X-Git-Url: https://git.josue.xyz/?a=blobdiff_plain;f=.config%2Fcoc%2Fextensions%2Fnode_modules%2Fcoc-prettier%2Fnode_modules%2Fprettier-eslint%2Fnode_modules%2Ftypescript%2Flib%2FtypingsInstaller.js;fp=.config%2Fcoc%2Fextensions%2Fnode_modules%2Fcoc-prettier%2Fnode_modules%2Fprettier-eslint%2Fnode_modules%2Ftypescript%2Flib%2FtypingsInstaller.js;h=a990920d8e94885d2727c1458936e8aee3555201;hb=3c06164f15bd10aed7d66b6314764a2961a14762;hp=0000000000000000000000000000000000000000;hpb=0e9c3ceb40901f4d44981c1376cb9e23a248e006;p=dotfiles%2F.git diff --git a/.config/coc/extensions/node_modules/coc-prettier/node_modules/prettier-eslint/node_modules/typescript/lib/typingsInstaller.js b/.config/coc/extensions/node_modules/coc-prettier/node_modules/prettier-eslint/node_modules/typescript/lib/typingsInstaller.js new file mode 100644 index 00000000..a990920d --- /dev/null +++ b/.config/coc/extensions/node_modules/coc-prettier/node_modules/prettier-eslint/node_modules/typescript/lib/typingsInstaller.js @@ -0,0 +1,108483 @@ +/*! ***************************************************************************** +Copyright (c) Microsoft Corporation. All rights reserved. +Licensed under the Apache License, Version 2.0 (the "License"); you may not use +this file except in compliance with the License. You may obtain a copy of the +License at http://www.apache.org/licenses/LICENSE-2.0 + +THIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED +WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE, +MERCHANTABLITY OR NON-INFRINGEMENT. + +See the Apache Version 2.0 License for specific language governing permissions +and limitations under the License. +***************************************************************************** */ + + +"use strict"; +var __spreadArrays = (this && this.__spreadArrays) || function () { + for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length; + for (var r = Array(s), k = 0, i = 0; i < il; i++) + for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++) + r[k] = a[j]; + return r; +}; +var __assign = (this && this.__assign) || function () { + __assign = Object.assign || function(t) { + for (var s, i = 1, n = arguments.length; i < n; i++) { + s = arguments[i]; + for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) + t[p] = s[p]; + } + return t; + }; + return __assign.apply(this, arguments); +}; +var __generator = (this && this.__generator) || function (thisArg, body) { + var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g; + return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g; + function verb(n) { return function (v) { return step([n, v]); }; } + function step(op) { + if (f) throw new TypeError("Generator is already executing."); + while (_) try { + if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t; + if (y = 0, t) op = [op[0] & 2, t.value]; + switch (op[0]) { + case 0: case 1: t = op; break; + case 4: _.label++; return { value: op[1], done: false }; + case 5: _.label++; y = op[1]; op = [0]; continue; + case 7: op = _.ops.pop(); _.trys.pop(); continue; + default: + if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; } + if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; } + if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; } + if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; } + if (t[2]) _.ops.pop(); + _.trys.pop(); continue; + } + op = body.call(thisArg, _); + } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; } + if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true }; + } +}; +var __makeTemplateObject = (this && this.__makeTemplateObject) || function (cooked, raw) { + if (Object.defineProperty) { Object.defineProperty(cooked, "raw", { value: raw }); } else { cooked.raw = raw; } + return cooked; +}; +var __extends = (this && this.__extends) || (function () { + var extendStatics = function (d, b) { + extendStatics = Object.setPrototypeOf || + ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) || + function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; }; + return extendStatics(d, b); + }; + return function (d, b) { + extendStatics(d, b); + function __() { this.constructor = d; } + d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __()); + }; +})(); +var ts; +(function (ts) { + // WARNING: The script `configurePrerelease.ts` uses a regexp to parse out these values. + // If changing the text in this section, be sure to test `configurePrerelease` too. + ts.versionMajorMinor = "3.9"; + /** The version of the TypeScript compiler release */ + ts.version = "3.9.9"; + /** + * Returns the native Map implementation if it is available and compatible (i.e. supports iteration). + */ + /* @internal */ + function tryGetNativeMap() { + // eslint-disable-next-line no-in-operator + return typeof Map !== "undefined" && "entries" in Map.prototype ? Map : undefined; + } + ts.tryGetNativeMap = tryGetNativeMap; + /* @internal */ + ts.Map = tryGetNativeMap() || (function () { + // NOTE: createMapShim will be defined for typescriptServices.js but not for tsc.js, so we must test for it. + if (typeof ts.createMapShim === "function") { + return ts.createMapShim(); + } + throw new Error("TypeScript requires an environment that provides a compatible native Map implementation."); + })(); + /* @internal */ + var Comparison; + (function (Comparison) { + Comparison[Comparison["LessThan"] = -1] = "LessThan"; + Comparison[Comparison["EqualTo"] = 0] = "EqualTo"; + Comparison[Comparison["GreaterThan"] = 1] = "GreaterThan"; + })(Comparison = ts.Comparison || (ts.Comparison = {})); +})(ts || (ts = {})); +/* @internal */ +var ts; +(function (ts) { + ts.emptyArray = []; + /** Create a new map. */ + function createMap() { + return new ts.Map(); + } + ts.createMap = createMap; + /** Create a new map from an array of entries. */ + function createMapFromEntries(entries) { + var map = createMap(); + for (var _i = 0, entries_1 = entries; _i < entries_1.length; _i++) { + var _a = entries_1[_i], key = _a[0], value = _a[1]; + map.set(key, value); + } + return map; + } + ts.createMapFromEntries = createMapFromEntries; + /** Create a new map from a template object is provided, the map will copy entries from it. */ + function createMapFromTemplate(template) { + var map = new ts.Map(); + // Copies keys/values from template. Note that for..in will not throw if + // template is undefined, and instead will just exit the loop. + for (var key in template) { + if (hasOwnProperty.call(template, key)) { + map.set(key, template[key]); + } + } + return map; + } + ts.createMapFromTemplate = createMapFromTemplate; + function length(array) { + return array ? array.length : 0; + } + ts.length = length; + /** + * Iterates through 'array' by index and performs the callback on each element of array until the callback + * returns a truthy value, then returns that value. + * If no such value is found, the callback is applied to each element of array and undefined is returned. + */ + function forEach(array, callback) { + if (array) { + for (var i = 0; i < array.length; i++) { + var result = callback(array[i], i); + if (result) { + return result; + } + } + } + return undefined; + } + ts.forEach = forEach; + /** + * Like `forEach`, but iterates in reverse order. + */ + function forEachRight(array, callback) { + if (array) { + for (var i = array.length - 1; i >= 0; i--) { + var result = callback(array[i], i); + if (result) { + return result; + } + } + } + return undefined; + } + ts.forEachRight = forEachRight; + /** Like `forEach`, but suitable for use with numbers and strings (which may be falsy). */ + function firstDefined(array, callback) { + if (array === undefined) { + return undefined; + } + for (var i = 0; i < array.length; i++) { + var result = callback(array[i], i); + if (result !== undefined) { + return result; + } + } + return undefined; + } + ts.firstDefined = firstDefined; + function firstDefinedIterator(iter, callback) { + while (true) { + var iterResult = iter.next(); + if (iterResult.done) { + return undefined; + } + var result = callback(iterResult.value); + if (result !== undefined) { + return result; + } + } + } + ts.firstDefinedIterator = firstDefinedIterator; + function zipWith(arrayA, arrayB, callback) { + var result = []; + ts.Debug.assertEqual(arrayA.length, arrayB.length); + for (var i = 0; i < arrayA.length; i++) { + result.push(callback(arrayA[i], arrayB[i], i)); + } + return result; + } + ts.zipWith = zipWith; + function zipToIterator(arrayA, arrayB) { + ts.Debug.assertEqual(arrayA.length, arrayB.length); + var i = 0; + return { + next: function () { + if (i === arrayA.length) { + return { value: undefined, done: true }; + } + i++; + return { value: [arrayA[i - 1], arrayB[i - 1]], done: false }; + } + }; + } + ts.zipToIterator = zipToIterator; + function zipToMap(keys, values) { + ts.Debug.assert(keys.length === values.length); + var map = createMap(); + for (var i = 0; i < keys.length; ++i) { + map.set(keys[i], values[i]); + } + return map; + } + ts.zipToMap = zipToMap; + /** + * Iterates through `array` by index and performs the callback on each element of array until the callback + * returns a falsey value, then returns false. + * If no such value is found, the callback is applied to each element of array and `true` is returned. + */ + function every(array, callback) { + if (array) { + for (var i = 0; i < array.length; i++) { + if (!callback(array[i], i)) { + return false; + } + } + } + return true; + } + ts.every = every; + function find(array, predicate) { + for (var i = 0; i < array.length; i++) { + var value = array[i]; + if (predicate(value, i)) { + return value; + } + } + return undefined; + } + ts.find = find; + function findLast(array, predicate) { + for (var i = array.length - 1; i >= 0; i--) { + var value = array[i]; + if (predicate(value, i)) { + return value; + } + } + return undefined; + } + ts.findLast = findLast; + /** Works like Array.prototype.findIndex, returning `-1` if no element satisfying the predicate is found. */ + function findIndex(array, predicate, startIndex) { + for (var i = startIndex || 0; i < array.length; i++) { + if (predicate(array[i], i)) { + return i; + } + } + return -1; + } + ts.findIndex = findIndex; + function findLastIndex(array, predicate, startIndex) { + for (var i = startIndex === undefined ? array.length - 1 : startIndex; i >= 0; i--) { + if (predicate(array[i], i)) { + return i; + } + } + return -1; + } + ts.findLastIndex = findLastIndex; + /** + * Returns the first truthy result of `callback`, or else fails. + * This is like `forEach`, but never returns undefined. + */ + function findMap(array, callback) { + for (var i = 0; i < array.length; i++) { + var result = callback(array[i], i); + if (result) { + return result; + } + } + return ts.Debug.fail(); + } + ts.findMap = findMap; + function contains(array, value, equalityComparer) { + if (equalityComparer === void 0) { equalityComparer = equateValues; } + if (array) { + for (var _i = 0, array_1 = array; _i < array_1.length; _i++) { + var v = array_1[_i]; + if (equalityComparer(v, value)) { + return true; + } + } + } + return false; + } + ts.contains = contains; + function arraysEqual(a, b, equalityComparer) { + if (equalityComparer === void 0) { equalityComparer = equateValues; } + return a.length === b.length && a.every(function (x, i) { return equalityComparer(x, b[i]); }); + } + ts.arraysEqual = arraysEqual; + function indexOfAnyCharCode(text, charCodes, start) { + for (var i = start || 0; i < text.length; i++) { + if (contains(charCodes, text.charCodeAt(i))) { + return i; + } + } + return -1; + } + ts.indexOfAnyCharCode = indexOfAnyCharCode; + function countWhere(array, predicate) { + var count = 0; + if (array) { + for (var i = 0; i < array.length; i++) { + var v = array[i]; + if (predicate(v, i)) { + count++; + } + } + } + return count; + } + ts.countWhere = countWhere; + function filter(array, f) { + if (array) { + var len = array.length; + var i = 0; + while (i < len && f(array[i])) + i++; + if (i < len) { + var result = array.slice(0, i); + i++; + while (i < len) { + var item = array[i]; + if (f(item)) { + result.push(item); + } + i++; + } + return result; + } + } + return array; + } + ts.filter = filter; + function filterMutate(array, f) { + var outIndex = 0; + for (var i = 0; i < array.length; i++) { + if (f(array[i], i, array)) { + array[outIndex] = array[i]; + outIndex++; + } + } + array.length = outIndex; + } + ts.filterMutate = filterMutate; + function clear(array) { + array.length = 0; + } + ts.clear = clear; + function map(array, f) { + var result; + if (array) { + result = []; + for (var i = 0; i < array.length; i++) { + result.push(f(array[i], i)); + } + } + return result; + } + ts.map = map; + function mapIterator(iter, mapFn) { + return { + next: function () { + var iterRes = iter.next(); + return iterRes.done ? iterRes : { value: mapFn(iterRes.value), done: false }; + } + }; + } + ts.mapIterator = mapIterator; + function sameMap(array, f) { + if (array) { + for (var i = 0; i < array.length; i++) { + var item = array[i]; + var mapped = f(item, i); + if (item !== mapped) { + var result = array.slice(0, i); + result.push(mapped); + for (i++; i < array.length; i++) { + result.push(f(array[i], i)); + } + return result; + } + } + } + return array; + } + ts.sameMap = sameMap; + /** + * Flattens an array containing a mix of array or non-array elements. + * + * @param array The array to flatten. + */ + function flatten(array) { + var result = []; + for (var _i = 0, array_2 = array; _i < array_2.length; _i++) { + var v = array_2[_i]; + if (v) { + if (isArray(v)) { + addRange(result, v); + } + else { + result.push(v); + } + } + } + return result; + } + ts.flatten = flatten; + /** + * Maps an array. If the mapped value is an array, it is spread into the result. + * + * @param array The array to map. + * @param mapfn The callback used to map the result into one or more values. + */ + function flatMap(array, mapfn) { + var result; + if (array) { + for (var i = 0; i < array.length; i++) { + var v = mapfn(array[i], i); + if (v) { + if (isArray(v)) { + result = addRange(result, v); + } + else { + result = append(result, v); + } + } + } + } + return result || ts.emptyArray; + } + ts.flatMap = flatMap; + function flatMapToMutable(array, mapfn) { + var result = []; + if (array) { + for (var i = 0; i < array.length; i++) { + var v = mapfn(array[i], i); + if (v) { + if (isArray(v)) { + addRange(result, v); + } + else { + result.push(v); + } + } + } + } + return result; + } + ts.flatMapToMutable = flatMapToMutable; + function flatMapIterator(iter, mapfn) { + var first = iter.next(); + if (first.done) { + return ts.emptyIterator; + } + var currentIter = getIterator(first.value); + return { + next: function () { + while (true) { + var currentRes = currentIter.next(); + if (!currentRes.done) { + return currentRes; + } + var iterRes = iter.next(); + if (iterRes.done) { + return iterRes; + } + currentIter = getIterator(iterRes.value); + } + }, + }; + function getIterator(x) { + var res = mapfn(x); + return res === undefined ? ts.emptyIterator : isArray(res) ? arrayIterator(res) : res; + } + } + ts.flatMapIterator = flatMapIterator; + function sameFlatMap(array, mapfn) { + var result; + if (array) { + for (var i = 0; i < array.length; i++) { + var item = array[i]; + var mapped = mapfn(item, i); + if (result || item !== mapped || isArray(mapped)) { + if (!result) { + result = array.slice(0, i); + } + if (isArray(mapped)) { + addRange(result, mapped); + } + else { + result.push(mapped); + } + } + } + } + return result || array; + } + ts.sameFlatMap = sameFlatMap; + function mapAllOrFail(array, mapFn) { + var result = []; + for (var i = 0; i < array.length; i++) { + var mapped = mapFn(array[i], i); + if (mapped === undefined) { + return undefined; + } + result.push(mapped); + } + return result; + } + ts.mapAllOrFail = mapAllOrFail; + function mapDefined(array, mapFn) { + var result = []; + if (array) { + for (var i = 0; i < array.length; i++) { + var mapped = mapFn(array[i], i); + if (mapped !== undefined) { + result.push(mapped); + } + } + } + return result; + } + ts.mapDefined = mapDefined; + function mapDefinedIterator(iter, mapFn) { + return { + next: function () { + while (true) { + var res = iter.next(); + if (res.done) { + return res; + } + var value = mapFn(res.value); + if (value !== undefined) { + return { value: value, done: false }; + } + } + } + }; + } + ts.mapDefinedIterator = mapDefinedIterator; + function mapDefinedMap(map, mapValue, mapKey) { + if (mapKey === void 0) { mapKey = identity; } + var result = createMap(); + map.forEach(function (value, key) { + var mapped = mapValue(value, key); + if (mapped !== undefined) { + result.set(mapKey(key), mapped); + } + }); + return result; + } + ts.mapDefinedMap = mapDefinedMap; + ts.emptyIterator = { next: function () { return ({ value: undefined, done: true }); } }; + function singleIterator(value) { + var done = false; + return { + next: function () { + var wasDone = done; + done = true; + return wasDone ? { value: undefined, done: true } : { value: value, done: false }; + } + }; + } + ts.singleIterator = singleIterator; + function spanMap(array, keyfn, mapfn) { + var result; + if (array) { + result = []; + var len = array.length; + var previousKey = void 0; + var key = void 0; + var start = 0; + var pos = 0; + while (start < len) { + while (pos < len) { + var value = array[pos]; + key = keyfn(value, pos); + if (pos === 0) { + previousKey = key; + } + else if (key !== previousKey) { + break; + } + pos++; + } + if (start < pos) { + var v = mapfn(array.slice(start, pos), previousKey, start, pos); + if (v) { + result.push(v); + } + start = pos; + } + previousKey = key; + pos++; + } + } + return result; + } + ts.spanMap = spanMap; + function mapEntries(map, f) { + if (!map) { + return undefined; + } + var result = createMap(); + map.forEach(function (value, key) { + var _a = f(key, value), newKey = _a[0], newValue = _a[1]; + result.set(newKey, newValue); + }); + return result; + } + ts.mapEntries = mapEntries; + function some(array, predicate) { + if (array) { + if (predicate) { + for (var _i = 0, array_3 = array; _i < array_3.length; _i++) { + var v = array_3[_i]; + if (predicate(v)) { + return true; + } + } + } + else { + return array.length > 0; + } + } + return false; + } + ts.some = some; + /** Calls the callback with (start, afterEnd) index pairs for each range where 'pred' is true. */ + function getRangesWhere(arr, pred, cb) { + var start; + for (var i = 0; i < arr.length; i++) { + if (pred(arr[i])) { + start = start === undefined ? i : start; + } + else { + if (start !== undefined) { + cb(start, i); + start = undefined; + } + } + } + if (start !== undefined) + cb(start, arr.length); + } + ts.getRangesWhere = getRangesWhere; + function concatenate(array1, array2) { + if (!some(array2)) + return array1; + if (!some(array1)) + return array2; + return __spreadArrays(array1, array2); + } + ts.concatenate = concatenate; + function selectIndex(_, i) { + return i; + } + function indicesOf(array) { + return array.map(selectIndex); + } + ts.indicesOf = indicesOf; + function deduplicateRelational(array, equalityComparer, comparer) { + // Perform a stable sort of the array. This ensures the first entry in a list of + // duplicates remains the first entry in the result. + var indices = indicesOf(array); + stableSortIndices(array, indices, comparer); + var last = array[indices[0]]; + var deduplicated = [indices[0]]; + for (var i = 1; i < indices.length; i++) { + var index = indices[i]; + var item = array[index]; + if (!equalityComparer(last, item)) { + deduplicated.push(index); + last = item; + } + } + // restore original order + deduplicated.sort(); + return deduplicated.map(function (i) { return array[i]; }); + } + function deduplicateEquality(array, equalityComparer) { + var result = []; + for (var _i = 0, array_4 = array; _i < array_4.length; _i++) { + var item = array_4[_i]; + pushIfUnique(result, item, equalityComparer); + } + return result; + } + /** + * Deduplicates an unsorted array. + * @param equalityComparer An `EqualityComparer` used to determine if two values are duplicates. + * @param comparer An optional `Comparer` used to sort entries before comparison, though the + * result will remain in the original order in `array`. + */ + function deduplicate(array, equalityComparer, comparer) { + return array.length === 0 ? [] : + array.length === 1 ? array.slice() : + comparer ? deduplicateRelational(array, equalityComparer, comparer) : + deduplicateEquality(array, equalityComparer); + } + ts.deduplicate = deduplicate; + /** + * Deduplicates an array that has already been sorted. + */ + function deduplicateSorted(array, comparer) { + if (array.length === 0) + return ts.emptyArray; + var last = array[0]; + var deduplicated = [last]; + for (var i = 1; i < array.length; i++) { + var next = array[i]; + switch (comparer(next, last)) { + // equality comparison + case true: + // relational comparison + // falls through + case 0 /* EqualTo */: + continue; + case -1 /* LessThan */: + // If `array` is sorted, `next` should **never** be less than `last`. + return ts.Debug.fail("Array is unsorted."); + } + deduplicated.push(last = next); + } + return deduplicated; + } + function insertSorted(array, insert, compare) { + if (array.length === 0) { + array.push(insert); + return; + } + var insertIndex = binarySearch(array, insert, identity, compare); + if (insertIndex < 0) { + array.splice(~insertIndex, 0, insert); + } + } + ts.insertSorted = insertSorted; + function sortAndDeduplicate(array, comparer, equalityComparer) { + return deduplicateSorted(sort(array, comparer), equalityComparer || comparer || compareStringsCaseSensitive); + } + ts.sortAndDeduplicate = sortAndDeduplicate; + function arrayIsEqualTo(array1, array2, equalityComparer) { + if (equalityComparer === void 0) { equalityComparer = equateValues; } + if (!array1 || !array2) { + return array1 === array2; + } + if (array1.length !== array2.length) { + return false; + } + for (var i = 0; i < array1.length; i++) { + if (!equalityComparer(array1[i], array2[i], i)) { + return false; + } + } + return true; + } + ts.arrayIsEqualTo = arrayIsEqualTo; + function compact(array) { + var result; + if (array) { + for (var i = 0; i < array.length; i++) { + var v = array[i]; + if (result || !v) { + if (!result) { + result = array.slice(0, i); + } + if (v) { + result.push(v); + } + } + } + } + return result || array; + } + ts.compact = compact; + /** + * Gets the relative complement of `arrayA` with respect to `arrayB`, returning the elements that + * are not present in `arrayA` but are present in `arrayB`. Assumes both arrays are sorted + * based on the provided comparer. + */ + function relativeComplement(arrayA, arrayB, comparer) { + if (!arrayB || !arrayA || arrayB.length === 0 || arrayA.length === 0) + return arrayB; + var result = []; + loopB: for (var offsetA = 0, offsetB = 0; offsetB < arrayB.length; offsetB++) { + if (offsetB > 0) { + // Ensure `arrayB` is properly sorted. + ts.Debug.assertGreaterThanOrEqual(comparer(arrayB[offsetB], arrayB[offsetB - 1]), 0 /* EqualTo */); + } + loopA: for (var startA = offsetA; offsetA < arrayA.length; offsetA++) { + if (offsetA > startA) { + // Ensure `arrayA` is properly sorted. We only need to perform this check if + // `offsetA` has changed since we entered the loop. + ts.Debug.assertGreaterThanOrEqual(comparer(arrayA[offsetA], arrayA[offsetA - 1]), 0 /* EqualTo */); + } + switch (comparer(arrayB[offsetB], arrayA[offsetA])) { + case -1 /* LessThan */: + // If B is less than A, B does not exist in arrayA. Add B to the result and + // move to the next element in arrayB without changing the current position + // in arrayA. + result.push(arrayB[offsetB]); + continue loopB; + case 0 /* EqualTo */: + // If B is equal to A, B exists in arrayA. Move to the next element in + // arrayB without adding B to the result or changing the current position + // in arrayA. + continue loopB; + case 1 /* GreaterThan */: + // If B is greater than A, we need to keep looking for B in arrayA. Move to + // the next element in arrayA and recheck. + continue loopA; + } + } + } + return result; + } + ts.relativeComplement = relativeComplement; + function sum(array, prop) { + var result = 0; + for (var _i = 0, array_5 = array; _i < array_5.length; _i++) { + var v = array_5[_i]; + result += v[prop]; + } + return result; + } + ts.sum = sum; + function append(to, value) { + if (value === undefined) + return to; + if (to === undefined) + return [value]; + to.push(value); + return to; + } + ts.append = append; + function combine(xs, ys) { + if (xs === undefined) + return ys; + if (ys === undefined) + return xs; + if (isArray(xs)) + return isArray(ys) ? concatenate(xs, ys) : append(xs, ys); + if (isArray(ys)) + return append(ys, xs); + return [xs, ys]; + } + ts.combine = combine; + /** + * Gets the actual offset into an array for a relative offset. Negative offsets indicate a + * position offset from the end of the array. + */ + function toOffset(array, offset) { + return offset < 0 ? array.length + offset : offset; + } + function addRange(to, from, start, end) { + if (from === undefined || from.length === 0) + return to; + if (to === undefined) + return from.slice(start, end); + start = start === undefined ? 0 : toOffset(from, start); + end = end === undefined ? from.length : toOffset(from, end); + for (var i = start; i < end && i < from.length; i++) { + if (from[i] !== undefined) { + to.push(from[i]); + } + } + return to; + } + ts.addRange = addRange; + /** + * @return Whether the value was added. + */ + function pushIfUnique(array, toAdd, equalityComparer) { + if (contains(array, toAdd, equalityComparer)) { + return false; + } + else { + array.push(toAdd); + return true; + } + } + ts.pushIfUnique = pushIfUnique; + /** + * Unlike `pushIfUnique`, this can take `undefined` as an input, and returns a new array. + */ + function appendIfUnique(array, toAdd, equalityComparer) { + if (array) { + pushIfUnique(array, toAdd, equalityComparer); + return array; + } + else { + return [toAdd]; + } + } + ts.appendIfUnique = appendIfUnique; + function stableSortIndices(array, indices, comparer) { + // sort indices by value then position + indices.sort(function (x, y) { return comparer(array[x], array[y]) || compareValues(x, y); }); + } + /** + * Returns a new sorted array. + */ + function sort(array, comparer) { + return (array.length === 0 ? array : array.slice().sort(comparer)); + } + ts.sort = sort; + function arrayIterator(array) { + var i = 0; + return { next: function () { + if (i === array.length) { + return { value: undefined, done: true }; + } + else { + i++; + return { value: array[i - 1], done: false }; + } + } }; + } + ts.arrayIterator = arrayIterator; + function arrayReverseIterator(array) { + var i = array.length; + return { + next: function () { + if (i === 0) { + return { value: undefined, done: true }; + } + else { + i--; + return { value: array[i], done: false }; + } + } + }; + } + ts.arrayReverseIterator = arrayReverseIterator; + /** + * Stable sort of an array. Elements equal to each other maintain their relative position in the array. + */ + function stableSort(array, comparer) { + var indices = indicesOf(array); + stableSortIndices(array, indices, comparer); + return indices.map(function (i) { return array[i]; }); + } + ts.stableSort = stableSort; + function rangeEquals(array1, array2, pos, end) { + while (pos < end) { + if (array1[pos] !== array2[pos]) { + return false; + } + pos++; + } + return true; + } + ts.rangeEquals = rangeEquals; + /** + * Returns the element at a specific offset in an array if non-empty, `undefined` otherwise. + * A negative offset indicates the element should be retrieved from the end of the array. + */ + function elementAt(array, offset) { + if (array) { + offset = toOffset(array, offset); + if (offset < array.length) { + return array[offset]; + } + } + return undefined; + } + ts.elementAt = elementAt; + /** + * Returns the first element of an array if non-empty, `undefined` otherwise. + */ + function firstOrUndefined(array) { + return array.length === 0 ? undefined : array[0]; + } + ts.firstOrUndefined = firstOrUndefined; + function first(array) { + ts.Debug.assert(array.length !== 0); + return array[0]; + } + ts.first = first; + /** + * Returns the last element of an array if non-empty, `undefined` otherwise. + */ + function lastOrUndefined(array) { + return array.length === 0 ? undefined : array[array.length - 1]; + } + ts.lastOrUndefined = lastOrUndefined; + function last(array) { + ts.Debug.assert(array.length !== 0); + return array[array.length - 1]; + } + ts.last = last; + /** + * Returns the only element of an array if it contains only one element, `undefined` otherwise. + */ + function singleOrUndefined(array) { + return array && array.length === 1 + ? array[0] + : undefined; + } + ts.singleOrUndefined = singleOrUndefined; + function singleOrMany(array) { + return array && array.length === 1 + ? array[0] + : array; + } + ts.singleOrMany = singleOrMany; + function replaceElement(array, index, value) { + var result = array.slice(0); + result[index] = value; + return result; + } + ts.replaceElement = replaceElement; + /** + * Performs a binary search, finding the index at which `value` occurs in `array`. + * If no such index is found, returns the 2's-complement of first index at which + * `array[index]` exceeds `value`. + * @param array A sorted array whose first element must be no larger than number + * @param value The value to be searched for in the array. + * @param keySelector A callback used to select the search key from `value` and each element of + * `array`. + * @param keyComparer A callback used to compare two keys in a sorted array. + * @param offset An offset into `array` at which to start the search. + */ + function binarySearch(array, value, keySelector, keyComparer, offset) { + return binarySearchKey(array, keySelector(value), keySelector, keyComparer, offset); + } + ts.binarySearch = binarySearch; + /** + * Performs a binary search, finding the index at which an object with `key` occurs in `array`. + * If no such index is found, returns the 2's-complement of first index at which + * `array[index]` exceeds `key`. + * @param array A sorted array whose first element must be no larger than number + * @param key The key to be searched for in the array. + * @param keySelector A callback used to select the search key from each element of `array`. + * @param keyComparer A callback used to compare two keys in a sorted array. + * @param offset An offset into `array` at which to start the search. + */ + function binarySearchKey(array, key, keySelector, keyComparer, offset) { + if (!some(array)) { + return -1; + } + var low = offset || 0; + var high = array.length - 1; + while (low <= high) { + var middle = low + ((high - low) >> 1); + var midKey = keySelector(array[middle]); + switch (keyComparer(midKey, key)) { + case -1 /* LessThan */: + low = middle + 1; + break; + case 0 /* EqualTo */: + return middle; + case 1 /* GreaterThan */: + high = middle - 1; + break; + } + } + return ~low; + } + ts.binarySearchKey = binarySearchKey; + function reduceLeft(array, f, initial, start, count) { + if (array && array.length > 0) { + var size = array.length; + if (size > 0) { + var pos = start === undefined || start < 0 ? 0 : start; + var end = count === undefined || pos + count > size - 1 ? size - 1 : pos + count; + var result = void 0; + if (arguments.length <= 2) { + result = array[pos]; + pos++; + } + else { + result = initial; + } + while (pos <= end) { + result = f(result, array[pos], pos); + pos++; + } + return result; + } + } + return initial; + } + ts.reduceLeft = reduceLeft; + var hasOwnProperty = Object.prototype.hasOwnProperty; + /** + * Indicates whether a map-like contains an own property with the specified key. + * + * @param map A map-like. + * @param key A property key. + */ + function hasProperty(map, key) { + return hasOwnProperty.call(map, key); + } + ts.hasProperty = hasProperty; + /** + * Gets the value of an owned property in a map-like. + * + * @param map A map-like. + * @param key A property key. + */ + function getProperty(map, key) { + return hasOwnProperty.call(map, key) ? map[key] : undefined; + } + ts.getProperty = getProperty; + /** + * Gets the owned, enumerable property keys of a map-like. + */ + function getOwnKeys(map) { + var keys = []; + for (var key in map) { + if (hasOwnProperty.call(map, key)) { + keys.push(key); + } + } + return keys; + } + ts.getOwnKeys = getOwnKeys; + function getAllKeys(obj) { + var result = []; + do { + var names = Object.getOwnPropertyNames(obj); + for (var _i = 0, names_1 = names; _i < names_1.length; _i++) { + var name = names_1[_i]; + pushIfUnique(result, name); + } + } while (obj = Object.getPrototypeOf(obj)); + return result; + } + ts.getAllKeys = getAllKeys; + function getOwnValues(sparseArray) { + var values = []; + for (var key in sparseArray) { + if (hasOwnProperty.call(sparseArray, key)) { + values.push(sparseArray[key]); + } + } + return values; + } + ts.getOwnValues = getOwnValues; + function arrayFrom(iterator, map) { + var result = []; + for (var iterResult = iterator.next(); !iterResult.done; iterResult = iterator.next()) { + result.push(map ? map(iterResult.value) : iterResult.value); + } + return result; + } + ts.arrayFrom = arrayFrom; + function assign(t) { + var args = []; + for (var _i = 1; _i < arguments.length; _i++) { + args[_i - 1] = arguments[_i]; + } + for (var _a = 0, args_1 = args; _a < args_1.length; _a++) { + var arg = args_1[_a]; + if (arg === undefined) + continue; + for (var p in arg) { + if (hasProperty(arg, p)) { + t[p] = arg[p]; + } + } + } + return t; + } + ts.assign = assign; + /** + * Performs a shallow equality comparison of the contents of two map-likes. + * + * @param left A map-like whose properties should be compared. + * @param right A map-like whose properties should be compared. + */ + function equalOwnProperties(left, right, equalityComparer) { + if (equalityComparer === void 0) { equalityComparer = equateValues; } + if (left === right) + return true; + if (!left || !right) + return false; + for (var key in left) { + if (hasOwnProperty.call(left, key)) { + if (!hasOwnProperty.call(right, key)) + return false; + if (!equalityComparer(left[key], right[key])) + return false; + } + } + for (var key in right) { + if (hasOwnProperty.call(right, key)) { + if (!hasOwnProperty.call(left, key)) + return false; + } + } + return true; + } + ts.equalOwnProperties = equalOwnProperties; + function arrayToMap(array, makeKey, makeValue) { + if (makeValue === void 0) { makeValue = identity; } + var result = createMap(); + for (var _i = 0, array_6 = array; _i < array_6.length; _i++) { + var value = array_6[_i]; + var key = makeKey(value); + if (key !== undefined) + result.set(key, makeValue(value)); + } + return result; + } + ts.arrayToMap = arrayToMap; + function arrayToNumericMap(array, makeKey, makeValue) { + if (makeValue === void 0) { makeValue = identity; } + var result = []; + for (var _i = 0, array_7 = array; _i < array_7.length; _i++) { + var value = array_7[_i]; + result[makeKey(value)] = makeValue(value); + } + return result; + } + ts.arrayToNumericMap = arrayToNumericMap; + function arrayToMultiMap(values, makeKey, makeValue) { + if (makeValue === void 0) { makeValue = identity; } + var result = createMultiMap(); + for (var _i = 0, values_1 = values; _i < values_1.length; _i++) { + var value = values_1[_i]; + result.add(makeKey(value), makeValue(value)); + } + return result; + } + ts.arrayToMultiMap = arrayToMultiMap; + function group(values, getGroupId, resultSelector) { + if (resultSelector === void 0) { resultSelector = identity; } + return arrayFrom(arrayToMultiMap(values, getGroupId).values(), resultSelector); + } + ts.group = group; + function clone(object) { + var result = {}; + for (var id in object) { + if (hasOwnProperty.call(object, id)) { + result[id] = object[id]; + } + } + return result; + } + ts.clone = clone; + /** + * Creates a new object by adding the own properties of `second`, then the own properties of `first`. + * + * NOTE: This means that if a property exists in both `first` and `second`, the property in `first` will be chosen. + */ + function extend(first, second) { + var result = {}; + for (var id in second) { + if (hasOwnProperty.call(second, id)) { + result[id] = second[id]; + } + } + for (var id in first) { + if (hasOwnProperty.call(first, id)) { + result[id] = first[id]; + } + } + return result; + } + ts.extend = extend; + function copyProperties(first, second) { + for (var id in second) { + if (hasOwnProperty.call(second, id)) { + first[id] = second[id]; + } + } + } + ts.copyProperties = copyProperties; + function maybeBind(obj, fn) { + return fn ? fn.bind(obj) : undefined; + } + ts.maybeBind = maybeBind; + function mapMap(map, f) { + var result = createMap(); + map.forEach(function (t, key) { return result.set.apply(result, (f(t, key))); }); + return result; + } + ts.mapMap = mapMap; + function createMultiMap() { + var map = createMap(); + map.add = multiMapAdd; + map.remove = multiMapRemove; + return map; + } + ts.createMultiMap = createMultiMap; + function multiMapAdd(key, value) { + var values = this.get(key); + if (values) { + values.push(value); + } + else { + this.set(key, values = [value]); + } + return values; + } + function multiMapRemove(key, value) { + var values = this.get(key); + if (values) { + unorderedRemoveItem(values, value); + if (!values.length) { + this.delete(key); + } + } + } + function createUnderscoreEscapedMultiMap() { + return createMultiMap(); + } + ts.createUnderscoreEscapedMultiMap = createUnderscoreEscapedMultiMap; + /** + * Tests whether a value is an array. + */ + function isArray(value) { + return Array.isArray ? Array.isArray(value) : value instanceof Array; + } + ts.isArray = isArray; + function toArray(value) { + return isArray(value) ? value : [value]; + } + ts.toArray = toArray; + /** + * Tests whether a value is string + */ + function isString(text) { + return typeof text === "string"; + } + ts.isString = isString; + function isNumber(x) { + return typeof x === "number"; + } + ts.isNumber = isNumber; + function tryCast(value, test) { + return value !== undefined && test(value) ? value : undefined; + } + ts.tryCast = tryCast; + function cast(value, test) { + if (value !== undefined && test(value)) + return value; + return ts.Debug.fail("Invalid cast. The supplied value " + value + " did not pass the test '" + ts.Debug.getFunctionName(test) + "'."); + } + ts.cast = cast; + /** Does nothing. */ + function noop(_) { } + ts.noop = noop; + /** Do nothing and return false */ + function returnFalse() { return false; } + ts.returnFalse = returnFalse; + /** Do nothing and return true */ + function returnTrue() { return true; } + ts.returnTrue = returnTrue; + /** Do nothing and return undefined */ + function returnUndefined() { return undefined; } + ts.returnUndefined = returnUndefined; + /** Returns its argument. */ + function identity(x) { return x; } + ts.identity = identity; + /** Returns lower case string */ + function toLowerCase(x) { return x.toLowerCase(); } + ts.toLowerCase = toLowerCase; + // We convert the file names to lower case as key for file name on case insensitive file system + // While doing so we need to handle special characters (eg \u0130) to ensure that we dont convert + // it to lower case, fileName with its lowercase form can exist along side it. + // Handle special characters and make those case sensitive instead + // + // |-#--|-Unicode--|-Char code-|-Desc-------------------------------------------------------------------| + // | 1. | i | 105 | Ascii i | + // | 2. | I | 73 | Ascii I | + // |-------- Special characters ------------------------------------------------------------------------| + // | 3. | \u0130 | 304 | Uppper case I with dot above | + // | 4. | i,\u0307 | 105,775 | i, followed by 775: Lower case of (3rd item) | + // | 5. | I,\u0307 | 73,775 | I, followed by 775: Upper case of (4th item), lower case is (4th item) | + // | 6. | \u0131 | 305 | Lower case i without dot, upper case is I (2nd item) | + // | 7. | \u00DF | 223 | Lower case sharp s | + // + // Because item 3 is special where in its lowercase character has its own + // upper case form we cant convert its case. + // Rest special characters are either already in lower case format or + // they have corresponding upper case character so they dont need special handling + // + // But to avoid having to do string building for most common cases, also ignore + // a-z, 0-9, \u0131, \u00DF, \, /, ., : and space + var fileNameLowerCaseRegExp = /[^\u0130\u0131\u00DFa-z0-9\\/:\-_\. ]+/g; + /** + * Case insensitive file systems have descripencies in how they handle some characters (eg. turkish Upper case I with dot on top - \u0130) + * This function is used in places where we want to make file name as a key on these systems + * It is possible on mac to be able to refer to file name with I with dot on top as a fileName with its lower case form + * But on windows we cannot. Windows can have fileName with I with dot on top next to its lower case and they can not each be referred with the lowercase forms + * Technically we would want this function to be platform sepcific as well but + * our api has till now only taken caseSensitive as the only input and just for some characters we dont want to update API and ensure all customers use those api + * We could use upper case and we would still need to deal with the descripencies but + * we want to continue using lower case since in most cases filenames are lowercasewe and wont need any case changes and avoid having to store another string for the key + * So for this function purpose, we go ahead and assume character I with dot on top it as case sensitive since its very unlikely to use lower case form of that special character + */ + function toFileNameLowerCase(x) { + return fileNameLowerCaseRegExp.test(x) ? + x.replace(fileNameLowerCaseRegExp, toLowerCase) : + x; + } + ts.toFileNameLowerCase = toFileNameLowerCase; + /** Throws an error because a function is not implemented. */ + function notImplemented() { + throw new Error("Not implemented"); + } + ts.notImplemented = notImplemented; + function memoize(callback) { + var value; + return function () { + if (callback) { + value = callback(); + callback = undefined; + } + return value; + }; + } + ts.memoize = memoize; + function compose(a, b, c, d, e) { + if (!!e) { + var args_2 = []; + for (var i = 0; i < arguments.length; i++) { + args_2[i] = arguments[i]; + } + return function (t) { return reduceLeft(args_2, function (u, f) { return f(u); }, t); }; + } + else if (d) { + return function (t) { return d(c(b(a(t)))); }; + } + else if (c) { + return function (t) { return c(b(a(t))); }; + } + else if (b) { + return function (t) { return b(a(t)); }; + } + else if (a) { + return function (t) { return a(t); }; + } + else { + return function (t) { return t; }; + } + } + ts.compose = compose; + var AssertionLevel; + (function (AssertionLevel) { + AssertionLevel[AssertionLevel["None"] = 0] = "None"; + AssertionLevel[AssertionLevel["Normal"] = 1] = "Normal"; + AssertionLevel[AssertionLevel["Aggressive"] = 2] = "Aggressive"; + AssertionLevel[AssertionLevel["VeryAggressive"] = 3] = "VeryAggressive"; + })(AssertionLevel = ts.AssertionLevel || (ts.AssertionLevel = {})); + function equateValues(a, b) { + return a === b; + } + ts.equateValues = equateValues; + /** + * Compare the equality of two strings using a case-sensitive ordinal comparison. + * + * Case-sensitive comparisons compare both strings one code-point at a time using the integer + * value of each code-point after applying `toUpperCase` to each string. We always map both + * strings to their upper-case form as some unicode characters do not properly round-trip to + * lowercase (such as `ẞ` (German sharp capital s)). + */ + function equateStringsCaseInsensitive(a, b) { + return a === b + || a !== undefined + && b !== undefined + && a.toUpperCase() === b.toUpperCase(); + } + ts.equateStringsCaseInsensitive = equateStringsCaseInsensitive; + /** + * Compare the equality of two strings using a case-sensitive ordinal comparison. + * + * Case-sensitive comparisons compare both strings one code-point at a time using the + * integer value of each code-point. + */ + function equateStringsCaseSensitive(a, b) { + return equateValues(a, b); + } + ts.equateStringsCaseSensitive = equateStringsCaseSensitive; + function compareComparableValues(a, b) { + return a === b ? 0 /* EqualTo */ : + a === undefined ? -1 /* LessThan */ : + b === undefined ? 1 /* GreaterThan */ : + a < b ? -1 /* LessThan */ : + 1 /* GreaterThan */; + } + /** + * Compare two numeric values for their order relative to each other. + * To compare strings, use any of the `compareStrings` functions. + */ + function compareValues(a, b) { + return compareComparableValues(a, b); + } + ts.compareValues = compareValues; + /** + * Compare two TextSpans, first by `start`, then by `length`. + */ + function compareTextSpans(a, b) { + return compareValues(a === null || a === void 0 ? void 0 : a.start, b === null || b === void 0 ? void 0 : b.start) || compareValues(a === null || a === void 0 ? void 0 : a.length, b === null || b === void 0 ? void 0 : b.length); + } + ts.compareTextSpans = compareTextSpans; + function min(a, b, compare) { + return compare(a, b) === -1 /* LessThan */ ? a : b; + } + ts.min = min; + /** + * Compare two strings using a case-insensitive ordinal comparison. + * + * Ordinal comparisons are based on the difference between the unicode code points of both + * strings. Characters with multiple unicode representations are considered unequal. Ordinal + * comparisons provide predictable ordering, but place "a" after "B". + * + * Case-insensitive comparisons compare both strings one code-point at a time using the integer + * value of each code-point after applying `toUpperCase` to each string. We always map both + * strings to their upper-case form as some unicode characters do not properly round-trip to + * lowercase (such as `ẞ` (German sharp capital s)). + */ + function compareStringsCaseInsensitive(a, b) { + if (a === b) + return 0 /* EqualTo */; + if (a === undefined) + return -1 /* LessThan */; + if (b === undefined) + return 1 /* GreaterThan */; + a = a.toUpperCase(); + b = b.toUpperCase(); + return a < b ? -1 /* LessThan */ : a > b ? 1 /* GreaterThan */ : 0 /* EqualTo */; + } + ts.compareStringsCaseInsensitive = compareStringsCaseInsensitive; + /** + * Compare two strings using a case-sensitive ordinal comparison. + * + * Ordinal comparisons are based on the difference between the unicode code points of both + * strings. Characters with multiple unicode representations are considered unequal. Ordinal + * comparisons provide predictable ordering, but place "a" after "B". + * + * Case-sensitive comparisons compare both strings one code-point at a time using the integer + * value of each code-point. + */ + function compareStringsCaseSensitive(a, b) { + return compareComparableValues(a, b); + } + ts.compareStringsCaseSensitive = compareStringsCaseSensitive; + function getStringComparer(ignoreCase) { + return ignoreCase ? compareStringsCaseInsensitive : compareStringsCaseSensitive; + } + ts.getStringComparer = getStringComparer; + /** + * Creates a string comparer for use with string collation in the UI. + */ + var createUIStringComparer = (function () { + var defaultComparer; + var enUSComparer; + var stringComparerFactory = getStringComparerFactory(); + return createStringComparer; + function compareWithCallback(a, b, comparer) { + if (a === b) + return 0 /* EqualTo */; + if (a === undefined) + return -1 /* LessThan */; + if (b === undefined) + return 1 /* GreaterThan */; + var value = comparer(a, b); + return value < 0 ? -1 /* LessThan */ : value > 0 ? 1 /* GreaterThan */ : 0 /* EqualTo */; + } + function createIntlCollatorStringComparer(locale) { + // Intl.Collator.prototype.compare is bound to the collator. See NOTE in + // http://www.ecma-international.org/ecma-402/2.0/#sec-Intl.Collator.prototype.compare + var comparer = new Intl.Collator(locale, { usage: "sort", sensitivity: "variant" }).compare; + return function (a, b) { return compareWithCallback(a, b, comparer); }; + } + function createLocaleCompareStringComparer(locale) { + // if the locale is not the default locale (`undefined`), use the fallback comparer. + if (locale !== undefined) + return createFallbackStringComparer(); + return function (a, b) { return compareWithCallback(a, b, compareStrings); }; + function compareStrings(a, b) { + return a.localeCompare(b); + } + } + function createFallbackStringComparer() { + // An ordinal comparison puts "A" after "b", but for the UI we want "A" before "b". + // We first sort case insensitively. So "Aaa" will come before "baa". + // Then we sort case sensitively, so "aaa" will come before "Aaa". + // + // For case insensitive comparisons we always map both strings to their + // upper-case form as some unicode characters do not properly round-trip to + // lowercase (such as `ẞ` (German sharp capital s)). + return function (a, b) { return compareWithCallback(a, b, compareDictionaryOrder); }; + function compareDictionaryOrder(a, b) { + return compareStrings(a.toUpperCase(), b.toUpperCase()) || compareStrings(a, b); + } + function compareStrings(a, b) { + return a < b ? -1 /* LessThan */ : a > b ? 1 /* GreaterThan */ : 0 /* EqualTo */; + } + } + function getStringComparerFactory() { + // If the host supports Intl, we use it for comparisons using the default locale. + if (typeof Intl === "object" && typeof Intl.Collator === "function") { + return createIntlCollatorStringComparer; + } + // If the host does not support Intl, we fall back to localeCompare. + // localeCompare in Node v0.10 is just an ordinal comparison, so don't use it. + if (typeof String.prototype.localeCompare === "function" && + typeof String.prototype.toLocaleUpperCase === "function" && + "a".localeCompare("B") < 0) { + return createLocaleCompareStringComparer; + } + // Otherwise, fall back to ordinal comparison: + return createFallbackStringComparer; + } + function createStringComparer(locale) { + // Hold onto common string comparers. This avoids constantly reallocating comparers during + // tests. + if (locale === undefined) { + return defaultComparer || (defaultComparer = stringComparerFactory(locale)); + } + else if (locale === "en-US") { + return enUSComparer || (enUSComparer = stringComparerFactory(locale)); + } + else { + return stringComparerFactory(locale); + } + } + })(); + var uiComparerCaseSensitive; + var uiLocale; + function getUILocale() { + return uiLocale; + } + ts.getUILocale = getUILocale; + function setUILocale(value) { + if (uiLocale !== value) { + uiLocale = value; + uiComparerCaseSensitive = undefined; + } + } + ts.setUILocale = setUILocale; + /** + * Compare two strings in a using the case-sensitive sort behavior of the UI locale. + * + * Ordering is not predictable between different host locales, but is best for displaying + * ordered data for UI presentation. Characters with multiple unicode representations may + * be considered equal. + * + * Case-sensitive comparisons compare strings that differ in base characters, or + * accents/diacritic marks, or case as unequal. + */ + function compareStringsCaseSensitiveUI(a, b) { + var comparer = uiComparerCaseSensitive || (uiComparerCaseSensitive = createUIStringComparer(uiLocale)); + return comparer(a, b); + } + ts.compareStringsCaseSensitiveUI = compareStringsCaseSensitiveUI; + function compareProperties(a, b, key, comparer) { + return a === b ? 0 /* EqualTo */ : + a === undefined ? -1 /* LessThan */ : + b === undefined ? 1 /* GreaterThan */ : + comparer(a[key], b[key]); + } + ts.compareProperties = compareProperties; + /** True is greater than false. */ + function compareBooleans(a, b) { + return compareValues(a ? 1 : 0, b ? 1 : 0); + } + ts.compareBooleans = compareBooleans; + /** + * Given a name and a list of names that are *not* equal to the name, return a spelling suggestion if there is one that is close enough. + * Names less than length 3 only check for case-insensitive equality, not Levenshtein distance. + * + * If there is a candidate that's the same except for case, return that. + * If there is a candidate that's within one edit of the name, return that. + * Otherwise, return the candidate with the smallest Levenshtein distance, + * except for candidates: + * * With no name + * * Whose length differs from the target name by more than 0.34 of the length of the name. + * * Whose levenshtein distance is more than 0.4 of the length of the name + * (0.4 allows 1 substitution/transposition for every 5 characters, + * and 1 insertion/deletion at 3 characters) + */ + function getSpellingSuggestion(name, candidates, getName) { + var maximumLengthDifference = Math.min(2, Math.floor(name.length * 0.34)); + var bestDistance = Math.floor(name.length * 0.4) + 1; // If the best result isn't better than this, don't bother. + var bestCandidate; + var justCheckExactMatches = false; + var nameLowerCase = name.toLowerCase(); + for (var _i = 0, candidates_1 = candidates; _i < candidates_1.length; _i++) { + var candidate = candidates_1[_i]; + var candidateName = getName(candidate); + if (candidateName !== undefined && Math.abs(candidateName.length - nameLowerCase.length) <= maximumLengthDifference) { + var candidateNameLowerCase = candidateName.toLowerCase(); + if (candidateNameLowerCase === nameLowerCase) { + if (candidateName === name) { + continue; + } + return candidate; + } + if (justCheckExactMatches) { + continue; + } + if (candidateName.length < 3) { + // Don't bother, user would have noticed a 2-character name having an extra character + continue; + } + // Only care about a result better than the best so far. + var distance = levenshteinWithMax(nameLowerCase, candidateNameLowerCase, bestDistance - 1); + if (distance === undefined) { + continue; + } + if (distance < 3) { + justCheckExactMatches = true; + bestCandidate = candidate; + } + else { + ts.Debug.assert(distance < bestDistance); // Else `levenshteinWithMax` should return undefined + bestDistance = distance; + bestCandidate = candidate; + } + } + } + return bestCandidate; + } + ts.getSpellingSuggestion = getSpellingSuggestion; + function levenshteinWithMax(s1, s2, max) { + var previous = new Array(s2.length + 1); + var current = new Array(s2.length + 1); + /** Represents any value > max. We don't care about the particular value. */ + var big = max + 1; + for (var i = 0; i <= s2.length; i++) { + previous[i] = i; + } + for (var i = 1; i <= s1.length; i++) { + var c1 = s1.charCodeAt(i - 1); + var minJ = i > max ? i - max : 1; + var maxJ = s2.length > max + i ? max + i : s2.length; + current[0] = i; + /** Smallest value of the matrix in the ith column. */ + var colMin = i; + for (var j = 1; j < minJ; j++) { + current[j] = big; + } + for (var j = minJ; j <= maxJ; j++) { + var dist = c1 === s2.charCodeAt(j - 1) + ? previous[j - 1] + : Math.min(/*delete*/ previous[j] + 1, /*insert*/ current[j - 1] + 1, /*substitute*/ previous[j - 1] + 2); + current[j] = dist; + colMin = Math.min(colMin, dist); + } + for (var j = maxJ + 1; j <= s2.length; j++) { + current[j] = big; + } + if (colMin > max) { + // Give up -- everything in this column is > max and it can't get better in future columns. + return undefined; + } + var temp = previous; + previous = current; + current = temp; + } + var res = previous[s2.length]; + return res > max ? undefined : res; + } + function endsWith(str, suffix) { + var expectedPos = str.length - suffix.length; + return expectedPos >= 0 && str.indexOf(suffix, expectedPos) === expectedPos; + } + ts.endsWith = endsWith; + function removeSuffix(str, suffix) { + return endsWith(str, suffix) ? str.slice(0, str.length - suffix.length) : str; + } + ts.removeSuffix = removeSuffix; + function tryRemoveSuffix(str, suffix) { + return endsWith(str, suffix) ? str.slice(0, str.length - suffix.length) : undefined; + } + ts.tryRemoveSuffix = tryRemoveSuffix; + function stringContains(str, substring) { + return str.indexOf(substring) !== -1; + } + ts.stringContains = stringContains; + /** + * Takes a string like "jquery-min.4.2.3" and returns "jquery" + */ + function removeMinAndVersionNumbers(fileName) { + // Match a "." or "-" followed by a version number or 'min' at the end of the name + var trailingMinOrVersion = /[.-]((min)|(\d+(\.\d+)*))$/; + // The "min" or version may both be present, in either order, so try applying the above twice. + return fileName.replace(trailingMinOrVersion, "").replace(trailingMinOrVersion, ""); + } + ts.removeMinAndVersionNumbers = removeMinAndVersionNumbers; + /** Remove an item from an array, moving everything to its right one space left. */ + function orderedRemoveItem(array, item) { + for (var i = 0; i < array.length; i++) { + if (array[i] === item) { + orderedRemoveItemAt(array, i); + return true; + } + } + return false; + } + ts.orderedRemoveItem = orderedRemoveItem; + /** Remove an item by index from an array, moving everything to its right one space left. */ + function orderedRemoveItemAt(array, index) { + // This seems to be faster than either `array.splice(i, 1)` or `array.copyWithin(i, i+ 1)`. + for (var i = index; i < array.length - 1; i++) { + array[i] = array[i + 1]; + } + array.pop(); + } + ts.orderedRemoveItemAt = orderedRemoveItemAt; + function unorderedRemoveItemAt(array, index) { + // Fill in the "hole" left at `index`. + array[index] = array[array.length - 1]; + array.pop(); + } + ts.unorderedRemoveItemAt = unorderedRemoveItemAt; + /** Remove the *first* occurrence of `item` from the array. */ + function unorderedRemoveItem(array, item) { + return unorderedRemoveFirstItemWhere(array, function (element) { return element === item; }); + } + ts.unorderedRemoveItem = unorderedRemoveItem; + /** Remove the *first* element satisfying `predicate`. */ + function unorderedRemoveFirstItemWhere(array, predicate) { + for (var i = 0; i < array.length; i++) { + if (predicate(array[i])) { + unorderedRemoveItemAt(array, i); + return true; + } + } + return false; + } + function createGetCanonicalFileName(useCaseSensitiveFileNames) { + return useCaseSensitiveFileNames ? identity : toFileNameLowerCase; + } + ts.createGetCanonicalFileName = createGetCanonicalFileName; + function patternText(_a) { + var prefix = _a.prefix, suffix = _a.suffix; + return prefix + "*" + suffix; + } + ts.patternText = patternText; + /** + * Given that candidate matches pattern, returns the text matching the '*'. + * E.g.: matchedText(tryParsePattern("foo*baz"), "foobarbaz") === "bar" + */ + function matchedText(pattern, candidate) { + ts.Debug.assert(isPatternMatch(pattern, candidate)); + return candidate.substring(pattern.prefix.length, candidate.length - pattern.suffix.length); + } + ts.matchedText = matchedText; + /** Return the object corresponding to the best pattern to match `candidate`. */ + function findBestPatternMatch(values, getPattern, candidate) { + var matchedValue; + // use length of prefix as betterness criteria + var longestMatchPrefixLength = -1; + for (var _i = 0, values_2 = values; _i < values_2.length; _i++) { + var v = values_2[_i]; + var pattern = getPattern(v); + if (isPatternMatch(pattern, candidate) && pattern.prefix.length > longestMatchPrefixLength) { + longestMatchPrefixLength = pattern.prefix.length; + matchedValue = v; + } + } + return matchedValue; + } + ts.findBestPatternMatch = findBestPatternMatch; + function startsWith(str, prefix) { + return str.lastIndexOf(prefix, 0) === 0; + } + ts.startsWith = startsWith; + function removePrefix(str, prefix) { + return startsWith(str, prefix) ? str.substr(prefix.length) : str; + } + ts.removePrefix = removePrefix; + function tryRemovePrefix(str, prefix, getCanonicalFileName) { + if (getCanonicalFileName === void 0) { getCanonicalFileName = identity; } + return startsWith(getCanonicalFileName(str), getCanonicalFileName(prefix)) ? str.substring(prefix.length) : undefined; + } + ts.tryRemovePrefix = tryRemovePrefix; + function isPatternMatch(_a, candidate) { + var prefix = _a.prefix, suffix = _a.suffix; + return candidate.length >= prefix.length + suffix.length && + startsWith(candidate, prefix) && + endsWith(candidate, suffix); + } + function and(f, g) { + return function (arg) { return f(arg) && g(arg); }; + } + ts.and = and; + function or() { + var fs = []; + for (var _i = 0; _i < arguments.length; _i++) { + fs[_i] = arguments[_i]; + } + return function () { + var args = []; + for (var _i = 0; _i < arguments.length; _i++) { + args[_i] = arguments[_i]; + } + for (var _a = 0, fs_1 = fs; _a < fs_1.length; _a++) { + var f = fs_1[_a]; + if (f.apply(void 0, args)) { + return true; + } + } + return false; + }; + } + ts.or = or; + function not(fn) { + return function () { + var args = []; + for (var _i = 0; _i < arguments.length; _i++) { + args[_i] = arguments[_i]; + } + return !fn.apply(void 0, args); + }; + } + ts.not = not; + function assertType(_) { } + ts.assertType = assertType; + function singleElementArray(t) { + return t === undefined ? undefined : [t]; + } + ts.singleElementArray = singleElementArray; + function enumerateInsertsAndDeletes(newItems, oldItems, comparer, inserted, deleted, unchanged) { + unchanged = unchanged || noop; + var newIndex = 0; + var oldIndex = 0; + var newLen = newItems.length; + var oldLen = oldItems.length; + while (newIndex < newLen && oldIndex < oldLen) { + var newItem = newItems[newIndex]; + var oldItem = oldItems[oldIndex]; + var compareResult = comparer(newItem, oldItem); + if (compareResult === -1 /* LessThan */) { + inserted(newItem); + newIndex++; + } + else if (compareResult === 1 /* GreaterThan */) { + deleted(oldItem); + oldIndex++; + } + else { + unchanged(oldItem, newItem); + newIndex++; + oldIndex++; + } + } + while (newIndex < newLen) { + inserted(newItems[newIndex++]); + } + while (oldIndex < oldLen) { + deleted(oldItems[oldIndex++]); + } + } + ts.enumerateInsertsAndDeletes = enumerateInsertsAndDeletes; + function fill(length, cb) { + var result = Array(length); + for (var i = 0; i < length; i++) { + result[i] = cb(i); + } + return result; + } + ts.fill = fill; + function cartesianProduct(arrays) { + var result = []; + cartesianProductWorker(arrays, result, /*outer*/ undefined, 0); + return result; + } + ts.cartesianProduct = cartesianProduct; + function cartesianProductWorker(arrays, result, outer, index) { + for (var _i = 0, _a = arrays[index]; _i < _a.length; _i++) { + var element = _a[_i]; + var inner = void 0; + if (outer) { + inner = outer.slice(); + inner.push(element); + } + else { + inner = [element]; + } + if (index === arrays.length - 1) { + result.push(inner); + } + else { + cartesianProductWorker(arrays, result, inner, index + 1); + } + } + } + function padLeft(s, length) { + while (s.length < length) { + s = " " + s; + } + return s; + } + ts.padLeft = padLeft; + function padRight(s, length) { + while (s.length < length) { + s = s + " "; + } + return s; + } + ts.padRight = padRight; +})(ts || (ts = {})); +/* @internal */ +var ts; +(function (ts) { + var Debug; + (function (Debug) { + var currentAssertionLevel = 0 /* None */; + // eslint-disable-next-line prefer-const + Debug.isDebugging = false; + var assertionCache = {}; + function getAssertionLevel() { + return currentAssertionLevel; + } + Debug.getAssertionLevel = getAssertionLevel; + function setAssertionLevel(level) { + var prevAssertionLevel = currentAssertionLevel; + currentAssertionLevel = level; + if (level > prevAssertionLevel) { + // restore assertion functions for the current assertion level (see `shouldAssertFunction`). + for (var _i = 0, _a = ts.getOwnKeys(assertionCache); _i < _a.length; _i++) { + var key = _a[_i]; + var cachedFunc = assertionCache[key]; + if (cachedFunc !== undefined && Debug[key] !== cachedFunc.assertion && level >= cachedFunc.level) { + Debug[key] = cachedFunc; + assertionCache[key] = undefined; + } + } + } + } + Debug.setAssertionLevel = setAssertionLevel; + function shouldAssert(level) { + return currentAssertionLevel >= level; + } + Debug.shouldAssert = shouldAssert; + /** + * Tests whether an assertion function should be executed. If it shouldn't, it is cached and replaced with `ts.noop`. + * Replaced assertion functions are restored when `Debug.setAssertionLevel` is set to a high enough level. + * @param level The minimum assertion level required. + * @param name The name of the current assertion function. + */ + function shouldAssertFunction(level, name) { + if (!shouldAssert(level)) { + assertionCache[name] = { level: level, assertion: Debug[name] }; + Debug[name] = ts.noop; + return false; + } + return true; + } + function fail(message, stackCrawlMark) { + debugger; + var e = new Error(message ? "Debug Failure. " + message : "Debug Failure."); + if (Error.captureStackTrace) { + Error.captureStackTrace(e, stackCrawlMark || fail); + } + throw e; + } + Debug.fail = fail; + function failBadSyntaxKind(node, message, stackCrawlMark) { + return fail((message || "Unexpected node.") + "\r\nNode " + formatSyntaxKind(node.kind) + " was unexpected.", stackCrawlMark || failBadSyntaxKind); + } + Debug.failBadSyntaxKind = failBadSyntaxKind; + function assert(expression, message, verboseDebugInfo, stackCrawlMark) { + if (!expression) { + message = message ? "False expression: " + message : "False expression."; + if (verboseDebugInfo) { + message += "\r\nVerbose Debug Information: " + (typeof verboseDebugInfo === "string" ? verboseDebugInfo : verboseDebugInfo()); + } + fail(message, stackCrawlMark || assert); + } + } + Debug.assert = assert; + function assertEqual(a, b, msg, msg2, stackCrawlMark) { + if (a !== b) { + var message = msg ? msg2 ? msg + " " + msg2 : msg : ""; + fail("Expected " + a + " === " + b + ". " + message, stackCrawlMark || assertEqual); + } + } + Debug.assertEqual = assertEqual; + function assertLessThan(a, b, msg, stackCrawlMark) { + if (a >= b) { + fail("Expected " + a + " < " + b + ". " + (msg || ""), stackCrawlMark || assertLessThan); + } + } + Debug.assertLessThan = assertLessThan; + function assertLessThanOrEqual(a, b, stackCrawlMark) { + if (a > b) { + fail("Expected " + a + " <= " + b, stackCrawlMark || assertLessThanOrEqual); + } + } + Debug.assertLessThanOrEqual = assertLessThanOrEqual; + function assertGreaterThanOrEqual(a, b, stackCrawlMark) { + if (a < b) { + fail("Expected " + a + " >= " + b, stackCrawlMark || assertGreaterThanOrEqual); + } + } + Debug.assertGreaterThanOrEqual = assertGreaterThanOrEqual; + function assertIsDefined(value, message, stackCrawlMark) { + // eslint-disable-next-line no-null/no-null + if (value === undefined || value === null) { + fail(message, stackCrawlMark || assertIsDefined); + } + } + Debug.assertIsDefined = assertIsDefined; + function checkDefined(value, message, stackCrawlMark) { + assertIsDefined(value, message, stackCrawlMark || checkDefined); + return value; + } + Debug.checkDefined = checkDefined; + /** + * @deprecated Use `checkDefined` to check whether a value is defined inline. Use `assertIsDefined` to check whether + * a value is defined at the statement level. + */ + Debug.assertDefined = checkDefined; + function assertEachIsDefined(value, message, stackCrawlMark) { + for (var _i = 0, value_1 = value; _i < value_1.length; _i++) { + var v = value_1[_i]; + assertIsDefined(v, message, stackCrawlMark || assertEachIsDefined); + } + } + Debug.assertEachIsDefined = assertEachIsDefined; + function checkEachDefined(value, message, stackCrawlMark) { + assertEachIsDefined(value, message, stackCrawlMark || checkEachDefined); + return value; + } + Debug.checkEachDefined = checkEachDefined; + /** + * @deprecated Use `checkEachDefined` to check whether the elements of an array are defined inline. Use `assertEachIsDefined` to check whether + * the elements of an array are defined at the statement level. + */ + Debug.assertEachDefined = checkEachDefined; + function assertNever(member, message, stackCrawlMark) { + if (message === void 0) { message = "Illegal value:"; } + var detail = typeof member === "object" && ts.hasProperty(member, "kind") && ts.hasProperty(member, "pos") && formatSyntaxKind ? "SyntaxKind: " + formatSyntaxKind(member.kind) : JSON.stringify(member); + return fail(message + " " + detail, stackCrawlMark || assertNever); + } + Debug.assertNever = assertNever; + function assertEachNode(nodes, test, message, stackCrawlMark) { + if (shouldAssertFunction(1 /* Normal */, "assertEachNode")) { + assert(test === undefined || ts.every(nodes, test), message || "Unexpected node.", function () { return "Node array did not pass test '" + getFunctionName(test) + "'."; }, stackCrawlMark || assertEachNode); + } + } + Debug.assertEachNode = assertEachNode; + function assertNode(node, test, message, stackCrawlMark) { + if (shouldAssertFunction(1 /* Normal */, "assertNode")) { + assert(node !== undefined && (test === undefined || test(node)), message || "Unexpected node.", function () { return "Node " + formatSyntaxKind(node.kind) + " did not pass test '" + getFunctionName(test) + "'."; }, stackCrawlMark || assertNode); + } + } + Debug.assertNode = assertNode; + function assertNotNode(node, test, message, stackCrawlMark) { + if (shouldAssertFunction(1 /* Normal */, "assertNotNode")) { + assert(node === undefined || test === undefined || !test(node), message || "Unexpected node.", function () { return "Node " + formatSyntaxKind(node.kind) + " should not have passed test '" + getFunctionName(test) + "'."; }, stackCrawlMark || assertNotNode); + } + } + Debug.assertNotNode = assertNotNode; + function assertOptionalNode(node, test, message, stackCrawlMark) { + if (shouldAssertFunction(1 /* Normal */, "assertOptionalNode")) { + assert(test === undefined || node === undefined || test(node), message || "Unexpected node.", function () { return "Node " + formatSyntaxKind(node.kind) + " did not pass test '" + getFunctionName(test) + "'."; }, stackCrawlMark || assertOptionalNode); + } + } + Debug.assertOptionalNode = assertOptionalNode; + function assertOptionalToken(node, kind, message, stackCrawlMark) { + if (shouldAssertFunction(1 /* Normal */, "assertOptionalToken")) { + assert(kind === undefined || node === undefined || node.kind === kind, message || "Unexpected node.", function () { return "Node " + formatSyntaxKind(node.kind) + " was not a '" + formatSyntaxKind(kind) + "' token."; }, stackCrawlMark || assertOptionalToken); + } + } + Debug.assertOptionalToken = assertOptionalToken; + function assertMissingNode(node, message, stackCrawlMark) { + if (shouldAssertFunction(1 /* Normal */, "assertMissingNode")) { + assert(node === undefined, message || "Unexpected node.", function () { return "Node " + formatSyntaxKind(node.kind) + " was unexpected'."; }, stackCrawlMark || assertMissingNode); + } + } + Debug.assertMissingNode = assertMissingNode; + function getFunctionName(func) { + if (typeof func !== "function") { + return ""; + } + else if (func.hasOwnProperty("name")) { + return func.name; + } + else { + var text = Function.prototype.toString.call(func); + var match = /^function\s+([\w\$]+)\s*\(/.exec(text); + return match ? match[1] : ""; + } + } + Debug.getFunctionName = getFunctionName; + function formatSymbol(symbol) { + return "{ name: " + ts.unescapeLeadingUnderscores(symbol.escapedName) + "; flags: " + formatSymbolFlags(symbol.flags) + "; declarations: " + ts.map(symbol.declarations, function (node) { return formatSyntaxKind(node.kind); }) + " }"; + } + Debug.formatSymbol = formatSymbol; + /** + * Formats an enum value as a string for debugging and debug assertions. + */ + function formatEnum(value, enumObject, isFlags) { + if (value === void 0) { value = 0; } + var members = getEnumMembers(enumObject); + if (value === 0) { + return members.length > 0 && members[0][0] === 0 ? members[0][1] : "0"; + } + if (isFlags) { + var result = ""; + var remainingFlags = value; + for (var _i = 0, members_1 = members; _i < members_1.length; _i++) { + var _a = members_1[_i], enumValue = _a[0], enumName = _a[1]; + if (enumValue > value) { + break; + } + if (enumValue !== 0 && enumValue & value) { + result = "" + result + (result ? "|" : "") + enumName; + remainingFlags &= ~enumValue; + } + } + if (remainingFlags === 0) { + return result; + } + } + else { + for (var _b = 0, members_2 = members; _b < members_2.length; _b++) { + var _c = members_2[_b], enumValue = _c[0], enumName = _c[1]; + if (enumValue === value) { + return enumName; + } + } + } + return value.toString(); + } + Debug.formatEnum = formatEnum; + function getEnumMembers(enumObject) { + var result = []; + for (var name in enumObject) { + var value = enumObject[name]; + if (typeof value === "number") { + result.push([value, name]); + } + } + return ts.stableSort(result, function (x, y) { return ts.compareValues(x[0], y[0]); }); + } + function formatSyntaxKind(kind) { + return formatEnum(kind, ts.SyntaxKind, /*isFlags*/ false); + } + Debug.formatSyntaxKind = formatSyntaxKind; + function formatNodeFlags(flags) { + return formatEnum(flags, ts.NodeFlags, /*isFlags*/ true); + } + Debug.formatNodeFlags = formatNodeFlags; + function formatModifierFlags(flags) { + return formatEnum(flags, ts.ModifierFlags, /*isFlags*/ true); + } + Debug.formatModifierFlags = formatModifierFlags; + function formatTransformFlags(flags) { + return formatEnum(flags, ts.TransformFlags, /*isFlags*/ true); + } + Debug.formatTransformFlags = formatTransformFlags; + function formatEmitFlags(flags) { + return formatEnum(flags, ts.EmitFlags, /*isFlags*/ true); + } + Debug.formatEmitFlags = formatEmitFlags; + function formatSymbolFlags(flags) { + return formatEnum(flags, ts.SymbolFlags, /*isFlags*/ true); + } + Debug.formatSymbolFlags = formatSymbolFlags; + function formatTypeFlags(flags) { + return formatEnum(flags, ts.TypeFlags, /*isFlags*/ true); + } + Debug.formatTypeFlags = formatTypeFlags; + function formatObjectFlags(flags) { + return formatEnum(flags, ts.ObjectFlags, /*isFlags*/ true); + } + Debug.formatObjectFlags = formatObjectFlags; + var isDebugInfoEnabled = false; + var extendedDebugModule; + function extendedDebug() { + enableDebugInfo(); + if (!extendedDebugModule) { + throw new Error("Debugging helpers could not be loaded."); + } + return extendedDebugModule; + } + function printControlFlowGraph(flowNode) { + return console.log(formatControlFlowGraph(flowNode)); + } + Debug.printControlFlowGraph = printControlFlowGraph; + function formatControlFlowGraph(flowNode) { + return extendedDebug().formatControlFlowGraph(flowNode); + } + Debug.formatControlFlowGraph = formatControlFlowGraph; + function attachFlowNodeDebugInfo(flowNode) { + if (isDebugInfoEnabled) { + if (!("__debugFlowFlags" in flowNode)) { // eslint-disable-line no-in-operator + Object.defineProperties(flowNode, { + __debugFlowFlags: { get: function () { return formatEnum(this.flags, ts.FlowFlags, /*isFlags*/ true); } }, + __debugToString: { value: function () { return formatControlFlowGraph(this); } } + }); + } + } + } + Debug.attachFlowNodeDebugInfo = attachFlowNodeDebugInfo; + /** + * Injects debug information into frequently used types. + */ + function enableDebugInfo() { + if (isDebugInfoEnabled) + return; + // Add additional properties in debug mode to assist with debugging. + Object.defineProperties(ts.objectAllocator.getSymbolConstructor().prototype, { + __debugFlags: { get: function () { return formatSymbolFlags(this.flags); } } + }); + Object.defineProperties(ts.objectAllocator.getTypeConstructor().prototype, { + __debugFlags: { get: function () { return formatTypeFlags(this.flags); } }, + __debugObjectFlags: { get: function () { return this.flags & 524288 /* Object */ ? formatObjectFlags(this.objectFlags) : ""; } }, + __debugTypeToString: { value: function () { return this.checker.typeToString(this); } }, + }); + var nodeConstructors = [ + ts.objectAllocator.getNodeConstructor(), + ts.objectAllocator.getIdentifierConstructor(), + ts.objectAllocator.getTokenConstructor(), + ts.objectAllocator.getSourceFileConstructor() + ]; + for (var _i = 0, nodeConstructors_1 = nodeConstructors; _i < nodeConstructors_1.length; _i++) { + var ctor = nodeConstructors_1[_i]; + if (!ctor.prototype.hasOwnProperty("__debugKind")) { + Object.defineProperties(ctor.prototype, { + __debugKind: { get: function () { return formatSyntaxKind(this.kind); } }, + __debugNodeFlags: { get: function () { return formatNodeFlags(this.flags); } }, + __debugModifierFlags: { get: function () { return formatModifierFlags(ts.getModifierFlagsNoCache(this)); } }, + __debugTransformFlags: { get: function () { return formatTransformFlags(this.transformFlags); } }, + __debugIsParseTreeNode: { get: function () { return ts.isParseTreeNode(this); } }, + __debugEmitFlags: { get: function () { return formatEmitFlags(ts.getEmitFlags(this)); } }, + __debugGetText: { + value: function (includeTrivia) { + if (ts.nodeIsSynthesized(this)) + return ""; + var parseNode = ts.getParseTreeNode(this); + var sourceFile = parseNode && ts.getSourceFileOfNode(parseNode); + return sourceFile ? ts.getSourceTextOfNodeFromSourceFile(sourceFile, parseNode, includeTrivia) : ""; + } + } + }); + } + } + // attempt to load extended debugging information + try { + if (ts.sys && ts.sys.require) { + var basePath = ts.getDirectoryPath(ts.resolvePath(ts.sys.getExecutingFilePath())); + var result = ts.sys.require(basePath, "./compiler-debug"); + if (!result.error) { + result.module.init(ts); + extendedDebugModule = result.module; + } + } + } + catch (_a) { + // do nothing + } + isDebugInfoEnabled = true; + } + Debug.enableDebugInfo = enableDebugInfo; + })(Debug = ts.Debug || (ts.Debug = {})); +})(ts || (ts = {})); +/*@internal*/ +var ts; +(function (ts) { + /** Gets a timestamp with (at least) ms resolution */ + ts.timestamp = typeof performance !== "undefined" && performance.now ? function () { return performance.now(); } : Date.now ? Date.now : function () { return +(new Date()); }; +})(ts || (ts = {})); +/*@internal*/ +/** Performance measurements for the compiler. */ +var ts; +(function (ts) { + var performance; + (function (performance) { + // NOTE: cannot use ts.noop as core.ts loads after this + var profilerEvent = typeof onProfilerEvent === "function" && onProfilerEvent.profiler === true ? onProfilerEvent : function () { }; + var enabled = false; + var profilerStart = 0; + var counts; + var marks; + var measures; + function createTimerIf(condition, measureName, startMarkName, endMarkName) { + return condition ? createTimer(measureName, startMarkName, endMarkName) : performance.nullTimer; + } + performance.createTimerIf = createTimerIf; + function createTimer(measureName, startMarkName, endMarkName) { + var enterCount = 0; + return { + enter: enter, + exit: exit + }; + function enter() { + if (++enterCount === 1) { + mark(startMarkName); + } + } + function exit() { + if (--enterCount === 0) { + mark(endMarkName); + measure(measureName, startMarkName, endMarkName); + } + else if (enterCount < 0) { + ts.Debug.fail("enter/exit count does not match."); + } + } + } + performance.createTimer = createTimer; + performance.nullTimer = { enter: ts.noop, exit: ts.noop }; + /** + * Marks a performance event. + * + * @param markName The name of the mark. + */ + function mark(markName) { + if (enabled) { + marks.set(markName, ts.timestamp()); + counts.set(markName, (counts.get(markName) || 0) + 1); + profilerEvent(markName); + } + } + performance.mark = mark; + /** + * Adds a performance measurement with the specified name. + * + * @param measureName The name of the performance measurement. + * @param startMarkName The name of the starting mark. If not supplied, the point at which the + * profiler was enabled is used. + * @param endMarkName The name of the ending mark. If not supplied, the current timestamp is + * used. + */ + function measure(measureName, startMarkName, endMarkName) { + if (enabled) { + var end = endMarkName && marks.get(endMarkName) || ts.timestamp(); + var start = startMarkName && marks.get(startMarkName) || profilerStart; + measures.set(measureName, (measures.get(measureName) || 0) + (end - start)); + } + } + performance.measure = measure; + /** + * Gets the number of times a marker was encountered. + * + * @param markName The name of the mark. + */ + function getCount(markName) { + return counts && counts.get(markName) || 0; + } + performance.getCount = getCount; + /** + * Gets the total duration of all measurements with the supplied name. + * + * @param measureName The name of the measure whose durations should be accumulated. + */ + function getDuration(measureName) { + return measures && measures.get(measureName) || 0; + } + performance.getDuration = getDuration; + /** + * Iterate over each measure, performing some action + * + * @param cb The action to perform for each measure + */ + function forEachMeasure(cb) { + measures.forEach(function (measure, key) { + cb(key, measure); + }); + } + performance.forEachMeasure = forEachMeasure; + /** Enables (and resets) performance measurements for the compiler. */ + function enable() { + counts = ts.createMap(); + marks = ts.createMap(); + measures = ts.createMap(); + enabled = true; + profilerStart = ts.timestamp(); + } + performance.enable = enable; + /** Disables performance measurements for the compiler. */ + function disable() { + enabled = false; + } + performance.disable = disable; + })(performance = ts.performance || (ts.performance = {})); +})(ts || (ts = {})); +/* @internal */ +var ts; +(function (ts) { + var _a; + var nullLogger = { + logEvent: ts.noop, + logErrEvent: ts.noop, + logPerfEvent: ts.noop, + logInfoEvent: ts.noop, + logStartCommand: ts.noop, + logStopCommand: ts.noop, + logStartUpdateProgram: ts.noop, + logStopUpdateProgram: ts.noop, + logStartUpdateGraph: ts.noop, + logStopUpdateGraph: ts.noop, + logStartResolveModule: ts.noop, + logStopResolveModule: ts.noop, + logStartParseSourceFile: ts.noop, + logStopParseSourceFile: ts.noop, + logStartReadFile: ts.noop, + logStopReadFile: ts.noop, + logStartBindFile: ts.noop, + logStopBindFile: ts.noop, + logStartScheduledOperation: ts.noop, + logStopScheduledOperation: ts.noop, + }; + // Load optional module to enable Event Tracing for Windows + // See https://github.com/microsoft/typescript-etw for more information + var etwModule; + try { + var etwModulePath = (_a = process.env.TS_ETW_MODULE_PATH) !== null && _a !== void 0 ? _a : "./node_modules/@microsoft/typescript-etw"; + // require() will throw an exception if the module is not found + // It may also return undefined if not installed properly + etwModule = require(etwModulePath); + } + catch (e) { + etwModule = undefined; + } + /** Performance logger that will generate ETW events if possible - check for `logEvent` member, as `etwModule` will be `{}` when browserified */ + ts.perfLogger = etwModule && etwModule.logEvent ? etwModule : nullLogger; +})(ts || (ts = {})); +/* @internal */ +var ts; +(function (ts) { + // https://semver.org/#spec-item-2 + // > A normal version number MUST take the form X.Y.Z where X, Y, and Z are non-negative + // > integers, and MUST NOT contain leading zeroes. X is the major version, Y is the minor + // > version, and Z is the patch version. Each element MUST increase numerically. + // + // NOTE: We differ here in that we allow X and X.Y, with missing parts having the default + // value of `0`. + var versionRegExp = /^(0|[1-9]\d*)(?:\.(0|[1-9]\d*)(?:\.(0|[1-9]\d*)(?:\-([a-z0-9-.]+))?(?:\+([a-z0-9-.]+))?)?)?$/i; + // https://semver.org/#spec-item-9 + // > A pre-release version MAY be denoted by appending a hyphen and a series of dot separated + // > identifiers immediately following the patch version. Identifiers MUST comprise only ASCII + // > alphanumerics and hyphen [0-9A-Za-z-]. Identifiers MUST NOT be empty. Numeric identifiers + // > MUST NOT include leading zeroes. + var prereleaseRegExp = /^(?:0|[1-9]\d*|[a-z-][a-z0-9-]*)(?:\.(?:0|[1-9]\d*|[a-z-][a-z0-9-]*))*$/i; + // https://semver.org/#spec-item-10 + // > Build metadata MAY be denoted by appending a plus sign and a series of dot separated + // > identifiers immediately following the patch or pre-release version. Identifiers MUST + // > comprise only ASCII alphanumerics and hyphen [0-9A-Za-z-]. Identifiers MUST NOT be empty. + var buildRegExp = /^[a-z0-9-]+(?:\.[a-z0-9-]+)*$/i; + // https://semver.org/#spec-item-9 + // > Numeric identifiers MUST NOT include leading zeroes. + var numericIdentifierRegExp = /^(0|[1-9]\d*)$/; + /** + * Describes a precise semantic version number, https://semver.org + */ + var Version = /** @class */ (function () { + function Version(major, minor, patch, prerelease, build) { + if (minor === void 0) { minor = 0; } + if (patch === void 0) { patch = 0; } + if (prerelease === void 0) { prerelease = ""; } + if (build === void 0) { build = ""; } + if (typeof major === "string") { + var result = ts.Debug.checkDefined(tryParseComponents(major), "Invalid version"); + (major = result.major, minor = result.minor, patch = result.patch, prerelease = result.prerelease, build = result.build); + } + ts.Debug.assert(major >= 0, "Invalid argument: major"); + ts.Debug.assert(minor >= 0, "Invalid argument: minor"); + ts.Debug.assert(patch >= 0, "Invalid argument: patch"); + ts.Debug.assert(!prerelease || prereleaseRegExp.test(prerelease), "Invalid argument: prerelease"); + ts.Debug.assert(!build || buildRegExp.test(build), "Invalid argument: build"); + this.major = major; + this.minor = minor; + this.patch = patch; + this.prerelease = prerelease ? prerelease.split(".") : ts.emptyArray; + this.build = build ? build.split(".") : ts.emptyArray; + } + Version.tryParse = function (text) { + var result = tryParseComponents(text); + if (!result) + return undefined; + var major = result.major, minor = result.minor, patch = result.patch, prerelease = result.prerelease, build = result.build; + return new Version(major, minor, patch, prerelease, build); + }; + Version.prototype.compareTo = function (other) { + // https://semver.org/#spec-item-11 + // > Precedence is determined by the first difference when comparing each of these + // > identifiers from left to right as follows: Major, minor, and patch versions are + // > always compared numerically. + // + // https://semver.org/#spec-item-11 + // > Precedence for two pre-release versions with the same major, minor, and patch version + // > MUST be determined by comparing each dot separated identifier from left to right until + // > a difference is found [...] + // + // https://semver.org/#spec-item-11 + // > Build metadata does not figure into precedence + if (this === other) + return 0 /* EqualTo */; + if (other === undefined) + return 1 /* GreaterThan */; + return ts.compareValues(this.major, other.major) + || ts.compareValues(this.minor, other.minor) + || ts.compareValues(this.patch, other.patch) + || comparePrerelaseIdentifiers(this.prerelease, other.prerelease); + }; + Version.prototype.increment = function (field) { + switch (field) { + case "major": return new Version(this.major + 1, 0, 0); + case "minor": return new Version(this.major, this.minor + 1, 0); + case "patch": return new Version(this.major, this.minor, this.patch + 1); + default: return ts.Debug.assertNever(field); + } + }; + Version.prototype.toString = function () { + var result = this.major + "." + this.minor + "." + this.patch; + if (ts.some(this.prerelease)) + result += "-" + this.prerelease.join("."); + if (ts.some(this.build)) + result += "+" + this.build.join("."); + return result; + }; + Version.zero = new Version(0, 0, 0); + return Version; + }()); + ts.Version = Version; + function tryParseComponents(text) { + var match = versionRegExp.exec(text); + if (!match) + return undefined; + var major = match[1], _a = match[2], minor = _a === void 0 ? "0" : _a, _b = match[3], patch = _b === void 0 ? "0" : _b, _c = match[4], prerelease = _c === void 0 ? "" : _c, _d = match[5], build = _d === void 0 ? "" : _d; + if (prerelease && !prereleaseRegExp.test(prerelease)) + return undefined; + if (build && !buildRegExp.test(build)) + return undefined; + return { + major: parseInt(major, 10), + minor: parseInt(minor, 10), + patch: parseInt(patch, 10), + prerelease: prerelease, + build: build + }; + } + function comparePrerelaseIdentifiers(left, right) { + // https://semver.org/#spec-item-11 + // > When major, minor, and patch are equal, a pre-release version has lower precedence + // > than a normal version. + if (left === right) + return 0 /* EqualTo */; + if (left.length === 0) + return right.length === 0 ? 0 /* EqualTo */ : 1 /* GreaterThan */; + if (right.length === 0) + return -1 /* LessThan */; + // https://semver.org/#spec-item-11 + // > Precedence for two pre-release versions with the same major, minor, and patch version + // > MUST be determined by comparing each dot separated identifier from left to right until + // > a difference is found [...] + var length = Math.min(left.length, right.length); + for (var i = 0; i < length; i++) { + var leftIdentifier = left[i]; + var rightIdentifier = right[i]; + if (leftIdentifier === rightIdentifier) + continue; + var leftIsNumeric = numericIdentifierRegExp.test(leftIdentifier); + var rightIsNumeric = numericIdentifierRegExp.test(rightIdentifier); + if (leftIsNumeric || rightIsNumeric) { + // https://semver.org/#spec-item-11 + // > Numeric identifiers always have lower precedence than non-numeric identifiers. + if (leftIsNumeric !== rightIsNumeric) + return leftIsNumeric ? -1 /* LessThan */ : 1 /* GreaterThan */; + // https://semver.org/#spec-item-11 + // > identifiers consisting of only digits are compared numerically + var result = ts.compareValues(+leftIdentifier, +rightIdentifier); + if (result) + return result; + } + else { + // https://semver.org/#spec-item-11 + // > identifiers with letters or hyphens are compared lexically in ASCII sort order. + var result = ts.compareStringsCaseSensitive(leftIdentifier, rightIdentifier); + if (result) + return result; + } + } + // https://semver.org/#spec-item-11 + // > A larger set of pre-release fields has a higher precedence than a smaller set, if all + // > of the preceding identifiers are equal. + return ts.compareValues(left.length, right.length); + } + /** + * Describes a semantic version range, per https://github.com/npm/node-semver#ranges + */ + var VersionRange = /** @class */ (function () { + function VersionRange(spec) { + this._alternatives = spec ? ts.Debug.checkDefined(parseRange(spec), "Invalid range spec.") : ts.emptyArray; + } + VersionRange.tryParse = function (text) { + var sets = parseRange(text); + if (sets) { + var range = new VersionRange(""); + range._alternatives = sets; + return range; + } + return undefined; + }; + VersionRange.prototype.test = function (version) { + if (typeof version === "string") + version = new Version(version); + return testDisjunction(version, this._alternatives); + }; + VersionRange.prototype.toString = function () { + return formatDisjunction(this._alternatives); + }; + return VersionRange; + }()); + ts.VersionRange = VersionRange; + // https://github.com/npm/node-semver#range-grammar + // + // range-set ::= range ( logical-or range ) * + // range ::= hyphen | simple ( ' ' simple ) * | '' + // logical-or ::= ( ' ' ) * '||' ( ' ' ) * + var logicalOrRegExp = /\s*\|\|\s*/g; + var whitespaceRegExp = /\s+/g; + // https://github.com/npm/node-semver#range-grammar + // + // partial ::= xr ( '.' xr ( '.' xr qualifier ? )? )? + // xr ::= 'x' | 'X' | '*' | nr + // nr ::= '0' | ['1'-'9'] ( ['0'-'9'] ) * + // qualifier ::= ( '-' pre )? ( '+' build )? + // pre ::= parts + // build ::= parts + // parts ::= part ( '.' part ) * + // part ::= nr | [-0-9A-Za-z]+ + var partialRegExp = /^([xX*0]|[1-9]\d*)(?:\.([xX*0]|[1-9]\d*)(?:\.([xX*0]|[1-9]\d*)(?:-([a-z0-9-.]+))?(?:\+([a-z0-9-.]+))?)?)?$/i; + // https://github.com/npm/node-semver#range-grammar + // + // hyphen ::= partial ' - ' partial + var hyphenRegExp = /^\s*([a-z0-9-+.*]+)\s+-\s+([a-z0-9-+.*]+)\s*$/i; + // https://github.com/npm/node-semver#range-grammar + // + // simple ::= primitive | partial | tilde | caret + // primitive ::= ( '<' | '>' | '>=' | '<=' | '=' ) partial + // tilde ::= '~' partial + // caret ::= '^' partial + var rangeRegExp = /^\s*(~|\^|<|<=|>|>=|=)?\s*([a-z0-9-+.*]+)$/i; + function parseRange(text) { + var alternatives = []; + for (var _i = 0, _a = text.trim().split(logicalOrRegExp); _i < _a.length; _i++) { + var range = _a[_i]; + if (!range) + continue; + var comparators = []; + var match = hyphenRegExp.exec(range); + if (match) { + if (!parseHyphen(match[1], match[2], comparators)) + return undefined; + } + else { + for (var _b = 0, _c = range.split(whitespaceRegExp); _b < _c.length; _b++) { + var simple = _c[_b]; + var match_1 = rangeRegExp.exec(simple); + if (!match_1 || !parseComparator(match_1[1], match_1[2], comparators)) + return undefined; + } + } + alternatives.push(comparators); + } + return alternatives; + } + function parsePartial(text) { + var match = partialRegExp.exec(text); + if (!match) + return undefined; + var major = match[1], _a = match[2], minor = _a === void 0 ? "*" : _a, _b = match[3], patch = _b === void 0 ? "*" : _b, prerelease = match[4], build = match[5]; + var version = new Version(isWildcard(major) ? 0 : parseInt(major, 10), isWildcard(major) || isWildcard(minor) ? 0 : parseInt(minor, 10), isWildcard(major) || isWildcard(minor) || isWildcard(patch) ? 0 : parseInt(patch, 10), prerelease, build); + return { version: version, major: major, minor: minor, patch: patch }; + } + function parseHyphen(left, right, comparators) { + var leftResult = parsePartial(left); + if (!leftResult) + return false; + var rightResult = parsePartial(right); + if (!rightResult) + return false; + if (!isWildcard(leftResult.major)) { + comparators.push(createComparator(">=", leftResult.version)); + } + if (!isWildcard(rightResult.major)) { + comparators.push(isWildcard(rightResult.minor) ? createComparator("<", rightResult.version.increment("major")) : + isWildcard(rightResult.patch) ? createComparator("<", rightResult.version.increment("minor")) : + createComparator("<=", rightResult.version)); + } + return true; + } + function parseComparator(operator, text, comparators) { + var result = parsePartial(text); + if (!result) + return false; + var version = result.version, major = result.major, minor = result.minor, patch = result.patch; + if (!isWildcard(major)) { + switch (operator) { + case "~": + comparators.push(createComparator(">=", version)); + comparators.push(createComparator("<", version.increment(isWildcard(minor) ? "major" : + "minor"))); + break; + case "^": + comparators.push(createComparator(">=", version)); + comparators.push(createComparator("<", version.increment(version.major > 0 || isWildcard(minor) ? "major" : + version.minor > 0 || isWildcard(patch) ? "minor" : + "patch"))); + break; + case "<": + case ">=": + comparators.push(createComparator(operator, version)); + break; + case "<=": + case ">": + comparators.push(isWildcard(minor) ? createComparator(operator === "<=" ? "<" : ">=", version.increment("major")) : + isWildcard(patch) ? createComparator(operator === "<=" ? "<" : ">=", version.increment("minor")) : + createComparator(operator, version)); + break; + case "=": + case undefined: + if (isWildcard(minor) || isWildcard(patch)) { + comparators.push(createComparator(">=", version)); + comparators.push(createComparator("<", version.increment(isWildcard(minor) ? "major" : "minor"))); + } + else { + comparators.push(createComparator("=", version)); + } + break; + default: + // unrecognized + return false; + } + } + else if (operator === "<" || operator === ">") { + comparators.push(createComparator("<", Version.zero)); + } + return true; + } + function isWildcard(part) { + return part === "*" || part === "x" || part === "X"; + } + function createComparator(operator, operand) { + return { operator: operator, operand: operand }; + } + function testDisjunction(version, alternatives) { + // an empty disjunction is treated as "*" (all versions) + if (alternatives.length === 0) + return true; + for (var _i = 0, alternatives_1 = alternatives; _i < alternatives_1.length; _i++) { + var alternative = alternatives_1[_i]; + if (testAlternative(version, alternative)) + return true; + } + return false; + } + function testAlternative(version, comparators) { + for (var _i = 0, comparators_1 = comparators; _i < comparators_1.length; _i++) { + var comparator = comparators_1[_i]; + if (!testComparator(version, comparator.operator, comparator.operand)) + return false; + } + return true; + } + function testComparator(version, operator, operand) { + var cmp = version.compareTo(operand); + switch (operator) { + case "<": return cmp < 0; + case "<=": return cmp <= 0; + case ">": return cmp > 0; + case ">=": return cmp >= 0; + case "=": return cmp === 0; + default: return ts.Debug.assertNever(operator); + } + } + function formatDisjunction(alternatives) { + return ts.map(alternatives, formatAlternative).join(" || ") || "*"; + } + function formatAlternative(comparators) { + return ts.map(comparators, formatComparator).join(" "); + } + function formatComparator(comparator) { + return "" + comparator.operator + comparator.operand; + } +})(ts || (ts = {})); +var ts; +(function (ts) { + // token > SyntaxKind.Identifier => token is a keyword + // Also, If you add a new SyntaxKind be sure to keep the `Markers` section at the bottom in sync + var SyntaxKind; + (function (SyntaxKind) { + SyntaxKind[SyntaxKind["Unknown"] = 0] = "Unknown"; + SyntaxKind[SyntaxKind["EndOfFileToken"] = 1] = "EndOfFileToken"; + SyntaxKind[SyntaxKind["SingleLineCommentTrivia"] = 2] = "SingleLineCommentTrivia"; + SyntaxKind[SyntaxKind["MultiLineCommentTrivia"] = 3] = "MultiLineCommentTrivia"; + SyntaxKind[SyntaxKind["NewLineTrivia"] = 4] = "NewLineTrivia"; + SyntaxKind[SyntaxKind["WhitespaceTrivia"] = 5] = "WhitespaceTrivia"; + // We detect and preserve #! on the first line + SyntaxKind[SyntaxKind["ShebangTrivia"] = 6] = "ShebangTrivia"; + // We detect and provide better error recovery when we encounter a git merge marker. This + // allows us to edit files with git-conflict markers in them in a much more pleasant manner. + SyntaxKind[SyntaxKind["ConflictMarkerTrivia"] = 7] = "ConflictMarkerTrivia"; + // Literals + SyntaxKind[SyntaxKind["NumericLiteral"] = 8] = "NumericLiteral"; + SyntaxKind[SyntaxKind["BigIntLiteral"] = 9] = "BigIntLiteral"; + SyntaxKind[SyntaxKind["StringLiteral"] = 10] = "StringLiteral"; + SyntaxKind[SyntaxKind["JsxText"] = 11] = "JsxText"; + SyntaxKind[SyntaxKind["JsxTextAllWhiteSpaces"] = 12] = "JsxTextAllWhiteSpaces"; + SyntaxKind[SyntaxKind["RegularExpressionLiteral"] = 13] = "RegularExpressionLiteral"; + SyntaxKind[SyntaxKind["NoSubstitutionTemplateLiteral"] = 14] = "NoSubstitutionTemplateLiteral"; + // Pseudo-literals + SyntaxKind[SyntaxKind["TemplateHead"] = 15] = "TemplateHead"; + SyntaxKind[SyntaxKind["TemplateMiddle"] = 16] = "TemplateMiddle"; + SyntaxKind[SyntaxKind["TemplateTail"] = 17] = "TemplateTail"; + // Punctuation + SyntaxKind[SyntaxKind["OpenBraceToken"] = 18] = "OpenBraceToken"; + SyntaxKind[SyntaxKind["CloseBraceToken"] = 19] = "CloseBraceToken"; + SyntaxKind[SyntaxKind["OpenParenToken"] = 20] = "OpenParenToken"; + SyntaxKind[SyntaxKind["CloseParenToken"] = 21] = "CloseParenToken"; + SyntaxKind[SyntaxKind["OpenBracketToken"] = 22] = "OpenBracketToken"; + SyntaxKind[SyntaxKind["CloseBracketToken"] = 23] = "CloseBracketToken"; + SyntaxKind[SyntaxKind["DotToken"] = 24] = "DotToken"; + SyntaxKind[SyntaxKind["DotDotDotToken"] = 25] = "DotDotDotToken"; + SyntaxKind[SyntaxKind["SemicolonToken"] = 26] = "SemicolonToken"; + SyntaxKind[SyntaxKind["CommaToken"] = 27] = "CommaToken"; + SyntaxKind[SyntaxKind["QuestionDotToken"] = 28] = "QuestionDotToken"; + SyntaxKind[SyntaxKind["LessThanToken"] = 29] = "LessThanToken"; + SyntaxKind[SyntaxKind["LessThanSlashToken"] = 30] = "LessThanSlashToken"; + SyntaxKind[SyntaxKind["GreaterThanToken"] = 31] = "GreaterThanToken"; + SyntaxKind[SyntaxKind["LessThanEqualsToken"] = 32] = "LessThanEqualsToken"; + SyntaxKind[SyntaxKind["GreaterThanEqualsToken"] = 33] = "GreaterThanEqualsToken"; + SyntaxKind[SyntaxKind["EqualsEqualsToken"] = 34] = "EqualsEqualsToken"; + SyntaxKind[SyntaxKind["ExclamationEqualsToken"] = 35] = "ExclamationEqualsToken"; + SyntaxKind[SyntaxKind["EqualsEqualsEqualsToken"] = 36] = "EqualsEqualsEqualsToken"; + SyntaxKind[SyntaxKind["ExclamationEqualsEqualsToken"] = 37] = "ExclamationEqualsEqualsToken"; + SyntaxKind[SyntaxKind["EqualsGreaterThanToken"] = 38] = "EqualsGreaterThanToken"; + SyntaxKind[SyntaxKind["PlusToken"] = 39] = "PlusToken"; + SyntaxKind[SyntaxKind["MinusToken"] = 40] = "MinusToken"; + SyntaxKind[SyntaxKind["AsteriskToken"] = 41] = "AsteriskToken"; + SyntaxKind[SyntaxKind["AsteriskAsteriskToken"] = 42] = "AsteriskAsteriskToken"; + SyntaxKind[SyntaxKind["SlashToken"] = 43] = "SlashToken"; + SyntaxKind[SyntaxKind["PercentToken"] = 44] = "PercentToken"; + SyntaxKind[SyntaxKind["PlusPlusToken"] = 45] = "PlusPlusToken"; + SyntaxKind[SyntaxKind["MinusMinusToken"] = 46] = "MinusMinusToken"; + SyntaxKind[SyntaxKind["LessThanLessThanToken"] = 47] = "LessThanLessThanToken"; + SyntaxKind[SyntaxKind["GreaterThanGreaterThanToken"] = 48] = "GreaterThanGreaterThanToken"; + SyntaxKind[SyntaxKind["GreaterThanGreaterThanGreaterThanToken"] = 49] = "GreaterThanGreaterThanGreaterThanToken"; + SyntaxKind[SyntaxKind["AmpersandToken"] = 50] = "AmpersandToken"; + SyntaxKind[SyntaxKind["BarToken"] = 51] = "BarToken"; + SyntaxKind[SyntaxKind["CaretToken"] = 52] = "CaretToken"; + SyntaxKind[SyntaxKind["ExclamationToken"] = 53] = "ExclamationToken"; + SyntaxKind[SyntaxKind["TildeToken"] = 54] = "TildeToken"; + SyntaxKind[SyntaxKind["AmpersandAmpersandToken"] = 55] = "AmpersandAmpersandToken"; + SyntaxKind[SyntaxKind["BarBarToken"] = 56] = "BarBarToken"; + SyntaxKind[SyntaxKind["QuestionToken"] = 57] = "QuestionToken"; + SyntaxKind[SyntaxKind["ColonToken"] = 58] = "ColonToken"; + SyntaxKind[SyntaxKind["AtToken"] = 59] = "AtToken"; + SyntaxKind[SyntaxKind["QuestionQuestionToken"] = 60] = "QuestionQuestionToken"; + /** Only the JSDoc scanner produces BacktickToken. The normal scanner produces NoSubstitutionTemplateLiteral and related kinds. */ + SyntaxKind[SyntaxKind["BacktickToken"] = 61] = "BacktickToken"; + // Assignments + SyntaxKind[SyntaxKind["EqualsToken"] = 62] = "EqualsToken"; + SyntaxKind[SyntaxKind["PlusEqualsToken"] = 63] = "PlusEqualsToken"; + SyntaxKind[SyntaxKind["MinusEqualsToken"] = 64] = "MinusEqualsToken"; + SyntaxKind[SyntaxKind["AsteriskEqualsToken"] = 65] = "AsteriskEqualsToken"; + SyntaxKind[SyntaxKind["AsteriskAsteriskEqualsToken"] = 66] = "AsteriskAsteriskEqualsToken"; + SyntaxKind[SyntaxKind["SlashEqualsToken"] = 67] = "SlashEqualsToken"; + SyntaxKind[SyntaxKind["PercentEqualsToken"] = 68] = "PercentEqualsToken"; + SyntaxKind[SyntaxKind["LessThanLessThanEqualsToken"] = 69] = "LessThanLessThanEqualsToken"; + SyntaxKind[SyntaxKind["GreaterThanGreaterThanEqualsToken"] = 70] = "GreaterThanGreaterThanEqualsToken"; + SyntaxKind[SyntaxKind["GreaterThanGreaterThanGreaterThanEqualsToken"] = 71] = "GreaterThanGreaterThanGreaterThanEqualsToken"; + SyntaxKind[SyntaxKind["AmpersandEqualsToken"] = 72] = "AmpersandEqualsToken"; + SyntaxKind[SyntaxKind["BarEqualsToken"] = 73] = "BarEqualsToken"; + SyntaxKind[SyntaxKind["CaretEqualsToken"] = 74] = "CaretEqualsToken"; + // Identifiers and PrivateIdentifiers + SyntaxKind[SyntaxKind["Identifier"] = 75] = "Identifier"; + SyntaxKind[SyntaxKind["PrivateIdentifier"] = 76] = "PrivateIdentifier"; + // Reserved words + SyntaxKind[SyntaxKind["BreakKeyword"] = 77] = "BreakKeyword"; + SyntaxKind[SyntaxKind["CaseKeyword"] = 78] = "CaseKeyword"; + SyntaxKind[SyntaxKind["CatchKeyword"] = 79] = "CatchKeyword"; + SyntaxKind[SyntaxKind["ClassKeyword"] = 80] = "ClassKeyword"; + SyntaxKind[SyntaxKind["ConstKeyword"] = 81] = "ConstKeyword"; + SyntaxKind[SyntaxKind["ContinueKeyword"] = 82] = "ContinueKeyword"; + SyntaxKind[SyntaxKind["DebuggerKeyword"] = 83] = "DebuggerKeyword"; + SyntaxKind[SyntaxKind["DefaultKeyword"] = 84] = "DefaultKeyword"; + SyntaxKind[SyntaxKind["DeleteKeyword"] = 85] = "DeleteKeyword"; + SyntaxKind[SyntaxKind["DoKeyword"] = 86] = "DoKeyword"; + SyntaxKind[SyntaxKind["ElseKeyword"] = 87] = "ElseKeyword"; + SyntaxKind[SyntaxKind["EnumKeyword"] = 88] = "EnumKeyword"; + SyntaxKind[SyntaxKind["ExportKeyword"] = 89] = "ExportKeyword"; + SyntaxKind[SyntaxKind["ExtendsKeyword"] = 90] = "ExtendsKeyword"; + SyntaxKind[SyntaxKind["FalseKeyword"] = 91] = "FalseKeyword"; + SyntaxKind[SyntaxKind["FinallyKeyword"] = 92] = "FinallyKeyword"; + SyntaxKind[SyntaxKind["ForKeyword"] = 93] = "ForKeyword"; + SyntaxKind[SyntaxKind["FunctionKeyword"] = 94] = "FunctionKeyword"; + SyntaxKind[SyntaxKind["IfKeyword"] = 95] = "IfKeyword"; + SyntaxKind[SyntaxKind["ImportKeyword"] = 96] = "ImportKeyword"; + SyntaxKind[SyntaxKind["InKeyword"] = 97] = "InKeyword"; + SyntaxKind[SyntaxKind["InstanceOfKeyword"] = 98] = "InstanceOfKeyword"; + SyntaxKind[SyntaxKind["NewKeyword"] = 99] = "NewKeyword"; + SyntaxKind[SyntaxKind["NullKeyword"] = 100] = "NullKeyword"; + SyntaxKind[SyntaxKind["ReturnKeyword"] = 101] = "ReturnKeyword"; + SyntaxKind[SyntaxKind["SuperKeyword"] = 102] = "SuperKeyword"; + SyntaxKind[SyntaxKind["SwitchKeyword"] = 103] = "SwitchKeyword"; + SyntaxKind[SyntaxKind["ThisKeyword"] = 104] = "ThisKeyword"; + SyntaxKind[SyntaxKind["ThrowKeyword"] = 105] = "ThrowKeyword"; + SyntaxKind[SyntaxKind["TrueKeyword"] = 106] = "TrueKeyword"; + SyntaxKind[SyntaxKind["TryKeyword"] = 107] = "TryKeyword"; + SyntaxKind[SyntaxKind["TypeOfKeyword"] = 108] = "TypeOfKeyword"; + SyntaxKind[SyntaxKind["VarKeyword"] = 109] = "VarKeyword"; + SyntaxKind[SyntaxKind["VoidKeyword"] = 110] = "VoidKeyword"; + SyntaxKind[SyntaxKind["WhileKeyword"] = 111] = "WhileKeyword"; + SyntaxKind[SyntaxKind["WithKeyword"] = 112] = "WithKeyword"; + // Strict mode reserved words + SyntaxKind[SyntaxKind["ImplementsKeyword"] = 113] = "ImplementsKeyword"; + SyntaxKind[SyntaxKind["InterfaceKeyword"] = 114] = "InterfaceKeyword"; + SyntaxKind[SyntaxKind["LetKeyword"] = 115] = "LetKeyword"; + SyntaxKind[SyntaxKind["PackageKeyword"] = 116] = "PackageKeyword"; + SyntaxKind[SyntaxKind["PrivateKeyword"] = 117] = "PrivateKeyword"; + SyntaxKind[SyntaxKind["ProtectedKeyword"] = 118] = "ProtectedKeyword"; + SyntaxKind[SyntaxKind["PublicKeyword"] = 119] = "PublicKeyword"; + SyntaxKind[SyntaxKind["StaticKeyword"] = 120] = "StaticKeyword"; + SyntaxKind[SyntaxKind["YieldKeyword"] = 121] = "YieldKeyword"; + // Contextual keywords + SyntaxKind[SyntaxKind["AbstractKeyword"] = 122] = "AbstractKeyword"; + SyntaxKind[SyntaxKind["AsKeyword"] = 123] = "AsKeyword"; + SyntaxKind[SyntaxKind["AssertsKeyword"] = 124] = "AssertsKeyword"; + SyntaxKind[SyntaxKind["AnyKeyword"] = 125] = "AnyKeyword"; + SyntaxKind[SyntaxKind["AsyncKeyword"] = 126] = "AsyncKeyword"; + SyntaxKind[SyntaxKind["AwaitKeyword"] = 127] = "AwaitKeyword"; + SyntaxKind[SyntaxKind["BooleanKeyword"] = 128] = "BooleanKeyword"; + SyntaxKind[SyntaxKind["ConstructorKeyword"] = 129] = "ConstructorKeyword"; + SyntaxKind[SyntaxKind["DeclareKeyword"] = 130] = "DeclareKeyword"; + SyntaxKind[SyntaxKind["GetKeyword"] = 131] = "GetKeyword"; + SyntaxKind[SyntaxKind["InferKeyword"] = 132] = "InferKeyword"; + SyntaxKind[SyntaxKind["IsKeyword"] = 133] = "IsKeyword"; + SyntaxKind[SyntaxKind["KeyOfKeyword"] = 134] = "KeyOfKeyword"; + SyntaxKind[SyntaxKind["ModuleKeyword"] = 135] = "ModuleKeyword"; + SyntaxKind[SyntaxKind["NamespaceKeyword"] = 136] = "NamespaceKeyword"; + SyntaxKind[SyntaxKind["NeverKeyword"] = 137] = "NeverKeyword"; + SyntaxKind[SyntaxKind["ReadonlyKeyword"] = 138] = "ReadonlyKeyword"; + SyntaxKind[SyntaxKind["RequireKeyword"] = 139] = "RequireKeyword"; + SyntaxKind[SyntaxKind["NumberKeyword"] = 140] = "NumberKeyword"; + SyntaxKind[SyntaxKind["ObjectKeyword"] = 141] = "ObjectKeyword"; + SyntaxKind[SyntaxKind["SetKeyword"] = 142] = "SetKeyword"; + SyntaxKind[SyntaxKind["StringKeyword"] = 143] = "StringKeyword"; + SyntaxKind[SyntaxKind["SymbolKeyword"] = 144] = "SymbolKeyword"; + SyntaxKind[SyntaxKind["TypeKeyword"] = 145] = "TypeKeyword"; + SyntaxKind[SyntaxKind["UndefinedKeyword"] = 146] = "UndefinedKeyword"; + SyntaxKind[SyntaxKind["UniqueKeyword"] = 147] = "UniqueKeyword"; + SyntaxKind[SyntaxKind["UnknownKeyword"] = 148] = "UnknownKeyword"; + SyntaxKind[SyntaxKind["FromKeyword"] = 149] = "FromKeyword"; + SyntaxKind[SyntaxKind["GlobalKeyword"] = 150] = "GlobalKeyword"; + SyntaxKind[SyntaxKind["BigIntKeyword"] = 151] = "BigIntKeyword"; + SyntaxKind[SyntaxKind["OfKeyword"] = 152] = "OfKeyword"; + // Parse tree nodes + // Names + SyntaxKind[SyntaxKind["QualifiedName"] = 153] = "QualifiedName"; + SyntaxKind[SyntaxKind["ComputedPropertyName"] = 154] = "ComputedPropertyName"; + // Signature elements + SyntaxKind[SyntaxKind["TypeParameter"] = 155] = "TypeParameter"; + SyntaxKind[SyntaxKind["Parameter"] = 156] = "Parameter"; + SyntaxKind[SyntaxKind["Decorator"] = 157] = "Decorator"; + // TypeMember + SyntaxKind[SyntaxKind["PropertySignature"] = 158] = "PropertySignature"; + SyntaxKind[SyntaxKind["PropertyDeclaration"] = 159] = "PropertyDeclaration"; + SyntaxKind[SyntaxKind["MethodSignature"] = 160] = "MethodSignature"; + SyntaxKind[SyntaxKind["MethodDeclaration"] = 161] = "MethodDeclaration"; + SyntaxKind[SyntaxKind["Constructor"] = 162] = "Constructor"; + SyntaxKind[SyntaxKind["GetAccessor"] = 163] = "GetAccessor"; + SyntaxKind[SyntaxKind["SetAccessor"] = 164] = "SetAccessor"; + SyntaxKind[SyntaxKind["CallSignature"] = 165] = "CallSignature"; + SyntaxKind[SyntaxKind["ConstructSignature"] = 166] = "ConstructSignature"; + SyntaxKind[SyntaxKind["IndexSignature"] = 167] = "IndexSignature"; + // Type + SyntaxKind[SyntaxKind["TypePredicate"] = 168] = "TypePredicate"; + SyntaxKind[SyntaxKind["TypeReference"] = 169] = "TypeReference"; + SyntaxKind[SyntaxKind["FunctionType"] = 170] = "FunctionType"; + SyntaxKind[SyntaxKind["ConstructorType"] = 171] = "ConstructorType"; + SyntaxKind[SyntaxKind["TypeQuery"] = 172] = "TypeQuery"; + SyntaxKind[SyntaxKind["TypeLiteral"] = 173] = "TypeLiteral"; + SyntaxKind[SyntaxKind["ArrayType"] = 174] = "ArrayType"; + SyntaxKind[SyntaxKind["TupleType"] = 175] = "TupleType"; + SyntaxKind[SyntaxKind["OptionalType"] = 176] = "OptionalType"; + SyntaxKind[SyntaxKind["RestType"] = 177] = "RestType"; + SyntaxKind[SyntaxKind["UnionType"] = 178] = "UnionType"; + SyntaxKind[SyntaxKind["IntersectionType"] = 179] = "IntersectionType"; + SyntaxKind[SyntaxKind["ConditionalType"] = 180] = "ConditionalType"; + SyntaxKind[SyntaxKind["InferType"] = 181] = "InferType"; + SyntaxKind[SyntaxKind["ParenthesizedType"] = 182] = "ParenthesizedType"; + SyntaxKind[SyntaxKind["ThisType"] = 183] = "ThisType"; + SyntaxKind[SyntaxKind["TypeOperator"] = 184] = "TypeOperator"; + SyntaxKind[SyntaxKind["IndexedAccessType"] = 185] = "IndexedAccessType"; + SyntaxKind[SyntaxKind["MappedType"] = 186] = "MappedType"; + SyntaxKind[SyntaxKind["LiteralType"] = 187] = "LiteralType"; + SyntaxKind[SyntaxKind["ImportType"] = 188] = "ImportType"; + // Binding patterns + SyntaxKind[SyntaxKind["ObjectBindingPattern"] = 189] = "ObjectBindingPattern"; + SyntaxKind[SyntaxKind["ArrayBindingPattern"] = 190] = "ArrayBindingPattern"; + SyntaxKind[SyntaxKind["BindingElement"] = 191] = "BindingElement"; + // Expression + SyntaxKind[SyntaxKind["ArrayLiteralExpression"] = 192] = "ArrayLiteralExpression"; + SyntaxKind[SyntaxKind["ObjectLiteralExpression"] = 193] = "ObjectLiteralExpression"; + SyntaxKind[SyntaxKind["PropertyAccessExpression"] = 194] = "PropertyAccessExpression"; + SyntaxKind[SyntaxKind["ElementAccessExpression"] = 195] = "ElementAccessExpression"; + SyntaxKind[SyntaxKind["CallExpression"] = 196] = "CallExpression"; + SyntaxKind[SyntaxKind["NewExpression"] = 197] = "NewExpression"; + SyntaxKind[SyntaxKind["TaggedTemplateExpression"] = 198] = "TaggedTemplateExpression"; + SyntaxKind[SyntaxKind["TypeAssertionExpression"] = 199] = "TypeAssertionExpression"; + SyntaxKind[SyntaxKind["ParenthesizedExpression"] = 200] = "ParenthesizedExpression"; + SyntaxKind[SyntaxKind["FunctionExpression"] = 201] = "FunctionExpression"; + SyntaxKind[SyntaxKind["ArrowFunction"] = 202] = "ArrowFunction"; + SyntaxKind[SyntaxKind["DeleteExpression"] = 203] = "DeleteExpression"; + SyntaxKind[SyntaxKind["TypeOfExpression"] = 204] = "TypeOfExpression"; + SyntaxKind[SyntaxKind["VoidExpression"] = 205] = "VoidExpression"; + SyntaxKind[SyntaxKind["AwaitExpression"] = 206] = "AwaitExpression"; + SyntaxKind[SyntaxKind["PrefixUnaryExpression"] = 207] = "PrefixUnaryExpression"; + SyntaxKind[SyntaxKind["PostfixUnaryExpression"] = 208] = "PostfixUnaryExpression"; + SyntaxKind[SyntaxKind["BinaryExpression"] = 209] = "BinaryExpression"; + SyntaxKind[SyntaxKind["ConditionalExpression"] = 210] = "ConditionalExpression"; + SyntaxKind[SyntaxKind["TemplateExpression"] = 211] = "TemplateExpression"; + SyntaxKind[SyntaxKind["YieldExpression"] = 212] = "YieldExpression"; + SyntaxKind[SyntaxKind["SpreadElement"] = 213] = "SpreadElement"; + SyntaxKind[SyntaxKind["ClassExpression"] = 214] = "ClassExpression"; + SyntaxKind[SyntaxKind["OmittedExpression"] = 215] = "OmittedExpression"; + SyntaxKind[SyntaxKind["ExpressionWithTypeArguments"] = 216] = "ExpressionWithTypeArguments"; + SyntaxKind[SyntaxKind["AsExpression"] = 217] = "AsExpression"; + SyntaxKind[SyntaxKind["NonNullExpression"] = 218] = "NonNullExpression"; + SyntaxKind[SyntaxKind["MetaProperty"] = 219] = "MetaProperty"; + SyntaxKind[SyntaxKind["SyntheticExpression"] = 220] = "SyntheticExpression"; + // Misc + SyntaxKind[SyntaxKind["TemplateSpan"] = 221] = "TemplateSpan"; + SyntaxKind[SyntaxKind["SemicolonClassElement"] = 222] = "SemicolonClassElement"; + // Element + SyntaxKind[SyntaxKind["Block"] = 223] = "Block"; + SyntaxKind[SyntaxKind["EmptyStatement"] = 224] = "EmptyStatement"; + SyntaxKind[SyntaxKind["VariableStatement"] = 225] = "VariableStatement"; + SyntaxKind[SyntaxKind["ExpressionStatement"] = 226] = "ExpressionStatement"; + SyntaxKind[SyntaxKind["IfStatement"] = 227] = "IfStatement"; + SyntaxKind[SyntaxKind["DoStatement"] = 228] = "DoStatement"; + SyntaxKind[SyntaxKind["WhileStatement"] = 229] = "WhileStatement"; + SyntaxKind[SyntaxKind["ForStatement"] = 230] = "ForStatement"; + SyntaxKind[SyntaxKind["ForInStatement"] = 231] = "ForInStatement"; + SyntaxKind[SyntaxKind["ForOfStatement"] = 232] = "ForOfStatement"; + SyntaxKind[SyntaxKind["ContinueStatement"] = 233] = "ContinueStatement"; + SyntaxKind[SyntaxKind["BreakStatement"] = 234] = "BreakStatement"; + SyntaxKind[SyntaxKind["ReturnStatement"] = 235] = "ReturnStatement"; + SyntaxKind[SyntaxKind["WithStatement"] = 236] = "WithStatement"; + SyntaxKind[SyntaxKind["SwitchStatement"] = 237] = "SwitchStatement"; + SyntaxKind[SyntaxKind["LabeledStatement"] = 238] = "LabeledStatement"; + SyntaxKind[SyntaxKind["ThrowStatement"] = 239] = "ThrowStatement"; + SyntaxKind[SyntaxKind["TryStatement"] = 240] = "TryStatement"; + SyntaxKind[SyntaxKind["DebuggerStatement"] = 241] = "DebuggerStatement"; + SyntaxKind[SyntaxKind["VariableDeclaration"] = 242] = "VariableDeclaration"; + SyntaxKind[SyntaxKind["VariableDeclarationList"] = 243] = "VariableDeclarationList"; + SyntaxKind[SyntaxKind["FunctionDeclaration"] = 244] = "FunctionDeclaration"; + SyntaxKind[SyntaxKind["ClassDeclaration"] = 245] = "ClassDeclaration"; + SyntaxKind[SyntaxKind["InterfaceDeclaration"] = 246] = "InterfaceDeclaration"; + SyntaxKind[SyntaxKind["TypeAliasDeclaration"] = 247] = "TypeAliasDeclaration"; + SyntaxKind[SyntaxKind["EnumDeclaration"] = 248] = "EnumDeclaration"; + SyntaxKind[SyntaxKind["ModuleDeclaration"] = 249] = "ModuleDeclaration"; + SyntaxKind[SyntaxKind["ModuleBlock"] = 250] = "ModuleBlock"; + SyntaxKind[SyntaxKind["CaseBlock"] = 251] = "CaseBlock"; + SyntaxKind[SyntaxKind["NamespaceExportDeclaration"] = 252] = "NamespaceExportDeclaration"; + SyntaxKind[SyntaxKind["ImportEqualsDeclaration"] = 253] = "ImportEqualsDeclaration"; + SyntaxKind[SyntaxKind["ImportDeclaration"] = 254] = "ImportDeclaration"; + SyntaxKind[SyntaxKind["ImportClause"] = 255] = "ImportClause"; + SyntaxKind[SyntaxKind["NamespaceImport"] = 256] = "NamespaceImport"; + SyntaxKind[SyntaxKind["NamedImports"] = 257] = "NamedImports"; + SyntaxKind[SyntaxKind["ImportSpecifier"] = 258] = "ImportSpecifier"; + SyntaxKind[SyntaxKind["ExportAssignment"] = 259] = "ExportAssignment"; + SyntaxKind[SyntaxKind["ExportDeclaration"] = 260] = "ExportDeclaration"; + SyntaxKind[SyntaxKind["NamedExports"] = 261] = "NamedExports"; + SyntaxKind[SyntaxKind["NamespaceExport"] = 262] = "NamespaceExport"; + SyntaxKind[SyntaxKind["ExportSpecifier"] = 263] = "ExportSpecifier"; + SyntaxKind[SyntaxKind["MissingDeclaration"] = 264] = "MissingDeclaration"; + // Module references + SyntaxKind[SyntaxKind["ExternalModuleReference"] = 265] = "ExternalModuleReference"; + // JSX + SyntaxKind[SyntaxKind["JsxElement"] = 266] = "JsxElement"; + SyntaxKind[SyntaxKind["JsxSelfClosingElement"] = 267] = "JsxSelfClosingElement"; + SyntaxKind[SyntaxKind["JsxOpeningElement"] = 268] = "JsxOpeningElement"; + SyntaxKind[SyntaxKind["JsxClosingElement"] = 269] = "JsxClosingElement"; + SyntaxKind[SyntaxKind["JsxFragment"] = 270] = "JsxFragment"; + SyntaxKind[SyntaxKind["JsxOpeningFragment"] = 271] = "JsxOpeningFragment"; + SyntaxKind[SyntaxKind["JsxClosingFragment"] = 272] = "JsxClosingFragment"; + SyntaxKind[SyntaxKind["JsxAttribute"] = 273] = "JsxAttribute"; + SyntaxKind[SyntaxKind["JsxAttributes"] = 274] = "JsxAttributes"; + SyntaxKind[SyntaxKind["JsxSpreadAttribute"] = 275] = "JsxSpreadAttribute"; + SyntaxKind[SyntaxKind["JsxExpression"] = 276] = "JsxExpression"; + // Clauses + SyntaxKind[SyntaxKind["CaseClause"] = 277] = "CaseClause"; + SyntaxKind[SyntaxKind["DefaultClause"] = 278] = "DefaultClause"; + SyntaxKind[SyntaxKind["HeritageClause"] = 279] = "HeritageClause"; + SyntaxKind[SyntaxKind["CatchClause"] = 280] = "CatchClause"; + // Property assignments + SyntaxKind[SyntaxKind["PropertyAssignment"] = 281] = "PropertyAssignment"; + SyntaxKind[SyntaxKind["ShorthandPropertyAssignment"] = 282] = "ShorthandPropertyAssignment"; + SyntaxKind[SyntaxKind["SpreadAssignment"] = 283] = "SpreadAssignment"; + // Enum + SyntaxKind[SyntaxKind["EnumMember"] = 284] = "EnumMember"; + // Unparsed + SyntaxKind[SyntaxKind["UnparsedPrologue"] = 285] = "UnparsedPrologue"; + SyntaxKind[SyntaxKind["UnparsedPrepend"] = 286] = "UnparsedPrepend"; + SyntaxKind[SyntaxKind["UnparsedText"] = 287] = "UnparsedText"; + SyntaxKind[SyntaxKind["UnparsedInternalText"] = 288] = "UnparsedInternalText"; + SyntaxKind[SyntaxKind["UnparsedSyntheticReference"] = 289] = "UnparsedSyntheticReference"; + // Top-level nodes + SyntaxKind[SyntaxKind["SourceFile"] = 290] = "SourceFile"; + SyntaxKind[SyntaxKind["Bundle"] = 291] = "Bundle"; + SyntaxKind[SyntaxKind["UnparsedSource"] = 292] = "UnparsedSource"; + SyntaxKind[SyntaxKind["InputFiles"] = 293] = "InputFiles"; + // JSDoc nodes + SyntaxKind[SyntaxKind["JSDocTypeExpression"] = 294] = "JSDocTypeExpression"; + // The * type + SyntaxKind[SyntaxKind["JSDocAllType"] = 295] = "JSDocAllType"; + // The ? type + SyntaxKind[SyntaxKind["JSDocUnknownType"] = 296] = "JSDocUnknownType"; + SyntaxKind[SyntaxKind["JSDocNullableType"] = 297] = "JSDocNullableType"; + SyntaxKind[SyntaxKind["JSDocNonNullableType"] = 298] = "JSDocNonNullableType"; + SyntaxKind[SyntaxKind["JSDocOptionalType"] = 299] = "JSDocOptionalType"; + SyntaxKind[SyntaxKind["JSDocFunctionType"] = 300] = "JSDocFunctionType"; + SyntaxKind[SyntaxKind["JSDocVariadicType"] = 301] = "JSDocVariadicType"; + // https://jsdoc.app/about-namepaths.html + SyntaxKind[SyntaxKind["JSDocNamepathType"] = 302] = "JSDocNamepathType"; + SyntaxKind[SyntaxKind["JSDocComment"] = 303] = "JSDocComment"; + SyntaxKind[SyntaxKind["JSDocTypeLiteral"] = 304] = "JSDocTypeLiteral"; + SyntaxKind[SyntaxKind["JSDocSignature"] = 305] = "JSDocSignature"; + SyntaxKind[SyntaxKind["JSDocTag"] = 306] = "JSDocTag"; + SyntaxKind[SyntaxKind["JSDocAugmentsTag"] = 307] = "JSDocAugmentsTag"; + SyntaxKind[SyntaxKind["JSDocImplementsTag"] = 308] = "JSDocImplementsTag"; + SyntaxKind[SyntaxKind["JSDocAuthorTag"] = 309] = "JSDocAuthorTag"; + SyntaxKind[SyntaxKind["JSDocClassTag"] = 310] = "JSDocClassTag"; + SyntaxKind[SyntaxKind["JSDocPublicTag"] = 311] = "JSDocPublicTag"; + SyntaxKind[SyntaxKind["JSDocPrivateTag"] = 312] = "JSDocPrivateTag"; + SyntaxKind[SyntaxKind["JSDocProtectedTag"] = 313] = "JSDocProtectedTag"; + SyntaxKind[SyntaxKind["JSDocReadonlyTag"] = 314] = "JSDocReadonlyTag"; + SyntaxKind[SyntaxKind["JSDocCallbackTag"] = 315] = "JSDocCallbackTag"; + SyntaxKind[SyntaxKind["JSDocEnumTag"] = 316] = "JSDocEnumTag"; + SyntaxKind[SyntaxKind["JSDocParameterTag"] = 317] = "JSDocParameterTag"; + SyntaxKind[SyntaxKind["JSDocReturnTag"] = 318] = "JSDocReturnTag"; + SyntaxKind[SyntaxKind["JSDocThisTag"] = 319] = "JSDocThisTag"; + SyntaxKind[SyntaxKind["JSDocTypeTag"] = 320] = "JSDocTypeTag"; + SyntaxKind[SyntaxKind["JSDocTemplateTag"] = 321] = "JSDocTemplateTag"; + SyntaxKind[SyntaxKind["JSDocTypedefTag"] = 322] = "JSDocTypedefTag"; + SyntaxKind[SyntaxKind["JSDocPropertyTag"] = 323] = "JSDocPropertyTag"; + // Synthesized list + SyntaxKind[SyntaxKind["SyntaxList"] = 324] = "SyntaxList"; + // Transformation nodes + SyntaxKind[SyntaxKind["NotEmittedStatement"] = 325] = "NotEmittedStatement"; + SyntaxKind[SyntaxKind["PartiallyEmittedExpression"] = 326] = "PartiallyEmittedExpression"; + SyntaxKind[SyntaxKind["CommaListExpression"] = 327] = "CommaListExpression"; + SyntaxKind[SyntaxKind["MergeDeclarationMarker"] = 328] = "MergeDeclarationMarker"; + SyntaxKind[SyntaxKind["EndOfDeclarationMarker"] = 329] = "EndOfDeclarationMarker"; + SyntaxKind[SyntaxKind["SyntheticReferenceExpression"] = 330] = "SyntheticReferenceExpression"; + // Enum value count + SyntaxKind[SyntaxKind["Count"] = 331] = "Count"; + // Markers + SyntaxKind[SyntaxKind["FirstAssignment"] = 62] = "FirstAssignment"; + SyntaxKind[SyntaxKind["LastAssignment"] = 74] = "LastAssignment"; + SyntaxKind[SyntaxKind["FirstCompoundAssignment"] = 63] = "FirstCompoundAssignment"; + SyntaxKind[SyntaxKind["LastCompoundAssignment"] = 74] = "LastCompoundAssignment"; + SyntaxKind[SyntaxKind["FirstReservedWord"] = 77] = "FirstReservedWord"; + SyntaxKind[SyntaxKind["LastReservedWord"] = 112] = "LastReservedWord"; + SyntaxKind[SyntaxKind["FirstKeyword"] = 77] = "FirstKeyword"; + SyntaxKind[SyntaxKind["LastKeyword"] = 152] = "LastKeyword"; + SyntaxKind[SyntaxKind["FirstFutureReservedWord"] = 113] = "FirstFutureReservedWord"; + SyntaxKind[SyntaxKind["LastFutureReservedWord"] = 121] = "LastFutureReservedWord"; + SyntaxKind[SyntaxKind["FirstTypeNode"] = 168] = "FirstTypeNode"; + SyntaxKind[SyntaxKind["LastTypeNode"] = 188] = "LastTypeNode"; + SyntaxKind[SyntaxKind["FirstPunctuation"] = 18] = "FirstPunctuation"; + SyntaxKind[SyntaxKind["LastPunctuation"] = 74] = "LastPunctuation"; + SyntaxKind[SyntaxKind["FirstToken"] = 0] = "FirstToken"; + SyntaxKind[SyntaxKind["LastToken"] = 152] = "LastToken"; + SyntaxKind[SyntaxKind["FirstTriviaToken"] = 2] = "FirstTriviaToken"; + SyntaxKind[SyntaxKind["LastTriviaToken"] = 7] = "LastTriviaToken"; + SyntaxKind[SyntaxKind["FirstLiteralToken"] = 8] = "FirstLiteralToken"; + SyntaxKind[SyntaxKind["LastLiteralToken"] = 14] = "LastLiteralToken"; + SyntaxKind[SyntaxKind["FirstTemplateToken"] = 14] = "FirstTemplateToken"; + SyntaxKind[SyntaxKind["LastTemplateToken"] = 17] = "LastTemplateToken"; + SyntaxKind[SyntaxKind["FirstBinaryOperator"] = 29] = "FirstBinaryOperator"; + SyntaxKind[SyntaxKind["LastBinaryOperator"] = 74] = "LastBinaryOperator"; + SyntaxKind[SyntaxKind["FirstStatement"] = 225] = "FirstStatement"; + SyntaxKind[SyntaxKind["LastStatement"] = 241] = "LastStatement"; + SyntaxKind[SyntaxKind["FirstNode"] = 153] = "FirstNode"; + SyntaxKind[SyntaxKind["FirstJSDocNode"] = 294] = "FirstJSDocNode"; + SyntaxKind[SyntaxKind["LastJSDocNode"] = 323] = "LastJSDocNode"; + SyntaxKind[SyntaxKind["FirstJSDocTagNode"] = 306] = "FirstJSDocTagNode"; + SyntaxKind[SyntaxKind["LastJSDocTagNode"] = 323] = "LastJSDocTagNode"; + /* @internal */ SyntaxKind[SyntaxKind["FirstContextualKeyword"] = 122] = "FirstContextualKeyword"; + /* @internal */ SyntaxKind[SyntaxKind["LastContextualKeyword"] = 152] = "LastContextualKeyword"; + })(SyntaxKind = ts.SyntaxKind || (ts.SyntaxKind = {})); + var NodeFlags; + (function (NodeFlags) { + NodeFlags[NodeFlags["None"] = 0] = "None"; + NodeFlags[NodeFlags["Let"] = 1] = "Let"; + NodeFlags[NodeFlags["Const"] = 2] = "Const"; + NodeFlags[NodeFlags["NestedNamespace"] = 4] = "NestedNamespace"; + NodeFlags[NodeFlags["Synthesized"] = 8] = "Synthesized"; + NodeFlags[NodeFlags["Namespace"] = 16] = "Namespace"; + NodeFlags[NodeFlags["OptionalChain"] = 32] = "OptionalChain"; + NodeFlags[NodeFlags["ExportContext"] = 64] = "ExportContext"; + NodeFlags[NodeFlags["ContainsThis"] = 128] = "ContainsThis"; + NodeFlags[NodeFlags["HasImplicitReturn"] = 256] = "HasImplicitReturn"; + NodeFlags[NodeFlags["HasExplicitReturn"] = 512] = "HasExplicitReturn"; + NodeFlags[NodeFlags["GlobalAugmentation"] = 1024] = "GlobalAugmentation"; + NodeFlags[NodeFlags["HasAsyncFunctions"] = 2048] = "HasAsyncFunctions"; + NodeFlags[NodeFlags["DisallowInContext"] = 4096] = "DisallowInContext"; + NodeFlags[NodeFlags["YieldContext"] = 8192] = "YieldContext"; + NodeFlags[NodeFlags["DecoratorContext"] = 16384] = "DecoratorContext"; + NodeFlags[NodeFlags["AwaitContext"] = 32768] = "AwaitContext"; + NodeFlags[NodeFlags["ThisNodeHasError"] = 65536] = "ThisNodeHasError"; + NodeFlags[NodeFlags["JavaScriptFile"] = 131072] = "JavaScriptFile"; + NodeFlags[NodeFlags["ThisNodeOrAnySubNodesHasError"] = 262144] = "ThisNodeOrAnySubNodesHasError"; + NodeFlags[NodeFlags["HasAggregatedChildData"] = 524288] = "HasAggregatedChildData"; + // These flags will be set when the parser encounters a dynamic import expression or 'import.meta' to avoid + // walking the tree if the flags are not set. However, these flags are just a approximation + // (hence why it's named "PossiblyContainsDynamicImport") because once set, the flags never get cleared. + // During editing, if a dynamic import is removed, incremental parsing will *NOT* clear this flag. + // This means that the tree will always be traversed during module resolution, or when looking for external module indicators. + // However, the removal operation should not occur often and in the case of the + // removal, it is likely that users will add the import anyway. + // The advantage of this approach is its simplicity. For the case of batch compilation, + // we guarantee that users won't have to pay the price of walking the tree if a dynamic import isn't used. + /* @internal */ NodeFlags[NodeFlags["PossiblyContainsDynamicImport"] = 1048576] = "PossiblyContainsDynamicImport"; + /* @internal */ NodeFlags[NodeFlags["PossiblyContainsImportMeta"] = 2097152] = "PossiblyContainsImportMeta"; + NodeFlags[NodeFlags["JSDoc"] = 4194304] = "JSDoc"; + /* @internal */ NodeFlags[NodeFlags["Ambient"] = 8388608] = "Ambient"; + /* @internal */ NodeFlags[NodeFlags["InWithStatement"] = 16777216] = "InWithStatement"; + NodeFlags[NodeFlags["JsonFile"] = 33554432] = "JsonFile"; + /* @internal */ NodeFlags[NodeFlags["TypeCached"] = 67108864] = "TypeCached"; + NodeFlags[NodeFlags["BlockScoped"] = 3] = "BlockScoped"; + NodeFlags[NodeFlags["ReachabilityCheckFlags"] = 768] = "ReachabilityCheckFlags"; + NodeFlags[NodeFlags["ReachabilityAndEmitFlags"] = 2816] = "ReachabilityAndEmitFlags"; + // Parsing context flags + NodeFlags[NodeFlags["ContextFlags"] = 25358336] = "ContextFlags"; + // Exclude these flags when parsing a Type + NodeFlags[NodeFlags["TypeExcludesFlags"] = 40960] = "TypeExcludesFlags"; + // Represents all flags that are potentially set once and + // never cleared on SourceFiles which get re-used in between incremental parses. + // See the comment above on `PossiblyContainsDynamicImport` and `PossiblyContainsImportMeta`. + /* @internal */ NodeFlags[NodeFlags["PermanentlySetIncrementalFlags"] = 3145728] = "PermanentlySetIncrementalFlags"; + })(NodeFlags = ts.NodeFlags || (ts.NodeFlags = {})); + var ModifierFlags; + (function (ModifierFlags) { + ModifierFlags[ModifierFlags["None"] = 0] = "None"; + ModifierFlags[ModifierFlags["Export"] = 1] = "Export"; + ModifierFlags[ModifierFlags["Ambient"] = 2] = "Ambient"; + ModifierFlags[ModifierFlags["Public"] = 4] = "Public"; + ModifierFlags[ModifierFlags["Private"] = 8] = "Private"; + ModifierFlags[ModifierFlags["Protected"] = 16] = "Protected"; + ModifierFlags[ModifierFlags["Static"] = 32] = "Static"; + ModifierFlags[ModifierFlags["Readonly"] = 64] = "Readonly"; + ModifierFlags[ModifierFlags["Abstract"] = 128] = "Abstract"; + ModifierFlags[ModifierFlags["Async"] = 256] = "Async"; + ModifierFlags[ModifierFlags["Default"] = 512] = "Default"; + ModifierFlags[ModifierFlags["Const"] = 2048] = "Const"; + ModifierFlags[ModifierFlags["HasComputedFlags"] = 536870912] = "HasComputedFlags"; + ModifierFlags[ModifierFlags["AccessibilityModifier"] = 28] = "AccessibilityModifier"; + // Accessibility modifiers and 'readonly' can be attached to a parameter in a constructor to make it a property. + ModifierFlags[ModifierFlags["ParameterPropertyModifier"] = 92] = "ParameterPropertyModifier"; + ModifierFlags[ModifierFlags["NonPublicAccessibilityModifier"] = 24] = "NonPublicAccessibilityModifier"; + ModifierFlags[ModifierFlags["TypeScriptModifier"] = 2270] = "TypeScriptModifier"; + ModifierFlags[ModifierFlags["ExportDefault"] = 513] = "ExportDefault"; + ModifierFlags[ModifierFlags["All"] = 3071] = "All"; + })(ModifierFlags = ts.ModifierFlags || (ts.ModifierFlags = {})); + var JsxFlags; + (function (JsxFlags) { + JsxFlags[JsxFlags["None"] = 0] = "None"; + /** An element from a named property of the JSX.IntrinsicElements interface */ + JsxFlags[JsxFlags["IntrinsicNamedElement"] = 1] = "IntrinsicNamedElement"; + /** An element inferred from the string index signature of the JSX.IntrinsicElements interface */ + JsxFlags[JsxFlags["IntrinsicIndexedElement"] = 2] = "IntrinsicIndexedElement"; + JsxFlags[JsxFlags["IntrinsicElement"] = 3] = "IntrinsicElement"; + })(JsxFlags = ts.JsxFlags || (ts.JsxFlags = {})); + /* @internal */ + var RelationComparisonResult; + (function (RelationComparisonResult) { + RelationComparisonResult[RelationComparisonResult["Succeeded"] = 1] = "Succeeded"; + RelationComparisonResult[RelationComparisonResult["Failed"] = 2] = "Failed"; + RelationComparisonResult[RelationComparisonResult["Reported"] = 4] = "Reported"; + RelationComparisonResult[RelationComparisonResult["ReportsUnmeasurable"] = 8] = "ReportsUnmeasurable"; + RelationComparisonResult[RelationComparisonResult["ReportsUnreliable"] = 16] = "ReportsUnreliable"; + RelationComparisonResult[RelationComparisonResult["ReportsMask"] = 24] = "ReportsMask"; + })(RelationComparisonResult = ts.RelationComparisonResult || (ts.RelationComparisonResult = {})); + /*@internal*/ + var GeneratedIdentifierFlags; + (function (GeneratedIdentifierFlags) { + // Kinds + GeneratedIdentifierFlags[GeneratedIdentifierFlags["None"] = 0] = "None"; + GeneratedIdentifierFlags[GeneratedIdentifierFlags["Auto"] = 1] = "Auto"; + GeneratedIdentifierFlags[GeneratedIdentifierFlags["Loop"] = 2] = "Loop"; + GeneratedIdentifierFlags[GeneratedIdentifierFlags["Unique"] = 3] = "Unique"; + GeneratedIdentifierFlags[GeneratedIdentifierFlags["Node"] = 4] = "Node"; + GeneratedIdentifierFlags[GeneratedIdentifierFlags["KindMask"] = 7] = "KindMask"; + // Flags + GeneratedIdentifierFlags[GeneratedIdentifierFlags["ReservedInNestedScopes"] = 8] = "ReservedInNestedScopes"; + GeneratedIdentifierFlags[GeneratedIdentifierFlags["Optimistic"] = 16] = "Optimistic"; + GeneratedIdentifierFlags[GeneratedIdentifierFlags["FileLevel"] = 32] = "FileLevel"; + })(GeneratedIdentifierFlags = ts.GeneratedIdentifierFlags || (ts.GeneratedIdentifierFlags = {})); + var TokenFlags; + (function (TokenFlags) { + TokenFlags[TokenFlags["None"] = 0] = "None"; + /* @internal */ + TokenFlags[TokenFlags["PrecedingLineBreak"] = 1] = "PrecedingLineBreak"; + /* @internal */ + TokenFlags[TokenFlags["PrecedingJSDocComment"] = 2] = "PrecedingJSDocComment"; + /* @internal */ + TokenFlags[TokenFlags["Unterminated"] = 4] = "Unterminated"; + /* @internal */ + TokenFlags[TokenFlags["ExtendedUnicodeEscape"] = 8] = "ExtendedUnicodeEscape"; + TokenFlags[TokenFlags["Scientific"] = 16] = "Scientific"; + TokenFlags[TokenFlags["Octal"] = 32] = "Octal"; + TokenFlags[TokenFlags["HexSpecifier"] = 64] = "HexSpecifier"; + TokenFlags[TokenFlags["BinarySpecifier"] = 128] = "BinarySpecifier"; + TokenFlags[TokenFlags["OctalSpecifier"] = 256] = "OctalSpecifier"; + /* @internal */ + TokenFlags[TokenFlags["ContainsSeparator"] = 512] = "ContainsSeparator"; + /* @internal */ + TokenFlags[TokenFlags["UnicodeEscape"] = 1024] = "UnicodeEscape"; + /* @internal */ + TokenFlags[TokenFlags["ContainsInvalidEscape"] = 2048] = "ContainsInvalidEscape"; + /* @internal */ + TokenFlags[TokenFlags["BinaryOrOctalSpecifier"] = 384] = "BinaryOrOctalSpecifier"; + /* @internal */ + TokenFlags[TokenFlags["NumericLiteralFlags"] = 1008] = "NumericLiteralFlags"; + })(TokenFlags = ts.TokenFlags || (ts.TokenFlags = {})); + // NOTE: Ensure this is up-to-date with src/debug/debug.ts + var FlowFlags; + (function (FlowFlags) { + FlowFlags[FlowFlags["Unreachable"] = 1] = "Unreachable"; + FlowFlags[FlowFlags["Start"] = 2] = "Start"; + FlowFlags[FlowFlags["BranchLabel"] = 4] = "BranchLabel"; + FlowFlags[FlowFlags["LoopLabel"] = 8] = "LoopLabel"; + FlowFlags[FlowFlags["Assignment"] = 16] = "Assignment"; + FlowFlags[FlowFlags["TrueCondition"] = 32] = "TrueCondition"; + FlowFlags[FlowFlags["FalseCondition"] = 64] = "FalseCondition"; + FlowFlags[FlowFlags["SwitchClause"] = 128] = "SwitchClause"; + FlowFlags[FlowFlags["ArrayMutation"] = 256] = "ArrayMutation"; + FlowFlags[FlowFlags["Call"] = 512] = "Call"; + FlowFlags[FlowFlags["ReduceLabel"] = 1024] = "ReduceLabel"; + FlowFlags[FlowFlags["Referenced"] = 2048] = "Referenced"; + FlowFlags[FlowFlags["Shared"] = 4096] = "Shared"; + FlowFlags[FlowFlags["Label"] = 12] = "Label"; + FlowFlags[FlowFlags["Condition"] = 96] = "Condition"; + })(FlowFlags = ts.FlowFlags || (ts.FlowFlags = {})); + /* @internal */ + var CommentDirectiveType; + (function (CommentDirectiveType) { + CommentDirectiveType[CommentDirectiveType["ExpectError"] = 0] = "ExpectError"; + CommentDirectiveType[CommentDirectiveType["Ignore"] = 1] = "Ignore"; + })(CommentDirectiveType = ts.CommentDirectiveType || (ts.CommentDirectiveType = {})); + var OperationCanceledException = /** @class */ (function () { + function OperationCanceledException() { + } + return OperationCanceledException; + }()); + ts.OperationCanceledException = OperationCanceledException; + /*@internal*/ + var RefFileKind; + (function (RefFileKind) { + RefFileKind[RefFileKind["Import"] = 0] = "Import"; + RefFileKind[RefFileKind["ReferenceFile"] = 1] = "ReferenceFile"; + RefFileKind[RefFileKind["TypeReferenceDirective"] = 2] = "TypeReferenceDirective"; + })(RefFileKind = ts.RefFileKind || (ts.RefFileKind = {})); + /* @internal */ + var StructureIsReused; + (function (StructureIsReused) { + StructureIsReused[StructureIsReused["Not"] = 0] = "Not"; + StructureIsReused[StructureIsReused["SafeModules"] = 1] = "SafeModules"; + StructureIsReused[StructureIsReused["Completely"] = 2] = "Completely"; + })(StructureIsReused = ts.StructureIsReused || (ts.StructureIsReused = {})); + /** Return code used by getEmitOutput function to indicate status of the function */ + var ExitStatus; + (function (ExitStatus) { + // Compiler ran successfully. Either this was a simple do-nothing compilation (for example, + // when -version or -help was provided, or this was a normal compilation, no diagnostics + // were produced, and all outputs were generated successfully. + ExitStatus[ExitStatus["Success"] = 0] = "Success"; + // Diagnostics were produced and because of them no code was generated. + ExitStatus[ExitStatus["DiagnosticsPresent_OutputsSkipped"] = 1] = "DiagnosticsPresent_OutputsSkipped"; + // Diagnostics were produced and outputs were generated in spite of them. + ExitStatus[ExitStatus["DiagnosticsPresent_OutputsGenerated"] = 2] = "DiagnosticsPresent_OutputsGenerated"; + // When build skipped because passed in project is invalid + ExitStatus[ExitStatus["InvalidProject_OutputsSkipped"] = 3] = "InvalidProject_OutputsSkipped"; + // When build is skipped because project references form cycle + ExitStatus[ExitStatus["ProjectReferenceCycle_OutputsSkipped"] = 4] = "ProjectReferenceCycle_OutputsSkipped"; + /** @deprecated Use ProjectReferenceCycle_OutputsSkipped instead. */ + ExitStatus[ExitStatus["ProjectReferenceCycle_OutputsSkupped"] = 4] = "ProjectReferenceCycle_OutputsSkupped"; + })(ExitStatus = ts.ExitStatus || (ts.ExitStatus = {})); + /* @internal */ + var UnionReduction; + (function (UnionReduction) { + UnionReduction[UnionReduction["None"] = 0] = "None"; + UnionReduction[UnionReduction["Literal"] = 1] = "Literal"; + UnionReduction[UnionReduction["Subtype"] = 2] = "Subtype"; + })(UnionReduction = ts.UnionReduction || (ts.UnionReduction = {})); + /* @internal */ + var ContextFlags; + (function (ContextFlags) { + ContextFlags[ContextFlags["None"] = 0] = "None"; + ContextFlags[ContextFlags["Signature"] = 1] = "Signature"; + ContextFlags[ContextFlags["NoConstraints"] = 2] = "NoConstraints"; + ContextFlags[ContextFlags["Completions"] = 4] = "Completions"; + })(ContextFlags = ts.ContextFlags || (ts.ContextFlags = {})); + // NOTE: If modifying this enum, must modify `TypeFormatFlags` too! + var NodeBuilderFlags; + (function (NodeBuilderFlags) { + NodeBuilderFlags[NodeBuilderFlags["None"] = 0] = "None"; + // Options + NodeBuilderFlags[NodeBuilderFlags["NoTruncation"] = 1] = "NoTruncation"; + NodeBuilderFlags[NodeBuilderFlags["WriteArrayAsGenericType"] = 2] = "WriteArrayAsGenericType"; + NodeBuilderFlags[NodeBuilderFlags["GenerateNamesForShadowedTypeParams"] = 4] = "GenerateNamesForShadowedTypeParams"; + NodeBuilderFlags[NodeBuilderFlags["UseStructuralFallback"] = 8] = "UseStructuralFallback"; + NodeBuilderFlags[NodeBuilderFlags["ForbidIndexedAccessSymbolReferences"] = 16] = "ForbidIndexedAccessSymbolReferences"; + NodeBuilderFlags[NodeBuilderFlags["WriteTypeArgumentsOfSignature"] = 32] = "WriteTypeArgumentsOfSignature"; + NodeBuilderFlags[NodeBuilderFlags["UseFullyQualifiedType"] = 64] = "UseFullyQualifiedType"; + NodeBuilderFlags[NodeBuilderFlags["UseOnlyExternalAliasing"] = 128] = "UseOnlyExternalAliasing"; + NodeBuilderFlags[NodeBuilderFlags["SuppressAnyReturnType"] = 256] = "SuppressAnyReturnType"; + NodeBuilderFlags[NodeBuilderFlags["WriteTypeParametersInQualifiedName"] = 512] = "WriteTypeParametersInQualifiedName"; + NodeBuilderFlags[NodeBuilderFlags["MultilineObjectLiterals"] = 1024] = "MultilineObjectLiterals"; + NodeBuilderFlags[NodeBuilderFlags["WriteClassExpressionAsTypeLiteral"] = 2048] = "WriteClassExpressionAsTypeLiteral"; + NodeBuilderFlags[NodeBuilderFlags["UseTypeOfFunction"] = 4096] = "UseTypeOfFunction"; + NodeBuilderFlags[NodeBuilderFlags["OmitParameterModifiers"] = 8192] = "OmitParameterModifiers"; + NodeBuilderFlags[NodeBuilderFlags["UseAliasDefinedOutsideCurrentScope"] = 16384] = "UseAliasDefinedOutsideCurrentScope"; + NodeBuilderFlags[NodeBuilderFlags["UseSingleQuotesForStringLiteralType"] = 268435456] = "UseSingleQuotesForStringLiteralType"; + NodeBuilderFlags[NodeBuilderFlags["NoTypeReduction"] = 536870912] = "NoTypeReduction"; + // Error handling + NodeBuilderFlags[NodeBuilderFlags["AllowThisInObjectLiteral"] = 32768] = "AllowThisInObjectLiteral"; + NodeBuilderFlags[NodeBuilderFlags["AllowQualifedNameInPlaceOfIdentifier"] = 65536] = "AllowQualifedNameInPlaceOfIdentifier"; + NodeBuilderFlags[NodeBuilderFlags["AllowAnonymousIdentifier"] = 131072] = "AllowAnonymousIdentifier"; + NodeBuilderFlags[NodeBuilderFlags["AllowEmptyUnionOrIntersection"] = 262144] = "AllowEmptyUnionOrIntersection"; + NodeBuilderFlags[NodeBuilderFlags["AllowEmptyTuple"] = 524288] = "AllowEmptyTuple"; + NodeBuilderFlags[NodeBuilderFlags["AllowUniqueESSymbolType"] = 1048576] = "AllowUniqueESSymbolType"; + NodeBuilderFlags[NodeBuilderFlags["AllowEmptyIndexInfoType"] = 2097152] = "AllowEmptyIndexInfoType"; + // Errors (cont.) + NodeBuilderFlags[NodeBuilderFlags["AllowNodeModulesRelativePaths"] = 67108864] = "AllowNodeModulesRelativePaths"; + /* @internal */ NodeBuilderFlags[NodeBuilderFlags["DoNotIncludeSymbolChain"] = 134217728] = "DoNotIncludeSymbolChain"; + NodeBuilderFlags[NodeBuilderFlags["IgnoreErrors"] = 70221824] = "IgnoreErrors"; + // State + NodeBuilderFlags[NodeBuilderFlags["InObjectTypeLiteral"] = 4194304] = "InObjectTypeLiteral"; + NodeBuilderFlags[NodeBuilderFlags["InTypeAlias"] = 8388608] = "InTypeAlias"; + NodeBuilderFlags[NodeBuilderFlags["InInitialEntityName"] = 16777216] = "InInitialEntityName"; + NodeBuilderFlags[NodeBuilderFlags["InReverseMappedType"] = 33554432] = "InReverseMappedType"; + })(NodeBuilderFlags = ts.NodeBuilderFlags || (ts.NodeBuilderFlags = {})); + // Ensure the shared flags between this and `NodeBuilderFlags` stay in alignment + var TypeFormatFlags; + (function (TypeFormatFlags) { + TypeFormatFlags[TypeFormatFlags["None"] = 0] = "None"; + TypeFormatFlags[TypeFormatFlags["NoTruncation"] = 1] = "NoTruncation"; + TypeFormatFlags[TypeFormatFlags["WriteArrayAsGenericType"] = 2] = "WriteArrayAsGenericType"; + // hole because there's a hole in node builder flags + TypeFormatFlags[TypeFormatFlags["UseStructuralFallback"] = 8] = "UseStructuralFallback"; + // hole because there's a hole in node builder flags + TypeFormatFlags[TypeFormatFlags["WriteTypeArgumentsOfSignature"] = 32] = "WriteTypeArgumentsOfSignature"; + TypeFormatFlags[TypeFormatFlags["UseFullyQualifiedType"] = 64] = "UseFullyQualifiedType"; + // hole because `UseOnlyExternalAliasing` is here in node builder flags, but functions which take old flags use `SymbolFormatFlags` instead + TypeFormatFlags[TypeFormatFlags["SuppressAnyReturnType"] = 256] = "SuppressAnyReturnType"; + // hole because `WriteTypeParametersInQualifiedName` is here in node builder flags, but functions which take old flags use `SymbolFormatFlags` for this instead + TypeFormatFlags[TypeFormatFlags["MultilineObjectLiterals"] = 1024] = "MultilineObjectLiterals"; + TypeFormatFlags[TypeFormatFlags["WriteClassExpressionAsTypeLiteral"] = 2048] = "WriteClassExpressionAsTypeLiteral"; + TypeFormatFlags[TypeFormatFlags["UseTypeOfFunction"] = 4096] = "UseTypeOfFunction"; + TypeFormatFlags[TypeFormatFlags["OmitParameterModifiers"] = 8192] = "OmitParameterModifiers"; + TypeFormatFlags[TypeFormatFlags["UseAliasDefinedOutsideCurrentScope"] = 16384] = "UseAliasDefinedOutsideCurrentScope"; + TypeFormatFlags[TypeFormatFlags["UseSingleQuotesForStringLiteralType"] = 268435456] = "UseSingleQuotesForStringLiteralType"; + TypeFormatFlags[TypeFormatFlags["NoTypeReduction"] = 536870912] = "NoTypeReduction"; + // Error Handling + TypeFormatFlags[TypeFormatFlags["AllowUniqueESSymbolType"] = 1048576] = "AllowUniqueESSymbolType"; + // TypeFormatFlags exclusive + TypeFormatFlags[TypeFormatFlags["AddUndefined"] = 131072] = "AddUndefined"; + TypeFormatFlags[TypeFormatFlags["WriteArrowStyleSignature"] = 262144] = "WriteArrowStyleSignature"; + // State + TypeFormatFlags[TypeFormatFlags["InArrayType"] = 524288] = "InArrayType"; + TypeFormatFlags[TypeFormatFlags["InElementType"] = 2097152] = "InElementType"; + TypeFormatFlags[TypeFormatFlags["InFirstTypeArgument"] = 4194304] = "InFirstTypeArgument"; + TypeFormatFlags[TypeFormatFlags["InTypeAlias"] = 8388608] = "InTypeAlias"; + /** @deprecated */ TypeFormatFlags[TypeFormatFlags["WriteOwnNameForAnyLike"] = 0] = "WriteOwnNameForAnyLike"; + TypeFormatFlags[TypeFormatFlags["NodeBuilderFlagsMask"] = 814775659] = "NodeBuilderFlagsMask"; + })(TypeFormatFlags = ts.TypeFormatFlags || (ts.TypeFormatFlags = {})); + var SymbolFormatFlags; + (function (SymbolFormatFlags) { + SymbolFormatFlags[SymbolFormatFlags["None"] = 0] = "None"; + // Write symbols's type argument if it is instantiated symbol + // eg. class C { p: T } <-- Show p as C.p here + // var a: C; + // var p = a.p; <--- Here p is property of C so show it as C.p instead of just C.p + SymbolFormatFlags[SymbolFormatFlags["WriteTypeParametersOrArguments"] = 1] = "WriteTypeParametersOrArguments"; + // Use only external alias information to get the symbol name in the given context + // eg. module m { export class c { } } import x = m.c; + // When this flag is specified m.c will be used to refer to the class instead of alias symbol x + SymbolFormatFlags[SymbolFormatFlags["UseOnlyExternalAliasing"] = 2] = "UseOnlyExternalAliasing"; + // Build symbol name using any nodes needed, instead of just components of an entity name + SymbolFormatFlags[SymbolFormatFlags["AllowAnyNodeKind"] = 4] = "AllowAnyNodeKind"; + // Prefer aliases which are not directly visible + SymbolFormatFlags[SymbolFormatFlags["UseAliasDefinedOutsideCurrentScope"] = 8] = "UseAliasDefinedOutsideCurrentScope"; + // Skip building an accessible symbol chain + /* @internal */ SymbolFormatFlags[SymbolFormatFlags["DoNotIncludeSymbolChain"] = 16] = "DoNotIncludeSymbolChain"; + })(SymbolFormatFlags = ts.SymbolFormatFlags || (ts.SymbolFormatFlags = {})); + /* @internal */ + var SymbolAccessibility; + (function (SymbolAccessibility) { + SymbolAccessibility[SymbolAccessibility["Accessible"] = 0] = "Accessible"; + SymbolAccessibility[SymbolAccessibility["NotAccessible"] = 1] = "NotAccessible"; + SymbolAccessibility[SymbolAccessibility["CannotBeNamed"] = 2] = "CannotBeNamed"; + })(SymbolAccessibility = ts.SymbolAccessibility || (ts.SymbolAccessibility = {})); + /* @internal */ + var SyntheticSymbolKind; + (function (SyntheticSymbolKind) { + SyntheticSymbolKind[SyntheticSymbolKind["UnionOrIntersection"] = 0] = "UnionOrIntersection"; + SyntheticSymbolKind[SyntheticSymbolKind["Spread"] = 1] = "Spread"; + })(SyntheticSymbolKind = ts.SyntheticSymbolKind || (ts.SyntheticSymbolKind = {})); + var TypePredicateKind; + (function (TypePredicateKind) { + TypePredicateKind[TypePredicateKind["This"] = 0] = "This"; + TypePredicateKind[TypePredicateKind["Identifier"] = 1] = "Identifier"; + TypePredicateKind[TypePredicateKind["AssertsThis"] = 2] = "AssertsThis"; + TypePredicateKind[TypePredicateKind["AssertsIdentifier"] = 3] = "AssertsIdentifier"; + })(TypePredicateKind = ts.TypePredicateKind || (ts.TypePredicateKind = {})); + /** Indicates how to serialize the name for a TypeReferenceNode when emitting decorator metadata */ + /* @internal */ + var TypeReferenceSerializationKind; + (function (TypeReferenceSerializationKind) { + // The TypeReferenceNode could not be resolved. + // The type name should be emitted using a safe fallback. + TypeReferenceSerializationKind[TypeReferenceSerializationKind["Unknown"] = 0] = "Unknown"; + // The TypeReferenceNode resolves to a type with a constructor + // function that can be reached at runtime (e.g. a `class` + // declaration or a `var` declaration for the static side + // of a type, such as the global `Promise` type in lib.d.ts). + TypeReferenceSerializationKind[TypeReferenceSerializationKind["TypeWithConstructSignatureAndValue"] = 1] = "TypeWithConstructSignatureAndValue"; + // The TypeReferenceNode resolves to a Void-like, Nullable, or Never type. + TypeReferenceSerializationKind[TypeReferenceSerializationKind["VoidNullableOrNeverType"] = 2] = "VoidNullableOrNeverType"; + // The TypeReferenceNode resolves to a Number-like type. + TypeReferenceSerializationKind[TypeReferenceSerializationKind["NumberLikeType"] = 3] = "NumberLikeType"; + // The TypeReferenceNode resolves to a BigInt-like type. + TypeReferenceSerializationKind[TypeReferenceSerializationKind["BigIntLikeType"] = 4] = "BigIntLikeType"; + // The TypeReferenceNode resolves to a String-like type. + TypeReferenceSerializationKind[TypeReferenceSerializationKind["StringLikeType"] = 5] = "StringLikeType"; + // The TypeReferenceNode resolves to a Boolean-like type. + TypeReferenceSerializationKind[TypeReferenceSerializationKind["BooleanType"] = 6] = "BooleanType"; + // The TypeReferenceNode resolves to an Array-like type. + TypeReferenceSerializationKind[TypeReferenceSerializationKind["ArrayLikeType"] = 7] = "ArrayLikeType"; + // The TypeReferenceNode resolves to the ESSymbol type. + TypeReferenceSerializationKind[TypeReferenceSerializationKind["ESSymbolType"] = 8] = "ESSymbolType"; + // The TypeReferenceNode resolved to the global Promise constructor symbol. + TypeReferenceSerializationKind[TypeReferenceSerializationKind["Promise"] = 9] = "Promise"; + // The TypeReferenceNode resolves to a Function type or a type with call signatures. + TypeReferenceSerializationKind[TypeReferenceSerializationKind["TypeWithCallSignature"] = 10] = "TypeWithCallSignature"; + // The TypeReferenceNode resolves to any other type. + TypeReferenceSerializationKind[TypeReferenceSerializationKind["ObjectType"] = 11] = "ObjectType"; + })(TypeReferenceSerializationKind = ts.TypeReferenceSerializationKind || (ts.TypeReferenceSerializationKind = {})); + var SymbolFlags; + (function (SymbolFlags) { + SymbolFlags[SymbolFlags["None"] = 0] = "None"; + SymbolFlags[SymbolFlags["FunctionScopedVariable"] = 1] = "FunctionScopedVariable"; + SymbolFlags[SymbolFlags["BlockScopedVariable"] = 2] = "BlockScopedVariable"; + SymbolFlags[SymbolFlags["Property"] = 4] = "Property"; + SymbolFlags[SymbolFlags["EnumMember"] = 8] = "EnumMember"; + SymbolFlags[SymbolFlags["Function"] = 16] = "Function"; + SymbolFlags[SymbolFlags["Class"] = 32] = "Class"; + SymbolFlags[SymbolFlags["Interface"] = 64] = "Interface"; + SymbolFlags[SymbolFlags["ConstEnum"] = 128] = "ConstEnum"; + SymbolFlags[SymbolFlags["RegularEnum"] = 256] = "RegularEnum"; + SymbolFlags[SymbolFlags["ValueModule"] = 512] = "ValueModule"; + SymbolFlags[SymbolFlags["NamespaceModule"] = 1024] = "NamespaceModule"; + SymbolFlags[SymbolFlags["TypeLiteral"] = 2048] = "TypeLiteral"; + SymbolFlags[SymbolFlags["ObjectLiteral"] = 4096] = "ObjectLiteral"; + SymbolFlags[SymbolFlags["Method"] = 8192] = "Method"; + SymbolFlags[SymbolFlags["Constructor"] = 16384] = "Constructor"; + SymbolFlags[SymbolFlags["GetAccessor"] = 32768] = "GetAccessor"; + SymbolFlags[SymbolFlags["SetAccessor"] = 65536] = "SetAccessor"; + SymbolFlags[SymbolFlags["Signature"] = 131072] = "Signature"; + SymbolFlags[SymbolFlags["TypeParameter"] = 262144] = "TypeParameter"; + SymbolFlags[SymbolFlags["TypeAlias"] = 524288] = "TypeAlias"; + SymbolFlags[SymbolFlags["ExportValue"] = 1048576] = "ExportValue"; + SymbolFlags[SymbolFlags["Alias"] = 2097152] = "Alias"; + SymbolFlags[SymbolFlags["Prototype"] = 4194304] = "Prototype"; + SymbolFlags[SymbolFlags["ExportStar"] = 8388608] = "ExportStar"; + SymbolFlags[SymbolFlags["Optional"] = 16777216] = "Optional"; + SymbolFlags[SymbolFlags["Transient"] = 33554432] = "Transient"; + SymbolFlags[SymbolFlags["Assignment"] = 67108864] = "Assignment"; + SymbolFlags[SymbolFlags["ModuleExports"] = 134217728] = "ModuleExports"; + /* @internal */ + SymbolFlags[SymbolFlags["All"] = 67108863] = "All"; + SymbolFlags[SymbolFlags["Enum"] = 384] = "Enum"; + SymbolFlags[SymbolFlags["Variable"] = 3] = "Variable"; + SymbolFlags[SymbolFlags["Value"] = 111551] = "Value"; + SymbolFlags[SymbolFlags["Type"] = 788968] = "Type"; + SymbolFlags[SymbolFlags["Namespace"] = 1920] = "Namespace"; + SymbolFlags[SymbolFlags["Module"] = 1536] = "Module"; + SymbolFlags[SymbolFlags["Accessor"] = 98304] = "Accessor"; + // Variables can be redeclared, but can not redeclare a block-scoped declaration with the + // same name, or any other value that is not a variable, e.g. ValueModule or Class + SymbolFlags[SymbolFlags["FunctionScopedVariableExcludes"] = 111550] = "FunctionScopedVariableExcludes"; + // Block-scoped declarations are not allowed to be re-declared + // they can not merge with anything in the value space + SymbolFlags[SymbolFlags["BlockScopedVariableExcludes"] = 111551] = "BlockScopedVariableExcludes"; + SymbolFlags[SymbolFlags["ParameterExcludes"] = 111551] = "ParameterExcludes"; + SymbolFlags[SymbolFlags["PropertyExcludes"] = 0] = "PropertyExcludes"; + SymbolFlags[SymbolFlags["EnumMemberExcludes"] = 900095] = "EnumMemberExcludes"; + SymbolFlags[SymbolFlags["FunctionExcludes"] = 110991] = "FunctionExcludes"; + SymbolFlags[SymbolFlags["ClassExcludes"] = 899503] = "ClassExcludes"; + SymbolFlags[SymbolFlags["InterfaceExcludes"] = 788872] = "InterfaceExcludes"; + SymbolFlags[SymbolFlags["RegularEnumExcludes"] = 899327] = "RegularEnumExcludes"; + SymbolFlags[SymbolFlags["ConstEnumExcludes"] = 899967] = "ConstEnumExcludes"; + SymbolFlags[SymbolFlags["ValueModuleExcludes"] = 110735] = "ValueModuleExcludes"; + SymbolFlags[SymbolFlags["NamespaceModuleExcludes"] = 0] = "NamespaceModuleExcludes"; + SymbolFlags[SymbolFlags["MethodExcludes"] = 103359] = "MethodExcludes"; + SymbolFlags[SymbolFlags["GetAccessorExcludes"] = 46015] = "GetAccessorExcludes"; + SymbolFlags[SymbolFlags["SetAccessorExcludes"] = 78783] = "SetAccessorExcludes"; + SymbolFlags[SymbolFlags["TypeParameterExcludes"] = 526824] = "TypeParameterExcludes"; + SymbolFlags[SymbolFlags["TypeAliasExcludes"] = 788968] = "TypeAliasExcludes"; + SymbolFlags[SymbolFlags["AliasExcludes"] = 2097152] = "AliasExcludes"; + SymbolFlags[SymbolFlags["ModuleMember"] = 2623475] = "ModuleMember"; + SymbolFlags[SymbolFlags["ExportHasLocal"] = 944] = "ExportHasLocal"; + SymbolFlags[SymbolFlags["BlockScoped"] = 418] = "BlockScoped"; + SymbolFlags[SymbolFlags["PropertyOrAccessor"] = 98308] = "PropertyOrAccessor"; + SymbolFlags[SymbolFlags["ClassMember"] = 106500] = "ClassMember"; + /* @internal */ + SymbolFlags[SymbolFlags["ExportSupportsDefaultModifier"] = 112] = "ExportSupportsDefaultModifier"; + /* @internal */ + SymbolFlags[SymbolFlags["ExportDoesNotSupportDefaultModifier"] = -113] = "ExportDoesNotSupportDefaultModifier"; + /* @internal */ + // The set of things we consider semantically classifiable. Used to speed up the LS during + // classification. + SymbolFlags[SymbolFlags["Classifiable"] = 2885600] = "Classifiable"; + /* @internal */ + SymbolFlags[SymbolFlags["LateBindingContainer"] = 6256] = "LateBindingContainer"; + })(SymbolFlags = ts.SymbolFlags || (ts.SymbolFlags = {})); + /* @internal */ + var EnumKind; + (function (EnumKind) { + EnumKind[EnumKind["Numeric"] = 0] = "Numeric"; + EnumKind[EnumKind["Literal"] = 1] = "Literal"; // Literal enum (each member has a TypeFlags.EnumLiteral type) + })(EnumKind = ts.EnumKind || (ts.EnumKind = {})); + /* @internal */ + var CheckFlags; + (function (CheckFlags) { + CheckFlags[CheckFlags["Instantiated"] = 1] = "Instantiated"; + CheckFlags[CheckFlags["SyntheticProperty"] = 2] = "SyntheticProperty"; + CheckFlags[CheckFlags["SyntheticMethod"] = 4] = "SyntheticMethod"; + CheckFlags[CheckFlags["Readonly"] = 8] = "Readonly"; + CheckFlags[CheckFlags["ReadPartial"] = 16] = "ReadPartial"; + CheckFlags[CheckFlags["WritePartial"] = 32] = "WritePartial"; + CheckFlags[CheckFlags["HasNonUniformType"] = 64] = "HasNonUniformType"; + CheckFlags[CheckFlags["HasLiteralType"] = 128] = "HasLiteralType"; + CheckFlags[CheckFlags["ContainsPublic"] = 256] = "ContainsPublic"; + CheckFlags[CheckFlags["ContainsProtected"] = 512] = "ContainsProtected"; + CheckFlags[CheckFlags["ContainsPrivate"] = 1024] = "ContainsPrivate"; + CheckFlags[CheckFlags["ContainsStatic"] = 2048] = "ContainsStatic"; + CheckFlags[CheckFlags["Late"] = 4096] = "Late"; + CheckFlags[CheckFlags["ReverseMapped"] = 8192] = "ReverseMapped"; + CheckFlags[CheckFlags["OptionalParameter"] = 16384] = "OptionalParameter"; + CheckFlags[CheckFlags["RestParameter"] = 32768] = "RestParameter"; + CheckFlags[CheckFlags["DeferredType"] = 65536] = "DeferredType"; + CheckFlags[CheckFlags["HasNeverType"] = 131072] = "HasNeverType"; + CheckFlags[CheckFlags["Mapped"] = 262144] = "Mapped"; + CheckFlags[CheckFlags["StripOptional"] = 524288] = "StripOptional"; + CheckFlags[CheckFlags["Synthetic"] = 6] = "Synthetic"; + CheckFlags[CheckFlags["Discriminant"] = 192] = "Discriminant"; + CheckFlags[CheckFlags["Partial"] = 48] = "Partial"; + })(CheckFlags = ts.CheckFlags || (ts.CheckFlags = {})); + var InternalSymbolName; + (function (InternalSymbolName) { + InternalSymbolName["Call"] = "__call"; + InternalSymbolName["Constructor"] = "__constructor"; + InternalSymbolName["New"] = "__new"; + InternalSymbolName["Index"] = "__index"; + InternalSymbolName["ExportStar"] = "__export"; + InternalSymbolName["Global"] = "__global"; + InternalSymbolName["Missing"] = "__missing"; + InternalSymbolName["Type"] = "__type"; + InternalSymbolName["Object"] = "__object"; + InternalSymbolName["JSXAttributes"] = "__jsxAttributes"; + InternalSymbolName["Class"] = "__class"; + InternalSymbolName["Function"] = "__function"; + InternalSymbolName["Computed"] = "__computed"; + InternalSymbolName["Resolving"] = "__resolving__"; + InternalSymbolName["ExportEquals"] = "export="; + InternalSymbolName["Default"] = "default"; + InternalSymbolName["This"] = "this"; + })(InternalSymbolName = ts.InternalSymbolName || (ts.InternalSymbolName = {})); + /* @internal */ + var NodeCheckFlags; + (function (NodeCheckFlags) { + NodeCheckFlags[NodeCheckFlags["TypeChecked"] = 1] = "TypeChecked"; + NodeCheckFlags[NodeCheckFlags["LexicalThis"] = 2] = "LexicalThis"; + NodeCheckFlags[NodeCheckFlags["CaptureThis"] = 4] = "CaptureThis"; + NodeCheckFlags[NodeCheckFlags["CaptureNewTarget"] = 8] = "CaptureNewTarget"; + NodeCheckFlags[NodeCheckFlags["SuperInstance"] = 256] = "SuperInstance"; + NodeCheckFlags[NodeCheckFlags["SuperStatic"] = 512] = "SuperStatic"; + NodeCheckFlags[NodeCheckFlags["ContextChecked"] = 1024] = "ContextChecked"; + NodeCheckFlags[NodeCheckFlags["AsyncMethodWithSuper"] = 2048] = "AsyncMethodWithSuper"; + NodeCheckFlags[NodeCheckFlags["AsyncMethodWithSuperBinding"] = 4096] = "AsyncMethodWithSuperBinding"; + NodeCheckFlags[NodeCheckFlags["CaptureArguments"] = 8192] = "CaptureArguments"; + NodeCheckFlags[NodeCheckFlags["EnumValuesComputed"] = 16384] = "EnumValuesComputed"; + NodeCheckFlags[NodeCheckFlags["LexicalModuleMergesWithClass"] = 32768] = "LexicalModuleMergesWithClass"; + NodeCheckFlags[NodeCheckFlags["LoopWithCapturedBlockScopedBinding"] = 65536] = "LoopWithCapturedBlockScopedBinding"; + NodeCheckFlags[NodeCheckFlags["ContainsCapturedBlockScopeBinding"] = 131072] = "ContainsCapturedBlockScopeBinding"; + NodeCheckFlags[NodeCheckFlags["CapturedBlockScopedBinding"] = 262144] = "CapturedBlockScopedBinding"; + NodeCheckFlags[NodeCheckFlags["BlockScopedBindingInLoop"] = 524288] = "BlockScopedBindingInLoop"; + NodeCheckFlags[NodeCheckFlags["ClassWithBodyScopedClassBinding"] = 1048576] = "ClassWithBodyScopedClassBinding"; + NodeCheckFlags[NodeCheckFlags["BodyScopedClassBinding"] = 2097152] = "BodyScopedClassBinding"; + NodeCheckFlags[NodeCheckFlags["NeedsLoopOutParameter"] = 4194304] = "NeedsLoopOutParameter"; + NodeCheckFlags[NodeCheckFlags["AssignmentsMarked"] = 8388608] = "AssignmentsMarked"; + NodeCheckFlags[NodeCheckFlags["ClassWithConstructorReference"] = 16777216] = "ClassWithConstructorReference"; + NodeCheckFlags[NodeCheckFlags["ConstructorReferenceInClass"] = 33554432] = "ConstructorReferenceInClass"; + NodeCheckFlags[NodeCheckFlags["ContainsClassWithPrivateIdentifiers"] = 67108864] = "ContainsClassWithPrivateIdentifiers"; + })(NodeCheckFlags = ts.NodeCheckFlags || (ts.NodeCheckFlags = {})); + var TypeFlags; + (function (TypeFlags) { + TypeFlags[TypeFlags["Any"] = 1] = "Any"; + TypeFlags[TypeFlags["Unknown"] = 2] = "Unknown"; + TypeFlags[TypeFlags["String"] = 4] = "String"; + TypeFlags[TypeFlags["Number"] = 8] = "Number"; + TypeFlags[TypeFlags["Boolean"] = 16] = "Boolean"; + TypeFlags[TypeFlags["Enum"] = 32] = "Enum"; + TypeFlags[TypeFlags["BigInt"] = 64] = "BigInt"; + TypeFlags[TypeFlags["StringLiteral"] = 128] = "StringLiteral"; + TypeFlags[TypeFlags["NumberLiteral"] = 256] = "NumberLiteral"; + TypeFlags[TypeFlags["BooleanLiteral"] = 512] = "BooleanLiteral"; + TypeFlags[TypeFlags["EnumLiteral"] = 1024] = "EnumLiteral"; + TypeFlags[TypeFlags["BigIntLiteral"] = 2048] = "BigIntLiteral"; + TypeFlags[TypeFlags["ESSymbol"] = 4096] = "ESSymbol"; + TypeFlags[TypeFlags["UniqueESSymbol"] = 8192] = "UniqueESSymbol"; + TypeFlags[TypeFlags["Void"] = 16384] = "Void"; + TypeFlags[TypeFlags["Undefined"] = 32768] = "Undefined"; + TypeFlags[TypeFlags["Null"] = 65536] = "Null"; + TypeFlags[TypeFlags["Never"] = 131072] = "Never"; + TypeFlags[TypeFlags["TypeParameter"] = 262144] = "TypeParameter"; + TypeFlags[TypeFlags["Object"] = 524288] = "Object"; + TypeFlags[TypeFlags["Union"] = 1048576] = "Union"; + TypeFlags[TypeFlags["Intersection"] = 2097152] = "Intersection"; + TypeFlags[TypeFlags["Index"] = 4194304] = "Index"; + TypeFlags[TypeFlags["IndexedAccess"] = 8388608] = "IndexedAccess"; + TypeFlags[TypeFlags["Conditional"] = 16777216] = "Conditional"; + TypeFlags[TypeFlags["Substitution"] = 33554432] = "Substitution"; + TypeFlags[TypeFlags["NonPrimitive"] = 67108864] = "NonPrimitive"; + /* @internal */ + TypeFlags[TypeFlags["AnyOrUnknown"] = 3] = "AnyOrUnknown"; + /* @internal */ + TypeFlags[TypeFlags["Nullable"] = 98304] = "Nullable"; + TypeFlags[TypeFlags["Literal"] = 2944] = "Literal"; + TypeFlags[TypeFlags["Unit"] = 109440] = "Unit"; + TypeFlags[TypeFlags["StringOrNumberLiteral"] = 384] = "StringOrNumberLiteral"; + /* @internal */ + TypeFlags[TypeFlags["StringOrNumberLiteralOrUnique"] = 8576] = "StringOrNumberLiteralOrUnique"; + /* @internal */ + TypeFlags[TypeFlags["DefinitelyFalsy"] = 117632] = "DefinitelyFalsy"; + TypeFlags[TypeFlags["PossiblyFalsy"] = 117724] = "PossiblyFalsy"; + /* @internal */ + TypeFlags[TypeFlags["Intrinsic"] = 67359327] = "Intrinsic"; + /* @internal */ + TypeFlags[TypeFlags["Primitive"] = 131068] = "Primitive"; + TypeFlags[TypeFlags["StringLike"] = 132] = "StringLike"; + TypeFlags[TypeFlags["NumberLike"] = 296] = "NumberLike"; + TypeFlags[TypeFlags["BigIntLike"] = 2112] = "BigIntLike"; + TypeFlags[TypeFlags["BooleanLike"] = 528] = "BooleanLike"; + TypeFlags[TypeFlags["EnumLike"] = 1056] = "EnumLike"; + TypeFlags[TypeFlags["ESSymbolLike"] = 12288] = "ESSymbolLike"; + TypeFlags[TypeFlags["VoidLike"] = 49152] = "VoidLike"; + /* @internal */ + TypeFlags[TypeFlags["DisjointDomains"] = 67238908] = "DisjointDomains"; + TypeFlags[TypeFlags["UnionOrIntersection"] = 3145728] = "UnionOrIntersection"; + TypeFlags[TypeFlags["StructuredType"] = 3670016] = "StructuredType"; + TypeFlags[TypeFlags["TypeVariable"] = 8650752] = "TypeVariable"; + TypeFlags[TypeFlags["InstantiableNonPrimitive"] = 58982400] = "InstantiableNonPrimitive"; + TypeFlags[TypeFlags["InstantiablePrimitive"] = 4194304] = "InstantiablePrimitive"; + TypeFlags[TypeFlags["Instantiable"] = 63176704] = "Instantiable"; + TypeFlags[TypeFlags["StructuredOrInstantiable"] = 66846720] = "StructuredOrInstantiable"; + /* @internal */ + TypeFlags[TypeFlags["ObjectFlagsType"] = 3899393] = "ObjectFlagsType"; + /* @internal */ + TypeFlags[TypeFlags["Simplifiable"] = 25165824] = "Simplifiable"; + /* @internal */ + TypeFlags[TypeFlags["Substructure"] = 66584576] = "Substructure"; + // 'Narrowable' types are types where narrowing actually narrows. + // This *should* be every type other than null, undefined, void, and never + TypeFlags[TypeFlags["Narrowable"] = 133970943] = "Narrowable"; + TypeFlags[TypeFlags["NotUnionOrUnit"] = 67637251] = "NotUnionOrUnit"; + /* @internal */ + TypeFlags[TypeFlags["NotPrimitiveUnion"] = 66994211] = "NotPrimitiveUnion"; + // The following flags are aggregated during union and intersection type construction + /* @internal */ + TypeFlags[TypeFlags["IncludesMask"] = 71041023] = "IncludesMask"; + // The following flags are used for different purposes during union and intersection type construction + /* @internal */ + TypeFlags[TypeFlags["IncludesStructuredOrInstantiable"] = 262144] = "IncludesStructuredOrInstantiable"; + /* @internal */ + TypeFlags[TypeFlags["IncludesNonWideningType"] = 4194304] = "IncludesNonWideningType"; + /* @internal */ + TypeFlags[TypeFlags["IncludesWildcard"] = 8388608] = "IncludesWildcard"; + /* @internal */ + TypeFlags[TypeFlags["IncludesEmptyObject"] = 16777216] = "IncludesEmptyObject"; + })(TypeFlags = ts.TypeFlags || (ts.TypeFlags = {})); + var ObjectFlags; + (function (ObjectFlags) { + ObjectFlags[ObjectFlags["Class"] = 1] = "Class"; + ObjectFlags[ObjectFlags["Interface"] = 2] = "Interface"; + ObjectFlags[ObjectFlags["Reference"] = 4] = "Reference"; + ObjectFlags[ObjectFlags["Tuple"] = 8] = "Tuple"; + ObjectFlags[ObjectFlags["Anonymous"] = 16] = "Anonymous"; + ObjectFlags[ObjectFlags["Mapped"] = 32] = "Mapped"; + ObjectFlags[ObjectFlags["Instantiated"] = 64] = "Instantiated"; + ObjectFlags[ObjectFlags["ObjectLiteral"] = 128] = "ObjectLiteral"; + ObjectFlags[ObjectFlags["EvolvingArray"] = 256] = "EvolvingArray"; + ObjectFlags[ObjectFlags["ObjectLiteralPatternWithComputedProperties"] = 512] = "ObjectLiteralPatternWithComputedProperties"; + ObjectFlags[ObjectFlags["ContainsSpread"] = 1024] = "ContainsSpread"; + ObjectFlags[ObjectFlags["ReverseMapped"] = 2048] = "ReverseMapped"; + ObjectFlags[ObjectFlags["JsxAttributes"] = 4096] = "JsxAttributes"; + ObjectFlags[ObjectFlags["MarkerType"] = 8192] = "MarkerType"; + ObjectFlags[ObjectFlags["JSLiteral"] = 16384] = "JSLiteral"; + ObjectFlags[ObjectFlags["FreshLiteral"] = 32768] = "FreshLiteral"; + ObjectFlags[ObjectFlags["ArrayLiteral"] = 65536] = "ArrayLiteral"; + ObjectFlags[ObjectFlags["ObjectRestType"] = 131072] = "ObjectRestType"; + /* @internal */ + ObjectFlags[ObjectFlags["PrimitiveUnion"] = 262144] = "PrimitiveUnion"; + /* @internal */ + ObjectFlags[ObjectFlags["ContainsWideningType"] = 524288] = "ContainsWideningType"; + /* @internal */ + ObjectFlags[ObjectFlags["ContainsObjectOrArrayLiteral"] = 1048576] = "ContainsObjectOrArrayLiteral"; + /* @internal */ + ObjectFlags[ObjectFlags["NonInferrableType"] = 2097152] = "NonInferrableType"; + /* @internal */ + ObjectFlags[ObjectFlags["IsGenericObjectTypeComputed"] = 4194304] = "IsGenericObjectTypeComputed"; + /* @internal */ + ObjectFlags[ObjectFlags["IsGenericObjectType"] = 8388608] = "IsGenericObjectType"; + /* @internal */ + ObjectFlags[ObjectFlags["IsGenericIndexTypeComputed"] = 16777216] = "IsGenericIndexTypeComputed"; + /* @internal */ + ObjectFlags[ObjectFlags["IsGenericIndexType"] = 33554432] = "IsGenericIndexType"; + /* @internal */ + ObjectFlags[ObjectFlags["CouldContainTypeVariablesComputed"] = 67108864] = "CouldContainTypeVariablesComputed"; + /* @internal */ + ObjectFlags[ObjectFlags["CouldContainTypeVariables"] = 134217728] = "CouldContainTypeVariables"; + /* @internal */ + ObjectFlags[ObjectFlags["ContainsIntersections"] = 268435456] = "ContainsIntersections"; + /* @internal */ + ObjectFlags[ObjectFlags["IsNeverIntersectionComputed"] = 268435456] = "IsNeverIntersectionComputed"; + /* @internal */ + ObjectFlags[ObjectFlags["IsNeverIntersection"] = 536870912] = "IsNeverIntersection"; + ObjectFlags[ObjectFlags["ClassOrInterface"] = 3] = "ClassOrInterface"; + /* @internal */ + ObjectFlags[ObjectFlags["RequiresWidening"] = 1572864] = "RequiresWidening"; + /* @internal */ + ObjectFlags[ObjectFlags["PropagatingFlags"] = 3670016] = "PropagatingFlags"; + })(ObjectFlags = ts.ObjectFlags || (ts.ObjectFlags = {})); + /* @internal */ + var VarianceFlags; + (function (VarianceFlags) { + VarianceFlags[VarianceFlags["Invariant"] = 0] = "Invariant"; + VarianceFlags[VarianceFlags["Covariant"] = 1] = "Covariant"; + VarianceFlags[VarianceFlags["Contravariant"] = 2] = "Contravariant"; + VarianceFlags[VarianceFlags["Bivariant"] = 3] = "Bivariant"; + VarianceFlags[VarianceFlags["Independent"] = 4] = "Independent"; + VarianceFlags[VarianceFlags["VarianceMask"] = 7] = "VarianceMask"; + VarianceFlags[VarianceFlags["Unmeasurable"] = 8] = "Unmeasurable"; + VarianceFlags[VarianceFlags["Unreliable"] = 16] = "Unreliable"; + VarianceFlags[VarianceFlags["AllowsStructuralFallback"] = 24] = "AllowsStructuralFallback"; + })(VarianceFlags = ts.VarianceFlags || (ts.VarianceFlags = {})); + /* @internal */ + var JsxReferenceKind; + (function (JsxReferenceKind) { + JsxReferenceKind[JsxReferenceKind["Component"] = 0] = "Component"; + JsxReferenceKind[JsxReferenceKind["Function"] = 1] = "Function"; + JsxReferenceKind[JsxReferenceKind["Mixed"] = 2] = "Mixed"; + })(JsxReferenceKind = ts.JsxReferenceKind || (ts.JsxReferenceKind = {})); + var SignatureKind; + (function (SignatureKind) { + SignatureKind[SignatureKind["Call"] = 0] = "Call"; + SignatureKind[SignatureKind["Construct"] = 1] = "Construct"; + })(SignatureKind = ts.SignatureKind || (ts.SignatureKind = {})); + /* @internal */ + var SignatureFlags; + (function (SignatureFlags) { + SignatureFlags[SignatureFlags["None"] = 0] = "None"; + SignatureFlags[SignatureFlags["HasRestParameter"] = 1] = "HasRestParameter"; + SignatureFlags[SignatureFlags["HasLiteralTypes"] = 2] = "HasLiteralTypes"; + SignatureFlags[SignatureFlags["IsInnerCallChain"] = 4] = "IsInnerCallChain"; + SignatureFlags[SignatureFlags["IsOuterCallChain"] = 8] = "IsOuterCallChain"; + SignatureFlags[SignatureFlags["IsUntypedSignatureInJSFile"] = 16] = "IsUntypedSignatureInJSFile"; + // We do not propagate `IsInnerCallChain` to instantiated signatures, as that would result in us + // attempting to add `| undefined` on each recursive call to `getReturnTypeOfSignature` when + // instantiating the return type. + SignatureFlags[SignatureFlags["PropagatingFlags"] = 3] = "PropagatingFlags"; + SignatureFlags[SignatureFlags["CallChainFlags"] = 12] = "CallChainFlags"; + })(SignatureFlags = ts.SignatureFlags || (ts.SignatureFlags = {})); + var IndexKind; + (function (IndexKind) { + IndexKind[IndexKind["String"] = 0] = "String"; + IndexKind[IndexKind["Number"] = 1] = "Number"; + })(IndexKind = ts.IndexKind || (ts.IndexKind = {})); + /* @internal */ + var TypeMapKind; + (function (TypeMapKind) { + TypeMapKind[TypeMapKind["Simple"] = 0] = "Simple"; + TypeMapKind[TypeMapKind["Array"] = 1] = "Array"; + TypeMapKind[TypeMapKind["Function"] = 2] = "Function"; + TypeMapKind[TypeMapKind["Composite"] = 3] = "Composite"; + TypeMapKind[TypeMapKind["Merged"] = 4] = "Merged"; + })(TypeMapKind = ts.TypeMapKind || (ts.TypeMapKind = {})); + var InferencePriority; + (function (InferencePriority) { + InferencePriority[InferencePriority["NakedTypeVariable"] = 1] = "NakedTypeVariable"; + InferencePriority[InferencePriority["HomomorphicMappedType"] = 2] = "HomomorphicMappedType"; + InferencePriority[InferencePriority["PartialHomomorphicMappedType"] = 4] = "PartialHomomorphicMappedType"; + InferencePriority[InferencePriority["MappedTypeConstraint"] = 8] = "MappedTypeConstraint"; + InferencePriority[InferencePriority["ContravariantConditional"] = 16] = "ContravariantConditional"; + InferencePriority[InferencePriority["ReturnType"] = 32] = "ReturnType"; + InferencePriority[InferencePriority["LiteralKeyof"] = 64] = "LiteralKeyof"; + InferencePriority[InferencePriority["NoConstraints"] = 128] = "NoConstraints"; + InferencePriority[InferencePriority["AlwaysStrict"] = 256] = "AlwaysStrict"; + InferencePriority[InferencePriority["MaxValue"] = 512] = "MaxValue"; + InferencePriority[InferencePriority["PriorityImpliesCombination"] = 104] = "PriorityImpliesCombination"; + InferencePriority[InferencePriority["Circularity"] = -1] = "Circularity"; + })(InferencePriority = ts.InferencePriority || (ts.InferencePriority = {})); + /* @internal */ + var InferenceFlags; + (function (InferenceFlags) { + InferenceFlags[InferenceFlags["None"] = 0] = "None"; + InferenceFlags[InferenceFlags["NoDefault"] = 1] = "NoDefault"; + InferenceFlags[InferenceFlags["AnyDefault"] = 2] = "AnyDefault"; + InferenceFlags[InferenceFlags["SkippedGenericFunction"] = 4] = "SkippedGenericFunction"; + })(InferenceFlags = ts.InferenceFlags || (ts.InferenceFlags = {})); + /** + * Ternary values are defined such that + * x & y is False if either x or y is False. + * x & y is Maybe if either x or y is Maybe, but neither x or y is False. + * x & y is True if both x and y are True. + * x | y is False if both x and y are False. + * x | y is Maybe if either x or y is Maybe, but neither x or y is True. + * x | y is True if either x or y is True. + */ + /* @internal */ + var Ternary; + (function (Ternary) { + Ternary[Ternary["False"] = 0] = "False"; + Ternary[Ternary["Maybe"] = 1] = "Maybe"; + Ternary[Ternary["True"] = -1] = "True"; + })(Ternary = ts.Ternary || (ts.Ternary = {})); + /* @internal */ + var AssignmentDeclarationKind; + (function (AssignmentDeclarationKind) { + AssignmentDeclarationKind[AssignmentDeclarationKind["None"] = 0] = "None"; + /// exports.name = expr + AssignmentDeclarationKind[AssignmentDeclarationKind["ExportsProperty"] = 1] = "ExportsProperty"; + /// module.exports = expr + AssignmentDeclarationKind[AssignmentDeclarationKind["ModuleExports"] = 2] = "ModuleExports"; + /// className.prototype.name = expr + AssignmentDeclarationKind[AssignmentDeclarationKind["PrototypeProperty"] = 3] = "PrototypeProperty"; + /// this.name = expr + AssignmentDeclarationKind[AssignmentDeclarationKind["ThisProperty"] = 4] = "ThisProperty"; + // F.name = expr + AssignmentDeclarationKind[AssignmentDeclarationKind["Property"] = 5] = "Property"; + // F.prototype = { ... } + AssignmentDeclarationKind[AssignmentDeclarationKind["Prototype"] = 6] = "Prototype"; + // Object.defineProperty(x, 'name', { value: any, writable?: boolean (false by default) }); + // Object.defineProperty(x, 'name', { get: Function, set: Function }); + // Object.defineProperty(x, 'name', { get: Function }); + // Object.defineProperty(x, 'name', { set: Function }); + AssignmentDeclarationKind[AssignmentDeclarationKind["ObjectDefinePropertyValue"] = 7] = "ObjectDefinePropertyValue"; + // Object.defineProperty(exports || module.exports, 'name', ...); + AssignmentDeclarationKind[AssignmentDeclarationKind["ObjectDefinePropertyExports"] = 8] = "ObjectDefinePropertyExports"; + // Object.defineProperty(Foo.prototype, 'name', ...); + AssignmentDeclarationKind[AssignmentDeclarationKind["ObjectDefinePrototypeProperty"] = 9] = "ObjectDefinePrototypeProperty"; + })(AssignmentDeclarationKind = ts.AssignmentDeclarationKind || (ts.AssignmentDeclarationKind = {})); + var DiagnosticCategory; + (function (DiagnosticCategory) { + DiagnosticCategory[DiagnosticCategory["Warning"] = 0] = "Warning"; + DiagnosticCategory[DiagnosticCategory["Error"] = 1] = "Error"; + DiagnosticCategory[DiagnosticCategory["Suggestion"] = 2] = "Suggestion"; + DiagnosticCategory[DiagnosticCategory["Message"] = 3] = "Message"; + })(DiagnosticCategory = ts.DiagnosticCategory || (ts.DiagnosticCategory = {})); + /* @internal */ + function diagnosticCategoryName(d, lowerCase) { + if (lowerCase === void 0) { lowerCase = true; } + var name = DiagnosticCategory[d.category]; + return lowerCase ? name.toLowerCase() : name; + } + ts.diagnosticCategoryName = diagnosticCategoryName; + var ModuleResolutionKind; + (function (ModuleResolutionKind) { + ModuleResolutionKind[ModuleResolutionKind["Classic"] = 1] = "Classic"; + ModuleResolutionKind[ModuleResolutionKind["NodeJs"] = 2] = "NodeJs"; + })(ModuleResolutionKind = ts.ModuleResolutionKind || (ts.ModuleResolutionKind = {})); + var WatchFileKind; + (function (WatchFileKind) { + WatchFileKind[WatchFileKind["FixedPollingInterval"] = 0] = "FixedPollingInterval"; + WatchFileKind[WatchFileKind["PriorityPollingInterval"] = 1] = "PriorityPollingInterval"; + WatchFileKind[WatchFileKind["DynamicPriorityPolling"] = 2] = "DynamicPriorityPolling"; + WatchFileKind[WatchFileKind["UseFsEvents"] = 3] = "UseFsEvents"; + WatchFileKind[WatchFileKind["UseFsEventsOnParentDirectory"] = 4] = "UseFsEventsOnParentDirectory"; + })(WatchFileKind = ts.WatchFileKind || (ts.WatchFileKind = {})); + var WatchDirectoryKind; + (function (WatchDirectoryKind) { + WatchDirectoryKind[WatchDirectoryKind["UseFsEvents"] = 0] = "UseFsEvents"; + WatchDirectoryKind[WatchDirectoryKind["FixedPollingInterval"] = 1] = "FixedPollingInterval"; + WatchDirectoryKind[WatchDirectoryKind["DynamicPriorityPolling"] = 2] = "DynamicPriorityPolling"; + })(WatchDirectoryKind = ts.WatchDirectoryKind || (ts.WatchDirectoryKind = {})); + var PollingWatchKind; + (function (PollingWatchKind) { + PollingWatchKind[PollingWatchKind["FixedInterval"] = 0] = "FixedInterval"; + PollingWatchKind[PollingWatchKind["PriorityInterval"] = 1] = "PriorityInterval"; + PollingWatchKind[PollingWatchKind["DynamicPriority"] = 2] = "DynamicPriority"; + })(PollingWatchKind = ts.PollingWatchKind || (ts.PollingWatchKind = {})); + var ModuleKind; + (function (ModuleKind) { + ModuleKind[ModuleKind["None"] = 0] = "None"; + ModuleKind[ModuleKind["CommonJS"] = 1] = "CommonJS"; + ModuleKind[ModuleKind["AMD"] = 2] = "AMD"; + ModuleKind[ModuleKind["UMD"] = 3] = "UMD"; + ModuleKind[ModuleKind["System"] = 4] = "System"; + // NOTE: ES module kinds should be contiguous to more easily check whether a module kind is *any* ES module kind. + // Non-ES module kinds should not come between ES2015 (the earliest ES module kind) and ESNext (the last ES + // module kind). + ModuleKind[ModuleKind["ES2015"] = 5] = "ES2015"; + ModuleKind[ModuleKind["ES2020"] = 6] = "ES2020"; + ModuleKind[ModuleKind["ESNext"] = 99] = "ESNext"; + })(ModuleKind = ts.ModuleKind || (ts.ModuleKind = {})); + var JsxEmit; + (function (JsxEmit) { + JsxEmit[JsxEmit["None"] = 0] = "None"; + JsxEmit[JsxEmit["Preserve"] = 1] = "Preserve"; + JsxEmit[JsxEmit["React"] = 2] = "React"; + JsxEmit[JsxEmit["ReactNative"] = 3] = "ReactNative"; + })(JsxEmit = ts.JsxEmit || (ts.JsxEmit = {})); + var ImportsNotUsedAsValues; + (function (ImportsNotUsedAsValues) { + ImportsNotUsedAsValues[ImportsNotUsedAsValues["Remove"] = 0] = "Remove"; + ImportsNotUsedAsValues[ImportsNotUsedAsValues["Preserve"] = 1] = "Preserve"; + ImportsNotUsedAsValues[ImportsNotUsedAsValues["Error"] = 2] = "Error"; + })(ImportsNotUsedAsValues = ts.ImportsNotUsedAsValues || (ts.ImportsNotUsedAsValues = {})); + var NewLineKind; + (function (NewLineKind) { + NewLineKind[NewLineKind["CarriageReturnLineFeed"] = 0] = "CarriageReturnLineFeed"; + NewLineKind[NewLineKind["LineFeed"] = 1] = "LineFeed"; + })(NewLineKind = ts.NewLineKind || (ts.NewLineKind = {})); + var ScriptKind; + (function (ScriptKind) { + ScriptKind[ScriptKind["Unknown"] = 0] = "Unknown"; + ScriptKind[ScriptKind["JS"] = 1] = "JS"; + ScriptKind[ScriptKind["JSX"] = 2] = "JSX"; + ScriptKind[ScriptKind["TS"] = 3] = "TS"; + ScriptKind[ScriptKind["TSX"] = 4] = "TSX"; + ScriptKind[ScriptKind["External"] = 5] = "External"; + ScriptKind[ScriptKind["JSON"] = 6] = "JSON"; + /** + * Used on extensions that doesn't define the ScriptKind but the content defines it. + * Deferred extensions are going to be included in all project contexts. + */ + ScriptKind[ScriptKind["Deferred"] = 7] = "Deferred"; + })(ScriptKind = ts.ScriptKind || (ts.ScriptKind = {})); + var ScriptTarget; + (function (ScriptTarget) { + ScriptTarget[ScriptTarget["ES3"] = 0] = "ES3"; + ScriptTarget[ScriptTarget["ES5"] = 1] = "ES5"; + ScriptTarget[ScriptTarget["ES2015"] = 2] = "ES2015"; + ScriptTarget[ScriptTarget["ES2016"] = 3] = "ES2016"; + ScriptTarget[ScriptTarget["ES2017"] = 4] = "ES2017"; + ScriptTarget[ScriptTarget["ES2018"] = 5] = "ES2018"; + ScriptTarget[ScriptTarget["ES2019"] = 6] = "ES2019"; + ScriptTarget[ScriptTarget["ES2020"] = 7] = "ES2020"; + ScriptTarget[ScriptTarget["ESNext"] = 99] = "ESNext"; + ScriptTarget[ScriptTarget["JSON"] = 100] = "JSON"; + ScriptTarget[ScriptTarget["Latest"] = 99] = "Latest"; + })(ScriptTarget = ts.ScriptTarget || (ts.ScriptTarget = {})); + var LanguageVariant; + (function (LanguageVariant) { + LanguageVariant[LanguageVariant["Standard"] = 0] = "Standard"; + LanguageVariant[LanguageVariant["JSX"] = 1] = "JSX"; + })(LanguageVariant = ts.LanguageVariant || (ts.LanguageVariant = {})); + var WatchDirectoryFlags; + (function (WatchDirectoryFlags) { + WatchDirectoryFlags[WatchDirectoryFlags["None"] = 0] = "None"; + WatchDirectoryFlags[WatchDirectoryFlags["Recursive"] = 1] = "Recursive"; + })(WatchDirectoryFlags = ts.WatchDirectoryFlags || (ts.WatchDirectoryFlags = {})); + /* @internal */ + var CharacterCodes; + (function (CharacterCodes) { + CharacterCodes[CharacterCodes["nullCharacter"] = 0] = "nullCharacter"; + CharacterCodes[CharacterCodes["maxAsciiCharacter"] = 127] = "maxAsciiCharacter"; + CharacterCodes[CharacterCodes["lineFeed"] = 10] = "lineFeed"; + CharacterCodes[CharacterCodes["carriageReturn"] = 13] = "carriageReturn"; + CharacterCodes[CharacterCodes["lineSeparator"] = 8232] = "lineSeparator"; + CharacterCodes[CharacterCodes["paragraphSeparator"] = 8233] = "paragraphSeparator"; + CharacterCodes[CharacterCodes["nextLine"] = 133] = "nextLine"; + // Unicode 3.0 space characters + CharacterCodes[CharacterCodes["space"] = 32] = "space"; + CharacterCodes[CharacterCodes["nonBreakingSpace"] = 160] = "nonBreakingSpace"; + CharacterCodes[CharacterCodes["enQuad"] = 8192] = "enQuad"; + CharacterCodes[CharacterCodes["emQuad"] = 8193] = "emQuad"; + CharacterCodes[CharacterCodes["enSpace"] = 8194] = "enSpace"; + CharacterCodes[CharacterCodes["emSpace"] = 8195] = "emSpace"; + CharacterCodes[CharacterCodes["threePerEmSpace"] = 8196] = "threePerEmSpace"; + CharacterCodes[CharacterCodes["fourPerEmSpace"] = 8197] = "fourPerEmSpace"; + CharacterCodes[CharacterCodes["sixPerEmSpace"] = 8198] = "sixPerEmSpace"; + CharacterCodes[CharacterCodes["figureSpace"] = 8199] = "figureSpace"; + CharacterCodes[CharacterCodes["punctuationSpace"] = 8200] = "punctuationSpace"; + CharacterCodes[CharacterCodes["thinSpace"] = 8201] = "thinSpace"; + CharacterCodes[CharacterCodes["hairSpace"] = 8202] = "hairSpace"; + CharacterCodes[CharacterCodes["zeroWidthSpace"] = 8203] = "zeroWidthSpace"; + CharacterCodes[CharacterCodes["narrowNoBreakSpace"] = 8239] = "narrowNoBreakSpace"; + CharacterCodes[CharacterCodes["ideographicSpace"] = 12288] = "ideographicSpace"; + CharacterCodes[CharacterCodes["mathematicalSpace"] = 8287] = "mathematicalSpace"; + CharacterCodes[CharacterCodes["ogham"] = 5760] = "ogham"; + CharacterCodes[CharacterCodes["_"] = 95] = "_"; + CharacterCodes[CharacterCodes["$"] = 36] = "$"; + CharacterCodes[CharacterCodes["_0"] = 48] = "_0"; + CharacterCodes[CharacterCodes["_1"] = 49] = "_1"; + CharacterCodes[CharacterCodes["_2"] = 50] = "_2"; + CharacterCodes[CharacterCodes["_3"] = 51] = "_3"; + CharacterCodes[CharacterCodes["_4"] = 52] = "_4"; + CharacterCodes[CharacterCodes["_5"] = 53] = "_5"; + CharacterCodes[CharacterCodes["_6"] = 54] = "_6"; + CharacterCodes[CharacterCodes["_7"] = 55] = "_7"; + CharacterCodes[CharacterCodes["_8"] = 56] = "_8"; + CharacterCodes[CharacterCodes["_9"] = 57] = "_9"; + CharacterCodes[CharacterCodes["a"] = 97] = "a"; + CharacterCodes[CharacterCodes["b"] = 98] = "b"; + CharacterCodes[CharacterCodes["c"] = 99] = "c"; + CharacterCodes[CharacterCodes["d"] = 100] = "d"; + CharacterCodes[CharacterCodes["e"] = 101] = "e"; + CharacterCodes[CharacterCodes["f"] = 102] = "f"; + CharacterCodes[CharacterCodes["g"] = 103] = "g"; + CharacterCodes[CharacterCodes["h"] = 104] = "h"; + CharacterCodes[CharacterCodes["i"] = 105] = "i"; + CharacterCodes[CharacterCodes["j"] = 106] = "j"; + CharacterCodes[CharacterCodes["k"] = 107] = "k"; + CharacterCodes[CharacterCodes["l"] = 108] = "l"; + CharacterCodes[CharacterCodes["m"] = 109] = "m"; + CharacterCodes[CharacterCodes["n"] = 110] = "n"; + CharacterCodes[CharacterCodes["o"] = 111] = "o"; + CharacterCodes[CharacterCodes["p"] = 112] = "p"; + CharacterCodes[CharacterCodes["q"] = 113] = "q"; + CharacterCodes[CharacterCodes["r"] = 114] = "r"; + CharacterCodes[CharacterCodes["s"] = 115] = "s"; + CharacterCodes[CharacterCodes["t"] = 116] = "t"; + CharacterCodes[CharacterCodes["u"] = 117] = "u"; + CharacterCodes[CharacterCodes["v"] = 118] = "v"; + CharacterCodes[CharacterCodes["w"] = 119] = "w"; + CharacterCodes[CharacterCodes["x"] = 120] = "x"; + CharacterCodes[CharacterCodes["y"] = 121] = "y"; + CharacterCodes[CharacterCodes["z"] = 122] = "z"; + CharacterCodes[CharacterCodes["A"] = 65] = "A"; + CharacterCodes[CharacterCodes["B"] = 66] = "B"; + CharacterCodes[CharacterCodes["C"] = 67] = "C"; + CharacterCodes[CharacterCodes["D"] = 68] = "D"; + CharacterCodes[CharacterCodes["E"] = 69] = "E"; + CharacterCodes[CharacterCodes["F"] = 70] = "F"; + CharacterCodes[CharacterCodes["G"] = 71] = "G"; + CharacterCodes[CharacterCodes["H"] = 72] = "H"; + CharacterCodes[CharacterCodes["I"] = 73] = "I"; + CharacterCodes[CharacterCodes["J"] = 74] = "J"; + CharacterCodes[CharacterCodes["K"] = 75] = "K"; + CharacterCodes[CharacterCodes["L"] = 76] = "L"; + CharacterCodes[CharacterCodes["M"] = 77] = "M"; + CharacterCodes[CharacterCodes["N"] = 78] = "N"; + CharacterCodes[CharacterCodes["O"] = 79] = "O"; + CharacterCodes[CharacterCodes["P"] = 80] = "P"; + CharacterCodes[CharacterCodes["Q"] = 81] = "Q"; + CharacterCodes[CharacterCodes["R"] = 82] = "R"; + CharacterCodes[CharacterCodes["S"] = 83] = "S"; + CharacterCodes[CharacterCodes["T"] = 84] = "T"; + CharacterCodes[CharacterCodes["U"] = 85] = "U"; + CharacterCodes[CharacterCodes["V"] = 86] = "V"; + CharacterCodes[CharacterCodes["W"] = 87] = "W"; + CharacterCodes[CharacterCodes["X"] = 88] = "X"; + CharacterCodes[CharacterCodes["Y"] = 89] = "Y"; + CharacterCodes[CharacterCodes["Z"] = 90] = "Z"; + CharacterCodes[CharacterCodes["ampersand"] = 38] = "ampersand"; + CharacterCodes[CharacterCodes["asterisk"] = 42] = "asterisk"; + CharacterCodes[CharacterCodes["at"] = 64] = "at"; + CharacterCodes[CharacterCodes["backslash"] = 92] = "backslash"; + CharacterCodes[CharacterCodes["backtick"] = 96] = "backtick"; + CharacterCodes[CharacterCodes["bar"] = 124] = "bar"; + CharacterCodes[CharacterCodes["caret"] = 94] = "caret"; + CharacterCodes[CharacterCodes["closeBrace"] = 125] = "closeBrace"; + CharacterCodes[CharacterCodes["closeBracket"] = 93] = "closeBracket"; + CharacterCodes[CharacterCodes["closeParen"] = 41] = "closeParen"; + CharacterCodes[CharacterCodes["colon"] = 58] = "colon"; + CharacterCodes[CharacterCodes["comma"] = 44] = "comma"; + CharacterCodes[CharacterCodes["dot"] = 46] = "dot"; + CharacterCodes[CharacterCodes["doubleQuote"] = 34] = "doubleQuote"; + CharacterCodes[CharacterCodes["equals"] = 61] = "equals"; + CharacterCodes[CharacterCodes["exclamation"] = 33] = "exclamation"; + CharacterCodes[CharacterCodes["greaterThan"] = 62] = "greaterThan"; + CharacterCodes[CharacterCodes["hash"] = 35] = "hash"; + CharacterCodes[CharacterCodes["lessThan"] = 60] = "lessThan"; + CharacterCodes[CharacterCodes["minus"] = 45] = "minus"; + CharacterCodes[CharacterCodes["openBrace"] = 123] = "openBrace"; + CharacterCodes[CharacterCodes["openBracket"] = 91] = "openBracket"; + CharacterCodes[CharacterCodes["openParen"] = 40] = "openParen"; + CharacterCodes[CharacterCodes["percent"] = 37] = "percent"; + CharacterCodes[CharacterCodes["plus"] = 43] = "plus"; + CharacterCodes[CharacterCodes["question"] = 63] = "question"; + CharacterCodes[CharacterCodes["semicolon"] = 59] = "semicolon"; + CharacterCodes[CharacterCodes["singleQuote"] = 39] = "singleQuote"; + CharacterCodes[CharacterCodes["slash"] = 47] = "slash"; + CharacterCodes[CharacterCodes["tilde"] = 126] = "tilde"; + CharacterCodes[CharacterCodes["backspace"] = 8] = "backspace"; + CharacterCodes[CharacterCodes["formFeed"] = 12] = "formFeed"; + CharacterCodes[CharacterCodes["byteOrderMark"] = 65279] = "byteOrderMark"; + CharacterCodes[CharacterCodes["tab"] = 9] = "tab"; + CharacterCodes[CharacterCodes["verticalTab"] = 11] = "verticalTab"; + })(CharacterCodes = ts.CharacterCodes || (ts.CharacterCodes = {})); + var Extension; + (function (Extension) { + Extension["Ts"] = ".ts"; + Extension["Tsx"] = ".tsx"; + Extension["Dts"] = ".d.ts"; + Extension["Js"] = ".js"; + Extension["Jsx"] = ".jsx"; + Extension["Json"] = ".json"; + Extension["TsBuildInfo"] = ".tsbuildinfo"; + })(Extension = ts.Extension || (ts.Extension = {})); + /* @internal */ + var TransformFlags; + (function (TransformFlags) { + TransformFlags[TransformFlags["None"] = 0] = "None"; + // Facts + // - Flags used to indicate that a node or subtree contains syntax that requires transformation. + TransformFlags[TransformFlags["ContainsTypeScript"] = 1] = "ContainsTypeScript"; + TransformFlags[TransformFlags["ContainsJsx"] = 2] = "ContainsJsx"; + TransformFlags[TransformFlags["ContainsESNext"] = 4] = "ContainsESNext"; + TransformFlags[TransformFlags["ContainsES2020"] = 8] = "ContainsES2020"; + TransformFlags[TransformFlags["ContainsES2019"] = 16] = "ContainsES2019"; + TransformFlags[TransformFlags["ContainsES2018"] = 32] = "ContainsES2018"; + TransformFlags[TransformFlags["ContainsES2017"] = 64] = "ContainsES2017"; + TransformFlags[TransformFlags["ContainsES2016"] = 128] = "ContainsES2016"; + TransformFlags[TransformFlags["ContainsES2015"] = 256] = "ContainsES2015"; + TransformFlags[TransformFlags["ContainsGenerator"] = 512] = "ContainsGenerator"; + TransformFlags[TransformFlags["ContainsDestructuringAssignment"] = 1024] = "ContainsDestructuringAssignment"; + // Markers + // - Flags used to indicate that a subtree contains a specific transformation. + TransformFlags[TransformFlags["ContainsTypeScriptClassSyntax"] = 2048] = "ContainsTypeScriptClassSyntax"; + TransformFlags[TransformFlags["ContainsLexicalThis"] = 4096] = "ContainsLexicalThis"; + TransformFlags[TransformFlags["ContainsRestOrSpread"] = 8192] = "ContainsRestOrSpread"; + TransformFlags[TransformFlags["ContainsObjectRestOrSpread"] = 16384] = "ContainsObjectRestOrSpread"; + TransformFlags[TransformFlags["ContainsComputedPropertyName"] = 32768] = "ContainsComputedPropertyName"; + TransformFlags[TransformFlags["ContainsBlockScopedBinding"] = 65536] = "ContainsBlockScopedBinding"; + TransformFlags[TransformFlags["ContainsBindingPattern"] = 131072] = "ContainsBindingPattern"; + TransformFlags[TransformFlags["ContainsYield"] = 262144] = "ContainsYield"; + TransformFlags[TransformFlags["ContainsAwait"] = 524288] = "ContainsAwait"; + TransformFlags[TransformFlags["ContainsHoistedDeclarationOrCompletion"] = 1048576] = "ContainsHoistedDeclarationOrCompletion"; + TransformFlags[TransformFlags["ContainsDynamicImport"] = 2097152] = "ContainsDynamicImport"; + TransformFlags[TransformFlags["ContainsClassFields"] = 4194304] = "ContainsClassFields"; + // Please leave this as 1 << 29. + // It is the maximum bit we can set before we outgrow the size of a v8 small integer (SMI) on an x86 system. + // It is a good reminder of how much room we have left + TransformFlags[TransformFlags["HasComputedFlags"] = 536870912] = "HasComputedFlags"; + // Assertions + // - Bitmasks that are used to assert facts about the syntax of a node and its subtree. + TransformFlags[TransformFlags["AssertTypeScript"] = 1] = "AssertTypeScript"; + TransformFlags[TransformFlags["AssertJsx"] = 2] = "AssertJsx"; + TransformFlags[TransformFlags["AssertESNext"] = 4] = "AssertESNext"; + TransformFlags[TransformFlags["AssertES2020"] = 8] = "AssertES2020"; + TransformFlags[TransformFlags["AssertES2019"] = 16] = "AssertES2019"; + TransformFlags[TransformFlags["AssertES2018"] = 32] = "AssertES2018"; + TransformFlags[TransformFlags["AssertES2017"] = 64] = "AssertES2017"; + TransformFlags[TransformFlags["AssertES2016"] = 128] = "AssertES2016"; + TransformFlags[TransformFlags["AssertES2015"] = 256] = "AssertES2015"; + TransformFlags[TransformFlags["AssertGenerator"] = 512] = "AssertGenerator"; + TransformFlags[TransformFlags["AssertDestructuringAssignment"] = 1024] = "AssertDestructuringAssignment"; + // Scope Exclusions + // - Bitmasks that exclude flags from propagating out of a specific context + // into the subtree flags of their container. + TransformFlags[TransformFlags["OuterExpressionExcludes"] = 536870912] = "OuterExpressionExcludes"; + TransformFlags[TransformFlags["PropertyAccessExcludes"] = 536870912] = "PropertyAccessExcludes"; + TransformFlags[TransformFlags["NodeExcludes"] = 536870912] = "NodeExcludes"; + TransformFlags[TransformFlags["ArrowFunctionExcludes"] = 538920960] = "ArrowFunctionExcludes"; + TransformFlags[TransformFlags["FunctionExcludes"] = 538925056] = "FunctionExcludes"; + TransformFlags[TransformFlags["ConstructorExcludes"] = 538923008] = "ConstructorExcludes"; + TransformFlags[TransformFlags["MethodOrAccessorExcludes"] = 538923008] = "MethodOrAccessorExcludes"; + TransformFlags[TransformFlags["PropertyExcludes"] = 536875008] = "PropertyExcludes"; + TransformFlags[TransformFlags["ClassExcludes"] = 536905728] = "ClassExcludes"; + TransformFlags[TransformFlags["ModuleExcludes"] = 537991168] = "ModuleExcludes"; + TransformFlags[TransformFlags["TypeExcludes"] = -2] = "TypeExcludes"; + TransformFlags[TransformFlags["ObjectLiteralExcludes"] = 536922112] = "ObjectLiteralExcludes"; + TransformFlags[TransformFlags["ArrayLiteralOrCallOrNewExcludes"] = 536879104] = "ArrayLiteralOrCallOrNewExcludes"; + TransformFlags[TransformFlags["VariableDeclarationListExcludes"] = 537018368] = "VariableDeclarationListExcludes"; + TransformFlags[TransformFlags["ParameterExcludes"] = 536870912] = "ParameterExcludes"; + TransformFlags[TransformFlags["CatchClauseExcludes"] = 536887296] = "CatchClauseExcludes"; + TransformFlags[TransformFlags["BindingPatternExcludes"] = 536879104] = "BindingPatternExcludes"; + // Propagating flags + // - Bitmasks for flags that should propagate from a child + TransformFlags[TransformFlags["PropertyNamePropagatingFlags"] = 4096] = "PropertyNamePropagatingFlags"; + // Masks + // - Additional bitmasks + })(TransformFlags = ts.TransformFlags || (ts.TransformFlags = {})); + var EmitFlags; + (function (EmitFlags) { + EmitFlags[EmitFlags["None"] = 0] = "None"; + EmitFlags[EmitFlags["SingleLine"] = 1] = "SingleLine"; + EmitFlags[EmitFlags["AdviseOnEmitNode"] = 2] = "AdviseOnEmitNode"; + EmitFlags[EmitFlags["NoSubstitution"] = 4] = "NoSubstitution"; + EmitFlags[EmitFlags["CapturesThis"] = 8] = "CapturesThis"; + EmitFlags[EmitFlags["NoLeadingSourceMap"] = 16] = "NoLeadingSourceMap"; + EmitFlags[EmitFlags["NoTrailingSourceMap"] = 32] = "NoTrailingSourceMap"; + EmitFlags[EmitFlags["NoSourceMap"] = 48] = "NoSourceMap"; + EmitFlags[EmitFlags["NoNestedSourceMaps"] = 64] = "NoNestedSourceMaps"; + EmitFlags[EmitFlags["NoTokenLeadingSourceMaps"] = 128] = "NoTokenLeadingSourceMaps"; + EmitFlags[EmitFlags["NoTokenTrailingSourceMaps"] = 256] = "NoTokenTrailingSourceMaps"; + EmitFlags[EmitFlags["NoTokenSourceMaps"] = 384] = "NoTokenSourceMaps"; + EmitFlags[EmitFlags["NoLeadingComments"] = 512] = "NoLeadingComments"; + EmitFlags[EmitFlags["NoTrailingComments"] = 1024] = "NoTrailingComments"; + EmitFlags[EmitFlags["NoComments"] = 1536] = "NoComments"; + EmitFlags[EmitFlags["NoNestedComments"] = 2048] = "NoNestedComments"; + EmitFlags[EmitFlags["HelperName"] = 4096] = "HelperName"; + EmitFlags[EmitFlags["ExportName"] = 8192] = "ExportName"; + EmitFlags[EmitFlags["LocalName"] = 16384] = "LocalName"; + EmitFlags[EmitFlags["InternalName"] = 32768] = "InternalName"; + EmitFlags[EmitFlags["Indented"] = 65536] = "Indented"; + EmitFlags[EmitFlags["NoIndentation"] = 131072] = "NoIndentation"; + EmitFlags[EmitFlags["AsyncFunctionBody"] = 262144] = "AsyncFunctionBody"; + EmitFlags[EmitFlags["ReuseTempVariableScope"] = 524288] = "ReuseTempVariableScope"; + EmitFlags[EmitFlags["CustomPrologue"] = 1048576] = "CustomPrologue"; + EmitFlags[EmitFlags["NoHoisting"] = 2097152] = "NoHoisting"; + EmitFlags[EmitFlags["HasEndOfDeclarationMarker"] = 4194304] = "HasEndOfDeclarationMarker"; + EmitFlags[EmitFlags["Iterator"] = 8388608] = "Iterator"; + EmitFlags[EmitFlags["NoAsciiEscaping"] = 16777216] = "NoAsciiEscaping"; + /*@internal*/ EmitFlags[EmitFlags["TypeScriptClassWrapper"] = 33554432] = "TypeScriptClassWrapper"; + /*@internal*/ EmitFlags[EmitFlags["NeverApplyImportHelper"] = 67108864] = "NeverApplyImportHelper"; + /*@internal*/ EmitFlags[EmitFlags["IgnoreSourceNewlines"] = 134217728] = "IgnoreSourceNewlines"; + })(EmitFlags = ts.EmitFlags || (ts.EmitFlags = {})); + /** + * Used by the checker, this enum keeps track of external emit helpers that should be type + * checked. + */ + /* @internal */ + var ExternalEmitHelpers; + (function (ExternalEmitHelpers) { + ExternalEmitHelpers[ExternalEmitHelpers["Extends"] = 1] = "Extends"; + ExternalEmitHelpers[ExternalEmitHelpers["Assign"] = 2] = "Assign"; + ExternalEmitHelpers[ExternalEmitHelpers["Rest"] = 4] = "Rest"; + ExternalEmitHelpers[ExternalEmitHelpers["Decorate"] = 8] = "Decorate"; + ExternalEmitHelpers[ExternalEmitHelpers["Metadata"] = 16] = "Metadata"; + ExternalEmitHelpers[ExternalEmitHelpers["Param"] = 32] = "Param"; + ExternalEmitHelpers[ExternalEmitHelpers["Awaiter"] = 64] = "Awaiter"; + ExternalEmitHelpers[ExternalEmitHelpers["Generator"] = 128] = "Generator"; + ExternalEmitHelpers[ExternalEmitHelpers["Values"] = 256] = "Values"; + ExternalEmitHelpers[ExternalEmitHelpers["Read"] = 512] = "Read"; + ExternalEmitHelpers[ExternalEmitHelpers["Spread"] = 1024] = "Spread"; + ExternalEmitHelpers[ExternalEmitHelpers["SpreadArrays"] = 2048] = "SpreadArrays"; + ExternalEmitHelpers[ExternalEmitHelpers["Await"] = 4096] = "Await"; + ExternalEmitHelpers[ExternalEmitHelpers["AsyncGenerator"] = 8192] = "AsyncGenerator"; + ExternalEmitHelpers[ExternalEmitHelpers["AsyncDelegator"] = 16384] = "AsyncDelegator"; + ExternalEmitHelpers[ExternalEmitHelpers["AsyncValues"] = 32768] = "AsyncValues"; + ExternalEmitHelpers[ExternalEmitHelpers["ExportStar"] = 65536] = "ExportStar"; + ExternalEmitHelpers[ExternalEmitHelpers["MakeTemplateObject"] = 131072] = "MakeTemplateObject"; + ExternalEmitHelpers[ExternalEmitHelpers["ClassPrivateFieldGet"] = 262144] = "ClassPrivateFieldGet"; + ExternalEmitHelpers[ExternalEmitHelpers["ClassPrivateFieldSet"] = 524288] = "ClassPrivateFieldSet"; + ExternalEmitHelpers[ExternalEmitHelpers["CreateBinding"] = 1048576] = "CreateBinding"; + ExternalEmitHelpers[ExternalEmitHelpers["FirstEmitHelper"] = 1] = "FirstEmitHelper"; + ExternalEmitHelpers[ExternalEmitHelpers["LastEmitHelper"] = 1048576] = "LastEmitHelper"; + // Helpers included by ES2015 for..of + ExternalEmitHelpers[ExternalEmitHelpers["ForOfIncludes"] = 256] = "ForOfIncludes"; + // Helpers included by ES2017 for..await..of + ExternalEmitHelpers[ExternalEmitHelpers["ForAwaitOfIncludes"] = 32768] = "ForAwaitOfIncludes"; + // Helpers included by ES2017 async generators + ExternalEmitHelpers[ExternalEmitHelpers["AsyncGeneratorIncludes"] = 12288] = "AsyncGeneratorIncludes"; + // Helpers included by yield* in ES2017 async generators + ExternalEmitHelpers[ExternalEmitHelpers["AsyncDelegatorIncludes"] = 53248] = "AsyncDelegatorIncludes"; + // Helpers included by ES2015 spread + ExternalEmitHelpers[ExternalEmitHelpers["SpreadIncludes"] = 1536] = "SpreadIncludes"; + })(ExternalEmitHelpers = ts.ExternalEmitHelpers || (ts.ExternalEmitHelpers = {})); + var EmitHint; + (function (EmitHint) { + EmitHint[EmitHint["SourceFile"] = 0] = "SourceFile"; + EmitHint[EmitHint["Expression"] = 1] = "Expression"; + EmitHint[EmitHint["IdentifierName"] = 2] = "IdentifierName"; + EmitHint[EmitHint["MappedTypeParameter"] = 3] = "MappedTypeParameter"; + EmitHint[EmitHint["Unspecified"] = 4] = "Unspecified"; + EmitHint[EmitHint["EmbeddedStatement"] = 5] = "EmbeddedStatement"; + EmitHint[EmitHint["JsxAttributeValue"] = 6] = "JsxAttributeValue"; + })(EmitHint = ts.EmitHint || (ts.EmitHint = {})); + /* @internal */ + var LexicalEnvironmentFlags; + (function (LexicalEnvironmentFlags) { + LexicalEnvironmentFlags[LexicalEnvironmentFlags["None"] = 0] = "None"; + LexicalEnvironmentFlags[LexicalEnvironmentFlags["InParameters"] = 1] = "InParameters"; + LexicalEnvironmentFlags[LexicalEnvironmentFlags["VariablesHoistedInParameters"] = 2] = "VariablesHoistedInParameters"; // a temp variable was hoisted while visiting a parameter list + })(LexicalEnvironmentFlags = ts.LexicalEnvironmentFlags || (ts.LexicalEnvironmentFlags = {})); + /*@internal*/ + var BundleFileSectionKind; + (function (BundleFileSectionKind) { + BundleFileSectionKind["Prologue"] = "prologue"; + BundleFileSectionKind["EmitHelpers"] = "emitHelpers"; + BundleFileSectionKind["NoDefaultLib"] = "no-default-lib"; + BundleFileSectionKind["Reference"] = "reference"; + BundleFileSectionKind["Type"] = "type"; + BundleFileSectionKind["Lib"] = "lib"; + BundleFileSectionKind["Prepend"] = "prepend"; + BundleFileSectionKind["Text"] = "text"; + BundleFileSectionKind["Internal"] = "internal"; + // comments? + })(BundleFileSectionKind = ts.BundleFileSectionKind || (ts.BundleFileSectionKind = {})); + var ListFormat; + (function (ListFormat) { + ListFormat[ListFormat["None"] = 0] = "None"; + // Line separators + ListFormat[ListFormat["SingleLine"] = 0] = "SingleLine"; + ListFormat[ListFormat["MultiLine"] = 1] = "MultiLine"; + ListFormat[ListFormat["PreserveLines"] = 2] = "PreserveLines"; + ListFormat[ListFormat["LinesMask"] = 3] = "LinesMask"; + // Delimiters + ListFormat[ListFormat["NotDelimited"] = 0] = "NotDelimited"; + ListFormat[ListFormat["BarDelimited"] = 4] = "BarDelimited"; + ListFormat[ListFormat["AmpersandDelimited"] = 8] = "AmpersandDelimited"; + ListFormat[ListFormat["CommaDelimited"] = 16] = "CommaDelimited"; + ListFormat[ListFormat["AsteriskDelimited"] = 32] = "AsteriskDelimited"; + ListFormat[ListFormat["DelimitersMask"] = 60] = "DelimitersMask"; + ListFormat[ListFormat["AllowTrailingComma"] = 64] = "AllowTrailingComma"; + // Whitespace + ListFormat[ListFormat["Indented"] = 128] = "Indented"; + ListFormat[ListFormat["SpaceBetweenBraces"] = 256] = "SpaceBetweenBraces"; + ListFormat[ListFormat["SpaceBetweenSiblings"] = 512] = "SpaceBetweenSiblings"; + // Brackets/Braces + ListFormat[ListFormat["Braces"] = 1024] = "Braces"; + ListFormat[ListFormat["Parenthesis"] = 2048] = "Parenthesis"; + ListFormat[ListFormat["AngleBrackets"] = 4096] = "AngleBrackets"; + ListFormat[ListFormat["SquareBrackets"] = 8192] = "SquareBrackets"; + ListFormat[ListFormat["BracketsMask"] = 15360] = "BracketsMask"; + ListFormat[ListFormat["OptionalIfUndefined"] = 16384] = "OptionalIfUndefined"; + ListFormat[ListFormat["OptionalIfEmpty"] = 32768] = "OptionalIfEmpty"; + ListFormat[ListFormat["Optional"] = 49152] = "Optional"; + // Other + ListFormat[ListFormat["PreferNewLine"] = 65536] = "PreferNewLine"; + ListFormat[ListFormat["NoTrailingNewLine"] = 131072] = "NoTrailingNewLine"; + ListFormat[ListFormat["NoInterveningComments"] = 262144] = "NoInterveningComments"; + ListFormat[ListFormat["NoSpaceIfEmpty"] = 524288] = "NoSpaceIfEmpty"; + ListFormat[ListFormat["SingleElement"] = 1048576] = "SingleElement"; + ListFormat[ListFormat["SpaceAfterList"] = 2097152] = "SpaceAfterList"; + // Precomputed Formats + ListFormat[ListFormat["Modifiers"] = 262656] = "Modifiers"; + ListFormat[ListFormat["HeritageClauses"] = 512] = "HeritageClauses"; + ListFormat[ListFormat["SingleLineTypeLiteralMembers"] = 768] = "SingleLineTypeLiteralMembers"; + ListFormat[ListFormat["MultiLineTypeLiteralMembers"] = 32897] = "MultiLineTypeLiteralMembers"; + ListFormat[ListFormat["TupleTypeElements"] = 528] = "TupleTypeElements"; + ListFormat[ListFormat["UnionTypeConstituents"] = 516] = "UnionTypeConstituents"; + ListFormat[ListFormat["IntersectionTypeConstituents"] = 520] = "IntersectionTypeConstituents"; + ListFormat[ListFormat["ObjectBindingPatternElements"] = 525136] = "ObjectBindingPatternElements"; + ListFormat[ListFormat["ArrayBindingPatternElements"] = 524880] = "ArrayBindingPatternElements"; + ListFormat[ListFormat["ObjectLiteralExpressionProperties"] = 526226] = "ObjectLiteralExpressionProperties"; + ListFormat[ListFormat["ArrayLiteralExpressionElements"] = 8914] = "ArrayLiteralExpressionElements"; + ListFormat[ListFormat["CommaListElements"] = 528] = "CommaListElements"; + ListFormat[ListFormat["CallExpressionArguments"] = 2576] = "CallExpressionArguments"; + ListFormat[ListFormat["NewExpressionArguments"] = 18960] = "NewExpressionArguments"; + ListFormat[ListFormat["TemplateExpressionSpans"] = 262144] = "TemplateExpressionSpans"; + ListFormat[ListFormat["SingleLineBlockStatements"] = 768] = "SingleLineBlockStatements"; + ListFormat[ListFormat["MultiLineBlockStatements"] = 129] = "MultiLineBlockStatements"; + ListFormat[ListFormat["VariableDeclarationList"] = 528] = "VariableDeclarationList"; + ListFormat[ListFormat["SingleLineFunctionBodyStatements"] = 768] = "SingleLineFunctionBodyStatements"; + ListFormat[ListFormat["MultiLineFunctionBodyStatements"] = 1] = "MultiLineFunctionBodyStatements"; + ListFormat[ListFormat["ClassHeritageClauses"] = 0] = "ClassHeritageClauses"; + ListFormat[ListFormat["ClassMembers"] = 129] = "ClassMembers"; + ListFormat[ListFormat["InterfaceMembers"] = 129] = "InterfaceMembers"; + ListFormat[ListFormat["EnumMembers"] = 145] = "EnumMembers"; + ListFormat[ListFormat["CaseBlockClauses"] = 129] = "CaseBlockClauses"; + ListFormat[ListFormat["NamedImportsOrExportsElements"] = 525136] = "NamedImportsOrExportsElements"; + ListFormat[ListFormat["JsxElementOrFragmentChildren"] = 262144] = "JsxElementOrFragmentChildren"; + ListFormat[ListFormat["JsxElementAttributes"] = 262656] = "JsxElementAttributes"; + ListFormat[ListFormat["CaseOrDefaultClauseStatements"] = 163969] = "CaseOrDefaultClauseStatements"; + ListFormat[ListFormat["HeritageClauseTypes"] = 528] = "HeritageClauseTypes"; + ListFormat[ListFormat["SourceFileStatements"] = 131073] = "SourceFileStatements"; + ListFormat[ListFormat["Decorators"] = 2146305] = "Decorators"; + ListFormat[ListFormat["TypeArguments"] = 53776] = "TypeArguments"; + ListFormat[ListFormat["TypeParameters"] = 53776] = "TypeParameters"; + ListFormat[ListFormat["Parameters"] = 2576] = "Parameters"; + ListFormat[ListFormat["IndexSignatureParameters"] = 8848] = "IndexSignatureParameters"; + ListFormat[ListFormat["JSDocComment"] = 33] = "JSDocComment"; + })(ListFormat = ts.ListFormat || (ts.ListFormat = {})); + /* @internal */ + var PragmaKindFlags; + (function (PragmaKindFlags) { + PragmaKindFlags[PragmaKindFlags["None"] = 0] = "None"; + /** + * Triple slash comment of the form + * /// + */ + PragmaKindFlags[PragmaKindFlags["TripleSlashXML"] = 1] = "TripleSlashXML"; + /** + * Single line comment of the form + * // @pragma-name argval1 argval2 + * or + * /// @pragma-name argval1 argval2 + */ + PragmaKindFlags[PragmaKindFlags["SingleLine"] = 2] = "SingleLine"; + /** + * Multiline non-jsdoc pragma of the form + * /* @pragma-name argval1 argval2 * / + */ + PragmaKindFlags[PragmaKindFlags["MultiLine"] = 4] = "MultiLine"; + PragmaKindFlags[PragmaKindFlags["All"] = 7] = "All"; + PragmaKindFlags[PragmaKindFlags["Default"] = 7] = "Default"; + })(PragmaKindFlags = ts.PragmaKindFlags || (ts.PragmaKindFlags = {})); + // While not strictly a type, this is here because `PragmaMap` needs to be here to be used with `SourceFile`, and we don't + // fancy effectively defining it twice, once in value-space and once in type-space + /* @internal */ + ts.commentPragmas = { + "reference": { + args: [ + { name: "types", optional: true, captureSpan: true }, + { name: "lib", optional: true, captureSpan: true }, + { name: "path", optional: true, captureSpan: true }, + { name: "no-default-lib", optional: true } + ], + kind: 1 /* TripleSlashXML */ + }, + "amd-dependency": { + args: [{ name: "path" }, { name: "name", optional: true }], + kind: 1 /* TripleSlashXML */ + }, + "amd-module": { + args: [{ name: "name" }], + kind: 1 /* TripleSlashXML */ + }, + "ts-check": { + kind: 2 /* SingleLine */ + }, + "ts-nocheck": { + kind: 2 /* SingleLine */ + }, + "jsx": { + args: [{ name: "factory" }], + kind: 4 /* MultiLine */ + }, + }; +})(ts || (ts = {})); +var ts; +(function (ts) { + /** + * djb2 hashing algorithm + * http://www.cse.yorku.ca/~oz/hash.html + */ + /* @internal */ + function generateDjb2Hash(data) { + var acc = 5381; + for (var i = 0; i < data.length; i++) { + acc = ((acc << 5) + acc) + data.charCodeAt(i); + } + return acc.toString(); + } + ts.generateDjb2Hash = generateDjb2Hash; + /** + * Set a high stack trace limit to provide more information in case of an error. + * Called for command-line and server use cases. + * Not called if TypeScript is used as a library. + */ + /* @internal */ + function setStackTraceLimit() { + if (Error.stackTraceLimit < 100) { // Also tests that we won't set the property if it doesn't exist. + Error.stackTraceLimit = 100; + } + } + ts.setStackTraceLimit = setStackTraceLimit; + var FileWatcherEventKind; + (function (FileWatcherEventKind) { + FileWatcherEventKind[FileWatcherEventKind["Created"] = 0] = "Created"; + FileWatcherEventKind[FileWatcherEventKind["Changed"] = 1] = "Changed"; + FileWatcherEventKind[FileWatcherEventKind["Deleted"] = 2] = "Deleted"; + })(FileWatcherEventKind = ts.FileWatcherEventKind || (ts.FileWatcherEventKind = {})); + /* @internal */ + var PollingInterval; + (function (PollingInterval) { + PollingInterval[PollingInterval["High"] = 2000] = "High"; + PollingInterval[PollingInterval["Medium"] = 500] = "Medium"; + PollingInterval[PollingInterval["Low"] = 250] = "Low"; + })(PollingInterval = ts.PollingInterval || (ts.PollingInterval = {})); + /* @internal */ + ts.missingFileModifiedTime = new Date(0); // Any subsequent modification will occur after this time + function createPollingIntervalBasedLevels(levels) { + var _a; + return _a = {}, + _a[PollingInterval.Low] = levels.Low, + _a[PollingInterval.Medium] = levels.Medium, + _a[PollingInterval.High] = levels.High, + _a; + } + var defaultChunkLevels = { Low: 32, Medium: 64, High: 256 }; + var pollingChunkSize = createPollingIntervalBasedLevels(defaultChunkLevels); + /* @internal */ + ts.unchangedPollThresholds = createPollingIntervalBasedLevels(defaultChunkLevels); + /* @internal */ + function setCustomPollingValues(system) { + if (!system.getEnvironmentVariable) { + return; + } + var pollingIntervalChanged = setCustomLevels("TSC_WATCH_POLLINGINTERVAL", PollingInterval); + pollingChunkSize = getCustomPollingBasedLevels("TSC_WATCH_POLLINGCHUNKSIZE", defaultChunkLevels) || pollingChunkSize; + ts.unchangedPollThresholds = getCustomPollingBasedLevels("TSC_WATCH_UNCHANGEDPOLLTHRESHOLDS", defaultChunkLevels) || ts.unchangedPollThresholds; + function getLevel(envVar, level) { + return system.getEnvironmentVariable(envVar + "_" + level.toUpperCase()); + } + function getCustomLevels(baseVariable) { + var customLevels; + setCustomLevel("Low"); + setCustomLevel("Medium"); + setCustomLevel("High"); + return customLevels; + function setCustomLevel(level) { + var customLevel = getLevel(baseVariable, level); + if (customLevel) { + (customLevels || (customLevels = {}))[level] = Number(customLevel); + } + } + } + function setCustomLevels(baseVariable, levels) { + var customLevels = getCustomLevels(baseVariable); + if (customLevels) { + setLevel("Low"); + setLevel("Medium"); + setLevel("High"); + return true; + } + return false; + function setLevel(level) { + levels[level] = customLevels[level] || levels[level]; + } + } + function getCustomPollingBasedLevels(baseVariable, defaultLevels) { + var customLevels = getCustomLevels(baseVariable); + return (pollingIntervalChanged || customLevels) && + createPollingIntervalBasedLevels(customLevels ? __assign(__assign({}, defaultLevels), customLevels) : defaultLevels); + } + } + ts.setCustomPollingValues = setCustomPollingValues; + /* @internal */ + function createDynamicPriorityPollingWatchFile(host) { + var watchedFiles = []; + var changedFilesInLastPoll = []; + var lowPollingIntervalQueue = createPollingIntervalQueue(PollingInterval.Low); + var mediumPollingIntervalQueue = createPollingIntervalQueue(PollingInterval.Medium); + var highPollingIntervalQueue = createPollingIntervalQueue(PollingInterval.High); + return watchFile; + function watchFile(fileName, callback, defaultPollingInterval) { + var file = { + fileName: fileName, + callback: callback, + unchangedPolls: 0, + mtime: getModifiedTime(fileName) + }; + watchedFiles.push(file); + addToPollingIntervalQueue(file, defaultPollingInterval); + return { + close: function () { + file.isClosed = true; + // Remove from watchedFiles + ts.unorderedRemoveItem(watchedFiles, file); + // Do not update polling interval queue since that will happen as part of polling + } + }; + } + function createPollingIntervalQueue(pollingInterval) { + var queue = []; + queue.pollingInterval = pollingInterval; + queue.pollIndex = 0; + queue.pollScheduled = false; + return queue; + } + function pollPollingIntervalQueue(queue) { + queue.pollIndex = pollQueue(queue, queue.pollingInterval, queue.pollIndex, pollingChunkSize[queue.pollingInterval]); + // Set the next polling index and timeout + if (queue.length) { + scheduleNextPoll(queue.pollingInterval); + } + else { + ts.Debug.assert(queue.pollIndex === 0); + queue.pollScheduled = false; + } + } + function pollLowPollingIntervalQueue(queue) { + // Always poll complete list of changedFilesInLastPoll + pollQueue(changedFilesInLastPoll, PollingInterval.Low, /*pollIndex*/ 0, changedFilesInLastPoll.length); + // Finally do the actual polling of the queue + pollPollingIntervalQueue(queue); + // Schedule poll if there are files in changedFilesInLastPoll but no files in the actual queue + // as pollPollingIntervalQueue wont schedule for next poll + if (!queue.pollScheduled && changedFilesInLastPoll.length) { + scheduleNextPoll(PollingInterval.Low); + } + } + function pollQueue(queue, pollingInterval, pollIndex, chunkSize) { + // Max visit would be all elements of the queue + var needsVisit = queue.length; + var definedValueCopyToIndex = pollIndex; + for (var polled = 0; polled < chunkSize && needsVisit > 0; nextPollIndex(), needsVisit--) { + var watchedFile = queue[pollIndex]; + if (!watchedFile) { + continue; + } + else if (watchedFile.isClosed) { + queue[pollIndex] = undefined; + continue; + } + polled++; + var fileChanged = onWatchedFileStat(watchedFile, getModifiedTime(watchedFile.fileName)); + if (watchedFile.isClosed) { + // Closed watcher as part of callback + queue[pollIndex] = undefined; + } + else if (fileChanged) { + watchedFile.unchangedPolls = 0; + // Changed files go to changedFilesInLastPoll queue + if (queue !== changedFilesInLastPoll) { + queue[pollIndex] = undefined; + addChangedFileToLowPollingIntervalQueue(watchedFile); + } + } + else if (watchedFile.unchangedPolls !== ts.unchangedPollThresholds[pollingInterval]) { + watchedFile.unchangedPolls++; + } + else if (queue === changedFilesInLastPoll) { + // Restart unchangedPollCount for unchanged file and move to low polling interval queue + watchedFile.unchangedPolls = 1; + queue[pollIndex] = undefined; + addToPollingIntervalQueue(watchedFile, PollingInterval.Low); + } + else if (pollingInterval !== PollingInterval.High) { + watchedFile.unchangedPolls++; + queue[pollIndex] = undefined; + addToPollingIntervalQueue(watchedFile, pollingInterval === PollingInterval.Low ? PollingInterval.Medium : PollingInterval.High); + } + if (queue[pollIndex]) { + // Copy this file to the non hole location + if (definedValueCopyToIndex < pollIndex) { + queue[definedValueCopyToIndex] = watchedFile; + queue[pollIndex] = undefined; + } + definedValueCopyToIndex++; + } + } + // Return next poll index + return pollIndex; + function nextPollIndex() { + pollIndex++; + if (pollIndex === queue.length) { + if (definedValueCopyToIndex < pollIndex) { + // There are holes from nextDefinedValueIndex to end of queue, change queue size + queue.length = definedValueCopyToIndex; + } + pollIndex = 0; + definedValueCopyToIndex = 0; + } + } + } + function pollingIntervalQueue(pollingInterval) { + switch (pollingInterval) { + case PollingInterval.Low: + return lowPollingIntervalQueue; + case PollingInterval.Medium: + return mediumPollingIntervalQueue; + case PollingInterval.High: + return highPollingIntervalQueue; + } + } + function addToPollingIntervalQueue(file, pollingInterval) { + pollingIntervalQueue(pollingInterval).push(file); + scheduleNextPollIfNotAlreadyScheduled(pollingInterval); + } + function addChangedFileToLowPollingIntervalQueue(file) { + changedFilesInLastPoll.push(file); + scheduleNextPollIfNotAlreadyScheduled(PollingInterval.Low); + } + function scheduleNextPollIfNotAlreadyScheduled(pollingInterval) { + if (!pollingIntervalQueue(pollingInterval).pollScheduled) { + scheduleNextPoll(pollingInterval); + } + } + function scheduleNextPoll(pollingInterval) { + pollingIntervalQueue(pollingInterval).pollScheduled = host.setTimeout(pollingInterval === PollingInterval.Low ? pollLowPollingIntervalQueue : pollPollingIntervalQueue, pollingInterval, pollingIntervalQueue(pollingInterval)); + } + function getModifiedTime(fileName) { + return host.getModifiedTime(fileName) || ts.missingFileModifiedTime; + } + } + ts.createDynamicPriorityPollingWatchFile = createDynamicPriorityPollingWatchFile; + function createUseFsEventsOnParentDirectoryWatchFile(fsWatch, useCaseSensitiveFileNames) { + // One file can have multiple watchers + var fileWatcherCallbacks = ts.createMultiMap(); + var dirWatchers = ts.createMap(); + var toCanonicalName = ts.createGetCanonicalFileName(useCaseSensitiveFileNames); + return nonPollingWatchFile; + function nonPollingWatchFile(fileName, callback, _pollingInterval, fallbackOptions) { + var filePath = toCanonicalName(fileName); + fileWatcherCallbacks.add(filePath, callback); + var dirPath = ts.getDirectoryPath(filePath) || "."; + var watcher = dirWatchers.get(dirPath) || + createDirectoryWatcher(ts.getDirectoryPath(fileName) || ".", dirPath, fallbackOptions); + watcher.referenceCount++; + return { + close: function () { + if (watcher.referenceCount === 1) { + watcher.close(); + dirWatchers.delete(dirPath); + } + else { + watcher.referenceCount--; + } + fileWatcherCallbacks.remove(filePath, callback); + } + }; + } + function createDirectoryWatcher(dirName, dirPath, fallbackOptions) { + var watcher = fsWatch(dirName, 1 /* Directory */, function (_eventName, relativeFileName) { + // When files are deleted from disk, the triggered "rename" event would have a relativefileName of "undefined" + if (!ts.isString(relativeFileName)) { + return; + } + var fileName = ts.getNormalizedAbsolutePath(relativeFileName, dirName); + // Some applications save a working file via rename operations + var callbacks = fileName && fileWatcherCallbacks.get(toCanonicalName(fileName)); + if (callbacks) { + for (var _i = 0, callbacks_1 = callbacks; _i < callbacks_1.length; _i++) { + var fileCallback = callbacks_1[_i]; + fileCallback(fileName, FileWatcherEventKind.Changed); + } + } + }, + /*recursive*/ false, PollingInterval.Medium, fallbackOptions); + watcher.referenceCount = 0; + dirWatchers.set(dirPath, watcher); + return watcher; + } + } + /* @internal */ + function createSingleFileWatcherPerName(watchFile, useCaseSensitiveFileNames) { + var cache = ts.createMap(); + var callbacksCache = ts.createMultiMap(); + var toCanonicalFileName = ts.createGetCanonicalFileName(useCaseSensitiveFileNames); + return function (fileName, callback, pollingInterval, options) { + var path = toCanonicalFileName(fileName); + var existing = cache.get(path); + if (existing) { + existing.refCount++; + } + else { + cache.set(path, { + watcher: watchFile(fileName, function (fileName, eventKind) { return ts.forEach(callbacksCache.get(path), function (cb) { return cb(fileName, eventKind); }); }, pollingInterval, options), + refCount: 1 + }); + } + callbacksCache.add(path, callback); + return { + close: function () { + var watcher = ts.Debug.checkDefined(cache.get(path)); + callbacksCache.remove(path, callback); + watcher.refCount--; + if (watcher.refCount) + return; + cache.delete(path); + ts.closeFileWatcherOf(watcher); + } + }; + }; + } + ts.createSingleFileWatcherPerName = createSingleFileWatcherPerName; + /** + * Returns true if file status changed + */ + /*@internal*/ + function onWatchedFileStat(watchedFile, modifiedTime) { + var oldTime = watchedFile.mtime.getTime(); + var newTime = modifiedTime.getTime(); + if (oldTime !== newTime) { + watchedFile.mtime = modifiedTime; + watchedFile.callback(watchedFile.fileName, getFileWatcherEventKind(oldTime, newTime)); + return true; + } + return false; + } + ts.onWatchedFileStat = onWatchedFileStat; + /*@internal*/ + function getFileWatcherEventKind(oldTime, newTime) { + return oldTime === 0 + ? FileWatcherEventKind.Created + : newTime === 0 + ? FileWatcherEventKind.Deleted + : FileWatcherEventKind.Changed; + } + ts.getFileWatcherEventKind = getFileWatcherEventKind; + /*@internal*/ + ts.ignoredPaths = ["/node_modules/.", "/.git", "/.#"]; + /*@internal*/ + ts.sysLog = ts.noop; // eslint-disable-line prefer-const + /*@internal*/ + function setSysLog(logger) { + ts.sysLog = logger; + } + ts.setSysLog = setSysLog; + /** + * Watch the directory recursively using host provided method to watch child directories + * that means if this is recursive watcher, watch the children directories as well + * (eg on OS that dont support recursive watch using fs.watch use fs.watchFile) + */ + /*@internal*/ + function createDirectoryWatcherSupportingRecursive(host) { + var cache = ts.createMap(); + var callbackCache = ts.createMultiMap(); + var cacheToUpdateChildWatches = ts.createMap(); + var timerToUpdateChildWatches; + var filePathComparer = ts.getStringComparer(!host.useCaseSensitiveFileNames); + var toCanonicalFilePath = ts.createGetCanonicalFileName(host.useCaseSensitiveFileNames); + return function (dirName, callback, recursive, options) { return recursive ? + createDirectoryWatcher(dirName, options, callback) : + host.watchDirectory(dirName, callback, recursive, options); }; + /** + * Create the directory watcher for the dirPath. + */ + function createDirectoryWatcher(dirName, options, callback) { + var dirPath = toCanonicalFilePath(dirName); + var directoryWatcher = cache.get(dirPath); + if (directoryWatcher) { + directoryWatcher.refCount++; + } + else { + directoryWatcher = { + watcher: host.watchDirectory(dirName, function (fileName) { + if (isIgnoredPath(fileName)) + return; + if (options === null || options === void 0 ? void 0 : options.synchronousWatchDirectory) { + // Call the actual callback + invokeCallbacks(dirPath, fileName); + // Iterate through existing children and update the watches if needed + updateChildWatches(dirName, dirPath, options); + } + else { + nonSyncUpdateChildWatches(dirName, dirPath, fileName, options); + } + }, /*recursive*/ false, options), + refCount: 1, + childWatches: ts.emptyArray + }; + cache.set(dirPath, directoryWatcher); + updateChildWatches(dirName, dirPath, options); + } + var callbackToAdd = callback && { dirName: dirName, callback: callback }; + if (callbackToAdd) { + callbackCache.add(dirPath, callbackToAdd); + } + return { + dirName: dirName, + close: function () { + var directoryWatcher = ts.Debug.checkDefined(cache.get(dirPath)); + if (callbackToAdd) + callbackCache.remove(dirPath, callbackToAdd); + directoryWatcher.refCount--; + if (directoryWatcher.refCount) + return; + cache.delete(dirPath); + ts.closeFileWatcherOf(directoryWatcher); + directoryWatcher.childWatches.forEach(ts.closeFileWatcher); + } + }; + } + function invokeCallbacks(dirPath, fileNameOrInvokeMap) { + var fileName; + var invokeMap; + if (ts.isString(fileNameOrInvokeMap)) { + fileName = fileNameOrInvokeMap; + } + else { + invokeMap = fileNameOrInvokeMap; + } + // Call the actual callback + callbackCache.forEach(function (callbacks, rootDirName) { + if (invokeMap && invokeMap.has(rootDirName)) + return; + if (rootDirName === dirPath || (ts.startsWith(dirPath, rootDirName) && dirPath[rootDirName.length] === ts.directorySeparator)) { + if (invokeMap) { + invokeMap.set(rootDirName, true); + } + else { + callbacks.forEach(function (_a) { + var callback = _a.callback; + return callback(fileName); + }); + } + } + }); + } + function nonSyncUpdateChildWatches(dirName, dirPath, fileName, options) { + // Iterate through existing children and update the watches if needed + var parentWatcher = cache.get(dirPath); + if (parentWatcher && host.directoryExists(dirName)) { + // Schedule the update and postpone invoke for callbacks + scheduleUpdateChildWatches(dirName, dirPath, options); + return; + } + // Call the actual callbacks and remove child watches + invokeCallbacks(dirPath, fileName); + removeChildWatches(parentWatcher); + } + function scheduleUpdateChildWatches(dirName, dirPath, options) { + if (!cacheToUpdateChildWatches.has(dirPath)) { + cacheToUpdateChildWatches.set(dirPath, { dirName: dirName, options: options }); + } + if (timerToUpdateChildWatches) { + host.clearTimeout(timerToUpdateChildWatches); + timerToUpdateChildWatches = undefined; + } + timerToUpdateChildWatches = host.setTimeout(onTimerToUpdateChildWatches, 1000); + } + function onTimerToUpdateChildWatches() { + timerToUpdateChildWatches = undefined; + ts.sysLog("sysLog:: onTimerToUpdateChildWatches:: " + cacheToUpdateChildWatches.size); + var start = ts.timestamp(); + var invokeMap = ts.createMap(); + while (!timerToUpdateChildWatches && cacheToUpdateChildWatches.size) { + var _a = cacheToUpdateChildWatches.entries().next(), _b = _a.value, dirPath = _b[0], _c = _b[1], dirName = _c.dirName, options = _c.options, done = _a.done; + ts.Debug.assert(!done); + cacheToUpdateChildWatches.delete(dirPath); + // Because the child refresh is fresh, we would need to invalidate whole root directory being watched + // to ensure that all the changes are reflected at this time + invokeCallbacks(dirPath, invokeMap); + updateChildWatches(dirName, dirPath, options); + } + ts.sysLog("sysLog:: invokingWatchers:: " + (ts.timestamp() - start) + "ms:: " + cacheToUpdateChildWatches.size); + callbackCache.forEach(function (callbacks, rootDirName) { + if (invokeMap.has(rootDirName)) { + callbacks.forEach(function (_a) { + var callback = _a.callback, dirName = _a.dirName; + return callback(dirName); + }); + } + }); + var elapsed = ts.timestamp() - start; + ts.sysLog("sysLog:: Elapsed " + elapsed + "ms:: onTimerToUpdateChildWatches:: " + cacheToUpdateChildWatches.size + " " + timerToUpdateChildWatches); + } + function removeChildWatches(parentWatcher) { + if (!parentWatcher) + return; + var existingChildWatches = parentWatcher.childWatches; + parentWatcher.childWatches = ts.emptyArray; + for (var _i = 0, existingChildWatches_1 = existingChildWatches; _i < existingChildWatches_1.length; _i++) { + var childWatcher = existingChildWatches_1[_i]; + childWatcher.close(); + removeChildWatches(cache.get(toCanonicalFilePath(childWatcher.dirName))); + } + } + function updateChildWatches(dirName, dirPath, options) { + // Iterate through existing children and update the watches if needed + var parentWatcher = cache.get(dirPath); + if (parentWatcher) { + parentWatcher.childWatches = watchChildDirectories(dirName, parentWatcher.childWatches, options); + } + } + /** + * Watch the directories in the parentDir + */ + function watchChildDirectories(parentDir, existingChildWatches, options) { + var newChildWatches; + ts.enumerateInsertsAndDeletes(host.directoryExists(parentDir) ? ts.mapDefined(host.getAccessibleSortedChildDirectories(parentDir), function (child) { + var childFullName = ts.getNormalizedAbsolutePath(child, parentDir); + // Filter our the symbolic link directories since those arent included in recursive watch + // which is same behaviour when recursive: true is passed to fs.watch + return !isIgnoredPath(childFullName) && filePathComparer(childFullName, ts.normalizePath(host.realpath(childFullName))) === 0 /* EqualTo */ ? childFullName : undefined; + }) : ts.emptyArray, existingChildWatches, function (child, childWatcher) { return filePathComparer(child, childWatcher.dirName); }, createAndAddChildDirectoryWatcher, ts.closeFileWatcher, addChildDirectoryWatcher); + return newChildWatches || ts.emptyArray; + /** + * Create new childDirectoryWatcher and add it to the new ChildDirectoryWatcher list + */ + function createAndAddChildDirectoryWatcher(childName) { + var result = createDirectoryWatcher(childName, options); + addChildDirectoryWatcher(result); + } + /** + * Add child directory watcher to the new ChildDirectoryWatcher list + */ + function addChildDirectoryWatcher(childWatcher) { + (newChildWatches || (newChildWatches = [])).push(childWatcher); + } + } + function isIgnoredPath(path) { + return ts.some(ts.ignoredPaths, function (searchPath) { return isInPath(path, searchPath); }); + } + function isInPath(path, searchPath) { + if (ts.stringContains(path, searchPath)) + return true; + if (host.useCaseSensitiveFileNames) + return false; + return ts.stringContains(toCanonicalFilePath(path), searchPath); + } + } + ts.createDirectoryWatcherSupportingRecursive = createDirectoryWatcherSupportingRecursive; + /*@internal*/ + var FileSystemEntryKind; + (function (FileSystemEntryKind) { + FileSystemEntryKind[FileSystemEntryKind["File"] = 0] = "File"; + FileSystemEntryKind[FileSystemEntryKind["Directory"] = 1] = "Directory"; + })(FileSystemEntryKind = ts.FileSystemEntryKind || (ts.FileSystemEntryKind = {})); + /*@internal*/ + function createFileWatcherCallback(callback) { + return function (_fileName, eventKind) { return callback(eventKind === FileWatcherEventKind.Changed ? "change" : "rename", ""); }; + } + ts.createFileWatcherCallback = createFileWatcherCallback; + function createFsWatchCallbackForFileWatcherCallback(fileName, callback, fileExists) { + return function (eventName) { + if (eventName === "rename") { + callback(fileName, fileExists(fileName) ? FileWatcherEventKind.Created : FileWatcherEventKind.Deleted); + } + else { + // Change + callback(fileName, FileWatcherEventKind.Changed); + } + }; + } + function createFsWatchCallbackForDirectoryWatcherCallback(directoryName, callback) { + return function (eventName, relativeFileName) { + // In watchDirectory we only care about adding and removing files (when event name is + // "rename"); changes made within files are handled by corresponding fileWatchers (when + // event name is "change") + if (eventName === "rename") { + // When deleting a file, the passed baseFileName is null + callback(!relativeFileName ? directoryName : ts.normalizePath(ts.combinePaths(directoryName, relativeFileName))); + } + }; + } + /*@internal*/ + function createSystemWatchFunctions(_a) { + var pollingWatchFile = _a.pollingWatchFile, getModifiedTime = _a.getModifiedTime, setTimeout = _a.setTimeout, clearTimeout = _a.clearTimeout, fsWatch = _a.fsWatch, fileExists = _a.fileExists, useCaseSensitiveFileNames = _a.useCaseSensitiveFileNames, fsSupportsRecursiveFsWatch = _a.fsSupportsRecursiveFsWatch, directoryExists = _a.directoryExists, getAccessibleSortedChildDirectories = _a.getAccessibleSortedChildDirectories, realpath = _a.realpath, tscWatchFile = _a.tscWatchFile, useNonPollingWatchers = _a.useNonPollingWatchers, tscWatchDirectory = _a.tscWatchDirectory; + var dynamicPollingWatchFile; + var nonPollingWatchFile; + var hostRecursiveDirectoryWatcher; + return { + watchFile: watchFile, + watchDirectory: watchDirectory + }; + function watchFile(fileName, callback, pollingInterval, options) { + options = updateOptionsForWatchFile(options, useNonPollingWatchers); + var watchFileKind = ts.Debug.checkDefined(options.watchFile); + switch (watchFileKind) { + case ts.WatchFileKind.FixedPollingInterval: + return pollingWatchFile(fileName, callback, PollingInterval.Low, /*options*/ undefined); + case ts.WatchFileKind.PriorityPollingInterval: + return pollingWatchFile(fileName, callback, pollingInterval, /*options*/ undefined); + case ts.WatchFileKind.DynamicPriorityPolling: + return ensureDynamicPollingWatchFile()(fileName, callback, pollingInterval, /*options*/ undefined); + case ts.WatchFileKind.UseFsEvents: + return fsWatch(fileName, 0 /* File */, createFsWatchCallbackForFileWatcherCallback(fileName, callback, fileExists), + /*recursive*/ false, pollingInterval, ts.getFallbackOptions(options)); + case ts.WatchFileKind.UseFsEventsOnParentDirectory: + if (!nonPollingWatchFile) { + nonPollingWatchFile = createUseFsEventsOnParentDirectoryWatchFile(fsWatch, useCaseSensitiveFileNames); + } + return nonPollingWatchFile(fileName, callback, pollingInterval, ts.getFallbackOptions(options)); + default: + ts.Debug.assertNever(watchFileKind); + } + } + function ensureDynamicPollingWatchFile() { + return dynamicPollingWatchFile || + (dynamicPollingWatchFile = createDynamicPriorityPollingWatchFile({ getModifiedTime: getModifiedTime, setTimeout: setTimeout })); + } + function updateOptionsForWatchFile(options, useNonPollingWatchers) { + if (options && options.watchFile !== undefined) + return options; + switch (tscWatchFile) { + case "PriorityPollingInterval": + // Use polling interval based on priority when create watch using host.watchFile + return { watchFile: ts.WatchFileKind.PriorityPollingInterval }; + case "DynamicPriorityPolling": + // Use polling interval but change the interval depending on file changes and their default polling interval + return { watchFile: ts.WatchFileKind.DynamicPriorityPolling }; + case "UseFsEvents": + // Use notifications from FS to watch with falling back to fs.watchFile + return generateWatchFileOptions(ts.WatchFileKind.UseFsEvents, ts.PollingWatchKind.PriorityInterval, options); + case "UseFsEventsWithFallbackDynamicPolling": + // Use notifications from FS to watch with falling back to dynamic watch file + return generateWatchFileOptions(ts.WatchFileKind.UseFsEvents, ts.PollingWatchKind.DynamicPriority, options); + case "UseFsEventsOnParentDirectory": + useNonPollingWatchers = true; + // fall through + default: + return useNonPollingWatchers ? + // Use notifications from FS to watch with falling back to fs.watchFile + generateWatchFileOptions(ts.WatchFileKind.UseFsEventsOnParentDirectory, ts.PollingWatchKind.PriorityInterval, options) : + // Default to do not use fixed polling interval + { watchFile: ts.WatchFileKind.FixedPollingInterval }; + } + } + function generateWatchFileOptions(watchFile, fallbackPolling, options) { + var defaultFallbackPolling = options === null || options === void 0 ? void 0 : options.fallbackPolling; + return { + watchFile: watchFile, + fallbackPolling: defaultFallbackPolling === undefined ? + fallbackPolling : + defaultFallbackPolling + }; + } + function watchDirectory(directoryName, callback, recursive, options) { + if (fsSupportsRecursiveFsWatch) { + return fsWatch(directoryName, 1 /* Directory */, createFsWatchCallbackForDirectoryWatcherCallback(directoryName, callback), recursive, PollingInterval.Medium, ts.getFallbackOptions(options)); + } + if (!hostRecursiveDirectoryWatcher) { + hostRecursiveDirectoryWatcher = createDirectoryWatcherSupportingRecursive({ + useCaseSensitiveFileNames: useCaseSensitiveFileNames, + directoryExists: directoryExists, + getAccessibleSortedChildDirectories: getAccessibleSortedChildDirectories, + watchDirectory: nonRecursiveWatchDirectory, + realpath: realpath, + setTimeout: setTimeout, + clearTimeout: clearTimeout + }); + } + return hostRecursiveDirectoryWatcher(directoryName, callback, recursive, options); + } + function nonRecursiveWatchDirectory(directoryName, callback, recursive, options) { + ts.Debug.assert(!recursive); + options = updateOptionsForWatchDirectory(options); + var watchDirectoryKind = ts.Debug.checkDefined(options.watchDirectory); + switch (watchDirectoryKind) { + case ts.WatchDirectoryKind.FixedPollingInterval: + return pollingWatchFile(directoryName, function () { return callback(directoryName); }, PollingInterval.Medium, + /*options*/ undefined); + case ts.WatchDirectoryKind.DynamicPriorityPolling: + return ensureDynamicPollingWatchFile()(directoryName, function () { return callback(directoryName); }, PollingInterval.Medium, + /*options*/ undefined); + case ts.WatchDirectoryKind.UseFsEvents: + return fsWatch(directoryName, 1 /* Directory */, createFsWatchCallbackForDirectoryWatcherCallback(directoryName, callback), recursive, PollingInterval.Medium, ts.getFallbackOptions(options)); + default: + ts.Debug.assertNever(watchDirectoryKind); + } + } + function updateOptionsForWatchDirectory(options) { + if (options && options.watchDirectory !== undefined) + return options; + switch (tscWatchDirectory) { + case "RecursiveDirectoryUsingFsWatchFile": + // Use polling interval based on priority when create watch using host.watchFile + return { watchDirectory: ts.WatchDirectoryKind.FixedPollingInterval }; + case "RecursiveDirectoryUsingDynamicPriorityPolling": + // Use polling interval but change the interval depending on file changes and their default polling interval + return { watchDirectory: ts.WatchDirectoryKind.DynamicPriorityPolling }; + default: + var defaultFallbackPolling = options === null || options === void 0 ? void 0 : options.fallbackPolling; + return { + watchDirectory: ts.WatchDirectoryKind.UseFsEvents, + fallbackPolling: defaultFallbackPolling !== undefined ? + defaultFallbackPolling : + undefined + }; + } + } + } + ts.createSystemWatchFunctions = createSystemWatchFunctions; + /** + * patch writefile to create folder before writing the file + */ + /*@internal*/ + function patchWriteFileEnsuringDirectory(sys) { + // patch writefile to create folder before writing the file + var originalWriteFile = sys.writeFile; + sys.writeFile = function (path, data, writeBom) { + return ts.writeFileEnsuringDirectories(path, data, !!writeBom, function (path, data, writeByteOrderMark) { return originalWriteFile.call(sys, path, data, writeByteOrderMark); }, function (path) { return sys.createDirectory(path); }, function (path) { return sys.directoryExists(path); }); + }; + } + ts.patchWriteFileEnsuringDirectory = patchWriteFileEnsuringDirectory; + function getNodeMajorVersion() { + if (typeof process === "undefined") { + return undefined; + } + var version = process.version; + if (!version) { + return undefined; + } + var dot = version.indexOf("."); + if (dot === -1) { + return undefined; + } + return parseInt(version.substring(1, dot)); + } + ts.getNodeMajorVersion = getNodeMajorVersion; + // TODO: GH#18217 this is used as if it's certainly defined in many places. + // eslint-disable-next-line prefer-const + ts.sys = (function () { + // NodeJS detects "\uFEFF" at the start of the string and *replaces* it with the actual + // byte order mark from the specified encoding. Using any other byte order mark does + // not actually work. + var byteOrderMarkIndicator = "\uFEFF"; + function getNodeSystem() { + var nativePattern = /^native |^\([^)]+\)$|^(internal[\\/]|[a-zA-Z0-9_\s]+(\.js)?$)/; + var _fs = require("fs"); + var _path = require("path"); + var _os = require("os"); + // crypto can be absent on reduced node installations + var _crypto; + try { + _crypto = require("crypto"); + } + catch (_a) { + _crypto = undefined; + } + var activeSession; + var profilePath = "./profile.cpuprofile"; + var Buffer = require("buffer").Buffer; + var nodeVersion = getNodeMajorVersion(); + var isNode4OrLater = nodeVersion >= 4; + var isLinuxOrMacOs = process.platform === "linux" || process.platform === "darwin"; + var platform = _os.platform(); + var useCaseSensitiveFileNames = isFileSystemCaseSensitive(); + var fsSupportsRecursiveFsWatch = isNode4OrLater && (process.platform === "win32" || process.platform === "darwin"); + var _b = createSystemWatchFunctions({ + pollingWatchFile: createSingleFileWatcherPerName(fsWatchFileWorker, useCaseSensitiveFileNames), + getModifiedTime: getModifiedTime, + setTimeout: setTimeout, + clearTimeout: clearTimeout, + fsWatch: fsWatch, + useCaseSensitiveFileNames: useCaseSensitiveFileNames, + fileExists: fileExists, + // Node 4.0 `fs.watch` function supports the "recursive" option on both OSX and Windows + // (ref: https://github.com/nodejs/node/pull/2649 and https://github.com/Microsoft/TypeScript/issues/4643) + fsSupportsRecursiveFsWatch: fsSupportsRecursiveFsWatch, + directoryExists: directoryExists, + getAccessibleSortedChildDirectories: function (path) { return getAccessibleFileSystemEntries(path).directories; }, + realpath: realpath, + tscWatchFile: process.env.TSC_WATCHFILE, + useNonPollingWatchers: process.env.TSC_NONPOLLING_WATCHER, + tscWatchDirectory: process.env.TSC_WATCHDIRECTORY, + }), watchFile = _b.watchFile, watchDirectory = _b.watchDirectory; + var nodeSystem = { + args: process.argv.slice(2), + newLine: _os.EOL, + useCaseSensitiveFileNames: useCaseSensitiveFileNames, + write: function (s) { + process.stdout.write(s); + }, + writeOutputIsTTY: function () { + return process.stdout.isTTY; + }, + readFile: readFile, + writeFile: writeFile, + watchFile: watchFile, + watchDirectory: watchDirectory, + resolvePath: function (path) { return _path.resolve(path); }, + fileExists: fileExists, + directoryExists: directoryExists, + createDirectory: function (directoryName) { + if (!nodeSystem.directoryExists(directoryName)) { + // Wrapped in a try-catch to prevent crashing if we are in a race + // with another copy of ourselves to create the same directory + try { + _fs.mkdirSync(directoryName); + } + catch (e) { + if (e.code !== "EEXIST") { + // Failed for some other reason (access denied?); still throw + throw e; + } + } + } + }, + getExecutingFilePath: function () { + return __filename; + }, + getCurrentDirectory: function () { + return process.cwd(); + }, + getDirectories: getDirectories, + getEnvironmentVariable: function (name) { + return process.env[name] || ""; + }, + readDirectory: readDirectory, + getModifiedTime: getModifiedTime, + setModifiedTime: setModifiedTime, + deleteFile: deleteFile, + createHash: _crypto ? createSHA256Hash : generateDjb2Hash, + createSHA256Hash: _crypto ? createSHA256Hash : undefined, + getMemoryUsage: function () { + if (global.gc) { + global.gc(); + } + return process.memoryUsage().heapUsed; + }, + getFileSize: function (path) { + try { + var stat = _fs.statSync(path); + if (stat.isFile()) { + return stat.size; + } + } + catch ( /*ignore*/_a) { /*ignore*/ } + return 0; + }, + exit: function (exitCode) { + disableCPUProfiler(function () { return process.exit(exitCode); }); + }, + enableCPUProfiler: enableCPUProfiler, + disableCPUProfiler: disableCPUProfiler, + realpath: realpath, + debugMode: !!process.env.NODE_INSPECTOR_IPC || ts.some(process.execArgv, function (arg) { return /^--(inspect|debug)(-brk)?(=\d+)?$/i.test(arg); }), + tryEnableSourceMapsForHost: function () { + try { + require("source-map-support").install(); + } + catch (_a) { + // Could not enable source maps. + } + }, + setTimeout: setTimeout, + clearTimeout: clearTimeout, + clearScreen: function () { + process.stdout.write("\x1Bc"); + }, + setBlocking: function () { + if (process.stdout && process.stdout._handle && process.stdout._handle.setBlocking) { + process.stdout._handle.setBlocking(true); + } + }, + bufferFrom: bufferFrom, + base64decode: function (input) { return bufferFrom(input, "base64").toString("utf8"); }, + base64encode: function (input) { return bufferFrom(input).toString("base64"); }, + require: function (baseDir, moduleName) { + try { + var modulePath = ts.resolveJSModule(moduleName, baseDir, nodeSystem); + return { module: require(modulePath), modulePath: modulePath, error: undefined }; + } + catch (error) { + return { module: undefined, modulePath: undefined, error: error }; + } + } + }; + return nodeSystem; + /** + * Uses the builtin inspector APIs to capture a CPU profile + * See https://nodejs.org/api/inspector.html#inspector_example_usage for details + */ + function enableCPUProfiler(path, cb) { + if (activeSession) { + cb(); + return false; + } + var inspector = require("inspector"); + if (!inspector || !inspector.Session) { + cb(); + return false; + } + var session = new inspector.Session(); + session.connect(); + session.post("Profiler.enable", function () { + session.post("Profiler.start", function () { + activeSession = session; + profilePath = path; + cb(); + }); + }); + return true; + } + /** + * Strips non-TS paths from the profile, so users with private projects shouldn't + * need to worry about leaking paths by submitting a cpu profile to us + */ + function cleanupPaths(profile) { + var externalFileCounter = 0; + var remappedPaths = ts.createMap(); + var normalizedDir = ts.normalizeSlashes(__dirname); + // Windows rooted dir names need an extra `/` prepended to be valid file:/// urls + var fileUrlRoot = "file://" + (ts.getRootLength(normalizedDir) === 1 ? "" : "/") + normalizedDir; + for (var _i = 0, _a = profile.nodes; _i < _a.length; _i++) { + var node = _a[_i]; + if (node.callFrame.url) { + var url = ts.normalizeSlashes(node.callFrame.url); + if (ts.containsPath(fileUrlRoot, url, useCaseSensitiveFileNames)) { + node.callFrame.url = ts.getRelativePathToDirectoryOrUrl(fileUrlRoot, url, fileUrlRoot, ts.createGetCanonicalFileName(useCaseSensitiveFileNames), /*isAbsolutePathAnUrl*/ true); + } + else if (!nativePattern.test(url)) { + node.callFrame.url = (remappedPaths.has(url) ? remappedPaths : remappedPaths.set(url, "external" + externalFileCounter + ".js")).get(url); + externalFileCounter++; + } + } + } + return profile; + } + function disableCPUProfiler(cb) { + if (activeSession && activeSession !== "stopping") { + var s_1 = activeSession; + activeSession.post("Profiler.stop", function (err, _a) { + var profile = _a.profile; + if (!err) { + try { + if (_fs.statSync(profilePath).isDirectory()) { + profilePath = _path.join(profilePath, (new Date()).toISOString().replace(/:/g, "-") + "+P" + process.pid + ".cpuprofile"); + } + } + catch (_b) { + // do nothing and ignore fallible fs operation + } + try { + _fs.mkdirSync(_path.dirname(profilePath), { recursive: true }); + } + catch (_c) { + // do nothing and ignore fallible fs operation + } + _fs.writeFileSync(profilePath, JSON.stringify(cleanupPaths(profile))); + } + activeSession = undefined; + s_1.disconnect(); + cb(); + }); + activeSession = "stopping"; + return true; + } + else { + cb(); + return false; + } + } + function bufferFrom(input, encoding) { + // See https://github.com/Microsoft/TypeScript/issues/25652 + return Buffer.from && Buffer.from !== Int8Array.from + ? Buffer.from(input, encoding) + : new Buffer(input, encoding); + } + function isFileSystemCaseSensitive() { + // win32\win64 are case insensitive platforms + if (platform === "win32" || platform === "win64") { + return false; + } + // If this file exists under a different case, we must be case-insensitve. + return !fileExists(swapCase(__filename)); + } + /** Convert all lowercase chars to uppercase, and vice-versa */ + function swapCase(s) { + return s.replace(/\w/g, function (ch) { + var up = ch.toUpperCase(); + return ch === up ? ch.toLowerCase() : up; + }); + } + function fsWatchFileWorker(fileName, callback, pollingInterval) { + _fs.watchFile(fileName, { persistent: true, interval: pollingInterval }, fileChanged); + var eventKind; + return { + close: function () { return _fs.unwatchFile(fileName, fileChanged); } + }; + function fileChanged(curr, prev) { + // previous event kind check is to ensure we recongnize the file as previously also missing when it is restored or renamed twice (that is it disappears and reappears) + // In such case, prevTime returned is same as prev time of event when file was deleted as per node documentation + var isPreviouslyDeleted = +prev.mtime === 0 || eventKind === FileWatcherEventKind.Deleted; + if (+curr.mtime === 0) { + if (isPreviouslyDeleted) { + // Already deleted file, no need to callback again + return; + } + eventKind = FileWatcherEventKind.Deleted; + } + else if (isPreviouslyDeleted) { + eventKind = FileWatcherEventKind.Created; + } + // If there is no change in modified time, ignore the event + else if (+curr.mtime === +prev.mtime) { + return; + } + else { + // File changed + eventKind = FileWatcherEventKind.Changed; + } + callback(fileName, eventKind); + } + } + function fsWatch(fileOrDirectory, entryKind, callback, recursive, fallbackPollingInterval, fallbackOptions) { + var options; + var lastDirectoryPartWithDirectorySeparator; + var lastDirectoryPart; + if (isLinuxOrMacOs) { + lastDirectoryPartWithDirectorySeparator = fileOrDirectory.substr(fileOrDirectory.lastIndexOf(ts.directorySeparator)); + lastDirectoryPart = lastDirectoryPartWithDirectorySeparator.slice(ts.directorySeparator.length); + } + /** Watcher for the file system entry depending on whether it is missing or present */ + var watcher = !fileSystemEntryExists(fileOrDirectory, entryKind) ? + watchMissingFileSystemEntry() : + watchPresentFileSystemEntry(); + return { + close: function () { + // Close the watcher (either existing file system entry watcher or missing file system entry watcher) + watcher.close(); + watcher = undefined; + } + }; + /** + * Invoke the callback with rename and update the watcher if not closed + * @param createWatcher + */ + function invokeCallbackAndUpdateWatcher(createWatcher) { + ts.sysLog("sysLog:: " + fileOrDirectory + ":: Changing watcher to " + (createWatcher === watchPresentFileSystemEntry ? "Present" : "Missing") + "FileSystemEntryWatcher"); + // Call the callback for current directory + callback("rename", ""); + // If watcher is not closed, update it + if (watcher) { + watcher.close(); + watcher = createWatcher(); + } + } + /** + * Watch the file or directory that is currently present + * and when the watched file or directory is deleted, switch to missing file system entry watcher + */ + function watchPresentFileSystemEntry() { + // Node 4.0 `fs.watch` function supports the "recursive" option on both OSX and Windows + // (ref: https://github.com/nodejs/node/pull/2649 and https://github.com/Microsoft/TypeScript/issues/4643) + if (options === undefined) { + if (fsSupportsRecursiveFsWatch) { + options = { persistent: true, recursive: !!recursive }; + } + else { + options = { persistent: true }; + } + } + try { + var presentWatcher = _fs.watch(fileOrDirectory, options, isLinuxOrMacOs ? + callbackChangingToMissingFileSystemEntry : + callback); + // Watch the missing file or directory or error + presentWatcher.on("error", function () { return invokeCallbackAndUpdateWatcher(watchMissingFileSystemEntry); }); + return presentWatcher; + } + catch (e) { + // Catch the exception and use polling instead + // Eg. on linux the number of watches are limited and one could easily exhaust watches and the exception ENOSPC is thrown when creating watcher at that point + // so instead of throwing error, use fs.watchFile + return watchPresentFileSystemEntryWithFsWatchFile(); + } + } + function callbackChangingToMissingFileSystemEntry(event, relativeName) { + // because relativeName is not guaranteed to be correct we need to check on each rename with few combinations + // Eg on ubuntu while watching app/node_modules the relativeName is "node_modules" which is neither relative nor full path + return event === "rename" && + (!relativeName || + relativeName === lastDirectoryPart || + relativeName.lastIndexOf(lastDirectoryPartWithDirectorySeparator) === relativeName.length - lastDirectoryPartWithDirectorySeparator.length) && + !fileSystemEntryExists(fileOrDirectory, entryKind) ? + invokeCallbackAndUpdateWatcher(watchMissingFileSystemEntry) : + callback(event, relativeName); + } + /** + * Watch the file or directory using fs.watchFile since fs.watch threw exception + * Eg. on linux the number of watches are limited and one could easily exhaust watches and the exception ENOSPC is thrown when creating watcher at that point + */ + function watchPresentFileSystemEntryWithFsWatchFile() { + ts.sysLog("sysLog:: " + fileOrDirectory + ":: Changing to fsWatchFile"); + return watchFile(fileOrDirectory, createFileWatcherCallback(callback), fallbackPollingInterval, fallbackOptions); + } + /** + * Watch the file or directory that is missing + * and switch to existing file or directory when the missing filesystem entry is created + */ + function watchMissingFileSystemEntry() { + return watchFile(fileOrDirectory, function (_fileName, eventKind) { + if (eventKind === FileWatcherEventKind.Created && fileSystemEntryExists(fileOrDirectory, entryKind)) { + // Call the callback for current file or directory + // For now it could be callback for the inner directory creation, + // but just return current directory, better than current no-op + invokeCallbackAndUpdateWatcher(watchPresentFileSystemEntry); + } + }, fallbackPollingInterval, fallbackOptions); + } + } + function readFileWorker(fileName, _encoding) { + var buffer; + try { + buffer = _fs.readFileSync(fileName); + } + catch (e) { + return undefined; + } + var len = buffer.length; + if (len >= 2 && buffer[0] === 0xFE && buffer[1] === 0xFF) { + // Big endian UTF-16 byte order mark detected. Since big endian is not supported by node.js, + // flip all byte pairs and treat as little endian. + len &= ~1; // Round down to a multiple of 2 + for (var i = 0; i < len; i += 2) { + var temp = buffer[i]; + buffer[i] = buffer[i + 1]; + buffer[i + 1] = temp; + } + return buffer.toString("utf16le", 2); + } + if (len >= 2 && buffer[0] === 0xFF && buffer[1] === 0xFE) { + // Little endian UTF-16 byte order mark detected + return buffer.toString("utf16le", 2); + } + if (len >= 3 && buffer[0] === 0xEF && buffer[1] === 0xBB && buffer[2] === 0xBF) { + // UTF-8 byte order mark detected + return buffer.toString("utf8", 3); + } + // Default is UTF-8 with no byte order mark + return buffer.toString("utf8"); + } + function readFile(fileName, _encoding) { + ts.perfLogger.logStartReadFile(fileName); + var file = readFileWorker(fileName, _encoding); + ts.perfLogger.logStopReadFile(); + return file; + } + function writeFile(fileName, data, writeByteOrderMark) { + ts.perfLogger.logEvent("WriteFile: " + fileName); + // If a BOM is required, emit one + if (writeByteOrderMark) { + data = byteOrderMarkIndicator + data; + } + var fd; + try { + fd = _fs.openSync(fileName, "w"); + _fs.writeSync(fd, data, /*position*/ undefined, "utf8"); + } + finally { + if (fd !== undefined) { + _fs.closeSync(fd); + } + } + } + function getAccessibleFileSystemEntries(path) { + ts.perfLogger.logEvent("ReadDir: " + (path || ".")); + try { + var entries = _fs.readdirSync(path || ".", { withFileTypes: true }); + var files = []; + var directories = []; + for (var _i = 0, entries_2 = entries; _i < entries_2.length; _i++) { + var dirent = entries_2[_i]; + // withFileTypes is not supported before Node 10.10. + var entry = typeof dirent === "string" ? dirent : dirent.name; + // This is necessary because on some file system node fails to exclude + // "." and "..". See https://github.com/nodejs/node/issues/4002 + if (entry === "." || entry === "..") { + continue; + } + var stat = void 0; + if (typeof dirent === "string" || dirent.isSymbolicLink()) { + var name = ts.combinePaths(path, entry); + try { + stat = _fs.statSync(name); + } + catch (e) { + continue; + } + } + else { + stat = dirent; + } + if (stat.isFile()) { + files.push(entry); + } + else if (stat.isDirectory()) { + directories.push(entry); + } + } + files.sort(); + directories.sort(); + return { files: files, directories: directories }; + } + catch (e) { + return ts.emptyFileSystemEntries; + } + } + function readDirectory(path, extensions, excludes, includes, depth) { + return ts.matchFiles(path, extensions, excludes, includes, useCaseSensitiveFileNames, process.cwd(), depth, getAccessibleFileSystemEntries, realpath); + } + function fileSystemEntryExists(path, entryKind) { + try { + var stat = _fs.statSync(path); + switch (entryKind) { + case 0 /* File */: return stat.isFile(); + case 1 /* Directory */: return stat.isDirectory(); + default: return false; + } + } + catch (e) { + return false; + } + } + function fileExists(path) { + return fileSystemEntryExists(path, 0 /* File */); + } + function directoryExists(path) { + return fileSystemEntryExists(path, 1 /* Directory */); + } + function getDirectories(path) { + return getAccessibleFileSystemEntries(path).directories.slice(); + } + function realpath(path) { + try { + return _fs.realpathSync(path); + } + catch (_a) { + return path; + } + } + function getModifiedTime(path) { + try { + return _fs.statSync(path).mtime; + } + catch (e) { + return undefined; + } + } + function setModifiedTime(path, time) { + try { + _fs.utimesSync(path, time, time); + } + catch (e) { + return; + } + } + function deleteFile(path) { + try { + return _fs.unlinkSync(path); + } + catch (e) { + return; + } + } + function createSHA256Hash(data) { + var hash = _crypto.createHash("sha256"); + hash.update(data); + return hash.digest("hex"); + } + } + var sys; + if (typeof process !== "undefined" && process.nextTick && !process.browser && typeof require !== "undefined") { + // process and process.nextTick checks if current environment is node-like + // process.browser check excludes webpack and browserify + sys = getNodeSystem(); + } + if (sys) { + // patch writefile to create folder before writing the file + patchWriteFileEnsuringDirectory(sys); + } + return sys; + })(); + if (ts.sys && ts.sys.getEnvironmentVariable) { + setCustomPollingValues(ts.sys); + ts.Debug.setAssertionLevel(/^development$/i.test(ts.sys.getEnvironmentVariable("NODE_ENV")) + ? 1 /* Normal */ + : 0 /* None */); + } + if (ts.sys && ts.sys.debugMode) { + ts.Debug.isDebugging = true; + } +})(ts || (ts = {})); +/* @internal */ +var ts; +(function (ts) { + /** + * Internally, we represent paths as strings with '/' as the directory separator. + * When we make system calls (eg: LanguageServiceHost.getDirectory()), + * we expect the host to correctly handle paths in our specified format. + */ + ts.directorySeparator = "/"; + var altDirectorySeparator = "\\"; + var urlSchemeSeparator = "://"; + var backslashRegExp = /\\/g; + //// Path Tests + /** + * Determines whether a charCode corresponds to `/` or `\`. + */ + function isAnyDirectorySeparator(charCode) { + return charCode === 47 /* slash */ || charCode === 92 /* backslash */; + } + ts.isAnyDirectorySeparator = isAnyDirectorySeparator; + /** + * Determines whether a path starts with a URL scheme (e.g. starts with `http://`, `ftp://`, `file://`, etc.). + */ + function isUrl(path) { + return getEncodedRootLength(path) < 0; + } + ts.isUrl = isUrl; + /** + * Determines whether a path is an absolute disk path (e.g. starts with `/`, or a dos path + * like `c:`, `c:\` or `c:/`). + */ + function isRootedDiskPath(path) { + return getEncodedRootLength(path) > 0; + } + ts.isRootedDiskPath = isRootedDiskPath; + /** + * Determines whether a path consists only of a path root. + */ + function isDiskPathRoot(path) { + var rootLength = getEncodedRootLength(path); + return rootLength > 0 && rootLength === path.length; + } + ts.isDiskPathRoot = isDiskPathRoot; + /** + * Determines whether a path starts with an absolute path component (i.e. `/`, `c:/`, `file://`, etc.). + * + * ```ts + * // POSIX + * pathIsAbsolute("/path/to/file.ext") === true + * // DOS + * pathIsAbsolute("c:/path/to/file.ext") === true + * // URL + * pathIsAbsolute("file:///path/to/file.ext") === true + * // Non-absolute + * pathIsAbsolute("path/to/file.ext") === false + * pathIsAbsolute("./path/to/file.ext") === false + * ``` + */ + function pathIsAbsolute(path) { + return getEncodedRootLength(path) !== 0; + } + ts.pathIsAbsolute = pathIsAbsolute; + /** + * Determines whether a path starts with a relative path component (i.e. `.` or `..`). + */ + function pathIsRelative(path) { + return /^\.\.?($|[\\/])/.test(path); + } + ts.pathIsRelative = pathIsRelative; + function hasExtension(fileName) { + return ts.stringContains(getBaseFileName(fileName), "."); + } + ts.hasExtension = hasExtension; + function fileExtensionIs(path, extension) { + return path.length > extension.length && ts.endsWith(path, extension); + } + ts.fileExtensionIs = fileExtensionIs; + function fileExtensionIsOneOf(path, extensions) { + for (var _i = 0, extensions_1 = extensions; _i < extensions_1.length; _i++) { + var extension = extensions_1[_i]; + if (fileExtensionIs(path, extension)) { + return true; + } + } + return false; + } + ts.fileExtensionIsOneOf = fileExtensionIsOneOf; + /** + * Determines whether a path has a trailing separator (`/` or `\\`). + */ + function hasTrailingDirectorySeparator(path) { + return path.length > 0 && isAnyDirectorySeparator(path.charCodeAt(path.length - 1)); + } + ts.hasTrailingDirectorySeparator = hasTrailingDirectorySeparator; + //// Path Parsing + function isVolumeCharacter(charCode) { + return (charCode >= 97 /* a */ && charCode <= 122 /* z */) || + (charCode >= 65 /* A */ && charCode <= 90 /* Z */); + } + function getFileUrlVolumeSeparatorEnd(url, start) { + var ch0 = url.charCodeAt(start); + if (ch0 === 58 /* colon */) + return start + 1; + if (ch0 === 37 /* percent */ && url.charCodeAt(start + 1) === 51 /* _3 */) { + var ch2 = url.charCodeAt(start + 2); + if (ch2 === 97 /* a */ || ch2 === 65 /* A */) + return start + 3; + } + return -1; + } + /** + * Returns length of the root part of a path or URL (i.e. length of "/", "x:/", "//server/share/, file:///user/files"). + * If the root is part of a URL, the twos-complement of the root length is returned. + */ + function getEncodedRootLength(path) { + if (!path) + return 0; + var ch0 = path.charCodeAt(0); + // POSIX or UNC + if (ch0 === 47 /* slash */ || ch0 === 92 /* backslash */) { + if (path.charCodeAt(1) !== ch0) + return 1; // POSIX: "/" (or non-normalized "\") + var p1 = path.indexOf(ch0 === 47 /* slash */ ? ts.directorySeparator : altDirectorySeparator, 2); + if (p1 < 0) + return path.length; // UNC: "//server" or "\\server" + return p1 + 1; // UNC: "//server/" or "\\server\" + } + // DOS + if (isVolumeCharacter(ch0) && path.charCodeAt(1) === 58 /* colon */) { + var ch2 = path.charCodeAt(2); + if (ch2 === 47 /* slash */ || ch2 === 92 /* backslash */) + return 3; // DOS: "c:/" or "c:\" + if (path.length === 2) + return 2; // DOS: "c:" (but not "c:d") + } + // URL + var schemeEnd = path.indexOf(urlSchemeSeparator); + if (schemeEnd !== -1) { + var authorityStart = schemeEnd + urlSchemeSeparator.length; + var authorityEnd = path.indexOf(ts.directorySeparator, authorityStart); + if (authorityEnd !== -1) { // URL: "file:///", "file://server/", "file://server/path" + // For local "file" URLs, include the leading DOS volume (if present). + // Per https://www.ietf.org/rfc/rfc1738.txt, a host of "" or "localhost" is a + // special case interpreted as "the machine from which the URL is being interpreted". + var scheme = path.slice(0, schemeEnd); + var authority = path.slice(authorityStart, authorityEnd); + if (scheme === "file" && (authority === "" || authority === "localhost") && + isVolumeCharacter(path.charCodeAt(authorityEnd + 1))) { + var volumeSeparatorEnd = getFileUrlVolumeSeparatorEnd(path, authorityEnd + 2); + if (volumeSeparatorEnd !== -1) { + if (path.charCodeAt(volumeSeparatorEnd) === 47 /* slash */) { + // URL: "file:///c:/", "file://localhost/c:/", "file:///c%3a/", "file://localhost/c%3a/" + return ~(volumeSeparatorEnd + 1); + } + if (volumeSeparatorEnd === path.length) { + // URL: "file:///c:", "file://localhost/c:", "file:///c$3a", "file://localhost/c%3a" + // but not "file:///c:d" or "file:///c%3ad" + return ~volumeSeparatorEnd; + } + } + } + return ~(authorityEnd + 1); // URL: "file://server/", "http://server/" + } + return ~path.length; // URL: "file://server", "http://server" + } + // relative + return 0; + } + /** + * Returns length of the root part of a path or URL (i.e. length of "/", "x:/", "//server/share/, file:///user/files"). + * + * For example: + * ```ts + * getRootLength("a") === 0 // "" + * getRootLength("/") === 1 // "/" + * getRootLength("c:") === 2 // "c:" + * getRootLength("c:d") === 0 // "" + * getRootLength("c:/") === 3 // "c:/" + * getRootLength("c:\\") === 3 // "c:\\" + * getRootLength("//server") === 7 // "//server" + * getRootLength("//server/share") === 8 // "//server/" + * getRootLength("\\\\server") === 7 // "\\\\server" + * getRootLength("\\\\server\\share") === 8 // "\\\\server\\" + * getRootLength("file:///path") === 8 // "file:///" + * getRootLength("file:///c:") === 10 // "file:///c:" + * getRootLength("file:///c:d") === 8 // "file:///" + * getRootLength("file:///c:/path") === 11 // "file:///c:/" + * getRootLength("file://server") === 13 // "file://server" + * getRootLength("file://server/path") === 14 // "file://server/" + * getRootLength("http://server") === 13 // "http://server" + * getRootLength("http://server/path") === 14 // "http://server/" + * ``` + */ + function getRootLength(path) { + var rootLength = getEncodedRootLength(path); + return rootLength < 0 ? ~rootLength : rootLength; + } + ts.getRootLength = getRootLength; + function getDirectoryPath(path) { + path = normalizeSlashes(path); + // If the path provided is itself the root, then return it. + var rootLength = getRootLength(path); + if (rootLength === path.length) + return path; + // return the leading portion of the path up to the last (non-terminal) directory separator + // but not including any trailing directory separator. + path = removeTrailingDirectorySeparator(path); + return path.slice(0, Math.max(rootLength, path.lastIndexOf(ts.directorySeparator))); + } + ts.getDirectoryPath = getDirectoryPath; + function getBaseFileName(path, extensions, ignoreCase) { + path = normalizeSlashes(path); + // if the path provided is itself the root, then it has not file name. + var rootLength = getRootLength(path); + if (rootLength === path.length) + return ""; + // return the trailing portion of the path starting after the last (non-terminal) directory + // separator but not including any trailing directory separator. + path = removeTrailingDirectorySeparator(path); + var name = path.slice(Math.max(getRootLength(path), path.lastIndexOf(ts.directorySeparator) + 1)); + var extension = extensions !== undefined && ignoreCase !== undefined ? getAnyExtensionFromPath(name, extensions, ignoreCase) : undefined; + return extension ? name.slice(0, name.length - extension.length) : name; + } + ts.getBaseFileName = getBaseFileName; + function tryGetExtensionFromPath(path, extension, stringEqualityComparer) { + if (!ts.startsWith(extension, ".")) + extension = "." + extension; + if (path.length >= extension.length && path.charCodeAt(path.length - extension.length) === 46 /* dot */) { + var pathExtension = path.slice(path.length - extension.length); + if (stringEqualityComparer(pathExtension, extension)) { + return pathExtension; + } + } + } + function getAnyExtensionFromPathWorker(path, extensions, stringEqualityComparer) { + if (typeof extensions === "string") { + return tryGetExtensionFromPath(path, extensions, stringEqualityComparer) || ""; + } + for (var _i = 0, extensions_2 = extensions; _i < extensions_2.length; _i++) { + var extension = extensions_2[_i]; + var result = tryGetExtensionFromPath(path, extension, stringEqualityComparer); + if (result) + return result; + } + return ""; + } + function getAnyExtensionFromPath(path, extensions, ignoreCase) { + // Retrieves any string from the final "." onwards from a base file name. + // Unlike extensionFromPath, which throws an exception on unrecognized extensions. + if (extensions) { + return getAnyExtensionFromPathWorker(removeTrailingDirectorySeparator(path), extensions, ignoreCase ? ts.equateStringsCaseInsensitive : ts.equateStringsCaseSensitive); + } + var baseFileName = getBaseFileName(path); + var extensionIndex = baseFileName.lastIndexOf("."); + if (extensionIndex >= 0) { + return baseFileName.substring(extensionIndex); + } + return ""; + } + ts.getAnyExtensionFromPath = getAnyExtensionFromPath; + function pathComponents(path, rootLength) { + var root = path.substring(0, rootLength); + var rest = path.substring(rootLength).split(ts.directorySeparator); + if (rest.length && !ts.lastOrUndefined(rest)) + rest.pop(); + return __spreadArrays([root], rest); + } + /** + * Parse a path into an array containing a root component (at index 0) and zero or more path + * components (at indices > 0). The result is not normalized. + * If the path is relative, the root component is `""`. + * If the path is absolute, the root component includes the first path separator (`/`). + * + * ```ts + * // POSIX + * getPathComponents("/path/to/file.ext") === ["/", "path", "to", "file.ext"] + * getPathComponents("/path/to/") === ["/", "path", "to"] + * getPathComponents("/") === ["/"] + * // DOS + * getPathComponents("c:/path/to/file.ext") === ["c:/", "path", "to", "file.ext"] + * getPathComponents("c:/path/to/") === ["c:/", "path", "to"] + * getPathComponents("c:/") === ["c:/"] + * getPathComponents("c:") === ["c:"] + * // URL + * getPathComponents("http://typescriptlang.org/path/to/file.ext") === ["http://typescriptlang.org/", "path", "to", "file.ext"] + * getPathComponents("http://typescriptlang.org/path/to/") === ["http://typescriptlang.org/", "path", "to"] + * getPathComponents("http://typescriptlang.org/") === ["http://typescriptlang.org/"] + * getPathComponents("http://typescriptlang.org") === ["http://typescriptlang.org"] + * getPathComponents("file://server/path/to/file.ext") === ["file://server/", "path", "to", "file.ext"] + * getPathComponents("file://server/path/to/") === ["file://server/", "path", "to"] + * getPathComponents("file://server/") === ["file://server/"] + * getPathComponents("file://server") === ["file://server"] + * getPathComponents("file:///path/to/file.ext") === ["file:///", "path", "to", "file.ext"] + * getPathComponents("file:///path/to/") === ["file:///", "path", "to"] + * getPathComponents("file:///") === ["file:///"] + * getPathComponents("file://") === ["file://"] + */ + function getPathComponents(path, currentDirectory) { + if (currentDirectory === void 0) { currentDirectory = ""; } + path = combinePaths(currentDirectory, path); + return pathComponents(path, getRootLength(path)); + } + ts.getPathComponents = getPathComponents; + //// Path Formatting + /** + * Formats a parsed path consisting of a root component (at index 0) and zero or more path + * segments (at indices > 0). + * + * ```ts + * getPathFromPathComponents(["/", "path", "to", "file.ext"]) === "/path/to/file.ext" + * ``` + */ + function getPathFromPathComponents(pathComponents) { + if (pathComponents.length === 0) + return ""; + var root = pathComponents[0] && ensureTrailingDirectorySeparator(pathComponents[0]); + return root + pathComponents.slice(1).join(ts.directorySeparator); + } + ts.getPathFromPathComponents = getPathFromPathComponents; + //// Path Normalization + /** + * Normalize path separators, converting `\` into `/`. + */ + function normalizeSlashes(path) { + return path.replace(backslashRegExp, ts.directorySeparator); + } + ts.normalizeSlashes = normalizeSlashes; + /** + * Reduce an array of path components to a more simplified path by navigating any + * `"."` or `".."` entries in the path. + */ + function reducePathComponents(components) { + if (!ts.some(components)) + return []; + var reduced = [components[0]]; + for (var i = 1; i < components.length; i++) { + var component = components[i]; + if (!component) + continue; + if (component === ".") + continue; + if (component === "..") { + if (reduced.length > 1) { + if (reduced[reduced.length - 1] !== "..") { + reduced.pop(); + continue; + } + } + else if (reduced[0]) + continue; + } + reduced.push(component); + } + return reduced; + } + ts.reducePathComponents = reducePathComponents; + /** + * Combines paths. If a path is absolute, it replaces any previous path. Relative paths are not simplified. + * + * ```ts + * // Non-rooted + * combinePaths("path", "to", "file.ext") === "path/to/file.ext" + * combinePaths("path", "dir", "..", "to", "file.ext") === "path/dir/../to/file.ext" + * // POSIX + * combinePaths("/path", "to", "file.ext") === "/path/to/file.ext" + * combinePaths("/path", "/to", "file.ext") === "/to/file.ext" + * // DOS + * combinePaths("c:/path", "to", "file.ext") === "c:/path/to/file.ext" + * combinePaths("c:/path", "c:/to", "file.ext") === "c:/to/file.ext" + * // URL + * combinePaths("file:///path", "to", "file.ext") === "file:///path/to/file.ext" + * combinePaths("file:///path", "file:///to", "file.ext") === "file:///to/file.ext" + * ``` + */ + function combinePaths(path) { + var paths = []; + for (var _i = 1; _i < arguments.length; _i++) { + paths[_i - 1] = arguments[_i]; + } + if (path) + path = normalizeSlashes(path); + for (var _a = 0, paths_1 = paths; _a < paths_1.length; _a++) { + var relativePath = paths_1[_a]; + if (!relativePath) + continue; + relativePath = normalizeSlashes(relativePath); + if (!path || getRootLength(relativePath) !== 0) { + path = relativePath; + } + else { + path = ensureTrailingDirectorySeparator(path) + relativePath; + } + } + return path; + } + ts.combinePaths = combinePaths; + /** + * Combines and resolves paths. If a path is absolute, it replaces any previous path. Any + * `.` and `..` path components are resolved. Trailing directory separators are preserved. + * + * ```ts + * resolvePath("/path", "to", "file.ext") === "path/to/file.ext" + * resolvePath("/path", "to", "file.ext/") === "path/to/file.ext/" + * resolvePath("/path", "dir", "..", "to", "file.ext") === "path/to/file.ext" + * ``` + */ + function resolvePath(path) { + var paths = []; + for (var _i = 1; _i < arguments.length; _i++) { + paths[_i - 1] = arguments[_i]; + } + return normalizePath(ts.some(paths) ? combinePaths.apply(void 0, __spreadArrays([path], paths)) : normalizeSlashes(path)); + } + ts.resolvePath = resolvePath; + /** + * Parse a path into an array containing a root component (at index 0) and zero or more path + * components (at indices > 0). The result is normalized. + * If the path is relative, the root component is `""`. + * If the path is absolute, the root component includes the first path separator (`/`). + * + * ```ts + * getNormalizedPathComponents("to/dir/../file.ext", "/path/") === ["/", "path", "to", "file.ext"] + * ``` + */ + function getNormalizedPathComponents(path, currentDirectory) { + return reducePathComponents(getPathComponents(path, currentDirectory)); + } + ts.getNormalizedPathComponents = getNormalizedPathComponents; + function getNormalizedAbsolutePath(fileName, currentDirectory) { + return getPathFromPathComponents(getNormalizedPathComponents(fileName, currentDirectory)); + } + ts.getNormalizedAbsolutePath = getNormalizedAbsolutePath; + function normalizePath(path) { + path = normalizeSlashes(path); + var normalized = getPathFromPathComponents(reducePathComponents(getPathComponents(path))); + return normalized && hasTrailingDirectorySeparator(path) ? ensureTrailingDirectorySeparator(normalized) : normalized; + } + ts.normalizePath = normalizePath; + function getPathWithoutRoot(pathComponents) { + if (pathComponents.length === 0) + return ""; + return pathComponents.slice(1).join(ts.directorySeparator); + } + function getNormalizedAbsolutePathWithoutRoot(fileName, currentDirectory) { + return getPathWithoutRoot(getNormalizedPathComponents(fileName, currentDirectory)); + } + ts.getNormalizedAbsolutePathWithoutRoot = getNormalizedAbsolutePathWithoutRoot; + function toPath(fileName, basePath, getCanonicalFileName) { + var nonCanonicalizedPath = isRootedDiskPath(fileName) + ? normalizePath(fileName) + : getNormalizedAbsolutePath(fileName, basePath); + return getCanonicalFileName(nonCanonicalizedPath); + } + ts.toPath = toPath; + function normalizePathAndParts(path) { + path = normalizeSlashes(path); + var _a = reducePathComponents(getPathComponents(path)), root = _a[0], parts = _a.slice(1); + if (parts.length) { + var joinedParts = root + parts.join(ts.directorySeparator); + return { path: hasTrailingDirectorySeparator(path) ? ensureTrailingDirectorySeparator(joinedParts) : joinedParts, parts: parts }; + } + else { + return { path: root, parts: parts }; + } + } + ts.normalizePathAndParts = normalizePathAndParts; + function removeTrailingDirectorySeparator(path) { + if (hasTrailingDirectorySeparator(path)) { + return path.substr(0, path.length - 1); + } + return path; + } + ts.removeTrailingDirectorySeparator = removeTrailingDirectorySeparator; + function ensureTrailingDirectorySeparator(path) { + if (!hasTrailingDirectorySeparator(path)) { + return path + ts.directorySeparator; + } + return path; + } + ts.ensureTrailingDirectorySeparator = ensureTrailingDirectorySeparator; + /** + * Ensures a path is either absolute (prefixed with `/` or `c:`) or dot-relative (prefixed + * with `./` or `../`) so as not to be confused with an unprefixed module name. + * + * ```ts + * ensurePathIsNonModuleName("/path/to/file.ext") === "/path/to/file.ext" + * ensurePathIsNonModuleName("./path/to/file.ext") === "./path/to/file.ext" + * ensurePathIsNonModuleName("../path/to/file.ext") === "../path/to/file.ext" + * ensurePathIsNonModuleName("path/to/file.ext") === "./path/to/file.ext" + * ``` + */ + function ensurePathIsNonModuleName(path) { + return !pathIsAbsolute(path) && !pathIsRelative(path) ? "./" + path : path; + } + ts.ensurePathIsNonModuleName = ensurePathIsNonModuleName; + function changeAnyExtension(path, ext, extensions, ignoreCase) { + var pathext = extensions !== undefined && ignoreCase !== undefined ? getAnyExtensionFromPath(path, extensions, ignoreCase) : getAnyExtensionFromPath(path); + return pathext ? path.slice(0, path.length - pathext.length) + (ts.startsWith(ext, ".") ? ext : "." + ext) : path; + } + ts.changeAnyExtension = changeAnyExtension; + //// Path Comparisons + // check path for these segments: '', '.'. '..' + var relativePathSegmentRegExp = /(^|\/)\.{0,2}($|\/)/; + function comparePathsWorker(a, b, componentComparer) { + if (a === b) + return 0 /* EqualTo */; + if (a === undefined) + return -1 /* LessThan */; + if (b === undefined) + return 1 /* GreaterThan */; + // NOTE: Performance optimization - shortcut if the root segments differ as there would be no + // need to perform path reduction. + var aRoot = a.substring(0, getRootLength(a)); + var bRoot = b.substring(0, getRootLength(b)); + var result = ts.compareStringsCaseInsensitive(aRoot, bRoot); + if (result !== 0 /* EqualTo */) { + return result; + } + // NOTE: Performance optimization - shortcut if there are no relative path segments in + // the non-root portion of the path + var aRest = a.substring(aRoot.length); + var bRest = b.substring(bRoot.length); + if (!relativePathSegmentRegExp.test(aRest) && !relativePathSegmentRegExp.test(bRest)) { + return componentComparer(aRest, bRest); + } + // The path contains a relative path segment. Normalize the paths and perform a slower component + // by component comparison. + var aComponents = reducePathComponents(getPathComponents(a)); + var bComponents = reducePathComponents(getPathComponents(b)); + var sharedLength = Math.min(aComponents.length, bComponents.length); + for (var i = 1; i < sharedLength; i++) { + var result_1 = componentComparer(aComponents[i], bComponents[i]); + if (result_1 !== 0 /* EqualTo */) { + return result_1; + } + } + return ts.compareValues(aComponents.length, bComponents.length); + } + /** + * Performs a case-sensitive comparison of two paths. Path roots are always compared case-insensitively. + */ + function comparePathsCaseSensitive(a, b) { + return comparePathsWorker(a, b, ts.compareStringsCaseSensitive); + } + ts.comparePathsCaseSensitive = comparePathsCaseSensitive; + /** + * Performs a case-insensitive comparison of two paths. + */ + function comparePathsCaseInsensitive(a, b) { + return comparePathsWorker(a, b, ts.compareStringsCaseInsensitive); + } + ts.comparePathsCaseInsensitive = comparePathsCaseInsensitive; + function comparePaths(a, b, currentDirectory, ignoreCase) { + if (typeof currentDirectory === "string") { + a = combinePaths(currentDirectory, a); + b = combinePaths(currentDirectory, b); + } + else if (typeof currentDirectory === "boolean") { + ignoreCase = currentDirectory; + } + return comparePathsWorker(a, b, ts.getStringComparer(ignoreCase)); + } + ts.comparePaths = comparePaths; + function containsPath(parent, child, currentDirectory, ignoreCase) { + if (typeof currentDirectory === "string") { + parent = combinePaths(currentDirectory, parent); + child = combinePaths(currentDirectory, child); + } + else if (typeof currentDirectory === "boolean") { + ignoreCase = currentDirectory; + } + if (parent === undefined || child === undefined) + return false; + if (parent === child) + return true; + var parentComponents = reducePathComponents(getPathComponents(parent)); + var childComponents = reducePathComponents(getPathComponents(child)); + if (childComponents.length < parentComponents.length) { + return false; + } + var componentEqualityComparer = ignoreCase ? ts.equateStringsCaseInsensitive : ts.equateStringsCaseSensitive; + for (var i = 0; i < parentComponents.length; i++) { + var equalityComparer = i === 0 ? ts.equateStringsCaseInsensitive : componentEqualityComparer; + if (!equalityComparer(parentComponents[i], childComponents[i])) { + return false; + } + } + return true; + } + ts.containsPath = containsPath; + /** + * Determines whether `fileName` starts with the specified `directoryName` using the provided path canonicalization callback. + * Comparison is case-sensitive between the canonical paths. + * + * @deprecated Use `containsPath` if possible. + */ + function startsWithDirectory(fileName, directoryName, getCanonicalFileName) { + var canonicalFileName = getCanonicalFileName(fileName); + var canonicalDirectoryName = getCanonicalFileName(directoryName); + return ts.startsWith(canonicalFileName, canonicalDirectoryName + "/") || ts.startsWith(canonicalFileName, canonicalDirectoryName + "\\"); + } + ts.startsWithDirectory = startsWithDirectory; + //// Relative Paths + function getPathComponentsRelativeTo(from, to, stringEqualityComparer, getCanonicalFileName) { + var fromComponents = reducePathComponents(getPathComponents(from)); + var toComponents = reducePathComponents(getPathComponents(to)); + var start; + for (start = 0; start < fromComponents.length && start < toComponents.length; start++) { + var fromComponent = getCanonicalFileName(fromComponents[start]); + var toComponent = getCanonicalFileName(toComponents[start]); + var comparer = start === 0 ? ts.equateStringsCaseInsensitive : stringEqualityComparer; + if (!comparer(fromComponent, toComponent)) + break; + } + if (start === 0) { + return toComponents; + } + var components = toComponents.slice(start); + var relative = []; + for (; start < fromComponents.length; start++) { + relative.push(".."); + } + return __spreadArrays([""], relative, components); + } + ts.getPathComponentsRelativeTo = getPathComponentsRelativeTo; + function getRelativePathFromDirectory(fromDirectory, to, getCanonicalFileNameOrIgnoreCase) { + ts.Debug.assert((getRootLength(fromDirectory) > 0) === (getRootLength(to) > 0), "Paths must either both be absolute or both be relative"); + var getCanonicalFileName = typeof getCanonicalFileNameOrIgnoreCase === "function" ? getCanonicalFileNameOrIgnoreCase : ts.identity; + var ignoreCase = typeof getCanonicalFileNameOrIgnoreCase === "boolean" ? getCanonicalFileNameOrIgnoreCase : false; + var pathComponents = getPathComponentsRelativeTo(fromDirectory, to, ignoreCase ? ts.equateStringsCaseInsensitive : ts.equateStringsCaseSensitive, getCanonicalFileName); + return getPathFromPathComponents(pathComponents); + } + ts.getRelativePathFromDirectory = getRelativePathFromDirectory; + function convertToRelativePath(absoluteOrRelativePath, basePath, getCanonicalFileName) { + return !isRootedDiskPath(absoluteOrRelativePath) + ? absoluteOrRelativePath + : getRelativePathToDirectoryOrUrl(basePath, absoluteOrRelativePath, basePath, getCanonicalFileName, /*isAbsolutePathAnUrl*/ false); + } + ts.convertToRelativePath = convertToRelativePath; + function getRelativePathFromFile(from, to, getCanonicalFileName) { + return ensurePathIsNonModuleName(getRelativePathFromDirectory(getDirectoryPath(from), to, getCanonicalFileName)); + } + ts.getRelativePathFromFile = getRelativePathFromFile; + function getRelativePathToDirectoryOrUrl(directoryPathOrUrl, relativeOrAbsolutePath, currentDirectory, getCanonicalFileName, isAbsolutePathAnUrl) { + var pathComponents = getPathComponentsRelativeTo(resolvePath(currentDirectory, directoryPathOrUrl), resolvePath(currentDirectory, relativeOrAbsolutePath), ts.equateStringsCaseSensitive, getCanonicalFileName); + var firstComponent = pathComponents[0]; + if (isAbsolutePathAnUrl && isRootedDiskPath(firstComponent)) { + var prefix = firstComponent.charAt(0) === ts.directorySeparator ? "file://" : "file:///"; + pathComponents[0] = prefix + firstComponent; + } + return getPathFromPathComponents(pathComponents); + } + ts.getRelativePathToDirectoryOrUrl = getRelativePathToDirectoryOrUrl; + function forEachAncestorDirectory(directory, callback) { + while (true) { + var result = callback(directory); + if (result !== undefined) { + return result; + } + var parentPath = getDirectoryPath(directory); + if (parentPath === directory) { + return undefined; + } + directory = parentPath; + } + } + ts.forEachAncestorDirectory = forEachAncestorDirectory; + function isNodeModulesDirectory(dirPath) { + return ts.endsWith(dirPath, "/node_modules"); + } + ts.isNodeModulesDirectory = isNodeModulesDirectory; +})(ts || (ts = {})); +// +// generated from './diagnosticInformationMap.generated.ts' by 'src/compiler' +/* @internal */ +var ts; +(function (ts) { + function diag(code, category, key, message, reportsUnnecessary, elidedInCompatabilityPyramid) { + return { code: code, category: category, key: key, message: message, reportsUnnecessary: reportsUnnecessary, elidedInCompatabilityPyramid: elidedInCompatabilityPyramid }; + } + ts.Diagnostics = { + Unterminated_string_literal: diag(1002, ts.DiagnosticCategory.Error, "Unterminated_string_literal_1002", "Unterminated string literal."), + Identifier_expected: diag(1003, ts.DiagnosticCategory.Error, "Identifier_expected_1003", "Identifier expected."), + _0_expected: diag(1005, ts.DiagnosticCategory.Error, "_0_expected_1005", "'{0}' expected."), + A_file_cannot_have_a_reference_to_itself: diag(1006, ts.DiagnosticCategory.Error, "A_file_cannot_have_a_reference_to_itself_1006", "A file cannot have a reference to itself."), + The_parser_expected_to_find_a_to_match_the_token_here: diag(1007, ts.DiagnosticCategory.Error, "The_parser_expected_to_find_a_to_match_the_token_here_1007", "The parser expected to find a '}' to match the '{' token here."), + Trailing_comma_not_allowed: diag(1009, ts.DiagnosticCategory.Error, "Trailing_comma_not_allowed_1009", "Trailing comma not allowed."), + Asterisk_Slash_expected: diag(1010, ts.DiagnosticCategory.Error, "Asterisk_Slash_expected_1010", "'*/' expected."), + An_element_access_expression_should_take_an_argument: diag(1011, ts.DiagnosticCategory.Error, "An_element_access_expression_should_take_an_argument_1011", "An element access expression should take an argument."), + Unexpected_token: diag(1012, ts.DiagnosticCategory.Error, "Unexpected_token_1012", "Unexpected token."), + A_rest_parameter_or_binding_pattern_may_not_have_a_trailing_comma: diag(1013, ts.DiagnosticCategory.Error, "A_rest_parameter_or_binding_pattern_may_not_have_a_trailing_comma_1013", "A rest parameter or binding pattern may not have a trailing comma."), + A_rest_parameter_must_be_last_in_a_parameter_list: diag(1014, ts.DiagnosticCategory.Error, "A_rest_parameter_must_be_last_in_a_parameter_list_1014", "A rest parameter must be last in a parameter list."), + Parameter_cannot_have_question_mark_and_initializer: diag(1015, ts.DiagnosticCategory.Error, "Parameter_cannot_have_question_mark_and_initializer_1015", "Parameter cannot have question mark and initializer."), + A_required_parameter_cannot_follow_an_optional_parameter: diag(1016, ts.DiagnosticCategory.Error, "A_required_parameter_cannot_follow_an_optional_parameter_1016", "A required parameter cannot follow an optional parameter."), + An_index_signature_cannot_have_a_rest_parameter: diag(1017, ts.DiagnosticCategory.Error, "An_index_signature_cannot_have_a_rest_parameter_1017", "An index signature cannot have a rest parameter."), + An_index_signature_parameter_cannot_have_an_accessibility_modifier: diag(1018, ts.DiagnosticCategory.Error, "An_index_signature_parameter_cannot_have_an_accessibility_modifier_1018", "An index signature parameter cannot have an accessibility modifier."), + An_index_signature_parameter_cannot_have_a_question_mark: diag(1019, ts.DiagnosticCategory.Error, "An_index_signature_parameter_cannot_have_a_question_mark_1019", "An index signature parameter cannot have a question mark."), + An_index_signature_parameter_cannot_have_an_initializer: diag(1020, ts.DiagnosticCategory.Error, "An_index_signature_parameter_cannot_have_an_initializer_1020", "An index signature parameter cannot have an initializer."), + An_index_signature_must_have_a_type_annotation: diag(1021, ts.DiagnosticCategory.Error, "An_index_signature_must_have_a_type_annotation_1021", "An index signature must have a type annotation."), + An_index_signature_parameter_must_have_a_type_annotation: diag(1022, ts.DiagnosticCategory.Error, "An_index_signature_parameter_must_have_a_type_annotation_1022", "An index signature parameter must have a type annotation."), + An_index_signature_parameter_type_must_be_either_string_or_number: diag(1023, ts.DiagnosticCategory.Error, "An_index_signature_parameter_type_must_be_either_string_or_number_1023", "An index signature parameter type must be either 'string' or 'number'."), + readonly_modifier_can_only_appear_on_a_property_declaration_or_index_signature: diag(1024, ts.DiagnosticCategory.Error, "readonly_modifier_can_only_appear_on_a_property_declaration_or_index_signature_1024", "'readonly' modifier can only appear on a property declaration or index signature."), + An_index_signature_cannot_have_a_trailing_comma: diag(1025, ts.DiagnosticCategory.Error, "An_index_signature_cannot_have_a_trailing_comma_1025", "An index signature cannot have a trailing comma."), + Accessibility_modifier_already_seen: diag(1028, ts.DiagnosticCategory.Error, "Accessibility_modifier_already_seen_1028", "Accessibility modifier already seen."), + _0_modifier_must_precede_1_modifier: diag(1029, ts.DiagnosticCategory.Error, "_0_modifier_must_precede_1_modifier_1029", "'{0}' modifier must precede '{1}' modifier."), + _0_modifier_already_seen: diag(1030, ts.DiagnosticCategory.Error, "_0_modifier_already_seen_1030", "'{0}' modifier already seen."), + _0_modifier_cannot_appear_on_a_class_element: diag(1031, ts.DiagnosticCategory.Error, "_0_modifier_cannot_appear_on_a_class_element_1031", "'{0}' modifier cannot appear on a class element."), + super_must_be_followed_by_an_argument_list_or_member_access: diag(1034, ts.DiagnosticCategory.Error, "super_must_be_followed_by_an_argument_list_or_member_access_1034", "'super' must be followed by an argument list or member access."), + Only_ambient_modules_can_use_quoted_names: diag(1035, ts.DiagnosticCategory.Error, "Only_ambient_modules_can_use_quoted_names_1035", "Only ambient modules can use quoted names."), + Statements_are_not_allowed_in_ambient_contexts: diag(1036, ts.DiagnosticCategory.Error, "Statements_are_not_allowed_in_ambient_contexts_1036", "Statements are not allowed in ambient contexts."), + A_declare_modifier_cannot_be_used_in_an_already_ambient_context: diag(1038, ts.DiagnosticCategory.Error, "A_declare_modifier_cannot_be_used_in_an_already_ambient_context_1038", "A 'declare' modifier cannot be used in an already ambient context."), + Initializers_are_not_allowed_in_ambient_contexts: diag(1039, ts.DiagnosticCategory.Error, "Initializers_are_not_allowed_in_ambient_contexts_1039", "Initializers are not allowed in ambient contexts."), + _0_modifier_cannot_be_used_in_an_ambient_context: diag(1040, ts.DiagnosticCategory.Error, "_0_modifier_cannot_be_used_in_an_ambient_context_1040", "'{0}' modifier cannot be used in an ambient context."), + _0_modifier_cannot_be_used_with_a_class_declaration: diag(1041, ts.DiagnosticCategory.Error, "_0_modifier_cannot_be_used_with_a_class_declaration_1041", "'{0}' modifier cannot be used with a class declaration."), + _0_modifier_cannot_be_used_here: diag(1042, ts.DiagnosticCategory.Error, "_0_modifier_cannot_be_used_here_1042", "'{0}' modifier cannot be used here."), + _0_modifier_cannot_appear_on_a_data_property: diag(1043, ts.DiagnosticCategory.Error, "_0_modifier_cannot_appear_on_a_data_property_1043", "'{0}' modifier cannot appear on a data property."), + _0_modifier_cannot_appear_on_a_module_or_namespace_element: diag(1044, ts.DiagnosticCategory.Error, "_0_modifier_cannot_appear_on_a_module_or_namespace_element_1044", "'{0}' modifier cannot appear on a module or namespace element."), + A_0_modifier_cannot_be_used_with_an_interface_declaration: diag(1045, ts.DiagnosticCategory.Error, "A_0_modifier_cannot_be_used_with_an_interface_declaration_1045", "A '{0}' modifier cannot be used with an interface declaration."), + Top_level_declarations_in_d_ts_files_must_start_with_either_a_declare_or_export_modifier: diag(1046, ts.DiagnosticCategory.Error, "Top_level_declarations_in_d_ts_files_must_start_with_either_a_declare_or_export_modifier_1046", "Top-level declarations in .d.ts files must start with either a 'declare' or 'export' modifier."), + A_rest_parameter_cannot_be_optional: diag(1047, ts.DiagnosticCategory.Error, "A_rest_parameter_cannot_be_optional_1047", "A rest parameter cannot be optional."), + A_rest_parameter_cannot_have_an_initializer: diag(1048, ts.DiagnosticCategory.Error, "A_rest_parameter_cannot_have_an_initializer_1048", "A rest parameter cannot have an initializer."), + A_set_accessor_must_have_exactly_one_parameter: diag(1049, ts.DiagnosticCategory.Error, "A_set_accessor_must_have_exactly_one_parameter_1049", "A 'set' accessor must have exactly one parameter."), + A_set_accessor_cannot_have_an_optional_parameter: diag(1051, ts.DiagnosticCategory.Error, "A_set_accessor_cannot_have_an_optional_parameter_1051", "A 'set' accessor cannot have an optional parameter."), + A_set_accessor_parameter_cannot_have_an_initializer: diag(1052, ts.DiagnosticCategory.Error, "A_set_accessor_parameter_cannot_have_an_initializer_1052", "A 'set' accessor parameter cannot have an initializer."), + A_set_accessor_cannot_have_rest_parameter: diag(1053, ts.DiagnosticCategory.Error, "A_set_accessor_cannot_have_rest_parameter_1053", "A 'set' accessor cannot have rest parameter."), + A_get_accessor_cannot_have_parameters: diag(1054, ts.DiagnosticCategory.Error, "A_get_accessor_cannot_have_parameters_1054", "A 'get' accessor cannot have parameters."), + Type_0_is_not_a_valid_async_function_return_type_in_ES5_SlashES3_because_it_does_not_refer_to_a_Promise_compatible_constructor_value: diag(1055, ts.DiagnosticCategory.Error, "Type_0_is_not_a_valid_async_function_return_type_in_ES5_SlashES3_because_it_does_not_refer_to_a_Prom_1055", "Type '{0}' is not a valid async function return type in ES5/ES3 because it does not refer to a Promise-compatible constructor value."), + Accessors_are_only_available_when_targeting_ECMAScript_5_and_higher: diag(1056, ts.DiagnosticCategory.Error, "Accessors_are_only_available_when_targeting_ECMAScript_5_and_higher_1056", "Accessors are only available when targeting ECMAScript 5 and higher."), + An_async_function_or_method_must_have_a_valid_awaitable_return_type: diag(1057, ts.DiagnosticCategory.Error, "An_async_function_or_method_must_have_a_valid_awaitable_return_type_1057", "An async function or method must have a valid awaitable return type."), + The_return_type_of_an_async_function_must_either_be_a_valid_promise_or_must_not_contain_a_callable_then_member: diag(1058, ts.DiagnosticCategory.Error, "The_return_type_of_an_async_function_must_either_be_a_valid_promise_or_must_not_contain_a_callable_t_1058", "The return type of an async function must either be a valid promise or must not contain a callable 'then' member."), + A_promise_must_have_a_then_method: diag(1059, ts.DiagnosticCategory.Error, "A_promise_must_have_a_then_method_1059", "A promise must have a 'then' method."), + The_first_parameter_of_the_then_method_of_a_promise_must_be_a_callback: diag(1060, ts.DiagnosticCategory.Error, "The_first_parameter_of_the_then_method_of_a_promise_must_be_a_callback_1060", "The first parameter of the 'then' method of a promise must be a callback."), + Enum_member_must_have_initializer: diag(1061, ts.DiagnosticCategory.Error, "Enum_member_must_have_initializer_1061", "Enum member must have initializer."), + Type_is_referenced_directly_or_indirectly_in_the_fulfillment_callback_of_its_own_then_method: diag(1062, ts.DiagnosticCategory.Error, "Type_is_referenced_directly_or_indirectly_in_the_fulfillment_callback_of_its_own_then_method_1062", "Type is referenced directly or indirectly in the fulfillment callback of its own 'then' method."), + An_export_assignment_cannot_be_used_in_a_namespace: diag(1063, ts.DiagnosticCategory.Error, "An_export_assignment_cannot_be_used_in_a_namespace_1063", "An export assignment cannot be used in a namespace."), + The_return_type_of_an_async_function_or_method_must_be_the_global_Promise_T_type: diag(1064, ts.DiagnosticCategory.Error, "The_return_type_of_an_async_function_or_method_must_be_the_global_Promise_T_type_1064", "The return type of an async function or method must be the global Promise type."), + In_ambient_enum_declarations_member_initializer_must_be_constant_expression: diag(1066, ts.DiagnosticCategory.Error, "In_ambient_enum_declarations_member_initializer_must_be_constant_expression_1066", "In ambient enum declarations member initializer must be constant expression."), + Unexpected_token_A_constructor_method_accessor_or_property_was_expected: diag(1068, ts.DiagnosticCategory.Error, "Unexpected_token_A_constructor_method_accessor_or_property_was_expected_1068", "Unexpected token. A constructor, method, accessor, or property was expected."), + Unexpected_token_A_type_parameter_name_was_expected_without_curly_braces: diag(1069, ts.DiagnosticCategory.Error, "Unexpected_token_A_type_parameter_name_was_expected_without_curly_braces_1069", "Unexpected token. A type parameter name was expected without curly braces."), + _0_modifier_cannot_appear_on_a_type_member: diag(1070, ts.DiagnosticCategory.Error, "_0_modifier_cannot_appear_on_a_type_member_1070", "'{0}' modifier cannot appear on a type member."), + _0_modifier_cannot_appear_on_an_index_signature: diag(1071, ts.DiagnosticCategory.Error, "_0_modifier_cannot_appear_on_an_index_signature_1071", "'{0}' modifier cannot appear on an index signature."), + A_0_modifier_cannot_be_used_with_an_import_declaration: diag(1079, ts.DiagnosticCategory.Error, "A_0_modifier_cannot_be_used_with_an_import_declaration_1079", "A '{0}' modifier cannot be used with an import declaration."), + Invalid_reference_directive_syntax: diag(1084, ts.DiagnosticCategory.Error, "Invalid_reference_directive_syntax_1084", "Invalid 'reference' directive syntax."), + Octal_literals_are_not_available_when_targeting_ECMAScript_5_and_higher_Use_the_syntax_0: diag(1085, ts.DiagnosticCategory.Error, "Octal_literals_are_not_available_when_targeting_ECMAScript_5_and_higher_Use_the_syntax_0_1085", "Octal literals are not available when targeting ECMAScript 5 and higher. Use the syntax '{0}'."), + _0_modifier_cannot_appear_on_a_constructor_declaration: diag(1089, ts.DiagnosticCategory.Error, "_0_modifier_cannot_appear_on_a_constructor_declaration_1089", "'{0}' modifier cannot appear on a constructor declaration."), + _0_modifier_cannot_appear_on_a_parameter: diag(1090, ts.DiagnosticCategory.Error, "_0_modifier_cannot_appear_on_a_parameter_1090", "'{0}' modifier cannot appear on a parameter."), + Only_a_single_variable_declaration_is_allowed_in_a_for_in_statement: diag(1091, ts.DiagnosticCategory.Error, "Only_a_single_variable_declaration_is_allowed_in_a_for_in_statement_1091", "Only a single variable declaration is allowed in a 'for...in' statement."), + Type_parameters_cannot_appear_on_a_constructor_declaration: diag(1092, ts.DiagnosticCategory.Error, "Type_parameters_cannot_appear_on_a_constructor_declaration_1092", "Type parameters cannot appear on a constructor declaration."), + Type_annotation_cannot_appear_on_a_constructor_declaration: diag(1093, ts.DiagnosticCategory.Error, "Type_annotation_cannot_appear_on_a_constructor_declaration_1093", "Type annotation cannot appear on a constructor declaration."), + An_accessor_cannot_have_type_parameters: diag(1094, ts.DiagnosticCategory.Error, "An_accessor_cannot_have_type_parameters_1094", "An accessor cannot have type parameters."), + A_set_accessor_cannot_have_a_return_type_annotation: diag(1095, ts.DiagnosticCategory.Error, "A_set_accessor_cannot_have_a_return_type_annotation_1095", "A 'set' accessor cannot have a return type annotation."), + An_index_signature_must_have_exactly_one_parameter: diag(1096, ts.DiagnosticCategory.Error, "An_index_signature_must_have_exactly_one_parameter_1096", "An index signature must have exactly one parameter."), + _0_list_cannot_be_empty: diag(1097, ts.DiagnosticCategory.Error, "_0_list_cannot_be_empty_1097", "'{0}' list cannot be empty."), + Type_parameter_list_cannot_be_empty: diag(1098, ts.DiagnosticCategory.Error, "Type_parameter_list_cannot_be_empty_1098", "Type parameter list cannot be empty."), + Type_argument_list_cannot_be_empty: diag(1099, ts.DiagnosticCategory.Error, "Type_argument_list_cannot_be_empty_1099", "Type argument list cannot be empty."), + Invalid_use_of_0_in_strict_mode: diag(1100, ts.DiagnosticCategory.Error, "Invalid_use_of_0_in_strict_mode_1100", "Invalid use of '{0}' in strict mode."), + with_statements_are_not_allowed_in_strict_mode: diag(1101, ts.DiagnosticCategory.Error, "with_statements_are_not_allowed_in_strict_mode_1101", "'with' statements are not allowed in strict mode."), + delete_cannot_be_called_on_an_identifier_in_strict_mode: diag(1102, ts.DiagnosticCategory.Error, "delete_cannot_be_called_on_an_identifier_in_strict_mode_1102", "'delete' cannot be called on an identifier in strict mode."), + A_for_await_of_statement_is_only_allowed_within_an_async_function_or_async_generator: diag(1103, ts.DiagnosticCategory.Error, "A_for_await_of_statement_is_only_allowed_within_an_async_function_or_async_generator_1103", "A 'for-await-of' statement is only allowed within an async function or async generator."), + A_continue_statement_can_only_be_used_within_an_enclosing_iteration_statement: diag(1104, ts.DiagnosticCategory.Error, "A_continue_statement_can_only_be_used_within_an_enclosing_iteration_statement_1104", "A 'continue' statement can only be used within an enclosing iteration statement."), + A_break_statement_can_only_be_used_within_an_enclosing_iteration_or_switch_statement: diag(1105, ts.DiagnosticCategory.Error, "A_break_statement_can_only_be_used_within_an_enclosing_iteration_or_switch_statement_1105", "A 'break' statement can only be used within an enclosing iteration or switch statement."), + Jump_target_cannot_cross_function_boundary: diag(1107, ts.DiagnosticCategory.Error, "Jump_target_cannot_cross_function_boundary_1107", "Jump target cannot cross function boundary."), + A_return_statement_can_only_be_used_within_a_function_body: diag(1108, ts.DiagnosticCategory.Error, "A_return_statement_can_only_be_used_within_a_function_body_1108", "A 'return' statement can only be used within a function body."), + Expression_expected: diag(1109, ts.DiagnosticCategory.Error, "Expression_expected_1109", "Expression expected."), + Type_expected: diag(1110, ts.DiagnosticCategory.Error, "Type_expected_1110", "Type expected."), + A_default_clause_cannot_appear_more_than_once_in_a_switch_statement: diag(1113, ts.DiagnosticCategory.Error, "A_default_clause_cannot_appear_more_than_once_in_a_switch_statement_1113", "A 'default' clause cannot appear more than once in a 'switch' statement."), + Duplicate_label_0: diag(1114, ts.DiagnosticCategory.Error, "Duplicate_label_0_1114", "Duplicate label '{0}'."), + A_continue_statement_can_only_jump_to_a_label_of_an_enclosing_iteration_statement: diag(1115, ts.DiagnosticCategory.Error, "A_continue_statement_can_only_jump_to_a_label_of_an_enclosing_iteration_statement_1115", "A 'continue' statement can only jump to a label of an enclosing iteration statement."), + A_break_statement_can_only_jump_to_a_label_of_an_enclosing_statement: diag(1116, ts.DiagnosticCategory.Error, "A_break_statement_can_only_jump_to_a_label_of_an_enclosing_statement_1116", "A 'break' statement can only jump to a label of an enclosing statement."), + An_object_literal_cannot_have_multiple_properties_with_the_same_name_in_strict_mode: diag(1117, ts.DiagnosticCategory.Error, "An_object_literal_cannot_have_multiple_properties_with_the_same_name_in_strict_mode_1117", "An object literal cannot have multiple properties with the same name in strict mode."), + An_object_literal_cannot_have_multiple_get_Slashset_accessors_with_the_same_name: diag(1118, ts.DiagnosticCategory.Error, "An_object_literal_cannot_have_multiple_get_Slashset_accessors_with_the_same_name_1118", "An object literal cannot have multiple get/set accessors with the same name."), + An_object_literal_cannot_have_property_and_accessor_with_the_same_name: diag(1119, ts.DiagnosticCategory.Error, "An_object_literal_cannot_have_property_and_accessor_with_the_same_name_1119", "An object literal cannot have property and accessor with the same name."), + An_export_assignment_cannot_have_modifiers: diag(1120, ts.DiagnosticCategory.Error, "An_export_assignment_cannot_have_modifiers_1120", "An export assignment cannot have modifiers."), + Octal_literals_are_not_allowed_in_strict_mode: diag(1121, ts.DiagnosticCategory.Error, "Octal_literals_are_not_allowed_in_strict_mode_1121", "Octal literals are not allowed in strict mode."), + Variable_declaration_list_cannot_be_empty: diag(1123, ts.DiagnosticCategory.Error, "Variable_declaration_list_cannot_be_empty_1123", "Variable declaration list cannot be empty."), + Digit_expected: diag(1124, ts.DiagnosticCategory.Error, "Digit_expected_1124", "Digit expected."), + Hexadecimal_digit_expected: diag(1125, ts.DiagnosticCategory.Error, "Hexadecimal_digit_expected_1125", "Hexadecimal digit expected."), + Unexpected_end_of_text: diag(1126, ts.DiagnosticCategory.Error, "Unexpected_end_of_text_1126", "Unexpected end of text."), + Invalid_character: diag(1127, ts.DiagnosticCategory.Error, "Invalid_character_1127", "Invalid character."), + Declaration_or_statement_expected: diag(1128, ts.DiagnosticCategory.Error, "Declaration_or_statement_expected_1128", "Declaration or statement expected."), + Statement_expected: diag(1129, ts.DiagnosticCategory.Error, "Statement_expected_1129", "Statement expected."), + case_or_default_expected: diag(1130, ts.DiagnosticCategory.Error, "case_or_default_expected_1130", "'case' or 'default' expected."), + Property_or_signature_expected: diag(1131, ts.DiagnosticCategory.Error, "Property_or_signature_expected_1131", "Property or signature expected."), + Enum_member_expected: diag(1132, ts.DiagnosticCategory.Error, "Enum_member_expected_1132", "Enum member expected."), + Variable_declaration_expected: diag(1134, ts.DiagnosticCategory.Error, "Variable_declaration_expected_1134", "Variable declaration expected."), + Argument_expression_expected: diag(1135, ts.DiagnosticCategory.Error, "Argument_expression_expected_1135", "Argument expression expected."), + Property_assignment_expected: diag(1136, ts.DiagnosticCategory.Error, "Property_assignment_expected_1136", "Property assignment expected."), + Expression_or_comma_expected: diag(1137, ts.DiagnosticCategory.Error, "Expression_or_comma_expected_1137", "Expression or comma expected."), + Parameter_declaration_expected: diag(1138, ts.DiagnosticCategory.Error, "Parameter_declaration_expected_1138", "Parameter declaration expected."), + Type_parameter_declaration_expected: diag(1139, ts.DiagnosticCategory.Error, "Type_parameter_declaration_expected_1139", "Type parameter declaration expected."), + Type_argument_expected: diag(1140, ts.DiagnosticCategory.Error, "Type_argument_expected_1140", "Type argument expected."), + String_literal_expected: diag(1141, ts.DiagnosticCategory.Error, "String_literal_expected_1141", "String literal expected."), + Line_break_not_permitted_here: diag(1142, ts.DiagnosticCategory.Error, "Line_break_not_permitted_here_1142", "Line break not permitted here."), + or_expected: diag(1144, ts.DiagnosticCategory.Error, "or_expected_1144", "'{' or ';' expected."), + Declaration_expected: diag(1146, ts.DiagnosticCategory.Error, "Declaration_expected_1146", "Declaration expected."), + Import_declarations_in_a_namespace_cannot_reference_a_module: diag(1147, ts.DiagnosticCategory.Error, "Import_declarations_in_a_namespace_cannot_reference_a_module_1147", "Import declarations in a namespace cannot reference a module."), + Cannot_use_imports_exports_or_module_augmentations_when_module_is_none: diag(1148, ts.DiagnosticCategory.Error, "Cannot_use_imports_exports_or_module_augmentations_when_module_is_none_1148", "Cannot use imports, exports, or module augmentations when '--module' is 'none'."), + File_name_0_differs_from_already_included_file_name_1_only_in_casing: diag(1149, ts.DiagnosticCategory.Error, "File_name_0_differs_from_already_included_file_name_1_only_in_casing_1149", "File name '{0}' differs from already included file name '{1}' only in casing."), + const_declarations_must_be_initialized: diag(1155, ts.DiagnosticCategory.Error, "const_declarations_must_be_initialized_1155", "'const' declarations must be initialized."), + const_declarations_can_only_be_declared_inside_a_block: diag(1156, ts.DiagnosticCategory.Error, "const_declarations_can_only_be_declared_inside_a_block_1156", "'const' declarations can only be declared inside a block."), + let_declarations_can_only_be_declared_inside_a_block: diag(1157, ts.DiagnosticCategory.Error, "let_declarations_can_only_be_declared_inside_a_block_1157", "'let' declarations can only be declared inside a block."), + Unterminated_template_literal: diag(1160, ts.DiagnosticCategory.Error, "Unterminated_template_literal_1160", "Unterminated template literal."), + Unterminated_regular_expression_literal: diag(1161, ts.DiagnosticCategory.Error, "Unterminated_regular_expression_literal_1161", "Unterminated regular expression literal."), + An_object_member_cannot_be_declared_optional: diag(1162, ts.DiagnosticCategory.Error, "An_object_member_cannot_be_declared_optional_1162", "An object member cannot be declared optional."), + A_yield_expression_is_only_allowed_in_a_generator_body: diag(1163, ts.DiagnosticCategory.Error, "A_yield_expression_is_only_allowed_in_a_generator_body_1163", "A 'yield' expression is only allowed in a generator body."), + Computed_property_names_are_not_allowed_in_enums: diag(1164, ts.DiagnosticCategory.Error, "Computed_property_names_are_not_allowed_in_enums_1164", "Computed property names are not allowed in enums."), + A_computed_property_name_in_an_ambient_context_must_refer_to_an_expression_whose_type_is_a_literal_type_or_a_unique_symbol_type: diag(1165, ts.DiagnosticCategory.Error, "A_computed_property_name_in_an_ambient_context_must_refer_to_an_expression_whose_type_is_a_literal_t_1165", "A computed property name in an ambient context must refer to an expression whose type is a literal type or a 'unique symbol' type."), + A_computed_property_name_in_a_class_property_declaration_must_refer_to_an_expression_whose_type_is_a_literal_type_or_a_unique_symbol_type: diag(1166, ts.DiagnosticCategory.Error, "A_computed_property_name_in_a_class_property_declaration_must_refer_to_an_expression_whose_type_is_a_1166", "A computed property name in a class property declaration must refer to an expression whose type is a literal type or a 'unique symbol' type."), + A_computed_property_name_in_a_method_overload_must_refer_to_an_expression_whose_type_is_a_literal_type_or_a_unique_symbol_type: diag(1168, ts.DiagnosticCategory.Error, "A_computed_property_name_in_a_method_overload_must_refer_to_an_expression_whose_type_is_a_literal_ty_1168", "A computed property name in a method overload must refer to an expression whose type is a literal type or a 'unique symbol' type."), + A_computed_property_name_in_an_interface_must_refer_to_an_expression_whose_type_is_a_literal_type_or_a_unique_symbol_type: diag(1169, ts.DiagnosticCategory.Error, "A_computed_property_name_in_an_interface_must_refer_to_an_expression_whose_type_is_a_literal_type_or_1169", "A computed property name in an interface must refer to an expression whose type is a literal type or a 'unique symbol' type."), + A_computed_property_name_in_a_type_literal_must_refer_to_an_expression_whose_type_is_a_literal_type_or_a_unique_symbol_type: diag(1170, ts.DiagnosticCategory.Error, "A_computed_property_name_in_a_type_literal_must_refer_to_an_expression_whose_type_is_a_literal_type__1170", "A computed property name in a type literal must refer to an expression whose type is a literal type or a 'unique symbol' type."), + A_comma_expression_is_not_allowed_in_a_computed_property_name: diag(1171, ts.DiagnosticCategory.Error, "A_comma_expression_is_not_allowed_in_a_computed_property_name_1171", "A comma expression is not allowed in a computed property name."), + extends_clause_already_seen: diag(1172, ts.DiagnosticCategory.Error, "extends_clause_already_seen_1172", "'extends' clause already seen."), + extends_clause_must_precede_implements_clause: diag(1173, ts.DiagnosticCategory.Error, "extends_clause_must_precede_implements_clause_1173", "'extends' clause must precede 'implements' clause."), + Classes_can_only_extend_a_single_class: diag(1174, ts.DiagnosticCategory.Error, "Classes_can_only_extend_a_single_class_1174", "Classes can only extend a single class."), + implements_clause_already_seen: diag(1175, ts.DiagnosticCategory.Error, "implements_clause_already_seen_1175", "'implements' clause already seen."), + Interface_declaration_cannot_have_implements_clause: diag(1176, ts.DiagnosticCategory.Error, "Interface_declaration_cannot_have_implements_clause_1176", "Interface declaration cannot have 'implements' clause."), + Binary_digit_expected: diag(1177, ts.DiagnosticCategory.Error, "Binary_digit_expected_1177", "Binary digit expected."), + Octal_digit_expected: diag(1178, ts.DiagnosticCategory.Error, "Octal_digit_expected_1178", "Octal digit expected."), + Unexpected_token_expected: diag(1179, ts.DiagnosticCategory.Error, "Unexpected_token_expected_1179", "Unexpected token. '{' expected."), + Property_destructuring_pattern_expected: diag(1180, ts.DiagnosticCategory.Error, "Property_destructuring_pattern_expected_1180", "Property destructuring pattern expected."), + Array_element_destructuring_pattern_expected: diag(1181, ts.DiagnosticCategory.Error, "Array_element_destructuring_pattern_expected_1181", "Array element destructuring pattern expected."), + A_destructuring_declaration_must_have_an_initializer: diag(1182, ts.DiagnosticCategory.Error, "A_destructuring_declaration_must_have_an_initializer_1182", "A destructuring declaration must have an initializer."), + An_implementation_cannot_be_declared_in_ambient_contexts: diag(1183, ts.DiagnosticCategory.Error, "An_implementation_cannot_be_declared_in_ambient_contexts_1183", "An implementation cannot be declared in ambient contexts."), + Modifiers_cannot_appear_here: diag(1184, ts.DiagnosticCategory.Error, "Modifiers_cannot_appear_here_1184", "Modifiers cannot appear here."), + Merge_conflict_marker_encountered: diag(1185, ts.DiagnosticCategory.Error, "Merge_conflict_marker_encountered_1185", "Merge conflict marker encountered."), + A_rest_element_cannot_have_an_initializer: diag(1186, ts.DiagnosticCategory.Error, "A_rest_element_cannot_have_an_initializer_1186", "A rest element cannot have an initializer."), + A_parameter_property_may_not_be_declared_using_a_binding_pattern: diag(1187, ts.DiagnosticCategory.Error, "A_parameter_property_may_not_be_declared_using_a_binding_pattern_1187", "A parameter property may not be declared using a binding pattern."), + Only_a_single_variable_declaration_is_allowed_in_a_for_of_statement: diag(1188, ts.DiagnosticCategory.Error, "Only_a_single_variable_declaration_is_allowed_in_a_for_of_statement_1188", "Only a single variable declaration is allowed in a 'for...of' statement."), + The_variable_declaration_of_a_for_in_statement_cannot_have_an_initializer: diag(1189, ts.DiagnosticCategory.Error, "The_variable_declaration_of_a_for_in_statement_cannot_have_an_initializer_1189", "The variable declaration of a 'for...in' statement cannot have an initializer."), + The_variable_declaration_of_a_for_of_statement_cannot_have_an_initializer: diag(1190, ts.DiagnosticCategory.Error, "The_variable_declaration_of_a_for_of_statement_cannot_have_an_initializer_1190", "The variable declaration of a 'for...of' statement cannot have an initializer."), + An_import_declaration_cannot_have_modifiers: diag(1191, ts.DiagnosticCategory.Error, "An_import_declaration_cannot_have_modifiers_1191", "An import declaration cannot have modifiers."), + Module_0_has_no_default_export: diag(1192, ts.DiagnosticCategory.Error, "Module_0_has_no_default_export_1192", "Module '{0}' has no default export."), + An_export_declaration_cannot_have_modifiers: diag(1193, ts.DiagnosticCategory.Error, "An_export_declaration_cannot_have_modifiers_1193", "An export declaration cannot have modifiers."), + Export_declarations_are_not_permitted_in_a_namespace: diag(1194, ts.DiagnosticCategory.Error, "Export_declarations_are_not_permitted_in_a_namespace_1194", "Export declarations are not permitted in a namespace."), + export_Asterisk_does_not_re_export_a_default: diag(1195, ts.DiagnosticCategory.Error, "export_Asterisk_does_not_re_export_a_default_1195", "'export *' does not re-export a default."), + Catch_clause_variable_cannot_have_a_type_annotation: diag(1196, ts.DiagnosticCategory.Error, "Catch_clause_variable_cannot_have_a_type_annotation_1196", "Catch clause variable cannot have a type annotation."), + Catch_clause_variable_cannot_have_an_initializer: diag(1197, ts.DiagnosticCategory.Error, "Catch_clause_variable_cannot_have_an_initializer_1197", "Catch clause variable cannot have an initializer."), + An_extended_Unicode_escape_value_must_be_between_0x0_and_0x10FFFF_inclusive: diag(1198, ts.DiagnosticCategory.Error, "An_extended_Unicode_escape_value_must_be_between_0x0_and_0x10FFFF_inclusive_1198", "An extended Unicode escape value must be between 0x0 and 0x10FFFF inclusive."), + Unterminated_Unicode_escape_sequence: diag(1199, ts.DiagnosticCategory.Error, "Unterminated_Unicode_escape_sequence_1199", "Unterminated Unicode escape sequence."), + Line_terminator_not_permitted_before_arrow: diag(1200, ts.DiagnosticCategory.Error, "Line_terminator_not_permitted_before_arrow_1200", "Line terminator not permitted before arrow."), + Import_assignment_cannot_be_used_when_targeting_ECMAScript_modules_Consider_using_import_Asterisk_as_ns_from_mod_import_a_from_mod_import_d_from_mod_or_another_module_format_instead: diag(1202, ts.DiagnosticCategory.Error, "Import_assignment_cannot_be_used_when_targeting_ECMAScript_modules_Consider_using_import_Asterisk_as_1202", "Import assignment cannot be used when targeting ECMAScript modules. Consider using 'import * as ns from \"mod\"', 'import {a} from \"mod\"', 'import d from \"mod\"', or another module format instead."), + Export_assignment_cannot_be_used_when_targeting_ECMAScript_modules_Consider_using_export_default_or_another_module_format_instead: diag(1203, ts.DiagnosticCategory.Error, "Export_assignment_cannot_be_used_when_targeting_ECMAScript_modules_Consider_using_export_default_or__1203", "Export assignment cannot be used when targeting ECMAScript modules. Consider using 'export default' or another module format instead."), + Re_exporting_a_type_when_the_isolatedModules_flag_is_provided_requires_using_export_type: diag(1205, ts.DiagnosticCategory.Error, "Re_exporting_a_type_when_the_isolatedModules_flag_is_provided_requires_using_export_type_1205", "Re-exporting a type when the '--isolatedModules' flag is provided requires using 'export type'."), + Decorators_are_not_valid_here: diag(1206, ts.DiagnosticCategory.Error, "Decorators_are_not_valid_here_1206", "Decorators are not valid here."), + Decorators_cannot_be_applied_to_multiple_get_Slashset_accessors_of_the_same_name: diag(1207, ts.DiagnosticCategory.Error, "Decorators_cannot_be_applied_to_multiple_get_Slashset_accessors_of_the_same_name_1207", "Decorators cannot be applied to multiple get/set accessors of the same name."), + All_files_must_be_modules_when_the_isolatedModules_flag_is_provided: diag(1208, ts.DiagnosticCategory.Error, "All_files_must_be_modules_when_the_isolatedModules_flag_is_provided_1208", "All files must be modules when the '--isolatedModules' flag is provided."), + Invalid_use_of_0_Class_definitions_are_automatically_in_strict_mode: diag(1210, ts.DiagnosticCategory.Error, "Invalid_use_of_0_Class_definitions_are_automatically_in_strict_mode_1210", "Invalid use of '{0}'. Class definitions are automatically in strict mode."), + A_class_declaration_without_the_default_modifier_must_have_a_name: diag(1211, ts.DiagnosticCategory.Error, "A_class_declaration_without_the_default_modifier_must_have_a_name_1211", "A class declaration without the 'default' modifier must have a name."), + Identifier_expected_0_is_a_reserved_word_in_strict_mode: diag(1212, ts.DiagnosticCategory.Error, "Identifier_expected_0_is_a_reserved_word_in_strict_mode_1212", "Identifier expected. '{0}' is a reserved word in strict mode."), + Identifier_expected_0_is_a_reserved_word_in_strict_mode_Class_definitions_are_automatically_in_strict_mode: diag(1213, ts.DiagnosticCategory.Error, "Identifier_expected_0_is_a_reserved_word_in_strict_mode_Class_definitions_are_automatically_in_stric_1213", "Identifier expected. '{0}' is a reserved word in strict mode. Class definitions are automatically in strict mode."), + Identifier_expected_0_is_a_reserved_word_in_strict_mode_Modules_are_automatically_in_strict_mode: diag(1214, ts.DiagnosticCategory.Error, "Identifier_expected_0_is_a_reserved_word_in_strict_mode_Modules_are_automatically_in_strict_mode_1214", "Identifier expected. '{0}' is a reserved word in strict mode. Modules are automatically in strict mode."), + Invalid_use_of_0_Modules_are_automatically_in_strict_mode: diag(1215, ts.DiagnosticCategory.Error, "Invalid_use_of_0_Modules_are_automatically_in_strict_mode_1215", "Invalid use of '{0}'. Modules are automatically in strict mode."), + Identifier_expected_esModule_is_reserved_as_an_exported_marker_when_transforming_ECMAScript_modules: diag(1216, ts.DiagnosticCategory.Error, "Identifier_expected_esModule_is_reserved_as_an_exported_marker_when_transforming_ECMAScript_modules_1216", "Identifier expected. '__esModule' is reserved as an exported marker when transforming ECMAScript modules."), + Export_assignment_is_not_supported_when_module_flag_is_system: diag(1218, ts.DiagnosticCategory.Error, "Export_assignment_is_not_supported_when_module_flag_is_system_1218", "Export assignment is not supported when '--module' flag is 'system'."), + Experimental_support_for_decorators_is_a_feature_that_is_subject_to_change_in_a_future_release_Set_the_experimentalDecorators_option_in_your_tsconfig_or_jsconfig_to_remove_this_warning: diag(1219, ts.DiagnosticCategory.Error, "Experimental_support_for_decorators_is_a_feature_that_is_subject_to_change_in_a_future_release_Set_t_1219", "Experimental support for decorators is a feature that is subject to change in a future release. Set the 'experimentalDecorators' option in your 'tsconfig' or 'jsconfig' to remove this warning."), + Generators_are_only_available_when_targeting_ECMAScript_2015_or_higher: diag(1220, ts.DiagnosticCategory.Error, "Generators_are_only_available_when_targeting_ECMAScript_2015_or_higher_1220", "Generators are only available when targeting ECMAScript 2015 or higher."), + Generators_are_not_allowed_in_an_ambient_context: diag(1221, ts.DiagnosticCategory.Error, "Generators_are_not_allowed_in_an_ambient_context_1221", "Generators are not allowed in an ambient context."), + An_overload_signature_cannot_be_declared_as_a_generator: diag(1222, ts.DiagnosticCategory.Error, "An_overload_signature_cannot_be_declared_as_a_generator_1222", "An overload signature cannot be declared as a generator."), + _0_tag_already_specified: diag(1223, ts.DiagnosticCategory.Error, "_0_tag_already_specified_1223", "'{0}' tag already specified."), + Signature_0_must_be_a_type_predicate: diag(1224, ts.DiagnosticCategory.Error, "Signature_0_must_be_a_type_predicate_1224", "Signature '{0}' must be a type predicate."), + Cannot_find_parameter_0: diag(1225, ts.DiagnosticCategory.Error, "Cannot_find_parameter_0_1225", "Cannot find parameter '{0}'."), + Type_predicate_0_is_not_assignable_to_1: diag(1226, ts.DiagnosticCategory.Error, "Type_predicate_0_is_not_assignable_to_1_1226", "Type predicate '{0}' is not assignable to '{1}'."), + Parameter_0_is_not_in_the_same_position_as_parameter_1: diag(1227, ts.DiagnosticCategory.Error, "Parameter_0_is_not_in_the_same_position_as_parameter_1_1227", "Parameter '{0}' is not in the same position as parameter '{1}'."), + A_type_predicate_is_only_allowed_in_return_type_position_for_functions_and_methods: diag(1228, ts.DiagnosticCategory.Error, "A_type_predicate_is_only_allowed_in_return_type_position_for_functions_and_methods_1228", "A type predicate is only allowed in return type position for functions and methods."), + A_type_predicate_cannot_reference_a_rest_parameter: diag(1229, ts.DiagnosticCategory.Error, "A_type_predicate_cannot_reference_a_rest_parameter_1229", "A type predicate cannot reference a rest parameter."), + A_type_predicate_cannot_reference_element_0_in_a_binding_pattern: diag(1230, ts.DiagnosticCategory.Error, "A_type_predicate_cannot_reference_element_0_in_a_binding_pattern_1230", "A type predicate cannot reference element '{0}' in a binding pattern."), + An_export_assignment_can_only_be_used_in_a_module: diag(1231, ts.DiagnosticCategory.Error, "An_export_assignment_can_only_be_used_in_a_module_1231", "An export assignment can only be used in a module."), + An_import_declaration_can_only_be_used_in_a_namespace_or_module: diag(1232, ts.DiagnosticCategory.Error, "An_import_declaration_can_only_be_used_in_a_namespace_or_module_1232", "An import declaration can only be used in a namespace or module."), + An_export_declaration_can_only_be_used_in_a_module: diag(1233, ts.DiagnosticCategory.Error, "An_export_declaration_can_only_be_used_in_a_module_1233", "An export declaration can only be used in a module."), + An_ambient_module_declaration_is_only_allowed_at_the_top_level_in_a_file: diag(1234, ts.DiagnosticCategory.Error, "An_ambient_module_declaration_is_only_allowed_at_the_top_level_in_a_file_1234", "An ambient module declaration is only allowed at the top level in a file."), + A_namespace_declaration_is_only_allowed_in_a_namespace_or_module: diag(1235, ts.DiagnosticCategory.Error, "A_namespace_declaration_is_only_allowed_in_a_namespace_or_module_1235", "A namespace declaration is only allowed in a namespace or module."), + The_return_type_of_a_property_decorator_function_must_be_either_void_or_any: diag(1236, ts.DiagnosticCategory.Error, "The_return_type_of_a_property_decorator_function_must_be_either_void_or_any_1236", "The return type of a property decorator function must be either 'void' or 'any'."), + The_return_type_of_a_parameter_decorator_function_must_be_either_void_or_any: diag(1237, ts.DiagnosticCategory.Error, "The_return_type_of_a_parameter_decorator_function_must_be_either_void_or_any_1237", "The return type of a parameter decorator function must be either 'void' or 'any'."), + Unable_to_resolve_signature_of_class_decorator_when_called_as_an_expression: diag(1238, ts.DiagnosticCategory.Error, "Unable_to_resolve_signature_of_class_decorator_when_called_as_an_expression_1238", "Unable to resolve signature of class decorator when called as an expression."), + Unable_to_resolve_signature_of_parameter_decorator_when_called_as_an_expression: diag(1239, ts.DiagnosticCategory.Error, "Unable_to_resolve_signature_of_parameter_decorator_when_called_as_an_expression_1239", "Unable to resolve signature of parameter decorator when called as an expression."), + Unable_to_resolve_signature_of_property_decorator_when_called_as_an_expression: diag(1240, ts.DiagnosticCategory.Error, "Unable_to_resolve_signature_of_property_decorator_when_called_as_an_expression_1240", "Unable to resolve signature of property decorator when called as an expression."), + Unable_to_resolve_signature_of_method_decorator_when_called_as_an_expression: diag(1241, ts.DiagnosticCategory.Error, "Unable_to_resolve_signature_of_method_decorator_when_called_as_an_expression_1241", "Unable to resolve signature of method decorator when called as an expression."), + abstract_modifier_can_only_appear_on_a_class_method_or_property_declaration: diag(1242, ts.DiagnosticCategory.Error, "abstract_modifier_can_only_appear_on_a_class_method_or_property_declaration_1242", "'abstract' modifier can only appear on a class, method, or property declaration."), + _0_modifier_cannot_be_used_with_1_modifier: diag(1243, ts.DiagnosticCategory.Error, "_0_modifier_cannot_be_used_with_1_modifier_1243", "'{0}' modifier cannot be used with '{1}' modifier."), + Abstract_methods_can_only_appear_within_an_abstract_class: diag(1244, ts.DiagnosticCategory.Error, "Abstract_methods_can_only_appear_within_an_abstract_class_1244", "Abstract methods can only appear within an abstract class."), + Method_0_cannot_have_an_implementation_because_it_is_marked_abstract: diag(1245, ts.DiagnosticCategory.Error, "Method_0_cannot_have_an_implementation_because_it_is_marked_abstract_1245", "Method '{0}' cannot have an implementation because it is marked abstract."), + An_interface_property_cannot_have_an_initializer: diag(1246, ts.DiagnosticCategory.Error, "An_interface_property_cannot_have_an_initializer_1246", "An interface property cannot have an initializer."), + A_type_literal_property_cannot_have_an_initializer: diag(1247, ts.DiagnosticCategory.Error, "A_type_literal_property_cannot_have_an_initializer_1247", "A type literal property cannot have an initializer."), + A_class_member_cannot_have_the_0_keyword: diag(1248, ts.DiagnosticCategory.Error, "A_class_member_cannot_have_the_0_keyword_1248", "A class member cannot have the '{0}' keyword."), + A_decorator_can_only_decorate_a_method_implementation_not_an_overload: diag(1249, ts.DiagnosticCategory.Error, "A_decorator_can_only_decorate_a_method_implementation_not_an_overload_1249", "A decorator can only decorate a method implementation, not an overload."), + Function_declarations_are_not_allowed_inside_blocks_in_strict_mode_when_targeting_ES3_or_ES5: diag(1250, ts.DiagnosticCategory.Error, "Function_declarations_are_not_allowed_inside_blocks_in_strict_mode_when_targeting_ES3_or_ES5_1250", "Function declarations are not allowed inside blocks in strict mode when targeting 'ES3' or 'ES5'."), + Function_declarations_are_not_allowed_inside_blocks_in_strict_mode_when_targeting_ES3_or_ES5_Class_definitions_are_automatically_in_strict_mode: diag(1251, ts.DiagnosticCategory.Error, "Function_declarations_are_not_allowed_inside_blocks_in_strict_mode_when_targeting_ES3_or_ES5_Class_d_1251", "Function declarations are not allowed inside blocks in strict mode when targeting 'ES3' or 'ES5'. Class definitions are automatically in strict mode."), + Function_declarations_are_not_allowed_inside_blocks_in_strict_mode_when_targeting_ES3_or_ES5_Modules_are_automatically_in_strict_mode: diag(1252, ts.DiagnosticCategory.Error, "Function_declarations_are_not_allowed_inside_blocks_in_strict_mode_when_targeting_ES3_or_ES5_Modules_1252", "Function declarations are not allowed inside blocks in strict mode when targeting 'ES3' or 'ES5'. Modules are automatically in strict mode."), + _0_tag_cannot_be_used_independently_as_a_top_level_JSDoc_tag: diag(1253, ts.DiagnosticCategory.Error, "_0_tag_cannot_be_used_independently_as_a_top_level_JSDoc_tag_1253", "'{0}' tag cannot be used independently as a top level JSDoc tag."), + A_const_initializer_in_an_ambient_context_must_be_a_string_or_numeric_literal_or_literal_enum_reference: diag(1254, ts.DiagnosticCategory.Error, "A_const_initializer_in_an_ambient_context_must_be_a_string_or_numeric_literal_or_literal_enum_refere_1254", "A 'const' initializer in an ambient context must be a string or numeric literal or literal enum reference."), + A_definite_assignment_assertion_is_not_permitted_in_this_context: diag(1255, ts.DiagnosticCategory.Error, "A_definite_assignment_assertion_is_not_permitted_in_this_context_1255", "A definite assignment assertion '!' is not permitted in this context."), + A_rest_element_must_be_last_in_a_tuple_type: diag(1256, ts.DiagnosticCategory.Error, "A_rest_element_must_be_last_in_a_tuple_type_1256", "A rest element must be last in a tuple type."), + A_required_element_cannot_follow_an_optional_element: diag(1257, ts.DiagnosticCategory.Error, "A_required_element_cannot_follow_an_optional_element_1257", "A required element cannot follow an optional element."), + Definite_assignment_assertions_can_only_be_used_along_with_a_type_annotation: diag(1258, ts.DiagnosticCategory.Error, "Definite_assignment_assertions_can_only_be_used_along_with_a_type_annotation_1258", "Definite assignment assertions can only be used along with a type annotation."), + Module_0_can_only_be_default_imported_using_the_1_flag: diag(1259, ts.DiagnosticCategory.Error, "Module_0_can_only_be_default_imported_using_the_1_flag_1259", "Module '{0}' can only be default-imported using the '{1}' flag"), + Keywords_cannot_contain_escape_characters: diag(1260, ts.DiagnosticCategory.Error, "Keywords_cannot_contain_escape_characters_1260", "Keywords cannot contain escape characters."), + Already_included_file_name_0_differs_from_file_name_1_only_in_casing: diag(1261, ts.DiagnosticCategory.Error, "Already_included_file_name_0_differs_from_file_name_1_only_in_casing_1261", "Already included file name '{0}' differs from file name '{1}' only in casing."), + with_statements_are_not_allowed_in_an_async_function_block: diag(1300, ts.DiagnosticCategory.Error, "with_statements_are_not_allowed_in_an_async_function_block_1300", "'with' statements are not allowed in an async function block."), + await_expressions_are_only_allowed_within_async_functions_and_at_the_top_levels_of_modules: diag(1308, ts.DiagnosticCategory.Error, "await_expressions_are_only_allowed_within_async_functions_and_at_the_top_levels_of_modules_1308", "'await' expressions are only allowed within async functions and at the top levels of modules."), + can_only_be_used_in_an_object_literal_property_inside_a_destructuring_assignment: diag(1312, ts.DiagnosticCategory.Error, "can_only_be_used_in_an_object_literal_property_inside_a_destructuring_assignment_1312", "'=' can only be used in an object literal property inside a destructuring assignment."), + The_body_of_an_if_statement_cannot_be_the_empty_statement: diag(1313, ts.DiagnosticCategory.Error, "The_body_of_an_if_statement_cannot_be_the_empty_statement_1313", "The body of an 'if' statement cannot be the empty statement."), + Global_module_exports_may_only_appear_in_module_files: diag(1314, ts.DiagnosticCategory.Error, "Global_module_exports_may_only_appear_in_module_files_1314", "Global module exports may only appear in module files."), + Global_module_exports_may_only_appear_in_declaration_files: diag(1315, ts.DiagnosticCategory.Error, "Global_module_exports_may_only_appear_in_declaration_files_1315", "Global module exports may only appear in declaration files."), + Global_module_exports_may_only_appear_at_top_level: diag(1316, ts.DiagnosticCategory.Error, "Global_module_exports_may_only_appear_at_top_level_1316", "Global module exports may only appear at top level."), + A_parameter_property_cannot_be_declared_using_a_rest_parameter: diag(1317, ts.DiagnosticCategory.Error, "A_parameter_property_cannot_be_declared_using_a_rest_parameter_1317", "A parameter property cannot be declared using a rest parameter."), + An_abstract_accessor_cannot_have_an_implementation: diag(1318, ts.DiagnosticCategory.Error, "An_abstract_accessor_cannot_have_an_implementation_1318", "An abstract accessor cannot have an implementation."), + A_default_export_can_only_be_used_in_an_ECMAScript_style_module: diag(1319, ts.DiagnosticCategory.Error, "A_default_export_can_only_be_used_in_an_ECMAScript_style_module_1319", "A default export can only be used in an ECMAScript-style module."), + Type_of_await_operand_must_either_be_a_valid_promise_or_must_not_contain_a_callable_then_member: diag(1320, ts.DiagnosticCategory.Error, "Type_of_await_operand_must_either_be_a_valid_promise_or_must_not_contain_a_callable_then_member_1320", "Type of 'await' operand must either be a valid promise or must not contain a callable 'then' member."), + Type_of_yield_operand_in_an_async_generator_must_either_be_a_valid_promise_or_must_not_contain_a_callable_then_member: diag(1321, ts.DiagnosticCategory.Error, "Type_of_yield_operand_in_an_async_generator_must_either_be_a_valid_promise_or_must_not_contain_a_cal_1321", "Type of 'yield' operand in an async generator must either be a valid promise or must not contain a callable 'then' member."), + Type_of_iterated_elements_of_a_yield_Asterisk_operand_must_either_be_a_valid_promise_or_must_not_contain_a_callable_then_member: diag(1322, ts.DiagnosticCategory.Error, "Type_of_iterated_elements_of_a_yield_Asterisk_operand_must_either_be_a_valid_promise_or_must_not_con_1322", "Type of iterated elements of a 'yield*' operand must either be a valid promise or must not contain a callable 'then' member."), + Dynamic_imports_are_only_supported_when_the_module_flag_is_set_to_es2020_esnext_commonjs_amd_system_or_umd: diag(1323, ts.DiagnosticCategory.Error, "Dynamic_imports_are_only_supported_when_the_module_flag_is_set_to_es2020_esnext_commonjs_amd_system__1323", "Dynamic imports are only supported when the '--module' flag is set to 'es2020', 'esnext', 'commonjs', 'amd', 'system', or 'umd'."), + Dynamic_import_must_have_one_specifier_as_an_argument: diag(1324, ts.DiagnosticCategory.Error, "Dynamic_import_must_have_one_specifier_as_an_argument_1324", "Dynamic import must have one specifier as an argument."), + Specifier_of_dynamic_import_cannot_be_spread_element: diag(1325, ts.DiagnosticCategory.Error, "Specifier_of_dynamic_import_cannot_be_spread_element_1325", "Specifier of dynamic import cannot be spread element."), + Dynamic_import_cannot_have_type_arguments: diag(1326, ts.DiagnosticCategory.Error, "Dynamic_import_cannot_have_type_arguments_1326", "Dynamic import cannot have type arguments"), + String_literal_with_double_quotes_expected: diag(1327, ts.DiagnosticCategory.Error, "String_literal_with_double_quotes_expected_1327", "String literal with double quotes expected."), + Property_value_can_only_be_string_literal_numeric_literal_true_false_null_object_literal_or_array_literal: diag(1328, ts.DiagnosticCategory.Error, "Property_value_can_only_be_string_literal_numeric_literal_true_false_null_object_literal_or_array_li_1328", "Property value can only be string literal, numeric literal, 'true', 'false', 'null', object literal or array literal."), + _0_accepts_too_few_arguments_to_be_used_as_a_decorator_here_Did_you_mean_to_call_it_first_and_write_0: diag(1329, ts.DiagnosticCategory.Error, "_0_accepts_too_few_arguments_to_be_used_as_a_decorator_here_Did_you_mean_to_call_it_first_and_write__1329", "'{0}' accepts too few arguments to be used as a decorator here. Did you mean to call it first and write '@{0}()'?"), + A_property_of_an_interface_or_type_literal_whose_type_is_a_unique_symbol_type_must_be_readonly: diag(1330, ts.DiagnosticCategory.Error, "A_property_of_an_interface_or_type_literal_whose_type_is_a_unique_symbol_type_must_be_readonly_1330", "A property of an interface or type literal whose type is a 'unique symbol' type must be 'readonly'."), + A_property_of_a_class_whose_type_is_a_unique_symbol_type_must_be_both_static_and_readonly: diag(1331, ts.DiagnosticCategory.Error, "A_property_of_a_class_whose_type_is_a_unique_symbol_type_must_be_both_static_and_readonly_1331", "A property of a class whose type is a 'unique symbol' type must be both 'static' and 'readonly'."), + A_variable_whose_type_is_a_unique_symbol_type_must_be_const: diag(1332, ts.DiagnosticCategory.Error, "A_variable_whose_type_is_a_unique_symbol_type_must_be_const_1332", "A variable whose type is a 'unique symbol' type must be 'const'."), + unique_symbol_types_may_not_be_used_on_a_variable_declaration_with_a_binding_name: diag(1333, ts.DiagnosticCategory.Error, "unique_symbol_types_may_not_be_used_on_a_variable_declaration_with_a_binding_name_1333", "'unique symbol' types may not be used on a variable declaration with a binding name."), + unique_symbol_types_are_only_allowed_on_variables_in_a_variable_statement: diag(1334, ts.DiagnosticCategory.Error, "unique_symbol_types_are_only_allowed_on_variables_in_a_variable_statement_1334", "'unique symbol' types are only allowed on variables in a variable statement."), + unique_symbol_types_are_not_allowed_here: diag(1335, ts.DiagnosticCategory.Error, "unique_symbol_types_are_not_allowed_here_1335", "'unique symbol' types are not allowed here."), + An_index_signature_parameter_type_cannot_be_a_type_alias_Consider_writing_0_Colon_1_Colon_2_instead: diag(1336, ts.DiagnosticCategory.Error, "An_index_signature_parameter_type_cannot_be_a_type_alias_Consider_writing_0_Colon_1_Colon_2_instead_1336", "An index signature parameter type cannot be a type alias. Consider writing '[{0}: {1}]: {2}' instead."), + An_index_signature_parameter_type_cannot_be_a_union_type_Consider_using_a_mapped_object_type_instead: diag(1337, ts.DiagnosticCategory.Error, "An_index_signature_parameter_type_cannot_be_a_union_type_Consider_using_a_mapped_object_type_instead_1337", "An index signature parameter type cannot be a union type. Consider using a mapped object type instead."), + infer_declarations_are_only_permitted_in_the_extends_clause_of_a_conditional_type: diag(1338, ts.DiagnosticCategory.Error, "infer_declarations_are_only_permitted_in_the_extends_clause_of_a_conditional_type_1338", "'infer' declarations are only permitted in the 'extends' clause of a conditional type."), + Module_0_does_not_refer_to_a_value_but_is_used_as_a_value_here: diag(1339, ts.DiagnosticCategory.Error, "Module_0_does_not_refer_to_a_value_but_is_used_as_a_value_here_1339", "Module '{0}' does not refer to a value, but is used as a value here."), + Module_0_does_not_refer_to_a_type_but_is_used_as_a_type_here_Did_you_mean_typeof_import_0: diag(1340, ts.DiagnosticCategory.Error, "Module_0_does_not_refer_to_a_type_but_is_used_as_a_type_here_Did_you_mean_typeof_import_0_1340", "Module '{0}' does not refer to a type, but is used as a type here. Did you mean 'typeof import('{0}')'?"), + Type_arguments_cannot_be_used_here: diag(1342, ts.DiagnosticCategory.Error, "Type_arguments_cannot_be_used_here_1342", "Type arguments cannot be used here."), + The_import_meta_meta_property_is_only_allowed_when_the_module_option_is_esnext_or_system: diag(1343, ts.DiagnosticCategory.Error, "The_import_meta_meta_property_is_only_allowed_when_the_module_option_is_esnext_or_system_1343", "The 'import.meta' meta-property is only allowed when the '--module' option is 'esnext' or 'system'."), + A_label_is_not_allowed_here: diag(1344, ts.DiagnosticCategory.Error, "A_label_is_not_allowed_here_1344", "'A label is not allowed here."), + An_expression_of_type_void_cannot_be_tested_for_truthiness: diag(1345, ts.DiagnosticCategory.Error, "An_expression_of_type_void_cannot_be_tested_for_truthiness_1345", "An expression of type 'void' cannot be tested for truthiness"), + This_parameter_is_not_allowed_with_use_strict_directive: diag(1346, ts.DiagnosticCategory.Error, "This_parameter_is_not_allowed_with_use_strict_directive_1346", "This parameter is not allowed with 'use strict' directive."), + use_strict_directive_cannot_be_used_with_non_simple_parameter_list: diag(1347, ts.DiagnosticCategory.Error, "use_strict_directive_cannot_be_used_with_non_simple_parameter_list_1347", "'use strict' directive cannot be used with non-simple parameter list."), + Non_simple_parameter_declared_here: diag(1348, ts.DiagnosticCategory.Error, "Non_simple_parameter_declared_here_1348", "Non-simple parameter declared here."), + use_strict_directive_used_here: diag(1349, ts.DiagnosticCategory.Error, "use_strict_directive_used_here_1349", "'use strict' directive used here."), + Print_the_final_configuration_instead_of_building: diag(1350, ts.DiagnosticCategory.Message, "Print_the_final_configuration_instead_of_building_1350", "Print the final configuration instead of building."), + An_identifier_or_keyword_cannot_immediately_follow_a_numeric_literal: diag(1351, ts.DiagnosticCategory.Error, "An_identifier_or_keyword_cannot_immediately_follow_a_numeric_literal_1351", "An identifier or keyword cannot immediately follow a numeric literal."), + A_bigint_literal_cannot_use_exponential_notation: diag(1352, ts.DiagnosticCategory.Error, "A_bigint_literal_cannot_use_exponential_notation_1352", "A bigint literal cannot use exponential notation."), + A_bigint_literal_must_be_an_integer: diag(1353, ts.DiagnosticCategory.Error, "A_bigint_literal_must_be_an_integer_1353", "A bigint literal must be an integer."), + readonly_type_modifier_is_only_permitted_on_array_and_tuple_literal_types: diag(1354, ts.DiagnosticCategory.Error, "readonly_type_modifier_is_only_permitted_on_array_and_tuple_literal_types_1354", "'readonly' type modifier is only permitted on array and tuple literal types."), + A_const_assertions_can_only_be_applied_to_references_to_enum_members_or_string_number_boolean_array_or_object_literals: diag(1355, ts.DiagnosticCategory.Error, "A_const_assertions_can_only_be_applied_to_references_to_enum_members_or_string_number_boolean_array__1355", "A 'const' assertions can only be applied to references to enum members, or string, number, boolean, array, or object literals."), + Did_you_mean_to_mark_this_function_as_async: diag(1356, ts.DiagnosticCategory.Error, "Did_you_mean_to_mark_this_function_as_async_1356", "Did you mean to mark this function as 'async'?"), + An_enum_member_name_must_be_followed_by_a_or: diag(1357, ts.DiagnosticCategory.Error, "An_enum_member_name_must_be_followed_by_a_or_1357", "An enum member name must be followed by a ',', '=', or '}'."), + Tagged_template_expressions_are_not_permitted_in_an_optional_chain: diag(1358, ts.DiagnosticCategory.Error, "Tagged_template_expressions_are_not_permitted_in_an_optional_chain_1358", "Tagged template expressions are not permitted in an optional chain."), + Identifier_expected_0_is_a_reserved_word_that_cannot_be_used_here: diag(1359, ts.DiagnosticCategory.Error, "Identifier_expected_0_is_a_reserved_word_that_cannot_be_used_here_1359", "Identifier expected. '{0}' is a reserved word that cannot be used here."), + Did_you_mean_to_parenthesize_this_function_type: diag(1360, ts.DiagnosticCategory.Error, "Did_you_mean_to_parenthesize_this_function_type_1360", "Did you mean to parenthesize this function type?"), + _0_cannot_be_used_as_a_value_because_it_was_imported_using_import_type: diag(1361, ts.DiagnosticCategory.Error, "_0_cannot_be_used_as_a_value_because_it_was_imported_using_import_type_1361", "'{0}' cannot be used as a value because it was imported using 'import type'."), + _0_cannot_be_used_as_a_value_because_it_was_exported_using_export_type: diag(1362, ts.DiagnosticCategory.Error, "_0_cannot_be_used_as_a_value_because_it_was_exported_using_export_type_1362", "'{0}' cannot be used as a value because it was exported using 'export type'."), + A_type_only_import_can_specify_a_default_import_or_named_bindings_but_not_both: diag(1363, ts.DiagnosticCategory.Error, "A_type_only_import_can_specify_a_default_import_or_named_bindings_but_not_both_1363", "A type-only import can specify a default import or named bindings, but not both."), + Convert_to_type_only_export: diag(1364, ts.DiagnosticCategory.Message, "Convert_to_type_only_export_1364", "Convert to type-only export"), + Convert_all_re_exported_types_to_type_only_exports: diag(1365, ts.DiagnosticCategory.Message, "Convert_all_re_exported_types_to_type_only_exports_1365", "Convert all re-exported types to type-only exports"), + Split_into_two_separate_import_declarations: diag(1366, ts.DiagnosticCategory.Message, "Split_into_two_separate_import_declarations_1366", "Split into two separate import declarations"), + Split_all_invalid_type_only_imports: diag(1367, ts.DiagnosticCategory.Message, "Split_all_invalid_type_only_imports_1367", "Split all invalid type-only imports"), + Specify_emit_Slashchecking_behavior_for_imports_that_are_only_used_for_types: diag(1368, ts.DiagnosticCategory.Message, "Specify_emit_Slashchecking_behavior_for_imports_that_are_only_used_for_types_1368", "Specify emit/checking behavior for imports that are only used for types"), + Did_you_mean_0: diag(1369, ts.DiagnosticCategory.Message, "Did_you_mean_0_1369", "Did you mean '{0}'?"), + Only_ECMAScript_imports_may_use_import_type: diag(1370, ts.DiagnosticCategory.Error, "Only_ECMAScript_imports_may_use_import_type_1370", "Only ECMAScript imports may use 'import type'."), + This_import_is_never_used_as_a_value_and_must_use_import_type_because_the_importsNotUsedAsValues_is_set_to_error: diag(1371, ts.DiagnosticCategory.Error, "This_import_is_never_used_as_a_value_and_must_use_import_type_because_the_importsNotUsedAsValues_is__1371", "This import is never used as a value and must use 'import type' because the 'importsNotUsedAsValues' is set to 'error'."), + Convert_to_type_only_import: diag(1373, ts.DiagnosticCategory.Message, "Convert_to_type_only_import_1373", "Convert to type-only import"), + Convert_all_imports_not_used_as_a_value_to_type_only_imports: diag(1374, ts.DiagnosticCategory.Message, "Convert_all_imports_not_used_as_a_value_to_type_only_imports_1374", "Convert all imports not used as a value to type-only imports"), + await_expressions_are_only_allowed_at_the_top_level_of_a_file_when_that_file_is_a_module_but_this_file_has_no_imports_or_exports_Consider_adding_an_empty_export_to_make_this_file_a_module: diag(1375, ts.DiagnosticCategory.Error, "await_expressions_are_only_allowed_at_the_top_level_of_a_file_when_that_file_is_a_module_but_this_fi_1375", "'await' expressions are only allowed at the top level of a file when that file is a module, but this file has no imports or exports. Consider adding an empty 'export {}' to make this file a module."), + _0_was_imported_here: diag(1376, ts.DiagnosticCategory.Message, "_0_was_imported_here_1376", "'{0}' was imported here."), + _0_was_exported_here: diag(1377, ts.DiagnosticCategory.Message, "_0_was_exported_here_1377", "'{0}' was exported here."), + Top_level_await_expressions_are_only_allowed_when_the_module_option_is_set_to_esnext_or_system_and_the_target_option_is_set_to_es2017_or_higher: diag(1378, ts.DiagnosticCategory.Error, "Top_level_await_expressions_are_only_allowed_when_the_module_option_is_set_to_esnext_or_system_and_t_1378", "Top-level 'await' expressions are only allowed when the 'module' option is set to 'esnext' or 'system', and the 'target' option is set to 'es2017' or higher."), + An_import_alias_cannot_reference_a_declaration_that_was_exported_using_export_type: diag(1379, ts.DiagnosticCategory.Error, "An_import_alias_cannot_reference_a_declaration_that_was_exported_using_export_type_1379", "An import alias cannot reference a declaration that was exported using 'export type'."), + An_import_alias_cannot_reference_a_declaration_that_was_imported_using_import_type: diag(1380, ts.DiagnosticCategory.Error, "An_import_alias_cannot_reference_a_declaration_that_was_imported_using_import_type_1380", "An import alias cannot reference a declaration that was imported using 'import type'."), + Unexpected_token_Did_you_mean_or_rbrace: diag(1381, ts.DiagnosticCategory.Error, "Unexpected_token_Did_you_mean_or_rbrace_1381", "Unexpected token. Did you mean `{'}'}` or `}`?"), + Unexpected_token_Did_you_mean_or_gt: diag(1382, ts.DiagnosticCategory.Error, "Unexpected_token_Did_you_mean_or_gt_1382", "Unexpected token. Did you mean `{'>'}` or `>`?"), + Only_named_exports_may_use_export_type: diag(1383, ts.DiagnosticCategory.Error, "Only_named_exports_may_use_export_type_1383", "Only named exports may use 'export type'."), + A_new_expression_with_type_arguments_must_always_be_followed_by_a_parenthesized_argument_list: diag(1384, ts.DiagnosticCategory.Error, "A_new_expression_with_type_arguments_must_always_be_followed_by_a_parenthesized_argument_list_1384", "A 'new' expression with type arguments must always be followed by a parenthesized argument list."), + The_types_of_0_are_incompatible_between_these_types: diag(2200, ts.DiagnosticCategory.Error, "The_types_of_0_are_incompatible_between_these_types_2200", "The types of '{0}' are incompatible between these types."), + The_types_returned_by_0_are_incompatible_between_these_types: diag(2201, ts.DiagnosticCategory.Error, "The_types_returned_by_0_are_incompatible_between_these_types_2201", "The types returned by '{0}' are incompatible between these types."), + Call_signature_return_types_0_and_1_are_incompatible: diag(2202, ts.DiagnosticCategory.Error, "Call_signature_return_types_0_and_1_are_incompatible_2202", "Call signature return types '{0}' and '{1}' are incompatible.", /*reportsUnnecessary*/ undefined, /*elidedInCompatabilityPyramid*/ true), + Construct_signature_return_types_0_and_1_are_incompatible: diag(2203, ts.DiagnosticCategory.Error, "Construct_signature_return_types_0_and_1_are_incompatible_2203", "Construct signature return types '{0}' and '{1}' are incompatible.", /*reportsUnnecessary*/ undefined, /*elidedInCompatabilityPyramid*/ true), + Call_signatures_with_no_arguments_have_incompatible_return_types_0_and_1: diag(2204, ts.DiagnosticCategory.Error, "Call_signatures_with_no_arguments_have_incompatible_return_types_0_and_1_2204", "Call signatures with no arguments have incompatible return types '{0}' and '{1}'.", /*reportsUnnecessary*/ undefined, /*elidedInCompatabilityPyramid*/ true), + Construct_signatures_with_no_arguments_have_incompatible_return_types_0_and_1: diag(2205, ts.DiagnosticCategory.Error, "Construct_signatures_with_no_arguments_have_incompatible_return_types_0_and_1_2205", "Construct signatures with no arguments have incompatible return types '{0}' and '{1}'.", /*reportsUnnecessary*/ undefined, /*elidedInCompatabilityPyramid*/ true), + Duplicate_identifier_0: diag(2300, ts.DiagnosticCategory.Error, "Duplicate_identifier_0_2300", "Duplicate identifier '{0}'."), + Initializer_of_instance_member_variable_0_cannot_reference_identifier_1_declared_in_the_constructor: diag(2301, ts.DiagnosticCategory.Error, "Initializer_of_instance_member_variable_0_cannot_reference_identifier_1_declared_in_the_constructor_2301", "Initializer of instance member variable '{0}' cannot reference identifier '{1}' declared in the constructor."), + Static_members_cannot_reference_class_type_parameters: diag(2302, ts.DiagnosticCategory.Error, "Static_members_cannot_reference_class_type_parameters_2302", "Static members cannot reference class type parameters."), + Circular_definition_of_import_alias_0: diag(2303, ts.DiagnosticCategory.Error, "Circular_definition_of_import_alias_0_2303", "Circular definition of import alias '{0}'."), + Cannot_find_name_0: diag(2304, ts.DiagnosticCategory.Error, "Cannot_find_name_0_2304", "Cannot find name '{0}'."), + Module_0_has_no_exported_member_1: diag(2305, ts.DiagnosticCategory.Error, "Module_0_has_no_exported_member_1_2305", "Module '{0}' has no exported member '{1}'."), + File_0_is_not_a_module: diag(2306, ts.DiagnosticCategory.Error, "File_0_is_not_a_module_2306", "File '{0}' is not a module."), + Cannot_find_module_0_or_its_corresponding_type_declarations: diag(2307, ts.DiagnosticCategory.Error, "Cannot_find_module_0_or_its_corresponding_type_declarations_2307", "Cannot find module '{0}' or its corresponding type declarations."), + Module_0_has_already_exported_a_member_named_1_Consider_explicitly_re_exporting_to_resolve_the_ambiguity: diag(2308, ts.DiagnosticCategory.Error, "Module_0_has_already_exported_a_member_named_1_Consider_explicitly_re_exporting_to_resolve_the_ambig_2308", "Module {0} has already exported a member named '{1}'. Consider explicitly re-exporting to resolve the ambiguity."), + An_export_assignment_cannot_be_used_in_a_module_with_other_exported_elements: diag(2309, ts.DiagnosticCategory.Error, "An_export_assignment_cannot_be_used_in_a_module_with_other_exported_elements_2309", "An export assignment cannot be used in a module with other exported elements."), + Type_0_recursively_references_itself_as_a_base_type: diag(2310, ts.DiagnosticCategory.Error, "Type_0_recursively_references_itself_as_a_base_type_2310", "Type '{0}' recursively references itself as a base type."), + A_class_may_only_extend_another_class: diag(2311, ts.DiagnosticCategory.Error, "A_class_may_only_extend_another_class_2311", "A class may only extend another class."), + An_interface_can_only_extend_an_object_type_or_intersection_of_object_types_with_statically_known_members: diag(2312, ts.DiagnosticCategory.Error, "An_interface_can_only_extend_an_object_type_or_intersection_of_object_types_with_statically_known_me_2312", "An interface can only extend an object type or intersection of object types with statically known members."), + Type_parameter_0_has_a_circular_constraint: diag(2313, ts.DiagnosticCategory.Error, "Type_parameter_0_has_a_circular_constraint_2313", "Type parameter '{0}' has a circular constraint."), + Generic_type_0_requires_1_type_argument_s: diag(2314, ts.DiagnosticCategory.Error, "Generic_type_0_requires_1_type_argument_s_2314", "Generic type '{0}' requires {1} type argument(s)."), + Type_0_is_not_generic: diag(2315, ts.DiagnosticCategory.Error, "Type_0_is_not_generic_2315", "Type '{0}' is not generic."), + Global_type_0_must_be_a_class_or_interface_type: diag(2316, ts.DiagnosticCategory.Error, "Global_type_0_must_be_a_class_or_interface_type_2316", "Global type '{0}' must be a class or interface type."), + Global_type_0_must_have_1_type_parameter_s: diag(2317, ts.DiagnosticCategory.Error, "Global_type_0_must_have_1_type_parameter_s_2317", "Global type '{0}' must have {1} type parameter(s)."), + Cannot_find_global_type_0: diag(2318, ts.DiagnosticCategory.Error, "Cannot_find_global_type_0_2318", "Cannot find global type '{0}'."), + Named_property_0_of_types_1_and_2_are_not_identical: diag(2319, ts.DiagnosticCategory.Error, "Named_property_0_of_types_1_and_2_are_not_identical_2319", "Named property '{0}' of types '{1}' and '{2}' are not identical."), + Interface_0_cannot_simultaneously_extend_types_1_and_2: diag(2320, ts.DiagnosticCategory.Error, "Interface_0_cannot_simultaneously_extend_types_1_and_2_2320", "Interface '{0}' cannot simultaneously extend types '{1}' and '{2}'."), + Excessive_stack_depth_comparing_types_0_and_1: diag(2321, ts.DiagnosticCategory.Error, "Excessive_stack_depth_comparing_types_0_and_1_2321", "Excessive stack depth comparing types '{0}' and '{1}'."), + Type_0_is_not_assignable_to_type_1: diag(2322, ts.DiagnosticCategory.Error, "Type_0_is_not_assignable_to_type_1_2322", "Type '{0}' is not assignable to type '{1}'."), + Cannot_redeclare_exported_variable_0: diag(2323, ts.DiagnosticCategory.Error, "Cannot_redeclare_exported_variable_0_2323", "Cannot redeclare exported variable '{0}'."), + Property_0_is_missing_in_type_1: diag(2324, ts.DiagnosticCategory.Error, "Property_0_is_missing_in_type_1_2324", "Property '{0}' is missing in type '{1}'."), + Property_0_is_private_in_type_1_but_not_in_type_2: diag(2325, ts.DiagnosticCategory.Error, "Property_0_is_private_in_type_1_but_not_in_type_2_2325", "Property '{0}' is private in type '{1}' but not in type '{2}'."), + Types_of_property_0_are_incompatible: diag(2326, ts.DiagnosticCategory.Error, "Types_of_property_0_are_incompatible_2326", "Types of property '{0}' are incompatible."), + Property_0_is_optional_in_type_1_but_required_in_type_2: diag(2327, ts.DiagnosticCategory.Error, "Property_0_is_optional_in_type_1_but_required_in_type_2_2327", "Property '{0}' is optional in type '{1}' but required in type '{2}'."), + Types_of_parameters_0_and_1_are_incompatible: diag(2328, ts.DiagnosticCategory.Error, "Types_of_parameters_0_and_1_are_incompatible_2328", "Types of parameters '{0}' and '{1}' are incompatible."), + Index_signature_is_missing_in_type_0: diag(2329, ts.DiagnosticCategory.Error, "Index_signature_is_missing_in_type_0_2329", "Index signature is missing in type '{0}'."), + Index_signatures_are_incompatible: diag(2330, ts.DiagnosticCategory.Error, "Index_signatures_are_incompatible_2330", "Index signatures are incompatible."), + this_cannot_be_referenced_in_a_module_or_namespace_body: diag(2331, ts.DiagnosticCategory.Error, "this_cannot_be_referenced_in_a_module_or_namespace_body_2331", "'this' cannot be referenced in a module or namespace body."), + this_cannot_be_referenced_in_current_location: diag(2332, ts.DiagnosticCategory.Error, "this_cannot_be_referenced_in_current_location_2332", "'this' cannot be referenced in current location."), + this_cannot_be_referenced_in_constructor_arguments: diag(2333, ts.DiagnosticCategory.Error, "this_cannot_be_referenced_in_constructor_arguments_2333", "'this' cannot be referenced in constructor arguments."), + this_cannot_be_referenced_in_a_static_property_initializer: diag(2334, ts.DiagnosticCategory.Error, "this_cannot_be_referenced_in_a_static_property_initializer_2334", "'this' cannot be referenced in a static property initializer."), + super_can_only_be_referenced_in_a_derived_class: diag(2335, ts.DiagnosticCategory.Error, "super_can_only_be_referenced_in_a_derived_class_2335", "'super' can only be referenced in a derived class."), + super_cannot_be_referenced_in_constructor_arguments: diag(2336, ts.DiagnosticCategory.Error, "super_cannot_be_referenced_in_constructor_arguments_2336", "'super' cannot be referenced in constructor arguments."), + Super_calls_are_not_permitted_outside_constructors_or_in_nested_functions_inside_constructors: diag(2337, ts.DiagnosticCategory.Error, "Super_calls_are_not_permitted_outside_constructors_or_in_nested_functions_inside_constructors_2337", "Super calls are not permitted outside constructors or in nested functions inside constructors."), + super_property_access_is_permitted_only_in_a_constructor_member_function_or_member_accessor_of_a_derived_class: diag(2338, ts.DiagnosticCategory.Error, "super_property_access_is_permitted_only_in_a_constructor_member_function_or_member_accessor_of_a_der_2338", "'super' property access is permitted only in a constructor, member function, or member accessor of a derived class."), + Property_0_does_not_exist_on_type_1: diag(2339, ts.DiagnosticCategory.Error, "Property_0_does_not_exist_on_type_1_2339", "Property '{0}' does not exist on type '{1}'."), + Only_public_and_protected_methods_of_the_base_class_are_accessible_via_the_super_keyword: diag(2340, ts.DiagnosticCategory.Error, "Only_public_and_protected_methods_of_the_base_class_are_accessible_via_the_super_keyword_2340", "Only public and protected methods of the base class are accessible via the 'super' keyword."), + Property_0_is_private_and_only_accessible_within_class_1: diag(2341, ts.DiagnosticCategory.Error, "Property_0_is_private_and_only_accessible_within_class_1_2341", "Property '{0}' is private and only accessible within class '{1}'."), + An_index_expression_argument_must_be_of_type_string_number_symbol_or_any: diag(2342, ts.DiagnosticCategory.Error, "An_index_expression_argument_must_be_of_type_string_number_symbol_or_any_2342", "An index expression argument must be of type 'string', 'number', 'symbol', or 'any'."), + This_syntax_requires_an_imported_helper_named_1_which_does_not_exist_in_0_Consider_upgrading_your_version_of_0: diag(2343, ts.DiagnosticCategory.Error, "This_syntax_requires_an_imported_helper_named_1_which_does_not_exist_in_0_Consider_upgrading_your_ve_2343", "This syntax requires an imported helper named '{1}' which does not exist in '{0}'. Consider upgrading your version of '{0}'."), + Type_0_does_not_satisfy_the_constraint_1: diag(2344, ts.DiagnosticCategory.Error, "Type_0_does_not_satisfy_the_constraint_1_2344", "Type '{0}' does not satisfy the constraint '{1}'."), + Argument_of_type_0_is_not_assignable_to_parameter_of_type_1: diag(2345, ts.DiagnosticCategory.Error, "Argument_of_type_0_is_not_assignable_to_parameter_of_type_1_2345", "Argument of type '{0}' is not assignable to parameter of type '{1}'."), + Call_target_does_not_contain_any_signatures: diag(2346, ts.DiagnosticCategory.Error, "Call_target_does_not_contain_any_signatures_2346", "Call target does not contain any signatures."), + Untyped_function_calls_may_not_accept_type_arguments: diag(2347, ts.DiagnosticCategory.Error, "Untyped_function_calls_may_not_accept_type_arguments_2347", "Untyped function calls may not accept type arguments."), + Value_of_type_0_is_not_callable_Did_you_mean_to_include_new: diag(2348, ts.DiagnosticCategory.Error, "Value_of_type_0_is_not_callable_Did_you_mean_to_include_new_2348", "Value of type '{0}' is not callable. Did you mean to include 'new'?"), + This_expression_is_not_callable: diag(2349, ts.DiagnosticCategory.Error, "This_expression_is_not_callable_2349", "This expression is not callable."), + Only_a_void_function_can_be_called_with_the_new_keyword: diag(2350, ts.DiagnosticCategory.Error, "Only_a_void_function_can_be_called_with_the_new_keyword_2350", "Only a void function can be called with the 'new' keyword."), + This_expression_is_not_constructable: diag(2351, ts.DiagnosticCategory.Error, "This_expression_is_not_constructable_2351", "This expression is not constructable."), + Conversion_of_type_0_to_type_1_may_be_a_mistake_because_neither_type_sufficiently_overlaps_with_the_other_If_this_was_intentional_convert_the_expression_to_unknown_first: diag(2352, ts.DiagnosticCategory.Error, "Conversion_of_type_0_to_type_1_may_be_a_mistake_because_neither_type_sufficiently_overlaps_with_the__2352", "Conversion of type '{0}' to type '{1}' may be a mistake because neither type sufficiently overlaps with the other. If this was intentional, convert the expression to 'unknown' first."), + Object_literal_may_only_specify_known_properties_and_0_does_not_exist_in_type_1: diag(2353, ts.DiagnosticCategory.Error, "Object_literal_may_only_specify_known_properties_and_0_does_not_exist_in_type_1_2353", "Object literal may only specify known properties, and '{0}' does not exist in type '{1}'."), + This_syntax_requires_an_imported_helper_but_module_0_cannot_be_found: diag(2354, ts.DiagnosticCategory.Error, "This_syntax_requires_an_imported_helper_but_module_0_cannot_be_found_2354", "This syntax requires an imported helper but module '{0}' cannot be found."), + A_function_whose_declared_type_is_neither_void_nor_any_must_return_a_value: diag(2355, ts.DiagnosticCategory.Error, "A_function_whose_declared_type_is_neither_void_nor_any_must_return_a_value_2355", "A function whose declared type is neither 'void' nor 'any' must return a value."), + An_arithmetic_operand_must_be_of_type_any_number_bigint_or_an_enum_type: diag(2356, ts.DiagnosticCategory.Error, "An_arithmetic_operand_must_be_of_type_any_number_bigint_or_an_enum_type_2356", "An arithmetic operand must be of type 'any', 'number', 'bigint' or an enum type."), + The_operand_of_an_increment_or_decrement_operator_must_be_a_variable_or_a_property_access: diag(2357, ts.DiagnosticCategory.Error, "The_operand_of_an_increment_or_decrement_operator_must_be_a_variable_or_a_property_access_2357", "The operand of an increment or decrement operator must be a variable or a property access."), + The_left_hand_side_of_an_instanceof_expression_must_be_of_type_any_an_object_type_or_a_type_parameter: diag(2358, ts.DiagnosticCategory.Error, "The_left_hand_side_of_an_instanceof_expression_must_be_of_type_any_an_object_type_or_a_type_paramete_2358", "The left-hand side of an 'instanceof' expression must be of type 'any', an object type or a type parameter."), + The_right_hand_side_of_an_instanceof_expression_must_be_of_type_any_or_of_a_type_assignable_to_the_Function_interface_type: diag(2359, ts.DiagnosticCategory.Error, "The_right_hand_side_of_an_instanceof_expression_must_be_of_type_any_or_of_a_type_assignable_to_the_F_2359", "The right-hand side of an 'instanceof' expression must be of type 'any' or of a type assignable to the 'Function' interface type."), + The_left_hand_side_of_an_in_expression_must_be_of_type_any_string_number_or_symbol: diag(2360, ts.DiagnosticCategory.Error, "The_left_hand_side_of_an_in_expression_must_be_of_type_any_string_number_or_symbol_2360", "The left-hand side of an 'in' expression must be of type 'any', 'string', 'number', or 'symbol'."), + The_right_hand_side_of_an_in_expression_must_be_of_type_any_an_object_type_or_a_type_parameter: diag(2361, ts.DiagnosticCategory.Error, "The_right_hand_side_of_an_in_expression_must_be_of_type_any_an_object_type_or_a_type_parameter_2361", "The right-hand side of an 'in' expression must be of type 'any', an object type or a type parameter."), + The_left_hand_side_of_an_arithmetic_operation_must_be_of_type_any_number_bigint_or_an_enum_type: diag(2362, ts.DiagnosticCategory.Error, "The_left_hand_side_of_an_arithmetic_operation_must_be_of_type_any_number_bigint_or_an_enum_type_2362", "The left-hand side of an arithmetic operation must be of type 'any', 'number', 'bigint' or an enum type."), + The_right_hand_side_of_an_arithmetic_operation_must_be_of_type_any_number_bigint_or_an_enum_type: diag(2363, ts.DiagnosticCategory.Error, "The_right_hand_side_of_an_arithmetic_operation_must_be_of_type_any_number_bigint_or_an_enum_type_2363", "The right-hand side of an arithmetic operation must be of type 'any', 'number', 'bigint' or an enum type."), + The_left_hand_side_of_an_assignment_expression_must_be_a_variable_or_a_property_access: diag(2364, ts.DiagnosticCategory.Error, "The_left_hand_side_of_an_assignment_expression_must_be_a_variable_or_a_property_access_2364", "The left-hand side of an assignment expression must be a variable or a property access."), + Operator_0_cannot_be_applied_to_types_1_and_2: diag(2365, ts.DiagnosticCategory.Error, "Operator_0_cannot_be_applied_to_types_1_and_2_2365", "Operator '{0}' cannot be applied to types '{1}' and '{2}'."), + Function_lacks_ending_return_statement_and_return_type_does_not_include_undefined: diag(2366, ts.DiagnosticCategory.Error, "Function_lacks_ending_return_statement_and_return_type_does_not_include_undefined_2366", "Function lacks ending return statement and return type does not include 'undefined'."), + This_condition_will_always_return_0_since_the_types_1_and_2_have_no_overlap: diag(2367, ts.DiagnosticCategory.Error, "This_condition_will_always_return_0_since_the_types_1_and_2_have_no_overlap_2367", "This condition will always return '{0}' since the types '{1}' and '{2}' have no overlap."), + Type_parameter_name_cannot_be_0: diag(2368, ts.DiagnosticCategory.Error, "Type_parameter_name_cannot_be_0_2368", "Type parameter name cannot be '{0}'."), + A_parameter_property_is_only_allowed_in_a_constructor_implementation: diag(2369, ts.DiagnosticCategory.Error, "A_parameter_property_is_only_allowed_in_a_constructor_implementation_2369", "A parameter property is only allowed in a constructor implementation."), + A_rest_parameter_must_be_of_an_array_type: diag(2370, ts.DiagnosticCategory.Error, "A_rest_parameter_must_be_of_an_array_type_2370", "A rest parameter must be of an array type."), + A_parameter_initializer_is_only_allowed_in_a_function_or_constructor_implementation: diag(2371, ts.DiagnosticCategory.Error, "A_parameter_initializer_is_only_allowed_in_a_function_or_constructor_implementation_2371", "A parameter initializer is only allowed in a function or constructor implementation."), + Parameter_0_cannot_reference_itself: diag(2372, ts.DiagnosticCategory.Error, "Parameter_0_cannot_reference_itself_2372", "Parameter '{0}' cannot reference itself."), + Parameter_0_cannot_reference_identifier_1_declared_after_it: diag(2373, ts.DiagnosticCategory.Error, "Parameter_0_cannot_reference_identifier_1_declared_after_it_2373", "Parameter '{0}' cannot reference identifier '{1}' declared after it."), + Duplicate_string_index_signature: diag(2374, ts.DiagnosticCategory.Error, "Duplicate_string_index_signature_2374", "Duplicate string index signature."), + Duplicate_number_index_signature: diag(2375, ts.DiagnosticCategory.Error, "Duplicate_number_index_signature_2375", "Duplicate number index signature."), + A_super_call_must_be_the_first_statement_in_the_constructor_when_a_class_contains_initialized_properties_parameter_properties_or_private_identifiers: diag(2376, ts.DiagnosticCategory.Error, "A_super_call_must_be_the_first_statement_in_the_constructor_when_a_class_contains_initialized_proper_2376", "A 'super' call must be the first statement in the constructor when a class contains initialized properties, parameter properties, or private identifiers."), + Constructors_for_derived_classes_must_contain_a_super_call: diag(2377, ts.DiagnosticCategory.Error, "Constructors_for_derived_classes_must_contain_a_super_call_2377", "Constructors for derived classes must contain a 'super' call."), + A_get_accessor_must_return_a_value: diag(2378, ts.DiagnosticCategory.Error, "A_get_accessor_must_return_a_value_2378", "A 'get' accessor must return a value."), + Getter_and_setter_accessors_do_not_agree_in_visibility: diag(2379, ts.DiagnosticCategory.Error, "Getter_and_setter_accessors_do_not_agree_in_visibility_2379", "Getter and setter accessors do not agree in visibility."), + get_and_set_accessor_must_have_the_same_type: diag(2380, ts.DiagnosticCategory.Error, "get_and_set_accessor_must_have_the_same_type_2380", "'get' and 'set' accessor must have the same type."), + A_signature_with_an_implementation_cannot_use_a_string_literal_type: diag(2381, ts.DiagnosticCategory.Error, "A_signature_with_an_implementation_cannot_use_a_string_literal_type_2381", "A signature with an implementation cannot use a string literal type."), + Specialized_overload_signature_is_not_assignable_to_any_non_specialized_signature: diag(2382, ts.DiagnosticCategory.Error, "Specialized_overload_signature_is_not_assignable_to_any_non_specialized_signature_2382", "Specialized overload signature is not assignable to any non-specialized signature."), + Overload_signatures_must_all_be_exported_or_non_exported: diag(2383, ts.DiagnosticCategory.Error, "Overload_signatures_must_all_be_exported_or_non_exported_2383", "Overload signatures must all be exported or non-exported."), + Overload_signatures_must_all_be_ambient_or_non_ambient: diag(2384, ts.DiagnosticCategory.Error, "Overload_signatures_must_all_be_ambient_or_non_ambient_2384", "Overload signatures must all be ambient or non-ambient."), + Overload_signatures_must_all_be_public_private_or_protected: diag(2385, ts.DiagnosticCategory.Error, "Overload_signatures_must_all_be_public_private_or_protected_2385", "Overload signatures must all be public, private or protected."), + Overload_signatures_must_all_be_optional_or_required: diag(2386, ts.DiagnosticCategory.Error, "Overload_signatures_must_all_be_optional_or_required_2386", "Overload signatures must all be optional or required."), + Function_overload_must_be_static: diag(2387, ts.DiagnosticCategory.Error, "Function_overload_must_be_static_2387", "Function overload must be static."), + Function_overload_must_not_be_static: diag(2388, ts.DiagnosticCategory.Error, "Function_overload_must_not_be_static_2388", "Function overload must not be static."), + Function_implementation_name_must_be_0: diag(2389, ts.DiagnosticCategory.Error, "Function_implementation_name_must_be_0_2389", "Function implementation name must be '{0}'."), + Constructor_implementation_is_missing: diag(2390, ts.DiagnosticCategory.Error, "Constructor_implementation_is_missing_2390", "Constructor implementation is missing."), + Function_implementation_is_missing_or_not_immediately_following_the_declaration: diag(2391, ts.DiagnosticCategory.Error, "Function_implementation_is_missing_or_not_immediately_following_the_declaration_2391", "Function implementation is missing or not immediately following the declaration."), + Multiple_constructor_implementations_are_not_allowed: diag(2392, ts.DiagnosticCategory.Error, "Multiple_constructor_implementations_are_not_allowed_2392", "Multiple constructor implementations are not allowed."), + Duplicate_function_implementation: diag(2393, ts.DiagnosticCategory.Error, "Duplicate_function_implementation_2393", "Duplicate function implementation."), + This_overload_signature_is_not_compatible_with_its_implementation_signature: diag(2394, ts.DiagnosticCategory.Error, "This_overload_signature_is_not_compatible_with_its_implementation_signature_2394", "This overload signature is not compatible with its implementation signature."), + Individual_declarations_in_merged_declaration_0_must_be_all_exported_or_all_local: diag(2395, ts.DiagnosticCategory.Error, "Individual_declarations_in_merged_declaration_0_must_be_all_exported_or_all_local_2395", "Individual declarations in merged declaration '{0}' must be all exported or all local."), + Duplicate_identifier_arguments_Compiler_uses_arguments_to_initialize_rest_parameters: diag(2396, ts.DiagnosticCategory.Error, "Duplicate_identifier_arguments_Compiler_uses_arguments_to_initialize_rest_parameters_2396", "Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters."), + Declaration_name_conflicts_with_built_in_global_identifier_0: diag(2397, ts.DiagnosticCategory.Error, "Declaration_name_conflicts_with_built_in_global_identifier_0_2397", "Declaration name conflicts with built-in global identifier '{0}'."), + constructor_cannot_be_used_as_a_parameter_property_name: diag(2398, ts.DiagnosticCategory.Error, "constructor_cannot_be_used_as_a_parameter_property_name_2398", "'constructor' cannot be used as a parameter property name."), + Duplicate_identifier_this_Compiler_uses_variable_declaration_this_to_capture_this_reference: diag(2399, ts.DiagnosticCategory.Error, "Duplicate_identifier_this_Compiler_uses_variable_declaration_this_to_capture_this_reference_2399", "Duplicate identifier '_this'. Compiler uses variable declaration '_this' to capture 'this' reference."), + Expression_resolves_to_variable_declaration_this_that_compiler_uses_to_capture_this_reference: diag(2400, ts.DiagnosticCategory.Error, "Expression_resolves_to_variable_declaration_this_that_compiler_uses_to_capture_this_reference_2400", "Expression resolves to variable declaration '_this' that compiler uses to capture 'this' reference."), + Duplicate_identifier_super_Compiler_uses_super_to_capture_base_class_reference: diag(2401, ts.DiagnosticCategory.Error, "Duplicate_identifier_super_Compiler_uses_super_to_capture_base_class_reference_2401", "Duplicate identifier '_super'. Compiler uses '_super' to capture base class reference."), + Expression_resolves_to_super_that_compiler_uses_to_capture_base_class_reference: diag(2402, ts.DiagnosticCategory.Error, "Expression_resolves_to_super_that_compiler_uses_to_capture_base_class_reference_2402", "Expression resolves to '_super' that compiler uses to capture base class reference."), + Subsequent_variable_declarations_must_have_the_same_type_Variable_0_must_be_of_type_1_but_here_has_type_2: diag(2403, ts.DiagnosticCategory.Error, "Subsequent_variable_declarations_must_have_the_same_type_Variable_0_must_be_of_type_1_but_here_has_t_2403", "Subsequent variable declarations must have the same type. Variable '{0}' must be of type '{1}', but here has type '{2}'."), + The_left_hand_side_of_a_for_in_statement_cannot_use_a_type_annotation: diag(2404, ts.DiagnosticCategory.Error, "The_left_hand_side_of_a_for_in_statement_cannot_use_a_type_annotation_2404", "The left-hand side of a 'for...in' statement cannot use a type annotation."), + The_left_hand_side_of_a_for_in_statement_must_be_of_type_string_or_any: diag(2405, ts.DiagnosticCategory.Error, "The_left_hand_side_of_a_for_in_statement_must_be_of_type_string_or_any_2405", "The left-hand side of a 'for...in' statement must be of type 'string' or 'any'."), + The_left_hand_side_of_a_for_in_statement_must_be_a_variable_or_a_property_access: diag(2406, ts.DiagnosticCategory.Error, "The_left_hand_side_of_a_for_in_statement_must_be_a_variable_or_a_property_access_2406", "The left-hand side of a 'for...in' statement must be a variable or a property access."), + The_right_hand_side_of_a_for_in_statement_must_be_of_type_any_an_object_type_or_a_type_parameter_but_here_has_type_0: diag(2407, ts.DiagnosticCategory.Error, "The_right_hand_side_of_a_for_in_statement_must_be_of_type_any_an_object_type_or_a_type_parameter_but_2407", "The right-hand side of a 'for...in' statement must be of type 'any', an object type or a type parameter, but here has type '{0}'."), + Setters_cannot_return_a_value: diag(2408, ts.DiagnosticCategory.Error, "Setters_cannot_return_a_value_2408", "Setters cannot return a value."), + Return_type_of_constructor_signature_must_be_assignable_to_the_instance_type_of_the_class: diag(2409, ts.DiagnosticCategory.Error, "Return_type_of_constructor_signature_must_be_assignable_to_the_instance_type_of_the_class_2409", "Return type of constructor signature must be assignable to the instance type of the class."), + The_with_statement_is_not_supported_All_symbols_in_a_with_block_will_have_type_any: diag(2410, ts.DiagnosticCategory.Error, "The_with_statement_is_not_supported_All_symbols_in_a_with_block_will_have_type_any_2410", "The 'with' statement is not supported. All symbols in a 'with' block will have type 'any'."), + Property_0_of_type_1_is_not_assignable_to_string_index_type_2: diag(2411, ts.DiagnosticCategory.Error, "Property_0_of_type_1_is_not_assignable_to_string_index_type_2_2411", "Property '{0}' of type '{1}' is not assignable to string index type '{2}'."), + Property_0_of_type_1_is_not_assignable_to_numeric_index_type_2: diag(2412, ts.DiagnosticCategory.Error, "Property_0_of_type_1_is_not_assignable_to_numeric_index_type_2_2412", "Property '{0}' of type '{1}' is not assignable to numeric index type '{2}'."), + Numeric_index_type_0_is_not_assignable_to_string_index_type_1: diag(2413, ts.DiagnosticCategory.Error, "Numeric_index_type_0_is_not_assignable_to_string_index_type_1_2413", "Numeric index type '{0}' is not assignable to string index type '{1}'."), + Class_name_cannot_be_0: diag(2414, ts.DiagnosticCategory.Error, "Class_name_cannot_be_0_2414", "Class name cannot be '{0}'."), + Class_0_incorrectly_extends_base_class_1: diag(2415, ts.DiagnosticCategory.Error, "Class_0_incorrectly_extends_base_class_1_2415", "Class '{0}' incorrectly extends base class '{1}'."), + Property_0_in_type_1_is_not_assignable_to_the_same_property_in_base_type_2: diag(2416, ts.DiagnosticCategory.Error, "Property_0_in_type_1_is_not_assignable_to_the_same_property_in_base_type_2_2416", "Property '{0}' in type '{1}' is not assignable to the same property in base type '{2}'."), + Class_static_side_0_incorrectly_extends_base_class_static_side_1: diag(2417, ts.DiagnosticCategory.Error, "Class_static_side_0_incorrectly_extends_base_class_static_side_1_2417", "Class static side '{0}' incorrectly extends base class static side '{1}'."), + Type_of_computed_property_s_value_is_0_which_is_not_assignable_to_type_1: diag(2418, ts.DiagnosticCategory.Error, "Type_of_computed_property_s_value_is_0_which_is_not_assignable_to_type_1_2418", "Type of computed property's value is '{0}', which is not assignable to type '{1}'."), + Class_0_incorrectly_implements_interface_1: diag(2420, ts.DiagnosticCategory.Error, "Class_0_incorrectly_implements_interface_1_2420", "Class '{0}' incorrectly implements interface '{1}'."), + A_class_can_only_implement_an_object_type_or_intersection_of_object_types_with_statically_known_members: diag(2422, ts.DiagnosticCategory.Error, "A_class_can_only_implement_an_object_type_or_intersection_of_object_types_with_statically_known_memb_2422", "A class can only implement an object type or intersection of object types with statically known members."), + Class_0_defines_instance_member_function_1_but_extended_class_2_defines_it_as_instance_member_accessor: diag(2423, ts.DiagnosticCategory.Error, "Class_0_defines_instance_member_function_1_but_extended_class_2_defines_it_as_instance_member_access_2423", "Class '{0}' defines instance member function '{1}', but extended class '{2}' defines it as instance member accessor."), + Class_0_defines_instance_member_property_1_but_extended_class_2_defines_it_as_instance_member_function: diag(2425, ts.DiagnosticCategory.Error, "Class_0_defines_instance_member_property_1_but_extended_class_2_defines_it_as_instance_member_functi_2425", "Class '{0}' defines instance member property '{1}', but extended class '{2}' defines it as instance member function."), + Class_0_defines_instance_member_accessor_1_but_extended_class_2_defines_it_as_instance_member_function: diag(2426, ts.DiagnosticCategory.Error, "Class_0_defines_instance_member_accessor_1_but_extended_class_2_defines_it_as_instance_member_functi_2426", "Class '{0}' defines instance member accessor '{1}', but extended class '{2}' defines it as instance member function."), + Interface_name_cannot_be_0: diag(2427, ts.DiagnosticCategory.Error, "Interface_name_cannot_be_0_2427", "Interface name cannot be '{0}'."), + All_declarations_of_0_must_have_identical_type_parameters: diag(2428, ts.DiagnosticCategory.Error, "All_declarations_of_0_must_have_identical_type_parameters_2428", "All declarations of '{0}' must have identical type parameters."), + Interface_0_incorrectly_extends_interface_1: diag(2430, ts.DiagnosticCategory.Error, "Interface_0_incorrectly_extends_interface_1_2430", "Interface '{0}' incorrectly extends interface '{1}'."), + Enum_name_cannot_be_0: diag(2431, ts.DiagnosticCategory.Error, "Enum_name_cannot_be_0_2431", "Enum name cannot be '{0}'."), + In_an_enum_with_multiple_declarations_only_one_declaration_can_omit_an_initializer_for_its_first_enum_element: diag(2432, ts.DiagnosticCategory.Error, "In_an_enum_with_multiple_declarations_only_one_declaration_can_omit_an_initializer_for_its_first_enu_2432", "In an enum with multiple declarations, only one declaration can omit an initializer for its first enum element."), + A_namespace_declaration_cannot_be_in_a_different_file_from_a_class_or_function_with_which_it_is_merged: diag(2433, ts.DiagnosticCategory.Error, "A_namespace_declaration_cannot_be_in_a_different_file_from_a_class_or_function_with_which_it_is_merg_2433", "A namespace declaration cannot be in a different file from a class or function with which it is merged."), + A_namespace_declaration_cannot_be_located_prior_to_a_class_or_function_with_which_it_is_merged: diag(2434, ts.DiagnosticCategory.Error, "A_namespace_declaration_cannot_be_located_prior_to_a_class_or_function_with_which_it_is_merged_2434", "A namespace declaration cannot be located prior to a class or function with which it is merged."), + Ambient_modules_cannot_be_nested_in_other_modules_or_namespaces: diag(2435, ts.DiagnosticCategory.Error, "Ambient_modules_cannot_be_nested_in_other_modules_or_namespaces_2435", "Ambient modules cannot be nested in other modules or namespaces."), + Ambient_module_declaration_cannot_specify_relative_module_name: diag(2436, ts.DiagnosticCategory.Error, "Ambient_module_declaration_cannot_specify_relative_module_name_2436", "Ambient module declaration cannot specify relative module name."), + Module_0_is_hidden_by_a_local_declaration_with_the_same_name: diag(2437, ts.DiagnosticCategory.Error, "Module_0_is_hidden_by_a_local_declaration_with_the_same_name_2437", "Module '{0}' is hidden by a local declaration with the same name."), + Import_name_cannot_be_0: diag(2438, ts.DiagnosticCategory.Error, "Import_name_cannot_be_0_2438", "Import name cannot be '{0}'."), + Import_or_export_declaration_in_an_ambient_module_declaration_cannot_reference_module_through_relative_module_name: diag(2439, ts.DiagnosticCategory.Error, "Import_or_export_declaration_in_an_ambient_module_declaration_cannot_reference_module_through_relati_2439", "Import or export declaration in an ambient module declaration cannot reference module through relative module name."), + Import_declaration_conflicts_with_local_declaration_of_0: diag(2440, ts.DiagnosticCategory.Error, "Import_declaration_conflicts_with_local_declaration_of_0_2440", "Import declaration conflicts with local declaration of '{0}'."), + Duplicate_identifier_0_Compiler_reserves_name_1_in_top_level_scope_of_a_module: diag(2441, ts.DiagnosticCategory.Error, "Duplicate_identifier_0_Compiler_reserves_name_1_in_top_level_scope_of_a_module_2441", "Duplicate identifier '{0}'. Compiler reserves name '{1}' in top level scope of a module."), + Types_have_separate_declarations_of_a_private_property_0: diag(2442, ts.DiagnosticCategory.Error, "Types_have_separate_declarations_of_a_private_property_0_2442", "Types have separate declarations of a private property '{0}'."), + Property_0_is_protected_but_type_1_is_not_a_class_derived_from_2: diag(2443, ts.DiagnosticCategory.Error, "Property_0_is_protected_but_type_1_is_not_a_class_derived_from_2_2443", "Property '{0}' is protected but type '{1}' is not a class derived from '{2}'."), + Property_0_is_protected_in_type_1_but_public_in_type_2: diag(2444, ts.DiagnosticCategory.Error, "Property_0_is_protected_in_type_1_but_public_in_type_2_2444", "Property '{0}' is protected in type '{1}' but public in type '{2}'."), + Property_0_is_protected_and_only_accessible_within_class_1_and_its_subclasses: diag(2445, ts.DiagnosticCategory.Error, "Property_0_is_protected_and_only_accessible_within_class_1_and_its_subclasses_2445", "Property '{0}' is protected and only accessible within class '{1}' and its subclasses."), + Property_0_is_protected_and_only_accessible_through_an_instance_of_class_1: diag(2446, ts.DiagnosticCategory.Error, "Property_0_is_protected_and_only_accessible_through_an_instance_of_class_1_2446", "Property '{0}' is protected and only accessible through an instance of class '{1}'."), + The_0_operator_is_not_allowed_for_boolean_types_Consider_using_1_instead: diag(2447, ts.DiagnosticCategory.Error, "The_0_operator_is_not_allowed_for_boolean_types_Consider_using_1_instead_2447", "The '{0}' operator is not allowed for boolean types. Consider using '{1}' instead."), + Block_scoped_variable_0_used_before_its_declaration: diag(2448, ts.DiagnosticCategory.Error, "Block_scoped_variable_0_used_before_its_declaration_2448", "Block-scoped variable '{0}' used before its declaration."), + Class_0_used_before_its_declaration: diag(2449, ts.DiagnosticCategory.Error, "Class_0_used_before_its_declaration_2449", "Class '{0}' used before its declaration."), + Enum_0_used_before_its_declaration: diag(2450, ts.DiagnosticCategory.Error, "Enum_0_used_before_its_declaration_2450", "Enum '{0}' used before its declaration."), + Cannot_redeclare_block_scoped_variable_0: diag(2451, ts.DiagnosticCategory.Error, "Cannot_redeclare_block_scoped_variable_0_2451", "Cannot redeclare block-scoped variable '{0}'."), + An_enum_member_cannot_have_a_numeric_name: diag(2452, ts.DiagnosticCategory.Error, "An_enum_member_cannot_have_a_numeric_name_2452", "An enum member cannot have a numeric name."), + The_type_argument_for_type_parameter_0_cannot_be_inferred_from_the_usage_Consider_specifying_the_type_arguments_explicitly: diag(2453, ts.DiagnosticCategory.Error, "The_type_argument_for_type_parameter_0_cannot_be_inferred_from_the_usage_Consider_specifying_the_typ_2453", "The type argument for type parameter '{0}' cannot be inferred from the usage. Consider specifying the type arguments explicitly."), + Variable_0_is_used_before_being_assigned: diag(2454, ts.DiagnosticCategory.Error, "Variable_0_is_used_before_being_assigned_2454", "Variable '{0}' is used before being assigned."), + Type_argument_candidate_1_is_not_a_valid_type_argument_because_it_is_not_a_supertype_of_candidate_0: diag(2455, ts.DiagnosticCategory.Error, "Type_argument_candidate_1_is_not_a_valid_type_argument_because_it_is_not_a_supertype_of_candidate_0_2455", "Type argument candidate '{1}' is not a valid type argument because it is not a supertype of candidate '{0}'."), + Type_alias_0_circularly_references_itself: diag(2456, ts.DiagnosticCategory.Error, "Type_alias_0_circularly_references_itself_2456", "Type alias '{0}' circularly references itself."), + Type_alias_name_cannot_be_0: diag(2457, ts.DiagnosticCategory.Error, "Type_alias_name_cannot_be_0_2457", "Type alias name cannot be '{0}'."), + An_AMD_module_cannot_have_multiple_name_assignments: diag(2458, ts.DiagnosticCategory.Error, "An_AMD_module_cannot_have_multiple_name_assignments_2458", "An AMD module cannot have multiple name assignments."), + Module_0_declares_1_locally_but_it_is_not_exported: diag(2459, ts.DiagnosticCategory.Error, "Module_0_declares_1_locally_but_it_is_not_exported_2459", "Module '{0}' declares '{1}' locally, but it is not exported."), + Module_0_declares_1_locally_but_it_is_exported_as_2: diag(2460, ts.DiagnosticCategory.Error, "Module_0_declares_1_locally_but_it_is_exported_as_2_2460", "Module '{0}' declares '{1}' locally, but it is exported as '{2}'."), + Type_0_is_not_an_array_type: diag(2461, ts.DiagnosticCategory.Error, "Type_0_is_not_an_array_type_2461", "Type '{0}' is not an array type."), + A_rest_element_must_be_last_in_a_destructuring_pattern: diag(2462, ts.DiagnosticCategory.Error, "A_rest_element_must_be_last_in_a_destructuring_pattern_2462", "A rest element must be last in a destructuring pattern."), + A_binding_pattern_parameter_cannot_be_optional_in_an_implementation_signature: diag(2463, ts.DiagnosticCategory.Error, "A_binding_pattern_parameter_cannot_be_optional_in_an_implementation_signature_2463", "A binding pattern parameter cannot be optional in an implementation signature."), + A_computed_property_name_must_be_of_type_string_number_symbol_or_any: diag(2464, ts.DiagnosticCategory.Error, "A_computed_property_name_must_be_of_type_string_number_symbol_or_any_2464", "A computed property name must be of type 'string', 'number', 'symbol', or 'any'."), + this_cannot_be_referenced_in_a_computed_property_name: diag(2465, ts.DiagnosticCategory.Error, "this_cannot_be_referenced_in_a_computed_property_name_2465", "'this' cannot be referenced in a computed property name."), + super_cannot_be_referenced_in_a_computed_property_name: diag(2466, ts.DiagnosticCategory.Error, "super_cannot_be_referenced_in_a_computed_property_name_2466", "'super' cannot be referenced in a computed property name."), + A_computed_property_name_cannot_reference_a_type_parameter_from_its_containing_type: diag(2467, ts.DiagnosticCategory.Error, "A_computed_property_name_cannot_reference_a_type_parameter_from_its_containing_type_2467", "A computed property name cannot reference a type parameter from its containing type."), + Cannot_find_global_value_0: diag(2468, ts.DiagnosticCategory.Error, "Cannot_find_global_value_0_2468", "Cannot find global value '{0}'."), + The_0_operator_cannot_be_applied_to_type_symbol: diag(2469, ts.DiagnosticCategory.Error, "The_0_operator_cannot_be_applied_to_type_symbol_2469", "The '{0}' operator cannot be applied to type 'symbol'."), + Symbol_reference_does_not_refer_to_the_global_Symbol_constructor_object: diag(2470, ts.DiagnosticCategory.Error, "Symbol_reference_does_not_refer_to_the_global_Symbol_constructor_object_2470", "'Symbol' reference does not refer to the global Symbol constructor object."), + A_computed_property_name_of_the_form_0_must_be_of_type_symbol: diag(2471, ts.DiagnosticCategory.Error, "A_computed_property_name_of_the_form_0_must_be_of_type_symbol_2471", "A computed property name of the form '{0}' must be of type 'symbol'."), + Spread_operator_in_new_expressions_is_only_available_when_targeting_ECMAScript_5_and_higher: diag(2472, ts.DiagnosticCategory.Error, "Spread_operator_in_new_expressions_is_only_available_when_targeting_ECMAScript_5_and_higher_2472", "Spread operator in 'new' expressions is only available when targeting ECMAScript 5 and higher."), + Enum_declarations_must_all_be_const_or_non_const: diag(2473, ts.DiagnosticCategory.Error, "Enum_declarations_must_all_be_const_or_non_const_2473", "Enum declarations must all be const or non-const."), + const_enum_member_initializers_can_only_contain_literal_values_and_other_computed_enum_values: diag(2474, ts.DiagnosticCategory.Error, "const_enum_member_initializers_can_only_contain_literal_values_and_other_computed_enum_values_2474", "const enum member initializers can only contain literal values and other computed enum values."), + const_enums_can_only_be_used_in_property_or_index_access_expressions_or_the_right_hand_side_of_an_import_declaration_or_export_assignment_or_type_query: diag(2475, ts.DiagnosticCategory.Error, "const_enums_can_only_be_used_in_property_or_index_access_expressions_or_the_right_hand_side_of_an_im_2475", "'const' enums can only be used in property or index access expressions or the right hand side of an import declaration or export assignment or type query."), + A_const_enum_member_can_only_be_accessed_using_a_string_literal: diag(2476, ts.DiagnosticCategory.Error, "A_const_enum_member_can_only_be_accessed_using_a_string_literal_2476", "A const enum member can only be accessed using a string literal."), + const_enum_member_initializer_was_evaluated_to_a_non_finite_value: diag(2477, ts.DiagnosticCategory.Error, "const_enum_member_initializer_was_evaluated_to_a_non_finite_value_2477", "'const' enum member initializer was evaluated to a non-finite value."), + const_enum_member_initializer_was_evaluated_to_disallowed_value_NaN: diag(2478, ts.DiagnosticCategory.Error, "const_enum_member_initializer_was_evaluated_to_disallowed_value_NaN_2478", "'const' enum member initializer was evaluated to disallowed value 'NaN'."), + Property_0_does_not_exist_on_const_enum_1: diag(2479, ts.DiagnosticCategory.Error, "Property_0_does_not_exist_on_const_enum_1_2479", "Property '{0}' does not exist on 'const' enum '{1}'."), + let_is_not_allowed_to_be_used_as_a_name_in_let_or_const_declarations: diag(2480, ts.DiagnosticCategory.Error, "let_is_not_allowed_to_be_used_as_a_name_in_let_or_const_declarations_2480", "'let' is not allowed to be used as a name in 'let' or 'const' declarations."), + Cannot_initialize_outer_scoped_variable_0_in_the_same_scope_as_block_scoped_declaration_1: diag(2481, ts.DiagnosticCategory.Error, "Cannot_initialize_outer_scoped_variable_0_in_the_same_scope_as_block_scoped_declaration_1_2481", "Cannot initialize outer scoped variable '{0}' in the same scope as block scoped declaration '{1}'."), + The_left_hand_side_of_a_for_of_statement_cannot_use_a_type_annotation: diag(2483, ts.DiagnosticCategory.Error, "The_left_hand_side_of_a_for_of_statement_cannot_use_a_type_annotation_2483", "The left-hand side of a 'for...of' statement cannot use a type annotation."), + Export_declaration_conflicts_with_exported_declaration_of_0: diag(2484, ts.DiagnosticCategory.Error, "Export_declaration_conflicts_with_exported_declaration_of_0_2484", "Export declaration conflicts with exported declaration of '{0}'."), + The_left_hand_side_of_a_for_of_statement_must_be_a_variable_or_a_property_access: diag(2487, ts.DiagnosticCategory.Error, "The_left_hand_side_of_a_for_of_statement_must_be_a_variable_or_a_property_access_2487", "The left-hand side of a 'for...of' statement must be a variable or a property access."), + Type_0_must_have_a_Symbol_iterator_method_that_returns_an_iterator: diag(2488, ts.DiagnosticCategory.Error, "Type_0_must_have_a_Symbol_iterator_method_that_returns_an_iterator_2488", "Type '{0}' must have a '[Symbol.iterator]()' method that returns an iterator."), + An_iterator_must_have_a_next_method: diag(2489, ts.DiagnosticCategory.Error, "An_iterator_must_have_a_next_method_2489", "An iterator must have a 'next()' method."), + The_type_returned_by_the_0_method_of_an_iterator_must_have_a_value_property: diag(2490, ts.DiagnosticCategory.Error, "The_type_returned_by_the_0_method_of_an_iterator_must_have_a_value_property_2490", "The type returned by the '{0}()' method of an iterator must have a 'value' property."), + The_left_hand_side_of_a_for_in_statement_cannot_be_a_destructuring_pattern: diag(2491, ts.DiagnosticCategory.Error, "The_left_hand_side_of_a_for_in_statement_cannot_be_a_destructuring_pattern_2491", "The left-hand side of a 'for...in' statement cannot be a destructuring pattern."), + Cannot_redeclare_identifier_0_in_catch_clause: diag(2492, ts.DiagnosticCategory.Error, "Cannot_redeclare_identifier_0_in_catch_clause_2492", "Cannot redeclare identifier '{0}' in catch clause."), + Tuple_type_0_of_length_1_has_no_element_at_index_2: diag(2493, ts.DiagnosticCategory.Error, "Tuple_type_0_of_length_1_has_no_element_at_index_2_2493", "Tuple type '{0}' of length '{1}' has no element at index '{2}'."), + Using_a_string_in_a_for_of_statement_is_only_supported_in_ECMAScript_5_and_higher: diag(2494, ts.DiagnosticCategory.Error, "Using_a_string_in_a_for_of_statement_is_only_supported_in_ECMAScript_5_and_higher_2494", "Using a string in a 'for...of' statement is only supported in ECMAScript 5 and higher."), + Type_0_is_not_an_array_type_or_a_string_type: diag(2495, ts.DiagnosticCategory.Error, "Type_0_is_not_an_array_type_or_a_string_type_2495", "Type '{0}' is not an array type or a string type."), + The_arguments_object_cannot_be_referenced_in_an_arrow_function_in_ES3_and_ES5_Consider_using_a_standard_function_expression: diag(2496, ts.DiagnosticCategory.Error, "The_arguments_object_cannot_be_referenced_in_an_arrow_function_in_ES3_and_ES5_Consider_using_a_stand_2496", "The 'arguments' object cannot be referenced in an arrow function in ES3 and ES5. Consider using a standard function expression."), + This_module_can_only_be_referenced_with_ECMAScript_imports_Slashexports_by_turning_on_the_0_flag_and_referencing_its_default_export: diag(2497, ts.DiagnosticCategory.Error, "This_module_can_only_be_referenced_with_ECMAScript_imports_Slashexports_by_turning_on_the_0_flag_and_2497", "This module can only be referenced with ECMAScript imports/exports by turning on the '{0}' flag and referencing its default export."), + Module_0_uses_export_and_cannot_be_used_with_export_Asterisk: diag(2498, ts.DiagnosticCategory.Error, "Module_0_uses_export_and_cannot_be_used_with_export_Asterisk_2498", "Module '{0}' uses 'export =' and cannot be used with 'export *'."), + An_interface_can_only_extend_an_identifier_Slashqualified_name_with_optional_type_arguments: diag(2499, ts.DiagnosticCategory.Error, "An_interface_can_only_extend_an_identifier_Slashqualified_name_with_optional_type_arguments_2499", "An interface can only extend an identifier/qualified-name with optional type arguments."), + A_class_can_only_implement_an_identifier_Slashqualified_name_with_optional_type_arguments: diag(2500, ts.DiagnosticCategory.Error, "A_class_can_only_implement_an_identifier_Slashqualified_name_with_optional_type_arguments_2500", "A class can only implement an identifier/qualified-name with optional type arguments."), + A_rest_element_cannot_contain_a_binding_pattern: diag(2501, ts.DiagnosticCategory.Error, "A_rest_element_cannot_contain_a_binding_pattern_2501", "A rest element cannot contain a binding pattern."), + _0_is_referenced_directly_or_indirectly_in_its_own_type_annotation: diag(2502, ts.DiagnosticCategory.Error, "_0_is_referenced_directly_or_indirectly_in_its_own_type_annotation_2502", "'{0}' is referenced directly or indirectly in its own type annotation."), + Cannot_find_namespace_0: diag(2503, ts.DiagnosticCategory.Error, "Cannot_find_namespace_0_2503", "Cannot find namespace '{0}'."), + Type_0_must_have_a_Symbol_asyncIterator_method_that_returns_an_async_iterator: diag(2504, ts.DiagnosticCategory.Error, "Type_0_must_have_a_Symbol_asyncIterator_method_that_returns_an_async_iterator_2504", "Type '{0}' must have a '[Symbol.asyncIterator]()' method that returns an async iterator."), + A_generator_cannot_have_a_void_type_annotation: diag(2505, ts.DiagnosticCategory.Error, "A_generator_cannot_have_a_void_type_annotation_2505", "A generator cannot have a 'void' type annotation."), + _0_is_referenced_directly_or_indirectly_in_its_own_base_expression: diag(2506, ts.DiagnosticCategory.Error, "_0_is_referenced_directly_or_indirectly_in_its_own_base_expression_2506", "'{0}' is referenced directly or indirectly in its own base expression."), + Type_0_is_not_a_constructor_function_type: diag(2507, ts.DiagnosticCategory.Error, "Type_0_is_not_a_constructor_function_type_2507", "Type '{0}' is not a constructor function type."), + No_base_constructor_has_the_specified_number_of_type_arguments: diag(2508, ts.DiagnosticCategory.Error, "No_base_constructor_has_the_specified_number_of_type_arguments_2508", "No base constructor has the specified number of type arguments."), + Base_constructor_return_type_0_is_not_an_object_type_or_intersection_of_object_types_with_statically_known_members: diag(2509, ts.DiagnosticCategory.Error, "Base_constructor_return_type_0_is_not_an_object_type_or_intersection_of_object_types_with_statically_2509", "Base constructor return type '{0}' is not an object type or intersection of object types with statically known members."), + Base_constructors_must_all_have_the_same_return_type: diag(2510, ts.DiagnosticCategory.Error, "Base_constructors_must_all_have_the_same_return_type_2510", "Base constructors must all have the same return type."), + Cannot_create_an_instance_of_an_abstract_class: diag(2511, ts.DiagnosticCategory.Error, "Cannot_create_an_instance_of_an_abstract_class_2511", "Cannot create an instance of an abstract class."), + Overload_signatures_must_all_be_abstract_or_non_abstract: diag(2512, ts.DiagnosticCategory.Error, "Overload_signatures_must_all_be_abstract_or_non_abstract_2512", "Overload signatures must all be abstract or non-abstract."), + Abstract_method_0_in_class_1_cannot_be_accessed_via_super_expression: diag(2513, ts.DiagnosticCategory.Error, "Abstract_method_0_in_class_1_cannot_be_accessed_via_super_expression_2513", "Abstract method '{0}' in class '{1}' cannot be accessed via super expression."), + Classes_containing_abstract_methods_must_be_marked_abstract: diag(2514, ts.DiagnosticCategory.Error, "Classes_containing_abstract_methods_must_be_marked_abstract_2514", "Classes containing abstract methods must be marked abstract."), + Non_abstract_class_0_does_not_implement_inherited_abstract_member_1_from_class_2: diag(2515, ts.DiagnosticCategory.Error, "Non_abstract_class_0_does_not_implement_inherited_abstract_member_1_from_class_2_2515", "Non-abstract class '{0}' does not implement inherited abstract member '{1}' from class '{2}'."), + All_declarations_of_an_abstract_method_must_be_consecutive: diag(2516, ts.DiagnosticCategory.Error, "All_declarations_of_an_abstract_method_must_be_consecutive_2516", "All declarations of an abstract method must be consecutive."), + Cannot_assign_an_abstract_constructor_type_to_a_non_abstract_constructor_type: diag(2517, ts.DiagnosticCategory.Error, "Cannot_assign_an_abstract_constructor_type_to_a_non_abstract_constructor_type_2517", "Cannot assign an abstract constructor type to a non-abstract constructor type."), + A_this_based_type_guard_is_not_compatible_with_a_parameter_based_type_guard: diag(2518, ts.DiagnosticCategory.Error, "A_this_based_type_guard_is_not_compatible_with_a_parameter_based_type_guard_2518", "A 'this'-based type guard is not compatible with a parameter-based type guard."), + An_async_iterator_must_have_a_next_method: diag(2519, ts.DiagnosticCategory.Error, "An_async_iterator_must_have_a_next_method_2519", "An async iterator must have a 'next()' method."), + Duplicate_identifier_0_Compiler_uses_declaration_1_to_support_async_functions: diag(2520, ts.DiagnosticCategory.Error, "Duplicate_identifier_0_Compiler_uses_declaration_1_to_support_async_functions_2520", "Duplicate identifier '{0}'. Compiler uses declaration '{1}' to support async functions."), + Expression_resolves_to_variable_declaration_0_that_compiler_uses_to_support_async_functions: diag(2521, ts.DiagnosticCategory.Error, "Expression_resolves_to_variable_declaration_0_that_compiler_uses_to_support_async_functions_2521", "Expression resolves to variable declaration '{0}' that compiler uses to support async functions."), + The_arguments_object_cannot_be_referenced_in_an_async_function_or_method_in_ES3_and_ES5_Consider_using_a_standard_function_or_method: diag(2522, ts.DiagnosticCategory.Error, "The_arguments_object_cannot_be_referenced_in_an_async_function_or_method_in_ES3_and_ES5_Consider_usi_2522", "The 'arguments' object cannot be referenced in an async function or method in ES3 and ES5. Consider using a standard function or method."), + yield_expressions_cannot_be_used_in_a_parameter_initializer: diag(2523, ts.DiagnosticCategory.Error, "yield_expressions_cannot_be_used_in_a_parameter_initializer_2523", "'yield' expressions cannot be used in a parameter initializer."), + await_expressions_cannot_be_used_in_a_parameter_initializer: diag(2524, ts.DiagnosticCategory.Error, "await_expressions_cannot_be_used_in_a_parameter_initializer_2524", "'await' expressions cannot be used in a parameter initializer."), + Initializer_provides_no_value_for_this_binding_element_and_the_binding_element_has_no_default_value: diag(2525, ts.DiagnosticCategory.Error, "Initializer_provides_no_value_for_this_binding_element_and_the_binding_element_has_no_default_value_2525", "Initializer provides no value for this binding element and the binding element has no default value."), + A_this_type_is_available_only_in_a_non_static_member_of_a_class_or_interface: diag(2526, ts.DiagnosticCategory.Error, "A_this_type_is_available_only_in_a_non_static_member_of_a_class_or_interface_2526", "A 'this' type is available only in a non-static member of a class or interface."), + The_inferred_type_of_0_references_an_inaccessible_1_type_A_type_annotation_is_necessary: diag(2527, ts.DiagnosticCategory.Error, "The_inferred_type_of_0_references_an_inaccessible_1_type_A_type_annotation_is_necessary_2527", "The inferred type of '{0}' references an inaccessible '{1}' type. A type annotation is necessary."), + A_module_cannot_have_multiple_default_exports: diag(2528, ts.DiagnosticCategory.Error, "A_module_cannot_have_multiple_default_exports_2528", "A module cannot have multiple default exports."), + Duplicate_identifier_0_Compiler_reserves_name_1_in_top_level_scope_of_a_module_containing_async_functions: diag(2529, ts.DiagnosticCategory.Error, "Duplicate_identifier_0_Compiler_reserves_name_1_in_top_level_scope_of_a_module_containing_async_func_2529", "Duplicate identifier '{0}'. Compiler reserves name '{1}' in top level scope of a module containing async functions."), + Property_0_is_incompatible_with_index_signature: diag(2530, ts.DiagnosticCategory.Error, "Property_0_is_incompatible_with_index_signature_2530", "Property '{0}' is incompatible with index signature."), + Object_is_possibly_null: diag(2531, ts.DiagnosticCategory.Error, "Object_is_possibly_null_2531", "Object is possibly 'null'."), + Object_is_possibly_undefined: diag(2532, ts.DiagnosticCategory.Error, "Object_is_possibly_undefined_2532", "Object is possibly 'undefined'."), + Object_is_possibly_null_or_undefined: diag(2533, ts.DiagnosticCategory.Error, "Object_is_possibly_null_or_undefined_2533", "Object is possibly 'null' or 'undefined'."), + A_function_returning_never_cannot_have_a_reachable_end_point: diag(2534, ts.DiagnosticCategory.Error, "A_function_returning_never_cannot_have_a_reachable_end_point_2534", "A function returning 'never' cannot have a reachable end point."), + Enum_type_0_has_members_with_initializers_that_are_not_literals: diag(2535, ts.DiagnosticCategory.Error, "Enum_type_0_has_members_with_initializers_that_are_not_literals_2535", "Enum type '{0}' has members with initializers that are not literals."), + Type_0_cannot_be_used_to_index_type_1: diag(2536, ts.DiagnosticCategory.Error, "Type_0_cannot_be_used_to_index_type_1_2536", "Type '{0}' cannot be used to index type '{1}'."), + Type_0_has_no_matching_index_signature_for_type_1: diag(2537, ts.DiagnosticCategory.Error, "Type_0_has_no_matching_index_signature_for_type_1_2537", "Type '{0}' has no matching index signature for type '{1}'."), + Type_0_cannot_be_used_as_an_index_type: diag(2538, ts.DiagnosticCategory.Error, "Type_0_cannot_be_used_as_an_index_type_2538", "Type '{0}' cannot be used as an index type."), + Cannot_assign_to_0_because_it_is_not_a_variable: diag(2539, ts.DiagnosticCategory.Error, "Cannot_assign_to_0_because_it_is_not_a_variable_2539", "Cannot assign to '{0}' because it is not a variable."), + Cannot_assign_to_0_because_it_is_a_read_only_property: diag(2540, ts.DiagnosticCategory.Error, "Cannot_assign_to_0_because_it_is_a_read_only_property_2540", "Cannot assign to '{0}' because it is a read-only property."), + The_target_of_an_assignment_must_be_a_variable_or_a_property_access: diag(2541, ts.DiagnosticCategory.Error, "The_target_of_an_assignment_must_be_a_variable_or_a_property_access_2541", "The target of an assignment must be a variable or a property access."), + Index_signature_in_type_0_only_permits_reading: diag(2542, ts.DiagnosticCategory.Error, "Index_signature_in_type_0_only_permits_reading_2542", "Index signature in type '{0}' only permits reading."), + Duplicate_identifier_newTarget_Compiler_uses_variable_declaration_newTarget_to_capture_new_target_meta_property_reference: diag(2543, ts.DiagnosticCategory.Error, "Duplicate_identifier_newTarget_Compiler_uses_variable_declaration_newTarget_to_capture_new_target_me_2543", "Duplicate identifier '_newTarget'. Compiler uses variable declaration '_newTarget' to capture 'new.target' meta-property reference."), + Expression_resolves_to_variable_declaration_newTarget_that_compiler_uses_to_capture_new_target_meta_property_reference: diag(2544, ts.DiagnosticCategory.Error, "Expression_resolves_to_variable_declaration_newTarget_that_compiler_uses_to_capture_new_target_meta__2544", "Expression resolves to variable declaration '_newTarget' that compiler uses to capture 'new.target' meta-property reference."), + A_mixin_class_must_have_a_constructor_with_a_single_rest_parameter_of_type_any: diag(2545, ts.DiagnosticCategory.Error, "A_mixin_class_must_have_a_constructor_with_a_single_rest_parameter_of_type_any_2545", "A mixin class must have a constructor with a single rest parameter of type 'any[]'."), + The_type_returned_by_the_0_method_of_an_async_iterator_must_be_a_promise_for_a_type_with_a_value_property: diag(2547, ts.DiagnosticCategory.Error, "The_type_returned_by_the_0_method_of_an_async_iterator_must_be_a_promise_for_a_type_with_a_value_pro_2547", "The type returned by the '{0}()' method of an async iterator must be a promise for a type with a 'value' property."), + Type_0_is_not_an_array_type_or_does_not_have_a_Symbol_iterator_method_that_returns_an_iterator: diag(2548, ts.DiagnosticCategory.Error, "Type_0_is_not_an_array_type_or_does_not_have_a_Symbol_iterator_method_that_returns_an_iterator_2548", "Type '{0}' is not an array type or does not have a '[Symbol.iterator]()' method that returns an iterator."), + Type_0_is_not_an_array_type_or_a_string_type_or_does_not_have_a_Symbol_iterator_method_that_returns_an_iterator: diag(2549, ts.DiagnosticCategory.Error, "Type_0_is_not_an_array_type_or_a_string_type_or_does_not_have_a_Symbol_iterator_method_that_returns__2549", "Type '{0}' is not an array type or a string type or does not have a '[Symbol.iterator]()' method that returns an iterator."), + Property_0_does_not_exist_on_type_1_Did_you_mean_2: diag(2551, ts.DiagnosticCategory.Error, "Property_0_does_not_exist_on_type_1_Did_you_mean_2_2551", "Property '{0}' does not exist on type '{1}'. Did you mean '{2}'?"), + Cannot_find_name_0_Did_you_mean_1: diag(2552, ts.DiagnosticCategory.Error, "Cannot_find_name_0_Did_you_mean_1_2552", "Cannot find name '{0}'. Did you mean '{1}'?"), + Computed_values_are_not_permitted_in_an_enum_with_string_valued_members: diag(2553, ts.DiagnosticCategory.Error, "Computed_values_are_not_permitted_in_an_enum_with_string_valued_members_2553", "Computed values are not permitted in an enum with string valued members."), + Expected_0_arguments_but_got_1: diag(2554, ts.DiagnosticCategory.Error, "Expected_0_arguments_but_got_1_2554", "Expected {0} arguments, but got {1}."), + Expected_at_least_0_arguments_but_got_1: diag(2555, ts.DiagnosticCategory.Error, "Expected_at_least_0_arguments_but_got_1_2555", "Expected at least {0} arguments, but got {1}."), + Expected_0_arguments_but_got_1_or_more: diag(2556, ts.DiagnosticCategory.Error, "Expected_0_arguments_but_got_1_or_more_2556", "Expected {0} arguments, but got {1} or more."), + Expected_at_least_0_arguments_but_got_1_or_more: diag(2557, ts.DiagnosticCategory.Error, "Expected_at_least_0_arguments_but_got_1_or_more_2557", "Expected at least {0} arguments, but got {1} or more."), + Expected_0_type_arguments_but_got_1: diag(2558, ts.DiagnosticCategory.Error, "Expected_0_type_arguments_but_got_1_2558", "Expected {0} type arguments, but got {1}."), + Type_0_has_no_properties_in_common_with_type_1: diag(2559, ts.DiagnosticCategory.Error, "Type_0_has_no_properties_in_common_with_type_1_2559", "Type '{0}' has no properties in common with type '{1}'."), + Value_of_type_0_has_no_properties_in_common_with_type_1_Did_you_mean_to_call_it: diag(2560, ts.DiagnosticCategory.Error, "Value_of_type_0_has_no_properties_in_common_with_type_1_Did_you_mean_to_call_it_2560", "Value of type '{0}' has no properties in common with type '{1}'. Did you mean to call it?"), + Object_literal_may_only_specify_known_properties_but_0_does_not_exist_in_type_1_Did_you_mean_to_write_2: diag(2561, ts.DiagnosticCategory.Error, "Object_literal_may_only_specify_known_properties_but_0_does_not_exist_in_type_1_Did_you_mean_to_writ_2561", "Object literal may only specify known properties, but '{0}' does not exist in type '{1}'. Did you mean to write '{2}'?"), + Base_class_expressions_cannot_reference_class_type_parameters: diag(2562, ts.DiagnosticCategory.Error, "Base_class_expressions_cannot_reference_class_type_parameters_2562", "Base class expressions cannot reference class type parameters."), + The_containing_function_or_module_body_is_too_large_for_control_flow_analysis: diag(2563, ts.DiagnosticCategory.Error, "The_containing_function_or_module_body_is_too_large_for_control_flow_analysis_2563", "The containing function or module body is too large for control flow analysis."), + Property_0_has_no_initializer_and_is_not_definitely_assigned_in_the_constructor: diag(2564, ts.DiagnosticCategory.Error, "Property_0_has_no_initializer_and_is_not_definitely_assigned_in_the_constructor_2564", "Property '{0}' has no initializer and is not definitely assigned in the constructor."), + Property_0_is_used_before_being_assigned: diag(2565, ts.DiagnosticCategory.Error, "Property_0_is_used_before_being_assigned_2565", "Property '{0}' is used before being assigned."), + A_rest_element_cannot_have_a_property_name: diag(2566, ts.DiagnosticCategory.Error, "A_rest_element_cannot_have_a_property_name_2566", "A rest element cannot have a property name."), + Enum_declarations_can_only_merge_with_namespace_or_other_enum_declarations: diag(2567, ts.DiagnosticCategory.Error, "Enum_declarations_can_only_merge_with_namespace_or_other_enum_declarations_2567", "Enum declarations can only merge with namespace or other enum declarations."), + Type_0_is_not_an_array_type_or_a_string_type_Use_compiler_option_downlevelIteration_to_allow_iterating_of_iterators: diag(2569, ts.DiagnosticCategory.Error, "Type_0_is_not_an_array_type_or_a_string_type_Use_compiler_option_downlevelIteration_to_allow_iterati_2569", "Type '{0}' is not an array type or a string type. Use compiler option '--downlevelIteration' to allow iterating of iterators."), + Object_is_of_type_unknown: diag(2571, ts.DiagnosticCategory.Error, "Object_is_of_type_unknown_2571", "Object is of type 'unknown'."), + Rest_signatures_are_incompatible: diag(2572, ts.DiagnosticCategory.Error, "Rest_signatures_are_incompatible_2572", "Rest signatures are incompatible."), + Property_0_is_incompatible_with_rest_element_type: diag(2573, ts.DiagnosticCategory.Error, "Property_0_is_incompatible_with_rest_element_type_2573", "Property '{0}' is incompatible with rest element type."), + A_rest_element_type_must_be_an_array_type: diag(2574, ts.DiagnosticCategory.Error, "A_rest_element_type_must_be_an_array_type_2574", "A rest element type must be an array type."), + No_overload_expects_0_arguments_but_overloads_do_exist_that_expect_either_1_or_2_arguments: diag(2575, ts.DiagnosticCategory.Error, "No_overload_expects_0_arguments_but_overloads_do_exist_that_expect_either_1_or_2_arguments_2575", "No overload expects {0} arguments, but overloads do exist that expect either {1} or {2} arguments."), + Property_0_is_a_static_member_of_type_1: diag(2576, ts.DiagnosticCategory.Error, "Property_0_is_a_static_member_of_type_1_2576", "Property '{0}' is a static member of type '{1}'"), + Return_type_annotation_circularly_references_itself: diag(2577, ts.DiagnosticCategory.Error, "Return_type_annotation_circularly_references_itself_2577", "Return type annotation circularly references itself."), + Unused_ts_expect_error_directive: diag(2578, ts.DiagnosticCategory.Error, "Unused_ts_expect_error_directive_2578", "Unused '@ts-expect-error' directive."), + Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_node_Try_npm_i_types_Slashnode: diag(2580, ts.DiagnosticCategory.Error, "Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_node_Try_npm_i_types_Slashnode_2580", "Cannot find name '{0}'. Do you need to install type definitions for node? Try `npm i @types/node`."), + Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_jQuery_Try_npm_i_types_Slashjquery: diag(2581, ts.DiagnosticCategory.Error, "Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_jQuery_Try_npm_i_types_Slashjquery_2581", "Cannot find name '{0}'. Do you need to install type definitions for jQuery? Try `npm i @types/jquery`."), + Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_a_test_runner_Try_npm_i_types_Slashjest_or_npm_i_types_Slashmocha: diag(2582, ts.DiagnosticCategory.Error, "Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_a_test_runner_Try_npm_i_types_Slashje_2582", "Cannot find name '{0}'. Do you need to install type definitions for a test runner? Try `npm i @types/jest` or `npm i @types/mocha`."), + Cannot_find_name_0_Do_you_need_to_change_your_target_library_Try_changing_the_lib_compiler_option_to_es2015_or_later: diag(2583, ts.DiagnosticCategory.Error, "Cannot_find_name_0_Do_you_need_to_change_your_target_library_Try_changing_the_lib_compiler_option_to_2583", "Cannot find name '{0}'. Do you need to change your target library? Try changing the `lib` compiler option to es2015 or later."), + Cannot_find_name_0_Do_you_need_to_change_your_target_library_Try_changing_the_lib_compiler_option_to_include_dom: diag(2584, ts.DiagnosticCategory.Error, "Cannot_find_name_0_Do_you_need_to_change_your_target_library_Try_changing_the_lib_compiler_option_to_2584", "Cannot find name '{0}'. Do you need to change your target library? Try changing the `lib` compiler option to include 'dom'."), + _0_only_refers_to_a_type_but_is_being_used_as_a_value_here_Do_you_need_to_change_your_target_library_Try_changing_the_lib_compiler_option_to_es2015_or_later: diag(2585, ts.DiagnosticCategory.Error, "_0_only_refers_to_a_type_but_is_being_used_as_a_value_here_Do_you_need_to_change_your_target_library_2585", "'{0}' only refers to a type, but is being used as a value here. Do you need to change your target library? Try changing the `lib` compiler option to es2015 or later."), + Enum_type_0_circularly_references_itself: diag(2586, ts.DiagnosticCategory.Error, "Enum_type_0_circularly_references_itself_2586", "Enum type '{0}' circularly references itself."), + JSDoc_type_0_circularly_references_itself: diag(2587, ts.DiagnosticCategory.Error, "JSDoc_type_0_circularly_references_itself_2587", "JSDoc type '{0}' circularly references itself."), + Cannot_assign_to_0_because_it_is_a_constant: diag(2588, ts.DiagnosticCategory.Error, "Cannot_assign_to_0_because_it_is_a_constant_2588", "Cannot assign to '{0}' because it is a constant."), + Type_instantiation_is_excessively_deep_and_possibly_infinite: diag(2589, ts.DiagnosticCategory.Error, "Type_instantiation_is_excessively_deep_and_possibly_infinite_2589", "Type instantiation is excessively deep and possibly infinite."), + Expression_produces_a_union_type_that_is_too_complex_to_represent: diag(2590, ts.DiagnosticCategory.Error, "Expression_produces_a_union_type_that_is_too_complex_to_represent_2590", "Expression produces a union type that is too complex to represent."), + Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_node_Try_npm_i_types_Slashnode_and_then_add_node_to_the_types_field_in_your_tsconfig: diag(2591, ts.DiagnosticCategory.Error, "Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_node_Try_npm_i_types_Slashnode_and_th_2591", "Cannot find name '{0}'. Do you need to install type definitions for node? Try `npm i @types/node` and then add `node` to the types field in your tsconfig."), + Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_jQuery_Try_npm_i_types_Slashjquery_and_then_add_jquery_to_the_types_field_in_your_tsconfig: diag(2592, ts.DiagnosticCategory.Error, "Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_jQuery_Try_npm_i_types_Slashjquery_an_2592", "Cannot find name '{0}'. Do you need to install type definitions for jQuery? Try `npm i @types/jquery` and then add `jquery` to the types field in your tsconfig."), + Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_a_test_runner_Try_npm_i_types_Slashjest_or_npm_i_types_Slashmocha_and_then_add_jest_or_mocha_to_the_types_field_in_your_tsconfig: diag(2593, ts.DiagnosticCategory.Error, "Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_a_test_runner_Try_npm_i_types_Slashje_2593", "Cannot find name '{0}'. Do you need to install type definitions for a test runner? Try `npm i @types/jest` or `npm i @types/mocha` and then add `jest` or `mocha` to the types field in your tsconfig."), + This_module_is_declared_with_using_export_and_can_only_be_used_with_a_default_import_when_using_the_0_flag: diag(2594, ts.DiagnosticCategory.Error, "This_module_is_declared_with_using_export_and_can_only_be_used_with_a_default_import_when_using_the__2594", "This module is declared with using 'export =', and can only be used with a default import when using the '{0}' flag."), + _0_can_only_be_imported_by_using_a_default_import: diag(2595, ts.DiagnosticCategory.Error, "_0_can_only_be_imported_by_using_a_default_import_2595", "'{0}' can only be imported by using a default import."), + _0_can_only_be_imported_by_turning_on_the_esModuleInterop_flag_and_using_a_default_import: diag(2596, ts.DiagnosticCategory.Error, "_0_can_only_be_imported_by_turning_on_the_esModuleInterop_flag_and_using_a_default_import_2596", "'{0}' can only be imported by turning on the 'esModuleInterop' flag and using a default import."), + _0_can_only_be_imported_by_using_a_require_call_or_by_using_a_default_import: diag(2597, ts.DiagnosticCategory.Error, "_0_can_only_be_imported_by_using_a_require_call_or_by_using_a_default_import_2597", "'{0}' can only be imported by using a 'require' call or by using a default import."), + _0_can_only_be_imported_by_using_a_require_call_or_by_turning_on_the_esModuleInterop_flag_and_using_a_default_import: diag(2598, ts.DiagnosticCategory.Error, "_0_can_only_be_imported_by_using_a_require_call_or_by_turning_on_the_esModuleInterop_flag_and_using__2598", "'{0}' can only be imported by using a 'require' call or by turning on the 'esModuleInterop' flag and using a default import."), + JSX_element_attributes_type_0_may_not_be_a_union_type: diag(2600, ts.DiagnosticCategory.Error, "JSX_element_attributes_type_0_may_not_be_a_union_type_2600", "JSX element attributes type '{0}' may not be a union type."), + The_return_type_of_a_JSX_element_constructor_must_return_an_object_type: diag(2601, ts.DiagnosticCategory.Error, "The_return_type_of_a_JSX_element_constructor_must_return_an_object_type_2601", "The return type of a JSX element constructor must return an object type."), + JSX_element_implicitly_has_type_any_because_the_global_type_JSX_Element_does_not_exist: diag(2602, ts.DiagnosticCategory.Error, "JSX_element_implicitly_has_type_any_because_the_global_type_JSX_Element_does_not_exist_2602", "JSX element implicitly has type 'any' because the global type 'JSX.Element' does not exist."), + Property_0_in_type_1_is_not_assignable_to_type_2: diag(2603, ts.DiagnosticCategory.Error, "Property_0_in_type_1_is_not_assignable_to_type_2_2603", "Property '{0}' in type '{1}' is not assignable to type '{2}'."), + JSX_element_type_0_does_not_have_any_construct_or_call_signatures: diag(2604, ts.DiagnosticCategory.Error, "JSX_element_type_0_does_not_have_any_construct_or_call_signatures_2604", "JSX element type '{0}' does not have any construct or call signatures."), + JSX_element_type_0_is_not_a_constructor_function_for_JSX_elements: diag(2605, ts.DiagnosticCategory.Error, "JSX_element_type_0_is_not_a_constructor_function_for_JSX_elements_2605", "JSX element type '{0}' is not a constructor function for JSX elements."), + Property_0_of_JSX_spread_attribute_is_not_assignable_to_target_property: diag(2606, ts.DiagnosticCategory.Error, "Property_0_of_JSX_spread_attribute_is_not_assignable_to_target_property_2606", "Property '{0}' of JSX spread attribute is not assignable to target property."), + JSX_element_class_does_not_support_attributes_because_it_does_not_have_a_0_property: diag(2607, ts.DiagnosticCategory.Error, "JSX_element_class_does_not_support_attributes_because_it_does_not_have_a_0_property_2607", "JSX element class does not support attributes because it does not have a '{0}' property."), + The_global_type_JSX_0_may_not_have_more_than_one_property: diag(2608, ts.DiagnosticCategory.Error, "The_global_type_JSX_0_may_not_have_more_than_one_property_2608", "The global type 'JSX.{0}' may not have more than one property."), + JSX_spread_child_must_be_an_array_type: diag(2609, ts.DiagnosticCategory.Error, "JSX_spread_child_must_be_an_array_type_2609", "JSX spread child must be an array type."), + _0_is_defined_as_an_accessor_in_class_1_but_is_overridden_here_in_2_as_an_instance_property: diag(2610, ts.DiagnosticCategory.Error, "_0_is_defined_as_an_accessor_in_class_1_but_is_overridden_here_in_2_as_an_instance_property_2610", "'{0}' is defined as an accessor in class '{1}', but is overridden here in '{2}' as an instance property."), + _0_is_defined_as_a_property_in_class_1_but_is_overridden_here_in_2_as_an_accessor: diag(2611, ts.DiagnosticCategory.Error, "_0_is_defined_as_a_property_in_class_1_but_is_overridden_here_in_2_as_an_accessor_2611", "'{0}' is defined as a property in class '{1}', but is overridden here in '{2}' as an accessor."), + Property_0_will_overwrite_the_base_property_in_1_If_this_is_intentional_add_an_initializer_Otherwise_add_a_declare_modifier_or_remove_the_redundant_declaration: diag(2612, ts.DiagnosticCategory.Error, "Property_0_will_overwrite_the_base_property_in_1_If_this_is_intentional_add_an_initializer_Otherwise_2612", "Property '{0}' will overwrite the base property in '{1}'. If this is intentional, add an initializer. Otherwise, add a 'declare' modifier or remove the redundant declaration."), + Module_0_has_no_default_export_Did_you_mean_to_use_import_1_from_0_instead: diag(2613, ts.DiagnosticCategory.Error, "Module_0_has_no_default_export_Did_you_mean_to_use_import_1_from_0_instead_2613", "Module '{0}' has no default export. Did you mean to use 'import { {1} } from {0}' instead?"), + Module_0_has_no_exported_member_1_Did_you_mean_to_use_import_1_from_0_instead: diag(2614, ts.DiagnosticCategory.Error, "Module_0_has_no_exported_member_1_Did_you_mean_to_use_import_1_from_0_instead_2614", "Module '{0}' has no exported member '{1}'. Did you mean to use 'import {1} from {0}' instead?"), + Type_of_property_0_circularly_references_itself_in_mapped_type_1: diag(2615, ts.DiagnosticCategory.Error, "Type_of_property_0_circularly_references_itself_in_mapped_type_1_2615", "Type of property '{0}' circularly references itself in mapped type '{1}'."), + _0_can_only_be_imported_by_using_import_1_require_2_or_a_default_import: diag(2616, ts.DiagnosticCategory.Error, "_0_can_only_be_imported_by_using_import_1_require_2_or_a_default_import_2616", "'{0}' can only be imported by using 'import {1} = require({2})' or a default import."), + _0_can_only_be_imported_by_using_import_1_require_2_or_by_turning_on_the_esModuleInterop_flag_and_using_a_default_import: diag(2617, ts.DiagnosticCategory.Error, "_0_can_only_be_imported_by_using_import_1_require_2_or_by_turning_on_the_esModuleInterop_flag_and_us_2617", "'{0}' can only be imported by using 'import {1} = require({2})' or by turning on the 'esModuleInterop' flag and using a default import."), + Cannot_augment_module_0_with_value_exports_because_it_resolves_to_a_non_module_entity: diag(2649, ts.DiagnosticCategory.Error, "Cannot_augment_module_0_with_value_exports_because_it_resolves_to_a_non_module_entity_2649", "Cannot augment module '{0}' with value exports because it resolves to a non-module entity."), + A_member_initializer_in_a_enum_declaration_cannot_reference_members_declared_after_it_including_members_defined_in_other_enums: diag(2651, ts.DiagnosticCategory.Error, "A_member_initializer_in_a_enum_declaration_cannot_reference_members_declared_after_it_including_memb_2651", "A member initializer in a enum declaration cannot reference members declared after it, including members defined in other enums."), + Merged_declaration_0_cannot_include_a_default_export_declaration_Consider_adding_a_separate_export_default_0_declaration_instead: diag(2652, ts.DiagnosticCategory.Error, "Merged_declaration_0_cannot_include_a_default_export_declaration_Consider_adding_a_separate_export_d_2652", "Merged declaration '{0}' cannot include a default export declaration. Consider adding a separate 'export default {0}' declaration instead."), + Non_abstract_class_expression_does_not_implement_inherited_abstract_member_0_from_class_1: diag(2653, ts.DiagnosticCategory.Error, "Non_abstract_class_expression_does_not_implement_inherited_abstract_member_0_from_class_1_2653", "Non-abstract class expression does not implement inherited abstract member '{0}' from class '{1}'."), + Exported_external_package_typings_file_cannot_contain_tripleslash_references_Please_contact_the_package_author_to_update_the_package_definition: diag(2654, ts.DiagnosticCategory.Error, "Exported_external_package_typings_file_cannot_contain_tripleslash_references_Please_contact_the_pack_2654", "Exported external package typings file cannot contain tripleslash references. Please contact the package author to update the package definition."), + Exported_external_package_typings_file_0_is_not_a_module_Please_contact_the_package_author_to_update_the_package_definition: diag(2656, ts.DiagnosticCategory.Error, "Exported_external_package_typings_file_0_is_not_a_module_Please_contact_the_package_author_to_update_2656", "Exported external package typings file '{0}' is not a module. Please contact the package author to update the package definition."), + JSX_expressions_must_have_one_parent_element: diag(2657, ts.DiagnosticCategory.Error, "JSX_expressions_must_have_one_parent_element_2657", "JSX expressions must have one parent element."), + Type_0_provides_no_match_for_the_signature_1: diag(2658, ts.DiagnosticCategory.Error, "Type_0_provides_no_match_for_the_signature_1_2658", "Type '{0}' provides no match for the signature '{1}'."), + super_is_only_allowed_in_members_of_object_literal_expressions_when_option_target_is_ES2015_or_higher: diag(2659, ts.DiagnosticCategory.Error, "super_is_only_allowed_in_members_of_object_literal_expressions_when_option_target_is_ES2015_or_highe_2659", "'super' is only allowed in members of object literal expressions when option 'target' is 'ES2015' or higher."), + super_can_only_be_referenced_in_members_of_derived_classes_or_object_literal_expressions: diag(2660, ts.DiagnosticCategory.Error, "super_can_only_be_referenced_in_members_of_derived_classes_or_object_literal_expressions_2660", "'super' can only be referenced in members of derived classes or object literal expressions."), + Cannot_export_0_Only_local_declarations_can_be_exported_from_a_module: diag(2661, ts.DiagnosticCategory.Error, "Cannot_export_0_Only_local_declarations_can_be_exported_from_a_module_2661", "Cannot export '{0}'. Only local declarations can be exported from a module."), + Cannot_find_name_0_Did_you_mean_the_static_member_1_0: diag(2662, ts.DiagnosticCategory.Error, "Cannot_find_name_0_Did_you_mean_the_static_member_1_0_2662", "Cannot find name '{0}'. Did you mean the static member '{1}.{0}'?"), + Cannot_find_name_0_Did_you_mean_the_instance_member_this_0: diag(2663, ts.DiagnosticCategory.Error, "Cannot_find_name_0_Did_you_mean_the_instance_member_this_0_2663", "Cannot find name '{0}'. Did you mean the instance member 'this.{0}'?"), + Invalid_module_name_in_augmentation_module_0_cannot_be_found: diag(2664, ts.DiagnosticCategory.Error, "Invalid_module_name_in_augmentation_module_0_cannot_be_found_2664", "Invalid module name in augmentation, module '{0}' cannot be found."), + Invalid_module_name_in_augmentation_Module_0_resolves_to_an_untyped_module_at_1_which_cannot_be_augmented: diag(2665, ts.DiagnosticCategory.Error, "Invalid_module_name_in_augmentation_Module_0_resolves_to_an_untyped_module_at_1_which_cannot_be_augm_2665", "Invalid module name in augmentation. Module '{0}' resolves to an untyped module at '{1}', which cannot be augmented."), + Exports_and_export_assignments_are_not_permitted_in_module_augmentations: diag(2666, ts.DiagnosticCategory.Error, "Exports_and_export_assignments_are_not_permitted_in_module_augmentations_2666", "Exports and export assignments are not permitted in module augmentations."), + Imports_are_not_permitted_in_module_augmentations_Consider_moving_them_to_the_enclosing_external_module: diag(2667, ts.DiagnosticCategory.Error, "Imports_are_not_permitted_in_module_augmentations_Consider_moving_them_to_the_enclosing_external_mod_2667", "Imports are not permitted in module augmentations. Consider moving them to the enclosing external module."), + export_modifier_cannot_be_applied_to_ambient_modules_and_module_augmentations_since_they_are_always_visible: diag(2668, ts.DiagnosticCategory.Error, "export_modifier_cannot_be_applied_to_ambient_modules_and_module_augmentations_since_they_are_always__2668", "'export' modifier cannot be applied to ambient modules and module augmentations since they are always visible."), + Augmentations_for_the_global_scope_can_only_be_directly_nested_in_external_modules_or_ambient_module_declarations: diag(2669, ts.DiagnosticCategory.Error, "Augmentations_for_the_global_scope_can_only_be_directly_nested_in_external_modules_or_ambient_module_2669", "Augmentations for the global scope can only be directly nested in external modules or ambient module declarations."), + Augmentations_for_the_global_scope_should_have_declare_modifier_unless_they_appear_in_already_ambient_context: diag(2670, ts.DiagnosticCategory.Error, "Augmentations_for_the_global_scope_should_have_declare_modifier_unless_they_appear_in_already_ambien_2670", "Augmentations for the global scope should have 'declare' modifier unless they appear in already ambient context."), + Cannot_augment_module_0_because_it_resolves_to_a_non_module_entity: diag(2671, ts.DiagnosticCategory.Error, "Cannot_augment_module_0_because_it_resolves_to_a_non_module_entity_2671", "Cannot augment module '{0}' because it resolves to a non-module entity."), + Cannot_assign_a_0_constructor_type_to_a_1_constructor_type: diag(2672, ts.DiagnosticCategory.Error, "Cannot_assign_a_0_constructor_type_to_a_1_constructor_type_2672", "Cannot assign a '{0}' constructor type to a '{1}' constructor type."), + Constructor_of_class_0_is_private_and_only_accessible_within_the_class_declaration: diag(2673, ts.DiagnosticCategory.Error, "Constructor_of_class_0_is_private_and_only_accessible_within_the_class_declaration_2673", "Constructor of class '{0}' is private and only accessible within the class declaration."), + Constructor_of_class_0_is_protected_and_only_accessible_within_the_class_declaration: diag(2674, ts.DiagnosticCategory.Error, "Constructor_of_class_0_is_protected_and_only_accessible_within_the_class_declaration_2674", "Constructor of class '{0}' is protected and only accessible within the class declaration."), + Cannot_extend_a_class_0_Class_constructor_is_marked_as_private: diag(2675, ts.DiagnosticCategory.Error, "Cannot_extend_a_class_0_Class_constructor_is_marked_as_private_2675", "Cannot extend a class '{0}'. Class constructor is marked as private."), + Accessors_must_both_be_abstract_or_non_abstract: diag(2676, ts.DiagnosticCategory.Error, "Accessors_must_both_be_abstract_or_non_abstract_2676", "Accessors must both be abstract or non-abstract."), + A_type_predicate_s_type_must_be_assignable_to_its_parameter_s_type: diag(2677, ts.DiagnosticCategory.Error, "A_type_predicate_s_type_must_be_assignable_to_its_parameter_s_type_2677", "A type predicate's type must be assignable to its parameter's type."), + Type_0_is_not_comparable_to_type_1: diag(2678, ts.DiagnosticCategory.Error, "Type_0_is_not_comparable_to_type_1_2678", "Type '{0}' is not comparable to type '{1}'."), + A_function_that_is_called_with_the_new_keyword_cannot_have_a_this_type_that_is_void: diag(2679, ts.DiagnosticCategory.Error, "A_function_that_is_called_with_the_new_keyword_cannot_have_a_this_type_that_is_void_2679", "A function that is called with the 'new' keyword cannot have a 'this' type that is 'void'."), + A_0_parameter_must_be_the_first_parameter: diag(2680, ts.DiagnosticCategory.Error, "A_0_parameter_must_be_the_first_parameter_2680", "A '{0}' parameter must be the first parameter."), + A_constructor_cannot_have_a_this_parameter: diag(2681, ts.DiagnosticCategory.Error, "A_constructor_cannot_have_a_this_parameter_2681", "A constructor cannot have a 'this' parameter."), + get_and_set_accessor_must_have_the_same_this_type: diag(2682, ts.DiagnosticCategory.Error, "get_and_set_accessor_must_have_the_same_this_type_2682", "'get' and 'set' accessor must have the same 'this' type."), + this_implicitly_has_type_any_because_it_does_not_have_a_type_annotation: diag(2683, ts.DiagnosticCategory.Error, "this_implicitly_has_type_any_because_it_does_not_have_a_type_annotation_2683", "'this' implicitly has type 'any' because it does not have a type annotation."), + The_this_context_of_type_0_is_not_assignable_to_method_s_this_of_type_1: diag(2684, ts.DiagnosticCategory.Error, "The_this_context_of_type_0_is_not_assignable_to_method_s_this_of_type_1_2684", "The 'this' context of type '{0}' is not assignable to method's 'this' of type '{1}'."), + The_this_types_of_each_signature_are_incompatible: diag(2685, ts.DiagnosticCategory.Error, "The_this_types_of_each_signature_are_incompatible_2685", "The 'this' types of each signature are incompatible."), + _0_refers_to_a_UMD_global_but_the_current_file_is_a_module_Consider_adding_an_import_instead: diag(2686, ts.DiagnosticCategory.Error, "_0_refers_to_a_UMD_global_but_the_current_file_is_a_module_Consider_adding_an_import_instead_2686", "'{0}' refers to a UMD global, but the current file is a module. Consider adding an import instead."), + All_declarations_of_0_must_have_identical_modifiers: diag(2687, ts.DiagnosticCategory.Error, "All_declarations_of_0_must_have_identical_modifiers_2687", "All declarations of '{0}' must have identical modifiers."), + Cannot_find_type_definition_file_for_0: diag(2688, ts.DiagnosticCategory.Error, "Cannot_find_type_definition_file_for_0_2688", "Cannot find type definition file for '{0}'."), + Cannot_extend_an_interface_0_Did_you_mean_implements: diag(2689, ts.DiagnosticCategory.Error, "Cannot_extend_an_interface_0_Did_you_mean_implements_2689", "Cannot extend an interface '{0}'. Did you mean 'implements'?"), + An_import_path_cannot_end_with_a_0_extension_Consider_importing_1_instead: diag(2691, ts.DiagnosticCategory.Error, "An_import_path_cannot_end_with_a_0_extension_Consider_importing_1_instead_2691", "An import path cannot end with a '{0}' extension. Consider importing '{1}' instead."), + _0_is_a_primitive_but_1_is_a_wrapper_object_Prefer_using_0_when_possible: diag(2692, ts.DiagnosticCategory.Error, "_0_is_a_primitive_but_1_is_a_wrapper_object_Prefer_using_0_when_possible_2692", "'{0}' is a primitive, but '{1}' is a wrapper object. Prefer using '{0}' when possible."), + _0_only_refers_to_a_type_but_is_being_used_as_a_value_here: diag(2693, ts.DiagnosticCategory.Error, "_0_only_refers_to_a_type_but_is_being_used_as_a_value_here_2693", "'{0}' only refers to a type, but is being used as a value here."), + Namespace_0_has_no_exported_member_1: diag(2694, ts.DiagnosticCategory.Error, "Namespace_0_has_no_exported_member_1_2694", "Namespace '{0}' has no exported member '{1}'."), + Left_side_of_comma_operator_is_unused_and_has_no_side_effects: diag(2695, ts.DiagnosticCategory.Error, "Left_side_of_comma_operator_is_unused_and_has_no_side_effects_2695", "Left side of comma operator is unused and has no side effects.", /*reportsUnnecessary*/ true), + The_Object_type_is_assignable_to_very_few_other_types_Did_you_mean_to_use_the_any_type_instead: diag(2696, ts.DiagnosticCategory.Error, "The_Object_type_is_assignable_to_very_few_other_types_Did_you_mean_to_use_the_any_type_instead_2696", "The 'Object' type is assignable to very few other types. Did you mean to use the 'any' type instead?"), + An_async_function_or_method_must_return_a_Promise_Make_sure_you_have_a_declaration_for_Promise_or_include_ES2015_in_your_lib_option: diag(2697, ts.DiagnosticCategory.Error, "An_async_function_or_method_must_return_a_Promise_Make_sure_you_have_a_declaration_for_Promise_or_in_2697", "An async function or method must return a 'Promise'. Make sure you have a declaration for 'Promise' or include 'ES2015' in your `--lib` option."), + Spread_types_may_only_be_created_from_object_types: diag(2698, ts.DiagnosticCategory.Error, "Spread_types_may_only_be_created_from_object_types_2698", "Spread types may only be created from object types."), + Static_property_0_conflicts_with_built_in_property_Function_0_of_constructor_function_1: diag(2699, ts.DiagnosticCategory.Error, "Static_property_0_conflicts_with_built_in_property_Function_0_of_constructor_function_1_2699", "Static property '{0}' conflicts with built-in property 'Function.{0}' of constructor function '{1}'."), + Rest_types_may_only_be_created_from_object_types: diag(2700, ts.DiagnosticCategory.Error, "Rest_types_may_only_be_created_from_object_types_2700", "Rest types may only be created from object types."), + The_target_of_an_object_rest_assignment_must_be_a_variable_or_a_property_access: diag(2701, ts.DiagnosticCategory.Error, "The_target_of_an_object_rest_assignment_must_be_a_variable_or_a_property_access_2701", "The target of an object rest assignment must be a variable or a property access."), + _0_only_refers_to_a_type_but_is_being_used_as_a_namespace_here: diag(2702, ts.DiagnosticCategory.Error, "_0_only_refers_to_a_type_but_is_being_used_as_a_namespace_here_2702", "'{0}' only refers to a type, but is being used as a namespace here."), + The_operand_of_a_delete_operator_must_be_a_property_reference: diag(2703, ts.DiagnosticCategory.Error, "The_operand_of_a_delete_operator_must_be_a_property_reference_2703", "The operand of a 'delete' operator must be a property reference."), + The_operand_of_a_delete_operator_cannot_be_a_read_only_property: diag(2704, ts.DiagnosticCategory.Error, "The_operand_of_a_delete_operator_cannot_be_a_read_only_property_2704", "The operand of a 'delete' operator cannot be a read-only property."), + An_async_function_or_method_in_ES5_SlashES3_requires_the_Promise_constructor_Make_sure_you_have_a_declaration_for_the_Promise_constructor_or_include_ES2015_in_your_lib_option: diag(2705, ts.DiagnosticCategory.Error, "An_async_function_or_method_in_ES5_SlashES3_requires_the_Promise_constructor_Make_sure_you_have_a_de_2705", "An async function or method in ES5/ES3 requires the 'Promise' constructor. Make sure you have a declaration for the 'Promise' constructor or include 'ES2015' in your `--lib` option."), + Required_type_parameters_may_not_follow_optional_type_parameters: diag(2706, ts.DiagnosticCategory.Error, "Required_type_parameters_may_not_follow_optional_type_parameters_2706", "Required type parameters may not follow optional type parameters."), + Generic_type_0_requires_between_1_and_2_type_arguments: diag(2707, ts.DiagnosticCategory.Error, "Generic_type_0_requires_between_1_and_2_type_arguments_2707", "Generic type '{0}' requires between {1} and {2} type arguments."), + Cannot_use_namespace_0_as_a_value: diag(2708, ts.DiagnosticCategory.Error, "Cannot_use_namespace_0_as_a_value_2708", "Cannot use namespace '{0}' as a value."), + Cannot_use_namespace_0_as_a_type: diag(2709, ts.DiagnosticCategory.Error, "Cannot_use_namespace_0_as_a_type_2709", "Cannot use namespace '{0}' as a type."), + _0_are_specified_twice_The_attribute_named_0_will_be_overwritten: diag(2710, ts.DiagnosticCategory.Error, "_0_are_specified_twice_The_attribute_named_0_will_be_overwritten_2710", "'{0}' are specified twice. The attribute named '{0}' will be overwritten."), + A_dynamic_import_call_returns_a_Promise_Make_sure_you_have_a_declaration_for_Promise_or_include_ES2015_in_your_lib_option: diag(2711, ts.DiagnosticCategory.Error, "A_dynamic_import_call_returns_a_Promise_Make_sure_you_have_a_declaration_for_Promise_or_include_ES20_2711", "A dynamic import call returns a 'Promise'. Make sure you have a declaration for 'Promise' or include 'ES2015' in your `--lib` option."), + A_dynamic_import_call_in_ES5_SlashES3_requires_the_Promise_constructor_Make_sure_you_have_a_declaration_for_the_Promise_constructor_or_include_ES2015_in_your_lib_option: diag(2712, ts.DiagnosticCategory.Error, "A_dynamic_import_call_in_ES5_SlashES3_requires_the_Promise_constructor_Make_sure_you_have_a_declarat_2712", "A dynamic import call in ES5/ES3 requires the 'Promise' constructor. Make sure you have a declaration for the 'Promise' constructor or include 'ES2015' in your `--lib` option."), + Cannot_access_0_1_because_0_is_a_type_but_not_a_namespace_Did_you_mean_to_retrieve_the_type_of_the_property_1_in_0_with_0_1: diag(2713, ts.DiagnosticCategory.Error, "Cannot_access_0_1_because_0_is_a_type_but_not_a_namespace_Did_you_mean_to_retrieve_the_type_of_the_p_2713", "Cannot access '{0}.{1}' because '{0}' is a type, but not a namespace. Did you mean to retrieve the type of the property '{1}' in '{0}' with '{0}[\"{1}\"]'?"), + The_expression_of_an_export_assignment_must_be_an_identifier_or_qualified_name_in_an_ambient_context: diag(2714, ts.DiagnosticCategory.Error, "The_expression_of_an_export_assignment_must_be_an_identifier_or_qualified_name_in_an_ambient_context_2714", "The expression of an export assignment must be an identifier or qualified name in an ambient context."), + Abstract_property_0_in_class_1_cannot_be_accessed_in_the_constructor: diag(2715, ts.DiagnosticCategory.Error, "Abstract_property_0_in_class_1_cannot_be_accessed_in_the_constructor_2715", "Abstract property '{0}' in class '{1}' cannot be accessed in the constructor."), + Type_parameter_0_has_a_circular_default: diag(2716, ts.DiagnosticCategory.Error, "Type_parameter_0_has_a_circular_default_2716", "Type parameter '{0}' has a circular default."), + Subsequent_property_declarations_must_have_the_same_type_Property_0_must_be_of_type_1_but_here_has_type_2: diag(2717, ts.DiagnosticCategory.Error, "Subsequent_property_declarations_must_have_the_same_type_Property_0_must_be_of_type_1_but_here_has_t_2717", "Subsequent property declarations must have the same type. Property '{0}' must be of type '{1}', but here has type '{2}'."), + Duplicate_property_0: diag(2718, ts.DiagnosticCategory.Error, "Duplicate_property_0_2718", "Duplicate property '{0}'."), + Type_0_is_not_assignable_to_type_1_Two_different_types_with_this_name_exist_but_they_are_unrelated: diag(2719, ts.DiagnosticCategory.Error, "Type_0_is_not_assignable_to_type_1_Two_different_types_with_this_name_exist_but_they_are_unrelated_2719", "Type '{0}' is not assignable to type '{1}'. Two different types with this name exist, but they are unrelated."), + Class_0_incorrectly_implements_class_1_Did_you_mean_to_extend_1_and_inherit_its_members_as_a_subclass: diag(2720, ts.DiagnosticCategory.Error, "Class_0_incorrectly_implements_class_1_Did_you_mean_to_extend_1_and_inherit_its_members_as_a_subclas_2720", "Class '{0}' incorrectly implements class '{1}'. Did you mean to extend '{1}' and inherit its members as a subclass?"), + Cannot_invoke_an_object_which_is_possibly_null: diag(2721, ts.DiagnosticCategory.Error, "Cannot_invoke_an_object_which_is_possibly_null_2721", "Cannot invoke an object which is possibly 'null'."), + Cannot_invoke_an_object_which_is_possibly_undefined: diag(2722, ts.DiagnosticCategory.Error, "Cannot_invoke_an_object_which_is_possibly_undefined_2722", "Cannot invoke an object which is possibly 'undefined'."), + Cannot_invoke_an_object_which_is_possibly_null_or_undefined: diag(2723, ts.DiagnosticCategory.Error, "Cannot_invoke_an_object_which_is_possibly_null_or_undefined_2723", "Cannot invoke an object which is possibly 'null' or 'undefined'."), + Module_0_has_no_exported_member_1_Did_you_mean_2: diag(2724, ts.DiagnosticCategory.Error, "Module_0_has_no_exported_member_1_Did_you_mean_2_2724", "Module '{0}' has no exported member '{1}'. Did you mean '{2}'?"), + Class_name_cannot_be_Object_when_targeting_ES5_with_module_0: diag(2725, ts.DiagnosticCategory.Error, "Class_name_cannot_be_Object_when_targeting_ES5_with_module_0_2725", "Class name cannot be 'Object' when targeting ES5 with module {0}."), + Cannot_find_lib_definition_for_0: diag(2726, ts.DiagnosticCategory.Error, "Cannot_find_lib_definition_for_0_2726", "Cannot find lib definition for '{0}'."), + Cannot_find_lib_definition_for_0_Did_you_mean_1: diag(2727, ts.DiagnosticCategory.Error, "Cannot_find_lib_definition_for_0_Did_you_mean_1_2727", "Cannot find lib definition for '{0}'. Did you mean '{1}'?"), + _0_is_declared_here: diag(2728, ts.DiagnosticCategory.Message, "_0_is_declared_here_2728", "'{0}' is declared here."), + Property_0_is_used_before_its_initialization: diag(2729, ts.DiagnosticCategory.Error, "Property_0_is_used_before_its_initialization_2729", "Property '{0}' is used before its initialization."), + An_arrow_function_cannot_have_a_this_parameter: diag(2730, ts.DiagnosticCategory.Error, "An_arrow_function_cannot_have_a_this_parameter_2730", "An arrow function cannot have a 'this' parameter."), + Implicit_conversion_of_a_symbol_to_a_string_will_fail_at_runtime_Consider_wrapping_this_expression_in_String: diag(2731, ts.DiagnosticCategory.Error, "Implicit_conversion_of_a_symbol_to_a_string_will_fail_at_runtime_Consider_wrapping_this_expression_i_2731", "Implicit conversion of a 'symbol' to a 'string' will fail at runtime. Consider wrapping this expression in 'String(...)'."), + Cannot_find_module_0_Consider_using_resolveJsonModule_to_import_module_with_json_extension: diag(2732, ts.DiagnosticCategory.Error, "Cannot_find_module_0_Consider_using_resolveJsonModule_to_import_module_with_json_extension_2732", "Cannot find module '{0}'. Consider using '--resolveJsonModule' to import module with '.json' extension"), + Property_0_was_also_declared_here: diag(2733, ts.DiagnosticCategory.Error, "Property_0_was_also_declared_here_2733", "Property '{0}' was also declared here."), + Are_you_missing_a_semicolon: diag(2734, ts.DiagnosticCategory.Error, "Are_you_missing_a_semicolon_2734", "Are you missing a semicolon?"), + Did_you_mean_for_0_to_be_constrained_to_type_new_args_Colon_any_1: diag(2735, ts.DiagnosticCategory.Error, "Did_you_mean_for_0_to_be_constrained_to_type_new_args_Colon_any_1_2735", "Did you mean for '{0}' to be constrained to type 'new (...args: any[]) => {1}'?"), + Operator_0_cannot_be_applied_to_type_1: diag(2736, ts.DiagnosticCategory.Error, "Operator_0_cannot_be_applied_to_type_1_2736", "Operator '{0}' cannot be applied to type '{1}'."), + BigInt_literals_are_not_available_when_targeting_lower_than_ES2020: diag(2737, ts.DiagnosticCategory.Error, "BigInt_literals_are_not_available_when_targeting_lower_than_ES2020_2737", "BigInt literals are not available when targeting lower than ES2020."), + An_outer_value_of_this_is_shadowed_by_this_container: diag(2738, ts.DiagnosticCategory.Message, "An_outer_value_of_this_is_shadowed_by_this_container_2738", "An outer value of 'this' is shadowed by this container."), + Type_0_is_missing_the_following_properties_from_type_1_Colon_2: diag(2739, ts.DiagnosticCategory.Error, "Type_0_is_missing_the_following_properties_from_type_1_Colon_2_2739", "Type '{0}' is missing the following properties from type '{1}': {2}"), + Type_0_is_missing_the_following_properties_from_type_1_Colon_2_and_3_more: diag(2740, ts.DiagnosticCategory.Error, "Type_0_is_missing_the_following_properties_from_type_1_Colon_2_and_3_more_2740", "Type '{0}' is missing the following properties from type '{1}': {2}, and {3} more."), + Property_0_is_missing_in_type_1_but_required_in_type_2: diag(2741, ts.DiagnosticCategory.Error, "Property_0_is_missing_in_type_1_but_required_in_type_2_2741", "Property '{0}' is missing in type '{1}' but required in type '{2}'."), + The_inferred_type_of_0_cannot_be_named_without_a_reference_to_1_This_is_likely_not_portable_A_type_annotation_is_necessary: diag(2742, ts.DiagnosticCategory.Error, "The_inferred_type_of_0_cannot_be_named_without_a_reference_to_1_This_is_likely_not_portable_A_type_a_2742", "The inferred type of '{0}' cannot be named without a reference to '{1}'. This is likely not portable. A type annotation is necessary."), + No_overload_expects_0_type_arguments_but_overloads_do_exist_that_expect_either_1_or_2_type_arguments: diag(2743, ts.DiagnosticCategory.Error, "No_overload_expects_0_type_arguments_but_overloads_do_exist_that_expect_either_1_or_2_type_arguments_2743", "No overload expects {0} type arguments, but overloads do exist that expect either {1} or {2} type arguments."), + Type_parameter_defaults_can_only_reference_previously_declared_type_parameters: diag(2744, ts.DiagnosticCategory.Error, "Type_parameter_defaults_can_only_reference_previously_declared_type_parameters_2744", "Type parameter defaults can only reference previously declared type parameters."), + This_JSX_tag_s_0_prop_expects_type_1_which_requires_multiple_children_but_only_a_single_child_was_provided: diag(2745, ts.DiagnosticCategory.Error, "This_JSX_tag_s_0_prop_expects_type_1_which_requires_multiple_children_but_only_a_single_child_was_pr_2745", "This JSX tag's '{0}' prop expects type '{1}' which requires multiple children, but only a single child was provided."), + This_JSX_tag_s_0_prop_expects_a_single_child_of_type_1_but_multiple_children_were_provided: diag(2746, ts.DiagnosticCategory.Error, "This_JSX_tag_s_0_prop_expects_a_single_child_of_type_1_but_multiple_children_were_provided_2746", "This JSX tag's '{0}' prop expects a single child of type '{1}', but multiple children were provided."), + _0_components_don_t_accept_text_as_child_elements_Text_in_JSX_has_the_type_string_but_the_expected_type_of_1_is_2: diag(2747, ts.DiagnosticCategory.Error, "_0_components_don_t_accept_text_as_child_elements_Text_in_JSX_has_the_type_string_but_the_expected_t_2747", "'{0}' components don't accept text as child elements. Text in JSX has the type 'string', but the expected type of '{1}' is '{2}'."), + Cannot_access_ambient_const_enums_when_the_isolatedModules_flag_is_provided: diag(2748, ts.DiagnosticCategory.Error, "Cannot_access_ambient_const_enums_when_the_isolatedModules_flag_is_provided_2748", "Cannot access ambient const enums when the '--isolatedModules' flag is provided."), + _0_refers_to_a_value_but_is_being_used_as_a_type_here_Did_you_mean_typeof_0: diag(2749, ts.DiagnosticCategory.Error, "_0_refers_to_a_value_but_is_being_used_as_a_type_here_Did_you_mean_typeof_0_2749", "'{0}' refers to a value, but is being used as a type here. Did you mean 'typeof {0}'?"), + The_implementation_signature_is_declared_here: diag(2750, ts.DiagnosticCategory.Error, "The_implementation_signature_is_declared_here_2750", "The implementation signature is declared here."), + Circularity_originates_in_type_at_this_location: diag(2751, ts.DiagnosticCategory.Error, "Circularity_originates_in_type_at_this_location_2751", "Circularity originates in type at this location."), + The_first_export_default_is_here: diag(2752, ts.DiagnosticCategory.Error, "The_first_export_default_is_here_2752", "The first export default is here."), + Another_export_default_is_here: diag(2753, ts.DiagnosticCategory.Error, "Another_export_default_is_here_2753", "Another export default is here."), + super_may_not_use_type_arguments: diag(2754, ts.DiagnosticCategory.Error, "super_may_not_use_type_arguments_2754", "'super' may not use type arguments."), + No_constituent_of_type_0_is_callable: diag(2755, ts.DiagnosticCategory.Error, "No_constituent_of_type_0_is_callable_2755", "No constituent of type '{0}' is callable."), + Not_all_constituents_of_type_0_are_callable: diag(2756, ts.DiagnosticCategory.Error, "Not_all_constituents_of_type_0_are_callable_2756", "Not all constituents of type '{0}' are callable."), + Type_0_has_no_call_signatures: diag(2757, ts.DiagnosticCategory.Error, "Type_0_has_no_call_signatures_2757", "Type '{0}' has no call signatures."), + Each_member_of_the_union_type_0_has_signatures_but_none_of_those_signatures_are_compatible_with_each_other: diag(2758, ts.DiagnosticCategory.Error, "Each_member_of_the_union_type_0_has_signatures_but_none_of_those_signatures_are_compatible_with_each_2758", "Each member of the union type '{0}' has signatures, but none of those signatures are compatible with each other."), + No_constituent_of_type_0_is_constructable: diag(2759, ts.DiagnosticCategory.Error, "No_constituent_of_type_0_is_constructable_2759", "No constituent of type '{0}' is constructable."), + Not_all_constituents_of_type_0_are_constructable: diag(2760, ts.DiagnosticCategory.Error, "Not_all_constituents_of_type_0_are_constructable_2760", "Not all constituents of type '{0}' are constructable."), + Type_0_has_no_construct_signatures: diag(2761, ts.DiagnosticCategory.Error, "Type_0_has_no_construct_signatures_2761", "Type '{0}' has no construct signatures."), + Each_member_of_the_union_type_0_has_construct_signatures_but_none_of_those_signatures_are_compatible_with_each_other: diag(2762, ts.DiagnosticCategory.Error, "Each_member_of_the_union_type_0_has_construct_signatures_but_none_of_those_signatures_are_compatible_2762", "Each member of the union type '{0}' has construct signatures, but none of those signatures are compatible with each other."), + Cannot_iterate_value_because_the_next_method_of_its_iterator_expects_type_1_but_for_of_will_always_send_0: diag(2763, ts.DiagnosticCategory.Error, "Cannot_iterate_value_because_the_next_method_of_its_iterator_expects_type_1_but_for_of_will_always_s_2763", "Cannot iterate value because the 'next' method of its iterator expects type '{1}', but for-of will always send '{0}'."), + Cannot_iterate_value_because_the_next_method_of_its_iterator_expects_type_1_but_array_spread_will_always_send_0: diag(2764, ts.DiagnosticCategory.Error, "Cannot_iterate_value_because_the_next_method_of_its_iterator_expects_type_1_but_array_spread_will_al_2764", "Cannot iterate value because the 'next' method of its iterator expects type '{1}', but array spread will always send '{0}'."), + Cannot_iterate_value_because_the_next_method_of_its_iterator_expects_type_1_but_array_destructuring_will_always_send_0: diag(2765, ts.DiagnosticCategory.Error, "Cannot_iterate_value_because_the_next_method_of_its_iterator_expects_type_1_but_array_destructuring__2765", "Cannot iterate value because the 'next' method of its iterator expects type '{1}', but array destructuring will always send '{0}'."), + Cannot_delegate_iteration_to_value_because_the_next_method_of_its_iterator_expects_type_1_but_the_containing_generator_will_always_send_0: diag(2766, ts.DiagnosticCategory.Error, "Cannot_delegate_iteration_to_value_because_the_next_method_of_its_iterator_expects_type_1_but_the_co_2766", "Cannot delegate iteration to value because the 'next' method of its iterator expects type '{1}', but the containing generator will always send '{0}'."), + The_0_property_of_an_iterator_must_be_a_method: diag(2767, ts.DiagnosticCategory.Error, "The_0_property_of_an_iterator_must_be_a_method_2767", "The '{0}' property of an iterator must be a method."), + The_0_property_of_an_async_iterator_must_be_a_method: diag(2768, ts.DiagnosticCategory.Error, "The_0_property_of_an_async_iterator_must_be_a_method_2768", "The '{0}' property of an async iterator must be a method."), + No_overload_matches_this_call: diag(2769, ts.DiagnosticCategory.Error, "No_overload_matches_this_call_2769", "No overload matches this call."), + The_last_overload_gave_the_following_error: diag(2770, ts.DiagnosticCategory.Error, "The_last_overload_gave_the_following_error_2770", "The last overload gave the following error."), + The_last_overload_is_declared_here: diag(2771, ts.DiagnosticCategory.Error, "The_last_overload_is_declared_here_2771", "The last overload is declared here."), + Overload_0_of_1_2_gave_the_following_error: diag(2772, ts.DiagnosticCategory.Error, "Overload_0_of_1_2_gave_the_following_error_2772", "Overload {0} of {1}, '{2}', gave the following error."), + Did_you_forget_to_use_await: diag(2773, ts.DiagnosticCategory.Error, "Did_you_forget_to_use_await_2773", "Did you forget to use 'await'?"), + This_condition_will_always_return_true_since_the_function_is_always_defined_Did_you_mean_to_call_it_instead: diag(2774, ts.DiagnosticCategory.Error, "This_condition_will_always_return_true_since_the_function_is_always_defined_Did_you_mean_to_call_it__2774", "This condition will always return true since the function is always defined. Did you mean to call it instead?"), + Assertions_require_every_name_in_the_call_target_to_be_declared_with_an_explicit_type_annotation: diag(2775, ts.DiagnosticCategory.Error, "Assertions_require_every_name_in_the_call_target_to_be_declared_with_an_explicit_type_annotation_2775", "Assertions require every name in the call target to be declared with an explicit type annotation."), + Assertions_require_the_call_target_to_be_an_identifier_or_qualified_name: diag(2776, ts.DiagnosticCategory.Error, "Assertions_require_the_call_target_to_be_an_identifier_or_qualified_name_2776", "Assertions require the call target to be an identifier or qualified name."), + The_operand_of_an_increment_or_decrement_operator_may_not_be_an_optional_property_access: diag(2777, ts.DiagnosticCategory.Error, "The_operand_of_an_increment_or_decrement_operator_may_not_be_an_optional_property_access_2777", "The operand of an increment or decrement operator may not be an optional property access."), + The_target_of_an_object_rest_assignment_may_not_be_an_optional_property_access: diag(2778, ts.DiagnosticCategory.Error, "The_target_of_an_object_rest_assignment_may_not_be_an_optional_property_access_2778", "The target of an object rest assignment may not be an optional property access."), + The_left_hand_side_of_an_assignment_expression_may_not_be_an_optional_property_access: diag(2779, ts.DiagnosticCategory.Error, "The_left_hand_side_of_an_assignment_expression_may_not_be_an_optional_property_access_2779", "The left-hand side of an assignment expression may not be an optional property access."), + The_left_hand_side_of_a_for_in_statement_may_not_be_an_optional_property_access: diag(2780, ts.DiagnosticCategory.Error, "The_left_hand_side_of_a_for_in_statement_may_not_be_an_optional_property_access_2780", "The left-hand side of a 'for...in' statement may not be an optional property access."), + The_left_hand_side_of_a_for_of_statement_may_not_be_an_optional_property_access: diag(2781, ts.DiagnosticCategory.Error, "The_left_hand_side_of_a_for_of_statement_may_not_be_an_optional_property_access_2781", "The left-hand side of a 'for...of' statement may not be an optional property access."), + _0_needs_an_explicit_type_annotation: diag(2782, ts.DiagnosticCategory.Message, "_0_needs_an_explicit_type_annotation_2782", "'{0}' needs an explicit type annotation."), + _0_is_specified_more_than_once_so_this_usage_will_be_overwritten: diag(2783, ts.DiagnosticCategory.Error, "_0_is_specified_more_than_once_so_this_usage_will_be_overwritten_2783", "'{0}' is specified more than once, so this usage will be overwritten."), + get_and_set_accessors_cannot_declare_this_parameters: diag(2784, ts.DiagnosticCategory.Error, "get_and_set_accessors_cannot_declare_this_parameters_2784", "'get' and 'set' accessors cannot declare 'this' parameters."), + This_spread_always_overwrites_this_property: diag(2785, ts.DiagnosticCategory.Error, "This_spread_always_overwrites_this_property_2785", "This spread always overwrites this property."), + _0_cannot_be_used_as_a_JSX_component: diag(2786, ts.DiagnosticCategory.Error, "_0_cannot_be_used_as_a_JSX_component_2786", "'{0}' cannot be used as a JSX component."), + Its_return_type_0_is_not_a_valid_JSX_element: diag(2787, ts.DiagnosticCategory.Error, "Its_return_type_0_is_not_a_valid_JSX_element_2787", "Its return type '{0}' is not a valid JSX element."), + Its_instance_type_0_is_not_a_valid_JSX_element: diag(2788, ts.DiagnosticCategory.Error, "Its_instance_type_0_is_not_a_valid_JSX_element_2788", "Its instance type '{0}' is not a valid JSX element."), + Its_element_type_0_is_not_a_valid_JSX_element: diag(2789, ts.DiagnosticCategory.Error, "Its_element_type_0_is_not_a_valid_JSX_element_2789", "Its element type '{0}' is not a valid JSX element."), + Import_declaration_0_is_using_private_name_1: diag(4000, ts.DiagnosticCategory.Error, "Import_declaration_0_is_using_private_name_1_4000", "Import declaration '{0}' is using private name '{1}'."), + Type_parameter_0_of_exported_class_has_or_is_using_private_name_1: diag(4002, ts.DiagnosticCategory.Error, "Type_parameter_0_of_exported_class_has_or_is_using_private_name_1_4002", "Type parameter '{0}' of exported class has or is using private name '{1}'."), + Type_parameter_0_of_exported_interface_has_or_is_using_private_name_1: diag(4004, ts.DiagnosticCategory.Error, "Type_parameter_0_of_exported_interface_has_or_is_using_private_name_1_4004", "Type parameter '{0}' of exported interface has or is using private name '{1}'."), + Type_parameter_0_of_constructor_signature_from_exported_interface_has_or_is_using_private_name_1: diag(4006, ts.DiagnosticCategory.Error, "Type_parameter_0_of_constructor_signature_from_exported_interface_has_or_is_using_private_name_1_4006", "Type parameter '{0}' of constructor signature from exported interface has or is using private name '{1}'."), + Type_parameter_0_of_call_signature_from_exported_interface_has_or_is_using_private_name_1: diag(4008, ts.DiagnosticCategory.Error, "Type_parameter_0_of_call_signature_from_exported_interface_has_or_is_using_private_name_1_4008", "Type parameter '{0}' of call signature from exported interface has or is using private name '{1}'."), + Type_parameter_0_of_public_static_method_from_exported_class_has_or_is_using_private_name_1: diag(4010, ts.DiagnosticCategory.Error, "Type_parameter_0_of_public_static_method_from_exported_class_has_or_is_using_private_name_1_4010", "Type parameter '{0}' of public static method from exported class has or is using private name '{1}'."), + Type_parameter_0_of_public_method_from_exported_class_has_or_is_using_private_name_1: diag(4012, ts.DiagnosticCategory.Error, "Type_parameter_0_of_public_method_from_exported_class_has_or_is_using_private_name_1_4012", "Type parameter '{0}' of public method from exported class has or is using private name '{1}'."), + Type_parameter_0_of_method_from_exported_interface_has_or_is_using_private_name_1: diag(4014, ts.DiagnosticCategory.Error, "Type_parameter_0_of_method_from_exported_interface_has_or_is_using_private_name_1_4014", "Type parameter '{0}' of method from exported interface has or is using private name '{1}'."), + Type_parameter_0_of_exported_function_has_or_is_using_private_name_1: diag(4016, ts.DiagnosticCategory.Error, "Type_parameter_0_of_exported_function_has_or_is_using_private_name_1_4016", "Type parameter '{0}' of exported function has or is using private name '{1}'."), + Implements_clause_of_exported_class_0_has_or_is_using_private_name_1: diag(4019, ts.DiagnosticCategory.Error, "Implements_clause_of_exported_class_0_has_or_is_using_private_name_1_4019", "Implements clause of exported class '{0}' has or is using private name '{1}'."), + extends_clause_of_exported_class_0_has_or_is_using_private_name_1: diag(4020, ts.DiagnosticCategory.Error, "extends_clause_of_exported_class_0_has_or_is_using_private_name_1_4020", "'extends' clause of exported class '{0}' has or is using private name '{1}'."), + extends_clause_of_exported_interface_0_has_or_is_using_private_name_1: diag(4022, ts.DiagnosticCategory.Error, "extends_clause_of_exported_interface_0_has_or_is_using_private_name_1_4022", "'extends' clause of exported interface '{0}' has or is using private name '{1}'."), + Exported_variable_0_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named: diag(4023, ts.DiagnosticCategory.Error, "Exported_variable_0_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named_4023", "Exported variable '{0}' has or is using name '{1}' from external module {2} but cannot be named."), + Exported_variable_0_has_or_is_using_name_1_from_private_module_2: diag(4024, ts.DiagnosticCategory.Error, "Exported_variable_0_has_or_is_using_name_1_from_private_module_2_4024", "Exported variable '{0}' has or is using name '{1}' from private module '{2}'."), + Exported_variable_0_has_or_is_using_private_name_1: diag(4025, ts.DiagnosticCategory.Error, "Exported_variable_0_has_or_is_using_private_name_1_4025", "Exported variable '{0}' has or is using private name '{1}'."), + Public_static_property_0_of_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named: diag(4026, ts.DiagnosticCategory.Error, "Public_static_property_0_of_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot__4026", "Public static property '{0}' of exported class has or is using name '{1}' from external module {2} but cannot be named."), + Public_static_property_0_of_exported_class_has_or_is_using_name_1_from_private_module_2: diag(4027, ts.DiagnosticCategory.Error, "Public_static_property_0_of_exported_class_has_or_is_using_name_1_from_private_module_2_4027", "Public static property '{0}' of exported class has or is using name '{1}' from private module '{2}'."), + Public_static_property_0_of_exported_class_has_or_is_using_private_name_1: diag(4028, ts.DiagnosticCategory.Error, "Public_static_property_0_of_exported_class_has_or_is_using_private_name_1_4028", "Public static property '{0}' of exported class has or is using private name '{1}'."), + Public_property_0_of_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named: diag(4029, ts.DiagnosticCategory.Error, "Public_property_0_of_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_name_4029", "Public property '{0}' of exported class has or is using name '{1}' from external module {2} but cannot be named."), + Public_property_0_of_exported_class_has_or_is_using_name_1_from_private_module_2: diag(4030, ts.DiagnosticCategory.Error, "Public_property_0_of_exported_class_has_or_is_using_name_1_from_private_module_2_4030", "Public property '{0}' of exported class has or is using name '{1}' from private module '{2}'."), + Public_property_0_of_exported_class_has_or_is_using_private_name_1: diag(4031, ts.DiagnosticCategory.Error, "Public_property_0_of_exported_class_has_or_is_using_private_name_1_4031", "Public property '{0}' of exported class has or is using private name '{1}'."), + Property_0_of_exported_interface_has_or_is_using_name_1_from_private_module_2: diag(4032, ts.DiagnosticCategory.Error, "Property_0_of_exported_interface_has_or_is_using_name_1_from_private_module_2_4032", "Property '{0}' of exported interface has or is using name '{1}' from private module '{2}'."), + Property_0_of_exported_interface_has_or_is_using_private_name_1: diag(4033, ts.DiagnosticCategory.Error, "Property_0_of_exported_interface_has_or_is_using_private_name_1_4033", "Property '{0}' of exported interface has or is using private name '{1}'."), + Parameter_type_of_public_static_setter_0_from_exported_class_has_or_is_using_name_1_from_private_module_2: diag(4034, ts.DiagnosticCategory.Error, "Parameter_type_of_public_static_setter_0_from_exported_class_has_or_is_using_name_1_from_private_mod_4034", "Parameter type of public static setter '{0}' from exported class has or is using name '{1}' from private module '{2}'."), + Parameter_type_of_public_static_setter_0_from_exported_class_has_or_is_using_private_name_1: diag(4035, ts.DiagnosticCategory.Error, "Parameter_type_of_public_static_setter_0_from_exported_class_has_or_is_using_private_name_1_4035", "Parameter type of public static setter '{0}' from exported class has or is using private name '{1}'."), + Parameter_type_of_public_setter_0_from_exported_class_has_or_is_using_name_1_from_private_module_2: diag(4036, ts.DiagnosticCategory.Error, "Parameter_type_of_public_setter_0_from_exported_class_has_or_is_using_name_1_from_private_module_2_4036", "Parameter type of public setter '{0}' from exported class has or is using name '{1}' from private module '{2}'."), + Parameter_type_of_public_setter_0_from_exported_class_has_or_is_using_private_name_1: diag(4037, ts.DiagnosticCategory.Error, "Parameter_type_of_public_setter_0_from_exported_class_has_or_is_using_private_name_1_4037", "Parameter type of public setter '{0}' from exported class has or is using private name '{1}'."), + Return_type_of_public_static_getter_0_from_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named: diag(4038, ts.DiagnosticCategory.Error, "Return_type_of_public_static_getter_0_from_exported_class_has_or_is_using_name_1_from_external_modul_4038", "Return type of public static getter '{0}' from exported class has or is using name '{1}' from external module {2} but cannot be named."), + Return_type_of_public_static_getter_0_from_exported_class_has_or_is_using_name_1_from_private_module_2: diag(4039, ts.DiagnosticCategory.Error, "Return_type_of_public_static_getter_0_from_exported_class_has_or_is_using_name_1_from_private_module_4039", "Return type of public static getter '{0}' from exported class has or is using name '{1}' from private module '{2}'."), + Return_type_of_public_static_getter_0_from_exported_class_has_or_is_using_private_name_1: diag(4040, ts.DiagnosticCategory.Error, "Return_type_of_public_static_getter_0_from_exported_class_has_or_is_using_private_name_1_4040", "Return type of public static getter '{0}' from exported class has or is using private name '{1}'."), + Return_type_of_public_getter_0_from_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named: diag(4041, ts.DiagnosticCategory.Error, "Return_type_of_public_getter_0_from_exported_class_has_or_is_using_name_1_from_external_module_2_but_4041", "Return type of public getter '{0}' from exported class has or is using name '{1}' from external module {2} but cannot be named."), + Return_type_of_public_getter_0_from_exported_class_has_or_is_using_name_1_from_private_module_2: diag(4042, ts.DiagnosticCategory.Error, "Return_type_of_public_getter_0_from_exported_class_has_or_is_using_name_1_from_private_module_2_4042", "Return type of public getter '{0}' from exported class has or is using name '{1}' from private module '{2}'."), + Return_type_of_public_getter_0_from_exported_class_has_or_is_using_private_name_1: diag(4043, ts.DiagnosticCategory.Error, "Return_type_of_public_getter_0_from_exported_class_has_or_is_using_private_name_1_4043", "Return type of public getter '{0}' from exported class has or is using private name '{1}'."), + Return_type_of_constructor_signature_from_exported_interface_has_or_is_using_name_0_from_private_module_1: diag(4044, ts.DiagnosticCategory.Error, "Return_type_of_constructor_signature_from_exported_interface_has_or_is_using_name_0_from_private_mod_4044", "Return type of constructor signature from exported interface has or is using name '{0}' from private module '{1}'."), + Return_type_of_constructor_signature_from_exported_interface_has_or_is_using_private_name_0: diag(4045, ts.DiagnosticCategory.Error, "Return_type_of_constructor_signature_from_exported_interface_has_or_is_using_private_name_0_4045", "Return type of constructor signature from exported interface has or is using private name '{0}'."), + Return_type_of_call_signature_from_exported_interface_has_or_is_using_name_0_from_private_module_1: diag(4046, ts.DiagnosticCategory.Error, "Return_type_of_call_signature_from_exported_interface_has_or_is_using_name_0_from_private_module_1_4046", "Return type of call signature from exported interface has or is using name '{0}' from private module '{1}'."), + Return_type_of_call_signature_from_exported_interface_has_or_is_using_private_name_0: diag(4047, ts.DiagnosticCategory.Error, "Return_type_of_call_signature_from_exported_interface_has_or_is_using_private_name_0_4047", "Return type of call signature from exported interface has or is using private name '{0}'."), + Return_type_of_index_signature_from_exported_interface_has_or_is_using_name_0_from_private_module_1: diag(4048, ts.DiagnosticCategory.Error, "Return_type_of_index_signature_from_exported_interface_has_or_is_using_name_0_from_private_module_1_4048", "Return type of index signature from exported interface has or is using name '{0}' from private module '{1}'."), + Return_type_of_index_signature_from_exported_interface_has_or_is_using_private_name_0: diag(4049, ts.DiagnosticCategory.Error, "Return_type_of_index_signature_from_exported_interface_has_or_is_using_private_name_0_4049", "Return type of index signature from exported interface has or is using private name '{0}'."), + Return_type_of_public_static_method_from_exported_class_has_or_is_using_name_0_from_external_module_1_but_cannot_be_named: diag(4050, ts.DiagnosticCategory.Error, "Return_type_of_public_static_method_from_exported_class_has_or_is_using_name_0_from_external_module__4050", "Return type of public static method from exported class has or is using name '{0}' from external module {1} but cannot be named."), + Return_type_of_public_static_method_from_exported_class_has_or_is_using_name_0_from_private_module_1: diag(4051, ts.DiagnosticCategory.Error, "Return_type_of_public_static_method_from_exported_class_has_or_is_using_name_0_from_private_module_1_4051", "Return type of public static method from exported class has or is using name '{0}' from private module '{1}'."), + Return_type_of_public_static_method_from_exported_class_has_or_is_using_private_name_0: diag(4052, ts.DiagnosticCategory.Error, "Return_type_of_public_static_method_from_exported_class_has_or_is_using_private_name_0_4052", "Return type of public static method from exported class has or is using private name '{0}'."), + Return_type_of_public_method_from_exported_class_has_or_is_using_name_0_from_external_module_1_but_cannot_be_named: diag(4053, ts.DiagnosticCategory.Error, "Return_type_of_public_method_from_exported_class_has_or_is_using_name_0_from_external_module_1_but_c_4053", "Return type of public method from exported class has or is using name '{0}' from external module {1} but cannot be named."), + Return_type_of_public_method_from_exported_class_has_or_is_using_name_0_from_private_module_1: diag(4054, ts.DiagnosticCategory.Error, "Return_type_of_public_method_from_exported_class_has_or_is_using_name_0_from_private_module_1_4054", "Return type of public method from exported class has or is using name '{0}' from private module '{1}'."), + Return_type_of_public_method_from_exported_class_has_or_is_using_private_name_0: diag(4055, ts.DiagnosticCategory.Error, "Return_type_of_public_method_from_exported_class_has_or_is_using_private_name_0_4055", "Return type of public method from exported class has or is using private name '{0}'."), + Return_type_of_method_from_exported_interface_has_or_is_using_name_0_from_private_module_1: diag(4056, ts.DiagnosticCategory.Error, "Return_type_of_method_from_exported_interface_has_or_is_using_name_0_from_private_module_1_4056", "Return type of method from exported interface has or is using name '{0}' from private module '{1}'."), + Return_type_of_method_from_exported_interface_has_or_is_using_private_name_0: diag(4057, ts.DiagnosticCategory.Error, "Return_type_of_method_from_exported_interface_has_or_is_using_private_name_0_4057", "Return type of method from exported interface has or is using private name '{0}'."), + Return_type_of_exported_function_has_or_is_using_name_0_from_external_module_1_but_cannot_be_named: diag(4058, ts.DiagnosticCategory.Error, "Return_type_of_exported_function_has_or_is_using_name_0_from_external_module_1_but_cannot_be_named_4058", "Return type of exported function has or is using name '{0}' from external module {1} but cannot be named."), + Return_type_of_exported_function_has_or_is_using_name_0_from_private_module_1: diag(4059, ts.DiagnosticCategory.Error, "Return_type_of_exported_function_has_or_is_using_name_0_from_private_module_1_4059", "Return type of exported function has or is using name '{0}' from private module '{1}'."), + Return_type_of_exported_function_has_or_is_using_private_name_0: diag(4060, ts.DiagnosticCategory.Error, "Return_type_of_exported_function_has_or_is_using_private_name_0_4060", "Return type of exported function has or is using private name '{0}'."), + Parameter_0_of_constructor_from_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named: diag(4061, ts.DiagnosticCategory.Error, "Parameter_0_of_constructor_from_exported_class_has_or_is_using_name_1_from_external_module_2_but_can_4061", "Parameter '{0}' of constructor from exported class has or is using name '{1}' from external module {2} but cannot be named."), + Parameter_0_of_constructor_from_exported_class_has_or_is_using_name_1_from_private_module_2: diag(4062, ts.DiagnosticCategory.Error, "Parameter_0_of_constructor_from_exported_class_has_or_is_using_name_1_from_private_module_2_4062", "Parameter '{0}' of constructor from exported class has or is using name '{1}' from private module '{2}'."), + Parameter_0_of_constructor_from_exported_class_has_or_is_using_private_name_1: diag(4063, ts.DiagnosticCategory.Error, "Parameter_0_of_constructor_from_exported_class_has_or_is_using_private_name_1_4063", "Parameter '{0}' of constructor from exported class has or is using private name '{1}'."), + Parameter_0_of_constructor_signature_from_exported_interface_has_or_is_using_name_1_from_private_module_2: diag(4064, ts.DiagnosticCategory.Error, "Parameter_0_of_constructor_signature_from_exported_interface_has_or_is_using_name_1_from_private_mod_4064", "Parameter '{0}' of constructor signature from exported interface has or is using name '{1}' from private module '{2}'."), + Parameter_0_of_constructor_signature_from_exported_interface_has_or_is_using_private_name_1: diag(4065, ts.DiagnosticCategory.Error, "Parameter_0_of_constructor_signature_from_exported_interface_has_or_is_using_private_name_1_4065", "Parameter '{0}' of constructor signature from exported interface has or is using private name '{1}'."), + Parameter_0_of_call_signature_from_exported_interface_has_or_is_using_name_1_from_private_module_2: diag(4066, ts.DiagnosticCategory.Error, "Parameter_0_of_call_signature_from_exported_interface_has_or_is_using_name_1_from_private_module_2_4066", "Parameter '{0}' of call signature from exported interface has or is using name '{1}' from private module '{2}'."), + Parameter_0_of_call_signature_from_exported_interface_has_or_is_using_private_name_1: diag(4067, ts.DiagnosticCategory.Error, "Parameter_0_of_call_signature_from_exported_interface_has_or_is_using_private_name_1_4067", "Parameter '{0}' of call signature from exported interface has or is using private name '{1}'."), + Parameter_0_of_public_static_method_from_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named: diag(4068, ts.DiagnosticCategory.Error, "Parameter_0_of_public_static_method_from_exported_class_has_or_is_using_name_1_from_external_module__4068", "Parameter '{0}' of public static method from exported class has or is using name '{1}' from external module {2} but cannot be named."), + Parameter_0_of_public_static_method_from_exported_class_has_or_is_using_name_1_from_private_module_2: diag(4069, ts.DiagnosticCategory.Error, "Parameter_0_of_public_static_method_from_exported_class_has_or_is_using_name_1_from_private_module_2_4069", "Parameter '{0}' of public static method from exported class has or is using name '{1}' from private module '{2}'."), + Parameter_0_of_public_static_method_from_exported_class_has_or_is_using_private_name_1: diag(4070, ts.DiagnosticCategory.Error, "Parameter_0_of_public_static_method_from_exported_class_has_or_is_using_private_name_1_4070", "Parameter '{0}' of public static method from exported class has or is using private name '{1}'."), + Parameter_0_of_public_method_from_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named: diag(4071, ts.DiagnosticCategory.Error, "Parameter_0_of_public_method_from_exported_class_has_or_is_using_name_1_from_external_module_2_but_c_4071", "Parameter '{0}' of public method from exported class has or is using name '{1}' from external module {2} but cannot be named."), + Parameter_0_of_public_method_from_exported_class_has_or_is_using_name_1_from_private_module_2: diag(4072, ts.DiagnosticCategory.Error, "Parameter_0_of_public_method_from_exported_class_has_or_is_using_name_1_from_private_module_2_4072", "Parameter '{0}' of public method from exported class has or is using name '{1}' from private module '{2}'."), + Parameter_0_of_public_method_from_exported_class_has_or_is_using_private_name_1: diag(4073, ts.DiagnosticCategory.Error, "Parameter_0_of_public_method_from_exported_class_has_or_is_using_private_name_1_4073", "Parameter '{0}' of public method from exported class has or is using private name '{1}'."), + Parameter_0_of_method_from_exported_interface_has_or_is_using_name_1_from_private_module_2: diag(4074, ts.DiagnosticCategory.Error, "Parameter_0_of_method_from_exported_interface_has_or_is_using_name_1_from_private_module_2_4074", "Parameter '{0}' of method from exported interface has or is using name '{1}' from private module '{2}'."), + Parameter_0_of_method_from_exported_interface_has_or_is_using_private_name_1: diag(4075, ts.DiagnosticCategory.Error, "Parameter_0_of_method_from_exported_interface_has_or_is_using_private_name_1_4075", "Parameter '{0}' of method from exported interface has or is using private name '{1}'."), + Parameter_0_of_exported_function_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named: diag(4076, ts.DiagnosticCategory.Error, "Parameter_0_of_exported_function_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named_4076", "Parameter '{0}' of exported function has or is using name '{1}' from external module {2} but cannot be named."), + Parameter_0_of_exported_function_has_or_is_using_name_1_from_private_module_2: diag(4077, ts.DiagnosticCategory.Error, "Parameter_0_of_exported_function_has_or_is_using_name_1_from_private_module_2_4077", "Parameter '{0}' of exported function has or is using name '{1}' from private module '{2}'."), + Parameter_0_of_exported_function_has_or_is_using_private_name_1: diag(4078, ts.DiagnosticCategory.Error, "Parameter_0_of_exported_function_has_or_is_using_private_name_1_4078", "Parameter '{0}' of exported function has or is using private name '{1}'."), + Exported_type_alias_0_has_or_is_using_private_name_1: diag(4081, ts.DiagnosticCategory.Error, "Exported_type_alias_0_has_or_is_using_private_name_1_4081", "Exported type alias '{0}' has or is using private name '{1}'."), + Default_export_of_the_module_has_or_is_using_private_name_0: diag(4082, ts.DiagnosticCategory.Error, "Default_export_of_the_module_has_or_is_using_private_name_0_4082", "Default export of the module has or is using private name '{0}'."), + Type_parameter_0_of_exported_type_alias_has_or_is_using_private_name_1: diag(4083, ts.DiagnosticCategory.Error, "Type_parameter_0_of_exported_type_alias_has_or_is_using_private_name_1_4083", "Type parameter '{0}' of exported type alias has or is using private name '{1}'."), + Conflicting_definitions_for_0_found_at_1_and_2_Consider_installing_a_specific_version_of_this_library_to_resolve_the_conflict: diag(4090, ts.DiagnosticCategory.Error, "Conflicting_definitions_for_0_found_at_1_and_2_Consider_installing_a_specific_version_of_this_librar_4090", "Conflicting definitions for '{0}' found at '{1}' and '{2}'. Consider installing a specific version of this library to resolve the conflict."), + Parameter_0_of_index_signature_from_exported_interface_has_or_is_using_name_1_from_private_module_2: diag(4091, ts.DiagnosticCategory.Error, "Parameter_0_of_index_signature_from_exported_interface_has_or_is_using_name_1_from_private_module_2_4091", "Parameter '{0}' of index signature from exported interface has or is using name '{1}' from private module '{2}'."), + Parameter_0_of_index_signature_from_exported_interface_has_or_is_using_private_name_1: diag(4092, ts.DiagnosticCategory.Error, "Parameter_0_of_index_signature_from_exported_interface_has_or_is_using_private_name_1_4092", "Parameter '{0}' of index signature from exported interface has or is using private name '{1}'."), + Property_0_of_exported_class_expression_may_not_be_private_or_protected: diag(4094, ts.DiagnosticCategory.Error, "Property_0_of_exported_class_expression_may_not_be_private_or_protected_4094", "Property '{0}' of exported class expression may not be private or protected."), + Public_static_method_0_of_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named: diag(4095, ts.DiagnosticCategory.Error, "Public_static_method_0_of_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_4095", "Public static method '{0}' of exported class has or is using name '{1}' from external module {2} but cannot be named."), + Public_static_method_0_of_exported_class_has_or_is_using_name_1_from_private_module_2: diag(4096, ts.DiagnosticCategory.Error, "Public_static_method_0_of_exported_class_has_or_is_using_name_1_from_private_module_2_4096", "Public static method '{0}' of exported class has or is using name '{1}' from private module '{2}'."), + Public_static_method_0_of_exported_class_has_or_is_using_private_name_1: diag(4097, ts.DiagnosticCategory.Error, "Public_static_method_0_of_exported_class_has_or_is_using_private_name_1_4097", "Public static method '{0}' of exported class has or is using private name '{1}'."), + Public_method_0_of_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named: diag(4098, ts.DiagnosticCategory.Error, "Public_method_0_of_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named_4098", "Public method '{0}' of exported class has or is using name '{1}' from external module {2} but cannot be named."), + Public_method_0_of_exported_class_has_or_is_using_name_1_from_private_module_2: diag(4099, ts.DiagnosticCategory.Error, "Public_method_0_of_exported_class_has_or_is_using_name_1_from_private_module_2_4099", "Public method '{0}' of exported class has or is using name '{1}' from private module '{2}'."), + Public_method_0_of_exported_class_has_or_is_using_private_name_1: diag(4100, ts.DiagnosticCategory.Error, "Public_method_0_of_exported_class_has_or_is_using_private_name_1_4100", "Public method '{0}' of exported class has or is using private name '{1}'."), + Method_0_of_exported_interface_has_or_is_using_name_1_from_private_module_2: diag(4101, ts.DiagnosticCategory.Error, "Method_0_of_exported_interface_has_or_is_using_name_1_from_private_module_2_4101", "Method '{0}' of exported interface has or is using name '{1}' from private module '{2}'."), + Method_0_of_exported_interface_has_or_is_using_private_name_1: diag(4102, ts.DiagnosticCategory.Error, "Method_0_of_exported_interface_has_or_is_using_private_name_1_4102", "Method '{0}' of exported interface has or is using private name '{1}'."), + Type_parameter_0_of_exported_mapped_object_type_is_using_private_name_1: diag(4103, ts.DiagnosticCategory.Error, "Type_parameter_0_of_exported_mapped_object_type_is_using_private_name_1_4103", "Type parameter '{0}' of exported mapped object type is using private name '{1}'."), + The_type_0_is_readonly_and_cannot_be_assigned_to_the_mutable_type_1: diag(4104, ts.DiagnosticCategory.Error, "The_type_0_is_readonly_and_cannot_be_assigned_to_the_mutable_type_1_4104", "The type '{0}' is 'readonly' and cannot be assigned to the mutable type '{1}'."), + Private_or_protected_member_0_cannot_be_accessed_on_a_type_parameter: diag(4105, ts.DiagnosticCategory.Error, "Private_or_protected_member_0_cannot_be_accessed_on_a_type_parameter_4105", "Private or protected member '{0}' cannot be accessed on a type parameter."), + Parameter_0_of_accessor_has_or_is_using_private_name_1: diag(4106, ts.DiagnosticCategory.Error, "Parameter_0_of_accessor_has_or_is_using_private_name_1_4106", "Parameter '{0}' of accessor has or is using private name '{1}'."), + Parameter_0_of_accessor_has_or_is_using_name_1_from_private_module_2: diag(4107, ts.DiagnosticCategory.Error, "Parameter_0_of_accessor_has_or_is_using_name_1_from_private_module_2_4107", "Parameter '{0}' of accessor has or is using name '{1}' from private module '{2}'."), + Parameter_0_of_accessor_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named: diag(4108, ts.DiagnosticCategory.Error, "Parameter_0_of_accessor_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named_4108", "Parameter '{0}' of accessor has or is using name '{1}' from external module '{2}' but cannot be named."), + Type_arguments_for_0_circularly_reference_themselves: diag(4109, ts.DiagnosticCategory.Error, "Type_arguments_for_0_circularly_reference_themselves_4109", "Type arguments for '{0}' circularly reference themselves."), + Tuple_type_arguments_circularly_reference_themselves: diag(4110, ts.DiagnosticCategory.Error, "Tuple_type_arguments_circularly_reference_themselves_4110", "Tuple type arguments circularly reference themselves."), + The_current_host_does_not_support_the_0_option: diag(5001, ts.DiagnosticCategory.Error, "The_current_host_does_not_support_the_0_option_5001", "The current host does not support the '{0}' option."), + Cannot_find_the_common_subdirectory_path_for_the_input_files: diag(5009, ts.DiagnosticCategory.Error, "Cannot_find_the_common_subdirectory_path_for_the_input_files_5009", "Cannot find the common subdirectory path for the input files."), + File_specification_cannot_end_in_a_recursive_directory_wildcard_Asterisk_Asterisk_Colon_0: diag(5010, ts.DiagnosticCategory.Error, "File_specification_cannot_end_in_a_recursive_directory_wildcard_Asterisk_Asterisk_Colon_0_5010", "File specification cannot end in a recursive directory wildcard ('**'): '{0}'."), + Cannot_read_file_0_Colon_1: diag(5012, ts.DiagnosticCategory.Error, "Cannot_read_file_0_Colon_1_5012", "Cannot read file '{0}': {1}."), + Failed_to_parse_file_0_Colon_1: diag(5014, ts.DiagnosticCategory.Error, "Failed_to_parse_file_0_Colon_1_5014", "Failed to parse file '{0}': {1}."), + Unknown_compiler_option_0: diag(5023, ts.DiagnosticCategory.Error, "Unknown_compiler_option_0_5023", "Unknown compiler option '{0}'."), + Compiler_option_0_requires_a_value_of_type_1: diag(5024, ts.DiagnosticCategory.Error, "Compiler_option_0_requires_a_value_of_type_1_5024", "Compiler option '{0}' requires a value of type {1}."), + Unknown_compiler_option_0_Did_you_mean_1: diag(5025, ts.DiagnosticCategory.Error, "Unknown_compiler_option_0_Did_you_mean_1_5025", "Unknown compiler option '{0}'. Did you mean '{1}'?"), + Could_not_write_file_0_Colon_1: diag(5033, ts.DiagnosticCategory.Error, "Could_not_write_file_0_Colon_1_5033", "Could not write file '{0}': {1}."), + Option_project_cannot_be_mixed_with_source_files_on_a_command_line: diag(5042, ts.DiagnosticCategory.Error, "Option_project_cannot_be_mixed_with_source_files_on_a_command_line_5042", "Option 'project' cannot be mixed with source files on a command line."), + Option_isolatedModules_can_only_be_used_when_either_option_module_is_provided_or_option_target_is_ES2015_or_higher: diag(5047, ts.DiagnosticCategory.Error, "Option_isolatedModules_can_only_be_used_when_either_option_module_is_provided_or_option_target_is_ES_5047", "Option 'isolatedModules' can only be used when either option '--module' is provided or option 'target' is 'ES2015' or higher."), + Option_0_cannot_be_specified_when_option_target_is_ES3: diag(5048, ts.DiagnosticCategory.Error, "Option_0_cannot_be_specified_when_option_target_is_ES3_5048", "Option '{0}' cannot be specified when option 'target' is 'ES3'."), + Option_0_can_only_be_used_when_either_option_inlineSourceMap_or_option_sourceMap_is_provided: diag(5051, ts.DiagnosticCategory.Error, "Option_0_can_only_be_used_when_either_option_inlineSourceMap_or_option_sourceMap_is_provided_5051", "Option '{0} can only be used when either option '--inlineSourceMap' or option '--sourceMap' is provided."), + Option_0_cannot_be_specified_without_specifying_option_1: diag(5052, ts.DiagnosticCategory.Error, "Option_0_cannot_be_specified_without_specifying_option_1_5052", "Option '{0}' cannot be specified without specifying option '{1}'."), + Option_0_cannot_be_specified_with_option_1: diag(5053, ts.DiagnosticCategory.Error, "Option_0_cannot_be_specified_with_option_1_5053", "Option '{0}' cannot be specified with option '{1}'."), + A_tsconfig_json_file_is_already_defined_at_Colon_0: diag(5054, ts.DiagnosticCategory.Error, "A_tsconfig_json_file_is_already_defined_at_Colon_0_5054", "A 'tsconfig.json' file is already defined at: '{0}'."), + Cannot_write_file_0_because_it_would_overwrite_input_file: diag(5055, ts.DiagnosticCategory.Error, "Cannot_write_file_0_because_it_would_overwrite_input_file_5055", "Cannot write file '{0}' because it would overwrite input file."), + Cannot_write_file_0_because_it_would_be_overwritten_by_multiple_input_files: diag(5056, ts.DiagnosticCategory.Error, "Cannot_write_file_0_because_it_would_be_overwritten_by_multiple_input_files_5056", "Cannot write file '{0}' because it would be overwritten by multiple input files."), + Cannot_find_a_tsconfig_json_file_at_the_specified_directory_Colon_0: diag(5057, ts.DiagnosticCategory.Error, "Cannot_find_a_tsconfig_json_file_at_the_specified_directory_Colon_0_5057", "Cannot find a tsconfig.json file at the specified directory: '{0}'."), + The_specified_path_does_not_exist_Colon_0: diag(5058, ts.DiagnosticCategory.Error, "The_specified_path_does_not_exist_Colon_0_5058", "The specified path does not exist: '{0}'."), + Invalid_value_for_reactNamespace_0_is_not_a_valid_identifier: diag(5059, ts.DiagnosticCategory.Error, "Invalid_value_for_reactNamespace_0_is_not_a_valid_identifier_5059", "Invalid value for '--reactNamespace'. '{0}' is not a valid identifier."), + Option_paths_cannot_be_used_without_specifying_baseUrl_option: diag(5060, ts.DiagnosticCategory.Error, "Option_paths_cannot_be_used_without_specifying_baseUrl_option_5060", "Option 'paths' cannot be used without specifying '--baseUrl' option."), + Pattern_0_can_have_at_most_one_Asterisk_character: diag(5061, ts.DiagnosticCategory.Error, "Pattern_0_can_have_at_most_one_Asterisk_character_5061", "Pattern '{0}' can have at most one '*' character."), + Substitution_0_in_pattern_1_can_have_at_most_one_Asterisk_character: diag(5062, ts.DiagnosticCategory.Error, "Substitution_0_in_pattern_1_can_have_at_most_one_Asterisk_character_5062", "Substitution '{0}' in pattern '{1}' can have at most one '*' character."), + Substitutions_for_pattern_0_should_be_an_array: diag(5063, ts.DiagnosticCategory.Error, "Substitutions_for_pattern_0_should_be_an_array_5063", "Substitutions for pattern '{0}' should be an array."), + Substitution_0_for_pattern_1_has_incorrect_type_expected_string_got_2: diag(5064, ts.DiagnosticCategory.Error, "Substitution_0_for_pattern_1_has_incorrect_type_expected_string_got_2_5064", "Substitution '{0}' for pattern '{1}' has incorrect type, expected 'string', got '{2}'."), + File_specification_cannot_contain_a_parent_directory_that_appears_after_a_recursive_directory_wildcard_Asterisk_Asterisk_Colon_0: diag(5065, ts.DiagnosticCategory.Error, "File_specification_cannot_contain_a_parent_directory_that_appears_after_a_recursive_directory_wildca_5065", "File specification cannot contain a parent directory ('..') that appears after a recursive directory wildcard ('**'): '{0}'."), + Substitutions_for_pattern_0_shouldn_t_be_an_empty_array: diag(5066, ts.DiagnosticCategory.Error, "Substitutions_for_pattern_0_shouldn_t_be_an_empty_array_5066", "Substitutions for pattern '{0}' shouldn't be an empty array."), + Invalid_value_for_jsxFactory_0_is_not_a_valid_identifier_or_qualified_name: diag(5067, ts.DiagnosticCategory.Error, "Invalid_value_for_jsxFactory_0_is_not_a_valid_identifier_or_qualified_name_5067", "Invalid value for 'jsxFactory'. '{0}' is not a valid identifier or qualified-name."), + Adding_a_tsconfig_json_file_will_help_organize_projects_that_contain_both_TypeScript_and_JavaScript_files_Learn_more_at_https_Colon_Slash_Slashaka_ms_Slashtsconfig: diag(5068, ts.DiagnosticCategory.Error, "Adding_a_tsconfig_json_file_will_help_organize_projects_that_contain_both_TypeScript_and_JavaScript__5068", "Adding a tsconfig.json file will help organize projects that contain both TypeScript and JavaScript files. Learn more at https://aka.ms/tsconfig."), + Option_0_cannot_be_specified_without_specifying_option_1_or_option_2: diag(5069, ts.DiagnosticCategory.Error, "Option_0_cannot_be_specified_without_specifying_option_1_or_option_2_5069", "Option '{0}' cannot be specified without specifying option '{1}' or option '{2}'."), + Option_resolveJsonModule_cannot_be_specified_without_node_module_resolution_strategy: diag(5070, ts.DiagnosticCategory.Error, "Option_resolveJsonModule_cannot_be_specified_without_node_module_resolution_strategy_5070", "Option '--resolveJsonModule' cannot be specified without 'node' module resolution strategy."), + Option_resolveJsonModule_can_only_be_specified_when_module_code_generation_is_commonjs_amd_es2015_or_esNext: diag(5071, ts.DiagnosticCategory.Error, "Option_resolveJsonModule_can_only_be_specified_when_module_code_generation_is_commonjs_amd_es2015_or_5071", "Option '--resolveJsonModule' can only be specified when module code generation is 'commonjs', 'amd', 'es2015' or 'esNext'."), + Unknown_build_option_0: diag(5072, ts.DiagnosticCategory.Error, "Unknown_build_option_0_5072", "Unknown build option '{0}'."), + Build_option_0_requires_a_value_of_type_1: diag(5073, ts.DiagnosticCategory.Error, "Build_option_0_requires_a_value_of_type_1_5073", "Build option '{0}' requires a value of type {1}."), + Option_incremental_can_only_be_specified_using_tsconfig_emitting_to_single_file_or_when_option_tsBuildInfoFile_is_specified: diag(5074, ts.DiagnosticCategory.Error, "Option_incremental_can_only_be_specified_using_tsconfig_emitting_to_single_file_or_when_option_tsBui_5074", "Option '--incremental' can only be specified using tsconfig, emitting to single file or when option `--tsBuildInfoFile` is specified."), + _0_is_assignable_to_the_constraint_of_type_1_but_1_could_be_instantiated_with_a_different_subtype_of_constraint_2: diag(5075, ts.DiagnosticCategory.Error, "_0_is_assignable_to_the_constraint_of_type_1_but_1_could_be_instantiated_with_a_different_subtype_of_5075", "'{0}' is assignable to the constraint of type '{1}', but '{1}' could be instantiated with a different subtype of constraint '{2}'."), + _0_and_1_operations_cannot_be_mixed_without_parentheses: diag(5076, ts.DiagnosticCategory.Error, "_0_and_1_operations_cannot_be_mixed_without_parentheses_5076", "'{0}' and '{1}' operations cannot be mixed without parentheses."), + Unknown_build_option_0_Did_you_mean_1: diag(5077, ts.DiagnosticCategory.Error, "Unknown_build_option_0_Did_you_mean_1_5077", "Unknown build option '{0}'. Did you mean '{1}'?"), + Unknown_watch_option_0: diag(5078, ts.DiagnosticCategory.Error, "Unknown_watch_option_0_5078", "Unknown watch option '{0}'."), + Unknown_watch_option_0_Did_you_mean_1: diag(5079, ts.DiagnosticCategory.Error, "Unknown_watch_option_0_Did_you_mean_1_5079", "Unknown watch option '{0}'. Did you mean '{1}'?"), + Watch_option_0_requires_a_value_of_type_1: diag(5080, ts.DiagnosticCategory.Error, "Watch_option_0_requires_a_value_of_type_1_5080", "Watch option '{0}' requires a value of type {1}."), + Cannot_find_a_tsconfig_json_file_at_the_current_directory_Colon_0: diag(5081, ts.DiagnosticCategory.Error, "Cannot_find_a_tsconfig_json_file_at_the_current_directory_Colon_0_5081", "Cannot find a tsconfig.json file at the current directory: {0}."), + _0_could_be_instantiated_with_an_arbitrary_type_which_could_be_unrelated_to_1: diag(5082, ts.DiagnosticCategory.Error, "_0_could_be_instantiated_with_an_arbitrary_type_which_could_be_unrelated_to_1_5082", "'{0}' could be instantiated with an arbitrary type which could be unrelated to '{1}'."), + Cannot_read_file_0: diag(5083, ts.DiagnosticCategory.Error, "Cannot_read_file_0_5083", "Cannot read file '{0}'."), + The_inferred_type_of_0_references_a_type_with_a_cyclic_structure_which_cannot_be_trivially_serialized_A_type_annotation_is_necessary: diag(5088, ts.DiagnosticCategory.Error, "The_inferred_type_of_0_references_a_type_with_a_cyclic_structure_which_cannot_be_trivially_serialize_5088", "The inferred type of '{0}' references a type with a cyclic structure which cannot be trivially serialized. A type annotation is necessary."), + Generates_a_sourcemap_for_each_corresponding_d_ts_file: diag(6000, ts.DiagnosticCategory.Message, "Generates_a_sourcemap_for_each_corresponding_d_ts_file_6000", "Generates a sourcemap for each corresponding '.d.ts' file."), + Concatenate_and_emit_output_to_single_file: diag(6001, ts.DiagnosticCategory.Message, "Concatenate_and_emit_output_to_single_file_6001", "Concatenate and emit output to single file."), + Generates_corresponding_d_ts_file: diag(6002, ts.DiagnosticCategory.Message, "Generates_corresponding_d_ts_file_6002", "Generates corresponding '.d.ts' file."), + Specify_the_location_where_debugger_should_locate_map_files_instead_of_generated_locations: diag(6003, ts.DiagnosticCategory.Message, "Specify_the_location_where_debugger_should_locate_map_files_instead_of_generated_locations_6003", "Specify the location where debugger should locate map files instead of generated locations."), + Specify_the_location_where_debugger_should_locate_TypeScript_files_instead_of_source_locations: diag(6004, ts.DiagnosticCategory.Message, "Specify_the_location_where_debugger_should_locate_TypeScript_files_instead_of_source_locations_6004", "Specify the location where debugger should locate TypeScript files instead of source locations."), + Watch_input_files: diag(6005, ts.DiagnosticCategory.Message, "Watch_input_files_6005", "Watch input files."), + Redirect_output_structure_to_the_directory: diag(6006, ts.DiagnosticCategory.Message, "Redirect_output_structure_to_the_directory_6006", "Redirect output structure to the directory."), + Do_not_erase_const_enum_declarations_in_generated_code: diag(6007, ts.DiagnosticCategory.Message, "Do_not_erase_const_enum_declarations_in_generated_code_6007", "Do not erase const enum declarations in generated code."), + Do_not_emit_outputs_if_any_errors_were_reported: diag(6008, ts.DiagnosticCategory.Message, "Do_not_emit_outputs_if_any_errors_were_reported_6008", "Do not emit outputs if any errors were reported."), + Do_not_emit_comments_to_output: diag(6009, ts.DiagnosticCategory.Message, "Do_not_emit_comments_to_output_6009", "Do not emit comments to output."), + Do_not_emit_outputs: diag(6010, ts.DiagnosticCategory.Message, "Do_not_emit_outputs_6010", "Do not emit outputs."), + Allow_default_imports_from_modules_with_no_default_export_This_does_not_affect_code_emit_just_typechecking: diag(6011, ts.DiagnosticCategory.Message, "Allow_default_imports_from_modules_with_no_default_export_This_does_not_affect_code_emit_just_typech_6011", "Allow default imports from modules with no default export. This does not affect code emit, just typechecking."), + Skip_type_checking_of_declaration_files: diag(6012, ts.DiagnosticCategory.Message, "Skip_type_checking_of_declaration_files_6012", "Skip type checking of declaration files."), + Do_not_resolve_the_real_path_of_symlinks: diag(6013, ts.DiagnosticCategory.Message, "Do_not_resolve_the_real_path_of_symlinks_6013", "Do not resolve the real path of symlinks."), + Only_emit_d_ts_declaration_files: diag(6014, ts.DiagnosticCategory.Message, "Only_emit_d_ts_declaration_files_6014", "Only emit '.d.ts' declaration files."), + Specify_ECMAScript_target_version_Colon_ES3_default_ES5_ES2015_ES2016_ES2017_ES2018_ES2019_ES2020_or_ESNEXT: diag(6015, ts.DiagnosticCategory.Message, "Specify_ECMAScript_target_version_Colon_ES3_default_ES5_ES2015_ES2016_ES2017_ES2018_ES2019_ES2020_or_6015", "Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'."), + Specify_module_code_generation_Colon_none_commonjs_amd_system_umd_es2015_es2020_or_ESNext: diag(6016, ts.DiagnosticCategory.Message, "Specify_module_code_generation_Colon_none_commonjs_amd_system_umd_es2015_es2020_or_ESNext_6016", "Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'."), + Print_this_message: diag(6017, ts.DiagnosticCategory.Message, "Print_this_message_6017", "Print this message."), + Print_the_compiler_s_version: diag(6019, ts.DiagnosticCategory.Message, "Print_the_compiler_s_version_6019", "Print the compiler's version."), + Compile_the_project_given_the_path_to_its_configuration_file_or_to_a_folder_with_a_tsconfig_json: diag(6020, ts.DiagnosticCategory.Message, "Compile_the_project_given_the_path_to_its_configuration_file_or_to_a_folder_with_a_tsconfig_json_6020", "Compile the project given the path to its configuration file, or to a folder with a 'tsconfig.json'."), + Syntax_Colon_0: diag(6023, ts.DiagnosticCategory.Message, "Syntax_Colon_0_6023", "Syntax: {0}"), + options: diag(6024, ts.DiagnosticCategory.Message, "options_6024", "options"), + file: diag(6025, ts.DiagnosticCategory.Message, "file_6025", "file"), + Examples_Colon_0: diag(6026, ts.DiagnosticCategory.Message, "Examples_Colon_0_6026", "Examples: {0}"), + Options_Colon: diag(6027, ts.DiagnosticCategory.Message, "Options_Colon_6027", "Options:"), + Version_0: diag(6029, ts.DiagnosticCategory.Message, "Version_0_6029", "Version {0}"), + Insert_command_line_options_and_files_from_a_file: diag(6030, ts.DiagnosticCategory.Message, "Insert_command_line_options_and_files_from_a_file_6030", "Insert command line options and files from a file."), + Starting_compilation_in_watch_mode: diag(6031, ts.DiagnosticCategory.Message, "Starting_compilation_in_watch_mode_6031", "Starting compilation in watch mode..."), + File_change_detected_Starting_incremental_compilation: diag(6032, ts.DiagnosticCategory.Message, "File_change_detected_Starting_incremental_compilation_6032", "File change detected. Starting incremental compilation..."), + KIND: diag(6034, ts.DiagnosticCategory.Message, "KIND_6034", "KIND"), + FILE: diag(6035, ts.DiagnosticCategory.Message, "FILE_6035", "FILE"), + VERSION: diag(6036, ts.DiagnosticCategory.Message, "VERSION_6036", "VERSION"), + LOCATION: diag(6037, ts.DiagnosticCategory.Message, "LOCATION_6037", "LOCATION"), + DIRECTORY: diag(6038, ts.DiagnosticCategory.Message, "DIRECTORY_6038", "DIRECTORY"), + STRATEGY: diag(6039, ts.DiagnosticCategory.Message, "STRATEGY_6039", "STRATEGY"), + FILE_OR_DIRECTORY: diag(6040, ts.DiagnosticCategory.Message, "FILE_OR_DIRECTORY_6040", "FILE OR DIRECTORY"), + Generates_corresponding_map_file: diag(6043, ts.DiagnosticCategory.Message, "Generates_corresponding_map_file_6043", "Generates corresponding '.map' file."), + Compiler_option_0_expects_an_argument: diag(6044, ts.DiagnosticCategory.Error, "Compiler_option_0_expects_an_argument_6044", "Compiler option '{0}' expects an argument."), + Unterminated_quoted_string_in_response_file_0: diag(6045, ts.DiagnosticCategory.Error, "Unterminated_quoted_string_in_response_file_0_6045", "Unterminated quoted string in response file '{0}'."), + Argument_for_0_option_must_be_Colon_1: diag(6046, ts.DiagnosticCategory.Error, "Argument_for_0_option_must_be_Colon_1_6046", "Argument for '{0}' option must be: {1}."), + Locale_must_be_of_the_form_language_or_language_territory_For_example_0_or_1: diag(6048, ts.DiagnosticCategory.Error, "Locale_must_be_of_the_form_language_or_language_territory_For_example_0_or_1_6048", "Locale must be of the form or -. For example '{0}' or '{1}'."), + Unsupported_locale_0: diag(6049, ts.DiagnosticCategory.Error, "Unsupported_locale_0_6049", "Unsupported locale '{0}'."), + Unable_to_open_file_0: diag(6050, ts.DiagnosticCategory.Error, "Unable_to_open_file_0_6050", "Unable to open file '{0}'."), + Corrupted_locale_file_0: diag(6051, ts.DiagnosticCategory.Error, "Corrupted_locale_file_0_6051", "Corrupted locale file {0}."), + Raise_error_on_expressions_and_declarations_with_an_implied_any_type: diag(6052, ts.DiagnosticCategory.Message, "Raise_error_on_expressions_and_declarations_with_an_implied_any_type_6052", "Raise error on expressions and declarations with an implied 'any' type."), + File_0_not_found: diag(6053, ts.DiagnosticCategory.Error, "File_0_not_found_6053", "File '{0}' not found."), + File_0_has_an_unsupported_extension_The_only_supported_extensions_are_1: diag(6054, ts.DiagnosticCategory.Error, "File_0_has_an_unsupported_extension_The_only_supported_extensions_are_1_6054", "File '{0}' has an unsupported extension. The only supported extensions are {1}."), + Suppress_noImplicitAny_errors_for_indexing_objects_lacking_index_signatures: diag(6055, ts.DiagnosticCategory.Message, "Suppress_noImplicitAny_errors_for_indexing_objects_lacking_index_signatures_6055", "Suppress noImplicitAny errors for indexing objects lacking index signatures."), + Do_not_emit_declarations_for_code_that_has_an_internal_annotation: diag(6056, ts.DiagnosticCategory.Message, "Do_not_emit_declarations_for_code_that_has_an_internal_annotation_6056", "Do not emit declarations for code that has an '@internal' annotation."), + Specify_the_root_directory_of_input_files_Use_to_control_the_output_directory_structure_with_outDir: diag(6058, ts.DiagnosticCategory.Message, "Specify_the_root_directory_of_input_files_Use_to_control_the_output_directory_structure_with_outDir_6058", "Specify the root directory of input files. Use to control the output directory structure with --outDir."), + File_0_is_not_under_rootDir_1_rootDir_is_expected_to_contain_all_source_files: diag(6059, ts.DiagnosticCategory.Error, "File_0_is_not_under_rootDir_1_rootDir_is_expected_to_contain_all_source_files_6059", "File '{0}' is not under 'rootDir' '{1}'. 'rootDir' is expected to contain all source files."), + Specify_the_end_of_line_sequence_to_be_used_when_emitting_files_Colon_CRLF_dos_or_LF_unix: diag(6060, ts.DiagnosticCategory.Message, "Specify_the_end_of_line_sequence_to_be_used_when_emitting_files_Colon_CRLF_dos_or_LF_unix_6060", "Specify the end of line sequence to be used when emitting files: 'CRLF' (dos) or 'LF' (unix)."), + NEWLINE: diag(6061, ts.DiagnosticCategory.Message, "NEWLINE_6061", "NEWLINE"), + Option_0_can_only_be_specified_in_tsconfig_json_file_or_set_to_null_on_command_line: diag(6064, ts.DiagnosticCategory.Error, "Option_0_can_only_be_specified_in_tsconfig_json_file_or_set_to_null_on_command_line_6064", "Option '{0}' can only be specified in 'tsconfig.json' file or set to 'null' on command line."), + Enables_experimental_support_for_ES7_decorators: diag(6065, ts.DiagnosticCategory.Message, "Enables_experimental_support_for_ES7_decorators_6065", "Enables experimental support for ES7 decorators."), + Enables_experimental_support_for_emitting_type_metadata_for_decorators: diag(6066, ts.DiagnosticCategory.Message, "Enables_experimental_support_for_emitting_type_metadata_for_decorators_6066", "Enables experimental support for emitting type metadata for decorators."), + Enables_experimental_support_for_ES7_async_functions: diag(6068, ts.DiagnosticCategory.Message, "Enables_experimental_support_for_ES7_async_functions_6068", "Enables experimental support for ES7 async functions."), + Specify_module_resolution_strategy_Colon_node_Node_js_or_classic_TypeScript_pre_1_6: diag(6069, ts.DiagnosticCategory.Message, "Specify_module_resolution_strategy_Colon_node_Node_js_or_classic_TypeScript_pre_1_6_6069", "Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6)."), + Initializes_a_TypeScript_project_and_creates_a_tsconfig_json_file: diag(6070, ts.DiagnosticCategory.Message, "Initializes_a_TypeScript_project_and_creates_a_tsconfig_json_file_6070", "Initializes a TypeScript project and creates a tsconfig.json file."), + Successfully_created_a_tsconfig_json_file: diag(6071, ts.DiagnosticCategory.Message, "Successfully_created_a_tsconfig_json_file_6071", "Successfully created a tsconfig.json file."), + Suppress_excess_property_checks_for_object_literals: diag(6072, ts.DiagnosticCategory.Message, "Suppress_excess_property_checks_for_object_literals_6072", "Suppress excess property checks for object literals."), + Stylize_errors_and_messages_using_color_and_context_experimental: diag(6073, ts.DiagnosticCategory.Message, "Stylize_errors_and_messages_using_color_and_context_experimental_6073", "Stylize errors and messages using color and context (experimental)."), + Do_not_report_errors_on_unused_labels: diag(6074, ts.DiagnosticCategory.Message, "Do_not_report_errors_on_unused_labels_6074", "Do not report errors on unused labels."), + Report_error_when_not_all_code_paths_in_function_return_a_value: diag(6075, ts.DiagnosticCategory.Message, "Report_error_when_not_all_code_paths_in_function_return_a_value_6075", "Report error when not all code paths in function return a value."), + Report_errors_for_fallthrough_cases_in_switch_statement: diag(6076, ts.DiagnosticCategory.Message, "Report_errors_for_fallthrough_cases_in_switch_statement_6076", "Report errors for fallthrough cases in switch statement."), + Do_not_report_errors_on_unreachable_code: diag(6077, ts.DiagnosticCategory.Message, "Do_not_report_errors_on_unreachable_code_6077", "Do not report errors on unreachable code."), + Disallow_inconsistently_cased_references_to_the_same_file: diag(6078, ts.DiagnosticCategory.Message, "Disallow_inconsistently_cased_references_to_the_same_file_6078", "Disallow inconsistently-cased references to the same file."), + Specify_library_files_to_be_included_in_the_compilation: diag(6079, ts.DiagnosticCategory.Message, "Specify_library_files_to_be_included_in_the_compilation_6079", "Specify library files to be included in the compilation."), + Specify_JSX_code_generation_Colon_preserve_react_native_or_react: diag(6080, ts.DiagnosticCategory.Message, "Specify_JSX_code_generation_Colon_preserve_react_native_or_react_6080", "Specify JSX code generation: 'preserve', 'react-native', or 'react'."), + File_0_has_an_unsupported_extension_so_skipping_it: diag(6081, ts.DiagnosticCategory.Message, "File_0_has_an_unsupported_extension_so_skipping_it_6081", "File '{0}' has an unsupported extension, so skipping it."), + Only_amd_and_system_modules_are_supported_alongside_0: diag(6082, ts.DiagnosticCategory.Error, "Only_amd_and_system_modules_are_supported_alongside_0_6082", "Only 'amd' and 'system' modules are supported alongside --{0}."), + Base_directory_to_resolve_non_absolute_module_names: diag(6083, ts.DiagnosticCategory.Message, "Base_directory_to_resolve_non_absolute_module_names_6083", "Base directory to resolve non-absolute module names."), + Deprecated_Use_jsxFactory_instead_Specify_the_object_invoked_for_createElement_when_targeting_react_JSX_emit: diag(6084, ts.DiagnosticCategory.Message, "Deprecated_Use_jsxFactory_instead_Specify_the_object_invoked_for_createElement_when_targeting_react__6084", "[Deprecated] Use '--jsxFactory' instead. Specify the object invoked for createElement when targeting 'react' JSX emit"), + Enable_tracing_of_the_name_resolution_process: diag(6085, ts.DiagnosticCategory.Message, "Enable_tracing_of_the_name_resolution_process_6085", "Enable tracing of the name resolution process."), + Resolving_module_0_from_1: diag(6086, ts.DiagnosticCategory.Message, "Resolving_module_0_from_1_6086", "======== Resolving module '{0}' from '{1}'. ========"), + Explicitly_specified_module_resolution_kind_Colon_0: diag(6087, ts.DiagnosticCategory.Message, "Explicitly_specified_module_resolution_kind_Colon_0_6087", "Explicitly specified module resolution kind: '{0}'."), + Module_resolution_kind_is_not_specified_using_0: diag(6088, ts.DiagnosticCategory.Message, "Module_resolution_kind_is_not_specified_using_0_6088", "Module resolution kind is not specified, using '{0}'."), + Module_name_0_was_successfully_resolved_to_1: diag(6089, ts.DiagnosticCategory.Message, "Module_name_0_was_successfully_resolved_to_1_6089", "======== Module name '{0}' was successfully resolved to '{1}'. ========"), + Module_name_0_was_not_resolved: diag(6090, ts.DiagnosticCategory.Message, "Module_name_0_was_not_resolved_6090", "======== Module name '{0}' was not resolved. ========"), + paths_option_is_specified_looking_for_a_pattern_to_match_module_name_0: diag(6091, ts.DiagnosticCategory.Message, "paths_option_is_specified_looking_for_a_pattern_to_match_module_name_0_6091", "'paths' option is specified, looking for a pattern to match module name '{0}'."), + Module_name_0_matched_pattern_1: diag(6092, ts.DiagnosticCategory.Message, "Module_name_0_matched_pattern_1_6092", "Module name '{0}', matched pattern '{1}'."), + Trying_substitution_0_candidate_module_location_Colon_1: diag(6093, ts.DiagnosticCategory.Message, "Trying_substitution_0_candidate_module_location_Colon_1_6093", "Trying substitution '{0}', candidate module location: '{1}'."), + Resolving_module_name_0_relative_to_base_url_1_2: diag(6094, ts.DiagnosticCategory.Message, "Resolving_module_name_0_relative_to_base_url_1_2_6094", "Resolving module name '{0}' relative to base url '{1}' - '{2}'."), + Loading_module_as_file_Slash_folder_candidate_module_location_0_target_file_type_1: diag(6095, ts.DiagnosticCategory.Message, "Loading_module_as_file_Slash_folder_candidate_module_location_0_target_file_type_1_6095", "Loading module as file / folder, candidate module location '{0}', target file type '{1}'."), + File_0_does_not_exist: diag(6096, ts.DiagnosticCategory.Message, "File_0_does_not_exist_6096", "File '{0}' does not exist."), + File_0_exist_use_it_as_a_name_resolution_result: diag(6097, ts.DiagnosticCategory.Message, "File_0_exist_use_it_as_a_name_resolution_result_6097", "File '{0}' exist - use it as a name resolution result."), + Loading_module_0_from_node_modules_folder_target_file_type_1: diag(6098, ts.DiagnosticCategory.Message, "Loading_module_0_from_node_modules_folder_target_file_type_1_6098", "Loading module '{0}' from 'node_modules' folder, target file type '{1}'."), + Found_package_json_at_0: diag(6099, ts.DiagnosticCategory.Message, "Found_package_json_at_0_6099", "Found 'package.json' at '{0}'."), + package_json_does_not_have_a_0_field: diag(6100, ts.DiagnosticCategory.Message, "package_json_does_not_have_a_0_field_6100", "'package.json' does not have a '{0}' field."), + package_json_has_0_field_1_that_references_2: diag(6101, ts.DiagnosticCategory.Message, "package_json_has_0_field_1_that_references_2_6101", "'package.json' has '{0}' field '{1}' that references '{2}'."), + Allow_javascript_files_to_be_compiled: diag(6102, ts.DiagnosticCategory.Message, "Allow_javascript_files_to_be_compiled_6102", "Allow javascript files to be compiled."), + Option_0_should_have_array_of_strings_as_a_value: diag(6103, ts.DiagnosticCategory.Error, "Option_0_should_have_array_of_strings_as_a_value_6103", "Option '{0}' should have array of strings as a value."), + Checking_if_0_is_the_longest_matching_prefix_for_1_2: diag(6104, ts.DiagnosticCategory.Message, "Checking_if_0_is_the_longest_matching_prefix_for_1_2_6104", "Checking if '{0}' is the longest matching prefix for '{1}' - '{2}'."), + Expected_type_of_0_field_in_package_json_to_be_1_got_2: diag(6105, ts.DiagnosticCategory.Message, "Expected_type_of_0_field_in_package_json_to_be_1_got_2_6105", "Expected type of '{0}' field in 'package.json' to be '{1}', got '{2}'."), + baseUrl_option_is_set_to_0_using_this_value_to_resolve_non_relative_module_name_1: diag(6106, ts.DiagnosticCategory.Message, "baseUrl_option_is_set_to_0_using_this_value_to_resolve_non_relative_module_name_1_6106", "'baseUrl' option is set to '{0}', using this value to resolve non-relative module name '{1}'."), + rootDirs_option_is_set_using_it_to_resolve_relative_module_name_0: diag(6107, ts.DiagnosticCategory.Message, "rootDirs_option_is_set_using_it_to_resolve_relative_module_name_0_6107", "'rootDirs' option is set, using it to resolve relative module name '{0}'."), + Longest_matching_prefix_for_0_is_1: diag(6108, ts.DiagnosticCategory.Message, "Longest_matching_prefix_for_0_is_1_6108", "Longest matching prefix for '{0}' is '{1}'."), + Loading_0_from_the_root_dir_1_candidate_location_2: diag(6109, ts.DiagnosticCategory.Message, "Loading_0_from_the_root_dir_1_candidate_location_2_6109", "Loading '{0}' from the root dir '{1}', candidate location '{2}'."), + Trying_other_entries_in_rootDirs: diag(6110, ts.DiagnosticCategory.Message, "Trying_other_entries_in_rootDirs_6110", "Trying other entries in 'rootDirs'."), + Module_resolution_using_rootDirs_has_failed: diag(6111, ts.DiagnosticCategory.Message, "Module_resolution_using_rootDirs_has_failed_6111", "Module resolution using 'rootDirs' has failed."), + Do_not_emit_use_strict_directives_in_module_output: diag(6112, ts.DiagnosticCategory.Message, "Do_not_emit_use_strict_directives_in_module_output_6112", "Do not emit 'use strict' directives in module output."), + Enable_strict_null_checks: diag(6113, ts.DiagnosticCategory.Message, "Enable_strict_null_checks_6113", "Enable strict null checks."), + Unknown_option_excludes_Did_you_mean_exclude: diag(6114, ts.DiagnosticCategory.Error, "Unknown_option_excludes_Did_you_mean_exclude_6114", "Unknown option 'excludes'. Did you mean 'exclude'?"), + Raise_error_on_this_expressions_with_an_implied_any_type: diag(6115, ts.DiagnosticCategory.Message, "Raise_error_on_this_expressions_with_an_implied_any_type_6115", "Raise error on 'this' expressions with an implied 'any' type."), + Resolving_type_reference_directive_0_containing_file_1_root_directory_2: diag(6116, ts.DiagnosticCategory.Message, "Resolving_type_reference_directive_0_containing_file_1_root_directory_2_6116", "======== Resolving type reference directive '{0}', containing file '{1}', root directory '{2}'. ========"), + Resolving_using_primary_search_paths: diag(6117, ts.DiagnosticCategory.Message, "Resolving_using_primary_search_paths_6117", "Resolving using primary search paths..."), + Resolving_from_node_modules_folder: diag(6118, ts.DiagnosticCategory.Message, "Resolving_from_node_modules_folder_6118", "Resolving from node_modules folder..."), + Type_reference_directive_0_was_successfully_resolved_to_1_primary_Colon_2: diag(6119, ts.DiagnosticCategory.Message, "Type_reference_directive_0_was_successfully_resolved_to_1_primary_Colon_2_6119", "======== Type reference directive '{0}' was successfully resolved to '{1}', primary: {2}. ========"), + Type_reference_directive_0_was_not_resolved: diag(6120, ts.DiagnosticCategory.Message, "Type_reference_directive_0_was_not_resolved_6120", "======== Type reference directive '{0}' was not resolved. ========"), + Resolving_with_primary_search_path_0: diag(6121, ts.DiagnosticCategory.Message, "Resolving_with_primary_search_path_0_6121", "Resolving with primary search path '{0}'."), + Root_directory_cannot_be_determined_skipping_primary_search_paths: diag(6122, ts.DiagnosticCategory.Message, "Root_directory_cannot_be_determined_skipping_primary_search_paths_6122", "Root directory cannot be determined, skipping primary search paths."), + Resolving_type_reference_directive_0_containing_file_1_root_directory_not_set: diag(6123, ts.DiagnosticCategory.Message, "Resolving_type_reference_directive_0_containing_file_1_root_directory_not_set_6123", "======== Resolving type reference directive '{0}', containing file '{1}', root directory not set. ========"), + Type_declaration_files_to_be_included_in_compilation: diag(6124, ts.DiagnosticCategory.Message, "Type_declaration_files_to_be_included_in_compilation_6124", "Type declaration files to be included in compilation."), + Looking_up_in_node_modules_folder_initial_location_0: diag(6125, ts.DiagnosticCategory.Message, "Looking_up_in_node_modules_folder_initial_location_0_6125", "Looking up in 'node_modules' folder, initial location '{0}'."), + Containing_file_is_not_specified_and_root_directory_cannot_be_determined_skipping_lookup_in_node_modules_folder: diag(6126, ts.DiagnosticCategory.Message, "Containing_file_is_not_specified_and_root_directory_cannot_be_determined_skipping_lookup_in_node_mod_6126", "Containing file is not specified and root directory cannot be determined, skipping lookup in 'node_modules' folder."), + Resolving_type_reference_directive_0_containing_file_not_set_root_directory_1: diag(6127, ts.DiagnosticCategory.Message, "Resolving_type_reference_directive_0_containing_file_not_set_root_directory_1_6127", "======== Resolving type reference directive '{0}', containing file not set, root directory '{1}'. ========"), + Resolving_type_reference_directive_0_containing_file_not_set_root_directory_not_set: diag(6128, ts.DiagnosticCategory.Message, "Resolving_type_reference_directive_0_containing_file_not_set_root_directory_not_set_6128", "======== Resolving type reference directive '{0}', containing file not set, root directory not set. ========"), + Resolving_real_path_for_0_result_1: diag(6130, ts.DiagnosticCategory.Message, "Resolving_real_path_for_0_result_1_6130", "Resolving real path for '{0}', result '{1}'."), + Cannot_compile_modules_using_option_0_unless_the_module_flag_is_amd_or_system: diag(6131, ts.DiagnosticCategory.Error, "Cannot_compile_modules_using_option_0_unless_the_module_flag_is_amd_or_system_6131", "Cannot compile modules using option '{0}' unless the '--module' flag is 'amd' or 'system'."), + File_name_0_has_a_1_extension_stripping_it: diag(6132, ts.DiagnosticCategory.Message, "File_name_0_has_a_1_extension_stripping_it_6132", "File name '{0}' has a '{1}' extension - stripping it."), + _0_is_declared_but_its_value_is_never_read: diag(6133, ts.DiagnosticCategory.Error, "_0_is_declared_but_its_value_is_never_read_6133", "'{0}' is declared but its value is never read.", /*reportsUnnecessary*/ true), + Report_errors_on_unused_locals: diag(6134, ts.DiagnosticCategory.Message, "Report_errors_on_unused_locals_6134", "Report errors on unused locals."), + Report_errors_on_unused_parameters: diag(6135, ts.DiagnosticCategory.Message, "Report_errors_on_unused_parameters_6135", "Report errors on unused parameters."), + The_maximum_dependency_depth_to_search_under_node_modules_and_load_JavaScript_files: diag(6136, ts.DiagnosticCategory.Message, "The_maximum_dependency_depth_to_search_under_node_modules_and_load_JavaScript_files_6136", "The maximum dependency depth to search under node_modules and load JavaScript files."), + Cannot_import_type_declaration_files_Consider_importing_0_instead_of_1: diag(6137, ts.DiagnosticCategory.Error, "Cannot_import_type_declaration_files_Consider_importing_0_instead_of_1_6137", "Cannot import type declaration files. Consider importing '{0}' instead of '{1}'."), + Property_0_is_declared_but_its_value_is_never_read: diag(6138, ts.DiagnosticCategory.Error, "Property_0_is_declared_but_its_value_is_never_read_6138", "Property '{0}' is declared but its value is never read.", /*reportsUnnecessary*/ true), + Import_emit_helpers_from_tslib: diag(6139, ts.DiagnosticCategory.Message, "Import_emit_helpers_from_tslib_6139", "Import emit helpers from 'tslib'."), + Auto_discovery_for_typings_is_enabled_in_project_0_Running_extra_resolution_pass_for_module_1_using_cache_location_2: diag(6140, ts.DiagnosticCategory.Error, "Auto_discovery_for_typings_is_enabled_in_project_0_Running_extra_resolution_pass_for_module_1_using__6140", "Auto discovery for typings is enabled in project '{0}'. Running extra resolution pass for module '{1}' using cache location '{2}'."), + Parse_in_strict_mode_and_emit_use_strict_for_each_source_file: diag(6141, ts.DiagnosticCategory.Message, "Parse_in_strict_mode_and_emit_use_strict_for_each_source_file_6141", "Parse in strict mode and emit \"use strict\" for each source file."), + Module_0_was_resolved_to_1_but_jsx_is_not_set: diag(6142, ts.DiagnosticCategory.Error, "Module_0_was_resolved_to_1_but_jsx_is_not_set_6142", "Module '{0}' was resolved to '{1}', but '--jsx' is not set."), + Module_0_was_resolved_as_locally_declared_ambient_module_in_file_1: diag(6144, ts.DiagnosticCategory.Message, "Module_0_was_resolved_as_locally_declared_ambient_module_in_file_1_6144", "Module '{0}' was resolved as locally declared ambient module in file '{1}'."), + Module_0_was_resolved_as_ambient_module_declared_in_1_since_this_file_was_not_modified: diag(6145, ts.DiagnosticCategory.Message, "Module_0_was_resolved_as_ambient_module_declared_in_1_since_this_file_was_not_modified_6145", "Module '{0}' was resolved as ambient module declared in '{1}' since this file was not modified."), + Specify_the_JSX_factory_function_to_use_when_targeting_react_JSX_emit_e_g_React_createElement_or_h: diag(6146, ts.DiagnosticCategory.Message, "Specify_the_JSX_factory_function_to_use_when_targeting_react_JSX_emit_e_g_React_createElement_or_h_6146", "Specify the JSX factory function to use when targeting 'react' JSX emit, e.g. 'React.createElement' or 'h'."), + Resolution_for_module_0_was_found_in_cache_from_location_1: diag(6147, ts.DiagnosticCategory.Message, "Resolution_for_module_0_was_found_in_cache_from_location_1_6147", "Resolution for module '{0}' was found in cache from location '{1}'."), + Directory_0_does_not_exist_skipping_all_lookups_in_it: diag(6148, ts.DiagnosticCategory.Message, "Directory_0_does_not_exist_skipping_all_lookups_in_it_6148", "Directory '{0}' does not exist, skipping all lookups in it."), + Show_diagnostic_information: diag(6149, ts.DiagnosticCategory.Message, "Show_diagnostic_information_6149", "Show diagnostic information."), + Show_verbose_diagnostic_information: diag(6150, ts.DiagnosticCategory.Message, "Show_verbose_diagnostic_information_6150", "Show verbose diagnostic information."), + Emit_a_single_file_with_source_maps_instead_of_having_a_separate_file: diag(6151, ts.DiagnosticCategory.Message, "Emit_a_single_file_with_source_maps_instead_of_having_a_separate_file_6151", "Emit a single file with source maps instead of having a separate file."), + Emit_the_source_alongside_the_sourcemaps_within_a_single_file_requires_inlineSourceMap_or_sourceMap_to_be_set: diag(6152, ts.DiagnosticCategory.Message, "Emit_the_source_alongside_the_sourcemaps_within_a_single_file_requires_inlineSourceMap_or_sourceMap__6152", "Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set."), + Transpile_each_file_as_a_separate_module_similar_to_ts_transpileModule: diag(6153, ts.DiagnosticCategory.Message, "Transpile_each_file_as_a_separate_module_similar_to_ts_transpileModule_6153", "Transpile each file as a separate module (similar to 'ts.transpileModule')."), + Print_names_of_generated_files_part_of_the_compilation: diag(6154, ts.DiagnosticCategory.Message, "Print_names_of_generated_files_part_of_the_compilation_6154", "Print names of generated files part of the compilation."), + Print_names_of_files_part_of_the_compilation: diag(6155, ts.DiagnosticCategory.Message, "Print_names_of_files_part_of_the_compilation_6155", "Print names of files part of the compilation."), + The_locale_used_when_displaying_messages_to_the_user_e_g_en_us: diag(6156, ts.DiagnosticCategory.Message, "The_locale_used_when_displaying_messages_to_the_user_e_g_en_us_6156", "The locale used when displaying messages to the user (e.g. 'en-us')"), + Do_not_generate_custom_helper_functions_like_extends_in_compiled_output: diag(6157, ts.DiagnosticCategory.Message, "Do_not_generate_custom_helper_functions_like_extends_in_compiled_output_6157", "Do not generate custom helper functions like '__extends' in compiled output."), + Do_not_include_the_default_library_file_lib_d_ts: diag(6158, ts.DiagnosticCategory.Message, "Do_not_include_the_default_library_file_lib_d_ts_6158", "Do not include the default library file (lib.d.ts)."), + Do_not_add_triple_slash_references_or_imported_modules_to_the_list_of_compiled_files: diag(6159, ts.DiagnosticCategory.Message, "Do_not_add_triple_slash_references_or_imported_modules_to_the_list_of_compiled_files_6159", "Do not add triple-slash references or imported modules to the list of compiled files."), + Deprecated_Use_skipLibCheck_instead_Skip_type_checking_of_default_library_declaration_files: diag(6160, ts.DiagnosticCategory.Message, "Deprecated_Use_skipLibCheck_instead_Skip_type_checking_of_default_library_declaration_files_6160", "[Deprecated] Use '--skipLibCheck' instead. Skip type checking of default library declaration files."), + List_of_folders_to_include_type_definitions_from: diag(6161, ts.DiagnosticCategory.Message, "List_of_folders_to_include_type_definitions_from_6161", "List of folders to include type definitions from."), + Disable_size_limitations_on_JavaScript_projects: diag(6162, ts.DiagnosticCategory.Message, "Disable_size_limitations_on_JavaScript_projects_6162", "Disable size limitations on JavaScript projects."), + The_character_set_of_the_input_files: diag(6163, ts.DiagnosticCategory.Message, "The_character_set_of_the_input_files_6163", "The character set of the input files."), + Emit_a_UTF_8_Byte_Order_Mark_BOM_in_the_beginning_of_output_files: diag(6164, ts.DiagnosticCategory.Message, "Emit_a_UTF_8_Byte_Order_Mark_BOM_in_the_beginning_of_output_files_6164", "Emit a UTF-8 Byte Order Mark (BOM) in the beginning of output files."), + Do_not_truncate_error_messages: diag(6165, ts.DiagnosticCategory.Message, "Do_not_truncate_error_messages_6165", "Do not truncate error messages."), + Output_directory_for_generated_declaration_files: diag(6166, ts.DiagnosticCategory.Message, "Output_directory_for_generated_declaration_files_6166", "Output directory for generated declaration files."), + A_series_of_entries_which_re_map_imports_to_lookup_locations_relative_to_the_baseUrl: diag(6167, ts.DiagnosticCategory.Message, "A_series_of_entries_which_re_map_imports_to_lookup_locations_relative_to_the_baseUrl_6167", "A series of entries which re-map imports to lookup locations relative to the 'baseUrl'."), + List_of_root_folders_whose_combined_content_represents_the_structure_of_the_project_at_runtime: diag(6168, ts.DiagnosticCategory.Message, "List_of_root_folders_whose_combined_content_represents_the_structure_of_the_project_at_runtime_6168", "List of root folders whose combined content represents the structure of the project at runtime."), + Show_all_compiler_options: diag(6169, ts.DiagnosticCategory.Message, "Show_all_compiler_options_6169", "Show all compiler options."), + Deprecated_Use_outFile_instead_Concatenate_and_emit_output_to_single_file: diag(6170, ts.DiagnosticCategory.Message, "Deprecated_Use_outFile_instead_Concatenate_and_emit_output_to_single_file_6170", "[Deprecated] Use '--outFile' instead. Concatenate and emit output to single file"), + Command_line_Options: diag(6171, ts.DiagnosticCategory.Message, "Command_line_Options_6171", "Command-line Options"), + Basic_Options: diag(6172, ts.DiagnosticCategory.Message, "Basic_Options_6172", "Basic Options"), + Strict_Type_Checking_Options: diag(6173, ts.DiagnosticCategory.Message, "Strict_Type_Checking_Options_6173", "Strict Type-Checking Options"), + Module_Resolution_Options: diag(6174, ts.DiagnosticCategory.Message, "Module_Resolution_Options_6174", "Module Resolution Options"), + Source_Map_Options: diag(6175, ts.DiagnosticCategory.Message, "Source_Map_Options_6175", "Source Map Options"), + Additional_Checks: diag(6176, ts.DiagnosticCategory.Message, "Additional_Checks_6176", "Additional Checks"), + Experimental_Options: diag(6177, ts.DiagnosticCategory.Message, "Experimental_Options_6177", "Experimental Options"), + Advanced_Options: diag(6178, ts.DiagnosticCategory.Message, "Advanced_Options_6178", "Advanced Options"), + Provide_full_support_for_iterables_in_for_of_spread_and_destructuring_when_targeting_ES5_or_ES3: diag(6179, ts.DiagnosticCategory.Message, "Provide_full_support_for_iterables_in_for_of_spread_and_destructuring_when_targeting_ES5_or_ES3_6179", "Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'."), + Enable_all_strict_type_checking_options: diag(6180, ts.DiagnosticCategory.Message, "Enable_all_strict_type_checking_options_6180", "Enable all strict type-checking options."), + List_of_language_service_plugins: diag(6181, ts.DiagnosticCategory.Message, "List_of_language_service_plugins_6181", "List of language service plugins."), + Scoped_package_detected_looking_in_0: diag(6182, ts.DiagnosticCategory.Message, "Scoped_package_detected_looking_in_0_6182", "Scoped package detected, looking in '{0}'"), + Reusing_resolution_of_module_0_to_file_1_from_old_program: diag(6183, ts.DiagnosticCategory.Message, "Reusing_resolution_of_module_0_to_file_1_from_old_program_6183", "Reusing resolution of module '{0}' to file '{1}' from old program."), + Reusing_module_resolutions_originating_in_0_since_resolutions_are_unchanged_from_old_program: diag(6184, ts.DiagnosticCategory.Message, "Reusing_module_resolutions_originating_in_0_since_resolutions_are_unchanged_from_old_program_6184", "Reusing module resolutions originating in '{0}' since resolutions are unchanged from old program."), + Disable_strict_checking_of_generic_signatures_in_function_types: diag(6185, ts.DiagnosticCategory.Message, "Disable_strict_checking_of_generic_signatures_in_function_types_6185", "Disable strict checking of generic signatures in function types."), + Enable_strict_checking_of_function_types: diag(6186, ts.DiagnosticCategory.Message, "Enable_strict_checking_of_function_types_6186", "Enable strict checking of function types."), + Enable_strict_checking_of_property_initialization_in_classes: diag(6187, ts.DiagnosticCategory.Message, "Enable_strict_checking_of_property_initialization_in_classes_6187", "Enable strict checking of property initialization in classes."), + Numeric_separators_are_not_allowed_here: diag(6188, ts.DiagnosticCategory.Error, "Numeric_separators_are_not_allowed_here_6188", "Numeric separators are not allowed here."), + Multiple_consecutive_numeric_separators_are_not_permitted: diag(6189, ts.DiagnosticCategory.Error, "Multiple_consecutive_numeric_separators_are_not_permitted_6189", "Multiple consecutive numeric separators are not permitted."), + Whether_to_keep_outdated_console_output_in_watch_mode_instead_of_clearing_the_screen: diag(6191, ts.DiagnosticCategory.Message, "Whether_to_keep_outdated_console_output_in_watch_mode_instead_of_clearing_the_screen_6191", "Whether to keep outdated console output in watch mode instead of clearing the screen."), + All_imports_in_import_declaration_are_unused: diag(6192, ts.DiagnosticCategory.Error, "All_imports_in_import_declaration_are_unused_6192", "All imports in import declaration are unused.", /*reportsUnnecessary*/ true), + Found_1_error_Watching_for_file_changes: diag(6193, ts.DiagnosticCategory.Message, "Found_1_error_Watching_for_file_changes_6193", "Found 1 error. Watching for file changes."), + Found_0_errors_Watching_for_file_changes: diag(6194, ts.DiagnosticCategory.Message, "Found_0_errors_Watching_for_file_changes_6194", "Found {0} errors. Watching for file changes."), + Resolve_keyof_to_string_valued_property_names_only_no_numbers_or_symbols: diag(6195, ts.DiagnosticCategory.Message, "Resolve_keyof_to_string_valued_property_names_only_no_numbers_or_symbols_6195", "Resolve 'keyof' to string valued property names only (no numbers or symbols)."), + _0_is_declared_but_never_used: diag(6196, ts.DiagnosticCategory.Error, "_0_is_declared_but_never_used_6196", "'{0}' is declared but never used.", /*reportsUnnecessary*/ true), + Include_modules_imported_with_json_extension: diag(6197, ts.DiagnosticCategory.Message, "Include_modules_imported_with_json_extension_6197", "Include modules imported with '.json' extension"), + All_destructured_elements_are_unused: diag(6198, ts.DiagnosticCategory.Error, "All_destructured_elements_are_unused_6198", "All destructured elements are unused.", /*reportsUnnecessary*/ true), + All_variables_are_unused: diag(6199, ts.DiagnosticCategory.Error, "All_variables_are_unused_6199", "All variables are unused.", /*reportsUnnecessary*/ true), + Definitions_of_the_following_identifiers_conflict_with_those_in_another_file_Colon_0: diag(6200, ts.DiagnosticCategory.Error, "Definitions_of_the_following_identifiers_conflict_with_those_in_another_file_Colon_0_6200", "Definitions of the following identifiers conflict with those in another file: {0}"), + Conflicts_are_in_this_file: diag(6201, ts.DiagnosticCategory.Message, "Conflicts_are_in_this_file_6201", "Conflicts are in this file."), + Project_references_may_not_form_a_circular_graph_Cycle_detected_Colon_0: diag(6202, ts.DiagnosticCategory.Error, "Project_references_may_not_form_a_circular_graph_Cycle_detected_Colon_0_6202", "Project references may not form a circular graph. Cycle detected: {0}"), + _0_was_also_declared_here: diag(6203, ts.DiagnosticCategory.Message, "_0_was_also_declared_here_6203", "'{0}' was also declared here."), + and_here: diag(6204, ts.DiagnosticCategory.Message, "and_here_6204", "and here."), + All_type_parameters_are_unused: diag(6205, ts.DiagnosticCategory.Error, "All_type_parameters_are_unused_6205", "All type parameters are unused"), + package_json_has_a_typesVersions_field_with_version_specific_path_mappings: diag(6206, ts.DiagnosticCategory.Message, "package_json_has_a_typesVersions_field_with_version_specific_path_mappings_6206", "'package.json' has a 'typesVersions' field with version-specific path mappings."), + package_json_does_not_have_a_typesVersions_entry_that_matches_version_0: diag(6207, ts.DiagnosticCategory.Message, "package_json_does_not_have_a_typesVersions_entry_that_matches_version_0_6207", "'package.json' does not have a 'typesVersions' entry that matches version '{0}'."), + package_json_has_a_typesVersions_entry_0_that_matches_compiler_version_1_looking_for_a_pattern_to_match_module_name_2: diag(6208, ts.DiagnosticCategory.Message, "package_json_has_a_typesVersions_entry_0_that_matches_compiler_version_1_looking_for_a_pattern_to_ma_6208", "'package.json' has a 'typesVersions' entry '{0}' that matches compiler version '{1}', looking for a pattern to match module name '{2}'."), + package_json_has_a_typesVersions_entry_0_that_is_not_a_valid_semver_range: diag(6209, ts.DiagnosticCategory.Message, "package_json_has_a_typesVersions_entry_0_that_is_not_a_valid_semver_range_6209", "'package.json' has a 'typesVersions' entry '{0}' that is not a valid semver range."), + An_argument_for_0_was_not_provided: diag(6210, ts.DiagnosticCategory.Message, "An_argument_for_0_was_not_provided_6210", "An argument for '{0}' was not provided."), + An_argument_matching_this_binding_pattern_was_not_provided: diag(6211, ts.DiagnosticCategory.Message, "An_argument_matching_this_binding_pattern_was_not_provided_6211", "An argument matching this binding pattern was not provided."), + Did_you_mean_to_call_this_expression: diag(6212, ts.DiagnosticCategory.Message, "Did_you_mean_to_call_this_expression_6212", "Did you mean to call this expression?"), + Did_you_mean_to_use_new_with_this_expression: diag(6213, ts.DiagnosticCategory.Message, "Did_you_mean_to_use_new_with_this_expression_6213", "Did you mean to use 'new' with this expression?"), + Enable_strict_bind_call_and_apply_methods_on_functions: diag(6214, ts.DiagnosticCategory.Message, "Enable_strict_bind_call_and_apply_methods_on_functions_6214", "Enable strict 'bind', 'call', and 'apply' methods on functions."), + Using_compiler_options_of_project_reference_redirect_0: diag(6215, ts.DiagnosticCategory.Message, "Using_compiler_options_of_project_reference_redirect_0_6215", "Using compiler options of project reference redirect '{0}'."), + Found_1_error: diag(6216, ts.DiagnosticCategory.Message, "Found_1_error_6216", "Found 1 error."), + Found_0_errors: diag(6217, ts.DiagnosticCategory.Message, "Found_0_errors_6217", "Found {0} errors."), + Module_name_0_was_successfully_resolved_to_1_with_Package_ID_2: diag(6218, ts.DiagnosticCategory.Message, "Module_name_0_was_successfully_resolved_to_1_with_Package_ID_2_6218", "======== Module name '{0}' was successfully resolved to '{1}' with Package ID '{2}'. ========"), + Type_reference_directive_0_was_successfully_resolved_to_1_with_Package_ID_2_primary_Colon_3: diag(6219, ts.DiagnosticCategory.Message, "Type_reference_directive_0_was_successfully_resolved_to_1_with_Package_ID_2_primary_Colon_3_6219", "======== Type reference directive '{0}' was successfully resolved to '{1}' with Package ID '{2}', primary: {3}. ========"), + package_json_had_a_falsy_0_field: diag(6220, ts.DiagnosticCategory.Message, "package_json_had_a_falsy_0_field_6220", "'package.json' had a falsy '{0}' field."), + Disable_use_of_source_files_instead_of_declaration_files_from_referenced_projects: diag(6221, ts.DiagnosticCategory.Message, "Disable_use_of_source_files_instead_of_declaration_files_from_referenced_projects_6221", "Disable use of source files instead of declaration files from referenced projects."), + Emit_class_fields_with_Define_instead_of_Set: diag(6222, ts.DiagnosticCategory.Message, "Emit_class_fields_with_Define_instead_of_Set_6222", "Emit class fields with Define instead of Set."), + Generates_a_CPU_profile: diag(6223, ts.DiagnosticCategory.Message, "Generates_a_CPU_profile_6223", "Generates a CPU profile."), + Disable_solution_searching_for_this_project: diag(6224, ts.DiagnosticCategory.Message, "Disable_solution_searching_for_this_project_6224", "Disable solution searching for this project."), + Specify_strategy_for_watching_file_Colon_FixedPollingInterval_default_PriorityPollingInterval_DynamicPriorityPolling_UseFsEvents_UseFsEventsOnParentDirectory: diag(6225, ts.DiagnosticCategory.Message, "Specify_strategy_for_watching_file_Colon_FixedPollingInterval_default_PriorityPollingInterval_Dynami_6225", "Specify strategy for watching file: 'FixedPollingInterval' (default), 'PriorityPollingInterval', 'DynamicPriorityPolling', 'UseFsEvents', 'UseFsEventsOnParentDirectory'."), + Specify_strategy_for_watching_directory_on_platforms_that_don_t_support_recursive_watching_natively_Colon_UseFsEvents_default_FixedPollingInterval_DynamicPriorityPolling: diag(6226, ts.DiagnosticCategory.Message, "Specify_strategy_for_watching_directory_on_platforms_that_don_t_support_recursive_watching_natively__6226", "Specify strategy for watching directory on platforms that don't support recursive watching natively: 'UseFsEvents' (default), 'FixedPollingInterval', 'DynamicPriorityPolling'."), + Specify_strategy_for_creating_a_polling_watch_when_it_fails_to_create_using_file_system_events_Colon_FixedInterval_default_PriorityInterval_DynamicPriority: diag(6227, ts.DiagnosticCategory.Message, "Specify_strategy_for_creating_a_polling_watch_when_it_fails_to_create_using_file_system_events_Colon_6227", "Specify strategy for creating a polling watch when it fails to create using file system events: 'FixedInterval' (default), 'PriorityInterval', 'DynamicPriority'."), + Synchronously_call_callbacks_and_update_the_state_of_directory_watchers_on_platforms_that_don_t_support_recursive_watching_natively: diag(6228, ts.DiagnosticCategory.Message, "Synchronously_call_callbacks_and_update_the_state_of_directory_watchers_on_platforms_that_don_t_supp_6228", "Synchronously call callbacks and update the state of directory watchers on platforms that don't support recursive watching natively."), + Tag_0_expects_at_least_1_arguments_but_the_JSX_factory_2_provides_at_most_3: diag(6229, ts.DiagnosticCategory.Error, "Tag_0_expects_at_least_1_arguments_but_the_JSX_factory_2_provides_at_most_3_6229", "Tag '{0}' expects at least '{1}' arguments, but the JSX factory '{2}' provides at most '{3}'."), + Option_0_can_only_be_specified_in_tsconfig_json_file_or_set_to_false_or_null_on_command_line: diag(6230, ts.DiagnosticCategory.Error, "Option_0_can_only_be_specified_in_tsconfig_json_file_or_set_to_false_or_null_on_command_line_6230", "Option '{0}' can only be specified in 'tsconfig.json' file or set to 'false' or 'null' on command line."), + Could_not_resolve_the_path_0_with_the_extensions_Colon_1: diag(6231, ts.DiagnosticCategory.Error, "Could_not_resolve_the_path_0_with_the_extensions_Colon_1_6231", "Could not resolve the path '{0}' with the extensions: {1}."), + Declaration_augments_declaration_in_another_file_This_cannot_be_serialized: diag(6232, ts.DiagnosticCategory.Error, "Declaration_augments_declaration_in_another_file_This_cannot_be_serialized_6232", "Declaration augments declaration in another file. This cannot be serialized."), + This_is_the_declaration_being_augmented_Consider_moving_the_augmenting_declaration_into_the_same_file: diag(6233, ts.DiagnosticCategory.Error, "This_is_the_declaration_being_augmented_Consider_moving_the_augmenting_declaration_into_the_same_fil_6233", "This is the declaration being augmented. Consider moving the augmenting declaration into the same file."), + Projects_to_reference: diag(6300, ts.DiagnosticCategory.Message, "Projects_to_reference_6300", "Projects to reference"), + Enable_project_compilation: diag(6302, ts.DiagnosticCategory.Message, "Enable_project_compilation_6302", "Enable project compilation"), + Composite_projects_may_not_disable_declaration_emit: diag(6304, ts.DiagnosticCategory.Error, "Composite_projects_may_not_disable_declaration_emit_6304", "Composite projects may not disable declaration emit."), + Output_file_0_has_not_been_built_from_source_file_1: diag(6305, ts.DiagnosticCategory.Error, "Output_file_0_has_not_been_built_from_source_file_1_6305", "Output file '{0}' has not been built from source file '{1}'."), + Referenced_project_0_must_have_setting_composite_Colon_true: diag(6306, ts.DiagnosticCategory.Error, "Referenced_project_0_must_have_setting_composite_Colon_true_6306", "Referenced project '{0}' must have setting \"composite\": true."), + File_0_is_not_listed_within_the_file_list_of_project_1_Projects_must_list_all_files_or_use_an_include_pattern: diag(6307, ts.DiagnosticCategory.Error, "File_0_is_not_listed_within_the_file_list_of_project_1_Projects_must_list_all_files_or_use_an_includ_6307", "File '{0}' is not listed within the file list of project '{1}'. Projects must list all files or use an 'include' pattern."), + Cannot_prepend_project_0_because_it_does_not_have_outFile_set: diag(6308, ts.DiagnosticCategory.Error, "Cannot_prepend_project_0_because_it_does_not_have_outFile_set_6308", "Cannot prepend project '{0}' because it does not have 'outFile' set"), + Output_file_0_from_project_1_does_not_exist: diag(6309, ts.DiagnosticCategory.Error, "Output_file_0_from_project_1_does_not_exist_6309", "Output file '{0}' from project '{1}' does not exist"), + Project_0_is_out_of_date_because_oldest_output_1_is_older_than_newest_input_2: diag(6350, ts.DiagnosticCategory.Message, "Project_0_is_out_of_date_because_oldest_output_1_is_older_than_newest_input_2_6350", "Project '{0}' is out of date because oldest output '{1}' is older than newest input '{2}'"), + Project_0_is_up_to_date_because_newest_input_1_is_older_than_oldest_output_2: diag(6351, ts.DiagnosticCategory.Message, "Project_0_is_up_to_date_because_newest_input_1_is_older_than_oldest_output_2_6351", "Project '{0}' is up to date because newest input '{1}' is older than oldest output '{2}'"), + Project_0_is_out_of_date_because_output_file_1_does_not_exist: diag(6352, ts.DiagnosticCategory.Message, "Project_0_is_out_of_date_because_output_file_1_does_not_exist_6352", "Project '{0}' is out of date because output file '{1}' does not exist"), + Project_0_is_out_of_date_because_its_dependency_1_is_out_of_date: diag(6353, ts.DiagnosticCategory.Message, "Project_0_is_out_of_date_because_its_dependency_1_is_out_of_date_6353", "Project '{0}' is out of date because its dependency '{1}' is out of date"), + Project_0_is_up_to_date_with_d_ts_files_from_its_dependencies: diag(6354, ts.DiagnosticCategory.Message, "Project_0_is_up_to_date_with_d_ts_files_from_its_dependencies_6354", "Project '{0}' is up to date with .d.ts files from its dependencies"), + Projects_in_this_build_Colon_0: diag(6355, ts.DiagnosticCategory.Message, "Projects_in_this_build_Colon_0_6355", "Projects in this build: {0}"), + A_non_dry_build_would_delete_the_following_files_Colon_0: diag(6356, ts.DiagnosticCategory.Message, "A_non_dry_build_would_delete_the_following_files_Colon_0_6356", "A non-dry build would delete the following files: {0}"), + A_non_dry_build_would_build_project_0: diag(6357, ts.DiagnosticCategory.Message, "A_non_dry_build_would_build_project_0_6357", "A non-dry build would build project '{0}'"), + Building_project_0: diag(6358, ts.DiagnosticCategory.Message, "Building_project_0_6358", "Building project '{0}'..."), + Updating_output_timestamps_of_project_0: diag(6359, ts.DiagnosticCategory.Message, "Updating_output_timestamps_of_project_0_6359", "Updating output timestamps of project '{0}'..."), + delete_this_Project_0_is_up_to_date_because_it_was_previously_built: diag(6360, ts.DiagnosticCategory.Message, "delete_this_Project_0_is_up_to_date_because_it_was_previously_built_6360", "delete this - Project '{0}' is up to date because it was previously built"), + Project_0_is_up_to_date: diag(6361, ts.DiagnosticCategory.Message, "Project_0_is_up_to_date_6361", "Project '{0}' is up to date"), + Skipping_build_of_project_0_because_its_dependency_1_has_errors: diag(6362, ts.DiagnosticCategory.Message, "Skipping_build_of_project_0_because_its_dependency_1_has_errors_6362", "Skipping build of project '{0}' because its dependency '{1}' has errors"), + Project_0_can_t_be_built_because_its_dependency_1_has_errors: diag(6363, ts.DiagnosticCategory.Message, "Project_0_can_t_be_built_because_its_dependency_1_has_errors_6363", "Project '{0}' can't be built because its dependency '{1}' has errors"), + Build_one_or_more_projects_and_their_dependencies_if_out_of_date: diag(6364, ts.DiagnosticCategory.Message, "Build_one_or_more_projects_and_their_dependencies_if_out_of_date_6364", "Build one or more projects and their dependencies, if out of date"), + Delete_the_outputs_of_all_projects: diag(6365, ts.DiagnosticCategory.Message, "Delete_the_outputs_of_all_projects_6365", "Delete the outputs of all projects"), + Enable_verbose_logging: diag(6366, ts.DiagnosticCategory.Message, "Enable_verbose_logging_6366", "Enable verbose logging"), + Show_what_would_be_built_or_deleted_if_specified_with_clean: diag(6367, ts.DiagnosticCategory.Message, "Show_what_would_be_built_or_deleted_if_specified_with_clean_6367", "Show what would be built (or deleted, if specified with '--clean')"), + Build_all_projects_including_those_that_appear_to_be_up_to_date: diag(6368, ts.DiagnosticCategory.Message, "Build_all_projects_including_those_that_appear_to_be_up_to_date_6368", "Build all projects, including those that appear to be up to date"), + Option_build_must_be_the_first_command_line_argument: diag(6369, ts.DiagnosticCategory.Error, "Option_build_must_be_the_first_command_line_argument_6369", "Option '--build' must be the first command line argument."), + Options_0_and_1_cannot_be_combined: diag(6370, ts.DiagnosticCategory.Error, "Options_0_and_1_cannot_be_combined_6370", "Options '{0}' and '{1}' cannot be combined."), + Updating_unchanged_output_timestamps_of_project_0: diag(6371, ts.DiagnosticCategory.Message, "Updating_unchanged_output_timestamps_of_project_0_6371", "Updating unchanged output timestamps of project '{0}'..."), + Project_0_is_out_of_date_because_output_of_its_dependency_1_has_changed: diag(6372, ts.DiagnosticCategory.Message, "Project_0_is_out_of_date_because_output_of_its_dependency_1_has_changed_6372", "Project '{0}' is out of date because output of its dependency '{1}' has changed"), + Updating_output_of_project_0: diag(6373, ts.DiagnosticCategory.Message, "Updating_output_of_project_0_6373", "Updating output of project '{0}'..."), + A_non_dry_build_would_update_timestamps_for_output_of_project_0: diag(6374, ts.DiagnosticCategory.Message, "A_non_dry_build_would_update_timestamps_for_output_of_project_0_6374", "A non-dry build would update timestamps for output of project '{0}'"), + A_non_dry_build_would_update_output_of_project_0: diag(6375, ts.DiagnosticCategory.Message, "A_non_dry_build_would_update_output_of_project_0_6375", "A non-dry build would update output of project '{0}'"), + Cannot_update_output_of_project_0_because_there_was_error_reading_file_1: diag(6376, ts.DiagnosticCategory.Message, "Cannot_update_output_of_project_0_because_there_was_error_reading_file_1_6376", "Cannot update output of project '{0}' because there was error reading file '{1}'"), + Cannot_write_file_0_because_it_will_overwrite_tsbuildinfo_file_generated_by_referenced_project_1: diag(6377, ts.DiagnosticCategory.Error, "Cannot_write_file_0_because_it_will_overwrite_tsbuildinfo_file_generated_by_referenced_project_1_6377", "Cannot write file '{0}' because it will overwrite '.tsbuildinfo' file generated by referenced project '{1}'"), + Enable_incremental_compilation: diag(6378, ts.DiagnosticCategory.Message, "Enable_incremental_compilation_6378", "Enable incremental compilation"), + Composite_projects_may_not_disable_incremental_compilation: diag(6379, ts.DiagnosticCategory.Error, "Composite_projects_may_not_disable_incremental_compilation_6379", "Composite projects may not disable incremental compilation."), + Specify_file_to_store_incremental_compilation_information: diag(6380, ts.DiagnosticCategory.Message, "Specify_file_to_store_incremental_compilation_information_6380", "Specify file to store incremental compilation information"), + Project_0_is_out_of_date_because_output_for_it_was_generated_with_version_1_that_differs_with_current_version_2: diag(6381, ts.DiagnosticCategory.Message, "Project_0_is_out_of_date_because_output_for_it_was_generated_with_version_1_that_differs_with_curren_6381", "Project '{0}' is out of date because output for it was generated with version '{1}' that differs with current version '{2}'"), + Skipping_build_of_project_0_because_its_dependency_1_was_not_built: diag(6382, ts.DiagnosticCategory.Message, "Skipping_build_of_project_0_because_its_dependency_1_was_not_built_6382", "Skipping build of project '{0}' because its dependency '{1}' was not built"), + Project_0_can_t_be_built_because_its_dependency_1_was_not_built: diag(6383, ts.DiagnosticCategory.Message, "Project_0_can_t_be_built_because_its_dependency_1_was_not_built_6383", "Project '{0}' can't be built because its dependency '{1}' was not built"), + Have_recompiles_in_incremental_and_watch_assume_that_changes_within_a_file_will_only_affect_files_directly_depending_on_it: diag(6384, ts.DiagnosticCategory.Message, "Have_recompiles_in_incremental_and_watch_assume_that_changes_within_a_file_will_only_affect_files_di_6384", "Have recompiles in '--incremental' and '--watch' assume that changes within a file will only affect files directly depending on it."), + The_expected_type_comes_from_property_0_which_is_declared_here_on_type_1: diag(6500, ts.DiagnosticCategory.Message, "The_expected_type_comes_from_property_0_which_is_declared_here_on_type_1_6500", "The expected type comes from property '{0}' which is declared here on type '{1}'"), + The_expected_type_comes_from_this_index_signature: diag(6501, ts.DiagnosticCategory.Message, "The_expected_type_comes_from_this_index_signature_6501", "The expected type comes from this index signature."), + The_expected_type_comes_from_the_return_type_of_this_signature: diag(6502, ts.DiagnosticCategory.Message, "The_expected_type_comes_from_the_return_type_of_this_signature_6502", "The expected type comes from the return type of this signature."), + Print_names_of_files_that_are_part_of_the_compilation_and_then_stop_processing: diag(6503, ts.DiagnosticCategory.Message, "Print_names_of_files_that_are_part_of_the_compilation_and_then_stop_processing_6503", "Print names of files that are part of the compilation and then stop processing."), + File_0_is_a_JavaScript_file_Did_you_mean_to_enable_the_allowJs_option: diag(6504, ts.DiagnosticCategory.Error, "File_0_is_a_JavaScript_file_Did_you_mean_to_enable_the_allowJs_option_6504", "File '{0}' is a JavaScript file. Did you mean to enable the 'allowJs' option?"), + Variable_0_implicitly_has_an_1_type: diag(7005, ts.DiagnosticCategory.Error, "Variable_0_implicitly_has_an_1_type_7005", "Variable '{0}' implicitly has an '{1}' type."), + Parameter_0_implicitly_has_an_1_type: diag(7006, ts.DiagnosticCategory.Error, "Parameter_0_implicitly_has_an_1_type_7006", "Parameter '{0}' implicitly has an '{1}' type."), + Member_0_implicitly_has_an_1_type: diag(7008, ts.DiagnosticCategory.Error, "Member_0_implicitly_has_an_1_type_7008", "Member '{0}' implicitly has an '{1}' type."), + new_expression_whose_target_lacks_a_construct_signature_implicitly_has_an_any_type: diag(7009, ts.DiagnosticCategory.Error, "new_expression_whose_target_lacks_a_construct_signature_implicitly_has_an_any_type_7009", "'new' expression, whose target lacks a construct signature, implicitly has an 'any' type."), + _0_which_lacks_return_type_annotation_implicitly_has_an_1_return_type: diag(7010, ts.DiagnosticCategory.Error, "_0_which_lacks_return_type_annotation_implicitly_has_an_1_return_type_7010", "'{0}', which lacks return-type annotation, implicitly has an '{1}' return type."), + Function_expression_which_lacks_return_type_annotation_implicitly_has_an_0_return_type: diag(7011, ts.DiagnosticCategory.Error, "Function_expression_which_lacks_return_type_annotation_implicitly_has_an_0_return_type_7011", "Function expression, which lacks return-type annotation, implicitly has an '{0}' return type."), + Construct_signature_which_lacks_return_type_annotation_implicitly_has_an_any_return_type: diag(7013, ts.DiagnosticCategory.Error, "Construct_signature_which_lacks_return_type_annotation_implicitly_has_an_any_return_type_7013", "Construct signature, which lacks return-type annotation, implicitly has an 'any' return type."), + Function_type_which_lacks_return_type_annotation_implicitly_has_an_0_return_type: diag(7014, ts.DiagnosticCategory.Error, "Function_type_which_lacks_return_type_annotation_implicitly_has_an_0_return_type_7014", "Function type, which lacks return-type annotation, implicitly has an '{0}' return type."), + Element_implicitly_has_an_any_type_because_index_expression_is_not_of_type_number: diag(7015, ts.DiagnosticCategory.Error, "Element_implicitly_has_an_any_type_because_index_expression_is_not_of_type_number_7015", "Element implicitly has an 'any' type because index expression is not of type 'number'."), + Could_not_find_a_declaration_file_for_module_0_1_implicitly_has_an_any_type: diag(7016, ts.DiagnosticCategory.Error, "Could_not_find_a_declaration_file_for_module_0_1_implicitly_has_an_any_type_7016", "Could not find a declaration file for module '{0}'. '{1}' implicitly has an 'any' type."), + Element_implicitly_has_an_any_type_because_type_0_has_no_index_signature: diag(7017, ts.DiagnosticCategory.Error, "Element_implicitly_has_an_any_type_because_type_0_has_no_index_signature_7017", "Element implicitly has an 'any' type because type '{0}' has no index signature."), + Object_literal_s_property_0_implicitly_has_an_1_type: diag(7018, ts.DiagnosticCategory.Error, "Object_literal_s_property_0_implicitly_has_an_1_type_7018", "Object literal's property '{0}' implicitly has an '{1}' type."), + Rest_parameter_0_implicitly_has_an_any_type: diag(7019, ts.DiagnosticCategory.Error, "Rest_parameter_0_implicitly_has_an_any_type_7019", "Rest parameter '{0}' implicitly has an 'any[]' type."), + Call_signature_which_lacks_return_type_annotation_implicitly_has_an_any_return_type: diag(7020, ts.DiagnosticCategory.Error, "Call_signature_which_lacks_return_type_annotation_implicitly_has_an_any_return_type_7020", "Call signature, which lacks return-type annotation, implicitly has an 'any' return type."), + _0_implicitly_has_type_any_because_it_does_not_have_a_type_annotation_and_is_referenced_directly_or_indirectly_in_its_own_initializer: diag(7022, ts.DiagnosticCategory.Error, "_0_implicitly_has_type_any_because_it_does_not_have_a_type_annotation_and_is_referenced_directly_or__7022", "'{0}' implicitly has type 'any' because it does not have a type annotation and is referenced directly or indirectly in its own initializer."), + _0_implicitly_has_return_type_any_because_it_does_not_have_a_return_type_annotation_and_is_referenced_directly_or_indirectly_in_one_of_its_return_expressions: diag(7023, ts.DiagnosticCategory.Error, "_0_implicitly_has_return_type_any_because_it_does_not_have_a_return_type_annotation_and_is_reference_7023", "'{0}' implicitly has return type 'any' because it does not have a return type annotation and is referenced directly or indirectly in one of its return expressions."), + Function_implicitly_has_return_type_any_because_it_does_not_have_a_return_type_annotation_and_is_referenced_directly_or_indirectly_in_one_of_its_return_expressions: diag(7024, ts.DiagnosticCategory.Error, "Function_implicitly_has_return_type_any_because_it_does_not_have_a_return_type_annotation_and_is_ref_7024", "Function implicitly has return type 'any' because it does not have a return type annotation and is referenced directly or indirectly in one of its return expressions."), + Generator_implicitly_has_yield_type_0_because_it_does_not_yield_any_values_Consider_supplying_a_return_type_annotation: diag(7025, ts.DiagnosticCategory.Error, "Generator_implicitly_has_yield_type_0_because_it_does_not_yield_any_values_Consider_supplying_a_retu_7025", "Generator implicitly has yield type '{0}' because it does not yield any values. Consider supplying a return type annotation."), + JSX_element_implicitly_has_type_any_because_no_interface_JSX_0_exists: diag(7026, ts.DiagnosticCategory.Error, "JSX_element_implicitly_has_type_any_because_no_interface_JSX_0_exists_7026", "JSX element implicitly has type 'any' because no interface 'JSX.{0}' exists."), + Unreachable_code_detected: diag(7027, ts.DiagnosticCategory.Error, "Unreachable_code_detected_7027", "Unreachable code detected.", /*reportsUnnecessary*/ true), + Unused_label: diag(7028, ts.DiagnosticCategory.Error, "Unused_label_7028", "Unused label.", /*reportsUnnecessary*/ true), + Fallthrough_case_in_switch: diag(7029, ts.DiagnosticCategory.Error, "Fallthrough_case_in_switch_7029", "Fallthrough case in switch."), + Not_all_code_paths_return_a_value: diag(7030, ts.DiagnosticCategory.Error, "Not_all_code_paths_return_a_value_7030", "Not all code paths return a value."), + Binding_element_0_implicitly_has_an_1_type: diag(7031, ts.DiagnosticCategory.Error, "Binding_element_0_implicitly_has_an_1_type_7031", "Binding element '{0}' implicitly has an '{1}' type."), + Property_0_implicitly_has_type_any_because_its_set_accessor_lacks_a_parameter_type_annotation: diag(7032, ts.DiagnosticCategory.Error, "Property_0_implicitly_has_type_any_because_its_set_accessor_lacks_a_parameter_type_annotation_7032", "Property '{0}' implicitly has type 'any', because its set accessor lacks a parameter type annotation."), + Property_0_implicitly_has_type_any_because_its_get_accessor_lacks_a_return_type_annotation: diag(7033, ts.DiagnosticCategory.Error, "Property_0_implicitly_has_type_any_because_its_get_accessor_lacks_a_return_type_annotation_7033", "Property '{0}' implicitly has type 'any', because its get accessor lacks a return type annotation."), + Variable_0_implicitly_has_type_1_in_some_locations_where_its_type_cannot_be_determined: diag(7034, ts.DiagnosticCategory.Error, "Variable_0_implicitly_has_type_1_in_some_locations_where_its_type_cannot_be_determined_7034", "Variable '{0}' implicitly has type '{1}' in some locations where its type cannot be determined."), + Try_npm_install_types_Slash_1_if_it_exists_or_add_a_new_declaration_d_ts_file_containing_declare_module_0: diag(7035, ts.DiagnosticCategory.Error, "Try_npm_install_types_Slash_1_if_it_exists_or_add_a_new_declaration_d_ts_file_containing_declare_mod_7035", "Try `npm install @types/{1}` if it exists or add a new declaration (.d.ts) file containing `declare module '{0}';`"), + Dynamic_import_s_specifier_must_be_of_type_string_but_here_has_type_0: diag(7036, ts.DiagnosticCategory.Error, "Dynamic_import_s_specifier_must_be_of_type_string_but_here_has_type_0_7036", "Dynamic import's specifier must be of type 'string', but here has type '{0}'."), + Enables_emit_interoperability_between_CommonJS_and_ES_Modules_via_creation_of_namespace_objects_for_all_imports_Implies_allowSyntheticDefaultImports: diag(7037, ts.DiagnosticCategory.Message, "Enables_emit_interoperability_between_CommonJS_and_ES_Modules_via_creation_of_namespace_objects_for__7037", "Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'."), + Type_originates_at_this_import_A_namespace_style_import_cannot_be_called_or_constructed_and_will_cause_a_failure_at_runtime_Consider_using_a_default_import_or_import_require_here_instead: diag(7038, ts.DiagnosticCategory.Message, "Type_originates_at_this_import_A_namespace_style_import_cannot_be_called_or_constructed_and_will_cau_7038", "Type originates at this import. A namespace-style import cannot be called or constructed, and will cause a failure at runtime. Consider using a default import or import require here instead."), + Mapped_object_type_implicitly_has_an_any_template_type: diag(7039, ts.DiagnosticCategory.Error, "Mapped_object_type_implicitly_has_an_any_template_type_7039", "Mapped object type implicitly has an 'any' template type."), + If_the_0_package_actually_exposes_this_module_consider_sending_a_pull_request_to_amend_https_Colon_Slash_Slashgithub_com_SlashDefinitelyTyped_SlashDefinitelyTyped_Slashtree_Slashmaster_Slashtypes_Slash_1: diag(7040, ts.DiagnosticCategory.Error, "If_the_0_package_actually_exposes_this_module_consider_sending_a_pull_request_to_amend_https_Colon_S_7040", "If the '{0}' package actually exposes this module, consider sending a pull request to amend 'https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/{1}`"), + The_containing_arrow_function_captures_the_global_value_of_this: diag(7041, ts.DiagnosticCategory.Error, "The_containing_arrow_function_captures_the_global_value_of_this_7041", "The containing arrow function captures the global value of 'this'."), + Module_0_was_resolved_to_1_but_resolveJsonModule_is_not_used: diag(7042, ts.DiagnosticCategory.Error, "Module_0_was_resolved_to_1_but_resolveJsonModule_is_not_used_7042", "Module '{0}' was resolved to '{1}', but '--resolveJsonModule' is not used."), + Variable_0_implicitly_has_an_1_type_but_a_better_type_may_be_inferred_from_usage: diag(7043, ts.DiagnosticCategory.Suggestion, "Variable_0_implicitly_has_an_1_type_but_a_better_type_may_be_inferred_from_usage_7043", "Variable '{0}' implicitly has an '{1}' type, but a better type may be inferred from usage."), + Parameter_0_implicitly_has_an_1_type_but_a_better_type_may_be_inferred_from_usage: diag(7044, ts.DiagnosticCategory.Suggestion, "Parameter_0_implicitly_has_an_1_type_but_a_better_type_may_be_inferred_from_usage_7044", "Parameter '{0}' implicitly has an '{1}' type, but a better type may be inferred from usage."), + Member_0_implicitly_has_an_1_type_but_a_better_type_may_be_inferred_from_usage: diag(7045, ts.DiagnosticCategory.Suggestion, "Member_0_implicitly_has_an_1_type_but_a_better_type_may_be_inferred_from_usage_7045", "Member '{0}' implicitly has an '{1}' type, but a better type may be inferred from usage."), + Variable_0_implicitly_has_type_1_in_some_locations_but_a_better_type_may_be_inferred_from_usage: diag(7046, ts.DiagnosticCategory.Suggestion, "Variable_0_implicitly_has_type_1_in_some_locations_but_a_better_type_may_be_inferred_from_usage_7046", "Variable '{0}' implicitly has type '{1}' in some locations, but a better type may be inferred from usage."), + Rest_parameter_0_implicitly_has_an_any_type_but_a_better_type_may_be_inferred_from_usage: diag(7047, ts.DiagnosticCategory.Suggestion, "Rest_parameter_0_implicitly_has_an_any_type_but_a_better_type_may_be_inferred_from_usage_7047", "Rest parameter '{0}' implicitly has an 'any[]' type, but a better type may be inferred from usage."), + Property_0_implicitly_has_type_any_but_a_better_type_for_its_get_accessor_may_be_inferred_from_usage: diag(7048, ts.DiagnosticCategory.Suggestion, "Property_0_implicitly_has_type_any_but_a_better_type_for_its_get_accessor_may_be_inferred_from_usage_7048", "Property '{0}' implicitly has type 'any', but a better type for its get accessor may be inferred from usage."), + Property_0_implicitly_has_type_any_but_a_better_type_for_its_set_accessor_may_be_inferred_from_usage: diag(7049, ts.DiagnosticCategory.Suggestion, "Property_0_implicitly_has_type_any_but_a_better_type_for_its_set_accessor_may_be_inferred_from_usage_7049", "Property '{0}' implicitly has type 'any', but a better type for its set accessor may be inferred from usage."), + _0_implicitly_has_an_1_return_type_but_a_better_type_may_be_inferred_from_usage: diag(7050, ts.DiagnosticCategory.Suggestion, "_0_implicitly_has_an_1_return_type_but_a_better_type_may_be_inferred_from_usage_7050", "'{0}' implicitly has an '{1}' return type, but a better type may be inferred from usage."), + Parameter_has_a_name_but_no_type_Did_you_mean_0_Colon_1: diag(7051, ts.DiagnosticCategory.Error, "Parameter_has_a_name_but_no_type_Did_you_mean_0_Colon_1_7051", "Parameter has a name but no type. Did you mean '{0}: {1}'?"), + Element_implicitly_has_an_any_type_because_type_0_has_no_index_signature_Did_you_mean_to_call_1: diag(7052, ts.DiagnosticCategory.Error, "Element_implicitly_has_an_any_type_because_type_0_has_no_index_signature_Did_you_mean_to_call_1_7052", "Element implicitly has an 'any' type because type '{0}' has no index signature. Did you mean to call '{1}'?"), + Element_implicitly_has_an_any_type_because_expression_of_type_0_can_t_be_used_to_index_type_1: diag(7053, ts.DiagnosticCategory.Error, "Element_implicitly_has_an_any_type_because_expression_of_type_0_can_t_be_used_to_index_type_1_7053", "Element implicitly has an 'any' type because expression of type '{0}' can't be used to index type '{1}'."), + No_index_signature_with_a_parameter_of_type_0_was_found_on_type_1: diag(7054, ts.DiagnosticCategory.Error, "No_index_signature_with_a_parameter_of_type_0_was_found_on_type_1_7054", "No index signature with a parameter of type '{0}' was found on type '{1}'."), + _0_which_lacks_return_type_annotation_implicitly_has_an_1_yield_type: diag(7055, ts.DiagnosticCategory.Error, "_0_which_lacks_return_type_annotation_implicitly_has_an_1_yield_type_7055", "'{0}', which lacks return-type annotation, implicitly has an '{1}' yield type."), + You_cannot_rename_this_element: diag(8000, ts.DiagnosticCategory.Error, "You_cannot_rename_this_element_8000", "You cannot rename this element."), + You_cannot_rename_elements_that_are_defined_in_the_standard_TypeScript_library: diag(8001, ts.DiagnosticCategory.Error, "You_cannot_rename_elements_that_are_defined_in_the_standard_TypeScript_library_8001", "You cannot rename elements that are defined in the standard TypeScript library."), + import_can_only_be_used_in_TypeScript_files: diag(8002, ts.DiagnosticCategory.Error, "import_can_only_be_used_in_TypeScript_files_8002", "'import ... =' can only be used in TypeScript files."), + export_can_only_be_used_in_TypeScript_files: diag(8003, ts.DiagnosticCategory.Error, "export_can_only_be_used_in_TypeScript_files_8003", "'export =' can only be used in TypeScript files."), + Type_parameter_declarations_can_only_be_used_in_TypeScript_files: diag(8004, ts.DiagnosticCategory.Error, "Type_parameter_declarations_can_only_be_used_in_TypeScript_files_8004", "Type parameter declarations can only be used in TypeScript files."), + implements_clauses_can_only_be_used_in_TypeScript_files: diag(8005, ts.DiagnosticCategory.Error, "implements_clauses_can_only_be_used_in_TypeScript_files_8005", "'implements' clauses can only be used in TypeScript files."), + _0_declarations_can_only_be_used_in_TypeScript_files: diag(8006, ts.DiagnosticCategory.Error, "_0_declarations_can_only_be_used_in_TypeScript_files_8006", "'{0}' declarations can only be used in TypeScript files."), + Type_aliases_can_only_be_used_in_TypeScript_files: diag(8008, ts.DiagnosticCategory.Error, "Type_aliases_can_only_be_used_in_TypeScript_files_8008", "Type aliases can only be used in TypeScript files."), + The_0_modifier_can_only_be_used_in_TypeScript_files: diag(8009, ts.DiagnosticCategory.Error, "The_0_modifier_can_only_be_used_in_TypeScript_files_8009", "The '{0}' modifier can only be used in TypeScript files."), + Type_annotations_can_only_be_used_in_TypeScript_files: diag(8010, ts.DiagnosticCategory.Error, "Type_annotations_can_only_be_used_in_TypeScript_files_8010", "Type annotations can only be used in TypeScript files."), + Type_arguments_can_only_be_used_in_TypeScript_files: diag(8011, ts.DiagnosticCategory.Error, "Type_arguments_can_only_be_used_in_TypeScript_files_8011", "Type arguments can only be used in TypeScript files."), + Parameter_modifiers_can_only_be_used_in_TypeScript_files: diag(8012, ts.DiagnosticCategory.Error, "Parameter_modifiers_can_only_be_used_in_TypeScript_files_8012", "Parameter modifiers can only be used in TypeScript files."), + Non_null_assertions_can_only_be_used_in_TypeScript_files: diag(8013, ts.DiagnosticCategory.Error, "Non_null_assertions_can_only_be_used_in_TypeScript_files_8013", "Non-null assertions can only be used in TypeScript files."), + Type_assertion_expressions_can_only_be_used_in_TypeScript_files: diag(8016, ts.DiagnosticCategory.Error, "Type_assertion_expressions_can_only_be_used_in_TypeScript_files_8016", "Type assertion expressions can only be used in TypeScript files."), + Octal_literal_types_must_use_ES2015_syntax_Use_the_syntax_0: diag(8017, ts.DiagnosticCategory.Error, "Octal_literal_types_must_use_ES2015_syntax_Use_the_syntax_0_8017", "Octal literal types must use ES2015 syntax. Use the syntax '{0}'."), + Octal_literals_are_not_allowed_in_enums_members_initializer_Use_the_syntax_0: diag(8018, ts.DiagnosticCategory.Error, "Octal_literals_are_not_allowed_in_enums_members_initializer_Use_the_syntax_0_8018", "Octal literals are not allowed in enums members initializer. Use the syntax '{0}'."), + Report_errors_in_js_files: diag(8019, ts.DiagnosticCategory.Message, "Report_errors_in_js_files_8019", "Report errors in .js files."), + JSDoc_types_can_only_be_used_inside_documentation_comments: diag(8020, ts.DiagnosticCategory.Error, "JSDoc_types_can_only_be_used_inside_documentation_comments_8020", "JSDoc types can only be used inside documentation comments."), + JSDoc_typedef_tag_should_either_have_a_type_annotation_or_be_followed_by_property_or_member_tags: diag(8021, ts.DiagnosticCategory.Error, "JSDoc_typedef_tag_should_either_have_a_type_annotation_or_be_followed_by_property_or_member_tags_8021", "JSDoc '@typedef' tag should either have a type annotation or be followed by '@property' or '@member' tags."), + JSDoc_0_is_not_attached_to_a_class: diag(8022, ts.DiagnosticCategory.Error, "JSDoc_0_is_not_attached_to_a_class_8022", "JSDoc '@{0}' is not attached to a class."), + JSDoc_0_1_does_not_match_the_extends_2_clause: diag(8023, ts.DiagnosticCategory.Error, "JSDoc_0_1_does_not_match_the_extends_2_clause_8023", "JSDoc '@{0} {1}' does not match the 'extends {2}' clause."), + JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name: diag(8024, ts.DiagnosticCategory.Error, "JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_8024", "JSDoc '@param' tag has name '{0}', but there is no parameter with that name."), + Class_declarations_cannot_have_more_than_one_augments_or_extends_tag: diag(8025, ts.DiagnosticCategory.Error, "Class_declarations_cannot_have_more_than_one_augments_or_extends_tag_8025", "Class declarations cannot have more than one `@augments` or `@extends` tag."), + Expected_0_type_arguments_provide_these_with_an_extends_tag: diag(8026, ts.DiagnosticCategory.Error, "Expected_0_type_arguments_provide_these_with_an_extends_tag_8026", "Expected {0} type arguments; provide these with an '@extends' tag."), + Expected_0_1_type_arguments_provide_these_with_an_extends_tag: diag(8027, ts.DiagnosticCategory.Error, "Expected_0_1_type_arguments_provide_these_with_an_extends_tag_8027", "Expected {0}-{1} type arguments; provide these with an '@extends' tag."), + JSDoc_may_only_appear_in_the_last_parameter_of_a_signature: diag(8028, ts.DiagnosticCategory.Error, "JSDoc_may_only_appear_in_the_last_parameter_of_a_signature_8028", "JSDoc '...' may only appear in the last parameter of a signature."), + JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_It_would_match_arguments_if_it_had_an_array_type: diag(8029, ts.DiagnosticCategory.Error, "JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_It_would_match_arguments_if_it_h_8029", "JSDoc '@param' tag has name '{0}', but there is no parameter with that name. It would match 'arguments' if it had an array type."), + The_type_of_a_function_declaration_must_match_the_function_s_signature: diag(8030, ts.DiagnosticCategory.Error, "The_type_of_a_function_declaration_must_match_the_function_s_signature_8030", "The type of a function declaration must match the function's signature."), + You_cannot_rename_a_module_via_a_global_import: diag(8031, ts.DiagnosticCategory.Error, "You_cannot_rename_a_module_via_a_global_import_8031", "You cannot rename a module via a global import."), + Qualified_name_0_is_not_allowed_without_a_leading_param_object_1: diag(8032, ts.DiagnosticCategory.Error, "Qualified_name_0_is_not_allowed_without_a_leading_param_object_1_8032", "Qualified name '{0}' is not allowed without a leading '@param {object} {1}'."), + Only_identifiers_Slashqualified_names_with_optional_type_arguments_are_currently_supported_in_a_class_extends_clause: diag(9002, ts.DiagnosticCategory.Error, "Only_identifiers_Slashqualified_names_with_optional_type_arguments_are_currently_supported_in_a_clas_9002", "Only identifiers/qualified-names with optional type arguments are currently supported in a class 'extends' clause."), + class_expressions_are_not_currently_supported: diag(9003, ts.DiagnosticCategory.Error, "class_expressions_are_not_currently_supported_9003", "'class' expressions are not currently supported."), + Language_service_is_disabled: diag(9004, ts.DiagnosticCategory.Error, "Language_service_is_disabled_9004", "Language service is disabled."), + Declaration_emit_for_this_file_requires_using_private_name_0_An_explicit_type_annotation_may_unblock_declaration_emit: diag(9005, ts.DiagnosticCategory.Error, "Declaration_emit_for_this_file_requires_using_private_name_0_An_explicit_type_annotation_may_unblock_9005", "Declaration emit for this file requires using private name '{0}'. An explicit type annotation may unblock declaration emit."), + Declaration_emit_for_this_file_requires_using_private_name_0_from_module_1_An_explicit_type_annotation_may_unblock_declaration_emit: diag(9006, ts.DiagnosticCategory.Error, "Declaration_emit_for_this_file_requires_using_private_name_0_from_module_1_An_explicit_type_annotati_9006", "Declaration emit for this file requires using private name '{0}' from module '{1}'. An explicit type annotation may unblock declaration emit."), + JSX_attributes_must_only_be_assigned_a_non_empty_expression: diag(17000, ts.DiagnosticCategory.Error, "JSX_attributes_must_only_be_assigned_a_non_empty_expression_17000", "JSX attributes must only be assigned a non-empty 'expression'."), + JSX_elements_cannot_have_multiple_attributes_with_the_same_name: diag(17001, ts.DiagnosticCategory.Error, "JSX_elements_cannot_have_multiple_attributes_with_the_same_name_17001", "JSX elements cannot have multiple attributes with the same name."), + Expected_corresponding_JSX_closing_tag_for_0: diag(17002, ts.DiagnosticCategory.Error, "Expected_corresponding_JSX_closing_tag_for_0_17002", "Expected corresponding JSX closing tag for '{0}'."), + JSX_attribute_expected: diag(17003, ts.DiagnosticCategory.Error, "JSX_attribute_expected_17003", "JSX attribute expected."), + Cannot_use_JSX_unless_the_jsx_flag_is_provided: diag(17004, ts.DiagnosticCategory.Error, "Cannot_use_JSX_unless_the_jsx_flag_is_provided_17004", "Cannot use JSX unless the '--jsx' flag is provided."), + A_constructor_cannot_contain_a_super_call_when_its_class_extends_null: diag(17005, ts.DiagnosticCategory.Error, "A_constructor_cannot_contain_a_super_call_when_its_class_extends_null_17005", "A constructor cannot contain a 'super' call when its class extends 'null'."), + An_unary_expression_with_the_0_operator_is_not_allowed_in_the_left_hand_side_of_an_exponentiation_expression_Consider_enclosing_the_expression_in_parentheses: diag(17006, ts.DiagnosticCategory.Error, "An_unary_expression_with_the_0_operator_is_not_allowed_in_the_left_hand_side_of_an_exponentiation_ex_17006", "An unary expression with the '{0}' operator is not allowed in the left-hand side of an exponentiation expression. Consider enclosing the expression in parentheses."), + A_type_assertion_expression_is_not_allowed_in_the_left_hand_side_of_an_exponentiation_expression_Consider_enclosing_the_expression_in_parentheses: diag(17007, ts.DiagnosticCategory.Error, "A_type_assertion_expression_is_not_allowed_in_the_left_hand_side_of_an_exponentiation_expression_Con_17007", "A type assertion expression is not allowed in the left-hand side of an exponentiation expression. Consider enclosing the expression in parentheses."), + JSX_element_0_has_no_corresponding_closing_tag: diag(17008, ts.DiagnosticCategory.Error, "JSX_element_0_has_no_corresponding_closing_tag_17008", "JSX element '{0}' has no corresponding closing tag."), + super_must_be_called_before_accessing_this_in_the_constructor_of_a_derived_class: diag(17009, ts.DiagnosticCategory.Error, "super_must_be_called_before_accessing_this_in_the_constructor_of_a_derived_class_17009", "'super' must be called before accessing 'this' in the constructor of a derived class."), + Unknown_type_acquisition_option_0: diag(17010, ts.DiagnosticCategory.Error, "Unknown_type_acquisition_option_0_17010", "Unknown type acquisition option '{0}'."), + super_must_be_called_before_accessing_a_property_of_super_in_the_constructor_of_a_derived_class: diag(17011, ts.DiagnosticCategory.Error, "super_must_be_called_before_accessing_a_property_of_super_in_the_constructor_of_a_derived_class_17011", "'super' must be called before accessing a property of 'super' in the constructor of a derived class."), + _0_is_not_a_valid_meta_property_for_keyword_1_Did_you_mean_2: diag(17012, ts.DiagnosticCategory.Error, "_0_is_not_a_valid_meta_property_for_keyword_1_Did_you_mean_2_17012", "'{0}' is not a valid meta-property for keyword '{1}'. Did you mean '{2}'?"), + Meta_property_0_is_only_allowed_in_the_body_of_a_function_declaration_function_expression_or_constructor: diag(17013, ts.DiagnosticCategory.Error, "Meta_property_0_is_only_allowed_in_the_body_of_a_function_declaration_function_expression_or_constru_17013", "Meta-property '{0}' is only allowed in the body of a function declaration, function expression, or constructor."), + JSX_fragment_has_no_corresponding_closing_tag: diag(17014, ts.DiagnosticCategory.Error, "JSX_fragment_has_no_corresponding_closing_tag_17014", "JSX fragment has no corresponding closing tag."), + Expected_corresponding_closing_tag_for_JSX_fragment: diag(17015, ts.DiagnosticCategory.Error, "Expected_corresponding_closing_tag_for_JSX_fragment_17015", "Expected corresponding closing tag for JSX fragment."), + JSX_fragment_is_not_supported_when_using_jsxFactory: diag(17016, ts.DiagnosticCategory.Error, "JSX_fragment_is_not_supported_when_using_jsxFactory_17016", "JSX fragment is not supported when using --jsxFactory"), + JSX_fragment_is_not_supported_when_using_an_inline_JSX_factory_pragma: diag(17017, ts.DiagnosticCategory.Error, "JSX_fragment_is_not_supported_when_using_an_inline_JSX_factory_pragma_17017", "JSX fragment is not supported when using an inline JSX factory pragma"), + Unknown_type_acquisition_option_0_Did_you_mean_1: diag(17018, ts.DiagnosticCategory.Error, "Unknown_type_acquisition_option_0_Did_you_mean_1_17018", "Unknown type acquisition option '{0}'. Did you mean '{1}'?"), + Circularity_detected_while_resolving_configuration_Colon_0: diag(18000, ts.DiagnosticCategory.Error, "Circularity_detected_while_resolving_configuration_Colon_0_18000", "Circularity detected while resolving configuration: {0}"), + A_path_in_an_extends_option_must_be_relative_or_rooted_but_0_is_not: diag(18001, ts.DiagnosticCategory.Error, "A_path_in_an_extends_option_must_be_relative_or_rooted_but_0_is_not_18001", "A path in an 'extends' option must be relative or rooted, but '{0}' is not."), + The_files_list_in_config_file_0_is_empty: diag(18002, ts.DiagnosticCategory.Error, "The_files_list_in_config_file_0_is_empty_18002", "The 'files' list in config file '{0}' is empty."), + No_inputs_were_found_in_config_file_0_Specified_include_paths_were_1_and_exclude_paths_were_2: diag(18003, ts.DiagnosticCategory.Error, "No_inputs_were_found_in_config_file_0_Specified_include_paths_were_1_and_exclude_paths_were_2_18003", "No inputs were found in config file '{0}'. Specified 'include' paths were '{1}' and 'exclude' paths were '{2}'."), + File_is_a_CommonJS_module_it_may_be_converted_to_an_ES6_module: diag(80001, ts.DiagnosticCategory.Suggestion, "File_is_a_CommonJS_module_it_may_be_converted_to_an_ES6_module_80001", "File is a CommonJS module; it may be converted to an ES6 module."), + This_constructor_function_may_be_converted_to_a_class_declaration: diag(80002, ts.DiagnosticCategory.Suggestion, "This_constructor_function_may_be_converted_to_a_class_declaration_80002", "This constructor function may be converted to a class declaration."), + Import_may_be_converted_to_a_default_import: diag(80003, ts.DiagnosticCategory.Suggestion, "Import_may_be_converted_to_a_default_import_80003", "Import may be converted to a default import."), + JSDoc_types_may_be_moved_to_TypeScript_types: diag(80004, ts.DiagnosticCategory.Suggestion, "JSDoc_types_may_be_moved_to_TypeScript_types_80004", "JSDoc types may be moved to TypeScript types."), + require_call_may_be_converted_to_an_import: diag(80005, ts.DiagnosticCategory.Suggestion, "require_call_may_be_converted_to_an_import_80005", "'require' call may be converted to an import."), + This_may_be_converted_to_an_async_function: diag(80006, ts.DiagnosticCategory.Suggestion, "This_may_be_converted_to_an_async_function_80006", "This may be converted to an async function."), + await_has_no_effect_on_the_type_of_this_expression: diag(80007, ts.DiagnosticCategory.Suggestion, "await_has_no_effect_on_the_type_of_this_expression_80007", "'await' has no effect on the type of this expression."), + Numeric_literals_with_absolute_values_equal_to_2_53_or_greater_are_too_large_to_be_represented_accurately_as_integers: diag(80008, ts.DiagnosticCategory.Suggestion, "Numeric_literals_with_absolute_values_equal_to_2_53_or_greater_are_too_large_to_be_represented_accur_80008", "Numeric literals with absolute values equal to 2^53 or greater are too large to be represented accurately as integers."), + Add_missing_super_call: diag(90001, ts.DiagnosticCategory.Message, "Add_missing_super_call_90001", "Add missing 'super()' call"), + Make_super_call_the_first_statement_in_the_constructor: diag(90002, ts.DiagnosticCategory.Message, "Make_super_call_the_first_statement_in_the_constructor_90002", "Make 'super()' call the first statement in the constructor"), + Change_extends_to_implements: diag(90003, ts.DiagnosticCategory.Message, "Change_extends_to_implements_90003", "Change 'extends' to 'implements'"), + Remove_unused_declaration_for_Colon_0: diag(90004, ts.DiagnosticCategory.Message, "Remove_unused_declaration_for_Colon_0_90004", "Remove unused declaration for: '{0}'"), + Remove_import_from_0: diag(90005, ts.DiagnosticCategory.Message, "Remove_import_from_0_90005", "Remove import from '{0}'"), + Implement_interface_0: diag(90006, ts.DiagnosticCategory.Message, "Implement_interface_0_90006", "Implement interface '{0}'"), + Implement_inherited_abstract_class: diag(90007, ts.DiagnosticCategory.Message, "Implement_inherited_abstract_class_90007", "Implement inherited abstract class"), + Add_0_to_unresolved_variable: diag(90008, ts.DiagnosticCategory.Message, "Add_0_to_unresolved_variable_90008", "Add '{0}.' to unresolved variable"), + Remove_destructuring: diag(90009, ts.DiagnosticCategory.Message, "Remove_destructuring_90009", "Remove destructuring"), + Remove_variable_statement: diag(90010, ts.DiagnosticCategory.Message, "Remove_variable_statement_90010", "Remove variable statement"), + Remove_template_tag: diag(90011, ts.DiagnosticCategory.Message, "Remove_template_tag_90011", "Remove template tag"), + Remove_type_parameters: diag(90012, ts.DiagnosticCategory.Message, "Remove_type_parameters_90012", "Remove type parameters"), + Import_0_from_module_1: diag(90013, ts.DiagnosticCategory.Message, "Import_0_from_module_1_90013", "Import '{0}' from module \"{1}\""), + Change_0_to_1: diag(90014, ts.DiagnosticCategory.Message, "Change_0_to_1_90014", "Change '{0}' to '{1}'"), + Add_0_to_existing_import_declaration_from_1: diag(90015, ts.DiagnosticCategory.Message, "Add_0_to_existing_import_declaration_from_1_90015", "Add '{0}' to existing import declaration from \"{1}\""), + Declare_property_0: diag(90016, ts.DiagnosticCategory.Message, "Declare_property_0_90016", "Declare property '{0}'"), + Add_index_signature_for_property_0: diag(90017, ts.DiagnosticCategory.Message, "Add_index_signature_for_property_0_90017", "Add index signature for property '{0}'"), + Disable_checking_for_this_file: diag(90018, ts.DiagnosticCategory.Message, "Disable_checking_for_this_file_90018", "Disable checking for this file"), + Ignore_this_error_message: diag(90019, ts.DiagnosticCategory.Message, "Ignore_this_error_message_90019", "Ignore this error message"), + Initialize_property_0_in_the_constructor: diag(90020, ts.DiagnosticCategory.Message, "Initialize_property_0_in_the_constructor_90020", "Initialize property '{0}' in the constructor"), + Initialize_static_property_0: diag(90021, ts.DiagnosticCategory.Message, "Initialize_static_property_0_90021", "Initialize static property '{0}'"), + Change_spelling_to_0: diag(90022, ts.DiagnosticCategory.Message, "Change_spelling_to_0_90022", "Change spelling to '{0}'"), + Declare_method_0: diag(90023, ts.DiagnosticCategory.Message, "Declare_method_0_90023", "Declare method '{0}'"), + Declare_static_method_0: diag(90024, ts.DiagnosticCategory.Message, "Declare_static_method_0_90024", "Declare static method '{0}'"), + Prefix_0_with_an_underscore: diag(90025, ts.DiagnosticCategory.Message, "Prefix_0_with_an_underscore_90025", "Prefix '{0}' with an underscore"), + Rewrite_as_the_indexed_access_type_0: diag(90026, ts.DiagnosticCategory.Message, "Rewrite_as_the_indexed_access_type_0_90026", "Rewrite as the indexed access type '{0}'"), + Declare_static_property_0: diag(90027, ts.DiagnosticCategory.Message, "Declare_static_property_0_90027", "Declare static property '{0}'"), + Call_decorator_expression: diag(90028, ts.DiagnosticCategory.Message, "Call_decorator_expression_90028", "Call decorator expression"), + Add_async_modifier_to_containing_function: diag(90029, ts.DiagnosticCategory.Message, "Add_async_modifier_to_containing_function_90029", "Add async modifier to containing function"), + Replace_infer_0_with_unknown: diag(90030, ts.DiagnosticCategory.Message, "Replace_infer_0_with_unknown_90030", "Replace 'infer {0}' with 'unknown'"), + Replace_all_unused_infer_with_unknown: diag(90031, ts.DiagnosticCategory.Message, "Replace_all_unused_infer_with_unknown_90031", "Replace all unused 'infer' with 'unknown'"), + Import_default_0_from_module_1: diag(90032, ts.DiagnosticCategory.Message, "Import_default_0_from_module_1_90032", "Import default '{0}' from module \"{1}\""), + Add_default_import_0_to_existing_import_declaration_from_1: diag(90033, ts.DiagnosticCategory.Message, "Add_default_import_0_to_existing_import_declaration_from_1_90033", "Add default import '{0}' to existing import declaration from \"{1}\""), + Add_parameter_name: diag(90034, ts.DiagnosticCategory.Message, "Add_parameter_name_90034", "Add parameter name"), + Declare_private_property_0: diag(90035, ts.DiagnosticCategory.Message, "Declare_private_property_0_90035", "Declare private property '{0}'"), + Declare_a_private_field_named_0: diag(90053, ts.DiagnosticCategory.Message, "Declare_a_private_field_named_0_90053", "Declare a private field named '{0}'."), + Convert_function_to_an_ES2015_class: diag(95001, ts.DiagnosticCategory.Message, "Convert_function_to_an_ES2015_class_95001", "Convert function to an ES2015 class"), + Convert_function_0_to_class: diag(95002, ts.DiagnosticCategory.Message, "Convert_function_0_to_class_95002", "Convert function '{0}' to class"), + Extract_to_0_in_1: diag(95004, ts.DiagnosticCategory.Message, "Extract_to_0_in_1_95004", "Extract to {0} in {1}"), + Extract_function: diag(95005, ts.DiagnosticCategory.Message, "Extract_function_95005", "Extract function"), + Extract_constant: diag(95006, ts.DiagnosticCategory.Message, "Extract_constant_95006", "Extract constant"), + Extract_to_0_in_enclosing_scope: diag(95007, ts.DiagnosticCategory.Message, "Extract_to_0_in_enclosing_scope_95007", "Extract to {0} in enclosing scope"), + Extract_to_0_in_1_scope: diag(95008, ts.DiagnosticCategory.Message, "Extract_to_0_in_1_scope_95008", "Extract to {0} in {1} scope"), + Annotate_with_type_from_JSDoc: diag(95009, ts.DiagnosticCategory.Message, "Annotate_with_type_from_JSDoc_95009", "Annotate with type from JSDoc"), + Annotate_with_types_from_JSDoc: diag(95010, ts.DiagnosticCategory.Message, "Annotate_with_types_from_JSDoc_95010", "Annotate with types from JSDoc"), + Infer_type_of_0_from_usage: diag(95011, ts.DiagnosticCategory.Message, "Infer_type_of_0_from_usage_95011", "Infer type of '{0}' from usage"), + Infer_parameter_types_from_usage: diag(95012, ts.DiagnosticCategory.Message, "Infer_parameter_types_from_usage_95012", "Infer parameter types from usage"), + Convert_to_default_import: diag(95013, ts.DiagnosticCategory.Message, "Convert_to_default_import_95013", "Convert to default import"), + Install_0: diag(95014, ts.DiagnosticCategory.Message, "Install_0_95014", "Install '{0}'"), + Replace_import_with_0: diag(95015, ts.DiagnosticCategory.Message, "Replace_import_with_0_95015", "Replace import with '{0}'."), + Use_synthetic_default_member: diag(95016, ts.DiagnosticCategory.Message, "Use_synthetic_default_member_95016", "Use synthetic 'default' member."), + Convert_to_ES6_module: diag(95017, ts.DiagnosticCategory.Message, "Convert_to_ES6_module_95017", "Convert to ES6 module"), + Add_undefined_type_to_property_0: diag(95018, ts.DiagnosticCategory.Message, "Add_undefined_type_to_property_0_95018", "Add 'undefined' type to property '{0}'"), + Add_initializer_to_property_0: diag(95019, ts.DiagnosticCategory.Message, "Add_initializer_to_property_0_95019", "Add initializer to property '{0}'"), + Add_definite_assignment_assertion_to_property_0: diag(95020, ts.DiagnosticCategory.Message, "Add_definite_assignment_assertion_to_property_0_95020", "Add definite assignment assertion to property '{0}'"), + Add_all_missing_members: diag(95022, ts.DiagnosticCategory.Message, "Add_all_missing_members_95022", "Add all missing members"), + Infer_all_types_from_usage: diag(95023, ts.DiagnosticCategory.Message, "Infer_all_types_from_usage_95023", "Infer all types from usage"), + Delete_all_unused_declarations: diag(95024, ts.DiagnosticCategory.Message, "Delete_all_unused_declarations_95024", "Delete all unused declarations"), + Prefix_all_unused_declarations_with_where_possible: diag(95025, ts.DiagnosticCategory.Message, "Prefix_all_unused_declarations_with_where_possible_95025", "Prefix all unused declarations with '_' where possible"), + Fix_all_detected_spelling_errors: diag(95026, ts.DiagnosticCategory.Message, "Fix_all_detected_spelling_errors_95026", "Fix all detected spelling errors"), + Add_initializers_to_all_uninitialized_properties: diag(95027, ts.DiagnosticCategory.Message, "Add_initializers_to_all_uninitialized_properties_95027", "Add initializers to all uninitialized properties"), + Add_definite_assignment_assertions_to_all_uninitialized_properties: diag(95028, ts.DiagnosticCategory.Message, "Add_definite_assignment_assertions_to_all_uninitialized_properties_95028", "Add definite assignment assertions to all uninitialized properties"), + Add_undefined_type_to_all_uninitialized_properties: diag(95029, ts.DiagnosticCategory.Message, "Add_undefined_type_to_all_uninitialized_properties_95029", "Add undefined type to all uninitialized properties"), + Change_all_jsdoc_style_types_to_TypeScript: diag(95030, ts.DiagnosticCategory.Message, "Change_all_jsdoc_style_types_to_TypeScript_95030", "Change all jsdoc-style types to TypeScript"), + Change_all_jsdoc_style_types_to_TypeScript_and_add_undefined_to_nullable_types: diag(95031, ts.DiagnosticCategory.Message, "Change_all_jsdoc_style_types_to_TypeScript_and_add_undefined_to_nullable_types_95031", "Change all jsdoc-style types to TypeScript (and add '| undefined' to nullable types)"), + Implement_all_unimplemented_interfaces: diag(95032, ts.DiagnosticCategory.Message, "Implement_all_unimplemented_interfaces_95032", "Implement all unimplemented interfaces"), + Install_all_missing_types_packages: diag(95033, ts.DiagnosticCategory.Message, "Install_all_missing_types_packages_95033", "Install all missing types packages"), + Rewrite_all_as_indexed_access_types: diag(95034, ts.DiagnosticCategory.Message, "Rewrite_all_as_indexed_access_types_95034", "Rewrite all as indexed access types"), + Convert_all_to_default_imports: diag(95035, ts.DiagnosticCategory.Message, "Convert_all_to_default_imports_95035", "Convert all to default imports"), + Make_all_super_calls_the_first_statement_in_their_constructor: diag(95036, ts.DiagnosticCategory.Message, "Make_all_super_calls_the_first_statement_in_their_constructor_95036", "Make all 'super()' calls the first statement in their constructor"), + Add_qualifier_to_all_unresolved_variables_matching_a_member_name: diag(95037, ts.DiagnosticCategory.Message, "Add_qualifier_to_all_unresolved_variables_matching_a_member_name_95037", "Add qualifier to all unresolved variables matching a member name"), + Change_all_extended_interfaces_to_implements: diag(95038, ts.DiagnosticCategory.Message, "Change_all_extended_interfaces_to_implements_95038", "Change all extended interfaces to 'implements'"), + Add_all_missing_super_calls: diag(95039, ts.DiagnosticCategory.Message, "Add_all_missing_super_calls_95039", "Add all missing super calls"), + Implement_all_inherited_abstract_classes: diag(95040, ts.DiagnosticCategory.Message, "Implement_all_inherited_abstract_classes_95040", "Implement all inherited abstract classes"), + Add_all_missing_async_modifiers: diag(95041, ts.DiagnosticCategory.Message, "Add_all_missing_async_modifiers_95041", "Add all missing 'async' modifiers"), + Add_ts_ignore_to_all_error_messages: diag(95042, ts.DiagnosticCategory.Message, "Add_ts_ignore_to_all_error_messages_95042", "Add '@ts-ignore' to all error messages"), + Annotate_everything_with_types_from_JSDoc: diag(95043, ts.DiagnosticCategory.Message, "Annotate_everything_with_types_from_JSDoc_95043", "Annotate everything with types from JSDoc"), + Add_to_all_uncalled_decorators: diag(95044, ts.DiagnosticCategory.Message, "Add_to_all_uncalled_decorators_95044", "Add '()' to all uncalled decorators"), + Convert_all_constructor_functions_to_classes: diag(95045, ts.DiagnosticCategory.Message, "Convert_all_constructor_functions_to_classes_95045", "Convert all constructor functions to classes"), + Generate_get_and_set_accessors: diag(95046, ts.DiagnosticCategory.Message, "Generate_get_and_set_accessors_95046", "Generate 'get' and 'set' accessors"), + Convert_require_to_import: diag(95047, ts.DiagnosticCategory.Message, "Convert_require_to_import_95047", "Convert 'require' to 'import'"), + Convert_all_require_to_import: diag(95048, ts.DiagnosticCategory.Message, "Convert_all_require_to_import_95048", "Convert all 'require' to 'import'"), + Move_to_a_new_file: diag(95049, ts.DiagnosticCategory.Message, "Move_to_a_new_file_95049", "Move to a new file"), + Remove_unreachable_code: diag(95050, ts.DiagnosticCategory.Message, "Remove_unreachable_code_95050", "Remove unreachable code"), + Remove_all_unreachable_code: diag(95051, ts.DiagnosticCategory.Message, "Remove_all_unreachable_code_95051", "Remove all unreachable code"), + Add_missing_typeof: diag(95052, ts.DiagnosticCategory.Message, "Add_missing_typeof_95052", "Add missing 'typeof'"), + Remove_unused_label: diag(95053, ts.DiagnosticCategory.Message, "Remove_unused_label_95053", "Remove unused label"), + Remove_all_unused_labels: diag(95054, ts.DiagnosticCategory.Message, "Remove_all_unused_labels_95054", "Remove all unused labels"), + Convert_0_to_mapped_object_type: diag(95055, ts.DiagnosticCategory.Message, "Convert_0_to_mapped_object_type_95055", "Convert '{0}' to mapped object type"), + Convert_namespace_import_to_named_imports: diag(95056, ts.DiagnosticCategory.Message, "Convert_namespace_import_to_named_imports_95056", "Convert namespace import to named imports"), + Convert_named_imports_to_namespace_import: diag(95057, ts.DiagnosticCategory.Message, "Convert_named_imports_to_namespace_import_95057", "Convert named imports to namespace import"), + Add_or_remove_braces_in_an_arrow_function: diag(95058, ts.DiagnosticCategory.Message, "Add_or_remove_braces_in_an_arrow_function_95058", "Add or remove braces in an arrow function"), + Add_braces_to_arrow_function: diag(95059, ts.DiagnosticCategory.Message, "Add_braces_to_arrow_function_95059", "Add braces to arrow function"), + Remove_braces_from_arrow_function: diag(95060, ts.DiagnosticCategory.Message, "Remove_braces_from_arrow_function_95060", "Remove braces from arrow function"), + Convert_default_export_to_named_export: diag(95061, ts.DiagnosticCategory.Message, "Convert_default_export_to_named_export_95061", "Convert default export to named export"), + Convert_named_export_to_default_export: diag(95062, ts.DiagnosticCategory.Message, "Convert_named_export_to_default_export_95062", "Convert named export to default export"), + Add_missing_enum_member_0: diag(95063, ts.DiagnosticCategory.Message, "Add_missing_enum_member_0_95063", "Add missing enum member '{0}'"), + Add_all_missing_imports: diag(95064, ts.DiagnosticCategory.Message, "Add_all_missing_imports_95064", "Add all missing imports"), + Convert_to_async_function: diag(95065, ts.DiagnosticCategory.Message, "Convert_to_async_function_95065", "Convert to async function"), + Convert_all_to_async_functions: diag(95066, ts.DiagnosticCategory.Message, "Convert_all_to_async_functions_95066", "Convert all to async functions"), + Add_missing_call_parentheses: diag(95067, ts.DiagnosticCategory.Message, "Add_missing_call_parentheses_95067", "Add missing call parentheses"), + Add_all_missing_call_parentheses: diag(95068, ts.DiagnosticCategory.Message, "Add_all_missing_call_parentheses_95068", "Add all missing call parentheses"), + Add_unknown_conversion_for_non_overlapping_types: diag(95069, ts.DiagnosticCategory.Message, "Add_unknown_conversion_for_non_overlapping_types_95069", "Add 'unknown' conversion for non-overlapping types"), + Add_unknown_to_all_conversions_of_non_overlapping_types: diag(95070, ts.DiagnosticCategory.Message, "Add_unknown_to_all_conversions_of_non_overlapping_types_95070", "Add 'unknown' to all conversions of non-overlapping types"), + Add_missing_new_operator_to_call: diag(95071, ts.DiagnosticCategory.Message, "Add_missing_new_operator_to_call_95071", "Add missing 'new' operator to call"), + Add_missing_new_operator_to_all_calls: diag(95072, ts.DiagnosticCategory.Message, "Add_missing_new_operator_to_all_calls_95072", "Add missing 'new' operator to all calls"), + Add_names_to_all_parameters_without_names: diag(95073, ts.DiagnosticCategory.Message, "Add_names_to_all_parameters_without_names_95073", "Add names to all parameters without names"), + Enable_the_experimentalDecorators_option_in_your_configuration_file: diag(95074, ts.DiagnosticCategory.Message, "Enable_the_experimentalDecorators_option_in_your_configuration_file_95074", "Enable the 'experimentalDecorators' option in your configuration file"), + Convert_parameters_to_destructured_object: diag(95075, ts.DiagnosticCategory.Message, "Convert_parameters_to_destructured_object_95075", "Convert parameters to destructured object"), + Allow_accessing_UMD_globals_from_modules: diag(95076, ts.DiagnosticCategory.Message, "Allow_accessing_UMD_globals_from_modules_95076", "Allow accessing UMD globals from modules."), + Extract_type: diag(95077, ts.DiagnosticCategory.Message, "Extract_type_95077", "Extract type"), + Extract_to_type_alias: diag(95078, ts.DiagnosticCategory.Message, "Extract_to_type_alias_95078", "Extract to type alias"), + Extract_to_typedef: diag(95079, ts.DiagnosticCategory.Message, "Extract_to_typedef_95079", "Extract to typedef"), + Infer_this_type_of_0_from_usage: diag(95080, ts.DiagnosticCategory.Message, "Infer_this_type_of_0_from_usage_95080", "Infer 'this' type of '{0}' from usage"), + Add_const_to_unresolved_variable: diag(95081, ts.DiagnosticCategory.Message, "Add_const_to_unresolved_variable_95081", "Add 'const' to unresolved variable"), + Add_const_to_all_unresolved_variables: diag(95082, ts.DiagnosticCategory.Message, "Add_const_to_all_unresolved_variables_95082", "Add 'const' to all unresolved variables"), + Add_await: diag(95083, ts.DiagnosticCategory.Message, "Add_await_95083", "Add 'await'"), + Add_await_to_initializer_for_0: diag(95084, ts.DiagnosticCategory.Message, "Add_await_to_initializer_for_0_95084", "Add 'await' to initializer for '{0}'"), + Fix_all_expressions_possibly_missing_await: diag(95085, ts.DiagnosticCategory.Message, "Fix_all_expressions_possibly_missing_await_95085", "Fix all expressions possibly missing 'await'"), + Remove_unnecessary_await: diag(95086, ts.DiagnosticCategory.Message, "Remove_unnecessary_await_95086", "Remove unnecessary 'await'"), + Remove_all_unnecessary_uses_of_await: diag(95087, ts.DiagnosticCategory.Message, "Remove_all_unnecessary_uses_of_await_95087", "Remove all unnecessary uses of 'await'"), + Enable_the_jsx_flag_in_your_configuration_file: diag(95088, ts.DiagnosticCategory.Message, "Enable_the_jsx_flag_in_your_configuration_file_95088", "Enable the '--jsx' flag in your configuration file"), + Add_await_to_initializers: diag(95089, ts.DiagnosticCategory.Message, "Add_await_to_initializers_95089", "Add 'await' to initializers"), + Extract_to_interface: diag(95090, ts.DiagnosticCategory.Message, "Extract_to_interface_95090", "Extract to interface"), + Convert_to_a_bigint_numeric_literal: diag(95091, ts.DiagnosticCategory.Message, "Convert_to_a_bigint_numeric_literal_95091", "Convert to a bigint numeric literal"), + Convert_all_to_bigint_numeric_literals: diag(95092, ts.DiagnosticCategory.Message, "Convert_all_to_bigint_numeric_literals_95092", "Convert all to bigint numeric literals"), + Convert_const_to_let: diag(95093, ts.DiagnosticCategory.Message, "Convert_const_to_let_95093", "Convert 'const' to 'let'"), + Prefix_with_declare: diag(95094, ts.DiagnosticCategory.Message, "Prefix_with_declare_95094", "Prefix with 'declare'"), + Prefix_all_incorrect_property_declarations_with_declare: diag(95095, ts.DiagnosticCategory.Message, "Prefix_all_incorrect_property_declarations_with_declare_95095", "Prefix all incorrect property declarations with 'declare'"), + Convert_to_template_string: diag(95096, ts.DiagnosticCategory.Message, "Convert_to_template_string_95096", "Convert to template string"), + Add_export_to_make_this_file_into_a_module: diag(95097, ts.DiagnosticCategory.Message, "Add_export_to_make_this_file_into_a_module_95097", "Add 'export {}' to make this file into a module"), + Set_the_target_option_in_your_configuration_file_to_0: diag(95098, ts.DiagnosticCategory.Message, "Set_the_target_option_in_your_configuration_file_to_0_95098", "Set the 'target' option in your configuration file to '{0}'"), + Set_the_module_option_in_your_configuration_file_to_0: diag(95099, ts.DiagnosticCategory.Message, "Set_the_module_option_in_your_configuration_file_to_0_95099", "Set the 'module' option in your configuration file to '{0}'"), + Convert_invalid_character_to_its_html_entity_code: diag(95100, ts.DiagnosticCategory.Message, "Convert_invalid_character_to_its_html_entity_code_95100", "Convert invalid character to its html entity code"), + Convert_all_invalid_characters_to_HTML_entity_code: diag(95101, ts.DiagnosticCategory.Message, "Convert_all_invalid_characters_to_HTML_entity_code_95101", "Convert all invalid characters to HTML entity code"), + Add_class_tag: diag(95102, ts.DiagnosticCategory.Message, "Add_class_tag_95102", "Add '@class' tag"), + Add_this_tag: diag(95103, ts.DiagnosticCategory.Message, "Add_this_tag_95103", "Add '@this' tag"), + Add_this_parameter: diag(95104, ts.DiagnosticCategory.Message, "Add_this_parameter_95104", "Add 'this' parameter."), + Convert_function_expression_0_to_arrow_function: diag(95105, ts.DiagnosticCategory.Message, "Convert_function_expression_0_to_arrow_function_95105", "Convert function expression '{0}' to arrow function"), + Convert_function_declaration_0_to_arrow_function: diag(95106, ts.DiagnosticCategory.Message, "Convert_function_declaration_0_to_arrow_function_95106", "Convert function declaration '{0}' to arrow function"), + Fix_all_implicit_this_errors: diag(95107, ts.DiagnosticCategory.Message, "Fix_all_implicit_this_errors_95107", "Fix all implicit-'this' errors"), + Wrap_invalid_character_in_an_expression_container: diag(95108, ts.DiagnosticCategory.Message, "Wrap_invalid_character_in_an_expression_container_95108", "Wrap invalid character in an expression container"), + Wrap_all_invalid_characters_in_an_expression_container: diag(95109, ts.DiagnosticCategory.Message, "Wrap_all_invalid_characters_in_an_expression_container_95109", "Wrap all invalid characters in an expression container"), + Visit_https_Colon_Slash_Slashaka_ms_Slashtsconfig_json_to_read_more_about_this_file: diag(95110, ts.DiagnosticCategory.Message, "Visit_https_Colon_Slash_Slashaka_ms_Slashtsconfig_json_to_read_more_about_this_file_95110", "Visit https://aka.ms/tsconfig.json to read more about this file"), + Add_a_return_statement: diag(95111, ts.DiagnosticCategory.Message, "Add_a_return_statement_95111", "Add a return statement"), + Remove_block_body_braces: diag(95112, ts.DiagnosticCategory.Message, "Remove_block_body_braces_95112", "Remove block body braces"), + Wrap_the_following_body_with_parentheses_which_should_be_an_object_literal: diag(95113, ts.DiagnosticCategory.Message, "Wrap_the_following_body_with_parentheses_which_should_be_an_object_literal_95113", "Wrap the following body with parentheses which should be an object literal"), + Add_all_missing_return_statement: diag(95114, ts.DiagnosticCategory.Message, "Add_all_missing_return_statement_95114", "Add all missing return statement"), + Remove_all_incorrect_body_block_braces: diag(95115, ts.DiagnosticCategory.Message, "Remove_all_incorrect_body_block_braces_95115", "Remove all incorrect body block braces"), + Wrap_all_object_literal_with_parentheses: diag(95116, ts.DiagnosticCategory.Message, "Wrap_all_object_literal_with_parentheses_95116", "Wrap all object literal with parentheses"), + No_value_exists_in_scope_for_the_shorthand_property_0_Either_declare_one_or_provide_an_initializer: diag(18004, ts.DiagnosticCategory.Error, "No_value_exists_in_scope_for_the_shorthand_property_0_Either_declare_one_or_provide_an_initializer_18004", "No value exists in scope for the shorthand property '{0}'. Either declare one or provide an initializer."), + Classes_may_not_have_a_field_named_constructor: diag(18006, ts.DiagnosticCategory.Error, "Classes_may_not_have_a_field_named_constructor_18006", "Classes may not have a field named 'constructor'."), + JSX_expressions_may_not_use_the_comma_operator_Did_you_mean_to_write_an_array: diag(18007, ts.DiagnosticCategory.Error, "JSX_expressions_may_not_use_the_comma_operator_Did_you_mean_to_write_an_array_18007", "JSX expressions may not use the comma operator. Did you mean to write an array?"), + Private_identifiers_cannot_be_used_as_parameters: diag(18009, ts.DiagnosticCategory.Error, "Private_identifiers_cannot_be_used_as_parameters_18009", "Private identifiers cannot be used as parameters"), + An_accessibility_modifier_cannot_be_used_with_a_private_identifier: diag(18010, ts.DiagnosticCategory.Error, "An_accessibility_modifier_cannot_be_used_with_a_private_identifier_18010", "An accessibility modifier cannot be used with a private identifier."), + The_operand_of_a_delete_operator_cannot_be_a_private_identifier: diag(18011, ts.DiagnosticCategory.Error, "The_operand_of_a_delete_operator_cannot_be_a_private_identifier_18011", "The operand of a 'delete' operator cannot be a private identifier."), + constructor_is_a_reserved_word: diag(18012, ts.DiagnosticCategory.Error, "constructor_is_a_reserved_word_18012", "'#constructor' is a reserved word."), + Property_0_is_not_accessible_outside_class_1_because_it_has_a_private_identifier: diag(18013, ts.DiagnosticCategory.Error, "Property_0_is_not_accessible_outside_class_1_because_it_has_a_private_identifier_18013", "Property '{0}' is not accessible outside class '{1}' because it has a private identifier."), + The_property_0_cannot_be_accessed_on_type_1_within_this_class_because_it_is_shadowed_by_another_private_identifier_with_the_same_spelling: diag(18014, ts.DiagnosticCategory.Error, "The_property_0_cannot_be_accessed_on_type_1_within_this_class_because_it_is_shadowed_by_another_priv_18014", "The property '{0}' cannot be accessed on type '{1}' within this class because it is shadowed by another private identifier with the same spelling."), + Property_0_in_type_1_refers_to_a_different_member_that_cannot_be_accessed_from_within_type_2: diag(18015, ts.DiagnosticCategory.Error, "Property_0_in_type_1_refers_to_a_different_member_that_cannot_be_accessed_from_within_type_2_18015", "Property '{0}' in type '{1}' refers to a different member that cannot be accessed from within type '{2}'."), + Private_identifiers_are_not_allowed_outside_class_bodies: diag(18016, ts.DiagnosticCategory.Error, "Private_identifiers_are_not_allowed_outside_class_bodies_18016", "Private identifiers are not allowed outside class bodies."), + The_shadowing_declaration_of_0_is_defined_here: diag(18017, ts.DiagnosticCategory.Error, "The_shadowing_declaration_of_0_is_defined_here_18017", "The shadowing declaration of '{0}' is defined here"), + The_declaration_of_0_that_you_probably_intended_to_use_is_defined_here: diag(18018, ts.DiagnosticCategory.Error, "The_declaration_of_0_that_you_probably_intended_to_use_is_defined_here_18018", "The declaration of '{0}' that you probably intended to use is defined here"), + _0_modifier_cannot_be_used_with_a_private_identifier: diag(18019, ts.DiagnosticCategory.Error, "_0_modifier_cannot_be_used_with_a_private_identifier_18019", "'{0}' modifier cannot be used with a private identifier"), + A_method_cannot_be_named_with_a_private_identifier: diag(18022, ts.DiagnosticCategory.Error, "A_method_cannot_be_named_with_a_private_identifier_18022", "A method cannot be named with a private identifier."), + An_accessor_cannot_be_named_with_a_private_identifier: diag(18023, ts.DiagnosticCategory.Error, "An_accessor_cannot_be_named_with_a_private_identifier_18023", "An accessor cannot be named with a private identifier."), + An_enum_member_cannot_be_named_with_a_private_identifier: diag(18024, ts.DiagnosticCategory.Error, "An_enum_member_cannot_be_named_with_a_private_identifier_18024", "An enum member cannot be named with a private identifier."), + can_only_be_used_at_the_start_of_a_file: diag(18026, ts.DiagnosticCategory.Error, "can_only_be_used_at_the_start_of_a_file_18026", "'#!' can only be used at the start of a file."), + Compiler_reserves_name_0_when_emitting_private_identifier_downlevel: diag(18027, ts.DiagnosticCategory.Error, "Compiler_reserves_name_0_when_emitting_private_identifier_downlevel_18027", "Compiler reserves name '{0}' when emitting private identifier downlevel."), + Private_identifiers_are_only_available_when_targeting_ECMAScript_2015_and_higher: diag(18028, ts.DiagnosticCategory.Error, "Private_identifiers_are_only_available_when_targeting_ECMAScript_2015_and_higher_18028", "Private identifiers are only available when targeting ECMAScript 2015 and higher."), + Private_identifiers_are_not_allowed_in_variable_declarations: diag(18029, ts.DiagnosticCategory.Error, "Private_identifiers_are_not_allowed_in_variable_declarations_18029", "Private identifiers are not allowed in variable declarations."), + An_optional_chain_cannot_contain_private_identifiers: diag(18030, ts.DiagnosticCategory.Error, "An_optional_chain_cannot_contain_private_identifiers_18030", "An optional chain cannot contain private identifiers."), + The_intersection_0_was_reduced_to_never_because_property_1_has_conflicting_types_in_some_constituents: diag(18031, ts.DiagnosticCategory.Error, "The_intersection_0_was_reduced_to_never_because_property_1_has_conflicting_types_in_some_constituent_18031", "The intersection '{0}' was reduced to 'never' because property '{1}' has conflicting types in some constituents."), + The_intersection_0_was_reduced_to_never_because_property_1_exists_in_multiple_constituents_and_is_private_in_some: diag(18032, ts.DiagnosticCategory.Error, "The_intersection_0_was_reduced_to_never_because_property_1_exists_in_multiple_constituents_and_is_pr_18032", "The intersection '{0}' was reduced to 'never' because property '{1}' exists in multiple constituents and is private in some."), + Only_numeric_enums_can_have_computed_members_but_this_expression_has_type_0_If_you_do_not_need_exhaustiveness_checks_consider_using_an_object_literal_instead: diag(18033, ts.DiagnosticCategory.Error, "Only_numeric_enums_can_have_computed_members_but_this_expression_has_type_0_If_you_do_not_need_exhau_18033", "Only numeric enums can have computed members, but this expression has type '{0}'. If you do not need exhaustiveness checks, consider using an object literal instead."), + }; +})(ts || (ts = {})); +var ts; +(function (ts) { + var _a; + /* @internal */ + function tokenIsIdentifierOrKeyword(token) { + return token >= 75 /* Identifier */; + } + ts.tokenIsIdentifierOrKeyword = tokenIsIdentifierOrKeyword; + /* @internal */ + function tokenIsIdentifierOrKeywordOrGreaterThan(token) { + return token === 31 /* GreaterThanToken */ || tokenIsIdentifierOrKeyword(token); + } + ts.tokenIsIdentifierOrKeywordOrGreaterThan = tokenIsIdentifierOrKeywordOrGreaterThan; + var textToKeywordObj = (_a = { + abstract: 122 /* AbstractKeyword */, + any: 125 /* AnyKeyword */, + as: 123 /* AsKeyword */, + asserts: 124 /* AssertsKeyword */, + bigint: 151 /* BigIntKeyword */, + boolean: 128 /* BooleanKeyword */, + break: 77 /* BreakKeyword */, + case: 78 /* CaseKeyword */, + catch: 79 /* CatchKeyword */, + class: 80 /* ClassKeyword */, + continue: 82 /* ContinueKeyword */, + const: 81 /* ConstKeyword */ + }, + _a["" + "constructor"] = 129 /* ConstructorKeyword */, + _a.debugger = 83 /* DebuggerKeyword */, + _a.declare = 130 /* DeclareKeyword */, + _a.default = 84 /* DefaultKeyword */, + _a.delete = 85 /* DeleteKeyword */, + _a.do = 86 /* DoKeyword */, + _a.else = 87 /* ElseKeyword */, + _a.enum = 88 /* EnumKeyword */, + _a.export = 89 /* ExportKeyword */, + _a.extends = 90 /* ExtendsKeyword */, + _a.false = 91 /* FalseKeyword */, + _a.finally = 92 /* FinallyKeyword */, + _a.for = 93 /* ForKeyword */, + _a.from = 149 /* FromKeyword */, + _a.function = 94 /* FunctionKeyword */, + _a.get = 131 /* GetKeyword */, + _a.if = 95 /* IfKeyword */, + _a.implements = 113 /* ImplementsKeyword */, + _a.import = 96 /* ImportKeyword */, + _a.in = 97 /* InKeyword */, + _a.infer = 132 /* InferKeyword */, + _a.instanceof = 98 /* InstanceOfKeyword */, + _a.interface = 114 /* InterfaceKeyword */, + _a.is = 133 /* IsKeyword */, + _a.keyof = 134 /* KeyOfKeyword */, + _a.let = 115 /* LetKeyword */, + _a.module = 135 /* ModuleKeyword */, + _a.namespace = 136 /* NamespaceKeyword */, + _a.never = 137 /* NeverKeyword */, + _a.new = 99 /* NewKeyword */, + _a.null = 100 /* NullKeyword */, + _a.number = 140 /* NumberKeyword */, + _a.object = 141 /* ObjectKeyword */, + _a.package = 116 /* PackageKeyword */, + _a.private = 117 /* PrivateKeyword */, + _a.protected = 118 /* ProtectedKeyword */, + _a.public = 119 /* PublicKeyword */, + _a.readonly = 138 /* ReadonlyKeyword */, + _a.require = 139 /* RequireKeyword */, + _a.global = 150 /* GlobalKeyword */, + _a.return = 101 /* ReturnKeyword */, + _a.set = 142 /* SetKeyword */, + _a.static = 120 /* StaticKeyword */, + _a.string = 143 /* StringKeyword */, + _a.super = 102 /* SuperKeyword */, + _a.switch = 103 /* SwitchKeyword */, + _a.symbol = 144 /* SymbolKeyword */, + _a.this = 104 /* ThisKeyword */, + _a.throw = 105 /* ThrowKeyword */, + _a.true = 106 /* TrueKeyword */, + _a.try = 107 /* TryKeyword */, + _a.type = 145 /* TypeKeyword */, + _a.typeof = 108 /* TypeOfKeyword */, + _a.undefined = 146 /* UndefinedKeyword */, + _a.unique = 147 /* UniqueKeyword */, + _a.unknown = 148 /* UnknownKeyword */, + _a.var = 109 /* VarKeyword */, + _a.void = 110 /* VoidKeyword */, + _a.while = 111 /* WhileKeyword */, + _a.with = 112 /* WithKeyword */, + _a.yield = 121 /* YieldKeyword */, + _a.async = 126 /* AsyncKeyword */, + _a.await = 127 /* AwaitKeyword */, + _a.of = 152 /* OfKeyword */, + _a); + var textToKeyword = ts.createMapFromTemplate(textToKeywordObj); + var textToToken = ts.createMapFromTemplate(__assign(__assign({}, textToKeywordObj), { "{": 18 /* OpenBraceToken */, "}": 19 /* CloseBraceToken */, "(": 20 /* OpenParenToken */, ")": 21 /* CloseParenToken */, "[": 22 /* OpenBracketToken */, "]": 23 /* CloseBracketToken */, ".": 24 /* DotToken */, "...": 25 /* DotDotDotToken */, ";": 26 /* SemicolonToken */, ",": 27 /* CommaToken */, "<": 29 /* LessThanToken */, ">": 31 /* GreaterThanToken */, "<=": 32 /* LessThanEqualsToken */, ">=": 33 /* GreaterThanEqualsToken */, "==": 34 /* EqualsEqualsToken */, "!=": 35 /* ExclamationEqualsToken */, "===": 36 /* EqualsEqualsEqualsToken */, "!==": 37 /* ExclamationEqualsEqualsToken */, "=>": 38 /* EqualsGreaterThanToken */, "+": 39 /* PlusToken */, "-": 40 /* MinusToken */, "**": 42 /* AsteriskAsteriskToken */, "*": 41 /* AsteriskToken */, "/": 43 /* SlashToken */, "%": 44 /* PercentToken */, "++": 45 /* PlusPlusToken */, "--": 46 /* MinusMinusToken */, "<<": 47 /* LessThanLessThanToken */, ">": 48 /* GreaterThanGreaterThanToken */, ">>>": 49 /* GreaterThanGreaterThanGreaterThanToken */, "&": 50 /* AmpersandToken */, "|": 51 /* BarToken */, "^": 52 /* CaretToken */, "!": 53 /* ExclamationToken */, "~": 54 /* TildeToken */, "&&": 55 /* AmpersandAmpersandToken */, "||": 56 /* BarBarToken */, "?": 57 /* QuestionToken */, "??": 60 /* QuestionQuestionToken */, "?.": 28 /* QuestionDotToken */, ":": 58 /* ColonToken */, "=": 62 /* EqualsToken */, "+=": 63 /* PlusEqualsToken */, "-=": 64 /* MinusEqualsToken */, "*=": 65 /* AsteriskEqualsToken */, "**=": 66 /* AsteriskAsteriskEqualsToken */, "/=": 67 /* SlashEqualsToken */, "%=": 68 /* PercentEqualsToken */, "<<=": 69 /* LessThanLessThanEqualsToken */, ">>=": 70 /* GreaterThanGreaterThanEqualsToken */, ">>>=": 71 /* GreaterThanGreaterThanGreaterThanEqualsToken */, "&=": 72 /* AmpersandEqualsToken */, "|=": 73 /* BarEqualsToken */, "^=": 74 /* CaretEqualsToken */, "@": 59 /* AtToken */, "`": 61 /* BacktickToken */ })); + /* + As per ECMAScript Language Specification 3th Edition, Section 7.6: Identifiers + IdentifierStart :: + Can contain Unicode 3.0.0 categories: + Uppercase letter (Lu), + Lowercase letter (Ll), + Titlecase letter (Lt), + Modifier letter (Lm), + Other letter (Lo), or + Letter number (Nl). + IdentifierPart :: = + Can contain IdentifierStart + Unicode 3.0.0 categories: + Non-spacing mark (Mn), + Combining spacing mark (Mc), + Decimal number (Nd), or + Connector punctuation (Pc). + + Codepoint ranges for ES3 Identifiers are extracted from the Unicode 3.0.0 specification at: + http://www.unicode.org/Public/3.0-Update/UnicodeData-3.0.0.txt + */ + var unicodeES3IdentifierStart = [170, 170, 181, 181, 186, 186, 192, 214, 216, 246, 248, 543, 546, 563, 592, 685, 688, 696, 699, 705, 720, 721, 736, 740, 750, 750, 890, 890, 902, 902, 904, 906, 908, 908, 910, 929, 931, 974, 976, 983, 986, 1011, 1024, 1153, 1164, 1220, 1223, 1224, 1227, 1228, 1232, 1269, 1272, 1273, 1329, 1366, 1369, 1369, 1377, 1415, 1488, 1514, 1520, 1522, 1569, 1594, 1600, 1610, 1649, 1747, 1749, 1749, 1765, 1766, 1786, 1788, 1808, 1808, 1810, 1836, 1920, 1957, 2309, 2361, 2365, 2365, 2384, 2384, 2392, 2401, 2437, 2444, 2447, 2448, 2451, 2472, 2474, 2480, 2482, 2482, 2486, 2489, 2524, 2525, 2527, 2529, 2544, 2545, 2565, 2570, 2575, 2576, 2579, 2600, 2602, 2608, 2610, 2611, 2613, 2614, 2616, 2617, 2649, 2652, 2654, 2654, 2674, 2676, 2693, 2699, 2701, 2701, 2703, 2705, 2707, 2728, 2730, 2736, 2738, 2739, 2741, 2745, 2749, 2749, 2768, 2768, 2784, 2784, 2821, 2828, 2831, 2832, 2835, 2856, 2858, 2864, 2866, 2867, 2870, 2873, 2877, 2877, 2908, 2909, 2911, 2913, 2949, 2954, 2958, 2960, 2962, 2965, 2969, 2970, 2972, 2972, 2974, 2975, 2979, 2980, 2984, 2986, 2990, 2997, 2999, 3001, 3077, 3084, 3086, 3088, 3090, 3112, 3114, 3123, 3125, 3129, 3168, 3169, 3205, 3212, 3214, 3216, 3218, 3240, 3242, 3251, 3253, 3257, 3294, 3294, 3296, 3297, 3333, 3340, 3342, 3344, 3346, 3368, 3370, 3385, 3424, 3425, 3461, 3478, 3482, 3505, 3507, 3515, 3517, 3517, 3520, 3526, 3585, 3632, 3634, 3635, 3648, 3654, 3713, 3714, 3716, 3716, 3719, 3720, 3722, 3722, 3725, 3725, 3732, 3735, 3737, 3743, 3745, 3747, 3749, 3749, 3751, 3751, 3754, 3755, 3757, 3760, 3762, 3763, 3773, 3773, 3776, 3780, 3782, 3782, 3804, 3805, 3840, 3840, 3904, 3911, 3913, 3946, 3976, 3979, 4096, 4129, 4131, 4135, 4137, 4138, 4176, 4181, 4256, 4293, 4304, 4342, 4352, 4441, 4447, 4514, 4520, 4601, 4608, 4614, 4616, 4678, 4680, 4680, 4682, 4685, 4688, 4694, 4696, 4696, 4698, 4701, 4704, 4742, 4744, 4744, 4746, 4749, 4752, 4782, 4784, 4784, 4786, 4789, 4792, 4798, 4800, 4800, 4802, 4805, 4808, 4814, 4816, 4822, 4824, 4846, 4848, 4878, 4880, 4880, 4882, 4885, 4888, 4894, 4896, 4934, 4936, 4954, 5024, 5108, 5121, 5740, 5743, 5750, 5761, 5786, 5792, 5866, 6016, 6067, 6176, 6263, 6272, 6312, 7680, 7835, 7840, 7929, 7936, 7957, 7960, 7965, 7968, 8005, 8008, 8013, 8016, 8023, 8025, 8025, 8027, 8027, 8029, 8029, 8031, 8061, 8064, 8116, 8118, 8124, 8126, 8126, 8130, 8132, 8134, 8140, 8144, 8147, 8150, 8155, 8160, 8172, 8178, 8180, 8182, 8188, 8319, 8319, 8450, 8450, 8455, 8455, 8458, 8467, 8469, 8469, 8473, 8477, 8484, 8484, 8486, 8486, 8488, 8488, 8490, 8493, 8495, 8497, 8499, 8505, 8544, 8579, 12293, 12295, 12321, 12329, 12337, 12341, 12344, 12346, 12353, 12436, 12445, 12446, 12449, 12538, 12540, 12542, 12549, 12588, 12593, 12686, 12704, 12727, 13312, 19893, 19968, 40869, 40960, 42124, 44032, 55203, 63744, 64045, 64256, 64262, 64275, 64279, 64285, 64285, 64287, 64296, 64298, 64310, 64312, 64316, 64318, 64318, 64320, 64321, 64323, 64324, 64326, 64433, 64467, 64829, 64848, 64911, 64914, 64967, 65008, 65019, 65136, 65138, 65140, 65140, 65142, 65276, 65313, 65338, 65345, 65370, 65382, 65470, 65474, 65479, 65482, 65487, 65490, 65495, 65498, 65500,]; + var unicodeES3IdentifierPart = [170, 170, 181, 181, 186, 186, 192, 214, 216, 246, 248, 543, 546, 563, 592, 685, 688, 696, 699, 705, 720, 721, 736, 740, 750, 750, 768, 846, 864, 866, 890, 890, 902, 902, 904, 906, 908, 908, 910, 929, 931, 974, 976, 983, 986, 1011, 1024, 1153, 1155, 1158, 1164, 1220, 1223, 1224, 1227, 1228, 1232, 1269, 1272, 1273, 1329, 1366, 1369, 1369, 1377, 1415, 1425, 1441, 1443, 1465, 1467, 1469, 1471, 1471, 1473, 1474, 1476, 1476, 1488, 1514, 1520, 1522, 1569, 1594, 1600, 1621, 1632, 1641, 1648, 1747, 1749, 1756, 1759, 1768, 1770, 1773, 1776, 1788, 1808, 1836, 1840, 1866, 1920, 1968, 2305, 2307, 2309, 2361, 2364, 2381, 2384, 2388, 2392, 2403, 2406, 2415, 2433, 2435, 2437, 2444, 2447, 2448, 2451, 2472, 2474, 2480, 2482, 2482, 2486, 2489, 2492, 2492, 2494, 2500, 2503, 2504, 2507, 2509, 2519, 2519, 2524, 2525, 2527, 2531, 2534, 2545, 2562, 2562, 2565, 2570, 2575, 2576, 2579, 2600, 2602, 2608, 2610, 2611, 2613, 2614, 2616, 2617, 2620, 2620, 2622, 2626, 2631, 2632, 2635, 2637, 2649, 2652, 2654, 2654, 2662, 2676, 2689, 2691, 2693, 2699, 2701, 2701, 2703, 2705, 2707, 2728, 2730, 2736, 2738, 2739, 2741, 2745, 2748, 2757, 2759, 2761, 2763, 2765, 2768, 2768, 2784, 2784, 2790, 2799, 2817, 2819, 2821, 2828, 2831, 2832, 2835, 2856, 2858, 2864, 2866, 2867, 2870, 2873, 2876, 2883, 2887, 2888, 2891, 2893, 2902, 2903, 2908, 2909, 2911, 2913, 2918, 2927, 2946, 2947, 2949, 2954, 2958, 2960, 2962, 2965, 2969, 2970, 2972, 2972, 2974, 2975, 2979, 2980, 2984, 2986, 2990, 2997, 2999, 3001, 3006, 3010, 3014, 3016, 3018, 3021, 3031, 3031, 3047, 3055, 3073, 3075, 3077, 3084, 3086, 3088, 3090, 3112, 3114, 3123, 3125, 3129, 3134, 3140, 3142, 3144, 3146, 3149, 3157, 3158, 3168, 3169, 3174, 3183, 3202, 3203, 3205, 3212, 3214, 3216, 3218, 3240, 3242, 3251, 3253, 3257, 3262, 3268, 3270, 3272, 3274, 3277, 3285, 3286, 3294, 3294, 3296, 3297, 3302, 3311, 3330, 3331, 3333, 3340, 3342, 3344, 3346, 3368, 3370, 3385, 3390, 3395, 3398, 3400, 3402, 3405, 3415, 3415, 3424, 3425, 3430, 3439, 3458, 3459, 3461, 3478, 3482, 3505, 3507, 3515, 3517, 3517, 3520, 3526, 3530, 3530, 3535, 3540, 3542, 3542, 3544, 3551, 3570, 3571, 3585, 3642, 3648, 3662, 3664, 3673, 3713, 3714, 3716, 3716, 3719, 3720, 3722, 3722, 3725, 3725, 3732, 3735, 3737, 3743, 3745, 3747, 3749, 3749, 3751, 3751, 3754, 3755, 3757, 3769, 3771, 3773, 3776, 3780, 3782, 3782, 3784, 3789, 3792, 3801, 3804, 3805, 3840, 3840, 3864, 3865, 3872, 3881, 3893, 3893, 3895, 3895, 3897, 3897, 3902, 3911, 3913, 3946, 3953, 3972, 3974, 3979, 3984, 3991, 3993, 4028, 4038, 4038, 4096, 4129, 4131, 4135, 4137, 4138, 4140, 4146, 4150, 4153, 4160, 4169, 4176, 4185, 4256, 4293, 4304, 4342, 4352, 4441, 4447, 4514, 4520, 4601, 4608, 4614, 4616, 4678, 4680, 4680, 4682, 4685, 4688, 4694, 4696, 4696, 4698, 4701, 4704, 4742, 4744, 4744, 4746, 4749, 4752, 4782, 4784, 4784, 4786, 4789, 4792, 4798, 4800, 4800, 4802, 4805, 4808, 4814, 4816, 4822, 4824, 4846, 4848, 4878, 4880, 4880, 4882, 4885, 4888, 4894, 4896, 4934, 4936, 4954, 4969, 4977, 5024, 5108, 5121, 5740, 5743, 5750, 5761, 5786, 5792, 5866, 6016, 6099, 6112, 6121, 6160, 6169, 6176, 6263, 6272, 6313, 7680, 7835, 7840, 7929, 7936, 7957, 7960, 7965, 7968, 8005, 8008, 8013, 8016, 8023, 8025, 8025, 8027, 8027, 8029, 8029, 8031, 8061, 8064, 8116, 8118, 8124, 8126, 8126, 8130, 8132, 8134, 8140, 8144, 8147, 8150, 8155, 8160, 8172, 8178, 8180, 8182, 8188, 8255, 8256, 8319, 8319, 8400, 8412, 8417, 8417, 8450, 8450, 8455, 8455, 8458, 8467, 8469, 8469, 8473, 8477, 8484, 8484, 8486, 8486, 8488, 8488, 8490, 8493, 8495, 8497, 8499, 8505, 8544, 8579, 12293, 12295, 12321, 12335, 12337, 12341, 12344, 12346, 12353, 12436, 12441, 12442, 12445, 12446, 12449, 12542, 12549, 12588, 12593, 12686, 12704, 12727, 13312, 19893, 19968, 40869, 40960, 42124, 44032, 55203, 63744, 64045, 64256, 64262, 64275, 64279, 64285, 64296, 64298, 64310, 64312, 64316, 64318, 64318, 64320, 64321, 64323, 64324, 64326, 64433, 64467, 64829, 64848, 64911, 64914, 64967, 65008, 65019, 65056, 65059, 65075, 65076, 65101, 65103, 65136, 65138, 65140, 65140, 65142, 65276, 65296, 65305, 65313, 65338, 65343, 65343, 65345, 65370, 65381, 65470, 65474, 65479, 65482, 65487, 65490, 65495, 65498, 65500,]; + /* + As per ECMAScript Language Specification 5th Edition, Section 7.6: ISyntaxToken Names and Identifiers + IdentifierStart :: + Can contain Unicode 6.2 categories: + Uppercase letter (Lu), + Lowercase letter (Ll), + Titlecase letter (Lt), + Modifier letter (Lm), + Other letter (Lo), or + Letter number (Nl). + IdentifierPart :: + Can contain IdentifierStart + Unicode 6.2 categories: + Non-spacing mark (Mn), + Combining spacing mark (Mc), + Decimal number (Nd), + Connector punctuation (Pc), + , or + . + + Codepoint ranges for ES5 Identifiers are extracted from the Unicode 6.2 specification at: + http://www.unicode.org/Public/6.2.0/ucd/UnicodeData.txt + */ + var unicodeES5IdentifierStart = [170, 170, 181, 181, 186, 186, 192, 214, 216, 246, 248, 705, 710, 721, 736, 740, 748, 748, 750, 750, 880, 884, 886, 887, 890, 893, 902, 902, 904, 906, 908, 908, 910, 929, 931, 1013, 1015, 1153, 1162, 1319, 1329, 1366, 1369, 1369, 1377, 1415, 1488, 1514, 1520, 1522, 1568, 1610, 1646, 1647, 1649, 1747, 1749, 1749, 1765, 1766, 1774, 1775, 1786, 1788, 1791, 1791, 1808, 1808, 1810, 1839, 1869, 1957, 1969, 1969, 1994, 2026, 2036, 2037, 2042, 2042, 2048, 2069, 2074, 2074, 2084, 2084, 2088, 2088, 2112, 2136, 2208, 2208, 2210, 2220, 2308, 2361, 2365, 2365, 2384, 2384, 2392, 2401, 2417, 2423, 2425, 2431, 2437, 2444, 2447, 2448, 2451, 2472, 2474, 2480, 2482, 2482, 2486, 2489, 2493, 2493, 2510, 2510, 2524, 2525, 2527, 2529, 2544, 2545, 2565, 2570, 2575, 2576, 2579, 2600, 2602, 2608, 2610, 2611, 2613, 2614, 2616, 2617, 2649, 2652, 2654, 2654, 2674, 2676, 2693, 2701, 2703, 2705, 2707, 2728, 2730, 2736, 2738, 2739, 2741, 2745, 2749, 2749, 2768, 2768, 2784, 2785, 2821, 2828, 2831, 2832, 2835, 2856, 2858, 2864, 2866, 2867, 2869, 2873, 2877, 2877, 2908, 2909, 2911, 2913, 2929, 2929, 2947, 2947, 2949, 2954, 2958, 2960, 2962, 2965, 2969, 2970, 2972, 2972, 2974, 2975, 2979, 2980, 2984, 2986, 2990, 3001, 3024, 3024, 3077, 3084, 3086, 3088, 3090, 3112, 3114, 3123, 3125, 3129, 3133, 3133, 3160, 3161, 3168, 3169, 3205, 3212, 3214, 3216, 3218, 3240, 3242, 3251, 3253, 3257, 3261, 3261, 3294, 3294, 3296, 3297, 3313, 3314, 3333, 3340, 3342, 3344, 3346, 3386, 3389, 3389, 3406, 3406, 3424, 3425, 3450, 3455, 3461, 3478, 3482, 3505, 3507, 3515, 3517, 3517, 3520, 3526, 3585, 3632, 3634, 3635, 3648, 3654, 3713, 3714, 3716, 3716, 3719, 3720, 3722, 3722, 3725, 3725, 3732, 3735, 3737, 3743, 3745, 3747, 3749, 3749, 3751, 3751, 3754, 3755, 3757, 3760, 3762, 3763, 3773, 3773, 3776, 3780, 3782, 3782, 3804, 3807, 3840, 3840, 3904, 3911, 3913, 3948, 3976, 3980, 4096, 4138, 4159, 4159, 4176, 4181, 4186, 4189, 4193, 4193, 4197, 4198, 4206, 4208, 4213, 4225, 4238, 4238, 4256, 4293, 4295, 4295, 4301, 4301, 4304, 4346, 4348, 4680, 4682, 4685, 4688, 4694, 4696, 4696, 4698, 4701, 4704, 4744, 4746, 4749, 4752, 4784, 4786, 4789, 4792, 4798, 4800, 4800, 4802, 4805, 4808, 4822, 4824, 4880, 4882, 4885, 4888, 4954, 4992, 5007, 5024, 5108, 5121, 5740, 5743, 5759, 5761, 5786, 5792, 5866, 5870, 5872, 5888, 5900, 5902, 5905, 5920, 5937, 5952, 5969, 5984, 5996, 5998, 6000, 6016, 6067, 6103, 6103, 6108, 6108, 6176, 6263, 6272, 6312, 6314, 6314, 6320, 6389, 6400, 6428, 6480, 6509, 6512, 6516, 6528, 6571, 6593, 6599, 6656, 6678, 6688, 6740, 6823, 6823, 6917, 6963, 6981, 6987, 7043, 7072, 7086, 7087, 7098, 7141, 7168, 7203, 7245, 7247, 7258, 7293, 7401, 7404, 7406, 7409, 7413, 7414, 7424, 7615, 7680, 7957, 7960, 7965, 7968, 8005, 8008, 8013, 8016, 8023, 8025, 8025, 8027, 8027, 8029, 8029, 8031, 8061, 8064, 8116, 8118, 8124, 8126, 8126, 8130, 8132, 8134, 8140, 8144, 8147, 8150, 8155, 8160, 8172, 8178, 8180, 8182, 8188, 8305, 8305, 8319, 8319, 8336, 8348, 8450, 8450, 8455, 8455, 8458, 8467, 8469, 8469, 8473, 8477, 8484, 8484, 8486, 8486, 8488, 8488, 8490, 8493, 8495, 8505, 8508, 8511, 8517, 8521, 8526, 8526, 8544, 8584, 11264, 11310, 11312, 11358, 11360, 11492, 11499, 11502, 11506, 11507, 11520, 11557, 11559, 11559, 11565, 11565, 11568, 11623, 11631, 11631, 11648, 11670, 11680, 11686, 11688, 11694, 11696, 11702, 11704, 11710, 11712, 11718, 11720, 11726, 11728, 11734, 11736, 11742, 11823, 11823, 12293, 12295, 12321, 12329, 12337, 12341, 12344, 12348, 12353, 12438, 12445, 12447, 12449, 12538, 12540, 12543, 12549, 12589, 12593, 12686, 12704, 12730, 12784, 12799, 13312, 19893, 19968, 40908, 40960, 42124, 42192, 42237, 42240, 42508, 42512, 42527, 42538, 42539, 42560, 42606, 42623, 42647, 42656, 42735, 42775, 42783, 42786, 42888, 42891, 42894, 42896, 42899, 42912, 42922, 43000, 43009, 43011, 43013, 43015, 43018, 43020, 43042, 43072, 43123, 43138, 43187, 43250, 43255, 43259, 43259, 43274, 43301, 43312, 43334, 43360, 43388, 43396, 43442, 43471, 43471, 43520, 43560, 43584, 43586, 43588, 43595, 43616, 43638, 43642, 43642, 43648, 43695, 43697, 43697, 43701, 43702, 43705, 43709, 43712, 43712, 43714, 43714, 43739, 43741, 43744, 43754, 43762, 43764, 43777, 43782, 43785, 43790, 43793, 43798, 43808, 43814, 43816, 43822, 43968, 44002, 44032, 55203, 55216, 55238, 55243, 55291, 63744, 64109, 64112, 64217, 64256, 64262, 64275, 64279, 64285, 64285, 64287, 64296, 64298, 64310, 64312, 64316, 64318, 64318, 64320, 64321, 64323, 64324, 64326, 64433, 64467, 64829, 64848, 64911, 64914, 64967, 65008, 65019, 65136, 65140, 65142, 65276, 65313, 65338, 65345, 65370, 65382, 65470, 65474, 65479, 65482, 65487, 65490, 65495, 65498, 65500,]; + var unicodeES5IdentifierPart = [170, 170, 181, 181, 186, 186, 192, 214, 216, 246, 248, 705, 710, 721, 736, 740, 748, 748, 750, 750, 768, 884, 886, 887, 890, 893, 902, 902, 904, 906, 908, 908, 910, 929, 931, 1013, 1015, 1153, 1155, 1159, 1162, 1319, 1329, 1366, 1369, 1369, 1377, 1415, 1425, 1469, 1471, 1471, 1473, 1474, 1476, 1477, 1479, 1479, 1488, 1514, 1520, 1522, 1552, 1562, 1568, 1641, 1646, 1747, 1749, 1756, 1759, 1768, 1770, 1788, 1791, 1791, 1808, 1866, 1869, 1969, 1984, 2037, 2042, 2042, 2048, 2093, 2112, 2139, 2208, 2208, 2210, 2220, 2276, 2302, 2304, 2403, 2406, 2415, 2417, 2423, 2425, 2431, 2433, 2435, 2437, 2444, 2447, 2448, 2451, 2472, 2474, 2480, 2482, 2482, 2486, 2489, 2492, 2500, 2503, 2504, 2507, 2510, 2519, 2519, 2524, 2525, 2527, 2531, 2534, 2545, 2561, 2563, 2565, 2570, 2575, 2576, 2579, 2600, 2602, 2608, 2610, 2611, 2613, 2614, 2616, 2617, 2620, 2620, 2622, 2626, 2631, 2632, 2635, 2637, 2641, 2641, 2649, 2652, 2654, 2654, 2662, 2677, 2689, 2691, 2693, 2701, 2703, 2705, 2707, 2728, 2730, 2736, 2738, 2739, 2741, 2745, 2748, 2757, 2759, 2761, 2763, 2765, 2768, 2768, 2784, 2787, 2790, 2799, 2817, 2819, 2821, 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12341, 12344, 12348, 12353, 12438, 12441, 12447, 12449, 12538, 12540, 12543, 12549, 12591, 12593, 12686, 12704, 12730, 12784, 12799, 13312, 19893, 19968, 40943, 40960, 42124, 42192, 42237, 42240, 42508, 42512, 42539, 42560, 42607, 42612, 42621, 42623, 42737, 42775, 42783, 42786, 42888, 42891, 42943, 42946, 42950, 42999, 43047, 43072, 43123, 43136, 43205, 43216, 43225, 43232, 43255, 43259, 43259, 43261, 43309, 43312, 43347, 43360, 43388, 43392, 43456, 43471, 43481, 43488, 43518, 43520, 43574, 43584, 43597, 43600, 43609, 43616, 43638, 43642, 43714, 43739, 43741, 43744, 43759, 43762, 43766, 43777, 43782, 43785, 43790, 43793, 43798, 43808, 43814, 43816, 43822, 43824, 43866, 43868, 43879, 43888, 44010, 44012, 44013, 44016, 44025, 44032, 55203, 55216, 55238, 55243, 55291, 63744, 64109, 64112, 64217, 64256, 64262, 64275, 64279, 64285, 64296, 64298, 64310, 64312, 64316, 64318, 64318, 64320, 64321, 64323, 64324, 64326, 64433, 64467, 64829, 64848, 64911, 64914, 64967, 65008, 65019, 65024, 65039, 65056, 65071, 65075, 65076, 65101, 65103, 65136, 65140, 65142, 65276, 65296, 65305, 65313, 65338, 65343, 65343, 65345, 65370, 65382, 65470, 65474, 65479, 65482, 65487, 65490, 65495, 65498, 65500, 65536, 65547, 65549, 65574, 65576, 65594, 65596, 65597, 65599, 65613, 65616, 65629, 65664, 65786, 65856, 65908, 66045, 66045, 66176, 66204, 66208, 66256, 66272, 66272, 66304, 66335, 66349, 66378, 66384, 66426, 66432, 66461, 66464, 66499, 66504, 66511, 66513, 66517, 66560, 66717, 66720, 66729, 66736, 66771, 66776, 66811, 66816, 66855, 66864, 66915, 67072, 67382, 67392, 67413, 67424, 67431, 67584, 67589, 67592, 67592, 67594, 67637, 67639, 67640, 67644, 67644, 67647, 67669, 67680, 67702, 67712, 67742, 67808, 67826, 67828, 67829, 67840, 67861, 67872, 67897, 67968, 68023, 68030, 68031, 68096, 68099, 68101, 68102, 68108, 68115, 68117, 68119, 68121, 68149, 68152, 68154, 68159, 68159, 68192, 68220, 68224, 68252, 68288, 68295, 68297, 68326, 68352, 68405, 68416, 68437, 68448, 68466, 68480, 68497, 68608, 68680, 68736, 68786, 68800, 68850, 68864, 68903, 68912, 68921, 69376, 69404, 69415, 69415, 69424, 69456, 69600, 69622, 69632, 69702, 69734, 69743, 69759, 69818, 69840, 69864, 69872, 69881, 69888, 69940, 69942, 69951, 69956, 69958, 69968, 70003, 70006, 70006, 70016, 70084, 70089, 70092, 70096, 70106, 70108, 70108, 70144, 70161, 70163, 70199, 70206, 70206, 70272, 70278, 70280, 70280, 70282, 70285, 70287, 70301, 70303, 70312, 70320, 70378, 70384, 70393, 70400, 70403, 70405, 70412, 70415, 70416, 70419, 70440, 70442, 70448, 70450, 70451, 70453, 70457, 70459, 70468, 70471, 70472, 70475, 70477, 70480, 70480, 70487, 70487, 70493, 70499, 70502, 70508, 70512, 70516, 70656, 70730, 70736, 70745, 70750, 70751, 70784, 70853, 70855, 70855, 70864, 70873, 71040, 71093, 71096, 71104, 71128, 71133, 71168, 71232, 71236, 71236, 71248, 71257, 71296, 71352, 71360, 71369, 71424, 71450, 71453, 71467, 71472, 71481, 71680, 71738, 71840, 71913, 71935, 71935, 72096, 72103, 72106, 72151, 72154, 72161, 72163, 72164, 72192, 72254, 72263, 72263, 72272, 72345, 72349, 72349, 72384, 72440, 72704, 72712, 72714, 72758, 72760, 72768, 72784, 72793, 72818, 72847, 72850, 72871, 72873, 72886, 72960, 72966, 72968, 72969, 72971, 73014, 73018, 73018, 73020, 73021, 73023, 73031, 73040, 73049, 73056, 73061, 73063, 73064, 73066, 73102, 73104, 73105, 73107, 73112, 73120, 73129, 73440, 73462, 73728, 74649, 74752, 74862, 74880, 75075, 77824, 78894, 82944, 83526, 92160, 92728, 92736, 92766, 92768, 92777, 92880, 92909, 92912, 92916, 92928, 92982, 92992, 92995, 93008, 93017, 93027, 93047, 93053, 93071, 93760, 93823, 93952, 94026, 94031, 94087, 94095, 94111, 94176, 94177, 94179, 94179, 94208, 100343, 100352, 101106, 110592, 110878, 110928, 110930, 110948, 110951, 110960, 111355, 113664, 113770, 113776, 113788, 113792, 113800, 113808, 113817, 113821, 113822, 119141, 119145, 119149, 119154, 119163, 119170, 119173, 119179, 119210, 119213, 119362, 119364, 119808, 119892, 119894, 119964, 119966, 119967, 119970, 119970, 119973, 119974, 119977, 119980, 119982, 119993, 119995, 119995, 119997, 120003, 120005, 120069, 120071, 120074, 120077, 120084, 120086, 120092, 120094, 120121, 120123, 120126, 120128, 120132, 120134, 120134, 120138, 120144, 120146, 120485, 120488, 120512, 120514, 120538, 120540, 120570, 120572, 120596, 120598, 120628, 120630, 120654, 120656, 120686, 120688, 120712, 120714, 120744, 120746, 120770, 120772, 120779, 120782, 120831, 121344, 121398, 121403, 121452, 121461, 121461, 121476, 121476, 121499, 121503, 121505, 121519, 122880, 122886, 122888, 122904, 122907, 122913, 122915, 122916, 122918, 122922, 123136, 123180, 123184, 123197, 123200, 123209, 123214, 123214, 123584, 123641, 124928, 125124, 125136, 125142, 125184, 125259, 125264, 125273, 126464, 126467, 126469, 126495, 126497, 126498, 126500, 126500, 126503, 126503, 126505, 126514, 126516, 126519, 126521, 126521, 126523, 126523, 126530, 126530, 126535, 126535, 126537, 126537, 126539, 126539, 126541, 126543, 126545, 126546, 126548, 126548, 126551, 126551, 126553, 126553, 126555, 126555, 126557, 126557, 126559, 126559, 126561, 126562, 126564, 126564, 126567, 126570, 126572, 126578, 126580, 126583, 126585, 126588, 126590, 126590, 126592, 126601, 126603, 126619, 126625, 126627, 126629, 126633, 126635, 126651, 131072, 173782, 173824, 177972, 177984, 178205, 178208, 183969, 183984, 191456, 194560, 195101, 917760, 917999]; + /** + * Test for whether a single line comment's text contains a directive. + */ + var commentDirectiveRegExSingleLine = /^\s*\/\/\/?\s*@(ts-expect-error|ts-ignore)/; + /** + * Test for whether a multi-line comment's last line contains a directive. + */ + var commentDirectiveRegExMultiLine = /^\s*(?:\/|\*)*\s*@(ts-expect-error|ts-ignore)/; + function lookupInUnicodeMap(code, map) { + // Bail out quickly if it couldn't possibly be in the map. + if (code < map[0]) { + return false; + } + // Perform binary search in one of the Unicode range maps + var lo = 0; + var hi = map.length; + var mid; + while (lo + 1 < hi) { + mid = lo + (hi - lo) / 2; + // mid has to be even to catch a range's beginning + mid -= mid % 2; + if (map[mid] <= code && code <= map[mid + 1]) { + return true; + } + if (code < map[mid]) { + hi = mid; + } + else { + lo = mid + 2; + } + } + return false; + } + /* @internal */ function isUnicodeIdentifierStart(code, languageVersion) { + return languageVersion >= 2 /* ES2015 */ ? + lookupInUnicodeMap(code, unicodeESNextIdentifierStart) : + languageVersion === 1 /* ES5 */ ? lookupInUnicodeMap(code, unicodeES5IdentifierStart) : + lookupInUnicodeMap(code, unicodeES3IdentifierStart); + } + ts.isUnicodeIdentifierStart = isUnicodeIdentifierStart; + function isUnicodeIdentifierPart(code, languageVersion) { + return languageVersion >= 2 /* ES2015 */ ? + lookupInUnicodeMap(code, unicodeESNextIdentifierPart) : + languageVersion === 1 /* ES5 */ ? lookupInUnicodeMap(code, unicodeES5IdentifierPart) : + lookupInUnicodeMap(code, unicodeES3IdentifierPart); + } + function makeReverseMap(source) { + var result = []; + source.forEach(function (value, name) { + result[value] = name; + }); + return result; + } + var tokenStrings = makeReverseMap(textToToken); + function tokenToString(t) { + return tokenStrings[t]; + } + ts.tokenToString = tokenToString; + /* @internal */ + function stringToToken(s) { + return textToToken.get(s); + } + ts.stringToToken = stringToToken; + /* @internal */ + function computeLineStarts(text) { + var result = new Array(); + var pos = 0; + var lineStart = 0; + while (pos < text.length) { + var ch = text.charCodeAt(pos); + pos++; + switch (ch) { + case 13 /* carriageReturn */: + if (text.charCodeAt(pos) === 10 /* lineFeed */) { + pos++; + } + // falls through + case 10 /* lineFeed */: + result.push(lineStart); + lineStart = pos; + break; + default: + if (ch > 127 /* maxAsciiCharacter */ && isLineBreak(ch)) { + result.push(lineStart); + lineStart = pos; + } + break; + } + } + result.push(lineStart); + return result; + } + ts.computeLineStarts = computeLineStarts; + function getPositionOfLineAndCharacter(sourceFile, line, character, allowEdits) { + return sourceFile.getPositionOfLineAndCharacter ? + sourceFile.getPositionOfLineAndCharacter(line, character, allowEdits) : + computePositionOfLineAndCharacter(getLineStarts(sourceFile), line, character, sourceFile.text, allowEdits); + } + ts.getPositionOfLineAndCharacter = getPositionOfLineAndCharacter; + /* @internal */ + function computePositionOfLineAndCharacter(lineStarts, line, character, debugText, allowEdits) { + if (line < 0 || line >= lineStarts.length) { + if (allowEdits) { + // Clamp line to nearest allowable value + line = line < 0 ? 0 : line >= lineStarts.length ? lineStarts.length - 1 : line; + } + else { + ts.Debug.fail("Bad line number. Line: " + line + ", lineStarts.length: " + lineStarts.length + " , line map is correct? " + (debugText !== undefined ? ts.arraysEqual(lineStarts, computeLineStarts(debugText)) : "unknown")); + } + } + var res = lineStarts[line] + character; + if (allowEdits) { + // Clamp to nearest allowable values to allow the underlying to be edited without crashing (accuracy is lost, instead) + // TODO: Somehow track edits between file as it was during the creation of sourcemap we have and the current file and + // apply them to the computed position to improve accuracy + return res > lineStarts[line + 1] ? lineStarts[line + 1] : typeof debugText === "string" && res > debugText.length ? debugText.length : res; + } + if (line < lineStarts.length - 1) { + ts.Debug.assert(res < lineStarts[line + 1]); + } + else if (debugText !== undefined) { + ts.Debug.assert(res <= debugText.length); // Allow single character overflow for trailing newline + } + return res; + } + ts.computePositionOfLineAndCharacter = computePositionOfLineAndCharacter; + /* @internal */ + function getLineStarts(sourceFile) { + return sourceFile.lineMap || (sourceFile.lineMap = computeLineStarts(sourceFile.text)); + } + ts.getLineStarts = getLineStarts; + /* @internal */ + function computeLineAndCharacterOfPosition(lineStarts, position) { + var lineNumber = computeLineOfPosition(lineStarts, position); + return { + line: lineNumber, + character: position - lineStarts[lineNumber] + }; + } + ts.computeLineAndCharacterOfPosition = computeLineAndCharacterOfPosition; + /** + * @internal + * We assume the first line starts at position 0 and 'position' is non-negative. + */ + function computeLineOfPosition(lineStarts, position, lowerBound) { + var lineNumber = ts.binarySearch(lineStarts, position, ts.identity, ts.compareValues, lowerBound); + if (lineNumber < 0) { + // If the actual position was not found, + // the binary search returns the 2's-complement of the next line start + // e.g. if the line starts at [5, 10, 23, 80] and the position requested was 20 + // then the search will return -2. + // + // We want the index of the previous line start, so we subtract 1. + // Review 2's-complement if this is confusing. + lineNumber = ~lineNumber - 1; + ts.Debug.assert(lineNumber !== -1, "position cannot precede the beginning of the file"); + } + return lineNumber; + } + ts.computeLineOfPosition = computeLineOfPosition; + /** @internal */ + function getLinesBetweenPositions(sourceFile, pos1, pos2) { + if (pos1 === pos2) + return 0; + var lineStarts = getLineStarts(sourceFile); + var lower = Math.min(pos1, pos2); + var isNegative = lower === pos2; + var upper = isNegative ? pos1 : pos2; + var lowerLine = computeLineOfPosition(lineStarts, lower); + var upperLine = computeLineOfPosition(lineStarts, upper, lowerLine); + return isNegative ? lowerLine - upperLine : upperLine - lowerLine; + } + ts.getLinesBetweenPositions = getLinesBetweenPositions; + function getLineAndCharacterOfPosition(sourceFile, position) { + return computeLineAndCharacterOfPosition(getLineStarts(sourceFile), position); + } + ts.getLineAndCharacterOfPosition = getLineAndCharacterOfPosition; + function isWhiteSpaceLike(ch) { + return isWhiteSpaceSingleLine(ch) || isLineBreak(ch); + } + ts.isWhiteSpaceLike = isWhiteSpaceLike; + /** Does not include line breaks. For that, see isWhiteSpaceLike. */ + function isWhiteSpaceSingleLine(ch) { + // Note: nextLine is in the Zs space, and should be considered to be a whitespace. + // It is explicitly not a line-break as it isn't in the exact set specified by EcmaScript. + return ch === 32 /* space */ || + ch === 9 /* tab */ || + ch === 11 /* verticalTab */ || + ch === 12 /* formFeed */ || + ch === 160 /* nonBreakingSpace */ || + ch === 133 /* nextLine */ || + ch === 5760 /* ogham */ || + ch >= 8192 /* enQuad */ && ch <= 8203 /* zeroWidthSpace */ || + ch === 8239 /* narrowNoBreakSpace */ || + ch === 8287 /* mathematicalSpace */ || + ch === 12288 /* ideographicSpace */ || + ch === 65279 /* byteOrderMark */; + } + ts.isWhiteSpaceSingleLine = isWhiteSpaceSingleLine; + function isLineBreak(ch) { + // ES5 7.3: + // The ECMAScript line terminator characters are listed in Table 3. + // Table 3: Line Terminator Characters + // Code Unit Value Name Formal Name + // \u000A Line Feed + // \u000D Carriage Return + // \u2028 Line separator + // \u2029 Paragraph separator + // Only the characters in Table 3 are treated as line terminators. Other new line or line + // breaking characters are treated as white space but not as line terminators. + return ch === 10 /* lineFeed */ || + ch === 13 /* carriageReturn */ || + ch === 8232 /* lineSeparator */ || + ch === 8233 /* paragraphSeparator */; + } + ts.isLineBreak = isLineBreak; + function isDigit(ch) { + return ch >= 48 /* _0 */ && ch <= 57 /* _9 */; + } + function isHexDigit(ch) { + return isDigit(ch) || ch >= 65 /* A */ && ch <= 70 /* F */ || ch >= 97 /* a */ && ch <= 102 /* f */; + } + function isCodePoint(code) { + return code <= 0x10FFFF; + } + /* @internal */ + function isOctalDigit(ch) { + return ch >= 48 /* _0 */ && ch <= 55 /* _7 */; + } + ts.isOctalDigit = isOctalDigit; + function couldStartTrivia(text, pos) { + // Keep in sync with skipTrivia + var ch = text.charCodeAt(pos); + switch (ch) { + case 13 /* carriageReturn */: + case 10 /* lineFeed */: + case 9 /* tab */: + case 11 /* verticalTab */: + case 12 /* formFeed */: + case 32 /* space */: + case 47 /* slash */: + // starts of normal trivia + // falls through + case 60 /* lessThan */: + case 124 /* bar */: + case 61 /* equals */: + case 62 /* greaterThan */: + // Starts of conflict marker trivia + return true; + case 35 /* hash */: + // Only if its the beginning can we have #! trivia + return pos === 0; + default: + return ch > 127 /* maxAsciiCharacter */; + } + } + ts.couldStartTrivia = couldStartTrivia; + /* @internal */ + function skipTrivia(text, pos, stopAfterLineBreak, stopAtComments) { + if (stopAtComments === void 0) { stopAtComments = false; } + if (ts.positionIsSynthesized(pos)) { + return pos; + } + // Keep in sync with couldStartTrivia + while (true) { + var ch = text.charCodeAt(pos); + switch (ch) { + case 13 /* carriageReturn */: + if (text.charCodeAt(pos + 1) === 10 /* lineFeed */) { + pos++; + } + // falls through + case 10 /* lineFeed */: + pos++; + if (stopAfterLineBreak) { + return pos; + } + continue; + case 9 /* tab */: + case 11 /* verticalTab */: + case 12 /* formFeed */: + case 32 /* space */: + pos++; + continue; + case 47 /* slash */: + if (stopAtComments) { + break; + } + if (text.charCodeAt(pos + 1) === 47 /* slash */) { + pos += 2; + while (pos < text.length) { + if (isLineBreak(text.charCodeAt(pos))) { + break; + } + pos++; + } + continue; + } + if (text.charCodeAt(pos + 1) === 42 /* asterisk */) { + pos += 2; + while (pos < text.length) { + if (text.charCodeAt(pos) === 42 /* asterisk */ && text.charCodeAt(pos + 1) === 47 /* slash */) { + pos += 2; + break; + } + pos++; + } + continue; + } + break; + case 60 /* lessThan */: + case 124 /* bar */: + case 61 /* equals */: + case 62 /* greaterThan */: + if (isConflictMarkerTrivia(text, pos)) { + pos = scanConflictMarkerTrivia(text, pos); + continue; + } + break; + case 35 /* hash */: + if (pos === 0 && isShebangTrivia(text, pos)) { + pos = scanShebangTrivia(text, pos); + continue; + } + break; + default: + if (ch > 127 /* maxAsciiCharacter */ && (isWhiteSpaceLike(ch))) { + pos++; + continue; + } + break; + } + return pos; + } + } + ts.skipTrivia = skipTrivia; + // All conflict markers consist of the same character repeated seven times. If it is + // a <<<<<<< or >>>>>>> marker then it is also followed by a space. + var mergeConflictMarkerLength = "<<<<<<<".length; + function isConflictMarkerTrivia(text, pos) { + ts.Debug.assert(pos >= 0); + // Conflict markers must be at the start of a line. + if (pos === 0 || isLineBreak(text.charCodeAt(pos - 1))) { + var ch = text.charCodeAt(pos); + if ((pos + mergeConflictMarkerLength) < text.length) { + for (var i = 0; i < mergeConflictMarkerLength; i++) { + if (text.charCodeAt(pos + i) !== ch) { + return false; + } + } + return ch === 61 /* equals */ || + text.charCodeAt(pos + mergeConflictMarkerLength) === 32 /* space */; + } + } + return false; + } + function scanConflictMarkerTrivia(text, pos, error) { + if (error) { + error(ts.Diagnostics.Merge_conflict_marker_encountered, pos, mergeConflictMarkerLength); + } + var ch = text.charCodeAt(pos); + var len = text.length; + if (ch === 60 /* lessThan */ || ch === 62 /* greaterThan */) { + while (pos < len && !isLineBreak(text.charCodeAt(pos))) { + pos++; + } + } + else { + ts.Debug.assert(ch === 124 /* bar */ || ch === 61 /* equals */); + // Consume everything from the start of a ||||||| or ======= marker to the start + // of the next ======= or >>>>>>> marker. + while (pos < len) { + var currentChar = text.charCodeAt(pos); + if ((currentChar === 61 /* equals */ || currentChar === 62 /* greaterThan */) && currentChar !== ch && isConflictMarkerTrivia(text, pos)) { + break; + } + pos++; + } + } + return pos; + } + var shebangTriviaRegex = /^#!.*/; + /*@internal*/ + function isShebangTrivia(text, pos) { + // Shebangs check must only be done at the start of the file + ts.Debug.assert(pos === 0); + return shebangTriviaRegex.test(text); + } + ts.isShebangTrivia = isShebangTrivia; + /*@internal*/ + function scanShebangTrivia(text, pos) { + var shebang = shebangTriviaRegex.exec(text)[0]; + pos = pos + shebang.length; + return pos; + } + ts.scanShebangTrivia = scanShebangTrivia; + /** + * Invokes a callback for each comment range following the provided position. + * + * Single-line comment ranges include the leading double-slash characters but not the ending + * line break. Multi-line comment ranges include the leading slash-asterisk and trailing + * asterisk-slash characters. + * + * @param reduce If true, accumulates the result of calling the callback in a fashion similar + * to reduceLeft. If false, iteration stops when the callback returns a truthy value. + * @param text The source text to scan. + * @param pos The position at which to start scanning. + * @param trailing If false, whitespace is skipped until the first line break and comments + * between that location and the next token are returned. If true, comments occurring + * between the given position and the next line break are returned. + * @param cb The callback to execute as each comment range is encountered. + * @param state A state value to pass to each iteration of the callback. + * @param initial An initial value to pass when accumulating results (when "reduce" is true). + * @returns If "reduce" is true, the accumulated value. If "reduce" is false, the first truthy + * return value of the callback. + */ + function iterateCommentRanges(reduce, text, pos, trailing, cb, state, initial) { + var pendingPos; + var pendingEnd; + var pendingKind; + var pendingHasTrailingNewLine; + var hasPendingCommentRange = false; + var collecting = trailing; + var accumulator = initial; + if (pos === 0) { + collecting = true; + var shebang = getShebang(text); + if (shebang) { + pos = shebang.length; + } + } + scan: while (pos >= 0 && pos < text.length) { + var ch = text.charCodeAt(pos); + switch (ch) { + case 13 /* carriageReturn */: + if (text.charCodeAt(pos + 1) === 10 /* lineFeed */) { + pos++; + } + // falls through + case 10 /* lineFeed */: + pos++; + if (trailing) { + break scan; + } + collecting = true; + if (hasPendingCommentRange) { + pendingHasTrailingNewLine = true; + } + continue; + case 9 /* tab */: + case 11 /* verticalTab */: + case 12 /* formFeed */: + case 32 /* space */: + pos++; + continue; + case 47 /* slash */: + var nextChar = text.charCodeAt(pos + 1); + var hasTrailingNewLine = false; + if (nextChar === 47 /* slash */ || nextChar === 42 /* asterisk */) { + var kind = nextChar === 47 /* slash */ ? 2 /* SingleLineCommentTrivia */ : 3 /* MultiLineCommentTrivia */; + var startPos = pos; + pos += 2; + if (nextChar === 47 /* slash */) { + while (pos < text.length) { + if (isLineBreak(text.charCodeAt(pos))) { + hasTrailingNewLine = true; + break; + } + pos++; + } + } + else { + while (pos < text.length) { + if (text.charCodeAt(pos) === 42 /* asterisk */ && text.charCodeAt(pos + 1) === 47 /* slash */) { + pos += 2; + break; + } + pos++; + } + } + if (collecting) { + if (hasPendingCommentRange) { + accumulator = cb(pendingPos, pendingEnd, pendingKind, pendingHasTrailingNewLine, state, accumulator); + if (!reduce && accumulator) { + // If we are not reducing and we have a truthy result, return it. + return accumulator; + } + } + pendingPos = startPos; + pendingEnd = pos; + pendingKind = kind; + pendingHasTrailingNewLine = hasTrailingNewLine; + hasPendingCommentRange = true; + } + continue; + } + break scan; + default: + if (ch > 127 /* maxAsciiCharacter */ && (isWhiteSpaceLike(ch))) { + if (hasPendingCommentRange && isLineBreak(ch)) { + pendingHasTrailingNewLine = true; + } + pos++; + continue; + } + break scan; + } + } + if (hasPendingCommentRange) { + accumulator = cb(pendingPos, pendingEnd, pendingKind, pendingHasTrailingNewLine, state, accumulator); + } + return accumulator; + } + function forEachLeadingCommentRange(text, pos, cb, state) { + return iterateCommentRanges(/*reduce*/ false, text, pos, /*trailing*/ false, cb, state); + } + ts.forEachLeadingCommentRange = forEachLeadingCommentRange; + function forEachTrailingCommentRange(text, pos, cb, state) { + return iterateCommentRanges(/*reduce*/ false, text, pos, /*trailing*/ true, cb, state); + } + ts.forEachTrailingCommentRange = forEachTrailingCommentRange; + function reduceEachLeadingCommentRange(text, pos, cb, state, initial) { + return iterateCommentRanges(/*reduce*/ true, text, pos, /*trailing*/ false, cb, state, initial); + } + ts.reduceEachLeadingCommentRange = reduceEachLeadingCommentRange; + function reduceEachTrailingCommentRange(text, pos, cb, state, initial) { + return iterateCommentRanges(/*reduce*/ true, text, pos, /*trailing*/ true, cb, state, initial); + } + ts.reduceEachTrailingCommentRange = reduceEachTrailingCommentRange; + function appendCommentRange(pos, end, kind, hasTrailingNewLine, _state, comments) { + if (!comments) { + comments = []; + } + comments.push({ kind: kind, pos: pos, end: end, hasTrailingNewLine: hasTrailingNewLine }); + return comments; + } + function getLeadingCommentRanges(text, pos) { + return reduceEachLeadingCommentRange(text, pos, appendCommentRange, /*state*/ undefined, /*initial*/ undefined); + } + ts.getLeadingCommentRanges = getLeadingCommentRanges; + function getTrailingCommentRanges(text, pos) { + return reduceEachTrailingCommentRange(text, pos, appendCommentRange, /*state*/ undefined, /*initial*/ undefined); + } + ts.getTrailingCommentRanges = getTrailingCommentRanges; + /** Optionally, get the shebang */ + function getShebang(text) { + var match = shebangTriviaRegex.exec(text); + if (match) { + return match[0]; + } + } + ts.getShebang = getShebang; + function isIdentifierStart(ch, languageVersion) { + return ch >= 65 /* A */ && ch <= 90 /* Z */ || ch >= 97 /* a */ && ch <= 122 /* z */ || + ch === 36 /* $ */ || ch === 95 /* _ */ || + ch > 127 /* maxAsciiCharacter */ && isUnicodeIdentifierStart(ch, languageVersion); + } + ts.isIdentifierStart = isIdentifierStart; + function isIdentifierPart(ch, languageVersion, identifierVariant) { + return ch >= 65 /* A */ && ch <= 90 /* Z */ || ch >= 97 /* a */ && ch <= 122 /* z */ || + ch >= 48 /* _0 */ && ch <= 57 /* _9 */ || ch === 36 /* $ */ || ch === 95 /* _ */ || + // "-" and ":" are valid in JSX Identifiers + (identifierVariant === 1 /* JSX */ ? (ch === 45 /* minus */ || ch === 58 /* colon */) : false) || + ch > 127 /* maxAsciiCharacter */ && isUnicodeIdentifierPart(ch, languageVersion); + } + ts.isIdentifierPart = isIdentifierPart; + /* @internal */ + function isIdentifierText(name, languageVersion, identifierVariant) { + var ch = codePointAt(name, 0); + if (!isIdentifierStart(ch, languageVersion)) { + return false; + } + for (var i = charSize(ch); i < name.length; i += charSize(ch)) { + if (!isIdentifierPart(ch = codePointAt(name, i), languageVersion, identifierVariant)) { + return false; + } + } + return true; + } + ts.isIdentifierText = isIdentifierText; + // Creates a scanner over a (possibly unspecified) range of a piece of text. + function createScanner(languageVersion, skipTrivia, languageVariant, textInitial, onError, start, length) { + if (languageVariant === void 0) { languageVariant = 0 /* Standard */; } + var text = textInitial; + // Current position (end position of text of current token) + var pos; + // end of text + var end; + // Start position of whitespace before current token + var startPos; + // Start position of text of current token + var tokenPos; + var token; + var tokenValue; + var tokenFlags; + var commentDirectives; + var inJSDocType = 0; + setText(text, start, length); + var scanner = { + getStartPos: function () { return startPos; }, + getTextPos: function () { return pos; }, + getToken: function () { return token; }, + getTokenPos: function () { return tokenPos; }, + getTokenText: function () { return text.substring(tokenPos, pos); }, + getTokenValue: function () { return tokenValue; }, + hasUnicodeEscape: function () { return (tokenFlags & 1024 /* UnicodeEscape */) !== 0; }, + hasExtendedUnicodeEscape: function () { return (tokenFlags & 8 /* ExtendedUnicodeEscape */) !== 0; }, + hasPrecedingLineBreak: function () { return (tokenFlags & 1 /* PrecedingLineBreak */) !== 0; }, + isIdentifier: function () { return token === 75 /* Identifier */ || token > 112 /* LastReservedWord */; }, + isReservedWord: function () { return token >= 77 /* FirstReservedWord */ && token <= 112 /* LastReservedWord */; }, + isUnterminated: function () { return (tokenFlags & 4 /* Unterminated */) !== 0; }, + getCommentDirectives: function () { return commentDirectives; }, + getTokenFlags: function () { return tokenFlags; }, + reScanGreaterToken: reScanGreaterToken, + reScanSlashToken: reScanSlashToken, + reScanTemplateToken: reScanTemplateToken, + reScanTemplateHeadOrNoSubstitutionTemplate: reScanTemplateHeadOrNoSubstitutionTemplate, + scanJsxIdentifier: scanJsxIdentifier, + scanJsxAttributeValue: scanJsxAttributeValue, + reScanJsxAttributeValue: reScanJsxAttributeValue, + reScanJsxToken: reScanJsxToken, + reScanLessThanToken: reScanLessThanToken, + reScanQuestionToken: reScanQuestionToken, + scanJsxToken: scanJsxToken, + scanJsDocToken: scanJsDocToken, + scan: scan, + getText: getText, + clearCommentDirectives: clearCommentDirectives, + setText: setText, + setScriptTarget: setScriptTarget, + setLanguageVariant: setLanguageVariant, + setOnError: setOnError, + setTextPos: setTextPos, + setInJSDocType: setInJSDocType, + tryScan: tryScan, + lookAhead: lookAhead, + scanRange: scanRange, + }; + if (ts.Debug.isDebugging) { + Object.defineProperty(scanner, "__debugShowCurrentPositionInText", { + get: function () { + var text = scanner.getText(); + return text.slice(0, scanner.getStartPos()) + "║" + text.slice(scanner.getStartPos()); + }, + }); + } + return scanner; + function error(message, errPos, length) { + if (errPos === void 0) { errPos = pos; } + if (onError) { + var oldPos = pos; + pos = errPos; + onError(message, length || 0); + pos = oldPos; + } + } + function scanNumberFragment() { + var start = pos; + var allowSeparator = false; + var isPreviousTokenSeparator = false; + var result = ""; + while (true) { + var ch = text.charCodeAt(pos); + if (ch === 95 /* _ */) { + tokenFlags |= 512 /* ContainsSeparator */; + if (allowSeparator) { + allowSeparator = false; + isPreviousTokenSeparator = true; + result += text.substring(start, pos); + } + else if (isPreviousTokenSeparator) { + error(ts.Diagnostics.Multiple_consecutive_numeric_separators_are_not_permitted, pos, 1); + } + else { + error(ts.Diagnostics.Numeric_separators_are_not_allowed_here, pos, 1); + } + pos++; + start = pos; + continue; + } + if (isDigit(ch)) { + allowSeparator = true; + isPreviousTokenSeparator = false; + pos++; + continue; + } + break; + } + if (text.charCodeAt(pos - 1) === 95 /* _ */) { + error(ts.Diagnostics.Numeric_separators_are_not_allowed_here, pos - 1, 1); + } + return result + text.substring(start, pos); + } + function scanNumber() { + var start = pos; + var mainFragment = scanNumberFragment(); + var decimalFragment; + var scientificFragment; + if (text.charCodeAt(pos) === 46 /* dot */) { + pos++; + decimalFragment = scanNumberFragment(); + } + var end = pos; + if (text.charCodeAt(pos) === 69 /* E */ || text.charCodeAt(pos) === 101 /* e */) { + pos++; + tokenFlags |= 16 /* Scientific */; + if (text.charCodeAt(pos) === 43 /* plus */ || text.charCodeAt(pos) === 45 /* minus */) + pos++; + var preNumericPart = pos; + var finalFragment = scanNumberFragment(); + if (!finalFragment) { + error(ts.Diagnostics.Digit_expected); + } + else { + scientificFragment = text.substring(end, preNumericPart) + finalFragment; + end = pos; + } + } + var result; + if (tokenFlags & 512 /* ContainsSeparator */) { + result = mainFragment; + if (decimalFragment) { + result += "." + decimalFragment; + } + if (scientificFragment) { + result += scientificFragment; + } + } + else { + result = text.substring(start, end); // No need to use all the fragments; no _ removal needed + } + if (decimalFragment !== undefined || tokenFlags & 16 /* Scientific */) { + checkForIdentifierStartAfterNumericLiteral(start, decimalFragment === undefined && !!(tokenFlags & 16 /* Scientific */)); + return { + type: 8 /* NumericLiteral */, + value: "" + +result // if value is not an integer, it can be safely coerced to a number + }; + } + else { + tokenValue = result; + var type = checkBigIntSuffix(); // if value is an integer, check whether it is a bigint + checkForIdentifierStartAfterNumericLiteral(start); + return { type: type, value: tokenValue }; + } + } + function checkForIdentifierStartAfterNumericLiteral(numericStart, isScientific) { + if (!isIdentifierStart(codePointAt(text, pos), languageVersion)) { + return; + } + var identifierStart = pos; + var length = scanIdentifierParts().length; + if (length === 1 && text[identifierStart] === "n") { + if (isScientific) { + error(ts.Diagnostics.A_bigint_literal_cannot_use_exponential_notation, numericStart, identifierStart - numericStart + 1); + } + else { + error(ts.Diagnostics.A_bigint_literal_must_be_an_integer, numericStart, identifierStart - numericStart + 1); + } + } + else { + error(ts.Diagnostics.An_identifier_or_keyword_cannot_immediately_follow_a_numeric_literal, identifierStart, length); + pos = identifierStart; + } + } + function scanOctalDigits() { + var start = pos; + while (isOctalDigit(text.charCodeAt(pos))) { + pos++; + } + return +(text.substring(start, pos)); + } + /** + * Scans the given number of hexadecimal digits in the text, + * returning -1 if the given number is unavailable. + */ + function scanExactNumberOfHexDigits(count, canHaveSeparators) { + var valueString = scanHexDigits(/*minCount*/ count, /*scanAsManyAsPossible*/ false, canHaveSeparators); + return valueString ? parseInt(valueString, 16) : -1; + } + /** + * Scans as many hexadecimal digits as are available in the text, + * returning "" if the given number of digits was unavailable. + */ + function scanMinimumNumberOfHexDigits(count, canHaveSeparators) { + return scanHexDigits(/*minCount*/ count, /*scanAsManyAsPossible*/ true, canHaveSeparators); + } + function scanHexDigits(minCount, scanAsManyAsPossible, canHaveSeparators) { + var valueChars = []; + var allowSeparator = false; + var isPreviousTokenSeparator = false; + while (valueChars.length < minCount || scanAsManyAsPossible) { + var ch = text.charCodeAt(pos); + if (canHaveSeparators && ch === 95 /* _ */) { + tokenFlags |= 512 /* ContainsSeparator */; + if (allowSeparator) { + allowSeparator = false; + isPreviousTokenSeparator = true; + } + else if (isPreviousTokenSeparator) { + error(ts.Diagnostics.Multiple_consecutive_numeric_separators_are_not_permitted, pos, 1); + } + else { + error(ts.Diagnostics.Numeric_separators_are_not_allowed_here, pos, 1); + } + pos++; + continue; + } + allowSeparator = canHaveSeparators; + if (ch >= 65 /* A */ && ch <= 70 /* F */) { + ch += 97 /* a */ - 65 /* A */; // standardize hex literals to lowercase + } + else if (!((ch >= 48 /* _0 */ && ch <= 57 /* _9 */) || + (ch >= 97 /* a */ && ch <= 102 /* f */))) { + break; + } + valueChars.push(ch); + pos++; + isPreviousTokenSeparator = false; + } + if (valueChars.length < minCount) { + valueChars = []; + } + if (text.charCodeAt(pos - 1) === 95 /* _ */) { + error(ts.Diagnostics.Numeric_separators_are_not_allowed_here, pos - 1, 1); + } + return String.fromCharCode.apply(String, valueChars); + } + function scanString(jsxAttributeString) { + if (jsxAttributeString === void 0) { jsxAttributeString = false; } + var quote = text.charCodeAt(pos); + pos++; + var result = ""; + var start = pos; + while (true) { + if (pos >= end) { + result += text.substring(start, pos); + tokenFlags |= 4 /* Unterminated */; + error(ts.Diagnostics.Unterminated_string_literal); + break; + } + var ch = text.charCodeAt(pos); + if (ch === quote) { + result += text.substring(start, pos); + pos++; + break; + } + if (ch === 92 /* backslash */ && !jsxAttributeString) { + result += text.substring(start, pos); + result += scanEscapeSequence(); + start = pos; + continue; + } + if (isLineBreak(ch) && !jsxAttributeString) { + result += text.substring(start, pos); + tokenFlags |= 4 /* Unterminated */; + error(ts.Diagnostics.Unterminated_string_literal); + break; + } + pos++; + } + return result; + } + /** + * Sets the current 'tokenValue' and returns a NoSubstitutionTemplateLiteral or + * a literal component of a TemplateExpression. + */ + function scanTemplateAndSetTokenValue(isTaggedTemplate) { + var startedWithBacktick = text.charCodeAt(pos) === 96 /* backtick */; + pos++; + var start = pos; + var contents = ""; + var resultingToken; + while (true) { + if (pos >= end) { + contents += text.substring(start, pos); + tokenFlags |= 4 /* Unterminated */; + error(ts.Diagnostics.Unterminated_template_literal); + resultingToken = startedWithBacktick ? 14 /* NoSubstitutionTemplateLiteral */ : 17 /* TemplateTail */; + break; + } + var currChar = text.charCodeAt(pos); + // '`' + if (currChar === 96 /* backtick */) { + contents += text.substring(start, pos); + pos++; + resultingToken = startedWithBacktick ? 14 /* NoSubstitutionTemplateLiteral */ : 17 /* TemplateTail */; + break; + } + // '${' + if (currChar === 36 /* $ */ && pos + 1 < end && text.charCodeAt(pos + 1) === 123 /* openBrace */) { + contents += text.substring(start, pos); + pos += 2; + resultingToken = startedWithBacktick ? 15 /* TemplateHead */ : 16 /* TemplateMiddle */; + break; + } + // Escape character + if (currChar === 92 /* backslash */) { + contents += text.substring(start, pos); + contents += scanEscapeSequence(isTaggedTemplate); + start = pos; + continue; + } + // Speculated ECMAScript 6 Spec 11.8.6.1: + // and LineTerminatorSequences are normalized to for Template Values + if (currChar === 13 /* carriageReturn */) { + contents += text.substring(start, pos); + pos++; + if (pos < end && text.charCodeAt(pos) === 10 /* lineFeed */) { + pos++; + } + contents += "\n"; + start = pos; + continue; + } + pos++; + } + ts.Debug.assert(resultingToken !== undefined); + tokenValue = contents; + return resultingToken; + } + function scanEscapeSequence(isTaggedTemplate) { + var start = pos; + pos++; + if (pos >= end) { + error(ts.Diagnostics.Unexpected_end_of_text); + return ""; + } + var ch = text.charCodeAt(pos); + pos++; + switch (ch) { + case 48 /* _0 */: + // '\01' + if (isTaggedTemplate && pos < end && isDigit(text.charCodeAt(pos))) { + pos++; + tokenFlags |= 2048 /* ContainsInvalidEscape */; + return text.substring(start, pos); + } + return "\0"; + case 98 /* b */: + return "\b"; + case 116 /* t */: + return "\t"; + case 110 /* n */: + return "\n"; + case 118 /* v */: + return "\v"; + case 102 /* f */: + return "\f"; + case 114 /* r */: + return "\r"; + case 39 /* singleQuote */: + return "\'"; + case 34 /* doubleQuote */: + return "\""; + case 117 /* u */: + if (isTaggedTemplate) { + // '\u' or '\u0' or '\u00' or '\u000' + for (var escapePos = pos; escapePos < pos + 4; escapePos++) { + if (escapePos < end && !isHexDigit(text.charCodeAt(escapePos)) && text.charCodeAt(escapePos) !== 123 /* openBrace */) { + pos = escapePos; + tokenFlags |= 2048 /* ContainsInvalidEscape */; + return text.substring(start, pos); + } + } + } + // '\u{DDDDDDDD}' + if (pos < end && text.charCodeAt(pos) === 123 /* openBrace */) { + pos++; + // '\u{' + if (isTaggedTemplate && !isHexDigit(text.charCodeAt(pos))) { + tokenFlags |= 2048 /* ContainsInvalidEscape */; + return text.substring(start, pos); + } + if (isTaggedTemplate) { + var savePos = pos; + var escapedValueString = scanMinimumNumberOfHexDigits(1, /*canHaveSeparators*/ false); + var escapedValue = escapedValueString ? parseInt(escapedValueString, 16) : -1; + // '\u{Not Code Point' or '\u{CodePoint' + if (!isCodePoint(escapedValue) || text.charCodeAt(pos) !== 125 /* closeBrace */) { + tokenFlags |= 2048 /* ContainsInvalidEscape */; + return text.substring(start, pos); + } + else { + pos = savePos; + } + } + tokenFlags |= 8 /* ExtendedUnicodeEscape */; + return scanExtendedUnicodeEscape(); + } + tokenFlags |= 1024 /* UnicodeEscape */; + // '\uDDDD' + return scanHexadecimalEscape(/*numDigits*/ 4); + case 120 /* x */: + if (isTaggedTemplate) { + if (!isHexDigit(text.charCodeAt(pos))) { + tokenFlags |= 2048 /* ContainsInvalidEscape */; + return text.substring(start, pos); + } + else if (!isHexDigit(text.charCodeAt(pos + 1))) { + pos++; + tokenFlags |= 2048 /* ContainsInvalidEscape */; + return text.substring(start, pos); + } + } + // '\xDD' + return scanHexadecimalEscape(/*numDigits*/ 2); + // when encountering a LineContinuation (i.e. a backslash and a line terminator sequence), + // the line terminator is interpreted to be "the empty code unit sequence". + case 13 /* carriageReturn */: + if (pos < end && text.charCodeAt(pos) === 10 /* lineFeed */) { + pos++; + } + // falls through + case 10 /* lineFeed */: + case 8232 /* lineSeparator */: + case 8233 /* paragraphSeparator */: + return ""; + default: + return String.fromCharCode(ch); + } + } + function scanHexadecimalEscape(numDigits) { + var escapedValue = scanExactNumberOfHexDigits(numDigits, /*canHaveSeparators*/ false); + if (escapedValue >= 0) { + return String.fromCharCode(escapedValue); + } + else { + error(ts.Diagnostics.Hexadecimal_digit_expected); + return ""; + } + } + function scanExtendedUnicodeEscape() { + var escapedValueString = scanMinimumNumberOfHexDigits(1, /*canHaveSeparators*/ false); + var escapedValue = escapedValueString ? parseInt(escapedValueString, 16) : -1; + var isInvalidExtendedEscape = false; + // Validate the value of the digit + if (escapedValue < 0) { + error(ts.Diagnostics.Hexadecimal_digit_expected); + isInvalidExtendedEscape = true; + } + else if (escapedValue > 0x10FFFF) { + error(ts.Diagnostics.An_extended_Unicode_escape_value_must_be_between_0x0_and_0x10FFFF_inclusive); + isInvalidExtendedEscape = true; + } + if (pos >= end) { + error(ts.Diagnostics.Unexpected_end_of_text); + isInvalidExtendedEscape = true; + } + else if (text.charCodeAt(pos) === 125 /* closeBrace */) { + // Only swallow the following character up if it's a '}'. + pos++; + } + else { + error(ts.Diagnostics.Unterminated_Unicode_escape_sequence); + isInvalidExtendedEscape = true; + } + if (isInvalidExtendedEscape) { + return ""; + } + return utf16EncodeAsString(escapedValue); + } + // Current character is known to be a backslash. Check for Unicode escape of the form '\uXXXX' + // and return code point value if valid Unicode escape is found. Otherwise return -1. + function peekUnicodeEscape() { + if (pos + 5 < end && text.charCodeAt(pos + 1) === 117 /* u */) { + var start_1 = pos; + pos += 2; + var value = scanExactNumberOfHexDigits(4, /*canHaveSeparators*/ false); + pos = start_1; + return value; + } + return -1; + } + function peekExtendedUnicodeEscape() { + if (languageVersion >= 2 /* ES2015 */ && codePointAt(text, pos + 1) === 117 /* u */ && codePointAt(text, pos + 2) === 123 /* openBrace */) { + var start_2 = pos; + pos += 3; + var escapedValueString = scanMinimumNumberOfHexDigits(1, /*canHaveSeparators*/ false); + var escapedValue = escapedValueString ? parseInt(escapedValueString, 16) : -1; + pos = start_2; + return escapedValue; + } + return -1; + } + function scanIdentifierParts() { + var result = ""; + var start = pos; + while (pos < end) { + var ch = codePointAt(text, pos); + if (isIdentifierPart(ch, languageVersion)) { + pos += charSize(ch); + } + else if (ch === 92 /* backslash */) { + ch = peekExtendedUnicodeEscape(); + if (ch >= 0 && isIdentifierPart(ch, languageVersion)) { + pos += 3; + tokenFlags |= 8 /* ExtendedUnicodeEscape */; + result += scanExtendedUnicodeEscape(); + start = pos; + continue; + } + ch = peekUnicodeEscape(); + if (!(ch >= 0 && isIdentifierPart(ch, languageVersion))) { + break; + } + tokenFlags |= 1024 /* UnicodeEscape */; + result += text.substring(start, pos); + result += utf16EncodeAsString(ch); + // Valid Unicode escape is always six characters + pos += 6; + start = pos; + } + else { + break; + } + } + result += text.substring(start, pos); + return result; + } + function getIdentifierToken() { + // Reserved words are between 2 and 11 characters long and start with a lowercase letter + var len = tokenValue.length; + if (len >= 2 && len <= 11) { + var ch = tokenValue.charCodeAt(0); + if (ch >= 97 /* a */ && ch <= 122 /* z */) { + var keyword = textToKeyword.get(tokenValue); + if (keyword !== undefined) { + return token = keyword; + } + } + } + return token = 75 /* Identifier */; + } + function scanBinaryOrOctalDigits(base) { + var value = ""; + // For counting number of digits; Valid binaryIntegerLiteral must have at least one binary digit following B or b. + // Similarly valid octalIntegerLiteral must have at least one octal digit following o or O. + var separatorAllowed = false; + var isPreviousTokenSeparator = false; + while (true) { + var ch = text.charCodeAt(pos); + // Numeric separators are allowed anywhere within a numeric literal, except not at the beginning, or following another separator + if (ch === 95 /* _ */) { + tokenFlags |= 512 /* ContainsSeparator */; + if (separatorAllowed) { + separatorAllowed = false; + isPreviousTokenSeparator = true; + } + else if (isPreviousTokenSeparator) { + error(ts.Diagnostics.Multiple_consecutive_numeric_separators_are_not_permitted, pos, 1); + } + else { + error(ts.Diagnostics.Numeric_separators_are_not_allowed_here, pos, 1); + } + pos++; + continue; + } + separatorAllowed = true; + if (!isDigit(ch) || ch - 48 /* _0 */ >= base) { + break; + } + value += text[pos]; + pos++; + isPreviousTokenSeparator = false; + } + if (text.charCodeAt(pos - 1) === 95 /* _ */) { + // Literal ends with underscore - not allowed + error(ts.Diagnostics.Numeric_separators_are_not_allowed_here, pos - 1, 1); + } + return value; + } + function checkBigIntSuffix() { + if (text.charCodeAt(pos) === 110 /* n */) { + tokenValue += "n"; + // Use base 10 instead of base 2 or base 8 for shorter literals + if (tokenFlags & 384 /* BinaryOrOctalSpecifier */) { + tokenValue = ts.parsePseudoBigInt(tokenValue) + "n"; + } + pos++; + return 9 /* BigIntLiteral */; + } + else { // not a bigint, so can convert to number in simplified form + // Number() may not support 0b or 0o, so use parseInt() instead + var numericValue = tokenFlags & 128 /* BinarySpecifier */ + ? parseInt(tokenValue.slice(2), 2) // skip "0b" + : tokenFlags & 256 /* OctalSpecifier */ + ? parseInt(tokenValue.slice(2), 8) // skip "0o" + : +tokenValue; + tokenValue = "" + numericValue; + return 8 /* NumericLiteral */; + } + } + function scan() { + var _a; + startPos = pos; + tokenFlags = 0 /* None */; + var asteriskSeen = false; + while (true) { + tokenPos = pos; + if (pos >= end) { + return token = 1 /* EndOfFileToken */; + } + var ch = codePointAt(text, pos); + // Special handling for shebang + if (ch === 35 /* hash */ && pos === 0 && isShebangTrivia(text, pos)) { + pos = scanShebangTrivia(text, pos); + if (skipTrivia) { + continue; + } + else { + return token = 6 /* ShebangTrivia */; + } + } + switch (ch) { + case 10 /* lineFeed */: + case 13 /* carriageReturn */: + tokenFlags |= 1 /* PrecedingLineBreak */; + if (skipTrivia) { + pos++; + continue; + } + else { + if (ch === 13 /* carriageReturn */ && pos + 1 < end && text.charCodeAt(pos + 1) === 10 /* lineFeed */) { + // consume both CR and LF + pos += 2; + } + else { + pos++; + } + return token = 4 /* NewLineTrivia */; + } + case 9 /* tab */: + case 11 /* verticalTab */: + case 12 /* formFeed */: + case 32 /* space */: + case 160 /* nonBreakingSpace */: + case 5760 /* ogham */: + case 8192 /* enQuad */: + case 8193 /* emQuad */: + case 8194 /* enSpace */: + case 8195 /* emSpace */: + case 8196 /* threePerEmSpace */: + case 8197 /* fourPerEmSpace */: + case 8198 /* sixPerEmSpace */: + case 8199 /* figureSpace */: + case 8200 /* punctuationSpace */: + case 8201 /* thinSpace */: + case 8202 /* hairSpace */: + case 8203 /* zeroWidthSpace */: + case 8239 /* narrowNoBreakSpace */: + case 8287 /* mathematicalSpace */: + case 12288 /* ideographicSpace */: + case 65279 /* byteOrderMark */: + if (skipTrivia) { + pos++; + continue; + } + else { + while (pos < end && isWhiteSpaceSingleLine(text.charCodeAt(pos))) { + pos++; + } + return token = 5 /* WhitespaceTrivia */; + } + case 33 /* exclamation */: + if (text.charCodeAt(pos + 1) === 61 /* equals */) { + if (text.charCodeAt(pos + 2) === 61 /* equals */) { + return pos += 3, token = 37 /* ExclamationEqualsEqualsToken */; + } + return pos += 2, token = 35 /* ExclamationEqualsToken */; + } + pos++; + return token = 53 /* ExclamationToken */; + case 34 /* doubleQuote */: + case 39 /* singleQuote */: + tokenValue = scanString(); + return token = 10 /* StringLiteral */; + case 96 /* backtick */: + return token = scanTemplateAndSetTokenValue(/* isTaggedTemplate */ false); + case 37 /* percent */: + if (text.charCodeAt(pos + 1) === 61 /* equals */) { + return pos += 2, token = 68 /* PercentEqualsToken */; + } + pos++; + return token = 44 /* PercentToken */; + case 38 /* ampersand */: + if (text.charCodeAt(pos + 1) === 38 /* ampersand */) { + return pos += 2, token = 55 /* AmpersandAmpersandToken */; + } + if (text.charCodeAt(pos + 1) === 61 /* equals */) { + return pos += 2, token = 72 /* AmpersandEqualsToken */; + } + pos++; + return token = 50 /* AmpersandToken */; + case 40 /* openParen */: + pos++; + return token = 20 /* OpenParenToken */; + case 41 /* closeParen */: + pos++; + return token = 21 /* CloseParenToken */; + case 42 /* asterisk */: + if (text.charCodeAt(pos + 1) === 61 /* equals */) { + return pos += 2, token = 65 /* AsteriskEqualsToken */; + } + if (text.charCodeAt(pos + 1) === 42 /* asterisk */) { + if (text.charCodeAt(pos + 2) === 61 /* equals */) { + return pos += 3, token = 66 /* AsteriskAsteriskEqualsToken */; + } + return pos += 2, token = 42 /* AsteriskAsteriskToken */; + } + pos++; + if (inJSDocType && !asteriskSeen && (tokenFlags & 1 /* PrecedingLineBreak */)) { + // decoration at the start of a JSDoc comment line + asteriskSeen = true; + continue; + } + return token = 41 /* AsteriskToken */; + case 43 /* plus */: + if (text.charCodeAt(pos + 1) === 43 /* plus */) { + return pos += 2, token = 45 /* PlusPlusToken */; + } + if (text.charCodeAt(pos + 1) === 61 /* equals */) { + return pos += 2, token = 63 /* PlusEqualsToken */; + } + pos++; + return token = 39 /* PlusToken */; + case 44 /* comma */: + pos++; + return token = 27 /* CommaToken */; + case 45 /* minus */: + if (text.charCodeAt(pos + 1) === 45 /* minus */) { + return pos += 2, token = 46 /* MinusMinusToken */; + } + if (text.charCodeAt(pos + 1) === 61 /* equals */) { + return pos += 2, token = 64 /* MinusEqualsToken */; + } + pos++; + return token = 40 /* MinusToken */; + case 46 /* dot */: + if (isDigit(text.charCodeAt(pos + 1))) { + tokenValue = scanNumber().value; + return token = 8 /* NumericLiteral */; + } + if (text.charCodeAt(pos + 1) === 46 /* dot */ && text.charCodeAt(pos + 2) === 46 /* dot */) { + return pos += 3, token = 25 /* DotDotDotToken */; + } + pos++; + return token = 24 /* DotToken */; + case 47 /* slash */: + // Single-line comment + if (text.charCodeAt(pos + 1) === 47 /* slash */) { + pos += 2; + while (pos < end) { + if (isLineBreak(text.charCodeAt(pos))) { + break; + } + pos++; + } + commentDirectives = appendIfCommentDirective(commentDirectives, text.slice(tokenPos, pos), commentDirectiveRegExSingleLine, tokenPos); + if (skipTrivia) { + continue; + } + else { + return token = 2 /* SingleLineCommentTrivia */; + } + } + // Multi-line comment + if (text.charCodeAt(pos + 1) === 42 /* asterisk */) { + pos += 2; + if (text.charCodeAt(pos) === 42 /* asterisk */ && text.charCodeAt(pos + 1) !== 47 /* slash */) { + tokenFlags |= 2 /* PrecedingJSDocComment */; + } + var commentClosed = false; + var lastLineStart = tokenPos; + while (pos < end) { + var ch_1 = text.charCodeAt(pos); + if (ch_1 === 42 /* asterisk */ && text.charCodeAt(pos + 1) === 47 /* slash */) { + pos += 2; + commentClosed = true; + break; + } + pos++; + if (isLineBreak(ch_1)) { + lastLineStart = pos; + tokenFlags |= 1 /* PrecedingLineBreak */; + } + } + commentDirectives = appendIfCommentDirective(commentDirectives, text.slice(lastLineStart, pos), commentDirectiveRegExMultiLine, lastLineStart); + if (!commentClosed) { + error(ts.Diagnostics.Asterisk_Slash_expected); + } + if (skipTrivia) { + continue; + } + else { + if (!commentClosed) { + tokenFlags |= 4 /* Unterminated */; + } + return token = 3 /* MultiLineCommentTrivia */; + } + } + if (text.charCodeAt(pos + 1) === 61 /* equals */) { + return pos += 2, token = 67 /* SlashEqualsToken */; + } + pos++; + return token = 43 /* SlashToken */; + case 48 /* _0 */: + if (pos + 2 < end && (text.charCodeAt(pos + 1) === 88 /* X */ || text.charCodeAt(pos + 1) === 120 /* x */)) { + pos += 2; + tokenValue = scanMinimumNumberOfHexDigits(1, /*canHaveSeparators*/ true); + if (!tokenValue) { + error(ts.Diagnostics.Hexadecimal_digit_expected); + tokenValue = "0"; + } + tokenValue = "0x" + tokenValue; + tokenFlags |= 64 /* HexSpecifier */; + return token = checkBigIntSuffix(); + } + else if (pos + 2 < end && (text.charCodeAt(pos + 1) === 66 /* B */ || text.charCodeAt(pos + 1) === 98 /* b */)) { + pos += 2; + tokenValue = scanBinaryOrOctalDigits(/* base */ 2); + if (!tokenValue) { + error(ts.Diagnostics.Binary_digit_expected); + tokenValue = "0"; + } + tokenValue = "0b" + tokenValue; + tokenFlags |= 128 /* BinarySpecifier */; + return token = checkBigIntSuffix(); + } + else if (pos + 2 < end && (text.charCodeAt(pos + 1) === 79 /* O */ || text.charCodeAt(pos + 1) === 111 /* o */)) { + pos += 2; + tokenValue = scanBinaryOrOctalDigits(/* base */ 8); + if (!tokenValue) { + error(ts.Diagnostics.Octal_digit_expected); + tokenValue = "0"; + } + tokenValue = "0o" + tokenValue; + tokenFlags |= 256 /* OctalSpecifier */; + return token = checkBigIntSuffix(); + } + // Try to parse as an octal + if (pos + 1 < end && isOctalDigit(text.charCodeAt(pos + 1))) { + tokenValue = "" + scanOctalDigits(); + tokenFlags |= 32 /* Octal */; + return token = 8 /* NumericLiteral */; + } + // This fall-through is a deviation from the EcmaScript grammar. The grammar says that a leading zero + // can only be followed by an octal digit, a dot, or the end of the number literal. However, we are being + // permissive and allowing decimal digits of the form 08* and 09* (which many browsers also do). + // falls through + case 49 /* _1 */: + case 50 /* _2 */: + case 51 /* _3 */: + case 52 /* _4 */: + case 53 /* _5 */: + case 54 /* _6 */: + case 55 /* _7 */: + case 56 /* _8 */: + case 57 /* _9 */: + (_a = scanNumber(), token = _a.type, tokenValue = _a.value); + return token; + case 58 /* colon */: + pos++; + return token = 58 /* ColonToken */; + case 59 /* semicolon */: + pos++; + return token = 26 /* SemicolonToken */; + case 60 /* lessThan */: + if (isConflictMarkerTrivia(text, pos)) { + pos = scanConflictMarkerTrivia(text, pos, error); + if (skipTrivia) { + continue; + } + else { + return token = 7 /* ConflictMarkerTrivia */; + } + } + if (text.charCodeAt(pos + 1) === 60 /* lessThan */) { + if (text.charCodeAt(pos + 2) === 61 /* equals */) { + return pos += 3, token = 69 /* LessThanLessThanEqualsToken */; + } + return pos += 2, token = 47 /* LessThanLessThanToken */; + } + if (text.charCodeAt(pos + 1) === 61 /* equals */) { + return pos += 2, token = 32 /* LessThanEqualsToken */; + } + if (languageVariant === 1 /* JSX */ && + text.charCodeAt(pos + 1) === 47 /* slash */ && + text.charCodeAt(pos + 2) !== 42 /* asterisk */) { + return pos += 2, token = 30 /* LessThanSlashToken */; + } + pos++; + return token = 29 /* LessThanToken */; + case 61 /* equals */: + if (isConflictMarkerTrivia(text, pos)) { + pos = scanConflictMarkerTrivia(text, pos, error); + if (skipTrivia) { + continue; + } + else { + return token = 7 /* ConflictMarkerTrivia */; + } + } + if (text.charCodeAt(pos + 1) === 61 /* equals */) { + if (text.charCodeAt(pos + 2) === 61 /* equals */) { + return pos += 3, token = 36 /* EqualsEqualsEqualsToken */; + } + return pos += 2, token = 34 /* EqualsEqualsToken */; + } + if (text.charCodeAt(pos + 1) === 62 /* greaterThan */) { + return pos += 2, token = 38 /* EqualsGreaterThanToken */; + } + pos++; + return token = 62 /* EqualsToken */; + case 62 /* greaterThan */: + if (isConflictMarkerTrivia(text, pos)) { + pos = scanConflictMarkerTrivia(text, pos, error); + if (skipTrivia) { + continue; + } + else { + return token = 7 /* ConflictMarkerTrivia */; + } + } + pos++; + return token = 31 /* GreaterThanToken */; + case 63 /* question */: + pos++; + if (text.charCodeAt(pos) === 46 /* dot */ && !isDigit(text.charCodeAt(pos + 1))) { + pos++; + return token = 28 /* QuestionDotToken */; + } + if (text.charCodeAt(pos) === 63 /* question */) { + pos++; + return token = 60 /* QuestionQuestionToken */; + } + return token = 57 /* QuestionToken */; + case 91 /* openBracket */: + pos++; + return token = 22 /* OpenBracketToken */; + case 93 /* closeBracket */: + pos++; + return token = 23 /* CloseBracketToken */; + case 94 /* caret */: + if (text.charCodeAt(pos + 1) === 61 /* equals */) { + return pos += 2, token = 74 /* CaretEqualsToken */; + } + pos++; + return token = 52 /* CaretToken */; + case 123 /* openBrace */: + pos++; + return token = 18 /* OpenBraceToken */; + case 124 /* bar */: + if (isConflictMarkerTrivia(text, pos)) { + pos = scanConflictMarkerTrivia(text, pos, error); + if (skipTrivia) { + continue; + } + else { + return token = 7 /* ConflictMarkerTrivia */; + } + } + if (text.charCodeAt(pos + 1) === 124 /* bar */) { + return pos += 2, token = 56 /* BarBarToken */; + } + if (text.charCodeAt(pos + 1) === 61 /* equals */) { + return pos += 2, token = 73 /* BarEqualsToken */; + } + pos++; + return token = 51 /* BarToken */; + case 125 /* closeBrace */: + pos++; + return token = 19 /* CloseBraceToken */; + case 126 /* tilde */: + pos++; + return token = 54 /* TildeToken */; + case 64 /* at */: + pos++; + return token = 59 /* AtToken */; + case 92 /* backslash */: + var extendedCookedChar = peekExtendedUnicodeEscape(); + if (extendedCookedChar >= 0 && isIdentifierStart(extendedCookedChar, languageVersion)) { + pos += 3; + tokenFlags |= 8 /* ExtendedUnicodeEscape */; + tokenValue = scanExtendedUnicodeEscape() + scanIdentifierParts(); + return token = getIdentifierToken(); + } + var cookedChar = peekUnicodeEscape(); + if (cookedChar >= 0 && isIdentifierStart(cookedChar, languageVersion)) { + pos += 6; + tokenFlags |= 1024 /* UnicodeEscape */; + tokenValue = String.fromCharCode(cookedChar) + scanIdentifierParts(); + return token = getIdentifierToken(); + } + error(ts.Diagnostics.Invalid_character); + pos++; + return token = 0 /* Unknown */; + case 35 /* hash */: + if (pos !== 0 && text[pos + 1] === "!") { + error(ts.Diagnostics.can_only_be_used_at_the_start_of_a_file); + pos++; + return token = 0 /* Unknown */; + } + pos++; + if (isIdentifierStart(ch = text.charCodeAt(pos), languageVersion)) { + pos++; + while (pos < end && isIdentifierPart(ch = text.charCodeAt(pos), languageVersion)) + pos++; + tokenValue = text.substring(tokenPos, pos); + if (ch === 92 /* backslash */) { + tokenValue += scanIdentifierParts(); + } + } + else { + tokenValue = "#"; + error(ts.Diagnostics.Invalid_character); + } + return token = 76 /* PrivateIdentifier */; + default: + if (isIdentifierStart(ch, languageVersion)) { + pos += charSize(ch); + while (pos < end && isIdentifierPart(ch = codePointAt(text, pos), languageVersion)) + pos += charSize(ch); + tokenValue = text.substring(tokenPos, pos); + if (ch === 92 /* backslash */) { + tokenValue += scanIdentifierParts(); + } + return token = getIdentifierToken(); + } + else if (isWhiteSpaceSingleLine(ch)) { + pos += charSize(ch); + continue; + } + else if (isLineBreak(ch)) { + tokenFlags |= 1 /* PrecedingLineBreak */; + pos += charSize(ch); + continue; + } + error(ts.Diagnostics.Invalid_character); + pos += charSize(ch); + return token = 0 /* Unknown */; + } + } + } + function reScanGreaterToken() { + if (token === 31 /* GreaterThanToken */) { + if (text.charCodeAt(pos) === 62 /* greaterThan */) { + if (text.charCodeAt(pos + 1) === 62 /* greaterThan */) { + if (text.charCodeAt(pos + 2) === 61 /* equals */) { + return pos += 3, token = 71 /* GreaterThanGreaterThanGreaterThanEqualsToken */; + } + return pos += 2, token = 49 /* GreaterThanGreaterThanGreaterThanToken */; + } + if (text.charCodeAt(pos + 1) === 61 /* equals */) { + return pos += 2, token = 70 /* GreaterThanGreaterThanEqualsToken */; + } + pos++; + return token = 48 /* GreaterThanGreaterThanToken */; + } + if (text.charCodeAt(pos) === 61 /* equals */) { + pos++; + return token = 33 /* GreaterThanEqualsToken */; + } + } + return token; + } + function reScanSlashToken() { + if (token === 43 /* SlashToken */ || token === 67 /* SlashEqualsToken */) { + var p = tokenPos + 1; + var inEscape = false; + var inCharacterClass = false; + while (true) { + // If we reach the end of a file, or hit a newline, then this is an unterminated + // regex. Report error and return what we have so far. + if (p >= end) { + tokenFlags |= 4 /* Unterminated */; + error(ts.Diagnostics.Unterminated_regular_expression_literal); + break; + } + var ch = text.charCodeAt(p); + if (isLineBreak(ch)) { + tokenFlags |= 4 /* Unterminated */; + error(ts.Diagnostics.Unterminated_regular_expression_literal); + break; + } + if (inEscape) { + // Parsing an escape character; + // reset the flag and just advance to the next char. + inEscape = false; + } + else if (ch === 47 /* slash */ && !inCharacterClass) { + // A slash within a character class is permissible, + // but in general it signals the end of the regexp literal. + p++; + break; + } + else if (ch === 91 /* openBracket */) { + inCharacterClass = true; + } + else if (ch === 92 /* backslash */) { + inEscape = true; + } + else if (ch === 93 /* closeBracket */) { + inCharacterClass = false; + } + p++; + } + while (p < end && isIdentifierPart(text.charCodeAt(p), languageVersion)) { + p++; + } + pos = p; + tokenValue = text.substring(tokenPos, pos); + token = 13 /* RegularExpressionLiteral */; + } + return token; + } + function appendIfCommentDirective(commentDirectives, text, commentDirectiveRegEx, lineStart) { + var type = getDirectiveFromComment(text, commentDirectiveRegEx); + if (type === undefined) { + return commentDirectives; + } + return ts.append(commentDirectives, { + range: { pos: lineStart, end: pos }, + type: type, + }); + } + function getDirectiveFromComment(text, commentDirectiveRegEx) { + var match = commentDirectiveRegEx.exec(text); + if (!match) { + return undefined; + } + switch (match[1]) { + case "ts-expect-error": + return 0 /* ExpectError */; + case "ts-ignore": + return 1 /* Ignore */; + } + return undefined; + } + /** + * Unconditionally back up and scan a template expression portion. + */ + function reScanTemplateToken(isTaggedTemplate) { + ts.Debug.assert(token === 19 /* CloseBraceToken */, "'reScanTemplateToken' should only be called on a '}'"); + pos = tokenPos; + return token = scanTemplateAndSetTokenValue(isTaggedTemplate); + } + function reScanTemplateHeadOrNoSubstitutionTemplate() { + pos = tokenPos; + return token = scanTemplateAndSetTokenValue(/* isTaggedTemplate */ true); + } + function reScanJsxToken() { + pos = tokenPos = startPos; + return token = scanJsxToken(); + } + function reScanLessThanToken() { + if (token === 47 /* LessThanLessThanToken */) { + pos = tokenPos + 1; + return token = 29 /* LessThanToken */; + } + return token; + } + function reScanQuestionToken() { + ts.Debug.assert(token === 60 /* QuestionQuestionToken */, "'reScanQuestionToken' should only be called on a '??'"); + pos = tokenPos + 1; + return token = 57 /* QuestionToken */; + } + function scanJsxToken() { + startPos = tokenPos = pos; + if (pos >= end) { + return token = 1 /* EndOfFileToken */; + } + var char = text.charCodeAt(pos); + if (char === 60 /* lessThan */) { + if (text.charCodeAt(pos + 1) === 47 /* slash */) { + pos += 2; + return token = 30 /* LessThanSlashToken */; + } + pos++; + return token = 29 /* LessThanToken */; + } + if (char === 123 /* openBrace */) { + pos++; + return token = 18 /* OpenBraceToken */; + } + // First non-whitespace character on this line. + var firstNonWhitespace = 0; + var lastNonWhitespace = -1; + // These initial values are special because the first line is: + // firstNonWhitespace = 0 to indicate that we want leading whitespace, + while (pos < end) { + // We want to keep track of the last non-whitespace (but including + // newlines character for hitting the end of the JSX Text region) + if (!isWhiteSpaceSingleLine(char)) { + lastNonWhitespace = pos; + } + char = text.charCodeAt(pos); + if (char === 123 /* openBrace */) { + break; + } + if (char === 60 /* lessThan */) { + if (isConflictMarkerTrivia(text, pos)) { + pos = scanConflictMarkerTrivia(text, pos, error); + return token = 7 /* ConflictMarkerTrivia */; + } + break; + } + if (char === 62 /* greaterThan */) { + error(ts.Diagnostics.Unexpected_token_Did_you_mean_or_gt, pos, 1); + } + if (char === 125 /* closeBrace */) { + error(ts.Diagnostics.Unexpected_token_Did_you_mean_or_rbrace, pos, 1); + } + if (lastNonWhitespace > 0) + lastNonWhitespace++; + // FirstNonWhitespace is 0, then we only see whitespaces so far. If we see a linebreak, we want to ignore that whitespaces. + // i.e (- : whitespace) + //
---- + //
becomes
+ // + //
----
becomes
----
+ if (isLineBreak(char) && firstNonWhitespace === 0) { + firstNonWhitespace = -1; + } + else if (!isWhiteSpaceLike(char)) { + firstNonWhitespace = pos; + } + pos++; + } + var endPosition = lastNonWhitespace === -1 ? pos : lastNonWhitespace; + tokenValue = text.substring(startPos, endPosition); + return firstNonWhitespace === -1 ? 12 /* JsxTextAllWhiteSpaces */ : 11 /* JsxText */; + } + // Scans a JSX identifier; these differ from normal identifiers in that + // they allow dashes + function scanJsxIdentifier() { + if (tokenIsIdentifierOrKeyword(token)) { + // An identifier or keyword has already been parsed - check for a `-` and then append it and everything after it to the token + // Do note that this means that `scanJsxIdentifier` effectively _mutates_ the visible token without advancing to a new token + // Any caller should be expecting this behavior and should only read the pos or token value after calling it. + while (pos < end) { + var ch = text.charCodeAt(pos); + if (ch === 45 /* minus */) { + tokenValue += "-"; + pos++; + continue; + } + var oldPos = pos; + tokenValue += scanIdentifierParts(); // reuse `scanIdentifierParts` so unicode escapes are handled + if (pos === oldPos) { + break; + } + } + } + return token; + } + function scanJsxAttributeValue() { + startPos = pos; + switch (text.charCodeAt(pos)) { + case 34 /* doubleQuote */: + case 39 /* singleQuote */: + tokenValue = scanString(/*jsxAttributeString*/ true); + return token = 10 /* StringLiteral */; + default: + // If this scans anything other than `{`, it's a parse error. + return scan(); + } + } + function reScanJsxAttributeValue() { + pos = tokenPos = startPos; + return scanJsxAttributeValue(); + } + function scanJsDocToken() { + startPos = tokenPos = pos; + tokenFlags = 0 /* None */; + if (pos >= end) { + return token = 1 /* EndOfFileToken */; + } + var ch = codePointAt(text, pos); + pos += charSize(ch); + switch (ch) { + case 9 /* tab */: + case 11 /* verticalTab */: + case 12 /* formFeed */: + case 32 /* space */: + while (pos < end && isWhiteSpaceSingleLine(text.charCodeAt(pos))) { + pos++; + } + return token = 5 /* WhitespaceTrivia */; + case 64 /* at */: + return token = 59 /* AtToken */; + case 10 /* lineFeed */: + case 13 /* carriageReturn */: + tokenFlags |= 1 /* PrecedingLineBreak */; + return token = 4 /* NewLineTrivia */; + case 42 /* asterisk */: + return token = 41 /* AsteriskToken */; + case 123 /* openBrace */: + return token = 18 /* OpenBraceToken */; + case 125 /* closeBrace */: + return token = 19 /* CloseBraceToken */; + case 91 /* openBracket */: + return token = 22 /* OpenBracketToken */; + case 93 /* closeBracket */: + return token = 23 /* CloseBracketToken */; + case 60 /* lessThan */: + return token = 29 /* LessThanToken */; + case 62 /* greaterThan */: + return token = 31 /* GreaterThanToken */; + case 61 /* equals */: + return token = 62 /* EqualsToken */; + case 44 /* comma */: + return token = 27 /* CommaToken */; + case 46 /* dot */: + return token = 24 /* DotToken */; + case 96 /* backtick */: + return token = 61 /* BacktickToken */; + case 92 /* backslash */: + pos--; + var extendedCookedChar = peekExtendedUnicodeEscape(); + if (extendedCookedChar >= 0 && isIdentifierStart(extendedCookedChar, languageVersion)) { + pos += 3; + tokenFlags |= 8 /* ExtendedUnicodeEscape */; + tokenValue = scanExtendedUnicodeEscape() + scanIdentifierParts(); + return token = getIdentifierToken(); + } + var cookedChar = peekUnicodeEscape(); + if (cookedChar >= 0 && isIdentifierStart(cookedChar, languageVersion)) { + pos += 6; + tokenFlags |= 1024 /* UnicodeEscape */; + tokenValue = String.fromCharCode(cookedChar) + scanIdentifierParts(); + return token = getIdentifierToken(); + } + pos++; + return token = 0 /* Unknown */; + } + if (isIdentifierStart(ch, languageVersion)) { + var char = ch; + while (pos < end && isIdentifierPart(char = codePointAt(text, pos), languageVersion) || text.charCodeAt(pos) === 45 /* minus */) + pos += charSize(char); + tokenValue = text.substring(tokenPos, pos); + if (char === 92 /* backslash */) { + tokenValue += scanIdentifierParts(); + } + return token = getIdentifierToken(); + } + else { + return token = 0 /* Unknown */; + } + } + function speculationHelper(callback, isLookahead) { + var savePos = pos; + var saveStartPos = startPos; + var saveTokenPos = tokenPos; + var saveToken = token; + var saveTokenValue = tokenValue; + var saveTokenFlags = tokenFlags; + var result = callback(); + // If our callback returned something 'falsy' or we're just looking ahead, + // then unconditionally restore us to where we were. + if (!result || isLookahead) { + pos = savePos; + startPos = saveStartPos; + tokenPos = saveTokenPos; + token = saveToken; + tokenValue = saveTokenValue; + tokenFlags = saveTokenFlags; + } + return result; + } + function scanRange(start, length, callback) { + var saveEnd = end; + var savePos = pos; + var saveStartPos = startPos; + var saveTokenPos = tokenPos; + var saveToken = token; + var saveTokenValue = tokenValue; + var saveTokenFlags = tokenFlags; + var saveErrorExpectations = commentDirectives; + setText(text, start, length); + var result = callback(); + end = saveEnd; + pos = savePos; + startPos = saveStartPos; + tokenPos = saveTokenPos; + token = saveToken; + tokenValue = saveTokenValue; + tokenFlags = saveTokenFlags; + commentDirectives = saveErrorExpectations; + return result; + } + function lookAhead(callback) { + return speculationHelper(callback, /*isLookahead*/ true); + } + function tryScan(callback) { + return speculationHelper(callback, /*isLookahead*/ false); + } + function getText() { + return text; + } + function clearCommentDirectives() { + commentDirectives = undefined; + } + function setText(newText, start, length) { + text = newText || ""; + end = length === undefined ? text.length : start + length; + setTextPos(start || 0); + } + function setOnError(errorCallback) { + onError = errorCallback; + } + function setScriptTarget(scriptTarget) { + languageVersion = scriptTarget; + } + function setLanguageVariant(variant) { + languageVariant = variant; + } + function setTextPos(textPos) { + ts.Debug.assert(textPos >= 0); + pos = textPos; + startPos = textPos; + tokenPos = textPos; + token = 0 /* Unknown */; + tokenValue = undefined; + tokenFlags = 0 /* None */; + } + function setInJSDocType(inType) { + inJSDocType += inType ? 1 : -1; + } + } + ts.createScanner = createScanner; + /* @internal */ + var codePointAt = String.prototype.codePointAt ? function (s, i) { return s.codePointAt(i); } : function codePointAt(str, i) { + // from https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/codePointAt + var size = str.length; + // Account for out-of-bounds indices: + if (i < 0 || i >= size) { + return undefined; // String.codePointAt returns `undefined` for OOB indexes + } + // Get the first code unit + var first = str.charCodeAt(i); + // check if it’s the start of a surrogate pair + if (first >= 0xD800 && first <= 0xDBFF && size > i + 1) { // high surrogate and there is a next code unit + var second = str.charCodeAt(i + 1); + if (second >= 0xDC00 && second <= 0xDFFF) { // low surrogate + // https://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae + return (first - 0xD800) * 0x400 + second - 0xDC00 + 0x10000; + } + } + return first; + }; + /* @internal */ + function charSize(ch) { + if (ch >= 0x10000) { + return 2; + } + return 1; + } + // Derived from the 10.1.1 UTF16Encoding of the ES6 Spec. + function utf16EncodeAsStringFallback(codePoint) { + ts.Debug.assert(0x0 <= codePoint && codePoint <= 0x10FFFF); + if (codePoint <= 65535) { + return String.fromCharCode(codePoint); + } + var codeUnit1 = Math.floor((codePoint - 65536) / 1024) + 0xD800; + var codeUnit2 = ((codePoint - 65536) % 1024) + 0xDC00; + return String.fromCharCode(codeUnit1, codeUnit2); + } + var utf16EncodeAsStringWorker = String.fromCodePoint ? function (codePoint) { return String.fromCodePoint(codePoint); } : utf16EncodeAsStringFallback; + /* @internal */ + function utf16EncodeAsString(codePoint) { + return utf16EncodeAsStringWorker(codePoint); + } + ts.utf16EncodeAsString = utf16EncodeAsString; +})(ts || (ts = {})); +var ts; +(function (ts) { + function isExternalModuleNameRelative(moduleName) { + // TypeScript 1.0 spec (April 2014): 11.2.1 + // An external module name is "relative" if the first term is "." or "..". + // Update: We also consider a path like `C:\foo.ts` "relative" because we do not search for it in `node_modules` or treat it as an ambient module. + return ts.pathIsRelative(moduleName) || ts.isRootedDiskPath(moduleName); + } + ts.isExternalModuleNameRelative = isExternalModuleNameRelative; + function sortAndDeduplicateDiagnostics(diagnostics) { + return ts.sortAndDeduplicate(diagnostics, ts.compareDiagnostics); + } + ts.sortAndDeduplicateDiagnostics = sortAndDeduplicateDiagnostics; + function getDefaultLibFileName(options) { + switch (options.target) { + case 99 /* ESNext */: + return "lib.esnext.full.d.ts"; + case 7 /* ES2020 */: + return "lib.es2020.full.d.ts"; + case 6 /* ES2019 */: + return "lib.es2019.full.d.ts"; + case 5 /* ES2018 */: + return "lib.es2018.full.d.ts"; + case 4 /* ES2017 */: + return "lib.es2017.full.d.ts"; + case 3 /* ES2016 */: + return "lib.es2016.full.d.ts"; + case 2 /* ES2015 */: + return "lib.es6.d.ts"; // We don't use lib.es2015.full.d.ts due to breaking change. + default: + return "lib.d.ts"; + } + } + ts.getDefaultLibFileName = getDefaultLibFileName; + function textSpanEnd(span) { + return span.start + span.length; + } + ts.textSpanEnd = textSpanEnd; + function textSpanIsEmpty(span) { + return span.length === 0; + } + ts.textSpanIsEmpty = textSpanIsEmpty; + function textSpanContainsPosition(span, position) { + return position >= span.start && position < textSpanEnd(span); + } + ts.textSpanContainsPosition = textSpanContainsPosition; + /* @internal */ + function textRangeContainsPositionInclusive(span, position) { + return position >= span.pos && position <= span.end; + } + ts.textRangeContainsPositionInclusive = textRangeContainsPositionInclusive; + // Returns true if 'span' contains 'other'. + function textSpanContainsTextSpan(span, other) { + return other.start >= span.start && textSpanEnd(other) <= textSpanEnd(span); + } + ts.textSpanContainsTextSpan = textSpanContainsTextSpan; + function textSpanOverlapsWith(span, other) { + return textSpanOverlap(span, other) !== undefined; + } + ts.textSpanOverlapsWith = textSpanOverlapsWith; + function textSpanOverlap(span1, span2) { + var overlap = textSpanIntersection(span1, span2); + return overlap && overlap.length === 0 ? undefined : overlap; + } + ts.textSpanOverlap = textSpanOverlap; + function textSpanIntersectsWithTextSpan(span, other) { + return decodedTextSpanIntersectsWith(span.start, span.length, other.start, other.length); + } + ts.textSpanIntersectsWithTextSpan = textSpanIntersectsWithTextSpan; + function textSpanIntersectsWith(span, start, length) { + return decodedTextSpanIntersectsWith(span.start, span.length, start, length); + } + ts.textSpanIntersectsWith = textSpanIntersectsWith; + function decodedTextSpanIntersectsWith(start1, length1, start2, length2) { + var end1 = start1 + length1; + var end2 = start2 + length2; + return start2 <= end1 && end2 >= start1; + } + ts.decodedTextSpanIntersectsWith = decodedTextSpanIntersectsWith; + function textSpanIntersectsWithPosition(span, position) { + return position <= textSpanEnd(span) && position >= span.start; + } + ts.textSpanIntersectsWithPosition = textSpanIntersectsWithPosition; + function textSpanIntersection(span1, span2) { + var start = Math.max(span1.start, span2.start); + var end = Math.min(textSpanEnd(span1), textSpanEnd(span2)); + return start <= end ? createTextSpanFromBounds(start, end) : undefined; + } + ts.textSpanIntersection = textSpanIntersection; + function createTextSpan(start, length) { + if (start < 0) { + throw new Error("start < 0"); + } + if (length < 0) { + throw new Error("length < 0"); + } + return { start: start, length: length }; + } + ts.createTextSpan = createTextSpan; + function createTextSpanFromBounds(start, end) { + return createTextSpan(start, end - start); + } + ts.createTextSpanFromBounds = createTextSpanFromBounds; + function textChangeRangeNewSpan(range) { + return createTextSpan(range.span.start, range.newLength); + } + ts.textChangeRangeNewSpan = textChangeRangeNewSpan; + function textChangeRangeIsUnchanged(range) { + return textSpanIsEmpty(range.span) && range.newLength === 0; + } + ts.textChangeRangeIsUnchanged = textChangeRangeIsUnchanged; + function createTextChangeRange(span, newLength) { + if (newLength < 0) { + throw new Error("newLength < 0"); + } + return { span: span, newLength: newLength }; + } + ts.createTextChangeRange = createTextChangeRange; + ts.unchangedTextChangeRange = createTextChangeRange(createTextSpan(0, 0), 0); // eslint-disable-line prefer-const + /** + * Called to merge all the changes that occurred across several versions of a script snapshot + * into a single change. i.e. if a user keeps making successive edits to a script we will + * have a text change from V1 to V2, V2 to V3, ..., Vn. + * + * This function will then merge those changes into a single change range valid between V1 and + * Vn. + */ + function collapseTextChangeRangesAcrossMultipleVersions(changes) { + if (changes.length === 0) { + return ts.unchangedTextChangeRange; + } + if (changes.length === 1) { + return changes[0]; + } + // We change from talking about { { oldStart, oldLength }, newLength } to { oldStart, oldEnd, newEnd } + // as it makes things much easier to reason about. + var change0 = changes[0]; + var oldStartN = change0.span.start; + var oldEndN = textSpanEnd(change0.span); + var newEndN = oldStartN + change0.newLength; + for (var i = 1; i < changes.length; i++) { + var nextChange = changes[i]; + // Consider the following case: + // i.e. two edits. The first represents the text change range { { 10, 50 }, 30 }. i.e. The span starting + // at 10, with length 50 is reduced to length 30. The second represents the text change range { { 30, 30 }, 40 }. + // i.e. the span starting at 30 with length 30 is increased to length 40. + // + // 0 10 20 30 40 50 60 70 80 90 100 + // ------------------------------------------------------------------------------------------------------- + // | / + // | /---- + // T1 | /---- + // | /---- + // | /---- + // ------------------------------------------------------------------------------------------------------- + // | \ + // | \ + // T2 | \ + // | \ + // | \ + // ------------------------------------------------------------------------------------------------------- + // + // Merging these turns out to not be too difficult. First, determining the new start of the change is trivial + // it's just the min of the old and new starts. i.e.: + // + // 0 10 20 30 40 50 60 70 80 90 100 + // ------------------------------------------------------------*------------------------------------------ + // | / + // | /---- + // T1 | /---- + // | /---- + // | /---- + // ----------------------------------------$-------------------$------------------------------------------ + // . | \ + // . | \ + // T2 . | \ + // . | \ + // . | \ + // ----------------------------------------------------------------------*-------------------------------- + // + // (Note the dots represent the newly inferred start. + // Determining the new and old end is also pretty simple. Basically it boils down to paying attention to the + // absolute positions at the asterisks, and the relative change between the dollar signs. Basically, we see + // which if the two $'s precedes the other, and we move that one forward until they line up. in this case that + // means: + // + // 0 10 20 30 40 50 60 70 80 90 100 + // --------------------------------------------------------------------------------*---------------------- + // | / + // | /---- + // T1 | /---- + // | /---- + // | /---- + // ------------------------------------------------------------$------------------------------------------ + // . | \ + // . | \ + // T2 . | \ + // . | \ + // . | \ + // ----------------------------------------------------------------------*-------------------------------- + // + // In other words (in this case), we're recognizing that the second edit happened after where the first edit + // ended with a delta of 20 characters (60 - 40). Thus, if we go back in time to where the first edit started + // that's the same as if we started at char 80 instead of 60. + // + // As it so happens, the same logic applies if the second edit precedes the first edit. In that case rather + // than pushing the first edit forward to match the second, we'll push the second edit forward to match the + // first. + // + // In this case that means we have { oldStart: 10, oldEnd: 80, newEnd: 70 } or, in TextChangeRange + // semantics: { { start: 10, length: 70 }, newLength: 60 } + // + // The math then works out as follows. + // If we have { oldStart1, oldEnd1, newEnd1 } and { oldStart2, oldEnd2, newEnd2 } then we can compute the + // final result like so: + // + // { + // oldStart3: Min(oldStart1, oldStart2), + // oldEnd3: Max(oldEnd1, oldEnd1 + (oldEnd2 - newEnd1)), + // newEnd3: Max(newEnd2, newEnd2 + (newEnd1 - oldEnd2)) + // } + var oldStart1 = oldStartN; + var oldEnd1 = oldEndN; + var newEnd1 = newEndN; + var oldStart2 = nextChange.span.start; + var oldEnd2 = textSpanEnd(nextChange.span); + var newEnd2 = oldStart2 + nextChange.newLength; + oldStartN = Math.min(oldStart1, oldStart2); + oldEndN = Math.max(oldEnd1, oldEnd1 + (oldEnd2 - newEnd1)); + newEndN = Math.max(newEnd2, newEnd2 + (newEnd1 - oldEnd2)); + } + return createTextChangeRange(createTextSpanFromBounds(oldStartN, oldEndN), /*newLength*/ newEndN - oldStartN); + } + ts.collapseTextChangeRangesAcrossMultipleVersions = collapseTextChangeRangesAcrossMultipleVersions; + function getTypeParameterOwner(d) { + if (d && d.kind === 155 /* TypeParameter */) { + for (var current = d; current; current = current.parent) { + if (isFunctionLike(current) || isClassLike(current) || current.kind === 246 /* InterfaceDeclaration */) { + return current; + } + } + } + } + ts.getTypeParameterOwner = getTypeParameterOwner; + function isParameterPropertyDeclaration(node, parent) { + return ts.hasModifier(node, 92 /* ParameterPropertyModifier */) && parent.kind === 162 /* Constructor */; + } + ts.isParameterPropertyDeclaration = isParameterPropertyDeclaration; + function isEmptyBindingPattern(node) { + if (isBindingPattern(node)) { + return ts.every(node.elements, isEmptyBindingElement); + } + return false; + } + ts.isEmptyBindingPattern = isEmptyBindingPattern; + function isEmptyBindingElement(node) { + if (isOmittedExpression(node)) { + return true; + } + return isEmptyBindingPattern(node.name); + } + ts.isEmptyBindingElement = isEmptyBindingElement; + function walkUpBindingElementsAndPatterns(binding) { + var node = binding.parent; + while (isBindingElement(node.parent)) { + node = node.parent.parent; + } + return node.parent; + } + ts.walkUpBindingElementsAndPatterns = walkUpBindingElementsAndPatterns; + function getCombinedFlags(node, getFlags) { + if (isBindingElement(node)) { + node = walkUpBindingElementsAndPatterns(node); + } + var flags = getFlags(node); + if (node.kind === 242 /* VariableDeclaration */) { + node = node.parent; + } + if (node && node.kind === 243 /* VariableDeclarationList */) { + flags |= getFlags(node); + node = node.parent; + } + if (node && node.kind === 225 /* VariableStatement */) { + flags |= getFlags(node); + } + return flags; + } + function getCombinedModifierFlags(node) { + return getCombinedFlags(node, ts.getModifierFlags); + } + ts.getCombinedModifierFlags = getCombinedModifierFlags; + // Returns the node flags for this node and all relevant parent nodes. This is done so that + // nodes like variable declarations and binding elements can returned a view of their flags + // that includes the modifiers from their container. i.e. flags like export/declare aren't + // stored on the variable declaration directly, but on the containing variable statement + // (if it has one). Similarly, flags for let/const are store on the variable declaration + // list. By calling this function, all those flags are combined so that the client can treat + // the node as if it actually had those flags. + function getCombinedNodeFlags(node) { + return getCombinedFlags(node, function (n) { return n.flags; }); + } + ts.getCombinedNodeFlags = getCombinedNodeFlags; + /** + * Checks to see if the locale is in the appropriate format, + * and if it is, attempts to set the appropriate language. + */ + function validateLocaleAndSetLanguage(locale, sys, errors) { + var matchResult = /^([a-z]+)([_\-]([a-z]+))?$/.exec(locale.toLowerCase()); + if (!matchResult) { + if (errors) { + errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Locale_must_be_of_the_form_language_or_language_territory_For_example_0_or_1, "en", "ja-jp")); + } + return; + } + var language = matchResult[1]; + var territory = matchResult[3]; + // First try the entire locale, then fall back to just language if that's all we have. + // Either ways do not fail, and fallback to the English diagnostic strings. + if (!trySetLanguageAndTerritory(language, territory, errors)) { + trySetLanguageAndTerritory(language, /*territory*/ undefined, errors); + } + // Set the UI locale for string collation + ts.setUILocale(locale); + function trySetLanguageAndTerritory(language, territory, errors) { + var compilerFilePath = ts.normalizePath(sys.getExecutingFilePath()); + var containingDirectoryPath = ts.getDirectoryPath(compilerFilePath); + var filePath = ts.combinePaths(containingDirectoryPath, language); + if (territory) { + filePath = filePath + "-" + territory; + } + filePath = sys.resolvePath(ts.combinePaths(filePath, "diagnosticMessages.generated.json")); + if (!sys.fileExists(filePath)) { + return false; + } + // TODO: Add codePage support for readFile? + var fileContents = ""; + try { + fileContents = sys.readFile(filePath); + } + catch (e) { + if (errors) { + errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Unable_to_open_file_0, filePath)); + } + return false; + } + try { + // this is a global mutation (or live binding update)! + ts.setLocalizedDiagnosticMessages(JSON.parse(fileContents)); + } + catch (_a) { + if (errors) { + errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Corrupted_locale_file_0, filePath)); + } + return false; + } + return true; + } + } + ts.validateLocaleAndSetLanguage = validateLocaleAndSetLanguage; + function getOriginalNode(node, nodeTest) { + if (node) { + while (node.original !== undefined) { + node = node.original; + } + } + return !nodeTest || nodeTest(node) ? node : undefined; + } + ts.getOriginalNode = getOriginalNode; + /** + * Gets a value indicating whether a node originated in the parse tree. + * + * @param node The node to test. + */ + function isParseTreeNode(node) { + return (node.flags & 8 /* Synthesized */) === 0; + } + ts.isParseTreeNode = isParseTreeNode; + function getParseTreeNode(node, nodeTest) { + if (node === undefined || isParseTreeNode(node)) { + return node; + } + node = getOriginalNode(node); + if (isParseTreeNode(node) && (!nodeTest || nodeTest(node))) { + return node; + } + return undefined; + } + ts.getParseTreeNode = getParseTreeNode; + /** Add an extra underscore to identifiers that start with two underscores to avoid issues with magic names like '__proto__' */ + function escapeLeadingUnderscores(identifier) { + return (identifier.length >= 2 && identifier.charCodeAt(0) === 95 /* _ */ && identifier.charCodeAt(1) === 95 /* _ */ ? "_" + identifier : identifier); + } + ts.escapeLeadingUnderscores = escapeLeadingUnderscores; + /** + * Remove extra underscore from escaped identifier text content. + * + * @param identifier The escaped identifier text. + * @returns The unescaped identifier text. + */ + function unescapeLeadingUnderscores(identifier) { + var id = identifier; + return id.length >= 3 && id.charCodeAt(0) === 95 /* _ */ && id.charCodeAt(1) === 95 /* _ */ && id.charCodeAt(2) === 95 /* _ */ ? id.substr(1) : id; + } + ts.unescapeLeadingUnderscores = unescapeLeadingUnderscores; + function idText(identifierOrPrivateName) { + return unescapeLeadingUnderscores(identifierOrPrivateName.escapedText); + } + ts.idText = idText; + function symbolName(symbol) { + if (symbol.valueDeclaration && isPrivateIdentifierPropertyDeclaration(symbol.valueDeclaration)) { + return idText(symbol.valueDeclaration.name); + } + return unescapeLeadingUnderscores(symbol.escapedName); + } + ts.symbolName = symbolName; + /** + * A JSDocTypedef tag has an _optional_ name field - if a name is not directly present, we should + * attempt to draw the name from the node the declaration is on (as that declaration is what its' symbol + * will be merged with) + */ + function nameForNamelessJSDocTypedef(declaration) { + var hostNode = declaration.parent.parent; + if (!hostNode) { + return undefined; + } + // Covers classes, functions - any named declaration host node + if (isDeclaration(hostNode)) { + return getDeclarationIdentifier(hostNode); + } + // Covers remaining cases (returning undefined if none match). + switch (hostNode.kind) { + case 225 /* VariableStatement */: + if (hostNode.declarationList && hostNode.declarationList.declarations[0]) { + return getDeclarationIdentifier(hostNode.declarationList.declarations[0]); + } + break; + case 226 /* ExpressionStatement */: + var expr = hostNode.expression; + if (expr.kind === 209 /* BinaryExpression */ && expr.operatorToken.kind === 62 /* EqualsToken */) { + expr = expr.left; + } + switch (expr.kind) { + case 194 /* PropertyAccessExpression */: + return expr.name; + case 195 /* ElementAccessExpression */: + var arg = expr.argumentExpression; + if (isIdentifier(arg)) { + return arg; + } + } + break; + case 200 /* ParenthesizedExpression */: { + return getDeclarationIdentifier(hostNode.expression); + } + case 238 /* LabeledStatement */: { + if (isDeclaration(hostNode.statement) || isExpression(hostNode.statement)) { + return getDeclarationIdentifier(hostNode.statement); + } + break; + } + } + } + function getDeclarationIdentifier(node) { + var name = getNameOfDeclaration(node); + return name && isIdentifier(name) ? name : undefined; + } + /** @internal */ + function nodeHasName(statement, name) { + if (isNamedDeclaration(statement) && isIdentifier(statement.name) && idText(statement.name) === idText(name)) { + return true; + } + if (isVariableStatement(statement) && ts.some(statement.declarationList.declarations, function (d) { return nodeHasName(d, name); })) { + return true; + } + return false; + } + ts.nodeHasName = nodeHasName; + function getNameOfJSDocTypedef(declaration) { + return declaration.name || nameForNamelessJSDocTypedef(declaration); + } + ts.getNameOfJSDocTypedef = getNameOfJSDocTypedef; + /** @internal */ + function isNamedDeclaration(node) { + return !!node.name; // A 'name' property should always be a DeclarationName. + } + ts.isNamedDeclaration = isNamedDeclaration; + /** @internal */ + function getNonAssignedNameOfDeclaration(declaration) { + switch (declaration.kind) { + case 75 /* Identifier */: + return declaration; + case 323 /* JSDocPropertyTag */: + case 317 /* JSDocParameterTag */: { + var name = declaration.name; + if (name.kind === 153 /* QualifiedName */) { + return name.right; + } + break; + } + case 196 /* CallExpression */: + case 209 /* BinaryExpression */: { + var expr_1 = declaration; + switch (ts.getAssignmentDeclarationKind(expr_1)) { + case 1 /* ExportsProperty */: + case 4 /* ThisProperty */: + case 5 /* Property */: + case 3 /* PrototypeProperty */: + return ts.getElementOrPropertyAccessArgumentExpressionOrName(expr_1.left); + case 7 /* ObjectDefinePropertyValue */: + case 8 /* ObjectDefinePropertyExports */: + case 9 /* ObjectDefinePrototypeProperty */: + return expr_1.arguments[1]; + default: + return undefined; + } + } + case 322 /* JSDocTypedefTag */: + return getNameOfJSDocTypedef(declaration); + case 316 /* JSDocEnumTag */: + return nameForNamelessJSDocTypedef(declaration); + case 259 /* ExportAssignment */: { + var expression = declaration.expression; + return isIdentifier(expression) ? expression : undefined; + } + case 195 /* ElementAccessExpression */: + var expr = declaration; + if (ts.isBindableStaticElementAccessExpression(expr)) { + return expr.argumentExpression; + } + } + return declaration.name; + } + ts.getNonAssignedNameOfDeclaration = getNonAssignedNameOfDeclaration; + function getNameOfDeclaration(declaration) { + if (declaration === undefined) + return undefined; + return getNonAssignedNameOfDeclaration(declaration) || + (isFunctionExpression(declaration) || isClassExpression(declaration) ? getAssignedName(declaration) : undefined); + } + ts.getNameOfDeclaration = getNameOfDeclaration; + function getAssignedName(node) { + if (!node.parent) { + return undefined; + } + else if (isPropertyAssignment(node.parent) || isBindingElement(node.parent)) { + return node.parent.name; + } + else if (isBinaryExpression(node.parent) && node === node.parent.right) { + if (isIdentifier(node.parent.left)) { + return node.parent.left; + } + else if (ts.isAccessExpression(node.parent.left)) { + return ts.getElementOrPropertyAccessArgumentExpressionOrName(node.parent.left); + } + } + else if (isVariableDeclaration(node.parent) && isIdentifier(node.parent.name)) { + return node.parent.name; + } + } + /** + * Gets the JSDoc parameter tags for the node if present. + * + * @remarks Returns any JSDoc param tag whose name matches the provided + * parameter, whether a param tag on a containing function + * expression, or a param tag on a variable declaration whose + * initializer is the containing function. The tags closest to the + * node are returned first, so in the previous example, the param + * tag on the containing function expression would be first. + * + * For binding patterns, parameter tags are matched by position. + */ + function getJSDocParameterTags(param) { + if (param.name) { + if (isIdentifier(param.name)) { + var name_1 = param.name.escapedText; + return getJSDocTags(param.parent).filter(function (tag) { return isJSDocParameterTag(tag) && isIdentifier(tag.name) && tag.name.escapedText === name_1; }); + } + else { + var i = param.parent.parameters.indexOf(param); + ts.Debug.assert(i > -1, "Parameters should always be in their parents' parameter list"); + var paramTags = getJSDocTags(param.parent).filter(isJSDocParameterTag); + if (i < paramTags.length) { + return [paramTags[i]]; + } + } + } + // return empty array for: out-of-order binding patterns and JSDoc function syntax, which has un-named parameters + return ts.emptyArray; + } + ts.getJSDocParameterTags = getJSDocParameterTags; + /** + * Gets the JSDoc type parameter tags for the node if present. + * + * @remarks Returns any JSDoc template tag whose names match the provided + * parameter, whether a template tag on a containing function + * expression, or a template tag on a variable declaration whose + * initializer is the containing function. The tags closest to the + * node are returned first, so in the previous example, the template + * tag on the containing function expression would be first. + */ + function getJSDocTypeParameterTags(param) { + var name = param.name.escapedText; + return getJSDocTags(param.parent).filter(function (tag) { + return isJSDocTemplateTag(tag) && tag.typeParameters.some(function (tp) { return tp.name.escapedText === name; }); + }); + } + ts.getJSDocTypeParameterTags = getJSDocTypeParameterTags; + /** + * Return true if the node has JSDoc parameter tags. + * + * @remarks Includes parameter tags that are not directly on the node, + * for example on a variable declaration whose initializer is a function expression. + */ + function hasJSDocParameterTags(node) { + return !!getFirstJSDocTag(node, isJSDocParameterTag); + } + ts.hasJSDocParameterTags = hasJSDocParameterTags; + /** Gets the JSDoc augments tag for the node if present */ + function getJSDocAugmentsTag(node) { + return getFirstJSDocTag(node, isJSDocAugmentsTag); + } + ts.getJSDocAugmentsTag = getJSDocAugmentsTag; + /** Gets the JSDoc implements tags for the node if present */ + function getJSDocImplementsTags(node) { + return getAllJSDocTags(node, isJSDocImplementsTag); + } + ts.getJSDocImplementsTags = getJSDocImplementsTags; + /** Gets the JSDoc class tag for the node if present */ + function getJSDocClassTag(node) { + return getFirstJSDocTag(node, isJSDocClassTag); + } + ts.getJSDocClassTag = getJSDocClassTag; + /** Gets the JSDoc public tag for the node if present */ + function getJSDocPublicTag(node) { + return getFirstJSDocTag(node, isJSDocPublicTag); + } + ts.getJSDocPublicTag = getJSDocPublicTag; + /** Gets the JSDoc private tag for the node if present */ + function getJSDocPrivateTag(node) { + return getFirstJSDocTag(node, isJSDocPrivateTag); + } + ts.getJSDocPrivateTag = getJSDocPrivateTag; + /** Gets the JSDoc protected tag for the node if present */ + function getJSDocProtectedTag(node) { + return getFirstJSDocTag(node, isJSDocProtectedTag); + } + ts.getJSDocProtectedTag = getJSDocProtectedTag; + /** Gets the JSDoc protected tag for the node if present */ + function getJSDocReadonlyTag(node) { + return getFirstJSDocTag(node, isJSDocReadonlyTag); + } + ts.getJSDocReadonlyTag = getJSDocReadonlyTag; + /** Gets the JSDoc enum tag for the node if present */ + function getJSDocEnumTag(node) { + return getFirstJSDocTag(node, isJSDocEnumTag); + } + ts.getJSDocEnumTag = getJSDocEnumTag; + /** Gets the JSDoc this tag for the node if present */ + function getJSDocThisTag(node) { + return getFirstJSDocTag(node, isJSDocThisTag); + } + ts.getJSDocThisTag = getJSDocThisTag; + /** Gets the JSDoc return tag for the node if present */ + function getJSDocReturnTag(node) { + return getFirstJSDocTag(node, isJSDocReturnTag); + } + ts.getJSDocReturnTag = getJSDocReturnTag; + /** Gets the JSDoc template tag for the node if present */ + function getJSDocTemplateTag(node) { + return getFirstJSDocTag(node, isJSDocTemplateTag); + } + ts.getJSDocTemplateTag = getJSDocTemplateTag; + /** Gets the JSDoc type tag for the node if present and valid */ + function getJSDocTypeTag(node) { + // We should have already issued an error if there were multiple type jsdocs, so just use the first one. + var tag = getFirstJSDocTag(node, isJSDocTypeTag); + if (tag && tag.typeExpression && tag.typeExpression.type) { + return tag; + } + return undefined; + } + ts.getJSDocTypeTag = getJSDocTypeTag; + /** + * Gets the type node for the node if provided via JSDoc. + * + * @remarks The search includes any JSDoc param tag that relates + * to the provided parameter, for example a type tag on the + * parameter itself, or a param tag on a containing function + * expression, or a param tag on a variable declaration whose + * initializer is the containing function. The tags closest to the + * node are examined first, so in the previous example, the type + * tag directly on the node would be returned. + */ + function getJSDocType(node) { + var tag = getFirstJSDocTag(node, isJSDocTypeTag); + if (!tag && isParameter(node)) { + tag = ts.find(getJSDocParameterTags(node), function (tag) { return !!tag.typeExpression; }); + } + return tag && tag.typeExpression && tag.typeExpression.type; + } + ts.getJSDocType = getJSDocType; + /** + * Gets the return type node for the node if provided via JSDoc return tag or type tag. + * + * @remarks `getJSDocReturnTag` just gets the whole JSDoc tag. This function + * gets the type from inside the braces, after the fat arrow, etc. + */ + function getJSDocReturnType(node) { + var returnTag = getJSDocReturnTag(node); + if (returnTag && returnTag.typeExpression) { + return returnTag.typeExpression.type; + } + var typeTag = getJSDocTypeTag(node); + if (typeTag && typeTag.typeExpression) { + var type = typeTag.typeExpression.type; + if (isTypeLiteralNode(type)) { + var sig = ts.find(type.members, isCallSignatureDeclaration); + return sig && sig.type; + } + if (isFunctionTypeNode(type) || isJSDocFunctionType(type)) { + return type.type; + } + } + } + ts.getJSDocReturnType = getJSDocReturnType; + /** Get all JSDoc tags related to a node, including those on parent nodes. */ + function getJSDocTags(node) { + var tags = node.jsDocCache; + // If cache is 'null', that means we did the work of searching for JSDoc tags and came up with nothing. + if (tags === undefined) { + var comments = ts.getJSDocCommentsAndTags(node); + ts.Debug.assert(comments.length < 2 || comments[0] !== comments[1]); + node.jsDocCache = tags = ts.flatMap(comments, function (j) { return isJSDoc(j) ? j.tags : j; }); + } + return tags; + } + ts.getJSDocTags = getJSDocTags; + /** Get the first JSDoc tag of a specified kind, or undefined if not present. */ + function getFirstJSDocTag(node, predicate) { + return ts.find(getJSDocTags(node), predicate); + } + /** Gets all JSDoc tags that match a specified predicate */ + function getAllJSDocTags(node, predicate) { + return getJSDocTags(node).filter(predicate); + } + ts.getAllJSDocTags = getAllJSDocTags; + /** Gets all JSDoc tags of a specified kind */ + function getAllJSDocTagsOfKind(node, kind) { + return getJSDocTags(node).filter(function (doc) { return doc.kind === kind; }); + } + ts.getAllJSDocTagsOfKind = getAllJSDocTagsOfKind; + /** + * Gets the effective type parameters. If the node was parsed in a + * JavaScript file, gets the type parameters from the `@template` tag from JSDoc. + */ + function getEffectiveTypeParameterDeclarations(node) { + if (isJSDocSignature(node)) { + return ts.emptyArray; + } + if (ts.isJSDocTypeAlias(node)) { + ts.Debug.assert(node.parent.kind === 303 /* JSDocComment */); + return ts.flatMap(node.parent.tags, function (tag) { return isJSDocTemplateTag(tag) ? tag.typeParameters : undefined; }); + } + if (node.typeParameters) { + return node.typeParameters; + } + if (ts.isInJSFile(node)) { + var decls = ts.getJSDocTypeParameterDeclarations(node); + if (decls.length) { + return decls; + } + var typeTag = getJSDocType(node); + if (typeTag && isFunctionTypeNode(typeTag) && typeTag.typeParameters) { + return typeTag.typeParameters; + } + } + return ts.emptyArray; + } + ts.getEffectiveTypeParameterDeclarations = getEffectiveTypeParameterDeclarations; + function getEffectiveConstraintOfTypeParameter(node) { + return node.constraint ? node.constraint : + isJSDocTemplateTag(node.parent) && node === node.parent.typeParameters[0] ? node.parent.constraint : + undefined; + } + ts.getEffectiveConstraintOfTypeParameter = getEffectiveConstraintOfTypeParameter; + // #region + // Simple node tests of the form `node.kind === SyntaxKind.Foo`. + // Literals + function isNumericLiteral(node) { + return node.kind === 8 /* NumericLiteral */; + } + ts.isNumericLiteral = isNumericLiteral; + function isBigIntLiteral(node) { + return node.kind === 9 /* BigIntLiteral */; + } + ts.isBigIntLiteral = isBigIntLiteral; + function isStringLiteral(node) { + return node.kind === 10 /* StringLiteral */; + } + ts.isStringLiteral = isStringLiteral; + function isJsxText(node) { + return node.kind === 11 /* JsxText */; + } + ts.isJsxText = isJsxText; + function isRegularExpressionLiteral(node) { + return node.kind === 13 /* RegularExpressionLiteral */; + } + ts.isRegularExpressionLiteral = isRegularExpressionLiteral; + function isNoSubstitutionTemplateLiteral(node) { + return node.kind === 14 /* NoSubstitutionTemplateLiteral */; + } + ts.isNoSubstitutionTemplateLiteral = isNoSubstitutionTemplateLiteral; + // Pseudo-literals + function isTemplateHead(node) { + return node.kind === 15 /* TemplateHead */; + } + ts.isTemplateHead = isTemplateHead; + function isTemplateMiddle(node) { + return node.kind === 16 /* TemplateMiddle */; + } + ts.isTemplateMiddle = isTemplateMiddle; + function isTemplateTail(node) { + return node.kind === 17 /* TemplateTail */; + } + ts.isTemplateTail = isTemplateTail; + function isIdentifier(node) { + return node.kind === 75 /* Identifier */; + } + ts.isIdentifier = isIdentifier; + // Names + function isQualifiedName(node) { + return node.kind === 153 /* QualifiedName */; + } + ts.isQualifiedName = isQualifiedName; + function isComputedPropertyName(node) { + return node.kind === 154 /* ComputedPropertyName */; + } + ts.isComputedPropertyName = isComputedPropertyName; + function isPrivateIdentifier(node) { + return node.kind === 76 /* PrivateIdentifier */; + } + ts.isPrivateIdentifier = isPrivateIdentifier; + function isIdentifierOrPrivateIdentifier(node) { + return node.kind === 75 /* Identifier */ || node.kind === 76 /* PrivateIdentifier */; + } + ts.isIdentifierOrPrivateIdentifier = isIdentifierOrPrivateIdentifier; + // Signature elements + function isTypeParameterDeclaration(node) { + return node.kind === 155 /* TypeParameter */; + } + ts.isTypeParameterDeclaration = isTypeParameterDeclaration; + function isParameter(node) { + return node.kind === 156 /* Parameter */; + } + ts.isParameter = isParameter; + function isDecorator(node) { + return node.kind === 157 /* Decorator */; + } + ts.isDecorator = isDecorator; + // TypeMember + function isPropertySignature(node) { + return node.kind === 158 /* PropertySignature */; + } + ts.isPropertySignature = isPropertySignature; + function isPropertyDeclaration(node) { + return node.kind === 159 /* PropertyDeclaration */; + } + ts.isPropertyDeclaration = isPropertyDeclaration; + function isMethodSignature(node) { + return node.kind === 160 /* MethodSignature */; + } + ts.isMethodSignature = isMethodSignature; + function isMethodDeclaration(node) { + return node.kind === 161 /* MethodDeclaration */; + } + ts.isMethodDeclaration = isMethodDeclaration; + function isConstructorDeclaration(node) { + return node.kind === 162 /* Constructor */; + } + ts.isConstructorDeclaration = isConstructorDeclaration; + function isGetAccessorDeclaration(node) { + return node.kind === 163 /* GetAccessor */; + } + ts.isGetAccessorDeclaration = isGetAccessorDeclaration; + function isSetAccessorDeclaration(node) { + return node.kind === 164 /* SetAccessor */; + } + ts.isSetAccessorDeclaration = isSetAccessorDeclaration; + function isCallSignatureDeclaration(node) { + return node.kind === 165 /* CallSignature */; + } + ts.isCallSignatureDeclaration = isCallSignatureDeclaration; + function isConstructSignatureDeclaration(node) { + return node.kind === 166 /* ConstructSignature */; + } + ts.isConstructSignatureDeclaration = isConstructSignatureDeclaration; + function isIndexSignatureDeclaration(node) { + return node.kind === 167 /* IndexSignature */; + } + ts.isIndexSignatureDeclaration = isIndexSignatureDeclaration; + /* @internal */ + function isGetOrSetAccessorDeclaration(node) { + return node.kind === 164 /* SetAccessor */ || node.kind === 163 /* GetAccessor */; + } + ts.isGetOrSetAccessorDeclaration = isGetOrSetAccessorDeclaration; + // Type + function isTypePredicateNode(node) { + return node.kind === 168 /* TypePredicate */; + } + ts.isTypePredicateNode = isTypePredicateNode; + function isTypeReferenceNode(node) { + return node.kind === 169 /* TypeReference */; + } + ts.isTypeReferenceNode = isTypeReferenceNode; + function isFunctionTypeNode(node) { + return node.kind === 170 /* FunctionType */; + } + ts.isFunctionTypeNode = isFunctionTypeNode; + function isConstructorTypeNode(node) { + return node.kind === 171 /* ConstructorType */; + } + ts.isConstructorTypeNode = isConstructorTypeNode; + function isTypeQueryNode(node) { + return node.kind === 172 /* TypeQuery */; + } + ts.isTypeQueryNode = isTypeQueryNode; + function isTypeLiteralNode(node) { + return node.kind === 173 /* TypeLiteral */; + } + ts.isTypeLiteralNode = isTypeLiteralNode; + function isArrayTypeNode(node) { + return node.kind === 174 /* ArrayType */; + } + ts.isArrayTypeNode = isArrayTypeNode; + function isTupleTypeNode(node) { + return node.kind === 175 /* TupleType */; + } + ts.isTupleTypeNode = isTupleTypeNode; + function isUnionTypeNode(node) { + return node.kind === 178 /* UnionType */; + } + ts.isUnionTypeNode = isUnionTypeNode; + function isIntersectionTypeNode(node) { + return node.kind === 179 /* IntersectionType */; + } + ts.isIntersectionTypeNode = isIntersectionTypeNode; + function isConditionalTypeNode(node) { + return node.kind === 180 /* ConditionalType */; + } + ts.isConditionalTypeNode = isConditionalTypeNode; + function isInferTypeNode(node) { + return node.kind === 181 /* InferType */; + } + ts.isInferTypeNode = isInferTypeNode; + function isParenthesizedTypeNode(node) { + return node.kind === 182 /* ParenthesizedType */; + } + ts.isParenthesizedTypeNode = isParenthesizedTypeNode; + function isThisTypeNode(node) { + return node.kind === 183 /* ThisType */; + } + ts.isThisTypeNode = isThisTypeNode; + function isTypeOperatorNode(node) { + return node.kind === 184 /* TypeOperator */; + } + ts.isTypeOperatorNode = isTypeOperatorNode; + function isIndexedAccessTypeNode(node) { + return node.kind === 185 /* IndexedAccessType */; + } + ts.isIndexedAccessTypeNode = isIndexedAccessTypeNode; + function isMappedTypeNode(node) { + return node.kind === 186 /* MappedType */; + } + ts.isMappedTypeNode = isMappedTypeNode; + function isLiteralTypeNode(node) { + return node.kind === 187 /* LiteralType */; + } + ts.isLiteralTypeNode = isLiteralTypeNode; + function isImportTypeNode(node) { + return node.kind === 188 /* ImportType */; + } + ts.isImportTypeNode = isImportTypeNode; + // Binding patterns + function isObjectBindingPattern(node) { + return node.kind === 189 /* ObjectBindingPattern */; + } + ts.isObjectBindingPattern = isObjectBindingPattern; + function isArrayBindingPattern(node) { + return node.kind === 190 /* ArrayBindingPattern */; + } + ts.isArrayBindingPattern = isArrayBindingPattern; + function isBindingElement(node) { + return node.kind === 191 /* BindingElement */; + } + ts.isBindingElement = isBindingElement; + // Expression + function isArrayLiteralExpression(node) { + return node.kind === 192 /* ArrayLiteralExpression */; + } + ts.isArrayLiteralExpression = isArrayLiteralExpression; + function isObjectLiteralExpression(node) { + return node.kind === 193 /* ObjectLiteralExpression */; + } + ts.isObjectLiteralExpression = isObjectLiteralExpression; + function isPropertyAccessExpression(node) { + return node.kind === 194 /* PropertyAccessExpression */; + } + ts.isPropertyAccessExpression = isPropertyAccessExpression; + function isPropertyAccessChain(node) { + return isPropertyAccessExpression(node) && !!(node.flags & 32 /* OptionalChain */); + } + ts.isPropertyAccessChain = isPropertyAccessChain; + function isElementAccessExpression(node) { + return node.kind === 195 /* ElementAccessExpression */; + } + ts.isElementAccessExpression = isElementAccessExpression; + function isElementAccessChain(node) { + return isElementAccessExpression(node) && !!(node.flags & 32 /* OptionalChain */); + } + ts.isElementAccessChain = isElementAccessChain; + function isCallExpression(node) { + return node.kind === 196 /* CallExpression */; + } + ts.isCallExpression = isCallExpression; + function isCallChain(node) { + return isCallExpression(node) && !!(node.flags & 32 /* OptionalChain */); + } + ts.isCallChain = isCallChain; + function isOptionalChain(node) { + var kind = node.kind; + return !!(node.flags & 32 /* OptionalChain */) && + (kind === 194 /* PropertyAccessExpression */ + || kind === 195 /* ElementAccessExpression */ + || kind === 196 /* CallExpression */ + || kind === 218 /* NonNullExpression */); + } + ts.isOptionalChain = isOptionalChain; + /* @internal */ + function isOptionalChainRoot(node) { + return isOptionalChain(node) && !isNonNullExpression(node) && !!node.questionDotToken; + } + ts.isOptionalChainRoot = isOptionalChainRoot; + /** + * Determines whether a node is the expression preceding an optional chain (i.e. `a` in `a?.b`). + */ + /* @internal */ + function isExpressionOfOptionalChainRoot(node) { + return isOptionalChainRoot(node.parent) && node.parent.expression === node; + } + ts.isExpressionOfOptionalChainRoot = isExpressionOfOptionalChainRoot; + /** + * Determines whether a node is the outermost `OptionalChain` in an ECMAScript `OptionalExpression`: + * + * 1. For `a?.b.c`, the outermost chain is `a?.b.c` (`c` is the end of the chain starting at `a?.`) + * 2. For `a?.b!`, the outermost chain is `a?.b` (`b` is the end of the chain starting at `a?.`) + * 3. For `(a?.b.c).d`, the outermost chain is `a?.b.c` (`c` is the end of the chain starting at `a?.` since parens end the chain) + * 4. For `a?.b.c?.d`, both `a?.b.c` and `a?.b.c?.d` are outermost (`c` is the end of the chain starting at `a?.`, and `d` is + * the end of the chain starting at `c?.`) + * 5. For `a?.(b?.c).d`, both `b?.c` and `a?.(b?.c)d` are outermost (`c` is the end of the chain starting at `b`, and `d` is + * the end of the chain starting at `a?.`) + */ + /* @internal */ + function isOutermostOptionalChain(node) { + return !isOptionalChain(node.parent) // cases 1, 2, and 3 + || isOptionalChainRoot(node.parent) // case 4 + || node !== node.parent.expression; // case 5 + } + ts.isOutermostOptionalChain = isOutermostOptionalChain; + function isNullishCoalesce(node) { + return node.kind === 209 /* BinaryExpression */ && node.operatorToken.kind === 60 /* QuestionQuestionToken */; + } + ts.isNullishCoalesce = isNullishCoalesce; + function isNewExpression(node) { + return node.kind === 197 /* NewExpression */; + } + ts.isNewExpression = isNewExpression; + function isTaggedTemplateExpression(node) { + return node.kind === 198 /* TaggedTemplateExpression */; + } + ts.isTaggedTemplateExpression = isTaggedTemplateExpression; + function isTypeAssertion(node) { + return node.kind === 199 /* TypeAssertionExpression */; + } + ts.isTypeAssertion = isTypeAssertion; + function isConstTypeReference(node) { + return isTypeReferenceNode(node) && isIdentifier(node.typeName) && + node.typeName.escapedText === "const" && !node.typeArguments; + } + ts.isConstTypeReference = isConstTypeReference; + function isParenthesizedExpression(node) { + return node.kind === 200 /* ParenthesizedExpression */; + } + ts.isParenthesizedExpression = isParenthesizedExpression; + function skipPartiallyEmittedExpressions(node) { + return ts.skipOuterExpressions(node, 8 /* PartiallyEmittedExpressions */); + } + ts.skipPartiallyEmittedExpressions = skipPartiallyEmittedExpressions; + function isFunctionExpression(node) { + return node.kind === 201 /* FunctionExpression */; + } + ts.isFunctionExpression = isFunctionExpression; + function isArrowFunction(node) { + return node.kind === 202 /* ArrowFunction */; + } + ts.isArrowFunction = isArrowFunction; + function isDeleteExpression(node) { + return node.kind === 203 /* DeleteExpression */; + } + ts.isDeleteExpression = isDeleteExpression; + function isTypeOfExpression(node) { + return node.kind === 204 /* TypeOfExpression */; + } + ts.isTypeOfExpression = isTypeOfExpression; + function isVoidExpression(node) { + return node.kind === 205 /* VoidExpression */; + } + ts.isVoidExpression = isVoidExpression; + function isAwaitExpression(node) { + return node.kind === 206 /* AwaitExpression */; + } + ts.isAwaitExpression = isAwaitExpression; + function isPrefixUnaryExpression(node) { + return node.kind === 207 /* PrefixUnaryExpression */; + } + ts.isPrefixUnaryExpression = isPrefixUnaryExpression; + function isPostfixUnaryExpression(node) { + return node.kind === 208 /* PostfixUnaryExpression */; + } + ts.isPostfixUnaryExpression = isPostfixUnaryExpression; + function isBinaryExpression(node) { + return node.kind === 209 /* BinaryExpression */; + } + ts.isBinaryExpression = isBinaryExpression; + function isConditionalExpression(node) { + return node.kind === 210 /* ConditionalExpression */; + } + ts.isConditionalExpression = isConditionalExpression; + function isTemplateExpression(node) { + return node.kind === 211 /* TemplateExpression */; + } + ts.isTemplateExpression = isTemplateExpression; + function isYieldExpression(node) { + return node.kind === 212 /* YieldExpression */; + } + ts.isYieldExpression = isYieldExpression; + function isSpreadElement(node) { + return node.kind === 213 /* SpreadElement */; + } + ts.isSpreadElement = isSpreadElement; + function isClassExpression(node) { + return node.kind === 214 /* ClassExpression */; + } + ts.isClassExpression = isClassExpression; + function isOmittedExpression(node) { + return node.kind === 215 /* OmittedExpression */; + } + ts.isOmittedExpression = isOmittedExpression; + function isExpressionWithTypeArguments(node) { + return node.kind === 216 /* ExpressionWithTypeArguments */; + } + ts.isExpressionWithTypeArguments = isExpressionWithTypeArguments; + function isAsExpression(node) { + return node.kind === 217 /* AsExpression */; + } + ts.isAsExpression = isAsExpression; + function isNonNullExpression(node) { + return node.kind === 218 /* NonNullExpression */; + } + ts.isNonNullExpression = isNonNullExpression; + function isNonNullChain(node) { + return isNonNullExpression(node) && !!(node.flags & 32 /* OptionalChain */); + } + ts.isNonNullChain = isNonNullChain; + function isMetaProperty(node) { + return node.kind === 219 /* MetaProperty */; + } + ts.isMetaProperty = isMetaProperty; + // Misc + function isTemplateSpan(node) { + return node.kind === 221 /* TemplateSpan */; + } + ts.isTemplateSpan = isTemplateSpan; + function isSemicolonClassElement(node) { + return node.kind === 222 /* SemicolonClassElement */; + } + ts.isSemicolonClassElement = isSemicolonClassElement; + // Block + function isBlock(node) { + return node.kind === 223 /* Block */; + } + ts.isBlock = isBlock; + function isVariableStatement(node) { + return node.kind === 225 /* VariableStatement */; + } + ts.isVariableStatement = isVariableStatement; + function isEmptyStatement(node) { + return node.kind === 224 /* EmptyStatement */; + } + ts.isEmptyStatement = isEmptyStatement; + function isExpressionStatement(node) { + return node.kind === 226 /* ExpressionStatement */; + } + ts.isExpressionStatement = isExpressionStatement; + function isIfStatement(node) { + return node.kind === 227 /* IfStatement */; + } + ts.isIfStatement = isIfStatement; + function isDoStatement(node) { + return node.kind === 228 /* DoStatement */; + } + ts.isDoStatement = isDoStatement; + function isWhileStatement(node) { + return node.kind === 229 /* WhileStatement */; + } + ts.isWhileStatement = isWhileStatement; + function isForStatement(node) { + return node.kind === 230 /* ForStatement */; + } + ts.isForStatement = isForStatement; + function isForInStatement(node) { + return node.kind === 231 /* ForInStatement */; + } + ts.isForInStatement = isForInStatement; + function isForOfStatement(node) { + return node.kind === 232 /* ForOfStatement */; + } + ts.isForOfStatement = isForOfStatement; + function isContinueStatement(node) { + return node.kind === 233 /* ContinueStatement */; + } + ts.isContinueStatement = isContinueStatement; + function isBreakStatement(node) { + return node.kind === 234 /* BreakStatement */; + } + ts.isBreakStatement = isBreakStatement; + function isBreakOrContinueStatement(node) { + return node.kind === 234 /* BreakStatement */ || node.kind === 233 /* ContinueStatement */; + } + ts.isBreakOrContinueStatement = isBreakOrContinueStatement; + function isReturnStatement(node) { + return node.kind === 235 /* ReturnStatement */; + } + ts.isReturnStatement = isReturnStatement; + function isWithStatement(node) { + return node.kind === 236 /* WithStatement */; + } + ts.isWithStatement = isWithStatement; + function isSwitchStatement(node) { + return node.kind === 237 /* SwitchStatement */; + } + ts.isSwitchStatement = isSwitchStatement; + function isLabeledStatement(node) { + return node.kind === 238 /* LabeledStatement */; + } + ts.isLabeledStatement = isLabeledStatement; + function isThrowStatement(node) { + return node.kind === 239 /* ThrowStatement */; + } + ts.isThrowStatement = isThrowStatement; + function isTryStatement(node) { + return node.kind === 240 /* TryStatement */; + } + ts.isTryStatement = isTryStatement; + function isDebuggerStatement(node) { + return node.kind === 241 /* DebuggerStatement */; + } + ts.isDebuggerStatement = isDebuggerStatement; + function isVariableDeclaration(node) { + return node.kind === 242 /* VariableDeclaration */; + } + ts.isVariableDeclaration = isVariableDeclaration; + function isVariableDeclarationList(node) { + return node.kind === 243 /* VariableDeclarationList */; + } + ts.isVariableDeclarationList = isVariableDeclarationList; + function isFunctionDeclaration(node) { + return node.kind === 244 /* FunctionDeclaration */; + } + ts.isFunctionDeclaration = isFunctionDeclaration; + function isClassDeclaration(node) { + return node.kind === 245 /* ClassDeclaration */; + } + ts.isClassDeclaration = isClassDeclaration; + function isInterfaceDeclaration(node) { + return node.kind === 246 /* InterfaceDeclaration */; + } + ts.isInterfaceDeclaration = isInterfaceDeclaration; + function isTypeAliasDeclaration(node) { + return node.kind === 247 /* TypeAliasDeclaration */; + } + ts.isTypeAliasDeclaration = isTypeAliasDeclaration; + function isEnumDeclaration(node) { + return node.kind === 248 /* EnumDeclaration */; + } + ts.isEnumDeclaration = isEnumDeclaration; + function isModuleDeclaration(node) { + return node.kind === 249 /* ModuleDeclaration */; + } + ts.isModuleDeclaration = isModuleDeclaration; + function isModuleBlock(node) { + return node.kind === 250 /* ModuleBlock */; + } + ts.isModuleBlock = isModuleBlock; + function isCaseBlock(node) { + return node.kind === 251 /* CaseBlock */; + } + ts.isCaseBlock = isCaseBlock; + function isNamespaceExportDeclaration(node) { + return node.kind === 252 /* NamespaceExportDeclaration */; + } + ts.isNamespaceExportDeclaration = isNamespaceExportDeclaration; + function isImportEqualsDeclaration(node) { + return node.kind === 253 /* ImportEqualsDeclaration */; + } + ts.isImportEqualsDeclaration = isImportEqualsDeclaration; + function isImportDeclaration(node) { + return node.kind === 254 /* ImportDeclaration */; + } + ts.isImportDeclaration = isImportDeclaration; + function isImportClause(node) { + return node.kind === 255 /* ImportClause */; + } + ts.isImportClause = isImportClause; + function isNamespaceImport(node) { + return node.kind === 256 /* NamespaceImport */; + } + ts.isNamespaceImport = isNamespaceImport; + function isNamespaceExport(node) { + return node.kind === 262 /* NamespaceExport */; + } + ts.isNamespaceExport = isNamespaceExport; + function isNamedExportBindings(node) { + return node.kind === 262 /* NamespaceExport */ || node.kind === 261 /* NamedExports */; + } + ts.isNamedExportBindings = isNamedExportBindings; + function isNamedImports(node) { + return node.kind === 257 /* NamedImports */; + } + ts.isNamedImports = isNamedImports; + function isImportSpecifier(node) { + return node.kind === 258 /* ImportSpecifier */; + } + ts.isImportSpecifier = isImportSpecifier; + function isExportAssignment(node) { + return node.kind === 259 /* ExportAssignment */; + } + ts.isExportAssignment = isExportAssignment; + function isExportDeclaration(node) { + return node.kind === 260 /* ExportDeclaration */; + } + ts.isExportDeclaration = isExportDeclaration; + function isNamedExports(node) { + return node.kind === 261 /* NamedExports */; + } + ts.isNamedExports = isNamedExports; + function isExportSpecifier(node) { + return node.kind === 263 /* ExportSpecifier */; + } + ts.isExportSpecifier = isExportSpecifier; + function isMissingDeclaration(node) { + return node.kind === 264 /* MissingDeclaration */; + } + ts.isMissingDeclaration = isMissingDeclaration; + // Module References + function isExternalModuleReference(node) { + return node.kind === 265 /* ExternalModuleReference */; + } + ts.isExternalModuleReference = isExternalModuleReference; + // JSX + function isJsxElement(node) { + return node.kind === 266 /* JsxElement */; + } + ts.isJsxElement = isJsxElement; + function isJsxSelfClosingElement(node) { + return node.kind === 267 /* JsxSelfClosingElement */; + } + ts.isJsxSelfClosingElement = isJsxSelfClosingElement; + function isJsxOpeningElement(node) { + return node.kind === 268 /* JsxOpeningElement */; + } + ts.isJsxOpeningElement = isJsxOpeningElement; + function isJsxClosingElement(node) { + return node.kind === 269 /* JsxClosingElement */; + } + ts.isJsxClosingElement = isJsxClosingElement; + function isJsxFragment(node) { + return node.kind === 270 /* JsxFragment */; + } + ts.isJsxFragment = isJsxFragment; + function isJsxOpeningFragment(node) { + return node.kind === 271 /* JsxOpeningFragment */; + } + ts.isJsxOpeningFragment = isJsxOpeningFragment; + function isJsxClosingFragment(node) { + return node.kind === 272 /* JsxClosingFragment */; + } + ts.isJsxClosingFragment = isJsxClosingFragment; + function isJsxAttribute(node) { + return node.kind === 273 /* JsxAttribute */; + } + ts.isJsxAttribute = isJsxAttribute; + function isJsxAttributes(node) { + return node.kind === 274 /* JsxAttributes */; + } + ts.isJsxAttributes = isJsxAttributes; + function isJsxSpreadAttribute(node) { + return node.kind === 275 /* JsxSpreadAttribute */; + } + ts.isJsxSpreadAttribute = isJsxSpreadAttribute; + function isJsxExpression(node) { + return node.kind === 276 /* JsxExpression */; + } + ts.isJsxExpression = isJsxExpression; + // Clauses + function isCaseClause(node) { + return node.kind === 277 /* CaseClause */; + } + ts.isCaseClause = isCaseClause; + function isDefaultClause(node) { + return node.kind === 278 /* DefaultClause */; + } + ts.isDefaultClause = isDefaultClause; + function isHeritageClause(node) { + return node.kind === 279 /* HeritageClause */; + } + ts.isHeritageClause = isHeritageClause; + function isCatchClause(node) { + return node.kind === 280 /* CatchClause */; + } + ts.isCatchClause = isCatchClause; + // Property assignments + function isPropertyAssignment(node) { + return node.kind === 281 /* PropertyAssignment */; + } + ts.isPropertyAssignment = isPropertyAssignment; + function isShorthandPropertyAssignment(node) { + return node.kind === 282 /* ShorthandPropertyAssignment */; + } + ts.isShorthandPropertyAssignment = isShorthandPropertyAssignment; + function isSpreadAssignment(node) { + return node.kind === 283 /* SpreadAssignment */; + } + ts.isSpreadAssignment = isSpreadAssignment; + // Enum + function isEnumMember(node) { + return node.kind === 284 /* EnumMember */; + } + ts.isEnumMember = isEnumMember; + // Top-level nodes + function isSourceFile(node) { + return node.kind === 290 /* SourceFile */; + } + ts.isSourceFile = isSourceFile; + function isBundle(node) { + return node.kind === 291 /* Bundle */; + } + ts.isBundle = isBundle; + function isUnparsedSource(node) { + return node.kind === 292 /* UnparsedSource */; + } + ts.isUnparsedSource = isUnparsedSource; + function isUnparsedPrepend(node) { + return node.kind === 286 /* UnparsedPrepend */; + } + ts.isUnparsedPrepend = isUnparsedPrepend; + function isUnparsedTextLike(node) { + switch (node.kind) { + case 287 /* UnparsedText */: + case 288 /* UnparsedInternalText */: + return true; + default: + return false; + } + } + ts.isUnparsedTextLike = isUnparsedTextLike; + function isUnparsedNode(node) { + return isUnparsedTextLike(node) || + node.kind === 285 /* UnparsedPrologue */ || + node.kind === 289 /* UnparsedSyntheticReference */; + } + ts.isUnparsedNode = isUnparsedNode; + // JSDoc + function isJSDocTypeExpression(node) { + return node.kind === 294 /* JSDocTypeExpression */; + } + ts.isJSDocTypeExpression = isJSDocTypeExpression; + function isJSDocAllType(node) { + return node.kind === 295 /* JSDocAllType */; + } + ts.isJSDocAllType = isJSDocAllType; + function isJSDocUnknownType(node) { + return node.kind === 296 /* JSDocUnknownType */; + } + ts.isJSDocUnknownType = isJSDocUnknownType; + function isJSDocNullableType(node) { + return node.kind === 297 /* JSDocNullableType */; + } + ts.isJSDocNullableType = isJSDocNullableType; + function isJSDocNonNullableType(node) { + return node.kind === 298 /* JSDocNonNullableType */; + } + ts.isJSDocNonNullableType = isJSDocNonNullableType; + function isJSDocOptionalType(node) { + return node.kind === 299 /* JSDocOptionalType */; + } + ts.isJSDocOptionalType = isJSDocOptionalType; + function isJSDocFunctionType(node) { + return node.kind === 300 /* JSDocFunctionType */; + } + ts.isJSDocFunctionType = isJSDocFunctionType; + function isJSDocVariadicType(node) { + return node.kind === 301 /* JSDocVariadicType */; + } + ts.isJSDocVariadicType = isJSDocVariadicType; + function isJSDoc(node) { + return node.kind === 303 /* JSDocComment */; + } + ts.isJSDoc = isJSDoc; + function isJSDocAuthorTag(node) { + return node.kind === 309 /* JSDocAuthorTag */; + } + ts.isJSDocAuthorTag = isJSDocAuthorTag; + function isJSDocAugmentsTag(node) { + return node.kind === 307 /* JSDocAugmentsTag */; + } + ts.isJSDocAugmentsTag = isJSDocAugmentsTag; + function isJSDocImplementsTag(node) { + return node.kind === 308 /* JSDocImplementsTag */; + } + ts.isJSDocImplementsTag = isJSDocImplementsTag; + function isJSDocClassTag(node) { + return node.kind === 310 /* JSDocClassTag */; + } + ts.isJSDocClassTag = isJSDocClassTag; + function isJSDocPublicTag(node) { + return node.kind === 311 /* JSDocPublicTag */; + } + ts.isJSDocPublicTag = isJSDocPublicTag; + function isJSDocPrivateTag(node) { + return node.kind === 312 /* JSDocPrivateTag */; + } + ts.isJSDocPrivateTag = isJSDocPrivateTag; + function isJSDocProtectedTag(node) { + return node.kind === 313 /* JSDocProtectedTag */; + } + ts.isJSDocProtectedTag = isJSDocProtectedTag; + function isJSDocReadonlyTag(node) { + return node.kind === 314 /* JSDocReadonlyTag */; + } + ts.isJSDocReadonlyTag = isJSDocReadonlyTag; + function isJSDocEnumTag(node) { + return node.kind === 316 /* JSDocEnumTag */; + } + ts.isJSDocEnumTag = isJSDocEnumTag; + function isJSDocThisTag(node) { + return node.kind === 319 /* JSDocThisTag */; + } + ts.isJSDocThisTag = isJSDocThisTag; + function isJSDocParameterTag(node) { + return node.kind === 317 /* JSDocParameterTag */; + } + ts.isJSDocParameterTag = isJSDocParameterTag; + function isJSDocReturnTag(node) { + return node.kind === 318 /* JSDocReturnTag */; + } + ts.isJSDocReturnTag = isJSDocReturnTag; + function isJSDocTypeTag(node) { + return node.kind === 320 /* JSDocTypeTag */; + } + ts.isJSDocTypeTag = isJSDocTypeTag; + function isJSDocTemplateTag(node) { + return node.kind === 321 /* JSDocTemplateTag */; + } + ts.isJSDocTemplateTag = isJSDocTemplateTag; + function isJSDocTypedefTag(node) { + return node.kind === 322 /* JSDocTypedefTag */; + } + ts.isJSDocTypedefTag = isJSDocTypedefTag; + function isJSDocPropertyTag(node) { + return node.kind === 323 /* JSDocPropertyTag */; + } + ts.isJSDocPropertyTag = isJSDocPropertyTag; + function isJSDocPropertyLikeTag(node) { + return node.kind === 323 /* JSDocPropertyTag */ || node.kind === 317 /* JSDocParameterTag */; + } + ts.isJSDocPropertyLikeTag = isJSDocPropertyLikeTag; + function isJSDocTypeLiteral(node) { + return node.kind === 304 /* JSDocTypeLiteral */; + } + ts.isJSDocTypeLiteral = isJSDocTypeLiteral; + function isJSDocCallbackTag(node) { + return node.kind === 315 /* JSDocCallbackTag */; + } + ts.isJSDocCallbackTag = isJSDocCallbackTag; + function isJSDocSignature(node) { + return node.kind === 305 /* JSDocSignature */; + } + ts.isJSDocSignature = isJSDocSignature; + // #endregion + // #region + // Node tests + // + // All node tests in the following list should *not* reference parent pointers so that + // they may be used with transformations. + /* @internal */ + function isSyntaxList(n) { + return n.kind === 324 /* SyntaxList */; + } + ts.isSyntaxList = isSyntaxList; + /* @internal */ + function isNode(node) { + return isNodeKind(node.kind); + } + ts.isNode = isNode; + /* @internal */ + function isNodeKind(kind) { + return kind >= 153 /* FirstNode */; + } + ts.isNodeKind = isNodeKind; + /** + * True if node is of some token syntax kind. + * For example, this is true for an IfKeyword but not for an IfStatement. + * Literals are considered tokens, except TemplateLiteral, but does include TemplateHead/Middle/Tail. + */ + function isToken(n) { + return n.kind >= 0 /* FirstToken */ && n.kind <= 152 /* LastToken */; + } + ts.isToken = isToken; + // Node Arrays + /* @internal */ + function isNodeArray(array) { + return array.hasOwnProperty("pos") && array.hasOwnProperty("end"); + } + ts.isNodeArray = isNodeArray; + // Literals + /* @internal */ + function isLiteralKind(kind) { + return 8 /* FirstLiteralToken */ <= kind && kind <= 14 /* LastLiteralToken */; + } + ts.isLiteralKind = isLiteralKind; + function isLiteralExpression(node) { + return isLiteralKind(node.kind); + } + ts.isLiteralExpression = isLiteralExpression; + // Pseudo-literals + /* @internal */ + function isTemplateLiteralKind(kind) { + return 14 /* FirstTemplateToken */ <= kind && kind <= 17 /* LastTemplateToken */; + } + ts.isTemplateLiteralKind = isTemplateLiteralKind; + function isTemplateLiteralToken(node) { + return isTemplateLiteralKind(node.kind); + } + ts.isTemplateLiteralToken = isTemplateLiteralToken; + function isTemplateMiddleOrTemplateTail(node) { + var kind = node.kind; + return kind === 16 /* TemplateMiddle */ + || kind === 17 /* TemplateTail */; + } + ts.isTemplateMiddleOrTemplateTail = isTemplateMiddleOrTemplateTail; + function isImportOrExportSpecifier(node) { + return isImportSpecifier(node) || isExportSpecifier(node); + } + ts.isImportOrExportSpecifier = isImportOrExportSpecifier; + function isTypeOnlyImportOrExportDeclaration(node) { + switch (node.kind) { + case 258 /* ImportSpecifier */: + case 263 /* ExportSpecifier */: + return node.parent.parent.isTypeOnly; + case 256 /* NamespaceImport */: + return node.parent.isTypeOnly; + case 255 /* ImportClause */: + return node.isTypeOnly; + default: + return false; + } + } + ts.isTypeOnlyImportOrExportDeclaration = isTypeOnlyImportOrExportDeclaration; + function isStringTextContainingNode(node) { + return node.kind === 10 /* StringLiteral */ || isTemplateLiteralKind(node.kind); + } + ts.isStringTextContainingNode = isStringTextContainingNode; + // Identifiers + /* @internal */ + function isGeneratedIdentifier(node) { + return isIdentifier(node) && (node.autoGenerateFlags & 7 /* KindMask */) > 0 /* None */; + } + ts.isGeneratedIdentifier = isGeneratedIdentifier; + // Private Identifiers + /*@internal*/ + function isPrivateIdentifierPropertyDeclaration(node) { + return isPropertyDeclaration(node) && isPrivateIdentifier(node.name); + } + ts.isPrivateIdentifierPropertyDeclaration = isPrivateIdentifierPropertyDeclaration; + /*@internal*/ + function isPrivateIdentifierPropertyAccessExpression(node) { + return isPropertyAccessExpression(node) && isPrivateIdentifier(node.name); + } + ts.isPrivateIdentifierPropertyAccessExpression = isPrivateIdentifierPropertyAccessExpression; + // Keywords + /* @internal */ + function isModifierKind(token) { + switch (token) { + case 122 /* AbstractKeyword */: + case 126 /* AsyncKeyword */: + case 81 /* ConstKeyword */: + case 130 /* DeclareKeyword */: + case 84 /* DefaultKeyword */: + case 89 /* ExportKeyword */: + case 119 /* PublicKeyword */: + case 117 /* PrivateKeyword */: + case 118 /* ProtectedKeyword */: + case 138 /* ReadonlyKeyword */: + case 120 /* StaticKeyword */: + return true; + } + return false; + } + ts.isModifierKind = isModifierKind; + /* @internal */ + function isParameterPropertyModifier(kind) { + return !!(ts.modifierToFlag(kind) & 92 /* ParameterPropertyModifier */); + } + ts.isParameterPropertyModifier = isParameterPropertyModifier; + /* @internal */ + function isClassMemberModifier(idToken) { + return isParameterPropertyModifier(idToken) || idToken === 120 /* StaticKeyword */; + } + ts.isClassMemberModifier = isClassMemberModifier; + function isModifier(node) { + return isModifierKind(node.kind); + } + ts.isModifier = isModifier; + function isEntityName(node) { + var kind = node.kind; + return kind === 153 /* QualifiedName */ + || kind === 75 /* Identifier */; + } + ts.isEntityName = isEntityName; + function isPropertyName(node) { + var kind = node.kind; + return kind === 75 /* Identifier */ + || kind === 76 /* PrivateIdentifier */ + || kind === 10 /* StringLiteral */ + || kind === 8 /* NumericLiteral */ + || kind === 154 /* ComputedPropertyName */; + } + ts.isPropertyName = isPropertyName; + function isBindingName(node) { + var kind = node.kind; + return kind === 75 /* Identifier */ + || kind === 189 /* ObjectBindingPattern */ + || kind === 190 /* ArrayBindingPattern */; + } + ts.isBindingName = isBindingName; + // Functions + function isFunctionLike(node) { + return node && isFunctionLikeKind(node.kind); + } + ts.isFunctionLike = isFunctionLike; + /* @internal */ + function isFunctionLikeDeclaration(node) { + return node && isFunctionLikeDeclarationKind(node.kind); + } + ts.isFunctionLikeDeclaration = isFunctionLikeDeclaration; + function isFunctionLikeDeclarationKind(kind) { + switch (kind) { + case 244 /* FunctionDeclaration */: + case 161 /* MethodDeclaration */: + case 162 /* Constructor */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + case 201 /* FunctionExpression */: + case 202 /* ArrowFunction */: + return true; + default: + return false; + } + } + /* @internal */ + function isFunctionLikeKind(kind) { + switch (kind) { + case 160 /* MethodSignature */: + case 165 /* CallSignature */: + case 305 /* JSDocSignature */: + case 166 /* ConstructSignature */: + case 167 /* IndexSignature */: + case 170 /* FunctionType */: + case 300 /* JSDocFunctionType */: + case 171 /* ConstructorType */: + return true; + default: + return isFunctionLikeDeclarationKind(kind); + } + } + ts.isFunctionLikeKind = isFunctionLikeKind; + /* @internal */ + function isFunctionOrModuleBlock(node) { + return isSourceFile(node) || isModuleBlock(node) || isBlock(node) && isFunctionLike(node.parent); + } + ts.isFunctionOrModuleBlock = isFunctionOrModuleBlock; + // Classes + function isClassElement(node) { + var kind = node.kind; + return kind === 162 /* Constructor */ + || kind === 159 /* PropertyDeclaration */ + || kind === 161 /* MethodDeclaration */ + || kind === 163 /* GetAccessor */ + || kind === 164 /* SetAccessor */ + || kind === 167 /* IndexSignature */ + || kind === 222 /* SemicolonClassElement */; + } + ts.isClassElement = isClassElement; + function isClassLike(node) { + return node && (node.kind === 245 /* ClassDeclaration */ || node.kind === 214 /* ClassExpression */); + } + ts.isClassLike = isClassLike; + function isAccessor(node) { + return node && (node.kind === 163 /* GetAccessor */ || node.kind === 164 /* SetAccessor */); + } + ts.isAccessor = isAccessor; + /* @internal */ + function isMethodOrAccessor(node) { + switch (node.kind) { + case 161 /* MethodDeclaration */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + return true; + default: + return false; + } + } + ts.isMethodOrAccessor = isMethodOrAccessor; + // Type members + function isTypeElement(node) { + var kind = node.kind; + return kind === 166 /* ConstructSignature */ + || kind === 165 /* CallSignature */ + || kind === 158 /* PropertySignature */ + || kind === 160 /* MethodSignature */ + || kind === 167 /* IndexSignature */; + } + ts.isTypeElement = isTypeElement; + function isClassOrTypeElement(node) { + return isTypeElement(node) || isClassElement(node); + } + ts.isClassOrTypeElement = isClassOrTypeElement; + function isObjectLiteralElementLike(node) { + var kind = node.kind; + return kind === 281 /* PropertyAssignment */ + || kind === 282 /* ShorthandPropertyAssignment */ + || kind === 283 /* SpreadAssignment */ + || kind === 161 /* MethodDeclaration */ + || kind === 163 /* GetAccessor */ + || kind === 164 /* SetAccessor */; + } + ts.isObjectLiteralElementLike = isObjectLiteralElementLike; + // Type + /** + * Node test that determines whether a node is a valid type node. + * This differs from the `isPartOfTypeNode` function which determines whether a node is *part* + * of a TypeNode. + */ + function isTypeNode(node) { + return ts.isTypeNodeKind(node.kind); + } + ts.isTypeNode = isTypeNode; + function isFunctionOrConstructorTypeNode(node) { + switch (node.kind) { + case 170 /* FunctionType */: + case 171 /* ConstructorType */: + return true; + } + return false; + } + ts.isFunctionOrConstructorTypeNode = isFunctionOrConstructorTypeNode; + // Binding patterns + /* @internal */ + function isBindingPattern(node) { + if (node) { + var kind = node.kind; + return kind === 190 /* ArrayBindingPattern */ + || kind === 189 /* ObjectBindingPattern */; + } + return false; + } + ts.isBindingPattern = isBindingPattern; + /* @internal */ + function isAssignmentPattern(node) { + var kind = node.kind; + return kind === 192 /* ArrayLiteralExpression */ + || kind === 193 /* ObjectLiteralExpression */; + } + ts.isAssignmentPattern = isAssignmentPattern; + /* @internal */ + function isArrayBindingElement(node) { + var kind = node.kind; + return kind === 191 /* BindingElement */ + || kind === 215 /* OmittedExpression */; + } + ts.isArrayBindingElement = isArrayBindingElement; + /** + * Determines whether the BindingOrAssignmentElement is a BindingElement-like declaration + */ + /* @internal */ + function isDeclarationBindingElement(bindingElement) { + switch (bindingElement.kind) { + case 242 /* VariableDeclaration */: + case 156 /* Parameter */: + case 191 /* BindingElement */: + return true; + } + return false; + } + ts.isDeclarationBindingElement = isDeclarationBindingElement; + /** + * Determines whether a node is a BindingOrAssignmentPattern + */ + /* @internal */ + function isBindingOrAssignmentPattern(node) { + return isObjectBindingOrAssignmentPattern(node) + || isArrayBindingOrAssignmentPattern(node); + } + ts.isBindingOrAssignmentPattern = isBindingOrAssignmentPattern; + /** + * Determines whether a node is an ObjectBindingOrAssignmentPattern + */ + /* @internal */ + function isObjectBindingOrAssignmentPattern(node) { + switch (node.kind) { + case 189 /* ObjectBindingPattern */: + case 193 /* ObjectLiteralExpression */: + return true; + } + return false; + } + ts.isObjectBindingOrAssignmentPattern = isObjectBindingOrAssignmentPattern; + /** + * Determines whether a node is an ArrayBindingOrAssignmentPattern + */ + /* @internal */ + function isArrayBindingOrAssignmentPattern(node) { + switch (node.kind) { + case 190 /* ArrayBindingPattern */: + case 192 /* ArrayLiteralExpression */: + return true; + } + return false; + } + ts.isArrayBindingOrAssignmentPattern = isArrayBindingOrAssignmentPattern; + /* @internal */ + function isPropertyAccessOrQualifiedNameOrImportTypeNode(node) { + var kind = node.kind; + return kind === 194 /* PropertyAccessExpression */ + || kind === 153 /* QualifiedName */ + || kind === 188 /* ImportType */; + } + ts.isPropertyAccessOrQualifiedNameOrImportTypeNode = isPropertyAccessOrQualifiedNameOrImportTypeNode; + // Expression + function isPropertyAccessOrQualifiedName(node) { + var kind = node.kind; + return kind === 194 /* PropertyAccessExpression */ + || kind === 153 /* QualifiedName */; + } + ts.isPropertyAccessOrQualifiedName = isPropertyAccessOrQualifiedName; + function isCallLikeExpression(node) { + switch (node.kind) { + case 268 /* JsxOpeningElement */: + case 267 /* JsxSelfClosingElement */: + case 196 /* CallExpression */: + case 197 /* NewExpression */: + case 198 /* TaggedTemplateExpression */: + case 157 /* Decorator */: + return true; + default: + return false; + } + } + ts.isCallLikeExpression = isCallLikeExpression; + function isCallOrNewExpression(node) { + return node.kind === 196 /* CallExpression */ || node.kind === 197 /* NewExpression */; + } + ts.isCallOrNewExpression = isCallOrNewExpression; + function isTemplateLiteral(node) { + var kind = node.kind; + return kind === 211 /* TemplateExpression */ + || kind === 14 /* NoSubstitutionTemplateLiteral */; + } + ts.isTemplateLiteral = isTemplateLiteral; + /* @internal */ + function isLeftHandSideExpression(node) { + return isLeftHandSideExpressionKind(skipPartiallyEmittedExpressions(node).kind); + } + ts.isLeftHandSideExpression = isLeftHandSideExpression; + function isLeftHandSideExpressionKind(kind) { + switch (kind) { + case 194 /* PropertyAccessExpression */: + case 195 /* ElementAccessExpression */: + case 197 /* NewExpression */: + case 196 /* CallExpression */: + case 266 /* JsxElement */: + case 267 /* JsxSelfClosingElement */: + case 270 /* JsxFragment */: + case 198 /* TaggedTemplateExpression */: + case 192 /* ArrayLiteralExpression */: + case 200 /* ParenthesizedExpression */: + case 193 /* ObjectLiteralExpression */: + case 214 /* ClassExpression */: + case 201 /* FunctionExpression */: + case 75 /* Identifier */: + case 13 /* RegularExpressionLiteral */: + case 8 /* NumericLiteral */: + case 9 /* BigIntLiteral */: + case 10 /* StringLiteral */: + case 14 /* NoSubstitutionTemplateLiteral */: + case 211 /* TemplateExpression */: + case 91 /* FalseKeyword */: + case 100 /* NullKeyword */: + case 104 /* ThisKeyword */: + case 106 /* TrueKeyword */: + case 102 /* SuperKeyword */: + case 218 /* NonNullExpression */: + case 219 /* MetaProperty */: + case 96 /* ImportKeyword */: // technically this is only an Expression if it's in a CallExpression + return true; + default: + return false; + } + } + /* @internal */ + function isUnaryExpression(node) { + return isUnaryExpressionKind(skipPartiallyEmittedExpressions(node).kind); + } + ts.isUnaryExpression = isUnaryExpression; + function isUnaryExpressionKind(kind) { + switch (kind) { + case 207 /* PrefixUnaryExpression */: + case 208 /* PostfixUnaryExpression */: + case 203 /* DeleteExpression */: + case 204 /* TypeOfExpression */: + case 205 /* VoidExpression */: + case 206 /* AwaitExpression */: + case 199 /* TypeAssertionExpression */: + return true; + default: + return isLeftHandSideExpressionKind(kind); + } + } + /* @internal */ + function isUnaryExpressionWithWrite(expr) { + switch (expr.kind) { + case 208 /* PostfixUnaryExpression */: + return true; + case 207 /* PrefixUnaryExpression */: + return expr.operator === 45 /* PlusPlusToken */ || + expr.operator === 46 /* MinusMinusToken */; + default: + return false; + } + } + ts.isUnaryExpressionWithWrite = isUnaryExpressionWithWrite; + /* @internal */ + /** + * Determines whether a node is an expression based only on its kind. + * Use `isExpressionNode` if not in transforms. + */ + function isExpression(node) { + return isExpressionKind(skipPartiallyEmittedExpressions(node).kind); + } + ts.isExpression = isExpression; + function isExpressionKind(kind) { + switch (kind) { + case 210 /* ConditionalExpression */: + case 212 /* YieldExpression */: + case 202 /* ArrowFunction */: + case 209 /* BinaryExpression */: + case 213 /* SpreadElement */: + case 217 /* AsExpression */: + case 215 /* OmittedExpression */: + case 327 /* CommaListExpression */: + case 326 /* PartiallyEmittedExpression */: + return true; + default: + return isUnaryExpressionKind(kind); + } + } + function isAssertionExpression(node) { + var kind = node.kind; + return kind === 199 /* TypeAssertionExpression */ + || kind === 217 /* AsExpression */; + } + ts.isAssertionExpression = isAssertionExpression; + /* @internal */ + function isPartiallyEmittedExpression(node) { + return node.kind === 326 /* PartiallyEmittedExpression */; + } + ts.isPartiallyEmittedExpression = isPartiallyEmittedExpression; + /* @internal */ + function isNotEmittedStatement(node) { + return node.kind === 325 /* NotEmittedStatement */; + } + ts.isNotEmittedStatement = isNotEmittedStatement; + /* @internal */ + function isSyntheticReference(node) { + return node.kind === 330 /* SyntheticReferenceExpression */; + } + ts.isSyntheticReference = isSyntheticReference; + /* @internal */ + function isNotEmittedOrPartiallyEmittedNode(node) { + return isNotEmittedStatement(node) + || isPartiallyEmittedExpression(node); + } + ts.isNotEmittedOrPartiallyEmittedNode = isNotEmittedOrPartiallyEmittedNode; + function isIterationStatement(node, lookInLabeledStatements) { + switch (node.kind) { + case 230 /* ForStatement */: + case 231 /* ForInStatement */: + case 232 /* ForOfStatement */: + case 228 /* DoStatement */: + case 229 /* WhileStatement */: + return true; + case 238 /* LabeledStatement */: + return lookInLabeledStatements && isIterationStatement(node.statement, lookInLabeledStatements); + } + return false; + } + ts.isIterationStatement = isIterationStatement; + /* @internal */ + function isScopeMarker(node) { + return isExportAssignment(node) || isExportDeclaration(node); + } + ts.isScopeMarker = isScopeMarker; + /* @internal */ + function hasScopeMarker(statements) { + return ts.some(statements, isScopeMarker); + } + ts.hasScopeMarker = hasScopeMarker; + /* @internal */ + function needsScopeMarker(result) { + return !ts.isAnyImportOrReExport(result) && !isExportAssignment(result) && !ts.hasModifier(result, 1 /* Export */) && !ts.isAmbientModule(result); + } + ts.needsScopeMarker = needsScopeMarker; + /* @internal */ + function isExternalModuleIndicator(result) { + // Exported top-level member indicates moduleness + return ts.isAnyImportOrReExport(result) || isExportAssignment(result) || ts.hasModifier(result, 1 /* Export */); + } + ts.isExternalModuleIndicator = isExternalModuleIndicator; + /* @internal */ + function isForInOrOfStatement(node) { + return node.kind === 231 /* ForInStatement */ || node.kind === 232 /* ForOfStatement */; + } + ts.isForInOrOfStatement = isForInOrOfStatement; + // Element + /* @internal */ + function isConciseBody(node) { + return isBlock(node) + || isExpression(node); + } + ts.isConciseBody = isConciseBody; + /* @internal */ + function isFunctionBody(node) { + return isBlock(node); + } + ts.isFunctionBody = isFunctionBody; + /* @internal */ + function isForInitializer(node) { + return isVariableDeclarationList(node) + || isExpression(node); + } + ts.isForInitializer = isForInitializer; + /* @internal */ + function isModuleBody(node) { + var kind = node.kind; + return kind === 250 /* ModuleBlock */ + || kind === 249 /* ModuleDeclaration */ + || kind === 75 /* Identifier */; + } + ts.isModuleBody = isModuleBody; + /* @internal */ + function isNamespaceBody(node) { + var kind = node.kind; + return kind === 250 /* ModuleBlock */ + || kind === 249 /* ModuleDeclaration */; + } + ts.isNamespaceBody = isNamespaceBody; + /* @internal */ + function isJSDocNamespaceBody(node) { + var kind = node.kind; + return kind === 75 /* Identifier */ + || kind === 249 /* ModuleDeclaration */; + } + ts.isJSDocNamespaceBody = isJSDocNamespaceBody; + /* @internal */ + function isNamedImportBindings(node) { + var kind = node.kind; + return kind === 257 /* NamedImports */ + || kind === 256 /* NamespaceImport */; + } + ts.isNamedImportBindings = isNamedImportBindings; + /* @internal */ + function isModuleOrEnumDeclaration(node) { + return node.kind === 249 /* ModuleDeclaration */ || node.kind === 248 /* EnumDeclaration */; + } + ts.isModuleOrEnumDeclaration = isModuleOrEnumDeclaration; + function isDeclarationKind(kind) { + return kind === 202 /* ArrowFunction */ + || kind === 191 /* BindingElement */ + || kind === 245 /* ClassDeclaration */ + || kind === 214 /* ClassExpression */ + || kind === 162 /* Constructor */ + || kind === 248 /* EnumDeclaration */ + || kind === 284 /* EnumMember */ + || kind === 263 /* ExportSpecifier */ + || kind === 244 /* FunctionDeclaration */ + || kind === 201 /* FunctionExpression */ + || kind === 163 /* GetAccessor */ + || kind === 255 /* ImportClause */ + || kind === 253 /* ImportEqualsDeclaration */ + || kind === 258 /* ImportSpecifier */ + || kind === 246 /* InterfaceDeclaration */ + || kind === 273 /* JsxAttribute */ + || kind === 161 /* MethodDeclaration */ + || kind === 160 /* MethodSignature */ + || kind === 249 /* ModuleDeclaration */ + || kind === 252 /* NamespaceExportDeclaration */ + || kind === 256 /* NamespaceImport */ + || kind === 262 /* NamespaceExport */ + || kind === 156 /* Parameter */ + || kind === 281 /* PropertyAssignment */ + || kind === 159 /* PropertyDeclaration */ + || kind === 158 /* PropertySignature */ + || kind === 164 /* SetAccessor */ + || kind === 282 /* ShorthandPropertyAssignment */ + || kind === 247 /* TypeAliasDeclaration */ + || kind === 155 /* TypeParameter */ + || kind === 242 /* VariableDeclaration */ + || kind === 322 /* JSDocTypedefTag */ + || kind === 315 /* JSDocCallbackTag */ + || kind === 323 /* JSDocPropertyTag */; + } + function isDeclarationStatementKind(kind) { + return kind === 244 /* FunctionDeclaration */ + || kind === 264 /* MissingDeclaration */ + || kind === 245 /* ClassDeclaration */ + || kind === 246 /* InterfaceDeclaration */ + || kind === 247 /* TypeAliasDeclaration */ + || kind === 248 /* EnumDeclaration */ + || kind === 249 /* ModuleDeclaration */ + || kind === 254 /* ImportDeclaration */ + || kind === 253 /* ImportEqualsDeclaration */ + || kind === 260 /* ExportDeclaration */ + || kind === 259 /* ExportAssignment */ + || kind === 252 /* NamespaceExportDeclaration */; + } + function isStatementKindButNotDeclarationKind(kind) { + return kind === 234 /* BreakStatement */ + || kind === 233 /* ContinueStatement */ + || kind === 241 /* DebuggerStatement */ + || kind === 228 /* DoStatement */ + || kind === 226 /* ExpressionStatement */ + || kind === 224 /* EmptyStatement */ + || kind === 231 /* ForInStatement */ + || kind === 232 /* ForOfStatement */ + || kind === 230 /* ForStatement */ + || kind === 227 /* IfStatement */ + || kind === 238 /* LabeledStatement */ + || kind === 235 /* ReturnStatement */ + || kind === 237 /* SwitchStatement */ + || kind === 239 /* ThrowStatement */ + || kind === 240 /* TryStatement */ + || kind === 225 /* VariableStatement */ + || kind === 229 /* WhileStatement */ + || kind === 236 /* WithStatement */ + || kind === 325 /* NotEmittedStatement */ + || kind === 329 /* EndOfDeclarationMarker */ + || kind === 328 /* MergeDeclarationMarker */; + } + /* @internal */ + function isDeclaration(node) { + if (node.kind === 155 /* TypeParameter */) { + return (node.parent && node.parent.kind !== 321 /* JSDocTemplateTag */) || ts.isInJSFile(node); + } + return isDeclarationKind(node.kind); + } + ts.isDeclaration = isDeclaration; + /* @internal */ + function isDeclarationStatement(node) { + return isDeclarationStatementKind(node.kind); + } + ts.isDeclarationStatement = isDeclarationStatement; + /** + * Determines whether the node is a statement that is not also a declaration + */ + /* @internal */ + function isStatementButNotDeclaration(node) { + return isStatementKindButNotDeclarationKind(node.kind); + } + ts.isStatementButNotDeclaration = isStatementButNotDeclaration; + /* @internal */ + function isStatement(node) { + var kind = node.kind; + return isStatementKindButNotDeclarationKind(kind) + || isDeclarationStatementKind(kind) + || isBlockStatement(node); + } + ts.isStatement = isStatement; + function isBlockStatement(node) { + if (node.kind !== 223 /* Block */) + return false; + if (node.parent !== undefined) { + if (node.parent.kind === 240 /* TryStatement */ || node.parent.kind === 280 /* CatchClause */) { + return false; + } + } + return !ts.isFunctionBlock(node); + } + // Module references + /* @internal */ + function isModuleReference(node) { + var kind = node.kind; + return kind === 265 /* ExternalModuleReference */ + || kind === 153 /* QualifiedName */ + || kind === 75 /* Identifier */; + } + ts.isModuleReference = isModuleReference; + // JSX + /* @internal */ + function isJsxTagNameExpression(node) { + var kind = node.kind; + return kind === 104 /* ThisKeyword */ + || kind === 75 /* Identifier */ + || kind === 194 /* PropertyAccessExpression */; + } + ts.isJsxTagNameExpression = isJsxTagNameExpression; + /* @internal */ + function isJsxChild(node) { + var kind = node.kind; + return kind === 266 /* JsxElement */ + || kind === 276 /* JsxExpression */ + || kind === 267 /* JsxSelfClosingElement */ + || kind === 11 /* JsxText */ + || kind === 270 /* JsxFragment */; + } + ts.isJsxChild = isJsxChild; + /* @internal */ + function isJsxAttributeLike(node) { + var kind = node.kind; + return kind === 273 /* JsxAttribute */ + || kind === 275 /* JsxSpreadAttribute */; + } + ts.isJsxAttributeLike = isJsxAttributeLike; + /* @internal */ + function isStringLiteralOrJsxExpression(node) { + var kind = node.kind; + return kind === 10 /* StringLiteral */ + || kind === 276 /* JsxExpression */; + } + ts.isStringLiteralOrJsxExpression = isStringLiteralOrJsxExpression; + function isJsxOpeningLikeElement(node) { + var kind = node.kind; + return kind === 268 /* JsxOpeningElement */ + || kind === 267 /* JsxSelfClosingElement */; + } + ts.isJsxOpeningLikeElement = isJsxOpeningLikeElement; + // Clauses + function isCaseOrDefaultClause(node) { + var kind = node.kind; + return kind === 277 /* CaseClause */ + || kind === 278 /* DefaultClause */; + } + ts.isCaseOrDefaultClause = isCaseOrDefaultClause; + // JSDoc + /** True if node is of some JSDoc syntax kind. */ + /* @internal */ + function isJSDocNode(node) { + return node.kind >= 294 /* FirstJSDocNode */ && node.kind <= 323 /* LastJSDocNode */; + } + ts.isJSDocNode = isJSDocNode; + /** True if node is of a kind that may contain comment text. */ + function isJSDocCommentContainingNode(node) { + return node.kind === 303 /* JSDocComment */ || node.kind === 302 /* JSDocNamepathType */ || isJSDocTag(node) || isJSDocTypeLiteral(node) || isJSDocSignature(node); + } + ts.isJSDocCommentContainingNode = isJSDocCommentContainingNode; + // TODO: determine what this does before making it public. + /* @internal */ + function isJSDocTag(node) { + return node.kind >= 306 /* FirstJSDocTagNode */ && node.kind <= 323 /* LastJSDocTagNode */; + } + ts.isJSDocTag = isJSDocTag; + function isSetAccessor(node) { + return node.kind === 164 /* SetAccessor */; + } + ts.isSetAccessor = isSetAccessor; + function isGetAccessor(node) { + return node.kind === 163 /* GetAccessor */; + } + ts.isGetAccessor = isGetAccessor; + /** True if has jsdoc nodes attached to it. */ + /* @internal */ + // TODO: GH#19856 Would like to return `node is Node & { jsDoc: JSDoc[] }` but it causes long compile times + function hasJSDocNodes(node) { + var jsDoc = node.jsDoc; + return !!jsDoc && jsDoc.length > 0; + } + ts.hasJSDocNodes = hasJSDocNodes; + /** True if has type node attached to it. */ + /* @internal */ + function hasType(node) { + return !!node.type; + } + ts.hasType = hasType; + /** True if has initializer node attached to it. */ + /* @internal */ + function hasInitializer(node) { + return !!node.initializer; + } + ts.hasInitializer = hasInitializer; + /** True if has initializer node attached to it. */ + function hasOnlyExpressionInitializer(node) { + switch (node.kind) { + case 242 /* VariableDeclaration */: + case 156 /* Parameter */: + case 191 /* BindingElement */: + case 158 /* PropertySignature */: + case 159 /* PropertyDeclaration */: + case 281 /* PropertyAssignment */: + case 284 /* EnumMember */: + return true; + default: + return false; + } + } + ts.hasOnlyExpressionInitializer = hasOnlyExpressionInitializer; + function isObjectLiteralElement(node) { + return node.kind === 273 /* JsxAttribute */ || node.kind === 275 /* JsxSpreadAttribute */ || isObjectLiteralElementLike(node); + } + ts.isObjectLiteralElement = isObjectLiteralElement; + /* @internal */ + function isTypeReferenceType(node) { + return node.kind === 169 /* TypeReference */ || node.kind === 216 /* ExpressionWithTypeArguments */; + } + ts.isTypeReferenceType = isTypeReferenceType; + var MAX_SMI_X86 = 1073741823; + /* @internal */ + function guessIndentation(lines) { + var indentation = MAX_SMI_X86; + for (var _i = 0, lines_1 = lines; _i < lines_1.length; _i++) { + var line = lines_1[_i]; + if (!line.length) { + continue; + } + var i = 0; + for (; i < line.length && i < indentation; i++) { + if (!ts.isWhiteSpaceLike(line.charCodeAt(i))) { + break; + } + } + if (i < indentation) { + indentation = i; + } + if (indentation === 0) { + return 0; + } + } + return indentation === MAX_SMI_X86 ? undefined : indentation; + } + ts.guessIndentation = guessIndentation; + function isStringLiteralLike(node) { + return node.kind === 10 /* StringLiteral */ || node.kind === 14 /* NoSubstitutionTemplateLiteral */; + } + ts.isStringLiteralLike = isStringLiteralLike; + // #endregion +})(ts || (ts = {})); +/* @internal */ +var ts; +(function (ts) { + ts.resolvingEmptyArray = []; + ts.emptyMap = ts.createMap(); + ts.emptyUnderscoreEscapedMap = ts.emptyMap; + ts.externalHelpersModuleNameText = "tslib"; + ts.defaultMaximumTruncationLength = 160; + ts.noTruncationMaximumTruncationLength = 1000000; + function getDeclarationOfKind(symbol, kind) { + var declarations = symbol.declarations; + if (declarations) { + for (var _i = 0, declarations_1 = declarations; _i < declarations_1.length; _i++) { + var declaration = declarations_1[_i]; + if (declaration.kind === kind) { + return declaration; + } + } + } + return undefined; + } + ts.getDeclarationOfKind = getDeclarationOfKind; + /** Create a new escaped identifier map. */ + function createUnderscoreEscapedMap() { + return new ts.Map(); + } + ts.createUnderscoreEscapedMap = createUnderscoreEscapedMap; + function hasEntries(map) { + return !!map && !!map.size; + } + ts.hasEntries = hasEntries; + function createSymbolTable(symbols) { + var result = ts.createMap(); + if (symbols) { + for (var _i = 0, symbols_1 = symbols; _i < symbols_1.length; _i++) { + var symbol = symbols_1[_i]; + result.set(symbol.escapedName, symbol); + } + } + return result; + } + ts.createSymbolTable = createSymbolTable; + function isTransientSymbol(symbol) { + return (symbol.flags & 33554432 /* Transient */) !== 0; + } + ts.isTransientSymbol = isTransientSymbol; + var stringWriter = createSingleLineStringWriter(); + function createSingleLineStringWriter() { + var str = ""; + var writeText = function (text) { return str += text; }; + return { + getText: function () { return str; }, + write: writeText, + rawWrite: writeText, + writeKeyword: writeText, + writeOperator: writeText, + writePunctuation: writeText, + writeSpace: writeText, + writeStringLiteral: writeText, + writeLiteral: writeText, + writeParameter: writeText, + writeProperty: writeText, + writeSymbol: function (s, _) { return writeText(s); }, + writeTrailingSemicolon: writeText, + writeComment: writeText, + getTextPos: function () { return str.length; }, + getLine: function () { return 0; }, + getColumn: function () { return 0; }, + getIndent: function () { return 0; }, + isAtStartOfLine: function () { return false; }, + hasTrailingComment: function () { return false; }, + hasTrailingWhitespace: function () { return !!str.length && ts.isWhiteSpaceLike(str.charCodeAt(str.length - 1)); }, + // Completely ignore indentation for string writers. And map newlines to + // a single space. + writeLine: function () { return str += " "; }, + increaseIndent: ts.noop, + decreaseIndent: ts.noop, + clear: function () { return str = ""; }, + trackSymbol: ts.noop, + reportInaccessibleThisError: ts.noop, + reportInaccessibleUniqueSymbolError: ts.noop, + reportPrivateInBaseOfClassExpression: ts.noop, + }; + } + function changesAffectModuleResolution(oldOptions, newOptions) { + return oldOptions.configFilePath !== newOptions.configFilePath || + optionsHaveModuleResolutionChanges(oldOptions, newOptions); + } + ts.changesAffectModuleResolution = changesAffectModuleResolution; + function optionsHaveModuleResolutionChanges(oldOptions, newOptions) { + return ts.moduleResolutionOptionDeclarations.some(function (o) { + return !isJsonEqual(getCompilerOptionValue(oldOptions, o), getCompilerOptionValue(newOptions, o)); + }); + } + ts.optionsHaveModuleResolutionChanges = optionsHaveModuleResolutionChanges; + function findAncestor(node, callback) { + while (node) { + var result = callback(node); + if (result === "quit") { + return undefined; + } + else if (result) { + return node; + } + node = node.parent; + } + return undefined; + } + ts.findAncestor = findAncestor; + function forEachAncestor(node, callback) { + while (true) { + var res = callback(node); + if (res === "quit") + return undefined; + if (res !== undefined) + return res; + if (ts.isSourceFile(node)) + return undefined; + node = node.parent; + } + } + ts.forEachAncestor = forEachAncestor; + function forEachEntry(map, callback) { + var iterator = map.entries(); + for (var iterResult = iterator.next(); !iterResult.done; iterResult = iterator.next()) { + var _a = iterResult.value, key = _a[0], value = _a[1]; + var result = callback(value, key); + if (result) { + return result; + } + } + return undefined; + } + ts.forEachEntry = forEachEntry; + function forEachKey(map, callback) { + var iterator = map.keys(); + for (var iterResult = iterator.next(); !iterResult.done; iterResult = iterator.next()) { + var result = callback(iterResult.value); + if (result) { + return result; + } + } + return undefined; + } + ts.forEachKey = forEachKey; + function copyEntries(source, target) { + source.forEach(function (value, key) { + target.set(key, value); + }); + } + ts.copyEntries = copyEntries; + function arrayToSet(array, makeKey) { + return ts.arrayToMap(array, makeKey || (function (s) { return s; }), ts.returnTrue); + } + ts.arrayToSet = arrayToSet; + function cloneMap(map) { + var clone = ts.createMap(); + copyEntries(map, clone); + return clone; + } + ts.cloneMap = cloneMap; + function usingSingleLineStringWriter(action) { + var oldString = stringWriter.getText(); + try { + action(stringWriter); + return stringWriter.getText(); + } + finally { + stringWriter.clear(); + stringWriter.writeKeyword(oldString); + } + } + ts.usingSingleLineStringWriter = usingSingleLineStringWriter; + function getFullWidth(node) { + return node.end - node.pos; + } + ts.getFullWidth = getFullWidth; + function getResolvedModule(sourceFile, moduleNameText) { + return sourceFile && sourceFile.resolvedModules && sourceFile.resolvedModules.get(moduleNameText); + } + ts.getResolvedModule = getResolvedModule; + function setResolvedModule(sourceFile, moduleNameText, resolvedModule) { + if (!sourceFile.resolvedModules) { + sourceFile.resolvedModules = ts.createMap(); + } + sourceFile.resolvedModules.set(moduleNameText, resolvedModule); + } + ts.setResolvedModule = setResolvedModule; + function setResolvedTypeReferenceDirective(sourceFile, typeReferenceDirectiveName, resolvedTypeReferenceDirective) { + if (!sourceFile.resolvedTypeReferenceDirectiveNames) { + sourceFile.resolvedTypeReferenceDirectiveNames = ts.createMap(); + } + sourceFile.resolvedTypeReferenceDirectiveNames.set(typeReferenceDirectiveName, resolvedTypeReferenceDirective); + } + ts.setResolvedTypeReferenceDirective = setResolvedTypeReferenceDirective; + function projectReferenceIsEqualTo(oldRef, newRef) { + return oldRef.path === newRef.path && + !oldRef.prepend === !newRef.prepend && + !oldRef.circular === !newRef.circular; + } + ts.projectReferenceIsEqualTo = projectReferenceIsEqualTo; + function moduleResolutionIsEqualTo(oldResolution, newResolution) { + return oldResolution.isExternalLibraryImport === newResolution.isExternalLibraryImport && + oldResolution.extension === newResolution.extension && + oldResolution.resolvedFileName === newResolution.resolvedFileName && + oldResolution.originalPath === newResolution.originalPath && + packageIdIsEqual(oldResolution.packageId, newResolution.packageId); + } + ts.moduleResolutionIsEqualTo = moduleResolutionIsEqualTo; + function packageIdIsEqual(a, b) { + return a === b || !!a && !!b && a.name === b.name && a.subModuleName === b.subModuleName && a.version === b.version; + } + function packageIdToString(_a) { + var name = _a.name, subModuleName = _a.subModuleName, version = _a.version; + var fullName = subModuleName ? name + "/" + subModuleName : name; + return fullName + "@" + version; + } + ts.packageIdToString = packageIdToString; + function typeDirectiveIsEqualTo(oldResolution, newResolution) { + return oldResolution.resolvedFileName === newResolution.resolvedFileName && oldResolution.primary === newResolution.primary; + } + ts.typeDirectiveIsEqualTo = typeDirectiveIsEqualTo; + function hasChangesInResolutions(names, newResolutions, oldResolutions, comparer) { + ts.Debug.assert(names.length === newResolutions.length); + for (var i = 0; i < names.length; i++) { + var newResolution = newResolutions[i]; + var oldResolution = oldResolutions && oldResolutions.get(names[i]); + var changed = oldResolution + ? !newResolution || !comparer(oldResolution, newResolution) + : newResolution; + if (changed) { + return true; + } + } + return false; + } + ts.hasChangesInResolutions = hasChangesInResolutions; + // Returns true if this node contains a parse error anywhere underneath it. + function containsParseError(node) { + aggregateChildData(node); + return (node.flags & 262144 /* ThisNodeOrAnySubNodesHasError */) !== 0; + } + ts.containsParseError = containsParseError; + function aggregateChildData(node) { + if (!(node.flags & 524288 /* HasAggregatedChildData */)) { + // A node is considered to contain a parse error if: + // a) the parser explicitly marked that it had an error + // b) any of it's children reported that it had an error. + var thisNodeOrAnySubNodesHasError = ((node.flags & 65536 /* ThisNodeHasError */) !== 0) || + ts.forEachChild(node, containsParseError); + // If so, mark ourselves accordingly. + if (thisNodeOrAnySubNodesHasError) { + node.flags |= 262144 /* ThisNodeOrAnySubNodesHasError */; + } + // Also mark that we've propagated the child information to this node. This way we can + // always consult the bit directly on this node without needing to check its children + // again. + node.flags |= 524288 /* HasAggregatedChildData */; + } + } + function getSourceFileOfNode(node) { + while (node && node.kind !== 290 /* SourceFile */) { + node = node.parent; + } + return node; + } + ts.getSourceFileOfNode = getSourceFileOfNode; + function isStatementWithLocals(node) { + switch (node.kind) { + case 223 /* Block */: + case 251 /* CaseBlock */: + case 230 /* ForStatement */: + case 231 /* ForInStatement */: + case 232 /* ForOfStatement */: + return true; + } + return false; + } + ts.isStatementWithLocals = isStatementWithLocals; + function getStartPositionOfLine(line, sourceFile) { + ts.Debug.assert(line >= 0); + return ts.getLineStarts(sourceFile)[line]; + } + ts.getStartPositionOfLine = getStartPositionOfLine; + // This is a useful function for debugging purposes. + function nodePosToString(node) { + var file = getSourceFileOfNode(node); + var loc = ts.getLineAndCharacterOfPosition(file, node.pos); + return file.fileName + "(" + (loc.line + 1) + "," + (loc.character + 1) + ")"; + } + ts.nodePosToString = nodePosToString; + function getEndLinePosition(line, sourceFile) { + ts.Debug.assert(line >= 0); + var lineStarts = ts.getLineStarts(sourceFile); + var lineIndex = line; + var sourceText = sourceFile.text; + if (lineIndex + 1 === lineStarts.length) { + // last line - return EOF + return sourceText.length - 1; + } + else { + // current line start + var start = lineStarts[lineIndex]; + // take the start position of the next line - 1 = it should be some line break + var pos = lineStarts[lineIndex + 1] - 1; + ts.Debug.assert(ts.isLineBreak(sourceText.charCodeAt(pos))); + // walk backwards skipping line breaks, stop the the beginning of current line. + // i.e: + // + // $ <- end of line for this position should match the start position + while (start <= pos && ts.isLineBreak(sourceText.charCodeAt(pos))) { + pos--; + } + return pos; + } + } + ts.getEndLinePosition = getEndLinePosition; + /** + * Returns a value indicating whether a name is unique globally or within the current file. + * Note: This does not consider whether a name appears as a free identifier or not, so at the expression `x.y` this includes both `x` and `y`. + */ + function isFileLevelUniqueName(sourceFile, name, hasGlobalName) { + return !(hasGlobalName && hasGlobalName(name)) && !sourceFile.identifiers.has(name); + } + ts.isFileLevelUniqueName = isFileLevelUniqueName; + // Returns true if this node is missing from the actual source code. A 'missing' node is different + // from 'undefined/defined'. When a node is undefined (which can happen for optional nodes + // in the tree), it is definitely missing. However, a node may be defined, but still be + // missing. This happens whenever the parser knows it needs to parse something, but can't + // get anything in the source code that it expects at that location. For example: + // + // let a: ; + // + // Here, the Type in the Type-Annotation is not-optional (as there is a colon in the source + // code). So the parser will attempt to parse out a type, and will create an actual node. + // However, this node will be 'missing' in the sense that no actual source-code/tokens are + // contained within it. + function nodeIsMissing(node) { + if (node === undefined) { + return true; + } + return node.pos === node.end && node.pos >= 0 && node.kind !== 1 /* EndOfFileToken */; + } + ts.nodeIsMissing = nodeIsMissing; + function nodeIsPresent(node) { + return !nodeIsMissing(node); + } + ts.nodeIsPresent = nodeIsPresent; + function insertStatementsAfterPrologue(to, from, isPrologueDirective) { + if (from === undefined || from.length === 0) + return to; + var statementIndex = 0; + // skip all prologue directives to insert at the correct position + for (; statementIndex < to.length; ++statementIndex) { + if (!isPrologueDirective(to[statementIndex])) { + break; + } + } + to.splice.apply(to, __spreadArrays([statementIndex, 0], from)); + return to; + } + function insertStatementAfterPrologue(to, statement, isPrologueDirective) { + if (statement === undefined) + return to; + var statementIndex = 0; + // skip all prologue directives to insert at the correct position + for (; statementIndex < to.length; ++statementIndex) { + if (!isPrologueDirective(to[statementIndex])) { + break; + } + } + to.splice(statementIndex, 0, statement); + return to; + } + function isAnyPrologueDirective(node) { + return isPrologueDirective(node) || !!(getEmitFlags(node) & 1048576 /* CustomPrologue */); + } + /** + * Prepends statements to an array while taking care of prologue directives. + */ + function insertStatementsAfterStandardPrologue(to, from) { + return insertStatementsAfterPrologue(to, from, isPrologueDirective); + } + ts.insertStatementsAfterStandardPrologue = insertStatementsAfterStandardPrologue; + function insertStatementsAfterCustomPrologue(to, from) { + return insertStatementsAfterPrologue(to, from, isAnyPrologueDirective); + } + ts.insertStatementsAfterCustomPrologue = insertStatementsAfterCustomPrologue; + /** + * Prepends statements to an array while taking care of prologue directives. + */ + function insertStatementAfterStandardPrologue(to, statement) { + return insertStatementAfterPrologue(to, statement, isPrologueDirective); + } + ts.insertStatementAfterStandardPrologue = insertStatementAfterStandardPrologue; + function insertStatementAfterCustomPrologue(to, statement) { + return insertStatementAfterPrologue(to, statement, isAnyPrologueDirective); + } + ts.insertStatementAfterCustomPrologue = insertStatementAfterCustomPrologue; + /** + * Determine if the given comment is a triple-slash + * + * @return true if the comment is a triple-slash comment else false + */ + function isRecognizedTripleSlashComment(text, commentPos, commentEnd) { + // Verify this is /// comment, but do the regexp match only when we first can find /// in the comment text + // so that we don't end up computing comment string and doing match for all // comments + if (text.charCodeAt(commentPos + 1) === 47 /* slash */ && + commentPos + 2 < commentEnd && + text.charCodeAt(commentPos + 2) === 47 /* slash */) { + var textSubStr = text.substring(commentPos, commentEnd); + return textSubStr.match(ts.fullTripleSlashReferencePathRegEx) || + textSubStr.match(ts.fullTripleSlashAMDReferencePathRegEx) || + textSubStr.match(fullTripleSlashReferenceTypeReferenceDirectiveRegEx) || + textSubStr.match(defaultLibReferenceRegEx) ? + true : false; + } + return false; + } + ts.isRecognizedTripleSlashComment = isRecognizedTripleSlashComment; + function isPinnedComment(text, start) { + return text.charCodeAt(start + 1) === 42 /* asterisk */ && + text.charCodeAt(start + 2) === 33 /* exclamation */; + } + ts.isPinnedComment = isPinnedComment; + function createCommentDirectivesMap(sourceFile, commentDirectives) { + var directivesByLine = ts.createMapFromEntries(commentDirectives.map(function (commentDirective) { return ([ + "" + ts.getLineAndCharacterOfPosition(sourceFile, commentDirective.range.end).line, + commentDirective, + ]); })); + var usedLines = ts.createMap(); + return { getUnusedExpectations: getUnusedExpectations, markUsed: markUsed }; + function getUnusedExpectations() { + return ts.arrayFrom(directivesByLine.entries()) + .filter(function (_a) { + var line = _a[0], directive = _a[1]; + return directive.type === 0 /* ExpectError */ && !usedLines.get(line); + }) + .map(function (_a) { + var _ = _a[0], directive = _a[1]; + return directive; + }); + } + function markUsed(line) { + if (!directivesByLine.has("" + line)) { + return false; + } + usedLines.set("" + line, true); + return true; + } + } + ts.createCommentDirectivesMap = createCommentDirectivesMap; + function getTokenPosOfNode(node, sourceFile, includeJsDoc) { + // With nodes that have no width (i.e. 'Missing' nodes), we actually *don't* + // want to skip trivia because this will launch us forward to the next token. + if (nodeIsMissing(node)) { + return node.pos; + } + if (ts.isJSDocNode(node)) { + return ts.skipTrivia((sourceFile || getSourceFileOfNode(node)).text, node.pos, /*stopAfterLineBreak*/ false, /*stopAtComments*/ true); + } + if (includeJsDoc && ts.hasJSDocNodes(node)) { + return getTokenPosOfNode(node.jsDoc[0], sourceFile); + } + // For a syntax list, it is possible that one of its children has JSDocComment nodes, while + // the syntax list itself considers them as normal trivia. Therefore if we simply skip + // trivia for the list, we may have skipped the JSDocComment as well. So we should process its + // first child to determine the actual position of its first token. + if (node.kind === 324 /* SyntaxList */ && node._children.length > 0) { + return getTokenPosOfNode(node._children[0], sourceFile, includeJsDoc); + } + return ts.skipTrivia((sourceFile || getSourceFileOfNode(node)).text, node.pos); + } + ts.getTokenPosOfNode = getTokenPosOfNode; + function getNonDecoratorTokenPosOfNode(node, sourceFile) { + if (nodeIsMissing(node) || !node.decorators) { + return getTokenPosOfNode(node, sourceFile); + } + return ts.skipTrivia((sourceFile || getSourceFileOfNode(node)).text, node.decorators.end); + } + ts.getNonDecoratorTokenPosOfNode = getNonDecoratorTokenPosOfNode; + function getSourceTextOfNodeFromSourceFile(sourceFile, node, includeTrivia) { + if (includeTrivia === void 0) { includeTrivia = false; } + return getTextOfNodeFromSourceText(sourceFile.text, node, includeTrivia); + } + ts.getSourceTextOfNodeFromSourceFile = getSourceTextOfNodeFromSourceFile; + function isJSDocTypeExpressionOrChild(node) { + return !!findAncestor(node, ts.isJSDocTypeExpression); + } + function getTextOfNodeFromSourceText(sourceText, node, includeTrivia) { + if (includeTrivia === void 0) { includeTrivia = false; } + if (nodeIsMissing(node)) { + return ""; + } + var text = sourceText.substring(includeTrivia ? node.pos : ts.skipTrivia(sourceText, node.pos), node.end); + if (isJSDocTypeExpressionOrChild(node)) { + // strip space + asterisk at line start + text = text.replace(/(^|\r?\n|\r)\s*\*\s*/g, "$1"); + } + return text; + } + ts.getTextOfNodeFromSourceText = getTextOfNodeFromSourceText; + function getTextOfNode(node, includeTrivia) { + if (includeTrivia === void 0) { includeTrivia = false; } + return getSourceTextOfNodeFromSourceFile(getSourceFileOfNode(node), node, includeTrivia); + } + ts.getTextOfNode = getTextOfNode; + function getPos(range) { + return range.pos; + } + /** + * Note: it is expected that the `nodeArray` and the `node` are within the same file. + * For example, searching for a `SourceFile` in a `SourceFile[]` wouldn't work. + */ + function indexOfNode(nodeArray, node) { + return ts.binarySearch(nodeArray, node, getPos, ts.compareValues); + } + ts.indexOfNode = indexOfNode; + /** + * Gets flags that control emit behavior of a node. + */ + function getEmitFlags(node) { + var emitNode = node.emitNode; + return emitNode && emitNode.flags || 0; + } + ts.getEmitFlags = getEmitFlags; + function getLiteralText(node, sourceFile, neverAsciiEscape, jsxAttributeEscape) { + // If we don't need to downlevel and we can reach the original source text using + // the node's parent reference, then simply get the text as it was originally written. + if (!nodeIsSynthesized(node) && node.parent && !((ts.isNumericLiteral(node) && node.numericLiteralFlags & 512 /* ContainsSeparator */) || + ts.isBigIntLiteral(node))) { + return getSourceTextOfNodeFromSourceFile(sourceFile, node); + } + // If we can't reach the original source text, use the canonical form if it's a number, + // or a (possibly escaped) quoted form of the original text if it's string-like. + switch (node.kind) { + case 10 /* StringLiteral */: { + var escapeText = jsxAttributeEscape ? escapeJsxAttributeString : + neverAsciiEscape || (getEmitFlags(node) & 16777216 /* NoAsciiEscaping */) ? escapeString : + escapeNonAsciiString; + if (node.singleQuote) { + return "'" + escapeText(node.text, 39 /* singleQuote */) + "'"; + } + else { + return '"' + escapeText(node.text, 34 /* doubleQuote */) + '"'; + } + } + case 14 /* NoSubstitutionTemplateLiteral */: + case 15 /* TemplateHead */: + case 16 /* TemplateMiddle */: + case 17 /* TemplateTail */: { + // If a NoSubstitutionTemplateLiteral appears to have a substitution in it, the original text + // had to include a backslash: `not \${a} substitution`. + var escapeText = neverAsciiEscape || (getEmitFlags(node) & 16777216 /* NoAsciiEscaping */) ? escapeString : + escapeNonAsciiString; + var rawText = node.rawText || escapeTemplateSubstitution(escapeText(node.text, 96 /* backtick */)); + switch (node.kind) { + case 14 /* NoSubstitutionTemplateLiteral */: + return "`" + rawText + "`"; + case 15 /* TemplateHead */: + return "`" + rawText + "${"; + case 16 /* TemplateMiddle */: + return "}" + rawText + "${"; + case 17 /* TemplateTail */: + return "}" + rawText + "`"; + } + break; + } + case 8 /* NumericLiteral */: + case 9 /* BigIntLiteral */: + case 13 /* RegularExpressionLiteral */: + return node.text; + } + return ts.Debug.fail("Literal kind '" + node.kind + "' not accounted for."); + } + ts.getLiteralText = getLiteralText; + function getTextOfConstantValue(value) { + return ts.isString(value) ? '"' + escapeNonAsciiString(value) + '"' : "" + value; + } + ts.getTextOfConstantValue = getTextOfConstantValue; + // Make an identifier from an external module name by extracting the string after the last "/" and replacing + // all non-alphanumeric characters with underscores + function makeIdentifierFromModuleName(moduleName) { + return ts.getBaseFileName(moduleName).replace(/^(\d)/, "_$1").replace(/\W/g, "_"); + } + ts.makeIdentifierFromModuleName = makeIdentifierFromModuleName; + function isBlockOrCatchScoped(declaration) { + return (ts.getCombinedNodeFlags(declaration) & 3 /* BlockScoped */) !== 0 || + isCatchClauseVariableDeclarationOrBindingElement(declaration); + } + ts.isBlockOrCatchScoped = isBlockOrCatchScoped; + function isCatchClauseVariableDeclarationOrBindingElement(declaration) { + var node = getRootDeclaration(declaration); + return node.kind === 242 /* VariableDeclaration */ && node.parent.kind === 280 /* CatchClause */; + } + ts.isCatchClauseVariableDeclarationOrBindingElement = isCatchClauseVariableDeclarationOrBindingElement; + function isAmbientModule(node) { + return ts.isModuleDeclaration(node) && (node.name.kind === 10 /* StringLiteral */ || isGlobalScopeAugmentation(node)); + } + ts.isAmbientModule = isAmbientModule; + function isModuleWithStringLiteralName(node) { + return ts.isModuleDeclaration(node) && node.name.kind === 10 /* StringLiteral */; + } + ts.isModuleWithStringLiteralName = isModuleWithStringLiteralName; + function isNonGlobalAmbientModule(node) { + return ts.isModuleDeclaration(node) && ts.isStringLiteral(node.name); + } + ts.isNonGlobalAmbientModule = isNonGlobalAmbientModule; + /** + * An effective module (namespace) declaration is either + * 1. An actual declaration: namespace X { ... } + * 2. A Javascript declaration, which is: + * An identifier in a nested property access expression: Y in `X.Y.Z = { ... }` + */ + function isEffectiveModuleDeclaration(node) { + return ts.isModuleDeclaration(node) || ts.isIdentifier(node); + } + ts.isEffectiveModuleDeclaration = isEffectiveModuleDeclaration; + /** Given a symbol for a module, checks that it is a shorthand ambient module. */ + function isShorthandAmbientModuleSymbol(moduleSymbol) { + return isShorthandAmbientModule(moduleSymbol.valueDeclaration); + } + ts.isShorthandAmbientModuleSymbol = isShorthandAmbientModuleSymbol; + function isShorthandAmbientModule(node) { + // The only kind of module that can be missing a body is a shorthand ambient module. + return node && node.kind === 249 /* ModuleDeclaration */ && (!node.body); + } + function isBlockScopedContainerTopLevel(node) { + return node.kind === 290 /* SourceFile */ || + node.kind === 249 /* ModuleDeclaration */ || + ts.isFunctionLike(node); + } + ts.isBlockScopedContainerTopLevel = isBlockScopedContainerTopLevel; + function isGlobalScopeAugmentation(module) { + return !!(module.flags & 1024 /* GlobalAugmentation */); + } + ts.isGlobalScopeAugmentation = isGlobalScopeAugmentation; + function isExternalModuleAugmentation(node) { + return isAmbientModule(node) && isModuleAugmentationExternal(node); + } + ts.isExternalModuleAugmentation = isExternalModuleAugmentation; + function isModuleAugmentationExternal(node) { + // external module augmentation is a ambient module declaration that is either: + // - defined in the top level scope and source file is an external module + // - defined inside ambient module declaration located in the top level scope and source file not an external module + switch (node.parent.kind) { + case 290 /* SourceFile */: + return ts.isExternalModule(node.parent); + case 250 /* ModuleBlock */: + return isAmbientModule(node.parent.parent) && ts.isSourceFile(node.parent.parent.parent) && !ts.isExternalModule(node.parent.parent.parent); + } + return false; + } + ts.isModuleAugmentationExternal = isModuleAugmentationExternal; + function getNonAugmentationDeclaration(symbol) { + return ts.find(symbol.declarations, function (d) { return !isExternalModuleAugmentation(d) && !(ts.isModuleDeclaration(d) && isGlobalScopeAugmentation(d)); }); + } + ts.getNonAugmentationDeclaration = getNonAugmentationDeclaration; + function isEffectiveExternalModule(node, compilerOptions) { + return ts.isExternalModule(node) || compilerOptions.isolatedModules || ((getEmitModuleKind(compilerOptions) === ts.ModuleKind.CommonJS) && !!node.commonJsModuleIndicator); + } + ts.isEffectiveExternalModule = isEffectiveExternalModule; + /** + * Returns whether the source file will be treated as if it were in strict mode at runtime. + */ + function isEffectiveStrictModeSourceFile(node, compilerOptions) { + // We can only verify strict mode for JS/TS files + switch (node.scriptKind) { + case 1 /* JS */: + case 3 /* TS */: + case 2 /* JSX */: + case 4 /* TSX */: + break; + default: + return false; + } + // Strict mode does not matter for declaration files. + if (node.isDeclarationFile) { + return false; + } + // If `alwaysStrict` is set, then treat the file as strict. + if (getStrictOptionValue(compilerOptions, "alwaysStrict")) { + return true; + } + // Starting with a "use strict" directive indicates the file is strict. + if (ts.startsWithUseStrict(node.statements)) { + return true; + } + if (ts.isExternalModule(node) || compilerOptions.isolatedModules) { + // ECMAScript Modules are always strict. + if (getEmitModuleKind(compilerOptions) >= ts.ModuleKind.ES2015) { + return true; + } + // Other modules are strict unless otherwise specified. + return !compilerOptions.noImplicitUseStrict; + } + return false; + } + ts.isEffectiveStrictModeSourceFile = isEffectiveStrictModeSourceFile; + function isBlockScope(node, parentNode) { + switch (node.kind) { + case 290 /* SourceFile */: + case 251 /* CaseBlock */: + case 280 /* CatchClause */: + case 249 /* ModuleDeclaration */: + case 230 /* ForStatement */: + case 231 /* ForInStatement */: + case 232 /* ForOfStatement */: + case 162 /* Constructor */: + case 161 /* MethodDeclaration */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + case 244 /* FunctionDeclaration */: + case 201 /* FunctionExpression */: + case 202 /* ArrowFunction */: + return true; + case 223 /* Block */: + // function block is not considered block-scope container + // see comment in binder.ts: bind(...), case for SyntaxKind.Block + return !ts.isFunctionLike(parentNode); + } + return false; + } + ts.isBlockScope = isBlockScope; + function isDeclarationWithTypeParameters(node) { + switch (node.kind) { + case 315 /* JSDocCallbackTag */: + case 322 /* JSDocTypedefTag */: + case 305 /* JSDocSignature */: + return true; + default: + ts.assertType(node); + return isDeclarationWithTypeParameterChildren(node); + } + } + ts.isDeclarationWithTypeParameters = isDeclarationWithTypeParameters; + function isDeclarationWithTypeParameterChildren(node) { + switch (node.kind) { + case 165 /* CallSignature */: + case 166 /* ConstructSignature */: + case 160 /* MethodSignature */: + case 167 /* IndexSignature */: + case 170 /* FunctionType */: + case 171 /* ConstructorType */: + case 300 /* JSDocFunctionType */: + case 245 /* ClassDeclaration */: + case 214 /* ClassExpression */: + case 246 /* InterfaceDeclaration */: + case 247 /* TypeAliasDeclaration */: + case 321 /* JSDocTemplateTag */: + case 244 /* FunctionDeclaration */: + case 161 /* MethodDeclaration */: + case 162 /* Constructor */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + case 201 /* FunctionExpression */: + case 202 /* ArrowFunction */: + return true; + default: + ts.assertType(node); + return false; + } + } + ts.isDeclarationWithTypeParameterChildren = isDeclarationWithTypeParameterChildren; + function isAnyImportSyntax(node) { + switch (node.kind) { + case 254 /* ImportDeclaration */: + case 253 /* ImportEqualsDeclaration */: + return true; + default: + return false; + } + } + ts.isAnyImportSyntax = isAnyImportSyntax; + function isLateVisibilityPaintedStatement(node) { + switch (node.kind) { + case 254 /* ImportDeclaration */: + case 253 /* ImportEqualsDeclaration */: + case 225 /* VariableStatement */: + case 245 /* ClassDeclaration */: + case 244 /* FunctionDeclaration */: + case 249 /* ModuleDeclaration */: + case 247 /* TypeAliasDeclaration */: + case 246 /* InterfaceDeclaration */: + case 248 /* EnumDeclaration */: + return true; + default: + return false; + } + } + ts.isLateVisibilityPaintedStatement = isLateVisibilityPaintedStatement; + function isAnyImportOrReExport(node) { + return isAnyImportSyntax(node) || ts.isExportDeclaration(node); + } + ts.isAnyImportOrReExport = isAnyImportOrReExport; + // Gets the nearest enclosing block scope container that has the provided node + // as a descendant, that is not the provided node. + function getEnclosingBlockScopeContainer(node) { + return findAncestor(node.parent, function (current) { return isBlockScope(current, current.parent); }); + } + ts.getEnclosingBlockScopeContainer = getEnclosingBlockScopeContainer; + // Return display name of an identifier + // Computed property names will just be emitted as "[]", where is the source + // text of the expression in the computed property. + function declarationNameToString(name) { + return !name || getFullWidth(name) === 0 ? "(Missing)" : getTextOfNode(name); + } + ts.declarationNameToString = declarationNameToString; + function getNameFromIndexInfo(info) { + return info.declaration ? declarationNameToString(info.declaration.parameters[0].name) : undefined; + } + ts.getNameFromIndexInfo = getNameFromIndexInfo; + function isComputedNonLiteralName(name) { + return name.kind === 154 /* ComputedPropertyName */ && !isStringOrNumericLiteralLike(name.expression); + } + ts.isComputedNonLiteralName = isComputedNonLiteralName; + function getTextOfPropertyName(name) { + switch (name.kind) { + case 75 /* Identifier */: + case 76 /* PrivateIdentifier */: + return name.escapedText; + case 10 /* StringLiteral */: + case 8 /* NumericLiteral */: + case 14 /* NoSubstitutionTemplateLiteral */: + return ts.escapeLeadingUnderscores(name.text); + case 154 /* ComputedPropertyName */: + if (isStringOrNumericLiteralLike(name.expression)) + return ts.escapeLeadingUnderscores(name.expression.text); + return ts.Debug.fail("Text of property name cannot be read from non-literal-valued ComputedPropertyNames"); + default: + return ts.Debug.assertNever(name); + } + } + ts.getTextOfPropertyName = getTextOfPropertyName; + function entityNameToString(name) { + switch (name.kind) { + case 104 /* ThisKeyword */: + return "this"; + case 76 /* PrivateIdentifier */: + case 75 /* Identifier */: + return getFullWidth(name) === 0 ? ts.idText(name) : getTextOfNode(name); + case 153 /* QualifiedName */: + return entityNameToString(name.left) + "." + entityNameToString(name.right); + case 194 /* PropertyAccessExpression */: + if (ts.isIdentifier(name.name) || ts.isPrivateIdentifier(name.name)) { + return entityNameToString(name.expression) + "." + entityNameToString(name.name); + } + else { + return ts.Debug.assertNever(name.name); + } + default: + return ts.Debug.assertNever(name); + } + } + ts.entityNameToString = entityNameToString; + function createDiagnosticForNode(node, message, arg0, arg1, arg2, arg3) { + var sourceFile = getSourceFileOfNode(node); + return createDiagnosticForNodeInSourceFile(sourceFile, node, message, arg0, arg1, arg2, arg3); + } + ts.createDiagnosticForNode = createDiagnosticForNode; + function createDiagnosticForNodeArray(sourceFile, nodes, message, arg0, arg1, arg2, arg3) { + var start = ts.skipTrivia(sourceFile.text, nodes.pos); + return createFileDiagnostic(sourceFile, start, nodes.end - start, message, arg0, arg1, arg2, arg3); + } + ts.createDiagnosticForNodeArray = createDiagnosticForNodeArray; + function createDiagnosticForNodeInSourceFile(sourceFile, node, message, arg0, arg1, arg2, arg3) { + var span = getErrorSpanForNode(sourceFile, node); + return createFileDiagnostic(sourceFile, span.start, span.length, message, arg0, arg1, arg2, arg3); + } + ts.createDiagnosticForNodeInSourceFile = createDiagnosticForNodeInSourceFile; + function createDiagnosticForNodeFromMessageChain(node, messageChain, relatedInformation) { + var sourceFile = getSourceFileOfNode(node); + var span = getErrorSpanForNode(sourceFile, node); + return { + file: sourceFile, + start: span.start, + length: span.length, + code: messageChain.code, + category: messageChain.category, + messageText: messageChain.next ? messageChain : messageChain.messageText, + relatedInformation: relatedInformation + }; + } + ts.createDiagnosticForNodeFromMessageChain = createDiagnosticForNodeFromMessageChain; + function createDiagnosticForRange(sourceFile, range, message) { + return { + file: sourceFile, + start: range.pos, + length: range.end - range.pos, + code: message.code, + category: message.category, + messageText: message.message, + }; + } + ts.createDiagnosticForRange = createDiagnosticForRange; + function getSpanOfTokenAtPosition(sourceFile, pos) { + var scanner = ts.createScanner(sourceFile.languageVersion, /*skipTrivia*/ true, sourceFile.languageVariant, sourceFile.text, /*onError:*/ undefined, pos); + scanner.scan(); + var start = scanner.getTokenPos(); + return ts.createTextSpanFromBounds(start, scanner.getTextPos()); + } + ts.getSpanOfTokenAtPosition = getSpanOfTokenAtPosition; + function getErrorSpanForArrowFunction(sourceFile, node) { + var pos = ts.skipTrivia(sourceFile.text, node.pos); + if (node.body && node.body.kind === 223 /* Block */) { + var startLine = ts.getLineAndCharacterOfPosition(sourceFile, node.body.pos).line; + var endLine = ts.getLineAndCharacterOfPosition(sourceFile, node.body.end).line; + if (startLine < endLine) { + // The arrow function spans multiple lines, + // make the error span be the first line, inclusive. + return ts.createTextSpan(pos, getEndLinePosition(startLine, sourceFile) - pos + 1); + } + } + return ts.createTextSpanFromBounds(pos, node.end); + } + function getErrorSpanForNode(sourceFile, node) { + var errorNode = node; + switch (node.kind) { + case 290 /* SourceFile */: + var pos_1 = ts.skipTrivia(sourceFile.text, 0, /*stopAfterLineBreak*/ false); + if (pos_1 === sourceFile.text.length) { + // file is empty - return span for the beginning of the file + return ts.createTextSpan(0, 0); + } + return getSpanOfTokenAtPosition(sourceFile, pos_1); + // This list is a work in progress. Add missing node kinds to improve their error + // spans. + case 242 /* VariableDeclaration */: + case 191 /* BindingElement */: + case 245 /* ClassDeclaration */: + case 214 /* ClassExpression */: + case 246 /* InterfaceDeclaration */: + case 249 /* ModuleDeclaration */: + case 248 /* EnumDeclaration */: + case 284 /* EnumMember */: + case 244 /* FunctionDeclaration */: + case 201 /* FunctionExpression */: + case 161 /* MethodDeclaration */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + case 247 /* TypeAliasDeclaration */: + case 159 /* PropertyDeclaration */: + case 158 /* PropertySignature */: + errorNode = node.name; + break; + case 202 /* ArrowFunction */: + return getErrorSpanForArrowFunction(sourceFile, node); + case 277 /* CaseClause */: + case 278 /* DefaultClause */: + var start = ts.skipTrivia(sourceFile.text, node.pos); + var end = node.statements.length > 0 ? node.statements[0].pos : node.end; + return ts.createTextSpanFromBounds(start, end); + } + if (errorNode === undefined) { + // If we don't have a better node, then just set the error on the first token of + // construct. + return getSpanOfTokenAtPosition(sourceFile, node.pos); + } + ts.Debug.assert(!ts.isJSDoc(errorNode)); + var isMissing = nodeIsMissing(errorNode); + var pos = isMissing || ts.isJsxText(node) + ? errorNode.pos + : ts.skipTrivia(sourceFile.text, errorNode.pos); + // These asserts should all be satisfied for a properly constructed `errorNode`. + if (isMissing) { + ts.Debug.assert(pos === errorNode.pos, "This failure could trigger https://github.com/Microsoft/TypeScript/issues/20809"); + ts.Debug.assert(pos === errorNode.end, "This failure could trigger https://github.com/Microsoft/TypeScript/issues/20809"); + } + else { + ts.Debug.assert(pos >= errorNode.pos, "This failure could trigger https://github.com/Microsoft/TypeScript/issues/20809"); + ts.Debug.assert(pos <= errorNode.end, "This failure could trigger https://github.com/Microsoft/TypeScript/issues/20809"); + } + return ts.createTextSpanFromBounds(pos, errorNode.end); + } + ts.getErrorSpanForNode = getErrorSpanForNode; + function isExternalOrCommonJsModule(file) { + return (file.externalModuleIndicator || file.commonJsModuleIndicator) !== undefined; + } + ts.isExternalOrCommonJsModule = isExternalOrCommonJsModule; + function isJsonSourceFile(file) { + return file.scriptKind === 6 /* JSON */; + } + ts.isJsonSourceFile = isJsonSourceFile; + function isEnumConst(node) { + return !!(ts.getCombinedModifierFlags(node) & 2048 /* Const */); + } + ts.isEnumConst = isEnumConst; + function isDeclarationReadonly(declaration) { + return !!(ts.getCombinedModifierFlags(declaration) & 64 /* Readonly */ && !ts.isParameterPropertyDeclaration(declaration, declaration.parent)); + } + ts.isDeclarationReadonly = isDeclarationReadonly; + function isVarConst(node) { + return !!(ts.getCombinedNodeFlags(node) & 2 /* Const */); + } + ts.isVarConst = isVarConst; + function isLet(node) { + return !!(ts.getCombinedNodeFlags(node) & 1 /* Let */); + } + ts.isLet = isLet; + function isSuperCall(n) { + return n.kind === 196 /* CallExpression */ && n.expression.kind === 102 /* SuperKeyword */; + } + ts.isSuperCall = isSuperCall; + function isImportCall(n) { + return n.kind === 196 /* CallExpression */ && n.expression.kind === 96 /* ImportKeyword */; + } + ts.isImportCall = isImportCall; + function isImportMeta(n) { + return ts.isMetaProperty(n) + && n.keywordToken === 96 /* ImportKeyword */ + && n.name.escapedText === "meta"; + } + ts.isImportMeta = isImportMeta; + function isLiteralImportTypeNode(n) { + return ts.isImportTypeNode(n) && ts.isLiteralTypeNode(n.argument) && ts.isStringLiteral(n.argument.literal); + } + ts.isLiteralImportTypeNode = isLiteralImportTypeNode; + function isPrologueDirective(node) { + return node.kind === 226 /* ExpressionStatement */ + && node.expression.kind === 10 /* StringLiteral */; + } + ts.isPrologueDirective = isPrologueDirective; + function isCustomPrologue(node) { + return !!(getEmitFlags(node) & 1048576 /* CustomPrologue */); + } + ts.isCustomPrologue = isCustomPrologue; + function isHoistedFunction(node) { + return isCustomPrologue(node) + && ts.isFunctionDeclaration(node); + } + ts.isHoistedFunction = isHoistedFunction; + function isHoistedVariable(node) { + return ts.isIdentifier(node.name) + && !node.initializer; + } + function isHoistedVariableStatement(node) { + return isCustomPrologue(node) + && ts.isVariableStatement(node) + && ts.every(node.declarationList.declarations, isHoistedVariable); + } + ts.isHoistedVariableStatement = isHoistedVariableStatement; + function getLeadingCommentRangesOfNode(node, sourceFileOfNode) { + return node.kind !== 11 /* JsxText */ ? ts.getLeadingCommentRanges(sourceFileOfNode.text, node.pos) : undefined; + } + ts.getLeadingCommentRangesOfNode = getLeadingCommentRangesOfNode; + function getJSDocCommentRanges(node, text) { + var commentRanges = (node.kind === 156 /* Parameter */ || + node.kind === 155 /* TypeParameter */ || + node.kind === 201 /* FunctionExpression */ || + node.kind === 202 /* ArrowFunction */ || + node.kind === 200 /* ParenthesizedExpression */) ? + ts.concatenate(ts.getTrailingCommentRanges(text, node.pos), ts.getLeadingCommentRanges(text, node.pos)) : + ts.getLeadingCommentRanges(text, node.pos); + // True if the comment starts with '/**' but not if it is '/**/' + return ts.filter(commentRanges, function (comment) { + return text.charCodeAt(comment.pos + 1) === 42 /* asterisk */ && + text.charCodeAt(comment.pos + 2) === 42 /* asterisk */ && + text.charCodeAt(comment.pos + 3) !== 47 /* slash */; + }); + } + ts.getJSDocCommentRanges = getJSDocCommentRanges; + ts.fullTripleSlashReferencePathRegEx = /^(\/\/\/\s*/; + var fullTripleSlashReferenceTypeReferenceDirectiveRegEx = /^(\/\/\/\s*/; + ts.fullTripleSlashAMDReferencePathRegEx = /^(\/\/\/\s*/; + var defaultLibReferenceRegEx = /^(\/\/\/\s*/; + function isPartOfTypeNode(node) { + if (168 /* FirstTypeNode */ <= node.kind && node.kind <= 188 /* LastTypeNode */) { + return true; + } + switch (node.kind) { + case 125 /* AnyKeyword */: + case 148 /* UnknownKeyword */: + case 140 /* NumberKeyword */: + case 151 /* BigIntKeyword */: + case 143 /* StringKeyword */: + case 128 /* BooleanKeyword */: + case 144 /* SymbolKeyword */: + case 141 /* ObjectKeyword */: + case 146 /* UndefinedKeyword */: + case 137 /* NeverKeyword */: + return true; + case 110 /* VoidKeyword */: + return node.parent.kind !== 205 /* VoidExpression */; + case 216 /* ExpressionWithTypeArguments */: + return !isExpressionWithTypeArgumentsInClassExtendsClause(node); + case 155 /* TypeParameter */: + return node.parent.kind === 186 /* MappedType */ || node.parent.kind === 181 /* InferType */; + // Identifiers and qualified names may be type nodes, depending on their context. Climb + // above them to find the lowest container + case 75 /* Identifier */: + // If the identifier is the RHS of a qualified name, then it's a type iff its parent is. + if (node.parent.kind === 153 /* QualifiedName */ && node.parent.right === node) { + node = node.parent; + } + else if (node.parent.kind === 194 /* PropertyAccessExpression */ && node.parent.name === node) { + node = node.parent; + } + // At this point, node is either a qualified name or an identifier + ts.Debug.assert(node.kind === 75 /* Identifier */ || node.kind === 153 /* QualifiedName */ || node.kind === 194 /* PropertyAccessExpression */, "'node' was expected to be a qualified name, identifier or property access in 'isPartOfTypeNode'."); + // falls through + case 153 /* QualifiedName */: + case 194 /* PropertyAccessExpression */: + case 104 /* ThisKeyword */: { + var parent = node.parent; + if (parent.kind === 172 /* TypeQuery */) { + return false; + } + if (parent.kind === 188 /* ImportType */) { + return !parent.isTypeOf; + } + // Do not recursively call isPartOfTypeNode on the parent. In the example: + // + // let a: A.B.C; + // + // Calling isPartOfTypeNode would consider the qualified name A.B a type node. + // Only C and A.B.C are type nodes. + if (168 /* FirstTypeNode */ <= parent.kind && parent.kind <= 188 /* LastTypeNode */) { + return true; + } + switch (parent.kind) { + case 216 /* ExpressionWithTypeArguments */: + return !isExpressionWithTypeArgumentsInClassExtendsClause(parent); + case 155 /* TypeParameter */: + return node === parent.constraint; + case 321 /* JSDocTemplateTag */: + return node === parent.constraint; + case 159 /* PropertyDeclaration */: + case 158 /* PropertySignature */: + case 156 /* Parameter */: + case 242 /* VariableDeclaration */: + return node === parent.type; + case 244 /* FunctionDeclaration */: + case 201 /* FunctionExpression */: + case 202 /* ArrowFunction */: + case 162 /* Constructor */: + case 161 /* MethodDeclaration */: + case 160 /* MethodSignature */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + return node === parent.type; + case 165 /* CallSignature */: + case 166 /* ConstructSignature */: + case 167 /* IndexSignature */: + return node === parent.type; + case 199 /* TypeAssertionExpression */: + return node === parent.type; + case 196 /* CallExpression */: + case 197 /* NewExpression */: + return ts.contains(parent.typeArguments, node); + case 198 /* TaggedTemplateExpression */: + // TODO (drosen): TaggedTemplateExpressions may eventually support type arguments. + return false; + } + } + } + return false; + } + ts.isPartOfTypeNode = isPartOfTypeNode; + function isChildOfNodeWithKind(node, kind) { + while (node) { + if (node.kind === kind) { + return true; + } + node = node.parent; + } + return false; + } + ts.isChildOfNodeWithKind = isChildOfNodeWithKind; + // Warning: This has the same semantics as the forEach family of functions, + // in that traversal terminates in the event that 'visitor' supplies a truthy value. + function forEachReturnStatement(body, visitor) { + return traverse(body); + function traverse(node) { + switch (node.kind) { + case 235 /* ReturnStatement */: + return visitor(node); + case 251 /* CaseBlock */: + case 223 /* Block */: + case 227 /* IfStatement */: + case 228 /* DoStatement */: + case 229 /* WhileStatement */: + case 230 /* ForStatement */: + case 231 /* ForInStatement */: + case 232 /* ForOfStatement */: + case 236 /* WithStatement */: + case 237 /* SwitchStatement */: + case 277 /* CaseClause */: + case 278 /* DefaultClause */: + case 238 /* LabeledStatement */: + case 240 /* TryStatement */: + case 280 /* CatchClause */: + return ts.forEachChild(node, traverse); + } + } + } + ts.forEachReturnStatement = forEachReturnStatement; + function forEachYieldExpression(body, visitor) { + return traverse(body); + function traverse(node) { + switch (node.kind) { + case 212 /* YieldExpression */: + visitor(node); + var operand = node.expression; + if (operand) { + traverse(operand); + } + return; + case 248 /* EnumDeclaration */: + case 246 /* InterfaceDeclaration */: + case 249 /* ModuleDeclaration */: + case 247 /* TypeAliasDeclaration */: + // These are not allowed inside a generator now, but eventually they may be allowed + // as local types. Regardless, skip them to avoid the work. + return; + default: + if (ts.isFunctionLike(node)) { + if (node.name && node.name.kind === 154 /* ComputedPropertyName */) { + // Note that we will not include methods/accessors of a class because they would require + // first descending into the class. This is by design. + traverse(node.name.expression); + return; + } + } + else if (!isPartOfTypeNode(node)) { + // This is the general case, which should include mostly expressions and statements. + // Also includes NodeArrays. + ts.forEachChild(node, traverse); + } + } + } + } + ts.forEachYieldExpression = forEachYieldExpression; + /** + * Gets the most likely element type for a TypeNode. This is not an exhaustive test + * as it assumes a rest argument can only be an array type (either T[], or Array). + * + * @param node The type node. + */ + function getRestParameterElementType(node) { + if (node && node.kind === 174 /* ArrayType */) { + return node.elementType; + } + else if (node && node.kind === 169 /* TypeReference */) { + return ts.singleOrUndefined(node.typeArguments); + } + else { + return undefined; + } + } + ts.getRestParameterElementType = getRestParameterElementType; + function getMembersOfDeclaration(node) { + switch (node.kind) { + case 246 /* InterfaceDeclaration */: + case 245 /* ClassDeclaration */: + case 214 /* ClassExpression */: + case 173 /* TypeLiteral */: + return node.members; + case 193 /* ObjectLiteralExpression */: + return node.properties; + } + } + ts.getMembersOfDeclaration = getMembersOfDeclaration; + function isVariableLike(node) { + if (node) { + switch (node.kind) { + case 191 /* BindingElement */: + case 284 /* EnumMember */: + case 156 /* Parameter */: + case 281 /* PropertyAssignment */: + case 159 /* PropertyDeclaration */: + case 158 /* PropertySignature */: + case 282 /* ShorthandPropertyAssignment */: + case 242 /* VariableDeclaration */: + return true; + } + } + return false; + } + ts.isVariableLike = isVariableLike; + function isVariableLikeOrAccessor(node) { + return isVariableLike(node) || ts.isAccessor(node); + } + ts.isVariableLikeOrAccessor = isVariableLikeOrAccessor; + function isVariableDeclarationInVariableStatement(node) { + return node.parent.kind === 243 /* VariableDeclarationList */ + && node.parent.parent.kind === 225 /* VariableStatement */; + } + ts.isVariableDeclarationInVariableStatement = isVariableDeclarationInVariableStatement; + function isValidESSymbolDeclaration(node) { + return ts.isVariableDeclaration(node) ? isVarConst(node) && ts.isIdentifier(node.name) && isVariableDeclarationInVariableStatement(node) : + ts.isPropertyDeclaration(node) ? hasReadonlyModifier(node) && hasStaticModifier(node) : + ts.isPropertySignature(node) && hasReadonlyModifier(node); + } + ts.isValidESSymbolDeclaration = isValidESSymbolDeclaration; + function introducesArgumentsExoticObject(node) { + switch (node.kind) { + case 161 /* MethodDeclaration */: + case 160 /* MethodSignature */: + case 162 /* Constructor */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + case 244 /* FunctionDeclaration */: + case 201 /* FunctionExpression */: + return true; + } + return false; + } + ts.introducesArgumentsExoticObject = introducesArgumentsExoticObject; + function unwrapInnermostStatementOfLabel(node, beforeUnwrapLabelCallback) { + while (true) { + if (beforeUnwrapLabelCallback) { + beforeUnwrapLabelCallback(node); + } + if (node.statement.kind !== 238 /* LabeledStatement */) { + return node.statement; + } + node = node.statement; + } + } + ts.unwrapInnermostStatementOfLabel = unwrapInnermostStatementOfLabel; + function isFunctionBlock(node) { + return node && node.kind === 223 /* Block */ && ts.isFunctionLike(node.parent); + } + ts.isFunctionBlock = isFunctionBlock; + function isObjectLiteralMethod(node) { + return node && node.kind === 161 /* MethodDeclaration */ && node.parent.kind === 193 /* ObjectLiteralExpression */; + } + ts.isObjectLiteralMethod = isObjectLiteralMethod; + function isObjectLiteralOrClassExpressionMethod(node) { + return node.kind === 161 /* MethodDeclaration */ && + (node.parent.kind === 193 /* ObjectLiteralExpression */ || + node.parent.kind === 214 /* ClassExpression */); + } + ts.isObjectLiteralOrClassExpressionMethod = isObjectLiteralOrClassExpressionMethod; + function isIdentifierTypePredicate(predicate) { + return predicate && predicate.kind === 1 /* Identifier */; + } + ts.isIdentifierTypePredicate = isIdentifierTypePredicate; + function isThisTypePredicate(predicate) { + return predicate && predicate.kind === 0 /* This */; + } + ts.isThisTypePredicate = isThisTypePredicate; + function getPropertyAssignment(objectLiteral, key, key2) { + return objectLiteral.properties.filter(function (property) { + if (property.kind === 281 /* PropertyAssignment */) { + var propName = getTextOfPropertyName(property.name); + return key === propName || (!!key2 && key2 === propName); + } + return false; + }); + } + ts.getPropertyAssignment = getPropertyAssignment; + function getTsConfigObjectLiteralExpression(tsConfigSourceFile) { + if (tsConfigSourceFile && tsConfigSourceFile.statements.length) { + var expression = tsConfigSourceFile.statements[0].expression; + return ts.tryCast(expression, ts.isObjectLiteralExpression); + } + } + ts.getTsConfigObjectLiteralExpression = getTsConfigObjectLiteralExpression; + function getTsConfigPropArrayElementValue(tsConfigSourceFile, propKey, elementValue) { + return ts.firstDefined(getTsConfigPropArray(tsConfigSourceFile, propKey), function (property) { + return ts.isArrayLiteralExpression(property.initializer) ? + ts.find(property.initializer.elements, function (element) { return ts.isStringLiteral(element) && element.text === elementValue; }) : + undefined; + }); + } + ts.getTsConfigPropArrayElementValue = getTsConfigPropArrayElementValue; + function getTsConfigPropArray(tsConfigSourceFile, propKey) { + var jsonObjectLiteral = getTsConfigObjectLiteralExpression(tsConfigSourceFile); + return jsonObjectLiteral ? getPropertyAssignment(jsonObjectLiteral, propKey) : ts.emptyArray; + } + ts.getTsConfigPropArray = getTsConfigPropArray; + function getContainingFunction(node) { + return findAncestor(node.parent, ts.isFunctionLike); + } + ts.getContainingFunction = getContainingFunction; + function getContainingFunctionDeclaration(node) { + return findAncestor(node.parent, ts.isFunctionLikeDeclaration); + } + ts.getContainingFunctionDeclaration = getContainingFunctionDeclaration; + function getContainingClass(node) { + return findAncestor(node.parent, ts.isClassLike); + } + ts.getContainingClass = getContainingClass; + function getThisContainer(node, includeArrowFunctions) { + ts.Debug.assert(node.kind !== 290 /* SourceFile */); + while (true) { + node = node.parent; + if (!node) { + return ts.Debug.fail(); // If we never pass in a SourceFile, this should be unreachable, since we'll stop when we reach that. + } + switch (node.kind) { + case 154 /* ComputedPropertyName */: + // If the grandparent node is an object literal (as opposed to a class), + // then the computed property is not a 'this' container. + // A computed property name in a class needs to be a this container + // so that we can error on it. + if (ts.isClassLike(node.parent.parent)) { + return node; + } + // If this is a computed property, then the parent should not + // make it a this container. The parent might be a property + // in an object literal, like a method or accessor. But in order for + // such a parent to be a this container, the reference must be in + // the *body* of the container. + node = node.parent; + break; + case 157 /* Decorator */: + // Decorators are always applied outside of the body of a class or method. + if (node.parent.kind === 156 /* Parameter */ && ts.isClassElement(node.parent.parent)) { + // If the decorator's parent is a Parameter, we resolve the this container from + // the grandparent class declaration. + node = node.parent.parent; + } + else if (ts.isClassElement(node.parent)) { + // If the decorator's parent is a class element, we resolve the 'this' container + // from the parent class declaration. + node = node.parent; + } + break; + case 202 /* ArrowFunction */: + if (!includeArrowFunctions) { + continue; + } + // falls through + case 244 /* FunctionDeclaration */: + case 201 /* FunctionExpression */: + case 249 /* ModuleDeclaration */: + case 159 /* PropertyDeclaration */: + case 158 /* PropertySignature */: + case 161 /* MethodDeclaration */: + case 160 /* MethodSignature */: + case 162 /* Constructor */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + case 165 /* CallSignature */: + case 166 /* ConstructSignature */: + case 167 /* IndexSignature */: + case 248 /* EnumDeclaration */: + case 290 /* SourceFile */: + return node; + } + } + } + ts.getThisContainer = getThisContainer; + function getNewTargetContainer(node) { + var container = getThisContainer(node, /*includeArrowFunctions*/ false); + if (container) { + switch (container.kind) { + case 162 /* Constructor */: + case 244 /* FunctionDeclaration */: + case 201 /* FunctionExpression */: + return container; + } + } + return undefined; + } + ts.getNewTargetContainer = getNewTargetContainer; + /** + * Given an super call/property node, returns the closest node where + * - a super call/property access is legal in the node and not legal in the parent node the node. + * i.e. super call is legal in constructor but not legal in the class body. + * - the container is an arrow function (so caller might need to call getSuperContainer again in case it needs to climb higher) + * - a super call/property is definitely illegal in the container (but might be legal in some subnode) + * i.e. super property access is illegal in function declaration but can be legal in the statement list + */ + function getSuperContainer(node, stopOnFunctions) { + while (true) { + node = node.parent; + if (!node) { + return node; + } + switch (node.kind) { + case 154 /* ComputedPropertyName */: + node = node.parent; + break; + case 244 /* FunctionDeclaration */: + case 201 /* FunctionExpression */: + case 202 /* ArrowFunction */: + if (!stopOnFunctions) { + continue; + } + // falls through + case 159 /* PropertyDeclaration */: + case 158 /* PropertySignature */: + case 161 /* MethodDeclaration */: + case 160 /* MethodSignature */: + case 162 /* Constructor */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + return node; + case 157 /* Decorator */: + // Decorators are always applied outside of the body of a class or method. + if (node.parent.kind === 156 /* Parameter */ && ts.isClassElement(node.parent.parent)) { + // If the decorator's parent is a Parameter, we resolve the this container from + // the grandparent class declaration. + node = node.parent.parent; + } + else if (ts.isClassElement(node.parent)) { + // If the decorator's parent is a class element, we resolve the 'this' container + // from the parent class declaration. + node = node.parent; + } + break; + } + } + } + ts.getSuperContainer = getSuperContainer; + function getImmediatelyInvokedFunctionExpression(func) { + if (func.kind === 201 /* FunctionExpression */ || func.kind === 202 /* ArrowFunction */) { + var prev = func; + var parent = func.parent; + while (parent.kind === 200 /* ParenthesizedExpression */) { + prev = parent; + parent = parent.parent; + } + if (parent.kind === 196 /* CallExpression */ && parent.expression === prev) { + return parent; + } + } + } + ts.getImmediatelyInvokedFunctionExpression = getImmediatelyInvokedFunctionExpression; + function isSuperOrSuperProperty(node) { + return node.kind === 102 /* SuperKeyword */ + || isSuperProperty(node); + } + ts.isSuperOrSuperProperty = isSuperOrSuperProperty; + /** + * Determines whether a node is a property or element access expression for `super`. + */ + function isSuperProperty(node) { + var kind = node.kind; + return (kind === 194 /* PropertyAccessExpression */ || kind === 195 /* ElementAccessExpression */) + && node.expression.kind === 102 /* SuperKeyword */; + } + ts.isSuperProperty = isSuperProperty; + /** + * Determines whether a node is a property or element access expression for `this`. + */ + function isThisProperty(node) { + var kind = node.kind; + return (kind === 194 /* PropertyAccessExpression */ || kind === 195 /* ElementAccessExpression */) + && node.expression.kind === 104 /* ThisKeyword */; + } + ts.isThisProperty = isThisProperty; + function getEntityNameFromTypeNode(node) { + switch (node.kind) { + case 169 /* TypeReference */: + return node.typeName; + case 216 /* ExpressionWithTypeArguments */: + return isEntityNameExpression(node.expression) + ? node.expression + : undefined; + case 75 /* Identifier */: + case 153 /* QualifiedName */: + return node; + } + return undefined; + } + ts.getEntityNameFromTypeNode = getEntityNameFromTypeNode; + function getInvokedExpression(node) { + switch (node.kind) { + case 198 /* TaggedTemplateExpression */: + return node.tag; + case 268 /* JsxOpeningElement */: + case 267 /* JsxSelfClosingElement */: + return node.tagName; + default: + return node.expression; + } + } + ts.getInvokedExpression = getInvokedExpression; + function nodeCanBeDecorated(node, parent, grandparent) { + // private names cannot be used with decorators yet + if (ts.isNamedDeclaration(node) && ts.isPrivateIdentifier(node.name)) { + return false; + } + switch (node.kind) { + case 245 /* ClassDeclaration */: + // classes are valid targets + return true; + case 159 /* PropertyDeclaration */: + // property declarations are valid if their parent is a class declaration. + return parent.kind === 245 /* ClassDeclaration */; + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + case 161 /* MethodDeclaration */: + // if this method has a body and its parent is a class declaration, this is a valid target. + return node.body !== undefined + && parent.kind === 245 /* ClassDeclaration */; + case 156 /* Parameter */: + // if the parameter's parent has a body and its grandparent is a class declaration, this is a valid target; + return parent.body !== undefined + && (parent.kind === 162 /* Constructor */ + || parent.kind === 161 /* MethodDeclaration */ + || parent.kind === 164 /* SetAccessor */) + && grandparent.kind === 245 /* ClassDeclaration */; + } + return false; + } + ts.nodeCanBeDecorated = nodeCanBeDecorated; + function nodeIsDecorated(node, parent, grandparent) { + return node.decorators !== undefined + && nodeCanBeDecorated(node, parent, grandparent); // TODO: GH#18217 + } + ts.nodeIsDecorated = nodeIsDecorated; + function nodeOrChildIsDecorated(node, parent, grandparent) { + return nodeIsDecorated(node, parent, grandparent) || childIsDecorated(node, parent); // TODO: GH#18217 + } + ts.nodeOrChildIsDecorated = nodeOrChildIsDecorated; + function childIsDecorated(node, parent) { + switch (node.kind) { + case 245 /* ClassDeclaration */: + return ts.some(node.members, function (m) { return nodeOrChildIsDecorated(m, node, parent); }); // TODO: GH#18217 + case 161 /* MethodDeclaration */: + case 164 /* SetAccessor */: + return ts.some(node.parameters, function (p) { return nodeIsDecorated(p, node, parent); }); // TODO: GH#18217 + default: + return false; + } + } + ts.childIsDecorated = childIsDecorated; + function isJSXTagName(node) { + var parent = node.parent; + if (parent.kind === 268 /* JsxOpeningElement */ || + parent.kind === 267 /* JsxSelfClosingElement */ || + parent.kind === 269 /* JsxClosingElement */) { + return parent.tagName === node; + } + return false; + } + ts.isJSXTagName = isJSXTagName; + function isExpressionNode(node) { + switch (node.kind) { + case 102 /* SuperKeyword */: + case 100 /* NullKeyword */: + case 106 /* TrueKeyword */: + case 91 /* FalseKeyword */: + case 13 /* RegularExpressionLiteral */: + case 192 /* ArrayLiteralExpression */: + case 193 /* ObjectLiteralExpression */: + case 194 /* PropertyAccessExpression */: + case 195 /* ElementAccessExpression */: + case 196 /* CallExpression */: + case 197 /* NewExpression */: + case 198 /* TaggedTemplateExpression */: + case 217 /* AsExpression */: + case 199 /* TypeAssertionExpression */: + case 218 /* NonNullExpression */: + case 200 /* ParenthesizedExpression */: + case 201 /* FunctionExpression */: + case 214 /* ClassExpression */: + case 202 /* ArrowFunction */: + case 205 /* VoidExpression */: + case 203 /* DeleteExpression */: + case 204 /* TypeOfExpression */: + case 207 /* PrefixUnaryExpression */: + case 208 /* PostfixUnaryExpression */: + case 209 /* BinaryExpression */: + case 210 /* ConditionalExpression */: + case 213 /* SpreadElement */: + case 211 /* TemplateExpression */: + case 215 /* OmittedExpression */: + case 266 /* JsxElement */: + case 267 /* JsxSelfClosingElement */: + case 270 /* JsxFragment */: + case 212 /* YieldExpression */: + case 206 /* AwaitExpression */: + case 219 /* MetaProperty */: + return true; + case 153 /* QualifiedName */: + while (node.parent.kind === 153 /* QualifiedName */) { + node = node.parent; + } + return node.parent.kind === 172 /* TypeQuery */ || isJSXTagName(node); + case 75 /* Identifier */: + if (node.parent.kind === 172 /* TypeQuery */ || isJSXTagName(node)) { + return true; + } + // falls through + case 8 /* NumericLiteral */: + case 9 /* BigIntLiteral */: + case 10 /* StringLiteral */: + case 14 /* NoSubstitutionTemplateLiteral */: + case 104 /* ThisKeyword */: + return isInExpressionContext(node); + default: + return false; + } + } + ts.isExpressionNode = isExpressionNode; + function isInExpressionContext(node) { + var parent = node.parent; + switch (parent.kind) { + case 242 /* VariableDeclaration */: + case 156 /* Parameter */: + case 159 /* PropertyDeclaration */: + case 158 /* PropertySignature */: + case 284 /* EnumMember */: + case 281 /* PropertyAssignment */: + case 191 /* BindingElement */: + return parent.initializer === node; + case 226 /* ExpressionStatement */: + case 227 /* IfStatement */: + case 228 /* DoStatement */: + case 229 /* WhileStatement */: + case 235 /* ReturnStatement */: + case 236 /* WithStatement */: + case 237 /* SwitchStatement */: + case 277 /* CaseClause */: + case 239 /* ThrowStatement */: + return parent.expression === node; + case 230 /* ForStatement */: + var forStatement = parent; + return (forStatement.initializer === node && forStatement.initializer.kind !== 243 /* VariableDeclarationList */) || + forStatement.condition === node || + forStatement.incrementor === node; + case 231 /* ForInStatement */: + case 232 /* ForOfStatement */: + var forInStatement = parent; + return (forInStatement.initializer === node && forInStatement.initializer.kind !== 243 /* VariableDeclarationList */) || + forInStatement.expression === node; + case 199 /* TypeAssertionExpression */: + case 217 /* AsExpression */: + return node === parent.expression; + case 221 /* TemplateSpan */: + return node === parent.expression; + case 154 /* ComputedPropertyName */: + return node === parent.expression; + case 157 /* Decorator */: + case 276 /* JsxExpression */: + case 275 /* JsxSpreadAttribute */: + case 283 /* SpreadAssignment */: + return true; + case 216 /* ExpressionWithTypeArguments */: + return parent.expression === node && isExpressionWithTypeArgumentsInClassExtendsClause(parent); + case 282 /* ShorthandPropertyAssignment */: + return parent.objectAssignmentInitializer === node; + default: + return isExpressionNode(parent); + } + } + ts.isInExpressionContext = isInExpressionContext; + function isPartOfTypeQuery(node) { + while (node.kind === 153 /* QualifiedName */ || node.kind === 75 /* Identifier */) { + node = node.parent; + } + return node.kind === 172 /* TypeQuery */; + } + ts.isPartOfTypeQuery = isPartOfTypeQuery; + function isExternalModuleImportEqualsDeclaration(node) { + return node.kind === 253 /* ImportEqualsDeclaration */ && node.moduleReference.kind === 265 /* ExternalModuleReference */; + } + ts.isExternalModuleImportEqualsDeclaration = isExternalModuleImportEqualsDeclaration; + function getExternalModuleImportEqualsDeclarationExpression(node) { + ts.Debug.assert(isExternalModuleImportEqualsDeclaration(node)); + return node.moduleReference.expression; + } + ts.getExternalModuleImportEqualsDeclarationExpression = getExternalModuleImportEqualsDeclarationExpression; + function isInternalModuleImportEqualsDeclaration(node) { + return node.kind === 253 /* ImportEqualsDeclaration */ && node.moduleReference.kind !== 265 /* ExternalModuleReference */; + } + ts.isInternalModuleImportEqualsDeclaration = isInternalModuleImportEqualsDeclaration; + function isSourceFileJS(file) { + return isInJSFile(file); + } + ts.isSourceFileJS = isSourceFileJS; + function isSourceFileNotJS(file) { + return !isInJSFile(file); + } + ts.isSourceFileNotJS = isSourceFileNotJS; + function isInJSFile(node) { + return !!node && !!(node.flags & 131072 /* JavaScriptFile */); + } + ts.isInJSFile = isInJSFile; + function isInJsonFile(node) { + return !!node && !!(node.flags & 33554432 /* JsonFile */); + } + ts.isInJsonFile = isInJsonFile; + function isSourceFileNotJson(file) { + return !isJsonSourceFile(file); + } + ts.isSourceFileNotJson = isSourceFileNotJson; + function isInJSDoc(node) { + return !!node && !!(node.flags & 4194304 /* JSDoc */); + } + ts.isInJSDoc = isInJSDoc; + function isJSDocIndexSignature(node) { + return ts.isTypeReferenceNode(node) && + ts.isIdentifier(node.typeName) && + node.typeName.escapedText === "Object" && + node.typeArguments && node.typeArguments.length === 2 && + (node.typeArguments[0].kind === 143 /* StringKeyword */ || node.typeArguments[0].kind === 140 /* NumberKeyword */); + } + ts.isJSDocIndexSignature = isJSDocIndexSignature; + function isRequireCall(callExpression, requireStringLiteralLikeArgument) { + if (callExpression.kind !== 196 /* CallExpression */) { + return false; + } + var _a = callExpression, expression = _a.expression, args = _a.arguments; + if (expression.kind !== 75 /* Identifier */ || expression.escapedText !== "require") { + return false; + } + if (args.length !== 1) { + return false; + } + var arg = args[0]; + return !requireStringLiteralLikeArgument || ts.isStringLiteralLike(arg); + } + ts.isRequireCall = isRequireCall; + function isRequireVariableDeclaration(node, requireStringLiteralLikeArgument) { + return ts.isVariableDeclaration(node) && !!node.initializer && isRequireCall(node.initializer, requireStringLiteralLikeArgument); + } + ts.isRequireVariableDeclaration = isRequireVariableDeclaration; + function isRequireVariableDeclarationStatement(node, requireStringLiteralLikeArgument) { + if (requireStringLiteralLikeArgument === void 0) { requireStringLiteralLikeArgument = true; } + return ts.isVariableStatement(node) && ts.every(node.declarationList.declarations, function (decl) { return isRequireVariableDeclaration(decl, requireStringLiteralLikeArgument); }); + } + ts.isRequireVariableDeclarationStatement = isRequireVariableDeclarationStatement; + function isSingleOrDoubleQuote(charCode) { + return charCode === 39 /* singleQuote */ || charCode === 34 /* doubleQuote */; + } + ts.isSingleOrDoubleQuote = isSingleOrDoubleQuote; + function isStringDoubleQuoted(str, sourceFile) { + return getSourceTextOfNodeFromSourceFile(sourceFile, str).charCodeAt(0) === 34 /* doubleQuote */; + } + ts.isStringDoubleQuoted = isStringDoubleQuoted; + function getDeclarationOfExpando(node) { + if (!node.parent) { + return undefined; + } + var name; + var decl; + if (ts.isVariableDeclaration(node.parent) && node.parent.initializer === node) { + if (!isInJSFile(node) && !isVarConst(node.parent)) { + return undefined; + } + name = node.parent.name; + decl = node.parent; + } + else if (ts.isBinaryExpression(node.parent)) { + var parentNode = node.parent; + var parentNodeOperator = node.parent.operatorToken.kind; + if (parentNodeOperator === 62 /* EqualsToken */ && parentNode.right === node) { + name = parentNode.left; + decl = name; + } + else if (parentNodeOperator === 56 /* BarBarToken */ || parentNodeOperator === 60 /* QuestionQuestionToken */) { + if (ts.isVariableDeclaration(parentNode.parent) && parentNode.parent.initializer === parentNode) { + name = parentNode.parent.name; + decl = parentNode.parent; + } + else if (ts.isBinaryExpression(parentNode.parent) && parentNode.parent.operatorToken.kind === 62 /* EqualsToken */ && parentNode.parent.right === parentNode) { + name = parentNode.parent.left; + decl = name; + } + if (!name || !isBindableStaticNameExpression(name) || !isSameEntityName(name, parentNode.left)) { + return undefined; + } + } + } + if (!name || !getExpandoInitializer(node, isPrototypeAccess(name))) { + return undefined; + } + return decl; + } + ts.getDeclarationOfExpando = getDeclarationOfExpando; + function isAssignmentDeclaration(decl) { + return ts.isBinaryExpression(decl) || isAccessExpression(decl) || ts.isIdentifier(decl) || ts.isCallExpression(decl); + } + ts.isAssignmentDeclaration = isAssignmentDeclaration; + /** Get the initializer, taking into account defaulted Javascript initializers */ + function getEffectiveInitializer(node) { + if (isInJSFile(node) && node.initializer && + ts.isBinaryExpression(node.initializer) && + (node.initializer.operatorToken.kind === 56 /* BarBarToken */ || node.initializer.operatorToken.kind === 60 /* QuestionQuestionToken */) && + node.name && isEntityNameExpression(node.name) && isSameEntityName(node.name, node.initializer.left)) { + return node.initializer.right; + } + return node.initializer; + } + ts.getEffectiveInitializer = getEffectiveInitializer; + /** Get the declaration initializer when it is container-like (See getExpandoInitializer). */ + function getDeclaredExpandoInitializer(node) { + var init = getEffectiveInitializer(node); + return init && getExpandoInitializer(init, isPrototypeAccess(node.name)); + } + ts.getDeclaredExpandoInitializer = getDeclaredExpandoInitializer; + function hasExpandoValueProperty(node, isPrototypeAssignment) { + return ts.forEach(node.properties, function (p) { + return ts.isPropertyAssignment(p) && + ts.isIdentifier(p.name) && + p.name.escapedText === "value" && + p.initializer && + getExpandoInitializer(p.initializer, isPrototypeAssignment); + }); + } + /** + * Get the assignment 'initializer' -- the righthand side-- when the initializer is container-like (See getExpandoInitializer). + * We treat the right hand side of assignments with container-like initalizers as declarations. + */ + function getAssignedExpandoInitializer(node) { + if (node && node.parent && ts.isBinaryExpression(node.parent) && node.parent.operatorToken.kind === 62 /* EqualsToken */) { + var isPrototypeAssignment = isPrototypeAccess(node.parent.left); + return getExpandoInitializer(node.parent.right, isPrototypeAssignment) || + getDefaultedExpandoInitializer(node.parent.left, node.parent.right, isPrototypeAssignment); + } + if (node && ts.isCallExpression(node) && isBindableObjectDefinePropertyCall(node)) { + var result = hasExpandoValueProperty(node.arguments[2], node.arguments[1].text === "prototype"); + if (result) { + return result; + } + } + } + ts.getAssignedExpandoInitializer = getAssignedExpandoInitializer; + /** + * Recognized expando initializers are: + * 1. (function() {})() -- IIFEs + * 2. function() { } -- Function expressions + * 3. class { } -- Class expressions + * 4. {} -- Empty object literals + * 5. { ... } -- Non-empty object literals, when used to initialize a prototype, like `C.prototype = { m() { } }` + * + * This function returns the provided initializer, or undefined if it is not valid. + */ + function getExpandoInitializer(initializer, isPrototypeAssignment) { + if (ts.isCallExpression(initializer)) { + var e = skipParentheses(initializer.expression); + return e.kind === 201 /* FunctionExpression */ || e.kind === 202 /* ArrowFunction */ ? initializer : undefined; + } + if (initializer.kind === 201 /* FunctionExpression */ || + initializer.kind === 214 /* ClassExpression */ || + initializer.kind === 202 /* ArrowFunction */) { + return initializer; + } + if (ts.isObjectLiteralExpression(initializer) && (initializer.properties.length === 0 || isPrototypeAssignment)) { + return initializer; + } + } + ts.getExpandoInitializer = getExpandoInitializer; + /** + * A defaulted expando initializer matches the pattern + * `Lhs = Lhs || ExpandoInitializer` + * or `var Lhs = Lhs || ExpandoInitializer` + * + * The second Lhs is required to be the same as the first except that it may be prefixed with + * 'window.', 'global.' or 'self.' The second Lhs is otherwise ignored by the binder and checker. + */ + function getDefaultedExpandoInitializer(name, initializer, isPrototypeAssignment) { + var e = ts.isBinaryExpression(initializer) + && (initializer.operatorToken.kind === 56 /* BarBarToken */ || initializer.operatorToken.kind === 60 /* QuestionQuestionToken */) + && getExpandoInitializer(initializer.right, isPrototypeAssignment); + if (e && isSameEntityName(name, initializer.left)) { + return e; + } + } + function isDefaultedExpandoInitializer(node) { + var name = ts.isVariableDeclaration(node.parent) ? node.parent.name : + ts.isBinaryExpression(node.parent) && node.parent.operatorToken.kind === 62 /* EqualsToken */ ? node.parent.left : + undefined; + return name && getExpandoInitializer(node.right, isPrototypeAccess(name)) && isEntityNameExpression(name) && isSameEntityName(name, node.left); + } + ts.isDefaultedExpandoInitializer = isDefaultedExpandoInitializer; + /** Given an expando initializer, return its declaration name, or the left-hand side of the assignment if it's part of an assignment declaration. */ + function getNameOfExpando(node) { + if (ts.isBinaryExpression(node.parent)) { + var parent = ((node.parent.operatorToken.kind === 56 /* BarBarToken */ || node.parent.operatorToken.kind === 60 /* QuestionQuestionToken */) && ts.isBinaryExpression(node.parent.parent)) ? node.parent.parent : node.parent; + if (parent.operatorToken.kind === 62 /* EqualsToken */ && ts.isIdentifier(parent.left)) { + return parent.left; + } + } + else if (ts.isVariableDeclaration(node.parent)) { + return node.parent.name; + } + } + ts.getNameOfExpando = getNameOfExpando; + /** + * Is the 'declared' name the same as the one in the initializer? + * @return true for identical entity names, as well as ones where the initializer is prefixed with + * 'window', 'self' or 'global'. For example: + * + * var my = my || {} + * var min = window.min || {} + * my.app = self.my.app || class { } + */ + function isSameEntityName(name, initializer) { + if (isPropertyNameLiteral(name) && isPropertyNameLiteral(initializer)) { + return getTextOfIdentifierOrLiteral(name) === getTextOfIdentifierOrLiteral(name); + } + if (ts.isIdentifier(name) && isLiteralLikeAccess(initializer) && + (initializer.expression.kind === 104 /* ThisKeyword */ || + ts.isIdentifier(initializer.expression) && + (initializer.expression.escapedText === "window" || + initializer.expression.escapedText === "self" || + initializer.expression.escapedText === "global"))) { + var nameOrArgument = getNameOrArgument(initializer); + if (ts.isPrivateIdentifier(nameOrArgument)) { + ts.Debug.fail("Unexpected PrivateIdentifier in name expression with literal-like access."); + } + return isSameEntityName(name, nameOrArgument); + } + if (isLiteralLikeAccess(name) && isLiteralLikeAccess(initializer)) { + return getElementOrPropertyAccessName(name) === getElementOrPropertyAccessName(initializer) + && isSameEntityName(name.expression, initializer.expression); + } + return false; + } + function getRightMostAssignedExpression(node) { + while (isAssignmentExpression(node, /*excludeCompoundAssignments*/ true)) { + node = node.right; + } + return node; + } + ts.getRightMostAssignedExpression = getRightMostAssignedExpression; + function isExportsIdentifier(node) { + return ts.isIdentifier(node) && node.escapedText === "exports"; + } + ts.isExportsIdentifier = isExportsIdentifier; + function isModuleIdentifier(node) { + return ts.isIdentifier(node) && node.escapedText === "module"; + } + ts.isModuleIdentifier = isModuleIdentifier; + function isModuleExportsAccessExpression(node) { + return (ts.isPropertyAccessExpression(node) || isLiteralLikeElementAccess(node)) + && isModuleIdentifier(node.expression) + && getElementOrPropertyAccessName(node) === "exports"; + } + ts.isModuleExportsAccessExpression = isModuleExportsAccessExpression; + /// Given a BinaryExpression, returns SpecialPropertyAssignmentKind for the various kinds of property + /// assignments we treat as special in the binder + function getAssignmentDeclarationKind(expr) { + var special = getAssignmentDeclarationKindWorker(expr); + return special === 5 /* Property */ || isInJSFile(expr) ? special : 0 /* None */; + } + ts.getAssignmentDeclarationKind = getAssignmentDeclarationKind; + function isBindableObjectDefinePropertyCall(expr) { + return ts.length(expr.arguments) === 3 && + ts.isPropertyAccessExpression(expr.expression) && + ts.isIdentifier(expr.expression.expression) && + ts.idText(expr.expression.expression) === "Object" && + ts.idText(expr.expression.name) === "defineProperty" && + isStringOrNumericLiteralLike(expr.arguments[1]) && + isBindableStaticNameExpression(expr.arguments[0], /*excludeThisKeyword*/ true); + } + ts.isBindableObjectDefinePropertyCall = isBindableObjectDefinePropertyCall; + /** x.y OR x[0] */ + function isLiteralLikeAccess(node) { + return ts.isPropertyAccessExpression(node) || isLiteralLikeElementAccess(node); + } + ts.isLiteralLikeAccess = isLiteralLikeAccess; + /** x[0] OR x['a'] OR x[Symbol.y] */ + function isLiteralLikeElementAccess(node) { + return ts.isElementAccessExpression(node) && (isStringOrNumericLiteralLike(node.argumentExpression) || + isWellKnownSymbolSyntactically(node.argumentExpression)); + } + ts.isLiteralLikeElementAccess = isLiteralLikeElementAccess; + /** Any series of property and element accesses. */ + function isBindableStaticAccessExpression(node, excludeThisKeyword) { + return ts.isPropertyAccessExpression(node) && (!excludeThisKeyword && node.expression.kind === 104 /* ThisKeyword */ || ts.isIdentifier(node.name) && isBindableStaticNameExpression(node.expression, /*excludeThisKeyword*/ true)) + || isBindableStaticElementAccessExpression(node, excludeThisKeyword); + } + ts.isBindableStaticAccessExpression = isBindableStaticAccessExpression; + /** Any series of property and element accesses, ending in a literal element access */ + function isBindableStaticElementAccessExpression(node, excludeThisKeyword) { + return isLiteralLikeElementAccess(node) + && ((!excludeThisKeyword && node.expression.kind === 104 /* ThisKeyword */) || + isEntityNameExpression(node.expression) || + isBindableStaticAccessExpression(node.expression, /*excludeThisKeyword*/ true)); + } + ts.isBindableStaticElementAccessExpression = isBindableStaticElementAccessExpression; + function isBindableStaticNameExpression(node, excludeThisKeyword) { + return isEntityNameExpression(node) || isBindableStaticAccessExpression(node, excludeThisKeyword); + } + ts.isBindableStaticNameExpression = isBindableStaticNameExpression; + function getNameOrArgument(expr) { + if (ts.isPropertyAccessExpression(expr)) { + return expr.name; + } + return expr.argumentExpression; + } + ts.getNameOrArgument = getNameOrArgument; + function getAssignmentDeclarationKindWorker(expr) { + if (ts.isCallExpression(expr)) { + if (!isBindableObjectDefinePropertyCall(expr)) { + return 0 /* None */; + } + var entityName = expr.arguments[0]; + if (isExportsIdentifier(entityName) || isModuleExportsAccessExpression(entityName)) { + return 8 /* ObjectDefinePropertyExports */; + } + if (isBindableStaticAccessExpression(entityName) && getElementOrPropertyAccessName(entityName) === "prototype") { + return 9 /* ObjectDefinePrototypeProperty */; + } + return 7 /* ObjectDefinePropertyValue */; + } + if (expr.operatorToken.kind !== 62 /* EqualsToken */ || !isAccessExpression(expr.left)) { + return 0 /* None */; + } + if (isBindableStaticNameExpression(expr.left.expression, /*excludeThisKeyword*/ true) && getElementOrPropertyAccessName(expr.left) === "prototype" && ts.isObjectLiteralExpression(getInitializerOfBinaryExpression(expr))) { + // F.prototype = { ... } + return 6 /* Prototype */; + } + return getAssignmentDeclarationPropertyAccessKind(expr.left); + } + /** + * Does not handle signed numeric names like `a[+0]` - handling those would require handling prefix unary expressions + * throughout late binding handling as well, which is awkward (but ultimately probably doable if there is demand) + */ + /* @internal */ + function getElementOrPropertyAccessArgumentExpressionOrName(node) { + if (ts.isPropertyAccessExpression(node)) { + return node.name; + } + var arg = skipParentheses(node.argumentExpression); + if (ts.isNumericLiteral(arg) || ts.isStringLiteralLike(arg)) { + return arg; + } + return node; + } + ts.getElementOrPropertyAccessArgumentExpressionOrName = getElementOrPropertyAccessArgumentExpressionOrName; + function getElementOrPropertyAccessName(node) { + var name = getElementOrPropertyAccessArgumentExpressionOrName(node); + if (name) { + if (ts.isIdentifier(name)) { + return name.escapedText; + } + if (ts.isStringLiteralLike(name) || ts.isNumericLiteral(name)) { + return ts.escapeLeadingUnderscores(name.text); + } + } + if (ts.isElementAccessExpression(node) && isWellKnownSymbolSyntactically(node.argumentExpression)) { + return getPropertyNameForKnownSymbolName(ts.idText(node.argumentExpression.name)); + } + return undefined; + } + ts.getElementOrPropertyAccessName = getElementOrPropertyAccessName; + function getAssignmentDeclarationPropertyAccessKind(lhs) { + if (lhs.expression.kind === 104 /* ThisKeyword */) { + return 4 /* ThisProperty */; + } + else if (isModuleExportsAccessExpression(lhs)) { + // module.exports = expr + return 2 /* ModuleExports */; + } + else if (isBindableStaticNameExpression(lhs.expression, /*excludeThisKeyword*/ true)) { + if (isPrototypeAccess(lhs.expression)) { + // F.G....prototype.x = expr + return 3 /* PrototypeProperty */; + } + var nextToLast = lhs; + while (!ts.isIdentifier(nextToLast.expression)) { + nextToLast = nextToLast.expression; + } + var id = nextToLast.expression; + if ((id.escapedText === "exports" || + id.escapedText === "module" && getElementOrPropertyAccessName(nextToLast) === "exports") && + // ExportsProperty does not support binding with computed names + isBindableStaticAccessExpression(lhs)) { + // exports.name = expr OR module.exports.name = expr OR exports["name"] = expr ... + return 1 /* ExportsProperty */; + } + if (isBindableStaticNameExpression(lhs, /*excludeThisKeyword*/ true) || (ts.isElementAccessExpression(lhs) && isDynamicName(lhs))) { + // F.G...x = expr + return 5 /* Property */; + } + } + return 0 /* None */; + } + ts.getAssignmentDeclarationPropertyAccessKind = getAssignmentDeclarationPropertyAccessKind; + function getInitializerOfBinaryExpression(expr) { + while (ts.isBinaryExpression(expr.right)) { + expr = expr.right; + } + return expr.right; + } + ts.getInitializerOfBinaryExpression = getInitializerOfBinaryExpression; + function isPrototypePropertyAssignment(node) { + return ts.isBinaryExpression(node) && getAssignmentDeclarationKind(node) === 3 /* PrototypeProperty */; + } + ts.isPrototypePropertyAssignment = isPrototypePropertyAssignment; + function isSpecialPropertyDeclaration(expr) { + return isInJSFile(expr) && + expr.parent && expr.parent.kind === 226 /* ExpressionStatement */ && + (!ts.isElementAccessExpression(expr) || isLiteralLikeElementAccess(expr)) && + !!ts.getJSDocTypeTag(expr.parent); + } + ts.isSpecialPropertyDeclaration = isSpecialPropertyDeclaration; + function setValueDeclaration(symbol, node) { + var valueDeclaration = symbol.valueDeclaration; + if (!valueDeclaration || + !(node.flags & 8388608 /* Ambient */ && !(valueDeclaration.flags & 8388608 /* Ambient */)) && + (isAssignmentDeclaration(valueDeclaration) && !isAssignmentDeclaration(node)) || + (valueDeclaration.kind !== node.kind && isEffectiveModuleDeclaration(valueDeclaration))) { + // other kinds of value declarations take precedence over modules and assignment declarations + symbol.valueDeclaration = node; + } + } + ts.setValueDeclaration = setValueDeclaration; + function isFunctionSymbol(symbol) { + if (!symbol || !symbol.valueDeclaration) { + return false; + } + var decl = symbol.valueDeclaration; + return decl.kind === 244 /* FunctionDeclaration */ || ts.isVariableDeclaration(decl) && decl.initializer && ts.isFunctionLike(decl.initializer); + } + ts.isFunctionSymbol = isFunctionSymbol; + function importFromModuleSpecifier(node) { + return tryGetImportFromModuleSpecifier(node) || ts.Debug.failBadSyntaxKind(node.parent); + } + ts.importFromModuleSpecifier = importFromModuleSpecifier; + function tryGetImportFromModuleSpecifier(node) { + switch (node.parent.kind) { + case 254 /* ImportDeclaration */: + case 260 /* ExportDeclaration */: + return node.parent; + case 265 /* ExternalModuleReference */: + return node.parent.parent; + case 196 /* CallExpression */: + return isImportCall(node.parent) || isRequireCall(node.parent, /*checkArg*/ false) ? node.parent : undefined; + case 187 /* LiteralType */: + ts.Debug.assert(ts.isStringLiteral(node)); + return ts.tryCast(node.parent.parent, ts.isImportTypeNode); + default: + return undefined; + } + } + ts.tryGetImportFromModuleSpecifier = tryGetImportFromModuleSpecifier; + function getExternalModuleName(node) { + switch (node.kind) { + case 254 /* ImportDeclaration */: + case 260 /* ExportDeclaration */: + return node.moduleSpecifier; + case 253 /* ImportEqualsDeclaration */: + return node.moduleReference.kind === 265 /* ExternalModuleReference */ ? node.moduleReference.expression : undefined; + case 188 /* ImportType */: + return isLiteralImportTypeNode(node) ? node.argument.literal : undefined; + default: + return ts.Debug.assertNever(node); + } + } + ts.getExternalModuleName = getExternalModuleName; + function getNamespaceDeclarationNode(node) { + switch (node.kind) { + case 254 /* ImportDeclaration */: + return node.importClause && ts.tryCast(node.importClause.namedBindings, ts.isNamespaceImport); + case 253 /* ImportEqualsDeclaration */: + return node; + case 260 /* ExportDeclaration */: + return node.exportClause && ts.tryCast(node.exportClause, ts.isNamespaceExport); + default: + return ts.Debug.assertNever(node); + } + } + ts.getNamespaceDeclarationNode = getNamespaceDeclarationNode; + function isDefaultImport(node) { + return node.kind === 254 /* ImportDeclaration */ && !!node.importClause && !!node.importClause.name; + } + ts.isDefaultImport = isDefaultImport; + function forEachImportClauseDeclaration(node, action) { + if (node.name) { + var result = action(node); + if (result) + return result; + } + if (node.namedBindings) { + var result = ts.isNamespaceImport(node.namedBindings) + ? action(node.namedBindings) + : ts.forEach(node.namedBindings.elements, action); + if (result) + return result; + } + } + ts.forEachImportClauseDeclaration = forEachImportClauseDeclaration; + function hasQuestionToken(node) { + if (node) { + switch (node.kind) { + case 156 /* Parameter */: + case 161 /* MethodDeclaration */: + case 160 /* MethodSignature */: + case 282 /* ShorthandPropertyAssignment */: + case 281 /* PropertyAssignment */: + case 159 /* PropertyDeclaration */: + case 158 /* PropertySignature */: + return node.questionToken !== undefined; + } + } + return false; + } + ts.hasQuestionToken = hasQuestionToken; + function isJSDocConstructSignature(node) { + var param = ts.isJSDocFunctionType(node) ? ts.firstOrUndefined(node.parameters) : undefined; + var name = ts.tryCast(param && param.name, ts.isIdentifier); + return !!name && name.escapedText === "new"; + } + ts.isJSDocConstructSignature = isJSDocConstructSignature; + function isJSDocTypeAlias(node) { + return node.kind === 322 /* JSDocTypedefTag */ || node.kind === 315 /* JSDocCallbackTag */ || node.kind === 316 /* JSDocEnumTag */; + } + ts.isJSDocTypeAlias = isJSDocTypeAlias; + function isTypeAlias(node) { + return isJSDocTypeAlias(node) || ts.isTypeAliasDeclaration(node); + } + ts.isTypeAlias = isTypeAlias; + function getSourceOfAssignment(node) { + return ts.isExpressionStatement(node) && + ts.isBinaryExpression(node.expression) && + node.expression.operatorToken.kind === 62 /* EqualsToken */ + ? getRightMostAssignedExpression(node.expression) + : undefined; + } + function getSourceOfDefaultedAssignment(node) { + return ts.isExpressionStatement(node) && + ts.isBinaryExpression(node.expression) && + getAssignmentDeclarationKind(node.expression) !== 0 /* None */ && + ts.isBinaryExpression(node.expression.right) && + (node.expression.right.operatorToken.kind === 56 /* BarBarToken */ || node.expression.right.operatorToken.kind === 60 /* QuestionQuestionToken */) + ? node.expression.right.right + : undefined; + } + function getSingleInitializerOfVariableStatementOrPropertyDeclaration(node) { + switch (node.kind) { + case 225 /* VariableStatement */: + var v = getSingleVariableOfVariableStatement(node); + return v && v.initializer; + case 159 /* PropertyDeclaration */: + return node.initializer; + case 281 /* PropertyAssignment */: + return node.initializer; + } + } + ts.getSingleInitializerOfVariableStatementOrPropertyDeclaration = getSingleInitializerOfVariableStatementOrPropertyDeclaration; + function getSingleVariableOfVariableStatement(node) { + return ts.isVariableStatement(node) ? ts.firstOrUndefined(node.declarationList.declarations) : undefined; + } + function getNestedModuleDeclaration(node) { + return ts.isModuleDeclaration(node) && + node.body && + node.body.kind === 249 /* ModuleDeclaration */ + ? node.body + : undefined; + } + function getJSDocCommentsAndTags(hostNode) { + var result; + // Pull parameter comments from declaring function as well + if (isVariableLike(hostNode) && ts.hasInitializer(hostNode) && ts.hasJSDocNodes(hostNode.initializer)) { + result = ts.append(result, ts.last(hostNode.initializer.jsDoc)); + } + var node = hostNode; + while (node && node.parent) { + if (ts.hasJSDocNodes(node)) { + result = ts.append(result, ts.last(node.jsDoc)); + } + if (node.kind === 156 /* Parameter */) { + result = ts.addRange(result, ts.getJSDocParameterTags(node)); + break; + } + if (node.kind === 155 /* TypeParameter */) { + result = ts.addRange(result, ts.getJSDocTypeParameterTags(node)); + break; + } + node = getNextJSDocCommentLocation(node); + } + return result || ts.emptyArray; + } + ts.getJSDocCommentsAndTags = getJSDocCommentsAndTags; + function getNextJSDocCommentLocation(node) { + var parent = node.parent; + if (parent.kind === 281 /* PropertyAssignment */ || + parent.kind === 259 /* ExportAssignment */ || + parent.kind === 159 /* PropertyDeclaration */ || + parent.kind === 226 /* ExpressionStatement */ && node.kind === 194 /* PropertyAccessExpression */ || + getNestedModuleDeclaration(parent) || + ts.isBinaryExpression(node) && node.operatorToken.kind === 62 /* EqualsToken */) { + return parent; + } + // Try to recognize this pattern when node is initializer of variable declaration and JSDoc comments are on containing variable statement. + // /** + // * @param {number} name + // * @returns {number} + // */ + // var x = function(name) { return name.length; } + else if (parent.parent && + (getSingleVariableOfVariableStatement(parent.parent) === node || + ts.isBinaryExpression(parent) && parent.operatorToken.kind === 62 /* EqualsToken */)) { + return parent.parent; + } + else if (parent.parent && parent.parent.parent && + (getSingleVariableOfVariableStatement(parent.parent.parent) || + getSingleInitializerOfVariableStatementOrPropertyDeclaration(parent.parent.parent) === node || + getSourceOfDefaultedAssignment(parent.parent.parent))) { + return parent.parent.parent; + } + } + /** Does the opposite of `getJSDocParameterTags`: given a JSDoc parameter, finds the parameter corresponding to it. */ + function getParameterSymbolFromJSDoc(node) { + if (node.symbol) { + return node.symbol; + } + if (!ts.isIdentifier(node.name)) { + return undefined; + } + var name = node.name.escapedText; + var decl = getHostSignatureFromJSDoc(node); + if (!decl) { + return undefined; + } + var parameter = ts.find(decl.parameters, function (p) { return p.name.kind === 75 /* Identifier */ && p.name.escapedText === name; }); + return parameter && parameter.symbol; + } + ts.getParameterSymbolFromJSDoc = getParameterSymbolFromJSDoc; + function getHostSignatureFromJSDoc(node) { + var host = getEffectiveJSDocHost(node); + return host && ts.isFunctionLike(host) ? host : undefined; + } + ts.getHostSignatureFromJSDoc = getHostSignatureFromJSDoc; + function getEffectiveJSDocHost(node) { + var host = getJSDocHost(node); + var decl = getSourceOfDefaultedAssignment(host) || + getSourceOfAssignment(host) || + getSingleInitializerOfVariableStatementOrPropertyDeclaration(host) || + getSingleVariableOfVariableStatement(host) || + getNestedModuleDeclaration(host) || + host; + return decl; + } + ts.getEffectiveJSDocHost = getEffectiveJSDocHost; + /** Use getEffectiveJSDocHost if you additionally need to look for jsdoc on parent nodes, like assignments. */ + function getJSDocHost(node) { + return ts.Debug.checkDefined(findAncestor(node.parent, ts.isJSDoc)).parent; + } + ts.getJSDocHost = getJSDocHost; + function getTypeParameterFromJsDoc(node) { + var name = node.name.escapedText; + var typeParameters = node.parent.parent.parent.typeParameters; + return typeParameters && ts.find(typeParameters, function (p) { return p.name.escapedText === name; }); + } + ts.getTypeParameterFromJsDoc = getTypeParameterFromJsDoc; + function hasRestParameter(s) { + var last = ts.lastOrUndefined(s.parameters); + return !!last && isRestParameter(last); + } + ts.hasRestParameter = hasRestParameter; + function isRestParameter(node) { + var type = ts.isJSDocParameterTag(node) ? (node.typeExpression && node.typeExpression.type) : node.type; + return node.dotDotDotToken !== undefined || !!type && type.kind === 301 /* JSDocVariadicType */; + } + ts.isRestParameter = isRestParameter; + function hasTypeArguments(node) { + return !!node.typeArguments; + } + ts.hasTypeArguments = hasTypeArguments; + var AssignmentKind; + (function (AssignmentKind) { + AssignmentKind[AssignmentKind["None"] = 0] = "None"; + AssignmentKind[AssignmentKind["Definite"] = 1] = "Definite"; + AssignmentKind[AssignmentKind["Compound"] = 2] = "Compound"; + })(AssignmentKind = ts.AssignmentKind || (ts.AssignmentKind = {})); + function getAssignmentTargetKind(node) { + var parent = node.parent; + while (true) { + switch (parent.kind) { + case 209 /* BinaryExpression */: + var binaryOperator = parent.operatorToken.kind; + return isAssignmentOperator(binaryOperator) && parent.left === node ? + binaryOperator === 62 /* EqualsToken */ ? 1 /* Definite */ : 2 /* Compound */ : + 0 /* None */; + case 207 /* PrefixUnaryExpression */: + case 208 /* PostfixUnaryExpression */: + var unaryOperator = parent.operator; + return unaryOperator === 45 /* PlusPlusToken */ || unaryOperator === 46 /* MinusMinusToken */ ? 2 /* Compound */ : 0 /* None */; + case 231 /* ForInStatement */: + case 232 /* ForOfStatement */: + return parent.initializer === node ? 1 /* Definite */ : 0 /* None */; + case 200 /* ParenthesizedExpression */: + case 192 /* ArrayLiteralExpression */: + case 213 /* SpreadElement */: + case 218 /* NonNullExpression */: + node = parent; + break; + case 282 /* ShorthandPropertyAssignment */: + if (parent.name !== node) { + return 0 /* None */; + } + node = parent.parent; + break; + case 281 /* PropertyAssignment */: + if (parent.name === node) { + return 0 /* None */; + } + node = parent.parent; + break; + default: + return 0 /* None */; + } + parent = node.parent; + } + } + ts.getAssignmentTargetKind = getAssignmentTargetKind; + // A node is an assignment target if it is on the left hand side of an '=' token, if it is parented by a property + // assignment in an object literal that is an assignment target, or if it is parented by an array literal that is + // an assignment target. Examples include 'a = xxx', '{ p: a } = xxx', '[{ a }] = xxx'. + // (Note that `p` is not a target in the above examples, only `a`.) + function isAssignmentTarget(node) { + return getAssignmentTargetKind(node) !== 0 /* None */; + } + ts.isAssignmentTarget = isAssignmentTarget; + /** + * Indicates whether a node could contain a `var` VariableDeclarationList that contributes to + * the same `var` declaration scope as the node's parent. + */ + function isNodeWithPossibleHoistedDeclaration(node) { + switch (node.kind) { + case 223 /* Block */: + case 225 /* VariableStatement */: + case 236 /* WithStatement */: + case 227 /* IfStatement */: + case 237 /* SwitchStatement */: + case 251 /* CaseBlock */: + case 277 /* CaseClause */: + case 278 /* DefaultClause */: + case 238 /* LabeledStatement */: + case 230 /* ForStatement */: + case 231 /* ForInStatement */: + case 232 /* ForOfStatement */: + case 228 /* DoStatement */: + case 229 /* WhileStatement */: + case 240 /* TryStatement */: + case 280 /* CatchClause */: + return true; + } + return false; + } + ts.isNodeWithPossibleHoistedDeclaration = isNodeWithPossibleHoistedDeclaration; + function isValueSignatureDeclaration(node) { + return ts.isFunctionExpression(node) || ts.isArrowFunction(node) || ts.isMethodOrAccessor(node) || ts.isFunctionDeclaration(node) || ts.isConstructorDeclaration(node); + } + ts.isValueSignatureDeclaration = isValueSignatureDeclaration; + function walkUp(node, kind) { + while (node && node.kind === kind) { + node = node.parent; + } + return node; + } + function walkUpParenthesizedTypes(node) { + return walkUp(node, 182 /* ParenthesizedType */); + } + ts.walkUpParenthesizedTypes = walkUpParenthesizedTypes; + function walkUpParenthesizedExpressions(node) { + return walkUp(node, 200 /* ParenthesizedExpression */); + } + ts.walkUpParenthesizedExpressions = walkUpParenthesizedExpressions; + function skipParentheses(node) { + return ts.skipOuterExpressions(node, 1 /* Parentheses */); + } + ts.skipParentheses = skipParentheses; + function skipParenthesesUp(node) { + while (node.kind === 200 /* ParenthesizedExpression */) { + node = node.parent; + } + return node; + } + // a node is delete target iff. it is PropertyAccessExpression/ElementAccessExpression with parentheses skipped + function isDeleteTarget(node) { + if (node.kind !== 194 /* PropertyAccessExpression */ && node.kind !== 195 /* ElementAccessExpression */) { + return false; + } + node = walkUpParenthesizedExpressions(node.parent); + return node && node.kind === 203 /* DeleteExpression */; + } + ts.isDeleteTarget = isDeleteTarget; + function isNodeDescendantOf(node, ancestor) { + while (node) { + if (node === ancestor) + return true; + node = node.parent; + } + return false; + } + ts.isNodeDescendantOf = isNodeDescendantOf; + // True if `name` is the name of a declaration node + function isDeclarationName(name) { + return !ts.isSourceFile(name) && !ts.isBindingPattern(name) && ts.isDeclaration(name.parent) && name.parent.name === name; + } + ts.isDeclarationName = isDeclarationName; + // See GH#16030 + function getDeclarationFromName(name) { + var parent = name.parent; + switch (name.kind) { + case 10 /* StringLiteral */: + case 14 /* NoSubstitutionTemplateLiteral */: + case 8 /* NumericLiteral */: + if (ts.isComputedPropertyName(parent)) + return parent.parent; + // falls through + case 75 /* Identifier */: + if (ts.isDeclaration(parent)) { + return parent.name === name ? parent : undefined; + } + else if (ts.isQualifiedName(parent)) { + var tag = parent.parent; + return ts.isJSDocParameterTag(tag) && tag.name === parent ? tag : undefined; + } + else { + var binExp = parent.parent; + return ts.isBinaryExpression(binExp) && + getAssignmentDeclarationKind(binExp) !== 0 /* None */ && + (binExp.left.symbol || binExp.symbol) && + ts.getNameOfDeclaration(binExp) === name + ? binExp + : undefined; + } + case 76 /* PrivateIdentifier */: + return ts.isDeclaration(parent) && parent.name === name ? parent : undefined; + default: + return undefined; + } + } + ts.getDeclarationFromName = getDeclarationFromName; + function isLiteralComputedPropertyDeclarationName(node) { + return isStringOrNumericLiteralLike(node) && + node.parent.kind === 154 /* ComputedPropertyName */ && + ts.isDeclaration(node.parent.parent); + } + ts.isLiteralComputedPropertyDeclarationName = isLiteralComputedPropertyDeclarationName; + // Return true if the given identifier is classified as an IdentifierName + function isIdentifierName(node) { + var parent = node.parent; + switch (parent.kind) { + case 159 /* PropertyDeclaration */: + case 158 /* PropertySignature */: + case 161 /* MethodDeclaration */: + case 160 /* MethodSignature */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + case 284 /* EnumMember */: + case 281 /* PropertyAssignment */: + case 194 /* PropertyAccessExpression */: + // Name in member declaration or property name in property access + return parent.name === node; + case 153 /* QualifiedName */: + // Name on right hand side of dot in a type query or type reference + if (parent.right === node) { + while (parent.kind === 153 /* QualifiedName */) { + parent = parent.parent; + } + return parent.kind === 172 /* TypeQuery */ || parent.kind === 169 /* TypeReference */; + } + return false; + case 191 /* BindingElement */: + case 258 /* ImportSpecifier */: + // Property name in binding element or import specifier + return parent.propertyName === node; + case 263 /* ExportSpecifier */: + case 273 /* JsxAttribute */: + // Any name in an export specifier or JSX Attribute + return true; + } + return false; + } + ts.isIdentifierName = isIdentifierName; + // An alias symbol is created by one of the following declarations: + // import = ... + // import from ... + // import * as from ... + // import { x as } from ... + // export { x as } from ... + // export * as ns from ... + // export = + // export default + // module.exports = + // {} + // {name: } + function isAliasSymbolDeclaration(node) { + return node.kind === 253 /* ImportEqualsDeclaration */ || + node.kind === 252 /* NamespaceExportDeclaration */ || + node.kind === 255 /* ImportClause */ && !!node.name || + node.kind === 256 /* NamespaceImport */ || + node.kind === 262 /* NamespaceExport */ || + node.kind === 258 /* ImportSpecifier */ || + node.kind === 263 /* ExportSpecifier */ || + node.kind === 259 /* ExportAssignment */ && exportAssignmentIsAlias(node) || + ts.isBinaryExpression(node) && getAssignmentDeclarationKind(node) === 2 /* ModuleExports */ && exportAssignmentIsAlias(node) || + ts.isPropertyAccessExpression(node) && ts.isBinaryExpression(node.parent) && node.parent.left === node && node.parent.operatorToken.kind === 62 /* EqualsToken */ && isAliasableExpression(node.parent.right) || + node.kind === 282 /* ShorthandPropertyAssignment */ || + node.kind === 281 /* PropertyAssignment */ && isAliasableExpression(node.initializer); + } + ts.isAliasSymbolDeclaration = isAliasSymbolDeclaration; + function getAliasDeclarationFromName(node) { + switch (node.parent.kind) { + case 255 /* ImportClause */: + case 258 /* ImportSpecifier */: + case 256 /* NamespaceImport */: + case 263 /* ExportSpecifier */: + case 259 /* ExportAssignment */: + case 253 /* ImportEqualsDeclaration */: + return node.parent; + case 153 /* QualifiedName */: + do { + node = node.parent; + } while (node.parent.kind === 153 /* QualifiedName */); + return getAliasDeclarationFromName(node); + } + } + ts.getAliasDeclarationFromName = getAliasDeclarationFromName; + function isAliasableExpression(e) { + return isEntityNameExpression(e) || ts.isClassExpression(e); + } + ts.isAliasableExpression = isAliasableExpression; + function exportAssignmentIsAlias(node) { + var e = getExportAssignmentExpression(node); + return isAliasableExpression(e); + } + ts.exportAssignmentIsAlias = exportAssignmentIsAlias; + function getExportAssignmentExpression(node) { + return ts.isExportAssignment(node) ? node.expression : node.right; + } + ts.getExportAssignmentExpression = getExportAssignmentExpression; + function getPropertyAssignmentAliasLikeExpression(node) { + return node.kind === 282 /* ShorthandPropertyAssignment */ ? node.name : node.kind === 281 /* PropertyAssignment */ ? node.initializer : + node.parent.right; + } + ts.getPropertyAssignmentAliasLikeExpression = getPropertyAssignmentAliasLikeExpression; + function getEffectiveBaseTypeNode(node) { + var baseType = getClassExtendsHeritageElement(node); + if (baseType && isInJSFile(node)) { + // Prefer an @augments tag because it may have type parameters. + var tag = ts.getJSDocAugmentsTag(node); + if (tag) { + return tag.class; + } + } + return baseType; + } + ts.getEffectiveBaseTypeNode = getEffectiveBaseTypeNode; + function getClassExtendsHeritageElement(node) { + var heritageClause = getHeritageClause(node.heritageClauses, 90 /* ExtendsKeyword */); + return heritageClause && heritageClause.types.length > 0 ? heritageClause.types[0] : undefined; + } + ts.getClassExtendsHeritageElement = getClassExtendsHeritageElement; + function getEffectiveImplementsTypeNodes(node) { + if (isInJSFile(node)) { + return ts.getJSDocImplementsTags(node).map(function (n) { return n.class; }); + } + else { + var heritageClause = getHeritageClause(node.heritageClauses, 113 /* ImplementsKeyword */); + return heritageClause === null || heritageClause === void 0 ? void 0 : heritageClause.types; + } + } + ts.getEffectiveImplementsTypeNodes = getEffectiveImplementsTypeNodes; + /** Returns the node in an `extends` or `implements` clause of a class or interface. */ + function getAllSuperTypeNodes(node) { + return ts.isInterfaceDeclaration(node) ? getInterfaceBaseTypeNodes(node) || ts.emptyArray : + ts.isClassLike(node) ? ts.concatenate(ts.singleElementArray(getEffectiveBaseTypeNode(node)), getEffectiveImplementsTypeNodes(node)) || ts.emptyArray : + ts.emptyArray; + } + ts.getAllSuperTypeNodes = getAllSuperTypeNodes; + function getInterfaceBaseTypeNodes(node) { + var heritageClause = getHeritageClause(node.heritageClauses, 90 /* ExtendsKeyword */); + return heritageClause ? heritageClause.types : undefined; + } + ts.getInterfaceBaseTypeNodes = getInterfaceBaseTypeNodes; + function getHeritageClause(clauses, kind) { + if (clauses) { + for (var _i = 0, clauses_1 = clauses; _i < clauses_1.length; _i++) { + var clause = clauses_1[_i]; + if (clause.token === kind) { + return clause; + } + } + } + return undefined; + } + ts.getHeritageClause = getHeritageClause; + function getAncestor(node, kind) { + while (node) { + if (node.kind === kind) { + return node; + } + node = node.parent; + } + return undefined; + } + ts.getAncestor = getAncestor; + function isKeyword(token) { + return 77 /* FirstKeyword */ <= token && token <= 152 /* LastKeyword */; + } + ts.isKeyword = isKeyword; + function isContextualKeyword(token) { + return 122 /* FirstContextualKeyword */ <= token && token <= 152 /* LastContextualKeyword */; + } + ts.isContextualKeyword = isContextualKeyword; + function isNonContextualKeyword(token) { + return isKeyword(token) && !isContextualKeyword(token); + } + ts.isNonContextualKeyword = isNonContextualKeyword; + function isFutureReservedKeyword(token) { + return 113 /* FirstFutureReservedWord */ <= token && token <= 121 /* LastFutureReservedWord */; + } + ts.isFutureReservedKeyword = isFutureReservedKeyword; + function isStringANonContextualKeyword(name) { + var token = ts.stringToToken(name); + return token !== undefined && isNonContextualKeyword(token); + } + ts.isStringANonContextualKeyword = isStringANonContextualKeyword; + function isStringAKeyword(name) { + var token = ts.stringToToken(name); + return token !== undefined && isKeyword(token); + } + ts.isStringAKeyword = isStringAKeyword; + function isIdentifierANonContextualKeyword(_a) { + var originalKeywordKind = _a.originalKeywordKind; + return !!originalKeywordKind && !isContextualKeyword(originalKeywordKind); + } + ts.isIdentifierANonContextualKeyword = isIdentifierANonContextualKeyword; + function isTrivia(token) { + return 2 /* FirstTriviaToken */ <= token && token <= 7 /* LastTriviaToken */; + } + ts.isTrivia = isTrivia; + var FunctionFlags; + (function (FunctionFlags) { + FunctionFlags[FunctionFlags["Normal"] = 0] = "Normal"; + FunctionFlags[FunctionFlags["Generator"] = 1] = "Generator"; + FunctionFlags[FunctionFlags["Async"] = 2] = "Async"; + FunctionFlags[FunctionFlags["Invalid"] = 4] = "Invalid"; + FunctionFlags[FunctionFlags["AsyncGenerator"] = 3] = "AsyncGenerator"; + })(FunctionFlags = ts.FunctionFlags || (ts.FunctionFlags = {})); + function getFunctionFlags(node) { + if (!node) { + return 4 /* Invalid */; + } + var flags = 0 /* Normal */; + switch (node.kind) { + case 244 /* FunctionDeclaration */: + case 201 /* FunctionExpression */: + case 161 /* MethodDeclaration */: + if (node.asteriskToken) { + flags |= 1 /* Generator */; + } + // falls through + case 202 /* ArrowFunction */: + if (hasModifier(node, 256 /* Async */)) { + flags |= 2 /* Async */; + } + break; + } + if (!node.body) { + flags |= 4 /* Invalid */; + } + return flags; + } + ts.getFunctionFlags = getFunctionFlags; + function isAsyncFunction(node) { + switch (node.kind) { + case 244 /* FunctionDeclaration */: + case 201 /* FunctionExpression */: + case 202 /* ArrowFunction */: + case 161 /* MethodDeclaration */: + return node.body !== undefined + && node.asteriskToken === undefined + && hasModifier(node, 256 /* Async */); + } + return false; + } + ts.isAsyncFunction = isAsyncFunction; + function isStringOrNumericLiteralLike(node) { + return ts.isStringLiteralLike(node) || ts.isNumericLiteral(node); + } + ts.isStringOrNumericLiteralLike = isStringOrNumericLiteralLike; + function isSignedNumericLiteral(node) { + return ts.isPrefixUnaryExpression(node) && (node.operator === 39 /* PlusToken */ || node.operator === 40 /* MinusToken */) && ts.isNumericLiteral(node.operand); + } + ts.isSignedNumericLiteral = isSignedNumericLiteral; + /** + * A declaration has a dynamic name if all of the following are true: + * 1. The declaration has a computed property name. + * 2. The computed name is *not* expressed as a StringLiteral. + * 3. The computed name is *not* expressed as a NumericLiteral. + * 4. The computed name is *not* expressed as a PlusToken or MinusToken + * immediately followed by a NumericLiteral. + * 5. The computed name is *not* expressed as `Symbol.`, where `` + * is a property of the Symbol constructor that denotes a built-in + * Symbol. + */ + function hasDynamicName(declaration) { + var name = ts.getNameOfDeclaration(declaration); + return !!name && isDynamicName(name); + } + ts.hasDynamicName = hasDynamicName; + function isDynamicName(name) { + if (!(name.kind === 154 /* ComputedPropertyName */ || name.kind === 195 /* ElementAccessExpression */)) { + return false; + } + var expr = ts.isElementAccessExpression(name) ? skipParentheses(name.argumentExpression) : name.expression; + return !isStringOrNumericLiteralLike(expr) && + !isSignedNumericLiteral(expr) && + !isWellKnownSymbolSyntactically(expr); + } + ts.isDynamicName = isDynamicName; + /** + * Checks if the expression is of the form: + * Symbol.name + * where Symbol is literally the word "Symbol", and name is any identifierName + */ + function isWellKnownSymbolSyntactically(node) { + return ts.isPropertyAccessExpression(node) && isESSymbolIdentifier(node.expression); + } + ts.isWellKnownSymbolSyntactically = isWellKnownSymbolSyntactically; + function getPropertyNameForPropertyNameNode(name) { + switch (name.kind) { + case 75 /* Identifier */: + case 76 /* PrivateIdentifier */: + return name.escapedText; + case 10 /* StringLiteral */: + case 8 /* NumericLiteral */: + return ts.escapeLeadingUnderscores(name.text); + case 154 /* ComputedPropertyName */: + var nameExpression = name.expression; + if (isWellKnownSymbolSyntactically(nameExpression)) { + return getPropertyNameForKnownSymbolName(ts.idText(nameExpression.name)); + } + else if (isStringOrNumericLiteralLike(nameExpression)) { + return ts.escapeLeadingUnderscores(nameExpression.text); + } + return undefined; + default: + return ts.Debug.assertNever(name); + } + } + ts.getPropertyNameForPropertyNameNode = getPropertyNameForPropertyNameNode; + function isPropertyNameLiteral(node) { + switch (node.kind) { + case 75 /* Identifier */: + case 10 /* StringLiteral */: + case 14 /* NoSubstitutionTemplateLiteral */: + case 8 /* NumericLiteral */: + return true; + default: + return false; + } + } + ts.isPropertyNameLiteral = isPropertyNameLiteral; + function getTextOfIdentifierOrLiteral(node) { + return ts.isIdentifierOrPrivateIdentifier(node) ? ts.idText(node) : node.text; + } + ts.getTextOfIdentifierOrLiteral = getTextOfIdentifierOrLiteral; + function getEscapedTextOfIdentifierOrLiteral(node) { + return ts.isIdentifierOrPrivateIdentifier(node) ? node.escapedText : ts.escapeLeadingUnderscores(node.text); + } + ts.getEscapedTextOfIdentifierOrLiteral = getEscapedTextOfIdentifierOrLiteral; + function getPropertyNameForUniqueESSymbol(symbol) { + return "__@" + ts.getSymbolId(symbol) + "@" + symbol.escapedName; + } + ts.getPropertyNameForUniqueESSymbol = getPropertyNameForUniqueESSymbol; + function getPropertyNameForKnownSymbolName(symbolName) { + return "__@" + symbolName; + } + ts.getPropertyNameForKnownSymbolName = getPropertyNameForKnownSymbolName; + function getSymbolNameForPrivateIdentifier(containingClassSymbol, description) { + return "__#" + ts.getSymbolId(containingClassSymbol) + "@" + description; + } + ts.getSymbolNameForPrivateIdentifier = getSymbolNameForPrivateIdentifier; + function isKnownSymbol(symbol) { + return ts.startsWith(symbol.escapedName, "__@"); + } + ts.isKnownSymbol = isKnownSymbol; + /** + * Includes the word "Symbol" with unicode escapes + */ + function isESSymbolIdentifier(node) { + return node.kind === 75 /* Identifier */ && node.escapedText === "Symbol"; + } + ts.isESSymbolIdentifier = isESSymbolIdentifier; + function isPushOrUnshiftIdentifier(node) { + return node.escapedText === "push" || node.escapedText === "unshift"; + } + ts.isPushOrUnshiftIdentifier = isPushOrUnshiftIdentifier; + function isParameterDeclaration(node) { + var root = getRootDeclaration(node); + return root.kind === 156 /* Parameter */; + } + ts.isParameterDeclaration = isParameterDeclaration; + function getRootDeclaration(node) { + while (node.kind === 191 /* BindingElement */) { + node = node.parent.parent; + } + return node; + } + ts.getRootDeclaration = getRootDeclaration; + function nodeStartsNewLexicalEnvironment(node) { + var kind = node.kind; + return kind === 162 /* Constructor */ + || kind === 201 /* FunctionExpression */ + || kind === 244 /* FunctionDeclaration */ + || kind === 202 /* ArrowFunction */ + || kind === 161 /* MethodDeclaration */ + || kind === 163 /* GetAccessor */ + || kind === 164 /* SetAccessor */ + || kind === 249 /* ModuleDeclaration */ + || kind === 290 /* SourceFile */; + } + ts.nodeStartsNewLexicalEnvironment = nodeStartsNewLexicalEnvironment; + function nodeIsSynthesized(range) { + return positionIsSynthesized(range.pos) + || positionIsSynthesized(range.end); + } + ts.nodeIsSynthesized = nodeIsSynthesized; + function getOriginalSourceFile(sourceFile) { + return ts.getParseTreeNode(sourceFile, ts.isSourceFile) || sourceFile; + } + ts.getOriginalSourceFile = getOriginalSourceFile; + var Associativity; + (function (Associativity) { + Associativity[Associativity["Left"] = 0] = "Left"; + Associativity[Associativity["Right"] = 1] = "Right"; + })(Associativity = ts.Associativity || (ts.Associativity = {})); + function getExpressionAssociativity(expression) { + var operator = getOperator(expression); + var hasArguments = expression.kind === 197 /* NewExpression */ && expression.arguments !== undefined; + return getOperatorAssociativity(expression.kind, operator, hasArguments); + } + ts.getExpressionAssociativity = getExpressionAssociativity; + function getOperatorAssociativity(kind, operator, hasArguments) { + switch (kind) { + case 197 /* NewExpression */: + return hasArguments ? 0 /* Left */ : 1 /* Right */; + case 207 /* PrefixUnaryExpression */: + case 204 /* TypeOfExpression */: + case 205 /* VoidExpression */: + case 203 /* DeleteExpression */: + case 206 /* AwaitExpression */: + case 210 /* ConditionalExpression */: + case 212 /* YieldExpression */: + return 1 /* Right */; + case 209 /* BinaryExpression */: + switch (operator) { + case 42 /* AsteriskAsteriskToken */: + case 62 /* EqualsToken */: + case 63 /* PlusEqualsToken */: + case 64 /* MinusEqualsToken */: + case 66 /* AsteriskAsteriskEqualsToken */: + case 65 /* AsteriskEqualsToken */: + case 67 /* SlashEqualsToken */: + case 68 /* PercentEqualsToken */: + case 69 /* LessThanLessThanEqualsToken */: + case 70 /* GreaterThanGreaterThanEqualsToken */: + case 71 /* GreaterThanGreaterThanGreaterThanEqualsToken */: + case 72 /* AmpersandEqualsToken */: + case 74 /* CaretEqualsToken */: + case 73 /* BarEqualsToken */: + return 1 /* Right */; + } + } + return 0 /* Left */; + } + ts.getOperatorAssociativity = getOperatorAssociativity; + function getExpressionPrecedence(expression) { + var operator = getOperator(expression); + var hasArguments = expression.kind === 197 /* NewExpression */ && expression.arguments !== undefined; + return getOperatorPrecedence(expression.kind, operator, hasArguments); + } + ts.getExpressionPrecedence = getExpressionPrecedence; + function getOperator(expression) { + if (expression.kind === 209 /* BinaryExpression */) { + return expression.operatorToken.kind; + } + else if (expression.kind === 207 /* PrefixUnaryExpression */ || expression.kind === 208 /* PostfixUnaryExpression */) { + return expression.operator; + } + else { + return expression.kind; + } + } + ts.getOperator = getOperator; + function getOperatorPrecedence(nodeKind, operatorKind, hasArguments) { + switch (nodeKind) { + case 327 /* CommaListExpression */: + return 0; + case 213 /* SpreadElement */: + return 1; + case 212 /* YieldExpression */: + return 2; + case 210 /* ConditionalExpression */: + return 4; + case 209 /* BinaryExpression */: + switch (operatorKind) { + case 27 /* CommaToken */: + return 0; + case 62 /* EqualsToken */: + case 63 /* PlusEqualsToken */: + case 64 /* MinusEqualsToken */: + case 66 /* AsteriskAsteriskEqualsToken */: + case 65 /* AsteriskEqualsToken */: + case 67 /* SlashEqualsToken */: + case 68 /* PercentEqualsToken */: + case 69 /* LessThanLessThanEqualsToken */: + case 70 /* GreaterThanGreaterThanEqualsToken */: + case 71 /* GreaterThanGreaterThanGreaterThanEqualsToken */: + case 72 /* AmpersandEqualsToken */: + case 74 /* CaretEqualsToken */: + case 73 /* BarEqualsToken */: + return 3; + default: + return getBinaryOperatorPrecedence(operatorKind); + } + case 207 /* PrefixUnaryExpression */: + case 204 /* TypeOfExpression */: + case 205 /* VoidExpression */: + case 203 /* DeleteExpression */: + case 206 /* AwaitExpression */: + return 16; + case 208 /* PostfixUnaryExpression */: + return 17; + case 196 /* CallExpression */: + return 18; + case 197 /* NewExpression */: + return hasArguments ? 19 : 18; + case 198 /* TaggedTemplateExpression */: + case 194 /* PropertyAccessExpression */: + case 195 /* ElementAccessExpression */: + return 19; + case 104 /* ThisKeyword */: + case 102 /* SuperKeyword */: + case 75 /* Identifier */: + case 100 /* NullKeyword */: + case 106 /* TrueKeyword */: + case 91 /* FalseKeyword */: + case 8 /* NumericLiteral */: + case 9 /* BigIntLiteral */: + case 10 /* StringLiteral */: + case 192 /* ArrayLiteralExpression */: + case 193 /* ObjectLiteralExpression */: + case 201 /* FunctionExpression */: + case 202 /* ArrowFunction */: + case 214 /* ClassExpression */: + case 266 /* JsxElement */: + case 267 /* JsxSelfClosingElement */: + case 270 /* JsxFragment */: + case 13 /* RegularExpressionLiteral */: + case 14 /* NoSubstitutionTemplateLiteral */: + case 211 /* TemplateExpression */: + case 200 /* ParenthesizedExpression */: + case 215 /* OmittedExpression */: + return 20; + default: + return -1; + } + } + ts.getOperatorPrecedence = getOperatorPrecedence; + function getBinaryOperatorPrecedence(kind) { + switch (kind) { + case 60 /* QuestionQuestionToken */: + return 4; + case 56 /* BarBarToken */: + return 5; + case 55 /* AmpersandAmpersandToken */: + return 6; + case 51 /* BarToken */: + return 7; + case 52 /* CaretToken */: + return 8; + case 50 /* AmpersandToken */: + return 9; + case 34 /* EqualsEqualsToken */: + case 35 /* ExclamationEqualsToken */: + case 36 /* EqualsEqualsEqualsToken */: + case 37 /* ExclamationEqualsEqualsToken */: + return 10; + case 29 /* LessThanToken */: + case 31 /* GreaterThanToken */: + case 32 /* LessThanEqualsToken */: + case 33 /* GreaterThanEqualsToken */: + case 98 /* InstanceOfKeyword */: + case 97 /* InKeyword */: + case 123 /* AsKeyword */: + return 11; + case 47 /* LessThanLessThanToken */: + case 48 /* GreaterThanGreaterThanToken */: + case 49 /* GreaterThanGreaterThanGreaterThanToken */: + return 12; + case 39 /* PlusToken */: + case 40 /* MinusToken */: + return 13; + case 41 /* AsteriskToken */: + case 43 /* SlashToken */: + case 44 /* PercentToken */: + return 14; + case 42 /* AsteriskAsteriskToken */: + return 15; + } + // -1 is lower than all other precedences. Returning it will cause binary expression + // parsing to stop. + return -1; + } + ts.getBinaryOperatorPrecedence = getBinaryOperatorPrecedence; + function createDiagnosticCollection() { + var nonFileDiagnostics = []; // See GH#19873 + var filesWithDiagnostics = []; + var fileDiagnostics = ts.createMap(); + var hasReadNonFileDiagnostics = false; + return { + add: add, + lookup: lookup, + getGlobalDiagnostics: getGlobalDiagnostics, + getDiagnostics: getDiagnostics, + reattachFileDiagnostics: reattachFileDiagnostics + }; + function reattachFileDiagnostics(newFile) { + ts.forEach(fileDiagnostics.get(newFile.fileName), function (diagnostic) { return diagnostic.file = newFile; }); + } + function lookup(diagnostic) { + var diagnostics; + if (diagnostic.file) { + diagnostics = fileDiagnostics.get(diagnostic.file.fileName); + } + else { + diagnostics = nonFileDiagnostics; + } + if (!diagnostics) { + return undefined; + } + var result = ts.binarySearch(diagnostics, diagnostic, ts.identity, compareDiagnosticsSkipRelatedInformation); + if (result >= 0) { + return diagnostics[result]; + } + return undefined; + } + function add(diagnostic) { + var diagnostics; + if (diagnostic.file) { + diagnostics = fileDiagnostics.get(diagnostic.file.fileName); + if (!diagnostics) { + diagnostics = []; // See GH#19873 + fileDiagnostics.set(diagnostic.file.fileName, diagnostics); + ts.insertSorted(filesWithDiagnostics, diagnostic.file.fileName, ts.compareStringsCaseSensitive); + } + } + else { + // If we've already read the non-file diagnostics, do not modify the existing array. + if (hasReadNonFileDiagnostics) { + hasReadNonFileDiagnostics = false; + nonFileDiagnostics = nonFileDiagnostics.slice(); + } + diagnostics = nonFileDiagnostics; + } + ts.insertSorted(diagnostics, diagnostic, compareDiagnostics); + } + function getGlobalDiagnostics() { + hasReadNonFileDiagnostics = true; + return nonFileDiagnostics; + } + function getDiagnostics(fileName) { + if (fileName) { + return fileDiagnostics.get(fileName) || []; + } + var fileDiags = ts.flatMapToMutable(filesWithDiagnostics, function (f) { return fileDiagnostics.get(f); }); + if (!nonFileDiagnostics.length) { + return fileDiags; + } + fileDiags.unshift.apply(fileDiags, nonFileDiagnostics); + return fileDiags; + } + } + ts.createDiagnosticCollection = createDiagnosticCollection; + var templateSubstitutionRegExp = /\$\{/g; + function escapeTemplateSubstitution(str) { + return str.replace(templateSubstitutionRegExp, "\\${"); + } + /** @internal */ + function hasInvalidEscape(template) { + return template && !!(ts.isNoSubstitutionTemplateLiteral(template) + ? template.templateFlags + : (template.head.templateFlags || ts.some(template.templateSpans, function (span) { return !!span.literal.templateFlags; }))); + } + ts.hasInvalidEscape = hasInvalidEscape; + // This consists of the first 19 unprintable ASCII characters, canonical escapes, lineSeparator, + // paragraphSeparator, and nextLine. The latter three are just desirable to suppress new lines in + // the language service. These characters should be escaped when printing, and if any characters are added, + // the map below must be updated. Note that this regexp *does not* include the 'delete' character. + // There is no reason for this other than that JSON.stringify does not handle it either. + var doubleQuoteEscapedCharsRegExp = /[\\\"\u0000-\u001f\t\v\f\b\r\n\u2028\u2029\u0085]/g; + var singleQuoteEscapedCharsRegExp = /[\\\'\u0000-\u001f\t\v\f\b\r\n\u2028\u2029\u0085]/g; + // Template strings should be preserved as much as possible + var backtickQuoteEscapedCharsRegExp = /[\\`]/g; + var escapedCharsMap = ts.createMapFromTemplate({ + "\t": "\\t", + "\v": "\\v", + "\f": "\\f", + "\b": "\\b", + "\r": "\\r", + "\n": "\\n", + "\\": "\\\\", + "\"": "\\\"", + "\'": "\\\'", + "\`": "\\\`", + "\u2028": "\\u2028", + "\u2029": "\\u2029", + "\u0085": "\\u0085" // nextLine + }); + function encodeUtf16EscapeSequence(charCode) { + var hexCharCode = charCode.toString(16).toUpperCase(); + var paddedHexCode = ("0000" + hexCharCode).slice(-4); + return "\\u" + paddedHexCode; + } + function getReplacement(c, offset, input) { + if (c.charCodeAt(0) === 0 /* nullCharacter */) { + var lookAhead = input.charCodeAt(offset + c.length); + if (lookAhead >= 48 /* _0 */ && lookAhead <= 57 /* _9 */) { + // If the null character is followed by digits, print as a hex escape to prevent the result from parsing as an octal (which is forbidden in strict mode) + return "\\x00"; + } + // Otherwise, keep printing a literal \0 for the null character + return "\\0"; + } + return escapedCharsMap.get(c) || encodeUtf16EscapeSequence(c.charCodeAt(0)); + } + /** + * Based heavily on the abstract 'Quote'/'QuoteJSONString' operation from ECMA-262 (24.3.2.2), + * but augmented for a few select characters (e.g. lineSeparator, paragraphSeparator, nextLine) + * Note that this doesn't actually wrap the input in double quotes. + */ + function escapeString(s, quoteChar) { + var escapedCharsRegExp = quoteChar === 96 /* backtick */ ? backtickQuoteEscapedCharsRegExp : + quoteChar === 39 /* singleQuote */ ? singleQuoteEscapedCharsRegExp : + doubleQuoteEscapedCharsRegExp; + return s.replace(escapedCharsRegExp, getReplacement); + } + ts.escapeString = escapeString; + var nonAsciiCharacters = /[^\u0000-\u007F]/g; + function escapeNonAsciiString(s, quoteChar) { + s = escapeString(s, quoteChar); + // Replace non-ASCII characters with '\uNNNN' escapes if any exist. + // Otherwise just return the original string. + return nonAsciiCharacters.test(s) ? + s.replace(nonAsciiCharacters, function (c) { return encodeUtf16EscapeSequence(c.charCodeAt(0)); }) : + s; + } + ts.escapeNonAsciiString = escapeNonAsciiString; + // This consists of the first 19 unprintable ASCII characters, JSX canonical escapes, lineSeparator, + // paragraphSeparator, and nextLine. The latter three are just desirable to suppress new lines in + // the language service. These characters should be escaped when printing, and if any characters are added, + // the map below must be updated. + var jsxDoubleQuoteEscapedCharsRegExp = /[\"\u0000-\u001f\u2028\u2029\u0085]/g; + var jsxSingleQuoteEscapedCharsRegExp = /[\'\u0000-\u001f\u2028\u2029\u0085]/g; + var jsxEscapedCharsMap = ts.createMapFromTemplate({ + "\"": """, + "\'": "'" + }); + function encodeJsxCharacterEntity(charCode) { + var hexCharCode = charCode.toString(16).toUpperCase(); + return "&#x" + hexCharCode + ";"; + } + function getJsxAttributeStringReplacement(c) { + if (c.charCodeAt(0) === 0 /* nullCharacter */) { + return "�"; + } + return jsxEscapedCharsMap.get(c) || encodeJsxCharacterEntity(c.charCodeAt(0)); + } + function escapeJsxAttributeString(s, quoteChar) { + var escapedCharsRegExp = quoteChar === 39 /* singleQuote */ ? jsxSingleQuoteEscapedCharsRegExp : + jsxDoubleQuoteEscapedCharsRegExp; + return s.replace(escapedCharsRegExp, getJsxAttributeStringReplacement); + } + ts.escapeJsxAttributeString = escapeJsxAttributeString; + /** + * Strip off existed surrounding single quotes, double quotes, or backticks from a given string + * + * @return non-quoted string + */ + function stripQuotes(name) { + var length = name.length; + if (length >= 2 && name.charCodeAt(0) === name.charCodeAt(length - 1) && isQuoteOrBacktick(name.charCodeAt(0))) { + return name.substring(1, length - 1); + } + return name; + } + ts.stripQuotes = stripQuotes; + function isQuoteOrBacktick(charCode) { + return charCode === 39 /* singleQuote */ || + charCode === 34 /* doubleQuote */ || + charCode === 96 /* backtick */; + } + function isIntrinsicJsxName(name) { + var ch = name.charCodeAt(0); + return (ch >= 97 /* a */ && ch <= 122 /* z */) || ts.stringContains(name, "-"); + } + ts.isIntrinsicJsxName = isIntrinsicJsxName; + var indentStrings = ["", " "]; + function getIndentString(level) { + if (indentStrings[level] === undefined) { + indentStrings[level] = getIndentString(level - 1) + indentStrings[1]; + } + return indentStrings[level]; + } + ts.getIndentString = getIndentString; + function getIndentSize() { + return indentStrings[1].length; + } + ts.getIndentSize = getIndentSize; + function createTextWriter(newLine) { + var output; + var indent; + var lineStart; + var lineCount; + var linePos; + var hasTrailingComment = false; + function updateLineCountAndPosFor(s) { + var lineStartsOfS = ts.computeLineStarts(s); + if (lineStartsOfS.length > 1) { + lineCount = lineCount + lineStartsOfS.length - 1; + linePos = output.length - s.length + ts.last(lineStartsOfS); + lineStart = (linePos - output.length) === 0; + } + else { + lineStart = false; + } + } + function writeText(s) { + if (s && s.length) { + if (lineStart) { + s = getIndentString(indent) + s; + lineStart = false; + } + output += s; + updateLineCountAndPosFor(s); + } + } + function write(s) { + if (s) + hasTrailingComment = false; + writeText(s); + } + function writeComment(s) { + if (s) + hasTrailingComment = true; + writeText(s); + } + function reset() { + output = ""; + indent = 0; + lineStart = true; + lineCount = 0; + linePos = 0; + hasTrailingComment = false; + } + function rawWrite(s) { + if (s !== undefined) { + output += s; + updateLineCountAndPosFor(s); + hasTrailingComment = false; + } + } + function writeLiteral(s) { + if (s && s.length) { + write(s); + } + } + function writeLine(force) { + if (!lineStart || force) { + output += newLine; + lineCount++; + linePos = output.length; + lineStart = true; + hasTrailingComment = false; + } + } + function getTextPosWithWriteLine() { + return lineStart ? output.length : (output.length + newLine.length); + } + reset(); + return { + write: write, + rawWrite: rawWrite, + writeLiteral: writeLiteral, + writeLine: writeLine, + increaseIndent: function () { indent++; }, + decreaseIndent: function () { indent--; }, + getIndent: function () { return indent; }, + getTextPos: function () { return output.length; }, + getLine: function () { return lineCount; }, + getColumn: function () { return lineStart ? indent * getIndentSize() : output.length - linePos; }, + getText: function () { return output; }, + isAtStartOfLine: function () { return lineStart; }, + hasTrailingComment: function () { return hasTrailingComment; }, + hasTrailingWhitespace: function () { return !!output.length && ts.isWhiteSpaceLike(output.charCodeAt(output.length - 1)); }, + clear: reset, + reportInaccessibleThisError: ts.noop, + reportPrivateInBaseOfClassExpression: ts.noop, + reportInaccessibleUniqueSymbolError: ts.noop, + trackSymbol: ts.noop, + writeKeyword: write, + writeOperator: write, + writeParameter: write, + writeProperty: write, + writePunctuation: write, + writeSpace: write, + writeStringLiteral: write, + writeSymbol: function (s, _) { return write(s); }, + writeTrailingSemicolon: write, + writeComment: writeComment, + getTextPosWithWriteLine: getTextPosWithWriteLine + }; + } + ts.createTextWriter = createTextWriter; + function getTrailingSemicolonDeferringWriter(writer) { + var pendingTrailingSemicolon = false; + function commitPendingTrailingSemicolon() { + if (pendingTrailingSemicolon) { + writer.writeTrailingSemicolon(";"); + pendingTrailingSemicolon = false; + } + } + return __assign(__assign({}, writer), { writeTrailingSemicolon: function () { + pendingTrailingSemicolon = true; + }, + writeLiteral: function (s) { + commitPendingTrailingSemicolon(); + writer.writeLiteral(s); + }, + writeStringLiteral: function (s) { + commitPendingTrailingSemicolon(); + writer.writeStringLiteral(s); + }, + writeSymbol: function (s, sym) { + commitPendingTrailingSemicolon(); + writer.writeSymbol(s, sym); + }, + writePunctuation: function (s) { + commitPendingTrailingSemicolon(); + writer.writePunctuation(s); + }, + writeKeyword: function (s) { + commitPendingTrailingSemicolon(); + writer.writeKeyword(s); + }, + writeOperator: function (s) { + commitPendingTrailingSemicolon(); + writer.writeOperator(s); + }, + writeParameter: function (s) { + commitPendingTrailingSemicolon(); + writer.writeParameter(s); + }, + writeSpace: function (s) { + commitPendingTrailingSemicolon(); + writer.writeSpace(s); + }, + writeProperty: function (s) { + commitPendingTrailingSemicolon(); + writer.writeProperty(s); + }, + writeComment: function (s) { + commitPendingTrailingSemicolon(); + writer.writeComment(s); + }, + writeLine: function () { + commitPendingTrailingSemicolon(); + writer.writeLine(); + }, + increaseIndent: function () { + commitPendingTrailingSemicolon(); + writer.increaseIndent(); + }, + decreaseIndent: function () { + commitPendingTrailingSemicolon(); + writer.decreaseIndent(); + } }); + } + ts.getTrailingSemicolonDeferringWriter = getTrailingSemicolonDeferringWriter; + function hostUsesCaseSensitiveFileNames(host) { + return host.useCaseSensitiveFileNames ? host.useCaseSensitiveFileNames() : false; + } + ts.hostUsesCaseSensitiveFileNames = hostUsesCaseSensitiveFileNames; + function hostGetCanonicalFileName(host) { + return ts.createGetCanonicalFileName(hostUsesCaseSensitiveFileNames(host)); + } + ts.hostGetCanonicalFileName = hostGetCanonicalFileName; + function getResolvedExternalModuleName(host, file, referenceFile) { + return file.moduleName || getExternalModuleNameFromPath(host, file.fileName, referenceFile && referenceFile.fileName); + } + ts.getResolvedExternalModuleName = getResolvedExternalModuleName; + function getExternalModuleNameFromDeclaration(host, resolver, declaration) { + var file = resolver.getExternalModuleFileFromDeclaration(declaration); + if (!file || file.isDeclarationFile) { + return undefined; + } + return getResolvedExternalModuleName(host, file); + } + ts.getExternalModuleNameFromDeclaration = getExternalModuleNameFromDeclaration; + /** + * Resolves a local path to a path which is absolute to the base of the emit + */ + function getExternalModuleNameFromPath(host, fileName, referencePath) { + var getCanonicalFileName = function (f) { return host.getCanonicalFileName(f); }; + var dir = ts.toPath(referencePath ? ts.getDirectoryPath(referencePath) : host.getCommonSourceDirectory(), host.getCurrentDirectory(), getCanonicalFileName); + var filePath = ts.getNormalizedAbsolutePath(fileName, host.getCurrentDirectory()); + var relativePath = ts.getRelativePathToDirectoryOrUrl(dir, filePath, dir, getCanonicalFileName, /*isAbsolutePathAnUrl*/ false); + var extensionless = removeFileExtension(relativePath); + return referencePath ? ts.ensurePathIsNonModuleName(extensionless) : extensionless; + } + ts.getExternalModuleNameFromPath = getExternalModuleNameFromPath; + function getOwnEmitOutputFilePath(fileName, host, extension) { + var compilerOptions = host.getCompilerOptions(); + var emitOutputFilePathWithoutExtension; + if (compilerOptions.outDir) { + emitOutputFilePathWithoutExtension = removeFileExtension(getSourceFilePathInNewDir(fileName, host, compilerOptions.outDir)); + } + else { + emitOutputFilePathWithoutExtension = removeFileExtension(fileName); + } + return emitOutputFilePathWithoutExtension + extension; + } + ts.getOwnEmitOutputFilePath = getOwnEmitOutputFilePath; + function getDeclarationEmitOutputFilePath(fileName, host) { + return getDeclarationEmitOutputFilePathWorker(fileName, host.getCompilerOptions(), host.getCurrentDirectory(), host.getCommonSourceDirectory(), function (f) { return host.getCanonicalFileName(f); }); + } + ts.getDeclarationEmitOutputFilePath = getDeclarationEmitOutputFilePath; + function getDeclarationEmitOutputFilePathWorker(fileName, options, currentDirectory, commonSourceDirectory, getCanonicalFileName) { + var outputDir = options.declarationDir || options.outDir; // Prefer declaration folder if specified + var path = outputDir + ? getSourceFilePathInNewDirWorker(fileName, outputDir, currentDirectory, commonSourceDirectory, getCanonicalFileName) + : fileName; + return removeFileExtension(path) + ".d.ts" /* Dts */; + } + ts.getDeclarationEmitOutputFilePathWorker = getDeclarationEmitOutputFilePathWorker; + /** + * Gets the source files that are expected to have an emit output. + * + * Originally part of `forEachExpectedEmitFile`, this functionality was extracted to support + * transformations. + * + * @param host An EmitHost. + * @param targetSourceFile An optional target source file to emit. + */ + function getSourceFilesToEmit(host, targetSourceFile, forceDtsEmit) { + var options = host.getCompilerOptions(); + if (options.outFile || options.out) { + var moduleKind = getEmitModuleKind(options); + var moduleEmitEnabled_1 = options.emitDeclarationOnly || moduleKind === ts.ModuleKind.AMD || moduleKind === ts.ModuleKind.System; + // Can emit only sources that are not declaration file and are either non module code or module with --module or --target es6 specified + return ts.filter(host.getSourceFiles(), function (sourceFile) { + return (moduleEmitEnabled_1 || !ts.isExternalModule(sourceFile)) && + sourceFileMayBeEmitted(sourceFile, host, forceDtsEmit); + }); + } + else { + var sourceFiles = targetSourceFile === undefined ? host.getSourceFiles() : [targetSourceFile]; + return ts.filter(sourceFiles, function (sourceFile) { return sourceFileMayBeEmitted(sourceFile, host, forceDtsEmit); }); + } + } + ts.getSourceFilesToEmit = getSourceFilesToEmit; + /** Don't call this for `--outFile`, just for `--outDir` or plain emit. `--outFile` needs additional checks. */ + function sourceFileMayBeEmitted(sourceFile, host, forceDtsEmit) { + var options = host.getCompilerOptions(); + return !(options.noEmitForJsFiles && isSourceFileJS(sourceFile)) && + !sourceFile.isDeclarationFile && + !host.isSourceFileFromExternalLibrary(sourceFile) && + !(isJsonSourceFile(sourceFile) && host.getResolvedProjectReferenceToRedirect(sourceFile.fileName)) && + (forceDtsEmit || !host.isSourceOfProjectReferenceRedirect(sourceFile.fileName)); + } + ts.sourceFileMayBeEmitted = sourceFileMayBeEmitted; + function getSourceFilePathInNewDir(fileName, host, newDirPath) { + return getSourceFilePathInNewDirWorker(fileName, newDirPath, host.getCurrentDirectory(), host.getCommonSourceDirectory(), function (f) { return host.getCanonicalFileName(f); }); + } + ts.getSourceFilePathInNewDir = getSourceFilePathInNewDir; + function getSourceFilePathInNewDirWorker(fileName, newDirPath, currentDirectory, commonSourceDirectory, getCanonicalFileName) { + var sourceFilePath = ts.getNormalizedAbsolutePath(fileName, currentDirectory); + var isSourceFileInCommonSourceDirectory = getCanonicalFileName(sourceFilePath).indexOf(getCanonicalFileName(commonSourceDirectory)) === 0; + sourceFilePath = isSourceFileInCommonSourceDirectory ? sourceFilePath.substring(commonSourceDirectory.length) : sourceFilePath; + return ts.combinePaths(newDirPath, sourceFilePath); + } + ts.getSourceFilePathInNewDirWorker = getSourceFilePathInNewDirWorker; + function writeFile(host, diagnostics, fileName, data, writeByteOrderMark, sourceFiles) { + host.writeFile(fileName, data, writeByteOrderMark, function (hostErrorMessage) { + diagnostics.add(createCompilerDiagnostic(ts.Diagnostics.Could_not_write_file_0_Colon_1, fileName, hostErrorMessage)); + }, sourceFiles); + } + ts.writeFile = writeFile; + function ensureDirectoriesExist(directoryPath, createDirectory, directoryExists) { + if (directoryPath.length > ts.getRootLength(directoryPath) && !directoryExists(directoryPath)) { + var parentDirectory = ts.getDirectoryPath(directoryPath); + ensureDirectoriesExist(parentDirectory, createDirectory, directoryExists); + createDirectory(directoryPath); + } + } + function writeFileEnsuringDirectories(path, data, writeByteOrderMark, writeFile, createDirectory, directoryExists) { + // PERF: Checking for directory existence is expensive. Instead, assume the directory exists + // and fall back to creating it if the file write fails. + try { + writeFile(path, data, writeByteOrderMark); + } + catch (_a) { + ensureDirectoriesExist(ts.getDirectoryPath(ts.normalizePath(path)), createDirectory, directoryExists); + writeFile(path, data, writeByteOrderMark); + } + } + ts.writeFileEnsuringDirectories = writeFileEnsuringDirectories; + function getLineOfLocalPosition(sourceFile, pos) { + var lineStarts = ts.getLineStarts(sourceFile); + return ts.computeLineOfPosition(lineStarts, pos); + } + ts.getLineOfLocalPosition = getLineOfLocalPosition; + function getLineOfLocalPositionFromLineMap(lineMap, pos) { + return ts.computeLineOfPosition(lineMap, pos); + } + ts.getLineOfLocalPositionFromLineMap = getLineOfLocalPositionFromLineMap; + function getFirstConstructorWithBody(node) { + return ts.find(node.members, function (member) { return ts.isConstructorDeclaration(member) && nodeIsPresent(member.body); }); + } + ts.getFirstConstructorWithBody = getFirstConstructorWithBody; + function getSetAccessorValueParameter(accessor) { + if (accessor && accessor.parameters.length > 0) { + var hasThis = accessor.parameters.length === 2 && parameterIsThisKeyword(accessor.parameters[0]); + return accessor.parameters[hasThis ? 1 : 0]; + } + } + ts.getSetAccessorValueParameter = getSetAccessorValueParameter; + /** Get the type annotation for the value parameter. */ + function getSetAccessorTypeAnnotationNode(accessor) { + var parameter = getSetAccessorValueParameter(accessor); + return parameter && parameter.type; + } + ts.getSetAccessorTypeAnnotationNode = getSetAccessorTypeAnnotationNode; + function getThisParameter(signature) { + // callback tags do not currently support this parameters + if (signature.parameters.length && !ts.isJSDocSignature(signature)) { + var thisParameter = signature.parameters[0]; + if (parameterIsThisKeyword(thisParameter)) { + return thisParameter; + } + } + } + ts.getThisParameter = getThisParameter; + function parameterIsThisKeyword(parameter) { + return isThisIdentifier(parameter.name); + } + ts.parameterIsThisKeyword = parameterIsThisKeyword; + function isThisIdentifier(node) { + return !!node && node.kind === 75 /* Identifier */ && identifierIsThisKeyword(node); + } + ts.isThisIdentifier = isThisIdentifier; + function identifierIsThisKeyword(id) { + return id.originalKeywordKind === 104 /* ThisKeyword */; + } + ts.identifierIsThisKeyword = identifierIsThisKeyword; + function getAllAccessorDeclarations(declarations, accessor) { + // TODO: GH#18217 + var firstAccessor; + var secondAccessor; + var getAccessor; + var setAccessor; + if (hasDynamicName(accessor)) { + firstAccessor = accessor; + if (accessor.kind === 163 /* GetAccessor */) { + getAccessor = accessor; + } + else if (accessor.kind === 164 /* SetAccessor */) { + setAccessor = accessor; + } + else { + ts.Debug.fail("Accessor has wrong kind"); + } + } + else { + ts.forEach(declarations, function (member) { + if (ts.isAccessor(member) + && hasModifier(member, 32 /* Static */) === hasModifier(accessor, 32 /* Static */)) { + var memberName = getPropertyNameForPropertyNameNode(member.name); + var accessorName = getPropertyNameForPropertyNameNode(accessor.name); + if (memberName === accessorName) { + if (!firstAccessor) { + firstAccessor = member; + } + else if (!secondAccessor) { + secondAccessor = member; + } + if (member.kind === 163 /* GetAccessor */ && !getAccessor) { + // eslint-disable-next-line + getAccessor = member; + } + if (member.kind === 164 /* SetAccessor */ && !setAccessor) { + // eslint-disable-next-line + setAccessor = member; + } + } + } + }); + } + return { + firstAccessor: firstAccessor, + secondAccessor: secondAccessor, + getAccessor: getAccessor, + setAccessor: setAccessor + }; + } + ts.getAllAccessorDeclarations = getAllAccessorDeclarations; + /** + * Gets the effective type annotation of a variable, parameter, or property. If the node was + * parsed in a JavaScript file, gets the type annotation from JSDoc. Also gets the type of + * functions only the JSDoc case. + */ + function getEffectiveTypeAnnotationNode(node) { + if (!isInJSFile(node) && ts.isFunctionDeclaration(node)) + return undefined; + var type = node.type; + if (type || !isInJSFile(node)) + return type; + return ts.isJSDocPropertyLikeTag(node) ? node.typeExpression && node.typeExpression.type : ts.getJSDocType(node); + } + ts.getEffectiveTypeAnnotationNode = getEffectiveTypeAnnotationNode; + function getTypeAnnotationNode(node) { + return node.type; + } + ts.getTypeAnnotationNode = getTypeAnnotationNode; + /** + * Gets the effective return type annotation of a signature. If the node was parsed in a + * JavaScript file, gets the return type annotation from JSDoc. + */ + function getEffectiveReturnTypeNode(node) { + return ts.isJSDocSignature(node) ? + node.type && node.type.typeExpression && node.type.typeExpression.type : + node.type || (isInJSFile(node) ? ts.getJSDocReturnType(node) : undefined); + } + ts.getEffectiveReturnTypeNode = getEffectiveReturnTypeNode; + function getJSDocTypeParameterDeclarations(node) { + return ts.flatMap(ts.getJSDocTags(node), function (tag) { return isNonTypeAliasTemplate(tag) ? tag.typeParameters : undefined; }); + } + ts.getJSDocTypeParameterDeclarations = getJSDocTypeParameterDeclarations; + /** template tags are only available when a typedef isn't already using them */ + function isNonTypeAliasTemplate(tag) { + return ts.isJSDocTemplateTag(tag) && !(tag.parent.kind === 303 /* JSDocComment */ && tag.parent.tags.some(isJSDocTypeAlias)); + } + /** + * Gets the effective type annotation of the value parameter of a set accessor. If the node + * was parsed in a JavaScript file, gets the type annotation from JSDoc. + */ + function getEffectiveSetAccessorTypeAnnotationNode(node) { + var parameter = getSetAccessorValueParameter(node); + return parameter && getEffectiveTypeAnnotationNode(parameter); + } + ts.getEffectiveSetAccessorTypeAnnotationNode = getEffectiveSetAccessorTypeAnnotationNode; + function emitNewLineBeforeLeadingComments(lineMap, writer, node, leadingComments) { + emitNewLineBeforeLeadingCommentsOfPosition(lineMap, writer, node.pos, leadingComments); + } + ts.emitNewLineBeforeLeadingComments = emitNewLineBeforeLeadingComments; + function emitNewLineBeforeLeadingCommentsOfPosition(lineMap, writer, pos, leadingComments) { + // If the leading comments start on different line than the start of node, write new line + if (leadingComments && leadingComments.length && pos !== leadingComments[0].pos && + getLineOfLocalPositionFromLineMap(lineMap, pos) !== getLineOfLocalPositionFromLineMap(lineMap, leadingComments[0].pos)) { + writer.writeLine(); + } + } + ts.emitNewLineBeforeLeadingCommentsOfPosition = emitNewLineBeforeLeadingCommentsOfPosition; + function emitNewLineBeforeLeadingCommentOfPosition(lineMap, writer, pos, commentPos) { + // If the leading comments start on different line than the start of node, write new line + if (pos !== commentPos && + getLineOfLocalPositionFromLineMap(lineMap, pos) !== getLineOfLocalPositionFromLineMap(lineMap, commentPos)) { + writer.writeLine(); + } + } + ts.emitNewLineBeforeLeadingCommentOfPosition = emitNewLineBeforeLeadingCommentOfPosition; + function emitComments(text, lineMap, writer, comments, leadingSeparator, trailingSeparator, newLine, writeComment) { + if (comments && comments.length > 0) { + if (leadingSeparator) { + writer.writeSpace(" "); + } + var emitInterveningSeparator = false; + for (var _i = 0, comments_1 = comments; _i < comments_1.length; _i++) { + var comment = comments_1[_i]; + if (emitInterveningSeparator) { + writer.writeSpace(" "); + emitInterveningSeparator = false; + } + writeComment(text, lineMap, writer, comment.pos, comment.end, newLine); + if (comment.hasTrailingNewLine) { + writer.writeLine(); + } + else { + emitInterveningSeparator = true; + } + } + if (emitInterveningSeparator && trailingSeparator) { + writer.writeSpace(" "); + } + } + } + ts.emitComments = emitComments; + /** + * Detached comment is a comment at the top of file or function body that is separated from + * the next statement by space. + */ + function emitDetachedComments(text, lineMap, writer, writeComment, node, newLine, removeComments) { + var leadingComments; + var currentDetachedCommentInfo; + if (removeComments) { + // removeComments is true, only reserve pinned comment at the top of file + // For example: + // /*! Pinned Comment */ + // + // var x = 10; + if (node.pos === 0) { + leadingComments = ts.filter(ts.getLeadingCommentRanges(text, node.pos), isPinnedCommentLocal); + } + } + else { + // removeComments is false, just get detached as normal and bypass the process to filter comment + leadingComments = ts.getLeadingCommentRanges(text, node.pos); + } + if (leadingComments) { + var detachedComments = []; + var lastComment = void 0; + for (var _i = 0, leadingComments_1 = leadingComments; _i < leadingComments_1.length; _i++) { + var comment = leadingComments_1[_i]; + if (lastComment) { + var lastCommentLine = getLineOfLocalPositionFromLineMap(lineMap, lastComment.end); + var commentLine = getLineOfLocalPositionFromLineMap(lineMap, comment.pos); + if (commentLine >= lastCommentLine + 2) { + // There was a blank line between the last comment and this comment. This + // comment is not part of the copyright comments. Return what we have so + // far. + break; + } + } + detachedComments.push(comment); + lastComment = comment; + } + if (detachedComments.length) { + // All comments look like they could have been part of the copyright header. Make + // sure there is at least one blank line between it and the node. If not, it's not + // a copyright header. + var lastCommentLine = getLineOfLocalPositionFromLineMap(lineMap, ts.last(detachedComments).end); + var nodeLine = getLineOfLocalPositionFromLineMap(lineMap, ts.skipTrivia(text, node.pos)); + if (nodeLine >= lastCommentLine + 2) { + // Valid detachedComments + emitNewLineBeforeLeadingComments(lineMap, writer, node, leadingComments); + emitComments(text, lineMap, writer, detachedComments, /*leadingSeparator*/ false, /*trailingSeparator*/ true, newLine, writeComment); + currentDetachedCommentInfo = { nodePos: node.pos, detachedCommentEndPos: ts.last(detachedComments).end }; + } + } + } + return currentDetachedCommentInfo; + function isPinnedCommentLocal(comment) { + return isPinnedComment(text, comment.pos); + } + } + ts.emitDetachedComments = emitDetachedComments; + function writeCommentRange(text, lineMap, writer, commentPos, commentEnd, newLine) { + if (text.charCodeAt(commentPos + 1) === 42 /* asterisk */) { + var firstCommentLineAndCharacter = ts.computeLineAndCharacterOfPosition(lineMap, commentPos); + var lineCount = lineMap.length; + var firstCommentLineIndent = void 0; + for (var pos = commentPos, currentLine = firstCommentLineAndCharacter.line; pos < commentEnd; currentLine++) { + var nextLineStart = (currentLine + 1) === lineCount + ? text.length + 1 + : lineMap[currentLine + 1]; + if (pos !== commentPos) { + // If we are not emitting first line, we need to write the spaces to adjust the alignment + if (firstCommentLineIndent === undefined) { + firstCommentLineIndent = calculateIndent(text, lineMap[firstCommentLineAndCharacter.line], commentPos); + } + // These are number of spaces writer is going to write at current indent + var currentWriterIndentSpacing = writer.getIndent() * getIndentSize(); + // Number of spaces we want to be writing + // eg: Assume writer indent + // module m { + // /* starts at character 9 this is line 1 + // * starts at character pos 4 line --1 = 8 - 8 + 3 + // More left indented comment */ --2 = 8 - 8 + 2 + // class c { } + // } + // module m { + // /* this is line 1 -- Assume current writer indent 8 + // * line --3 = 8 - 4 + 5 + // More right indented comment */ --4 = 8 - 4 + 11 + // class c { } + // } + var spacesToEmit = currentWriterIndentSpacing - firstCommentLineIndent + calculateIndent(text, pos, nextLineStart); + if (spacesToEmit > 0) { + var numberOfSingleSpacesToEmit = spacesToEmit % getIndentSize(); + var indentSizeSpaceString = getIndentString((spacesToEmit - numberOfSingleSpacesToEmit) / getIndentSize()); + // Write indent size string ( in eg 1: = "", 2: "" , 3: string with 8 spaces 4: string with 12 spaces + writer.rawWrite(indentSizeSpaceString); + // Emit the single spaces (in eg: 1: 3 spaces, 2: 2 spaces, 3: 1 space, 4: 3 spaces) + while (numberOfSingleSpacesToEmit) { + writer.rawWrite(" "); + numberOfSingleSpacesToEmit--; + } + } + else { + // No spaces to emit write empty string + writer.rawWrite(""); + } + } + // Write the comment line text + writeTrimmedCurrentLine(text, commentEnd, writer, newLine, pos, nextLineStart); + pos = nextLineStart; + } + } + else { + // Single line comment of style //.... + writer.writeComment(text.substring(commentPos, commentEnd)); + } + } + ts.writeCommentRange = writeCommentRange; + function writeTrimmedCurrentLine(text, commentEnd, writer, newLine, pos, nextLineStart) { + var end = Math.min(commentEnd, nextLineStart - 1); + var currentLineText = text.substring(pos, end).replace(/^\s+|\s+$/g, ""); + if (currentLineText) { + // trimmed forward and ending spaces text + writer.writeComment(currentLineText); + if (end !== commentEnd) { + writer.writeLine(); + } + } + else { + // Empty string - make sure we write empty line + writer.rawWrite(newLine); + } + } + function calculateIndent(text, pos, end) { + var currentLineIndent = 0; + for (; pos < end && ts.isWhiteSpaceSingleLine(text.charCodeAt(pos)); pos++) { + if (text.charCodeAt(pos) === 9 /* tab */) { + // Tabs = TabSize = indent size and go to next tabStop + currentLineIndent += getIndentSize() - (currentLineIndent % getIndentSize()); + } + else { + // Single space + currentLineIndent++; + } + } + return currentLineIndent; + } + function hasModifiers(node) { + return getModifierFlags(node) !== 0 /* None */; + } + ts.hasModifiers = hasModifiers; + function hasModifier(node, flags) { + return !!getSelectedModifierFlags(node, flags); + } + ts.hasModifier = hasModifier; + function hasStaticModifier(node) { + return hasModifier(node, 32 /* Static */); + } + ts.hasStaticModifier = hasStaticModifier; + function hasReadonlyModifier(node) { + return hasModifier(node, 64 /* Readonly */); + } + ts.hasReadonlyModifier = hasReadonlyModifier; + function getSelectedModifierFlags(node, flags) { + return getModifierFlags(node) & flags; + } + ts.getSelectedModifierFlags = getSelectedModifierFlags; + function getModifierFlags(node) { + if (node.kind >= 0 /* FirstToken */ && node.kind <= 152 /* LastToken */) { + return 0 /* None */; + } + if (node.modifierFlagsCache & 536870912 /* HasComputedFlags */) { + return node.modifierFlagsCache & ~536870912 /* HasComputedFlags */; + } + var flags = getModifierFlagsNoCache(node); + node.modifierFlagsCache = flags | 536870912 /* HasComputedFlags */; + return flags; + } + ts.getModifierFlags = getModifierFlags; + function getModifierFlagsNoCache(node) { + var flags = 0 /* None */; + if (node.modifiers) { + for (var _i = 0, _a = node.modifiers; _i < _a.length; _i++) { + var modifier = _a[_i]; + flags |= modifierToFlag(modifier.kind); + } + } + if (isInJSFile(node) && !!node.parent) { + // getModifierFlagsNoCache should only be called when parent pointers are set, + // or when !(node.flags & NodeFlags.Synthesized) && node.kind !== SyntaxKind.SourceFile) + var tags = (ts.getJSDocPublicTag(node) ? 4 /* Public */ : 0 /* None */) + | (ts.getJSDocPrivateTag(node) ? 8 /* Private */ : 0 /* None */) + | (ts.getJSDocProtectedTag(node) ? 16 /* Protected */ : 0 /* None */) + | (ts.getJSDocReadonlyTag(node) ? 64 /* Readonly */ : 0 /* None */); + flags |= tags; + } + if (node.flags & 4 /* NestedNamespace */ || (node.kind === 75 /* Identifier */ && node.isInJSDocNamespace)) { + flags |= 1 /* Export */; + } + return flags; + } + ts.getModifierFlagsNoCache = getModifierFlagsNoCache; + function modifierToFlag(token) { + switch (token) { + case 120 /* StaticKeyword */: return 32 /* Static */; + case 119 /* PublicKeyword */: return 4 /* Public */; + case 118 /* ProtectedKeyword */: return 16 /* Protected */; + case 117 /* PrivateKeyword */: return 8 /* Private */; + case 122 /* AbstractKeyword */: return 128 /* Abstract */; + case 89 /* ExportKeyword */: return 1 /* Export */; + case 130 /* DeclareKeyword */: return 2 /* Ambient */; + case 81 /* ConstKeyword */: return 2048 /* Const */; + case 84 /* DefaultKeyword */: return 512 /* Default */; + case 126 /* AsyncKeyword */: return 256 /* Async */; + case 138 /* ReadonlyKeyword */: return 64 /* Readonly */; + } + return 0 /* None */; + } + ts.modifierToFlag = modifierToFlag; + function isLogicalOperator(token) { + return token === 56 /* BarBarToken */ + || token === 55 /* AmpersandAmpersandToken */ + || token === 53 /* ExclamationToken */; + } + ts.isLogicalOperator = isLogicalOperator; + function isAssignmentOperator(token) { + return token >= 62 /* FirstAssignment */ && token <= 74 /* LastAssignment */; + } + ts.isAssignmentOperator = isAssignmentOperator; + /** Get `C` given `N` if `N` is in the position `class C extends N` where `N` is an ExpressionWithTypeArguments. */ + function tryGetClassExtendingExpressionWithTypeArguments(node) { + var cls = tryGetClassImplementingOrExtendingExpressionWithTypeArguments(node); + return cls && !cls.isImplements ? cls.class : undefined; + } + ts.tryGetClassExtendingExpressionWithTypeArguments = tryGetClassExtendingExpressionWithTypeArguments; + function tryGetClassImplementingOrExtendingExpressionWithTypeArguments(node) { + return ts.isExpressionWithTypeArguments(node) + && ts.isHeritageClause(node.parent) + && ts.isClassLike(node.parent.parent) + ? { class: node.parent.parent, isImplements: node.parent.token === 113 /* ImplementsKeyword */ } + : undefined; + } + ts.tryGetClassImplementingOrExtendingExpressionWithTypeArguments = tryGetClassImplementingOrExtendingExpressionWithTypeArguments; + function isAssignmentExpression(node, excludeCompoundAssignment) { + return ts.isBinaryExpression(node) + && (excludeCompoundAssignment + ? node.operatorToken.kind === 62 /* EqualsToken */ + : isAssignmentOperator(node.operatorToken.kind)) + && ts.isLeftHandSideExpression(node.left); + } + ts.isAssignmentExpression = isAssignmentExpression; + function isDestructuringAssignment(node) { + if (isAssignmentExpression(node, /*excludeCompoundAssignment*/ true)) { + var kind = node.left.kind; + return kind === 193 /* ObjectLiteralExpression */ + || kind === 192 /* ArrayLiteralExpression */; + } + return false; + } + ts.isDestructuringAssignment = isDestructuringAssignment; + function isExpressionWithTypeArgumentsInClassExtendsClause(node) { + return tryGetClassExtendingExpressionWithTypeArguments(node) !== undefined; + } + ts.isExpressionWithTypeArgumentsInClassExtendsClause = isExpressionWithTypeArgumentsInClassExtendsClause; + function isEntityNameExpression(node) { + return node.kind === 75 /* Identifier */ || isPropertyAccessEntityNameExpression(node); + } + ts.isEntityNameExpression = isEntityNameExpression; + function getFirstIdentifier(node) { + switch (node.kind) { + case 75 /* Identifier */: + return node; + case 153 /* QualifiedName */: + do { + node = node.left; + } while (node.kind !== 75 /* Identifier */); + return node; + case 194 /* PropertyAccessExpression */: + do { + node = node.expression; + } while (node.kind !== 75 /* Identifier */); + return node; + } + } + ts.getFirstIdentifier = getFirstIdentifier; + function isDottedName(node) { + return node.kind === 75 /* Identifier */ || node.kind === 104 /* ThisKeyword */ || node.kind === 102 /* SuperKeyword */ || + node.kind === 194 /* PropertyAccessExpression */ && isDottedName(node.expression) || + node.kind === 200 /* ParenthesizedExpression */ && isDottedName(node.expression); + } + ts.isDottedName = isDottedName; + function isPropertyAccessEntityNameExpression(node) { + return ts.isPropertyAccessExpression(node) && ts.isIdentifier(node.name) && isEntityNameExpression(node.expression); + } + ts.isPropertyAccessEntityNameExpression = isPropertyAccessEntityNameExpression; + function tryGetPropertyAccessOrIdentifierToString(expr) { + if (ts.isPropertyAccessExpression(expr)) { + var baseStr = tryGetPropertyAccessOrIdentifierToString(expr.expression); + if (baseStr !== undefined) { + return baseStr + "." + expr.name; + } + } + else if (ts.isIdentifier(expr)) { + return ts.unescapeLeadingUnderscores(expr.escapedText); + } + return undefined; + } + ts.tryGetPropertyAccessOrIdentifierToString = tryGetPropertyAccessOrIdentifierToString; + function isPrototypeAccess(node) { + return isBindableStaticAccessExpression(node) && getElementOrPropertyAccessName(node) === "prototype"; + } + ts.isPrototypeAccess = isPrototypeAccess; + function isRightSideOfQualifiedNameOrPropertyAccess(node) { + return (node.parent.kind === 153 /* QualifiedName */ && node.parent.right === node) || + (node.parent.kind === 194 /* PropertyAccessExpression */ && node.parent.name === node); + } + ts.isRightSideOfQualifiedNameOrPropertyAccess = isRightSideOfQualifiedNameOrPropertyAccess; + function isEmptyObjectLiteral(expression) { + return expression.kind === 193 /* ObjectLiteralExpression */ && + expression.properties.length === 0; + } + ts.isEmptyObjectLiteral = isEmptyObjectLiteral; + function isEmptyArrayLiteral(expression) { + return expression.kind === 192 /* ArrayLiteralExpression */ && + expression.elements.length === 0; + } + ts.isEmptyArrayLiteral = isEmptyArrayLiteral; + function getLocalSymbolForExportDefault(symbol) { + return isExportDefaultSymbol(symbol) ? symbol.declarations[0].localSymbol : undefined; + } + ts.getLocalSymbolForExportDefault = getLocalSymbolForExportDefault; + function isExportDefaultSymbol(symbol) { + return symbol && ts.length(symbol.declarations) > 0 && hasModifier(symbol.declarations[0], 512 /* Default */); + } + /** Return ".ts", ".d.ts", or ".tsx", if that is the extension. */ + function tryExtractTSExtension(fileName) { + return ts.find(ts.supportedTSExtensionsForExtractExtension, function (extension) { return ts.fileExtensionIs(fileName, extension); }); + } + ts.tryExtractTSExtension = tryExtractTSExtension; + /** + * Replace each instance of non-ascii characters by one, two, three, or four escape sequences + * representing the UTF-8 encoding of the character, and return the expanded char code list. + */ + function getExpandedCharCodes(input) { + var output = []; + var length = input.length; + for (var i = 0; i < length; i++) { + var charCode = input.charCodeAt(i); + // handle utf8 + if (charCode < 0x80) { + output.push(charCode); + } + else if (charCode < 0x800) { + output.push((charCode >> 6) | 192); + output.push((charCode & 63) | 128); + } + else if (charCode < 0x10000) { + output.push((charCode >> 12) | 224); + output.push(((charCode >> 6) & 63) | 128); + output.push((charCode & 63) | 128); + } + else if (charCode < 0x20000) { + output.push((charCode >> 18) | 240); + output.push(((charCode >> 12) & 63) | 128); + output.push(((charCode >> 6) & 63) | 128); + output.push((charCode & 63) | 128); + } + else { + ts.Debug.assert(false, "Unexpected code point"); + } + } + return output; + } + var base64Digits = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="; + /** + * Converts a string to a base-64 encoded ASCII string. + */ + function convertToBase64(input) { + var result = ""; + var charCodes = getExpandedCharCodes(input); + var i = 0; + var length = charCodes.length; + var byte1, byte2, byte3, byte4; + while (i < length) { + // Convert every 6-bits in the input 3 character points + // into a base64 digit + byte1 = charCodes[i] >> 2; + byte2 = (charCodes[i] & 3) << 4 | charCodes[i + 1] >> 4; + byte3 = (charCodes[i + 1] & 15) << 2 | charCodes[i + 2] >> 6; + byte4 = charCodes[i + 2] & 63; + // We are out of characters in the input, set the extra + // digits to 64 (padding character). + if (i + 1 >= length) { + byte3 = byte4 = 64; + } + else if (i + 2 >= length) { + byte4 = 64; + } + // Write to the output + result += base64Digits.charAt(byte1) + base64Digits.charAt(byte2) + base64Digits.charAt(byte3) + base64Digits.charAt(byte4); + i += 3; + } + return result; + } + ts.convertToBase64 = convertToBase64; + function getStringFromExpandedCharCodes(codes) { + var output = ""; + var i = 0; + var length = codes.length; + while (i < length) { + var charCode = codes[i]; + if (charCode < 0x80) { + output += String.fromCharCode(charCode); + i++; + } + else if ((charCode & 192) === 192) { + var value = charCode & 63; + i++; + var nextCode = codes[i]; + while ((nextCode & 192) === 128) { + value = (value << 6) | (nextCode & 63); + i++; + nextCode = codes[i]; + } + // `value` may be greater than 10FFFF (the maximum unicode codepoint) - JS will just make this into an invalid character for us + output += String.fromCharCode(value); + } + else { + // We don't want to kill the process when decoding fails (due to a following char byte not + // following a leading char), so we just print the (bad) value + output += String.fromCharCode(charCode); + i++; + } + } + return output; + } + function base64encode(host, input) { + if (host && host.base64encode) { + return host.base64encode(input); + } + return convertToBase64(input); + } + ts.base64encode = base64encode; + function base64decode(host, input) { + if (host && host.base64decode) { + return host.base64decode(input); + } + var length = input.length; + var expandedCharCodes = []; + var i = 0; + while (i < length) { + // Stop decoding once padding characters are present + if (input.charCodeAt(i) === base64Digits.charCodeAt(64)) { + break; + } + // convert 4 input digits into three characters, ignoring padding characters at the end + var ch1 = base64Digits.indexOf(input[i]); + var ch2 = base64Digits.indexOf(input[i + 1]); + var ch3 = base64Digits.indexOf(input[i + 2]); + var ch4 = base64Digits.indexOf(input[i + 3]); + var code1 = ((ch1 & 63) << 2) | ((ch2 >> 4) & 3); + var code2 = ((ch2 & 15) << 4) | ((ch3 >> 2) & 15); + var code3 = ((ch3 & 3) << 6) | (ch4 & 63); + if (code2 === 0 && ch3 !== 0) { // code2 decoded to zero, but ch3 was padding - elide code2 and code3 + expandedCharCodes.push(code1); + } + else if (code3 === 0 && ch4 !== 0) { // code3 decoded to zero, but ch4 was padding, elide code3 + expandedCharCodes.push(code1, code2); + } + else { + expandedCharCodes.push(code1, code2, code3); + } + i += 4; + } + return getStringFromExpandedCharCodes(expandedCharCodes); + } + ts.base64decode = base64decode; + function readJson(path, host) { + try { + var jsonText = host.readFile(path); + if (!jsonText) + return {}; + var result = ts.parseConfigFileTextToJson(path, jsonText); + if (result.error) { + return {}; + } + return result.config; + } + catch (e) { + // gracefully handle if readFile fails or returns not JSON + return {}; + } + } + ts.readJson = readJson; + function directoryProbablyExists(directoryName, host) { + // if host does not support 'directoryExists' assume that directory will exist + return !host.directoryExists || host.directoryExists(directoryName); + } + ts.directoryProbablyExists = directoryProbablyExists; + var carriageReturnLineFeed = "\r\n"; + var lineFeed = "\n"; + function getNewLineCharacter(options, getNewLine) { + switch (options.newLine) { + case 0 /* CarriageReturnLineFeed */: + return carriageReturnLineFeed; + case 1 /* LineFeed */: + return lineFeed; + } + return getNewLine ? getNewLine() : ts.sys ? ts.sys.newLine : carriageReturnLineFeed; + } + ts.getNewLineCharacter = getNewLineCharacter; + /** + * Creates a new TextRange from the provided pos and end. + * + * @param pos The start position. + * @param end The end position. + */ + function createRange(pos, end) { + if (end === void 0) { end = pos; } + ts.Debug.assert(end >= pos || end === -1); + return { pos: pos, end: end }; + } + ts.createRange = createRange; + /** + * Creates a new TextRange from a provided range with a new end position. + * + * @param range A TextRange. + * @param end The new end position. + */ + function moveRangeEnd(range, end) { + return createRange(range.pos, end); + } + ts.moveRangeEnd = moveRangeEnd; + /** + * Creates a new TextRange from a provided range with a new start position. + * + * @param range A TextRange. + * @param pos The new Start position. + */ + function moveRangePos(range, pos) { + return createRange(pos, range.end); + } + ts.moveRangePos = moveRangePos; + /** + * Moves the start position of a range past any decorators. + */ + function moveRangePastDecorators(node) { + return node.decorators && node.decorators.length > 0 + ? moveRangePos(node, node.decorators.end) + : node; + } + ts.moveRangePastDecorators = moveRangePastDecorators; + /** + * Moves the start position of a range past any decorators or modifiers. + */ + function moveRangePastModifiers(node) { + return node.modifiers && node.modifiers.length > 0 + ? moveRangePos(node, node.modifiers.end) + : moveRangePastDecorators(node); + } + ts.moveRangePastModifiers = moveRangePastModifiers; + /** + * Determines whether a TextRange has the same start and end positions. + * + * @param range A TextRange. + */ + function isCollapsedRange(range) { + return range.pos === range.end; + } + ts.isCollapsedRange = isCollapsedRange; + /** + * Creates a new TextRange for a token at the provides start position. + * + * @param pos The start position. + * @param token The token. + */ + function createTokenRange(pos, token) { + return createRange(pos, pos + ts.tokenToString(token).length); + } + ts.createTokenRange = createTokenRange; + function rangeIsOnSingleLine(range, sourceFile) { + return rangeStartIsOnSameLineAsRangeEnd(range, range, sourceFile); + } + ts.rangeIsOnSingleLine = rangeIsOnSingleLine; + function rangeStartPositionsAreOnSameLine(range1, range2, sourceFile) { + return positionsAreOnSameLine(getStartPositionOfRange(range1, sourceFile, /*includeComments*/ false), getStartPositionOfRange(range2, sourceFile, /*includeComments*/ false), sourceFile); + } + ts.rangeStartPositionsAreOnSameLine = rangeStartPositionsAreOnSameLine; + function rangeEndPositionsAreOnSameLine(range1, range2, sourceFile) { + return positionsAreOnSameLine(range1.end, range2.end, sourceFile); + } + ts.rangeEndPositionsAreOnSameLine = rangeEndPositionsAreOnSameLine; + function rangeStartIsOnSameLineAsRangeEnd(range1, range2, sourceFile) { + return positionsAreOnSameLine(getStartPositionOfRange(range1, sourceFile, /*includeComments*/ false), range2.end, sourceFile); + } + ts.rangeStartIsOnSameLineAsRangeEnd = rangeStartIsOnSameLineAsRangeEnd; + function rangeEndIsOnSameLineAsRangeStart(range1, range2, sourceFile) { + return positionsAreOnSameLine(range1.end, getStartPositionOfRange(range2, sourceFile, /*includeComments*/ false), sourceFile); + } + ts.rangeEndIsOnSameLineAsRangeStart = rangeEndIsOnSameLineAsRangeStart; + function getLinesBetweenRangeEndAndRangeStart(range1, range2, sourceFile, includeSecondRangeComments) { + var range2Start = getStartPositionOfRange(range2, sourceFile, includeSecondRangeComments); + return ts.getLinesBetweenPositions(sourceFile, range1.end, range2Start); + } + ts.getLinesBetweenRangeEndAndRangeStart = getLinesBetweenRangeEndAndRangeStart; + function getLinesBetweenRangeEndPositions(range1, range2, sourceFile) { + return ts.getLinesBetweenPositions(sourceFile, range1.end, range2.end); + } + ts.getLinesBetweenRangeEndPositions = getLinesBetweenRangeEndPositions; + function isNodeArrayMultiLine(list, sourceFile) { + return !positionsAreOnSameLine(list.pos, list.end, sourceFile); + } + ts.isNodeArrayMultiLine = isNodeArrayMultiLine; + function positionsAreOnSameLine(pos1, pos2, sourceFile) { + return ts.getLinesBetweenPositions(sourceFile, pos1, pos2) === 0; + } + ts.positionsAreOnSameLine = positionsAreOnSameLine; + function getStartPositionOfRange(range, sourceFile, includeComments) { + return positionIsSynthesized(range.pos) ? -1 : ts.skipTrivia(sourceFile.text, range.pos, /*stopAfterLineBreak*/ false, includeComments); + } + ts.getStartPositionOfRange = getStartPositionOfRange; + function getLinesBetweenPositionAndPrecedingNonWhitespaceCharacter(pos, stopPos, sourceFile, includeComments) { + var startPos = ts.skipTrivia(sourceFile.text, pos, /*stopAfterLineBreak*/ false, includeComments); + var prevPos = getPreviousNonWhitespacePosition(startPos, stopPos, sourceFile); + return ts.getLinesBetweenPositions(sourceFile, prevPos !== null && prevPos !== void 0 ? prevPos : stopPos, startPos); + } + ts.getLinesBetweenPositionAndPrecedingNonWhitespaceCharacter = getLinesBetweenPositionAndPrecedingNonWhitespaceCharacter; + function getLinesBetweenPositionAndNextNonWhitespaceCharacter(pos, stopPos, sourceFile, includeComments) { + var nextPos = ts.skipTrivia(sourceFile.text, pos, /*stopAfterLineBreak*/ false, includeComments); + return ts.getLinesBetweenPositions(sourceFile, pos, Math.min(stopPos, nextPos)); + } + ts.getLinesBetweenPositionAndNextNonWhitespaceCharacter = getLinesBetweenPositionAndNextNonWhitespaceCharacter; + function getPreviousNonWhitespacePosition(pos, stopPos, sourceFile) { + if (stopPos === void 0) { stopPos = 0; } + while (pos-- > stopPos) { + if (!ts.isWhiteSpaceLike(sourceFile.text.charCodeAt(pos))) { + return pos; + } + } + } + /** + * Determines whether a name was originally the declaration name of an enum or namespace + * declaration. + */ + function isDeclarationNameOfEnumOrNamespace(node) { + var parseNode = ts.getParseTreeNode(node); + if (parseNode) { + switch (parseNode.parent.kind) { + case 248 /* EnumDeclaration */: + case 249 /* ModuleDeclaration */: + return parseNode === parseNode.parent.name; + } + } + return false; + } + ts.isDeclarationNameOfEnumOrNamespace = isDeclarationNameOfEnumOrNamespace; + function getInitializedVariables(node) { + return ts.filter(node.declarations, isInitializedVariable); + } + ts.getInitializedVariables = getInitializedVariables; + function isInitializedVariable(node) { + return node.initializer !== undefined; + } + function isWatchSet(options) { + // Firefox has Object.prototype.watch + return options.watch && options.hasOwnProperty("watch"); + } + ts.isWatchSet = isWatchSet; + function closeFileWatcher(watcher) { + watcher.close(); + } + ts.closeFileWatcher = closeFileWatcher; + function getCheckFlags(symbol) { + return symbol.flags & 33554432 /* Transient */ ? symbol.checkFlags : 0; + } + ts.getCheckFlags = getCheckFlags; + function getDeclarationModifierFlagsFromSymbol(s) { + if (s.valueDeclaration) { + var flags = ts.getCombinedModifierFlags(s.valueDeclaration); + return s.parent && s.parent.flags & 32 /* Class */ ? flags : flags & ~28 /* AccessibilityModifier */; + } + if (getCheckFlags(s) & 6 /* Synthetic */) { + var checkFlags = s.checkFlags; + var accessModifier = checkFlags & 1024 /* ContainsPrivate */ ? 8 /* Private */ : + checkFlags & 256 /* ContainsPublic */ ? 4 /* Public */ : + 16 /* Protected */; + var staticModifier = checkFlags & 2048 /* ContainsStatic */ ? 32 /* Static */ : 0; + return accessModifier | staticModifier; + } + if (s.flags & 4194304 /* Prototype */) { + return 4 /* Public */ | 32 /* Static */; + } + return 0; + } + ts.getDeclarationModifierFlagsFromSymbol = getDeclarationModifierFlagsFromSymbol; + function skipAlias(symbol, checker) { + return symbol.flags & 2097152 /* Alias */ ? checker.getAliasedSymbol(symbol) : symbol; + } + ts.skipAlias = skipAlias; + /** See comment on `declareModuleMember` in `binder.ts`. */ + function getCombinedLocalAndExportSymbolFlags(symbol) { + return symbol.exportSymbol ? symbol.exportSymbol.flags | symbol.flags : symbol.flags; + } + ts.getCombinedLocalAndExportSymbolFlags = getCombinedLocalAndExportSymbolFlags; + function isWriteOnlyAccess(node) { + return accessKind(node) === 1 /* Write */; + } + ts.isWriteOnlyAccess = isWriteOnlyAccess; + function isWriteAccess(node) { + return accessKind(node) !== 0 /* Read */; + } + ts.isWriteAccess = isWriteAccess; + var AccessKind; + (function (AccessKind) { + /** Only reads from a variable. */ + AccessKind[AccessKind["Read"] = 0] = "Read"; + /** Only writes to a variable without using the result. E.g.: `x++;`. */ + AccessKind[AccessKind["Write"] = 1] = "Write"; + /** Writes to a variable and uses the result as an expression. E.g.: `f(x++);`. */ + AccessKind[AccessKind["ReadWrite"] = 2] = "ReadWrite"; + })(AccessKind || (AccessKind = {})); + function accessKind(node) { + var parent = node.parent; + if (!parent) + return 0 /* Read */; + switch (parent.kind) { + case 200 /* ParenthesizedExpression */: + return accessKind(parent); + case 208 /* PostfixUnaryExpression */: + case 207 /* PrefixUnaryExpression */: + var operator = parent.operator; + return operator === 45 /* PlusPlusToken */ || operator === 46 /* MinusMinusToken */ ? writeOrReadWrite() : 0 /* Read */; + case 209 /* BinaryExpression */: + var _a = parent, left = _a.left, operatorToken = _a.operatorToken; + return left === node && isAssignmentOperator(operatorToken.kind) ? + operatorToken.kind === 62 /* EqualsToken */ ? 1 /* Write */ : writeOrReadWrite() + : 0 /* Read */; + case 194 /* PropertyAccessExpression */: + return parent.name !== node ? 0 /* Read */ : accessKind(parent); + case 281 /* PropertyAssignment */: { + var parentAccess = accessKind(parent.parent); + // In `({ x: varname }) = { x: 1 }`, the left `x` is a read, the right `x` is a write. + return node === parent.name ? reverseAccessKind(parentAccess) : parentAccess; + } + case 282 /* ShorthandPropertyAssignment */: + // Assume it's the local variable being accessed, since we don't check public properties for --noUnusedLocals. + return node === parent.objectAssignmentInitializer ? 0 /* Read */ : accessKind(parent.parent); + case 192 /* ArrayLiteralExpression */: + return accessKind(parent); + default: + return 0 /* Read */; + } + function writeOrReadWrite() { + // If grandparent is not an ExpressionStatement, this is used as an expression in addition to having a side effect. + return parent.parent && skipParenthesesUp(parent.parent).kind === 226 /* ExpressionStatement */ ? 1 /* Write */ : 2 /* ReadWrite */; + } + } + function reverseAccessKind(a) { + switch (a) { + case 0 /* Read */: + return 1 /* Write */; + case 1 /* Write */: + return 0 /* Read */; + case 2 /* ReadWrite */: + return 2 /* ReadWrite */; + default: + return ts.Debug.assertNever(a); + } + } + function compareDataObjects(dst, src) { + if (!dst || !src || Object.keys(dst).length !== Object.keys(src).length) { + return false; + } + for (var e in dst) { + if (typeof dst[e] === "object") { + if (!compareDataObjects(dst[e], src[e])) { + return false; + } + } + else if (typeof dst[e] !== "function") { + if (dst[e] !== src[e]) { + return false; + } + } + } + return true; + } + ts.compareDataObjects = compareDataObjects; + /** + * clears already present map by calling onDeleteExistingValue callback before deleting that key/value + */ + function clearMap(map, onDeleteValue) { + // Remove all + map.forEach(onDeleteValue); + map.clear(); + } + ts.clearMap = clearMap; + /** + * Mutates the map with newMap such that keys in map will be same as newMap. + */ + function mutateMapSkippingNewValues(map, newMap, options) { + var onDeleteValue = options.onDeleteValue, onExistingValue = options.onExistingValue; + // Needs update + map.forEach(function (existingValue, key) { + var valueInNewMap = newMap.get(key); + // Not present any more in new map, remove it + if (valueInNewMap === undefined) { + map.delete(key); + onDeleteValue(existingValue, key); + } + // If present notify about existing values + else if (onExistingValue) { + onExistingValue(existingValue, valueInNewMap, key); + } + }); + } + ts.mutateMapSkippingNewValues = mutateMapSkippingNewValues; + /** + * Mutates the map with newMap such that keys in map will be same as newMap. + */ + function mutateMap(map, newMap, options) { + // Needs update + mutateMapSkippingNewValues(map, newMap, options); + var createNewValue = options.createNewValue; + // Add new values that are not already present + newMap.forEach(function (valueInNewMap, key) { + if (!map.has(key)) { + // New values + map.set(key, createNewValue(key, valueInNewMap)); + } + }); + } + ts.mutateMap = mutateMap; + // Return true if the given type is the constructor type for an abstract class + function isAbstractConstructorType(type) { + return !!(getObjectFlags(type) & 16 /* Anonymous */) && !!type.symbol && isAbstractConstructorSymbol(type.symbol); + } + ts.isAbstractConstructorType = isAbstractConstructorType; + function isAbstractConstructorSymbol(symbol) { + if (symbol.flags & 32 /* Class */) { + var declaration = getClassLikeDeclarationOfSymbol(symbol); + return !!declaration && hasModifier(declaration, 128 /* Abstract */); + } + return false; + } + ts.isAbstractConstructorSymbol = isAbstractConstructorSymbol; + function getClassLikeDeclarationOfSymbol(symbol) { + return ts.find(symbol.declarations, ts.isClassLike); + } + ts.getClassLikeDeclarationOfSymbol = getClassLikeDeclarationOfSymbol; + function getObjectFlags(type) { + return type.flags & 3899393 /* ObjectFlagsType */ ? type.objectFlags : 0; + } + ts.getObjectFlags = getObjectFlags; + function typeHasCallOrConstructSignatures(type, checker) { + return checker.getSignaturesOfType(type, 0 /* Call */).length !== 0 || checker.getSignaturesOfType(type, 1 /* Construct */).length !== 0; + } + ts.typeHasCallOrConstructSignatures = typeHasCallOrConstructSignatures; + function forSomeAncestorDirectory(directory, callback) { + return !!ts.forEachAncestorDirectory(directory, function (d) { return callback(d) ? true : undefined; }); + } + ts.forSomeAncestorDirectory = forSomeAncestorDirectory; + function isUMDExportSymbol(symbol) { + return !!symbol && !!symbol.declarations && !!symbol.declarations[0] && ts.isNamespaceExportDeclaration(symbol.declarations[0]); + } + ts.isUMDExportSymbol = isUMDExportSymbol; + function showModuleSpecifier(_a) { + var moduleSpecifier = _a.moduleSpecifier; + return ts.isStringLiteral(moduleSpecifier) ? moduleSpecifier.text : getTextOfNode(moduleSpecifier); + } + ts.showModuleSpecifier = showModuleSpecifier; + function getLastChild(node) { + var lastChild; + ts.forEachChild(node, function (child) { + if (nodeIsPresent(child)) + lastChild = child; + }, function (children) { + // As an optimization, jump straight to the end of the list. + for (var i = children.length - 1; i >= 0; i--) { + if (nodeIsPresent(children[i])) { + lastChild = children[i]; + break; + } + } + }); + return lastChild; + } + ts.getLastChild = getLastChild; + function addToSeen(seen, key, value) { + if (value === void 0) { value = true; } + key = String(key); + if (seen.has(key)) { + return false; + } + seen.set(key, value); + return true; + } + ts.addToSeen = addToSeen; + function isObjectTypeDeclaration(node) { + return ts.isClassLike(node) || ts.isInterfaceDeclaration(node) || ts.isTypeLiteralNode(node); + } + ts.isObjectTypeDeclaration = isObjectTypeDeclaration; + function isTypeNodeKind(kind) { + return (kind >= 168 /* FirstTypeNode */ && kind <= 188 /* LastTypeNode */) + || kind === 125 /* AnyKeyword */ + || kind === 148 /* UnknownKeyword */ + || kind === 140 /* NumberKeyword */ + || kind === 151 /* BigIntKeyword */ + || kind === 141 /* ObjectKeyword */ + || kind === 128 /* BooleanKeyword */ + || kind === 143 /* StringKeyword */ + || kind === 144 /* SymbolKeyword */ + || kind === 104 /* ThisKeyword */ + || kind === 110 /* VoidKeyword */ + || kind === 146 /* UndefinedKeyword */ + || kind === 100 /* NullKeyword */ + || kind === 137 /* NeverKeyword */ + || kind === 216 /* ExpressionWithTypeArguments */ + || kind === 295 /* JSDocAllType */ + || kind === 296 /* JSDocUnknownType */ + || kind === 297 /* JSDocNullableType */ + || kind === 298 /* JSDocNonNullableType */ + || kind === 299 /* JSDocOptionalType */ + || kind === 300 /* JSDocFunctionType */ + || kind === 301 /* JSDocVariadicType */; + } + ts.isTypeNodeKind = isTypeNodeKind; + function isAccessExpression(node) { + return node.kind === 194 /* PropertyAccessExpression */ || node.kind === 195 /* ElementAccessExpression */; + } + ts.isAccessExpression = isAccessExpression; + function getNameOfAccessExpression(node) { + if (node.kind === 194 /* PropertyAccessExpression */) { + return node.name; + } + ts.Debug.assert(node.kind === 195 /* ElementAccessExpression */); + return node.argumentExpression; + } + ts.getNameOfAccessExpression = getNameOfAccessExpression; + function isBundleFileTextLike(section) { + switch (section.kind) { + case "text" /* Text */: + case "internal" /* Internal */: + return true; + default: + return false; + } + } + ts.isBundleFileTextLike = isBundleFileTextLike; + function isNamedImportsOrExports(node) { + return node.kind === 257 /* NamedImports */ || node.kind === 261 /* NamedExports */; + } + ts.isNamedImportsOrExports = isNamedImportsOrExports; + function Symbol(flags, name) { + this.flags = flags; + this.escapedName = name; + this.declarations = undefined; + this.valueDeclaration = undefined; + this.id = undefined; + this.mergeId = undefined; + this.parent = undefined; + } + function Type(checker, flags) { + this.flags = flags; + if (ts.Debug.isDebugging) { + this.checker = checker; + } + } + function Signature(checker, flags) { + this.flags = flags; + if (ts.Debug.isDebugging) { + this.checker = checker; + } + } + function Node(kind, pos, end) { + this.pos = pos; + this.end = end; + this.kind = kind; + this.id = 0; + this.flags = 0 /* None */; + this.modifierFlagsCache = 0 /* None */; + this.transformFlags = 0 /* None */; + this.parent = undefined; + this.original = undefined; + } + function Token(kind, pos, end) { + this.pos = pos; + this.end = end; + this.kind = kind; + this.id = 0; + this.flags = 0 /* None */; + this.transformFlags = 0 /* None */; + this.parent = undefined; + } + function Identifier(kind, pos, end) { + this.pos = pos; + this.end = end; + this.kind = kind; + this.id = 0; + this.flags = 0 /* None */; + this.transformFlags = 0 /* None */; + this.parent = undefined; + this.original = undefined; + this.flowNode = undefined; + } + function SourceMapSource(fileName, text, skipTrivia) { + this.fileName = fileName; + this.text = text; + this.skipTrivia = skipTrivia || (function (pos) { return pos; }); + } + // eslint-disable-next-line prefer-const + ts.objectAllocator = { + getNodeConstructor: function () { return Node; }, + getTokenConstructor: function () { return Token; }, + getIdentifierConstructor: function () { return Identifier; }, + getPrivateIdentifierConstructor: function () { return Node; }, + getSourceFileConstructor: function () { return Node; }, + getSymbolConstructor: function () { return Symbol; }, + getTypeConstructor: function () { return Type; }, + getSignatureConstructor: function () { return Signature; }, + getSourceMapSourceConstructor: function () { return SourceMapSource; }, + }; + function setObjectAllocator(alloc) { + ts.objectAllocator = alloc; + } + ts.setObjectAllocator = setObjectAllocator; + function formatStringFromArgs(text, args, baseIndex) { + if (baseIndex === void 0) { baseIndex = 0; } + return text.replace(/{(\d+)}/g, function (_match, index) { return "" + ts.Debug.checkDefined(args[+index + baseIndex]); }); + } + ts.formatStringFromArgs = formatStringFromArgs; + /* @internal */ + function setLocalizedDiagnosticMessages(messages) { + ts.localizedDiagnosticMessages = messages; + } + ts.setLocalizedDiagnosticMessages = setLocalizedDiagnosticMessages; + function getLocaleSpecificMessage(message) { + return ts.localizedDiagnosticMessages && ts.localizedDiagnosticMessages[message.key] || message.message; + } + ts.getLocaleSpecificMessage = getLocaleSpecificMessage; + function createFileDiagnostic(file, start, length, message) { + ts.Debug.assertGreaterThanOrEqual(start, 0); + ts.Debug.assertGreaterThanOrEqual(length, 0); + if (file) { + ts.Debug.assertLessThanOrEqual(start, file.text.length); + ts.Debug.assertLessThanOrEqual(start + length, file.text.length); + } + var text = getLocaleSpecificMessage(message); + if (arguments.length > 4) { + text = formatStringFromArgs(text, arguments, 4); + } + return { + file: file, + start: start, + length: length, + messageText: text, + category: message.category, + code: message.code, + reportsUnnecessary: message.reportsUnnecessary, + }; + } + ts.createFileDiagnostic = createFileDiagnostic; + function formatMessage(_dummy, message) { + var text = getLocaleSpecificMessage(message); + if (arguments.length > 2) { + text = formatStringFromArgs(text, arguments, 2); + } + return text; + } + ts.formatMessage = formatMessage; + function createCompilerDiagnostic(message) { + var text = getLocaleSpecificMessage(message); + if (arguments.length > 1) { + text = formatStringFromArgs(text, arguments, 1); + } + return { + file: undefined, + start: undefined, + length: undefined, + messageText: text, + category: message.category, + code: message.code, + reportsUnnecessary: message.reportsUnnecessary, + }; + } + ts.createCompilerDiagnostic = createCompilerDiagnostic; + function createCompilerDiagnosticFromMessageChain(chain) { + return { + file: undefined, + start: undefined, + length: undefined, + code: chain.code, + category: chain.category, + messageText: chain.next ? chain : chain.messageText, + }; + } + ts.createCompilerDiagnosticFromMessageChain = createCompilerDiagnosticFromMessageChain; + function chainDiagnosticMessages(details, message) { + var text = getLocaleSpecificMessage(message); + if (arguments.length > 2) { + text = formatStringFromArgs(text, arguments, 2); + } + return { + messageText: text, + category: message.category, + code: message.code, + next: details === undefined || Array.isArray(details) ? details : [details] + }; + } + ts.chainDiagnosticMessages = chainDiagnosticMessages; + function concatenateDiagnosticMessageChains(headChain, tailChain) { + var lastChain = headChain; + while (lastChain.next) { + lastChain = lastChain.next[0]; + } + lastChain.next = [tailChain]; + } + ts.concatenateDiagnosticMessageChains = concatenateDiagnosticMessageChains; + function getDiagnosticFilePath(diagnostic) { + return diagnostic.file ? diagnostic.file.path : undefined; + } + function compareDiagnostics(d1, d2) { + return compareDiagnosticsSkipRelatedInformation(d1, d2) || + compareRelatedInformation(d1, d2) || + 0 /* EqualTo */; + } + ts.compareDiagnostics = compareDiagnostics; + function compareDiagnosticsSkipRelatedInformation(d1, d2) { + return ts.compareStringsCaseSensitive(getDiagnosticFilePath(d1), getDiagnosticFilePath(d2)) || + ts.compareValues(d1.start, d2.start) || + ts.compareValues(d1.length, d2.length) || + ts.compareValues(d1.code, d2.code) || + compareMessageText(d1.messageText, d2.messageText) || + 0 /* EqualTo */; + } + ts.compareDiagnosticsSkipRelatedInformation = compareDiagnosticsSkipRelatedInformation; + function compareRelatedInformation(d1, d2) { + if (!d1.relatedInformation && !d2.relatedInformation) { + return 0 /* EqualTo */; + } + if (d1.relatedInformation && d2.relatedInformation) { + return ts.compareValues(d1.relatedInformation.length, d2.relatedInformation.length) || ts.forEach(d1.relatedInformation, function (d1i, index) { + var d2i = d2.relatedInformation[index]; + return compareDiagnostics(d1i, d2i); // EqualTo is 0, so falsy, and will cause the next item to be compared + }) || 0 /* EqualTo */; + } + return d1.relatedInformation ? -1 /* LessThan */ : 1 /* GreaterThan */; + } + function compareMessageText(t1, t2) { + if (typeof t1 === "string" && typeof t2 === "string") { + return ts.compareStringsCaseSensitive(t1, t2); + } + else if (typeof t1 === "string") { + return -1 /* LessThan */; + } + else if (typeof t2 === "string") { + return 1 /* GreaterThan */; + } + var res = ts.compareStringsCaseSensitive(t1.messageText, t2.messageText); + if (res) { + return res; + } + if (!t1.next && !t2.next) { + return 0 /* EqualTo */; + } + if (!t1.next) { + return -1 /* LessThan */; + } + if (!t2.next) { + return 1 /* GreaterThan */; + } + var len = Math.min(t1.next.length, t2.next.length); + for (var i = 0; i < len; i++) { + res = compareMessageText(t1.next[i], t2.next[i]); + if (res) { + return res; + } + } + if (t1.next.length < t2.next.length) { + return -1 /* LessThan */; + } + else if (t1.next.length > t2.next.length) { + return 1 /* GreaterThan */; + } + return 0 /* EqualTo */; + } + function getEmitScriptTarget(compilerOptions) { + return compilerOptions.target || 0 /* ES3 */; + } + ts.getEmitScriptTarget = getEmitScriptTarget; + function getEmitModuleKind(compilerOptions) { + return typeof compilerOptions.module === "number" ? + compilerOptions.module : + getEmitScriptTarget(compilerOptions) >= 2 /* ES2015 */ ? ts.ModuleKind.ES2015 : ts.ModuleKind.CommonJS; + } + ts.getEmitModuleKind = getEmitModuleKind; + function getEmitModuleResolutionKind(compilerOptions) { + var moduleResolution = compilerOptions.moduleResolution; + if (moduleResolution === undefined) { + moduleResolution = getEmitModuleKind(compilerOptions) === ts.ModuleKind.CommonJS ? ts.ModuleResolutionKind.NodeJs : ts.ModuleResolutionKind.Classic; + } + return moduleResolution; + } + ts.getEmitModuleResolutionKind = getEmitModuleResolutionKind; + function hasJsonModuleEmitEnabled(options) { + switch (getEmitModuleKind(options)) { + case ts.ModuleKind.CommonJS: + case ts.ModuleKind.AMD: + case ts.ModuleKind.ES2015: + case ts.ModuleKind.ES2020: + case ts.ModuleKind.ESNext: + return true; + default: + return false; + } + } + ts.hasJsonModuleEmitEnabled = hasJsonModuleEmitEnabled; + function unreachableCodeIsError(options) { + return options.allowUnreachableCode === false; + } + ts.unreachableCodeIsError = unreachableCodeIsError; + function unusedLabelIsError(options) { + return options.allowUnusedLabels === false; + } + ts.unusedLabelIsError = unusedLabelIsError; + function getAreDeclarationMapsEnabled(options) { + return !!(getEmitDeclarations(options) && options.declarationMap); + } + ts.getAreDeclarationMapsEnabled = getAreDeclarationMapsEnabled; + function getAllowSyntheticDefaultImports(compilerOptions) { + var moduleKind = getEmitModuleKind(compilerOptions); + return compilerOptions.allowSyntheticDefaultImports !== undefined + ? compilerOptions.allowSyntheticDefaultImports + : compilerOptions.esModuleInterop || + moduleKind === ts.ModuleKind.System; + } + ts.getAllowSyntheticDefaultImports = getAllowSyntheticDefaultImports; + function getEmitDeclarations(compilerOptions) { + return !!(compilerOptions.declaration || compilerOptions.composite); + } + ts.getEmitDeclarations = getEmitDeclarations; + function isIncrementalCompilation(options) { + return !!(options.incremental || options.composite); + } + ts.isIncrementalCompilation = isIncrementalCompilation; + function getStrictOptionValue(compilerOptions, flag) { + return compilerOptions[flag] === undefined ? !!compilerOptions.strict : !!compilerOptions[flag]; + } + ts.getStrictOptionValue = getStrictOptionValue; + function compilerOptionsAffectSemanticDiagnostics(newOptions, oldOptions) { + return oldOptions !== newOptions && + ts.semanticDiagnosticsOptionDeclarations.some(function (option) { return !isJsonEqual(getCompilerOptionValue(oldOptions, option), getCompilerOptionValue(newOptions, option)); }); + } + ts.compilerOptionsAffectSemanticDiagnostics = compilerOptionsAffectSemanticDiagnostics; + function compilerOptionsAffectEmit(newOptions, oldOptions) { + return oldOptions !== newOptions && + ts.affectsEmitOptionDeclarations.some(function (option) { return !isJsonEqual(getCompilerOptionValue(oldOptions, option), getCompilerOptionValue(newOptions, option)); }); + } + ts.compilerOptionsAffectEmit = compilerOptionsAffectEmit; + function getCompilerOptionValue(options, option) { + return option.strictFlag ? getStrictOptionValue(options, option.name) : options[option.name]; + } + ts.getCompilerOptionValue = getCompilerOptionValue; + function hasZeroOrOneAsteriskCharacter(str) { + var seenAsterisk = false; + for (var i = 0; i < str.length; i++) { + if (str.charCodeAt(i) === 42 /* asterisk */) { + if (!seenAsterisk) { + seenAsterisk = true; + } + else { + // have already seen asterisk + return false; + } + } + } + return true; + } + ts.hasZeroOrOneAsteriskCharacter = hasZeroOrOneAsteriskCharacter; + function discoverProbableSymlinks(files, getCanonicalFileName, cwd) { + var result = ts.createMap(); + var symlinks = ts.flatten(ts.mapDefined(files, function (sf) { + return sf.resolvedModules && ts.compact(ts.arrayFrom(ts.mapIterator(sf.resolvedModules.values(), function (res) { + return res && res.originalPath && res.resolvedFileName !== res.originalPath ? [res.resolvedFileName, res.originalPath] : undefined; + }))); + })); + for (var _i = 0, symlinks_1 = symlinks; _i < symlinks_1.length; _i++) { + var _a = symlinks_1[_i], resolvedPath = _a[0], originalPath = _a[1]; + var _b = guessDirectorySymlink(resolvedPath, originalPath, cwd, getCanonicalFileName), commonResolved = _b[0], commonOriginal = _b[1]; + result.set(commonOriginal, commonResolved); + } + return result; + } + ts.discoverProbableSymlinks = discoverProbableSymlinks; + function guessDirectorySymlink(a, b, cwd, getCanonicalFileName) { + var aParts = ts.getPathComponents(ts.toPath(a, cwd, getCanonicalFileName)); + var bParts = ts.getPathComponents(ts.toPath(b, cwd, getCanonicalFileName)); + while (!isNodeModulesOrScopedPackageDirectory(aParts[aParts.length - 2], getCanonicalFileName) && + !isNodeModulesOrScopedPackageDirectory(bParts[bParts.length - 2], getCanonicalFileName) && + getCanonicalFileName(aParts[aParts.length - 1]) === getCanonicalFileName(bParts[bParts.length - 1])) { + aParts.pop(); + bParts.pop(); + } + return [ts.getPathFromPathComponents(aParts), ts.getPathFromPathComponents(bParts)]; + } + // KLUDGE: Don't assume one 'node_modules' links to another. More likely a single directory inside the node_modules is the symlink. + // ALso, don't assume that an `@foo` directory is linked. More likely the contents of that are linked. + function isNodeModulesOrScopedPackageDirectory(s, getCanonicalFileName) { + return getCanonicalFileName(s) === "node_modules" || ts.startsWith(s, "@"); + } + function stripLeadingDirectorySeparator(s) { + return ts.isAnyDirectorySeparator(s.charCodeAt(0)) ? s.slice(1) : undefined; + } + function tryRemoveDirectoryPrefix(path, dirPath, getCanonicalFileName) { + var withoutPrefix = ts.tryRemovePrefix(path, dirPath, getCanonicalFileName); + return withoutPrefix === undefined ? undefined : stripLeadingDirectorySeparator(withoutPrefix); + } + ts.tryRemoveDirectoryPrefix = tryRemoveDirectoryPrefix; + // Reserved characters, forces escaping of any non-word (or digit), non-whitespace character. + // It may be inefficient (we could just match (/[-[\]{}()*+?.,\\^$|#\s]/g), but this is future + // proof. + var reservedCharacterPattern = /[^\w\s\/]/g; + function regExpEscape(text) { + return text.replace(reservedCharacterPattern, escapeRegExpCharacter); + } + ts.regExpEscape = regExpEscape; + function escapeRegExpCharacter(match) { + return "\\" + match; + } + var wildcardCharCodes = [42 /* asterisk */, 63 /* question */]; + ts.commonPackageFolders = ["node_modules", "bower_components", "jspm_packages"]; + var implicitExcludePathRegexPattern = "(?!(" + ts.commonPackageFolders.join("|") + ")(/|$))"; + var filesMatcher = { + /** + * Matches any single directory segment unless it is the last segment and a .min.js file + * Breakdown: + * [^./] # matches everything up to the first . character (excluding directory separators) + * (\\.(?!min\\.js$))? # matches . characters but not if they are part of the .min.js file extension + */ + singleAsteriskRegexFragment: "([^./]|(\\.(?!min\\.js$))?)*", + /** + * Regex for the ** wildcard. Matches any number of subdirectories. When used for including + * files or directories, does not match subdirectories that start with a . character + */ + doubleAsteriskRegexFragment: "(/" + implicitExcludePathRegexPattern + "[^/.][^/]*)*?", + replaceWildcardCharacter: function (match) { return replaceWildcardCharacter(match, filesMatcher.singleAsteriskRegexFragment); } + }; + var directoriesMatcher = { + singleAsteriskRegexFragment: "[^/]*", + /** + * Regex for the ** wildcard. Matches any number of subdirectories. When used for including + * files or directories, does not match subdirectories that start with a . character + */ + doubleAsteriskRegexFragment: "(/" + implicitExcludePathRegexPattern + "[^/.][^/]*)*?", + replaceWildcardCharacter: function (match) { return replaceWildcardCharacter(match, directoriesMatcher.singleAsteriskRegexFragment); } + }; + var excludeMatcher = { + singleAsteriskRegexFragment: "[^/]*", + doubleAsteriskRegexFragment: "(/.+?)?", + replaceWildcardCharacter: function (match) { return replaceWildcardCharacter(match, excludeMatcher.singleAsteriskRegexFragment); } + }; + var wildcardMatchers = { + files: filesMatcher, + directories: directoriesMatcher, + exclude: excludeMatcher + }; + function getRegularExpressionForWildcard(specs, basePath, usage) { + var patterns = getRegularExpressionsForWildcards(specs, basePath, usage); + if (!patterns || !patterns.length) { + return undefined; + } + var pattern = patterns.map(function (pattern) { return "(" + pattern + ")"; }).join("|"); + // If excluding, match "foo/bar/baz...", but if including, only allow "foo". + var terminator = usage === "exclude" ? "($|/)" : "$"; + return "^(" + pattern + ")" + terminator; + } + ts.getRegularExpressionForWildcard = getRegularExpressionForWildcard; + function getRegularExpressionsForWildcards(specs, basePath, usage) { + if (specs === undefined || specs.length === 0) { + return undefined; + } + return ts.flatMap(specs, function (spec) { + return spec && getSubPatternFromSpec(spec, basePath, usage, wildcardMatchers[usage]); + }); + } + ts.getRegularExpressionsForWildcards = getRegularExpressionsForWildcards; + /** + * An "includes" path "foo" is implicitly a glob "foo/** /*" (without the space) if its last component has no extension, + * and does not contain any glob characters itself. + */ + function isImplicitGlob(lastPathComponent) { + return !/[.*?]/.test(lastPathComponent); + } + ts.isImplicitGlob = isImplicitGlob; + function getSubPatternFromSpec(spec, basePath, usage, _a) { + var singleAsteriskRegexFragment = _a.singleAsteriskRegexFragment, doubleAsteriskRegexFragment = _a.doubleAsteriskRegexFragment, replaceWildcardCharacter = _a.replaceWildcardCharacter; + var subpattern = ""; + var hasWrittenComponent = false; + var components = ts.getNormalizedPathComponents(spec, basePath); + var lastComponent = ts.last(components); + if (usage !== "exclude" && lastComponent === "**") { + return undefined; + } + // getNormalizedPathComponents includes the separator for the root component. + // We need to remove to create our regex correctly. + components[0] = ts.removeTrailingDirectorySeparator(components[0]); + if (isImplicitGlob(lastComponent)) { + components.push("**", "*"); + } + var optionalCount = 0; + for (var _i = 0, components_1 = components; _i < components_1.length; _i++) { + var component = components_1[_i]; + if (component === "**") { + subpattern += doubleAsteriskRegexFragment; + } + else { + if (usage === "directories") { + subpattern += "("; + optionalCount++; + } + if (hasWrittenComponent) { + subpattern += ts.directorySeparator; + } + if (usage !== "exclude") { + var componentPattern = ""; + // The * and ? wildcards should not match directories or files that start with . if they + // appear first in a component. Dotted directories and files can be included explicitly + // like so: **/.*/.* + if (component.charCodeAt(0) === 42 /* asterisk */) { + componentPattern += "([^./]" + singleAsteriskRegexFragment + ")?"; + component = component.substr(1); + } + else if (component.charCodeAt(0) === 63 /* question */) { + componentPattern += "[^./]"; + component = component.substr(1); + } + componentPattern += component.replace(reservedCharacterPattern, replaceWildcardCharacter); + // Patterns should not include subfolders like node_modules unless they are + // explicitly included as part of the path. + // + // As an optimization, if the component pattern is the same as the component, + // then there definitely were no wildcard characters and we do not need to + // add the exclusion pattern. + if (componentPattern !== component) { + subpattern += implicitExcludePathRegexPattern; + } + subpattern += componentPattern; + } + else { + subpattern += component.replace(reservedCharacterPattern, replaceWildcardCharacter); + } + } + hasWrittenComponent = true; + } + while (optionalCount > 0) { + subpattern += ")?"; + optionalCount--; + } + return subpattern; + } + function replaceWildcardCharacter(match, singleAsteriskRegexFragment) { + return match === "*" ? singleAsteriskRegexFragment : match === "?" ? "[^/]" : "\\" + match; + } + /** @param path directory of the tsconfig.json */ + function getFileMatcherPatterns(path, excludes, includes, useCaseSensitiveFileNames, currentDirectory) { + path = ts.normalizePath(path); + currentDirectory = ts.normalizePath(currentDirectory); + var absolutePath = ts.combinePaths(currentDirectory, path); + return { + includeFilePatterns: ts.map(getRegularExpressionsForWildcards(includes, absolutePath, "files"), function (pattern) { return "^" + pattern + "$"; }), + includeFilePattern: getRegularExpressionForWildcard(includes, absolutePath, "files"), + includeDirectoryPattern: getRegularExpressionForWildcard(includes, absolutePath, "directories"), + excludePattern: getRegularExpressionForWildcard(excludes, absolutePath, "exclude"), + basePaths: getBasePaths(path, includes, useCaseSensitiveFileNames) + }; + } + ts.getFileMatcherPatterns = getFileMatcherPatterns; + function getRegexFromPattern(pattern, useCaseSensitiveFileNames) { + return new RegExp(pattern, useCaseSensitiveFileNames ? "" : "i"); + } + ts.getRegexFromPattern = getRegexFromPattern; + /** @param path directory of the tsconfig.json */ + function matchFiles(path, extensions, excludes, includes, useCaseSensitiveFileNames, currentDirectory, depth, getFileSystemEntries, realpath) { + path = ts.normalizePath(path); + currentDirectory = ts.normalizePath(currentDirectory); + var patterns = getFileMatcherPatterns(path, excludes, includes, useCaseSensitiveFileNames, currentDirectory); + var includeFileRegexes = patterns.includeFilePatterns && patterns.includeFilePatterns.map(function (pattern) { return getRegexFromPattern(pattern, useCaseSensitiveFileNames); }); + var includeDirectoryRegex = patterns.includeDirectoryPattern && getRegexFromPattern(patterns.includeDirectoryPattern, useCaseSensitiveFileNames); + var excludeRegex = patterns.excludePattern && getRegexFromPattern(patterns.excludePattern, useCaseSensitiveFileNames); + // Associate an array of results with each include regex. This keeps results in order of the "include" order. + // If there are no "includes", then just put everything in results[0]. + var results = includeFileRegexes ? includeFileRegexes.map(function () { return []; }) : [[]]; + var visited = ts.createMap(); + var toCanonical = ts.createGetCanonicalFileName(useCaseSensitiveFileNames); + for (var _i = 0, _a = patterns.basePaths; _i < _a.length; _i++) { + var basePath = _a[_i]; + visitDirectory(basePath, ts.combinePaths(currentDirectory, basePath), depth); + } + return ts.flatten(results); + function visitDirectory(path, absolutePath, depth) { + var canonicalPath = toCanonical(realpath(absolutePath)); + if (visited.has(canonicalPath)) + return; + visited.set(canonicalPath, true); + var _a = getFileSystemEntries(path), files = _a.files, directories = _a.directories; + var _loop_1 = function (current) { + var name = ts.combinePaths(path, current); + var absoluteName = ts.combinePaths(absolutePath, current); + if (extensions && !ts.fileExtensionIsOneOf(name, extensions)) + return "continue"; + if (excludeRegex && excludeRegex.test(absoluteName)) + return "continue"; + if (!includeFileRegexes) { + results[0].push(name); + } + else { + var includeIndex = ts.findIndex(includeFileRegexes, function (re) { return re.test(absoluteName); }); + if (includeIndex !== -1) { + results[includeIndex].push(name); + } + } + }; + for (var _i = 0, _b = ts.sort(files, ts.compareStringsCaseSensitive); _i < _b.length; _i++) { + var current = _b[_i]; + _loop_1(current); + } + if (depth !== undefined) { + depth--; + if (depth === 0) { + return; + } + } + for (var _c = 0, _d = ts.sort(directories, ts.compareStringsCaseSensitive); _c < _d.length; _c++) { + var current = _d[_c]; + var name = ts.combinePaths(path, current); + var absoluteName = ts.combinePaths(absolutePath, current); + if ((!includeDirectoryRegex || includeDirectoryRegex.test(absoluteName)) && + (!excludeRegex || !excludeRegex.test(absoluteName))) { + visitDirectory(name, absoluteName, depth); + } + } + } + } + ts.matchFiles = matchFiles; + /** + * Computes the unique non-wildcard base paths amongst the provided include patterns. + */ + function getBasePaths(path, includes, useCaseSensitiveFileNames) { + // Storage for our results in the form of literal paths (e.g. the paths as written by the user). + var basePaths = [path]; + if (includes) { + // Storage for literal base paths amongst the include patterns. + var includeBasePaths = []; + for (var _i = 0, includes_1 = includes; _i < includes_1.length; _i++) { + var include = includes_1[_i]; + // We also need to check the relative paths by converting them to absolute and normalizing + // in case they escape the base path (e.g "..\somedirectory") + var absolute = ts.isRootedDiskPath(include) ? include : ts.normalizePath(ts.combinePaths(path, include)); + // Append the literal and canonical candidate base paths. + includeBasePaths.push(getIncludeBasePath(absolute)); + } + // Sort the offsets array using either the literal or canonical path representations. + includeBasePaths.sort(ts.getStringComparer(!useCaseSensitiveFileNames)); + var _loop_2 = function (includeBasePath) { + if (ts.every(basePaths, function (basePath) { return !ts.containsPath(basePath, includeBasePath, path, !useCaseSensitiveFileNames); })) { + basePaths.push(includeBasePath); + } + }; + // Iterate over each include base path and include unique base paths that are not a + // subpath of an existing base path + for (var _a = 0, includeBasePaths_1 = includeBasePaths; _a < includeBasePaths_1.length; _a++) { + var includeBasePath = includeBasePaths_1[_a]; + _loop_2(includeBasePath); + } + } + return basePaths; + } + function getIncludeBasePath(absolute) { + var wildcardOffset = ts.indexOfAnyCharCode(absolute, wildcardCharCodes); + if (wildcardOffset < 0) { + // No "*" or "?" in the path + return !ts.hasExtension(absolute) + ? absolute + : ts.removeTrailingDirectorySeparator(ts.getDirectoryPath(absolute)); + } + return absolute.substring(0, absolute.lastIndexOf(ts.directorySeparator, wildcardOffset)); + } + function ensureScriptKind(fileName, scriptKind) { + // Using scriptKind as a condition handles both: + // - 'scriptKind' is unspecified and thus it is `undefined` + // - 'scriptKind' is set and it is `Unknown` (0) + // If the 'scriptKind' is 'undefined' or 'Unknown' then we attempt + // to get the ScriptKind from the file name. If it cannot be resolved + // from the file name then the default 'TS' script kind is returned. + return scriptKind || getScriptKindFromFileName(fileName) || 3 /* TS */; + } + ts.ensureScriptKind = ensureScriptKind; + function getScriptKindFromFileName(fileName) { + var ext = fileName.substr(fileName.lastIndexOf(".")); + switch (ext.toLowerCase()) { + case ".js" /* Js */: + return 1 /* JS */; + case ".jsx" /* Jsx */: + return 2 /* JSX */; + case ".ts" /* Ts */: + return 3 /* TS */; + case ".tsx" /* Tsx */: + return 4 /* TSX */; + case ".json" /* Json */: + return 6 /* JSON */; + default: + return 0 /* Unknown */; + } + } + ts.getScriptKindFromFileName = getScriptKindFromFileName; + /** + * List of supported extensions in order of file resolution precedence. + */ + ts.supportedTSExtensions = [".ts" /* Ts */, ".tsx" /* Tsx */, ".d.ts" /* Dts */]; + ts.supportedTSExtensionsWithJson = [".ts" /* Ts */, ".tsx" /* Tsx */, ".d.ts" /* Dts */, ".json" /* Json */]; + /** Must have ".d.ts" first because if ".ts" goes first, that will be detected as the extension instead of ".d.ts". */ + ts.supportedTSExtensionsForExtractExtension = [".d.ts" /* Dts */, ".ts" /* Ts */, ".tsx" /* Tsx */]; + ts.supportedJSExtensions = [".js" /* Js */, ".jsx" /* Jsx */]; + ts.supportedJSAndJsonExtensions = [".js" /* Js */, ".jsx" /* Jsx */, ".json" /* Json */]; + var allSupportedExtensions = __spreadArrays(ts.supportedTSExtensions, ts.supportedJSExtensions); + var allSupportedExtensionsWithJson = __spreadArrays(ts.supportedTSExtensions, ts.supportedJSExtensions, [".json" /* Json */]); + function getSupportedExtensions(options, extraFileExtensions) { + var needJsExtensions = options && options.allowJs; + if (!extraFileExtensions || extraFileExtensions.length === 0) { + return needJsExtensions ? allSupportedExtensions : ts.supportedTSExtensions; + } + var extensions = __spreadArrays(needJsExtensions ? allSupportedExtensions : ts.supportedTSExtensions, ts.mapDefined(extraFileExtensions, function (x) { return x.scriptKind === 7 /* Deferred */ || needJsExtensions && isJSLike(x.scriptKind) ? x.extension : undefined; })); + return ts.deduplicate(extensions, ts.equateStringsCaseSensitive, ts.compareStringsCaseSensitive); + } + ts.getSupportedExtensions = getSupportedExtensions; + function getSuppoertedExtensionsWithJsonIfResolveJsonModule(options, supportedExtensions) { + if (!options || !options.resolveJsonModule) { + return supportedExtensions; + } + if (supportedExtensions === allSupportedExtensions) { + return allSupportedExtensionsWithJson; + } + if (supportedExtensions === ts.supportedTSExtensions) { + return ts.supportedTSExtensionsWithJson; + } + return __spreadArrays(supportedExtensions, [".json" /* Json */]); + } + ts.getSuppoertedExtensionsWithJsonIfResolveJsonModule = getSuppoertedExtensionsWithJsonIfResolveJsonModule; + function isJSLike(scriptKind) { + return scriptKind === 1 /* JS */ || scriptKind === 2 /* JSX */; + } + function hasJSFileExtension(fileName) { + return ts.some(ts.supportedJSExtensions, function (extension) { return ts.fileExtensionIs(fileName, extension); }); + } + ts.hasJSFileExtension = hasJSFileExtension; + function hasTSFileExtension(fileName) { + return ts.some(ts.supportedTSExtensions, function (extension) { return ts.fileExtensionIs(fileName, extension); }); + } + ts.hasTSFileExtension = hasTSFileExtension; + function isSupportedSourceFileName(fileName, compilerOptions, extraFileExtensions) { + if (!fileName) { + return false; + } + var supportedExtensions = getSupportedExtensions(compilerOptions, extraFileExtensions); + for (var _i = 0, _a = getSuppoertedExtensionsWithJsonIfResolveJsonModule(compilerOptions, supportedExtensions); _i < _a.length; _i++) { + var extension = _a[_i]; + if (ts.fileExtensionIs(fileName, extension)) { + return true; + } + } + return false; + } + ts.isSupportedSourceFileName = isSupportedSourceFileName; + /** + * Extension boundaries by priority. Lower numbers indicate higher priorities, and are + * aligned to the offset of the highest priority extension in the + * allSupportedExtensions array. + */ + var ExtensionPriority; + (function (ExtensionPriority) { + ExtensionPriority[ExtensionPriority["TypeScriptFiles"] = 0] = "TypeScriptFiles"; + ExtensionPriority[ExtensionPriority["DeclarationAndJavaScriptFiles"] = 2] = "DeclarationAndJavaScriptFiles"; + ExtensionPriority[ExtensionPriority["Highest"] = 0] = "Highest"; + ExtensionPriority[ExtensionPriority["Lowest"] = 2] = "Lowest"; + })(ExtensionPriority = ts.ExtensionPriority || (ts.ExtensionPriority = {})); + function getExtensionPriority(path, supportedExtensions) { + for (var i = supportedExtensions.length - 1; i >= 0; i--) { + if (ts.fileExtensionIs(path, supportedExtensions[i])) { + return adjustExtensionPriority(i, supportedExtensions); + } + } + // If its not in the list of supported extensions, this is likely a + // TypeScript file with a non-ts extension + return 0 /* Highest */; + } + ts.getExtensionPriority = getExtensionPriority; + /** + * Adjusts an extension priority to be the highest priority within the same range. + */ + function adjustExtensionPriority(extensionPriority, supportedExtensions) { + if (extensionPriority < 2 /* DeclarationAndJavaScriptFiles */) { + return 0 /* TypeScriptFiles */; + } + else if (extensionPriority < supportedExtensions.length) { + return 2 /* DeclarationAndJavaScriptFiles */; + } + else { + return supportedExtensions.length; + } + } + ts.adjustExtensionPriority = adjustExtensionPriority; + /** + * Gets the next lowest extension priority for a given priority. + */ + function getNextLowestExtensionPriority(extensionPriority, supportedExtensions) { + if (extensionPriority < 2 /* DeclarationAndJavaScriptFiles */) { + return 2 /* DeclarationAndJavaScriptFiles */; + } + else { + return supportedExtensions.length; + } + } + ts.getNextLowestExtensionPriority = getNextLowestExtensionPriority; + var extensionsToRemove = [".d.ts" /* Dts */, ".ts" /* Ts */, ".js" /* Js */, ".tsx" /* Tsx */, ".jsx" /* Jsx */, ".json" /* Json */]; + function removeFileExtension(path) { + for (var _i = 0, extensionsToRemove_1 = extensionsToRemove; _i < extensionsToRemove_1.length; _i++) { + var ext = extensionsToRemove_1[_i]; + var extensionless = tryRemoveExtension(path, ext); + if (extensionless !== undefined) { + return extensionless; + } + } + return path; + } + ts.removeFileExtension = removeFileExtension; + function tryRemoveExtension(path, extension) { + return ts.fileExtensionIs(path, extension) ? removeExtension(path, extension) : undefined; + } + ts.tryRemoveExtension = tryRemoveExtension; + function removeExtension(path, extension) { + return path.substring(0, path.length - extension.length); + } + ts.removeExtension = removeExtension; + function changeExtension(path, newExtension) { + return ts.changeAnyExtension(path, newExtension, extensionsToRemove, /*ignoreCase*/ false); + } + ts.changeExtension = changeExtension; + function tryParsePattern(pattern) { + // This should be verified outside of here and a proper error thrown. + ts.Debug.assert(hasZeroOrOneAsteriskCharacter(pattern)); + var indexOfStar = pattern.indexOf("*"); + return indexOfStar === -1 ? undefined : { + prefix: pattern.substr(0, indexOfStar), + suffix: pattern.substr(indexOfStar + 1) + }; + } + ts.tryParsePattern = tryParsePattern; + function positionIsSynthesized(pos) { + // This is a fast way of testing the following conditions: + // pos === undefined || pos === null || isNaN(pos) || pos < 0; + return !(pos >= 0); + } + ts.positionIsSynthesized = positionIsSynthesized; + /** True if an extension is one of the supported TypeScript extensions. */ + function extensionIsTS(ext) { + return ext === ".ts" /* Ts */ || ext === ".tsx" /* Tsx */ || ext === ".d.ts" /* Dts */; + } + ts.extensionIsTS = extensionIsTS; + function resolutionExtensionIsTSOrJson(ext) { + return extensionIsTS(ext) || ext === ".json" /* Json */; + } + ts.resolutionExtensionIsTSOrJson = resolutionExtensionIsTSOrJson; + /** + * Gets the extension from a path. + * Path must have a valid extension. + */ + function extensionFromPath(path) { + var ext = tryGetExtensionFromPath(path); + return ext !== undefined ? ext : ts.Debug.fail("File " + path + " has unknown extension."); + } + ts.extensionFromPath = extensionFromPath; + function isAnySupportedFileExtension(path) { + return tryGetExtensionFromPath(path) !== undefined; + } + ts.isAnySupportedFileExtension = isAnySupportedFileExtension; + function tryGetExtensionFromPath(path) { + return ts.find(extensionsToRemove, function (e) { return ts.fileExtensionIs(path, e); }); + } + ts.tryGetExtensionFromPath = tryGetExtensionFromPath; + function isCheckJsEnabledForFile(sourceFile, compilerOptions) { + return sourceFile.checkJsDirective ? sourceFile.checkJsDirective.enabled : compilerOptions.checkJs; + } + ts.isCheckJsEnabledForFile = isCheckJsEnabledForFile; + ts.emptyFileSystemEntries = { + files: ts.emptyArray, + directories: ts.emptyArray + }; + /** + * patternStrings contains both pattern strings (containing "*") and regular strings. + * Return an exact match if possible, or a pattern match, or undefined. + * (These are verified by verifyCompilerOptions to have 0 or 1 "*" characters.) + */ + function matchPatternOrExact(patternStrings, candidate) { + var patterns = []; + for (var _i = 0, patternStrings_1 = patternStrings; _i < patternStrings_1.length; _i++) { + var patternString = patternStrings_1[_i]; + if (!hasZeroOrOneAsteriskCharacter(patternString)) + continue; + var pattern = tryParsePattern(patternString); + if (pattern) { + patterns.push(pattern); + } + else if (patternString === candidate) { + // pattern was matched as is - no need to search further + return patternString; + } + } + return ts.findBestPatternMatch(patterns, function (_) { return _; }, candidate); + } + ts.matchPatternOrExact = matchPatternOrExact; + function sliceAfter(arr, value) { + var index = arr.indexOf(value); + ts.Debug.assert(index !== -1); + return arr.slice(index); + } + ts.sliceAfter = sliceAfter; + function addRelatedInfo(diagnostic) { + var _a; + var relatedInformation = []; + for (var _i = 1; _i < arguments.length; _i++) { + relatedInformation[_i - 1] = arguments[_i]; + } + if (!relatedInformation.length) { + return diagnostic; + } + if (!diagnostic.relatedInformation) { + diagnostic.relatedInformation = []; + } + (_a = diagnostic.relatedInformation).push.apply(_a, relatedInformation); + return diagnostic; + } + ts.addRelatedInfo = addRelatedInfo; + function minAndMax(arr, getValue) { + ts.Debug.assert(arr.length !== 0); + var min = getValue(arr[0]); + var max = min; + for (var i = 1; i < arr.length; i++) { + var value = getValue(arr[i]); + if (value < min) { + min = value; + } + else if (value > max) { + max = value; + } + } + return { min: min, max: max }; + } + ts.minAndMax = minAndMax; + var NodeSet = /** @class */ (function () { + function NodeSet() { + this.map = ts.createMap(); + } + NodeSet.prototype.add = function (node) { + this.map.set(String(ts.getNodeId(node)), node); + }; + NodeSet.prototype.tryAdd = function (node) { + if (this.has(node)) + return false; + this.add(node); + return true; + }; + NodeSet.prototype.has = function (node) { + return this.map.has(String(ts.getNodeId(node))); + }; + NodeSet.prototype.forEach = function (cb) { + this.map.forEach(cb); + }; + NodeSet.prototype.some = function (pred) { + return forEachEntry(this.map, pred) || false; + }; + return NodeSet; + }()); + ts.NodeSet = NodeSet; + var NodeMap = /** @class */ (function () { + function NodeMap() { + this.map = ts.createMap(); + } + NodeMap.prototype.get = function (node) { + var res = this.map.get(String(ts.getNodeId(node))); + return res && res.value; + }; + NodeMap.prototype.getOrUpdate = function (node, setValue) { + var res = this.get(node); + if (res) + return res; + var value = setValue(); + this.set(node, value); + return value; + }; + NodeMap.prototype.set = function (node, value) { + this.map.set(String(ts.getNodeId(node)), { node: node, value: value }); + }; + NodeMap.prototype.has = function (node) { + return this.map.has(String(ts.getNodeId(node))); + }; + NodeMap.prototype.forEach = function (cb) { + this.map.forEach(function (_a) { + var node = _a.node, value = _a.value; + return cb(value, node); + }); + }; + return NodeMap; + }()); + ts.NodeMap = NodeMap; + function rangeOfNode(node) { + return { pos: getTokenPosOfNode(node), end: node.end }; + } + ts.rangeOfNode = rangeOfNode; + function rangeOfTypeParameters(typeParameters) { + // Include the `<>` + return { pos: typeParameters.pos - 1, end: typeParameters.end + 1 }; + } + ts.rangeOfTypeParameters = rangeOfTypeParameters; + function skipTypeChecking(sourceFile, options, host) { + // If skipLibCheck is enabled, skip reporting errors if file is a declaration file. + // If skipDefaultLibCheck is enabled, skip reporting errors if file contains a + // '/// ' directive. + return (options.skipLibCheck && sourceFile.isDeclarationFile || + options.skipDefaultLibCheck && sourceFile.hasNoDefaultLib) || + host.isSourceOfProjectReferenceRedirect(sourceFile.fileName); + } + ts.skipTypeChecking = skipTypeChecking; + function isJsonEqual(a, b) { + // eslint-disable-next-line no-null/no-null + return a === b || typeof a === "object" && a !== null && typeof b === "object" && b !== null && ts.equalOwnProperties(a, b, isJsonEqual); + } + ts.isJsonEqual = isJsonEqual; + function getOrUpdate(map, key, getDefault) { + var got = map.get(key); + if (got === undefined) { + var value = getDefault(); + map.set(key, value); + return value; + } + else { + return got; + } + } + ts.getOrUpdate = getOrUpdate; + /** + * Converts a bigint literal string, e.g. `0x1234n`, + * to its decimal string representation, e.g. `4660`. + */ + function parsePseudoBigInt(stringValue) { + var log2Base; + switch (stringValue.charCodeAt(1)) { // "x" in "0x123" + case 98 /* b */: + case 66 /* B */: // 0b or 0B + log2Base = 1; + break; + case 111 /* o */: + case 79 /* O */: // 0o or 0O + log2Base = 3; + break; + case 120 /* x */: + case 88 /* X */: // 0x or 0X + log2Base = 4; + break; + default: // already in decimal; omit trailing "n" + var nIndex = stringValue.length - 1; + // Skip leading 0s + var nonZeroStart = 0; + while (stringValue.charCodeAt(nonZeroStart) === 48 /* _0 */) { + nonZeroStart++; + } + return stringValue.slice(nonZeroStart, nIndex) || "0"; + } + // Omit leading "0b", "0o", or "0x", and trailing "n" + var startIndex = 2, endIndex = stringValue.length - 1; + var bitsNeeded = (endIndex - startIndex) * log2Base; + // Stores the value specified by the string as a LE array of 16-bit integers + // using Uint16 instead of Uint32 so combining steps can use bitwise operators + var segments = new Uint16Array((bitsNeeded >>> 4) + (bitsNeeded & 15 ? 1 : 0)); + // Add the digits, one at a time + for (var i = endIndex - 1, bitOffset = 0; i >= startIndex; i--, bitOffset += log2Base) { + var segment = bitOffset >>> 4; + var digitChar = stringValue.charCodeAt(i); + // Find character range: 0-9 < A-F < a-f + var digit = digitChar <= 57 /* _9 */ + ? digitChar - 48 /* _0 */ + : 10 + digitChar - + (digitChar <= 70 /* F */ ? 65 /* A */ : 97 /* a */); + var shiftedDigit = digit << (bitOffset & 15); + segments[segment] |= shiftedDigit; + var residual = shiftedDigit >>> 16; + if (residual) + segments[segment + 1] |= residual; // overflows segment + } + // Repeatedly divide segments by 10 and add remainder to base10Value + var base10Value = ""; + var firstNonzeroSegment = segments.length - 1; + var segmentsRemaining = true; + while (segmentsRemaining) { + var mod10 = 0; + segmentsRemaining = false; + for (var segment = firstNonzeroSegment; segment >= 0; segment--) { + var newSegment = mod10 << 16 | segments[segment]; + var segmentValue = (newSegment / 10) | 0; + segments[segment] = segmentValue; + mod10 = newSegment - segmentValue * 10; + if (segmentValue && !segmentsRemaining) { + firstNonzeroSegment = segment; + segmentsRemaining = true; + } + } + base10Value = mod10 + base10Value; + } + return base10Value; + } + ts.parsePseudoBigInt = parsePseudoBigInt; + function pseudoBigIntToString(_a) { + var negative = _a.negative, base10Value = _a.base10Value; + return (negative && base10Value !== "0" ? "-" : "") + base10Value; + } + ts.pseudoBigIntToString = pseudoBigIntToString; + function isValidTypeOnlyAliasUseSite(useSite) { + return !!(useSite.flags & 8388608 /* Ambient */) + || isPartOfTypeQuery(useSite) + || isIdentifierInNonEmittingHeritageClause(useSite) + || isPartOfPossiblyValidTypeOrAbstractComputedPropertyName(useSite) + || !isExpressionNode(useSite); + } + ts.isValidTypeOnlyAliasUseSite = isValidTypeOnlyAliasUseSite; + function typeOnlyDeclarationIsExport(typeOnlyDeclaration) { + return typeOnlyDeclaration.kind === 263 /* ExportSpecifier */; + } + ts.typeOnlyDeclarationIsExport = typeOnlyDeclarationIsExport; + function isPartOfPossiblyValidTypeOrAbstractComputedPropertyName(node) { + while (node.kind === 75 /* Identifier */ || node.kind === 194 /* PropertyAccessExpression */) { + node = node.parent; + } + if (node.kind !== 154 /* ComputedPropertyName */) { + return false; + } + if (hasModifier(node.parent, 128 /* Abstract */)) { + return true; + } + var containerKind = node.parent.parent.kind; + return containerKind === 246 /* InterfaceDeclaration */ || containerKind === 173 /* TypeLiteral */; + } + /** Returns true for an identifier in 1) an `implements` clause, and 2) an `extends` clause of an interface. */ + function isIdentifierInNonEmittingHeritageClause(node) { + if (node.kind !== 75 /* Identifier */) + return false; + var heritageClause = findAncestor(node.parent, function (parent) { + switch (parent.kind) { + case 279 /* HeritageClause */: + return true; + case 194 /* PropertyAccessExpression */: + case 216 /* ExpressionWithTypeArguments */: + return false; + default: + return "quit"; + } + }); + return (heritageClause === null || heritageClause === void 0 ? void 0 : heritageClause.token) === 113 /* ImplementsKeyword */ || (heritageClause === null || heritageClause === void 0 ? void 0 : heritageClause.parent.kind) === 246 /* InterfaceDeclaration */; + } + function isIdentifierTypeReference(node) { + return ts.isTypeReferenceNode(node) && ts.isIdentifier(node.typeName); + } + ts.isIdentifierTypeReference = isIdentifierTypeReference; + function arrayIsHomogeneous(array, comparer) { + if (comparer === void 0) { comparer = ts.equateValues; } + if (array.length < 2) + return true; + var first = array[0]; + for (var i = 1, length_1 = array.length; i < length_1; i++) { + var target = array[i]; + if (!comparer(first, target)) + return false; + } + return true; + } + ts.arrayIsHomogeneous = arrayIsHomogeneous; +})(ts || (ts = {})); +var ts; +(function (ts) { + var SignatureFlags; + (function (SignatureFlags) { + SignatureFlags[SignatureFlags["None"] = 0] = "None"; + SignatureFlags[SignatureFlags["Yield"] = 1] = "Yield"; + SignatureFlags[SignatureFlags["Await"] = 2] = "Await"; + SignatureFlags[SignatureFlags["Type"] = 4] = "Type"; + SignatureFlags[SignatureFlags["IgnoreMissingOpenBrace"] = 16] = "IgnoreMissingOpenBrace"; + SignatureFlags[SignatureFlags["JSDoc"] = 32] = "JSDoc"; + })(SignatureFlags || (SignatureFlags = {})); + var NodeConstructor; + var TokenConstructor; + var IdentifierConstructor; + var PrivateIdentifierConstructor; + var SourceFileConstructor; + function createNode(kind, pos, end) { + if (kind === 290 /* SourceFile */) { + return new (SourceFileConstructor || (SourceFileConstructor = ts.objectAllocator.getSourceFileConstructor()))(kind, pos, end); + } + else if (kind === 75 /* Identifier */) { + return new (IdentifierConstructor || (IdentifierConstructor = ts.objectAllocator.getIdentifierConstructor()))(kind, pos, end); + } + else if (kind === 76 /* PrivateIdentifier */) { + return new (PrivateIdentifierConstructor || (PrivateIdentifierConstructor = ts.objectAllocator.getPrivateIdentifierConstructor()))(kind, pos, end); + } + else if (!ts.isNodeKind(kind)) { + return new (TokenConstructor || (TokenConstructor = ts.objectAllocator.getTokenConstructor()))(kind, pos, end); + } + else { + return new (NodeConstructor || (NodeConstructor = ts.objectAllocator.getNodeConstructor()))(kind, pos, end); + } + } + ts.createNode = createNode; + function visitNode(cbNode, node) { + return node && cbNode(node); + } + function visitNodes(cbNode, cbNodes, nodes) { + if (nodes) { + if (cbNodes) { + return cbNodes(nodes); + } + for (var _i = 0, nodes_1 = nodes; _i < nodes_1.length; _i++) { + var node = nodes_1[_i]; + var result = cbNode(node); + if (result) { + return result; + } + } + } + } + /*@internal*/ + function isJSDocLikeText(text, start) { + return text.charCodeAt(start + 1) === 42 /* asterisk */ && + text.charCodeAt(start + 2) === 42 /* asterisk */ && + text.charCodeAt(start + 3) !== 47 /* slash */; + } + ts.isJSDocLikeText = isJSDocLikeText; + /** + * Invokes a callback for each child of the given node. The 'cbNode' callback is invoked for all child nodes + * stored in properties. If a 'cbNodes' callback is specified, it is invoked for embedded arrays; otherwise, + * embedded arrays are flattened and the 'cbNode' callback is invoked for each element. If a callback returns + * a truthy value, iteration stops and that value is returned. Otherwise, undefined is returned. + * + * @param node a given node to visit its children + * @param cbNode a callback to be invoked for all child nodes + * @param cbNodes a callback to be invoked for embedded array + * + * @remarks `forEachChild` must visit the children of a node in the order + * that they appear in the source code. The language service depends on this property to locate nodes by position. + */ + function forEachChild(node, cbNode, cbNodes) { + if (!node || node.kind <= 152 /* LastToken */) { + return; + } + switch (node.kind) { + case 153 /* QualifiedName */: + return visitNode(cbNode, node.left) || + visitNode(cbNode, node.right); + case 155 /* TypeParameter */: + return visitNode(cbNode, node.name) || + visitNode(cbNode, node.constraint) || + visitNode(cbNode, node.default) || + visitNode(cbNode, node.expression); + case 282 /* ShorthandPropertyAssignment */: + return visitNodes(cbNode, cbNodes, node.decorators) || + visitNodes(cbNode, cbNodes, node.modifiers) || + visitNode(cbNode, node.name) || + visitNode(cbNode, node.questionToken) || + visitNode(cbNode, node.exclamationToken) || + visitNode(cbNode, node.equalsToken) || + visitNode(cbNode, node.objectAssignmentInitializer); + case 283 /* SpreadAssignment */: + return visitNode(cbNode, node.expression); + case 156 /* Parameter */: + return visitNodes(cbNode, cbNodes, node.decorators) || + visitNodes(cbNode, cbNodes, node.modifiers) || + visitNode(cbNode, node.dotDotDotToken) || + visitNode(cbNode, node.name) || + visitNode(cbNode, node.questionToken) || + visitNode(cbNode, node.type) || + visitNode(cbNode, node.initializer); + case 159 /* PropertyDeclaration */: + return visitNodes(cbNode, cbNodes, node.decorators) || + visitNodes(cbNode, cbNodes, node.modifiers) || + visitNode(cbNode, node.name) || + visitNode(cbNode, node.questionToken) || + visitNode(cbNode, node.exclamationToken) || + visitNode(cbNode, node.type) || + visitNode(cbNode, node.initializer); + case 158 /* PropertySignature */: + return visitNodes(cbNode, cbNodes, node.decorators) || + visitNodes(cbNode, cbNodes, node.modifiers) || + visitNode(cbNode, node.name) || + visitNode(cbNode, node.questionToken) || + visitNode(cbNode, node.type) || + visitNode(cbNode, node.initializer); + case 281 /* PropertyAssignment */: + return visitNodes(cbNode, cbNodes, node.decorators) || + visitNodes(cbNode, cbNodes, node.modifiers) || + visitNode(cbNode, node.name) || + visitNode(cbNode, node.questionToken) || + visitNode(cbNode, node.initializer); + case 242 /* VariableDeclaration */: + return visitNodes(cbNode, cbNodes, node.decorators) || + visitNodes(cbNode, cbNodes, node.modifiers) || + visitNode(cbNode, node.name) || + visitNode(cbNode, node.exclamationToken) || + visitNode(cbNode, node.type) || + visitNode(cbNode, node.initializer); + case 191 /* BindingElement */: + return visitNodes(cbNode, cbNodes, node.decorators) || + visitNodes(cbNode, cbNodes, node.modifiers) || + visitNode(cbNode, node.dotDotDotToken) || + visitNode(cbNode, node.propertyName) || + visitNode(cbNode, node.name) || + visitNode(cbNode, node.initializer); + case 170 /* FunctionType */: + case 171 /* ConstructorType */: + case 165 /* CallSignature */: + case 166 /* ConstructSignature */: + case 167 /* IndexSignature */: + return visitNodes(cbNode, cbNodes, node.decorators) || + visitNodes(cbNode, cbNodes, node.modifiers) || + visitNodes(cbNode, cbNodes, node.typeParameters) || + visitNodes(cbNode, cbNodes, node.parameters) || + visitNode(cbNode, node.type); + case 161 /* MethodDeclaration */: + case 160 /* MethodSignature */: + case 162 /* Constructor */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + case 201 /* FunctionExpression */: + case 244 /* FunctionDeclaration */: + case 202 /* ArrowFunction */: + return visitNodes(cbNode, cbNodes, node.decorators) || + visitNodes(cbNode, cbNodes, node.modifiers) || + visitNode(cbNode, node.asteriskToken) || + visitNode(cbNode, node.name) || + visitNode(cbNode, node.questionToken) || + visitNode(cbNode, node.exclamationToken) || + visitNodes(cbNode, cbNodes, node.typeParameters) || + visitNodes(cbNode, cbNodes, node.parameters) || + visitNode(cbNode, node.type) || + visitNode(cbNode, node.equalsGreaterThanToken) || + visitNode(cbNode, node.body); + case 169 /* TypeReference */: + return visitNode(cbNode, node.typeName) || + visitNodes(cbNode, cbNodes, node.typeArguments); + case 168 /* TypePredicate */: + return visitNode(cbNode, node.assertsModifier) || + visitNode(cbNode, node.parameterName) || + visitNode(cbNode, node.type); + case 172 /* TypeQuery */: + return visitNode(cbNode, node.exprName); + case 173 /* TypeLiteral */: + return visitNodes(cbNode, cbNodes, node.members); + case 174 /* ArrayType */: + return visitNode(cbNode, node.elementType); + case 175 /* TupleType */: + return visitNodes(cbNode, cbNodes, node.elementTypes); + case 178 /* UnionType */: + case 179 /* IntersectionType */: + return visitNodes(cbNode, cbNodes, node.types); + case 180 /* ConditionalType */: + return visitNode(cbNode, node.checkType) || + visitNode(cbNode, node.extendsType) || + visitNode(cbNode, node.trueType) || + visitNode(cbNode, node.falseType); + case 181 /* InferType */: + return visitNode(cbNode, node.typeParameter); + case 188 /* ImportType */: + return visitNode(cbNode, node.argument) || + visitNode(cbNode, node.qualifier) || + visitNodes(cbNode, cbNodes, node.typeArguments); + case 182 /* ParenthesizedType */: + case 184 /* TypeOperator */: + return visitNode(cbNode, node.type); + case 185 /* IndexedAccessType */: + return visitNode(cbNode, node.objectType) || + visitNode(cbNode, node.indexType); + case 186 /* MappedType */: + return visitNode(cbNode, node.readonlyToken) || + visitNode(cbNode, node.typeParameter) || + visitNode(cbNode, node.questionToken) || + visitNode(cbNode, node.type); + case 187 /* LiteralType */: + return visitNode(cbNode, node.literal); + case 189 /* ObjectBindingPattern */: + case 190 /* ArrayBindingPattern */: + return visitNodes(cbNode, cbNodes, node.elements); + case 192 /* ArrayLiteralExpression */: + return visitNodes(cbNode, cbNodes, node.elements); + case 193 /* ObjectLiteralExpression */: + return visitNodes(cbNode, cbNodes, node.properties); + case 194 /* PropertyAccessExpression */: + return visitNode(cbNode, node.expression) || + visitNode(cbNode, node.questionDotToken) || + visitNode(cbNode, node.name); + case 195 /* ElementAccessExpression */: + return visitNode(cbNode, node.expression) || + visitNode(cbNode, node.questionDotToken) || + visitNode(cbNode, node.argumentExpression); + case 196 /* CallExpression */: + case 197 /* NewExpression */: + return visitNode(cbNode, node.expression) || + visitNode(cbNode, node.questionDotToken) || + visitNodes(cbNode, cbNodes, node.typeArguments) || + visitNodes(cbNode, cbNodes, node.arguments); + case 198 /* TaggedTemplateExpression */: + return visitNode(cbNode, node.tag) || + visitNode(cbNode, node.questionDotToken) || + visitNodes(cbNode, cbNodes, node.typeArguments) || + visitNode(cbNode, node.template); + case 199 /* TypeAssertionExpression */: + return visitNode(cbNode, node.type) || + visitNode(cbNode, node.expression); + case 200 /* ParenthesizedExpression */: + return visitNode(cbNode, node.expression); + case 203 /* DeleteExpression */: + return visitNode(cbNode, node.expression); + case 204 /* TypeOfExpression */: + return visitNode(cbNode, node.expression); + case 205 /* VoidExpression */: + return visitNode(cbNode, node.expression); + case 207 /* PrefixUnaryExpression */: + return visitNode(cbNode, node.operand); + case 212 /* YieldExpression */: + return visitNode(cbNode, node.asteriskToken) || + visitNode(cbNode, node.expression); + case 206 /* AwaitExpression */: + return visitNode(cbNode, node.expression); + case 208 /* PostfixUnaryExpression */: + return visitNode(cbNode, node.operand); + case 209 /* BinaryExpression */: + return visitNode(cbNode, node.left) || + visitNode(cbNode, node.operatorToken) || + visitNode(cbNode, node.right); + case 217 /* AsExpression */: + return visitNode(cbNode, node.expression) || + visitNode(cbNode, node.type); + case 218 /* NonNullExpression */: + return visitNode(cbNode, node.expression); + case 219 /* MetaProperty */: + return visitNode(cbNode, node.name); + case 210 /* ConditionalExpression */: + return visitNode(cbNode, node.condition) || + visitNode(cbNode, node.questionToken) || + visitNode(cbNode, node.whenTrue) || + visitNode(cbNode, node.colonToken) || + visitNode(cbNode, node.whenFalse); + case 213 /* SpreadElement */: + return visitNode(cbNode, node.expression); + case 223 /* Block */: + case 250 /* ModuleBlock */: + return visitNodes(cbNode, cbNodes, node.statements); + case 290 /* SourceFile */: + return visitNodes(cbNode, cbNodes, node.statements) || + visitNode(cbNode, node.endOfFileToken); + case 225 /* VariableStatement */: + return visitNodes(cbNode, cbNodes, node.decorators) || + visitNodes(cbNode, cbNodes, node.modifiers) || + visitNode(cbNode, node.declarationList); + case 243 /* VariableDeclarationList */: + return visitNodes(cbNode, cbNodes, node.declarations); + case 226 /* ExpressionStatement */: + return visitNode(cbNode, node.expression); + case 227 /* IfStatement */: + return visitNode(cbNode, node.expression) || + visitNode(cbNode, node.thenStatement) || + visitNode(cbNode, node.elseStatement); + case 228 /* DoStatement */: + return visitNode(cbNode, node.statement) || + visitNode(cbNode, node.expression); + case 229 /* WhileStatement */: + return visitNode(cbNode, node.expression) || + visitNode(cbNode, node.statement); + case 230 /* ForStatement */: + return visitNode(cbNode, node.initializer) || + visitNode(cbNode, node.condition) || + visitNode(cbNode, node.incrementor) || + visitNode(cbNode, node.statement); + case 231 /* ForInStatement */: + return visitNode(cbNode, node.initializer) || + visitNode(cbNode, node.expression) || + visitNode(cbNode, node.statement); + case 232 /* ForOfStatement */: + return visitNode(cbNode, node.awaitModifier) || + visitNode(cbNode, node.initializer) || + visitNode(cbNode, node.expression) || + visitNode(cbNode, node.statement); + case 233 /* ContinueStatement */: + case 234 /* BreakStatement */: + return visitNode(cbNode, node.label); + case 235 /* ReturnStatement */: + return visitNode(cbNode, node.expression); + case 236 /* WithStatement */: + return visitNode(cbNode, node.expression) || + visitNode(cbNode, node.statement); + case 237 /* SwitchStatement */: + return visitNode(cbNode, node.expression) || + visitNode(cbNode, node.caseBlock); + case 251 /* CaseBlock */: + return visitNodes(cbNode, cbNodes, node.clauses); + case 277 /* CaseClause */: + return visitNode(cbNode, node.expression) || + visitNodes(cbNode, cbNodes, node.statements); + case 278 /* DefaultClause */: + return visitNodes(cbNode, cbNodes, node.statements); + case 238 /* LabeledStatement */: + return visitNode(cbNode, node.label) || + visitNode(cbNode, node.statement); + case 239 /* ThrowStatement */: + return visitNode(cbNode, node.expression); + case 240 /* TryStatement */: + return visitNode(cbNode, node.tryBlock) || + visitNode(cbNode, node.catchClause) || + visitNode(cbNode, node.finallyBlock); + case 280 /* CatchClause */: + return visitNode(cbNode, node.variableDeclaration) || + visitNode(cbNode, node.block); + case 157 /* Decorator */: + return visitNode(cbNode, node.expression); + case 245 /* ClassDeclaration */: + case 214 /* ClassExpression */: + return visitNodes(cbNode, cbNodes, node.decorators) || + visitNodes(cbNode, cbNodes, node.modifiers) || + visitNode(cbNode, node.name) || + visitNodes(cbNode, cbNodes, node.typeParameters) || + visitNodes(cbNode, cbNodes, node.heritageClauses) || + visitNodes(cbNode, cbNodes, node.members); + case 246 /* InterfaceDeclaration */: + return visitNodes(cbNode, cbNodes, node.decorators) || + visitNodes(cbNode, cbNodes, node.modifiers) || + visitNode(cbNode, node.name) || + visitNodes(cbNode, cbNodes, node.typeParameters) || + visitNodes(cbNode, cbNodes, node.heritageClauses) || + visitNodes(cbNode, cbNodes, node.members); + case 247 /* TypeAliasDeclaration */: + return visitNodes(cbNode, cbNodes, node.decorators) || + visitNodes(cbNode, cbNodes, node.modifiers) || + visitNode(cbNode, node.name) || + visitNodes(cbNode, cbNodes, node.typeParameters) || + visitNode(cbNode, node.type); + case 248 /* EnumDeclaration */: + return visitNodes(cbNode, cbNodes, node.decorators) || + visitNodes(cbNode, cbNodes, node.modifiers) || + visitNode(cbNode, node.name) || + visitNodes(cbNode, cbNodes, node.members); + case 284 /* EnumMember */: + return visitNode(cbNode, node.name) || + visitNode(cbNode, node.initializer); + case 249 /* ModuleDeclaration */: + return visitNodes(cbNode, cbNodes, node.decorators) || + visitNodes(cbNode, cbNodes, node.modifiers) || + visitNode(cbNode, node.name) || + visitNode(cbNode, node.body); + case 253 /* ImportEqualsDeclaration */: + return visitNodes(cbNode, cbNodes, node.decorators) || + visitNodes(cbNode, cbNodes, node.modifiers) || + visitNode(cbNode, node.name) || + visitNode(cbNode, node.moduleReference); + case 254 /* ImportDeclaration */: + return visitNodes(cbNode, cbNodes, node.decorators) || + visitNodes(cbNode, cbNodes, node.modifiers) || + visitNode(cbNode, node.importClause) || + visitNode(cbNode, node.moduleSpecifier); + case 255 /* ImportClause */: + return visitNode(cbNode, node.name) || + visitNode(cbNode, node.namedBindings); + case 252 /* NamespaceExportDeclaration */: + return visitNode(cbNode, node.name); + case 256 /* NamespaceImport */: + return visitNode(cbNode, node.name); + case 262 /* NamespaceExport */: + return visitNode(cbNode, node.name); + case 257 /* NamedImports */: + case 261 /* NamedExports */: + return visitNodes(cbNode, cbNodes, node.elements); + case 260 /* ExportDeclaration */: + return visitNodes(cbNode, cbNodes, node.decorators) || + visitNodes(cbNode, cbNodes, node.modifiers) || + visitNode(cbNode, node.exportClause) || + visitNode(cbNode, node.moduleSpecifier); + case 258 /* ImportSpecifier */: + case 263 /* ExportSpecifier */: + return visitNode(cbNode, node.propertyName) || + visitNode(cbNode, node.name); + case 259 /* ExportAssignment */: + return visitNodes(cbNode, cbNodes, node.decorators) || + visitNodes(cbNode, cbNodes, node.modifiers) || + visitNode(cbNode, node.expression); + case 211 /* TemplateExpression */: + return visitNode(cbNode, node.head) || visitNodes(cbNode, cbNodes, node.templateSpans); + case 221 /* TemplateSpan */: + return visitNode(cbNode, node.expression) || visitNode(cbNode, node.literal); + case 154 /* ComputedPropertyName */: + return visitNode(cbNode, node.expression); + case 279 /* HeritageClause */: + return visitNodes(cbNode, cbNodes, node.types); + case 216 /* ExpressionWithTypeArguments */: + return visitNode(cbNode, node.expression) || + visitNodes(cbNode, cbNodes, node.typeArguments); + case 265 /* ExternalModuleReference */: + return visitNode(cbNode, node.expression); + case 264 /* MissingDeclaration */: + return visitNodes(cbNode, cbNodes, node.decorators); + case 327 /* CommaListExpression */: + return visitNodes(cbNode, cbNodes, node.elements); + case 266 /* JsxElement */: + return visitNode(cbNode, node.openingElement) || + visitNodes(cbNode, cbNodes, node.children) || + visitNode(cbNode, node.closingElement); + case 270 /* JsxFragment */: + return visitNode(cbNode, node.openingFragment) || + visitNodes(cbNode, cbNodes, node.children) || + visitNode(cbNode, node.closingFragment); + case 267 /* JsxSelfClosingElement */: + case 268 /* JsxOpeningElement */: + return visitNode(cbNode, node.tagName) || + visitNodes(cbNode, cbNodes, node.typeArguments) || + visitNode(cbNode, node.attributes); + case 274 /* JsxAttributes */: + return visitNodes(cbNode, cbNodes, node.properties); + case 273 /* JsxAttribute */: + return visitNode(cbNode, node.name) || + visitNode(cbNode, node.initializer); + case 275 /* JsxSpreadAttribute */: + return visitNode(cbNode, node.expression); + case 276 /* JsxExpression */: + return visitNode(cbNode, node.dotDotDotToken) || + visitNode(cbNode, node.expression); + case 269 /* JsxClosingElement */: + return visitNode(cbNode, node.tagName); + case 176 /* OptionalType */: + case 177 /* RestType */: + case 294 /* JSDocTypeExpression */: + case 298 /* JSDocNonNullableType */: + case 297 /* JSDocNullableType */: + case 299 /* JSDocOptionalType */: + case 301 /* JSDocVariadicType */: + return visitNode(cbNode, node.type); + case 300 /* JSDocFunctionType */: + return visitNodes(cbNode, cbNodes, node.parameters) || + visitNode(cbNode, node.type); + case 303 /* JSDocComment */: + return visitNodes(cbNode, cbNodes, node.tags); + case 317 /* JSDocParameterTag */: + case 323 /* JSDocPropertyTag */: + return visitNode(cbNode, node.tagName) || + (node.isNameFirst + ? visitNode(cbNode, node.name) || + visitNode(cbNode, node.typeExpression) + : visitNode(cbNode, node.typeExpression) || + visitNode(cbNode, node.name)); + case 309 /* JSDocAuthorTag */: + return visitNode(cbNode, node.tagName); + case 308 /* JSDocImplementsTag */: + return visitNode(cbNode, node.tagName) || + visitNode(cbNode, node.class); + case 307 /* JSDocAugmentsTag */: + return visitNode(cbNode, node.tagName) || + visitNode(cbNode, node.class); + case 321 /* JSDocTemplateTag */: + return visitNode(cbNode, node.tagName) || + visitNode(cbNode, node.constraint) || + visitNodes(cbNode, cbNodes, node.typeParameters); + case 322 /* JSDocTypedefTag */: + return visitNode(cbNode, node.tagName) || + (node.typeExpression && + node.typeExpression.kind === 294 /* JSDocTypeExpression */ + ? visitNode(cbNode, node.typeExpression) || + visitNode(cbNode, node.fullName) + : visitNode(cbNode, node.fullName) || + visitNode(cbNode, node.typeExpression)); + case 315 /* JSDocCallbackTag */: + return visitNode(cbNode, node.tagName) || + visitNode(cbNode, node.fullName) || + visitNode(cbNode, node.typeExpression); + case 318 /* JSDocReturnTag */: + case 320 /* JSDocTypeTag */: + case 319 /* JSDocThisTag */: + case 316 /* JSDocEnumTag */: + return visitNode(cbNode, node.tagName) || + visitNode(cbNode, node.typeExpression); + case 305 /* JSDocSignature */: + return ts.forEach(node.typeParameters, cbNode) || + ts.forEach(node.parameters, cbNode) || + visitNode(cbNode, node.type); + case 304 /* JSDocTypeLiteral */: + return ts.forEach(node.jsDocPropertyTags, cbNode); + case 306 /* JSDocTag */: + case 310 /* JSDocClassTag */: + case 311 /* JSDocPublicTag */: + case 312 /* JSDocPrivateTag */: + case 313 /* JSDocProtectedTag */: + case 314 /* JSDocReadonlyTag */: + return visitNode(cbNode, node.tagName); + case 326 /* PartiallyEmittedExpression */: + return visitNode(cbNode, node.expression); + } + } + ts.forEachChild = forEachChild; + /** @internal */ + /** + * Invokes a callback for each child of the given node. The 'cbNode' callback is invoked for all child nodes + * stored in properties. If a 'cbNodes' callback is specified, it is invoked for embedded arrays; additionally, + * unlike `forEachChild`, embedded arrays are flattened and the 'cbNode' callback is invoked for each element. + * If a callback returns a truthy value, iteration stops and that value is returned. Otherwise, undefined is returned. + * + * @param node a given node to visit its children + * @param cbNode a callback to be invoked for all child nodes + * @param cbNodes a callback to be invoked for embedded array + * + * @remarks Unlike `forEachChild`, `forEachChildRecursively` handles recursively invoking the traversal on each child node found, + * and while doing so, handles traversing the structure without relying on the callstack to encode the tree structure. + */ + function forEachChildRecursively(rootNode, cbNode, cbNodes) { + var stack = [rootNode]; + while (stack.length) { + var parent = stack.pop(); + var res = visitAllPossibleChildren(parent, gatherPossibleChildren(parent)); + if (res) { + return res; + } + } + return; + function gatherPossibleChildren(node) { + var children = []; + forEachChild(node, addWorkItem, addWorkItem); // By using a stack above and `unshift` here, we emulate a depth-first preorder traversal + return children; + function addWorkItem(n) { + children.unshift(n); + } + } + function visitAllPossibleChildren(parent, children) { + for (var _i = 0, children_1 = children; _i < children_1.length; _i++) { + var child = children_1[_i]; + if (ts.isArray(child)) { + if (cbNodes) { + var res = cbNodes(child, parent); + if (res) { + if (res === "skip") + continue; + return res; + } + } + for (var i = child.length - 1; i >= 0; i--) { + var realChild = child[i]; + var res = cbNode(realChild, parent); + if (res) { + if (res === "skip") + continue; + return res; + } + stack.push(realChild); + } + } + else { + stack.push(child); + var res = cbNode(child, parent); + if (res) { + if (res === "skip") + continue; + return res; + } + } + } + } + } + ts.forEachChildRecursively = forEachChildRecursively; + function createSourceFile(fileName, sourceText, languageVersion, setParentNodes, scriptKind) { + if (setParentNodes === void 0) { setParentNodes = false; } + ts.performance.mark("beforeParse"); + var result; + ts.perfLogger.logStartParseSourceFile(fileName); + if (languageVersion === 100 /* JSON */) { + result = Parser.parseSourceFile(fileName, sourceText, languageVersion, /*syntaxCursor*/ undefined, setParentNodes, 6 /* JSON */); + } + else { + result = Parser.parseSourceFile(fileName, sourceText, languageVersion, /*syntaxCursor*/ undefined, setParentNodes, scriptKind); + } + ts.perfLogger.logStopParseSourceFile(); + ts.performance.mark("afterParse"); + ts.performance.measure("Parse", "beforeParse", "afterParse"); + return result; + } + ts.createSourceFile = createSourceFile; + function parseIsolatedEntityName(text, languageVersion) { + return Parser.parseIsolatedEntityName(text, languageVersion); + } + ts.parseIsolatedEntityName = parseIsolatedEntityName; + /** + * Parse json text into SyntaxTree and return node and parse errors if any + * @param fileName + * @param sourceText + */ + function parseJsonText(fileName, sourceText) { + return Parser.parseJsonText(fileName, sourceText); + } + ts.parseJsonText = parseJsonText; + // See also `isExternalOrCommonJsModule` in utilities.ts + function isExternalModule(file) { + return file.externalModuleIndicator !== undefined; + } + ts.isExternalModule = isExternalModule; + // Produces a new SourceFile for the 'newText' provided. The 'textChangeRange' parameter + // indicates what changed between the 'text' that this SourceFile has and the 'newText'. + // The SourceFile will be created with the compiler attempting to reuse as many nodes from + // this file as possible. + // + // Note: this function mutates nodes from this SourceFile. That means any existing nodes + // from this SourceFile that are being held onto may change as a result (including + // becoming detached from any SourceFile). It is recommended that this SourceFile not + // be used once 'update' is called on it. + function updateSourceFile(sourceFile, newText, textChangeRange, aggressiveChecks) { + if (aggressiveChecks === void 0) { aggressiveChecks = false; } + var newSourceFile = IncrementalParser.updateSourceFile(sourceFile, newText, textChangeRange, aggressiveChecks); + // Because new source file node is created, it may not have the flag PossiblyContainDynamicImport. This is the case if there is no new edit to add dynamic import. + // We will manually port the flag to the new source file. + newSourceFile.flags |= (sourceFile.flags & 3145728 /* PermanentlySetIncrementalFlags */); + return newSourceFile; + } + ts.updateSourceFile = updateSourceFile; + /* @internal */ + function parseIsolatedJSDocComment(content, start, length) { + var result = Parser.JSDocParser.parseIsolatedJSDocComment(content, start, length); + if (result && result.jsDoc) { + // because the jsDocComment was parsed out of the source file, it might + // not be covered by the fixupParentReferences. + Parser.fixupParentReferences(result.jsDoc); + } + return result; + } + ts.parseIsolatedJSDocComment = parseIsolatedJSDocComment; + /* @internal */ + // Exposed only for testing. + function parseJSDocTypeExpressionForTests(content, start, length) { + return Parser.JSDocParser.parseJSDocTypeExpressionForTests(content, start, length); + } + ts.parseJSDocTypeExpressionForTests = parseJSDocTypeExpressionForTests; + // Implement the parser as a singleton module. We do this for perf reasons because creating + // parser instances can actually be expensive enough to impact us on projects with many source + // files. + var Parser; + (function (Parser) { + // Share a single scanner across all calls to parse a source file. This helps speed things + // up by avoiding the cost of creating/compiling scanners over and over again. + var scanner = ts.createScanner(99 /* Latest */, /*skipTrivia*/ true); + var disallowInAndDecoratorContext = 4096 /* DisallowInContext */ | 16384 /* DecoratorContext */; + // capture constructors in 'initializeState' to avoid null checks + var NodeConstructor; + var TokenConstructor; + var IdentifierConstructor; + var PrivateIdentifierConstructor; + var SourceFileConstructor; + var sourceFile; + var parseDiagnostics; + var syntaxCursor; + var currentToken; + var sourceText; + var nodeCount; + var identifiers; + var privateIdentifiers; + var identifierCount; + var parsingContext; + var notParenthesizedArrow; + // Flags that dictate what parsing context we're in. For example: + // Whether or not we are in strict parsing mode. All that changes in strict parsing mode is + // that some tokens that would be considered identifiers may be considered keywords. + // + // When adding more parser context flags, consider which is the more common case that the + // flag will be in. This should be the 'false' state for that flag. The reason for this is + // that we don't store data in our nodes unless the value is in the *non-default* state. So, + // for example, more often than code 'allows-in' (or doesn't 'disallow-in'). We opt for + // 'disallow-in' set to 'false'. Otherwise, if we had 'allowsIn' set to 'true', then almost + // all nodes would need extra state on them to store this info. + // + // Note: 'allowIn' and 'allowYield' track 1:1 with the [in] and [yield] concepts in the ES6 + // grammar specification. + // + // An important thing about these context concepts. By default they are effectively inherited + // while parsing through every grammar production. i.e. if you don't change them, then when + // you parse a sub-production, it will have the same context values as the parent production. + // This is great most of the time. After all, consider all the 'expression' grammar productions + // and how nearly all of them pass along the 'in' and 'yield' context values: + // + // EqualityExpression[In, Yield] : + // RelationalExpression[?In, ?Yield] + // EqualityExpression[?In, ?Yield] == RelationalExpression[?In, ?Yield] + // EqualityExpression[?In, ?Yield] != RelationalExpression[?In, ?Yield] + // EqualityExpression[?In, ?Yield] === RelationalExpression[?In, ?Yield] + // EqualityExpression[?In, ?Yield] !== RelationalExpression[?In, ?Yield] + // + // Where you have to be careful is then understanding what the points are in the grammar + // where the values are *not* passed along. For example: + // + // SingleNameBinding[Yield,GeneratorParameter] + // [+GeneratorParameter]BindingIdentifier[Yield] Initializer[In]opt + // [~GeneratorParameter]BindingIdentifier[?Yield]Initializer[In, ?Yield]opt + // + // Here this is saying that if the GeneratorParameter context flag is set, that we should + // explicitly set the 'yield' context flag to false before calling into the BindingIdentifier + // and we should explicitly unset the 'yield' context flag before calling into the Initializer. + // production. Conversely, if the GeneratorParameter context flag is not set, then we + // should leave the 'yield' context flag alone. + // + // Getting this all correct is tricky and requires careful reading of the grammar to + // understand when these values should be changed versus when they should be inherited. + // + // Note: it should not be necessary to save/restore these flags during speculative/lookahead + // parsing. These context flags are naturally stored and restored through normal recursive + // descent parsing and unwinding. + var contextFlags; + // Whether or not we've had a parse error since creating the last AST node. If we have + // encountered an error, it will be stored on the next AST node we create. Parse errors + // can be broken down into three categories: + // + // 1) An error that occurred during scanning. For example, an unterminated literal, or a + // character that was completely not understood. + // + // 2) A token was expected, but was not present. This type of error is commonly produced + // by the 'parseExpected' function. + // + // 3) A token was present that no parsing function was able to consume. This type of error + // only occurs in the 'abortParsingListOrMoveToNextToken' function when the parser + // decides to skip the token. + // + // In all of these cases, we want to mark the next node as having had an error before it. + // With this mark, we can know in incremental settings if this node can be reused, or if + // we have to reparse it. If we don't keep this information around, we may just reuse the + // node. in that event we would then not produce the same errors as we did before, causing + // significant confusion problems. + // + // Note: it is necessary that this value be saved/restored during speculative/lookahead + // parsing. During lookahead parsing, we will often create a node. That node will have + // this value attached, and then this value will be set back to 'false'. If we decide to + // rewind, we must get back to the same value we had prior to the lookahead. + // + // Note: any errors at the end of the file that do not precede a regular node, should get + // attached to the EOF token. + var parseErrorBeforeNextFinishedNode = false; + function parseSourceFile(fileName, sourceText, languageVersion, syntaxCursor, setParentNodes, scriptKind) { + if (setParentNodes === void 0) { setParentNodes = false; } + scriptKind = ts.ensureScriptKind(fileName, scriptKind); + if (scriptKind === 6 /* JSON */) { + var result_2 = parseJsonText(fileName, sourceText, languageVersion, syntaxCursor, setParentNodes); + ts.convertToObjectWorker(result_2, result_2.parseDiagnostics, /*returnValue*/ false, /*knownRootOptions*/ undefined, /*jsonConversionNotifier*/ undefined); + result_2.referencedFiles = ts.emptyArray; + result_2.typeReferenceDirectives = ts.emptyArray; + result_2.libReferenceDirectives = ts.emptyArray; + result_2.amdDependencies = ts.emptyArray; + result_2.hasNoDefaultLib = false; + result_2.pragmas = ts.emptyMap; + return result_2; + } + initializeState(sourceText, languageVersion, syntaxCursor, scriptKind); + var result = parseSourceFileWorker(fileName, languageVersion, setParentNodes, scriptKind); + clearState(); + return result; + } + Parser.parseSourceFile = parseSourceFile; + function parseIsolatedEntityName(content, languageVersion) { + // Choice of `isDeclarationFile` should be arbitrary + initializeState(content, languageVersion, /*syntaxCursor*/ undefined, 1 /* JS */); + // Prime the scanner. + nextToken(); + var entityName = parseEntityName(/*allowReservedWords*/ true); + var isInvalid = token() === 1 /* EndOfFileToken */ && !parseDiagnostics.length; + clearState(); + return isInvalid ? entityName : undefined; + } + Parser.parseIsolatedEntityName = parseIsolatedEntityName; + function parseJsonText(fileName, sourceText, languageVersion, syntaxCursor, setParentNodes) { + if (languageVersion === void 0) { languageVersion = 2 /* ES2015 */; } + initializeState(sourceText, languageVersion, syntaxCursor, 6 /* JSON */); + // Set source file so that errors will be reported with this file name + sourceFile = createSourceFile(fileName, 2 /* ES2015 */, 6 /* JSON */, /*isDeclaration*/ false); + sourceFile.flags = contextFlags; + // Prime the scanner. + nextToken(); + var pos = getNodePos(); + if (token() === 1 /* EndOfFileToken */) { + sourceFile.statements = createNodeArray([], pos, pos); + sourceFile.endOfFileToken = parseTokenNode(); + } + else { + var statement = createNode(226 /* ExpressionStatement */); + switch (token()) { + case 22 /* OpenBracketToken */: + statement.expression = parseArrayLiteralExpression(); + break; + case 106 /* TrueKeyword */: + case 91 /* FalseKeyword */: + case 100 /* NullKeyword */: + statement.expression = parseTokenNode(); + break; + case 40 /* MinusToken */: + if (lookAhead(function () { return nextToken() === 8 /* NumericLiteral */ && nextToken() !== 58 /* ColonToken */; })) { + statement.expression = parsePrefixUnaryExpression(); + } + else { + statement.expression = parseObjectLiteralExpression(); + } + break; + case 8 /* NumericLiteral */: + case 10 /* StringLiteral */: + if (lookAhead(function () { return nextToken() !== 58 /* ColonToken */; })) { + statement.expression = parseLiteralNode(); + break; + } + // falls through + default: + statement.expression = parseObjectLiteralExpression(); + break; + } + finishNode(statement); + sourceFile.statements = createNodeArray([statement], pos); + sourceFile.endOfFileToken = parseExpectedToken(1 /* EndOfFileToken */, ts.Diagnostics.Unexpected_token); + } + if (setParentNodes) { + fixupParentReferences(sourceFile); + } + sourceFile.nodeCount = nodeCount; + sourceFile.identifierCount = identifierCount; + sourceFile.identifiers = identifiers; + sourceFile.parseDiagnostics = parseDiagnostics; + var result = sourceFile; + clearState(); + return result; + } + Parser.parseJsonText = parseJsonText; + function getLanguageVariant(scriptKind) { + // .tsx and .jsx files are treated as jsx language variant. + return scriptKind === 4 /* TSX */ || scriptKind === 2 /* JSX */ || scriptKind === 1 /* JS */ || scriptKind === 6 /* JSON */ ? 1 /* JSX */ : 0 /* Standard */; + } + function initializeState(_sourceText, languageVersion, _syntaxCursor, scriptKind) { + NodeConstructor = ts.objectAllocator.getNodeConstructor(); + TokenConstructor = ts.objectAllocator.getTokenConstructor(); + IdentifierConstructor = ts.objectAllocator.getIdentifierConstructor(); + PrivateIdentifierConstructor = ts.objectAllocator.getPrivateIdentifierConstructor(); + SourceFileConstructor = ts.objectAllocator.getSourceFileConstructor(); + sourceText = _sourceText; + syntaxCursor = _syntaxCursor; + parseDiagnostics = []; + parsingContext = 0; + identifiers = ts.createMap(); + privateIdentifiers = ts.createMap(); + identifierCount = 0; + nodeCount = 0; + switch (scriptKind) { + case 1 /* JS */: + case 2 /* JSX */: + contextFlags = 131072 /* JavaScriptFile */; + break; + case 6 /* JSON */: + contextFlags = 131072 /* JavaScriptFile */ | 33554432 /* JsonFile */; + break; + default: + contextFlags = 0 /* None */; + break; + } + parseErrorBeforeNextFinishedNode = false; + // Initialize and prime the scanner before parsing the source elements. + scanner.setText(sourceText); + scanner.setOnError(scanError); + scanner.setScriptTarget(languageVersion); + scanner.setLanguageVariant(getLanguageVariant(scriptKind)); + } + function clearState() { + // Clear out the text the scanner is pointing at, so it doesn't keep anything alive unnecessarily. + scanner.clearCommentDirectives(); + scanner.setText(""); + scanner.setOnError(undefined); + // Clear any data. We don't want to accidentally hold onto it for too long. + parseDiagnostics = undefined; + sourceFile = undefined; + identifiers = undefined; + syntaxCursor = undefined; + sourceText = undefined; + notParenthesizedArrow = undefined; + } + function parseSourceFileWorker(fileName, languageVersion, setParentNodes, scriptKind) { + var isDeclarationFile = isDeclarationFileName(fileName); + if (isDeclarationFile) { + contextFlags |= 8388608 /* Ambient */; + } + sourceFile = createSourceFile(fileName, languageVersion, scriptKind, isDeclarationFile); + sourceFile.flags = contextFlags; + // Prime the scanner. + nextToken(); + // A member of ReadonlyArray isn't assignable to a member of T[] (and prevents a direct cast) - but this is where we set up those members so they can be readonly in the future + processCommentPragmas(sourceFile, sourceText); + processPragmasIntoFields(sourceFile, reportPragmaDiagnostic); + sourceFile.statements = parseList(0 /* SourceElements */, parseStatement); + ts.Debug.assert(token() === 1 /* EndOfFileToken */); + sourceFile.endOfFileToken = addJSDocComment(parseTokenNode()); + setExternalModuleIndicator(sourceFile); + sourceFile.commentDirectives = scanner.getCommentDirectives(); + sourceFile.nodeCount = nodeCount; + sourceFile.identifierCount = identifierCount; + sourceFile.identifiers = identifiers; + sourceFile.parseDiagnostics = parseDiagnostics; + if (setParentNodes) { + fixupParentReferences(sourceFile); + } + return sourceFile; + function reportPragmaDiagnostic(pos, end, diagnostic) { + parseDiagnostics.push(ts.createFileDiagnostic(sourceFile, pos, end, diagnostic)); + } + } + function addJSDocComment(node) { + ts.Debug.assert(!node.jsDoc); // Should only be called once per node + var jsDoc = ts.mapDefined(ts.getJSDocCommentRanges(node, sourceFile.text), function (comment) { return JSDocParser.parseJSDocComment(node, comment.pos, comment.end - comment.pos); }); + if (jsDoc.length) + node.jsDoc = jsDoc; + return node; + } + function fixupParentReferences(rootNode) { + // normally parent references are set during binding. However, for clients that only need + // a syntax tree, and no semantic features, then the binding process is an unnecessary + // overhead. This functions allows us to set all the parents, without all the expense of + // binding. + forEachChildRecursively(rootNode, bindParentToChild); + function bindParentToChild(child, parent) { + child.parent = parent; + if (ts.hasJSDocNodes(child)) { + for (var _i = 0, _a = child.jsDoc; _i < _a.length; _i++) { + var doc = _a[_i]; + bindParentToChild(doc, child); + forEachChildRecursively(doc, bindParentToChild); + } + } + } + } + Parser.fixupParentReferences = fixupParentReferences; + function createSourceFile(fileName, languageVersion, scriptKind, isDeclarationFile) { + // code from createNode is inlined here so createNode won't have to deal with special case of creating source files + // this is quite rare comparing to other nodes and createNode should be as fast as possible + var sourceFile = new SourceFileConstructor(290 /* SourceFile */, /*pos*/ 0, /* end */ sourceText.length); + nodeCount++; + sourceFile.text = sourceText; + sourceFile.bindDiagnostics = []; + sourceFile.bindSuggestionDiagnostics = undefined; + sourceFile.languageVersion = languageVersion; + sourceFile.fileName = ts.normalizePath(fileName); + sourceFile.languageVariant = getLanguageVariant(scriptKind); + sourceFile.isDeclarationFile = isDeclarationFile; + sourceFile.scriptKind = scriptKind; + return sourceFile; + } + function setContextFlag(val, flag) { + if (val) { + contextFlags |= flag; + } + else { + contextFlags &= ~flag; + } + } + function setDisallowInContext(val) { + setContextFlag(val, 4096 /* DisallowInContext */); + } + function setYieldContext(val) { + setContextFlag(val, 8192 /* YieldContext */); + } + function setDecoratorContext(val) { + setContextFlag(val, 16384 /* DecoratorContext */); + } + function setAwaitContext(val) { + setContextFlag(val, 32768 /* AwaitContext */); + } + function doOutsideOfContext(context, func) { + // contextFlagsToClear will contain only the context flags that are + // currently set that we need to temporarily clear + // We don't just blindly reset to the previous flags to ensure + // that we do not mutate cached flags for the incremental + // parser (ThisNodeHasError, ThisNodeOrAnySubNodesHasError, and + // HasAggregatedChildData). + var contextFlagsToClear = context & contextFlags; + if (contextFlagsToClear) { + // clear the requested context flags + setContextFlag(/*val*/ false, contextFlagsToClear); + var result = func(); + // restore the context flags we just cleared + setContextFlag(/*val*/ true, contextFlagsToClear); + return result; + } + // no need to do anything special as we are not in any of the requested contexts + return func(); + } + function doInsideOfContext(context, func) { + // contextFlagsToSet will contain only the context flags that + // are not currently set that we need to temporarily enable. + // We don't just blindly reset to the previous flags to ensure + // that we do not mutate cached flags for the incremental + // parser (ThisNodeHasError, ThisNodeOrAnySubNodesHasError, and + // HasAggregatedChildData). + var contextFlagsToSet = context & ~contextFlags; + if (contextFlagsToSet) { + // set the requested context flags + setContextFlag(/*val*/ true, contextFlagsToSet); + var result = func(); + // reset the context flags we just set + setContextFlag(/*val*/ false, contextFlagsToSet); + return result; + } + // no need to do anything special as we are already in all of the requested contexts + return func(); + } + function allowInAnd(func) { + return doOutsideOfContext(4096 /* DisallowInContext */, func); + } + function disallowInAnd(func) { + return doInsideOfContext(4096 /* DisallowInContext */, func); + } + function doInYieldContext(func) { + return doInsideOfContext(8192 /* YieldContext */, func); + } + function doInDecoratorContext(func) { + return doInsideOfContext(16384 /* DecoratorContext */, func); + } + function doInAwaitContext(func) { + return doInsideOfContext(32768 /* AwaitContext */, func); + } + function doOutsideOfAwaitContext(func) { + return doOutsideOfContext(32768 /* AwaitContext */, func); + } + function doInYieldAndAwaitContext(func) { + return doInsideOfContext(8192 /* YieldContext */ | 32768 /* AwaitContext */, func); + } + function doOutsideOfYieldAndAwaitContext(func) { + return doOutsideOfContext(8192 /* YieldContext */ | 32768 /* AwaitContext */, func); + } + function inContext(flags) { + return (contextFlags & flags) !== 0; + } + function inYieldContext() { + return inContext(8192 /* YieldContext */); + } + function inDisallowInContext() { + return inContext(4096 /* DisallowInContext */); + } + function inDecoratorContext() { + return inContext(16384 /* DecoratorContext */); + } + function inAwaitContext() { + return inContext(32768 /* AwaitContext */); + } + function parseErrorAtCurrentToken(message, arg0) { + parseErrorAt(scanner.getTokenPos(), scanner.getTextPos(), message, arg0); + } + function parseErrorAtPosition(start, length, message, arg0) { + // Don't report another error if it would just be at the same position as the last error. + var lastError = ts.lastOrUndefined(parseDiagnostics); + if (!lastError || start !== lastError.start) { + parseDiagnostics.push(ts.createFileDiagnostic(sourceFile, start, length, message, arg0)); + } + // Mark that we've encountered an error. We'll set an appropriate bit on the next + // node we finish so that it can't be reused incrementally. + parseErrorBeforeNextFinishedNode = true; + } + function parseErrorAt(start, end, message, arg0) { + parseErrorAtPosition(start, end - start, message, arg0); + } + function parseErrorAtRange(range, message, arg0) { + parseErrorAt(range.pos, range.end, message, arg0); + } + function scanError(message, length) { + parseErrorAtPosition(scanner.getTextPos(), length, message); + } + function getNodePos() { + return scanner.getStartPos(); + } + // Use this function to access the current token instead of reading the currentToken + // variable. Since function results aren't narrowed in control flow analysis, this ensures + // that the type checker doesn't make wrong assumptions about the type of the current + // token (e.g. a call to nextToken() changes the current token but the checker doesn't + // reason about this side effect). Mainstream VMs inline simple functions like this, so + // there is no performance penalty. + function token() { + return currentToken; + } + function nextTokenWithoutCheck() { + return currentToken = scanner.scan(); + } + function nextToken() { + // if the keyword had an escape + if (ts.isKeyword(currentToken) && (scanner.hasUnicodeEscape() || scanner.hasExtendedUnicodeEscape())) { + // issue a parse error for the escape + parseErrorAt(scanner.getTokenPos(), scanner.getTextPos(), ts.Diagnostics.Keywords_cannot_contain_escape_characters); + } + return nextTokenWithoutCheck(); + } + function nextTokenJSDoc() { + return currentToken = scanner.scanJsDocToken(); + } + function reScanGreaterToken() { + return currentToken = scanner.reScanGreaterToken(); + } + function reScanSlashToken() { + return currentToken = scanner.reScanSlashToken(); + } + function reScanTemplateToken(isTaggedTemplate) { + return currentToken = scanner.reScanTemplateToken(isTaggedTemplate); + } + function reScanTemplateHeadOrNoSubstitutionTemplate() { + return currentToken = scanner.reScanTemplateHeadOrNoSubstitutionTemplate(); + } + function reScanLessThanToken() { + return currentToken = scanner.reScanLessThanToken(); + } + function scanJsxIdentifier() { + return currentToken = scanner.scanJsxIdentifier(); + } + function scanJsxText() { + return currentToken = scanner.scanJsxToken(); + } + function scanJsxAttributeValue() { + return currentToken = scanner.scanJsxAttributeValue(); + } + function speculationHelper(callback, isLookAhead) { + // Keep track of the state we'll need to rollback to if lookahead fails (or if the + // caller asked us to always reset our state). + var saveToken = currentToken; + var saveParseDiagnosticsLength = parseDiagnostics.length; + var saveParseErrorBeforeNextFinishedNode = parseErrorBeforeNextFinishedNode; + // Note: it is not actually necessary to save/restore the context flags here. That's + // because the saving/restoring of these flags happens naturally through the recursive + // descent nature of our parser. However, we still store this here just so we can + // assert that invariant holds. + var saveContextFlags = contextFlags; + // If we're only looking ahead, then tell the scanner to only lookahead as well. + // Otherwise, if we're actually speculatively parsing, then tell the scanner to do the + // same. + var result = isLookAhead + ? scanner.lookAhead(callback) + : scanner.tryScan(callback); + ts.Debug.assert(saveContextFlags === contextFlags); + // If our callback returned something 'falsy' or we're just looking ahead, + // then unconditionally restore us to where we were. + if (!result || isLookAhead) { + currentToken = saveToken; + parseDiagnostics.length = saveParseDiagnosticsLength; + parseErrorBeforeNextFinishedNode = saveParseErrorBeforeNextFinishedNode; + } + return result; + } + /** Invokes the provided callback then unconditionally restores the parser to the state it + * was in immediately prior to invoking the callback. The result of invoking the callback + * is returned from this function. + */ + function lookAhead(callback) { + return speculationHelper(callback, /*isLookAhead*/ true); + } + /** Invokes the provided callback. If the callback returns something falsy, then it restores + * the parser to the state it was in immediately prior to invoking the callback. If the + * callback returns something truthy, then the parser state is not rolled back. The result + * of invoking the callback is returned from this function. + */ + function tryParse(callback) { + return speculationHelper(callback, /*isLookAhead*/ false); + } + // Ignore strict mode flag because we will report an error in type checker instead. + function isIdentifier() { + if (token() === 75 /* Identifier */) { + return true; + } + // If we have a 'yield' keyword, and we're in the [yield] context, then 'yield' is + // considered a keyword and is not an identifier. + if (token() === 121 /* YieldKeyword */ && inYieldContext()) { + return false; + } + // If we have a 'await' keyword, and we're in the [Await] context, then 'await' is + // considered a keyword and is not an identifier. + if (token() === 127 /* AwaitKeyword */ && inAwaitContext()) { + return false; + } + return token() > 112 /* LastReservedWord */; + } + function parseExpected(kind, diagnosticMessage, shouldAdvance) { + if (shouldAdvance === void 0) { shouldAdvance = true; } + if (token() === kind) { + if (shouldAdvance) { + nextToken(); + } + return true; + } + // Report specific message if provided with one. Otherwise, report generic fallback message. + if (diagnosticMessage) { + parseErrorAtCurrentToken(diagnosticMessage); + } + else { + parseErrorAtCurrentToken(ts.Diagnostics._0_expected, ts.tokenToString(kind)); + } + return false; + } + function parseExpectedJSDoc(kind) { + if (token() === kind) { + nextTokenJSDoc(); + return true; + } + parseErrorAtCurrentToken(ts.Diagnostics._0_expected, ts.tokenToString(kind)); + return false; + } + function parseOptional(t) { + if (token() === t) { + nextToken(); + return true; + } + return false; + } + function parseOptionalToken(t) { + if (token() === t) { + return parseTokenNode(); + } + return undefined; + } + function parseOptionalTokenJSDoc(t) { + if (token() === t) { + return parseTokenNodeJSDoc(); + } + return undefined; + } + function parseExpectedToken(t, diagnosticMessage, arg0) { + return parseOptionalToken(t) || + createMissingNode(t, /*reportAtCurrentPosition*/ false, diagnosticMessage || ts.Diagnostics._0_expected, arg0 || ts.tokenToString(t)); + } + function parseExpectedTokenJSDoc(t) { + return parseOptionalTokenJSDoc(t) || + createMissingNode(t, /*reportAtCurrentPosition*/ false, ts.Diagnostics._0_expected, ts.tokenToString(t)); + } + function parseTokenNode() { + var node = createNode(token()); + nextToken(); + return finishNode(node); + } + function parseTokenNodeJSDoc() { + var node = createNode(token()); + nextTokenJSDoc(); + return finishNode(node); + } + function canParseSemicolon() { + // If there's a real semicolon, then we can always parse it out. + if (token() === 26 /* SemicolonToken */) { + return true; + } + // We can parse out an optional semicolon in ASI cases in the following cases. + return token() === 19 /* CloseBraceToken */ || token() === 1 /* EndOfFileToken */ || scanner.hasPrecedingLineBreak(); + } + function parseSemicolon() { + if (canParseSemicolon()) { + if (token() === 26 /* SemicolonToken */) { + // consume the semicolon if it was explicitly provided. + nextToken(); + } + return true; + } + else { + return parseExpected(26 /* SemicolonToken */); + } + } + function createNode(kind, pos) { + nodeCount++; + var p = pos >= 0 ? pos : scanner.getStartPos(); + return ts.isNodeKind(kind) || kind === 0 /* Unknown */ ? new NodeConstructor(kind, p, p) : + kind === 75 /* Identifier */ ? new IdentifierConstructor(kind, p, p) : + kind === 76 /* PrivateIdentifier */ ? new PrivateIdentifierConstructor(kind, p, p) : + new TokenConstructor(kind, p, p); + } + function createNodeWithJSDoc(kind, pos) { + var node = createNode(kind, pos); + if (scanner.getTokenFlags() & 2 /* PrecedingJSDocComment */ && (kind !== 226 /* ExpressionStatement */ || token() !== 20 /* OpenParenToken */)) { + addJSDocComment(node); + } + return node; + } + function createNodeArray(elements, pos, end) { + // Since the element list of a node array is typically created by starting with an empty array and + // repeatedly calling push(), the list may not have the optimal memory layout. We invoke slice() for + // small arrays (1 to 4 elements) to give the VM a chance to allocate an optimal representation. + var length = elements.length; + var array = (length >= 1 && length <= 4 ? elements.slice() : elements); + array.pos = pos; + array.end = end === undefined ? scanner.getStartPos() : end; + return array; + } + function finishNode(node, end) { + node.end = end === undefined ? scanner.getStartPos() : end; + if (contextFlags) { + node.flags |= contextFlags; + } + // Keep track on the node if we encountered an error while parsing it. If we did, then + // we cannot reuse the node incrementally. Once we've marked this node, clear out the + // flag so that we don't mark any subsequent nodes. + if (parseErrorBeforeNextFinishedNode) { + parseErrorBeforeNextFinishedNode = false; + node.flags |= 65536 /* ThisNodeHasError */; + } + return node; + } + function createMissingNode(kind, reportAtCurrentPosition, diagnosticMessage, arg0) { + if (reportAtCurrentPosition) { + parseErrorAtPosition(scanner.getStartPos(), 0, diagnosticMessage, arg0); + } + else if (diagnosticMessage) { + parseErrorAtCurrentToken(diagnosticMessage, arg0); + } + var result = createNode(kind); + if (kind === 75 /* Identifier */) { + result.escapedText = ""; + } + else if (ts.isLiteralKind(kind) || ts.isTemplateLiteralKind(kind)) { + result.text = ""; + } + return finishNode(result); + } + function internIdentifier(text) { + var identifier = identifiers.get(text); + if (identifier === undefined) { + identifiers.set(text, identifier = text); + } + return identifier; + } + // An identifier that starts with two underscores has an extra underscore character prepended to it to avoid issues + // with magic property names like '__proto__'. The 'identifiers' object is used to share a single string instance for + // each identifier in order to reduce memory consumption. + function createIdentifier(isIdentifier, diagnosticMessage, privateIdentifierDiagnosticMessage) { + identifierCount++; + if (isIdentifier) { + var node = createNode(75 /* Identifier */); + // Store original token kind if it is not just an Identifier so we can report appropriate error later in type checker + if (token() !== 75 /* Identifier */) { + node.originalKeywordKind = token(); + } + node.escapedText = ts.escapeLeadingUnderscores(internIdentifier(scanner.getTokenValue())); + nextTokenWithoutCheck(); + return finishNode(node); + } + if (token() === 76 /* PrivateIdentifier */) { + parseErrorAtCurrentToken(privateIdentifierDiagnosticMessage || ts.Diagnostics.Private_identifiers_are_not_allowed_outside_class_bodies); + return createIdentifier(/*isIdentifier*/ true); + } + // Only for end of file because the error gets reported incorrectly on embedded script tags. + var reportAtCurrentPosition = token() === 1 /* EndOfFileToken */; + var isReservedWord = scanner.isReservedWord(); + var msgArg = scanner.getTokenText(); + var defaultMessage = isReservedWord ? + ts.Diagnostics.Identifier_expected_0_is_a_reserved_word_that_cannot_be_used_here : + ts.Diagnostics.Identifier_expected; + return createMissingNode(75 /* Identifier */, reportAtCurrentPosition, diagnosticMessage || defaultMessage, msgArg); + } + function parseIdentifier(diagnosticMessage, privateIdentifierDiagnosticMessage) { + return createIdentifier(isIdentifier(), diagnosticMessage, privateIdentifierDiagnosticMessage); + } + function parseIdentifierName(diagnosticMessage) { + return createIdentifier(ts.tokenIsIdentifierOrKeyword(token()), diagnosticMessage); + } + function isLiteralPropertyName() { + return ts.tokenIsIdentifierOrKeyword(token()) || + token() === 10 /* StringLiteral */ || + token() === 8 /* NumericLiteral */; + } + function parsePropertyNameWorker(allowComputedPropertyNames) { + if (token() === 10 /* StringLiteral */ || token() === 8 /* NumericLiteral */) { + var node = parseLiteralNode(); + node.text = internIdentifier(node.text); + return node; + } + if (allowComputedPropertyNames && token() === 22 /* OpenBracketToken */) { + return parseComputedPropertyName(); + } + if (token() === 76 /* PrivateIdentifier */) { + return parsePrivateIdentifier(); + } + return parseIdentifierName(); + } + function parsePropertyName() { + return parsePropertyNameWorker(/*allowComputedPropertyNames*/ true); + } + function parseComputedPropertyName() { + // PropertyName [Yield]: + // LiteralPropertyName + // ComputedPropertyName[?Yield] + var node = createNode(154 /* ComputedPropertyName */); + parseExpected(22 /* OpenBracketToken */); + // We parse any expression (including a comma expression). But the grammar + // says that only an assignment expression is allowed, so the grammar checker + // will error if it sees a comma expression. + node.expression = allowInAnd(parseExpression); + parseExpected(23 /* CloseBracketToken */); + return finishNode(node); + } + function internPrivateIdentifier(text) { + var privateIdentifier = privateIdentifiers.get(text); + if (privateIdentifier === undefined) { + privateIdentifiers.set(text, privateIdentifier = text); + } + return privateIdentifier; + } + function parsePrivateIdentifier() { + var node = createNode(76 /* PrivateIdentifier */); + node.escapedText = ts.escapeLeadingUnderscores(internPrivateIdentifier(scanner.getTokenText())); + nextToken(); + return finishNode(node); + } + function parseContextualModifier(t) { + return token() === t && tryParse(nextTokenCanFollowModifier); + } + function nextTokenIsOnSameLineAndCanFollowModifier() { + nextToken(); + if (scanner.hasPrecedingLineBreak()) { + return false; + } + return canFollowModifier(); + } + function nextTokenCanFollowModifier() { + switch (token()) { + case 81 /* ConstKeyword */: + // 'const' is only a modifier if followed by 'enum'. + return nextToken() === 88 /* EnumKeyword */; + case 89 /* ExportKeyword */: + nextToken(); + if (token() === 84 /* DefaultKeyword */) { + return lookAhead(nextTokenCanFollowDefaultKeyword); + } + if (token() === 145 /* TypeKeyword */) { + return lookAhead(nextTokenCanFollowExportModifier); + } + return canFollowExportModifier(); + case 84 /* DefaultKeyword */: + return nextTokenCanFollowDefaultKeyword(); + case 120 /* StaticKeyword */: + case 131 /* GetKeyword */: + case 142 /* SetKeyword */: + nextToken(); + return canFollowModifier(); + default: + return nextTokenIsOnSameLineAndCanFollowModifier(); + } + } + function canFollowExportModifier() { + return token() !== 41 /* AsteriskToken */ + && token() !== 123 /* AsKeyword */ + && token() !== 18 /* OpenBraceToken */ + && canFollowModifier(); + } + function nextTokenCanFollowExportModifier() { + nextToken(); + return canFollowExportModifier(); + } + function parseAnyContextualModifier() { + return ts.isModifierKind(token()) && tryParse(nextTokenCanFollowModifier); + } + function canFollowModifier() { + return token() === 22 /* OpenBracketToken */ + || token() === 18 /* OpenBraceToken */ + || token() === 41 /* AsteriskToken */ + || token() === 25 /* DotDotDotToken */ + || isLiteralPropertyName(); + } + function nextTokenCanFollowDefaultKeyword() { + nextToken(); + return token() === 80 /* ClassKeyword */ || token() === 94 /* FunctionKeyword */ || + token() === 114 /* InterfaceKeyword */ || + (token() === 122 /* AbstractKeyword */ && lookAhead(nextTokenIsClassKeywordOnSameLine)) || + (token() === 126 /* AsyncKeyword */ && lookAhead(nextTokenIsFunctionKeywordOnSameLine)); + } + // True if positioned at the start of a list element + function isListElement(parsingContext, inErrorRecovery) { + var node = currentNode(parsingContext); + if (node) { + return true; + } + switch (parsingContext) { + case 0 /* SourceElements */: + case 1 /* BlockStatements */: + case 3 /* SwitchClauseStatements */: + // If we're in error recovery, then we don't want to treat ';' as an empty statement. + // The problem is that ';' can show up in far too many contexts, and if we see one + // and assume it's a statement, then we may bail out inappropriately from whatever + // we're parsing. For example, if we have a semicolon in the middle of a class, then + // we really don't want to assume the class is over and we're on a statement in the + // outer module. We just want to consume and move on. + return !(token() === 26 /* SemicolonToken */ && inErrorRecovery) && isStartOfStatement(); + case 2 /* SwitchClauses */: + return token() === 78 /* CaseKeyword */ || token() === 84 /* DefaultKeyword */; + case 4 /* TypeMembers */: + return lookAhead(isTypeMemberStart); + case 5 /* ClassMembers */: + // We allow semicolons as class elements (as specified by ES6) as long as we're + // not in error recovery. If we're in error recovery, we don't want an errant + // semicolon to be treated as a class member (since they're almost always used + // for statements. + return lookAhead(isClassMemberStart) || (token() === 26 /* SemicolonToken */ && !inErrorRecovery); + case 6 /* EnumMembers */: + // Include open bracket computed properties. This technically also lets in indexers, + // which would be a candidate for improved error reporting. + return token() === 22 /* OpenBracketToken */ || isLiteralPropertyName(); + case 12 /* ObjectLiteralMembers */: + switch (token()) { + case 22 /* OpenBracketToken */: + case 41 /* AsteriskToken */: + case 25 /* DotDotDotToken */: + case 24 /* DotToken */: // Not an object literal member, but don't want to close the object (see `tests/cases/fourslash/completionsDotInObjectLiteral.ts`) + return true; + default: + return isLiteralPropertyName(); + } + case 18 /* RestProperties */: + return isLiteralPropertyName(); + case 9 /* ObjectBindingElements */: + return token() === 22 /* OpenBracketToken */ || token() === 25 /* DotDotDotToken */ || isLiteralPropertyName(); + case 7 /* HeritageClauseElement */: + // If we see `{ ... }` then only consume it as an expression if it is followed by `,` or `{` + // That way we won't consume the body of a class in its heritage clause. + if (token() === 18 /* OpenBraceToken */) { + return lookAhead(isValidHeritageClauseObjectLiteral); + } + if (!inErrorRecovery) { + return isStartOfLeftHandSideExpression() && !isHeritageClauseExtendsOrImplementsKeyword(); + } + else { + // If we're in error recovery we tighten up what we're willing to match. + // That way we don't treat something like "this" as a valid heritage clause + // element during recovery. + return isIdentifier() && !isHeritageClauseExtendsOrImplementsKeyword(); + } + case 8 /* VariableDeclarations */: + return isIdentifierOrPrivateIdentifierOrPattern(); + case 10 /* ArrayBindingElements */: + return token() === 27 /* CommaToken */ || token() === 25 /* DotDotDotToken */ || isIdentifierOrPrivateIdentifierOrPattern(); + case 19 /* TypeParameters */: + return isIdentifier(); + case 15 /* ArrayLiteralMembers */: + switch (token()) { + case 27 /* CommaToken */: + case 24 /* DotToken */: // Not an array literal member, but don't want to close the array (see `tests/cases/fourslash/completionsDotInArrayLiteralInObjectLiteral.ts`) + return true; + } + // falls through + case 11 /* ArgumentExpressions */: + return token() === 25 /* DotDotDotToken */ || isStartOfExpression(); + case 16 /* Parameters */: + return isStartOfParameter(/*isJSDocParameter*/ false); + case 17 /* JSDocParameters */: + return isStartOfParameter(/*isJSDocParameter*/ true); + case 20 /* TypeArguments */: + case 21 /* TupleElementTypes */: + return token() === 27 /* CommaToken */ || isStartOfType(); + case 22 /* HeritageClauses */: + return isHeritageClause(); + case 23 /* ImportOrExportSpecifiers */: + return ts.tokenIsIdentifierOrKeyword(token()); + case 13 /* JsxAttributes */: + return ts.tokenIsIdentifierOrKeyword(token()) || token() === 18 /* OpenBraceToken */; + case 14 /* JsxChildren */: + return true; + } + return ts.Debug.fail("Non-exhaustive case in 'isListElement'."); + } + function isValidHeritageClauseObjectLiteral() { + ts.Debug.assert(token() === 18 /* OpenBraceToken */); + if (nextToken() === 19 /* CloseBraceToken */) { + // if we see "extends {}" then only treat the {} as what we're extending (and not + // the class body) if we have: + // + // extends {} { + // extends {}, + // extends {} extends + // extends {} implements + var next = nextToken(); + return next === 27 /* CommaToken */ || next === 18 /* OpenBraceToken */ || next === 90 /* ExtendsKeyword */ || next === 113 /* ImplementsKeyword */; + } + return true; + } + function nextTokenIsIdentifier() { + nextToken(); + return isIdentifier(); + } + function nextTokenIsIdentifierOrKeyword() { + nextToken(); + return ts.tokenIsIdentifierOrKeyword(token()); + } + function nextTokenIsIdentifierOrKeywordOrGreaterThan() { + nextToken(); + return ts.tokenIsIdentifierOrKeywordOrGreaterThan(token()); + } + function isHeritageClauseExtendsOrImplementsKeyword() { + if (token() === 113 /* ImplementsKeyword */ || + token() === 90 /* ExtendsKeyword */) { + return lookAhead(nextTokenIsStartOfExpression); + } + return false; + } + function nextTokenIsStartOfExpression() { + nextToken(); + return isStartOfExpression(); + } + function nextTokenIsStartOfType() { + nextToken(); + return isStartOfType(); + } + // True if positioned at a list terminator + function isListTerminator(kind) { + if (token() === 1 /* EndOfFileToken */) { + // Being at the end of the file ends all lists. + return true; + } + switch (kind) { + case 1 /* BlockStatements */: + case 2 /* SwitchClauses */: + case 4 /* TypeMembers */: + case 5 /* ClassMembers */: + case 6 /* EnumMembers */: + case 12 /* ObjectLiteralMembers */: + case 9 /* ObjectBindingElements */: + case 23 /* ImportOrExportSpecifiers */: + return token() === 19 /* CloseBraceToken */; + case 3 /* SwitchClauseStatements */: + return token() === 19 /* CloseBraceToken */ || token() === 78 /* CaseKeyword */ || token() === 84 /* DefaultKeyword */; + case 7 /* HeritageClauseElement */: + return token() === 18 /* OpenBraceToken */ || token() === 90 /* ExtendsKeyword */ || token() === 113 /* ImplementsKeyword */; + case 8 /* VariableDeclarations */: + return isVariableDeclaratorListTerminator(); + case 19 /* TypeParameters */: + // Tokens other than '>' are here for better error recovery + return token() === 31 /* GreaterThanToken */ || token() === 20 /* OpenParenToken */ || token() === 18 /* OpenBraceToken */ || token() === 90 /* ExtendsKeyword */ || token() === 113 /* ImplementsKeyword */; + case 11 /* ArgumentExpressions */: + // Tokens other than ')' are here for better error recovery + return token() === 21 /* CloseParenToken */ || token() === 26 /* SemicolonToken */; + case 15 /* ArrayLiteralMembers */: + case 21 /* TupleElementTypes */: + case 10 /* ArrayBindingElements */: + return token() === 23 /* CloseBracketToken */; + case 17 /* JSDocParameters */: + case 16 /* Parameters */: + case 18 /* RestProperties */: + // Tokens other than ')' and ']' (the latter for index signatures) are here for better error recovery + return token() === 21 /* CloseParenToken */ || token() === 23 /* CloseBracketToken */ /*|| token === SyntaxKind.OpenBraceToken*/; + case 20 /* TypeArguments */: + // All other tokens should cause the type-argument to terminate except comma token + return token() !== 27 /* CommaToken */; + case 22 /* HeritageClauses */: + return token() === 18 /* OpenBraceToken */ || token() === 19 /* CloseBraceToken */; + case 13 /* JsxAttributes */: + return token() === 31 /* GreaterThanToken */ || token() === 43 /* SlashToken */; + case 14 /* JsxChildren */: + return token() === 29 /* LessThanToken */ && lookAhead(nextTokenIsSlash); + default: + return false; + } + } + function isVariableDeclaratorListTerminator() { + // If we can consume a semicolon (either explicitly, or with ASI), then consider us done + // with parsing the list of variable declarators. + if (canParseSemicolon()) { + return true; + } + // in the case where we're parsing the variable declarator of a 'for-in' statement, we + // are done if we see an 'in' keyword in front of us. Same with for-of + if (isInOrOfKeyword(token())) { + return true; + } + // ERROR RECOVERY TWEAK: + // For better error recovery, if we see an '=>' then we just stop immediately. We've got an + // arrow function here and it's going to be very unlikely that we'll resynchronize and get + // another variable declaration. + if (token() === 38 /* EqualsGreaterThanToken */) { + return true; + } + // Keep trying to parse out variable declarators. + return false; + } + // True if positioned at element or terminator of the current list or any enclosing list + function isInSomeParsingContext() { + for (var kind = 0; kind < 24 /* Count */; kind++) { + if (parsingContext & (1 << kind)) { + if (isListElement(kind, /*inErrorRecovery*/ true) || isListTerminator(kind)) { + return true; + } + } + } + return false; + } + // Parses a list of elements + function parseList(kind, parseElement) { + var saveParsingContext = parsingContext; + parsingContext |= 1 << kind; + var list = []; + var listPos = getNodePos(); + while (!isListTerminator(kind)) { + if (isListElement(kind, /*inErrorRecovery*/ false)) { + var element = parseListElement(kind, parseElement); + list.push(element); + continue; + } + if (abortParsingListOrMoveToNextToken(kind)) { + break; + } + } + parsingContext = saveParsingContext; + return createNodeArray(list, listPos); + } + function parseListElement(parsingContext, parseElement) { + var node = currentNode(parsingContext); + if (node) { + return consumeNode(node); + } + return parseElement(); + } + function currentNode(parsingContext) { + // If we don't have a cursor or the parsing context isn't reusable, there's nothing to reuse. + // + // If there is an outstanding parse error that we've encountered, but not attached to + // some node, then we cannot get a node from the old source tree. This is because we + // want to mark the next node we encounter as being unusable. + // + // Note: This may be too conservative. Perhaps we could reuse the node and set the bit + // on it (or its leftmost child) as having the error. For now though, being conservative + // is nice and likely won't ever affect perf. + if (!syntaxCursor || !isReusableParsingContext(parsingContext) || parseErrorBeforeNextFinishedNode) { + return undefined; + } + var node = syntaxCursor.currentNode(scanner.getStartPos()); + // Can't reuse a missing node. + // Can't reuse a node that intersected the change range. + // Can't reuse a node that contains a parse error. This is necessary so that we + // produce the same set of errors again. + if (ts.nodeIsMissing(node) || node.intersectsChange || ts.containsParseError(node)) { + return undefined; + } + // We can only reuse a node if it was parsed under the same strict mode that we're + // currently in. i.e. if we originally parsed a node in non-strict mode, but then + // the user added 'using strict' at the top of the file, then we can't use that node + // again as the presence of strict mode may cause us to parse the tokens in the file + // differently. + // + // Note: we *can* reuse tokens when the strict mode changes. That's because tokens + // are unaffected by strict mode. It's just the parser will decide what to do with it + // differently depending on what mode it is in. + // + // This also applies to all our other context flags as well. + var nodeContextFlags = node.flags & 25358336 /* ContextFlags */; + if (nodeContextFlags !== contextFlags) { + return undefined; + } + // Ok, we have a node that looks like it could be reused. Now verify that it is valid + // in the current list parsing context that we're currently at. + if (!canReuseNode(node, parsingContext)) { + return undefined; + } + if (node.jsDocCache) { + // jsDocCache may include tags from parent nodes, which might have been modified. + node.jsDocCache = undefined; + } + return node; + } + function consumeNode(node) { + // Move the scanner so it is after the node we just consumed. + scanner.setTextPos(node.end); + nextToken(); + return node; + } + function isReusableParsingContext(parsingContext) { + switch (parsingContext) { + case 5 /* ClassMembers */: + case 2 /* SwitchClauses */: + case 0 /* SourceElements */: + case 1 /* BlockStatements */: + case 3 /* SwitchClauseStatements */: + case 6 /* EnumMembers */: + case 4 /* TypeMembers */: + case 8 /* VariableDeclarations */: + case 17 /* JSDocParameters */: + case 16 /* Parameters */: + return true; + } + return false; + } + function canReuseNode(node, parsingContext) { + switch (parsingContext) { + case 5 /* ClassMembers */: + return isReusableClassMember(node); + case 2 /* SwitchClauses */: + return isReusableSwitchClause(node); + case 0 /* SourceElements */: + case 1 /* BlockStatements */: + case 3 /* SwitchClauseStatements */: + return isReusableStatement(node); + case 6 /* EnumMembers */: + return isReusableEnumMember(node); + case 4 /* TypeMembers */: + return isReusableTypeMember(node); + case 8 /* VariableDeclarations */: + return isReusableVariableDeclaration(node); + case 17 /* JSDocParameters */: + case 16 /* Parameters */: + return isReusableParameter(node); + // Any other lists we do not care about reusing nodes in. But feel free to add if + // you can do so safely. Danger areas involve nodes that may involve speculative + // parsing. If speculative parsing is involved with the node, then the range the + // parser reached while looking ahead might be in the edited range (see the example + // in canReuseVariableDeclaratorNode for a good case of this). + // case ParsingContext.HeritageClauses: + // This would probably be safe to reuse. There is no speculative parsing with + // heritage clauses. + // case ParsingContext.TypeParameters: + // This would probably be safe to reuse. There is no speculative parsing with + // type parameters. Note that that's because type *parameters* only occur in + // unambiguous *type* contexts. While type *arguments* occur in very ambiguous + // *expression* contexts. + // case ParsingContext.TupleElementTypes: + // This would probably be safe to reuse. There is no speculative parsing with + // tuple types. + // Technically, type argument list types are probably safe to reuse. While + // speculative parsing is involved with them (since type argument lists are only + // produced from speculative parsing a < as a type argument list), we only have + // the types because speculative parsing succeeded. Thus, the lookahead never + // went past the end of the list and rewound. + // case ParsingContext.TypeArguments: + // Note: these are almost certainly not safe to ever reuse. Expressions commonly + // need a large amount of lookahead, and we should not reuse them as they may + // have actually intersected the edit. + // case ParsingContext.ArgumentExpressions: + // This is not safe to reuse for the same reason as the 'AssignmentExpression' + // cases. i.e. a property assignment may end with an expression, and thus might + // have lookahead far beyond it's old node. + // case ParsingContext.ObjectLiteralMembers: + // This is probably not safe to reuse. There can be speculative parsing with + // type names in a heritage clause. There can be generic names in the type + // name list, and there can be left hand side expressions (which can have type + // arguments.) + // case ParsingContext.HeritageClauseElement: + // Perhaps safe to reuse, but it's unlikely we'd see more than a dozen attributes + // on any given element. Same for children. + // case ParsingContext.JsxAttributes: + // case ParsingContext.JsxChildren: + } + return false; + } + function isReusableClassMember(node) { + if (node) { + switch (node.kind) { + case 162 /* Constructor */: + case 167 /* IndexSignature */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + case 159 /* PropertyDeclaration */: + case 222 /* SemicolonClassElement */: + return true; + case 161 /* MethodDeclaration */: + // Method declarations are not necessarily reusable. An object-literal + // may have a method calls "constructor(...)" and we must reparse that + // into an actual .ConstructorDeclaration. + var methodDeclaration = node; + var nameIsConstructor = methodDeclaration.name.kind === 75 /* Identifier */ && + methodDeclaration.name.originalKeywordKind === 129 /* ConstructorKeyword */; + return !nameIsConstructor; + } + } + return false; + } + function isReusableSwitchClause(node) { + if (node) { + switch (node.kind) { + case 277 /* CaseClause */: + case 278 /* DefaultClause */: + return true; + } + } + return false; + } + function isReusableStatement(node) { + if (node) { + switch (node.kind) { + case 244 /* FunctionDeclaration */: + case 225 /* VariableStatement */: + case 223 /* Block */: + case 227 /* IfStatement */: + case 226 /* ExpressionStatement */: + case 239 /* ThrowStatement */: + case 235 /* ReturnStatement */: + case 237 /* SwitchStatement */: + case 234 /* BreakStatement */: + case 233 /* ContinueStatement */: + case 231 /* ForInStatement */: + case 232 /* ForOfStatement */: + case 230 /* ForStatement */: + case 229 /* WhileStatement */: + case 236 /* WithStatement */: + case 224 /* EmptyStatement */: + case 240 /* TryStatement */: + case 238 /* LabeledStatement */: + case 228 /* DoStatement */: + case 241 /* DebuggerStatement */: + case 254 /* ImportDeclaration */: + case 253 /* ImportEqualsDeclaration */: + case 260 /* ExportDeclaration */: + case 259 /* ExportAssignment */: + case 249 /* ModuleDeclaration */: + case 245 /* ClassDeclaration */: + case 246 /* InterfaceDeclaration */: + case 248 /* EnumDeclaration */: + case 247 /* TypeAliasDeclaration */: + return true; + } + } + return false; + } + function isReusableEnumMember(node) { + return node.kind === 284 /* EnumMember */; + } + function isReusableTypeMember(node) { + if (node) { + switch (node.kind) { + case 166 /* ConstructSignature */: + case 160 /* MethodSignature */: + case 167 /* IndexSignature */: + case 158 /* PropertySignature */: + case 165 /* CallSignature */: + return true; + } + } + return false; + } + function isReusableVariableDeclaration(node) { + if (node.kind !== 242 /* VariableDeclaration */) { + return false; + } + // Very subtle incremental parsing bug. Consider the following code: + // + // let v = new List < A, B + // + // This is actually legal code. It's a list of variable declarators "v = new List() + // + // then we have a problem. "v = new List= 0) { + // Always preserve a trailing comma by marking it on the NodeArray + result.hasTrailingComma = true; + } + return result; + } + function getExpectedCommaDiagnostic(kind) { + return kind === 6 /* EnumMembers */ ? ts.Diagnostics.An_enum_member_name_must_be_followed_by_a_or : undefined; + } + function createMissingList() { + var list = createNodeArray([], getNodePos()); + list.isMissingList = true; + return list; + } + function isMissingList(arr) { + return !!arr.isMissingList; + } + function parseBracketedList(kind, parseElement, open, close) { + if (parseExpected(open)) { + var result = parseDelimitedList(kind, parseElement); + parseExpected(close); + return result; + } + return createMissingList(); + } + function parseEntityName(allowReservedWords, diagnosticMessage) { + var entity = allowReservedWords ? parseIdentifierName(diagnosticMessage) : parseIdentifier(diagnosticMessage); + var dotPos = scanner.getStartPos(); + while (parseOptional(24 /* DotToken */)) { + if (token() === 29 /* LessThanToken */) { + // the entity is part of a JSDoc-style generic, so record the trailing dot for later error reporting + entity.jsdocDotPos = dotPos; + break; + } + dotPos = scanner.getStartPos(); + entity = createQualifiedName(entity, parseRightSideOfDot(allowReservedWords, /* allowPrivateIdentifiers */ false)); + } + return entity; + } + function createQualifiedName(entity, name) { + var node = createNode(153 /* QualifiedName */, entity.pos); + node.left = entity; + node.right = name; + return finishNode(node); + } + function parseRightSideOfDot(allowIdentifierNames, allowPrivateIdentifiers) { + // Technically a keyword is valid here as all identifiers and keywords are identifier names. + // However, often we'll encounter this in error situations when the identifier or keyword + // is actually starting another valid construct. + // + // So, we check for the following specific case: + // + // name. + // identifierOrKeyword identifierNameOrKeyword + // + // Note: the newlines are important here. For example, if that above code + // were rewritten into: + // + // name.identifierOrKeyword + // identifierNameOrKeyword + // + // Then we would consider it valid. That's because ASI would take effect and + // the code would be implicitly: "name.identifierOrKeyword; identifierNameOrKeyword". + // In the first case though, ASI will not take effect because there is not a + // line terminator after the identifier or keyword. + if (scanner.hasPrecedingLineBreak() && ts.tokenIsIdentifierOrKeyword(token())) { + var matchesPattern = lookAhead(nextTokenIsIdentifierOrKeywordOnSameLine); + if (matchesPattern) { + // Report that we need an identifier. However, report it right after the dot, + // and not on the next token. This is because the next token might actually + // be an identifier and the error would be quite confusing. + return createMissingNode(75 /* Identifier */, /*reportAtCurrentPosition*/ true, ts.Diagnostics.Identifier_expected); + } + } + if (token() === 76 /* PrivateIdentifier */) { + var node = parsePrivateIdentifier(); + return allowPrivateIdentifiers ? node : createMissingNode(75 /* Identifier */, /*reportAtCurrentPosition*/ true, ts.Diagnostics.Identifier_expected); + } + return allowIdentifierNames ? parseIdentifierName() : parseIdentifier(); + } + function parseTemplateExpression(isTaggedTemplate) { + var template = createNode(211 /* TemplateExpression */); + template.head = parseTemplateHead(isTaggedTemplate); + ts.Debug.assert(template.head.kind === 15 /* TemplateHead */, "Template head has wrong token kind"); + var list = []; + var listPos = getNodePos(); + do { + list.push(parseTemplateSpan(isTaggedTemplate)); + } while (ts.last(list).literal.kind === 16 /* TemplateMiddle */); + template.templateSpans = createNodeArray(list, listPos); + return finishNode(template); + } + function parseTemplateSpan(isTaggedTemplate) { + var span = createNode(221 /* TemplateSpan */); + span.expression = allowInAnd(parseExpression); + var literal; + if (token() === 19 /* CloseBraceToken */) { + reScanTemplateToken(isTaggedTemplate); + literal = parseTemplateMiddleOrTemplateTail(); + } + else { + literal = parseExpectedToken(17 /* TemplateTail */, ts.Diagnostics._0_expected, ts.tokenToString(19 /* CloseBraceToken */)); + } + span.literal = literal; + return finishNode(span); + } + function parseLiteralNode() { + return parseLiteralLikeNode(token()); + } + function parseTemplateHead(isTaggedTemplate) { + if (isTaggedTemplate) { + reScanTemplateHeadOrNoSubstitutionTemplate(); + } + var fragment = parseLiteralLikeNode(token()); + ts.Debug.assert(fragment.kind === 15 /* TemplateHead */, "Template head has wrong token kind"); + return fragment; + } + function parseTemplateMiddleOrTemplateTail() { + var fragment = parseLiteralLikeNode(token()); + ts.Debug.assert(fragment.kind === 16 /* TemplateMiddle */ || fragment.kind === 17 /* TemplateTail */, "Template fragment has wrong token kind"); + return fragment; + } + function parseLiteralLikeNode(kind) { + var node = createNode(kind); + node.text = scanner.getTokenValue(); + switch (kind) { + case 14 /* NoSubstitutionTemplateLiteral */: + case 15 /* TemplateHead */: + case 16 /* TemplateMiddle */: + case 17 /* TemplateTail */: + var isLast = kind === 14 /* NoSubstitutionTemplateLiteral */ || kind === 17 /* TemplateTail */; + var tokenText = scanner.getTokenText(); + node.rawText = tokenText.substring(1, tokenText.length - (scanner.isUnterminated() ? 0 : isLast ? 1 : 2)); + break; + } + if (scanner.hasExtendedUnicodeEscape()) { + node.hasExtendedUnicodeEscape = true; + } + if (scanner.isUnterminated()) { + node.isUnterminated = true; + } + // Octal literals are not allowed in strict mode or ES5 + // Note that theoretically the following condition would hold true literals like 009, + // which is not octal.But because of how the scanner separates the tokens, we would + // never get a token like this. Instead, we would get 00 and 9 as two separate tokens. + // We also do not need to check for negatives because any prefix operator would be part of a + // parent unary expression. + if (node.kind === 8 /* NumericLiteral */) { + node.numericLiteralFlags = scanner.getTokenFlags() & 1008 /* NumericLiteralFlags */; + } + if (ts.isTemplateLiteralKind(node.kind)) { + node.templateFlags = scanner.getTokenFlags() & 2048 /* ContainsInvalidEscape */; + } + nextToken(); + finishNode(node); + return node; + } + // TYPES + function parseTypeReference() { + var node = createNode(169 /* TypeReference */); + node.typeName = parseEntityName(/*allowReservedWords*/ true, ts.Diagnostics.Type_expected); + if (!scanner.hasPrecedingLineBreak() && reScanLessThanToken() === 29 /* LessThanToken */) { + node.typeArguments = parseBracketedList(20 /* TypeArguments */, parseType, 29 /* LessThanToken */, 31 /* GreaterThanToken */); + } + return finishNode(node); + } + // If true, we should abort parsing an error function. + function typeHasArrowFunctionBlockingParseError(node) { + switch (node.kind) { + case 169 /* TypeReference */: + return ts.nodeIsMissing(node.typeName); + case 170 /* FunctionType */: + case 171 /* ConstructorType */: { + var _a = node, parameters = _a.parameters, type = _a.type; + return isMissingList(parameters) || typeHasArrowFunctionBlockingParseError(type); + } + case 182 /* ParenthesizedType */: + return typeHasArrowFunctionBlockingParseError(node.type); + default: + return false; + } + } + function parseThisTypePredicate(lhs) { + nextToken(); + var node = createNode(168 /* TypePredicate */, lhs.pos); + node.parameterName = lhs; + node.type = parseType(); + return finishNode(node); + } + function parseThisTypeNode() { + var node = createNode(183 /* ThisType */); + nextToken(); + return finishNode(node); + } + function parseJSDocAllType(postFixEquals) { + var result = createNode(295 /* JSDocAllType */); + if (postFixEquals) { + return createPostfixType(299 /* JSDocOptionalType */, result); + } + else { + nextToken(); + } + return finishNode(result); + } + function parseJSDocNonNullableType() { + var result = createNode(298 /* JSDocNonNullableType */); + nextToken(); + result.type = parseNonArrayType(); + return finishNode(result); + } + function parseJSDocUnknownOrNullableType() { + var pos = scanner.getStartPos(); + // skip the ? + nextToken(); + // Need to lookahead to decide if this is a nullable or unknown type. + // Here are cases where we'll pick the unknown type: + // + // Foo(?, + // { a: ? } + // Foo(?) + // Foo + // Foo(?= + // (?| + if (token() === 27 /* CommaToken */ || + token() === 19 /* CloseBraceToken */ || + token() === 21 /* CloseParenToken */ || + token() === 31 /* GreaterThanToken */ || + token() === 62 /* EqualsToken */ || + token() === 51 /* BarToken */) { + var result = createNode(296 /* JSDocUnknownType */, pos); + return finishNode(result); + } + else { + var result = createNode(297 /* JSDocNullableType */, pos); + result.type = parseType(); + return finishNode(result); + } + } + function parseJSDocFunctionType() { + if (lookAhead(nextTokenIsOpenParen)) { + var result = createNodeWithJSDoc(300 /* JSDocFunctionType */); + nextToken(); + fillSignature(58 /* ColonToken */, 4 /* Type */ | 32 /* JSDoc */, result); + return finishNode(result); + } + var node = createNode(169 /* TypeReference */); + node.typeName = parseIdentifierName(); + return finishNode(node); + } + function parseJSDocParameter() { + var parameter = createNode(156 /* Parameter */); + if (token() === 104 /* ThisKeyword */ || token() === 99 /* NewKeyword */) { + parameter.name = parseIdentifierName(); + parseExpected(58 /* ColonToken */); + } + parameter.type = parseJSDocType(); + return finishNode(parameter); + } + function parseJSDocType() { + scanner.setInJSDocType(true); + var moduleSpecifier = parseOptionalToken(135 /* ModuleKeyword */); + if (moduleSpecifier) { + var moduleTag = createNode(302 /* JSDocNamepathType */, moduleSpecifier.pos); + terminate: while (true) { + switch (token()) { + case 19 /* CloseBraceToken */: + case 1 /* EndOfFileToken */: + case 27 /* CommaToken */: + case 5 /* WhitespaceTrivia */: + break terminate; + default: + nextTokenJSDoc(); + } + } + scanner.setInJSDocType(false); + return finishNode(moduleTag); + } + var dotdotdot = parseOptionalToken(25 /* DotDotDotToken */); + var type = parseTypeOrTypePredicate(); + scanner.setInJSDocType(false); + if (dotdotdot) { + var variadic = createNode(301 /* JSDocVariadicType */, dotdotdot.pos); + variadic.type = type; + type = finishNode(variadic); + } + if (token() === 62 /* EqualsToken */) { + return createPostfixType(299 /* JSDocOptionalType */, type); + } + return type; + } + function parseTypeQuery() { + var node = createNode(172 /* TypeQuery */); + parseExpected(108 /* TypeOfKeyword */); + node.exprName = parseEntityName(/*allowReservedWords*/ true); + return finishNode(node); + } + function parseTypeParameter() { + var node = createNode(155 /* TypeParameter */); + node.name = parseIdentifier(); + if (parseOptional(90 /* ExtendsKeyword */)) { + // It's not uncommon for people to write improper constraints to a generic. If the + // user writes a constraint that is an expression and not an actual type, then parse + // it out as an expression (so we can recover well), but report that a type is needed + // instead. + if (isStartOfType() || !isStartOfExpression()) { + node.constraint = parseType(); + } + else { + // It was not a type, and it looked like an expression. Parse out an expression + // here so we recover well. Note: it is important that we call parseUnaryExpression + // and not parseExpression here. If the user has: + // + // + // + // We do *not* want to consume the `>` as we're consuming the expression for "". + node.expression = parseUnaryExpressionOrHigher(); + } + } + if (parseOptional(62 /* EqualsToken */)) { + node.default = parseType(); + } + return finishNode(node); + } + function parseTypeParameters() { + if (token() === 29 /* LessThanToken */) { + return parseBracketedList(19 /* TypeParameters */, parseTypeParameter, 29 /* LessThanToken */, 31 /* GreaterThanToken */); + } + } + function parseParameterType() { + if (parseOptional(58 /* ColonToken */)) { + return parseType(); + } + return undefined; + } + function isStartOfParameter(isJSDocParameter) { + return token() === 25 /* DotDotDotToken */ || + isIdentifierOrPrivateIdentifierOrPattern() || + ts.isModifierKind(token()) || + token() === 59 /* AtToken */ || + isStartOfType(/*inStartOfParameter*/ !isJSDocParameter); + } + function parseParameter() { + var node = createNodeWithJSDoc(156 /* Parameter */); + if (token() === 104 /* ThisKeyword */) { + node.name = createIdentifier(/*isIdentifier*/ true); + node.type = parseParameterType(); + return finishNode(node); + } + node.decorators = parseDecorators(); + node.modifiers = parseModifiers(); + node.dotDotDotToken = parseOptionalToken(25 /* DotDotDotToken */); + // FormalParameter [Yield,Await]: + // BindingElement[?Yield,?Await] + node.name = parseIdentifierOrPattern(ts.Diagnostics.Private_identifiers_cannot_be_used_as_parameters); + if (ts.getFullWidth(node.name) === 0 && !node.modifiers && ts.isModifierKind(token())) { + // in cases like + // 'use strict' + // function foo(static) + // isParameter('static') === true, because of isModifier('static') + // however 'static' is not a legal identifier in a strict mode. + // so result of this function will be ParameterDeclaration (flags = 0, name = missing, type = undefined, initializer = undefined) + // and current token will not change => parsing of the enclosing parameter list will last till the end of time (or OOM) + // to avoid this we'll advance cursor to the next token. + nextToken(); + } + node.questionToken = parseOptionalToken(57 /* QuestionToken */); + node.type = parseParameterType(); + node.initializer = parseInitializer(); + return finishNode(node); + } + /** + * Note: If returnToken is EqualsGreaterThanToken, `signature.type` will always be defined. + * @returns If return type parsing succeeds + */ + function fillSignature(returnToken, flags, signature) { + if (!(flags & 32 /* JSDoc */)) { + signature.typeParameters = parseTypeParameters(); + } + var parametersParsedSuccessfully = parseParameterList(signature, flags); + if (shouldParseReturnType(returnToken, !!(flags & 4 /* Type */))) { + signature.type = parseTypeOrTypePredicate(); + if (typeHasArrowFunctionBlockingParseError(signature.type)) + return false; + } + return parametersParsedSuccessfully; + } + function shouldParseReturnType(returnToken, isType) { + if (returnToken === 38 /* EqualsGreaterThanToken */) { + parseExpected(returnToken); + return true; + } + else if (parseOptional(58 /* ColonToken */)) { + return true; + } + else if (isType && token() === 38 /* EqualsGreaterThanToken */) { + // This is easy to get backward, especially in type contexts, so parse the type anyway + parseErrorAtCurrentToken(ts.Diagnostics._0_expected, ts.tokenToString(58 /* ColonToken */)); + nextToken(); + return true; + } + return false; + } + // Returns true on success. + function parseParameterList(signature, flags) { + // FormalParameters [Yield,Await]: (modified) + // [empty] + // FormalParameterList[?Yield,Await] + // + // FormalParameter[Yield,Await]: (modified) + // BindingElement[?Yield,Await] + // + // BindingElement [Yield,Await]: (modified) + // SingleNameBinding[?Yield,?Await] + // BindingPattern[?Yield,?Await]Initializer [In, ?Yield,?Await] opt + // + // SingleNameBinding [Yield,Await]: + // BindingIdentifier[?Yield,?Await]Initializer [In, ?Yield,?Await] opt + if (!parseExpected(20 /* OpenParenToken */)) { + signature.parameters = createMissingList(); + return false; + } + var savedYieldContext = inYieldContext(); + var savedAwaitContext = inAwaitContext(); + setYieldContext(!!(flags & 1 /* Yield */)); + setAwaitContext(!!(flags & 2 /* Await */)); + signature.parameters = flags & 32 /* JSDoc */ ? + parseDelimitedList(17 /* JSDocParameters */, parseJSDocParameter) : + parseDelimitedList(16 /* Parameters */, parseParameter); + setYieldContext(savedYieldContext); + setAwaitContext(savedAwaitContext); + return parseExpected(21 /* CloseParenToken */); + } + function parseTypeMemberSemicolon() { + // We allow type members to be separated by commas or (possibly ASI) semicolons. + // First check if it was a comma. If so, we're done with the member. + if (parseOptional(27 /* CommaToken */)) { + return; + } + // Didn't have a comma. We must have a (possible ASI) semicolon. + parseSemicolon(); + } + function parseSignatureMember(kind) { + var node = createNodeWithJSDoc(kind); + if (kind === 166 /* ConstructSignature */) { + parseExpected(99 /* NewKeyword */); + } + fillSignature(58 /* ColonToken */, 4 /* Type */, node); + parseTypeMemberSemicolon(); + return finishNode(node); + } + function isIndexSignature() { + return token() === 22 /* OpenBracketToken */ && lookAhead(isUnambiguouslyIndexSignature); + } + function isUnambiguouslyIndexSignature() { + // The only allowed sequence is: + // + // [id: + // + // However, for error recovery, we also check the following cases: + // + // [... + // [id, + // [id?, + // [id?: + // [id?] + // [public id + // [private id + // [protected id + // [] + // + nextToken(); + if (token() === 25 /* DotDotDotToken */ || token() === 23 /* CloseBracketToken */) { + return true; + } + if (ts.isModifierKind(token())) { + nextToken(); + if (isIdentifier()) { + return true; + } + } + else if (!isIdentifier()) { + return false; + } + else { + // Skip the identifier + nextToken(); + } + // A colon signifies a well formed indexer + // A comma should be a badly formed indexer because comma expressions are not allowed + // in computed properties. + if (token() === 58 /* ColonToken */ || token() === 27 /* CommaToken */) { + return true; + } + // Question mark could be an indexer with an optional property, + // or it could be a conditional expression in a computed property. + if (token() !== 57 /* QuestionToken */) { + return false; + } + // If any of the following tokens are after the question mark, it cannot + // be a conditional expression, so treat it as an indexer. + nextToken(); + return token() === 58 /* ColonToken */ || token() === 27 /* CommaToken */ || token() === 23 /* CloseBracketToken */; + } + function parseIndexSignatureDeclaration(node) { + node.kind = 167 /* IndexSignature */; + node.parameters = parseBracketedList(16 /* Parameters */, parseParameter, 22 /* OpenBracketToken */, 23 /* CloseBracketToken */); + node.type = parseTypeAnnotation(); + parseTypeMemberSemicolon(); + return finishNode(node); + } + function parsePropertyOrMethodSignature(node) { + node.name = parsePropertyName(); + node.questionToken = parseOptionalToken(57 /* QuestionToken */); + if (token() === 20 /* OpenParenToken */ || token() === 29 /* LessThanToken */) { + node.kind = 160 /* MethodSignature */; + // Method signatures don't exist in expression contexts. So they have neither + // [Yield] nor [Await] + fillSignature(58 /* ColonToken */, 4 /* Type */, node); + } + else { + node.kind = 158 /* PropertySignature */; + node.type = parseTypeAnnotation(); + if (token() === 62 /* EqualsToken */) { + // Although type literal properties cannot not have initializers, we attempt + // to parse an initializer so we can report in the checker that an interface + // property or type literal property cannot have an initializer. + node.initializer = parseInitializer(); + } + } + parseTypeMemberSemicolon(); + return finishNode(node); + } + function isTypeMemberStart() { + // Return true if we have the start of a signature member + if (token() === 20 /* OpenParenToken */ || token() === 29 /* LessThanToken */) { + return true; + } + var idToken = false; + // Eat up all modifiers, but hold on to the last one in case it is actually an identifier + while (ts.isModifierKind(token())) { + idToken = true; + nextToken(); + } + // Index signatures and computed property names are type members + if (token() === 22 /* OpenBracketToken */) { + return true; + } + // Try to get the first property-like token following all modifiers + if (isLiteralPropertyName()) { + idToken = true; + nextToken(); + } + // If we were able to get any potential identifier, check that it is + // the start of a member declaration + if (idToken) { + return token() === 20 /* OpenParenToken */ || + token() === 29 /* LessThanToken */ || + token() === 57 /* QuestionToken */ || + token() === 58 /* ColonToken */ || + token() === 27 /* CommaToken */ || + canParseSemicolon(); + } + return false; + } + function parseTypeMember() { + if (token() === 20 /* OpenParenToken */ || token() === 29 /* LessThanToken */) { + return parseSignatureMember(165 /* CallSignature */); + } + if (token() === 99 /* NewKeyword */ && lookAhead(nextTokenIsOpenParenOrLessThan)) { + return parseSignatureMember(166 /* ConstructSignature */); + } + var node = createNodeWithJSDoc(0 /* Unknown */); + node.modifiers = parseModifiers(); + if (isIndexSignature()) { + return parseIndexSignatureDeclaration(node); + } + return parsePropertyOrMethodSignature(node); + } + function nextTokenIsOpenParenOrLessThan() { + nextToken(); + return token() === 20 /* OpenParenToken */ || token() === 29 /* LessThanToken */; + } + function nextTokenIsDot() { + return nextToken() === 24 /* DotToken */; + } + function nextTokenIsOpenParenOrLessThanOrDot() { + switch (nextToken()) { + case 20 /* OpenParenToken */: + case 29 /* LessThanToken */: + case 24 /* DotToken */: + return true; + } + return false; + } + function parseTypeLiteral() { + var node = createNode(173 /* TypeLiteral */); + node.members = parseObjectTypeMembers(); + return finishNode(node); + } + function parseObjectTypeMembers() { + var members; + if (parseExpected(18 /* OpenBraceToken */)) { + members = parseList(4 /* TypeMembers */, parseTypeMember); + parseExpected(19 /* CloseBraceToken */); + } + else { + members = createMissingList(); + } + return members; + } + function isStartOfMappedType() { + nextToken(); + if (token() === 39 /* PlusToken */ || token() === 40 /* MinusToken */) { + return nextToken() === 138 /* ReadonlyKeyword */; + } + if (token() === 138 /* ReadonlyKeyword */) { + nextToken(); + } + return token() === 22 /* OpenBracketToken */ && nextTokenIsIdentifier() && nextToken() === 97 /* InKeyword */; + } + function parseMappedTypeParameter() { + var node = createNode(155 /* TypeParameter */); + node.name = parseIdentifier(); + parseExpected(97 /* InKeyword */); + node.constraint = parseType(); + return finishNode(node); + } + function parseMappedType() { + var node = createNode(186 /* MappedType */); + parseExpected(18 /* OpenBraceToken */); + if (token() === 138 /* ReadonlyKeyword */ || token() === 39 /* PlusToken */ || token() === 40 /* MinusToken */) { + node.readonlyToken = parseTokenNode(); + if (node.readonlyToken.kind !== 138 /* ReadonlyKeyword */) { + parseExpectedToken(138 /* ReadonlyKeyword */); + } + } + parseExpected(22 /* OpenBracketToken */); + node.typeParameter = parseMappedTypeParameter(); + parseExpected(23 /* CloseBracketToken */); + if (token() === 57 /* QuestionToken */ || token() === 39 /* PlusToken */ || token() === 40 /* MinusToken */) { + node.questionToken = parseTokenNode(); + if (node.questionToken.kind !== 57 /* QuestionToken */) { + parseExpectedToken(57 /* QuestionToken */); + } + } + node.type = parseTypeAnnotation(); + parseSemicolon(); + parseExpected(19 /* CloseBraceToken */); + return finishNode(node); + } + function parseTupleElementType() { + var pos = getNodePos(); + if (parseOptional(25 /* DotDotDotToken */)) { + var node = createNode(177 /* RestType */, pos); + node.type = parseType(); + return finishNode(node); + } + var type = parseType(); + if (!(contextFlags & 4194304 /* JSDoc */) && type.kind === 297 /* JSDocNullableType */ && type.pos === type.type.pos) { + type.kind = 176 /* OptionalType */; + } + return type; + } + function parseTupleType() { + var node = createNode(175 /* TupleType */); + node.elementTypes = parseBracketedList(21 /* TupleElementTypes */, parseTupleElementType, 22 /* OpenBracketToken */, 23 /* CloseBracketToken */); + return finishNode(node); + } + function parseParenthesizedType() { + var node = createNode(182 /* ParenthesizedType */); + parseExpected(20 /* OpenParenToken */); + node.type = parseType(); + parseExpected(21 /* CloseParenToken */); + return finishNode(node); + } + function parseFunctionOrConstructorType() { + var pos = getNodePos(); + var kind = parseOptional(99 /* NewKeyword */) ? 171 /* ConstructorType */ : 170 /* FunctionType */; + var node = createNodeWithJSDoc(kind, pos); + fillSignature(38 /* EqualsGreaterThanToken */, 4 /* Type */, node); + return finishNode(node); + } + function parseKeywordAndNoDot() { + var node = parseTokenNode(); + return token() === 24 /* DotToken */ ? undefined : node; + } + function parseLiteralTypeNode(negative) { + var node = createNode(187 /* LiteralType */); + var unaryMinusExpression; + if (negative) { + unaryMinusExpression = createNode(207 /* PrefixUnaryExpression */); + unaryMinusExpression.operator = 40 /* MinusToken */; + nextToken(); + } + var expression = token() === 106 /* TrueKeyword */ || token() === 91 /* FalseKeyword */ + ? parseTokenNode() + : parseLiteralLikeNode(token()); + if (negative) { + unaryMinusExpression.operand = expression; + finishNode(unaryMinusExpression); + expression = unaryMinusExpression; + } + node.literal = expression; + return finishNode(node); + } + function isStartOfTypeOfImportType() { + nextToken(); + return token() === 96 /* ImportKeyword */; + } + function parseImportType() { + sourceFile.flags |= 1048576 /* PossiblyContainsDynamicImport */; + var node = createNode(188 /* ImportType */); + if (parseOptional(108 /* TypeOfKeyword */)) { + node.isTypeOf = true; + } + parseExpected(96 /* ImportKeyword */); + parseExpected(20 /* OpenParenToken */); + node.argument = parseType(); + parseExpected(21 /* CloseParenToken */); + if (parseOptional(24 /* DotToken */)) { + node.qualifier = parseEntityName(/*allowReservedWords*/ true, ts.Diagnostics.Type_expected); + } + if (!scanner.hasPrecedingLineBreak() && reScanLessThanToken() === 29 /* LessThanToken */) { + node.typeArguments = parseBracketedList(20 /* TypeArguments */, parseType, 29 /* LessThanToken */, 31 /* GreaterThanToken */); + } + return finishNode(node); + } + function nextTokenIsNumericOrBigIntLiteral() { + nextToken(); + return token() === 8 /* NumericLiteral */ || token() === 9 /* BigIntLiteral */; + } + function parseNonArrayType() { + switch (token()) { + case 125 /* AnyKeyword */: + case 148 /* UnknownKeyword */: + case 143 /* StringKeyword */: + case 140 /* NumberKeyword */: + case 151 /* BigIntKeyword */: + case 144 /* SymbolKeyword */: + case 128 /* BooleanKeyword */: + case 146 /* UndefinedKeyword */: + case 137 /* NeverKeyword */: + case 141 /* ObjectKeyword */: + // If these are followed by a dot, then parse these out as a dotted type reference instead. + return tryParse(parseKeywordAndNoDot) || parseTypeReference(); + case 41 /* AsteriskToken */: + return parseJSDocAllType(/*postfixEquals*/ false); + case 65 /* AsteriskEqualsToken */: + return parseJSDocAllType(/*postfixEquals*/ true); + case 60 /* QuestionQuestionToken */: + // If there is '??', consider that is prefix '?' in JSDoc type. + scanner.reScanQuestionToken(); + // falls through + case 57 /* QuestionToken */: + return parseJSDocUnknownOrNullableType(); + case 94 /* FunctionKeyword */: + return parseJSDocFunctionType(); + case 53 /* ExclamationToken */: + return parseJSDocNonNullableType(); + case 14 /* NoSubstitutionTemplateLiteral */: + case 10 /* StringLiteral */: + case 8 /* NumericLiteral */: + case 9 /* BigIntLiteral */: + case 106 /* TrueKeyword */: + case 91 /* FalseKeyword */: + return parseLiteralTypeNode(); + case 40 /* MinusToken */: + return lookAhead(nextTokenIsNumericOrBigIntLiteral) ? parseLiteralTypeNode(/*negative*/ true) : parseTypeReference(); + case 110 /* VoidKeyword */: + case 100 /* NullKeyword */: + return parseTokenNode(); + case 104 /* ThisKeyword */: { + var thisKeyword = parseThisTypeNode(); + if (token() === 133 /* IsKeyword */ && !scanner.hasPrecedingLineBreak()) { + return parseThisTypePredicate(thisKeyword); + } + else { + return thisKeyword; + } + } + case 108 /* TypeOfKeyword */: + return lookAhead(isStartOfTypeOfImportType) ? parseImportType() : parseTypeQuery(); + case 18 /* OpenBraceToken */: + return lookAhead(isStartOfMappedType) ? parseMappedType() : parseTypeLiteral(); + case 22 /* OpenBracketToken */: + return parseTupleType(); + case 20 /* OpenParenToken */: + return parseParenthesizedType(); + case 96 /* ImportKeyword */: + return parseImportType(); + case 124 /* AssertsKeyword */: + return lookAhead(nextTokenIsIdentifierOrKeywordOnSameLine) ? parseAssertsTypePredicate() : parseTypeReference(); + default: + return parseTypeReference(); + } + } + function isStartOfType(inStartOfParameter) { + switch (token()) { + case 125 /* AnyKeyword */: + case 148 /* UnknownKeyword */: + case 143 /* StringKeyword */: + case 140 /* NumberKeyword */: + case 151 /* BigIntKeyword */: + case 128 /* BooleanKeyword */: + case 138 /* ReadonlyKeyword */: + case 144 /* SymbolKeyword */: + case 147 /* UniqueKeyword */: + case 110 /* VoidKeyword */: + case 146 /* UndefinedKeyword */: + case 100 /* NullKeyword */: + case 104 /* ThisKeyword */: + case 108 /* TypeOfKeyword */: + case 137 /* NeverKeyword */: + case 18 /* OpenBraceToken */: + case 22 /* OpenBracketToken */: + case 29 /* LessThanToken */: + case 51 /* BarToken */: + case 50 /* AmpersandToken */: + case 99 /* NewKeyword */: + case 10 /* StringLiteral */: + case 8 /* NumericLiteral */: + case 9 /* BigIntLiteral */: + case 106 /* TrueKeyword */: + case 91 /* FalseKeyword */: + case 141 /* ObjectKeyword */: + case 41 /* AsteriskToken */: + case 57 /* QuestionToken */: + case 53 /* ExclamationToken */: + case 25 /* DotDotDotToken */: + case 132 /* InferKeyword */: + case 96 /* ImportKeyword */: + case 124 /* AssertsKeyword */: + return true; + case 94 /* FunctionKeyword */: + return !inStartOfParameter; + case 40 /* MinusToken */: + return !inStartOfParameter && lookAhead(nextTokenIsNumericOrBigIntLiteral); + case 20 /* OpenParenToken */: + // Only consider '(' the start of a type if followed by ')', '...', an identifier, a modifier, + // or something that starts a type. We don't want to consider things like '(1)' a type. + return !inStartOfParameter && lookAhead(isStartOfParenthesizedOrFunctionType); + default: + return isIdentifier(); + } + } + function isStartOfParenthesizedOrFunctionType() { + nextToken(); + return token() === 21 /* CloseParenToken */ || isStartOfParameter(/*isJSDocParameter*/ false) || isStartOfType(); + } + function parsePostfixTypeOrHigher() { + var type = parseNonArrayType(); + while (!scanner.hasPrecedingLineBreak()) { + switch (token()) { + case 53 /* ExclamationToken */: + type = createPostfixType(298 /* JSDocNonNullableType */, type); + break; + case 57 /* QuestionToken */: + // If not in JSDoc and next token is start of a type we have a conditional type + if (!(contextFlags & 4194304 /* JSDoc */) && lookAhead(nextTokenIsStartOfType)) { + return type; + } + type = createPostfixType(297 /* JSDocNullableType */, type); + break; + case 22 /* OpenBracketToken */: + parseExpected(22 /* OpenBracketToken */); + if (isStartOfType()) { + var node = createNode(185 /* IndexedAccessType */, type.pos); + node.objectType = type; + node.indexType = parseType(); + parseExpected(23 /* CloseBracketToken */); + type = finishNode(node); + } + else { + var node = createNode(174 /* ArrayType */, type.pos); + node.elementType = type; + parseExpected(23 /* CloseBracketToken */); + type = finishNode(node); + } + break; + default: + return type; + } + } + return type; + } + function createPostfixType(kind, type) { + nextToken(); + var postfix = createNode(kind, type.pos); + postfix.type = type; + return finishNode(postfix); + } + function parseTypeOperator(operator) { + var node = createNode(184 /* TypeOperator */); + parseExpected(operator); + node.operator = operator; + node.type = parseTypeOperatorOrHigher(); + return finishNode(node); + } + function parseInferType() { + var node = createNode(181 /* InferType */); + parseExpected(132 /* InferKeyword */); + var typeParameter = createNode(155 /* TypeParameter */); + typeParameter.name = parseIdentifier(); + node.typeParameter = finishNode(typeParameter); + return finishNode(node); + } + function parseTypeOperatorOrHigher() { + var operator = token(); + switch (operator) { + case 134 /* KeyOfKeyword */: + case 147 /* UniqueKeyword */: + case 138 /* ReadonlyKeyword */: + return parseTypeOperator(operator); + case 132 /* InferKeyword */: + return parseInferType(); + } + return parsePostfixTypeOrHigher(); + } + function parseUnionOrIntersectionType(kind, parseConstituentType, operator) { + var start = scanner.getStartPos(); + var hasLeadingOperator = parseOptional(operator); + var type = parseConstituentType(); + if (token() === operator || hasLeadingOperator) { + var types = [type]; + while (parseOptional(operator)) { + types.push(parseConstituentType()); + } + var node = createNode(kind, start); + node.types = createNodeArray(types, start); + type = finishNode(node); + } + return type; + } + function parseIntersectionTypeOrHigher() { + return parseUnionOrIntersectionType(179 /* IntersectionType */, parseTypeOperatorOrHigher, 50 /* AmpersandToken */); + } + function parseUnionTypeOrHigher() { + return parseUnionOrIntersectionType(178 /* UnionType */, parseIntersectionTypeOrHigher, 51 /* BarToken */); + } + function isStartOfFunctionType() { + if (token() === 29 /* LessThanToken */) { + return true; + } + return token() === 20 /* OpenParenToken */ && lookAhead(isUnambiguouslyStartOfFunctionType); + } + function skipParameterStart() { + if (ts.isModifierKind(token())) { + // Skip modifiers + parseModifiers(); + } + if (isIdentifier() || token() === 104 /* ThisKeyword */) { + nextToken(); + return true; + } + if (token() === 22 /* OpenBracketToken */ || token() === 18 /* OpenBraceToken */) { + // Return true if we can parse an array or object binding pattern with no errors + var previousErrorCount = parseDiagnostics.length; + parseIdentifierOrPattern(); + return previousErrorCount === parseDiagnostics.length; + } + return false; + } + function isUnambiguouslyStartOfFunctionType() { + nextToken(); + if (token() === 21 /* CloseParenToken */ || token() === 25 /* DotDotDotToken */) { + // ( ) + // ( ... + return true; + } + if (skipParameterStart()) { + // We successfully skipped modifiers (if any) and an identifier or binding pattern, + // now see if we have something that indicates a parameter declaration + if (token() === 58 /* ColonToken */ || token() === 27 /* CommaToken */ || + token() === 57 /* QuestionToken */ || token() === 62 /* EqualsToken */) { + // ( xxx : + // ( xxx , + // ( xxx ? + // ( xxx = + return true; + } + if (token() === 21 /* CloseParenToken */) { + nextToken(); + if (token() === 38 /* EqualsGreaterThanToken */) { + // ( xxx ) => + return true; + } + } + } + return false; + } + function parseTypeOrTypePredicate() { + var typePredicateVariable = isIdentifier() && tryParse(parseTypePredicatePrefix); + var type = parseType(); + if (typePredicateVariable) { + var node = createNode(168 /* TypePredicate */, typePredicateVariable.pos); + node.assertsModifier = undefined; + node.parameterName = typePredicateVariable; + node.type = type; + return finishNode(node); + } + else { + return type; + } + } + function parseTypePredicatePrefix() { + var id = parseIdentifier(); + if (token() === 133 /* IsKeyword */ && !scanner.hasPrecedingLineBreak()) { + nextToken(); + return id; + } + } + function parseAssertsTypePredicate() { + var node = createNode(168 /* TypePredicate */); + node.assertsModifier = parseExpectedToken(124 /* AssertsKeyword */); + node.parameterName = token() === 104 /* ThisKeyword */ ? parseThisTypeNode() : parseIdentifier(); + node.type = parseOptional(133 /* IsKeyword */) ? parseType() : undefined; + return finishNode(node); + } + function parseType() { + // The rules about 'yield' only apply to actual code/expression contexts. They don't + // apply to 'type' contexts. So we disable these parameters here before moving on. + return doOutsideOfContext(40960 /* TypeExcludesFlags */, parseTypeWorker); + } + function parseTypeWorker(noConditionalTypes) { + if (isStartOfFunctionType() || token() === 99 /* NewKeyword */) { + return parseFunctionOrConstructorType(); + } + var type = parseUnionTypeOrHigher(); + if (!noConditionalTypes && !scanner.hasPrecedingLineBreak() && parseOptional(90 /* ExtendsKeyword */)) { + var node = createNode(180 /* ConditionalType */, type.pos); + node.checkType = type; + // The type following 'extends' is not permitted to be another conditional type + node.extendsType = parseTypeWorker(/*noConditionalTypes*/ true); + parseExpected(57 /* QuestionToken */); + node.trueType = parseTypeWorker(); + parseExpected(58 /* ColonToken */); + node.falseType = parseTypeWorker(); + return finishNode(node); + } + return type; + } + function parseTypeAnnotation() { + return parseOptional(58 /* ColonToken */) ? parseType() : undefined; + } + // EXPRESSIONS + function isStartOfLeftHandSideExpression() { + switch (token()) { + case 104 /* ThisKeyword */: + case 102 /* SuperKeyword */: + case 100 /* NullKeyword */: + case 106 /* TrueKeyword */: + case 91 /* FalseKeyword */: + case 8 /* NumericLiteral */: + case 9 /* BigIntLiteral */: + case 10 /* StringLiteral */: + case 14 /* NoSubstitutionTemplateLiteral */: + case 15 /* TemplateHead */: + case 20 /* OpenParenToken */: + case 22 /* OpenBracketToken */: + case 18 /* OpenBraceToken */: + case 94 /* FunctionKeyword */: + case 80 /* ClassKeyword */: + case 99 /* NewKeyword */: + case 43 /* SlashToken */: + case 67 /* SlashEqualsToken */: + case 75 /* Identifier */: + return true; + case 96 /* ImportKeyword */: + return lookAhead(nextTokenIsOpenParenOrLessThanOrDot); + default: + return isIdentifier(); + } + } + function isStartOfExpression() { + if (isStartOfLeftHandSideExpression()) { + return true; + } + switch (token()) { + case 39 /* PlusToken */: + case 40 /* MinusToken */: + case 54 /* TildeToken */: + case 53 /* ExclamationToken */: + case 85 /* DeleteKeyword */: + case 108 /* TypeOfKeyword */: + case 110 /* VoidKeyword */: + case 45 /* PlusPlusToken */: + case 46 /* MinusMinusToken */: + case 29 /* LessThanToken */: + case 127 /* AwaitKeyword */: + case 121 /* YieldKeyword */: + case 76 /* PrivateIdentifier */: + // Yield/await always starts an expression. Either it is an identifier (in which case + // it is definitely an expression). Or it's a keyword (either because we're in + // a generator or async function, or in strict mode (or both)) and it started a yield or await expression. + return true; + default: + // Error tolerance. If we see the start of some binary operator, we consider + // that the start of an expression. That way we'll parse out a missing identifier, + // give a good message about an identifier being missing, and then consume the + // rest of the binary expression. + if (isBinaryOperator()) { + return true; + } + return isIdentifier(); + } + } + function isStartOfExpressionStatement() { + // As per the grammar, none of '{' or 'function' or 'class' can start an expression statement. + return token() !== 18 /* OpenBraceToken */ && + token() !== 94 /* FunctionKeyword */ && + token() !== 80 /* ClassKeyword */ && + token() !== 59 /* AtToken */ && + isStartOfExpression(); + } + function parseExpression() { + // Expression[in]: + // AssignmentExpression[in] + // Expression[in] , AssignmentExpression[in] + // clear the decorator context when parsing Expression, as it should be unambiguous when parsing a decorator + var saveDecoratorContext = inDecoratorContext(); + if (saveDecoratorContext) { + setDecoratorContext(/*val*/ false); + } + var expr = parseAssignmentExpressionOrHigher(); + var operatorToken; + while ((operatorToken = parseOptionalToken(27 /* CommaToken */))) { + expr = makeBinaryExpression(expr, operatorToken, parseAssignmentExpressionOrHigher()); + } + if (saveDecoratorContext) { + setDecoratorContext(/*val*/ true); + } + return expr; + } + function parseInitializer() { + return parseOptional(62 /* EqualsToken */) ? parseAssignmentExpressionOrHigher() : undefined; + } + function parseAssignmentExpressionOrHigher() { + // AssignmentExpression[in,yield]: + // 1) ConditionalExpression[?in,?yield] + // 2) LeftHandSideExpression = AssignmentExpression[?in,?yield] + // 3) LeftHandSideExpression AssignmentOperator AssignmentExpression[?in,?yield] + // 4) ArrowFunctionExpression[?in,?yield] + // 5) AsyncArrowFunctionExpression[in,yield,await] + // 6) [+Yield] YieldExpression[?In] + // + // Note: for ease of implementation we treat productions '2' and '3' as the same thing. + // (i.e. they're both BinaryExpressions with an assignment operator in it). + // First, do the simple check if we have a YieldExpression (production '6'). + if (isYieldExpression()) { + return parseYieldExpression(); + } + // Then, check if we have an arrow function (production '4' and '5') that starts with a parenthesized + // parameter list or is an async arrow function. + // AsyncArrowFunctionExpression: + // 1) async[no LineTerminator here]AsyncArrowBindingIdentifier[?Yield][no LineTerminator here]=>AsyncConciseBody[?In] + // 2) CoverCallExpressionAndAsyncArrowHead[?Yield, ?Await][no LineTerminator here]=>AsyncConciseBody[?In] + // Production (1) of AsyncArrowFunctionExpression is parsed in "tryParseAsyncSimpleArrowFunctionExpression". + // And production (2) is parsed in "tryParseParenthesizedArrowFunctionExpression". + // + // If we do successfully parse arrow-function, we must *not* recurse for productions 1, 2 or 3. An ArrowFunction is + // not a LeftHandSideExpression, nor does it start a ConditionalExpression. So we are done + // with AssignmentExpression if we see one. + var arrowExpression = tryParseParenthesizedArrowFunctionExpression() || tryParseAsyncSimpleArrowFunctionExpression(); + if (arrowExpression) { + return arrowExpression; + } + // Now try to see if we're in production '1', '2' or '3'. A conditional expression can + // start with a LogicalOrExpression, while the assignment productions can only start with + // LeftHandSideExpressions. + // + // So, first, we try to just parse out a BinaryExpression. If we get something that is a + // LeftHandSide or higher, then we can try to parse out the assignment expression part. + // Otherwise, we try to parse out the conditional expression bit. We want to allow any + // binary expression here, so we pass in the 'lowest' precedence here so that it matches + // and consumes anything. + var expr = parseBinaryExpressionOrHigher(/*precedence*/ 0); + // To avoid a look-ahead, we did not handle the case of an arrow function with a single un-parenthesized + // parameter ('x => ...') above. We handle it here by checking if the parsed expression was a single + // identifier and the current token is an arrow. + if (expr.kind === 75 /* Identifier */ && token() === 38 /* EqualsGreaterThanToken */) { + return parseSimpleArrowFunctionExpression(expr); + } + // Now see if we might be in cases '2' or '3'. + // If the expression was a LHS expression, and we have an assignment operator, then + // we're in '2' or '3'. Consume the assignment and return. + // + // Note: we call reScanGreaterToken so that we get an appropriately merged token + // for cases like `> > =` becoming `>>=` + if (ts.isLeftHandSideExpression(expr) && ts.isAssignmentOperator(reScanGreaterToken())) { + return makeBinaryExpression(expr, parseTokenNode(), parseAssignmentExpressionOrHigher()); + } + // It wasn't an assignment or a lambda. This is a conditional expression: + return parseConditionalExpressionRest(expr); + } + function isYieldExpression() { + if (token() === 121 /* YieldKeyword */) { + // If we have a 'yield' keyword, and this is a context where yield expressions are + // allowed, then definitely parse out a yield expression. + if (inYieldContext()) { + return true; + } + // We're in a context where 'yield expr' is not allowed. However, if we can + // definitely tell that the user was trying to parse a 'yield expr' and not + // just a normal expr that start with a 'yield' identifier, then parse out + // a 'yield expr'. We can then report an error later that they are only + // allowed in generator expressions. + // + // for example, if we see 'yield(foo)', then we'll have to treat that as an + // invocation expression of something called 'yield'. However, if we have + // 'yield foo' then that is not legal as a normal expression, so we can + // definitely recognize this as a yield expression. + // + // for now we just check if the next token is an identifier. More heuristics + // can be added here later as necessary. We just need to make sure that we + // don't accidentally consume something legal. + return lookAhead(nextTokenIsIdentifierOrKeywordOrLiteralOnSameLine); + } + return false; + } + function nextTokenIsIdentifierOnSameLine() { + nextToken(); + return !scanner.hasPrecedingLineBreak() && isIdentifier(); + } + function parseYieldExpression() { + var node = createNode(212 /* YieldExpression */); + // YieldExpression[In] : + // yield + // yield [no LineTerminator here] [Lexical goal InputElementRegExp]AssignmentExpression[?In, Yield] + // yield [no LineTerminator here] * [Lexical goal InputElementRegExp]AssignmentExpression[?In, Yield] + nextToken(); + if (!scanner.hasPrecedingLineBreak() && + (token() === 41 /* AsteriskToken */ || isStartOfExpression())) { + node.asteriskToken = parseOptionalToken(41 /* AsteriskToken */); + node.expression = parseAssignmentExpressionOrHigher(); + return finishNode(node); + } + else { + // if the next token is not on the same line as yield. or we don't have an '*' or + // the start of an expression, then this is just a simple "yield" expression. + return finishNode(node); + } + } + function parseSimpleArrowFunctionExpression(identifier, asyncModifier) { + ts.Debug.assert(token() === 38 /* EqualsGreaterThanToken */, "parseSimpleArrowFunctionExpression should only have been called if we had a =>"); + var node; + if (asyncModifier) { + node = createNode(202 /* ArrowFunction */, asyncModifier.pos); + node.modifiers = asyncModifier; + } + else { + node = createNode(202 /* ArrowFunction */, identifier.pos); + } + var parameter = createNode(156 /* Parameter */, identifier.pos); + parameter.name = identifier; + finishNode(parameter); + node.parameters = createNodeArray([parameter], parameter.pos, parameter.end); + node.equalsGreaterThanToken = parseExpectedToken(38 /* EqualsGreaterThanToken */); + node.body = parseArrowFunctionExpressionBody(/*isAsync*/ !!asyncModifier); + return addJSDocComment(finishNode(node)); + } + function tryParseParenthesizedArrowFunctionExpression() { + var triState = isParenthesizedArrowFunctionExpression(); + if (triState === 0 /* False */) { + // It's definitely not a parenthesized arrow function expression. + return undefined; + } + // If we definitely have an arrow function, then we can just parse one, not requiring a + // following => or { token. Otherwise, we *might* have an arrow function. Try to parse + // it out, but don't allow any ambiguity, and return 'undefined' if this could be an + // expression instead. + var arrowFunction = triState === 1 /* True */ + ? parseParenthesizedArrowFunctionExpressionHead(/*allowAmbiguity*/ true) + : tryParse(parsePossibleParenthesizedArrowFunctionExpressionHead); + if (!arrowFunction) { + // Didn't appear to actually be a parenthesized arrow function. Just bail out. + return undefined; + } + var isAsync = hasModifierOfKind(arrowFunction, 126 /* AsyncKeyword */); + // If we have an arrow, then try to parse the body. Even if not, try to parse if we + // have an opening brace, just in case we're in an error state. + var lastToken = token(); + arrowFunction.equalsGreaterThanToken = parseExpectedToken(38 /* EqualsGreaterThanToken */); + arrowFunction.body = (lastToken === 38 /* EqualsGreaterThanToken */ || lastToken === 18 /* OpenBraceToken */) + ? parseArrowFunctionExpressionBody(isAsync) + : parseIdentifier(); + return finishNode(arrowFunction); + } + // True -> We definitely expect a parenthesized arrow function here. + // False -> There *cannot* be a parenthesized arrow function here. + // Unknown -> There *might* be a parenthesized arrow function here. + // Speculatively look ahead to be sure, and rollback if not. + function isParenthesizedArrowFunctionExpression() { + if (token() === 20 /* OpenParenToken */ || token() === 29 /* LessThanToken */ || token() === 126 /* AsyncKeyword */) { + return lookAhead(isParenthesizedArrowFunctionExpressionWorker); + } + if (token() === 38 /* EqualsGreaterThanToken */) { + // ERROR RECOVERY TWEAK: + // If we see a standalone => try to parse it as an arrow function expression as that's + // likely what the user intended to write. + return 1 /* True */; + } + // Definitely not a parenthesized arrow function. + return 0 /* False */; + } + function isParenthesizedArrowFunctionExpressionWorker() { + if (token() === 126 /* AsyncKeyword */) { + nextToken(); + if (scanner.hasPrecedingLineBreak()) { + return 0 /* False */; + } + if (token() !== 20 /* OpenParenToken */ && token() !== 29 /* LessThanToken */) { + return 0 /* False */; + } + } + var first = token(); + var second = nextToken(); + if (first === 20 /* OpenParenToken */) { + if (second === 21 /* CloseParenToken */) { + // Simple cases: "() =>", "(): ", and "() {". + // This is an arrow function with no parameters. + // The last one is not actually an arrow function, + // but this is probably what the user intended. + var third = nextToken(); + switch (third) { + case 38 /* EqualsGreaterThanToken */: + case 58 /* ColonToken */: + case 18 /* OpenBraceToken */: + return 1 /* True */; + default: + return 0 /* False */; + } + } + // If encounter "([" or "({", this could be the start of a binding pattern. + // Examples: + // ([ x ]) => { } + // ({ x }) => { } + // ([ x ]) + // ({ x }) + if (second === 22 /* OpenBracketToken */ || second === 18 /* OpenBraceToken */) { + return 2 /* Unknown */; + } + // Simple case: "(..." + // This is an arrow function with a rest parameter. + if (second === 25 /* DotDotDotToken */) { + return 1 /* True */; + } + // Check for "(xxx yyy", where xxx is a modifier and yyy is an identifier. This + // isn't actually allowed, but we want to treat it as a lambda so we can provide + // a good error message. + if (ts.isModifierKind(second) && second !== 126 /* AsyncKeyword */ && lookAhead(nextTokenIsIdentifier)) { + return 1 /* True */; + } + // If we had "(" followed by something that's not an identifier, + // then this definitely doesn't look like a lambda. "this" is not + // valid, but we want to parse it and then give a semantic error. + if (!isIdentifier() && second !== 104 /* ThisKeyword */) { + return 0 /* False */; + } + switch (nextToken()) { + case 58 /* ColonToken */: + // If we have something like "(a:", then we must have a + // type-annotated parameter in an arrow function expression. + return 1 /* True */; + case 57 /* QuestionToken */: + nextToken(); + // If we have "(a?:" or "(a?," or "(a?=" or "(a?)" then it is definitely a lambda. + if (token() === 58 /* ColonToken */ || token() === 27 /* CommaToken */ || token() === 62 /* EqualsToken */ || token() === 21 /* CloseParenToken */) { + return 1 /* True */; + } + // Otherwise it is definitely not a lambda. + return 0 /* False */; + case 27 /* CommaToken */: + case 62 /* EqualsToken */: + case 21 /* CloseParenToken */: + // If we have "(a," or "(a=" or "(a)" this *could* be an arrow function + return 2 /* Unknown */; + } + // It is definitely not an arrow function + return 0 /* False */; + } + else { + ts.Debug.assert(first === 29 /* LessThanToken */); + // If we have "<" not followed by an identifier, + // then this definitely is not an arrow function. + if (!isIdentifier()) { + return 0 /* False */; + } + // JSX overrides + if (sourceFile.languageVariant === 1 /* JSX */) { + var isArrowFunctionInJsx = lookAhead(function () { + var third = nextToken(); + if (third === 90 /* ExtendsKeyword */) { + var fourth = nextToken(); + switch (fourth) { + case 62 /* EqualsToken */: + case 31 /* GreaterThanToken */: + return false; + default: + return true; + } + } + else if (third === 27 /* CommaToken */) { + return true; + } + return false; + }); + if (isArrowFunctionInJsx) { + return 1 /* True */; + } + return 0 /* False */; + } + // This *could* be a parenthesized arrow function. + return 2 /* Unknown */; + } + } + function parsePossibleParenthesizedArrowFunctionExpressionHead() { + var tokenPos = scanner.getTokenPos(); + if (notParenthesizedArrow && notParenthesizedArrow.has(tokenPos.toString())) { + return undefined; + } + var result = parseParenthesizedArrowFunctionExpressionHead(/*allowAmbiguity*/ false); + if (!result) { + (notParenthesizedArrow || (notParenthesizedArrow = ts.createMap())).set(tokenPos.toString(), true); + } + return result; + } + function tryParseAsyncSimpleArrowFunctionExpression() { + // We do a check here so that we won't be doing unnecessarily call to "lookAhead" + if (token() === 126 /* AsyncKeyword */) { + if (lookAhead(isUnParenthesizedAsyncArrowFunctionWorker) === 1 /* True */) { + var asyncModifier = parseModifiersForArrowFunction(); + var expr = parseBinaryExpressionOrHigher(/*precedence*/ 0); + return parseSimpleArrowFunctionExpression(expr, asyncModifier); + } + } + return undefined; + } + function isUnParenthesizedAsyncArrowFunctionWorker() { + // AsyncArrowFunctionExpression: + // 1) async[no LineTerminator here]AsyncArrowBindingIdentifier[?Yield][no LineTerminator here]=>AsyncConciseBody[?In] + // 2) CoverCallExpressionAndAsyncArrowHead[?Yield, ?Await][no LineTerminator here]=>AsyncConciseBody[?In] + if (token() === 126 /* AsyncKeyword */) { + nextToken(); + // If the "async" is followed by "=>" token then it is not a beginning of an async arrow-function + // but instead a simple arrow-function which will be parsed inside "parseAssignmentExpressionOrHigher" + if (scanner.hasPrecedingLineBreak() || token() === 38 /* EqualsGreaterThanToken */) { + return 0 /* False */; + } + // Check for un-parenthesized AsyncArrowFunction + var expr = parseBinaryExpressionOrHigher(/*precedence*/ 0); + if (!scanner.hasPrecedingLineBreak() && expr.kind === 75 /* Identifier */ && token() === 38 /* EqualsGreaterThanToken */) { + return 1 /* True */; + } + } + return 0 /* False */; + } + function parseParenthesizedArrowFunctionExpressionHead(allowAmbiguity) { + var node = createNodeWithJSDoc(202 /* ArrowFunction */); + node.modifiers = parseModifiersForArrowFunction(); + var isAsync = hasModifierOfKind(node, 126 /* AsyncKeyword */) ? 2 /* Await */ : 0 /* None */; + // Arrow functions are never generators. + // + // If we're speculatively parsing a signature for a parenthesized arrow function, then + // we have to have a complete parameter list. Otherwise we might see something like + // a => (b => c) + // And think that "(b =>" was actually a parenthesized arrow function with a missing + // close paren. + if (!fillSignature(58 /* ColonToken */, isAsync, node) && !allowAmbiguity) { + return undefined; + } + // Parsing a signature isn't enough. + // Parenthesized arrow signatures often look like other valid expressions. + // For instance: + // - "(x = 10)" is an assignment expression parsed as a signature with a default parameter value. + // - "(x,y)" is a comma expression parsed as a signature with two parameters. + // - "a ? (b): c" will have "(b):" parsed as a signature with a return type annotation. + // - "a ? (b): function() {}" will too, since function() is a valid JSDoc function type. + // + // So we need just a bit of lookahead to ensure that it can only be a signature. + var hasJSDocFunctionType = node.type && ts.isJSDocFunctionType(node.type); + if (!allowAmbiguity && token() !== 38 /* EqualsGreaterThanToken */ && (hasJSDocFunctionType || token() !== 18 /* OpenBraceToken */)) { + // Returning undefined here will cause our caller to rewind to where we started from. + return undefined; + } + return node; + } + function parseArrowFunctionExpressionBody(isAsync) { + if (token() === 18 /* OpenBraceToken */) { + return parseFunctionBlock(isAsync ? 2 /* Await */ : 0 /* None */); + } + if (token() !== 26 /* SemicolonToken */ && + token() !== 94 /* FunctionKeyword */ && + token() !== 80 /* ClassKeyword */ && + isStartOfStatement() && + !isStartOfExpressionStatement()) { + // Check if we got a plain statement (i.e. no expression-statements, no function/class expressions/declarations) + // + // Here we try to recover from a potential error situation in the case where the + // user meant to supply a block. For example, if the user wrote: + // + // a => + // let v = 0; + // } + // + // they may be missing an open brace. Check to see if that's the case so we can + // try to recover better. If we don't do this, then the next close curly we see may end + // up preemptively closing the containing construct. + // + // Note: even when 'IgnoreMissingOpenBrace' is passed, parseBody will still error. + return parseFunctionBlock(16 /* IgnoreMissingOpenBrace */ | (isAsync ? 2 /* Await */ : 0 /* None */)); + } + return isAsync + ? doInAwaitContext(parseAssignmentExpressionOrHigher) + : doOutsideOfAwaitContext(parseAssignmentExpressionOrHigher); + } + function parseConditionalExpressionRest(leftOperand) { + // Note: we are passed in an expression which was produced from parseBinaryExpressionOrHigher. + var questionToken = parseOptionalToken(57 /* QuestionToken */); + if (!questionToken) { + return leftOperand; + } + // Note: we explicitly 'allowIn' in the whenTrue part of the condition expression, and + // we do not that for the 'whenFalse' part. + var node = createNode(210 /* ConditionalExpression */, leftOperand.pos); + node.condition = leftOperand; + node.questionToken = questionToken; + node.whenTrue = doOutsideOfContext(disallowInAndDecoratorContext, parseAssignmentExpressionOrHigher); + node.colonToken = parseExpectedToken(58 /* ColonToken */); + node.whenFalse = ts.nodeIsPresent(node.colonToken) + ? parseAssignmentExpressionOrHigher() + : createMissingNode(75 /* Identifier */, /*reportAtCurrentPosition*/ false, ts.Diagnostics._0_expected, ts.tokenToString(58 /* ColonToken */)); + return finishNode(node); + } + function parseBinaryExpressionOrHigher(precedence) { + var leftOperand = parseUnaryExpressionOrHigher(); + return parseBinaryExpressionRest(precedence, leftOperand); + } + function isInOrOfKeyword(t) { + return t === 97 /* InKeyword */ || t === 152 /* OfKeyword */; + } + function parseBinaryExpressionRest(precedence, leftOperand) { + while (true) { + // We either have a binary operator here, or we're finished. We call + // reScanGreaterToken so that we merge token sequences like > and = into >= + reScanGreaterToken(); + var newPrecedence = ts.getBinaryOperatorPrecedence(token()); + // Check the precedence to see if we should "take" this operator + // - For left associative operator (all operator but **), consume the operator, + // recursively call the function below, and parse binaryExpression as a rightOperand + // of the caller if the new precedence of the operator is greater then or equal to the current precedence. + // For example: + // a - b - c; + // ^token; leftOperand = b. Return b to the caller as a rightOperand + // a * b - c + // ^token; leftOperand = b. Return b to the caller as a rightOperand + // a - b * c; + // ^token; leftOperand = b. Return b * c to the caller as a rightOperand + // - For right associative operator (**), consume the operator, recursively call the function + // and parse binaryExpression as a rightOperand of the caller if the new precedence of + // the operator is strictly grater than the current precedence + // For example: + // a ** b ** c; + // ^^token; leftOperand = b. Return b ** c to the caller as a rightOperand + // a - b ** c; + // ^^token; leftOperand = b. Return b ** c to the caller as a rightOperand + // a ** b - c + // ^token; leftOperand = b. Return b to the caller as a rightOperand + var consumeCurrentOperator = token() === 42 /* AsteriskAsteriskToken */ ? + newPrecedence >= precedence : + newPrecedence > precedence; + if (!consumeCurrentOperator) { + break; + } + if (token() === 97 /* InKeyword */ && inDisallowInContext()) { + break; + } + if (token() === 123 /* AsKeyword */) { + // Make sure we *do* perform ASI for constructs like this: + // var x = foo + // as (Bar) + // This should be parsed as an initialized variable, followed + // by a function call to 'as' with the argument 'Bar' + if (scanner.hasPrecedingLineBreak()) { + break; + } + else { + nextToken(); + leftOperand = makeAsExpression(leftOperand, parseType()); + } + } + else { + leftOperand = makeBinaryExpression(leftOperand, parseTokenNode(), parseBinaryExpressionOrHigher(newPrecedence)); + } + } + return leftOperand; + } + function isBinaryOperator() { + if (inDisallowInContext() && token() === 97 /* InKeyword */) { + return false; + } + return ts.getBinaryOperatorPrecedence(token()) > 0; + } + function makeBinaryExpression(left, operatorToken, right) { + var node = createNode(209 /* BinaryExpression */, left.pos); + node.left = left; + node.operatorToken = operatorToken; + node.right = right; + return finishNode(node); + } + function makeAsExpression(left, right) { + var node = createNode(217 /* AsExpression */, left.pos); + node.expression = left; + node.type = right; + return finishNode(node); + } + function parsePrefixUnaryExpression() { + var node = createNode(207 /* PrefixUnaryExpression */); + node.operator = token(); + nextToken(); + node.operand = parseSimpleUnaryExpression(); + return finishNode(node); + } + function parseDeleteExpression() { + var node = createNode(203 /* DeleteExpression */); + nextToken(); + node.expression = parseSimpleUnaryExpression(); + return finishNode(node); + } + function parseTypeOfExpression() { + var node = createNode(204 /* TypeOfExpression */); + nextToken(); + node.expression = parseSimpleUnaryExpression(); + return finishNode(node); + } + function parseVoidExpression() { + var node = createNode(205 /* VoidExpression */); + nextToken(); + node.expression = parseSimpleUnaryExpression(); + return finishNode(node); + } + function isAwaitExpression() { + if (token() === 127 /* AwaitKeyword */) { + if (inAwaitContext()) { + return true; + } + // here we are using similar heuristics as 'isYieldExpression' + return lookAhead(nextTokenIsIdentifierOrKeywordOrLiteralOnSameLine); + } + return false; + } + function parseAwaitExpression() { + var node = createNode(206 /* AwaitExpression */); + nextToken(); + node.expression = parseSimpleUnaryExpression(); + return finishNode(node); + } + /** + * Parse ES7 exponential expression and await expression + * + * ES7 ExponentiationExpression: + * 1) UnaryExpression[?Yield] + * 2) UpdateExpression[?Yield] ** ExponentiationExpression[?Yield] + * + */ + function parseUnaryExpressionOrHigher() { + /** + * ES7 UpdateExpression: + * 1) LeftHandSideExpression[?Yield] + * 2) LeftHandSideExpression[?Yield][no LineTerminator here]++ + * 3) LeftHandSideExpression[?Yield][no LineTerminator here]-- + * 4) ++UnaryExpression[?Yield] + * 5) --UnaryExpression[?Yield] + */ + if (isUpdateExpression()) { + var updateExpression = parseUpdateExpression(); + return token() === 42 /* AsteriskAsteriskToken */ ? + parseBinaryExpressionRest(ts.getBinaryOperatorPrecedence(token()), updateExpression) : + updateExpression; + } + /** + * ES7 UnaryExpression: + * 1) UpdateExpression[?yield] + * 2) delete UpdateExpression[?yield] + * 3) void UpdateExpression[?yield] + * 4) typeof UpdateExpression[?yield] + * 5) + UpdateExpression[?yield] + * 6) - UpdateExpression[?yield] + * 7) ~ UpdateExpression[?yield] + * 8) ! UpdateExpression[?yield] + */ + var unaryOperator = token(); + var simpleUnaryExpression = parseSimpleUnaryExpression(); + if (token() === 42 /* AsteriskAsteriskToken */) { + var pos = ts.skipTrivia(sourceText, simpleUnaryExpression.pos); + var end = simpleUnaryExpression.end; + if (simpleUnaryExpression.kind === 199 /* TypeAssertionExpression */) { + parseErrorAt(pos, end, ts.Diagnostics.A_type_assertion_expression_is_not_allowed_in_the_left_hand_side_of_an_exponentiation_expression_Consider_enclosing_the_expression_in_parentheses); + } + else { + parseErrorAt(pos, end, ts.Diagnostics.An_unary_expression_with_the_0_operator_is_not_allowed_in_the_left_hand_side_of_an_exponentiation_expression_Consider_enclosing_the_expression_in_parentheses, ts.tokenToString(unaryOperator)); + } + } + return simpleUnaryExpression; + } + /** + * Parse ES7 simple-unary expression or higher: + * + * ES7 UnaryExpression: + * 1) UpdateExpression[?yield] + * 2) delete UnaryExpression[?yield] + * 3) void UnaryExpression[?yield] + * 4) typeof UnaryExpression[?yield] + * 5) + UnaryExpression[?yield] + * 6) - UnaryExpression[?yield] + * 7) ~ UnaryExpression[?yield] + * 8) ! UnaryExpression[?yield] + * 9) [+Await] await UnaryExpression[?yield] + */ + function parseSimpleUnaryExpression() { + switch (token()) { + case 39 /* PlusToken */: + case 40 /* MinusToken */: + case 54 /* TildeToken */: + case 53 /* ExclamationToken */: + return parsePrefixUnaryExpression(); + case 85 /* DeleteKeyword */: + return parseDeleteExpression(); + case 108 /* TypeOfKeyword */: + return parseTypeOfExpression(); + case 110 /* VoidKeyword */: + return parseVoidExpression(); + case 29 /* LessThanToken */: + // This is modified UnaryExpression grammar in TypeScript + // UnaryExpression (modified): + // < type > UnaryExpression + return parseTypeAssertion(); + case 127 /* AwaitKeyword */: + if (isAwaitExpression()) { + return parseAwaitExpression(); + } + // falls through + default: + return parseUpdateExpression(); + } + } + /** + * Check if the current token can possibly be an ES7 increment expression. + * + * ES7 UpdateExpression: + * LeftHandSideExpression[?Yield] + * LeftHandSideExpression[?Yield][no LineTerminator here]++ + * LeftHandSideExpression[?Yield][no LineTerminator here]-- + * ++LeftHandSideExpression[?Yield] + * --LeftHandSideExpression[?Yield] + */ + function isUpdateExpression() { + // This function is called inside parseUnaryExpression to decide + // whether to call parseSimpleUnaryExpression or call parseUpdateExpression directly + switch (token()) { + case 39 /* PlusToken */: + case 40 /* MinusToken */: + case 54 /* TildeToken */: + case 53 /* ExclamationToken */: + case 85 /* DeleteKeyword */: + case 108 /* TypeOfKeyword */: + case 110 /* VoidKeyword */: + case 127 /* AwaitKeyword */: + return false; + case 29 /* LessThanToken */: + // If we are not in JSX context, we are parsing TypeAssertion which is an UnaryExpression + if (sourceFile.languageVariant !== 1 /* JSX */) { + return false; + } + // We are in JSX context and the token is part of JSXElement. + // falls through + default: + return true; + } + } + /** + * Parse ES7 UpdateExpression. UpdateExpression is used instead of ES6's PostFixExpression. + * + * ES7 UpdateExpression[yield]: + * 1) LeftHandSideExpression[?yield] + * 2) LeftHandSideExpression[?yield] [[no LineTerminator here]]++ + * 3) LeftHandSideExpression[?yield] [[no LineTerminator here]]-- + * 4) ++LeftHandSideExpression[?yield] + * 5) --LeftHandSideExpression[?yield] + * In TypeScript (2), (3) are parsed as PostfixUnaryExpression. (4), (5) are parsed as PrefixUnaryExpression + */ + function parseUpdateExpression() { + if (token() === 45 /* PlusPlusToken */ || token() === 46 /* MinusMinusToken */) { + var node = createNode(207 /* PrefixUnaryExpression */); + node.operator = token(); + nextToken(); + node.operand = parseLeftHandSideExpressionOrHigher(); + return finishNode(node); + } + else if (sourceFile.languageVariant === 1 /* JSX */ && token() === 29 /* LessThanToken */ && lookAhead(nextTokenIsIdentifierOrKeywordOrGreaterThan)) { + // JSXElement is part of primaryExpression + return parseJsxElementOrSelfClosingElementOrFragment(/*inExpressionContext*/ true); + } + var expression = parseLeftHandSideExpressionOrHigher(); + ts.Debug.assert(ts.isLeftHandSideExpression(expression)); + if ((token() === 45 /* PlusPlusToken */ || token() === 46 /* MinusMinusToken */) && !scanner.hasPrecedingLineBreak()) { + var node = createNode(208 /* PostfixUnaryExpression */, expression.pos); + node.operand = expression; + node.operator = token(); + nextToken(); + return finishNode(node); + } + return expression; + } + function parseLeftHandSideExpressionOrHigher() { + // Original Ecma: + // LeftHandSideExpression: See 11.2 + // NewExpression + // CallExpression + // + // Our simplification: + // + // LeftHandSideExpression: See 11.2 + // MemberExpression + // CallExpression + // + // See comment in parseMemberExpressionOrHigher on how we replaced NewExpression with + // MemberExpression to make our lives easier. + // + // to best understand the below code, it's important to see how CallExpression expands + // out into its own productions: + // + // CallExpression: + // MemberExpression Arguments + // CallExpression Arguments + // CallExpression[Expression] + // CallExpression.IdentifierName + // import (AssignmentExpression) + // super Arguments + // super.IdentifierName + // + // Because of the recursion in these calls, we need to bottom out first. There are three + // bottom out states we can run into: 1) We see 'super' which must start either of + // the last two CallExpression productions. 2) We see 'import' which must start import call. + // 3)we have a MemberExpression which either completes the LeftHandSideExpression, + // or starts the beginning of the first four CallExpression productions. + var expression; + if (token() === 96 /* ImportKeyword */) { + if (lookAhead(nextTokenIsOpenParenOrLessThan)) { + // We don't want to eagerly consume all import keyword as import call expression so we look ahead to find "(" + // For example: + // var foo3 = require("subfolder + // import * as foo1 from "module-from-node + // We want this import to be a statement rather than import call expression + sourceFile.flags |= 1048576 /* PossiblyContainsDynamicImport */; + expression = parseTokenNode(); + } + else if (lookAhead(nextTokenIsDot)) { + // This is an 'import.*' metaproperty (i.e. 'import.meta') + var fullStart = scanner.getStartPos(); + nextToken(); // advance past the 'import' + nextToken(); // advance past the dot + var node = createNode(219 /* MetaProperty */, fullStart); + node.keywordToken = 96 /* ImportKeyword */; + node.name = parseIdentifierName(); + expression = finishNode(node); + sourceFile.flags |= 2097152 /* PossiblyContainsImportMeta */; + } + else { + expression = parseMemberExpressionOrHigher(); + } + } + else { + expression = token() === 102 /* SuperKeyword */ ? parseSuperExpression() : parseMemberExpressionOrHigher(); + } + // Now, we *may* be complete. However, we might have consumed the start of a + // CallExpression or OptionalExpression. As such, we need to consume the rest + // of it here to be complete. + return parseCallExpressionRest(expression); + } + function parseMemberExpressionOrHigher() { + // Note: to make our lives simpler, we decompose the NewExpression productions and + // place ObjectCreationExpression and FunctionExpression into PrimaryExpression. + // like so: + // + // PrimaryExpression : See 11.1 + // this + // Identifier + // Literal + // ArrayLiteral + // ObjectLiteral + // (Expression) + // FunctionExpression + // new MemberExpression Arguments? + // + // MemberExpression : See 11.2 + // PrimaryExpression + // MemberExpression[Expression] + // MemberExpression.IdentifierName + // + // CallExpression : See 11.2 + // MemberExpression + // CallExpression Arguments + // CallExpression[Expression] + // CallExpression.IdentifierName + // + // Technically this is ambiguous. i.e. CallExpression defines: + // + // CallExpression: + // CallExpression Arguments + // + // If you see: "new Foo()" + // + // Then that could be treated as a single ObjectCreationExpression, or it could be + // treated as the invocation of "new Foo". We disambiguate that in code (to match + // the original grammar) by making sure that if we see an ObjectCreationExpression + // we always consume arguments if they are there. So we treat "new Foo()" as an + // object creation only, and not at all as an invocation. Another way to think + // about this is that for every "new" that we see, we will consume an argument list if + // it is there as part of the *associated* object creation node. Any additional + // argument lists we see, will become invocation expressions. + // + // Because there are no other places in the grammar now that refer to FunctionExpression + // or ObjectCreationExpression, it is safe to push down into the PrimaryExpression + // production. + // + // Because CallExpression and MemberExpression are left recursive, we need to bottom out + // of the recursion immediately. So we parse out a primary expression to start with. + var expression = parsePrimaryExpression(); + return parseMemberExpressionRest(expression, /*allowOptionalChain*/ true); + } + function parseSuperExpression() { + var expression = parseTokenNode(); + if (token() === 29 /* LessThanToken */) { + var startPos = getNodePos(); + var typeArguments = tryParse(parseTypeArgumentsInExpression); + if (typeArguments !== undefined) { + parseErrorAt(startPos, getNodePos(), ts.Diagnostics.super_may_not_use_type_arguments); + } + } + if (token() === 20 /* OpenParenToken */ || token() === 24 /* DotToken */ || token() === 22 /* OpenBracketToken */) { + return expression; + } + // If we have seen "super" it must be followed by '(' or '.'. + // If it wasn't then just try to parse out a '.' and report an error. + var node = createNode(194 /* PropertyAccessExpression */, expression.pos); + node.expression = expression; + parseExpectedToken(24 /* DotToken */, ts.Diagnostics.super_must_be_followed_by_an_argument_list_or_member_access); + // private names will never work with `super` (`super.#foo`), but that's a semantic error, not syntactic + node.name = parseRightSideOfDot(/*allowIdentifierNames*/ true, /*allowPrivateIdentifiers*/ true); + return finishNode(node); + } + function parseJsxElementOrSelfClosingElementOrFragment(inExpressionContext) { + var opening = parseJsxOpeningOrSelfClosingElementOrOpeningFragment(inExpressionContext); + var result; + if (opening.kind === 268 /* JsxOpeningElement */) { + var node = createNode(266 /* JsxElement */, opening.pos); + node.openingElement = opening; + node.children = parseJsxChildren(node.openingElement); + node.closingElement = parseJsxClosingElement(inExpressionContext); + if (!tagNamesAreEquivalent(node.openingElement.tagName, node.closingElement.tagName)) { + parseErrorAtRange(node.closingElement, ts.Diagnostics.Expected_corresponding_JSX_closing_tag_for_0, ts.getTextOfNodeFromSourceText(sourceText, node.openingElement.tagName)); + } + result = finishNode(node); + } + else if (opening.kind === 271 /* JsxOpeningFragment */) { + var node = createNode(270 /* JsxFragment */, opening.pos); + node.openingFragment = opening; + node.children = parseJsxChildren(node.openingFragment); + node.closingFragment = parseJsxClosingFragment(inExpressionContext); + result = finishNode(node); + } + else { + ts.Debug.assert(opening.kind === 267 /* JsxSelfClosingElement */); + // Nothing else to do for self-closing elements + result = opening; + } + // If the user writes the invalid code '
' in an expression context (i.e. not wrapped in + // an enclosing tag), we'll naively try to parse ^ this as a 'less than' operator and the remainder of the tag + // as garbage, which will cause the formatter to badly mangle the JSX. Perform a speculative parse of a JSX + // element if we see a < token so that we can wrap it in a synthetic binary expression so the formatter + // does less damage and we can report a better error. + // Since JSX elements are invalid < operands anyway, this lookahead parse will only occur in error scenarios + // of one sort or another. + if (inExpressionContext && token() === 29 /* LessThanToken */) { + var invalidElement = tryParse(function () { return parseJsxElementOrSelfClosingElementOrFragment(/*inExpressionContext*/ true); }); + if (invalidElement) { + parseErrorAtCurrentToken(ts.Diagnostics.JSX_expressions_must_have_one_parent_element); + var badNode = createNode(209 /* BinaryExpression */, result.pos); + badNode.end = invalidElement.end; + badNode.left = result; + badNode.right = invalidElement; + badNode.operatorToken = createMissingNode(27 /* CommaToken */, /*reportAtCurrentPosition*/ false); + badNode.operatorToken.pos = badNode.operatorToken.end = badNode.right.pos; + return badNode; + } + } + return result; + } + function parseJsxText() { + var node = createNode(11 /* JsxText */); + node.text = scanner.getTokenValue(); + node.containsOnlyTriviaWhiteSpaces = currentToken === 12 /* JsxTextAllWhiteSpaces */; + currentToken = scanner.scanJsxToken(); + return finishNode(node); + } + function parseJsxChild(openingTag, token) { + switch (token) { + case 1 /* EndOfFileToken */: + // If we hit EOF, issue the error at the tag that lacks the closing element + // rather than at the end of the file (which is useless) + if (ts.isJsxOpeningFragment(openingTag)) { + parseErrorAtRange(openingTag, ts.Diagnostics.JSX_fragment_has_no_corresponding_closing_tag); + } + else { + // We want the error span to cover only 'Foo.Bar' in < Foo.Bar > + // or to cover only 'Foo' in < Foo > + var tag = openingTag.tagName; + var start = ts.skipTrivia(sourceText, tag.pos); + parseErrorAt(start, tag.end, ts.Diagnostics.JSX_element_0_has_no_corresponding_closing_tag, ts.getTextOfNodeFromSourceText(sourceText, openingTag.tagName)); + } + return undefined; + case 30 /* LessThanSlashToken */: + case 7 /* ConflictMarkerTrivia */: + return undefined; + case 11 /* JsxText */: + case 12 /* JsxTextAllWhiteSpaces */: + return parseJsxText(); + case 18 /* OpenBraceToken */: + return parseJsxExpression(/*inExpressionContext*/ false); + case 29 /* LessThanToken */: + return parseJsxElementOrSelfClosingElementOrFragment(/*inExpressionContext*/ false); + default: + return ts.Debug.assertNever(token); + } + } + function parseJsxChildren(openingTag) { + var list = []; + var listPos = getNodePos(); + var saveParsingContext = parsingContext; + parsingContext |= 1 << 14 /* JsxChildren */; + while (true) { + var child = parseJsxChild(openingTag, currentToken = scanner.reScanJsxToken()); + if (!child) + break; + list.push(child); + } + parsingContext = saveParsingContext; + return createNodeArray(list, listPos); + } + function parseJsxAttributes() { + var jsxAttributes = createNode(274 /* JsxAttributes */); + jsxAttributes.properties = parseList(13 /* JsxAttributes */, parseJsxAttribute); + return finishNode(jsxAttributes); + } + function parseJsxOpeningOrSelfClosingElementOrOpeningFragment(inExpressionContext) { + var fullStart = scanner.getStartPos(); + parseExpected(29 /* LessThanToken */); + if (token() === 31 /* GreaterThanToken */) { + // See below for explanation of scanJsxText + var node_1 = createNode(271 /* JsxOpeningFragment */, fullStart); + scanJsxText(); + return finishNode(node_1); + } + var tagName = parseJsxElementName(); + var typeArguments = tryParseTypeArguments(); + var attributes = parseJsxAttributes(); + var node; + if (token() === 31 /* GreaterThanToken */) { + // Closing tag, so scan the immediately-following text with the JSX scanning instead + // of regular scanning to avoid treating illegal characters (e.g. '#') as immediate + // scanning errors + node = createNode(268 /* JsxOpeningElement */, fullStart); + scanJsxText(); + } + else { + parseExpected(43 /* SlashToken */); + if (inExpressionContext) { + parseExpected(31 /* GreaterThanToken */); + } + else { + parseExpected(31 /* GreaterThanToken */, /*diagnostic*/ undefined, /*shouldAdvance*/ false); + scanJsxText(); + } + node = createNode(267 /* JsxSelfClosingElement */, fullStart); + } + node.tagName = tagName; + node.typeArguments = typeArguments; + node.attributes = attributes; + return finishNode(node); + } + function parseJsxElementName() { + scanJsxIdentifier(); + // JsxElement can have name in the form of + // propertyAccessExpression + // primaryExpression in the form of an identifier and "this" keyword + // We can't just simply use parseLeftHandSideExpressionOrHigher because then we will start consider class,function etc as a keyword + // We only want to consider "this" as a primaryExpression + var expression = token() === 104 /* ThisKeyword */ ? + parseTokenNode() : parseIdentifierName(); + while (parseOptional(24 /* DotToken */)) { + var propertyAccess = createNode(194 /* PropertyAccessExpression */, expression.pos); + propertyAccess.expression = expression; + propertyAccess.name = parseRightSideOfDot(/*allowIdentifierNames*/ true, /*allowPrivateIdentifiers*/ false); + expression = finishNode(propertyAccess); + } + return expression; + } + function parseJsxExpression(inExpressionContext) { + var node = createNode(276 /* JsxExpression */); + if (!parseExpected(18 /* OpenBraceToken */)) { + return undefined; + } + if (token() !== 19 /* CloseBraceToken */) { + node.dotDotDotToken = parseOptionalToken(25 /* DotDotDotToken */); + // Only an AssignmentExpression is valid here per the JSX spec, + // but we can unambiguously parse a comma sequence and provide + // a better error message in grammar checking. + node.expression = parseExpression(); + } + if (inExpressionContext) { + parseExpected(19 /* CloseBraceToken */); + } + else { + if (parseExpected(19 /* CloseBraceToken */, /*message*/ undefined, /*shouldAdvance*/ false)) { + scanJsxText(); + } + } + return finishNode(node); + } + function parseJsxAttribute() { + if (token() === 18 /* OpenBraceToken */) { + return parseJsxSpreadAttribute(); + } + scanJsxIdentifier(); + var node = createNode(273 /* JsxAttribute */); + node.name = parseIdentifierName(); + if (token() === 62 /* EqualsToken */) { + switch (scanJsxAttributeValue()) { + case 10 /* StringLiteral */: + node.initializer = parseLiteralNode(); + break; + default: + node.initializer = parseJsxExpression(/*inExpressionContext*/ true); + break; + } + } + return finishNode(node); + } + function parseJsxSpreadAttribute() { + var node = createNode(275 /* JsxSpreadAttribute */); + parseExpected(18 /* OpenBraceToken */); + parseExpected(25 /* DotDotDotToken */); + node.expression = parseExpression(); + parseExpected(19 /* CloseBraceToken */); + return finishNode(node); + } + function parseJsxClosingElement(inExpressionContext) { + var node = createNode(269 /* JsxClosingElement */); + parseExpected(30 /* LessThanSlashToken */); + node.tagName = parseJsxElementName(); + if (inExpressionContext) { + parseExpected(31 /* GreaterThanToken */); + } + else { + parseExpected(31 /* GreaterThanToken */, /*diagnostic*/ undefined, /*shouldAdvance*/ false); + scanJsxText(); + } + return finishNode(node); + } + function parseJsxClosingFragment(inExpressionContext) { + var node = createNode(272 /* JsxClosingFragment */); + parseExpected(30 /* LessThanSlashToken */); + if (ts.tokenIsIdentifierOrKeyword(token())) { + parseErrorAtRange(parseJsxElementName(), ts.Diagnostics.Expected_corresponding_closing_tag_for_JSX_fragment); + } + if (inExpressionContext) { + parseExpected(31 /* GreaterThanToken */); + } + else { + parseExpected(31 /* GreaterThanToken */, /*diagnostic*/ undefined, /*shouldAdvance*/ false); + scanJsxText(); + } + return finishNode(node); + } + function parseTypeAssertion() { + var node = createNode(199 /* TypeAssertionExpression */); + parseExpected(29 /* LessThanToken */); + node.type = parseType(); + parseExpected(31 /* GreaterThanToken */); + node.expression = parseSimpleUnaryExpression(); + return finishNode(node); + } + function nextTokenIsIdentifierOrKeywordOrOpenBracketOrTemplate() { + nextToken(); + return ts.tokenIsIdentifierOrKeyword(token()) + || token() === 22 /* OpenBracketToken */ + || isTemplateStartOfTaggedTemplate(); + } + function isStartOfOptionalPropertyOrElementAccessChain() { + return token() === 28 /* QuestionDotToken */ + && lookAhead(nextTokenIsIdentifierOrKeywordOrOpenBracketOrTemplate); + } + function tryReparseOptionalChain(node) { + if (node.flags & 32 /* OptionalChain */) { + return true; + } + // check for an optional chain in a non-null expression + if (ts.isNonNullExpression(node)) { + var expr = node.expression; + while (ts.isNonNullExpression(expr) && !(expr.flags & 32 /* OptionalChain */)) { + expr = expr.expression; + } + if (expr.flags & 32 /* OptionalChain */) { + // this is part of an optional chain. Walk down from `node` to `expression` and set the flag. + while (ts.isNonNullExpression(node)) { + node.flags |= 32 /* OptionalChain */; + node = node.expression; + } + return true; + } + } + return false; + } + function parsePropertyAccessExpressionRest(expression, questionDotToken) { + var propertyAccess = createNode(194 /* PropertyAccessExpression */, expression.pos); + propertyAccess.expression = expression; + propertyAccess.questionDotToken = questionDotToken; + propertyAccess.name = parseRightSideOfDot(/*allowIdentifierNames*/ true, /*allowPrivateIdentifiers*/ true); + if (questionDotToken || tryReparseOptionalChain(expression)) { + propertyAccess.flags |= 32 /* OptionalChain */; + if (ts.isPrivateIdentifier(propertyAccess.name)) { + parseErrorAtRange(propertyAccess.name, ts.Diagnostics.An_optional_chain_cannot_contain_private_identifiers); + } + } + return finishNode(propertyAccess); + } + function parseElementAccessExpressionRest(expression, questionDotToken) { + var indexedAccess = createNode(195 /* ElementAccessExpression */, expression.pos); + indexedAccess.expression = expression; + indexedAccess.questionDotToken = questionDotToken; + if (token() === 23 /* CloseBracketToken */) { + indexedAccess.argumentExpression = createMissingNode(75 /* Identifier */, /*reportAtCurrentPosition*/ true, ts.Diagnostics.An_element_access_expression_should_take_an_argument); + } + else { + var argument = allowInAnd(parseExpression); + if (ts.isStringOrNumericLiteralLike(argument)) { + argument.text = internIdentifier(argument.text); + } + indexedAccess.argumentExpression = argument; + } + parseExpected(23 /* CloseBracketToken */); + if (questionDotToken || tryReparseOptionalChain(expression)) { + indexedAccess.flags |= 32 /* OptionalChain */; + } + return finishNode(indexedAccess); + } + function parseMemberExpressionRest(expression, allowOptionalChain) { + while (true) { + var questionDotToken = void 0; + var isPropertyAccess = false; + if (allowOptionalChain && isStartOfOptionalPropertyOrElementAccessChain()) { + questionDotToken = parseExpectedToken(28 /* QuestionDotToken */); + isPropertyAccess = ts.tokenIsIdentifierOrKeyword(token()); + } + else { + isPropertyAccess = parseOptional(24 /* DotToken */); + } + if (isPropertyAccess) { + expression = parsePropertyAccessExpressionRest(expression, questionDotToken); + continue; + } + if (!questionDotToken && token() === 53 /* ExclamationToken */ && !scanner.hasPrecedingLineBreak()) { + nextToken(); + var nonNullExpression = createNode(218 /* NonNullExpression */, expression.pos); + nonNullExpression.expression = expression; + expression = finishNode(nonNullExpression); + continue; + } + // when in the [Decorator] context, we do not parse ElementAccess as it could be part of a ComputedPropertyName + if ((questionDotToken || !inDecoratorContext()) && parseOptional(22 /* OpenBracketToken */)) { + expression = parseElementAccessExpressionRest(expression, questionDotToken); + continue; + } + if (isTemplateStartOfTaggedTemplate()) { + expression = parseTaggedTemplateRest(expression, questionDotToken, /*typeArguments*/ undefined); + continue; + } + return expression; + } + } + function isTemplateStartOfTaggedTemplate() { + return token() === 14 /* NoSubstitutionTemplateLiteral */ || token() === 15 /* TemplateHead */; + } + function parseTaggedTemplateRest(tag, questionDotToken, typeArguments) { + var tagExpression = createNode(198 /* TaggedTemplateExpression */, tag.pos); + tagExpression.tag = tag; + tagExpression.questionDotToken = questionDotToken; + tagExpression.typeArguments = typeArguments; + tagExpression.template = token() === 14 /* NoSubstitutionTemplateLiteral */ + ? (reScanTemplateHeadOrNoSubstitutionTemplate(), parseLiteralNode()) + : parseTemplateExpression(/*isTaggedTemplate*/ true); + if (questionDotToken || tag.flags & 32 /* OptionalChain */) { + tagExpression.flags |= 32 /* OptionalChain */; + } + return finishNode(tagExpression); + } + function parseCallExpressionRest(expression) { + while (true) { + expression = parseMemberExpressionRest(expression, /*allowOptionalChain*/ true); + var questionDotToken = parseOptionalToken(28 /* QuestionDotToken */); + // handle 'foo<()' + if (token() === 29 /* LessThanToken */ || token() === 47 /* LessThanLessThanToken */) { + // See if this is the start of a generic invocation. If so, consume it and + // keep checking for postfix expressions. Otherwise, it's just a '<' that's + // part of an arithmetic expression. Break out so we consume it higher in the + // stack. + var typeArguments = tryParse(parseTypeArgumentsInExpression); + if (typeArguments) { + if (isTemplateStartOfTaggedTemplate()) { + expression = parseTaggedTemplateRest(expression, questionDotToken, typeArguments); + continue; + } + var callExpr = createNode(196 /* CallExpression */, expression.pos); + callExpr.expression = expression; + callExpr.questionDotToken = questionDotToken; + callExpr.typeArguments = typeArguments; + callExpr.arguments = parseArgumentList(); + if (questionDotToken || tryReparseOptionalChain(expression)) { + callExpr.flags |= 32 /* OptionalChain */; + } + expression = finishNode(callExpr); + continue; + } + } + else if (token() === 20 /* OpenParenToken */) { + var callExpr = createNode(196 /* CallExpression */, expression.pos); + callExpr.expression = expression; + callExpr.questionDotToken = questionDotToken; + callExpr.arguments = parseArgumentList(); + if (questionDotToken || tryReparseOptionalChain(expression)) { + callExpr.flags |= 32 /* OptionalChain */; + } + expression = finishNode(callExpr); + continue; + } + if (questionDotToken) { + // We failed to parse anything, so report a missing identifier here. + var propertyAccess = createNode(194 /* PropertyAccessExpression */, expression.pos); + propertyAccess.expression = expression; + propertyAccess.questionDotToken = questionDotToken; + propertyAccess.name = createMissingNode(75 /* Identifier */, /*reportAtCurrentPosition*/ false, ts.Diagnostics.Identifier_expected); + propertyAccess.flags |= 32 /* OptionalChain */; + expression = finishNode(propertyAccess); + } + break; + } + return expression; + } + function parseArgumentList() { + parseExpected(20 /* OpenParenToken */); + var result = parseDelimitedList(11 /* ArgumentExpressions */, parseArgumentExpression); + parseExpected(21 /* CloseParenToken */); + return result; + } + function parseTypeArgumentsInExpression() { + if (reScanLessThanToken() !== 29 /* LessThanToken */) { + return undefined; + } + nextToken(); + var typeArguments = parseDelimitedList(20 /* TypeArguments */, parseType); + if (!parseExpected(31 /* GreaterThanToken */)) { + // If it doesn't have the closing `>` then it's definitely not an type argument list. + return undefined; + } + // If we have a '<', then only parse this as a argument list if the type arguments + // are complete and we have an open paren. if we don't, rewind and return nothing. + return typeArguments && canFollowTypeArgumentsInExpression() + ? typeArguments + : undefined; + } + function canFollowTypeArgumentsInExpression() { + switch (token()) { + case 20 /* OpenParenToken */: // foo( + case 14 /* NoSubstitutionTemplateLiteral */: // foo `...` + case 15 /* TemplateHead */: // foo `...${100}...` + // these are the only tokens can legally follow a type argument + // list. So we definitely want to treat them as type arg lists. + // falls through + case 24 /* DotToken */: // foo. + case 21 /* CloseParenToken */: // foo) + case 23 /* CloseBracketToken */: // foo] + case 58 /* ColonToken */: // foo: + case 26 /* SemicolonToken */: // foo; + case 57 /* QuestionToken */: // foo? + case 34 /* EqualsEqualsToken */: // foo == + case 36 /* EqualsEqualsEqualsToken */: // foo === + case 35 /* ExclamationEqualsToken */: // foo != + case 37 /* ExclamationEqualsEqualsToken */: // foo !== + case 55 /* AmpersandAmpersandToken */: // foo && + case 56 /* BarBarToken */: // foo || + case 60 /* QuestionQuestionToken */: // foo ?? + case 52 /* CaretToken */: // foo ^ + case 50 /* AmpersandToken */: // foo & + case 51 /* BarToken */: // foo | + case 19 /* CloseBraceToken */: // foo } + case 1 /* EndOfFileToken */: // foo + // these cases can't legally follow a type arg list. However, they're not legal + // expressions either. The user is probably in the middle of a generic type. So + // treat it as such. + return true; + case 27 /* CommaToken */: // foo, + case 18 /* OpenBraceToken */: // foo { + // We don't want to treat these as type arguments. Otherwise we'll parse this + // as an invocation expression. Instead, we want to parse out the expression + // in isolation from the type arguments. + // falls through + default: + // Anything else treat as an expression. + return false; + } + } + function parsePrimaryExpression() { + switch (token()) { + case 8 /* NumericLiteral */: + case 9 /* BigIntLiteral */: + case 10 /* StringLiteral */: + case 14 /* NoSubstitutionTemplateLiteral */: + return parseLiteralNode(); + case 104 /* ThisKeyword */: + case 102 /* SuperKeyword */: + case 100 /* NullKeyword */: + case 106 /* TrueKeyword */: + case 91 /* FalseKeyword */: + return parseTokenNode(); + case 20 /* OpenParenToken */: + return parseParenthesizedExpression(); + case 22 /* OpenBracketToken */: + return parseArrayLiteralExpression(); + case 18 /* OpenBraceToken */: + return parseObjectLiteralExpression(); + case 126 /* AsyncKeyword */: + // Async arrow functions are parsed earlier in parseAssignmentExpressionOrHigher. + // If we encounter `async [no LineTerminator here] function` then this is an async + // function; otherwise, its an identifier. + if (!lookAhead(nextTokenIsFunctionKeywordOnSameLine)) { + break; + } + return parseFunctionExpression(); + case 80 /* ClassKeyword */: + return parseClassExpression(); + case 94 /* FunctionKeyword */: + return parseFunctionExpression(); + case 99 /* NewKeyword */: + return parseNewExpressionOrNewDotTarget(); + case 43 /* SlashToken */: + case 67 /* SlashEqualsToken */: + if (reScanSlashToken() === 13 /* RegularExpressionLiteral */) { + return parseLiteralNode(); + } + break; + case 15 /* TemplateHead */: + return parseTemplateExpression(/* isTaggedTemplate */ false); + } + return parseIdentifier(ts.Diagnostics.Expression_expected); + } + function parseParenthesizedExpression() { + var node = createNodeWithJSDoc(200 /* ParenthesizedExpression */); + parseExpected(20 /* OpenParenToken */); + node.expression = allowInAnd(parseExpression); + parseExpected(21 /* CloseParenToken */); + return finishNode(node); + } + function parseSpreadElement() { + var node = createNode(213 /* SpreadElement */); + parseExpected(25 /* DotDotDotToken */); + node.expression = parseAssignmentExpressionOrHigher(); + return finishNode(node); + } + function parseArgumentOrArrayLiteralElement() { + return token() === 25 /* DotDotDotToken */ ? parseSpreadElement() : + token() === 27 /* CommaToken */ ? createNode(215 /* OmittedExpression */) : + parseAssignmentExpressionOrHigher(); + } + function parseArgumentExpression() { + return doOutsideOfContext(disallowInAndDecoratorContext, parseArgumentOrArrayLiteralElement); + } + function parseArrayLiteralExpression() { + var node = createNode(192 /* ArrayLiteralExpression */); + parseExpected(22 /* OpenBracketToken */); + if (scanner.hasPrecedingLineBreak()) { + node.multiLine = true; + } + node.elements = parseDelimitedList(15 /* ArrayLiteralMembers */, parseArgumentOrArrayLiteralElement); + parseExpected(23 /* CloseBracketToken */); + return finishNode(node); + } + function parseObjectLiteralElement() { + var node = createNodeWithJSDoc(0 /* Unknown */); + if (parseOptionalToken(25 /* DotDotDotToken */)) { + node.kind = 283 /* SpreadAssignment */; + node.expression = parseAssignmentExpressionOrHigher(); + return finishNode(node); + } + node.decorators = parseDecorators(); + node.modifiers = parseModifiers(); + if (parseContextualModifier(131 /* GetKeyword */)) { + return parseAccessorDeclaration(node, 163 /* GetAccessor */); + } + if (parseContextualModifier(142 /* SetKeyword */)) { + return parseAccessorDeclaration(node, 164 /* SetAccessor */); + } + var asteriskToken = parseOptionalToken(41 /* AsteriskToken */); + var tokenIsIdentifier = isIdentifier(); + node.name = parsePropertyName(); + // Disallowing of optional property assignments and definite assignment assertion happens in the grammar checker. + node.questionToken = parseOptionalToken(57 /* QuestionToken */); + node.exclamationToken = parseOptionalToken(53 /* ExclamationToken */); + if (asteriskToken || token() === 20 /* OpenParenToken */ || token() === 29 /* LessThanToken */) { + return parseMethodDeclaration(node, asteriskToken); + } + // check if it is short-hand property assignment or normal property assignment + // NOTE: if token is EqualsToken it is interpreted as CoverInitializedName production + // CoverInitializedName[Yield] : + // IdentifierReference[?Yield] Initializer[In, ?Yield] + // this is necessary because ObjectLiteral productions are also used to cover grammar for ObjectAssignmentPattern + var isShorthandPropertyAssignment = tokenIsIdentifier && (token() !== 58 /* ColonToken */); + if (isShorthandPropertyAssignment) { + node.kind = 282 /* ShorthandPropertyAssignment */; + var equalsToken = parseOptionalToken(62 /* EqualsToken */); + if (equalsToken) { + node.equalsToken = equalsToken; + node.objectAssignmentInitializer = allowInAnd(parseAssignmentExpressionOrHigher); + } + } + else { + node.kind = 281 /* PropertyAssignment */; + parseExpected(58 /* ColonToken */); + node.initializer = allowInAnd(parseAssignmentExpressionOrHigher); + } + return finishNode(node); + } + function parseObjectLiteralExpression() { + var node = createNode(193 /* ObjectLiteralExpression */); + var openBracePosition = scanner.getTokenPos(); + parseExpected(18 /* OpenBraceToken */); + if (scanner.hasPrecedingLineBreak()) { + node.multiLine = true; + } + node.properties = parseDelimitedList(12 /* ObjectLiteralMembers */, parseObjectLiteralElement, /*considerSemicolonAsDelimiter*/ true); + if (!parseExpected(19 /* CloseBraceToken */)) { + var lastError = ts.lastOrUndefined(parseDiagnostics); + if (lastError && lastError.code === ts.Diagnostics._0_expected.code) { + ts.addRelatedInfo(lastError, ts.createFileDiagnostic(sourceFile, openBracePosition, 1, ts.Diagnostics.The_parser_expected_to_find_a_to_match_the_token_here)); + } + } + return finishNode(node); + } + function parseFunctionExpression() { + // GeneratorExpression: + // function* BindingIdentifier [Yield][opt](FormalParameters[Yield]){ GeneratorBody } + // + // FunctionExpression: + // function BindingIdentifier[opt](FormalParameters){ FunctionBody } + var saveDecoratorContext = inDecoratorContext(); + if (saveDecoratorContext) { + setDecoratorContext(/*val*/ false); + } + var node = createNodeWithJSDoc(201 /* FunctionExpression */); + node.modifiers = parseModifiers(); + parseExpected(94 /* FunctionKeyword */); + node.asteriskToken = parseOptionalToken(41 /* AsteriskToken */); + var isGenerator = node.asteriskToken ? 1 /* Yield */ : 0 /* None */; + var isAsync = hasModifierOfKind(node, 126 /* AsyncKeyword */) ? 2 /* Await */ : 0 /* None */; + node.name = + isGenerator && isAsync ? doInYieldAndAwaitContext(parseOptionalIdentifier) : + isGenerator ? doInYieldContext(parseOptionalIdentifier) : + isAsync ? doInAwaitContext(parseOptionalIdentifier) : + parseOptionalIdentifier(); + fillSignature(58 /* ColonToken */, isGenerator | isAsync, node); + node.body = parseFunctionBlock(isGenerator | isAsync); + if (saveDecoratorContext) { + setDecoratorContext(/*val*/ true); + } + return finishNode(node); + } + function parseOptionalIdentifier() { + return isIdentifier() ? parseIdentifier() : undefined; + } + function parseNewExpressionOrNewDotTarget() { + var fullStart = scanner.getStartPos(); + parseExpected(99 /* NewKeyword */); + if (parseOptional(24 /* DotToken */)) { + var node_2 = createNode(219 /* MetaProperty */, fullStart); + node_2.keywordToken = 99 /* NewKeyword */; + node_2.name = parseIdentifierName(); + return finishNode(node_2); + } + var expression = parsePrimaryExpression(); + var typeArguments; + while (true) { + expression = parseMemberExpressionRest(expression, /*allowOptionalChain*/ false); + typeArguments = tryParse(parseTypeArgumentsInExpression); + if (isTemplateStartOfTaggedTemplate()) { + ts.Debug.assert(!!typeArguments, "Expected a type argument list; all plain tagged template starts should be consumed in 'parseMemberExpressionRest'"); + expression = parseTaggedTemplateRest(expression, /*optionalChain*/ undefined, typeArguments); + typeArguments = undefined; + } + break; + } + var node = createNode(197 /* NewExpression */, fullStart); + node.expression = expression; + node.typeArguments = typeArguments; + if (token() === 20 /* OpenParenToken */) { + node.arguments = parseArgumentList(); + } + else if (node.typeArguments) { + parseErrorAt(fullStart, scanner.getStartPos(), ts.Diagnostics.A_new_expression_with_type_arguments_must_always_be_followed_by_a_parenthesized_argument_list); + } + return finishNode(node); + } + // STATEMENTS + function parseBlock(ignoreMissingOpenBrace, diagnosticMessage) { + var node = createNode(223 /* Block */); + var openBracePosition = scanner.getTokenPos(); + if (parseExpected(18 /* OpenBraceToken */, diagnosticMessage) || ignoreMissingOpenBrace) { + if (scanner.hasPrecedingLineBreak()) { + node.multiLine = true; + } + node.statements = parseList(1 /* BlockStatements */, parseStatement); + if (!parseExpected(19 /* CloseBraceToken */)) { + var lastError = ts.lastOrUndefined(parseDiagnostics); + if (lastError && lastError.code === ts.Diagnostics._0_expected.code) { + ts.addRelatedInfo(lastError, ts.createFileDiagnostic(sourceFile, openBracePosition, 1, ts.Diagnostics.The_parser_expected_to_find_a_to_match_the_token_here)); + } + } + } + else { + node.statements = createMissingList(); + } + return finishNode(node); + } + function parseFunctionBlock(flags, diagnosticMessage) { + var savedYieldContext = inYieldContext(); + setYieldContext(!!(flags & 1 /* Yield */)); + var savedAwaitContext = inAwaitContext(); + setAwaitContext(!!(flags & 2 /* Await */)); + // We may be in a [Decorator] context when parsing a function expression or + // arrow function. The body of the function is not in [Decorator] context. + var saveDecoratorContext = inDecoratorContext(); + if (saveDecoratorContext) { + setDecoratorContext(/*val*/ false); + } + var block = parseBlock(!!(flags & 16 /* IgnoreMissingOpenBrace */), diagnosticMessage); + if (saveDecoratorContext) { + setDecoratorContext(/*val*/ true); + } + setYieldContext(savedYieldContext); + setAwaitContext(savedAwaitContext); + return block; + } + function parseEmptyStatement() { + var node = createNode(224 /* EmptyStatement */); + parseExpected(26 /* SemicolonToken */); + return finishNode(node); + } + function parseIfStatement() { + var node = createNode(227 /* IfStatement */); + parseExpected(95 /* IfKeyword */); + parseExpected(20 /* OpenParenToken */); + node.expression = allowInAnd(parseExpression); + parseExpected(21 /* CloseParenToken */); + node.thenStatement = parseStatement(); + node.elseStatement = parseOptional(87 /* ElseKeyword */) ? parseStatement() : undefined; + return finishNode(node); + } + function parseDoStatement() { + var node = createNode(228 /* DoStatement */); + parseExpected(86 /* DoKeyword */); + node.statement = parseStatement(); + parseExpected(111 /* WhileKeyword */); + parseExpected(20 /* OpenParenToken */); + node.expression = allowInAnd(parseExpression); + parseExpected(21 /* CloseParenToken */); + // From: https://mail.mozilla.org/pipermail/es-discuss/2011-August/016188.html + // 157 min --- All allen at wirfs-brock.com CONF --- "do{;}while(false)false" prohibited in + // spec but allowed in consensus reality. Approved -- this is the de-facto standard whereby + // do;while(0)x will have a semicolon inserted before x. + parseOptional(26 /* SemicolonToken */); + return finishNode(node); + } + function parseWhileStatement() { + var node = createNode(229 /* WhileStatement */); + parseExpected(111 /* WhileKeyword */); + parseExpected(20 /* OpenParenToken */); + node.expression = allowInAnd(parseExpression); + parseExpected(21 /* CloseParenToken */); + node.statement = parseStatement(); + return finishNode(node); + } + function parseForOrForInOrForOfStatement() { + var pos = getNodePos(); + parseExpected(93 /* ForKeyword */); + var awaitToken = parseOptionalToken(127 /* AwaitKeyword */); + parseExpected(20 /* OpenParenToken */); + var initializer; + if (token() !== 26 /* SemicolonToken */) { + if (token() === 109 /* VarKeyword */ || token() === 115 /* LetKeyword */ || token() === 81 /* ConstKeyword */) { + initializer = parseVariableDeclarationList(/*inForStatementInitializer*/ true); + } + else { + initializer = disallowInAnd(parseExpression); + } + } + var forOrForInOrForOfStatement; + if (awaitToken ? parseExpected(152 /* OfKeyword */) : parseOptional(152 /* OfKeyword */)) { + var forOfStatement = createNode(232 /* ForOfStatement */, pos); + forOfStatement.awaitModifier = awaitToken; + forOfStatement.initializer = initializer; + forOfStatement.expression = allowInAnd(parseAssignmentExpressionOrHigher); + parseExpected(21 /* CloseParenToken */); + forOrForInOrForOfStatement = forOfStatement; + } + else if (parseOptional(97 /* InKeyword */)) { + var forInStatement = createNode(231 /* ForInStatement */, pos); + forInStatement.initializer = initializer; + forInStatement.expression = allowInAnd(parseExpression); + parseExpected(21 /* CloseParenToken */); + forOrForInOrForOfStatement = forInStatement; + } + else { + var forStatement = createNode(230 /* ForStatement */, pos); + forStatement.initializer = initializer; + parseExpected(26 /* SemicolonToken */); + if (token() !== 26 /* SemicolonToken */ && token() !== 21 /* CloseParenToken */) { + forStatement.condition = allowInAnd(parseExpression); + } + parseExpected(26 /* SemicolonToken */); + if (token() !== 21 /* CloseParenToken */) { + forStatement.incrementor = allowInAnd(parseExpression); + } + parseExpected(21 /* CloseParenToken */); + forOrForInOrForOfStatement = forStatement; + } + forOrForInOrForOfStatement.statement = parseStatement(); + return finishNode(forOrForInOrForOfStatement); + } + function parseBreakOrContinueStatement(kind) { + var node = createNode(kind); + parseExpected(kind === 234 /* BreakStatement */ ? 77 /* BreakKeyword */ : 82 /* ContinueKeyword */); + if (!canParseSemicolon()) { + node.label = parseIdentifier(); + } + parseSemicolon(); + return finishNode(node); + } + function parseReturnStatement() { + var node = createNode(235 /* ReturnStatement */); + parseExpected(101 /* ReturnKeyword */); + if (!canParseSemicolon()) { + node.expression = allowInAnd(parseExpression); + } + parseSemicolon(); + return finishNode(node); + } + function parseWithStatement() { + var node = createNode(236 /* WithStatement */); + parseExpected(112 /* WithKeyword */); + parseExpected(20 /* OpenParenToken */); + node.expression = allowInAnd(parseExpression); + parseExpected(21 /* CloseParenToken */); + node.statement = doInsideOfContext(16777216 /* InWithStatement */, parseStatement); + return finishNode(node); + } + function parseCaseClause() { + var node = createNode(277 /* CaseClause */); + parseExpected(78 /* CaseKeyword */); + node.expression = allowInAnd(parseExpression); + parseExpected(58 /* ColonToken */); + node.statements = parseList(3 /* SwitchClauseStatements */, parseStatement); + return finishNode(node); + } + function parseDefaultClause() { + var node = createNode(278 /* DefaultClause */); + parseExpected(84 /* DefaultKeyword */); + parseExpected(58 /* ColonToken */); + node.statements = parseList(3 /* SwitchClauseStatements */, parseStatement); + return finishNode(node); + } + function parseCaseOrDefaultClause() { + return token() === 78 /* CaseKeyword */ ? parseCaseClause() : parseDefaultClause(); + } + function parseSwitchStatement() { + var node = createNode(237 /* SwitchStatement */); + parseExpected(103 /* SwitchKeyword */); + parseExpected(20 /* OpenParenToken */); + node.expression = allowInAnd(parseExpression); + parseExpected(21 /* CloseParenToken */); + var caseBlock = createNode(251 /* CaseBlock */); + parseExpected(18 /* OpenBraceToken */); + caseBlock.clauses = parseList(2 /* SwitchClauses */, parseCaseOrDefaultClause); + parseExpected(19 /* CloseBraceToken */); + node.caseBlock = finishNode(caseBlock); + return finishNode(node); + } + function parseThrowStatement() { + // ThrowStatement[Yield] : + // throw [no LineTerminator here]Expression[In, ?Yield]; + // Because of automatic semicolon insertion, we need to report error if this + // throw could be terminated with a semicolon. Note: we can't call 'parseExpression' + // directly as that might consume an expression on the following line. + // We just return 'undefined' in that case. The actual error will be reported in the + // grammar walker. + var node = createNode(239 /* ThrowStatement */); + parseExpected(105 /* ThrowKeyword */); + node.expression = scanner.hasPrecedingLineBreak() ? undefined : allowInAnd(parseExpression); + parseSemicolon(); + return finishNode(node); + } + // TODO: Review for error recovery + function parseTryStatement() { + var node = createNode(240 /* TryStatement */); + parseExpected(107 /* TryKeyword */); + node.tryBlock = parseBlock(/*ignoreMissingOpenBrace*/ false); + node.catchClause = token() === 79 /* CatchKeyword */ ? parseCatchClause() : undefined; + // If we don't have a catch clause, then we must have a finally clause. Try to parse + // one out no matter what. + if (!node.catchClause || token() === 92 /* FinallyKeyword */) { + parseExpected(92 /* FinallyKeyword */); + node.finallyBlock = parseBlock(/*ignoreMissingOpenBrace*/ false); + } + return finishNode(node); + } + function parseCatchClause() { + var result = createNode(280 /* CatchClause */); + parseExpected(79 /* CatchKeyword */); + if (parseOptional(20 /* OpenParenToken */)) { + result.variableDeclaration = parseVariableDeclaration(); + parseExpected(21 /* CloseParenToken */); + } + else { + // Keep shape of node to avoid degrading performance. + result.variableDeclaration = undefined; + } + result.block = parseBlock(/*ignoreMissingOpenBrace*/ false); + return finishNode(result); + } + function parseDebuggerStatement() { + var node = createNode(241 /* DebuggerStatement */); + parseExpected(83 /* DebuggerKeyword */); + parseSemicolon(); + return finishNode(node); + } + function parseExpressionOrLabeledStatement() { + // Avoiding having to do the lookahead for a labeled statement by just trying to parse + // out an expression, seeing if it is identifier and then seeing if it is followed by + // a colon. + var node = createNodeWithJSDoc(token() === 75 /* Identifier */ ? 0 /* Unknown */ : 226 /* ExpressionStatement */); + var expression = allowInAnd(parseExpression); + if (expression.kind === 75 /* Identifier */ && parseOptional(58 /* ColonToken */)) { + node.kind = 238 /* LabeledStatement */; + node.label = expression; + node.statement = parseStatement(); + } + else { + node.kind = 226 /* ExpressionStatement */; + node.expression = expression; + parseSemicolon(); + } + return finishNode(node); + } + function nextTokenIsIdentifierOrKeywordOnSameLine() { + nextToken(); + return ts.tokenIsIdentifierOrKeyword(token()) && !scanner.hasPrecedingLineBreak(); + } + function nextTokenIsClassKeywordOnSameLine() { + nextToken(); + return token() === 80 /* ClassKeyword */ && !scanner.hasPrecedingLineBreak(); + } + function nextTokenIsFunctionKeywordOnSameLine() { + nextToken(); + return token() === 94 /* FunctionKeyword */ && !scanner.hasPrecedingLineBreak(); + } + function nextTokenIsIdentifierOrKeywordOrLiteralOnSameLine() { + nextToken(); + return (ts.tokenIsIdentifierOrKeyword(token()) || token() === 8 /* NumericLiteral */ || token() === 9 /* BigIntLiteral */ || token() === 10 /* StringLiteral */) && !scanner.hasPrecedingLineBreak(); + } + function isDeclaration() { + while (true) { + switch (token()) { + case 109 /* VarKeyword */: + case 115 /* LetKeyword */: + case 81 /* ConstKeyword */: + case 94 /* FunctionKeyword */: + case 80 /* ClassKeyword */: + case 88 /* EnumKeyword */: + return true; + // 'declare', 'module', 'namespace', 'interface'* and 'type' are all legal JavaScript identifiers; + // however, an identifier cannot be followed by another identifier on the same line. This is what we + // count on to parse out the respective declarations. For instance, we exploit this to say that + // + // namespace n + // + // can be none other than the beginning of a namespace declaration, but need to respect that JavaScript sees + // + // namespace + // n + // + // as the identifier 'namespace' on one line followed by the identifier 'n' on another. + // We need to look one token ahead to see if it permissible to try parsing a declaration. + // + // *Note*: 'interface' is actually a strict mode reserved word. So while + // + // "use strict" + // interface + // I {} + // + // could be legal, it would add complexity for very little gain. + case 114 /* InterfaceKeyword */: + case 145 /* TypeKeyword */: + return nextTokenIsIdentifierOnSameLine(); + case 135 /* ModuleKeyword */: + case 136 /* NamespaceKeyword */: + return nextTokenIsIdentifierOrStringLiteralOnSameLine(); + case 122 /* AbstractKeyword */: + case 126 /* AsyncKeyword */: + case 130 /* DeclareKeyword */: + case 117 /* PrivateKeyword */: + case 118 /* ProtectedKeyword */: + case 119 /* PublicKeyword */: + case 138 /* ReadonlyKeyword */: + nextToken(); + // ASI takes effect for this modifier. + if (scanner.hasPrecedingLineBreak()) { + return false; + } + continue; + case 150 /* GlobalKeyword */: + nextToken(); + return token() === 18 /* OpenBraceToken */ || token() === 75 /* Identifier */ || token() === 89 /* ExportKeyword */; + case 96 /* ImportKeyword */: + nextToken(); + return token() === 10 /* StringLiteral */ || token() === 41 /* AsteriskToken */ || + token() === 18 /* OpenBraceToken */ || ts.tokenIsIdentifierOrKeyword(token()); + case 89 /* ExportKeyword */: + var currentToken_1 = nextToken(); + if (currentToken_1 === 145 /* TypeKeyword */) { + currentToken_1 = lookAhead(nextToken); + } + if (currentToken_1 === 62 /* EqualsToken */ || currentToken_1 === 41 /* AsteriskToken */ || + currentToken_1 === 18 /* OpenBraceToken */ || currentToken_1 === 84 /* DefaultKeyword */ || + currentToken_1 === 123 /* AsKeyword */) { + return true; + } + continue; + case 120 /* StaticKeyword */: + nextToken(); + continue; + default: + return false; + } + } + } + function isStartOfDeclaration() { + return lookAhead(isDeclaration); + } + function isStartOfStatement() { + switch (token()) { + case 59 /* AtToken */: + case 26 /* SemicolonToken */: + case 18 /* OpenBraceToken */: + case 109 /* VarKeyword */: + case 115 /* LetKeyword */: + case 94 /* FunctionKeyword */: + case 80 /* ClassKeyword */: + case 88 /* EnumKeyword */: + case 95 /* IfKeyword */: + case 86 /* DoKeyword */: + case 111 /* WhileKeyword */: + case 93 /* ForKeyword */: + case 82 /* ContinueKeyword */: + case 77 /* BreakKeyword */: + case 101 /* ReturnKeyword */: + case 112 /* WithKeyword */: + case 103 /* SwitchKeyword */: + case 105 /* ThrowKeyword */: + case 107 /* TryKeyword */: + case 83 /* DebuggerKeyword */: + // 'catch' and 'finally' do not actually indicate that the code is part of a statement, + // however, we say they are here so that we may gracefully parse them and error later. + // falls through + case 79 /* CatchKeyword */: + case 92 /* FinallyKeyword */: + return true; + case 96 /* ImportKeyword */: + return isStartOfDeclaration() || lookAhead(nextTokenIsOpenParenOrLessThanOrDot); + case 81 /* ConstKeyword */: + case 89 /* ExportKeyword */: + return isStartOfDeclaration(); + case 126 /* AsyncKeyword */: + case 130 /* DeclareKeyword */: + case 114 /* InterfaceKeyword */: + case 135 /* ModuleKeyword */: + case 136 /* NamespaceKeyword */: + case 145 /* TypeKeyword */: + case 150 /* GlobalKeyword */: + // When these don't start a declaration, they're an identifier in an expression statement + return true; + case 119 /* PublicKeyword */: + case 117 /* PrivateKeyword */: + case 118 /* ProtectedKeyword */: + case 120 /* StaticKeyword */: + case 138 /* ReadonlyKeyword */: + // When these don't start a declaration, they may be the start of a class member if an identifier + // immediately follows. Otherwise they're an identifier in an expression statement. + return isStartOfDeclaration() || !lookAhead(nextTokenIsIdentifierOrKeywordOnSameLine); + default: + return isStartOfExpression(); + } + } + function nextTokenIsIdentifierOrStartOfDestructuring() { + nextToken(); + return isIdentifier() || token() === 18 /* OpenBraceToken */ || token() === 22 /* OpenBracketToken */; + } + function isLetDeclaration() { + // In ES6 'let' always starts a lexical declaration if followed by an identifier or { + // or [. + return lookAhead(nextTokenIsIdentifierOrStartOfDestructuring); + } + function parseStatement() { + switch (token()) { + case 26 /* SemicolonToken */: + return parseEmptyStatement(); + case 18 /* OpenBraceToken */: + return parseBlock(/*ignoreMissingOpenBrace*/ false); + case 109 /* VarKeyword */: + return parseVariableStatement(createNodeWithJSDoc(242 /* VariableDeclaration */)); + case 115 /* LetKeyword */: + if (isLetDeclaration()) { + return parseVariableStatement(createNodeWithJSDoc(242 /* VariableDeclaration */)); + } + break; + case 94 /* FunctionKeyword */: + return parseFunctionDeclaration(createNodeWithJSDoc(244 /* FunctionDeclaration */)); + case 80 /* ClassKeyword */: + return parseClassDeclaration(createNodeWithJSDoc(245 /* ClassDeclaration */)); + case 95 /* IfKeyword */: + return parseIfStatement(); + case 86 /* DoKeyword */: + return parseDoStatement(); + case 111 /* WhileKeyword */: + return parseWhileStatement(); + case 93 /* ForKeyword */: + return parseForOrForInOrForOfStatement(); + case 82 /* ContinueKeyword */: + return parseBreakOrContinueStatement(233 /* ContinueStatement */); + case 77 /* BreakKeyword */: + return parseBreakOrContinueStatement(234 /* BreakStatement */); + case 101 /* ReturnKeyword */: + return parseReturnStatement(); + case 112 /* WithKeyword */: + return parseWithStatement(); + case 103 /* SwitchKeyword */: + return parseSwitchStatement(); + case 105 /* ThrowKeyword */: + return parseThrowStatement(); + case 107 /* TryKeyword */: + // Include 'catch' and 'finally' for error recovery. + // falls through + case 79 /* CatchKeyword */: + case 92 /* FinallyKeyword */: + return parseTryStatement(); + case 83 /* DebuggerKeyword */: + return parseDebuggerStatement(); + case 59 /* AtToken */: + return parseDeclaration(); + case 126 /* AsyncKeyword */: + case 114 /* InterfaceKeyword */: + case 145 /* TypeKeyword */: + case 135 /* ModuleKeyword */: + case 136 /* NamespaceKeyword */: + case 130 /* DeclareKeyword */: + case 81 /* ConstKeyword */: + case 88 /* EnumKeyword */: + case 89 /* ExportKeyword */: + case 96 /* ImportKeyword */: + case 117 /* PrivateKeyword */: + case 118 /* ProtectedKeyword */: + case 119 /* PublicKeyword */: + case 122 /* AbstractKeyword */: + case 120 /* StaticKeyword */: + case 138 /* ReadonlyKeyword */: + case 150 /* GlobalKeyword */: + if (isStartOfDeclaration()) { + return parseDeclaration(); + } + break; + } + return parseExpressionOrLabeledStatement(); + } + function isDeclareModifier(modifier) { + return modifier.kind === 130 /* DeclareKeyword */; + } + function parseDeclaration() { + var modifiers = lookAhead(function () { return (parseDecorators(), parseModifiers()); }); + // `parseListElement` attempted to get the reused node at this position, + // but the ambient context flag was not yet set, so the node appeared + // not reusable in that context. + var isAmbient = ts.some(modifiers, isDeclareModifier); + if (isAmbient) { + var node_3 = tryReuseAmbientDeclaration(); + if (node_3) { + return node_3; + } + } + var node = createNodeWithJSDoc(0 /* Unknown */); + node.decorators = parseDecorators(); + node.modifiers = parseModifiers(); + if (isAmbient) { + for (var _i = 0, _a = node.modifiers; _i < _a.length; _i++) { + var m = _a[_i]; + m.flags |= 8388608 /* Ambient */; + } + return doInsideOfContext(8388608 /* Ambient */, function () { return parseDeclarationWorker(node); }); + } + else { + return parseDeclarationWorker(node); + } + } + function tryReuseAmbientDeclaration() { + return doInsideOfContext(8388608 /* Ambient */, function () { + var node = currentNode(parsingContext); + if (node) { + return consumeNode(node); + } + }); + } + function parseDeclarationWorker(node) { + switch (token()) { + case 109 /* VarKeyword */: + case 115 /* LetKeyword */: + case 81 /* ConstKeyword */: + return parseVariableStatement(node); + case 94 /* FunctionKeyword */: + return parseFunctionDeclaration(node); + case 80 /* ClassKeyword */: + return parseClassDeclaration(node); + case 114 /* InterfaceKeyword */: + return parseInterfaceDeclaration(node); + case 145 /* TypeKeyword */: + return parseTypeAliasDeclaration(node); + case 88 /* EnumKeyword */: + return parseEnumDeclaration(node); + case 150 /* GlobalKeyword */: + case 135 /* ModuleKeyword */: + case 136 /* NamespaceKeyword */: + return parseModuleDeclaration(node); + case 96 /* ImportKeyword */: + return parseImportDeclarationOrImportEqualsDeclaration(node); + case 89 /* ExportKeyword */: + nextToken(); + switch (token()) { + case 84 /* DefaultKeyword */: + case 62 /* EqualsToken */: + return parseExportAssignment(node); + case 123 /* AsKeyword */: + return parseNamespaceExportDeclaration(node); + default: + return parseExportDeclaration(node); + } + default: + if (node.decorators || node.modifiers) { + // We reached this point because we encountered decorators and/or modifiers and assumed a declaration + // would follow. For recovery and error reporting purposes, return an incomplete declaration. + var missing = createMissingNode(264 /* MissingDeclaration */, /*reportAtCurrentPosition*/ true, ts.Diagnostics.Declaration_expected); + missing.pos = node.pos; + missing.decorators = node.decorators; + missing.modifiers = node.modifiers; + return finishNode(missing); + } + return undefined; // TODO: GH#18217 + } + } + function nextTokenIsIdentifierOrStringLiteralOnSameLine() { + nextToken(); + return !scanner.hasPrecedingLineBreak() && (isIdentifier() || token() === 10 /* StringLiteral */); + } + function parseFunctionBlockOrSemicolon(flags, diagnosticMessage) { + if (token() !== 18 /* OpenBraceToken */ && canParseSemicolon()) { + parseSemicolon(); + return; + } + return parseFunctionBlock(flags, diagnosticMessage); + } + // DECLARATIONS + function parseArrayBindingElement() { + if (token() === 27 /* CommaToken */) { + return createNode(215 /* OmittedExpression */); + } + var node = createNode(191 /* BindingElement */); + node.dotDotDotToken = parseOptionalToken(25 /* DotDotDotToken */); + node.name = parseIdentifierOrPattern(); + node.initializer = parseInitializer(); + return finishNode(node); + } + function parseObjectBindingElement() { + var node = createNode(191 /* BindingElement */); + node.dotDotDotToken = parseOptionalToken(25 /* DotDotDotToken */); + var tokenIsIdentifier = isIdentifier(); + var propertyName = parsePropertyName(); + if (tokenIsIdentifier && token() !== 58 /* ColonToken */) { + node.name = propertyName; + } + else { + parseExpected(58 /* ColonToken */); + node.propertyName = propertyName; + node.name = parseIdentifierOrPattern(); + } + node.initializer = parseInitializer(); + return finishNode(node); + } + function parseObjectBindingPattern() { + var node = createNode(189 /* ObjectBindingPattern */); + parseExpected(18 /* OpenBraceToken */); + node.elements = parseDelimitedList(9 /* ObjectBindingElements */, parseObjectBindingElement); + parseExpected(19 /* CloseBraceToken */); + return finishNode(node); + } + function parseArrayBindingPattern() { + var node = createNode(190 /* ArrayBindingPattern */); + parseExpected(22 /* OpenBracketToken */); + node.elements = parseDelimitedList(10 /* ArrayBindingElements */, parseArrayBindingElement); + parseExpected(23 /* CloseBracketToken */); + return finishNode(node); + } + function isIdentifierOrPrivateIdentifierOrPattern() { + return token() === 18 /* OpenBraceToken */ + || token() === 22 /* OpenBracketToken */ + || token() === 76 /* PrivateIdentifier */ + || isIdentifier(); + } + function parseIdentifierOrPattern(privateIdentifierDiagnosticMessage) { + if (token() === 22 /* OpenBracketToken */) { + return parseArrayBindingPattern(); + } + if (token() === 18 /* OpenBraceToken */) { + return parseObjectBindingPattern(); + } + return parseIdentifier(/*diagnosticMessage*/ undefined, privateIdentifierDiagnosticMessage); + } + function parseVariableDeclarationAllowExclamation() { + return parseVariableDeclaration(/*allowExclamation*/ true); + } + function parseVariableDeclaration(allowExclamation) { + var node = createNode(242 /* VariableDeclaration */); + node.name = parseIdentifierOrPattern(ts.Diagnostics.Private_identifiers_are_not_allowed_in_variable_declarations); + if (allowExclamation && node.name.kind === 75 /* Identifier */ && + token() === 53 /* ExclamationToken */ && !scanner.hasPrecedingLineBreak()) { + node.exclamationToken = parseTokenNode(); + } + node.type = parseTypeAnnotation(); + if (!isInOrOfKeyword(token())) { + node.initializer = parseInitializer(); + } + return finishNode(node); + } + function parseVariableDeclarationList(inForStatementInitializer) { + var node = createNode(243 /* VariableDeclarationList */); + switch (token()) { + case 109 /* VarKeyword */: + break; + case 115 /* LetKeyword */: + node.flags |= 1 /* Let */; + break; + case 81 /* ConstKeyword */: + node.flags |= 2 /* Const */; + break; + default: + ts.Debug.fail(); + } + nextToken(); + // The user may have written the following: + // + // for (let of X) { } + // + // In this case, we want to parse an empty declaration list, and then parse 'of' + // as a keyword. The reason this is not automatic is that 'of' is a valid identifier. + // So we need to look ahead to determine if 'of' should be treated as a keyword in + // this context. + // The checker will then give an error that there is an empty declaration list. + if (token() === 152 /* OfKeyword */ && lookAhead(canFollowContextualOfKeyword)) { + node.declarations = createMissingList(); + } + else { + var savedDisallowIn = inDisallowInContext(); + setDisallowInContext(inForStatementInitializer); + node.declarations = parseDelimitedList(8 /* VariableDeclarations */, inForStatementInitializer ? parseVariableDeclaration : parseVariableDeclarationAllowExclamation); + setDisallowInContext(savedDisallowIn); + } + return finishNode(node); + } + function canFollowContextualOfKeyword() { + return nextTokenIsIdentifier() && nextToken() === 21 /* CloseParenToken */; + } + function parseVariableStatement(node) { + node.kind = 225 /* VariableStatement */; + node.declarationList = parseVariableDeclarationList(/*inForStatementInitializer*/ false); + parseSemicolon(); + return finishNode(node); + } + function parseFunctionDeclaration(node) { + node.kind = 244 /* FunctionDeclaration */; + parseExpected(94 /* FunctionKeyword */); + node.asteriskToken = parseOptionalToken(41 /* AsteriskToken */); + node.name = hasModifierOfKind(node, 84 /* DefaultKeyword */) ? parseOptionalIdentifier() : parseIdentifier(); + var isGenerator = node.asteriskToken ? 1 /* Yield */ : 0 /* None */; + var isAsync = hasModifierOfKind(node, 126 /* AsyncKeyword */) ? 2 /* Await */ : 0 /* None */; + fillSignature(58 /* ColonToken */, isGenerator | isAsync, node); + node.body = parseFunctionBlockOrSemicolon(isGenerator | isAsync, ts.Diagnostics.or_expected); + return finishNode(node); + } + function parseConstructorName() { + if (token() === 129 /* ConstructorKeyword */) { + return parseExpected(129 /* ConstructorKeyword */); + } + if (token() === 10 /* StringLiteral */ && lookAhead(nextToken) === 20 /* OpenParenToken */) { + return tryParse(function () { + var literalNode = parseLiteralNode(); + return literalNode.text === "constructor" ? literalNode : undefined; + }); + } + } + function tryParseConstructorDeclaration(node) { + return tryParse(function () { + if (parseConstructorName()) { + node.kind = 162 /* Constructor */; + fillSignature(58 /* ColonToken */, 0 /* None */, node); + node.body = parseFunctionBlockOrSemicolon(0 /* None */, ts.Diagnostics.or_expected); + return finishNode(node); + } + }); + } + function parseMethodDeclaration(node, asteriskToken, diagnosticMessage) { + node.kind = 161 /* MethodDeclaration */; + node.asteriskToken = asteriskToken; + var isGenerator = asteriskToken ? 1 /* Yield */ : 0 /* None */; + var isAsync = hasModifierOfKind(node, 126 /* AsyncKeyword */) ? 2 /* Await */ : 0 /* None */; + fillSignature(58 /* ColonToken */, isGenerator | isAsync, node); + node.body = parseFunctionBlockOrSemicolon(isGenerator | isAsync, diagnosticMessage); + return finishNode(node); + } + function parsePropertyDeclaration(node) { + node.kind = 159 /* PropertyDeclaration */; + if (!node.questionToken && token() === 53 /* ExclamationToken */ && !scanner.hasPrecedingLineBreak()) { + node.exclamationToken = parseTokenNode(); + } + node.type = parseTypeAnnotation(); + node.initializer = doOutsideOfContext(8192 /* YieldContext */ | 32768 /* AwaitContext */ | 4096 /* DisallowInContext */, parseInitializer); + parseSemicolon(); + return finishNode(node); + } + function parsePropertyOrMethodDeclaration(node) { + var asteriskToken = parseOptionalToken(41 /* AsteriskToken */); + node.name = parsePropertyName(); + // Note: this is not legal as per the grammar. But we allow it in the parser and + // report an error in the grammar checker. + node.questionToken = parseOptionalToken(57 /* QuestionToken */); + if (asteriskToken || token() === 20 /* OpenParenToken */ || token() === 29 /* LessThanToken */) { + return parseMethodDeclaration(node, asteriskToken, ts.Diagnostics.or_expected); + } + return parsePropertyDeclaration(node); + } + function parseAccessorDeclaration(node, kind) { + node.kind = kind; + node.name = parsePropertyName(); + fillSignature(58 /* ColonToken */, 0 /* None */, node); + node.body = parseFunctionBlockOrSemicolon(0 /* None */); + return finishNode(node); + } + function isClassMemberStart() { + var idToken; + if (token() === 59 /* AtToken */) { + return true; + } + // Eat up all modifiers, but hold on to the last one in case it is actually an identifier. + while (ts.isModifierKind(token())) { + idToken = token(); + // If the idToken is a class modifier (protected, private, public, and static), it is + // certain that we are starting to parse class member. This allows better error recovery + // Example: + // public foo() ... // true + // public @dec blah ... // true; we will then report an error later + // export public ... // true; we will then report an error later + if (ts.isClassMemberModifier(idToken)) { + return true; + } + nextToken(); + } + if (token() === 41 /* AsteriskToken */) { + return true; + } + // Try to get the first property-like token following all modifiers. + // This can either be an identifier or the 'get' or 'set' keywords. + if (isLiteralPropertyName()) { + idToken = token(); + nextToken(); + } + // Index signatures and computed properties are class members; we can parse. + if (token() === 22 /* OpenBracketToken */) { + return true; + } + // If we were able to get any potential identifier... + if (idToken !== undefined) { + // If we have a non-keyword identifier, or if we have an accessor, then it's safe to parse. + if (!ts.isKeyword(idToken) || idToken === 142 /* SetKeyword */ || idToken === 131 /* GetKeyword */) { + return true; + } + // If it *is* a keyword, but not an accessor, check a little farther along + // to see if it should actually be parsed as a class member. + switch (token()) { + case 20 /* OpenParenToken */: // Method declaration + case 29 /* LessThanToken */: // Generic Method declaration + case 53 /* ExclamationToken */: // Non-null assertion on property name + case 58 /* ColonToken */: // Type Annotation for declaration + case 62 /* EqualsToken */: // Initializer for declaration + case 57 /* QuestionToken */: // Not valid, but permitted so that it gets caught later on. + return true; + default: + // Covers + // - Semicolons (declaration termination) + // - Closing braces (end-of-class, must be declaration) + // - End-of-files (not valid, but permitted so that it gets caught later on) + // - Line-breaks (enabling *automatic semicolon insertion*) + return canParseSemicolon(); + } + } + return false; + } + function parseDecorators() { + var list; + var listPos = getNodePos(); + while (true) { + var decoratorStart = getNodePos(); + if (!parseOptional(59 /* AtToken */)) { + break; + } + var decorator = createNode(157 /* Decorator */, decoratorStart); + decorator.expression = doInDecoratorContext(parseLeftHandSideExpressionOrHigher); + finishNode(decorator); + (list || (list = [])).push(decorator); + } + return list && createNodeArray(list, listPos); + } + /* + * There are situations in which a modifier like 'const' will appear unexpectedly, such as on a class member. + * In those situations, if we are entirely sure that 'const' is not valid on its own (such as when ASI takes effect + * and turns it into a standalone declaration), then it is better to parse it and report an error later. + * + * In such situations, 'permitInvalidConstAsModifier' should be set to true. + */ + function parseModifiers(permitInvalidConstAsModifier) { + var list; + var listPos = getNodePos(); + while (true) { + var modifierStart = scanner.getStartPos(); + var modifierKind = token(); + if (token() === 81 /* ConstKeyword */ && permitInvalidConstAsModifier) { + // We need to ensure that any subsequent modifiers appear on the same line + // so that when 'const' is a standalone declaration, we don't issue an error. + if (!tryParse(nextTokenIsOnSameLineAndCanFollowModifier)) { + break; + } + } + else { + if (!parseAnyContextualModifier()) { + break; + } + } + var modifier = finishNode(createNode(modifierKind, modifierStart)); + (list || (list = [])).push(modifier); + } + return list && createNodeArray(list, listPos); + } + function parseModifiersForArrowFunction() { + var modifiers; + if (token() === 126 /* AsyncKeyword */) { + var modifierStart = scanner.getStartPos(); + var modifierKind = token(); + nextToken(); + var modifier = finishNode(createNode(modifierKind, modifierStart)); + modifiers = createNodeArray([modifier], modifierStart); + } + return modifiers; + } + function parseClassElement() { + if (token() === 26 /* SemicolonToken */) { + var result = createNode(222 /* SemicolonClassElement */); + nextToken(); + return finishNode(result); + } + var node = createNodeWithJSDoc(0 /* Unknown */); + node.decorators = parseDecorators(); + node.modifiers = parseModifiers(/*permitInvalidConstAsModifier*/ true); + if (parseContextualModifier(131 /* GetKeyword */)) { + return parseAccessorDeclaration(node, 163 /* GetAccessor */); + } + if (parseContextualModifier(142 /* SetKeyword */)) { + return parseAccessorDeclaration(node, 164 /* SetAccessor */); + } + if (token() === 129 /* ConstructorKeyword */ || token() === 10 /* StringLiteral */) { + var constructorDeclaration = tryParseConstructorDeclaration(node); + if (constructorDeclaration) { + return constructorDeclaration; + } + } + if (isIndexSignature()) { + return parseIndexSignatureDeclaration(node); + } + // It is very important that we check this *after* checking indexers because + // the [ token can start an index signature or a computed property name + if (ts.tokenIsIdentifierOrKeyword(token()) || + token() === 10 /* StringLiteral */ || + token() === 8 /* NumericLiteral */ || + token() === 41 /* AsteriskToken */ || + token() === 22 /* OpenBracketToken */) { + var isAmbient = node.modifiers && ts.some(node.modifiers, isDeclareModifier); + if (isAmbient) { + for (var _i = 0, _a = node.modifiers; _i < _a.length; _i++) { + var m = _a[_i]; + m.flags |= 8388608 /* Ambient */; + } + return doInsideOfContext(8388608 /* Ambient */, function () { return parsePropertyOrMethodDeclaration(node); }); + } + else { + return parsePropertyOrMethodDeclaration(node); + } + } + if (node.decorators || node.modifiers) { + // treat this as a property declaration with a missing name. + node.name = createMissingNode(75 /* Identifier */, /*reportAtCurrentPosition*/ true, ts.Diagnostics.Declaration_expected); + return parsePropertyDeclaration(node); + } + // 'isClassMemberStart' should have hinted not to attempt parsing. + return ts.Debug.fail("Should not have attempted to parse class member declaration."); + } + function parseClassExpression() { + return parseClassDeclarationOrExpression(createNodeWithJSDoc(0 /* Unknown */), 214 /* ClassExpression */); + } + function parseClassDeclaration(node) { + return parseClassDeclarationOrExpression(node, 245 /* ClassDeclaration */); + } + function parseClassDeclarationOrExpression(node, kind) { + node.kind = kind; + parseExpected(80 /* ClassKeyword */); + node.name = parseNameOfClassDeclarationOrExpression(); + node.typeParameters = parseTypeParameters(); + node.heritageClauses = parseHeritageClauses(); + if (parseExpected(18 /* OpenBraceToken */)) { + // ClassTail[Yield,Await] : (Modified) See 14.5 + // ClassHeritage[?Yield,?Await]opt { ClassBody[?Yield,?Await]opt } + node.members = parseClassMembers(); + parseExpected(19 /* CloseBraceToken */); + } + else { + node.members = createMissingList(); + } + return finishNode(node); + } + function parseNameOfClassDeclarationOrExpression() { + // implements is a future reserved word so + // 'class implements' might mean either + // - class expression with omitted name, 'implements' starts heritage clause + // - class with name 'implements' + // 'isImplementsClause' helps to disambiguate between these two cases + return isIdentifier() && !isImplementsClause() + ? parseIdentifier() + : undefined; + } + function isImplementsClause() { + return token() === 113 /* ImplementsKeyword */ && lookAhead(nextTokenIsIdentifierOrKeyword); + } + function parseHeritageClauses() { + // ClassTail[Yield,Await] : (Modified) See 14.5 + // ClassHeritage[?Yield,?Await]opt { ClassBody[?Yield,?Await]opt } + if (isHeritageClause()) { + return parseList(22 /* HeritageClauses */, parseHeritageClause); + } + return undefined; + } + function parseHeritageClause() { + var tok = token(); + ts.Debug.assert(tok === 90 /* ExtendsKeyword */ || tok === 113 /* ImplementsKeyword */); // isListElement() should ensure this. + var node = createNode(279 /* HeritageClause */); + node.token = tok; + nextToken(); + node.types = parseDelimitedList(7 /* HeritageClauseElement */, parseExpressionWithTypeArguments); + return finishNode(node); + } + function parseExpressionWithTypeArguments() { + var node = createNode(216 /* ExpressionWithTypeArguments */); + node.expression = parseLeftHandSideExpressionOrHigher(); + node.typeArguments = tryParseTypeArguments(); + return finishNode(node); + } + function tryParseTypeArguments() { + return token() === 29 /* LessThanToken */ ? + parseBracketedList(20 /* TypeArguments */, parseType, 29 /* LessThanToken */, 31 /* GreaterThanToken */) : undefined; + } + function isHeritageClause() { + return token() === 90 /* ExtendsKeyword */ || token() === 113 /* ImplementsKeyword */; + } + function parseClassMembers() { + return parseList(5 /* ClassMembers */, parseClassElement); + } + function parseInterfaceDeclaration(node) { + node.kind = 246 /* InterfaceDeclaration */; + parseExpected(114 /* InterfaceKeyword */); + node.name = parseIdentifier(); + node.typeParameters = parseTypeParameters(); + node.heritageClauses = parseHeritageClauses(); + node.members = parseObjectTypeMembers(); + return finishNode(node); + } + function parseTypeAliasDeclaration(node) { + node.kind = 247 /* TypeAliasDeclaration */; + parseExpected(145 /* TypeKeyword */); + node.name = parseIdentifier(); + node.typeParameters = parseTypeParameters(); + parseExpected(62 /* EqualsToken */); + node.type = parseType(); + parseSemicolon(); + return finishNode(node); + } + // In an ambient declaration, the grammar only allows integer literals as initializers. + // In a non-ambient declaration, the grammar allows uninitialized members only in a + // ConstantEnumMemberSection, which starts at the beginning of an enum declaration + // or any time an integer literal initializer is encountered. + function parseEnumMember() { + var node = createNodeWithJSDoc(284 /* EnumMember */); + node.name = parsePropertyName(); + node.initializer = allowInAnd(parseInitializer); + return finishNode(node); + } + function parseEnumDeclaration(node) { + node.kind = 248 /* EnumDeclaration */; + parseExpected(88 /* EnumKeyword */); + node.name = parseIdentifier(); + if (parseExpected(18 /* OpenBraceToken */)) { + node.members = doOutsideOfYieldAndAwaitContext(function () { return parseDelimitedList(6 /* EnumMembers */, parseEnumMember); }); + parseExpected(19 /* CloseBraceToken */); + } + else { + node.members = createMissingList(); + } + return finishNode(node); + } + function parseModuleBlock() { + var node = createNode(250 /* ModuleBlock */); + if (parseExpected(18 /* OpenBraceToken */)) { + node.statements = parseList(1 /* BlockStatements */, parseStatement); + parseExpected(19 /* CloseBraceToken */); + } + else { + node.statements = createMissingList(); + } + return finishNode(node); + } + function parseModuleOrNamespaceDeclaration(node, flags) { + node.kind = 249 /* ModuleDeclaration */; + // If we are parsing a dotted namespace name, we want to + // propagate the 'Namespace' flag across the names if set. + var namespaceFlag = flags & 16 /* Namespace */; + node.flags |= flags; + node.name = parseIdentifier(); + node.body = parseOptional(24 /* DotToken */) + ? parseModuleOrNamespaceDeclaration(createNode(0 /* Unknown */), 4 /* NestedNamespace */ | namespaceFlag) + : parseModuleBlock(); + return finishNode(node); + } + function parseAmbientExternalModuleDeclaration(node) { + node.kind = 249 /* ModuleDeclaration */; + if (token() === 150 /* GlobalKeyword */) { + // parse 'global' as name of global scope augmentation + node.name = parseIdentifier(); + node.flags |= 1024 /* GlobalAugmentation */; + } + else { + node.name = parseLiteralNode(); + node.name.text = internIdentifier(node.name.text); + } + if (token() === 18 /* OpenBraceToken */) { + node.body = parseModuleBlock(); + } + else { + parseSemicolon(); + } + return finishNode(node); + } + function parseModuleDeclaration(node) { + var flags = 0; + if (token() === 150 /* GlobalKeyword */) { + // global augmentation + return parseAmbientExternalModuleDeclaration(node); + } + else if (parseOptional(136 /* NamespaceKeyword */)) { + flags |= 16 /* Namespace */; + } + else { + parseExpected(135 /* ModuleKeyword */); + if (token() === 10 /* StringLiteral */) { + return parseAmbientExternalModuleDeclaration(node); + } + } + return parseModuleOrNamespaceDeclaration(node, flags); + } + function isExternalModuleReference() { + return token() === 139 /* RequireKeyword */ && + lookAhead(nextTokenIsOpenParen); + } + function nextTokenIsOpenParen() { + return nextToken() === 20 /* OpenParenToken */; + } + function nextTokenIsSlash() { + return nextToken() === 43 /* SlashToken */; + } + function parseNamespaceExportDeclaration(node) { + node.kind = 252 /* NamespaceExportDeclaration */; + parseExpected(123 /* AsKeyword */); + parseExpected(136 /* NamespaceKeyword */); + node.name = parseIdentifier(); + parseSemicolon(); + return finishNode(node); + } + function parseImportDeclarationOrImportEqualsDeclaration(node) { + parseExpected(96 /* ImportKeyword */); + var afterImportPos = scanner.getStartPos(); + var identifier; + if (isIdentifier()) { + identifier = parseIdentifier(); + } + var isTypeOnly = false; + if (token() !== 149 /* FromKeyword */ && + (identifier === null || identifier === void 0 ? void 0 : identifier.escapedText) === "type" && + (isIdentifier() || tokenAfterImportDefinitelyProducesImportDeclaration())) { + isTypeOnly = true; + identifier = isIdentifier() ? parseIdentifier() : undefined; + } + if (identifier && !tokenAfterImportedIdentifierDefinitelyProducesImportDeclaration()) { + return parseImportEqualsDeclaration(node, identifier, isTypeOnly); + } + // Import statement + node.kind = 254 /* ImportDeclaration */; + // ImportDeclaration: + // import ImportClause from ModuleSpecifier ; + // import ModuleSpecifier; + if (identifier || // import id + token() === 41 /* AsteriskToken */ || // import * + token() === 18 /* OpenBraceToken */ // import { + ) { + node.importClause = parseImportClause(identifier, afterImportPos, isTypeOnly); + parseExpected(149 /* FromKeyword */); + } + node.moduleSpecifier = parseModuleSpecifier(); + parseSemicolon(); + return finishNode(node); + } + function tokenAfterImportDefinitelyProducesImportDeclaration() { + return token() === 41 /* AsteriskToken */ || token() === 18 /* OpenBraceToken */; + } + function tokenAfterImportedIdentifierDefinitelyProducesImportDeclaration() { + // In `import id ___`, the current token decides whether to produce + // an ImportDeclaration or ImportEqualsDeclaration. + return token() === 27 /* CommaToken */ || token() === 149 /* FromKeyword */; + } + function parseImportEqualsDeclaration(node, identifier, isTypeOnly) { + node.kind = 253 /* ImportEqualsDeclaration */; + node.name = identifier; + parseExpected(62 /* EqualsToken */); + node.moduleReference = parseModuleReference(); + parseSemicolon(); + var finished = finishNode(node); + if (isTypeOnly) { + parseErrorAtRange(finished, ts.Diagnostics.Only_ECMAScript_imports_may_use_import_type); + } + return finished; + } + function parseImportClause(identifier, fullStart, isTypeOnly) { + // ImportClause: + // ImportedDefaultBinding + // NameSpaceImport + // NamedImports + // ImportedDefaultBinding, NameSpaceImport + // ImportedDefaultBinding, NamedImports + var importClause = createNode(255 /* ImportClause */, fullStart); + importClause.isTypeOnly = isTypeOnly; + if (identifier) { + // ImportedDefaultBinding: + // ImportedBinding + importClause.name = identifier; + } + // If there was no default import or if there is comma token after default import + // parse namespace or named imports + if (!importClause.name || + parseOptional(27 /* CommaToken */)) { + importClause.namedBindings = token() === 41 /* AsteriskToken */ ? parseNamespaceImport() : parseNamedImportsOrExports(257 /* NamedImports */); + } + return finishNode(importClause); + } + function parseModuleReference() { + return isExternalModuleReference() + ? parseExternalModuleReference() + : parseEntityName(/*allowReservedWords*/ false); + } + function parseExternalModuleReference() { + var node = createNode(265 /* ExternalModuleReference */); + parseExpected(139 /* RequireKeyword */); + parseExpected(20 /* OpenParenToken */); + node.expression = parseModuleSpecifier(); + parseExpected(21 /* CloseParenToken */); + return finishNode(node); + } + function parseModuleSpecifier() { + if (token() === 10 /* StringLiteral */) { + var result = parseLiteralNode(); + result.text = internIdentifier(result.text); + return result; + } + else { + // We allow arbitrary expressions here, even though the grammar only allows string + // literals. We check to ensure that it is only a string literal later in the grammar + // check pass. + return parseExpression(); + } + } + function parseNamespaceImport() { + // NameSpaceImport: + // * as ImportedBinding + var namespaceImport = createNode(256 /* NamespaceImport */); + parseExpected(41 /* AsteriskToken */); + parseExpected(123 /* AsKeyword */); + namespaceImport.name = parseIdentifier(); + return finishNode(namespaceImport); + } + function parseNamedImportsOrExports(kind) { + var node = createNode(kind); + // NamedImports: + // { } + // { ImportsList } + // { ImportsList, } + // ImportsList: + // ImportSpecifier + // ImportsList, ImportSpecifier + node.elements = parseBracketedList(23 /* ImportOrExportSpecifiers */, kind === 257 /* NamedImports */ ? parseImportSpecifier : parseExportSpecifier, 18 /* OpenBraceToken */, 19 /* CloseBraceToken */); + return finishNode(node); + } + function parseExportSpecifier() { + return parseImportOrExportSpecifier(263 /* ExportSpecifier */); + } + function parseImportSpecifier() { + return parseImportOrExportSpecifier(258 /* ImportSpecifier */); + } + function parseImportOrExportSpecifier(kind) { + var node = createNode(kind); + // ImportSpecifier: + // BindingIdentifier + // IdentifierName as BindingIdentifier + // ExportSpecifier: + // IdentifierName + // IdentifierName as IdentifierName + var checkIdentifierIsKeyword = ts.isKeyword(token()) && !isIdentifier(); + var checkIdentifierStart = scanner.getTokenPos(); + var checkIdentifierEnd = scanner.getTextPos(); + var identifierName = parseIdentifierName(); + if (token() === 123 /* AsKeyword */) { + node.propertyName = identifierName; + parseExpected(123 /* AsKeyword */); + checkIdentifierIsKeyword = ts.isKeyword(token()) && !isIdentifier(); + checkIdentifierStart = scanner.getTokenPos(); + checkIdentifierEnd = scanner.getTextPos(); + node.name = parseIdentifierName(); + } + else { + node.name = identifierName; + } + if (kind === 258 /* ImportSpecifier */ && checkIdentifierIsKeyword) { + parseErrorAt(checkIdentifierStart, checkIdentifierEnd, ts.Diagnostics.Identifier_expected); + } + return finishNode(node); + } + function parseNamespaceExport(pos) { + var node = createNode(262 /* NamespaceExport */, pos); + node.name = parseIdentifier(); + return finishNode(node); + } + function parseExportDeclaration(node) { + node.kind = 260 /* ExportDeclaration */; + node.isTypeOnly = parseOptional(145 /* TypeKeyword */); + var namespaceExportPos = scanner.getStartPos(); + if (parseOptional(41 /* AsteriskToken */)) { + if (parseOptional(123 /* AsKeyword */)) { + node.exportClause = parseNamespaceExport(namespaceExportPos); + } + parseExpected(149 /* FromKeyword */); + node.moduleSpecifier = parseModuleSpecifier(); + } + else { + node.exportClause = parseNamedImportsOrExports(261 /* NamedExports */); + // It is not uncommon to accidentally omit the 'from' keyword. Additionally, in editing scenarios, + // the 'from' keyword can be parsed as a named export when the export clause is unterminated (i.e. `export { from "moduleName";`) + // If we don't have a 'from' keyword, see if we have a string literal such that ASI won't take effect. + if (token() === 149 /* FromKeyword */ || (token() === 10 /* StringLiteral */ && !scanner.hasPrecedingLineBreak())) { + parseExpected(149 /* FromKeyword */); + node.moduleSpecifier = parseModuleSpecifier(); + } + } + parseSemicolon(); + return finishNode(node); + } + function parseExportAssignment(node) { + node.kind = 259 /* ExportAssignment */; + if (parseOptional(62 /* EqualsToken */)) { + node.isExportEquals = true; + } + else { + parseExpected(84 /* DefaultKeyword */); + } + node.expression = parseAssignmentExpressionOrHigher(); + parseSemicolon(); + return finishNode(node); + } + function setExternalModuleIndicator(sourceFile) { + // Try to use the first top-level import/export when available, then + // fall back to looking for an 'import.meta' somewhere in the tree if necessary. + sourceFile.externalModuleIndicator = + ts.forEach(sourceFile.statements, isAnExternalModuleIndicatorNode) || + getImportMetaIfNecessary(sourceFile); + } + function isAnExternalModuleIndicatorNode(node) { + return hasModifierOfKind(node, 89 /* ExportKeyword */) + || node.kind === 253 /* ImportEqualsDeclaration */ && node.moduleReference.kind === 265 /* ExternalModuleReference */ + || node.kind === 254 /* ImportDeclaration */ + || node.kind === 259 /* ExportAssignment */ + || node.kind === 260 /* ExportDeclaration */ ? node : undefined; + } + function getImportMetaIfNecessary(sourceFile) { + return sourceFile.flags & 2097152 /* PossiblyContainsImportMeta */ ? + walkTreeForExternalModuleIndicators(sourceFile) : + undefined; + } + function walkTreeForExternalModuleIndicators(node) { + return isImportMeta(node) ? node : forEachChild(node, walkTreeForExternalModuleIndicators); + } + /** Do not use hasModifier inside the parser; it relies on parent pointers. Use this instead. */ + function hasModifierOfKind(node, kind) { + return ts.some(node.modifiers, function (m) { return m.kind === kind; }); + } + function isImportMeta(node) { + return ts.isMetaProperty(node) && node.keywordToken === 96 /* ImportKeyword */ && node.name.escapedText === "meta"; + } + var ParsingContext; + (function (ParsingContext) { + ParsingContext[ParsingContext["SourceElements"] = 0] = "SourceElements"; + ParsingContext[ParsingContext["BlockStatements"] = 1] = "BlockStatements"; + ParsingContext[ParsingContext["SwitchClauses"] = 2] = "SwitchClauses"; + ParsingContext[ParsingContext["SwitchClauseStatements"] = 3] = "SwitchClauseStatements"; + ParsingContext[ParsingContext["TypeMembers"] = 4] = "TypeMembers"; + ParsingContext[ParsingContext["ClassMembers"] = 5] = "ClassMembers"; + ParsingContext[ParsingContext["EnumMembers"] = 6] = "EnumMembers"; + ParsingContext[ParsingContext["HeritageClauseElement"] = 7] = "HeritageClauseElement"; + ParsingContext[ParsingContext["VariableDeclarations"] = 8] = "VariableDeclarations"; + ParsingContext[ParsingContext["ObjectBindingElements"] = 9] = "ObjectBindingElements"; + ParsingContext[ParsingContext["ArrayBindingElements"] = 10] = "ArrayBindingElements"; + ParsingContext[ParsingContext["ArgumentExpressions"] = 11] = "ArgumentExpressions"; + ParsingContext[ParsingContext["ObjectLiteralMembers"] = 12] = "ObjectLiteralMembers"; + ParsingContext[ParsingContext["JsxAttributes"] = 13] = "JsxAttributes"; + ParsingContext[ParsingContext["JsxChildren"] = 14] = "JsxChildren"; + ParsingContext[ParsingContext["ArrayLiteralMembers"] = 15] = "ArrayLiteralMembers"; + ParsingContext[ParsingContext["Parameters"] = 16] = "Parameters"; + ParsingContext[ParsingContext["JSDocParameters"] = 17] = "JSDocParameters"; + ParsingContext[ParsingContext["RestProperties"] = 18] = "RestProperties"; + ParsingContext[ParsingContext["TypeParameters"] = 19] = "TypeParameters"; + ParsingContext[ParsingContext["TypeArguments"] = 20] = "TypeArguments"; + ParsingContext[ParsingContext["TupleElementTypes"] = 21] = "TupleElementTypes"; + ParsingContext[ParsingContext["HeritageClauses"] = 22] = "HeritageClauses"; + ParsingContext[ParsingContext["ImportOrExportSpecifiers"] = 23] = "ImportOrExportSpecifiers"; + ParsingContext[ParsingContext["Count"] = 24] = "Count"; // Number of parsing contexts + })(ParsingContext || (ParsingContext = {})); + var Tristate; + (function (Tristate) { + Tristate[Tristate["False"] = 0] = "False"; + Tristate[Tristate["True"] = 1] = "True"; + Tristate[Tristate["Unknown"] = 2] = "Unknown"; + })(Tristate || (Tristate = {})); + var JSDocParser; + (function (JSDocParser) { + function parseJSDocTypeExpressionForTests(content, start, length) { + initializeState(content, 99 /* Latest */, /*_syntaxCursor:*/ undefined, 1 /* JS */); + sourceFile = createSourceFile("file.js", 99 /* Latest */, 1 /* JS */, /*isDeclarationFile*/ false); + scanner.setText(content, start, length); + currentToken = scanner.scan(); + var jsDocTypeExpression = parseJSDocTypeExpression(); + var diagnostics = parseDiagnostics; + clearState(); + return jsDocTypeExpression ? { jsDocTypeExpression: jsDocTypeExpression, diagnostics: diagnostics } : undefined; + } + JSDocParser.parseJSDocTypeExpressionForTests = parseJSDocTypeExpressionForTests; + // Parses out a JSDoc type expression. + function parseJSDocTypeExpression(mayOmitBraces) { + var result = createNode(294 /* JSDocTypeExpression */); + var hasBrace = (mayOmitBraces ? parseOptional : parseExpected)(18 /* OpenBraceToken */); + result.type = doInsideOfContext(4194304 /* JSDoc */, parseJSDocType); + if (!mayOmitBraces || hasBrace) { + parseExpectedJSDoc(19 /* CloseBraceToken */); + } + fixupParentReferences(result); + return finishNode(result); + } + JSDocParser.parseJSDocTypeExpression = parseJSDocTypeExpression; + function parseIsolatedJSDocComment(content, start, length) { + initializeState(content, 99 /* Latest */, /*_syntaxCursor:*/ undefined, 1 /* JS */); + sourceFile = { languageVariant: 0 /* Standard */, text: content }; + var jsDoc = doInsideOfContext(4194304 /* JSDoc */, function () { return parseJSDocCommentWorker(start, length); }); + var diagnostics = parseDiagnostics; + clearState(); + return jsDoc ? { jsDoc: jsDoc, diagnostics: diagnostics } : undefined; + } + JSDocParser.parseIsolatedJSDocComment = parseIsolatedJSDocComment; + function parseJSDocComment(parent, start, length) { + var _a; + var saveToken = currentToken; + var saveParseDiagnosticsLength = parseDiagnostics.length; + var saveParseErrorBeforeNextFinishedNode = parseErrorBeforeNextFinishedNode; + var comment = doInsideOfContext(4194304 /* JSDoc */, function () { return parseJSDocCommentWorker(start, length); }); + if (comment) { + comment.parent = parent; + } + if (contextFlags & 131072 /* JavaScriptFile */) { + if (!sourceFile.jsDocDiagnostics) { + sourceFile.jsDocDiagnostics = []; + } + (_a = sourceFile.jsDocDiagnostics).push.apply(_a, parseDiagnostics); + } + currentToken = saveToken; + parseDiagnostics.length = saveParseDiagnosticsLength; + parseErrorBeforeNextFinishedNode = saveParseErrorBeforeNextFinishedNode; + return comment; + } + JSDocParser.parseJSDocComment = parseJSDocComment; + var JSDocState; + (function (JSDocState) { + JSDocState[JSDocState["BeginningOfLine"] = 0] = "BeginningOfLine"; + JSDocState[JSDocState["SawAsterisk"] = 1] = "SawAsterisk"; + JSDocState[JSDocState["SavingComments"] = 2] = "SavingComments"; + JSDocState[JSDocState["SavingBackticks"] = 3] = "SavingBackticks"; + })(JSDocState || (JSDocState = {})); + var PropertyLikeParse; + (function (PropertyLikeParse) { + PropertyLikeParse[PropertyLikeParse["Property"] = 1] = "Property"; + PropertyLikeParse[PropertyLikeParse["Parameter"] = 2] = "Parameter"; + PropertyLikeParse[PropertyLikeParse["CallbackParameter"] = 4] = "CallbackParameter"; + })(PropertyLikeParse || (PropertyLikeParse = {})); + function parseJSDocCommentWorker(start, length) { + if (start === void 0) { start = 0; } + var content = sourceText; + var end = length === undefined ? content.length : start + length; + length = end - start; + ts.Debug.assert(start >= 0); + ts.Debug.assert(start <= end); + ts.Debug.assert(end <= content.length); + // Check for /** (JSDoc opening part) + if (!isJSDocLikeText(content, start)) { + return undefined; + } + var tags; + var tagsPos; + var tagsEnd; + var comments = []; + // + 3 for leading /**, - 5 in total for /** */ + return scanner.scanRange(start + 3, length - 5, function () { + // Initially we can parse out a tag. We also have seen a starting asterisk. + // This is so that /** * @type */ doesn't parse. + var state = 1 /* SawAsterisk */; + var margin; + // + 4 for leading '/** ' + var indent = start - Math.max(content.lastIndexOf("\n", start), 0) + 4; + function pushComment(text) { + if (!margin) { + margin = indent; + } + comments.push(text); + indent += text.length; + } + nextTokenJSDoc(); + while (parseOptionalJsdoc(5 /* WhitespaceTrivia */)) + ; + if (parseOptionalJsdoc(4 /* NewLineTrivia */)) { + state = 0 /* BeginningOfLine */; + indent = 0; + } + loop: while (true) { + switch (token()) { + case 59 /* AtToken */: + if (state === 0 /* BeginningOfLine */ || state === 1 /* SawAsterisk */) { + removeTrailingWhitespace(comments); + addTag(parseTag(indent)); + // NOTE: According to usejsdoc.org, a tag goes to end of line, except the last tag. + // Real-world comments may break this rule, so "BeginningOfLine" will not be a real line beginning + // for malformed examples like `/** @param {string} x @returns {number} the length */` + state = 0 /* BeginningOfLine */; + margin = undefined; + } + else { + pushComment(scanner.getTokenText()); + } + break; + case 4 /* NewLineTrivia */: + comments.push(scanner.getTokenText()); + state = 0 /* BeginningOfLine */; + indent = 0; + break; + case 41 /* AsteriskToken */: + var asterisk = scanner.getTokenText(); + if (state === 1 /* SawAsterisk */ || state === 2 /* SavingComments */) { + // If we've already seen an asterisk, then we can no longer parse a tag on this line + state = 2 /* SavingComments */; + pushComment(asterisk); + } + else { + // Ignore the first asterisk on a line + state = 1 /* SawAsterisk */; + indent += asterisk.length; + } + break; + case 5 /* WhitespaceTrivia */: + // only collect whitespace if we're already saving comments or have just crossed the comment indent margin + var whitespace = scanner.getTokenText(); + if (state === 2 /* SavingComments */) { + comments.push(whitespace); + } + else if (margin !== undefined && indent + whitespace.length > margin) { + comments.push(whitespace.slice(margin - indent - 1)); + } + indent += whitespace.length; + break; + case 1 /* EndOfFileToken */: + break loop; + default: + // Anything else is doc comment text. We just save it. Because it + // wasn't a tag, we can no longer parse a tag on this line until we hit the next + // line break. + state = 2 /* SavingComments */; + pushComment(scanner.getTokenText()); + break; + } + nextTokenJSDoc(); + } + removeLeadingNewlines(comments); + removeTrailingWhitespace(comments); + return createJSDocComment(); + }); + function removeLeadingNewlines(comments) { + while (comments.length && (comments[0] === "\n" || comments[0] === "\r")) { + comments.shift(); + } + } + function removeTrailingWhitespace(comments) { + while (comments.length && comments[comments.length - 1].trim() === "") { + comments.pop(); + } + } + function createJSDocComment() { + var result = createNode(303 /* JSDocComment */, start); + result.tags = tags && createNodeArray(tags, tagsPos, tagsEnd); + result.comment = comments.length ? comments.join("") : undefined; + return finishNode(result, end); + } + function isNextNonwhitespaceTokenEndOfFile() { + // We must use infinite lookahead, as there could be any number of newlines :( + while (true) { + nextTokenJSDoc(); + if (token() === 1 /* EndOfFileToken */) { + return true; + } + if (!(token() === 5 /* WhitespaceTrivia */ || token() === 4 /* NewLineTrivia */)) { + return false; + } + } + } + function skipWhitespace() { + if (token() === 5 /* WhitespaceTrivia */ || token() === 4 /* NewLineTrivia */) { + if (lookAhead(isNextNonwhitespaceTokenEndOfFile)) { + return; // Don't skip whitespace prior to EoF (or end of comment) - that shouldn't be included in any node's range + } + } + while (token() === 5 /* WhitespaceTrivia */ || token() === 4 /* NewLineTrivia */) { + nextTokenJSDoc(); + } + } + function skipWhitespaceOrAsterisk() { + if (token() === 5 /* WhitespaceTrivia */ || token() === 4 /* NewLineTrivia */) { + if (lookAhead(isNextNonwhitespaceTokenEndOfFile)) { + return ""; // Don't skip whitespace prior to EoF (or end of comment) - that shouldn't be included in any node's range + } + } + var precedingLineBreak = scanner.hasPrecedingLineBreak(); + var seenLineBreak = false; + var indentText = ""; + while ((precedingLineBreak && token() === 41 /* AsteriskToken */) || token() === 5 /* WhitespaceTrivia */ || token() === 4 /* NewLineTrivia */) { + indentText += scanner.getTokenText(); + if (token() === 4 /* NewLineTrivia */) { + precedingLineBreak = true; + seenLineBreak = true; + indentText = ""; + } + else if (token() === 41 /* AsteriskToken */) { + precedingLineBreak = false; + } + nextTokenJSDoc(); + } + return seenLineBreak ? indentText : ""; + } + function parseTag(margin) { + ts.Debug.assert(token() === 59 /* AtToken */); + var start = scanner.getTokenPos(); + nextTokenJSDoc(); + var tagName = parseJSDocIdentifierName(/*message*/ undefined); + var indentText = skipWhitespaceOrAsterisk(); + var tag; + switch (tagName.escapedText) { + case "author": + tag = parseAuthorTag(start, tagName, margin); + break; + case "implements": + tag = parseImplementsTag(start, tagName); + break; + case "augments": + case "extends": + tag = parseAugmentsTag(start, tagName); + break; + case "class": + case "constructor": + tag = parseSimpleTag(start, 310 /* JSDocClassTag */, tagName); + break; + case "public": + tag = parseSimpleTag(start, 311 /* JSDocPublicTag */, tagName); + break; + case "private": + tag = parseSimpleTag(start, 312 /* JSDocPrivateTag */, tagName); + break; + case "protected": + tag = parseSimpleTag(start, 313 /* JSDocProtectedTag */, tagName); + break; + case "readonly": + tag = parseSimpleTag(start, 314 /* JSDocReadonlyTag */, tagName); + break; + case "this": + tag = parseThisTag(start, tagName); + break; + case "enum": + tag = parseEnumTag(start, tagName); + break; + case "arg": + case "argument": + case "param": + return parseParameterOrPropertyTag(start, tagName, 2 /* Parameter */, margin); + case "return": + case "returns": + tag = parseReturnTag(start, tagName); + break; + case "template": + tag = parseTemplateTag(start, tagName); + break; + case "type": + tag = parseTypeTag(start, tagName); + break; + case "typedef": + tag = parseTypedefTag(start, tagName, margin); + break; + case "callback": + tag = parseCallbackTag(start, tagName, margin); + break; + default: + tag = parseUnknownTag(start, tagName); + break; + } + if (!tag.comment) { + // some tags, like typedef and callback, have already parsed their comments earlier + if (!indentText) { + margin += tag.end - tag.pos; + } + tag.comment = parseTagComments(margin, indentText.slice(margin)); + } + return tag; + } + function parseTagComments(indent, initialMargin) { + var comments = []; + var state = 0 /* BeginningOfLine */; + var margin; + function pushComment(text) { + if (!margin) { + margin = indent; + } + comments.push(text); + indent += text.length; + } + if (initialMargin !== undefined) { + // jump straight to saving comments if there is some initial indentation + if (initialMargin !== "") { + pushComment(initialMargin); + } + state = 1 /* SawAsterisk */; + } + var tok = token(); + loop: while (true) { + switch (tok) { + case 4 /* NewLineTrivia */: + if (state >= 1 /* SawAsterisk */) { + state = 0 /* BeginningOfLine */; + // don't use pushComment here because we want to keep the margin unchanged + comments.push(scanner.getTokenText()); + } + indent = 0; + break; + case 59 /* AtToken */: + if (state === 3 /* SavingBackticks */) { + comments.push(scanner.getTokenText()); + break; + } + scanner.setTextPos(scanner.getTextPos() - 1); + // falls through + case 1 /* EndOfFileToken */: + // Done + break loop; + case 5 /* WhitespaceTrivia */: + if (state === 2 /* SavingComments */ || state === 3 /* SavingBackticks */) { + pushComment(scanner.getTokenText()); + } + else { + var whitespace = scanner.getTokenText(); + // if the whitespace crosses the margin, take only the whitespace that passes the margin + if (margin !== undefined && indent + whitespace.length > margin) { + comments.push(whitespace.slice(margin - indent)); + } + indent += whitespace.length; + } + break; + case 18 /* OpenBraceToken */: + state = 2 /* SavingComments */; + if (lookAhead(function () { return nextTokenJSDoc() === 59 /* AtToken */ && ts.tokenIsIdentifierOrKeyword(nextTokenJSDoc()) && scanner.getTokenText() === "link"; })) { + pushComment(scanner.getTokenText()); + nextTokenJSDoc(); + pushComment(scanner.getTokenText()); + nextTokenJSDoc(); + } + pushComment(scanner.getTokenText()); + break; + case 61 /* BacktickToken */: + if (state === 3 /* SavingBackticks */) { + state = 2 /* SavingComments */; + } + else { + state = 3 /* SavingBackticks */; + } + pushComment(scanner.getTokenText()); + break; + case 41 /* AsteriskToken */: + if (state === 0 /* BeginningOfLine */) { + // leading asterisks start recording on the *next* (non-whitespace) token + state = 1 /* SawAsterisk */; + indent += 1; + break; + } + // record the * as a comment + // falls through + default: + if (state !== 3 /* SavingBackticks */) { + state = 2 /* SavingComments */; // leading identifiers start recording as well + } + pushComment(scanner.getTokenText()); + break; + } + tok = nextTokenJSDoc(); + } + removeLeadingNewlines(comments); + removeTrailingWhitespace(comments); + return comments.length === 0 ? undefined : comments.join(""); + } + function parseUnknownTag(start, tagName) { + var result = createNode(306 /* JSDocTag */, start); + result.tagName = tagName; + return finishNode(result); + } + function addTag(tag) { + if (!tag) { + return; + } + if (!tags) { + tags = [tag]; + tagsPos = tag.pos; + } + else { + tags.push(tag); + } + tagsEnd = tag.end; + } + function tryParseTypeExpression() { + skipWhitespaceOrAsterisk(); + return token() === 18 /* OpenBraceToken */ ? parseJSDocTypeExpression() : undefined; + } + function parseBracketNameInPropertyAndParamTag() { + // Looking for something like '[foo]', 'foo', '[foo.bar]' or 'foo.bar' + var isBracketed = parseOptionalJsdoc(22 /* OpenBracketToken */); + if (isBracketed) { + skipWhitespace(); + } + // a markdown-quoted name: `arg` is not legal jsdoc, but occurs in the wild + var isBackquoted = parseOptionalJsdoc(61 /* BacktickToken */); + var name = parseJSDocEntityName(); + if (isBackquoted) { + parseExpectedTokenJSDoc(61 /* BacktickToken */); + } + if (isBracketed) { + skipWhitespace(); + // May have an optional default, e.g. '[foo = 42]' + if (parseOptionalToken(62 /* EqualsToken */)) { + parseExpression(); + } + parseExpected(23 /* CloseBracketToken */); + } + return { name: name, isBracketed: isBracketed }; + } + function isObjectOrObjectArrayTypeReference(node) { + switch (node.kind) { + case 141 /* ObjectKeyword */: + return true; + case 174 /* ArrayType */: + return isObjectOrObjectArrayTypeReference(node.elementType); + default: + return ts.isTypeReferenceNode(node) && ts.isIdentifier(node.typeName) && node.typeName.escapedText === "Object" && !node.typeArguments; + } + } + function parseParameterOrPropertyTag(start, tagName, target, indent) { + var typeExpression = tryParseTypeExpression(); + var isNameFirst = !typeExpression; + skipWhitespaceOrAsterisk(); + var _a = parseBracketNameInPropertyAndParamTag(), name = _a.name, isBracketed = _a.isBracketed; + skipWhitespace(); + if (isNameFirst) { + typeExpression = tryParseTypeExpression(); + } + var result = target === 1 /* Property */ ? + createNode(323 /* JSDocPropertyTag */, start) : + createNode(317 /* JSDocParameterTag */, start); + var comment = parseTagComments(indent + scanner.getStartPos() - start); + var nestedTypeLiteral = target !== 4 /* CallbackParameter */ && parseNestedTypeLiteral(typeExpression, name, target, indent); + if (nestedTypeLiteral) { + typeExpression = nestedTypeLiteral; + isNameFirst = true; + } + result.tagName = tagName; + result.typeExpression = typeExpression; + result.name = name; + result.isNameFirst = isNameFirst; + result.isBracketed = isBracketed; + result.comment = comment; + return finishNode(result); + } + function parseNestedTypeLiteral(typeExpression, name, target, indent) { + if (typeExpression && isObjectOrObjectArrayTypeReference(typeExpression.type)) { + var typeLiteralExpression = createNode(294 /* JSDocTypeExpression */, scanner.getTokenPos()); + var child = void 0; + var jsdocTypeLiteral = void 0; + var start_3 = scanner.getStartPos(); + var children = void 0; + while (child = tryParse(function () { return parseChildParameterOrPropertyTag(target, indent, name); })) { + if (child.kind === 317 /* JSDocParameterTag */ || child.kind === 323 /* JSDocPropertyTag */) { + children = ts.append(children, child); + } + } + if (children) { + jsdocTypeLiteral = createNode(304 /* JSDocTypeLiteral */, start_3); + jsdocTypeLiteral.jsDocPropertyTags = children; + if (typeExpression.type.kind === 174 /* ArrayType */) { + jsdocTypeLiteral.isArrayType = true; + } + typeLiteralExpression.type = finishNode(jsdocTypeLiteral); + return finishNode(typeLiteralExpression); + } + } + } + function parseReturnTag(start, tagName) { + if (ts.some(tags, ts.isJSDocReturnTag)) { + parseErrorAt(tagName.pos, scanner.getTokenPos(), ts.Diagnostics._0_tag_already_specified, tagName.escapedText); + } + var result = createNode(318 /* JSDocReturnTag */, start); + result.tagName = tagName; + result.typeExpression = tryParseTypeExpression(); + return finishNode(result); + } + function parseTypeTag(start, tagName) { + if (ts.some(tags, ts.isJSDocTypeTag)) { + parseErrorAt(tagName.pos, scanner.getTokenPos(), ts.Diagnostics._0_tag_already_specified, tagName.escapedText); + } + var result = createNode(320 /* JSDocTypeTag */, start); + result.tagName = tagName; + result.typeExpression = parseJSDocTypeExpression(/*mayOmitBraces*/ true); + return finishNode(result); + } + function parseAuthorTag(start, tagName, indent) { + var result = createNode(309 /* JSDocAuthorTag */, start); + result.tagName = tagName; + var authorInfoWithEmail = tryParse(function () { return tryParseAuthorNameAndEmail(); }); + if (!authorInfoWithEmail) { + return finishNode(result); + } + result.comment = authorInfoWithEmail; + if (lookAhead(function () { return nextToken() !== 4 /* NewLineTrivia */; })) { + var comment = parseTagComments(indent); + if (comment) { + result.comment += comment; + } + } + return finishNode(result); + } + function tryParseAuthorNameAndEmail() { + var comments = []; + var seenLessThan = false; + var seenGreaterThan = false; + var token = scanner.getToken(); + loop: while (true) { + switch (token) { + case 75 /* Identifier */: + case 5 /* WhitespaceTrivia */: + case 24 /* DotToken */: + case 59 /* AtToken */: + comments.push(scanner.getTokenText()); + break; + case 29 /* LessThanToken */: + if (seenLessThan || seenGreaterThan) { + return; + } + seenLessThan = true; + comments.push(scanner.getTokenText()); + break; + case 31 /* GreaterThanToken */: + if (!seenLessThan || seenGreaterThan) { + return; + } + seenGreaterThan = true; + comments.push(scanner.getTokenText()); + scanner.setTextPos(scanner.getTokenPos() + 1); + break loop; + case 4 /* NewLineTrivia */: + case 1 /* EndOfFileToken */: + break loop; + } + token = nextTokenJSDoc(); + } + if (seenLessThan && seenGreaterThan) { + return comments.length === 0 ? undefined : comments.join(""); + } + } + function parseImplementsTag(start, tagName) { + var result = createNode(308 /* JSDocImplementsTag */, start); + result.tagName = tagName; + result.class = parseExpressionWithTypeArgumentsForAugments(); + return finishNode(result); + } + function parseAugmentsTag(start, tagName) { + var result = createNode(307 /* JSDocAugmentsTag */, start); + result.tagName = tagName; + result.class = parseExpressionWithTypeArgumentsForAugments(); + return finishNode(result); + } + function parseExpressionWithTypeArgumentsForAugments() { + var usedBrace = parseOptional(18 /* OpenBraceToken */); + var node = createNode(216 /* ExpressionWithTypeArguments */); + node.expression = parsePropertyAccessEntityNameExpression(); + node.typeArguments = tryParseTypeArguments(); + var res = finishNode(node); + if (usedBrace) { + parseExpected(19 /* CloseBraceToken */); + } + return res; + } + function parsePropertyAccessEntityNameExpression() { + var node = parseJSDocIdentifierName(); + while (parseOptional(24 /* DotToken */)) { + var prop = createNode(194 /* PropertyAccessExpression */, node.pos); + prop.expression = node; + prop.name = parseJSDocIdentifierName(); + node = finishNode(prop); + } + return node; + } + function parseSimpleTag(start, kind, tagName) { + var tag = createNode(kind, start); + tag.tagName = tagName; + return finishNode(tag); + } + function parseThisTag(start, tagName) { + var tag = createNode(319 /* JSDocThisTag */, start); + tag.tagName = tagName; + tag.typeExpression = parseJSDocTypeExpression(/*mayOmitBraces*/ true); + skipWhitespace(); + return finishNode(tag); + } + function parseEnumTag(start, tagName) { + var tag = createNode(316 /* JSDocEnumTag */, start); + tag.tagName = tagName; + tag.typeExpression = parseJSDocTypeExpression(/*mayOmitBraces*/ true); + skipWhitespace(); + return finishNode(tag); + } + function parseTypedefTag(start, tagName, indent) { + var typeExpression = tryParseTypeExpression(); + skipWhitespaceOrAsterisk(); + var typedefTag = createNode(322 /* JSDocTypedefTag */, start); + typedefTag.tagName = tagName; + typedefTag.fullName = parseJSDocTypeNameWithNamespace(); + typedefTag.name = getJSDocTypeAliasName(typedefTag.fullName); + skipWhitespace(); + typedefTag.comment = parseTagComments(indent); + typedefTag.typeExpression = typeExpression; + var end; + if (!typeExpression || isObjectOrObjectArrayTypeReference(typeExpression.type)) { + var child = void 0; + var jsdocTypeLiteral = void 0; + var childTypeTag = void 0; + while (child = tryParse(function () { return parseChildPropertyTag(indent); })) { + if (!jsdocTypeLiteral) { + jsdocTypeLiteral = createNode(304 /* JSDocTypeLiteral */, start); + } + if (child.kind === 320 /* JSDocTypeTag */) { + if (childTypeTag) { + break; + } + else { + childTypeTag = child; + } + } + else { + jsdocTypeLiteral.jsDocPropertyTags = ts.append(jsdocTypeLiteral.jsDocPropertyTags, child); + } + } + if (jsdocTypeLiteral) { + if (typeExpression && typeExpression.type.kind === 174 /* ArrayType */) { + jsdocTypeLiteral.isArrayType = true; + } + typedefTag.typeExpression = childTypeTag && childTypeTag.typeExpression && !isObjectOrObjectArrayTypeReference(childTypeTag.typeExpression.type) ? + childTypeTag.typeExpression : + finishNode(jsdocTypeLiteral); + end = typedefTag.typeExpression.end; + } + } + // Only include the characters between the name end and the next token if a comment was actually parsed out - otherwise it's just whitespace + return finishNode(typedefTag, end || typedefTag.comment !== undefined ? scanner.getStartPos() : (typedefTag.fullName || typedefTag.typeExpression || typedefTag.tagName).end); + } + function parseJSDocTypeNameWithNamespace(nested) { + var pos = scanner.getTokenPos(); + if (!ts.tokenIsIdentifierOrKeyword(token())) { + return undefined; + } + var typeNameOrNamespaceName = parseJSDocIdentifierName(); + if (parseOptional(24 /* DotToken */)) { + var jsDocNamespaceNode = createNode(249 /* ModuleDeclaration */, pos); + if (nested) { + jsDocNamespaceNode.flags |= 4 /* NestedNamespace */; + } + jsDocNamespaceNode.name = typeNameOrNamespaceName; + jsDocNamespaceNode.body = parseJSDocTypeNameWithNamespace(/*nested*/ true); + return finishNode(jsDocNamespaceNode); + } + if (nested) { + typeNameOrNamespaceName.isInJSDocNamespace = true; + } + return typeNameOrNamespaceName; + } + function parseCallbackTag(start, tagName, indent) { + var callbackTag = createNode(315 /* JSDocCallbackTag */, start); + callbackTag.tagName = tagName; + callbackTag.fullName = parseJSDocTypeNameWithNamespace(); + callbackTag.name = getJSDocTypeAliasName(callbackTag.fullName); + skipWhitespace(); + callbackTag.comment = parseTagComments(indent); + var child; + var jsdocSignature = createNode(305 /* JSDocSignature */, start); + jsdocSignature.parameters = []; + while (child = tryParse(function () { return parseChildParameterOrPropertyTag(4 /* CallbackParameter */, indent); })) { + jsdocSignature.parameters = ts.append(jsdocSignature.parameters, child); + } + var returnTag = tryParse(function () { + if (parseOptionalJsdoc(59 /* AtToken */)) { + var tag = parseTag(indent); + if (tag && tag.kind === 318 /* JSDocReturnTag */) { + return tag; + } + } + }); + if (returnTag) { + jsdocSignature.type = returnTag; + } + callbackTag.typeExpression = finishNode(jsdocSignature); + return finishNode(callbackTag); + } + function getJSDocTypeAliasName(fullName) { + if (fullName) { + var rightNode = fullName; + while (true) { + if (ts.isIdentifier(rightNode) || !rightNode.body) { + return ts.isIdentifier(rightNode) ? rightNode : rightNode.name; + } + rightNode = rightNode.body; + } + } + } + function escapedTextsEqual(a, b) { + while (!ts.isIdentifier(a) || !ts.isIdentifier(b)) { + if (!ts.isIdentifier(a) && !ts.isIdentifier(b) && a.right.escapedText === b.right.escapedText) { + a = a.left; + b = b.left; + } + else { + return false; + } + } + return a.escapedText === b.escapedText; + } + function parseChildPropertyTag(indent) { + return parseChildParameterOrPropertyTag(1 /* Property */, indent); + } + function parseChildParameterOrPropertyTag(target, indent, name) { + var canParseTag = true; + var seenAsterisk = false; + while (true) { + switch (nextTokenJSDoc()) { + case 59 /* AtToken */: + if (canParseTag) { + var child = tryParseChildTag(target, indent); + if (child && (child.kind === 317 /* JSDocParameterTag */ || child.kind === 323 /* JSDocPropertyTag */) && + target !== 4 /* CallbackParameter */ && + name && (ts.isIdentifier(child.name) || !escapedTextsEqual(name, child.name.left))) { + return false; + } + return child; + } + seenAsterisk = false; + break; + case 4 /* NewLineTrivia */: + canParseTag = true; + seenAsterisk = false; + break; + case 41 /* AsteriskToken */: + if (seenAsterisk) { + canParseTag = false; + } + seenAsterisk = true; + break; + case 75 /* Identifier */: + canParseTag = false; + break; + case 1 /* EndOfFileToken */: + return false; + } + } + } + function tryParseChildTag(target, indent) { + ts.Debug.assert(token() === 59 /* AtToken */); + var start = scanner.getStartPos(); + nextTokenJSDoc(); + var tagName = parseJSDocIdentifierName(); + skipWhitespace(); + var t; + switch (tagName.escapedText) { + case "type": + return target === 1 /* Property */ && parseTypeTag(start, tagName); + case "prop": + case "property": + t = 1 /* Property */; + break; + case "arg": + case "argument": + case "param": + t = 2 /* Parameter */ | 4 /* CallbackParameter */; + break; + default: + return false; + } + if (!(target & t)) { + return false; + } + return parseParameterOrPropertyTag(start, tagName, target, indent); + } + function parseTemplateTag(start, tagName) { + // the template tag looks like '@template {Constraint} T,U,V' + var constraint; + if (token() === 18 /* OpenBraceToken */) { + constraint = parseJSDocTypeExpression(); + } + var typeParameters = []; + var typeParametersPos = getNodePos(); + do { + skipWhitespace(); + var typeParameter = createNode(155 /* TypeParameter */); + typeParameter.name = parseJSDocIdentifierName(ts.Diagnostics.Unexpected_token_A_type_parameter_name_was_expected_without_curly_braces); + finishNode(typeParameter); + skipWhitespaceOrAsterisk(); + typeParameters.push(typeParameter); + } while (parseOptionalJsdoc(27 /* CommaToken */)); + var result = createNode(321 /* JSDocTemplateTag */, start); + result.tagName = tagName; + result.constraint = constraint; + result.typeParameters = createNodeArray(typeParameters, typeParametersPos); + finishNode(result); + return result; + } + function parseOptionalJsdoc(t) { + if (token() === t) { + nextTokenJSDoc(); + return true; + } + return false; + } + function parseJSDocEntityName() { + var entity = parseJSDocIdentifierName(); + if (parseOptional(22 /* OpenBracketToken */)) { + parseExpected(23 /* CloseBracketToken */); + // Note that y[] is accepted as an entity name, but the postfix brackets are not saved for checking. + // Technically usejsdoc.org requires them for specifying a property of a type equivalent to Array<{ x: ...}> + // but it's not worth it to enforce that restriction. + } + while (parseOptional(24 /* DotToken */)) { + var name = parseJSDocIdentifierName(); + if (parseOptional(22 /* OpenBracketToken */)) { + parseExpected(23 /* CloseBracketToken */); + } + entity = createQualifiedName(entity, name); + } + return entity; + } + function parseJSDocIdentifierName(message) { + if (!ts.tokenIsIdentifierOrKeyword(token())) { + return createMissingNode(75 /* Identifier */, /*reportAtCurrentPosition*/ !message, message || ts.Diagnostics.Identifier_expected); + } + identifierCount++; + var pos = scanner.getTokenPos(); + var end = scanner.getTextPos(); + var result = createNode(75 /* Identifier */, pos); + if (token() !== 75 /* Identifier */) { + result.originalKeywordKind = token(); + } + result.escapedText = ts.escapeLeadingUnderscores(internIdentifier(scanner.getTokenValue())); + finishNode(result, end); + nextTokenJSDoc(); + return result; + } + } + })(JSDocParser = Parser.JSDocParser || (Parser.JSDocParser = {})); + })(Parser || (Parser = {})); + var IncrementalParser; + (function (IncrementalParser) { + function updateSourceFile(sourceFile, newText, textChangeRange, aggressiveChecks) { + aggressiveChecks = aggressiveChecks || ts.Debug.shouldAssert(2 /* Aggressive */); + checkChangeRange(sourceFile, newText, textChangeRange, aggressiveChecks); + if (ts.textChangeRangeIsUnchanged(textChangeRange)) { + // if the text didn't change, then we can just return our current source file as-is. + return sourceFile; + } + if (sourceFile.statements.length === 0) { + // If we don't have any statements in the current source file, then there's no real + // way to incrementally parse. So just do a full parse instead. + return Parser.parseSourceFile(sourceFile.fileName, newText, sourceFile.languageVersion, /*syntaxCursor*/ undefined, /*setParentNodes*/ true, sourceFile.scriptKind); + } + // Make sure we're not trying to incrementally update a source file more than once. Once + // we do an update the original source file is considered unusable from that point onwards. + // + // This is because we do incremental parsing in-place. i.e. we take nodes from the old + // tree and give them new positions and parents. From that point on, trusting the old + // tree at all is not possible as far too much of it may violate invariants. + var incrementalSourceFile = sourceFile; + ts.Debug.assert(!incrementalSourceFile.hasBeenIncrementallyParsed); + incrementalSourceFile.hasBeenIncrementallyParsed = true; + var oldText = sourceFile.text; + var syntaxCursor = createSyntaxCursor(sourceFile); + // Make the actual change larger so that we know to reparse anything whose lookahead + // might have intersected the change. + var changeRange = extendToAffectedRange(sourceFile, textChangeRange); + checkChangeRange(sourceFile, newText, changeRange, aggressiveChecks); + // Ensure that extending the affected range only moved the start of the change range + // earlier in the file. + ts.Debug.assert(changeRange.span.start <= textChangeRange.span.start); + ts.Debug.assert(ts.textSpanEnd(changeRange.span) === ts.textSpanEnd(textChangeRange.span)); + ts.Debug.assert(ts.textSpanEnd(ts.textChangeRangeNewSpan(changeRange)) === ts.textSpanEnd(ts.textChangeRangeNewSpan(textChangeRange))); + // The is the amount the nodes after the edit range need to be adjusted. It can be + // positive (if the edit added characters), negative (if the edit deleted characters) + // or zero (if this was a pure overwrite with nothing added/removed). + var delta = ts.textChangeRangeNewSpan(changeRange).length - changeRange.span.length; + // If we added or removed characters during the edit, then we need to go and adjust all + // the nodes after the edit. Those nodes may move forward (if we inserted chars) or they + // may move backward (if we deleted chars). + // + // Doing this helps us out in two ways. First, it means that any nodes/tokens we want + // to reuse are already at the appropriate position in the new text. That way when we + // reuse them, we don't have to figure out if they need to be adjusted. Second, it makes + // it very easy to determine if we can reuse a node. If the node's position is at where + // we are in the text, then we can reuse it. Otherwise we can't. If the node's position + // is ahead of us, then we'll need to rescan tokens. If the node's position is behind + // us, then we'll need to skip it or crumble it as appropriate + // + // We will also adjust the positions of nodes that intersect the change range as well. + // By doing this, we ensure that all the positions in the old tree are consistent, not + // just the positions of nodes entirely before/after the change range. By being + // consistent, we can then easily map from positions to nodes in the old tree easily. + // + // Also, mark any syntax elements that intersect the changed span. We know, up front, + // that we cannot reuse these elements. + updateTokenPositionsAndMarkElements(incrementalSourceFile, changeRange.span.start, ts.textSpanEnd(changeRange.span), ts.textSpanEnd(ts.textChangeRangeNewSpan(changeRange)), delta, oldText, newText, aggressiveChecks); + // Now that we've set up our internal incremental state just proceed and parse the + // source file in the normal fashion. When possible the parser will retrieve and + // reuse nodes from the old tree. + // + // Note: passing in 'true' for setNodeParents is very important. When incrementally + // parsing, we will be reusing nodes from the old tree, and placing it into new + // parents. If we don't set the parents now, we'll end up with an observably + // inconsistent tree. Setting the parents on the new tree should be very fast. We + // will immediately bail out of walking any subtrees when we can see that their parents + // are already correct. + var result = Parser.parseSourceFile(sourceFile.fileName, newText, sourceFile.languageVersion, syntaxCursor, /*setParentNodes*/ true, sourceFile.scriptKind); + result.commentDirectives = getNewCommentDirectives(sourceFile.commentDirectives, result.commentDirectives, changeRange.span.start, ts.textSpanEnd(changeRange.span), delta, oldText, newText, aggressiveChecks); + return result; + } + IncrementalParser.updateSourceFile = updateSourceFile; + function getNewCommentDirectives(oldDirectives, newDirectives, changeStart, changeRangeOldEnd, delta, oldText, newText, aggressiveChecks) { + if (!oldDirectives) + return newDirectives; + var commentDirectives; + var addedNewlyScannedDirectives = false; + for (var _i = 0, oldDirectives_1 = oldDirectives; _i < oldDirectives_1.length; _i++) { + var directive = oldDirectives_1[_i]; + var range = directive.range, type = directive.type; + // Range before the change + if (range.end < changeStart) { + commentDirectives = ts.append(commentDirectives, directive); + } + else if (range.pos > changeRangeOldEnd) { + addNewlyScannedDirectives(); + // Node is entirely past the change range. We need to move both its pos and + // end, forward or backward appropriately. + var updatedDirective = { + range: { pos: range.pos + delta, end: range.end + delta }, + type: type + }; + commentDirectives = ts.append(commentDirectives, updatedDirective); + if (aggressiveChecks) { + ts.Debug.assert(oldText.substring(range.pos, range.end) === newText.substring(updatedDirective.range.pos, updatedDirective.range.end)); + } + } + // Ignore ranges that fall in change range + } + addNewlyScannedDirectives(); + return commentDirectives; + function addNewlyScannedDirectives() { + if (addedNewlyScannedDirectives) + return; + addedNewlyScannedDirectives = true; + if (!commentDirectives) { + commentDirectives = newDirectives; + } + else if (newDirectives) { + commentDirectives.push.apply(commentDirectives, newDirectives); + } + } + } + function moveElementEntirelyPastChangeRange(element, isArray, delta, oldText, newText, aggressiveChecks) { + if (isArray) { + visitArray(element); + } + else { + visitNode(element); + } + return; + function visitNode(node) { + var text = ""; + if (aggressiveChecks && shouldCheckNode(node)) { + text = oldText.substring(node.pos, node.end); + } + // Ditch any existing LS children we may have created. This way we can avoid + // moving them forward. + if (node._children) { + node._children = undefined; + } + node.pos += delta; + node.end += delta; + if (aggressiveChecks && shouldCheckNode(node)) { + ts.Debug.assert(text === newText.substring(node.pos, node.end)); + } + forEachChild(node, visitNode, visitArray); + if (ts.hasJSDocNodes(node)) { + for (var _i = 0, _a = node.jsDoc; _i < _a.length; _i++) { + var jsDocComment = _a[_i]; + visitNode(jsDocComment); + } + } + checkNodePositions(node, aggressiveChecks); + } + function visitArray(array) { + array._children = undefined; + array.pos += delta; + array.end += delta; + for (var _i = 0, array_8 = array; _i < array_8.length; _i++) { + var node = array_8[_i]; + visitNode(node); + } + } + } + function shouldCheckNode(node) { + switch (node.kind) { + case 10 /* StringLiteral */: + case 8 /* NumericLiteral */: + case 75 /* Identifier */: + return true; + } + return false; + } + function adjustIntersectingElement(element, changeStart, changeRangeOldEnd, changeRangeNewEnd, delta) { + ts.Debug.assert(element.end >= changeStart, "Adjusting an element that was entirely before the change range"); + ts.Debug.assert(element.pos <= changeRangeOldEnd, "Adjusting an element that was entirely after the change range"); + ts.Debug.assert(element.pos <= element.end); + // We have an element that intersects the change range in some way. It may have its + // start, or its end (or both) in the changed range. We want to adjust any part + // that intersects such that the final tree is in a consistent state. i.e. all + // children have spans within the span of their parent, and all siblings are ordered + // properly. + // We may need to update both the 'pos' and the 'end' of the element. + // If the 'pos' is before the start of the change, then we don't need to touch it. + // If it isn't, then the 'pos' must be inside the change. How we update it will + // depend if delta is positive or negative. If delta is positive then we have + // something like: + // + // -------------------AAA----------------- + // -------------------BBBCCCCCCC----------------- + // + // In this case, we consider any node that started in the change range to still be + // starting at the same position. + // + // however, if the delta is negative, then we instead have something like this: + // + // -------------------XXXYYYYYYY----------------- + // -------------------ZZZ----------------- + // + // In this case, any element that started in the 'X' range will keep its position. + // However any element that started after that will have their pos adjusted to be + // at the end of the new range. i.e. any node that started in the 'Y' range will + // be adjusted to have their start at the end of the 'Z' range. + // + // The element will keep its position if possible. Or Move backward to the new-end + // if it's in the 'Y' range. + element.pos = Math.min(element.pos, changeRangeNewEnd); + // If the 'end' is after the change range, then we always adjust it by the delta + // amount. However, if the end is in the change range, then how we adjust it + // will depend on if delta is positive or negative. If delta is positive then we + // have something like: + // + // -------------------AAA----------------- + // -------------------BBBCCCCCCC----------------- + // + // In this case, we consider any node that ended inside the change range to keep its + // end position. + // + // however, if the delta is negative, then we instead have something like this: + // + // -------------------XXXYYYYYYY----------------- + // -------------------ZZZ----------------- + // + // In this case, any element that ended in the 'X' range will keep its position. + // However any element that ended after that will have their pos adjusted to be + // at the end of the new range. i.e. any node that ended in the 'Y' range will + // be adjusted to have their end at the end of the 'Z' range. + if (element.end >= changeRangeOldEnd) { + // Element ends after the change range. Always adjust the end pos. + element.end += delta; + } + else { + // Element ends in the change range. The element will keep its position if + // possible. Or Move backward to the new-end if it's in the 'Y' range. + element.end = Math.min(element.end, changeRangeNewEnd); + } + ts.Debug.assert(element.pos <= element.end); + if (element.parent) { + ts.Debug.assert(element.pos >= element.parent.pos); + ts.Debug.assert(element.end <= element.parent.end); + } + } + function checkNodePositions(node, aggressiveChecks) { + if (aggressiveChecks) { + var pos_2 = node.pos; + var visitNode_1 = function (child) { + ts.Debug.assert(child.pos >= pos_2); + pos_2 = child.end; + }; + if (ts.hasJSDocNodes(node)) { + for (var _i = 0, _a = node.jsDoc; _i < _a.length; _i++) { + var jsDocComment = _a[_i]; + visitNode_1(jsDocComment); + } + } + forEachChild(node, visitNode_1); + ts.Debug.assert(pos_2 <= node.end); + } + } + function updateTokenPositionsAndMarkElements(sourceFile, changeStart, changeRangeOldEnd, changeRangeNewEnd, delta, oldText, newText, aggressiveChecks) { + visitNode(sourceFile); + return; + function visitNode(child) { + ts.Debug.assert(child.pos <= child.end); + if (child.pos > changeRangeOldEnd) { + // Node is entirely past the change range. We need to move both its pos and + // end, forward or backward appropriately. + moveElementEntirelyPastChangeRange(child, /*isArray*/ false, delta, oldText, newText, aggressiveChecks); + return; + } + // Check if the element intersects the change range. If it does, then it is not + // reusable. Also, we'll need to recurse to see what constituent portions we may + // be able to use. + var fullEnd = child.end; + if (fullEnd >= changeStart) { + child.intersectsChange = true; + child._children = undefined; + // Adjust the pos or end (or both) of the intersecting element accordingly. + adjustIntersectingElement(child, changeStart, changeRangeOldEnd, changeRangeNewEnd, delta); + forEachChild(child, visitNode, visitArray); + if (ts.hasJSDocNodes(child)) { + for (var _i = 0, _a = child.jsDoc; _i < _a.length; _i++) { + var jsDocComment = _a[_i]; + visitNode(jsDocComment); + } + } + checkNodePositions(child, aggressiveChecks); + return; + } + // Otherwise, the node is entirely before the change range. No need to do anything with it. + ts.Debug.assert(fullEnd < changeStart); + } + function visitArray(array) { + ts.Debug.assert(array.pos <= array.end); + if (array.pos > changeRangeOldEnd) { + // Array is entirely after the change range. We need to move it, and move any of + // its children. + moveElementEntirelyPastChangeRange(array, /*isArray*/ true, delta, oldText, newText, aggressiveChecks); + return; + } + // Check if the element intersects the change range. If it does, then it is not + // reusable. Also, we'll need to recurse to see what constituent portions we may + // be able to use. + var fullEnd = array.end; + if (fullEnd >= changeStart) { + array.intersectsChange = true; + array._children = undefined; + // Adjust the pos or end (or both) of the intersecting array accordingly. + adjustIntersectingElement(array, changeStart, changeRangeOldEnd, changeRangeNewEnd, delta); + for (var _i = 0, array_9 = array; _i < array_9.length; _i++) { + var node = array_9[_i]; + visitNode(node); + } + return; + } + // Otherwise, the array is entirely before the change range. No need to do anything with it. + ts.Debug.assert(fullEnd < changeStart); + } + } + function extendToAffectedRange(sourceFile, changeRange) { + // Consider the following code: + // void foo() { /; } + // + // If the text changes with an insertion of / just before the semicolon then we end up with: + // void foo() { //; } + // + // If we were to just use the changeRange a is, then we would not rescan the { token + // (as it does not intersect the actual original change range). Because an edit may + // change the token touching it, we actually need to look back *at least* one token so + // that the prior token sees that change. + var maxLookahead = 1; + var start = changeRange.span.start; + // the first iteration aligns us with the change start. subsequent iteration move us to + // the left by maxLookahead tokens. We only need to do this as long as we're not at the + // start of the tree. + for (var i = 0; start > 0 && i <= maxLookahead; i++) { + var nearestNode = findNearestNodeStartingBeforeOrAtPosition(sourceFile, start); + ts.Debug.assert(nearestNode.pos <= start); + var position = nearestNode.pos; + start = Math.max(0, position - 1); + } + var finalSpan = ts.createTextSpanFromBounds(start, ts.textSpanEnd(changeRange.span)); + var finalLength = changeRange.newLength + (changeRange.span.start - start); + return ts.createTextChangeRange(finalSpan, finalLength); + } + function findNearestNodeStartingBeforeOrAtPosition(sourceFile, position) { + var bestResult = sourceFile; + var lastNodeEntirelyBeforePosition; + forEachChild(sourceFile, visit); + if (lastNodeEntirelyBeforePosition) { + var lastChildOfLastEntireNodeBeforePosition = getLastDescendant(lastNodeEntirelyBeforePosition); + if (lastChildOfLastEntireNodeBeforePosition.pos > bestResult.pos) { + bestResult = lastChildOfLastEntireNodeBeforePosition; + } + } + return bestResult; + function getLastDescendant(node) { + while (true) { + var lastChild = ts.getLastChild(node); + if (lastChild) { + node = lastChild; + } + else { + return node; + } + } + } + function visit(child) { + if (ts.nodeIsMissing(child)) { + // Missing nodes are effectively invisible to us. We never even consider them + // When trying to find the nearest node before us. + return; + } + // If the child intersects this position, then this node is currently the nearest + // node that starts before the position. + if (child.pos <= position) { + if (child.pos >= bestResult.pos) { + // This node starts before the position, and is closer to the position than + // the previous best node we found. It is now the new best node. + bestResult = child; + } + // Now, the node may overlap the position, or it may end entirely before the + // position. If it overlaps with the position, then either it, or one of its + // children must be the nearest node before the position. So we can just + // recurse into this child to see if we can find something better. + if (position < child.end) { + // The nearest node is either this child, or one of the children inside + // of it. We've already marked this child as the best so far. Recurse + // in case one of the children is better. + forEachChild(child, visit); + // Once we look at the children of this node, then there's no need to + // continue any further. + return true; + } + else { + ts.Debug.assert(child.end <= position); + // The child ends entirely before this position. Say you have the following + // (where $ is the position) + // + // ? $ : <...> <...> + // + // We would want to find the nearest preceding node in "complex expr 2". + // To support that, we keep track of this node, and once we're done searching + // for a best node, we recurse down this node to see if we can find a good + // result in it. + // + // This approach allows us to quickly skip over nodes that are entirely + // before the position, while still allowing us to find any nodes in the + // last one that might be what we want. + lastNodeEntirelyBeforePosition = child; + } + } + else { + ts.Debug.assert(child.pos > position); + // We're now at a node that is entirely past the position we're searching for. + // This node (and all following nodes) could never contribute to the result, + // so just skip them by returning 'true' here. + return true; + } + } + } + function checkChangeRange(sourceFile, newText, textChangeRange, aggressiveChecks) { + var oldText = sourceFile.text; + if (textChangeRange) { + ts.Debug.assert((oldText.length - textChangeRange.span.length + textChangeRange.newLength) === newText.length); + if (aggressiveChecks || ts.Debug.shouldAssert(3 /* VeryAggressive */)) { + var oldTextPrefix = oldText.substr(0, textChangeRange.span.start); + var newTextPrefix = newText.substr(0, textChangeRange.span.start); + ts.Debug.assert(oldTextPrefix === newTextPrefix); + var oldTextSuffix = oldText.substring(ts.textSpanEnd(textChangeRange.span), oldText.length); + var newTextSuffix = newText.substring(ts.textSpanEnd(ts.textChangeRangeNewSpan(textChangeRange)), newText.length); + ts.Debug.assert(oldTextSuffix === newTextSuffix); + } + } + } + function createSyntaxCursor(sourceFile) { + var currentArray = sourceFile.statements; + var currentArrayIndex = 0; + ts.Debug.assert(currentArrayIndex < currentArray.length); + var current = currentArray[currentArrayIndex]; + var lastQueriedPosition = -1 /* Value */; + return { + currentNode: function (position) { + // Only compute the current node if the position is different than the last time + // we were asked. The parser commonly asks for the node at the same position + // twice. Once to know if can read an appropriate list element at a certain point, + // and then to actually read and consume the node. + if (position !== lastQueriedPosition) { + // Much of the time the parser will need the very next node in the array that + // we just returned a node from.So just simply check for that case and move + // forward in the array instead of searching for the node again. + if (current && current.end === position && currentArrayIndex < (currentArray.length - 1)) { + currentArrayIndex++; + current = currentArray[currentArrayIndex]; + } + // If we don't have a node, or the node we have isn't in the right position, + // then try to find a viable node at the position requested. + if (!current || current.pos !== position) { + findHighestListElementThatStartsAtPosition(position); + } + } + // Cache this query so that we don't do any extra work if the parser calls back + // into us. Note: this is very common as the parser will make pairs of calls like + // 'isListElement -> parseListElement'. If we were unable to find a node when + // called with 'isListElement', we don't want to redo the work when parseListElement + // is called immediately after. + lastQueriedPosition = position; + // Either we don'd have a node, or we have a node at the position being asked for. + ts.Debug.assert(!current || current.pos === position); + return current; + } + }; + // Finds the highest element in the tree we can find that starts at the provided position. + // The element must be a direct child of some node list in the tree. This way after we + // return it, we can easily return its next sibling in the list. + function findHighestListElementThatStartsAtPosition(position) { + // Clear out any cached state about the last node we found. + currentArray = undefined; + currentArrayIndex = -1 /* Value */; + current = undefined; + // Recurse into the source file to find the highest node at this position. + forEachChild(sourceFile, visitNode, visitArray); + return; + function visitNode(node) { + if (position >= node.pos && position < node.end) { + // Position was within this node. Keep searching deeper to find the node. + forEachChild(node, visitNode, visitArray); + // don't proceed any further in the search. + return true; + } + // position wasn't in this node, have to keep searching. + return false; + } + function visitArray(array) { + if (position >= array.pos && position < array.end) { + // position was in this array. Search through this array to see if we find a + // viable element. + for (var i = 0; i < array.length; i++) { + var child = array[i]; + if (child) { + if (child.pos === position) { + // Found the right node. We're done. + currentArray = array; + currentArrayIndex = i; + current = child; + return true; + } + else { + if (child.pos < position && position < child.end) { + // Position in somewhere within this child. Search in it and + // stop searching in this array. + forEachChild(child, visitNode, visitArray); + return true; + } + } + } + } + } + // position wasn't in this array, have to keep searching. + return false; + } + } + } + var InvalidPosition; + (function (InvalidPosition) { + InvalidPosition[InvalidPosition["Value"] = -1] = "Value"; + })(InvalidPosition || (InvalidPosition = {})); + })(IncrementalParser || (IncrementalParser = {})); + /** @internal */ + function isDeclarationFileName(fileName) { + return ts.fileExtensionIs(fileName, ".d.ts" /* Dts */); + } + ts.isDeclarationFileName = isDeclarationFileName; + /*@internal*/ + function processCommentPragmas(context, sourceText) { + var pragmas = []; + for (var _i = 0, _a = ts.getLeadingCommentRanges(sourceText, 0) || ts.emptyArray; _i < _a.length; _i++) { + var range = _a[_i]; + var comment = sourceText.substring(range.pos, range.end); + extractPragmas(pragmas, range, comment); + } + context.pragmas = ts.createMap(); + for (var _b = 0, pragmas_1 = pragmas; _b < pragmas_1.length; _b++) { + var pragma = pragmas_1[_b]; + if (context.pragmas.has(pragma.name)) { + var currentValue = context.pragmas.get(pragma.name); + if (currentValue instanceof Array) { + currentValue.push(pragma.args); + } + else { + context.pragmas.set(pragma.name, [currentValue, pragma.args]); + } + continue; + } + context.pragmas.set(pragma.name, pragma.args); + } + } + ts.processCommentPragmas = processCommentPragmas; + /*@internal*/ + function processPragmasIntoFields(context, reportDiagnostic) { + context.checkJsDirective = undefined; + context.referencedFiles = []; + context.typeReferenceDirectives = []; + context.libReferenceDirectives = []; + context.amdDependencies = []; + context.hasNoDefaultLib = false; + context.pragmas.forEach(function (entryOrList, key) { + // TODO: The below should be strongly type-guarded and not need casts/explicit annotations, since entryOrList is related to + // key and key is constrained to a union; but it's not (see GH#21483 for at least partial fix) :( + switch (key) { + case "reference": { + var referencedFiles_1 = context.referencedFiles; + var typeReferenceDirectives_1 = context.typeReferenceDirectives; + var libReferenceDirectives_1 = context.libReferenceDirectives; + ts.forEach(ts.toArray(entryOrList), function (arg) { + var _a = arg.arguments, types = _a.types, lib = _a.lib, path = _a.path; + if (arg.arguments["no-default-lib"]) { + context.hasNoDefaultLib = true; + } + else if (types) { + typeReferenceDirectives_1.push({ pos: types.pos, end: types.end, fileName: types.value }); + } + else if (lib) { + libReferenceDirectives_1.push({ pos: lib.pos, end: lib.end, fileName: lib.value }); + } + else if (path) { + referencedFiles_1.push({ pos: path.pos, end: path.end, fileName: path.value }); + } + else { + reportDiagnostic(arg.range.pos, arg.range.end - arg.range.pos, ts.Diagnostics.Invalid_reference_directive_syntax); + } + }); + break; + } + case "amd-dependency": { + context.amdDependencies = ts.map(ts.toArray(entryOrList), function (x) { return ({ name: x.arguments.name, path: x.arguments.path }); }); + break; + } + case "amd-module": { + if (entryOrList instanceof Array) { + for (var _i = 0, entryOrList_1 = entryOrList; _i < entryOrList_1.length; _i++) { + var entry = entryOrList_1[_i]; + if (context.moduleName) { + // TODO: It's probably fine to issue this diagnostic on all instances of the pragma + reportDiagnostic(entry.range.pos, entry.range.end - entry.range.pos, ts.Diagnostics.An_AMD_module_cannot_have_multiple_name_assignments); + } + context.moduleName = entry.arguments.name; + } + } + else { + context.moduleName = entryOrList.arguments.name; + } + break; + } + case "ts-nocheck": + case "ts-check": { + // _last_ of either nocheck or check in a file is the "winner" + ts.forEach(ts.toArray(entryOrList), function (entry) { + if (!context.checkJsDirective || entry.range.pos > context.checkJsDirective.pos) { + context.checkJsDirective = { + enabled: key === "ts-check", + end: entry.range.end, + pos: entry.range.pos + }; + } + }); + break; + } + case "jsx": return; // Accessed directly + default: ts.Debug.fail("Unhandled pragma kind"); // Can this be made into an assertNever in the future? + } + }); + } + ts.processPragmasIntoFields = processPragmasIntoFields; + var namedArgRegExCache = ts.createMap(); + function getNamedArgRegEx(name) { + if (namedArgRegExCache.has(name)) { + return namedArgRegExCache.get(name); + } + var result = new RegExp("(\\s" + name + "\\s*=\\s*)('|\")(.+?)\\2", "im"); + namedArgRegExCache.set(name, result); + return result; + } + var tripleSlashXMLCommentStartRegEx = /^\/\/\/\s*<(\S+)\s.*?\/>/im; + var singleLinePragmaRegEx = /^\/\/\/?\s*@(\S+)\s*(.*)\s*$/im; + function extractPragmas(pragmas, range, text) { + var tripleSlash = range.kind === 2 /* SingleLineCommentTrivia */ && tripleSlashXMLCommentStartRegEx.exec(text); + if (tripleSlash) { + var name = tripleSlash[1].toLowerCase(); // Technically unsafe cast, but we do it so the below check to make it safe typechecks + var pragma = ts.commentPragmas[name]; + if (!pragma || !(pragma.kind & 1 /* TripleSlashXML */)) { + return; + } + if (pragma.args) { + var argument = {}; + for (var _i = 0, _a = pragma.args; _i < _a.length; _i++) { + var arg = _a[_i]; + var matcher = getNamedArgRegEx(arg.name); + var matchResult = matcher.exec(text); + if (!matchResult && !arg.optional) { + return; // Missing required argument, don't parse + } + else if (matchResult) { + if (arg.captureSpan) { + var startPos = range.pos + matchResult.index + matchResult[1].length + matchResult[2].length; + argument[arg.name] = { + value: matchResult[3], + pos: startPos, + end: startPos + matchResult[3].length + }; + } + else { + argument[arg.name] = matchResult[3]; + } + } + } + pragmas.push({ name: name, args: { arguments: argument, range: range } }); + } + else { + pragmas.push({ name: name, args: { arguments: {}, range: range } }); + } + return; + } + var singleLine = range.kind === 2 /* SingleLineCommentTrivia */ && singleLinePragmaRegEx.exec(text); + if (singleLine) { + return addPragmaForMatch(pragmas, range, 2 /* SingleLine */, singleLine); + } + if (range.kind === 3 /* MultiLineCommentTrivia */) { + var multiLinePragmaRegEx = /\s*@(\S+)\s*(.*)\s*$/gim; // Defined inline since it uses the "g" flag, which keeps a persistent index (for iterating) + var multiLineMatch = void 0; + while (multiLineMatch = multiLinePragmaRegEx.exec(text)) { + addPragmaForMatch(pragmas, range, 4 /* MultiLine */, multiLineMatch); + } + } + } + function addPragmaForMatch(pragmas, range, kind, match) { + if (!match) + return; + var name = match[1].toLowerCase(); // Technically unsafe cast, but we do it so they below check to make it safe typechecks + var pragma = ts.commentPragmas[name]; + if (!pragma || !(pragma.kind & kind)) { + return; + } + var args = match[2]; // Split on spaces and match up positionally with definition + var argument = getNamedPragmaArguments(pragma, args); + if (argument === "fail") + return; // Missing required argument, fail to parse it + pragmas.push({ name: name, args: { arguments: argument, range: range } }); + return; + } + function getNamedPragmaArguments(pragma, text) { + if (!text) + return {}; + if (!pragma.args) + return {}; + var args = text.split(/\s+/); + var argMap = {}; + for (var i = 0; i < pragma.args.length; i++) { + var argument = pragma.args[i]; + if (!args[i] && !argument.optional) { + return "fail"; + } + if (argument.captureSpan) { + return ts.Debug.fail("Capture spans not yet implemented for non-xml pragmas"); + } + argMap[argument.name] = args[i]; + } + return argMap; + } + /** @internal */ + function tagNamesAreEquivalent(lhs, rhs) { + if (lhs.kind !== rhs.kind) { + return false; + } + if (lhs.kind === 75 /* Identifier */) { + return lhs.escapedText === rhs.escapedText; + } + if (lhs.kind === 104 /* ThisKeyword */) { + return true; + } + // If we are at this statement then we must have PropertyAccessExpression and because tag name in Jsx element can only + // take forms of JsxTagNameExpression which includes an identifier, "this" expression, or another propertyAccessExpression + // it is safe to case the expression property as such. See parseJsxElementName for how we parse tag name in Jsx element + return lhs.name.escapedText === rhs.name.escapedText && + tagNamesAreEquivalent(lhs.expression, rhs.expression); + } + ts.tagNamesAreEquivalent = tagNamesAreEquivalent; +})(ts || (ts = {})); +var ts; +(function (ts) { + /* @internal */ + ts.compileOnSaveCommandLineOption = { name: "compileOnSave", type: "boolean" }; + // NOTE: The order here is important to default lib ordering as entries will have the same + // order in the generated program (see `getDefaultLibPriority` in program.ts). This + // order also affects overload resolution when a type declared in one lib is + // augmented in another lib. + var libEntries = [ + // JavaScript only + ["es5", "lib.es5.d.ts"], + ["es6", "lib.es2015.d.ts"], + ["es2015", "lib.es2015.d.ts"], + ["es7", "lib.es2016.d.ts"], + ["es2016", "lib.es2016.d.ts"], + ["es2017", "lib.es2017.d.ts"], + ["es2018", "lib.es2018.d.ts"], + ["es2019", "lib.es2019.d.ts"], + ["es2020", "lib.es2020.d.ts"], + ["esnext", "lib.esnext.d.ts"], + // Host only + ["dom", "lib.dom.d.ts"], + ["dom.iterable", "lib.dom.iterable.d.ts"], + ["webworker", "lib.webworker.d.ts"], + ["webworker.importscripts", "lib.webworker.importscripts.d.ts"], + ["scripthost", "lib.scripthost.d.ts"], + // ES2015 Or ESNext By-feature options + ["es2015.core", "lib.es2015.core.d.ts"], + ["es2015.collection", "lib.es2015.collection.d.ts"], + ["es2015.generator", "lib.es2015.generator.d.ts"], + ["es2015.iterable", "lib.es2015.iterable.d.ts"], + ["es2015.promise", "lib.es2015.promise.d.ts"], + ["es2015.proxy", "lib.es2015.proxy.d.ts"], + ["es2015.reflect", "lib.es2015.reflect.d.ts"], + ["es2015.symbol", "lib.es2015.symbol.d.ts"], + ["es2015.symbol.wellknown", "lib.es2015.symbol.wellknown.d.ts"], + ["es2016.array.include", "lib.es2016.array.include.d.ts"], + ["es2017.object", "lib.es2017.object.d.ts"], + ["es2017.sharedmemory", "lib.es2017.sharedmemory.d.ts"], + ["es2017.string", "lib.es2017.string.d.ts"], + ["es2017.intl", "lib.es2017.intl.d.ts"], + ["es2017.typedarrays", "lib.es2017.typedarrays.d.ts"], + ["es2018.asyncgenerator", "lib.es2018.asyncgenerator.d.ts"], + ["es2018.asynciterable", "lib.es2018.asynciterable.d.ts"], + ["es2018.intl", "lib.es2018.intl.d.ts"], + ["es2018.promise", "lib.es2018.promise.d.ts"], + ["es2018.regexp", "lib.es2018.regexp.d.ts"], + ["es2019.array", "lib.es2019.array.d.ts"], + ["es2019.object", "lib.es2019.object.d.ts"], + ["es2019.string", "lib.es2019.string.d.ts"], + ["es2019.symbol", "lib.es2019.symbol.d.ts"], + ["es2020.bigint", "lib.es2020.bigint.d.ts"], + ["es2020.promise", "lib.es2020.promise.d.ts"], + ["es2020.string", "lib.es2020.string.d.ts"], + ["es2020.symbol.wellknown", "lib.es2020.symbol.wellknown.d.ts"], + ["esnext.array", "lib.es2019.array.d.ts"], + ["esnext.symbol", "lib.es2019.symbol.d.ts"], + ["esnext.asynciterable", "lib.es2018.asynciterable.d.ts"], + ["esnext.intl", "lib.esnext.intl.d.ts"], + ["esnext.bigint", "lib.es2020.bigint.d.ts"], + ["esnext.string", "lib.esnext.string.d.ts"], + ["esnext.promise", "lib.esnext.promise.d.ts"] + ]; + /** + * An array of supported "lib" reference file names used to determine the order for inclusion + * when referenced, as well as for spelling suggestions. This ensures the correct ordering for + * overload resolution when a type declared in one lib is extended by another. + */ + /* @internal */ + ts.libs = libEntries.map(function (entry) { return entry[0]; }); + /** + * A map of lib names to lib files. This map is used both for parsing the "lib" command line + * option as well as for resolving lib reference directives. + */ + /* @internal */ + ts.libMap = ts.createMapFromEntries(libEntries); + // Watch related options + /* @internal */ + ts.optionsForWatch = [ + { + name: "watchFile", + type: ts.createMapFromTemplate({ + fixedpollinginterval: ts.WatchFileKind.FixedPollingInterval, + prioritypollinginterval: ts.WatchFileKind.PriorityPollingInterval, + dynamicprioritypolling: ts.WatchFileKind.DynamicPriorityPolling, + usefsevents: ts.WatchFileKind.UseFsEvents, + usefseventsonparentdirectory: ts.WatchFileKind.UseFsEventsOnParentDirectory, + }), + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Specify_strategy_for_watching_file_Colon_FixedPollingInterval_default_PriorityPollingInterval_DynamicPriorityPolling_UseFsEvents_UseFsEventsOnParentDirectory, + }, + { + name: "watchDirectory", + type: ts.createMapFromTemplate({ + usefsevents: ts.WatchDirectoryKind.UseFsEvents, + fixedpollinginterval: ts.WatchDirectoryKind.FixedPollingInterval, + dynamicprioritypolling: ts.WatchDirectoryKind.DynamicPriorityPolling, + }), + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Specify_strategy_for_watching_directory_on_platforms_that_don_t_support_recursive_watching_natively_Colon_UseFsEvents_default_FixedPollingInterval_DynamicPriorityPolling, + }, + { + name: "fallbackPolling", + type: ts.createMapFromTemplate({ + fixedinterval: ts.PollingWatchKind.FixedInterval, + priorityinterval: ts.PollingWatchKind.PriorityInterval, + dynamicpriority: ts.PollingWatchKind.DynamicPriority, + }), + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Specify_strategy_for_creating_a_polling_watch_when_it_fails_to_create_using_file_system_events_Colon_FixedInterval_default_PriorityInterval_DynamicPriority, + }, + { + name: "synchronousWatchDirectory", + type: "boolean", + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Synchronously_call_callbacks_and_update_the_state_of_directory_watchers_on_platforms_that_don_t_support_recursive_watching_natively, + }, + ]; + /* @internal */ + ts.commonOptionsWithBuild = [ + { + name: "help", + shortName: "h", + type: "boolean", + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Command_line_Options, + description: ts.Diagnostics.Print_this_message, + }, + { + name: "help", + shortName: "?", + type: "boolean" + }, + { + name: "watch", + shortName: "w", + type: "boolean", + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Command_line_Options, + description: ts.Diagnostics.Watch_input_files, + }, + { + name: "preserveWatchOutput", + type: "boolean", + showInSimplifiedHelpView: false, + category: ts.Diagnostics.Command_line_Options, + description: ts.Diagnostics.Whether_to_keep_outdated_console_output_in_watch_mode_instead_of_clearing_the_screen, + }, + { + name: "listFiles", + type: "boolean", + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Print_names_of_files_part_of_the_compilation + }, + { + name: "listEmittedFiles", + type: "boolean", + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Print_names_of_generated_files_part_of_the_compilation + }, + { + name: "pretty", + type: "boolean", + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Command_line_Options, + description: ts.Diagnostics.Stylize_errors_and_messages_using_color_and_context_experimental + }, + { + name: "traceResolution", + type: "boolean", + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Enable_tracing_of_the_name_resolution_process + }, + { + name: "diagnostics", + type: "boolean", + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Show_diagnostic_information + }, + { + name: "extendedDiagnostics", + type: "boolean", + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Show_verbose_diagnostic_information + }, + { + name: "generateCpuProfile", + type: "string", + isFilePath: true, + paramType: ts.Diagnostics.FILE_OR_DIRECTORY, + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Generates_a_CPU_profile + }, + { + name: "incremental", + shortName: "i", + type: "boolean", + category: ts.Diagnostics.Basic_Options, + description: ts.Diagnostics.Enable_incremental_compilation, + transpileOptionValue: undefined + }, + { + name: "assumeChangesOnlyAffectDirectDependencies", + type: "boolean", + affectsSemanticDiagnostics: true, + affectsEmit: true, + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Have_recompiles_in_incremental_and_watch_assume_that_changes_within_a_file_will_only_affect_files_directly_depending_on_it + }, + { + name: "locale", + type: "string", + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.The_locale_used_when_displaying_messages_to_the_user_e_g_en_us + }, + ]; + /* @internal */ + ts.optionDeclarations = __spreadArrays(ts.commonOptionsWithBuild, [ + { + name: "all", + type: "boolean", + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Command_line_Options, + description: ts.Diagnostics.Show_all_compiler_options, + }, + { + name: "version", + shortName: "v", + type: "boolean", + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Command_line_Options, + description: ts.Diagnostics.Print_the_compiler_s_version, + }, + { + name: "init", + type: "boolean", + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Command_line_Options, + description: ts.Diagnostics.Initializes_a_TypeScript_project_and_creates_a_tsconfig_json_file, + }, + { + name: "project", + shortName: "p", + type: "string", + isFilePath: true, + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Command_line_Options, + paramType: ts.Diagnostics.FILE_OR_DIRECTORY, + description: ts.Diagnostics.Compile_the_project_given_the_path_to_its_configuration_file_or_to_a_folder_with_a_tsconfig_json, + }, + { + name: "build", + type: "boolean", + shortName: "b", + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Command_line_Options, + description: ts.Diagnostics.Build_one_or_more_projects_and_their_dependencies_if_out_of_date + }, + { + name: "showConfig", + type: "boolean", + category: ts.Diagnostics.Command_line_Options, + isCommandLineOnly: true, + description: ts.Diagnostics.Print_the_final_configuration_instead_of_building + }, + { + name: "listFilesOnly", + type: "boolean", + category: ts.Diagnostics.Command_line_Options, + affectsSemanticDiagnostics: true, + affectsEmit: true, + isCommandLineOnly: true, + description: ts.Diagnostics.Print_names_of_files_that_are_part_of_the_compilation_and_then_stop_processing + }, + // Basic + { + name: "target", + shortName: "t", + type: ts.createMapFromTemplate({ + es3: 0 /* ES3 */, + es5: 1 /* ES5 */, + es6: 2 /* ES2015 */, + es2015: 2 /* ES2015 */, + es2016: 3 /* ES2016 */, + es2017: 4 /* ES2017 */, + es2018: 5 /* ES2018 */, + es2019: 6 /* ES2019 */, + es2020: 7 /* ES2020 */, + esnext: 99 /* ESNext */, + }), + affectsSourceFile: true, + affectsModuleResolution: true, + affectsEmit: true, + paramType: ts.Diagnostics.VERSION, + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Basic_Options, + description: ts.Diagnostics.Specify_ECMAScript_target_version_Colon_ES3_default_ES5_ES2015_ES2016_ES2017_ES2018_ES2019_ES2020_or_ESNEXT, + }, + { + name: "module", + shortName: "m", + type: ts.createMapFromTemplate({ + none: ts.ModuleKind.None, + commonjs: ts.ModuleKind.CommonJS, + amd: ts.ModuleKind.AMD, + system: ts.ModuleKind.System, + umd: ts.ModuleKind.UMD, + es6: ts.ModuleKind.ES2015, + es2015: ts.ModuleKind.ES2015, + es2020: ts.ModuleKind.ES2020, + esnext: ts.ModuleKind.ESNext + }), + affectsModuleResolution: true, + affectsEmit: true, + paramType: ts.Diagnostics.KIND, + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Basic_Options, + description: ts.Diagnostics.Specify_module_code_generation_Colon_none_commonjs_amd_system_umd_es2015_es2020_or_ESNext, + }, + { + name: "lib", + type: "list", + element: { + name: "lib", + type: ts.libMap + }, + affectsModuleResolution: true, + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Basic_Options, + description: ts.Diagnostics.Specify_library_files_to_be_included_in_the_compilation, + transpileOptionValue: undefined + }, + { + name: "allowJs", + type: "boolean", + affectsModuleResolution: true, + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Basic_Options, + description: ts.Diagnostics.Allow_javascript_files_to_be_compiled + }, + { + name: "checkJs", + type: "boolean", + category: ts.Diagnostics.Basic_Options, + description: ts.Diagnostics.Report_errors_in_js_files + }, + { + name: "jsx", + type: ts.createMapFromTemplate({ + "preserve": 1 /* Preserve */, + "react-native": 3 /* ReactNative */, + "react": 2 /* React */ + }), + affectsSourceFile: true, + paramType: ts.Diagnostics.KIND, + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Basic_Options, + description: ts.Diagnostics.Specify_JSX_code_generation_Colon_preserve_react_native_or_react, + }, + { + name: "declaration", + shortName: "d", + type: "boolean", + affectsEmit: true, + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Basic_Options, + description: ts.Diagnostics.Generates_corresponding_d_ts_file, + transpileOptionValue: undefined + }, + { + name: "declarationMap", + type: "boolean", + affectsEmit: true, + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Basic_Options, + description: ts.Diagnostics.Generates_a_sourcemap_for_each_corresponding_d_ts_file, + transpileOptionValue: undefined + }, + { + name: "emitDeclarationOnly", + type: "boolean", + affectsEmit: true, + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Only_emit_d_ts_declaration_files, + transpileOptionValue: undefined + }, + { + name: "sourceMap", + type: "boolean", + affectsEmit: true, + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Basic_Options, + description: ts.Diagnostics.Generates_corresponding_map_file, + }, + { + name: "outFile", + type: "string", + affectsEmit: true, + isFilePath: true, + paramType: ts.Diagnostics.FILE, + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Basic_Options, + description: ts.Diagnostics.Concatenate_and_emit_output_to_single_file, + transpileOptionValue: undefined + }, + { + name: "outDir", + type: "string", + affectsEmit: true, + isFilePath: true, + paramType: ts.Diagnostics.DIRECTORY, + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Basic_Options, + description: ts.Diagnostics.Redirect_output_structure_to_the_directory, + }, + { + name: "rootDir", + type: "string", + affectsEmit: true, + isFilePath: true, + paramType: ts.Diagnostics.LOCATION, + category: ts.Diagnostics.Basic_Options, + description: ts.Diagnostics.Specify_the_root_directory_of_input_files_Use_to_control_the_output_directory_structure_with_outDir, + }, + { + name: "composite", + type: "boolean", + affectsEmit: true, + isTSConfigOnly: true, + category: ts.Diagnostics.Basic_Options, + description: ts.Diagnostics.Enable_project_compilation, + transpileOptionValue: undefined + }, + { + name: "tsBuildInfoFile", + type: "string", + affectsEmit: true, + isFilePath: true, + paramType: ts.Diagnostics.FILE, + category: ts.Diagnostics.Basic_Options, + description: ts.Diagnostics.Specify_file_to_store_incremental_compilation_information, + transpileOptionValue: undefined + }, + { + name: "removeComments", + type: "boolean", + affectsEmit: true, + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Basic_Options, + description: ts.Diagnostics.Do_not_emit_comments_to_output, + }, + { + name: "noEmit", + type: "boolean", + affectsEmit: true, + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Basic_Options, + description: ts.Diagnostics.Do_not_emit_outputs, + transpileOptionValue: undefined + }, + { + name: "importHelpers", + type: "boolean", + affectsEmit: true, + category: ts.Diagnostics.Basic_Options, + description: ts.Diagnostics.Import_emit_helpers_from_tslib + }, + { + name: "importsNotUsedAsValues", + type: ts.createMapFromTemplate({ + remove: 0 /* Remove */, + preserve: 1 /* Preserve */, + error: 2 /* Error */ + }), + affectsEmit: true, + affectsSemanticDiagnostics: true, + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Specify_emit_Slashchecking_behavior_for_imports_that_are_only_used_for_types + }, + { + name: "downlevelIteration", + type: "boolean", + affectsEmit: true, + category: ts.Diagnostics.Basic_Options, + description: ts.Diagnostics.Provide_full_support_for_iterables_in_for_of_spread_and_destructuring_when_targeting_ES5_or_ES3 + }, + { + name: "isolatedModules", + type: "boolean", + category: ts.Diagnostics.Basic_Options, + description: ts.Diagnostics.Transpile_each_file_as_a_separate_module_similar_to_ts_transpileModule, + transpileOptionValue: true + }, + // Strict Type Checks + { + name: "strict", + type: "boolean", + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Strict_Type_Checking_Options, + description: ts.Diagnostics.Enable_all_strict_type_checking_options + }, + { + name: "noImplicitAny", + type: "boolean", + affectsSemanticDiagnostics: true, + strictFlag: true, + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Strict_Type_Checking_Options, + description: ts.Diagnostics.Raise_error_on_expressions_and_declarations_with_an_implied_any_type + }, + { + name: "strictNullChecks", + type: "boolean", + affectsSemanticDiagnostics: true, + strictFlag: true, + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Strict_Type_Checking_Options, + description: ts.Diagnostics.Enable_strict_null_checks + }, + { + name: "strictFunctionTypes", + type: "boolean", + affectsSemanticDiagnostics: true, + strictFlag: true, + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Strict_Type_Checking_Options, + description: ts.Diagnostics.Enable_strict_checking_of_function_types + }, + { + name: "strictBindCallApply", + type: "boolean", + strictFlag: true, + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Strict_Type_Checking_Options, + description: ts.Diagnostics.Enable_strict_bind_call_and_apply_methods_on_functions + }, + { + name: "strictPropertyInitialization", + type: "boolean", + affectsSemanticDiagnostics: true, + strictFlag: true, + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Strict_Type_Checking_Options, + description: ts.Diagnostics.Enable_strict_checking_of_property_initialization_in_classes + }, + { + name: "noImplicitThis", + type: "boolean", + affectsSemanticDiagnostics: true, + strictFlag: true, + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Strict_Type_Checking_Options, + description: ts.Diagnostics.Raise_error_on_this_expressions_with_an_implied_any_type, + }, + { + name: "alwaysStrict", + type: "boolean", + affectsSourceFile: true, + strictFlag: true, + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Strict_Type_Checking_Options, + description: ts.Diagnostics.Parse_in_strict_mode_and_emit_use_strict_for_each_source_file + }, + // Additional Checks + { + name: "noUnusedLocals", + type: "boolean", + affectsSemanticDiagnostics: true, + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Additional_Checks, + description: ts.Diagnostics.Report_errors_on_unused_locals, + }, + { + name: "noUnusedParameters", + type: "boolean", + affectsSemanticDiagnostics: true, + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Additional_Checks, + description: ts.Diagnostics.Report_errors_on_unused_parameters, + }, + { + name: "noImplicitReturns", + type: "boolean", + affectsSemanticDiagnostics: true, + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Additional_Checks, + description: ts.Diagnostics.Report_error_when_not_all_code_paths_in_function_return_a_value + }, + { + name: "noFallthroughCasesInSwitch", + type: "boolean", + affectsBindDiagnostics: true, + affectsSemanticDiagnostics: true, + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Additional_Checks, + description: ts.Diagnostics.Report_errors_for_fallthrough_cases_in_switch_statement + }, + // Module Resolution + { + name: "moduleResolution", + type: ts.createMapFromTemplate({ + node: ts.ModuleResolutionKind.NodeJs, + classic: ts.ModuleResolutionKind.Classic, + }), + affectsModuleResolution: true, + paramType: ts.Diagnostics.STRATEGY, + category: ts.Diagnostics.Module_Resolution_Options, + description: ts.Diagnostics.Specify_module_resolution_strategy_Colon_node_Node_js_or_classic_TypeScript_pre_1_6, + }, + { + name: "baseUrl", + type: "string", + affectsModuleResolution: true, + isFilePath: true, + category: ts.Diagnostics.Module_Resolution_Options, + description: ts.Diagnostics.Base_directory_to_resolve_non_absolute_module_names + }, + { + // this option can only be specified in tsconfig.json + // use type = object to copy the value as-is + name: "paths", + type: "object", + affectsModuleResolution: true, + isTSConfigOnly: true, + category: ts.Diagnostics.Module_Resolution_Options, + description: ts.Diagnostics.A_series_of_entries_which_re_map_imports_to_lookup_locations_relative_to_the_baseUrl, + transpileOptionValue: undefined + }, + { + // this option can only be specified in tsconfig.json + // use type = object to copy the value as-is + name: "rootDirs", + type: "list", + isTSConfigOnly: true, + element: { + name: "rootDirs", + type: "string", + isFilePath: true + }, + affectsModuleResolution: true, + category: ts.Diagnostics.Module_Resolution_Options, + description: ts.Diagnostics.List_of_root_folders_whose_combined_content_represents_the_structure_of_the_project_at_runtime, + transpileOptionValue: undefined + }, + { + name: "typeRoots", + type: "list", + element: { + name: "typeRoots", + type: "string", + isFilePath: true + }, + affectsModuleResolution: true, + category: ts.Diagnostics.Module_Resolution_Options, + description: ts.Diagnostics.List_of_folders_to_include_type_definitions_from + }, + { + name: "types", + type: "list", + element: { + name: "types", + type: "string" + }, + affectsModuleResolution: true, + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Module_Resolution_Options, + description: ts.Diagnostics.Type_declaration_files_to_be_included_in_compilation, + transpileOptionValue: undefined + }, + { + name: "allowSyntheticDefaultImports", + type: "boolean", + affectsSemanticDiagnostics: true, + category: ts.Diagnostics.Module_Resolution_Options, + description: ts.Diagnostics.Allow_default_imports_from_modules_with_no_default_export_This_does_not_affect_code_emit_just_typechecking + }, + { + name: "esModuleInterop", + type: "boolean", + affectsSemanticDiagnostics: true, + affectsEmit: true, + showInSimplifiedHelpView: true, + category: ts.Diagnostics.Module_Resolution_Options, + description: ts.Diagnostics.Enables_emit_interoperability_between_CommonJS_and_ES_Modules_via_creation_of_namespace_objects_for_all_imports_Implies_allowSyntheticDefaultImports + }, + { + name: "preserveSymlinks", + type: "boolean", + category: ts.Diagnostics.Module_Resolution_Options, + description: ts.Diagnostics.Do_not_resolve_the_real_path_of_symlinks, + }, + { + name: "allowUmdGlobalAccess", + type: "boolean", + affectsSemanticDiagnostics: true, + category: ts.Diagnostics.Module_Resolution_Options, + description: ts.Diagnostics.Allow_accessing_UMD_globals_from_modules, + }, + // Source Maps + { + name: "sourceRoot", + type: "string", + affectsEmit: true, + paramType: ts.Diagnostics.LOCATION, + category: ts.Diagnostics.Source_Map_Options, + description: ts.Diagnostics.Specify_the_location_where_debugger_should_locate_TypeScript_files_instead_of_source_locations, + }, + { + name: "mapRoot", + type: "string", + affectsEmit: true, + paramType: ts.Diagnostics.LOCATION, + category: ts.Diagnostics.Source_Map_Options, + description: ts.Diagnostics.Specify_the_location_where_debugger_should_locate_map_files_instead_of_generated_locations, + }, + { + name: "inlineSourceMap", + type: "boolean", + affectsEmit: true, + category: ts.Diagnostics.Source_Map_Options, + description: ts.Diagnostics.Emit_a_single_file_with_source_maps_instead_of_having_a_separate_file + }, + { + name: "inlineSources", + type: "boolean", + affectsEmit: true, + category: ts.Diagnostics.Source_Map_Options, + description: ts.Diagnostics.Emit_the_source_alongside_the_sourcemaps_within_a_single_file_requires_inlineSourceMap_or_sourceMap_to_be_set + }, + // Experimental + { + name: "experimentalDecorators", + type: "boolean", + affectsSemanticDiagnostics: true, + category: ts.Diagnostics.Experimental_Options, + description: ts.Diagnostics.Enables_experimental_support_for_ES7_decorators + }, + { + name: "emitDecoratorMetadata", + type: "boolean", + affectsSemanticDiagnostics: true, + affectsEmit: true, + category: ts.Diagnostics.Experimental_Options, + description: ts.Diagnostics.Enables_experimental_support_for_emitting_type_metadata_for_decorators + }, + // Advanced + { + name: "jsxFactory", + type: "string", + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Specify_the_JSX_factory_function_to_use_when_targeting_react_JSX_emit_e_g_React_createElement_or_h + }, + { + name: "resolveJsonModule", + type: "boolean", + affectsModuleResolution: true, + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Include_modules_imported_with_json_extension + }, + { + name: "out", + type: "string", + affectsEmit: true, + isFilePath: false, + // for correct behaviour, please use outFile + category: ts.Diagnostics.Advanced_Options, + paramType: ts.Diagnostics.FILE, + description: ts.Diagnostics.Deprecated_Use_outFile_instead_Concatenate_and_emit_output_to_single_file, + transpileOptionValue: undefined + }, + { + name: "reactNamespace", + type: "string", + affectsEmit: true, + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Deprecated_Use_jsxFactory_instead_Specify_the_object_invoked_for_createElement_when_targeting_react_JSX_emit + }, + { + name: "skipDefaultLibCheck", + type: "boolean", + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Deprecated_Use_skipLibCheck_instead_Skip_type_checking_of_default_library_declaration_files + }, + { + name: "charset", + type: "string", + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.The_character_set_of_the_input_files + }, + { + name: "emitBOM", + type: "boolean", + affectsEmit: true, + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Emit_a_UTF_8_Byte_Order_Mark_BOM_in_the_beginning_of_output_files + }, + { + name: "newLine", + type: ts.createMapFromTemplate({ + crlf: 0 /* CarriageReturnLineFeed */, + lf: 1 /* LineFeed */ + }), + affectsEmit: true, + paramType: ts.Diagnostics.NEWLINE, + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Specify_the_end_of_line_sequence_to_be_used_when_emitting_files_Colon_CRLF_dos_or_LF_unix, + }, + { + name: "noErrorTruncation", + type: "boolean", + affectsSemanticDiagnostics: true, + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Do_not_truncate_error_messages + }, + { + name: "noLib", + type: "boolean", + affectsModuleResolution: true, + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Do_not_include_the_default_library_file_lib_d_ts, + // We are not returning a sourceFile for lib file when asked by the program, + // so pass --noLib to avoid reporting a file not found error. + transpileOptionValue: true + }, + { + name: "noResolve", + type: "boolean", + affectsModuleResolution: true, + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Do_not_add_triple_slash_references_or_imported_modules_to_the_list_of_compiled_files, + // We are not doing a full typecheck, we are not resolving the whole context, + // so pass --noResolve to avoid reporting missing file errors. + transpileOptionValue: true + }, + { + name: "stripInternal", + type: "boolean", + affectsEmit: true, + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Do_not_emit_declarations_for_code_that_has_an_internal_annotation, + }, + { + name: "disableSizeLimit", + type: "boolean", + affectsSourceFile: true, + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Disable_size_limitations_on_JavaScript_projects + }, + { + name: "disableSourceOfProjectReferenceRedirect", + type: "boolean", + isTSConfigOnly: true, + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Disable_use_of_source_files_instead_of_declaration_files_from_referenced_projects + }, + { + name: "disableSolutionSearching", + type: "boolean", + isTSConfigOnly: true, + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Disable_solution_searching_for_this_project + }, + { + name: "noImplicitUseStrict", + type: "boolean", + affectsSemanticDiagnostics: true, + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Do_not_emit_use_strict_directives_in_module_output + }, + { + name: "noEmitHelpers", + type: "boolean", + affectsEmit: true, + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Do_not_generate_custom_helper_functions_like_extends_in_compiled_output + }, + { + name: "noEmitOnError", + type: "boolean", + affectsEmit: true, + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Do_not_emit_outputs_if_any_errors_were_reported, + transpileOptionValue: undefined + }, + { + name: "preserveConstEnums", + type: "boolean", + affectsEmit: true, + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Do_not_erase_const_enum_declarations_in_generated_code + }, + { + name: "declarationDir", + type: "string", + affectsEmit: true, + isFilePath: true, + paramType: ts.Diagnostics.DIRECTORY, + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Output_directory_for_generated_declaration_files, + transpileOptionValue: undefined + }, + { + name: "skipLibCheck", + type: "boolean", + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Skip_type_checking_of_declaration_files, + }, + { + name: "allowUnusedLabels", + type: "boolean", + affectsBindDiagnostics: true, + affectsSemanticDiagnostics: true, + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Do_not_report_errors_on_unused_labels + }, + { + name: "allowUnreachableCode", + type: "boolean", + affectsBindDiagnostics: true, + affectsSemanticDiagnostics: true, + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Do_not_report_errors_on_unreachable_code + }, + { + name: "suppressExcessPropertyErrors", + type: "boolean", + affectsSemanticDiagnostics: true, + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Suppress_excess_property_checks_for_object_literals, + }, + { + name: "suppressImplicitAnyIndexErrors", + type: "boolean", + affectsSemanticDiagnostics: true, + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Suppress_noImplicitAny_errors_for_indexing_objects_lacking_index_signatures, + }, + { + name: "forceConsistentCasingInFileNames", + type: "boolean", + affectsModuleResolution: true, + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Disallow_inconsistently_cased_references_to_the_same_file + }, + { + name: "maxNodeModuleJsDepth", + type: "number", + affectsModuleResolution: true, + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.The_maximum_dependency_depth_to_search_under_node_modules_and_load_JavaScript_files + }, + { + name: "noStrictGenericChecks", + type: "boolean", + affectsSemanticDiagnostics: true, + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Disable_strict_checking_of_generic_signatures_in_function_types, + }, + { + name: "useDefineForClassFields", + type: "boolean", + affectsSemanticDiagnostics: true, + affectsEmit: true, + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Emit_class_fields_with_Define_instead_of_Set, + }, + { + name: "keyofStringsOnly", + type: "boolean", + category: ts.Diagnostics.Advanced_Options, + description: ts.Diagnostics.Resolve_keyof_to_string_valued_property_names_only_no_numbers_or_symbols, + }, + { + // A list of plugins to load in the language service + name: "plugins", + type: "list", + isTSConfigOnly: true, + element: { + name: "plugin", + type: "object" + }, + description: ts.Diagnostics.List_of_language_service_plugins + }, + ]); + /* @internal */ + ts.semanticDiagnosticsOptionDeclarations = ts.optionDeclarations.filter(function (option) { return !!option.affectsSemanticDiagnostics; }); + /* @internal */ + ts.affectsEmitOptionDeclarations = ts.optionDeclarations.filter(function (option) { return !!option.affectsEmit; }); + /* @internal */ + ts.moduleResolutionOptionDeclarations = ts.optionDeclarations.filter(function (option) { return !!option.affectsModuleResolution; }); + /* @internal */ + ts.sourceFileAffectingCompilerOptions = ts.optionDeclarations.filter(function (option) { + return !!option.affectsSourceFile || !!option.affectsModuleResolution || !!option.affectsBindDiagnostics; + }); + /* @internal */ + ts.transpileOptionValueCompilerOptions = ts.optionDeclarations.filter(function (option) { + return ts.hasProperty(option, "transpileOptionValue"); + }); + /* @internal */ + ts.buildOpts = __spreadArrays(ts.commonOptionsWithBuild, [ + { + name: "verbose", + shortName: "v", + category: ts.Diagnostics.Command_line_Options, + description: ts.Diagnostics.Enable_verbose_logging, + type: "boolean" + }, + { + name: "dry", + shortName: "d", + category: ts.Diagnostics.Command_line_Options, + description: ts.Diagnostics.Show_what_would_be_built_or_deleted_if_specified_with_clean, + type: "boolean" + }, + { + name: "force", + shortName: "f", + category: ts.Diagnostics.Command_line_Options, + description: ts.Diagnostics.Build_all_projects_including_those_that_appear_to_be_up_to_date, + type: "boolean" + }, + { + name: "clean", + category: ts.Diagnostics.Command_line_Options, + description: ts.Diagnostics.Delete_the_outputs_of_all_projects, + type: "boolean" + } + ]); + /* @internal */ + ts.typeAcquisitionDeclarations = [ + { + /* @deprecated typingOptions.enableAutoDiscovery + * Use typeAcquisition.enable instead. + */ + name: "enableAutoDiscovery", + type: "boolean", + }, + { + name: "enable", + type: "boolean", + }, + { + name: "include", + type: "list", + element: { + name: "include", + type: "string" + } + }, + { + name: "exclude", + type: "list", + element: { + name: "exclude", + type: "string" + } + } + ]; + /*@internal*/ + function createOptionNameMap(optionDeclarations) { + var optionsNameMap = ts.createMap(); + var shortOptionNames = ts.createMap(); + ts.forEach(optionDeclarations, function (option) { + optionsNameMap.set(option.name.toLowerCase(), option); + if (option.shortName) { + shortOptionNames.set(option.shortName, option.name); + } + }); + return { optionsNameMap: optionsNameMap, shortOptionNames: shortOptionNames }; + } + ts.createOptionNameMap = createOptionNameMap; + var optionsNameMapCache; + /* @internal */ + function getOptionsNameMap() { + return optionsNameMapCache || (optionsNameMapCache = createOptionNameMap(ts.optionDeclarations)); + } + ts.getOptionsNameMap = getOptionsNameMap; + /* @internal */ + ts.defaultInitCompilerOptions = { + module: ts.ModuleKind.CommonJS, + target: 1 /* ES5 */, + strict: true, + esModuleInterop: true, + forceConsistentCasingInFileNames: true, + skipLibCheck: true + }; + /* @internal */ + function convertEnableAutoDiscoveryToEnable(typeAcquisition) { + // Convert deprecated typingOptions.enableAutoDiscovery to typeAcquisition.enable + if (typeAcquisition && typeAcquisition.enableAutoDiscovery !== undefined && typeAcquisition.enable === undefined) { + return { + enable: typeAcquisition.enableAutoDiscovery, + include: typeAcquisition.include || [], + exclude: typeAcquisition.exclude || [] + }; + } + return typeAcquisition; + } + ts.convertEnableAutoDiscoveryToEnable = convertEnableAutoDiscoveryToEnable; + /* @internal */ + function createCompilerDiagnosticForInvalidCustomType(opt) { + return createDiagnosticForInvalidCustomType(opt, ts.createCompilerDiagnostic); + } + ts.createCompilerDiagnosticForInvalidCustomType = createCompilerDiagnosticForInvalidCustomType; + function createDiagnosticForInvalidCustomType(opt, createDiagnostic) { + var namesOfType = ts.arrayFrom(opt.type.keys()).map(function (key) { return "'" + key + "'"; }).join(", "); + return createDiagnostic(ts.Diagnostics.Argument_for_0_option_must_be_Colon_1, "--" + opt.name, namesOfType); + } + /* @internal */ + function parseCustomTypeOption(opt, value, errors) { + return convertJsonOptionOfCustomType(opt, trimString(value || ""), errors); + } + ts.parseCustomTypeOption = parseCustomTypeOption; + /* @internal */ + function parseListTypeOption(opt, value, errors) { + if (value === void 0) { value = ""; } + value = trimString(value); + if (ts.startsWith(value, "-")) { + return undefined; + } + if (value === "") { + return []; + } + var values = value.split(","); + switch (opt.element.type) { + case "number": + return ts.map(values, parseInt); + case "string": + return ts.map(values, function (v) { return v || ""; }); + default: + return ts.mapDefined(values, function (v) { return parseCustomTypeOption(opt.element, v, errors); }); + } + } + ts.parseListTypeOption = parseListTypeOption; + function getOptionName(option) { + return option.name; + } + function createUnknownOptionError(unknownOption, diagnostics, createDiagnostics, unknownOptionErrorText) { + var possibleOption = ts.getSpellingSuggestion(unknownOption, diagnostics.optionDeclarations, getOptionName); + return possibleOption ? + createDiagnostics(diagnostics.unknownDidYouMeanDiagnostic, unknownOptionErrorText || unknownOption, possibleOption.name) : + createDiagnostics(diagnostics.unknownOptionDiagnostic, unknownOptionErrorText || unknownOption); + } + /*@internal*/ + function parseCommandLineWorker(diagnostics, commandLine, readFile) { + var options = {}; + var watchOptions; + var fileNames = []; + var errors = []; + parseStrings(commandLine); + return { + options: options, + watchOptions: watchOptions, + fileNames: fileNames, + errors: errors + }; + function parseStrings(args) { + var i = 0; + while (i < args.length) { + var s = args[i]; + i++; + if (s.charCodeAt(0) === 64 /* at */) { + parseResponseFile(s.slice(1)); + } + else if (s.charCodeAt(0) === 45 /* minus */) { + var inputOptionName = s.slice(s.charCodeAt(1) === 45 /* minus */ ? 2 : 1); + var opt = getOptionDeclarationFromName(diagnostics.getOptionsNameMap, inputOptionName, /*allowShort*/ true); + if (opt) { + i = parseOptionValue(args, i, diagnostics, opt, options, errors); + } + else { + var watchOpt = getOptionDeclarationFromName(watchOptionsDidYouMeanDiagnostics.getOptionsNameMap, inputOptionName, /*allowShort*/ true); + if (watchOpt) { + i = parseOptionValue(args, i, watchOptionsDidYouMeanDiagnostics, watchOpt, watchOptions || (watchOptions = {}), errors); + } + else { + errors.push(createUnknownOptionError(inputOptionName, diagnostics, ts.createCompilerDiagnostic, s)); + } + } + } + else { + fileNames.push(s); + } + } + } + function parseResponseFile(fileName) { + var text = tryReadFile(fileName, readFile || (function (fileName) { return ts.sys.readFile(fileName); })); + if (!ts.isString(text)) { + errors.push(text); + return; + } + var args = []; + var pos = 0; + while (true) { + while (pos < text.length && text.charCodeAt(pos) <= 32 /* space */) + pos++; + if (pos >= text.length) + break; + var start = pos; + if (text.charCodeAt(start) === 34 /* doubleQuote */) { + pos++; + while (pos < text.length && text.charCodeAt(pos) !== 34 /* doubleQuote */) + pos++; + if (pos < text.length) { + args.push(text.substring(start + 1, pos)); + pos++; + } + else { + errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Unterminated_quoted_string_in_response_file_0, fileName)); + } + } + else { + while (text.charCodeAt(pos) > 32 /* space */) + pos++; + args.push(text.substring(start, pos)); + } + } + parseStrings(args); + } + } + ts.parseCommandLineWorker = parseCommandLineWorker; + function parseOptionValue(args, i, diagnostics, opt, options, errors) { + if (opt.isTSConfigOnly) { + var optValue = args[i]; + if (optValue === "null") { + options[opt.name] = undefined; + i++; + } + else if (opt.type === "boolean") { + if (optValue === "false") { + options[opt.name] = false; + i++; + } + else { + if (optValue === "true") + i++; + errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Option_0_can_only_be_specified_in_tsconfig_json_file_or_set_to_false_or_null_on_command_line, opt.name)); + } + } + else { + errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Option_0_can_only_be_specified_in_tsconfig_json_file_or_set_to_null_on_command_line, opt.name)); + if (optValue && !ts.startsWith(optValue, "-")) + i++; + } + } + else { + // Check to see if no argument was provided (e.g. "--locale" is the last command-line argument). + if (!args[i] && opt.type !== "boolean") { + errors.push(ts.createCompilerDiagnostic(diagnostics.optionTypeMismatchDiagnostic, opt.name, getCompilerOptionValueTypeString(opt))); + } + if (args[i] !== "null") { + switch (opt.type) { + case "number": + options[opt.name] = parseInt(args[i]); + i++; + break; + case "boolean": + // boolean flag has optional value true, false, others + var optValue = args[i]; + options[opt.name] = optValue !== "false"; + // consume next argument as boolean flag value + if (optValue === "false" || optValue === "true") { + i++; + } + break; + case "string": + options[opt.name] = args[i] || ""; + i++; + break; + case "list": + var result = parseListTypeOption(opt, args[i], errors); + options[opt.name] = result || []; + if (result) { + i++; + } + break; + // If not a primitive, the possible types are specified in what is effectively a map of options. + default: + options[opt.name] = parseCustomTypeOption(opt, args[i], errors); + i++; + break; + } + } + else { + options[opt.name] = undefined; + i++; + } + } + return i; + } + /*@internal*/ + ts.compilerOptionsDidYouMeanDiagnostics = { + getOptionsNameMap: getOptionsNameMap, + optionDeclarations: ts.optionDeclarations, + unknownOptionDiagnostic: ts.Diagnostics.Unknown_compiler_option_0, + unknownDidYouMeanDiagnostic: ts.Diagnostics.Unknown_compiler_option_0_Did_you_mean_1, + optionTypeMismatchDiagnostic: ts.Diagnostics.Compiler_option_0_expects_an_argument + }; + function parseCommandLine(commandLine, readFile) { + return parseCommandLineWorker(ts.compilerOptionsDidYouMeanDiagnostics, commandLine, readFile); + } + ts.parseCommandLine = parseCommandLine; + /** @internal */ + function getOptionFromName(optionName, allowShort) { + return getOptionDeclarationFromName(getOptionsNameMap, optionName, allowShort); + } + ts.getOptionFromName = getOptionFromName; + function getOptionDeclarationFromName(getOptionNameMap, optionName, allowShort) { + if (allowShort === void 0) { allowShort = false; } + optionName = optionName.toLowerCase(); + var _a = getOptionNameMap(), optionsNameMap = _a.optionsNameMap, shortOptionNames = _a.shortOptionNames; + // Try to translate short option names to their full equivalents. + if (allowShort) { + var short = shortOptionNames.get(optionName); + if (short !== undefined) { + optionName = short; + } + } + return optionsNameMap.get(optionName); + } + var buildOptionsNameMapCache; + function getBuildOptionsNameMap() { + return buildOptionsNameMapCache || (buildOptionsNameMapCache = createOptionNameMap(ts.buildOpts)); + } + var buildOptionsDidYouMeanDiagnostics = { + getOptionsNameMap: getBuildOptionsNameMap, + optionDeclarations: ts.buildOpts, + unknownOptionDiagnostic: ts.Diagnostics.Unknown_build_option_0, + unknownDidYouMeanDiagnostic: ts.Diagnostics.Unknown_build_option_0_Did_you_mean_1, + optionTypeMismatchDiagnostic: ts.Diagnostics.Build_option_0_requires_a_value_of_type_1 + }; + /*@internal*/ + function parseBuildCommand(args) { + var _a = parseCommandLineWorker(buildOptionsDidYouMeanDiagnostics, args), options = _a.options, watchOptions = _a.watchOptions, projects = _a.fileNames, errors = _a.errors; + var buildOptions = options; + if (projects.length === 0) { + // tsc -b invoked with no extra arguments; act as if invoked with "tsc -b ." + projects.push("."); + } + // Nonsensical combinations + if (buildOptions.clean && buildOptions.force) { + errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Options_0_and_1_cannot_be_combined, "clean", "force")); + } + if (buildOptions.clean && buildOptions.verbose) { + errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Options_0_and_1_cannot_be_combined, "clean", "verbose")); + } + if (buildOptions.clean && buildOptions.watch) { + errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Options_0_and_1_cannot_be_combined, "clean", "watch")); + } + if (buildOptions.watch && buildOptions.dry) { + errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Options_0_and_1_cannot_be_combined, "watch", "dry")); + } + return { buildOptions: buildOptions, watchOptions: watchOptions, projects: projects, errors: errors }; + } + ts.parseBuildCommand = parseBuildCommand; + /* @internal */ + function getDiagnosticText(_message) { + var _args = []; + for (var _i = 1; _i < arguments.length; _i++) { + _args[_i - 1] = arguments[_i]; + } + var diagnostic = ts.createCompilerDiagnostic.apply(undefined, arguments); + return diagnostic.messageText; + } + ts.getDiagnosticText = getDiagnosticText; + /** + * Reads the config file, reports errors if any and exits if the config file cannot be found + */ + function getParsedCommandLineOfConfigFile(configFileName, optionsToExtend, host, extendedConfigCache, watchOptionsToExtend, extraFileExtensions) { + var configFileText = tryReadFile(configFileName, function (fileName) { return host.readFile(fileName); }); + if (!ts.isString(configFileText)) { + host.onUnRecoverableConfigFileDiagnostic(configFileText); + return undefined; + } + var result = ts.parseJsonText(configFileName, configFileText); + var cwd = host.getCurrentDirectory(); + result.path = ts.toPath(configFileName, cwd, ts.createGetCanonicalFileName(host.useCaseSensitiveFileNames)); + result.resolvedPath = result.path; + result.originalFileName = result.fileName; + return parseJsonSourceFileConfigFileContent(result, host, ts.getNormalizedAbsolutePath(ts.getDirectoryPath(configFileName), cwd), optionsToExtend, ts.getNormalizedAbsolutePath(configFileName, cwd), + /*resolutionStack*/ undefined, extraFileExtensions, extendedConfigCache, watchOptionsToExtend); + } + ts.getParsedCommandLineOfConfigFile = getParsedCommandLineOfConfigFile; + /** + * Read tsconfig.json file + * @param fileName The path to the config file + */ + function readConfigFile(fileName, readFile) { + var textOrDiagnostic = tryReadFile(fileName, readFile); + return ts.isString(textOrDiagnostic) ? parseConfigFileTextToJson(fileName, textOrDiagnostic) : { config: {}, error: textOrDiagnostic }; + } + ts.readConfigFile = readConfigFile; + /** + * Parse the text of the tsconfig.json file + * @param fileName The path to the config file + * @param jsonText The text of the config file + */ + function parseConfigFileTextToJson(fileName, jsonText) { + var jsonSourceFile = ts.parseJsonText(fileName, jsonText); + return { + config: convertToObject(jsonSourceFile, jsonSourceFile.parseDiagnostics), + error: jsonSourceFile.parseDiagnostics.length ? jsonSourceFile.parseDiagnostics[0] : undefined + }; + } + ts.parseConfigFileTextToJson = parseConfigFileTextToJson; + /** + * Read tsconfig.json file + * @param fileName The path to the config file + */ + function readJsonConfigFile(fileName, readFile) { + var textOrDiagnostic = tryReadFile(fileName, readFile); + return ts.isString(textOrDiagnostic) ? ts.parseJsonText(fileName, textOrDiagnostic) : { parseDiagnostics: [textOrDiagnostic] }; + } + ts.readJsonConfigFile = readJsonConfigFile; + /*@internal*/ + function tryReadFile(fileName, readFile) { + var text; + try { + text = readFile(fileName); + } + catch (e) { + return ts.createCompilerDiagnostic(ts.Diagnostics.Cannot_read_file_0_Colon_1, fileName, e.message); + } + return text === undefined ? ts.createCompilerDiagnostic(ts.Diagnostics.Cannot_read_file_0, fileName) : text; + } + ts.tryReadFile = tryReadFile; + function commandLineOptionsToMap(options) { + return ts.arrayToMap(options, getOptionName); + } + var typeAcquisitionDidYouMeanDiagnostics = { + optionDeclarations: ts.typeAcquisitionDeclarations, + unknownOptionDiagnostic: ts.Diagnostics.Unknown_type_acquisition_option_0, + unknownDidYouMeanDiagnostic: ts.Diagnostics.Unknown_type_acquisition_option_0_Did_you_mean_1, + }; + var watchOptionsNameMapCache; + function getWatchOptionsNameMap() { + return watchOptionsNameMapCache || (watchOptionsNameMapCache = createOptionNameMap(ts.optionsForWatch)); + } + var watchOptionsDidYouMeanDiagnostics = { + getOptionsNameMap: getWatchOptionsNameMap, + optionDeclarations: ts.optionsForWatch, + unknownOptionDiagnostic: ts.Diagnostics.Unknown_watch_option_0, + unknownDidYouMeanDiagnostic: ts.Diagnostics.Unknown_watch_option_0_Did_you_mean_1, + optionTypeMismatchDiagnostic: ts.Diagnostics.Watch_option_0_requires_a_value_of_type_1 + }; + var commandLineCompilerOptionsMapCache; + function getCommandLineCompilerOptionsMap() { + return commandLineCompilerOptionsMapCache || (commandLineCompilerOptionsMapCache = commandLineOptionsToMap(ts.optionDeclarations)); + } + var commandLineWatchOptionsMapCache; + function getCommandLineWatchOptionsMap() { + return commandLineWatchOptionsMapCache || (commandLineWatchOptionsMapCache = commandLineOptionsToMap(ts.optionsForWatch)); + } + var commandLineTypeAcquisitionMapCache; + function getCommandLineTypeAcquisitionMap() { + return commandLineTypeAcquisitionMapCache || (commandLineTypeAcquisitionMapCache = commandLineOptionsToMap(ts.typeAcquisitionDeclarations)); + } + var _tsconfigRootOptions; + function getTsconfigRootOptionsMap() { + if (_tsconfigRootOptions === undefined) { + _tsconfigRootOptions = { + name: undefined, + type: "object", + elementOptions: commandLineOptionsToMap([ + { + name: "compilerOptions", + type: "object", + elementOptions: getCommandLineCompilerOptionsMap(), + extraKeyDiagnostics: ts.compilerOptionsDidYouMeanDiagnostics, + }, + { + name: "watchOptions", + type: "object", + elementOptions: getCommandLineWatchOptionsMap(), + extraKeyDiagnostics: watchOptionsDidYouMeanDiagnostics, + }, + { + name: "typingOptions", + type: "object", + elementOptions: getCommandLineTypeAcquisitionMap(), + extraKeyDiagnostics: typeAcquisitionDidYouMeanDiagnostics, + }, + { + name: "typeAcquisition", + type: "object", + elementOptions: getCommandLineTypeAcquisitionMap(), + extraKeyDiagnostics: typeAcquisitionDidYouMeanDiagnostics + }, + { + name: "extends", + type: "string" + }, + { + name: "references", + type: "list", + element: { + name: "references", + type: "object" + } + }, + { + name: "files", + type: "list", + element: { + name: "files", + type: "string" + } + }, + { + name: "include", + type: "list", + element: { + name: "include", + type: "string" + } + }, + { + name: "exclude", + type: "list", + element: { + name: "exclude", + type: "string" + } + }, + ts.compileOnSaveCommandLineOption + ]) + }; + } + return _tsconfigRootOptions; + } + /** + * Convert the json syntax tree into the json value + */ + function convertToObject(sourceFile, errors) { + return convertToObjectWorker(sourceFile, errors, /*returnValue*/ true, /*knownRootOptions*/ undefined, /*jsonConversionNotifier*/ undefined); + } + ts.convertToObject = convertToObject; + /** + * Convert the json syntax tree into the json value and report errors + * This returns the json value (apart from checking errors) only if returnValue provided is true. + * Otherwise it just checks the errors and returns undefined + */ + /*@internal*/ + function convertToObjectWorker(sourceFile, errors, returnValue, knownRootOptions, jsonConversionNotifier) { + if (!sourceFile.statements.length) { + return returnValue ? {} : undefined; + } + return convertPropertyValueToJson(sourceFile.statements[0].expression, knownRootOptions); + function isRootOptionMap(knownOptions) { + return knownRootOptions && knownRootOptions.elementOptions === knownOptions; + } + function convertObjectLiteralExpressionToJson(node, knownOptions, extraKeyDiagnostics, parentOption) { + var result = returnValue ? {} : undefined; + var _loop_3 = function (element) { + if (element.kind !== 281 /* PropertyAssignment */) { + errors.push(ts.createDiagnosticForNodeInSourceFile(sourceFile, element, ts.Diagnostics.Property_assignment_expected)); + return "continue"; + } + if (element.questionToken) { + errors.push(ts.createDiagnosticForNodeInSourceFile(sourceFile, element.questionToken, ts.Diagnostics.The_0_modifier_can_only_be_used_in_TypeScript_files, "?")); + } + if (!isDoubleQuotedString(element.name)) { + errors.push(ts.createDiagnosticForNodeInSourceFile(sourceFile, element.name, ts.Diagnostics.String_literal_with_double_quotes_expected)); + } + var textOfKey = ts.isComputedNonLiteralName(element.name) ? undefined : ts.getTextOfPropertyName(element.name); + var keyText = textOfKey && ts.unescapeLeadingUnderscores(textOfKey); + var option = keyText && knownOptions ? knownOptions.get(keyText) : undefined; + if (keyText && extraKeyDiagnostics && !option) { + if (knownOptions) { + errors.push(createUnknownOptionError(keyText, extraKeyDiagnostics, function (message, arg0, arg1) { return ts.createDiagnosticForNodeInSourceFile(sourceFile, element.name, message, arg0, arg1); })); + } + else { + errors.push(ts.createDiagnosticForNodeInSourceFile(sourceFile, element.name, extraKeyDiagnostics.unknownOptionDiagnostic, keyText)); + } + } + var value = convertPropertyValueToJson(element.initializer, option); + if (typeof keyText !== "undefined") { + if (returnValue) { + result[keyText] = value; + } + // Notify key value set, if user asked for it + if (jsonConversionNotifier && + // Current callbacks are only on known parent option or if we are setting values in the root + (parentOption || isRootOptionMap(knownOptions))) { + var isValidOptionValue = isCompilerOptionsValue(option, value); + if (parentOption) { + if (isValidOptionValue) { + // Notify option set in the parent if its a valid option value + jsonConversionNotifier.onSetValidOptionKeyValueInParent(parentOption, option, value); + } + } + else if (isRootOptionMap(knownOptions)) { + if (isValidOptionValue) { + // Notify about the valid root key value being set + jsonConversionNotifier.onSetValidOptionKeyValueInRoot(keyText, element.name, value, element.initializer); + } + else if (!option) { + // Notify about the unknown root key value being set + jsonConversionNotifier.onSetUnknownOptionKeyValueInRoot(keyText, element.name, value, element.initializer); + } + } + } + } + }; + for (var _i = 0, _a = node.properties; _i < _a.length; _i++) { + var element = _a[_i]; + _loop_3(element); + } + return result; + } + function convertArrayLiteralExpressionToJson(elements, elementOption) { + if (!returnValue) { + return elements.forEach(function (element) { return convertPropertyValueToJson(element, elementOption); }); + } + // Filter out invalid values + return ts.filter(elements.map(function (element) { return convertPropertyValueToJson(element, elementOption); }), function (v) { return v !== undefined; }); + } + function convertPropertyValueToJson(valueExpression, option) { + switch (valueExpression.kind) { + case 106 /* TrueKeyword */: + reportInvalidOptionValue(option && option.type !== "boolean"); + return true; + case 91 /* FalseKeyword */: + reportInvalidOptionValue(option && option.type !== "boolean"); + return false; + case 100 /* NullKeyword */: + reportInvalidOptionValue(option && option.name === "extends"); // "extends" is the only option we don't allow null/undefined for + return null; // eslint-disable-line no-null/no-null + case 10 /* StringLiteral */: + if (!isDoubleQuotedString(valueExpression)) { + errors.push(ts.createDiagnosticForNodeInSourceFile(sourceFile, valueExpression, ts.Diagnostics.String_literal_with_double_quotes_expected)); + } + reportInvalidOptionValue(option && (ts.isString(option.type) && option.type !== "string")); + var text = valueExpression.text; + if (option && !ts.isString(option.type)) { + var customOption = option; + // Validate custom option type + if (!customOption.type.has(text.toLowerCase())) { + errors.push(createDiagnosticForInvalidCustomType(customOption, function (message, arg0, arg1) { return ts.createDiagnosticForNodeInSourceFile(sourceFile, valueExpression, message, arg0, arg1); })); + } + } + return text; + case 8 /* NumericLiteral */: + reportInvalidOptionValue(option && option.type !== "number"); + return Number(valueExpression.text); + case 207 /* PrefixUnaryExpression */: + if (valueExpression.operator !== 40 /* MinusToken */ || valueExpression.operand.kind !== 8 /* NumericLiteral */) { + break; // not valid JSON syntax + } + reportInvalidOptionValue(option && option.type !== "number"); + return -Number(valueExpression.operand.text); + case 193 /* ObjectLiteralExpression */: + reportInvalidOptionValue(option && option.type !== "object"); + var objectLiteralExpression = valueExpression; + // Currently having element option declaration in the tsconfig with type "object" + // determines if it needs onSetValidOptionKeyValueInParent callback or not + // At moment there are only "compilerOptions", "typeAcquisition" and "typingOptions" + // that satifies it and need it to modify options set in them (for normalizing file paths) + // vs what we set in the json + // If need arises, we can modify this interface and callbacks as needed + if (option) { + var _a = option, elementOptions = _a.elementOptions, extraKeyDiagnostics = _a.extraKeyDiagnostics, optionName = _a.name; + return convertObjectLiteralExpressionToJson(objectLiteralExpression, elementOptions, extraKeyDiagnostics, optionName); + } + else { + return convertObjectLiteralExpressionToJson(objectLiteralExpression, /* knownOptions*/ undefined, + /*extraKeyDiagnosticMessage */ undefined, /*parentOption*/ undefined); + } + case 192 /* ArrayLiteralExpression */: + reportInvalidOptionValue(option && option.type !== "list"); + return convertArrayLiteralExpressionToJson(valueExpression.elements, option && option.element); + } + // Not in expected format + if (option) { + reportInvalidOptionValue(/*isError*/ true); + } + else { + errors.push(ts.createDiagnosticForNodeInSourceFile(sourceFile, valueExpression, ts.Diagnostics.Property_value_can_only_be_string_literal_numeric_literal_true_false_null_object_literal_or_array_literal)); + } + return undefined; + function reportInvalidOptionValue(isError) { + if (isError) { + errors.push(ts.createDiagnosticForNodeInSourceFile(sourceFile, valueExpression, ts.Diagnostics.Compiler_option_0_requires_a_value_of_type_1, option.name, getCompilerOptionValueTypeString(option))); + } + } + } + function isDoubleQuotedString(node) { + return ts.isStringLiteral(node) && ts.isStringDoubleQuoted(node, sourceFile); + } + } + ts.convertToObjectWorker = convertToObjectWorker; + function getCompilerOptionValueTypeString(option) { + return option.type === "list" ? + "Array" : + ts.isString(option.type) ? option.type : "string"; + } + function isCompilerOptionsValue(option, value) { + if (option) { + if (isNullOrUndefined(value)) + return true; // All options are undefinable/nullable + if (option.type === "list") { + return ts.isArray(value); + } + var expectedType = ts.isString(option.type) ? option.type : "string"; + return typeof value === expectedType; + } + return false; + } + /** + * Generate an uncommented, complete tsconfig for use with "--showConfig" + * @param configParseResult options to be generated into tsconfig.json + * @param configFileName name of the parsed config file - output paths will be generated relative to this + * @param host provides current directory and case sensitivity services + */ + /** @internal */ + function convertToTSConfig(configParseResult, configFileName, host) { + var getCanonicalFileName = ts.createGetCanonicalFileName(host.useCaseSensitiveFileNames); + var files = ts.map(ts.filter(configParseResult.fileNames, (!configParseResult.configFileSpecs || !configParseResult.configFileSpecs.validatedIncludeSpecs) ? function (_) { return true; } : matchesSpecs(configFileName, configParseResult.configFileSpecs.validatedIncludeSpecs, configParseResult.configFileSpecs.validatedExcludeSpecs, host)), function (f) { return ts.getRelativePathFromFile(ts.getNormalizedAbsolutePath(configFileName, host.getCurrentDirectory()), ts.getNormalizedAbsolutePath(f, host.getCurrentDirectory()), getCanonicalFileName); }); + var optionMap = serializeCompilerOptions(configParseResult.options, { configFilePath: ts.getNormalizedAbsolutePath(configFileName, host.getCurrentDirectory()), useCaseSensitiveFileNames: host.useCaseSensitiveFileNames }); + var watchOptionMap = configParseResult.watchOptions && serializeWatchOptions(configParseResult.watchOptions); + var config = __assign(__assign({ compilerOptions: __assign(__assign({}, optionMapToObject(optionMap)), { showConfig: undefined, configFile: undefined, configFilePath: undefined, help: undefined, init: undefined, listFiles: undefined, listEmittedFiles: undefined, project: undefined, build: undefined, version: undefined }), watchOptions: watchOptionMap && optionMapToObject(watchOptionMap), references: ts.map(configParseResult.projectReferences, function (r) { return (__assign(__assign({}, r), { path: r.originalPath ? r.originalPath : "", originalPath: undefined })); }), files: ts.length(files) ? files : undefined }, (configParseResult.configFileSpecs ? { + include: filterSameAsDefaultInclude(configParseResult.configFileSpecs.validatedIncludeSpecs), + exclude: configParseResult.configFileSpecs.validatedExcludeSpecs + } : {})), { compileOnSave: !!configParseResult.compileOnSave ? true : undefined }); + return config; + } + ts.convertToTSConfig = convertToTSConfig; + function optionMapToObject(optionMap) { + return __assign({}, ts.arrayFrom(optionMap.entries()).reduce(function (prev, cur) { + var _a; + return (__assign(__assign({}, prev), (_a = {}, _a[cur[0]] = cur[1], _a))); + }, {})); + } + function filterSameAsDefaultInclude(specs) { + if (!ts.length(specs)) + return undefined; + if (ts.length(specs) !== 1) + return specs; + if (specs[0] === "**/*") + return undefined; + return specs; + } + function matchesSpecs(path, includeSpecs, excludeSpecs, host) { + if (!includeSpecs) + return function (_) { return true; }; + var patterns = ts.getFileMatcherPatterns(path, excludeSpecs, includeSpecs, host.useCaseSensitiveFileNames, host.getCurrentDirectory()); + var excludeRe = patterns.excludePattern && ts.getRegexFromPattern(patterns.excludePattern, host.useCaseSensitiveFileNames); + var includeRe = patterns.includeFilePattern && ts.getRegexFromPattern(patterns.includeFilePattern, host.useCaseSensitiveFileNames); + if (includeRe) { + if (excludeRe) { + return function (path) { return !(includeRe.test(path) && !excludeRe.test(path)); }; + } + return function (path) { return !includeRe.test(path); }; + } + if (excludeRe) { + return function (path) { return excludeRe.test(path); }; + } + return function (_) { return true; }; + } + function getCustomTypeMapOfCommandLineOption(optionDefinition) { + if (optionDefinition.type === "string" || optionDefinition.type === "number" || optionDefinition.type === "boolean" || optionDefinition.type === "object") { + // this is of a type CommandLineOptionOfPrimitiveType + return undefined; + } + else if (optionDefinition.type === "list") { + return getCustomTypeMapOfCommandLineOption(optionDefinition.element); + } + else { + return optionDefinition.type; + } + } + function getNameOfCompilerOptionValue(value, customTypeMap) { + // There is a typeMap associated with this command-line option so use it to map value back to its name + return ts.forEachEntry(customTypeMap, function (mapValue, key) { + if (mapValue === value) { + return key; + } + }); + } + function serializeCompilerOptions(options, pathOptions) { + return serializeOptionBaseObject(options, getOptionsNameMap(), pathOptions); + } + function serializeWatchOptions(options) { + return serializeOptionBaseObject(options, getWatchOptionsNameMap()); + } + function serializeOptionBaseObject(options, _a, pathOptions) { + var optionsNameMap = _a.optionsNameMap; + var result = ts.createMap(); + var getCanonicalFileName = pathOptions && ts.createGetCanonicalFileName(pathOptions.useCaseSensitiveFileNames); + var _loop_4 = function (name) { + if (ts.hasProperty(options, name)) { + // tsconfig only options cannot be specified via command line, + // so we can assume that only types that can appear here string | number | boolean + if (optionsNameMap.has(name) && optionsNameMap.get(name).category === ts.Diagnostics.Command_line_Options) { + return "continue"; + } + var value = options[name]; + var optionDefinition = optionsNameMap.get(name.toLowerCase()); + if (optionDefinition) { + var customTypeMap_1 = getCustomTypeMapOfCommandLineOption(optionDefinition); + if (!customTypeMap_1) { + // There is no map associated with this compiler option then use the value as-is + // This is the case if the value is expect to be string, number, boolean or list of string + if (pathOptions && optionDefinition.isFilePath) { + result.set(name, ts.getRelativePathFromFile(pathOptions.configFilePath, ts.getNormalizedAbsolutePath(value, ts.getDirectoryPath(pathOptions.configFilePath)), getCanonicalFileName)); + } + else { + result.set(name, value); + } + } + else { + if (optionDefinition.type === "list") { + result.set(name, value.map(function (element) { return getNameOfCompilerOptionValue(element, customTypeMap_1); })); // TODO: GH#18217 + } + else { + // There is a typeMap associated with this command-line option so use it to map value back to its name + result.set(name, getNameOfCompilerOptionValue(value, customTypeMap_1)); + } + } + } + } + }; + for (var name in options) { + _loop_4(name); + } + return result; + } + /** + * Generate tsconfig configuration when running command line "--init" + * @param options commandlineOptions to be generated into tsconfig.json + * @param fileNames array of filenames to be generated into tsconfig.json + */ + /* @internal */ + function generateTSConfig(options, fileNames, newLine) { + var compilerOptions = ts.extend(options, ts.defaultInitCompilerOptions); + var compilerOptionsMap = serializeCompilerOptions(compilerOptions); + return writeConfigurations(); + function getDefaultValueForOption(option) { + switch (option.type) { + case "number": + return 1; + case "boolean": + return true; + case "string": + return option.isFilePath ? "./" : ""; + case "list": + return []; + case "object": + return {}; + default: + var iterResult = option.type.keys().next(); + if (!iterResult.done) + return iterResult.value; + return ts.Debug.fail("Expected 'option.type' to have entries."); + } + } + function makePadding(paddingLength) { + return Array(paddingLength + 1).join(" "); + } + function isAllowedOption(_a) { + var category = _a.category, name = _a.name; + // Skip options which do not have a category or have category `Command_line_Options` + // Exclude all possible `Advanced_Options` in tsconfig.json which were NOT defined in command line + return category !== undefined + && category !== ts.Diagnostics.Command_line_Options + && (category !== ts.Diagnostics.Advanced_Options || compilerOptionsMap.has(name)); + } + function writeConfigurations() { + // Filter applicable options to place in the file + var categorizedOptions = ts.createMultiMap(); + for (var _i = 0, optionDeclarations_1 = ts.optionDeclarations; _i < optionDeclarations_1.length; _i++) { + var option = optionDeclarations_1[_i]; + var category = option.category; + if (isAllowedOption(option)) { + categorizedOptions.add(ts.getLocaleSpecificMessage(category), option); + } + } + // Serialize all options and their descriptions + var marginLength = 0; + var seenKnownKeys = 0; + var entries = []; + categorizedOptions.forEach(function (options, category) { + if (entries.length !== 0) { + entries.push({ value: "" }); + } + entries.push({ value: "/* " + category + " */" }); + for (var _i = 0, options_1 = options; _i < options_1.length; _i++) { + var option = options_1[_i]; + var optionName = void 0; + if (compilerOptionsMap.has(option.name)) { + optionName = "\"" + option.name + "\": " + JSON.stringify(compilerOptionsMap.get(option.name)) + ((seenKnownKeys += 1) === compilerOptionsMap.size ? "" : ","); + } + else { + optionName = "// \"" + option.name + "\": " + JSON.stringify(getDefaultValueForOption(option)) + ","; + } + entries.push({ + value: optionName, + description: "/* " + (option.description && ts.getLocaleSpecificMessage(option.description) || option.name) + " */" + }); + marginLength = Math.max(optionName.length, marginLength); + } + }); + // Write the output + var tab = makePadding(2); + var result = []; + result.push("{"); + result.push(tab + "\"compilerOptions\": {"); + result.push("" + tab + tab + "/* " + ts.getLocaleSpecificMessage(ts.Diagnostics.Visit_https_Colon_Slash_Slashaka_ms_Slashtsconfig_json_to_read_more_about_this_file) + " */"); + result.push(""); + // Print out each row, aligning all the descriptions on the same column. + for (var _a = 0, entries_3 = entries; _a < entries_3.length; _a++) { + var entry = entries_3[_a]; + var value = entry.value, _b = entry.description, description = _b === void 0 ? "" : _b; + result.push(value && "" + tab + tab + value + (description && (makePadding(marginLength - value.length + 2) + description))); + } + if (fileNames.length) { + result.push(tab + "},"); + result.push(tab + "\"files\": ["); + for (var i = 0; i < fileNames.length; i++) { + result.push("" + tab + tab + JSON.stringify(fileNames[i]) + (i === fileNames.length - 1 ? "" : ",")); + } + result.push(tab + "]"); + } + else { + result.push(tab + "}"); + } + result.push("}"); + return result.join(newLine) + newLine; + } + } + ts.generateTSConfig = generateTSConfig; + /* @internal */ + function convertToOptionsWithAbsolutePaths(options, toAbsolutePath) { + var result = {}; + var optionsNameMap = getOptionsNameMap().optionsNameMap; + for (var name in options) { + if (ts.hasProperty(options, name)) { + result[name] = convertToOptionValueWithAbsolutePaths(optionsNameMap.get(name.toLowerCase()), options[name], toAbsolutePath); + } + } + if (result.configFilePath) { + result.configFilePath = toAbsolutePath(result.configFilePath); + } + return result; + } + ts.convertToOptionsWithAbsolutePaths = convertToOptionsWithAbsolutePaths; + function convertToOptionValueWithAbsolutePaths(option, value, toAbsolutePath) { + if (option && !isNullOrUndefined(value)) { + if (option.type === "list") { + var values = value; + if (option.element.isFilePath && values.length) { + return values.map(toAbsolutePath); + } + } + else if (option.isFilePath) { + return toAbsolutePath(value); + } + } + return value; + } + /** + * Parse the contents of a config file (tsconfig.json). + * @param json The contents of the config file to parse + * @param host Instance of ParseConfigHost used to enumerate files in folder. + * @param basePath A root directory to resolve relative path entries in the config + * file to. e.g. outDir + */ + function parseJsonConfigFileContent(json, host, basePath, existingOptions, configFileName, resolutionStack, extraFileExtensions, extendedConfigCache, existingWatchOptions) { + return parseJsonConfigFileContentWorker(json, /*sourceFile*/ undefined, host, basePath, existingOptions, existingWatchOptions, configFileName, resolutionStack, extraFileExtensions, extendedConfigCache); + } + ts.parseJsonConfigFileContent = parseJsonConfigFileContent; + /** + * Parse the contents of a config file (tsconfig.json). + * @param jsonNode The contents of the config file to parse + * @param host Instance of ParseConfigHost used to enumerate files in folder. + * @param basePath A root directory to resolve relative path entries in the config + * file to. e.g. outDir + */ + function parseJsonSourceFileConfigFileContent(sourceFile, host, basePath, existingOptions, configFileName, resolutionStack, extraFileExtensions, extendedConfigCache, existingWatchOptions) { + return parseJsonConfigFileContentWorker(/*json*/ undefined, sourceFile, host, basePath, existingOptions, existingWatchOptions, configFileName, resolutionStack, extraFileExtensions, extendedConfigCache); + } + ts.parseJsonSourceFileConfigFileContent = parseJsonSourceFileConfigFileContent; + /*@internal*/ + function setConfigFileInOptions(options, configFile) { + if (configFile) { + Object.defineProperty(options, "configFile", { enumerable: false, writable: false, value: configFile }); + } + } + ts.setConfigFileInOptions = setConfigFileInOptions; + function isNullOrUndefined(x) { + return x === undefined || x === null; // eslint-disable-line no-null/no-null + } + function directoryOfCombinedPath(fileName, basePath) { + // Use the `getNormalizedAbsolutePath` function to avoid canonicalizing the path, as it must remain noncanonical + // until consistent casing errors are reported + return ts.getDirectoryPath(ts.getNormalizedAbsolutePath(fileName, basePath)); + } + /** + * Parse the contents of a config file from json or json source file (tsconfig.json). + * @param json The contents of the config file to parse + * @param sourceFile sourceFile corresponding to the Json + * @param host Instance of ParseConfigHost used to enumerate files in folder. + * @param basePath A root directory to resolve relative path entries in the config + * file to. e.g. outDir + * @param resolutionStack Only present for backwards-compatibility. Should be empty. + */ + function parseJsonConfigFileContentWorker(json, sourceFile, host, basePath, existingOptions, existingWatchOptions, configFileName, resolutionStack, extraFileExtensions, extendedConfigCache) { + if (existingOptions === void 0) { existingOptions = {}; } + if (resolutionStack === void 0) { resolutionStack = []; } + if (extraFileExtensions === void 0) { extraFileExtensions = []; } + ts.Debug.assert((json === undefined && sourceFile !== undefined) || (json !== undefined && sourceFile === undefined)); + var errors = []; + var parsedConfig = parseConfig(json, sourceFile, host, basePath, configFileName, resolutionStack, errors, extendedConfigCache); + var raw = parsedConfig.raw; + var options = ts.extend(existingOptions, parsedConfig.options || {}); + var watchOptions = existingWatchOptions && parsedConfig.watchOptions ? + ts.extend(existingWatchOptions, parsedConfig.watchOptions) : + parsedConfig.watchOptions || existingWatchOptions; + options.configFilePath = configFileName && ts.normalizeSlashes(configFileName); + setConfigFileInOptions(options, sourceFile); + var projectReferences; + var _a = getFileNames(), fileNames = _a.fileNames, wildcardDirectories = _a.wildcardDirectories, spec = _a.spec; + return { + options: options, + watchOptions: watchOptions, + fileNames: fileNames, + projectReferences: projectReferences, + typeAcquisition: parsedConfig.typeAcquisition || getDefaultTypeAcquisition(), + raw: raw, + errors: errors, + wildcardDirectories: wildcardDirectories, + compileOnSave: !!raw.compileOnSave, + configFileSpecs: spec + }; + function getFileNames() { + var filesSpecs; + if (ts.hasProperty(raw, "files") && !isNullOrUndefined(raw.files)) { + if (ts.isArray(raw.files)) { + filesSpecs = raw.files; + var hasReferences = ts.hasProperty(raw, "references") && !isNullOrUndefined(raw.references); + var hasZeroOrNoReferences = !hasReferences || raw.references.length === 0; + var hasExtends = ts.hasProperty(raw, "extends"); + if (filesSpecs.length === 0 && hasZeroOrNoReferences && !hasExtends) { + if (sourceFile) { + var fileName = configFileName || "tsconfig.json"; + var diagnosticMessage = ts.Diagnostics.The_files_list_in_config_file_0_is_empty; + var nodeValue = ts.firstDefined(ts.getTsConfigPropArray(sourceFile, "files"), function (property) { return property.initializer; }); + var error = nodeValue + ? ts.createDiagnosticForNodeInSourceFile(sourceFile, nodeValue, diagnosticMessage, fileName) + : ts.createCompilerDiagnostic(diagnosticMessage, fileName); + errors.push(error); + } + else { + createCompilerDiagnosticOnlyIfJson(ts.Diagnostics.The_files_list_in_config_file_0_is_empty, configFileName || "tsconfig.json"); + } + } + } + else { + createCompilerDiagnosticOnlyIfJson(ts.Diagnostics.Compiler_option_0_requires_a_value_of_type_1, "files", "Array"); + } + } + var includeSpecs; + if (ts.hasProperty(raw, "include") && !isNullOrUndefined(raw.include)) { + if (ts.isArray(raw.include)) { + includeSpecs = raw.include; + } + else { + createCompilerDiagnosticOnlyIfJson(ts.Diagnostics.Compiler_option_0_requires_a_value_of_type_1, "include", "Array"); + } + } + var excludeSpecs; + if (ts.hasProperty(raw, "exclude") && !isNullOrUndefined(raw.exclude)) { + if (ts.isArray(raw.exclude)) { + excludeSpecs = raw.exclude; + } + else { + createCompilerDiagnosticOnlyIfJson(ts.Diagnostics.Compiler_option_0_requires_a_value_of_type_1, "exclude", "Array"); + } + } + else if (raw.compilerOptions) { + var outDir = raw.compilerOptions.outDir; + var declarationDir = raw.compilerOptions.declarationDir; + if (outDir || declarationDir) { + excludeSpecs = [outDir, declarationDir].filter(function (d) { return !!d; }); + } + } + if (filesSpecs === undefined && includeSpecs === undefined) { + includeSpecs = ["**/*"]; + } + var result = matchFileNames(filesSpecs, includeSpecs, excludeSpecs, configFileName ? directoryOfCombinedPath(configFileName, basePath) : basePath, options, host, errors, extraFileExtensions, sourceFile); + if (shouldReportNoInputFiles(result, canJsonReportNoInutFiles(raw), resolutionStack)) { + errors.push(getErrorForNoInputFiles(result.spec, configFileName)); + } + if (ts.hasProperty(raw, "references") && !isNullOrUndefined(raw.references)) { + if (ts.isArray(raw.references)) { + for (var _i = 0, _a = raw.references; _i < _a.length; _i++) { + var ref = _a[_i]; + if (typeof ref.path !== "string") { + createCompilerDiagnosticOnlyIfJson(ts.Diagnostics.Compiler_option_0_requires_a_value_of_type_1, "reference.path", "string"); + } + else { + (projectReferences || (projectReferences = [])).push({ + path: ts.getNormalizedAbsolutePath(ref.path, basePath), + originalPath: ref.path, + prepend: ref.prepend, + circular: ref.circular + }); + } + } + } + else { + createCompilerDiagnosticOnlyIfJson(ts.Diagnostics.Compiler_option_0_requires_a_value_of_type_1, "references", "Array"); + } + } + return result; + } + function createCompilerDiagnosticOnlyIfJson(message, arg0, arg1) { + if (!sourceFile) { + errors.push(ts.createCompilerDiagnostic(message, arg0, arg1)); + } + } + } + function isErrorNoInputFiles(error) { + return error.code === ts.Diagnostics.No_inputs_were_found_in_config_file_0_Specified_include_paths_were_1_and_exclude_paths_were_2.code; + } + function getErrorForNoInputFiles(_a, configFileName) { + var includeSpecs = _a.includeSpecs, excludeSpecs = _a.excludeSpecs; + return ts.createCompilerDiagnostic(ts.Diagnostics.No_inputs_were_found_in_config_file_0_Specified_include_paths_were_1_and_exclude_paths_were_2, configFileName || "tsconfig.json", JSON.stringify(includeSpecs || []), JSON.stringify(excludeSpecs || [])); + } + function shouldReportNoInputFiles(result, canJsonReportNoInutFiles, resolutionStack) { + return result.fileNames.length === 0 && canJsonReportNoInutFiles && (!resolutionStack || resolutionStack.length === 0); + } + /*@internal*/ + function canJsonReportNoInutFiles(raw) { + return !ts.hasProperty(raw, "files") && !ts.hasProperty(raw, "references"); + } + ts.canJsonReportNoInutFiles = canJsonReportNoInutFiles; + /*@internal*/ + function updateErrorForNoInputFiles(result, configFileName, configFileSpecs, configParseDiagnostics, canJsonReportNoInutFiles) { + var existingErrors = configParseDiagnostics.length; + if (shouldReportNoInputFiles(result, canJsonReportNoInutFiles)) { + configParseDiagnostics.push(getErrorForNoInputFiles(configFileSpecs, configFileName)); + } + else { + ts.filterMutate(configParseDiagnostics, function (error) { return !isErrorNoInputFiles(error); }); + } + return existingErrors !== configParseDiagnostics.length; + } + ts.updateErrorForNoInputFiles = updateErrorForNoInputFiles; + function isSuccessfulParsedTsconfig(value) { + return !!value.options; + } + /** + * This *just* extracts options/include/exclude/files out of a config file. + * It does *not* resolve the included files. + */ + function parseConfig(json, sourceFile, host, basePath, configFileName, resolutionStack, errors, extendedConfigCache) { + basePath = ts.normalizeSlashes(basePath); + var resolvedPath = ts.getNormalizedAbsolutePath(configFileName || "", basePath); + if (resolutionStack.indexOf(resolvedPath) >= 0) { + errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Circularity_detected_while_resolving_configuration_Colon_0, __spreadArrays(resolutionStack, [resolvedPath]).join(" -> "))); + return { raw: json || convertToObject(sourceFile, errors) }; + } + var ownConfig = json ? + parseOwnConfigOfJson(json, host, basePath, configFileName, errors) : + parseOwnConfigOfJsonSourceFile(sourceFile, host, basePath, configFileName, errors); + if (ownConfig.extendedConfigPath) { + // copy the resolution stack so it is never reused between branches in potential diamond-problem scenarios. + resolutionStack = resolutionStack.concat([resolvedPath]); + var extendedConfig = getExtendedConfig(sourceFile, ownConfig.extendedConfigPath, host, basePath, resolutionStack, errors, extendedConfigCache); + if (extendedConfig && isSuccessfulParsedTsconfig(extendedConfig)) { + var baseRaw_1 = extendedConfig.raw; + var raw_1 = ownConfig.raw; + var setPropertyInRawIfNotUndefined = function (propertyName) { + var value = raw_1[propertyName] || baseRaw_1[propertyName]; + if (value) { + raw_1[propertyName] = value; + } + }; + setPropertyInRawIfNotUndefined("include"); + setPropertyInRawIfNotUndefined("exclude"); + setPropertyInRawIfNotUndefined("files"); + if (raw_1.compileOnSave === undefined) { + raw_1.compileOnSave = baseRaw_1.compileOnSave; + } + ownConfig.options = ts.assign({}, extendedConfig.options, ownConfig.options); + ownConfig.watchOptions = ownConfig.watchOptions && extendedConfig.watchOptions ? + ts.assign({}, extendedConfig.watchOptions, ownConfig.watchOptions) : + ownConfig.watchOptions || extendedConfig.watchOptions; + // TODO extend type typeAcquisition + } + } + return ownConfig; + } + function parseOwnConfigOfJson(json, host, basePath, configFileName, errors) { + if (ts.hasProperty(json, "excludes")) { + errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Unknown_option_excludes_Did_you_mean_exclude)); + } + var options = convertCompilerOptionsFromJsonWorker(json.compilerOptions, basePath, errors, configFileName); + // typingOptions has been deprecated and is only supported for backward compatibility purposes. + // It should be removed in future releases - use typeAcquisition instead. + var typeAcquisition = convertTypeAcquisitionFromJsonWorker(json.typeAcquisition || json.typingOptions, basePath, errors, configFileName); + var watchOptions = convertWatchOptionsFromJsonWorker(json.watchOptions, basePath, errors); + json.compileOnSave = convertCompileOnSaveOptionFromJson(json, basePath, errors); + var extendedConfigPath; + if (json.extends) { + if (!ts.isString(json.extends)) { + errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Compiler_option_0_requires_a_value_of_type_1, "extends", "string")); + } + else { + var newBase = configFileName ? directoryOfCombinedPath(configFileName, basePath) : basePath; + extendedConfigPath = getExtendsConfigPath(json.extends, host, newBase, errors, ts.createCompilerDiagnostic); + } + } + return { raw: json, options: options, watchOptions: watchOptions, typeAcquisition: typeAcquisition, extendedConfigPath: extendedConfigPath }; + } + function parseOwnConfigOfJsonSourceFile(sourceFile, host, basePath, configFileName, errors) { + var options = getDefaultCompilerOptions(configFileName); + var typeAcquisition, typingOptionstypeAcquisition; + var watchOptions; + var extendedConfigPath; + var optionsIterator = { + onSetValidOptionKeyValueInParent: function (parentOption, option, value) { + var currentOption; + switch (parentOption) { + case "compilerOptions": + currentOption = options; + break; + case "watchOptions": + currentOption = (watchOptions || (watchOptions = {})); + break; + case "typeAcquisition": + currentOption = (typeAcquisition || (typeAcquisition = getDefaultTypeAcquisition(configFileName))); + break; + case "typingOptions": + currentOption = (typingOptionstypeAcquisition || (typingOptionstypeAcquisition = getDefaultTypeAcquisition(configFileName))); + break; + default: + ts.Debug.fail("Unknown option"); + } + currentOption[option.name] = normalizeOptionValue(option, basePath, value); + }, + onSetValidOptionKeyValueInRoot: function (key, _keyNode, value, valueNode) { + switch (key) { + case "extends": + var newBase = configFileName ? directoryOfCombinedPath(configFileName, basePath) : basePath; + extendedConfigPath = getExtendsConfigPath(value, host, newBase, errors, function (message, arg0) { + return ts.createDiagnosticForNodeInSourceFile(sourceFile, valueNode, message, arg0); + }); + return; + } + }, + onSetUnknownOptionKeyValueInRoot: function (key, keyNode, _value, _valueNode) { + if (key === "excludes") { + errors.push(ts.createDiagnosticForNodeInSourceFile(sourceFile, keyNode, ts.Diagnostics.Unknown_option_excludes_Did_you_mean_exclude)); + } + } + }; + var json = convertToObjectWorker(sourceFile, errors, /*returnValue*/ true, getTsconfigRootOptionsMap(), optionsIterator); + if (!typeAcquisition) { + if (typingOptionstypeAcquisition) { + typeAcquisition = (typingOptionstypeAcquisition.enableAutoDiscovery !== undefined) ? + { + enable: typingOptionstypeAcquisition.enableAutoDiscovery, + include: typingOptionstypeAcquisition.include, + exclude: typingOptionstypeAcquisition.exclude + } : + typingOptionstypeAcquisition; + } + else { + typeAcquisition = getDefaultTypeAcquisition(configFileName); + } + } + return { raw: json, options: options, watchOptions: watchOptions, typeAcquisition: typeAcquisition, extendedConfigPath: extendedConfigPath }; + } + function getExtendsConfigPath(extendedConfig, host, basePath, errors, createDiagnostic) { + extendedConfig = ts.normalizeSlashes(extendedConfig); + if (ts.isRootedDiskPath(extendedConfig) || ts.startsWith(extendedConfig, "./") || ts.startsWith(extendedConfig, "../")) { + var extendedConfigPath = ts.getNormalizedAbsolutePath(extendedConfig, basePath); + if (!host.fileExists(extendedConfigPath) && !ts.endsWith(extendedConfigPath, ".json" /* Json */)) { + extendedConfigPath = extendedConfigPath + ".json"; + if (!host.fileExists(extendedConfigPath)) { + errors.push(createDiagnostic(ts.Diagnostics.File_0_not_found, extendedConfig)); + return undefined; + } + } + return extendedConfigPath; + } + // If the path isn't a rooted or relative path, resolve like a module + var resolved = ts.nodeModuleNameResolver(extendedConfig, ts.combinePaths(basePath, "tsconfig.json"), { moduleResolution: ts.ModuleResolutionKind.NodeJs }, host, /*cache*/ undefined, /*projectRefs*/ undefined, /*lookupConfig*/ true); + if (resolved.resolvedModule) { + return resolved.resolvedModule.resolvedFileName; + } + errors.push(createDiagnostic(ts.Diagnostics.File_0_not_found, extendedConfig)); + return undefined; + } + function getExtendedConfig(sourceFile, extendedConfigPath, host, basePath, resolutionStack, errors, extendedConfigCache) { + var _a; + var path = host.useCaseSensitiveFileNames ? extendedConfigPath : ts.toFileNameLowerCase(extendedConfigPath); + var value; + var extendedResult; + var extendedConfig; + if (extendedConfigCache && (value = extendedConfigCache.get(path))) { + (extendedResult = value.extendedResult, extendedConfig = value.extendedConfig); + } + else { + extendedResult = readJsonConfigFile(extendedConfigPath, function (path) { return host.readFile(path); }); + if (!extendedResult.parseDiagnostics.length) { + var extendedDirname = ts.getDirectoryPath(extendedConfigPath); + extendedConfig = parseConfig(/*json*/ undefined, extendedResult, host, extendedDirname, ts.getBaseFileName(extendedConfigPath), resolutionStack, errors, extendedConfigCache); + if (isSuccessfulParsedTsconfig(extendedConfig)) { + // Update the paths to reflect base path + var relativeDifference_1 = ts.convertToRelativePath(extendedDirname, basePath, ts.identity); + var updatePath_1 = function (path) { return ts.isRootedDiskPath(path) ? path : ts.combinePaths(relativeDifference_1, path); }; + var mapPropertiesInRawIfNotUndefined = function (propertyName) { + if (raw_2[propertyName]) { + raw_2[propertyName] = ts.map(raw_2[propertyName], updatePath_1); + } + }; + var raw_2 = extendedConfig.raw; + mapPropertiesInRawIfNotUndefined("include"); + mapPropertiesInRawIfNotUndefined("exclude"); + mapPropertiesInRawIfNotUndefined("files"); + } + } + if (extendedConfigCache) { + extendedConfigCache.set(path, { extendedResult: extendedResult, extendedConfig: extendedConfig }); + } + } + if (sourceFile) { + sourceFile.extendedSourceFiles = [extendedResult.fileName]; + if (extendedResult.extendedSourceFiles) { + (_a = sourceFile.extendedSourceFiles).push.apply(_a, extendedResult.extendedSourceFiles); + } + } + if (extendedResult.parseDiagnostics.length) { + errors.push.apply(errors, extendedResult.parseDiagnostics); + return undefined; + } + return extendedConfig; + } + function convertCompileOnSaveOptionFromJson(jsonOption, basePath, errors) { + if (!ts.hasProperty(jsonOption, ts.compileOnSaveCommandLineOption.name)) { + return false; + } + var result = convertJsonOption(ts.compileOnSaveCommandLineOption, jsonOption.compileOnSave, basePath, errors); + return typeof result === "boolean" && result; + } + function convertCompilerOptionsFromJson(jsonOptions, basePath, configFileName) { + var errors = []; + var options = convertCompilerOptionsFromJsonWorker(jsonOptions, basePath, errors, configFileName); + return { options: options, errors: errors }; + } + ts.convertCompilerOptionsFromJson = convertCompilerOptionsFromJson; + function convertTypeAcquisitionFromJson(jsonOptions, basePath, configFileName) { + var errors = []; + var options = convertTypeAcquisitionFromJsonWorker(jsonOptions, basePath, errors, configFileName); + return { options: options, errors: errors }; + } + ts.convertTypeAcquisitionFromJson = convertTypeAcquisitionFromJson; + function getDefaultCompilerOptions(configFileName) { + var options = configFileName && ts.getBaseFileName(configFileName) === "jsconfig.json" + ? { allowJs: true, maxNodeModuleJsDepth: 2, allowSyntheticDefaultImports: true, skipLibCheck: true, noEmit: true } + : {}; + return options; + } + function convertCompilerOptionsFromJsonWorker(jsonOptions, basePath, errors, configFileName) { + var options = getDefaultCompilerOptions(configFileName); + convertOptionsFromJson(getCommandLineCompilerOptionsMap(), jsonOptions, basePath, options, ts.compilerOptionsDidYouMeanDiagnostics, errors); + if (configFileName) { + options.configFilePath = ts.normalizeSlashes(configFileName); + } + return options; + } + function getDefaultTypeAcquisition(configFileName) { + return { enable: !!configFileName && ts.getBaseFileName(configFileName) === "jsconfig.json", include: [], exclude: [] }; + } + function convertTypeAcquisitionFromJsonWorker(jsonOptions, basePath, errors, configFileName) { + var options = getDefaultTypeAcquisition(configFileName); + var typeAcquisition = convertEnableAutoDiscoveryToEnable(jsonOptions); + convertOptionsFromJson(getCommandLineTypeAcquisitionMap(), typeAcquisition, basePath, options, typeAcquisitionDidYouMeanDiagnostics, errors); + return options; + } + function convertWatchOptionsFromJsonWorker(jsonOptions, basePath, errors) { + return convertOptionsFromJson(getCommandLineWatchOptionsMap(), jsonOptions, basePath, /*defaultOptions*/ undefined, watchOptionsDidYouMeanDiagnostics, errors); + } + function convertOptionsFromJson(optionsNameMap, jsonOptions, basePath, defaultOptions, diagnostics, errors) { + if (!jsonOptions) { + return; + } + for (var id in jsonOptions) { + var opt = optionsNameMap.get(id); + if (opt) { + (defaultOptions || (defaultOptions = {}))[opt.name] = convertJsonOption(opt, jsonOptions[id], basePath, errors); + } + else { + errors.push(createUnknownOptionError(id, diagnostics, ts.createCompilerDiagnostic)); + } + } + return defaultOptions; + } + function convertJsonOption(opt, value, basePath, errors) { + if (isCompilerOptionsValue(opt, value)) { + var optType = opt.type; + if (optType === "list" && ts.isArray(value)) { + return convertJsonOptionOfListType(opt, value, basePath, errors); + } + else if (!ts.isString(optType)) { + return convertJsonOptionOfCustomType(opt, value, errors); + } + return normalizeNonListOptionValue(opt, basePath, value); + } + else { + errors.push(ts.createCompilerDiagnostic(ts.Diagnostics.Compiler_option_0_requires_a_value_of_type_1, opt.name, getCompilerOptionValueTypeString(opt))); + } + } + function normalizeOptionValue(option, basePath, value) { + if (isNullOrUndefined(value)) + return undefined; + if (option.type === "list") { + var listOption_1 = option; + if (listOption_1.element.isFilePath || !ts.isString(listOption_1.element.type)) { + return ts.filter(ts.map(value, function (v) { return normalizeOptionValue(listOption_1.element, basePath, v); }), function (v) { return !!v; }); + } + return value; + } + else if (!ts.isString(option.type)) { + return option.type.get(ts.isString(value) ? value.toLowerCase() : value); + } + return normalizeNonListOptionValue(option, basePath, value); + } + function normalizeNonListOptionValue(option, basePath, value) { + if (option.isFilePath) { + value = ts.getNormalizedAbsolutePath(value, basePath); + if (value === "") { + value = "."; + } + } + return value; + } + function convertJsonOptionOfCustomType(opt, value, errors) { + if (isNullOrUndefined(value)) + return undefined; + var key = value.toLowerCase(); + var val = opt.type.get(key); + if (val !== undefined) { + return val; + } + else { + errors.push(createCompilerDiagnosticForInvalidCustomType(opt)); + } + } + function convertJsonOptionOfListType(option, values, basePath, errors) { + return ts.filter(ts.map(values, function (v) { return convertJsonOption(option.element, v, basePath, errors); }), function (v) { return !!v; }); + } + function trimString(s) { + return typeof s.trim === "function" ? s.trim() : s.replace(/^[\s]+|[\s]+$/g, ""); + } + /** + * Tests for a path that ends in a recursive directory wildcard. + * Matches **, \**, **\, and \**\, but not a**b. + * + * NOTE: used \ in place of / above to avoid issues with multiline comments. + * + * Breakdown: + * (^|\/) # matches either the beginning of the string or a directory separator. + * \*\* # matches the recursive directory wildcard "**". + * \/?$ # matches an optional trailing directory separator at the end of the string. + */ + var invalidTrailingRecursionPattern = /(^|\/)\*\*\/?$/; + /** + * Tests for a path where .. appears after a recursive directory wildcard. + * Matches **\..\*, **\a\..\*, and **\.., but not ..\**\* + * + * NOTE: used \ in place of / above to avoid issues with multiline comments. + * + * Breakdown: + * (^|\/) # matches either the beginning of the string or a directory separator. + * \*\*\/ # matches a recursive directory wildcard "**" followed by a directory separator. + * (.*\/)? # optionally matches any number of characters followed by a directory separator. + * \.\. # matches a parent directory path component ".." + * ($|\/) # matches either the end of the string or a directory separator. + */ + var invalidDotDotAfterRecursiveWildcardPattern = /(^|\/)\*\*\/(.*\/)?\.\.($|\/)/; + /** + * Tests for a path containing a wildcard character in a directory component of the path. + * Matches \*\, \?\, and \a*b\, but not \a\ or \a\*. + * + * NOTE: used \ in place of / above to avoid issues with multiline comments. + * + * Breakdown: + * \/ # matches a directory separator. + * [^/]*? # matches any number of characters excluding directory separators (non-greedy). + * [*?] # matches either a wildcard character (* or ?) + * [^/]* # matches any number of characters excluding directory separators (greedy). + * \/ # matches a directory separator. + */ + var watchRecursivePattern = /\/[^/]*?[*?][^/]*\//; + /** + * Matches the portion of a wildcard path that does not contain wildcards. + * Matches \a of \a\*, or \a\b\c of \a\b\c\?\d. + * + * NOTE: used \ in place of / above to avoid issues with multiline comments. + * + * Breakdown: + * ^ # matches the beginning of the string + * [^*?]* # matches any number of non-wildcard characters + * (?=\/[^/]*[*?]) # lookahead that matches a directory separator followed by + * # a path component that contains at least one wildcard character (* or ?). + */ + var wildcardDirectoryPattern = /^[^*?]*(?=\/[^/]*[*?])/; + /** + * Expands an array of file specifications. + * + * @param filesSpecs The literal file names to include. + * @param includeSpecs The wildcard file specifications to include. + * @param excludeSpecs The wildcard file specifications to exclude. + * @param basePath The base path for any relative file specifications. + * @param options Compiler options. + * @param host The host used to resolve files and directories. + * @param errors An array for diagnostic reporting. + */ + function matchFileNames(filesSpecs, includeSpecs, excludeSpecs, basePath, options, host, errors, extraFileExtensions, jsonSourceFile) { + basePath = ts.normalizePath(basePath); + var validatedIncludeSpecs, validatedExcludeSpecs; + // The exclude spec list is converted into a regular expression, which allows us to quickly + // test whether a file or directory should be excluded before recursively traversing the + // file system. + if (includeSpecs) { + validatedIncludeSpecs = validateSpecs(includeSpecs, errors, /*allowTrailingRecursion*/ false, jsonSourceFile, "include"); + } + if (excludeSpecs) { + validatedExcludeSpecs = validateSpecs(excludeSpecs, errors, /*allowTrailingRecursion*/ true, jsonSourceFile, "exclude"); + } + // Wildcard directories (provided as part of a wildcard path) are stored in a + // file map that marks whether it was a regular wildcard match (with a `*` or `?` token), + // or a recursive directory. This information is used by filesystem watchers to monitor for + // new entries in these paths. + var wildcardDirectories = getWildcardDirectories(validatedIncludeSpecs, validatedExcludeSpecs, basePath, host.useCaseSensitiveFileNames); + var spec = { filesSpecs: filesSpecs, includeSpecs: includeSpecs, excludeSpecs: excludeSpecs, validatedIncludeSpecs: validatedIncludeSpecs, validatedExcludeSpecs: validatedExcludeSpecs, wildcardDirectories: wildcardDirectories }; + return getFileNamesFromConfigSpecs(spec, basePath, options, host, extraFileExtensions); + } + /** + * Gets the file names from the provided config file specs that contain, files, include, exclude and + * other properties needed to resolve the file names + * @param spec The config file specs extracted with file names to include, wildcards to include/exclude and other details + * @param basePath The base path for any relative file specifications. + * @param options Compiler options. + * @param host The host used to resolve files and directories. + * @param extraFileExtensions optionaly file extra file extension information from host + */ + /* @internal */ + function getFileNamesFromConfigSpecs(spec, basePath, options, host, extraFileExtensions) { + if (extraFileExtensions === void 0) { extraFileExtensions = []; } + basePath = ts.normalizePath(basePath); + var keyMapper = ts.createGetCanonicalFileName(host.useCaseSensitiveFileNames); + // Literal file names (provided via the "files" array in tsconfig.json) are stored in a + // file map with a possibly case insensitive key. We use this map later when when including + // wildcard paths. + var literalFileMap = ts.createMap(); + // Wildcard paths (provided via the "includes" array in tsconfig.json) are stored in a + // file map with a possibly case insensitive key. We use this map to store paths matched + // via wildcard, and to handle extension priority. + var wildcardFileMap = ts.createMap(); + // Wildcard paths of json files (provided via the "includes" array in tsconfig.json) are stored in a + // file map with a possibly case insensitive key. We use this map to store paths matched + // via wildcard of *.json kind + var wildCardJsonFileMap = ts.createMap(); + var filesSpecs = spec.filesSpecs, validatedIncludeSpecs = spec.validatedIncludeSpecs, validatedExcludeSpecs = spec.validatedExcludeSpecs, wildcardDirectories = spec.wildcardDirectories; + // Rather than requery this for each file and filespec, we query the supported extensions + // once and store it on the expansion context. + var supportedExtensions = ts.getSupportedExtensions(options, extraFileExtensions); + var supportedExtensionsWithJsonIfResolveJsonModule = ts.getSuppoertedExtensionsWithJsonIfResolveJsonModule(options, supportedExtensions); + // Literal files are always included verbatim. An "include" or "exclude" specification cannot + // remove a literal file. + if (filesSpecs) { + for (var _i = 0, filesSpecs_1 = filesSpecs; _i < filesSpecs_1.length; _i++) { + var fileName = filesSpecs_1[_i]; + var file = ts.getNormalizedAbsolutePath(fileName, basePath); + literalFileMap.set(keyMapper(file), file); + } + } + var jsonOnlyIncludeRegexes; + if (validatedIncludeSpecs && validatedIncludeSpecs.length > 0) { + var _loop_5 = function (file) { + if (ts.fileExtensionIs(file, ".json" /* Json */)) { + // Valid only if *.json specified + if (!jsonOnlyIncludeRegexes) { + var includes = validatedIncludeSpecs.filter(function (s) { return ts.endsWith(s, ".json" /* Json */); }); + var includeFilePatterns = ts.map(ts.getRegularExpressionsForWildcards(includes, basePath, "files"), function (pattern) { return "^" + pattern + "$"; }); + jsonOnlyIncludeRegexes = includeFilePatterns ? includeFilePatterns.map(function (pattern) { return ts.getRegexFromPattern(pattern, host.useCaseSensitiveFileNames); }) : ts.emptyArray; + } + var includeIndex = ts.findIndex(jsonOnlyIncludeRegexes, function (re) { return re.test(file); }); + if (includeIndex !== -1) { + var key_1 = keyMapper(file); + if (!literalFileMap.has(key_1) && !wildCardJsonFileMap.has(key_1)) { + wildCardJsonFileMap.set(key_1, file); + } + } + return "continue"; + } + // If we have already included a literal or wildcard path with a + // higher priority extension, we should skip this file. + // + // This handles cases where we may encounter both .ts and + // .d.ts (or .js if "allowJs" is enabled) in the same + // directory when they are compilation outputs. + if (hasFileWithHigherPriorityExtension(file, literalFileMap, wildcardFileMap, supportedExtensions, keyMapper)) { + return "continue"; + } + // We may have included a wildcard path with a lower priority + // extension due to the user-defined order of entries in the + // "include" array. If there is a lower priority extension in the + // same directory, we should remove it. + removeWildcardFilesWithLowerPriorityExtension(file, wildcardFileMap, supportedExtensions, keyMapper); + var key = keyMapper(file); + if (!literalFileMap.has(key) && !wildcardFileMap.has(key)) { + wildcardFileMap.set(key, file); + } + }; + for (var _a = 0, _b = host.readDirectory(basePath, supportedExtensionsWithJsonIfResolveJsonModule, validatedExcludeSpecs, validatedIncludeSpecs, /*depth*/ undefined); _a < _b.length; _a++) { + var file = _b[_a]; + _loop_5(file); + } + } + var literalFiles = ts.arrayFrom(literalFileMap.values()); + var wildcardFiles = ts.arrayFrom(wildcardFileMap.values()); + return { + fileNames: literalFiles.concat(wildcardFiles, ts.arrayFrom(wildCardJsonFileMap.values())), + wildcardDirectories: wildcardDirectories, + spec: spec + }; + } + ts.getFileNamesFromConfigSpecs = getFileNamesFromConfigSpecs; + function validateSpecs(specs, errors, allowTrailingRecursion, jsonSourceFile, specKey) { + return specs.filter(function (spec) { + var diag = specToDiagnostic(spec, allowTrailingRecursion); + if (diag !== undefined) { + errors.push(createDiagnostic(diag, spec)); + } + return diag === undefined; + }); + function createDiagnostic(message, spec) { + var element = ts.getTsConfigPropArrayElementValue(jsonSourceFile, specKey, spec); + return element ? + ts.createDiagnosticForNodeInSourceFile(jsonSourceFile, element, message, spec) : + ts.createCompilerDiagnostic(message, spec); + } + } + function specToDiagnostic(spec, allowTrailingRecursion) { + if (!allowTrailingRecursion && invalidTrailingRecursionPattern.test(spec)) { + return ts.Diagnostics.File_specification_cannot_end_in_a_recursive_directory_wildcard_Asterisk_Asterisk_Colon_0; + } + else if (invalidDotDotAfterRecursiveWildcardPattern.test(spec)) { + return ts.Diagnostics.File_specification_cannot_contain_a_parent_directory_that_appears_after_a_recursive_directory_wildcard_Asterisk_Asterisk_Colon_0; + } + } + /** + * Gets directories in a set of include patterns that should be watched for changes. + */ + function getWildcardDirectories(include, exclude, path, useCaseSensitiveFileNames) { + // We watch a directory recursively if it contains a wildcard anywhere in a directory segment + // of the pattern: + // + // /a/b/**/d - Watch /a/b recursively to catch changes to any d in any subfolder recursively + // /a/b/*/d - Watch /a/b recursively to catch any d in any immediate subfolder, even if a new subfolder is added + // /a/b - Watch /a/b recursively to catch changes to anything in any recursive subfoler + // + // We watch a directory without recursion if it contains a wildcard in the file segment of + // the pattern: + // + // /a/b/* - Watch /a/b directly to catch any new file + // /a/b/a?z - Watch /a/b directly to catch any new file matching a?z + var rawExcludeRegex = ts.getRegularExpressionForWildcard(exclude, path, "exclude"); + var excludeRegex = rawExcludeRegex && new RegExp(rawExcludeRegex, useCaseSensitiveFileNames ? "" : "i"); + var wildcardDirectories = {}; + if (include !== undefined) { + var recursiveKeys = []; + for (var _i = 0, include_1 = include; _i < include_1.length; _i++) { + var file = include_1[_i]; + var spec = ts.normalizePath(ts.combinePaths(path, file)); + if (excludeRegex && excludeRegex.test(spec)) { + continue; + } + var match = getWildcardDirectoryFromSpec(spec, useCaseSensitiveFileNames); + if (match) { + var key = match.key, flags = match.flags; + var existingFlags = wildcardDirectories[key]; + if (existingFlags === undefined || existingFlags < flags) { + wildcardDirectories[key] = flags; + if (flags === 1 /* Recursive */) { + recursiveKeys.push(key); + } + } + } + } + // Remove any subpaths under an existing recursively watched directory. + for (var key in wildcardDirectories) { + if (ts.hasProperty(wildcardDirectories, key)) { + for (var _a = 0, recursiveKeys_1 = recursiveKeys; _a < recursiveKeys_1.length; _a++) { + var recursiveKey = recursiveKeys_1[_a]; + if (key !== recursiveKey && ts.containsPath(recursiveKey, key, path, !useCaseSensitiveFileNames)) { + delete wildcardDirectories[key]; + } + } + } + } + } + return wildcardDirectories; + } + function getWildcardDirectoryFromSpec(spec, useCaseSensitiveFileNames) { + var match = wildcardDirectoryPattern.exec(spec); + if (match) { + return { + key: useCaseSensitiveFileNames ? match[0] : ts.toFileNameLowerCase(match[0]), + flags: watchRecursivePattern.test(spec) ? 1 /* Recursive */ : 0 /* None */ + }; + } + if (ts.isImplicitGlob(spec)) { + return { key: spec, flags: 1 /* Recursive */ }; + } + return undefined; + } + /** + * Determines whether a literal or wildcard file has already been included that has a higher + * extension priority. + * + * @param file The path to the file. + * @param extensionPriority The priority of the extension. + * @param context The expansion context. + */ + function hasFileWithHigherPriorityExtension(file, literalFiles, wildcardFiles, extensions, keyMapper) { + var extensionPriority = ts.getExtensionPriority(file, extensions); + var adjustedExtensionPriority = ts.adjustExtensionPriority(extensionPriority, extensions); + for (var i = 0 /* Highest */; i < adjustedExtensionPriority; i++) { + var higherPriorityExtension = extensions[i]; + var higherPriorityPath = keyMapper(ts.changeExtension(file, higherPriorityExtension)); + if (literalFiles.has(higherPriorityPath) || wildcardFiles.has(higherPriorityPath)) { + return true; + } + } + return false; + } + /** + * Removes files included via wildcard expansion with a lower extension priority that have + * already been included. + * + * @param file The path to the file. + * @param extensionPriority The priority of the extension. + * @param context The expansion context. + */ + function removeWildcardFilesWithLowerPriorityExtension(file, wildcardFiles, extensions, keyMapper) { + var extensionPriority = ts.getExtensionPriority(file, extensions); + var nextExtensionPriority = ts.getNextLowestExtensionPriority(extensionPriority, extensions); + for (var i = nextExtensionPriority; i < extensions.length; i++) { + var lowerPriorityExtension = extensions[i]; + var lowerPriorityPath = keyMapper(ts.changeExtension(file, lowerPriorityExtension)); + wildcardFiles.delete(lowerPriorityPath); + } + } + /** + * Produces a cleaned version of compiler options with personally identifying info (aka, paths) removed. + * Also converts enum values back to strings. + */ + /* @internal */ + function convertCompilerOptionsForTelemetry(opts) { + var out = {}; + for (var key in opts) { + if (opts.hasOwnProperty(key)) { + var type = getOptionFromName(key); + if (type !== undefined) { // Ignore unknown options + out[key] = getOptionValueWithEmptyStrings(opts[key], type); + } + } + } + return out; + } + ts.convertCompilerOptionsForTelemetry = convertCompilerOptionsForTelemetry; + function getOptionValueWithEmptyStrings(value, option) { + switch (option.type) { + case "object": // "paths". Can't get any useful information from the value since we blank out strings, so just return "". + return ""; + case "string": // Could be any arbitrary string -- use empty string instead. + return ""; + case "number": // Allow numbers, but be sure to check it's actually a number. + return typeof value === "number" ? value : ""; + case "boolean": + return typeof value === "boolean" ? value : ""; + case "list": + var elementType_1 = option.element; + return ts.isArray(value) ? value.map(function (v) { return getOptionValueWithEmptyStrings(v, elementType_1); }) : ""; + default: + return ts.forEachEntry(option.type, function (optionEnumValue, optionStringValue) { + if (optionEnumValue === value) { + return optionStringValue; + } + }); // TODO: GH#18217 + } + } +})(ts || (ts = {})); +var ts; +(function (ts) { + function trace(host) { + host.trace(ts.formatMessage.apply(undefined, arguments)); + } + ts.trace = trace; + /* @internal */ + function isTraceEnabled(compilerOptions, host) { + return !!compilerOptions.traceResolution && host.trace !== undefined; + } + ts.isTraceEnabled = isTraceEnabled; + function withPackageId(packageInfo, r) { + var packageId; + if (r && packageInfo) { + var packageJsonContent = packageInfo.packageJsonContent; + if (typeof packageJsonContent.name === "string" && typeof packageJsonContent.version === "string") { + packageId = { + name: packageJsonContent.name, + subModuleName: r.path.slice(packageInfo.packageDirectory.length + ts.directorySeparator.length), + version: packageJsonContent.version + }; + } + } + return r && { path: r.path, extension: r.ext, packageId: packageId }; + } + function noPackageId(r) { + return withPackageId(/*packageInfo*/ undefined, r); + } + function removeIgnoredPackageId(r) { + if (r) { + ts.Debug.assert(r.packageId === undefined); + return { path: r.path, ext: r.extension }; + } + } + /** + * Kinds of file that we are currently looking for. + * Typically there is one pass with Extensions.TypeScript, then a second pass with Extensions.JavaScript. + */ + var Extensions; + (function (Extensions) { + Extensions[Extensions["TypeScript"] = 0] = "TypeScript"; + Extensions[Extensions["JavaScript"] = 1] = "JavaScript"; + Extensions[Extensions["Json"] = 2] = "Json"; + Extensions[Extensions["TSConfig"] = 3] = "TSConfig"; + Extensions[Extensions["DtsOnly"] = 4] = "DtsOnly"; /** Only '.d.ts' */ + })(Extensions || (Extensions = {})); + /** Used with `Extensions.DtsOnly` to extract the path from TypeScript results. */ + function resolvedTypeScriptOnly(resolved) { + if (!resolved) { + return undefined; + } + ts.Debug.assert(ts.extensionIsTS(resolved.extension)); + return { fileName: resolved.path, packageId: resolved.packageId }; + } + function createResolvedModuleWithFailedLookupLocations(resolved, isExternalLibraryImport, failedLookupLocations, resultFromCache) { + var _a; + if (resultFromCache) { + (_a = resultFromCache.failedLookupLocations).push.apply(_a, failedLookupLocations); + return resultFromCache; + } + return { + resolvedModule: resolved && { resolvedFileName: resolved.path, originalPath: resolved.originalPath === true ? undefined : resolved.originalPath, extension: resolved.extension, isExternalLibraryImport: isExternalLibraryImport, packageId: resolved.packageId }, + failedLookupLocations: failedLookupLocations + }; + } + function readPackageJsonField(jsonContent, fieldName, typeOfTag, state) { + if (!ts.hasProperty(jsonContent, fieldName)) { + if (state.traceEnabled) { + trace(state.host, ts.Diagnostics.package_json_does_not_have_a_0_field, fieldName); + } + return; + } + var value = jsonContent[fieldName]; + if (typeof value !== typeOfTag || value === null) { // eslint-disable-line no-null/no-null + if (state.traceEnabled) { + // eslint-disable-next-line no-null/no-null + trace(state.host, ts.Diagnostics.Expected_type_of_0_field_in_package_json_to_be_1_got_2, fieldName, typeOfTag, value === null ? "null" : typeof value); + } + return; + } + return value; + } + function readPackageJsonPathField(jsonContent, fieldName, baseDirectory, state) { + var fileName = readPackageJsonField(jsonContent, fieldName, "string", state); + if (fileName === undefined) { + return; + } + if (!fileName) { + if (state.traceEnabled) { + trace(state.host, ts.Diagnostics.package_json_had_a_falsy_0_field, fieldName); + } + return; + } + var path = ts.normalizePath(ts.combinePaths(baseDirectory, fileName)); + if (state.traceEnabled) { + trace(state.host, ts.Diagnostics.package_json_has_0_field_1_that_references_2, fieldName, fileName, path); + } + return path; + } + function readPackageJsonTypesFields(jsonContent, baseDirectory, state) { + return readPackageJsonPathField(jsonContent, "typings", baseDirectory, state) + || readPackageJsonPathField(jsonContent, "types", baseDirectory, state); + } + function readPackageJsonTSConfigField(jsonContent, baseDirectory, state) { + return readPackageJsonPathField(jsonContent, "tsconfig", baseDirectory, state); + } + function readPackageJsonMainField(jsonContent, baseDirectory, state) { + return readPackageJsonPathField(jsonContent, "main", baseDirectory, state); + } + function readPackageJsonTypesVersionsField(jsonContent, state) { + var typesVersions = readPackageJsonField(jsonContent, "typesVersions", "object", state); + if (typesVersions === undefined) + return; + if (state.traceEnabled) { + trace(state.host, ts.Diagnostics.package_json_has_a_typesVersions_field_with_version_specific_path_mappings); + } + return typesVersions; + } + function readPackageJsonTypesVersionPaths(jsonContent, state) { + var typesVersions = readPackageJsonTypesVersionsField(jsonContent, state); + if (typesVersions === undefined) + return; + if (state.traceEnabled) { + for (var key in typesVersions) { + if (ts.hasProperty(typesVersions, key) && !ts.VersionRange.tryParse(key)) { + trace(state.host, ts.Diagnostics.package_json_has_a_typesVersions_entry_0_that_is_not_a_valid_semver_range, key); + } + } + } + var result = getPackageJsonTypesVersionsPaths(typesVersions); + if (!result) { + if (state.traceEnabled) { + trace(state.host, ts.Diagnostics.package_json_does_not_have_a_typesVersions_entry_that_matches_version_0, ts.versionMajorMinor); + } + return; + } + var bestVersionKey = result.version, bestVersionPaths = result.paths; + if (typeof bestVersionPaths !== "object") { + if (state.traceEnabled) { + trace(state.host, ts.Diagnostics.Expected_type_of_0_field_in_package_json_to_be_1_got_2, "typesVersions['" + bestVersionKey + "']", "object", typeof bestVersionPaths); + } + return; + } + return result; + } + var typeScriptVersion; + /* @internal */ + function getPackageJsonTypesVersionsPaths(typesVersions) { + if (!typeScriptVersion) + typeScriptVersion = new ts.Version(ts.version); + for (var key in typesVersions) { + if (!ts.hasProperty(typesVersions, key)) + continue; + var keyRange = ts.VersionRange.tryParse(key); + if (keyRange === undefined) { + continue; + } + // return the first entry whose range matches the current compiler version. + if (keyRange.test(typeScriptVersion)) { + return { version: key, paths: typesVersions[key] }; + } + } + } + ts.getPackageJsonTypesVersionsPaths = getPackageJsonTypesVersionsPaths; + function getEffectiveTypeRoots(options, host) { + if (options.typeRoots) { + return options.typeRoots; + } + var currentDirectory; + if (options.configFilePath) { + currentDirectory = ts.getDirectoryPath(options.configFilePath); + } + else if (host.getCurrentDirectory) { + currentDirectory = host.getCurrentDirectory(); + } + if (currentDirectory !== undefined) { + return getDefaultTypeRoots(currentDirectory, host); + } + } + ts.getEffectiveTypeRoots = getEffectiveTypeRoots; + /** + * Returns the path to every node_modules/@types directory from some ancestor directory. + * Returns undefined if there are none. + */ + function getDefaultTypeRoots(currentDirectory, host) { + if (!host.directoryExists) { + return [ts.combinePaths(currentDirectory, nodeModulesAtTypes)]; + // And if it doesn't exist, tough. + } + var typeRoots; + ts.forEachAncestorDirectory(ts.normalizePath(currentDirectory), function (directory) { + var atTypes = ts.combinePaths(directory, nodeModulesAtTypes); + if (host.directoryExists(atTypes)) { + (typeRoots || (typeRoots = [])).push(atTypes); + } + return undefined; + }); + return typeRoots; + } + var nodeModulesAtTypes = ts.combinePaths("node_modules", "@types"); + /** + * @param {string | undefined} containingFile - file that contains type reference directive, can be undefined if containing file is unknown. + * This is possible in case if resolution is performed for directives specified via 'types' parameter. In this case initial path for secondary lookups + * is assumed to be the same as root directory of the project. + */ + function resolveTypeReferenceDirective(typeReferenceDirectiveName, containingFile, options, host, redirectedReference) { + var traceEnabled = isTraceEnabled(options, host); + if (redirectedReference) { + options = redirectedReference.commandLine.options; + } + var failedLookupLocations = []; + var moduleResolutionState = { compilerOptions: options, host: host, traceEnabled: traceEnabled, failedLookupLocations: failedLookupLocations }; + var typeRoots = getEffectiveTypeRoots(options, host); + if (traceEnabled) { + if (containingFile === undefined) { + if (typeRoots === undefined) { + trace(host, ts.Diagnostics.Resolving_type_reference_directive_0_containing_file_not_set_root_directory_not_set, typeReferenceDirectiveName); + } + else { + trace(host, ts.Diagnostics.Resolving_type_reference_directive_0_containing_file_not_set_root_directory_1, typeReferenceDirectiveName, typeRoots); + } + } + else { + if (typeRoots === undefined) { + trace(host, ts.Diagnostics.Resolving_type_reference_directive_0_containing_file_1_root_directory_not_set, typeReferenceDirectiveName, containingFile); + } + else { + trace(host, ts.Diagnostics.Resolving_type_reference_directive_0_containing_file_1_root_directory_2, typeReferenceDirectiveName, containingFile, typeRoots); + } + } + if (redirectedReference) { + trace(host, ts.Diagnostics.Using_compiler_options_of_project_reference_redirect_0, redirectedReference.sourceFile.fileName); + } + } + var resolved = primaryLookup(); + var primary = true; + if (!resolved) { + resolved = secondaryLookup(); + primary = false; + } + var resolvedTypeReferenceDirective; + if (resolved) { + var fileName = resolved.fileName, packageId = resolved.packageId; + var resolvedFileName = options.preserveSymlinks ? fileName : realPath(fileName, host, traceEnabled); + if (traceEnabled) { + if (packageId) { + trace(host, ts.Diagnostics.Type_reference_directive_0_was_successfully_resolved_to_1_with_Package_ID_2_primary_Colon_3, typeReferenceDirectiveName, resolvedFileName, ts.packageIdToString(packageId), primary); + } + else { + trace(host, ts.Diagnostics.Type_reference_directive_0_was_successfully_resolved_to_1_primary_Colon_2, typeReferenceDirectiveName, resolvedFileName, primary); + } + } + resolvedTypeReferenceDirective = { primary: primary, resolvedFileName: resolvedFileName, packageId: packageId, isExternalLibraryImport: pathContainsNodeModules(fileName) }; + } + return { resolvedTypeReferenceDirective: resolvedTypeReferenceDirective, failedLookupLocations: failedLookupLocations }; + function primaryLookup() { + // Check primary library paths + if (typeRoots && typeRoots.length) { + if (traceEnabled) { + trace(host, ts.Diagnostics.Resolving_with_primary_search_path_0, typeRoots.join(", ")); + } + return ts.firstDefined(typeRoots, function (typeRoot) { + var candidate = ts.combinePaths(typeRoot, typeReferenceDirectiveName); + var candidateDirectory = ts.getDirectoryPath(candidate); + var directoryExists = ts.directoryProbablyExists(candidateDirectory, host); + if (!directoryExists && traceEnabled) { + trace(host, ts.Diagnostics.Directory_0_does_not_exist_skipping_all_lookups_in_it, candidateDirectory); + } + return resolvedTypeScriptOnly(loadNodeModuleFromDirectory(Extensions.DtsOnly, candidate, !directoryExists, moduleResolutionState)); + }); + } + else { + if (traceEnabled) { + trace(host, ts.Diagnostics.Root_directory_cannot_be_determined_skipping_primary_search_paths); + } + } + } + function secondaryLookup() { + var initialLocationForSecondaryLookup = containingFile && ts.getDirectoryPath(containingFile); + if (initialLocationForSecondaryLookup !== undefined) { + // check secondary locations + if (traceEnabled) { + trace(host, ts.Diagnostics.Looking_up_in_node_modules_folder_initial_location_0, initialLocationForSecondaryLookup); + } + var result = void 0; + if (!ts.isExternalModuleNameRelative(typeReferenceDirectiveName)) { + var searchResult = loadModuleFromNearestNodeModulesDirectory(Extensions.DtsOnly, typeReferenceDirectiveName, initialLocationForSecondaryLookup, moduleResolutionState, /*cache*/ undefined, /*redirectedReference*/ undefined); + result = searchResult && searchResult.value; + } + else { + var candidate = ts.normalizePathAndParts(ts.combinePaths(initialLocationForSecondaryLookup, typeReferenceDirectiveName)).path; + result = nodeLoadModuleByRelativeName(Extensions.DtsOnly, candidate, /*onlyRecordFailures*/ false, moduleResolutionState, /*considerPackageJson*/ true); + } + var resolvedFile = resolvedTypeScriptOnly(result); + if (!resolvedFile && traceEnabled) { + trace(host, ts.Diagnostics.Type_reference_directive_0_was_not_resolved, typeReferenceDirectiveName); + } + return resolvedFile; + } + else { + if (traceEnabled) { + trace(host, ts.Diagnostics.Containing_file_is_not_specified_and_root_directory_cannot_be_determined_skipping_lookup_in_node_modules_folder); + } + } + } + } + ts.resolveTypeReferenceDirective = resolveTypeReferenceDirective; + /** + * Given a set of options, returns the set of type directive names + * that should be included for this program automatically. + * This list could either come from the config file, + * or from enumerating the types root + initial secondary types lookup location. + * More type directives might appear in the program later as a result of loading actual source files; + * this list is only the set of defaults that are implicitly included. + */ + function getAutomaticTypeDirectiveNames(options, host) { + // Use explicit type list from tsconfig.json + if (options.types) { + return options.types; + } + // Walk the primary type lookup locations + var result = []; + if (host.directoryExists && host.getDirectories) { + var typeRoots = getEffectiveTypeRoots(options, host); + if (typeRoots) { + for (var _i = 0, typeRoots_1 = typeRoots; _i < typeRoots_1.length; _i++) { + var root = typeRoots_1[_i]; + if (host.directoryExists(root)) { + for (var _a = 0, _b = host.getDirectories(root); _a < _b.length; _a++) { + var typeDirectivePath = _b[_a]; + var normalized = ts.normalizePath(typeDirectivePath); + var packageJsonPath = ts.combinePaths(root, normalized, "package.json"); + // `types-publisher` sometimes creates packages with `"typings": null` for packages that don't provide their own types. + // See `createNotNeededPackageJSON` in the types-publisher` repo. + // eslint-disable-next-line no-null/no-null + var isNotNeededPackage = host.fileExists(packageJsonPath) && ts.readJson(packageJsonPath, host).typings === null; + if (!isNotNeededPackage) { + var baseFileName = ts.getBaseFileName(normalized); + // At this stage, skip results with leading dot. + if (baseFileName.charCodeAt(0) !== 46 /* dot */) { + // Return just the type directive names + result.push(baseFileName); + } + } + } + } + } + } + } + return result; + } + ts.getAutomaticTypeDirectiveNames = getAutomaticTypeDirectiveNames; + function createModuleResolutionCache(currentDirectory, getCanonicalFileName, options) { + return createModuleResolutionCacheWithMaps(createCacheWithRedirects(options), createCacheWithRedirects(options), currentDirectory, getCanonicalFileName); + } + ts.createModuleResolutionCache = createModuleResolutionCache; + /*@internal*/ + function createCacheWithRedirects(options) { + var ownMap = ts.createMap(); + var redirectsMap = ts.createMap(); + return { + ownMap: ownMap, + redirectsMap: redirectsMap, + getOrCreateMapOfCacheRedirects: getOrCreateMapOfCacheRedirects, + clear: clear, + setOwnOptions: setOwnOptions, + setOwnMap: setOwnMap + }; + function setOwnOptions(newOptions) { + options = newOptions; + } + function setOwnMap(newOwnMap) { + ownMap = newOwnMap; + } + function getOrCreateMapOfCacheRedirects(redirectedReference) { + if (!redirectedReference) { + return ownMap; + } + var path = redirectedReference.sourceFile.path; + var redirects = redirectsMap.get(path); + if (!redirects) { + // Reuse map if redirected reference map uses same resolution + redirects = !options || ts.optionsHaveModuleResolutionChanges(options, redirectedReference.commandLine.options) ? ts.createMap() : ownMap; + redirectsMap.set(path, redirects); + } + return redirects; + } + function clear() { + ownMap.clear(); + redirectsMap.clear(); + } + } + ts.createCacheWithRedirects = createCacheWithRedirects; + /*@internal*/ + function createModuleResolutionCacheWithMaps(directoryToModuleNameMap, moduleNameToDirectoryMap, currentDirectory, getCanonicalFileName) { + return { getOrCreateCacheForDirectory: getOrCreateCacheForDirectory, getOrCreateCacheForModuleName: getOrCreateCacheForModuleName, directoryToModuleNameMap: directoryToModuleNameMap, moduleNameToDirectoryMap: moduleNameToDirectoryMap }; + function getOrCreateCacheForDirectory(directoryName, redirectedReference) { + var path = ts.toPath(directoryName, currentDirectory, getCanonicalFileName); + return getOrCreateCache(directoryToModuleNameMap, redirectedReference, path, ts.createMap); + } + function getOrCreateCacheForModuleName(nonRelativeModuleName, redirectedReference) { + ts.Debug.assert(!ts.isExternalModuleNameRelative(nonRelativeModuleName)); + return getOrCreateCache(moduleNameToDirectoryMap, redirectedReference, nonRelativeModuleName, createPerModuleNameCache); + } + function getOrCreateCache(cacheWithRedirects, redirectedReference, key, create) { + var cache = cacheWithRedirects.getOrCreateMapOfCacheRedirects(redirectedReference); + var result = cache.get(key); + if (!result) { + result = create(); + cache.set(key, result); + } + return result; + } + function createPerModuleNameCache() { + var directoryPathMap = ts.createMap(); + return { get: get, set: set }; + function get(directory) { + return directoryPathMap.get(ts.toPath(directory, currentDirectory, getCanonicalFileName)); + } + /** + * At first this function add entry directory -> module resolution result to the table. + * Then it computes the set of parent folders for 'directory' that should have the same module resolution result + * and for every parent folder in set it adds entry: parent -> module resolution. . + * Lets say we first directory name: /a/b/c/d/e and resolution result is: /a/b/bar.ts. + * Set of parent folders that should have the same result will be: + * [ + * /a/b/c/d, /a/b/c, /a/b + * ] + * this means that request for module resolution from file in any of these folder will be immediately found in cache. + */ + function set(directory, result) { + var path = ts.toPath(directory, currentDirectory, getCanonicalFileName); + // if entry is already in cache do nothing + if (directoryPathMap.has(path)) { + return; + } + directoryPathMap.set(path, result); + var resolvedFileName = result.resolvedModule && + (result.resolvedModule.originalPath || result.resolvedModule.resolvedFileName); + // find common prefix between directory and resolved file name + // this common prefix should be the shortest path that has the same resolution + // directory: /a/b/c/d/e + // resolvedFileName: /a/b/foo.d.ts + // commonPrefix: /a/b + // for failed lookups cache the result for every directory up to root + var commonPrefix = resolvedFileName && getCommonPrefix(path, resolvedFileName); + var current = path; + while (current !== commonPrefix) { + var parent = ts.getDirectoryPath(current); + if (parent === current || directoryPathMap.has(parent)) { + break; + } + directoryPathMap.set(parent, result); + current = parent; + } + } + function getCommonPrefix(directory, resolution) { + var resolutionDirectory = ts.toPath(ts.getDirectoryPath(resolution), currentDirectory, getCanonicalFileName); + // find first position where directory and resolution differs + var i = 0; + var limit = Math.min(directory.length, resolutionDirectory.length); + while (i < limit && directory.charCodeAt(i) === resolutionDirectory.charCodeAt(i)) { + i++; + } + if (i === directory.length && (resolutionDirectory.length === i || resolutionDirectory[i] === ts.directorySeparator)) { + return directory; + } + var rootLength = ts.getRootLength(directory); + if (i < rootLength) { + return undefined; + } + var sep = directory.lastIndexOf(ts.directorySeparator, i - 1); + if (sep === -1) { + return undefined; + } + return directory.substr(0, Math.max(sep, rootLength)); + } + } + } + ts.createModuleResolutionCacheWithMaps = createModuleResolutionCacheWithMaps; + function resolveModuleNameFromCache(moduleName, containingFile, cache) { + var containingDirectory = ts.getDirectoryPath(containingFile); + var perFolderCache = cache && cache.getOrCreateCacheForDirectory(containingDirectory); + return perFolderCache && perFolderCache.get(moduleName); + } + ts.resolveModuleNameFromCache = resolveModuleNameFromCache; + function resolveModuleName(moduleName, containingFile, compilerOptions, host, cache, redirectedReference) { + var traceEnabled = isTraceEnabled(compilerOptions, host); + if (redirectedReference) { + compilerOptions = redirectedReference.commandLine.options; + } + if (traceEnabled) { + trace(host, ts.Diagnostics.Resolving_module_0_from_1, moduleName, containingFile); + if (redirectedReference) { + trace(host, ts.Diagnostics.Using_compiler_options_of_project_reference_redirect_0, redirectedReference.sourceFile.fileName); + } + } + var containingDirectory = ts.getDirectoryPath(containingFile); + var perFolderCache = cache && cache.getOrCreateCacheForDirectory(containingDirectory, redirectedReference); + var result = perFolderCache && perFolderCache.get(moduleName); + if (result) { + if (traceEnabled) { + trace(host, ts.Diagnostics.Resolution_for_module_0_was_found_in_cache_from_location_1, moduleName, containingDirectory); + } + } + else { + var moduleResolution = compilerOptions.moduleResolution; + if (moduleResolution === undefined) { + moduleResolution = ts.getEmitModuleKind(compilerOptions) === ts.ModuleKind.CommonJS ? ts.ModuleResolutionKind.NodeJs : ts.ModuleResolutionKind.Classic; + if (traceEnabled) { + trace(host, ts.Diagnostics.Module_resolution_kind_is_not_specified_using_0, ts.ModuleResolutionKind[moduleResolution]); + } + } + else { + if (traceEnabled) { + trace(host, ts.Diagnostics.Explicitly_specified_module_resolution_kind_Colon_0, ts.ModuleResolutionKind[moduleResolution]); + } + } + ts.perfLogger.logStartResolveModule(moduleName /* , containingFile, ModuleResolutionKind[moduleResolution]*/); + switch (moduleResolution) { + case ts.ModuleResolutionKind.NodeJs: + result = nodeModuleNameResolver(moduleName, containingFile, compilerOptions, host, cache, redirectedReference); + break; + case ts.ModuleResolutionKind.Classic: + result = classicNameResolver(moduleName, containingFile, compilerOptions, host, cache, redirectedReference); + break; + default: + return ts.Debug.fail("Unexpected moduleResolution: " + moduleResolution); + } + if (result && result.resolvedModule) + ts.perfLogger.logInfoEvent("Module \"" + moduleName + "\" resolved to \"" + result.resolvedModule.resolvedFileName + "\""); + ts.perfLogger.logStopResolveModule((result && result.resolvedModule) ? "" + result.resolvedModule.resolvedFileName : "null"); + if (perFolderCache) { + perFolderCache.set(moduleName, result); + if (!ts.isExternalModuleNameRelative(moduleName)) { + // put result in per-module name cache + cache.getOrCreateCacheForModuleName(moduleName, redirectedReference).set(containingDirectory, result); + } + } + } + if (traceEnabled) { + if (result.resolvedModule) { + if (result.resolvedModule.packageId) { + trace(host, ts.Diagnostics.Module_name_0_was_successfully_resolved_to_1_with_Package_ID_2, moduleName, result.resolvedModule.resolvedFileName, ts.packageIdToString(result.resolvedModule.packageId)); + } + else { + trace(host, ts.Diagnostics.Module_name_0_was_successfully_resolved_to_1, moduleName, result.resolvedModule.resolvedFileName); + } + } + else { + trace(host, ts.Diagnostics.Module_name_0_was_not_resolved, moduleName); + } + } + return result; + } + ts.resolveModuleName = resolveModuleName; + /** + * Any module resolution kind can be augmented with optional settings: 'baseUrl', 'paths' and 'rootDirs' - they are used to + * mitigate differences between design time structure of the project and its runtime counterpart so the same import name + * can be resolved successfully by TypeScript compiler and runtime module loader. + * If these settings are set then loading procedure will try to use them to resolve module name and it can of failure it will + * fallback to standard resolution routine. + * + * - baseUrl - this setting controls how non-relative module names are resolved. If this setting is specified then non-relative + * names will be resolved relative to baseUrl: i.e. if baseUrl is '/a/b' then candidate location to resolve module name 'c/d' will + * be '/a/b/c/d' + * - paths - this setting can only be used when baseUrl is specified. allows to tune how non-relative module names + * will be resolved based on the content of the module name. + * Structure of 'paths' compiler options + * 'paths': { + * pattern-1: [...substitutions], + * pattern-2: [...substitutions], + * ... + * pattern-n: [...substitutions] + * } + * Pattern here is a string that can contain zero or one '*' character. During module resolution module name will be matched against + * all patterns in the list. Matching for patterns that don't contain '*' means that module name must be equal to pattern respecting the case. + * If pattern contains '*' then to match pattern "*" module name must start with the and end with . + * denotes part of the module name between and . + * If module name can be matches with multiple patterns then pattern with the longest prefix will be picked. + * After selecting pattern we'll use list of substitutions to get candidate locations of the module and the try to load module + * from the candidate location. + * Substitution is a string that can contain zero or one '*'. To get candidate location from substitution we'll pick every + * substitution in the list and replace '*' with string. If candidate location is not rooted it + * will be converted to absolute using baseUrl. + * For example: + * baseUrl: /a/b/c + * "paths": { + * // match all module names + * "*": [ + * "*", // use matched name as is, + * // will be looked as /a/b/c/ + * + * "folder1/*" // substitution will convert matched name to 'folder1/', + * // since it is not rooted then final candidate location will be /a/b/c/folder1/ + * ], + * // match module names that start with 'components/' + * "components/*": [ "/root/components/*" ] // substitution will convert /components/folder1/ to '/root/components/folder1/', + * // it is rooted so it will be final candidate location + * } + * + * 'rootDirs' allows the project to be spreaded across multiple locations and resolve modules with relative names as if + * they were in the same location. For example lets say there are two files + * '/local/src/content/file1.ts' + * '/shared/components/contracts/src/content/protocols/file2.ts' + * After bundling content of '/shared/components/contracts/src' will be merged with '/local/src' so + * if file1 has the following import 'import {x} from "./protocols/file2"' it will be resolved successfully in runtime. + * 'rootDirs' provides the way to tell compiler that in order to get the whole project it should behave as if content of all + * root dirs were merged together. + * I.e. for the example above 'rootDirs' will have two entries: [ '/local/src', '/shared/components/contracts/src' ]. + * Compiler will first convert './protocols/file2' into absolute path relative to the location of containing file: + * '/local/src/content/protocols/file2' and try to load it - failure. + * Then it will search 'rootDirs' looking for a longest matching prefix of this absolute path and if such prefix is found - absolute path will + * be converted to a path relative to found rootDir entry './content/protocols/file2' (*). As a last step compiler will check all remaining + * entries in 'rootDirs', use them to build absolute path out of (*) and try to resolve module from this location. + */ + function tryLoadModuleUsingOptionalResolutionSettings(extensions, moduleName, containingDirectory, loader, state) { + var resolved = tryLoadModuleUsingPathsIfEligible(extensions, moduleName, loader, state); + if (resolved) + return resolved.value; + if (!ts.isExternalModuleNameRelative(moduleName)) { + return tryLoadModuleUsingBaseUrl(extensions, moduleName, loader, state); + } + else { + return tryLoadModuleUsingRootDirs(extensions, moduleName, containingDirectory, loader, state); + } + } + function tryLoadModuleUsingPathsIfEligible(extensions, moduleName, loader, state) { + var _a = state.compilerOptions, baseUrl = _a.baseUrl, paths = _a.paths; + if (baseUrl && paths && !ts.pathIsRelative(moduleName)) { + if (state.traceEnabled) { + trace(state.host, ts.Diagnostics.baseUrl_option_is_set_to_0_using_this_value_to_resolve_non_relative_module_name_1, baseUrl, moduleName); + trace(state.host, ts.Diagnostics.paths_option_is_specified_looking_for_a_pattern_to_match_module_name_0, moduleName); + } + return tryLoadModuleUsingPaths(extensions, moduleName, baseUrl, paths, loader, /*onlyRecordFailures*/ false, state); + } + } + function tryLoadModuleUsingRootDirs(extensions, moduleName, containingDirectory, loader, state) { + if (!state.compilerOptions.rootDirs) { + return undefined; + } + if (state.traceEnabled) { + trace(state.host, ts.Diagnostics.rootDirs_option_is_set_using_it_to_resolve_relative_module_name_0, moduleName); + } + var candidate = ts.normalizePath(ts.combinePaths(containingDirectory, moduleName)); + var matchedRootDir; + var matchedNormalizedPrefix; + for (var _i = 0, _a = state.compilerOptions.rootDirs; _i < _a.length; _i++) { + var rootDir = _a[_i]; + // rootDirs are expected to be absolute + // in case of tsconfig.json this will happen automatically - compiler will expand relative names + // using location of tsconfig.json as base location + var normalizedRoot = ts.normalizePath(rootDir); + if (!ts.endsWith(normalizedRoot, ts.directorySeparator)) { + normalizedRoot += ts.directorySeparator; + } + var isLongestMatchingPrefix = ts.startsWith(candidate, normalizedRoot) && + (matchedNormalizedPrefix === undefined || matchedNormalizedPrefix.length < normalizedRoot.length); + if (state.traceEnabled) { + trace(state.host, ts.Diagnostics.Checking_if_0_is_the_longest_matching_prefix_for_1_2, normalizedRoot, candidate, isLongestMatchingPrefix); + } + if (isLongestMatchingPrefix) { + matchedNormalizedPrefix = normalizedRoot; + matchedRootDir = rootDir; + } + } + if (matchedNormalizedPrefix) { + if (state.traceEnabled) { + trace(state.host, ts.Diagnostics.Longest_matching_prefix_for_0_is_1, candidate, matchedNormalizedPrefix); + } + var suffix = candidate.substr(matchedNormalizedPrefix.length); + // first - try to load from a initial location + if (state.traceEnabled) { + trace(state.host, ts.Diagnostics.Loading_0_from_the_root_dir_1_candidate_location_2, suffix, matchedNormalizedPrefix, candidate); + } + var resolvedFileName = loader(extensions, candidate, !ts.directoryProbablyExists(containingDirectory, state.host), state); + if (resolvedFileName) { + return resolvedFileName; + } + if (state.traceEnabled) { + trace(state.host, ts.Diagnostics.Trying_other_entries_in_rootDirs); + } + // then try to resolve using remaining entries in rootDirs + for (var _b = 0, _c = state.compilerOptions.rootDirs; _b < _c.length; _b++) { + var rootDir = _c[_b]; + if (rootDir === matchedRootDir) { + // skip the initially matched entry + continue; + } + var candidate_1 = ts.combinePaths(ts.normalizePath(rootDir), suffix); + if (state.traceEnabled) { + trace(state.host, ts.Diagnostics.Loading_0_from_the_root_dir_1_candidate_location_2, suffix, rootDir, candidate_1); + } + var baseDirectory = ts.getDirectoryPath(candidate_1); + var resolvedFileName_1 = loader(extensions, candidate_1, !ts.directoryProbablyExists(baseDirectory, state.host), state); + if (resolvedFileName_1) { + return resolvedFileName_1; + } + } + if (state.traceEnabled) { + trace(state.host, ts.Diagnostics.Module_resolution_using_rootDirs_has_failed); + } + } + return undefined; + } + function tryLoadModuleUsingBaseUrl(extensions, moduleName, loader, state) { + var baseUrl = state.compilerOptions.baseUrl; + if (!baseUrl) { + return undefined; + } + if (state.traceEnabled) { + trace(state.host, ts.Diagnostics.baseUrl_option_is_set_to_0_using_this_value_to_resolve_non_relative_module_name_1, baseUrl, moduleName); + } + var candidate = ts.normalizePath(ts.combinePaths(baseUrl, moduleName)); + if (state.traceEnabled) { + trace(state.host, ts.Diagnostics.Resolving_module_name_0_relative_to_base_url_1_2, moduleName, baseUrl, candidate); + } + return loader(extensions, candidate, !ts.directoryProbablyExists(ts.getDirectoryPath(candidate), state.host), state); + } + /** + * Expose resolution logic to allow us to use Node module resolution logic from arbitrary locations. + * No way to do this with `require()`: https://github.com/nodejs/node/issues/5963 + * Throws an error if the module can't be resolved. + */ + /* @internal */ + function resolveJSModule(moduleName, initialDir, host) { + var _a = tryResolveJSModuleWorker(moduleName, initialDir, host), resolvedModule = _a.resolvedModule, failedLookupLocations = _a.failedLookupLocations; + if (!resolvedModule) { + throw new Error("Could not resolve JS module '" + moduleName + "' starting at '" + initialDir + "'. Looked in: " + failedLookupLocations.join(", ")); + } + return resolvedModule.resolvedFileName; + } + ts.resolveJSModule = resolveJSModule; + /* @internal */ + function tryResolveJSModule(moduleName, initialDir, host) { + var resolvedModule = tryResolveJSModuleWorker(moduleName, initialDir, host).resolvedModule; + return resolvedModule && resolvedModule.resolvedFileName; + } + ts.tryResolveJSModule = tryResolveJSModule; + var jsOnlyExtensions = [Extensions.JavaScript]; + var tsExtensions = [Extensions.TypeScript, Extensions.JavaScript]; + var tsPlusJsonExtensions = __spreadArrays(tsExtensions, [Extensions.Json]); + var tsconfigExtensions = [Extensions.TSConfig]; + function tryResolveJSModuleWorker(moduleName, initialDir, host) { + return nodeModuleNameResolverWorker(moduleName, initialDir, { moduleResolution: ts.ModuleResolutionKind.NodeJs, allowJs: true }, host, /*cache*/ undefined, jsOnlyExtensions, /*redirectedReferences*/ undefined); + } + function nodeModuleNameResolver(moduleName, containingFile, compilerOptions, host, cache, redirectedReference, lookupConfig) { + return nodeModuleNameResolverWorker(moduleName, ts.getDirectoryPath(containingFile), compilerOptions, host, cache, lookupConfig ? tsconfigExtensions : (compilerOptions.resolveJsonModule ? tsPlusJsonExtensions : tsExtensions), redirectedReference); + } + ts.nodeModuleNameResolver = nodeModuleNameResolver; + function nodeModuleNameResolverWorker(moduleName, containingDirectory, compilerOptions, host, cache, extensions, redirectedReference) { + var _a, _b; + var traceEnabled = isTraceEnabled(compilerOptions, host); + var failedLookupLocations = []; + var state = { compilerOptions: compilerOptions, host: host, traceEnabled: traceEnabled, failedLookupLocations: failedLookupLocations }; + var result = ts.forEach(extensions, function (ext) { return tryResolve(ext); }); + return createResolvedModuleWithFailedLookupLocations((_a = result === null || result === void 0 ? void 0 : result.value) === null || _a === void 0 ? void 0 : _a.resolved, (_b = result === null || result === void 0 ? void 0 : result.value) === null || _b === void 0 ? void 0 : _b.isExternalLibraryImport, failedLookupLocations, state.resultFromCache); + function tryResolve(extensions) { + var loader = function (extensions, candidate, onlyRecordFailures, state) { return nodeLoadModuleByRelativeName(extensions, candidate, onlyRecordFailures, state, /*considerPackageJson*/ true); }; + var resolved = tryLoadModuleUsingOptionalResolutionSettings(extensions, moduleName, containingDirectory, loader, state); + if (resolved) { + return toSearchResult({ resolved: resolved, isExternalLibraryImport: pathContainsNodeModules(resolved.path) }); + } + if (!ts.isExternalModuleNameRelative(moduleName)) { + if (traceEnabled) { + trace(host, ts.Diagnostics.Loading_module_0_from_node_modules_folder_target_file_type_1, moduleName, Extensions[extensions]); + } + var resolved_1 = loadModuleFromNearestNodeModulesDirectory(extensions, moduleName, containingDirectory, state, cache, redirectedReference); + if (!resolved_1) + return undefined; + var resolvedValue = resolved_1.value; + if (!compilerOptions.preserveSymlinks && resolvedValue && !resolvedValue.originalPath) { + var path = realPath(resolvedValue.path, host, traceEnabled); + var originalPath = path === resolvedValue.path ? undefined : resolvedValue.path; + resolvedValue = __assign(__assign({}, resolvedValue), { path: path, originalPath: originalPath }); + } + // For node_modules lookups, get the real path so that multiple accesses to an `npm link`-ed module do not create duplicate files. + return { value: resolvedValue && { resolved: resolvedValue, isExternalLibraryImport: true } }; + } + else { + var _a = ts.normalizePathAndParts(ts.combinePaths(containingDirectory, moduleName)), candidate = _a.path, parts = _a.parts; + var resolved_2 = nodeLoadModuleByRelativeName(extensions, candidate, /*onlyRecordFailures*/ false, state, /*considerPackageJson*/ true); + // Treat explicit "node_modules" import as an external library import. + return resolved_2 && toSearchResult({ resolved: resolved_2, isExternalLibraryImport: ts.contains(parts, "node_modules") }); + } + } + } + function realPath(path, host, traceEnabled) { + if (!host.realpath) { + return path; + } + var real = ts.normalizePath(host.realpath(path)); + if (traceEnabled) { + trace(host, ts.Diagnostics.Resolving_real_path_for_0_result_1, path, real); + } + ts.Debug.assert(host.fileExists(real), path + " linked to nonexistent file " + real); + return real; + } + function nodeLoadModuleByRelativeName(extensions, candidate, onlyRecordFailures, state, considerPackageJson) { + if (state.traceEnabled) { + trace(state.host, ts.Diagnostics.Loading_module_as_file_Slash_folder_candidate_module_location_0_target_file_type_1, candidate, Extensions[extensions]); + } + if (!ts.hasTrailingDirectorySeparator(candidate)) { + if (!onlyRecordFailures) { + var parentOfCandidate = ts.getDirectoryPath(candidate); + if (!ts.directoryProbablyExists(parentOfCandidate, state.host)) { + if (state.traceEnabled) { + trace(state.host, ts.Diagnostics.Directory_0_does_not_exist_skipping_all_lookups_in_it, parentOfCandidate); + } + onlyRecordFailures = true; + } + } + var resolvedFromFile = loadModuleFromFile(extensions, candidate, onlyRecordFailures, state); + if (resolvedFromFile) { + var packageDirectory = considerPackageJson ? parseNodeModuleFromPath(resolvedFromFile) : undefined; + var packageInfo = packageDirectory ? getPackageJsonInfo(packageDirectory, /*onlyRecordFailures*/ false, state) : undefined; + return withPackageId(packageInfo, resolvedFromFile); + } + } + if (!onlyRecordFailures) { + var candidateExists = ts.directoryProbablyExists(candidate, state.host); + if (!candidateExists) { + if (state.traceEnabled) { + trace(state.host, ts.Diagnostics.Directory_0_does_not_exist_skipping_all_lookups_in_it, candidate); + } + onlyRecordFailures = true; + } + } + return loadNodeModuleFromDirectory(extensions, candidate, onlyRecordFailures, state, considerPackageJson); + } + /*@internal*/ + ts.nodeModulesPathPart = "/node_modules/"; + /*@internal*/ + function pathContainsNodeModules(path) { + return ts.stringContains(path, ts.nodeModulesPathPart); + } + ts.pathContainsNodeModules = pathContainsNodeModules; + /** + * This will be called on the successfully resolved path from `loadModuleFromFile`. + * (Not neeeded for `loadModuleFromNodeModules` as that looks up the `package.json` as part of resolution.) + * + * packageDirectory is the directory of the package itself. + * For `blah/node_modules/foo/index.d.ts` this is packageDirectory: "foo" + * For `/node_modules/foo/bar.d.ts` this is packageDirectory: "foo" + * For `/node_modules/@types/foo/bar/index.d.ts` this is packageDirectory: "@types/foo" + * For `/node_modules/foo/bar/index.d.ts` this is packageDirectory: "foo" + */ + function parseNodeModuleFromPath(resolved) { + var path = ts.normalizePath(resolved.path); + var idx = path.lastIndexOf(ts.nodeModulesPathPart); + if (idx === -1) { + return undefined; + } + var indexAfterNodeModules = idx + ts.nodeModulesPathPart.length; + var indexAfterPackageName = moveToNextDirectorySeparatorIfAvailable(path, indexAfterNodeModules); + if (path.charCodeAt(indexAfterNodeModules) === 64 /* at */) { + indexAfterPackageName = moveToNextDirectorySeparatorIfAvailable(path, indexAfterPackageName); + } + return path.slice(0, indexAfterPackageName); + } + function moveToNextDirectorySeparatorIfAvailable(path, prevSeparatorIndex) { + var nextSeparatorIndex = path.indexOf(ts.directorySeparator, prevSeparatorIndex + 1); + return nextSeparatorIndex === -1 ? prevSeparatorIndex : nextSeparatorIndex; + } + function loadModuleFromFileNoPackageId(extensions, candidate, onlyRecordFailures, state) { + return noPackageId(loadModuleFromFile(extensions, candidate, onlyRecordFailures, state)); + } + /** + * @param {boolean} onlyRecordFailures - if true then function won't try to actually load files but instead record all attempts as failures. This flag is necessary + * in cases when we know upfront that all load attempts will fail (because containing folder does not exists) however we still need to record all failed lookup locations. + */ + function loadModuleFromFile(extensions, candidate, onlyRecordFailures, state) { + if (extensions === Extensions.Json || extensions === Extensions.TSConfig) { + var extensionLess = ts.tryRemoveExtension(candidate, ".json" /* Json */); + return (extensionLess === undefined && extensions === Extensions.Json) ? undefined : tryAddingExtensions(extensionLess || candidate, extensions, onlyRecordFailures, state); + } + // First, try adding an extension. An import of "foo" could be matched by a file "foo.ts", or "foo.js" by "foo.js.ts" + var resolvedByAddingExtension = tryAddingExtensions(candidate, extensions, onlyRecordFailures, state); + if (resolvedByAddingExtension) { + return resolvedByAddingExtension; + } + // If that didn't work, try stripping a ".js" or ".jsx" extension and replacing it with a TypeScript one; + // e.g. "./foo.js" can be matched by "./foo.ts" or "./foo.d.ts" + if (ts.hasJSFileExtension(candidate)) { + var extensionless = ts.removeFileExtension(candidate); + if (state.traceEnabled) { + var extension = candidate.substring(extensionless.length); + trace(state.host, ts.Diagnostics.File_name_0_has_a_1_extension_stripping_it, candidate, extension); + } + return tryAddingExtensions(extensionless, extensions, onlyRecordFailures, state); + } + } + /** Try to return an existing file that adds one of the `extensions` to `candidate`. */ + function tryAddingExtensions(candidate, extensions, onlyRecordFailures, state) { + if (!onlyRecordFailures) { + // check if containing folder exists - if it doesn't then just record failures for all supported extensions without disk probing + var directory = ts.getDirectoryPath(candidate); + if (directory) { + onlyRecordFailures = !ts.directoryProbablyExists(directory, state.host); + } + } + switch (extensions) { + case Extensions.DtsOnly: + return tryExtension(".d.ts" /* Dts */); + case Extensions.TypeScript: + return tryExtension(".ts" /* Ts */) || tryExtension(".tsx" /* Tsx */) || tryExtension(".d.ts" /* Dts */); + case Extensions.JavaScript: + return tryExtension(".js" /* Js */) || tryExtension(".jsx" /* Jsx */); + case Extensions.TSConfig: + case Extensions.Json: + return tryExtension(".json" /* Json */); + } + function tryExtension(ext) { + var path = tryFile(candidate + ext, onlyRecordFailures, state); + return path === undefined ? undefined : { path: path, ext: ext }; + } + } + /** Return the file if it exists. */ + function tryFile(fileName, onlyRecordFailures, state) { + if (!onlyRecordFailures) { + if (state.host.fileExists(fileName)) { + if (state.traceEnabled) { + trace(state.host, ts.Diagnostics.File_0_exist_use_it_as_a_name_resolution_result, fileName); + } + return fileName; + } + else { + if (state.traceEnabled) { + trace(state.host, ts.Diagnostics.File_0_does_not_exist, fileName); + } + } + } + state.failedLookupLocations.push(fileName); + return undefined; + } + function loadNodeModuleFromDirectory(extensions, candidate, onlyRecordFailures, state, considerPackageJson) { + if (considerPackageJson === void 0) { considerPackageJson = true; } + var packageInfo = considerPackageJson ? getPackageJsonInfo(candidate, onlyRecordFailures, state) : undefined; + var packageJsonContent = packageInfo && packageInfo.packageJsonContent; + var versionPaths = packageInfo && packageInfo.versionPaths; + return withPackageId(packageInfo, loadNodeModuleFromDirectoryWorker(extensions, candidate, onlyRecordFailures, state, packageJsonContent, versionPaths)); + } + function getPackageJsonInfo(packageDirectory, onlyRecordFailures, state) { + var host = state.host, traceEnabled = state.traceEnabled; + var directoryExists = !onlyRecordFailures && ts.directoryProbablyExists(packageDirectory, host); + var packageJsonPath = ts.combinePaths(packageDirectory, "package.json"); + if (directoryExists && host.fileExists(packageJsonPath)) { + var packageJsonContent = ts.readJson(packageJsonPath, host); + if (traceEnabled) { + trace(host, ts.Diagnostics.Found_package_json_at_0, packageJsonPath); + } + var versionPaths = readPackageJsonTypesVersionPaths(packageJsonContent, state); + return { packageDirectory: packageDirectory, packageJsonContent: packageJsonContent, versionPaths: versionPaths }; + } + else { + if (directoryExists && traceEnabled) { + trace(host, ts.Diagnostics.File_0_does_not_exist, packageJsonPath); + } + // record package json as one of failed lookup locations - in the future if this file will appear it will invalidate resolution results + state.failedLookupLocations.push(packageJsonPath); + } + } + function loadNodeModuleFromDirectoryWorker(extensions, candidate, onlyRecordFailures, state, jsonContent, versionPaths) { + var packageFile; + if (jsonContent) { + switch (extensions) { + case Extensions.JavaScript: + case Extensions.Json: + packageFile = readPackageJsonMainField(jsonContent, candidate, state); + break; + case Extensions.TypeScript: + // When resolving typescript modules, try resolving using main field as well + packageFile = readPackageJsonTypesFields(jsonContent, candidate, state) || readPackageJsonMainField(jsonContent, candidate, state); + break; + case Extensions.DtsOnly: + packageFile = readPackageJsonTypesFields(jsonContent, candidate, state); + break; + case Extensions.TSConfig: + packageFile = readPackageJsonTSConfigField(jsonContent, candidate, state); + break; + default: + return ts.Debug.assertNever(extensions); + } + } + var loader = function (extensions, candidate, onlyRecordFailures, state) { + var fromFile = tryFile(candidate, onlyRecordFailures, state); + if (fromFile) { + var resolved = resolvedIfExtensionMatches(extensions, fromFile); + if (resolved) { + return noPackageId(resolved); + } + if (state.traceEnabled) { + trace(state.host, ts.Diagnostics.File_0_has_an_unsupported_extension_so_skipping_it, fromFile); + } + } + // Even if extensions is DtsOnly, we can still look up a .ts file as a result of package.json "types" + var nextExtensions = extensions === Extensions.DtsOnly ? Extensions.TypeScript : extensions; + // Don't do package.json lookup recursively, because Node.js' package lookup doesn't. + return nodeLoadModuleByRelativeName(nextExtensions, candidate, onlyRecordFailures, state, /*considerPackageJson*/ false); + }; + var onlyRecordFailuresForPackageFile = packageFile ? !ts.directoryProbablyExists(ts.getDirectoryPath(packageFile), state.host) : undefined; + var onlyRecordFailuresForIndex = onlyRecordFailures || !ts.directoryProbablyExists(candidate, state.host); + var indexPath = ts.combinePaths(candidate, extensions === Extensions.TSConfig ? "tsconfig" : "index"); + if (versionPaths && (!packageFile || ts.containsPath(candidate, packageFile))) { + var moduleName = ts.getRelativePathFromDirectory(candidate, packageFile || indexPath, /*ignoreCase*/ false); + if (state.traceEnabled) { + trace(state.host, ts.Diagnostics.package_json_has_a_typesVersions_entry_0_that_matches_compiler_version_1_looking_for_a_pattern_to_match_module_name_2, versionPaths.version, ts.version, moduleName); + } + var result = tryLoadModuleUsingPaths(extensions, moduleName, candidate, versionPaths.paths, loader, onlyRecordFailuresForPackageFile || onlyRecordFailuresForIndex, state); + if (result) { + return removeIgnoredPackageId(result.value); + } + } + // It won't have a `packageId` set, because we disabled `considerPackageJson`. + var packageFileResult = packageFile && removeIgnoredPackageId(loader(extensions, packageFile, onlyRecordFailuresForPackageFile, state)); + if (packageFileResult) + return packageFileResult; + return loadModuleFromFile(extensions, indexPath, onlyRecordFailuresForIndex, state); + } + /** Resolve from an arbitrarily specified file. Return `undefined` if it has an unsupported extension. */ + function resolvedIfExtensionMatches(extensions, path) { + var ext = ts.tryGetExtensionFromPath(path); + return ext !== undefined && extensionIsOk(extensions, ext) ? { path: path, ext: ext } : undefined; + } + /** True if `extension` is one of the supported `extensions`. */ + function extensionIsOk(extensions, extension) { + switch (extensions) { + case Extensions.JavaScript: + return extension === ".js" /* Js */ || extension === ".jsx" /* Jsx */; + case Extensions.TSConfig: + case Extensions.Json: + return extension === ".json" /* Json */; + case Extensions.TypeScript: + return extension === ".ts" /* Ts */ || extension === ".tsx" /* Tsx */ || extension === ".d.ts" /* Dts */; + case Extensions.DtsOnly: + return extension === ".d.ts" /* Dts */; + } + } + /* @internal */ + function parsePackageName(moduleName) { + var idx = moduleName.indexOf(ts.directorySeparator); + if (moduleName[0] === "@") { + idx = moduleName.indexOf(ts.directorySeparator, idx + 1); + } + return idx === -1 ? { packageName: moduleName, rest: "" } : { packageName: moduleName.slice(0, idx), rest: moduleName.slice(idx + 1) }; + } + ts.parsePackageName = parsePackageName; + function loadModuleFromNearestNodeModulesDirectory(extensions, moduleName, directory, state, cache, redirectedReference) { + return loadModuleFromNearestNodeModulesDirectoryWorker(extensions, moduleName, directory, state, /*typesScopeOnly*/ false, cache, redirectedReference); + } + function loadModuleFromNearestNodeModulesDirectoryTypesScope(moduleName, directory, state) { + // Extensions parameter here doesn't actually matter, because typesOnly ensures we're just doing @types lookup, which is always DtsOnly. + return loadModuleFromNearestNodeModulesDirectoryWorker(Extensions.DtsOnly, moduleName, directory, state, /*typesScopeOnly*/ true, /*cache*/ undefined, /*redirectedReference*/ undefined); + } + function loadModuleFromNearestNodeModulesDirectoryWorker(extensions, moduleName, directory, state, typesScopeOnly, cache, redirectedReference) { + var perModuleNameCache = cache && cache.getOrCreateCacheForModuleName(moduleName, redirectedReference); + return ts.forEachAncestorDirectory(ts.normalizeSlashes(directory), function (ancestorDirectory) { + if (ts.getBaseFileName(ancestorDirectory) !== "node_modules") { + var resolutionFromCache = tryFindNonRelativeModuleNameInCache(perModuleNameCache, moduleName, ancestorDirectory, state); + if (resolutionFromCache) { + return resolutionFromCache; + } + return toSearchResult(loadModuleFromImmediateNodeModulesDirectory(extensions, moduleName, ancestorDirectory, state, typesScopeOnly)); + } + }); + } + function loadModuleFromImmediateNodeModulesDirectory(extensions, moduleName, directory, state, typesScopeOnly) { + var nodeModulesFolder = ts.combinePaths(directory, "node_modules"); + var nodeModulesFolderExists = ts.directoryProbablyExists(nodeModulesFolder, state.host); + if (!nodeModulesFolderExists && state.traceEnabled) { + trace(state.host, ts.Diagnostics.Directory_0_does_not_exist_skipping_all_lookups_in_it, nodeModulesFolder); + } + var packageResult = typesScopeOnly ? undefined : loadModuleFromSpecificNodeModulesDirectory(extensions, moduleName, nodeModulesFolder, nodeModulesFolderExists, state); + if (packageResult) { + return packageResult; + } + if (extensions === Extensions.TypeScript || extensions === Extensions.DtsOnly) { + var nodeModulesAtTypes_1 = ts.combinePaths(nodeModulesFolder, "@types"); + var nodeModulesAtTypesExists = nodeModulesFolderExists; + if (nodeModulesFolderExists && !ts.directoryProbablyExists(nodeModulesAtTypes_1, state.host)) { + if (state.traceEnabled) { + trace(state.host, ts.Diagnostics.Directory_0_does_not_exist_skipping_all_lookups_in_it, nodeModulesAtTypes_1); + } + nodeModulesAtTypesExists = false; + } + return loadModuleFromSpecificNodeModulesDirectory(Extensions.DtsOnly, mangleScopedPackageNameWithTrace(moduleName, state), nodeModulesAtTypes_1, nodeModulesAtTypesExists, state); + } + } + function loadModuleFromSpecificNodeModulesDirectory(extensions, moduleName, nodeModulesDirectory, nodeModulesDirectoryExists, state) { + var candidate = ts.normalizePath(ts.combinePaths(nodeModulesDirectory, moduleName)); + // First look for a nested package.json, as in `node_modules/foo/bar/package.json`. + var packageInfo = getPackageJsonInfo(candidate, !nodeModulesDirectoryExists, state); + if (packageInfo) { + var fromFile = loadModuleFromFile(extensions, candidate, !nodeModulesDirectoryExists, state); + if (fromFile) { + return noPackageId(fromFile); + } + var fromDirectory = loadNodeModuleFromDirectoryWorker(extensions, candidate, !nodeModulesDirectoryExists, state, packageInfo.packageJsonContent, packageInfo.versionPaths); + return withPackageId(packageInfo, fromDirectory); + } + var loader = function (extensions, candidate, onlyRecordFailures, state) { + var pathAndExtension = loadModuleFromFile(extensions, candidate, onlyRecordFailures, state) || + loadNodeModuleFromDirectoryWorker(extensions, candidate, onlyRecordFailures, state, packageInfo && packageInfo.packageJsonContent, packageInfo && packageInfo.versionPaths); + return withPackageId(packageInfo, pathAndExtension); + }; + var _a = parsePackageName(moduleName), packageName = _a.packageName, rest = _a.rest; + if (rest !== "") { // If "rest" is empty, we just did this search above. + var packageDirectory = ts.combinePaths(nodeModulesDirectory, packageName); + // Don't use a "types" or "main" from here because we're not loading the root, but a subdirectory -- just here for the packageId and path mappings. + packageInfo = getPackageJsonInfo(packageDirectory, !nodeModulesDirectoryExists, state); + if (packageInfo && packageInfo.versionPaths) { + if (state.traceEnabled) { + trace(state.host, ts.Diagnostics.package_json_has_a_typesVersions_entry_0_that_matches_compiler_version_1_looking_for_a_pattern_to_match_module_name_2, packageInfo.versionPaths.version, ts.version, rest); + } + var packageDirectoryExists = nodeModulesDirectoryExists && ts.directoryProbablyExists(packageDirectory, state.host); + var fromPaths = tryLoadModuleUsingPaths(extensions, rest, packageDirectory, packageInfo.versionPaths.paths, loader, !packageDirectoryExists, state); + if (fromPaths) { + return fromPaths.value; + } + } + } + return loader(extensions, candidate, !nodeModulesDirectoryExists, state); + } + function tryLoadModuleUsingPaths(extensions, moduleName, baseDirectory, paths, loader, onlyRecordFailures, state) { + var matchedPattern = ts.matchPatternOrExact(ts.getOwnKeys(paths), moduleName); + if (matchedPattern) { + var matchedStar_1 = ts.isString(matchedPattern) ? undefined : ts.matchedText(matchedPattern, moduleName); + var matchedPatternText = ts.isString(matchedPattern) ? matchedPattern : ts.patternText(matchedPattern); + if (state.traceEnabled) { + trace(state.host, ts.Diagnostics.Module_name_0_matched_pattern_1, moduleName, matchedPatternText); + } + var resolved = ts.forEach(paths[matchedPatternText], function (subst) { + var path = matchedStar_1 ? subst.replace("*", matchedStar_1) : subst; + var candidate = ts.normalizePath(ts.combinePaths(baseDirectory, path)); + if (state.traceEnabled) { + trace(state.host, ts.Diagnostics.Trying_substitution_0_candidate_module_location_Colon_1, subst, path); + } + // A path mapping may have an extension, in contrast to an import, which should omit it. + var extension = ts.tryGetExtensionFromPath(candidate); + if (extension !== undefined) { + var path_1 = tryFile(candidate, onlyRecordFailures, state); + if (path_1 !== undefined) { + return noPackageId({ path: path_1, ext: extension }); + } + } + return loader(extensions, candidate, onlyRecordFailures || !ts.directoryProbablyExists(ts.getDirectoryPath(candidate), state.host), state); + }); + return { value: resolved }; + } + } + /** Double underscores are used in DefinitelyTyped to delimit scoped packages. */ + var mangledScopedPackageSeparator = "__"; + /** For a scoped package, we must look in `@types/foo__bar` instead of `@types/@foo/bar`. */ + function mangleScopedPackageNameWithTrace(packageName, state) { + var mangled = mangleScopedPackageName(packageName); + if (state.traceEnabled && mangled !== packageName) { + trace(state.host, ts.Diagnostics.Scoped_package_detected_looking_in_0, mangled); + } + return mangled; + } + /* @internal */ + function getTypesPackageName(packageName) { + return "@types/" + mangleScopedPackageName(packageName); + } + ts.getTypesPackageName = getTypesPackageName; + /* @internal */ + function mangleScopedPackageName(packageName) { + if (ts.startsWith(packageName, "@")) { + var replaceSlash = packageName.replace(ts.directorySeparator, mangledScopedPackageSeparator); + if (replaceSlash !== packageName) { + return replaceSlash.slice(1); // Take off the "@" + } + } + return packageName; + } + ts.mangleScopedPackageName = mangleScopedPackageName; + /* @internal */ + function getPackageNameFromTypesPackageName(mangledName) { + var withoutAtTypePrefix = ts.removePrefix(mangledName, "@types/"); + if (withoutAtTypePrefix !== mangledName) { + return unmangleScopedPackageName(withoutAtTypePrefix); + } + return mangledName; + } + ts.getPackageNameFromTypesPackageName = getPackageNameFromTypesPackageName; + /* @internal */ + function unmangleScopedPackageName(typesPackageName) { + return ts.stringContains(typesPackageName, mangledScopedPackageSeparator) ? + "@" + typesPackageName.replace(mangledScopedPackageSeparator, ts.directorySeparator) : + typesPackageName; + } + ts.unmangleScopedPackageName = unmangleScopedPackageName; + function tryFindNonRelativeModuleNameInCache(cache, moduleName, containingDirectory, state) { + var result = cache && cache.get(containingDirectory); + if (result) { + if (state.traceEnabled) { + trace(state.host, ts.Diagnostics.Resolution_for_module_0_was_found_in_cache_from_location_1, moduleName, containingDirectory); + } + state.resultFromCache = result; + return { value: result.resolvedModule && { path: result.resolvedModule.resolvedFileName, originalPath: result.resolvedModule.originalPath || true, extension: result.resolvedModule.extension, packageId: result.resolvedModule.packageId } }; + } + } + function classicNameResolver(moduleName, containingFile, compilerOptions, host, cache, redirectedReference) { + var traceEnabled = isTraceEnabled(compilerOptions, host); + var failedLookupLocations = []; + var state = { compilerOptions: compilerOptions, host: host, traceEnabled: traceEnabled, failedLookupLocations: failedLookupLocations }; + var containingDirectory = ts.getDirectoryPath(containingFile); + var resolved = tryResolve(Extensions.TypeScript) || tryResolve(Extensions.JavaScript); + // No originalPath because classic resolution doesn't resolve realPath + return createResolvedModuleWithFailedLookupLocations(resolved && resolved.value, /*isExternalLibraryImport*/ false, failedLookupLocations, state.resultFromCache); + function tryResolve(extensions) { + var resolvedUsingSettings = tryLoadModuleUsingOptionalResolutionSettings(extensions, moduleName, containingDirectory, loadModuleFromFileNoPackageId, state); + if (resolvedUsingSettings) { + return { value: resolvedUsingSettings }; + } + if (!ts.isExternalModuleNameRelative(moduleName)) { + var perModuleNameCache_1 = cache && cache.getOrCreateCacheForModuleName(moduleName, redirectedReference); + // Climb up parent directories looking for a module. + var resolved_3 = ts.forEachAncestorDirectory(containingDirectory, function (directory) { + var resolutionFromCache = tryFindNonRelativeModuleNameInCache(perModuleNameCache_1, moduleName, directory, state); + if (resolutionFromCache) { + return resolutionFromCache; + } + var searchName = ts.normalizePath(ts.combinePaths(directory, moduleName)); + return toSearchResult(loadModuleFromFileNoPackageId(extensions, searchName, /*onlyRecordFailures*/ false, state)); + }); + if (resolved_3) { + return resolved_3; + } + if (extensions === Extensions.TypeScript) { + // If we didn't find the file normally, look it up in @types. + return loadModuleFromNearestNodeModulesDirectoryTypesScope(moduleName, containingDirectory, state); + } + } + else { + var candidate = ts.normalizePath(ts.combinePaths(containingDirectory, moduleName)); + return toSearchResult(loadModuleFromFileNoPackageId(extensions, candidate, /*onlyRecordFailures*/ false, state)); + } + } + } + ts.classicNameResolver = classicNameResolver; + /** + * A host may load a module from a global cache of typings. + * This is the minumum code needed to expose that functionality; the rest is in the host. + */ + /* @internal */ + function loadModuleFromGlobalCache(moduleName, projectName, compilerOptions, host, globalCache) { + var traceEnabled = isTraceEnabled(compilerOptions, host); + if (traceEnabled) { + trace(host, ts.Diagnostics.Auto_discovery_for_typings_is_enabled_in_project_0_Running_extra_resolution_pass_for_module_1_using_cache_location_2, projectName, moduleName, globalCache); + } + var failedLookupLocations = []; + var state = { compilerOptions: compilerOptions, host: host, traceEnabled: traceEnabled, failedLookupLocations: failedLookupLocations }; + var resolved = loadModuleFromImmediateNodeModulesDirectory(Extensions.DtsOnly, moduleName, globalCache, state, /*typesScopeOnly*/ false); + return createResolvedModuleWithFailedLookupLocations(resolved, /*isExternalLibraryImport*/ true, failedLookupLocations, state.resultFromCache); + } + ts.loadModuleFromGlobalCache = loadModuleFromGlobalCache; + /** + * Wraps value to SearchResult. + * @returns undefined if value is undefined or { value } otherwise + */ + function toSearchResult(value) { + return value !== undefined ? { value: value } : undefined; + } +})(ts || (ts = {})); +/* @internal */ +var ts; +(function (ts) { + var ModuleInstanceState; + (function (ModuleInstanceState) { + ModuleInstanceState[ModuleInstanceState["NonInstantiated"] = 0] = "NonInstantiated"; + ModuleInstanceState[ModuleInstanceState["Instantiated"] = 1] = "Instantiated"; + ModuleInstanceState[ModuleInstanceState["ConstEnumOnly"] = 2] = "ConstEnumOnly"; + })(ModuleInstanceState = ts.ModuleInstanceState || (ts.ModuleInstanceState = {})); + function getModuleInstanceState(node, visited) { + if (node.body && !node.body.parent) { + // getModuleInstanceStateForAliasTarget needs to walk up the parent chain, so parent pointers must be set on this tree already + setParentPointers(node, node.body); + } + return node.body ? getModuleInstanceStateCached(node.body, visited) : 1 /* Instantiated */; + } + ts.getModuleInstanceState = getModuleInstanceState; + function getModuleInstanceStateCached(node, visited) { + if (visited === void 0) { visited = ts.createMap(); } + var nodeId = "" + ts.getNodeId(node); + if (visited.has(nodeId)) { + return visited.get(nodeId) || 0 /* NonInstantiated */; + } + visited.set(nodeId, undefined); + var result = getModuleInstanceStateWorker(node, visited); + visited.set(nodeId, result); + return result; + } + function getModuleInstanceStateWorker(node, visited) { + // A module is uninstantiated if it contains only + switch (node.kind) { + // 1. interface declarations, type alias declarations + case 246 /* InterfaceDeclaration */: + case 247 /* TypeAliasDeclaration */: + return 0 /* NonInstantiated */; + // 2. const enum declarations + case 248 /* EnumDeclaration */: + if (ts.isEnumConst(node)) { + return 2 /* ConstEnumOnly */; + } + break; + // 3. non-exported import declarations + case 254 /* ImportDeclaration */: + case 253 /* ImportEqualsDeclaration */: + if (!(ts.hasModifier(node, 1 /* Export */))) { + return 0 /* NonInstantiated */; + } + break; + // 4. Export alias declarations pointing at only uninstantiated modules or things uninstantiated modules contain + case 260 /* ExportDeclaration */: + var exportDeclaration = node; + if (!exportDeclaration.moduleSpecifier && exportDeclaration.exportClause && exportDeclaration.exportClause.kind === 261 /* NamedExports */) { + var state = 0 /* NonInstantiated */; + for (var _i = 0, _a = exportDeclaration.exportClause.elements; _i < _a.length; _i++) { + var specifier = _a[_i]; + var specifierState = getModuleInstanceStateForAliasTarget(specifier, visited); + if (specifierState > state) { + state = specifierState; + } + if (state === 1 /* Instantiated */) { + return state; + } + } + return state; + } + break; + // 5. other uninstantiated module declarations. + case 250 /* ModuleBlock */: { + var state_1 = 0 /* NonInstantiated */; + ts.forEachChild(node, function (n) { + var childState = getModuleInstanceStateCached(n, visited); + switch (childState) { + case 0 /* NonInstantiated */: + // child is non-instantiated - continue searching + return; + case 2 /* ConstEnumOnly */: + // child is const enum only - record state and continue searching + state_1 = 2 /* ConstEnumOnly */; + return; + case 1 /* Instantiated */: + // child is instantiated - record state and stop + state_1 = 1 /* Instantiated */; + return true; + default: + ts.Debug.assertNever(childState); + } + }); + return state_1; + } + case 249 /* ModuleDeclaration */: + return getModuleInstanceState(node, visited); + case 75 /* Identifier */: + // Only jsdoc typedef definition can exist in jsdoc namespace, and it should + // be considered the same as type alias + if (node.isInJSDocNamespace) { + return 0 /* NonInstantiated */; + } + } + return 1 /* Instantiated */; + } + function getModuleInstanceStateForAliasTarget(specifier, visited) { + var name = specifier.propertyName || specifier.name; + var p = specifier.parent; + while (p) { + if (ts.isBlock(p) || ts.isModuleBlock(p) || ts.isSourceFile(p)) { + var statements = p.statements; + var found = void 0; + for (var _i = 0, statements_1 = statements; _i < statements_1.length; _i++) { + var statement = statements_1[_i]; + if (ts.nodeHasName(statement, name)) { + if (!statement.parent) { + setParentPointers(p, statement); + } + var state = getModuleInstanceStateCached(statement, visited); + if (found === undefined || state > found) { + found = state; + } + if (found === 1 /* Instantiated */) { + return found; + } + } + } + if (found !== undefined) { + return found; + } + } + p = p.parent; + } + return 1 /* Instantiated */; // Couldn't locate, assume could refer to a value + } + var ContainerFlags; + (function (ContainerFlags) { + // The current node is not a container, and no container manipulation should happen before + // recursing into it. + ContainerFlags[ContainerFlags["None"] = 0] = "None"; + // The current node is a container. It should be set as the current container (and block- + // container) before recursing into it. The current node does not have locals. Examples: + // + // Classes, ObjectLiterals, TypeLiterals, Interfaces... + ContainerFlags[ContainerFlags["IsContainer"] = 1] = "IsContainer"; + // The current node is a block-scoped-container. It should be set as the current block- + // container before recursing into it. Examples: + // + // Blocks (when not parented by functions), Catch clauses, For/For-in/For-of statements... + ContainerFlags[ContainerFlags["IsBlockScopedContainer"] = 2] = "IsBlockScopedContainer"; + // The current node is the container of a control flow path. The current control flow should + // be saved and restored, and a new control flow initialized within the container. + ContainerFlags[ContainerFlags["IsControlFlowContainer"] = 4] = "IsControlFlowContainer"; + ContainerFlags[ContainerFlags["IsFunctionLike"] = 8] = "IsFunctionLike"; + ContainerFlags[ContainerFlags["IsFunctionExpression"] = 16] = "IsFunctionExpression"; + ContainerFlags[ContainerFlags["HasLocals"] = 32] = "HasLocals"; + ContainerFlags[ContainerFlags["IsInterface"] = 64] = "IsInterface"; + ContainerFlags[ContainerFlags["IsObjectLiteralOrClassExpressionMethod"] = 128] = "IsObjectLiteralOrClassExpressionMethod"; + })(ContainerFlags || (ContainerFlags = {})); + function initFlowNode(node) { + ts.Debug.attachFlowNodeDebugInfo(node); + return node; + } + var binder = createBinder(); + function bindSourceFile(file, options) { + ts.performance.mark("beforeBind"); + ts.perfLogger.logStartBindFile("" + file.fileName); + binder(file, options); + ts.perfLogger.logStopBindFile(); + ts.performance.mark("afterBind"); + ts.performance.measure("Bind", "beforeBind", "afterBind"); + } + ts.bindSourceFile = bindSourceFile; + function createBinder() { + var file; + var options; + var languageVersion; + var parent; + var container; + var thisParentContainer; // Container one level up + var blockScopeContainer; + var lastContainer; + var delayedTypeAliases; + var seenThisKeyword; + // state used by control flow analysis + var currentFlow; + var currentBreakTarget; + var currentContinueTarget; + var currentReturnTarget; + var currentTrueTarget; + var currentFalseTarget; + var currentExceptionTarget; + var preSwitchCaseFlow; + var activeLabelList; + var hasExplicitReturn; + // state used for emit helpers + var emitFlags; + // If this file is an external module, then it is automatically in strict-mode according to + // ES6. If it is not an external module, then we'll determine if it is in strict mode or + // not depending on if we see "use strict" in certain places or if we hit a class/namespace + // or if compiler options contain alwaysStrict. + var inStrictMode; + var symbolCount = 0; + var Symbol; + var classifiableNames; + var unreachableFlow = { flags: 1 /* Unreachable */ }; + var reportedUnreachableFlow = { flags: 1 /* Unreachable */ }; + // state used to aggregate transform flags during bind. + var subtreeTransformFlags = 0 /* None */; + var skipTransformFlagAggregation; + /** + * Inside the binder, we may create a diagnostic for an as-yet unbound node (with potentially no parent pointers, implying no accessible source file) + * If so, the node _must_ be in the current file (as that's the only way anything could have traversed to it to yield it as the error node) + * This version of `createDiagnosticForNode` uses the binder's context to account for this, and always yields correct diagnostics even in these situations. + */ + function createDiagnosticForNode(node, message, arg0, arg1, arg2) { + return ts.createDiagnosticForNodeInSourceFile(ts.getSourceFileOfNode(node) || file, node, message, arg0, arg1, arg2); + } + function bindSourceFile(f, opts) { + file = f; + options = opts; + languageVersion = ts.getEmitScriptTarget(options); + inStrictMode = bindInStrictMode(file, opts); + classifiableNames = ts.createUnderscoreEscapedMap(); + symbolCount = 0; + skipTransformFlagAggregation = file.isDeclarationFile; + Symbol = ts.objectAllocator.getSymbolConstructor(); + // Attach debugging information if necessary + ts.Debug.attachFlowNodeDebugInfo(unreachableFlow); + ts.Debug.attachFlowNodeDebugInfo(reportedUnreachableFlow); + if (!file.locals) { + bind(file); + file.symbolCount = symbolCount; + file.classifiableNames = classifiableNames; + delayedBindJSDocTypedefTag(); + } + file = undefined; + options = undefined; + languageVersion = undefined; + parent = undefined; + container = undefined; + thisParentContainer = undefined; + blockScopeContainer = undefined; + lastContainer = undefined; + delayedTypeAliases = undefined; + seenThisKeyword = false; + currentFlow = undefined; + currentBreakTarget = undefined; + currentContinueTarget = undefined; + currentReturnTarget = undefined; + currentTrueTarget = undefined; + currentFalseTarget = undefined; + currentExceptionTarget = undefined; + activeLabelList = undefined; + hasExplicitReturn = false; + emitFlags = 0 /* None */; + subtreeTransformFlags = 0 /* None */; + } + return bindSourceFile; + function bindInStrictMode(file, opts) { + if (ts.getStrictOptionValue(opts, "alwaysStrict") && !file.isDeclarationFile) { + // bind in strict mode source files with alwaysStrict option + return true; + } + else { + return !!file.externalModuleIndicator; + } + } + function createSymbol(flags, name) { + symbolCount++; + return new Symbol(flags, name); + } + function addDeclarationToSymbol(symbol, node, symbolFlags) { + symbol.flags |= symbolFlags; + node.symbol = symbol; + symbol.declarations = ts.appendIfUnique(symbol.declarations, node); + if (symbolFlags & (32 /* Class */ | 384 /* Enum */ | 1536 /* Module */ | 3 /* Variable */) && !symbol.exports) { + symbol.exports = ts.createSymbolTable(); + } + if (symbolFlags & (32 /* Class */ | 64 /* Interface */ | 2048 /* TypeLiteral */ | 4096 /* ObjectLiteral */) && !symbol.members) { + symbol.members = ts.createSymbolTable(); + } + // On merge of const enum module with class or function, reset const enum only flag (namespaces will already recalculate) + if (symbol.constEnumOnlyModule && (symbol.flags & (16 /* Function */ | 32 /* Class */ | 256 /* RegularEnum */))) { + symbol.constEnumOnlyModule = false; + } + if (symbolFlags & 111551 /* Value */) { + ts.setValueDeclaration(symbol, node); + } + } + // Should not be called on a declaration with a computed property name, + // unless it is a well known Symbol. + function getDeclarationName(node) { + if (node.kind === 259 /* ExportAssignment */) { + return node.isExportEquals ? "export=" /* ExportEquals */ : "default" /* Default */; + } + var name = ts.getNameOfDeclaration(node); + if (name) { + if (ts.isAmbientModule(node)) { + var moduleName = ts.getTextOfIdentifierOrLiteral(name); + return (ts.isGlobalScopeAugmentation(node) ? "__global" : "\"" + moduleName + "\""); + } + if (name.kind === 154 /* ComputedPropertyName */) { + var nameExpression = name.expression; + // treat computed property names where expression is string/numeric literal as just string/numeric literal + if (ts.isStringOrNumericLiteralLike(nameExpression)) { + return ts.escapeLeadingUnderscores(nameExpression.text); + } + if (ts.isSignedNumericLiteral(nameExpression)) { + return ts.tokenToString(nameExpression.operator) + nameExpression.operand.text; + } + ts.Debug.assert(ts.isWellKnownSymbolSyntactically(nameExpression)); + return ts.getPropertyNameForKnownSymbolName(ts.idText(nameExpression.name)); + } + if (ts.isWellKnownSymbolSyntactically(name)) { + return ts.getPropertyNameForKnownSymbolName(ts.idText(name.name)); + } + if (ts.isPrivateIdentifier(name)) { + // containingClass exists because private names only allowed inside classes + var containingClass = ts.getContainingClass(node); + if (!containingClass) { + // we can get here in cases where there is already a parse error. + return undefined; + } + var containingClassSymbol = containingClass.symbol; + return ts.getSymbolNameForPrivateIdentifier(containingClassSymbol, name.escapedText); + } + return ts.isPropertyNameLiteral(name) ? ts.getEscapedTextOfIdentifierOrLiteral(name) : undefined; + } + switch (node.kind) { + case 162 /* Constructor */: + return "__constructor" /* Constructor */; + case 170 /* FunctionType */: + case 165 /* CallSignature */: + case 305 /* JSDocSignature */: + return "__call" /* Call */; + case 171 /* ConstructorType */: + case 166 /* ConstructSignature */: + return "__new" /* New */; + case 167 /* IndexSignature */: + return "__index" /* Index */; + case 260 /* ExportDeclaration */: + return "__export" /* ExportStar */; + case 290 /* SourceFile */: + // json file should behave as + // module.exports = ... + return "export=" /* ExportEquals */; + case 209 /* BinaryExpression */: + if (ts.getAssignmentDeclarationKind(node) === 2 /* ModuleExports */) { + // module.exports = ... + return "export=" /* ExportEquals */; + } + ts.Debug.fail("Unknown binary declaration kind"); + break; + case 300 /* JSDocFunctionType */: + return (ts.isJSDocConstructSignature(node) ? "__new" /* New */ : "__call" /* Call */); + case 156 /* Parameter */: + // Parameters with names are handled at the top of this function. Parameters + // without names can only come from JSDocFunctionTypes. + ts.Debug.assert(node.parent.kind === 300 /* JSDocFunctionType */, "Impossible parameter parent kind", function () { return "parent is: " + (ts.SyntaxKind ? ts.SyntaxKind[node.parent.kind] : node.parent.kind) + ", expected JSDocFunctionType"; }); + var functionType = node.parent; + var index = functionType.parameters.indexOf(node); + return "arg" + index; + } + } + function getDisplayName(node) { + return ts.isNamedDeclaration(node) ? ts.declarationNameToString(node.name) : ts.unescapeLeadingUnderscores(ts.Debug.checkDefined(getDeclarationName(node))); + } + /** + * Declares a Symbol for the node and adds it to symbols. Reports errors for conflicting identifier names. + * @param symbolTable - The symbol table which node will be added to. + * @param parent - node's parent declaration. + * @param node - The declaration to be added to the symbol table + * @param includes - The SymbolFlags that node has in addition to its declaration type (eg: export, ambient, etc.) + * @param excludes - The flags which node cannot be declared alongside in a symbol table. Used to report forbidden declarations. + */ + function declareSymbol(symbolTable, parent, node, includes, excludes, isReplaceableByMethod) { + ts.Debug.assert(!ts.hasDynamicName(node)); + var isDefaultExport = ts.hasModifier(node, 512 /* Default */) || ts.isExportSpecifier(node) && node.name.escapedText === "default"; + // The exported symbol for an export default function/class node is always named "default" + var name = isDefaultExport && parent ? "default" /* Default */ : getDeclarationName(node); + var symbol; + if (name === undefined) { + symbol = createSymbol(0 /* None */, "__missing" /* Missing */); + } + else { + // Check and see if the symbol table already has a symbol with this name. If not, + // create a new symbol with this name and add it to the table. Note that we don't + // give the new symbol any flags *yet*. This ensures that it will not conflict + // with the 'excludes' flags we pass in. + // + // If we do get an existing symbol, see if it conflicts with the new symbol we're + // creating. For example, a 'var' symbol and a 'class' symbol will conflict within + // the same symbol table. If we have a conflict, report the issue on each + // declaration we have for this symbol, and then create a new symbol for this + // declaration. + // + // Note that when properties declared in Javascript constructors + // (marked by isReplaceableByMethod) conflict with another symbol, the property loses. + // Always. This allows the common Javascript pattern of overwriting a prototype method + // with an bound instance method of the same type: `this.method = this.method.bind(this)` + // + // If we created a new symbol, either because we didn't have a symbol with this name + // in the symbol table, or we conflicted with an existing symbol, then just add this + // node as the sole declaration of the new symbol. + // + // Otherwise, we'll be merging into a compatible existing symbol (for example when + // you have multiple 'vars' with the same name in the same container). In this case + // just add this node into the declarations list of the symbol. + symbol = symbolTable.get(name); + if (includes & 2885600 /* Classifiable */) { + classifiableNames.set(name, true); + } + if (!symbol) { + symbolTable.set(name, symbol = createSymbol(0 /* None */, name)); + if (isReplaceableByMethod) + symbol.isReplaceableByMethod = true; + } + else if (isReplaceableByMethod && !symbol.isReplaceableByMethod) { + // A symbol already exists, so don't add this as a declaration. + return symbol; + } + else if (symbol.flags & excludes) { + if (symbol.isReplaceableByMethod) { + // Javascript constructor-declared symbols can be discarded in favor of + // prototype symbols like methods. + symbolTable.set(name, symbol = createSymbol(0 /* None */, name)); + } + else if (!(includes & 3 /* Variable */ && symbol.flags & 67108864 /* Assignment */)) { + // Assignment declarations are allowed to merge with variables, no matter what other flags they have. + if (ts.isNamedDeclaration(node)) { + node.name.parent = node; + } + // Report errors every position with duplicate declaration + // Report errors on previous encountered declarations + var message_1 = symbol.flags & 2 /* BlockScopedVariable */ + ? ts.Diagnostics.Cannot_redeclare_block_scoped_variable_0 + : ts.Diagnostics.Duplicate_identifier_0; + var messageNeedsName_1 = true; + if (symbol.flags & 384 /* Enum */ || includes & 384 /* Enum */) { + message_1 = ts.Diagnostics.Enum_declarations_can_only_merge_with_namespace_or_other_enum_declarations; + messageNeedsName_1 = false; + } + var multipleDefaultExports_1 = false; + if (ts.length(symbol.declarations)) { + // If the current node is a default export of some sort, then check if + // there are any other default exports that we need to error on. + // We'll know whether we have other default exports depending on if `symbol` already has a declaration list set. + if (isDefaultExport) { + message_1 = ts.Diagnostics.A_module_cannot_have_multiple_default_exports; + messageNeedsName_1 = false; + multipleDefaultExports_1 = true; + } + else { + // This is to properly report an error in the case "export default { }" is after export default of class declaration or function declaration. + // Error on multiple export default in the following case: + // 1. multiple export default of class declaration or function declaration by checking NodeFlags.Default + // 2. multiple export default of export assignment. This one doesn't have NodeFlags.Default on (as export default doesn't considered as modifiers) + if (symbol.declarations && symbol.declarations.length && + (node.kind === 259 /* ExportAssignment */ && !node.isExportEquals)) { + message_1 = ts.Diagnostics.A_module_cannot_have_multiple_default_exports; + messageNeedsName_1 = false; + multipleDefaultExports_1 = true; + } + } + } + var relatedInformation_1 = []; + if (ts.isTypeAliasDeclaration(node) && ts.nodeIsMissing(node.type) && ts.hasModifier(node, 1 /* Export */) && symbol.flags & (2097152 /* Alias */ | 788968 /* Type */ | 1920 /* Namespace */)) { + // export type T; - may have meant export type { T }? + relatedInformation_1.push(createDiagnosticForNode(node, ts.Diagnostics.Did_you_mean_0, "export type { " + ts.unescapeLeadingUnderscores(node.name.escapedText) + " }")); + } + var declarationName_1 = ts.getNameOfDeclaration(node) || node; + ts.forEach(symbol.declarations, function (declaration, index) { + var decl = ts.getNameOfDeclaration(declaration) || declaration; + var diag = createDiagnosticForNode(decl, message_1, messageNeedsName_1 ? getDisplayName(declaration) : undefined); + file.bindDiagnostics.push(multipleDefaultExports_1 ? ts.addRelatedInfo(diag, createDiagnosticForNode(declarationName_1, index === 0 ? ts.Diagnostics.Another_export_default_is_here : ts.Diagnostics.and_here)) : diag); + if (multipleDefaultExports_1) { + relatedInformation_1.push(createDiagnosticForNode(decl, ts.Diagnostics.The_first_export_default_is_here)); + } + }); + var diag = createDiagnosticForNode(declarationName_1, message_1, messageNeedsName_1 ? getDisplayName(node) : undefined); + file.bindDiagnostics.push(ts.addRelatedInfo.apply(void 0, __spreadArrays([diag], relatedInformation_1))); + symbol = createSymbol(0 /* None */, name); + } + } + } + addDeclarationToSymbol(symbol, node, includes); + if (symbol.parent) { + ts.Debug.assert(symbol.parent === parent, "Existing symbol parent should match new one"); + } + else { + symbol.parent = parent; + } + return symbol; + } + function declareModuleMember(node, symbolFlags, symbolExcludes) { + var hasExportModifier = ts.getCombinedModifierFlags(node) & 1 /* Export */; + if (symbolFlags & 2097152 /* Alias */) { + if (node.kind === 263 /* ExportSpecifier */ || (node.kind === 253 /* ImportEqualsDeclaration */ && hasExportModifier)) { + return declareSymbol(container.symbol.exports, container.symbol, node, symbolFlags, symbolExcludes); + } + else { + return declareSymbol(container.locals, /*parent*/ undefined, node, symbolFlags, symbolExcludes); + } + } + else { + // Exported module members are given 2 symbols: A local symbol that is classified with an ExportValue flag, + // and an associated export symbol with all the correct flags set on it. There are 2 main reasons: + // + // 1. We treat locals and exports of the same name as mutually exclusive within a container. + // That means the binder will issue a Duplicate Identifier error if you mix locals and exports + // with the same name in the same container. + // TODO: Make this a more specific error and decouple it from the exclusion logic. + // 2. When we checkIdentifier in the checker, we set its resolved symbol to the local symbol, + // but return the export symbol (by calling getExportSymbolOfValueSymbolIfExported). That way + // when the emitter comes back to it, it knows not to qualify the name if it was found in a containing scope. + // NOTE: Nested ambient modules always should go to to 'locals' table to prevent their automatic merge + // during global merging in the checker. Why? The only case when ambient module is permitted inside another module is module augmentation + // and this case is specially handled. Module augmentations should only be merged with original module definition + // and should never be merged directly with other augmentation, and the latter case would be possible if automatic merge is allowed. + if (ts.isJSDocTypeAlias(node)) + ts.Debug.assert(ts.isInJSFile(node)); // We shouldn't add symbols for JSDoc nodes if not in a JS file. + if ((!ts.isAmbientModule(node) && (hasExportModifier || container.flags & 64 /* ExportContext */)) || ts.isJSDocTypeAlias(node)) { + if (!container.locals || (ts.hasModifier(node, 512 /* Default */) && !getDeclarationName(node))) { + return declareSymbol(container.symbol.exports, container.symbol, node, symbolFlags, symbolExcludes); // No local symbol for an unnamed default! + } + var exportKind = symbolFlags & 111551 /* Value */ ? 1048576 /* ExportValue */ : 0; + var local = declareSymbol(container.locals, /*parent*/ undefined, node, exportKind, symbolExcludes); + local.exportSymbol = declareSymbol(container.symbol.exports, container.symbol, node, symbolFlags, symbolExcludes); + node.localSymbol = local; + return local; + } + else { + return declareSymbol(container.locals, /*parent*/ undefined, node, symbolFlags, symbolExcludes); + } + } + } + // All container nodes are kept on a linked list in declaration order. This list is used by + // the getLocalNameOfContainer function in the type checker to validate that the local name + // used for a container is unique. + function bindContainer(node, containerFlags) { + // Before we recurse into a node's children, we first save the existing parent, container + // and block-container. Then after we pop out of processing the children, we restore + // these saved values. + var saveContainer = container; + var saveThisParentContainer = thisParentContainer; + var savedBlockScopeContainer = blockScopeContainer; + // Depending on what kind of node this is, we may have to adjust the current container + // and block-container. If the current node is a container, then it is automatically + // considered the current block-container as well. Also, for containers that we know + // may contain locals, we eagerly initialize the .locals field. We do this because + // it's highly likely that the .locals will be needed to place some child in (for example, + // a parameter, or variable declaration). + // + // However, we do not proactively create the .locals for block-containers because it's + // totally normal and common for block-containers to never actually have a block-scoped + // variable in them. We don't want to end up allocating an object for every 'block' we + // run into when most of them won't be necessary. + // + // Finally, if this is a block-container, then we clear out any existing .locals object + // it may contain within it. This happens in incremental scenarios. Because we can be + // reusing a node from a previous compilation, that node may have had 'locals' created + // for it. We must clear this so we don't accidentally move any stale data forward from + // a previous compilation. + if (containerFlags & 1 /* IsContainer */) { + if (node.kind !== 202 /* ArrowFunction */) { + thisParentContainer = container; + } + container = blockScopeContainer = node; + if (containerFlags & 32 /* HasLocals */) { + container.locals = ts.createSymbolTable(); + } + addToContainerChain(container); + } + else if (containerFlags & 2 /* IsBlockScopedContainer */) { + blockScopeContainer = node; + blockScopeContainer.locals = undefined; + } + if (containerFlags & 4 /* IsControlFlowContainer */) { + var saveCurrentFlow = currentFlow; + var saveBreakTarget = currentBreakTarget; + var saveContinueTarget = currentContinueTarget; + var saveReturnTarget = currentReturnTarget; + var saveExceptionTarget = currentExceptionTarget; + var saveActiveLabelList = activeLabelList; + var saveHasExplicitReturn = hasExplicitReturn; + var isIIFE = containerFlags & 16 /* IsFunctionExpression */ && !ts.hasModifier(node, 256 /* Async */) && + !node.asteriskToken && !!ts.getImmediatelyInvokedFunctionExpression(node); + // A non-async, non-generator IIFE is considered part of the containing control flow. Return statements behave + // similarly to break statements that exit to a label just past the statement body. + if (!isIIFE) { + currentFlow = initFlowNode({ flags: 2 /* Start */ }); + if (containerFlags & (16 /* IsFunctionExpression */ | 128 /* IsObjectLiteralOrClassExpressionMethod */)) { + currentFlow.node = node; + } + } + // We create a return control flow graph for IIFEs and constructors. For constructors + // we use the return control flow graph in strict property initialization checks. + currentReturnTarget = isIIFE || node.kind === 162 /* Constructor */ ? createBranchLabel() : undefined; + currentExceptionTarget = undefined; + currentBreakTarget = undefined; + currentContinueTarget = undefined; + activeLabelList = undefined; + hasExplicitReturn = false; + bindChildren(node); + // Reset all reachability check related flags on node (for incremental scenarios) + node.flags &= ~2816 /* ReachabilityAndEmitFlags */; + if (!(currentFlow.flags & 1 /* Unreachable */) && containerFlags & 8 /* IsFunctionLike */ && ts.nodeIsPresent(node.body)) { + node.flags |= 256 /* HasImplicitReturn */; + if (hasExplicitReturn) + node.flags |= 512 /* HasExplicitReturn */; + node.endFlowNode = currentFlow; + } + if (node.kind === 290 /* SourceFile */) { + node.flags |= emitFlags; + } + if (currentReturnTarget) { + addAntecedent(currentReturnTarget, currentFlow); + currentFlow = finishFlowLabel(currentReturnTarget); + if (node.kind === 162 /* Constructor */) { + node.returnFlowNode = currentFlow; + } + } + if (!isIIFE) { + currentFlow = saveCurrentFlow; + } + currentBreakTarget = saveBreakTarget; + currentContinueTarget = saveContinueTarget; + currentReturnTarget = saveReturnTarget; + currentExceptionTarget = saveExceptionTarget; + activeLabelList = saveActiveLabelList; + hasExplicitReturn = saveHasExplicitReturn; + } + else if (containerFlags & 64 /* IsInterface */) { + seenThisKeyword = false; + bindChildren(node); + node.flags = seenThisKeyword ? node.flags | 128 /* ContainsThis */ : node.flags & ~128 /* ContainsThis */; + } + else { + bindChildren(node); + } + container = saveContainer; + thisParentContainer = saveThisParentContainer; + blockScopeContainer = savedBlockScopeContainer; + } + function bindChildren(node) { + if (skipTransformFlagAggregation) { + bindChildrenWorker(node); + } + else if (node.transformFlags & 536870912 /* HasComputedFlags */) { + skipTransformFlagAggregation = true; + bindChildrenWorker(node); + skipTransformFlagAggregation = false; + subtreeTransformFlags |= node.transformFlags & ~getTransformFlagsSubtreeExclusions(node.kind); + } + else { + var savedSubtreeTransformFlags = subtreeTransformFlags; + subtreeTransformFlags = 0; + bindChildrenWorker(node); + subtreeTransformFlags = savedSubtreeTransformFlags | computeTransformFlagsForNode(node, subtreeTransformFlags); + } + } + function bindEachFunctionsFirst(nodes) { + bindEach(nodes, function (n) { return n.kind === 244 /* FunctionDeclaration */ ? bind(n) : undefined; }); + bindEach(nodes, function (n) { return n.kind !== 244 /* FunctionDeclaration */ ? bind(n) : undefined; }); + } + function bindEach(nodes, bindFunction) { + if (bindFunction === void 0) { bindFunction = bind; } + if (nodes === undefined) { + return; + } + if (skipTransformFlagAggregation) { + ts.forEach(nodes, bindFunction); + } + else { + var savedSubtreeTransformFlags = subtreeTransformFlags; + subtreeTransformFlags = 0 /* None */; + var nodeArrayFlags = 0 /* None */; + for (var _i = 0, nodes_2 = nodes; _i < nodes_2.length; _i++) { + var node = nodes_2[_i]; + bindFunction(node); + nodeArrayFlags |= node.transformFlags & ~536870912 /* HasComputedFlags */; + } + nodes.transformFlags = nodeArrayFlags | 536870912 /* HasComputedFlags */; + subtreeTransformFlags |= savedSubtreeTransformFlags; + } + } + function bindEachChild(node) { + ts.forEachChild(node, bind, bindEach); + } + function bindChildrenWorker(node) { + if (checkUnreachable(node)) { + bindEachChild(node); + bindJSDoc(node); + return; + } + if (node.kind >= 225 /* FirstStatement */ && node.kind <= 241 /* LastStatement */ && !options.allowUnreachableCode) { + node.flowNode = currentFlow; + } + switch (node.kind) { + case 229 /* WhileStatement */: + bindWhileStatement(node); + break; + case 228 /* DoStatement */: + bindDoStatement(node); + break; + case 230 /* ForStatement */: + bindForStatement(node); + break; + case 231 /* ForInStatement */: + case 232 /* ForOfStatement */: + bindForInOrForOfStatement(node); + break; + case 227 /* IfStatement */: + bindIfStatement(node); + break; + case 235 /* ReturnStatement */: + case 239 /* ThrowStatement */: + bindReturnOrThrow(node); + break; + case 234 /* BreakStatement */: + case 233 /* ContinueStatement */: + bindBreakOrContinueStatement(node); + break; + case 240 /* TryStatement */: + bindTryStatement(node); + break; + case 237 /* SwitchStatement */: + bindSwitchStatement(node); + break; + case 251 /* CaseBlock */: + bindCaseBlock(node); + break; + case 277 /* CaseClause */: + bindCaseClause(node); + break; + case 226 /* ExpressionStatement */: + bindExpressionStatement(node); + break; + case 238 /* LabeledStatement */: + bindLabeledStatement(node); + break; + case 207 /* PrefixUnaryExpression */: + bindPrefixUnaryExpressionFlow(node); + break; + case 208 /* PostfixUnaryExpression */: + bindPostfixUnaryExpressionFlow(node); + break; + case 209 /* BinaryExpression */: + bindBinaryExpressionFlow(node); + break; + case 203 /* DeleteExpression */: + bindDeleteExpressionFlow(node); + break; + case 210 /* ConditionalExpression */: + bindConditionalExpressionFlow(node); + break; + case 242 /* VariableDeclaration */: + bindVariableDeclarationFlow(node); + break; + case 194 /* PropertyAccessExpression */: + case 195 /* ElementAccessExpression */: + bindAccessExpressionFlow(node); + break; + case 196 /* CallExpression */: + bindCallExpressionFlow(node); + break; + case 218 /* NonNullExpression */: + bindNonNullExpressionFlow(node); + break; + case 322 /* JSDocTypedefTag */: + case 315 /* JSDocCallbackTag */: + case 316 /* JSDocEnumTag */: + bindJSDocTypeAlias(node); + break; + // In source files and blocks, bind functions first to match hoisting that occurs at runtime + case 290 /* SourceFile */: { + bindEachFunctionsFirst(node.statements); + bind(node.endOfFileToken); + break; + } + case 223 /* Block */: + case 250 /* ModuleBlock */: + bindEachFunctionsFirst(node.statements); + break; + default: + bindEachChild(node); + break; + } + bindJSDoc(node); + } + function isNarrowingExpression(expr) { + switch (expr.kind) { + case 75 /* Identifier */: + case 104 /* ThisKeyword */: + case 194 /* PropertyAccessExpression */: + case 195 /* ElementAccessExpression */: + return containsNarrowableReference(expr); + case 196 /* CallExpression */: + return hasNarrowableArgument(expr); + case 200 /* ParenthesizedExpression */: + return isNarrowingExpression(expr.expression); + case 209 /* BinaryExpression */: + return isNarrowingBinaryExpression(expr); + case 207 /* PrefixUnaryExpression */: + return expr.operator === 53 /* ExclamationToken */ && isNarrowingExpression(expr.operand); + case 204 /* TypeOfExpression */: + return isNarrowingExpression(expr.expression); + } + return false; + } + function isNarrowableReference(expr) { + return expr.kind === 75 /* Identifier */ || expr.kind === 104 /* ThisKeyword */ || expr.kind === 102 /* SuperKeyword */ || + (ts.isPropertyAccessExpression(expr) || ts.isNonNullExpression(expr) || ts.isParenthesizedExpression(expr)) && isNarrowableReference(expr.expression) || + ts.isElementAccessExpression(expr) && ts.isStringOrNumericLiteralLike(expr.argumentExpression) && isNarrowableReference(expr.expression); + } + function containsNarrowableReference(expr) { + return isNarrowableReference(expr) || ts.isOptionalChain(expr) && containsNarrowableReference(expr.expression); + } + function hasNarrowableArgument(expr) { + if (expr.arguments) { + for (var _i = 0, _a = expr.arguments; _i < _a.length; _i++) { + var argument = _a[_i]; + if (containsNarrowableReference(argument)) { + return true; + } + } + } + if (expr.expression.kind === 194 /* PropertyAccessExpression */ && + containsNarrowableReference(expr.expression.expression)) { + return true; + } + return false; + } + function isNarrowingTypeofOperands(expr1, expr2) { + return ts.isTypeOfExpression(expr1) && isNarrowableOperand(expr1.expression) && ts.isStringLiteralLike(expr2); + } + function isNarrowableInOperands(left, right) { + return ts.isStringLiteralLike(left) && isNarrowingExpression(right); + } + function isNarrowingBinaryExpression(expr) { + switch (expr.operatorToken.kind) { + case 62 /* EqualsToken */: + return containsNarrowableReference(expr.left); + case 34 /* EqualsEqualsToken */: + case 35 /* ExclamationEqualsToken */: + case 36 /* EqualsEqualsEqualsToken */: + case 37 /* ExclamationEqualsEqualsToken */: + return isNarrowableOperand(expr.left) || isNarrowableOperand(expr.right) || + isNarrowingTypeofOperands(expr.right, expr.left) || isNarrowingTypeofOperands(expr.left, expr.right); + case 98 /* InstanceOfKeyword */: + return isNarrowableOperand(expr.left); + case 97 /* InKeyword */: + return isNarrowableInOperands(expr.left, expr.right); + case 27 /* CommaToken */: + return isNarrowingExpression(expr.right); + } + return false; + } + function isNarrowableOperand(expr) { + switch (expr.kind) { + case 200 /* ParenthesizedExpression */: + return isNarrowableOperand(expr.expression); + case 209 /* BinaryExpression */: + switch (expr.operatorToken.kind) { + case 62 /* EqualsToken */: + return isNarrowableOperand(expr.left); + case 27 /* CommaToken */: + return isNarrowableOperand(expr.right); + } + } + return containsNarrowableReference(expr); + } + function createBranchLabel() { + return initFlowNode({ flags: 4 /* BranchLabel */, antecedents: undefined }); + } + function createLoopLabel() { + return initFlowNode({ flags: 8 /* LoopLabel */, antecedents: undefined }); + } + function createReduceLabel(target, antecedents, antecedent) { + return initFlowNode({ flags: 1024 /* ReduceLabel */, target: target, antecedents: antecedents, antecedent: antecedent }); + } + function setFlowNodeReferenced(flow) { + // On first reference we set the Referenced flag, thereafter we set the Shared flag + flow.flags |= flow.flags & 2048 /* Referenced */ ? 4096 /* Shared */ : 2048 /* Referenced */; + } + function addAntecedent(label, antecedent) { + if (!(antecedent.flags & 1 /* Unreachable */) && !ts.contains(label.antecedents, antecedent)) { + (label.antecedents || (label.antecedents = [])).push(antecedent); + setFlowNodeReferenced(antecedent); + } + } + function createFlowCondition(flags, antecedent, expression) { + if (antecedent.flags & 1 /* Unreachable */) { + return antecedent; + } + if (!expression) { + return flags & 32 /* TrueCondition */ ? antecedent : unreachableFlow; + } + if ((expression.kind === 106 /* TrueKeyword */ && flags & 64 /* FalseCondition */ || + expression.kind === 91 /* FalseKeyword */ && flags & 32 /* TrueCondition */) && + !ts.isExpressionOfOptionalChainRoot(expression) && !ts.isNullishCoalesce(expression.parent)) { + return unreachableFlow; + } + if (!isNarrowingExpression(expression)) { + return antecedent; + } + setFlowNodeReferenced(antecedent); + return initFlowNode({ flags: flags, antecedent: antecedent, node: expression }); + } + function createFlowSwitchClause(antecedent, switchStatement, clauseStart, clauseEnd) { + setFlowNodeReferenced(antecedent); + return initFlowNode({ flags: 128 /* SwitchClause */, antecedent: antecedent, switchStatement: switchStatement, clauseStart: clauseStart, clauseEnd: clauseEnd }); + } + function createFlowMutation(flags, antecedent, node) { + setFlowNodeReferenced(antecedent); + var result = initFlowNode({ flags: flags, antecedent: antecedent, node: node }); + if (currentExceptionTarget) { + addAntecedent(currentExceptionTarget, result); + } + return result; + } + function createFlowCall(antecedent, node) { + setFlowNodeReferenced(antecedent); + return initFlowNode({ flags: 512 /* Call */, antecedent: antecedent, node: node }); + } + function finishFlowLabel(flow) { + var antecedents = flow.antecedents; + if (!antecedents) { + return unreachableFlow; + } + if (antecedents.length === 1) { + return antecedents[0]; + } + return flow; + } + function isStatementCondition(node) { + var parent = node.parent; + switch (parent.kind) { + case 227 /* IfStatement */: + case 229 /* WhileStatement */: + case 228 /* DoStatement */: + return parent.expression === node; + case 230 /* ForStatement */: + case 210 /* ConditionalExpression */: + return parent.condition === node; + } + return false; + } + function isLogicalExpression(node) { + while (true) { + if (node.kind === 200 /* ParenthesizedExpression */) { + node = node.expression; + } + else if (node.kind === 207 /* PrefixUnaryExpression */ && node.operator === 53 /* ExclamationToken */) { + node = node.operand; + } + else { + return node.kind === 209 /* BinaryExpression */ && (node.operatorToken.kind === 55 /* AmpersandAmpersandToken */ || + node.operatorToken.kind === 56 /* BarBarToken */ || + node.operatorToken.kind === 60 /* QuestionQuestionToken */); + } + } + } + function isTopLevelLogicalExpression(node) { + while (ts.isParenthesizedExpression(node.parent) || + ts.isPrefixUnaryExpression(node.parent) && node.parent.operator === 53 /* ExclamationToken */) { + node = node.parent; + } + return !isStatementCondition(node) && + !isLogicalExpression(node.parent) && + !(ts.isOptionalChain(node.parent) && node.parent.expression === node); + } + function doWithConditionalBranches(action, value, trueTarget, falseTarget) { + var savedTrueTarget = currentTrueTarget; + var savedFalseTarget = currentFalseTarget; + currentTrueTarget = trueTarget; + currentFalseTarget = falseTarget; + action(value); + currentTrueTarget = savedTrueTarget; + currentFalseTarget = savedFalseTarget; + } + function bindCondition(node, trueTarget, falseTarget) { + doWithConditionalBranches(bind, node, trueTarget, falseTarget); + if (!node || !isLogicalExpression(node) && !(ts.isOptionalChain(node) && ts.isOutermostOptionalChain(node))) { + addAntecedent(trueTarget, createFlowCondition(32 /* TrueCondition */, currentFlow, node)); + addAntecedent(falseTarget, createFlowCondition(64 /* FalseCondition */, currentFlow, node)); + } + } + function bindIterativeStatement(node, breakTarget, continueTarget) { + var saveBreakTarget = currentBreakTarget; + var saveContinueTarget = currentContinueTarget; + currentBreakTarget = breakTarget; + currentContinueTarget = continueTarget; + bind(node); + currentBreakTarget = saveBreakTarget; + currentContinueTarget = saveContinueTarget; + } + function setContinueTarget(node, target) { + var label = activeLabelList; + while (label && node.parent.kind === 238 /* LabeledStatement */) { + label.continueTarget = target; + label = label.next; + node = node.parent; + } + return target; + } + function bindWhileStatement(node) { + var preWhileLabel = setContinueTarget(node, createLoopLabel()); + var preBodyLabel = createBranchLabel(); + var postWhileLabel = createBranchLabel(); + addAntecedent(preWhileLabel, currentFlow); + currentFlow = preWhileLabel; + bindCondition(node.expression, preBodyLabel, postWhileLabel); + currentFlow = finishFlowLabel(preBodyLabel); + bindIterativeStatement(node.statement, postWhileLabel, preWhileLabel); + addAntecedent(preWhileLabel, currentFlow); + currentFlow = finishFlowLabel(postWhileLabel); + } + function bindDoStatement(node) { + var preDoLabel = createLoopLabel(); + var preConditionLabel = setContinueTarget(node, createBranchLabel()); + var postDoLabel = createBranchLabel(); + addAntecedent(preDoLabel, currentFlow); + currentFlow = preDoLabel; + bindIterativeStatement(node.statement, postDoLabel, preConditionLabel); + addAntecedent(preConditionLabel, currentFlow); + currentFlow = finishFlowLabel(preConditionLabel); + bindCondition(node.expression, preDoLabel, postDoLabel); + currentFlow = finishFlowLabel(postDoLabel); + } + function bindForStatement(node) { + var preLoopLabel = setContinueTarget(node, createLoopLabel()); + var preBodyLabel = createBranchLabel(); + var postLoopLabel = createBranchLabel(); + bind(node.initializer); + addAntecedent(preLoopLabel, currentFlow); + currentFlow = preLoopLabel; + bindCondition(node.condition, preBodyLabel, postLoopLabel); + currentFlow = finishFlowLabel(preBodyLabel); + bindIterativeStatement(node.statement, postLoopLabel, preLoopLabel); + bind(node.incrementor); + addAntecedent(preLoopLabel, currentFlow); + currentFlow = finishFlowLabel(postLoopLabel); + } + function bindForInOrForOfStatement(node) { + var preLoopLabel = setContinueTarget(node, createLoopLabel()); + var postLoopLabel = createBranchLabel(); + bind(node.expression); + addAntecedent(preLoopLabel, currentFlow); + currentFlow = preLoopLabel; + if (node.kind === 232 /* ForOfStatement */) { + bind(node.awaitModifier); + } + addAntecedent(postLoopLabel, currentFlow); + bind(node.initializer); + if (node.initializer.kind !== 243 /* VariableDeclarationList */) { + bindAssignmentTargetFlow(node.initializer); + } + bindIterativeStatement(node.statement, postLoopLabel, preLoopLabel); + addAntecedent(preLoopLabel, currentFlow); + currentFlow = finishFlowLabel(postLoopLabel); + } + function bindIfStatement(node) { + var thenLabel = createBranchLabel(); + var elseLabel = createBranchLabel(); + var postIfLabel = createBranchLabel(); + bindCondition(node.expression, thenLabel, elseLabel); + currentFlow = finishFlowLabel(thenLabel); + bind(node.thenStatement); + addAntecedent(postIfLabel, currentFlow); + currentFlow = finishFlowLabel(elseLabel); + bind(node.elseStatement); + addAntecedent(postIfLabel, currentFlow); + currentFlow = finishFlowLabel(postIfLabel); + } + function bindReturnOrThrow(node) { + bind(node.expression); + if (node.kind === 235 /* ReturnStatement */) { + hasExplicitReturn = true; + if (currentReturnTarget) { + addAntecedent(currentReturnTarget, currentFlow); + } + } + currentFlow = unreachableFlow; + } + function findActiveLabel(name) { + for (var label = activeLabelList; label; label = label.next) { + if (label.name === name) { + return label; + } + } + return undefined; + } + function bindBreakOrContinueFlow(node, breakTarget, continueTarget) { + var flowLabel = node.kind === 234 /* BreakStatement */ ? breakTarget : continueTarget; + if (flowLabel) { + addAntecedent(flowLabel, currentFlow); + currentFlow = unreachableFlow; + } + } + function bindBreakOrContinueStatement(node) { + bind(node.label); + if (node.label) { + var activeLabel = findActiveLabel(node.label.escapedText); + if (activeLabel) { + activeLabel.referenced = true; + bindBreakOrContinueFlow(node, activeLabel.breakTarget, activeLabel.continueTarget); + } + } + else { + bindBreakOrContinueFlow(node, currentBreakTarget, currentContinueTarget); + } + } + function bindTryStatement(node) { + // We conservatively assume that *any* code in the try block can cause an exception, but we only need + // to track code that causes mutations (because only mutations widen the possible control flow type of + // a variable). The exceptionLabel is the target label for control flows that result from exceptions. + // We add all mutation flow nodes as antecedents of this label such that we can analyze them as possible + // antecedents of the start of catch or finally blocks. Furthermore, we add the current control flow to + // represent exceptions that occur before any mutations. + var saveReturnTarget = currentReturnTarget; + var saveExceptionTarget = currentExceptionTarget; + var normalExitLabel = createBranchLabel(); + var returnLabel = createBranchLabel(); + var exceptionLabel = createBranchLabel(); + if (node.finallyBlock) { + currentReturnTarget = returnLabel; + } + addAntecedent(exceptionLabel, currentFlow); + currentExceptionTarget = exceptionLabel; + bind(node.tryBlock); + addAntecedent(normalExitLabel, currentFlow); + if (node.catchClause) { + // Start of catch clause is the target of exceptions from try block. + currentFlow = finishFlowLabel(exceptionLabel); + // The currentExceptionTarget now represents control flows from exceptions in the catch clause. + // Effectively, in a try-catch-finally, if an exception occurs in the try block, the catch block + // acts like a second try block. + exceptionLabel = createBranchLabel(); + addAntecedent(exceptionLabel, currentFlow); + currentExceptionTarget = exceptionLabel; + bind(node.catchClause); + addAntecedent(normalExitLabel, currentFlow); + } + currentReturnTarget = saveReturnTarget; + currentExceptionTarget = saveExceptionTarget; + if (node.finallyBlock) { + // Possible ways control can reach the finally block: + // 1) Normal completion of try block of a try-finally or try-catch-finally + // 2) Normal completion of catch block (following exception in try block) of a try-catch-finally + // 3) Return in try or catch block of a try-finally or try-catch-finally + // 4) Exception in try block of a try-finally + // 5) Exception in catch block of a try-catch-finally + // When analyzing a control flow graph that starts inside a finally block we want to consider all + // five possibilities above. However, when analyzing a control flow graph that starts outside (past) + // the finally block, we only want to consider the first two (if we're past a finally block then it + // must have completed normally). Likewise, when analyzing a control flow graph from return statements + // in try or catch blocks in an IIFE, we only want to consider the third. To make this possible, we + // inject a ReduceLabel node into the control flow graph. This node contains an alternate reduced + // set of antecedents for the pre-finally label. As control flow analysis passes by a ReduceLabel + // node, the pre-finally label is temporarily switched to the reduced antecedent set. + var finallyLabel = createBranchLabel(); + finallyLabel.antecedents = ts.concatenate(ts.concatenate(normalExitLabel.antecedents, exceptionLabel.antecedents), returnLabel.antecedents); + currentFlow = finallyLabel; + bind(node.finallyBlock); + if (currentFlow.flags & 1 /* Unreachable */) { + // If the end of the finally block is unreachable, the end of the entire try statement is unreachable. + currentFlow = unreachableFlow; + } + else { + // If we have an IIFE return target and return statements in the try or catch blocks, add a control + // flow that goes back through the finally block and back through only the return statements. + if (currentReturnTarget && returnLabel.antecedents) { + addAntecedent(currentReturnTarget, createReduceLabel(finallyLabel, returnLabel.antecedents, currentFlow)); + } + // If the end of the finally block is reachable, but the end of the try and catch blocks are not, + // convert the current flow to unreachable. For example, 'try { return 1; } finally { ... }' should + // result in an unreachable current control flow. + currentFlow = normalExitLabel.antecedents ? createReduceLabel(finallyLabel, normalExitLabel.antecedents, currentFlow) : unreachableFlow; + } + } + else { + currentFlow = finishFlowLabel(normalExitLabel); + } + } + function bindSwitchStatement(node) { + var postSwitchLabel = createBranchLabel(); + bind(node.expression); + var saveBreakTarget = currentBreakTarget; + var savePreSwitchCaseFlow = preSwitchCaseFlow; + currentBreakTarget = postSwitchLabel; + preSwitchCaseFlow = currentFlow; + bind(node.caseBlock); + addAntecedent(postSwitchLabel, currentFlow); + var hasDefault = ts.forEach(node.caseBlock.clauses, function (c) { return c.kind === 278 /* DefaultClause */; }); + // We mark a switch statement as possibly exhaustive if it has no default clause and if all + // case clauses have unreachable end points (e.g. they all return). Note, we no longer need + // this property in control flow analysis, it's there only for backwards compatibility. + node.possiblyExhaustive = !hasDefault && !postSwitchLabel.antecedents; + if (!hasDefault) { + addAntecedent(postSwitchLabel, createFlowSwitchClause(preSwitchCaseFlow, node, 0, 0)); + } + currentBreakTarget = saveBreakTarget; + preSwitchCaseFlow = savePreSwitchCaseFlow; + currentFlow = finishFlowLabel(postSwitchLabel); + } + function bindCaseBlock(node) { + var savedSubtreeTransformFlags = subtreeTransformFlags; + subtreeTransformFlags = 0; + var clauses = node.clauses; + var isNarrowingSwitch = isNarrowingExpression(node.parent.expression); + var fallthroughFlow = unreachableFlow; + for (var i = 0; i < clauses.length; i++) { + var clauseStart = i; + while (!clauses[i].statements.length && i + 1 < clauses.length) { + bind(clauses[i]); + i++; + } + var preCaseLabel = createBranchLabel(); + addAntecedent(preCaseLabel, isNarrowingSwitch ? createFlowSwitchClause(preSwitchCaseFlow, node.parent, clauseStart, i + 1) : preSwitchCaseFlow); + addAntecedent(preCaseLabel, fallthroughFlow); + currentFlow = finishFlowLabel(preCaseLabel); + var clause = clauses[i]; + bind(clause); + fallthroughFlow = currentFlow; + if (!(currentFlow.flags & 1 /* Unreachable */) && i !== clauses.length - 1 && options.noFallthroughCasesInSwitch) { + clause.fallthroughFlowNode = currentFlow; + } + } + clauses.transformFlags = subtreeTransformFlags | 536870912 /* HasComputedFlags */; + subtreeTransformFlags |= savedSubtreeTransformFlags; + } + function bindCaseClause(node) { + var saveCurrentFlow = currentFlow; + currentFlow = preSwitchCaseFlow; + bind(node.expression); + currentFlow = saveCurrentFlow; + bindEach(node.statements); + } + function bindExpressionStatement(node) { + bind(node.expression); + // A top level call expression with a dotted function name and at least one argument + // is potentially an assertion and is therefore included in the control flow. + if (node.expression.kind === 196 /* CallExpression */) { + var call = node.expression; + if (ts.isDottedName(call.expression)) { + currentFlow = createFlowCall(currentFlow, call); + } + } + } + function bindLabeledStatement(node) { + var postStatementLabel = createBranchLabel(); + activeLabelList = { + next: activeLabelList, + name: node.label.escapedText, + breakTarget: postStatementLabel, + continueTarget: undefined, + referenced: false + }; + bind(node.label); + bind(node.statement); + if (!activeLabelList.referenced && !options.allowUnusedLabels) { + errorOrSuggestionOnNode(ts.unusedLabelIsError(options), node.label, ts.Diagnostics.Unused_label); + } + activeLabelList = activeLabelList.next; + addAntecedent(postStatementLabel, currentFlow); + currentFlow = finishFlowLabel(postStatementLabel); + } + function bindDestructuringTargetFlow(node) { + if (node.kind === 209 /* BinaryExpression */ && node.operatorToken.kind === 62 /* EqualsToken */) { + bindAssignmentTargetFlow(node.left); + } + else { + bindAssignmentTargetFlow(node); + } + } + function bindAssignmentTargetFlow(node) { + if (isNarrowableReference(node)) { + currentFlow = createFlowMutation(16 /* Assignment */, currentFlow, node); + } + else if (node.kind === 192 /* ArrayLiteralExpression */) { + for (var _i = 0, _a = node.elements; _i < _a.length; _i++) { + var e = _a[_i]; + if (e.kind === 213 /* SpreadElement */) { + bindAssignmentTargetFlow(e.expression); + } + else { + bindDestructuringTargetFlow(e); + } + } + } + else if (node.kind === 193 /* ObjectLiteralExpression */) { + for (var _b = 0, _c = node.properties; _b < _c.length; _b++) { + var p = _c[_b]; + if (p.kind === 281 /* PropertyAssignment */) { + bindDestructuringTargetFlow(p.initializer); + } + else if (p.kind === 282 /* ShorthandPropertyAssignment */) { + bindAssignmentTargetFlow(p.name); + } + else if (p.kind === 283 /* SpreadAssignment */) { + bindAssignmentTargetFlow(p.expression); + } + } + } + } + function bindLogicalExpression(node, trueTarget, falseTarget) { + var preRightLabel = createBranchLabel(); + if (node.operatorToken.kind === 55 /* AmpersandAmpersandToken */) { + bindCondition(node.left, preRightLabel, falseTarget); + } + else { + bindCondition(node.left, trueTarget, preRightLabel); + } + currentFlow = finishFlowLabel(preRightLabel); + bind(node.operatorToken); + bindCondition(node.right, trueTarget, falseTarget); + } + function bindPrefixUnaryExpressionFlow(node) { + if (node.operator === 53 /* ExclamationToken */) { + var saveTrueTarget = currentTrueTarget; + currentTrueTarget = currentFalseTarget; + currentFalseTarget = saveTrueTarget; + bindEachChild(node); + currentFalseTarget = currentTrueTarget; + currentTrueTarget = saveTrueTarget; + } + else { + bindEachChild(node); + if (node.operator === 45 /* PlusPlusToken */ || node.operator === 46 /* MinusMinusToken */) { + bindAssignmentTargetFlow(node.operand); + } + } + } + function bindPostfixUnaryExpressionFlow(node) { + bindEachChild(node); + if (node.operator === 45 /* PlusPlusToken */ || node.operator === 46 /* MinusMinusToken */) { + bindAssignmentTargetFlow(node.operand); + } + } + var BindBinaryExpressionFlowState; + (function (BindBinaryExpressionFlowState) { + BindBinaryExpressionFlowState[BindBinaryExpressionFlowState["BindThenBindChildren"] = 0] = "BindThenBindChildren"; + BindBinaryExpressionFlowState[BindBinaryExpressionFlowState["MaybeBindLeft"] = 1] = "MaybeBindLeft"; + BindBinaryExpressionFlowState[BindBinaryExpressionFlowState["BindToken"] = 2] = "BindToken"; + BindBinaryExpressionFlowState[BindBinaryExpressionFlowState["BindRight"] = 3] = "BindRight"; + BindBinaryExpressionFlowState[BindBinaryExpressionFlowState["FinishBind"] = 4] = "FinishBind"; + })(BindBinaryExpressionFlowState || (BindBinaryExpressionFlowState = {})); + function bindBinaryExpressionFlow(node) { + var workStacks = { + expr: [node], + state: [1 /* MaybeBindLeft */], + inStrictMode: [undefined], + parent: [undefined], + subtreeFlags: [undefined] + }; + var stackIndex = 0; + while (stackIndex >= 0) { + node = workStacks.expr[stackIndex]; + switch (workStacks.state[stackIndex]) { + case 0 /* BindThenBindChildren */: { + // This state is used only when recuring, to emulate the work that `bind` does before + // reaching `bindChildren`. A normal call to `bindBinaryExpressionFlow` will already have done this work. + node.parent = parent; + var saveInStrictMode = inStrictMode; + bindWorker(node); + var saveParent = parent; + parent = node; + var subtreeFlagsState = void 0; + // While this next part does the work of `bindChildren` before it descends into `bindChildrenWorker` + // and uses `subtreeFlagsState` to queue up the work that needs to be done once the node is bound. + if (skipTransformFlagAggregation) { + // do nothing extra + } + else if (node.transformFlags & 536870912 /* HasComputedFlags */) { + skipTransformFlagAggregation = true; + subtreeFlagsState = -1; + } + else { + var savedSubtreeTransformFlags = subtreeTransformFlags; + subtreeTransformFlags = 0; + subtreeFlagsState = savedSubtreeTransformFlags; + } + advanceState(1 /* MaybeBindLeft */, saveInStrictMode, saveParent, subtreeFlagsState); + break; + } + case 1 /* MaybeBindLeft */: { + var operator = node.operatorToken.kind; + // TODO: bindLogicalExpression is recursive - if we want to handle deeply nested `&&` expressions + // we'll need to handle the `bindLogicalExpression` scenarios in this state machine, too + // For now, though, since the common cases are chained `+`, leaving it recursive is fine + if (operator === 55 /* AmpersandAmpersandToken */ || operator === 56 /* BarBarToken */ || operator === 60 /* QuestionQuestionToken */) { + if (isTopLevelLogicalExpression(node)) { + var postExpressionLabel = createBranchLabel(); + bindLogicalExpression(node, postExpressionLabel, postExpressionLabel); + currentFlow = finishFlowLabel(postExpressionLabel); + } + else { + bindLogicalExpression(node, currentTrueTarget, currentFalseTarget); + } + completeNode(); + } + else { + advanceState(2 /* BindToken */); + maybeBind(node.left); + } + break; + } + case 2 /* BindToken */: { + advanceState(3 /* BindRight */); + maybeBind(node.operatorToken); + break; + } + case 3 /* BindRight */: { + advanceState(4 /* FinishBind */); + maybeBind(node.right); + break; + } + case 4 /* FinishBind */: { + var operator = node.operatorToken.kind; + if (ts.isAssignmentOperator(operator) && !ts.isAssignmentTarget(node)) { + bindAssignmentTargetFlow(node.left); + if (operator === 62 /* EqualsToken */ && node.left.kind === 195 /* ElementAccessExpression */) { + var elementAccess = node.left; + if (isNarrowableOperand(elementAccess.expression)) { + currentFlow = createFlowMutation(256 /* ArrayMutation */, currentFlow, node); + } + } + } + completeNode(); + break; + } + default: return ts.Debug.fail("Invalid state " + workStacks.state[stackIndex] + " for bindBinaryExpressionFlow"); + } + } + /** + * Note that `advanceState` sets the _current_ head state, and that `maybeBind` potentially pushes on a new + * head state; so `advanceState` must be called before any `maybeBind` during a state's execution. + */ + function advanceState(state, isInStrictMode, parent, subtreeFlags) { + workStacks.state[stackIndex] = state; + if (isInStrictMode !== undefined) { + workStacks.inStrictMode[stackIndex] = isInStrictMode; + } + if (parent !== undefined) { + workStacks.parent[stackIndex] = parent; + } + if (subtreeFlags !== undefined) { + workStacks.subtreeFlags[stackIndex] = subtreeFlags; + } + } + function completeNode() { + if (workStacks.inStrictMode[stackIndex] !== undefined) { + if (workStacks.subtreeFlags[stackIndex] === -1) { + skipTransformFlagAggregation = false; + subtreeTransformFlags |= node.transformFlags & ~getTransformFlagsSubtreeExclusions(node.kind); + } + else if (workStacks.subtreeFlags[stackIndex] !== undefined) { + subtreeTransformFlags = workStacks.subtreeFlags[stackIndex] | computeTransformFlagsForNode(node, subtreeTransformFlags); + } + inStrictMode = workStacks.inStrictMode[stackIndex]; + parent = workStacks.parent[stackIndex]; + } + stackIndex--; + } + /** + * If `node` is a BinaryExpression, adds it to the local work stack, otherwise recursively binds it + */ + function maybeBind(node) { + if (node && ts.isBinaryExpression(node)) { + stackIndex++; + workStacks.expr[stackIndex] = node; + workStacks.state[stackIndex] = 0 /* BindThenBindChildren */; + workStacks.inStrictMode[stackIndex] = undefined; + workStacks.parent[stackIndex] = undefined; + workStacks.subtreeFlags[stackIndex] = undefined; + } + else { + bind(node); + } + } + } + function bindDeleteExpressionFlow(node) { + bindEachChild(node); + if (node.expression.kind === 194 /* PropertyAccessExpression */) { + bindAssignmentTargetFlow(node.expression); + } + } + function bindConditionalExpressionFlow(node) { + var trueLabel = createBranchLabel(); + var falseLabel = createBranchLabel(); + var postExpressionLabel = createBranchLabel(); + bindCondition(node.condition, trueLabel, falseLabel); + currentFlow = finishFlowLabel(trueLabel); + bind(node.questionToken); + bind(node.whenTrue); + addAntecedent(postExpressionLabel, currentFlow); + currentFlow = finishFlowLabel(falseLabel); + bind(node.colonToken); + bind(node.whenFalse); + addAntecedent(postExpressionLabel, currentFlow); + currentFlow = finishFlowLabel(postExpressionLabel); + } + function bindInitializedVariableFlow(node) { + var name = !ts.isOmittedExpression(node) ? node.name : undefined; + if (ts.isBindingPattern(name)) { + for (var _i = 0, _a = name.elements; _i < _a.length; _i++) { + var child = _a[_i]; + bindInitializedVariableFlow(child); + } + } + else { + currentFlow = createFlowMutation(16 /* Assignment */, currentFlow, node); + } + } + function bindVariableDeclarationFlow(node) { + bindEachChild(node); + if (node.initializer || ts.isForInOrOfStatement(node.parent.parent)) { + bindInitializedVariableFlow(node); + } + } + function bindJSDocTypeAlias(node) { + node.tagName.parent = node; + if (node.kind !== 316 /* JSDocEnumTag */ && node.fullName) { + setParentPointers(node, node.fullName); + } + } + function bindJSDocClassTag(node) { + bindEachChild(node); + var host = ts.getHostSignatureFromJSDoc(node); + if (host && host.kind !== 161 /* MethodDeclaration */) { + addDeclarationToSymbol(host.symbol, host, 32 /* Class */); + } + } + function bindOptionalExpression(node, trueTarget, falseTarget) { + doWithConditionalBranches(bind, node, trueTarget, falseTarget); + if (!ts.isOptionalChain(node) || ts.isOutermostOptionalChain(node)) { + addAntecedent(trueTarget, createFlowCondition(32 /* TrueCondition */, currentFlow, node)); + addAntecedent(falseTarget, createFlowCondition(64 /* FalseCondition */, currentFlow, node)); + } + } + function bindOptionalChainRest(node) { + switch (node.kind) { + case 194 /* PropertyAccessExpression */: + bind(node.questionDotToken); + bind(node.name); + break; + case 195 /* ElementAccessExpression */: + bind(node.questionDotToken); + bind(node.argumentExpression); + break; + case 196 /* CallExpression */: + bind(node.questionDotToken); + bindEach(node.typeArguments); + bindEach(node.arguments); + break; + } + } + function bindOptionalChain(node, trueTarget, falseTarget) { + // For an optional chain, we emulate the behavior of a logical expression: + // + // a?.b -> a && a.b + // a?.b.c -> a && a.b.c + // a?.b?.c -> a && a.b && a.b.c + // a?.[x = 1] -> a && a[x = 1] + // + // To do this we descend through the chain until we reach the root of a chain (the expression with a `?.`) + // and build it's CFA graph as if it were the first condition (`a && ...`). Then we bind the rest + // of the node as part of the "true" branch, and continue to do so as we ascend back up to the outermost + // chain node. We then treat the entire node as the right side of the expression. + var preChainLabel = ts.isOptionalChainRoot(node) ? createBranchLabel() : undefined; + bindOptionalExpression(node.expression, preChainLabel || trueTarget, falseTarget); + if (preChainLabel) { + currentFlow = finishFlowLabel(preChainLabel); + } + doWithConditionalBranches(bindOptionalChainRest, node, trueTarget, falseTarget); + if (ts.isOutermostOptionalChain(node)) { + addAntecedent(trueTarget, createFlowCondition(32 /* TrueCondition */, currentFlow, node)); + addAntecedent(falseTarget, createFlowCondition(64 /* FalseCondition */, currentFlow, node)); + } + } + function bindOptionalChainFlow(node) { + if (isTopLevelLogicalExpression(node)) { + var postExpressionLabel = createBranchLabel(); + bindOptionalChain(node, postExpressionLabel, postExpressionLabel); + currentFlow = finishFlowLabel(postExpressionLabel); + } + else { + bindOptionalChain(node, currentTrueTarget, currentFalseTarget); + } + } + function bindNonNullExpressionFlow(node) { + if (ts.isOptionalChain(node)) { + bindOptionalChainFlow(node); + } + else { + bindEachChild(node); + } + } + function bindAccessExpressionFlow(node) { + if (ts.isOptionalChain(node)) { + bindOptionalChainFlow(node); + } + else { + bindEachChild(node); + } + } + function bindCallExpressionFlow(node) { + if (ts.isOptionalChain(node)) { + bindOptionalChainFlow(node); + } + else { + // If the target of the call expression is a function expression or arrow function we have + // an immediately invoked function expression (IIFE). Initialize the flowNode property to + // the current control flow (which includes evaluation of the IIFE arguments). + var expr = ts.skipParentheses(node.expression); + if (expr.kind === 201 /* FunctionExpression */ || expr.kind === 202 /* ArrowFunction */) { + bindEach(node.typeArguments); + bindEach(node.arguments); + bind(node.expression); + } + else { + bindEachChild(node); + } + } + if (node.expression.kind === 194 /* PropertyAccessExpression */) { + var propertyAccess = node.expression; + if (ts.isIdentifier(propertyAccess.name) && isNarrowableOperand(propertyAccess.expression) && ts.isPushOrUnshiftIdentifier(propertyAccess.name)) { + currentFlow = createFlowMutation(256 /* ArrayMutation */, currentFlow, node); + } + } + } + function getContainerFlags(node) { + switch (node.kind) { + case 214 /* ClassExpression */: + case 245 /* ClassDeclaration */: + case 248 /* EnumDeclaration */: + case 193 /* ObjectLiteralExpression */: + case 173 /* TypeLiteral */: + case 304 /* JSDocTypeLiteral */: + case 274 /* JsxAttributes */: + return 1 /* IsContainer */; + case 246 /* InterfaceDeclaration */: + return 1 /* IsContainer */ | 64 /* IsInterface */; + case 249 /* ModuleDeclaration */: + case 247 /* TypeAliasDeclaration */: + case 186 /* MappedType */: + return 1 /* IsContainer */ | 32 /* HasLocals */; + case 290 /* SourceFile */: + return 1 /* IsContainer */ | 4 /* IsControlFlowContainer */ | 32 /* HasLocals */; + case 161 /* MethodDeclaration */: + if (ts.isObjectLiteralOrClassExpressionMethod(node)) { + return 1 /* IsContainer */ | 4 /* IsControlFlowContainer */ | 32 /* HasLocals */ | 8 /* IsFunctionLike */ | 128 /* IsObjectLiteralOrClassExpressionMethod */; + } + // falls through + case 162 /* Constructor */: + case 244 /* FunctionDeclaration */: + case 160 /* MethodSignature */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + case 165 /* CallSignature */: + case 305 /* JSDocSignature */: + case 300 /* JSDocFunctionType */: + case 170 /* FunctionType */: + case 166 /* ConstructSignature */: + case 167 /* IndexSignature */: + case 171 /* ConstructorType */: + return 1 /* IsContainer */ | 4 /* IsControlFlowContainer */ | 32 /* HasLocals */ | 8 /* IsFunctionLike */; + case 201 /* FunctionExpression */: + case 202 /* ArrowFunction */: + return 1 /* IsContainer */ | 4 /* IsControlFlowContainer */ | 32 /* HasLocals */ | 8 /* IsFunctionLike */ | 16 /* IsFunctionExpression */; + case 250 /* ModuleBlock */: + return 4 /* IsControlFlowContainer */; + case 159 /* PropertyDeclaration */: + return node.initializer ? 4 /* IsControlFlowContainer */ : 0; + case 280 /* CatchClause */: + case 230 /* ForStatement */: + case 231 /* ForInStatement */: + case 232 /* ForOfStatement */: + case 251 /* CaseBlock */: + return 2 /* IsBlockScopedContainer */; + case 223 /* Block */: + // do not treat blocks directly inside a function as a block-scoped-container. + // Locals that reside in this block should go to the function locals. Otherwise 'x' + // would not appear to be a redeclaration of a block scoped local in the following + // example: + // + // function foo() { + // var x; + // let x; + // } + // + // If we placed 'var x' into the function locals and 'let x' into the locals of + // the block, then there would be no collision. + // + // By not creating a new block-scoped-container here, we ensure that both 'var x' + // and 'let x' go into the Function-container's locals, and we do get a collision + // conflict. + return ts.isFunctionLike(node.parent) ? 0 /* None */ : 2 /* IsBlockScopedContainer */; + } + return 0 /* None */; + } + function addToContainerChain(next) { + if (lastContainer) { + lastContainer.nextContainer = next; + } + lastContainer = next; + } + function declareSymbolAndAddToSymbolTable(node, symbolFlags, symbolExcludes) { + switch (container.kind) { + // Modules, source files, and classes need specialized handling for how their + // members are declared (for example, a member of a class will go into a specific + // symbol table depending on if it is static or not). We defer to specialized + // handlers to take care of declaring these child members. + case 249 /* ModuleDeclaration */: + return declareModuleMember(node, symbolFlags, symbolExcludes); + case 290 /* SourceFile */: + return declareSourceFileMember(node, symbolFlags, symbolExcludes); + case 214 /* ClassExpression */: + case 245 /* ClassDeclaration */: + return declareClassMember(node, symbolFlags, symbolExcludes); + case 248 /* EnumDeclaration */: + return declareSymbol(container.symbol.exports, container.symbol, node, symbolFlags, symbolExcludes); + case 173 /* TypeLiteral */: + case 304 /* JSDocTypeLiteral */: + case 193 /* ObjectLiteralExpression */: + case 246 /* InterfaceDeclaration */: + case 274 /* JsxAttributes */: + // Interface/Object-types always have their children added to the 'members' of + // their container. They are only accessible through an instance of their + // container, and are never in scope otherwise (even inside the body of the + // object / type / interface declaring them). An exception is type parameters, + // which are in scope without qualification (similar to 'locals'). + return declareSymbol(container.symbol.members, container.symbol, node, symbolFlags, symbolExcludes); + case 170 /* FunctionType */: + case 171 /* ConstructorType */: + case 165 /* CallSignature */: + case 166 /* ConstructSignature */: + case 305 /* JSDocSignature */: + case 167 /* IndexSignature */: + case 161 /* MethodDeclaration */: + case 160 /* MethodSignature */: + case 162 /* Constructor */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + case 244 /* FunctionDeclaration */: + case 201 /* FunctionExpression */: + case 202 /* ArrowFunction */: + case 300 /* JSDocFunctionType */: + case 322 /* JSDocTypedefTag */: + case 315 /* JSDocCallbackTag */: + case 247 /* TypeAliasDeclaration */: + case 186 /* MappedType */: + // All the children of these container types are never visible through another + // symbol (i.e. through another symbol's 'exports' or 'members'). Instead, + // they're only accessed 'lexically' (i.e. from code that exists underneath + // their container in the tree). To accomplish this, we simply add their declared + // symbol to the 'locals' of the container. These symbols can then be found as + // the type checker walks up the containers, checking them for matching names. + return declareSymbol(container.locals, /*parent*/ undefined, node, symbolFlags, symbolExcludes); + } + } + function declareClassMember(node, symbolFlags, symbolExcludes) { + return ts.hasModifier(node, 32 /* Static */) + ? declareSymbol(container.symbol.exports, container.symbol, node, symbolFlags, symbolExcludes) + : declareSymbol(container.symbol.members, container.symbol, node, symbolFlags, symbolExcludes); + } + function declareSourceFileMember(node, symbolFlags, symbolExcludes) { + return ts.isExternalModule(file) + ? declareModuleMember(node, symbolFlags, symbolExcludes) + : declareSymbol(file.locals, /*parent*/ undefined, node, symbolFlags, symbolExcludes); + } + function hasExportDeclarations(node) { + var body = ts.isSourceFile(node) ? node : ts.tryCast(node.body, ts.isModuleBlock); + return !!body && body.statements.some(function (s) { return ts.isExportDeclaration(s) || ts.isExportAssignment(s); }); + } + function setExportContextFlag(node) { + // A declaration source file or ambient module declaration that contains no export declarations (but possibly regular + // declarations with export modifiers) is an export context in which declarations are implicitly exported. + if (node.flags & 8388608 /* Ambient */ && !hasExportDeclarations(node)) { + node.flags |= 64 /* ExportContext */; + } + else { + node.flags &= ~64 /* ExportContext */; + } + } + function bindModuleDeclaration(node) { + setExportContextFlag(node); + if (ts.isAmbientModule(node)) { + if (ts.hasModifier(node, 1 /* Export */)) { + errorOnFirstToken(node, ts.Diagnostics.export_modifier_cannot_be_applied_to_ambient_modules_and_module_augmentations_since_they_are_always_visible); + } + if (ts.isModuleAugmentationExternal(node)) { + declareModuleSymbol(node); + } + else { + var pattern = void 0; + if (node.name.kind === 10 /* StringLiteral */) { + var text = node.name.text; + if (ts.hasZeroOrOneAsteriskCharacter(text)) { + pattern = ts.tryParsePattern(text); + } + else { + errorOnFirstToken(node.name, ts.Diagnostics.Pattern_0_can_have_at_most_one_Asterisk_character, text); + } + } + var symbol = declareSymbolAndAddToSymbolTable(node, 512 /* ValueModule */, 110735 /* ValueModuleExcludes */); + file.patternAmbientModules = ts.append(file.patternAmbientModules, pattern && { pattern: pattern, symbol: symbol }); + } + } + else { + var state = declareModuleSymbol(node); + if (state !== 0 /* NonInstantiated */) { + var symbol = node.symbol; + // if module was already merged with some function, class or non-const enum, treat it as non-const-enum-only + symbol.constEnumOnlyModule = (!(symbol.flags & (16 /* Function */ | 32 /* Class */ | 256 /* RegularEnum */))) + // Current must be `const enum` only + && state === 2 /* ConstEnumOnly */ + // Can't have been set to 'false' in a previous merged symbol. ('undefined' OK) + && symbol.constEnumOnlyModule !== false; + } + } + } + function declareModuleSymbol(node) { + var state = getModuleInstanceState(node); + var instantiated = state !== 0 /* NonInstantiated */; + declareSymbolAndAddToSymbolTable(node, instantiated ? 512 /* ValueModule */ : 1024 /* NamespaceModule */, instantiated ? 110735 /* ValueModuleExcludes */ : 0 /* NamespaceModuleExcludes */); + return state; + } + function bindFunctionOrConstructorType(node) { + // For a given function symbol "<...>(...) => T" we want to generate a symbol identical + // to the one we would get for: { <...>(...): T } + // + // We do that by making an anonymous type literal symbol, and then setting the function + // symbol as its sole member. To the rest of the system, this symbol will be indistinguishable + // from an actual type literal symbol you would have gotten had you used the long form. + var symbol = createSymbol(131072 /* Signature */, getDeclarationName(node)); // TODO: GH#18217 + addDeclarationToSymbol(symbol, node, 131072 /* Signature */); + var typeLiteralSymbol = createSymbol(2048 /* TypeLiteral */, "__type" /* Type */); + addDeclarationToSymbol(typeLiteralSymbol, node, 2048 /* TypeLiteral */); + typeLiteralSymbol.members = ts.createSymbolTable(); + typeLiteralSymbol.members.set(symbol.escapedName, symbol); + } + function bindObjectLiteralExpression(node) { + var ElementKind; + (function (ElementKind) { + ElementKind[ElementKind["Property"] = 1] = "Property"; + ElementKind[ElementKind["Accessor"] = 2] = "Accessor"; + })(ElementKind || (ElementKind = {})); + if (inStrictMode && !ts.isAssignmentTarget(node)) { + var seen = ts.createUnderscoreEscapedMap(); + for (var _i = 0, _a = node.properties; _i < _a.length; _i++) { + var prop = _a[_i]; + if (prop.kind === 283 /* SpreadAssignment */ || prop.name.kind !== 75 /* Identifier */) { + continue; + } + var identifier = prop.name; + // ECMA-262 11.1.5 Object Initializer + // If previous is not undefined then throw a SyntaxError exception if any of the following conditions are true + // a.This production is contained in strict code and IsDataDescriptor(previous) is true and + // IsDataDescriptor(propId.descriptor) is true. + // b.IsDataDescriptor(previous) is true and IsAccessorDescriptor(propId.descriptor) is true. + // c.IsAccessorDescriptor(previous) is true and IsDataDescriptor(propId.descriptor) is true. + // d.IsAccessorDescriptor(previous) is true and IsAccessorDescriptor(propId.descriptor) is true + // and either both previous and propId.descriptor have[[Get]] fields or both previous and propId.descriptor have[[Set]] fields + var currentKind = prop.kind === 281 /* PropertyAssignment */ || prop.kind === 282 /* ShorthandPropertyAssignment */ || prop.kind === 161 /* MethodDeclaration */ + ? 1 /* Property */ + : 2 /* Accessor */; + var existingKind = seen.get(identifier.escapedText); + if (!existingKind) { + seen.set(identifier.escapedText, currentKind); + continue; + } + if (currentKind === 1 /* Property */ && existingKind === 1 /* Property */) { + var span = ts.getErrorSpanForNode(file, identifier); + file.bindDiagnostics.push(ts.createFileDiagnostic(file, span.start, span.length, ts.Diagnostics.An_object_literal_cannot_have_multiple_properties_with_the_same_name_in_strict_mode)); + } + } + } + return bindAnonymousDeclaration(node, 4096 /* ObjectLiteral */, "__object" /* Object */); + } + function bindJsxAttributes(node) { + return bindAnonymousDeclaration(node, 4096 /* ObjectLiteral */, "__jsxAttributes" /* JSXAttributes */); + } + function bindJsxAttribute(node, symbolFlags, symbolExcludes) { + return declareSymbolAndAddToSymbolTable(node, symbolFlags, symbolExcludes); + } + function bindAnonymousDeclaration(node, symbolFlags, name) { + var symbol = createSymbol(symbolFlags, name); + if (symbolFlags & (8 /* EnumMember */ | 106500 /* ClassMember */)) { + symbol.parent = container.symbol; + } + addDeclarationToSymbol(symbol, node, symbolFlags); + return symbol; + } + function bindBlockScopedDeclaration(node, symbolFlags, symbolExcludes) { + switch (blockScopeContainer.kind) { + case 249 /* ModuleDeclaration */: + declareModuleMember(node, symbolFlags, symbolExcludes); + break; + case 290 /* SourceFile */: + if (ts.isExternalOrCommonJsModule(container)) { + declareModuleMember(node, symbolFlags, symbolExcludes); + break; + } + // falls through + default: + if (!blockScopeContainer.locals) { + blockScopeContainer.locals = ts.createSymbolTable(); + addToContainerChain(blockScopeContainer); + } + declareSymbol(blockScopeContainer.locals, /*parent*/ undefined, node, symbolFlags, symbolExcludes); + } + } + function delayedBindJSDocTypedefTag() { + if (!delayedTypeAliases) { + return; + } + var saveContainer = container; + var saveLastContainer = lastContainer; + var saveBlockScopeContainer = blockScopeContainer; + var saveParent = parent; + var saveCurrentFlow = currentFlow; + for (var _i = 0, delayedTypeAliases_1 = delayedTypeAliases; _i < delayedTypeAliases_1.length; _i++) { + var typeAlias = delayedTypeAliases_1[_i]; + var host = ts.getJSDocHost(typeAlias); + container = ts.findAncestor(host.parent, function (n) { return !!(getContainerFlags(n) & 1 /* IsContainer */); }) || file; + blockScopeContainer = ts.getEnclosingBlockScopeContainer(host) || file; + currentFlow = initFlowNode({ flags: 2 /* Start */ }); + parent = typeAlias; + bind(typeAlias.typeExpression); + var declName = ts.getNameOfDeclaration(typeAlias); + if ((ts.isJSDocEnumTag(typeAlias) || !typeAlias.fullName) && declName && ts.isPropertyAccessEntityNameExpression(declName.parent)) { + // typedef anchored to an A.B.C assignment - we need to bind into B's namespace under name C + var isTopLevel = isTopLevelNamespaceAssignment(declName.parent); + if (isTopLevel) { + bindPotentiallyMissingNamespaces(file.symbol, declName.parent, isTopLevel, !!ts.findAncestor(declName, function (d) { return ts.isPropertyAccessExpression(d) && d.name.escapedText === "prototype"; }), /*containerIsClass*/ false); + var oldContainer = container; + switch (ts.getAssignmentDeclarationPropertyAccessKind(declName.parent)) { + case 1 /* ExportsProperty */: + case 2 /* ModuleExports */: + if (!ts.isExternalOrCommonJsModule(file)) { + container = undefined; + } + else { + container = file; + } + break; + case 4 /* ThisProperty */: + container = declName.parent.expression; + break; + case 3 /* PrototypeProperty */: + container = declName.parent.expression.name; + break; + case 5 /* Property */: + container = isExportsOrModuleExportsOrAlias(file, declName.parent.expression) ? file + : ts.isPropertyAccessExpression(declName.parent.expression) ? declName.parent.expression.name + : declName.parent.expression; + break; + case 0 /* None */: + return ts.Debug.fail("Shouldn't have detected typedef or enum on non-assignment declaration"); + } + if (container) { + declareModuleMember(typeAlias, 524288 /* TypeAlias */, 788968 /* TypeAliasExcludes */); + } + container = oldContainer; + } + } + else if (ts.isJSDocEnumTag(typeAlias) || !typeAlias.fullName || typeAlias.fullName.kind === 75 /* Identifier */) { + parent = typeAlias.parent; + bindBlockScopedDeclaration(typeAlias, 524288 /* TypeAlias */, 788968 /* TypeAliasExcludes */); + } + else { + bind(typeAlias.fullName); + } + } + container = saveContainer; + lastContainer = saveLastContainer; + blockScopeContainer = saveBlockScopeContainer; + parent = saveParent; + currentFlow = saveCurrentFlow; + } + // The binder visits every node in the syntax tree so it is a convenient place to perform a single localized + // check for reserved words used as identifiers in strict mode code. + function checkStrictModeIdentifier(node) { + if (inStrictMode && + node.originalKeywordKind >= 113 /* FirstFutureReservedWord */ && + node.originalKeywordKind <= 121 /* LastFutureReservedWord */ && + !ts.isIdentifierName(node) && + !(node.flags & 8388608 /* Ambient */) && + !(node.flags & 4194304 /* JSDoc */)) { + // Report error only if there are no parse errors in file + if (!file.parseDiagnostics.length) { + file.bindDiagnostics.push(createDiagnosticForNode(node, getStrictModeIdentifierMessage(node), ts.declarationNameToString(node))); + } + } + } + function getStrictModeIdentifierMessage(node) { + // Provide specialized messages to help the user understand why we think they're in + // strict mode. + if (ts.getContainingClass(node)) { + return ts.Diagnostics.Identifier_expected_0_is_a_reserved_word_in_strict_mode_Class_definitions_are_automatically_in_strict_mode; + } + if (file.externalModuleIndicator) { + return ts.Diagnostics.Identifier_expected_0_is_a_reserved_word_in_strict_mode_Modules_are_automatically_in_strict_mode; + } + return ts.Diagnostics.Identifier_expected_0_is_a_reserved_word_in_strict_mode; + } + // The binder visits every node, so this is a good place to check for + // the reserved private name (there is only one) + function checkPrivateIdentifier(node) { + if (node.escapedText === "#constructor") { + // Report error only if there are no parse errors in file + if (!file.parseDiagnostics.length) { + file.bindDiagnostics.push(createDiagnosticForNode(node, ts.Diagnostics.constructor_is_a_reserved_word, ts.declarationNameToString(node))); + } + } + } + function checkStrictModeBinaryExpression(node) { + if (inStrictMode && ts.isLeftHandSideExpression(node.left) && ts.isAssignmentOperator(node.operatorToken.kind)) { + // ECMA 262 (Annex C) The identifier eval or arguments may not appear as the LeftHandSideExpression of an + // Assignment operator(11.13) or of a PostfixExpression(11.3) + checkStrictModeEvalOrArguments(node, node.left); + } + } + function checkStrictModeCatchClause(node) { + // It is a SyntaxError if a TryStatement with a Catch occurs within strict code and the Identifier of the + // Catch production is eval or arguments + if (inStrictMode && node.variableDeclaration) { + checkStrictModeEvalOrArguments(node, node.variableDeclaration.name); + } + } + function checkStrictModeDeleteExpression(node) { + // Grammar checking + if (inStrictMode && node.expression.kind === 75 /* Identifier */) { + // When a delete operator occurs within strict mode code, a SyntaxError is thrown if its + // UnaryExpression is a direct reference to a variable, function argument, or function name + var span = ts.getErrorSpanForNode(file, node.expression); + file.bindDiagnostics.push(ts.createFileDiagnostic(file, span.start, span.length, ts.Diagnostics.delete_cannot_be_called_on_an_identifier_in_strict_mode)); + } + } + function isEvalOrArgumentsIdentifier(node) { + return ts.isIdentifier(node) && (node.escapedText === "eval" || node.escapedText === "arguments"); + } + function checkStrictModeEvalOrArguments(contextNode, name) { + if (name && name.kind === 75 /* Identifier */) { + var identifier = name; + if (isEvalOrArgumentsIdentifier(identifier)) { + // We check first if the name is inside class declaration or class expression; if so give explicit message + // otherwise report generic error message. + var span = ts.getErrorSpanForNode(file, name); + file.bindDiagnostics.push(ts.createFileDiagnostic(file, span.start, span.length, getStrictModeEvalOrArgumentsMessage(contextNode), ts.idText(identifier))); + } + } + } + function getStrictModeEvalOrArgumentsMessage(node) { + // Provide specialized messages to help the user understand why we think they're in + // strict mode. + if (ts.getContainingClass(node)) { + return ts.Diagnostics.Invalid_use_of_0_Class_definitions_are_automatically_in_strict_mode; + } + if (file.externalModuleIndicator) { + return ts.Diagnostics.Invalid_use_of_0_Modules_are_automatically_in_strict_mode; + } + return ts.Diagnostics.Invalid_use_of_0_in_strict_mode; + } + function checkStrictModeFunctionName(node) { + if (inStrictMode) { + // It is a SyntaxError if the identifier eval or arguments appears within a FormalParameterList of a strict mode FunctionDeclaration or FunctionExpression (13.1)) + checkStrictModeEvalOrArguments(node, node.name); + } + } + function getStrictModeBlockScopeFunctionDeclarationMessage(node) { + // Provide specialized messages to help the user understand why we think they're in + // strict mode. + if (ts.getContainingClass(node)) { + return ts.Diagnostics.Function_declarations_are_not_allowed_inside_blocks_in_strict_mode_when_targeting_ES3_or_ES5_Class_definitions_are_automatically_in_strict_mode; + } + if (file.externalModuleIndicator) { + return ts.Diagnostics.Function_declarations_are_not_allowed_inside_blocks_in_strict_mode_when_targeting_ES3_or_ES5_Modules_are_automatically_in_strict_mode; + } + return ts.Diagnostics.Function_declarations_are_not_allowed_inside_blocks_in_strict_mode_when_targeting_ES3_or_ES5; + } + function checkStrictModeFunctionDeclaration(node) { + if (languageVersion < 2 /* ES2015 */) { + // Report error if function is not top level function declaration + if (blockScopeContainer.kind !== 290 /* SourceFile */ && + blockScopeContainer.kind !== 249 /* ModuleDeclaration */ && + !ts.isFunctionLike(blockScopeContainer)) { + // We check first if the name is inside class declaration or class expression; if so give explicit message + // otherwise report generic error message. + var errorSpan = ts.getErrorSpanForNode(file, node); + file.bindDiagnostics.push(ts.createFileDiagnostic(file, errorSpan.start, errorSpan.length, getStrictModeBlockScopeFunctionDeclarationMessage(node))); + } + } + } + function checkStrictModeNumericLiteral(node) { + if (inStrictMode && node.numericLiteralFlags & 32 /* Octal */) { + file.bindDiagnostics.push(createDiagnosticForNode(node, ts.Diagnostics.Octal_literals_are_not_allowed_in_strict_mode)); + } + } + function checkStrictModePostfixUnaryExpression(node) { + // Grammar checking + // The identifier eval or arguments may not appear as the LeftHandSideExpression of an + // Assignment operator(11.13) or of a PostfixExpression(11.3) or as the UnaryExpression + // operated upon by a Prefix Increment(11.4.4) or a Prefix Decrement(11.4.5) operator. + if (inStrictMode) { + checkStrictModeEvalOrArguments(node, node.operand); + } + } + function checkStrictModePrefixUnaryExpression(node) { + // Grammar checking + if (inStrictMode) { + if (node.operator === 45 /* PlusPlusToken */ || node.operator === 46 /* MinusMinusToken */) { + checkStrictModeEvalOrArguments(node, node.operand); + } + } + } + function checkStrictModeWithStatement(node) { + // Grammar checking for withStatement + if (inStrictMode) { + errorOnFirstToken(node, ts.Diagnostics.with_statements_are_not_allowed_in_strict_mode); + } + } + function checkStrictModeLabeledStatement(node) { + // Grammar checking for labeledStatement + if (inStrictMode && options.target >= 2 /* ES2015 */) { + if (ts.isDeclarationStatement(node.statement) || ts.isVariableStatement(node.statement)) { + errorOnFirstToken(node.label, ts.Diagnostics.A_label_is_not_allowed_here); + } + } + } + function errorOnFirstToken(node, message, arg0, arg1, arg2) { + var span = ts.getSpanOfTokenAtPosition(file, node.pos); + file.bindDiagnostics.push(ts.createFileDiagnostic(file, span.start, span.length, message, arg0, arg1, arg2)); + } + function errorOrSuggestionOnNode(isError, node, message) { + errorOrSuggestionOnRange(isError, node, node, message); + } + function errorOrSuggestionOnRange(isError, startNode, endNode, message) { + addErrorOrSuggestionDiagnostic(isError, { pos: ts.getTokenPosOfNode(startNode, file), end: endNode.end }, message); + } + function addErrorOrSuggestionDiagnostic(isError, range, message) { + var diag = ts.createFileDiagnostic(file, range.pos, range.end - range.pos, message); + if (isError) { + file.bindDiagnostics.push(diag); + } + else { + file.bindSuggestionDiagnostics = ts.append(file.bindSuggestionDiagnostics, __assign(__assign({}, diag), { category: ts.DiagnosticCategory.Suggestion })); + } + } + function bind(node) { + if (!node) { + return; + } + node.parent = parent; + var saveInStrictMode = inStrictMode; + // Even though in the AST the jsdoc @typedef node belongs to the current node, + // its symbol might be in the same scope with the current node's symbol. Consider: + // + // /** @typedef {string | number} MyType */ + // function foo(); + // + // Here the current node is "foo", which is a container, but the scope of "MyType" should + // not be inside "foo". Therefore we always bind @typedef before bind the parent node, + // and skip binding this tag later when binding all the other jsdoc tags. + // First we bind declaration nodes to a symbol if possible. We'll both create a symbol + // and then potentially add the symbol to an appropriate symbol table. Possible + // destination symbol tables are: + // + // 1) The 'exports' table of the current container's symbol. + // 2) The 'members' table of the current container's symbol. + // 3) The 'locals' table of the current container. + // + // However, not all symbols will end up in any of these tables. 'Anonymous' symbols + // (like TypeLiterals for example) will not be put in any table. + bindWorker(node); + // Then we recurse into the children of the node to bind them as well. For certain + // symbols we do specialized work when we recurse. For example, we'll keep track of + // the current 'container' node when it changes. This helps us know which symbol table + // a local should go into for example. Since terminal nodes are known not to have + // children, as an optimization we don't process those. + if (node.kind > 152 /* LastToken */) { + var saveParent = parent; + parent = node; + var containerFlags = getContainerFlags(node); + if (containerFlags === 0 /* None */) { + bindChildren(node); + } + else { + bindContainer(node, containerFlags); + } + parent = saveParent; + } + else if (!skipTransformFlagAggregation && (node.transformFlags & 536870912 /* HasComputedFlags */) === 0) { + subtreeTransformFlags |= computeTransformFlagsForNode(node, 0); + var saveParent = parent; + if (node.kind === 1 /* EndOfFileToken */) + parent = node; + bindJSDoc(node); + parent = saveParent; + } + inStrictMode = saveInStrictMode; + } + function bindJSDoc(node) { + if (ts.hasJSDocNodes(node)) { + if (ts.isInJSFile(node)) { + for (var _i = 0, _a = node.jsDoc; _i < _a.length; _i++) { + var j = _a[_i]; + bind(j); + } + } + else { + for (var _b = 0, _c = node.jsDoc; _b < _c.length; _b++) { + var j = _c[_b]; + setParentPointers(node, j); + } + } + } + } + function updateStrictModeStatementList(statements) { + if (!inStrictMode) { + for (var _i = 0, statements_2 = statements; _i < statements_2.length; _i++) { + var statement = statements_2[_i]; + if (!ts.isPrologueDirective(statement)) { + return; + } + if (isUseStrictPrologueDirective(statement)) { + inStrictMode = true; + return; + } + } + } + } + /// Should be called only on prologue directives (isPrologueDirective(node) should be true) + function isUseStrictPrologueDirective(node) { + var nodeText = ts.getSourceTextOfNodeFromSourceFile(file, node.expression); + // Note: the node text must be exactly "use strict" or 'use strict'. It is not ok for the + // string to contain unicode escapes (as per ES5). + return nodeText === '"use strict"' || nodeText === "'use strict'"; + } + function bindWorker(node) { + switch (node.kind) { + /* Strict mode checks */ + case 75 /* Identifier */: + // for typedef type names with namespaces, bind the new jsdoc type symbol here + // because it requires all containing namespaces to be in effect, namely the + // current "blockScopeContainer" needs to be set to its immediate namespace parent. + if (node.isInJSDocNamespace) { + var parentNode = node.parent; + while (parentNode && !ts.isJSDocTypeAlias(parentNode)) { + parentNode = parentNode.parent; + } + bindBlockScopedDeclaration(parentNode, 524288 /* TypeAlias */, 788968 /* TypeAliasExcludes */); + break; + } + // falls through + case 104 /* ThisKeyword */: + if (currentFlow && (ts.isExpression(node) || parent.kind === 282 /* ShorthandPropertyAssignment */)) { + node.flowNode = currentFlow; + } + return checkStrictModeIdentifier(node); + case 76 /* PrivateIdentifier */: + return checkPrivateIdentifier(node); + case 194 /* PropertyAccessExpression */: + case 195 /* ElementAccessExpression */: + var expr = node; + if (currentFlow && isNarrowableReference(expr)) { + expr.flowNode = currentFlow; + } + if (ts.isSpecialPropertyDeclaration(expr)) { + bindSpecialPropertyDeclaration(expr); + } + if (ts.isInJSFile(expr) && + file.commonJsModuleIndicator && + ts.isModuleExportsAccessExpression(expr) && + !lookupSymbolForNameWorker(blockScopeContainer, "module")) { + declareSymbol(file.locals, /*parent*/ undefined, expr.expression, 1 /* FunctionScopedVariable */ | 134217728 /* ModuleExports */, 111550 /* FunctionScopedVariableExcludes */); + } + break; + case 209 /* BinaryExpression */: + var specialKind = ts.getAssignmentDeclarationKind(node); + switch (specialKind) { + case 1 /* ExportsProperty */: + bindExportsPropertyAssignment(node); + break; + case 2 /* ModuleExports */: + bindModuleExportsAssignment(node); + break; + case 3 /* PrototypeProperty */: + bindPrototypePropertyAssignment(node.left, node); + break; + case 6 /* Prototype */: + bindPrototypeAssignment(node); + break; + case 4 /* ThisProperty */: + bindThisPropertyAssignment(node); + break; + case 5 /* Property */: + bindSpecialPropertyAssignment(node); + break; + case 0 /* None */: + // Nothing to do + break; + default: + ts.Debug.fail("Unknown binary expression special property assignment kind"); + } + return checkStrictModeBinaryExpression(node); + case 280 /* CatchClause */: + return checkStrictModeCatchClause(node); + case 203 /* DeleteExpression */: + return checkStrictModeDeleteExpression(node); + case 8 /* NumericLiteral */: + return checkStrictModeNumericLiteral(node); + case 208 /* PostfixUnaryExpression */: + return checkStrictModePostfixUnaryExpression(node); + case 207 /* PrefixUnaryExpression */: + return checkStrictModePrefixUnaryExpression(node); + case 236 /* WithStatement */: + return checkStrictModeWithStatement(node); + case 238 /* LabeledStatement */: + return checkStrictModeLabeledStatement(node); + case 183 /* ThisType */: + seenThisKeyword = true; + return; + case 168 /* TypePredicate */: + break; // Binding the children will handle everything + case 155 /* TypeParameter */: + return bindTypeParameter(node); + case 156 /* Parameter */: + return bindParameter(node); + case 242 /* VariableDeclaration */: + return bindVariableDeclarationOrBindingElement(node); + case 191 /* BindingElement */: + node.flowNode = currentFlow; + return bindVariableDeclarationOrBindingElement(node); + case 159 /* PropertyDeclaration */: + case 158 /* PropertySignature */: + return bindPropertyWorker(node); + case 281 /* PropertyAssignment */: + case 282 /* ShorthandPropertyAssignment */: + return bindPropertyOrMethodOrAccessor(node, 4 /* Property */, 0 /* PropertyExcludes */); + case 284 /* EnumMember */: + return bindPropertyOrMethodOrAccessor(node, 8 /* EnumMember */, 900095 /* EnumMemberExcludes */); + case 165 /* CallSignature */: + case 166 /* ConstructSignature */: + case 167 /* IndexSignature */: + return declareSymbolAndAddToSymbolTable(node, 131072 /* Signature */, 0 /* None */); + case 161 /* MethodDeclaration */: + case 160 /* MethodSignature */: + // If this is an ObjectLiteralExpression method, then it sits in the same space + // as other properties in the object literal. So we use SymbolFlags.PropertyExcludes + // so that it will conflict with any other object literal members with the same + // name. + return bindPropertyOrMethodOrAccessor(node, 8192 /* Method */ | (node.questionToken ? 16777216 /* Optional */ : 0 /* None */), ts.isObjectLiteralMethod(node) ? 0 /* PropertyExcludes */ : 103359 /* MethodExcludes */); + case 244 /* FunctionDeclaration */: + return bindFunctionDeclaration(node); + case 162 /* Constructor */: + return declareSymbolAndAddToSymbolTable(node, 16384 /* Constructor */, /*symbolExcludes:*/ 0 /* None */); + case 163 /* GetAccessor */: + return bindPropertyOrMethodOrAccessor(node, 32768 /* GetAccessor */, 46015 /* GetAccessorExcludes */); + case 164 /* SetAccessor */: + return bindPropertyOrMethodOrAccessor(node, 65536 /* SetAccessor */, 78783 /* SetAccessorExcludes */); + case 170 /* FunctionType */: + case 300 /* JSDocFunctionType */: + case 305 /* JSDocSignature */: + case 171 /* ConstructorType */: + return bindFunctionOrConstructorType(node); + case 173 /* TypeLiteral */: + case 304 /* JSDocTypeLiteral */: + case 186 /* MappedType */: + return bindAnonymousTypeWorker(node); + case 310 /* JSDocClassTag */: + return bindJSDocClassTag(node); + case 193 /* ObjectLiteralExpression */: + return bindObjectLiteralExpression(node); + case 201 /* FunctionExpression */: + case 202 /* ArrowFunction */: + return bindFunctionExpression(node); + case 196 /* CallExpression */: + var assignmentKind = ts.getAssignmentDeclarationKind(node); + switch (assignmentKind) { + case 7 /* ObjectDefinePropertyValue */: + return bindObjectDefinePropertyAssignment(node); + case 8 /* ObjectDefinePropertyExports */: + return bindObjectDefinePropertyExport(node); + case 9 /* ObjectDefinePrototypeProperty */: + return bindObjectDefinePrototypeProperty(node); + case 0 /* None */: + break; // Nothing to do + default: + return ts.Debug.fail("Unknown call expression assignment declaration kind"); + } + if (ts.isInJSFile(node)) { + bindCallExpression(node); + } + break; + // Members of classes, interfaces, and modules + case 214 /* ClassExpression */: + case 245 /* ClassDeclaration */: + // All classes are automatically in strict mode in ES6. + inStrictMode = true; + return bindClassLikeDeclaration(node); + case 246 /* InterfaceDeclaration */: + return bindBlockScopedDeclaration(node, 64 /* Interface */, 788872 /* InterfaceExcludes */); + case 247 /* TypeAliasDeclaration */: + return bindBlockScopedDeclaration(node, 524288 /* TypeAlias */, 788968 /* TypeAliasExcludes */); + case 248 /* EnumDeclaration */: + return bindEnumDeclaration(node); + case 249 /* ModuleDeclaration */: + return bindModuleDeclaration(node); + // Jsx-attributes + case 274 /* JsxAttributes */: + return bindJsxAttributes(node); + case 273 /* JsxAttribute */: + return bindJsxAttribute(node, 4 /* Property */, 0 /* PropertyExcludes */); + // Imports and exports + case 253 /* ImportEqualsDeclaration */: + case 256 /* NamespaceImport */: + case 258 /* ImportSpecifier */: + case 263 /* ExportSpecifier */: + return declareSymbolAndAddToSymbolTable(node, 2097152 /* Alias */, 2097152 /* AliasExcludes */); + case 252 /* NamespaceExportDeclaration */: + return bindNamespaceExportDeclaration(node); + case 255 /* ImportClause */: + return bindImportClause(node); + case 260 /* ExportDeclaration */: + return bindExportDeclaration(node); + case 259 /* ExportAssignment */: + return bindExportAssignment(node); + case 290 /* SourceFile */: + updateStrictModeStatementList(node.statements); + return bindSourceFileIfExternalModule(); + case 223 /* Block */: + if (!ts.isFunctionLike(node.parent)) { + return; + } + // falls through + case 250 /* ModuleBlock */: + return updateStrictModeStatementList(node.statements); + case 317 /* JSDocParameterTag */: + if (node.parent.kind === 305 /* JSDocSignature */) { + return bindParameter(node); + } + if (node.parent.kind !== 304 /* JSDocTypeLiteral */) { + break; + } + // falls through + case 323 /* JSDocPropertyTag */: + var propTag = node; + var flags = propTag.isBracketed || propTag.typeExpression && propTag.typeExpression.type.kind === 299 /* JSDocOptionalType */ ? + 4 /* Property */ | 16777216 /* Optional */ : + 4 /* Property */; + return declareSymbolAndAddToSymbolTable(propTag, flags, 0 /* PropertyExcludes */); + case 322 /* JSDocTypedefTag */: + case 315 /* JSDocCallbackTag */: + case 316 /* JSDocEnumTag */: + return (delayedTypeAliases || (delayedTypeAliases = [])).push(node); + } + } + function bindPropertyWorker(node) { + return bindPropertyOrMethodOrAccessor(node, 4 /* Property */ | (node.questionToken ? 16777216 /* Optional */ : 0 /* None */), 0 /* PropertyExcludes */); + } + function bindAnonymousTypeWorker(node) { + return bindAnonymousDeclaration(node, 2048 /* TypeLiteral */, "__type" /* Type */); + } + function bindSourceFileIfExternalModule() { + setExportContextFlag(file); + if (ts.isExternalModule(file)) { + bindSourceFileAsExternalModule(); + } + else if (ts.isJsonSourceFile(file)) { + bindSourceFileAsExternalModule(); + // Create symbol equivalent for the module.exports = {} + var originalSymbol = file.symbol; + declareSymbol(file.symbol.exports, file.symbol, file, 4 /* Property */, 67108863 /* All */); + file.symbol = originalSymbol; + } + } + function bindSourceFileAsExternalModule() { + bindAnonymousDeclaration(file, 512 /* ValueModule */, "\"" + ts.removeFileExtension(file.fileName) + "\""); + } + function bindExportAssignment(node) { + if (!container.symbol || !container.symbol.exports) { + // Export assignment in some sort of block construct + bindAnonymousDeclaration(node, 2097152 /* Alias */, getDeclarationName(node)); + } + else { + var flags = ts.exportAssignmentIsAlias(node) + // An export default clause with an EntityNameExpression or a class expression exports all meanings of that identifier or expression; + ? 2097152 /* Alias */ + // An export default clause with any other expression exports a value + : 4 /* Property */; + // If there is an `export default x;` alias declaration, can't `export default` anything else. + // (In contrast, you can still have `export default function f() {}` and `export default interface I {}`.) + var symbol = declareSymbol(container.symbol.exports, container.symbol, node, flags, 67108863 /* All */); + if (node.isExportEquals) { + // Will be an error later, since the module already has other exports. Just make sure this has a valueDeclaration set. + ts.setValueDeclaration(symbol, node); + } + } + } + function bindNamespaceExportDeclaration(node) { + if (node.modifiers && node.modifiers.length) { + file.bindDiagnostics.push(createDiagnosticForNode(node, ts.Diagnostics.Modifiers_cannot_appear_here)); + } + var diag = !ts.isSourceFile(node.parent) ? ts.Diagnostics.Global_module_exports_may_only_appear_at_top_level + : !ts.isExternalModule(node.parent) ? ts.Diagnostics.Global_module_exports_may_only_appear_in_module_files + : !node.parent.isDeclarationFile ? ts.Diagnostics.Global_module_exports_may_only_appear_in_declaration_files + : undefined; + if (diag) { + file.bindDiagnostics.push(createDiagnosticForNode(node, diag)); + } + else { + file.symbol.globalExports = file.symbol.globalExports || ts.createSymbolTable(); + declareSymbol(file.symbol.globalExports, file.symbol, node, 2097152 /* Alias */, 2097152 /* AliasExcludes */); + } + } + function bindExportDeclaration(node) { + if (!container.symbol || !container.symbol.exports) { + // Export * in some sort of block construct + bindAnonymousDeclaration(node, 8388608 /* ExportStar */, getDeclarationName(node)); + } + else if (!node.exportClause) { + // All export * declarations are collected in an __export symbol + declareSymbol(container.symbol.exports, container.symbol, node, 8388608 /* ExportStar */, 0 /* None */); + } + else if (ts.isNamespaceExport(node.exportClause)) { + // declareSymbol walks up parents to find name text, parent _must_ be set + // but won't be set by the normal binder walk until `bindChildren` later on. + node.exportClause.parent = node; + declareSymbol(container.symbol.exports, container.symbol, node.exportClause, 2097152 /* Alias */, 2097152 /* AliasExcludes */); + } + } + function bindImportClause(node) { + if (node.name) { + declareSymbolAndAddToSymbolTable(node, 2097152 /* Alias */, 2097152 /* AliasExcludes */); + } + } + function setCommonJsModuleIndicator(node) { + if (file.externalModuleIndicator) { + return false; + } + if (!file.commonJsModuleIndicator) { + file.commonJsModuleIndicator = node; + bindSourceFileAsExternalModule(); + } + return true; + } + function bindObjectDefinePropertyExport(node) { + if (!setCommonJsModuleIndicator(node)) { + return; + } + var symbol = forEachIdentifierInEntityName(node.arguments[0], /*parent*/ undefined, function (id, symbol) { + if (symbol) { + addDeclarationToSymbol(symbol, id, 1536 /* Module */ | 67108864 /* Assignment */); + } + return symbol; + }); + if (symbol) { + var flags = 4 /* Property */ | 1048576 /* ExportValue */; + declareSymbol(symbol.exports, symbol, node, flags, 0 /* None */); + } + } + function bindExportsPropertyAssignment(node) { + // When we create a property via 'exports.foo = bar', the 'exports.foo' property access + // expression is the declaration + if (!setCommonJsModuleIndicator(node)) { + return; + } + var symbol = forEachIdentifierInEntityName(node.left.expression, /*parent*/ undefined, function (id, symbol) { + if (symbol) { + addDeclarationToSymbol(symbol, id, 1536 /* Module */ | 67108864 /* Assignment */); + } + return symbol; + }); + if (symbol) { + var flags = ts.isClassExpression(node.right) ? + 4 /* Property */ | 1048576 /* ExportValue */ | 32 /* Class */ : + 4 /* Property */ | 1048576 /* ExportValue */; + declareSymbol(symbol.exports, symbol, node.left, flags, 0 /* None */); + } + } + function bindModuleExportsAssignment(node) { + // A common practice in node modules is to set 'export = module.exports = {}', this ensures that 'exports' + // is still pointing to 'module.exports'. + // We do not want to consider this as 'export=' since a module can have only one of these. + // Similarly we do not want to treat 'module.exports = exports' as an 'export='. + if (!setCommonJsModuleIndicator(node)) { + return; + } + var assignedExpression = ts.getRightMostAssignedExpression(node.right); + if (ts.isEmptyObjectLiteral(assignedExpression) || container === file && isExportsOrModuleExportsOrAlias(file, assignedExpression)) { + return; + } + // 'module.exports = expr' assignment + var flags = ts.exportAssignmentIsAlias(node) + ? 2097152 /* Alias */ + : 4 /* Property */ | 1048576 /* ExportValue */ | 512 /* ValueModule */; + var symbol = declareSymbol(file.symbol.exports, file.symbol, node, flags | 67108864 /* Assignment */, 0 /* None */); + ts.setValueDeclaration(symbol, node); + } + function bindThisPropertyAssignment(node) { + ts.Debug.assert(ts.isInJSFile(node)); + // private identifiers *must* be declared (even in JS files) + var hasPrivateIdentifier = (ts.isBinaryExpression(node) && ts.isPropertyAccessExpression(node.left) && ts.isPrivateIdentifier(node.left.name)) + || (ts.isPropertyAccessExpression(node) && ts.isPrivateIdentifier(node.name)); + if (hasPrivateIdentifier) { + return; + } + var thisContainer = ts.getThisContainer(node, /*includeArrowFunctions*/ false); + switch (thisContainer.kind) { + case 244 /* FunctionDeclaration */: + case 201 /* FunctionExpression */: + var constructorSymbol = thisContainer.symbol; + // For `f.prototype.m = function() { this.x = 0; }`, `this.x = 0` should modify `f`'s members, not the function expression. + if (ts.isBinaryExpression(thisContainer.parent) && thisContainer.parent.operatorToken.kind === 62 /* EqualsToken */) { + var l = thisContainer.parent.left; + if (ts.isBindableStaticAccessExpression(l) && ts.isPrototypeAccess(l.expression)) { + constructorSymbol = lookupSymbolForPropertyAccess(l.expression.expression, thisParentContainer); + } + } + if (constructorSymbol && constructorSymbol.valueDeclaration) { + // Declare a 'member' if the container is an ES5 class or ES6 constructor + constructorSymbol.members = constructorSymbol.members || ts.createSymbolTable(); + // It's acceptable for multiple 'this' assignments of the same identifier to occur + if (ts.hasDynamicName(node)) { + bindDynamicallyNamedThisPropertyAssignment(node, constructorSymbol); + } + else { + declareSymbol(constructorSymbol.members, constructorSymbol, node, 4 /* Property */ | 67108864 /* Assignment */, 0 /* PropertyExcludes */ & ~4 /* Property */); + } + addDeclarationToSymbol(constructorSymbol, constructorSymbol.valueDeclaration, 32 /* Class */); + } + break; + case 162 /* Constructor */: + case 159 /* PropertyDeclaration */: + case 161 /* MethodDeclaration */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + // this.foo assignment in a JavaScript class + // Bind this property to the containing class + var containingClass = thisContainer.parent; + var symbolTable = ts.hasModifier(thisContainer, 32 /* Static */) ? containingClass.symbol.exports : containingClass.symbol.members; + if (ts.hasDynamicName(node)) { + bindDynamicallyNamedThisPropertyAssignment(node, containingClass.symbol); + } + else { + declareSymbol(symbolTable, containingClass.symbol, node, 4 /* Property */ | 67108864 /* Assignment */, 0 /* None */, /*isReplaceableByMethod*/ true); + } + break; + case 290 /* SourceFile */: + // this.property = assignment in a source file -- declare symbol in exports for a module, in locals for a script + if (ts.hasDynamicName(node)) { + break; + } + else if (thisContainer.commonJsModuleIndicator) { + declareSymbol(thisContainer.symbol.exports, thisContainer.symbol, node, 4 /* Property */ | 1048576 /* ExportValue */, 0 /* None */); + } + else { + declareSymbolAndAddToSymbolTable(node, 1 /* FunctionScopedVariable */, 111550 /* FunctionScopedVariableExcludes */); + } + break; + default: + ts.Debug.failBadSyntaxKind(thisContainer); + } + } + function bindDynamicallyNamedThisPropertyAssignment(node, symbol) { + bindAnonymousDeclaration(node, 4 /* Property */, "__computed" /* Computed */); + addLateBoundAssignmentDeclarationToSymbol(node, symbol); + } + function addLateBoundAssignmentDeclarationToSymbol(node, symbol) { + if (symbol) { + var members = symbol.assignmentDeclarationMembers || (symbol.assignmentDeclarationMembers = ts.createMap()); + members.set("" + ts.getNodeId(node), node); + } + } + function bindSpecialPropertyDeclaration(node) { + if (node.expression.kind === 104 /* ThisKeyword */) { + bindThisPropertyAssignment(node); + } + else if (ts.isBindableStaticAccessExpression(node) && node.parent.parent.kind === 290 /* SourceFile */) { + if (ts.isPrototypeAccess(node.expression)) { + bindPrototypePropertyAssignment(node, node.parent); + } + else { + bindStaticPropertyAssignment(node); + } + } + } + /** For `x.prototype = { p, ... }`, declare members p,... if `x` is function/class/{}, or not declared. */ + function bindPrototypeAssignment(node) { + node.left.parent = node; + node.right.parent = node; + bindPropertyAssignment(node.left.expression, node.left, /*isPrototypeProperty*/ false, /*containerIsClass*/ true); + } + function bindObjectDefinePrototypeProperty(node) { + var namespaceSymbol = lookupSymbolForPropertyAccess(node.arguments[0].expression); + if (namespaceSymbol && namespaceSymbol.valueDeclaration) { + // Ensure the namespace symbol becomes class-like + addDeclarationToSymbol(namespaceSymbol, namespaceSymbol.valueDeclaration, 32 /* Class */); + } + bindPotentiallyNewExpandoMemberToNamespace(node, namespaceSymbol, /*isPrototypeProperty*/ true); + } + /** + * For `x.prototype.y = z`, declare a member `y` on `x` if `x` is a function or class, or not declared. + * Note that jsdoc preceding an ExpressionStatement like `x.prototype.y;` is also treated as a declaration. + */ + function bindPrototypePropertyAssignment(lhs, parent) { + // Look up the function in the local scope, since prototype assignments should + // follow the function declaration + var classPrototype = lhs.expression; + var constructorFunction = classPrototype.expression; + // Fix up parent pointers since we're going to use these nodes before we bind into them + lhs.parent = parent; + constructorFunction.parent = classPrototype; + classPrototype.parent = lhs; + bindPropertyAssignment(constructorFunction, lhs, /*isPrototypeProperty*/ true, /*containerIsClass*/ true); + } + function bindObjectDefinePropertyAssignment(node) { + var namespaceSymbol = lookupSymbolForPropertyAccess(node.arguments[0]); + var isToplevel = node.parent.parent.kind === 290 /* SourceFile */; + namespaceSymbol = bindPotentiallyMissingNamespaces(namespaceSymbol, node.arguments[0], isToplevel, /*isPrototypeProperty*/ false, /*containerIsClass*/ false); + bindPotentiallyNewExpandoMemberToNamespace(node, namespaceSymbol, /*isPrototypeProperty*/ false); + } + function bindSpecialPropertyAssignment(node) { + // Class declarations in Typescript do not allow property declarations + var parentSymbol = lookupSymbolForPropertyAccess(node.left.expression); + if (!ts.isInJSFile(node) && !ts.isFunctionSymbol(parentSymbol)) { + return; + } + // Fix up parent pointers since we're going to use these nodes before we bind into them + node.left.parent = node; + node.right.parent = node; + if (ts.isIdentifier(node.left.expression) && container === file && isExportsOrModuleExportsOrAlias(file, node.left.expression)) { + // This can be an alias for the 'exports' or 'module.exports' names, e.g. + // var util = module.exports; + // util.property = function ... + bindExportsPropertyAssignment(node); + } + else if (ts.hasDynamicName(node)) { + bindAnonymousDeclaration(node, 4 /* Property */ | 67108864 /* Assignment */, "__computed" /* Computed */); + var sym = bindPotentiallyMissingNamespaces(parentSymbol, node.left.expression, isTopLevelNamespaceAssignment(node.left), /*isPrototype*/ false, /*containerIsClass*/ false); + addLateBoundAssignmentDeclarationToSymbol(node, sym); + } + else { + bindStaticPropertyAssignment(ts.cast(node.left, ts.isBindableStaticNameExpression)); + } + } + /** + * For nodes like `x.y = z`, declare a member 'y' on 'x' if x is a function (or IIFE) or class or {}, or not declared. + * Also works for expression statements preceded by JSDoc, like / ** @type number * / x.y; + */ + function bindStaticPropertyAssignment(node) { + ts.Debug.assert(!ts.isIdentifier(node)); + node.expression.parent = node; + bindPropertyAssignment(node.expression, node, /*isPrototypeProperty*/ false, /*containerIsClass*/ false); + } + function bindPotentiallyMissingNamespaces(namespaceSymbol, entityName, isToplevel, isPrototypeProperty, containerIsClass) { + if (isToplevel && !isPrototypeProperty) { + // make symbols or add declarations for intermediate containers + var flags_1 = 1536 /* Module */ | 67108864 /* Assignment */; + var excludeFlags_1 = 110735 /* ValueModuleExcludes */ & ~67108864 /* Assignment */; + namespaceSymbol = forEachIdentifierInEntityName(entityName, namespaceSymbol, function (id, symbol, parent) { + if (symbol) { + addDeclarationToSymbol(symbol, id, flags_1); + return symbol; + } + else { + var table = parent ? parent.exports : + file.jsGlobalAugmentations || (file.jsGlobalAugmentations = ts.createSymbolTable()); + return declareSymbol(table, parent, id, flags_1, excludeFlags_1); + } + }); + } + if (containerIsClass && namespaceSymbol && namespaceSymbol.valueDeclaration) { + addDeclarationToSymbol(namespaceSymbol, namespaceSymbol.valueDeclaration, 32 /* Class */); + } + return namespaceSymbol; + } + function bindPotentiallyNewExpandoMemberToNamespace(declaration, namespaceSymbol, isPrototypeProperty) { + if (!namespaceSymbol || !isExpandoSymbol(namespaceSymbol)) { + return; + } + // Set up the members collection if it doesn't exist already + var symbolTable = isPrototypeProperty ? + (namespaceSymbol.members || (namespaceSymbol.members = ts.createSymbolTable())) : + (namespaceSymbol.exports || (namespaceSymbol.exports = ts.createSymbolTable())); + var includes = 0 /* None */; + var excludes = 0 /* None */; + // Method-like + if (ts.isFunctionLikeDeclaration(ts.getAssignedExpandoInitializer(declaration))) { + includes = 8192 /* Method */; + excludes = 103359 /* MethodExcludes */; + } + // Maybe accessor-like + else if (ts.isCallExpression(declaration) && ts.isBindableObjectDefinePropertyCall(declaration)) { + if (ts.some(declaration.arguments[2].properties, function (p) { + var id = ts.getNameOfDeclaration(p); + return !!id && ts.isIdentifier(id) && ts.idText(id) === "set"; + })) { + // We mix in `SymbolFLags.Property` so in the checker `getTypeOfVariableParameterOrProperty` is used for this + // symbol, instead of `getTypeOfAccessor` (which will assert as there is no real accessor declaration) + includes |= 65536 /* SetAccessor */ | 4 /* Property */; + excludes |= 78783 /* SetAccessorExcludes */; + } + if (ts.some(declaration.arguments[2].properties, function (p) { + var id = ts.getNameOfDeclaration(p); + return !!id && ts.isIdentifier(id) && ts.idText(id) === "get"; + })) { + includes |= 32768 /* GetAccessor */ | 4 /* Property */; + excludes |= 46015 /* GetAccessorExcludes */; + } + } + if (includes === 0 /* None */) { + includes = 4 /* Property */; + excludes = 0 /* PropertyExcludes */; + } + declareSymbol(symbolTable, namespaceSymbol, declaration, includes | 67108864 /* Assignment */, excludes & ~67108864 /* Assignment */); + } + function isTopLevelNamespaceAssignment(propertyAccess) { + return ts.isBinaryExpression(propertyAccess.parent) + ? getParentOfBinaryExpression(propertyAccess.parent).parent.kind === 290 /* SourceFile */ + : propertyAccess.parent.parent.kind === 290 /* SourceFile */; + } + function bindPropertyAssignment(name, propertyAccess, isPrototypeProperty, containerIsClass) { + var namespaceSymbol = lookupSymbolForPropertyAccess(name); + var isToplevel = isTopLevelNamespaceAssignment(propertyAccess); + namespaceSymbol = bindPotentiallyMissingNamespaces(namespaceSymbol, propertyAccess.expression, isToplevel, isPrototypeProperty, containerIsClass); + bindPotentiallyNewExpandoMemberToNamespace(propertyAccess, namespaceSymbol, isPrototypeProperty); + } + /** + * Javascript expando values are: + * - Functions + * - classes + * - namespaces + * - variables initialized with function expressions + * - with class expressions + * - with empty object literals + * - with non-empty object literals if assigned to the prototype property + */ + function isExpandoSymbol(symbol) { + if (symbol.flags & (16 /* Function */ | 32 /* Class */ | 1024 /* NamespaceModule */)) { + return true; + } + var node = symbol.valueDeclaration; + if (node && ts.isCallExpression(node)) { + return !!ts.getAssignedExpandoInitializer(node); + } + var init = !node ? undefined : + ts.isVariableDeclaration(node) ? node.initializer : + ts.isBinaryExpression(node) ? node.right : + ts.isPropertyAccessExpression(node) && ts.isBinaryExpression(node.parent) ? node.parent.right : + undefined; + init = init && ts.getRightMostAssignedExpression(init); + if (init) { + var isPrototypeAssignment = ts.isPrototypeAccess(ts.isVariableDeclaration(node) ? node.name : ts.isBinaryExpression(node) ? node.left : node); + return !!ts.getExpandoInitializer(ts.isBinaryExpression(init) && (init.operatorToken.kind === 56 /* BarBarToken */ || init.operatorToken.kind === 60 /* QuestionQuestionToken */) ? init.right : init, isPrototypeAssignment); + } + return false; + } + function getParentOfBinaryExpression(expr) { + while (ts.isBinaryExpression(expr.parent)) { + expr = expr.parent; + } + return expr.parent; + } + function lookupSymbolForPropertyAccess(node, lookupContainer) { + if (lookupContainer === void 0) { lookupContainer = container; } + if (ts.isIdentifier(node)) { + return lookupSymbolForNameWorker(lookupContainer, node.escapedText); + } + else { + var symbol = lookupSymbolForPropertyAccess(node.expression); + return symbol && symbol.exports && symbol.exports.get(ts.getElementOrPropertyAccessName(node)); + } + } + function forEachIdentifierInEntityName(e, parent, action) { + if (isExportsOrModuleExportsOrAlias(file, e)) { + return file.symbol; + } + else if (ts.isIdentifier(e)) { + return action(e, lookupSymbolForPropertyAccess(e), parent); + } + else { + var s = forEachIdentifierInEntityName(e.expression, parent, action); + var name = ts.getNameOrArgument(e); + // unreachable + if (ts.isPrivateIdentifier(name)) { + ts.Debug.fail("unexpected PrivateIdentifier"); + } + return action(name, s && s.exports && s.exports.get(ts.getElementOrPropertyAccessName(e)), s); + } + } + function bindCallExpression(node) { + // We're only inspecting call expressions to detect CommonJS modules, so we can skip + // this check if we've already seen the module indicator + if (!file.commonJsModuleIndicator && ts.isRequireCall(node, /*checkArgumentIsStringLiteralLike*/ false)) { + setCommonJsModuleIndicator(node); + } + } + function bindClassLikeDeclaration(node) { + if (node.kind === 245 /* ClassDeclaration */) { + bindBlockScopedDeclaration(node, 32 /* Class */, 899503 /* ClassExcludes */); + } + else { + var bindingName = node.name ? node.name.escapedText : "__class" /* Class */; + bindAnonymousDeclaration(node, 32 /* Class */, bindingName); + // Add name of class expression into the map for semantic classifier + if (node.name) { + classifiableNames.set(node.name.escapedText, true); + } + } + var symbol = node.symbol; + // TypeScript 1.0 spec (April 2014): 8.4 + // Every class automatically contains a static property member named 'prototype', the + // type of which is an instantiation of the class type with type Any supplied as a type + // argument for each type parameter. It is an error to explicitly declare a static + // property member with the name 'prototype'. + // + // Note: we check for this here because this class may be merging into a module. The + // module might have an exported variable called 'prototype'. We can't allow that as + // that would clash with the built-in 'prototype' for the class. + var prototypeSymbol = createSymbol(4 /* Property */ | 4194304 /* Prototype */, "prototype"); + var symbolExport = symbol.exports.get(prototypeSymbol.escapedName); + if (symbolExport) { + if (node.name) { + node.name.parent = node; + } + file.bindDiagnostics.push(createDiagnosticForNode(symbolExport.declarations[0], ts.Diagnostics.Duplicate_identifier_0, ts.symbolName(prototypeSymbol))); + } + symbol.exports.set(prototypeSymbol.escapedName, prototypeSymbol); + prototypeSymbol.parent = symbol; + } + function bindEnumDeclaration(node) { + return ts.isEnumConst(node) + ? bindBlockScopedDeclaration(node, 128 /* ConstEnum */, 899967 /* ConstEnumExcludes */) + : bindBlockScopedDeclaration(node, 256 /* RegularEnum */, 899327 /* RegularEnumExcludes */); + } + function bindVariableDeclarationOrBindingElement(node) { + if (inStrictMode) { + checkStrictModeEvalOrArguments(node, node.name); + } + if (!ts.isBindingPattern(node.name)) { + if (ts.isBlockOrCatchScoped(node)) { + bindBlockScopedDeclaration(node, 2 /* BlockScopedVariable */, 111551 /* BlockScopedVariableExcludes */); + } + else if (ts.isParameterDeclaration(node)) { + // It is safe to walk up parent chain to find whether the node is a destructuring parameter declaration + // because its parent chain has already been set up, since parents are set before descending into children. + // + // If node is a binding element in parameter declaration, we need to use ParameterExcludes. + // Using ParameterExcludes flag allows the compiler to report an error on duplicate identifiers in Parameter Declaration + // For example: + // function foo([a,a]) {} // Duplicate Identifier error + // function bar(a,a) {} // Duplicate Identifier error, parameter declaration in this case is handled in bindParameter + // // which correctly set excluded symbols + declareSymbolAndAddToSymbolTable(node, 1 /* FunctionScopedVariable */, 111551 /* ParameterExcludes */); + } + else { + declareSymbolAndAddToSymbolTable(node, 1 /* FunctionScopedVariable */, 111550 /* FunctionScopedVariableExcludes */); + } + } + } + function bindParameter(node) { + if (node.kind === 317 /* JSDocParameterTag */ && container.kind !== 305 /* JSDocSignature */) { + return; + } + if (inStrictMode && !(node.flags & 8388608 /* Ambient */)) { + // It is a SyntaxError if the identifier eval or arguments appears within a FormalParameterList of a + // strict mode FunctionLikeDeclaration or FunctionExpression(13.1) + checkStrictModeEvalOrArguments(node, node.name); + } + if (ts.isBindingPattern(node.name)) { + bindAnonymousDeclaration(node, 1 /* FunctionScopedVariable */, "__" + node.parent.parameters.indexOf(node)); + } + else { + declareSymbolAndAddToSymbolTable(node, 1 /* FunctionScopedVariable */, 111551 /* ParameterExcludes */); + } + // If this is a property-parameter, then also declare the property symbol into the + // containing class. + if (ts.isParameterPropertyDeclaration(node, node.parent)) { + var classDeclaration = node.parent.parent; + declareSymbol(classDeclaration.symbol.members, classDeclaration.symbol, node, 4 /* Property */ | (node.questionToken ? 16777216 /* Optional */ : 0 /* None */), 0 /* PropertyExcludes */); + } + } + function bindFunctionDeclaration(node) { + if (!file.isDeclarationFile && !(node.flags & 8388608 /* Ambient */)) { + if (ts.isAsyncFunction(node)) { + emitFlags |= 2048 /* HasAsyncFunctions */; + } + } + checkStrictModeFunctionName(node); + if (inStrictMode) { + checkStrictModeFunctionDeclaration(node); + bindBlockScopedDeclaration(node, 16 /* Function */, 110991 /* FunctionExcludes */); + } + else { + declareSymbolAndAddToSymbolTable(node, 16 /* Function */, 110991 /* FunctionExcludes */); + } + } + function bindFunctionExpression(node) { + if (!file.isDeclarationFile && !(node.flags & 8388608 /* Ambient */)) { + if (ts.isAsyncFunction(node)) { + emitFlags |= 2048 /* HasAsyncFunctions */; + } + } + if (currentFlow) { + node.flowNode = currentFlow; + } + checkStrictModeFunctionName(node); + var bindingName = node.name ? node.name.escapedText : "__function" /* Function */; + return bindAnonymousDeclaration(node, 16 /* Function */, bindingName); + } + function bindPropertyOrMethodOrAccessor(node, symbolFlags, symbolExcludes) { + if (!file.isDeclarationFile && !(node.flags & 8388608 /* Ambient */) && ts.isAsyncFunction(node)) { + emitFlags |= 2048 /* HasAsyncFunctions */; + } + if (currentFlow && ts.isObjectLiteralOrClassExpressionMethod(node)) { + node.flowNode = currentFlow; + } + return ts.hasDynamicName(node) + ? bindAnonymousDeclaration(node, symbolFlags, "__computed" /* Computed */) + : declareSymbolAndAddToSymbolTable(node, symbolFlags, symbolExcludes); + } + function getInferTypeContainer(node) { + var extendsType = ts.findAncestor(node, function (n) { return n.parent && ts.isConditionalTypeNode(n.parent) && n.parent.extendsType === n; }); + return extendsType && extendsType.parent; + } + function bindTypeParameter(node) { + if (ts.isJSDocTemplateTag(node.parent)) { + var container_1 = ts.find(node.parent.parent.tags, ts.isJSDocTypeAlias) || ts.getHostSignatureFromJSDoc(node.parent); // TODO: GH#18217 + if (container_1) { + if (!container_1.locals) { + container_1.locals = ts.createSymbolTable(); + } + declareSymbol(container_1.locals, /*parent*/ undefined, node, 262144 /* TypeParameter */, 526824 /* TypeParameterExcludes */); + } + else { + declareSymbolAndAddToSymbolTable(node, 262144 /* TypeParameter */, 526824 /* TypeParameterExcludes */); + } + } + else if (node.parent.kind === 181 /* InferType */) { + var container_2 = getInferTypeContainer(node.parent); + if (container_2) { + if (!container_2.locals) { + container_2.locals = ts.createSymbolTable(); + } + declareSymbol(container_2.locals, /*parent*/ undefined, node, 262144 /* TypeParameter */, 526824 /* TypeParameterExcludes */); + } + else { + bindAnonymousDeclaration(node, 262144 /* TypeParameter */, getDeclarationName(node)); // TODO: GH#18217 + } + } + else { + declareSymbolAndAddToSymbolTable(node, 262144 /* TypeParameter */, 526824 /* TypeParameterExcludes */); + } + } + // reachability checks + function shouldReportErrorOnModuleDeclaration(node) { + var instanceState = getModuleInstanceState(node); + return instanceState === 1 /* Instantiated */ || (instanceState === 2 /* ConstEnumOnly */ && !!options.preserveConstEnums); + } + function checkUnreachable(node) { + if (!(currentFlow.flags & 1 /* Unreachable */)) { + return false; + } + if (currentFlow === unreachableFlow) { + var reportError = + // report error on all statements except empty ones + (ts.isStatementButNotDeclaration(node) && node.kind !== 224 /* EmptyStatement */) || + // report error on class declarations + node.kind === 245 /* ClassDeclaration */ || + // report error on instantiated modules or const-enums only modules if preserveConstEnums is set + (node.kind === 249 /* ModuleDeclaration */ && shouldReportErrorOnModuleDeclaration(node)); + if (reportError) { + currentFlow = reportedUnreachableFlow; + if (!options.allowUnreachableCode) { + // unreachable code is reported if + // - user has explicitly asked about it AND + // - statement is in not ambient context (statements in ambient context is already an error + // so we should not report extras) AND + // - node is not variable statement OR + // - node is block scoped variable statement OR + // - node is not block scoped variable statement and at least one variable declaration has initializer + // Rationale: we don't want to report errors on non-initialized var's since they are hoisted + // On the other side we do want to report errors on non-initialized 'lets' because of TDZ + var isError_1 = ts.unreachableCodeIsError(options) && + !(node.flags & 8388608 /* Ambient */) && + (!ts.isVariableStatement(node) || + !!(ts.getCombinedNodeFlags(node.declarationList) & 3 /* BlockScoped */) || + node.declarationList.declarations.some(function (d) { return !!d.initializer; })); + eachUnreachableRange(node, function (start, end) { return errorOrSuggestionOnRange(isError_1, start, end, ts.Diagnostics.Unreachable_code_detected); }); + } + } + } + return true; + } + } + function eachUnreachableRange(node, cb) { + if (ts.isStatement(node) && isExecutableStatement(node) && ts.isBlock(node.parent)) { + var statements = node.parent.statements; + var slice_1 = ts.sliceAfter(statements, node); + ts.getRangesWhere(slice_1, isExecutableStatement, function (start, afterEnd) { return cb(slice_1[start], slice_1[afterEnd - 1]); }); + } + else { + cb(node, node); + } + } + // As opposed to a pure declaration like an `interface` + function isExecutableStatement(s) { + // Don't remove statements that can validly be used before they appear. + return !ts.isFunctionDeclaration(s) && !isPurelyTypeDeclaration(s) && !ts.isEnumDeclaration(s) && + // `var x;` may declare a variable used above + !(ts.isVariableStatement(s) && !(ts.getCombinedNodeFlags(s) & (1 /* Let */ | 2 /* Const */)) && s.declarationList.declarations.some(function (d) { return !d.initializer; })); + } + function isPurelyTypeDeclaration(s) { + switch (s.kind) { + case 246 /* InterfaceDeclaration */: + case 247 /* TypeAliasDeclaration */: + return true; + case 249 /* ModuleDeclaration */: + return getModuleInstanceState(s) !== 1 /* Instantiated */; + case 248 /* EnumDeclaration */: + return ts.hasModifier(s, 2048 /* Const */); + default: + return false; + } + } + function isExportsOrModuleExportsOrAlias(sourceFile, node) { + var i = 0; + var q = [node]; + while (q.length && i < 100) { + i++; + node = q.shift(); + if (ts.isExportsIdentifier(node) || ts.isModuleExportsAccessExpression(node)) { + return true; + } + else if (ts.isIdentifier(node)) { + var symbol = lookupSymbolForNameWorker(sourceFile, node.escapedText); + if (!!symbol && !!symbol.valueDeclaration && ts.isVariableDeclaration(symbol.valueDeclaration) && !!symbol.valueDeclaration.initializer) { + var init = symbol.valueDeclaration.initializer; + q.push(init); + if (ts.isAssignmentExpression(init, /*excludeCompoundAssignment*/ true)) { + q.push(init.left); + q.push(init.right); + } + } + } + } + return false; + } + ts.isExportsOrModuleExportsOrAlias = isExportsOrModuleExportsOrAlias; + function lookupSymbolForNameWorker(container, name) { + var local = container.locals && container.locals.get(name); + if (local) { + return local.exportSymbol || local; + } + if (ts.isSourceFile(container) && container.jsGlobalAugmentations && container.jsGlobalAugmentations.has(name)) { + return container.jsGlobalAugmentations.get(name); + } + return container.symbol && container.symbol.exports && container.symbol.exports.get(name); + } + /** + * Computes the transform flags for a node, given the transform flags of its subtree + * + * @param node The node to analyze + * @param subtreeFlags Transform flags computed for this node's subtree + */ + function computeTransformFlagsForNode(node, subtreeFlags) { + var kind = node.kind; + switch (kind) { + case 196 /* CallExpression */: + return computeCallExpression(node, subtreeFlags); + case 197 /* NewExpression */: + return computeNewExpression(node, subtreeFlags); + case 249 /* ModuleDeclaration */: + return computeModuleDeclaration(node, subtreeFlags); + case 200 /* ParenthesizedExpression */: + return computeParenthesizedExpression(node, subtreeFlags); + case 209 /* BinaryExpression */: + return computeBinaryExpression(node, subtreeFlags); + case 226 /* ExpressionStatement */: + return computeExpressionStatement(node, subtreeFlags); + case 156 /* Parameter */: + return computeParameter(node, subtreeFlags); + case 202 /* ArrowFunction */: + return computeArrowFunction(node, subtreeFlags); + case 201 /* FunctionExpression */: + return computeFunctionExpression(node, subtreeFlags); + case 244 /* FunctionDeclaration */: + return computeFunctionDeclaration(node, subtreeFlags); + case 242 /* VariableDeclaration */: + return computeVariableDeclaration(node, subtreeFlags); + case 243 /* VariableDeclarationList */: + return computeVariableDeclarationList(node, subtreeFlags); + case 225 /* VariableStatement */: + return computeVariableStatement(node, subtreeFlags); + case 238 /* LabeledStatement */: + return computeLabeledStatement(node, subtreeFlags); + case 245 /* ClassDeclaration */: + return computeClassDeclaration(node, subtreeFlags); + case 214 /* ClassExpression */: + return computeClassExpression(node, subtreeFlags); + case 279 /* HeritageClause */: + return computeHeritageClause(node, subtreeFlags); + case 280 /* CatchClause */: + return computeCatchClause(node, subtreeFlags); + case 216 /* ExpressionWithTypeArguments */: + return computeExpressionWithTypeArguments(node, subtreeFlags); + case 162 /* Constructor */: + return computeConstructor(node, subtreeFlags); + case 159 /* PropertyDeclaration */: + return computePropertyDeclaration(node, subtreeFlags); + case 161 /* MethodDeclaration */: + return computeMethod(node, subtreeFlags); + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + return computeAccessor(node, subtreeFlags); + case 253 /* ImportEqualsDeclaration */: + return computeImportEquals(node, subtreeFlags); + case 194 /* PropertyAccessExpression */: + return computePropertyAccess(node, subtreeFlags); + case 195 /* ElementAccessExpression */: + return computeElementAccess(node, subtreeFlags); + case 267 /* JsxSelfClosingElement */: + case 268 /* JsxOpeningElement */: + return computeJsxOpeningLikeElement(node, subtreeFlags); + default: + return computeOther(node, kind, subtreeFlags); + } + } + ts.computeTransformFlagsForNode = computeTransformFlagsForNode; + function computeCallExpression(node, subtreeFlags) { + var transformFlags = subtreeFlags; + var callee = ts.skipOuterExpressions(node.expression); + var expression = node.expression; + if (node.flags & 32 /* OptionalChain */) { + transformFlags |= 8 /* ContainsES2020 */; + } + if (node.typeArguments) { + transformFlags |= 1 /* AssertTypeScript */; + } + if (subtreeFlags & 8192 /* ContainsRestOrSpread */ || ts.isSuperOrSuperProperty(callee)) { + // If the this node contains a SpreadExpression, or is a super call, then it is an ES6 + // node. + transformFlags |= 256 /* AssertES2015 */; + if (ts.isSuperProperty(callee)) { + transformFlags |= 4096 /* ContainsLexicalThis */; + } + } + if (expression.kind === 96 /* ImportKeyword */) { + transformFlags |= 2097152 /* ContainsDynamicImport */; + } + node.transformFlags = transformFlags | 536870912 /* HasComputedFlags */; + return transformFlags & ~536879104 /* ArrayLiteralOrCallOrNewExcludes */; + } + function computeNewExpression(node, subtreeFlags) { + var transformFlags = subtreeFlags; + if (node.typeArguments) { + transformFlags |= 1 /* AssertTypeScript */; + } + if (subtreeFlags & 8192 /* ContainsRestOrSpread */) { + // If the this node contains a SpreadElementExpression then it is an ES6 + // node. + transformFlags |= 256 /* AssertES2015 */; + } + node.transformFlags = transformFlags | 536870912 /* HasComputedFlags */; + return transformFlags & ~536879104 /* ArrayLiteralOrCallOrNewExcludes */; + } + function computeJsxOpeningLikeElement(node, subtreeFlags) { + var transformFlags = subtreeFlags | 2 /* AssertJsx */; + if (node.typeArguments) { + transformFlags |= 1 /* AssertTypeScript */; + } + node.transformFlags = transformFlags | 536870912 /* HasComputedFlags */; + return transformFlags & ~536870912 /* NodeExcludes */; + } + function computeBinaryExpression(node, subtreeFlags) { + var transformFlags = subtreeFlags; + var operatorTokenKind = node.operatorToken.kind; + var leftKind = node.left.kind; + if (operatorTokenKind === 60 /* QuestionQuestionToken */) { + transformFlags |= 8 /* AssertES2020 */; + } + else if (operatorTokenKind === 62 /* EqualsToken */ && leftKind === 193 /* ObjectLiteralExpression */) { + // Destructuring object assignments with are ES2015 syntax + // and possibly ES2018 if they contain rest + transformFlags |= 32 /* AssertES2018 */ | 256 /* AssertES2015 */ | 1024 /* AssertDestructuringAssignment */; + } + else if (operatorTokenKind === 62 /* EqualsToken */ && leftKind === 192 /* ArrayLiteralExpression */) { + // Destructuring assignments are ES2015 syntax. + transformFlags |= 256 /* AssertES2015 */ | 1024 /* AssertDestructuringAssignment */; + } + else if (operatorTokenKind === 42 /* AsteriskAsteriskToken */ + || operatorTokenKind === 66 /* AsteriskAsteriskEqualsToken */) { + // Exponentiation is ES2016 syntax. + transformFlags |= 128 /* AssertES2016 */; + } + node.transformFlags = transformFlags | 536870912 /* HasComputedFlags */; + return transformFlags & ~536870912 /* NodeExcludes */; + } + function computeParameter(node, subtreeFlags) { + var transformFlags = subtreeFlags; + var name = node.name; + var initializer = node.initializer; + var dotDotDotToken = node.dotDotDotToken; + // The '?' token, type annotations, decorators, and 'this' parameters are TypeSCript + // syntax. + if (node.questionToken + || node.type + || (subtreeFlags & 2048 /* ContainsTypeScriptClassSyntax */ && ts.some(node.decorators)) + || ts.isThisIdentifier(name)) { + transformFlags |= 1 /* AssertTypeScript */; + } + // If a parameter has an accessibility modifier, then it is TypeScript syntax. + if (ts.hasModifier(node, 92 /* ParameterPropertyModifier */)) { + transformFlags |= 1 /* AssertTypeScript */ | 2048 /* ContainsTypeScriptClassSyntax */; + } + // parameters with object rest destructuring are ES2018 syntax + if (subtreeFlags & 16384 /* ContainsObjectRestOrSpread */) { + transformFlags |= 32 /* AssertES2018 */; + } + // If a parameter has an initializer, a binding pattern or a dotDotDot token, then + // it is ES6 syntax and its container must emit default value assignments or parameter destructuring downlevel. + if (subtreeFlags & 131072 /* ContainsBindingPattern */ || initializer || dotDotDotToken) { + transformFlags |= 256 /* AssertES2015 */; + } + node.transformFlags = transformFlags | 536870912 /* HasComputedFlags */; + return transformFlags & ~536870912 /* ParameterExcludes */; + } + function computeParenthesizedExpression(node, subtreeFlags) { + var transformFlags = subtreeFlags; + var expression = node.expression; + var expressionKind = expression.kind; + // If the node is synthesized, it means the emitter put the parentheses there, + // not the user. If we didn't want them, the emitter would not have put them + // there. + if (expressionKind === 217 /* AsExpression */ + || expressionKind === 199 /* TypeAssertionExpression */) { + transformFlags |= 1 /* AssertTypeScript */; + } + node.transformFlags = transformFlags | 536870912 /* HasComputedFlags */; + return transformFlags & ~536870912 /* OuterExpressionExcludes */; + } + function computeClassDeclaration(node, subtreeFlags) { + var transformFlags; + if (ts.hasModifier(node, 2 /* Ambient */)) { + // An ambient declaration is TypeScript syntax. + transformFlags = 1 /* AssertTypeScript */; + } + else { + // A ClassDeclaration is ES6 syntax. + transformFlags = subtreeFlags | 256 /* AssertES2015 */; + // A class with a parameter property assignment or decorator is TypeScript syntax. + // An exported declaration may be TypeScript syntax, but is handled by the visitor + // for a namespace declaration. + if ((subtreeFlags & 2048 /* ContainsTypeScriptClassSyntax */) + || node.typeParameters) { + transformFlags |= 1 /* AssertTypeScript */; + } + } + node.transformFlags = transformFlags | 536870912 /* HasComputedFlags */; + return transformFlags & ~536905728 /* ClassExcludes */; + } + function computeClassExpression(node, subtreeFlags) { + // A ClassExpression is ES6 syntax. + var transformFlags = subtreeFlags | 256 /* AssertES2015 */; + // A class with a parameter property assignment or decorator is TypeScript syntax. + if (subtreeFlags & 2048 /* ContainsTypeScriptClassSyntax */ + || node.typeParameters) { + transformFlags |= 1 /* AssertTypeScript */; + } + node.transformFlags = transformFlags | 536870912 /* HasComputedFlags */; + return transformFlags & ~536905728 /* ClassExcludes */; + } + function computeHeritageClause(node, subtreeFlags) { + var transformFlags = subtreeFlags; + switch (node.token) { + case 90 /* ExtendsKeyword */: + // An `extends` HeritageClause is ES6 syntax. + transformFlags |= 256 /* AssertES2015 */; + break; + case 113 /* ImplementsKeyword */: + // An `implements` HeritageClause is TypeScript syntax. + transformFlags |= 1 /* AssertTypeScript */; + break; + default: + ts.Debug.fail("Unexpected token for heritage clause"); + break; + } + node.transformFlags = transformFlags | 536870912 /* HasComputedFlags */; + return transformFlags & ~536870912 /* NodeExcludes */; + } + function computeCatchClause(node, subtreeFlags) { + var transformFlags = subtreeFlags; + if (!node.variableDeclaration) { + transformFlags |= 16 /* AssertES2019 */; + } + else if (ts.isBindingPattern(node.variableDeclaration.name)) { + transformFlags |= 256 /* AssertES2015 */; + } + node.transformFlags = transformFlags | 536870912 /* HasComputedFlags */; + return transformFlags & ~536887296 /* CatchClauseExcludes */; + } + function computeExpressionWithTypeArguments(node, subtreeFlags) { + // An ExpressionWithTypeArguments is ES6 syntax, as it is used in the + // extends clause of a class. + var transformFlags = subtreeFlags | 256 /* AssertES2015 */; + // If an ExpressionWithTypeArguments contains type arguments, then it + // is TypeScript syntax. + if (node.typeArguments) { + transformFlags |= 1 /* AssertTypeScript */; + } + node.transformFlags = transformFlags | 536870912 /* HasComputedFlags */; + return transformFlags & ~536870912 /* NodeExcludes */; + } + function computeConstructor(node, subtreeFlags) { + var transformFlags = subtreeFlags; + // TypeScript-specific modifiers and overloads are TypeScript syntax + if (ts.hasModifier(node, 2270 /* TypeScriptModifier */) + || !node.body) { + transformFlags |= 1 /* AssertTypeScript */; + } + // function declarations with object rest destructuring are ES2018 syntax + if (subtreeFlags & 16384 /* ContainsObjectRestOrSpread */) { + transformFlags |= 32 /* AssertES2018 */; + } + node.transformFlags = transformFlags | 536870912 /* HasComputedFlags */; + return transformFlags & ~538923008 /* ConstructorExcludes */; + } + function computeMethod(node, subtreeFlags) { + // A MethodDeclaration is ES6 syntax. + var transformFlags = subtreeFlags | 256 /* AssertES2015 */; + // Decorators, TypeScript-specific modifiers, type parameters, type annotations, and + // overloads are TypeScript syntax. + if (node.decorators + || ts.hasModifier(node, 2270 /* TypeScriptModifier */) + || node.typeParameters + || node.type + || !node.body + || node.questionToken) { + transformFlags |= 1 /* AssertTypeScript */; + } + // function declarations with object rest destructuring are ES2018 syntax + if (subtreeFlags & 16384 /* ContainsObjectRestOrSpread */) { + transformFlags |= 32 /* AssertES2018 */; + } + // An async method declaration is ES2017 syntax. + if (ts.hasModifier(node, 256 /* Async */)) { + transformFlags |= node.asteriskToken ? 32 /* AssertES2018 */ : 64 /* AssertES2017 */; + } + if (node.asteriskToken) { + transformFlags |= 512 /* AssertGenerator */; + } + node.transformFlags = transformFlags | 536870912 /* HasComputedFlags */; + return propagatePropertyNameFlags(node.name, transformFlags & ~538923008 /* MethodOrAccessorExcludes */); + } + function computeAccessor(node, subtreeFlags) { + var transformFlags = subtreeFlags; + // Decorators, TypeScript-specific modifiers, type annotations, and overloads are + // TypeScript syntax. + if (node.decorators + || ts.hasModifier(node, 2270 /* TypeScriptModifier */) + || node.type + || !node.body) { + transformFlags |= 1 /* AssertTypeScript */; + } + // function declarations with object rest destructuring are ES2018 syntax + if (subtreeFlags & 16384 /* ContainsObjectRestOrSpread */) { + transformFlags |= 32 /* AssertES2018 */; + } + node.transformFlags = transformFlags | 536870912 /* HasComputedFlags */; + return propagatePropertyNameFlags(node.name, transformFlags & ~538923008 /* MethodOrAccessorExcludes */); + } + function computePropertyDeclaration(node, subtreeFlags) { + var transformFlags = subtreeFlags | 4194304 /* ContainsClassFields */; + // Decorators, TypeScript-specific modifiers, and type annotations are TypeScript syntax. + if (ts.some(node.decorators) || ts.hasModifier(node, 2270 /* TypeScriptModifier */) || node.type || node.questionToken || node.exclamationToken) { + transformFlags |= 1 /* AssertTypeScript */; + } + // Hoisted variables related to class properties should live within the TypeScript class wrapper. + if (ts.isComputedPropertyName(node.name) || (ts.hasStaticModifier(node) && node.initializer)) { + transformFlags |= 2048 /* ContainsTypeScriptClassSyntax */; + } + node.transformFlags = transformFlags | 536870912 /* HasComputedFlags */; + return propagatePropertyNameFlags(node.name, transformFlags & ~536875008 /* PropertyExcludes */); + } + function computeFunctionDeclaration(node, subtreeFlags) { + var transformFlags; + var modifierFlags = ts.getModifierFlags(node); + var body = node.body; + if (!body || (modifierFlags & 2 /* Ambient */)) { + // An ambient declaration is TypeScript syntax. + // A FunctionDeclaration without a body is an overload and is TypeScript syntax. + transformFlags = 1 /* AssertTypeScript */; + } + else { + transformFlags = subtreeFlags | 1048576 /* ContainsHoistedDeclarationOrCompletion */; + // TypeScript-specific modifiers, type parameters, and type annotations are TypeScript + // syntax. + if (modifierFlags & 2270 /* TypeScriptModifier */ + || node.typeParameters + || node.type) { + transformFlags |= 1 /* AssertTypeScript */; + } + // An async function declaration is ES2017 syntax. + if (modifierFlags & 256 /* Async */) { + transformFlags |= node.asteriskToken ? 32 /* AssertES2018 */ : 64 /* AssertES2017 */; + } + // function declarations with object rest destructuring are ES2018 syntax + if (subtreeFlags & 16384 /* ContainsObjectRestOrSpread */) { + transformFlags |= 32 /* AssertES2018 */; + } + // If a FunctionDeclaration is generator function and is the body of a + // transformed async function, then this node can be transformed to a + // down-level generator. + // Currently we do not support transforming any other generator functions + // down level. + if (node.asteriskToken) { + transformFlags |= 512 /* AssertGenerator */; + } + } + node.transformFlags = transformFlags | 536870912 /* HasComputedFlags */; + return transformFlags & ~538925056 /* FunctionExcludes */; + } + function computeFunctionExpression(node, subtreeFlags) { + var transformFlags = subtreeFlags; + // TypeScript-specific modifiers, type parameters, and type annotations are TypeScript + // syntax. + if (ts.hasModifier(node, 2270 /* TypeScriptModifier */) + || node.typeParameters + || node.type) { + transformFlags |= 1 /* AssertTypeScript */; + } + // An async function expression is ES2017 syntax. + if (ts.hasModifier(node, 256 /* Async */)) { + transformFlags |= node.asteriskToken ? 32 /* AssertES2018 */ : 64 /* AssertES2017 */; + } + // function expressions with object rest destructuring are ES2018 syntax + if (subtreeFlags & 16384 /* ContainsObjectRestOrSpread */) { + transformFlags |= 32 /* AssertES2018 */; + } + // If a FunctionExpression is generator function and is the body of a + // transformed async function, then this node can be transformed to a + // down-level generator. + if (node.asteriskToken) { + transformFlags |= 512 /* AssertGenerator */; + } + node.transformFlags = transformFlags | 536870912 /* HasComputedFlags */; + return transformFlags & ~538925056 /* FunctionExcludes */; + } + function computeArrowFunction(node, subtreeFlags) { + // An ArrowFunction is ES6 syntax, and excludes markers that should not escape the scope of an ArrowFunction. + var transformFlags = subtreeFlags | 256 /* AssertES2015 */; + // TypeScript-specific modifiers, type parameters, and type annotations are TypeScript + // syntax. + if (ts.hasModifier(node, 2270 /* TypeScriptModifier */) + || node.typeParameters + || node.type) { + transformFlags |= 1 /* AssertTypeScript */; + } + // An async arrow function is ES2017 syntax. + if (ts.hasModifier(node, 256 /* Async */)) { + transformFlags |= 64 /* AssertES2017 */; + } + // arrow functions with object rest destructuring are ES2018 syntax + if (subtreeFlags & 16384 /* ContainsObjectRestOrSpread */) { + transformFlags |= 32 /* AssertES2018 */; + } + node.transformFlags = transformFlags | 536870912 /* HasComputedFlags */; + return transformFlags & ~538920960 /* ArrowFunctionExcludes */; + } + function computePropertyAccess(node, subtreeFlags) { + var transformFlags = subtreeFlags; + if (node.flags & 32 /* OptionalChain */) { + transformFlags |= 8 /* ContainsES2020 */; + } + // If a PropertyAccessExpression starts with a super keyword, then it is + // ES6 syntax, and requires a lexical `this` binding. + if (node.expression.kind === 102 /* SuperKeyword */) { + // super inside of an async function requires hoisting the super access (ES2017). + // same for super inside of an async generator, which is ES2018. + transformFlags |= 64 /* ContainsES2017 */ | 32 /* ContainsES2018 */; + } + node.transformFlags = transformFlags | 536870912 /* HasComputedFlags */; + return transformFlags & ~536870912 /* PropertyAccessExcludes */; + } + function computeElementAccess(node, subtreeFlags) { + var transformFlags = subtreeFlags; + if (node.flags & 32 /* OptionalChain */) { + transformFlags |= 8 /* ContainsES2020 */; + } + // If an ElementAccessExpression starts with a super keyword, then it is + // ES6 syntax, and requires a lexical `this` binding. + if (node.expression.kind === 102 /* SuperKeyword */) { + // super inside of an async function requires hoisting the super access (ES2017). + // same for super inside of an async generator, which is ES2018. + transformFlags |= 64 /* ContainsES2017 */ | 32 /* ContainsES2018 */; + } + node.transformFlags = transformFlags | 536870912 /* HasComputedFlags */; + return transformFlags & ~536870912 /* PropertyAccessExcludes */; + } + function computeVariableDeclaration(node, subtreeFlags) { + var transformFlags = subtreeFlags; + transformFlags |= 256 /* AssertES2015 */ | 131072 /* ContainsBindingPattern */; // TODO(rbuckton): Why are these set unconditionally? + // A VariableDeclaration containing ObjectRest is ES2018 syntax + if (subtreeFlags & 16384 /* ContainsObjectRestOrSpread */) { + transformFlags |= 32 /* AssertES2018 */; + } + // Type annotations are TypeScript syntax. + if (node.type || node.exclamationToken) { + transformFlags |= 1 /* AssertTypeScript */; + } + node.transformFlags = transformFlags | 536870912 /* HasComputedFlags */; + return transformFlags & ~536870912 /* NodeExcludes */; + } + function computeVariableStatement(node, subtreeFlags) { + var transformFlags; + var declarationListTransformFlags = node.declarationList.transformFlags; + // An ambient declaration is TypeScript syntax. + if (ts.hasModifier(node, 2 /* Ambient */)) { + transformFlags = 1 /* AssertTypeScript */; + } + else { + transformFlags = subtreeFlags; + if (declarationListTransformFlags & 131072 /* ContainsBindingPattern */) { + transformFlags |= 256 /* AssertES2015 */; + } + } + node.transformFlags = transformFlags | 536870912 /* HasComputedFlags */; + return transformFlags & ~536870912 /* NodeExcludes */; + } + function computeLabeledStatement(node, subtreeFlags) { + var transformFlags = subtreeFlags; + // A labeled statement containing a block scoped binding *may* need to be transformed from ES6. + if (subtreeFlags & 65536 /* ContainsBlockScopedBinding */ + && ts.isIterationStatement(node, /*lookInLabeledStatements*/ true)) { + transformFlags |= 256 /* AssertES2015 */; + } + node.transformFlags = transformFlags | 536870912 /* HasComputedFlags */; + return transformFlags & ~536870912 /* NodeExcludes */; + } + function computeImportEquals(node, subtreeFlags) { + var transformFlags = subtreeFlags; + // An ImportEqualsDeclaration with a namespace reference is TypeScript. + if (!ts.isExternalModuleImportEqualsDeclaration(node)) { + transformFlags |= 1 /* AssertTypeScript */; + } + node.transformFlags = transformFlags | 536870912 /* HasComputedFlags */; + return transformFlags & ~536870912 /* NodeExcludes */; + } + function computeExpressionStatement(node, subtreeFlags) { + var transformFlags = subtreeFlags; + node.transformFlags = transformFlags | 536870912 /* HasComputedFlags */; + return transformFlags & ~536870912 /* NodeExcludes */; + } + function computeModuleDeclaration(node, subtreeFlags) { + var transformFlags = 1 /* AssertTypeScript */; + var modifierFlags = ts.getModifierFlags(node); + if ((modifierFlags & 2 /* Ambient */) === 0) { + transformFlags |= subtreeFlags; + } + node.transformFlags = transformFlags | 536870912 /* HasComputedFlags */; + return transformFlags & ~537991168 /* ModuleExcludes */; + } + function computeVariableDeclarationList(node, subtreeFlags) { + var transformFlags = subtreeFlags | 1048576 /* ContainsHoistedDeclarationOrCompletion */; + if (subtreeFlags & 131072 /* ContainsBindingPattern */) { + transformFlags |= 256 /* AssertES2015 */; + } + // If a VariableDeclarationList is `let` or `const`, then it is ES6 syntax. + if (node.flags & 3 /* BlockScoped */) { + transformFlags |= 256 /* AssertES2015 */ | 65536 /* ContainsBlockScopedBinding */; + } + node.transformFlags = transformFlags | 536870912 /* HasComputedFlags */; + return transformFlags & ~537018368 /* VariableDeclarationListExcludes */; + } + function computeOther(node, kind, subtreeFlags) { + // Mark transformations needed for each node + var transformFlags = subtreeFlags; + var excludeFlags = 536870912 /* NodeExcludes */; + switch (kind) { + case 126 /* AsyncKeyword */: + // async is ES2017 syntax, but may be ES2018 syntax (for async generators) + transformFlags |= 32 /* AssertES2018 */ | 64 /* AssertES2017 */; + break; + case 206 /* AwaitExpression */: + // await is ES2017 syntax, but may be ES2018 syntax (for async generators) + transformFlags |= 32 /* AssertES2018 */ | 64 /* AssertES2017 */ | 524288 /* ContainsAwait */; + break; + case 199 /* TypeAssertionExpression */: + case 217 /* AsExpression */: + case 326 /* PartiallyEmittedExpression */: + // These nodes are TypeScript syntax. + transformFlags |= 1 /* AssertTypeScript */; + excludeFlags = 536870912 /* OuterExpressionExcludes */; + break; + case 119 /* PublicKeyword */: + case 117 /* PrivateKeyword */: + case 118 /* ProtectedKeyword */: + case 122 /* AbstractKeyword */: + case 130 /* DeclareKeyword */: + case 81 /* ConstKeyword */: + case 248 /* EnumDeclaration */: + case 284 /* EnumMember */: + case 218 /* NonNullExpression */: + case 138 /* ReadonlyKeyword */: + // These nodes are TypeScript syntax. + transformFlags |= 1 /* AssertTypeScript */; + break; + case 266 /* JsxElement */: + case 11 /* JsxText */: + case 269 /* JsxClosingElement */: + case 270 /* JsxFragment */: + case 271 /* JsxOpeningFragment */: + case 272 /* JsxClosingFragment */: + case 273 /* JsxAttribute */: + case 274 /* JsxAttributes */: + case 275 /* JsxSpreadAttribute */: + case 276 /* JsxExpression */: + // These nodes are Jsx syntax. + transformFlags |= 2 /* AssertJsx */; + break; + case 14 /* NoSubstitutionTemplateLiteral */: + case 15 /* TemplateHead */: + case 16 /* TemplateMiddle */: + case 17 /* TemplateTail */: + if (node.templateFlags) { + transformFlags |= 32 /* AssertES2018 */; + break; + } + // falls through + case 198 /* TaggedTemplateExpression */: + if (ts.hasInvalidEscape(node.template)) { + transformFlags |= 32 /* AssertES2018 */; + break; + } + // falls through + case 211 /* TemplateExpression */: + case 282 /* ShorthandPropertyAssignment */: + case 120 /* StaticKeyword */: + case 219 /* MetaProperty */: + // These nodes are ES6 syntax. + transformFlags |= 256 /* AssertES2015 */; + break; + case 10 /* StringLiteral */: + if (node.hasExtendedUnicodeEscape) { + transformFlags |= 256 /* AssertES2015 */; + } + break; + case 8 /* NumericLiteral */: + if (node.numericLiteralFlags & 384 /* BinaryOrOctalSpecifier */) { + transformFlags |= 256 /* AssertES2015 */; + } + break; + case 9 /* BigIntLiteral */: + transformFlags |= 4 /* AssertESNext */; + break; + case 232 /* ForOfStatement */: + // This node is either ES2015 syntax or ES2017 syntax (if it is a for-await-of). + if (node.awaitModifier) { + transformFlags |= 32 /* AssertES2018 */; + } + transformFlags |= 256 /* AssertES2015 */; + break; + case 212 /* YieldExpression */: + // This node is either ES2015 syntax (in a generator) or ES2017 syntax (in an async + // generator). + transformFlags |= 32 /* AssertES2018 */ | 256 /* AssertES2015 */ | 262144 /* ContainsYield */; + break; + case 125 /* AnyKeyword */: + case 140 /* NumberKeyword */: + case 151 /* BigIntKeyword */: + case 137 /* NeverKeyword */: + case 141 /* ObjectKeyword */: + case 143 /* StringKeyword */: + case 128 /* BooleanKeyword */: + case 144 /* SymbolKeyword */: + case 110 /* VoidKeyword */: + case 155 /* TypeParameter */: + case 158 /* PropertySignature */: + case 160 /* MethodSignature */: + case 165 /* CallSignature */: + case 166 /* ConstructSignature */: + case 167 /* IndexSignature */: + case 168 /* TypePredicate */: + case 169 /* TypeReference */: + case 170 /* FunctionType */: + case 171 /* ConstructorType */: + case 172 /* TypeQuery */: + case 173 /* TypeLiteral */: + case 174 /* ArrayType */: + case 175 /* TupleType */: + case 176 /* OptionalType */: + case 177 /* RestType */: + case 178 /* UnionType */: + case 179 /* IntersectionType */: + case 180 /* ConditionalType */: + case 181 /* InferType */: + case 182 /* ParenthesizedType */: + case 246 /* InterfaceDeclaration */: + case 247 /* TypeAliasDeclaration */: + case 183 /* ThisType */: + case 184 /* TypeOperator */: + case 185 /* IndexedAccessType */: + case 186 /* MappedType */: + case 187 /* LiteralType */: + case 252 /* NamespaceExportDeclaration */: + // Types and signatures are TypeScript syntax, and exclude all other facts. + transformFlags = 1 /* AssertTypeScript */; + excludeFlags = -2 /* TypeExcludes */; + break; + case 154 /* ComputedPropertyName */: + // Even though computed property names are ES6, we don't treat them as such. + // This is so that they can flow through PropertyName transforms unaffected. + // Instead, we mark the container as ES6, so that it can properly handle the transform. + transformFlags |= 32768 /* ContainsComputedPropertyName */; + break; + case 213 /* SpreadElement */: + transformFlags |= 256 /* AssertES2015 */ | 8192 /* ContainsRestOrSpread */; + break; + case 283 /* SpreadAssignment */: + transformFlags |= 32 /* AssertES2018 */ | 16384 /* ContainsObjectRestOrSpread */; + break; + case 102 /* SuperKeyword */: + // This node is ES6 syntax. + transformFlags |= 256 /* AssertES2015 */; + excludeFlags = 536870912 /* OuterExpressionExcludes */; // must be set to persist `Super` + break; + case 104 /* ThisKeyword */: + // Mark this node and its ancestors as containing a lexical `this` keyword. + transformFlags |= 4096 /* ContainsLexicalThis */; + break; + case 189 /* ObjectBindingPattern */: + transformFlags |= 256 /* AssertES2015 */ | 131072 /* ContainsBindingPattern */; + if (subtreeFlags & 8192 /* ContainsRestOrSpread */) { + transformFlags |= 32 /* AssertES2018 */ | 16384 /* ContainsObjectRestOrSpread */; + } + excludeFlags = 536879104 /* BindingPatternExcludes */; + break; + case 190 /* ArrayBindingPattern */: + transformFlags |= 256 /* AssertES2015 */ | 131072 /* ContainsBindingPattern */; + excludeFlags = 536879104 /* BindingPatternExcludes */; + break; + case 191 /* BindingElement */: + transformFlags |= 256 /* AssertES2015 */; + if (node.dotDotDotToken) { + transformFlags |= 8192 /* ContainsRestOrSpread */; + } + break; + case 157 /* Decorator */: + // This node is TypeScript syntax, and marks its container as also being TypeScript syntax. + transformFlags |= 1 /* AssertTypeScript */ | 2048 /* ContainsTypeScriptClassSyntax */; + break; + case 193 /* ObjectLiteralExpression */: + excludeFlags = 536922112 /* ObjectLiteralExcludes */; + if (subtreeFlags & 32768 /* ContainsComputedPropertyName */) { + // If an ObjectLiteralExpression contains a ComputedPropertyName, then it + // is an ES6 node. + transformFlags |= 256 /* AssertES2015 */; + } + if (subtreeFlags & 16384 /* ContainsObjectRestOrSpread */) { + // If an ObjectLiteralExpression contains a spread element, then it + // is an ES2018 node. + transformFlags |= 32 /* AssertES2018 */; + } + break; + case 192 /* ArrayLiteralExpression */: + excludeFlags = 536879104 /* ArrayLiteralOrCallOrNewExcludes */; + break; + case 228 /* DoStatement */: + case 229 /* WhileStatement */: + case 230 /* ForStatement */: + case 231 /* ForInStatement */: + // A loop containing a block scoped binding *may* need to be transformed from ES6. + if (subtreeFlags & 65536 /* ContainsBlockScopedBinding */) { + transformFlags |= 256 /* AssertES2015 */; + } + break; + case 290 /* SourceFile */: + break; + case 262 /* NamespaceExport */: + transformFlags |= 4 /* AssertESNext */; + break; + case 235 /* ReturnStatement */: + // Return statements may require an `await` in ES2018. + transformFlags |= 1048576 /* ContainsHoistedDeclarationOrCompletion */ | 32 /* AssertES2018 */; + break; + case 233 /* ContinueStatement */: + case 234 /* BreakStatement */: + transformFlags |= 1048576 /* ContainsHoistedDeclarationOrCompletion */; + break; + case 76 /* PrivateIdentifier */: + transformFlags |= 4194304 /* ContainsClassFields */; + break; + } + node.transformFlags = transformFlags | 536870912 /* HasComputedFlags */; + return transformFlags & ~excludeFlags; + } + function propagatePropertyNameFlags(node, transformFlags) { + return transformFlags | (node.transformFlags & 4096 /* PropertyNamePropagatingFlags */); + } + /** + * Gets the transform flags to exclude when unioning the transform flags of a subtree. + * + * NOTE: This needs to be kept up-to-date with the exclusions used in `computeTransformFlagsForNode`. + * For performance reasons, `computeTransformFlagsForNode` uses local constant values rather + * than calling this function. + */ + function getTransformFlagsSubtreeExclusions(kind) { + if (kind >= 168 /* FirstTypeNode */ && kind <= 188 /* LastTypeNode */) { + return -2 /* TypeExcludes */; + } + switch (kind) { + case 196 /* CallExpression */: + case 197 /* NewExpression */: + case 192 /* ArrayLiteralExpression */: + return 536879104 /* ArrayLiteralOrCallOrNewExcludes */; + case 249 /* ModuleDeclaration */: + return 537991168 /* ModuleExcludes */; + case 156 /* Parameter */: + return 536870912 /* ParameterExcludes */; + case 202 /* ArrowFunction */: + return 538920960 /* ArrowFunctionExcludes */; + case 201 /* FunctionExpression */: + case 244 /* FunctionDeclaration */: + return 538925056 /* FunctionExcludes */; + case 243 /* VariableDeclarationList */: + return 537018368 /* VariableDeclarationListExcludes */; + case 245 /* ClassDeclaration */: + case 214 /* ClassExpression */: + return 536905728 /* ClassExcludes */; + case 162 /* Constructor */: + return 538923008 /* ConstructorExcludes */; + case 161 /* MethodDeclaration */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + return 538923008 /* MethodOrAccessorExcludes */; + case 125 /* AnyKeyword */: + case 140 /* NumberKeyword */: + case 151 /* BigIntKeyword */: + case 137 /* NeverKeyword */: + case 143 /* StringKeyword */: + case 141 /* ObjectKeyword */: + case 128 /* BooleanKeyword */: + case 144 /* SymbolKeyword */: + case 110 /* VoidKeyword */: + case 155 /* TypeParameter */: + case 158 /* PropertySignature */: + case 160 /* MethodSignature */: + case 165 /* CallSignature */: + case 166 /* ConstructSignature */: + case 167 /* IndexSignature */: + case 246 /* InterfaceDeclaration */: + case 247 /* TypeAliasDeclaration */: + return -2 /* TypeExcludes */; + case 193 /* ObjectLiteralExpression */: + return 536922112 /* ObjectLiteralExcludes */; + case 280 /* CatchClause */: + return 536887296 /* CatchClauseExcludes */; + case 189 /* ObjectBindingPattern */: + case 190 /* ArrayBindingPattern */: + return 536879104 /* BindingPatternExcludes */; + case 199 /* TypeAssertionExpression */: + case 217 /* AsExpression */: + case 326 /* PartiallyEmittedExpression */: + case 200 /* ParenthesizedExpression */: + case 102 /* SuperKeyword */: + return 536870912 /* OuterExpressionExcludes */; + case 194 /* PropertyAccessExpression */: + case 195 /* ElementAccessExpression */: + return 536870912 /* PropertyAccessExcludes */; + default: + return 536870912 /* NodeExcludes */; + } + } + ts.getTransformFlagsSubtreeExclusions = getTransformFlagsSubtreeExclusions; + /** + * "Binds" JSDoc nodes in TypeScript code. + * Since we will never create symbols for JSDoc, we just set parent pointers instead. + */ + function setParentPointers(parent, child) { + child.parent = parent; + ts.forEachChild(child, function (grandchild) { return setParentPointers(child, grandchild); }); + } +})(ts || (ts = {})); +/** @internal */ +var ts; +(function (ts) { + function createGetSymbolWalker(getRestTypeOfSignature, getTypePredicateOfSignature, getReturnTypeOfSignature, getBaseTypes, resolveStructuredTypeMembers, getTypeOfSymbol, getResolvedSymbol, getIndexTypeOfStructuredType, getConstraintOfTypeParameter, getFirstIdentifier, getTypeArguments) { + return getSymbolWalker; + function getSymbolWalker(accept) { + if (accept === void 0) { accept = function () { return true; }; } + var visitedTypes = []; // Sparse array from id to type + var visitedSymbols = []; // Sparse array from id to symbol + return { + walkType: function (type) { + try { + visitType(type); + return { visitedTypes: ts.getOwnValues(visitedTypes), visitedSymbols: ts.getOwnValues(visitedSymbols) }; + } + finally { + ts.clear(visitedTypes); + ts.clear(visitedSymbols); + } + }, + walkSymbol: function (symbol) { + try { + visitSymbol(symbol); + return { visitedTypes: ts.getOwnValues(visitedTypes), visitedSymbols: ts.getOwnValues(visitedSymbols) }; + } + finally { + ts.clear(visitedTypes); + ts.clear(visitedSymbols); + } + }, + }; + function visitType(type) { + if (!type) { + return; + } + if (visitedTypes[type.id]) { + return; + } + visitedTypes[type.id] = type; + // Reuse visitSymbol to visit the type's symbol, + // but be sure to bail on recuring into the type if accept declines the symbol. + var shouldBail = visitSymbol(type.symbol); + if (shouldBail) + return; + // Visit the type's related types, if any + if (type.flags & 524288 /* Object */) { + var objectType = type; + var objectFlags = objectType.objectFlags; + if (objectFlags & 4 /* Reference */) { + visitTypeReference(type); + } + if (objectFlags & 32 /* Mapped */) { + visitMappedType(type); + } + if (objectFlags & (1 /* Class */ | 2 /* Interface */)) { + visitInterfaceType(type); + } + if (objectFlags & (8 /* Tuple */ | 16 /* Anonymous */)) { + visitObjectType(objectType); + } + } + if (type.flags & 262144 /* TypeParameter */) { + visitTypeParameter(type); + } + if (type.flags & 3145728 /* UnionOrIntersection */) { + visitUnionOrIntersectionType(type); + } + if (type.flags & 4194304 /* Index */) { + visitIndexType(type); + } + if (type.flags & 8388608 /* IndexedAccess */) { + visitIndexedAccessType(type); + } + } + function visitTypeReference(type) { + visitType(type.target); + ts.forEach(getTypeArguments(type), visitType); + } + function visitTypeParameter(type) { + visitType(getConstraintOfTypeParameter(type)); + } + function visitUnionOrIntersectionType(type) { + ts.forEach(type.types, visitType); + } + function visitIndexType(type) { + visitType(type.type); + } + function visitIndexedAccessType(type) { + visitType(type.objectType); + visitType(type.indexType); + visitType(type.constraint); + } + function visitMappedType(type) { + visitType(type.typeParameter); + visitType(type.constraintType); + visitType(type.templateType); + visitType(type.modifiersType); + } + function visitSignature(signature) { + var typePredicate = getTypePredicateOfSignature(signature); + if (typePredicate) { + visitType(typePredicate.type); + } + ts.forEach(signature.typeParameters, visitType); + for (var _i = 0, _a = signature.parameters; _i < _a.length; _i++) { + var parameter = _a[_i]; + visitSymbol(parameter); + } + visitType(getRestTypeOfSignature(signature)); + visitType(getReturnTypeOfSignature(signature)); + } + function visitInterfaceType(interfaceT) { + visitObjectType(interfaceT); + ts.forEach(interfaceT.typeParameters, visitType); + ts.forEach(getBaseTypes(interfaceT), visitType); + visitType(interfaceT.thisType); + } + function visitObjectType(type) { + var stringIndexType = getIndexTypeOfStructuredType(type, 0 /* String */); + visitType(stringIndexType); + var numberIndexType = getIndexTypeOfStructuredType(type, 1 /* Number */); + visitType(numberIndexType); + // The two checks above *should* have already resolved the type (if needed), so this should be cached + var resolved = resolveStructuredTypeMembers(type); + for (var _i = 0, _a = resolved.callSignatures; _i < _a.length; _i++) { + var signature = _a[_i]; + visitSignature(signature); + } + for (var _b = 0, _c = resolved.constructSignatures; _b < _c.length; _b++) { + var signature = _c[_b]; + visitSignature(signature); + } + for (var _d = 0, _e = resolved.properties; _d < _e.length; _d++) { + var p = _e[_d]; + visitSymbol(p); + } + } + function visitSymbol(symbol) { + if (!symbol) { + return false; + } + var symbolId = ts.getSymbolId(symbol); + if (visitedSymbols[symbolId]) { + return false; + } + visitedSymbols[symbolId] = symbol; + if (!accept(symbol)) { + return true; + } + var t = getTypeOfSymbol(symbol); + visitType(t); // Should handle members on classes and such + if (symbol.exports) { + symbol.exports.forEach(visitSymbol); + } + ts.forEach(symbol.declarations, function (d) { + // Type queries are too far resolved when we just visit the symbol's type + // (their type resolved directly to the member deeply referenced) + // So to get the intervening symbols, we need to check if there's a type + // query node on any of the symbol's declarations and get symbols there + if (d.type && d.type.kind === 172 /* TypeQuery */) { + var query = d.type; + var entity = getResolvedSymbol(getFirstIdentifier(query.exprName)); + visitSymbol(entity); + } + }); + return false; + } + } + } + ts.createGetSymbolWalker = createGetSymbolWalker; +})(ts || (ts = {})); +/* @internal */ +var ts; +(function (ts) { + var ambientModuleSymbolRegex = /^".+"$/; + var anon = "(anonymous)"; + var nextSymbolId = 1; + var nextNodeId = 1; + var nextMergeId = 1; + var nextFlowId = 1; + var IterationUse; + (function (IterationUse) { + IterationUse[IterationUse["AllowsSyncIterablesFlag"] = 1] = "AllowsSyncIterablesFlag"; + IterationUse[IterationUse["AllowsAsyncIterablesFlag"] = 2] = "AllowsAsyncIterablesFlag"; + IterationUse[IterationUse["AllowsStringInputFlag"] = 4] = "AllowsStringInputFlag"; + IterationUse[IterationUse["ForOfFlag"] = 8] = "ForOfFlag"; + IterationUse[IterationUse["YieldStarFlag"] = 16] = "YieldStarFlag"; + IterationUse[IterationUse["SpreadFlag"] = 32] = "SpreadFlag"; + IterationUse[IterationUse["DestructuringFlag"] = 64] = "DestructuringFlag"; + // Spread, Destructuring, Array element assignment + IterationUse[IterationUse["Element"] = 1] = "Element"; + IterationUse[IterationUse["Spread"] = 33] = "Spread"; + IterationUse[IterationUse["Destructuring"] = 65] = "Destructuring"; + IterationUse[IterationUse["ForOf"] = 13] = "ForOf"; + IterationUse[IterationUse["ForAwaitOf"] = 15] = "ForAwaitOf"; + IterationUse[IterationUse["YieldStar"] = 17] = "YieldStar"; + IterationUse[IterationUse["AsyncYieldStar"] = 19] = "AsyncYieldStar"; + IterationUse[IterationUse["GeneratorReturnType"] = 1] = "GeneratorReturnType"; + IterationUse[IterationUse["AsyncGeneratorReturnType"] = 2] = "AsyncGeneratorReturnType"; + })(IterationUse || (IterationUse = {})); + var IterationTypeKind; + (function (IterationTypeKind) { + IterationTypeKind[IterationTypeKind["Yield"] = 0] = "Yield"; + IterationTypeKind[IterationTypeKind["Return"] = 1] = "Return"; + IterationTypeKind[IterationTypeKind["Next"] = 2] = "Next"; + })(IterationTypeKind || (IterationTypeKind = {})); + var WideningKind; + (function (WideningKind) { + WideningKind[WideningKind["Normal"] = 0] = "Normal"; + WideningKind[WideningKind["FunctionReturn"] = 1] = "FunctionReturn"; + WideningKind[WideningKind["GeneratorNext"] = 2] = "GeneratorNext"; + WideningKind[WideningKind["GeneratorYield"] = 3] = "GeneratorYield"; + })(WideningKind || (WideningKind = {})); + var TypeFacts; + (function (TypeFacts) { + TypeFacts[TypeFacts["None"] = 0] = "None"; + TypeFacts[TypeFacts["TypeofEQString"] = 1] = "TypeofEQString"; + TypeFacts[TypeFacts["TypeofEQNumber"] = 2] = "TypeofEQNumber"; + TypeFacts[TypeFacts["TypeofEQBigInt"] = 4] = "TypeofEQBigInt"; + TypeFacts[TypeFacts["TypeofEQBoolean"] = 8] = "TypeofEQBoolean"; + TypeFacts[TypeFacts["TypeofEQSymbol"] = 16] = "TypeofEQSymbol"; + TypeFacts[TypeFacts["TypeofEQObject"] = 32] = "TypeofEQObject"; + TypeFacts[TypeFacts["TypeofEQFunction"] = 64] = "TypeofEQFunction"; + TypeFacts[TypeFacts["TypeofEQHostObject"] = 128] = "TypeofEQHostObject"; + TypeFacts[TypeFacts["TypeofNEString"] = 256] = "TypeofNEString"; + TypeFacts[TypeFacts["TypeofNENumber"] = 512] = "TypeofNENumber"; + TypeFacts[TypeFacts["TypeofNEBigInt"] = 1024] = "TypeofNEBigInt"; + TypeFacts[TypeFacts["TypeofNEBoolean"] = 2048] = "TypeofNEBoolean"; + TypeFacts[TypeFacts["TypeofNESymbol"] = 4096] = "TypeofNESymbol"; + TypeFacts[TypeFacts["TypeofNEObject"] = 8192] = "TypeofNEObject"; + TypeFacts[TypeFacts["TypeofNEFunction"] = 16384] = "TypeofNEFunction"; + TypeFacts[TypeFacts["TypeofNEHostObject"] = 32768] = "TypeofNEHostObject"; + TypeFacts[TypeFacts["EQUndefined"] = 65536] = "EQUndefined"; + TypeFacts[TypeFacts["EQNull"] = 131072] = "EQNull"; + TypeFacts[TypeFacts["EQUndefinedOrNull"] = 262144] = "EQUndefinedOrNull"; + TypeFacts[TypeFacts["NEUndefined"] = 524288] = "NEUndefined"; + TypeFacts[TypeFacts["NENull"] = 1048576] = "NENull"; + TypeFacts[TypeFacts["NEUndefinedOrNull"] = 2097152] = "NEUndefinedOrNull"; + TypeFacts[TypeFacts["Truthy"] = 4194304] = "Truthy"; + TypeFacts[TypeFacts["Falsy"] = 8388608] = "Falsy"; + TypeFacts[TypeFacts["All"] = 16777215] = "All"; + // The following members encode facts about particular kinds of types for use in the getTypeFacts function. + // The presence of a particular fact means that the given test is true for some (and possibly all) values + // of that kind of type. + TypeFacts[TypeFacts["BaseStringStrictFacts"] = 3735041] = "BaseStringStrictFacts"; + TypeFacts[TypeFacts["BaseStringFacts"] = 12582401] = "BaseStringFacts"; + TypeFacts[TypeFacts["StringStrictFacts"] = 16317953] = "StringStrictFacts"; + TypeFacts[TypeFacts["StringFacts"] = 16776705] = "StringFacts"; + TypeFacts[TypeFacts["EmptyStringStrictFacts"] = 12123649] = "EmptyStringStrictFacts"; + TypeFacts[TypeFacts["EmptyStringFacts"] = 12582401] = "EmptyStringFacts"; + TypeFacts[TypeFacts["NonEmptyStringStrictFacts"] = 7929345] = "NonEmptyStringStrictFacts"; + TypeFacts[TypeFacts["NonEmptyStringFacts"] = 16776705] = "NonEmptyStringFacts"; + TypeFacts[TypeFacts["BaseNumberStrictFacts"] = 3734786] = "BaseNumberStrictFacts"; + TypeFacts[TypeFacts["BaseNumberFacts"] = 12582146] = "BaseNumberFacts"; + TypeFacts[TypeFacts["NumberStrictFacts"] = 16317698] = "NumberStrictFacts"; + TypeFacts[TypeFacts["NumberFacts"] = 16776450] = "NumberFacts"; + TypeFacts[TypeFacts["ZeroNumberStrictFacts"] = 12123394] = "ZeroNumberStrictFacts"; + TypeFacts[TypeFacts["ZeroNumberFacts"] = 12582146] = "ZeroNumberFacts"; + TypeFacts[TypeFacts["NonZeroNumberStrictFacts"] = 7929090] = "NonZeroNumberStrictFacts"; + TypeFacts[TypeFacts["NonZeroNumberFacts"] = 16776450] = "NonZeroNumberFacts"; + TypeFacts[TypeFacts["BaseBigIntStrictFacts"] = 3734276] = "BaseBigIntStrictFacts"; + TypeFacts[TypeFacts["BaseBigIntFacts"] = 12581636] = "BaseBigIntFacts"; + TypeFacts[TypeFacts["BigIntStrictFacts"] = 16317188] = "BigIntStrictFacts"; + TypeFacts[TypeFacts["BigIntFacts"] = 16775940] = "BigIntFacts"; + TypeFacts[TypeFacts["ZeroBigIntStrictFacts"] = 12122884] = "ZeroBigIntStrictFacts"; + TypeFacts[TypeFacts["ZeroBigIntFacts"] = 12581636] = "ZeroBigIntFacts"; + TypeFacts[TypeFacts["NonZeroBigIntStrictFacts"] = 7928580] = "NonZeroBigIntStrictFacts"; + TypeFacts[TypeFacts["NonZeroBigIntFacts"] = 16775940] = "NonZeroBigIntFacts"; + TypeFacts[TypeFacts["BaseBooleanStrictFacts"] = 3733256] = "BaseBooleanStrictFacts"; + TypeFacts[TypeFacts["BaseBooleanFacts"] = 12580616] = "BaseBooleanFacts"; + TypeFacts[TypeFacts["BooleanStrictFacts"] = 16316168] = "BooleanStrictFacts"; + TypeFacts[TypeFacts["BooleanFacts"] = 16774920] = "BooleanFacts"; + TypeFacts[TypeFacts["FalseStrictFacts"] = 12121864] = "FalseStrictFacts"; + TypeFacts[TypeFacts["FalseFacts"] = 12580616] = "FalseFacts"; + TypeFacts[TypeFacts["TrueStrictFacts"] = 7927560] = "TrueStrictFacts"; + TypeFacts[TypeFacts["TrueFacts"] = 16774920] = "TrueFacts"; + TypeFacts[TypeFacts["SymbolStrictFacts"] = 7925520] = "SymbolStrictFacts"; + TypeFacts[TypeFacts["SymbolFacts"] = 16772880] = "SymbolFacts"; + TypeFacts[TypeFacts["ObjectStrictFacts"] = 7888800] = "ObjectStrictFacts"; + TypeFacts[TypeFacts["ObjectFacts"] = 16736160] = "ObjectFacts"; + TypeFacts[TypeFacts["FunctionStrictFacts"] = 7880640] = "FunctionStrictFacts"; + TypeFacts[TypeFacts["FunctionFacts"] = 16728000] = "FunctionFacts"; + TypeFacts[TypeFacts["UndefinedFacts"] = 9830144] = "UndefinedFacts"; + TypeFacts[TypeFacts["NullFacts"] = 9363232] = "NullFacts"; + TypeFacts[TypeFacts["EmptyObjectStrictFacts"] = 16318463] = "EmptyObjectStrictFacts"; + TypeFacts[TypeFacts["EmptyObjectFacts"] = 16777215] = "EmptyObjectFacts"; + })(TypeFacts || (TypeFacts = {})); + var typeofEQFacts = ts.createMapFromTemplate({ + string: 1 /* TypeofEQString */, + number: 2 /* TypeofEQNumber */, + bigint: 4 /* TypeofEQBigInt */, + boolean: 8 /* TypeofEQBoolean */, + symbol: 16 /* TypeofEQSymbol */, + undefined: 65536 /* EQUndefined */, + object: 32 /* TypeofEQObject */, + function: 64 /* TypeofEQFunction */ + }); + var typeofNEFacts = ts.createMapFromTemplate({ + string: 256 /* TypeofNEString */, + number: 512 /* TypeofNENumber */, + bigint: 1024 /* TypeofNEBigInt */, + boolean: 2048 /* TypeofNEBoolean */, + symbol: 4096 /* TypeofNESymbol */, + undefined: 524288 /* NEUndefined */, + object: 8192 /* TypeofNEObject */, + function: 16384 /* TypeofNEFunction */ + }); + var TypeSystemPropertyName; + (function (TypeSystemPropertyName) { + TypeSystemPropertyName[TypeSystemPropertyName["Type"] = 0] = "Type"; + TypeSystemPropertyName[TypeSystemPropertyName["ResolvedBaseConstructorType"] = 1] = "ResolvedBaseConstructorType"; + TypeSystemPropertyName[TypeSystemPropertyName["DeclaredType"] = 2] = "DeclaredType"; + TypeSystemPropertyName[TypeSystemPropertyName["ResolvedReturnType"] = 3] = "ResolvedReturnType"; + TypeSystemPropertyName[TypeSystemPropertyName["ImmediateBaseConstraint"] = 4] = "ImmediateBaseConstraint"; + TypeSystemPropertyName[TypeSystemPropertyName["EnumTagType"] = 5] = "EnumTagType"; + TypeSystemPropertyName[TypeSystemPropertyName["ResolvedTypeArguments"] = 6] = "ResolvedTypeArguments"; + })(TypeSystemPropertyName || (TypeSystemPropertyName = {})); + var CheckMode; + (function (CheckMode) { + CheckMode[CheckMode["Normal"] = 0] = "Normal"; + CheckMode[CheckMode["Contextual"] = 1] = "Contextual"; + CheckMode[CheckMode["Inferential"] = 2] = "Inferential"; + CheckMode[CheckMode["SkipContextSensitive"] = 4] = "SkipContextSensitive"; + CheckMode[CheckMode["SkipGenericFunctions"] = 8] = "SkipGenericFunctions"; + CheckMode[CheckMode["IsForSignatureHelp"] = 16] = "IsForSignatureHelp"; + })(CheckMode || (CheckMode = {})); + var AccessFlags; + (function (AccessFlags) { + AccessFlags[AccessFlags["None"] = 0] = "None"; + AccessFlags[AccessFlags["NoIndexSignatures"] = 1] = "NoIndexSignatures"; + AccessFlags[AccessFlags["Writing"] = 2] = "Writing"; + AccessFlags[AccessFlags["CacheSymbol"] = 4] = "CacheSymbol"; + AccessFlags[AccessFlags["NoTupleBoundsCheck"] = 8] = "NoTupleBoundsCheck"; + })(AccessFlags || (AccessFlags = {})); + var SignatureCheckMode; + (function (SignatureCheckMode) { + SignatureCheckMode[SignatureCheckMode["BivariantCallback"] = 1] = "BivariantCallback"; + SignatureCheckMode[SignatureCheckMode["StrictCallback"] = 2] = "StrictCallback"; + SignatureCheckMode[SignatureCheckMode["IgnoreReturnTypes"] = 4] = "IgnoreReturnTypes"; + SignatureCheckMode[SignatureCheckMode["StrictArity"] = 8] = "StrictArity"; + SignatureCheckMode[SignatureCheckMode["Callback"] = 3] = "Callback"; + })(SignatureCheckMode || (SignatureCheckMode = {})); + var IntersectionState; + (function (IntersectionState) { + IntersectionState[IntersectionState["None"] = 0] = "None"; + IntersectionState[IntersectionState["Source"] = 1] = "Source"; + IntersectionState[IntersectionState["Target"] = 2] = "Target"; + IntersectionState[IntersectionState["PropertyCheck"] = 4] = "PropertyCheck"; + IntersectionState[IntersectionState["InPropertyCheck"] = 8] = "InPropertyCheck"; + })(IntersectionState || (IntersectionState = {})); + var MappedTypeModifiers; + (function (MappedTypeModifiers) { + MappedTypeModifiers[MappedTypeModifiers["IncludeReadonly"] = 1] = "IncludeReadonly"; + MappedTypeModifiers[MappedTypeModifiers["ExcludeReadonly"] = 2] = "ExcludeReadonly"; + MappedTypeModifiers[MappedTypeModifiers["IncludeOptional"] = 4] = "IncludeOptional"; + MappedTypeModifiers[MappedTypeModifiers["ExcludeOptional"] = 8] = "ExcludeOptional"; + })(MappedTypeModifiers || (MappedTypeModifiers = {})); + var ExpandingFlags; + (function (ExpandingFlags) { + ExpandingFlags[ExpandingFlags["None"] = 0] = "None"; + ExpandingFlags[ExpandingFlags["Source"] = 1] = "Source"; + ExpandingFlags[ExpandingFlags["Target"] = 2] = "Target"; + ExpandingFlags[ExpandingFlags["Both"] = 3] = "Both"; + })(ExpandingFlags || (ExpandingFlags = {})); + var MembersOrExportsResolutionKind; + (function (MembersOrExportsResolutionKind) { + MembersOrExportsResolutionKind["resolvedExports"] = "resolvedExports"; + MembersOrExportsResolutionKind["resolvedMembers"] = "resolvedMembers"; + })(MembersOrExportsResolutionKind || (MembersOrExportsResolutionKind = {})); + var UnusedKind; + (function (UnusedKind) { + UnusedKind[UnusedKind["Local"] = 0] = "Local"; + UnusedKind[UnusedKind["Parameter"] = 1] = "Parameter"; + })(UnusedKind || (UnusedKind = {})); + var isNotOverloadAndNotAccessor = ts.and(isNotOverload, isNotAccessor); + var DeclarationMeaning; + (function (DeclarationMeaning) { + DeclarationMeaning[DeclarationMeaning["GetAccessor"] = 1] = "GetAccessor"; + DeclarationMeaning[DeclarationMeaning["SetAccessor"] = 2] = "SetAccessor"; + DeclarationMeaning[DeclarationMeaning["PropertyAssignment"] = 4] = "PropertyAssignment"; + DeclarationMeaning[DeclarationMeaning["Method"] = 8] = "Method"; + DeclarationMeaning[DeclarationMeaning["GetOrSetAccessor"] = 3] = "GetOrSetAccessor"; + DeclarationMeaning[DeclarationMeaning["PropertyAssignmentOrMethod"] = 12] = "PropertyAssignmentOrMethod"; + })(DeclarationMeaning || (DeclarationMeaning = {})); + var DeclarationSpaces; + (function (DeclarationSpaces) { + DeclarationSpaces[DeclarationSpaces["None"] = 0] = "None"; + DeclarationSpaces[DeclarationSpaces["ExportValue"] = 1] = "ExportValue"; + DeclarationSpaces[DeclarationSpaces["ExportType"] = 2] = "ExportType"; + DeclarationSpaces[DeclarationSpaces["ExportNamespace"] = 4] = "ExportNamespace"; + })(DeclarationSpaces || (DeclarationSpaces = {})); + function SymbolLinks() { + } + function NodeLinks() { + this.flags = 0; + } + function getNodeId(node) { + if (!node.id) { + node.id = nextNodeId; + nextNodeId++; + } + return node.id; + } + ts.getNodeId = getNodeId; + function getSymbolId(symbol) { + if (!symbol.id) { + symbol.id = nextSymbolId; + nextSymbolId++; + } + return symbol.id; + } + ts.getSymbolId = getSymbolId; + function isInstantiatedModule(node, preserveConstEnums) { + var moduleState = ts.getModuleInstanceState(node); + return moduleState === 1 /* Instantiated */ || + (preserveConstEnums && moduleState === 2 /* ConstEnumOnly */); + } + ts.isInstantiatedModule = isInstantiatedModule; + function createTypeChecker(host, produceDiagnostics) { + var getPackagesSet = ts.memoize(function () { + var set = ts.createMap(); + host.getSourceFiles().forEach(function (sf) { + if (!sf.resolvedModules) + return; + ts.forEachEntry(sf.resolvedModules, function (r) { + if (r && r.packageId) + set.set(r.packageId.name, true); + }); + }); + return set; + }); + // Cancellation that controls whether or not we can cancel in the middle of type checking. + // In general cancelling is *not* safe for the type checker. We might be in the middle of + // computing something, and we will leave our internals in an inconsistent state. Callers + // who set the cancellation token should catch if a cancellation exception occurs, and + // should throw away and create a new TypeChecker. + // + // Currently we only support setting the cancellation token when getting diagnostics. This + // is because diagnostics can be quite expensive, and we want to allow hosts to bail out if + // they no longer need the information (for example, if the user started editing again). + var cancellationToken; + var requestedExternalEmitHelpers; + var externalHelpersModule; + var Symbol = ts.objectAllocator.getSymbolConstructor(); + var Type = ts.objectAllocator.getTypeConstructor(); + var Signature = ts.objectAllocator.getSignatureConstructor(); + var typeCount = 0; + var symbolCount = 0; + var enumCount = 0; + var totalInstantiationCount = 0; + var instantiationCount = 0; + var instantiationDepth = 0; + var constraintDepth = 0; + var currentNode; + var emptySymbols = ts.createSymbolTable(); + var arrayVariances = [1 /* Covariant */]; + var compilerOptions = host.getCompilerOptions(); + var languageVersion = ts.getEmitScriptTarget(compilerOptions); + var moduleKind = ts.getEmitModuleKind(compilerOptions); + var allowSyntheticDefaultImports = ts.getAllowSyntheticDefaultImports(compilerOptions); + var strictNullChecks = ts.getStrictOptionValue(compilerOptions, "strictNullChecks"); + var strictFunctionTypes = ts.getStrictOptionValue(compilerOptions, "strictFunctionTypes"); + var strictBindCallApply = ts.getStrictOptionValue(compilerOptions, "strictBindCallApply"); + var strictPropertyInitialization = ts.getStrictOptionValue(compilerOptions, "strictPropertyInitialization"); + var noImplicitAny = ts.getStrictOptionValue(compilerOptions, "noImplicitAny"); + var noImplicitThis = ts.getStrictOptionValue(compilerOptions, "noImplicitThis"); + var keyofStringsOnly = !!compilerOptions.keyofStringsOnly; + var freshObjectLiteralFlag = compilerOptions.suppressExcessPropertyErrors ? 0 : 32768 /* FreshLiteral */; + var emitResolver = createResolver(); + var nodeBuilder = createNodeBuilder(); + var globals = ts.createSymbolTable(); + var undefinedSymbol = createSymbol(4 /* Property */, "undefined"); + undefinedSymbol.declarations = []; + var globalThisSymbol = createSymbol(1536 /* Module */, "globalThis", 8 /* Readonly */); + globalThisSymbol.exports = globals; + globalThisSymbol.declarations = []; + globals.set(globalThisSymbol.escapedName, globalThisSymbol); + var argumentsSymbol = createSymbol(4 /* Property */, "arguments"); + var requireSymbol = createSymbol(4 /* Property */, "require"); + /** This will be set during calls to `getResolvedSignature` where services determines an apparent number of arguments greater than what is actually provided. */ + var apparentArgumentCount; + // for public members that accept a Node or one of its subtypes, we must guard against + // synthetic nodes created during transformations by calling `getParseTreeNode`. + // for most of these, we perform the guard only on `checker` to avoid any possible + // extra cost of calling `getParseTreeNode` when calling these functions from inside the + // checker. + var checker = { + getNodeCount: function () { return ts.sum(host.getSourceFiles(), "nodeCount"); }, + getIdentifierCount: function () { return ts.sum(host.getSourceFiles(), "identifierCount"); }, + getSymbolCount: function () { return ts.sum(host.getSourceFiles(), "symbolCount") + symbolCount; }, + getTypeCount: function () { return typeCount; }, + getInstantiationCount: function () { return totalInstantiationCount; }, + getRelationCacheSizes: function () { return ({ + assignable: assignableRelation.size, + identity: identityRelation.size, + subtype: subtypeRelation.size, + strictSubtype: strictSubtypeRelation.size, + }); }, + isUndefinedSymbol: function (symbol) { return symbol === undefinedSymbol; }, + isArgumentsSymbol: function (symbol) { return symbol === argumentsSymbol; }, + isUnknownSymbol: function (symbol) { return symbol === unknownSymbol; }, + getMergedSymbol: getMergedSymbol, + getDiagnostics: getDiagnostics, + getGlobalDiagnostics: getGlobalDiagnostics, + getTypeOfSymbolAtLocation: function (symbol, location) { + location = ts.getParseTreeNode(location); + return location ? getTypeOfSymbolAtLocation(symbol, location) : errorType; + }, + getSymbolsOfParameterPropertyDeclaration: function (parameterIn, parameterName) { + var parameter = ts.getParseTreeNode(parameterIn, ts.isParameter); + if (parameter === undefined) + return ts.Debug.fail("Cannot get symbols of a synthetic parameter that cannot be resolved to a parse-tree node."); + return getSymbolsOfParameterPropertyDeclaration(parameter, ts.escapeLeadingUnderscores(parameterName)); + }, + getDeclaredTypeOfSymbol: getDeclaredTypeOfSymbol, + getPropertiesOfType: getPropertiesOfType, + getPropertyOfType: function (type, name) { return getPropertyOfType(type, ts.escapeLeadingUnderscores(name)); }, + getPrivateIdentifierPropertyOfType: function (leftType, name, location) { + var node = ts.getParseTreeNode(location); + if (!node) { + return undefined; + } + var propName = ts.escapeLeadingUnderscores(name); + var lexicallyScopedIdentifier = lookupSymbolForPrivateIdentifierDeclaration(propName, node); + return lexicallyScopedIdentifier ? getPrivateIdentifierPropertyOfType(leftType, lexicallyScopedIdentifier) : undefined; + }, + getTypeOfPropertyOfType: function (type, name) { return getTypeOfPropertyOfType(type, ts.escapeLeadingUnderscores(name)); }, + getIndexInfoOfType: getIndexInfoOfType, + getSignaturesOfType: getSignaturesOfType, + getIndexTypeOfType: getIndexTypeOfType, + getBaseTypes: getBaseTypes, + getBaseTypeOfLiteralType: getBaseTypeOfLiteralType, + getWidenedType: getWidenedType, + getTypeFromTypeNode: function (nodeIn) { + var node = ts.getParseTreeNode(nodeIn, ts.isTypeNode); + return node ? getTypeFromTypeNode(node) : errorType; + }, + getParameterType: getTypeAtPosition, + getPromisedTypeOfPromise: getPromisedTypeOfPromise, + getReturnTypeOfSignature: getReturnTypeOfSignature, + isNullableType: isNullableType, + getNullableType: getNullableType, + getNonNullableType: getNonNullableType, + getNonOptionalType: removeOptionalTypeMarker, + getTypeArguments: getTypeArguments, + typeToTypeNode: nodeBuilder.typeToTypeNode, + indexInfoToIndexSignatureDeclaration: nodeBuilder.indexInfoToIndexSignatureDeclaration, + signatureToSignatureDeclaration: nodeBuilder.signatureToSignatureDeclaration, + symbolToEntityName: nodeBuilder.symbolToEntityName, + symbolToExpression: nodeBuilder.symbolToExpression, + symbolToTypeParameterDeclarations: nodeBuilder.symbolToTypeParameterDeclarations, + symbolToParameterDeclaration: nodeBuilder.symbolToParameterDeclaration, + typeParameterToDeclaration: nodeBuilder.typeParameterToDeclaration, + getSymbolsInScope: function (location, meaning) { + location = ts.getParseTreeNode(location); + return location ? getSymbolsInScope(location, meaning) : []; + }, + getSymbolAtLocation: function (node) { + node = ts.getParseTreeNode(node); + // set ignoreErrors: true because any lookups invoked by the API shouldn't cause any new errors + return node ? getSymbolAtLocation(node, /*ignoreErrors*/ true) : undefined; + }, + getShorthandAssignmentValueSymbol: function (node) { + node = ts.getParseTreeNode(node); + return node ? getShorthandAssignmentValueSymbol(node) : undefined; + }, + getExportSpecifierLocalTargetSymbol: function (nodeIn) { + var node = ts.getParseTreeNode(nodeIn, ts.isExportSpecifier); + return node ? getExportSpecifierLocalTargetSymbol(node) : undefined; + }, + getExportSymbolOfSymbol: function (symbol) { + return getMergedSymbol(symbol.exportSymbol || symbol); + }, + getTypeAtLocation: function (node) { + node = ts.getParseTreeNode(node); + return node ? getTypeOfNode(node) : errorType; + }, + getTypeOfAssignmentPattern: function (nodeIn) { + var node = ts.getParseTreeNode(nodeIn, ts.isAssignmentPattern); + return node && getTypeOfAssignmentPattern(node) || errorType; + }, + getPropertySymbolOfDestructuringAssignment: function (locationIn) { + var location = ts.getParseTreeNode(locationIn, ts.isIdentifier); + return location ? getPropertySymbolOfDestructuringAssignment(location) : undefined; + }, + signatureToString: function (signature, enclosingDeclaration, flags, kind) { + return signatureToString(signature, ts.getParseTreeNode(enclosingDeclaration), flags, kind); + }, + typeToString: function (type, enclosingDeclaration, flags) { + return typeToString(type, ts.getParseTreeNode(enclosingDeclaration), flags); + }, + symbolToString: function (symbol, enclosingDeclaration, meaning, flags) { + return symbolToString(symbol, ts.getParseTreeNode(enclosingDeclaration), meaning, flags); + }, + typePredicateToString: function (predicate, enclosingDeclaration, flags) { + return typePredicateToString(predicate, ts.getParseTreeNode(enclosingDeclaration), flags); + }, + writeSignature: function (signature, enclosingDeclaration, flags, kind, writer) { + return signatureToString(signature, ts.getParseTreeNode(enclosingDeclaration), flags, kind, writer); + }, + writeType: function (type, enclosingDeclaration, flags, writer) { + return typeToString(type, ts.getParseTreeNode(enclosingDeclaration), flags, writer); + }, + writeSymbol: function (symbol, enclosingDeclaration, meaning, flags, writer) { + return symbolToString(symbol, ts.getParseTreeNode(enclosingDeclaration), meaning, flags, writer); + }, + writeTypePredicate: function (predicate, enclosingDeclaration, flags, writer) { + return typePredicateToString(predicate, ts.getParseTreeNode(enclosingDeclaration), flags, writer); + }, + getAugmentedPropertiesOfType: getAugmentedPropertiesOfType, + getRootSymbols: getRootSymbols, + getContextualType: function (nodeIn, contextFlags) { + var node = ts.getParseTreeNode(nodeIn, ts.isExpression); + if (!node) { + return undefined; + } + var containingCall = ts.findAncestor(node, ts.isCallLikeExpression); + var containingCallResolvedSignature = containingCall && getNodeLinks(containingCall).resolvedSignature; + if (contextFlags & 4 /* Completions */ && containingCall) { + var toMarkSkip = node; + do { + getNodeLinks(toMarkSkip).skipDirectInference = true; + toMarkSkip = toMarkSkip.parent; + } while (toMarkSkip && toMarkSkip !== containingCall); + getNodeLinks(containingCall).resolvedSignature = undefined; + } + var result = getContextualType(node, contextFlags); + if (contextFlags & 4 /* Completions */ && containingCall) { + var toMarkSkip = node; + do { + getNodeLinks(toMarkSkip).skipDirectInference = undefined; + toMarkSkip = toMarkSkip.parent; + } while (toMarkSkip && toMarkSkip !== containingCall); + getNodeLinks(containingCall).resolvedSignature = containingCallResolvedSignature; + } + return result; + }, + getContextualTypeForObjectLiteralElement: function (nodeIn) { + var node = ts.getParseTreeNode(nodeIn, ts.isObjectLiteralElementLike); + return node ? getContextualTypeForObjectLiteralElement(node) : undefined; + }, + getContextualTypeForArgumentAtIndex: function (nodeIn, argIndex) { + var node = ts.getParseTreeNode(nodeIn, ts.isCallLikeExpression); + return node && getContextualTypeForArgumentAtIndex(node, argIndex); + }, + getContextualTypeForJsxAttribute: function (nodeIn) { + var node = ts.getParseTreeNode(nodeIn, ts.isJsxAttributeLike); + return node && getContextualTypeForJsxAttribute(node); + }, + isContextSensitive: isContextSensitive, + getFullyQualifiedName: getFullyQualifiedName, + getResolvedSignature: function (node, candidatesOutArray, argumentCount) { + return getResolvedSignatureWorker(node, candidatesOutArray, argumentCount, 0 /* Normal */); + }, + getResolvedSignatureForSignatureHelp: function (node, candidatesOutArray, argumentCount) { + return getResolvedSignatureWorker(node, candidatesOutArray, argumentCount, 16 /* IsForSignatureHelp */); + }, + getExpandedParameters: getExpandedParameters, + hasEffectiveRestParameter: hasEffectiveRestParameter, + getConstantValue: function (nodeIn) { + var node = ts.getParseTreeNode(nodeIn, canHaveConstantValue); + return node ? getConstantValue(node) : undefined; + }, + isValidPropertyAccess: function (nodeIn, propertyName) { + var node = ts.getParseTreeNode(nodeIn, ts.isPropertyAccessOrQualifiedNameOrImportTypeNode); + return !!node && isValidPropertyAccess(node, ts.escapeLeadingUnderscores(propertyName)); + }, + isValidPropertyAccessForCompletions: function (nodeIn, type, property) { + var node = ts.getParseTreeNode(nodeIn, ts.isPropertyAccessExpression); + return !!node && isValidPropertyAccessForCompletions(node, type, property); + }, + getSignatureFromDeclaration: function (declarationIn) { + var declaration = ts.getParseTreeNode(declarationIn, ts.isFunctionLike); + return declaration ? getSignatureFromDeclaration(declaration) : undefined; + }, + isImplementationOfOverload: function (node) { + var parsed = ts.getParseTreeNode(node, ts.isFunctionLike); + return parsed ? isImplementationOfOverload(parsed) : undefined; + }, + getImmediateAliasedSymbol: getImmediateAliasedSymbol, + getAliasedSymbol: resolveAlias, + getEmitResolver: getEmitResolver, + getExportsOfModule: getExportsOfModuleAsArray, + getExportsAndPropertiesOfModule: getExportsAndPropertiesOfModule, + getSymbolWalker: ts.createGetSymbolWalker(getRestTypeOfSignature, getTypePredicateOfSignature, getReturnTypeOfSignature, getBaseTypes, resolveStructuredTypeMembers, getTypeOfSymbol, getResolvedSymbol, getIndexTypeOfStructuredType, getConstraintOfTypeParameter, ts.getFirstIdentifier, getTypeArguments), + getAmbientModules: getAmbientModules, + getJsxIntrinsicTagNamesAt: getJsxIntrinsicTagNamesAt, + isOptionalParameter: function (nodeIn) { + var node = ts.getParseTreeNode(nodeIn, ts.isParameter); + return node ? isOptionalParameter(node) : false; + }, + tryGetMemberInModuleExports: function (name, symbol) { return tryGetMemberInModuleExports(ts.escapeLeadingUnderscores(name), symbol); }, + tryGetMemberInModuleExportsAndProperties: function (name, symbol) { return tryGetMemberInModuleExportsAndProperties(ts.escapeLeadingUnderscores(name), symbol); }, + tryFindAmbientModuleWithoutAugmentations: function (moduleName) { + // we deliberately exclude augmentations + // since we are only interested in declarations of the module itself + return tryFindAmbientModule(moduleName, /*withAugmentations*/ false); + }, + getApparentType: getApparentType, + getUnionType: getUnionType, + isTypeAssignableTo: isTypeAssignableTo, + createAnonymousType: createAnonymousType, + createSignature: createSignature, + createSymbol: createSymbol, + createIndexInfo: createIndexInfo, + getAnyType: function () { return anyType; }, + getStringType: function () { return stringType; }, + getNumberType: function () { return numberType; }, + createPromiseType: createPromiseType, + createArrayType: createArrayType, + getElementTypeOfArrayType: getElementTypeOfArrayType, + getBooleanType: function () { return booleanType; }, + getFalseType: function (fresh) { return fresh ? falseType : regularFalseType; }, + getTrueType: function (fresh) { return fresh ? trueType : regularTrueType; }, + getVoidType: function () { return voidType; }, + getUndefinedType: function () { return undefinedType; }, + getNullType: function () { return nullType; }, + getESSymbolType: function () { return esSymbolType; }, + getNeverType: function () { return neverType; }, + getOptionalType: function () { return optionalType; }, + isSymbolAccessible: isSymbolAccessible, + isArrayType: isArrayType, + isTupleType: isTupleType, + isArrayLikeType: isArrayLikeType, + isTypeInvalidDueToUnionDiscriminant: isTypeInvalidDueToUnionDiscriminant, + getAllPossiblePropertiesOfTypes: getAllPossiblePropertiesOfTypes, + getSuggestedSymbolForNonexistentProperty: getSuggestedSymbolForNonexistentProperty, + getSuggestionForNonexistentProperty: getSuggestionForNonexistentProperty, + getSuggestedSymbolForNonexistentSymbol: function (location, name, meaning) { return getSuggestedSymbolForNonexistentSymbol(location, ts.escapeLeadingUnderscores(name), meaning); }, + getSuggestionForNonexistentSymbol: function (location, name, meaning) { return getSuggestionForNonexistentSymbol(location, ts.escapeLeadingUnderscores(name), meaning); }, + getSuggestedSymbolForNonexistentModule: getSuggestedSymbolForNonexistentModule, + getSuggestionForNonexistentExport: getSuggestionForNonexistentExport, + getBaseConstraintOfType: getBaseConstraintOfType, + getDefaultFromTypeParameter: function (type) { return type && type.flags & 262144 /* TypeParameter */ ? getDefaultFromTypeParameter(type) : undefined; }, + resolveName: function (name, location, meaning, excludeGlobals) { + return resolveName(location, ts.escapeLeadingUnderscores(name), meaning, /*nameNotFoundMessage*/ undefined, /*nameArg*/ undefined, /*isUse*/ false, excludeGlobals); + }, + getJsxNamespace: function (n) { return ts.unescapeLeadingUnderscores(getJsxNamespace(n)); }, + getAccessibleSymbolChain: getAccessibleSymbolChain, + getTypePredicateOfSignature: getTypePredicateOfSignature, + resolveExternalModuleName: function (moduleSpecifier) { + return resolveExternalModuleName(moduleSpecifier, moduleSpecifier, /*ignoreErrors*/ true); + }, + resolveExternalModuleSymbol: resolveExternalModuleSymbol, + tryGetThisTypeAt: function (node, includeGlobalThis) { + node = ts.getParseTreeNode(node); + return node && tryGetThisTypeAt(node, includeGlobalThis); + }, + getTypeArgumentConstraint: function (nodeIn) { + var node = ts.getParseTreeNode(nodeIn, ts.isTypeNode); + return node && getTypeArgumentConstraint(node); + }, + getSuggestionDiagnostics: function (file, ct) { + if (ts.skipTypeChecking(file, compilerOptions, host)) { + return ts.emptyArray; + } + var diagnostics; + try { + // Record the cancellation token so it can be checked later on during checkSourceElement. + // Do this in a finally block so we can ensure that it gets reset back to nothing after + // this call is done. + cancellationToken = ct; + // Ensure file is type checked + checkSourceFile(file); + ts.Debug.assert(!!(getNodeLinks(file).flags & 1 /* TypeChecked */)); + diagnostics = ts.addRange(diagnostics, suggestionDiagnostics.getDiagnostics(file.fileName)); + checkUnusedIdentifiers(getPotentiallyUnusedIdentifiers(file), function (containingNode, kind, diag) { + if (!ts.containsParseError(containingNode) && !unusedIsError(kind, !!(containingNode.flags & 8388608 /* Ambient */))) { + (diagnostics || (diagnostics = [])).push(__assign(__assign({}, diag), { category: ts.DiagnosticCategory.Suggestion })); + } + }); + return diagnostics || ts.emptyArray; + } + finally { + cancellationToken = undefined; + } + }, + runWithCancellationToken: function (token, callback) { + try { + cancellationToken = token; + return callback(checker); + } + finally { + cancellationToken = undefined; + } + }, + getLocalTypeParametersOfClassOrInterfaceOrTypeAlias: getLocalTypeParametersOfClassOrInterfaceOrTypeAlias, + isDeclarationVisible: isDeclarationVisible, + }; + function getResolvedSignatureWorker(nodeIn, candidatesOutArray, argumentCount, checkMode) { + var node = ts.getParseTreeNode(nodeIn, ts.isCallLikeExpression); + apparentArgumentCount = argumentCount; + var res = node ? getResolvedSignature(node, candidatesOutArray, checkMode) : undefined; + apparentArgumentCount = undefined; + return res; + } + var tupleTypes = ts.createMap(); + var unionTypes = ts.createMap(); + var intersectionTypes = ts.createMap(); + var literalTypes = ts.createMap(); + var indexedAccessTypes = ts.createMap(); + var substitutionTypes = ts.createMap(); + var evolvingArrayTypes = []; + var undefinedProperties = ts.createMap(); + var unknownSymbol = createSymbol(4 /* Property */, "unknown"); + var resolvingSymbol = createSymbol(0, "__resolving__" /* Resolving */); + var anyType = createIntrinsicType(1 /* Any */, "any"); + var autoType = createIntrinsicType(1 /* Any */, "any"); + var wildcardType = createIntrinsicType(1 /* Any */, "any"); + var errorType = createIntrinsicType(1 /* Any */, "error"); + var nonInferrableAnyType = createIntrinsicType(1 /* Any */, "any", 524288 /* ContainsWideningType */); + var unknownType = createIntrinsicType(2 /* Unknown */, "unknown"); + var undefinedType = createIntrinsicType(32768 /* Undefined */, "undefined"); + var undefinedWideningType = strictNullChecks ? undefinedType : createIntrinsicType(32768 /* Undefined */, "undefined", 524288 /* ContainsWideningType */); + var optionalType = createIntrinsicType(32768 /* Undefined */, "undefined"); + var nullType = createIntrinsicType(65536 /* Null */, "null"); + var nullWideningType = strictNullChecks ? nullType : createIntrinsicType(65536 /* Null */, "null", 524288 /* ContainsWideningType */); + var stringType = createIntrinsicType(4 /* String */, "string"); + var numberType = createIntrinsicType(8 /* Number */, "number"); + var bigintType = createIntrinsicType(64 /* BigInt */, "bigint"); + var falseType = createIntrinsicType(512 /* BooleanLiteral */, "false"); + var regularFalseType = createIntrinsicType(512 /* BooleanLiteral */, "false"); + var trueType = createIntrinsicType(512 /* BooleanLiteral */, "true"); + var regularTrueType = createIntrinsicType(512 /* BooleanLiteral */, "true"); + trueType.regularType = regularTrueType; + trueType.freshType = trueType; + regularTrueType.regularType = regularTrueType; + regularTrueType.freshType = trueType; + falseType.regularType = regularFalseType; + falseType.freshType = falseType; + regularFalseType.regularType = regularFalseType; + regularFalseType.freshType = falseType; + var booleanType = createBooleanType([regularFalseType, regularTrueType]); + // Also mark all combinations of fresh/regular booleans as "Boolean" so they print as `boolean` instead of `true | false` + // (The union is cached, so simply doing the marking here is sufficient) + createBooleanType([regularFalseType, trueType]); + createBooleanType([falseType, regularTrueType]); + createBooleanType([falseType, trueType]); + var esSymbolType = createIntrinsicType(4096 /* ESSymbol */, "symbol"); + var voidType = createIntrinsicType(16384 /* Void */, "void"); + var neverType = createIntrinsicType(131072 /* Never */, "never"); + var silentNeverType = createIntrinsicType(131072 /* Never */, "never"); + var nonInferrableType = createIntrinsicType(131072 /* Never */, "never", 2097152 /* NonInferrableType */); + var implicitNeverType = createIntrinsicType(131072 /* Never */, "never"); + var unreachableNeverType = createIntrinsicType(131072 /* Never */, "never"); + var nonPrimitiveType = createIntrinsicType(67108864 /* NonPrimitive */, "object"); + var stringNumberSymbolType = getUnionType([stringType, numberType, esSymbolType]); + var keyofConstraintType = keyofStringsOnly ? stringType : stringNumberSymbolType; + var numberOrBigIntType = getUnionType([numberType, bigintType]); + var restrictiveMapper = makeFunctionTypeMapper(function (t) { return t.flags & 262144 /* TypeParameter */ ? getRestrictiveTypeParameter(t) : t; }); + var permissiveMapper = makeFunctionTypeMapper(function (t) { return t.flags & 262144 /* TypeParameter */ ? wildcardType : t; }); + var emptyObjectType = createAnonymousType(undefined, emptySymbols, ts.emptyArray, ts.emptyArray, undefined, undefined); + var emptyJsxObjectType = createAnonymousType(undefined, emptySymbols, ts.emptyArray, ts.emptyArray, undefined, undefined); + emptyJsxObjectType.objectFlags |= 4096 /* JsxAttributes */; + var emptyTypeLiteralSymbol = createSymbol(2048 /* TypeLiteral */, "__type" /* Type */); + emptyTypeLiteralSymbol.members = ts.createSymbolTable(); + var emptyTypeLiteralType = createAnonymousType(emptyTypeLiteralSymbol, emptySymbols, ts.emptyArray, ts.emptyArray, undefined, undefined); + var emptyGenericType = createAnonymousType(undefined, emptySymbols, ts.emptyArray, ts.emptyArray, undefined, undefined); + emptyGenericType.instantiations = ts.createMap(); + var anyFunctionType = createAnonymousType(undefined, emptySymbols, ts.emptyArray, ts.emptyArray, undefined, undefined); + // The anyFunctionType contains the anyFunctionType by definition. The flag is further propagated + // in getPropagatingFlagsOfTypes, and it is checked in inferFromTypes. + anyFunctionType.objectFlags |= 2097152 /* NonInferrableType */; + var noConstraintType = createAnonymousType(undefined, emptySymbols, ts.emptyArray, ts.emptyArray, undefined, undefined); + var circularConstraintType = createAnonymousType(undefined, emptySymbols, ts.emptyArray, ts.emptyArray, undefined, undefined); + var resolvingDefaultType = createAnonymousType(undefined, emptySymbols, ts.emptyArray, ts.emptyArray, undefined, undefined); + var markerSuperType = createTypeParameter(); + var markerSubType = createTypeParameter(); + markerSubType.constraint = markerSuperType; + var markerOtherType = createTypeParameter(); + var noTypePredicate = createTypePredicate(1 /* Identifier */, "<>", 0, anyType); + var anySignature = createSignature(undefined, undefined, undefined, ts.emptyArray, anyType, /*resolvedTypePredicate*/ undefined, 0, 0 /* None */); + var unknownSignature = createSignature(undefined, undefined, undefined, ts.emptyArray, errorType, /*resolvedTypePredicate*/ undefined, 0, 0 /* None */); + var resolvingSignature = createSignature(undefined, undefined, undefined, ts.emptyArray, anyType, /*resolvedTypePredicate*/ undefined, 0, 0 /* None */); + var silentNeverSignature = createSignature(undefined, undefined, undefined, ts.emptyArray, silentNeverType, /*resolvedTypePredicate*/ undefined, 0, 0 /* None */); + var enumNumberIndexInfo = createIndexInfo(stringType, /*isReadonly*/ true); + var iterationTypesCache = ts.createMap(); // cache for common IterationTypes instances + var noIterationTypes = { + get yieldType() { return ts.Debug.fail("Not supported"); }, + get returnType() { return ts.Debug.fail("Not supported"); }, + get nextType() { return ts.Debug.fail("Not supported"); }, + }; + var anyIterationTypes = createIterationTypes(anyType, anyType, anyType); + var anyIterationTypesExceptNext = createIterationTypes(anyType, anyType, unknownType); + var defaultIterationTypes = createIterationTypes(neverType, anyType, undefinedType); // default iteration types for `Iterator`. + var asyncIterationTypesResolver = { + iterableCacheKey: "iterationTypesOfAsyncIterable", + iteratorCacheKey: "iterationTypesOfAsyncIterator", + iteratorSymbolName: "asyncIterator", + getGlobalIteratorType: getGlobalAsyncIteratorType, + getGlobalIterableType: getGlobalAsyncIterableType, + getGlobalIterableIteratorType: getGlobalAsyncIterableIteratorType, + getGlobalGeneratorType: getGlobalAsyncGeneratorType, + resolveIterationType: getAwaitedType, + mustHaveANextMethodDiagnostic: ts.Diagnostics.An_async_iterator_must_have_a_next_method, + mustBeAMethodDiagnostic: ts.Diagnostics.The_0_property_of_an_async_iterator_must_be_a_method, + mustHaveAValueDiagnostic: ts.Diagnostics.The_type_returned_by_the_0_method_of_an_async_iterator_must_be_a_promise_for_a_type_with_a_value_property, + }; + var syncIterationTypesResolver = { + iterableCacheKey: "iterationTypesOfIterable", + iteratorCacheKey: "iterationTypesOfIterator", + iteratorSymbolName: "iterator", + getGlobalIteratorType: getGlobalIteratorType, + getGlobalIterableType: getGlobalIterableType, + getGlobalIterableIteratorType: getGlobalIterableIteratorType, + getGlobalGeneratorType: getGlobalGeneratorType, + resolveIterationType: function (type, _errorNode) { return type; }, + mustHaveANextMethodDiagnostic: ts.Diagnostics.An_iterator_must_have_a_next_method, + mustBeAMethodDiagnostic: ts.Diagnostics.The_0_property_of_an_iterator_must_be_a_method, + mustHaveAValueDiagnostic: ts.Diagnostics.The_type_returned_by_the_0_method_of_an_iterator_must_have_a_value_property, + }; + /** Key is "/path/to/a.ts|/path/to/b.ts". */ + var amalgamatedDuplicates; + var reverseMappedCache = ts.createMap(); + var ambientModulesCache; + /** + * List of every ambient module with a "*" wildcard. + * Unlike other ambient modules, these can't be stored in `globals` because symbol tables only deal with exact matches. + * This is only used if there is no exact match. + */ + var patternAmbientModules; + var patternAmbientModuleAugmentations; + var globalObjectType; + var globalFunctionType; + var globalCallableFunctionType; + var globalNewableFunctionType; + var globalArrayType; + var globalReadonlyArrayType; + var globalStringType; + var globalNumberType; + var globalBooleanType; + var globalRegExpType; + var globalThisType; + var anyArrayType; + var autoArrayType; + var anyReadonlyArrayType; + var deferredGlobalNonNullableTypeAlias; + // The library files are only loaded when the feature is used. + // This allows users to just specify library files they want to used through --lib + // and they will not get an error from not having unrelated library files + var deferredGlobalESSymbolConstructorSymbol; + var deferredGlobalESSymbolType; + var deferredGlobalTypedPropertyDescriptorType; + var deferredGlobalPromiseType; + var deferredGlobalPromiseLikeType; + var deferredGlobalPromiseConstructorSymbol; + var deferredGlobalPromiseConstructorLikeType; + var deferredGlobalIterableType; + var deferredGlobalIteratorType; + var deferredGlobalIterableIteratorType; + var deferredGlobalGeneratorType; + var deferredGlobalIteratorYieldResultType; + var deferredGlobalIteratorReturnResultType; + var deferredGlobalAsyncIterableType; + var deferredGlobalAsyncIteratorType; + var deferredGlobalAsyncIterableIteratorType; + var deferredGlobalAsyncGeneratorType; + var deferredGlobalTemplateStringsArrayType; + var deferredGlobalImportMetaType; + var deferredGlobalExtractSymbol; + var deferredGlobalOmitSymbol; + var deferredGlobalBigIntType; + var allPotentiallyUnusedIdentifiers = ts.createMap(); // key is file name + var flowLoopStart = 0; + var flowLoopCount = 0; + var sharedFlowCount = 0; + var flowAnalysisDisabled = false; + var flowInvocationCount = 0; + var lastFlowNode; + var lastFlowNodeReachable; + var flowTypeCache; + var emptyStringType = getLiteralType(""); + var zeroType = getLiteralType(0); + var zeroBigIntType = getLiteralType({ negative: false, base10Value: "0" }); + var resolutionTargets = []; + var resolutionResults = []; + var resolutionPropertyNames = []; + var suggestionCount = 0; + var maximumSuggestionCount = 10; + var mergedSymbols = []; + var symbolLinks = []; + var nodeLinks = []; + var flowLoopCaches = []; + var flowLoopNodes = []; + var flowLoopKeys = []; + var flowLoopTypes = []; + var sharedFlowNodes = []; + var sharedFlowTypes = []; + var flowNodeReachable = []; + var potentialThisCollisions = []; + var potentialNewTargetCollisions = []; + var potentialWeakMapCollisions = []; + var awaitedTypeStack = []; + var diagnostics = ts.createDiagnosticCollection(); + var suggestionDiagnostics = ts.createDiagnosticCollection(); + var typeofTypesByName = ts.createMapFromTemplate({ + string: stringType, + number: numberType, + bigint: bigintType, + boolean: booleanType, + symbol: esSymbolType, + undefined: undefinedType + }); + var typeofType = createTypeofType(); + var _jsxNamespace; + var _jsxFactoryEntity; + var outofbandVarianceMarkerHandler; + var subtypeRelation = ts.createMap(); + var strictSubtypeRelation = ts.createMap(); + var assignableRelation = ts.createMap(); + var comparableRelation = ts.createMap(); + var identityRelation = ts.createMap(); + var enumRelation = ts.createMap(); + var builtinGlobals = ts.createSymbolTable(); + builtinGlobals.set(undefinedSymbol.escapedName, undefinedSymbol); + initializeTypeChecker(); + return checker; + function getJsxNamespace(location) { + if (location) { + var file = ts.getSourceFileOfNode(location); + if (file) { + if (file.localJsxNamespace) { + return file.localJsxNamespace; + } + var jsxPragma = file.pragmas.get("jsx"); + if (jsxPragma) { + var chosenpragma = ts.isArray(jsxPragma) ? jsxPragma[0] : jsxPragma; + file.localJsxFactory = ts.parseIsolatedEntityName(chosenpragma.arguments.factory, languageVersion); + ts.visitNode(file.localJsxFactory, markAsSynthetic); + if (file.localJsxFactory) { + return file.localJsxNamespace = ts.getFirstIdentifier(file.localJsxFactory).escapedText; + } + } + } + } + if (!_jsxNamespace) { + _jsxNamespace = "React"; + if (compilerOptions.jsxFactory) { + _jsxFactoryEntity = ts.parseIsolatedEntityName(compilerOptions.jsxFactory, languageVersion); + ts.visitNode(_jsxFactoryEntity, markAsSynthetic); + if (_jsxFactoryEntity) { + _jsxNamespace = ts.getFirstIdentifier(_jsxFactoryEntity).escapedText; + } + } + else if (compilerOptions.reactNamespace) { + _jsxNamespace = ts.escapeLeadingUnderscores(compilerOptions.reactNamespace); + } + } + if (!_jsxFactoryEntity) { + _jsxFactoryEntity = ts.createQualifiedName(ts.createIdentifier(ts.unescapeLeadingUnderscores(_jsxNamespace)), "createElement"); + } + return _jsxNamespace; + function markAsSynthetic(node) { + node.pos = -1; + node.end = -1; + return ts.visitEachChild(node, markAsSynthetic, ts.nullTransformationContext); + } + } + function getEmitResolver(sourceFile, cancellationToken) { + // Ensure we have all the type information in place for this file so that all the + // emitter questions of this resolver will return the right information. + getDiagnostics(sourceFile, cancellationToken); + return emitResolver; + } + function lookupOrIssueError(location, message, arg0, arg1, arg2, arg3) { + var diagnostic = location + ? ts.createDiagnosticForNode(location, message, arg0, arg1, arg2, arg3) + : ts.createCompilerDiagnostic(message, arg0, arg1, arg2, arg3); + var existing = diagnostics.lookup(diagnostic); + if (existing) { + return existing; + } + else { + diagnostics.add(diagnostic); + return diagnostic; + } + } + function error(location, message, arg0, arg1, arg2, arg3) { + var diagnostic = location + ? ts.createDiagnosticForNode(location, message, arg0, arg1, arg2, arg3) + : ts.createCompilerDiagnostic(message, arg0, arg1, arg2, arg3); + diagnostics.add(diagnostic); + return diagnostic; + } + function addErrorOrSuggestion(isError, diagnostic) { + if (isError) { + diagnostics.add(diagnostic); + } + else { + suggestionDiagnostics.add(__assign(__assign({}, diagnostic), { category: ts.DiagnosticCategory.Suggestion })); + } + } + function errorOrSuggestion(isError, location, message, arg0, arg1, arg2, arg3) { + addErrorOrSuggestion(isError, "message" in message ? ts.createDiagnosticForNode(location, message, arg0, arg1, arg2, arg3) : ts.createDiagnosticForNodeFromMessageChain(location, message)); // eslint-disable-line no-in-operator + } + function errorAndMaybeSuggestAwait(location, maybeMissingAwait, message, arg0, arg1, arg2, arg3) { + var diagnostic = error(location, message, arg0, arg1, arg2, arg3); + if (maybeMissingAwait) { + var related = ts.createDiagnosticForNode(location, ts.Diagnostics.Did_you_forget_to_use_await); + ts.addRelatedInfo(diagnostic, related); + } + return diagnostic; + } + function createSymbol(flags, name, checkFlags) { + symbolCount++; + var symbol = (new Symbol(flags | 33554432 /* Transient */, name)); + symbol.checkFlags = checkFlags || 0; + return symbol; + } + function getExcludedSymbolFlags(flags) { + var result = 0; + if (flags & 2 /* BlockScopedVariable */) + result |= 111551 /* BlockScopedVariableExcludes */; + if (flags & 1 /* FunctionScopedVariable */) + result |= 111550 /* FunctionScopedVariableExcludes */; + if (flags & 4 /* Property */) + result |= 0 /* PropertyExcludes */; + if (flags & 8 /* EnumMember */) + result |= 900095 /* EnumMemberExcludes */; + if (flags & 16 /* Function */) + result |= 110991 /* FunctionExcludes */; + if (flags & 32 /* Class */) + result |= 899503 /* ClassExcludes */; + if (flags & 64 /* Interface */) + result |= 788872 /* InterfaceExcludes */; + if (flags & 256 /* RegularEnum */) + result |= 899327 /* RegularEnumExcludes */; + if (flags & 128 /* ConstEnum */) + result |= 899967 /* ConstEnumExcludes */; + if (flags & 512 /* ValueModule */) + result |= 110735 /* ValueModuleExcludes */; + if (flags & 8192 /* Method */) + result |= 103359 /* MethodExcludes */; + if (flags & 32768 /* GetAccessor */) + result |= 46015 /* GetAccessorExcludes */; + if (flags & 65536 /* SetAccessor */) + result |= 78783 /* SetAccessorExcludes */; + if (flags & 262144 /* TypeParameter */) + result |= 526824 /* TypeParameterExcludes */; + if (flags & 524288 /* TypeAlias */) + result |= 788968 /* TypeAliasExcludes */; + if (flags & 2097152 /* Alias */) + result |= 2097152 /* AliasExcludes */; + return result; + } + function recordMergedSymbol(target, source) { + if (!source.mergeId) { + source.mergeId = nextMergeId; + nextMergeId++; + } + mergedSymbols[source.mergeId] = target; + } + function cloneSymbol(symbol) { + var result = createSymbol(symbol.flags, symbol.escapedName); + result.declarations = symbol.declarations ? symbol.declarations.slice() : []; + result.parent = symbol.parent; + if (symbol.valueDeclaration) + result.valueDeclaration = symbol.valueDeclaration; + if (symbol.constEnumOnlyModule) + result.constEnumOnlyModule = true; + if (symbol.members) + result.members = ts.cloneMap(symbol.members); + if (symbol.exports) + result.exports = ts.cloneMap(symbol.exports); + recordMergedSymbol(result, symbol); + return result; + } + /** + * Note: if target is transient, then it is mutable, and mergeSymbol with both mutate and return it. + * If target is not transient, mergeSymbol will produce a transient clone, mutate that and return it. + */ + function mergeSymbol(target, source, unidirectional) { + if (unidirectional === void 0) { unidirectional = false; } + if (!(target.flags & getExcludedSymbolFlags(source.flags)) || + (source.flags | target.flags) & 67108864 /* Assignment */) { + if (source === target) { + // This can happen when an export assigned namespace exports something also erroneously exported at the top level + // See `declarationFileNoCrashOnExtraExportModifier` for an example + return target; + } + if (!(target.flags & 33554432 /* Transient */)) { + var resolvedTarget = resolveSymbol(target); + if (resolvedTarget === unknownSymbol) { + return source; + } + target = cloneSymbol(resolvedTarget); + } + // Javascript static-property-assignment declarations always merge, even though they are also values + if (source.flags & 512 /* ValueModule */ && target.flags & 512 /* ValueModule */ && target.constEnumOnlyModule && !source.constEnumOnlyModule) { + // reset flag when merging instantiated module into value module that has only const enums + target.constEnumOnlyModule = false; + } + target.flags |= source.flags; + if (source.valueDeclaration) { + ts.setValueDeclaration(target, source.valueDeclaration); + } + ts.addRange(target.declarations, source.declarations); + if (source.members) { + if (!target.members) + target.members = ts.createSymbolTable(); + mergeSymbolTable(target.members, source.members, unidirectional); + } + if (source.exports) { + if (!target.exports) + target.exports = ts.createSymbolTable(); + mergeSymbolTable(target.exports, source.exports, unidirectional); + } + if (!unidirectional) { + recordMergedSymbol(target, source); + } + } + else if (target.flags & 1024 /* NamespaceModule */) { + // Do not report an error when merging `var globalThis` with the built-in `globalThis`, + // as we will already report a "Declaration name conflicts..." error, and this error + // won't make much sense. + if (target !== globalThisSymbol) { + error(ts.getNameOfDeclaration(source.declarations[0]), ts.Diagnostics.Cannot_augment_module_0_with_value_exports_because_it_resolves_to_a_non_module_entity, symbolToString(target)); + } + } + else { // error + var isEitherEnum = !!(target.flags & 384 /* Enum */ || source.flags & 384 /* Enum */); + var isEitherBlockScoped_1 = !!(target.flags & 2 /* BlockScopedVariable */ || source.flags & 2 /* BlockScopedVariable */); + var message = isEitherEnum + ? ts.Diagnostics.Enum_declarations_can_only_merge_with_namespace_or_other_enum_declarations + : isEitherBlockScoped_1 + ? ts.Diagnostics.Cannot_redeclare_block_scoped_variable_0 + : ts.Diagnostics.Duplicate_identifier_0; + var sourceSymbolFile = source.declarations && ts.getSourceFileOfNode(source.declarations[0]); + var targetSymbolFile = target.declarations && ts.getSourceFileOfNode(target.declarations[0]); + var symbolName_1 = symbolToString(source); + // Collect top-level duplicate identifier errors into one mapping, so we can then merge their diagnostics if there are a bunch + if (sourceSymbolFile && targetSymbolFile && amalgamatedDuplicates && !isEitherEnum && sourceSymbolFile !== targetSymbolFile) { + var firstFile_1 = ts.comparePaths(sourceSymbolFile.path, targetSymbolFile.path) === -1 /* LessThan */ ? sourceSymbolFile : targetSymbolFile; + var secondFile_1 = firstFile_1 === sourceSymbolFile ? targetSymbolFile : sourceSymbolFile; + var filesDuplicates = ts.getOrUpdate(amalgamatedDuplicates, firstFile_1.path + "|" + secondFile_1.path, function () { + return ({ firstFile: firstFile_1, secondFile: secondFile_1, conflictingSymbols: ts.createMap() }); + }); + var conflictingSymbolInfo = ts.getOrUpdate(filesDuplicates.conflictingSymbols, symbolName_1, function () { + return ({ isBlockScoped: isEitherBlockScoped_1, firstFileLocations: [], secondFileLocations: [] }); + }); + addDuplicateLocations(conflictingSymbolInfo.firstFileLocations, source); + addDuplicateLocations(conflictingSymbolInfo.secondFileLocations, target); + } + else { + addDuplicateDeclarationErrorsForSymbols(source, message, symbolName_1, target); + addDuplicateDeclarationErrorsForSymbols(target, message, symbolName_1, source); + } + } + return target; + function addDuplicateLocations(locs, symbol) { + for (var _i = 0, _a = symbol.declarations; _i < _a.length; _i++) { + var decl = _a[_i]; + ts.pushIfUnique(locs, decl); + } + } + } + function addDuplicateDeclarationErrorsForSymbols(target, message, symbolName, source) { + ts.forEach(target.declarations, function (node) { + addDuplicateDeclarationError(node, message, symbolName, source.declarations); + }); + } + function addDuplicateDeclarationError(node, message, symbolName, relatedNodes) { + var errorNode = (ts.getExpandoInitializer(node, /*isPrototypeAssignment*/ false) ? ts.getNameOfExpando(node) : ts.getNameOfDeclaration(node)) || node; + var err = lookupOrIssueError(errorNode, message, symbolName); + var _loop_6 = function (relatedNode) { + var adjustedNode = (ts.getExpandoInitializer(relatedNode, /*isPrototypeAssignment*/ false) ? ts.getNameOfExpando(relatedNode) : ts.getNameOfDeclaration(relatedNode)) || relatedNode; + if (adjustedNode === errorNode) + return "continue"; + err.relatedInformation = err.relatedInformation || []; + var leadingMessage = ts.createDiagnosticForNode(adjustedNode, ts.Diagnostics._0_was_also_declared_here, symbolName); + var followOnMessage = ts.createDiagnosticForNode(adjustedNode, ts.Diagnostics.and_here); + if (ts.length(err.relatedInformation) >= 5 || ts.some(err.relatedInformation, function (r) { return ts.compareDiagnostics(r, followOnMessage) === 0 /* EqualTo */ || ts.compareDiagnostics(r, leadingMessage) === 0 /* EqualTo */; })) + return "continue"; + ts.addRelatedInfo(err, !ts.length(err.relatedInformation) ? leadingMessage : followOnMessage); + }; + for (var _i = 0, _a = relatedNodes || ts.emptyArray; _i < _a.length; _i++) { + var relatedNode = _a[_i]; + _loop_6(relatedNode); + } + } + function combineSymbolTables(first, second) { + if (!ts.hasEntries(first)) + return second; + if (!ts.hasEntries(second)) + return first; + var combined = ts.createSymbolTable(); + mergeSymbolTable(combined, first); + mergeSymbolTable(combined, second); + return combined; + } + function mergeSymbolTable(target, source, unidirectional) { + if (unidirectional === void 0) { unidirectional = false; } + source.forEach(function (sourceSymbol, id) { + var targetSymbol = target.get(id); + target.set(id, targetSymbol ? mergeSymbol(targetSymbol, sourceSymbol, unidirectional) : sourceSymbol); + }); + } + function mergeModuleAugmentation(moduleName) { + var _a, _b; + var moduleAugmentation = moduleName.parent; + if (moduleAugmentation.symbol.declarations[0] !== moduleAugmentation) { + // this is a combined symbol for multiple augmentations within the same file. + // its symbol already has accumulated information for all declarations + // so we need to add it just once - do the work only for first declaration + ts.Debug.assert(moduleAugmentation.symbol.declarations.length > 1); + return; + } + if (ts.isGlobalScopeAugmentation(moduleAugmentation)) { + mergeSymbolTable(globals, moduleAugmentation.symbol.exports); + } + else { + // find a module that about to be augmented + // do not validate names of augmentations that are defined in ambient context + var moduleNotFoundError = !(moduleName.parent.parent.flags & 8388608 /* Ambient */) + ? ts.Diagnostics.Invalid_module_name_in_augmentation_module_0_cannot_be_found + : undefined; + var mainModule_1 = resolveExternalModuleNameWorker(moduleName, moduleName, moduleNotFoundError, /*isForAugmentation*/ true); + if (!mainModule_1) { + return; + } + // obtain item referenced by 'export=' + mainModule_1 = resolveExternalModuleSymbol(mainModule_1); + if (mainModule_1.flags & 1920 /* Namespace */) { + // If we're merging an augmentation to a pattern ambient module, we want to + // perform the merge unidirectionally from the augmentation ('a.foo') to + // the pattern ('*.foo'), so that 'getMergedSymbol()' on a.foo gives you + // all the exports both from the pattern and from the augmentation, but + // 'getMergedSymbol()' on *.foo only gives you exports from *.foo. + if (ts.some(patternAmbientModules, function (module) { return mainModule_1 === module.symbol; })) { + var merged = mergeSymbol(moduleAugmentation.symbol, mainModule_1, /*unidirectional*/ true); + if (!patternAmbientModuleAugmentations) { + patternAmbientModuleAugmentations = ts.createMap(); + } + // moduleName will be a StringLiteral since this is not `declare global`. + patternAmbientModuleAugmentations.set(moduleName.text, merged); + } + else { + if (((_a = mainModule_1.exports) === null || _a === void 0 ? void 0 : _a.get("__export" /* ExportStar */)) && ((_b = moduleAugmentation.symbol.exports) === null || _b === void 0 ? void 0 : _b.size)) { + // We may need to merge the module augmentation's exports into the target symbols of the resolved exports + var resolvedExports = getResolvedMembersOrExportsOfSymbol(mainModule_1, "resolvedExports" /* resolvedExports */); + for (var _i = 0, _c = ts.arrayFrom(moduleAugmentation.symbol.exports.entries()); _i < _c.length; _i++) { + var _d = _c[_i], key = _d[0], value = _d[1]; + if (resolvedExports.has(key) && !mainModule_1.exports.has(key)) { + mergeSymbol(resolvedExports.get(key), value); + } + } + } + mergeSymbol(mainModule_1, moduleAugmentation.symbol); + } + } + else { + // moduleName will be a StringLiteral since this is not `declare global`. + error(moduleName, ts.Diagnostics.Cannot_augment_module_0_because_it_resolves_to_a_non_module_entity, moduleName.text); + } + } + } + function addToSymbolTable(target, source, message) { + source.forEach(function (sourceSymbol, id) { + var targetSymbol = target.get(id); + if (targetSymbol) { + // Error on redeclarations + ts.forEach(targetSymbol.declarations, addDeclarationDiagnostic(ts.unescapeLeadingUnderscores(id), message)); + } + else { + target.set(id, sourceSymbol); + } + }); + function addDeclarationDiagnostic(id, message) { + return function (declaration) { return diagnostics.add(ts.createDiagnosticForNode(declaration, message, id)); }; + } + } + function getSymbolLinks(symbol) { + if (symbol.flags & 33554432 /* Transient */) + return symbol; + var id = getSymbolId(symbol); + return symbolLinks[id] || (symbolLinks[id] = new SymbolLinks()); + } + function getNodeLinks(node) { + var nodeId = getNodeId(node); + return nodeLinks[nodeId] || (nodeLinks[nodeId] = new NodeLinks()); + } + function isGlobalSourceFile(node) { + return node.kind === 290 /* SourceFile */ && !ts.isExternalOrCommonJsModule(node); + } + function getSymbol(symbols, name, meaning) { + if (meaning) { + var symbol = getMergedSymbol(symbols.get(name)); + if (symbol) { + ts.Debug.assert((ts.getCheckFlags(symbol) & 1 /* Instantiated */) === 0, "Should never get an instantiated symbol here."); + if (symbol.flags & meaning) { + return symbol; + } + if (symbol.flags & 2097152 /* Alias */) { + var target = resolveAlias(symbol); + // Unknown symbol means an error occurred in alias resolution, treat it as positive answer to avoid cascading errors + if (target === unknownSymbol || target.flags & meaning) { + return symbol; + } + } + } + } + // return undefined if we can't find a symbol. + } + /** + * Get symbols that represent parameter-property-declaration as parameter and as property declaration + * @param parameter a parameterDeclaration node + * @param parameterName a name of the parameter to get the symbols for. + * @return a tuple of two symbols + */ + function getSymbolsOfParameterPropertyDeclaration(parameter, parameterName) { + var constructorDeclaration = parameter.parent; + var classDeclaration = parameter.parent.parent; + var parameterSymbol = getSymbol(constructorDeclaration.locals, parameterName, 111551 /* Value */); + var propertySymbol = getSymbol(getMembersOfSymbol(classDeclaration.symbol), parameterName, 111551 /* Value */); + if (parameterSymbol && propertySymbol) { + return [parameterSymbol, propertySymbol]; + } + return ts.Debug.fail("There should exist two symbols, one as property declaration and one as parameter declaration"); + } + function isBlockScopedNameDeclaredBeforeUse(declaration, usage) { + var declarationFile = ts.getSourceFileOfNode(declaration); + var useFile = ts.getSourceFileOfNode(usage); + var declContainer = ts.getEnclosingBlockScopeContainer(declaration); + if (declarationFile !== useFile) { + if ((moduleKind && (declarationFile.externalModuleIndicator || useFile.externalModuleIndicator)) || + (!compilerOptions.outFile && !compilerOptions.out) || + isInTypeQuery(usage) || + declaration.flags & 8388608 /* Ambient */) { + // nodes are in different files and order cannot be determined + return true; + } + // declaration is after usage + // can be legal if usage is deferred (i.e. inside function or in initializer of instance property) + if (isUsedInFunctionOrInstanceProperty(usage, declaration)) { + return true; + } + var sourceFiles = host.getSourceFiles(); + return sourceFiles.indexOf(declarationFile) <= sourceFiles.indexOf(useFile); + } + if (declaration.pos <= usage.pos) { + // declaration is before usage + if (declaration.kind === 191 /* BindingElement */) { + // still might be illegal if declaration and usage are both binding elements (eg var [a = b, b = b] = [1, 2]) + var errorBindingElement = ts.getAncestor(usage, 191 /* BindingElement */); + if (errorBindingElement) { + return ts.findAncestor(errorBindingElement, ts.isBindingElement) !== ts.findAncestor(declaration, ts.isBindingElement) || + declaration.pos < errorBindingElement.pos; + } + // or it might be illegal if usage happens before parent variable is declared (eg var [a] = a) + return isBlockScopedNameDeclaredBeforeUse(ts.getAncestor(declaration, 242 /* VariableDeclaration */), usage); + } + else if (declaration.kind === 242 /* VariableDeclaration */) { + // still might be illegal if usage is in the initializer of the variable declaration (eg var a = a) + return !isImmediatelyUsedInInitializerOfBlockScopedVariable(declaration, usage); + } + else if (ts.isClassDeclaration(declaration)) { + // still might be illegal if the usage is within a computed property name in the class (eg class A { static p = "a"; [A.p]() {} }) + return !ts.findAncestor(usage, function (n) { return ts.isComputedPropertyName(n) && n.parent.parent === declaration; }); + } + else if (ts.isPropertyDeclaration(declaration)) { + // still might be illegal if a self-referencing property initializer (eg private x = this.x) + return !isPropertyImmediatelyReferencedWithinDeclaration(declaration, usage, /*stopAtAnyPropertyDeclaration*/ false); + } + else if (ts.isParameterPropertyDeclaration(declaration, declaration.parent)) { + // foo = this.bar is illegal in esnext+useDefineForClassFields when bar is a parameter property + return !(compilerOptions.target === 99 /* ESNext */ && !!compilerOptions.useDefineForClassFields + && ts.getContainingClass(declaration) === ts.getContainingClass(usage) + && isUsedInFunctionOrInstanceProperty(usage, declaration)); + } + return true; + } + // declaration is after usage, but it can still be legal if usage is deferred: + // 1. inside an export specifier + // 2. inside a function + // 3. inside an instance property initializer, a reference to a non-instance property + // (except when target: "esnext" and useDefineForClassFields: true and the reference is to a parameter property) + // 4. inside a static property initializer, a reference to a static method in the same class + // 5. inside a TS export= declaration (since we will move the export statement during emit to avoid TDZ) + // or if usage is in a type context: + // 1. inside a type query (typeof in type position) + // 2. inside a jsdoc comment + if (usage.parent.kind === 263 /* ExportSpecifier */ || (usage.parent.kind === 259 /* ExportAssignment */ && usage.parent.isExportEquals)) { + // export specifiers do not use the variable, they only make it available for use + return true; + } + // When resolving symbols for exports, the `usage` location passed in can be the export site directly + if (usage.kind === 259 /* ExportAssignment */ && usage.isExportEquals) { + return true; + } + if (!!(usage.flags & 4194304 /* JSDoc */) || isInTypeQuery(usage) || usageInTypeDeclaration()) { + return true; + } + if (isUsedInFunctionOrInstanceProperty(usage, declaration)) { + if (compilerOptions.target === 99 /* ESNext */ && !!compilerOptions.useDefineForClassFields + && ts.getContainingClass(declaration) + && (ts.isPropertyDeclaration(declaration) || ts.isParameterPropertyDeclaration(declaration, declaration.parent))) { + return !isPropertyImmediatelyReferencedWithinDeclaration(declaration, usage, /*stopAtAnyPropertyDeclaration*/ true); + } + else { + return true; + } + } + return false; + function usageInTypeDeclaration() { + return !!ts.findAncestor(usage, function (node) { return ts.isInterfaceDeclaration(node) || ts.isTypeAliasDeclaration(node); }); + } + function isImmediatelyUsedInInitializerOfBlockScopedVariable(declaration, usage) { + switch (declaration.parent.parent.kind) { + case 225 /* VariableStatement */: + case 230 /* ForStatement */: + case 232 /* ForOfStatement */: + // variable statement/for/for-of statement case, + // use site should not be inside variable declaration (initializer of declaration or binding element) + if (isSameScopeDescendentOf(usage, declaration, declContainer)) { + return true; + } + break; + } + // ForIn/ForOf case - use site should not be used in expression part + var grandparent = declaration.parent.parent; + return ts.isForInOrOfStatement(grandparent) && isSameScopeDescendentOf(usage, grandparent.expression, declContainer); + } + function isUsedInFunctionOrInstanceProperty(usage, declaration) { + return !!ts.findAncestor(usage, function (current) { + if (current === declContainer) { + return "quit"; + } + if (ts.isFunctionLike(current)) { + return true; + } + var initializerOfProperty = current.parent && + current.parent.kind === 159 /* PropertyDeclaration */ && + current.parent.initializer === current; + if (initializerOfProperty) { + if (ts.hasModifier(current.parent, 32 /* Static */)) { + if (declaration.kind === 161 /* MethodDeclaration */) { + return true; + } + } + else { + var isDeclarationInstanceProperty = declaration.kind === 159 /* PropertyDeclaration */ && !ts.hasModifier(declaration, 32 /* Static */); + if (!isDeclarationInstanceProperty || ts.getContainingClass(usage) !== ts.getContainingClass(declaration)) { + return true; + } + } + } + return false; + }); + } + /** stopAtAnyPropertyDeclaration is used for detecting ES-standard class field use-before-def errors */ + function isPropertyImmediatelyReferencedWithinDeclaration(declaration, usage, stopAtAnyPropertyDeclaration) { + // always legal if usage is after declaration + if (usage.end > declaration.end) { + return false; + } + // still might be legal if usage is deferred (e.g. x: any = () => this.x) + // otherwise illegal if immediately referenced within the declaration (e.g. x: any = this.x) + var ancestorChangingReferenceScope = ts.findAncestor(usage, function (node) { + if (node === declaration) { + return "quit"; + } + switch (node.kind) { + case 202 /* ArrowFunction */: + return true; + case 159 /* PropertyDeclaration */: + // even when stopping at any property declaration, they need to come from the same class + return stopAtAnyPropertyDeclaration && + (ts.isPropertyDeclaration(declaration) && node.parent === declaration.parent + || ts.isParameterPropertyDeclaration(declaration, declaration.parent) && node.parent === declaration.parent.parent) + ? "quit" : true; + case 223 /* Block */: + switch (node.parent.kind) { + case 163 /* GetAccessor */: + case 161 /* MethodDeclaration */: + case 164 /* SetAccessor */: + return true; + default: + return false; + } + default: + return false; + } + }); + return ancestorChangingReferenceScope === undefined; + } + } + function useOuterVariableScopeInParameter(result, location, lastLocation) { + var target = ts.getEmitScriptTarget(compilerOptions); + var functionLocation = location; + if (ts.isParameter(lastLocation) && functionLocation.body && result.valueDeclaration.pos >= functionLocation.body.pos && result.valueDeclaration.end <= functionLocation.body.end) { + // check for several cases where we introduce temporaries that require moving the name/initializer of the parameter to the body + // - static field in a class expression + // - optional chaining pre-es2020 + // - nullish coalesce pre-es2020 + // - spread assignment in binding pattern pre-es2017 + if (target >= 2 /* ES2015 */) { + var links = getNodeLinks(functionLocation); + if (links.declarationRequiresScopeChange === undefined) { + links.declarationRequiresScopeChange = ts.forEach(functionLocation.parameters, requiresScopeChange) || false; + } + return !links.declarationRequiresScopeChange; + } + } + return false; + function requiresScopeChange(node) { + return requiresScopeChangeWorker(node.name) + || !!node.initializer && requiresScopeChangeWorker(node.initializer); + } + function requiresScopeChangeWorker(node) { + switch (node.kind) { + case 202 /* ArrowFunction */: + case 201 /* FunctionExpression */: + case 244 /* FunctionDeclaration */: + case 162 /* Constructor */: + // do not descend into these + return false; + case 161 /* MethodDeclaration */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + case 281 /* PropertyAssignment */: + return requiresScopeChangeWorker(node.name); + case 159 /* PropertyDeclaration */: + // static properties in classes introduce temporary variables + if (ts.hasStaticModifier(node)) { + return target < 99 /* ESNext */ || !compilerOptions.useDefineForClassFields; + } + return requiresScopeChangeWorker(node.name); + default: + // null coalesce and optional chain pre-es2020 produce temporary variables + if (ts.isNullishCoalesce(node) || ts.isOptionalChain(node)) { + return target < 7 /* ES2020 */; + } + if (ts.isBindingElement(node) && node.dotDotDotToken && ts.isObjectBindingPattern(node.parent)) { + return target < 4 /* ES2017 */; + } + if (ts.isTypeNode(node)) + return false; + return ts.forEachChild(node, requiresScopeChangeWorker) || false; + } + } + } + /** + * Resolve a given name for a given meaning at a given location. An error is reported if the name was not found and + * the nameNotFoundMessage argument is not undefined. Returns the resolved symbol, or undefined if no symbol with + * the given name can be found. + * + * @param isUse If true, this will count towards --noUnusedLocals / --noUnusedParameters. + */ + function resolveName(location, name, meaning, nameNotFoundMessage, nameArg, isUse, excludeGlobals, suggestedNameNotFoundMessage) { + if (excludeGlobals === void 0) { excludeGlobals = false; } + return resolveNameHelper(location, name, meaning, nameNotFoundMessage, nameArg, isUse, excludeGlobals, getSymbol, suggestedNameNotFoundMessage); + } + function resolveNameHelper(location, name, meaning, nameNotFoundMessage, nameArg, isUse, excludeGlobals, lookup, suggestedNameNotFoundMessage) { + var originalLocation = location; // needed for did-you-mean error reporting, which gathers candidates starting from the original location + var result; + var lastLocation; + var lastSelfReferenceLocation; + var propertyWithInvalidInitializer; + var associatedDeclarationForContainingInitializerOrBindingName; + var withinDeferredContext = false; + var errorLocation = location; + var grandparent; + var isInExternalModule = false; + loop: while (location) { + // Locals of a source file are not in scope (because they get merged into the global symbol table) + if (location.locals && !isGlobalSourceFile(location)) { + if (result = lookup(location.locals, name, meaning)) { + var useResult = true; + if (ts.isFunctionLike(location) && lastLocation && lastLocation !== location.body) { + // symbol lookup restrictions for function-like declarations + // - Type parameters of a function are in scope in the entire function declaration, including the parameter + // list and return type. However, local types are only in scope in the function body. + // - parameters are only in the scope of function body + // This restriction does not apply to JSDoc comment types because they are parented + // at a higher level than type parameters would normally be + if (meaning & result.flags & 788968 /* Type */ && lastLocation.kind !== 303 /* JSDocComment */) { + useResult = result.flags & 262144 /* TypeParameter */ + // type parameters are visible in parameter list, return type and type parameter list + ? lastLocation === location.type || + lastLocation.kind === 156 /* Parameter */ || + lastLocation.kind === 155 /* TypeParameter */ + // local types not visible outside the function body + : false; + } + if (meaning & result.flags & 3 /* Variable */) { + // expression inside parameter will lookup as normal variable scope when targeting es2015+ + if (useOuterVariableScopeInParameter(result, location, lastLocation)) { + useResult = false; + } + else if (result.flags & 1 /* FunctionScopedVariable */) { + // parameters are visible only inside function body, parameter list and return type + // technically for parameter list case here we might mix parameters and variables declared in function, + // however it is detected separately when checking initializers of parameters + // to make sure that they reference no variables declared after them. + useResult = + lastLocation.kind === 156 /* Parameter */ || + (lastLocation === location.type && + !!ts.findAncestor(result.valueDeclaration, ts.isParameter)); + } + } + } + else if (location.kind === 180 /* ConditionalType */) { + // A type parameter declared using 'infer T' in a conditional type is visible only in + // the true branch of the conditional type. + useResult = lastLocation === location.trueType; + } + if (useResult) { + break loop; + } + else { + result = undefined; + } + } + } + withinDeferredContext = withinDeferredContext || getIsDeferredContext(location, lastLocation); + switch (location.kind) { + case 290 /* SourceFile */: + if (!ts.isExternalOrCommonJsModule(location)) + break; + isInExternalModule = true; + // falls through + case 249 /* ModuleDeclaration */: + var moduleExports = getSymbolOfNode(location).exports || emptySymbols; + if (location.kind === 290 /* SourceFile */ || (ts.isModuleDeclaration(location) && location.flags & 8388608 /* Ambient */ && !ts.isGlobalScopeAugmentation(location))) { + // It's an external module. First see if the module has an export default and if the local + // name of that export default matches. + if (result = moduleExports.get("default" /* Default */)) { + var localSymbol = ts.getLocalSymbolForExportDefault(result); + if (localSymbol && (result.flags & meaning) && localSymbol.escapedName === name) { + break loop; + } + result = undefined; + } + // Because of module/namespace merging, a module's exports are in scope, + // yet we never want to treat an export specifier as putting a member in scope. + // Therefore, if the name we find is purely an export specifier, it is not actually considered in scope. + // Two things to note about this: + // 1. We have to check this without calling getSymbol. The problem with calling getSymbol + // on an export specifier is that it might find the export specifier itself, and try to + // resolve it as an alias. This will cause the checker to consider the export specifier + // a circular alias reference when it might not be. + // 2. We check === SymbolFlags.Alias in order to check that the symbol is *purely* + // an alias. If we used &, we'd be throwing out symbols that have non alias aspects, + // which is not the desired behavior. + var moduleExport = moduleExports.get(name); + if (moduleExport && + moduleExport.flags === 2097152 /* Alias */ && + (ts.getDeclarationOfKind(moduleExport, 263 /* ExportSpecifier */) || ts.getDeclarationOfKind(moduleExport, 262 /* NamespaceExport */))) { + break; + } + } + // ES6 exports are also visible locally (except for 'default'), but commonjs exports are not (except typedefs) + if (name !== "default" /* Default */ && (result = lookup(moduleExports, name, meaning & 2623475 /* ModuleMember */))) { + if (ts.isSourceFile(location) && location.commonJsModuleIndicator && !result.declarations.some(ts.isJSDocTypeAlias)) { + result = undefined; + } + else { + break loop; + } + } + break; + case 248 /* EnumDeclaration */: + if (result = lookup(getSymbolOfNode(location).exports, name, meaning & 8 /* EnumMember */)) { + break loop; + } + break; + case 159 /* PropertyDeclaration */: + // TypeScript 1.0 spec (April 2014): 8.4.1 + // Initializer expressions for instance member variables are evaluated in the scope + // of the class constructor body but are not permitted to reference parameters or + // local variables of the constructor. This effectively means that entities from outer scopes + // by the same name as a constructor parameter or local variable are inaccessible + // in initializer expressions for instance member variables. + if (!ts.hasModifier(location, 32 /* Static */)) { + var ctor = findConstructorDeclaration(location.parent); + if (ctor && ctor.locals) { + if (lookup(ctor.locals, name, meaning & 111551 /* Value */)) { + // Remember the property node, it will be used later to report appropriate error + propertyWithInvalidInitializer = location; + } + } + } + break; + case 245 /* ClassDeclaration */: + case 214 /* ClassExpression */: + case 246 /* InterfaceDeclaration */: + // The below is used to lookup type parameters within a class or interface, as they are added to the class/interface locals + // These can never be latebound, so the symbol's raw members are sufficient. `getMembersOfNode` cannot be used, as it would + // trigger resolving late-bound names, which we may already be in the process of doing while we're here! + if (result = lookup(getSymbolOfNode(location).members || emptySymbols, name, meaning & 788968 /* Type */)) { + if (!isTypeParameterSymbolDeclaredInContainer(result, location)) { + // ignore type parameters not declared in this container + result = undefined; + break; + } + if (lastLocation && ts.hasModifier(lastLocation, 32 /* Static */)) { + // TypeScript 1.0 spec (April 2014): 3.4.1 + // The scope of a type parameter extends over the entire declaration with which the type + // parameter list is associated, with the exception of static member declarations in classes. + error(errorLocation, ts.Diagnostics.Static_members_cannot_reference_class_type_parameters); + return undefined; + } + break loop; + } + if (location.kind === 214 /* ClassExpression */ && meaning & 32 /* Class */) { + var className = location.name; + if (className && name === className.escapedText) { + result = location.symbol; + break loop; + } + } + break; + case 216 /* ExpressionWithTypeArguments */: + // The type parameters of a class are not in scope in the base class expression. + if (lastLocation === location.expression && location.parent.token === 90 /* ExtendsKeyword */) { + var container = location.parent.parent; + if (ts.isClassLike(container) && (result = lookup(getSymbolOfNode(container).members, name, meaning & 788968 /* Type */))) { + if (nameNotFoundMessage) { + error(errorLocation, ts.Diagnostics.Base_class_expressions_cannot_reference_class_type_parameters); + } + return undefined; + } + } + break; + // It is not legal to reference a class's own type parameters from a computed property name that + // belongs to the class. For example: + // + // function foo() { return '' } + // class C { // <-- Class's own type parameter T + // [foo()]() { } // <-- Reference to T from class's own computed property + // } + // + case 154 /* ComputedPropertyName */: + grandparent = location.parent.parent; + if (ts.isClassLike(grandparent) || grandparent.kind === 246 /* InterfaceDeclaration */) { + // A reference to this grandparent's type parameters would be an error + if (result = lookup(getSymbolOfNode(grandparent).members, name, meaning & 788968 /* Type */)) { + error(errorLocation, ts.Diagnostics.A_computed_property_name_cannot_reference_a_type_parameter_from_its_containing_type); + return undefined; + } + } + break; + case 202 /* ArrowFunction */: + // when targeting ES6 or higher there is no 'arguments' in an arrow function + // for lower compile targets the resolved symbol is used to emit an error + if (compilerOptions.target >= 2 /* ES2015 */) { + break; + } + // falls through + case 161 /* MethodDeclaration */: + case 162 /* Constructor */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + case 244 /* FunctionDeclaration */: + if (meaning & 3 /* Variable */ && name === "arguments") { + result = argumentsSymbol; + break loop; + } + break; + case 201 /* FunctionExpression */: + if (meaning & 3 /* Variable */ && name === "arguments") { + result = argumentsSymbol; + break loop; + } + if (meaning & 16 /* Function */) { + var functionName = location.name; + if (functionName && name === functionName.escapedText) { + result = location.symbol; + break loop; + } + } + break; + case 157 /* Decorator */: + // Decorators are resolved at the class declaration. Resolving at the parameter + // or member would result in looking up locals in the method. + // + // function y() {} + // class C { + // method(@y x, y) {} // <-- decorator y should be resolved at the class declaration, not the parameter. + // } + // + if (location.parent && location.parent.kind === 156 /* Parameter */) { + location = location.parent; + } + // + // function y() {} + // class C { + // @y method(x, y) {} // <-- decorator y should be resolved at the class declaration, not the method. + // } + // + // class Decorators are resolved outside of the class to avoid referencing type parameters of that class. + // + // type T = number; + // declare function y(x: T): any; + // @param(1 as T) // <-- T should resolve to the type alias outside of class C + // class C {} + if (location.parent && (ts.isClassElement(location.parent) || location.parent.kind === 245 /* ClassDeclaration */)) { + location = location.parent; + } + break; + case 322 /* JSDocTypedefTag */: + case 315 /* JSDocCallbackTag */: + case 316 /* JSDocEnumTag */: + // js type aliases do not resolve names from their host, so skip past it + location = ts.getJSDocHost(location); + break; + case 156 /* Parameter */: + if (lastLocation && (lastLocation === location.initializer || + lastLocation === location.name && ts.isBindingPattern(lastLocation))) { + if (!associatedDeclarationForContainingInitializerOrBindingName) { + associatedDeclarationForContainingInitializerOrBindingName = location; + } + } + break; + case 191 /* BindingElement */: + if (lastLocation && (lastLocation === location.initializer || + lastLocation === location.name && ts.isBindingPattern(lastLocation))) { + var root = ts.getRootDeclaration(location); + if (root.kind === 156 /* Parameter */) { + if (!associatedDeclarationForContainingInitializerOrBindingName) { + associatedDeclarationForContainingInitializerOrBindingName = location; + } + } + } + break; + } + if (isSelfReferenceLocation(location)) { + lastSelfReferenceLocation = location; + } + lastLocation = location; + location = location.parent; + } + // We just climbed up parents looking for the name, meaning that we started in a descendant node of `lastLocation`. + // If `result === lastSelfReferenceLocation.symbol`, that means that we are somewhere inside `lastSelfReferenceLocation` looking up a name, and resolving to `lastLocation` itself. + // That means that this is a self-reference of `lastLocation`, and shouldn't count this when considering whether `lastLocation` is used. + if (isUse && result && (!lastSelfReferenceLocation || result !== lastSelfReferenceLocation.symbol)) { + result.isReferenced |= meaning; + } + if (!result) { + if (lastLocation) { + ts.Debug.assert(lastLocation.kind === 290 /* SourceFile */); + if (lastLocation.commonJsModuleIndicator && name === "exports" && meaning & lastLocation.symbol.flags) { + return lastLocation.symbol; + } + } + if (!excludeGlobals) { + result = lookup(globals, name, meaning); + } + } + if (!result) { + if (originalLocation && ts.isInJSFile(originalLocation) && originalLocation.parent) { + if (ts.isRequireCall(originalLocation.parent, /*checkArgumentIsStringLiteralLike*/ false)) { + return requireSymbol; + } + } + } + if (!result) { + if (nameNotFoundMessage) { + if (!errorLocation || + !checkAndReportErrorForMissingPrefix(errorLocation, name, nameArg) && // TODO: GH#18217 + !checkAndReportErrorForExtendingInterface(errorLocation) && + !checkAndReportErrorForUsingTypeAsNamespace(errorLocation, name, meaning) && + !checkAndReportErrorForExportingPrimitiveType(errorLocation, name) && + !checkAndReportErrorForUsingTypeAsValue(errorLocation, name, meaning) && + !checkAndReportErrorForUsingNamespaceModuleAsValue(errorLocation, name, meaning) && + !checkAndReportErrorForUsingValueAsType(errorLocation, name, meaning)) { + var suggestion = void 0; + if (suggestedNameNotFoundMessage && suggestionCount < maximumSuggestionCount) { + suggestion = getSuggestedSymbolForNonexistentSymbol(originalLocation, name, meaning); + if (suggestion) { + var suggestionName = symbolToString(suggestion); + var diagnostic = error(errorLocation, suggestedNameNotFoundMessage, diagnosticName(nameArg), suggestionName); + if (suggestion.valueDeclaration) { + ts.addRelatedInfo(diagnostic, ts.createDiagnosticForNode(suggestion.valueDeclaration, ts.Diagnostics._0_is_declared_here, suggestionName)); + } + } + } + if (!suggestion) { + error(errorLocation, nameNotFoundMessage, diagnosticName(nameArg)); + } + suggestionCount++; + } + } + return undefined; + } + // Perform extra checks only if error reporting was requested + if (nameNotFoundMessage) { + if (propertyWithInvalidInitializer && !(compilerOptions.target === 99 /* ESNext */ && compilerOptions.useDefineForClassFields)) { + // We have a match, but the reference occurred within a property initializer and the identifier also binds + // to a local variable in the constructor where the code will be emitted. Note that this is actually allowed + // with ESNext+useDefineForClassFields because the scope semantics are different. + var propertyName = propertyWithInvalidInitializer.name; + error(errorLocation, ts.Diagnostics.Initializer_of_instance_member_variable_0_cannot_reference_identifier_1_declared_in_the_constructor, ts.declarationNameToString(propertyName), diagnosticName(nameArg)); + return undefined; + } + // Only check for block-scoped variable if we have an error location and are looking for the + // name with variable meaning + // For example, + // declare module foo { + // interface bar {} + // } + // const foo/*1*/: foo/*2*/.bar; + // The foo at /*1*/ and /*2*/ will share same symbol with two meanings: + // block-scoped variable and namespace module. However, only when we + // try to resolve name in /*1*/ which is used in variable position, + // we want to check for block-scoped + if (errorLocation && + (meaning & 2 /* BlockScopedVariable */ || + ((meaning & 32 /* Class */ || meaning & 384 /* Enum */) && (meaning & 111551 /* Value */) === 111551 /* Value */))) { + var exportOrLocalSymbol = getExportSymbolOfValueSymbolIfExported(result); + if (exportOrLocalSymbol.flags & 2 /* BlockScopedVariable */ || exportOrLocalSymbol.flags & 32 /* Class */ || exportOrLocalSymbol.flags & 384 /* Enum */) { + checkResolvedBlockScopedVariable(exportOrLocalSymbol, errorLocation); + } + } + // If we're in an external module, we can't reference value symbols created from UMD export declarations + if (result && isInExternalModule && (meaning & 111551 /* Value */) === 111551 /* Value */ && !(originalLocation.flags & 4194304 /* JSDoc */)) { + var merged = getMergedSymbol(result); + if (ts.length(merged.declarations) && ts.every(merged.declarations, function (d) { return ts.isNamespaceExportDeclaration(d) || ts.isSourceFile(d) && !!d.symbol.globalExports; })) { + errorOrSuggestion(!compilerOptions.allowUmdGlobalAccess, errorLocation, ts.Diagnostics._0_refers_to_a_UMD_global_but_the_current_file_is_a_module_Consider_adding_an_import_instead, ts.unescapeLeadingUnderscores(name)); + } + } + // If we're in a parameter initializer or binding name, we can't reference the values of the parameter whose initializer we're within or parameters to the right + if (result && associatedDeclarationForContainingInitializerOrBindingName && !withinDeferredContext && (meaning & 111551 /* Value */) === 111551 /* Value */) { + var candidate = getMergedSymbol(getLateBoundSymbol(result)); + var root = ts.getRootDeclaration(associatedDeclarationForContainingInitializerOrBindingName); + // A parameter initializer or binding pattern initializer within a parameter cannot refer to itself + if (candidate === getSymbolOfNode(associatedDeclarationForContainingInitializerOrBindingName)) { + error(errorLocation, ts.Diagnostics.Parameter_0_cannot_reference_itself, ts.declarationNameToString(associatedDeclarationForContainingInitializerOrBindingName.name)); + } + // And it cannot refer to any declarations which come after it + else if (candidate.valueDeclaration && candidate.valueDeclaration.pos > associatedDeclarationForContainingInitializerOrBindingName.pos && root.parent.locals && lookup(root.parent.locals, candidate.escapedName, meaning) === candidate) { + error(errorLocation, ts.Diagnostics.Parameter_0_cannot_reference_identifier_1_declared_after_it, ts.declarationNameToString(associatedDeclarationForContainingInitializerOrBindingName.name), ts.declarationNameToString(errorLocation)); + } + } + if (result && errorLocation && meaning & 111551 /* Value */ && result.flags & 2097152 /* Alias */) { + checkSymbolUsageInExpressionContext(result, name, errorLocation); + } + } + return result; + } + function checkSymbolUsageInExpressionContext(symbol, name, useSite) { + if (!ts.isValidTypeOnlyAliasUseSite(useSite)) { + var typeOnlyDeclaration = getTypeOnlyAliasDeclaration(symbol); + if (typeOnlyDeclaration) { + var isExport = ts.typeOnlyDeclarationIsExport(typeOnlyDeclaration); + var message = isExport + ? ts.Diagnostics._0_cannot_be_used_as_a_value_because_it_was_exported_using_export_type + : ts.Diagnostics._0_cannot_be_used_as_a_value_because_it_was_imported_using_import_type; + var relatedMessage = isExport + ? ts.Diagnostics._0_was_exported_here + : ts.Diagnostics._0_was_imported_here; + var unescapedName = ts.unescapeLeadingUnderscores(name); + ts.addRelatedInfo(error(useSite, message, unescapedName), ts.createDiagnosticForNode(typeOnlyDeclaration, relatedMessage, unescapedName)); + } + } + } + function getIsDeferredContext(location, lastLocation) { + if (location.kind !== 202 /* ArrowFunction */ && location.kind !== 201 /* FunctionExpression */) { + // initializers in instance property declaration of class like entities are executed in constructor and thus deferred + return ts.isTypeQueryNode(location) || ((ts.isFunctionLikeDeclaration(location) || + (location.kind === 159 /* PropertyDeclaration */ && !ts.hasModifier(location, 32 /* Static */))) && (!lastLocation || lastLocation !== location.name)); // A name is evaluated within the enclosing scope - so it shouldn't count as deferred + } + if (lastLocation && lastLocation === location.name) { + return false; + } + // generator functions and async functions are not inlined in control flow when immediately invoked + if (location.asteriskToken || ts.hasModifier(location, 256 /* Async */)) { + return true; + } + return !ts.getImmediatelyInvokedFunctionExpression(location); + } + function isSelfReferenceLocation(node) { + switch (node.kind) { + case 244 /* FunctionDeclaration */: + case 245 /* ClassDeclaration */: + case 246 /* InterfaceDeclaration */: + case 248 /* EnumDeclaration */: + case 247 /* TypeAliasDeclaration */: + case 249 /* ModuleDeclaration */: // For `namespace N { N; }` + return true; + default: + return false; + } + } + function diagnosticName(nameArg) { + return ts.isString(nameArg) ? ts.unescapeLeadingUnderscores(nameArg) : ts.declarationNameToString(nameArg); + } + function isTypeParameterSymbolDeclaredInContainer(symbol, container) { + for (var _i = 0, _a = symbol.declarations; _i < _a.length; _i++) { + var decl = _a[_i]; + if (decl.kind === 155 /* TypeParameter */) { + var parent = ts.isJSDocTemplateTag(decl.parent) ? ts.getJSDocHost(decl.parent) : decl.parent; + if (parent === container) { + return !(ts.isJSDocTemplateTag(decl.parent) && ts.find(decl.parent.parent.tags, ts.isJSDocTypeAlias)); // TODO: GH#18217 + } + } + } + return false; + } + function checkAndReportErrorForMissingPrefix(errorLocation, name, nameArg) { + if (!ts.isIdentifier(errorLocation) || errorLocation.escapedText !== name || isTypeReferenceIdentifier(errorLocation) || isInTypeQuery(errorLocation)) { + return false; + } + var container = ts.getThisContainer(errorLocation, /*includeArrowFunctions*/ false); + var location = container; + while (location) { + if (ts.isClassLike(location.parent)) { + var classSymbol = getSymbolOfNode(location.parent); + if (!classSymbol) { + break; + } + // Check to see if a static member exists. + var constructorType = getTypeOfSymbol(classSymbol); + if (getPropertyOfType(constructorType, name)) { + error(errorLocation, ts.Diagnostics.Cannot_find_name_0_Did_you_mean_the_static_member_1_0, diagnosticName(nameArg), symbolToString(classSymbol)); + return true; + } + // No static member is present. + // Check if we're in an instance method and look for a relevant instance member. + if (location === container && !ts.hasModifier(location, 32 /* Static */)) { + var instanceType = getDeclaredTypeOfSymbol(classSymbol).thisType; // TODO: GH#18217 + if (getPropertyOfType(instanceType, name)) { + error(errorLocation, ts.Diagnostics.Cannot_find_name_0_Did_you_mean_the_instance_member_this_0, diagnosticName(nameArg)); + return true; + } + } + } + location = location.parent; + } + return false; + } + function checkAndReportErrorForExtendingInterface(errorLocation) { + var expression = getEntityNameForExtendingInterface(errorLocation); + if (expression && resolveEntityName(expression, 64 /* Interface */, /*ignoreErrors*/ true)) { + error(errorLocation, ts.Diagnostics.Cannot_extend_an_interface_0_Did_you_mean_implements, ts.getTextOfNode(expression)); + return true; + } + return false; + } + /** + * Climbs up parents to an ExpressionWithTypeArguments, and returns its expression, + * but returns undefined if that expression is not an EntityNameExpression. + */ + function getEntityNameForExtendingInterface(node) { + switch (node.kind) { + case 75 /* Identifier */: + case 194 /* PropertyAccessExpression */: + return node.parent ? getEntityNameForExtendingInterface(node.parent) : undefined; + case 216 /* ExpressionWithTypeArguments */: + if (ts.isEntityNameExpression(node.expression)) { + return node.expression; + } + // falls through + default: + return undefined; + } + } + function checkAndReportErrorForUsingTypeAsNamespace(errorLocation, name, meaning) { + var namespaceMeaning = 1920 /* Namespace */ | (ts.isInJSFile(errorLocation) ? 111551 /* Value */ : 0); + if (meaning === namespaceMeaning) { + var symbol = resolveSymbol(resolveName(errorLocation, name, 788968 /* Type */ & ~namespaceMeaning, /*nameNotFoundMessage*/ undefined, /*nameArg*/ undefined, /*isUse*/ false)); + var parent = errorLocation.parent; + if (symbol) { + if (ts.isQualifiedName(parent)) { + ts.Debug.assert(parent.left === errorLocation, "Should only be resolving left side of qualified name as a namespace"); + var propName = parent.right.escapedText; + var propType = getPropertyOfType(getDeclaredTypeOfSymbol(symbol), propName); + if (propType) { + error(parent, ts.Diagnostics.Cannot_access_0_1_because_0_is_a_type_but_not_a_namespace_Did_you_mean_to_retrieve_the_type_of_the_property_1_in_0_with_0_1, ts.unescapeLeadingUnderscores(name), ts.unescapeLeadingUnderscores(propName)); + return true; + } + } + error(errorLocation, ts.Diagnostics._0_only_refers_to_a_type_but_is_being_used_as_a_namespace_here, ts.unescapeLeadingUnderscores(name)); + return true; + } + } + return false; + } + function checkAndReportErrorForUsingValueAsType(errorLocation, name, meaning) { + if (meaning & (788968 /* Type */ & ~1920 /* Namespace */)) { + var symbol = resolveSymbol(resolveName(errorLocation, name, ~788968 /* Type */ & 111551 /* Value */, /*nameNotFoundMessage*/ undefined, /*nameArg*/ undefined, /*isUse*/ false)); + if (symbol && !(symbol.flags & 1920 /* Namespace */)) { + error(errorLocation, ts.Diagnostics._0_refers_to_a_value_but_is_being_used_as_a_type_here_Did_you_mean_typeof_0, ts.unescapeLeadingUnderscores(name)); + return true; + } + } + return false; + } + function isPrimitiveTypeName(name) { + return name === "any" || name === "string" || name === "number" || name === "boolean" || name === "never" || name === "unknown"; + } + function checkAndReportErrorForExportingPrimitiveType(errorLocation, name) { + if (isPrimitiveTypeName(name) && errorLocation.parent.kind === 263 /* ExportSpecifier */) { + error(errorLocation, ts.Diagnostics.Cannot_export_0_Only_local_declarations_can_be_exported_from_a_module, name); + return true; + } + return false; + } + function checkAndReportErrorForUsingTypeAsValue(errorLocation, name, meaning) { + if (meaning & (111551 /* Value */ & ~1024 /* NamespaceModule */)) { + if (isPrimitiveTypeName(name)) { + error(errorLocation, ts.Diagnostics._0_only_refers_to_a_type_but_is_being_used_as_a_value_here, ts.unescapeLeadingUnderscores(name)); + return true; + } + var symbol = resolveSymbol(resolveName(errorLocation, name, 788968 /* Type */ & ~111551 /* Value */, /*nameNotFoundMessage*/ undefined, /*nameArg*/ undefined, /*isUse*/ false)); + if (symbol && !(symbol.flags & 1024 /* NamespaceModule */)) { + var message = isES2015OrLaterConstructorName(name) + ? ts.Diagnostics._0_only_refers_to_a_type_but_is_being_used_as_a_value_here_Do_you_need_to_change_your_target_library_Try_changing_the_lib_compiler_option_to_es2015_or_later + : ts.Diagnostics._0_only_refers_to_a_type_but_is_being_used_as_a_value_here; + error(errorLocation, message, ts.unescapeLeadingUnderscores(name)); + return true; + } + } + return false; + } + function isES2015OrLaterConstructorName(n) { + switch (n) { + case "Promise": + case "Symbol": + case "Map": + case "WeakMap": + case "Set": + case "WeakSet": + return true; + } + return false; + } + function checkAndReportErrorForUsingNamespaceModuleAsValue(errorLocation, name, meaning) { + if (meaning & (111551 /* Value */ & ~1024 /* NamespaceModule */ & ~788968 /* Type */)) { + var symbol = resolveSymbol(resolveName(errorLocation, name, 1024 /* NamespaceModule */ & ~111551 /* Value */, /*nameNotFoundMessage*/ undefined, /*nameArg*/ undefined, /*isUse*/ false)); + if (symbol) { + error(errorLocation, ts.Diagnostics.Cannot_use_namespace_0_as_a_value, ts.unescapeLeadingUnderscores(name)); + return true; + } + } + else if (meaning & (788968 /* Type */ & ~1024 /* NamespaceModule */ & ~111551 /* Value */)) { + var symbol = resolveSymbol(resolveName(errorLocation, name, (512 /* ValueModule */ | 1024 /* NamespaceModule */) & ~788968 /* Type */, /*nameNotFoundMessage*/ undefined, /*nameArg*/ undefined, /*isUse*/ false)); + if (symbol) { + error(errorLocation, ts.Diagnostics.Cannot_use_namespace_0_as_a_type, ts.unescapeLeadingUnderscores(name)); + return true; + } + } + return false; + } + function checkResolvedBlockScopedVariable(result, errorLocation) { + ts.Debug.assert(!!(result.flags & 2 /* BlockScopedVariable */ || result.flags & 32 /* Class */ || result.flags & 384 /* Enum */)); + if (result.flags & (16 /* Function */ | 1 /* FunctionScopedVariable */ | 67108864 /* Assignment */) && result.flags & 32 /* Class */) { + // constructor functions aren't block scoped + return; + } + // Block-scoped variables cannot be used before their definition + var declaration = ts.find(result.declarations, function (d) { return ts.isBlockOrCatchScoped(d) || ts.isClassLike(d) || (d.kind === 248 /* EnumDeclaration */); }); + if (declaration === undefined) + return ts.Debug.fail("checkResolvedBlockScopedVariable could not find block-scoped declaration"); + if (!(declaration.flags & 8388608 /* Ambient */) && !isBlockScopedNameDeclaredBeforeUse(declaration, errorLocation)) { + var diagnosticMessage = void 0; + var declarationName = ts.declarationNameToString(ts.getNameOfDeclaration(declaration)); + if (result.flags & 2 /* BlockScopedVariable */) { + diagnosticMessage = error(errorLocation, ts.Diagnostics.Block_scoped_variable_0_used_before_its_declaration, declarationName); + } + else if (result.flags & 32 /* Class */) { + diagnosticMessage = error(errorLocation, ts.Diagnostics.Class_0_used_before_its_declaration, declarationName); + } + else if (result.flags & 256 /* RegularEnum */) { + diagnosticMessage = error(errorLocation, ts.Diagnostics.Enum_0_used_before_its_declaration, declarationName); + } + else { + ts.Debug.assert(!!(result.flags & 128 /* ConstEnum */)); + if (compilerOptions.preserveConstEnums) { + diagnosticMessage = error(errorLocation, ts.Diagnostics.Class_0_used_before_its_declaration, declarationName); + } + } + if (diagnosticMessage) { + ts.addRelatedInfo(diagnosticMessage, ts.createDiagnosticForNode(declaration, ts.Diagnostics._0_is_declared_here, declarationName)); + } + } + } + /* Starting from 'initial' node walk up the parent chain until 'stopAt' node is reached. + * If at any point current node is equal to 'parent' node - return true. + * Return false if 'stopAt' node is reached or isFunctionLike(current) === true. + */ + function isSameScopeDescendentOf(initial, parent, stopAt) { + return !!parent && !!ts.findAncestor(initial, function (n) { return n === stopAt || ts.isFunctionLike(n) ? "quit" : n === parent; }); + } + function getAnyImportSyntax(node) { + switch (node.kind) { + case 253 /* ImportEqualsDeclaration */: + return node; + case 255 /* ImportClause */: + return node.parent; + case 256 /* NamespaceImport */: + return node.parent.parent; + case 258 /* ImportSpecifier */: + return node.parent.parent.parent; + default: + return undefined; + } + } + function getDeclarationOfAliasSymbol(symbol) { + return ts.find(symbol.declarations, isAliasSymbolDeclaration); + } + /** + * An alias symbol is created by one of the following declarations: + * import = ... + * import from ... + * import * as from ... + * import { x as } from ... + * export { x as } from ... + * export * as ns from ... + * export = + * export default + * module.exports = + * {} + * {name: } + */ + function isAliasSymbolDeclaration(node) { + return node.kind === 253 /* ImportEqualsDeclaration */ || + node.kind === 252 /* NamespaceExportDeclaration */ || + node.kind === 255 /* ImportClause */ && !!node.name || + node.kind === 256 /* NamespaceImport */ || + node.kind === 262 /* NamespaceExport */ || + node.kind === 258 /* ImportSpecifier */ || + node.kind === 263 /* ExportSpecifier */ || + node.kind === 259 /* ExportAssignment */ && ts.exportAssignmentIsAlias(node) || + ts.isBinaryExpression(node) && ts.getAssignmentDeclarationKind(node) === 2 /* ModuleExports */ && ts.exportAssignmentIsAlias(node) || + ts.isPropertyAccessExpression(node) + && ts.isBinaryExpression(node.parent) + && node.parent.left === node + && node.parent.operatorToken.kind === 62 /* EqualsToken */ + && isAliasableOrJsExpression(node.parent.right) || + node.kind === 282 /* ShorthandPropertyAssignment */ || + node.kind === 281 /* PropertyAssignment */ && isAliasableOrJsExpression(node.initializer); + } + function isAliasableOrJsExpression(e) { + return ts.isAliasableExpression(e) || ts.isFunctionExpression(e) && isJSConstructor(e); + } + function getTargetOfImportEqualsDeclaration(node, dontResolveAlias) { + if (node.moduleReference.kind === 265 /* ExternalModuleReference */) { + var immediate = resolveExternalModuleName(node, ts.getExternalModuleImportEqualsDeclarationExpression(node)); + var resolved_4 = resolveExternalModuleSymbol(immediate); + markSymbolOfAliasDeclarationIfTypeOnly(node, immediate, resolved_4, /*overwriteEmpty*/ false); + return resolved_4; + } + var resolved = getSymbolOfPartOfRightHandSideOfImportEquals(node.moduleReference, dontResolveAlias); + checkAndReportErrorForResolvingImportAliasToTypeOnlySymbol(node, resolved); + return resolved; + } + function checkAndReportErrorForResolvingImportAliasToTypeOnlySymbol(node, resolved) { + if (markSymbolOfAliasDeclarationIfTypeOnly(node, /*immediateTarget*/ undefined, resolved, /*overwriteEmpty*/ false)) { + var typeOnlyDeclaration = getTypeOnlyAliasDeclaration(getSymbolOfNode(node)); + var isExport = ts.typeOnlyDeclarationIsExport(typeOnlyDeclaration); + var message = isExport + ? ts.Diagnostics.An_import_alias_cannot_reference_a_declaration_that_was_exported_using_export_type + : ts.Diagnostics.An_import_alias_cannot_reference_a_declaration_that_was_imported_using_import_type; + var relatedMessage = isExport + ? ts.Diagnostics._0_was_exported_here + : ts.Diagnostics._0_was_imported_here; + // Non-null assertion is safe because the optionality comes from ImportClause, + // but if an ImportClause was the typeOnlyDeclaration, it had to have a `name`. + var name = ts.unescapeLeadingUnderscores(typeOnlyDeclaration.name.escapedText); + ts.addRelatedInfo(error(node.moduleReference, message), ts.createDiagnosticForNode(typeOnlyDeclaration, relatedMessage, name)); + } + } + function resolveExportByName(moduleSymbol, name, sourceNode, dontResolveAlias) { + var exportValue = moduleSymbol.exports.get("export=" /* ExportEquals */); + if (exportValue) { + return getPropertyOfType(getTypeOfSymbol(exportValue), name); + } + var exportSymbol = moduleSymbol.exports.get(name); + var resolved = resolveSymbol(exportSymbol, dontResolveAlias); + markSymbolOfAliasDeclarationIfTypeOnly(sourceNode, exportSymbol, resolved, /*overwriteEmpty*/ false); + return resolved; + } + function isSyntacticDefault(node) { + return ((ts.isExportAssignment(node) && !node.isExportEquals) || ts.hasModifier(node, 512 /* Default */) || ts.isExportSpecifier(node)); + } + function canHaveSyntheticDefault(file, moduleSymbol, dontResolveAlias) { + if (!allowSyntheticDefaultImports) { + return false; + } + // Declaration files (and ambient modules) + if (!file || file.isDeclarationFile) { + // Definitely cannot have a synthetic default if they have a syntactic default member specified + var defaultExportSymbol = resolveExportByName(moduleSymbol, "default" /* Default */, /*sourceNode*/ undefined, /*dontResolveAlias*/ true); // Dont resolve alias because we want the immediately exported symbol's declaration + if (defaultExportSymbol && ts.some(defaultExportSymbol.declarations, isSyntacticDefault)) { + return false; + } + // It _might_ still be incorrect to assume there is no __esModule marker on the import at runtime, even if there is no `default` member + // So we check a bit more, + if (resolveExportByName(moduleSymbol, ts.escapeLeadingUnderscores("__esModule"), /*sourceNode*/ undefined, dontResolveAlias)) { + // If there is an `__esModule` specified in the declaration (meaning someone explicitly added it or wrote it in their code), + // it definitely is a module and does not have a synthetic default + return false; + } + // There are _many_ declaration files not written with esmodules in mind that still get compiled into a format with __esModule set + // Meaning there may be no default at runtime - however to be on the permissive side, we allow access to a synthetic default member + // as there is no marker to indicate if the accompanying JS has `__esModule` or not, or is even native esm + return true; + } + // TypeScript files never have a synthetic default (as they are always emitted with an __esModule marker) _unless_ they contain an export= statement + if (!ts.isSourceFileJS(file)) { + return hasExportAssignmentSymbol(moduleSymbol); + } + // JS files have a synthetic default if they do not contain ES2015+ module syntax (export = is not valid in js) _and_ do not have an __esModule marker + return !file.externalModuleIndicator && !resolveExportByName(moduleSymbol, ts.escapeLeadingUnderscores("__esModule"), /*sourceNode*/ undefined, dontResolveAlias); + } + function getTargetOfImportClause(node, dontResolveAlias) { + var moduleSymbol = resolveExternalModuleName(node, node.parent.moduleSpecifier); + if (moduleSymbol) { + var exportDefaultSymbol = void 0; + if (ts.isShorthandAmbientModuleSymbol(moduleSymbol)) { + exportDefaultSymbol = moduleSymbol; + } + else { + exportDefaultSymbol = resolveExportByName(moduleSymbol, "default" /* Default */, node, dontResolveAlias); + } + var file = ts.find(moduleSymbol.declarations, ts.isSourceFile); + var hasSyntheticDefault = canHaveSyntheticDefault(file, moduleSymbol, dontResolveAlias); + if (!exportDefaultSymbol && !hasSyntheticDefault) { + if (hasExportAssignmentSymbol(moduleSymbol)) { + var compilerOptionName = moduleKind >= ts.ModuleKind.ES2015 ? "allowSyntheticDefaultImports" : "esModuleInterop"; + var exportEqualsSymbol = moduleSymbol.exports.get("export=" /* ExportEquals */); + var exportAssignment = exportEqualsSymbol.valueDeclaration; + var err = error(node.name, ts.Diagnostics.Module_0_can_only_be_default_imported_using_the_1_flag, symbolToString(moduleSymbol), compilerOptionName); + ts.addRelatedInfo(err, ts.createDiagnosticForNode(exportAssignment, ts.Diagnostics.This_module_is_declared_with_using_export_and_can_only_be_used_with_a_default_import_when_using_the_0_flag, compilerOptionName)); + } + else { + reportNonDefaultExport(moduleSymbol, node); + } + } + else if (hasSyntheticDefault) { + // per emit behavior, a synthetic default overrides a "real" .default member if `__esModule` is not present + var resolved = resolveExternalModuleSymbol(moduleSymbol, dontResolveAlias) || resolveSymbol(moduleSymbol, dontResolveAlias); + markSymbolOfAliasDeclarationIfTypeOnly(node, moduleSymbol, resolved, /*overwriteTypeOnly*/ false); + return resolved; + } + markSymbolOfAliasDeclarationIfTypeOnly(node, exportDefaultSymbol, /*finalTarget*/ undefined, /*overwriteTypeOnly*/ false); + return exportDefaultSymbol; + } + } + function reportNonDefaultExport(moduleSymbol, node) { + var _a, _b; + if ((_a = moduleSymbol.exports) === null || _a === void 0 ? void 0 : _a.has(node.symbol.escapedName)) { + error(node.name, ts.Diagnostics.Module_0_has_no_default_export_Did_you_mean_to_use_import_1_from_0_instead, symbolToString(moduleSymbol), symbolToString(node.symbol)); + } + else { + var diagnostic = error(node.name, ts.Diagnostics.Module_0_has_no_default_export, symbolToString(moduleSymbol)); + var exportStar = (_b = moduleSymbol.exports) === null || _b === void 0 ? void 0 : _b.get("__export" /* ExportStar */); + if (exportStar) { + var defaultExport = ts.find(exportStar.declarations, function (decl) { + var _a, _b; + return !!(ts.isExportDeclaration(decl) && decl.moduleSpecifier && ((_b = (_a = resolveExternalModuleName(decl, decl.moduleSpecifier)) === null || _a === void 0 ? void 0 : _a.exports) === null || _b === void 0 ? void 0 : _b.has("default" /* Default */))); + }); + if (defaultExport) { + ts.addRelatedInfo(diagnostic, ts.createDiagnosticForNode(defaultExport, ts.Diagnostics.export_Asterisk_does_not_re_export_a_default)); + } + } + } + } + function getTargetOfNamespaceImport(node, dontResolveAlias) { + var moduleSpecifier = node.parent.parent.moduleSpecifier; + var immediate = resolveExternalModuleName(node, moduleSpecifier); + var resolved = resolveESModuleSymbol(immediate, moduleSpecifier, dontResolveAlias, /*suppressUsageError*/ false); + markSymbolOfAliasDeclarationIfTypeOnly(node, immediate, resolved, /*overwriteEmpty*/ false); + return resolved; + } + function getTargetOfNamespaceExport(node, dontResolveAlias) { + var moduleSpecifier = node.parent.moduleSpecifier; + var immediate = moduleSpecifier && resolveExternalModuleName(node, moduleSpecifier); + var resolved = moduleSpecifier && resolveESModuleSymbol(immediate, moduleSpecifier, dontResolveAlias, /*suppressUsageError*/ false); + markSymbolOfAliasDeclarationIfTypeOnly(node, immediate, resolved, /*overwriteEmpty*/ false); + return resolved; + } + // This function creates a synthetic symbol that combines the value side of one symbol with the + // type/namespace side of another symbol. Consider this example: + // + // declare module graphics { + // interface Point { + // x: number; + // y: number; + // } + // } + // declare var graphics: { + // Point: new (x: number, y: number) => graphics.Point; + // } + // declare module "graphics" { + // export = graphics; + // } + // + // An 'import { Point } from "graphics"' needs to create a symbol that combines the value side 'Point' + // property with the type/namespace side interface 'Point'. + function combineValueAndTypeSymbols(valueSymbol, typeSymbol) { + if (valueSymbol === unknownSymbol && typeSymbol === unknownSymbol) { + return unknownSymbol; + } + if (valueSymbol.flags & (788968 /* Type */ | 1920 /* Namespace */)) { + return valueSymbol; + } + var result = createSymbol(valueSymbol.flags | typeSymbol.flags, valueSymbol.escapedName); + result.declarations = ts.deduplicate(ts.concatenate(valueSymbol.declarations, typeSymbol.declarations), ts.equateValues); + result.parent = valueSymbol.parent || typeSymbol.parent; + if (valueSymbol.valueDeclaration) + result.valueDeclaration = valueSymbol.valueDeclaration; + if (typeSymbol.members) + result.members = ts.cloneMap(typeSymbol.members); + if (valueSymbol.exports) + result.exports = ts.cloneMap(valueSymbol.exports); + return result; + } + function getExportOfModule(symbol, specifier, dontResolveAlias) { + var _a; + if (symbol.flags & 1536 /* Module */) { + var name = ((_a = specifier.propertyName) !== null && _a !== void 0 ? _a : specifier.name).escapedText; + var exportSymbol = getExportsOfSymbol(symbol).get(name); + var resolved = resolveSymbol(exportSymbol, dontResolveAlias); + markSymbolOfAliasDeclarationIfTypeOnly(specifier, exportSymbol, resolved, /*overwriteEmpty*/ false); + return resolved; + } + } + function getPropertyOfVariable(symbol, name) { + if (symbol.flags & 3 /* Variable */) { + var typeAnnotation = symbol.valueDeclaration.type; + if (typeAnnotation) { + return resolveSymbol(getPropertyOfType(getTypeFromTypeNode(typeAnnotation), name)); + } + } + } + function getExternalModuleMember(node, specifier, dontResolveAlias) { + var _a; + if (dontResolveAlias === void 0) { dontResolveAlias = false; } + var moduleSymbol = resolveExternalModuleName(node, node.moduleSpecifier); // TODO: GH#18217 + var name = specifier.propertyName || specifier.name; + var suppressInteropError = name.escapedText === "default" /* Default */ && !!(compilerOptions.allowSyntheticDefaultImports || compilerOptions.esModuleInterop); + var targetSymbol = resolveESModuleSymbol(moduleSymbol, node.moduleSpecifier, dontResolveAlias, suppressInteropError); + if (targetSymbol) { + if (name.escapedText) { + if (ts.isShorthandAmbientModuleSymbol(moduleSymbol)) { + return moduleSymbol; + } + var symbolFromVariable = void 0; + // First check if module was specified with "export=". If so, get the member from the resolved type + if (moduleSymbol && moduleSymbol.exports && moduleSymbol.exports.get("export=" /* ExportEquals */)) { + symbolFromVariable = getPropertyOfType(getTypeOfSymbol(targetSymbol), name.escapedText); + } + else { + symbolFromVariable = getPropertyOfVariable(targetSymbol, name.escapedText); + } + // if symbolFromVariable is export - get its final target + symbolFromVariable = resolveSymbol(symbolFromVariable, dontResolveAlias); + var symbolFromModule = getExportOfModule(targetSymbol, specifier, dontResolveAlias); + if (symbolFromModule === undefined && name.escapedText === "default" /* Default */) { + var file = ts.find(moduleSymbol.declarations, ts.isSourceFile); + if (canHaveSyntheticDefault(file, moduleSymbol, dontResolveAlias)) { + symbolFromModule = resolveExternalModuleSymbol(moduleSymbol, dontResolveAlias) || resolveSymbol(moduleSymbol, dontResolveAlias); + } + } + var symbol = symbolFromModule && symbolFromVariable && symbolFromModule !== symbolFromVariable ? + combineValueAndTypeSymbols(symbolFromVariable, symbolFromModule) : + symbolFromModule || symbolFromVariable; + if (!symbol) { + var moduleName = getFullyQualifiedName(moduleSymbol, node); + var declarationName = ts.declarationNameToString(name); + var suggestion = getSuggestedSymbolForNonexistentModule(name, targetSymbol); + if (suggestion !== undefined) { + var suggestionName = symbolToString(suggestion); + var diagnostic = error(name, ts.Diagnostics.Module_0_has_no_exported_member_1_Did_you_mean_2, moduleName, declarationName, suggestionName); + if (suggestion.valueDeclaration) { + ts.addRelatedInfo(diagnostic, ts.createDiagnosticForNode(suggestion.valueDeclaration, ts.Diagnostics._0_is_declared_here, suggestionName)); + } + } + else { + if ((_a = moduleSymbol.exports) === null || _a === void 0 ? void 0 : _a.has("default" /* Default */)) { + error(name, ts.Diagnostics.Module_0_has_no_exported_member_1_Did_you_mean_to_use_import_1_from_0_instead, moduleName, declarationName); + } + else { + reportNonExportedMember(node, name, declarationName, moduleSymbol, moduleName); + } + } + } + return symbol; + } + } + } + function reportNonExportedMember(node, name, declarationName, moduleSymbol, moduleName) { + var _a; + var localSymbol = (_a = moduleSymbol.valueDeclaration.locals) === null || _a === void 0 ? void 0 : _a.get(name.escapedText); + var exports = moduleSymbol.exports; + if (localSymbol) { + var exportedEqualsSymbol = exports === null || exports === void 0 ? void 0 : exports.get("export=" /* ExportEquals */); + if (exportedEqualsSymbol) { + getSymbolIfSameReference(exportedEqualsSymbol, localSymbol) ? reportInvalidImportEqualsExportMember(node, name, declarationName, moduleName) : + error(name, ts.Diagnostics.Module_0_has_no_exported_member_1, moduleName, declarationName); + } + else { + var exportedSymbol = exports ? ts.find(symbolsToArray(exports), function (symbol) { return !!getSymbolIfSameReference(symbol, localSymbol); }) : undefined; + var diagnostic = exportedSymbol ? error(name, ts.Diagnostics.Module_0_declares_1_locally_but_it_is_exported_as_2, moduleName, declarationName, symbolToString(exportedSymbol)) : + error(name, ts.Diagnostics.Module_0_declares_1_locally_but_it_is_not_exported, moduleName, declarationName); + ts.addRelatedInfo.apply(void 0, __spreadArrays([diagnostic], ts.map(localSymbol.declarations, function (decl, index) { + return ts.createDiagnosticForNode(decl, index === 0 ? ts.Diagnostics._0_is_declared_here : ts.Diagnostics.and_here, declarationName); + }))); + } + } + else { + error(name, ts.Diagnostics.Module_0_has_no_exported_member_1, moduleName, declarationName); + } + } + function reportInvalidImportEqualsExportMember(node, name, declarationName, moduleName) { + if (moduleKind >= ts.ModuleKind.ES2015) { + var message = compilerOptions.esModuleInterop ? ts.Diagnostics._0_can_only_be_imported_by_using_a_default_import : + ts.Diagnostics._0_can_only_be_imported_by_turning_on_the_esModuleInterop_flag_and_using_a_default_import; + error(name, message, declarationName); + } + else { + if (ts.isInJSFile(node)) { + var message = compilerOptions.esModuleInterop ? ts.Diagnostics._0_can_only_be_imported_by_using_a_require_call_or_by_using_a_default_import : + ts.Diagnostics._0_can_only_be_imported_by_using_a_require_call_or_by_turning_on_the_esModuleInterop_flag_and_using_a_default_import; + error(name, message, declarationName); + } + else { + var message = compilerOptions.esModuleInterop ? ts.Diagnostics._0_can_only_be_imported_by_using_import_1_require_2_or_a_default_import : + ts.Diagnostics._0_can_only_be_imported_by_using_import_1_require_2_or_by_turning_on_the_esModuleInterop_flag_and_using_a_default_import; + error(name, message, declarationName, declarationName, moduleName); + } + } + } + function getTargetOfImportSpecifier(node, dontResolveAlias) { + var resolved = getExternalModuleMember(node.parent.parent.parent, node, dontResolveAlias); + markSymbolOfAliasDeclarationIfTypeOnly(node, /*immediateTarget*/ undefined, resolved, /*overwriteEmpty*/ false); + return resolved; + } + function getTargetOfNamespaceExportDeclaration(node, dontResolveAlias) { + var resolved = resolveExternalModuleSymbol(node.parent.symbol, dontResolveAlias); + markSymbolOfAliasDeclarationIfTypeOnly(node, /*immediateTarget*/ undefined, resolved, /*overwriteEmpty*/ false); + return resolved; + } + function getTargetOfExportSpecifier(node, meaning, dontResolveAlias) { + var resolved = node.parent.parent.moduleSpecifier ? + getExternalModuleMember(node.parent.parent, node, dontResolveAlias) : + resolveEntityName(node.propertyName || node.name, meaning, /*ignoreErrors*/ false, dontResolveAlias); + markSymbolOfAliasDeclarationIfTypeOnly(node, /*immediateTarget*/ undefined, resolved, /*overwriteEmpty*/ false); + return resolved; + } + function getTargetOfExportAssignment(node, dontResolveAlias) { + var expression = ts.isExportAssignment(node) ? node.expression : node.right; + var resolved = getTargetOfAliasLikeExpression(expression, dontResolveAlias); + markSymbolOfAliasDeclarationIfTypeOnly(node, /*immediateTarget*/ undefined, resolved, /*overwriteEmpty*/ false); + return resolved; + } + function getTargetOfAliasLikeExpression(expression, dontResolveAlias) { + if (ts.isClassExpression(expression)) { + return checkExpressionCached(expression).symbol; + } + if (!ts.isEntityName(expression) && !ts.isEntityNameExpression(expression)) { + return undefined; + } + var aliasLike = resolveEntityName(expression, 111551 /* Value */ | 788968 /* Type */ | 1920 /* Namespace */, /*ignoreErrors*/ true, dontResolveAlias); + if (aliasLike) { + return aliasLike; + } + checkExpressionCached(expression); + return getNodeLinks(expression).resolvedSymbol; + } + function getTargetOfPropertyAssignment(node, dontRecursivelyResolve) { + var expression = node.initializer; + return getTargetOfAliasLikeExpression(expression, dontRecursivelyResolve); + } + function getTargetOfPropertyAccessExpression(node, dontRecursivelyResolve) { + if (!(ts.isBinaryExpression(node.parent) && node.parent.left === node && node.parent.operatorToken.kind === 62 /* EqualsToken */)) { + return undefined; + } + return getTargetOfAliasLikeExpression(node.parent.right, dontRecursivelyResolve); + } + function getTargetOfAliasDeclaration(node, dontRecursivelyResolve) { + if (dontRecursivelyResolve === void 0) { dontRecursivelyResolve = false; } + switch (node.kind) { + case 253 /* ImportEqualsDeclaration */: + return getTargetOfImportEqualsDeclaration(node, dontRecursivelyResolve); + case 255 /* ImportClause */: + return getTargetOfImportClause(node, dontRecursivelyResolve); + case 256 /* NamespaceImport */: + return getTargetOfNamespaceImport(node, dontRecursivelyResolve); + case 262 /* NamespaceExport */: + return getTargetOfNamespaceExport(node, dontRecursivelyResolve); + case 258 /* ImportSpecifier */: + return getTargetOfImportSpecifier(node, dontRecursivelyResolve); + case 263 /* ExportSpecifier */: + return getTargetOfExportSpecifier(node, 111551 /* Value */ | 788968 /* Type */ | 1920 /* Namespace */, dontRecursivelyResolve); + case 259 /* ExportAssignment */: + case 209 /* BinaryExpression */: + return getTargetOfExportAssignment(node, dontRecursivelyResolve); + case 252 /* NamespaceExportDeclaration */: + return getTargetOfNamespaceExportDeclaration(node, dontRecursivelyResolve); + case 282 /* ShorthandPropertyAssignment */: + return resolveEntityName(node.name, 111551 /* Value */ | 788968 /* Type */ | 1920 /* Namespace */, /*ignoreErrors*/ true, dontRecursivelyResolve); + case 281 /* PropertyAssignment */: + return getTargetOfPropertyAssignment(node, dontRecursivelyResolve); + case 194 /* PropertyAccessExpression */: + return getTargetOfPropertyAccessExpression(node, dontRecursivelyResolve); + default: + return ts.Debug.fail(); + } + } + /** + * Indicates that a symbol is an alias that does not merge with a local declaration. + * OR Is a JSContainer which may merge an alias with a local declaration + */ + function isNonLocalAlias(symbol, excludes) { + if (excludes === void 0) { excludes = 111551 /* Value */ | 788968 /* Type */ | 1920 /* Namespace */; } + if (!symbol) + return false; + return (symbol.flags & (2097152 /* Alias */ | excludes)) === 2097152 /* Alias */ || !!(symbol.flags & 2097152 /* Alias */ && symbol.flags & 67108864 /* Assignment */); + } + function resolveSymbol(symbol, dontResolveAlias) { + return !dontResolveAlias && isNonLocalAlias(symbol) ? resolveAlias(symbol) : symbol; + } + function resolveAlias(symbol) { + ts.Debug.assert((symbol.flags & 2097152 /* Alias */) !== 0, "Should only get Alias here."); + var links = getSymbolLinks(symbol); + if (!links.target) { + links.target = resolvingSymbol; + var node = getDeclarationOfAliasSymbol(symbol); + if (!node) + return ts.Debug.fail(); + var target = getTargetOfAliasDeclaration(node); + if (links.target === resolvingSymbol) { + links.target = target || unknownSymbol; + } + else { + error(node, ts.Diagnostics.Circular_definition_of_import_alias_0, symbolToString(symbol)); + } + } + else if (links.target === resolvingSymbol) { + links.target = unknownSymbol; + } + return links.target; + } + function tryResolveAlias(symbol) { + var links = getSymbolLinks(symbol); + if (links.target !== resolvingSymbol) { + return resolveAlias(symbol); + } + return undefined; + } + /** + * Marks a symbol as type-only if its declaration is syntactically type-only. + * If it is not itself marked type-only, but resolves to a type-only alias + * somewhere in its resolution chain, save a reference to the type-only alias declaration + * so the alias _not_ marked type-only can be identified as _transitively_ type-only. + * + * This function is called on each alias declaration that could be type-only or resolve to + * another type-only alias during `resolveAlias`, so that later, when an alias is used in a + * JS-emitting expression, we can quickly determine if that symbol is effectively type-only + * and issue an error if so. + * + * @param aliasDeclaration The alias declaration not marked as type-only + * has already been marked as not resolving to a type-only alias. Used when recursively resolving qualified + * names of import aliases, e.g. `import C = a.b.C`. If namespace `a` is not found to be type-only, the + * import declaration will initially be marked as not resolving to a type-only symbol. But, namespace `b` + * must still be checked for a type-only marker, overwriting the previous negative result if found. + * @param immediateTarget The symbol to which the alias declaration immediately resolves + * @param finalTarget The symbol to which the alias declaration ultimately resolves + * @param overwriteEmpty Checks `resolvesToSymbol` for type-only declarations even if `aliasDeclaration` + */ + function markSymbolOfAliasDeclarationIfTypeOnly(aliasDeclaration, immediateTarget, finalTarget, overwriteEmpty) { + if (!aliasDeclaration) + return false; + // If the declaration itself is type-only, mark it and return. + // No need to check what it resolves to. + var sourceSymbol = getSymbolOfNode(aliasDeclaration); + if (ts.isTypeOnlyImportOrExportDeclaration(aliasDeclaration)) { + var links_1 = getSymbolLinks(sourceSymbol); + links_1.typeOnlyDeclaration = aliasDeclaration; + return true; + } + var links = getSymbolLinks(sourceSymbol); + return markSymbolOfAliasDeclarationIfTypeOnlyWorker(links, immediateTarget, overwriteEmpty) + || markSymbolOfAliasDeclarationIfTypeOnlyWorker(links, finalTarget, overwriteEmpty); + } + function markSymbolOfAliasDeclarationIfTypeOnlyWorker(aliasDeclarationLinks, target, overwriteEmpty) { + var _a, _b, _c; + if (target && (aliasDeclarationLinks.typeOnlyDeclaration === undefined || overwriteEmpty && aliasDeclarationLinks.typeOnlyDeclaration === false)) { + var exportSymbol = (_b = (_a = target.exports) === null || _a === void 0 ? void 0 : _a.get("export=" /* ExportEquals */)) !== null && _b !== void 0 ? _b : target; + var typeOnly = exportSymbol.declarations && ts.find(exportSymbol.declarations, ts.isTypeOnlyImportOrExportDeclaration); + aliasDeclarationLinks.typeOnlyDeclaration = (_c = typeOnly !== null && typeOnly !== void 0 ? typeOnly : getSymbolLinks(exportSymbol).typeOnlyDeclaration) !== null && _c !== void 0 ? _c : false; + } + return !!aliasDeclarationLinks.typeOnlyDeclaration; + } + /** Indicates that a symbol directly or indirectly resolves to a type-only import or export. */ + function getTypeOnlyAliasDeclaration(symbol) { + if (!(symbol.flags & 2097152 /* Alias */)) { + return undefined; + } + var links = getSymbolLinks(symbol); + return links.typeOnlyDeclaration || undefined; + } + function markExportAsReferenced(node) { + var symbol = getSymbolOfNode(node); + var target = resolveAlias(symbol); + if (target) { + var markAlias = target === unknownSymbol || + ((target.flags & 111551 /* Value */) && !isConstEnumOrConstEnumOnlyModule(target) && !getTypeOnlyAliasDeclaration(symbol)); + if (markAlias) { + markAliasSymbolAsReferenced(symbol); + } + } + } + // When an alias symbol is referenced, we need to mark the entity it references as referenced and in turn repeat that until + // we reach a non-alias or an exported entity (which is always considered referenced). We do this by checking the target of + // the alias as an expression (which recursively takes us back here if the target references another alias). + function markAliasSymbolAsReferenced(symbol) { + var links = getSymbolLinks(symbol); + if (!links.referenced) { + links.referenced = true; + var node = getDeclarationOfAliasSymbol(symbol); + if (!node) + return ts.Debug.fail(); + // We defer checking of the reference of an `import =` until the import itself is referenced, + // This way a chain of imports can be elided if ultimately the final input is only used in a type + // position. + if (ts.isInternalModuleImportEqualsDeclaration(node)) { + var target = resolveSymbol(symbol); + if (target === unknownSymbol || target.flags & 111551 /* Value */) { + // import foo = + checkExpressionCached(node.moduleReference); + } + } + } + } + // Aliases that resolve to const enums are not marked as referenced because they are not emitted, + // but their usage in value positions must be tracked to determine if the import can be type-only. + function markConstEnumAliasAsReferenced(symbol) { + var links = getSymbolLinks(symbol); + if (!links.constEnumReferenced) { + links.constEnumReferenced = true; + } + } + // This function is only for imports with entity names + function getSymbolOfPartOfRightHandSideOfImportEquals(entityName, dontResolveAlias) { + // There are three things we might try to look for. In the following examples, + // the search term is enclosed in |...|: + // + // import a = |b|; // Namespace + // import a = |b.c|; // Value, type, namespace + // import a = |b.c|.d; // Namespace + if (entityName.kind === 75 /* Identifier */ && ts.isRightSideOfQualifiedNameOrPropertyAccess(entityName)) { + entityName = entityName.parent; + } + // Check for case 1 and 3 in the above example + if (entityName.kind === 75 /* Identifier */ || entityName.parent.kind === 153 /* QualifiedName */) { + return resolveEntityName(entityName, 1920 /* Namespace */, /*ignoreErrors*/ false, dontResolveAlias); + } + else { + // Case 2 in above example + // entityName.kind could be a QualifiedName or a Missing identifier + ts.Debug.assert(entityName.parent.kind === 253 /* ImportEqualsDeclaration */); + return resolveEntityName(entityName, 111551 /* Value */ | 788968 /* Type */ | 1920 /* Namespace */, /*ignoreErrors*/ false, dontResolveAlias); + } + } + function getFullyQualifiedName(symbol, containingLocation) { + return symbol.parent ? getFullyQualifiedName(symbol.parent, containingLocation) + "." + symbolToString(symbol) : symbolToString(symbol, containingLocation, /*meaning*/ undefined, 16 /* DoNotIncludeSymbolChain */ | 4 /* AllowAnyNodeKind */); + } + /** + * Resolves a qualified name and any involved aliases. + */ + function resolveEntityName(name, meaning, ignoreErrors, dontResolveAlias, location) { + if (ts.nodeIsMissing(name)) { + return undefined; + } + var namespaceMeaning = 1920 /* Namespace */ | (ts.isInJSFile(name) ? meaning & 111551 /* Value */ : 0); + var symbol; + if (name.kind === 75 /* Identifier */) { + var message = meaning === namespaceMeaning || ts.nodeIsSynthesized(name) ? ts.Diagnostics.Cannot_find_namespace_0 : getCannotFindNameDiagnosticForName(ts.getFirstIdentifier(name)); + var symbolFromJSPrototype = ts.isInJSFile(name) && !ts.nodeIsSynthesized(name) ? resolveEntityNameFromAssignmentDeclaration(name, meaning) : undefined; + symbol = getMergedSymbol(resolveName(location || name, name.escapedText, meaning, ignoreErrors || symbolFromJSPrototype ? undefined : message, name, /*isUse*/ true)); + if (!symbol) { + return getMergedSymbol(symbolFromJSPrototype); + } + } + else if (name.kind === 153 /* QualifiedName */ || name.kind === 194 /* PropertyAccessExpression */) { + var left = name.kind === 153 /* QualifiedName */ ? name.left : name.expression; + var right = name.kind === 153 /* QualifiedName */ ? name.right : name.name; + var namespace = resolveEntityName(left, namespaceMeaning, ignoreErrors, /*dontResolveAlias*/ false, location); + if (!namespace || ts.nodeIsMissing(right)) { + return undefined; + } + else if (namespace === unknownSymbol) { + return namespace; + } + if (ts.isInJSFile(name)) { + if (namespace.valueDeclaration && + ts.isVariableDeclaration(namespace.valueDeclaration) && + namespace.valueDeclaration.initializer && + isCommonJsRequire(namespace.valueDeclaration.initializer)) { + var moduleName = namespace.valueDeclaration.initializer.arguments[0]; + var moduleSym = resolveExternalModuleName(moduleName, moduleName); + if (moduleSym) { + var resolvedModuleSymbol = resolveExternalModuleSymbol(moduleSym); + if (resolvedModuleSymbol) { + namespace = resolvedModuleSymbol; + } + } + } + } + symbol = getMergedSymbol(getSymbol(getExportsOfSymbol(namespace), right.escapedText, meaning)); + if (!symbol) { + if (!ignoreErrors) { + error(right, ts.Diagnostics.Namespace_0_has_no_exported_member_1, getFullyQualifiedName(namespace), ts.declarationNameToString(right)); + } + return undefined; + } + } + else { + throw ts.Debug.assertNever(name, "Unknown entity name kind."); + } + ts.Debug.assert((ts.getCheckFlags(symbol) & 1 /* Instantiated */) === 0, "Should never get an instantiated symbol here."); + if (!ts.nodeIsSynthesized(name) && ts.isEntityName(name) && (symbol.flags & 2097152 /* Alias */ || name.parent.kind === 259 /* ExportAssignment */)) { + markSymbolOfAliasDeclarationIfTypeOnly(ts.getAliasDeclarationFromName(name), symbol, /*finalTarget*/ undefined, /*overwriteEmpty*/ true); + } + return (symbol.flags & meaning) || dontResolveAlias ? symbol : resolveAlias(symbol); + } + /** + * 1. For prototype-property methods like `A.prototype.m = function () ...`, try to resolve names in the scope of `A` too. + * Note that prototype-property assignment to locations outside the current file (eg globals) doesn't work, so + * name resolution won't work either. + * 2. For property assignments like `{ x: function f () { } }`, try to resolve names in the scope of `f` too. + */ + function resolveEntityNameFromAssignmentDeclaration(name, meaning) { + if (isJSDocTypeReference(name.parent)) { + var secondaryLocation = getAssignmentDeclarationLocation(name.parent); + if (secondaryLocation) { + return resolveName(secondaryLocation, name.escapedText, meaning, /*nameNotFoundMessage*/ undefined, name, /*isUse*/ true); + } + } + } + function getAssignmentDeclarationLocation(node) { + var typeAlias = ts.findAncestor(node, function (node) { return !(ts.isJSDocNode(node) || node.flags & 4194304 /* JSDoc */) ? "quit" : ts.isJSDocTypeAlias(node); }); + if (typeAlias) { + return; + } + var host = ts.getJSDocHost(node); + if (ts.isExpressionStatement(host) && + ts.isBinaryExpression(host.expression) && + ts.getAssignmentDeclarationKind(host.expression) === 3 /* PrototypeProperty */) { + // X.prototype.m = /** @param {K} p */ function () { } <-- look for K on X's declaration + var symbol = getSymbolOfNode(host.expression.left); + if (symbol) { + return getDeclarationOfJSPrototypeContainer(symbol); + } + } + if ((ts.isObjectLiteralMethod(host) || ts.isPropertyAssignment(host)) && + ts.isBinaryExpression(host.parent.parent) && + ts.getAssignmentDeclarationKind(host.parent.parent) === 6 /* Prototype */) { + // X.prototype = { /** @param {K} p */m() { } } <-- look for K on X's declaration + var symbol = getSymbolOfNode(host.parent.parent.left); + if (symbol) { + return getDeclarationOfJSPrototypeContainer(symbol); + } + } + var sig = ts.getEffectiveJSDocHost(node); + if (sig && ts.isFunctionLike(sig)) { + var symbol = getSymbolOfNode(sig); + return symbol && symbol.valueDeclaration; + } + } + function getDeclarationOfJSPrototypeContainer(symbol) { + var decl = symbol.parent.valueDeclaration; + if (!decl) { + return undefined; + } + var initializer = ts.isAssignmentDeclaration(decl) ? ts.getAssignedExpandoInitializer(decl) : + ts.hasOnlyExpressionInitializer(decl) ? ts.getDeclaredExpandoInitializer(decl) : + undefined; + return initializer || decl; + } + /** + * Get the real symbol of a declaration with an expando initializer. + * + * Normally, declarations have an associated symbol, but when a declaration has an expando + * initializer, the expando's symbol is the one that has all the members merged into it. + */ + function getExpandoSymbol(symbol) { + var decl = symbol.valueDeclaration; + if (!decl || !ts.isInJSFile(decl) || symbol.flags & 524288 /* TypeAlias */ || ts.getExpandoInitializer(decl, /*isPrototypeAssignment*/ false)) { + return undefined; + } + var init = ts.isVariableDeclaration(decl) ? ts.getDeclaredExpandoInitializer(decl) : ts.getAssignedExpandoInitializer(decl); + if (init) { + var initSymbol = getSymbolOfNode(init); + if (initSymbol) { + return mergeJSSymbols(initSymbol, symbol); + } + } + } + function resolveExternalModuleName(location, moduleReferenceExpression, ignoreErrors) { + return resolveExternalModuleNameWorker(location, moduleReferenceExpression, ignoreErrors ? undefined : ts.Diagnostics.Cannot_find_module_0_or_its_corresponding_type_declarations); + } + function resolveExternalModuleNameWorker(location, moduleReferenceExpression, moduleNotFoundError, isForAugmentation) { + if (isForAugmentation === void 0) { isForAugmentation = false; } + return ts.isStringLiteralLike(moduleReferenceExpression) + ? resolveExternalModule(location, moduleReferenceExpression.text, moduleNotFoundError, moduleReferenceExpression, isForAugmentation) + : undefined; + } + function resolveExternalModule(location, moduleReference, moduleNotFoundError, errorNode, isForAugmentation) { + if (isForAugmentation === void 0) { isForAugmentation = false; } + if (ts.startsWith(moduleReference, "@types/")) { + var diag = ts.Diagnostics.Cannot_import_type_declaration_files_Consider_importing_0_instead_of_1; + var withoutAtTypePrefix = ts.removePrefix(moduleReference, "@types/"); + error(errorNode, diag, withoutAtTypePrefix, moduleReference); + } + var ambientModule = tryFindAmbientModule(moduleReference, /*withAugmentations*/ true); + if (ambientModule) { + return ambientModule; + } + var currentSourceFile = ts.getSourceFileOfNode(location); + var resolvedModule = ts.getResolvedModule(currentSourceFile, moduleReference); // TODO: GH#18217 + var resolutionDiagnostic = resolvedModule && ts.getResolutionDiagnostic(compilerOptions, resolvedModule); + var sourceFile = resolvedModule && !resolutionDiagnostic && host.getSourceFile(resolvedModule.resolvedFileName); + if (sourceFile) { + if (sourceFile.symbol) { + if (resolvedModule.isExternalLibraryImport && !ts.resolutionExtensionIsTSOrJson(resolvedModule.extension)) { + errorOnImplicitAnyModule(/*isError*/ false, errorNode, resolvedModule, moduleReference); + } + // merged symbol is module declaration symbol combined with all augmentations + return getMergedSymbol(sourceFile.symbol); + } + if (moduleNotFoundError) { + // report errors only if it was requested + error(errorNode, ts.Diagnostics.File_0_is_not_a_module, sourceFile.fileName); + } + return undefined; + } + if (patternAmbientModules) { + var pattern = ts.findBestPatternMatch(patternAmbientModules, function (_) { return _.pattern; }, moduleReference); + if (pattern) { + // If the module reference matched a pattern ambient module ('*.foo') but there's also a + // module augmentation by the specific name requested ('a.foo'), we store the merged symbol + // by the augmentation name ('a.foo'), because asking for *.foo should not give you exports + // from a.foo. + var augmentation = patternAmbientModuleAugmentations && patternAmbientModuleAugmentations.get(moduleReference); + if (augmentation) { + return getMergedSymbol(augmentation); + } + return getMergedSymbol(pattern.symbol); + } + } + // May be an untyped module. If so, ignore resolutionDiagnostic. + if (resolvedModule && !ts.resolutionExtensionIsTSOrJson(resolvedModule.extension) && resolutionDiagnostic === undefined || resolutionDiagnostic === ts.Diagnostics.Could_not_find_a_declaration_file_for_module_0_1_implicitly_has_an_any_type) { + if (isForAugmentation) { + var diag = ts.Diagnostics.Invalid_module_name_in_augmentation_Module_0_resolves_to_an_untyped_module_at_1_which_cannot_be_augmented; + error(errorNode, diag, moduleReference, resolvedModule.resolvedFileName); + } + else { + errorOnImplicitAnyModule(/*isError*/ noImplicitAny && !!moduleNotFoundError, errorNode, resolvedModule, moduleReference); + } + // Failed imports and untyped modules are both treated in an untyped manner; only difference is whether we give a diagnostic first. + return undefined; + } + if (moduleNotFoundError) { + // See if this was possibly a projectReference redirect + if (resolvedModule) { + var redirect = host.getProjectReferenceRedirect(resolvedModule.resolvedFileName); + if (redirect) { + error(errorNode, ts.Diagnostics.Output_file_0_has_not_been_built_from_source_file_1, redirect, resolvedModule.resolvedFileName); + return undefined; + } + } + if (resolutionDiagnostic) { + error(errorNode, resolutionDiagnostic, moduleReference, resolvedModule.resolvedFileName); + } + else { + var tsExtension = ts.tryExtractTSExtension(moduleReference); + if (tsExtension) { + var diag = ts.Diagnostics.An_import_path_cannot_end_with_a_0_extension_Consider_importing_1_instead; + error(errorNode, diag, tsExtension, ts.removeExtension(moduleReference, tsExtension)); + } + else if (!compilerOptions.resolveJsonModule && + ts.fileExtensionIs(moduleReference, ".json" /* Json */) && + ts.getEmitModuleResolutionKind(compilerOptions) === ts.ModuleResolutionKind.NodeJs && + ts.hasJsonModuleEmitEnabled(compilerOptions)) { + error(errorNode, ts.Diagnostics.Cannot_find_module_0_Consider_using_resolveJsonModule_to_import_module_with_json_extension, moduleReference); + } + else { + error(errorNode, moduleNotFoundError, moduleReference); + } + } + } + return undefined; + } + function errorOnImplicitAnyModule(isError, errorNode, _a, moduleReference) { + var packageId = _a.packageId, resolvedFileName = _a.resolvedFileName; + var errorInfo = !ts.isExternalModuleNameRelative(moduleReference) && packageId + ? typesPackageExists(packageId.name) + ? ts.chainDiagnosticMessages( + /*details*/ undefined, ts.Diagnostics.If_the_0_package_actually_exposes_this_module_consider_sending_a_pull_request_to_amend_https_Colon_Slash_Slashgithub_com_SlashDefinitelyTyped_SlashDefinitelyTyped_Slashtree_Slashmaster_Slashtypes_Slash_1, packageId.name, ts.mangleScopedPackageName(packageId.name)) + : ts.chainDiagnosticMessages( + /*details*/ undefined, ts.Diagnostics.Try_npm_install_types_Slash_1_if_it_exists_or_add_a_new_declaration_d_ts_file_containing_declare_module_0, moduleReference, ts.mangleScopedPackageName(packageId.name)) + : undefined; + errorOrSuggestion(isError, errorNode, ts.chainDiagnosticMessages(errorInfo, ts.Diagnostics.Could_not_find_a_declaration_file_for_module_0_1_implicitly_has_an_any_type, moduleReference, resolvedFileName)); + } + function typesPackageExists(packageName) { + return getPackagesSet().has(ts.getTypesPackageName(packageName)); + } + function resolveExternalModuleSymbol(moduleSymbol, dontResolveAlias) { + if (moduleSymbol === null || moduleSymbol === void 0 ? void 0 : moduleSymbol.exports) { + var exportEquals = resolveSymbol(moduleSymbol.exports.get("export=" /* ExportEquals */), dontResolveAlias); + var exported = getCommonJsExportEquals(getMergedSymbol(exportEquals), getMergedSymbol(moduleSymbol)); + return getMergedSymbol(exported) || moduleSymbol; + } + return undefined; + } + function getCommonJsExportEquals(exported, moduleSymbol) { + if (!exported || exported === unknownSymbol || exported === moduleSymbol || moduleSymbol.exports.size === 1 || exported.flags & 2097152 /* Alias */) { + return exported; + } + var links = getSymbolLinks(exported); + if (links.cjsExportMerged) { + return links.cjsExportMerged; + } + var merged = exported.flags & 33554432 /* Transient */ ? exported : cloneSymbol(exported); + merged.flags = merged.flags | 512 /* ValueModule */; + if (merged.exports === undefined) { + merged.exports = ts.createSymbolTable(); + } + moduleSymbol.exports.forEach(function (s, name) { + if (name === "export=" /* ExportEquals */) + return; + merged.exports.set(name, merged.exports.has(name) ? mergeSymbol(merged.exports.get(name), s) : s); + }); + getSymbolLinks(merged).cjsExportMerged = merged; + return links.cjsExportMerged = merged; + } + // An external module with an 'export =' declaration may be referenced as an ES6 module provided the 'export =' + // references a symbol that is at least declared as a module or a variable. The target of the 'export =' may + // combine other declarations with the module or variable (e.g. a class/module, function/module, interface/variable). + function resolveESModuleSymbol(moduleSymbol, referencingLocation, dontResolveAlias, suppressInteropError) { + var symbol = resolveExternalModuleSymbol(moduleSymbol, dontResolveAlias); + if (!dontResolveAlias && symbol) { + if (!suppressInteropError && !(symbol.flags & (1536 /* Module */ | 3 /* Variable */)) && !ts.getDeclarationOfKind(symbol, 290 /* SourceFile */)) { + var compilerOptionName = moduleKind >= ts.ModuleKind.ES2015 + ? "allowSyntheticDefaultImports" + : "esModuleInterop"; + error(referencingLocation, ts.Diagnostics.This_module_can_only_be_referenced_with_ECMAScript_imports_Slashexports_by_turning_on_the_0_flag_and_referencing_its_default_export, compilerOptionName); + return symbol; + } + if (compilerOptions.esModuleInterop) { + var referenceParent = referencingLocation.parent; + if ((ts.isImportDeclaration(referenceParent) && ts.getNamespaceDeclarationNode(referenceParent)) || + ts.isImportCall(referenceParent)) { + var type = getTypeOfSymbol(symbol); + var sigs = getSignaturesOfStructuredType(type, 0 /* Call */); + if (!sigs || !sigs.length) { + sigs = getSignaturesOfStructuredType(type, 1 /* Construct */); + } + if (sigs && sigs.length) { + var moduleType = getTypeWithSyntheticDefaultImportType(type, symbol, moduleSymbol); + // Create a new symbol which has the module's type less the call and construct signatures + var result = createSymbol(symbol.flags, symbol.escapedName); + result.declarations = symbol.declarations ? symbol.declarations.slice() : []; + result.parent = symbol.parent; + result.target = symbol; + result.originatingImport = referenceParent; + if (symbol.valueDeclaration) + result.valueDeclaration = symbol.valueDeclaration; + if (symbol.constEnumOnlyModule) + result.constEnumOnlyModule = true; + if (symbol.members) + result.members = ts.cloneMap(symbol.members); + if (symbol.exports) + result.exports = ts.cloneMap(symbol.exports); + var resolvedModuleType = resolveStructuredTypeMembers(moduleType); // Should already be resolved from the signature checks above + result.type = createAnonymousType(result, resolvedModuleType.members, ts.emptyArray, ts.emptyArray, resolvedModuleType.stringIndexInfo, resolvedModuleType.numberIndexInfo); + return result; + } + } + } + } + return symbol; + } + function hasExportAssignmentSymbol(moduleSymbol) { + return moduleSymbol.exports.get("export=" /* ExportEquals */) !== undefined; + } + function getExportsOfModuleAsArray(moduleSymbol) { + return symbolsToArray(getExportsOfModule(moduleSymbol)); + } + function getExportsAndPropertiesOfModule(moduleSymbol) { + var exports = getExportsOfModuleAsArray(moduleSymbol); + var exportEquals = resolveExternalModuleSymbol(moduleSymbol); + if (exportEquals !== moduleSymbol) { + ts.addRange(exports, getPropertiesOfType(getTypeOfSymbol(exportEquals))); + } + return exports; + } + function tryGetMemberInModuleExports(memberName, moduleSymbol) { + var symbolTable = getExportsOfModule(moduleSymbol); + if (symbolTable) { + return symbolTable.get(memberName); + } + } + function tryGetMemberInModuleExportsAndProperties(memberName, moduleSymbol) { + var symbol = tryGetMemberInModuleExports(memberName, moduleSymbol); + if (symbol) { + return symbol; + } + var exportEquals = resolveExternalModuleSymbol(moduleSymbol); + if (exportEquals === moduleSymbol) { + return undefined; + } + var type = getTypeOfSymbol(exportEquals); + return type.flags & 131068 /* Primitive */ || + ts.getObjectFlags(type) & 1 /* Class */ || + isArrayOrTupleLikeType(type) + ? undefined + : getPropertyOfType(type, memberName); + } + function getExportsOfSymbol(symbol) { + return symbol.flags & 6256 /* LateBindingContainer */ ? getResolvedMembersOrExportsOfSymbol(symbol, "resolvedExports" /* resolvedExports */) : + symbol.flags & 1536 /* Module */ ? getExportsOfModule(symbol) : + symbol.exports || emptySymbols; + } + function getExportsOfModule(moduleSymbol) { + var links = getSymbolLinks(moduleSymbol); + return links.resolvedExports || (links.resolvedExports = getExportsOfModuleWorker(moduleSymbol)); + } + /** + * Extends one symbol table with another while collecting information on name collisions for error message generation into the `lookupTable` argument + * Not passing `lookupTable` and `exportNode` disables this collection, and just extends the tables + */ + function extendExportSymbols(target, source, lookupTable, exportNode) { + if (!source) + return; + source.forEach(function (sourceSymbol, id) { + if (id === "default" /* Default */) + return; + var targetSymbol = target.get(id); + if (!targetSymbol) { + target.set(id, sourceSymbol); + if (lookupTable && exportNode) { + lookupTable.set(id, { + specifierText: ts.getTextOfNode(exportNode.moduleSpecifier) + }); + } + } + else if (lookupTable && exportNode && targetSymbol && resolveSymbol(targetSymbol) !== resolveSymbol(sourceSymbol)) { + var collisionTracker = lookupTable.get(id); + if (!collisionTracker.exportsWithDuplicate) { + collisionTracker.exportsWithDuplicate = [exportNode]; + } + else { + collisionTracker.exportsWithDuplicate.push(exportNode); + } + } + }); + } + function getExportsOfModuleWorker(moduleSymbol) { + var visitedSymbols = []; + // A module defined by an 'export=' consists of one export that needs to be resolved + moduleSymbol = resolveExternalModuleSymbol(moduleSymbol); + return visit(moduleSymbol) || emptySymbols; + // The ES6 spec permits export * declarations in a module to circularly reference the module itself. For example, + // module 'a' can 'export * from "b"' and 'b' can 'export * from "a"' without error. + function visit(symbol) { + if (!(symbol && symbol.exports && ts.pushIfUnique(visitedSymbols, symbol))) { + return; + } + var symbols = ts.cloneMap(symbol.exports); + // All export * declarations are collected in an __export symbol by the binder + var exportStars = symbol.exports.get("__export" /* ExportStar */); + if (exportStars) { + var nestedSymbols = ts.createSymbolTable(); + var lookupTable_1 = ts.createMap(); + for (var _i = 0, _a = exportStars.declarations; _i < _a.length; _i++) { + var node = _a[_i]; + var resolvedModule = resolveExternalModuleName(node, node.moduleSpecifier); + var exportedSymbols = visit(resolvedModule); + extendExportSymbols(nestedSymbols, exportedSymbols, lookupTable_1, node); + } + lookupTable_1.forEach(function (_a, id) { + var exportsWithDuplicate = _a.exportsWithDuplicate; + // It's not an error if the file with multiple `export *`s with duplicate names exports a member with that name itself + if (id === "export=" || !(exportsWithDuplicate && exportsWithDuplicate.length) || symbols.has(id)) { + return; + } + for (var _i = 0, exportsWithDuplicate_1 = exportsWithDuplicate; _i < exportsWithDuplicate_1.length; _i++) { + var node = exportsWithDuplicate_1[_i]; + diagnostics.add(ts.createDiagnosticForNode(node, ts.Diagnostics.Module_0_has_already_exported_a_member_named_1_Consider_explicitly_re_exporting_to_resolve_the_ambiguity, lookupTable_1.get(id).specifierText, ts.unescapeLeadingUnderscores(id))); + } + }); + extendExportSymbols(symbols, nestedSymbols); + } + return symbols; + } + } + function getMergedSymbol(symbol) { + var merged; + return symbol && symbol.mergeId && (merged = mergedSymbols[symbol.mergeId]) ? merged : symbol; + } + function getSymbolOfNode(node) { + return getMergedSymbol(node.symbol && getLateBoundSymbol(node.symbol)); + } + function getParentOfSymbol(symbol) { + return getMergedSymbol(symbol.parent && getLateBoundSymbol(symbol.parent)); + } + function getAlternativeContainingModules(symbol, enclosingDeclaration) { + var containingFile = ts.getSourceFileOfNode(enclosingDeclaration); + var id = "" + getNodeId(containingFile); + var links = getSymbolLinks(symbol); + var results; + if (links.extendedContainersByFile && (results = links.extendedContainersByFile.get(id))) { + return results; + } + if (containingFile && containingFile.imports) { + // Try to make an import using an import already in the enclosing file, if possible + for (var _i = 0, _a = containingFile.imports; _i < _a.length; _i++) { + var importRef = _a[_i]; + if (ts.nodeIsSynthesized(importRef)) + continue; // Synthetic names can't be resolved by `resolveExternalModuleName` - they'll cause a debug assert if they error + var resolvedModule = resolveExternalModuleName(enclosingDeclaration, importRef, /*ignoreErrors*/ true); + if (!resolvedModule) + continue; + var ref = getAliasForSymbolInContainer(resolvedModule, symbol); + if (!ref) + continue; + results = ts.append(results, resolvedModule); + } + if (ts.length(results)) { + (links.extendedContainersByFile || (links.extendedContainersByFile = ts.createMap())).set(id, results); + return results; + } + } + if (links.extendedContainers) { + return links.extendedContainers; + } + // No results from files already being imported by this file - expand search (expensive, but not location-specific, so cached) + var otherFiles = host.getSourceFiles(); + for (var _b = 0, otherFiles_1 = otherFiles; _b < otherFiles_1.length; _b++) { + var file = otherFiles_1[_b]; + if (!ts.isExternalModule(file)) + continue; + var sym = getSymbolOfNode(file); + var ref = getAliasForSymbolInContainer(sym, symbol); + if (!ref) + continue; + results = ts.append(results, sym); + } + return links.extendedContainers = results || ts.emptyArray; + } + /** + * Attempts to find the symbol corresponding to the container a symbol is in - usually this + * is just its' `.parent`, but for locals, this value is `undefined` + */ + function getContainersOfSymbol(symbol, enclosingDeclaration) { + var container = getParentOfSymbol(symbol); + // Type parameters end up in the `members` lists but are not externally visible + if (container && !(symbol.flags & 262144 /* TypeParameter */)) { + var additionalContainers = ts.mapDefined(container.declarations, fileSymbolIfFileSymbolExportEqualsContainer); + var reexportContainers = enclosingDeclaration && getAlternativeContainingModules(symbol, enclosingDeclaration); + if (enclosingDeclaration && getAccessibleSymbolChain(container, enclosingDeclaration, 1920 /* Namespace */, /*externalOnly*/ false)) { + return ts.concatenate(ts.concatenate([container], additionalContainers), reexportContainers); // This order expresses a preference for the real container if it is in scope + } + var res = ts.append(additionalContainers, container); + return ts.concatenate(res, reexportContainers); + } + var candidates = ts.mapDefined(symbol.declarations, function (d) { + if (!ts.isAmbientModule(d) && d.parent && hasNonGlobalAugmentationExternalModuleSymbol(d.parent)) { + return getSymbolOfNode(d.parent); + } + if (ts.isClassExpression(d) && ts.isBinaryExpression(d.parent) && d.parent.operatorToken.kind === 62 /* EqualsToken */ && ts.isAccessExpression(d.parent.left) && ts.isEntityNameExpression(d.parent.left.expression)) { + if (ts.isModuleExportsAccessExpression(d.parent.left) || ts.isExportsIdentifier(d.parent.left.expression)) { + return getSymbolOfNode(ts.getSourceFileOfNode(d)); + } + checkExpressionCached(d.parent.left.expression); + return getNodeLinks(d.parent.left.expression).resolvedSymbol; + } + }); + if (!ts.length(candidates)) { + return undefined; + } + return ts.mapDefined(candidates, function (candidate) { return getAliasForSymbolInContainer(candidate, symbol) ? candidate : undefined; }); + function fileSymbolIfFileSymbolExportEqualsContainer(d) { + return container && getFileSymbolIfFileSymbolExportEqualsContainer(d, container); + } + } + function getFileSymbolIfFileSymbolExportEqualsContainer(d, container) { + var fileSymbol = getExternalModuleContainer(d); + var exported = fileSymbol && fileSymbol.exports && fileSymbol.exports.get("export=" /* ExportEquals */); + return exported && getSymbolIfSameReference(exported, container) ? fileSymbol : undefined; + } + function getAliasForSymbolInContainer(container, symbol) { + if (container === getParentOfSymbol(symbol)) { + // fast path, `symbol` is either already the alias or isn't aliased + return symbol; + } + // Check if container is a thing with an `export=` which points directly at `symbol`, and if so, return + // the container itself as the alias for the symbol + var exportEquals = container.exports && container.exports.get("export=" /* ExportEquals */); + if (exportEquals && getSymbolIfSameReference(exportEquals, symbol)) { + return container; + } + var exports = getExportsOfSymbol(container); + var quick = exports.get(symbol.escapedName); + if (quick && getSymbolIfSameReference(quick, symbol)) { + return quick; + } + return ts.forEachEntry(exports, function (exported) { + if (getSymbolIfSameReference(exported, symbol)) { + return exported; + } + }); + } + /** + * Checks if two symbols, through aliasing and/or merging, refer to the same thing + */ + function getSymbolIfSameReference(s1, s2) { + if (getMergedSymbol(resolveSymbol(getMergedSymbol(s1))) === getMergedSymbol(resolveSymbol(getMergedSymbol(s2)))) { + return s1; + } + } + function getExportSymbolOfValueSymbolIfExported(symbol) { + return getMergedSymbol(symbol && (symbol.flags & 1048576 /* ExportValue */) !== 0 ? symbol.exportSymbol : symbol); + } + function symbolIsValue(symbol) { + return !!(symbol.flags & 111551 /* Value */ || symbol.flags & 2097152 /* Alias */ && resolveAlias(symbol).flags & 111551 /* Value */ && !getTypeOnlyAliasDeclaration(symbol)); + } + function findConstructorDeclaration(node) { + var members = node.members; + for (var _i = 0, members_3 = members; _i < members_3.length; _i++) { + var member = members_3[_i]; + if (member.kind === 162 /* Constructor */ && ts.nodeIsPresent(member.body)) { + return member; + } + } + } + function createType(flags) { + var result = new Type(checker, flags); + typeCount++; + result.id = typeCount; + return result; + } + function createIntrinsicType(kind, intrinsicName, objectFlags) { + if (objectFlags === void 0) { objectFlags = 0; } + var type = createType(kind); + type.intrinsicName = intrinsicName; + type.objectFlags = objectFlags; + return type; + } + function createBooleanType(trueFalseTypes) { + var type = getUnionType(trueFalseTypes); + type.flags |= 16 /* Boolean */; + type.intrinsicName = "boolean"; + return type; + } + function createObjectType(objectFlags, symbol) { + var type = createType(524288 /* Object */); + type.objectFlags = objectFlags; + type.symbol = symbol; + type.members = undefined; + type.properties = undefined; + type.callSignatures = undefined; + type.constructSignatures = undefined; + type.stringIndexInfo = undefined; + type.numberIndexInfo = undefined; + return type; + } + function createTypeofType() { + return getUnionType(ts.arrayFrom(typeofEQFacts.keys(), getLiteralType)); + } + function createTypeParameter(symbol) { + var type = createType(262144 /* TypeParameter */); + if (symbol) + type.symbol = symbol; + return type; + } + // A reserved member name starts with two underscores, but the third character cannot be an underscore, + // @, or #. A third underscore indicates an escaped form of an identifier that started + // with at least two underscores. The @ character indicates that the name is denoted by a well known ES + // Symbol instance and the # character indicates that the name is a PrivateIdentifier. + function isReservedMemberName(name) { + return name.charCodeAt(0) === 95 /* _ */ && + name.charCodeAt(1) === 95 /* _ */ && + name.charCodeAt(2) !== 95 /* _ */ && + name.charCodeAt(2) !== 64 /* at */ && + name.charCodeAt(2) !== 35 /* hash */; + } + function getNamedMembers(members) { + var result; + members.forEach(function (symbol, id) { + if (!isReservedMemberName(id) && symbolIsValue(symbol)) { + (result || (result = [])).push(symbol); + } + }); + return result || ts.emptyArray; + } + function setStructuredTypeMembers(type, members, callSignatures, constructSignatures, stringIndexInfo, numberIndexInfo) { + type.members = members; + type.properties = members === emptySymbols ? ts.emptyArray : getNamedMembers(members); + type.callSignatures = callSignatures; + type.constructSignatures = constructSignatures; + type.stringIndexInfo = stringIndexInfo; + type.numberIndexInfo = numberIndexInfo; + return type; + } + function createAnonymousType(symbol, members, callSignatures, constructSignatures, stringIndexInfo, numberIndexInfo) { + return setStructuredTypeMembers(createObjectType(16 /* Anonymous */, symbol), members, callSignatures, constructSignatures, stringIndexInfo, numberIndexInfo); + } + function forEachSymbolTableInScope(enclosingDeclaration, callback) { + var result; + var _loop_7 = function (location) { + // Locals of a source file are not in scope (because they get merged into the global symbol table) + if (location.locals && !isGlobalSourceFile(location)) { + if (result = callback(location.locals)) { + return { value: result }; + } + } + switch (location.kind) { + case 290 /* SourceFile */: + if (!ts.isExternalOrCommonJsModule(location)) { + break; + } + // falls through + case 249 /* ModuleDeclaration */: + var sym = getSymbolOfNode(location); + // `sym` may not have exports if this module declaration is backed by the symbol for a `const` that's being rewritten + // into a namespace - in such cases, it's best to just let the namespace appear empty (the const members couldn't have referred + // to one another anyway) + if (result = callback((sym === null || sym === void 0 ? void 0 : sym.exports) || emptySymbols)) { + return { value: result }; + } + break; + case 245 /* ClassDeclaration */: + case 214 /* ClassExpression */: + case 246 /* InterfaceDeclaration */: + // Type parameters are bound into `members` lists so they can merge across declarations + // This is troublesome, since in all other respects, they behave like locals :cries: + // TODO: the below is shared with similar code in `resolveName` - in fact, rephrasing all this symbol + // lookup logic in terms of `resolveName` would be nice + // The below is used to lookup type parameters within a class or interface, as they are added to the class/interface locals + // These can never be latebound, so the symbol's raw members are sufficient. `getMembersOfNode` cannot be used, as it would + // trigger resolving late-bound names, which we may already be in the process of doing while we're here! + var table_1; + // TODO: Should this filtered table be cached in some way? + (getSymbolOfNode(location).members || emptySymbols).forEach(function (memberSymbol, key) { + if (memberSymbol.flags & (788968 /* Type */ & ~67108864 /* Assignment */)) { + (table_1 || (table_1 = ts.createSymbolTable())).set(key, memberSymbol); + } + }); + if (table_1 && (result = callback(table_1))) { + return { value: result }; + } + break; + } + }; + for (var location = enclosingDeclaration; location; location = location.parent) { + var state_2 = _loop_7(location); + if (typeof state_2 === "object") + return state_2.value; + } + return callback(globals); + } + function getQualifiedLeftMeaning(rightMeaning) { + // If we are looking in value space, the parent meaning is value, other wise it is namespace + return rightMeaning === 111551 /* Value */ ? 111551 /* Value */ : 1920 /* Namespace */; + } + function getAccessibleSymbolChain(symbol, enclosingDeclaration, meaning, useOnlyExternalAliasing, visitedSymbolTablesMap) { + if (visitedSymbolTablesMap === void 0) { visitedSymbolTablesMap = ts.createMap(); } + if (!(symbol && !isPropertyOrMethodDeclarationSymbol(symbol))) { + return undefined; + } + var id = "" + getSymbolId(symbol); + var visitedSymbolTables = visitedSymbolTablesMap.get(id); + if (!visitedSymbolTables) { + visitedSymbolTablesMap.set(id, visitedSymbolTables = []); + } + return forEachSymbolTableInScope(enclosingDeclaration, getAccessibleSymbolChainFromSymbolTable); + /** + * @param {ignoreQualification} boolean Set when a symbol is being looked for through the exports of another symbol (meaning we have a route to qualify it already) + */ + function getAccessibleSymbolChainFromSymbolTable(symbols, ignoreQualification) { + if (!ts.pushIfUnique(visitedSymbolTables, symbols)) { + return undefined; + } + var result = trySymbolTable(symbols, ignoreQualification); + visitedSymbolTables.pop(); + return result; + } + function canQualifySymbol(symbolFromSymbolTable, meaning) { + // If the symbol is equivalent and doesn't need further qualification, this symbol is accessible + return !needsQualification(symbolFromSymbolTable, enclosingDeclaration, meaning) || + // If symbol needs qualification, make sure that parent is accessible, if it is then this symbol is accessible too + !!getAccessibleSymbolChain(symbolFromSymbolTable.parent, enclosingDeclaration, getQualifiedLeftMeaning(meaning), useOnlyExternalAliasing, visitedSymbolTablesMap); + } + function isAccessible(symbolFromSymbolTable, resolvedAliasSymbol, ignoreQualification) { + return (symbol === (resolvedAliasSymbol || symbolFromSymbolTable) || getMergedSymbol(symbol) === getMergedSymbol(resolvedAliasSymbol || symbolFromSymbolTable)) && + // if the symbolFromSymbolTable is not external module (it could be if it was determined as ambient external module and would be in globals table) + // and if symbolFromSymbolTable or alias resolution matches the symbol, + // check the symbol can be qualified, it is only then this symbol is accessible + !ts.some(symbolFromSymbolTable.declarations, hasNonGlobalAugmentationExternalModuleSymbol) && + (ignoreQualification || canQualifySymbol(getMergedSymbol(symbolFromSymbolTable), meaning)); + } + function trySymbolTable(symbols, ignoreQualification) { + // If symbol is directly available by its name in the symbol table + if (isAccessible(symbols.get(symbol.escapedName), /*resolvedAliasSymbol*/ undefined, ignoreQualification)) { + return [symbol]; + } + // Check if symbol is any of the aliases in scope + var result = ts.forEachEntry(symbols, function (symbolFromSymbolTable) { + if (symbolFromSymbolTable.flags & 2097152 /* Alias */ + && symbolFromSymbolTable.escapedName !== "export=" /* ExportEquals */ + && symbolFromSymbolTable.escapedName !== "default" /* Default */ + && !(ts.isUMDExportSymbol(symbolFromSymbolTable) && enclosingDeclaration && ts.isExternalModule(ts.getSourceFileOfNode(enclosingDeclaration))) + // If `!useOnlyExternalAliasing`, we can use any type of alias to get the name + && (!useOnlyExternalAliasing || ts.some(symbolFromSymbolTable.declarations, ts.isExternalModuleImportEqualsDeclaration)) + // While exports are generally considered to be in scope, export-specifier declared symbols are _not_ + // See similar comment in `resolveName` for details + && (ignoreQualification || !ts.getDeclarationOfKind(symbolFromSymbolTable, 263 /* ExportSpecifier */))) { + var resolvedImportedSymbol = resolveAlias(symbolFromSymbolTable); + var candidate = getCandidateListForSymbol(symbolFromSymbolTable, resolvedImportedSymbol, ignoreQualification); + if (candidate) { + return candidate; + } + } + if (symbolFromSymbolTable.escapedName === symbol.escapedName && symbolFromSymbolTable.exportSymbol) { + if (isAccessible(getMergedSymbol(symbolFromSymbolTable.exportSymbol), /*aliasSymbol*/ undefined, ignoreQualification)) { + return [symbol]; + } + } + }); + // If there's no result and we're looking at the global symbol table, treat `globalThis` like an alias and try to lookup thru that + return result || (symbols === globals ? getCandidateListForSymbol(globalThisSymbol, globalThisSymbol, ignoreQualification) : undefined); + } + function getCandidateListForSymbol(symbolFromSymbolTable, resolvedImportedSymbol, ignoreQualification) { + if (isAccessible(symbolFromSymbolTable, resolvedImportedSymbol, ignoreQualification)) { + return [symbolFromSymbolTable]; + } + // Look in the exported members, if we can find accessibleSymbolChain, symbol is accessible using this chain + // but only if the symbolFromSymbolTable can be qualified + var candidateTable = getExportsOfSymbol(resolvedImportedSymbol); + var accessibleSymbolsFromExports = candidateTable && getAccessibleSymbolChainFromSymbolTable(candidateTable, /*ignoreQualification*/ true); + if (accessibleSymbolsFromExports && canQualifySymbol(symbolFromSymbolTable, getQualifiedLeftMeaning(meaning))) { + return [symbolFromSymbolTable].concat(accessibleSymbolsFromExports); + } + } + } + function needsQualification(symbol, enclosingDeclaration, meaning) { + var qualify = false; + forEachSymbolTableInScope(enclosingDeclaration, function (symbolTable) { + // If symbol of this name is not available in the symbol table we are ok + var symbolFromSymbolTable = getMergedSymbol(symbolTable.get(symbol.escapedName)); + if (!symbolFromSymbolTable) { + // Continue to the next symbol table + return false; + } + // If the symbol with this name is present it should refer to the symbol + if (symbolFromSymbolTable === symbol) { + // No need to qualify + return true; + } + // Qualify if the symbol from symbol table has same meaning as expected + symbolFromSymbolTable = (symbolFromSymbolTable.flags & 2097152 /* Alias */ && !ts.getDeclarationOfKind(symbolFromSymbolTable, 263 /* ExportSpecifier */)) ? resolveAlias(symbolFromSymbolTable) : symbolFromSymbolTable; + if (symbolFromSymbolTable.flags & meaning) { + qualify = true; + return true; + } + // Continue to the next symbol table + return false; + }); + return qualify; + } + function isPropertyOrMethodDeclarationSymbol(symbol) { + if (symbol.declarations && symbol.declarations.length) { + for (var _i = 0, _a = symbol.declarations; _i < _a.length; _i++) { + var declaration = _a[_i]; + switch (declaration.kind) { + case 159 /* PropertyDeclaration */: + case 161 /* MethodDeclaration */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + continue; + default: + return false; + } + } + return true; + } + return false; + } + function isTypeSymbolAccessible(typeSymbol, enclosingDeclaration) { + var access = isSymbolAccessible(typeSymbol, enclosingDeclaration, 788968 /* Type */, /*shouldComputeAliasesToMakeVisible*/ false); + return access.accessibility === 0 /* Accessible */; + } + function isValueSymbolAccessible(typeSymbol, enclosingDeclaration) { + var access = isSymbolAccessible(typeSymbol, enclosingDeclaration, 111551 /* Value */, /*shouldComputeAliasesToMakeVisible*/ false); + return access.accessibility === 0 /* Accessible */; + } + function isAnySymbolAccessible(symbols, enclosingDeclaration, initialSymbol, meaning, shouldComputeAliasesToMakeVisible) { + if (!ts.length(symbols)) + return; + var hadAccessibleChain; + var earlyModuleBail = false; + for (var _i = 0, _a = symbols; _i < _a.length; _i++) { + var symbol = _a[_i]; + // Symbol is accessible if it by itself is accessible + var accessibleSymbolChain = getAccessibleSymbolChain(symbol, enclosingDeclaration, meaning, /*useOnlyExternalAliasing*/ false); + if (accessibleSymbolChain) { + hadAccessibleChain = symbol; + var hasAccessibleDeclarations = hasVisibleDeclarations(accessibleSymbolChain[0], shouldComputeAliasesToMakeVisible); + if (hasAccessibleDeclarations) { + return hasAccessibleDeclarations; + } + } + else { + if (ts.some(symbol.declarations, hasNonGlobalAugmentationExternalModuleSymbol)) { + if (shouldComputeAliasesToMakeVisible) { + earlyModuleBail = true; + // Generally speaking, we want to use the aliases that already exist to refer to a module, if present + // In order to do so, we need to find those aliases in order to retain them in declaration emit; so + // if we are in declaration emit, we cannot use the fast path for module visibility until we've exhausted + // all other visibility options (in order to capture the possible aliases used to reference the module) + continue; + } + // Any meaning of a module symbol is always accessible via an `import` type + return { + accessibility: 0 /* Accessible */ + }; + } + } + // If we haven't got the accessible symbol, it doesn't mean the symbol is actually inaccessible. + // It could be a qualified symbol and hence verify the path + // e.g.: + // module m { + // export class c { + // } + // } + // const x: typeof m.c + // In the above example when we start with checking if typeof m.c symbol is accessible, + // we are going to see if c can be accessed in scope directly. + // But it can't, hence the accessible is going to be undefined, but that doesn't mean m.c is inaccessible + // It is accessible if the parent m is accessible because then m.c can be accessed through qualification + var containers = getContainersOfSymbol(symbol, enclosingDeclaration); + // If we're trying to reference some object literal in, eg `var a = { x: 1 }`, the symbol for the literal, `__object`, is distinct + // from the symbol of the declaration it is being assigned to. Since we can use the declaration to refer to the literal, however, + // we'd like to make that connection here - potentially causing us to paint the declaration's visibility, and therefore the literal. + var firstDecl = !!ts.length(symbol.declarations) && ts.first(symbol.declarations); + if (!ts.length(containers) && meaning & 111551 /* Value */ && firstDecl && ts.isObjectLiteralExpression(firstDecl)) { + if (firstDecl.parent && ts.isVariableDeclaration(firstDecl.parent) && firstDecl === firstDecl.parent.initializer) { + containers = [getSymbolOfNode(firstDecl.parent)]; + } + } + var parentResult = isAnySymbolAccessible(containers, enclosingDeclaration, initialSymbol, initialSymbol === symbol ? getQualifiedLeftMeaning(meaning) : meaning, shouldComputeAliasesToMakeVisible); + if (parentResult) { + return parentResult; + } + } + if (earlyModuleBail) { + return { + accessibility: 0 /* Accessible */ + }; + } + if (hadAccessibleChain) { + return { + accessibility: 1 /* NotAccessible */, + errorSymbolName: symbolToString(initialSymbol, enclosingDeclaration, meaning), + errorModuleName: hadAccessibleChain !== initialSymbol ? symbolToString(hadAccessibleChain, enclosingDeclaration, 1920 /* Namespace */) : undefined, + }; + } + } + /** + * Check if the given symbol in given enclosing declaration is accessible and mark all associated alias to be visible if requested + * + * @param symbol a Symbol to check if accessible + * @param enclosingDeclaration a Node containing reference to the symbol + * @param meaning a SymbolFlags to check if such meaning of the symbol is accessible + * @param shouldComputeAliasToMakeVisible a boolean value to indicate whether to return aliases to be mark visible in case the symbol is accessible + */ + function isSymbolAccessible(symbol, enclosingDeclaration, meaning, shouldComputeAliasesToMakeVisible) { + if (symbol && enclosingDeclaration) { + var result = isAnySymbolAccessible([symbol], enclosingDeclaration, symbol, meaning, shouldComputeAliasesToMakeVisible); + if (result) { + return result; + } + // This could be a symbol that is not exported in the external module + // or it could be a symbol from different external module that is not aliased and hence cannot be named + var symbolExternalModule = ts.forEach(symbol.declarations, getExternalModuleContainer); + if (symbolExternalModule) { + var enclosingExternalModule = getExternalModuleContainer(enclosingDeclaration); + if (symbolExternalModule !== enclosingExternalModule) { + // name from different external module that is not visible + return { + accessibility: 2 /* CannotBeNamed */, + errorSymbolName: symbolToString(symbol, enclosingDeclaration, meaning), + errorModuleName: symbolToString(symbolExternalModule) + }; + } + } + // Just a local name that is not accessible + return { + accessibility: 1 /* NotAccessible */, + errorSymbolName: symbolToString(symbol, enclosingDeclaration, meaning), + }; + } + return { accessibility: 0 /* Accessible */ }; + } + function getExternalModuleContainer(declaration) { + var node = ts.findAncestor(declaration, hasExternalModuleSymbol); + return node && getSymbolOfNode(node); + } + function hasExternalModuleSymbol(declaration) { + return ts.isAmbientModule(declaration) || (declaration.kind === 290 /* SourceFile */ && ts.isExternalOrCommonJsModule(declaration)); + } + function hasNonGlobalAugmentationExternalModuleSymbol(declaration) { + return ts.isModuleWithStringLiteralName(declaration) || (declaration.kind === 290 /* SourceFile */ && ts.isExternalOrCommonJsModule(declaration)); + } + function hasVisibleDeclarations(symbol, shouldComputeAliasToMakeVisible) { + var aliasesToMakeVisible; + if (!ts.every(ts.filter(symbol.declarations, function (d) { return d.kind !== 75 /* Identifier */; }), getIsDeclarationVisible)) { + return undefined; + } + return { accessibility: 0 /* Accessible */, aliasesToMakeVisible: aliasesToMakeVisible }; + function getIsDeclarationVisible(declaration) { + if (!isDeclarationVisible(declaration)) { + // Mark the unexported alias as visible if its parent is visible + // because these kind of aliases can be used to name types in declaration file + var anyImportSyntax = getAnyImportSyntax(declaration); + if (anyImportSyntax && + !ts.hasModifier(anyImportSyntax, 1 /* Export */) && // import clause without export + isDeclarationVisible(anyImportSyntax.parent)) { + return addVisibleAlias(declaration, anyImportSyntax); + } + else if (ts.isVariableDeclaration(declaration) && ts.isVariableStatement(declaration.parent.parent) && + !ts.hasModifier(declaration.parent.parent, 1 /* Export */) && // unexported variable statement + isDeclarationVisible(declaration.parent.parent.parent)) { + return addVisibleAlias(declaration, declaration.parent.parent); + } + else if (ts.isLateVisibilityPaintedStatement(declaration) // unexported top-level statement + && !ts.hasModifier(declaration, 1 /* Export */) + && isDeclarationVisible(declaration.parent)) { + return addVisibleAlias(declaration, declaration); + } + // Declaration is not visible + return false; + } + return true; + } + function addVisibleAlias(declaration, aliasingStatement) { + // In function "buildTypeDisplay" where we decide whether to write type-alias or serialize types, + // we want to just check if type- alias is accessible or not but we don't care about emitting those alias at that time + // since we will do the emitting later in trackSymbol. + if (shouldComputeAliasToMakeVisible) { + getNodeLinks(declaration).isVisible = true; + aliasesToMakeVisible = ts.appendIfUnique(aliasesToMakeVisible, aliasingStatement); + } + return true; + } + } + function isEntityNameVisible(entityName, enclosingDeclaration) { + // get symbol of the first identifier of the entityName + var meaning; + if (entityName.parent.kind === 172 /* TypeQuery */ || + ts.isExpressionWithTypeArgumentsInClassExtendsClause(entityName.parent) || + entityName.parent.kind === 154 /* ComputedPropertyName */) { + // Typeof value + meaning = 111551 /* Value */ | 1048576 /* ExportValue */; + } + else if (entityName.kind === 153 /* QualifiedName */ || entityName.kind === 194 /* PropertyAccessExpression */ || + entityName.parent.kind === 253 /* ImportEqualsDeclaration */) { + // Left identifier from type reference or TypeAlias + // Entity name of the import declaration + meaning = 1920 /* Namespace */; + } + else { + // Type Reference or TypeAlias entity = Identifier + meaning = 788968 /* Type */; + } + var firstIdentifier = ts.getFirstIdentifier(entityName); + var symbol = resolveName(enclosingDeclaration, firstIdentifier.escapedText, meaning, /*nodeNotFoundErrorMessage*/ undefined, /*nameArg*/ undefined, /*isUse*/ false); + // Verify if the symbol is accessible + return (symbol && hasVisibleDeclarations(symbol, /*shouldComputeAliasToMakeVisible*/ true)) || { + accessibility: 1 /* NotAccessible */, + errorSymbolName: ts.getTextOfNode(firstIdentifier), + errorNode: firstIdentifier + }; + } + function symbolToString(symbol, enclosingDeclaration, meaning, flags, writer) { + if (flags === void 0) { flags = 4 /* AllowAnyNodeKind */; } + var nodeFlags = 70221824 /* IgnoreErrors */; + if (flags & 2 /* UseOnlyExternalAliasing */) { + nodeFlags |= 128 /* UseOnlyExternalAliasing */; + } + if (flags & 1 /* WriteTypeParametersOrArguments */) { + nodeFlags |= 512 /* WriteTypeParametersInQualifiedName */; + } + if (flags & 8 /* UseAliasDefinedOutsideCurrentScope */) { + nodeFlags |= 16384 /* UseAliasDefinedOutsideCurrentScope */; + } + if (flags & 16 /* DoNotIncludeSymbolChain */) { + nodeFlags |= 134217728 /* DoNotIncludeSymbolChain */; + } + var builder = flags & 4 /* AllowAnyNodeKind */ ? nodeBuilder.symbolToExpression : nodeBuilder.symbolToEntityName; + return writer ? symbolToStringWorker(writer).getText() : ts.usingSingleLineStringWriter(symbolToStringWorker); + function symbolToStringWorker(writer) { + var entity = builder(symbol, meaning, enclosingDeclaration, nodeFlags); // TODO: GH#18217 + var printer = ts.createPrinter({ removeComments: true }); + var sourceFile = enclosingDeclaration && ts.getSourceFileOfNode(enclosingDeclaration); + printer.writeNode(4 /* Unspecified */, entity, /*sourceFile*/ sourceFile, writer); + return writer; + } + } + function signatureToString(signature, enclosingDeclaration, flags, kind, writer) { + if (flags === void 0) { flags = 0 /* None */; } + return writer ? signatureToStringWorker(writer).getText() : ts.usingSingleLineStringWriter(signatureToStringWorker); + function signatureToStringWorker(writer) { + var sigOutput; + if (flags & 262144 /* WriteArrowStyleSignature */) { + sigOutput = kind === 1 /* Construct */ ? 171 /* ConstructorType */ : 170 /* FunctionType */; + } + else { + sigOutput = kind === 1 /* Construct */ ? 166 /* ConstructSignature */ : 165 /* CallSignature */; + } + var sig = nodeBuilder.signatureToSignatureDeclaration(signature, sigOutput, enclosingDeclaration, toNodeBuilderFlags(flags) | 70221824 /* IgnoreErrors */ | 512 /* WriteTypeParametersInQualifiedName */); + var printer = ts.createPrinter({ removeComments: true, omitTrailingSemicolon: true }); + var sourceFile = enclosingDeclaration && ts.getSourceFileOfNode(enclosingDeclaration); + printer.writeNode(4 /* Unspecified */, sig, /*sourceFile*/ sourceFile, ts.getTrailingSemicolonDeferringWriter(writer)); // TODO: GH#18217 + return writer; + } + } + function typeToString(type, enclosingDeclaration, flags, writer) { + if (flags === void 0) { flags = 1048576 /* AllowUniqueESSymbolType */ | 16384 /* UseAliasDefinedOutsideCurrentScope */; } + if (writer === void 0) { writer = ts.createTextWriter(""); } + var noTruncation = compilerOptions.noErrorTruncation || flags & 1 /* NoTruncation */; + var typeNode = nodeBuilder.typeToTypeNode(type, enclosingDeclaration, toNodeBuilderFlags(flags) | 70221824 /* IgnoreErrors */ | (noTruncation ? 1 /* NoTruncation */ : 0), writer); + if (typeNode === undefined) + return ts.Debug.fail("should always get typenode"); + var options = { removeComments: true }; + var printer = ts.createPrinter(options); + var sourceFile = enclosingDeclaration && ts.getSourceFileOfNode(enclosingDeclaration); + printer.writeNode(4 /* Unspecified */, typeNode, /*sourceFile*/ sourceFile, writer); + var result = writer.getText(); + var maxLength = noTruncation ? ts.noTruncationMaximumTruncationLength * 2 : ts.defaultMaximumTruncationLength * 2; + if (maxLength && result && result.length >= maxLength) { + return result.substr(0, maxLength - "...".length) + "..."; + } + return result; + } + function getTypeNamesForErrorDisplay(left, right) { + var leftStr = symbolValueDeclarationIsContextSensitive(left.symbol) ? typeToString(left, left.symbol.valueDeclaration) : typeToString(left); + var rightStr = symbolValueDeclarationIsContextSensitive(right.symbol) ? typeToString(right, right.symbol.valueDeclaration) : typeToString(right); + if (leftStr === rightStr) { + leftStr = typeToString(left, /*enclosingDeclaration*/ undefined, 64 /* UseFullyQualifiedType */); + rightStr = typeToString(right, /*enclosingDeclaration*/ undefined, 64 /* UseFullyQualifiedType */); + } + return [leftStr, rightStr]; + } + function symbolValueDeclarationIsContextSensitive(symbol) { + return symbol && symbol.valueDeclaration && ts.isExpression(symbol.valueDeclaration) && !isContextSensitive(symbol.valueDeclaration); + } + function toNodeBuilderFlags(flags) { + if (flags === void 0) { flags = 0 /* None */; } + return flags & 814775659 /* NodeBuilderFlagsMask */; + } + function createNodeBuilder() { + return { + typeToTypeNode: function (type, enclosingDeclaration, flags, tracker) { + return withContext(enclosingDeclaration, flags, tracker, function (context) { return typeToTypeNodeHelper(type, context); }); + }, + indexInfoToIndexSignatureDeclaration: function (indexInfo, kind, enclosingDeclaration, flags, tracker) { + return withContext(enclosingDeclaration, flags, tracker, function (context) { return indexInfoToIndexSignatureDeclarationHelper(indexInfo, kind, context); }); + }, + signatureToSignatureDeclaration: function (signature, kind, enclosingDeclaration, flags, tracker) { + return withContext(enclosingDeclaration, flags, tracker, function (context) { return signatureToSignatureDeclarationHelper(signature, kind, context); }); + }, + symbolToEntityName: function (symbol, meaning, enclosingDeclaration, flags, tracker) { + return withContext(enclosingDeclaration, flags, tracker, function (context) { return symbolToName(symbol, context, meaning, /*expectsIdentifier*/ false); }); + }, + symbolToExpression: function (symbol, meaning, enclosingDeclaration, flags, tracker) { + return withContext(enclosingDeclaration, flags, tracker, function (context) { return symbolToExpression(symbol, context, meaning); }); + }, + symbolToTypeParameterDeclarations: function (symbol, enclosingDeclaration, flags, tracker) { + return withContext(enclosingDeclaration, flags, tracker, function (context) { return typeParametersToTypeParameterDeclarations(symbol, context); }); + }, + symbolToParameterDeclaration: function (symbol, enclosingDeclaration, flags, tracker) { + return withContext(enclosingDeclaration, flags, tracker, function (context) { return symbolToParameterDeclaration(symbol, context); }); + }, + typeParameterToDeclaration: function (parameter, enclosingDeclaration, flags, tracker) { + return withContext(enclosingDeclaration, flags, tracker, function (context) { return typeParameterToDeclaration(parameter, context); }); + }, + symbolTableToDeclarationStatements: function (symbolTable, enclosingDeclaration, flags, tracker, bundled) { + return withContext(enclosingDeclaration, flags, tracker, function (context) { return symbolTableToDeclarationStatements(symbolTable, context, bundled); }); + }, + }; + function withContext(enclosingDeclaration, flags, tracker, cb) { + ts.Debug.assert(enclosingDeclaration === undefined || (enclosingDeclaration.flags & 8 /* Synthesized */) === 0); + var context = { + enclosingDeclaration: enclosingDeclaration, + flags: flags || 0 /* None */, + // If no full tracker is provided, fake up a dummy one with a basic limited-functionality moduleResolverHost + tracker: tracker && tracker.trackSymbol ? tracker : { trackSymbol: ts.noop, moduleResolverHost: flags & 134217728 /* DoNotIncludeSymbolChain */ ? { + getCommonSourceDirectory: !!host.getCommonSourceDirectory ? function () { return host.getCommonSourceDirectory(); } : function () { return ""; }, + getSourceFiles: function () { return host.getSourceFiles(); }, + getCurrentDirectory: function () { return host.getCurrentDirectory(); }, + getProbableSymlinks: ts.maybeBind(host, host.getProbableSymlinks), + useCaseSensitiveFileNames: ts.maybeBind(host, host.useCaseSensitiveFileNames), + redirectTargetsMap: host.redirectTargetsMap, + getProjectReferenceRedirect: function (fileName) { return host.getProjectReferenceRedirect(fileName); }, + isSourceOfProjectReferenceRedirect: function (fileName) { return host.isSourceOfProjectReferenceRedirect(fileName); }, + fileExists: function (fileName) { return host.fileExists(fileName); }, + } : undefined }, + encounteredError: false, + visitedTypes: undefined, + symbolDepth: undefined, + inferTypeParameters: undefined, + approximateLength: 0 + }; + var resultingNode = cb(context); + return context.encounteredError ? undefined : resultingNode; + } + function checkTruncationLength(context) { + if (context.truncating) + return context.truncating; + return context.truncating = context.approximateLength > ((context.flags & 1 /* NoTruncation */) ? ts.noTruncationMaximumTruncationLength : ts.defaultMaximumTruncationLength); + } + function typeToTypeNodeHelper(type, context) { + if (cancellationToken && cancellationToken.throwIfCancellationRequested) { + cancellationToken.throwIfCancellationRequested(); + } + var inTypeAlias = context.flags & 8388608 /* InTypeAlias */; + context.flags &= ~8388608 /* InTypeAlias */; + if (!type) { + if (!(context.flags & 262144 /* AllowEmptyUnionOrIntersection */)) { + context.encounteredError = true; + return undefined; // TODO: GH#18217 + } + context.approximateLength += 3; + return ts.createKeywordTypeNode(125 /* AnyKeyword */); + } + if (!(context.flags & 536870912 /* NoTypeReduction */)) { + type = getReducedType(type); + } + if (type.flags & 1 /* Any */) { + context.approximateLength += 3; + return ts.createKeywordTypeNode(125 /* AnyKeyword */); + } + if (type.flags & 2 /* Unknown */) { + return ts.createKeywordTypeNode(148 /* UnknownKeyword */); + } + if (type.flags & 4 /* String */) { + context.approximateLength += 6; + return ts.createKeywordTypeNode(143 /* StringKeyword */); + } + if (type.flags & 8 /* Number */) { + context.approximateLength += 6; + return ts.createKeywordTypeNode(140 /* NumberKeyword */); + } + if (type.flags & 64 /* BigInt */) { + context.approximateLength += 6; + return ts.createKeywordTypeNode(151 /* BigIntKeyword */); + } + if (type.flags & 16 /* Boolean */) { + context.approximateLength += 7; + return ts.createKeywordTypeNode(128 /* BooleanKeyword */); + } + if (type.flags & 1024 /* EnumLiteral */ && !(type.flags & 1048576 /* Union */)) { + var parentSymbol = getParentOfSymbol(type.symbol); + var parentName = symbolToTypeNode(parentSymbol, context, 788968 /* Type */); + var enumLiteralName = getDeclaredTypeOfSymbol(parentSymbol) === type + ? parentName + : appendReferenceToType(parentName, ts.createTypeReferenceNode(ts.symbolName(type.symbol), /*typeArguments*/ undefined)); + return enumLiteralName; + } + if (type.flags & 1056 /* EnumLike */) { + return symbolToTypeNode(type.symbol, context, 788968 /* Type */); + } + if (type.flags & 128 /* StringLiteral */) { + context.approximateLength += (type.value.length + 2); + return ts.createLiteralTypeNode(ts.setEmitFlags(ts.createLiteral(type.value, !!(context.flags & 268435456 /* UseSingleQuotesForStringLiteralType */)), 16777216 /* NoAsciiEscaping */)); + } + if (type.flags & 256 /* NumberLiteral */) { + var value = type.value; + context.approximateLength += ("" + value).length; + return ts.createLiteralTypeNode(value < 0 ? ts.createPrefix(40 /* MinusToken */, ts.createLiteral(-value)) : ts.createLiteral(value)); + } + if (type.flags & 2048 /* BigIntLiteral */) { + context.approximateLength += (ts.pseudoBigIntToString(type.value).length) + 1; + return ts.createLiteralTypeNode((ts.createLiteral(type.value))); + } + if (type.flags & 512 /* BooleanLiteral */) { + context.approximateLength += type.intrinsicName.length; + return type.intrinsicName === "true" ? ts.createTrue() : ts.createFalse(); + } + if (type.flags & 8192 /* UniqueESSymbol */) { + if (!(context.flags & 1048576 /* AllowUniqueESSymbolType */)) { + if (isValueSymbolAccessible(type.symbol, context.enclosingDeclaration)) { + context.approximateLength += 6; + return symbolToTypeNode(type.symbol, context, 111551 /* Value */); + } + if (context.tracker.reportInaccessibleUniqueSymbolError) { + context.tracker.reportInaccessibleUniqueSymbolError(); + } + } + context.approximateLength += 13; + return ts.createTypeOperatorNode(147 /* UniqueKeyword */, ts.createKeywordTypeNode(144 /* SymbolKeyword */)); + } + if (type.flags & 16384 /* Void */) { + context.approximateLength += 4; + return ts.createKeywordTypeNode(110 /* VoidKeyword */); + } + if (type.flags & 32768 /* Undefined */) { + context.approximateLength += 9; + return ts.createKeywordTypeNode(146 /* UndefinedKeyword */); + } + if (type.flags & 65536 /* Null */) { + context.approximateLength += 4; + return ts.createKeywordTypeNode(100 /* NullKeyword */); + } + if (type.flags & 131072 /* Never */) { + context.approximateLength += 5; + return ts.createKeywordTypeNode(137 /* NeverKeyword */); + } + if (type.flags & 4096 /* ESSymbol */) { + context.approximateLength += 6; + return ts.createKeywordTypeNode(144 /* SymbolKeyword */); + } + if (type.flags & 67108864 /* NonPrimitive */) { + context.approximateLength += 6; + return ts.createKeywordTypeNode(141 /* ObjectKeyword */); + } + if (isThisTypeParameter(type)) { + if (context.flags & 4194304 /* InObjectTypeLiteral */) { + if (!context.encounteredError && !(context.flags & 32768 /* AllowThisInObjectLiteral */)) { + context.encounteredError = true; + } + if (context.tracker.reportInaccessibleThisError) { + context.tracker.reportInaccessibleThisError(); + } + } + context.approximateLength += 4; + return ts.createThis(); + } + if (!inTypeAlias && type.aliasSymbol && (context.flags & 16384 /* UseAliasDefinedOutsideCurrentScope */ || isTypeSymbolAccessible(type.aliasSymbol, context.enclosingDeclaration))) { + var typeArgumentNodes = mapToTypeNodes(type.aliasTypeArguments, context); + if (isReservedMemberName(type.aliasSymbol.escapedName) && !(type.aliasSymbol.flags & 32 /* Class */)) + return ts.createTypeReferenceNode(ts.createIdentifier(""), typeArgumentNodes); + return symbolToTypeNode(type.aliasSymbol, context, 788968 /* Type */, typeArgumentNodes); + } + var objectFlags = ts.getObjectFlags(type); + if (objectFlags & 4 /* Reference */) { + ts.Debug.assert(!!(type.flags & 524288 /* Object */)); + return type.node ? visitAndTransformType(type, typeReferenceToTypeNode) : typeReferenceToTypeNode(type); + } + if (type.flags & 262144 /* TypeParameter */ || objectFlags & 3 /* ClassOrInterface */) { + if (type.flags & 262144 /* TypeParameter */ && ts.contains(context.inferTypeParameters, type)) { + context.approximateLength += (ts.symbolName(type.symbol).length + 6); + return ts.createInferTypeNode(typeParameterToDeclarationWithConstraint(type, context, /*constraintNode*/ undefined)); + } + if (context.flags & 4 /* GenerateNamesForShadowedTypeParams */ && + type.flags & 262144 /* TypeParameter */ && + !isTypeSymbolAccessible(type.symbol, context.enclosingDeclaration)) { + var name = typeParameterToName(type, context); + context.approximateLength += ts.idText(name).length; + return ts.createTypeReferenceNode(ts.createIdentifier(ts.idText(name)), /*typeArguments*/ undefined); + } + // Ignore constraint/default when creating a usage (as opposed to declaration) of a type parameter. + return type.symbol + ? symbolToTypeNode(type.symbol, context, 788968 /* Type */) + : ts.createTypeReferenceNode(ts.createIdentifier("?"), /*typeArguments*/ undefined); + } + if (type.flags & (1048576 /* Union */ | 2097152 /* Intersection */)) { + var types = type.flags & 1048576 /* Union */ ? formatUnionTypes(type.types) : type.types; + if (ts.length(types) === 1) { + return typeToTypeNodeHelper(types[0], context); + } + var typeNodes = mapToTypeNodes(types, context, /*isBareList*/ true); + if (typeNodes && typeNodes.length > 0) { + var unionOrIntersectionTypeNode = ts.createUnionOrIntersectionTypeNode(type.flags & 1048576 /* Union */ ? 178 /* UnionType */ : 179 /* IntersectionType */, typeNodes); + return unionOrIntersectionTypeNode; + } + else { + if (!context.encounteredError && !(context.flags & 262144 /* AllowEmptyUnionOrIntersection */)) { + context.encounteredError = true; + } + return undefined; // TODO: GH#18217 + } + } + if (objectFlags & (16 /* Anonymous */ | 32 /* Mapped */)) { + ts.Debug.assert(!!(type.flags & 524288 /* Object */)); + // The type is an object literal type. + return createAnonymousTypeNode(type); + } + if (type.flags & 4194304 /* Index */) { + var indexedType = type.type; + context.approximateLength += 6; + var indexTypeNode = typeToTypeNodeHelper(indexedType, context); + return ts.createTypeOperatorNode(indexTypeNode); + } + if (type.flags & 8388608 /* IndexedAccess */) { + var objectTypeNode = typeToTypeNodeHelper(type.objectType, context); + var indexTypeNode = typeToTypeNodeHelper(type.indexType, context); + context.approximateLength += 2; + return ts.createIndexedAccessTypeNode(objectTypeNode, indexTypeNode); + } + if (type.flags & 16777216 /* Conditional */) { + var checkTypeNode = typeToTypeNodeHelper(type.checkType, context); + var saveInferTypeParameters = context.inferTypeParameters; + context.inferTypeParameters = type.root.inferTypeParameters; + var extendsTypeNode = typeToTypeNodeHelper(type.extendsType, context); + context.inferTypeParameters = saveInferTypeParameters; + var trueTypeNode = typeToTypeNodeOrCircularityElision(getTrueTypeFromConditionalType(type)); + var falseTypeNode = typeToTypeNodeOrCircularityElision(getFalseTypeFromConditionalType(type)); + context.approximateLength += 15; + return ts.createConditionalTypeNode(checkTypeNode, extendsTypeNode, trueTypeNode, falseTypeNode); + } + if (type.flags & 33554432 /* Substitution */) { + return typeToTypeNodeHelper(type.baseType, context); + } + return ts.Debug.fail("Should be unreachable."); + function typeToTypeNodeOrCircularityElision(type) { + var _a, _b; + if (type.flags & 1048576 /* Union */) { + if (context.visitedTypes && context.visitedTypes.has("" + getTypeId(type))) { + if (!(context.flags & 131072 /* AllowAnonymousIdentifier */)) { + context.encounteredError = true; + (_b = (_a = context.tracker) === null || _a === void 0 ? void 0 : _a.reportCyclicStructureError) === null || _b === void 0 ? void 0 : _b.call(_a); + } + return createElidedInformationPlaceholder(context); + } + return visitAndTransformType(type, function (type) { return typeToTypeNodeHelper(type, context); }); + } + return typeToTypeNodeHelper(type, context); + } + function createMappedTypeNodeFromType(type) { + ts.Debug.assert(!!(type.flags & 524288 /* Object */)); + var readonlyToken = type.declaration.readonlyToken ? ts.createToken(type.declaration.readonlyToken.kind) : undefined; + var questionToken = type.declaration.questionToken ? ts.createToken(type.declaration.questionToken.kind) : undefined; + var appropriateConstraintTypeNode; + if (isMappedTypeWithKeyofConstraintDeclaration(type)) { + // We have a { [P in keyof T]: X } + // We do this to ensure we retain the toplevel keyof-ness of the type which may be lost due to keyof distribution during `getConstraintTypeFromMappedType` + appropriateConstraintTypeNode = ts.createTypeOperatorNode(typeToTypeNodeHelper(getModifiersTypeFromMappedType(type), context)); + } + else { + appropriateConstraintTypeNode = typeToTypeNodeHelper(getConstraintTypeFromMappedType(type), context); + } + var typeParameterNode = typeParameterToDeclarationWithConstraint(getTypeParameterFromMappedType(type), context, appropriateConstraintTypeNode); + var templateTypeNode = typeToTypeNodeHelper(getTemplateTypeFromMappedType(type), context); + var mappedTypeNode = ts.createMappedTypeNode(readonlyToken, typeParameterNode, questionToken, templateTypeNode); + context.approximateLength += 10; + return ts.setEmitFlags(mappedTypeNode, 1 /* SingleLine */); + } + function createAnonymousTypeNode(type) { + var typeId = "" + type.id; + var symbol = type.symbol; + if (symbol) { + if (isJSConstructor(symbol.valueDeclaration)) { + // Instance and static types share the same symbol; only add 'typeof' for the static side. + var isInstanceType = type === getDeclaredTypeOfClassOrInterface(symbol) ? 788968 /* Type */ : 111551 /* Value */; + return symbolToTypeNode(symbol, context, isInstanceType); + } + // Always use 'typeof T' for type of class, enum, and module objects + else if (symbol.flags & 32 /* Class */ && !getBaseTypeVariableOfClass(symbol) && !(symbol.valueDeclaration.kind === 214 /* ClassExpression */ && context.flags & 2048 /* WriteClassExpressionAsTypeLiteral */) || + symbol.flags & (384 /* Enum */ | 512 /* ValueModule */) || + shouldWriteTypeOfFunctionSymbol()) { + return symbolToTypeNode(symbol, context, 111551 /* Value */); + } + else if (context.visitedTypes && context.visitedTypes.has(typeId)) { + // If type is an anonymous type literal in a type alias declaration, use type alias name + var typeAlias = getTypeAliasForTypeLiteral(type); + if (typeAlias) { + // The specified symbol flags need to be reinterpreted as type flags + return symbolToTypeNode(typeAlias, context, 788968 /* Type */); + } + else { + return createElidedInformationPlaceholder(context); + } + } + else { + return visitAndTransformType(type, createTypeNodeFromObjectType); + } + } + else { + // Anonymous types without a symbol are never circular. + return createTypeNodeFromObjectType(type); + } + function shouldWriteTypeOfFunctionSymbol() { + var isStaticMethodSymbol = !!(symbol.flags & 8192 /* Method */) && // typeof static method + ts.some(symbol.declarations, function (declaration) { return ts.hasModifier(declaration, 32 /* Static */); }); + var isNonLocalFunctionSymbol = !!(symbol.flags & 16 /* Function */) && + (symbol.parent || // is exported function symbol + ts.forEach(symbol.declarations, function (declaration) { + return declaration.parent.kind === 290 /* SourceFile */ || declaration.parent.kind === 250 /* ModuleBlock */; + })); + if (isStaticMethodSymbol || isNonLocalFunctionSymbol) { + // typeof is allowed only for static/non local functions + return (!!(context.flags & 4096 /* UseTypeOfFunction */) || (context.visitedTypes && context.visitedTypes.has(typeId))) && // it is type of the symbol uses itself recursively + (!(context.flags & 8 /* UseStructuralFallback */) || isValueSymbolAccessible(symbol, context.enclosingDeclaration)); // And the build is going to succeed without visibility error or there is no structural fallback allowed + } + } + } + function visitAndTransformType(type, transform) { + var typeId = "" + type.id; + var isConstructorObject = ts.getObjectFlags(type) & 16 /* Anonymous */ && type.symbol && type.symbol.flags & 32 /* Class */; + var id = ts.getObjectFlags(type) & 4 /* Reference */ && type.node ? "N" + getNodeId(type.node) : + type.symbol ? (isConstructorObject ? "+" : "") + getSymbolId(type.symbol) : + undefined; + // Since instantiations of the same anonymous type have the same symbol, tracking symbols instead + // of types allows us to catch circular references to instantiations of the same anonymous type + if (!context.visitedTypes) { + context.visitedTypes = ts.createMap(); + } + if (id && !context.symbolDepth) { + context.symbolDepth = ts.createMap(); + } + var depth; + if (id) { + depth = context.symbolDepth.get(id) || 0; + if (depth > 10) { + return createElidedInformationPlaceholder(context); + } + context.symbolDepth.set(id, depth + 1); + } + context.visitedTypes.set(typeId, true); + var result = transform(type); + context.visitedTypes.delete(typeId); + if (id) { + context.symbolDepth.set(id, depth); + } + return result; + } + function createTypeNodeFromObjectType(type) { + if (isGenericMappedType(type)) { + return createMappedTypeNodeFromType(type); + } + var resolved = resolveStructuredTypeMembers(type); + if (!resolved.properties.length && !resolved.stringIndexInfo && !resolved.numberIndexInfo) { + if (!resolved.callSignatures.length && !resolved.constructSignatures.length) { + context.approximateLength += 2; + return ts.setEmitFlags(ts.createTypeLiteralNode(/*members*/ undefined), 1 /* SingleLine */); + } + if (resolved.callSignatures.length === 1 && !resolved.constructSignatures.length) { + var signature = resolved.callSignatures[0]; + var signatureNode = signatureToSignatureDeclarationHelper(signature, 170 /* FunctionType */, context); + return signatureNode; + } + if (resolved.constructSignatures.length === 1 && !resolved.callSignatures.length) { + var signature = resolved.constructSignatures[0]; + var signatureNode = signatureToSignatureDeclarationHelper(signature, 171 /* ConstructorType */, context); + return signatureNode; + } + } + var savedFlags = context.flags; + context.flags |= 4194304 /* InObjectTypeLiteral */; + var members = createTypeNodesFromResolvedType(resolved); + context.flags = savedFlags; + var typeLiteralNode = ts.createTypeLiteralNode(members); + context.approximateLength += 2; + return ts.setEmitFlags(typeLiteralNode, (context.flags & 1024 /* MultilineObjectLiterals */) ? 0 : 1 /* SingleLine */); + } + function typeReferenceToTypeNode(type) { + var typeArguments = getTypeArguments(type); + if (type.target === globalArrayType || type.target === globalReadonlyArrayType) { + if (context.flags & 2 /* WriteArrayAsGenericType */) { + var typeArgumentNode = typeToTypeNodeHelper(typeArguments[0], context); + return ts.createTypeReferenceNode(type.target === globalArrayType ? "Array" : "ReadonlyArray", [typeArgumentNode]); + } + var elementType = typeToTypeNodeHelper(typeArguments[0], context); + var arrayType = ts.createArrayTypeNode(elementType); + return type.target === globalArrayType ? arrayType : ts.createTypeOperatorNode(138 /* ReadonlyKeyword */, arrayType); + } + else if (type.target.objectFlags & 8 /* Tuple */) { + if (typeArguments.length > 0) { + var arity = getTypeReferenceArity(type); + var tupleConstituentNodes = mapToTypeNodes(typeArguments.slice(0, arity), context); + var hasRestElement = type.target.hasRestElement; + if (tupleConstituentNodes) { + for (var i = type.target.minLength; i < Math.min(arity, tupleConstituentNodes.length); i++) { + tupleConstituentNodes[i] = hasRestElement && i === arity - 1 ? + ts.createRestTypeNode(ts.createArrayTypeNode(tupleConstituentNodes[i])) : + ts.createOptionalTypeNode(tupleConstituentNodes[i]); + } + var tupleTypeNode = ts.createTupleTypeNode(tupleConstituentNodes); + return type.target.readonly ? ts.createTypeOperatorNode(138 /* ReadonlyKeyword */, tupleTypeNode) : tupleTypeNode; + } + } + if (context.encounteredError || (context.flags & 524288 /* AllowEmptyTuple */)) { + var tupleTypeNode = ts.createTupleTypeNode([]); + return type.target.readonly ? ts.createTypeOperatorNode(138 /* ReadonlyKeyword */, tupleTypeNode) : tupleTypeNode; + } + context.encounteredError = true; + return undefined; // TODO: GH#18217 + } + else if (context.flags & 2048 /* WriteClassExpressionAsTypeLiteral */ && + type.symbol.valueDeclaration && + ts.isClassLike(type.symbol.valueDeclaration) && + !isValueSymbolAccessible(type.symbol, context.enclosingDeclaration)) { + return createAnonymousTypeNode(type); + } + else { + var outerTypeParameters = type.target.outerTypeParameters; + var i = 0; + var resultType = void 0; + if (outerTypeParameters) { + var length_2 = outerTypeParameters.length; + while (i < length_2) { + // Find group of type arguments for type parameters with the same declaring container. + var start = i; + var parent = getParentSymbolOfTypeParameter(outerTypeParameters[i]); + do { + i++; + } while (i < length_2 && getParentSymbolOfTypeParameter(outerTypeParameters[i]) === parent); + // When type parameters are their own type arguments for the whole group (i.e. we have + // the default outer type arguments), we don't show the group. + if (!ts.rangeEquals(outerTypeParameters, typeArguments, start, i)) { + var typeArgumentSlice = mapToTypeNodes(typeArguments.slice(start, i), context); + var flags_2 = context.flags; + context.flags |= 16 /* ForbidIndexedAccessSymbolReferences */; + var ref = symbolToTypeNode(parent, context, 788968 /* Type */, typeArgumentSlice); + context.flags = flags_2; + resultType = !resultType ? ref : appendReferenceToType(resultType, ref); + } + } + } + var typeArgumentNodes = void 0; + if (typeArguments.length > 0) { + var typeParameterCount = (type.target.typeParameters || ts.emptyArray).length; + typeArgumentNodes = mapToTypeNodes(typeArguments.slice(i, typeParameterCount), context); + } + var flags = context.flags; + context.flags |= 16 /* ForbidIndexedAccessSymbolReferences */; + var finalRef = symbolToTypeNode(type.symbol, context, 788968 /* Type */, typeArgumentNodes); + context.flags = flags; + return !resultType ? finalRef : appendReferenceToType(resultType, finalRef); + } + } + function appendReferenceToType(root, ref) { + if (ts.isImportTypeNode(root)) { + // first shift type arguments + var innerParams = root.typeArguments; + if (root.qualifier) { + (ts.isIdentifier(root.qualifier) ? root.qualifier : root.qualifier.right).typeArguments = innerParams; + } + root.typeArguments = ref.typeArguments; + // then move qualifiers + var ids = getAccessStack(ref); + for (var _i = 0, ids_1 = ids; _i < ids_1.length; _i++) { + var id = ids_1[_i]; + root.qualifier = root.qualifier ? ts.createQualifiedName(root.qualifier, id) : id; + } + return root; + } + else { + // first shift type arguments + var innerParams = root.typeArguments; + (ts.isIdentifier(root.typeName) ? root.typeName : root.typeName.right).typeArguments = innerParams; + root.typeArguments = ref.typeArguments; + // then move qualifiers + var ids = getAccessStack(ref); + for (var _a = 0, ids_2 = ids; _a < ids_2.length; _a++) { + var id = ids_2[_a]; + root.typeName = ts.createQualifiedName(root.typeName, id); + } + return root; + } + } + function getAccessStack(ref) { + var state = ref.typeName; + var ids = []; + while (!ts.isIdentifier(state)) { + ids.unshift(state.right); + state = state.left; + } + ids.unshift(state); + return ids; + } + function createTypeNodesFromResolvedType(resolvedType) { + if (checkTruncationLength(context)) { + return [ts.createPropertySignature(/*modifiers*/ undefined, "...", /*questionToken*/ undefined, /*type*/ undefined, /*initializer*/ undefined)]; + } + var typeElements = []; + for (var _i = 0, _a = resolvedType.callSignatures; _i < _a.length; _i++) { + var signature = _a[_i]; + typeElements.push(signatureToSignatureDeclarationHelper(signature, 165 /* CallSignature */, context)); + } + for (var _b = 0, _c = resolvedType.constructSignatures; _b < _c.length; _b++) { + var signature = _c[_b]; + typeElements.push(signatureToSignatureDeclarationHelper(signature, 166 /* ConstructSignature */, context)); + } + if (resolvedType.stringIndexInfo) { + var indexSignature = void 0; + if (resolvedType.objectFlags & 2048 /* ReverseMapped */) { + indexSignature = indexInfoToIndexSignatureDeclarationHelper(createIndexInfo(anyType, resolvedType.stringIndexInfo.isReadonly, resolvedType.stringIndexInfo.declaration), 0 /* String */, context); + indexSignature.type = createElidedInformationPlaceholder(context); + } + else { + indexSignature = indexInfoToIndexSignatureDeclarationHelper(resolvedType.stringIndexInfo, 0 /* String */, context); + } + typeElements.push(indexSignature); + } + if (resolvedType.numberIndexInfo) { + typeElements.push(indexInfoToIndexSignatureDeclarationHelper(resolvedType.numberIndexInfo, 1 /* Number */, context)); + } + var properties = resolvedType.properties; + if (!properties) { + return typeElements; + } + var i = 0; + for (var _d = 0, properties_1 = properties; _d < properties_1.length; _d++) { + var propertySymbol = properties_1[_d]; + i++; + if (context.flags & 2048 /* WriteClassExpressionAsTypeLiteral */) { + if (propertySymbol.flags & 4194304 /* Prototype */) { + continue; + } + if (ts.getDeclarationModifierFlagsFromSymbol(propertySymbol) & (8 /* Private */ | 16 /* Protected */) && context.tracker.reportPrivateInBaseOfClassExpression) { + context.tracker.reportPrivateInBaseOfClassExpression(ts.unescapeLeadingUnderscores(propertySymbol.escapedName)); + } + } + if (checkTruncationLength(context) && (i + 2 < properties.length - 1)) { + typeElements.push(ts.createPropertySignature(/*modifiers*/ undefined, "... " + (properties.length - i) + " more ...", /*questionToken*/ undefined, /*type*/ undefined, /*initializer*/ undefined)); + addPropertyToElementList(properties[properties.length - 1], context, typeElements); + break; + } + addPropertyToElementList(propertySymbol, context, typeElements); + } + return typeElements.length ? typeElements : undefined; + } + } + function createElidedInformationPlaceholder(context) { + context.approximateLength += 3; + if (!(context.flags & 1 /* NoTruncation */)) { + return ts.createTypeReferenceNode(ts.createIdentifier("..."), /*typeArguments*/ undefined); + } + return ts.createKeywordTypeNode(125 /* AnyKeyword */); + } + function addPropertyToElementList(propertySymbol, context, typeElements) { + var propertyIsReverseMapped = !!(ts.getCheckFlags(propertySymbol) & 8192 /* ReverseMapped */); + var propertyType = propertyIsReverseMapped && context.flags & 33554432 /* InReverseMappedType */ ? + anyType : getTypeOfSymbol(propertySymbol); + var saveEnclosingDeclaration = context.enclosingDeclaration; + context.enclosingDeclaration = undefined; + if (context.tracker.trackSymbol && ts.getCheckFlags(propertySymbol) & 4096 /* Late */) { + var decl = ts.first(propertySymbol.declarations); + if (hasLateBindableName(decl)) { + if (ts.isBinaryExpression(decl)) { + var name = ts.getNameOfDeclaration(decl); + if (name && ts.isElementAccessExpression(name) && ts.isPropertyAccessEntityNameExpression(name.argumentExpression)) { + trackComputedName(name.argumentExpression, saveEnclosingDeclaration, context); + } + } + else { + trackComputedName(decl.name.expression, saveEnclosingDeclaration, context); + } + } + } + context.enclosingDeclaration = saveEnclosingDeclaration; + var propertyName = getPropertyNameNodeForSymbol(propertySymbol, context); + context.approximateLength += (ts.symbolName(propertySymbol).length + 1); + var optionalToken = propertySymbol.flags & 16777216 /* Optional */ ? ts.createToken(57 /* QuestionToken */) : undefined; + if (propertySymbol.flags & (16 /* Function */ | 8192 /* Method */) && !getPropertiesOfObjectType(propertyType).length && !isReadonlySymbol(propertySymbol)) { + var signatures = getSignaturesOfType(filterType(propertyType, function (t) { return !(t.flags & 32768 /* Undefined */); }), 0 /* Call */); + for (var _i = 0, signatures_1 = signatures; _i < signatures_1.length; _i++) { + var signature = signatures_1[_i]; + var methodDeclaration = signatureToSignatureDeclarationHelper(signature, 160 /* MethodSignature */, context); + methodDeclaration.name = propertyName; + methodDeclaration.questionToken = optionalToken; + typeElements.push(preserveCommentsOn(methodDeclaration)); + } + } + else { + var savedFlags = context.flags; + context.flags |= propertyIsReverseMapped ? 33554432 /* InReverseMappedType */ : 0; + var propertyTypeNode = void 0; + if (propertyIsReverseMapped && !!(savedFlags & 33554432 /* InReverseMappedType */)) { + propertyTypeNode = createElidedInformationPlaceholder(context); + } + else { + propertyTypeNode = propertyType ? serializeTypeForDeclaration(context, propertyType, propertySymbol, saveEnclosingDeclaration) : ts.createKeywordTypeNode(125 /* AnyKeyword */); + } + context.flags = savedFlags; + var modifiers = isReadonlySymbol(propertySymbol) ? [ts.createToken(138 /* ReadonlyKeyword */)] : undefined; + if (modifiers) { + context.approximateLength += 9; + } + var propertySignature = ts.createPropertySignature(modifiers, propertyName, optionalToken, propertyTypeNode, + /*initializer*/ undefined); + typeElements.push(preserveCommentsOn(propertySignature)); + } + function preserveCommentsOn(node) { + if (ts.some(propertySymbol.declarations, function (d) { return d.kind === 323 /* JSDocPropertyTag */; })) { + var d = ts.find(propertySymbol.declarations, function (d) { return d.kind === 323 /* JSDocPropertyTag */; }); + var commentText = d.comment; + if (commentText) { + ts.setSyntheticLeadingComments(node, [{ kind: 3 /* MultiLineCommentTrivia */, text: "*\n * " + commentText.replace(/\n/g, "\n * ") + "\n ", pos: -1, end: -1, hasTrailingNewLine: true }]); + } + } + else if (propertySymbol.valueDeclaration) { + // Copy comments to node for declaration emit + ts.setCommentRange(node, propertySymbol.valueDeclaration); + } + return node; + } + } + function mapToTypeNodes(types, context, isBareList) { + if (ts.some(types)) { + if (checkTruncationLength(context)) { + if (!isBareList) { + return [ts.createTypeReferenceNode("...", /*typeArguments*/ undefined)]; + } + else if (types.length > 2) { + return [ + typeToTypeNodeHelper(types[0], context), + ts.createTypeReferenceNode("... " + (types.length - 2) + " more ...", /*typeArguments*/ undefined), + typeToTypeNodeHelper(types[types.length - 1], context) + ]; + } + } + var mayHaveNameCollisions = !(context.flags & 64 /* UseFullyQualifiedType */); + /** Map from type reference identifier text to [type, index in `result` where the type node is] */ + var seenNames = mayHaveNameCollisions ? ts.createUnderscoreEscapedMultiMap() : undefined; + var result_3 = []; + var i = 0; + for (var _i = 0, types_1 = types; _i < types_1.length; _i++) { + var type = types_1[_i]; + i++; + if (checkTruncationLength(context) && (i + 2 < types.length - 1)) { + result_3.push(ts.createTypeReferenceNode("... " + (types.length - i) + " more ...", /*typeArguments*/ undefined)); + var typeNode_1 = typeToTypeNodeHelper(types[types.length - 1], context); + if (typeNode_1) { + result_3.push(typeNode_1); + } + break; + } + context.approximateLength += 2; // Account for whitespace + separator + var typeNode = typeToTypeNodeHelper(type, context); + if (typeNode) { + result_3.push(typeNode); + if (seenNames && ts.isIdentifierTypeReference(typeNode)) { + seenNames.add(typeNode.typeName.escapedText, [type, result_3.length - 1]); + } + } + } + if (seenNames) { + // To avoid printing types like `[Foo, Foo]` or `Bar & Bar` where + // occurrences of the same name actually come from different + // namespaces, go through the single-identifier type reference nodes + // we just generated, and see if any names were generated more than + // once while referring to different types. If so, regenerate the + // type node for each entry by that name with the + // `UseFullyQualifiedType` flag enabled. + var saveContextFlags = context.flags; + context.flags |= 64 /* UseFullyQualifiedType */; + seenNames.forEach(function (types) { + if (!ts.arrayIsHomogeneous(types, function (_a, _b) { + var a = _a[0]; + var b = _b[0]; + return typesAreSameReference(a, b); + })) { + for (var _i = 0, types_2 = types; _i < types_2.length; _i++) { + var _a = types_2[_i], type = _a[0], resultIndex = _a[1]; + result_3[resultIndex] = typeToTypeNodeHelper(type, context); + } + } + }); + context.flags = saveContextFlags; + } + return result_3; + } + } + function typesAreSameReference(a, b) { + return a === b + || !!a.symbol && a.symbol === b.symbol + || !!a.aliasSymbol && a.aliasSymbol === b.aliasSymbol; + } + function indexInfoToIndexSignatureDeclarationHelper(indexInfo, kind, context) { + var name = ts.getNameFromIndexInfo(indexInfo) || "x"; + var indexerTypeNode = ts.createKeywordTypeNode(kind === 0 /* String */ ? 143 /* StringKeyword */ : 140 /* NumberKeyword */); + var indexingParameter = ts.createParameter( + /*decorators*/ undefined, + /*modifiers*/ undefined, + /*dotDotDotToken*/ undefined, name, + /*questionToken*/ undefined, indexerTypeNode, + /*initializer*/ undefined); + var typeNode = typeToTypeNodeHelper(indexInfo.type || anyType, context); + if (!indexInfo.type && !(context.flags & 2097152 /* AllowEmptyIndexInfoType */)) { + context.encounteredError = true; + } + context.approximateLength += (name.length + 4); + return ts.createIndexSignature( + /*decorators*/ undefined, indexInfo.isReadonly ? [ts.createToken(138 /* ReadonlyKeyword */)] : undefined, [indexingParameter], typeNode); + } + function signatureToSignatureDeclarationHelper(signature, kind, context, privateSymbolVisitor, bundledImports) { + var suppressAny = context.flags & 256 /* SuppressAnyReturnType */; + if (suppressAny) + context.flags &= ~256 /* SuppressAnyReturnType */; // suppress only toplevel `any`s + var typeParameters; + var typeArguments; + if (context.flags & 32 /* WriteTypeArgumentsOfSignature */ && signature.target && signature.mapper && signature.target.typeParameters) { + typeArguments = signature.target.typeParameters.map(function (parameter) { return typeToTypeNodeHelper(instantiateType(parameter, signature.mapper), context); }); + } + else { + typeParameters = signature.typeParameters && signature.typeParameters.map(function (parameter) { return typeParameterToDeclaration(parameter, context); }); + } + var parameters = getExpandedParameters(signature).map(function (parameter) { return symbolToParameterDeclaration(parameter, context, kind === 162 /* Constructor */, privateSymbolVisitor, bundledImports); }); + if (signature.thisParameter) { + var thisParameter = symbolToParameterDeclaration(signature.thisParameter, context); + parameters.unshift(thisParameter); + } + var returnTypeNode; + var typePredicate = getTypePredicateOfSignature(signature); + if (typePredicate) { + var assertsModifier = typePredicate.kind === 2 /* AssertsThis */ || typePredicate.kind === 3 /* AssertsIdentifier */ ? + ts.createToken(124 /* AssertsKeyword */) : + undefined; + var parameterName = typePredicate.kind === 1 /* Identifier */ || typePredicate.kind === 3 /* AssertsIdentifier */ ? + ts.setEmitFlags(ts.createIdentifier(typePredicate.parameterName), 16777216 /* NoAsciiEscaping */) : + ts.createThisTypeNode(); + var typeNode = typePredicate.type && typeToTypeNodeHelper(typePredicate.type, context); + returnTypeNode = ts.createTypePredicateNodeWithModifier(assertsModifier, parameterName, typeNode); + } + else { + var returnType = getReturnTypeOfSignature(signature); + if (returnType && !(suppressAny && isTypeAny(returnType))) { + returnTypeNode = serializeReturnTypeForSignature(context, returnType, signature, privateSymbolVisitor, bundledImports); + } + else if (!suppressAny) { + returnTypeNode = ts.createKeywordTypeNode(125 /* AnyKeyword */); + } + } + context.approximateLength += 3; // Usually a signature contributes a few more characters than this, but 3 is the minimum + return ts.createSignatureDeclaration(kind, typeParameters, parameters, returnTypeNode, typeArguments); + } + function typeParameterToDeclarationWithConstraint(type, context, constraintNode) { + var savedContextFlags = context.flags; + context.flags &= ~512 /* WriteTypeParametersInQualifiedName */; // Avoids potential infinite loop when building for a claimspace with a generic + var name = typeParameterToName(type, context); + var defaultParameter = getDefaultFromTypeParameter(type); + var defaultParameterNode = defaultParameter && typeToTypeNodeHelper(defaultParameter, context); + context.flags = savedContextFlags; + return ts.createTypeParameterDeclaration(name, constraintNode, defaultParameterNode); + } + function typeParameterToDeclaration(type, context, constraint) { + if (constraint === void 0) { constraint = getConstraintOfTypeParameter(type); } + var constraintNode = constraint && typeToTypeNodeHelper(constraint, context); + return typeParameterToDeclarationWithConstraint(type, context, constraintNode); + } + function symbolToParameterDeclaration(parameterSymbol, context, preserveModifierFlags, privateSymbolVisitor, bundledImports) { + var parameterDeclaration = ts.getDeclarationOfKind(parameterSymbol, 156 /* Parameter */); + if (!parameterDeclaration && !ts.isTransientSymbol(parameterSymbol)) { + parameterDeclaration = ts.getDeclarationOfKind(parameterSymbol, 317 /* JSDocParameterTag */); + } + var parameterType = getTypeOfSymbol(parameterSymbol); + if (parameterDeclaration && isRequiredInitializedParameter(parameterDeclaration)) { + parameterType = getOptionalType(parameterType); + } + var parameterTypeNode = serializeTypeForDeclaration(context, parameterType, parameterSymbol, context.enclosingDeclaration, privateSymbolVisitor, bundledImports); + var modifiers = !(context.flags & 8192 /* OmitParameterModifiers */) && preserveModifierFlags && parameterDeclaration && parameterDeclaration.modifiers ? parameterDeclaration.modifiers.map(ts.getSynthesizedClone) : undefined; + var isRest = parameterDeclaration && ts.isRestParameter(parameterDeclaration) || ts.getCheckFlags(parameterSymbol) & 32768 /* RestParameter */; + var dotDotDotToken = isRest ? ts.createToken(25 /* DotDotDotToken */) : undefined; + var name = parameterDeclaration ? parameterDeclaration.name ? + parameterDeclaration.name.kind === 75 /* Identifier */ ? ts.setEmitFlags(ts.getSynthesizedClone(parameterDeclaration.name), 16777216 /* NoAsciiEscaping */) : + parameterDeclaration.name.kind === 153 /* QualifiedName */ ? ts.setEmitFlags(ts.getSynthesizedClone(parameterDeclaration.name.right), 16777216 /* NoAsciiEscaping */) : + cloneBindingName(parameterDeclaration.name) : + ts.symbolName(parameterSymbol) : + ts.symbolName(parameterSymbol); + var isOptional = parameterDeclaration && isOptionalParameter(parameterDeclaration) || ts.getCheckFlags(parameterSymbol) & 16384 /* OptionalParameter */; + var questionToken = isOptional ? ts.createToken(57 /* QuestionToken */) : undefined; + var parameterNode = ts.createParameter( + /*decorators*/ undefined, modifiers, dotDotDotToken, name, questionToken, parameterTypeNode, + /*initializer*/ undefined); + context.approximateLength += ts.symbolName(parameterSymbol).length + 3; + return parameterNode; + function cloneBindingName(node) { + return elideInitializerAndSetEmitFlags(node); + function elideInitializerAndSetEmitFlags(node) { + if (context.tracker.trackSymbol && ts.isComputedPropertyName(node) && isLateBindableName(node)) { + trackComputedName(node.expression, context.enclosingDeclaration, context); + } + var visited = ts.visitEachChild(node, elideInitializerAndSetEmitFlags, ts.nullTransformationContext, /*nodesVisitor*/ undefined, elideInitializerAndSetEmitFlags); + var clone = ts.nodeIsSynthesized(visited) ? visited : ts.getSynthesizedClone(visited); + if (clone.kind === 191 /* BindingElement */) { + clone.initializer = undefined; + } + return ts.setEmitFlags(clone, 1 /* SingleLine */ | 16777216 /* NoAsciiEscaping */); + } + } + } + function trackComputedName(accessExpression, enclosingDeclaration, context) { + if (!context.tracker.trackSymbol) + return; + // get symbol of the first identifier of the entityName + var firstIdentifier = ts.getFirstIdentifier(accessExpression); + var name = resolveName(firstIdentifier, firstIdentifier.escapedText, 111551 /* Value */ | 1048576 /* ExportValue */, /*nodeNotFoundErrorMessage*/ undefined, /*nameArg*/ undefined, /*isUse*/ true); + if (name) { + context.tracker.trackSymbol(name, enclosingDeclaration, 111551 /* Value */); + } + } + function lookupSymbolChain(symbol, context, meaning, yieldModuleSymbol) { + context.tracker.trackSymbol(symbol, context.enclosingDeclaration, meaning); // TODO: GH#18217 + return lookupSymbolChainWorker(symbol, context, meaning, yieldModuleSymbol); + } + function lookupSymbolChainWorker(symbol, context, meaning, yieldModuleSymbol) { + // Try to get qualified name if the symbol is not a type parameter and there is an enclosing declaration. + var chain; + var isTypeParameter = symbol.flags & 262144 /* TypeParameter */; + if (!isTypeParameter && (context.enclosingDeclaration || context.flags & 64 /* UseFullyQualifiedType */) && !(context.flags & 134217728 /* DoNotIncludeSymbolChain */)) { + chain = ts.Debug.checkDefined(getSymbolChain(symbol, meaning, /*endOfChain*/ true)); + ts.Debug.assert(chain && chain.length > 0); + } + else { + chain = [symbol]; + } + return chain; + /** @param endOfChain Set to false for recursive calls; non-recursive calls should always output something. */ + function getSymbolChain(symbol, meaning, endOfChain) { + var accessibleSymbolChain = getAccessibleSymbolChain(symbol, context.enclosingDeclaration, meaning, !!(context.flags & 128 /* UseOnlyExternalAliasing */)); + var parentSpecifiers; + if (!accessibleSymbolChain || + needsQualification(accessibleSymbolChain[0], context.enclosingDeclaration, accessibleSymbolChain.length === 1 ? meaning : getQualifiedLeftMeaning(meaning))) { + // Go up and add our parent. + var parents_1 = getContainersOfSymbol(accessibleSymbolChain ? accessibleSymbolChain[0] : symbol, context.enclosingDeclaration); + if (ts.length(parents_1)) { + parentSpecifiers = parents_1.map(function (symbol) { + return ts.some(symbol.declarations, hasNonGlobalAugmentationExternalModuleSymbol) + ? getSpecifierForModuleSymbol(symbol, context) + : undefined; + }); + var indices = parents_1.map(function (_, i) { return i; }); + indices.sort(sortByBestName); + var sortedParents = indices.map(function (i) { return parents_1[i]; }); + for (var _i = 0, sortedParents_1 = sortedParents; _i < sortedParents_1.length; _i++) { + var parent = sortedParents_1[_i]; + var parentChain = getSymbolChain(parent, getQualifiedLeftMeaning(meaning), /*endOfChain*/ false); + if (parentChain) { + if (parent.exports && parent.exports.get("export=" /* ExportEquals */) && + getSymbolIfSameReference(parent.exports.get("export=" /* ExportEquals */), symbol)) { + // parentChain root _is_ symbol - symbol is a module export=, so it kinda looks like it's own parent + // No need to lookup an alias for the symbol in itself + accessibleSymbolChain = parentChain; + break; + } + accessibleSymbolChain = parentChain.concat(accessibleSymbolChain || [getAliasForSymbolInContainer(parent, symbol) || symbol]); + break; + } + } + } + } + if (accessibleSymbolChain) { + return accessibleSymbolChain; + } + if ( + // If this is the last part of outputting the symbol, always output. The cases apply only to parent symbols. + endOfChain || + // If a parent symbol is an anonymous type, don't write it. + !(symbol.flags & (2048 /* TypeLiteral */ | 4096 /* ObjectLiteral */))) { + // If a parent symbol is an external module, don't write it. (We prefer just `x` vs `"foo/bar".x`.) + if (!endOfChain && !yieldModuleSymbol && !!ts.forEach(symbol.declarations, hasNonGlobalAugmentationExternalModuleSymbol)) { + return; + } + return [symbol]; + } + function sortByBestName(a, b) { + var specifierA = parentSpecifiers[a]; + var specifierB = parentSpecifiers[b]; + if (specifierA && specifierB) { + var isBRelative = ts.pathIsRelative(specifierB); + if (ts.pathIsRelative(specifierA) === isBRelative) { + // Both relative or both non-relative, sort by number of parts + return ts.moduleSpecifiers.countPathComponents(specifierA) - ts.moduleSpecifiers.countPathComponents(specifierB); + } + if (isBRelative) { + // A is non-relative, B is relative: prefer A + return -1; + } + // A is relative, B is non-relative: prefer B + return 1; + } + return 0; + } + } + } + function typeParametersToTypeParameterDeclarations(symbol, context) { + var typeParameterNodes; + var targetSymbol = getTargetSymbol(symbol); + if (targetSymbol.flags & (32 /* Class */ | 64 /* Interface */ | 524288 /* TypeAlias */)) { + typeParameterNodes = ts.createNodeArray(ts.map(getLocalTypeParametersOfClassOrInterfaceOrTypeAlias(symbol), function (tp) { return typeParameterToDeclaration(tp, context); })); + } + return typeParameterNodes; + } + function lookupTypeParameterNodes(chain, index, context) { + ts.Debug.assert(chain && 0 <= index && index < chain.length); + var symbol = chain[index]; + var symbolId = "" + getSymbolId(symbol); + if (context.typeParameterSymbolList && context.typeParameterSymbolList.get(symbolId)) { + return undefined; + } + (context.typeParameterSymbolList || (context.typeParameterSymbolList = ts.createMap())).set(symbolId, true); + var typeParameterNodes; + if (context.flags & 512 /* WriteTypeParametersInQualifiedName */ && index < (chain.length - 1)) { + var parentSymbol = symbol; + var nextSymbol_1 = chain[index + 1]; + if (ts.getCheckFlags(nextSymbol_1) & 1 /* Instantiated */) { + var params = getTypeParametersOfClassOrInterface(parentSymbol.flags & 2097152 /* Alias */ ? resolveAlias(parentSymbol) : parentSymbol); + typeParameterNodes = mapToTypeNodes(ts.map(params, function (t) { return getMappedType(t, nextSymbol_1.mapper); }), context); + } + else { + typeParameterNodes = typeParametersToTypeParameterDeclarations(symbol, context); + } + } + return typeParameterNodes; + } + /** + * Given A[B][C][D], finds A[B] + */ + function getTopmostIndexedAccessType(top) { + if (ts.isIndexedAccessTypeNode(top.objectType)) { + return getTopmostIndexedAccessType(top.objectType); + } + return top; + } + function getSpecifierForModuleSymbol(symbol, context) { + var file = ts.getDeclarationOfKind(symbol, 290 /* SourceFile */); + if (!file) { + var equivalentFileSymbol = ts.firstDefined(symbol.declarations, function (d) { return getFileSymbolIfFileSymbolExportEqualsContainer(d, symbol); }); + if (equivalentFileSymbol) { + file = ts.getDeclarationOfKind(equivalentFileSymbol, 290 /* SourceFile */); + } + } + if (file && file.moduleName !== undefined) { + // Use the amd name if it is available + return file.moduleName; + } + if (!file) { + if (context.tracker.trackReferencedAmbientModule) { + var ambientDecls = ts.filter(symbol.declarations, ts.isAmbientModule); + if (ts.length(ambientDecls)) { + for (var _i = 0, ambientDecls_1 = ambientDecls; _i < ambientDecls_1.length; _i++) { + var decl = ambientDecls_1[_i]; + context.tracker.trackReferencedAmbientModule(decl, symbol); + } + } + } + if (ambientModuleSymbolRegex.test(symbol.escapedName)) { + return symbol.escapedName.substring(1, symbol.escapedName.length - 1); + } + } + if (!context.enclosingDeclaration || !context.tracker.moduleResolverHost) { + // If there's no context declaration, we can't lookup a non-ambient specifier, so we just use the symbol name + if (ambientModuleSymbolRegex.test(symbol.escapedName)) { + return symbol.escapedName.substring(1, symbol.escapedName.length - 1); + } + return ts.getSourceFileOfNode(ts.getNonAugmentationDeclaration(symbol)).fileName; // A resolver may not be provided for baselines and errors - in those cases we use the fileName in full + } + var contextFile = ts.getSourceFileOfNode(ts.getOriginalNode(context.enclosingDeclaration)); + var links = getSymbolLinks(symbol); + var specifier = links.specifierCache && links.specifierCache.get(contextFile.path); + if (!specifier) { + var isBundle_1 = (compilerOptions.out || compilerOptions.outFile); + // For declaration bundles, we need to generate absolute paths relative to the common source dir for imports, + // just like how the declaration emitter does for the ambient module declarations - we can easily accomplish this + // using the `baseUrl` compiler option (which we would otherwise never use in declaration emit) and a non-relative + // specifier preference + var moduleResolverHost = context.tracker.moduleResolverHost; + var specifierCompilerOptions = isBundle_1 ? __assign(__assign({}, compilerOptions), { baseUrl: moduleResolverHost.getCommonSourceDirectory() }) : compilerOptions; + specifier = ts.first(ts.moduleSpecifiers.getModuleSpecifiers(symbol, specifierCompilerOptions, contextFile, moduleResolverHost, { importModuleSpecifierPreference: isBundle_1 ? "non-relative" : "relative" })); + links.specifierCache = links.specifierCache || ts.createMap(); + links.specifierCache.set(contextFile.path, specifier); + } + return specifier; + } + function symbolToTypeNode(symbol, context, meaning, overrideTypeArguments) { + var chain = lookupSymbolChain(symbol, context, meaning, !(context.flags & 16384 /* UseAliasDefinedOutsideCurrentScope */)); // If we're using aliases outside the current scope, dont bother with the module + var isTypeOf = meaning === 111551 /* Value */; + if (ts.some(chain[0].declarations, hasNonGlobalAugmentationExternalModuleSymbol)) { + // module is root, must use `ImportTypeNode` + var nonRootParts = chain.length > 1 ? createAccessFromSymbolChain(chain, chain.length - 1, 1) : undefined; + var typeParameterNodes = overrideTypeArguments || lookupTypeParameterNodes(chain, 0, context); + var specifier = getSpecifierForModuleSymbol(chain[0], context); + if (!(context.flags & 67108864 /* AllowNodeModulesRelativePaths */) && ts.getEmitModuleResolutionKind(compilerOptions) === ts.ModuleResolutionKind.NodeJs && specifier.indexOf("/node_modules/") >= 0) { + // If ultimately we can only name the symbol with a reference that dives into a `node_modules` folder, we should error + // since declaration files with these kinds of references are liable to fail when published :( + context.encounteredError = true; + if (context.tracker.reportLikelyUnsafeImportRequiredError) { + context.tracker.reportLikelyUnsafeImportRequiredError(specifier); + } + } + var lit = ts.createLiteralTypeNode(ts.createLiteral(specifier)); + if (context.tracker.trackExternalModuleSymbolOfImportTypeNode) + context.tracker.trackExternalModuleSymbolOfImportTypeNode(chain[0]); + context.approximateLength += specifier.length + 10; // specifier + import("") + if (!nonRootParts || ts.isEntityName(nonRootParts)) { + if (nonRootParts) { + var lastId = ts.isIdentifier(nonRootParts) ? nonRootParts : nonRootParts.right; + lastId.typeArguments = undefined; + } + return ts.createImportTypeNode(lit, nonRootParts, typeParameterNodes, isTypeOf); + } + else { + var splitNode = getTopmostIndexedAccessType(nonRootParts); + var qualifier = splitNode.objectType.typeName; + return ts.createIndexedAccessTypeNode(ts.createImportTypeNode(lit, qualifier, typeParameterNodes, isTypeOf), splitNode.indexType); + } + } + var entityName = createAccessFromSymbolChain(chain, chain.length - 1, 0); + if (ts.isIndexedAccessTypeNode(entityName)) { + return entityName; // Indexed accesses can never be `typeof` + } + if (isTypeOf) { + return ts.createTypeQueryNode(entityName); + } + else { + var lastId = ts.isIdentifier(entityName) ? entityName : entityName.right; + var lastTypeArgs = lastId.typeArguments; + lastId.typeArguments = undefined; + return ts.createTypeReferenceNode(entityName, lastTypeArgs); + } + function createAccessFromSymbolChain(chain, index, stopper) { + var typeParameterNodes = index === (chain.length - 1) ? overrideTypeArguments : lookupTypeParameterNodes(chain, index, context); + var symbol = chain[index]; + var parent = chain[index - 1]; + var symbolName; + if (index === 0) { + context.flags |= 16777216 /* InInitialEntityName */; + symbolName = getNameOfSymbolAsWritten(symbol, context); + context.approximateLength += (symbolName ? symbolName.length : 0) + 1; + context.flags ^= 16777216 /* InInitialEntityName */; + } + else { + if (parent && getExportsOfSymbol(parent)) { + var exports_1 = getExportsOfSymbol(parent); + ts.forEachEntry(exports_1, function (ex, name) { + if (getSymbolIfSameReference(ex, symbol) && !isLateBoundName(name) && name !== "export=" /* ExportEquals */) { + symbolName = ts.unescapeLeadingUnderscores(name); + return true; + } + }); + } + } + if (!symbolName) { + symbolName = getNameOfSymbolAsWritten(symbol, context); + } + context.approximateLength += symbolName.length + 1; + if (!(context.flags & 16 /* ForbidIndexedAccessSymbolReferences */) && parent && + getMembersOfSymbol(parent) && getMembersOfSymbol(parent).get(symbol.escapedName) && + getSymbolIfSameReference(getMembersOfSymbol(parent).get(symbol.escapedName), symbol)) { + // Should use an indexed access + var LHS = createAccessFromSymbolChain(chain, index - 1, stopper); + if (ts.isIndexedAccessTypeNode(LHS)) { + return ts.createIndexedAccessTypeNode(LHS, ts.createLiteralTypeNode(ts.createLiteral(symbolName))); + } + else { + return ts.createIndexedAccessTypeNode(ts.createTypeReferenceNode(LHS, typeParameterNodes), ts.createLiteralTypeNode(ts.createLiteral(symbolName))); + } + } + var identifier = ts.setEmitFlags(ts.createIdentifier(symbolName, typeParameterNodes), 16777216 /* NoAsciiEscaping */); + identifier.symbol = symbol; + if (index > stopper) { + var LHS = createAccessFromSymbolChain(chain, index - 1, stopper); + if (!ts.isEntityName(LHS)) { + return ts.Debug.fail("Impossible construct - an export of an indexed access cannot be reachable"); + } + return ts.createQualifiedName(LHS, identifier); + } + return identifier; + } + } + function typeParameterShadowsNameInScope(escapedName, context, type) { + var result = resolveName(context.enclosingDeclaration, escapedName, 788968 /* Type */, /*nameNotFoundArg*/ undefined, escapedName, /*isUse*/ false); + if (result) { + if (result.flags & 262144 /* TypeParameter */ && result === type.symbol) { + return false; + } + return true; + } + return false; + } + function typeParameterToName(type, context) { + if (context.flags & 4 /* GenerateNamesForShadowedTypeParams */ && context.typeParameterNames) { + var cached = context.typeParameterNames.get("" + getTypeId(type)); + if (cached) { + return cached; + } + } + var result = symbolToName(type.symbol, context, 788968 /* Type */, /*expectsIdentifier*/ true); + if (!(result.kind & 75 /* Identifier */)) { + return ts.createIdentifier("(Missing type parameter)"); + } + if (context.flags & 4 /* GenerateNamesForShadowedTypeParams */) { + var rawtext = result.escapedText; + var i = 0; + var text = rawtext; + while ((context.typeParameterNamesByText && context.typeParameterNamesByText.get(text)) || typeParameterShadowsNameInScope(text, context, type)) { + i++; + text = rawtext + "_" + i; + } + if (text !== rawtext) { + result = ts.createIdentifier(text, result.typeArguments); + } + (context.typeParameterNames || (context.typeParameterNames = ts.createMap())).set("" + getTypeId(type), result); + (context.typeParameterNamesByText || (context.typeParameterNamesByText = ts.createMap())).set(result.escapedText, true); + } + return result; + } + function symbolToName(symbol, context, meaning, expectsIdentifier) { + var chain = lookupSymbolChain(symbol, context, meaning); + if (expectsIdentifier && chain.length !== 1 + && !context.encounteredError + && !(context.flags & 65536 /* AllowQualifedNameInPlaceOfIdentifier */)) { + context.encounteredError = true; + } + return createEntityNameFromSymbolChain(chain, chain.length - 1); + function createEntityNameFromSymbolChain(chain, index) { + var typeParameterNodes = lookupTypeParameterNodes(chain, index, context); + var symbol = chain[index]; + if (index === 0) { + context.flags |= 16777216 /* InInitialEntityName */; + } + var symbolName = getNameOfSymbolAsWritten(symbol, context); + if (index === 0) { + context.flags ^= 16777216 /* InInitialEntityName */; + } + var identifier = ts.setEmitFlags(ts.createIdentifier(symbolName, typeParameterNodes), 16777216 /* NoAsciiEscaping */); + identifier.symbol = symbol; + return index > 0 ? ts.createQualifiedName(createEntityNameFromSymbolChain(chain, index - 1), identifier) : identifier; + } + } + function symbolToExpression(symbol, context, meaning) { + var chain = lookupSymbolChain(symbol, context, meaning); + return createExpressionFromSymbolChain(chain, chain.length - 1); + function createExpressionFromSymbolChain(chain, index) { + var typeParameterNodes = lookupTypeParameterNodes(chain, index, context); + var symbol = chain[index]; + if (index === 0) { + context.flags |= 16777216 /* InInitialEntityName */; + } + var symbolName = getNameOfSymbolAsWritten(symbol, context); + if (index === 0) { + context.flags ^= 16777216 /* InInitialEntityName */; + } + var firstChar = symbolName.charCodeAt(0); + if (ts.isSingleOrDoubleQuote(firstChar) && ts.some(symbol.declarations, hasNonGlobalAugmentationExternalModuleSymbol)) { + return ts.createLiteral(getSpecifierForModuleSymbol(symbol, context)); + } + var canUsePropertyAccess = firstChar === 35 /* hash */ ? + symbolName.length > 1 && ts.isIdentifierStart(symbolName.charCodeAt(1), languageVersion) : + ts.isIdentifierStart(firstChar, languageVersion); + if (index === 0 || canUsePropertyAccess) { + var identifier = ts.setEmitFlags(ts.createIdentifier(symbolName, typeParameterNodes), 16777216 /* NoAsciiEscaping */); + identifier.symbol = symbol; + return index > 0 ? ts.createPropertyAccess(createExpressionFromSymbolChain(chain, index - 1), identifier) : identifier; + } + else { + if (firstChar === 91 /* openBracket */) { + symbolName = symbolName.substring(1, symbolName.length - 1); + firstChar = symbolName.charCodeAt(0); + } + var expression = void 0; + if (ts.isSingleOrDoubleQuote(firstChar)) { + expression = ts.createLiteral(symbolName.substring(1, symbolName.length - 1).replace(/\\./g, function (s) { return s.substring(1); })); + expression.singleQuote = firstChar === 39 /* singleQuote */; + } + else if (("" + +symbolName) === symbolName) { + expression = ts.createLiteral(+symbolName); + } + if (!expression) { + expression = ts.setEmitFlags(ts.createIdentifier(symbolName, typeParameterNodes), 16777216 /* NoAsciiEscaping */); + expression.symbol = symbol; + } + return ts.createElementAccess(createExpressionFromSymbolChain(chain, index - 1), expression); + } + } + } + function isSingleQuotedStringNamed(d) { + var name = ts.getNameOfDeclaration(d); + if (name && ts.isStringLiteral(name) && (name.singleQuote || + (!ts.nodeIsSynthesized(name) && ts.startsWith(ts.getTextOfNode(name, /*includeTrivia*/ false), "'")))) { + return true; + } + return false; + } + function getPropertyNameNodeForSymbol(symbol, context) { + var singleQuote = !!ts.length(symbol.declarations) && ts.every(symbol.declarations, isSingleQuotedStringNamed); + var fromNameType = getPropertyNameNodeForSymbolFromNameType(symbol, context, singleQuote); + if (fromNameType) { + return fromNameType; + } + if (ts.isKnownSymbol(symbol)) { + return ts.createComputedPropertyName(ts.createPropertyAccess(ts.createIdentifier("Symbol"), symbol.escapedName.substr(3))); + } + var rawName = ts.unescapeLeadingUnderscores(symbol.escapedName); + return createPropertyNameNodeForIdentifierOrLiteral(rawName, singleQuote); + } + // See getNameForSymbolFromNameType for a stringy equivalent + function getPropertyNameNodeForSymbolFromNameType(symbol, context, singleQuote) { + var nameType = getSymbolLinks(symbol).nameType; + if (nameType) { + if (nameType.flags & 384 /* StringOrNumberLiteral */) { + var name = "" + nameType.value; + if (!ts.isIdentifierText(name, compilerOptions.target) && !isNumericLiteralName(name)) { + return ts.createLiteral(name, !!singleQuote); + } + if (isNumericLiteralName(name) && ts.startsWith(name, "-")) { + return ts.createComputedPropertyName(ts.createLiteral(+name)); + } + return createPropertyNameNodeForIdentifierOrLiteral(name); + } + if (nameType.flags & 8192 /* UniqueESSymbol */) { + return ts.createComputedPropertyName(symbolToExpression(nameType.symbol, context, 111551 /* Value */)); + } + } + } + function createPropertyNameNodeForIdentifierOrLiteral(name, singleQuote) { + return ts.isIdentifierText(name, compilerOptions.target) ? ts.createIdentifier(name) : ts.createLiteral(isNumericLiteralName(name) && +name >= 0 ? +name : name, !!singleQuote); + } + function cloneNodeBuilderContext(context) { + var initial = __assign({}, context); + // Make type parameters created within this context not consume the name outside this context + // The symbol serializer ends up creating many sibling scopes that all need "separate" contexts when + // it comes to naming things - within a normal `typeToTypeNode` call, the node builder only ever descends + // through the type tree, so the only cases where we could have used distinct sibling scopes was when there + // were multiple generic overloads with similar generated type parameter names + // The effect: + // When we write out + // export const x: (x: T) => T + // export const y: (x: T) => T + // we write it out like that, rather than as + // export const x: (x: T) => T + // export const y: (x: T_1) => T_1 + if (initial.typeParameterNames) { + initial.typeParameterNames = ts.cloneMap(initial.typeParameterNames); + } + if (initial.typeParameterNamesByText) { + initial.typeParameterNamesByText = ts.cloneMap(initial.typeParameterNamesByText); + } + if (initial.typeParameterSymbolList) { + initial.typeParameterSymbolList = ts.cloneMap(initial.typeParameterSymbolList); + } + return initial; + } + function getDeclarationWithTypeAnnotation(symbol, enclosingDeclaration) { + return symbol.declarations && ts.find(symbol.declarations, function (s) { return !!ts.getEffectiveTypeAnnotationNode(s) && (!enclosingDeclaration || !!ts.findAncestor(s, function (n) { return n === enclosingDeclaration; })); }); + } + function existingTypeNodeIsNotReferenceOrIsReferenceWithCompatibleTypeArgumentCount(existing, type) { + return !(ts.getObjectFlags(type) & 4 /* Reference */) || !ts.isTypeReferenceNode(existing) || ts.length(existing.typeArguments) >= getMinTypeArgumentCount(type.target.typeParameters); + } + /** + * Unlike `typeToTypeNodeHelper`, this handles setting up the `AllowUniqueESSymbolType` flag + * so a `unique symbol` is returned when appropriate for the input symbol, rather than `typeof sym` + */ + function serializeTypeForDeclaration(context, type, symbol, enclosingDeclaration, includePrivateSymbol, bundled) { + if (type !== errorType && enclosingDeclaration) { + var declWithExistingAnnotation = getDeclarationWithTypeAnnotation(symbol, enclosingDeclaration); + if (declWithExistingAnnotation && !ts.isFunctionLikeDeclaration(declWithExistingAnnotation)) { + // try to reuse the existing annotation + var existing = ts.getEffectiveTypeAnnotationNode(declWithExistingAnnotation); + if (getTypeFromTypeNode(existing) === type && existingTypeNodeIsNotReferenceOrIsReferenceWithCompatibleTypeArgumentCount(existing, type)) { + var result_4 = serializeExistingTypeNode(context, existing, includePrivateSymbol, bundled); + if (result_4) { + return result_4; + } + } + } + } + var oldFlags = context.flags; + if (type.flags & 8192 /* UniqueESSymbol */ && + type.symbol === symbol) { + context.flags |= 1048576 /* AllowUniqueESSymbolType */; + } + var result = typeToTypeNodeHelper(type, context); + context.flags = oldFlags; + return result; + } + function serializeReturnTypeForSignature(context, type, signature, includePrivateSymbol, bundled) { + if (type !== errorType && context.enclosingDeclaration) { + var annotation = signature.declaration && ts.getEffectiveReturnTypeNode(signature.declaration); + if (!!ts.findAncestor(annotation, function (n) { return n === context.enclosingDeclaration; }) && annotation && instantiateType(getTypeFromTypeNode(annotation), signature.mapper) === type && existingTypeNodeIsNotReferenceOrIsReferenceWithCompatibleTypeArgumentCount(annotation, type)) { + var result = serializeExistingTypeNode(context, annotation, includePrivateSymbol, bundled); + if (result) { + return result; + } + } + } + return typeToTypeNodeHelper(type, context); + } + function serializeExistingTypeNode(context, existing, includePrivateSymbol, bundled) { + if (cancellationToken && cancellationToken.throwIfCancellationRequested) { + cancellationToken.throwIfCancellationRequested(); + } + var hadError = false; + var transformed = ts.visitNode(existing, visitExistingNodeTreeSymbols); + if (hadError) { + return undefined; + } + return transformed === existing ? ts.getMutableClone(existing) : transformed; + function visitExistingNodeTreeSymbols(node) { + var _a, _b; + // We don't _actually_ support jsdoc namepath types, emit `any` instead + if (ts.isJSDocAllType(node) || node.kind === 302 /* JSDocNamepathType */) { + return ts.createKeywordTypeNode(125 /* AnyKeyword */); + } + if (ts.isJSDocUnknownType(node)) { + return ts.createKeywordTypeNode(148 /* UnknownKeyword */); + } + if (ts.isJSDocNullableType(node)) { + return ts.createUnionTypeNode([ts.visitNode(node.type, visitExistingNodeTreeSymbols), ts.createKeywordTypeNode(100 /* NullKeyword */)]); + } + if (ts.isJSDocOptionalType(node)) { + return ts.createUnionTypeNode([ts.visitNode(node.type, visitExistingNodeTreeSymbols), ts.createKeywordTypeNode(146 /* UndefinedKeyword */)]); + } + if (ts.isJSDocNonNullableType(node)) { + return ts.visitNode(node.type, visitExistingNodeTreeSymbols); + } + if (ts.isJSDocVariadicType(node)) { + return ts.createArrayTypeNode(ts.visitNode(node.type, visitExistingNodeTreeSymbols)); + } + if (ts.isJSDocTypeLiteral(node)) { + return ts.createTypeLiteralNode(ts.map(node.jsDocPropertyTags, function (t) { + var name = ts.isIdentifier(t.name) ? t.name : t.name.right; + var typeViaParent = getTypeOfPropertyOfType(getTypeFromTypeNode(node), name.escapedText); + var overrideTypeNode = typeViaParent && t.typeExpression && getTypeFromTypeNode(t.typeExpression.type) !== typeViaParent ? typeToTypeNodeHelper(typeViaParent, context) : undefined; + return ts.createPropertySignature( + /*modifiers*/ undefined, name, t.typeExpression && ts.isJSDocOptionalType(t.typeExpression.type) ? ts.createToken(57 /* QuestionToken */) : undefined, overrideTypeNode || (t.typeExpression && ts.visitNode(t.typeExpression.type, visitExistingNodeTreeSymbols)) || ts.createKeywordTypeNode(125 /* AnyKeyword */), + /*initializer*/ undefined); + })); + } + if (ts.isTypeReferenceNode(node) && ts.isIdentifier(node.typeName) && node.typeName.escapedText === "") { + return ts.setOriginalNode(ts.createKeywordTypeNode(125 /* AnyKeyword */), node); + } + if ((ts.isExpressionWithTypeArguments(node) || ts.isTypeReferenceNode(node)) && ts.isJSDocIndexSignature(node)) { + return ts.createTypeLiteralNode([ts.createIndexSignature( + /*decorators*/ undefined, + /*modifiers*/ undefined, [ts.createParameter( + /*decorators*/ undefined, + /*modifiers*/ undefined, + /*dotdotdotToken*/ undefined, "x", + /*questionToken*/ undefined, ts.visitNode(node.typeArguments[0], visitExistingNodeTreeSymbols))], ts.visitNode(node.typeArguments[1], visitExistingNodeTreeSymbols))]); + } + if (ts.isJSDocFunctionType(node)) { + if (ts.isJSDocConstructSignature(node)) { + var newTypeNode_1; + return ts.createConstructorTypeNode(ts.visitNodes(node.typeParameters, visitExistingNodeTreeSymbols), ts.mapDefined(node.parameters, function (p, i) { return p.name && ts.isIdentifier(p.name) && p.name.escapedText === "new" ? (newTypeNode_1 = p.type, undefined) : ts.createParameter( + /*decorators*/ undefined, + /*modifiers*/ undefined, getEffectiveDotDotDotForParameter(p), p.name || getEffectiveDotDotDotForParameter(p) ? "args" : "arg" + i, p.questionToken, ts.visitNode(p.type, visitExistingNodeTreeSymbols), + /*initializer*/ undefined); }), ts.visitNode(newTypeNode_1 || node.type, visitExistingNodeTreeSymbols)); + } + else { + return ts.createFunctionTypeNode(ts.visitNodes(node.typeParameters, visitExistingNodeTreeSymbols), ts.map(node.parameters, function (p, i) { return ts.createParameter( + /*decorators*/ undefined, + /*modifiers*/ undefined, getEffectiveDotDotDotForParameter(p), p.name || getEffectiveDotDotDotForParameter(p) ? "args" : "arg" + i, p.questionToken, ts.visitNode(p.type, visitExistingNodeTreeSymbols), + /*initializer*/ undefined); }), ts.visitNode(node.type, visitExistingNodeTreeSymbols)); + } + } + if (ts.isTypeReferenceNode(node) && ts.isInJSDoc(node) && (getIntendedTypeFromJSDocTypeReference(node) || unknownSymbol === resolveTypeReferenceName(getTypeReferenceName(node), 788968 /* Type */, /*ignoreErrors*/ true))) { + return ts.setOriginalNode(typeToTypeNodeHelper(getTypeFromTypeNode(node), context), node); + } + if (ts.isLiteralImportTypeNode(node)) { + return ts.updateImportTypeNode(node, ts.updateLiteralTypeNode(node.argument, rewriteModuleSpecifier(node, node.argument.literal)), node.qualifier, ts.visitNodes(node.typeArguments, visitExistingNodeTreeSymbols, ts.isTypeNode), node.isTypeOf); + } + if (ts.isEntityName(node) || ts.isEntityNameExpression(node)) { + var leftmost = ts.getFirstIdentifier(node); + if (ts.isInJSFile(node) && (ts.isExportsIdentifier(leftmost) || ts.isModuleExportsAccessExpression(leftmost.parent) || (ts.isQualifiedName(leftmost.parent) && ts.isModuleIdentifier(leftmost.parent.left) && ts.isExportsIdentifier(leftmost.parent.right)))) { + hadError = true; + return node; + } + var sym = resolveEntityName(leftmost, 67108863 /* All */, /*ignoreErrors*/ true, /*dontResolveALias*/ true); + if (sym) { + if (isSymbolAccessible(sym, context.enclosingDeclaration, 67108863 /* All */, /*shouldComputeAliasesToMakeVisible*/ false).accessibility !== 0 /* Accessible */) { + hadError = true; + } + else { + (_b = (_a = context.tracker) === null || _a === void 0 ? void 0 : _a.trackSymbol) === null || _b === void 0 ? void 0 : _b.call(_a, sym, context.enclosingDeclaration, 67108863 /* All */); + includePrivateSymbol === null || includePrivateSymbol === void 0 ? void 0 : includePrivateSymbol(sym); + } + if (ts.isIdentifier(node)) { + var name = sym.flags & 262144 /* TypeParameter */ ? typeParameterToName(getDeclaredTypeOfSymbol(sym), context) : ts.getMutableClone(node); + name.symbol = sym; // for quickinfo, which uses identifier symbol information + return ts.setEmitFlags(ts.setOriginalNode(name, node), 16777216 /* NoAsciiEscaping */); + } + } + } + return ts.visitEachChild(node, visitExistingNodeTreeSymbols, ts.nullTransformationContext); + function getEffectiveDotDotDotForParameter(p) { + return p.dotDotDotToken || (p.type && ts.isJSDocVariadicType(p.type) ? ts.createToken(25 /* DotDotDotToken */) : undefined); + } + function rewriteModuleSpecifier(parent, lit) { + if (bundled) { + if (context.tracker && context.tracker.moduleResolverHost) { + var targetFile = getExternalModuleFileFromDeclaration(parent); + if (targetFile) { + var getCanonicalFileName = ts.createGetCanonicalFileName(!!host.useCaseSensitiveFileNames); + var resolverHost = { + getCanonicalFileName: getCanonicalFileName, + getCurrentDirectory: function () { return context.tracker.moduleResolverHost.getCurrentDirectory(); }, + getCommonSourceDirectory: function () { return context.tracker.moduleResolverHost.getCommonSourceDirectory(); } + }; + var newName = ts.getResolvedExternalModuleName(resolverHost, targetFile); + return ts.createLiteral(newName); + } + } + } + else { + if (context.tracker && context.tracker.trackExternalModuleSymbolOfImportTypeNode) { + var moduleSym = resolveExternalModuleNameWorker(lit, lit, /*moduleNotFoundError*/ undefined); + if (moduleSym) { + context.tracker.trackExternalModuleSymbolOfImportTypeNode(moduleSym); + } + } + } + return lit; + } + } + } + function symbolTableToDeclarationStatements(symbolTable, context, bundled) { + var serializePropertySymbolForClass = makeSerializePropertySymbol(ts.createProperty, 161 /* MethodDeclaration */, /*useAcessors*/ true); + var serializePropertySymbolForInterfaceWorker = makeSerializePropertySymbol(function (_decorators, mods, name, question, type, initializer) { return ts.createPropertySignature(mods, name, question, type, initializer); }, 160 /* MethodSignature */, /*useAcessors*/ false); + // TODO: Use `setOriginalNode` on original declaration names where possible so these declarations see some kind of + // declaration mapping + // We save the enclosing declaration off here so it's not adjusted by well-meaning declaration + // emit codepaths which want to apply more specific contexts (so we can still refer to the root real declaration + // we're trying to emit from later on) + var enclosingDeclaration = context.enclosingDeclaration; + var results = []; + var visitedSymbols = ts.createMap(); + var deferredPrivates; + var oldcontext = context; + context = __assign(__assign({}, oldcontext), { usedSymbolNames: ts.createMap(), remappedSymbolNames: ts.createMap(), tracker: __assign(__assign({}, oldcontext.tracker), { trackSymbol: function (sym, decl, meaning) { + var accessibleResult = isSymbolAccessible(sym, decl, meaning, /*computeALiases*/ false); + if (accessibleResult.accessibility === 0 /* Accessible */) { + // Lookup the root symbol of the chain of refs we'll use to access it and serialize it + var chain = lookupSymbolChainWorker(sym, context, meaning); + if (!(sym.flags & 4 /* Property */)) { + includePrivateSymbol(chain[0]); + } + } + else if (oldcontext.tracker && oldcontext.tracker.trackSymbol) { + oldcontext.tracker.trackSymbol(sym, decl, meaning); + } + } }) }); + if (oldcontext.usedSymbolNames) { + oldcontext.usedSymbolNames.forEach(function (_, name) { + context.usedSymbolNames.set(name, true); + }); + } + ts.forEachEntry(symbolTable, function (symbol, name) { + var baseName = ts.unescapeLeadingUnderscores(name); + void getInternalSymbolName(symbol, baseName); // Called to cache values into `usedSymbolNames` and `remappedSymbolNames` + }); + var addingDeclare = !bundled; + var exportEquals = symbolTable.get("export=" /* ExportEquals */); + if (exportEquals && symbolTable.size > 1 && exportEquals.flags & 2097152 /* Alias */) { + symbolTable = ts.createSymbolTable(); + // Remove extraneous elements from root symbol table (they'll be mixed back in when the target of the `export=` is looked up) + symbolTable.set("export=" /* ExportEquals */, exportEquals); + } + visitSymbolTable(symbolTable); + return mergeRedundantStatements(results); + function isIdentifierAndNotUndefined(node) { + return !!node && node.kind === 75 /* Identifier */; + } + function getNamesOfDeclaration(statement) { + if (ts.isVariableStatement(statement)) { + return ts.filter(ts.map(statement.declarationList.declarations, ts.getNameOfDeclaration), isIdentifierAndNotUndefined); + } + return ts.filter([ts.getNameOfDeclaration(statement)], isIdentifierAndNotUndefined); + } + function flattenExportAssignedNamespace(statements) { + var exportAssignment = ts.find(statements, ts.isExportAssignment); + var ns = ts.find(statements, ts.isModuleDeclaration); + if (ns && exportAssignment && exportAssignment.isExportEquals && + ts.isIdentifier(exportAssignment.expression) && ts.isIdentifier(ns.name) && ts.idText(ns.name) === ts.idText(exportAssignment.expression) && + ns.body && ts.isModuleBlock(ns.body)) { + // Pass 0: Correct situations where a module has both an `export = ns` and multiple top-level exports by stripping the export modifiers from + // the top-level exports and exporting them in the targeted ns, as can occur when a js file has both typedefs and `module.export` assignments + var excessExports = ts.filter(statements, function (s) { return !!(ts.getModifierFlags(s) & 1 /* Export */); }); + if (ts.length(excessExports)) { + ns.body.statements = ts.createNodeArray(__spreadArrays(ns.body.statements, [ts.createExportDeclaration( + /*decorators*/ undefined, + /*modifiers*/ undefined, ts.createNamedExports(ts.map(ts.flatMap(excessExports, function (e) { return getNamesOfDeclaration(e); }), function (id) { return ts.createExportSpecifier(/*alias*/ undefined, id); })), + /*moduleSpecifier*/ undefined)])); + } + // Pass 1: Flatten `export namespace _exports {} export = _exports;` so long as the `export=` only points at a single namespace declaration + if (!ts.find(statements, function (s) { return s !== ns && ts.nodeHasName(s, ns.name); })) { + results = []; + ts.forEach(ns.body.statements, function (s) { + addResult(s, 0 /* None */); // Recalculates the ambient (and export, if applicable from above) flag + }); + statements = __spreadArrays(ts.filter(statements, function (s) { return s !== ns && s !== exportAssignment; }), results); + } + } + return statements; + } + function mergeExportDeclarations(statements) { + // Pass 2: Combine all `export {}` declarations + var exports = ts.filter(statements, function (d) { return ts.isExportDeclaration(d) && !d.moduleSpecifier && !!d.exportClause && ts.isNamedExports(d.exportClause); }); + if (ts.length(exports) > 1) { + var nonExports = ts.filter(statements, function (d) { return !ts.isExportDeclaration(d) || !!d.moduleSpecifier || !d.exportClause; }); + statements = __spreadArrays(nonExports, [ts.createExportDeclaration( + /*decorators*/ undefined, + /*modifiers*/ undefined, ts.createNamedExports(ts.flatMap(exports, function (e) { return ts.cast(e.exportClause, ts.isNamedExports).elements; })), + /*moduleSpecifier*/ undefined)]); + } + // Pass 2b: Also combine all `export {} from "..."` declarations as needed + var reexports = ts.filter(statements, function (d) { return ts.isExportDeclaration(d) && !!d.moduleSpecifier && !!d.exportClause && ts.isNamedExports(d.exportClause); }); + if (ts.length(reexports) > 1) { + var groups = ts.group(reexports, function (decl) { return ts.isStringLiteral(decl.moduleSpecifier) ? ">" + decl.moduleSpecifier.text : ">"; }); + if (groups.length !== reexports.length) { + var _loop_8 = function (group_1) { + if (group_1.length > 1) { + // remove group members from statements and then merge group members and add back to statements + statements = __spreadArrays(ts.filter(statements, function (s) { return group_1.indexOf(s) === -1; }), [ + ts.createExportDeclaration( + /*decorators*/ undefined, + /*modifiers*/ undefined, ts.createNamedExports(ts.flatMap(group_1, function (e) { return ts.cast(e.exportClause, ts.isNamedExports).elements; })), group_1[0].moduleSpecifier) + ]); + } + }; + for (var _i = 0, groups_1 = groups; _i < groups_1.length; _i++) { + var group_1 = groups_1[_i]; + _loop_8(group_1); + } + } + } + return statements; + } + function inlineExportModifiers(statements) { + // Pass 3: Move all `export {}`'s to `export` modifiers where possible + var exportDecl = ts.find(statements, function (d) { return ts.isExportDeclaration(d) && !d.moduleSpecifier && !!d.exportClause; }); + if (exportDecl && exportDecl.exportClause && ts.isNamedExports(exportDecl.exportClause)) { + var replacements = ts.mapDefined(exportDecl.exportClause.elements, function (e) { + if (!e.propertyName) { + // export {name} - look thru `statements` for `name`, and if all results can take an `export` modifier, do so and filter it + var associated = ts.filter(statements, function (s) { return ts.nodeHasName(s, e.name); }); + if (ts.length(associated) && ts.every(associated, canHaveExportModifier)) { + ts.forEach(associated, addExportModifier); + return undefined; + } + } + return e; + }); + if (!ts.length(replacements)) { + // all clauses removed, filter the export declaration + statements = ts.filter(statements, function (s) { return s !== exportDecl; }); + } + else { + // some items filtered, others not - update the export declaration + // (mutating because why not, we're building a whole new tree here anyway) + exportDecl.exportClause.elements = ts.createNodeArray(replacements); + } + } + return statements; + } + function mergeRedundantStatements(statements) { + statements = flattenExportAssignedNamespace(statements); + statements = mergeExportDeclarations(statements); + statements = inlineExportModifiers(statements); + // Not a cleanup, but as a final step: If there is a mix of `export` and non-`export` declarations, but no `export =` or `export {}` add a `export {};` so + // declaration privacy is respected. + if (enclosingDeclaration && + ((ts.isSourceFile(enclosingDeclaration) && ts.isExternalOrCommonJsModule(enclosingDeclaration)) || ts.isModuleDeclaration(enclosingDeclaration)) && + (!ts.some(statements, ts.isExternalModuleIndicator) || (!ts.hasScopeMarker(statements) && ts.some(statements, ts.needsScopeMarker)))) { + statements.push(ts.createEmptyExports()); + } + return statements; + } + function canHaveExportModifier(node) { + return ts.isEnumDeclaration(node) || + ts.isVariableStatement(node) || + ts.isFunctionDeclaration(node) || + ts.isClassDeclaration(node) || + (ts.isModuleDeclaration(node) && !ts.isExternalModuleAugmentation(node) && !ts.isGlobalScopeAugmentation(node)) || + ts.isInterfaceDeclaration(node) || + isTypeDeclaration(node); + } + function addExportModifier(statement) { + var flags = (ts.getModifierFlags(statement) | 1 /* Export */) & ~2 /* Ambient */; + statement.modifiers = ts.createNodeArray(ts.createModifiersFromModifierFlags(flags)); + statement.modifierFlagsCache = 0; + } + function visitSymbolTable(symbolTable, suppressNewPrivateContext, propertyAsAlias) { + var oldDeferredPrivates = deferredPrivates; + if (!suppressNewPrivateContext) { + deferredPrivates = ts.createMap(); + } + symbolTable.forEach(function (symbol) { + serializeSymbol(symbol, /*isPrivate*/ false, !!propertyAsAlias); + }); + if (!suppressNewPrivateContext) { + // deferredPrivates will be filled up by visiting the symbol table + // And will continue to iterate as elements are added while visited `deferredPrivates` + // (As that's how a map iterator is defined to work) + deferredPrivates.forEach(function (symbol) { + serializeSymbol(symbol, /*isPrivate*/ true, !!propertyAsAlias); + }); + } + deferredPrivates = oldDeferredPrivates; + } + function serializeSymbol(symbol, isPrivate, propertyAsAlias) { + // cache visited list based on merged symbol, since we want to use the unmerged top-level symbol, but + // still skip reserializing it if we encounter the merged product later on + var visitedSym = getMergedSymbol(symbol); + if (visitedSymbols.has("" + getSymbolId(visitedSym))) { + return; // Already printed + } + visitedSymbols.set("" + getSymbolId(visitedSym), true); + // Only actually serialize symbols within the correct enclosing declaration, otherwise do nothing with the out-of-context symbol + var skipMembershipCheck = !isPrivate; // We only call this on exported symbols when we know they're in the correct scope + if (skipMembershipCheck || (!!ts.length(symbol.declarations) && ts.some(symbol.declarations, function (d) { return !!ts.findAncestor(d, function (n) { return n === enclosingDeclaration; }); }))) { + var oldContext = context; + context = cloneNodeBuilderContext(context); + var result = serializeSymbolWorker(symbol, isPrivate, propertyAsAlias); + context = oldContext; + return result; + } + } + // Synthesize declarations for a symbol - might be an Interface, a Class, a Namespace, a Type, a Variable (const, let, or var), an Alias + // or a merge of some number of those. + // An interesting challenge is ensuring that when classes merge with namespaces and interfaces, is keeping + // each symbol in only one of the representations + // Also, synthesizing a default export of some kind + // If it's an alias: emit `export default ref` + // If it's a property: emit `export default _default` with a `_default` prop + // If it's a class/interface/function: emit a class/interface/function with a `default` modifier + // These forms can merge, eg (`export default 12; export default interface A {}`) + function serializeSymbolWorker(symbol, isPrivate, propertyAsAlias) { + var symbolName = ts.unescapeLeadingUnderscores(symbol.escapedName); + var isDefault = symbol.escapedName === "default" /* Default */; + if (!(context.flags & 131072 /* AllowAnonymousIdentifier */) && ts.isStringANonContextualKeyword(symbolName) && !isDefault) { + // Oh no. We cannot use this symbol's name as it's name... It's likely some jsdoc had an invalid name like `export` or `default` :( + context.encounteredError = true; + // TODO: Issue error via symbol tracker? + return; // If we need to emit a private with a keyword name, we're done for, since something else will try to refer to it by that name + } + var needsPostExportDefault = isDefault && !!(symbol.flags & -113 /* ExportDoesNotSupportDefaultModifier */ + || (symbol.flags & 16 /* Function */ && ts.length(getPropertiesOfType(getTypeOfSymbol(symbol))))) && !(symbol.flags & 2097152 /* Alias */); // An alias symbol should preclude needing to make an alias ourselves + if (needsPostExportDefault) { + isPrivate = true; + } + var modifierFlags = (!isPrivate ? 1 /* Export */ : 0) | (isDefault && !needsPostExportDefault ? 512 /* Default */ : 0); + var isConstMergedWithNS = symbol.flags & 1536 /* Module */ && + symbol.flags & (2 /* BlockScopedVariable */ | 1 /* FunctionScopedVariable */ | 4 /* Property */) && + symbol.escapedName !== "export=" /* ExportEquals */; + var isConstMergedWithNSPrintableAsSignatureMerge = isConstMergedWithNS && isTypeRepresentableAsFunctionNamespaceMerge(getTypeOfSymbol(symbol), symbol); + if (symbol.flags & (16 /* Function */ | 8192 /* Method */) || isConstMergedWithNSPrintableAsSignatureMerge) { + serializeAsFunctionNamespaceMerge(getTypeOfSymbol(symbol), symbol, getInternalSymbolName(symbol, symbolName), modifierFlags); + } + if (symbol.flags & 524288 /* TypeAlias */) { + serializeTypeAlias(symbol, symbolName, modifierFlags); + } + // Need to skip over export= symbols below - json source files get a single `Property` flagged + // symbol of name `export=` which needs to be handled like an alias. It's not great, but it is what it is. + if (symbol.flags & (2 /* BlockScopedVariable */ | 1 /* FunctionScopedVariable */ | 4 /* Property */) + && symbol.escapedName !== "export=" /* ExportEquals */ + && !(symbol.flags & 4194304 /* Prototype */) + && !(symbol.flags & 32 /* Class */) + && !isConstMergedWithNSPrintableAsSignatureMerge) { + serializeVariableOrProperty(symbol, symbolName, isPrivate, needsPostExportDefault, propertyAsAlias, modifierFlags); + } + if (symbol.flags & 384 /* Enum */) { + serializeEnum(symbol, symbolName, modifierFlags); + } + if (symbol.flags & 32 /* Class */) { + if (symbol.flags & 4 /* Property */ && ts.isBinaryExpression(symbol.valueDeclaration.parent) && ts.isClassExpression(symbol.valueDeclaration.parent.right)) { + // Looks like a `module.exports.Sub = class {}` - if we serialize `symbol` as a class, the result will have no members, + // since the classiness is actually from the target of the effective alias the symbol is. yes. A BlockScopedVariable|Class|Property + // _really_ acts like an Alias, and none of a BlockScopedVariable, Class, or Property. This is the travesty of JS binding today. + serializeAsAlias(symbol, getInternalSymbolName(symbol, symbolName), modifierFlags); + } + else { + serializeAsClass(symbol, getInternalSymbolName(symbol, symbolName), modifierFlags); + } + } + if ((symbol.flags & (512 /* ValueModule */ | 1024 /* NamespaceModule */) && (!isConstMergedWithNS || isTypeOnlyNamespace(symbol))) || isConstMergedWithNSPrintableAsSignatureMerge) { + serializeModule(symbol, symbolName, modifierFlags); + } + if (symbol.flags & 64 /* Interface */) { + serializeInterface(symbol, symbolName, modifierFlags); + } + if (symbol.flags & 2097152 /* Alias */) { + serializeAsAlias(symbol, getInternalSymbolName(symbol, symbolName), modifierFlags); + } + if (symbol.flags & 4 /* Property */ && symbol.escapedName === "export=" /* ExportEquals */) { + serializeMaybeAliasAssignment(symbol); + } + if (symbol.flags & 8388608 /* ExportStar */) { + // synthesize export * from "moduleReference" + // Straightforward - only one thing to do - make an export declaration + for (var _i = 0, _a = symbol.declarations; _i < _a.length; _i++) { + var node = _a[_i]; + var resolvedModule = resolveExternalModuleName(node, node.moduleSpecifier); + if (!resolvedModule) + continue; + addResult(ts.createExportDeclaration(/*decorators*/ undefined, /*modifiers*/ undefined, /*exportClause*/ undefined, ts.createLiteral(getSpecifierForModuleSymbol(resolvedModule, context))), 0 /* None */); + } + } + if (needsPostExportDefault) { + addResult(ts.createExportAssignment(/*decorators*/ undefined, /*modifiers*/ undefined, /*isExportAssignment*/ false, ts.createIdentifier(getInternalSymbolName(symbol, symbolName))), 0 /* None */); + } + } + function includePrivateSymbol(symbol) { + if (ts.some(symbol.declarations, ts.isParameterDeclaration)) + return; + ts.Debug.assertIsDefined(deferredPrivates); + getUnusedName(ts.unescapeLeadingUnderscores(symbol.escapedName), symbol); // Call to cache unique name for symbol + deferredPrivates.set("" + getSymbolId(symbol), symbol); + } + function isExportingScope(enclosingDeclaration) { + return ((ts.isSourceFile(enclosingDeclaration) && (ts.isExternalOrCommonJsModule(enclosingDeclaration) || ts.isJsonSourceFile(enclosingDeclaration))) || + (ts.isAmbientModule(enclosingDeclaration) && !ts.isGlobalScopeAugmentation(enclosingDeclaration))); + } + // Prepends a `declare` and/or `export` modifier if the context requires it, and then adds `node` to `result` and returns `node` + // Note: This _mutates_ `node` without using `updateNode` - the assumption being that all nodes should be manufactured fresh by the node builder + function addResult(node, additionalModifierFlags) { + var newModifierFlags = 0 /* None */; + if (additionalModifierFlags & 1 /* Export */ && + enclosingDeclaration && + isExportingScope(enclosingDeclaration) && + canHaveExportModifier(node)) { + // Classes, namespaces, variables, functions, interfaces, and types should all be `export`ed in a module context if not private + newModifierFlags |= 1 /* Export */; + } + if (addingDeclare && !(newModifierFlags & 1 /* Export */) && + (!enclosingDeclaration || !(enclosingDeclaration.flags & 8388608 /* Ambient */)) && + (ts.isEnumDeclaration(node) || ts.isVariableStatement(node) || ts.isFunctionDeclaration(node) || ts.isClassDeclaration(node) || ts.isModuleDeclaration(node))) { + // Classes, namespaces, variables, enums, and functions all need `declare` modifiers to be valid in a declaration file top-level scope + newModifierFlags |= 2 /* Ambient */; + } + if ((additionalModifierFlags & 512 /* Default */) && (ts.isClassDeclaration(node) || ts.isInterfaceDeclaration(node) || ts.isFunctionDeclaration(node))) { + newModifierFlags |= 512 /* Default */; + } + if (newModifierFlags) { + node.modifiers = ts.createNodeArray(ts.createModifiersFromModifierFlags(newModifierFlags | ts.getModifierFlags(node))); + node.modifierFlagsCache = 0; // Reset computed flags cache + } + results.push(node); + } + function serializeTypeAlias(symbol, symbolName, modifierFlags) { + var aliasType = getDeclaredTypeOfTypeAlias(symbol); + var typeParams = getSymbolLinks(symbol).typeParameters; + var typeParamDecls = ts.map(typeParams, function (p) { return typeParameterToDeclaration(p, context); }); + var jsdocAliasDecl = ts.find(symbol.declarations, ts.isJSDocTypeAlias); + var commentText = jsdocAliasDecl ? jsdocAliasDecl.comment || jsdocAliasDecl.parent.comment : undefined; + var oldFlags = context.flags; + context.flags |= 8388608 /* InTypeAlias */; + addResult(ts.setSyntheticLeadingComments(ts.createTypeAliasDeclaration(/*decorators*/ undefined, /*modifiers*/ undefined, getInternalSymbolName(symbol, symbolName), typeParamDecls, typeToTypeNodeHelper(aliasType, context)), !commentText ? [] : [{ kind: 3 /* MultiLineCommentTrivia */, text: "*\n * " + commentText.replace(/\n/g, "\n * ") + "\n ", pos: -1, end: -1, hasTrailingNewLine: true }]), modifierFlags); + context.flags = oldFlags; + } + function serializeInterface(symbol, symbolName, modifierFlags) { + var interfaceType = getDeclaredTypeOfClassOrInterface(symbol); + var localParams = getLocalTypeParametersOfClassOrInterfaceOrTypeAlias(symbol); + var typeParamDecls = ts.map(localParams, function (p) { return typeParameterToDeclaration(p, context); }); + var baseTypes = getBaseTypes(interfaceType); + var baseType = ts.length(baseTypes) ? getIntersectionType(baseTypes) : undefined; + var members = ts.flatMap(getPropertiesOfType(interfaceType), function (p) { return serializePropertySymbolForInterface(p, baseType); }); + var callSignatures = serializeSignatures(0 /* Call */, interfaceType, baseType, 165 /* CallSignature */); + var constructSignatures = serializeSignatures(1 /* Construct */, interfaceType, baseType, 166 /* ConstructSignature */); + var indexSignatures = serializeIndexSignatures(interfaceType, baseType); + var heritageClauses = !ts.length(baseTypes) ? undefined : [ts.createHeritageClause(90 /* ExtendsKeyword */, ts.mapDefined(baseTypes, function (b) { return trySerializeAsTypeReference(b); }))]; + addResult(ts.createInterfaceDeclaration( + /*decorators*/ undefined, + /*modifiers*/ undefined, getInternalSymbolName(symbol, symbolName), typeParamDecls, heritageClauses, __spreadArrays(indexSignatures, constructSignatures, callSignatures, members)), modifierFlags); + } + function getNamespaceMembersForSerialization(symbol) { + return !symbol.exports ? [] : ts.filter(ts.arrayFrom(symbol.exports.values()), isNamespaceMember); + } + function isTypeOnlyNamespace(symbol) { + return ts.every(getNamespaceMembersForSerialization(symbol), function (m) { return !(resolveSymbol(m).flags & 111551 /* Value */); }); + } + function serializeModule(symbol, symbolName, modifierFlags) { + var members = getNamespaceMembersForSerialization(symbol); + // Split NS members up by declaration - members whose parent symbol is the ns symbol vs those whose is not (but were added in later via merging) + var locationMap = ts.arrayToMultiMap(members, function (m) { return m.parent && m.parent === symbol ? "real" : "merged"; }); + var realMembers = locationMap.get("real") || ts.emptyArray; + var mergedMembers = locationMap.get("merged") || ts.emptyArray; + // TODO: `suppressNewPrivateContext` is questionable -we need to simply be emitting privates in whatever scope they were declared in, rather + // than whatever scope we traverse to them in. That's a bit of a complex rewrite, since we're not _actually_ tracking privates at all in advance, + // so we don't even have placeholders to fill in. + if (ts.length(realMembers)) { + var localName = getInternalSymbolName(symbol, symbolName); + serializeAsNamespaceDeclaration(realMembers, localName, modifierFlags, !!(symbol.flags & (16 /* Function */ | 67108864 /* Assignment */))); + } + if (ts.length(mergedMembers)) { + var containingFile_1 = ts.getSourceFileOfNode(context.enclosingDeclaration); + var localName = getInternalSymbolName(symbol, symbolName); + var nsBody = ts.createModuleBlock([ts.createExportDeclaration( + /*decorators*/ undefined, + /*modifiers*/ undefined, ts.createNamedExports(ts.mapDefined(ts.filter(mergedMembers, function (n) { return n.escapedName !== "export=" /* ExportEquals */; }), function (s) { + var _a, _b; + var name = ts.unescapeLeadingUnderscores(s.escapedName); + var localName = getInternalSymbolName(s, name); + var aliasDecl = s.declarations && getDeclarationOfAliasSymbol(s); + if (containingFile_1 && (aliasDecl ? containingFile_1 !== ts.getSourceFileOfNode(aliasDecl) : !ts.some(s.declarations, function (d) { return ts.getSourceFileOfNode(d) === containingFile_1; }))) { + (_b = (_a = context.tracker) === null || _a === void 0 ? void 0 : _a.reportNonlocalAugmentation) === null || _b === void 0 ? void 0 : _b.call(_a, containingFile_1, symbol, s); + return undefined; + } + var target = aliasDecl && getTargetOfAliasDeclaration(aliasDecl, /*dontRecursivelyResolve*/ true); + includePrivateSymbol(target || s); + var targetName = target ? getInternalSymbolName(target, ts.unescapeLeadingUnderscores(target.escapedName)) : localName; + return ts.createExportSpecifier(name === targetName ? undefined : targetName, name); + })))]); + addResult(ts.createModuleDeclaration( + /*decorators*/ undefined, + /*modifiers*/ undefined, ts.createIdentifier(localName), nsBody, 16 /* Namespace */), 0 /* None */); + } + } + function serializeEnum(symbol, symbolName, modifierFlags) { + addResult(ts.createEnumDeclaration( + /*decorators*/ undefined, ts.createModifiersFromModifierFlags(isConstEnumSymbol(symbol) ? 2048 /* Const */ : 0), getInternalSymbolName(symbol, symbolName), ts.map(ts.filter(getPropertiesOfType(getTypeOfSymbol(symbol)), function (p) { return !!(p.flags & 8 /* EnumMember */); }), function (p) { + // TODO: Handle computed names + // I hate that to get the initialized value we need to walk back to the declarations here; but there's no + // other way to get the possible const value of an enum member that I'm aware of, as the value is cached + // _on the declaration_, not on the declaration's symbol... + var initializedValue = p.declarations && p.declarations[0] && ts.isEnumMember(p.declarations[0]) && getConstantValue(p.declarations[0]); + return ts.createEnumMember(ts.unescapeLeadingUnderscores(p.escapedName), initializedValue === undefined ? undefined : ts.createLiteral(initializedValue)); + })), modifierFlags); + } + function serializeVariableOrProperty(symbol, symbolName, isPrivate, needsPostExportDefault, propertyAsAlias, modifierFlags) { + if (propertyAsAlias) { + serializeMaybeAliasAssignment(symbol); + } + else { + var type = getTypeOfSymbol(symbol); + var localName = getInternalSymbolName(symbol, symbolName); + if (!(symbol.flags & 16 /* Function */) && isTypeRepresentableAsFunctionNamespaceMerge(type, symbol)) { + // If the type looks like a function declaration + ns could represent it, and it's type is sourced locally, rewrite it into a function declaration + ns + serializeAsFunctionNamespaceMerge(type, symbol, localName, modifierFlags); + } + else { + // A Class + Property merge is made for a `module.exports.Member = class {}`, and it doesn't serialize well as either a class _or_ a property symbol - in fact, _it behaves like an alias!_ + // `var` is `FunctionScopedVariable`, `const` and `let` are `BlockScopedVariable`, and `module.exports.thing =` is `Property` + var flags = !(symbol.flags & 2 /* BlockScopedVariable */) ? undefined + : isConstVariable(symbol) ? 2 /* Const */ + : 1 /* Let */; + var name = (needsPostExportDefault || !(symbol.flags & 4 /* Property */)) ? localName : getUnusedName(localName, symbol); + var textRange = symbol.declarations && ts.find(symbol.declarations, function (d) { return ts.isVariableDeclaration(d); }); + if (textRange && ts.isVariableDeclarationList(textRange.parent) && textRange.parent.declarations.length === 1) { + textRange = textRange.parent.parent; + } + var statement = ts.setTextRange(ts.createVariableStatement(/*modifiers*/ undefined, ts.createVariableDeclarationList([ + ts.createVariableDeclaration(name, serializeTypeForDeclaration(context, type, symbol, enclosingDeclaration, includePrivateSymbol, bundled)) + ], flags)), textRange); + addResult(statement, name !== localName ? modifierFlags & ~1 /* Export */ : modifierFlags); + if (name !== localName && !isPrivate) { + // We rename the variable declaration we generate for Property symbols since they may have a name which + // conflicts with a local declaration. For example, given input: + // ``` + // function g() {} + // module.exports.g = g + // ``` + // In such a situation, we have a local variable named `g`, and a separate exported variable named `g`. + // Naively, we would emit + // ``` + // function g() {} + // export const g: typeof g; + // ``` + // That's obviously incorrect - the `g` in the type annotation needs to refer to the local `g`, but + // the export declaration shadows it. + // To work around that, we instead write + // ``` + // function g() {} + // const g_1: typeof g; + // export { g_1 as g }; + // ``` + // To create an export named `g` that does _not_ shadow the local `g` + addResult(ts.createExportDeclaration( + /*decorators*/ undefined, + /*modifiers*/ undefined, ts.createNamedExports([ts.createExportSpecifier(name, localName)])), 0 /* None */); + } + } + } + } + function serializeAsFunctionNamespaceMerge(type, symbol, localName, modifierFlags) { + var signatures = getSignaturesOfType(type, 0 /* Call */); + for (var _i = 0, signatures_2 = signatures; _i < signatures_2.length; _i++) { + var sig = signatures_2[_i]; + // Each overload becomes a separate function declaration, in order + var decl = signatureToSignatureDeclarationHelper(sig, 244 /* FunctionDeclaration */, context, includePrivateSymbol, bundled); + decl.name = ts.createIdentifier(localName); + // for expressions assigned to `var`s, use the `var` as the text range + addResult(ts.setTextRange(decl, sig.declaration && ts.isVariableDeclaration(sig.declaration.parent) && sig.declaration.parent.parent || sig.declaration), modifierFlags); + } + // Module symbol emit will take care of module-y members, provided it has exports + if (!(symbol.flags & (512 /* ValueModule */ | 1024 /* NamespaceModule */) && !!symbol.exports && !!symbol.exports.size)) { + var props = ts.filter(getPropertiesOfType(type), isNamespaceMember); + serializeAsNamespaceDeclaration(props, localName, modifierFlags, /*suppressNewPrivateContext*/ true); + } + } + function serializeAsNamespaceDeclaration(props, localName, modifierFlags, suppressNewPrivateContext) { + if (ts.length(props)) { + var localVsRemoteMap = ts.arrayToMultiMap(props, function (p) { + return !ts.length(p.declarations) || ts.some(p.declarations, function (d) { + return ts.getSourceFileOfNode(d) === ts.getSourceFileOfNode(context.enclosingDeclaration); + }) ? "local" : "remote"; + }); + var localProps = localVsRemoteMap.get("local") || ts.emptyArray; + // handle remote props first - we need to make an `import` declaration that points at the module containing each remote + // prop in the outermost scope (TODO: a namespace within a namespace would need to be appropriately handled by this) + // Example: + // import Foo_1 = require("./exporter"); + // export namespace ns { + // import Foo = Foo_1.Foo; + // export { Foo }; + // export const c: number; + // } + // This is needed because in JS, statements like `const x = require("./f")` support both type and value lookup, even if they're + // normally just value lookup (so it functions kinda like an alias even when it's not an alias) + // _Usually_, we'll simply print the top-level as an alias instead of a `var` in such situations, however is is theoretically + // possible to encounter a situation where a type has members from both the current file and other files - in those situations, + // emit akin to the above would be needed. + // Add a namespace + var fakespace = ts.createModuleDeclaration(/*decorators*/ undefined, /*modifiers*/ undefined, ts.createIdentifier(localName), ts.createModuleBlock([]), 16 /* Namespace */); + fakespace.flags ^= 8 /* Synthesized */; // unset synthesized so it is usable as an enclosing declaration + fakespace.parent = enclosingDeclaration; + fakespace.locals = ts.createSymbolTable(props); + fakespace.symbol = props[0].parent; + var oldResults = results; + results = []; + var oldAddingDeclare = addingDeclare; + addingDeclare = false; + var subcontext = __assign(__assign({}, context), { enclosingDeclaration: fakespace }); + var oldContext = context; + context = subcontext; + // TODO: implement handling for the localVsRemoteMap.get("remote") - should be difficult to trigger (see comment above), as only interesting cross-file js merges should make this possible + visitSymbolTable(ts.createSymbolTable(localProps), suppressNewPrivateContext, /*propertyAsAlias*/ true); + context = oldContext; + addingDeclare = oldAddingDeclare; + var declarations = results; + results = oldResults; + fakespace.flags ^= 8 /* Synthesized */; // reset synthesized + fakespace.parent = undefined; + fakespace.locals = undefined; + fakespace.symbol = undefined; + fakespace.body = ts.createModuleBlock(declarations); + addResult(fakespace, modifierFlags); // namespaces can never be default exported + } + } + function isNamespaceMember(p) { + return !(p.flags & 4194304 /* Prototype */ || p.escapedName === "prototype" || p.valueDeclaration && ts.isClassLike(p.valueDeclaration.parent)); + } + function serializeAsClass(symbol, localName, modifierFlags) { + var localParams = getLocalTypeParametersOfClassOrInterfaceOrTypeAlias(symbol); + var typeParamDecls = ts.map(localParams, function (p) { return typeParameterToDeclaration(p, context); }); + var classType = getDeclaredTypeOfClassOrInterface(symbol); + var baseTypes = getBaseTypes(classType); + var implementsTypes = getImplementsTypes(classType); + var staticType = getTypeOfSymbol(symbol); + var staticBaseType = getBaseConstructorTypeOfClass(staticType); + var heritageClauses = __spreadArrays(!ts.length(baseTypes) ? [] : [ts.createHeritageClause(90 /* ExtendsKeyword */, ts.map(baseTypes, function (b) { return serializeBaseType(b, staticBaseType, localName); }))], !ts.length(implementsTypes) ? [] : [ts.createHeritageClause(113 /* ImplementsKeyword */, ts.map(implementsTypes, function (b) { return serializeBaseType(b, staticBaseType, localName); }))]); + var symbolProps = getNonInterhitedProperties(classType, baseTypes, getPropertiesOfType(classType)); + var publicSymbolProps = ts.filter(symbolProps, function (s) { + // `valueDeclaration` could be undefined if inherited from + // a union/intersection base type, but inherited properties + // don't matter here. + var valueDecl = s.valueDeclaration; + return valueDecl && !(ts.isNamedDeclaration(valueDecl) && ts.isPrivateIdentifier(valueDecl.name)); + }); + var hasPrivateIdentifier = ts.some(symbolProps, function (s) { + // `valueDeclaration` could be undefined if inherited from + // a union/intersection base type, but inherited properties + // don't matter here. + var valueDecl = s.valueDeclaration; + return valueDecl && ts.isNamedDeclaration(valueDecl) && ts.isPrivateIdentifier(valueDecl.name); + }); + // Boil down all private properties into a single one. + var privateProperties = hasPrivateIdentifier ? + [ts.createProperty( + /*decorators*/ undefined, + /*modifiers*/ undefined, ts.createPrivateIdentifier("#private"), + /*questionOrExclamationToken*/ undefined, + /*type*/ undefined, + /*initializer*/ undefined)] : + ts.emptyArray; + var publicProperties = ts.flatMap(publicSymbolProps, function (p) { return serializePropertySymbolForClass(p, /*isStatic*/ false, baseTypes[0]); }); + // Consider static members empty if symbol also has function or module meaning - function namespacey emit will handle statics + var staticMembers = ts.flatMap(ts.filter(getPropertiesOfType(staticType), function (p) { return !(p.flags & 4194304 /* Prototype */) && p.escapedName !== "prototype" && !isNamespaceMember(p); }), function (p) { return serializePropertySymbolForClass(p, /*isStatic*/ true, staticBaseType); }); + var constructors = serializeSignatures(1 /* Construct */, staticType, baseTypes[0], 162 /* Constructor */); + for (var _i = 0, constructors_1 = constructors; _i < constructors_1.length; _i++) { + var c = constructors_1[_i]; + // A constructor's return type and type parameters are supposed to be controlled by the enclosing class declaration + // `signatureToSignatureDeclarationHelper` appends them regardless, so for now we delete them here + c.type = undefined; + c.typeParameters = undefined; + } + var indexSignatures = serializeIndexSignatures(classType, baseTypes[0]); + addResult(ts.setTextRange(ts.createClassDeclaration( + /*decorators*/ undefined, + /*modifiers*/ undefined, localName, typeParamDecls, heritageClauses, __spreadArrays(indexSignatures, staticMembers, constructors, publicProperties, privateProperties)), symbol.declarations && ts.filter(symbol.declarations, function (d) { return ts.isClassDeclaration(d) || ts.isClassExpression(d); })[0]), modifierFlags); + } + function serializeAsAlias(symbol, localName, modifierFlags) { + // synthesize an alias, eg `export { symbolName as Name }` + // need to mark the alias `symbol` points at + // as something we need to serialize as a private declaration as well + var node = getDeclarationOfAliasSymbol(symbol); + if (!node) + return ts.Debug.fail(); + var target = getMergedSymbol(getTargetOfAliasDeclaration(node, /*dontRecursivelyResolve*/ true)); + if (!target) { + return; + } + var verbatimTargetName = ts.unescapeLeadingUnderscores(target.escapedName); + if (verbatimTargetName === "export=" /* ExportEquals */ && (compilerOptions.esModuleInterop || compilerOptions.allowSyntheticDefaultImports)) { + // target refers to an `export=` symbol that was hoisted into a synthetic default - rename here to match + verbatimTargetName = "default" /* Default */; + } + var targetName = getInternalSymbolName(target, verbatimTargetName); + includePrivateSymbol(target); // the target may be within the same scope - attempt to serialize it first + switch (node.kind) { + case 253 /* ImportEqualsDeclaration */: + // Could be a local `import localName = ns.member` or + // an external `import localName = require("whatever")` + var isLocalImport = !(target.flags & 512 /* ValueModule */); + addResult(ts.createImportEqualsDeclaration( + /*decorators*/ undefined, + /*modifiers*/ undefined, ts.createIdentifier(localName), isLocalImport + ? symbolToName(target, context, 67108863 /* All */, /*expectsIdentifier*/ false) + : ts.createExternalModuleReference(ts.createLiteral(getSpecifierForModuleSymbol(symbol, context)))), isLocalImport ? modifierFlags : 0 /* None */); + break; + case 252 /* NamespaceExportDeclaration */: + // export as namespace foo + // TODO: Not part of a file's local or export symbol tables + // Is bound into file.symbol.globalExports instead, which we don't currently traverse + addResult(ts.createNamespaceExportDeclaration(ts.idText(node.name)), 0 /* None */); + break; + case 255 /* ImportClause */: + addResult(ts.createImportDeclaration( + /*decorators*/ undefined, + /*modifiers*/ undefined, ts.createImportClause(ts.createIdentifier(localName), /*namedBindings*/ undefined), + // We use `target.parent || target` below as `target.parent` is unset when the target is a module which has been export assigned + // And then made into a default by the `esModuleInterop` or `allowSyntheticDefaultImports` flag + // In such cases, the `target` refers to the module itself already + ts.createLiteral(getSpecifierForModuleSymbol(target.parent || target, context))), 0 /* None */); + break; + case 256 /* NamespaceImport */: + addResult(ts.createImportDeclaration( + /*decorators*/ undefined, + /*modifiers*/ undefined, ts.createImportClause(/*importClause*/ undefined, ts.createNamespaceImport(ts.createIdentifier(localName))), ts.createLiteral(getSpecifierForModuleSymbol(target, context))), 0 /* None */); + break; + case 262 /* NamespaceExport */: + addResult(ts.createExportDeclaration( + /*decorators*/ undefined, + /*modifiers*/ undefined, ts.createNamespaceExport(ts.createIdentifier(localName)), ts.createLiteral(getSpecifierForModuleSymbol(target, context))), 0 /* None */); + break; + case 258 /* ImportSpecifier */: + addResult(ts.createImportDeclaration( + /*decorators*/ undefined, + /*modifiers*/ undefined, ts.createImportClause(/*importClause*/ undefined, ts.createNamedImports([ + ts.createImportSpecifier(localName !== verbatimTargetName ? ts.createIdentifier(verbatimTargetName) : undefined, ts.createIdentifier(localName)) + ])), ts.createLiteral(getSpecifierForModuleSymbol(target.parent || target, context))), 0 /* None */); + break; + case 263 /* ExportSpecifier */: + // does not use localName because the symbol name in this case refers to the name in the exports table, + // which we must exactly preserve + var specifier = node.parent.parent.moduleSpecifier; + // targetName is only used when the target is local, as otherwise the target is an alias that points at + // another file + serializeExportSpecifier(ts.unescapeLeadingUnderscores(symbol.escapedName), specifier ? verbatimTargetName : targetName, specifier && ts.isStringLiteralLike(specifier) ? ts.createLiteral(specifier.text) : undefined); + break; + case 259 /* ExportAssignment */: + serializeMaybeAliasAssignment(symbol); + break; + case 209 /* BinaryExpression */: + case 194 /* PropertyAccessExpression */: + // Could be best encoded as though an export specifier or as though an export assignment + // If name is default or export=, do an export assignment + // Otherwise do an export specifier + if (symbol.escapedName === "default" /* Default */ || symbol.escapedName === "export=" /* ExportEquals */) { + serializeMaybeAliasAssignment(symbol); + } + else { + serializeExportSpecifier(localName, targetName); + } + break; + default: + return ts.Debug.failBadSyntaxKind(node, "Unhandled alias declaration kind in symbol serializer!"); + } + } + function serializeExportSpecifier(localName, targetName, specifier) { + addResult(ts.createExportDeclaration( + /*decorators*/ undefined, + /*modifiers*/ undefined, ts.createNamedExports([ts.createExportSpecifier(localName !== targetName ? targetName : undefined, localName)]), specifier), 0 /* None */); + } + function serializeMaybeAliasAssignment(symbol) { + if (symbol.flags & 4194304 /* Prototype */) { + return; + } + var name = ts.unescapeLeadingUnderscores(symbol.escapedName); + var isExportEquals = name === "export=" /* ExportEquals */; + var isDefault = name === "default" /* Default */; + var isExportAssignment = isExportEquals || isDefault; + // synthesize export = ref + // ref should refer to either be a locally scoped symbol which we need to emit, or + // a reference to another namespace/module which we may need to emit an `import` statement for + var aliasDecl = symbol.declarations && getDeclarationOfAliasSymbol(symbol); + // serialize what the alias points to, preserve the declaration's initializer + var target = aliasDecl && getTargetOfAliasDeclaration(aliasDecl, /*dontRecursivelyResolve*/ true); + // If the target resolves and resolves to a thing defined in this file, emit as an alias, otherwise emit as a const + if (target && ts.length(target.declarations) && ts.some(target.declarations, function (d) { return ts.getSourceFileOfNode(d) === ts.getSourceFileOfNode(enclosingDeclaration); })) { + // In case `target` refers to a namespace member, look at the declaration and serialize the leftmost symbol in it + // eg, `namespace A { export class B {} }; exports = A.B;` + // Technically, this is all that's required in the case where the assignment is an entity name expression + var expr = isExportAssignment ? ts.getExportAssignmentExpression(aliasDecl) : ts.getPropertyAssignmentAliasLikeExpression(aliasDecl); + var first_1 = ts.isEntityNameExpression(expr) ? getFirstNonModuleExportsIdentifier(expr) : undefined; + var referenced = first_1 && resolveEntityName(first_1, 67108863 /* All */, /*ignoreErrors*/ true, /*dontResolveAlias*/ true, enclosingDeclaration); + if (referenced || target) { + includePrivateSymbol(referenced || target); + } + // We disable the context's symbol tracker for the duration of this name serialization + // as, by virtue of being here, the name is required to print something, and we don't want to + // issue a visibility error on it. Only anonymous classes that an alias points at _would_ issue + // a visibility error here (as they're not visible within any scope), but we want to hoist them + // into the containing scope anyway, so we want to skip the visibility checks. + var oldTrack = context.tracker.trackSymbol; + context.tracker.trackSymbol = ts.noop; + if (isExportAssignment) { + results.push(ts.createExportAssignment( + /*decorators*/ undefined, + /*modifiers*/ undefined, isExportEquals, symbolToExpression(target, context, 67108863 /* All */))); + } + else { + if (first_1 === expr) { + // serialize as `export {target as name}` + serializeExportSpecifier(name, ts.idText(first_1)); + } + else if (ts.isClassExpression(expr)) { + serializeExportSpecifier(name, getInternalSymbolName(target, ts.symbolName(target))); + } + else { + // serialize as `import _Ref = t.arg.et; export { _Ref as name }` + var varName = getUnusedName(name, symbol); + addResult(ts.createImportEqualsDeclaration( + /*decorators*/ undefined, + /*modifiers*/ undefined, ts.createIdentifier(varName), symbolToName(target, context, 67108863 /* All */, /*expectsIdentifier*/ false)), 0 /* None */); + serializeExportSpecifier(name, varName); + } + } + context.tracker.trackSymbol = oldTrack; + } + else { + // serialize as an anonymous property declaration + var varName = getUnusedName(name, symbol); + // We have to use `getWidenedType` here since the object within a json file is unwidened within the file + // (Unwidened types can only exist in expression contexts and should never be serialized) + var typeToSerialize = getWidenedType(getTypeOfSymbol(getMergedSymbol(symbol))); + if (isTypeRepresentableAsFunctionNamespaceMerge(typeToSerialize, symbol)) { + // If there are no index signatures and `typeToSerialize` is an object type, emit as a namespace instead of a const + serializeAsFunctionNamespaceMerge(typeToSerialize, symbol, varName, isExportAssignment ? 0 /* None */ : 1 /* Export */); + } + else { + var statement = ts.createVariableStatement(/*modifiers*/ undefined, ts.createVariableDeclarationList([ + ts.createVariableDeclaration(varName, serializeTypeForDeclaration(context, typeToSerialize, symbol, enclosingDeclaration, includePrivateSymbol, bundled)) + ], 2 /* Const */)); + addResult(statement, name === varName ? 1 /* Export */ : 0 /* None */); + } + if (isExportAssignment) { + results.push(ts.createExportAssignment( + /*decorators*/ undefined, + /*modifiers*/ undefined, isExportEquals, ts.createIdentifier(varName))); + } + else if (name !== varName) { + serializeExportSpecifier(name, varName); + } + } + } + function isTypeRepresentableAsFunctionNamespaceMerge(typeToSerialize, hostSymbol) { + // Only object types which are not constructable, or indexable, whose members all come from the + // context source file, and whose property names are all valid identifiers and not late-bound, _and_ + // whose input is not type annotated (if the input symbol has an annotation we can reuse, we should prefer it) + var ctxSrc = ts.getSourceFileOfNode(context.enclosingDeclaration); + return ts.getObjectFlags(typeToSerialize) & (16 /* Anonymous */ | 32 /* Mapped */) && + !getIndexInfoOfType(typeToSerialize, 0 /* String */) && + !getIndexInfoOfType(typeToSerialize, 1 /* Number */) && + !!(ts.length(getPropertiesOfType(typeToSerialize)) || ts.length(getSignaturesOfType(typeToSerialize, 0 /* Call */))) && + !ts.length(getSignaturesOfType(typeToSerialize, 1 /* Construct */)) && // TODO: could probably serialize as function + ns + class, now that that's OK + !getDeclarationWithTypeAnnotation(hostSymbol, enclosingDeclaration) && + !(typeToSerialize.symbol && ts.some(typeToSerialize.symbol.declarations, function (d) { return ts.getSourceFileOfNode(d) !== ctxSrc; })) && + !ts.some(getPropertiesOfType(typeToSerialize), function (p) { return isLateBoundName(p.escapedName); }) && + !ts.some(getPropertiesOfType(typeToSerialize), function (p) { return ts.some(p.declarations, function (d) { return ts.getSourceFileOfNode(d) !== ctxSrc; }); }) && + ts.every(getPropertiesOfType(typeToSerialize), function (p) { return ts.isIdentifierText(ts.symbolName(p), languageVersion) && !ts.isStringAKeyword(ts.symbolName(p)); }); + } + function makeSerializePropertySymbol(createProperty, methodKind, useAccessors) { + return function serializePropertySymbol(p, isStatic, baseType) { + var modifierFlags = ts.getDeclarationModifierFlagsFromSymbol(p); + var isPrivate = !!(modifierFlags & 8 /* Private */); + if (isStatic && (p.flags & (788968 /* Type */ | 1920 /* Namespace */ | 2097152 /* Alias */))) { + // Only value-only-meaning symbols can be correctly encoded as class statics, type/namespace/alias meaning symbols + // need to be merged namespace members + return []; + } + if (p.flags & 4194304 /* Prototype */ || + (baseType && getPropertyOfType(baseType, p.escapedName) + && isReadonlySymbol(getPropertyOfType(baseType, p.escapedName)) === isReadonlySymbol(p) + && (p.flags & 16777216 /* Optional */) === (getPropertyOfType(baseType, p.escapedName).flags & 16777216 /* Optional */) + && isTypeIdenticalTo(getTypeOfSymbol(p), getTypeOfPropertyOfType(baseType, p.escapedName)))) { + return []; + } + var flag = (modifierFlags & ~256 /* Async */) | (isStatic ? 32 /* Static */ : 0); + var name = getPropertyNameNodeForSymbol(p, context); + var firstPropertyLikeDecl = ts.find(p.declarations, ts.or(ts.isPropertyDeclaration, ts.isAccessor, ts.isVariableDeclaration, ts.isPropertySignature, ts.isBinaryExpression, ts.isPropertyAccessExpression)); + if (p.flags & 98304 /* Accessor */ && useAccessors) { + var result = []; + if (p.flags & 65536 /* SetAccessor */) { + result.push(ts.setTextRange(ts.createSetAccessor( + /*decorators*/ undefined, ts.createModifiersFromModifierFlags(flag), name, [ts.createParameter( + /*decorators*/ undefined, + /*modifiers*/ undefined, + /*dotDotDotToken*/ undefined, "arg", + /*questionToken*/ undefined, isPrivate ? undefined : serializeTypeForDeclaration(context, getTypeOfSymbol(p), p, enclosingDeclaration, includePrivateSymbol, bundled))], + /*body*/ undefined), ts.find(p.declarations, ts.isSetAccessor) || firstPropertyLikeDecl)); + } + if (p.flags & 32768 /* GetAccessor */) { + var isPrivate_1 = modifierFlags & 8 /* Private */; + result.push(ts.setTextRange(ts.createGetAccessor( + /*decorators*/ undefined, ts.createModifiersFromModifierFlags(flag), name, [], isPrivate_1 ? undefined : serializeTypeForDeclaration(context, getTypeOfSymbol(p), p, enclosingDeclaration, includePrivateSymbol, bundled), + /*body*/ undefined), ts.find(p.declarations, ts.isGetAccessor) || firstPropertyLikeDecl)); + } + return result; + } + // This is an else/if as accessors and properties can't merge in TS, but might in JS + // If this happens, we assume the accessor takes priority, as it imposes more constraints + else if (p.flags & (4 /* Property */ | 3 /* Variable */)) { + return ts.setTextRange(createProperty( + /*decorators*/ undefined, ts.createModifiersFromModifierFlags((isReadonlySymbol(p) ? 64 /* Readonly */ : 0) | flag), name, p.flags & 16777216 /* Optional */ ? ts.createToken(57 /* QuestionToken */) : undefined, isPrivate ? undefined : serializeTypeForDeclaration(context, getTypeOfSymbol(p), p, enclosingDeclaration, includePrivateSymbol, bundled), + // TODO: https://github.com/microsoft/TypeScript/pull/32372#discussion_r328386357 + // interface members can't have initializers, however class members _can_ + /*initializer*/ undefined), ts.find(p.declarations, ts.or(ts.isPropertyDeclaration, ts.isVariableDeclaration)) || firstPropertyLikeDecl); + } + if (p.flags & (8192 /* Method */ | 16 /* Function */)) { + var type = getTypeOfSymbol(p); + var signatures = getSignaturesOfType(type, 0 /* Call */); + if (flag & 8 /* Private */) { + return ts.setTextRange(createProperty( + /*decorators*/ undefined, ts.createModifiersFromModifierFlags((isReadonlySymbol(p) ? 64 /* Readonly */ : 0) | flag), name, p.flags & 16777216 /* Optional */ ? ts.createToken(57 /* QuestionToken */) : undefined, + /*type*/ undefined, + /*initializer*/ undefined), ts.find(p.declarations, ts.isFunctionLikeDeclaration) || signatures[0] && signatures[0].declaration || p.declarations[0]); + } + var results_1 = []; + for (var _i = 0, signatures_3 = signatures; _i < signatures_3.length; _i++) { + var sig = signatures_3[_i]; + // Each overload becomes a separate method declaration, in order + var decl = signatureToSignatureDeclarationHelper(sig, methodKind, context); + decl.name = name; // TODO: Clone + if (flag) { + decl.modifiers = ts.createNodeArray(ts.createModifiersFromModifierFlags(flag)); + } + if (p.flags & 16777216 /* Optional */) { + decl.questionToken = ts.createToken(57 /* QuestionToken */); + } + results_1.push(ts.setTextRange(decl, sig.declaration)); + } + return results_1; + } + // The `Constructor`'s symbol isn't in the class's properties lists, obviously, since it's a signature on the static + return ts.Debug.fail("Unhandled class member kind! " + (p.__debugFlags || p.flags)); + }; + } + function serializePropertySymbolForInterface(p, baseType) { + return serializePropertySymbolForInterfaceWorker(p, /*isStatic*/ false, baseType); + } + function serializeSignatures(kind, input, baseType, outputKind) { + var signatures = getSignaturesOfType(input, kind); + if (kind === 1 /* Construct */) { + if (!baseType && ts.every(signatures, function (s) { return ts.length(s.parameters) === 0; })) { + return []; // No base type, every constructor is empty - elide the extraneous `constructor()` + } + if (baseType) { + // If there is a base type, if every signature in the class is identical to a signature in the baseType, elide all the declarations + var baseSigs = getSignaturesOfType(baseType, 1 /* Construct */); + if (!ts.length(baseSigs) && ts.every(signatures, function (s) { return ts.length(s.parameters) === 0; })) { + return []; // Base had no explicit signatures, if all our signatures are also implicit, return an empty list + } + if (baseSigs.length === signatures.length) { + var failed = false; + for (var i = 0; i < baseSigs.length; i++) { + if (!compareSignaturesIdentical(signatures[i], baseSigs[i], /*partialMatch*/ false, /*ignoreThisTypes*/ false, /*ignoreReturnTypes*/ true, compareTypesIdentical)) { + failed = true; + break; + } + } + if (!failed) { + return []; // Every signature was identical - elide constructor list as it is inherited + } + } + } + var privateProtected = 0; + for (var _i = 0, signatures_4 = signatures; _i < signatures_4.length; _i++) { + var s = signatures_4[_i]; + if (s.declaration) { + privateProtected |= ts.getSelectedModifierFlags(s.declaration, 8 /* Private */ | 16 /* Protected */); + } + } + if (privateProtected) { + return [ts.setTextRange(ts.createConstructor( + /*decorators*/ undefined, ts.createModifiersFromModifierFlags(privateProtected), + /*parameters*/ [], + /*body*/ undefined), signatures[0].declaration)]; + } + } + var results = []; + for (var _a = 0, signatures_5 = signatures; _a < signatures_5.length; _a++) { + var sig = signatures_5[_a]; + // Each overload becomes a separate constructor declaration, in order + var decl = signatureToSignatureDeclarationHelper(sig, outputKind, context); + results.push(ts.setTextRange(decl, sig.declaration)); + } + return results; + } + function serializeIndexSignatures(input, baseType) { + var results = []; + for (var _i = 0, _a = [0 /* String */, 1 /* Number */]; _i < _a.length; _i++) { + var type = _a[_i]; + var info = getIndexInfoOfType(input, type); + if (info) { + if (baseType) { + var baseInfo = getIndexInfoOfType(baseType, type); + if (baseInfo) { + if (isTypeIdenticalTo(info.type, baseInfo.type)) { + continue; // elide identical index signatures + } + } + } + results.push(indexInfoToIndexSignatureDeclarationHelper(info, type, context)); + } + } + return results; + } + function serializeBaseType(t, staticType, rootName) { + var ref = trySerializeAsTypeReference(t); + if (ref) { + return ref; + } + var tempName = getUnusedName(rootName + "_base"); + var statement = ts.createVariableStatement(/*modifiers*/ undefined, ts.createVariableDeclarationList([ + ts.createVariableDeclaration(tempName, typeToTypeNodeHelper(staticType, context)) + ], 2 /* Const */)); + addResult(statement, 0 /* None */); + return ts.createExpressionWithTypeArguments(/*typeArgs*/ undefined, ts.createIdentifier(tempName)); + } + function trySerializeAsTypeReference(t) { + var typeArgs; + var reference; + // We don't use `isValueSymbolAccessible` below. since that considers alternative containers (like modules) + // which we can't write out in a syntactically valid way as an expression + if (t.target && getAccessibleSymbolChain(t.target.symbol, enclosingDeclaration, 111551 /* Value */, /*useOnlyExternalAliasing*/ false)) { + typeArgs = ts.map(getTypeArguments(t), function (t) { return typeToTypeNodeHelper(t, context); }); + reference = symbolToExpression(t.target.symbol, context, 788968 /* Type */); + } + else if (t.symbol && getAccessibleSymbolChain(t.symbol, enclosingDeclaration, 111551 /* Value */, /*useOnlyExternalAliasing*/ false)) { + reference = symbolToExpression(t.symbol, context, 788968 /* Type */); + } + if (reference) { + return ts.createExpressionWithTypeArguments(typeArgs, reference); + } + } + function getUnusedName(input, symbol) { + if (symbol) { + if (context.remappedSymbolNames.has("" + getSymbolId(symbol))) { + return context.remappedSymbolNames.get("" + getSymbolId(symbol)); + } + } + if (symbol) { + input = getNameCandidateWorker(symbol, input); + } + var i = 0; + var original = input; + while (context.usedSymbolNames.has(input)) { + i++; + input = original + "_" + i; + } + context.usedSymbolNames.set(input, true); + if (symbol) { + context.remappedSymbolNames.set("" + getSymbolId(symbol), input); + } + return input; + } + function getNameCandidateWorker(symbol, localName) { + if (localName === "default" /* Default */ || localName === "__class" /* Class */ || localName === "__function" /* Function */) { + var flags = context.flags; + context.flags |= 16777216 /* InInitialEntityName */; + var nameCandidate = getNameOfSymbolAsWritten(symbol, context); + context.flags = flags; + localName = nameCandidate.length > 0 && ts.isSingleOrDoubleQuote(nameCandidate.charCodeAt(0)) ? ts.stripQuotes(nameCandidate) : nameCandidate; + } + if (localName === "default" /* Default */) { + localName = "_default"; + } + else if (localName === "export=" /* ExportEquals */) { + localName = "_exports"; + } + localName = ts.isIdentifierText(localName, languageVersion) && !ts.isStringANonContextualKeyword(localName) ? localName : "_" + localName.replace(/[^a-zA-Z0-9]/g, "_"); + return localName; + } + function getInternalSymbolName(symbol, localName) { + if (context.remappedSymbolNames.has("" + getSymbolId(symbol))) { + return context.remappedSymbolNames.get("" + getSymbolId(symbol)); + } + localName = getNameCandidateWorker(symbol, localName); + // The result of this is going to be used as the symbol's name - lock it in, so `getUnusedName` will also pick it up + context.remappedSymbolNames.set("" + getSymbolId(symbol), localName); + return localName; + } + } + } + function typePredicateToString(typePredicate, enclosingDeclaration, flags, writer) { + if (flags === void 0) { flags = 16384 /* UseAliasDefinedOutsideCurrentScope */; } + return writer ? typePredicateToStringWorker(writer).getText() : ts.usingSingleLineStringWriter(typePredicateToStringWorker); + function typePredicateToStringWorker(writer) { + var predicate = ts.createTypePredicateNodeWithModifier(typePredicate.kind === 2 /* AssertsThis */ || typePredicate.kind === 3 /* AssertsIdentifier */ ? ts.createToken(124 /* AssertsKeyword */) : undefined, typePredicate.kind === 1 /* Identifier */ || typePredicate.kind === 3 /* AssertsIdentifier */ ? ts.createIdentifier(typePredicate.parameterName) : ts.createThisTypeNode(), typePredicate.type && nodeBuilder.typeToTypeNode(typePredicate.type, enclosingDeclaration, toNodeBuilderFlags(flags) | 70221824 /* IgnoreErrors */ | 512 /* WriteTypeParametersInQualifiedName */) // TODO: GH#18217 + ); + var printer = ts.createPrinter({ removeComments: true }); + var sourceFile = enclosingDeclaration && ts.getSourceFileOfNode(enclosingDeclaration); + printer.writeNode(4 /* Unspecified */, predicate, /*sourceFile*/ sourceFile, writer); + return writer; + } + } + function formatUnionTypes(types) { + var result = []; + var flags = 0; + for (var i = 0; i < types.length; i++) { + var t = types[i]; + flags |= t.flags; + if (!(t.flags & 98304 /* Nullable */)) { + if (t.flags & (512 /* BooleanLiteral */ | 1024 /* EnumLiteral */)) { + var baseType = t.flags & 512 /* BooleanLiteral */ ? booleanType : getBaseTypeOfEnumLiteralType(t); + if (baseType.flags & 1048576 /* Union */) { + var count = baseType.types.length; + if (i + count <= types.length && getRegularTypeOfLiteralType(types[i + count - 1]) === getRegularTypeOfLiteralType(baseType.types[count - 1])) { + result.push(baseType); + i += count - 1; + continue; + } + } + } + result.push(t); + } + } + if (flags & 65536 /* Null */) + result.push(nullType); + if (flags & 32768 /* Undefined */) + result.push(undefinedType); + return result || types; + } + function visibilityToString(flags) { + if (flags === 8 /* Private */) { + return "private"; + } + if (flags === 16 /* Protected */) { + return "protected"; + } + return "public"; + } + function getTypeAliasForTypeLiteral(type) { + if (type.symbol && type.symbol.flags & 2048 /* TypeLiteral */) { + var node = ts.findAncestor(type.symbol.declarations[0].parent, function (n) { return n.kind !== 182 /* ParenthesizedType */; }); + if (node.kind === 247 /* TypeAliasDeclaration */) { + return getSymbolOfNode(node); + } + } + return undefined; + } + function isTopLevelInExternalModuleAugmentation(node) { + return node && node.parent && + node.parent.kind === 250 /* ModuleBlock */ && + ts.isExternalModuleAugmentation(node.parent.parent); + } + function isDefaultBindingContext(location) { + return location.kind === 290 /* SourceFile */ || ts.isAmbientModule(location); + } + function getNameOfSymbolFromNameType(symbol, context) { + var nameType = getSymbolLinks(symbol).nameType; + if (nameType) { + if (nameType.flags & 384 /* StringOrNumberLiteral */) { + var name = "" + nameType.value; + if (!ts.isIdentifierText(name, compilerOptions.target) && !isNumericLiteralName(name)) { + return "\"" + ts.escapeString(name, 34 /* doubleQuote */) + "\""; + } + if (isNumericLiteralName(name) && ts.startsWith(name, "-")) { + return "[" + name + "]"; + } + return name; + } + if (nameType.flags & 8192 /* UniqueESSymbol */) { + return "[" + getNameOfSymbolAsWritten(nameType.symbol, context) + "]"; + } + } + } + /** + * Gets a human-readable name for a symbol. + * Should *not* be used for the right-hand side of a `.` -- use `symbolName(symbol)` for that instead. + * + * Unlike `symbolName(symbol)`, this will include quotes if the name is from a string literal. + * It will also use a representation of a number as written instead of a decimal form, e.g. `0o11` instead of `9`. + */ + function getNameOfSymbolAsWritten(symbol, context) { + if (context && symbol.escapedName === "default" /* Default */ && !(context.flags & 16384 /* UseAliasDefinedOutsideCurrentScope */) && + // If it's not the first part of an entity name, it must print as `default` + (!(context.flags & 16777216 /* InInitialEntityName */) || + // if the symbol is synthesized, it will only be referenced externally it must print as `default` + !symbol.declarations || + // if not in the same binding context (source file, module declaration), it must print as `default` + (context.enclosingDeclaration && ts.findAncestor(symbol.declarations[0], isDefaultBindingContext) !== ts.findAncestor(context.enclosingDeclaration, isDefaultBindingContext)))) { + return "default"; + } + if (symbol.declarations && symbol.declarations.length) { + var declaration = ts.firstDefined(symbol.declarations, function (d) { return ts.getNameOfDeclaration(d) ? d : undefined; }); // Try using a declaration with a name, first + var name_2 = declaration && ts.getNameOfDeclaration(declaration); + if (declaration && name_2) { + if (ts.isCallExpression(declaration) && ts.isBindableObjectDefinePropertyCall(declaration)) { + return ts.symbolName(symbol); + } + if (ts.isComputedPropertyName(name_2) && !(ts.getCheckFlags(symbol) & 4096 /* Late */)) { + var nameType = getSymbolLinks(symbol).nameType; + if (nameType && nameType.flags & 384 /* StringOrNumberLiteral */) { + // Computed property name isn't late bound, but has a well-known name type - use name type to generate a symbol name + var result = getNameOfSymbolFromNameType(symbol, context); + if (result !== undefined) { + return result; + } + } + } + return ts.declarationNameToString(name_2); + } + if (!declaration) { + declaration = symbol.declarations[0]; // Declaration may be nameless, but we'll try anyway + } + if (declaration.parent && declaration.parent.kind === 242 /* VariableDeclaration */) { + return ts.declarationNameToString(declaration.parent.name); + } + switch (declaration.kind) { + case 214 /* ClassExpression */: + case 201 /* FunctionExpression */: + case 202 /* ArrowFunction */: + if (context && !context.encounteredError && !(context.flags & 131072 /* AllowAnonymousIdentifier */)) { + context.encounteredError = true; + } + return declaration.kind === 214 /* ClassExpression */ ? "(Anonymous class)" : "(Anonymous function)"; + } + } + var name = getNameOfSymbolFromNameType(symbol, context); + return name !== undefined ? name : ts.symbolName(symbol); + } + function isDeclarationVisible(node) { + if (node) { + var links = getNodeLinks(node); + if (links.isVisible === undefined) { + links.isVisible = !!determineIfDeclarationIsVisible(); + } + return links.isVisible; + } + return false; + function determineIfDeclarationIsVisible() { + switch (node.kind) { + case 315 /* JSDocCallbackTag */: + case 322 /* JSDocTypedefTag */: + case 316 /* JSDocEnumTag */: + // Top-level jsdoc type aliases are considered exported + // First parent is comment node, second is hosting declaration or token; we only care about those tokens or declarations whose parent is a source file + return !!(node.parent && node.parent.parent && node.parent.parent.parent && ts.isSourceFile(node.parent.parent.parent)); + case 191 /* BindingElement */: + return isDeclarationVisible(node.parent.parent); + case 242 /* VariableDeclaration */: + if (ts.isBindingPattern(node.name) && + !node.name.elements.length) { + // If the binding pattern is empty, this variable declaration is not visible + return false; + } + // falls through + case 249 /* ModuleDeclaration */: + case 245 /* ClassDeclaration */: + case 246 /* InterfaceDeclaration */: + case 247 /* TypeAliasDeclaration */: + case 244 /* FunctionDeclaration */: + case 248 /* EnumDeclaration */: + case 253 /* ImportEqualsDeclaration */: + // external module augmentation is always visible + if (ts.isExternalModuleAugmentation(node)) { + return true; + } + var parent = getDeclarationContainer(node); + // If the node is not exported or it is not ambient module element (except import declaration) + if (!(ts.getCombinedModifierFlags(node) & 1 /* Export */) && + !(node.kind !== 253 /* ImportEqualsDeclaration */ && parent.kind !== 290 /* SourceFile */ && parent.flags & 8388608 /* Ambient */)) { + return isGlobalSourceFile(parent); + } + // Exported members/ambient module elements (exception import declaration) are visible if parent is visible + return isDeclarationVisible(parent); + case 159 /* PropertyDeclaration */: + case 158 /* PropertySignature */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + case 161 /* MethodDeclaration */: + case 160 /* MethodSignature */: + if (ts.hasModifier(node, 8 /* Private */ | 16 /* Protected */)) { + // Private/protected properties/methods are not visible + return false; + } + // Public properties/methods are visible if its parents are visible, so: + // falls through + case 162 /* Constructor */: + case 166 /* ConstructSignature */: + case 165 /* CallSignature */: + case 167 /* IndexSignature */: + case 156 /* Parameter */: + case 250 /* ModuleBlock */: + case 170 /* FunctionType */: + case 171 /* ConstructorType */: + case 173 /* TypeLiteral */: + case 169 /* TypeReference */: + case 174 /* ArrayType */: + case 175 /* TupleType */: + case 178 /* UnionType */: + case 179 /* IntersectionType */: + case 182 /* ParenthesizedType */: + return isDeclarationVisible(node.parent); + // Default binding, import specifier and namespace import is visible + // only on demand so by default it is not visible + case 255 /* ImportClause */: + case 256 /* NamespaceImport */: + case 258 /* ImportSpecifier */: + return false; + // Type parameters are always visible + case 155 /* TypeParameter */: + // Source file and namespace export are always visible + // falls through + case 290 /* SourceFile */: + case 252 /* NamespaceExportDeclaration */: + return true; + // Export assignments do not create name bindings outside the module + case 259 /* ExportAssignment */: + return false; + default: + return false; + } + } + } + function collectLinkedAliases(node, setVisibility) { + var exportSymbol; + if (node.parent && node.parent.kind === 259 /* ExportAssignment */) { + exportSymbol = resolveName(node, node.escapedText, 111551 /* Value */ | 788968 /* Type */ | 1920 /* Namespace */ | 2097152 /* Alias */, /*nameNotFoundMessage*/ undefined, node, /*isUse*/ false); + } + else if (node.parent.kind === 263 /* ExportSpecifier */) { + exportSymbol = getTargetOfExportSpecifier(node.parent, 111551 /* Value */ | 788968 /* Type */ | 1920 /* Namespace */ | 2097152 /* Alias */); + } + var result; + var visited; + if (exportSymbol) { + visited = ts.createMap(); + visited.set("" + getSymbolId(exportSymbol), true); + buildVisibleNodeList(exportSymbol.declarations); + } + return result; + function buildVisibleNodeList(declarations) { + ts.forEach(declarations, function (declaration) { + var resultNode = getAnyImportSyntax(declaration) || declaration; + if (setVisibility) { + getNodeLinks(declaration).isVisible = true; + } + else { + result = result || []; + ts.pushIfUnique(result, resultNode); + } + if (ts.isInternalModuleImportEqualsDeclaration(declaration)) { + // Add the referenced top container visible + var internalModuleReference = declaration.moduleReference; + var firstIdentifier = ts.getFirstIdentifier(internalModuleReference); + var importSymbol = resolveName(declaration, firstIdentifier.escapedText, 111551 /* Value */ | 788968 /* Type */ | 1920 /* Namespace */, undefined, undefined, /*isUse*/ false); + var id = importSymbol && "" + getSymbolId(importSymbol); + if (importSymbol && !visited.has(id)) { + visited.set(id, true); + buildVisibleNodeList(importSymbol.declarations); + } + } + }); + } + } + /** + * Push an entry on the type resolution stack. If an entry with the given target and the given property name + * is already on the stack, and no entries in between already have a type, then a circularity has occurred. + * In this case, the result values of the existing entry and all entries pushed after it are changed to false, + * and the value false is returned. Otherwise, the new entry is just pushed onto the stack, and true is returned. + * In order to see if the same query has already been done before, the target object and the propertyName both + * must match the one passed in. + * + * @param target The symbol, type, or signature whose type is being queried + * @param propertyName The property name that should be used to query the target for its type + */ + function pushTypeResolution(target, propertyName) { + var resolutionCycleStartIndex = findResolutionCycleStartIndex(target, propertyName); + if (resolutionCycleStartIndex >= 0) { + // A cycle was found + var length_3 = resolutionTargets.length; + for (var i = resolutionCycleStartIndex; i < length_3; i++) { + resolutionResults[i] = false; + } + return false; + } + resolutionTargets.push(target); + resolutionResults.push(/*items*/ true); + resolutionPropertyNames.push(propertyName); + return true; + } + function findResolutionCycleStartIndex(target, propertyName) { + for (var i = resolutionTargets.length - 1; i >= 0; i--) { + if (hasType(resolutionTargets[i], resolutionPropertyNames[i])) { + return -1; + } + if (resolutionTargets[i] === target && resolutionPropertyNames[i] === propertyName) { + return i; + } + } + return -1; + } + function hasType(target, propertyName) { + switch (propertyName) { + case 0 /* Type */: + return !!getSymbolLinks(target).type; + case 5 /* EnumTagType */: + return !!(getNodeLinks(target).resolvedEnumType); + case 2 /* DeclaredType */: + return !!getSymbolLinks(target).declaredType; + case 1 /* ResolvedBaseConstructorType */: + return !!target.resolvedBaseConstructorType; + case 3 /* ResolvedReturnType */: + return !!target.resolvedReturnType; + case 4 /* ImmediateBaseConstraint */: + return !!target.immediateBaseConstraint; + case 6 /* ResolvedTypeArguments */: + return !!target.resolvedTypeArguments; + } + return ts.Debug.assertNever(propertyName); + } + /** + * Pop an entry from the type resolution stack and return its associated result value. The result value will + * be true if no circularities were detected, or false if a circularity was found. + */ + function popTypeResolution() { + resolutionTargets.pop(); + resolutionPropertyNames.pop(); + return resolutionResults.pop(); + } + function getDeclarationContainer(node) { + return ts.findAncestor(ts.getRootDeclaration(node), function (node) { + switch (node.kind) { + case 242 /* VariableDeclaration */: + case 243 /* VariableDeclarationList */: + case 258 /* ImportSpecifier */: + case 257 /* NamedImports */: + case 256 /* NamespaceImport */: + case 255 /* ImportClause */: + return false; + default: + return true; + } + }).parent; + } + function getTypeOfPrototypeProperty(prototype) { + // TypeScript 1.0 spec (April 2014): 8.4 + // Every class automatically contains a static property member named 'prototype', + // the type of which is an instantiation of the class type with type Any supplied as a type argument for each type parameter. + // It is an error to explicitly declare a static property member with the name 'prototype'. + var classType = getDeclaredTypeOfSymbol(getParentOfSymbol(prototype)); + return classType.typeParameters ? createTypeReference(classType, ts.map(classType.typeParameters, function (_) { return anyType; })) : classType; + } + // Return the type of the given property in the given type, or undefined if no such property exists + function getTypeOfPropertyOfType(type, name) { + var prop = getPropertyOfType(type, name); + return prop ? getTypeOfSymbol(prop) : undefined; + } + function getTypeOfPropertyOrIndexSignature(type, name) { + return getTypeOfPropertyOfType(type, name) || isNumericLiteralName(name) && getIndexTypeOfType(type, 1 /* Number */) || getIndexTypeOfType(type, 0 /* String */) || unknownType; + } + function isTypeAny(type) { + return type && (type.flags & 1 /* Any */) !== 0; + } + // Return the type of a binding element parent. We check SymbolLinks first to see if a type has been + // assigned by contextual typing. + function getTypeForBindingElementParent(node) { + var symbol = getSymbolOfNode(node); + return symbol && getSymbolLinks(symbol).type || getTypeForVariableLikeDeclaration(node, /*includeOptionality*/ false); + } + function getRestType(source, properties, symbol) { + source = filterType(source, function (t) { return !(t.flags & 98304 /* Nullable */); }); + if (source.flags & 131072 /* Never */) { + return emptyObjectType; + } + if (source.flags & 1048576 /* Union */) { + return mapType(source, function (t) { return getRestType(t, properties, symbol); }); + } + var omitKeyType = getUnionType(ts.map(properties, getLiteralTypeFromPropertyName)); + if (isGenericObjectType(source) || isGenericIndexType(omitKeyType)) { + if (omitKeyType.flags & 131072 /* Never */) { + return source; + } + var omitTypeAlias = getGlobalOmitSymbol(); + if (!omitTypeAlias) { + return errorType; + } + return getTypeAliasInstantiation(omitTypeAlias, [source, omitKeyType]); + } + var members = ts.createSymbolTable(); + for (var _i = 0, _a = getPropertiesOfType(source); _i < _a.length; _i++) { + var prop = _a[_i]; + if (!isTypeAssignableTo(getLiteralTypeFromProperty(prop, 8576 /* StringOrNumberLiteralOrUnique */), omitKeyType) + && !(ts.getDeclarationModifierFlagsFromSymbol(prop) & (8 /* Private */ | 16 /* Protected */)) + && isSpreadableProperty(prop)) { + members.set(prop.escapedName, getSpreadSymbol(prop, /*readonly*/ false)); + } + } + var stringIndexInfo = getIndexInfoOfType(source, 0 /* String */); + var numberIndexInfo = getIndexInfoOfType(source, 1 /* Number */); + var result = createAnonymousType(symbol, members, ts.emptyArray, ts.emptyArray, stringIndexInfo, numberIndexInfo); + result.objectFlags |= 131072 /* ObjectRestType */; + return result; + } + // Determine the control flow type associated with a destructuring declaration or assignment. The following + // forms of destructuring are possible: + // let { x } = obj; // BindingElement + // let [ x ] = obj; // BindingElement + // { x } = obj; // ShorthandPropertyAssignment + // { x: v } = obj; // PropertyAssignment + // [ x ] = obj; // Expression + // We construct a synthetic element access expression corresponding to 'obj.x' such that the control + // flow analyzer doesn't have to handle all the different syntactic forms. + function getFlowTypeOfDestructuring(node, declaredType) { + var reference = getSyntheticElementAccess(node); + return reference ? getFlowTypeOfReference(reference, declaredType) : declaredType; + } + function getSyntheticElementAccess(node) { + var parentAccess = getParentElementAccess(node); + if (parentAccess && parentAccess.flowNode) { + var propName = getDestructuringPropertyName(node); + if (propName) { + var result = ts.createNode(195 /* ElementAccessExpression */, node.pos, node.end); + result.parent = node; + result.expression = parentAccess; + var literal = ts.createNode(10 /* StringLiteral */, node.pos, node.end); + literal.parent = result; + literal.text = propName; + result.argumentExpression = literal; + result.flowNode = parentAccess.flowNode; + return result; + } + } + } + function getParentElementAccess(node) { + var ancestor = node.parent.parent; + switch (ancestor.kind) { + case 191 /* BindingElement */: + case 281 /* PropertyAssignment */: + return getSyntheticElementAccess(ancestor); + case 192 /* ArrayLiteralExpression */: + return getSyntheticElementAccess(node.parent); + case 242 /* VariableDeclaration */: + return ancestor.initializer; + case 209 /* BinaryExpression */: + return ancestor.right; + } + } + function getDestructuringPropertyName(node) { + var parent = node.parent; + if (node.kind === 191 /* BindingElement */ && parent.kind === 189 /* ObjectBindingPattern */) { + return getLiteralPropertyNameText(node.propertyName || node.name); + } + if (node.kind === 281 /* PropertyAssignment */ || node.kind === 282 /* ShorthandPropertyAssignment */) { + return getLiteralPropertyNameText(node.name); + } + return "" + parent.elements.indexOf(node); + } + function getLiteralPropertyNameText(name) { + var type = getLiteralTypeFromPropertyName(name); + return type.flags & (128 /* StringLiteral */ | 256 /* NumberLiteral */) ? "" + type.value : undefined; + } + /** Return the inferred type for a binding element */ + function getTypeForBindingElement(declaration) { + var pattern = declaration.parent; + var parentType = getTypeForBindingElementParent(pattern.parent); + // If no type or an any type was inferred for parent, infer that for the binding element + if (!parentType || isTypeAny(parentType)) { + return parentType; + } + // Relax null check on ambient destructuring parameters, since the parameters have no implementation and are just documentation + if (strictNullChecks && declaration.flags & 8388608 /* Ambient */ && ts.isParameterDeclaration(declaration)) { + parentType = getNonNullableType(parentType); + } + // Filter `undefined` from the type we check against if the parent has an initializer and that initializer is not possibly `undefined` + else if (strictNullChecks && pattern.parent.initializer && !(getTypeFacts(getTypeOfInitializer(pattern.parent.initializer)) & 65536 /* EQUndefined */)) { + parentType = getTypeWithFacts(parentType, 524288 /* NEUndefined */); + } + var type; + if (pattern.kind === 189 /* ObjectBindingPattern */) { + if (declaration.dotDotDotToken) { + parentType = getReducedType(parentType); + if (parentType.flags & 2 /* Unknown */ || !isValidSpreadType(parentType)) { + error(declaration, ts.Diagnostics.Rest_types_may_only_be_created_from_object_types); + return errorType; + } + var literalMembers = []; + for (var _i = 0, _a = pattern.elements; _i < _a.length; _i++) { + var element = _a[_i]; + if (!element.dotDotDotToken) { + literalMembers.push(element.propertyName || element.name); + } + } + type = getRestType(parentType, literalMembers, declaration.symbol); + } + else { + // Use explicitly specified property name ({ p: xxx } form), or otherwise the implied name ({ p } form) + var name = declaration.propertyName || declaration.name; + var indexType = getLiteralTypeFromPropertyName(name); + var declaredType = getConstraintForLocation(getIndexedAccessType(parentType, indexType, name), declaration.name); + type = getFlowTypeOfDestructuring(declaration, declaredType); + } + } + else { + // This elementType will be used if the specific property corresponding to this index is not + // present (aka the tuple element property). This call also checks that the parentType is in + // fact an iterable or array (depending on target language). + var elementType = checkIteratedTypeOrElementType(65 /* Destructuring */, parentType, undefinedType, pattern); + var index_1 = pattern.elements.indexOf(declaration); + if (declaration.dotDotDotToken) { + // If the parent is a tuple type, the rest element has a tuple type of the + // remaining tuple element types. Otherwise, the rest element has an array type with same + // element type as the parent type. + type = everyType(parentType, isTupleType) ? + mapType(parentType, function (t) { return sliceTupleType(t, index_1); }) : + createArrayType(elementType); + } + else if (isArrayLikeType(parentType)) { + var indexType = getLiteralType(index_1); + var accessFlags = hasDefaultValue(declaration) ? 8 /* NoTupleBoundsCheck */ : 0; + var declaredType = getConstraintForLocation(getIndexedAccessTypeOrUndefined(parentType, indexType, declaration.name, accessFlags) || errorType, declaration.name); + type = getFlowTypeOfDestructuring(declaration, declaredType); + } + else { + type = elementType; + } + } + if (!declaration.initializer) { + return type; + } + if (ts.getEffectiveTypeAnnotationNode(ts.walkUpBindingElementsAndPatterns(declaration))) { + // In strict null checking mode, if a default value of a non-undefined type is specified, remove + // undefined from the final type. + return strictNullChecks && !(getFalsyFlags(checkDeclarationInitializer(declaration)) & 32768 /* Undefined */) ? + getTypeWithFacts(type, 524288 /* NEUndefined */) : + type; + } + return widenTypeInferredFromInitializer(declaration, getUnionType([getTypeWithFacts(type, 524288 /* NEUndefined */), checkDeclarationInitializer(declaration)], 2 /* Subtype */)); + } + function getTypeForDeclarationFromJSDocComment(declaration) { + var jsdocType = ts.getJSDocType(declaration); + if (jsdocType) { + return getTypeFromTypeNode(jsdocType); + } + return undefined; + } + function isNullOrUndefined(node) { + var expr = ts.skipParentheses(node); + return expr.kind === 100 /* NullKeyword */ || expr.kind === 75 /* Identifier */ && getResolvedSymbol(expr) === undefinedSymbol; + } + function isEmptyArrayLiteral(node) { + var expr = ts.skipParentheses(node); + return expr.kind === 192 /* ArrayLiteralExpression */ && expr.elements.length === 0; + } + function addOptionality(type, optional) { + if (optional === void 0) { optional = true; } + return strictNullChecks && optional ? getOptionalType(type) : type; + } + // Return the inferred type for a variable, parameter, or property declaration + function getTypeForVariableLikeDeclaration(declaration, includeOptionality) { + // A variable declared in a for..in statement is of type string, or of type keyof T when the + // right hand expression is of a type parameter type. + if (ts.isVariableDeclaration(declaration) && declaration.parent.parent.kind === 231 /* ForInStatement */) { + var indexType = getIndexType(getNonNullableTypeIfNeeded(checkExpression(declaration.parent.parent.expression))); + return indexType.flags & (262144 /* TypeParameter */ | 4194304 /* Index */) ? getExtractStringType(indexType) : stringType; + } + if (ts.isVariableDeclaration(declaration) && declaration.parent.parent.kind === 232 /* ForOfStatement */) { + // checkRightHandSideOfForOf will return undefined if the for-of expression type was + // missing properties/signatures required to get its iteratedType (like + // [Symbol.iterator] or next). This may be because we accessed properties from anyType, + // or it may have led to an error inside getElementTypeOfIterable. + var forOfStatement = declaration.parent.parent; + return checkRightHandSideOfForOf(forOfStatement) || anyType; + } + if (ts.isBindingPattern(declaration.parent)) { + return getTypeForBindingElement(declaration); + } + var isOptional = includeOptionality && (ts.isParameter(declaration) && isJSDocOptionalParameter(declaration) + || !ts.isBindingElement(declaration) && !ts.isVariableDeclaration(declaration) && !!declaration.questionToken); + // Use type from type annotation if one is present + var declaredType = tryGetTypeFromEffectiveTypeNode(declaration); + if (declaredType) { + return addOptionality(declaredType, isOptional); + } + if ((noImplicitAny || ts.isInJSFile(declaration)) && + declaration.kind === 242 /* VariableDeclaration */ && !ts.isBindingPattern(declaration.name) && + !(ts.getCombinedModifierFlags(declaration) & 1 /* Export */) && !(declaration.flags & 8388608 /* Ambient */)) { + // If --noImplicitAny is on or the declaration is in a Javascript file, + // use control flow tracked 'any' type for non-ambient, non-exported var or let variables with no + // initializer or a 'null' or 'undefined' initializer. + if (!(ts.getCombinedNodeFlags(declaration) & 2 /* Const */) && (!declaration.initializer || isNullOrUndefined(declaration.initializer))) { + return autoType; + } + // Use control flow tracked 'any[]' type for non-ambient, non-exported variables with an empty array + // literal initializer. + if (declaration.initializer && isEmptyArrayLiteral(declaration.initializer)) { + return autoArrayType; + } + } + if (declaration.kind === 156 /* Parameter */) { + var func = declaration.parent; + // For a parameter of a set accessor, use the type of the get accessor if one is present + if (func.kind === 164 /* SetAccessor */ && !hasNonBindableDynamicName(func)) { + var getter = ts.getDeclarationOfKind(getSymbolOfNode(declaration.parent), 163 /* GetAccessor */); + if (getter) { + var getterSignature = getSignatureFromDeclaration(getter); + var thisParameter = getAccessorThisParameter(func); + if (thisParameter && declaration === thisParameter) { + // Use the type from the *getter* + ts.Debug.assert(!thisParameter.type); + return getTypeOfSymbol(getterSignature.thisParameter); + } + return getReturnTypeOfSignature(getterSignature); + } + } + if (ts.isInJSFile(declaration)) { + var typeTag = ts.getJSDocType(func); + if (typeTag && ts.isFunctionTypeNode(typeTag)) { + return getTypeAtPosition(getSignatureFromDeclaration(typeTag), func.parameters.indexOf(declaration)); + } + } + // Use contextual parameter type if one is available + var type = declaration.symbol.escapedName === "this" /* This */ ? getContextualThisParameterType(func) : getContextuallyTypedParameterType(declaration); + if (type) { + return addOptionality(type, isOptional); + } + } + else if (ts.isInJSFile(declaration)) { + var containerObjectType = getJSContainerObjectType(declaration, getSymbolOfNode(declaration), ts.getDeclaredExpandoInitializer(declaration)); + if (containerObjectType) { + return containerObjectType; + } + } + // Use the type of the initializer expression if one is present and the declaration is + // not a parameter of a contextually typed function + if (declaration.initializer) { + var type = widenTypeInferredFromInitializer(declaration, checkDeclarationInitializer(declaration)); + return addOptionality(type, isOptional); + } + if (ts.isJsxAttribute(declaration)) { + // if JSX attribute doesn't have initializer, by default the attribute will have boolean value of true. + // I.e is sugar for + return trueType; + } + // If the declaration specifies a binding pattern and is not a parameter of a contextually + // typed function, use the type implied by the binding pattern + if (ts.isBindingPattern(declaration.name)) { + return getTypeFromBindingPattern(declaration.name, /*includePatternInType*/ false, /*reportErrors*/ true); + } + // No type specified and nothing can be inferred + return undefined; + } + function getWidenedTypeForAssignmentDeclaration(symbol, resolvedSymbol) { + // function/class/{} initializers are themselves containers, so they won't merge in the same way as other initializers + var container = ts.getAssignedExpandoInitializer(symbol.valueDeclaration); + if (container) { + var tag = ts.getJSDocTypeTag(container); + if (tag && tag.typeExpression) { + return getTypeFromTypeNode(tag.typeExpression); + } + var containerObjectType = getJSContainerObjectType(symbol.valueDeclaration, symbol, container); + return containerObjectType || getWidenedLiteralType(checkExpressionCached(container)); + } + var definedInConstructor = false; + var definedInMethod = false; + var jsdocType; + var types; + for (var _i = 0, _a = symbol.declarations; _i < _a.length; _i++) { + var declaration = _a[_i]; + var expression = (ts.isBinaryExpression(declaration) || ts.isCallExpression(declaration)) ? declaration : + ts.isAccessExpression(declaration) ? ts.isBinaryExpression(declaration.parent) ? declaration.parent : declaration : + undefined; + if (!expression) { + continue; // Non-assignment declaration merged in (eg, an Identifier to mark the thing as a namespace) - skip over it and pull type info from elsewhere + } + var kind = ts.isAccessExpression(expression) + ? ts.getAssignmentDeclarationPropertyAccessKind(expression) + : ts.getAssignmentDeclarationKind(expression); + if (kind === 4 /* ThisProperty */) { + if (isDeclarationInConstructor(expression)) { + definedInConstructor = true; + } + else { + definedInMethod = true; + } + } + if (!ts.isCallExpression(expression)) { + jsdocType = getAnnotatedTypeForAssignmentDeclaration(jsdocType, expression, symbol, declaration); + } + if (!jsdocType) { + (types || (types = [])).push((ts.isBinaryExpression(expression) || ts.isCallExpression(expression)) ? getInitializerTypeFromAssignmentDeclaration(symbol, resolvedSymbol, expression, kind) : neverType); + } + } + var type = jsdocType; + if (!type) { + if (!ts.length(types)) { + return errorType; // No types from any declarations :( + } + var constructorTypes = definedInConstructor ? getConstructorDefinedThisAssignmentTypes(types, symbol.declarations) : undefined; + // use only the constructor types unless they were only assigned null | undefined (including widening variants) + if (definedInMethod) { + var propType = getTypeOfAssignmentDeclarationPropertyOfBaseType(symbol); + if (propType) { + (constructorTypes || (constructorTypes = [])).push(propType); + definedInConstructor = true; + } + } + var sourceTypes = ts.some(constructorTypes, function (t) { return !!(t.flags & ~98304 /* Nullable */); }) ? constructorTypes : types; // TODO: GH#18217 + type = getUnionType(sourceTypes, 2 /* Subtype */); + } + var widened = getWidenedType(addOptionality(type, definedInMethod && !definedInConstructor)); + if (filterType(widened, function (t) { return !!(t.flags & ~98304 /* Nullable */); }) === neverType) { + reportImplicitAny(symbol.valueDeclaration, anyType); + return anyType; + } + return widened; + } + function getJSContainerObjectType(decl, symbol, init) { + if (!ts.isInJSFile(decl) || !init || !ts.isObjectLiteralExpression(init) || init.properties.length) { + return undefined; + } + var exports = ts.createSymbolTable(); + while (ts.isBinaryExpression(decl) || ts.isPropertyAccessExpression(decl)) { + var s_2 = getSymbolOfNode(decl); + if (s_2 && ts.hasEntries(s_2.exports)) { + mergeSymbolTable(exports, s_2.exports); + } + decl = ts.isBinaryExpression(decl) ? decl.parent : decl.parent.parent; + } + var s = getSymbolOfNode(decl); + if (s && ts.hasEntries(s.exports)) { + mergeSymbolTable(exports, s.exports); + } + var type = createAnonymousType(symbol, exports, ts.emptyArray, ts.emptyArray, undefined, undefined); + type.objectFlags |= 16384 /* JSLiteral */; + return type; + } + function getAnnotatedTypeForAssignmentDeclaration(declaredType, expression, symbol, declaration) { + var typeNode = ts.getEffectiveTypeAnnotationNode(expression.parent); + if (typeNode) { + var type = getWidenedType(getTypeFromTypeNode(typeNode)); + if (!declaredType) { + return type; + } + else if (declaredType !== errorType && type !== errorType && !isTypeIdenticalTo(declaredType, type)) { + errorNextVariableOrPropertyDeclarationMustHaveSameType(/*firstDeclaration*/ undefined, declaredType, declaration, type); + } + } + if (symbol.parent) { + var typeNode_2 = ts.getEffectiveTypeAnnotationNode(symbol.parent.valueDeclaration); + if (typeNode_2) { + return getTypeOfPropertyOfType(getTypeFromTypeNode(typeNode_2), symbol.escapedName); + } + } + return declaredType; + } + /** If we don't have an explicit JSDoc type, get the type from the initializer. */ + function getInitializerTypeFromAssignmentDeclaration(symbol, resolvedSymbol, expression, kind) { + if (ts.isCallExpression(expression)) { + if (resolvedSymbol) { + return getTypeOfSymbol(resolvedSymbol); // This shouldn't happen except under some hopefully forbidden merges of export assignments and object define assignments + } + var objectLitType = checkExpressionCached(expression.arguments[2]); + var valueType = getTypeOfPropertyOfType(objectLitType, "value"); + if (valueType) { + return valueType; + } + var getFunc = getTypeOfPropertyOfType(objectLitType, "get"); + if (getFunc) { + var getSig = getSingleCallSignature(getFunc); + if (getSig) { + return getReturnTypeOfSignature(getSig); + } + } + var setFunc = getTypeOfPropertyOfType(objectLitType, "set"); + if (setFunc) { + var setSig = getSingleCallSignature(setFunc); + if (setSig) { + return getTypeOfFirstParameterOfSignature(setSig); + } + } + return anyType; + } + if (containsSameNamedThisProperty(expression.left, expression.right)) { + return anyType; + } + var type = resolvedSymbol ? getTypeOfSymbol(resolvedSymbol) : getWidenedLiteralType(checkExpressionCached(expression.right)); + if (type.flags & 524288 /* Object */ && + kind === 2 /* ModuleExports */ && + symbol.escapedName === "export=" /* ExportEquals */) { + var exportedType = resolveStructuredTypeMembers(type); + var members_4 = ts.createSymbolTable(); + ts.copyEntries(exportedType.members, members_4); + if (resolvedSymbol && !resolvedSymbol.exports) { + resolvedSymbol.exports = ts.createSymbolTable(); + } + (resolvedSymbol || symbol).exports.forEach(function (s, name) { + var _a; + var exportedMember = members_4.get(name); + if (exportedMember && exportedMember !== s) { + if (s.flags & 111551 /* Value */) { + // If the member has an additional value-like declaration, union the types from the two declarations, + // but issue an error if they occurred in two different files. The purpose is to support a JS file with + // a pattern like: + // + // module.exports = { a: true }; + // module.exports.a = 3; + // + // but we may have a JS file with `module.exports = { a: true }` along with a TypeScript module augmentation + // declaring an `export const a: number`. In that case, we issue a duplicate identifier error, because + // it's unclear what that's supposed to mean, so it's probably a mistake. + if (ts.getSourceFileOfNode(s.valueDeclaration) !== ts.getSourceFileOfNode(exportedMember.valueDeclaration)) { + var unescapedName = ts.unescapeLeadingUnderscores(s.escapedName); + var exportedMemberName = ((_a = ts.tryCast(exportedMember.valueDeclaration, ts.isNamedDeclaration)) === null || _a === void 0 ? void 0 : _a.name) || exportedMember.valueDeclaration; + ts.addRelatedInfo(error(s.valueDeclaration, ts.Diagnostics.Duplicate_identifier_0, unescapedName), ts.createDiagnosticForNode(exportedMemberName, ts.Diagnostics._0_was_also_declared_here, unescapedName)); + ts.addRelatedInfo(error(exportedMemberName, ts.Diagnostics.Duplicate_identifier_0, unescapedName), ts.createDiagnosticForNode(s.valueDeclaration, ts.Diagnostics._0_was_also_declared_here, unescapedName)); + } + var union = createSymbol(s.flags | exportedMember.flags, name); + union.type = getUnionType([getTypeOfSymbol(s), getTypeOfSymbol(exportedMember)]); + union.valueDeclaration = exportedMember.valueDeclaration; + union.declarations = ts.concatenate(exportedMember.declarations, s.declarations); + members_4.set(name, union); + } + else { + members_4.set(name, mergeSymbol(s, exportedMember)); + } + } + else { + members_4.set(name, s); + } + }); + var result = createAnonymousType(exportedType.symbol, members_4, exportedType.callSignatures, exportedType.constructSignatures, exportedType.stringIndexInfo, exportedType.numberIndexInfo); + result.objectFlags |= (ts.getObjectFlags(type) & 16384 /* JSLiteral */); // Propagate JSLiteral flag + return result; + } + if (isEmptyArrayLiteralType(type)) { + reportImplicitAny(expression, anyArrayType); + return anyArrayType; + } + return type; + } + function containsSameNamedThisProperty(thisProperty, expression) { + return ts.isPropertyAccessExpression(thisProperty) + && thisProperty.expression.kind === 104 /* ThisKeyword */ + && ts.forEachChildRecursively(expression, function (n) { return isMatchingReference(thisProperty, n); }); + } + function isDeclarationInConstructor(expression) { + var thisContainer = ts.getThisContainer(expression, /*includeArrowFunctions*/ false); + // Properties defined in a constructor (or base constructor, or javascript constructor function) don't get undefined added. + // Function expressions that are assigned to the prototype count as methods. + return thisContainer.kind === 162 /* Constructor */ || + thisContainer.kind === 244 /* FunctionDeclaration */ || + (thisContainer.kind === 201 /* FunctionExpression */ && !ts.isPrototypePropertyAssignment(thisContainer.parent)); + } + function getConstructorDefinedThisAssignmentTypes(types, declarations) { + ts.Debug.assert(types.length === declarations.length); + return types.filter(function (_, i) { + var declaration = declarations[i]; + var expression = ts.isBinaryExpression(declaration) ? declaration : + ts.isBinaryExpression(declaration.parent) ? declaration.parent : undefined; + return expression && isDeclarationInConstructor(expression); + }); + } + /** check for definition in base class if any declaration is in a class */ + function getTypeOfAssignmentDeclarationPropertyOfBaseType(property) { + var parentDeclaration = ts.forEach(property.declarations, function (d) { + var parent = ts.getThisContainer(d, /*includeArrowFunctions*/ false).parent; + return ts.isClassLike(parent) && parent; + }); + if (parentDeclaration) { + var classType = getDeclaredTypeOfSymbol(getSymbolOfNode(parentDeclaration)); + var baseClassType = classType && getBaseTypes(classType)[0]; + if (baseClassType) { + return getTypeOfPropertyOfType(baseClassType, property.escapedName); + } + } + } + // Return the type implied by a binding pattern element. This is the type of the initializer of the element if + // one is present. Otherwise, if the element is itself a binding pattern, it is the type implied by the binding + // pattern. Otherwise, it is the type any. + function getTypeFromBindingElement(element, includePatternInType, reportErrors) { + if (element.initializer) { + // The type implied by a binding pattern is independent of context, so we check the initializer with no + // contextual type or, if the element itself is a binding pattern, with the type implied by that binding + // pattern. + var contextualType = ts.isBindingPattern(element.name) ? getTypeFromBindingPattern(element.name, /*includePatternInType*/ true, /*reportErrors*/ false) : unknownType; + return addOptionality(widenTypeInferredFromInitializer(element, checkDeclarationInitializer(element, contextualType))); + } + if (ts.isBindingPattern(element.name)) { + return getTypeFromBindingPattern(element.name, includePatternInType, reportErrors); + } + if (reportErrors && !declarationBelongsToPrivateAmbientMember(element)) { + reportImplicitAny(element, anyType); + } + // When we're including the pattern in the type (an indication we're obtaining a contextual type), we + // use the non-inferrable any type. Inference will never directly infer this type, but it is possible + // to infer a type that contains it, e.g. for a binding pattern like [foo] or { foo }. In such cases, + // widening of the binding pattern type substitutes a regular any for the non-inferrable any. + return includePatternInType ? nonInferrableAnyType : anyType; + } + // Return the type implied by an object binding pattern + function getTypeFromObjectBindingPattern(pattern, includePatternInType, reportErrors) { + var members = ts.createSymbolTable(); + var stringIndexInfo; + var objectFlags = 128 /* ObjectLiteral */ | 1048576 /* ContainsObjectOrArrayLiteral */; + ts.forEach(pattern.elements, function (e) { + var name = e.propertyName || e.name; + if (e.dotDotDotToken) { + stringIndexInfo = createIndexInfo(anyType, /*isReadonly*/ false); + return; + } + var exprType = getLiteralTypeFromPropertyName(name); + if (!isTypeUsableAsPropertyName(exprType)) { + // do not include computed properties in the implied type + objectFlags |= 512 /* ObjectLiteralPatternWithComputedProperties */; + return; + } + var text = getPropertyNameFromType(exprType); + var flags = 4 /* Property */ | (e.initializer ? 16777216 /* Optional */ : 0); + var symbol = createSymbol(flags, text); + symbol.type = getTypeFromBindingElement(e, includePatternInType, reportErrors); + symbol.bindingElement = e; + members.set(symbol.escapedName, symbol); + }); + var result = createAnonymousType(undefined, members, ts.emptyArray, ts.emptyArray, stringIndexInfo, undefined); + result.objectFlags |= objectFlags; + if (includePatternInType) { + result.pattern = pattern; + result.objectFlags |= 1048576 /* ContainsObjectOrArrayLiteral */; + } + return result; + } + // Return the type implied by an array binding pattern + function getTypeFromArrayBindingPattern(pattern, includePatternInType, reportErrors) { + var elements = pattern.elements; + var lastElement = ts.lastOrUndefined(elements); + var hasRestElement = !!(lastElement && lastElement.kind === 191 /* BindingElement */ && lastElement.dotDotDotToken); + if (elements.length === 0 || elements.length === 1 && hasRestElement) { + return languageVersion >= 2 /* ES2015 */ ? createIterableType(anyType) : anyArrayType; + } + var elementTypes = ts.map(elements, function (e) { return ts.isOmittedExpression(e) ? anyType : getTypeFromBindingElement(e, includePatternInType, reportErrors); }); + var minLength = ts.findLastIndex(elements, function (e) { return !ts.isOmittedExpression(e) && !hasDefaultValue(e); }, elements.length - (hasRestElement ? 2 : 1)) + 1; + var result = createTupleType(elementTypes, minLength, hasRestElement); + if (includePatternInType) { + result = cloneTypeReference(result); + result.pattern = pattern; + result.objectFlags |= 1048576 /* ContainsObjectOrArrayLiteral */; + } + return result; + } + // Return the type implied by a binding pattern. This is the type implied purely by the binding pattern itself + // and without regard to its context (i.e. without regard any type annotation or initializer associated with the + // declaration in which the binding pattern is contained). For example, the implied type of [x, y] is [any, any] + // and the implied type of { x, y: z = 1 } is { x: any; y: number; }. The type implied by a binding pattern is + // used as the contextual type of an initializer associated with the binding pattern. Also, for a destructuring + // parameter with no type annotation or initializer, the type implied by the binding pattern becomes the type of + // the parameter. + function getTypeFromBindingPattern(pattern, includePatternInType, reportErrors) { + if (includePatternInType === void 0) { includePatternInType = false; } + if (reportErrors === void 0) { reportErrors = false; } + return pattern.kind === 189 /* ObjectBindingPattern */ + ? getTypeFromObjectBindingPattern(pattern, includePatternInType, reportErrors) + : getTypeFromArrayBindingPattern(pattern, includePatternInType, reportErrors); + } + // Return the type associated with a variable, parameter, or property declaration. In the simple case this is the type + // specified in a type annotation or inferred from an initializer. However, in the case of a destructuring declaration it + // is a bit more involved. For example: + // + // var [x, s = ""] = [1, "one"]; + // + // Here, the array literal [1, "one"] is contextually typed by the type [any, string], which is the implied type of the + // binding pattern [x, s = ""]. Because the contextual type is a tuple type, the resulting type of [1, "one"] is the + // tuple type [number, string]. Thus, the type inferred for 'x' is number and the type inferred for 's' is string. + function getWidenedTypeForVariableLikeDeclaration(declaration, reportErrors) { + return widenTypeForVariableLikeDeclaration(getTypeForVariableLikeDeclaration(declaration, /*includeOptionality*/ true), declaration, reportErrors); + } + function widenTypeForVariableLikeDeclaration(type, declaration, reportErrors) { + if (type) { + if (reportErrors) { + reportErrorsFromWidening(declaration, type); + } + // always widen a 'unique symbol' type if the type was created for a different declaration. + if (type.flags & 8192 /* UniqueESSymbol */ && (ts.isBindingElement(declaration) || !declaration.type) && type.symbol !== getSymbolOfNode(declaration)) { + type = esSymbolType; + } + return getWidenedType(type); + } + // Rest parameters default to type any[], other parameters default to type any + type = ts.isParameter(declaration) && declaration.dotDotDotToken ? anyArrayType : anyType; + // Report implicit any errors unless this is a private property within an ambient declaration + if (reportErrors) { + if (!declarationBelongsToPrivateAmbientMember(declaration)) { + reportImplicitAny(declaration, type); + } + } + return type; + } + function declarationBelongsToPrivateAmbientMember(declaration) { + var root = ts.getRootDeclaration(declaration); + var memberDeclaration = root.kind === 156 /* Parameter */ ? root.parent : root; + return isPrivateWithinAmbient(memberDeclaration); + } + function tryGetTypeFromEffectiveTypeNode(declaration) { + var typeNode = ts.getEffectiveTypeAnnotationNode(declaration); + if (typeNode) { + return getTypeFromTypeNode(typeNode); + } + } + function getTypeOfVariableOrParameterOrProperty(symbol) { + var links = getSymbolLinks(symbol); + if (!links.type) { + var type = getTypeOfVariableOrParameterOrPropertyWorker(symbol); + // For a contextually typed parameter it is possible that a type has already + // been assigned (in assignTypeToParameterAndFixTypeParameters), and we want + // to preserve this type. + if (!links.type) { + links.type = type; + } + } + return links.type; + } + function getTypeOfVariableOrParameterOrPropertyWorker(symbol) { + // Handle prototype property + if (symbol.flags & 4194304 /* Prototype */) { + return getTypeOfPrototypeProperty(symbol); + } + // CommonsJS require and module both have type any. + if (symbol === requireSymbol) { + return anyType; + } + if (symbol.flags & 134217728 /* ModuleExports */) { + var fileSymbol = getSymbolOfNode(ts.getSourceFileOfNode(symbol.valueDeclaration)); + var members = ts.createSymbolTable(); + members.set("exports", fileSymbol); + return createAnonymousType(symbol, members, ts.emptyArray, ts.emptyArray, undefined, undefined); + } + // Handle catch clause variables + var declaration = symbol.valueDeclaration; + if (ts.isCatchClauseVariableDeclarationOrBindingElement(declaration)) { + return anyType; + } + // Handle export default expressions + if (ts.isSourceFile(declaration) && ts.isJsonSourceFile(declaration)) { + if (!declaration.statements.length) { + return emptyObjectType; + } + return getWidenedType(getWidenedLiteralType(checkExpression(declaration.statements[0].expression))); + } + // Handle variable, parameter or property + if (!pushTypeResolution(symbol, 0 /* Type */)) { + // Symbol is property of some kind that is merged with something - should use `getTypeOfFuncClassEnumModule` and not `getTypeOfVariableOrParameterOrProperty` + if (symbol.flags & 512 /* ValueModule */ && !(symbol.flags & 67108864 /* Assignment */)) { + return getTypeOfFuncClassEnumModule(symbol); + } + return reportCircularityError(symbol); + } + var type; + if (declaration.kind === 259 /* ExportAssignment */) { + type = widenTypeForVariableLikeDeclaration(checkExpressionCached(declaration.expression), declaration); + } + else if (ts.isBinaryExpression(declaration) || + (ts.isInJSFile(declaration) && + (ts.isCallExpression(declaration) || (ts.isPropertyAccessExpression(declaration) || ts.isBindableStaticElementAccessExpression(declaration)) && ts.isBinaryExpression(declaration.parent)))) { + type = getWidenedTypeForAssignmentDeclaration(symbol); + } + else if (ts.isJSDocPropertyLikeTag(declaration) + || ts.isPropertyAccessExpression(declaration) + || ts.isElementAccessExpression(declaration) + || ts.isIdentifier(declaration) + || ts.isStringLiteralLike(declaration) + || ts.isNumericLiteral(declaration) + || ts.isClassDeclaration(declaration) + || ts.isFunctionDeclaration(declaration) + || (ts.isMethodDeclaration(declaration) && !ts.isObjectLiteralMethod(declaration)) + || ts.isMethodSignature(declaration) + || ts.isSourceFile(declaration)) { + // Symbol is property of some kind that is merged with something - should use `getTypeOfFuncClassEnumModule` and not `getTypeOfVariableOrParameterOrProperty` + if (symbol.flags & (16 /* Function */ | 8192 /* Method */ | 32 /* Class */ | 384 /* Enum */ | 512 /* ValueModule */)) { + return getTypeOfFuncClassEnumModule(symbol); + } + type = ts.isBinaryExpression(declaration.parent) ? + getWidenedTypeForAssignmentDeclaration(symbol) : + tryGetTypeFromEffectiveTypeNode(declaration) || anyType; + } + else if (ts.isPropertyAssignment(declaration)) { + type = tryGetTypeFromEffectiveTypeNode(declaration) || checkPropertyAssignment(declaration); + } + else if (ts.isJsxAttribute(declaration)) { + type = tryGetTypeFromEffectiveTypeNode(declaration) || checkJsxAttribute(declaration); + } + else if (ts.isShorthandPropertyAssignment(declaration)) { + type = tryGetTypeFromEffectiveTypeNode(declaration) || checkExpressionForMutableLocation(declaration.name, 0 /* Normal */); + } + else if (ts.isObjectLiteralMethod(declaration)) { + type = tryGetTypeFromEffectiveTypeNode(declaration) || checkObjectLiteralMethod(declaration, 0 /* Normal */); + } + else if (ts.isParameter(declaration) + || ts.isPropertyDeclaration(declaration) + || ts.isPropertySignature(declaration) + || ts.isVariableDeclaration(declaration) + || ts.isBindingElement(declaration)) { + type = getWidenedTypeForVariableLikeDeclaration(declaration, /*includeOptionality*/ true); + } + // getTypeOfSymbol dispatches some JS merges incorrectly because their symbol flags are not mutually exclusive. + // Re-dispatch based on valueDeclaration.kind instead. + else if (ts.isEnumDeclaration(declaration)) { + type = getTypeOfFuncClassEnumModule(symbol); + } + else if (ts.isEnumMember(declaration)) { + type = getTypeOfEnumMember(symbol); + } + else if (ts.isAccessor(declaration)) { + type = resolveTypeOfAccessors(symbol); + } + else { + return ts.Debug.fail("Unhandled declaration kind! " + ts.Debug.formatSyntaxKind(declaration.kind) + " for " + ts.Debug.formatSymbol(symbol)); + } + if (!popTypeResolution()) { + // Symbol is property of some kind that is merged with something - should use `getTypeOfFuncClassEnumModule` and not `getTypeOfVariableOrParameterOrProperty` + if (symbol.flags & 512 /* ValueModule */ && !(symbol.flags & 67108864 /* Assignment */)) { + return getTypeOfFuncClassEnumModule(symbol); + } + return reportCircularityError(symbol); + } + return type; + } + function getAnnotatedAccessorTypeNode(accessor) { + if (accessor) { + if (accessor.kind === 163 /* GetAccessor */) { + var getterTypeAnnotation = ts.getEffectiveReturnTypeNode(accessor); + return getterTypeAnnotation; + } + else { + var setterTypeAnnotation = ts.getEffectiveSetAccessorTypeAnnotationNode(accessor); + return setterTypeAnnotation; + } + } + return undefined; + } + function getAnnotatedAccessorType(accessor) { + var node = getAnnotatedAccessorTypeNode(accessor); + return node && getTypeFromTypeNode(node); + } + function getAnnotatedAccessorThisParameter(accessor) { + var parameter = getAccessorThisParameter(accessor); + return parameter && parameter.symbol; + } + function getThisTypeOfDeclaration(declaration) { + return getThisTypeOfSignature(getSignatureFromDeclaration(declaration)); + } + function getTypeOfAccessors(symbol) { + var links = getSymbolLinks(symbol); + return links.type || (links.type = getTypeOfAccessorsWorker(symbol)); + } + function getTypeOfAccessorsWorker(symbol) { + if (!pushTypeResolution(symbol, 0 /* Type */)) { + return errorType; + } + var type = resolveTypeOfAccessors(symbol); + if (!popTypeResolution()) { + type = anyType; + if (noImplicitAny) { + var getter = ts.getDeclarationOfKind(symbol, 163 /* GetAccessor */); + error(getter, ts.Diagnostics._0_implicitly_has_return_type_any_because_it_does_not_have_a_return_type_annotation_and_is_referenced_directly_or_indirectly_in_one_of_its_return_expressions, symbolToString(symbol)); + } + } + return type; + } + function resolveTypeOfAccessors(symbol) { + var getter = ts.getDeclarationOfKind(symbol, 163 /* GetAccessor */); + var setter = ts.getDeclarationOfKind(symbol, 164 /* SetAccessor */); + if (getter && ts.isInJSFile(getter)) { + var jsDocType = getTypeForDeclarationFromJSDocComment(getter); + if (jsDocType) { + return jsDocType; + } + } + // First try to see if the user specified a return type on the get-accessor. + var getterReturnType = getAnnotatedAccessorType(getter); + if (getterReturnType) { + return getterReturnType; + } + else { + // If the user didn't specify a return type, try to use the set-accessor's parameter type. + var setterParameterType = getAnnotatedAccessorType(setter); + if (setterParameterType) { + return setterParameterType; + } + else { + // If there are no specified types, try to infer it from the body of the get accessor if it exists. + if (getter && getter.body) { + return getReturnTypeFromBody(getter); + } + // Otherwise, fall back to 'any'. + else { + if (setter) { + if (!isPrivateWithinAmbient(setter)) { + errorOrSuggestion(noImplicitAny, setter, ts.Diagnostics.Property_0_implicitly_has_type_any_because_its_set_accessor_lacks_a_parameter_type_annotation, symbolToString(symbol)); + } + } + else { + ts.Debug.assert(!!getter, "there must exist a getter as we are current checking either setter or getter in this function"); + if (!isPrivateWithinAmbient(getter)) { + errorOrSuggestion(noImplicitAny, getter, ts.Diagnostics.Property_0_implicitly_has_type_any_because_its_get_accessor_lacks_a_return_type_annotation, symbolToString(symbol)); + } + } + return anyType; + } + } + } + } + function getBaseTypeVariableOfClass(symbol) { + var baseConstructorType = getBaseConstructorTypeOfClass(getDeclaredTypeOfClassOrInterface(symbol)); + return baseConstructorType.flags & 8650752 /* TypeVariable */ ? baseConstructorType : + baseConstructorType.flags & 2097152 /* Intersection */ ? ts.find(baseConstructorType.types, function (t) { return !!(t.flags & 8650752 /* TypeVariable */); }) : + undefined; + } + function getTypeOfFuncClassEnumModule(symbol) { + var links = getSymbolLinks(symbol); + var originalLinks = links; + if (!links.type) { + var jsDeclaration = symbol.valueDeclaration && ts.getDeclarationOfExpando(symbol.valueDeclaration); + if (jsDeclaration) { + var merged = mergeJSSymbols(symbol, getSymbolOfNode(jsDeclaration)); + if (merged) { + // note:we overwrite links because we just cloned the symbol + symbol = links = merged; + } + } + originalLinks.type = links.type = getTypeOfFuncClassEnumModuleWorker(symbol); + } + return links.type; + } + function getTypeOfFuncClassEnumModuleWorker(symbol) { + var declaration = symbol.valueDeclaration; + if (symbol.flags & 1536 /* Module */ && ts.isShorthandAmbientModuleSymbol(symbol)) { + return anyType; + } + else if (declaration && (declaration.kind === 209 /* BinaryExpression */ || + ts.isAccessExpression(declaration) && + declaration.parent.kind === 209 /* BinaryExpression */)) { + return getWidenedTypeForAssignmentDeclaration(symbol); + } + else if (symbol.flags & 512 /* ValueModule */ && declaration && ts.isSourceFile(declaration) && declaration.commonJsModuleIndicator) { + var resolvedModule = resolveExternalModuleSymbol(symbol); + if (resolvedModule !== symbol) { + if (!pushTypeResolution(symbol, 0 /* Type */)) { + return errorType; + } + var exportEquals = getMergedSymbol(symbol.exports.get("export=" /* ExportEquals */)); + var type_1 = getWidenedTypeForAssignmentDeclaration(exportEquals, exportEquals === resolvedModule ? undefined : resolvedModule); + if (!popTypeResolution()) { + return reportCircularityError(symbol); + } + return type_1; + } + } + var type = createObjectType(16 /* Anonymous */, symbol); + if (symbol.flags & 32 /* Class */) { + var baseTypeVariable = getBaseTypeVariableOfClass(symbol); + return baseTypeVariable ? getIntersectionType([type, baseTypeVariable]) : type; + } + else { + return strictNullChecks && symbol.flags & 16777216 /* Optional */ ? getOptionalType(type) : type; + } + } + function getTypeOfEnumMember(symbol) { + var links = getSymbolLinks(symbol); + return links.type || (links.type = getDeclaredTypeOfEnumMember(symbol)); + } + function getTypeOfAlias(symbol) { + var links = getSymbolLinks(symbol); + if (!links.type) { + var targetSymbol = resolveAlias(symbol); + // It only makes sense to get the type of a value symbol. If the result of resolving + // the alias is not a value, then it has no type. To get the type associated with a + // type symbol, call getDeclaredTypeOfSymbol. + // This check is important because without it, a call to getTypeOfSymbol could end + // up recursively calling getTypeOfAlias, causing a stack overflow. + links.type = targetSymbol.flags & 111551 /* Value */ + ? getTypeOfSymbol(targetSymbol) + : errorType; + } + return links.type; + } + function getTypeOfInstantiatedSymbol(symbol) { + var links = getSymbolLinks(symbol); + if (!links.type) { + if (!pushTypeResolution(symbol, 0 /* Type */)) { + return links.type = errorType; + } + var type = instantiateType(getTypeOfSymbol(links.target), links.mapper); + if (!popTypeResolution()) { + type = reportCircularityError(symbol); + } + links.type = type; + } + return links.type; + } + function reportCircularityError(symbol) { + var declaration = symbol.valueDeclaration; + // Check if variable has type annotation that circularly references the variable itself + if (ts.getEffectiveTypeAnnotationNode(declaration)) { + error(symbol.valueDeclaration, ts.Diagnostics._0_is_referenced_directly_or_indirectly_in_its_own_type_annotation, symbolToString(symbol)); + return errorType; + } + // Check if variable has initializer that circularly references the variable itself + if (noImplicitAny && (declaration.kind !== 156 /* Parameter */ || declaration.initializer)) { + error(symbol.valueDeclaration, ts.Diagnostics._0_implicitly_has_type_any_because_it_does_not_have_a_type_annotation_and_is_referenced_directly_or_indirectly_in_its_own_initializer, symbolToString(symbol)); + } + // Circularities could also result from parameters in function expressions that end up + // having themselves as contextual types following type argument inference. In those cases + // we have already reported an implicit any error so we don't report anything here. + return anyType; + } + function getTypeOfSymbolWithDeferredType(symbol) { + var links = getSymbolLinks(symbol); + if (!links.type) { + ts.Debug.assertIsDefined(links.deferralParent); + ts.Debug.assertIsDefined(links.deferralConstituents); + links.type = links.deferralParent.flags & 1048576 /* Union */ ? getUnionType(links.deferralConstituents) : getIntersectionType(links.deferralConstituents); + } + return links.type; + } + function getTypeOfSymbol(symbol) { + var checkFlags = ts.getCheckFlags(symbol); + if (checkFlags & 65536 /* DeferredType */) { + return getTypeOfSymbolWithDeferredType(symbol); + } + if (checkFlags & 1 /* Instantiated */) { + return getTypeOfInstantiatedSymbol(symbol); + } + if (checkFlags & 262144 /* Mapped */) { + return getTypeOfMappedSymbol(symbol); + } + if (checkFlags & 8192 /* ReverseMapped */) { + return getTypeOfReverseMappedSymbol(symbol); + } + if (symbol.flags & (3 /* Variable */ | 4 /* Property */)) { + return getTypeOfVariableOrParameterOrProperty(symbol); + } + if (symbol.flags & (16 /* Function */ | 8192 /* Method */ | 32 /* Class */ | 384 /* Enum */ | 512 /* ValueModule */)) { + return getTypeOfFuncClassEnumModule(symbol); + } + if (symbol.flags & 8 /* EnumMember */) { + return getTypeOfEnumMember(symbol); + } + if (symbol.flags & 98304 /* Accessor */) { + return getTypeOfAccessors(symbol); + } + if (symbol.flags & 2097152 /* Alias */) { + return getTypeOfAlias(symbol); + } + return errorType; + } + function isReferenceToType(type, target) { + return type !== undefined + && target !== undefined + && (ts.getObjectFlags(type) & 4 /* Reference */) !== 0 + && type.target === target; + } + function getTargetType(type) { + return ts.getObjectFlags(type) & 4 /* Reference */ ? type.target : type; + } + // TODO: GH#18217 If `checkBase` is undefined, we should not call this because this will always return false. + function hasBaseType(type, checkBase) { + return check(type); + function check(type) { + if (ts.getObjectFlags(type) & (3 /* ClassOrInterface */ | 4 /* Reference */)) { + var target = getTargetType(type); + return target === checkBase || ts.some(getBaseTypes(target), check); + } + else if (type.flags & 2097152 /* Intersection */) { + return ts.some(type.types, check); + } + return false; + } + } + // Appends the type parameters given by a list of declarations to a set of type parameters and returns the resulting set. + // The function allocates a new array if the input type parameter set is undefined, but otherwise it modifies the set + // in-place and returns the same array. + function appendTypeParameters(typeParameters, declarations) { + for (var _i = 0, declarations_2 = declarations; _i < declarations_2.length; _i++) { + var declaration = declarations_2[_i]; + typeParameters = ts.appendIfUnique(typeParameters, getDeclaredTypeOfTypeParameter(getSymbolOfNode(declaration))); + } + return typeParameters; + } + // Return the outer type parameters of a node or undefined if the node has no outer type parameters. + function getOuterTypeParameters(node, includeThisTypes) { + while (true) { + node = node.parent; // TODO: GH#18217 Use SourceFile kind check instead + if (node && ts.isBinaryExpression(node)) { + // prototype assignments get the outer type parameters of their constructor function + var assignmentKind = ts.getAssignmentDeclarationKind(node); + if (assignmentKind === 6 /* Prototype */ || assignmentKind === 3 /* PrototypeProperty */) { + var symbol = getSymbolOfNode(node.left); + if (symbol && symbol.parent && !ts.findAncestor(symbol.parent.valueDeclaration, function (d) { return node === d; })) { + node = symbol.parent.valueDeclaration; + } + } + } + if (!node) { + return undefined; + } + switch (node.kind) { + case 225 /* VariableStatement */: + case 245 /* ClassDeclaration */: + case 214 /* ClassExpression */: + case 246 /* InterfaceDeclaration */: + case 165 /* CallSignature */: + case 166 /* ConstructSignature */: + case 160 /* MethodSignature */: + case 170 /* FunctionType */: + case 171 /* ConstructorType */: + case 300 /* JSDocFunctionType */: + case 244 /* FunctionDeclaration */: + case 161 /* MethodDeclaration */: + case 201 /* FunctionExpression */: + case 202 /* ArrowFunction */: + case 247 /* TypeAliasDeclaration */: + case 321 /* JSDocTemplateTag */: + case 322 /* JSDocTypedefTag */: + case 316 /* JSDocEnumTag */: + case 315 /* JSDocCallbackTag */: + case 186 /* MappedType */: + case 180 /* ConditionalType */: + var outerTypeParameters = getOuterTypeParameters(node, includeThisTypes); + if (node.kind === 186 /* MappedType */) { + return ts.append(outerTypeParameters, getDeclaredTypeOfTypeParameter(getSymbolOfNode(node.typeParameter))); + } + else if (node.kind === 180 /* ConditionalType */) { + return ts.concatenate(outerTypeParameters, getInferTypeParameters(node)); + } + else if (node.kind === 225 /* VariableStatement */ && !ts.isInJSFile(node)) { + break; + } + var outerAndOwnTypeParameters = appendTypeParameters(outerTypeParameters, ts.getEffectiveTypeParameterDeclarations(node)); + var thisType = includeThisTypes && + (node.kind === 245 /* ClassDeclaration */ || node.kind === 214 /* ClassExpression */ || node.kind === 246 /* InterfaceDeclaration */ || isJSConstructor(node)) && + getDeclaredTypeOfClassOrInterface(getSymbolOfNode(node)).thisType; + return thisType ? ts.append(outerAndOwnTypeParameters, thisType) : outerAndOwnTypeParameters; + } + } + } + // The outer type parameters are those defined by enclosing generic classes, methods, or functions. + function getOuterTypeParametersOfClassOrInterface(symbol) { + var declaration = symbol.flags & 32 /* Class */ ? symbol.valueDeclaration : ts.getDeclarationOfKind(symbol, 246 /* InterfaceDeclaration */); + ts.Debug.assert(!!declaration, "Class was missing valueDeclaration -OR- non-class had no interface declarations"); + return getOuterTypeParameters(declaration); + } + // The local type parameters are the combined set of type parameters from all declarations of the class, + // interface, or type alias. + function getLocalTypeParametersOfClassOrInterfaceOrTypeAlias(symbol) { + var result; + for (var _i = 0, _a = symbol.declarations; _i < _a.length; _i++) { + var node = _a[_i]; + if (node.kind === 246 /* InterfaceDeclaration */ || + node.kind === 245 /* ClassDeclaration */ || + node.kind === 214 /* ClassExpression */ || + isJSConstructor(node) || + ts.isTypeAlias(node)) { + var declaration = node; + result = appendTypeParameters(result, ts.getEffectiveTypeParameterDeclarations(declaration)); + } + } + return result; + } + // The full set of type parameters for a generic class or interface type consists of its outer type parameters plus + // its locally declared type parameters. + function getTypeParametersOfClassOrInterface(symbol) { + return ts.concatenate(getOuterTypeParametersOfClassOrInterface(symbol), getLocalTypeParametersOfClassOrInterfaceOrTypeAlias(symbol)); + } + // A type is a mixin constructor if it has a single construct signature taking no type parameters and a single + // rest parameter of type any[]. + function isMixinConstructorType(type) { + var signatures = getSignaturesOfType(type, 1 /* Construct */); + if (signatures.length === 1) { + var s = signatures[0]; + return !s.typeParameters && s.parameters.length === 1 && signatureHasRestParameter(s) && getElementTypeOfArrayType(getTypeOfParameter(s.parameters[0])) === anyType; + } + return false; + } + function isConstructorType(type) { + if (getSignaturesOfType(type, 1 /* Construct */).length > 0) { + return true; + } + if (type.flags & 8650752 /* TypeVariable */) { + var constraint = getBaseConstraintOfType(type); + return !!constraint && isMixinConstructorType(constraint); + } + return false; + } + function getBaseTypeNodeOfClass(type) { + return ts.getEffectiveBaseTypeNode(type.symbol.valueDeclaration); + } + function getConstructorsForTypeArguments(type, typeArgumentNodes, location) { + var typeArgCount = ts.length(typeArgumentNodes); + var isJavascript = ts.isInJSFile(location); + return ts.filter(getSignaturesOfType(type, 1 /* Construct */), function (sig) { return (isJavascript || typeArgCount >= getMinTypeArgumentCount(sig.typeParameters)) && typeArgCount <= ts.length(sig.typeParameters); }); + } + function getInstantiatedConstructorsForTypeArguments(type, typeArgumentNodes, location) { + var signatures = getConstructorsForTypeArguments(type, typeArgumentNodes, location); + var typeArguments = ts.map(typeArgumentNodes, getTypeFromTypeNode); + return ts.sameMap(signatures, function (sig) { return ts.some(sig.typeParameters) ? getSignatureInstantiation(sig, typeArguments, ts.isInJSFile(location)) : sig; }); + } + /** + * The base constructor of a class can resolve to + * * undefinedType if the class has no extends clause, + * * unknownType if an error occurred during resolution of the extends expression, + * * nullType if the extends expression is the null value, + * * anyType if the extends expression has type any, or + * * an object type with at least one construct signature. + */ + function getBaseConstructorTypeOfClass(type) { + if (!type.resolvedBaseConstructorType) { + var decl = type.symbol.valueDeclaration; + var extended = ts.getEffectiveBaseTypeNode(decl); + var baseTypeNode = getBaseTypeNodeOfClass(type); + if (!baseTypeNode) { + return type.resolvedBaseConstructorType = undefinedType; + } + if (!pushTypeResolution(type, 1 /* ResolvedBaseConstructorType */)) { + return errorType; + } + var baseConstructorType = checkExpression(baseTypeNode.expression); + if (extended && baseTypeNode !== extended) { + ts.Debug.assert(!extended.typeArguments); // Because this is in a JS file, and baseTypeNode is in an @extends tag + checkExpression(extended.expression); + } + if (baseConstructorType.flags & (524288 /* Object */ | 2097152 /* Intersection */)) { + // Resolving the members of a class requires us to resolve the base class of that class. + // We force resolution here such that we catch circularities now. + resolveStructuredTypeMembers(baseConstructorType); + } + if (!popTypeResolution()) { + error(type.symbol.valueDeclaration, ts.Diagnostics._0_is_referenced_directly_or_indirectly_in_its_own_base_expression, symbolToString(type.symbol)); + return type.resolvedBaseConstructorType = errorType; + } + if (!(baseConstructorType.flags & 1 /* Any */) && baseConstructorType !== nullWideningType && !isConstructorType(baseConstructorType)) { + var err = error(baseTypeNode.expression, ts.Diagnostics.Type_0_is_not_a_constructor_function_type, typeToString(baseConstructorType)); + if (baseConstructorType.flags & 262144 /* TypeParameter */) { + var constraint = getConstraintFromTypeParameter(baseConstructorType); + var ctorReturn = unknownType; + if (constraint) { + var ctorSig = getSignaturesOfType(constraint, 1 /* Construct */); + if (ctorSig[0]) { + ctorReturn = getReturnTypeOfSignature(ctorSig[0]); + } + } + ts.addRelatedInfo(err, ts.createDiagnosticForNode(baseConstructorType.symbol.declarations[0], ts.Diagnostics.Did_you_mean_for_0_to_be_constrained_to_type_new_args_Colon_any_1, symbolToString(baseConstructorType.symbol), typeToString(ctorReturn))); + } + return type.resolvedBaseConstructorType = errorType; + } + type.resolvedBaseConstructorType = baseConstructorType; + } + return type.resolvedBaseConstructorType; + } + function getImplementsTypes(type) { + var resolvedImplementsTypes = ts.emptyArray; + for (var _i = 0, _a = type.symbol.declarations; _i < _a.length; _i++) { + var declaration = _a[_i]; + var implementsTypeNodes = ts.getEffectiveImplementsTypeNodes(declaration); + if (!implementsTypeNodes) + continue; + for (var _b = 0, implementsTypeNodes_1 = implementsTypeNodes; _b < implementsTypeNodes_1.length; _b++) { + var node = implementsTypeNodes_1[_b]; + var implementsType = getTypeFromTypeNode(node); + if (implementsType !== errorType) { + if (resolvedImplementsTypes === ts.emptyArray) { + resolvedImplementsTypes = [implementsType]; + } + else { + resolvedImplementsTypes.push(implementsType); + } + } + } + } + return resolvedImplementsTypes; + } + function getBaseTypes(type) { + if (!type.resolvedBaseTypes) { + if (type.objectFlags & 8 /* Tuple */) { + type.resolvedBaseTypes = [createArrayType(getUnionType(type.typeParameters || ts.emptyArray), type.readonly)]; + } + else if (type.symbol.flags & (32 /* Class */ | 64 /* Interface */)) { + if (type.symbol.flags & 32 /* Class */) { + resolveBaseTypesOfClass(type); + } + if (type.symbol.flags & 64 /* Interface */) { + resolveBaseTypesOfInterface(type); + } + } + else { + ts.Debug.fail("type must be class or interface"); + } + } + return type.resolvedBaseTypes; + } + function resolveBaseTypesOfClass(type) { + type.resolvedBaseTypes = ts.resolvingEmptyArray; + var baseConstructorType = getApparentType(getBaseConstructorTypeOfClass(type)); + if (!(baseConstructorType.flags & (524288 /* Object */ | 2097152 /* Intersection */ | 1 /* Any */))) { + return type.resolvedBaseTypes = ts.emptyArray; + } + var baseTypeNode = getBaseTypeNodeOfClass(type); + var baseType; + var originalBaseType = baseConstructorType.symbol ? getDeclaredTypeOfSymbol(baseConstructorType.symbol) : undefined; + if (baseConstructorType.symbol && baseConstructorType.symbol.flags & 32 /* Class */ && + areAllOuterTypeParametersApplied(originalBaseType)) { + // When base constructor type is a class with no captured type arguments we know that the constructors all have the same type parameters as the + // class and all return the instance type of the class. There is no need for further checks and we can apply the + // type arguments in the same manner as a type reference to get the same error reporting experience. + baseType = getTypeFromClassOrInterfaceReference(baseTypeNode, baseConstructorType.symbol); + } + else if (baseConstructorType.flags & 1 /* Any */) { + baseType = baseConstructorType; + } + else { + // The class derives from a "class-like" constructor function, check that we have at least one construct signature + // with a matching number of type parameters and use the return type of the first instantiated signature. Elsewhere + // we check that all instantiated signatures return the same type. + var constructors = getInstantiatedConstructorsForTypeArguments(baseConstructorType, baseTypeNode.typeArguments, baseTypeNode); + if (!constructors.length) { + error(baseTypeNode.expression, ts.Diagnostics.No_base_constructor_has_the_specified_number_of_type_arguments); + return type.resolvedBaseTypes = ts.emptyArray; + } + baseType = getReturnTypeOfSignature(constructors[0]); + } + if (baseType === errorType) { + return type.resolvedBaseTypes = ts.emptyArray; + } + var reducedBaseType = getReducedType(baseType); + if (!isValidBaseType(reducedBaseType)) { + var elaboration = elaborateNeverIntersection(/*errorInfo*/ undefined, baseType); + var diagnostic = ts.chainDiagnosticMessages(elaboration, ts.Diagnostics.Base_constructor_return_type_0_is_not_an_object_type_or_intersection_of_object_types_with_statically_known_members, typeToString(reducedBaseType)); + diagnostics.add(ts.createDiagnosticForNodeFromMessageChain(baseTypeNode.expression, diagnostic)); + return type.resolvedBaseTypes = ts.emptyArray; + } + if (type === reducedBaseType || hasBaseType(reducedBaseType, type)) { + error(type.symbol.valueDeclaration, ts.Diagnostics.Type_0_recursively_references_itself_as_a_base_type, typeToString(type, /*enclosingDeclaration*/ undefined, 2 /* WriteArrayAsGenericType */)); + return type.resolvedBaseTypes = ts.emptyArray; + } + if (type.resolvedBaseTypes === ts.resolvingEmptyArray) { + // Circular reference, likely through instantiation of default parameters + // (otherwise there'd be an error from hasBaseType) - this is fine, but `.members` should be reset + // as `getIndexedAccessType` via `instantiateType` via `getTypeFromClassOrInterfaceReference` forces a + // partial instantiation of the members without the base types fully resolved + type.members = undefined; + } + return type.resolvedBaseTypes = [reducedBaseType]; + } + function areAllOuterTypeParametersApplied(type) { + // An unapplied type parameter has its symbol still the same as the matching argument symbol. + // Since parameters are applied outer-to-inner, only the last outer parameter needs to be checked. + var outerTypeParameters = type.outerTypeParameters; + if (outerTypeParameters) { + var last_1 = outerTypeParameters.length - 1; + var typeArguments = getTypeArguments(type); + return outerTypeParameters[last_1].symbol !== typeArguments[last_1].symbol; + } + return true; + } + // A valid base type is `any`, an object type or intersection of object types. + function isValidBaseType(type) { + if (type.flags & 262144 /* TypeParameter */) { + var constraint = getBaseConstraintOfType(type); + if (constraint) { + return isValidBaseType(constraint); + } + } + // TODO: Given that we allow type parmeters here now, is this `!isGenericMappedType(type)` check really needed? + // There's no reason a `T` should be allowed while a `Readonly` should not. + return !!(type.flags & (524288 /* Object */ | 67108864 /* NonPrimitive */ | 1 /* Any */) && !isGenericMappedType(type) || + type.flags & 2097152 /* Intersection */ && ts.every(type.types, isValidBaseType)); + } + function resolveBaseTypesOfInterface(type) { + type.resolvedBaseTypes = type.resolvedBaseTypes || ts.emptyArray; + for (var _i = 0, _a = type.symbol.declarations; _i < _a.length; _i++) { + var declaration = _a[_i]; + if (declaration.kind === 246 /* InterfaceDeclaration */ && ts.getInterfaceBaseTypeNodes(declaration)) { + for (var _b = 0, _c = ts.getInterfaceBaseTypeNodes(declaration); _b < _c.length; _b++) { + var node = _c[_b]; + var baseType = getReducedType(getTypeFromTypeNode(node)); + if (baseType !== errorType) { + if (isValidBaseType(baseType)) { + if (type !== baseType && !hasBaseType(baseType, type)) { + if (type.resolvedBaseTypes === ts.emptyArray) { + type.resolvedBaseTypes = [baseType]; + } + else { + type.resolvedBaseTypes.push(baseType); + } + } + else { + error(declaration, ts.Diagnostics.Type_0_recursively_references_itself_as_a_base_type, typeToString(type, /*enclosingDeclaration*/ undefined, 2 /* WriteArrayAsGenericType */)); + } + } + else { + error(node, ts.Diagnostics.An_interface_can_only_extend_an_object_type_or_intersection_of_object_types_with_statically_known_members); + } + } + } + } + } + } + /** + * Returns true if the interface given by the symbol is free of "this" references. + * + * Specifically, the result is true if the interface itself contains no references + * to "this" in its body, if all base types are interfaces, + * and if none of the base interfaces have a "this" type. + */ + function isThislessInterface(symbol) { + for (var _i = 0, _a = symbol.declarations; _i < _a.length; _i++) { + var declaration = _a[_i]; + if (declaration.kind === 246 /* InterfaceDeclaration */) { + if (declaration.flags & 128 /* ContainsThis */) { + return false; + } + var baseTypeNodes = ts.getInterfaceBaseTypeNodes(declaration); + if (baseTypeNodes) { + for (var _b = 0, baseTypeNodes_1 = baseTypeNodes; _b < baseTypeNodes_1.length; _b++) { + var node = baseTypeNodes_1[_b]; + if (ts.isEntityNameExpression(node.expression)) { + var baseSymbol = resolveEntityName(node.expression, 788968 /* Type */, /*ignoreErrors*/ true); + if (!baseSymbol || !(baseSymbol.flags & 64 /* Interface */) || getDeclaredTypeOfClassOrInterface(baseSymbol).thisType) { + return false; + } + } + } + } + } + } + return true; + } + function getDeclaredTypeOfClassOrInterface(symbol) { + var links = getSymbolLinks(symbol); + var originalLinks = links; + if (!links.declaredType) { + var kind = symbol.flags & 32 /* Class */ ? 1 /* Class */ : 2 /* Interface */; + var merged = mergeJSSymbols(symbol, getAssignedClassSymbol(symbol.valueDeclaration)); + if (merged) { + // note:we overwrite links because we just cloned the symbol + symbol = links = merged; + } + var type = originalLinks.declaredType = links.declaredType = createObjectType(kind, symbol); + var outerTypeParameters = getOuterTypeParametersOfClassOrInterface(symbol); + var localTypeParameters = getLocalTypeParametersOfClassOrInterfaceOrTypeAlias(symbol); + // A class or interface is generic if it has type parameters or a "this" type. We always give classes a "this" type + // because it is not feasible to analyze all members to determine if the "this" type escapes the class (in particular, + // property types inferred from initializers and method return types inferred from return statements are very hard + // to exhaustively analyze). We give interfaces a "this" type if we can't definitely determine that they are free of + // "this" references. + if (outerTypeParameters || localTypeParameters || kind === 1 /* Class */ || !isThislessInterface(symbol)) { + type.objectFlags |= 4 /* Reference */; + type.typeParameters = ts.concatenate(outerTypeParameters, localTypeParameters); + type.outerTypeParameters = outerTypeParameters; + type.localTypeParameters = localTypeParameters; + type.instantiations = ts.createMap(); + type.instantiations.set(getTypeListId(type.typeParameters), type); + type.target = type; + type.resolvedTypeArguments = type.typeParameters; + type.thisType = createTypeParameter(symbol); + type.thisType.isThisType = true; + type.thisType.constraint = type; + } + } + return links.declaredType; + } + function getDeclaredTypeOfTypeAlias(symbol) { + var links = getSymbolLinks(symbol); + if (!links.declaredType) { + // Note that we use the links object as the target here because the symbol object is used as the unique + // identity for resolution of the 'type' property in SymbolLinks. + if (!pushTypeResolution(symbol, 2 /* DeclaredType */)) { + return errorType; + } + var declaration = ts.Debug.checkDefined(ts.find(symbol.declarations, ts.isTypeAlias), "Type alias symbol with no valid declaration found"); + var typeNode = ts.isJSDocTypeAlias(declaration) ? declaration.typeExpression : declaration.type; + // If typeNode is missing, we will error in checkJSDocTypedefTag. + var type = typeNode ? getTypeFromTypeNode(typeNode) : errorType; + if (popTypeResolution()) { + var typeParameters = getLocalTypeParametersOfClassOrInterfaceOrTypeAlias(symbol); + if (typeParameters) { + // Initialize the instantiation cache for generic type aliases. The declared type corresponds to + // an instantiation of the type alias with the type parameters supplied as type arguments. + links.typeParameters = typeParameters; + links.instantiations = ts.createMap(); + links.instantiations.set(getTypeListId(typeParameters), type); + } + } + else { + type = errorType; + error(ts.isNamedDeclaration(declaration) ? declaration.name : declaration || declaration, ts.Diagnostics.Type_alias_0_circularly_references_itself, symbolToString(symbol)); + } + links.declaredType = type; + } + return links.declaredType; + } + function isStringConcatExpression(expr) { + if (ts.isStringLiteralLike(expr)) { + return true; + } + else if (expr.kind === 209 /* BinaryExpression */) { + return isStringConcatExpression(expr.left) && isStringConcatExpression(expr.right); + } + return false; + } + function isLiteralEnumMember(member) { + var expr = member.initializer; + if (!expr) { + return !(member.flags & 8388608 /* Ambient */); + } + switch (expr.kind) { + case 10 /* StringLiteral */: + case 8 /* NumericLiteral */: + case 14 /* NoSubstitutionTemplateLiteral */: + return true; + case 207 /* PrefixUnaryExpression */: + return expr.operator === 40 /* MinusToken */ && + expr.operand.kind === 8 /* NumericLiteral */; + case 75 /* Identifier */: + return ts.nodeIsMissing(expr) || !!getSymbolOfNode(member.parent).exports.get(expr.escapedText); + case 209 /* BinaryExpression */: + return isStringConcatExpression(expr); + default: + return false; + } + } + function getEnumKind(symbol) { + var links = getSymbolLinks(symbol); + if (links.enumKind !== undefined) { + return links.enumKind; + } + var hasNonLiteralMember = false; + for (var _i = 0, _a = symbol.declarations; _i < _a.length; _i++) { + var declaration = _a[_i]; + if (declaration.kind === 248 /* EnumDeclaration */) { + for (var _b = 0, _c = declaration.members; _b < _c.length; _b++) { + var member = _c[_b]; + if (member.initializer && ts.isStringLiteralLike(member.initializer)) { + return links.enumKind = 1 /* Literal */; + } + if (!isLiteralEnumMember(member)) { + hasNonLiteralMember = true; + } + } + } + } + return links.enumKind = hasNonLiteralMember ? 0 /* Numeric */ : 1 /* Literal */; + } + function getBaseTypeOfEnumLiteralType(type) { + return type.flags & 1024 /* EnumLiteral */ && !(type.flags & 1048576 /* Union */) ? getDeclaredTypeOfSymbol(getParentOfSymbol(type.symbol)) : type; + } + function getDeclaredTypeOfEnum(symbol) { + var links = getSymbolLinks(symbol); + if (links.declaredType) { + return links.declaredType; + } + if (getEnumKind(symbol) === 1 /* Literal */) { + enumCount++; + var memberTypeList = []; + for (var _i = 0, _a = symbol.declarations; _i < _a.length; _i++) { + var declaration = _a[_i]; + if (declaration.kind === 248 /* EnumDeclaration */) { + for (var _b = 0, _c = declaration.members; _b < _c.length; _b++) { + var member = _c[_b]; + var value = getEnumMemberValue(member); + var memberType = getFreshTypeOfLiteralType(getLiteralType(value !== undefined ? value : 0, enumCount, getSymbolOfNode(member))); + getSymbolLinks(getSymbolOfNode(member)).declaredType = memberType; + memberTypeList.push(getRegularTypeOfLiteralType(memberType)); + } + } + } + if (memberTypeList.length) { + var enumType_1 = getUnionType(memberTypeList, 1 /* Literal */, symbol, /*aliasTypeArguments*/ undefined); + if (enumType_1.flags & 1048576 /* Union */) { + enumType_1.flags |= 1024 /* EnumLiteral */; + enumType_1.symbol = symbol; + } + return links.declaredType = enumType_1; + } + } + var enumType = createType(32 /* Enum */); + enumType.symbol = symbol; + return links.declaredType = enumType; + } + function getDeclaredTypeOfEnumMember(symbol) { + var links = getSymbolLinks(symbol); + if (!links.declaredType) { + var enumType = getDeclaredTypeOfEnum(getParentOfSymbol(symbol)); + if (!links.declaredType) { + links.declaredType = enumType; + } + } + return links.declaredType; + } + function getDeclaredTypeOfTypeParameter(symbol) { + var links = getSymbolLinks(symbol); + return links.declaredType || (links.declaredType = createTypeParameter(symbol)); + } + function getDeclaredTypeOfAlias(symbol) { + var links = getSymbolLinks(symbol); + return links.declaredType || (links.declaredType = getDeclaredTypeOfSymbol(resolveAlias(symbol))); + } + function getDeclaredTypeOfSymbol(symbol) { + return tryGetDeclaredTypeOfSymbol(symbol) || errorType; + } + function tryGetDeclaredTypeOfSymbol(symbol) { + if (symbol.flags & (32 /* Class */ | 64 /* Interface */)) { + return getDeclaredTypeOfClassOrInterface(symbol); + } + if (symbol.flags & 524288 /* TypeAlias */) { + return getDeclaredTypeOfTypeAlias(symbol); + } + if (symbol.flags & 262144 /* TypeParameter */) { + return getDeclaredTypeOfTypeParameter(symbol); + } + if (symbol.flags & 384 /* Enum */) { + return getDeclaredTypeOfEnum(symbol); + } + if (symbol.flags & 8 /* EnumMember */) { + return getDeclaredTypeOfEnumMember(symbol); + } + if (symbol.flags & 2097152 /* Alias */) { + return getDeclaredTypeOfAlias(symbol); + } + return undefined; + } + /** + * A type is free of this references if it's the any, string, number, boolean, symbol, or void keyword, a string + * literal type, an array with an element type that is free of this references, or a type reference that is + * free of this references. + */ + function isThislessType(node) { + switch (node.kind) { + case 125 /* AnyKeyword */: + case 148 /* UnknownKeyword */: + case 143 /* StringKeyword */: + case 140 /* NumberKeyword */: + case 151 /* BigIntKeyword */: + case 128 /* BooleanKeyword */: + case 144 /* SymbolKeyword */: + case 141 /* ObjectKeyword */: + case 110 /* VoidKeyword */: + case 146 /* UndefinedKeyword */: + case 100 /* NullKeyword */: + case 137 /* NeverKeyword */: + case 187 /* LiteralType */: + return true; + case 174 /* ArrayType */: + return isThislessType(node.elementType); + case 169 /* TypeReference */: + return !node.typeArguments || node.typeArguments.every(isThislessType); + } + return false; + } + /** A type parameter is thisless if its constraint is thisless, or if it has no constraint. */ + function isThislessTypeParameter(node) { + var constraint = ts.getEffectiveConstraintOfTypeParameter(node); + return !constraint || isThislessType(constraint); + } + /** + * A variable-like declaration is free of this references if it has a type annotation + * that is thisless, or if it has no type annotation and no initializer (and is thus of type any). + */ + function isThislessVariableLikeDeclaration(node) { + var typeNode = ts.getEffectiveTypeAnnotationNode(node); + return typeNode ? isThislessType(typeNode) : !ts.hasInitializer(node); + } + /** + * A function-like declaration is considered free of `this` references if it has a return type + * annotation that is free of this references and if each parameter is thisless and if + * each type parameter (if present) is thisless. + */ + function isThislessFunctionLikeDeclaration(node) { + var returnType = ts.getEffectiveReturnTypeNode(node); + var typeParameters = ts.getEffectiveTypeParameterDeclarations(node); + return (node.kind === 162 /* Constructor */ || (!!returnType && isThislessType(returnType))) && + node.parameters.every(isThislessVariableLikeDeclaration) && + typeParameters.every(isThislessTypeParameter); + } + /** + * Returns true if the class or interface member given by the symbol is free of "this" references. The + * function may return false for symbols that are actually free of "this" references because it is not + * feasible to perform a complete analysis in all cases. In particular, property members with types + * inferred from their initializers and function members with inferred return types are conservatively + * assumed not to be free of "this" references. + */ + function isThisless(symbol) { + if (symbol.declarations && symbol.declarations.length === 1) { + var declaration = symbol.declarations[0]; + if (declaration) { + switch (declaration.kind) { + case 159 /* PropertyDeclaration */: + case 158 /* PropertySignature */: + return isThislessVariableLikeDeclaration(declaration); + case 161 /* MethodDeclaration */: + case 160 /* MethodSignature */: + case 162 /* Constructor */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + return isThislessFunctionLikeDeclaration(declaration); + } + } + } + return false; + } + // The mappingThisOnly flag indicates that the only type parameter being mapped is "this". When the flag is true, + // we check symbols to see if we can quickly conclude they are free of "this" references, thus needing no instantiation. + function createInstantiatedSymbolTable(symbols, mapper, mappingThisOnly) { + var result = ts.createSymbolTable(); + for (var _i = 0, symbols_2 = symbols; _i < symbols_2.length; _i++) { + var symbol = symbols_2[_i]; + result.set(symbol.escapedName, mappingThisOnly && isThisless(symbol) ? symbol : instantiateSymbol(symbol, mapper)); + } + return result; + } + function addInheritedMembers(symbols, baseSymbols) { + for (var _i = 0, baseSymbols_1 = baseSymbols; _i < baseSymbols_1.length; _i++) { + var s = baseSymbols_1[_i]; + if (!symbols.has(s.escapedName) && !isStaticPrivateIdentifierProperty(s)) { + symbols.set(s.escapedName, s); + } + } + } + function isStaticPrivateIdentifierProperty(s) { + return !!s.valueDeclaration && ts.isPrivateIdentifierPropertyDeclaration(s.valueDeclaration) && ts.hasModifier(s.valueDeclaration, 32 /* Static */); + } + function resolveDeclaredMembers(type) { + if (!type.declaredProperties) { + var symbol = type.symbol; + var members = getMembersOfSymbol(symbol); + type.declaredProperties = getNamedMembers(members); + // Start with signatures at empty array in case of recursive types + type.declaredCallSignatures = ts.emptyArray; + type.declaredConstructSignatures = ts.emptyArray; + type.declaredCallSignatures = getSignaturesOfSymbol(members.get("__call" /* Call */)); + type.declaredConstructSignatures = getSignaturesOfSymbol(members.get("__new" /* New */)); + type.declaredStringIndexInfo = getIndexInfoOfSymbol(symbol, 0 /* String */); + type.declaredNumberIndexInfo = getIndexInfoOfSymbol(symbol, 1 /* Number */); + } + return type; + } + /** + * Indicates whether a type can be used as a property name. + */ + function isTypeUsableAsPropertyName(type) { + return !!(type.flags & 8576 /* StringOrNumberLiteralOrUnique */); + } + /** + * Indicates whether a declaration name is definitely late-bindable. + * A declaration name is only late-bindable if: + * - It is a `ComputedPropertyName`. + * - Its expression is an `Identifier` or either a `PropertyAccessExpression` an + * `ElementAccessExpression` consisting only of these same three types of nodes. + * - The type of its expression is a string or numeric literal type, or is a `unique symbol` type. + */ + function isLateBindableName(node) { + if (!ts.isComputedPropertyName(node) && !ts.isElementAccessExpression(node)) { + return false; + } + var expr = ts.isComputedPropertyName(node) ? node.expression : node.argumentExpression; + return ts.isEntityNameExpression(expr) + && isTypeUsableAsPropertyName(ts.isComputedPropertyName(node) ? checkComputedPropertyName(node) : checkExpressionCached(expr)); + } + function isLateBoundName(name) { + return name.charCodeAt(0) === 95 /* _ */ && + name.charCodeAt(1) === 95 /* _ */ && + name.charCodeAt(2) === 64 /* at */; + } + /** + * Indicates whether a declaration has a late-bindable dynamic name. + */ + function hasLateBindableName(node) { + var name = ts.getNameOfDeclaration(node); + return !!name && isLateBindableName(name); + } + /** + * Indicates whether a declaration has a dynamic name that cannot be late-bound. + */ + function hasNonBindableDynamicName(node) { + return ts.hasDynamicName(node) && !hasLateBindableName(node); + } + /** + * Indicates whether a declaration name is a dynamic name that cannot be late-bound. + */ + function isNonBindableDynamicName(node) { + return ts.isDynamicName(node) && !isLateBindableName(node); + } + /** + * Gets the symbolic name for a member from its type. + */ + function getPropertyNameFromType(type) { + if (type.flags & 8192 /* UniqueESSymbol */) { + return type.escapedName; + } + if (type.flags & (128 /* StringLiteral */ | 256 /* NumberLiteral */)) { + return ts.escapeLeadingUnderscores("" + type.value); + } + return ts.Debug.fail(); + } + /** + * Adds a declaration to a late-bound dynamic member. This performs the same function for + * late-bound members that `addDeclarationToSymbol` in binder.ts performs for early-bound + * members. + */ + function addDeclarationToLateBoundSymbol(symbol, member, symbolFlags) { + ts.Debug.assert(!!(ts.getCheckFlags(symbol) & 4096 /* Late */), "Expected a late-bound symbol."); + symbol.flags |= symbolFlags; + getSymbolLinks(member.symbol).lateSymbol = symbol; + if (!symbol.declarations) { + symbol.declarations = [member]; + } + else { + symbol.declarations.push(member); + } + if (symbolFlags & 111551 /* Value */) { + if (!symbol.valueDeclaration || symbol.valueDeclaration.kind !== member.kind) { + symbol.valueDeclaration = member; + } + } + } + /** + * Performs late-binding of a dynamic member. This performs the same function for + * late-bound members that `declareSymbol` in binder.ts performs for early-bound + * members. + * + * If a symbol is a dynamic name from a computed property, we perform an additional "late" + * binding phase to attempt to resolve the name for the symbol from the type of the computed + * property's expression. If the type of the expression is a string-literal, numeric-literal, + * or unique symbol type, we can use that type as the name of the symbol. + * + * For example, given: + * + * const x = Symbol(); + * + * interface I { + * [x]: number; + * } + * + * The binder gives the property `[x]: number` a special symbol with the name "__computed". + * In the late-binding phase we can type-check the expression `x` and see that it has a + * unique symbol type which we can then use as the name of the member. This allows users + * to define custom symbols that can be used in the members of an object type. + * + * @param parent The containing symbol for the member. + * @param earlySymbols The early-bound symbols of the parent. + * @param lateSymbols The late-bound symbols of the parent. + * @param decl The member to bind. + */ + function lateBindMember(parent, earlySymbols, lateSymbols, decl) { + ts.Debug.assert(!!decl.symbol, "The member is expected to have a symbol."); + var links = getNodeLinks(decl); + if (!links.resolvedSymbol) { + // In the event we attempt to resolve the late-bound name of this member recursively, + // fall back to the early-bound name of this member. + links.resolvedSymbol = decl.symbol; + var declName = ts.isBinaryExpression(decl) ? decl.left : decl.name; + var type = ts.isElementAccessExpression(declName) ? checkExpressionCached(declName.argumentExpression) : checkComputedPropertyName(declName); + if (isTypeUsableAsPropertyName(type)) { + var memberName = getPropertyNameFromType(type); + var symbolFlags = decl.symbol.flags; + // Get or add a late-bound symbol for the member. This allows us to merge late-bound accessor declarations. + var lateSymbol = lateSymbols.get(memberName); + if (!lateSymbol) + lateSymbols.set(memberName, lateSymbol = createSymbol(0 /* None */, memberName, 4096 /* Late */)); + // Report an error if a late-bound member has the same name as an early-bound member, + // or if we have another early-bound symbol declaration with the same name and + // conflicting flags. + var earlySymbol = earlySymbols && earlySymbols.get(memberName); + if (lateSymbol.flags & getExcludedSymbolFlags(symbolFlags) || earlySymbol) { + // If we have an existing early-bound member, combine its declarations so that we can + // report an error at each declaration. + var declarations = earlySymbol ? ts.concatenate(earlySymbol.declarations, lateSymbol.declarations) : lateSymbol.declarations; + var name_3 = !(type.flags & 8192 /* UniqueESSymbol */) && ts.unescapeLeadingUnderscores(memberName) || ts.declarationNameToString(declName); + ts.forEach(declarations, function (declaration) { return error(ts.getNameOfDeclaration(declaration) || declaration, ts.Diagnostics.Property_0_was_also_declared_here, name_3); }); + error(declName || decl, ts.Diagnostics.Duplicate_property_0, name_3); + lateSymbol = createSymbol(0 /* None */, memberName, 4096 /* Late */); + } + lateSymbol.nameType = type; + addDeclarationToLateBoundSymbol(lateSymbol, decl, symbolFlags); + if (lateSymbol.parent) { + ts.Debug.assert(lateSymbol.parent === parent, "Existing symbol parent should match new one"); + } + else { + lateSymbol.parent = parent; + } + return links.resolvedSymbol = lateSymbol; + } + } + return links.resolvedSymbol; + } + function getResolvedMembersOrExportsOfSymbol(symbol, resolutionKind) { + var links = getSymbolLinks(symbol); + if (!links[resolutionKind]) { + var isStatic = resolutionKind === "resolvedExports" /* resolvedExports */; + var earlySymbols = !isStatic ? symbol.members : + symbol.flags & 1536 /* Module */ ? getExportsOfModuleWorker(symbol) : + symbol.exports; + // In the event we recursively resolve the members/exports of the symbol, we + // set the initial value of resolvedMembers/resolvedExports to the early-bound + // members/exports of the symbol. + links[resolutionKind] = earlySymbols || emptySymbols; + // fill in any as-yet-unresolved late-bound members. + var lateSymbols = ts.createSymbolTable(); + for (var _i = 0, _a = symbol.declarations; _i < _a.length; _i++) { + var decl = _a[_i]; + var members = ts.getMembersOfDeclaration(decl); + if (members) { + for (var _b = 0, members_5 = members; _b < members_5.length; _b++) { + var member = members_5[_b]; + if (isStatic === ts.hasStaticModifier(member) && hasLateBindableName(member)) { + lateBindMember(symbol, earlySymbols, lateSymbols, member); + } + } + } + } + var assignments = symbol.assignmentDeclarationMembers; + if (assignments) { + var decls = ts.arrayFrom(assignments.values()); + for (var _c = 0, decls_1 = decls; _c < decls_1.length; _c++) { + var member = decls_1[_c]; + var assignmentKind = ts.getAssignmentDeclarationKind(member); + var isInstanceMember = assignmentKind === 3 /* PrototypeProperty */ + || assignmentKind === 4 /* ThisProperty */ + || assignmentKind === 9 /* ObjectDefinePrototypeProperty */ + || assignmentKind === 6 /* Prototype */; // A straight `Prototype` assignment probably can never have a computed name + if (isStatic === !isInstanceMember && hasLateBindableName(member)) { + lateBindMember(symbol, earlySymbols, lateSymbols, member); + } + } + } + links[resolutionKind] = combineSymbolTables(earlySymbols, lateSymbols) || emptySymbols; + } + return links[resolutionKind]; + } + /** + * Gets a SymbolTable containing both the early- and late-bound members of a symbol. + * + * For a description of late-binding, see `lateBindMember`. + */ + function getMembersOfSymbol(symbol) { + return symbol.flags & 6256 /* LateBindingContainer */ + ? getResolvedMembersOrExportsOfSymbol(symbol, "resolvedMembers" /* resolvedMembers */) + : symbol.members || emptySymbols; + } + /** + * If a symbol is the dynamic name of the member of an object type, get the late-bound + * symbol of the member. + * + * For a description of late-binding, see `lateBindMember`. + */ + function getLateBoundSymbol(symbol) { + if (symbol.flags & 106500 /* ClassMember */ && symbol.escapedName === "__computed" /* Computed */) { + var links = getSymbolLinks(symbol); + if (!links.lateSymbol && ts.some(symbol.declarations, hasLateBindableName)) { + // force late binding of members/exports. This will set the late-bound symbol + var parent = getMergedSymbol(symbol.parent); + if (ts.some(symbol.declarations, ts.hasStaticModifier)) { + getExportsOfSymbol(parent); + } + else { + getMembersOfSymbol(parent); + } + } + return links.lateSymbol || (links.lateSymbol = symbol); + } + return symbol; + } + function getTypeWithThisArgument(type, thisArgument, needApparentType) { + if (ts.getObjectFlags(type) & 4 /* Reference */) { + var target = type.target; + var typeArguments = getTypeArguments(type); + if (ts.length(target.typeParameters) === ts.length(typeArguments)) { + var ref = createTypeReference(target, ts.concatenate(typeArguments, [thisArgument || target.thisType])); + return needApparentType ? getApparentType(ref) : ref; + } + } + else if (type.flags & 2097152 /* Intersection */) { + return getIntersectionType(ts.map(type.types, function (t) { return getTypeWithThisArgument(t, thisArgument, needApparentType); })); + } + return needApparentType ? getApparentType(type) : type; + } + function resolveObjectTypeMembers(type, source, typeParameters, typeArguments) { + var mapper; + var members; + var callSignatures; + var constructSignatures; + var stringIndexInfo; + var numberIndexInfo; + if (ts.rangeEquals(typeParameters, typeArguments, 0, typeParameters.length)) { + members = source.symbol ? getMembersOfSymbol(source.symbol) : ts.createSymbolTable(source.declaredProperties); + callSignatures = source.declaredCallSignatures; + constructSignatures = source.declaredConstructSignatures; + stringIndexInfo = source.declaredStringIndexInfo; + numberIndexInfo = source.declaredNumberIndexInfo; + } + else { + mapper = createTypeMapper(typeParameters, typeArguments); + members = createInstantiatedSymbolTable(source.declaredProperties, mapper, /*mappingThisOnly*/ typeParameters.length === 1); + callSignatures = instantiateSignatures(source.declaredCallSignatures, mapper); + constructSignatures = instantiateSignatures(source.declaredConstructSignatures, mapper); + stringIndexInfo = instantiateIndexInfo(source.declaredStringIndexInfo, mapper); + numberIndexInfo = instantiateIndexInfo(source.declaredNumberIndexInfo, mapper); + } + var baseTypes = getBaseTypes(source); + if (baseTypes.length) { + if (source.symbol && members === getMembersOfSymbol(source.symbol)) { + members = ts.createSymbolTable(source.declaredProperties); + } + setStructuredTypeMembers(type, members, callSignatures, constructSignatures, stringIndexInfo, numberIndexInfo); + var thisArgument = ts.lastOrUndefined(typeArguments); + for (var _i = 0, baseTypes_1 = baseTypes; _i < baseTypes_1.length; _i++) { + var baseType = baseTypes_1[_i]; + var instantiatedBaseType = thisArgument ? getTypeWithThisArgument(instantiateType(baseType, mapper), thisArgument) : baseType; + addInheritedMembers(members, getPropertiesOfType(instantiatedBaseType)); + callSignatures = ts.concatenate(callSignatures, getSignaturesOfType(instantiatedBaseType, 0 /* Call */)); + constructSignatures = ts.concatenate(constructSignatures, getSignaturesOfType(instantiatedBaseType, 1 /* Construct */)); + if (!stringIndexInfo) { + stringIndexInfo = instantiatedBaseType === anyType ? + createIndexInfo(anyType, /*isReadonly*/ false) : + getIndexInfoOfType(instantiatedBaseType, 0 /* String */); + } + numberIndexInfo = numberIndexInfo || getIndexInfoOfType(instantiatedBaseType, 1 /* Number */); + } + } + setStructuredTypeMembers(type, members, callSignatures, constructSignatures, stringIndexInfo, numberIndexInfo); + } + function resolveClassOrInterfaceMembers(type) { + resolveObjectTypeMembers(type, resolveDeclaredMembers(type), ts.emptyArray, ts.emptyArray); + } + function resolveTypeReferenceMembers(type) { + var source = resolveDeclaredMembers(type.target); + var typeParameters = ts.concatenate(source.typeParameters, [source.thisType]); + var typeArguments = getTypeArguments(type); + var paddedTypeArguments = typeArguments.length === typeParameters.length ? typeArguments : ts.concatenate(typeArguments, [type]); + resolveObjectTypeMembers(type, source, typeParameters, paddedTypeArguments); + } + function createSignature(declaration, typeParameters, thisParameter, parameters, resolvedReturnType, resolvedTypePredicate, minArgumentCount, flags) { + var sig = new Signature(checker, flags); + sig.declaration = declaration; + sig.typeParameters = typeParameters; + sig.parameters = parameters; + sig.thisParameter = thisParameter; + sig.resolvedReturnType = resolvedReturnType; + sig.resolvedTypePredicate = resolvedTypePredicate; + sig.minArgumentCount = minArgumentCount; + sig.target = undefined; + sig.mapper = undefined; + sig.unionSignatures = undefined; + return sig; + } + function cloneSignature(sig) { + var result = createSignature(sig.declaration, sig.typeParameters, sig.thisParameter, sig.parameters, /*resolvedReturnType*/ undefined, + /*resolvedTypePredicate*/ undefined, sig.minArgumentCount, sig.flags & 3 /* PropagatingFlags */); + result.target = sig.target; + result.mapper = sig.mapper; + result.unionSignatures = sig.unionSignatures; + return result; + } + function createUnionSignature(signature, unionSignatures) { + var result = cloneSignature(signature); + result.unionSignatures = unionSignatures; + result.target = undefined; + result.mapper = undefined; + return result; + } + function getOptionalCallSignature(signature, callChainFlags) { + if ((signature.flags & 12 /* CallChainFlags */) === callChainFlags) { + return signature; + } + if (!signature.optionalCallSignatureCache) { + signature.optionalCallSignatureCache = {}; + } + var key = callChainFlags === 4 /* IsInnerCallChain */ ? "inner" : "outer"; + return signature.optionalCallSignatureCache[key] + || (signature.optionalCallSignatureCache[key] = createOptionalCallSignature(signature, callChainFlags)); + } + function createOptionalCallSignature(signature, callChainFlags) { + ts.Debug.assert(callChainFlags === 4 /* IsInnerCallChain */ || callChainFlags === 8 /* IsOuterCallChain */, "An optional call signature can either be for an inner call chain or an outer call chain, but not both."); + var result = cloneSignature(signature); + result.flags |= callChainFlags; + return result; + } + function getExpandedParameters(sig) { + if (signatureHasRestParameter(sig)) { + var restIndex_1 = sig.parameters.length - 1; + var restParameter = sig.parameters[restIndex_1]; + var restType = getTypeOfSymbol(restParameter); + if (isTupleType(restType)) { + var elementTypes = getTypeArguments(restType); + var minLength_1 = restType.target.minLength; + var tupleRestIndex_1 = restType.target.hasRestElement ? elementTypes.length - 1 : -1; + var restParams = ts.map(elementTypes, function (t, i) { + var name = getParameterNameAtPosition(sig, restIndex_1 + i); + var checkFlags = i === tupleRestIndex_1 ? 32768 /* RestParameter */ : + i >= minLength_1 ? 16384 /* OptionalParameter */ : 0; + var symbol = createSymbol(1 /* FunctionScopedVariable */, name, checkFlags); + symbol.type = i === tupleRestIndex_1 ? createArrayType(t) : t; + return symbol; + }); + return ts.concatenate(sig.parameters.slice(0, restIndex_1), restParams); + } + } + return sig.parameters; + } + function getDefaultConstructSignatures(classType) { + var baseConstructorType = getBaseConstructorTypeOfClass(classType); + var baseSignatures = getSignaturesOfType(baseConstructorType, 1 /* Construct */); + if (baseSignatures.length === 0) { + return [createSignature(undefined, classType.localTypeParameters, undefined, ts.emptyArray, classType, /*resolvedTypePredicate*/ undefined, 0, 0 /* None */)]; + } + var baseTypeNode = getBaseTypeNodeOfClass(classType); + var isJavaScript = ts.isInJSFile(baseTypeNode); + var typeArguments = typeArgumentsFromTypeReferenceNode(baseTypeNode); + var typeArgCount = ts.length(typeArguments); + var result = []; + for (var _i = 0, baseSignatures_1 = baseSignatures; _i < baseSignatures_1.length; _i++) { + var baseSig = baseSignatures_1[_i]; + var minTypeArgumentCount = getMinTypeArgumentCount(baseSig.typeParameters); + var typeParamCount = ts.length(baseSig.typeParameters); + if (isJavaScript || typeArgCount >= minTypeArgumentCount && typeArgCount <= typeParamCount) { + var sig = typeParamCount ? createSignatureInstantiation(baseSig, fillMissingTypeArguments(typeArguments, baseSig.typeParameters, minTypeArgumentCount, isJavaScript)) : cloneSignature(baseSig); + sig.typeParameters = classType.localTypeParameters; + sig.resolvedReturnType = classType; + result.push(sig); + } + } + return result; + } + function findMatchingSignature(signatureList, signature, partialMatch, ignoreThisTypes, ignoreReturnTypes) { + for (var _i = 0, signatureList_1 = signatureList; _i < signatureList_1.length; _i++) { + var s = signatureList_1[_i]; + if (compareSignaturesIdentical(s, signature, partialMatch, ignoreThisTypes, ignoreReturnTypes, partialMatch ? compareTypesSubtypeOf : compareTypesIdentical)) { + return s; + } + } + } + function findMatchingSignatures(signatureLists, signature, listIndex) { + if (signature.typeParameters) { + // We require an exact match for generic signatures, so we only return signatures from the first + // signature list and only if they have exact matches in the other signature lists. + if (listIndex > 0) { + return undefined; + } + for (var i = 1; i < signatureLists.length; i++) { + if (!findMatchingSignature(signatureLists[i], signature, /*partialMatch*/ false, /*ignoreThisTypes*/ false, /*ignoreReturnTypes*/ false)) { + return undefined; + } + } + return [signature]; + } + var result; + for (var i = 0; i < signatureLists.length; i++) { + // Allow matching non-generic signatures to have excess parameters and different return types. + // Prefer matching this types if possible. + var match = i === listIndex ? signature : findMatchingSignature(signatureLists[i], signature, /*partialMatch*/ true, /*ignoreThisTypes*/ false, /*ignoreReturnTypes*/ true); + if (!match) { + return undefined; + } + result = ts.appendIfUnique(result, match); + } + return result; + } + // The signatures of a union type are those signatures that are present in each of the constituent types. + // Generic signatures must match exactly, but non-generic signatures are allowed to have extra optional + // parameters and may differ in return types. When signatures differ in return types, the resulting return + // type is the union of the constituent return types. + function getUnionSignatures(signatureLists) { + var result; + var indexWithLengthOverOne; + for (var i = 0; i < signatureLists.length; i++) { + if (signatureLists[i].length === 0) + return ts.emptyArray; + if (signatureLists[i].length > 1) { + indexWithLengthOverOne = indexWithLengthOverOne === undefined ? i : -1; // -1 is a signal there are multiple overload sets + } + for (var _i = 0, _a = signatureLists[i]; _i < _a.length; _i++) { + var signature = _a[_i]; + // Only process signatures with parameter lists that aren't already in the result list + if (!result || !findMatchingSignature(result, signature, /*partialMatch*/ false, /*ignoreThisTypes*/ false, /*ignoreReturnTypes*/ true)) { + var unionSignatures = findMatchingSignatures(signatureLists, signature, i); + if (unionSignatures) { + var s = signature; + // Union the result types when more than one signature matches + if (unionSignatures.length > 1) { + var thisParameter = signature.thisParameter; + var firstThisParameterOfUnionSignatures = ts.forEach(unionSignatures, function (sig) { return sig.thisParameter; }); + if (firstThisParameterOfUnionSignatures) { + var thisType = getIntersectionType(ts.mapDefined(unionSignatures, function (sig) { return sig.thisParameter && getTypeOfSymbol(sig.thisParameter); })); + thisParameter = createSymbolWithType(firstThisParameterOfUnionSignatures, thisType); + } + s = createUnionSignature(signature, unionSignatures); + s.thisParameter = thisParameter; + } + (result || (result = [])).push(s); + } + } + } + } + if (!ts.length(result) && indexWithLengthOverOne !== -1) { + // No sufficiently similar signature existed to subsume all the other signatures in the union - time to see if we can make a single + // signature that handles all over them. We only do this when there are overloads in only one constituent. + // (Overloads are conditional in nature and having overloads in multiple constituents would necessitate making a power set of + // signatures from the type, whose ordering would be non-obvious) + var masterList = signatureLists[indexWithLengthOverOne !== undefined ? indexWithLengthOverOne : 0]; + var results = masterList.slice(); + var _loop_9 = function (signatures) { + if (signatures !== masterList) { + var signature_1 = signatures[0]; + ts.Debug.assert(!!signature_1, "getUnionSignatures bails early on empty signature lists and should not have empty lists on second pass"); + results = signature_1.typeParameters && ts.some(results, function (s) { return !!s.typeParameters; }) ? undefined : ts.map(results, function (sig) { return combineSignaturesOfUnionMembers(sig, signature_1); }); + if (!results) { + return "break"; + } + } + }; + for (var _b = 0, signatureLists_1 = signatureLists; _b < signatureLists_1.length; _b++) { + var signatures = signatureLists_1[_b]; + var state_3 = _loop_9(signatures); + if (state_3 === "break") + break; + } + result = results; + } + return result || ts.emptyArray; + } + function combineUnionThisParam(left, right) { + if (!left || !right) { + return left || right; + } + // A signature `this` type might be a read or a write position... It's very possible that it should be invariant + // and we should refuse to merge signatures if there are `this` types and they do not match. However, so as to be + // permissive when calling, for now, we'll intersect the `this` types just like we do for param types in union signatures. + var thisType = getIntersectionType([getTypeOfSymbol(left), getTypeOfSymbol(right)]); + return createSymbolWithType(left, thisType); + } + function combineUnionParameters(left, right) { + var leftCount = getParameterCount(left); + var rightCount = getParameterCount(right); + var longest = leftCount >= rightCount ? left : right; + var shorter = longest === left ? right : left; + var longestCount = longest === left ? leftCount : rightCount; + var eitherHasEffectiveRest = (hasEffectiveRestParameter(left) || hasEffectiveRestParameter(right)); + var needsExtraRestElement = eitherHasEffectiveRest && !hasEffectiveRestParameter(longest); + var params = new Array(longestCount + (needsExtraRestElement ? 1 : 0)); + for (var i = 0; i < longestCount; i++) { + var longestParamType = tryGetTypeAtPosition(longest, i); + var shorterParamType = tryGetTypeAtPosition(shorter, i) || unknownType; + var unionParamType = getIntersectionType([longestParamType, shorterParamType]); + var isRestParam = eitherHasEffectiveRest && !needsExtraRestElement && i === (longestCount - 1); + var isOptional = i >= getMinArgumentCount(longest) && i >= getMinArgumentCount(shorter); + var leftName = i >= leftCount ? undefined : getParameterNameAtPosition(left, i); + var rightName = i >= rightCount ? undefined : getParameterNameAtPosition(right, i); + var paramName = leftName === rightName ? leftName : + !leftName ? rightName : + !rightName ? leftName : + undefined; + var paramSymbol = createSymbol(1 /* FunctionScopedVariable */ | (isOptional && !isRestParam ? 16777216 /* Optional */ : 0), paramName || "arg" + i); + paramSymbol.type = isRestParam ? createArrayType(unionParamType) : unionParamType; + params[i] = paramSymbol; + } + if (needsExtraRestElement) { + var restParamSymbol = createSymbol(1 /* FunctionScopedVariable */, "args"); + restParamSymbol.type = createArrayType(getTypeAtPosition(shorter, longestCount)); + params[longestCount] = restParamSymbol; + } + return params; + } + function combineSignaturesOfUnionMembers(left, right) { + var declaration = left.declaration; + var params = combineUnionParameters(left, right); + var thisParam = combineUnionThisParam(left.thisParameter, right.thisParameter); + var minArgCount = Math.max(left.minArgumentCount, right.minArgumentCount); + var result = createSignature(declaration, left.typeParameters || right.typeParameters, thisParam, params, + /*resolvedReturnType*/ undefined, + /*resolvedTypePredicate*/ undefined, minArgCount, (left.flags | right.flags) & 3 /* PropagatingFlags */); + result.unionSignatures = ts.concatenate(left.unionSignatures || [left], [right]); + return result; + } + function getUnionIndexInfo(types, kind) { + var indexTypes = []; + var isAnyReadonly = false; + for (var _i = 0, types_3 = types; _i < types_3.length; _i++) { + var type = types_3[_i]; + var indexInfo = getIndexInfoOfType(getApparentType(type), kind); + if (!indexInfo) { + return undefined; + } + indexTypes.push(indexInfo.type); + isAnyReadonly = isAnyReadonly || indexInfo.isReadonly; + } + return createIndexInfo(getUnionType(indexTypes, 2 /* Subtype */), isAnyReadonly); + } + function resolveUnionTypeMembers(type) { + // The members and properties collections are empty for union types. To get all properties of a union + // type use getPropertiesOfType (only the language service uses this). + var callSignatures = getUnionSignatures(ts.map(type.types, function (t) { return t === globalFunctionType ? [unknownSignature] : getSignaturesOfType(t, 0 /* Call */); })); + var constructSignatures = getUnionSignatures(ts.map(type.types, function (t) { return getSignaturesOfType(t, 1 /* Construct */); })); + var stringIndexInfo = getUnionIndexInfo(type.types, 0 /* String */); + var numberIndexInfo = getUnionIndexInfo(type.types, 1 /* Number */); + setStructuredTypeMembers(type, emptySymbols, callSignatures, constructSignatures, stringIndexInfo, numberIndexInfo); + } + function intersectTypes(type1, type2) { + return !type1 ? type2 : !type2 ? type1 : getIntersectionType([type1, type2]); + } + function intersectIndexInfos(info1, info2) { + return !info1 ? info2 : !info2 ? info1 : createIndexInfo(getIntersectionType([info1.type, info2.type]), info1.isReadonly && info2.isReadonly); + } + function unionSpreadIndexInfos(info1, info2) { + return info1 && info2 && createIndexInfo(getUnionType([info1.type, info2.type]), info1.isReadonly || info2.isReadonly); + } + function findMixins(types) { + var constructorTypeCount = ts.countWhere(types, function (t) { return getSignaturesOfType(t, 1 /* Construct */).length > 0; }); + var mixinFlags = ts.map(types, isMixinConstructorType); + if (constructorTypeCount > 0 && constructorTypeCount === ts.countWhere(mixinFlags, function (b) { return b; })) { + var firstMixinIndex = mixinFlags.indexOf(/*searchElement*/ true); + mixinFlags[firstMixinIndex] = false; + } + return mixinFlags; + } + function includeMixinType(type, types, mixinFlags, index) { + var mixedTypes = []; + for (var i = 0; i < types.length; i++) { + if (i === index) { + mixedTypes.push(type); + } + else if (mixinFlags[i]) { + mixedTypes.push(getReturnTypeOfSignature(getSignaturesOfType(types[i], 1 /* Construct */)[0])); + } + } + return getIntersectionType(mixedTypes); + } + function resolveIntersectionTypeMembers(type) { + // The members and properties collections are empty for intersection types. To get all properties of an + // intersection type use getPropertiesOfType (only the language service uses this). + var callSignatures; + var constructSignatures; + var stringIndexInfo; + var numberIndexInfo; + var types = type.types; + var mixinFlags = findMixins(types); + var mixinCount = ts.countWhere(mixinFlags, function (b) { return b; }); + var _loop_10 = function (i) { + var t = type.types[i]; + // When an intersection type contains mixin constructor types, the construct signatures from + // those types are discarded and their return types are mixed into the return types of all + // other construct signatures in the intersection type. For example, the intersection type + // '{ new(...args: any[]) => A } & { new(s: string) => B }' has a single construct signature + // 'new(s: string) => A & B'. + if (!mixinFlags[i]) { + var signatures = getSignaturesOfType(t, 1 /* Construct */); + if (signatures.length && mixinCount > 0) { + signatures = ts.map(signatures, function (s) { + var clone = cloneSignature(s); + clone.resolvedReturnType = includeMixinType(getReturnTypeOfSignature(s), types, mixinFlags, i); + return clone; + }); + } + constructSignatures = appendSignatures(constructSignatures, signatures); + } + callSignatures = appendSignatures(callSignatures, getSignaturesOfType(t, 0 /* Call */)); + stringIndexInfo = intersectIndexInfos(stringIndexInfo, getIndexInfoOfType(t, 0 /* String */)); + numberIndexInfo = intersectIndexInfos(numberIndexInfo, getIndexInfoOfType(t, 1 /* Number */)); + }; + for (var i = 0; i < types.length; i++) { + _loop_10(i); + } + setStructuredTypeMembers(type, emptySymbols, callSignatures || ts.emptyArray, constructSignatures || ts.emptyArray, stringIndexInfo, numberIndexInfo); + } + function appendSignatures(signatures, newSignatures) { + var _loop_11 = function (sig) { + if (!signatures || ts.every(signatures, function (s) { return !compareSignaturesIdentical(s, sig, /*partialMatch*/ false, /*ignoreThisTypes*/ false, /*ignoreReturnTypes*/ false, compareTypesIdentical); })) { + signatures = ts.append(signatures, sig); + } + }; + for (var _i = 0, newSignatures_1 = newSignatures; _i < newSignatures_1.length; _i++) { + var sig = newSignatures_1[_i]; + _loop_11(sig); + } + return signatures; + } + /** + * Converts an AnonymousType to a ResolvedType. + */ + function resolveAnonymousTypeMembers(type) { + var symbol = getMergedSymbol(type.symbol); + if (type.target) { + setStructuredTypeMembers(type, emptySymbols, ts.emptyArray, ts.emptyArray, undefined, undefined); + var members = createInstantiatedSymbolTable(getPropertiesOfObjectType(type.target), type.mapper, /*mappingThisOnly*/ false); + var callSignatures = instantiateSignatures(getSignaturesOfType(type.target, 0 /* Call */), type.mapper); + var constructSignatures = instantiateSignatures(getSignaturesOfType(type.target, 1 /* Construct */), type.mapper); + var stringIndexInfo = instantiateIndexInfo(getIndexInfoOfType(type.target, 0 /* String */), type.mapper); + var numberIndexInfo = instantiateIndexInfo(getIndexInfoOfType(type.target, 1 /* Number */), type.mapper); + setStructuredTypeMembers(type, members, callSignatures, constructSignatures, stringIndexInfo, numberIndexInfo); + } + else if (symbol.flags & 2048 /* TypeLiteral */) { + setStructuredTypeMembers(type, emptySymbols, ts.emptyArray, ts.emptyArray, undefined, undefined); + var members = getMembersOfSymbol(symbol); + var callSignatures = getSignaturesOfSymbol(members.get("__call" /* Call */)); + var constructSignatures = getSignaturesOfSymbol(members.get("__new" /* New */)); + var stringIndexInfo = getIndexInfoOfSymbol(symbol, 0 /* String */); + var numberIndexInfo = getIndexInfoOfSymbol(symbol, 1 /* Number */); + setStructuredTypeMembers(type, members, callSignatures, constructSignatures, stringIndexInfo, numberIndexInfo); + } + else { + // Combinations of function, class, enum and module + var members = emptySymbols; + var stringIndexInfo = void 0; + if (symbol.exports) { + members = getExportsOfSymbol(symbol); + if (symbol === globalThisSymbol) { + var varsOnly_1 = ts.createMap(); + members.forEach(function (p) { + if (!(p.flags & 418 /* BlockScoped */)) { + varsOnly_1.set(p.escapedName, p); + } + }); + members = varsOnly_1; + } + } + setStructuredTypeMembers(type, members, ts.emptyArray, ts.emptyArray, undefined, undefined); + if (symbol.flags & 32 /* Class */) { + var classType = getDeclaredTypeOfClassOrInterface(symbol); + var baseConstructorType = getBaseConstructorTypeOfClass(classType); + if (baseConstructorType.flags & (524288 /* Object */ | 2097152 /* Intersection */ | 8650752 /* TypeVariable */)) { + members = ts.createSymbolTable(getNamedMembers(members)); + addInheritedMembers(members, getPropertiesOfType(baseConstructorType)); + } + else if (baseConstructorType === anyType) { + stringIndexInfo = createIndexInfo(anyType, /*isReadonly*/ false); + } + } + var numberIndexInfo = symbol.flags & 384 /* Enum */ && (getDeclaredTypeOfSymbol(symbol).flags & 32 /* Enum */ || + ts.some(type.properties, function (prop) { return !!(getTypeOfSymbol(prop).flags & 296 /* NumberLike */); })) ? enumNumberIndexInfo : undefined; + setStructuredTypeMembers(type, members, ts.emptyArray, ts.emptyArray, stringIndexInfo, numberIndexInfo); + // We resolve the members before computing the signatures because a signature may use + // typeof with a qualified name expression that circularly references the type we are + // in the process of resolving (see issue #6072). The temporarily empty signature list + // will never be observed because a qualified name can't reference signatures. + if (symbol.flags & (16 /* Function */ | 8192 /* Method */)) { + type.callSignatures = getSignaturesOfSymbol(symbol); + } + // And likewise for construct signatures for classes + if (symbol.flags & 32 /* Class */) { + var classType_1 = getDeclaredTypeOfClassOrInterface(symbol); + var constructSignatures = symbol.members ? getSignaturesOfSymbol(symbol.members.get("__constructor" /* Constructor */)) : ts.emptyArray; + if (symbol.flags & 16 /* Function */) { + constructSignatures = ts.addRange(constructSignatures.slice(), ts.mapDefined(type.callSignatures, function (sig) { return isJSConstructor(sig.declaration) ? + createSignature(sig.declaration, sig.typeParameters, sig.thisParameter, sig.parameters, classType_1, /*resolvedTypePredicate*/ undefined, sig.minArgumentCount, sig.flags & 3 /* PropagatingFlags */) : + undefined; })); + } + if (!constructSignatures.length) { + constructSignatures = getDefaultConstructSignatures(classType_1); + } + type.constructSignatures = constructSignatures; + } + } + } + function resolveReverseMappedTypeMembers(type) { + var indexInfo = getIndexInfoOfType(type.source, 0 /* String */); + var modifiers = getMappedTypeModifiers(type.mappedType); + var readonlyMask = modifiers & 1 /* IncludeReadonly */ ? false : true; + var optionalMask = modifiers & 4 /* IncludeOptional */ ? 0 : 16777216 /* Optional */; + var stringIndexInfo = indexInfo && createIndexInfo(inferReverseMappedType(indexInfo.type, type.mappedType, type.constraintType), readonlyMask && indexInfo.isReadonly); + var members = ts.createSymbolTable(); + for (var _i = 0, _a = getPropertiesOfType(type.source); _i < _a.length; _i++) { + var prop = _a[_i]; + var checkFlags = 8192 /* ReverseMapped */ | (readonlyMask && isReadonlySymbol(prop) ? 8 /* Readonly */ : 0); + var inferredProp = createSymbol(4 /* Property */ | prop.flags & optionalMask, prop.escapedName, checkFlags); + inferredProp.declarations = prop.declarations; + inferredProp.nameType = getSymbolLinks(prop).nameType; + inferredProp.propertyType = getTypeOfSymbol(prop); + inferredProp.mappedType = type.mappedType; + inferredProp.constraintType = type.constraintType; + members.set(prop.escapedName, inferredProp); + } + setStructuredTypeMembers(type, members, ts.emptyArray, ts.emptyArray, stringIndexInfo, undefined); + } + // Return the lower bound of the key type in a mapped type. Intuitively, the lower + // bound includes those keys that are known to always be present, for example because + // because of constraints on type parameters (e.g. 'keyof T' for a constrained T). + function getLowerBoundOfKeyType(type) { + if (type.flags & (1 /* Any */ | 131068 /* Primitive */)) { + return type; + } + if (type.flags & 4194304 /* Index */) { + return getIndexType(getApparentType(type.type)); + } + if (type.flags & 16777216 /* Conditional */) { + if (type.root.isDistributive) { + var checkType = type.checkType; + var constraint = getLowerBoundOfKeyType(checkType); + if (constraint !== checkType) { + return getConditionalTypeInstantiation(type, prependTypeMapping(type.root.checkType, constraint, type.mapper)); + } + } + return type; + } + if (type.flags & 1048576 /* Union */) { + return getUnionType(ts.sameMap(type.types, getLowerBoundOfKeyType)); + } + if (type.flags & 2097152 /* Intersection */) { + return getIntersectionType(ts.sameMap(type.types, getLowerBoundOfKeyType)); + } + return neverType; + } + /** Resolve the members of a mapped type { [P in K]: T } */ + function resolveMappedTypeMembers(type) { + var members = ts.createSymbolTable(); + var stringIndexInfo; + var numberIndexInfo; + // Resolve upfront such that recursive references see an empty object type. + setStructuredTypeMembers(type, emptySymbols, ts.emptyArray, ts.emptyArray, undefined, undefined); + // In { [P in K]: T }, we refer to P as the type parameter type, K as the constraint type, + // and T as the template type. + var typeParameter = getTypeParameterFromMappedType(type); + var constraintType = getConstraintTypeFromMappedType(type); + var templateType = getTemplateTypeFromMappedType(type.target || type); + var modifiersType = getApparentType(getModifiersTypeFromMappedType(type)); // The 'T' in 'keyof T' + var templateModifiers = getMappedTypeModifiers(type); + var include = keyofStringsOnly ? 128 /* StringLiteral */ : 8576 /* StringOrNumberLiteralOrUnique */; + if (isMappedTypeWithKeyofConstraintDeclaration(type)) { + // We have a { [P in keyof T]: X } + for (var _i = 0, _a = getPropertiesOfType(modifiersType); _i < _a.length; _i++) { + var prop = _a[_i]; + addMemberForKeyType(getLiteralTypeFromProperty(prop, include)); + } + if (modifiersType.flags & 1 /* Any */ || getIndexInfoOfType(modifiersType, 0 /* String */)) { + addMemberForKeyType(stringType); + } + if (!keyofStringsOnly && getIndexInfoOfType(modifiersType, 1 /* Number */)) { + addMemberForKeyType(numberType); + } + } + else { + forEachType(getLowerBoundOfKeyType(constraintType), addMemberForKeyType); + } + setStructuredTypeMembers(type, members, ts.emptyArray, ts.emptyArray, stringIndexInfo, numberIndexInfo); + function addMemberForKeyType(t) { + // Create a mapper from T to the current iteration type constituent. Then, if the + // mapped type is itself an instantiated type, combine the iteration mapper with the + // instantiation mapper. + var templateMapper = appendTypeMapping(type.mapper, typeParameter, t); + // If the current iteration type constituent is a string literal type, create a property. + // Otherwise, for type string create a string index signature. + if (isTypeUsableAsPropertyName(t)) { + var propName = getPropertyNameFromType(t); + var modifiersProp = getPropertyOfType(modifiersType, propName); + var isOptional = !!(templateModifiers & 4 /* IncludeOptional */ || + !(templateModifiers & 8 /* ExcludeOptional */) && modifiersProp && modifiersProp.flags & 16777216 /* Optional */); + var isReadonly = !!(templateModifiers & 1 /* IncludeReadonly */ || + !(templateModifiers & 2 /* ExcludeReadonly */) && modifiersProp && isReadonlySymbol(modifiersProp)); + var stripOptional = strictNullChecks && !isOptional && modifiersProp && modifiersProp.flags & 16777216 /* Optional */; + var prop = createSymbol(4 /* Property */ | (isOptional ? 16777216 /* Optional */ : 0), propName, 262144 /* Mapped */ | (isReadonly ? 8 /* Readonly */ : 0) | (stripOptional ? 524288 /* StripOptional */ : 0)); + prop.mappedType = type; + prop.mapper = templateMapper; + if (modifiersProp) { + prop.syntheticOrigin = modifiersProp; + prop.declarations = modifiersProp.declarations; + } + prop.nameType = t; + members.set(propName, prop); + } + else if (t.flags & (1 /* Any */ | 4 /* String */ | 8 /* Number */ | 32 /* Enum */)) { + var propType = instantiateType(templateType, templateMapper); + if (t.flags & (1 /* Any */ | 4 /* String */)) { + stringIndexInfo = createIndexInfo(propType, !!(templateModifiers & 1 /* IncludeReadonly */)); + } + else { + numberIndexInfo = createIndexInfo(numberIndexInfo ? getUnionType([numberIndexInfo.type, propType]) : propType, !!(templateModifiers & 1 /* IncludeReadonly */)); + } + } + } + } + function getTypeOfMappedSymbol(symbol) { + if (!symbol.type) { + if (!pushTypeResolution(symbol, 0 /* Type */)) { + return errorType; + } + var templateType = getTemplateTypeFromMappedType(symbol.mappedType.target || symbol.mappedType); + var propType = instantiateType(templateType, symbol.mapper); + // When creating an optional property in strictNullChecks mode, if 'undefined' isn't assignable to the + // type, we include 'undefined' in the type. Similarly, when creating a non-optional property in strictNullChecks + // mode, if the underlying property is optional we remove 'undefined' from the type. + var type = strictNullChecks && symbol.flags & 16777216 /* Optional */ && !maybeTypeOfKind(propType, 32768 /* Undefined */ | 16384 /* Void */) ? getOptionalType(propType) : + symbol.checkFlags & 524288 /* StripOptional */ ? getTypeWithFacts(propType, 524288 /* NEUndefined */) : + propType; + if (!popTypeResolution()) { + error(currentNode, ts.Diagnostics.Type_of_property_0_circularly_references_itself_in_mapped_type_1, symbolToString(symbol), typeToString(symbol.mappedType)); + type = errorType; + } + symbol.type = type; + symbol.mapper = undefined; + } + return symbol.type; + } + function getTypeParameterFromMappedType(type) { + return type.typeParameter || + (type.typeParameter = getDeclaredTypeOfTypeParameter(getSymbolOfNode(type.declaration.typeParameter))); + } + function getConstraintTypeFromMappedType(type) { + return type.constraintType || + (type.constraintType = getConstraintOfTypeParameter(getTypeParameterFromMappedType(type)) || errorType); + } + function getTemplateTypeFromMappedType(type) { + return type.templateType || + (type.templateType = type.declaration.type ? + instantiateType(addOptionality(getTypeFromTypeNode(type.declaration.type), !!(getMappedTypeModifiers(type) & 4 /* IncludeOptional */)), type.mapper) : + errorType); + } + function getConstraintDeclarationForMappedType(type) { + return ts.getEffectiveConstraintOfTypeParameter(type.declaration.typeParameter); + } + function isMappedTypeWithKeyofConstraintDeclaration(type) { + var constraintDeclaration = getConstraintDeclarationForMappedType(type); // TODO: GH#18217 + return constraintDeclaration.kind === 184 /* TypeOperator */ && + constraintDeclaration.operator === 134 /* KeyOfKeyword */; + } + function getModifiersTypeFromMappedType(type) { + if (!type.modifiersType) { + if (isMappedTypeWithKeyofConstraintDeclaration(type)) { + // If the constraint declaration is a 'keyof T' node, the modifiers type is T. We check + // AST nodes here because, when T is a non-generic type, the logic below eagerly resolves + // 'keyof T' to a literal union type and we can't recover T from that type. + type.modifiersType = instantiateType(getTypeFromTypeNode(getConstraintDeclarationForMappedType(type).type), type.mapper); + } + else { + // Otherwise, get the declared constraint type, and if the constraint type is a type parameter, + // get the constraint of that type parameter. If the resulting type is an indexed type 'keyof T', + // the modifiers type is T. Otherwise, the modifiers type is unknown. + var declaredType = getTypeFromMappedTypeNode(type.declaration); + var constraint = getConstraintTypeFromMappedType(declaredType); + var extendedConstraint = constraint && constraint.flags & 262144 /* TypeParameter */ ? getConstraintOfTypeParameter(constraint) : constraint; + type.modifiersType = extendedConstraint && extendedConstraint.flags & 4194304 /* Index */ ? instantiateType(extendedConstraint.type, type.mapper) : unknownType; + } + } + return type.modifiersType; + } + function getMappedTypeModifiers(type) { + var declaration = type.declaration; + return (declaration.readonlyToken ? declaration.readonlyToken.kind === 40 /* MinusToken */ ? 2 /* ExcludeReadonly */ : 1 /* IncludeReadonly */ : 0) | + (declaration.questionToken ? declaration.questionToken.kind === 40 /* MinusToken */ ? 8 /* ExcludeOptional */ : 4 /* IncludeOptional */ : 0); + } + function getMappedTypeOptionality(type) { + var modifiers = getMappedTypeModifiers(type); + return modifiers & 8 /* ExcludeOptional */ ? -1 : modifiers & 4 /* IncludeOptional */ ? 1 : 0; + } + function getCombinedMappedTypeOptionality(type) { + var optionality = getMappedTypeOptionality(type); + var modifiersType = getModifiersTypeFromMappedType(type); + return optionality || (isGenericMappedType(modifiersType) ? getMappedTypeOptionality(modifiersType) : 0); + } + function isPartialMappedType(type) { + return !!(ts.getObjectFlags(type) & 32 /* Mapped */ && getMappedTypeModifiers(type) & 4 /* IncludeOptional */); + } + function isGenericMappedType(type) { + return !!(ts.getObjectFlags(type) & 32 /* Mapped */) && isGenericIndexType(getConstraintTypeFromMappedType(type)); + } + function resolveStructuredTypeMembers(type) { + if (!type.members) { + if (type.flags & 524288 /* Object */) { + if (type.objectFlags & 4 /* Reference */) { + resolveTypeReferenceMembers(type); + } + else if (type.objectFlags & 3 /* ClassOrInterface */) { + resolveClassOrInterfaceMembers(type); + } + else if (type.objectFlags & 2048 /* ReverseMapped */) { + resolveReverseMappedTypeMembers(type); + } + else if (type.objectFlags & 16 /* Anonymous */) { + resolveAnonymousTypeMembers(type); + } + else if (type.objectFlags & 32 /* Mapped */) { + resolveMappedTypeMembers(type); + } + } + else if (type.flags & 1048576 /* Union */) { + resolveUnionTypeMembers(type); + } + else if (type.flags & 2097152 /* Intersection */) { + resolveIntersectionTypeMembers(type); + } + } + return type; + } + /** Return properties of an object type or an empty array for other types */ + function getPropertiesOfObjectType(type) { + if (type.flags & 524288 /* Object */) { + return resolveStructuredTypeMembers(type).properties; + } + return ts.emptyArray; + } + /** If the given type is an object type and that type has a property by the given name, + * return the symbol for that property. Otherwise return undefined. + */ + function getPropertyOfObjectType(type, name) { + if (type.flags & 524288 /* Object */) { + var resolved = resolveStructuredTypeMembers(type); + var symbol = resolved.members.get(name); + if (symbol && symbolIsValue(symbol)) { + return symbol; + } + } + } + function getPropertiesOfUnionOrIntersectionType(type) { + if (!type.resolvedProperties) { + var members = ts.createSymbolTable(); + for (var _i = 0, _a = type.types; _i < _a.length; _i++) { + var current = _a[_i]; + for (var _b = 0, _c = getPropertiesOfType(current); _b < _c.length; _b++) { + var prop = _c[_b]; + if (!members.has(prop.escapedName)) { + var combinedProp = getPropertyOfUnionOrIntersectionType(type, prop.escapedName); + if (combinedProp) { + members.set(prop.escapedName, combinedProp); + } + } + } + // The properties of a union type are those that are present in all constituent types, so + // we only need to check the properties of the first type without index signature + if (type.flags & 1048576 /* Union */ && !getIndexInfoOfType(current, 0 /* String */) && !getIndexInfoOfType(current, 1 /* Number */)) { + break; + } + } + type.resolvedProperties = getNamedMembers(members); + } + return type.resolvedProperties; + } + function getPropertiesOfType(type) { + type = getReducedApparentType(type); + return type.flags & 3145728 /* UnionOrIntersection */ ? + getPropertiesOfUnionOrIntersectionType(type) : + getPropertiesOfObjectType(type); + } + function isTypeInvalidDueToUnionDiscriminant(contextualType, obj) { + var list = obj.properties; + return list.some(function (property) { + var nameType = property.name && getLiteralTypeFromPropertyName(property.name); + var name = nameType && isTypeUsableAsPropertyName(nameType) ? getPropertyNameFromType(nameType) : undefined; + var expected = name === undefined ? undefined : getTypeOfPropertyOfType(contextualType, name); + return !!expected && isLiteralType(expected) && !isTypeAssignableTo(getTypeOfNode(property), expected); + }); + } + function getAllPossiblePropertiesOfTypes(types) { + var unionType = getUnionType(types); + if (!(unionType.flags & 1048576 /* Union */)) { + return getAugmentedPropertiesOfType(unionType); + } + var props = ts.createSymbolTable(); + for (var _i = 0, types_4 = types; _i < types_4.length; _i++) { + var memberType = types_4[_i]; + for (var _a = 0, _b = getAugmentedPropertiesOfType(memberType); _a < _b.length; _a++) { + var escapedName = _b[_a].escapedName; + if (!props.has(escapedName)) { + var prop = createUnionOrIntersectionProperty(unionType, escapedName); + // May be undefined if the property is private + if (prop) + props.set(escapedName, prop); + } + } + } + return ts.arrayFrom(props.values()); + } + function getConstraintOfType(type) { + return type.flags & 262144 /* TypeParameter */ ? getConstraintOfTypeParameter(type) : + type.flags & 8388608 /* IndexedAccess */ ? getConstraintOfIndexedAccess(type) : + type.flags & 16777216 /* Conditional */ ? getConstraintOfConditionalType(type) : + getBaseConstraintOfType(type); + } + function getConstraintOfTypeParameter(typeParameter) { + return hasNonCircularBaseConstraint(typeParameter) ? getConstraintFromTypeParameter(typeParameter) : undefined; + } + function getConstraintOfIndexedAccess(type) { + return hasNonCircularBaseConstraint(type) ? getConstraintFromIndexedAccess(type) : undefined; + } + function getSimplifiedTypeOrConstraint(type) { + var simplified = getSimplifiedType(type, /*writing*/ false); + return simplified !== type ? simplified : getConstraintOfType(type); + } + function getConstraintFromIndexedAccess(type) { + var indexConstraint = getSimplifiedTypeOrConstraint(type.indexType); + if (indexConstraint && indexConstraint !== type.indexType) { + var indexedAccess = getIndexedAccessTypeOrUndefined(type.objectType, indexConstraint); + if (indexedAccess) { + return indexedAccess; + } + } + var objectConstraint = getSimplifiedTypeOrConstraint(type.objectType); + if (objectConstraint && objectConstraint !== type.objectType) { + return getIndexedAccessTypeOrUndefined(objectConstraint, type.indexType); + } + return undefined; + } + function getDefaultConstraintOfConditionalType(type) { + if (!type.resolvedDefaultConstraint) { + // An `any` branch of a conditional type would normally be viral - specifically, without special handling here, + // a conditional type with a single branch of type `any` would be assignable to anything, since it's constraint would simplify to + // just `any`. This result is _usually_ unwanted - so instead here we elide an `any` branch from the constraint type, + // in effect treating `any` like `never` rather than `unknown` in this location. + var trueConstraint = getInferredTrueTypeFromConditionalType(type); + var falseConstraint = getFalseTypeFromConditionalType(type); + type.resolvedDefaultConstraint = isTypeAny(trueConstraint) ? falseConstraint : isTypeAny(falseConstraint) ? trueConstraint : getUnionType([trueConstraint, falseConstraint]); + } + return type.resolvedDefaultConstraint; + } + function getConstraintOfDistributiveConditionalType(type) { + // Check if we have a conditional type of the form 'T extends U ? X : Y', where T is a constrained + // type parameter. If so, create an instantiation of the conditional type where T is replaced + // with its constraint. We do this because if the constraint is a union type it will be distributed + // over the conditional type and possibly reduced. For example, 'T extends undefined ? never : T' + // removes 'undefined' from T. + // We skip returning a distributive constraint for a restrictive instantiation of a conditional type + // as the constraint for all type params (check type included) have been replace with `unknown`, which + // is going to produce even more false positive/negative results than the distribute constraint already does. + // Please note: the distributive constraint is a kludge for emulating what a negated type could to do filter + // a union - once negated types exist and are applied to the conditional false branch, this "constraint" + // likely doesn't need to exist. + if (type.root.isDistributive && type.restrictiveInstantiation !== type) { + var simplified = getSimplifiedType(type.checkType, /*writing*/ false); + var constraint = simplified === type.checkType ? getConstraintOfType(simplified) : simplified; + if (constraint && constraint !== type.checkType) { + var instantiated = getConditionalTypeInstantiation(type, prependTypeMapping(type.root.checkType, constraint, type.mapper)); + if (!(instantiated.flags & 131072 /* Never */)) { + return instantiated; + } + } + } + return undefined; + } + function getConstraintFromConditionalType(type) { + return getConstraintOfDistributiveConditionalType(type) || getDefaultConstraintOfConditionalType(type); + } + function getConstraintOfConditionalType(type) { + return hasNonCircularBaseConstraint(type) ? getConstraintFromConditionalType(type) : undefined; + } + function getEffectiveConstraintOfIntersection(types, targetIsUnion) { + var constraints; + var hasDisjointDomainType = false; + for (var _i = 0, types_5 = types; _i < types_5.length; _i++) { + var t = types_5[_i]; + if (t.flags & 63176704 /* Instantiable */) { + // We keep following constraints as long as we have an instantiable type that is known + // not to be circular or infinite (hence we stop on index access types). + var constraint = getConstraintOfType(t); + while (constraint && constraint.flags & (262144 /* TypeParameter */ | 4194304 /* Index */ | 16777216 /* Conditional */)) { + constraint = getConstraintOfType(constraint); + } + if (constraint) { + constraints = ts.append(constraints, constraint); + if (targetIsUnion) { + constraints = ts.append(constraints, t); + } + } + } + else if (t.flags & 67238908 /* DisjointDomains */) { + hasDisjointDomainType = true; + } + } + // If the target is a union type or if we are intersecting with types belonging to one of the + // disjoint domains, we may end up producing a constraint that hasn't been examined before. + if (constraints && (targetIsUnion || hasDisjointDomainType)) { + if (hasDisjointDomainType) { + // We add any types belong to one of the disjoint domains because they might cause the final + // intersection operation to reduce the union constraints. + for (var _a = 0, types_6 = types; _a < types_6.length; _a++) { + var t = types_6[_a]; + if (t.flags & 67238908 /* DisjointDomains */) { + constraints = ts.append(constraints, t); + } + } + } + return getIntersectionType(constraints); + } + return undefined; + } + function getBaseConstraintOfType(type) { + if (type.flags & (58982400 /* InstantiableNonPrimitive */ | 3145728 /* UnionOrIntersection */)) { + var constraint = getResolvedBaseConstraint(type); + return constraint !== noConstraintType && constraint !== circularConstraintType ? constraint : undefined; + } + return type.flags & 4194304 /* Index */ ? keyofConstraintType : undefined; + } + /** + * This is similar to `getBaseConstraintOfType` except it returns the input type if there's no base constraint, instead of `undefined` + * It also doesn't map indexes to `string`, as where this is used this would be unneeded (and likely undesirable) + */ + function getBaseConstraintOrType(type) { + return getBaseConstraintOfType(type) || type; + } + function hasNonCircularBaseConstraint(type) { + return getResolvedBaseConstraint(type) !== circularConstraintType; + } + /** + * Return the resolved base constraint of a type variable. The noConstraintType singleton is returned if the + * type variable has no constraint, and the circularConstraintType singleton is returned if the constraint + * circularly references the type variable. + */ + function getResolvedBaseConstraint(type) { + var nonTerminating = false; + return type.resolvedBaseConstraint || + (type.resolvedBaseConstraint = getTypeWithThisArgument(getImmediateBaseConstraint(type), type)); + function getImmediateBaseConstraint(t) { + if (!t.immediateBaseConstraint) { + if (!pushTypeResolution(t, 4 /* ImmediateBaseConstraint */)) { + return circularConstraintType; + } + if (constraintDepth >= 50) { + // We have reached 50 recursive invocations of getImmediateBaseConstraint and there is a + // very high likelihood we're dealing with an infinite generic type that perpetually generates + // new type identities as we descend into it. We stop the recursion here and mark this type + // and the outer types as having circular constraints. + error(currentNode, ts.Diagnostics.Type_instantiation_is_excessively_deep_and_possibly_infinite); + nonTerminating = true; + return t.immediateBaseConstraint = noConstraintType; + } + constraintDepth++; + var result = computeBaseConstraint(getSimplifiedType(t, /*writing*/ false)); + constraintDepth--; + if (!popTypeResolution()) { + if (t.flags & 262144 /* TypeParameter */) { + var errorNode = getConstraintDeclaration(t); + if (errorNode) { + var diagnostic = error(errorNode, ts.Diagnostics.Type_parameter_0_has_a_circular_constraint, typeToString(t)); + if (currentNode && !ts.isNodeDescendantOf(errorNode, currentNode) && !ts.isNodeDescendantOf(currentNode, errorNode)) { + ts.addRelatedInfo(diagnostic, ts.createDiagnosticForNode(currentNode, ts.Diagnostics.Circularity_originates_in_type_at_this_location)); + } + } + } + result = circularConstraintType; + } + if (nonTerminating) { + result = circularConstraintType; + } + t.immediateBaseConstraint = result || noConstraintType; + } + return t.immediateBaseConstraint; + } + function getBaseConstraint(t) { + var c = getImmediateBaseConstraint(t); + return c !== noConstraintType && c !== circularConstraintType ? c : undefined; + } + function computeBaseConstraint(t) { + if (t.flags & 262144 /* TypeParameter */) { + var constraint = getConstraintFromTypeParameter(t); + return t.isThisType || !constraint ? + constraint : + getBaseConstraint(constraint); + } + if (t.flags & 3145728 /* UnionOrIntersection */) { + var types = t.types; + var baseTypes = []; + for (var _i = 0, types_7 = types; _i < types_7.length; _i++) { + var type_2 = types_7[_i]; + var baseType = getBaseConstraint(type_2); + if (baseType) { + baseTypes.push(baseType); + } + } + return t.flags & 1048576 /* Union */ && baseTypes.length === types.length ? getUnionType(baseTypes) : + t.flags & 2097152 /* Intersection */ && baseTypes.length ? getIntersectionType(baseTypes) : + undefined; + } + if (t.flags & 4194304 /* Index */) { + return keyofConstraintType; + } + if (t.flags & 8388608 /* IndexedAccess */) { + var baseObjectType = getBaseConstraint(t.objectType); + var baseIndexType = getBaseConstraint(t.indexType); + var baseIndexedAccess = baseObjectType && baseIndexType && getIndexedAccessTypeOrUndefined(baseObjectType, baseIndexType); + return baseIndexedAccess && getBaseConstraint(baseIndexedAccess); + } + if (t.flags & 16777216 /* Conditional */) { + var constraint = getConstraintFromConditionalType(t); + constraintDepth++; // Penalize repeating conditional types (this captures the recursion within getConstraintFromConditionalType and carries it forward) + var result = constraint && getBaseConstraint(constraint); + constraintDepth--; + return result; + } + if (t.flags & 33554432 /* Substitution */) { + return getBaseConstraint(t.substitute); + } + return t; + } + } + function getApparentTypeOfIntersectionType(type) { + return type.resolvedApparentType || (type.resolvedApparentType = getTypeWithThisArgument(type, type, /*apparentType*/ true)); + } + function getResolvedTypeParameterDefault(typeParameter) { + if (!typeParameter.default) { + if (typeParameter.target) { + var targetDefault = getResolvedTypeParameterDefault(typeParameter.target); + typeParameter.default = targetDefault ? instantiateType(targetDefault, typeParameter.mapper) : noConstraintType; + } + else { + // To block recursion, set the initial value to the resolvingDefaultType. + typeParameter.default = resolvingDefaultType; + var defaultDeclaration = typeParameter.symbol && ts.forEach(typeParameter.symbol.declarations, function (decl) { return ts.isTypeParameterDeclaration(decl) && decl.default; }); + var defaultType = defaultDeclaration ? getTypeFromTypeNode(defaultDeclaration) : noConstraintType; + if (typeParameter.default === resolvingDefaultType) { + // If we have not been called recursively, set the correct default type. + typeParameter.default = defaultType; + } + } + } + else if (typeParameter.default === resolvingDefaultType) { + // If we are called recursively for this type parameter, mark the default as circular. + typeParameter.default = circularConstraintType; + } + return typeParameter.default; + } + /** + * Gets the default type for a type parameter. + * + * If the type parameter is the result of an instantiation, this gets the instantiated + * default type of its target. If the type parameter has no default type or the default is + * circular, `undefined` is returned. + */ + function getDefaultFromTypeParameter(typeParameter) { + var defaultType = getResolvedTypeParameterDefault(typeParameter); + return defaultType !== noConstraintType && defaultType !== circularConstraintType ? defaultType : undefined; + } + function hasNonCircularTypeParameterDefault(typeParameter) { + return getResolvedTypeParameterDefault(typeParameter) !== circularConstraintType; + } + /** + * Indicates whether the declaration of a typeParameter has a default type. + */ + function hasTypeParameterDefault(typeParameter) { + return !!(typeParameter.symbol && ts.forEach(typeParameter.symbol.declarations, function (decl) { return ts.isTypeParameterDeclaration(decl) && decl.default; })); + } + function getApparentTypeOfMappedType(type) { + return type.resolvedApparentType || (type.resolvedApparentType = getResolvedApparentTypeOfMappedType(type)); + } + function getResolvedApparentTypeOfMappedType(type) { + var typeVariable = getHomomorphicTypeVariable(type); + if (typeVariable) { + var constraint = getConstraintOfTypeParameter(typeVariable); + if (constraint && (isArrayType(constraint) || isTupleType(constraint))) { + return instantiateType(type, prependTypeMapping(typeVariable, constraint, type.mapper)); + } + } + return type; + } + /** + * For a type parameter, return the base constraint of the type parameter. For the string, number, + * boolean, and symbol primitive types, return the corresponding object types. Otherwise return the + * type itself. + */ + function getApparentType(type) { + var t = type.flags & 63176704 /* Instantiable */ ? getBaseConstraintOfType(type) || unknownType : type; + return ts.getObjectFlags(t) & 32 /* Mapped */ ? getApparentTypeOfMappedType(t) : + t.flags & 2097152 /* Intersection */ ? getApparentTypeOfIntersectionType(t) : + t.flags & 132 /* StringLike */ ? globalStringType : + t.flags & 296 /* NumberLike */ ? globalNumberType : + t.flags & 2112 /* BigIntLike */ ? getGlobalBigIntType(/*reportErrors*/ languageVersion >= 7 /* ES2020 */) : + t.flags & 528 /* BooleanLike */ ? globalBooleanType : + t.flags & 12288 /* ESSymbolLike */ ? getGlobalESSymbolType(/*reportErrors*/ languageVersion >= 2 /* ES2015 */) : + t.flags & 67108864 /* NonPrimitive */ ? emptyObjectType : + t.flags & 4194304 /* Index */ ? keyofConstraintType : + t.flags & 2 /* Unknown */ && !strictNullChecks ? emptyObjectType : + t; + } + function getReducedApparentType(type) { + // Since getApparentType may return a non-reduced union or intersection type, we need to perform + // type reduction both before and after obtaining the apparent type. For example, given a type parameter + // 'T extends A | B', the type 'T & X' becomes 'A & X | B & X' after obtaining the apparent type, and + // that type may need futher reduction to remove empty intersections. + return getReducedType(getApparentType(getReducedType(type))); + } + function createUnionOrIntersectionProperty(containingType, name) { + var singleProp; + var propSet; + var indexTypes; + var isUnion = containingType.flags & 1048576 /* Union */; + // Flags we want to propagate to the result if they exist in all source symbols + var optionalFlag = isUnion ? 0 /* None */ : 16777216 /* Optional */; + var syntheticFlag = 4 /* SyntheticMethod */; + var checkFlags = 0; + for (var _i = 0, _a = containingType.types; _i < _a.length; _i++) { + var current = _a[_i]; + var type = getApparentType(current); + if (!(type === errorType || type.flags & 131072 /* Never */)) { + var prop = getPropertyOfType(type, name); + var modifiers = prop ? ts.getDeclarationModifierFlagsFromSymbol(prop) : 0; + if (prop) { + if (isUnion) { + optionalFlag |= (prop.flags & 16777216 /* Optional */); + } + else { + optionalFlag &= prop.flags; + } + if (!singleProp) { + singleProp = prop; + } + else if (prop !== singleProp) { + if (!propSet) { + propSet = ts.createMap(); + propSet.set("" + getSymbolId(singleProp), singleProp); + } + var id = "" + getSymbolId(prop); + if (!propSet.has(id)) { + propSet.set(id, prop); + } + } + checkFlags |= (isReadonlySymbol(prop) ? 8 /* Readonly */ : 0) | + (!(modifiers & 24 /* NonPublicAccessibilityModifier */) ? 256 /* ContainsPublic */ : 0) | + (modifiers & 16 /* Protected */ ? 512 /* ContainsProtected */ : 0) | + (modifiers & 8 /* Private */ ? 1024 /* ContainsPrivate */ : 0) | + (modifiers & 32 /* Static */ ? 2048 /* ContainsStatic */ : 0); + if (!isPrototypeProperty(prop)) { + syntheticFlag = 2 /* SyntheticProperty */; + } + } + else if (isUnion) { + var indexInfo = !isLateBoundName(name) && (isNumericLiteralName(name) && getIndexInfoOfType(type, 1 /* Number */) || getIndexInfoOfType(type, 0 /* String */)); + if (indexInfo) { + checkFlags |= 32 /* WritePartial */ | (indexInfo.isReadonly ? 8 /* Readonly */ : 0); + indexTypes = ts.append(indexTypes, isTupleType(type) ? getRestTypeOfTupleType(type) || undefinedType : indexInfo.type); + } + else if (isObjectLiteralType(type)) { + checkFlags |= 32 /* WritePartial */; + indexTypes = ts.append(indexTypes, undefinedType); + } + else { + checkFlags |= 16 /* ReadPartial */; + } + } + } + } + if (!singleProp || isUnion && (propSet || checkFlags & 48 /* Partial */) && checkFlags & (1024 /* ContainsPrivate */ | 512 /* ContainsProtected */)) { + // No property was found, or, in a union, a property has a private or protected declaration in one + // constituent, but is missing or has a different declaration in another constituent. + return undefined; + } + if (!propSet && !(checkFlags & 16 /* ReadPartial */) && !indexTypes) { + return singleProp; + } + var props = propSet ? ts.arrayFrom(propSet.values()) : [singleProp]; + var declarations; + var firstType; + var nameType; + var propTypes = []; + var firstValueDeclaration; + var hasNonUniformValueDeclaration = false; + for (var _b = 0, props_1 = props; _b < props_1.length; _b++) { + var prop = props_1[_b]; + if (!firstValueDeclaration) { + firstValueDeclaration = prop.valueDeclaration; + } + else if (prop.valueDeclaration && prop.valueDeclaration !== firstValueDeclaration) { + hasNonUniformValueDeclaration = true; + } + declarations = ts.addRange(declarations, prop.declarations); + var type = getTypeOfSymbol(prop); + if (!firstType) { + firstType = type; + nameType = getSymbolLinks(prop).nameType; + } + else if (type !== firstType) { + checkFlags |= 64 /* HasNonUniformType */; + } + if (isLiteralType(type)) { + checkFlags |= 128 /* HasLiteralType */; + } + if (type.flags & 131072 /* Never */) { + checkFlags |= 131072 /* HasNeverType */; + } + propTypes.push(type); + } + ts.addRange(propTypes, indexTypes); + var result = createSymbol(4 /* Property */ | optionalFlag, name, syntheticFlag | checkFlags); + result.containingType = containingType; + if (!hasNonUniformValueDeclaration && firstValueDeclaration) { + result.valueDeclaration = firstValueDeclaration; + // Inherit information about parent type. + if (firstValueDeclaration.symbol.parent) { + result.parent = firstValueDeclaration.symbol.parent; + } + } + result.declarations = declarations; + result.nameType = nameType; + if (propTypes.length > 2) { + // When `propTypes` has the potential to explode in size when normalized, defer normalization until absolutely needed + result.checkFlags |= 65536 /* DeferredType */; + result.deferralParent = containingType; + result.deferralConstituents = propTypes; + } + else { + result.type = isUnion ? getUnionType(propTypes) : getIntersectionType(propTypes); + } + return result; + } + // Return the symbol for a given property in a union or intersection type, or undefined if the property + // does not exist in any constituent type. Note that the returned property may only be present in some + // constituents, in which case the isPartial flag is set when the containing type is union type. We need + // these partial properties when identifying discriminant properties, but otherwise they are filtered out + // and do not appear to be present in the union type. + function getUnionOrIntersectionProperty(type, name) { + var properties = type.propertyCache || (type.propertyCache = ts.createSymbolTable()); + var property = properties.get(name); + if (!property) { + property = createUnionOrIntersectionProperty(type, name); + if (property) { + properties.set(name, property); + } + } + return property; + } + function getPropertyOfUnionOrIntersectionType(type, name) { + var property = getUnionOrIntersectionProperty(type, name); + // We need to filter out partial properties in union types + return property && !(ts.getCheckFlags(property) & 16 /* ReadPartial */) ? property : undefined; + } + /** + * Return the reduced form of the given type. For a union type, it is a union of the normalized constituent types. + * For an intersection of types containing one or more mututally exclusive discriminant properties, it is 'never'. + * For all other types, it is simply the type itself. Discriminant properties are considered mutually exclusive when + * no constituent property has type 'never', but the intersection of the constituent property types is 'never'. + */ + function getReducedType(type) { + if (type.flags & 1048576 /* Union */ && type.objectFlags & 268435456 /* ContainsIntersections */) { + return type.resolvedReducedType || (type.resolvedReducedType = getReducedUnionType(type)); + } + else if (type.flags & 2097152 /* Intersection */) { + if (!(type.objectFlags & 268435456 /* IsNeverIntersectionComputed */)) { + type.objectFlags |= 268435456 /* IsNeverIntersectionComputed */ | + (ts.some(getPropertiesOfUnionOrIntersectionType(type), isNeverReducedProperty) ? 536870912 /* IsNeverIntersection */ : 0); + } + return type.objectFlags & 536870912 /* IsNeverIntersection */ ? neverType : type; + } + return type; + } + function getReducedUnionType(unionType) { + var reducedTypes = ts.sameMap(unionType.types, getReducedType); + if (reducedTypes === unionType.types) { + return unionType; + } + var reduced = getUnionType(reducedTypes); + if (reduced.flags & 1048576 /* Union */) { + reduced.resolvedReducedType = reduced; + } + return reduced; + } + function isNeverReducedProperty(prop) { + return isDiscriminantWithNeverType(prop) || isConflictingPrivateProperty(prop); + } + function isDiscriminantWithNeverType(prop) { + // Return true for a synthetic non-optional property with non-uniform types, where at least one is + // a literal type and none is never, that reduces to never. + return !(prop.flags & 16777216 /* Optional */) && + (ts.getCheckFlags(prop) & (192 /* Discriminant */ | 131072 /* HasNeverType */)) === 192 /* Discriminant */ && + !!(getTypeOfSymbol(prop).flags & 131072 /* Never */); + } + function isConflictingPrivateProperty(prop) { + // Return true for a synthetic property with multiple declarations, at least one of which is private. + return !prop.valueDeclaration && !!(ts.getCheckFlags(prop) & 1024 /* ContainsPrivate */); + } + function elaborateNeverIntersection(errorInfo, type) { + if (ts.getObjectFlags(type) & 536870912 /* IsNeverIntersection */) { + var neverProp = ts.find(getPropertiesOfUnionOrIntersectionType(type), isDiscriminantWithNeverType); + if (neverProp) { + return ts.chainDiagnosticMessages(errorInfo, ts.Diagnostics.The_intersection_0_was_reduced_to_never_because_property_1_has_conflicting_types_in_some_constituents, typeToString(type, /*enclosingDeclaration*/ undefined, 536870912 /* NoTypeReduction */), symbolToString(neverProp)); + } + var privateProp = ts.find(getPropertiesOfUnionOrIntersectionType(type), isConflictingPrivateProperty); + if (privateProp) { + return ts.chainDiagnosticMessages(errorInfo, ts.Diagnostics.The_intersection_0_was_reduced_to_never_because_property_1_exists_in_multiple_constituents_and_is_private_in_some, typeToString(type, /*enclosingDeclaration*/ undefined, 536870912 /* NoTypeReduction */), symbolToString(privateProp)); + } + } + return errorInfo; + } + /** + * Return the symbol for the property with the given name in the given type. Creates synthetic union properties when + * necessary, maps primitive types and type parameters are to their apparent types, and augments with properties from + * Object and Function as appropriate. + * + * @param type a type to look up property from + * @param name a name of property to look up in a given type + */ + function getPropertyOfType(type, name) { + type = getReducedApparentType(type); + if (type.flags & 524288 /* Object */) { + var resolved = resolveStructuredTypeMembers(type); + var symbol = resolved.members.get(name); + if (symbol && symbolIsValue(symbol)) { + return symbol; + } + var functionType = resolved === anyFunctionType ? globalFunctionType : + resolved.callSignatures.length ? globalCallableFunctionType : + resolved.constructSignatures.length ? globalNewableFunctionType : + undefined; + if (functionType) { + var symbol_1 = getPropertyOfObjectType(functionType, name); + if (symbol_1) { + return symbol_1; + } + } + return getPropertyOfObjectType(globalObjectType, name); + } + if (type.flags & 3145728 /* UnionOrIntersection */) { + return getPropertyOfUnionOrIntersectionType(type, name); + } + return undefined; + } + function getSignaturesOfStructuredType(type, kind) { + if (type.flags & 3670016 /* StructuredType */) { + var resolved = resolveStructuredTypeMembers(type); + return kind === 0 /* Call */ ? resolved.callSignatures : resolved.constructSignatures; + } + return ts.emptyArray; + } + /** + * Return the signatures of the given kind in the given type. Creates synthetic union signatures when necessary and + * maps primitive types and type parameters are to their apparent types. + */ + function getSignaturesOfType(type, kind) { + return getSignaturesOfStructuredType(getReducedApparentType(type), kind); + } + function getIndexInfoOfStructuredType(type, kind) { + if (type.flags & 3670016 /* StructuredType */) { + var resolved = resolveStructuredTypeMembers(type); + return kind === 0 /* String */ ? resolved.stringIndexInfo : resolved.numberIndexInfo; + } + } + function getIndexTypeOfStructuredType(type, kind) { + var info = getIndexInfoOfStructuredType(type, kind); + return info && info.type; + } + // Return the indexing info of the given kind in the given type. Creates synthetic union index types when necessary and + // maps primitive types and type parameters are to their apparent types. + function getIndexInfoOfType(type, kind) { + return getIndexInfoOfStructuredType(getReducedApparentType(type), kind); + } + // Return the index type of the given kind in the given type. Creates synthetic union index types when necessary and + // maps primitive types and type parameters are to their apparent types. + function getIndexTypeOfType(type, kind) { + return getIndexTypeOfStructuredType(getReducedApparentType(type), kind); + } + function getImplicitIndexTypeOfType(type, kind) { + if (isObjectTypeWithInferableIndex(type)) { + var propTypes = []; + for (var _i = 0, _a = getPropertiesOfType(type); _i < _a.length; _i++) { + var prop = _a[_i]; + if (kind === 0 /* String */ || isNumericLiteralName(prop.escapedName)) { + propTypes.push(getTypeOfSymbol(prop)); + } + } + if (kind === 0 /* String */) { + ts.append(propTypes, getIndexTypeOfType(type, 1 /* Number */)); + } + if (propTypes.length) { + return getUnionType(propTypes); + } + } + return undefined; + } + // Return list of type parameters with duplicates removed (duplicate identifier errors are generated in the actual + // type checking functions). + function getTypeParametersFromDeclaration(declaration) { + var result; + for (var _i = 0, _a = ts.getEffectiveTypeParameterDeclarations(declaration); _i < _a.length; _i++) { + var node = _a[_i]; + result = ts.appendIfUnique(result, getDeclaredTypeOfTypeParameter(node.symbol)); + } + return result; + } + function symbolsToArray(symbols) { + var result = []; + symbols.forEach(function (symbol, id) { + if (!isReservedMemberName(id)) { + result.push(symbol); + } + }); + return result; + } + function isJSDocOptionalParameter(node) { + return ts.isInJSFile(node) && ( + // node.type should only be a JSDocOptionalType when node is a parameter of a JSDocFunctionType + node.type && node.type.kind === 299 /* JSDocOptionalType */ + || ts.getJSDocParameterTags(node).some(function (_a) { + var isBracketed = _a.isBracketed, typeExpression = _a.typeExpression; + return isBracketed || !!typeExpression && typeExpression.type.kind === 299 /* JSDocOptionalType */; + })); + } + function tryFindAmbientModule(moduleName, withAugmentations) { + if (ts.isExternalModuleNameRelative(moduleName)) { + return undefined; + } + var symbol = getSymbol(globals, '"' + moduleName + '"', 512 /* ValueModule */); + // merged symbol is module declaration symbol combined with all augmentations + return symbol && withAugmentations ? getMergedSymbol(symbol) : symbol; + } + function isOptionalParameter(node) { + if (ts.hasQuestionToken(node) || isOptionalJSDocParameterTag(node) || isJSDocOptionalParameter(node)) { + return true; + } + if (node.initializer) { + var signature = getSignatureFromDeclaration(node.parent); + var parameterIndex = node.parent.parameters.indexOf(node); + ts.Debug.assert(parameterIndex >= 0); + return parameterIndex >= getMinArgumentCount(signature, /*strongArityForUntypedJS*/ true); + } + var iife = ts.getImmediatelyInvokedFunctionExpression(node.parent); + if (iife) { + return !node.type && + !node.dotDotDotToken && + node.parent.parameters.indexOf(node) >= iife.arguments.length; + } + return false; + } + function isOptionalJSDocParameterTag(node) { + if (!ts.isJSDocParameterTag(node)) { + return false; + } + var isBracketed = node.isBracketed, typeExpression = node.typeExpression; + return isBracketed || !!typeExpression && typeExpression.type.kind === 299 /* JSDocOptionalType */; + } + function createTypePredicate(kind, parameterName, parameterIndex, type) { + return { kind: kind, parameterName: parameterName, parameterIndex: parameterIndex, type: type }; + } + /** + * Gets the minimum number of type arguments needed to satisfy all non-optional type + * parameters. + */ + function getMinTypeArgumentCount(typeParameters) { + var minTypeArgumentCount = 0; + if (typeParameters) { + for (var i = 0; i < typeParameters.length; i++) { + if (!hasTypeParameterDefault(typeParameters[i])) { + minTypeArgumentCount = i + 1; + } + } + } + return minTypeArgumentCount; + } + function fillMissingTypeArguments(typeArguments, typeParameters, minTypeArgumentCount, isJavaScriptImplicitAny) { + var numTypeParameters = ts.length(typeParameters); + if (!numTypeParameters) { + return []; + } + var numTypeArguments = ts.length(typeArguments); + if (isJavaScriptImplicitAny || (numTypeArguments >= minTypeArgumentCount && numTypeArguments <= numTypeParameters)) { + var result = typeArguments ? typeArguments.slice() : []; + // Map invalid forward references in default types to the error type + for (var i = numTypeArguments; i < numTypeParameters; i++) { + result[i] = errorType; + } + var baseDefaultType = getDefaultTypeArgumentType(isJavaScriptImplicitAny); + for (var i = numTypeArguments; i < numTypeParameters; i++) { + var defaultType = getDefaultFromTypeParameter(typeParameters[i]); + if (isJavaScriptImplicitAny && defaultType && (isTypeIdenticalTo(defaultType, unknownType) || isTypeIdenticalTo(defaultType, emptyObjectType))) { + defaultType = anyType; + } + result[i] = defaultType ? instantiateType(defaultType, createTypeMapper(typeParameters, result)) : baseDefaultType; + } + result.length = typeParameters.length; + return result; + } + return typeArguments && typeArguments.slice(); + } + function getSignatureFromDeclaration(declaration) { + var links = getNodeLinks(declaration); + if (!links.resolvedSignature) { + var parameters = []; + var flags = 0 /* None */; + var minArgumentCount = 0; + var thisParameter = void 0; + var hasThisParameter = false; + var iife = ts.getImmediatelyInvokedFunctionExpression(declaration); + var isJSConstructSignature = ts.isJSDocConstructSignature(declaration); + var isUntypedSignatureInJSFile = !iife && + ts.isInJSFile(declaration) && + ts.isValueSignatureDeclaration(declaration) && + !ts.hasJSDocParameterTags(declaration) && + !ts.getJSDocType(declaration); + if (isUntypedSignatureInJSFile) { + flags |= 16 /* IsUntypedSignatureInJSFile */; + } + // If this is a JSDoc construct signature, then skip the first parameter in the + // parameter list. The first parameter represents the return type of the construct + // signature. + for (var i = isJSConstructSignature ? 1 : 0; i < declaration.parameters.length; i++) { + var param = declaration.parameters[i]; + var paramSymbol = param.symbol; + var type = ts.isJSDocParameterTag(param) ? (param.typeExpression && param.typeExpression.type) : param.type; + // Include parameter symbol instead of property symbol in the signature + if (paramSymbol && !!(paramSymbol.flags & 4 /* Property */) && !ts.isBindingPattern(param.name)) { + var resolvedSymbol = resolveName(param, paramSymbol.escapedName, 111551 /* Value */, undefined, undefined, /*isUse*/ false); + paramSymbol = resolvedSymbol; + } + if (i === 0 && paramSymbol.escapedName === "this" /* This */) { + hasThisParameter = true; + thisParameter = param.symbol; + } + else { + parameters.push(paramSymbol); + } + if (type && type.kind === 187 /* LiteralType */) { + flags |= 2 /* HasLiteralTypes */; + } + // Record a new minimum argument count if this is not an optional parameter + var isOptionalParameter_1 = isOptionalJSDocParameterTag(param) || + param.initializer || param.questionToken || param.dotDotDotToken || + iife && parameters.length > iife.arguments.length && !type || + isJSDocOptionalParameter(param); + if (!isOptionalParameter_1) { + minArgumentCount = parameters.length; + } + } + // If only one accessor includes a this-type annotation, the other behaves as if it had the same type annotation + if ((declaration.kind === 163 /* GetAccessor */ || declaration.kind === 164 /* SetAccessor */) && + !hasNonBindableDynamicName(declaration) && + (!hasThisParameter || !thisParameter)) { + var otherKind = declaration.kind === 163 /* GetAccessor */ ? 164 /* SetAccessor */ : 163 /* GetAccessor */; + var other = ts.getDeclarationOfKind(getSymbolOfNode(declaration), otherKind); + if (other) { + thisParameter = getAnnotatedAccessorThisParameter(other); + } + } + var classType = declaration.kind === 162 /* Constructor */ ? + getDeclaredTypeOfClassOrInterface(getMergedSymbol(declaration.parent.symbol)) + : undefined; + var typeParameters = classType ? classType.localTypeParameters : getTypeParametersFromDeclaration(declaration); + if (ts.hasRestParameter(declaration) || ts.isInJSFile(declaration) && maybeAddJsSyntheticRestParameter(declaration, parameters)) { + flags |= 1 /* HasRestParameter */; + } + links.resolvedSignature = createSignature(declaration, typeParameters, thisParameter, parameters, + /*resolvedReturnType*/ undefined, /*resolvedTypePredicate*/ undefined, minArgumentCount, flags); + } + return links.resolvedSignature; + } + /** + * A JS function gets a synthetic rest parameter if it references `arguments` AND: + * 1. It has no parameters but at least one `@param` with a type that starts with `...` + * OR + * 2. It has at least one parameter, and the last parameter has a matching `@param` with a type that starts with `...` + */ + function maybeAddJsSyntheticRestParameter(declaration, parameters) { + if (ts.isJSDocSignature(declaration) || !containsArgumentsReference(declaration)) { + return false; + } + var lastParam = ts.lastOrUndefined(declaration.parameters); + var lastParamTags = lastParam ? ts.getJSDocParameterTags(lastParam) : ts.getJSDocTags(declaration).filter(ts.isJSDocParameterTag); + var lastParamVariadicType = ts.firstDefined(lastParamTags, function (p) { + return p.typeExpression && ts.isJSDocVariadicType(p.typeExpression.type) ? p.typeExpression.type : undefined; + }); + var syntheticArgsSymbol = createSymbol(3 /* Variable */, "args", 32768 /* RestParameter */); + syntheticArgsSymbol.type = lastParamVariadicType ? createArrayType(getTypeFromTypeNode(lastParamVariadicType.type)) : anyArrayType; + if (lastParamVariadicType) { + // Replace the last parameter with a rest parameter. + parameters.pop(); + } + parameters.push(syntheticArgsSymbol); + return true; + } + function getSignatureOfTypeTag(node) { + // should be attached to a function declaration or expression + if (!(ts.isInJSFile(node) && ts.isFunctionLikeDeclaration(node))) + return undefined; + var typeTag = ts.getJSDocTypeTag(node); + var signature = typeTag && typeTag.typeExpression && getSingleCallSignature(getTypeFromTypeNode(typeTag.typeExpression)); + return signature && getErasedSignature(signature); + } + function getReturnTypeOfTypeTag(node) { + var signature = getSignatureOfTypeTag(node); + return signature && getReturnTypeOfSignature(signature); + } + function containsArgumentsReference(declaration) { + var links = getNodeLinks(declaration); + if (links.containsArgumentsReference === undefined) { + if (links.flags & 8192 /* CaptureArguments */) { + links.containsArgumentsReference = true; + } + else { + links.containsArgumentsReference = traverse(declaration.body); + } + } + return links.containsArgumentsReference; + function traverse(node) { + if (!node) + return false; + switch (node.kind) { + case 75 /* Identifier */: + return node.escapedText === "arguments" && ts.isExpressionNode(node); + case 159 /* PropertyDeclaration */: + case 161 /* MethodDeclaration */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + return node.name.kind === 154 /* ComputedPropertyName */ + && traverse(node.name); + default: + return !ts.nodeStartsNewLexicalEnvironment(node) && !ts.isPartOfTypeNode(node) && !!ts.forEachChild(node, traverse); + } + } + } + function getSignaturesOfSymbol(symbol) { + if (!symbol) + return ts.emptyArray; + var result = []; + for (var i = 0; i < symbol.declarations.length; i++) { + var decl = symbol.declarations[i]; + if (!ts.isFunctionLike(decl)) + continue; + // Don't include signature if node is the implementation of an overloaded function. A node is considered + // an implementation node if it has a body and the previous node is of the same kind and immediately + // precedes the implementation node (i.e. has the same parent and ends where the implementation starts). + if (i > 0 && decl.body) { + var previous = symbol.declarations[i - 1]; + if (decl.parent === previous.parent && decl.kind === previous.kind && decl.pos === previous.end) { + continue; + } + } + result.push(getSignatureFromDeclaration(decl)); + } + return result; + } + function resolveExternalModuleTypeByLiteral(name) { + var moduleSym = resolveExternalModuleName(name, name); + if (moduleSym) { + var resolvedModuleSymbol = resolveExternalModuleSymbol(moduleSym); + if (resolvedModuleSymbol) { + return getTypeOfSymbol(resolvedModuleSymbol); + } + } + return anyType; + } + function getThisTypeOfSignature(signature) { + if (signature.thisParameter) { + return getTypeOfSymbol(signature.thisParameter); + } + } + function getTypePredicateOfSignature(signature) { + if (!signature.resolvedTypePredicate) { + if (signature.target) { + var targetTypePredicate = getTypePredicateOfSignature(signature.target); + signature.resolvedTypePredicate = targetTypePredicate ? instantiateTypePredicate(targetTypePredicate, signature.mapper) : noTypePredicate; + } + else if (signature.unionSignatures) { + signature.resolvedTypePredicate = getUnionTypePredicate(signature.unionSignatures) || noTypePredicate; + } + else { + var type = signature.declaration && ts.getEffectiveReturnTypeNode(signature.declaration); + var jsdocPredicate = void 0; + if (!type && ts.isInJSFile(signature.declaration)) { + var jsdocSignature = getSignatureOfTypeTag(signature.declaration); + if (jsdocSignature && signature !== jsdocSignature) { + jsdocPredicate = getTypePredicateOfSignature(jsdocSignature); + } + } + signature.resolvedTypePredicate = type && ts.isTypePredicateNode(type) ? + createTypePredicateFromTypePredicateNode(type, signature) : + jsdocPredicate || noTypePredicate; + } + ts.Debug.assert(!!signature.resolvedTypePredicate); + } + return signature.resolvedTypePredicate === noTypePredicate ? undefined : signature.resolvedTypePredicate; + } + function createTypePredicateFromTypePredicateNode(node, signature) { + var parameterName = node.parameterName; + var type = node.type && getTypeFromTypeNode(node.type); + return parameterName.kind === 183 /* ThisType */ ? + createTypePredicate(node.assertsModifier ? 2 /* AssertsThis */ : 0 /* This */, /*parameterName*/ undefined, /*parameterIndex*/ undefined, type) : + createTypePredicate(node.assertsModifier ? 3 /* AssertsIdentifier */ : 1 /* Identifier */, parameterName.escapedText, ts.findIndex(signature.parameters, function (p) { return p.escapedName === parameterName.escapedText; }), type); + } + function getReturnTypeOfSignature(signature) { + if (!signature.resolvedReturnType) { + if (!pushTypeResolution(signature, 3 /* ResolvedReturnType */)) { + return errorType; + } + var type = signature.target ? instantiateType(getReturnTypeOfSignature(signature.target), signature.mapper) : + signature.unionSignatures ? getUnionType(ts.map(signature.unionSignatures, getReturnTypeOfSignature), 2 /* Subtype */) : + getReturnTypeFromAnnotation(signature.declaration) || + (ts.nodeIsMissing(signature.declaration.body) ? anyType : getReturnTypeFromBody(signature.declaration)); + if (signature.flags & 4 /* IsInnerCallChain */) { + type = addOptionalTypeMarker(type); + } + else if (signature.flags & 8 /* IsOuterCallChain */) { + type = getOptionalType(type); + } + if (!popTypeResolution()) { + if (signature.declaration) { + var typeNode = ts.getEffectiveReturnTypeNode(signature.declaration); + if (typeNode) { + error(typeNode, ts.Diagnostics.Return_type_annotation_circularly_references_itself); + } + else if (noImplicitAny) { + var declaration = signature.declaration; + var name = ts.getNameOfDeclaration(declaration); + if (name) { + error(name, ts.Diagnostics._0_implicitly_has_return_type_any_because_it_does_not_have_a_return_type_annotation_and_is_referenced_directly_or_indirectly_in_one_of_its_return_expressions, ts.declarationNameToString(name)); + } + else { + error(declaration, ts.Diagnostics.Function_implicitly_has_return_type_any_because_it_does_not_have_a_return_type_annotation_and_is_referenced_directly_or_indirectly_in_one_of_its_return_expressions); + } + } + } + type = anyType; + } + signature.resolvedReturnType = type; + } + return signature.resolvedReturnType; + } + function getReturnTypeFromAnnotation(declaration) { + if (declaration.kind === 162 /* Constructor */) { + return getDeclaredTypeOfClassOrInterface(getMergedSymbol(declaration.parent.symbol)); + } + if (ts.isJSDocConstructSignature(declaration)) { + return getTypeFromTypeNode(declaration.parameters[0].type); // TODO: GH#18217 + } + var typeNode = ts.getEffectiveReturnTypeNode(declaration); + if (typeNode) { + return getTypeFromTypeNode(typeNode); + } + if (declaration.kind === 163 /* GetAccessor */ && !hasNonBindableDynamicName(declaration)) { + var jsDocType = ts.isInJSFile(declaration) && getTypeForDeclarationFromJSDocComment(declaration); + if (jsDocType) { + return jsDocType; + } + var setter = ts.getDeclarationOfKind(getSymbolOfNode(declaration), 164 /* SetAccessor */); + var setterType = getAnnotatedAccessorType(setter); + if (setterType) { + return setterType; + } + } + return getReturnTypeOfTypeTag(declaration); + } + function isResolvingReturnTypeOfSignature(signature) { + return !signature.resolvedReturnType && findResolutionCycleStartIndex(signature, 3 /* ResolvedReturnType */) >= 0; + } + function getRestTypeOfSignature(signature) { + return tryGetRestTypeOfSignature(signature) || anyType; + } + function tryGetRestTypeOfSignature(signature) { + if (signatureHasRestParameter(signature)) { + var sigRestType = getTypeOfSymbol(signature.parameters[signature.parameters.length - 1]); + var restType = isTupleType(sigRestType) ? getRestTypeOfTupleType(sigRestType) : sigRestType; + return restType && getIndexTypeOfType(restType, 1 /* Number */); + } + return undefined; + } + function getSignatureInstantiation(signature, typeArguments, isJavascript, inferredTypeParameters) { + var instantiatedSignature = getSignatureInstantiationWithoutFillingInTypeArguments(signature, fillMissingTypeArguments(typeArguments, signature.typeParameters, getMinTypeArgumentCount(signature.typeParameters), isJavascript)); + if (inferredTypeParameters) { + var returnSignature = getSingleCallOrConstructSignature(getReturnTypeOfSignature(instantiatedSignature)); + if (returnSignature) { + var newReturnSignature = cloneSignature(returnSignature); + newReturnSignature.typeParameters = inferredTypeParameters; + var newInstantiatedSignature = cloneSignature(instantiatedSignature); + newInstantiatedSignature.resolvedReturnType = getOrCreateTypeFromSignature(newReturnSignature); + return newInstantiatedSignature; + } + } + return instantiatedSignature; + } + function getSignatureInstantiationWithoutFillingInTypeArguments(signature, typeArguments) { + var instantiations = signature.instantiations || (signature.instantiations = ts.createMap()); + var id = getTypeListId(typeArguments); + var instantiation = instantiations.get(id); + if (!instantiation) { + instantiations.set(id, instantiation = createSignatureInstantiation(signature, typeArguments)); + } + return instantiation; + } + function createSignatureInstantiation(signature, typeArguments) { + return instantiateSignature(signature, createSignatureTypeMapper(signature, typeArguments), /*eraseTypeParameters*/ true); + } + function createSignatureTypeMapper(signature, typeArguments) { + return createTypeMapper(signature.typeParameters, typeArguments); + } + function getErasedSignature(signature) { + return signature.typeParameters ? + signature.erasedSignatureCache || (signature.erasedSignatureCache = createErasedSignature(signature)) : + signature; + } + function createErasedSignature(signature) { + // Create an instantiation of the signature where all type arguments are the any type. + return instantiateSignature(signature, createTypeEraser(signature.typeParameters), /*eraseTypeParameters*/ true); + } + function getCanonicalSignature(signature) { + return signature.typeParameters ? + signature.canonicalSignatureCache || (signature.canonicalSignatureCache = createCanonicalSignature(signature)) : + signature; + } + function createCanonicalSignature(signature) { + // Create an instantiation of the signature where each unconstrained type parameter is replaced with + // its original. When a generic class or interface is instantiated, each generic method in the class or + // interface is instantiated with a fresh set of cloned type parameters (which we need to handle scenarios + // where different generations of the same type parameter are in scope). This leads to a lot of new type + // identities, and potentially a lot of work comparing those identities, so here we create an instantiation + // that uses the original type identities for all unconstrained type parameters. + return getSignatureInstantiation(signature, ts.map(signature.typeParameters, function (tp) { return tp.target && !getConstraintOfTypeParameter(tp.target) ? tp.target : tp; }), ts.isInJSFile(signature.declaration)); + } + function getBaseSignature(signature) { + var typeParameters = signature.typeParameters; + if (typeParameters) { + var typeEraser_1 = createTypeEraser(typeParameters); + var baseConstraints = ts.map(typeParameters, function (tp) { return instantiateType(getBaseConstraintOfType(tp), typeEraser_1) || unknownType; }); + return instantiateSignature(signature, createTypeMapper(typeParameters, baseConstraints), /*eraseTypeParameters*/ true); + } + return signature; + } + function getOrCreateTypeFromSignature(signature) { + // There are two ways to declare a construct signature, one is by declaring a class constructor + // using the constructor keyword, and the other is declaring a bare construct signature in an + // object type literal or interface (using the new keyword). Each way of declaring a constructor + // will result in a different declaration kind. + if (!signature.isolatedSignatureType) { + var kind = signature.declaration ? signature.declaration.kind : 0 /* Unknown */; + var isConstructor = kind === 162 /* Constructor */ || kind === 166 /* ConstructSignature */ || kind === 171 /* ConstructorType */; + var type = createObjectType(16 /* Anonymous */); + type.members = emptySymbols; + type.properties = ts.emptyArray; + type.callSignatures = !isConstructor ? [signature] : ts.emptyArray; + type.constructSignatures = isConstructor ? [signature] : ts.emptyArray; + signature.isolatedSignatureType = type; + } + return signature.isolatedSignatureType; + } + function getIndexSymbol(symbol) { + return symbol.members.get("__index" /* Index */); + } + function getIndexDeclarationOfSymbol(symbol, kind) { + var syntaxKind = kind === 1 /* Number */ ? 140 /* NumberKeyword */ : 143 /* StringKeyword */; + var indexSymbol = getIndexSymbol(symbol); + if (indexSymbol) { + for (var _i = 0, _a = indexSymbol.declarations; _i < _a.length; _i++) { + var decl = _a[_i]; + var node = ts.cast(decl, ts.isIndexSignatureDeclaration); + if (node.parameters.length === 1) { + var parameter = node.parameters[0]; + if (parameter.type && parameter.type.kind === syntaxKind) { + return node; + } + } + } + } + return undefined; + } + function createIndexInfo(type, isReadonly, declaration) { + return { type: type, isReadonly: isReadonly, declaration: declaration }; + } + function getIndexInfoOfSymbol(symbol, kind) { + var declaration = getIndexDeclarationOfSymbol(symbol, kind); + if (declaration) { + return createIndexInfo(declaration.type ? getTypeFromTypeNode(declaration.type) : anyType, ts.hasModifier(declaration, 64 /* Readonly */), declaration); + } + return undefined; + } + function getConstraintDeclaration(type) { + return ts.mapDefined(ts.filter(type.symbol && type.symbol.declarations, ts.isTypeParameterDeclaration), ts.getEffectiveConstraintOfTypeParameter)[0]; + } + function getInferredTypeParameterConstraint(typeParameter) { + var inferences; + if (typeParameter.symbol) { + for (var _i = 0, _a = typeParameter.symbol.declarations; _i < _a.length; _i++) { + var declaration = _a[_i]; + if (declaration.parent.kind === 181 /* InferType */) { + // When an 'infer T' declaration is immediately contained in a type reference node + // (such as 'Foo'), T's constraint is inferred from the constraint of the + // corresponding type parameter in 'Foo'. When multiple 'infer T' declarations are + // present, we form an intersection of the inferred constraint types. + var grandParent = declaration.parent.parent; + if (grandParent.kind === 169 /* TypeReference */) { + var typeReference = grandParent; + var typeParameters = getTypeParametersForTypeReference(typeReference); + if (typeParameters) { + var index = typeReference.typeArguments.indexOf(declaration.parent); + if (index < typeParameters.length) { + var declaredConstraint = getConstraintOfTypeParameter(typeParameters[index]); + if (declaredConstraint) { + // Type parameter constraints can reference other type parameters so + // constraints need to be instantiated. If instantiation produces the + // type parameter itself, we discard that inference. For example, in + // type Foo = [T, U]; + // type Bar = T extends Foo ? Foo : T; + // the instantiated constraint for U is X, so we discard that inference. + var mapper = createTypeMapper(typeParameters, getEffectiveTypeArguments(typeReference, typeParameters)); + var constraint = instantiateType(declaredConstraint, mapper); + if (constraint !== typeParameter) { + inferences = ts.append(inferences, constraint); + } + } + } + } + } + // When an 'infer T' declaration is immediately contained in a rest parameter + // declaration, we infer an 'unknown[]' constraint. + else if (grandParent.kind === 156 /* Parameter */ && grandParent.dotDotDotToken) { + inferences = ts.append(inferences, createArrayType(unknownType)); + } + } + } + } + return inferences && getIntersectionType(inferences); + } + /** This is a worker function. Use getConstraintOfTypeParameter which guards against circular constraints. */ + function getConstraintFromTypeParameter(typeParameter) { + if (!typeParameter.constraint) { + if (typeParameter.target) { + var targetConstraint = getConstraintOfTypeParameter(typeParameter.target); + typeParameter.constraint = targetConstraint ? instantiateType(targetConstraint, typeParameter.mapper) : noConstraintType; + } + else { + var constraintDeclaration = getConstraintDeclaration(typeParameter); + if (!constraintDeclaration) { + typeParameter.constraint = getInferredTypeParameterConstraint(typeParameter) || noConstraintType; + } + else { + var type = getTypeFromTypeNode(constraintDeclaration); + if (type.flags & 1 /* Any */ && type !== errorType) { // Allow errorType to propegate to keep downstream errors suppressed + // use keyofConstraintType as the base constraint for mapped type key constraints (unknown isn;t assignable to that, but `any` was), + // use unknown otherwise + type = constraintDeclaration.parent.parent.kind === 186 /* MappedType */ ? keyofConstraintType : unknownType; + } + typeParameter.constraint = type; + } + } + } + return typeParameter.constraint === noConstraintType ? undefined : typeParameter.constraint; + } + function getParentSymbolOfTypeParameter(typeParameter) { + var tp = ts.getDeclarationOfKind(typeParameter.symbol, 155 /* TypeParameter */); + var host = ts.isJSDocTemplateTag(tp.parent) ? ts.getHostSignatureFromJSDoc(tp.parent) : tp.parent; + return host && getSymbolOfNode(host); + } + function getTypeListId(types) { + var result = ""; + if (types) { + var length_4 = types.length; + var i = 0; + while (i < length_4) { + var startId = types[i].id; + var count = 1; + while (i + count < length_4 && types[i + count].id === startId + count) { + count++; + } + if (result.length) { + result += ","; + } + result += startId; + if (count > 1) { + result += ":" + count; + } + i += count; + } + } + return result; + } + // This function is used to propagate certain flags when creating new object type references and union types. + // It is only necessary to do so if a constituent type might be the undefined type, the null type, the type + // of an object literal or the anyFunctionType. This is because there are operations in the type checker + // that care about the presence of such types at arbitrary depth in a containing type. + function getPropagatingFlagsOfTypes(types, excludeKinds) { + var result = 0; + for (var _i = 0, types_8 = types; _i < types_8.length; _i++) { + var type = types_8[_i]; + if (!(type.flags & excludeKinds)) { + result |= ts.getObjectFlags(type); + } + } + return result & 3670016 /* PropagatingFlags */; + } + function createTypeReference(target, typeArguments) { + var id = getTypeListId(typeArguments); + var type = target.instantiations.get(id); + if (!type) { + type = createObjectType(4 /* Reference */, target.symbol); + target.instantiations.set(id, type); + type.objectFlags |= typeArguments ? getPropagatingFlagsOfTypes(typeArguments, /*excludeKinds*/ 0) : 0; + type.target = target; + type.resolvedTypeArguments = typeArguments; + } + return type; + } + function cloneTypeReference(source) { + var type = createType(source.flags); + type.symbol = source.symbol; + type.objectFlags = source.objectFlags; + type.target = source.target; + type.resolvedTypeArguments = source.resolvedTypeArguments; + return type; + } + function createDeferredTypeReference(target, node, mapper) { + var aliasSymbol = getAliasSymbolForTypeNode(node); + var aliasTypeArguments = getTypeArgumentsForAliasSymbol(aliasSymbol); + var type = createObjectType(4 /* Reference */, target.symbol); + type.target = target; + type.node = node; + type.mapper = mapper; + type.aliasSymbol = aliasSymbol; + type.aliasTypeArguments = mapper ? instantiateTypes(aliasTypeArguments, mapper) : aliasTypeArguments; + return type; + } + function getTypeArguments(type) { + var _a, _b; + if (!type.resolvedTypeArguments) { + if (!pushTypeResolution(type, 6 /* ResolvedTypeArguments */)) { + return ((_a = type.target.localTypeParameters) === null || _a === void 0 ? void 0 : _a.map(function () { return errorType; })) || ts.emptyArray; + } + var node = type.node; + var typeArguments = !node ? ts.emptyArray : + node.kind === 169 /* TypeReference */ ? ts.concatenate(type.target.outerTypeParameters, getEffectiveTypeArguments(node, type.target.localTypeParameters)) : + node.kind === 174 /* ArrayType */ ? [getTypeFromTypeNode(node.elementType)] : + ts.map(node.elementTypes, getTypeFromTypeNode); + if (popTypeResolution()) { + type.resolvedTypeArguments = type.mapper ? instantiateTypes(typeArguments, type.mapper) : typeArguments; + } + else { + type.resolvedTypeArguments = ((_b = type.target.localTypeParameters) === null || _b === void 0 ? void 0 : _b.map(function () { return errorType; })) || ts.emptyArray; + error(type.node || currentNode, type.target.symbol + ? ts.Diagnostics.Type_arguments_for_0_circularly_reference_themselves + : ts.Diagnostics.Tuple_type_arguments_circularly_reference_themselves, type.target.symbol && symbolToString(type.target.symbol)); + } + } + return type.resolvedTypeArguments; + } + function getTypeReferenceArity(type) { + return ts.length(type.target.typeParameters); + } + /** + * Get type from type-reference that reference to class or interface + */ + function getTypeFromClassOrInterfaceReference(node, symbol) { + var type = getDeclaredTypeOfSymbol(getMergedSymbol(symbol)); + var typeParameters = type.localTypeParameters; + if (typeParameters) { + var numTypeArguments = ts.length(node.typeArguments); + var minTypeArgumentCount = getMinTypeArgumentCount(typeParameters); + var isJs = ts.isInJSFile(node); + var isJsImplicitAny = !noImplicitAny && isJs; + if (!isJsImplicitAny && (numTypeArguments < minTypeArgumentCount || numTypeArguments > typeParameters.length)) { + var missingAugmentsTag = isJs && ts.isExpressionWithTypeArguments(node) && !ts.isJSDocAugmentsTag(node.parent); + var diag = minTypeArgumentCount === typeParameters.length ? + missingAugmentsTag ? + ts.Diagnostics.Expected_0_type_arguments_provide_these_with_an_extends_tag : + ts.Diagnostics.Generic_type_0_requires_1_type_argument_s : + missingAugmentsTag ? + ts.Diagnostics.Expected_0_1_type_arguments_provide_these_with_an_extends_tag : + ts.Diagnostics.Generic_type_0_requires_between_1_and_2_type_arguments; + var typeStr = typeToString(type, /*enclosingDeclaration*/ undefined, 2 /* WriteArrayAsGenericType */); + error(node, diag, typeStr, minTypeArgumentCount, typeParameters.length); + if (!isJs) { + // TODO: Adopt same permissive behavior in TS as in JS to reduce follow-on editing experience failures (requires editing fillMissingTypeArguments) + return errorType; + } + } + if (node.kind === 169 /* TypeReference */ && isDeferredTypeReferenceNode(node, ts.length(node.typeArguments) !== typeParameters.length)) { + return createDeferredTypeReference(type, node, /*mapper*/ undefined); + } + // In a type reference, the outer type parameters of the referenced class or interface are automatically + // supplied as type arguments and the type reference only specifies arguments for the local type parameters + // of the class or interface. + var typeArguments = ts.concatenate(type.outerTypeParameters, fillMissingTypeArguments(typeArgumentsFromTypeReferenceNode(node), typeParameters, minTypeArgumentCount, isJs)); + return createTypeReference(type, typeArguments); + } + return checkNoTypeArguments(node, symbol) ? type : errorType; + } + function getTypeAliasInstantiation(symbol, typeArguments) { + var type = getDeclaredTypeOfSymbol(symbol); + var links = getSymbolLinks(symbol); + var typeParameters = links.typeParameters; + var id = getTypeListId(typeArguments); + var instantiation = links.instantiations.get(id); + if (!instantiation) { + links.instantiations.set(id, instantiation = instantiateType(type, createTypeMapper(typeParameters, fillMissingTypeArguments(typeArguments, typeParameters, getMinTypeArgumentCount(typeParameters), ts.isInJSFile(symbol.valueDeclaration))))); + } + return instantiation; + } + /** + * Get type from reference to type alias. When a type alias is generic, the declared type of the type alias may include + * references to the type parameters of the alias. We replace those with the actual type arguments by instantiating the + * declared type. Instantiations are cached using the type identities of the type arguments as the key. + */ + function getTypeFromTypeAliasReference(node, symbol) { + var type = getDeclaredTypeOfSymbol(symbol); + var typeParameters = getSymbolLinks(symbol).typeParameters; + if (typeParameters) { + var numTypeArguments = ts.length(node.typeArguments); + var minTypeArgumentCount = getMinTypeArgumentCount(typeParameters); + if (numTypeArguments < minTypeArgumentCount || numTypeArguments > typeParameters.length) { + error(node, minTypeArgumentCount === typeParameters.length ? + ts.Diagnostics.Generic_type_0_requires_1_type_argument_s : + ts.Diagnostics.Generic_type_0_requires_between_1_and_2_type_arguments, symbolToString(symbol), minTypeArgumentCount, typeParameters.length); + return errorType; + } + return getTypeAliasInstantiation(symbol, typeArgumentsFromTypeReferenceNode(node)); + } + return checkNoTypeArguments(node, symbol) ? type : errorType; + } + function getTypeReferenceName(node) { + switch (node.kind) { + case 169 /* TypeReference */: + return node.typeName; + case 216 /* ExpressionWithTypeArguments */: + // We only support expressions that are simple qualified names. For other + // expressions this produces undefined. + var expr = node.expression; + if (ts.isEntityNameExpression(expr)) { + return expr; + } + // fall through; + } + return undefined; + } + function resolveTypeReferenceName(typeReferenceName, meaning, ignoreErrors) { + if (!typeReferenceName) { + return unknownSymbol; + } + return resolveEntityName(typeReferenceName, meaning, ignoreErrors) || unknownSymbol; + } + function getTypeReferenceType(node, symbol) { + if (symbol === unknownSymbol) { + return errorType; + } + symbol = getExpandoSymbol(symbol) || symbol; + if (symbol.flags & (32 /* Class */ | 64 /* Interface */)) { + return getTypeFromClassOrInterfaceReference(node, symbol); + } + if (symbol.flags & 524288 /* TypeAlias */) { + return getTypeFromTypeAliasReference(node, symbol); + } + // Get type from reference to named type that cannot be generic (enum or type parameter) + var res = tryGetDeclaredTypeOfSymbol(symbol); + if (res) { + return checkNoTypeArguments(node, symbol) ? getRegularTypeOfLiteralType(res) : errorType; + } + if (symbol.flags & 111551 /* Value */ && isJSDocTypeReference(node)) { + var jsdocType = getTypeFromJSDocValueReference(node, symbol); + if (jsdocType) { + return jsdocType; + } + else { + // Resolve the type reference as a Type for the purpose of reporting errors. + resolveTypeReferenceName(getTypeReferenceName(node), 788968 /* Type */); + return getTypeOfSymbol(symbol); + } + } + return errorType; + } + /** + * A JSdoc TypeReference may be to a value, but resolve it as a type anyway. + * Note: If the value is imported from commonjs, it should really be an alias, + * but this function's special-case code fakes alias resolution as well. + */ + function getTypeFromJSDocValueReference(node, symbol) { + var links = getNodeLinks(node); + if (!links.resolvedJSDocType) { + var valueType = getTypeOfSymbol(symbol); + var typeType = valueType; + if (symbol.valueDeclaration) { + var decl = ts.getRootDeclaration(symbol.valueDeclaration); + var isRequireAlias = false; + if (ts.isVariableDeclaration(decl) && decl.initializer) { + var expr = decl.initializer; + // skip past entity names, eg `require("x").a.b.c` + while (ts.isPropertyAccessExpression(expr)) { + expr = expr.expression; + } + isRequireAlias = ts.isCallExpression(expr) && ts.isRequireCall(expr, /*requireStringLiteralLikeArgument*/ true) && !!valueType.symbol; + } + var isImportTypeWithQualifier = node.kind === 188 /* ImportType */ && node.qualifier; + // valueType might not have a symbol, eg, {import('./b').STRING_LITERAL} + if (valueType.symbol && (isRequireAlias || isImportTypeWithQualifier)) { + typeType = getTypeReferenceType(node, valueType.symbol); + } + } + links.resolvedJSDocType = typeType; + } + return links.resolvedJSDocType; + } + function getSubstitutionType(baseType, substitute) { + if (substitute.flags & 3 /* AnyOrUnknown */ || substitute === baseType) { + return baseType; + } + var id = getTypeId(baseType) + ">" + getTypeId(substitute); + var cached = substitutionTypes.get(id); + if (cached) { + return cached; + } + var result = createType(33554432 /* Substitution */); + result.baseType = baseType; + result.substitute = substitute; + substitutionTypes.set(id, result); + return result; + } + function isUnaryTupleTypeNode(node) { + return node.kind === 175 /* TupleType */ && node.elementTypes.length === 1; + } + function getImpliedConstraint(type, checkNode, extendsNode) { + return isUnaryTupleTypeNode(checkNode) && isUnaryTupleTypeNode(extendsNode) ? getImpliedConstraint(type, checkNode.elementTypes[0], extendsNode.elementTypes[0]) : + getActualTypeVariable(getTypeFromTypeNode(checkNode)) === type ? getTypeFromTypeNode(extendsNode) : + undefined; + } + function getConditionalFlowTypeOfType(type, node) { + var constraints; + while (node && !ts.isStatement(node) && node.kind !== 303 /* JSDocComment */) { + var parent = node.parent; + if (parent.kind === 180 /* ConditionalType */ && node === parent.trueType) { + var constraint = getImpliedConstraint(type, parent.checkType, parent.extendsType); + if (constraint) { + constraints = ts.append(constraints, constraint); + } + } + node = parent; + } + return constraints ? getSubstitutionType(type, getIntersectionType(ts.append(constraints, type))) : type; + } + function isJSDocTypeReference(node) { + return !!(node.flags & 4194304 /* JSDoc */) && (node.kind === 169 /* TypeReference */ || node.kind === 188 /* ImportType */); + } + function checkNoTypeArguments(node, symbol) { + if (node.typeArguments) { + error(node, ts.Diagnostics.Type_0_is_not_generic, symbol ? symbolToString(symbol) : node.typeName ? ts.declarationNameToString(node.typeName) : anon); + return false; + } + return true; + } + function getIntendedTypeFromJSDocTypeReference(node) { + if (ts.isIdentifier(node.typeName)) { + var typeArgs = node.typeArguments; + switch (node.typeName.escapedText) { + case "String": + checkNoTypeArguments(node); + return stringType; + case "Number": + checkNoTypeArguments(node); + return numberType; + case "Boolean": + checkNoTypeArguments(node); + return booleanType; + case "Void": + checkNoTypeArguments(node); + return voidType; + case "Undefined": + checkNoTypeArguments(node); + return undefinedType; + case "Null": + checkNoTypeArguments(node); + return nullType; + case "Function": + case "function": + checkNoTypeArguments(node); + return globalFunctionType; + case "array": + return (!typeArgs || !typeArgs.length) && !noImplicitAny ? anyArrayType : undefined; + case "promise": + return (!typeArgs || !typeArgs.length) && !noImplicitAny ? createPromiseType(anyType) : undefined; + case "Object": + if (typeArgs && typeArgs.length === 2) { + if (ts.isJSDocIndexSignature(node)) { + var indexed = getTypeFromTypeNode(typeArgs[0]); + var target = getTypeFromTypeNode(typeArgs[1]); + var index = createIndexInfo(target, /*isReadonly*/ false); + return createAnonymousType(undefined, emptySymbols, ts.emptyArray, ts.emptyArray, indexed === stringType ? index : undefined, indexed === numberType ? index : undefined); + } + return anyType; + } + checkNoTypeArguments(node); + return !noImplicitAny ? anyType : undefined; + } + } + } + function getTypeFromJSDocNullableTypeNode(node) { + var type = getTypeFromTypeNode(node.type); + return strictNullChecks ? getNullableType(type, 65536 /* Null */) : type; + } + function getTypeFromTypeReference(node) { + var links = getNodeLinks(node); + if (!links.resolvedType) { + // handle LS queries on the `const` in `x as const` by resolving to the type of `x` + if (ts.isConstTypeReference(node) && ts.isAssertionExpression(node.parent)) { + links.resolvedSymbol = unknownSymbol; + return links.resolvedType = checkExpressionCached(node.parent.expression); + } + var symbol = void 0; + var type = void 0; + var meaning = 788968 /* Type */; + if (isJSDocTypeReference(node)) { + type = getIntendedTypeFromJSDocTypeReference(node); + if (!type) { + symbol = resolveTypeReferenceName(getTypeReferenceName(node), meaning, /*ignoreErrors*/ true); + if (symbol === unknownSymbol) { + symbol = resolveTypeReferenceName(getTypeReferenceName(node), meaning | 111551 /* Value */); + } + else { + resolveTypeReferenceName(getTypeReferenceName(node), meaning); // Resolve again to mark errors, if any + } + type = getTypeReferenceType(node, symbol); + } + } + if (!type) { + symbol = resolveTypeReferenceName(getTypeReferenceName(node), meaning); + type = getTypeReferenceType(node, symbol); + } + // Cache both the resolved symbol and the resolved type. The resolved symbol is needed when we check the + // type reference in checkTypeReferenceNode. + links.resolvedSymbol = symbol; + links.resolvedType = type; + } + return links.resolvedType; + } + function typeArgumentsFromTypeReferenceNode(node) { + return ts.map(node.typeArguments, getTypeFromTypeNode); + } + function getTypeFromTypeQueryNode(node) { + var links = getNodeLinks(node); + if (!links.resolvedType) { + // TypeScript 1.0 spec (April 2014): 3.6.3 + // The expression is processed as an identifier expression (section 4.3) + // or property access expression(section 4.10), + // the widened type(section 3.9) of which becomes the result. + links.resolvedType = getRegularTypeOfLiteralType(getWidenedType(checkExpression(node.exprName))); + } + return links.resolvedType; + } + function getTypeOfGlobalSymbol(symbol, arity) { + function getTypeDeclaration(symbol) { + var declarations = symbol.declarations; + for (var _i = 0, declarations_3 = declarations; _i < declarations_3.length; _i++) { + var declaration = declarations_3[_i]; + switch (declaration.kind) { + case 245 /* ClassDeclaration */: + case 246 /* InterfaceDeclaration */: + case 248 /* EnumDeclaration */: + return declaration; + } + } + } + if (!symbol) { + return arity ? emptyGenericType : emptyObjectType; + } + var type = getDeclaredTypeOfSymbol(symbol); + if (!(type.flags & 524288 /* Object */)) { + error(getTypeDeclaration(symbol), ts.Diagnostics.Global_type_0_must_be_a_class_or_interface_type, ts.symbolName(symbol)); + return arity ? emptyGenericType : emptyObjectType; + } + if (ts.length(type.typeParameters) !== arity) { + error(getTypeDeclaration(symbol), ts.Diagnostics.Global_type_0_must_have_1_type_parameter_s, ts.symbolName(symbol), arity); + return arity ? emptyGenericType : emptyObjectType; + } + return type; + } + function getGlobalValueSymbol(name, reportErrors) { + return getGlobalSymbol(name, 111551 /* Value */, reportErrors ? ts.Diagnostics.Cannot_find_global_value_0 : undefined); + } + function getGlobalTypeSymbol(name, reportErrors) { + return getGlobalSymbol(name, 788968 /* Type */, reportErrors ? ts.Diagnostics.Cannot_find_global_type_0 : undefined); + } + function getGlobalSymbol(name, meaning, diagnostic) { + // Don't track references for global symbols anyway, so value if `isReference` is arbitrary + return resolveName(undefined, name, meaning, diagnostic, name, /*isUse*/ false); + } + function getGlobalType(name, arity, reportErrors) { + var symbol = getGlobalTypeSymbol(name, reportErrors); + return symbol || reportErrors ? getTypeOfGlobalSymbol(symbol, arity) : undefined; + } + function getGlobalTypedPropertyDescriptorType() { + return deferredGlobalTypedPropertyDescriptorType || (deferredGlobalTypedPropertyDescriptorType = getGlobalType("TypedPropertyDescriptor", /*arity*/ 1, /*reportErrors*/ true)) || emptyGenericType; + } + function getGlobalTemplateStringsArrayType() { + return deferredGlobalTemplateStringsArrayType || (deferredGlobalTemplateStringsArrayType = getGlobalType("TemplateStringsArray", /*arity*/ 0, /*reportErrors*/ true)) || emptyObjectType; + } + function getGlobalImportMetaType() { + return deferredGlobalImportMetaType || (deferredGlobalImportMetaType = getGlobalType("ImportMeta", /*arity*/ 0, /*reportErrors*/ true)) || emptyObjectType; + } + function getGlobalESSymbolConstructorSymbol(reportErrors) { + return deferredGlobalESSymbolConstructorSymbol || (deferredGlobalESSymbolConstructorSymbol = getGlobalValueSymbol("Symbol", reportErrors)); + } + function getGlobalESSymbolType(reportErrors) { + return deferredGlobalESSymbolType || (deferredGlobalESSymbolType = getGlobalType("Symbol", /*arity*/ 0, reportErrors)) || emptyObjectType; + } + function getGlobalPromiseType(reportErrors) { + return deferredGlobalPromiseType || (deferredGlobalPromiseType = getGlobalType("Promise", /*arity*/ 1, reportErrors)) || emptyGenericType; + } + function getGlobalPromiseLikeType(reportErrors) { + return deferredGlobalPromiseLikeType || (deferredGlobalPromiseLikeType = getGlobalType("PromiseLike", /*arity*/ 1, reportErrors)) || emptyGenericType; + } + function getGlobalPromiseConstructorSymbol(reportErrors) { + return deferredGlobalPromiseConstructorSymbol || (deferredGlobalPromiseConstructorSymbol = getGlobalValueSymbol("Promise", reportErrors)); + } + function getGlobalPromiseConstructorLikeType(reportErrors) { + return deferredGlobalPromiseConstructorLikeType || (deferredGlobalPromiseConstructorLikeType = getGlobalType("PromiseConstructorLike", /*arity*/ 0, reportErrors)) || emptyObjectType; + } + function getGlobalAsyncIterableType(reportErrors) { + return deferredGlobalAsyncIterableType || (deferredGlobalAsyncIterableType = getGlobalType("AsyncIterable", /*arity*/ 1, reportErrors)) || emptyGenericType; + } + function getGlobalAsyncIteratorType(reportErrors) { + return deferredGlobalAsyncIteratorType || (deferredGlobalAsyncIteratorType = getGlobalType("AsyncIterator", /*arity*/ 3, reportErrors)) || emptyGenericType; + } + function getGlobalAsyncIterableIteratorType(reportErrors) { + return deferredGlobalAsyncIterableIteratorType || (deferredGlobalAsyncIterableIteratorType = getGlobalType("AsyncIterableIterator", /*arity*/ 1, reportErrors)) || emptyGenericType; + } + function getGlobalAsyncGeneratorType(reportErrors) { + return deferredGlobalAsyncGeneratorType || (deferredGlobalAsyncGeneratorType = getGlobalType("AsyncGenerator", /*arity*/ 3, reportErrors)) || emptyGenericType; + } + function getGlobalIterableType(reportErrors) { + return deferredGlobalIterableType || (deferredGlobalIterableType = getGlobalType("Iterable", /*arity*/ 1, reportErrors)) || emptyGenericType; + } + function getGlobalIteratorType(reportErrors) { + return deferredGlobalIteratorType || (deferredGlobalIteratorType = getGlobalType("Iterator", /*arity*/ 3, reportErrors)) || emptyGenericType; + } + function getGlobalIterableIteratorType(reportErrors) { + return deferredGlobalIterableIteratorType || (deferredGlobalIterableIteratorType = getGlobalType("IterableIterator", /*arity*/ 1, reportErrors)) || emptyGenericType; + } + function getGlobalGeneratorType(reportErrors) { + return deferredGlobalGeneratorType || (deferredGlobalGeneratorType = getGlobalType("Generator", /*arity*/ 3, reportErrors)) || emptyGenericType; + } + function getGlobalIteratorYieldResultType(reportErrors) { + return deferredGlobalIteratorYieldResultType || (deferredGlobalIteratorYieldResultType = getGlobalType("IteratorYieldResult", /*arity*/ 1, reportErrors)) || emptyGenericType; + } + function getGlobalIteratorReturnResultType(reportErrors) { + return deferredGlobalIteratorReturnResultType || (deferredGlobalIteratorReturnResultType = getGlobalType("IteratorReturnResult", /*arity*/ 1, reportErrors)) || emptyGenericType; + } + function getGlobalTypeOrUndefined(name, arity) { + if (arity === void 0) { arity = 0; } + var symbol = getGlobalSymbol(name, 788968 /* Type */, /*diagnostic*/ undefined); + return symbol && getTypeOfGlobalSymbol(symbol, arity); + } + function getGlobalExtractSymbol() { + return deferredGlobalExtractSymbol || (deferredGlobalExtractSymbol = getGlobalSymbol("Extract", 524288 /* TypeAlias */, ts.Diagnostics.Cannot_find_global_type_0)); // TODO: GH#18217 + } + function getGlobalOmitSymbol() { + return deferredGlobalOmitSymbol || (deferredGlobalOmitSymbol = getGlobalSymbol("Omit", 524288 /* TypeAlias */, ts.Diagnostics.Cannot_find_global_type_0)); // TODO: GH#18217 + } + function getGlobalBigIntType(reportErrors) { + return deferredGlobalBigIntType || (deferredGlobalBigIntType = getGlobalType("BigInt", /*arity*/ 0, reportErrors)) || emptyObjectType; + } + /** + * Instantiates a global type that is generic with some element type, and returns that instantiation. + */ + function createTypeFromGenericGlobalType(genericGlobalType, typeArguments) { + return genericGlobalType !== emptyGenericType ? createTypeReference(genericGlobalType, typeArguments) : emptyObjectType; + } + function createTypedPropertyDescriptorType(propertyType) { + return createTypeFromGenericGlobalType(getGlobalTypedPropertyDescriptorType(), [propertyType]); + } + function createIterableType(iteratedType) { + return createTypeFromGenericGlobalType(getGlobalIterableType(/*reportErrors*/ true), [iteratedType]); + } + function createArrayType(elementType, readonly) { + return createTypeFromGenericGlobalType(readonly ? globalReadonlyArrayType : globalArrayType, [elementType]); + } + function getArrayOrTupleTargetType(node) { + var readonly = isReadonlyTypeOperator(node.parent); + if (node.kind === 174 /* ArrayType */ || node.elementTypes.length === 1 && node.elementTypes[0].kind === 177 /* RestType */) { + return readonly ? globalReadonlyArrayType : globalArrayType; + } + var lastElement = ts.lastOrUndefined(node.elementTypes); + var restElement = lastElement && lastElement.kind === 177 /* RestType */ ? lastElement : undefined; + var minLength = ts.findLastIndex(node.elementTypes, function (n) { return n.kind !== 176 /* OptionalType */ && n !== restElement; }) + 1; + return getTupleTypeOfArity(node.elementTypes.length, minLength, !!restElement, readonly, /*associatedNames*/ undefined); + } + // Return true if the given type reference node is directly aliased or if it needs to be deferred + // because it is possibly contained in a circular chain of eagerly resolved types. + function isDeferredTypeReferenceNode(node, hasDefaultTypeArguments) { + return !!getAliasSymbolForTypeNode(node) || isResolvedByTypeAlias(node) && (node.kind === 174 /* ArrayType */ ? mayResolveTypeAlias(node.elementType) : + node.kind === 175 /* TupleType */ ? ts.some(node.elementTypes, mayResolveTypeAlias) : + hasDefaultTypeArguments || ts.some(node.typeArguments, mayResolveTypeAlias)); + } + // Return true when the given node is transitively contained in type constructs that eagerly + // resolve their constituent types. We include SyntaxKind.TypeReference because type arguments + // of type aliases are eagerly resolved. + function isResolvedByTypeAlias(node) { + var parent = node.parent; + switch (parent.kind) { + case 182 /* ParenthesizedType */: + case 169 /* TypeReference */: + case 178 /* UnionType */: + case 179 /* IntersectionType */: + case 185 /* IndexedAccessType */: + case 180 /* ConditionalType */: + case 184 /* TypeOperator */: + case 174 /* ArrayType */: + case 175 /* TupleType */: + return isResolvedByTypeAlias(parent); + case 247 /* TypeAliasDeclaration */: + return true; + } + return false; + } + // Return true if resolving the given node (i.e. getTypeFromTypeNode) possibly causes resolution + // of a type alias. + function mayResolveTypeAlias(node) { + switch (node.kind) { + case 169 /* TypeReference */: + return isJSDocTypeReference(node) || !!(resolveTypeReferenceName(node.typeName, 788968 /* Type */).flags & 524288 /* TypeAlias */); + case 172 /* TypeQuery */: + return true; + case 184 /* TypeOperator */: + return node.operator !== 147 /* UniqueKeyword */ && mayResolveTypeAlias(node.type); + case 182 /* ParenthesizedType */: + case 176 /* OptionalType */: + case 299 /* JSDocOptionalType */: + case 297 /* JSDocNullableType */: + case 298 /* JSDocNonNullableType */: + case 294 /* JSDocTypeExpression */: + return mayResolveTypeAlias(node.type); + case 177 /* RestType */: + return node.type.kind !== 174 /* ArrayType */ || mayResolveTypeAlias(node.type.elementType); + case 178 /* UnionType */: + case 179 /* IntersectionType */: + return ts.some(node.types, mayResolveTypeAlias); + case 185 /* IndexedAccessType */: + return mayResolveTypeAlias(node.objectType) || mayResolveTypeAlias(node.indexType); + case 180 /* ConditionalType */: + return mayResolveTypeAlias(node.checkType) || mayResolveTypeAlias(node.extendsType) || + mayResolveTypeAlias(node.trueType) || mayResolveTypeAlias(node.falseType); + } + return false; + } + function getTypeFromArrayOrTupleTypeNode(node) { + var links = getNodeLinks(node); + if (!links.resolvedType) { + var target = getArrayOrTupleTargetType(node); + if (target === emptyGenericType) { + links.resolvedType = emptyObjectType; + } + else if (isDeferredTypeReferenceNode(node)) { + links.resolvedType = node.kind === 175 /* TupleType */ && node.elementTypes.length === 0 ? target : + createDeferredTypeReference(target, node, /*mapper*/ undefined); + } + else { + var elementTypes = node.kind === 174 /* ArrayType */ ? [getTypeFromTypeNode(node.elementType)] : ts.map(node.elementTypes, getTypeFromTypeNode); + links.resolvedType = createTypeReference(target, elementTypes); + } + } + return links.resolvedType; + } + function isReadonlyTypeOperator(node) { + return ts.isTypeOperatorNode(node) && node.operator === 138 /* ReadonlyKeyword */; + } + // We represent tuple types as type references to synthesized generic interface types created by + // this function. The types are of the form: + // + // interface Tuple extends Array { 0: T0, 1: T1, 2: T2, ... } + // + // Note that the generic type created by this function has no symbol associated with it. The same + // is true for each of the synthesized type parameters. + function createTupleTypeOfArity(arity, minLength, hasRestElement, readonly, associatedNames) { + var typeParameters; + var properties = []; + var maxLength = hasRestElement ? arity - 1 : arity; + if (arity) { + typeParameters = new Array(arity); + for (var i = 0; i < arity; i++) { + var typeParameter = typeParameters[i] = createTypeParameter(); + if (i < maxLength) { + var property = createSymbol(4 /* Property */ | (i >= minLength ? 16777216 /* Optional */ : 0), "" + i, readonly ? 8 /* Readonly */ : 0); + property.type = typeParameter; + properties.push(property); + } + } + } + var literalTypes = []; + for (var i = minLength; i <= maxLength; i++) + literalTypes.push(getLiteralType(i)); + var lengthSymbol = createSymbol(4 /* Property */, "length"); + lengthSymbol.type = hasRestElement ? numberType : getUnionType(literalTypes); + properties.push(lengthSymbol); + var type = createObjectType(8 /* Tuple */ | 4 /* Reference */); + type.typeParameters = typeParameters; + type.outerTypeParameters = undefined; + type.localTypeParameters = typeParameters; + type.instantiations = ts.createMap(); + type.instantiations.set(getTypeListId(type.typeParameters), type); + type.target = type; + type.resolvedTypeArguments = type.typeParameters; + type.thisType = createTypeParameter(); + type.thisType.isThisType = true; + type.thisType.constraint = type; + type.declaredProperties = properties; + type.declaredCallSignatures = ts.emptyArray; + type.declaredConstructSignatures = ts.emptyArray; + type.declaredStringIndexInfo = undefined; + type.declaredNumberIndexInfo = undefined; + type.minLength = minLength; + type.hasRestElement = hasRestElement; + type.readonly = readonly; + type.associatedNames = associatedNames; + return type; + } + function getTupleTypeOfArity(arity, minLength, hasRestElement, readonly, associatedNames) { + var key = arity + (hasRestElement ? "+" : ",") + minLength + (readonly ? "R" : "") + (associatedNames && associatedNames.length ? "," + associatedNames.join(",") : ""); + var type = tupleTypes.get(key); + if (!type) { + tupleTypes.set(key, type = createTupleTypeOfArity(arity, minLength, hasRestElement, readonly, associatedNames)); + } + return type; + } + function createTupleType(elementTypes, minLength, hasRestElement, readonly, associatedNames) { + if (minLength === void 0) { minLength = elementTypes.length; } + if (hasRestElement === void 0) { hasRestElement = false; } + if (readonly === void 0) { readonly = false; } + var arity = elementTypes.length; + if (arity === 1 && hasRestElement) { + return createArrayType(elementTypes[0], readonly); + } + var tupleType = getTupleTypeOfArity(arity, minLength, arity > 0 && hasRestElement, readonly, associatedNames); + return elementTypes.length ? createTypeReference(tupleType, elementTypes) : tupleType; + } + function sliceTupleType(type, index) { + var tuple = type.target; + if (tuple.hasRestElement) { + // don't slice off rest element + index = Math.min(index, getTypeReferenceArity(type) - 1); + } + return createTupleType(getTypeArguments(type).slice(index), Math.max(0, tuple.minLength - index), tuple.hasRestElement, tuple.readonly, tuple.associatedNames && tuple.associatedNames.slice(index)); + } + function getTypeFromOptionalTypeNode(node) { + var type = getTypeFromTypeNode(node.type); + return strictNullChecks ? getOptionalType(type) : type; + } + function getTypeId(type) { + return type.id; + } + function containsType(types, type) { + return ts.binarySearch(types, type, getTypeId, ts.compareValues) >= 0; + } + function insertType(types, type) { + var index = ts.binarySearch(types, type, getTypeId, ts.compareValues); + if (index < 0) { + types.splice(~index, 0, type); + return true; + } + return false; + } + function addTypeToUnion(typeSet, includes, type) { + var flags = type.flags; + if (flags & 1048576 /* Union */) { + return addTypesToUnion(typeSet, includes, type.types); + } + // We ignore 'never' types in unions + if (!(flags & 131072 /* Never */)) { + includes |= flags & 71041023 /* IncludesMask */; + if (flags & 66846720 /* StructuredOrInstantiable */) + includes |= 262144 /* IncludesStructuredOrInstantiable */; + if (type === wildcardType) + includes |= 8388608 /* IncludesWildcard */; + if (!strictNullChecks && flags & 98304 /* Nullable */) { + if (!(ts.getObjectFlags(type) & 524288 /* ContainsWideningType */)) + includes |= 4194304 /* IncludesNonWideningType */; + } + else { + var len = typeSet.length; + var index = len && type.id > typeSet[len - 1].id ? ~len : ts.binarySearch(typeSet, type, getTypeId, ts.compareValues); + if (index < 0) { + typeSet.splice(~index, 0, type); + } + } + } + return includes; + } + // Add the given types to the given type set. Order is preserved, duplicates are removed, + // and nested types of the given kind are flattened into the set. + function addTypesToUnion(typeSet, includes, types) { + for (var _i = 0, types_9 = types; _i < types_9.length; _i++) { + var type = types_9[_i]; + includes = addTypeToUnion(typeSet, includes, type); + } + return includes; + } + function isSetOfLiteralsFromSameEnum(types) { + var first = types[0]; + if (first.flags & 1024 /* EnumLiteral */) { + var firstEnum = getParentOfSymbol(first.symbol); + for (var i = 1; i < types.length; i++) { + var other = types[i]; + if (!(other.flags & 1024 /* EnumLiteral */) || (firstEnum !== getParentOfSymbol(other.symbol))) { + return false; + } + } + return true; + } + return false; + } + function removeSubtypes(types, primitivesOnly) { + var len = types.length; + if (len === 0 || isSetOfLiteralsFromSameEnum(types)) { + return true; + } + var i = len; + var count = 0; + while (i > 0) { + i--; + var source = types[i]; + for (var _i = 0, types_10 = types; _i < types_10.length; _i++) { + var target = types_10[_i]; + if (source !== target) { + if (count === 100000) { + // After 100000 subtype checks we estimate the remaining amount of work by assuming the + // same ratio of checks per element. If the estimated number of remaining type checks is + // greater than an upper limit we deem the union type too complex to represent. The + // upper limit is 25M for unions of primitives only, and 1M otherwise. This for example + // caps union types at 5000 unique literal types and 1000 unique object types. + var estimatedCount = (count / (len - i)) * len; + if (estimatedCount > (primitivesOnly ? 25000000 : 1000000)) { + error(currentNode, ts.Diagnostics.Expression_produces_a_union_type_that_is_too_complex_to_represent); + return false; + } + } + count++; + if (isTypeRelatedTo(source, target, strictSubtypeRelation) && (!(ts.getObjectFlags(getTargetType(source)) & 1 /* Class */) || + !(ts.getObjectFlags(getTargetType(target)) & 1 /* Class */) || + isTypeDerivedFrom(source, target))) { + ts.orderedRemoveItemAt(types, i); + break; + } + } + } + } + return true; + } + function removeRedundantLiteralTypes(types, includes) { + var i = types.length; + while (i > 0) { + i--; + var t = types[i]; + var remove = t.flags & 128 /* StringLiteral */ && includes & 4 /* String */ || + t.flags & 256 /* NumberLiteral */ && includes & 8 /* Number */ || + t.flags & 2048 /* BigIntLiteral */ && includes & 64 /* BigInt */ || + t.flags & 8192 /* UniqueESSymbol */ && includes & 4096 /* ESSymbol */ || + isFreshLiteralType(t) && containsType(types, t.regularType); + if (remove) { + ts.orderedRemoveItemAt(types, i); + } + } + } + // We sort and deduplicate the constituent types based on object identity. If the subtypeReduction + // flag is specified we also reduce the constituent type set to only include types that aren't subtypes + // of other types. Subtype reduction is expensive for large union types and is possible only when union + // types are known not to circularly reference themselves (as is the case with union types created by + // expression constructs such as array literals and the || and ?: operators). Named types can + // circularly reference themselves and therefore cannot be subtype reduced during their declaration. + // For example, "type Item = string | (() => Item" is a named type that circularly references itself. + function getUnionType(types, unionReduction, aliasSymbol, aliasTypeArguments) { + if (unionReduction === void 0) { unionReduction = 1 /* Literal */; } + if (types.length === 0) { + return neverType; + } + if (types.length === 1) { + return types[0]; + } + var typeSet = []; + var includes = addTypesToUnion(typeSet, 0, types); + if (unionReduction !== 0 /* None */) { + if (includes & 3 /* AnyOrUnknown */) { + return includes & 1 /* Any */ ? includes & 8388608 /* IncludesWildcard */ ? wildcardType : anyType : unknownType; + } + switch (unionReduction) { + case 1 /* Literal */: + if (includes & (2944 /* Literal */ | 8192 /* UniqueESSymbol */)) { + removeRedundantLiteralTypes(typeSet, includes); + } + break; + case 2 /* Subtype */: + if (!removeSubtypes(typeSet, !(includes & 262144 /* IncludesStructuredOrInstantiable */))) { + return errorType; + } + break; + } + if (typeSet.length === 0) { + return includes & 65536 /* Null */ ? includes & 4194304 /* IncludesNonWideningType */ ? nullType : nullWideningType : + includes & 32768 /* Undefined */ ? includes & 4194304 /* IncludesNonWideningType */ ? undefinedType : undefinedWideningType : + neverType; + } + } + var objectFlags = (includes & 66994211 /* NotPrimitiveUnion */ ? 0 : 262144 /* PrimitiveUnion */) | + (includes & 2097152 /* Intersection */ ? 268435456 /* ContainsIntersections */ : 0); + return getUnionTypeFromSortedList(typeSet, objectFlags, aliasSymbol, aliasTypeArguments); + } + function getUnionTypePredicate(signatures) { + var first; + var types = []; + for (var _i = 0, signatures_6 = signatures; _i < signatures_6.length; _i++) { + var sig = signatures_6[_i]; + var pred = getTypePredicateOfSignature(sig); + if (!pred || pred.kind === 2 /* AssertsThis */ || pred.kind === 3 /* AssertsIdentifier */) { + continue; + } + if (first) { + if (!typePredicateKindsMatch(first, pred)) { + // No common type predicate. + return undefined; + } + } + else { + first = pred; + } + types.push(pred.type); + } + if (!first) { + // No union signatures had a type predicate. + return undefined; + } + var unionType = getUnionType(types); + return createTypePredicate(first.kind, first.parameterName, first.parameterIndex, unionType); + } + function typePredicateKindsMatch(a, b) { + return a.kind === b.kind && a.parameterIndex === b.parameterIndex; + } + // This function assumes the constituent type list is sorted and deduplicated. + function getUnionTypeFromSortedList(types, objectFlags, aliasSymbol, aliasTypeArguments) { + if (types.length === 0) { + return neverType; + } + if (types.length === 1) { + return types[0]; + } + var id = getTypeListId(types); + var type = unionTypes.get(id); + if (!type) { + type = createType(1048576 /* Union */); + unionTypes.set(id, type); + type.objectFlags = objectFlags | getPropagatingFlagsOfTypes(types, /*excludeKinds*/ 98304 /* Nullable */); + type.types = types; + /* + Note: This is the alias symbol (or lack thereof) that we see when we first encounter this union type. + For aliases of identical unions, eg `type T = A | B; type U = A | B`, the symbol of the first alias encountered is the aliasSymbol. + (In the language service, the order may depend on the order in which a user takes actions, such as hovering over symbols.) + It's important that we create equivalent union types only once, so that's an unfortunate side effect. + */ + type.aliasSymbol = aliasSymbol; + type.aliasTypeArguments = aliasTypeArguments; + } + return type; + } + function getTypeFromUnionTypeNode(node) { + var links = getNodeLinks(node); + if (!links.resolvedType) { + var aliasSymbol = getAliasSymbolForTypeNode(node); + links.resolvedType = getUnionType(ts.map(node.types, getTypeFromTypeNode), 1 /* Literal */, aliasSymbol, getTypeArgumentsForAliasSymbol(aliasSymbol)); + } + return links.resolvedType; + } + function addTypeToIntersection(typeSet, includes, type) { + var flags = type.flags; + if (flags & 2097152 /* Intersection */) { + return addTypesToIntersection(typeSet, includes, type.types); + } + if (isEmptyAnonymousObjectType(type)) { + if (!(includes & 16777216 /* IncludesEmptyObject */)) { + includes |= 16777216 /* IncludesEmptyObject */; + typeSet.set(type.id.toString(), type); + } + } + else { + if (flags & 3 /* AnyOrUnknown */) { + if (type === wildcardType) + includes |= 8388608 /* IncludesWildcard */; + } + else if ((strictNullChecks || !(flags & 98304 /* Nullable */)) && !typeSet.has(type.id.toString())) { + if (type.flags & 109440 /* Unit */ && includes & 109440 /* Unit */) { + // We have seen two distinct unit types which means we should reduce to an + // empty intersection. Adding TypeFlags.NonPrimitive causes that to happen. + includes |= 67108864 /* NonPrimitive */; + } + typeSet.set(type.id.toString(), type); + } + includes |= flags & 71041023 /* IncludesMask */; + } + return includes; + } + // Add the given types to the given type set. Order is preserved, freshness is removed from literal + // types, duplicates are removed, and nested types of the given kind are flattened into the set. + function addTypesToIntersection(typeSet, includes, types) { + for (var _i = 0, types_11 = types; _i < types_11.length; _i++) { + var type = types_11[_i]; + includes = addTypeToIntersection(typeSet, includes, getRegularTypeOfLiteralType(type)); + } + return includes; + } + function removeRedundantPrimitiveTypes(types, includes) { + var i = types.length; + while (i > 0) { + i--; + var t = types[i]; + var remove = t.flags & 4 /* String */ && includes & 128 /* StringLiteral */ || + t.flags & 8 /* Number */ && includes & 256 /* NumberLiteral */ || + t.flags & 64 /* BigInt */ && includes & 2048 /* BigIntLiteral */ || + t.flags & 4096 /* ESSymbol */ && includes & 8192 /* UniqueESSymbol */; + if (remove) { + ts.orderedRemoveItemAt(types, i); + } + } + } + // Check that the given type has a match in every union. A given type is matched by + // an identical type, and a literal type is additionally matched by its corresponding + // primitive type. + function eachUnionContains(unionTypes, type) { + for (var _i = 0, unionTypes_1 = unionTypes; _i < unionTypes_1.length; _i++) { + var u = unionTypes_1[_i]; + if (!containsType(u.types, type)) { + var primitive = type.flags & 128 /* StringLiteral */ ? stringType : + type.flags & 256 /* NumberLiteral */ ? numberType : + type.flags & 2048 /* BigIntLiteral */ ? bigintType : + type.flags & 8192 /* UniqueESSymbol */ ? esSymbolType : + undefined; + if (!primitive || !containsType(u.types, primitive)) { + return false; + } + } + } + return true; + } + function extractIrreducible(types, flag) { + if (ts.every(types, function (t) { return !!(t.flags & 1048576 /* Union */) && ts.some(t.types, function (tt) { return !!(tt.flags & flag); }); })) { + for (var i = 0; i < types.length; i++) { + types[i] = filterType(types[i], function (t) { return !(t.flags & flag); }); + } + return true; + } + return false; + } + // If the given list of types contains more than one union of primitive types, replace the + // first with a union containing an intersection of those primitive types, then remove the + // other unions and return true. Otherwise, do nothing and return false. + function intersectUnionsOfPrimitiveTypes(types) { + var unionTypes; + var index = ts.findIndex(types, function (t) { return !!(ts.getObjectFlags(t) & 262144 /* PrimitiveUnion */); }); + if (index < 0) { + return false; + } + var i = index + 1; + // Remove all but the first union of primitive types and collect them in + // the unionTypes array. + while (i < types.length) { + var t = types[i]; + if (ts.getObjectFlags(t) & 262144 /* PrimitiveUnion */) { + (unionTypes || (unionTypes = [types[index]])).push(t); + ts.orderedRemoveItemAt(types, i); + } + else { + i++; + } + } + // Return false if there was only one union of primitive types + if (!unionTypes) { + return false; + } + // We have more than one union of primitive types, now intersect them. For each + // type in each union we check if the type is matched in every union and if so + // we include it in the result. + var checked = []; + var result = []; + for (var _i = 0, unionTypes_2 = unionTypes; _i < unionTypes_2.length; _i++) { + var u = unionTypes_2[_i]; + for (var _a = 0, _b = u.types; _a < _b.length; _a++) { + var t = _b[_a]; + if (insertType(checked, t)) { + if (eachUnionContains(unionTypes, t)) { + insertType(result, t); + } + } + } + } + // Finally replace the first union with the result + types[index] = getUnionTypeFromSortedList(result, 262144 /* PrimitiveUnion */); + return true; + } + function createIntersectionType(types, aliasSymbol, aliasTypeArguments) { + var result = createType(2097152 /* Intersection */); + result.objectFlags = getPropagatingFlagsOfTypes(types, /*excludeKinds*/ 98304 /* Nullable */); + result.types = types; + result.aliasSymbol = aliasSymbol; // See comment in `getUnionTypeFromSortedList`. + result.aliasTypeArguments = aliasTypeArguments; + return result; + } + // We normalize combinations of intersection and union types based on the distributive property of the '&' + // operator. Specifically, because X & (A | B) is equivalent to X & A | X & B, we can transform intersection + // types with union type constituents into equivalent union types with intersection type constituents and + // effectively ensure that union types are always at the top level in type representations. + // + // We do not perform structural deduplication on intersection types. Intersection types are created only by the & + // type operator and we can't reduce those because we want to support recursive intersection types. For example, + // a type alias of the form "type List = T & { next: List }" cannot be reduced during its declaration. + // Also, unlike union types, the order of the constituent types is preserved in order that overload resolution + // for intersections of types with signatures can be deterministic. + function getIntersectionType(types, aliasSymbol, aliasTypeArguments) { + var typeMembershipMap = ts.createMap(); + var includes = addTypesToIntersection(typeMembershipMap, 0, types); + var typeSet = ts.arrayFrom(typeMembershipMap.values()); + // An intersection type is considered empty if it contains + // the type never, or + // more than one unit type or, + // an object type and a nullable type (null or undefined), or + // a string-like type and a type known to be non-string-like, or + // a number-like type and a type known to be non-number-like, or + // a symbol-like type and a type known to be non-symbol-like, or + // a void-like type and a type known to be non-void-like, or + // a non-primitive type and a type known to be primitive. + if (includes & 131072 /* Never */ || + strictNullChecks && includes & 98304 /* Nullable */ && includes & (524288 /* Object */ | 67108864 /* NonPrimitive */ | 16777216 /* IncludesEmptyObject */) || + includes & 67108864 /* NonPrimitive */ && includes & (67238908 /* DisjointDomains */ & ~67108864 /* NonPrimitive */) || + includes & 132 /* StringLike */ && includes & (67238908 /* DisjointDomains */ & ~132 /* StringLike */) || + includes & 296 /* NumberLike */ && includes & (67238908 /* DisjointDomains */ & ~296 /* NumberLike */) || + includes & 2112 /* BigIntLike */ && includes & (67238908 /* DisjointDomains */ & ~2112 /* BigIntLike */) || + includes & 12288 /* ESSymbolLike */ && includes & (67238908 /* DisjointDomains */ & ~12288 /* ESSymbolLike */) || + includes & 49152 /* VoidLike */ && includes & (67238908 /* DisjointDomains */ & ~49152 /* VoidLike */)) { + return neverType; + } + if (includes & 1 /* Any */) { + return includes & 8388608 /* IncludesWildcard */ ? wildcardType : anyType; + } + if (!strictNullChecks && includes & 98304 /* Nullable */) { + return includes & 32768 /* Undefined */ ? undefinedType : nullType; + } + if (includes & 4 /* String */ && includes & 128 /* StringLiteral */ || + includes & 8 /* Number */ && includes & 256 /* NumberLiteral */ || + includes & 64 /* BigInt */ && includes & 2048 /* BigIntLiteral */ || + includes & 4096 /* ESSymbol */ && includes & 8192 /* UniqueESSymbol */) { + removeRedundantPrimitiveTypes(typeSet, includes); + } + if (includes & 16777216 /* IncludesEmptyObject */ && includes & 524288 /* Object */) { + ts.orderedRemoveItemAt(typeSet, ts.findIndex(typeSet, isEmptyAnonymousObjectType)); + } + if (typeSet.length === 0) { + return unknownType; + } + if (typeSet.length === 1) { + return typeSet[0]; + } + var id = getTypeListId(typeSet); + var result = intersectionTypes.get(id); + if (!result) { + if (includes & 1048576 /* Union */) { + if (intersectUnionsOfPrimitiveTypes(typeSet)) { + // When the intersection creates a reduced set (which might mean that *all* union types have + // disappeared), we restart the operation to get a new set of combined flags. Once we have + // reduced we'll never reduce again, so this occurs at most once. + result = getIntersectionType(typeSet, aliasSymbol, aliasTypeArguments); + } + else if (extractIrreducible(typeSet, 32768 /* Undefined */)) { + result = getUnionType([getIntersectionType(typeSet), undefinedType], 1 /* Literal */, aliasSymbol, aliasTypeArguments); + } + else if (extractIrreducible(typeSet, 65536 /* Null */)) { + result = getUnionType([getIntersectionType(typeSet), nullType], 1 /* Literal */, aliasSymbol, aliasTypeArguments); + } + else { + // We are attempting to construct a type of the form X & (A | B) & Y. Transform this into a type of + // the form X & A & Y | X & B & Y and recursively reduce until no union type constituents remain. + // If the estimated size of the resulting union type exceeds 100000 constituents, report an error. + var size = ts.reduceLeft(typeSet, function (n, t) { return n * (t.flags & 1048576 /* Union */ ? t.types.length : 1); }, 1); + if (size >= 100000) { + error(currentNode, ts.Diagnostics.Expression_produces_a_union_type_that_is_too_complex_to_represent); + return errorType; + } + var unionIndex_1 = ts.findIndex(typeSet, function (t) { return (t.flags & 1048576 /* Union */) !== 0; }); + var unionType = typeSet[unionIndex_1]; + result = getUnionType(ts.map(unionType.types, function (t) { return getIntersectionType(ts.replaceElement(typeSet, unionIndex_1, t)); }), 1 /* Literal */, aliasSymbol, aliasTypeArguments); + } + } + else { + result = createIntersectionType(typeSet, aliasSymbol, aliasTypeArguments); + } + intersectionTypes.set(id, result); + } + return result; + } + function getTypeFromIntersectionTypeNode(node) { + var links = getNodeLinks(node); + if (!links.resolvedType) { + var aliasSymbol = getAliasSymbolForTypeNode(node); + links.resolvedType = getIntersectionType(ts.map(node.types, getTypeFromTypeNode), aliasSymbol, getTypeArgumentsForAliasSymbol(aliasSymbol)); + } + return links.resolvedType; + } + function createIndexType(type, stringsOnly) { + var result = createType(4194304 /* Index */); + result.type = type; + result.stringsOnly = stringsOnly; + return result; + } + function getIndexTypeForGenericType(type, stringsOnly) { + return stringsOnly ? + type.resolvedStringIndexType || (type.resolvedStringIndexType = createIndexType(type, /*stringsOnly*/ true)) : + type.resolvedIndexType || (type.resolvedIndexType = createIndexType(type, /*stringsOnly*/ false)); + } + function getLiteralTypeFromPropertyName(name) { + if (ts.isPrivateIdentifier(name)) { + return neverType; + } + return ts.isIdentifier(name) ? getLiteralType(ts.unescapeLeadingUnderscores(name.escapedText)) : + getRegularTypeOfLiteralType(ts.isComputedPropertyName(name) ? checkComputedPropertyName(name) : checkExpression(name)); + } + function getBigIntLiteralType(node) { + return getLiteralType({ + negative: false, + base10Value: ts.parsePseudoBigInt(node.text) + }); + } + function getLiteralTypeFromProperty(prop, include) { + if (!(ts.getDeclarationModifierFlagsFromSymbol(prop) & 24 /* NonPublicAccessibilityModifier */)) { + var type = getSymbolLinks(getLateBoundSymbol(prop)).nameType; + if (!type && !ts.isKnownSymbol(prop)) { + if (prop.escapedName === "default" /* Default */) { + type = getLiteralType("default"); + } + else { + var name = prop.valueDeclaration && ts.getNameOfDeclaration(prop.valueDeclaration); + type = name && getLiteralTypeFromPropertyName(name) || getLiteralType(ts.symbolName(prop)); + } + } + if (type && type.flags & include) { + return type; + } + } + return neverType; + } + function getLiteralTypeFromProperties(type, include) { + return getUnionType(ts.map(getPropertiesOfType(type), function (p) { return getLiteralTypeFromProperty(p, include); })); + } + function getNonEnumNumberIndexInfo(type) { + var numberIndexInfo = getIndexInfoOfType(type, 1 /* Number */); + return numberIndexInfo !== enumNumberIndexInfo ? numberIndexInfo : undefined; + } + function getIndexType(type, stringsOnly, noIndexSignatures) { + if (stringsOnly === void 0) { stringsOnly = keyofStringsOnly; } + type = getReducedType(type); + return type.flags & 1048576 /* Union */ ? getIntersectionType(ts.map(type.types, function (t) { return getIndexType(t, stringsOnly, noIndexSignatures); })) : + type.flags & 2097152 /* Intersection */ ? getUnionType(ts.map(type.types, function (t) { return getIndexType(t, stringsOnly, noIndexSignatures); })) : + maybeTypeOfKind(type, 58982400 /* InstantiableNonPrimitive */) ? getIndexTypeForGenericType(type, stringsOnly) : + ts.getObjectFlags(type) & 32 /* Mapped */ ? filterType(getConstraintTypeFromMappedType(type), function (t) { return !(noIndexSignatures && t.flags & (1 /* Any */ | 4 /* String */)); }) : + type === wildcardType ? wildcardType : + type.flags & 2 /* Unknown */ ? neverType : + type.flags & (1 /* Any */ | 131072 /* Never */) ? keyofConstraintType : + stringsOnly ? !noIndexSignatures && getIndexInfoOfType(type, 0 /* String */) ? stringType : getLiteralTypeFromProperties(type, 128 /* StringLiteral */) : + !noIndexSignatures && getIndexInfoOfType(type, 0 /* String */) ? getUnionType([stringType, numberType, getLiteralTypeFromProperties(type, 8192 /* UniqueESSymbol */)]) : + getNonEnumNumberIndexInfo(type) ? getUnionType([numberType, getLiteralTypeFromProperties(type, 128 /* StringLiteral */ | 8192 /* UniqueESSymbol */)]) : + getLiteralTypeFromProperties(type, 8576 /* StringOrNumberLiteralOrUnique */); + } + function getExtractStringType(type) { + if (keyofStringsOnly) { + return type; + } + var extractTypeAlias = getGlobalExtractSymbol(); + return extractTypeAlias ? getTypeAliasInstantiation(extractTypeAlias, [type, stringType]) : stringType; + } + function getIndexTypeOrString(type) { + var indexType = getExtractStringType(getIndexType(type)); + return indexType.flags & 131072 /* Never */ ? stringType : indexType; + } + function getTypeFromTypeOperatorNode(node) { + var links = getNodeLinks(node); + if (!links.resolvedType) { + switch (node.operator) { + case 134 /* KeyOfKeyword */: + links.resolvedType = getIndexType(getTypeFromTypeNode(node.type)); + break; + case 147 /* UniqueKeyword */: + links.resolvedType = node.type.kind === 144 /* SymbolKeyword */ + ? getESSymbolLikeTypeForNode(ts.walkUpParenthesizedTypes(node.parent)) + : errorType; + break; + case 138 /* ReadonlyKeyword */: + links.resolvedType = getTypeFromTypeNode(node.type); + break; + default: + throw ts.Debug.assertNever(node.operator); + } + } + return links.resolvedType; + } + function createIndexedAccessType(objectType, indexType, aliasSymbol, aliasTypeArguments) { + var type = createType(8388608 /* IndexedAccess */); + type.objectType = objectType; + type.indexType = indexType; + type.aliasSymbol = aliasSymbol; + type.aliasTypeArguments = aliasTypeArguments; + return type; + } + /** + * Returns if a type is or consists of a JSLiteral object type + * In addition to objects which are directly literals, + * * unions where every element is a jsliteral + * * intersections where at least one element is a jsliteral + * * and instantiable types constrained to a jsliteral + * Should all count as literals and not print errors on access or assignment of possibly existing properties. + * This mirrors the behavior of the index signature propagation, to which this behaves similarly (but doesn't affect assignability or inference). + */ + function isJSLiteralType(type) { + if (noImplicitAny) { + return false; // Flag is meaningless under `noImplicitAny` mode + } + if (ts.getObjectFlags(type) & 16384 /* JSLiteral */) { + return true; + } + if (type.flags & 1048576 /* Union */) { + return ts.every(type.types, isJSLiteralType); + } + if (type.flags & 2097152 /* Intersection */) { + return ts.some(type.types, isJSLiteralType); + } + if (type.flags & 63176704 /* Instantiable */) { + return isJSLiteralType(getResolvedBaseConstraint(type)); + } + return false; + } + function getPropertyNameFromIndex(indexType, accessNode) { + var accessExpression = accessNode && accessNode.kind === 195 /* ElementAccessExpression */ ? accessNode : undefined; + return isTypeUsableAsPropertyName(indexType) ? + getPropertyNameFromType(indexType) : + accessExpression && checkThatExpressionIsProperSymbolReference(accessExpression.argumentExpression, indexType, /*reportError*/ false) ? + ts.getPropertyNameForKnownSymbolName(ts.idText(accessExpression.argumentExpression.name)) : + accessNode && ts.isPropertyName(accessNode) ? + // late bound names are handled in the first branch, so here we only need to handle normal names + ts.getPropertyNameForPropertyNameNode(accessNode) : + undefined; + } + function getPropertyTypeForIndexType(originalObjectType, objectType, indexType, fullIndexType, suppressNoImplicitAnyError, accessNode, accessFlags) { + var accessExpression = accessNode && accessNode.kind === 195 /* ElementAccessExpression */ ? accessNode : undefined; + var propName = accessNode && ts.isPrivateIdentifier(accessNode) ? undefined : getPropertyNameFromIndex(indexType, accessNode); + if (propName !== undefined) { + var prop = getPropertyOfType(objectType, propName); + if (prop) { + if (accessExpression) { + markPropertyAsReferenced(prop, accessExpression, /*isThisAccess*/ accessExpression.expression.kind === 104 /* ThisKeyword */); + if (isAssignmentToReadonlyEntity(accessExpression, prop, ts.getAssignmentTargetKind(accessExpression))) { + error(accessExpression.argumentExpression, ts.Diagnostics.Cannot_assign_to_0_because_it_is_a_read_only_property, symbolToString(prop)); + return undefined; + } + if (accessFlags & 4 /* CacheSymbol */) { + getNodeLinks(accessNode).resolvedSymbol = prop; + } + } + var propType = getTypeOfSymbol(prop); + return accessExpression && ts.getAssignmentTargetKind(accessExpression) !== 1 /* Definite */ ? + getFlowTypeOfReference(accessExpression, propType) : + propType; + } + if (everyType(objectType, isTupleType) && isNumericLiteralName(propName) && +propName >= 0) { + if (accessNode && everyType(objectType, function (t) { return !t.target.hasRestElement; }) && !(accessFlags & 8 /* NoTupleBoundsCheck */)) { + var indexNode = getIndexNodeForAccessExpression(accessNode); + if (isTupleType(objectType)) { + error(indexNode, ts.Diagnostics.Tuple_type_0_of_length_1_has_no_element_at_index_2, typeToString(objectType), getTypeReferenceArity(objectType), ts.unescapeLeadingUnderscores(propName)); + } + else { + error(indexNode, ts.Diagnostics.Property_0_does_not_exist_on_type_1, ts.unescapeLeadingUnderscores(propName), typeToString(objectType)); + } + } + errorIfWritingToReadonlyIndex(getIndexInfoOfType(objectType, 1 /* Number */)); + return mapType(objectType, function (t) { return getRestTypeOfTupleType(t) || undefinedType; }); + } + } + if (!(indexType.flags & 98304 /* Nullable */) && isTypeAssignableToKind(indexType, 132 /* StringLike */ | 296 /* NumberLike */ | 12288 /* ESSymbolLike */)) { + if (objectType.flags & (1 /* Any */ | 131072 /* Never */)) { + return objectType; + } + var stringIndexInfo = getIndexInfoOfType(objectType, 0 /* String */); + var indexInfo = isTypeAssignableToKind(indexType, 296 /* NumberLike */) && getIndexInfoOfType(objectType, 1 /* Number */) || stringIndexInfo; + if (indexInfo) { + if (accessFlags & 1 /* NoIndexSignatures */ && indexInfo === stringIndexInfo) { + if (accessExpression) { + error(accessExpression, ts.Diagnostics.Type_0_cannot_be_used_to_index_type_1, typeToString(indexType), typeToString(originalObjectType)); + } + return undefined; + } + if (accessNode && !isTypeAssignableToKind(indexType, 4 /* String */ | 8 /* Number */)) { + var indexNode = getIndexNodeForAccessExpression(accessNode); + error(indexNode, ts.Diagnostics.Type_0_cannot_be_used_as_an_index_type, typeToString(indexType)); + return indexInfo.type; + } + errorIfWritingToReadonlyIndex(indexInfo); + return indexInfo.type; + } + if (indexType.flags & 131072 /* Never */) { + return neverType; + } + if (isJSLiteralType(objectType)) { + return anyType; + } + if (accessExpression && !isConstEnumObjectType(objectType)) { + if (objectType.symbol === globalThisSymbol && propName !== undefined && globalThisSymbol.exports.has(propName) && (globalThisSymbol.exports.get(propName).flags & 418 /* BlockScoped */)) { + error(accessExpression, ts.Diagnostics.Property_0_does_not_exist_on_type_1, ts.unescapeLeadingUnderscores(propName), typeToString(objectType)); + } + else if (noImplicitAny && !compilerOptions.suppressImplicitAnyIndexErrors && !suppressNoImplicitAnyError) { + if (propName !== undefined && typeHasStaticProperty(propName, objectType)) { + error(accessExpression, ts.Diagnostics.Property_0_is_a_static_member_of_type_1, propName, typeToString(objectType)); + } + else if (getIndexTypeOfType(objectType, 1 /* Number */)) { + error(accessExpression.argumentExpression, ts.Diagnostics.Element_implicitly_has_an_any_type_because_index_expression_is_not_of_type_number); + } + else { + var suggestion = void 0; + if (propName !== undefined && (suggestion = getSuggestionForNonexistentProperty(propName, objectType))) { + if (suggestion !== undefined) { + error(accessExpression.argumentExpression, ts.Diagnostics.Property_0_does_not_exist_on_type_1_Did_you_mean_2, propName, typeToString(objectType), suggestion); + } + } + else { + var suggestion_1 = getSuggestionForNonexistentIndexSignature(objectType, accessExpression, indexType); + if (suggestion_1 !== undefined) { + error(accessExpression, ts.Diagnostics.Element_implicitly_has_an_any_type_because_type_0_has_no_index_signature_Did_you_mean_to_call_1, typeToString(objectType), suggestion_1); + } + else { + var errorInfo = void 0; + if (indexType.flags & 1024 /* EnumLiteral */) { + errorInfo = ts.chainDiagnosticMessages(/* details */ undefined, ts.Diagnostics.Property_0_does_not_exist_on_type_1, "[" + typeToString(indexType) + "]", typeToString(objectType)); + } + else if (indexType.flags & 8192 /* UniqueESSymbol */) { + var symbolName_2 = getFullyQualifiedName(indexType.symbol, accessExpression); + errorInfo = ts.chainDiagnosticMessages(/* details */ undefined, ts.Diagnostics.Property_0_does_not_exist_on_type_1, "[" + symbolName_2 + "]", typeToString(objectType)); + } + else if (indexType.flags & 128 /* StringLiteral */) { + errorInfo = ts.chainDiagnosticMessages(/* details */ undefined, ts.Diagnostics.Property_0_does_not_exist_on_type_1, indexType.value, typeToString(objectType)); + } + else if (indexType.flags & 256 /* NumberLiteral */) { + errorInfo = ts.chainDiagnosticMessages(/* details */ undefined, ts.Diagnostics.Property_0_does_not_exist_on_type_1, indexType.value, typeToString(objectType)); + } + else if (indexType.flags & (8 /* Number */ | 4 /* String */)) { + errorInfo = ts.chainDiagnosticMessages(/* details */ undefined, ts.Diagnostics.No_index_signature_with_a_parameter_of_type_0_was_found_on_type_1, typeToString(indexType), typeToString(objectType)); + } + errorInfo = ts.chainDiagnosticMessages(errorInfo, ts.Diagnostics.Element_implicitly_has_an_any_type_because_expression_of_type_0_can_t_be_used_to_index_type_1, typeToString(fullIndexType), typeToString(objectType)); + diagnostics.add(ts.createDiagnosticForNodeFromMessageChain(accessExpression, errorInfo)); + } + } + } + } + return undefined; + } + } + if (isJSLiteralType(objectType)) { + return anyType; + } + if (accessNode) { + var indexNode = getIndexNodeForAccessExpression(accessNode); + if (indexType.flags & (128 /* StringLiteral */ | 256 /* NumberLiteral */)) { + error(indexNode, ts.Diagnostics.Property_0_does_not_exist_on_type_1, "" + indexType.value, typeToString(objectType)); + } + else if (indexType.flags & (4 /* String */ | 8 /* Number */)) { + error(indexNode, ts.Diagnostics.Type_0_has_no_matching_index_signature_for_type_1, typeToString(objectType), typeToString(indexType)); + } + else { + error(indexNode, ts.Diagnostics.Type_0_cannot_be_used_as_an_index_type, typeToString(indexType)); + } + } + if (isTypeAny(indexType)) { + return indexType; + } + return undefined; + function errorIfWritingToReadonlyIndex(indexInfo) { + if (indexInfo && indexInfo.isReadonly && accessExpression && (ts.isAssignmentTarget(accessExpression) || ts.isDeleteTarget(accessExpression))) { + error(accessExpression, ts.Diagnostics.Index_signature_in_type_0_only_permits_reading, typeToString(objectType)); + } + } + } + function getIndexNodeForAccessExpression(accessNode) { + return accessNode.kind === 195 /* ElementAccessExpression */ ? accessNode.argumentExpression : + accessNode.kind === 185 /* IndexedAccessType */ ? accessNode.indexType : + accessNode.kind === 154 /* ComputedPropertyName */ ? accessNode.expression : + accessNode; + } + function isGenericObjectType(type) { + if (type.flags & 3145728 /* UnionOrIntersection */) { + if (!(type.objectFlags & 4194304 /* IsGenericObjectTypeComputed */)) { + type.objectFlags |= 4194304 /* IsGenericObjectTypeComputed */ | + (ts.some(type.types, isGenericObjectType) ? 8388608 /* IsGenericObjectType */ : 0); + } + return !!(type.objectFlags & 8388608 /* IsGenericObjectType */); + } + return !!(type.flags & 58982400 /* InstantiableNonPrimitive */) || isGenericMappedType(type); + } + function isGenericIndexType(type) { + if (type.flags & 3145728 /* UnionOrIntersection */) { + if (!(type.objectFlags & 16777216 /* IsGenericIndexTypeComputed */)) { + type.objectFlags |= 16777216 /* IsGenericIndexTypeComputed */ | + (ts.some(type.types, isGenericIndexType) ? 33554432 /* IsGenericIndexType */ : 0); + } + return !!(type.objectFlags & 33554432 /* IsGenericIndexType */); + } + return !!(type.flags & (58982400 /* InstantiableNonPrimitive */ | 4194304 /* Index */)); + } + function isThisTypeParameter(type) { + return !!(type.flags & 262144 /* TypeParameter */ && type.isThisType); + } + function getSimplifiedType(type, writing) { + return type.flags & 8388608 /* IndexedAccess */ ? getSimplifiedIndexedAccessType(type, writing) : + type.flags & 16777216 /* Conditional */ ? getSimplifiedConditionalType(type, writing) : + type; + } + function distributeIndexOverObjectType(objectType, indexType, writing) { + // (T | U)[K] -> T[K] | U[K] (reading) + // (T | U)[K] -> T[K] & U[K] (writing) + // (T & U)[K] -> T[K] & U[K] + if (objectType.flags & 3145728 /* UnionOrIntersection */) { + var types = ts.map(objectType.types, function (t) { return getSimplifiedType(getIndexedAccessType(t, indexType), writing); }); + return objectType.flags & 2097152 /* Intersection */ || writing ? getIntersectionType(types) : getUnionType(types); + } + } + function distributeObjectOverIndexType(objectType, indexType, writing) { + // T[A | B] -> T[A] | T[B] (reading) + // T[A | B] -> T[A] & T[B] (writing) + if (indexType.flags & 1048576 /* Union */) { + var types = ts.map(indexType.types, function (t) { return getSimplifiedType(getIndexedAccessType(objectType, t), writing); }); + return writing ? getIntersectionType(types) : getUnionType(types); + } + } + function unwrapSubstitution(type) { + if (type.flags & 33554432 /* Substitution */) { + return type.substitute; + } + return type; + } + // Transform an indexed access to a simpler form, if possible. Return the simpler form, or return + // the type itself if no transformation is possible. The writing flag indicates that the type is + // the target of an assignment. + function getSimplifiedIndexedAccessType(type, writing) { + var cache = writing ? "simplifiedForWriting" : "simplifiedForReading"; + if (type[cache]) { + return type[cache] === circularConstraintType ? type : type[cache]; + } + type[cache] = circularConstraintType; + // We recursively simplify the object type as it may in turn be an indexed access type. For example, with + // '{ [P in T]: { [Q in U]: number } }[T][U]' we want to first simplify the inner indexed access type. + var objectType = unwrapSubstitution(getSimplifiedType(type.objectType, writing)); + var indexType = getSimplifiedType(type.indexType, writing); + // T[A | B] -> T[A] | T[B] (reading) + // T[A | B] -> T[A] & T[B] (writing) + var distributedOverIndex = distributeObjectOverIndexType(objectType, indexType, writing); + if (distributedOverIndex) { + return type[cache] = distributedOverIndex; + } + // Only do the inner distributions if the index can no longer be instantiated to cause index distribution again + if (!(indexType.flags & 63176704 /* Instantiable */)) { + // (T | U)[K] -> T[K] | U[K] (reading) + // (T | U)[K] -> T[K] & U[K] (writing) + // (T & U)[K] -> T[K] & U[K] + var distributedOverObject = distributeIndexOverObjectType(objectType, indexType, writing); + if (distributedOverObject) { + return type[cache] = distributedOverObject; + } + } + // So ultimately (reading): + // ((A & B) | C)[K1 | K2] -> ((A & B) | C)[K1] | ((A & B) | C)[K2] -> (A & B)[K1] | C[K1] | (A & B)[K2] | C[K2] -> (A[K1] & B[K1]) | C[K1] | (A[K2] & B[K2]) | C[K2] + // If the object type is a mapped type { [P in K]: E }, where K is generic, instantiate E using a mapper + // that substitutes the index type for P. For example, for an index access { [P in K]: Box }[X], we + // construct the type Box. + if (isGenericMappedType(objectType)) { + return type[cache] = mapType(substituteIndexedMappedType(objectType, type.indexType), function (t) { return getSimplifiedType(t, writing); }); + } + return type[cache] = type; + } + function getSimplifiedConditionalType(type, writing) { + var checkType = type.checkType; + var extendsType = type.extendsType; + var trueType = getTrueTypeFromConditionalType(type); + var falseType = getFalseTypeFromConditionalType(type); + // Simplifications for types of the form `T extends U ? T : never` and `T extends U ? never : T`. + if (falseType.flags & 131072 /* Never */ && getActualTypeVariable(trueType) === getActualTypeVariable(checkType)) { + if (checkType.flags & 1 /* Any */ || isTypeAssignableTo(getRestrictiveInstantiation(checkType), getRestrictiveInstantiation(extendsType))) { // Always true + return getSimplifiedType(trueType, writing); + } + else if (isIntersectionEmpty(checkType, extendsType)) { // Always false + return neverType; + } + } + else if (trueType.flags & 131072 /* Never */ && getActualTypeVariable(falseType) === getActualTypeVariable(checkType)) { + if (!(checkType.flags & 1 /* Any */) && isTypeAssignableTo(getRestrictiveInstantiation(checkType), getRestrictiveInstantiation(extendsType))) { // Always true + return neverType; + } + else if (checkType.flags & 1 /* Any */ || isIntersectionEmpty(checkType, extendsType)) { // Always false + return getSimplifiedType(falseType, writing); + } + } + return type; + } + /** + * Invokes union simplification logic to determine if an intersection is considered empty as a union constituent + */ + function isIntersectionEmpty(type1, type2) { + return !!(getUnionType([intersectTypes(type1, type2), neverType]).flags & 131072 /* Never */); + } + function substituteIndexedMappedType(objectType, index) { + var mapper = createTypeMapper([getTypeParameterFromMappedType(objectType)], [index]); + var templateMapper = combineTypeMappers(objectType.mapper, mapper); + return instantiateType(getTemplateTypeFromMappedType(objectType), templateMapper); + } + function getIndexedAccessType(objectType, indexType, accessNode, aliasSymbol, aliasTypeArguments) { + return getIndexedAccessTypeOrUndefined(objectType, indexType, accessNode, 0 /* None */, aliasSymbol, aliasTypeArguments) || (accessNode ? errorType : unknownType); + } + function getIndexedAccessTypeOrUndefined(objectType, indexType, accessNode, accessFlags, aliasSymbol, aliasTypeArguments) { + if (accessFlags === void 0) { accessFlags = 0 /* None */; } + if (objectType === wildcardType || indexType === wildcardType) { + return wildcardType; + } + // If the object type has a string index signature and no other members we know that the result will + // always be the type of that index signature and we can simplify accordingly. + if (isStringIndexSignatureOnlyType(objectType) && !(indexType.flags & 98304 /* Nullable */) && isTypeAssignableToKind(indexType, 4 /* String */ | 8 /* Number */)) { + indexType = stringType; + } + // If the index type is generic, or if the object type is generic and doesn't originate in an expression, + // we are performing a higher-order index access where we cannot meaningfully access the properties of the + // object type. Note that for a generic T and a non-generic K, we eagerly resolve T[K] if it originates in + // an expression. This is to preserve backwards compatibility. For example, an element access 'this["foo"]' + // has always been resolved eagerly using the constraint type of 'this' at the given location. + if (isGenericIndexType(indexType) || !(accessNode && accessNode.kind !== 185 /* IndexedAccessType */) && isGenericObjectType(objectType)) { + if (objectType.flags & 3 /* AnyOrUnknown */) { + return objectType; + } + // Defer the operation by creating an indexed access type. + var id = objectType.id + "," + indexType.id; + var type = indexedAccessTypes.get(id); + if (!type) { + indexedAccessTypes.set(id, type = createIndexedAccessType(objectType, indexType, aliasSymbol, aliasTypeArguments)); + } + return type; + } + // In the following we resolve T[K] to the type of the property in T selected by K. + // We treat boolean as different from other unions to improve errors; + // skipping straight to getPropertyTypeForIndexType gives errors with 'boolean' instead of 'true'. + var apparentObjectType = getReducedApparentType(objectType); + if (indexType.flags & 1048576 /* Union */ && !(indexType.flags & 16 /* Boolean */)) { + var propTypes = []; + var wasMissingProp = false; + for (var _i = 0, _a = indexType.types; _i < _a.length; _i++) { + var t = _a[_i]; + var propType = getPropertyTypeForIndexType(objectType, apparentObjectType, t, indexType, wasMissingProp, accessNode, accessFlags); + if (propType) { + propTypes.push(propType); + } + else if (!accessNode) { + // If there's no error node, we can immeditely stop, since error reporting is off + return undefined; + } + else { + // Otherwise we set a flag and return at the end of the loop so we still mark all errors + wasMissingProp = true; + } + } + if (wasMissingProp) { + return undefined; + } + return accessFlags & 2 /* Writing */ ? getIntersectionType(propTypes, aliasSymbol, aliasTypeArguments) : getUnionType(propTypes, 1 /* Literal */, aliasSymbol, aliasTypeArguments); + } + return getPropertyTypeForIndexType(objectType, apparentObjectType, indexType, indexType, /* supressNoImplicitAnyError */ false, accessNode, accessFlags | 4 /* CacheSymbol */); + } + function getTypeFromIndexedAccessTypeNode(node) { + var links = getNodeLinks(node); + if (!links.resolvedType) { + var objectType = getTypeFromTypeNode(node.objectType); + var indexType = getTypeFromTypeNode(node.indexType); + var potentialAlias = getAliasSymbolForTypeNode(node); + var resolved = getIndexedAccessType(objectType, indexType, node, potentialAlias, getTypeArgumentsForAliasSymbol(potentialAlias)); + links.resolvedType = resolved.flags & 8388608 /* IndexedAccess */ && + resolved.objectType === objectType && + resolved.indexType === indexType ? + getConditionalFlowTypeOfType(resolved, node) : resolved; + } + return links.resolvedType; + } + function getTypeFromMappedTypeNode(node) { + var links = getNodeLinks(node); + if (!links.resolvedType) { + var type = createObjectType(32 /* Mapped */, node.symbol); + type.declaration = node; + type.aliasSymbol = getAliasSymbolForTypeNode(node); + type.aliasTypeArguments = getTypeArgumentsForAliasSymbol(type.aliasSymbol); + links.resolvedType = type; + // Eagerly resolve the constraint type which forces an error if the constraint type circularly + // references itself through one or more type aliases. + getConstraintTypeFromMappedType(type); + } + return links.resolvedType; + } + function getActualTypeVariable(type) { + if (type.flags & 33554432 /* Substitution */) { + return type.baseType; + } + if (type.flags & 8388608 /* IndexedAccess */ && (type.objectType.flags & 33554432 /* Substitution */ || + type.indexType.flags & 33554432 /* Substitution */)) { + return getIndexedAccessType(getActualTypeVariable(type.objectType), getActualTypeVariable(type.indexType)); + } + return type; + } + function getConditionalType(root, mapper) { + var result; + var extraTypes; + var _loop_12 = function () { + var checkType = instantiateType(root.checkType, mapper); + var checkTypeInstantiable = isGenericObjectType(checkType) || isGenericIndexType(checkType); + var extendsType = instantiateType(root.extendsType, mapper); + if (checkType === wildcardType || extendsType === wildcardType) { + return { value: wildcardType }; + } + var combinedMapper = void 0; + if (root.inferTypeParameters) { + var context = createInferenceContext(root.inferTypeParameters, /*signature*/ undefined, 0 /* None */); + // We skip inference of the possible `infer` types unles the `extendsType` _is_ an infer type + // if it was, it's trivial to say that extendsType = checkType, however such a pattern is used to + // "reset" the type being build up during constraint calculation and avoid making an apparently "infinite" constraint + // so in those cases we refain from performing inference and retain the uninfered type parameter + if (!checkTypeInstantiable || !ts.some(root.inferTypeParameters, function (t) { return t === extendsType; })) { + // We don't want inferences from constraints as they may cause us to eagerly resolve the + // conditional type instead of deferring resolution. Also, we always want strict function + // types rules (i.e. proper contravariance) for inferences. + inferTypes(context.inferences, checkType, extendsType, 128 /* NoConstraints */ | 256 /* AlwaysStrict */); + } + combinedMapper = mergeTypeMappers(mapper, context.mapper); + } + // Instantiate the extends type including inferences for 'infer T' type parameters + var inferredExtendsType = combinedMapper ? instantiateType(root.extendsType, combinedMapper) : extendsType; + // We attempt to resolve the conditional type only when the check and extends types are non-generic + if (!checkTypeInstantiable && !isGenericObjectType(inferredExtendsType) && !isGenericIndexType(inferredExtendsType)) { + // Return falseType for a definitely false extends check. We check an instantiations of the two + // types with type parameters mapped to the wildcard type, the most permissive instantiations + // possible (the wildcard type is assignable to and from all types). If those are not related, + // then no instantiations will be and we can just return the false branch type. + if (!(inferredExtendsType.flags & 3 /* AnyOrUnknown */) && (checkType.flags & 1 /* Any */ || !isTypeAssignableTo(getPermissiveInstantiation(checkType), getPermissiveInstantiation(inferredExtendsType)))) { + // Return union of trueType and falseType for 'any' since it matches anything + if (checkType.flags & 1 /* Any */) { + (extraTypes || (extraTypes = [])).push(instantiateTypeWithoutDepthIncrease(root.trueType, combinedMapper || mapper)); + } + // If falseType is an immediately nested conditional type that isn't distributive or has an + // identical checkType, switch to that type and loop. + var falseType_1 = root.falseType; + if (falseType_1.flags & 16777216 /* Conditional */) { + var newRoot = falseType_1.root; + if (newRoot.node.parent === root.node && (!newRoot.isDistributive || newRoot.checkType === root.checkType)) { + root = newRoot; + return "continue"; + } + } + result = instantiateTypeWithoutDepthIncrease(falseType_1, mapper); + return "break"; + } + // Return trueType for a definitely true extends check. We check instantiations of the two + // types with type parameters mapped to their restrictive form, i.e. a form of the type parameter + // that has no constraint. This ensures that, for example, the type + // type Foo = T extends { x: string } ? string : number + // doesn't immediately resolve to 'string' instead of being deferred. + if (inferredExtendsType.flags & 3 /* AnyOrUnknown */ || isTypeAssignableTo(getRestrictiveInstantiation(checkType), getRestrictiveInstantiation(inferredExtendsType))) { + result = instantiateTypeWithoutDepthIncrease(root.trueType, combinedMapper || mapper); + return "break"; + } + } + // Return a deferred type for a check that is neither definitely true nor definitely false + var erasedCheckType = getActualTypeVariable(checkType); + result = createType(16777216 /* Conditional */); + result.root = root; + result.checkType = erasedCheckType; + result.extendsType = extendsType; + result.mapper = mapper; + result.combinedMapper = combinedMapper; + result.aliasSymbol = root.aliasSymbol; + result.aliasTypeArguments = instantiateTypes(root.aliasTypeArguments, mapper); // TODO: GH#18217 + return "break"; + }; + // We loop here for an immediately nested conditional type in the false position, effectively treating + // types of the form 'A extends B ? X : C extends D ? Y : E extends F ? Z : ...' as a single construct for + // purposes of resolution. This means such types aren't subject to the instatiation depth limiter. + while (true) { + var state_4 = _loop_12(); + if (typeof state_4 === "object") + return state_4.value; + if (state_4 === "break") + break; + } + return extraTypes ? getUnionType(ts.append(extraTypes, result)) : result; + } + function getTrueTypeFromConditionalType(type) { + return type.resolvedTrueType || (type.resolvedTrueType = instantiateType(type.root.trueType, type.mapper)); + } + function getFalseTypeFromConditionalType(type) { + return type.resolvedFalseType || (type.resolvedFalseType = instantiateType(type.root.falseType, type.mapper)); + } + function getInferredTrueTypeFromConditionalType(type) { + return type.resolvedInferredTrueType || (type.resolvedInferredTrueType = type.combinedMapper ? instantiateType(type.root.trueType, type.combinedMapper) : getTrueTypeFromConditionalType(type)); + } + function getInferTypeParameters(node) { + var result; + if (node.locals) { + node.locals.forEach(function (symbol) { + if (symbol.flags & 262144 /* TypeParameter */) { + result = ts.append(result, getDeclaredTypeOfSymbol(symbol)); + } + }); + } + return result; + } + function getTypeFromConditionalTypeNode(node) { + var links = getNodeLinks(node); + if (!links.resolvedType) { + var checkType = getTypeFromTypeNode(node.checkType); + var aliasSymbol = getAliasSymbolForTypeNode(node); + var aliasTypeArguments = getTypeArgumentsForAliasSymbol(aliasSymbol); + var allOuterTypeParameters = getOuterTypeParameters(node, /*includeThisTypes*/ true); + var outerTypeParameters = aliasTypeArguments ? allOuterTypeParameters : ts.filter(allOuterTypeParameters, function (tp) { return isTypeParameterPossiblyReferenced(tp, node); }); + var root = { + node: node, + checkType: checkType, + extendsType: getTypeFromTypeNode(node.extendsType), + trueType: getTypeFromTypeNode(node.trueType), + falseType: getTypeFromTypeNode(node.falseType), + isDistributive: !!(checkType.flags & 262144 /* TypeParameter */), + inferTypeParameters: getInferTypeParameters(node), + outerTypeParameters: outerTypeParameters, + instantiations: undefined, + aliasSymbol: aliasSymbol, + aliasTypeArguments: aliasTypeArguments + }; + links.resolvedType = getConditionalType(root, /*mapper*/ undefined); + if (outerTypeParameters) { + root.instantiations = ts.createMap(); + root.instantiations.set(getTypeListId(outerTypeParameters), links.resolvedType); + } + } + return links.resolvedType; + } + function getTypeFromInferTypeNode(node) { + var links = getNodeLinks(node); + if (!links.resolvedType) { + links.resolvedType = getDeclaredTypeOfTypeParameter(getSymbolOfNode(node.typeParameter)); + } + return links.resolvedType; + } + function getIdentifierChain(node) { + if (ts.isIdentifier(node)) { + return [node]; + } + else { + return ts.append(getIdentifierChain(node.left), node.right); + } + } + function getTypeFromImportTypeNode(node) { + var links = getNodeLinks(node); + if (!links.resolvedType) { + if (node.isTypeOf && node.typeArguments) { // Only the non-typeof form can make use of type arguments + error(node, ts.Diagnostics.Type_arguments_cannot_be_used_here); + links.resolvedSymbol = unknownSymbol; + return links.resolvedType = errorType; + } + if (!ts.isLiteralImportTypeNode(node)) { + error(node.argument, ts.Diagnostics.String_literal_expected); + links.resolvedSymbol = unknownSymbol; + return links.resolvedType = errorType; + } + var targetMeaning = node.isTypeOf ? 111551 /* Value */ : node.flags & 4194304 /* JSDoc */ ? 111551 /* Value */ | 788968 /* Type */ : 788968 /* Type */; + // TODO: Future work: support unions/generics/whatever via a deferred import-type + var innerModuleSymbol = resolveExternalModuleName(node, node.argument.literal); + if (!innerModuleSymbol) { + links.resolvedSymbol = unknownSymbol; + return links.resolvedType = errorType; + } + var moduleSymbol = resolveExternalModuleSymbol(innerModuleSymbol, /*dontResolveAlias*/ false); + if (!ts.nodeIsMissing(node.qualifier)) { + var nameStack = getIdentifierChain(node.qualifier); + var currentNamespace = moduleSymbol; + var current = void 0; + while (current = nameStack.shift()) { + var meaning = nameStack.length ? 1920 /* Namespace */ : targetMeaning; + var next = getSymbol(getExportsOfSymbol(getMergedSymbol(resolveSymbol(currentNamespace))), current.escapedText, meaning); + if (!next) { + error(current, ts.Diagnostics.Namespace_0_has_no_exported_member_1, getFullyQualifiedName(currentNamespace), ts.declarationNameToString(current)); + return links.resolvedType = errorType; + } + getNodeLinks(current).resolvedSymbol = next; + getNodeLinks(current.parent).resolvedSymbol = next; + currentNamespace = next; + } + links.resolvedType = resolveImportSymbolType(node, links, currentNamespace, targetMeaning); + } + else { + if (moduleSymbol.flags & targetMeaning) { + links.resolvedType = resolveImportSymbolType(node, links, moduleSymbol, targetMeaning); + } + else { + var errorMessage = targetMeaning === 111551 /* Value */ + ? ts.Diagnostics.Module_0_does_not_refer_to_a_value_but_is_used_as_a_value_here + : ts.Diagnostics.Module_0_does_not_refer_to_a_type_but_is_used_as_a_type_here_Did_you_mean_typeof_import_0; + error(node, errorMessage, node.argument.literal.text); + links.resolvedSymbol = unknownSymbol; + links.resolvedType = errorType; + } + } + } + return links.resolvedType; + } + function resolveImportSymbolType(node, links, symbol, meaning) { + var resolvedSymbol = resolveSymbol(symbol); + links.resolvedSymbol = resolvedSymbol; + if (meaning === 111551 /* Value */) { + return getTypeOfSymbol(symbol); // intentionally doesn't use resolved symbol so type is cached as expected on the alias + } + else { + return getTypeReferenceType(node, resolvedSymbol); // getTypeReferenceType doesn't handle aliases - it must get the resolved symbol + } + } + function getTypeFromTypeLiteralOrFunctionOrConstructorTypeNode(node) { + var links = getNodeLinks(node); + if (!links.resolvedType) { + // Deferred resolution of members is handled by resolveObjectTypeMembers + var aliasSymbol = getAliasSymbolForTypeNode(node); + if (getMembersOfSymbol(node.symbol).size === 0 && !aliasSymbol) { + links.resolvedType = emptyTypeLiteralType; + } + else { + var type = createObjectType(16 /* Anonymous */, node.symbol); + type.aliasSymbol = aliasSymbol; + type.aliasTypeArguments = getTypeArgumentsForAliasSymbol(aliasSymbol); + if (ts.isJSDocTypeLiteral(node) && node.isArrayType) { + type = createArrayType(type); + } + links.resolvedType = type; + } + } + return links.resolvedType; + } + function getAliasSymbolForTypeNode(node) { + var host = node.parent; + while (ts.isParenthesizedTypeNode(host) || ts.isTypeOperatorNode(host) && host.operator === 138 /* ReadonlyKeyword */) { + host = host.parent; + } + return ts.isTypeAlias(host) ? getSymbolOfNode(host) : undefined; + } + function getTypeArgumentsForAliasSymbol(symbol) { + return symbol ? getLocalTypeParametersOfClassOrInterfaceOrTypeAlias(symbol) : undefined; + } + function isNonGenericObjectType(type) { + return !!(type.flags & 524288 /* Object */) && !isGenericMappedType(type); + } + function isEmptyObjectTypeOrSpreadsIntoEmptyObject(type) { + return isEmptyObjectType(type) || !!(type.flags & (65536 /* Null */ | 32768 /* Undefined */ | 528 /* BooleanLike */ | 296 /* NumberLike */ | 2112 /* BigIntLike */ | 132 /* StringLike */ | 1056 /* EnumLike */ | 67108864 /* NonPrimitive */ | 4194304 /* Index */)); + } + function isSinglePropertyAnonymousObjectType(type) { + return !!(type.flags & 524288 /* Object */) && + !!(ts.getObjectFlags(type) & 16 /* Anonymous */) && + (ts.length(getPropertiesOfType(type)) === 1 || ts.every(getPropertiesOfType(type), function (p) { return !!(p.flags & 16777216 /* Optional */); })); + } + function tryMergeUnionOfObjectTypeAndEmptyObject(type, readonly) { + if (type.types.length === 2) { + var firstType = type.types[0]; + var secondType = type.types[1]; + if (ts.every(type.types, isEmptyObjectTypeOrSpreadsIntoEmptyObject)) { + return isEmptyObjectType(firstType) ? firstType : isEmptyObjectType(secondType) ? secondType : emptyObjectType; + } + if (isEmptyObjectTypeOrSpreadsIntoEmptyObject(firstType) && isSinglePropertyAnonymousObjectType(secondType)) { + return getAnonymousPartialType(secondType); + } + if (isEmptyObjectTypeOrSpreadsIntoEmptyObject(secondType) && isSinglePropertyAnonymousObjectType(firstType)) { + return getAnonymousPartialType(firstType); + } + } + function getAnonymousPartialType(type) { + // gets the type as if it had been spread, but where everything in the spread is made optional + var members = ts.createSymbolTable(); + for (var _i = 0, _a = getPropertiesOfType(type); _i < _a.length; _i++) { + var prop = _a[_i]; + if (ts.getDeclarationModifierFlagsFromSymbol(prop) & (8 /* Private */ | 16 /* Protected */)) { + // do nothing, skip privates + } + else if (isSpreadableProperty(prop)) { + var isSetonlyAccessor = prop.flags & 65536 /* SetAccessor */ && !(prop.flags & 32768 /* GetAccessor */); + var flags = 4 /* Property */ | 16777216 /* Optional */; + var result = createSymbol(flags, prop.escapedName, readonly ? 8 /* Readonly */ : 0); + result.type = isSetonlyAccessor ? undefinedType : getTypeOfSymbol(prop); + result.declarations = prop.declarations; + result.nameType = getSymbolLinks(prop).nameType; + result.syntheticOrigin = prop; + members.set(prop.escapedName, result); + } + } + var spread = createAnonymousType(type.symbol, members, ts.emptyArray, ts.emptyArray, getIndexInfoOfType(type, 0 /* String */), getIndexInfoOfType(type, 1 /* Number */)); + spread.objectFlags |= 128 /* ObjectLiteral */ | 1048576 /* ContainsObjectOrArrayLiteral */; + return spread; + } + } + /** + * Since the source of spread types are object literals, which are not binary, + * this function should be called in a left folding style, with left = previous result of getSpreadType + * and right = the new element to be spread. + */ + function getSpreadType(left, right, symbol, objectFlags, readonly) { + if (left.flags & 1 /* Any */ || right.flags & 1 /* Any */) { + return anyType; + } + if (left.flags & 2 /* Unknown */ || right.flags & 2 /* Unknown */) { + return unknownType; + } + if (left.flags & 131072 /* Never */) { + return right; + } + if (right.flags & 131072 /* Never */) { + return left; + } + if (left.flags & 1048576 /* Union */) { + var merged = tryMergeUnionOfObjectTypeAndEmptyObject(left, readonly); + if (merged) { + return getSpreadType(merged, right, symbol, objectFlags, readonly); + } + return mapType(left, function (t) { return getSpreadType(t, right, symbol, objectFlags, readonly); }); + } + if (right.flags & 1048576 /* Union */) { + var merged = tryMergeUnionOfObjectTypeAndEmptyObject(right, readonly); + if (merged) { + return getSpreadType(left, merged, symbol, objectFlags, readonly); + } + return mapType(right, function (t) { return getSpreadType(left, t, symbol, objectFlags, readonly); }); + } + if (right.flags & (528 /* BooleanLike */ | 296 /* NumberLike */ | 2112 /* BigIntLike */ | 132 /* StringLike */ | 1056 /* EnumLike */ | 67108864 /* NonPrimitive */ | 4194304 /* Index */)) { + return left; + } + if (isGenericObjectType(left) || isGenericObjectType(right)) { + if (isEmptyObjectType(left)) { + return right; + } + // When the left type is an intersection, we may need to merge the last constituent of the + // intersection with the right type. For example when the left type is 'T & { a: string }' + // and the right type is '{ b: string }' we produce 'T & { a: string, b: string }'. + if (left.flags & 2097152 /* Intersection */) { + var types = left.types; + var lastLeft = types[types.length - 1]; + if (isNonGenericObjectType(lastLeft) && isNonGenericObjectType(right)) { + return getIntersectionType(ts.concatenate(types.slice(0, types.length - 1), [getSpreadType(lastLeft, right, symbol, objectFlags, readonly)])); + } + } + return getIntersectionType([left, right]); + } + var members = ts.createSymbolTable(); + var skippedPrivateMembers = ts.createUnderscoreEscapedMap(); + var stringIndexInfo; + var numberIndexInfo; + if (left === emptyObjectType) { + // for the first spread element, left === emptyObjectType, so take the right's string indexer + stringIndexInfo = getIndexInfoOfType(right, 0 /* String */); + numberIndexInfo = getIndexInfoOfType(right, 1 /* Number */); + } + else { + stringIndexInfo = unionSpreadIndexInfos(getIndexInfoOfType(left, 0 /* String */), getIndexInfoOfType(right, 0 /* String */)); + numberIndexInfo = unionSpreadIndexInfos(getIndexInfoOfType(left, 1 /* Number */), getIndexInfoOfType(right, 1 /* Number */)); + } + for (var _i = 0, _a = getPropertiesOfType(right); _i < _a.length; _i++) { + var rightProp = _a[_i]; + if (ts.getDeclarationModifierFlagsFromSymbol(rightProp) & (8 /* Private */ | 16 /* Protected */)) { + skippedPrivateMembers.set(rightProp.escapedName, true); + } + else if (isSpreadableProperty(rightProp)) { + members.set(rightProp.escapedName, getSpreadSymbol(rightProp, readonly)); + } + } + for (var _b = 0, _c = getPropertiesOfType(left); _b < _c.length; _b++) { + var leftProp = _c[_b]; + if (skippedPrivateMembers.has(leftProp.escapedName) || !isSpreadableProperty(leftProp)) { + continue; + } + if (members.has(leftProp.escapedName)) { + var rightProp = members.get(leftProp.escapedName); + var rightType = getTypeOfSymbol(rightProp); + if (rightProp.flags & 16777216 /* Optional */) { + var declarations = ts.concatenate(leftProp.declarations, rightProp.declarations); + var flags = 4 /* Property */ | (leftProp.flags & 16777216 /* Optional */); + var result = createSymbol(flags, leftProp.escapedName); + result.type = getUnionType([getTypeOfSymbol(leftProp), getTypeWithFacts(rightType, 524288 /* NEUndefined */)]); + result.leftSpread = leftProp; + result.rightSpread = rightProp; + result.declarations = declarations; + result.nameType = getSymbolLinks(leftProp).nameType; + members.set(leftProp.escapedName, result); + } + } + else { + members.set(leftProp.escapedName, getSpreadSymbol(leftProp, readonly)); + } + } + var spread = createAnonymousType(symbol, members, ts.emptyArray, ts.emptyArray, getIndexInfoWithReadonly(stringIndexInfo, readonly), getIndexInfoWithReadonly(numberIndexInfo, readonly)); + spread.objectFlags |= 128 /* ObjectLiteral */ | 1048576 /* ContainsObjectOrArrayLiteral */ | 1024 /* ContainsSpread */ | objectFlags; + return spread; + } + /** We approximate own properties as non-methods plus methods that are inside the object literal */ + function isSpreadableProperty(prop) { + return !ts.some(prop.declarations, ts.isPrivateIdentifierPropertyDeclaration) && + (!(prop.flags & (8192 /* Method */ | 32768 /* GetAccessor */ | 65536 /* SetAccessor */)) || + !prop.declarations.some(function (decl) { return ts.isClassLike(decl.parent); })); + } + function getSpreadSymbol(prop, readonly) { + var isSetonlyAccessor = prop.flags & 65536 /* SetAccessor */ && !(prop.flags & 32768 /* GetAccessor */); + if (!isSetonlyAccessor && readonly === isReadonlySymbol(prop)) { + return prop; + } + var flags = 4 /* Property */ | (prop.flags & 16777216 /* Optional */); + var result = createSymbol(flags, prop.escapedName, readonly ? 8 /* Readonly */ : 0); + result.type = isSetonlyAccessor ? undefinedType : getTypeOfSymbol(prop); + result.declarations = prop.declarations; + result.nameType = getSymbolLinks(prop).nameType; + result.syntheticOrigin = prop; + return result; + } + function getIndexInfoWithReadonly(info, readonly) { + return info && info.isReadonly !== readonly ? createIndexInfo(info.type, readonly, info.declaration) : info; + } + function createLiteralType(flags, value, symbol) { + var type = createType(flags); + type.symbol = symbol; + type.value = value; + return type; + } + function getFreshTypeOfLiteralType(type) { + if (type.flags & 2944 /* Literal */) { + if (!type.freshType) { + var freshType = createLiteralType(type.flags, type.value, type.symbol); + freshType.regularType = type; + freshType.freshType = freshType; + type.freshType = freshType; + } + return type.freshType; + } + return type; + } + function getRegularTypeOfLiteralType(type) { + return type.flags & 2944 /* Literal */ ? type.regularType : + type.flags & 1048576 /* Union */ ? (type.regularType || (type.regularType = getUnionType(ts.sameMap(type.types, getRegularTypeOfLiteralType)))) : + type; + } + function isFreshLiteralType(type) { + return !!(type.flags & 2944 /* Literal */) && type.freshType === type; + } + function getLiteralType(value, enumId, symbol) { + // We store all literal types in a single map with keys of the form '#NNN' and '@SSS', + // where NNN is the text representation of a numeric literal and SSS are the characters + // of a string literal. For literal enum members we use 'EEE#NNN' and 'EEE@SSS', where + // EEE is a unique id for the containing enum type. + var qualifier = typeof value === "number" ? "#" : typeof value === "string" ? "@" : "n"; + var key = (enumId ? enumId : "") + qualifier + (typeof value === "object" ? ts.pseudoBigIntToString(value) : value); + var type = literalTypes.get(key); + if (!type) { + var flags = (typeof value === "number" ? 256 /* NumberLiteral */ : + typeof value === "string" ? 128 /* StringLiteral */ : 2048 /* BigIntLiteral */) | + (enumId ? 1024 /* EnumLiteral */ : 0); + literalTypes.set(key, type = createLiteralType(flags, value, symbol)); + type.regularType = type; + } + return type; + } + function getTypeFromLiteralTypeNode(node) { + var links = getNodeLinks(node); + if (!links.resolvedType) { + links.resolvedType = getRegularTypeOfLiteralType(checkExpression(node.literal)); + } + return links.resolvedType; + } + function createUniqueESSymbolType(symbol) { + var type = createType(8192 /* UniqueESSymbol */); + type.symbol = symbol; + type.escapedName = "__@" + type.symbol.escapedName + "@" + getSymbolId(type.symbol); + return type; + } + function getESSymbolLikeTypeForNode(node) { + if (ts.isValidESSymbolDeclaration(node)) { + var symbol = getSymbolOfNode(node); + var links = getSymbolLinks(symbol); + return links.uniqueESSymbolType || (links.uniqueESSymbolType = createUniqueESSymbolType(symbol)); + } + return esSymbolType; + } + function getThisType(node) { + var container = ts.getThisContainer(node, /*includeArrowFunctions*/ false); + var parent = container && container.parent; + if (parent && (ts.isClassLike(parent) || parent.kind === 246 /* InterfaceDeclaration */)) { + if (!ts.hasModifier(container, 32 /* Static */) && + (!ts.isConstructorDeclaration(container) || ts.isNodeDescendantOf(node, container.body))) { + return getDeclaredTypeOfClassOrInterface(getSymbolOfNode(parent)).thisType; + } + } + // inside x.prototype = { ... } + if (parent && ts.isObjectLiteralExpression(parent) && ts.isBinaryExpression(parent.parent) && ts.getAssignmentDeclarationKind(parent.parent) === 6 /* Prototype */) { + return getDeclaredTypeOfClassOrInterface(getSymbolOfNode(parent.parent.left).parent).thisType; + } + // /** @return {this} */ + // x.prototype.m = function() { ... } + var host = node.flags & 4194304 /* JSDoc */ ? ts.getHostSignatureFromJSDoc(node) : undefined; + if (host && ts.isFunctionExpression(host) && ts.isBinaryExpression(host.parent) && ts.getAssignmentDeclarationKind(host.parent) === 3 /* PrototypeProperty */) { + return getDeclaredTypeOfClassOrInterface(getSymbolOfNode(host.parent.left).parent).thisType; + } + // inside constructor function C() { ... } + if (isJSConstructor(container) && ts.isNodeDescendantOf(node, container.body)) { + return getDeclaredTypeOfClassOrInterface(getSymbolOfNode(container)).thisType; + } + error(node, ts.Diagnostics.A_this_type_is_available_only_in_a_non_static_member_of_a_class_or_interface); + return errorType; + } + function getTypeFromThisTypeNode(node) { + var links = getNodeLinks(node); + if (!links.resolvedType) { + links.resolvedType = getThisType(node); + } + return links.resolvedType; + } + function getTypeFromTypeNode(node) { + return getConditionalFlowTypeOfType(getTypeFromTypeNodeWorker(node), node); + } + function getTypeFromTypeNodeWorker(node) { + switch (node.kind) { + case 125 /* AnyKeyword */: + case 295 /* JSDocAllType */: + case 296 /* JSDocUnknownType */: + return anyType; + case 148 /* UnknownKeyword */: + return unknownType; + case 143 /* StringKeyword */: + return stringType; + case 140 /* NumberKeyword */: + return numberType; + case 151 /* BigIntKeyword */: + return bigintType; + case 128 /* BooleanKeyword */: + return booleanType; + case 144 /* SymbolKeyword */: + return esSymbolType; + case 110 /* VoidKeyword */: + return voidType; + case 146 /* UndefinedKeyword */: + return undefinedType; + case 100 /* NullKeyword */: + return nullType; + case 137 /* NeverKeyword */: + return neverType; + case 141 /* ObjectKeyword */: + return node.flags & 131072 /* JavaScriptFile */ && !noImplicitAny ? anyType : nonPrimitiveType; + case 183 /* ThisType */: + case 104 /* ThisKeyword */: + return getTypeFromThisTypeNode(node); + case 187 /* LiteralType */: + return getTypeFromLiteralTypeNode(node); + case 169 /* TypeReference */: + return getTypeFromTypeReference(node); + case 168 /* TypePredicate */: + return node.assertsModifier ? voidType : booleanType; + case 216 /* ExpressionWithTypeArguments */: + return getTypeFromTypeReference(node); + case 172 /* TypeQuery */: + return getTypeFromTypeQueryNode(node); + case 174 /* ArrayType */: + case 175 /* TupleType */: + return getTypeFromArrayOrTupleTypeNode(node); + case 176 /* OptionalType */: + return getTypeFromOptionalTypeNode(node); + case 178 /* UnionType */: + return getTypeFromUnionTypeNode(node); + case 179 /* IntersectionType */: + return getTypeFromIntersectionTypeNode(node); + case 297 /* JSDocNullableType */: + return getTypeFromJSDocNullableTypeNode(node); + case 299 /* JSDocOptionalType */: + return addOptionality(getTypeFromTypeNode(node.type)); + case 182 /* ParenthesizedType */: + case 298 /* JSDocNonNullableType */: + case 294 /* JSDocTypeExpression */: + return getTypeFromTypeNode(node.type); + case 177 /* RestType */: + return getElementTypeOfArrayType(getTypeFromTypeNode(node.type)) || errorType; + case 301 /* JSDocVariadicType */: + return getTypeFromJSDocVariadicType(node); + case 170 /* FunctionType */: + case 171 /* ConstructorType */: + case 173 /* TypeLiteral */: + case 304 /* JSDocTypeLiteral */: + case 300 /* JSDocFunctionType */: + case 305 /* JSDocSignature */: + return getTypeFromTypeLiteralOrFunctionOrConstructorTypeNode(node); + case 184 /* TypeOperator */: + return getTypeFromTypeOperatorNode(node); + case 185 /* IndexedAccessType */: + return getTypeFromIndexedAccessTypeNode(node); + case 186 /* MappedType */: + return getTypeFromMappedTypeNode(node); + case 180 /* ConditionalType */: + return getTypeFromConditionalTypeNode(node); + case 181 /* InferType */: + return getTypeFromInferTypeNode(node); + case 188 /* ImportType */: + return getTypeFromImportTypeNode(node); + // This function assumes that an identifier or qualified name is a type expression + // Callers should first ensure this by calling isTypeNode + case 75 /* Identifier */: + case 153 /* QualifiedName */: + var symbol = getSymbolAtLocation(node); + return symbol ? getDeclaredTypeOfSymbol(symbol) : errorType; + default: + return errorType; + } + } + function instantiateList(items, mapper, instantiator) { + if (items && items.length) { + for (var i = 0; i < items.length; i++) { + var item = items[i]; + var mapped = instantiator(item, mapper); + if (item !== mapped) { + var result = i === 0 ? [] : items.slice(0, i); + result.push(mapped); + for (i++; i < items.length; i++) { + result.push(instantiator(items[i], mapper)); + } + return result; + } + } + } + return items; + } + function instantiateTypes(types, mapper) { + return instantiateList(types, mapper, instantiateType); + } + function instantiateSignatures(signatures, mapper) { + return instantiateList(signatures, mapper, instantiateSignature); + } + function createTypeMapper(sources, targets) { + return sources.length === 1 ? makeUnaryTypeMapper(sources[0], targets ? targets[0] : anyType) : makeArrayTypeMapper(sources, targets); + } + function getMappedType(type, mapper) { + switch (mapper.kind) { + case 0 /* Simple */: + return type === mapper.source ? mapper.target : type; + case 1 /* Array */: + var sources = mapper.sources; + var targets = mapper.targets; + for (var i = 0; i < sources.length; i++) { + if (type === sources[i]) { + return targets ? targets[i] : anyType; + } + } + return type; + case 2 /* Function */: + return mapper.func(type); + case 3 /* Composite */: + case 4 /* Merged */: + var t1 = getMappedType(type, mapper.mapper1); + return t1 !== type && mapper.kind === 3 /* Composite */ ? instantiateType(t1, mapper.mapper2) : getMappedType(t1, mapper.mapper2); + } + } + function makeUnaryTypeMapper(source, target) { + return { kind: 0 /* Simple */, source: source, target: target }; + } + function makeArrayTypeMapper(sources, targets) { + return { kind: 1 /* Array */, sources: sources, targets: targets }; + } + function makeFunctionTypeMapper(func) { + return { kind: 2 /* Function */, func: func }; + } + function makeCompositeTypeMapper(kind, mapper1, mapper2) { + return { kind: kind, mapper1: mapper1, mapper2: mapper2 }; + } + function createTypeEraser(sources) { + return createTypeMapper(sources, /*targets*/ undefined); + } + /** + * Maps forward-references to later types parameters to the empty object type. + * This is used during inference when instantiating type parameter defaults. + */ + function createBackreferenceMapper(context, index) { + return makeFunctionTypeMapper(function (t) { return ts.findIndex(context.inferences, function (info) { return info.typeParameter === t; }) >= index ? unknownType : t; }); + } + function combineTypeMappers(mapper1, mapper2) { + return mapper1 ? makeCompositeTypeMapper(3 /* Composite */, mapper1, mapper2) : mapper2; + } + function mergeTypeMappers(mapper1, mapper2) { + return mapper1 ? makeCompositeTypeMapper(4 /* Merged */, mapper1, mapper2) : mapper2; + } + function prependTypeMapping(source, target, mapper) { + return !mapper ? makeUnaryTypeMapper(source, target) : makeCompositeTypeMapper(4 /* Merged */, makeUnaryTypeMapper(source, target), mapper); + } + function appendTypeMapping(mapper, source, target) { + return !mapper ? makeUnaryTypeMapper(source, target) : makeCompositeTypeMapper(4 /* Merged */, mapper, makeUnaryTypeMapper(source, target)); + } + function getRestrictiveTypeParameter(tp) { + return tp.constraint === unknownType ? tp : tp.restrictiveInstantiation || (tp.restrictiveInstantiation = createTypeParameter(tp.symbol), + tp.restrictiveInstantiation.constraint = unknownType, + tp.restrictiveInstantiation); + } + function cloneTypeParameter(typeParameter) { + var result = createTypeParameter(typeParameter.symbol); + result.target = typeParameter; + return result; + } + function instantiateTypePredicate(predicate, mapper) { + return createTypePredicate(predicate.kind, predicate.parameterName, predicate.parameterIndex, instantiateType(predicate.type, mapper)); + } + function instantiateSignature(signature, mapper, eraseTypeParameters) { + var freshTypeParameters; + if (signature.typeParameters && !eraseTypeParameters) { + // First create a fresh set of type parameters, then include a mapping from the old to the + // new type parameters in the mapper function. Finally store this mapper in the new type + // parameters such that we can use it when instantiating constraints. + freshTypeParameters = ts.map(signature.typeParameters, cloneTypeParameter); + mapper = combineTypeMappers(createTypeMapper(signature.typeParameters, freshTypeParameters), mapper); + for (var _i = 0, freshTypeParameters_1 = freshTypeParameters; _i < freshTypeParameters_1.length; _i++) { + var tp = freshTypeParameters_1[_i]; + tp.mapper = mapper; + } + } + // Don't compute resolvedReturnType and resolvedTypePredicate now, + // because using `mapper` now could trigger inferences to become fixed. (See `createInferenceContext`.) + // See GH#17600. + var result = createSignature(signature.declaration, freshTypeParameters, signature.thisParameter && instantiateSymbol(signature.thisParameter, mapper), instantiateList(signature.parameters, mapper, instantiateSymbol), + /*resolvedReturnType*/ undefined, + /*resolvedTypePredicate*/ undefined, signature.minArgumentCount, signature.flags & 3 /* PropagatingFlags */); + result.target = signature; + result.mapper = mapper; + return result; + } + function instantiateSymbol(symbol, mapper) { + var links = getSymbolLinks(symbol); + if (links.type && !couldContainTypeVariables(links.type)) { + // If the type of the symbol is already resolved, and if that type could not possibly + // be affected by instantiation, simply return the symbol itself. + return symbol; + } + if (ts.getCheckFlags(symbol) & 1 /* Instantiated */) { + // If symbol being instantiated is itself a instantiation, fetch the original target and combine the + // type mappers. This ensures that original type identities are properly preserved and that aliases + // always reference a non-aliases. + symbol = links.target; + mapper = combineTypeMappers(links.mapper, mapper); + } + // Keep the flags from the symbol we're instantiating. Mark that is instantiated, and + // also transient so that we can just store data on it directly. + var result = createSymbol(symbol.flags, symbol.escapedName, 1 /* Instantiated */ | ts.getCheckFlags(symbol) & (8 /* Readonly */ | 4096 /* Late */ | 16384 /* OptionalParameter */ | 32768 /* RestParameter */)); + result.declarations = symbol.declarations; + result.parent = symbol.parent; + result.target = symbol; + result.mapper = mapper; + if (symbol.valueDeclaration) { + result.valueDeclaration = symbol.valueDeclaration; + } + if (links.nameType) { + result.nameType = links.nameType; + } + return result; + } + function getObjectTypeInstantiation(type, mapper) { + var target = type.objectFlags & 64 /* Instantiated */ ? type.target : type; + var node = type.objectFlags & 4 /* Reference */ ? type.node : type.symbol.declarations[0]; + var links = getNodeLinks(node); + var typeParameters = links.outerTypeParameters; + if (!typeParameters) { + // The first time an anonymous type is instantiated we compute and store a list of the type + // parameters that are in scope (and therefore potentially referenced). For type literals that + // aren't the right hand side of a generic type alias declaration we optimize by reducing the + // set of type parameters to those that are possibly referenced in the literal. + var declaration_1 = node; + if (ts.isInJSFile(declaration_1)) { + var paramTag = ts.findAncestor(declaration_1, ts.isJSDocParameterTag); + if (paramTag) { + var paramSymbol = ts.getParameterSymbolFromJSDoc(paramTag); + if (paramSymbol) { + declaration_1 = paramSymbol.valueDeclaration; + } + } + } + var outerTypeParameters = getOuterTypeParameters(declaration_1, /*includeThisTypes*/ true); + if (isJSConstructor(declaration_1)) { + var templateTagParameters = getTypeParametersFromDeclaration(declaration_1); + outerTypeParameters = ts.addRange(outerTypeParameters, templateTagParameters); + } + typeParameters = outerTypeParameters || ts.emptyArray; + typeParameters = (target.objectFlags & 4 /* Reference */ || target.symbol.flags & 2048 /* TypeLiteral */) && !target.aliasTypeArguments ? + ts.filter(typeParameters, function (tp) { return isTypeParameterPossiblyReferenced(tp, declaration_1); }) : + typeParameters; + links.outerTypeParameters = typeParameters; + if (typeParameters.length) { + links.instantiations = ts.createMap(); + links.instantiations.set(getTypeListId(typeParameters), target); + } + } + if (typeParameters.length) { + // We are instantiating an anonymous type that has one or more type parameters in scope. Apply the + // mapper to the type parameters to produce the effective list of type arguments, and compute the + // instantiation cache key from the type IDs of the type arguments. + var combinedMapper_1 = combineTypeMappers(type.mapper, mapper); + var typeArguments = ts.map(typeParameters, function (t) { return getMappedType(t, combinedMapper_1); }); + var id = getTypeListId(typeArguments); + var result = links.instantiations.get(id); + if (!result) { + var newMapper = createTypeMapper(typeParameters, typeArguments); + result = target.objectFlags & 4 /* Reference */ ? createDeferredTypeReference(type.target, type.node, newMapper) : + target.objectFlags & 32 /* Mapped */ ? instantiateMappedType(target, newMapper) : + instantiateAnonymousType(target, newMapper); + links.instantiations.set(id, result); + } + return result; + } + return type; + } + function maybeTypeParameterReference(node) { + return !(node.kind === 153 /* QualifiedName */ || + node.parent.kind === 169 /* TypeReference */ && node.parent.typeArguments && node === node.parent.typeName || + node.parent.kind === 188 /* ImportType */ && node.parent.typeArguments && node === node.parent.qualifier); + } + function isTypeParameterPossiblyReferenced(tp, node) { + // If the type parameter doesn't have exactly one declaration, if there are invening statement blocks + // between the node and the type parameter declaration, if the node contains actual references to the + // type parameter, or if the node contains type queries, we consider the type parameter possibly referenced. + if (tp.symbol && tp.symbol.declarations && tp.symbol.declarations.length === 1) { + var container = tp.symbol.declarations[0].parent; + for (var n = node; n !== container; n = n.parent) { + if (!n || n.kind === 223 /* Block */ || n.kind === 180 /* ConditionalType */ && ts.forEachChild(n.extendsType, containsReference)) { + return true; + } + } + return !!ts.forEachChild(node, containsReference); + } + return true; + function containsReference(node) { + switch (node.kind) { + case 183 /* ThisType */: + return !!tp.isThisType; + case 75 /* Identifier */: + return !tp.isThisType && ts.isPartOfTypeNode(node) && maybeTypeParameterReference(node) && + getTypeFromTypeNodeWorker(node) === tp; // use worker because we're looking for === equality + case 172 /* TypeQuery */: + return true; + } + return !!ts.forEachChild(node, containsReference); + } + } + function getHomomorphicTypeVariable(type) { + var constraintType = getConstraintTypeFromMappedType(type); + if (constraintType.flags & 4194304 /* Index */) { + var typeVariable = getActualTypeVariable(constraintType.type); + if (typeVariable.flags & 262144 /* TypeParameter */) { + return typeVariable; + } + } + return undefined; + } + function instantiateMappedType(type, mapper) { + // For a homomorphic mapped type { [P in keyof T]: X }, where T is some type variable, the mapping + // operation depends on T as follows: + // * If T is a primitive type no mapping is performed and the result is simply T. + // * If T is a union type we distribute the mapped type over the union. + // * If T is an array we map to an array where the element type has been transformed. + // * If T is a tuple we map to a tuple where the element types have been transformed. + // * Otherwise we map to an object type where the type of each property has been transformed. + // For example, when T is instantiated to a union type A | B, we produce { [P in keyof A]: X } | + // { [P in keyof B]: X }, and when when T is instantiated to a union type A | undefined, we produce + // { [P in keyof A]: X } | undefined. + var typeVariable = getHomomorphicTypeVariable(type); + if (typeVariable) { + var mappedTypeVariable = instantiateType(typeVariable, mapper); + if (typeVariable !== mappedTypeVariable) { + return mapType(getReducedType(mappedTypeVariable), function (t) { + if (t.flags & (3 /* AnyOrUnknown */ | 58982400 /* InstantiableNonPrimitive */ | 524288 /* Object */ | 2097152 /* Intersection */) && t !== wildcardType && t !== errorType) { + var replacementMapper = prependTypeMapping(typeVariable, t, mapper); + return isArrayType(t) ? instantiateMappedArrayType(t, type, replacementMapper) : + isTupleType(t) ? instantiateMappedTupleType(t, type, replacementMapper) : + instantiateAnonymousType(type, replacementMapper); + } + return t; + }); + } + } + return instantiateAnonymousType(type, mapper); + } + function getModifiedReadonlyState(state, modifiers) { + return modifiers & 1 /* IncludeReadonly */ ? true : modifiers & 2 /* ExcludeReadonly */ ? false : state; + } + function instantiateMappedArrayType(arrayType, mappedType, mapper) { + var elementType = instantiateMappedTypeTemplate(mappedType, numberType, /*isOptional*/ true, mapper); + return elementType === errorType ? errorType : + createArrayType(elementType, getModifiedReadonlyState(isReadonlyArrayType(arrayType), getMappedTypeModifiers(mappedType))); + } + function instantiateMappedTupleType(tupleType, mappedType, mapper) { + var minLength = tupleType.target.minLength; + var elementTypes = ts.map(getTypeArguments(tupleType), function (_, i) { + return instantiateMappedTypeTemplate(mappedType, getLiteralType("" + i), i >= minLength, mapper); + }); + var modifiers = getMappedTypeModifiers(mappedType); + var newMinLength = modifiers & 4 /* IncludeOptional */ ? 0 : + modifiers & 8 /* ExcludeOptional */ ? getTypeReferenceArity(tupleType) - (tupleType.target.hasRestElement ? 1 : 0) : + minLength; + var newReadonly = getModifiedReadonlyState(tupleType.target.readonly, modifiers); + return ts.contains(elementTypes, errorType) ? errorType : + createTupleType(elementTypes, newMinLength, tupleType.target.hasRestElement, newReadonly, tupleType.target.associatedNames); + } + function instantiateMappedTypeTemplate(type, key, isOptional, mapper) { + var templateMapper = appendTypeMapping(mapper, getTypeParameterFromMappedType(type), key); + var propType = instantiateType(getTemplateTypeFromMappedType(type.target || type), templateMapper); + var modifiers = getMappedTypeModifiers(type); + return strictNullChecks && modifiers & 4 /* IncludeOptional */ && !maybeTypeOfKind(propType, 32768 /* Undefined */ | 16384 /* Void */) ? getOptionalType(propType) : + strictNullChecks && modifiers & 8 /* ExcludeOptional */ && isOptional ? getTypeWithFacts(propType, 524288 /* NEUndefined */) : + propType; + } + function instantiateAnonymousType(type, mapper) { + var result = createObjectType(type.objectFlags | 64 /* Instantiated */, type.symbol); + if (type.objectFlags & 32 /* Mapped */) { + result.declaration = type.declaration; + // C.f. instantiateSignature + var origTypeParameter = getTypeParameterFromMappedType(type); + var freshTypeParameter = cloneTypeParameter(origTypeParameter); + result.typeParameter = freshTypeParameter; + mapper = combineTypeMappers(makeUnaryTypeMapper(origTypeParameter, freshTypeParameter), mapper); + freshTypeParameter.mapper = mapper; + } + result.target = type; + result.mapper = mapper; + result.aliasSymbol = type.aliasSymbol; + result.aliasTypeArguments = instantiateTypes(type.aliasTypeArguments, mapper); + return result; + } + function getConditionalTypeInstantiation(type, mapper) { + var root = type.root; + if (root.outerTypeParameters) { + // We are instantiating a conditional type that has one or more type parameters in scope. Apply the + // mapper to the type parameters to produce the effective list of type arguments, and compute the + // instantiation cache key from the type IDs of the type arguments. + var typeArguments = ts.map(root.outerTypeParameters, function (t) { return getMappedType(t, mapper); }); + var id = getTypeListId(typeArguments); + var result = root.instantiations.get(id); + if (!result) { + var newMapper = createTypeMapper(root.outerTypeParameters, typeArguments); + result = instantiateConditionalType(root, newMapper); + root.instantiations.set(id, result); + } + return result; + } + return type; + } + function instantiateConditionalType(root, mapper) { + // Check if we have a conditional type where the check type is a naked type parameter. If so, + // the conditional type is distributive over union types and when T is instantiated to a union + // type A | B, we produce (A extends U ? X : Y) | (B extends U ? X : Y). + if (root.isDistributive) { + var checkType_1 = root.checkType; + var instantiatedType = getMappedType(checkType_1, mapper); + if (checkType_1 !== instantiatedType && instantiatedType.flags & (1048576 /* Union */ | 131072 /* Never */)) { + return mapType(instantiatedType, function (t) { return getConditionalType(root, prependTypeMapping(checkType_1, t, mapper)); }); + } + } + return getConditionalType(root, mapper); + } + function instantiateType(type, mapper) { + if (!type || !mapper) { + return type; + } + if (instantiationDepth === 50 || instantiationCount >= 5000000) { + // We have reached 50 recursive type instantiations and there is a very high likelyhood we're dealing + // with a combination of infinite generic types that perpetually generate new type identities. We stop + // the recursion here by yielding the error type. + error(currentNode, ts.Diagnostics.Type_instantiation_is_excessively_deep_and_possibly_infinite); + return errorType; + } + totalInstantiationCount++; + instantiationCount++; + instantiationDepth++; + var result = instantiateTypeWorker(type, mapper); + instantiationDepth--; + return result; + } + /** + * This can be used to avoid the penalty on instantiation depth for types which result from immediate + * simplification. It essentially removes the depth increase done in `instantiateType`. + */ + function instantiateTypeWithoutDepthIncrease(type, mapper) { + instantiationDepth--; + var result = instantiateType(type, mapper); + instantiationDepth++; + return result; + } + function instantiateTypeWorker(type, mapper) { + var flags = type.flags; + if (flags & 262144 /* TypeParameter */) { + return getMappedType(type, mapper); + } + if (flags & 524288 /* Object */) { + var objectFlags = type.objectFlags; + if (objectFlags & 16 /* Anonymous */) { + // If the anonymous type originates in a declaration of a function, method, class, or + // interface, in an object type literal, or in an object literal expression, we may need + // to instantiate the type because it might reference a type parameter. + return couldContainTypeVariables(type) ? + getObjectTypeInstantiation(type, mapper) : type; + } + if (objectFlags & 32 /* Mapped */) { + return getObjectTypeInstantiation(type, mapper); + } + if (objectFlags & 4 /* Reference */) { + if (type.node) { + return getObjectTypeInstantiation(type, mapper); + } + var resolvedTypeArguments = type.resolvedTypeArguments; + var newTypeArguments = instantiateTypes(resolvedTypeArguments, mapper); + return newTypeArguments !== resolvedTypeArguments ? createTypeReference(type.target, newTypeArguments) : type; + } + return type; + } + if ((flags & 2097152 /* Intersection */) || (flags & 1048576 /* Union */ && !(flags & 131068 /* Primitive */))) { + if (!couldContainTypeVariables(type)) { + return type; + } + var types = type.types; + var newTypes = instantiateTypes(types, mapper); + return newTypes === types + ? type + : (flags & 2097152 /* Intersection */) + ? getIntersectionType(newTypes, type.aliasSymbol, instantiateTypes(type.aliasTypeArguments, mapper)) + : getUnionType(newTypes, 1 /* Literal */, type.aliasSymbol, instantiateTypes(type.aliasTypeArguments, mapper)); + } + if (flags & 4194304 /* Index */) { + return getIndexType(instantiateType(type.type, mapper)); + } + if (flags & 8388608 /* IndexedAccess */) { + return getIndexedAccessType(instantiateType(type.objectType, mapper), instantiateType(type.indexType, mapper), /*accessNode*/ undefined, type.aliasSymbol, instantiateTypes(type.aliasTypeArguments, mapper)); + } + if (flags & 16777216 /* Conditional */) { + return getConditionalTypeInstantiation(type, combineTypeMappers(type.mapper, mapper)); + } + if (flags & 33554432 /* Substitution */) { + var maybeVariable = instantiateType(type.baseType, mapper); + if (maybeVariable.flags & 8650752 /* TypeVariable */) { + return getSubstitutionType(maybeVariable, instantiateType(type.substitute, mapper)); + } + else { + var sub = instantiateType(type.substitute, mapper); + if (sub.flags & 3 /* AnyOrUnknown */ || isTypeAssignableTo(getRestrictiveInstantiation(maybeVariable), getRestrictiveInstantiation(sub))) { + return maybeVariable; + } + return sub; + } + } + return type; + } + function getPermissiveInstantiation(type) { + return type.flags & (131068 /* Primitive */ | 3 /* AnyOrUnknown */ | 131072 /* Never */) ? type : + type.permissiveInstantiation || (type.permissiveInstantiation = instantiateType(type, permissiveMapper)); + } + function getRestrictiveInstantiation(type) { + if (type.flags & (131068 /* Primitive */ | 3 /* AnyOrUnknown */ | 131072 /* Never */)) { + return type; + } + if (type.restrictiveInstantiation) { + return type.restrictiveInstantiation; + } + type.restrictiveInstantiation = instantiateType(type, restrictiveMapper); + // We set the following so we don't attempt to set the restrictive instance of a restrictive instance + // which is redundant - we'll produce new type identities, but all type params have already been mapped. + // This also gives us a way to detect restrictive instances upon comparisons and _disable_ the "distributeive constraint" + // assignability check for them, which is distinctly unsafe, as once you have a restrctive instance, all the type parameters + // are constrained to `unknown` and produce tons of false positives/negatives! + type.restrictiveInstantiation.restrictiveInstantiation = type.restrictiveInstantiation; + return type.restrictiveInstantiation; + } + function instantiateIndexInfo(info, mapper) { + return info && createIndexInfo(instantiateType(info.type, mapper), info.isReadonly, info.declaration); + } + // Returns true if the given expression contains (at any level of nesting) a function or arrow expression + // that is subject to contextual typing. + function isContextSensitive(node) { + ts.Debug.assert(node.kind !== 161 /* MethodDeclaration */ || ts.isObjectLiteralMethod(node)); + switch (node.kind) { + case 201 /* FunctionExpression */: + case 202 /* ArrowFunction */: + case 161 /* MethodDeclaration */: + case 244 /* FunctionDeclaration */: // Function declarations can have context when annotated with a jsdoc @type + return isContextSensitiveFunctionLikeDeclaration(node); + case 193 /* ObjectLiteralExpression */: + return ts.some(node.properties, isContextSensitive); + case 192 /* ArrayLiteralExpression */: + return ts.some(node.elements, isContextSensitive); + case 210 /* ConditionalExpression */: + return isContextSensitive(node.whenTrue) || + isContextSensitive(node.whenFalse); + case 209 /* BinaryExpression */: + return (node.operatorToken.kind === 56 /* BarBarToken */ || node.operatorToken.kind === 60 /* QuestionQuestionToken */) && + (isContextSensitive(node.left) || isContextSensitive(node.right)); + case 281 /* PropertyAssignment */: + return isContextSensitive(node.initializer); + case 200 /* ParenthesizedExpression */: + return isContextSensitive(node.expression); + case 274 /* JsxAttributes */: + return ts.some(node.properties, isContextSensitive) || ts.isJsxOpeningElement(node.parent) && ts.some(node.parent.parent.children, isContextSensitive); + case 273 /* JsxAttribute */: { + // If there is no initializer, JSX attribute has a boolean value of true which is not context sensitive. + var initializer = node.initializer; + return !!initializer && isContextSensitive(initializer); + } + case 276 /* JsxExpression */: { + // It is possible to that node.expression is undefined (e.g
) + var expression = node.expression; + return !!expression && isContextSensitive(expression); + } + } + return false; + } + function isContextSensitiveFunctionLikeDeclaration(node) { + return (!ts.isFunctionDeclaration(node) || ts.isInJSFile(node) && !!getTypeForDeclarationFromJSDocComment(node)) && + (hasContextSensitiveParameters(node) || hasContextSensitiveReturnExpression(node)); + } + function hasContextSensitiveParameters(node) { + // Functions with type parameters are not context sensitive. + if (!node.typeParameters) { + // Functions with any parameters that lack type annotations are context sensitive. + if (ts.some(node.parameters, function (p) { return !ts.getEffectiveTypeAnnotationNode(p); })) { + return true; + } + if (node.kind !== 202 /* ArrowFunction */) { + // If the first parameter is not an explicit 'this' parameter, then the function has + // an implicit 'this' parameter which is subject to contextual typing. + var parameter = ts.firstOrUndefined(node.parameters); + if (!(parameter && ts.parameterIsThisKeyword(parameter))) { + return true; + } + } + } + return false; + } + function hasContextSensitiveReturnExpression(node) { + // TODO(anhans): A block should be context-sensitive if it has a context-sensitive return value. + return !node.typeParameters && !ts.getEffectiveReturnTypeNode(node) && !!node.body && node.body.kind !== 223 /* Block */ && isContextSensitive(node.body); + } + function isContextSensitiveFunctionOrObjectLiteralMethod(func) { + return (ts.isInJSFile(func) && ts.isFunctionDeclaration(func) || isFunctionExpressionOrArrowFunction(func) || ts.isObjectLiteralMethod(func)) && + isContextSensitiveFunctionLikeDeclaration(func); + } + function getTypeWithoutSignatures(type) { + if (type.flags & 524288 /* Object */) { + var resolved = resolveStructuredTypeMembers(type); + if (resolved.constructSignatures.length || resolved.callSignatures.length) { + var result = createObjectType(16 /* Anonymous */, type.symbol); + result.members = resolved.members; + result.properties = resolved.properties; + result.callSignatures = ts.emptyArray; + result.constructSignatures = ts.emptyArray; + return result; + } + } + else if (type.flags & 2097152 /* Intersection */) { + return getIntersectionType(ts.map(type.types, getTypeWithoutSignatures)); + } + return type; + } + // TYPE CHECKING + function isTypeIdenticalTo(source, target) { + return isTypeRelatedTo(source, target, identityRelation); + } + function compareTypesIdentical(source, target) { + return isTypeRelatedTo(source, target, identityRelation) ? -1 /* True */ : 0 /* False */; + } + function compareTypesAssignable(source, target) { + return isTypeRelatedTo(source, target, assignableRelation) ? -1 /* True */ : 0 /* False */; + } + function compareTypesSubtypeOf(source, target) { + return isTypeRelatedTo(source, target, subtypeRelation) ? -1 /* True */ : 0 /* False */; + } + function isTypeSubtypeOf(source, target) { + return isTypeRelatedTo(source, target, subtypeRelation); + } + function isTypeAssignableTo(source, target) { + return isTypeRelatedTo(source, target, assignableRelation); + } + // An object type S is considered to be derived from an object type T if + // S is a union type and every constituent of S is derived from T, + // T is a union type and S is derived from at least one constituent of T, or + // S is a type variable with a base constraint that is derived from T, + // T is one of the global types Object and Function and S is a subtype of T, or + // T occurs directly or indirectly in an 'extends' clause of S. + // Note that this check ignores type parameters and only considers the + // inheritance hierarchy. + function isTypeDerivedFrom(source, target) { + return source.flags & 1048576 /* Union */ ? ts.every(source.types, function (t) { return isTypeDerivedFrom(t, target); }) : + target.flags & 1048576 /* Union */ ? ts.some(target.types, function (t) { return isTypeDerivedFrom(source, t); }) : + source.flags & 58982400 /* InstantiableNonPrimitive */ ? isTypeDerivedFrom(getBaseConstraintOfType(source) || unknownType, target) : + target === globalObjectType ? !!(source.flags & (524288 /* Object */ | 67108864 /* NonPrimitive */)) : + target === globalFunctionType ? !!(source.flags & 524288 /* Object */) && isFunctionObjectType(source) : + hasBaseType(source, getTargetType(target)); + } + /** + * This is *not* a bi-directional relationship. + * If one needs to check both directions for comparability, use a second call to this function or 'checkTypeComparableTo'. + * + * A type S is comparable to a type T if some (but not necessarily all) of the possible values of S are also possible values of T. + * It is used to check following cases: + * - the types of the left and right sides of equality/inequality operators (`===`, `!==`, `==`, `!=`). + * - the types of `case` clause expressions and their respective `switch` expressions. + * - the type of an expression in a type assertion with the type being asserted. + */ + function isTypeComparableTo(source, target) { + return isTypeRelatedTo(source, target, comparableRelation); + } + function areTypesComparable(type1, type2) { + return isTypeComparableTo(type1, type2) || isTypeComparableTo(type2, type1); + } + function checkTypeAssignableTo(source, target, errorNode, headMessage, containingMessageChain, errorOutputObject) { + return checkTypeRelatedTo(source, target, assignableRelation, errorNode, headMessage, containingMessageChain, errorOutputObject); + } + /** + * Like `checkTypeAssignableTo`, but if it would issue an error, instead performs structural comparisons of the types using the given expression node to + * attempt to issue more specific errors on, for example, specific object literal properties or tuple members. + */ + function checkTypeAssignableToAndOptionallyElaborate(source, target, errorNode, expr, headMessage, containingMessageChain) { + return checkTypeRelatedToAndOptionallyElaborate(source, target, assignableRelation, errorNode, expr, headMessage, containingMessageChain, /*errorOutputContainer*/ undefined); + } + function checkTypeRelatedToAndOptionallyElaborate(source, target, relation, errorNode, expr, headMessage, containingMessageChain, errorOutputContainer) { + if (isTypeRelatedTo(source, target, relation)) + return true; + if (!errorNode || !elaborateError(expr, source, target, relation, headMessage, containingMessageChain, errorOutputContainer)) { + return checkTypeRelatedTo(source, target, relation, errorNode, headMessage, containingMessageChain, errorOutputContainer); + } + return false; + } + function isOrHasGenericConditional(type) { + return !!(type.flags & 16777216 /* Conditional */ || (type.flags & 2097152 /* Intersection */ && ts.some(type.types, isOrHasGenericConditional))); + } + function elaborateError(node, source, target, relation, headMessage, containingMessageChain, errorOutputContainer) { + if (!node || isOrHasGenericConditional(target)) + return false; + if (!checkTypeRelatedTo(source, target, relation, /*errorNode*/ undefined) + && elaborateDidYouMeanToCallOrConstruct(node, source, target, relation, headMessage, containingMessageChain, errorOutputContainer)) { + return true; + } + switch (node.kind) { + case 276 /* JsxExpression */: + case 200 /* ParenthesizedExpression */: + return elaborateError(node.expression, source, target, relation, headMessage, containingMessageChain, errorOutputContainer); + case 209 /* BinaryExpression */: + switch (node.operatorToken.kind) { + case 62 /* EqualsToken */: + case 27 /* CommaToken */: + return elaborateError(node.right, source, target, relation, headMessage, containingMessageChain, errorOutputContainer); + } + break; + case 193 /* ObjectLiteralExpression */: + return elaborateObjectLiteral(node, source, target, relation, containingMessageChain, errorOutputContainer); + case 192 /* ArrayLiteralExpression */: + return elaborateArrayLiteral(node, source, target, relation, containingMessageChain, errorOutputContainer); + case 274 /* JsxAttributes */: + return elaborateJsxComponents(node, source, target, relation, containingMessageChain, errorOutputContainer); + case 202 /* ArrowFunction */: + return elaborateArrowFunction(node, source, target, relation, containingMessageChain, errorOutputContainer); + } + return false; + } + function elaborateDidYouMeanToCallOrConstruct(node, source, target, relation, headMessage, containingMessageChain, errorOutputContainer) { + var callSignatures = getSignaturesOfType(source, 0 /* Call */); + var constructSignatures = getSignaturesOfType(source, 1 /* Construct */); + for (var _i = 0, _a = [constructSignatures, callSignatures]; _i < _a.length; _i++) { + var signatures = _a[_i]; + if (ts.some(signatures, function (s) { + var returnType = getReturnTypeOfSignature(s); + return !(returnType.flags & (1 /* Any */ | 131072 /* Never */)) && checkTypeRelatedTo(returnType, target, relation, /*errorNode*/ undefined); + })) { + var resultObj = errorOutputContainer || {}; + checkTypeAssignableTo(source, target, node, headMessage, containingMessageChain, resultObj); + var diagnostic = resultObj.errors[resultObj.errors.length - 1]; + ts.addRelatedInfo(diagnostic, ts.createDiagnosticForNode(node, signatures === constructSignatures ? ts.Diagnostics.Did_you_mean_to_use_new_with_this_expression : ts.Diagnostics.Did_you_mean_to_call_this_expression)); + return true; + } + } + return false; + } + function elaborateArrowFunction(node, source, target, relation, containingMessageChain, errorOutputContainer) { + // Don't elaborate blocks + if (ts.isBlock(node.body)) { + return false; + } + // Or functions with annotated parameter types + if (ts.some(node.parameters, ts.hasType)) { + return false; + } + var sourceSig = getSingleCallSignature(source); + if (!sourceSig) { + return false; + } + var targetSignatures = getSignaturesOfType(target, 0 /* Call */); + if (!ts.length(targetSignatures)) { + return false; + } + var returnExpression = node.body; + var sourceReturn = getReturnTypeOfSignature(sourceSig); + var targetReturn = getUnionType(ts.map(targetSignatures, getReturnTypeOfSignature)); + if (!checkTypeRelatedTo(sourceReturn, targetReturn, relation, /*errorNode*/ undefined)) { + var elaborated = returnExpression && elaborateError(returnExpression, sourceReturn, targetReturn, relation, /*headMessage*/ undefined, containingMessageChain, errorOutputContainer); + if (elaborated) { + return elaborated; + } + var resultObj = errorOutputContainer || {}; + checkTypeRelatedTo(sourceReturn, targetReturn, relation, returnExpression, /*message*/ undefined, containingMessageChain, resultObj); + if (resultObj.errors) { + if (target.symbol && ts.length(target.symbol.declarations)) { + ts.addRelatedInfo(resultObj.errors[resultObj.errors.length - 1], ts.createDiagnosticForNode(target.symbol.declarations[0], ts.Diagnostics.The_expected_type_comes_from_the_return_type_of_this_signature)); + } + if ((ts.getFunctionFlags(node) & 2 /* Async */) === 0 + // exclude cases where source itself is promisy - this way we don't make a suggestion when relating + // an IPromise and a Promise that are slightly different + && !getTypeOfPropertyOfType(sourceReturn, "then") + && checkTypeRelatedTo(createPromiseType(sourceReturn), targetReturn, relation, /*errorNode*/ undefined)) { + ts.addRelatedInfo(resultObj.errors[resultObj.errors.length - 1], ts.createDiagnosticForNode(node, ts.Diagnostics.Did_you_mean_to_mark_this_function_as_async)); + } + return true; + } + } + return false; + } + function getBestMatchIndexedAccessTypeOrUndefined(source, target, nameType) { + var idx = getIndexedAccessTypeOrUndefined(target, nameType); + if (idx) { + return idx; + } + if (target.flags & 1048576 /* Union */) { + var best = getBestMatchingType(source, target); + if (best) { + return getIndexedAccessTypeOrUndefined(best, nameType); + } + } + } + function checkExpressionForMutableLocationWithContextualType(next, sourcePropType) { + next.contextualType = sourcePropType; + try { + return checkExpressionForMutableLocation(next, 1 /* Contextual */, sourcePropType); + } + finally { + next.contextualType = undefined; + } + } + /** + * For every element returned from the iterator, checks that element to issue an error on a property of that element's type + * If that element would issue an error, we first attempt to dive into that element's inner expression and issue a more specific error by recuring into `elaborateError` + * Otherwise, we issue an error on _every_ element which fail the assignability check + */ + function elaborateElementwise(iterator, source, target, relation, containingMessageChain, errorOutputContainer) { + // Assignability failure - check each prop individually, and if that fails, fall back on the bad error span + var reportedError = false; + for (var status = iterator.next(); !status.done; status = iterator.next()) { + var _a = status.value, prop = _a.errorNode, next = _a.innerExpression, nameType = _a.nameType, errorMessage = _a.errorMessage; + var targetPropType = getBestMatchIndexedAccessTypeOrUndefined(source, target, nameType); + if (!targetPropType || targetPropType.flags & 8388608 /* IndexedAccess */) + continue; // Don't elaborate on indexes on generic variables + var sourcePropType = getIndexedAccessTypeOrUndefined(source, nameType); + if (sourcePropType && !checkTypeRelatedTo(sourcePropType, targetPropType, relation, /*errorNode*/ undefined)) { + var elaborated = next && elaborateError(next, sourcePropType, targetPropType, relation, /*headMessage*/ undefined, containingMessageChain, errorOutputContainer); + if (elaborated) { + reportedError = true; + } + else { + // Issue error on the prop itself, since the prop couldn't elaborate the error + var resultObj = errorOutputContainer || {}; + // Use the expression type, if available + var specificSource = next ? checkExpressionForMutableLocationWithContextualType(next, sourcePropType) : sourcePropType; + var result = checkTypeRelatedTo(specificSource, targetPropType, relation, prop, errorMessage, containingMessageChain, resultObj); + if (result && specificSource !== sourcePropType) { + // If for whatever reason the expression type doesn't yield an error, make sure we still issue an error on the sourcePropType + checkTypeRelatedTo(sourcePropType, targetPropType, relation, prop, errorMessage, containingMessageChain, resultObj); + } + if (resultObj.errors) { + var reportedDiag = resultObj.errors[resultObj.errors.length - 1]; + var propertyName = isTypeUsableAsPropertyName(nameType) ? getPropertyNameFromType(nameType) : undefined; + var targetProp = propertyName !== undefined ? getPropertyOfType(target, propertyName) : undefined; + var issuedElaboration = false; + if (!targetProp) { + var indexInfo = isTypeAssignableToKind(nameType, 296 /* NumberLike */) && getIndexInfoOfType(target, 1 /* Number */) || + getIndexInfoOfType(target, 0 /* String */) || + undefined; + if (indexInfo && indexInfo.declaration && !ts.getSourceFileOfNode(indexInfo.declaration).hasNoDefaultLib) { + issuedElaboration = true; + ts.addRelatedInfo(reportedDiag, ts.createDiagnosticForNode(indexInfo.declaration, ts.Diagnostics.The_expected_type_comes_from_this_index_signature)); + } + } + if (!issuedElaboration && (targetProp && ts.length(targetProp.declarations) || target.symbol && ts.length(target.symbol.declarations))) { + var targetNode = targetProp && ts.length(targetProp.declarations) ? targetProp.declarations[0] : target.symbol.declarations[0]; + if (!ts.getSourceFileOfNode(targetNode).hasNoDefaultLib) { + ts.addRelatedInfo(reportedDiag, ts.createDiagnosticForNode(targetNode, ts.Diagnostics.The_expected_type_comes_from_property_0_which_is_declared_here_on_type_1, propertyName && !(nameType.flags & 8192 /* UniqueESSymbol */) ? ts.unescapeLeadingUnderscores(propertyName) : typeToString(nameType), typeToString(target))); + } + } + } + reportedError = true; + } + } + } + return reportedError; + } + function generateJsxAttributes(node) { + var _i, _a, prop; + return __generator(this, function (_b) { + switch (_b.label) { + case 0: + if (!ts.length(node.properties)) + return [2 /*return*/]; + _i = 0, _a = node.properties; + _b.label = 1; + case 1: + if (!(_i < _a.length)) return [3 /*break*/, 4]; + prop = _a[_i]; + if (ts.isJsxSpreadAttribute(prop)) + return [3 /*break*/, 3]; + return [4 /*yield*/, { errorNode: prop.name, innerExpression: prop.initializer, nameType: getLiteralType(ts.idText(prop.name)) }]; + case 2: + _b.sent(); + _b.label = 3; + case 3: + _i++; + return [3 /*break*/, 1]; + case 4: return [2 /*return*/]; + } + }); + } + function generateJsxChildren(node, getInvalidTextDiagnostic) { + var memberOffset, i, child, nameType, elem; + return __generator(this, function (_a) { + switch (_a.label) { + case 0: + if (!ts.length(node.children)) + return [2 /*return*/]; + memberOffset = 0; + i = 0; + _a.label = 1; + case 1: + if (!(i < node.children.length)) return [3 /*break*/, 5]; + child = node.children[i]; + nameType = getLiteralType(i - memberOffset); + elem = getElaborationElementForJsxChild(child, nameType, getInvalidTextDiagnostic); + if (!elem) return [3 /*break*/, 3]; + return [4 /*yield*/, elem]; + case 2: + _a.sent(); + return [3 /*break*/, 4]; + case 3: + memberOffset++; + _a.label = 4; + case 4: + i++; + return [3 /*break*/, 1]; + case 5: return [2 /*return*/]; + } + }); + } + function getElaborationElementForJsxChild(child, nameType, getInvalidTextDiagnostic) { + switch (child.kind) { + case 276 /* JsxExpression */: + // child is of the type of the expression + return { errorNode: child, innerExpression: child.expression, nameType: nameType }; + case 11 /* JsxText */: + if (child.containsOnlyTriviaWhiteSpaces) { + break; // Whitespace only jsx text isn't real jsx text + } + // child is a string + return { errorNode: child, innerExpression: undefined, nameType: nameType, errorMessage: getInvalidTextDiagnostic() }; + case 266 /* JsxElement */: + case 267 /* JsxSelfClosingElement */: + case 270 /* JsxFragment */: + // child is of type JSX.Element + return { errorNode: child, innerExpression: child, nameType: nameType }; + default: + return ts.Debug.assertNever(child, "Found invalid jsx child"); + } + } + function getSemanticJsxChildren(children) { + return ts.filter(children, function (i) { return !ts.isJsxText(i) || !i.containsOnlyTriviaWhiteSpaces; }); + } + function elaborateJsxComponents(node, source, target, relation, containingMessageChain, errorOutputContainer) { + var result = elaborateElementwise(generateJsxAttributes(node), source, target, relation, containingMessageChain, errorOutputContainer); + var invalidTextDiagnostic; + if (ts.isJsxOpeningElement(node.parent) && ts.isJsxElement(node.parent.parent)) { + var containingElement = node.parent.parent; + var childPropName = getJsxElementChildrenPropertyName(getJsxNamespaceAt(node)); + var childrenPropName = childPropName === undefined ? "children" : ts.unescapeLeadingUnderscores(childPropName); + var childrenNameType = getLiteralType(childrenPropName); + var childrenTargetType = getIndexedAccessType(target, childrenNameType); + var validChildren = getSemanticJsxChildren(containingElement.children); + if (!ts.length(validChildren)) { + return result; + } + var moreThanOneRealChildren = ts.length(validChildren) > 1; + var arrayLikeTargetParts = filterType(childrenTargetType, isArrayOrTupleLikeType); + var nonArrayLikeTargetParts = filterType(childrenTargetType, function (t) { return !isArrayOrTupleLikeType(t); }); + if (moreThanOneRealChildren) { + if (arrayLikeTargetParts !== neverType) { + var realSource = createTupleType(checkJsxChildren(containingElement, 0 /* Normal */)); + var children = generateJsxChildren(containingElement, getInvalidTextualChildDiagnostic); + result = elaborateElementwise(children, realSource, arrayLikeTargetParts, relation, containingMessageChain, errorOutputContainer) || result; + } + else if (!isTypeRelatedTo(getIndexedAccessType(source, childrenNameType), childrenTargetType, relation)) { + // arity mismatch + result = true; + var diag = error(containingElement.openingElement.tagName, ts.Diagnostics.This_JSX_tag_s_0_prop_expects_a_single_child_of_type_1_but_multiple_children_were_provided, childrenPropName, typeToString(childrenTargetType)); + if (errorOutputContainer && errorOutputContainer.skipLogging) { + (errorOutputContainer.errors || (errorOutputContainer.errors = [])).push(diag); + } + } + } + else { + if (nonArrayLikeTargetParts !== neverType) { + var child = validChildren[0]; + var elem_1 = getElaborationElementForJsxChild(child, childrenNameType, getInvalidTextualChildDiagnostic); + if (elem_1) { + result = elaborateElementwise((function () { return __generator(this, function (_a) { + switch (_a.label) { + case 0: return [4 /*yield*/, elem_1]; + case 1: + _a.sent(); + return [2 /*return*/]; + } + }); })(), source, target, relation, containingMessageChain, errorOutputContainer) || result; + } + } + else if (!isTypeRelatedTo(getIndexedAccessType(source, childrenNameType), childrenTargetType, relation)) { + // arity mismatch + result = true; + var diag = error(containingElement.openingElement.tagName, ts.Diagnostics.This_JSX_tag_s_0_prop_expects_type_1_which_requires_multiple_children_but_only_a_single_child_was_provided, childrenPropName, typeToString(childrenTargetType)); + if (errorOutputContainer && errorOutputContainer.skipLogging) { + (errorOutputContainer.errors || (errorOutputContainer.errors = [])).push(diag); + } + } + } + } + return result; + function getInvalidTextualChildDiagnostic() { + if (!invalidTextDiagnostic) { + var tagNameText = ts.getTextOfNode(node.parent.tagName); + var childPropName = getJsxElementChildrenPropertyName(getJsxNamespaceAt(node)); + var childrenPropName = childPropName === undefined ? "children" : ts.unescapeLeadingUnderscores(childPropName); + var childrenTargetType = getIndexedAccessType(target, getLiteralType(childrenPropName)); + var diagnostic = ts.Diagnostics._0_components_don_t_accept_text_as_child_elements_Text_in_JSX_has_the_type_string_but_the_expected_type_of_1_is_2; + invalidTextDiagnostic = __assign(__assign({}, diagnostic), { key: "!!ALREADY FORMATTED!!", message: ts.formatMessage(/*_dummy*/ undefined, diagnostic, tagNameText, childrenPropName, typeToString(childrenTargetType)) }); + } + return invalidTextDiagnostic; + } + } + function generateLimitedTupleElements(node, target) { + var len, i, elem, nameType; + return __generator(this, function (_a) { + switch (_a.label) { + case 0: + len = ts.length(node.elements); + if (!len) + return [2 /*return*/]; + i = 0; + _a.label = 1; + case 1: + if (!(i < len)) return [3 /*break*/, 4]; + // Skip elements which do not exist in the target - a length error on the tuple overall is likely better than an error on a mismatched index signature + if (isTupleLikeType(target) && !getPropertyOfType(target, ("" + i))) + return [3 /*break*/, 3]; + elem = node.elements[i]; + if (ts.isOmittedExpression(elem)) + return [3 /*break*/, 3]; + nameType = getLiteralType(i); + return [4 /*yield*/, { errorNode: elem, innerExpression: elem, nameType: nameType }]; + case 2: + _a.sent(); + _a.label = 3; + case 3: + i++; + return [3 /*break*/, 1]; + case 4: return [2 /*return*/]; + } + }); + } + function elaborateArrayLiteral(node, source, target, relation, containingMessageChain, errorOutputContainer) { + if (target.flags & 131068 /* Primitive */) + return false; + if (isTupleLikeType(source)) { + return elaborateElementwise(generateLimitedTupleElements(node, target), source, target, relation, containingMessageChain, errorOutputContainer); + } + // recreate a tuple from the elements, if possible + // Since we're re-doing the expression type, we need to reapply the contextual type + var oldContext = node.contextualType; + node.contextualType = target; + try { + var tupleizedType = checkArrayLiteral(node, 1 /* Contextual */, /*forceTuple*/ true); + node.contextualType = oldContext; + if (isTupleLikeType(tupleizedType)) { + return elaborateElementwise(generateLimitedTupleElements(node, target), tupleizedType, target, relation, containingMessageChain, errorOutputContainer); + } + return false; + } + finally { + node.contextualType = oldContext; + } + } + function generateObjectLiteralElements(node) { + var _i, _a, prop, type, _b; + return __generator(this, function (_c) { + switch (_c.label) { + case 0: + if (!ts.length(node.properties)) + return [2 /*return*/]; + _i = 0, _a = node.properties; + _c.label = 1; + case 1: + if (!(_i < _a.length)) return [3 /*break*/, 8]; + prop = _a[_i]; + if (ts.isSpreadAssignment(prop)) + return [3 /*break*/, 7]; + type = getLiteralTypeFromProperty(getSymbolOfNode(prop), 8576 /* StringOrNumberLiteralOrUnique */); + if (!type || (type.flags & 131072 /* Never */)) { + return [3 /*break*/, 7]; + } + _b = prop.kind; + switch (_b) { + case 164 /* SetAccessor */: return [3 /*break*/, 2]; + case 163 /* GetAccessor */: return [3 /*break*/, 2]; + case 161 /* MethodDeclaration */: return [3 /*break*/, 2]; + case 282 /* ShorthandPropertyAssignment */: return [3 /*break*/, 2]; + case 281 /* PropertyAssignment */: return [3 /*break*/, 4]; + } + return [3 /*break*/, 6]; + case 2: return [4 /*yield*/, { errorNode: prop.name, innerExpression: undefined, nameType: type }]; + case 3: + _c.sent(); + return [3 /*break*/, 7]; + case 4: return [4 /*yield*/, { errorNode: prop.name, innerExpression: prop.initializer, nameType: type, errorMessage: ts.isComputedNonLiteralName(prop.name) ? ts.Diagnostics.Type_of_computed_property_s_value_is_0_which_is_not_assignable_to_type_1 : undefined }]; + case 5: + _c.sent(); + return [3 /*break*/, 7]; + case 6: + ts.Debug.assertNever(prop); + _c.label = 7; + case 7: + _i++; + return [3 /*break*/, 1]; + case 8: return [2 /*return*/]; + } + }); + } + function elaborateObjectLiteral(node, source, target, relation, containingMessageChain, errorOutputContainer) { + if (target.flags & 131068 /* Primitive */) + return false; + return elaborateElementwise(generateObjectLiteralElements(node), source, target, relation, containingMessageChain, errorOutputContainer); + } + /** + * This is *not* a bi-directional relationship. + * If one needs to check both directions for comparability, use a second call to this function or 'isTypeComparableTo'. + */ + function checkTypeComparableTo(source, target, errorNode, headMessage, containingMessageChain) { + return checkTypeRelatedTo(source, target, comparableRelation, errorNode, headMessage, containingMessageChain); + } + function isSignatureAssignableTo(source, target, ignoreReturnTypes) { + return compareSignaturesRelated(source, target, ignoreReturnTypes ? 4 /* IgnoreReturnTypes */ : 0, /*reportErrors*/ false, + /*errorReporter*/ undefined, /*errorReporter*/ undefined, compareTypesAssignable, /*reportUnreliableMarkers*/ undefined) !== 0 /* False */; + } + /** + * Returns true if `s` is `(...args: any[]) => any` or `(this: any, ...args: any[]) => any` + */ + function isAnySignature(s) { + return !s.typeParameters && (!s.thisParameter || isTypeAny(getTypeOfParameter(s.thisParameter))) && s.parameters.length === 1 && + signatureHasRestParameter(s) && (getTypeOfParameter(s.parameters[0]) === anyArrayType || isTypeAny(getTypeOfParameter(s.parameters[0]))) && + isTypeAny(getReturnTypeOfSignature(s)); + } + /** + * See signatureRelatedTo, compareSignaturesIdentical + */ + function compareSignaturesRelated(source, target, checkMode, reportErrors, errorReporter, incompatibleErrorReporter, compareTypes, reportUnreliableMarkers) { + // TODO (drosen): De-duplicate code between related functions. + if (source === target) { + return -1 /* True */; + } + if (isAnySignature(target)) { + return -1 /* True */; + } + var targetCount = getParameterCount(target); + var sourceHasMoreParameters = !hasEffectiveRestParameter(target) && + (checkMode & 8 /* StrictArity */ ? hasEffectiveRestParameter(source) || getParameterCount(source) > targetCount : getMinArgumentCount(source) > targetCount); + if (sourceHasMoreParameters) { + return 0 /* False */; + } + if (source.typeParameters && source.typeParameters !== target.typeParameters) { + target = getCanonicalSignature(target); + source = instantiateSignatureInContextOf(source, target, /*inferenceContext*/ undefined, compareTypes); + } + var sourceCount = getParameterCount(source); + var sourceRestType = getNonArrayRestType(source); + var targetRestType = getNonArrayRestType(target); + if (sourceRestType || targetRestType) { + void instantiateType(sourceRestType || targetRestType, reportUnreliableMarkers); + } + if (sourceRestType && targetRestType && sourceCount !== targetCount) { + // We're not able to relate misaligned complex rest parameters + return 0 /* False */; + } + var kind = target.declaration ? target.declaration.kind : 0 /* Unknown */; + var strictVariance = !(checkMode & 3 /* Callback */) && strictFunctionTypes && kind !== 161 /* MethodDeclaration */ && + kind !== 160 /* MethodSignature */ && kind !== 162 /* Constructor */; + var result = -1 /* True */; + var sourceThisType = getThisTypeOfSignature(source); + if (sourceThisType && sourceThisType !== voidType) { + var targetThisType = getThisTypeOfSignature(target); + if (targetThisType) { + // void sources are assignable to anything. + var related = !strictVariance && compareTypes(sourceThisType, targetThisType, /*reportErrors*/ false) + || compareTypes(targetThisType, sourceThisType, reportErrors); + if (!related) { + if (reportErrors) { + errorReporter(ts.Diagnostics.The_this_types_of_each_signature_are_incompatible); + } + return 0 /* False */; + } + result &= related; + } + } + var paramCount = sourceRestType || targetRestType ? Math.min(sourceCount, targetCount) : Math.max(sourceCount, targetCount); + var restIndex = sourceRestType || targetRestType ? paramCount - 1 : -1; + for (var i = 0; i < paramCount; i++) { + var sourceType = i === restIndex ? getRestTypeAtPosition(source, i) : getTypeAtPosition(source, i); + var targetType = i === restIndex ? getRestTypeAtPosition(target, i) : getTypeAtPosition(target, i); + // In order to ensure that any generic type Foo is at least co-variant with respect to T no matter + // how Foo uses T, we need to relate parameters bi-variantly (given that parameters are input positions, + // they naturally relate only contra-variantly). However, if the source and target parameters both have + // function types with a single call signature, we know we are relating two callback parameters. In + // that case it is sufficient to only relate the parameters of the signatures co-variantly because, + // similar to return values, callback parameters are output positions. This means that a Promise, + // where T is used only in callback parameter positions, will be co-variant (as opposed to bi-variant) + // with respect to T. + var sourceSig = checkMode & 3 /* Callback */ ? undefined : getSingleCallSignature(getNonNullableType(sourceType)); + var targetSig = checkMode & 3 /* Callback */ ? undefined : getSingleCallSignature(getNonNullableType(targetType)); + var callbacks = sourceSig && targetSig && !getTypePredicateOfSignature(sourceSig) && !getTypePredicateOfSignature(targetSig) && + (getFalsyFlags(sourceType) & 98304 /* Nullable */) === (getFalsyFlags(targetType) & 98304 /* Nullable */); + var related = callbacks ? + compareSignaturesRelated(targetSig, sourceSig, (checkMode & 8 /* StrictArity */) | (strictVariance ? 2 /* StrictCallback */ : 1 /* BivariantCallback */), reportErrors, errorReporter, incompatibleErrorReporter, compareTypes, reportUnreliableMarkers) : + !(checkMode & 3 /* Callback */) && !strictVariance && compareTypes(sourceType, targetType, /*reportErrors*/ false) || compareTypes(targetType, sourceType, reportErrors); + // With strict arity, (x: number | undefined) => void is a subtype of (x?: number | undefined) => void + if (related && checkMode & 8 /* StrictArity */ && i >= getMinArgumentCount(source) && i < getMinArgumentCount(target) && compareTypes(sourceType, targetType, /*reportErrors*/ false)) { + related = 0 /* False */; + } + if (!related) { + if (reportErrors) { + errorReporter(ts.Diagnostics.Types_of_parameters_0_and_1_are_incompatible, ts.unescapeLeadingUnderscores(getParameterNameAtPosition(source, i)), ts.unescapeLeadingUnderscores(getParameterNameAtPosition(target, i))); + } + return 0 /* False */; + } + result &= related; + } + if (!(checkMode & 4 /* IgnoreReturnTypes */)) { + // If a signature resolution is already in-flight, skip issuing a circularity error + // here and just use the `any` type directly + var targetReturnType = isResolvingReturnTypeOfSignature(target) ? anyType + : target.declaration && isJSConstructor(target.declaration) ? getDeclaredTypeOfClassOrInterface(getMergedSymbol(target.declaration.symbol)) + : getReturnTypeOfSignature(target); + if (targetReturnType === voidType) { + return result; + } + var sourceReturnType = isResolvingReturnTypeOfSignature(source) ? anyType + : source.declaration && isJSConstructor(source.declaration) ? getDeclaredTypeOfClassOrInterface(getMergedSymbol(source.declaration.symbol)) + : getReturnTypeOfSignature(source); + // The following block preserves behavior forbidding boolean returning functions from being assignable to type guard returning functions + var targetTypePredicate = getTypePredicateOfSignature(target); + if (targetTypePredicate) { + var sourceTypePredicate = getTypePredicateOfSignature(source); + if (sourceTypePredicate) { + result &= compareTypePredicateRelatedTo(sourceTypePredicate, targetTypePredicate, reportErrors, errorReporter, compareTypes); + } + else if (ts.isIdentifierTypePredicate(targetTypePredicate)) { + if (reportErrors) { + errorReporter(ts.Diagnostics.Signature_0_must_be_a_type_predicate, signatureToString(source)); + } + return 0 /* False */; + } + } + else { + // When relating callback signatures, we still need to relate return types bi-variantly as otherwise + // the containing type wouldn't be co-variant. For example, interface Foo { add(cb: () => T): void } + // wouldn't be co-variant for T without this rule. + result &= checkMode & 1 /* BivariantCallback */ && compareTypes(targetReturnType, sourceReturnType, /*reportErrors*/ false) || + compareTypes(sourceReturnType, targetReturnType, reportErrors); + if (!result && reportErrors && incompatibleErrorReporter) { + incompatibleErrorReporter(sourceReturnType, targetReturnType); + } + } + } + return result; + } + function compareTypePredicateRelatedTo(source, target, reportErrors, errorReporter, compareTypes) { + if (source.kind !== target.kind) { + if (reportErrors) { + errorReporter(ts.Diagnostics.A_this_based_type_guard_is_not_compatible_with_a_parameter_based_type_guard); + errorReporter(ts.Diagnostics.Type_predicate_0_is_not_assignable_to_1, typePredicateToString(source), typePredicateToString(target)); + } + return 0 /* False */; + } + if (source.kind === 1 /* Identifier */ || source.kind === 3 /* AssertsIdentifier */) { + if (source.parameterIndex !== target.parameterIndex) { + if (reportErrors) { + errorReporter(ts.Diagnostics.Parameter_0_is_not_in_the_same_position_as_parameter_1, source.parameterName, target.parameterName); + errorReporter(ts.Diagnostics.Type_predicate_0_is_not_assignable_to_1, typePredicateToString(source), typePredicateToString(target)); + } + return 0 /* False */; + } + } + var related = source.type === target.type ? -1 /* True */ : + source.type && target.type ? compareTypes(source.type, target.type, reportErrors) : + 0 /* False */; + if (related === 0 /* False */ && reportErrors) { + errorReporter(ts.Diagnostics.Type_predicate_0_is_not_assignable_to_1, typePredicateToString(source), typePredicateToString(target)); + } + return related; + } + function isImplementationCompatibleWithOverload(implementation, overload) { + var erasedSource = getErasedSignature(implementation); + var erasedTarget = getErasedSignature(overload); + // First see if the return types are compatible in either direction. + var sourceReturnType = getReturnTypeOfSignature(erasedSource); + var targetReturnType = getReturnTypeOfSignature(erasedTarget); + if (targetReturnType === voidType + || isTypeRelatedTo(targetReturnType, sourceReturnType, assignableRelation) + || isTypeRelatedTo(sourceReturnType, targetReturnType, assignableRelation)) { + return isSignatureAssignableTo(erasedSource, erasedTarget, /*ignoreReturnTypes*/ true); + } + return false; + } + function isEmptyResolvedType(t) { + return t !== anyFunctionType && + t.properties.length === 0 && + t.callSignatures.length === 0 && + t.constructSignatures.length === 0 && + !t.stringIndexInfo && + !t.numberIndexInfo; + } + function isEmptyObjectType(type) { + return type.flags & 524288 /* Object */ ? !isGenericMappedType(type) && isEmptyResolvedType(resolveStructuredTypeMembers(type)) : + type.flags & 67108864 /* NonPrimitive */ ? true : + type.flags & 1048576 /* Union */ ? ts.some(type.types, isEmptyObjectType) : + type.flags & 2097152 /* Intersection */ ? ts.every(type.types, isEmptyObjectType) : + false; + } + function isEmptyAnonymousObjectType(type) { + return !!(ts.getObjectFlags(type) & 16 /* Anonymous */) && isEmptyObjectType(type); + } + function isStringIndexSignatureOnlyType(type) { + return type.flags & 524288 /* Object */ && !isGenericMappedType(type) && getPropertiesOfType(type).length === 0 && getIndexInfoOfType(type, 0 /* String */) && !getIndexInfoOfType(type, 1 /* Number */) || + type.flags & 3145728 /* UnionOrIntersection */ && ts.every(type.types, isStringIndexSignatureOnlyType) || + false; + } + function isEnumTypeRelatedTo(sourceSymbol, targetSymbol, errorReporter) { + if (sourceSymbol === targetSymbol) { + return true; + } + var id = getSymbolId(sourceSymbol) + "," + getSymbolId(targetSymbol); + var entry = enumRelation.get(id); + if (entry !== undefined && !(!(entry & 4 /* Reported */) && entry & 2 /* Failed */ && errorReporter)) { + return !!(entry & 1 /* Succeeded */); + } + if (sourceSymbol.escapedName !== targetSymbol.escapedName || !(sourceSymbol.flags & 256 /* RegularEnum */) || !(targetSymbol.flags & 256 /* RegularEnum */)) { + enumRelation.set(id, 2 /* Failed */ | 4 /* Reported */); + return false; + } + var targetEnumType = getTypeOfSymbol(targetSymbol); + for (var _i = 0, _a = getPropertiesOfType(getTypeOfSymbol(sourceSymbol)); _i < _a.length; _i++) { + var property = _a[_i]; + if (property.flags & 8 /* EnumMember */) { + var targetProperty = getPropertyOfType(targetEnumType, property.escapedName); + if (!targetProperty || !(targetProperty.flags & 8 /* EnumMember */)) { + if (errorReporter) { + errorReporter(ts.Diagnostics.Property_0_is_missing_in_type_1, ts.symbolName(property), typeToString(getDeclaredTypeOfSymbol(targetSymbol), /*enclosingDeclaration*/ undefined, 64 /* UseFullyQualifiedType */)); + enumRelation.set(id, 2 /* Failed */ | 4 /* Reported */); + } + else { + enumRelation.set(id, 2 /* Failed */); + } + return false; + } + } + } + enumRelation.set(id, 1 /* Succeeded */); + return true; + } + function isSimpleTypeRelatedTo(source, target, relation, errorReporter) { + var s = source.flags; + var t = target.flags; + if (t & 3 /* AnyOrUnknown */ || s & 131072 /* Never */ || source === wildcardType) + return true; + if (t & 131072 /* Never */) + return false; + if (s & 132 /* StringLike */ && t & 4 /* String */) + return true; + if (s & 128 /* StringLiteral */ && s & 1024 /* EnumLiteral */ && + t & 128 /* StringLiteral */ && !(t & 1024 /* EnumLiteral */) && + source.value === target.value) + return true; + if (s & 296 /* NumberLike */ && t & 8 /* Number */) + return true; + if (s & 256 /* NumberLiteral */ && s & 1024 /* EnumLiteral */ && + t & 256 /* NumberLiteral */ && !(t & 1024 /* EnumLiteral */) && + source.value === target.value) + return true; + if (s & 2112 /* BigIntLike */ && t & 64 /* BigInt */) + return true; + if (s & 528 /* BooleanLike */ && t & 16 /* Boolean */) + return true; + if (s & 12288 /* ESSymbolLike */ && t & 4096 /* ESSymbol */) + return true; + if (s & 32 /* Enum */ && t & 32 /* Enum */ && isEnumTypeRelatedTo(source.symbol, target.symbol, errorReporter)) + return true; + if (s & 1024 /* EnumLiteral */ && t & 1024 /* EnumLiteral */) { + if (s & 1048576 /* Union */ && t & 1048576 /* Union */ && isEnumTypeRelatedTo(source.symbol, target.symbol, errorReporter)) + return true; + if (s & 2944 /* Literal */ && t & 2944 /* Literal */ && + source.value === target.value && + isEnumTypeRelatedTo(getParentOfSymbol(source.symbol), getParentOfSymbol(target.symbol), errorReporter)) + return true; + } + if (s & 32768 /* Undefined */ && (!strictNullChecks || t & (32768 /* Undefined */ | 16384 /* Void */))) + return true; + if (s & 65536 /* Null */ && (!strictNullChecks || t & 65536 /* Null */)) + return true; + if (s & 524288 /* Object */ && t & 67108864 /* NonPrimitive */) + return true; + if (relation === assignableRelation || relation === comparableRelation) { + if (s & 1 /* Any */) + return true; + // Type number or any numeric literal type is assignable to any numeric enum type or any + // numeric enum literal type. This rule exists for backwards compatibility reasons because + // bit-flag enum types sometimes look like literal enum types with numeric literal values. + if (s & (8 /* Number */ | 256 /* NumberLiteral */) && !(s & 1024 /* EnumLiteral */) && (t & 32 /* Enum */ || t & 256 /* NumberLiteral */ && t & 1024 /* EnumLiteral */)) + return true; + } + return false; + } + function isTypeRelatedTo(source, target, relation) { + if (isFreshLiteralType(source)) { + source = source.regularType; + } + if (isFreshLiteralType(target)) { + target = target.regularType; + } + if (source === target) { + return true; + } + if (relation !== identityRelation) { + if (relation === comparableRelation && !(target.flags & 131072 /* Never */) && isSimpleTypeRelatedTo(target, source, relation) || isSimpleTypeRelatedTo(source, target, relation)) { + return true; + } + } + else { + if (!(source.flags & 3145728 /* UnionOrIntersection */) && !(target.flags & 3145728 /* UnionOrIntersection */) && + source.flags !== target.flags && !(source.flags & 66584576 /* Substructure */)) + return false; + } + if (source.flags & 524288 /* Object */ && target.flags & 524288 /* Object */) { + var related = relation.get(getRelationKey(source, target, 0 /* None */, relation)); + if (related !== undefined) { + return !!(related & 1 /* Succeeded */); + } + } + if (source.flags & 66846720 /* StructuredOrInstantiable */ || target.flags & 66846720 /* StructuredOrInstantiable */) { + return checkTypeRelatedTo(source, target, relation, /*errorNode*/ undefined); + } + return false; + } + function isIgnoredJsxProperty(source, sourceProp) { + return ts.getObjectFlags(source) & 4096 /* JsxAttributes */ && !isUnhyphenatedJsxName(sourceProp.escapedName); + } + function getNormalizedType(type, writing) { + while (true) { + var t = isFreshLiteralType(type) ? type.regularType : + ts.getObjectFlags(type) & 4 /* Reference */ && type.node ? createTypeReference(type.target, getTypeArguments(type)) : + type.flags & 3145728 /* UnionOrIntersection */ ? getReducedType(type) : + type.flags & 33554432 /* Substitution */ ? writing ? type.baseType : type.substitute : + type.flags & 25165824 /* Simplifiable */ ? getSimplifiedType(type, writing) : + type; + if (t === type) + break; + type = t; + } + return type; + } + /** + * Checks if 'source' is related to 'target' (e.g.: is a assignable to). + * @param source The left-hand-side of the relation. + * @param target The right-hand-side of the relation. + * @param relation The relation considered. One of 'identityRelation', 'subtypeRelation', 'assignableRelation', or 'comparableRelation'. + * Used as both to determine which checks are performed and as a cache of previously computed results. + * @param errorNode The suggested node upon which all errors will be reported, if defined. This may or may not be the actual node used. + * @param headMessage If the error chain should be prepended by a head message, then headMessage will be used. + * @param containingMessageChain A chain of errors to prepend any new errors found. + * @param errorOutputContainer Return the diagnostic. Do not log if 'skipLogging' is truthy. + */ + function checkTypeRelatedTo(source, target, relation, errorNode, headMessage, containingMessageChain, errorOutputContainer) { + var errorInfo; + var relatedInfo; + var maybeKeys; + var sourceStack; + var targetStack; + var maybeCount = 0; + var depth = 0; + var expandingFlags = 0 /* None */; + var overflow = false; + var overrideNextErrorInfo = 0; // How many `reportRelationError` calls should be skipped in the elaboration pyramid + var lastSkippedInfo; + var incompatibleStack = []; + var inPropertyCheck = false; + ts.Debug.assert(relation !== identityRelation || !errorNode, "no error reporting in identity checking"); + var result = isRelatedTo(source, target, /*reportErrors*/ !!errorNode, headMessage); + if (incompatibleStack.length) { + reportIncompatibleStack(); + } + if (overflow) { + var diag = error(errorNode || currentNode, ts.Diagnostics.Excessive_stack_depth_comparing_types_0_and_1, typeToString(source), typeToString(target)); + if (errorOutputContainer) { + (errorOutputContainer.errors || (errorOutputContainer.errors = [])).push(diag); + } + } + else if (errorInfo) { + if (containingMessageChain) { + var chain = containingMessageChain(); + if (chain) { + ts.concatenateDiagnosticMessageChains(chain, errorInfo); + errorInfo = chain; + } + } + var relatedInformation = void 0; + // Check if we should issue an extra diagnostic to produce a quickfix for a slightly incorrect import statement + if (headMessage && errorNode && !result && source.symbol) { + var links = getSymbolLinks(source.symbol); + if (links.originatingImport && !ts.isImportCall(links.originatingImport)) { + var helpfulRetry = checkTypeRelatedTo(getTypeOfSymbol(links.target), target, relation, /*errorNode*/ undefined); + if (helpfulRetry) { + // Likely an incorrect import. Issue a helpful diagnostic to produce a quickfix to change the import + var diag_1 = ts.createDiagnosticForNode(links.originatingImport, ts.Diagnostics.Type_originates_at_this_import_A_namespace_style_import_cannot_be_called_or_constructed_and_will_cause_a_failure_at_runtime_Consider_using_a_default_import_or_import_require_here_instead); + relatedInformation = ts.append(relatedInformation, diag_1); // Cause the error to appear with the error that triggered it + } + } + } + var diag = ts.createDiagnosticForNodeFromMessageChain(errorNode, errorInfo, relatedInformation); + if (relatedInfo) { + ts.addRelatedInfo.apply(void 0, __spreadArrays([diag], relatedInfo)); + } + if (errorOutputContainer) { + (errorOutputContainer.errors || (errorOutputContainer.errors = [])).push(diag); + } + if (!errorOutputContainer || !errorOutputContainer.skipLogging) { + diagnostics.add(diag); + } + } + if (errorNode && errorOutputContainer && errorOutputContainer.skipLogging && result === 0 /* False */) { + ts.Debug.assert(!!errorOutputContainer.errors, "missed opportunity to interact with error."); + } + return result !== 0 /* False */; + function resetErrorInfo(saved) { + errorInfo = saved.errorInfo; + lastSkippedInfo = saved.lastSkippedInfo; + incompatibleStack = saved.incompatibleStack; + overrideNextErrorInfo = saved.overrideNextErrorInfo; + relatedInfo = saved.relatedInfo; + } + function captureErrorCalculationState() { + return { + errorInfo: errorInfo, + lastSkippedInfo: lastSkippedInfo, + incompatibleStack: incompatibleStack.slice(), + overrideNextErrorInfo: overrideNextErrorInfo, + relatedInfo: !relatedInfo ? undefined : relatedInfo.slice() + }; + } + function reportIncompatibleError(message, arg0, arg1, arg2, arg3) { + overrideNextErrorInfo++; // Suppress the next relation error + lastSkippedInfo = undefined; // Reset skipped info cache + incompatibleStack.push([message, arg0, arg1, arg2, arg3]); + } + function reportIncompatibleStack() { + var stack = incompatibleStack; + incompatibleStack = []; + var info = lastSkippedInfo; + lastSkippedInfo = undefined; + if (stack.length === 1) { + reportError.apply(void 0, stack[0]); + if (info) { + // Actually do the last relation error + reportRelationError.apply(void 0, __spreadArrays([/*headMessage*/ undefined], info)); + } + return; + } + // The first error will be the innermost, while the last will be the outermost - so by popping off the end, + // we can build from left to right + var path = ""; + var secondaryRootErrors = []; + while (stack.length) { + var _a = stack.pop(), msg = _a[0], args = _a.slice(1); + switch (msg.code) { + case ts.Diagnostics.Types_of_property_0_are_incompatible.code: { + // Parenthesize a `new` if there is one + if (path.indexOf("new ") === 0) { + path = "(" + path + ")"; + } + var str = "" + args[0]; + // If leading, just print back the arg (irrespective of if it's a valid identifier) + if (path.length === 0) { + path = "" + str; + } + // Otherwise write a dotted name if possible + else if (ts.isIdentifierText(str, compilerOptions.target)) { + path = path + "." + str; + } + // Failing that, check if the name is already a computed name + else if (str[0] === "[" && str[str.length - 1] === "]") { + path = "" + path + str; + } + // And finally write out a computed name as a last resort + else { + path = path + "[" + str + "]"; + } + break; + } + case ts.Diagnostics.Call_signature_return_types_0_and_1_are_incompatible.code: + case ts.Diagnostics.Construct_signature_return_types_0_and_1_are_incompatible.code: + case ts.Diagnostics.Call_signatures_with_no_arguments_have_incompatible_return_types_0_and_1.code: + case ts.Diagnostics.Construct_signatures_with_no_arguments_have_incompatible_return_types_0_and_1.code: { + if (path.length === 0) { + // Don't flatten signature compatability errors at the start of a chain - instead prefer + // to unify (the with no arguments bit is excessive for printback) and print them back + var mappedMsg = msg; + if (msg.code === ts.Diagnostics.Call_signatures_with_no_arguments_have_incompatible_return_types_0_and_1.code) { + mappedMsg = ts.Diagnostics.Call_signature_return_types_0_and_1_are_incompatible; + } + else if (msg.code === ts.Diagnostics.Construct_signatures_with_no_arguments_have_incompatible_return_types_0_and_1.code) { + mappedMsg = ts.Diagnostics.Construct_signature_return_types_0_and_1_are_incompatible; + } + secondaryRootErrors.unshift([mappedMsg, args[0], args[1]]); + } + else { + var prefix = (msg.code === ts.Diagnostics.Construct_signature_return_types_0_and_1_are_incompatible.code || + msg.code === ts.Diagnostics.Construct_signatures_with_no_arguments_have_incompatible_return_types_0_and_1.code) + ? "new " + : ""; + var params = (msg.code === ts.Diagnostics.Call_signatures_with_no_arguments_have_incompatible_return_types_0_and_1.code || + msg.code === ts.Diagnostics.Construct_signatures_with_no_arguments_have_incompatible_return_types_0_and_1.code) + ? "" + : "..."; + path = "" + prefix + path + "(" + params + ")"; + } + break; + } + default: + return ts.Debug.fail("Unhandled Diagnostic: " + msg.code); + } + } + if (path) { + reportError(path[path.length - 1] === ")" + ? ts.Diagnostics.The_types_returned_by_0_are_incompatible_between_these_types + : ts.Diagnostics.The_types_of_0_are_incompatible_between_these_types, path); + } + else { + // Remove the innermost secondary error as it will duplicate the error already reported by `reportRelationError` on entry + secondaryRootErrors.shift(); + } + for (var _i = 0, secondaryRootErrors_1 = secondaryRootErrors; _i < secondaryRootErrors_1.length; _i++) { + var _b = secondaryRootErrors_1[_i], msg = _b[0], args = _b.slice(1); + var originalValue = msg.elidedInCompatabilityPyramid; + msg.elidedInCompatabilityPyramid = false; // Teporarily override elision to ensure error is reported + reportError.apply(void 0, __spreadArrays([msg], args)); + msg.elidedInCompatabilityPyramid = originalValue; + } + if (info) { + // Actually do the last relation error + reportRelationError.apply(void 0, __spreadArrays([/*headMessage*/ undefined], info)); + } + } + function reportError(message, arg0, arg1, arg2, arg3) { + ts.Debug.assert(!!errorNode); + if (incompatibleStack.length) + reportIncompatibleStack(); + if (message.elidedInCompatabilityPyramid) + return; + errorInfo = ts.chainDiagnosticMessages(errorInfo, message, arg0, arg1, arg2, arg3); + } + function associateRelatedInfo(info) { + ts.Debug.assert(!!errorInfo); + if (!relatedInfo) { + relatedInfo = [info]; + } + else { + relatedInfo.push(info); + } + } + function reportRelationError(message, source, target) { + if (incompatibleStack.length) + reportIncompatibleStack(); + var _a = getTypeNamesForErrorDisplay(source, target), sourceType = _a[0], targetType = _a[1]; + if (target.flags & 262144 /* TypeParameter */) { + var constraint = getBaseConstraintOfType(target); + var constraintElab = constraint && isTypeAssignableTo(source, constraint); + if (constraintElab) { + reportError(ts.Diagnostics._0_is_assignable_to_the_constraint_of_type_1_but_1_could_be_instantiated_with_a_different_subtype_of_constraint_2, sourceType, targetType, typeToString(constraint)); + } + else { + reportError(ts.Diagnostics._0_could_be_instantiated_with_an_arbitrary_type_which_could_be_unrelated_to_1, targetType, sourceType); + } + } + if (!message) { + if (relation === comparableRelation) { + message = ts.Diagnostics.Type_0_is_not_comparable_to_type_1; + } + else if (sourceType === targetType) { + message = ts.Diagnostics.Type_0_is_not_assignable_to_type_1_Two_different_types_with_this_name_exist_but_they_are_unrelated; + } + else { + message = ts.Diagnostics.Type_0_is_not_assignable_to_type_1; + } + } + reportError(message, sourceType, targetType); + } + function tryElaborateErrorsForPrimitivesAndObjects(source, target) { + var sourceType = symbolValueDeclarationIsContextSensitive(source.symbol) ? typeToString(source, source.symbol.valueDeclaration) : typeToString(source); + var targetType = symbolValueDeclarationIsContextSensitive(target.symbol) ? typeToString(target, target.symbol.valueDeclaration) : typeToString(target); + if ((globalStringType === source && stringType === target) || + (globalNumberType === source && numberType === target) || + (globalBooleanType === source && booleanType === target) || + (getGlobalESSymbolType(/*reportErrors*/ false) === source && esSymbolType === target)) { + reportError(ts.Diagnostics._0_is_a_primitive_but_1_is_a_wrapper_object_Prefer_using_0_when_possible, targetType, sourceType); + } + } + /** + * Try and elaborate array and tuple errors. Returns false + * if we have found an elaboration, or we should ignore + * any other elaborations when relating the `source` and + * `target` types. + */ + function tryElaborateArrayLikeErrors(source, target, reportErrors) { + /** + * The spec for elaboration is: + * - If the source is a readonly tuple and the target is a mutable array or tuple, elaborate on mutability and skip property elaborations. + * - If the source is a tuple then skip property elaborations if the target is an array or tuple. + * - If the source is a readonly array and the target is a mutable array or tuple, elaborate on mutability and skip property elaborations. + * - If the source an array then skip property elaborations if the target is a tuple. + */ + if (isTupleType(source)) { + if (source.target.readonly && isMutableArrayOrTuple(target)) { + if (reportErrors) { + reportError(ts.Diagnostics.The_type_0_is_readonly_and_cannot_be_assigned_to_the_mutable_type_1, typeToString(source), typeToString(target)); + } + return false; + } + return isTupleType(target) || isArrayType(target); + } + if (isReadonlyArrayType(source) && isMutableArrayOrTuple(target)) { + if (reportErrors) { + reportError(ts.Diagnostics.The_type_0_is_readonly_and_cannot_be_assigned_to_the_mutable_type_1, typeToString(source), typeToString(target)); + } + return false; + } + if (isTupleType(target)) { + return isArrayType(source); + } + return true; + } + /** + * Compare two types and return + * * Ternary.True if they are related with no assumptions, + * * Ternary.Maybe if they are related with assumptions of other relationships, or + * * Ternary.False if they are not related. + */ + function isRelatedTo(originalSource, originalTarget, reportErrors, headMessage, intersectionState) { + if (reportErrors === void 0) { reportErrors = false; } + if (intersectionState === void 0) { intersectionState = 0 /* None */; } + // Before normalization: if `source` is type an object type, and `target` is primitive, + // skip all the checks we don't need and just return `isSimpleTypeRelatedTo` result + if (originalSource.flags & 524288 /* Object */ && originalTarget.flags & 131068 /* Primitive */) { + if (isSimpleTypeRelatedTo(originalSource, originalTarget, relation, reportErrors ? reportError : undefined)) { + return -1 /* True */; + } + reportErrorResults(originalSource, originalTarget, 0 /* False */, !!(ts.getObjectFlags(originalSource) & 4096 /* JsxAttributes */)); + return 0 /* False */; + } + // Normalize the source and target types: Turn fresh literal types into regular literal types, + // turn deferred type references into regular type references, simplify indexed access and + // conditional types, and resolve substitution types to either the substitution (on the source + // side) or the type variable (on the target side). + var source = getNormalizedType(originalSource, /*writing*/ false); + var target = getNormalizedType(originalTarget, /*writing*/ true); + if (source === target) + return -1 /* True */; + if (relation === identityRelation) { + return isIdenticalTo(source, target); + } + // We fastpath comparing a type parameter to exactly its constraint, as this is _super_ common, + // and otherwise, for type parameters in large unions, causes us to need to compare the union to itself, + // as we break down the _target_ union first, _then_ get the source constraint - so for every + // member of the target, we attempt to find a match in the source. This avoids that in cases where + // the target is exactly the constraint. + if (source.flags & 262144 /* TypeParameter */ && getConstraintOfType(source) === target) { + return -1 /* True */; + } + // Try to see if we're relating something like `Foo` -> `Bar | null | undefined`. + // If so, reporting the `null` and `undefined` in the type is hardly useful. + // First, see if we're even relating an object type to a union. + // Then see if the target is stripped down to a single non-union type. + // Note + // * We actually want to remove null and undefined naively here (rather than using getNonNullableType), + // since we don't want to end up with a worse error like "`Foo` is not assignable to `NonNullable`" + // when dealing with generics. + // * We also don't deal with primitive source types, since we already halt elaboration below. + if (target.flags & 1048576 /* Union */ && source.flags & 524288 /* Object */ && + target.types.length <= 3 && maybeTypeOfKind(target, 98304 /* Nullable */)) { + var nullStrippedTarget = extractTypesOfKind(target, ~98304 /* Nullable */); + if (!(nullStrippedTarget.flags & (1048576 /* Union */ | 131072 /* Never */))) { + if (source === nullStrippedTarget) + return -1 /* True */; + target = nullStrippedTarget; + } + } + if (relation === comparableRelation && !(target.flags & 131072 /* Never */) && isSimpleTypeRelatedTo(target, source, relation) || + isSimpleTypeRelatedTo(source, target, relation, reportErrors ? reportError : undefined)) + return -1 /* True */; + var isComparingJsxAttributes = !!(ts.getObjectFlags(source) & 4096 /* JsxAttributes */); + var isPerformingExcessPropertyChecks = !(intersectionState & 2 /* Target */) && (isObjectLiteralType(source) && ts.getObjectFlags(source) & 32768 /* FreshLiteral */); + if (isPerformingExcessPropertyChecks) { + if (hasExcessProperties(source, target, reportErrors)) { + if (reportErrors) { + reportRelationError(headMessage, source, target); + } + return 0 /* False */; + } + } + var isPerformingCommonPropertyChecks = relation !== comparableRelation && !(intersectionState & 2 /* Target */) && + source.flags & (131068 /* Primitive */ | 524288 /* Object */ | 2097152 /* Intersection */) && source !== globalObjectType && + target.flags & (524288 /* Object */ | 2097152 /* Intersection */) && isWeakType(target) && + (getPropertiesOfType(source).length > 0 || typeHasCallOrConstructSignatures(source)); + if (isPerformingCommonPropertyChecks && !hasCommonProperties(source, target, isComparingJsxAttributes)) { + if (reportErrors) { + var calls = getSignaturesOfType(source, 0 /* Call */); + var constructs = getSignaturesOfType(source, 1 /* Construct */); + if (calls.length > 0 && isRelatedTo(getReturnTypeOfSignature(calls[0]), target, /*reportErrors*/ false) || + constructs.length > 0 && isRelatedTo(getReturnTypeOfSignature(constructs[0]), target, /*reportErrors*/ false)) { + reportError(ts.Diagnostics.Value_of_type_0_has_no_properties_in_common_with_type_1_Did_you_mean_to_call_it, typeToString(source), typeToString(target)); + } + else { + reportError(ts.Diagnostics.Type_0_has_no_properties_in_common_with_type_1, typeToString(source), typeToString(target)); + } + } + return 0 /* False */; + } + var result = 0 /* False */; + var saveErrorInfo = captureErrorCalculationState(); + // Note that these checks are specifically ordered to produce correct results. In particular, + // we need to deconstruct unions before intersections (because unions are always at the top), + // and we need to handle "each" relations before "some" relations for the same kind of type. + if (source.flags & 1048576 /* Union */) { + result = relation === comparableRelation ? + someTypeRelatedToType(source, target, reportErrors && !(source.flags & 131068 /* Primitive */), intersectionState) : + eachTypeRelatedToType(source, target, reportErrors && !(source.flags & 131068 /* Primitive */), intersectionState); + } + else { + if (target.flags & 1048576 /* Union */) { + result = typeRelatedToSomeType(getRegularTypeOfObjectLiteral(source), target, reportErrors && !(source.flags & 131068 /* Primitive */) && !(target.flags & 131068 /* Primitive */)); + } + else if (target.flags & 2097152 /* Intersection */) { + result = typeRelatedToEachType(getRegularTypeOfObjectLiteral(source), target, reportErrors, 2 /* Target */); + } + else if (source.flags & 2097152 /* Intersection */) { + // Check to see if any constituents of the intersection are immediately related to the target. + // + // Don't report errors though. Checking whether a constituent is related to the source is not actually + // useful and leads to some confusing error messages. Instead it is better to let the below checks + // take care of this, or to not elaborate at all. For instance, + // + // - For an object type (such as 'C = A & B'), users are usually more interested in structural errors. + // + // - For a union type (such as '(A | B) = (C & D)'), it's better to hold onto the whole intersection + // than to report that 'D' is not assignable to 'A' or 'B'. + // + // - For a primitive type or type parameter (such as 'number = A & B') there is no point in + // breaking the intersection apart. + result = someTypeRelatedToType(source, target, /*reportErrors*/ false, 1 /* Source */); + } + if (!result && (source.flags & 66846720 /* StructuredOrInstantiable */ || target.flags & 66846720 /* StructuredOrInstantiable */)) { + if (result = recursiveTypeRelatedTo(source, target, reportErrors, intersectionState)) { + resetErrorInfo(saveErrorInfo); + } + } + } + if (!result && source.flags & (2097152 /* Intersection */ | 262144 /* TypeParameter */)) { + // The combined constraint of an intersection type is the intersection of the constraints of + // the constituents. When an intersection type contains instantiable types with union type + // constraints, there are situations where we need to examine the combined constraint. One is + // when the target is a union type. Another is when the intersection contains types belonging + // to one of the disjoint domains. For example, given type variables T and U, each with the + // constraint 'string | number', the combined constraint of 'T & U' is 'string | number' and + // we need to check this constraint against a union on the target side. Also, given a type + // variable V constrained to 'string | number', 'V & number' has a combined constraint of + // 'string & number | number & number' which reduces to just 'number'. + // This also handles type parameters, as a type parameter with a union constraint compared against a union + // needs to have its constraint hoisted into an intersection with said type parameter, this way + // the type param can be compared with itself in the target (with the influence of its constraint to match other parts) + // For example, if `T extends 1 | 2` and `U extends 2 | 3` and we compare `T & U` to `T & U & (1 | 2 | 3)` + var constraint = getEffectiveConstraintOfIntersection(source.flags & 2097152 /* Intersection */ ? source.types : [source], !!(target.flags & 1048576 /* Union */)); + if (constraint && (source.flags & 2097152 /* Intersection */ || target.flags & 1048576 /* Union */)) { + if (everyType(constraint, function (c) { return c !== source; })) { // Skip comparison if expansion contains the source itself + // TODO: Stack errors so we get a pyramid for the "normal" comparison above, _and_ a second for this + if (result = isRelatedTo(constraint, target, /*reportErrors*/ false, /*headMessage*/ undefined, intersectionState)) { + resetErrorInfo(saveErrorInfo); + } + } + } + } + // For certain combinations involving intersections and optional, excess, or mismatched properties we need + // an extra property check where the intersection is viewed as a single object. The following are motivating + // examples that all should be errors, but aren't without this extra property check: + // + // let obj: { a: { x: string } } & { c: number } = { a: { x: 'hello', y: 2 }, c: 5 }; // Nested excess property + // + // declare let wrong: { a: { y: string } }; + // let weak: { a?: { x?: number } } & { c?: string } = wrong; // Nested weak object type + // + // function foo(x: { a?: string }, y: T & { a: boolean }) { + // x = y; // Mismatched property in source intersection + // } + // + // We suppress recursive intersection property checks because they can generate lots of work when relating + // recursive intersections that are structurally similar but not exactly identical. See #37854. + if (result && !inPropertyCheck && (target.flags & 2097152 /* Intersection */ && (isPerformingExcessPropertyChecks || isPerformingCommonPropertyChecks) || + isNonGenericObjectType(target) && !isArrayType(target) && !isTupleType(target) && source.flags & 2097152 /* Intersection */ && getApparentType(source).flags & 3670016 /* StructuredType */ && !ts.some(source.types, function (t) { return !!(ts.getObjectFlags(t) & 2097152 /* NonInferrableType */); }))) { + inPropertyCheck = true; + result &= recursiveTypeRelatedTo(source, target, reportErrors, 4 /* PropertyCheck */); + inPropertyCheck = false; + } + reportErrorResults(source, target, result, isComparingJsxAttributes); + return result; + function reportErrorResults(source, target, result, isComparingJsxAttributes) { + if (!result && reportErrors) { + source = originalSource.aliasSymbol ? originalSource : source; + target = originalTarget.aliasSymbol ? originalTarget : target; + var maybeSuppress = overrideNextErrorInfo > 0; + if (maybeSuppress) { + overrideNextErrorInfo--; + } + if (source.flags & 524288 /* Object */ && target.flags & 524288 /* Object */) { + var currentError = errorInfo; + tryElaborateArrayLikeErrors(source, target, reportErrors); + if (errorInfo !== currentError) { + maybeSuppress = !!errorInfo; + } + } + if (source.flags & 524288 /* Object */ && target.flags & 131068 /* Primitive */) { + tryElaborateErrorsForPrimitivesAndObjects(source, target); + } + else if (source.symbol && source.flags & 524288 /* Object */ && globalObjectType === source) { + reportError(ts.Diagnostics.The_Object_type_is_assignable_to_very_few_other_types_Did_you_mean_to_use_the_any_type_instead); + } + else if (isComparingJsxAttributes && target.flags & 2097152 /* Intersection */) { + var targetTypes = target.types; + var intrinsicAttributes = getJsxType(JsxNames.IntrinsicAttributes, errorNode); + var intrinsicClassAttributes = getJsxType(JsxNames.IntrinsicClassAttributes, errorNode); + if (intrinsicAttributes !== errorType && intrinsicClassAttributes !== errorType && + (ts.contains(targetTypes, intrinsicAttributes) || ts.contains(targetTypes, intrinsicClassAttributes))) { + // do not report top error + return result; + } + } + else { + errorInfo = elaborateNeverIntersection(errorInfo, originalTarget); + } + if (!headMessage && maybeSuppress) { + lastSkippedInfo = [source, target]; + // Used by, eg, missing property checking to replace the top-level message with a more informative one + return result; + } + reportRelationError(headMessage, source, target); + } + } + } + function isIdenticalTo(source, target) { + var flags = source.flags & target.flags; + if (!(flags & 66584576 /* Substructure */)) { + return 0 /* False */; + } + if (flags & 3145728 /* UnionOrIntersection */) { + var result_5 = eachTypeRelatedToSomeType(source, target); + if (result_5) { + result_5 &= eachTypeRelatedToSomeType(target, source); + } + return result_5; + } + return recursiveTypeRelatedTo(source, target, /*reportErrors*/ false, 0 /* None */); + } + function getTypeOfPropertyInTypes(types, name) { + var appendPropType = function (propTypes, type) { + type = getApparentType(type); + var prop = type.flags & 3145728 /* UnionOrIntersection */ ? getPropertyOfUnionOrIntersectionType(type, name) : getPropertyOfObjectType(type, name); + var propType = prop && getTypeOfSymbol(prop) || isNumericLiteralName(name) && getIndexTypeOfType(type, 1 /* Number */) || getIndexTypeOfType(type, 0 /* String */) || undefinedType; + return ts.append(propTypes, propType); + }; + return getUnionType(ts.reduceLeft(types, appendPropType, /*initial*/ undefined) || ts.emptyArray); + } + function hasExcessProperties(source, target, reportErrors) { + if (!isExcessPropertyCheckTarget(target) || !noImplicitAny && ts.getObjectFlags(target) & 16384 /* JSLiteral */) { + return false; // Disable excess property checks on JS literals to simulate having an implicit "index signature" - but only outside of noImplicitAny + } + var isComparingJsxAttributes = !!(ts.getObjectFlags(source) & 4096 /* JsxAttributes */); + if ((relation === assignableRelation || relation === comparableRelation) && + (isTypeSubsetOf(globalObjectType, target) || (!isComparingJsxAttributes && isEmptyObjectType(target)))) { + return false; + } + var reducedTarget = target; + var checkTypes; + if (target.flags & 1048576 /* Union */) { + reducedTarget = findMatchingDiscriminantType(source, target, isRelatedTo) || filterPrimitivesIfContainsNonPrimitive(target); + checkTypes = reducedTarget.flags & 1048576 /* Union */ ? reducedTarget.types : [reducedTarget]; + } + var _loop_13 = function (prop) { + if (shouldCheckAsExcessProperty(prop, source.symbol) && !isIgnoredJsxProperty(source, prop)) { + if (!isKnownProperty(reducedTarget, prop.escapedName, isComparingJsxAttributes)) { + if (reportErrors) { + // Report error in terms of object types in the target as those are the only ones + // we check in isKnownProperty. + var errorTarget = filterType(reducedTarget, isExcessPropertyCheckTarget); + // We know *exactly* where things went wrong when comparing the types. + // Use this property as the error node as this will be more helpful in + // reasoning about what went wrong. + if (!errorNode) + return { value: ts.Debug.fail() }; + if (ts.isJsxAttributes(errorNode) || ts.isJsxOpeningLikeElement(errorNode) || ts.isJsxOpeningLikeElement(errorNode.parent)) { + // JsxAttributes has an object-literal flag and undergo same type-assignablity check as normal object-literal. + // However, using an object-literal error message will be very confusing to the users so we give different a message. + // TODO: Spelling suggestions for excess jsx attributes (needs new diagnostic messages) + if (prop.valueDeclaration && ts.isJsxAttribute(prop.valueDeclaration) && ts.getSourceFileOfNode(errorNode) === ts.getSourceFileOfNode(prop.valueDeclaration.name)) { + // Note that extraneous children (as in `extra`) don't pass this check, + // since `children` is a SyntaxKind.PropertySignature instead of a SyntaxKind.JsxAttribute. + errorNode = prop.valueDeclaration.name; + } + reportError(ts.Diagnostics.Property_0_does_not_exist_on_type_1, symbolToString(prop), typeToString(errorTarget)); + } + else { + // use the property's value declaration if the property is assigned inside the literal itself + var objectLiteralDeclaration_1 = source.symbol && ts.firstOrUndefined(source.symbol.declarations); + var suggestion = void 0; + if (prop.valueDeclaration && ts.findAncestor(prop.valueDeclaration, function (d) { return d === objectLiteralDeclaration_1; }) && ts.getSourceFileOfNode(objectLiteralDeclaration_1) === ts.getSourceFileOfNode(errorNode)) { + var propDeclaration = prop.valueDeclaration; + ts.Debug.assertNode(propDeclaration, ts.isObjectLiteralElementLike); + errorNode = propDeclaration; + var name = propDeclaration.name; + if (ts.isIdentifier(name)) { + suggestion = getSuggestionForNonexistentProperty(name, errorTarget); + } + } + if (suggestion !== undefined) { + reportError(ts.Diagnostics.Object_literal_may_only_specify_known_properties_but_0_does_not_exist_in_type_1_Did_you_mean_to_write_2, symbolToString(prop), typeToString(errorTarget), suggestion); + } + else { + reportError(ts.Diagnostics.Object_literal_may_only_specify_known_properties_and_0_does_not_exist_in_type_1, symbolToString(prop), typeToString(errorTarget)); + } + } + } + return { value: true }; + } + if (checkTypes && !isRelatedTo(getTypeOfSymbol(prop), getTypeOfPropertyInTypes(checkTypes, prop.escapedName), reportErrors)) { + if (reportErrors) { + reportIncompatibleError(ts.Diagnostics.Types_of_property_0_are_incompatible, symbolToString(prop)); + } + return { value: true }; + } + } + }; + for (var _i = 0, _a = getPropertiesOfType(source); _i < _a.length; _i++) { + var prop = _a[_i]; + var state_5 = _loop_13(prop); + if (typeof state_5 === "object") + return state_5.value; + } + return false; + } + function shouldCheckAsExcessProperty(prop, container) { + return prop.valueDeclaration && container.valueDeclaration && prop.valueDeclaration.parent === container.valueDeclaration; + } + function eachTypeRelatedToSomeType(source, target) { + var result = -1 /* True */; + var sourceTypes = source.types; + for (var _i = 0, sourceTypes_1 = sourceTypes; _i < sourceTypes_1.length; _i++) { + var sourceType = sourceTypes_1[_i]; + var related = typeRelatedToSomeType(sourceType, target, /*reportErrors*/ false); + if (!related) { + return 0 /* False */; + } + result &= related; + } + return result; + } + function typeRelatedToSomeType(source, target, reportErrors) { + var targetTypes = target.types; + if (target.flags & 1048576 /* Union */ && containsType(targetTypes, source)) { + return -1 /* True */; + } + for (var _i = 0, targetTypes_1 = targetTypes; _i < targetTypes_1.length; _i++) { + var type = targetTypes_1[_i]; + var related = isRelatedTo(source, type, /*reportErrors*/ false); + if (related) { + return related; + } + } + if (reportErrors) { + var bestMatchingType = getBestMatchingType(source, target, isRelatedTo); + isRelatedTo(source, bestMatchingType || targetTypes[targetTypes.length - 1], /*reportErrors*/ true); + } + return 0 /* False */; + } + function typeRelatedToEachType(source, target, reportErrors, intersectionState) { + var result = -1 /* True */; + var targetTypes = target.types; + for (var _i = 0, targetTypes_2 = targetTypes; _i < targetTypes_2.length; _i++) { + var targetType = targetTypes_2[_i]; + var related = isRelatedTo(source, targetType, reportErrors, /*headMessage*/ undefined, intersectionState); + if (!related) { + return 0 /* False */; + } + result &= related; + } + return result; + } + function someTypeRelatedToType(source, target, reportErrors, intersectionState) { + var sourceTypes = source.types; + if (source.flags & 1048576 /* Union */ && containsType(sourceTypes, target)) { + return -1 /* True */; + } + var len = sourceTypes.length; + for (var i = 0; i < len; i++) { + var related = isRelatedTo(sourceTypes[i], target, reportErrors && i === len - 1, /*headMessage*/ undefined, intersectionState); + if (related) { + return related; + } + } + return 0 /* False */; + } + function eachTypeRelatedToType(source, target, reportErrors, intersectionState) { + var result = -1 /* True */; + var sourceTypes = source.types; + for (var i = 0; i < sourceTypes.length; i++) { + var sourceType = sourceTypes[i]; + if (target.flags & 1048576 /* Union */ && target.types.length === sourceTypes.length) { + // many unions are mappings of one another; in such cases, simply comparing members at the same index can shortcut the comparison + var related_1 = isRelatedTo(sourceType, target.types[i], /*reportErrors*/ false, /*headMessage*/ undefined, intersectionState); + if (related_1) { + result &= related_1; + continue; + } + } + var related = isRelatedTo(sourceType, target, reportErrors, /*headMessage*/ undefined, intersectionState); + if (!related) { + return 0 /* False */; + } + result &= related; + } + return result; + } + function typeArgumentsRelatedTo(sources, targets, variances, reportErrors, intersectionState) { + if (sources === void 0) { sources = ts.emptyArray; } + if (targets === void 0) { targets = ts.emptyArray; } + if (variances === void 0) { variances = ts.emptyArray; } + if (sources.length !== targets.length && relation === identityRelation) { + return 0 /* False */; + } + var length = sources.length <= targets.length ? sources.length : targets.length; + var result = -1 /* True */; + for (var i = 0; i < length; i++) { + // When variance information isn't available we default to covariance. This happens + // in the process of computing variance information for recursive types and when + // comparing 'this' type arguments. + var varianceFlags = i < variances.length ? variances[i] : 1 /* Covariant */; + var variance = varianceFlags & 7 /* VarianceMask */; + // We ignore arguments for independent type parameters (because they're never witnessed). + if (variance !== 4 /* Independent */) { + var s = sources[i]; + var t = targets[i]; + var related = -1 /* True */; + if (varianceFlags & 8 /* Unmeasurable */) { + // Even an `Unmeasurable` variance works out without a structural check if the source and target are _identical_. + // We can't simply assume invariance, because `Unmeasurable` marks nonlinear relations, for example, a relation tained by + // the `-?` modifier in a mapped type (where, no matter how the inputs are related, the outputs still might not be) + related = relation === identityRelation ? isRelatedTo(s, t, /*reportErrors*/ false) : compareTypesIdentical(s, t); + } + else if (variance === 1 /* Covariant */) { + related = isRelatedTo(s, t, reportErrors, /*headMessage*/ undefined, intersectionState); + } + else if (variance === 2 /* Contravariant */) { + related = isRelatedTo(t, s, reportErrors, /*headMessage*/ undefined, intersectionState); + } + else if (variance === 3 /* Bivariant */) { + // In the bivariant case we first compare contravariantly without reporting + // errors. Then, if that doesn't succeed, we compare covariantly with error + // reporting. Thus, error elaboration will be based on the the covariant check, + // which is generally easier to reason about. + related = isRelatedTo(t, s, /*reportErrors*/ false); + if (!related) { + related = isRelatedTo(s, t, reportErrors, /*headMessage*/ undefined, intersectionState); + } + } + else { + // In the invariant case we first compare covariantly, and only when that + // succeeds do we proceed to compare contravariantly. Thus, error elaboration + // will typically be based on the covariant check. + related = isRelatedTo(s, t, reportErrors, /*headMessage*/ undefined, intersectionState); + if (related) { + related &= isRelatedTo(t, s, reportErrors, /*headMessage*/ undefined, intersectionState); + } + } + if (!related) { + return 0 /* False */; + } + result &= related; + } + } + return result; + } + // Determine if possibly recursive types are related. First, check if the result is already available in the global cache. + // Second, check if we have already started a comparison of the given two types in which case we assume the result to be true. + // Third, check if both types are part of deeply nested chains of generic type instantiations and if so assume the types are + // equal and infinitely expanding. Fourth, if we have reached a depth of 100 nested comparisons, assume we have runaway recursion + // and issue an error. Otherwise, actually compare the structure of the two types. + function recursiveTypeRelatedTo(source, target, reportErrors, intersectionState) { + if (overflow) { + return 0 /* False */; + } + var id = getRelationKey(source, target, intersectionState | (inPropertyCheck ? 8 /* InPropertyCheck */ : 0), relation); + var entry = relation.get(id); + if (entry !== undefined) { + if (reportErrors && entry & 2 /* Failed */ && !(entry & 4 /* Reported */)) { + // We are elaborating errors and the cached result is an unreported failure. The result will be reported + // as a failure, and should be updated as a reported failure by the bottom of this function. + } + else { + if (outofbandVarianceMarkerHandler) { + // We're in the middle of variance checking - integrate any unmeasurable/unreliable flags from this cached component + var saved = entry & 24 /* ReportsMask */; + if (saved & 8 /* ReportsUnmeasurable */) { + instantiateType(source, makeFunctionTypeMapper(reportUnmeasurableMarkers)); + } + if (saved & 16 /* ReportsUnreliable */) { + instantiateType(source, makeFunctionTypeMapper(reportUnreliableMarkers)); + } + } + return entry & 1 /* Succeeded */ ? -1 /* True */ : 0 /* False */; + } + } + if (!maybeKeys) { + maybeKeys = []; + sourceStack = []; + targetStack = []; + } + else { + for (var i = 0; i < maybeCount; i++) { + // If source and target are already being compared, consider them related with assumptions + if (id === maybeKeys[i]) { + return 1 /* Maybe */; + } + } + if (depth === 100) { + overflow = true; + return 0 /* False */; + } + } + var maybeStart = maybeCount; + maybeKeys[maybeCount] = id; + maybeCount++; + sourceStack[depth] = source; + targetStack[depth] = target; + depth++; + var saveExpandingFlags = expandingFlags; + if (!(expandingFlags & 1 /* Source */) && isDeeplyNestedType(source, sourceStack, depth)) + expandingFlags |= 1 /* Source */; + if (!(expandingFlags & 2 /* Target */) && isDeeplyNestedType(target, targetStack, depth)) + expandingFlags |= 2 /* Target */; + var originalHandler; + var propagatingVarianceFlags = 0; + if (outofbandVarianceMarkerHandler) { + originalHandler = outofbandVarianceMarkerHandler; + outofbandVarianceMarkerHandler = function (onlyUnreliable) { + propagatingVarianceFlags |= onlyUnreliable ? 16 /* ReportsUnreliable */ : 8 /* ReportsUnmeasurable */; + return originalHandler(onlyUnreliable); + }; + } + var result = expandingFlags !== 3 /* Both */ ? structuredTypeRelatedTo(source, target, reportErrors, intersectionState) : 1 /* Maybe */; + if (outofbandVarianceMarkerHandler) { + outofbandVarianceMarkerHandler = originalHandler; + } + expandingFlags = saveExpandingFlags; + depth--; + if (result) { + if (result === -1 /* True */ || depth === 0) { + // If result is definitely true, record all maybe keys as having succeeded + for (var i = maybeStart; i < maybeCount; i++) { + relation.set(maybeKeys[i], 1 /* Succeeded */ | propagatingVarianceFlags); + } + maybeCount = maybeStart; + } + } + else { + // A false result goes straight into global cache (when something is false under + // assumptions it will also be false without assumptions) + relation.set(id, (reportErrors ? 4 /* Reported */ : 0) | 2 /* Failed */ | propagatingVarianceFlags); + maybeCount = maybeStart; + } + return result; + } + function structuredTypeRelatedTo(source, target, reportErrors, intersectionState) { + if (intersectionState & 4 /* PropertyCheck */) { + return propertiesRelatedTo(source, target, reportErrors, /*excludedProperties*/ undefined, 0 /* None */); + } + var flags = source.flags & target.flags; + if (relation === identityRelation && !(flags & 524288 /* Object */)) { + if (flags & 4194304 /* Index */) { + return isRelatedTo(source.type, target.type, /*reportErrors*/ false); + } + var result_6 = 0 /* False */; + if (flags & 8388608 /* IndexedAccess */) { + if (result_6 = isRelatedTo(source.objectType, target.objectType, /*reportErrors*/ false)) { + if (result_6 &= isRelatedTo(source.indexType, target.indexType, /*reportErrors*/ false)) { + return result_6; + } + } + } + if (flags & 16777216 /* Conditional */) { + if (source.root.isDistributive === target.root.isDistributive) { + if (result_6 = isRelatedTo(source.checkType, target.checkType, /*reportErrors*/ false)) { + if (result_6 &= isRelatedTo(source.extendsType, target.extendsType, /*reportErrors*/ false)) { + if (result_6 &= isRelatedTo(getTrueTypeFromConditionalType(source), getTrueTypeFromConditionalType(target), /*reportErrors*/ false)) { + if (result_6 &= isRelatedTo(getFalseTypeFromConditionalType(source), getFalseTypeFromConditionalType(target), /*reportErrors*/ false)) { + return result_6; + } + } + } + } + } + } + if (flags & 33554432 /* Substitution */) { + return isRelatedTo(source.substitute, target.substitute, /*reportErrors*/ false); + } + return 0 /* False */; + } + var result; + var originalErrorInfo; + var varianceCheckFailed = false; + var saveErrorInfo = captureErrorCalculationState(); + // We limit alias variance probing to only object and conditional types since their alias behavior + // is more predictable than other, interned types, which may or may not have an alias depending on + // the order in which things were checked. + if (source.flags & (524288 /* Object */ | 16777216 /* Conditional */) && source.aliasSymbol && + source.aliasTypeArguments && source.aliasSymbol === target.aliasSymbol && + !(source.aliasTypeArgumentsContainsMarker || target.aliasTypeArgumentsContainsMarker)) { + var variances = getAliasVariances(source.aliasSymbol); + if (variances === ts.emptyArray) { + return 1 /* Maybe */; + } + var varianceResult = relateVariances(source.aliasTypeArguments, target.aliasTypeArguments, variances, intersectionState); + if (varianceResult !== undefined) { + return varianceResult; + } + } + if (target.flags & 262144 /* TypeParameter */) { + // A source type { [P in Q]: X } is related to a target type T if keyof T is related to Q and X is related to T[Q]. + if (ts.getObjectFlags(source) & 32 /* Mapped */ && isRelatedTo(getIndexType(target), getConstraintTypeFromMappedType(source))) { + if (!(getMappedTypeModifiers(source) & 4 /* IncludeOptional */)) { + var templateType = getTemplateTypeFromMappedType(source); + var indexedAccessType = getIndexedAccessType(target, getTypeParameterFromMappedType(source)); + if (result = isRelatedTo(templateType, indexedAccessType, reportErrors)) { + return result; + } + } + } + } + else if (target.flags & 4194304 /* Index */) { + // A keyof S is related to a keyof T if T is related to S. + if (source.flags & 4194304 /* Index */) { + if (result = isRelatedTo(target.type, source.type, /*reportErrors*/ false)) { + return result; + } + } + // A type S is assignable to keyof T if S is assignable to keyof C, where C is the + // simplified form of T or, if T doesn't simplify, the constraint of T. + var constraint = getSimplifiedTypeOrConstraint(target.type); + if (constraint) { + // We require Ternary.True here such that circular constraints don't cause + // false positives. For example, given 'T extends { [K in keyof T]: string }', + // 'keyof T' has itself as its constraint and produces a Ternary.Maybe when + // related to other types. + if (isRelatedTo(source, getIndexType(constraint, target.stringsOnly), reportErrors) === -1 /* True */) { + return -1 /* True */; + } + } + } + else if (target.flags & 8388608 /* IndexedAccess */) { + // A type S is related to a type T[K] if S is related to C, where C is the base + // constraint of T[K] for writing. + if (relation !== identityRelation) { + var objectType = target.objectType; + var indexType = target.indexType; + var baseObjectType = getBaseConstraintOfType(objectType) || objectType; + var baseIndexType = getBaseConstraintOfType(indexType) || indexType; + if (!isGenericObjectType(baseObjectType) && !isGenericIndexType(baseIndexType)) { + var accessFlags = 2 /* Writing */ | (baseObjectType !== objectType ? 1 /* NoIndexSignatures */ : 0); + var constraint = getIndexedAccessTypeOrUndefined(baseObjectType, baseIndexType, /*accessNode*/ undefined, accessFlags); + if (constraint && (result = isRelatedTo(source, constraint, reportErrors))) { + return result; + } + } + } + } + else if (isGenericMappedType(target)) { + // A source type T is related to a target type { [P in X]: T[P] } + var template = getTemplateTypeFromMappedType(target); + var modifiers = getMappedTypeModifiers(target); + if (!(modifiers & 8 /* ExcludeOptional */)) { + if (template.flags & 8388608 /* IndexedAccess */ && template.objectType === source && + template.indexType === getTypeParameterFromMappedType(target)) { + return -1 /* True */; + } + if (!isGenericMappedType(source)) { + var targetConstraint = getConstraintTypeFromMappedType(target); + var sourceKeys = getIndexType(source, /*stringsOnly*/ undefined, /*noIndexSignatures*/ true); + var includeOptional = modifiers & 4 /* IncludeOptional */; + var filteredByApplicability = includeOptional ? intersectTypes(targetConstraint, sourceKeys) : undefined; + // A source type T is related to a target type { [P in Q]: X } if Q is related to keyof T and T[Q] is related to X. + // A source type T is related to a target type { [P in Q]?: X } if some constituent Q' of Q is related to keyof T and T[Q'] is related to X. + if (includeOptional + ? !(filteredByApplicability.flags & 131072 /* Never */) + : isRelatedTo(targetConstraint, sourceKeys)) { + var typeParameter = getTypeParameterFromMappedType(target); + var indexingType = filteredByApplicability ? getIntersectionType([filteredByApplicability, typeParameter]) : typeParameter; + var indexedAccessType = getIndexedAccessType(source, indexingType); + var templateType = getTemplateTypeFromMappedType(target); + if (result = isRelatedTo(indexedAccessType, templateType, reportErrors)) { + return result; + } + } + originalErrorInfo = errorInfo; + resetErrorInfo(saveErrorInfo); + } + } + } + if (source.flags & 8650752 /* TypeVariable */) { + if (source.flags & 8388608 /* IndexedAccess */ && target.flags & 8388608 /* IndexedAccess */) { + // A type S[K] is related to a type T[J] if S is related to T and K is related to J. + if (result = isRelatedTo(source.objectType, target.objectType, reportErrors)) { + result &= isRelatedTo(source.indexType, target.indexType, reportErrors); + } + if (result) { + resetErrorInfo(saveErrorInfo); + return result; + } + } + else { + var constraint = getConstraintOfType(source); + if (!constraint || (source.flags & 262144 /* TypeParameter */ && constraint.flags & 1 /* Any */)) { + // A type variable with no constraint is not related to the non-primitive object type. + if (result = isRelatedTo(emptyObjectType, extractTypesOfKind(target, ~67108864 /* NonPrimitive */))) { + resetErrorInfo(saveErrorInfo); + return result; + } + } + // hi-speed no-this-instantiation check (less accurate, but avoids costly `this`-instantiation when the constraint will suffice), see #28231 for report on why this is needed + else if (result = isRelatedTo(constraint, target, /*reportErrors*/ false, /*headMessage*/ undefined, intersectionState)) { + resetErrorInfo(saveErrorInfo); + return result; + } + // slower, fuller, this-instantiated check (necessary when comparing raw `this` types from base classes), see `subclassWithPolymorphicThisIsAssignable.ts` test for example + else if (result = isRelatedTo(getTypeWithThisArgument(constraint, source), target, reportErrors, /*headMessage*/ undefined, intersectionState)) { + resetErrorInfo(saveErrorInfo); + return result; + } + } + } + else if (source.flags & 4194304 /* Index */) { + if (result = isRelatedTo(keyofConstraintType, target, reportErrors)) { + resetErrorInfo(saveErrorInfo); + return result; + } + } + else if (source.flags & 16777216 /* Conditional */) { + if (target.flags & 16777216 /* Conditional */) { + // Two conditional types 'T1 extends U1 ? X1 : Y1' and 'T2 extends U2 ? X2 : Y2' are related if + // one of T1 and T2 is related to the other, U1 and U2 are identical types, X1 is related to X2, + // and Y1 is related to Y2. + var sourceParams = source.root.inferTypeParameters; + var sourceExtends = source.extendsType; + var mapper = void 0; + if (sourceParams) { + // If the source has infer type parameters, we instantiate them in the context of the target + var ctx = createInferenceContext(sourceParams, /*signature*/ undefined, 0 /* None */, isRelatedTo); + inferTypes(ctx.inferences, target.extendsType, sourceExtends, 128 /* NoConstraints */ | 256 /* AlwaysStrict */); + sourceExtends = instantiateType(sourceExtends, ctx.mapper); + mapper = ctx.mapper; + } + if (isTypeIdenticalTo(sourceExtends, target.extendsType) && + (isRelatedTo(source.checkType, target.checkType) || isRelatedTo(target.checkType, source.checkType))) { + if (result = isRelatedTo(instantiateType(getTrueTypeFromConditionalType(source), mapper), getTrueTypeFromConditionalType(target), reportErrors)) { + result &= isRelatedTo(getFalseTypeFromConditionalType(source), getFalseTypeFromConditionalType(target), reportErrors); + } + if (result) { + resetErrorInfo(saveErrorInfo); + return result; + } + } + } + else { + // conditionals aren't related to one another via distributive constraint as it is much too inaccurate and allows way + // more assignments than are desirable (since it maps the source check type to its constraint, it loses information) + var distributiveConstraint = getConstraintOfDistributiveConditionalType(source); + if (distributiveConstraint) { + if (result = isRelatedTo(distributiveConstraint, target, reportErrors)) { + resetErrorInfo(saveErrorInfo); + return result; + } + } + } + // conditionals _can_ be related to one another via normal constraint, as, eg, `A extends B ? O : never` should be assignable to `O` + // when `O` is a conditional (`never` is trivially aissgnable to `O`, as is `O`!). + var defaultConstraint = getDefaultConstraintOfConditionalType(source); + if (defaultConstraint) { + if (result = isRelatedTo(defaultConstraint, target, reportErrors)) { + resetErrorInfo(saveErrorInfo); + return result; + } + } + } + else { + // An empty object type is related to any mapped type that includes a '?' modifier. + if (relation !== subtypeRelation && relation !== strictSubtypeRelation && isPartialMappedType(target) && isEmptyObjectType(source)) { + return -1 /* True */; + } + if (isGenericMappedType(target)) { + if (isGenericMappedType(source)) { + if (result = mappedTypeRelatedTo(source, target, reportErrors)) { + resetErrorInfo(saveErrorInfo); + return result; + } + } + return 0 /* False */; + } + var sourceIsPrimitive = !!(source.flags & 131068 /* Primitive */); + if (relation !== identityRelation) { + source = getApparentType(source); + } + else if (isGenericMappedType(source)) { + return 0 /* False */; + } + if (ts.getObjectFlags(source) & 4 /* Reference */ && ts.getObjectFlags(target) & 4 /* Reference */ && source.target === target.target && + !(ts.getObjectFlags(source) & 8192 /* MarkerType */ || ts.getObjectFlags(target) & 8192 /* MarkerType */)) { + // We have type references to the same generic type, and the type references are not marker + // type references (which are intended by be compared structurally). Obtain the variance + // information for the type parameters and relate the type arguments accordingly. + var variances = getVariances(source.target); + // We return Ternary.Maybe for a recursive invocation of getVariances (signalled by emptyArray). This + // effectively means we measure variance only from type parameter occurrences that aren't nested in + // recursive instantiations of the generic type. + if (variances === ts.emptyArray) { + return 1 /* Maybe */; + } + var varianceResult = relateVariances(getTypeArguments(source), getTypeArguments(target), variances, intersectionState); + if (varianceResult !== undefined) { + return varianceResult; + } + } + else if (isReadonlyArrayType(target) ? isArrayType(source) || isTupleType(source) : isArrayType(target) && isTupleType(source) && !source.target.readonly) { + if (relation !== identityRelation) { + return isRelatedTo(getIndexTypeOfType(source, 1 /* Number */) || anyType, getIndexTypeOfType(target, 1 /* Number */) || anyType, reportErrors); + } + else { + // By flags alone, we know that the `target` is a readonly array while the source is a normal array or tuple + // or `target` is an array and source is a tuple - in both cases the types cannot be identical, by construction + return 0 /* False */; + } + } + // Consider a fresh empty object literal type "closed" under the subtype relationship - this way `{} <- {[idx: string]: any} <- fresh({})` + // and not `{} <- fresh({}) <- {[idx: string]: any}` + else if ((relation === subtypeRelation || relation === strictSubtypeRelation) && isEmptyObjectType(target) && ts.getObjectFlags(target) & 32768 /* FreshLiteral */ && !isEmptyObjectType(source)) { + return 0 /* False */; + } + // Even if relationship doesn't hold for unions, intersections, or generic type references, + // it may hold in a structural comparison. + // In a check of the form X = A & B, we will have previously checked if A relates to X or B relates + // to X. Failing both of those we want to check if the aggregation of A and B's members structurally + // relates to X. Thus, we include intersection types on the source side here. + if (source.flags & (524288 /* Object */ | 2097152 /* Intersection */) && target.flags & 524288 /* Object */) { + // Report structural errors only if we haven't reported any errors yet + var reportStructuralErrors = reportErrors && errorInfo === saveErrorInfo.errorInfo && !sourceIsPrimitive; + result = propertiesRelatedTo(source, target, reportStructuralErrors, /*excludedProperties*/ undefined, intersectionState); + if (result) { + result &= signaturesRelatedTo(source, target, 0 /* Call */, reportStructuralErrors); + if (result) { + result &= signaturesRelatedTo(source, target, 1 /* Construct */, reportStructuralErrors); + if (result) { + result &= indexTypesRelatedTo(source, target, 0 /* String */, sourceIsPrimitive, reportStructuralErrors, intersectionState); + if (result) { + result &= indexTypesRelatedTo(source, target, 1 /* Number */, sourceIsPrimitive, reportStructuralErrors, intersectionState); + } + } + } + } + if (varianceCheckFailed && result) { + errorInfo = originalErrorInfo || errorInfo || saveErrorInfo.errorInfo; // Use variance error (there is no structural one) and return false + } + else if (result) { + return result; + } + } + // If S is an object type and T is a discriminated union, S may be related to T if + // there exists a constituent of T for every combination of the discriminants of S + // with respect to T. We do not report errors here, as we will use the existing + // error result from checking each constituent of the union. + if (source.flags & (524288 /* Object */ | 2097152 /* Intersection */) && target.flags & 1048576 /* Union */) { + var objectOnlyTarget = extractTypesOfKind(target, 524288 /* Object */ | 2097152 /* Intersection */ | 33554432 /* Substitution */); + if (objectOnlyTarget.flags & 1048576 /* Union */) { + var result_7 = typeRelatedToDiscriminatedType(source, objectOnlyTarget); + if (result_7) { + return result_7; + } + } + } + } + return 0 /* False */; + function relateVariances(sourceTypeArguments, targetTypeArguments, variances, intersectionState) { + if (result = typeArgumentsRelatedTo(sourceTypeArguments, targetTypeArguments, variances, reportErrors, intersectionState)) { + return result; + } + if (ts.some(variances, function (v) { return !!(v & 24 /* AllowsStructuralFallback */); })) { + // If some type parameter was `Unmeasurable` or `Unreliable`, and we couldn't pass by assuming it was identical, then we + // have to allow a structural fallback check + // We elide the variance-based error elaborations, since those might not be too helpful, since we'll potentially + // be assuming identity of the type parameter. + originalErrorInfo = undefined; + resetErrorInfo(saveErrorInfo); + return undefined; + } + var allowStructuralFallback = targetTypeArguments && hasCovariantVoidArgument(targetTypeArguments, variances); + varianceCheckFailed = !allowStructuralFallback; + // The type arguments did not relate appropriately, but it may be because we have no variance + // information (in which case typeArgumentsRelatedTo defaulted to covariance for all type + // arguments). It might also be the case that the target type has a 'void' type argument for + // a covariant type parameter that is only used in return positions within the generic type + // (in which case any type argument is permitted on the source side). In those cases we proceed + // with a structural comparison. Otherwise, we know for certain the instantiations aren't + // related and we can return here. + if (variances !== ts.emptyArray && !allowStructuralFallback) { + // In some cases generic types that are covariant in regular type checking mode become + // invariant in --strictFunctionTypes mode because one or more type parameters are used in + // both co- and contravariant positions. In order to make it easier to diagnose *why* such + // types are invariant, if any of the type parameters are invariant we reset the reported + // errors and instead force a structural comparison (which will include elaborations that + // reveal the reason). + // We can switch on `reportErrors` here, since varianceCheckFailed guarantees we return `False`, + // we can return `False` early here to skip calculating the structural error message we don't need. + if (varianceCheckFailed && !(reportErrors && ts.some(variances, function (v) { return (v & 7 /* VarianceMask */) === 0 /* Invariant */; }))) { + return 0 /* False */; + } + // We remember the original error information so we can restore it in case the structural + // comparison unexpectedly succeeds. This can happen when the structural comparison result + // is a Ternary.Maybe for example caused by the recursion depth limiter. + originalErrorInfo = errorInfo; + resetErrorInfo(saveErrorInfo); + } + } + } + function reportUnmeasurableMarkers(p) { + if (outofbandVarianceMarkerHandler && (p === markerSuperType || p === markerSubType || p === markerOtherType)) { + outofbandVarianceMarkerHandler(/*onlyUnreliable*/ false); + } + return p; + } + function reportUnreliableMarkers(p) { + if (outofbandVarianceMarkerHandler && (p === markerSuperType || p === markerSubType || p === markerOtherType)) { + outofbandVarianceMarkerHandler(/*onlyUnreliable*/ true); + } + return p; + } + // A type [P in S]: X is related to a type [Q in T]: Y if T is related to S and X' is + // related to Y, where X' is an instantiation of X in which P is replaced with Q. Notice + // that S and T are contra-variant whereas X and Y are co-variant. + function mappedTypeRelatedTo(source, target, reportErrors) { + var modifiersRelated = relation === comparableRelation || (relation === identityRelation ? getMappedTypeModifiers(source) === getMappedTypeModifiers(target) : + getCombinedMappedTypeOptionality(source) <= getCombinedMappedTypeOptionality(target)); + if (modifiersRelated) { + var result_8; + var targetConstraint = getConstraintTypeFromMappedType(target); + var sourceConstraint = instantiateType(getConstraintTypeFromMappedType(source), makeFunctionTypeMapper(getCombinedMappedTypeOptionality(source) < 0 ? reportUnmeasurableMarkers : reportUnreliableMarkers)); + if (result_8 = isRelatedTo(targetConstraint, sourceConstraint, reportErrors)) { + var mapper = createTypeMapper([getTypeParameterFromMappedType(source)], [getTypeParameterFromMappedType(target)]); + return result_8 & isRelatedTo(instantiateType(getTemplateTypeFromMappedType(source), mapper), getTemplateTypeFromMappedType(target), reportErrors); + } + } + return 0 /* False */; + } + function typeRelatedToDiscriminatedType(source, target) { + // 1. Generate the combinations of discriminant properties & types 'source' can satisfy. + // a. If the number of combinations is above a set limit, the comparison is too complex. + // 2. Filter 'target' to the subset of types whose discriminants exist in the matrix. + // a. If 'target' does not satisfy all discriminants in the matrix, 'source' is not related. + // 3. For each type in the filtered 'target', determine if all non-discriminant properties of + // 'target' are related to a property in 'source'. + // + // NOTE: See ~/tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithDiscriminatedUnion.ts + // for examples. + var sourceProperties = getPropertiesOfType(source); + var sourcePropertiesFiltered = findDiscriminantProperties(sourceProperties, target); + if (!sourcePropertiesFiltered) + return 0 /* False */; + // Though we could compute the number of combinations as we generate + // the matrix, this would incur additional memory overhead due to + // array allocations. To reduce this overhead, we first compute + // the number of combinations to ensure we will not surpass our + // fixed limit before incurring the cost of any allocations: + var numCombinations = 1; + for (var _i = 0, sourcePropertiesFiltered_1 = sourcePropertiesFiltered; _i < sourcePropertiesFiltered_1.length; _i++) { + var sourceProperty = sourcePropertiesFiltered_1[_i]; + numCombinations *= countTypes(getTypeOfSymbol(sourceProperty)); + if (numCombinations > 25) { + // We've reached the complexity limit. + return 0 /* False */; + } + } + // Compute the set of types for each discriminant property. + var sourceDiscriminantTypes = new Array(sourcePropertiesFiltered.length); + var excludedProperties = ts.createUnderscoreEscapedMap(); + for (var i = 0; i < sourcePropertiesFiltered.length; i++) { + var sourceProperty = sourcePropertiesFiltered[i]; + var sourcePropertyType = getTypeOfSymbol(sourceProperty); + sourceDiscriminantTypes[i] = sourcePropertyType.flags & 1048576 /* Union */ + ? sourcePropertyType.types + : [sourcePropertyType]; + excludedProperties.set(sourceProperty.escapedName, true); + } + // Match each combination of the cartesian product of discriminant properties to one or more + // constituents of 'target'. If any combination does not have a match then 'source' is not relatable. + var discriminantCombinations = ts.cartesianProduct(sourceDiscriminantTypes); + var matchingTypes = []; + var _loop_14 = function (combination) { + var hasMatch = false; + outer: for (var _i = 0, _a = target.types; _i < _a.length; _i++) { + var type = _a[_i]; + var _loop_15 = function (i) { + var sourceProperty = sourcePropertiesFiltered[i]; + var targetProperty = getPropertyOfType(type, sourceProperty.escapedName); + if (!targetProperty) + return "continue-outer"; + if (sourceProperty === targetProperty) + return "continue"; + // We compare the source property to the target in the context of a single discriminant type. + var related = propertyRelatedTo(source, target, sourceProperty, targetProperty, function (_) { return combination[i]; }, /*reportErrors*/ false, 0 /* None */, /*skipOptional*/ strictNullChecks || relation === comparableRelation); + // If the target property could not be found, or if the properties were not related, + // then this constituent is not a match. + if (!related) { + return "continue-outer"; + } + }; + for (var i = 0; i < sourcePropertiesFiltered.length; i++) { + var state_7 = _loop_15(i); + switch (state_7) { + case "continue-outer": continue outer; + } + } + ts.pushIfUnique(matchingTypes, type, ts.equateValues); + hasMatch = true; + } + if (!hasMatch) { + return { value: 0 /* False */ }; + } + }; + for (var _a = 0, discriminantCombinations_1 = discriminantCombinations; _a < discriminantCombinations_1.length; _a++) { + var combination = discriminantCombinations_1[_a]; + var state_6 = _loop_14(combination); + if (typeof state_6 === "object") + return state_6.value; + } + // Compare the remaining non-discriminant properties of each match. + var result = -1 /* True */; + for (var _b = 0, matchingTypes_1 = matchingTypes; _b < matchingTypes_1.length; _b++) { + var type = matchingTypes_1[_b]; + result &= propertiesRelatedTo(source, type, /*reportErrors*/ false, excludedProperties, 0 /* None */); + if (result) { + result &= signaturesRelatedTo(source, type, 0 /* Call */, /*reportStructuralErrors*/ false); + if (result) { + result &= signaturesRelatedTo(source, type, 1 /* Construct */, /*reportStructuralErrors*/ false); + if (result) { + result &= indexTypesRelatedTo(source, type, 0 /* String */, /*sourceIsPrimitive*/ false, /*reportStructuralErrors*/ false, 0 /* None */); + if (result) { + result &= indexTypesRelatedTo(source, type, 1 /* Number */, /*sourceIsPrimitive*/ false, /*reportStructuralErrors*/ false, 0 /* None */); + } + } + } + } + if (!result) { + return result; + } + } + return result; + } + function excludeProperties(properties, excludedProperties) { + if (!excludedProperties || properties.length === 0) + return properties; + var result; + for (var i = 0; i < properties.length; i++) { + if (!excludedProperties.has(properties[i].escapedName)) { + if (result) { + result.push(properties[i]); + } + } + else if (!result) { + result = properties.slice(0, i); + } + } + return result || properties; + } + function isPropertySymbolTypeRelated(sourceProp, targetProp, getTypeOfSourceProperty, reportErrors, intersectionState) { + var targetIsOptional = strictNullChecks && !!(ts.getCheckFlags(targetProp) & 48 /* Partial */); + var source = getTypeOfSourceProperty(sourceProp); + if (ts.getCheckFlags(targetProp) & 65536 /* DeferredType */ && !getSymbolLinks(targetProp).type) { + // Rather than resolving (and normalizing) the type, relate constituent-by-constituent without performing normalization or seconadary passes + var links = getSymbolLinks(targetProp); + ts.Debug.assertIsDefined(links.deferralParent); + ts.Debug.assertIsDefined(links.deferralConstituents); + var unionParent = !!(links.deferralParent.flags & 1048576 /* Union */); + var result_9 = unionParent ? 0 /* False */ : -1 /* True */; + var targetTypes = links.deferralConstituents; + for (var _i = 0, targetTypes_3 = targetTypes; _i < targetTypes_3.length; _i++) { + var targetType = targetTypes_3[_i]; + var related = isRelatedTo(source, targetType, /*reportErrors*/ false, /*headMessage*/ undefined, unionParent ? 0 : 2 /* Target */); + if (!unionParent) { + if (!related) { + // Can't assign to a target individually - have to fallback to assigning to the _whole_ intersection (which forces normalization) + return isRelatedTo(source, addOptionality(getTypeOfSymbol(targetProp), targetIsOptional), reportErrors); + } + result_9 &= related; + } + else { + if (related) { + return related; + } + } + } + if (unionParent && !result_9 && targetIsOptional) { + result_9 = isRelatedTo(source, undefinedType); + } + if (unionParent && !result_9 && reportErrors) { + // The easiest way to get the right errors here is to un-defer (which may be costly) + // If it turns out this is too costly too often, we can replicate the error handling logic within + // typeRelatedToSomeType without the discriminatable type branch (as that requires a manifest union + // type on which to hand discriminable properties, which we are expressly trying to avoid here) + return isRelatedTo(source, addOptionality(getTypeOfSymbol(targetProp), targetIsOptional), reportErrors); + } + return result_9; + } + else { + return isRelatedTo(source, addOptionality(getTypeOfSymbol(targetProp), targetIsOptional), reportErrors, /*headMessage*/ undefined, intersectionState); + } + } + function propertyRelatedTo(source, target, sourceProp, targetProp, getTypeOfSourceProperty, reportErrors, intersectionState, skipOptional) { + var sourcePropFlags = ts.getDeclarationModifierFlagsFromSymbol(sourceProp); + var targetPropFlags = ts.getDeclarationModifierFlagsFromSymbol(targetProp); + if (sourcePropFlags & 8 /* Private */ || targetPropFlags & 8 /* Private */) { + if (sourceProp.valueDeclaration !== targetProp.valueDeclaration) { + if (reportErrors) { + if (sourcePropFlags & 8 /* Private */ && targetPropFlags & 8 /* Private */) { + reportError(ts.Diagnostics.Types_have_separate_declarations_of_a_private_property_0, symbolToString(targetProp)); + } + else { + reportError(ts.Diagnostics.Property_0_is_private_in_type_1_but_not_in_type_2, symbolToString(targetProp), typeToString(sourcePropFlags & 8 /* Private */ ? source : target), typeToString(sourcePropFlags & 8 /* Private */ ? target : source)); + } + } + return 0 /* False */; + } + } + else if (targetPropFlags & 16 /* Protected */) { + if (!isValidOverrideOf(sourceProp, targetProp)) { + if (reportErrors) { + reportError(ts.Diagnostics.Property_0_is_protected_but_type_1_is_not_a_class_derived_from_2, symbolToString(targetProp), typeToString(getDeclaringClass(sourceProp) || source), typeToString(getDeclaringClass(targetProp) || target)); + } + return 0 /* False */; + } + } + else if (sourcePropFlags & 16 /* Protected */) { + if (reportErrors) { + reportError(ts.Diagnostics.Property_0_is_protected_in_type_1_but_public_in_type_2, symbolToString(targetProp), typeToString(source), typeToString(target)); + } + return 0 /* False */; + } + // If the target comes from a partial union prop, allow `undefined` in the target type + var related = isPropertySymbolTypeRelated(sourceProp, targetProp, getTypeOfSourceProperty, reportErrors, intersectionState); + if (!related) { + if (reportErrors) { + reportIncompatibleError(ts.Diagnostics.Types_of_property_0_are_incompatible, symbolToString(targetProp)); + } + return 0 /* False */; + } + // When checking for comparability, be more lenient with optional properties. + if (!skipOptional && sourceProp.flags & 16777216 /* Optional */ && !(targetProp.flags & 16777216 /* Optional */)) { + // TypeScript 1.0 spec (April 2014): 3.8.3 + // S is a subtype of a type T, and T is a supertype of S if ... + // S' and T are object types and, for each member M in T.. + // M is a property and S' contains a property N where + // if M is a required property, N is also a required property + // (M - property in T) + // (N - property in S) + if (reportErrors) { + reportError(ts.Diagnostics.Property_0_is_optional_in_type_1_but_required_in_type_2, symbolToString(targetProp), typeToString(source), typeToString(target)); + } + return 0 /* False */; + } + return related; + } + function reportUnmatchedProperty(source, target, unmatchedProperty, requireOptionalProperties) { + var shouldSkipElaboration = false; + // give specific error in case where private names have the same description + if (unmatchedProperty.valueDeclaration + && ts.isNamedDeclaration(unmatchedProperty.valueDeclaration) + && ts.isPrivateIdentifier(unmatchedProperty.valueDeclaration.name) + && source.symbol + && source.symbol.flags & 32 /* Class */) { + var privateIdentifierDescription = unmatchedProperty.valueDeclaration.name.escapedText; + var symbolTableKey = ts.getSymbolNameForPrivateIdentifier(source.symbol, privateIdentifierDescription); + if (symbolTableKey && getPropertyOfType(source, symbolTableKey)) { + var sourceName = ts.getDeclarationName(source.symbol.valueDeclaration); + var targetName = ts.getDeclarationName(target.symbol.valueDeclaration); + reportError(ts.Diagnostics.Property_0_in_type_1_refers_to_a_different_member_that_cannot_be_accessed_from_within_type_2, diagnosticName(privateIdentifierDescription), diagnosticName(sourceName.escapedText === "" ? anon : sourceName), diagnosticName(targetName.escapedText === "" ? anon : targetName)); + return; + } + } + var props = ts.arrayFrom(getUnmatchedProperties(source, target, requireOptionalProperties, /*matchDiscriminantProperties*/ false)); + if (!headMessage || (headMessage.code !== ts.Diagnostics.Class_0_incorrectly_implements_interface_1.code && + headMessage.code !== ts.Diagnostics.Class_0_incorrectly_implements_class_1_Did_you_mean_to_extend_1_and_inherit_its_members_as_a_subclass.code)) { + shouldSkipElaboration = true; // Retain top-level error for interface implementing issues, otherwise omit it + } + if (props.length === 1) { + var propName = symbolToString(unmatchedProperty); + reportError.apply(void 0, __spreadArrays([ts.Diagnostics.Property_0_is_missing_in_type_1_but_required_in_type_2, propName], getTypeNamesForErrorDisplay(source, target))); + if (ts.length(unmatchedProperty.declarations)) { + associateRelatedInfo(ts.createDiagnosticForNode(unmatchedProperty.declarations[0], ts.Diagnostics._0_is_declared_here, propName)); + } + if (shouldSkipElaboration && errorInfo) { + overrideNextErrorInfo++; + } + } + else if (tryElaborateArrayLikeErrors(source, target, /*reportErrors*/ false)) { + if (props.length > 5) { // arbitrary cutoff for too-long list form + reportError(ts.Diagnostics.Type_0_is_missing_the_following_properties_from_type_1_Colon_2_and_3_more, typeToString(source), typeToString(target), ts.map(props.slice(0, 4), function (p) { return symbolToString(p); }).join(", "), props.length - 4); + } + else { + reportError(ts.Diagnostics.Type_0_is_missing_the_following_properties_from_type_1_Colon_2, typeToString(source), typeToString(target), ts.map(props, function (p) { return symbolToString(p); }).join(", ")); + } + if (shouldSkipElaboration && errorInfo) { + overrideNextErrorInfo++; + } + } + // No array like or unmatched property error - just issue top level error (errorInfo = undefined) + } + function propertiesRelatedTo(source, target, reportErrors, excludedProperties, intersectionState) { + if (relation === identityRelation) { + return propertiesIdenticalTo(source, target, excludedProperties); + } + var requireOptionalProperties = (relation === subtypeRelation || relation === strictSubtypeRelation) && !isObjectLiteralType(source) && !isEmptyArrayLiteralType(source) && !isTupleType(source); + var unmatchedProperty = getUnmatchedProperty(source, target, requireOptionalProperties, /*matchDiscriminantProperties*/ false); + if (unmatchedProperty) { + if (reportErrors) { + reportUnmatchedProperty(source, target, unmatchedProperty, requireOptionalProperties); + } + return 0 /* False */; + } + if (isObjectLiteralType(target)) { + for (var _i = 0, _a = excludeProperties(getPropertiesOfType(source), excludedProperties); _i < _a.length; _i++) { + var sourceProp = _a[_i]; + if (!getPropertyOfObjectType(target, sourceProp.escapedName)) { + var sourceType = getTypeOfSymbol(sourceProp); + if (!(sourceType === undefinedType || sourceType === undefinedWideningType || sourceType === optionalType)) { + if (reportErrors) { + reportError(ts.Diagnostics.Property_0_does_not_exist_on_type_1, symbolToString(sourceProp), typeToString(target)); + } + return 0 /* False */; + } + } + } + } + var result = -1 /* True */; + if (isTupleType(target)) { + var targetRestType = getRestTypeOfTupleType(target); + if (targetRestType) { + if (!isTupleType(source)) { + return 0 /* False */; + } + var sourceRestType = getRestTypeOfTupleType(source); + if (sourceRestType && !isRelatedTo(sourceRestType, targetRestType, reportErrors)) { + if (reportErrors) { + reportError(ts.Diagnostics.Rest_signatures_are_incompatible); + } + return 0 /* False */; + } + var targetCount = getTypeReferenceArity(target) - 1; + var sourceCount = getTypeReferenceArity(source) - (sourceRestType ? 1 : 0); + var sourceTypeArguments = getTypeArguments(source); + for (var i = targetCount; i < sourceCount; i++) { + var related = isRelatedTo(sourceTypeArguments[i], targetRestType, reportErrors); + if (!related) { + if (reportErrors) { + reportError(ts.Diagnostics.Property_0_is_incompatible_with_rest_element_type, "" + i); + } + return 0 /* False */; + } + result &= related; + } + } + } + // We only call this for union target types when we're attempting to do excess property checking - in those cases, we want to get _all possible props_ + // from the target union, across all members + var properties = getPropertiesOfType(target); + var numericNamesOnly = isTupleType(source) && isTupleType(target); + for (var _b = 0, _c = excludeProperties(properties, excludedProperties); _b < _c.length; _b++) { + var targetProp = _c[_b]; + var name = targetProp.escapedName; + if (!(targetProp.flags & 4194304 /* Prototype */) && (!numericNamesOnly || isNumericLiteralName(name) || name === "length")) { + var sourceProp = getPropertyOfType(source, name); + if (sourceProp && sourceProp !== targetProp) { + var related = propertyRelatedTo(source, target, sourceProp, targetProp, getTypeOfSymbol, reportErrors, intersectionState, relation === comparableRelation); + if (!related) { + return 0 /* False */; + } + result &= related; + } + } + } + return result; + } + function propertiesIdenticalTo(source, target, excludedProperties) { + if (!(source.flags & 524288 /* Object */ && target.flags & 524288 /* Object */)) { + return 0 /* False */; + } + var sourceProperties = excludeProperties(getPropertiesOfObjectType(source), excludedProperties); + var targetProperties = excludeProperties(getPropertiesOfObjectType(target), excludedProperties); + if (sourceProperties.length !== targetProperties.length) { + return 0 /* False */; + } + var result = -1 /* True */; + for (var _i = 0, sourceProperties_1 = sourceProperties; _i < sourceProperties_1.length; _i++) { + var sourceProp = sourceProperties_1[_i]; + var targetProp = getPropertyOfObjectType(target, sourceProp.escapedName); + if (!targetProp) { + return 0 /* False */; + } + var related = compareProperties(sourceProp, targetProp, isRelatedTo); + if (!related) { + return 0 /* False */; + } + result &= related; + } + return result; + } + function signaturesRelatedTo(source, target, kind, reportErrors) { + if (relation === identityRelation) { + return signaturesIdenticalTo(source, target, kind); + } + if (target === anyFunctionType || source === anyFunctionType) { + return -1 /* True */; + } + var sourceIsJSConstructor = source.symbol && isJSConstructor(source.symbol.valueDeclaration); + var targetIsJSConstructor = target.symbol && isJSConstructor(target.symbol.valueDeclaration); + var sourceSignatures = getSignaturesOfType(source, (sourceIsJSConstructor && kind === 1 /* Construct */) ? + 0 /* Call */ : kind); + var targetSignatures = getSignaturesOfType(target, (targetIsJSConstructor && kind === 1 /* Construct */) ? + 0 /* Call */ : kind); + if (kind === 1 /* Construct */ && sourceSignatures.length && targetSignatures.length) { + if (ts.isAbstractConstructorType(source) && !ts.isAbstractConstructorType(target)) { + // An abstract constructor type is not assignable to a non-abstract constructor type + // as it would otherwise be possible to new an abstract class. Note that the assignability + // check we perform for an extends clause excludes construct signatures from the target, + // so this check never proceeds. + if (reportErrors) { + reportError(ts.Diagnostics.Cannot_assign_an_abstract_constructor_type_to_a_non_abstract_constructor_type); + } + return 0 /* False */; + } + if (!constructorVisibilitiesAreCompatible(sourceSignatures[0], targetSignatures[0], reportErrors)) { + return 0 /* False */; + } + } + var result = -1 /* True */; + var saveErrorInfo = captureErrorCalculationState(); + var incompatibleReporter = kind === 1 /* Construct */ ? reportIncompatibleConstructSignatureReturn : reportIncompatibleCallSignatureReturn; + if (ts.getObjectFlags(source) & 64 /* Instantiated */ && ts.getObjectFlags(target) & 64 /* Instantiated */ && source.symbol === target.symbol) { + // We have instantiations of the same anonymous type (which typically will be the type of a + // method). Simply do a pairwise comparison of the signatures in the two signature lists instead + // of the much more expensive N * M comparison matrix we explore below. We erase type parameters + // as they are known to always be the same. + for (var i = 0; i < targetSignatures.length; i++) { + var related = signatureRelatedTo(sourceSignatures[i], targetSignatures[i], /*erase*/ true, reportErrors, incompatibleReporter(sourceSignatures[i], targetSignatures[i])); + if (!related) { + return 0 /* False */; + } + result &= related; + } + } + else if (sourceSignatures.length === 1 && targetSignatures.length === 1) { + // For simple functions (functions with a single signature) we only erase type parameters for + // the comparable relation. Otherwise, if the source signature is generic, we instantiate it + // in the context of the target signature before checking the relationship. Ideally we'd do + // this regardless of the number of signatures, but the potential costs are prohibitive due + // to the quadratic nature of the logic below. + var eraseGenerics = relation === comparableRelation || !!compilerOptions.noStrictGenericChecks; + result = signatureRelatedTo(sourceSignatures[0], targetSignatures[0], eraseGenerics, reportErrors, incompatibleReporter(sourceSignatures[0], targetSignatures[0])); + } + else { + outer: for (var _i = 0, targetSignatures_1 = targetSignatures; _i < targetSignatures_1.length; _i++) { + var t = targetSignatures_1[_i]; + // Only elaborate errors from the first failure + var shouldElaborateErrors = reportErrors; + for (var _a = 0, sourceSignatures_1 = sourceSignatures; _a < sourceSignatures_1.length; _a++) { + var s = sourceSignatures_1[_a]; + var related = signatureRelatedTo(s, t, /*erase*/ true, shouldElaborateErrors, incompatibleReporter(s, t)); + if (related) { + result &= related; + resetErrorInfo(saveErrorInfo); + continue outer; + } + shouldElaborateErrors = false; + } + if (shouldElaborateErrors) { + reportError(ts.Diagnostics.Type_0_provides_no_match_for_the_signature_1, typeToString(source), signatureToString(t, /*enclosingDeclaration*/ undefined, /*flags*/ undefined, kind)); + } + return 0 /* False */; + } + } + return result; + } + function reportIncompatibleCallSignatureReturn(siga, sigb) { + if (siga.parameters.length === 0 && sigb.parameters.length === 0) { + return function (source, target) { return reportIncompatibleError(ts.Diagnostics.Call_signatures_with_no_arguments_have_incompatible_return_types_0_and_1, typeToString(source), typeToString(target)); }; + } + return function (source, target) { return reportIncompatibleError(ts.Diagnostics.Call_signature_return_types_0_and_1_are_incompatible, typeToString(source), typeToString(target)); }; + } + function reportIncompatibleConstructSignatureReturn(siga, sigb) { + if (siga.parameters.length === 0 && sigb.parameters.length === 0) { + return function (source, target) { return reportIncompatibleError(ts.Diagnostics.Construct_signatures_with_no_arguments_have_incompatible_return_types_0_and_1, typeToString(source), typeToString(target)); }; + } + return function (source, target) { return reportIncompatibleError(ts.Diagnostics.Construct_signature_return_types_0_and_1_are_incompatible, typeToString(source), typeToString(target)); }; + } + /** + * See signatureAssignableTo, compareSignaturesIdentical + */ + function signatureRelatedTo(source, target, erase, reportErrors, incompatibleReporter) { + return compareSignaturesRelated(erase ? getErasedSignature(source) : source, erase ? getErasedSignature(target) : target, relation === strictSubtypeRelation ? 8 /* StrictArity */ : 0, reportErrors, reportError, incompatibleReporter, isRelatedTo, makeFunctionTypeMapper(reportUnreliableMarkers)); + } + function signaturesIdenticalTo(source, target, kind) { + var sourceSignatures = getSignaturesOfType(source, kind); + var targetSignatures = getSignaturesOfType(target, kind); + if (sourceSignatures.length !== targetSignatures.length) { + return 0 /* False */; + } + var result = -1 /* True */; + for (var i = 0; i < sourceSignatures.length; i++) { + var related = compareSignaturesIdentical(sourceSignatures[i], targetSignatures[i], /*partialMatch*/ false, /*ignoreThisTypes*/ false, /*ignoreReturnTypes*/ false, isRelatedTo); + if (!related) { + return 0 /* False */; + } + result &= related; + } + return result; + } + function eachPropertyRelatedTo(source, target, kind, reportErrors) { + var result = -1 /* True */; + var props = source.flags & 2097152 /* Intersection */ ? getPropertiesOfUnionOrIntersectionType(source) : getPropertiesOfObjectType(source); + for (var _i = 0, props_2 = props; _i < props_2.length; _i++) { + var prop = props_2[_i]; + // Skip over ignored JSX and symbol-named members + if (isIgnoredJsxProperty(source, prop)) { + continue; + } + var nameType = getSymbolLinks(prop).nameType; + if (nameType && nameType.flags & 8192 /* UniqueESSymbol */) { + continue; + } + if (kind === 0 /* String */ || isNumericLiteralName(prop.escapedName)) { + var related = isRelatedTo(getTypeOfSymbol(prop), target, reportErrors); + if (!related) { + if (reportErrors) { + reportError(ts.Diagnostics.Property_0_is_incompatible_with_index_signature, symbolToString(prop)); + } + return 0 /* False */; + } + result &= related; + } + } + return result; + } + function indexTypeRelatedTo(sourceType, targetType, reportErrors) { + var related = isRelatedTo(sourceType, targetType, reportErrors); + if (!related && reportErrors) { + reportError(ts.Diagnostics.Index_signatures_are_incompatible); + } + return related; + } + function indexTypesRelatedTo(source, target, kind, sourceIsPrimitive, reportErrors, intersectionState) { + if (relation === identityRelation) { + return indexTypesIdenticalTo(source, target, kind); + } + var targetType = getIndexTypeOfType(target, kind); + if (!targetType || targetType.flags & 1 /* Any */ && !sourceIsPrimitive) { + // Index signature of type any permits assignment from everything but primitives + return -1 /* True */; + } + if (isGenericMappedType(source)) { + // A generic mapped type { [P in K]: T } is related to an index signature { [x: string]: U } + // if T is related to U. + return kind === 0 /* String */ ? isRelatedTo(getTemplateTypeFromMappedType(source), targetType, reportErrors) : 0 /* False */; + } + var indexType = getIndexTypeOfType(source, kind) || kind === 1 /* Number */ && getIndexTypeOfType(source, 0 /* String */); + if (indexType) { + return indexTypeRelatedTo(indexType, targetType, reportErrors); + } + if (!(intersectionState & 1 /* Source */) && isObjectTypeWithInferableIndex(source)) { + // Intersection constituents are never considered to have an inferred index signature + var related = eachPropertyRelatedTo(source, targetType, kind, reportErrors); + if (related && kind === 0 /* String */) { + var numberIndexType = getIndexTypeOfType(source, 1 /* Number */); + if (numberIndexType) { + related &= indexTypeRelatedTo(numberIndexType, targetType, reportErrors); + } + } + return related; + } + if (reportErrors) { + reportError(ts.Diagnostics.Index_signature_is_missing_in_type_0, typeToString(source)); + } + return 0 /* False */; + } + function indexTypesIdenticalTo(source, target, indexKind) { + var targetInfo = getIndexInfoOfType(target, indexKind); + var sourceInfo = getIndexInfoOfType(source, indexKind); + if (!sourceInfo && !targetInfo) { + return -1 /* True */; + } + if (sourceInfo && targetInfo && sourceInfo.isReadonly === targetInfo.isReadonly) { + return isRelatedTo(sourceInfo.type, targetInfo.type); + } + return 0 /* False */; + } + function constructorVisibilitiesAreCompatible(sourceSignature, targetSignature, reportErrors) { + if (!sourceSignature.declaration || !targetSignature.declaration) { + return true; + } + var sourceAccessibility = ts.getSelectedModifierFlags(sourceSignature.declaration, 24 /* NonPublicAccessibilityModifier */); + var targetAccessibility = ts.getSelectedModifierFlags(targetSignature.declaration, 24 /* NonPublicAccessibilityModifier */); + // A public, protected and private signature is assignable to a private signature. + if (targetAccessibility === 8 /* Private */) { + return true; + } + // A public and protected signature is assignable to a protected signature. + if (targetAccessibility === 16 /* Protected */ && sourceAccessibility !== 8 /* Private */) { + return true; + } + // Only a public signature is assignable to public signature. + if (targetAccessibility !== 16 /* Protected */ && !sourceAccessibility) { + return true; + } + if (reportErrors) { + reportError(ts.Diagnostics.Cannot_assign_a_0_constructor_type_to_a_1_constructor_type, visibilityToString(sourceAccessibility), visibilityToString(targetAccessibility)); + } + return false; + } + } + function getBestMatchingType(source, target, isRelatedTo) { + if (isRelatedTo === void 0) { isRelatedTo = compareTypesAssignable; } + return findMatchingDiscriminantType(source, target, isRelatedTo, /*skipPartial*/ true) || + findMatchingTypeReferenceOrTypeAliasReference(source, target) || + findBestTypeForObjectLiteral(source, target) || + findBestTypeForInvokable(source, target) || + findMostOverlappyType(source, target); + } + function discriminateTypeByDiscriminableItems(target, discriminators, related, defaultValue, skipPartial) { + // undefined=unknown, true=discriminated, false=not discriminated + // The state of each type progresses from left to right. Discriminated types stop at 'true'. + var discriminable = target.types.map(function (_) { return undefined; }); + for (var _i = 0, discriminators_1 = discriminators; _i < discriminators_1.length; _i++) { + var _a = discriminators_1[_i], getDiscriminatingType = _a[0], propertyName = _a[1]; + var targetProp = getUnionOrIntersectionProperty(target, propertyName); + if (skipPartial && targetProp && ts.getCheckFlags(targetProp) & 16 /* ReadPartial */) { + continue; + } + var i = 0; + for (var _b = 0, _c = target.types; _b < _c.length; _b++) { + var type = _c[_b]; + var targetType = getTypeOfPropertyOfType(type, propertyName); + if (targetType && related(getDiscriminatingType(), targetType)) { + discriminable[i] = discriminable[i] === undefined ? true : discriminable[i]; + } + else { + discriminable[i] = false; + } + i++; + } + } + var match = discriminable.indexOf(/*searchElement*/ true); + // make sure exactly 1 matches before returning it + return match === -1 || discriminable.indexOf(/*searchElement*/ true, match + 1) !== -1 ? defaultValue : target.types[match]; + } + /** + * A type is 'weak' if it is an object type with at least one optional property + * and no required properties, call/construct signatures or index signatures + */ + function isWeakType(type) { + if (type.flags & 524288 /* Object */) { + var resolved = resolveStructuredTypeMembers(type); + return resolved.callSignatures.length === 0 && resolved.constructSignatures.length === 0 && + !resolved.stringIndexInfo && !resolved.numberIndexInfo && + resolved.properties.length > 0 && + ts.every(resolved.properties, function (p) { return !!(p.flags & 16777216 /* Optional */); }); + } + if (type.flags & 2097152 /* Intersection */) { + return ts.every(type.types, isWeakType); + } + return false; + } + function hasCommonProperties(source, target, isComparingJsxAttributes) { + for (var _i = 0, _a = getPropertiesOfType(source); _i < _a.length; _i++) { + var prop = _a[_i]; + if (isKnownProperty(target, prop.escapedName, isComparingJsxAttributes)) { + return true; + } + } + return false; + } + // Return a type reference where the source type parameter is replaced with the target marker + // type, and flag the result as a marker type reference. + function getMarkerTypeReference(type, source, target) { + var result = createTypeReference(type, ts.map(type.typeParameters, function (t) { return t === source ? target : t; })); + result.objectFlags |= 8192 /* MarkerType */; + return result; + } + function getAliasVariances(symbol) { + var links = getSymbolLinks(symbol); + return getVariancesWorker(links.typeParameters, links, function (_links, param, marker) { + var type = getTypeAliasInstantiation(symbol, instantiateTypes(links.typeParameters, makeUnaryTypeMapper(param, marker))); + type.aliasTypeArgumentsContainsMarker = true; + return type; + }); + } + // Return an array containing the variance of each type parameter. The variance is effectively + // a digest of the type comparisons that occur for each type argument when instantiations of the + // generic type are structurally compared. We infer the variance information by comparing + // instantiations of the generic type for type arguments with known relations. The function + // returns the emptyArray singleton when invoked recursively for the given generic type. + function getVariancesWorker(typeParameters, cache, createMarkerType) { + if (typeParameters === void 0) { typeParameters = ts.emptyArray; } + var variances = cache.variances; + if (!variances) { + // The emptyArray singleton is used to signal a recursive invocation. + cache.variances = ts.emptyArray; + variances = []; + var _loop_16 = function (tp) { + var unmeasurable = false; + var unreliable = false; + var oldHandler = outofbandVarianceMarkerHandler; + outofbandVarianceMarkerHandler = function (onlyUnreliable) { return onlyUnreliable ? unreliable = true : unmeasurable = true; }; + // We first compare instantiations where the type parameter is replaced with + // marker types that have a known subtype relationship. From this we can infer + // invariance, covariance, contravariance or bivariance. + var typeWithSuper = createMarkerType(cache, tp, markerSuperType); + var typeWithSub = createMarkerType(cache, tp, markerSubType); + var variance = (isTypeAssignableTo(typeWithSub, typeWithSuper) ? 1 /* Covariant */ : 0) | + (isTypeAssignableTo(typeWithSuper, typeWithSub) ? 2 /* Contravariant */ : 0); + // If the instantiations appear to be related bivariantly it may be because the + // type parameter is independent (i.e. it isn't witnessed anywhere in the generic + // type). To determine this we compare instantiations where the type parameter is + // replaced with marker types that are known to be unrelated. + if (variance === 3 /* Bivariant */ && isTypeAssignableTo(createMarkerType(cache, tp, markerOtherType), typeWithSuper)) { + variance = 4 /* Independent */; + } + outofbandVarianceMarkerHandler = oldHandler; + if (unmeasurable || unreliable) { + if (unmeasurable) { + variance |= 8 /* Unmeasurable */; + } + if (unreliable) { + variance |= 16 /* Unreliable */; + } + } + variances.push(variance); + }; + for (var _i = 0, typeParameters_1 = typeParameters; _i < typeParameters_1.length; _i++) { + var tp = typeParameters_1[_i]; + _loop_16(tp); + } + cache.variances = variances; + } + return variances; + } + function getVariances(type) { + // Arrays and tuples are known to be covariant, no need to spend time computing this. + if (type === globalArrayType || type === globalReadonlyArrayType || type.objectFlags & 8 /* Tuple */) { + return arrayVariances; + } + return getVariancesWorker(type.typeParameters, type, getMarkerTypeReference); + } + // Return true if the given type reference has a 'void' type argument for a covariant type parameter. + // See comment at call in recursiveTypeRelatedTo for when this case matters. + function hasCovariantVoidArgument(typeArguments, variances) { + for (var i = 0; i < variances.length; i++) { + if ((variances[i] & 7 /* VarianceMask */) === 1 /* Covariant */ && typeArguments[i].flags & 16384 /* Void */) { + return true; + } + } + return false; + } + function isUnconstrainedTypeParameter(type) { + return type.flags & 262144 /* TypeParameter */ && !getConstraintOfTypeParameter(type); + } + function isNonDeferredTypeReference(type) { + return !!(ts.getObjectFlags(type) & 4 /* Reference */) && !type.node; + } + function isTypeReferenceWithGenericArguments(type) { + return isNonDeferredTypeReference(type) && ts.some(getTypeArguments(type), function (t) { return isUnconstrainedTypeParameter(t) || isTypeReferenceWithGenericArguments(t); }); + } + /** + * getTypeReferenceId(A) returns "111=0-12=1" + * where A.id=111 and number.id=12 + */ + function getTypeReferenceId(type, typeParameters, depth) { + if (depth === void 0) { depth = 0; } + var result = "" + type.target.id; + for (var _i = 0, _a = getTypeArguments(type); _i < _a.length; _i++) { + var t = _a[_i]; + if (isUnconstrainedTypeParameter(t)) { + var index = typeParameters.indexOf(t); + if (index < 0) { + index = typeParameters.length; + typeParameters.push(t); + } + result += "=" + index; + } + else if (depth < 4 && isTypeReferenceWithGenericArguments(t)) { + result += "<" + getTypeReferenceId(t, typeParameters, depth + 1) + ">"; + } + else { + result += "-" + t.id; + } + } + return result; + } + /** + * To improve caching, the relation key for two generic types uses the target's id plus ids of the type parameters. + * For other cases, the types ids are used. + */ + function getRelationKey(source, target, intersectionState, relation) { + if (relation === identityRelation && source.id > target.id) { + var temp = source; + source = target; + target = temp; + } + var postFix = intersectionState ? ":" + intersectionState : ""; + if (isTypeReferenceWithGenericArguments(source) && isTypeReferenceWithGenericArguments(target)) { + var typeParameters = []; + return getTypeReferenceId(source, typeParameters) + "," + getTypeReferenceId(target, typeParameters) + postFix; + } + return source.id + "," + target.id + postFix; + } + // Invoke the callback for each underlying property symbol of the given symbol and return the first + // value that isn't undefined. + function forEachProperty(prop, callback) { + if (ts.getCheckFlags(prop) & 6 /* Synthetic */) { + for (var _i = 0, _a = prop.containingType.types; _i < _a.length; _i++) { + var t = _a[_i]; + var p = getPropertyOfType(t, prop.escapedName); + var result = p && forEachProperty(p, callback); + if (result) { + return result; + } + } + return undefined; + } + return callback(prop); + } + // Return the declaring class type of a property or undefined if property not declared in class + function getDeclaringClass(prop) { + return prop.parent && prop.parent.flags & 32 /* Class */ ? getDeclaredTypeOfSymbol(getParentOfSymbol(prop)) : undefined; + } + // Return true if some underlying source property is declared in a class that derives + // from the given base class. + function isPropertyInClassDerivedFrom(prop, baseClass) { + return forEachProperty(prop, function (sp) { + var sourceClass = getDeclaringClass(sp); + return sourceClass ? hasBaseType(sourceClass, baseClass) : false; + }); + } + // Return true if source property is a valid override of protected parts of target property. + function isValidOverrideOf(sourceProp, targetProp) { + return !forEachProperty(targetProp, function (tp) { return ts.getDeclarationModifierFlagsFromSymbol(tp) & 16 /* Protected */ ? + !isPropertyInClassDerivedFrom(sourceProp, getDeclaringClass(tp)) : false; }); + } + // Return true if the given class derives from each of the declaring classes of the protected + // constituents of the given property. + function isClassDerivedFromDeclaringClasses(checkClass, prop) { + return forEachProperty(prop, function (p) { return ts.getDeclarationModifierFlagsFromSymbol(p) & 16 /* Protected */ ? + !hasBaseType(checkClass, getDeclaringClass(p)) : false; }) ? undefined : checkClass; + } + // Return true if the given type is deeply nested. We consider this to be the case when structural type comparisons + // for 5 or more occurrences or instantiations of the type have been recorded on the given stack. It is possible, + // though highly unlikely, for this test to be true in a situation where a chain of instantiations is not infinitely + // expanding. Effectively, we will generate a false positive when two types are structurally equal to at least 5 + // levels, but unequal at some level beyond that. + // In addition, this will also detect when an indexed access has been chained off of 5 or more times (which is essentially + // the dual of the structural comparison), and likewise mark the type as deeply nested, potentially adding false positives + // for finite but deeply expanding indexed accesses (eg, for `Q[P1][P2][P3][P4][P5]`). + function isDeeplyNestedType(type, stack, depth) { + // We track all object types that have an associated symbol (representing the origin of the type) + if (depth >= 5 && type.flags & 524288 /* Object */ && !isObjectOrArrayLiteralType(type)) { + var symbol = type.symbol; + if (symbol) { + var count = 0; + for (var i = 0; i < depth; i++) { + var t = stack[i]; + if (t.flags & 524288 /* Object */ && t.symbol === symbol) { + count++; + if (count >= 5) + return true; + } + } + } + } + if (depth >= 5 && type.flags & 8388608 /* IndexedAccess */) { + var root = getRootObjectTypeFromIndexedAccessChain(type); + var count = 0; + for (var i = 0; i < depth; i++) { + var t = stack[i]; + if (getRootObjectTypeFromIndexedAccessChain(t) === root) { + count++; + if (count >= 5) + return true; + } + } + } + return false; + } + /** + * Gets the leftmost object type in a chain of indexed accesses, eg, in A[P][Q], returns A + */ + function getRootObjectTypeFromIndexedAccessChain(type) { + var t = type; + while (t.flags & 8388608 /* IndexedAccess */) { + t = t.objectType; + } + return t; + } + function isPropertyIdenticalTo(sourceProp, targetProp) { + return compareProperties(sourceProp, targetProp, compareTypesIdentical) !== 0 /* False */; + } + function compareProperties(sourceProp, targetProp, compareTypes) { + // Two members are considered identical when + // - they are public properties with identical names, optionality, and types, + // - they are private or protected properties originating in the same declaration and having identical types + if (sourceProp === targetProp) { + return -1 /* True */; + } + var sourcePropAccessibility = ts.getDeclarationModifierFlagsFromSymbol(sourceProp) & 24 /* NonPublicAccessibilityModifier */; + var targetPropAccessibility = ts.getDeclarationModifierFlagsFromSymbol(targetProp) & 24 /* NonPublicAccessibilityModifier */; + if (sourcePropAccessibility !== targetPropAccessibility) { + return 0 /* False */; + } + if (sourcePropAccessibility) { + if (getTargetSymbol(sourceProp) !== getTargetSymbol(targetProp)) { + return 0 /* False */; + } + } + else { + if ((sourceProp.flags & 16777216 /* Optional */) !== (targetProp.flags & 16777216 /* Optional */)) { + return 0 /* False */; + } + } + if (isReadonlySymbol(sourceProp) !== isReadonlySymbol(targetProp)) { + return 0 /* False */; + } + return compareTypes(getTypeOfSymbol(sourceProp), getTypeOfSymbol(targetProp)); + } + function isMatchingSignature(source, target, partialMatch) { + var sourceParameterCount = getParameterCount(source); + var targetParameterCount = getParameterCount(target); + var sourceMinArgumentCount = getMinArgumentCount(source); + var targetMinArgumentCount = getMinArgumentCount(target); + var sourceHasRestParameter = hasEffectiveRestParameter(source); + var targetHasRestParameter = hasEffectiveRestParameter(target); + // A source signature matches a target signature if the two signatures have the same number of required, + // optional, and rest parameters. + if (sourceParameterCount === targetParameterCount && + sourceMinArgumentCount === targetMinArgumentCount && + sourceHasRestParameter === targetHasRestParameter) { + return true; + } + // A source signature partially matches a target signature if the target signature has no fewer required + // parameters + if (partialMatch && sourceMinArgumentCount <= targetMinArgumentCount) { + return true; + } + return false; + } + /** + * See signatureRelatedTo, compareSignaturesIdentical + */ + function compareSignaturesIdentical(source, target, partialMatch, ignoreThisTypes, ignoreReturnTypes, compareTypes) { + // TODO (drosen): De-duplicate code between related functions. + if (source === target) { + return -1 /* True */; + } + if (!(isMatchingSignature(source, target, partialMatch))) { + return 0 /* False */; + } + // Check that the two signatures have the same number of type parameters. + if (ts.length(source.typeParameters) !== ts.length(target.typeParameters)) { + return 0 /* False */; + } + // Check that type parameter constraints and defaults match. If they do, instantiate the source + // signature with the type parameters of the target signature and continue the comparison. + if (target.typeParameters) { + var mapper = createTypeMapper(source.typeParameters, target.typeParameters); + for (var i = 0; i < target.typeParameters.length; i++) { + var s = source.typeParameters[i]; + var t = target.typeParameters[i]; + if (!(s === t || compareTypes(instantiateType(getConstraintFromTypeParameter(s), mapper) || unknownType, getConstraintFromTypeParameter(t) || unknownType) && + compareTypes(instantiateType(getDefaultFromTypeParameter(s), mapper) || unknownType, getDefaultFromTypeParameter(t) || unknownType))) { + return 0 /* False */; + } + } + source = instantiateSignature(source, mapper, /*eraseTypeParameters*/ true); + } + var result = -1 /* True */; + if (!ignoreThisTypes) { + var sourceThisType = getThisTypeOfSignature(source); + if (sourceThisType) { + var targetThisType = getThisTypeOfSignature(target); + if (targetThisType) { + var related = compareTypes(sourceThisType, targetThisType); + if (!related) { + return 0 /* False */; + } + result &= related; + } + } + } + var targetLen = getParameterCount(target); + for (var i = 0; i < targetLen; i++) { + var s = getTypeAtPosition(source, i); + var t = getTypeAtPosition(target, i); + var related = compareTypes(t, s); + if (!related) { + return 0 /* False */; + } + result &= related; + } + if (!ignoreReturnTypes) { + var sourceTypePredicate = getTypePredicateOfSignature(source); + var targetTypePredicate = getTypePredicateOfSignature(target); + result &= sourceTypePredicate || targetTypePredicate ? + compareTypePredicatesIdentical(sourceTypePredicate, targetTypePredicate, compareTypes) : + compareTypes(getReturnTypeOfSignature(source), getReturnTypeOfSignature(target)); + } + return result; + } + function compareTypePredicatesIdentical(source, target, compareTypes) { + return !(source && target && typePredicateKindsMatch(source, target)) ? 0 /* False */ : + source.type === target.type ? -1 /* True */ : + source.type && target.type ? compareTypes(source.type, target.type) : + 0 /* False */; + } + function literalTypesWithSameBaseType(types) { + var commonBaseType; + for (var _i = 0, types_12 = types; _i < types_12.length; _i++) { + var t = types_12[_i]; + var baseType = getBaseTypeOfLiteralType(t); + if (!commonBaseType) { + commonBaseType = baseType; + } + if (baseType === t || baseType !== commonBaseType) { + return false; + } + } + return true; + } + // When the candidate types are all literal types with the same base type, return a union + // of those literal types. Otherwise, return the leftmost type for which no type to the + // right is a supertype. + function getSupertypeOrUnion(types) { + return literalTypesWithSameBaseType(types) ? + getUnionType(types) : + ts.reduceLeft(types, function (s, t) { return isTypeSubtypeOf(s, t) ? t : s; }); + } + function getCommonSupertype(types) { + if (!strictNullChecks) { + return getSupertypeOrUnion(types); + } + var primaryTypes = ts.filter(types, function (t) { return !(t.flags & 98304 /* Nullable */); }); + return primaryTypes.length ? + getNullableType(getSupertypeOrUnion(primaryTypes), getFalsyFlagsOfTypes(types) & 98304 /* Nullable */) : + getUnionType(types, 2 /* Subtype */); + } + // Return the leftmost type for which no type to the right is a subtype. + function getCommonSubtype(types) { + return ts.reduceLeft(types, function (s, t) { return isTypeSubtypeOf(t, s) ? t : s; }); + } + function isArrayType(type) { + return !!(ts.getObjectFlags(type) & 4 /* Reference */) && (type.target === globalArrayType || type.target === globalReadonlyArrayType); + } + function isReadonlyArrayType(type) { + return !!(ts.getObjectFlags(type) & 4 /* Reference */) && type.target === globalReadonlyArrayType; + } + function isMutableArrayOrTuple(type) { + return isArrayType(type) && !isReadonlyArrayType(type) || isTupleType(type) && !type.target.readonly; + } + function getElementTypeOfArrayType(type) { + return isArrayType(type) ? getTypeArguments(type)[0] : undefined; + } + function isArrayLikeType(type) { + // A type is array-like if it is a reference to the global Array or global ReadonlyArray type, + // or if it is not the undefined or null type and if it is assignable to ReadonlyArray + return isArrayType(type) || !(type.flags & 98304 /* Nullable */) && isTypeAssignableTo(type, anyReadonlyArrayType); + } + function isEmptyArrayLiteralType(type) { + var elementType = isArrayType(type) ? getTypeArguments(type)[0] : undefined; + return elementType === undefinedWideningType || elementType === implicitNeverType; + } + function isTupleLikeType(type) { + return isTupleType(type) || !!getPropertyOfType(type, "0"); + } + function isArrayOrTupleLikeType(type) { + return isArrayLikeType(type) || isTupleLikeType(type); + } + function getTupleElementType(type, index) { + var propType = getTypeOfPropertyOfType(type, "" + index); + if (propType) { + return propType; + } + if (everyType(type, isTupleType)) { + return mapType(type, function (t) { return getRestTypeOfTupleType(t) || undefinedType; }); + } + return undefined; + } + function isNeitherUnitTypeNorNever(type) { + return !(type.flags & (109440 /* Unit */ | 131072 /* Never */)); + } + function isUnitType(type) { + return !!(type.flags & 109440 /* Unit */); + } + function isLiteralType(type) { + return type.flags & 16 /* Boolean */ ? true : + type.flags & 1048576 /* Union */ ? type.flags & 1024 /* EnumLiteral */ ? true : ts.every(type.types, isUnitType) : + isUnitType(type); + } + function getBaseTypeOfLiteralType(type) { + return type.flags & 1024 /* EnumLiteral */ ? getBaseTypeOfEnumLiteralType(type) : + type.flags & 128 /* StringLiteral */ ? stringType : + type.flags & 256 /* NumberLiteral */ ? numberType : + type.flags & 2048 /* BigIntLiteral */ ? bigintType : + type.flags & 512 /* BooleanLiteral */ ? booleanType : + type.flags & 1048576 /* Union */ ? getUnionType(ts.sameMap(type.types, getBaseTypeOfLiteralType)) : + type; + } + function getWidenedLiteralType(type) { + return type.flags & 1024 /* EnumLiteral */ && isFreshLiteralType(type) ? getBaseTypeOfEnumLiteralType(type) : + type.flags & 128 /* StringLiteral */ && isFreshLiteralType(type) ? stringType : + type.flags & 256 /* NumberLiteral */ && isFreshLiteralType(type) ? numberType : + type.flags & 2048 /* BigIntLiteral */ && isFreshLiteralType(type) ? bigintType : + type.flags & 512 /* BooleanLiteral */ && isFreshLiteralType(type) ? booleanType : + type.flags & 1048576 /* Union */ ? getUnionType(ts.sameMap(type.types, getWidenedLiteralType)) : + type; + } + function getWidenedUniqueESSymbolType(type) { + return type.flags & 8192 /* UniqueESSymbol */ ? esSymbolType : + type.flags & 1048576 /* Union */ ? getUnionType(ts.sameMap(type.types, getWidenedUniqueESSymbolType)) : + type; + } + function getWidenedLiteralLikeTypeForContextualType(type, contextualType) { + if (!isLiteralOfContextualType(type, contextualType)) { + type = getWidenedUniqueESSymbolType(getWidenedLiteralType(type)); + } + return type; + } + function getWidenedLiteralLikeTypeForContextualReturnTypeIfNeeded(type, contextualSignatureReturnType, isAsync) { + if (type && isUnitType(type)) { + var contextualType = !contextualSignatureReturnType ? undefined : + isAsync ? getPromisedTypeOfPromise(contextualSignatureReturnType) : + contextualSignatureReturnType; + type = getWidenedLiteralLikeTypeForContextualType(type, contextualType); + } + return type; + } + function getWidenedLiteralLikeTypeForContextualIterationTypeIfNeeded(type, contextualSignatureReturnType, kind, isAsyncGenerator) { + if (type && isUnitType(type)) { + var contextualType = !contextualSignatureReturnType ? undefined : + getIterationTypeOfGeneratorFunctionReturnType(kind, contextualSignatureReturnType, isAsyncGenerator); + type = getWidenedLiteralLikeTypeForContextualType(type, contextualType); + } + return type; + } + /** + * Check if a Type was written as a tuple type literal. + * Prefer using isTupleLikeType() unless the use of `elementTypes`/`getTypeArguments` is required. + */ + function isTupleType(type) { + return !!(ts.getObjectFlags(type) & 4 /* Reference */ && type.target.objectFlags & 8 /* Tuple */); + } + function getRestTypeOfTupleType(type) { + return type.target.hasRestElement ? getTypeArguments(type)[type.target.typeParameters.length - 1] : undefined; + } + function getRestArrayTypeOfTupleType(type) { + var restType = getRestTypeOfTupleType(type); + return restType && createArrayType(restType); + } + function getLengthOfTupleType(type) { + return getTypeReferenceArity(type) - (type.target.hasRestElement ? 1 : 0); + } + function isZeroBigInt(_a) { + var value = _a.value; + return value.base10Value === "0"; + } + function getFalsyFlagsOfTypes(types) { + var result = 0; + for (var _i = 0, types_13 = types; _i < types_13.length; _i++) { + var t = types_13[_i]; + result |= getFalsyFlags(t); + } + return result; + } + // Returns the String, Number, Boolean, StringLiteral, NumberLiteral, BooleanLiteral, Void, Undefined, or Null + // flags for the string, number, boolean, "", 0, false, void, undefined, or null types respectively. Returns + // no flags for all other types (including non-falsy literal types). + function getFalsyFlags(type) { + return type.flags & 1048576 /* Union */ ? getFalsyFlagsOfTypes(type.types) : + type.flags & 128 /* StringLiteral */ ? type.value === "" ? 128 /* StringLiteral */ : 0 : + type.flags & 256 /* NumberLiteral */ ? type.value === 0 ? 256 /* NumberLiteral */ : 0 : + type.flags & 2048 /* BigIntLiteral */ ? isZeroBigInt(type) ? 2048 /* BigIntLiteral */ : 0 : + type.flags & 512 /* BooleanLiteral */ ? (type === falseType || type === regularFalseType) ? 512 /* BooleanLiteral */ : 0 : + type.flags & 117724 /* PossiblyFalsy */; + } + function removeDefinitelyFalsyTypes(type) { + return getFalsyFlags(type) & 117632 /* DefinitelyFalsy */ ? + filterType(type, function (t) { return !(getFalsyFlags(t) & 117632 /* DefinitelyFalsy */); }) : + type; + } + function extractDefinitelyFalsyTypes(type) { + return mapType(type, getDefinitelyFalsyPartOfType); + } + function getDefinitelyFalsyPartOfType(type) { + return type.flags & 4 /* String */ ? emptyStringType : + type.flags & 8 /* Number */ ? zeroType : + type.flags & 64 /* BigInt */ ? zeroBigIntType : + type === regularFalseType || + type === falseType || + type.flags & (16384 /* Void */ | 32768 /* Undefined */ | 65536 /* Null */) || + type.flags & 128 /* StringLiteral */ && type.value === "" || + type.flags & 256 /* NumberLiteral */ && type.value === 0 || + type.flags & 2048 /* BigIntLiteral */ && isZeroBigInt(type) ? type : + neverType; + } + /** + * Add undefined or null or both to a type if they are missing. + * @param type - type to add undefined and/or null to if not present + * @param flags - Either TypeFlags.Undefined or TypeFlags.Null, or both + */ + function getNullableType(type, flags) { + var missing = (flags & ~type.flags) & (32768 /* Undefined */ | 65536 /* Null */); + return missing === 0 ? type : + missing === 32768 /* Undefined */ ? getUnionType([type, undefinedType]) : + missing === 65536 /* Null */ ? getUnionType([type, nullType]) : + getUnionType([type, undefinedType, nullType]); + } + function getOptionalType(type) { + ts.Debug.assert(strictNullChecks); + return type.flags & 32768 /* Undefined */ ? type : getUnionType([type, undefinedType]); + } + function getGlobalNonNullableTypeInstantiation(type) { + if (!deferredGlobalNonNullableTypeAlias) { + deferredGlobalNonNullableTypeAlias = getGlobalSymbol("NonNullable", 524288 /* TypeAlias */, /*diagnostic*/ undefined) || unknownSymbol; + } + // Use NonNullable global type alias if available to improve quick info/declaration emit + if (deferredGlobalNonNullableTypeAlias !== unknownSymbol) { + return getTypeAliasInstantiation(deferredGlobalNonNullableTypeAlias, [type]); + } + return getTypeWithFacts(type, 2097152 /* NEUndefinedOrNull */); // Type alias unavailable, fall back to non-higher-order behavior + } + function getNonNullableType(type) { + return strictNullChecks ? getGlobalNonNullableTypeInstantiation(type) : type; + } + function addOptionalTypeMarker(type) { + return strictNullChecks ? getUnionType([type, optionalType]) : type; + } + function isNotOptionalTypeMarker(type) { + return type !== optionalType; + } + function removeOptionalTypeMarker(type) { + return strictNullChecks ? filterType(type, isNotOptionalTypeMarker) : type; + } + function propagateOptionalTypeMarker(type, node, wasOptional) { + return wasOptional ? ts.isOutermostOptionalChain(node) ? getOptionalType(type) : addOptionalTypeMarker(type) : type; + } + function getOptionalExpressionType(exprType, expression) { + return ts.isExpressionOfOptionalChainRoot(expression) ? getNonNullableType(exprType) : + ts.isOptionalChain(expression) ? removeOptionalTypeMarker(exprType) : + exprType; + } + /** + * Is source potentially coercible to target type under `==`. + * Assumes that `source` is a constituent of a union, hence + * the boolean literal flag on the LHS, but not on the RHS. + * + * This does not fully replicate the semantics of `==`. The + * intention is to catch cases that are clearly not right. + * + * Comparing (string | number) to number should not remove the + * string element. + * + * Comparing (string | number) to 1 will remove the string + * element, though this is not sound. This is a pragmatic + * choice. + * + * @see narrowTypeByEquality + * + * @param source + * @param target + */ + function isCoercibleUnderDoubleEquals(source, target) { + return ((source.flags & (8 /* Number */ | 4 /* String */ | 512 /* BooleanLiteral */)) !== 0) + && ((target.flags & (8 /* Number */ | 4 /* String */ | 16 /* Boolean */)) !== 0); + } + /** + * Return true if type was inferred from an object literal, written as an object type literal, or is the shape of a module + * with no call or construct signatures. + */ + function isObjectTypeWithInferableIndex(type) { + return type.flags & 2097152 /* Intersection */ ? ts.every(type.types, isObjectTypeWithInferableIndex) : + !!(type.symbol && (type.symbol.flags & (4096 /* ObjectLiteral */ | 2048 /* TypeLiteral */ | 384 /* Enum */ | 512 /* ValueModule */)) !== 0 && + !typeHasCallOrConstructSignatures(type)) || !!(ts.getObjectFlags(type) & 2048 /* ReverseMapped */ && isObjectTypeWithInferableIndex(type.source)); + } + function createSymbolWithType(source, type) { + var symbol = createSymbol(source.flags, source.escapedName, ts.getCheckFlags(source) & 8 /* Readonly */); + symbol.declarations = source.declarations; + symbol.parent = source.parent; + symbol.type = type; + symbol.target = source; + if (source.valueDeclaration) { + symbol.valueDeclaration = source.valueDeclaration; + } + var nameType = getSymbolLinks(source).nameType; + if (nameType) { + symbol.nameType = nameType; + } + return symbol; + } + function transformTypeOfMembers(type, f) { + var members = ts.createSymbolTable(); + for (var _i = 0, _a = getPropertiesOfObjectType(type); _i < _a.length; _i++) { + var property = _a[_i]; + var original = getTypeOfSymbol(property); + var updated = f(original); + members.set(property.escapedName, updated === original ? property : createSymbolWithType(property, updated)); + } + return members; + } + /** + * If the the provided object literal is subject to the excess properties check, + * create a new that is exempt. Recursively mark object literal members as exempt. + * Leave signatures alone since they are not subject to the check. + */ + function getRegularTypeOfObjectLiteral(type) { + if (!(isObjectLiteralType(type) && ts.getObjectFlags(type) & 32768 /* FreshLiteral */)) { + return type; + } + var regularType = type.regularType; + if (regularType) { + return regularType; + } + var resolved = type; + var members = transformTypeOfMembers(type, getRegularTypeOfObjectLiteral); + var regularNew = createAnonymousType(resolved.symbol, members, resolved.callSignatures, resolved.constructSignatures, resolved.stringIndexInfo, resolved.numberIndexInfo); + regularNew.flags = resolved.flags; + regularNew.objectFlags |= resolved.objectFlags & ~32768 /* FreshLiteral */; + type.regularType = regularNew; + return regularNew; + } + function createWideningContext(parent, propertyName, siblings) { + return { parent: parent, propertyName: propertyName, siblings: siblings, resolvedProperties: undefined }; + } + function getSiblingsOfContext(context) { + if (!context.siblings) { + var siblings_1 = []; + for (var _i = 0, _a = getSiblingsOfContext(context.parent); _i < _a.length; _i++) { + var type = _a[_i]; + if (isObjectLiteralType(type)) { + var prop = getPropertyOfObjectType(type, context.propertyName); + if (prop) { + forEachType(getTypeOfSymbol(prop), function (t) { + siblings_1.push(t); + }); + } + } + } + context.siblings = siblings_1; + } + return context.siblings; + } + function getPropertiesOfContext(context) { + if (!context.resolvedProperties) { + var names = ts.createMap(); + for (var _i = 0, _a = getSiblingsOfContext(context); _i < _a.length; _i++) { + var t = _a[_i]; + if (isObjectLiteralType(t) && !(ts.getObjectFlags(t) & 1024 /* ContainsSpread */)) { + for (var _b = 0, _c = getPropertiesOfType(t); _b < _c.length; _b++) { + var prop = _c[_b]; + names.set(prop.escapedName, prop); + } + } + } + context.resolvedProperties = ts.arrayFrom(names.values()); + } + return context.resolvedProperties; + } + function getWidenedProperty(prop, context) { + if (!(prop.flags & 4 /* Property */)) { + // Since get accessors already widen their return value there is no need to + // widen accessor based properties here. + return prop; + } + var original = getTypeOfSymbol(prop); + var propContext = context && createWideningContext(context, prop.escapedName, /*siblings*/ undefined); + var widened = getWidenedTypeWithContext(original, propContext); + return widened === original ? prop : createSymbolWithType(prop, widened); + } + function getUndefinedProperty(prop) { + var cached = undefinedProperties.get(prop.escapedName); + if (cached) { + return cached; + } + var result = createSymbolWithType(prop, undefinedType); + result.flags |= 16777216 /* Optional */; + undefinedProperties.set(prop.escapedName, result); + return result; + } + function getWidenedTypeOfObjectLiteral(type, context) { + var members = ts.createSymbolTable(); + for (var _i = 0, _a = getPropertiesOfObjectType(type); _i < _a.length; _i++) { + var prop = _a[_i]; + members.set(prop.escapedName, getWidenedProperty(prop, context)); + } + if (context) { + for (var _b = 0, _c = getPropertiesOfContext(context); _b < _c.length; _b++) { + var prop = _c[_b]; + if (!members.has(prop.escapedName)) { + members.set(prop.escapedName, getUndefinedProperty(prop)); + } + } + } + var stringIndexInfo = getIndexInfoOfType(type, 0 /* String */); + var numberIndexInfo = getIndexInfoOfType(type, 1 /* Number */); + var result = createAnonymousType(type.symbol, members, ts.emptyArray, ts.emptyArray, stringIndexInfo && createIndexInfo(getWidenedType(stringIndexInfo.type), stringIndexInfo.isReadonly), numberIndexInfo && createIndexInfo(getWidenedType(numberIndexInfo.type), numberIndexInfo.isReadonly)); + result.objectFlags |= (ts.getObjectFlags(type) & (16384 /* JSLiteral */ | 2097152 /* NonInferrableType */)); // Retain js literal flag through widening + return result; + } + function getWidenedType(type) { + return getWidenedTypeWithContext(type, /*context*/ undefined); + } + function getWidenedTypeWithContext(type, context) { + if (ts.getObjectFlags(type) & 1572864 /* RequiresWidening */) { + if (context === undefined && type.widened) { + return type.widened; + } + var result = void 0; + if (type.flags & (1 /* Any */ | 98304 /* Nullable */)) { + result = anyType; + } + else if (isObjectLiteralType(type)) { + result = getWidenedTypeOfObjectLiteral(type, context); + } + else if (type.flags & 1048576 /* Union */) { + var unionContext_1 = context || createWideningContext(/*parent*/ undefined, /*propertyName*/ undefined, type.types); + var widenedTypes = ts.sameMap(type.types, function (t) { return t.flags & 98304 /* Nullable */ ? t : getWidenedTypeWithContext(t, unionContext_1); }); + // Widening an empty object literal transitions from a highly restrictive type to + // a highly inclusive one. For that reason we perform subtype reduction here if the + // union includes empty object types (e.g. reducing {} | string to just {}). + result = getUnionType(widenedTypes, ts.some(widenedTypes, isEmptyObjectType) ? 2 /* Subtype */ : 1 /* Literal */); + } + else if (type.flags & 2097152 /* Intersection */) { + result = getIntersectionType(ts.sameMap(type.types, getWidenedType)); + } + else if (isArrayType(type) || isTupleType(type)) { + result = createTypeReference(type.target, ts.sameMap(getTypeArguments(type), getWidenedType)); + } + if (result && context === undefined) { + type.widened = result; + } + return result || type; + } + return type; + } + /** + * Reports implicit any errors that occur as a result of widening 'null' and 'undefined' + * to 'any'. A call to reportWideningErrorsInType is normally accompanied by a call to + * getWidenedType. But in some cases getWidenedType is called without reporting errors + * (type argument inference is an example). + * + * The return value indicates whether an error was in fact reported. The particular circumstances + * are on a best effort basis. Currently, if the null or undefined that causes widening is inside + * an object literal property (arbitrarily deeply), this function reports an error. If no error is + * reported, reportImplicitAnyError is a suitable fallback to report a general error. + */ + function reportWideningErrorsInType(type) { + var errorReported = false; + if (ts.getObjectFlags(type) & 524288 /* ContainsWideningType */) { + if (type.flags & 1048576 /* Union */) { + if (ts.some(type.types, isEmptyObjectType)) { + errorReported = true; + } + else { + for (var _i = 0, _a = type.types; _i < _a.length; _i++) { + var t = _a[_i]; + if (reportWideningErrorsInType(t)) { + errorReported = true; + } + } + } + } + if (isArrayType(type) || isTupleType(type)) { + for (var _b = 0, _c = getTypeArguments(type); _b < _c.length; _b++) { + var t = _c[_b]; + if (reportWideningErrorsInType(t)) { + errorReported = true; + } + } + } + if (isObjectLiteralType(type)) { + for (var _d = 0, _e = getPropertiesOfObjectType(type); _d < _e.length; _d++) { + var p = _e[_d]; + var t = getTypeOfSymbol(p); + if (ts.getObjectFlags(t) & 524288 /* ContainsWideningType */) { + if (!reportWideningErrorsInType(t)) { + error(p.valueDeclaration, ts.Diagnostics.Object_literal_s_property_0_implicitly_has_an_1_type, symbolToString(p), typeToString(getWidenedType(t))); + } + errorReported = true; + } + } + } + } + return errorReported; + } + function reportImplicitAny(declaration, type, wideningKind) { + var typeAsString = typeToString(getWidenedType(type)); + if (ts.isInJSFile(declaration) && !ts.isCheckJsEnabledForFile(ts.getSourceFileOfNode(declaration), compilerOptions)) { + // Only report implicit any errors/suggestions in TS and ts-check JS files + return; + } + var diagnostic; + switch (declaration.kind) { + case 209 /* BinaryExpression */: + case 159 /* PropertyDeclaration */: + case 158 /* PropertySignature */: + diagnostic = noImplicitAny ? ts.Diagnostics.Member_0_implicitly_has_an_1_type : ts.Diagnostics.Member_0_implicitly_has_an_1_type_but_a_better_type_may_be_inferred_from_usage; + break; + case 156 /* Parameter */: + var param = declaration; + if (ts.isIdentifier(param.name) && + (ts.isCallSignatureDeclaration(param.parent) || ts.isMethodSignature(param.parent) || ts.isFunctionTypeNode(param.parent)) && + param.parent.parameters.indexOf(param) > -1 && + (resolveName(param, param.name.escapedText, 788968 /* Type */, undefined, param.name.escapedText, /*isUse*/ true) || + param.name.originalKeywordKind && ts.isTypeNodeKind(param.name.originalKeywordKind))) { + var newName = "arg" + param.parent.parameters.indexOf(param); + errorOrSuggestion(noImplicitAny, declaration, ts.Diagnostics.Parameter_has_a_name_but_no_type_Did_you_mean_0_Colon_1, newName, ts.declarationNameToString(param.name)); + return; + } + diagnostic = declaration.dotDotDotToken ? + noImplicitAny ? ts.Diagnostics.Rest_parameter_0_implicitly_has_an_any_type : ts.Diagnostics.Rest_parameter_0_implicitly_has_an_any_type_but_a_better_type_may_be_inferred_from_usage : + noImplicitAny ? ts.Diagnostics.Parameter_0_implicitly_has_an_1_type : ts.Diagnostics.Parameter_0_implicitly_has_an_1_type_but_a_better_type_may_be_inferred_from_usage; + break; + case 191 /* BindingElement */: + diagnostic = ts.Diagnostics.Binding_element_0_implicitly_has_an_1_type; + if (!noImplicitAny) { + // Don't issue a suggestion for binding elements since the codefix doesn't yet support them. + return; + } + break; + case 300 /* JSDocFunctionType */: + error(declaration, ts.Diagnostics.Function_type_which_lacks_return_type_annotation_implicitly_has_an_0_return_type, typeAsString); + return; + case 244 /* FunctionDeclaration */: + case 161 /* MethodDeclaration */: + case 160 /* MethodSignature */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + case 201 /* FunctionExpression */: + case 202 /* ArrowFunction */: + if (noImplicitAny && !declaration.name) { + if (wideningKind === 3 /* GeneratorYield */) { + error(declaration, ts.Diagnostics.Generator_implicitly_has_yield_type_0_because_it_does_not_yield_any_values_Consider_supplying_a_return_type_annotation, typeAsString); + } + else { + error(declaration, ts.Diagnostics.Function_expression_which_lacks_return_type_annotation_implicitly_has_an_0_return_type, typeAsString); + } + return; + } + diagnostic = !noImplicitAny ? ts.Diagnostics._0_implicitly_has_an_1_return_type_but_a_better_type_may_be_inferred_from_usage : + wideningKind === 3 /* GeneratorYield */ ? ts.Diagnostics._0_which_lacks_return_type_annotation_implicitly_has_an_1_yield_type : + ts.Diagnostics._0_which_lacks_return_type_annotation_implicitly_has_an_1_return_type; + break; + case 186 /* MappedType */: + if (noImplicitAny) { + error(declaration, ts.Diagnostics.Mapped_object_type_implicitly_has_an_any_template_type); + } + return; + default: + diagnostic = noImplicitAny ? ts.Diagnostics.Variable_0_implicitly_has_an_1_type : ts.Diagnostics.Variable_0_implicitly_has_an_1_type_but_a_better_type_may_be_inferred_from_usage; + } + errorOrSuggestion(noImplicitAny, declaration, diagnostic, ts.declarationNameToString(ts.getNameOfDeclaration(declaration)), typeAsString); + } + function reportErrorsFromWidening(declaration, type, wideningKind) { + if (produceDiagnostics && noImplicitAny && ts.getObjectFlags(type) & 524288 /* ContainsWideningType */ && (!wideningKind || !getContextualSignatureForFunctionLikeDeclaration(declaration))) { + // Report implicit any error within type if possible, otherwise report error on declaration + if (!reportWideningErrorsInType(type)) { + reportImplicitAny(declaration, type, wideningKind); + } + } + } + function applyToParameterTypes(source, target, callback) { + var sourceCount = getParameterCount(source); + var targetCount = getParameterCount(target); + var sourceRestType = getEffectiveRestType(source); + var targetRestType = getEffectiveRestType(target); + var targetNonRestCount = targetRestType ? targetCount - 1 : targetCount; + var paramCount = sourceRestType ? targetNonRestCount : Math.min(sourceCount, targetNonRestCount); + var sourceThisType = getThisTypeOfSignature(source); + if (sourceThisType) { + var targetThisType = getThisTypeOfSignature(target); + if (targetThisType) { + callback(sourceThisType, targetThisType); + } + } + for (var i = 0; i < paramCount; i++) { + callback(getTypeAtPosition(source, i), getTypeAtPosition(target, i)); + } + if (targetRestType) { + callback(getRestTypeAtPosition(source, paramCount), targetRestType); + } + } + function applyToReturnTypes(source, target, callback) { + var sourceTypePredicate = getTypePredicateOfSignature(source); + var targetTypePredicate = getTypePredicateOfSignature(target); + if (sourceTypePredicate && targetTypePredicate && typePredicateKindsMatch(sourceTypePredicate, targetTypePredicate) && sourceTypePredicate.type && targetTypePredicate.type) { + callback(sourceTypePredicate.type, targetTypePredicate.type); + } + else { + callback(getReturnTypeOfSignature(source), getReturnTypeOfSignature(target)); + } + } + function createInferenceContext(typeParameters, signature, flags, compareTypes) { + return createInferenceContextWorker(typeParameters.map(createInferenceInfo), signature, flags, compareTypes || compareTypesAssignable); + } + function cloneInferenceContext(context, extraFlags) { + if (extraFlags === void 0) { extraFlags = 0; } + return context && createInferenceContextWorker(ts.map(context.inferences, cloneInferenceInfo), context.signature, context.flags | extraFlags, context.compareTypes); + } + function createInferenceContextWorker(inferences, signature, flags, compareTypes) { + var context = { + inferences: inferences, + signature: signature, + flags: flags, + compareTypes: compareTypes, + mapper: makeFunctionTypeMapper(function (t) { return mapToInferredType(context, t, /*fix*/ true); }), + nonFixingMapper: makeFunctionTypeMapper(function (t) { return mapToInferredType(context, t, /*fix*/ false); }), + }; + return context; + } + function mapToInferredType(context, t, fix) { + var inferences = context.inferences; + for (var i = 0; i < inferences.length; i++) { + var inference = inferences[i]; + if (t === inference.typeParameter) { + if (fix && !inference.isFixed) { + clearCachedInferences(inferences); + inference.isFixed = true; + } + return getInferredType(context, i); + } + } + return t; + } + function clearCachedInferences(inferences) { + for (var _i = 0, inferences_1 = inferences; _i < inferences_1.length; _i++) { + var inference = inferences_1[_i]; + if (!inference.isFixed) { + inference.inferredType = undefined; + } + } + } + function createInferenceInfo(typeParameter) { + return { + typeParameter: typeParameter, + candidates: undefined, + contraCandidates: undefined, + inferredType: undefined, + priority: undefined, + topLevel: true, + isFixed: false + }; + } + function cloneInferenceInfo(inference) { + return { + typeParameter: inference.typeParameter, + candidates: inference.candidates && inference.candidates.slice(), + contraCandidates: inference.contraCandidates && inference.contraCandidates.slice(), + inferredType: inference.inferredType, + priority: inference.priority, + topLevel: inference.topLevel, + isFixed: inference.isFixed + }; + } + function cloneInferredPartOfContext(context) { + var inferences = ts.filter(context.inferences, hasInferenceCandidates); + return inferences.length ? + createInferenceContextWorker(ts.map(inferences, cloneInferenceInfo), context.signature, context.flags, context.compareTypes) : + undefined; + } + function getMapperFromContext(context) { + return context && context.mapper; + } + // Return true if the given type could possibly reference a type parameter for which + // we perform type inference (i.e. a type parameter of a generic function). We cache + // results for union and intersection types for performance reasons. + function couldContainTypeVariables(type) { + var objectFlags = ts.getObjectFlags(type); + if (objectFlags & 67108864 /* CouldContainTypeVariablesComputed */) { + return !!(objectFlags & 134217728 /* CouldContainTypeVariables */); + } + var result = !!(type.flags & 63176704 /* Instantiable */ || + objectFlags & 4 /* Reference */ && (type.node || ts.forEach(getTypeArguments(type), couldContainTypeVariables)) || + objectFlags & 16 /* Anonymous */ && type.symbol && type.symbol.flags & (16 /* Function */ | 8192 /* Method */ | 32 /* Class */ | 2048 /* TypeLiteral */ | 4096 /* ObjectLiteral */) && type.symbol.declarations || + objectFlags & (32 /* Mapped */ | 131072 /* ObjectRestType */) || + type.flags & 3145728 /* UnionOrIntersection */ && !(type.flags & 1024 /* EnumLiteral */) && ts.some(type.types, couldContainTypeVariables)); + if (type.flags & 3899393 /* ObjectFlagsType */) { + type.objectFlags |= 67108864 /* CouldContainTypeVariablesComputed */ | (result ? 134217728 /* CouldContainTypeVariables */ : 0); + } + return result; + } + function isTypeParameterAtTopLevel(type, typeParameter) { + return !!(type === typeParameter || + type.flags & 3145728 /* UnionOrIntersection */ && ts.some(type.types, function (t) { return isTypeParameterAtTopLevel(t, typeParameter); }) || + type.flags & 16777216 /* Conditional */ && (isTypeParameterAtTopLevel(getTrueTypeFromConditionalType(type), typeParameter) || + isTypeParameterAtTopLevel(getFalseTypeFromConditionalType(type), typeParameter))); + } + /** Create an object with properties named in the string literal type. Every property has type `any` */ + function createEmptyObjectTypeFromStringLiteral(type) { + var members = ts.createSymbolTable(); + forEachType(type, function (t) { + if (!(t.flags & 128 /* StringLiteral */)) { + return; + } + var name = ts.escapeLeadingUnderscores(t.value); + var literalProp = createSymbol(4 /* Property */, name); + literalProp.type = anyType; + if (t.symbol) { + literalProp.declarations = t.symbol.declarations; + literalProp.valueDeclaration = t.symbol.valueDeclaration; + } + members.set(name, literalProp); + }); + var indexInfo = type.flags & 4 /* String */ ? createIndexInfo(emptyObjectType, /*isReadonly*/ false) : undefined; + return createAnonymousType(undefined, members, ts.emptyArray, ts.emptyArray, indexInfo, undefined); + } + /** + * Infer a suitable input type for a homomorphic mapped type { [P in keyof T]: X }. We construct + * an object type with the same set of properties as the source type, where the type of each + * property is computed by inferring from the source property type to X for the type + * variable T[P] (i.e. we treat the type T[P] as the type variable we're inferring for). + */ + function inferTypeForHomomorphicMappedType(source, target, constraint) { + var key = source.id + "," + target.id + "," + constraint.id; + if (reverseMappedCache.has(key)) { + return reverseMappedCache.get(key); + } + reverseMappedCache.set(key, undefined); + var type = createReverseMappedType(source, target, constraint); + reverseMappedCache.set(key, type); + return type; + } + // We consider a type to be partially inferable if it isn't marked non-inferable or if it is + // an object literal type with at least one property of an inferable type. For example, an object + // literal { a: 123, b: x => true } is marked non-inferable because it contains a context sensitive + // arrow function, but is considered partially inferable because property 'a' has an inferable type. + function isPartiallyInferableType(type) { + return !(ts.getObjectFlags(type) & 2097152 /* NonInferrableType */) || + isObjectLiteralType(type) && ts.some(getPropertiesOfType(type), function (prop) { return isPartiallyInferableType(getTypeOfSymbol(prop)); }); + } + function createReverseMappedType(source, target, constraint) { + // We consider a source type reverse mappable if it has a string index signature or if + // it has one or more properties and is of a partially inferable type. + if (!(getIndexInfoOfType(source, 0 /* String */) || getPropertiesOfType(source).length !== 0 && isPartiallyInferableType(source))) { + return undefined; + } + // For arrays and tuples we infer new arrays and tuples where the reverse mapping has been + // applied to the element type(s). + if (isArrayType(source)) { + return createArrayType(inferReverseMappedType(getTypeArguments(source)[0], target, constraint), isReadonlyArrayType(source)); + } + if (isTupleType(source)) { + var elementTypes = ts.map(getTypeArguments(source), function (t) { return inferReverseMappedType(t, target, constraint); }); + var minLength = getMappedTypeModifiers(target) & 4 /* IncludeOptional */ ? + getTypeReferenceArity(source) - (source.target.hasRestElement ? 1 : 0) : source.target.minLength; + return createTupleType(elementTypes, minLength, source.target.hasRestElement, source.target.readonly, source.target.associatedNames); + } + // For all other object types we infer a new object type where the reverse mapping has been + // applied to the type of each property. + var reversed = createObjectType(2048 /* ReverseMapped */ | 16 /* Anonymous */, /*symbol*/ undefined); + reversed.source = source; + reversed.mappedType = target; + reversed.constraintType = constraint; + return reversed; + } + function getTypeOfReverseMappedSymbol(symbol) { + return inferReverseMappedType(symbol.propertyType, symbol.mappedType, symbol.constraintType); + } + function inferReverseMappedType(sourceType, target, constraint) { + var typeParameter = getIndexedAccessType(constraint.type, getTypeParameterFromMappedType(target)); + var templateType = getTemplateTypeFromMappedType(target); + var inference = createInferenceInfo(typeParameter); + inferTypes([inference], sourceType, templateType); + return getTypeFromInference(inference) || unknownType; + } + function getUnmatchedProperties(source, target, requireOptionalProperties, matchDiscriminantProperties) { + var properties, _i, properties_2, targetProp, sourceProp, targetType, sourceType; + return __generator(this, function (_a) { + switch (_a.label) { + case 0: + properties = getPropertiesOfType(target); + _i = 0, properties_2 = properties; + _a.label = 1; + case 1: + if (!(_i < properties_2.length)) return [3 /*break*/, 6]; + targetProp = properties_2[_i]; + // TODO: remove this when we support static private identifier fields and find other solutions to get privateNamesAndStaticFields test to pass + if (isStaticPrivateIdentifierProperty(targetProp)) { + return [3 /*break*/, 5]; + } + if (!(requireOptionalProperties || !(targetProp.flags & 16777216 /* Optional */ || ts.getCheckFlags(targetProp) & 48 /* Partial */))) return [3 /*break*/, 5]; + sourceProp = getPropertyOfType(source, targetProp.escapedName); + if (!!sourceProp) return [3 /*break*/, 3]; + return [4 /*yield*/, targetProp]; + case 2: + _a.sent(); + return [3 /*break*/, 5]; + case 3: + if (!matchDiscriminantProperties) return [3 /*break*/, 5]; + targetType = getTypeOfSymbol(targetProp); + if (!(targetType.flags & 109440 /* Unit */)) return [3 /*break*/, 5]; + sourceType = getTypeOfSymbol(sourceProp); + if (!!(sourceType.flags & 1 /* Any */ || getRegularTypeOfLiteralType(sourceType) === getRegularTypeOfLiteralType(targetType))) return [3 /*break*/, 5]; + return [4 /*yield*/, targetProp]; + case 4: + _a.sent(); + _a.label = 5; + case 5: + _i++; + return [3 /*break*/, 1]; + case 6: return [2 /*return*/]; + } + }); + } + function getUnmatchedProperty(source, target, requireOptionalProperties, matchDiscriminantProperties) { + var result = getUnmatchedProperties(source, target, requireOptionalProperties, matchDiscriminantProperties).next(); + if (!result.done) + return result.value; + } + function tupleTypesDefinitelyUnrelated(source, target) { + return target.target.minLength > source.target.minLength || + !getRestTypeOfTupleType(target) && (!!getRestTypeOfTupleType(source) || getLengthOfTupleType(target) < getLengthOfTupleType(source)); + } + function typesDefinitelyUnrelated(source, target) { + // Two tuple types with incompatible arities are definitely unrelated. + // Two object types that each have a property that is unmatched in the other are definitely unrelated. + return isTupleType(source) && isTupleType(target) && tupleTypesDefinitelyUnrelated(source, target) || + !!getUnmatchedProperty(source, target, /*requireOptionalProperties*/ false, /*matchDiscriminantProperties*/ true) && + !!getUnmatchedProperty(target, source, /*requireOptionalProperties*/ false, /*matchDiscriminantProperties*/ true); + } + function getTypeFromInference(inference) { + return inference.candidates ? getUnionType(inference.candidates, 2 /* Subtype */) : + inference.contraCandidates ? getIntersectionType(inference.contraCandidates) : + undefined; + } + function hasSkipDirectInferenceFlag(node) { + return !!getNodeLinks(node).skipDirectInference; + } + function isFromInferenceBlockedSource(type) { + return !!(type.symbol && ts.some(type.symbol.declarations, hasSkipDirectInferenceFlag)); + } + function inferTypes(inferences, originalSource, originalTarget, priority, contravariant) { + if (priority === void 0) { priority = 0; } + if (contravariant === void 0) { contravariant = false; } + var symbolOrTypeStack; + var visited; + var bivariant = false; + var propagationType; + var inferencePriority = 512 /* MaxValue */; + var allowComplexConstraintInference = true; + inferFromTypes(originalSource, originalTarget); + function inferFromTypes(source, target) { + if (!couldContainTypeVariables(target)) { + return; + } + if (source === wildcardType) { + // We are inferring from an 'any' type. We want to infer this type for every type parameter + // referenced in the target type, so we record it as the propagation type and infer from the + // target to itself. Then, as we find candidates we substitute the propagation type. + var savePropagationType = propagationType; + propagationType = source; + inferFromTypes(target, target); + propagationType = savePropagationType; + return; + } + if (source.aliasSymbol && source.aliasTypeArguments && source.aliasSymbol === target.aliasSymbol) { + // Source and target are types originating in the same generic type alias declaration. + // Simply infer from source type arguments to target type arguments. + inferFromTypeArguments(source.aliasTypeArguments, target.aliasTypeArguments, getAliasVariances(source.aliasSymbol)); + return; + } + if (source === target && source.flags & 3145728 /* UnionOrIntersection */) { + // When source and target are the same union or intersection type, just relate each constituent + // type to itself. + for (var _i = 0, _a = source.types; _i < _a.length; _i++) { + var t = _a[_i]; + inferFromTypes(t, t); + } + return; + } + if (target.flags & 1048576 /* Union */) { + // First, infer between identically matching source and target constituents and remove the + // matching types. + var _b = inferFromMatchingTypes(source.flags & 1048576 /* Union */ ? source.types : [source], target.types, isTypeOrBaseIdenticalTo), tempSources = _b[0], tempTargets = _b[1]; + // Next, infer between closely matching source and target constituents and remove + // the matching types. Types closely match when they are instantiations of the same + // object type or instantiations of the same type alias. + var _c = inferFromMatchingTypes(tempSources, tempTargets, isTypeCloselyMatchedBy), sources = _c[0], targets = _c[1]; + if (targets.length === 0) { + return; + } + target = getUnionType(targets); + if (sources.length === 0) { + // All source constituents have been matched and there is nothing further to infer from. + // However, simply making no inferences is undesirable because it could ultimately mean + // inferring a type parameter constraint. Instead, make a lower priority inference from + // the full source to whatever remains in the target. For example, when inferring from + // string to 'string | T', make a lower priority inference of string for T. + inferWithPriority(source, target, 1 /* NakedTypeVariable */); + return; + } + source = getUnionType(sources); + } + else if (target.flags & 2097152 /* Intersection */ && ts.some(target.types, function (t) { return !!getInferenceInfoForType(t) || (isGenericMappedType(t) && !!getInferenceInfoForType(getHomomorphicTypeVariable(t) || neverType)); })) { + // We reduce intersection types only when they contain naked type parameters. For example, when + // inferring from 'string[] & { extra: any }' to 'string[] & T' we want to remove string[] and + // infer { extra: any } for T. But when inferring to 'string[] & Iterable' we want to keep the + // string[] on the source side and infer string for T. + // Likewise, we consider a homomorphic mapped type constrainted to the target type parameter as similar to a "naked type variable" + // in such scenarios. + if (!(source.flags & 1048576 /* Union */)) { + // Infer between identically matching source and target constituents and remove the matching types. + var _d = inferFromMatchingTypes(source.flags & 2097152 /* Intersection */ ? source.types : [source], target.types, isTypeIdenticalTo), sources = _d[0], targets = _d[1]; + if (sources.length === 0 || targets.length === 0) { + return; + } + source = getIntersectionType(sources); + target = getIntersectionType(targets); + } + } + else if (target.flags & (8388608 /* IndexedAccess */ | 33554432 /* Substitution */)) { + target = getActualTypeVariable(target); + } + if (target.flags & 8650752 /* TypeVariable */) { + // If target is a type parameter, make an inference, unless the source type contains + // the anyFunctionType (the wildcard type that's used to avoid contextually typing functions). + // Because the anyFunctionType is internal, it should not be exposed to the user by adding + // it as an inference candidate. Hopefully, a better candidate will come along that does + // not contain anyFunctionType when we come back to this argument for its second round + // of inference. Also, we exclude inferences for silentNeverType (which is used as a wildcard + // when constructing types from type parameters that had no inference candidates). + if (ts.getObjectFlags(source) & 2097152 /* NonInferrableType */ || source === nonInferrableAnyType || source === silentNeverType || + (priority & 32 /* ReturnType */ && (source === autoType || source === autoArrayType)) || isFromInferenceBlockedSource(source)) { + return; + } + var inference = getInferenceInfoForType(target); + if (inference) { + if (!inference.isFixed) { + if (inference.priority === undefined || priority < inference.priority) { + inference.candidates = undefined; + inference.contraCandidates = undefined; + inference.topLevel = true; + inference.priority = priority; + } + if (priority === inference.priority) { + var candidate = propagationType || source; + // We make contravariant inferences only if we are in a pure contravariant position, + // i.e. only if we have not descended into a bivariant position. + if (contravariant && !bivariant) { + if (!ts.contains(inference.contraCandidates, candidate)) { + inference.contraCandidates = ts.append(inference.contraCandidates, candidate); + clearCachedInferences(inferences); + } + } + else if (!ts.contains(inference.candidates, candidate)) { + inference.candidates = ts.append(inference.candidates, candidate); + clearCachedInferences(inferences); + } + } + if (!(priority & 32 /* ReturnType */) && target.flags & 262144 /* TypeParameter */ && inference.topLevel && !isTypeParameterAtTopLevel(originalTarget, target)) { + inference.topLevel = false; + clearCachedInferences(inferences); + } + } + inferencePriority = Math.min(inferencePriority, priority); + return; + } + else { + // Infer to the simplified version of an indexed access, if possible, to (hopefully) expose more bare type parameters to the inference engine + var simplified = getSimplifiedType(target, /*writing*/ false); + if (simplified !== target) { + invokeOnce(source, simplified, inferFromTypes); + } + else if (target.flags & 8388608 /* IndexedAccess */) { + var indexType = getSimplifiedType(target.indexType, /*writing*/ false); + // Generally simplifications of instantiable indexes are avoided to keep relationship checking correct, however if our target is an access, we can consider + // that key of that access to be "instantiated", since we're looking to find the infernce goal in any way we can. + if (indexType.flags & 63176704 /* Instantiable */) { + var simplified_1 = distributeIndexOverObjectType(getSimplifiedType(target.objectType, /*writing*/ false), indexType, /*writing*/ false); + if (simplified_1 && simplified_1 !== target) { + invokeOnce(source, simplified_1, inferFromTypes); + } + } + } + } + } + if (ts.getObjectFlags(source) & 4 /* Reference */ && ts.getObjectFlags(target) & 4 /* Reference */ && (source.target === target.target || isArrayType(source) && isArrayType(target)) && + !(source.node && target.node)) { + // If source and target are references to the same generic type, infer from type arguments + inferFromTypeArguments(getTypeArguments(source), getTypeArguments(target), getVariances(source.target)); + } + else if (source.flags & 4194304 /* Index */ && target.flags & 4194304 /* Index */) { + contravariant = !contravariant; + inferFromTypes(source.type, target.type); + contravariant = !contravariant; + } + else if ((isLiteralType(source) || source.flags & 4 /* String */) && target.flags & 4194304 /* Index */) { + var empty = createEmptyObjectTypeFromStringLiteral(source); + contravariant = !contravariant; + inferWithPriority(empty, target.type, 64 /* LiteralKeyof */); + contravariant = !contravariant; + } + else if (source.flags & 8388608 /* IndexedAccess */ && target.flags & 8388608 /* IndexedAccess */) { + inferFromTypes(source.objectType, target.objectType); + inferFromTypes(source.indexType, target.indexType); + } + else if (source.flags & 16777216 /* Conditional */ && target.flags & 16777216 /* Conditional */) { + inferFromTypes(source.checkType, target.checkType); + inferFromTypes(source.extendsType, target.extendsType); + inferFromTypes(getTrueTypeFromConditionalType(source), getTrueTypeFromConditionalType(target)); + inferFromTypes(getFalseTypeFromConditionalType(source), getFalseTypeFromConditionalType(target)); + } + else if (target.flags & 16777216 /* Conditional */) { + var savePriority = priority; + priority |= contravariant ? 16 /* ContravariantConditional */ : 0; + var targetTypes = [getTrueTypeFromConditionalType(target), getFalseTypeFromConditionalType(target)]; + inferToMultipleTypes(source, targetTypes, target.flags); + priority = savePriority; + } + else if (target.flags & 3145728 /* UnionOrIntersection */) { + inferToMultipleTypes(source, target.types, target.flags); + } + else if (source.flags & 1048576 /* Union */) { + // Source is a union or intersection type, infer from each constituent type + var sourceTypes = source.types; + for (var _e = 0, sourceTypes_2 = sourceTypes; _e < sourceTypes_2.length; _e++) { + var sourceType = sourceTypes_2[_e]; + inferFromTypes(sourceType, target); + } + } + else { + source = getReducedType(source); + if (!(priority & 128 /* NoConstraints */ && source.flags & (2097152 /* Intersection */ | 63176704 /* Instantiable */))) { + var apparentSource = getApparentType(source); + // getApparentType can return _any_ type, since an indexed access or conditional may simplify to any other type. + // If that occurs and it doesn't simplify to an object or intersection, we'll need to restart `inferFromTypes` + // with the simplified source. + if (apparentSource !== source && allowComplexConstraintInference && !(apparentSource.flags & (524288 /* Object */ | 2097152 /* Intersection */))) { + // TODO: The `allowComplexConstraintInference` flag is a hack! This forbids inference from complex constraints within constraints! + // This isn't required algorithmically, but rather is used to lower the memory burden caused by performing inference + // that is _too good_ in projects with complicated constraints (eg, fp-ts). In such cases, if we did not limit ourselves + // here, we might produce more valid inferences for types, causing us to do more checks and perform more instantiations + // (in addition to the extra stack depth here) which, in turn, can push the already close process over its limit. + // TL;DR: If we ever become generally more memory efficient (or our resource budget ever increases), we should just + // remove this `allowComplexConstraintInference` flag. + allowComplexConstraintInference = false; + return inferFromTypes(apparentSource, target); + } + source = apparentSource; + } + if (source.flags & (524288 /* Object */ | 2097152 /* Intersection */)) { + invokeOnce(source, target, inferFromObjectTypes); + } + } + if (source.flags & 25165824 /* Simplifiable */) { + var simplified = getSimplifiedType(source, contravariant); + if (simplified !== source) { + inferFromTypes(simplified, target); + } + } + } + function inferWithPriority(source, target, newPriority) { + var savePriority = priority; + priority |= newPriority; + inferFromTypes(source, target); + priority = savePriority; + } + function invokeOnce(source, target, action) { + var key = source.id + "," + target.id; + var status = visited && visited.get(key); + if (status !== undefined) { + inferencePriority = Math.min(inferencePriority, status); + return; + } + (visited || (visited = ts.createMap())).set(key, -1 /* Circularity */); + var saveInferencePriority = inferencePriority; + inferencePriority = 512 /* MaxValue */; + action(source, target); + visited.set(key, inferencePriority); + inferencePriority = Math.min(inferencePriority, saveInferencePriority); + } + function inferFromMatchingTypes(sources, targets, matches) { + var matchedSources; + var matchedTargets; + for (var _i = 0, targets_1 = targets; _i < targets_1.length; _i++) { + var t = targets_1[_i]; + for (var _a = 0, sources_1 = sources; _a < sources_1.length; _a++) { + var s = sources_1[_a]; + if (matches(s, t)) { + inferFromTypes(s, t); + matchedSources = ts.appendIfUnique(matchedSources, s); + matchedTargets = ts.appendIfUnique(matchedTargets, t); + } + } + } + return [ + matchedSources ? ts.filter(sources, function (t) { return !ts.contains(matchedSources, t); }) : sources, + matchedTargets ? ts.filter(targets, function (t) { return !ts.contains(matchedTargets, t); }) : targets, + ]; + } + function inferFromTypeArguments(sourceTypes, targetTypes, variances) { + var count = sourceTypes.length < targetTypes.length ? sourceTypes.length : targetTypes.length; + for (var i = 0; i < count; i++) { + if (i < variances.length && (variances[i] & 7 /* VarianceMask */) === 2 /* Contravariant */) { + inferFromContravariantTypes(sourceTypes[i], targetTypes[i]); + } + else { + inferFromTypes(sourceTypes[i], targetTypes[i]); + } + } + } + function inferFromContravariantTypes(source, target) { + if (strictFunctionTypes || priority & 256 /* AlwaysStrict */) { + contravariant = !contravariant; + inferFromTypes(source, target); + contravariant = !contravariant; + } + else { + inferFromTypes(source, target); + } + } + function getInferenceInfoForType(type) { + if (type.flags & 8650752 /* TypeVariable */) { + for (var _i = 0, inferences_2 = inferences; _i < inferences_2.length; _i++) { + var inference = inferences_2[_i]; + if (type === inference.typeParameter) { + return inference; + } + } + } + return undefined; + } + function getSingleTypeVariableFromIntersectionTypes(types) { + var typeVariable; + for (var _i = 0, types_14 = types; _i < types_14.length; _i++) { + var type = types_14[_i]; + var t = type.flags & 2097152 /* Intersection */ && ts.find(type.types, function (t) { return !!getInferenceInfoForType(t); }); + if (!t || typeVariable && t !== typeVariable) { + return undefined; + } + typeVariable = t; + } + return typeVariable; + } + function inferToMultipleTypes(source, targets, targetFlags) { + var typeVariableCount = 0; + if (targetFlags & 1048576 /* Union */) { + var nakedTypeVariable = void 0; + var sources = source.flags & 1048576 /* Union */ ? source.types : [source]; + var matched_1 = new Array(sources.length); + var inferenceCircularity = false; + // First infer to types that are not naked type variables. For each source type we + // track whether inferences were made from that particular type to some target with + // equal priority (i.e. of equal quality) to what we would infer for a naked type + // parameter. + for (var _i = 0, targets_2 = targets; _i < targets_2.length; _i++) { + var t = targets_2[_i]; + if (getInferenceInfoForType(t)) { + nakedTypeVariable = t; + typeVariableCount++; + } + else { + for (var i = 0; i < sources.length; i++) { + var saveInferencePriority = inferencePriority; + inferencePriority = 512 /* MaxValue */; + inferFromTypes(sources[i], t); + if (inferencePriority === priority) + matched_1[i] = true; + inferenceCircularity = inferenceCircularity || inferencePriority === -1 /* Circularity */; + inferencePriority = Math.min(inferencePriority, saveInferencePriority); + } + } + } + if (typeVariableCount === 0) { + // If every target is an intersection of types containing a single naked type variable, + // make a lower priority inference to that type variable. This handles inferring from + // 'A | B' to 'T & (X | Y)' where we want to infer 'A | B' for T. + var intersectionTypeVariable = getSingleTypeVariableFromIntersectionTypes(targets); + if (intersectionTypeVariable) { + inferWithPriority(source, intersectionTypeVariable, 1 /* NakedTypeVariable */); + } + return; + } + // If the target has a single naked type variable and no inference circularities were + // encountered above (meaning we explored the types fully), create a union of the source + // types from which no inferences have been made so far and infer from that union to the + // naked type variable. + if (typeVariableCount === 1 && !inferenceCircularity) { + var unmatched = ts.flatMap(sources, function (s, i) { return matched_1[i] ? undefined : s; }); + if (unmatched.length) { + inferFromTypes(getUnionType(unmatched), nakedTypeVariable); + return; + } + } + } + else { + // We infer from types that are not naked type variables first so that inferences we + // make from nested naked type variables and given slightly higher priority by virtue + // of being first in the candidates array. + for (var _a = 0, targets_3 = targets; _a < targets_3.length; _a++) { + var t = targets_3[_a]; + if (getInferenceInfoForType(t)) { + typeVariableCount++; + } + else { + inferFromTypes(source, t); + } + } + } + // Inferences directly to naked type variables are given lower priority as they are + // less specific. For example, when inferring from Promise to T | Promise, + // we want to infer string for T, not Promise | string. For intersection types + // we only infer to single naked type variables. + if (targetFlags & 2097152 /* Intersection */ ? typeVariableCount === 1 : typeVariableCount > 0) { + for (var _b = 0, targets_4 = targets; _b < targets_4.length; _b++) { + var t = targets_4[_b]; + if (getInferenceInfoForType(t)) { + inferWithPriority(source, t, 1 /* NakedTypeVariable */); + } + } + } + } + function inferToMappedType(source, target, constraintType) { + if (constraintType.flags & 1048576 /* Union */) { + var result = false; + for (var _i = 0, _a = constraintType.types; _i < _a.length; _i++) { + var type = _a[_i]; + result = inferToMappedType(source, target, type) || result; + } + return result; + } + if (constraintType.flags & 4194304 /* Index */) { + // We're inferring from some source type S to a homomorphic mapped type { [P in keyof T]: X }, + // where T is a type variable. Use inferTypeForHomomorphicMappedType to infer a suitable source + // type and then make a secondary inference from that type to T. We make a secondary inference + // such that direct inferences to T get priority over inferences to Partial, for example. + var inference = getInferenceInfoForType(constraintType.type); + if (inference && !inference.isFixed && !isFromInferenceBlockedSource(source)) { + var inferredType = inferTypeForHomomorphicMappedType(source, target, constraintType); + if (inferredType) { + // We assign a lower priority to inferences made from types containing non-inferrable + // types because we may only have a partial result (i.e. we may have failed to make + // reverse inferences for some properties). + inferWithPriority(inferredType, inference.typeParameter, ts.getObjectFlags(source) & 2097152 /* NonInferrableType */ ? + 4 /* PartialHomomorphicMappedType */ : + 2 /* HomomorphicMappedType */); + } + } + return true; + } + if (constraintType.flags & 262144 /* TypeParameter */) { + // We're inferring from some source type S to a mapped type { [P in K]: X }, where K is a type + // parameter. First infer from 'keyof S' to K. + inferWithPriority(getIndexType(source), constraintType, 8 /* MappedTypeConstraint */); + // If K is constrained to a type C, also infer to C. Thus, for a mapped type { [P in K]: X }, + // where K extends keyof T, we make the same inferences as for a homomorphic mapped type + // { [P in keyof T]: X }. This enables us to make meaningful inferences when the target is a + // Pick. + var extendedConstraint = getConstraintOfType(constraintType); + if (extendedConstraint && inferToMappedType(source, target, extendedConstraint)) { + return true; + } + // If no inferences can be made to K's constraint, infer from a union of the property types + // in the source to the template type X. + var propTypes = ts.map(getPropertiesOfType(source), getTypeOfSymbol); + var stringIndexType = getIndexTypeOfType(source, 0 /* String */); + var numberIndexInfo = getNonEnumNumberIndexInfo(source); + var numberIndexType = numberIndexInfo && numberIndexInfo.type; + inferFromTypes(getUnionType(ts.append(ts.append(propTypes, stringIndexType), numberIndexType)), getTemplateTypeFromMappedType(target)); + return true; + } + return false; + } + function inferFromObjectTypes(source, target) { + // If we are already processing another target type with the same associated symbol (such as + // an instantiation of the same generic type), we do not explore this target as it would yield + // no further inferences. We exclude the static side of classes from this check since it shares + // its symbol with the instance side which would lead to false positives. + var isNonConstructorObject = target.flags & 524288 /* Object */ && + !(ts.getObjectFlags(target) & 16 /* Anonymous */ && target.symbol && target.symbol.flags & 32 /* Class */); + var symbolOrType = isNonConstructorObject ? isTupleType(target) ? target.target : target.symbol : undefined; + if (symbolOrType) { + if (ts.contains(symbolOrTypeStack, symbolOrType)) { + inferencePriority = -1 /* Circularity */; + return; + } + (symbolOrTypeStack || (symbolOrTypeStack = [])).push(symbolOrType); + inferFromObjectTypesWorker(source, target); + symbolOrTypeStack.pop(); + } + else { + inferFromObjectTypesWorker(source, target); + } + } + function inferFromObjectTypesWorker(source, target) { + if (ts.getObjectFlags(source) & 4 /* Reference */ && ts.getObjectFlags(target) & 4 /* Reference */ && (source.target === target.target || isArrayType(source) && isArrayType(target))) { + // If source and target are references to the same generic type, infer from type arguments + inferFromTypeArguments(getTypeArguments(source), getTypeArguments(target), getVariances(source.target)); + return; + } + if (isGenericMappedType(source) && isGenericMappedType(target)) { + // The source and target types are generic types { [P in S]: X } and { [P in T]: Y }, so we infer + // from S to T and from X to Y. + inferFromTypes(getConstraintTypeFromMappedType(source), getConstraintTypeFromMappedType(target)); + inferFromTypes(getTemplateTypeFromMappedType(source), getTemplateTypeFromMappedType(target)); + } + if (ts.getObjectFlags(target) & 32 /* Mapped */) { + var constraintType = getConstraintTypeFromMappedType(target); + if (inferToMappedType(source, target, constraintType)) { + return; + } + } + // Infer from the members of source and target only if the two types are possibly related + if (!typesDefinitelyUnrelated(source, target)) { + if (isArrayType(source) || isTupleType(source)) { + if (isTupleType(target)) { + var sourceLength = isTupleType(source) ? getLengthOfTupleType(source) : 0; + var targetLength = getLengthOfTupleType(target); + var sourceRestType = isTupleType(source) ? getRestTypeOfTupleType(source) : getElementTypeOfArrayType(source); + var targetRestType = getRestTypeOfTupleType(target); + var fixedLength = targetLength < sourceLength || sourceRestType ? targetLength : sourceLength; + for (var i = 0; i < fixedLength; i++) { + inferFromTypes(i < sourceLength ? getTypeArguments(source)[i] : sourceRestType, getTypeArguments(target)[i]); + } + if (targetRestType) { + var types = fixedLength < sourceLength ? getTypeArguments(source).slice(fixedLength, sourceLength) : []; + if (sourceRestType) { + types.push(sourceRestType); + } + if (types.length) { + inferFromTypes(getUnionType(types), targetRestType); + } + } + return; + } + if (isArrayType(target)) { + inferFromIndexTypes(source, target); + return; + } + } + inferFromProperties(source, target); + inferFromSignatures(source, target, 0 /* Call */); + inferFromSignatures(source, target, 1 /* Construct */); + inferFromIndexTypes(source, target); + } + } + function inferFromProperties(source, target) { + var properties = getPropertiesOfObjectType(target); + for (var _i = 0, properties_3 = properties; _i < properties_3.length; _i++) { + var targetProp = properties_3[_i]; + var sourceProp = getPropertyOfType(source, targetProp.escapedName); + if (sourceProp) { + inferFromTypes(getTypeOfSymbol(sourceProp), getTypeOfSymbol(targetProp)); + } + } + } + function inferFromSignatures(source, target, kind) { + var sourceSignatures = getSignaturesOfType(source, kind); + var targetSignatures = getSignaturesOfType(target, kind); + var sourceLen = sourceSignatures.length; + var targetLen = targetSignatures.length; + var len = sourceLen < targetLen ? sourceLen : targetLen; + var skipParameters = !!(ts.getObjectFlags(source) & 2097152 /* NonInferrableType */); + for (var i = 0; i < len; i++) { + inferFromSignature(getBaseSignature(sourceSignatures[sourceLen - len + i]), getErasedSignature(targetSignatures[targetLen - len + i]), skipParameters); + } + } + function inferFromSignature(source, target, skipParameters) { + if (!skipParameters) { + var saveBivariant = bivariant; + var kind = target.declaration ? target.declaration.kind : 0 /* Unknown */; + // Once we descend into a bivariant signature we remain bivariant for all nested inferences + bivariant = bivariant || kind === 161 /* MethodDeclaration */ || kind === 160 /* MethodSignature */ || kind === 162 /* Constructor */; + applyToParameterTypes(source, target, inferFromContravariantTypes); + bivariant = saveBivariant; + } + applyToReturnTypes(source, target, inferFromTypes); + } + function inferFromIndexTypes(source, target) { + var targetStringIndexType = getIndexTypeOfType(target, 0 /* String */); + if (targetStringIndexType) { + var sourceIndexType = getIndexTypeOfType(source, 0 /* String */) || + getImplicitIndexTypeOfType(source, 0 /* String */); + if (sourceIndexType) { + inferFromTypes(sourceIndexType, targetStringIndexType); + } + } + var targetNumberIndexType = getIndexTypeOfType(target, 1 /* Number */); + if (targetNumberIndexType) { + var sourceIndexType = getIndexTypeOfType(source, 1 /* Number */) || + getIndexTypeOfType(source, 0 /* String */) || + getImplicitIndexTypeOfType(source, 1 /* Number */); + if (sourceIndexType) { + inferFromTypes(sourceIndexType, targetNumberIndexType); + } + } + } + } + function isTypeOrBaseIdenticalTo(s, t) { + return isTypeIdenticalTo(s, t) || !!(t.flags & 4 /* String */ && s.flags & 128 /* StringLiteral */ || t.flags & 8 /* Number */ && s.flags & 256 /* NumberLiteral */); + } + function isTypeCloselyMatchedBy(s, t) { + return !!(s.flags & 524288 /* Object */ && t.flags & 524288 /* Object */ && s.symbol && s.symbol === t.symbol || + s.aliasSymbol && s.aliasTypeArguments && s.aliasSymbol === t.aliasSymbol); + } + function hasPrimitiveConstraint(type) { + var constraint = getConstraintOfTypeParameter(type); + return !!constraint && maybeTypeOfKind(constraint.flags & 16777216 /* Conditional */ ? getDefaultConstraintOfConditionalType(constraint) : constraint, 131068 /* Primitive */ | 4194304 /* Index */); + } + function isObjectLiteralType(type) { + return !!(ts.getObjectFlags(type) & 128 /* ObjectLiteral */); + } + function isObjectOrArrayLiteralType(type) { + return !!(ts.getObjectFlags(type) & (128 /* ObjectLiteral */ | 65536 /* ArrayLiteral */)); + } + function unionObjectAndArrayLiteralCandidates(candidates) { + if (candidates.length > 1) { + var objectLiterals = ts.filter(candidates, isObjectOrArrayLiteralType); + if (objectLiterals.length) { + var literalsType = getUnionType(objectLiterals, 2 /* Subtype */); + return ts.concatenate(ts.filter(candidates, function (t) { return !isObjectOrArrayLiteralType(t); }), [literalsType]); + } + } + return candidates; + } + function getContravariantInference(inference) { + return inference.priority & 104 /* PriorityImpliesCombination */ ? getIntersectionType(inference.contraCandidates) : getCommonSubtype(inference.contraCandidates); + } + function getCovariantInference(inference, signature) { + // Extract all object and array literal types and replace them with a single widened and normalized type. + var candidates = unionObjectAndArrayLiteralCandidates(inference.candidates); + // We widen inferred literal types if + // all inferences were made to top-level occurrences of the type parameter, and + // the type parameter has no constraint or its constraint includes no primitive or literal types, and + // the type parameter was fixed during inference or does not occur at top-level in the return type. + var primitiveConstraint = hasPrimitiveConstraint(inference.typeParameter); + var widenLiteralTypes = !primitiveConstraint && inference.topLevel && + (inference.isFixed || !isTypeParameterAtTopLevel(getReturnTypeOfSignature(signature), inference.typeParameter)); + var baseCandidates = primitiveConstraint ? ts.sameMap(candidates, getRegularTypeOfLiteralType) : + widenLiteralTypes ? ts.sameMap(candidates, getWidenedLiteralType) : + candidates; + // If all inferences were made from a position that implies a combined result, infer a union type. + // Otherwise, infer a common supertype. + var unwidenedType = inference.priority & 104 /* PriorityImpliesCombination */ ? + getUnionType(baseCandidates, 2 /* Subtype */) : + getCommonSupertype(baseCandidates); + return getWidenedType(unwidenedType); + } + function getInferredType(context, index) { + var inference = context.inferences[index]; + if (!inference.inferredType) { + var inferredType = void 0; + var signature = context.signature; + if (signature) { + var inferredCovariantType = inference.candidates ? getCovariantInference(inference, signature) : undefined; + if (inference.contraCandidates) { + var inferredContravariantType = getContravariantInference(inference); + // If we have both co- and contra-variant inferences, we prefer the contra-variant inference + // unless the co-variant inference is a subtype and not 'never'. + inferredType = inferredCovariantType && !(inferredCovariantType.flags & 131072 /* Never */) && + isTypeSubtypeOf(inferredCovariantType, inferredContravariantType) ? + inferredCovariantType : inferredContravariantType; + } + else if (inferredCovariantType) { + inferredType = inferredCovariantType; + } + else if (context.flags & 1 /* NoDefault */) { + // We use silentNeverType as the wildcard that signals no inferences. + inferredType = silentNeverType; + } + else { + // Infer either the default or the empty object type when no inferences were + // made. It is important to remember that in this case, inference still + // succeeds, meaning there is no error for not having inference candidates. An + // inference error only occurs when there are *conflicting* candidates, i.e. + // candidates with no common supertype. + var defaultType = getDefaultFromTypeParameter(inference.typeParameter); + if (defaultType) { + // Instantiate the default type. Any forward reference to a type + // parameter should be instantiated to the empty object type. + inferredType = instantiateType(defaultType, mergeTypeMappers(createBackreferenceMapper(context, index), context.nonFixingMapper)); + } + } + } + else { + inferredType = getTypeFromInference(inference); + } + inference.inferredType = inferredType || getDefaultTypeArgumentType(!!(context.flags & 2 /* AnyDefault */)); + var constraint = getConstraintOfTypeParameter(inference.typeParameter); + if (constraint) { + var instantiatedConstraint = instantiateType(constraint, context.nonFixingMapper); + if (!inferredType || !context.compareTypes(inferredType, getTypeWithThisArgument(instantiatedConstraint, inferredType))) { + inference.inferredType = inferredType = instantiatedConstraint; + } + } + } + return inference.inferredType; + } + function getDefaultTypeArgumentType(isInJavaScriptFile) { + return isInJavaScriptFile ? anyType : unknownType; + } + function getInferredTypes(context) { + var result = []; + for (var i = 0; i < context.inferences.length; i++) { + result.push(getInferredType(context, i)); + } + return result; + } + // EXPRESSION TYPE CHECKING + function getCannotFindNameDiagnosticForName(node) { + switch (node.escapedText) { + case "document": + case "console": + return ts.Diagnostics.Cannot_find_name_0_Do_you_need_to_change_your_target_library_Try_changing_the_lib_compiler_option_to_include_dom; + case "$": + return compilerOptions.types + ? ts.Diagnostics.Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_jQuery_Try_npm_i_types_Slashjquery_and_then_add_jquery_to_the_types_field_in_your_tsconfig + : ts.Diagnostics.Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_jQuery_Try_npm_i_types_Slashjquery; + case "describe": + case "suite": + case "it": + case "test": + return compilerOptions.types + ? ts.Diagnostics.Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_a_test_runner_Try_npm_i_types_Slashjest_or_npm_i_types_Slashmocha_and_then_add_jest_or_mocha_to_the_types_field_in_your_tsconfig + : ts.Diagnostics.Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_a_test_runner_Try_npm_i_types_Slashjest_or_npm_i_types_Slashmocha; + case "process": + case "require": + case "Buffer": + case "module": + return compilerOptions.types + ? ts.Diagnostics.Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_node_Try_npm_i_types_Slashnode_and_then_add_node_to_the_types_field_in_your_tsconfig + : ts.Diagnostics.Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_node_Try_npm_i_types_Slashnode; + case "Map": + case "Set": + case "Promise": + case "Symbol": + case "WeakMap": + case "WeakSet": + case "Iterator": + case "AsyncIterator": + return ts.Diagnostics.Cannot_find_name_0_Do_you_need_to_change_your_target_library_Try_changing_the_lib_compiler_option_to_es2015_or_later; + default: + if (node.parent.kind === 282 /* ShorthandPropertyAssignment */) { + return ts.Diagnostics.No_value_exists_in_scope_for_the_shorthand_property_0_Either_declare_one_or_provide_an_initializer; + } + else { + return ts.Diagnostics.Cannot_find_name_0; + } + } + } + function getResolvedSymbol(node) { + var links = getNodeLinks(node); + if (!links.resolvedSymbol) { + links.resolvedSymbol = !ts.nodeIsMissing(node) && + resolveName(node, node.escapedText, 111551 /* Value */ | 1048576 /* ExportValue */, getCannotFindNameDiagnosticForName(node), node, !ts.isWriteOnlyAccess(node), + /*excludeGlobals*/ false, ts.Diagnostics.Cannot_find_name_0_Did_you_mean_1) || unknownSymbol; + } + return links.resolvedSymbol; + } + function isInTypeQuery(node) { + // TypeScript 1.0 spec (April 2014): 3.6.3 + // A type query consists of the keyword typeof followed by an expression. + // The expression is restricted to a single identifier or a sequence of identifiers separated by periods + return !!ts.findAncestor(node, function (n) { return n.kind === 172 /* TypeQuery */ ? true : n.kind === 75 /* Identifier */ || n.kind === 153 /* QualifiedName */ ? false : "quit"; }); + } + // Return the flow cache key for a "dotted name" (i.e. a sequence of identifiers + // separated by dots). The key consists of the id of the symbol referenced by the + // leftmost identifier followed by zero or more property names separated by dots. + // The result is undefined if the reference isn't a dotted name. We prefix nodes + // occurring in an apparent type position with '@' because the control flow type + // of such nodes may be based on the apparent type instead of the declared type. + function getFlowCacheKey(node, declaredType, initialType, flowContainer) { + switch (node.kind) { + case 75 /* Identifier */: + var symbol = getResolvedSymbol(node); + return symbol !== unknownSymbol ? (flowContainer ? getNodeId(flowContainer) : "-1") + "|" + getTypeId(declaredType) + "|" + getTypeId(initialType) + "|" + (isConstraintPosition(node) ? "@" : "") + getSymbolId(symbol) : undefined; + case 104 /* ThisKeyword */: + return "0"; + case 218 /* NonNullExpression */: + case 200 /* ParenthesizedExpression */: + return getFlowCacheKey(node.expression, declaredType, initialType, flowContainer); + case 194 /* PropertyAccessExpression */: + case 195 /* ElementAccessExpression */: + var propName = getAccessedPropertyName(node); + if (propName !== undefined) { + var key = getFlowCacheKey(node.expression, declaredType, initialType, flowContainer); + return key && key + "." + propName; + } + } + return undefined; + } + function isMatchingReference(source, target) { + switch (target.kind) { + case 200 /* ParenthesizedExpression */: + case 218 /* NonNullExpression */: + return isMatchingReference(source, target.expression); + } + switch (source.kind) { + case 75 /* Identifier */: + return target.kind === 75 /* Identifier */ && getResolvedSymbol(source) === getResolvedSymbol(target) || + (target.kind === 242 /* VariableDeclaration */ || target.kind === 191 /* BindingElement */) && + getExportSymbolOfValueSymbolIfExported(getResolvedSymbol(source)) === getSymbolOfNode(target); + case 104 /* ThisKeyword */: + return target.kind === 104 /* ThisKeyword */; + case 102 /* SuperKeyword */: + return target.kind === 102 /* SuperKeyword */; + case 218 /* NonNullExpression */: + case 200 /* ParenthesizedExpression */: + return isMatchingReference(source.expression, target); + case 194 /* PropertyAccessExpression */: + case 195 /* ElementAccessExpression */: + return ts.isAccessExpression(target) && + getAccessedPropertyName(source) === getAccessedPropertyName(target) && + isMatchingReference(source.expression, target.expression); + } + return false; + } + // Given a source x, check if target matches x or is an && operation with an operand that matches x. + function containsTruthyCheck(source, target) { + return isMatchingReference(source, target) || + (target.kind === 209 /* BinaryExpression */ && target.operatorToken.kind === 55 /* AmpersandAmpersandToken */ && + (containsTruthyCheck(source, target.left) || containsTruthyCheck(source, target.right))); + } + function getAccessedPropertyName(access) { + return access.kind === 194 /* PropertyAccessExpression */ ? access.name.escapedText : + ts.isStringOrNumericLiteralLike(access.argumentExpression) ? ts.escapeLeadingUnderscores(access.argumentExpression.text) : + undefined; + } + function containsMatchingReference(source, target) { + while (ts.isAccessExpression(source)) { + source = source.expression; + if (isMatchingReference(source, target)) { + return true; + } + } + return false; + } + function optionalChainContainsReference(source, target) { + while (ts.isOptionalChain(source)) { + source = source.expression; + if (isMatchingReference(source, target)) { + return true; + } + } + return false; + } + function isDiscriminantProperty(type, name) { + if (type && type.flags & 1048576 /* Union */) { + var prop = getUnionOrIntersectionProperty(type, name); + if (prop && ts.getCheckFlags(prop) & 2 /* SyntheticProperty */) { + if (prop.isDiscriminantProperty === undefined) { + prop.isDiscriminantProperty = + (prop.checkFlags & 192 /* Discriminant */) === 192 /* Discriminant */ && + !maybeTypeOfKind(getTypeOfSymbol(prop), 63176704 /* Instantiable */); + } + return !!prop.isDiscriminantProperty; + } + } + return false; + } + function findDiscriminantProperties(sourceProperties, target) { + var result; + for (var _i = 0, sourceProperties_2 = sourceProperties; _i < sourceProperties_2.length; _i++) { + var sourceProperty = sourceProperties_2[_i]; + if (isDiscriminantProperty(target, sourceProperty.escapedName)) { + if (result) { + result.push(sourceProperty); + continue; + } + result = [sourceProperty]; + } + } + return result; + } + function isOrContainsMatchingReference(source, target) { + return isMatchingReference(source, target) || containsMatchingReference(source, target); + } + function hasMatchingArgument(callExpression, reference) { + if (callExpression.arguments) { + for (var _i = 0, _a = callExpression.arguments; _i < _a.length; _i++) { + var argument = _a[_i]; + if (isOrContainsMatchingReference(reference, argument)) { + return true; + } + } + } + if (callExpression.expression.kind === 194 /* PropertyAccessExpression */ && + isOrContainsMatchingReference(reference, callExpression.expression.expression)) { + return true; + } + return false; + } + function getFlowNodeId(flow) { + if (!flow.id || flow.id < 0) { + flow.id = nextFlowId; + nextFlowId++; + } + return flow.id; + } + function typeMaybeAssignableTo(source, target) { + if (!(source.flags & 1048576 /* Union */)) { + return isTypeAssignableTo(source, target); + } + for (var _i = 0, _a = source.types; _i < _a.length; _i++) { + var t = _a[_i]; + if (isTypeAssignableTo(t, target)) { + return true; + } + } + return false; + } + // Remove those constituent types of declaredType to which no constituent type of assignedType is assignable. + // For example, when a variable of type number | string | boolean is assigned a value of type number | boolean, + // we remove type string. + function getAssignmentReducedType(declaredType, assignedType) { + if (declaredType !== assignedType) { + if (assignedType.flags & 131072 /* Never */) { + return assignedType; + } + var reducedType = filterType(declaredType, function (t) { return typeMaybeAssignableTo(assignedType, t); }); + if (assignedType.flags & 512 /* BooleanLiteral */ && isFreshLiteralType(assignedType)) { + reducedType = mapType(reducedType, getFreshTypeOfLiteralType); // Ensure that if the assignment is a fresh type, that we narrow to fresh types + } + // Our crude heuristic produces an invalid result in some cases: see GH#26130. + // For now, when that happens, we give up and don't narrow at all. (This also + // means we'll never narrow for erroneous assignments where the assigned type + // is not assignable to the declared type.) + if (isTypeAssignableTo(assignedType, reducedType)) { + return reducedType; + } + } + return declaredType; + } + function getTypeFactsOfTypes(types) { + var result = 0 /* None */; + for (var _i = 0, types_15 = types; _i < types_15.length; _i++) { + var t = types_15[_i]; + result |= getTypeFacts(t); + } + return result; + } + function isFunctionObjectType(type) { + // We do a quick check for a "bind" property before performing the more expensive subtype + // check. This gives us a quicker out in the common case where an object type is not a function. + var resolved = resolveStructuredTypeMembers(type); + return !!(resolved.callSignatures.length || resolved.constructSignatures.length || + resolved.members.get("bind") && isTypeSubtypeOf(type, globalFunctionType)); + } + function getTypeFacts(type) { + var flags = type.flags; + if (flags & 4 /* String */) { + return strictNullChecks ? 16317953 /* StringStrictFacts */ : 16776705 /* StringFacts */; + } + if (flags & 128 /* StringLiteral */) { + var isEmpty = type.value === ""; + return strictNullChecks ? + isEmpty ? 12123649 /* EmptyStringStrictFacts */ : 7929345 /* NonEmptyStringStrictFacts */ : + isEmpty ? 12582401 /* EmptyStringFacts */ : 16776705 /* NonEmptyStringFacts */; + } + if (flags & (8 /* Number */ | 32 /* Enum */)) { + return strictNullChecks ? 16317698 /* NumberStrictFacts */ : 16776450 /* NumberFacts */; + } + if (flags & 256 /* NumberLiteral */) { + var isZero = type.value === 0; + return strictNullChecks ? + isZero ? 12123394 /* ZeroNumberStrictFacts */ : 7929090 /* NonZeroNumberStrictFacts */ : + isZero ? 12582146 /* ZeroNumberFacts */ : 16776450 /* NonZeroNumberFacts */; + } + if (flags & 64 /* BigInt */) { + return strictNullChecks ? 16317188 /* BigIntStrictFacts */ : 16775940 /* BigIntFacts */; + } + if (flags & 2048 /* BigIntLiteral */) { + var isZero = isZeroBigInt(type); + return strictNullChecks ? + isZero ? 12122884 /* ZeroBigIntStrictFacts */ : 7928580 /* NonZeroBigIntStrictFacts */ : + isZero ? 12581636 /* ZeroBigIntFacts */ : 16775940 /* NonZeroBigIntFacts */; + } + if (flags & 16 /* Boolean */) { + return strictNullChecks ? 16316168 /* BooleanStrictFacts */ : 16774920 /* BooleanFacts */; + } + if (flags & 528 /* BooleanLike */) { + return strictNullChecks ? + (type === falseType || type === regularFalseType) ? 12121864 /* FalseStrictFacts */ : 7927560 /* TrueStrictFacts */ : + (type === falseType || type === regularFalseType) ? 12580616 /* FalseFacts */ : 16774920 /* TrueFacts */; + } + if (flags & 524288 /* Object */) { + return ts.getObjectFlags(type) & 16 /* Anonymous */ && isEmptyObjectType(type) ? + strictNullChecks ? 16318463 /* EmptyObjectStrictFacts */ : 16777215 /* EmptyObjectFacts */ : + isFunctionObjectType(type) ? + strictNullChecks ? 7880640 /* FunctionStrictFacts */ : 16728000 /* FunctionFacts */ : + strictNullChecks ? 7888800 /* ObjectStrictFacts */ : 16736160 /* ObjectFacts */; + } + if (flags & (16384 /* Void */ | 32768 /* Undefined */)) { + return 9830144 /* UndefinedFacts */; + } + if (flags & 65536 /* Null */) { + return 9363232 /* NullFacts */; + } + if (flags & 12288 /* ESSymbolLike */) { + return strictNullChecks ? 7925520 /* SymbolStrictFacts */ : 16772880 /* SymbolFacts */; + } + if (flags & 67108864 /* NonPrimitive */) { + return strictNullChecks ? 7888800 /* ObjectStrictFacts */ : 16736160 /* ObjectFacts */; + } + if (flags & 131072 /* Never */) { + return 0 /* None */; + } + if (flags & 63176704 /* Instantiable */) { + return getTypeFacts(getBaseConstraintOfType(type) || unknownType); + } + if (flags & 3145728 /* UnionOrIntersection */) { + return getTypeFactsOfTypes(type.types); + } + return 16777215 /* All */; + } + function getTypeWithFacts(type, include) { + return filterType(type, function (t) { return (getTypeFacts(t) & include) !== 0; }); + } + function getTypeWithDefault(type, defaultExpression) { + if (defaultExpression) { + var defaultType = getTypeOfExpression(defaultExpression); + return getUnionType([getTypeWithFacts(type, 524288 /* NEUndefined */), defaultType]); + } + return type; + } + function getTypeOfDestructuredProperty(type, name) { + var nameType = getLiteralTypeFromPropertyName(name); + if (!isTypeUsableAsPropertyName(nameType)) + return errorType; + var text = getPropertyNameFromType(nameType); + return getConstraintForLocation(getTypeOfPropertyOfType(type, text), name) || + isNumericLiteralName(text) && getIndexTypeOfType(type, 1 /* Number */) || + getIndexTypeOfType(type, 0 /* String */) || + errorType; + } + function getTypeOfDestructuredArrayElement(type, index) { + return everyType(type, isTupleLikeType) && getTupleElementType(type, index) || + checkIteratedTypeOrElementType(65 /* Destructuring */, type, undefinedType, /*errorNode*/ undefined) || + errorType; + } + function getTypeOfDestructuredSpreadExpression(type) { + return createArrayType(checkIteratedTypeOrElementType(65 /* Destructuring */, type, undefinedType, /*errorNode*/ undefined) || errorType); + } + function getAssignedTypeOfBinaryExpression(node) { + var isDestructuringDefaultAssignment = node.parent.kind === 192 /* ArrayLiteralExpression */ && isDestructuringAssignmentTarget(node.parent) || + node.parent.kind === 281 /* PropertyAssignment */ && isDestructuringAssignmentTarget(node.parent.parent); + return isDestructuringDefaultAssignment ? + getTypeWithDefault(getAssignedType(node), node.right) : + getTypeOfExpression(node.right); + } + function isDestructuringAssignmentTarget(parent) { + return parent.parent.kind === 209 /* BinaryExpression */ && parent.parent.left === parent || + parent.parent.kind === 232 /* ForOfStatement */ && parent.parent.initializer === parent; + } + function getAssignedTypeOfArrayLiteralElement(node, element) { + return getTypeOfDestructuredArrayElement(getAssignedType(node), node.elements.indexOf(element)); + } + function getAssignedTypeOfSpreadExpression(node) { + return getTypeOfDestructuredSpreadExpression(getAssignedType(node.parent)); + } + function getAssignedTypeOfPropertyAssignment(node) { + return getTypeOfDestructuredProperty(getAssignedType(node.parent), node.name); + } + function getAssignedTypeOfShorthandPropertyAssignment(node) { + return getTypeWithDefault(getAssignedTypeOfPropertyAssignment(node), node.objectAssignmentInitializer); + } + function getAssignedType(node) { + var parent = node.parent; + switch (parent.kind) { + case 231 /* ForInStatement */: + return stringType; + case 232 /* ForOfStatement */: + return checkRightHandSideOfForOf(parent) || errorType; + case 209 /* BinaryExpression */: + return getAssignedTypeOfBinaryExpression(parent); + case 203 /* DeleteExpression */: + return undefinedType; + case 192 /* ArrayLiteralExpression */: + return getAssignedTypeOfArrayLiteralElement(parent, node); + case 213 /* SpreadElement */: + return getAssignedTypeOfSpreadExpression(parent); + case 281 /* PropertyAssignment */: + return getAssignedTypeOfPropertyAssignment(parent); + case 282 /* ShorthandPropertyAssignment */: + return getAssignedTypeOfShorthandPropertyAssignment(parent); + } + return errorType; + } + function getInitialTypeOfBindingElement(node) { + var pattern = node.parent; + var parentType = getInitialType(pattern.parent); + var type = pattern.kind === 189 /* ObjectBindingPattern */ ? + getTypeOfDestructuredProperty(parentType, node.propertyName || node.name) : + !node.dotDotDotToken ? + getTypeOfDestructuredArrayElement(parentType, pattern.elements.indexOf(node)) : + getTypeOfDestructuredSpreadExpression(parentType); + return getTypeWithDefault(type, node.initializer); + } + function getTypeOfInitializer(node) { + // Return the cached type if one is available. If the type of the variable was inferred + // from its initializer, we'll already have cached the type. Otherwise we compute it now + // without caching such that transient types are reflected. + var links = getNodeLinks(node); + return links.resolvedType || getTypeOfExpression(node); + } + function getInitialTypeOfVariableDeclaration(node) { + if (node.initializer) { + return getTypeOfInitializer(node.initializer); + } + if (node.parent.parent.kind === 231 /* ForInStatement */) { + return stringType; + } + if (node.parent.parent.kind === 232 /* ForOfStatement */) { + return checkRightHandSideOfForOf(node.parent.parent) || errorType; + } + return errorType; + } + function getInitialType(node) { + return node.kind === 242 /* VariableDeclaration */ ? + getInitialTypeOfVariableDeclaration(node) : + getInitialTypeOfBindingElement(node); + } + function isEmptyArrayAssignment(node) { + return node.kind === 242 /* VariableDeclaration */ && node.initializer && + isEmptyArrayLiteral(node.initializer) || + node.kind !== 191 /* BindingElement */ && node.parent.kind === 209 /* BinaryExpression */ && + isEmptyArrayLiteral(node.parent.right); + } + function getReferenceCandidate(node) { + switch (node.kind) { + case 200 /* ParenthesizedExpression */: + return getReferenceCandidate(node.expression); + case 209 /* BinaryExpression */: + switch (node.operatorToken.kind) { + case 62 /* EqualsToken */: + return getReferenceCandidate(node.left); + case 27 /* CommaToken */: + return getReferenceCandidate(node.right); + } + } + return node; + } + function getReferenceRoot(node) { + var parent = node.parent; + return parent.kind === 200 /* ParenthesizedExpression */ || + parent.kind === 209 /* BinaryExpression */ && parent.operatorToken.kind === 62 /* EqualsToken */ && parent.left === node || + parent.kind === 209 /* BinaryExpression */ && parent.operatorToken.kind === 27 /* CommaToken */ && parent.right === node ? + getReferenceRoot(parent) : node; + } + function getTypeOfSwitchClause(clause) { + if (clause.kind === 277 /* CaseClause */) { + return getRegularTypeOfLiteralType(getTypeOfExpression(clause.expression)); + } + return neverType; + } + function getSwitchClauseTypes(switchStatement) { + var links = getNodeLinks(switchStatement); + if (!links.switchTypes) { + links.switchTypes = []; + for (var _i = 0, _a = switchStatement.caseBlock.clauses; _i < _a.length; _i++) { + var clause = _a[_i]; + links.switchTypes.push(getTypeOfSwitchClause(clause)); + } + } + return links.switchTypes; + } + function getSwitchClauseTypeOfWitnesses(switchStatement, retainDefault) { + var witnesses = []; + for (var _i = 0, _a = switchStatement.caseBlock.clauses; _i < _a.length; _i++) { + var clause = _a[_i]; + if (clause.kind === 277 /* CaseClause */) { + if (ts.isStringLiteralLike(clause.expression)) { + witnesses.push(clause.expression.text); + continue; + } + return ts.emptyArray; + } + if (retainDefault) + witnesses.push(/*explicitDefaultStatement*/ undefined); + } + return witnesses; + } + function eachTypeContainedIn(source, types) { + return source.flags & 1048576 /* Union */ ? !ts.forEach(source.types, function (t) { return !ts.contains(types, t); }) : ts.contains(types, source); + } + function isTypeSubsetOf(source, target) { + return source === target || target.flags & 1048576 /* Union */ && isTypeSubsetOfUnion(source, target); + } + function isTypeSubsetOfUnion(source, target) { + if (source.flags & 1048576 /* Union */) { + for (var _i = 0, _a = source.types; _i < _a.length; _i++) { + var t = _a[_i]; + if (!containsType(target.types, t)) { + return false; + } + } + return true; + } + if (source.flags & 1024 /* EnumLiteral */ && getBaseTypeOfEnumLiteralType(source) === target) { + return true; + } + return containsType(target.types, source); + } + function forEachType(type, f) { + return type.flags & 1048576 /* Union */ ? ts.forEach(type.types, f) : f(type); + } + function everyType(type, f) { + return type.flags & 1048576 /* Union */ ? ts.every(type.types, f) : f(type); + } + function filterType(type, f) { + if (type.flags & 1048576 /* Union */) { + var types = type.types; + var filtered = ts.filter(types, f); + return filtered === types ? type : getUnionTypeFromSortedList(filtered, type.objectFlags); + } + return type.flags & 131072 /* Never */ || f(type) ? type : neverType; + } + function countTypes(type) { + return type.flags & 1048576 /* Union */ ? type.types.length : 1; + } + function mapType(type, mapper, noReductions) { + if (type.flags & 131072 /* Never */) { + return type; + } + if (!(type.flags & 1048576 /* Union */)) { + return mapper(type); + } + var mappedTypes; + for (var _i = 0, _a = type.types; _i < _a.length; _i++) { + var t = _a[_i]; + var mapped = mapper(t); + if (mapped) { + if (!mappedTypes) { + mappedTypes = [mapped]; + } + else { + mappedTypes.push(mapped); + } + } + } + return mappedTypes && getUnionType(mappedTypes, noReductions ? 0 /* None */ : 1 /* Literal */); + } + function extractTypesOfKind(type, kind) { + return filterType(type, function (t) { return (t.flags & kind) !== 0; }); + } + // Return a new type in which occurrences of the string and number primitive types in + // typeWithPrimitives have been replaced with occurrences of string literals and numeric + // literals in typeWithLiterals, respectively. + function replacePrimitivesWithLiterals(typeWithPrimitives, typeWithLiterals) { + if (isTypeSubsetOf(stringType, typeWithPrimitives) && maybeTypeOfKind(typeWithLiterals, 128 /* StringLiteral */) || + isTypeSubsetOf(numberType, typeWithPrimitives) && maybeTypeOfKind(typeWithLiterals, 256 /* NumberLiteral */) || + isTypeSubsetOf(bigintType, typeWithPrimitives) && maybeTypeOfKind(typeWithLiterals, 2048 /* BigIntLiteral */)) { + return mapType(typeWithPrimitives, function (t) { + return t.flags & 4 /* String */ ? extractTypesOfKind(typeWithLiterals, 4 /* String */ | 128 /* StringLiteral */) : + t.flags & 8 /* Number */ ? extractTypesOfKind(typeWithLiterals, 8 /* Number */ | 256 /* NumberLiteral */) : + t.flags & 64 /* BigInt */ ? extractTypesOfKind(typeWithLiterals, 64 /* BigInt */ | 2048 /* BigIntLiteral */) : t; + }); + } + return typeWithPrimitives; + } + function isIncomplete(flowType) { + return flowType.flags === 0; + } + function getTypeFromFlowType(flowType) { + return flowType.flags === 0 ? flowType.type : flowType; + } + function createFlowType(type, incomplete) { + return incomplete ? { flags: 0, type: type } : type; + } + // An evolving array type tracks the element types that have so far been seen in an + // 'x.push(value)' or 'x[n] = value' operation along the control flow graph. Evolving + // array types are ultimately converted into manifest array types (using getFinalArrayType) + // and never escape the getFlowTypeOfReference function. + function createEvolvingArrayType(elementType) { + var result = createObjectType(256 /* EvolvingArray */); + result.elementType = elementType; + return result; + } + function getEvolvingArrayType(elementType) { + return evolvingArrayTypes[elementType.id] || (evolvingArrayTypes[elementType.id] = createEvolvingArrayType(elementType)); + } + // When adding evolving array element types we do not perform subtype reduction. Instead, + // we defer subtype reduction until the evolving array type is finalized into a manifest + // array type. + function addEvolvingArrayElementType(evolvingArrayType, node) { + var elementType = getBaseTypeOfLiteralType(getContextFreeTypeOfExpression(node)); + return isTypeSubsetOf(elementType, evolvingArrayType.elementType) ? evolvingArrayType : getEvolvingArrayType(getUnionType([evolvingArrayType.elementType, elementType])); + } + function createFinalArrayType(elementType) { + return elementType.flags & 131072 /* Never */ ? + autoArrayType : + createArrayType(elementType.flags & 1048576 /* Union */ ? + getUnionType(elementType.types, 2 /* Subtype */) : + elementType); + } + // We perform subtype reduction upon obtaining the final array type from an evolving array type. + function getFinalArrayType(evolvingArrayType) { + return evolvingArrayType.finalArrayType || (evolvingArrayType.finalArrayType = createFinalArrayType(evolvingArrayType.elementType)); + } + function finalizeEvolvingArrayType(type) { + return ts.getObjectFlags(type) & 256 /* EvolvingArray */ ? getFinalArrayType(type) : type; + } + function getElementTypeOfEvolvingArrayType(type) { + return ts.getObjectFlags(type) & 256 /* EvolvingArray */ ? type.elementType : neverType; + } + function isEvolvingArrayTypeList(types) { + var hasEvolvingArrayType = false; + for (var _i = 0, types_16 = types; _i < types_16.length; _i++) { + var t = types_16[_i]; + if (!(t.flags & 131072 /* Never */)) { + if (!(ts.getObjectFlags(t) & 256 /* EvolvingArray */)) { + return false; + } + hasEvolvingArrayType = true; + } + } + return hasEvolvingArrayType; + } + // At flow control branch or loop junctions, if the type along every antecedent code path + // is an evolving array type, we construct a combined evolving array type. Otherwise we + // finalize all evolving array types. + function getUnionOrEvolvingArrayType(types, subtypeReduction) { + return isEvolvingArrayTypeList(types) ? + getEvolvingArrayType(getUnionType(ts.map(types, getElementTypeOfEvolvingArrayType))) : + getUnionType(ts.sameMap(types, finalizeEvolvingArrayType), subtypeReduction); + } + // Return true if the given node is 'x' in an 'x.length', x.push(value)', 'x.unshift(value)' or + // 'x[n] = value' operation, where 'n' is an expression of type any, undefined, or a number-like type. + function isEvolvingArrayOperationTarget(node) { + var root = getReferenceRoot(node); + var parent = root.parent; + var isLengthPushOrUnshift = ts.isPropertyAccessExpression(parent) && (parent.name.escapedText === "length" || + parent.parent.kind === 196 /* CallExpression */ + && ts.isIdentifier(parent.name) + && ts.isPushOrUnshiftIdentifier(parent.name)); + var isElementAssignment = parent.kind === 195 /* ElementAccessExpression */ && + parent.expression === root && + parent.parent.kind === 209 /* BinaryExpression */ && + parent.parent.operatorToken.kind === 62 /* EqualsToken */ && + parent.parent.left === parent && + !ts.isAssignmentTarget(parent.parent) && + isTypeAssignableToKind(getTypeOfExpression(parent.argumentExpression), 296 /* NumberLike */); + return isLengthPushOrUnshift || isElementAssignment; + } + function isDeclarationWithExplicitTypeAnnotation(declaration) { + return (declaration.kind === 242 /* VariableDeclaration */ || declaration.kind === 156 /* Parameter */ || + declaration.kind === 159 /* PropertyDeclaration */ || declaration.kind === 158 /* PropertySignature */) && + !!ts.getEffectiveTypeAnnotationNode(declaration); + } + function getExplicitTypeOfSymbol(symbol, diagnostic) { + if (symbol.flags & (16 /* Function */ | 8192 /* Method */ | 32 /* Class */ | 512 /* ValueModule */)) { + return getTypeOfSymbol(symbol); + } + if (symbol.flags & (3 /* Variable */ | 4 /* Property */)) { + var declaration = symbol.valueDeclaration; + if (declaration) { + if (isDeclarationWithExplicitTypeAnnotation(declaration)) { + return getTypeOfSymbol(symbol); + } + if (ts.isVariableDeclaration(declaration) && declaration.parent.parent.kind === 232 /* ForOfStatement */) { + var statement = declaration.parent.parent; + var expressionType = getTypeOfDottedName(statement.expression, /*diagnostic*/ undefined); + if (expressionType) { + var use = statement.awaitModifier ? 15 /* ForAwaitOf */ : 13 /* ForOf */; + return checkIteratedTypeOrElementType(use, expressionType, undefinedType, /*errorNode*/ undefined); + } + } + if (diagnostic) { + ts.addRelatedInfo(diagnostic, ts.createDiagnosticForNode(declaration, ts.Diagnostics._0_needs_an_explicit_type_annotation, symbolToString(symbol))); + } + } + } + } + // We require the dotted function name in an assertion expression to be comprised of identifiers + // that reference function, method, class or value module symbols; or variable, property or + // parameter symbols with declarations that have explicit type annotations. Such references are + // resolvable with no possibility of triggering circularities in control flow analysis. + function getTypeOfDottedName(node, diagnostic) { + if (!(node.flags & 16777216 /* InWithStatement */)) { + switch (node.kind) { + case 75 /* Identifier */: + var symbol = getExportSymbolOfValueSymbolIfExported(getResolvedSymbol(node)); + return getExplicitTypeOfSymbol(symbol.flags & 2097152 /* Alias */ ? resolveAlias(symbol) : symbol, diagnostic); + case 104 /* ThisKeyword */: + return getExplicitThisType(node); + case 102 /* SuperKeyword */: + return checkSuperExpression(node); + case 194 /* PropertyAccessExpression */: + var type = getTypeOfDottedName(node.expression, diagnostic); + var prop = type && getPropertyOfType(type, node.name.escapedText); + return prop && getExplicitTypeOfSymbol(prop, diagnostic); + case 200 /* ParenthesizedExpression */: + return getTypeOfDottedName(node.expression, diagnostic); + } + } + } + function getEffectsSignature(node) { + var links = getNodeLinks(node); + var signature = links.effectsSignature; + if (signature === undefined) { + // A call expression parented by an expression statement is a potential assertion. Other call + // expressions are potential type predicate function calls. In order to avoid triggering + // circularities in control flow analysis, we use getTypeOfDottedName when resolving the call + // target expression of an assertion. + var funcType = void 0; + if (node.parent.kind === 226 /* ExpressionStatement */) { + funcType = getTypeOfDottedName(node.expression, /*diagnostic*/ undefined); + } + else if (node.expression.kind !== 102 /* SuperKeyword */) { + if (ts.isOptionalChain(node)) { + funcType = checkNonNullType(getOptionalExpressionType(checkExpression(node.expression), node.expression), node.expression); + } + else { + funcType = checkNonNullExpression(node.expression); + } + } + var signatures = getSignaturesOfType(funcType && getApparentType(funcType) || unknownType, 0 /* Call */); + var candidate = signatures.length === 1 && !signatures[0].typeParameters ? signatures[0] : + ts.some(signatures, hasTypePredicateOrNeverReturnType) ? getResolvedSignature(node) : + undefined; + signature = links.effectsSignature = candidate && hasTypePredicateOrNeverReturnType(candidate) ? candidate : unknownSignature; + } + return signature === unknownSignature ? undefined : signature; + } + function hasTypePredicateOrNeverReturnType(signature) { + return !!(getTypePredicateOfSignature(signature) || + signature.declaration && (getReturnTypeFromAnnotation(signature.declaration) || unknownType).flags & 131072 /* Never */); + } + function getTypePredicateArgument(predicate, callExpression) { + if (predicate.kind === 1 /* Identifier */ || predicate.kind === 3 /* AssertsIdentifier */) { + return callExpression.arguments[predicate.parameterIndex]; + } + var invokedExpression = ts.skipParentheses(callExpression.expression); + return ts.isAccessExpression(invokedExpression) ? ts.skipParentheses(invokedExpression.expression) : undefined; + } + function reportFlowControlError(node) { + var block = ts.findAncestor(node, ts.isFunctionOrModuleBlock); + var sourceFile = ts.getSourceFileOfNode(node); + var span = ts.getSpanOfTokenAtPosition(sourceFile, block.statements.pos); + diagnostics.add(ts.createFileDiagnostic(sourceFile, span.start, span.length, ts.Diagnostics.The_containing_function_or_module_body_is_too_large_for_control_flow_analysis)); + } + function isReachableFlowNode(flow) { + var result = isReachableFlowNodeWorker(flow, /*noCacheCheck*/ false); + lastFlowNode = flow; + lastFlowNodeReachable = result; + return result; + } + function isFalseExpression(expr) { + var node = ts.skipParentheses(expr); + return node.kind === 91 /* FalseKeyword */ || node.kind === 209 /* BinaryExpression */ && (node.operatorToken.kind === 55 /* AmpersandAmpersandToken */ && (isFalseExpression(node.left) || isFalseExpression(node.right)) || + node.operatorToken.kind === 56 /* BarBarToken */ && isFalseExpression(node.left) && isFalseExpression(node.right)); + } + function isReachableFlowNodeWorker(flow, noCacheCheck) { + while (true) { + if (flow === lastFlowNode) { + return lastFlowNodeReachable; + } + var flags = flow.flags; + if (flags & 4096 /* Shared */) { + if (!noCacheCheck) { + var id = getFlowNodeId(flow); + var reachable = flowNodeReachable[id]; + return reachable !== undefined ? reachable : (flowNodeReachable[id] = isReachableFlowNodeWorker(flow, /*noCacheCheck*/ true)); + } + noCacheCheck = false; + } + if (flags & (16 /* Assignment */ | 96 /* Condition */ | 256 /* ArrayMutation */)) { + flow = flow.antecedent; + } + else if (flags & 512 /* Call */) { + var signature = getEffectsSignature(flow.node); + if (signature) { + var predicate = getTypePredicateOfSignature(signature); + if (predicate && predicate.kind === 3 /* AssertsIdentifier */) { + var predicateArgument = flow.node.arguments[predicate.parameterIndex]; + if (predicateArgument && isFalseExpression(predicateArgument)) { + return false; + } + } + if (getReturnTypeOfSignature(signature).flags & 131072 /* Never */) { + return false; + } + } + flow = flow.antecedent; + } + else if (flags & 4 /* BranchLabel */) { + // A branching point is reachable if any branch is reachable. + return ts.some(flow.antecedents, function (f) { return isReachableFlowNodeWorker(f, /*noCacheCheck*/ false); }); + } + else if (flags & 8 /* LoopLabel */) { + // A loop is reachable if the control flow path that leads to the top is reachable. + flow = flow.antecedents[0]; + } + else if (flags & 128 /* SwitchClause */) { + // The control flow path representing an unmatched value in a switch statement with + // no default clause is unreachable if the switch statement is exhaustive. + if (flow.clauseStart === flow.clauseEnd && isExhaustiveSwitchStatement(flow.switchStatement)) { + return false; + } + flow = flow.antecedent; + } + else if (flags & 1024 /* ReduceLabel */) { + // Cache is unreliable once we start adjusting labels + lastFlowNode = undefined; + var target = flow.target; + var saveAntecedents = target.antecedents; + target.antecedents = flow.antecedents; + var result = isReachableFlowNodeWorker(flow.antecedent, /*noCacheCheck*/ false); + target.antecedents = saveAntecedents; + return result; + } + else { + return !(flags & 1 /* Unreachable */); + } + } + } + function getFlowTypeOfReference(reference, declaredType, initialType, flowContainer, couldBeUninitialized) { + if (initialType === void 0) { initialType = declaredType; } + var key; + var keySet = false; + var flowDepth = 0; + if (flowAnalysisDisabled) { + return errorType; + } + if (!reference.flowNode || !couldBeUninitialized && !(declaredType.flags & 133970943 /* Narrowable */)) { + return declaredType; + } + flowInvocationCount++; + var sharedFlowStart = sharedFlowCount; + var evolvedType = getTypeFromFlowType(getTypeAtFlowNode(reference.flowNode)); + sharedFlowCount = sharedFlowStart; + // When the reference is 'x' in an 'x.length', 'x.push(value)', 'x.unshift(value)' or x[n] = value' operation, + // we give type 'any[]' to 'x' instead of using the type determined by control flow analysis such that operations + // on empty arrays are possible without implicit any errors and new element types can be inferred without + // type mismatch errors. + var resultType = ts.getObjectFlags(evolvedType) & 256 /* EvolvingArray */ && isEvolvingArrayOperationTarget(reference) ? autoArrayType : finalizeEvolvingArrayType(evolvedType); + if (resultType === unreachableNeverType || reference.parent && reference.parent.kind === 218 /* NonNullExpression */ && getTypeWithFacts(resultType, 2097152 /* NEUndefinedOrNull */).flags & 131072 /* Never */) { + return declaredType; + } + return resultType; + function getOrSetCacheKey() { + if (keySet) { + return key; + } + keySet = true; + return key = getFlowCacheKey(reference, declaredType, initialType, flowContainer); + } + function getTypeAtFlowNode(flow) { + if (flowDepth === 2000) { + // We have made 2000 recursive invocations. To avoid overflowing the call stack we report an error + // and disable further control flow analysis in the containing function or module body. + flowAnalysisDisabled = true; + reportFlowControlError(reference); + return errorType; + } + flowDepth++; + while (true) { + var flags = flow.flags; + if (flags & 4096 /* Shared */) { + // We cache results of flow type resolution for shared nodes that were previously visited in + // the same getFlowTypeOfReference invocation. A node is considered shared when it is the + // antecedent of more than one node. + for (var i = sharedFlowStart; i < sharedFlowCount; i++) { + if (sharedFlowNodes[i] === flow) { + flowDepth--; + return sharedFlowTypes[i]; + } + } + } + var type = void 0; + if (flags & 16 /* Assignment */) { + type = getTypeAtFlowAssignment(flow); + if (!type) { + flow = flow.antecedent; + continue; + } + } + else if (flags & 512 /* Call */) { + type = getTypeAtFlowCall(flow); + if (!type) { + flow = flow.antecedent; + continue; + } + } + else if (flags & 96 /* Condition */) { + type = getTypeAtFlowCondition(flow); + } + else if (flags & 128 /* SwitchClause */) { + type = getTypeAtSwitchClause(flow); + } + else if (flags & 12 /* Label */) { + if (flow.antecedents.length === 1) { + flow = flow.antecedents[0]; + continue; + } + type = flags & 4 /* BranchLabel */ ? + getTypeAtFlowBranchLabel(flow) : + getTypeAtFlowLoopLabel(flow); + } + else if (flags & 256 /* ArrayMutation */) { + type = getTypeAtFlowArrayMutation(flow); + if (!type) { + flow = flow.antecedent; + continue; + } + } + else if (flags & 1024 /* ReduceLabel */) { + var target = flow.target; + var saveAntecedents = target.antecedents; + target.antecedents = flow.antecedents; + type = getTypeAtFlowNode(flow.antecedent); + target.antecedents = saveAntecedents; + } + else if (flags & 2 /* Start */) { + // Check if we should continue with the control flow of the containing function. + var container = flow.node; + if (container && container !== flowContainer && + reference.kind !== 194 /* PropertyAccessExpression */ && + reference.kind !== 195 /* ElementAccessExpression */ && + reference.kind !== 104 /* ThisKeyword */) { + flow = container.flowNode; + continue; + } + // At the top of the flow we have the initial type. + type = initialType; + } + else { + // Unreachable code errors are reported in the binding phase. Here we + // simply return the non-auto declared type to reduce follow-on errors. + type = convertAutoToAny(declaredType); + } + if (flags & 4096 /* Shared */) { + // Record visited node and the associated type in the cache. + sharedFlowNodes[sharedFlowCount] = flow; + sharedFlowTypes[sharedFlowCount] = type; + sharedFlowCount++; + } + flowDepth--; + return type; + } + } + function getInitialOrAssignedType(flow) { + var node = flow.node; + return getConstraintForLocation(node.kind === 242 /* VariableDeclaration */ || node.kind === 191 /* BindingElement */ ? + getInitialType(node) : + getAssignedType(node), reference); + } + function getTypeAtFlowAssignment(flow) { + var node = flow.node; + // Assignments only narrow the computed type if the declared type is a union type. Thus, we + // only need to evaluate the assigned type if the declared type is a union type. + if (isMatchingReference(reference, node)) { + if (!isReachableFlowNode(flow)) { + return unreachableNeverType; + } + if (ts.getAssignmentTargetKind(node) === 2 /* Compound */) { + var flowType = getTypeAtFlowNode(flow.antecedent); + return createFlowType(getBaseTypeOfLiteralType(getTypeFromFlowType(flowType)), isIncomplete(flowType)); + } + if (declaredType === autoType || declaredType === autoArrayType) { + if (isEmptyArrayAssignment(node)) { + return getEvolvingArrayType(neverType); + } + var assignedType = getBaseTypeOfLiteralType(getInitialOrAssignedType(flow)); + return isTypeAssignableTo(assignedType, declaredType) ? assignedType : anyArrayType; + } + if (declaredType.flags & 1048576 /* Union */) { + return getAssignmentReducedType(declaredType, getInitialOrAssignedType(flow)); + } + return declaredType; + } + // We didn't have a direct match. However, if the reference is a dotted name, this + // may be an assignment to a left hand part of the reference. For example, for a + // reference 'x.y.z', we may be at an assignment to 'x.y' or 'x'. In that case, + // return the declared type. + if (containsMatchingReference(reference, node)) { + if (!isReachableFlowNode(flow)) { + return unreachableNeverType; + } + // A matching dotted name might also be an expando property on a function *expression*, + // in which case we continue control flow analysis back to the function's declaration + if (ts.isVariableDeclaration(node) && (ts.isInJSFile(node) || ts.isVarConst(node))) { + var init = ts.getDeclaredExpandoInitializer(node); + if (init && (init.kind === 201 /* FunctionExpression */ || init.kind === 202 /* ArrowFunction */)) { + return getTypeAtFlowNode(flow.antecedent); + } + } + return declaredType; + } + // for (const _ in ref) acts as a nonnull on ref + if (ts.isVariableDeclaration(node) && node.parent.parent.kind === 231 /* ForInStatement */ && isMatchingReference(reference, node.parent.parent.expression)) { + return getNonNullableTypeIfNeeded(getTypeFromFlowType(getTypeAtFlowNode(flow.antecedent))); + } + // Assignment doesn't affect reference + return undefined; + } + function narrowTypeByAssertion(type, expr) { + var node = ts.skipParentheses(expr); + if (node.kind === 91 /* FalseKeyword */) { + return unreachableNeverType; + } + if (node.kind === 209 /* BinaryExpression */) { + if (node.operatorToken.kind === 55 /* AmpersandAmpersandToken */) { + return narrowTypeByAssertion(narrowTypeByAssertion(type, node.left), node.right); + } + if (node.operatorToken.kind === 56 /* BarBarToken */) { + return getUnionType([narrowTypeByAssertion(type, node.left), narrowTypeByAssertion(type, node.right)]); + } + } + return narrowType(type, node, /*assumeTrue*/ true); + } + function getTypeAtFlowCall(flow) { + var signature = getEffectsSignature(flow.node); + if (signature) { + var predicate = getTypePredicateOfSignature(signature); + if (predicate && (predicate.kind === 2 /* AssertsThis */ || predicate.kind === 3 /* AssertsIdentifier */)) { + var flowType = getTypeAtFlowNode(flow.antecedent); + var type = finalizeEvolvingArrayType(getTypeFromFlowType(flowType)); + var narrowedType = predicate.type ? narrowTypeByTypePredicate(type, predicate, flow.node, /*assumeTrue*/ true) : + predicate.kind === 3 /* AssertsIdentifier */ && predicate.parameterIndex >= 0 && predicate.parameterIndex < flow.node.arguments.length ? narrowTypeByAssertion(type, flow.node.arguments[predicate.parameterIndex]) : + type; + return narrowedType === type ? flowType : createFlowType(narrowedType, isIncomplete(flowType)); + } + if (getReturnTypeOfSignature(signature).flags & 131072 /* Never */) { + return unreachableNeverType; + } + } + return undefined; + } + function getTypeAtFlowArrayMutation(flow) { + if (declaredType === autoType || declaredType === autoArrayType) { + var node = flow.node; + var expr = node.kind === 196 /* CallExpression */ ? + node.expression.expression : + node.left.expression; + if (isMatchingReference(reference, getReferenceCandidate(expr))) { + var flowType = getTypeAtFlowNode(flow.antecedent); + var type = getTypeFromFlowType(flowType); + if (ts.getObjectFlags(type) & 256 /* EvolvingArray */) { + var evolvedType_1 = type; + if (node.kind === 196 /* CallExpression */) { + for (var _i = 0, _a = node.arguments; _i < _a.length; _i++) { + var arg = _a[_i]; + evolvedType_1 = addEvolvingArrayElementType(evolvedType_1, arg); + } + } + else { + // We must get the context free expression type so as to not recur in an uncached fashion on the LHS (which causes exponential blowup in compile time) + var indexType = getContextFreeTypeOfExpression(node.left.argumentExpression); + if (isTypeAssignableToKind(indexType, 296 /* NumberLike */)) { + evolvedType_1 = addEvolvingArrayElementType(evolvedType_1, node.right); + } + } + return evolvedType_1 === type ? flowType : createFlowType(evolvedType_1, isIncomplete(flowType)); + } + return flowType; + } + } + return undefined; + } + function getTypeAtFlowCondition(flow) { + var flowType = getTypeAtFlowNode(flow.antecedent); + var type = getTypeFromFlowType(flowType); + if (type.flags & 131072 /* Never */) { + return flowType; + } + // If we have an antecedent type (meaning we're reachable in some way), we first + // attempt to narrow the antecedent type. If that produces the never type, and if + // the antecedent type is incomplete (i.e. a transient type in a loop), then we + // take the type guard as an indication that control *could* reach here once we + // have the complete type. We proceed by switching to the silent never type which + // doesn't report errors when operators are applied to it. Note that this is the + // *only* place a silent never type is ever generated. + var assumeTrue = (flow.flags & 32 /* TrueCondition */) !== 0; + var nonEvolvingType = finalizeEvolvingArrayType(type); + var narrowedType = narrowType(nonEvolvingType, flow.node, assumeTrue); + if (narrowedType === nonEvolvingType) { + return flowType; + } + var incomplete = isIncomplete(flowType); + var resultType = incomplete && narrowedType.flags & 131072 /* Never */ ? silentNeverType : narrowedType; + return createFlowType(resultType, incomplete); + } + function getTypeAtSwitchClause(flow) { + var expr = flow.switchStatement.expression; + var flowType = getTypeAtFlowNode(flow.antecedent); + var type = getTypeFromFlowType(flowType); + if (isMatchingReference(reference, expr)) { + type = narrowTypeBySwitchOnDiscriminant(type, flow.switchStatement, flow.clauseStart, flow.clauseEnd); + } + else if (expr.kind === 204 /* TypeOfExpression */ && isMatchingReference(reference, expr.expression)) { + type = narrowBySwitchOnTypeOf(type, flow.switchStatement, flow.clauseStart, flow.clauseEnd); + } + else { + if (strictNullChecks) { + if (optionalChainContainsReference(expr, reference)) { + type = narrowTypeBySwitchOptionalChainContainment(type, flow.switchStatement, flow.clauseStart, flow.clauseEnd, function (t) { return !(t.flags & (32768 /* Undefined */ | 131072 /* Never */)); }); + } + else if (expr.kind === 204 /* TypeOfExpression */ && optionalChainContainsReference(expr.expression, reference)) { + type = narrowTypeBySwitchOptionalChainContainment(type, flow.switchStatement, flow.clauseStart, flow.clauseEnd, function (t) { return !(t.flags & 131072 /* Never */ || t.flags & 128 /* StringLiteral */ && t.value === "undefined"); }); + } + } + if (isMatchingReferenceDiscriminant(expr, type)) { + type = narrowTypeByDiscriminant(type, expr, function (t) { return narrowTypeBySwitchOnDiscriminant(t, flow.switchStatement, flow.clauseStart, flow.clauseEnd); }); + } + } + return createFlowType(type, isIncomplete(flowType)); + } + function getTypeAtFlowBranchLabel(flow) { + var antecedentTypes = []; + var subtypeReduction = false; + var seenIncomplete = false; + var bypassFlow; + for (var _i = 0, _a = flow.antecedents; _i < _a.length; _i++) { + var antecedent = _a[_i]; + if (!bypassFlow && antecedent.flags & 128 /* SwitchClause */ && antecedent.clauseStart === antecedent.clauseEnd) { + // The antecedent is the bypass branch of a potentially exhaustive switch statement. + bypassFlow = antecedent; + continue; + } + var flowType = getTypeAtFlowNode(antecedent); + var type = getTypeFromFlowType(flowType); + // If the type at a particular antecedent path is the declared type and the + // reference is known to always be assigned (i.e. when declared and initial types + // are the same), there is no reason to process more antecedents since the only + // possible outcome is subtypes that will be removed in the final union type anyway. + if (type === declaredType && declaredType === initialType) { + return type; + } + ts.pushIfUnique(antecedentTypes, type); + // If an antecedent type is not a subset of the declared type, we need to perform + // subtype reduction. This happens when a "foreign" type is injected into the control + // flow using the instanceof operator or a user defined type predicate. + if (!isTypeSubsetOf(type, declaredType)) { + subtypeReduction = true; + } + if (isIncomplete(flowType)) { + seenIncomplete = true; + } + } + if (bypassFlow) { + var flowType = getTypeAtFlowNode(bypassFlow); + var type = getTypeFromFlowType(flowType); + // If the bypass flow contributes a type we haven't seen yet and the switch statement + // isn't exhaustive, process the bypass flow type. Since exhaustiveness checks increase + // the risk of circularities, we only want to perform them when they make a difference. + if (!ts.contains(antecedentTypes, type) && !isExhaustiveSwitchStatement(bypassFlow.switchStatement)) { + if (type === declaredType && declaredType === initialType) { + return type; + } + antecedentTypes.push(type); + if (!isTypeSubsetOf(type, declaredType)) { + subtypeReduction = true; + } + if (isIncomplete(flowType)) { + seenIncomplete = true; + } + } + } + return createFlowType(getUnionOrEvolvingArrayType(antecedentTypes, subtypeReduction ? 2 /* Subtype */ : 1 /* Literal */), seenIncomplete); + } + function getTypeAtFlowLoopLabel(flow) { + // If we have previously computed the control flow type for the reference at + // this flow loop junction, return the cached type. + var id = getFlowNodeId(flow); + var cache = flowLoopCaches[id] || (flowLoopCaches[id] = ts.createMap()); + var key = getOrSetCacheKey(); + if (!key) { + // No cache key is generated when binding patterns are in unnarrowable situations + return declaredType; + } + var cached = cache.get(key); + if (cached) { + return cached; + } + // If this flow loop junction and reference are already being processed, return + // the union of the types computed for each branch so far, marked as incomplete. + // It is possible to see an empty array in cases where loops are nested and the + // back edge of the outer loop reaches an inner loop that is already being analyzed. + // In such cases we restart the analysis of the inner loop, which will then see + // a non-empty in-process array for the outer loop and eventually terminate because + // the first antecedent of a loop junction is always the non-looping control flow + // path that leads to the top. + for (var i = flowLoopStart; i < flowLoopCount; i++) { + if (flowLoopNodes[i] === flow && flowLoopKeys[i] === key && flowLoopTypes[i].length) { + return createFlowType(getUnionOrEvolvingArrayType(flowLoopTypes[i], 1 /* Literal */), /*incomplete*/ true); + } + } + // Add the flow loop junction and reference to the in-process stack and analyze + // each antecedent code path. + var antecedentTypes = []; + var subtypeReduction = false; + var firstAntecedentType; + for (var _i = 0, _a = flow.antecedents; _i < _a.length; _i++) { + var antecedent = _a[_i]; + var flowType = void 0; + if (!firstAntecedentType) { + // The first antecedent of a loop junction is always the non-looping control + // flow path that leads to the top. + flowType = firstAntecedentType = getTypeAtFlowNode(antecedent); + } + else { + // All but the first antecedent are the looping control flow paths that lead + // back to the loop junction. We track these on the flow loop stack. + flowLoopNodes[flowLoopCount] = flow; + flowLoopKeys[flowLoopCount] = key; + flowLoopTypes[flowLoopCount] = antecedentTypes; + flowLoopCount++; + var saveFlowTypeCache = flowTypeCache; + flowTypeCache = undefined; + flowType = getTypeAtFlowNode(antecedent); + flowTypeCache = saveFlowTypeCache; + flowLoopCount--; + // If we see a value appear in the cache it is a sign that control flow analysis + // was restarted and completed by checkExpressionCached. We can simply pick up + // the resulting type and bail out. + var cached_1 = cache.get(key); + if (cached_1) { + return cached_1; + } + } + var type = getTypeFromFlowType(flowType); + ts.pushIfUnique(antecedentTypes, type); + // If an antecedent type is not a subset of the declared type, we need to perform + // subtype reduction. This happens when a "foreign" type is injected into the control + // flow using the instanceof operator or a user defined type predicate. + if (!isTypeSubsetOf(type, declaredType)) { + subtypeReduction = true; + } + // If the type at a particular antecedent path is the declared type there is no + // reason to process more antecedents since the only possible outcome is subtypes + // that will be removed in the final union type anyway. + if (type === declaredType) { + break; + } + } + // The result is incomplete if the first antecedent (the non-looping control flow path) + // is incomplete. + var result = getUnionOrEvolvingArrayType(antecedentTypes, subtypeReduction ? 2 /* Subtype */ : 1 /* Literal */); + if (isIncomplete(firstAntecedentType)) { + return createFlowType(result, /*incomplete*/ true); + } + cache.set(key, result); + return result; + } + function isMatchingReferenceDiscriminant(expr, computedType) { + if (!(computedType.flags & 1048576 /* Union */) || !ts.isAccessExpression(expr)) { + return false; + } + var name = getAccessedPropertyName(expr); + if (name === undefined) { + return false; + } + return isMatchingReference(reference, expr.expression) && isDiscriminantProperty(computedType, name); + } + function narrowTypeByDiscriminant(type, access, narrowType) { + var propName = getAccessedPropertyName(access); + if (propName === undefined) { + return type; + } + var propType = getTypeOfPropertyOfType(type, propName); + if (!propType) { + return type; + } + var narrowedPropType = narrowType(propType); + return filterType(type, function (t) { + var discriminantType = getTypeOfPropertyOrIndexSignature(t, propName); + return !(discriminantType.flags & 131072 /* Never */) && isTypeComparableTo(discriminantType, narrowedPropType); + }); + } + function narrowTypeByTruthiness(type, expr, assumeTrue) { + if (isMatchingReference(reference, expr)) { + return getTypeWithFacts(type, assumeTrue ? 4194304 /* Truthy */ : 8388608 /* Falsy */); + } + if (strictNullChecks && assumeTrue && optionalChainContainsReference(expr, reference)) { + type = getTypeWithFacts(type, 2097152 /* NEUndefinedOrNull */); + } + if (isMatchingReferenceDiscriminant(expr, declaredType)) { + return narrowTypeByDiscriminant(type, expr, function (t) { return getTypeWithFacts(t, assumeTrue ? 4194304 /* Truthy */ : 8388608 /* Falsy */); }); + } + return type; + } + function isTypePresencePossible(type, propName, assumeTrue) { + if (getIndexInfoOfType(type, 0 /* String */)) { + return true; + } + var prop = getPropertyOfType(type, propName); + if (prop) { + return prop.flags & 16777216 /* Optional */ ? true : assumeTrue; + } + return !assumeTrue; + } + function narrowByInKeyword(type, literal, assumeTrue) { + if (type.flags & (1048576 /* Union */ | 524288 /* Object */) || isThisTypeParameter(type)) { + var propName_1 = ts.escapeLeadingUnderscores(literal.text); + return filterType(type, function (t) { return isTypePresencePossible(t, propName_1, assumeTrue); }); + } + return type; + } + function narrowTypeByBinaryExpression(type, expr, assumeTrue) { + switch (expr.operatorToken.kind) { + case 62 /* EqualsToken */: + return narrowTypeByTruthiness(narrowType(type, expr.right, assumeTrue), expr.left, assumeTrue); + case 34 /* EqualsEqualsToken */: + case 35 /* ExclamationEqualsToken */: + case 36 /* EqualsEqualsEqualsToken */: + case 37 /* ExclamationEqualsEqualsToken */: + var operator_1 = expr.operatorToken.kind; + var left_1 = getReferenceCandidate(expr.left); + var right_1 = getReferenceCandidate(expr.right); + if (left_1.kind === 204 /* TypeOfExpression */ && ts.isStringLiteralLike(right_1)) { + return narrowTypeByTypeof(type, left_1, operator_1, right_1, assumeTrue); + } + if (right_1.kind === 204 /* TypeOfExpression */ && ts.isStringLiteralLike(left_1)) { + return narrowTypeByTypeof(type, right_1, operator_1, left_1, assumeTrue); + } + if (isMatchingReference(reference, left_1)) { + return narrowTypeByEquality(type, operator_1, right_1, assumeTrue); + } + if (isMatchingReference(reference, right_1)) { + return narrowTypeByEquality(type, operator_1, left_1, assumeTrue); + } + if (strictNullChecks) { + if (optionalChainContainsReference(left_1, reference)) { + type = narrowTypeByOptionalChainContainment(type, operator_1, right_1, assumeTrue); + } + else if (optionalChainContainsReference(right_1, reference)) { + type = narrowTypeByOptionalChainContainment(type, operator_1, left_1, assumeTrue); + } + } + if (isMatchingReferenceDiscriminant(left_1, declaredType)) { + return narrowTypeByDiscriminant(type, left_1, function (t) { return narrowTypeByEquality(t, operator_1, right_1, assumeTrue); }); + } + if (isMatchingReferenceDiscriminant(right_1, declaredType)) { + return narrowTypeByDiscriminant(type, right_1, function (t) { return narrowTypeByEquality(t, operator_1, left_1, assumeTrue); }); + } + if (isMatchingConstructorReference(left_1)) { + return narrowTypeByConstructor(type, operator_1, right_1, assumeTrue); + } + if (isMatchingConstructorReference(right_1)) { + return narrowTypeByConstructor(type, operator_1, left_1, assumeTrue); + } + break; + case 98 /* InstanceOfKeyword */: + return narrowTypeByInstanceof(type, expr, assumeTrue); + case 97 /* InKeyword */: + var target = getReferenceCandidate(expr.right); + if (ts.isStringLiteralLike(expr.left) && isMatchingReference(reference, target)) { + return narrowByInKeyword(type, expr.left, assumeTrue); + } + break; + case 27 /* CommaToken */: + return narrowType(type, expr.right, assumeTrue); + } + return type; + } + function narrowTypeByOptionalChainContainment(type, operator, value, assumeTrue) { + // We are in a branch of obj?.foo === value (or any one of the other equality operators). We narrow obj as follows: + // When operator is === and type of value excludes undefined, null and undefined is removed from type of obj in true branch. + // When operator is !== and type of value excludes undefined, null and undefined is removed from type of obj in false branch. + // When operator is == and type of value excludes null and undefined, null and undefined is removed from type of obj in true branch. + // When operator is != and type of value excludes null and undefined, null and undefined is removed from type of obj in false branch. + // When operator is === and type of value is undefined, null and undefined is removed from type of obj in false branch. + // When operator is !== and type of value is undefined, null and undefined is removed from type of obj in true branch. + // When operator is == and type of value is null or undefined, null and undefined is removed from type of obj in false branch. + // When operator is != and type of value is null or undefined, null and undefined is removed from type of obj in true branch. + var equalsOperator = operator === 34 /* EqualsEqualsToken */ || operator === 36 /* EqualsEqualsEqualsToken */; + var nullableFlags = operator === 34 /* EqualsEqualsToken */ || operator === 35 /* ExclamationEqualsToken */ ? 98304 /* Nullable */ : 32768 /* Undefined */; + var valueType = getTypeOfExpression(value); + // Note that we include any and unknown in the exclusion test because their domain includes null and undefined. + var removeNullable = equalsOperator !== assumeTrue && everyType(valueType, function (t) { return !!(t.flags & nullableFlags); }) || + equalsOperator === assumeTrue && everyType(valueType, function (t) { return !(t.flags & (3 /* AnyOrUnknown */ | nullableFlags)); }); + return removeNullable ? getTypeWithFacts(type, 2097152 /* NEUndefinedOrNull */) : type; + } + function narrowTypeByEquality(type, operator, value, assumeTrue) { + if (type.flags & 1 /* Any */) { + return type; + } + if (operator === 35 /* ExclamationEqualsToken */ || operator === 37 /* ExclamationEqualsEqualsToken */) { + assumeTrue = !assumeTrue; + } + var valueType = getTypeOfExpression(value); + if ((type.flags & 2 /* Unknown */) && assumeTrue && (operator === 36 /* EqualsEqualsEqualsToken */ || operator === 37 /* ExclamationEqualsEqualsToken */)) { + if (valueType.flags & (131068 /* Primitive */ | 67108864 /* NonPrimitive */)) { + return valueType; + } + if (valueType.flags & 524288 /* Object */) { + return nonPrimitiveType; + } + return type; + } + if (valueType.flags & 98304 /* Nullable */) { + if (!strictNullChecks) { + return type; + } + var doubleEquals = operator === 34 /* EqualsEqualsToken */ || operator === 35 /* ExclamationEqualsToken */; + var facts = doubleEquals ? + assumeTrue ? 262144 /* EQUndefinedOrNull */ : 2097152 /* NEUndefinedOrNull */ : + valueType.flags & 65536 /* Null */ ? + assumeTrue ? 131072 /* EQNull */ : 1048576 /* NENull */ : + assumeTrue ? 65536 /* EQUndefined */ : 524288 /* NEUndefined */; + return getTypeWithFacts(type, facts); + } + if (type.flags & 67637251 /* NotUnionOrUnit */) { + return type; + } + if (assumeTrue) { + var filterFn = operator === 34 /* EqualsEqualsToken */ ? + (function (t) { return areTypesComparable(t, valueType) || isCoercibleUnderDoubleEquals(t, valueType); }) : + function (t) { return areTypesComparable(t, valueType); }; + var narrowedType = filterType(type, filterFn); + return narrowedType.flags & 131072 /* Never */ ? type : replacePrimitivesWithLiterals(narrowedType, valueType); + } + if (isUnitType(valueType)) { + var regularType_1 = getRegularTypeOfLiteralType(valueType); + return filterType(type, function (t) { return isUnitType(t) ? !areTypesComparable(t, valueType) : getRegularTypeOfLiteralType(t) !== regularType_1; }); + } + return type; + } + function narrowTypeByTypeof(type, typeOfExpr, operator, literal, assumeTrue) { + // We have '==', '!=', '===', or !==' operator with 'typeof xxx' and string literal operands + if (operator === 35 /* ExclamationEqualsToken */ || operator === 37 /* ExclamationEqualsEqualsToken */) { + assumeTrue = !assumeTrue; + } + var target = getReferenceCandidate(typeOfExpr.expression); + if (!isMatchingReference(reference, target)) { + if (strictNullChecks && optionalChainContainsReference(target, reference) && assumeTrue === (literal.text !== "undefined")) { + return getTypeWithFacts(type, 2097152 /* NEUndefinedOrNull */); + } + return type; + } + if (type.flags & 1 /* Any */ && literal.text === "function") { + return type; + } + if (assumeTrue && type.flags & 2 /* Unknown */ && literal.text === "object") { + // The pattern x && typeof x === 'object', where x is of type unknown, narrows x to type object. We don't + // need to check for the reverse typeof x === 'object' && x since that already narrows correctly. + if (typeOfExpr.parent.parent.kind === 209 /* BinaryExpression */) { + var expr = typeOfExpr.parent.parent; + if (expr.operatorToken.kind === 55 /* AmpersandAmpersandToken */ && expr.right === typeOfExpr.parent && containsTruthyCheck(reference, expr.left)) { + return nonPrimitiveType; + } + } + return getUnionType([nonPrimitiveType, nullType]); + } + var facts = assumeTrue ? + typeofEQFacts.get(literal.text) || 128 /* TypeofEQHostObject */ : + typeofNEFacts.get(literal.text) || 32768 /* TypeofNEHostObject */; + return getTypeWithFacts(assumeTrue ? mapType(type, narrowTypeForTypeof) : type, facts); + function narrowTypeForTypeof(type) { + // We narrow a non-union type to an exact primitive type if the non-union type + // is a supertype of that primitive type. For example, type 'any' can be narrowed + // to one of the primitive types. + var targetType = literal.text === "function" ? globalFunctionType : typeofTypesByName.get(literal.text); + if (targetType) { + if (isTypeSubtypeOf(type, targetType)) { + return type; + } + if (isTypeSubtypeOf(targetType, type)) { + return targetType; + } + if (type.flags & 63176704 /* Instantiable */) { + var constraint = getBaseConstraintOfType(type) || anyType; + if (isTypeSubtypeOf(targetType, constraint)) { + return getIntersectionType([type, targetType]); + } + } + } + return type; + } + } + function narrowTypeBySwitchOptionalChainContainment(type, switchStatement, clauseStart, clauseEnd, clauseCheck) { + var everyClauseChecks = clauseStart !== clauseEnd && ts.every(getSwitchClauseTypes(switchStatement).slice(clauseStart, clauseEnd), clauseCheck); + return everyClauseChecks ? getTypeWithFacts(type, 2097152 /* NEUndefinedOrNull */) : type; + } + function narrowTypeBySwitchOnDiscriminant(type, switchStatement, clauseStart, clauseEnd) { + // We only narrow if all case expressions specify + // values with unit types, except for the case where + // `type` is unknown. In this instance we map object + // types to the nonPrimitive type and narrow with that. + var switchTypes = getSwitchClauseTypes(switchStatement); + if (!switchTypes.length) { + return type; + } + var clauseTypes = switchTypes.slice(clauseStart, clauseEnd); + var hasDefaultClause = clauseStart === clauseEnd || ts.contains(clauseTypes, neverType); + if ((type.flags & 2 /* Unknown */) && !hasDefaultClause) { + var groundClauseTypes = void 0; + for (var i = 0; i < clauseTypes.length; i += 1) { + var t = clauseTypes[i]; + if (t.flags & (131068 /* Primitive */ | 67108864 /* NonPrimitive */)) { + if (groundClauseTypes !== undefined) { + groundClauseTypes.push(t); + } + } + else if (t.flags & 524288 /* Object */) { + if (groundClauseTypes === undefined) { + groundClauseTypes = clauseTypes.slice(0, i); + } + groundClauseTypes.push(nonPrimitiveType); + } + else { + return type; + } + } + return getUnionType(groundClauseTypes === undefined ? clauseTypes : groundClauseTypes); + } + var discriminantType = getUnionType(clauseTypes); + var caseType = discriminantType.flags & 131072 /* Never */ ? neverType : + replacePrimitivesWithLiterals(filterType(type, function (t) { return areTypesComparable(discriminantType, t); }), discriminantType); + if (!hasDefaultClause) { + return caseType; + } + var defaultType = filterType(type, function (t) { return !(isUnitType(t) && ts.contains(switchTypes, getRegularTypeOfLiteralType(t))); }); + return caseType.flags & 131072 /* Never */ ? defaultType : getUnionType([caseType, defaultType]); + } + function getImpliedTypeFromTypeofCase(type, text) { + switch (text) { + case "function": + return type.flags & 1 /* Any */ ? type : globalFunctionType; + case "object": + return type.flags & 2 /* Unknown */ ? getUnionType([nonPrimitiveType, nullType]) : type; + default: + return typeofTypesByName.get(text) || type; + } + } + function narrowTypeForTypeofSwitch(candidate) { + return function (type) { + if (isTypeSubtypeOf(candidate, type)) { + return candidate; + } + if (type.flags & 63176704 /* Instantiable */) { + var constraint = getBaseConstraintOfType(type) || anyType; + if (isTypeSubtypeOf(candidate, constraint)) { + return getIntersectionType([type, candidate]); + } + } + return type; + }; + } + function narrowBySwitchOnTypeOf(type, switchStatement, clauseStart, clauseEnd) { + var switchWitnesses = getSwitchClauseTypeOfWitnesses(switchStatement, /*retainDefault*/ true); + if (!switchWitnesses.length) { + return type; + } + // Equal start and end denotes implicit fallthrough; undefined marks explicit default clause + var defaultCaseLocation = ts.findIndex(switchWitnesses, function (elem) { return elem === undefined; }); + var hasDefaultClause = clauseStart === clauseEnd || (defaultCaseLocation >= clauseStart && defaultCaseLocation < clauseEnd); + var clauseWitnesses; + var switchFacts; + if (defaultCaseLocation > -1) { + // We no longer need the undefined denoting an + // explicit default case. Remove the undefined and + // fix-up clauseStart and clauseEnd. This means + // that we don't have to worry about undefined + // in the witness array. + var witnesses = switchWitnesses.filter(function (witness) { return witness !== undefined; }); + // The adjusted clause start and end after removing the `default` statement. + var fixedClauseStart = defaultCaseLocation < clauseStart ? clauseStart - 1 : clauseStart; + var fixedClauseEnd = defaultCaseLocation < clauseEnd ? clauseEnd - 1 : clauseEnd; + clauseWitnesses = witnesses.slice(fixedClauseStart, fixedClauseEnd); + switchFacts = getFactsFromTypeofSwitch(fixedClauseStart, fixedClauseEnd, witnesses, hasDefaultClause); + } + else { + clauseWitnesses = switchWitnesses.slice(clauseStart, clauseEnd); + switchFacts = getFactsFromTypeofSwitch(clauseStart, clauseEnd, switchWitnesses, hasDefaultClause); + } + if (hasDefaultClause) { + return filterType(type, function (t) { return (getTypeFacts(t) & switchFacts) === switchFacts; }); + } + /* + The implied type is the raw type suggested by a + value being caught in this clause. + + When the clause contains a default case we ignore + the implied type and try to narrow using any facts + we can learn: see `switchFacts`. + + Example: + switch (typeof x) { + case 'number': + case 'string': break; + default: break; + case 'number': + case 'boolean': break + } + + In the first clause (case `number` and `string`) the + implied type is number | string. + + In the default clause we de not compute an implied type. + + In the third clause (case `number` and `boolean`) + the naive implied type is number | boolean, however + we use the type facts to narrow the implied type to + boolean. We know that number cannot be selected + because it is caught in the first clause. + */ + var impliedType = getTypeWithFacts(getUnionType(clauseWitnesses.map(function (text) { return getImpliedTypeFromTypeofCase(type, text); })), switchFacts); + if (impliedType.flags & 1048576 /* Union */) { + impliedType = getAssignmentReducedType(impliedType, getBaseConstraintOrType(type)); + } + return getTypeWithFacts(mapType(type, narrowTypeForTypeofSwitch(impliedType)), switchFacts); + } + function isMatchingConstructorReference(expr) { + return (ts.isPropertyAccessExpression(expr) && ts.idText(expr.name) === "constructor" || + ts.isElementAccessExpression(expr) && ts.isStringLiteralLike(expr.argumentExpression) && expr.argumentExpression.text === "constructor") && + isMatchingReference(reference, expr.expression); + } + function narrowTypeByConstructor(type, operator, identifier, assumeTrue) { + // Do not narrow when checking inequality. + if (assumeTrue ? (operator !== 34 /* EqualsEqualsToken */ && operator !== 36 /* EqualsEqualsEqualsToken */) : (operator !== 35 /* ExclamationEqualsToken */ && operator !== 37 /* ExclamationEqualsEqualsToken */)) { + return type; + } + // Get the type of the constructor identifier expression, if it is not a function then do not narrow. + var identifierType = getTypeOfExpression(identifier); + if (!isFunctionType(identifierType) && !isConstructorType(identifierType)) { + return type; + } + // Get the prototype property of the type identifier so we can find out its type. + var prototypeProperty = getPropertyOfType(identifierType, "prototype"); + if (!prototypeProperty) { + return type; + } + // Get the type of the prototype, if it is undefined, or the global `Object` or `Function` types then do not narrow. + var prototypeType = getTypeOfSymbol(prototypeProperty); + var candidate = !isTypeAny(prototypeType) ? prototypeType : undefined; + if (!candidate || candidate === globalObjectType || candidate === globalFunctionType) { + return type; + } + // If the type that is being narrowed is `any` then just return the `candidate` type since every type is a subtype of `any`. + if (isTypeAny(type)) { + return candidate; + } + // Filter out types that are not considered to be "constructed by" the `candidate` type. + return filterType(type, function (t) { return isConstructedBy(t, candidate); }); + function isConstructedBy(source, target) { + // If either the source or target type are a class type then we need to check that they are the same exact type. + // This is because you may have a class `A` that defines some set of properties, and another class `B` + // that defines the same set of properties as class `A`, in that case they are structurally the same + // type, but when you do something like `instanceOfA.constructor === B` it will return false. + if (source.flags & 524288 /* Object */ && ts.getObjectFlags(source) & 1 /* Class */ || + target.flags & 524288 /* Object */ && ts.getObjectFlags(target) & 1 /* Class */) { + return source.symbol === target.symbol; + } + // For all other types just check that the `source` type is a subtype of the `target` type. + return isTypeSubtypeOf(source, target); + } + } + function narrowTypeByInstanceof(type, expr, assumeTrue) { + var left = getReferenceCandidate(expr.left); + if (!isMatchingReference(reference, left)) { + if (assumeTrue && strictNullChecks && optionalChainContainsReference(left, reference)) { + return getTypeWithFacts(type, 2097152 /* NEUndefinedOrNull */); + } + return type; + } + // Check that right operand is a function type with a prototype property + var rightType = getTypeOfExpression(expr.right); + if (!isTypeDerivedFrom(rightType, globalFunctionType)) { + return type; + } + var targetType; + var prototypeProperty = getPropertyOfType(rightType, "prototype"); + if (prototypeProperty) { + // Target type is type of the prototype property + var prototypePropertyType = getTypeOfSymbol(prototypeProperty); + if (!isTypeAny(prototypePropertyType)) { + targetType = prototypePropertyType; + } + } + // Don't narrow from 'any' if the target type is exactly 'Object' or 'Function' + if (isTypeAny(type) && (targetType === globalObjectType || targetType === globalFunctionType)) { + return type; + } + if (!targetType) { + var constructSignatures = getSignaturesOfType(rightType, 1 /* Construct */); + targetType = constructSignatures.length ? + getUnionType(ts.map(constructSignatures, function (signature) { return getReturnTypeOfSignature(getErasedSignature(signature)); })) : + emptyObjectType; + } + return getNarrowedType(type, targetType, assumeTrue, isTypeDerivedFrom); + } + function getNarrowedType(type, candidate, assumeTrue, isRelated) { + if (!assumeTrue) { + return filterType(type, function (t) { return !isRelated(t, candidate); }); + } + // If the current type is a union type, remove all constituents that couldn't be instances of + // the candidate type. If one or more constituents remain, return a union of those. + if (type.flags & 1048576 /* Union */) { + var assignableType = filterType(type, function (t) { return isRelated(t, candidate); }); + if (!(assignableType.flags & 131072 /* Never */)) { + return assignableType; + } + } + // If the candidate type is a subtype of the target type, narrow to the candidate type. + // Otherwise, if the target type is assignable to the candidate type, keep the target type. + // Otherwise, if the candidate type is assignable to the target type, narrow to the candidate + // type. Otherwise, the types are completely unrelated, so narrow to an intersection of the + // two types. + return isTypeSubtypeOf(candidate, type) ? candidate : + isTypeAssignableTo(type, candidate) ? type : + isTypeAssignableTo(candidate, type) ? candidate : + getIntersectionType([type, candidate]); + } + function narrowTypeByCallExpression(type, callExpression, assumeTrue) { + if (hasMatchingArgument(callExpression, reference)) { + var signature = assumeTrue || !ts.isCallChain(callExpression) ? getEffectsSignature(callExpression) : undefined; + var predicate = signature && getTypePredicateOfSignature(signature); + if (predicate && (predicate.kind === 0 /* This */ || predicate.kind === 1 /* Identifier */)) { + return narrowTypeByTypePredicate(type, predicate, callExpression, assumeTrue); + } + } + return type; + } + function narrowTypeByTypePredicate(type, predicate, callExpression, assumeTrue) { + // Don't narrow from 'any' if the predicate type is exactly 'Object' or 'Function' + if (predicate.type && !(isTypeAny(type) && (predicate.type === globalObjectType || predicate.type === globalFunctionType))) { + var predicateArgument = getTypePredicateArgument(predicate, callExpression); + if (predicateArgument) { + if (isMatchingReference(reference, predicateArgument)) { + return getNarrowedType(type, predicate.type, assumeTrue, isTypeSubtypeOf); + } + if (strictNullChecks && assumeTrue && optionalChainContainsReference(predicateArgument, reference) && + !(getTypeFacts(predicate.type) & 65536 /* EQUndefined */)) { + type = getTypeWithFacts(type, 2097152 /* NEUndefinedOrNull */); + } + if (isMatchingReferenceDiscriminant(predicateArgument, declaredType)) { + return narrowTypeByDiscriminant(type, predicateArgument, function (t) { return getNarrowedType(t, predicate.type, assumeTrue, isTypeSubtypeOf); }); + } + } + } + return type; + } + // Narrow the given type based on the given expression having the assumed boolean value. The returned type + // will be a subtype or the same type as the argument. + function narrowType(type, expr, assumeTrue) { + // for `a?.b`, we emulate a synthetic `a !== null && a !== undefined` condition for `a` + if (ts.isExpressionOfOptionalChainRoot(expr) || + ts.isBinaryExpression(expr.parent) && expr.parent.operatorToken.kind === 60 /* QuestionQuestionToken */ && expr.parent.left === expr) { + return narrowTypeByOptionality(type, expr, assumeTrue); + } + switch (expr.kind) { + case 75 /* Identifier */: + case 104 /* ThisKeyword */: + case 102 /* SuperKeyword */: + case 194 /* PropertyAccessExpression */: + case 195 /* ElementAccessExpression */: + return narrowTypeByTruthiness(type, expr, assumeTrue); + case 196 /* CallExpression */: + return narrowTypeByCallExpression(type, expr, assumeTrue); + case 200 /* ParenthesizedExpression */: + return narrowType(type, expr.expression, assumeTrue); + case 209 /* BinaryExpression */: + return narrowTypeByBinaryExpression(type, expr, assumeTrue); + case 207 /* PrefixUnaryExpression */: + if (expr.operator === 53 /* ExclamationToken */) { + return narrowType(type, expr.operand, !assumeTrue); + } + break; + } + return type; + } + function narrowTypeByOptionality(type, expr, assumePresent) { + if (isMatchingReference(reference, expr)) { + return getTypeWithFacts(type, assumePresent ? 2097152 /* NEUndefinedOrNull */ : 262144 /* EQUndefinedOrNull */); + } + if (isMatchingReferenceDiscriminant(expr, declaredType)) { + return narrowTypeByDiscriminant(type, expr, function (t) { return getTypeWithFacts(t, assumePresent ? 2097152 /* NEUndefinedOrNull */ : 262144 /* EQUndefinedOrNull */); }); + } + return type; + } + } + function getTypeOfSymbolAtLocation(symbol, location) { + symbol = symbol.exportSymbol || symbol; + // If we have an identifier or a property access at the given location, if the location is + // an dotted name expression, and if the location is not an assignment target, obtain the type + // of the expression (which will reflect control flow analysis). If the expression indeed + // resolved to the given symbol, return the narrowed type. + if (location.kind === 75 /* Identifier */) { + if (ts.isRightSideOfQualifiedNameOrPropertyAccess(location)) { + location = location.parent; + } + if (ts.isExpressionNode(location) && !ts.isAssignmentTarget(location)) { + var type = getTypeOfExpression(location); + if (getExportSymbolOfValueSymbolIfExported(getNodeLinks(location).resolvedSymbol) === symbol) { + return type; + } + } + } + // The location isn't a reference to the given symbol, meaning we're being asked + // a hypothetical question of what type the symbol would have if there was a reference + // to it at the given location. Since we have no control flow information for the + // hypothetical reference (control flow information is created and attached by the + // binder), we simply return the declared type of the symbol. + return getTypeOfSymbol(symbol); + } + function getControlFlowContainer(node) { + return ts.findAncestor(node.parent, function (node) { + return ts.isFunctionLike(node) && !ts.getImmediatelyInvokedFunctionExpression(node) || + node.kind === 250 /* ModuleBlock */ || + node.kind === 290 /* SourceFile */ || + node.kind === 159 /* PropertyDeclaration */; + }); + } + // Check if a parameter is assigned anywhere within its declaring function. + function isParameterAssigned(symbol) { + var func = ts.getRootDeclaration(symbol.valueDeclaration).parent; + var links = getNodeLinks(func); + if (!(links.flags & 8388608 /* AssignmentsMarked */)) { + links.flags |= 8388608 /* AssignmentsMarked */; + if (!hasParentWithAssignmentsMarked(func)) { + markParameterAssignments(func); + } + } + return symbol.isAssigned || false; + } + function hasParentWithAssignmentsMarked(node) { + return !!ts.findAncestor(node.parent, function (node) { return ts.isFunctionLike(node) && !!(getNodeLinks(node).flags & 8388608 /* AssignmentsMarked */); }); + } + function markParameterAssignments(node) { + if (node.kind === 75 /* Identifier */) { + if (ts.isAssignmentTarget(node)) { + var symbol = getResolvedSymbol(node); + if (symbol.valueDeclaration && ts.getRootDeclaration(symbol.valueDeclaration).kind === 156 /* Parameter */) { + symbol.isAssigned = true; + } + } + } + else { + ts.forEachChild(node, markParameterAssignments); + } + } + function isConstVariable(symbol) { + return symbol.flags & 3 /* Variable */ && (getDeclarationNodeFlagsFromSymbol(symbol) & 2 /* Const */) !== 0 && getTypeOfSymbol(symbol) !== autoArrayType; + } + /** remove undefined from the annotated type of a parameter when there is an initializer (that doesn't include undefined) */ + function removeOptionalityFromDeclaredType(declaredType, declaration) { + if (pushTypeResolution(declaration.symbol, 2 /* DeclaredType */)) { + var annotationIncludesUndefined = strictNullChecks && + declaration.kind === 156 /* Parameter */ && + declaration.initializer && + getFalsyFlags(declaredType) & 32768 /* Undefined */ && + !(getFalsyFlags(checkExpression(declaration.initializer)) & 32768 /* Undefined */); + popTypeResolution(); + return annotationIncludesUndefined ? getTypeWithFacts(declaredType, 524288 /* NEUndefined */) : declaredType; + } + else { + reportCircularityError(declaration.symbol); + return declaredType; + } + } + function isConstraintPosition(node) { + var parent = node.parent; + return parent.kind === 194 /* PropertyAccessExpression */ || + parent.kind === 196 /* CallExpression */ && parent.expression === node || + parent.kind === 195 /* ElementAccessExpression */ && parent.expression === node || + parent.kind === 191 /* BindingElement */ && parent.name === node && !!parent.initializer; + } + function typeHasNullableConstraint(type) { + return type.flags & 58982400 /* InstantiableNonPrimitive */ && maybeTypeOfKind(getBaseConstraintOfType(type) || unknownType, 98304 /* Nullable */); + } + function getConstraintForLocation(type, node) { + // When a node is the left hand expression of a property access, element access, or call expression, + // and the type of the node includes type variables with constraints that are nullable, we fetch the + // apparent type of the node *before* performing control flow analysis such that narrowings apply to + // the constraint type. + if (type && isConstraintPosition(node) && forEachType(type, typeHasNullableConstraint)) { + return mapType(getWidenedType(type), getBaseConstraintOrType); + } + return type; + } + function isExportOrExportExpression(location) { + return !!ts.findAncestor(location, function (e) { return e.parent && ts.isExportAssignment(e.parent) && e.parent.expression === e && ts.isEntityNameExpression(e); }); + } + function markAliasReferenced(symbol, location) { + if (isNonLocalAlias(symbol, /*excludes*/ 111551 /* Value */) && !isInTypeQuery(location) && !getTypeOnlyAliasDeclaration(symbol)) { + if (compilerOptions.preserveConstEnums && isExportOrExportExpression(location) || !isConstEnumOrConstEnumOnlyModule(resolveAlias(symbol))) { + markAliasSymbolAsReferenced(symbol); + } + else { + markConstEnumAliasAsReferenced(symbol); + } + } + } + function checkIdentifier(node) { + var symbol = getResolvedSymbol(node); + if (symbol === unknownSymbol) { + return errorType; + } + // As noted in ECMAScript 6 language spec, arrow functions never have an arguments objects. + // Although in down-level emit of arrow function, we emit it using function expression which means that + // arguments objects will be bound to the inner object; emitting arrow function natively in ES6, arguments objects + // will be bound to non-arrow function that contain this arrow function. This results in inconsistent behavior. + // To avoid that we will give an error to users if they use arguments objects in arrow function so that they + // can explicitly bound arguments objects + if (symbol === argumentsSymbol) { + var container = ts.getContainingFunction(node); + if (languageVersion < 2 /* ES2015 */) { + if (container.kind === 202 /* ArrowFunction */) { + error(node, ts.Diagnostics.The_arguments_object_cannot_be_referenced_in_an_arrow_function_in_ES3_and_ES5_Consider_using_a_standard_function_expression); + } + else if (ts.hasModifier(container, 256 /* Async */)) { + error(node, ts.Diagnostics.The_arguments_object_cannot_be_referenced_in_an_async_function_or_method_in_ES3_and_ES5_Consider_using_a_standard_function_or_method); + } + } + getNodeLinks(container).flags |= 8192 /* CaptureArguments */; + return getTypeOfSymbol(symbol); + } + // We should only mark aliases as referenced if there isn't a local value declaration + // for the symbol. Also, don't mark any property access expression LHS - checkPropertyAccessExpression will handle that + if (!(node.parent && ts.isPropertyAccessExpression(node.parent) && node.parent.expression === node)) { + markAliasReferenced(symbol, node); + } + var localOrExportSymbol = getExportSymbolOfValueSymbolIfExported(symbol); + var declaration = localOrExportSymbol.valueDeclaration; + if (localOrExportSymbol.flags & 32 /* Class */) { + // Due to the emit for class decorators, any reference to the class from inside of the class body + // must instead be rewritten to point to a temporary variable to avoid issues with the double-bind + // behavior of class names in ES6. + if (declaration.kind === 245 /* ClassDeclaration */ + && ts.nodeIsDecorated(declaration)) { + var container = ts.getContainingClass(node); + while (container !== undefined) { + if (container === declaration && container.name !== node) { + getNodeLinks(declaration).flags |= 16777216 /* ClassWithConstructorReference */; + getNodeLinks(node).flags |= 33554432 /* ConstructorReferenceInClass */; + break; + } + container = ts.getContainingClass(container); + } + } + else if (declaration.kind === 214 /* ClassExpression */) { + // When we emit a class expression with static members that contain a reference + // to the constructor in the initializer, we will need to substitute that + // binding with an alias as the class name is not in scope. + var container = ts.getThisContainer(node, /*includeArrowFunctions*/ false); + while (container.kind !== 290 /* SourceFile */) { + if (container.parent === declaration) { + if (container.kind === 159 /* PropertyDeclaration */ && ts.hasModifier(container, 32 /* Static */)) { + getNodeLinks(declaration).flags |= 16777216 /* ClassWithConstructorReference */; + getNodeLinks(node).flags |= 33554432 /* ConstructorReferenceInClass */; + } + break; + } + container = ts.getThisContainer(container, /*includeArrowFunctions*/ false); + } + } + } + checkNestedBlockScopedBinding(node, symbol); + var type = getConstraintForLocation(getTypeOfSymbol(localOrExportSymbol), node); + var assignmentKind = ts.getAssignmentTargetKind(node); + if (assignmentKind) { + if (!(localOrExportSymbol.flags & 3 /* Variable */) && + !(ts.isInJSFile(node) && localOrExportSymbol.flags & 512 /* ValueModule */)) { + error(node, ts.Diagnostics.Cannot_assign_to_0_because_it_is_not_a_variable, symbolToString(symbol)); + return errorType; + } + if (isReadonlySymbol(localOrExportSymbol)) { + if (localOrExportSymbol.flags & 3 /* Variable */) { + error(node, ts.Diagnostics.Cannot_assign_to_0_because_it_is_a_constant, symbolToString(symbol)); + } + else { + error(node, ts.Diagnostics.Cannot_assign_to_0_because_it_is_a_read_only_property, symbolToString(symbol)); + } + return errorType; + } + } + var isAlias = localOrExportSymbol.flags & 2097152 /* Alias */; + // We only narrow variables and parameters occurring in a non-assignment position. For all other + // entities we simply return the declared type. + if (localOrExportSymbol.flags & 3 /* Variable */) { + if (assignmentKind === 1 /* Definite */) { + return type; + } + } + else if (isAlias) { + declaration = ts.find(symbol.declarations, isSomeImportDeclaration); + } + else { + return type; + } + if (!declaration) { + return type; + } + // The declaration container is the innermost function that encloses the declaration of the variable + // or parameter. The flow container is the innermost function starting with which we analyze the control + // flow graph to determine the control flow based type. + var isParameter = ts.getRootDeclaration(declaration).kind === 156 /* Parameter */; + var declarationContainer = getControlFlowContainer(declaration); + var flowContainer = getControlFlowContainer(node); + var isOuterVariable = flowContainer !== declarationContainer; + var isSpreadDestructuringAssignmentTarget = node.parent && node.parent.parent && ts.isSpreadAssignment(node.parent) && isDestructuringAssignmentTarget(node.parent.parent); + var isModuleExports = symbol.flags & 134217728 /* ModuleExports */; + // When the control flow originates in a function expression or arrow function and we are referencing + // a const variable or parameter from an outer function, we extend the origin of the control flow + // analysis to include the immediately enclosing function. + while (flowContainer !== declarationContainer && (flowContainer.kind === 201 /* FunctionExpression */ || + flowContainer.kind === 202 /* ArrowFunction */ || ts.isObjectLiteralOrClassExpressionMethod(flowContainer)) && + (isConstVariable(localOrExportSymbol) || isParameter && !isParameterAssigned(localOrExportSymbol))) { + flowContainer = getControlFlowContainer(flowContainer); + } + // We only look for uninitialized variables in strict null checking mode, and only when we can analyze + // the entire control flow graph from the variable's declaration (i.e. when the flow container and + // declaration container are the same). + var assumeInitialized = isParameter || isAlias || isOuterVariable || isSpreadDestructuringAssignmentTarget || isModuleExports || ts.isBindingElement(declaration) || + type !== autoType && type !== autoArrayType && (!strictNullChecks || (type.flags & (3 /* AnyOrUnknown */ | 16384 /* Void */)) !== 0 || + isInTypeQuery(node) || node.parent.kind === 263 /* ExportSpecifier */) || + node.parent.kind === 218 /* NonNullExpression */ || + declaration.kind === 242 /* VariableDeclaration */ && declaration.exclamationToken || + declaration.flags & 8388608 /* Ambient */; + var initialType = assumeInitialized ? (isParameter ? removeOptionalityFromDeclaredType(type, declaration) : type) : + type === autoType || type === autoArrayType ? undefinedType : + getOptionalType(type); + var flowType = getFlowTypeOfReference(node, type, initialType, flowContainer, !assumeInitialized); + // A variable is considered uninitialized when it is possible to analyze the entire control flow graph + // from declaration to use, and when the variable's declared type doesn't include undefined but the + // control flow based type does include undefined. + if (!isEvolvingArrayOperationTarget(node) && (type === autoType || type === autoArrayType)) { + if (flowType === autoType || flowType === autoArrayType) { + if (noImplicitAny) { + error(ts.getNameOfDeclaration(declaration), ts.Diagnostics.Variable_0_implicitly_has_type_1_in_some_locations_where_its_type_cannot_be_determined, symbolToString(symbol), typeToString(flowType)); + error(node, ts.Diagnostics.Variable_0_implicitly_has_an_1_type, symbolToString(symbol), typeToString(flowType)); + } + return convertAutoToAny(flowType); + } + } + else if (!assumeInitialized && !(getFalsyFlags(type) & 32768 /* Undefined */) && getFalsyFlags(flowType) & 32768 /* Undefined */) { + error(node, ts.Diagnostics.Variable_0_is_used_before_being_assigned, symbolToString(symbol)); + // Return the declared type to reduce follow-on errors + return type; + } + return assignmentKind ? getBaseTypeOfLiteralType(flowType) : flowType; + } + function isInsideFunction(node, threshold) { + return !!ts.findAncestor(node, function (n) { return n === threshold ? "quit" : ts.isFunctionLike(n); }); + } + function getPartOfForStatementContainingNode(node, container) { + return ts.findAncestor(node, function (n) { return n === container ? "quit" : n === container.initializer || n === container.condition || n === container.incrementor || n === container.statement; }); + } + function checkNestedBlockScopedBinding(node, symbol) { + if (languageVersion >= 2 /* ES2015 */ || + (symbol.flags & (2 /* BlockScopedVariable */ | 32 /* Class */)) === 0 || + ts.isSourceFile(symbol.valueDeclaration) || + symbol.valueDeclaration.parent.kind === 280 /* CatchClause */) { + return; + } + // 1. walk from the use site up to the declaration and check + // if there is anything function like between declaration and use-site (is binding/class is captured in function). + // 2. walk from the declaration up to the boundary of lexical environment and check + // if there is an iteration statement in between declaration and boundary (is binding/class declared inside iteration statement) + var container = ts.getEnclosingBlockScopeContainer(symbol.valueDeclaration); + var usedInFunction = isInsideFunction(node.parent, container); + var current = container; + var containedInIterationStatement = false; + while (current && !ts.nodeStartsNewLexicalEnvironment(current)) { + if (ts.isIterationStatement(current, /*lookInLabeledStatements*/ false)) { + containedInIterationStatement = true; + break; + } + current = current.parent; + } + if (containedInIterationStatement) { + if (usedInFunction) { + // mark iteration statement as containing block-scoped binding captured in some function + var capturesBlockScopeBindingInLoopBody = true; + if (ts.isForStatement(container)) { + var varDeclList = ts.getAncestor(symbol.valueDeclaration, 243 /* VariableDeclarationList */); + if (varDeclList && varDeclList.parent === container) { + var part = getPartOfForStatementContainingNode(node.parent, container); + if (part) { + var links = getNodeLinks(part); + links.flags |= 131072 /* ContainsCapturedBlockScopeBinding */; + var capturedBindings = links.capturedBlockScopeBindings || (links.capturedBlockScopeBindings = []); + ts.pushIfUnique(capturedBindings, symbol); + if (part === container.initializer) { + capturesBlockScopeBindingInLoopBody = false; // Initializer is outside of loop body + } + } + } + } + if (capturesBlockScopeBindingInLoopBody) { + getNodeLinks(current).flags |= 65536 /* LoopWithCapturedBlockScopedBinding */; + } + } + // mark variables that are declared in loop initializer and reassigned inside the body of ForStatement. + // if body of ForStatement will be converted to function then we'll need a extra machinery to propagate reassigned values back. + if (ts.isForStatement(container)) { + var varDeclList = ts.getAncestor(symbol.valueDeclaration, 243 /* VariableDeclarationList */); + if (varDeclList && varDeclList.parent === container && isAssignedInBodyOfForStatement(node, container)) { + getNodeLinks(symbol.valueDeclaration).flags |= 4194304 /* NeedsLoopOutParameter */; + } + } + // set 'declared inside loop' bit on the block-scoped binding + getNodeLinks(symbol.valueDeclaration).flags |= 524288 /* BlockScopedBindingInLoop */; + } + if (usedInFunction) { + getNodeLinks(symbol.valueDeclaration).flags |= 262144 /* CapturedBlockScopedBinding */; + } + } + function isBindingCapturedByNode(node, decl) { + var links = getNodeLinks(node); + return !!links && ts.contains(links.capturedBlockScopeBindings, getSymbolOfNode(decl)); + } + function isAssignedInBodyOfForStatement(node, container) { + // skip parenthesized nodes + var current = node; + while (current.parent.kind === 200 /* ParenthesizedExpression */) { + current = current.parent; + } + // check if node is used as LHS in some assignment expression + var isAssigned = false; + if (ts.isAssignmentTarget(current)) { + isAssigned = true; + } + else if ((current.parent.kind === 207 /* PrefixUnaryExpression */ || current.parent.kind === 208 /* PostfixUnaryExpression */)) { + var expr = current.parent; + isAssigned = expr.operator === 45 /* PlusPlusToken */ || expr.operator === 46 /* MinusMinusToken */; + } + if (!isAssigned) { + return false; + } + // at this point we know that node is the target of assignment + // now check that modification happens inside the statement part of the ForStatement + return !!ts.findAncestor(current, function (n) { return n === container ? "quit" : n === container.statement; }); + } + function captureLexicalThis(node, container) { + getNodeLinks(node).flags |= 2 /* LexicalThis */; + if (container.kind === 159 /* PropertyDeclaration */ || container.kind === 162 /* Constructor */) { + var classNode = container.parent; + getNodeLinks(classNode).flags |= 4 /* CaptureThis */; + } + else { + getNodeLinks(container).flags |= 4 /* CaptureThis */; + } + } + function findFirstSuperCall(n) { + if (ts.isSuperCall(n)) { + return n; + } + else if (ts.isFunctionLike(n)) { + return undefined; + } + return ts.forEachChild(n, findFirstSuperCall); + } + /** + * Return a cached result if super-statement is already found. + * Otherwise, find a super statement in a given constructor function and cache the result in the node-links of the constructor + * + * @param constructor constructor-function to look for super statement + */ + function getSuperCallInConstructor(constructor) { + var links = getNodeLinks(constructor); + // Only trying to find super-call if we haven't yet tried to find one. Once we try, we will record the result + if (links.hasSuperCall === undefined) { + links.superCall = findFirstSuperCall(constructor.body); + links.hasSuperCall = links.superCall ? true : false; + } + return links.superCall; + } + /** + * Check if the given class-declaration extends null then return true. + * Otherwise, return false + * @param classDecl a class declaration to check if it extends null + */ + function classDeclarationExtendsNull(classDecl) { + var classSymbol = getSymbolOfNode(classDecl); + var classInstanceType = getDeclaredTypeOfSymbol(classSymbol); + var baseConstructorType = getBaseConstructorTypeOfClass(classInstanceType); + return baseConstructorType === nullWideningType; + } + function checkThisBeforeSuper(node, container, diagnosticMessage) { + var containingClassDecl = container.parent; + var baseTypeNode = ts.getClassExtendsHeritageElement(containingClassDecl); + // If a containing class does not have extends clause or the class extends null + // skip checking whether super statement is called before "this" accessing. + if (baseTypeNode && !classDeclarationExtendsNull(containingClassDecl)) { + var superCall = getSuperCallInConstructor(container); + // We should give an error in the following cases: + // - No super-call + // - "this" is accessing before super-call. + // i.e super(this) + // this.x; super(); + // We want to make sure that super-call is done before accessing "this" so that + // "this" is not accessed as a parameter of the super-call. + if (!superCall || superCall.end > node.pos) { + // In ES6, super inside constructor of class-declaration has to precede "this" accessing + error(node, diagnosticMessage); + } + } + } + function checkThisExpression(node) { + // Stop at the first arrow function so that we can + // tell whether 'this' needs to be captured. + var container = ts.getThisContainer(node, /* includeArrowFunctions */ true); + var capturedByArrowFunction = false; + if (container.kind === 162 /* Constructor */) { + checkThisBeforeSuper(node, container, ts.Diagnostics.super_must_be_called_before_accessing_this_in_the_constructor_of_a_derived_class); + } + // Now skip arrow functions to get the "real" owner of 'this'. + if (container.kind === 202 /* ArrowFunction */) { + container = ts.getThisContainer(container, /* includeArrowFunctions */ false); + capturedByArrowFunction = true; + } + switch (container.kind) { + case 249 /* ModuleDeclaration */: + error(node, ts.Diagnostics.this_cannot_be_referenced_in_a_module_or_namespace_body); + // do not return here so in case if lexical this is captured - it will be reflected in flags on NodeLinks + break; + case 248 /* EnumDeclaration */: + error(node, ts.Diagnostics.this_cannot_be_referenced_in_current_location); + // do not return here so in case if lexical this is captured - it will be reflected in flags on NodeLinks + break; + case 162 /* Constructor */: + if (isInConstructorArgumentInitializer(node, container)) { + error(node, ts.Diagnostics.this_cannot_be_referenced_in_constructor_arguments); + // do not return here so in case if lexical this is captured - it will be reflected in flags on NodeLinks + } + break; + case 159 /* PropertyDeclaration */: + case 158 /* PropertySignature */: + if (ts.hasModifier(container, 32 /* Static */) && !(compilerOptions.target === 99 /* ESNext */ && compilerOptions.useDefineForClassFields)) { + error(node, ts.Diagnostics.this_cannot_be_referenced_in_a_static_property_initializer); + // do not return here so in case if lexical this is captured - it will be reflected in flags on NodeLinks + } + break; + case 154 /* ComputedPropertyName */: + error(node, ts.Diagnostics.this_cannot_be_referenced_in_a_computed_property_name); + break; + } + // When targeting es6, mark that we'll need to capture `this` in its lexically bound scope. + if (capturedByArrowFunction && languageVersion < 2 /* ES2015 */) { + captureLexicalThis(node, container); + } + var type = tryGetThisTypeAt(node, /*includeGlobalThis*/ true, container); + if (noImplicitThis) { + var globalThisType_1 = getTypeOfSymbol(globalThisSymbol); + if (type === globalThisType_1 && capturedByArrowFunction) { + error(node, ts.Diagnostics.The_containing_arrow_function_captures_the_global_value_of_this); + } + else if (!type) { + // With noImplicitThis, functions may not reference 'this' if it has type 'any' + var diag = error(node, ts.Diagnostics.this_implicitly_has_type_any_because_it_does_not_have_a_type_annotation); + if (!ts.isSourceFile(container)) { + var outsideThis = tryGetThisTypeAt(container); + if (outsideThis && outsideThis !== globalThisType_1) { + ts.addRelatedInfo(diag, ts.createDiagnosticForNode(container, ts.Diagnostics.An_outer_value_of_this_is_shadowed_by_this_container)); + } + } + } + } + return type || anyType; + } + function tryGetThisTypeAt(node, includeGlobalThis, container) { + if (includeGlobalThis === void 0) { includeGlobalThis = true; } + if (container === void 0) { container = ts.getThisContainer(node, /*includeArrowFunctions*/ false); } + var isInJS = ts.isInJSFile(node); + if (ts.isFunctionLike(container) && + (!isInParameterInitializerBeforeContainingFunction(node) || ts.getThisParameter(container))) { + // Note: a parameter initializer should refer to class-this unless function-this is explicitly annotated. + // If this is a function in a JS file, it might be a class method. + var className = getClassNameFromPrototypeMethod(container); + if (isInJS && className) { + var classSymbol = checkExpression(className).symbol; + if (classSymbol && classSymbol.members && (classSymbol.flags & 16 /* Function */)) { + var classType = getDeclaredTypeOfSymbol(classSymbol).thisType; + if (classType) { + return getFlowTypeOfReference(node, classType); + } + } + } + // Check if it's a constructor definition, can be either a variable decl or function decl + // i.e. + // * /** @constructor */ function [name]() { ... } + // * /** @constructor */ var x = function() { ... } + else if (isInJS && + (container.kind === 201 /* FunctionExpression */ || container.kind === 244 /* FunctionDeclaration */) && + ts.getJSDocClassTag(container)) { + var classType = getDeclaredTypeOfSymbol(getMergedSymbol(container.symbol)).thisType; + return getFlowTypeOfReference(node, classType); + } + var thisType = getThisTypeOfDeclaration(container) || getContextualThisParameterType(container); + if (thisType) { + return getFlowTypeOfReference(node, thisType); + } + } + if (ts.isClassLike(container.parent)) { + var symbol = getSymbolOfNode(container.parent); + var type = ts.hasModifier(container, 32 /* Static */) ? getTypeOfSymbol(symbol) : getDeclaredTypeOfSymbol(symbol).thisType; + return getFlowTypeOfReference(node, type); + } + if (isInJS) { + var type = getTypeForThisExpressionFromJSDoc(container); + if (type && type !== errorType) { + return getFlowTypeOfReference(node, type); + } + } + if (ts.isSourceFile(container)) { + // look up in the source file's locals or exports + if (container.commonJsModuleIndicator) { + var fileSymbol = getSymbolOfNode(container); + return fileSymbol && getTypeOfSymbol(fileSymbol); + } + else if (includeGlobalThis) { + return getTypeOfSymbol(globalThisSymbol); + } + } + } + function getExplicitThisType(node) { + var container = ts.getThisContainer(node, /*includeArrowFunctions*/ false); + if (ts.isFunctionLike(container)) { + var signature = getSignatureFromDeclaration(container); + if (signature.thisParameter) { + return getExplicitTypeOfSymbol(signature.thisParameter); + } + } + if (ts.isClassLike(container.parent)) { + var symbol = getSymbolOfNode(container.parent); + return ts.hasModifier(container, 32 /* Static */) ? getTypeOfSymbol(symbol) : getDeclaredTypeOfSymbol(symbol).thisType; + } + } + function getClassNameFromPrototypeMethod(container) { + // Check if it's the RHS of a x.prototype.y = function [name]() { .... } + if (container.kind === 201 /* FunctionExpression */ && + ts.isBinaryExpression(container.parent) && + ts.getAssignmentDeclarationKind(container.parent) === 3 /* PrototypeProperty */) { + // Get the 'x' of 'x.prototype.y = container' + return container.parent // x.prototype.y = container + .left // x.prototype.y + .expression // x.prototype + .expression; // x + } + // x.prototype = { method() { } } + else if (container.kind === 161 /* MethodDeclaration */ && + container.parent.kind === 193 /* ObjectLiteralExpression */ && + ts.isBinaryExpression(container.parent.parent) && + ts.getAssignmentDeclarationKind(container.parent.parent) === 6 /* Prototype */) { + return container.parent.parent.left.expression; + } + // x.prototype = { method: function() { } } + else if (container.kind === 201 /* FunctionExpression */ && + container.parent.kind === 281 /* PropertyAssignment */ && + container.parent.parent.kind === 193 /* ObjectLiteralExpression */ && + ts.isBinaryExpression(container.parent.parent.parent) && + ts.getAssignmentDeclarationKind(container.parent.parent.parent) === 6 /* Prototype */) { + return container.parent.parent.parent.left.expression; + } + // Object.defineProperty(x, "method", { value: function() { } }); + // Object.defineProperty(x, "method", { set: (x: () => void) => void }); + // Object.defineProperty(x, "method", { get: () => function() { }) }); + else if (container.kind === 201 /* FunctionExpression */ && + ts.isPropertyAssignment(container.parent) && + ts.isIdentifier(container.parent.name) && + (container.parent.name.escapedText === "value" || container.parent.name.escapedText === "get" || container.parent.name.escapedText === "set") && + ts.isObjectLiteralExpression(container.parent.parent) && + ts.isCallExpression(container.parent.parent.parent) && + container.parent.parent.parent.arguments[2] === container.parent.parent && + ts.getAssignmentDeclarationKind(container.parent.parent.parent) === 9 /* ObjectDefinePrototypeProperty */) { + return container.parent.parent.parent.arguments[0].expression; + } + // Object.defineProperty(x, "method", { value() { } }); + // Object.defineProperty(x, "method", { set(x: () => void) {} }); + // Object.defineProperty(x, "method", { get() { return () => {} } }); + else if (ts.isMethodDeclaration(container) && + ts.isIdentifier(container.name) && + (container.name.escapedText === "value" || container.name.escapedText === "get" || container.name.escapedText === "set") && + ts.isObjectLiteralExpression(container.parent) && + ts.isCallExpression(container.parent.parent) && + container.parent.parent.arguments[2] === container.parent && + ts.getAssignmentDeclarationKind(container.parent.parent) === 9 /* ObjectDefinePrototypeProperty */) { + return container.parent.parent.arguments[0].expression; + } + } + function getTypeForThisExpressionFromJSDoc(node) { + var jsdocType = ts.getJSDocType(node); + if (jsdocType && jsdocType.kind === 300 /* JSDocFunctionType */) { + var jsDocFunctionType = jsdocType; + if (jsDocFunctionType.parameters.length > 0 && + jsDocFunctionType.parameters[0].name && + jsDocFunctionType.parameters[0].name.escapedText === "this" /* This */) { + return getTypeFromTypeNode(jsDocFunctionType.parameters[0].type); + } + } + var thisTag = ts.getJSDocThisTag(node); + if (thisTag && thisTag.typeExpression) { + return getTypeFromTypeNode(thisTag.typeExpression); + } + } + function isInConstructorArgumentInitializer(node, constructorDecl) { + return !!ts.findAncestor(node, function (n) { return ts.isFunctionLikeDeclaration(n) ? "quit" : n.kind === 156 /* Parameter */ && n.parent === constructorDecl; }); + } + function checkSuperExpression(node) { + var isCallExpression = node.parent.kind === 196 /* CallExpression */ && node.parent.expression === node; + var container = ts.getSuperContainer(node, /*stopOnFunctions*/ true); + var needToCaptureLexicalThis = false; + // adjust the container reference in case if super is used inside arrow functions with arbitrarily deep nesting + if (!isCallExpression) { + while (container && container.kind === 202 /* ArrowFunction */) { + container = ts.getSuperContainer(container, /*stopOnFunctions*/ true); + needToCaptureLexicalThis = languageVersion < 2 /* ES2015 */; + } + } + var canUseSuperExpression = isLegalUsageOfSuperExpression(container); + var nodeCheckFlag = 0; + if (!canUseSuperExpression) { + // issue more specific error if super is used in computed property name + // class A { foo() { return "1" }} + // class B { + // [super.foo()]() {} + // } + var current = ts.findAncestor(node, function (n) { return n === container ? "quit" : n.kind === 154 /* ComputedPropertyName */; }); + if (current && current.kind === 154 /* ComputedPropertyName */) { + error(node, ts.Diagnostics.super_cannot_be_referenced_in_a_computed_property_name); + } + else if (isCallExpression) { + error(node, ts.Diagnostics.Super_calls_are_not_permitted_outside_constructors_or_in_nested_functions_inside_constructors); + } + else if (!container || !container.parent || !(ts.isClassLike(container.parent) || container.parent.kind === 193 /* ObjectLiteralExpression */)) { + error(node, ts.Diagnostics.super_can_only_be_referenced_in_members_of_derived_classes_or_object_literal_expressions); + } + else { + error(node, ts.Diagnostics.super_property_access_is_permitted_only_in_a_constructor_member_function_or_member_accessor_of_a_derived_class); + } + return errorType; + } + if (!isCallExpression && container.kind === 162 /* Constructor */) { + checkThisBeforeSuper(node, container, ts.Diagnostics.super_must_be_called_before_accessing_a_property_of_super_in_the_constructor_of_a_derived_class); + } + if (ts.hasModifier(container, 32 /* Static */) || isCallExpression) { + nodeCheckFlag = 512 /* SuperStatic */; + } + else { + nodeCheckFlag = 256 /* SuperInstance */; + } + getNodeLinks(node).flags |= nodeCheckFlag; + // Due to how we emit async functions, we need to specialize the emit for an async method that contains a `super` reference. + // This is due to the fact that we emit the body of an async function inside of a generator function. As generator + // functions cannot reference `super`, we emit a helper inside of the method body, but outside of the generator. This helper + // uses an arrow function, which is permitted to reference `super`. + // + // There are two primary ways we can access `super` from within an async method. The first is getting the value of a property + // or indexed access on super, either as part of a right-hand-side expression or call expression. The second is when setting the value + // of a property or indexed access, either as part of an assignment expression or destructuring assignment. + // + // The simplest case is reading a value, in which case we will emit something like the following: + // + // // ts + // ... + // async asyncMethod() { + // let x = await super.asyncMethod(); + // return x; + // } + // ... + // + // // js + // ... + // asyncMethod() { + // const _super = Object.create(null, { + // asyncMethod: { get: () => super.asyncMethod }, + // }); + // return __awaiter(this, arguments, Promise, function *() { + // let x = yield _super.asyncMethod.call(this); + // return x; + // }); + // } + // ... + // + // The more complex case is when we wish to assign a value, especially as part of a destructuring assignment. As both cases + // are legal in ES6, but also likely less frequent, we only emit setters if there is an assignment: + // + // // ts + // ... + // async asyncMethod(ar: Promise) { + // [super.a, super.b] = await ar; + // } + // ... + // + // // js + // ... + // asyncMethod(ar) { + // const _super = Object.create(null, { + // a: { get: () => super.a, set: (v) => super.a = v }, + // b: { get: () => super.b, set: (v) => super.b = v } + // }; + // return __awaiter(this, arguments, Promise, function *() { + // [_super.a, _super.b] = yield ar; + // }); + // } + // ... + // + // Creating an object that has getter and setters instead of just an accessor function is required for destructuring assignments + // as a call expression cannot be used as the target of a destructuring assignment while a property access can. + // + // For element access expressions (`super[x]`), we emit a generic helper that forwards the element access in both situations. + if (container.kind === 161 /* MethodDeclaration */ && ts.hasModifier(container, 256 /* Async */)) { + if (ts.isSuperProperty(node.parent) && ts.isAssignmentTarget(node.parent)) { + getNodeLinks(container).flags |= 4096 /* AsyncMethodWithSuperBinding */; + } + else { + getNodeLinks(container).flags |= 2048 /* AsyncMethodWithSuper */; + } + } + if (needToCaptureLexicalThis) { + // call expressions are allowed only in constructors so they should always capture correct 'this' + // super property access expressions can also appear in arrow functions - + // in this case they should also use correct lexical this + captureLexicalThis(node.parent, container); + } + if (container.parent.kind === 193 /* ObjectLiteralExpression */) { + if (languageVersion < 2 /* ES2015 */) { + error(node, ts.Diagnostics.super_is_only_allowed_in_members_of_object_literal_expressions_when_option_target_is_ES2015_or_higher); + return errorType; + } + else { + // for object literal assume that type of 'super' is 'any' + return anyType; + } + } + // at this point the only legal case for parent is ClassLikeDeclaration + var classLikeDeclaration = container.parent; + if (!ts.getClassExtendsHeritageElement(classLikeDeclaration)) { + error(node, ts.Diagnostics.super_can_only_be_referenced_in_a_derived_class); + return errorType; + } + var classType = getDeclaredTypeOfSymbol(getSymbolOfNode(classLikeDeclaration)); + var baseClassType = classType && getBaseTypes(classType)[0]; + if (!baseClassType) { + return errorType; + } + if (container.kind === 162 /* Constructor */ && isInConstructorArgumentInitializer(node, container)) { + // issue custom error message for super property access in constructor arguments (to be aligned with old compiler) + error(node, ts.Diagnostics.super_cannot_be_referenced_in_constructor_arguments); + return errorType; + } + return nodeCheckFlag === 512 /* SuperStatic */ + ? getBaseConstructorTypeOfClass(classType) + : getTypeWithThisArgument(baseClassType, classType.thisType); + function isLegalUsageOfSuperExpression(container) { + if (!container) { + return false; + } + if (isCallExpression) { + // TS 1.0 SPEC (April 2014): 4.8.1 + // Super calls are only permitted in constructors of derived classes + return container.kind === 162 /* Constructor */; + } + else { + // TS 1.0 SPEC (April 2014) + // 'super' property access is allowed + // - In a constructor, instance member function, instance member accessor, or instance member variable initializer where this references a derived class instance + // - In a static member function or static member accessor + // topmost container must be something that is directly nested in the class declaration\object literal expression + if (ts.isClassLike(container.parent) || container.parent.kind === 193 /* ObjectLiteralExpression */) { + if (ts.hasModifier(container, 32 /* Static */)) { + return container.kind === 161 /* MethodDeclaration */ || + container.kind === 160 /* MethodSignature */ || + container.kind === 163 /* GetAccessor */ || + container.kind === 164 /* SetAccessor */; + } + else { + return container.kind === 161 /* MethodDeclaration */ || + container.kind === 160 /* MethodSignature */ || + container.kind === 163 /* GetAccessor */ || + container.kind === 164 /* SetAccessor */ || + container.kind === 159 /* PropertyDeclaration */ || + container.kind === 158 /* PropertySignature */ || + container.kind === 162 /* Constructor */; + } + } + } + return false; + } + } + function getContainingObjectLiteral(func) { + return (func.kind === 161 /* MethodDeclaration */ || + func.kind === 163 /* GetAccessor */ || + func.kind === 164 /* SetAccessor */) && func.parent.kind === 193 /* ObjectLiteralExpression */ ? func.parent : + func.kind === 201 /* FunctionExpression */ && func.parent.kind === 281 /* PropertyAssignment */ ? func.parent.parent : + undefined; + } + function getThisTypeArgument(type) { + return ts.getObjectFlags(type) & 4 /* Reference */ && type.target === globalThisType ? getTypeArguments(type)[0] : undefined; + } + function getThisTypeFromContextualType(type) { + return mapType(type, function (t) { + return t.flags & 2097152 /* Intersection */ ? ts.forEach(t.types, getThisTypeArgument) : getThisTypeArgument(t); + }); + } + function getContextualThisParameterType(func) { + if (func.kind === 202 /* ArrowFunction */) { + return undefined; + } + if (isContextSensitiveFunctionOrObjectLiteralMethod(func)) { + var contextualSignature = getContextualSignature(func); + if (contextualSignature) { + var thisParameter = contextualSignature.thisParameter; + if (thisParameter) { + return getTypeOfSymbol(thisParameter); + } + } + } + var inJs = ts.isInJSFile(func); + if (noImplicitThis || inJs) { + var containingLiteral = getContainingObjectLiteral(func); + if (containingLiteral) { + // We have an object literal method. Check if the containing object literal has a contextual type + // that includes a ThisType. If so, T is the contextual type for 'this'. We continue looking in + // any directly enclosing object literals. + var contextualType = getApparentTypeOfContextualType(containingLiteral); + var literal = containingLiteral; + var type = contextualType; + while (type) { + var thisType = getThisTypeFromContextualType(type); + if (thisType) { + return instantiateType(thisType, getMapperFromContext(getInferenceContext(containingLiteral))); + } + if (literal.parent.kind !== 281 /* PropertyAssignment */) { + break; + } + literal = literal.parent.parent; + type = getApparentTypeOfContextualType(literal); + } + // There was no contextual ThisType for the containing object literal, so the contextual type + // for 'this' is the non-null form of the contextual type for the containing object literal or + // the type of the object literal itself. + return getWidenedType(contextualType ? getNonNullableType(contextualType) : checkExpressionCached(containingLiteral)); + } + // In an assignment of the form 'obj.xxx = function(...)' or 'obj[xxx] = function(...)', the + // contextual type for 'this' is 'obj'. + var parent = ts.walkUpParenthesizedExpressions(func.parent); + if (parent.kind === 209 /* BinaryExpression */ && parent.operatorToken.kind === 62 /* EqualsToken */) { + var target = parent.left; + if (ts.isAccessExpression(target)) { + var expression = target.expression; + // Don't contextually type `this` as `exports` in `exports.Point = function(x, y) { this.x = x; this.y = y; }` + if (inJs && ts.isIdentifier(expression)) { + var sourceFile = ts.getSourceFileOfNode(parent); + if (sourceFile.commonJsModuleIndicator && getResolvedSymbol(expression) === sourceFile.symbol) { + return undefined; + } + } + return getWidenedType(checkExpressionCached(expression)); + } + } + } + return undefined; + } + // Return contextual type of parameter or undefined if no contextual type is available + function getContextuallyTypedParameterType(parameter) { + var func = parameter.parent; + if (!isContextSensitiveFunctionOrObjectLiteralMethod(func)) { + return undefined; + } + var iife = ts.getImmediatelyInvokedFunctionExpression(func); + if (iife && iife.arguments) { + var args = getEffectiveCallArguments(iife); + var indexOfParameter = func.parameters.indexOf(parameter); + if (parameter.dotDotDotToken) { + return getSpreadArgumentType(args, indexOfParameter, args.length, anyType, /*context*/ undefined); + } + var links = getNodeLinks(iife); + var cached = links.resolvedSignature; + links.resolvedSignature = anySignature; + var type = indexOfParameter < args.length ? + getWidenedLiteralType(checkExpression(args[indexOfParameter])) : + parameter.initializer ? undefined : undefinedWideningType; + links.resolvedSignature = cached; + return type; + } + var contextualSignature = getContextualSignature(func); + if (contextualSignature) { + var index = func.parameters.indexOf(parameter) - (ts.getThisParameter(func) ? 1 : 0); + return parameter.dotDotDotToken && ts.lastOrUndefined(func.parameters) === parameter ? + getRestTypeAtPosition(contextualSignature, index) : + tryGetTypeAtPosition(contextualSignature, index); + } + } + function getContextualTypeForVariableLikeDeclaration(declaration) { + var typeNode = ts.getEffectiveTypeAnnotationNode(declaration); + if (typeNode) { + return getTypeFromTypeNode(typeNode); + } + switch (declaration.kind) { + case 156 /* Parameter */: + return getContextuallyTypedParameterType(declaration); + case 191 /* BindingElement */: + return getContextualTypeForBindingElement(declaration); + // By default, do nothing and return undefined - only parameters and binding elements have context implied by a parent + } + } + function getContextualTypeForBindingElement(declaration) { + var parent = declaration.parent.parent; + var name = declaration.propertyName || declaration.name; + var parentType = getContextualTypeForVariableLikeDeclaration(parent) || + parent.kind !== 191 /* BindingElement */ && parent.initializer && checkDeclarationInitializer(parent); + if (parentType && !ts.isBindingPattern(name) && !ts.isComputedNonLiteralName(name)) { + var nameType = getLiteralTypeFromPropertyName(name); + if (isTypeUsableAsPropertyName(nameType)) { + var text = getPropertyNameFromType(nameType); + return getTypeOfPropertyOfType(parentType, text); + } + } + } + // In a variable, parameter or property declaration with a type annotation, + // the contextual type of an initializer expression is the type of the variable, parameter or property. + // Otherwise, in a parameter declaration of a contextually typed function expression, + // the contextual type of an initializer expression is the contextual type of the parameter. + // Otherwise, in a variable or parameter declaration with a binding pattern name, + // the contextual type of an initializer expression is the type implied by the binding pattern. + // Otherwise, in a binding pattern inside a variable or parameter declaration, + // the contextual type of an initializer expression is the type annotation of the containing declaration, if present. + function getContextualTypeForInitializerExpression(node) { + var declaration = node.parent; + if (ts.hasInitializer(declaration) && node === declaration.initializer) { + var result = getContextualTypeForVariableLikeDeclaration(declaration); + if (result) { + return result; + } + if (ts.isBindingPattern(declaration.name)) { // This is less a contextual type and more an implied shape - in some cases, this may be undesirable + return getTypeFromBindingPattern(declaration.name, /*includePatternInType*/ true, /*reportErrors*/ false); + } + } + return undefined; + } + function getContextualTypeForReturnExpression(node) { + var func = ts.getContainingFunction(node); + if (func) { + var functionFlags = ts.getFunctionFlags(func); + if (functionFlags & 1 /* Generator */) { // AsyncGenerator function or Generator function + return undefined; + } + var contextualReturnType = getContextualReturnType(func); + if (contextualReturnType) { + if (functionFlags & 2 /* Async */) { // Async function + var contextualAwaitedType = mapType(contextualReturnType, getAwaitedTypeOfPromise); + return contextualAwaitedType && getUnionType([contextualAwaitedType, createPromiseLikeType(contextualAwaitedType)]); + } + return contextualReturnType; // Regular function + } + } + return undefined; + } + function getContextualTypeForAwaitOperand(node) { + var contextualType = getContextualType(node); + if (contextualType) { + var contextualAwaitedType = getAwaitedType(contextualType); + return contextualAwaitedType && getUnionType([contextualAwaitedType, createPromiseLikeType(contextualAwaitedType)]); + } + return undefined; + } + function getContextualTypeForYieldOperand(node) { + var func = ts.getContainingFunction(node); + if (func) { + var functionFlags = ts.getFunctionFlags(func); + var contextualReturnType = getContextualReturnType(func); + if (contextualReturnType) { + return node.asteriskToken + ? contextualReturnType + : getIterationTypeOfGeneratorFunctionReturnType(0 /* Yield */, contextualReturnType, (functionFlags & 2 /* Async */) !== 0); + } + } + return undefined; + } + function isInParameterInitializerBeforeContainingFunction(node) { + var inBindingInitializer = false; + while (node.parent && !ts.isFunctionLike(node.parent)) { + if (ts.isParameter(node.parent) && (inBindingInitializer || node.parent.initializer === node)) { + return true; + } + if (ts.isBindingElement(node.parent) && node.parent.initializer === node) { + inBindingInitializer = true; + } + node = node.parent; + } + return false; + } + function getContextualIterationType(kind, functionDecl) { + var isAsync = !!(ts.getFunctionFlags(functionDecl) & 2 /* Async */); + var contextualReturnType = getContextualReturnType(functionDecl); + if (contextualReturnType) { + return getIterationTypeOfGeneratorFunctionReturnType(kind, contextualReturnType, isAsync) + || undefined; + } + return undefined; + } + function getContextualReturnType(functionDecl) { + // If the containing function has a return type annotation, is a constructor, or is a get accessor whose + // corresponding set accessor has a type annotation, return statements in the function are contextually typed + var returnType = getReturnTypeFromAnnotation(functionDecl); + if (returnType) { + return returnType; + } + // Otherwise, if the containing function is contextually typed by a function type with exactly one call signature + // and that call signature is non-generic, return statements are contextually typed by the return type of the signature + var signature = getContextualSignatureForFunctionLikeDeclaration(functionDecl); + if (signature && !isResolvingReturnTypeOfSignature(signature)) { + return getReturnTypeOfSignature(signature); + } + return undefined; + } + // In a typed function call, an argument or substitution expression is contextually typed by the type of the corresponding parameter. + function getContextualTypeForArgument(callTarget, arg) { + var args = getEffectiveCallArguments(callTarget); + var argIndex = args.indexOf(arg); // -1 for e.g. the expression of a CallExpression, or the tag of a TaggedTemplateExpression + return argIndex === -1 ? undefined : getContextualTypeForArgumentAtIndex(callTarget, argIndex); + } + function getContextualTypeForArgumentAtIndex(callTarget, argIndex) { + // If we're already in the process of resolving the given signature, don't resolve again as + // that could cause infinite recursion. Instead, return anySignature. + var signature = getNodeLinks(callTarget).resolvedSignature === resolvingSignature ? resolvingSignature : getResolvedSignature(callTarget); + if (ts.isJsxOpeningLikeElement(callTarget) && argIndex === 0) { + return getEffectiveFirstArgumentForJsxSignature(signature, callTarget); + } + return getTypeAtPosition(signature, argIndex); + } + function getContextualTypeForSubstitutionExpression(template, substitutionExpression) { + if (template.parent.kind === 198 /* TaggedTemplateExpression */) { + return getContextualTypeForArgument(template.parent, substitutionExpression); + } + return undefined; + } + function getContextualTypeForBinaryOperand(node, contextFlags) { + var binaryExpression = node.parent; + var left = binaryExpression.left, operatorToken = binaryExpression.operatorToken, right = binaryExpression.right; + switch (operatorToken.kind) { + case 62 /* EqualsToken */: + if (node !== right) { + return undefined; + } + var contextSensitive = getIsContextSensitiveAssignmentOrContextType(binaryExpression); + if (!contextSensitive) { + return undefined; + } + return contextSensitive === true ? getTypeOfExpression(left) : contextSensitive; + case 56 /* BarBarToken */: + case 60 /* QuestionQuestionToken */: + // When an || expression has a contextual type, the operands are contextually typed by that type, except + // when that type originates in a binding pattern, the right operand is contextually typed by the type of + // the left operand. When an || expression has no contextual type, the right operand is contextually typed + // by the type of the left operand, except for the special case of Javascript declarations of the form + // `namespace.prop = namespace.prop || {}`. + var type = getContextualType(binaryExpression, contextFlags); + return node === right && (type && type.pattern || !type && !ts.isDefaultedExpandoInitializer(binaryExpression)) ? + getTypeOfExpression(left) : type; + case 55 /* AmpersandAmpersandToken */: + case 27 /* CommaToken */: + return node === right ? getContextualType(binaryExpression, contextFlags) : undefined; + default: + return undefined; + } + } + // In an assignment expression, the right operand is contextually typed by the type of the left operand. + // Don't do this for assignment declarations unless there is a type tag on the assignment, to avoid circularity from checking the right operand. + function getIsContextSensitiveAssignmentOrContextType(binaryExpression) { + var kind = ts.getAssignmentDeclarationKind(binaryExpression); + switch (kind) { + case 0 /* None */: + return true; + case 5 /* Property */: + case 1 /* ExportsProperty */: + case 6 /* Prototype */: + case 3 /* PrototypeProperty */: + // If `binaryExpression.left` was assigned a symbol, then this is a new declaration; otherwise it is an assignment to an existing declaration. + // See `bindStaticPropertyAssignment` in `binder.ts`. + if (!binaryExpression.left.symbol) { + return true; + } + else { + var decl = binaryExpression.left.symbol.valueDeclaration; + if (!decl) { + return false; + } + var lhs = ts.cast(binaryExpression.left, ts.isAccessExpression); + var overallAnnotation = ts.getEffectiveTypeAnnotationNode(decl); + if (overallAnnotation) { + return getTypeFromTypeNode(overallAnnotation); + } + else if (ts.isIdentifier(lhs.expression)) { + var id = lhs.expression; + var parentSymbol = resolveName(id, id.escapedText, 111551 /* Value */, undefined, id.escapedText, /*isUse*/ true); + if (parentSymbol) { + var annotated = ts.getEffectiveTypeAnnotationNode(parentSymbol.valueDeclaration); + if (annotated) { + var nameStr_1 = ts.getElementOrPropertyAccessName(lhs); + if (nameStr_1 !== undefined) { + var type = getTypeOfPropertyOfContextualType(getTypeFromTypeNode(annotated), nameStr_1); + return type || false; + } + } + return false; + } + } + return !ts.isInJSFile(decl); + } + case 2 /* ModuleExports */: + case 4 /* ThisProperty */: + if (!binaryExpression.symbol) + return true; + if (binaryExpression.symbol.valueDeclaration) { + var annotated = ts.getEffectiveTypeAnnotationNode(binaryExpression.symbol.valueDeclaration); + if (annotated) { + var type = getTypeFromTypeNode(annotated); + if (type) { + return type; + } + } + } + if (kind === 2 /* ModuleExports */) + return false; + var thisAccess = ts.cast(binaryExpression.left, ts.isAccessExpression); + if (!ts.isObjectLiteralMethod(ts.getThisContainer(thisAccess.expression, /*includeArrowFunctions*/ false))) { + return false; + } + var thisType = checkThisExpression(thisAccess.expression); + var nameStr = ts.getElementOrPropertyAccessName(thisAccess); + return nameStr !== undefined && thisType && getTypeOfPropertyOfContextualType(thisType, nameStr) || false; + case 7 /* ObjectDefinePropertyValue */: + case 8 /* ObjectDefinePropertyExports */: + case 9 /* ObjectDefinePrototypeProperty */: + return ts.Debug.fail("Does not apply"); + default: + return ts.Debug.assertNever(kind); + } + } + function isCircularMappedProperty(symbol) { + return !!(ts.getCheckFlags(symbol) & 262144 /* Mapped */ && !symbol.type && findResolutionCycleStartIndex(symbol, 0 /* Type */) >= 0); + } + function getTypeOfPropertyOfContextualType(type, name) { + return mapType(type, function (t) { + if (isGenericMappedType(t)) { + var constraint = getConstraintTypeFromMappedType(t); + var constraintOfConstraint = getBaseConstraintOfType(constraint) || constraint; + var propertyNameType = getLiteralType(ts.unescapeLeadingUnderscores(name)); + if (isTypeAssignableTo(propertyNameType, constraintOfConstraint)) { + return substituteIndexedMappedType(t, propertyNameType); + } + } + else if (t.flags & 3670016 /* StructuredType */) { + var prop = getPropertyOfType(t, name); + if (prop) { + return isCircularMappedProperty(prop) ? undefined : getTypeOfSymbol(prop); + } + if (isTupleType(t)) { + var restType = getRestTypeOfTupleType(t); + if (restType && isNumericLiteralName(name) && +name >= 0) { + return restType; + } + } + return isNumericLiteralName(name) && getIndexTypeOfContextualType(t, 1 /* Number */) || + getIndexTypeOfContextualType(t, 0 /* String */); + } + return undefined; + }, /*noReductions*/ true); + } + function getIndexTypeOfContextualType(type, kind) { + return mapType(type, function (t) { return getIndexTypeOfStructuredType(t, kind); }, /*noReductions*/ true); + } + // In an object literal contextually typed by a type T, the contextual type of a property assignment is the type of + // the matching property in T, if one exists. Otherwise, it is the type of the numeric index signature in T, if one + // exists. Otherwise, it is the type of the string index signature in T, if one exists. + function getContextualTypeForObjectLiteralMethod(node, contextFlags) { + ts.Debug.assert(ts.isObjectLiteralMethod(node)); + if (node.flags & 16777216 /* InWithStatement */) { + // We cannot answer semantic questions within a with block, do not proceed any further + return undefined; + } + return getContextualTypeForObjectLiteralElement(node, contextFlags); + } + function getContextualTypeForObjectLiteralElement(element, contextFlags) { + var objectLiteral = element.parent; + var type = getApparentTypeOfContextualType(objectLiteral, contextFlags); + if (type) { + if (!hasNonBindableDynamicName(element)) { + // For a (non-symbol) computed property, there is no reason to look up the name + // in the type. It will just be "__computed", which does not appear in any + // SymbolTable. + var symbolName_3 = getSymbolOfNode(element).escapedName; + var propertyType = getTypeOfPropertyOfContextualType(type, symbolName_3); + if (propertyType) { + return propertyType; + } + } + return isNumericName(element.name) && getIndexTypeOfContextualType(type, 1 /* Number */) || + getIndexTypeOfContextualType(type, 0 /* String */); + } + return undefined; + } + // In an array literal contextually typed by a type T, the contextual type of an element expression at index N is + // the type of the property with the numeric name N in T, if one exists. Otherwise, if T has a numeric index signature, + // it is the type of the numeric index signature in T. Otherwise, in ES6 and higher, the contextual type is the iterated + // type of T. + function getContextualTypeForElementExpression(arrayContextualType, index) { + return arrayContextualType && (getTypeOfPropertyOfContextualType(arrayContextualType, "" + index) + || getIteratedTypeOrElementType(1 /* Element */, arrayContextualType, undefinedType, /*errorNode*/ undefined, /*checkAssignability*/ false)); + } + // In a contextually typed conditional expression, the true/false expressions are contextually typed by the same type. + function getContextualTypeForConditionalOperand(node, contextFlags) { + var conditional = node.parent; + return node === conditional.whenTrue || node === conditional.whenFalse ? getContextualType(conditional, contextFlags) : undefined; + } + function getContextualTypeForChildJsxExpression(node, child) { + var attributesType = getApparentTypeOfContextualType(node.openingElement.tagName); + // JSX expression is in children of JSX Element, we will look for an "children" atttribute (we get the name from JSX.ElementAttributesProperty) + var jsxChildrenPropertyName = getJsxElementChildrenPropertyName(getJsxNamespaceAt(node)); + if (!(attributesType && !isTypeAny(attributesType) && jsxChildrenPropertyName && jsxChildrenPropertyName !== "")) { + return undefined; + } + var realChildren = getSemanticJsxChildren(node.children); + var childIndex = realChildren.indexOf(child); + var childFieldType = getTypeOfPropertyOfContextualType(attributesType, jsxChildrenPropertyName); + return childFieldType && (realChildren.length === 1 ? childFieldType : mapType(childFieldType, function (t) { + if (isArrayLikeType(t)) { + return getIndexedAccessType(t, getLiteralType(childIndex)); + } + else { + return t; + } + }, /*noReductions*/ true)); + } + function getContextualTypeForJsxExpression(node) { + var exprParent = node.parent; + return ts.isJsxAttributeLike(exprParent) + ? getContextualType(node) + : ts.isJsxElement(exprParent) + ? getContextualTypeForChildJsxExpression(exprParent, node) + : undefined; + } + function getContextualTypeForJsxAttribute(attribute) { + // When we trying to resolve JsxOpeningLikeElement as a stateless function element, we will already give its attributes a contextual type + // which is a type of the parameter of the signature we are trying out. + // If there is no contextual type (e.g. we are trying to resolve stateful component), get attributes type from resolving element's tagName + if (ts.isJsxAttribute(attribute)) { + var attributesType = getApparentTypeOfContextualType(attribute.parent); + if (!attributesType || isTypeAny(attributesType)) { + return undefined; + } + return getTypeOfPropertyOfContextualType(attributesType, attribute.name.escapedText); + } + else { + return getContextualType(attribute.parent); + } + } + // Return true if the given expression is possibly a discriminant value. We limit the kinds of + // expressions we check to those that don't depend on their contextual type in order not to cause + // recursive (and possibly infinite) invocations of getContextualType. + function isPossiblyDiscriminantValue(node) { + switch (node.kind) { + case 10 /* StringLiteral */: + case 8 /* NumericLiteral */: + case 9 /* BigIntLiteral */: + case 14 /* NoSubstitutionTemplateLiteral */: + case 106 /* TrueKeyword */: + case 91 /* FalseKeyword */: + case 100 /* NullKeyword */: + case 75 /* Identifier */: + case 146 /* UndefinedKeyword */: + return true; + case 194 /* PropertyAccessExpression */: + case 200 /* ParenthesizedExpression */: + return isPossiblyDiscriminantValue(node.expression); + case 276 /* JsxExpression */: + return !node.expression || isPossiblyDiscriminantValue(node.expression); + } + return false; + } + function discriminateContextualTypeByObjectMembers(node, contextualType) { + return discriminateTypeByDiscriminableItems(contextualType, ts.map(ts.filter(node.properties, function (p) { return !!p.symbol && p.kind === 281 /* PropertyAssignment */ && isPossiblyDiscriminantValue(p.initializer) && isDiscriminantProperty(contextualType, p.symbol.escapedName); }), function (prop) { return [function () { return checkExpression(prop.initializer); }, prop.symbol.escapedName]; }), isTypeAssignableTo, contextualType); + } + function discriminateContextualTypeByJSXAttributes(node, contextualType) { + return discriminateTypeByDiscriminableItems(contextualType, ts.map(ts.filter(node.properties, function (p) { return !!p.symbol && p.kind === 273 /* JsxAttribute */ && isDiscriminantProperty(contextualType, p.symbol.escapedName) && (!p.initializer || isPossiblyDiscriminantValue(p.initializer)); }), function (prop) { return [!prop.initializer ? (function () { return trueType; }) : (function () { return checkExpression(prop.initializer); }), prop.symbol.escapedName]; }), isTypeAssignableTo, contextualType); + } + // Return the contextual type for a given expression node. During overload resolution, a contextual type may temporarily + // be "pushed" onto a node using the contextualType property. + function getApparentTypeOfContextualType(node, contextFlags) { + var contextualType = ts.isObjectLiteralMethod(node) ? + getContextualTypeForObjectLiteralMethod(node, contextFlags) : + getContextualType(node, contextFlags); + var instantiatedType = instantiateContextualType(contextualType, node, contextFlags); + if (instantiatedType && !(contextFlags && contextFlags & 2 /* NoConstraints */ && instantiatedType.flags & 8650752 /* TypeVariable */)) { + var apparentType = mapType(instantiatedType, getApparentType, /*noReductions*/ true); + if (apparentType.flags & 1048576 /* Union */) { + if (ts.isObjectLiteralExpression(node)) { + return discriminateContextualTypeByObjectMembers(node, apparentType); + } + else if (ts.isJsxAttributes(node)) { + return discriminateContextualTypeByJSXAttributes(node, apparentType); + } + } + return apparentType; + } + } + // If the given contextual type contains instantiable types and if a mapper representing + // return type inferences is available, instantiate those types using that mapper. + function instantiateContextualType(contextualType, node, contextFlags) { + if (contextualType && maybeTypeOfKind(contextualType, 63176704 /* Instantiable */)) { + var inferenceContext = getInferenceContext(node); + // If no inferences have been made, nothing is gained from instantiating as type parameters + // would just be replaced with their defaults similar to the apparent type. + if (inferenceContext && ts.some(inferenceContext.inferences, hasInferenceCandidates)) { + // For contextual signatures we incorporate all inferences made so far, e.g. from return + // types as well as arguments to the left in a function call. + if (contextFlags && contextFlags & 1 /* Signature */) { + return instantiateInstantiableTypes(contextualType, inferenceContext.nonFixingMapper); + } + // For other purposes (e.g. determining whether to produce literal types) we only + // incorporate inferences made from the return type in a function call. + if (inferenceContext.returnMapper) { + return instantiateInstantiableTypes(contextualType, inferenceContext.returnMapper); + } + } + } + return contextualType; + } + // This function is similar to instantiateType, except that (a) it only instantiates types that + // are classified as instantiable (i.e. it doesn't instantiate object types), and (b) it performs + // no reductions on instantiated union types. + function instantiateInstantiableTypes(type, mapper) { + if (type.flags & 63176704 /* Instantiable */) { + return instantiateType(type, mapper); + } + if (type.flags & 1048576 /* Union */) { + return getUnionType(ts.map(type.types, function (t) { return instantiateInstantiableTypes(t, mapper); }), 0 /* None */); + } + if (type.flags & 2097152 /* Intersection */) { + return getIntersectionType(ts.map(type.types, function (t) { return instantiateInstantiableTypes(t, mapper); })); + } + return type; + } + /** + * Whoa! Do you really want to use this function? + * + * Unless you're trying to get the *non-apparent* type for a + * value-literal type or you're authoring relevant portions of this algorithm, + * you probably meant to use 'getApparentTypeOfContextualType'. + * Otherwise this may not be very useful. + * + * In cases where you *are* working on this function, you should understand + * when it is appropriate to use 'getContextualType' and 'getApparentTypeOfContextualType'. + * + * - Use 'getContextualType' when you are simply going to propagate the result to the expression. + * - Use 'getApparentTypeOfContextualType' when you're going to need the members of the type. + * + * @param node the expression whose contextual type will be returned. + * @returns the contextual type of an expression. + */ + function getContextualType(node, contextFlags) { + if (node.flags & 16777216 /* InWithStatement */) { + // We cannot answer semantic questions within a with block, do not proceed any further + return undefined; + } + if (node.contextualType) { + return node.contextualType; + } + var parent = node.parent; + switch (parent.kind) { + case 242 /* VariableDeclaration */: + case 156 /* Parameter */: + case 159 /* PropertyDeclaration */: + case 158 /* PropertySignature */: + case 191 /* BindingElement */: + return getContextualTypeForInitializerExpression(node); + case 202 /* ArrowFunction */: + case 235 /* ReturnStatement */: + return getContextualTypeForReturnExpression(node); + case 212 /* YieldExpression */: + return getContextualTypeForYieldOperand(parent); + case 206 /* AwaitExpression */: + return getContextualTypeForAwaitOperand(parent); + case 196 /* CallExpression */: + if (parent.expression.kind === 96 /* ImportKeyword */) { + return stringType; + } + /* falls through */ + case 197 /* NewExpression */: + return getContextualTypeForArgument(parent, node); + case 199 /* TypeAssertionExpression */: + case 217 /* AsExpression */: + return ts.isConstTypeReference(parent.type) ? undefined : getTypeFromTypeNode(parent.type); + case 209 /* BinaryExpression */: + return getContextualTypeForBinaryOperand(node, contextFlags); + case 281 /* PropertyAssignment */: + case 282 /* ShorthandPropertyAssignment */: + return getContextualTypeForObjectLiteralElement(parent, contextFlags); + case 283 /* SpreadAssignment */: + return getApparentTypeOfContextualType(parent.parent, contextFlags); + case 192 /* ArrayLiteralExpression */: { + var arrayLiteral = parent; + var type = getApparentTypeOfContextualType(arrayLiteral, contextFlags); + return getContextualTypeForElementExpression(type, ts.indexOfNode(arrayLiteral.elements, node)); + } + case 210 /* ConditionalExpression */: + return getContextualTypeForConditionalOperand(node, contextFlags); + case 221 /* TemplateSpan */: + ts.Debug.assert(parent.parent.kind === 211 /* TemplateExpression */); + return getContextualTypeForSubstitutionExpression(parent.parent, node); + case 200 /* ParenthesizedExpression */: { + // Like in `checkParenthesizedExpression`, an `/** @type {xyz} */` comment before a parenthesized expression acts as a type cast. + var tag = ts.isInJSFile(parent) ? ts.getJSDocTypeTag(parent) : undefined; + return tag ? getTypeFromTypeNode(tag.typeExpression.type) : getContextualType(parent, contextFlags); + } + case 276 /* JsxExpression */: + return getContextualTypeForJsxExpression(parent); + case 273 /* JsxAttribute */: + case 275 /* JsxSpreadAttribute */: + return getContextualTypeForJsxAttribute(parent); + case 268 /* JsxOpeningElement */: + case 267 /* JsxSelfClosingElement */: + return getContextualJsxElementAttributesType(parent, contextFlags); + } + return undefined; + } + function getInferenceContext(node) { + var ancestor = ts.findAncestor(node, function (n) { return !!n.inferenceContext; }); + return ancestor && ancestor.inferenceContext; + } + function getContextualJsxElementAttributesType(node, contextFlags) { + if (ts.isJsxOpeningElement(node) && node.parent.contextualType && contextFlags !== 4 /* Completions */) { + // Contextually applied type is moved from attributes up to the outer jsx attributes so when walking up from the children they get hit + // _However_ to hit them from the _attributes_ we must look for them here; otherwise we'll used the declared type + // (as below) instead! + return node.parent.contextualType; + } + return getContextualTypeForArgumentAtIndex(node, 0); + } + function getEffectiveFirstArgumentForJsxSignature(signature, node) { + return getJsxReferenceKind(node) !== 0 /* Component */ + ? getJsxPropsTypeFromCallSignature(signature, node) + : getJsxPropsTypeFromClassType(signature, node); + } + function getJsxPropsTypeFromCallSignature(sig, context) { + var propsType = getTypeOfFirstParameterOfSignatureWithFallback(sig, unknownType); + propsType = getJsxManagedAttributesFromLocatedAttributes(context, getJsxNamespaceAt(context), propsType); + var intrinsicAttribs = getJsxType(JsxNames.IntrinsicAttributes, context); + if (intrinsicAttribs !== errorType) { + propsType = intersectTypes(intrinsicAttribs, propsType); + } + return propsType; + } + function getJsxPropsTypeForSignatureFromMember(sig, forcedLookupLocation) { + if (sig.unionSignatures) { + // JSX Elements using the legacy `props`-field based lookup (eg, react class components) need to treat the `props` member as an input + // instead of an output position when resolving the signature. We need to go back to the input signatures of the composite signature, + // get the type of `props` on each return type individually, and then _intersect them_, rather than union them (as would normally occur + // for a union signature). It's an unfortunate quirk of looking in the output of the signature for the type we want to use for the input. + // The default behavior of `getTypeOfFirstParameterOfSignatureWithFallback` when no `props` member name is defined is much more sane. + var results = []; + for (var _i = 0, _a = sig.unionSignatures; _i < _a.length; _i++) { + var signature = _a[_i]; + var instance = getReturnTypeOfSignature(signature); + if (isTypeAny(instance)) { + return instance; + } + var propType = getTypeOfPropertyOfType(instance, forcedLookupLocation); + if (!propType) { + return; + } + results.push(propType); + } + return getIntersectionType(results); + } + var instanceType = getReturnTypeOfSignature(sig); + return isTypeAny(instanceType) ? instanceType : getTypeOfPropertyOfType(instanceType, forcedLookupLocation); + } + function getStaticTypeOfReferencedJsxConstructor(context) { + if (isJsxIntrinsicIdentifier(context.tagName)) { + var result = getIntrinsicAttributesTypeFromJsxOpeningLikeElement(context); + var fakeSignature = createSignatureForJSXIntrinsic(context, result); + return getOrCreateTypeFromSignature(fakeSignature); + } + var tagType = checkExpressionCached(context.tagName); + if (tagType.flags & 128 /* StringLiteral */) { + var result = getIntrinsicAttributesTypeFromStringLiteralType(tagType, context); + if (!result) { + return errorType; + } + var fakeSignature = createSignatureForJSXIntrinsic(context, result); + return getOrCreateTypeFromSignature(fakeSignature); + } + return tagType; + } + function getJsxManagedAttributesFromLocatedAttributes(context, ns, attributesType) { + var managedSym = getJsxLibraryManagedAttributes(ns); + if (managedSym) { + var declaredManagedType = getDeclaredTypeOfSymbol(managedSym); + var ctorType = getStaticTypeOfReferencedJsxConstructor(context); + if (ts.length(declaredManagedType.typeParameters) >= 2) { + var args = fillMissingTypeArguments([ctorType, attributesType], declaredManagedType.typeParameters, 2, ts.isInJSFile(context)); + return createTypeReference(declaredManagedType, args); + } + else if (ts.length(declaredManagedType.aliasTypeArguments) >= 2) { + var args = fillMissingTypeArguments([ctorType, attributesType], declaredManagedType.aliasTypeArguments, 2, ts.isInJSFile(context)); + return getTypeAliasInstantiation(declaredManagedType.aliasSymbol, args); + } + } + return attributesType; + } + function getJsxPropsTypeFromClassType(sig, context) { + var ns = getJsxNamespaceAt(context); + var forcedLookupLocation = getJsxElementPropertiesName(ns); + var attributesType = forcedLookupLocation === undefined + // If there is no type ElementAttributesProperty, return the type of the first parameter of the signature, which should be the props type + ? getTypeOfFirstParameterOfSignatureWithFallback(sig, unknownType) + : forcedLookupLocation === "" + // If there is no e.g. 'props' member in ElementAttributesProperty, use the element class type instead + ? getReturnTypeOfSignature(sig) + // Otherwise get the type of the property on the signature return type + : getJsxPropsTypeForSignatureFromMember(sig, forcedLookupLocation); + if (!attributesType) { + // There is no property named 'props' on this instance type + if (!!forcedLookupLocation && !!ts.length(context.attributes.properties)) { + error(context, ts.Diagnostics.JSX_element_class_does_not_support_attributes_because_it_does_not_have_a_0_property, ts.unescapeLeadingUnderscores(forcedLookupLocation)); + } + return unknownType; + } + attributesType = getJsxManagedAttributesFromLocatedAttributes(context, ns, attributesType); + if (isTypeAny(attributesType)) { + // Props is of type 'any' or unknown + return attributesType; + } + else { + // Normal case -- add in IntrinsicClassElements and IntrinsicElements + var apparentAttributesType = attributesType; + var intrinsicClassAttribs = getJsxType(JsxNames.IntrinsicClassAttributes, context); + if (intrinsicClassAttribs !== errorType) { + var typeParams = getLocalTypeParametersOfClassOrInterfaceOrTypeAlias(intrinsicClassAttribs.symbol); + var hostClassType = getReturnTypeOfSignature(sig); + apparentAttributesType = intersectTypes(typeParams + ? createTypeReference(intrinsicClassAttribs, fillMissingTypeArguments([hostClassType], typeParams, getMinTypeArgumentCount(typeParams), ts.isInJSFile(context))) + : intrinsicClassAttribs, apparentAttributesType); + } + var intrinsicAttribs = getJsxType(JsxNames.IntrinsicAttributes, context); + if (intrinsicAttribs !== errorType) { + apparentAttributesType = intersectTypes(intrinsicAttribs, apparentAttributesType); + } + return apparentAttributesType; + } + } + // If the given type is an object or union type with a single signature, and if that signature has at + // least as many parameters as the given function, return the signature. Otherwise return undefined. + function getContextualCallSignature(type, node) { + var signatures = getSignaturesOfType(type, 0 /* Call */); + if (signatures.length === 1) { + var signature = signatures[0]; + if (!isAritySmaller(signature, node)) { + return signature; + } + } + } + /** If the contextual signature has fewer parameters than the function expression, do not use it */ + function isAritySmaller(signature, target) { + var targetParameterCount = 0; + for (; targetParameterCount < target.parameters.length; targetParameterCount++) { + var param = target.parameters[targetParameterCount]; + if (param.initializer || param.questionToken || param.dotDotDotToken || isJSDocOptionalParameter(param)) { + break; + } + } + if (target.parameters.length && ts.parameterIsThisKeyword(target.parameters[0])) { + targetParameterCount--; + } + return !hasEffectiveRestParameter(signature) && getParameterCount(signature) < targetParameterCount; + } + function isFunctionExpressionOrArrowFunction(node) { + return node.kind === 201 /* FunctionExpression */ || node.kind === 202 /* ArrowFunction */; + } + function getContextualSignatureForFunctionLikeDeclaration(node) { + // Only function expressions, arrow functions, and object literal methods are contextually typed. + return isFunctionExpressionOrArrowFunction(node) || ts.isObjectLiteralMethod(node) + ? getContextualSignature(node) + : undefined; + } + // Return the contextual signature for a given expression node. A contextual type provides a + // contextual signature if it has a single call signature and if that call signature is non-generic. + // If the contextual type is a union type, get the signature from each type possible and if they are + // all identical ignoring their return type, the result is same signature but with return type as + // union type of return types from these signatures + function getContextualSignature(node) { + ts.Debug.assert(node.kind !== 161 /* MethodDeclaration */ || ts.isObjectLiteralMethod(node)); + var typeTagSignature = getSignatureOfTypeTag(node); + if (typeTagSignature) { + return typeTagSignature; + } + var type = getApparentTypeOfContextualType(node, 1 /* Signature */); + if (!type) { + return undefined; + } + if (!(type.flags & 1048576 /* Union */)) { + return getContextualCallSignature(type, node); + } + var signatureList; + var types = type.types; + for (var _i = 0, types_17 = types; _i < types_17.length; _i++) { + var current = types_17[_i]; + var signature = getContextualCallSignature(current, node); + if (signature) { + if (!signatureList) { + // This signature will contribute to contextual union signature + signatureList = [signature]; + } + else if (!compareSignaturesIdentical(signatureList[0], signature, /*partialMatch*/ false, /*ignoreThisTypes*/ true, /*ignoreReturnTypes*/ true, compareTypesIdentical)) { + // Signatures aren't identical, do not use + return undefined; + } + else { + // Use this signature for contextual union signature + signatureList.push(signature); + } + } + } + // Result is union of signatures collected (return type is union of return types of this signature set) + if (signatureList) { + return signatureList.length === 1 ? signatureList[0] : createUnionSignature(signatureList[0], signatureList); + } + } + function checkSpreadExpression(node, checkMode) { + if (languageVersion < 2 /* ES2015 */) { + checkExternalEmitHelpers(node, compilerOptions.downlevelIteration ? 1536 /* SpreadIncludes */ : 2048 /* SpreadArrays */); + } + var arrayOrIterableType = checkExpression(node.expression, checkMode); + return checkIteratedTypeOrElementType(33 /* Spread */, arrayOrIterableType, undefinedType, node.expression); + } + function hasDefaultValue(node) { + return (node.kind === 191 /* BindingElement */ && !!node.initializer) || + (node.kind === 209 /* BinaryExpression */ && node.operatorToken.kind === 62 /* EqualsToken */); + } + function checkArrayLiteral(node, checkMode, forceTuple) { + var elements = node.elements; + var elementCount = elements.length; + var elementTypes = []; + var hasEndingSpreadElement = false; + var hasNonEndingSpreadElement = false; + var contextualType = getApparentTypeOfContextualType(node); + var inDestructuringPattern = ts.isAssignmentTarget(node); + var inConstContext = isConstContext(node); + for (var i = 0; i < elementCount; i++) { + var e = elements[i]; + var spread = e.kind === 213 /* SpreadElement */ && e.expression; + var spreadType = spread && checkExpression(spread, checkMode, forceTuple); + if (spreadType && isTupleType(spreadType)) { + elementTypes.push.apply(elementTypes, getTypeArguments(spreadType)); + if (spreadType.target.hasRestElement) { + if (i === elementCount - 1) + hasEndingSpreadElement = true; + else + hasNonEndingSpreadElement = true; + } + } + else { + if (inDestructuringPattern && spreadType) { + // Given the following situation: + // var c: {}; + // [...c] = ["", 0]; + // + // c is represented in the tree as a spread element in an array literal. + // But c really functions as a rest element, and its purpose is to provide + // a contextual type for the right hand side of the assignment. Therefore, + // instead of calling checkExpression on "...c", which will give an error + // if c is not iterable/array-like, we need to act as if we are trying to + // get the contextual element type from it. So we do something similar to + // getContextualTypeForElementExpression, which will crucially not error + // if there is no index type / iterated type. + var restElementType = getIndexTypeOfType(spreadType, 1 /* Number */) || + getIteratedTypeOrElementType(65 /* Destructuring */, spreadType, undefinedType, /*errorNode*/ undefined, /*checkAssignability*/ false); + if (restElementType) { + elementTypes.push(restElementType); + } + } + else { + var elementContextualType = getContextualTypeForElementExpression(contextualType, elementTypes.length); + var type = checkExpressionForMutableLocation(e, checkMode, elementContextualType, forceTuple); + elementTypes.push(type); + } + if (spread) { // tuples are done above, so these are only arrays + if (i === elementCount - 1) + hasEndingSpreadElement = true; + else + hasNonEndingSpreadElement = true; + } + } + } + if (!hasNonEndingSpreadElement) { + var minLength = elementTypes.length - (hasEndingSpreadElement ? 1 : 0); + // If array literal is actually a destructuring pattern, mark it as an implied type. We do this such + // that we get the same behavior for "var [x, y] = []" and "[x, y] = []". + var tupleResult = void 0; + if (inDestructuringPattern && minLength > 0) { + var type = cloneTypeReference(createTupleType(elementTypes, minLength, hasEndingSpreadElement)); + type.pattern = node; + return type; + } + else if (tupleResult = getArrayLiteralTupleTypeIfApplicable(elementTypes, contextualType, hasEndingSpreadElement, elementTypes.length, inConstContext)) { + return createArrayLiteralType(tupleResult); + } + else if (forceTuple) { + return createArrayLiteralType(createTupleType(elementTypes, minLength, hasEndingSpreadElement)); + } + } + return createArrayLiteralType(createArrayType(elementTypes.length ? + getUnionType(elementTypes, 2 /* Subtype */) : + strictNullChecks ? implicitNeverType : undefinedWideningType, inConstContext)); + } + function createArrayLiteralType(type) { + if (!(ts.getObjectFlags(type) & 4 /* Reference */)) { + return type; + } + var literalType = type.literalType; + if (!literalType) { + literalType = type.literalType = cloneTypeReference(type); + literalType.objectFlags |= 65536 /* ArrayLiteral */ | 1048576 /* ContainsObjectOrArrayLiteral */; + } + return literalType; + } + function getArrayLiteralTupleTypeIfApplicable(elementTypes, contextualType, hasRestElement, elementCount, readonly) { + if (elementCount === void 0) { elementCount = elementTypes.length; } + if (readonly === void 0) { readonly = false; } + // Infer a tuple type when the contextual type is or contains a tuple-like type + if (readonly || (contextualType && forEachType(contextualType, isTupleLikeType))) { + return createTupleType(elementTypes, elementCount - (hasRestElement ? 1 : 0), hasRestElement, readonly); + } + } + function isNumericName(name) { + switch (name.kind) { + case 154 /* ComputedPropertyName */: + return isNumericComputedName(name); + case 75 /* Identifier */: + return isNumericLiteralName(name.escapedText); + case 8 /* NumericLiteral */: + case 10 /* StringLiteral */: + return isNumericLiteralName(name.text); + default: + return false; + } + } + function isNumericComputedName(name) { + // It seems odd to consider an expression of type Any to result in a numeric name, + // but this behavior is consistent with checkIndexedAccess + return isTypeAssignableToKind(checkComputedPropertyName(name), 296 /* NumberLike */); + } + function isInfinityOrNaNString(name) { + return name === "Infinity" || name === "-Infinity" || name === "NaN"; + } + function isNumericLiteralName(name) { + // The intent of numeric names is that + // - they are names with text in a numeric form, and that + // - setting properties/indexing with them is always equivalent to doing so with the numeric literal 'numLit', + // acquired by applying the abstract 'ToNumber' operation on the name's text. + // + // The subtlety is in the latter portion, as we cannot reliably say that anything that looks like a numeric literal is a numeric name. + // In fact, it is the case that the text of the name must be equal to 'ToString(numLit)' for this to hold. + // + // Consider the property name '"0xF00D"'. When one indexes with '0xF00D', they are actually indexing with the value of 'ToString(0xF00D)' + // according to the ECMAScript specification, so it is actually as if the user indexed with the string '"61453"'. + // Thus, the text of all numeric literals equivalent to '61543' such as '0xF00D', '0xf00D', '0170015', etc. are not valid numeric names + // because their 'ToString' representation is not equal to their original text. + // This is motivated by ECMA-262 sections 9.3.1, 9.8.1, 11.1.5, and 11.2.1. + // + // Here, we test whether 'ToString(ToNumber(name))' is exactly equal to 'name'. + // The '+' prefix operator is equivalent here to applying the abstract ToNumber operation. + // Applying the 'toString()' method on a number gives us the abstract ToString operation on a number. + // + // Note that this accepts the values 'Infinity', '-Infinity', and 'NaN', and that this is intentional. + // This is desired behavior, because when indexing with them as numeric entities, you are indexing + // with the strings '"Infinity"', '"-Infinity"', and '"NaN"' respectively. + return (+name).toString() === name; + } + function checkComputedPropertyName(node) { + var links = getNodeLinks(node.expression); + if (!links.resolvedType) { + links.resolvedType = checkExpression(node.expression); + // This will allow types number, string, symbol or any. It will also allow enums, the unknown + // type, and any union of these types (like string | number). + if (links.resolvedType.flags & 98304 /* Nullable */ || + !isTypeAssignableToKind(links.resolvedType, 132 /* StringLike */ | 296 /* NumberLike */ | 12288 /* ESSymbolLike */) && + !isTypeAssignableTo(links.resolvedType, stringNumberSymbolType)) { + error(node, ts.Diagnostics.A_computed_property_name_must_be_of_type_string_number_symbol_or_any); + } + else { + checkThatExpressionIsProperSymbolReference(node.expression, links.resolvedType, /*reportError*/ true); + } + } + return links.resolvedType; + } + function getObjectLiteralIndexInfo(node, offset, properties, kind) { + var propTypes = []; + for (var i = 0; i < properties.length; i++) { + if (kind === 0 /* String */ || isNumericName(node.properties[i + offset].name)) { + propTypes.push(getTypeOfSymbol(properties[i])); + } + } + var unionType = propTypes.length ? getUnionType(propTypes, 2 /* Subtype */) : undefinedType; + return createIndexInfo(unionType, isConstContext(node)); + } + function getImmediateAliasedSymbol(symbol) { + ts.Debug.assert((symbol.flags & 2097152 /* Alias */) !== 0, "Should only get Alias here."); + var links = getSymbolLinks(symbol); + if (!links.immediateTarget) { + var node = getDeclarationOfAliasSymbol(symbol); + if (!node) + return ts.Debug.fail(); + links.immediateTarget = getTargetOfAliasDeclaration(node, /*dontRecursivelyResolve*/ true); + } + return links.immediateTarget; + } + function checkObjectLiteral(node, checkMode) { + var inDestructuringPattern = ts.isAssignmentTarget(node); + // Grammar checking + checkGrammarObjectLiteralExpression(node, inDestructuringPattern); + var allPropertiesTable = strictNullChecks ? ts.createSymbolTable() : undefined; + var propertiesTable = ts.createSymbolTable(); + var propertiesArray = []; + var spread = emptyObjectType; + var contextualType = getApparentTypeOfContextualType(node); + var contextualTypeHasPattern = contextualType && contextualType.pattern && + (contextualType.pattern.kind === 189 /* ObjectBindingPattern */ || contextualType.pattern.kind === 193 /* ObjectLiteralExpression */); + var inConstContext = isConstContext(node); + var checkFlags = inConstContext ? 8 /* Readonly */ : 0; + var isInJavascript = ts.isInJSFile(node) && !ts.isInJsonFile(node); + var enumTag = ts.getJSDocEnumTag(node); + var isJSObjectLiteral = !contextualType && isInJavascript && !enumTag; + var objectFlags = freshObjectLiteralFlag; + var patternWithComputedProperties = false; + var hasComputedStringProperty = false; + var hasComputedNumberProperty = false; + // Spreads may cause an early bail; ensure computed names are always checked (this is cached) + // As otherwise they may not be checked until exports for the type at this position are retrieved, + // which may never occur. + for (var _i = 0, _a = node.properties; _i < _a.length; _i++) { + var elem = _a[_i]; + if (elem.name && ts.isComputedPropertyName(elem.name) && !ts.isWellKnownSymbolSyntactically(elem.name)) { + checkComputedPropertyName(elem.name); + } + } + var offset = 0; + for (var i = 0; i < node.properties.length; i++) { + var memberDecl = node.properties[i]; + var member = getSymbolOfNode(memberDecl); + var computedNameType = memberDecl.name && memberDecl.name.kind === 154 /* ComputedPropertyName */ && !ts.isWellKnownSymbolSyntactically(memberDecl.name.expression) ? + checkComputedPropertyName(memberDecl.name) : undefined; + if (memberDecl.kind === 281 /* PropertyAssignment */ || + memberDecl.kind === 282 /* ShorthandPropertyAssignment */ || + ts.isObjectLiteralMethod(memberDecl)) { + var type = memberDecl.kind === 281 /* PropertyAssignment */ ? checkPropertyAssignment(memberDecl, checkMode) : + memberDecl.kind === 282 /* ShorthandPropertyAssignment */ ? checkExpressionForMutableLocation(memberDecl.name, checkMode) : + checkObjectLiteralMethod(memberDecl, checkMode); + if (isInJavascript) { + var jsDocType = getTypeForDeclarationFromJSDocComment(memberDecl); + if (jsDocType) { + checkTypeAssignableTo(type, jsDocType, memberDecl); + type = jsDocType; + } + else if (enumTag && enumTag.typeExpression) { + checkTypeAssignableTo(type, getTypeFromTypeNode(enumTag.typeExpression), memberDecl); + } + } + objectFlags |= ts.getObjectFlags(type) & 3670016 /* PropagatingFlags */; + var nameType = computedNameType && isTypeUsableAsPropertyName(computedNameType) ? computedNameType : undefined; + var prop = nameType ? + createSymbol(4 /* Property */ | member.flags, getPropertyNameFromType(nameType), checkFlags | 4096 /* Late */) : + createSymbol(4 /* Property */ | member.flags, member.escapedName, checkFlags); + if (nameType) { + prop.nameType = nameType; + } + if (inDestructuringPattern) { + // If object literal is an assignment pattern and if the assignment pattern specifies a default value + // for the property, make the property optional. + var isOptional = (memberDecl.kind === 281 /* PropertyAssignment */ && hasDefaultValue(memberDecl.initializer)) || + (memberDecl.kind === 282 /* ShorthandPropertyAssignment */ && memberDecl.objectAssignmentInitializer); + if (isOptional) { + prop.flags |= 16777216 /* Optional */; + } + } + else if (contextualTypeHasPattern && !(ts.getObjectFlags(contextualType) & 512 /* ObjectLiteralPatternWithComputedProperties */)) { + // If object literal is contextually typed by the implied type of a binding pattern, and if the + // binding pattern specifies a default value for the property, make the property optional. + var impliedProp = getPropertyOfType(contextualType, member.escapedName); + if (impliedProp) { + prop.flags |= impliedProp.flags & 16777216 /* Optional */; + } + else if (!compilerOptions.suppressExcessPropertyErrors && !getIndexInfoOfType(contextualType, 0 /* String */)) { + error(memberDecl.name, ts.Diagnostics.Object_literal_may_only_specify_known_properties_and_0_does_not_exist_in_type_1, symbolToString(member), typeToString(contextualType)); + } + } + prop.declarations = member.declarations; + prop.parent = member.parent; + if (member.valueDeclaration) { + prop.valueDeclaration = member.valueDeclaration; + } + prop.type = type; + prop.target = member; + member = prop; + allPropertiesTable === null || allPropertiesTable === void 0 ? void 0 : allPropertiesTable.set(prop.escapedName, prop); + } + else if (memberDecl.kind === 283 /* SpreadAssignment */) { + if (languageVersion < 2 /* ES2015 */) { + checkExternalEmitHelpers(memberDecl, 2 /* Assign */); + } + if (propertiesArray.length > 0) { + spread = getSpreadType(spread, createObjectLiteralType(), node.symbol, objectFlags, inConstContext); + propertiesArray = []; + propertiesTable = ts.createSymbolTable(); + hasComputedStringProperty = false; + hasComputedNumberProperty = false; + } + var type = getReducedType(checkExpression(memberDecl.expression)); + if (!isValidSpreadType(type)) { + error(memberDecl, ts.Diagnostics.Spread_types_may_only_be_created_from_object_types); + return errorType; + } + if (allPropertiesTable) { + checkSpreadPropOverrides(type, allPropertiesTable, memberDecl); + } + spread = getSpreadType(spread, type, node.symbol, objectFlags, inConstContext); + offset = i + 1; + continue; + } + else { + // TypeScript 1.0 spec (April 2014) + // A get accessor declaration is processed in the same manner as + // an ordinary function declaration(section 6.1) with no parameters. + // A set accessor declaration is processed in the same manner + // as an ordinary function declaration with a single parameter and a Void return type. + ts.Debug.assert(memberDecl.kind === 163 /* GetAccessor */ || memberDecl.kind === 164 /* SetAccessor */); + checkNodeDeferred(memberDecl); + } + if (computedNameType && !(computedNameType.flags & 8576 /* StringOrNumberLiteralOrUnique */)) { + if (isTypeAssignableTo(computedNameType, stringNumberSymbolType)) { + if (isTypeAssignableTo(computedNameType, numberType)) { + hasComputedNumberProperty = true; + } + else { + hasComputedStringProperty = true; + } + if (inDestructuringPattern) { + patternWithComputedProperties = true; + } + } + } + else { + propertiesTable.set(member.escapedName, member); + } + propertiesArray.push(member); + } + // If object literal is contextually typed by the implied type of a binding pattern, augment the result + // type with those properties for which the binding pattern specifies a default value. + // If the object literal is spread into another object literal, skip this step and let the top-level object + // literal handle it instead. + if (contextualTypeHasPattern && node.parent.kind !== 283 /* SpreadAssignment */) { + for (var _b = 0, _c = getPropertiesOfType(contextualType); _b < _c.length; _b++) { + var prop = _c[_b]; + if (!propertiesTable.get(prop.escapedName) && !getPropertyOfType(spread, prop.escapedName)) { + if (!(prop.flags & 16777216 /* Optional */)) { + error(prop.valueDeclaration || prop.bindingElement, ts.Diagnostics.Initializer_provides_no_value_for_this_binding_element_and_the_binding_element_has_no_default_value); + } + propertiesTable.set(prop.escapedName, prop); + propertiesArray.push(prop); + } + } + } + if (spread !== emptyObjectType) { + if (propertiesArray.length > 0) { + spread = getSpreadType(spread, createObjectLiteralType(), node.symbol, objectFlags, inConstContext); + propertiesArray = []; + propertiesTable = ts.createSymbolTable(); + hasComputedStringProperty = false; + hasComputedNumberProperty = false; + } + // remap the raw emptyObjectType fed in at the top into a fresh empty object literal type, unique to this use site + return mapType(spread, function (t) { return t === emptyObjectType ? createObjectLiteralType() : t; }); + } + return createObjectLiteralType(); + function createObjectLiteralType() { + var stringIndexInfo = hasComputedStringProperty ? getObjectLiteralIndexInfo(node, offset, propertiesArray, 0 /* String */) : undefined; + var numberIndexInfo = hasComputedNumberProperty ? getObjectLiteralIndexInfo(node, offset, propertiesArray, 1 /* Number */) : undefined; + var result = createAnonymousType(node.symbol, propertiesTable, ts.emptyArray, ts.emptyArray, stringIndexInfo, numberIndexInfo); + result.objectFlags |= objectFlags | 128 /* ObjectLiteral */ | 1048576 /* ContainsObjectOrArrayLiteral */; + if (isJSObjectLiteral) { + result.objectFlags |= 16384 /* JSLiteral */; + } + if (patternWithComputedProperties) { + result.objectFlags |= 512 /* ObjectLiteralPatternWithComputedProperties */; + } + if (inDestructuringPattern) { + result.pattern = node; + } + return result; + } + } + function isValidSpreadType(type) { + if (type.flags & 63176704 /* Instantiable */) { + var constraint = getBaseConstraintOfType(type); + if (constraint !== undefined) { + return isValidSpreadType(constraint); + } + } + return !!(type.flags & (1 /* Any */ | 67108864 /* NonPrimitive */ | 524288 /* Object */ | 58982400 /* InstantiableNonPrimitive */) || + getFalsyFlags(type) & 117632 /* DefinitelyFalsy */ && isValidSpreadType(removeDefinitelyFalsyTypes(type)) || + type.flags & 3145728 /* UnionOrIntersection */ && ts.every(type.types, isValidSpreadType)); + } + function checkJsxSelfClosingElementDeferred(node) { + checkJsxOpeningLikeElementOrOpeningFragment(node); + resolveUntypedCall(node); // ensure type arguments and parameters are typechecked, even if there is an arity error + } + function checkJsxSelfClosingElement(node, _checkMode) { + checkNodeDeferred(node); + return getJsxElementTypeAt(node) || anyType; + } + function checkJsxElementDeferred(node) { + // Check attributes + checkJsxOpeningLikeElementOrOpeningFragment(node.openingElement); + // Perform resolution on the closing tag so that rename/go to definition/etc work + if (isJsxIntrinsicIdentifier(node.closingElement.tagName)) { + getIntrinsicTagSymbol(node.closingElement); + } + else { + checkExpression(node.closingElement.tagName); + } + checkJsxChildren(node); + } + function checkJsxElement(node, _checkMode) { + checkNodeDeferred(node); + return getJsxElementTypeAt(node) || anyType; + } + function checkJsxFragment(node) { + checkJsxOpeningLikeElementOrOpeningFragment(node.openingFragment); + if (compilerOptions.jsx === 2 /* React */ && (compilerOptions.jsxFactory || ts.getSourceFileOfNode(node).pragmas.has("jsx"))) { + error(node, compilerOptions.jsxFactory + ? ts.Diagnostics.JSX_fragment_is_not_supported_when_using_jsxFactory + : ts.Diagnostics.JSX_fragment_is_not_supported_when_using_an_inline_JSX_factory_pragma); + } + checkJsxChildren(node); + return getJsxElementTypeAt(node) || anyType; + } + /** + * Returns true iff the JSX element name would be a valid JS identifier, ignoring restrictions about keywords not being identifiers + */ + function isUnhyphenatedJsxName(name) { + // - is the only character supported in JSX attribute names that isn't valid in JavaScript identifiers + return !ts.stringContains(name, "-"); + } + /** + * Returns true iff React would emit this tag name as a string rather than an identifier or qualified name + */ + function isJsxIntrinsicIdentifier(tagName) { + return tagName.kind === 75 /* Identifier */ && ts.isIntrinsicJsxName(tagName.escapedText); + } + function checkJsxAttribute(node, checkMode) { + return node.initializer + ? checkExpressionForMutableLocation(node.initializer, checkMode) + : trueType; // is sugar for + } + /** + * Get attributes type of the JSX opening-like element. The result is from resolving "attributes" property of the opening-like element. + * + * @param openingLikeElement a JSX opening-like element + * @param filter a function to remove attributes that will not participate in checking whether attributes are assignable + * @return an anonymous type (similar to the one returned by checkObjectLiteral) in which its properties are attributes property. + * @remarks Because this function calls getSpreadType, it needs to use the same checks as checkObjectLiteral, + * which also calls getSpreadType. + */ + function createJsxAttributesTypeFromAttributesProperty(openingLikeElement, checkMode) { + var attributes = openingLikeElement.attributes; + var allAttributesTable = strictNullChecks ? ts.createSymbolTable() : undefined; + var attributesTable = ts.createSymbolTable(); + var spread = emptyJsxObjectType; + var hasSpreadAnyType = false; + var typeToIntersect; + var explicitlySpecifyChildrenAttribute = false; + var objectFlags = 4096 /* JsxAttributes */; + var jsxChildrenPropertyName = getJsxElementChildrenPropertyName(getJsxNamespaceAt(openingLikeElement)); + for (var _i = 0, _a = attributes.properties; _i < _a.length; _i++) { + var attributeDecl = _a[_i]; + var member = attributeDecl.symbol; + if (ts.isJsxAttribute(attributeDecl)) { + var exprType = checkJsxAttribute(attributeDecl, checkMode); + objectFlags |= ts.getObjectFlags(exprType) & 3670016 /* PropagatingFlags */; + var attributeSymbol = createSymbol(4 /* Property */ | 33554432 /* Transient */ | member.flags, member.escapedName); + attributeSymbol.declarations = member.declarations; + attributeSymbol.parent = member.parent; + if (member.valueDeclaration) { + attributeSymbol.valueDeclaration = member.valueDeclaration; + } + attributeSymbol.type = exprType; + attributeSymbol.target = member; + attributesTable.set(attributeSymbol.escapedName, attributeSymbol); + allAttributesTable === null || allAttributesTable === void 0 ? void 0 : allAttributesTable.set(attributeSymbol.escapedName, attributeSymbol); + if (attributeDecl.name.escapedText === jsxChildrenPropertyName) { + explicitlySpecifyChildrenAttribute = true; + } + } + else { + ts.Debug.assert(attributeDecl.kind === 275 /* JsxSpreadAttribute */); + if (attributesTable.size > 0) { + spread = getSpreadType(spread, createJsxAttributesType(), attributes.symbol, objectFlags, /*readonly*/ false); + attributesTable = ts.createSymbolTable(); + } + var exprType = getReducedType(checkExpressionCached(attributeDecl.expression, checkMode)); + if (isTypeAny(exprType)) { + hasSpreadAnyType = true; + } + if (isValidSpreadType(exprType)) { + spread = getSpreadType(spread, exprType, attributes.symbol, objectFlags, /*readonly*/ false); + if (allAttributesTable) { + checkSpreadPropOverrides(exprType, allAttributesTable, attributeDecl); + } + } + else { + typeToIntersect = typeToIntersect ? getIntersectionType([typeToIntersect, exprType]) : exprType; + } + } + } + if (!hasSpreadAnyType) { + if (attributesTable.size > 0) { + spread = getSpreadType(spread, createJsxAttributesType(), attributes.symbol, objectFlags, /*readonly*/ false); + } + } + // Handle children attribute + var parent = openingLikeElement.parent.kind === 266 /* JsxElement */ ? openingLikeElement.parent : undefined; + // We have to check that openingElement of the parent is the one we are visiting as this may not be true for selfClosingElement + if (parent && parent.openingElement === openingLikeElement && parent.children.length > 0) { + var childrenTypes = checkJsxChildren(parent, checkMode); + if (!hasSpreadAnyType && jsxChildrenPropertyName && jsxChildrenPropertyName !== "") { + // Error if there is a attribute named "children" explicitly specified and children element. + // This is because children element will overwrite the value from attributes. + // Note: we will not warn "children" attribute overwritten if "children" attribute is specified in object spread. + if (explicitlySpecifyChildrenAttribute) { + error(attributes, ts.Diagnostics._0_are_specified_twice_The_attribute_named_0_will_be_overwritten, ts.unescapeLeadingUnderscores(jsxChildrenPropertyName)); + } + var contextualType = getApparentTypeOfContextualType(openingLikeElement.attributes); + var childrenContextualType = contextualType && getTypeOfPropertyOfContextualType(contextualType, jsxChildrenPropertyName); + // If there are children in the body of JSX element, create dummy attribute "children" with the union of children types so that it will pass the attribute checking process + var childrenPropSymbol = createSymbol(4 /* Property */ | 33554432 /* Transient */, jsxChildrenPropertyName); + childrenPropSymbol.type = childrenTypes.length === 1 ? + childrenTypes[0] : + (getArrayLiteralTupleTypeIfApplicable(childrenTypes, childrenContextualType, /*hasRestElement*/ false) || createArrayType(getUnionType(childrenTypes))); + // Fake up a property declaration for the children + childrenPropSymbol.valueDeclaration = ts.createPropertySignature(/*modifiers*/ undefined, ts.unescapeLeadingUnderscores(jsxChildrenPropertyName), /*questionToken*/ undefined, /*type*/ undefined, /*initializer*/ undefined); + childrenPropSymbol.valueDeclaration.parent = attributes; + childrenPropSymbol.valueDeclaration.symbol = childrenPropSymbol; + var childPropMap = ts.createSymbolTable(); + childPropMap.set(jsxChildrenPropertyName, childrenPropSymbol); + spread = getSpreadType(spread, createAnonymousType(attributes.symbol, childPropMap, ts.emptyArray, ts.emptyArray, /*stringIndexInfo*/ undefined, /*numberIndexInfo*/ undefined), attributes.symbol, objectFlags, /*readonly*/ false); + } + } + if (hasSpreadAnyType) { + return anyType; + } + if (typeToIntersect && spread !== emptyJsxObjectType) { + return getIntersectionType([typeToIntersect, spread]); + } + return typeToIntersect || (spread === emptyJsxObjectType ? createJsxAttributesType() : spread); + /** + * Create anonymous type from given attributes symbol table. + * @param symbol a symbol of JsxAttributes containing attributes corresponding to attributesTable + * @param attributesTable a symbol table of attributes property + */ + function createJsxAttributesType() { + objectFlags |= freshObjectLiteralFlag; + var result = createAnonymousType(attributes.symbol, attributesTable, ts.emptyArray, ts.emptyArray, /*stringIndexInfo*/ undefined, /*numberIndexInfo*/ undefined); + result.objectFlags |= objectFlags | 128 /* ObjectLiteral */ | 1048576 /* ContainsObjectOrArrayLiteral */; + return result; + } + } + function checkJsxChildren(node, checkMode) { + var childrenTypes = []; + for (var _i = 0, _a = node.children; _i < _a.length; _i++) { + var child = _a[_i]; + // In React, JSX text that contains only whitespaces will be ignored so we don't want to type-check that + // because then type of children property will have constituent of string type. + if (child.kind === 11 /* JsxText */) { + if (!child.containsOnlyTriviaWhiteSpaces) { + childrenTypes.push(stringType); + } + } + else { + childrenTypes.push(checkExpressionForMutableLocation(child, checkMode)); + } + } + return childrenTypes; + } + function checkSpreadPropOverrides(type, props, spread) { + for (var _i = 0, _a = getPropertiesOfType(type); _i < _a.length; _i++) { + var right = _a[_i]; + var left = props.get(right.escapedName); + var rightType = getTypeOfSymbol(right); + if (left && !maybeTypeOfKind(rightType, 98304 /* Nullable */) && !(maybeTypeOfKind(rightType, 3 /* AnyOrUnknown */) && right.flags & 16777216 /* Optional */)) { + var diagnostic = error(left.valueDeclaration, ts.Diagnostics._0_is_specified_more_than_once_so_this_usage_will_be_overwritten, ts.unescapeLeadingUnderscores(left.escapedName)); + ts.addRelatedInfo(diagnostic, ts.createDiagnosticForNode(spread, ts.Diagnostics.This_spread_always_overwrites_this_property)); + } + } + } + /** + * Check attributes property of opening-like element. This function is called during chooseOverload to get call signature of a JSX opening-like element. + * (See "checkApplicableSignatureForJsxOpeningLikeElement" for how the function is used) + * @param node a JSXAttributes to be resolved of its type + */ + function checkJsxAttributes(node, checkMode) { + return createJsxAttributesTypeFromAttributesProperty(node.parent, checkMode); + } + function getJsxType(name, location) { + var namespace = getJsxNamespaceAt(location); + var exports = namespace && getExportsOfSymbol(namespace); + var typeSymbol = exports && getSymbol(exports, name, 788968 /* Type */); + return typeSymbol ? getDeclaredTypeOfSymbol(typeSymbol) : errorType; + } + /** + * Looks up an intrinsic tag name and returns a symbol that either points to an intrinsic + * property (in which case nodeLinks.jsxFlags will be IntrinsicNamedElement) or an intrinsic + * string index signature (in which case nodeLinks.jsxFlags will be IntrinsicIndexedElement). + * May also return unknownSymbol if both of these lookups fail. + */ + function getIntrinsicTagSymbol(node) { + var links = getNodeLinks(node); + if (!links.resolvedSymbol) { + var intrinsicElementsType = getJsxType(JsxNames.IntrinsicElements, node); + if (intrinsicElementsType !== errorType) { + // Property case + if (!ts.isIdentifier(node.tagName)) + return ts.Debug.fail(); + var intrinsicProp = getPropertyOfType(intrinsicElementsType, node.tagName.escapedText); + if (intrinsicProp) { + links.jsxFlags |= 1 /* IntrinsicNamedElement */; + return links.resolvedSymbol = intrinsicProp; + } + // Intrinsic string indexer case + var indexSignatureType = getIndexTypeOfType(intrinsicElementsType, 0 /* String */); + if (indexSignatureType) { + links.jsxFlags |= 2 /* IntrinsicIndexedElement */; + return links.resolvedSymbol = intrinsicElementsType.symbol; + } + // Wasn't found + error(node, ts.Diagnostics.Property_0_does_not_exist_on_type_1, ts.idText(node.tagName), "JSX." + JsxNames.IntrinsicElements); + return links.resolvedSymbol = unknownSymbol; + } + else { + if (noImplicitAny) { + error(node, ts.Diagnostics.JSX_element_implicitly_has_type_any_because_no_interface_JSX_0_exists, ts.unescapeLeadingUnderscores(JsxNames.IntrinsicElements)); + } + return links.resolvedSymbol = unknownSymbol; + } + } + return links.resolvedSymbol; + } + function getJsxNamespaceAt(location) { + var links = location && getNodeLinks(location); + if (links && links.jsxNamespace) { + return links.jsxNamespace; + } + if (!links || links.jsxNamespace !== false) { + var namespaceName = getJsxNamespace(location); + var resolvedNamespace = resolveName(location, namespaceName, 1920 /* Namespace */, /*diagnosticMessage*/ undefined, namespaceName, /*isUse*/ false); + if (resolvedNamespace) { + var candidate = resolveSymbol(getSymbol(getExportsOfSymbol(resolveSymbol(resolvedNamespace)), JsxNames.JSX, 1920 /* Namespace */)); + if (candidate) { + if (links) { + links.jsxNamespace = candidate; + } + return candidate; + } + if (links) { + links.jsxNamespace = false; + } + } + } + // JSX global fallback + return getGlobalSymbol(JsxNames.JSX, 1920 /* Namespace */, /*diagnosticMessage*/ undefined); // TODO: GH#18217 + } + /** + * Look into JSX namespace and then look for container with matching name as nameOfAttribPropContainer. + * Get a single property from that container if existed. Report an error if there are more than one property. + * + * @param nameOfAttribPropContainer a string of value JsxNames.ElementAttributesPropertyNameContainer or JsxNames.ElementChildrenAttributeNameContainer + * if other string is given or the container doesn't exist, return undefined. + */ + function getNameFromJsxElementAttributesContainer(nameOfAttribPropContainer, jsxNamespace) { + // JSX.ElementAttributesProperty | JSX.ElementChildrenAttribute [symbol] + var jsxElementAttribPropInterfaceSym = jsxNamespace && getSymbol(jsxNamespace.exports, nameOfAttribPropContainer, 788968 /* Type */); + // JSX.ElementAttributesProperty | JSX.ElementChildrenAttribute [type] + var jsxElementAttribPropInterfaceType = jsxElementAttribPropInterfaceSym && getDeclaredTypeOfSymbol(jsxElementAttribPropInterfaceSym); + // The properties of JSX.ElementAttributesProperty | JSX.ElementChildrenAttribute + var propertiesOfJsxElementAttribPropInterface = jsxElementAttribPropInterfaceType && getPropertiesOfType(jsxElementAttribPropInterfaceType); + if (propertiesOfJsxElementAttribPropInterface) { + // Element Attributes has zero properties, so the element attributes type will be the class instance type + if (propertiesOfJsxElementAttribPropInterface.length === 0) { + return ""; + } + // Element Attributes has one property, so the element attributes type will be the type of the corresponding + // property of the class instance type + else if (propertiesOfJsxElementAttribPropInterface.length === 1) { + return propertiesOfJsxElementAttribPropInterface[0].escapedName; + } + else if (propertiesOfJsxElementAttribPropInterface.length > 1) { + // More than one property on ElementAttributesProperty is an error + error(jsxElementAttribPropInterfaceSym.declarations[0], ts.Diagnostics.The_global_type_JSX_0_may_not_have_more_than_one_property, ts.unescapeLeadingUnderscores(nameOfAttribPropContainer)); + } + } + return undefined; + } + function getJsxLibraryManagedAttributes(jsxNamespace) { + // JSX.LibraryManagedAttributes [symbol] + return jsxNamespace && getSymbol(jsxNamespace.exports, JsxNames.LibraryManagedAttributes, 788968 /* Type */); + } + /// e.g. "props" for React.d.ts, + /// or 'undefined' if ElementAttributesProperty doesn't exist (which means all + /// non-intrinsic elements' attributes type is 'any'), + /// or '' if it has 0 properties (which means every + /// non-intrinsic elements' attributes type is the element instance type) + function getJsxElementPropertiesName(jsxNamespace) { + return getNameFromJsxElementAttributesContainer(JsxNames.ElementAttributesPropertyNameContainer, jsxNamespace); + } + function getJsxElementChildrenPropertyName(jsxNamespace) { + return getNameFromJsxElementAttributesContainer(JsxNames.ElementChildrenAttributeNameContainer, jsxNamespace); + } + function getUninstantiatedJsxSignaturesOfType(elementType, caller) { + if (elementType.flags & 4 /* String */) { + return [anySignature]; + } + else if (elementType.flags & 128 /* StringLiteral */) { + var intrinsicType = getIntrinsicAttributesTypeFromStringLiteralType(elementType, caller); + if (!intrinsicType) { + error(caller, ts.Diagnostics.Property_0_does_not_exist_on_type_1, elementType.value, "JSX." + JsxNames.IntrinsicElements); + return ts.emptyArray; + } + else { + var fakeSignature = createSignatureForJSXIntrinsic(caller, intrinsicType); + return [fakeSignature]; + } + } + var apparentElemType = getApparentType(elementType); + // Resolve the signatures, preferring constructor + var signatures = getSignaturesOfType(apparentElemType, 1 /* Construct */); + if (signatures.length === 0) { + // No construct signatures, try call signatures + signatures = getSignaturesOfType(apparentElemType, 0 /* Call */); + } + if (signatures.length === 0 && apparentElemType.flags & 1048576 /* Union */) { + // If each member has some combination of new/call signatures; make a union signature list for those + signatures = getUnionSignatures(ts.map(apparentElemType.types, function (t) { return getUninstantiatedJsxSignaturesOfType(t, caller); })); + } + return signatures; + } + function getIntrinsicAttributesTypeFromStringLiteralType(type, location) { + // If the elemType is a stringLiteral type, we can then provide a check to make sure that the string literal type is one of the Jsx intrinsic element type + // For example: + // var CustomTag: "h1" = "h1"; + // Hello World + var intrinsicElementsType = getJsxType(JsxNames.IntrinsicElements, location); + if (intrinsicElementsType !== errorType) { + var stringLiteralTypeName = type.value; + var intrinsicProp = getPropertyOfType(intrinsicElementsType, ts.escapeLeadingUnderscores(stringLiteralTypeName)); + if (intrinsicProp) { + return getTypeOfSymbol(intrinsicProp); + } + var indexSignatureType = getIndexTypeOfType(intrinsicElementsType, 0 /* String */); + if (indexSignatureType) { + return indexSignatureType; + } + return undefined; + } + // If we need to report an error, we already done so here. So just return any to prevent any more error downstream + return anyType; + } + function checkJsxReturnAssignableToAppropriateBound(refKind, elemInstanceType, openingLikeElement) { + if (refKind === 1 /* Function */) { + var sfcReturnConstraint = getJsxStatelessElementTypeAt(openingLikeElement); + if (sfcReturnConstraint) { + checkTypeRelatedTo(elemInstanceType, sfcReturnConstraint, assignableRelation, openingLikeElement.tagName, ts.Diagnostics.Its_return_type_0_is_not_a_valid_JSX_element, generateInitialErrorChain); + } + } + else if (refKind === 0 /* Component */) { + var classConstraint = getJsxElementClassTypeAt(openingLikeElement); + if (classConstraint) { + // Issue an error if this return type isn't assignable to JSX.ElementClass, failing that + checkTypeRelatedTo(elemInstanceType, classConstraint, assignableRelation, openingLikeElement.tagName, ts.Diagnostics.Its_instance_type_0_is_not_a_valid_JSX_element, generateInitialErrorChain); + } + } + else { // Mixed + var sfcReturnConstraint = getJsxStatelessElementTypeAt(openingLikeElement); + var classConstraint = getJsxElementClassTypeAt(openingLikeElement); + if (!sfcReturnConstraint || !classConstraint) { + return; + } + var combined = getUnionType([sfcReturnConstraint, classConstraint]); + checkTypeRelatedTo(elemInstanceType, combined, assignableRelation, openingLikeElement.tagName, ts.Diagnostics.Its_element_type_0_is_not_a_valid_JSX_element, generateInitialErrorChain); + } + function generateInitialErrorChain() { + var componentName = ts.getTextOfNode(openingLikeElement.tagName); + return ts.chainDiagnosticMessages(/* details */ undefined, ts.Diagnostics._0_cannot_be_used_as_a_JSX_component, componentName); + } + } + /** + * Get attributes type of the given intrinsic opening-like Jsx element by resolving the tag name. + * The function is intended to be called from a function which has checked that the opening element is an intrinsic element. + * @param node an intrinsic JSX opening-like element + */ + function getIntrinsicAttributesTypeFromJsxOpeningLikeElement(node) { + ts.Debug.assert(isJsxIntrinsicIdentifier(node.tagName)); + var links = getNodeLinks(node); + if (!links.resolvedJsxElementAttributesType) { + var symbol = getIntrinsicTagSymbol(node); + if (links.jsxFlags & 1 /* IntrinsicNamedElement */) { + return links.resolvedJsxElementAttributesType = getTypeOfSymbol(symbol); + } + else if (links.jsxFlags & 2 /* IntrinsicIndexedElement */) { + return links.resolvedJsxElementAttributesType = + getIndexTypeOfType(getDeclaredTypeOfSymbol(symbol), 0 /* String */); + } + else { + return links.resolvedJsxElementAttributesType = errorType; + } + } + return links.resolvedJsxElementAttributesType; + } + function getJsxElementClassTypeAt(location) { + var type = getJsxType(JsxNames.ElementClass, location); + if (type === errorType) + return undefined; + return type; + } + function getJsxElementTypeAt(location) { + return getJsxType(JsxNames.Element, location); + } + function getJsxStatelessElementTypeAt(location) { + var jsxElementType = getJsxElementTypeAt(location); + if (jsxElementType) { + return getUnionType([jsxElementType, nullType]); + } + } + /** + * Returns all the properties of the Jsx.IntrinsicElements interface + */ + function getJsxIntrinsicTagNamesAt(location) { + var intrinsics = getJsxType(JsxNames.IntrinsicElements, location); + return intrinsics ? getPropertiesOfType(intrinsics) : ts.emptyArray; + } + function checkJsxPreconditions(errorNode) { + // Preconditions for using JSX + if ((compilerOptions.jsx || 0 /* None */) === 0 /* None */) { + error(errorNode, ts.Diagnostics.Cannot_use_JSX_unless_the_jsx_flag_is_provided); + } + if (getJsxElementTypeAt(errorNode) === undefined) { + if (noImplicitAny) { + error(errorNode, ts.Diagnostics.JSX_element_implicitly_has_type_any_because_the_global_type_JSX_Element_does_not_exist); + } + } + } + function checkJsxOpeningLikeElementOrOpeningFragment(node) { + var isNodeOpeningLikeElement = ts.isJsxOpeningLikeElement(node); + if (isNodeOpeningLikeElement) { + checkGrammarJsxElement(node); + } + checkJsxPreconditions(node); + // The reactNamespace/jsxFactory's root symbol should be marked as 'used' so we don't incorrectly elide its import. + // And if there is no reactNamespace/jsxFactory's symbol in scope when targeting React emit, we should issue an error. + var reactRefErr = diagnostics && compilerOptions.jsx === 2 /* React */ ? ts.Diagnostics.Cannot_find_name_0 : undefined; + var reactNamespace = getJsxNamespace(node); + var reactLocation = isNodeOpeningLikeElement ? node.tagName : node; + var reactSym = resolveName(reactLocation, reactNamespace, 111551 /* Value */, reactRefErr, reactNamespace, /*isUse*/ true); + if (reactSym) { + // Mark local symbol as referenced here because it might not have been marked + // if jsx emit was not react as there wont be error being emitted + reactSym.isReferenced = 67108863 /* All */; + // If react symbol is alias, mark it as refereced + if (reactSym.flags & 2097152 /* Alias */ && !getTypeOnlyAliasDeclaration(reactSym)) { + markAliasSymbolAsReferenced(reactSym); + } + } + if (isNodeOpeningLikeElement) { + var jsxOpeningLikeNode = node; + var sig = getResolvedSignature(jsxOpeningLikeNode); + checkJsxReturnAssignableToAppropriateBound(getJsxReferenceKind(jsxOpeningLikeNode), getReturnTypeOfSignature(sig), jsxOpeningLikeNode); + } + } + /** + * Check if a property with the given name is known anywhere in the given type. In an object type, a property + * is considered known if + * 1. the object type is empty and the check is for assignability, or + * 2. if the object type has index signatures, or + * 3. if the property is actually declared in the object type + * (this means that 'toString', for example, is not usually a known property). + * 4. In a union or intersection type, + * a property is considered known if it is known in any constituent type. + * @param targetType a type to search a given name in + * @param name a property name to search + * @param isComparingJsxAttributes a boolean flag indicating whether we are searching in JsxAttributesType + */ + function isKnownProperty(targetType, name, isComparingJsxAttributes) { + if (targetType.flags & 524288 /* Object */) { + var resolved = resolveStructuredTypeMembers(targetType); + if (resolved.stringIndexInfo || + resolved.numberIndexInfo && isNumericLiteralName(name) || + getPropertyOfObjectType(targetType, name) || + isComparingJsxAttributes && !isUnhyphenatedJsxName(name)) { + // For JSXAttributes, if the attribute has a hyphenated name, consider that the attribute to be known. + return true; + } + } + else if (targetType.flags & 3145728 /* UnionOrIntersection */ && isExcessPropertyCheckTarget(targetType)) { + for (var _i = 0, _a = targetType.types; _i < _a.length; _i++) { + var t = _a[_i]; + if (isKnownProperty(t, name, isComparingJsxAttributes)) { + return true; + } + } + } + return false; + } + function isExcessPropertyCheckTarget(type) { + return !!(type.flags & 524288 /* Object */ && !(ts.getObjectFlags(type) & 512 /* ObjectLiteralPatternWithComputedProperties */) || + type.flags & 67108864 /* NonPrimitive */ || + type.flags & 1048576 /* Union */ && ts.some(type.types, isExcessPropertyCheckTarget) || + type.flags & 2097152 /* Intersection */ && ts.every(type.types, isExcessPropertyCheckTarget)); + } + function checkJsxExpression(node, checkMode) { + checkGrammarJsxExpression(node); + if (node.expression) { + var type = checkExpression(node.expression, checkMode); + if (node.dotDotDotToken && type !== anyType && !isArrayType(type)) { + error(node, ts.Diagnostics.JSX_spread_child_must_be_an_array_type); + } + return type; + } + else { + return errorType; + } + } + function getDeclarationNodeFlagsFromSymbol(s) { + return s.valueDeclaration ? ts.getCombinedNodeFlags(s.valueDeclaration) : 0; + } + /** + * Return whether this symbol is a member of a prototype somewhere + * Note that this is not tracked well within the compiler, so the answer may be incorrect. + */ + function isPrototypeProperty(symbol) { + if (symbol.flags & 8192 /* Method */ || ts.getCheckFlags(symbol) & 4 /* SyntheticMethod */) { + return true; + } + if (ts.isInJSFile(symbol.valueDeclaration)) { + var parent = symbol.valueDeclaration.parent; + return parent && ts.isBinaryExpression(parent) && + ts.getAssignmentDeclarationKind(parent) === 3 /* PrototypeProperty */; + } + } + /** + * Check whether the requested property access is valid. + * Returns true if node is a valid property access, and false otherwise. + * @param node The node to be checked. + * @param isSuper True if the access is from `super.`. + * @param type The type of the object whose property is being accessed. (Not the type of the property.) + * @param prop The symbol for the property being accessed. + */ + function checkPropertyAccessibility(node, isSuper, type, prop) { + var flags = ts.getDeclarationModifierFlagsFromSymbol(prop); + var errorNode = node.kind === 153 /* QualifiedName */ ? node.right : node.kind === 188 /* ImportType */ ? node : node.name; + if (isSuper) { + // TS 1.0 spec (April 2014): 4.8.2 + // - In a constructor, instance member function, instance member accessor, or + // instance member variable initializer where this references a derived class instance, + // a super property access is permitted and must specify a public instance member function of the base class. + // - In a static member function or static member accessor + // where this references the constructor function object of a derived class, + // a super property access is permitted and must specify a public static member function of the base class. + if (languageVersion < 2 /* ES2015 */) { + if (symbolHasNonMethodDeclaration(prop)) { + error(errorNode, ts.Diagnostics.Only_public_and_protected_methods_of_the_base_class_are_accessible_via_the_super_keyword); + return false; + } + } + if (flags & 128 /* Abstract */) { + // A method cannot be accessed in a super property access if the method is abstract. + // This error could mask a private property access error. But, a member + // cannot simultaneously be private and abstract, so this will trigger an + // additional error elsewhere. + error(errorNode, ts.Diagnostics.Abstract_method_0_in_class_1_cannot_be_accessed_via_super_expression, symbolToString(prop), typeToString(getDeclaringClass(prop))); + return false; + } + } + // Referencing abstract properties within their own constructors is not allowed + if ((flags & 128 /* Abstract */) && ts.isThisProperty(node) && symbolHasNonMethodDeclaration(prop)) { + var declaringClassDeclaration = ts.getClassLikeDeclarationOfSymbol(getParentOfSymbol(prop)); + if (declaringClassDeclaration && isNodeUsedDuringClassInitialization(node)) { + error(errorNode, ts.Diagnostics.Abstract_property_0_in_class_1_cannot_be_accessed_in_the_constructor, symbolToString(prop), ts.getTextOfIdentifierOrLiteral(declaringClassDeclaration.name)); // TODO: GH#18217 + return false; + } + } + if (ts.isPropertyAccessExpression(node) && ts.isPrivateIdentifier(node.name)) { + if (!ts.getContainingClass(node)) { + error(errorNode, ts.Diagnostics.Private_identifiers_are_not_allowed_outside_class_bodies); + return false; + } + return true; + } + // Public properties are otherwise accessible. + if (!(flags & 24 /* NonPublicAccessibilityModifier */)) { + return true; + } + // Property is known to be private or protected at this point + // Private property is accessible if the property is within the declaring class + if (flags & 8 /* Private */) { + var declaringClassDeclaration = ts.getClassLikeDeclarationOfSymbol(getParentOfSymbol(prop)); + if (!isNodeWithinClass(node, declaringClassDeclaration)) { + error(errorNode, ts.Diagnostics.Property_0_is_private_and_only_accessible_within_class_1, symbolToString(prop), typeToString(getDeclaringClass(prop))); + return false; + } + return true; + } + // Property is known to be protected at this point + // All protected properties of a supertype are accessible in a super access + if (isSuper) { + return true; + } + // Find the first enclosing class that has the declaring classes of the protected constituents + // of the property as base classes + var enclosingClass = forEachEnclosingClass(node, function (enclosingDeclaration) { + var enclosingClass = getDeclaredTypeOfSymbol(getSymbolOfNode(enclosingDeclaration)); + return isClassDerivedFromDeclaringClasses(enclosingClass, prop) ? enclosingClass : undefined; + }); + // A protected property is accessible if the property is within the declaring class or classes derived from it + if (!enclosingClass) { + // allow PropertyAccessibility if context is in function with this parameter + // static member access is disallow + var thisParameter = void 0; + if (flags & 32 /* Static */ || !(thisParameter = getThisParameterFromNodeContext(node)) || !thisParameter.type) { + error(errorNode, ts.Diagnostics.Property_0_is_protected_and_only_accessible_within_class_1_and_its_subclasses, symbolToString(prop), typeToString(getDeclaringClass(prop) || type)); + return false; + } + var thisType = getTypeFromTypeNode(thisParameter.type); + enclosingClass = ((thisType.flags & 262144 /* TypeParameter */) ? getConstraintOfTypeParameter(thisType) : thisType).target; + } + // No further restrictions for static properties + if (flags & 32 /* Static */) { + return true; + } + if (type.flags & 262144 /* TypeParameter */) { + // get the original type -- represented as the type constraint of the 'this' type + type = type.isThisType ? getConstraintOfTypeParameter(type) : getBaseConstraintOfType(type); // TODO: GH#18217 Use a different variable that's allowed to be undefined + } + if (!type || !hasBaseType(type, enclosingClass)) { + error(errorNode, ts.Diagnostics.Property_0_is_protected_and_only_accessible_through_an_instance_of_class_1, symbolToString(prop), typeToString(enclosingClass)); + return false; + } + return true; + } + function getThisParameterFromNodeContext(node) { + var thisContainer = ts.getThisContainer(node, /* includeArrowFunctions */ false); + return thisContainer && ts.isFunctionLike(thisContainer) ? ts.getThisParameter(thisContainer) : undefined; + } + function symbolHasNonMethodDeclaration(symbol) { + return !!forEachProperty(symbol, function (prop) { return !(prop.flags & 8192 /* Method */); }); + } + function checkNonNullExpression(node) { + return checkNonNullType(checkExpression(node), node); + } + function isNullableType(type) { + return !!((strictNullChecks ? getFalsyFlags(type) : type.flags) & 98304 /* Nullable */); + } + function getNonNullableTypeIfNeeded(type) { + return isNullableType(type) ? getNonNullableType(type) : type; + } + function reportObjectPossiblyNullOrUndefinedError(node, flags) { + error(node, flags & 32768 /* Undefined */ ? flags & 65536 /* Null */ ? + ts.Diagnostics.Object_is_possibly_null_or_undefined : + ts.Diagnostics.Object_is_possibly_undefined : + ts.Diagnostics.Object_is_possibly_null); + } + function reportCannotInvokePossiblyNullOrUndefinedError(node, flags) { + error(node, flags & 32768 /* Undefined */ ? flags & 65536 /* Null */ ? + ts.Diagnostics.Cannot_invoke_an_object_which_is_possibly_null_or_undefined : + ts.Diagnostics.Cannot_invoke_an_object_which_is_possibly_undefined : + ts.Diagnostics.Cannot_invoke_an_object_which_is_possibly_null); + } + function checkNonNullTypeWithReporter(type, node, reportError) { + if (strictNullChecks && type.flags & 2 /* Unknown */) { + error(node, ts.Diagnostics.Object_is_of_type_unknown); + return errorType; + } + var kind = (strictNullChecks ? getFalsyFlags(type) : type.flags) & 98304 /* Nullable */; + if (kind) { + reportError(node, kind); + var t = getNonNullableType(type); + return t.flags & (98304 /* Nullable */ | 131072 /* Never */) ? errorType : t; + } + return type; + } + function checkNonNullType(type, node) { + return checkNonNullTypeWithReporter(type, node, reportObjectPossiblyNullOrUndefinedError); + } + function checkNonNullNonVoidType(type, node) { + var nonNullType = checkNonNullType(type, node); + if (nonNullType !== errorType && nonNullType.flags & 16384 /* Void */) { + error(node, ts.Diagnostics.Object_is_possibly_undefined); + } + return nonNullType; + } + function checkPropertyAccessExpression(node) { + return node.flags & 32 /* OptionalChain */ ? checkPropertyAccessChain(node) : + checkPropertyAccessExpressionOrQualifiedName(node, node.expression, checkNonNullExpression(node.expression), node.name); + } + function checkPropertyAccessChain(node) { + var leftType = checkExpression(node.expression); + var nonOptionalType = getOptionalExpressionType(leftType, node.expression); + return propagateOptionalTypeMarker(checkPropertyAccessExpressionOrQualifiedName(node, node.expression, checkNonNullType(nonOptionalType, node.expression), node.name), node, nonOptionalType !== leftType); + } + function checkQualifiedName(node) { + return checkPropertyAccessExpressionOrQualifiedName(node, node.left, checkNonNullExpression(node.left), node.right); + } + function isMethodAccessForCall(node) { + while (node.parent.kind === 200 /* ParenthesizedExpression */) { + node = node.parent; + } + return ts.isCallOrNewExpression(node.parent) && node.parent.expression === node; + } + // Lookup the private identifier lexically. + function lookupSymbolForPrivateIdentifierDeclaration(propName, location) { + for (var containingClass = ts.getContainingClass(location); !!containingClass; containingClass = ts.getContainingClass(containingClass)) { + var symbol = containingClass.symbol; + var name = ts.getSymbolNameForPrivateIdentifier(symbol, propName); + var prop = (symbol.members && symbol.members.get(name)) || (symbol.exports && symbol.exports.get(name)); + if (prop) { + return prop; + } + } + } + function getPrivateIdentifierPropertyOfType(leftType, lexicallyScopedIdentifier) { + return getPropertyOfType(leftType, lexicallyScopedIdentifier.escapedName); + } + function checkPrivateIdentifierPropertyAccess(leftType, right, lexicallyScopedIdentifier) { + // Either the identifier could not be looked up in the lexical scope OR the lexically scoped identifier did not exist on the type. + // Find a private identifier with the same description on the type. + var propertyOnType; + var properties = getPropertiesOfType(leftType); + if (properties) { + ts.forEach(properties, function (symbol) { + var decl = symbol.valueDeclaration; + if (decl && ts.isNamedDeclaration(decl) && ts.isPrivateIdentifier(decl.name) && decl.name.escapedText === right.escapedText) { + propertyOnType = symbol; + return true; + } + }); + } + var diagName = diagnosticName(right); + if (propertyOnType) { + var typeValueDecl = propertyOnType.valueDeclaration; + var typeClass_1 = ts.getContainingClass(typeValueDecl); + ts.Debug.assert(!!typeClass_1); + // We found a private identifier property with the same description. + // Either: + // - There is a lexically scoped private identifier AND it shadows the one we found on the type. + // - It is an attempt to access the private identifier outside of the class. + if (lexicallyScopedIdentifier) { + var lexicalValueDecl = lexicallyScopedIdentifier.valueDeclaration; + var lexicalClass = ts.getContainingClass(lexicalValueDecl); + ts.Debug.assert(!!lexicalClass); + if (ts.findAncestor(lexicalClass, function (n) { return typeClass_1 === n; })) { + var diagnostic = error(right, ts.Diagnostics.The_property_0_cannot_be_accessed_on_type_1_within_this_class_because_it_is_shadowed_by_another_private_identifier_with_the_same_spelling, diagName, typeToString(leftType)); + ts.addRelatedInfo(diagnostic, ts.createDiagnosticForNode(lexicalValueDecl, ts.Diagnostics.The_shadowing_declaration_of_0_is_defined_here, diagName), ts.createDiagnosticForNode(typeValueDecl, ts.Diagnostics.The_declaration_of_0_that_you_probably_intended_to_use_is_defined_here, diagName)); + return true; + } + } + error(right, ts.Diagnostics.Property_0_is_not_accessible_outside_class_1_because_it_has_a_private_identifier, diagName, diagnosticName(typeClass_1.name || anon)); + return true; + } + return false; + } + function checkPropertyAccessExpressionOrQualifiedName(node, left, leftType, right) { + var parentSymbol = getNodeLinks(left).resolvedSymbol; + var assignmentKind = ts.getAssignmentTargetKind(node); + var apparentType = getApparentType(assignmentKind !== 0 /* None */ || isMethodAccessForCall(node) ? getWidenedType(leftType) : leftType); + if (ts.isPrivateIdentifier(right)) { + checkExternalEmitHelpers(node, 262144 /* ClassPrivateFieldGet */); + } + var isAnyLike = isTypeAny(apparentType) || apparentType === silentNeverType; + var prop; + if (ts.isPrivateIdentifier(right)) { + var lexicallyScopedSymbol = lookupSymbolForPrivateIdentifierDeclaration(right.escapedText, right); + if (isAnyLike) { + if (lexicallyScopedSymbol) { + return apparentType; + } + if (!ts.getContainingClass(right)) { + grammarErrorOnNode(right, ts.Diagnostics.Private_identifiers_are_not_allowed_outside_class_bodies); + return anyType; + } + } + prop = lexicallyScopedSymbol ? getPrivateIdentifierPropertyOfType(leftType, lexicallyScopedSymbol) : undefined; + // Check for private-identifier-specific shadowing and lexical-scoping errors. + if (!prop && checkPrivateIdentifierPropertyAccess(leftType, right, lexicallyScopedSymbol)) { + return errorType; + } + } + else { + if (isAnyLike) { + if (ts.isIdentifier(left) && parentSymbol) { + markAliasReferenced(parentSymbol, node); + } + return apparentType; + } + prop = getPropertyOfType(apparentType, right.escapedText); + } + if (ts.isIdentifier(left) && parentSymbol && !(prop && isConstEnumOrConstEnumOnlyModule(prop))) { + markAliasReferenced(parentSymbol, node); + } + var propType; + if (!prop) { + var indexInfo = !ts.isPrivateIdentifier(right) && (assignmentKind === 0 /* None */ || !isGenericObjectType(leftType) || isThisTypeParameter(leftType)) ? getIndexInfoOfType(apparentType, 0 /* String */) : undefined; + if (!(indexInfo && indexInfo.type)) { + if (isJSLiteralType(leftType)) { + return anyType; + } + if (leftType.symbol === globalThisSymbol) { + if (globalThisSymbol.exports.has(right.escapedText) && (globalThisSymbol.exports.get(right.escapedText).flags & 418 /* BlockScoped */)) { + error(right, ts.Diagnostics.Property_0_does_not_exist_on_type_1, ts.unescapeLeadingUnderscores(right.escapedText), typeToString(leftType)); + } + else if (noImplicitAny) { + error(right, ts.Diagnostics.Element_implicitly_has_an_any_type_because_type_0_has_no_index_signature, typeToString(leftType)); + } + return anyType; + } + if (right.escapedText && !checkAndReportErrorForExtendingInterface(node)) { + reportNonexistentProperty(right, isThisTypeParameter(leftType) ? apparentType : leftType); + } + return errorType; + } + if (indexInfo.isReadonly && (ts.isAssignmentTarget(node) || ts.isDeleteTarget(node))) { + error(node, ts.Diagnostics.Index_signature_in_type_0_only_permits_reading, typeToString(apparentType)); + } + propType = indexInfo.type; + } + else { + checkPropertyNotUsedBeforeDeclaration(prop, node, right); + markPropertyAsReferenced(prop, node, left.kind === 104 /* ThisKeyword */); + getNodeLinks(node).resolvedSymbol = prop; + checkPropertyAccessibility(node, left.kind === 102 /* SuperKeyword */, apparentType, prop); + if (isAssignmentToReadonlyEntity(node, prop, assignmentKind)) { + error(right, ts.Diagnostics.Cannot_assign_to_0_because_it_is_a_read_only_property, ts.idText(right)); + return errorType; + } + propType = getConstraintForLocation(getTypeOfSymbol(prop), node); + } + return getFlowTypeOfAccessExpression(node, prop, propType, right); + } + function getFlowTypeOfAccessExpression(node, prop, propType, errorNode) { + // Only compute control flow type if this is a property access expression that isn't an + // assignment target, and the referenced property was declared as a variable, property, + // accessor, or optional method. + var assignmentKind = ts.getAssignmentTargetKind(node); + if (!ts.isAccessExpression(node) || + assignmentKind === 1 /* Definite */ || + prop && !(prop.flags & (3 /* Variable */ | 4 /* Property */ | 98304 /* Accessor */)) && !(prop.flags & 8192 /* Method */ && propType.flags & 1048576 /* Union */)) { + return propType; + } + // If strict null checks and strict property initialization checks are enabled, if we have + // a this.xxx property access, if the property is an instance property without an initializer, + // and if we are in a constructor of the same class as the property declaration, assume that + // the property is uninitialized at the top of the control flow. + var assumeUninitialized = false; + if (strictNullChecks && strictPropertyInitialization && node.expression.kind === 104 /* ThisKeyword */) { + var declaration = prop && prop.valueDeclaration; + if (declaration && isInstancePropertyWithoutInitializer(declaration)) { + var flowContainer = getControlFlowContainer(node); + if (flowContainer.kind === 162 /* Constructor */ && flowContainer.parent === declaration.parent && !(declaration.flags & 8388608 /* Ambient */)) { + assumeUninitialized = true; + } + } + } + else if (strictNullChecks && prop && prop.valueDeclaration && + ts.isPropertyAccessExpression(prop.valueDeclaration) && + ts.getAssignmentDeclarationPropertyAccessKind(prop.valueDeclaration) && + getControlFlowContainer(node) === getControlFlowContainer(prop.valueDeclaration)) { + assumeUninitialized = true; + } + var flowType = getFlowTypeOfReference(node, propType, assumeUninitialized ? getOptionalType(propType) : propType); + if (assumeUninitialized && !(getFalsyFlags(propType) & 32768 /* Undefined */) && getFalsyFlags(flowType) & 32768 /* Undefined */) { + error(errorNode, ts.Diagnostics.Property_0_is_used_before_being_assigned, symbolToString(prop)); // TODO: GH#18217 + // Return the declared type to reduce follow-on errors + return propType; + } + return assignmentKind ? getBaseTypeOfLiteralType(flowType) : flowType; + } + function checkPropertyNotUsedBeforeDeclaration(prop, node, right) { + var valueDeclaration = prop.valueDeclaration; + if (!valueDeclaration || ts.getSourceFileOfNode(node).isDeclarationFile) { + return; + } + var diagnosticMessage; + var declarationName = ts.idText(right); + if (isInPropertyInitializer(node) + && !(ts.isAccessExpression(node) && ts.isAccessExpression(node.expression)) + && !isBlockScopedNameDeclaredBeforeUse(valueDeclaration, right) + && !isPropertyDeclaredInAncestorClass(prop)) { + diagnosticMessage = error(right, ts.Diagnostics.Property_0_is_used_before_its_initialization, declarationName); + } + else if (valueDeclaration.kind === 245 /* ClassDeclaration */ && + node.parent.kind !== 169 /* TypeReference */ && + !(valueDeclaration.flags & 8388608 /* Ambient */) && + !isBlockScopedNameDeclaredBeforeUse(valueDeclaration, right)) { + diagnosticMessage = error(right, ts.Diagnostics.Class_0_used_before_its_declaration, declarationName); + } + if (diagnosticMessage) { + ts.addRelatedInfo(diagnosticMessage, ts.createDiagnosticForNode(valueDeclaration, ts.Diagnostics._0_is_declared_here, declarationName)); + } + } + function isInPropertyInitializer(node) { + return !!ts.findAncestor(node, function (node) { + switch (node.kind) { + case 159 /* PropertyDeclaration */: + return true; + case 281 /* PropertyAssignment */: + case 161 /* MethodDeclaration */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + case 283 /* SpreadAssignment */: + case 154 /* ComputedPropertyName */: + case 221 /* TemplateSpan */: + case 276 /* JsxExpression */: + case 273 /* JsxAttribute */: + case 274 /* JsxAttributes */: + case 275 /* JsxSpreadAttribute */: + case 268 /* JsxOpeningElement */: + case 216 /* ExpressionWithTypeArguments */: + case 279 /* HeritageClause */: + return false; + default: + return ts.isExpressionNode(node) ? false : "quit"; + } + }); + } + /** + * It's possible that "prop.valueDeclaration" is a local declaration, but the property was also declared in a superclass. + * In that case we won't consider it used before its declaration, because it gets its value from the superclass' declaration. + */ + function isPropertyDeclaredInAncestorClass(prop) { + if (!(prop.parent.flags & 32 /* Class */)) { + return false; + } + var classType = getTypeOfSymbol(prop.parent); + while (true) { + classType = classType.symbol && getSuperClass(classType); + if (!classType) { + return false; + } + var superProperty = getPropertyOfType(classType, prop.escapedName); + if (superProperty && superProperty.valueDeclaration) { + return true; + } + } + } + function getSuperClass(classType) { + var x = getBaseTypes(classType); + if (x.length === 0) { + return undefined; + } + return getIntersectionType(x); + } + function reportNonexistentProperty(propNode, containingType) { + var errorInfo; + var relatedInfo; + if (!ts.isPrivateIdentifier(propNode) && containingType.flags & 1048576 /* Union */ && !(containingType.flags & 131068 /* Primitive */)) { + for (var _i = 0, _a = containingType.types; _i < _a.length; _i++) { + var subtype = _a[_i]; + if (!getPropertyOfType(subtype, propNode.escapedText) && !getIndexInfoOfType(subtype, 0 /* String */)) { + errorInfo = ts.chainDiagnosticMessages(errorInfo, ts.Diagnostics.Property_0_does_not_exist_on_type_1, ts.declarationNameToString(propNode), typeToString(subtype)); + break; + } + } + } + if (typeHasStaticProperty(propNode.escapedText, containingType)) { + errorInfo = ts.chainDiagnosticMessages(errorInfo, ts.Diagnostics.Property_0_is_a_static_member_of_type_1, ts.declarationNameToString(propNode), typeToString(containingType)); + } + else { + var promisedType = getPromisedTypeOfPromise(containingType); + if (promisedType && getPropertyOfType(promisedType, propNode.escapedText)) { + errorInfo = ts.chainDiagnosticMessages(errorInfo, ts.Diagnostics.Property_0_does_not_exist_on_type_1, ts.declarationNameToString(propNode), typeToString(containingType)); + relatedInfo = ts.createDiagnosticForNode(propNode, ts.Diagnostics.Did_you_forget_to_use_await); + } + else { + var suggestion = getSuggestedSymbolForNonexistentProperty(propNode, containingType); + if (suggestion !== undefined) { + var suggestedName = ts.symbolName(suggestion); + errorInfo = ts.chainDiagnosticMessages(errorInfo, ts.Diagnostics.Property_0_does_not_exist_on_type_1_Did_you_mean_2, ts.declarationNameToString(propNode), typeToString(containingType), suggestedName); + relatedInfo = suggestion.valueDeclaration && ts.createDiagnosticForNode(suggestion.valueDeclaration, ts.Diagnostics._0_is_declared_here, suggestedName); + } + else { + errorInfo = ts.chainDiagnosticMessages(elaborateNeverIntersection(errorInfo, containingType), ts.Diagnostics.Property_0_does_not_exist_on_type_1, ts.declarationNameToString(propNode), typeToString(containingType)); + } + } + } + var resultDiagnostic = ts.createDiagnosticForNodeFromMessageChain(propNode, errorInfo); + if (relatedInfo) { + ts.addRelatedInfo(resultDiagnostic, relatedInfo); + } + diagnostics.add(resultDiagnostic); + } + function typeHasStaticProperty(propName, containingType) { + var prop = containingType.symbol && getPropertyOfType(getTypeOfSymbol(containingType.symbol), propName); + return prop !== undefined && prop.valueDeclaration && ts.hasModifier(prop.valueDeclaration, 32 /* Static */); + } + function getSuggestedSymbolForNonexistentProperty(name, containingType) { + return getSpellingSuggestionForName(ts.isString(name) ? name : ts.idText(name), getPropertiesOfType(containingType), 111551 /* Value */); + } + function getSuggestionForNonexistentProperty(name, containingType) { + var suggestion = getSuggestedSymbolForNonexistentProperty(name, containingType); + return suggestion && ts.symbolName(suggestion); + } + function getSuggestedSymbolForNonexistentSymbol(location, outerName, meaning) { + ts.Debug.assert(outerName !== undefined, "outername should always be defined"); + var result = resolveNameHelper(location, outerName, meaning, /*nameNotFoundMessage*/ undefined, outerName, /*isUse*/ false, /*excludeGlobals*/ false, function (symbols, name, meaning) { + ts.Debug.assertEqual(outerName, name, "name should equal outerName"); + var symbol = getSymbol(symbols, name, meaning); + // Sometimes the symbol is found when location is a return type of a function: `typeof x` and `x` is declared in the body of the function + // So the table *contains* `x` but `x` isn't actually in scope. + // However, resolveNameHelper will continue and call this callback again, so we'll eventually get a correct suggestion. + return symbol || getSpellingSuggestionForName(ts.unescapeLeadingUnderscores(name), ts.arrayFrom(symbols.values()), meaning); + }); + return result; + } + function getSuggestionForNonexistentSymbol(location, outerName, meaning) { + var symbolResult = getSuggestedSymbolForNonexistentSymbol(location, outerName, meaning); + return symbolResult && ts.symbolName(symbolResult); + } + function getSuggestedSymbolForNonexistentModule(name, targetModule) { + return targetModule.exports && getSpellingSuggestionForName(ts.idText(name), getExportsOfModuleAsArray(targetModule), 2623475 /* ModuleMember */); + } + function getSuggestionForNonexistentExport(name, targetModule) { + var suggestion = getSuggestedSymbolForNonexistentModule(name, targetModule); + return suggestion && ts.symbolName(suggestion); + } + function getSuggestionForNonexistentIndexSignature(objectType, expr, keyedType) { + // check if object type has setter or getter + function hasProp(name) { + var prop = getPropertyOfObjectType(objectType, name); + if (prop) { + var s = getSingleCallSignature(getTypeOfSymbol(prop)); + return !!s && getMinArgumentCount(s) >= 1 && isTypeAssignableTo(keyedType, getTypeAtPosition(s, 0)); + } + return false; + } + ; + var suggestedMethod = ts.isAssignmentTarget(expr) ? "set" : "get"; + if (!hasProp(suggestedMethod)) { + return undefined; + } + var suggestion = ts.tryGetPropertyAccessOrIdentifierToString(expr.expression); + if (suggestion === undefined) { + suggestion = suggestedMethod; + } + else { + suggestion += "." + suggestedMethod; + } + return suggestion; + } + /** + * Given a name and a list of symbols whose names are *not* equal to the name, return a spelling suggestion if there is one that is close enough. + * Names less than length 3 only check for case-insensitive equality, not levenshtein distance. + * + * If there is a candidate that's the same except for case, return that. + * If there is a candidate that's within one edit of the name, return that. + * Otherwise, return the candidate with the smallest Levenshtein distance, + * except for candidates: + * * With no name + * * Whose meaning doesn't match the `meaning` parameter. + * * Whose length differs from the target name by more than 0.34 of the length of the name. + * * Whose levenshtein distance is more than 0.4 of the length of the name + * (0.4 allows 1 substitution/transposition for every 5 characters, + * and 1 insertion/deletion at 3 characters) + */ + function getSpellingSuggestionForName(name, symbols, meaning) { + return ts.getSpellingSuggestion(name, symbols, getCandidateName); + function getCandidateName(candidate) { + var candidateName = ts.symbolName(candidate); + if (ts.startsWith(candidateName, "\"")) { + return undefined; + } + if (candidate.flags & meaning) { + return candidateName; + } + if (candidate.flags & 2097152 /* Alias */) { + var alias = tryResolveAlias(candidate); + if (alias && alias.flags & meaning) { + return candidateName; + } + } + return undefined; + } + } + function markPropertyAsReferenced(prop, nodeForCheckWriteOnly, isThisAccess) { + var valueDeclaration = prop && (prop.flags & 106500 /* ClassMember */) && prop.valueDeclaration; + if (!valueDeclaration) { + return; + } + var hasPrivateModifier = ts.hasModifier(valueDeclaration, 8 /* Private */); + var hasPrivateIdentifier = ts.isNamedDeclaration(prop.valueDeclaration) && ts.isPrivateIdentifier(prop.valueDeclaration.name); + if (!hasPrivateModifier && !hasPrivateIdentifier) { + return; + } + if (nodeForCheckWriteOnly && ts.isWriteOnlyAccess(nodeForCheckWriteOnly) && !(prop.flags & 65536 /* SetAccessor */)) { + return; + } + if (isThisAccess) { + // Find any FunctionLikeDeclaration because those create a new 'this' binding. But this should only matter for methods (or getters/setters). + var containingMethod = ts.findAncestor(nodeForCheckWriteOnly, ts.isFunctionLikeDeclaration); + if (containingMethod && containingMethod.symbol === prop) { + return; + } + } + (ts.getCheckFlags(prop) & 1 /* Instantiated */ ? getSymbolLinks(prop).target : prop).isReferenced = 67108863 /* All */; + } + function isValidPropertyAccess(node, propertyName) { + switch (node.kind) { + case 194 /* PropertyAccessExpression */: + return isValidPropertyAccessWithType(node, node.expression.kind === 102 /* SuperKeyword */, propertyName, getWidenedType(checkExpression(node.expression))); + case 153 /* QualifiedName */: + return isValidPropertyAccessWithType(node, /*isSuper*/ false, propertyName, getWidenedType(checkExpression(node.left))); + case 188 /* ImportType */: + return isValidPropertyAccessWithType(node, /*isSuper*/ false, propertyName, getTypeFromTypeNode(node)); + } + } + function isValidPropertyAccessForCompletions(node, type, property) { + return isValidPropertyAccessWithType(node, node.kind === 194 /* PropertyAccessExpression */ && node.expression.kind === 102 /* SuperKeyword */, property.escapedName, type); + // Previously we validated the 'this' type of methods but this adversely affected performance. See #31377 for more context. + } + function isValidPropertyAccessWithType(node, isSuper, propertyName, type) { + if (type === errorType || isTypeAny(type)) { + return true; + } + var prop = getPropertyOfType(type, propertyName); + if (prop) { + if (ts.isPropertyAccessExpression(node) && prop.valueDeclaration && ts.isPrivateIdentifierPropertyDeclaration(prop.valueDeclaration)) { + var declClass_1 = ts.getContainingClass(prop.valueDeclaration); + return !ts.isOptionalChain(node) && !!ts.findAncestor(node, function (parent) { return parent === declClass_1; }); + } + return checkPropertyAccessibility(node, isSuper, type, prop); + } + // In js files properties of unions are allowed in completion + return ts.isInJSFile(node) && (type.flags & 1048576 /* Union */) !== 0 && type.types.some(function (elementType) { return isValidPropertyAccessWithType(node, isSuper, propertyName, elementType); }); + } + /** + * Return the symbol of the for-in variable declared or referenced by the given for-in statement. + */ + function getForInVariableSymbol(node) { + var initializer = node.initializer; + if (initializer.kind === 243 /* VariableDeclarationList */) { + var variable = initializer.declarations[0]; + if (variable && !ts.isBindingPattern(variable.name)) { + return getSymbolOfNode(variable); + } + } + else if (initializer.kind === 75 /* Identifier */) { + return getResolvedSymbol(initializer); + } + return undefined; + } + /** + * Return true if the given type is considered to have numeric property names. + */ + function hasNumericPropertyNames(type) { + return getIndexTypeOfType(type, 1 /* Number */) && !getIndexTypeOfType(type, 0 /* String */); + } + /** + * Return true if given node is an expression consisting of an identifier (possibly parenthesized) + * that references a for-in variable for an object with numeric property names. + */ + function isForInVariableForNumericPropertyNames(expr) { + var e = ts.skipParentheses(expr); + if (e.kind === 75 /* Identifier */) { + var symbol = getResolvedSymbol(e); + if (symbol.flags & 3 /* Variable */) { + var child = expr; + var node = expr.parent; + while (node) { + if (node.kind === 231 /* ForInStatement */ && + child === node.statement && + getForInVariableSymbol(node) === symbol && + hasNumericPropertyNames(getTypeOfExpression(node.expression))) { + return true; + } + child = node; + node = node.parent; + } + } + } + return false; + } + function checkIndexedAccess(node) { + return node.flags & 32 /* OptionalChain */ ? checkElementAccessChain(node) : + checkElementAccessExpression(node, checkNonNullExpression(node.expression)); + } + function checkElementAccessChain(node) { + var exprType = checkExpression(node.expression); + var nonOptionalType = getOptionalExpressionType(exprType, node.expression); + return propagateOptionalTypeMarker(checkElementAccessExpression(node, checkNonNullType(nonOptionalType, node.expression)), node, nonOptionalType !== exprType); + } + function checkElementAccessExpression(node, exprType) { + var objectType = ts.getAssignmentTargetKind(node) !== 0 /* None */ || isMethodAccessForCall(node) ? getWidenedType(exprType) : exprType; + var indexExpression = node.argumentExpression; + var indexType = checkExpression(indexExpression); + if (objectType === errorType || objectType === silentNeverType) { + return objectType; + } + if (isConstEnumObjectType(objectType) && !ts.isStringLiteralLike(indexExpression)) { + error(indexExpression, ts.Diagnostics.A_const_enum_member_can_only_be_accessed_using_a_string_literal); + return errorType; + } + var effectiveIndexType = isForInVariableForNumericPropertyNames(indexExpression) ? numberType : indexType; + var accessFlags = ts.isAssignmentTarget(node) ? + 2 /* Writing */ | (isGenericObjectType(objectType) && !isThisTypeParameter(objectType) ? 1 /* NoIndexSignatures */ : 0) : + 0 /* None */; + var indexedAccessType = getIndexedAccessTypeOrUndefined(objectType, effectiveIndexType, node, accessFlags) || errorType; + return checkIndexedAccessIndexType(getFlowTypeOfAccessExpression(node, indexedAccessType.symbol, indexedAccessType, indexExpression), node); + } + function checkThatExpressionIsProperSymbolReference(expression, expressionType, reportError) { + if (expressionType === errorType) { + // There is already an error, so no need to report one. + return false; + } + if (!ts.isWellKnownSymbolSyntactically(expression)) { + return false; + } + // Make sure the property type is the primitive symbol type + if ((expressionType.flags & 12288 /* ESSymbolLike */) === 0) { + if (reportError) { + error(expression, ts.Diagnostics.A_computed_property_name_of_the_form_0_must_be_of_type_symbol, ts.getTextOfNode(expression)); + } + return false; + } + // The name is Symbol., so make sure Symbol actually resolves to the + // global Symbol object + var leftHandSide = expression.expression; + var leftHandSideSymbol = getResolvedSymbol(leftHandSide); + if (!leftHandSideSymbol) { + return false; + } + var globalESSymbol = getGlobalESSymbolConstructorSymbol(/*reportErrors*/ true); + if (!globalESSymbol) { + // Already errored when we tried to look up the symbol + return false; + } + if (leftHandSideSymbol !== globalESSymbol) { + if (reportError) { + error(leftHandSide, ts.Diagnostics.Symbol_reference_does_not_refer_to_the_global_Symbol_constructor_object); + } + return false; + } + return true; + } + function callLikeExpressionMayHaveTypeArguments(node) { + return ts.isCallOrNewExpression(node) || ts.isTaggedTemplateExpression(node) || ts.isJsxOpeningLikeElement(node); + } + function resolveUntypedCall(node) { + if (callLikeExpressionMayHaveTypeArguments(node)) { + // Check type arguments even though we will give an error that untyped calls may not accept type arguments. + // This gets us diagnostics for the type arguments and marks them as referenced. + ts.forEach(node.typeArguments, checkSourceElement); + } + if (node.kind === 198 /* TaggedTemplateExpression */) { + checkExpression(node.template); + } + else if (ts.isJsxOpeningLikeElement(node)) { + checkExpression(node.attributes); + } + else if (node.kind !== 157 /* Decorator */) { + ts.forEach(node.arguments, function (argument) { + checkExpression(argument); + }); + } + return anySignature; + } + function resolveErrorCall(node) { + resolveUntypedCall(node); + return unknownSignature; + } + // Re-order candidate signatures into the result array. Assumes the result array to be empty. + // The candidate list orders groups in reverse, but within a group signatures are kept in declaration order + // A nit here is that we reorder only signatures that belong to the same symbol, + // so order how inherited signatures are processed is still preserved. + // interface A { (x: string): void } + // interface B extends A { (x: 'foo'): string } + // const b: B; + // b('foo') // <- here overloads should be processed as [(x:'foo'): string, (x: string): void] + function reorderCandidates(signatures, result, callChainFlags) { + var lastParent; + var lastSymbol; + var cutoffIndex = 0; + var index; + var specializedIndex = -1; + var spliceIndex; + ts.Debug.assert(!result.length); + for (var _i = 0, signatures_7 = signatures; _i < signatures_7.length; _i++) { + var signature = signatures_7[_i]; + var symbol = signature.declaration && getSymbolOfNode(signature.declaration); + var parent = signature.declaration && signature.declaration.parent; + if (!lastSymbol || symbol === lastSymbol) { + if (lastParent && parent === lastParent) { + index = index + 1; + } + else { + lastParent = parent; + index = cutoffIndex; + } + } + else { + // current declaration belongs to a different symbol + // set cutoffIndex so re-orderings in the future won't change result set from 0 to cutoffIndex + index = cutoffIndex = result.length; + lastParent = parent; + } + lastSymbol = symbol; + // specialized signatures always need to be placed before non-specialized signatures regardless + // of the cutoff position; see GH#1133 + if (signatureHasLiteralTypes(signature)) { + specializedIndex++; + spliceIndex = specializedIndex; + // The cutoff index always needs to be greater than or equal to the specialized signature index + // in order to prevent non-specialized signatures from being added before a specialized + // signature. + cutoffIndex++; + } + else { + spliceIndex = index; + } + result.splice(spliceIndex, 0, callChainFlags ? getOptionalCallSignature(signature, callChainFlags) : signature); + } + } + function isSpreadArgument(arg) { + return !!arg && (arg.kind === 213 /* SpreadElement */ || arg.kind === 220 /* SyntheticExpression */ && arg.isSpread); + } + function getSpreadArgumentIndex(args) { + return ts.findIndex(args, isSpreadArgument); + } + function acceptsVoid(t) { + return !!(t.flags & 16384 /* Void */); + } + function hasCorrectArity(node, args, signature, signatureHelpTrailingComma) { + if (signatureHelpTrailingComma === void 0) { signatureHelpTrailingComma = false; } + var argCount; + var callIsIncomplete = false; // In incomplete call we want to be lenient when we have too few arguments + var effectiveParameterCount = getParameterCount(signature); + var effectiveMinimumArguments = getMinArgumentCount(signature); + if (node.kind === 198 /* TaggedTemplateExpression */) { + argCount = args.length; + if (node.template.kind === 211 /* TemplateExpression */) { + // If a tagged template expression lacks a tail literal, the call is incomplete. + // Specifically, a template only can end in a TemplateTail or a Missing literal. + var lastSpan = ts.last(node.template.templateSpans); // we should always have at least one span. + callIsIncomplete = ts.nodeIsMissing(lastSpan.literal) || !!lastSpan.literal.isUnterminated; + } + else { + // If the template didn't end in a backtick, or its beginning occurred right prior to EOF, + // then this might actually turn out to be a TemplateHead in the future; + // so we consider the call to be incomplete. + var templateLiteral = node.template; + ts.Debug.assert(templateLiteral.kind === 14 /* NoSubstitutionTemplateLiteral */); + callIsIncomplete = !!templateLiteral.isUnterminated; + } + } + else if (node.kind === 157 /* Decorator */) { + argCount = getDecoratorArgumentCount(node, signature); + } + else if (ts.isJsxOpeningLikeElement(node)) { + callIsIncomplete = node.attributes.end === node.end; + if (callIsIncomplete) { + return true; + } + argCount = effectiveMinimumArguments === 0 ? args.length : 1; + effectiveParameterCount = args.length === 0 ? effectiveParameterCount : 1; // class may have argumentless ctor functions - still resolve ctor and compare vs props member type + effectiveMinimumArguments = Math.min(effectiveMinimumArguments, 1); // sfc may specify context argument - handled by framework and not typechecked + } + else { + if (!node.arguments) { + // This only happens when we have something of the form: 'new C' + ts.Debug.assert(node.kind === 197 /* NewExpression */); + return getMinArgumentCount(signature) === 0; + } + argCount = signatureHelpTrailingComma ? args.length + 1 : args.length; + // If we are missing the close parenthesis, the call is incomplete. + callIsIncomplete = node.arguments.end === node.end; + // If a spread argument is present, check that it corresponds to a rest parameter or at least that it's in the valid range. + var spreadArgIndex = getSpreadArgumentIndex(args); + if (spreadArgIndex >= 0) { + return spreadArgIndex >= getMinArgumentCount(signature) && (hasEffectiveRestParameter(signature) || spreadArgIndex < getParameterCount(signature)); + } + } + // Too many arguments implies incorrect arity. + if (!hasEffectiveRestParameter(signature) && argCount > effectiveParameterCount) { + return false; + } + // If the call is incomplete, we should skip the lower bound check. + // JSX signatures can have extra parameters provided by the library which we don't check + if (callIsIncomplete || argCount >= effectiveMinimumArguments) { + return true; + } + for (var i = argCount; i < effectiveMinimumArguments; i++) { + var type = getTypeAtPosition(signature, i); + if (filterType(type, acceptsVoid).flags & 131072 /* Never */) { + return false; + } + } + return true; + } + function hasCorrectTypeArgumentArity(signature, typeArguments) { + // If the user supplied type arguments, but the number of type arguments does not match + // the declared number of type parameters, the call has an incorrect arity. + var numTypeParameters = ts.length(signature.typeParameters); + var minTypeArgumentCount = getMinTypeArgumentCount(signature.typeParameters); + return !ts.some(typeArguments) || + (typeArguments.length >= minTypeArgumentCount && typeArguments.length <= numTypeParameters); + } + // If type has a single call signature and no other members, return that signature. Otherwise, return undefined. + function getSingleCallSignature(type) { + return getSingleSignature(type, 0 /* Call */, /*allowMembers*/ false); + } + function getSingleCallOrConstructSignature(type) { + return getSingleSignature(type, 0 /* Call */, /*allowMembers*/ false) || + getSingleSignature(type, 1 /* Construct */, /*allowMembers*/ false); + } + function getSingleSignature(type, kind, allowMembers) { + if (type.flags & 524288 /* Object */) { + var resolved = resolveStructuredTypeMembers(type); + if (allowMembers || resolved.properties.length === 0 && !resolved.stringIndexInfo && !resolved.numberIndexInfo) { + if (kind === 0 /* Call */ && resolved.callSignatures.length === 1 && resolved.constructSignatures.length === 0) { + return resolved.callSignatures[0]; + } + if (kind === 1 /* Construct */ && resolved.constructSignatures.length === 1 && resolved.callSignatures.length === 0) { + return resolved.constructSignatures[0]; + } + } + } + return undefined; + } + // Instantiate a generic signature in the context of a non-generic signature (section 3.8.5 in TypeScript spec) + function instantiateSignatureInContextOf(signature, contextualSignature, inferenceContext, compareTypes) { + var context = createInferenceContext(signature.typeParameters, signature, 0 /* None */, compareTypes); + // We clone the inferenceContext to avoid fixing. For example, when the source signature is (x: T) => T[] and + // the contextual signature is (...args: A) => B, we want to infer the element type of A's constraint (say 'any') + // for T but leave it possible to later infer '[any]' back to A. + var restType = getEffectiveRestType(contextualSignature); + var mapper = inferenceContext && (restType && restType.flags & 262144 /* TypeParameter */ ? inferenceContext.nonFixingMapper : inferenceContext.mapper); + var sourceSignature = mapper ? instantiateSignature(contextualSignature, mapper) : contextualSignature; + applyToParameterTypes(sourceSignature, signature, function (source, target) { + // Type parameters from outer context referenced by source type are fixed by instantiation of the source type + inferTypes(context.inferences, source, target); + }); + if (!inferenceContext) { + applyToReturnTypes(contextualSignature, signature, function (source, target) { + inferTypes(context.inferences, source, target, 32 /* ReturnType */); + }); + } + return getSignatureInstantiation(signature, getInferredTypes(context), ts.isInJSFile(contextualSignature.declaration)); + } + function inferJsxTypeArguments(node, signature, checkMode, context) { + var paramType = getEffectiveFirstArgumentForJsxSignature(signature, node); + var checkAttrType = checkExpressionWithContextualType(node.attributes, paramType, context, checkMode); + inferTypes(context.inferences, checkAttrType, paramType); + return getInferredTypes(context); + } + function inferTypeArguments(node, signature, args, checkMode, context) { + if (ts.isJsxOpeningLikeElement(node)) { + return inferJsxTypeArguments(node, signature, checkMode, context); + } + // If a contextual type is available, infer from that type to the return type of the call expression. For + // example, given a 'function wrap(cb: (x: T) => U): (x: T) => U' and a call expression + // 'let f: (x: string) => number = wrap(s => s.length)', we infer from the declared type of 'f' to the + // return type of 'wrap'. + if (node.kind !== 157 /* Decorator */) { + var contextualType = getContextualType(node); + if (contextualType) { + // We clone the inference context to avoid disturbing a resolution in progress for an + // outer call expression. Effectively we just want a snapshot of whatever has been + // inferred for any outer call expression so far. + var outerContext = getInferenceContext(node); + var outerMapper = getMapperFromContext(cloneInferenceContext(outerContext, 1 /* NoDefault */)); + var instantiatedType = instantiateType(contextualType, outerMapper); + // If the contextual type is a generic function type with a single call signature, we + // instantiate the type with its own type parameters and type arguments. This ensures that + // the type parameters are not erased to type any during type inference such that they can + // be inferred as actual types from the contextual type. For example: + // declare function arrayMap(f: (x: T) => U): (a: T[]) => U[]; + // const boxElements: (a: A[]) => { value: A }[] = arrayMap(value => ({ value })); + // Above, the type of the 'value' parameter is inferred to be 'A'. + var contextualSignature = getSingleCallSignature(instantiatedType); + var inferenceSourceType = contextualSignature && contextualSignature.typeParameters ? + getOrCreateTypeFromSignature(getSignatureInstantiationWithoutFillingInTypeArguments(contextualSignature, contextualSignature.typeParameters)) : + instantiatedType; + var inferenceTargetType = getReturnTypeOfSignature(signature); + // Inferences made from return types have lower priority than all other inferences. + inferTypes(context.inferences, inferenceSourceType, inferenceTargetType, 32 /* ReturnType */); + // Create a type mapper for instantiating generic contextual types using the inferences made + // from the return type. We need a separate inference pass here because (a) instantiation of + // the source type uses the outer context's return mapper (which excludes inferences made from + // outer arguments), and (b) we don't want any further inferences going into this context. + var returnContext = createInferenceContext(signature.typeParameters, signature, context.flags); + var returnSourceType = instantiateType(contextualType, outerContext && outerContext.returnMapper); + inferTypes(returnContext.inferences, returnSourceType, inferenceTargetType); + context.returnMapper = ts.some(returnContext.inferences, hasInferenceCandidates) ? getMapperFromContext(cloneInferredPartOfContext(returnContext)) : undefined; + } + } + var thisType = getThisTypeOfSignature(signature); + if (thisType) { + var thisArgumentNode = getThisArgumentOfCall(node); + var thisArgumentType = thisArgumentNode ? checkExpression(thisArgumentNode) : voidType; + inferTypes(context.inferences, thisArgumentType, thisType); + } + var restType = getNonArrayRestType(signature); + var argCount = restType ? Math.min(getParameterCount(signature) - 1, args.length) : args.length; + for (var i = 0; i < argCount; i++) { + var arg = args[i]; + if (arg.kind !== 215 /* OmittedExpression */) { + var paramType = getTypeAtPosition(signature, i); + var argType = checkExpressionWithContextualType(arg, paramType, context, checkMode); + inferTypes(context.inferences, argType, paramType); + } + } + if (restType) { + var spreadType = getSpreadArgumentType(args, argCount, args.length, restType, context); + inferTypes(context.inferences, spreadType, restType); + } + return getInferredTypes(context); + } + function getArrayifiedType(type) { + return type.flags & 1048576 /* Union */ ? mapType(type, getArrayifiedType) : + type.flags & (1 /* Any */ | 63176704 /* Instantiable */) || isMutableArrayOrTuple(type) ? type : + isTupleType(type) ? createTupleType(getTypeArguments(type), type.target.minLength, type.target.hasRestElement, /*readonly*/ false, type.target.associatedNames) : + createArrayType(getIndexedAccessType(type, numberType)); + } + function getSpreadArgumentType(args, index, argCount, restType, context) { + if (index >= argCount - 1) { + var arg = args[argCount - 1]; + if (isSpreadArgument(arg)) { + // We are inferring from a spread expression in the last argument position, i.e. both the parameter + // and the argument are ...x forms. + return arg.kind === 220 /* SyntheticExpression */ ? + createArrayType(arg.type) : + getArrayifiedType(checkExpressionWithContextualType(arg.expression, restType, context, 0 /* Normal */)); + } + } + var types = []; + var spreadIndex = -1; + for (var i = index; i < argCount; i++) { + var contextualType = getIndexedAccessType(restType, getLiteralType(i - index)); + var argType = checkExpressionWithContextualType(args[i], contextualType, context, 0 /* Normal */); + if (spreadIndex < 0 && isSpreadArgument(args[i])) { + spreadIndex = i - index; + } + var hasPrimitiveContextualType = maybeTypeOfKind(contextualType, 131068 /* Primitive */ | 4194304 /* Index */); + types.push(hasPrimitiveContextualType ? getRegularTypeOfLiteralType(argType) : getWidenedLiteralType(argType)); + } + return spreadIndex < 0 ? + createTupleType(types) : + createTupleType(ts.append(types.slice(0, spreadIndex), getUnionType(types.slice(spreadIndex))), spreadIndex, /*hasRestElement*/ true); + } + function checkTypeArguments(signature, typeArgumentNodes, reportErrors, headMessage) { + var isJavascript = ts.isInJSFile(signature.declaration); + var typeParameters = signature.typeParameters; + var typeArgumentTypes = fillMissingTypeArguments(ts.map(typeArgumentNodes, getTypeFromTypeNode), typeParameters, getMinTypeArgumentCount(typeParameters), isJavascript); + var mapper; + for (var i = 0; i < typeArgumentNodes.length; i++) { + ts.Debug.assert(typeParameters[i] !== undefined, "Should not call checkTypeArguments with too many type arguments"); + var constraint = getConstraintOfTypeParameter(typeParameters[i]); + if (constraint) { + var errorInfo = reportErrors && headMessage ? (function () { return ts.chainDiagnosticMessages(/*details*/ undefined, ts.Diagnostics.Type_0_does_not_satisfy_the_constraint_1); }) : undefined; + var typeArgumentHeadMessage = headMessage || ts.Diagnostics.Type_0_does_not_satisfy_the_constraint_1; + if (!mapper) { + mapper = createTypeMapper(typeParameters, typeArgumentTypes); + } + var typeArgument = typeArgumentTypes[i]; + if (!checkTypeAssignableTo(typeArgument, getTypeWithThisArgument(instantiateType(constraint, mapper), typeArgument), reportErrors ? typeArgumentNodes[i] : undefined, typeArgumentHeadMessage, errorInfo)) { + return undefined; + } + } + } + return typeArgumentTypes; + } + function getJsxReferenceKind(node) { + if (isJsxIntrinsicIdentifier(node.tagName)) { + return 2 /* Mixed */; + } + var tagType = getApparentType(checkExpression(node.tagName)); + if (ts.length(getSignaturesOfType(tagType, 1 /* Construct */))) { + return 0 /* Component */; + } + if (ts.length(getSignaturesOfType(tagType, 0 /* Call */))) { + return 1 /* Function */; + } + return 2 /* Mixed */; + } + /** + * Check if the given signature can possibly be a signature called by the JSX opening-like element. + * @param node a JSX opening-like element we are trying to figure its call signature + * @param signature a candidate signature we are trying whether it is a call signature + * @param relation a relationship to check parameter and argument type + */ + function checkApplicableSignatureForJsxOpeningLikeElement(node, signature, relation, checkMode, reportErrors, containingMessageChain, errorOutputContainer) { + // Stateless function components can have maximum of three arguments: "props", "context", and "updater". + // However "context" and "updater" are implicit and can't be specify by users. Only the first parameter, props, + // can be specified by users through attributes property. + var paramType = getEffectiveFirstArgumentForJsxSignature(signature, node); + var attributesType = checkExpressionWithContextualType(node.attributes, paramType, /*inferenceContext*/ undefined, checkMode); + return checkTagNameDoesNotExpectTooManyArguments() && checkTypeRelatedToAndOptionallyElaborate(attributesType, paramType, relation, reportErrors ? node.tagName : undefined, node.attributes, + /*headMessage*/ undefined, containingMessageChain, errorOutputContainer); + function checkTagNameDoesNotExpectTooManyArguments() { + var _a; + var tagType = ts.isJsxOpeningElement(node) || ts.isJsxSelfClosingElement(node) && !isJsxIntrinsicIdentifier(node.tagName) ? checkExpression(node.tagName) : undefined; + if (!tagType) { + return true; + } + var tagCallSignatures = getSignaturesOfType(tagType, 0 /* Call */); + if (!ts.length(tagCallSignatures)) { + return true; + } + var factory = getJsxFactoryEntity(node); + if (!factory) { + return true; + } + var factorySymbol = resolveEntityName(factory, 111551 /* Value */, /*ignoreErrors*/ true, /*dontResolveAlias*/ false, node); + if (!factorySymbol) { + return true; + } + var factoryType = getTypeOfSymbol(factorySymbol); + var callSignatures = getSignaturesOfType(factoryType, 0 /* Call */); + if (!ts.length(callSignatures)) { + return true; + } + var hasFirstParamSignatures = false; + var maxParamCount = 0; + // Check that _some_ first parameter expects a FC-like thing, and that some overload of the SFC expects an acceptable number of arguments + for (var _i = 0, callSignatures_1 = callSignatures; _i < callSignatures_1.length; _i++) { + var sig = callSignatures_1[_i]; + var firstparam = getTypeAtPosition(sig, 0); + var signaturesOfParam = getSignaturesOfType(firstparam, 0 /* Call */); + if (!ts.length(signaturesOfParam)) + continue; + for (var _b = 0, signaturesOfParam_1 = signaturesOfParam; _b < signaturesOfParam_1.length; _b++) { + var paramSig = signaturesOfParam_1[_b]; + hasFirstParamSignatures = true; + if (hasEffectiveRestParameter(paramSig)) { + return true; // some signature has a rest param, so function components can have an arbitrary number of arguments + } + var paramCount = getParameterCount(paramSig); + if (paramCount > maxParamCount) { + maxParamCount = paramCount; + } + } + } + if (!hasFirstParamSignatures) { + // Not a single signature had a first parameter which expected a signature - for back compat, and + // to guard against generic factories which won't have signatures directly, do not error + return true; + } + var absoluteMinArgCount = Infinity; + for (var _c = 0, tagCallSignatures_1 = tagCallSignatures; _c < tagCallSignatures_1.length; _c++) { + var tagSig = tagCallSignatures_1[_c]; + var tagRequiredArgCount = getMinArgumentCount(tagSig); + if (tagRequiredArgCount < absoluteMinArgCount) { + absoluteMinArgCount = tagRequiredArgCount; + } + } + if (absoluteMinArgCount <= maxParamCount) { + return true; // some signature accepts the number of arguments the function component provides + } + if (reportErrors) { + var diag = ts.createDiagnosticForNode(node.tagName, ts.Diagnostics.Tag_0_expects_at_least_1_arguments_but_the_JSX_factory_2_provides_at_most_3, ts.entityNameToString(node.tagName), absoluteMinArgCount, ts.entityNameToString(factory), maxParamCount); + var tagNameDeclaration = (_a = getSymbolAtLocation(node.tagName)) === null || _a === void 0 ? void 0 : _a.valueDeclaration; + if (tagNameDeclaration) { + ts.addRelatedInfo(diag, ts.createDiagnosticForNode(tagNameDeclaration, ts.Diagnostics._0_is_declared_here, ts.entityNameToString(node.tagName))); + } + if (errorOutputContainer && errorOutputContainer.skipLogging) { + (errorOutputContainer.errors || (errorOutputContainer.errors = [])).push(diag); + } + if (!errorOutputContainer.skipLogging) { + diagnostics.add(diag); + } + } + return false; + } + } + function getSignatureApplicabilityError(node, args, signature, relation, checkMode, reportErrors, containingMessageChain) { + var errorOutputContainer = { errors: undefined, skipLogging: true }; + if (ts.isJsxOpeningLikeElement(node)) { + if (!checkApplicableSignatureForJsxOpeningLikeElement(node, signature, relation, checkMode, reportErrors, containingMessageChain, errorOutputContainer)) { + ts.Debug.assert(!reportErrors || !!errorOutputContainer.errors, "jsx should have errors when reporting errors"); + return errorOutputContainer.errors || ts.emptyArray; + } + return undefined; + } + var thisType = getThisTypeOfSignature(signature); + if (thisType && thisType !== voidType && node.kind !== 197 /* NewExpression */) { + // If the called expression is not of the form `x.f` or `x["f"]`, then sourceType = voidType + // If the signature's 'this' type is voidType, then the check is skipped -- anything is compatible. + // If the expression is a new expression, then the check is skipped. + var thisArgumentNode = getThisArgumentOfCall(node); + var thisArgumentType = void 0; + if (thisArgumentNode) { + thisArgumentType = checkExpression(thisArgumentNode); + if (ts.isOptionalChainRoot(thisArgumentNode.parent)) { + thisArgumentType = getNonNullableType(thisArgumentType); + } + else if (ts.isOptionalChain(thisArgumentNode.parent)) { + thisArgumentType = removeOptionalTypeMarker(thisArgumentType); + } + } + else { + thisArgumentType = voidType; + } + var errorNode = reportErrors ? (thisArgumentNode || node) : undefined; + var headMessage_1 = ts.Diagnostics.The_this_context_of_type_0_is_not_assignable_to_method_s_this_of_type_1; + if (!checkTypeRelatedTo(thisArgumentType, thisType, relation, errorNode, headMessage_1, containingMessageChain, errorOutputContainer)) { + ts.Debug.assert(!reportErrors || !!errorOutputContainer.errors, "this parameter should have errors when reporting errors"); + return errorOutputContainer.errors || ts.emptyArray; + } + } + var headMessage = ts.Diagnostics.Argument_of_type_0_is_not_assignable_to_parameter_of_type_1; + var restType = getNonArrayRestType(signature); + var argCount = restType ? Math.min(getParameterCount(signature) - 1, args.length) : args.length; + for (var i = 0; i < argCount; i++) { + var arg = args[i]; + if (arg.kind !== 215 /* OmittedExpression */) { + var paramType = getTypeAtPosition(signature, i); + var argType = checkExpressionWithContextualType(arg, paramType, /*inferenceContext*/ undefined, checkMode); + // If one or more arguments are still excluded (as indicated by CheckMode.SkipContextSensitive), + // we obtain the regular type of any object literal arguments because we may not have inferred complete + // parameter types yet and therefore excess property checks may yield false positives (see #17041). + var checkArgType = checkMode & 4 /* SkipContextSensitive */ ? getRegularTypeOfObjectLiteral(argType) : argType; + if (!checkTypeRelatedToAndOptionallyElaborate(checkArgType, paramType, relation, reportErrors ? arg : undefined, arg, headMessage, containingMessageChain, errorOutputContainer)) { + ts.Debug.assert(!reportErrors || !!errorOutputContainer.errors, "parameter should have errors when reporting errors"); + maybeAddMissingAwaitInfo(arg, checkArgType, paramType); + return errorOutputContainer.errors || ts.emptyArray; + } + } + } + if (restType) { + var spreadType = getSpreadArgumentType(args, argCount, args.length, restType, /*context*/ undefined); + var errorNode = reportErrors ? argCount < args.length ? args[argCount] : node : undefined; + if (!checkTypeRelatedTo(spreadType, restType, relation, errorNode, headMessage, /*containingMessageChain*/ undefined, errorOutputContainer)) { + ts.Debug.assert(!reportErrors || !!errorOutputContainer.errors, "rest parameter should have errors when reporting errors"); + maybeAddMissingAwaitInfo(errorNode, spreadType, restType); + return errorOutputContainer.errors || ts.emptyArray; + } + } + return undefined; + function maybeAddMissingAwaitInfo(errorNode, source, target) { + if (errorNode && reportErrors && errorOutputContainer.errors && errorOutputContainer.errors.length) { + // Bail if target is Promise-like---something else is wrong + if (getAwaitedTypeOfPromise(target)) { + return; + } + var awaitedTypeOfSource = getAwaitedTypeOfPromise(source); + if (awaitedTypeOfSource && isTypeRelatedTo(awaitedTypeOfSource, target, relation)) { + ts.addRelatedInfo(errorOutputContainer.errors[0], ts.createDiagnosticForNode(errorNode, ts.Diagnostics.Did_you_forget_to_use_await)); + } + } + } + } + /** + * Returns the this argument in calls like x.f(...) and x[f](...). Undefined otherwise. + */ + function getThisArgumentOfCall(node) { + if (node.kind === 196 /* CallExpression */) { + var callee = ts.skipOuterExpressions(node.expression); + if (ts.isAccessExpression(callee)) { + return callee.expression; + } + } + } + function createSyntheticExpression(parent, type, isSpread) { + var result = ts.createNode(220 /* SyntheticExpression */, parent.pos, parent.end); + result.parent = parent; + result.type = type; + result.isSpread = isSpread || false; + return result; + } + /** + * Returns the effective arguments for an expression that works like a function invocation. + */ + function getEffectiveCallArguments(node) { + if (node.kind === 198 /* TaggedTemplateExpression */) { + var template = node.template; + var args_3 = [createSyntheticExpression(template, getGlobalTemplateStringsArrayType())]; + if (template.kind === 211 /* TemplateExpression */) { + ts.forEach(template.templateSpans, function (span) { + args_3.push(span.expression); + }); + } + return args_3; + } + if (node.kind === 157 /* Decorator */) { + return getEffectiveDecoratorArguments(node); + } + if (ts.isJsxOpeningLikeElement(node)) { + return node.attributes.properties.length > 0 || (ts.isJsxOpeningElement(node) && node.parent.children.length > 0) ? [node.attributes] : ts.emptyArray; + } + var args = node.arguments || ts.emptyArray; + var length = args.length; + if (length && isSpreadArgument(args[length - 1]) && getSpreadArgumentIndex(args) === length - 1) { + // We have a spread argument in the last position and no other spread arguments. If the type + // of the argument is a tuple type, spread the tuple elements into the argument list. We can + // call checkExpressionCached because spread expressions never have a contextual type. + var spreadArgument_1 = args[length - 1]; + var type = flowLoopCount ? checkExpression(spreadArgument_1.expression) : checkExpressionCached(spreadArgument_1.expression); + if (isTupleType(type)) { + var typeArguments = getTypeArguments(type); + var restIndex_2 = type.target.hasRestElement ? typeArguments.length - 1 : -1; + var syntheticArgs = ts.map(typeArguments, function (t, i) { return createSyntheticExpression(spreadArgument_1, t, /*isSpread*/ i === restIndex_2); }); + return ts.concatenate(args.slice(0, length - 1), syntheticArgs); + } + } + return args; + } + /** + * Returns the synthetic argument list for a decorator invocation. + */ + function getEffectiveDecoratorArguments(node) { + var parent = node.parent; + var expr = node.expression; + switch (parent.kind) { + case 245 /* ClassDeclaration */: + case 214 /* ClassExpression */: + // For a class decorator, the `target` is the type of the class (e.g. the + // "static" or "constructor" side of the class). + return [ + createSyntheticExpression(expr, getTypeOfSymbol(getSymbolOfNode(parent))) + ]; + case 156 /* Parameter */: + // A parameter declaration decorator will have three arguments (see + // `ParameterDecorator` in core.d.ts). + var func = parent.parent; + return [ + createSyntheticExpression(expr, parent.parent.kind === 162 /* Constructor */ ? getTypeOfSymbol(getSymbolOfNode(func)) : errorType), + createSyntheticExpression(expr, anyType), + createSyntheticExpression(expr, numberType) + ]; + case 159 /* PropertyDeclaration */: + case 161 /* MethodDeclaration */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + // A method or accessor declaration decorator will have two or three arguments (see + // `PropertyDecorator` and `MethodDecorator` in core.d.ts). If we are emitting decorators + // for ES3, we will only pass two arguments. + var hasPropDesc = parent.kind !== 159 /* PropertyDeclaration */ && languageVersion !== 0 /* ES3 */; + return [ + createSyntheticExpression(expr, getParentTypeOfClassElement(parent)), + createSyntheticExpression(expr, getClassElementPropertyKeyType(parent)), + createSyntheticExpression(expr, hasPropDesc ? createTypedPropertyDescriptorType(getTypeOfNode(parent)) : anyType) + ]; + } + return ts.Debug.fail(); + } + /** + * Returns the argument count for a decorator node that works like a function invocation. + */ + function getDecoratorArgumentCount(node, signature) { + switch (node.parent.kind) { + case 245 /* ClassDeclaration */: + case 214 /* ClassExpression */: + return 1; + case 159 /* PropertyDeclaration */: + return 2; + case 161 /* MethodDeclaration */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + // For ES3 or decorators with only two parameters we supply only two arguments + return languageVersion === 0 /* ES3 */ || signature.parameters.length <= 2 ? 2 : 3; + case 156 /* Parameter */: + return 3; + default: + return ts.Debug.fail(); + } + } + function getDiagnosticSpanForCallNode(node, doNotIncludeArguments) { + var start; + var length; + var sourceFile = ts.getSourceFileOfNode(node); + if (ts.isPropertyAccessExpression(node.expression)) { + var nameSpan = ts.getErrorSpanForNode(sourceFile, node.expression.name); + start = nameSpan.start; + length = doNotIncludeArguments ? nameSpan.length : node.end - start; + } + else { + var expressionSpan = ts.getErrorSpanForNode(sourceFile, node.expression); + start = expressionSpan.start; + length = doNotIncludeArguments ? expressionSpan.length : node.end - start; + } + return { start: start, length: length, sourceFile: sourceFile }; + } + function getDiagnosticForCallNode(node, message, arg0, arg1, arg2, arg3) { + if (ts.isCallExpression(node)) { + var _a = getDiagnosticSpanForCallNode(node), sourceFile = _a.sourceFile, start = _a.start, length_5 = _a.length; + return ts.createFileDiagnostic(sourceFile, start, length_5, message, arg0, arg1, arg2, arg3); + } + else { + return ts.createDiagnosticForNode(node, message, arg0, arg1, arg2, arg3); + } + } + function getArgumentArityError(node, signatures, args) { + var min = Number.POSITIVE_INFINITY; + var max = Number.NEGATIVE_INFINITY; + var belowArgCount = Number.NEGATIVE_INFINITY; + var aboveArgCount = Number.POSITIVE_INFINITY; + var argCount = args.length; + var closestSignature; + for (var _i = 0, signatures_8 = signatures; _i < signatures_8.length; _i++) { + var sig = signatures_8[_i]; + var minCount = getMinArgumentCount(sig); + var maxCount = getParameterCount(sig); + if (minCount < argCount && minCount > belowArgCount) + belowArgCount = minCount; + if (argCount < maxCount && maxCount < aboveArgCount) + aboveArgCount = maxCount; + if (minCount < min) { + min = minCount; + closestSignature = sig; + } + max = Math.max(max, maxCount); + } + var hasRestParameter = ts.some(signatures, hasEffectiveRestParameter); + var paramRange = hasRestParameter ? min : + min < max ? min + "-" + max : + min; + var hasSpreadArgument = getSpreadArgumentIndex(args) > -1; + if (argCount <= max && hasSpreadArgument) { + argCount--; + } + var spanArray; + var related; + var error = hasRestParameter || hasSpreadArgument ? hasRestParameter && hasSpreadArgument ? ts.Diagnostics.Expected_at_least_0_arguments_but_got_1_or_more : + hasRestParameter ? ts.Diagnostics.Expected_at_least_0_arguments_but_got_1 : + ts.Diagnostics.Expected_0_arguments_but_got_1_or_more : ts.Diagnostics.Expected_0_arguments_but_got_1; + if (closestSignature && getMinArgumentCount(closestSignature) > argCount && closestSignature.declaration) { + var paramDecl = closestSignature.declaration.parameters[closestSignature.thisParameter ? argCount + 1 : argCount]; + if (paramDecl) { + related = ts.createDiagnosticForNode(paramDecl, ts.isBindingPattern(paramDecl.name) ? ts.Diagnostics.An_argument_matching_this_binding_pattern_was_not_provided : ts.Diagnostics.An_argument_for_0_was_not_provided, !paramDecl.name ? argCount : !ts.isBindingPattern(paramDecl.name) ? ts.idText(ts.getFirstIdentifier(paramDecl.name)) : undefined); + } + } + if (min < argCount && argCount < max) { + return getDiagnosticForCallNode(node, ts.Diagnostics.No_overload_expects_0_arguments_but_overloads_do_exist_that_expect_either_1_or_2_arguments, argCount, belowArgCount, aboveArgCount); + } + if (!hasSpreadArgument && argCount < min) { + var diagnostic_1 = getDiagnosticForCallNode(node, error, paramRange, argCount); + return related ? ts.addRelatedInfo(diagnostic_1, related) : diagnostic_1; + } + if (hasRestParameter || hasSpreadArgument) { + spanArray = ts.createNodeArray(args); + if (hasSpreadArgument && argCount) { + var nextArg = ts.elementAt(args, getSpreadArgumentIndex(args) + 1) || undefined; + spanArray = ts.createNodeArray(args.slice(max > argCount && nextArg ? args.indexOf(nextArg) : Math.min(max, args.length - 1))); + } + } + else { + spanArray = ts.createNodeArray(args.slice(max)); + } + spanArray.pos = ts.first(spanArray).pos; + spanArray.end = ts.last(spanArray).end; + if (spanArray.end === spanArray.pos) { + spanArray.end++; + } + var diagnostic = ts.createDiagnosticForNodeArray(ts.getSourceFileOfNode(node), spanArray, error, paramRange, argCount); + return related ? ts.addRelatedInfo(diagnostic, related) : diagnostic; + } + function getTypeArgumentArityError(node, signatures, typeArguments) { + var argCount = typeArguments.length; + // No overloads exist + if (signatures.length === 1) { + var sig = signatures[0]; + var min_1 = getMinTypeArgumentCount(sig.typeParameters); + var max = ts.length(sig.typeParameters); + return ts.createDiagnosticForNodeArray(ts.getSourceFileOfNode(node), typeArguments, ts.Diagnostics.Expected_0_type_arguments_but_got_1, min_1 < max ? min_1 + "-" + max : min_1, argCount); + } + // Overloads exist + var belowArgCount = -Infinity; + var aboveArgCount = Infinity; + for (var _i = 0, signatures_9 = signatures; _i < signatures_9.length; _i++) { + var sig = signatures_9[_i]; + var min_2 = getMinTypeArgumentCount(sig.typeParameters); + var max = ts.length(sig.typeParameters); + if (min_2 > argCount) { + aboveArgCount = Math.min(aboveArgCount, min_2); + } + else if (max < argCount) { + belowArgCount = Math.max(belowArgCount, max); + } + } + if (belowArgCount !== -Infinity && aboveArgCount !== Infinity) { + return ts.createDiagnosticForNodeArray(ts.getSourceFileOfNode(node), typeArguments, ts.Diagnostics.No_overload_expects_0_type_arguments_but_overloads_do_exist_that_expect_either_1_or_2_type_arguments, argCount, belowArgCount, aboveArgCount); + } + return ts.createDiagnosticForNodeArray(ts.getSourceFileOfNode(node), typeArguments, ts.Diagnostics.Expected_0_type_arguments_but_got_1, belowArgCount === -Infinity ? aboveArgCount : belowArgCount, argCount); + } + function resolveCall(node, signatures, candidatesOutArray, checkMode, callChainFlags, fallbackError) { + var isTaggedTemplate = node.kind === 198 /* TaggedTemplateExpression */; + var isDecorator = node.kind === 157 /* Decorator */; + var isJsxOpeningOrSelfClosingElement = ts.isJsxOpeningLikeElement(node); + var reportErrors = !candidatesOutArray; + var typeArguments; + if (!isDecorator) { + typeArguments = node.typeArguments; + // We already perform checking on the type arguments on the class declaration itself. + if (isTaggedTemplate || isJsxOpeningOrSelfClosingElement || node.expression.kind !== 102 /* SuperKeyword */) { + ts.forEach(typeArguments, checkSourceElement); + } + } + var candidates = candidatesOutArray || []; + // reorderCandidates fills up the candidates array directly + reorderCandidates(signatures, candidates, callChainFlags); + if (!candidates.length) { + if (reportErrors) { + diagnostics.add(getDiagnosticForCallNode(node, ts.Diagnostics.Call_target_does_not_contain_any_signatures)); + } + return resolveErrorCall(node); + } + var args = getEffectiveCallArguments(node); + // The excludeArgument array contains true for each context sensitive argument (an argument + // is context sensitive it is susceptible to a one-time permanent contextual typing). + // + // The idea is that we will perform type argument inference & assignability checking once + // without using the susceptible parameters that are functions, and once more for those + // parameters, contextually typing each as we go along. + // + // For a tagged template, then the first argument be 'undefined' if necessary because it + // represents a TemplateStringsArray. + // + // For a decorator, no arguments are susceptible to contextual typing due to the fact + // decorators are applied to a declaration by the emitter, and not to an expression. + var isSingleNonGenericCandidate = candidates.length === 1 && !candidates[0].typeParameters; + var argCheckMode = !isDecorator && !isSingleNonGenericCandidate && ts.some(args, isContextSensitive) ? 4 /* SkipContextSensitive */ : 0 /* Normal */; + // The following variables are captured and modified by calls to chooseOverload. + // If overload resolution or type argument inference fails, we want to report the + // best error possible. The best error is one which says that an argument was not + // assignable to a parameter. This implies that everything else about the overload + // was fine. So if there is any overload that is only incorrect because of an + // argument, we will report an error on that one. + // + // function foo(s: string): void; + // function foo(n: number): void; // Report argument error on this overload + // function foo(): void; + // foo(true); + // + // If none of the overloads even made it that far, there are two possibilities. + // There was a problem with type arguments for some overload, in which case + // report an error on that. Or none of the overloads even had correct arity, + // in which case give an arity error. + // + // function foo(x: T): void; // Report type argument error + // function foo(): void; + // foo(0); + // + var candidatesForArgumentError; + var candidateForArgumentArityError; + var candidateForTypeArgumentError; + var result; + // If we are in signature help, a trailing comma indicates that we intend to provide another argument, + // so we will only accept overloads with arity at least 1 higher than the current number of provided arguments. + var signatureHelpTrailingComma = !!(checkMode & 16 /* IsForSignatureHelp */) && node.kind === 196 /* CallExpression */ && node.arguments.hasTrailingComma; + // Section 4.12.1: + // if the candidate list contains one or more signatures for which the type of each argument + // expression is a subtype of each corresponding parameter type, the return type of the first + // of those signatures becomes the return type of the function call. + // Otherwise, the return type of the first signature in the candidate list becomes the return + // type of the function call. + // + // Whether the call is an error is determined by assignability of the arguments. The subtype pass + // is just important for choosing the best signature. So in the case where there is only one + // signature, the subtype pass is useless. So skipping it is an optimization. + if (candidates.length > 1) { + result = chooseOverload(candidates, subtypeRelation, signatureHelpTrailingComma); + } + if (!result) { + result = chooseOverload(candidates, assignableRelation, signatureHelpTrailingComma); + } + if (result) { + return result; + } + // No signatures were applicable. Now report errors based on the last applicable signature with + // no arguments excluded from assignability checks. + // If candidate is undefined, it means that no candidates had a suitable arity. In that case, + // skip the checkApplicableSignature check. + if (reportErrors) { + if (candidatesForArgumentError) { + if (candidatesForArgumentError.length === 1 || candidatesForArgumentError.length > 3) { + var last_2 = candidatesForArgumentError[candidatesForArgumentError.length - 1]; + var chain_1; + if (candidatesForArgumentError.length > 3) { + chain_1 = ts.chainDiagnosticMessages(chain_1, ts.Diagnostics.The_last_overload_gave_the_following_error); + chain_1 = ts.chainDiagnosticMessages(chain_1, ts.Diagnostics.No_overload_matches_this_call); + } + var diags = getSignatureApplicabilityError(node, args, last_2, assignableRelation, 0 /* Normal */, /*reportErrors*/ true, function () { return chain_1; }); + if (diags) { + for (var _i = 0, diags_1 = diags; _i < diags_1.length; _i++) { + var d = diags_1[_i]; + if (last_2.declaration && candidatesForArgumentError.length > 3) { + ts.addRelatedInfo(d, ts.createDiagnosticForNode(last_2.declaration, ts.Diagnostics.The_last_overload_is_declared_here)); + } + diagnostics.add(d); + } + } + else { + ts.Debug.fail("No error for last overload signature"); + } + } + else { + var allDiagnostics = []; + var max = 0; + var min_3 = Number.MAX_VALUE; + var minIndex = 0; + var i_1 = 0; + var _loop_17 = function (c) { + var chain_2 = function () { return ts.chainDiagnosticMessages(/*details*/ undefined, ts.Diagnostics.Overload_0_of_1_2_gave_the_following_error, i_1 + 1, candidates.length, signatureToString(c)); }; + var diags_2 = getSignatureApplicabilityError(node, args, c, assignableRelation, 0 /* Normal */, /*reportErrors*/ true, chain_2); + if (diags_2) { + if (diags_2.length <= min_3) { + min_3 = diags_2.length; + minIndex = i_1; + } + max = Math.max(max, diags_2.length); + allDiagnostics.push(diags_2); + } + else { + ts.Debug.fail("No error for 3 or fewer overload signatures"); + } + i_1++; + }; + for (var _a = 0, candidatesForArgumentError_1 = candidatesForArgumentError; _a < candidatesForArgumentError_1.length; _a++) { + var c = candidatesForArgumentError_1[_a]; + _loop_17(c); + } + var diags_3 = max > 1 ? allDiagnostics[minIndex] : ts.flatten(allDiagnostics); + ts.Debug.assert(diags_3.length > 0, "No errors reported for 3 or fewer overload signatures"); + var chain = ts.chainDiagnosticMessages(ts.map(diags_3, function (d) { return typeof d.messageText === "string" ? d : d.messageText; }), ts.Diagnostics.No_overload_matches_this_call); + var related = ts.flatMap(diags_3, function (d) { return d.relatedInformation; }); + if (ts.every(diags_3, function (d) { return d.start === diags_3[0].start && d.length === diags_3[0].length && d.file === diags_3[0].file; })) { + var _b = diags_3[0], file = _b.file, start = _b.start, length_6 = _b.length; + diagnostics.add({ file: file, start: start, length: length_6, code: chain.code, category: chain.category, messageText: chain, relatedInformation: related }); + } + else { + diagnostics.add(ts.createDiagnosticForNodeFromMessageChain(node, chain, related)); + } + } + } + else if (candidateForArgumentArityError) { + diagnostics.add(getArgumentArityError(node, [candidateForArgumentArityError], args)); + } + else if (candidateForTypeArgumentError) { + checkTypeArguments(candidateForTypeArgumentError, node.typeArguments, /*reportErrors*/ true, fallbackError); + } + else { + var signaturesWithCorrectTypeArgumentArity = ts.filter(signatures, function (s) { return hasCorrectTypeArgumentArity(s, typeArguments); }); + if (signaturesWithCorrectTypeArgumentArity.length === 0) { + diagnostics.add(getTypeArgumentArityError(node, signatures, typeArguments)); + } + else if (!isDecorator) { + diagnostics.add(getArgumentArityError(node, signaturesWithCorrectTypeArgumentArity, args)); + } + else if (fallbackError) { + diagnostics.add(getDiagnosticForCallNode(node, fallbackError)); + } + } + } + return getCandidateForOverloadFailure(node, candidates, args, !!candidatesOutArray); + function chooseOverload(candidates, relation, signatureHelpTrailingComma) { + if (signatureHelpTrailingComma === void 0) { signatureHelpTrailingComma = false; } + candidatesForArgumentError = undefined; + candidateForArgumentArityError = undefined; + candidateForTypeArgumentError = undefined; + if (isSingleNonGenericCandidate) { + var candidate = candidates[0]; + if (ts.some(typeArguments) || !hasCorrectArity(node, args, candidate, signatureHelpTrailingComma)) { + return undefined; + } + if (getSignatureApplicabilityError(node, args, candidate, relation, 0 /* Normal */, /*reportErrors*/ false, /*containingMessageChain*/ undefined)) { + candidatesForArgumentError = [candidate]; + return undefined; + } + return candidate; + } + for (var candidateIndex = 0; candidateIndex < candidates.length; candidateIndex++) { + var candidate = candidates[candidateIndex]; + if (!hasCorrectTypeArgumentArity(candidate, typeArguments) || !hasCorrectArity(node, args, candidate, signatureHelpTrailingComma)) { + continue; + } + var checkCandidate = void 0; + var inferenceContext = void 0; + if (candidate.typeParameters) { + var typeArgumentTypes = void 0; + if (ts.some(typeArguments)) { + typeArgumentTypes = checkTypeArguments(candidate, typeArguments, /*reportErrors*/ false); + if (!typeArgumentTypes) { + candidateForTypeArgumentError = candidate; + continue; + } + } + else { + inferenceContext = createInferenceContext(candidate.typeParameters, candidate, /*flags*/ ts.isInJSFile(node) ? 2 /* AnyDefault */ : 0 /* None */); + typeArgumentTypes = inferTypeArguments(node, candidate, args, argCheckMode | 8 /* SkipGenericFunctions */, inferenceContext); + argCheckMode |= inferenceContext.flags & 4 /* SkippedGenericFunction */ ? 8 /* SkipGenericFunctions */ : 0 /* Normal */; + } + checkCandidate = getSignatureInstantiation(candidate, typeArgumentTypes, ts.isInJSFile(candidate.declaration), inferenceContext && inferenceContext.inferredTypeParameters); + // If the original signature has a generic rest type, instantiation may produce a + // signature with different arity and we need to perform another arity check. + if (getNonArrayRestType(candidate) && !hasCorrectArity(node, args, checkCandidate, signatureHelpTrailingComma)) { + candidateForArgumentArityError = checkCandidate; + continue; + } + } + else { + checkCandidate = candidate; + } + if (getSignatureApplicabilityError(node, args, checkCandidate, relation, argCheckMode, /*reportErrors*/ false, /*containingMessageChain*/ undefined)) { + // Give preference to error candidates that have no rest parameters (as they are more specific) + (candidatesForArgumentError || (candidatesForArgumentError = [])).push(checkCandidate); + continue; + } + if (argCheckMode) { + // If one or more context sensitive arguments were excluded, we start including + // them now (and keeping do so for any subsequent candidates) and perform a second + // round of type inference and applicability checking for this particular candidate. + argCheckMode = 0 /* Normal */; + if (inferenceContext) { + var typeArgumentTypes = inferTypeArguments(node, candidate, args, argCheckMode, inferenceContext); + checkCandidate = getSignatureInstantiation(candidate, typeArgumentTypes, ts.isInJSFile(candidate.declaration), inferenceContext && inferenceContext.inferredTypeParameters); + // If the original signature has a generic rest type, instantiation may produce a + // signature with different arity and we need to perform another arity check. + if (getNonArrayRestType(candidate) && !hasCorrectArity(node, args, checkCandidate, signatureHelpTrailingComma)) { + candidateForArgumentArityError = checkCandidate; + continue; + } + } + if (getSignatureApplicabilityError(node, args, checkCandidate, relation, argCheckMode, /*reportErrors*/ false, /*containingMessageChain*/ undefined)) { + // Give preference to error candidates that have no rest parameters (as they are more specific) + (candidatesForArgumentError || (candidatesForArgumentError = [])).push(checkCandidate); + continue; + } + } + candidates[candidateIndex] = checkCandidate; + return checkCandidate; + } + return undefined; + } + } + // No signature was applicable. We have already reported the errors for the invalid signature. + function getCandidateForOverloadFailure(node, candidates, args, hasCandidatesOutArray) { + ts.Debug.assert(candidates.length > 0); // Else should not have called this. + checkNodeDeferred(node); + // Normally we will combine overloads. Skip this if they have type parameters since that's hard to combine. + // Don't do this if there is a `candidatesOutArray`, + // because then we want the chosen best candidate to be one of the overloads, not a combination. + return hasCandidatesOutArray || candidates.length === 1 || candidates.some(function (c) { return !!c.typeParameters; }) + ? pickLongestCandidateSignature(node, candidates, args) + : createUnionOfSignaturesForOverloadFailure(candidates); + } + function createUnionOfSignaturesForOverloadFailure(candidates) { + var thisParameters = ts.mapDefined(candidates, function (c) { return c.thisParameter; }); + var thisParameter; + if (thisParameters.length) { + thisParameter = createCombinedSymbolFromTypes(thisParameters, thisParameters.map(getTypeOfParameter)); + } + var _a = ts.minAndMax(candidates, getNumNonRestParameters), minArgumentCount = _a.min, maxNonRestParam = _a.max; + var parameters = []; + var _loop_18 = function (i) { + var symbols = ts.mapDefined(candidates, function (s) { return signatureHasRestParameter(s) ? + i < s.parameters.length - 1 ? s.parameters[i] : ts.last(s.parameters) : + i < s.parameters.length ? s.parameters[i] : undefined; }); + ts.Debug.assert(symbols.length !== 0); + parameters.push(createCombinedSymbolFromTypes(symbols, ts.mapDefined(candidates, function (candidate) { return tryGetTypeAtPosition(candidate, i); }))); + }; + for (var i = 0; i < maxNonRestParam; i++) { + _loop_18(i); + } + var restParameterSymbols = ts.mapDefined(candidates, function (c) { return signatureHasRestParameter(c) ? ts.last(c.parameters) : undefined; }); + var flags = 0 /* None */; + if (restParameterSymbols.length !== 0) { + var type = createArrayType(getUnionType(ts.mapDefined(candidates, tryGetRestTypeOfSignature), 2 /* Subtype */)); + parameters.push(createCombinedSymbolForOverloadFailure(restParameterSymbols, type)); + flags |= 1 /* HasRestParameter */; + } + if (candidates.some(signatureHasLiteralTypes)) { + flags |= 2 /* HasLiteralTypes */; + } + return createSignature(candidates[0].declaration, + /*typeParameters*/ undefined, // Before calling this we tested for `!candidates.some(c => !!c.typeParameters)`. + thisParameter, parameters, + /*resolvedReturnType*/ getIntersectionType(candidates.map(getReturnTypeOfSignature)), + /*typePredicate*/ undefined, minArgumentCount, flags); + } + function getNumNonRestParameters(signature) { + var numParams = signature.parameters.length; + return signatureHasRestParameter(signature) ? numParams - 1 : numParams; + } + function createCombinedSymbolFromTypes(sources, types) { + return createCombinedSymbolForOverloadFailure(sources, getUnionType(types, 2 /* Subtype */)); + } + function createCombinedSymbolForOverloadFailure(sources, type) { + // This function is currently only used for erroneous overloads, so it's good enough to just use the first source. + return createSymbolWithType(ts.first(sources), type); + } + function pickLongestCandidateSignature(node, candidates, args) { + // Pick the longest signature. This way we can get a contextual type for cases like: + // declare function f(a: { xa: number; xb: number; }, b: number); + // f({ | + // Also, use explicitly-supplied type arguments if they are provided, so we can get a contextual signature in cases like: + // declare function f(k: keyof T); + // f(" + var bestIndex = getLongestCandidateIndex(candidates, apparentArgumentCount === undefined ? args.length : apparentArgumentCount); + var candidate = candidates[bestIndex]; + var typeParameters = candidate.typeParameters; + if (!typeParameters) { + return candidate; + } + var typeArgumentNodes = callLikeExpressionMayHaveTypeArguments(node) ? node.typeArguments : undefined; + var instantiated = typeArgumentNodes + ? createSignatureInstantiation(candidate, getTypeArgumentsFromNodes(typeArgumentNodes, typeParameters, ts.isInJSFile(node))) + : inferSignatureInstantiationForOverloadFailure(node, typeParameters, candidate, args); + candidates[bestIndex] = instantiated; + return instantiated; + } + function getTypeArgumentsFromNodes(typeArgumentNodes, typeParameters, isJs) { + var typeArguments = typeArgumentNodes.map(getTypeOfNode); + while (typeArguments.length > typeParameters.length) { + typeArguments.pop(); + } + while (typeArguments.length < typeParameters.length) { + typeArguments.push(getConstraintOfTypeParameter(typeParameters[typeArguments.length]) || getDefaultTypeArgumentType(isJs)); + } + return typeArguments; + } + function inferSignatureInstantiationForOverloadFailure(node, typeParameters, candidate, args) { + var inferenceContext = createInferenceContext(typeParameters, candidate, /*flags*/ ts.isInJSFile(node) ? 2 /* AnyDefault */ : 0 /* None */); + var typeArgumentTypes = inferTypeArguments(node, candidate, args, 4 /* SkipContextSensitive */ | 8 /* SkipGenericFunctions */, inferenceContext); + return createSignatureInstantiation(candidate, typeArgumentTypes); + } + function getLongestCandidateIndex(candidates, argsCount) { + var maxParamsIndex = -1; + var maxParams = -1; + for (var i = 0; i < candidates.length; i++) { + var candidate = candidates[i]; + var paramCount = getParameterCount(candidate); + if (hasEffectiveRestParameter(candidate) || paramCount >= argsCount) { + return i; + } + if (paramCount > maxParams) { + maxParams = paramCount; + maxParamsIndex = i; + } + } + return maxParamsIndex; + } + function resolveCallExpression(node, candidatesOutArray, checkMode) { + if (node.expression.kind === 102 /* SuperKeyword */) { + var superType = checkSuperExpression(node.expression); + if (isTypeAny(superType)) { + for (var _i = 0, _a = node.arguments; _i < _a.length; _i++) { + var arg = _a[_i]; + checkExpression(arg); // Still visit arguments so they get marked for visibility, etc + } + return anySignature; + } + if (superType !== errorType) { + // In super call, the candidate signatures are the matching arity signatures of the base constructor function instantiated + // with the type arguments specified in the extends clause. + var baseTypeNode = ts.getEffectiveBaseTypeNode(ts.getContainingClass(node)); + if (baseTypeNode) { + var baseConstructors = getInstantiatedConstructorsForTypeArguments(superType, baseTypeNode.typeArguments, baseTypeNode); + return resolveCall(node, baseConstructors, candidatesOutArray, checkMode, 0 /* None */); + } + } + return resolveUntypedCall(node); + } + var callChainFlags; + var funcType = checkExpression(node.expression); + if (ts.isCallChain(node)) { + var nonOptionalType = getOptionalExpressionType(funcType, node.expression); + callChainFlags = nonOptionalType === funcType ? 0 /* None */ : + ts.isOutermostOptionalChain(node) ? 8 /* IsOuterCallChain */ : + 4 /* IsInnerCallChain */; + funcType = nonOptionalType; + } + else { + callChainFlags = 0 /* None */; + } + funcType = checkNonNullTypeWithReporter(funcType, node.expression, reportCannotInvokePossiblyNullOrUndefinedError); + if (funcType === silentNeverType) { + return silentNeverSignature; + } + var apparentType = getApparentType(funcType); + if (apparentType === errorType) { + // Another error has already been reported + return resolveErrorCall(node); + } + // Technically, this signatures list may be incomplete. We are taking the apparent type, + // but we are not including call signatures that may have been added to the Object or + // Function interface, since they have none by default. This is a bit of a leap of faith + // that the user will not add any. + var callSignatures = getSignaturesOfType(apparentType, 0 /* Call */); + var numConstructSignatures = getSignaturesOfType(apparentType, 1 /* Construct */).length; + // TS 1.0 Spec: 4.12 + // In an untyped function call no TypeArgs are permitted, Args can be any argument list, no contextual + // types are provided for the argument expressions, and the result is always of type Any. + if (isUntypedFunctionCall(funcType, apparentType, callSignatures.length, numConstructSignatures)) { + // The unknownType indicates that an error already occurred (and was reported). No + // need to report another error in this case. + if (funcType !== errorType && node.typeArguments) { + error(node, ts.Diagnostics.Untyped_function_calls_may_not_accept_type_arguments); + } + return resolveUntypedCall(node); + } + // If FuncExpr's apparent type(section 3.8.1) is a function type, the call is a typed function call. + // TypeScript employs overload resolution in typed function calls in order to support functions + // with multiple call signatures. + if (!callSignatures.length) { + if (numConstructSignatures) { + error(node, ts.Diagnostics.Value_of_type_0_is_not_callable_Did_you_mean_to_include_new, typeToString(funcType)); + } + else { + var relatedInformation = void 0; + if (node.arguments.length === 1) { + var text = ts.getSourceFileOfNode(node).text; + if (ts.isLineBreak(text.charCodeAt(ts.skipTrivia(text, node.expression.end, /* stopAfterLineBreak */ true) - 1))) { + relatedInformation = ts.createDiagnosticForNode(node.expression, ts.Diagnostics.Are_you_missing_a_semicolon); + } + } + invocationError(node.expression, apparentType, 0 /* Call */, relatedInformation); + } + return resolveErrorCall(node); + } + // When a call to a generic function is an argument to an outer call to a generic function for which + // inference is in process, we have a choice to make. If the inner call relies on inferences made from + // its contextual type to its return type, deferring the inner call processing allows the best possible + // contextual type to accumulate. But if the outer call relies on inferences made from the return type of + // the inner call, the inner call should be processed early. There's no sure way to know which choice is + // right (only a full unification algorithm can determine that), so we resort to the following heuristic: + // If no type arguments are specified in the inner call and at least one call signature is generic and + // returns a function type, we choose to defer processing. This narrowly permits function composition + // operators to flow inferences through return types, but otherwise processes calls right away. We + // use the resolvingSignature singleton to indicate that we deferred processing. This result will be + // propagated out and eventually turned into nonInferrableType (a type that is assignable to anything and + // from which we never make inferences). + if (checkMode & 8 /* SkipGenericFunctions */ && !node.typeArguments && callSignatures.some(isGenericFunctionReturningFunction)) { + skippedGenericFunction(node, checkMode); + return resolvingSignature; + } + // If the function is explicitly marked with `@class`, then it must be constructed. + if (callSignatures.some(function (sig) { return ts.isInJSFile(sig.declaration) && !!ts.getJSDocClassTag(sig.declaration); })) { + error(node, ts.Diagnostics.Value_of_type_0_is_not_callable_Did_you_mean_to_include_new, typeToString(funcType)); + return resolveErrorCall(node); + } + return resolveCall(node, callSignatures, candidatesOutArray, checkMode, callChainFlags); + } + function isGenericFunctionReturningFunction(signature) { + return !!(signature.typeParameters && isFunctionType(getReturnTypeOfSignature(signature))); + } + /** + * TS 1.0 spec: 4.12 + * If FuncExpr is of type Any, or of an object type that has no call or construct signatures + * but is a subtype of the Function interface, the call is an untyped function call. + */ + function isUntypedFunctionCall(funcType, apparentFuncType, numCallSignatures, numConstructSignatures) { + // We exclude union types because we may have a union of function types that happen to have no common signatures. + return isTypeAny(funcType) || isTypeAny(apparentFuncType) && !!(funcType.flags & 262144 /* TypeParameter */) || + !numCallSignatures && !numConstructSignatures && !(apparentFuncType.flags & (1048576 /* Union */ | 131072 /* Never */)) && isTypeAssignableTo(funcType, globalFunctionType); + } + function resolveNewExpression(node, candidatesOutArray, checkMode) { + if (node.arguments && languageVersion < 1 /* ES5 */) { + var spreadIndex = getSpreadArgumentIndex(node.arguments); + if (spreadIndex >= 0) { + error(node.arguments[spreadIndex], ts.Diagnostics.Spread_operator_in_new_expressions_is_only_available_when_targeting_ECMAScript_5_and_higher); + } + } + var expressionType = checkNonNullExpression(node.expression); + if (expressionType === silentNeverType) { + return silentNeverSignature; + } + // If expressionType's apparent type(section 3.8.1) is an object type with one or + // more construct signatures, the expression is processed in the same manner as a + // function call, but using the construct signatures as the initial set of candidate + // signatures for overload resolution. The result type of the function call becomes + // the result type of the operation. + expressionType = getApparentType(expressionType); + if (expressionType === errorType) { + // Another error has already been reported + return resolveErrorCall(node); + } + // TS 1.0 spec: 4.11 + // If expressionType is of type Any, Args can be any argument + // list and the result of the operation is of type Any. + if (isTypeAny(expressionType)) { + if (node.typeArguments) { + error(node, ts.Diagnostics.Untyped_function_calls_may_not_accept_type_arguments); + } + return resolveUntypedCall(node); + } + // Technically, this signatures list may be incomplete. We are taking the apparent type, + // but we are not including construct signatures that may have been added to the Object or + // Function interface, since they have none by default. This is a bit of a leap of faith + // that the user will not add any. + var constructSignatures = getSignaturesOfType(expressionType, 1 /* Construct */); + if (constructSignatures.length) { + if (!isConstructorAccessible(node, constructSignatures[0])) { + return resolveErrorCall(node); + } + // If the expression is a class of abstract type, then it cannot be instantiated. + // Note, only class declarations can be declared abstract. + // In the case of a merged class-module or class-interface declaration, + // only the class declaration node will have the Abstract flag set. + var valueDecl = expressionType.symbol && ts.getClassLikeDeclarationOfSymbol(expressionType.symbol); + if (valueDecl && ts.hasModifier(valueDecl, 128 /* Abstract */)) { + error(node, ts.Diagnostics.Cannot_create_an_instance_of_an_abstract_class); + return resolveErrorCall(node); + } + return resolveCall(node, constructSignatures, candidatesOutArray, checkMode, 0 /* None */); + } + // If expressionType's apparent type is an object type with no construct signatures but + // one or more call signatures, the expression is processed as a function call. A compile-time + // error occurs if the result of the function call is not Void. The type of the result of the + // operation is Any. It is an error to have a Void this type. + var callSignatures = getSignaturesOfType(expressionType, 0 /* Call */); + if (callSignatures.length) { + var signature = resolveCall(node, callSignatures, candidatesOutArray, checkMode, 0 /* None */); + if (!noImplicitAny) { + if (signature.declaration && !isJSConstructor(signature.declaration) && getReturnTypeOfSignature(signature) !== voidType) { + error(node, ts.Diagnostics.Only_a_void_function_can_be_called_with_the_new_keyword); + } + if (getThisTypeOfSignature(signature) === voidType) { + error(node, ts.Diagnostics.A_function_that_is_called_with_the_new_keyword_cannot_have_a_this_type_that_is_void); + } + } + return signature; + } + invocationError(node.expression, expressionType, 1 /* Construct */); + return resolveErrorCall(node); + } + function typeHasProtectedAccessibleBase(target, type) { + var baseTypes = getBaseTypes(type); + if (!ts.length(baseTypes)) { + return false; + } + var firstBase = baseTypes[0]; + if (firstBase.flags & 2097152 /* Intersection */) { + var types = firstBase.types; + var mixinFlags = findMixins(types); + var i = 0; + for (var _i = 0, _a = firstBase.types; _i < _a.length; _i++) { + var intersectionMember = _a[_i]; + // We want to ignore mixin ctors + if (!mixinFlags[i]) { + if (ts.getObjectFlags(intersectionMember) & (1 /* Class */ | 2 /* Interface */)) { + if (intersectionMember.symbol === target) { + return true; + } + if (typeHasProtectedAccessibleBase(target, intersectionMember)) { + return true; + } + } + } + i++; + } + return false; + } + if (firstBase.symbol === target) { + return true; + } + return typeHasProtectedAccessibleBase(target, firstBase); + } + function isConstructorAccessible(node, signature) { + if (!signature || !signature.declaration) { + return true; + } + var declaration = signature.declaration; + var modifiers = ts.getSelectedModifierFlags(declaration, 24 /* NonPublicAccessibilityModifier */); + // (1) Public constructors and (2) constructor functions are always accessible. + if (!modifiers || declaration.kind !== 162 /* Constructor */) { + return true; + } + var declaringClassDeclaration = ts.getClassLikeDeclarationOfSymbol(declaration.parent.symbol); + var declaringClass = getDeclaredTypeOfSymbol(declaration.parent.symbol); + // A private or protected constructor can only be instantiated within its own class (or a subclass, for protected) + if (!isNodeWithinClass(node, declaringClassDeclaration)) { + var containingClass = ts.getContainingClass(node); + if (containingClass && modifiers & 16 /* Protected */) { + var containingType = getTypeOfNode(containingClass); + if (typeHasProtectedAccessibleBase(declaration.parent.symbol, containingType)) { + return true; + } + } + if (modifiers & 8 /* Private */) { + error(node, ts.Diagnostics.Constructor_of_class_0_is_private_and_only_accessible_within_the_class_declaration, typeToString(declaringClass)); + } + if (modifiers & 16 /* Protected */) { + error(node, ts.Diagnostics.Constructor_of_class_0_is_protected_and_only_accessible_within_the_class_declaration, typeToString(declaringClass)); + } + return false; + } + return true; + } + function invocationErrorDetails(apparentType, kind) { + var errorInfo; + var isCall = kind === 0 /* Call */; + var awaitedType = getAwaitedType(apparentType); + var maybeMissingAwait = awaitedType && getSignaturesOfType(awaitedType, kind).length > 0; + if (apparentType.flags & 1048576 /* Union */) { + var types = apparentType.types; + var hasSignatures = false; + for (var _i = 0, types_18 = types; _i < types_18.length; _i++) { + var constituent = types_18[_i]; + var signatures = getSignaturesOfType(constituent, kind); + if (signatures.length !== 0) { + hasSignatures = true; + if (errorInfo) { + // Bail early if we already have an error, no chance of "No constituent of type is callable" + break; + } + } + else { + // Error on the first non callable constituent only + if (!errorInfo) { + errorInfo = ts.chainDiagnosticMessages(errorInfo, isCall ? + ts.Diagnostics.Type_0_has_no_call_signatures : + ts.Diagnostics.Type_0_has_no_construct_signatures, typeToString(constituent)); + errorInfo = ts.chainDiagnosticMessages(errorInfo, isCall ? + ts.Diagnostics.Not_all_constituents_of_type_0_are_callable : + ts.Diagnostics.Not_all_constituents_of_type_0_are_constructable, typeToString(apparentType)); + } + if (hasSignatures) { + // Bail early if we already found a siganture, no chance of "No constituent of type is callable" + break; + } + } + } + if (!hasSignatures) { + errorInfo = ts.chainDiagnosticMessages( + /* detials */ undefined, isCall ? + ts.Diagnostics.No_constituent_of_type_0_is_callable : + ts.Diagnostics.No_constituent_of_type_0_is_constructable, typeToString(apparentType)); + } + if (!errorInfo) { + errorInfo = ts.chainDiagnosticMessages(errorInfo, isCall ? + ts.Diagnostics.Each_member_of_the_union_type_0_has_signatures_but_none_of_those_signatures_are_compatible_with_each_other : + ts.Diagnostics.Each_member_of_the_union_type_0_has_construct_signatures_but_none_of_those_signatures_are_compatible_with_each_other, typeToString(apparentType)); + } + } + else { + errorInfo = ts.chainDiagnosticMessages(errorInfo, isCall ? + ts.Diagnostics.Type_0_has_no_call_signatures : + ts.Diagnostics.Type_0_has_no_construct_signatures, typeToString(apparentType)); + } + return { + messageChain: ts.chainDiagnosticMessages(errorInfo, isCall ? ts.Diagnostics.This_expression_is_not_callable : ts.Diagnostics.This_expression_is_not_constructable), + relatedMessage: maybeMissingAwait ? ts.Diagnostics.Did_you_forget_to_use_await : undefined, + }; + } + function invocationError(errorTarget, apparentType, kind, relatedInformation) { + var _a = invocationErrorDetails(apparentType, kind), messageChain = _a.messageChain, relatedInfo = _a.relatedMessage; + var diagnostic = ts.createDiagnosticForNodeFromMessageChain(errorTarget, messageChain); + if (relatedInfo) { + ts.addRelatedInfo(diagnostic, ts.createDiagnosticForNode(errorTarget, relatedInfo)); + } + if (ts.isCallExpression(errorTarget.parent)) { + var _b = getDiagnosticSpanForCallNode(errorTarget.parent, /* doNotIncludeArguments */ true), start = _b.start, length_7 = _b.length; + diagnostic.start = start; + diagnostic.length = length_7; + } + diagnostics.add(diagnostic); + invocationErrorRecovery(apparentType, kind, relatedInformation ? ts.addRelatedInfo(diagnostic, relatedInformation) : diagnostic); + } + function invocationErrorRecovery(apparentType, kind, diagnostic) { + if (!apparentType.symbol) { + return; + } + var importNode = getSymbolLinks(apparentType.symbol).originatingImport; + // Create a diagnostic on the originating import if possible onto which we can attach a quickfix + // An import call expression cannot be rewritten into another form to correct the error - the only solution is to use `.default` at the use-site + if (importNode && !ts.isImportCall(importNode)) { + var sigs = getSignaturesOfType(getTypeOfSymbol(getSymbolLinks(apparentType.symbol).target), kind); + if (!sigs || !sigs.length) + return; + ts.addRelatedInfo(diagnostic, ts.createDiagnosticForNode(importNode, ts.Diagnostics.Type_originates_at_this_import_A_namespace_style_import_cannot_be_called_or_constructed_and_will_cause_a_failure_at_runtime_Consider_using_a_default_import_or_import_require_here_instead)); + } + } + function resolveTaggedTemplateExpression(node, candidatesOutArray, checkMode) { + var tagType = checkExpression(node.tag); + var apparentType = getApparentType(tagType); + if (apparentType === errorType) { + // Another error has already been reported + return resolveErrorCall(node); + } + var callSignatures = getSignaturesOfType(apparentType, 0 /* Call */); + var numConstructSignatures = getSignaturesOfType(apparentType, 1 /* Construct */).length; + if (isUntypedFunctionCall(tagType, apparentType, callSignatures.length, numConstructSignatures)) { + return resolveUntypedCall(node); + } + if (!callSignatures.length) { + invocationError(node.tag, apparentType, 0 /* Call */); + return resolveErrorCall(node); + } + return resolveCall(node, callSignatures, candidatesOutArray, checkMode, 0 /* None */); + } + /** + * Gets the localized diagnostic head message to use for errors when resolving a decorator as a call expression. + */ + function getDiagnosticHeadMessageForDecoratorResolution(node) { + switch (node.parent.kind) { + case 245 /* ClassDeclaration */: + case 214 /* ClassExpression */: + return ts.Diagnostics.Unable_to_resolve_signature_of_class_decorator_when_called_as_an_expression; + case 156 /* Parameter */: + return ts.Diagnostics.Unable_to_resolve_signature_of_parameter_decorator_when_called_as_an_expression; + case 159 /* PropertyDeclaration */: + return ts.Diagnostics.Unable_to_resolve_signature_of_property_decorator_when_called_as_an_expression; + case 161 /* MethodDeclaration */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + return ts.Diagnostics.Unable_to_resolve_signature_of_method_decorator_when_called_as_an_expression; + default: + return ts.Debug.fail(); + } + } + /** + * Resolves a decorator as if it were a call expression. + */ + function resolveDecorator(node, candidatesOutArray, checkMode) { + var funcType = checkExpression(node.expression); + var apparentType = getApparentType(funcType); + if (apparentType === errorType) { + return resolveErrorCall(node); + } + var callSignatures = getSignaturesOfType(apparentType, 0 /* Call */); + var numConstructSignatures = getSignaturesOfType(apparentType, 1 /* Construct */).length; + if (isUntypedFunctionCall(funcType, apparentType, callSignatures.length, numConstructSignatures)) { + return resolveUntypedCall(node); + } + if (isPotentiallyUncalledDecorator(node, callSignatures)) { + var nodeStr = ts.getTextOfNode(node.expression, /*includeTrivia*/ false); + error(node, ts.Diagnostics._0_accepts_too_few_arguments_to_be_used_as_a_decorator_here_Did_you_mean_to_call_it_first_and_write_0, nodeStr); + return resolveErrorCall(node); + } + var headMessage = getDiagnosticHeadMessageForDecoratorResolution(node); + if (!callSignatures.length) { + var errorDetails = invocationErrorDetails(apparentType, 0 /* Call */); + var messageChain = ts.chainDiagnosticMessages(errorDetails.messageChain, headMessage); + var diag = ts.createDiagnosticForNodeFromMessageChain(node.expression, messageChain); + if (errorDetails.relatedMessage) { + ts.addRelatedInfo(diag, ts.createDiagnosticForNode(node.expression, errorDetails.relatedMessage)); + } + diagnostics.add(diag); + invocationErrorRecovery(apparentType, 0 /* Call */, diag); + return resolveErrorCall(node); + } + return resolveCall(node, callSignatures, candidatesOutArray, checkMode, 0 /* None */, headMessage); + } + function createSignatureForJSXIntrinsic(node, result) { + var namespace = getJsxNamespaceAt(node); + var exports = namespace && getExportsOfSymbol(namespace); + // We fake up a SFC signature for each intrinsic, however a more specific per-element signature drawn from the JSX declaration + // file would probably be preferable. + var typeSymbol = exports && getSymbol(exports, JsxNames.Element, 788968 /* Type */); + var returnNode = typeSymbol && nodeBuilder.symbolToEntityName(typeSymbol, 788968 /* Type */, node); + var declaration = ts.createFunctionTypeNode(/*typeParameters*/ undefined, [ts.createParameter(/*decorators*/ undefined, /*modifiers*/ undefined, /*dotdotdot*/ undefined, "props", /*questionMark*/ undefined, nodeBuilder.typeToTypeNode(result, node))], returnNode ? ts.createTypeReferenceNode(returnNode, /*typeArguments*/ undefined) : ts.createKeywordTypeNode(125 /* AnyKeyword */)); + var parameterSymbol = createSymbol(1 /* FunctionScopedVariable */, "props"); + parameterSymbol.type = result; + return createSignature(declaration, + /*typeParameters*/ undefined, + /*thisParameter*/ undefined, [parameterSymbol], typeSymbol ? getDeclaredTypeOfSymbol(typeSymbol) : errorType, + /*returnTypePredicate*/ undefined, 1, 0 /* None */); + } + function resolveJsxOpeningLikeElement(node, candidatesOutArray, checkMode) { + if (isJsxIntrinsicIdentifier(node.tagName)) { + var result = getIntrinsicAttributesTypeFromJsxOpeningLikeElement(node); + var fakeSignature = createSignatureForJSXIntrinsic(node, result); + checkTypeAssignableToAndOptionallyElaborate(checkExpressionWithContextualType(node.attributes, getEffectiveFirstArgumentForJsxSignature(fakeSignature, node), /*mapper*/ undefined, 0 /* Normal */), result, node.tagName, node.attributes); + return fakeSignature; + } + var exprTypes = checkExpression(node.tagName); + var apparentType = getApparentType(exprTypes); + if (apparentType === errorType) { + return resolveErrorCall(node); + } + var signatures = getUninstantiatedJsxSignaturesOfType(exprTypes, node); + if (isUntypedFunctionCall(exprTypes, apparentType, signatures.length, /*constructSignatures*/ 0)) { + return resolveUntypedCall(node); + } + if (signatures.length === 0) { + // We found no signatures at all, which is an error + error(node.tagName, ts.Diagnostics.JSX_element_type_0_does_not_have_any_construct_or_call_signatures, ts.getTextOfNode(node.tagName)); + return resolveErrorCall(node); + } + return resolveCall(node, signatures, candidatesOutArray, checkMode, 0 /* None */); + } + /** + * Sometimes, we have a decorator that could accept zero arguments, + * but is receiving too many arguments as part of the decorator invocation. + * In those cases, a user may have meant to *call* the expression before using it as a decorator. + */ + function isPotentiallyUncalledDecorator(decorator, signatures) { + return signatures.length && ts.every(signatures, function (signature) { + return signature.minArgumentCount === 0 && + !signatureHasRestParameter(signature) && + signature.parameters.length < getDecoratorArgumentCount(decorator, signature); + }); + } + function resolveSignature(node, candidatesOutArray, checkMode) { + switch (node.kind) { + case 196 /* CallExpression */: + return resolveCallExpression(node, candidatesOutArray, checkMode); + case 197 /* NewExpression */: + return resolveNewExpression(node, candidatesOutArray, checkMode); + case 198 /* TaggedTemplateExpression */: + return resolveTaggedTemplateExpression(node, candidatesOutArray, checkMode); + case 157 /* Decorator */: + return resolveDecorator(node, candidatesOutArray, checkMode); + case 268 /* JsxOpeningElement */: + case 267 /* JsxSelfClosingElement */: + return resolveJsxOpeningLikeElement(node, candidatesOutArray, checkMode); + } + throw ts.Debug.assertNever(node, "Branch in 'resolveSignature' should be unreachable."); + } + /** + * Resolve a signature of a given call-like expression. + * @param node a call-like expression to try resolve a signature for + * @param candidatesOutArray an array of signature to be filled in by the function. It is passed by signature help in the language service; + * the function will fill it up with appropriate candidate signatures + * @return a signature of the call-like expression or undefined if one can't be found + */ + function getResolvedSignature(node, candidatesOutArray, checkMode) { + var links = getNodeLinks(node); + // If getResolvedSignature has already been called, we will have cached the resolvedSignature. + // However, it is possible that either candidatesOutArray was not passed in the first time, + // or that a different candidatesOutArray was passed in. Therefore, we need to redo the work + // to correctly fill the candidatesOutArray. + var cached = links.resolvedSignature; + if (cached && cached !== resolvingSignature && !candidatesOutArray) { + return cached; + } + links.resolvedSignature = resolvingSignature; + var result = resolveSignature(node, candidatesOutArray, checkMode || 0 /* Normal */); + // When CheckMode.SkipGenericFunctions is set we use resolvingSignature to indicate that call + // resolution should be deferred. + if (result !== resolvingSignature) { + // If signature resolution originated in control flow type analysis (for example to compute the + // assigned type in a flow assignment) we don't cache the result as it may be based on temporary + // types from the control flow analysis. + links.resolvedSignature = flowLoopStart === flowLoopCount ? result : cached; + } + return result; + } + /** + * Indicates whether a declaration can be treated as a constructor in a JavaScript + * file. + */ + function isJSConstructor(node) { + if (!node || !ts.isInJSFile(node)) { + return false; + } + var func = ts.isFunctionDeclaration(node) || ts.isFunctionExpression(node) ? node : + ts.isVariableDeclaration(node) && node.initializer && ts.isFunctionExpression(node.initializer) ? node.initializer : + undefined; + if (func) { + // If the node has a @class tag, treat it like a constructor. + if (ts.getJSDocClassTag(node)) + return true; + // If the symbol of the node has members, treat it like a constructor. + var symbol = getSymbolOfNode(func); + return !!symbol && ts.hasEntries(symbol.members); + } + return false; + } + function mergeJSSymbols(target, source) { + if (source) { + var links = getSymbolLinks(source); + if (!links.inferredClassSymbol || !links.inferredClassSymbol.has("" + getSymbolId(target))) { + var inferred = ts.isTransientSymbol(target) ? target : cloneSymbol(target); + inferred.exports = inferred.exports || ts.createSymbolTable(); + inferred.members = inferred.members || ts.createSymbolTable(); + inferred.flags |= source.flags & 32 /* Class */; + if (ts.hasEntries(source.exports)) { + mergeSymbolTable(inferred.exports, source.exports); + } + if (ts.hasEntries(source.members)) { + mergeSymbolTable(inferred.members, source.members); + } + (links.inferredClassSymbol || (links.inferredClassSymbol = ts.createMap())).set("" + getSymbolId(inferred), inferred); + return inferred; + } + return links.inferredClassSymbol.get("" + getSymbolId(target)); + } + } + function getAssignedClassSymbol(decl) { + var assignmentSymbol = decl && decl.parent && + (ts.isFunctionDeclaration(decl) && getSymbolOfNode(decl) || + ts.isBinaryExpression(decl.parent) && getSymbolOfNode(decl.parent.left) || + ts.isVariableDeclaration(decl.parent) && getSymbolOfNode(decl.parent)); + var prototype = assignmentSymbol && assignmentSymbol.exports && assignmentSymbol.exports.get("prototype"); + var init = prototype && prototype.valueDeclaration && getAssignedJSPrototype(prototype.valueDeclaration); + return init ? getSymbolOfNode(init) : undefined; + } + function getAssignedJSPrototype(node) { + if (!node.parent) { + return false; + } + var parent = node.parent; + while (parent && parent.kind === 194 /* PropertyAccessExpression */) { + parent = parent.parent; + } + if (parent && ts.isBinaryExpression(parent) && ts.isPrototypeAccess(parent.left) && parent.operatorToken.kind === 62 /* EqualsToken */) { + var right = ts.getInitializerOfBinaryExpression(parent); + return ts.isObjectLiteralExpression(right) && right; + } + } + /** + * Syntactically and semantically checks a call or new expression. + * @param node The call/new expression to be checked. + * @returns On success, the expression's signature's return type. On failure, anyType. + */ + function checkCallExpression(node, checkMode) { + if (!checkGrammarTypeArguments(node, node.typeArguments)) + checkGrammarArguments(node.arguments); + var signature = getResolvedSignature(node, /*candidatesOutArray*/ undefined, checkMode); + if (signature === resolvingSignature) { + // CheckMode.SkipGenericFunctions is enabled and this is a call to a generic function that + // returns a function type. We defer checking and return nonInferrableType. + return nonInferrableType; + } + if (node.expression.kind === 102 /* SuperKeyword */) { + return voidType; + } + if (node.kind === 197 /* NewExpression */) { + var declaration = signature.declaration; + if (declaration && + declaration.kind !== 162 /* Constructor */ && + declaration.kind !== 166 /* ConstructSignature */ && + declaration.kind !== 171 /* ConstructorType */ && + !ts.isJSDocConstructSignature(declaration) && + !isJSConstructor(declaration)) { + // When resolved signature is a call signature (and not a construct signature) the result type is any + if (noImplicitAny) { + error(node, ts.Diagnostics.new_expression_whose_target_lacks_a_construct_signature_implicitly_has_an_any_type); + } + return anyType; + } + } + // In JavaScript files, calls to any identifier 'require' are treated as external module imports + if (ts.isInJSFile(node) && isCommonJsRequire(node)) { + return resolveExternalModuleTypeByLiteral(node.arguments[0]); + } + var returnType = getReturnTypeOfSignature(signature); + // Treat any call to the global 'Symbol' function that is part of a const variable or readonly property + // as a fresh unique symbol literal type. + if (returnType.flags & 12288 /* ESSymbolLike */ && isSymbolOrSymbolForCall(node)) { + return getESSymbolLikeTypeForNode(ts.walkUpParenthesizedExpressions(node.parent)); + } + if (node.kind === 196 /* CallExpression */ && node.parent.kind === 226 /* ExpressionStatement */ && + returnType.flags & 16384 /* Void */ && getTypePredicateOfSignature(signature)) { + if (!ts.isDottedName(node.expression)) { + error(node.expression, ts.Diagnostics.Assertions_require_the_call_target_to_be_an_identifier_or_qualified_name); + } + else if (!getEffectsSignature(node)) { + var diagnostic = error(node.expression, ts.Diagnostics.Assertions_require_every_name_in_the_call_target_to_be_declared_with_an_explicit_type_annotation); + getTypeOfDottedName(node.expression, diagnostic); + } + } + if (ts.isInJSFile(node)) { + var decl = ts.getDeclarationOfExpando(node); + if (decl) { + var jsSymbol = getSymbolOfNode(decl); + if (jsSymbol && ts.hasEntries(jsSymbol.exports)) { + var jsAssignmentType = createAnonymousType(jsSymbol, jsSymbol.exports, ts.emptyArray, ts.emptyArray, undefined, undefined); + jsAssignmentType.objectFlags |= 16384 /* JSLiteral */; + return getIntersectionType([returnType, jsAssignmentType]); + } + } + } + return returnType; + } + function isSymbolOrSymbolForCall(node) { + if (!ts.isCallExpression(node)) + return false; + var left = node.expression; + if (ts.isPropertyAccessExpression(left) && left.name.escapedText === "for") { + left = left.expression; + } + if (!ts.isIdentifier(left) || left.escapedText !== "Symbol") { + return false; + } + // make sure `Symbol` is the global symbol + var globalESSymbol = getGlobalESSymbolConstructorSymbol(/*reportErrors*/ false); + if (!globalESSymbol) { + return false; + } + return globalESSymbol === resolveName(left, "Symbol", 111551 /* Value */, /*nameNotFoundMessage*/ undefined, /*nameArg*/ undefined, /*isUse*/ false); + } + function checkImportCallExpression(node) { + // Check grammar of dynamic import + if (!checkGrammarArguments(node.arguments)) + checkGrammarImportCallExpression(node); + if (node.arguments.length === 0) { + return createPromiseReturnType(node, anyType); + } + var specifier = node.arguments[0]; + var specifierType = checkExpressionCached(specifier); + // Even though multiple arguments is grammatically incorrect, type-check extra arguments for completion + for (var i = 1; i < node.arguments.length; ++i) { + checkExpressionCached(node.arguments[i]); + } + if (specifierType.flags & 32768 /* Undefined */ || specifierType.flags & 65536 /* Null */ || !isTypeAssignableTo(specifierType, stringType)) { + error(specifier, ts.Diagnostics.Dynamic_import_s_specifier_must_be_of_type_string_but_here_has_type_0, typeToString(specifierType)); + } + // resolveExternalModuleName will return undefined if the moduleReferenceExpression is not a string literal + var moduleSymbol = resolveExternalModuleName(node, specifier); + if (moduleSymbol) { + var esModuleSymbol = resolveESModuleSymbol(moduleSymbol, specifier, /*dontRecursivelyResolve*/ true, /*suppressUsageError*/ false); + if (esModuleSymbol) { + return createPromiseReturnType(node, getTypeWithSyntheticDefaultImportType(getTypeOfSymbol(esModuleSymbol), esModuleSymbol, moduleSymbol)); + } + } + return createPromiseReturnType(node, anyType); + } + function getTypeWithSyntheticDefaultImportType(type, symbol, originalSymbol) { + if (allowSyntheticDefaultImports && type && type !== errorType) { + var synthType = type; + if (!synthType.syntheticType) { + var file = ts.find(originalSymbol.declarations, ts.isSourceFile); + var hasSyntheticDefault = canHaveSyntheticDefault(file, originalSymbol, /*dontResolveAlias*/ false); + if (hasSyntheticDefault) { + var memberTable = ts.createSymbolTable(); + var newSymbol = createSymbol(2097152 /* Alias */, "default" /* Default */); + newSymbol.nameType = getLiteralType("default"); + newSymbol.target = resolveSymbol(symbol); + memberTable.set("default" /* Default */, newSymbol); + var anonymousSymbol = createSymbol(2048 /* TypeLiteral */, "__type" /* Type */); + var defaultContainingObject = createAnonymousType(anonymousSymbol, memberTable, ts.emptyArray, ts.emptyArray, /*stringIndexInfo*/ undefined, /*numberIndexInfo*/ undefined); + anonymousSymbol.type = defaultContainingObject; + synthType.syntheticType = isValidSpreadType(type) ? getSpreadType(type, defaultContainingObject, anonymousSymbol, /*objectFlags*/ 0, /*readonly*/ false) : defaultContainingObject; + } + else { + synthType.syntheticType = type; + } + } + return synthType.syntheticType; + } + return type; + } + function isCommonJsRequire(node) { + if (!ts.isRequireCall(node, /*checkArgumentIsStringLiteralLike*/ true)) { + return false; + } + // Make sure require is not a local function + if (!ts.isIdentifier(node.expression)) + return ts.Debug.fail(); + var resolvedRequire = resolveName(node.expression, node.expression.escapedText, 111551 /* Value */, /*nameNotFoundMessage*/ undefined, /*nameArg*/ undefined, /*isUse*/ true); // TODO: GH#18217 + if (resolvedRequire === requireSymbol) { + return true; + } + // project includes symbol named 'require' - make sure that it is ambient and local non-alias + if (resolvedRequire.flags & 2097152 /* Alias */) { + return false; + } + var targetDeclarationKind = resolvedRequire.flags & 16 /* Function */ + ? 244 /* FunctionDeclaration */ + : resolvedRequire.flags & 3 /* Variable */ + ? 242 /* VariableDeclaration */ + : 0 /* Unknown */; + if (targetDeclarationKind !== 0 /* Unknown */) { + var decl = ts.getDeclarationOfKind(resolvedRequire, targetDeclarationKind); + // function/variable declaration should be ambient + return !!decl && !!(decl.flags & 8388608 /* Ambient */); + } + return false; + } + function checkTaggedTemplateExpression(node) { + if (!checkGrammarTaggedTemplateChain(node)) + checkGrammarTypeArguments(node, node.typeArguments); + if (languageVersion < 2 /* ES2015 */) { + checkExternalEmitHelpers(node, 131072 /* MakeTemplateObject */); + } + return getReturnTypeOfSignature(getResolvedSignature(node)); + } + function checkAssertion(node) { + return checkAssertionWorker(node, node.type, node.expression); + } + function isValidConstAssertionArgument(node) { + switch (node.kind) { + case 10 /* StringLiteral */: + case 14 /* NoSubstitutionTemplateLiteral */: + case 8 /* NumericLiteral */: + case 9 /* BigIntLiteral */: + case 106 /* TrueKeyword */: + case 91 /* FalseKeyword */: + case 192 /* ArrayLiteralExpression */: + case 193 /* ObjectLiteralExpression */: + return true; + case 200 /* ParenthesizedExpression */: + return isValidConstAssertionArgument(node.expression); + case 207 /* PrefixUnaryExpression */: + var op = node.operator; + var arg = node.operand; + return op === 40 /* MinusToken */ && (arg.kind === 8 /* NumericLiteral */ || arg.kind === 9 /* BigIntLiteral */) || + op === 39 /* PlusToken */ && arg.kind === 8 /* NumericLiteral */; + case 194 /* PropertyAccessExpression */: + case 195 /* ElementAccessExpression */: + var expr = node.expression; + if (ts.isIdentifier(expr)) { + var symbol = getSymbolAtLocation(expr); + if (symbol && symbol.flags & 2097152 /* Alias */) { + symbol = resolveAlias(symbol); + } + return !!(symbol && (symbol.flags & 384 /* Enum */) && getEnumKind(symbol) === 1 /* Literal */); + } + } + return false; + } + function checkAssertionWorker(errNode, type, expression, checkMode) { + var exprType = checkExpression(expression, checkMode); + if (ts.isConstTypeReference(type)) { + if (!isValidConstAssertionArgument(expression)) { + error(expression, ts.Diagnostics.A_const_assertions_can_only_be_applied_to_references_to_enum_members_or_string_number_boolean_array_or_object_literals); + } + return getRegularTypeOfLiteralType(exprType); + } + checkSourceElement(type); + exprType = getRegularTypeOfObjectLiteral(getBaseTypeOfLiteralType(exprType)); + var targetType = getTypeFromTypeNode(type); + if (produceDiagnostics && targetType !== errorType) { + var widenedType = getWidenedType(exprType); + if (!isTypeComparableTo(targetType, widenedType)) { + checkTypeComparableTo(exprType, targetType, errNode, ts.Diagnostics.Conversion_of_type_0_to_type_1_may_be_a_mistake_because_neither_type_sufficiently_overlaps_with_the_other_If_this_was_intentional_convert_the_expression_to_unknown_first); + } + } + return targetType; + } + function checkNonNullChain(node) { + var leftType = checkExpression(node.expression); + var nonOptionalType = getOptionalExpressionType(leftType, node.expression); + return propagateOptionalTypeMarker(getNonNullableType(nonOptionalType), node, nonOptionalType !== leftType); + } + function checkNonNullAssertion(node) { + return node.flags & 32 /* OptionalChain */ ? checkNonNullChain(node) : + getNonNullableType(checkExpression(node.expression)); + } + function checkMetaProperty(node) { + checkGrammarMetaProperty(node); + if (node.keywordToken === 99 /* NewKeyword */) { + return checkNewTargetMetaProperty(node); + } + if (node.keywordToken === 96 /* ImportKeyword */) { + return checkImportMetaProperty(node); + } + return ts.Debug.assertNever(node.keywordToken); + } + function checkNewTargetMetaProperty(node) { + var container = ts.getNewTargetContainer(node); + if (!container) { + error(node, ts.Diagnostics.Meta_property_0_is_only_allowed_in_the_body_of_a_function_declaration_function_expression_or_constructor, "new.target"); + return errorType; + } + else if (container.kind === 162 /* Constructor */) { + var symbol = getSymbolOfNode(container.parent); + return getTypeOfSymbol(symbol); + } + else { + var symbol = getSymbolOfNode(container); + return getTypeOfSymbol(symbol); + } + } + function checkImportMetaProperty(node) { + if (moduleKind !== ts.ModuleKind.ESNext && moduleKind !== ts.ModuleKind.System) { + error(node, ts.Diagnostics.The_import_meta_meta_property_is_only_allowed_when_the_module_option_is_esnext_or_system); + } + var file = ts.getSourceFileOfNode(node); + ts.Debug.assert(!!(file.flags & 2097152 /* PossiblyContainsImportMeta */), "Containing file is missing import meta node flag."); + ts.Debug.assert(!!file.externalModuleIndicator, "Containing file should be a module."); + return node.name.escapedText === "meta" ? getGlobalImportMetaType() : errorType; + } + function getTypeOfParameter(symbol) { + var type = getTypeOfSymbol(symbol); + if (strictNullChecks) { + var declaration = symbol.valueDeclaration; + if (declaration && ts.hasInitializer(declaration)) { + return getOptionalType(type); + } + } + return type; + } + function getParameterNameAtPosition(signature, pos) { + var paramCount = signature.parameters.length - (signatureHasRestParameter(signature) ? 1 : 0); + if (pos < paramCount) { + return signature.parameters[pos].escapedName; + } + var restParameter = signature.parameters[paramCount] || unknownSymbol; + var restType = getTypeOfSymbol(restParameter); + if (isTupleType(restType)) { + var associatedNames = restType.target.associatedNames; + var index = pos - paramCount; + return associatedNames && associatedNames[index] || restParameter.escapedName + "_" + index; + } + return restParameter.escapedName; + } + function getTypeAtPosition(signature, pos) { + return tryGetTypeAtPosition(signature, pos) || anyType; + } + function tryGetTypeAtPosition(signature, pos) { + var paramCount = signature.parameters.length - (signatureHasRestParameter(signature) ? 1 : 0); + if (pos < paramCount) { + return getTypeOfParameter(signature.parameters[pos]); + } + if (signatureHasRestParameter(signature)) { + // We want to return the value undefined for an out of bounds parameter position, + // so we need to check bounds here before calling getIndexedAccessType (which + // otherwise would return the type 'undefined'). + var restType = getTypeOfSymbol(signature.parameters[paramCount]); + var index = pos - paramCount; + if (!isTupleType(restType) || restType.target.hasRestElement || index < getTypeArguments(restType).length) { + return getIndexedAccessType(restType, getLiteralType(index)); + } + } + return undefined; + } + function getRestTypeAtPosition(source, pos) { + var paramCount = getParameterCount(source); + var restType = getEffectiveRestType(source); + var nonRestCount = paramCount - (restType ? 1 : 0); + if (restType && pos === nonRestCount) { + return restType; + } + var types = []; + var names = []; + for (var i = pos; i < nonRestCount; i++) { + types.push(getTypeAtPosition(source, i)); + names.push(getParameterNameAtPosition(source, i)); + } + if (restType) { + types.push(getIndexedAccessType(restType, numberType)); + names.push(getParameterNameAtPosition(source, nonRestCount)); + } + var minArgumentCount = getMinArgumentCount(source); + var minLength = minArgumentCount < pos ? 0 : minArgumentCount - pos; + return createTupleType(types, minLength, !!restType, /*readonly*/ false, names); + } + function getParameterCount(signature) { + var length = signature.parameters.length; + if (signatureHasRestParameter(signature)) { + var restType = getTypeOfSymbol(signature.parameters[length - 1]); + if (isTupleType(restType)) { + return length + getTypeArguments(restType).length - 1; + } + } + return length; + } + function getMinArgumentCount(signature, strongArityForUntypedJS) { + if (signatureHasRestParameter(signature)) { + var restType = getTypeOfSymbol(signature.parameters[signature.parameters.length - 1]); + if (isTupleType(restType)) { + var minLength = restType.target.minLength; + if (minLength > 0) { + return signature.parameters.length - 1 + minLength; + } + } + } + if (!strongArityForUntypedJS && signature.flags & 16 /* IsUntypedSignatureInJSFile */) { + return 0; + } + return signature.minArgumentCount; + } + function hasEffectiveRestParameter(signature) { + if (signatureHasRestParameter(signature)) { + var restType = getTypeOfSymbol(signature.parameters[signature.parameters.length - 1]); + return !isTupleType(restType) || restType.target.hasRestElement; + } + return false; + } + function getEffectiveRestType(signature) { + if (signatureHasRestParameter(signature)) { + var restType = getTypeOfSymbol(signature.parameters[signature.parameters.length - 1]); + return isTupleType(restType) ? getRestArrayTypeOfTupleType(restType) : restType; + } + return undefined; + } + function getNonArrayRestType(signature) { + var restType = getEffectiveRestType(signature); + return restType && !isArrayType(restType) && !isTypeAny(restType) && (getReducedType(restType).flags & 131072 /* Never */) === 0 ? restType : undefined; + } + function getTypeOfFirstParameterOfSignature(signature) { + return getTypeOfFirstParameterOfSignatureWithFallback(signature, neverType); + } + function getTypeOfFirstParameterOfSignatureWithFallback(signature, fallbackType) { + return signature.parameters.length > 0 ? getTypeAtPosition(signature, 0) : fallbackType; + } + function inferFromAnnotatedParameters(signature, context, inferenceContext) { + var len = signature.parameters.length - (signatureHasRestParameter(signature) ? 1 : 0); + for (var i = 0; i < len; i++) { + var declaration = signature.parameters[i].valueDeclaration; + if (declaration.type) { + var typeNode = ts.getEffectiveTypeAnnotationNode(declaration); + if (typeNode) { + inferTypes(inferenceContext.inferences, getTypeFromTypeNode(typeNode), getTypeAtPosition(context, i)); + } + } + } + var restType = getEffectiveRestType(context); + if (restType && restType.flags & 262144 /* TypeParameter */) { + // The contextual signature has a generic rest parameter. We first instantiate the contextual + // signature (without fixing type parameters) and assign types to contextually typed parameters. + var instantiatedContext = instantiateSignature(context, inferenceContext.nonFixingMapper); + assignContextualParameterTypes(signature, instantiatedContext); + // We then infer from a tuple type representing the parameters that correspond to the contextual + // rest parameter. + var restPos = getParameterCount(context) - 1; + inferTypes(inferenceContext.inferences, getRestTypeAtPosition(signature, restPos), restType); + } + } + function assignContextualParameterTypes(signature, context) { + signature.typeParameters = context.typeParameters; + if (context.thisParameter) { + var parameter = signature.thisParameter; + if (!parameter || parameter.valueDeclaration && !parameter.valueDeclaration.type) { + if (!parameter) { + signature.thisParameter = createSymbolWithType(context.thisParameter, /*type*/ undefined); + } + assignParameterType(signature.thisParameter, getTypeOfSymbol(context.thisParameter)); + } + } + var len = signature.parameters.length - (signatureHasRestParameter(signature) ? 1 : 0); + for (var i = 0; i < len; i++) { + var parameter = signature.parameters[i]; + if (!ts.getEffectiveTypeAnnotationNode(parameter.valueDeclaration)) { + var contextualParameterType = tryGetTypeAtPosition(context, i); + assignParameterType(parameter, contextualParameterType); + } + } + if (signatureHasRestParameter(signature)) { + // parameter might be a transient symbol generated by use of `arguments` in the function body. + var parameter = ts.last(signature.parameters); + if (ts.isTransientSymbol(parameter) || !ts.getEffectiveTypeAnnotationNode(parameter.valueDeclaration)) { + var contextualParameterType = getRestTypeAtPosition(context, len); + assignParameterType(parameter, contextualParameterType); + } + } + } + function assignNonContextualParameterTypes(signature) { + if (signature.thisParameter) { + assignParameterType(signature.thisParameter); + } + for (var _i = 0, _a = signature.parameters; _i < _a.length; _i++) { + var parameter = _a[_i]; + assignParameterType(parameter); + } + } + function assignParameterType(parameter, type) { + var links = getSymbolLinks(parameter); + if (!links.type) { + var declaration = parameter.valueDeclaration; + links.type = type || getWidenedTypeForVariableLikeDeclaration(declaration, /*includeOptionality*/ true); + if (declaration.name.kind !== 75 /* Identifier */) { + // if inference didn't come up with anything but unknown, fall back to the binding pattern if present. + if (links.type === unknownType) { + links.type = getTypeFromBindingPattern(declaration.name); + } + assignBindingElementTypes(declaration.name); + } + } + } + // When contextual typing assigns a type to a parameter that contains a binding pattern, we also need to push + // the destructured type into the contained binding elements. + function assignBindingElementTypes(pattern) { + for (var _i = 0, _a = pattern.elements; _i < _a.length; _i++) { + var element = _a[_i]; + if (!ts.isOmittedExpression(element)) { + if (element.name.kind === 75 /* Identifier */) { + getSymbolLinks(getSymbolOfNode(element)).type = getTypeForBindingElement(element); + } + else { + assignBindingElementTypes(element.name); + } + } + } + } + function createPromiseType(promisedType) { + // creates a `Promise` type where `T` is the promisedType argument + var globalPromiseType = getGlobalPromiseType(/*reportErrors*/ true); + if (globalPromiseType !== emptyGenericType) { + // if the promised type is itself a promise, get the underlying type; otherwise, fallback to the promised type + promisedType = getAwaitedType(promisedType) || unknownType; + return createTypeReference(globalPromiseType, [promisedType]); + } + return unknownType; + } + function createPromiseLikeType(promisedType) { + // creates a `PromiseLike` type where `T` is the promisedType argument + var globalPromiseLikeType = getGlobalPromiseLikeType(/*reportErrors*/ true); + if (globalPromiseLikeType !== emptyGenericType) { + // if the promised type is itself a promise, get the underlying type; otherwise, fallback to the promised type + promisedType = getAwaitedType(promisedType) || unknownType; + return createTypeReference(globalPromiseLikeType, [promisedType]); + } + return unknownType; + } + function createPromiseReturnType(func, promisedType) { + var promiseType = createPromiseType(promisedType); + if (promiseType === unknownType) { + error(func, ts.isImportCall(func) ? + ts.Diagnostics.A_dynamic_import_call_returns_a_Promise_Make_sure_you_have_a_declaration_for_Promise_or_include_ES2015_in_your_lib_option : + ts.Diagnostics.An_async_function_or_method_must_return_a_Promise_Make_sure_you_have_a_declaration_for_Promise_or_include_ES2015_in_your_lib_option); + return errorType; + } + else if (!getGlobalPromiseConstructorSymbol(/*reportErrors*/ true)) { + error(func, ts.isImportCall(func) ? + ts.Diagnostics.A_dynamic_import_call_in_ES5_SlashES3_requires_the_Promise_constructor_Make_sure_you_have_a_declaration_for_the_Promise_constructor_or_include_ES2015_in_your_lib_option : + ts.Diagnostics.An_async_function_or_method_in_ES5_SlashES3_requires_the_Promise_constructor_Make_sure_you_have_a_declaration_for_the_Promise_constructor_or_include_ES2015_in_your_lib_option); + } + return promiseType; + } + function getReturnTypeFromBody(func, checkMode) { + if (!func.body) { + return errorType; + } + var functionFlags = ts.getFunctionFlags(func); + var isAsync = (functionFlags & 2 /* Async */) !== 0; + var isGenerator = (functionFlags & 1 /* Generator */) !== 0; + var returnType; + var yieldType; + var nextType; + var fallbackReturnType = voidType; + if (func.body.kind !== 223 /* Block */) { // Async or normal arrow function + returnType = checkExpressionCached(func.body, checkMode && checkMode & ~8 /* SkipGenericFunctions */); + if (isAsync) { + // From within an async function you can return either a non-promise value or a promise. Any + // Promise/A+ compatible implementation will always assimilate any foreign promise, so the + // return type of the body should be unwrapped to its awaited type, which we will wrap in + // the native Promise type later in this function. + returnType = checkAwaitedType(returnType, /*errorNode*/ func, ts.Diagnostics.The_return_type_of_an_async_function_must_either_be_a_valid_promise_or_must_not_contain_a_callable_then_member); + } + } + else if (isGenerator) { // Generator or AsyncGenerator function + var returnTypes = checkAndAggregateReturnExpressionTypes(func, checkMode); + if (!returnTypes) { + fallbackReturnType = neverType; + } + else if (returnTypes.length > 0) { + returnType = getUnionType(returnTypes, 2 /* Subtype */); + } + var _a = checkAndAggregateYieldOperandTypes(func, checkMode), yieldTypes = _a.yieldTypes, nextTypes = _a.nextTypes; + yieldType = ts.some(yieldTypes) ? getUnionType(yieldTypes, 2 /* Subtype */) : undefined; + nextType = ts.some(nextTypes) ? getIntersectionType(nextTypes) : undefined; + } + else { // Async or normal function + var types = checkAndAggregateReturnExpressionTypes(func, checkMode); + if (!types) { + // For an async function, the return type will not be never, but rather a Promise for never. + return functionFlags & 2 /* Async */ + ? createPromiseReturnType(func, neverType) // Async function + : neverType; // Normal function + } + if (types.length === 0) { + // For an async function, the return type will not be void, but rather a Promise for void. + return functionFlags & 2 /* Async */ + ? createPromiseReturnType(func, voidType) // Async function + : voidType; // Normal function + } + // Return a union of the return expression types. + returnType = getUnionType(types, 2 /* Subtype */); + } + if (returnType || yieldType || nextType) { + if (yieldType) + reportErrorsFromWidening(func, yieldType, 3 /* GeneratorYield */); + if (returnType) + reportErrorsFromWidening(func, returnType, 1 /* FunctionReturn */); + if (nextType) + reportErrorsFromWidening(func, nextType, 2 /* GeneratorNext */); + if (returnType && isUnitType(returnType) || + yieldType && isUnitType(yieldType) || + nextType && isUnitType(nextType)) { + var contextualSignature = getContextualSignatureForFunctionLikeDeclaration(func); + var contextualType = !contextualSignature ? undefined : + contextualSignature === getSignatureFromDeclaration(func) ? isGenerator ? undefined : returnType : + instantiateContextualType(getReturnTypeOfSignature(contextualSignature), func); + if (isGenerator) { + yieldType = getWidenedLiteralLikeTypeForContextualIterationTypeIfNeeded(yieldType, contextualType, 0 /* Yield */, isAsync); + returnType = getWidenedLiteralLikeTypeForContextualIterationTypeIfNeeded(returnType, contextualType, 1 /* Return */, isAsync); + nextType = getWidenedLiteralLikeTypeForContextualIterationTypeIfNeeded(nextType, contextualType, 2 /* Next */, isAsync); + } + else { + returnType = getWidenedLiteralLikeTypeForContextualReturnTypeIfNeeded(returnType, contextualType, isAsync); + } + } + if (yieldType) + yieldType = getWidenedType(yieldType); + if (returnType) + returnType = getWidenedType(returnType); + if (nextType) + nextType = getWidenedType(nextType); + } + if (isGenerator) { + return createGeneratorReturnType(yieldType || neverType, returnType || fallbackReturnType, nextType || getContextualIterationType(2 /* Next */, func) || unknownType, isAsync); + } + else { + // From within an async function you can return either a non-promise value or a promise. Any + // Promise/A+ compatible implementation will always assimilate any foreign promise, so the + // return type of the body is awaited type of the body, wrapped in a native Promise type. + return isAsync + ? createPromiseType(returnType || fallbackReturnType) + : returnType || fallbackReturnType; + } + } + function createGeneratorReturnType(yieldType, returnType, nextType, isAsyncGenerator) { + var resolver = isAsyncGenerator ? asyncIterationTypesResolver : syncIterationTypesResolver; + var globalGeneratorType = resolver.getGlobalGeneratorType(/*reportErrors*/ false); + yieldType = resolver.resolveIterationType(yieldType, /*errorNode*/ undefined) || unknownType; + returnType = resolver.resolveIterationType(returnType, /*errorNode*/ undefined) || unknownType; + nextType = resolver.resolveIterationType(nextType, /*errorNode*/ undefined) || unknownType; + if (globalGeneratorType === emptyGenericType) { + // Fall back to the global IterableIterator if returnType is assignable to the expected return iteration + // type of IterableIterator, and the expected next iteration type of IterableIterator is assignable to + // nextType. + var globalType = resolver.getGlobalIterableIteratorType(/*reportErrors*/ false); + var iterationTypes = globalType !== emptyGenericType ? getIterationTypesOfGlobalIterableType(globalType, resolver) : undefined; + var iterableIteratorReturnType = iterationTypes ? iterationTypes.returnType : anyType; + var iterableIteratorNextType = iterationTypes ? iterationTypes.nextType : undefinedType; + if (isTypeAssignableTo(returnType, iterableIteratorReturnType) && + isTypeAssignableTo(iterableIteratorNextType, nextType)) { + if (globalType !== emptyGenericType) { + return createTypeFromGenericGlobalType(globalType, [yieldType]); + } + // The global IterableIterator type doesn't exist, so report an error + resolver.getGlobalIterableIteratorType(/*reportErrors*/ true); + return emptyObjectType; + } + // The global Generator type doesn't exist, so report an error + resolver.getGlobalGeneratorType(/*reportErrors*/ true); + return emptyObjectType; + } + return createTypeFromGenericGlobalType(globalGeneratorType, [yieldType, returnType, nextType]); + } + function checkAndAggregateYieldOperandTypes(func, checkMode) { + var yieldTypes = []; + var nextTypes = []; + var isAsync = (ts.getFunctionFlags(func) & 2 /* Async */) !== 0; + ts.forEachYieldExpression(func.body, function (yieldExpression) { + var yieldExpressionType = yieldExpression.expression ? checkExpression(yieldExpression.expression, checkMode) : undefinedWideningType; + ts.pushIfUnique(yieldTypes, getYieldedTypeOfYieldExpression(yieldExpression, yieldExpressionType, anyType, isAsync)); + var nextType; + if (yieldExpression.asteriskToken) { + var iterationTypes = getIterationTypesOfIterable(yieldExpressionType, isAsync ? 19 /* AsyncYieldStar */ : 17 /* YieldStar */, yieldExpression.expression); + nextType = iterationTypes && iterationTypes.nextType; + } + else { + nextType = getContextualType(yieldExpression); + } + if (nextType) + ts.pushIfUnique(nextTypes, nextType); + }); + return { yieldTypes: yieldTypes, nextTypes: nextTypes }; + } + function getYieldedTypeOfYieldExpression(node, expressionType, sentType, isAsync) { + var errorNode = node.expression || node; + // A `yield*` expression effectively yields everything that its operand yields + var yieldedType = node.asteriskToken ? checkIteratedTypeOrElementType(isAsync ? 19 /* AsyncYieldStar */ : 17 /* YieldStar */, expressionType, sentType, errorNode) : expressionType; + return !isAsync ? yieldedType : getAwaitedType(yieldedType, errorNode, node.asteriskToken + ? ts.Diagnostics.Type_of_iterated_elements_of_a_yield_Asterisk_operand_must_either_be_a_valid_promise_or_must_not_contain_a_callable_then_member + : ts.Diagnostics.Type_of_yield_operand_in_an_async_generator_must_either_be_a_valid_promise_or_must_not_contain_a_callable_then_member); + } + /** + * Collect the TypeFacts learned from a typeof switch with + * total clauses `witnesses`, and the active clause ranging + * from `start` to `end`. Parameter `hasDefault` denotes + * whether the active clause contains a default clause. + */ + function getFactsFromTypeofSwitch(start, end, witnesses, hasDefault) { + var facts = 0 /* None */; + // When in the default we only collect inequality facts + // because default is 'in theory' a set of infinite + // equalities. + if (hasDefault) { + // Value is not equal to any types after the active clause. + for (var i = end; i < witnesses.length; i++) { + facts |= typeofNEFacts.get(witnesses[i]) || 32768 /* TypeofNEHostObject */; + } + // Remove inequalities for types that appear in the + // active clause because they appear before other + // types collected so far. + for (var i = start; i < end; i++) { + facts &= ~(typeofNEFacts.get(witnesses[i]) || 0); + } + // Add inequalities for types before the active clause unconditionally. + for (var i = 0; i < start; i++) { + facts |= typeofNEFacts.get(witnesses[i]) || 32768 /* TypeofNEHostObject */; + } + } + // When in an active clause without default the set of + // equalities is finite. + else { + // Add equalities for all types in the active clause. + for (var i = start; i < end; i++) { + facts |= typeofEQFacts.get(witnesses[i]) || 128 /* TypeofEQHostObject */; + } + // Remove equalities for types that appear before the + // active clause. + for (var i = 0; i < start; i++) { + facts &= ~(typeofEQFacts.get(witnesses[i]) || 0); + } + } + return facts; + } + function isExhaustiveSwitchStatement(node) { + var links = getNodeLinks(node); + return links.isExhaustive !== undefined ? links.isExhaustive : (links.isExhaustive = computeExhaustiveSwitchStatement(node)); + } + function computeExhaustiveSwitchStatement(node) { + if (node.expression.kind === 204 /* TypeOfExpression */) { + var operandType = getTypeOfExpression(node.expression.expression); + var witnesses = getSwitchClauseTypeOfWitnesses(node, /*retainDefault*/ false); + // notEqualFacts states that the type of the switched value is not equal to every type in the switch. + var notEqualFacts_1 = getFactsFromTypeofSwitch(0, 0, witnesses, /*hasDefault*/ true); + var type_3 = getBaseConstraintOfType(operandType) || operandType; + return !!(filterType(type_3, function (t) { return (getTypeFacts(t) & notEqualFacts_1) === notEqualFacts_1; }).flags & 131072 /* Never */); + } + var type = getTypeOfExpression(node.expression); + if (!isLiteralType(type)) { + return false; + } + var switchTypes = getSwitchClauseTypes(node); + if (!switchTypes.length || ts.some(switchTypes, isNeitherUnitTypeNorNever)) { + return false; + } + return eachTypeContainedIn(mapType(type, getRegularTypeOfLiteralType), switchTypes); + } + function functionHasImplicitReturn(func) { + return func.endFlowNode && isReachableFlowNode(func.endFlowNode); + } + /** NOTE: Return value of `[]` means a different thing than `undefined`. `[]` means func returns `void`, `undefined` means it returns `never`. */ + function checkAndAggregateReturnExpressionTypes(func, checkMode) { + var functionFlags = ts.getFunctionFlags(func); + var aggregatedTypes = []; + var hasReturnWithNoExpression = functionHasImplicitReturn(func); + var hasReturnOfTypeNever = false; + ts.forEachReturnStatement(func.body, function (returnStatement) { + var expr = returnStatement.expression; + if (expr) { + var type = checkExpressionCached(expr, checkMode && checkMode & ~8 /* SkipGenericFunctions */); + if (functionFlags & 2 /* Async */) { + // From within an async function you can return either a non-promise value or a promise. Any + // Promise/A+ compatible implementation will always assimilate any foreign promise, so the + // return type of the body should be unwrapped to its awaited type, which should be wrapped in + // the native Promise type by the caller. + type = checkAwaitedType(type, func, ts.Diagnostics.The_return_type_of_an_async_function_must_either_be_a_valid_promise_or_must_not_contain_a_callable_then_member); + } + if (type.flags & 131072 /* Never */) { + hasReturnOfTypeNever = true; + } + ts.pushIfUnique(aggregatedTypes, type); + } + else { + hasReturnWithNoExpression = true; + } + }); + if (aggregatedTypes.length === 0 && !hasReturnWithNoExpression && (hasReturnOfTypeNever || mayReturnNever(func))) { + return undefined; + } + if (strictNullChecks && aggregatedTypes.length && hasReturnWithNoExpression && + !(isJSConstructor(func) && aggregatedTypes.some(function (t) { return t.symbol === func.symbol; }))) { + // Javascript "callable constructors", containing eg `if (!(this instanceof A)) return new A()` should not add undefined + ts.pushIfUnique(aggregatedTypes, undefinedType); + } + return aggregatedTypes; + } + function mayReturnNever(func) { + switch (func.kind) { + case 201 /* FunctionExpression */: + case 202 /* ArrowFunction */: + return true; + case 161 /* MethodDeclaration */: + return func.parent.kind === 193 /* ObjectLiteralExpression */; + default: + return false; + } + } + /** + * TypeScript Specification 1.0 (6.3) - July 2014 + * An explicitly typed function whose return type isn't the Void type, + * the Any type, or a union type containing the Void or Any type as a constituent + * must have at least one return statement somewhere in its body. + * An exception to this rule is if the function implementation consists of a single 'throw' statement. + * + * @param returnType - return type of the function, can be undefined if return type is not explicitly specified + */ + function checkAllCodePathsInNonVoidFunctionReturnOrThrow(func, returnType) { + if (!produceDiagnostics) { + return; + } + var functionFlags = ts.getFunctionFlags(func); + var type = returnType && unwrapReturnType(returnType, functionFlags); + // Functions with with an explicitly specified 'void' or 'any' return type don't need any return expressions. + if (type && maybeTypeOfKind(type, 1 /* Any */ | 16384 /* Void */)) { + return; + } + // If all we have is a function signature, or an arrow function with an expression body, then there is nothing to check. + // also if HasImplicitReturn flag is not set this means that all codepaths in function body end with return or throw + if (func.kind === 160 /* MethodSignature */ || ts.nodeIsMissing(func.body) || func.body.kind !== 223 /* Block */ || !functionHasImplicitReturn(func)) { + return; + } + var hasExplicitReturn = func.flags & 512 /* HasExplicitReturn */; + if (type && type.flags & 131072 /* Never */) { + error(ts.getEffectiveReturnTypeNode(func), ts.Diagnostics.A_function_returning_never_cannot_have_a_reachable_end_point); + } + else if (type && !hasExplicitReturn) { + // minimal check: function has syntactic return type annotation and no explicit return statements in the body + // this function does not conform to the specification. + // NOTE: having returnType !== undefined is a precondition for entering this branch so func.type will always be present + error(ts.getEffectiveReturnTypeNode(func), ts.Diagnostics.A_function_whose_declared_type_is_neither_void_nor_any_must_return_a_value); + } + else if (type && strictNullChecks && !isTypeAssignableTo(undefinedType, type)) { + error(ts.getEffectiveReturnTypeNode(func) || func, ts.Diagnostics.Function_lacks_ending_return_statement_and_return_type_does_not_include_undefined); + } + else if (compilerOptions.noImplicitReturns) { + if (!type) { + // If return type annotation is omitted check if function has any explicit return statements. + // If it does not have any - its inferred return type is void - don't do any checks. + // Otherwise get inferred return type from function body and report error only if it is not void / anytype + if (!hasExplicitReturn) { + return; + } + var inferredReturnType = getReturnTypeOfSignature(getSignatureFromDeclaration(func)); + if (isUnwrappedReturnTypeVoidOrAny(func, inferredReturnType)) { + return; + } + } + error(ts.getEffectiveReturnTypeNode(func) || func, ts.Diagnostics.Not_all_code_paths_return_a_value); + } + } + function checkFunctionExpressionOrObjectLiteralMethod(node, checkMode) { + ts.Debug.assert(node.kind !== 161 /* MethodDeclaration */ || ts.isObjectLiteralMethod(node)); + checkNodeDeferred(node); + // The identityMapper object is used to indicate that function expressions are wildcards + if (checkMode && checkMode & 4 /* SkipContextSensitive */ && isContextSensitive(node)) { + // Skip parameters, return signature with return type that retains noncontextual parts so inferences can still be drawn in an early stage + if (!ts.getEffectiveReturnTypeNode(node) && !hasContextSensitiveParameters(node)) { + // Return plain anyFunctionType if there is no possibility we'll make inferences from the return type + var contextualSignature = getContextualSignature(node); + if (contextualSignature && couldContainTypeVariables(getReturnTypeOfSignature(contextualSignature))) { + var links = getNodeLinks(node); + if (links.contextFreeType) { + return links.contextFreeType; + } + var returnType = getReturnTypeFromBody(node, checkMode); + var returnOnlySignature = createSignature(undefined, undefined, undefined, ts.emptyArray, returnType, /*resolvedTypePredicate*/ undefined, 0, 0 /* None */); + var returnOnlyType = createAnonymousType(node.symbol, emptySymbols, [returnOnlySignature], ts.emptyArray, undefined, undefined); + returnOnlyType.objectFlags |= 2097152 /* NonInferrableType */; + return links.contextFreeType = returnOnlyType; + } + } + return anyFunctionType; + } + // Grammar checking + var hasGrammarError = checkGrammarFunctionLikeDeclaration(node); + if (!hasGrammarError && node.kind === 201 /* FunctionExpression */) { + checkGrammarForGenerator(node); + } + contextuallyCheckFunctionExpressionOrObjectLiteralMethod(node, checkMode); + return getTypeOfSymbol(getSymbolOfNode(node)); + } + function contextuallyCheckFunctionExpressionOrObjectLiteralMethod(node, checkMode) { + var links = getNodeLinks(node); + // Check if function expression is contextually typed and assign parameter types if so. + if (!(links.flags & 1024 /* ContextChecked */)) { + var contextualSignature = getContextualSignature(node); + // If a type check is started at a function expression that is an argument of a function call, obtaining the + // contextual type may recursively get back to here during overload resolution of the call. If so, we will have + // already assigned contextual types. + if (!(links.flags & 1024 /* ContextChecked */)) { + links.flags |= 1024 /* ContextChecked */; + var signature = ts.firstOrUndefined(getSignaturesOfType(getTypeOfSymbol(getSymbolOfNode(node)), 0 /* Call */)); + if (!signature) { + return; + } + if (isContextSensitive(node)) { + if (contextualSignature) { + var inferenceContext = getInferenceContext(node); + if (checkMode && checkMode & 2 /* Inferential */) { + inferFromAnnotatedParameters(signature, contextualSignature, inferenceContext); + } + var instantiatedContextualSignature = inferenceContext ? + instantiateSignature(contextualSignature, inferenceContext.mapper) : contextualSignature; + assignContextualParameterTypes(signature, instantiatedContextualSignature); + } + else { + // Force resolution of all parameter types such that the absence of a contextual type is consistently reflected. + assignNonContextualParameterTypes(signature); + } + } + if (contextualSignature && !getReturnTypeFromAnnotation(node) && !signature.resolvedReturnType) { + var returnType = getReturnTypeFromBody(node, checkMode); + if (!signature.resolvedReturnType) { + signature.resolvedReturnType = returnType; + } + } + checkSignatureDeclaration(node); + } + } + } + function checkFunctionExpressionOrObjectLiteralMethodDeferred(node) { + ts.Debug.assert(node.kind !== 161 /* MethodDeclaration */ || ts.isObjectLiteralMethod(node)); + var functionFlags = ts.getFunctionFlags(node); + var returnType = getReturnTypeFromAnnotation(node); + checkAllCodePathsInNonVoidFunctionReturnOrThrow(node, returnType); + if (node.body) { + if (!ts.getEffectiveReturnTypeNode(node)) { + // There are some checks that are only performed in getReturnTypeFromBody, that may produce errors + // we need. An example is the noImplicitAny errors resulting from widening the return expression + // of a function. Because checking of function expression bodies is deferred, there was never an + // appropriate time to do this during the main walk of the file (see the comment at the top of + // checkFunctionExpressionBodies). So it must be done now. + getReturnTypeOfSignature(getSignatureFromDeclaration(node)); + } + if (node.body.kind === 223 /* Block */) { + checkSourceElement(node.body); + } + else { + // From within an async function you can return either a non-promise value or a promise. Any + // Promise/A+ compatible implementation will always assimilate any foreign promise, so we + // should not be checking assignability of a promise to the return type. Instead, we need to + // check assignability of the awaited type of the expression body against the promised type of + // its return type annotation. + var exprType = checkExpression(node.body); + var returnOrPromisedType = returnType && unwrapReturnType(returnType, functionFlags); + if (returnOrPromisedType) { + if ((functionFlags & 3 /* AsyncGenerator */) === 2 /* Async */) { // Async function + var awaitedType = checkAwaitedType(exprType, node.body, ts.Diagnostics.The_return_type_of_an_async_function_must_either_be_a_valid_promise_or_must_not_contain_a_callable_then_member); + checkTypeAssignableToAndOptionallyElaborate(awaitedType, returnOrPromisedType, node.body, node.body); + } + else { // Normal function + checkTypeAssignableToAndOptionallyElaborate(exprType, returnOrPromisedType, node.body, node.body); + } + } + } + } + } + function checkArithmeticOperandType(operand, type, diagnostic, isAwaitValid) { + if (isAwaitValid === void 0) { isAwaitValid = false; } + if (!isTypeAssignableTo(type, numberOrBigIntType)) { + var awaitedType = isAwaitValid && getAwaitedTypeOfPromise(type); + errorAndMaybeSuggestAwait(operand, !!awaitedType && isTypeAssignableTo(awaitedType, numberOrBigIntType), diagnostic); + return false; + } + return true; + } + function isReadonlyAssignmentDeclaration(d) { + if (!ts.isCallExpression(d)) { + return false; + } + if (!ts.isBindableObjectDefinePropertyCall(d)) { + return false; + } + var objectLitType = checkExpressionCached(d.arguments[2]); + var valueType = getTypeOfPropertyOfType(objectLitType, "value"); + if (valueType) { + var writableProp = getPropertyOfType(objectLitType, "writable"); + var writableType = writableProp && getTypeOfSymbol(writableProp); + if (!writableType || writableType === falseType || writableType === regularFalseType) { + return true; + } + // We include this definition whereupon we walk back and check the type at the declaration because + // The usual definition of `Object.defineProperty` will _not_ cause literal types to be preserved in the + // argument types, should the type be contextualized by the call itself. + if (writableProp && writableProp.valueDeclaration && ts.isPropertyAssignment(writableProp.valueDeclaration)) { + var initializer = writableProp.valueDeclaration.initializer; + var rawOriginalType = checkExpression(initializer); + if (rawOriginalType === falseType || rawOriginalType === regularFalseType) { + return true; + } + } + return false; + } + var setProp = getPropertyOfType(objectLitType, "set"); + return !setProp; + } + function isReadonlySymbol(symbol) { + // The following symbols are considered read-only: + // Properties with a 'readonly' modifier + // Variables declared with 'const' + // Get accessors without matching set accessors + // Enum members + // Object.defineProperty assignments with writable false or no setter + // Unions and intersections of the above (unions and intersections eagerly set isReadonly on creation) + return !!(ts.getCheckFlags(symbol) & 8 /* Readonly */ || + symbol.flags & 4 /* Property */ && ts.getDeclarationModifierFlagsFromSymbol(symbol) & 64 /* Readonly */ || + symbol.flags & 3 /* Variable */ && getDeclarationNodeFlagsFromSymbol(symbol) & 2 /* Const */ || + symbol.flags & 98304 /* Accessor */ && !(symbol.flags & 65536 /* SetAccessor */) || + symbol.flags & 8 /* EnumMember */ || + ts.some(symbol.declarations, isReadonlyAssignmentDeclaration)); + } + function isAssignmentToReadonlyEntity(expr, symbol, assignmentKind) { + var _a, _b; + if (assignmentKind === 0 /* None */) { + // no assigment means it doesn't matter whether the entity is readonly + return false; + } + if (isReadonlySymbol(symbol)) { + // Allow assignments to readonly properties within constructors of the same class declaration. + if (symbol.flags & 4 /* Property */ && + ts.isAccessExpression(expr) && + expr.expression.kind === 104 /* ThisKeyword */) { + // Look for if this is the constructor for the class that `symbol` is a property of. + var ctor = ts.getContainingFunction(expr); + if (!(ctor && ctor.kind === 162 /* Constructor */)) { + return true; + } + if (symbol.valueDeclaration) { + var isAssignmentDeclaration_1 = ts.isBinaryExpression(symbol.valueDeclaration); + var isLocalPropertyDeclaration = ctor.parent === symbol.valueDeclaration.parent; + var isLocalParameterProperty = ctor === symbol.valueDeclaration.parent; + var isLocalThisPropertyAssignment = isAssignmentDeclaration_1 && ((_a = symbol.parent) === null || _a === void 0 ? void 0 : _a.valueDeclaration) === ctor.parent; + var isLocalThisPropertyAssignmentConstructorFunction = isAssignmentDeclaration_1 && ((_b = symbol.parent) === null || _b === void 0 ? void 0 : _b.valueDeclaration) === ctor; + var isWriteableSymbol = isLocalPropertyDeclaration + || isLocalParameterProperty + || isLocalThisPropertyAssignment + || isLocalThisPropertyAssignmentConstructorFunction; + return !isWriteableSymbol; + } + } + return true; + } + if (ts.isAccessExpression(expr)) { + // references through namespace import should be readonly + var node = ts.skipParentheses(expr.expression); + if (node.kind === 75 /* Identifier */) { + var symbol_2 = getNodeLinks(node).resolvedSymbol; + if (symbol_2.flags & 2097152 /* Alias */) { + var declaration = getDeclarationOfAliasSymbol(symbol_2); + return !!declaration && declaration.kind === 256 /* NamespaceImport */; + } + } + } + return false; + } + function checkReferenceExpression(expr, invalidReferenceMessage, invalidOptionalChainMessage) { + // References are combinations of identifiers, parentheses, and property accesses. + var node = ts.skipOuterExpressions(expr, 6 /* Assertions */ | 1 /* Parentheses */); + if (node.kind !== 75 /* Identifier */ && !ts.isAccessExpression(node)) { + error(expr, invalidReferenceMessage); + return false; + } + if (node.flags & 32 /* OptionalChain */) { + error(expr, invalidOptionalChainMessage); + return false; + } + return true; + } + function checkDeleteExpression(node) { + checkExpression(node.expression); + var expr = ts.skipParentheses(node.expression); + if (!ts.isAccessExpression(expr)) { + error(expr, ts.Diagnostics.The_operand_of_a_delete_operator_must_be_a_property_reference); + return booleanType; + } + // eslint-disable-next-line + if (expr.kind === 194 /* PropertyAccessExpression */ && ts.isPrivateIdentifier(expr.name)) { + error(expr, ts.Diagnostics.The_operand_of_a_delete_operator_cannot_be_a_private_identifier); + } + var links = getNodeLinks(expr); + var symbol = getExportSymbolOfValueSymbolIfExported(links.resolvedSymbol); + if (symbol && isReadonlySymbol(symbol)) { + error(expr, ts.Diagnostics.The_operand_of_a_delete_operator_cannot_be_a_read_only_property); + } + return booleanType; + } + function checkTypeOfExpression(node) { + checkExpression(node.expression); + return typeofType; + } + function checkVoidExpression(node) { + checkExpression(node.expression); + return undefinedWideningType; + } + function isTopLevelAwait(node) { + var container = ts.getThisContainer(node, /*includeArrowFunctions*/ true); + return ts.isSourceFile(container); + } + function checkAwaitExpression(node) { + // Grammar checking + if (produceDiagnostics) { + if (!(node.flags & 32768 /* AwaitContext */)) { + if (isTopLevelAwait(node)) { + var sourceFile = ts.getSourceFileOfNode(node); + if (!hasParseDiagnostics(sourceFile)) { + var span = void 0; + if (!ts.isEffectiveExternalModule(sourceFile, compilerOptions)) { + if (!span) + span = ts.getSpanOfTokenAtPosition(sourceFile, node.pos); + var diagnostic = ts.createFileDiagnostic(sourceFile, span.start, span.length, ts.Diagnostics.await_expressions_are_only_allowed_at_the_top_level_of_a_file_when_that_file_is_a_module_but_this_file_has_no_imports_or_exports_Consider_adding_an_empty_export_to_make_this_file_a_module); + diagnostics.add(diagnostic); + } + if ((moduleKind !== ts.ModuleKind.ESNext && moduleKind !== ts.ModuleKind.System) || languageVersion < 4 /* ES2017 */) { + span = ts.getSpanOfTokenAtPosition(sourceFile, node.pos); + var diagnostic = ts.createFileDiagnostic(sourceFile, span.start, span.length, ts.Diagnostics.Top_level_await_expressions_are_only_allowed_when_the_module_option_is_set_to_esnext_or_system_and_the_target_option_is_set_to_es2017_or_higher); + diagnostics.add(diagnostic); + } + } + } + else { + // use of 'await' in non-async function + var sourceFile = ts.getSourceFileOfNode(node); + if (!hasParseDiagnostics(sourceFile)) { + var span = ts.getSpanOfTokenAtPosition(sourceFile, node.pos); + var diagnostic = ts.createFileDiagnostic(sourceFile, span.start, span.length, ts.Diagnostics.await_expressions_are_only_allowed_within_async_functions_and_at_the_top_levels_of_modules); + var func = ts.getContainingFunction(node); + if (func && func.kind !== 162 /* Constructor */ && (ts.getFunctionFlags(func) & 2 /* Async */) === 0) { + var relatedInfo = ts.createDiagnosticForNode(func, ts.Diagnostics.Did_you_mean_to_mark_this_function_as_async); + ts.addRelatedInfo(diagnostic, relatedInfo); + } + diagnostics.add(diagnostic); + } + } + } + if (isInParameterInitializerBeforeContainingFunction(node)) { + error(node, ts.Diagnostics.await_expressions_cannot_be_used_in_a_parameter_initializer); + } + } + var operandType = checkExpression(node.expression); + var awaitedType = checkAwaitedType(operandType, node, ts.Diagnostics.Type_of_await_operand_must_either_be_a_valid_promise_or_must_not_contain_a_callable_then_member); + if (awaitedType === operandType && awaitedType !== errorType && !(operandType.flags & 3 /* AnyOrUnknown */)) { + addErrorOrSuggestion(/*isError*/ false, ts.createDiagnosticForNode(node, ts.Diagnostics.await_has_no_effect_on_the_type_of_this_expression)); + } + return awaitedType; + } + function checkPrefixUnaryExpression(node) { + var operandType = checkExpression(node.operand); + if (operandType === silentNeverType) { + return silentNeverType; + } + switch (node.operand.kind) { + case 8 /* NumericLiteral */: + switch (node.operator) { + case 40 /* MinusToken */: + return getFreshTypeOfLiteralType(getLiteralType(-node.operand.text)); + case 39 /* PlusToken */: + return getFreshTypeOfLiteralType(getLiteralType(+node.operand.text)); + } + break; + case 9 /* BigIntLiteral */: + if (node.operator === 40 /* MinusToken */) { + return getFreshTypeOfLiteralType(getLiteralType({ + negative: true, + base10Value: ts.parsePseudoBigInt(node.operand.text) + })); + } + } + switch (node.operator) { + case 39 /* PlusToken */: + case 40 /* MinusToken */: + case 54 /* TildeToken */: + checkNonNullType(operandType, node.operand); + if (maybeTypeOfKind(operandType, 12288 /* ESSymbolLike */)) { + error(node.operand, ts.Diagnostics.The_0_operator_cannot_be_applied_to_type_symbol, ts.tokenToString(node.operator)); + } + if (node.operator === 39 /* PlusToken */) { + if (maybeTypeOfKind(operandType, 2112 /* BigIntLike */)) { + error(node.operand, ts.Diagnostics.Operator_0_cannot_be_applied_to_type_1, ts.tokenToString(node.operator), typeToString(getBaseTypeOfLiteralType(operandType))); + } + return numberType; + } + return getUnaryResultType(operandType); + case 53 /* ExclamationToken */: + checkTruthinessExpression(node.operand); + var facts = getTypeFacts(operandType) & (4194304 /* Truthy */ | 8388608 /* Falsy */); + return facts === 4194304 /* Truthy */ ? falseType : + facts === 8388608 /* Falsy */ ? trueType : + booleanType; + case 45 /* PlusPlusToken */: + case 46 /* MinusMinusToken */: + var ok = checkArithmeticOperandType(node.operand, checkNonNullType(operandType, node.operand), ts.Diagnostics.An_arithmetic_operand_must_be_of_type_any_number_bigint_or_an_enum_type); + if (ok) { + // run check only if former checks succeeded to avoid reporting cascading errors + checkReferenceExpression(node.operand, ts.Diagnostics.The_operand_of_an_increment_or_decrement_operator_must_be_a_variable_or_a_property_access, ts.Diagnostics.The_operand_of_an_increment_or_decrement_operator_may_not_be_an_optional_property_access); + } + return getUnaryResultType(operandType); + } + return errorType; + } + function checkPostfixUnaryExpression(node) { + var operandType = checkExpression(node.operand); + if (operandType === silentNeverType) { + return silentNeverType; + } + var ok = checkArithmeticOperandType(node.operand, checkNonNullType(operandType, node.operand), ts.Diagnostics.An_arithmetic_operand_must_be_of_type_any_number_bigint_or_an_enum_type); + if (ok) { + // run check only if former checks succeeded to avoid reporting cascading errors + checkReferenceExpression(node.operand, ts.Diagnostics.The_operand_of_an_increment_or_decrement_operator_must_be_a_variable_or_a_property_access, ts.Diagnostics.The_operand_of_an_increment_or_decrement_operator_may_not_be_an_optional_property_access); + } + return getUnaryResultType(operandType); + } + function getUnaryResultType(operandType) { + if (maybeTypeOfKind(operandType, 2112 /* BigIntLike */)) { + return isTypeAssignableToKind(operandType, 3 /* AnyOrUnknown */) || maybeTypeOfKind(operandType, 296 /* NumberLike */) + ? numberOrBigIntType + : bigintType; + } + // If it's not a bigint type, implicit coercion will result in a number + return numberType; + } + // Return true if type might be of the given kind. A union or intersection type might be of a given + // kind if at least one constituent type is of the given kind. + function maybeTypeOfKind(type, kind) { + if (type.flags & kind) { + return true; + } + if (type.flags & 3145728 /* UnionOrIntersection */) { + var types = type.types; + for (var _i = 0, types_19 = types; _i < types_19.length; _i++) { + var t = types_19[_i]; + if (maybeTypeOfKind(t, kind)) { + return true; + } + } + } + return false; + } + function isTypeAssignableToKind(source, kind, strict) { + if (source.flags & kind) { + return true; + } + if (strict && source.flags & (3 /* AnyOrUnknown */ | 16384 /* Void */ | 32768 /* Undefined */ | 65536 /* Null */)) { + return false; + } + return !!(kind & 296 /* NumberLike */) && isTypeAssignableTo(source, numberType) || + !!(kind & 2112 /* BigIntLike */) && isTypeAssignableTo(source, bigintType) || + !!(kind & 132 /* StringLike */) && isTypeAssignableTo(source, stringType) || + !!(kind & 528 /* BooleanLike */) && isTypeAssignableTo(source, booleanType) || + !!(kind & 16384 /* Void */) && isTypeAssignableTo(source, voidType) || + !!(kind & 131072 /* Never */) && isTypeAssignableTo(source, neverType) || + !!(kind & 65536 /* Null */) && isTypeAssignableTo(source, nullType) || + !!(kind & 32768 /* Undefined */) && isTypeAssignableTo(source, undefinedType) || + !!(kind & 4096 /* ESSymbol */) && isTypeAssignableTo(source, esSymbolType) || + !!(kind & 67108864 /* NonPrimitive */) && isTypeAssignableTo(source, nonPrimitiveType); + } + function allTypesAssignableToKind(source, kind, strict) { + return source.flags & 1048576 /* Union */ ? + ts.every(source.types, function (subType) { return allTypesAssignableToKind(subType, kind, strict); }) : + isTypeAssignableToKind(source, kind, strict); + } + function isConstEnumObjectType(type) { + return !!(ts.getObjectFlags(type) & 16 /* Anonymous */) && !!type.symbol && isConstEnumSymbol(type.symbol); + } + function isConstEnumSymbol(symbol) { + return (symbol.flags & 128 /* ConstEnum */) !== 0; + } + function checkInstanceOfExpression(left, right, leftType, rightType) { + if (leftType === silentNeverType || rightType === silentNeverType) { + return silentNeverType; + } + // TypeScript 1.0 spec (April 2014): 4.15.4 + // The instanceof operator requires the left operand to be of type Any, an object type, or a type parameter type, + // and the right operand to be of type Any, a subtype of the 'Function' interface type, or have a call or construct signature. + // The result is always of the Boolean primitive type. + // NOTE: do not raise error if leftType is unknown as related error was already reported + if (!isTypeAny(leftType) && + allTypesAssignableToKind(leftType, 131068 /* Primitive */)) { + error(left, ts.Diagnostics.The_left_hand_side_of_an_instanceof_expression_must_be_of_type_any_an_object_type_or_a_type_parameter); + } + // NOTE: do not raise error if right is unknown as related error was already reported + if (!(isTypeAny(rightType) || typeHasCallOrConstructSignatures(rightType) || isTypeSubtypeOf(rightType, globalFunctionType))) { + error(right, ts.Diagnostics.The_right_hand_side_of_an_instanceof_expression_must_be_of_type_any_or_of_a_type_assignable_to_the_Function_interface_type); + } + return booleanType; + } + function checkInExpression(left, right, leftType, rightType) { + if (leftType === silentNeverType || rightType === silentNeverType) { + return silentNeverType; + } + leftType = checkNonNullType(leftType, left); + rightType = checkNonNullType(rightType, right); + // TypeScript 1.0 spec (April 2014): 4.15.5 + // The in operator requires the left operand to be of type Any, the String primitive type, or the Number primitive type, + // and the right operand to be of type Any, an object type, or a type parameter type. + // The result is always of the Boolean primitive type. + if (!(isTypeComparableTo(leftType, stringType) || isTypeAssignableToKind(leftType, 296 /* NumberLike */ | 12288 /* ESSymbolLike */))) { + error(left, ts.Diagnostics.The_left_hand_side_of_an_in_expression_must_be_of_type_any_string_number_or_symbol); + } + if (!allTypesAssignableToKind(rightType, 67108864 /* NonPrimitive */ | 58982400 /* InstantiableNonPrimitive */)) { + error(right, ts.Diagnostics.The_right_hand_side_of_an_in_expression_must_be_of_type_any_an_object_type_or_a_type_parameter); + } + return booleanType; + } + function checkObjectLiteralAssignment(node, sourceType, rightIsThis) { + var properties = node.properties; + if (strictNullChecks && properties.length === 0) { + return checkNonNullType(sourceType, node); + } + for (var i = 0; i < properties.length; i++) { + checkObjectLiteralDestructuringPropertyAssignment(node, sourceType, i, properties, rightIsThis); + } + return sourceType; + } + /** Note: If property cannot be a SpreadAssignment, then allProperties does not need to be provided */ + function checkObjectLiteralDestructuringPropertyAssignment(node, objectLiteralType, propertyIndex, allProperties, rightIsThis) { + if (rightIsThis === void 0) { rightIsThis = false; } + var properties = node.properties; + var property = properties[propertyIndex]; + if (property.kind === 281 /* PropertyAssignment */ || property.kind === 282 /* ShorthandPropertyAssignment */) { + var name = property.name; + var exprType = getLiteralTypeFromPropertyName(name); + if (isTypeUsableAsPropertyName(exprType)) { + var text = getPropertyNameFromType(exprType); + var prop = getPropertyOfType(objectLiteralType, text); + if (prop) { + markPropertyAsReferenced(prop, property, rightIsThis); + checkPropertyAccessibility(property, /*isSuper*/ false, objectLiteralType, prop); + } + } + var elementType = getIndexedAccessType(objectLiteralType, exprType, name); + var type = getFlowTypeOfDestructuring(property, elementType); + return checkDestructuringAssignment(property.kind === 282 /* ShorthandPropertyAssignment */ ? property : property.initializer, type); + } + else if (property.kind === 283 /* SpreadAssignment */) { + if (propertyIndex < properties.length - 1) { + error(property, ts.Diagnostics.A_rest_element_must_be_last_in_a_destructuring_pattern); + } + else { + if (languageVersion < 99 /* ESNext */) { + checkExternalEmitHelpers(property, 4 /* Rest */); + } + var nonRestNames = []; + if (allProperties) { + for (var _i = 0, allProperties_1 = allProperties; _i < allProperties_1.length; _i++) { + var otherProperty = allProperties_1[_i]; + if (!ts.isSpreadAssignment(otherProperty)) { + nonRestNames.push(otherProperty.name); + } + } + } + var type = getRestType(objectLiteralType, nonRestNames, objectLiteralType.symbol); + checkGrammarForDisallowedTrailingComma(allProperties, ts.Diagnostics.A_rest_parameter_or_binding_pattern_may_not_have_a_trailing_comma); + return checkDestructuringAssignment(property.expression, type); + } + } + else { + error(property, ts.Diagnostics.Property_assignment_expected); + } + } + function checkArrayLiteralAssignment(node, sourceType, checkMode) { + var elements = node.elements; + if (languageVersion < 2 /* ES2015 */ && compilerOptions.downlevelIteration) { + checkExternalEmitHelpers(node, 512 /* Read */); + } + // This elementType will be used if the specific property corresponding to this index is not + // present (aka the tuple element property). This call also checks that the parentType is in + // fact an iterable or array (depending on target language). + var elementType = checkIteratedTypeOrElementType(65 /* Destructuring */, sourceType, undefinedType, node) || errorType; + for (var i = 0; i < elements.length; i++) { + checkArrayLiteralDestructuringElementAssignment(node, sourceType, i, elementType, checkMode); + } + return sourceType; + } + function checkArrayLiteralDestructuringElementAssignment(node, sourceType, elementIndex, elementType, checkMode) { + var elements = node.elements; + var element = elements[elementIndex]; + if (element.kind !== 215 /* OmittedExpression */) { + if (element.kind !== 213 /* SpreadElement */) { + var indexType = getLiteralType(elementIndex); + if (isArrayLikeType(sourceType)) { + // We create a synthetic expression so that getIndexedAccessType doesn't get confused + // when the element is a SyntaxKind.ElementAccessExpression. + var accessFlags = hasDefaultValue(element) ? 8 /* NoTupleBoundsCheck */ : 0; + var elementType_2 = getIndexedAccessTypeOrUndefined(sourceType, indexType, createSyntheticExpression(element, indexType), accessFlags) || errorType; + var assignedType = hasDefaultValue(element) ? getTypeWithFacts(elementType_2, 524288 /* NEUndefined */) : elementType_2; + var type = getFlowTypeOfDestructuring(element, assignedType); + return checkDestructuringAssignment(element, type, checkMode); + } + return checkDestructuringAssignment(element, elementType, checkMode); + } + if (elementIndex < elements.length - 1) { + error(element, ts.Diagnostics.A_rest_element_must_be_last_in_a_destructuring_pattern); + } + else { + var restExpression = element.expression; + if (restExpression.kind === 209 /* BinaryExpression */ && restExpression.operatorToken.kind === 62 /* EqualsToken */) { + error(restExpression.operatorToken, ts.Diagnostics.A_rest_element_cannot_have_an_initializer); + } + else { + checkGrammarForDisallowedTrailingComma(node.elements, ts.Diagnostics.A_rest_parameter_or_binding_pattern_may_not_have_a_trailing_comma); + var type = everyType(sourceType, isTupleType) ? + mapType(sourceType, function (t) { return sliceTupleType(t, elementIndex); }) : + createArrayType(elementType); + return checkDestructuringAssignment(restExpression, type, checkMode); + } + } + } + return undefined; + } + function checkDestructuringAssignment(exprOrAssignment, sourceType, checkMode, rightIsThis) { + var target; + if (exprOrAssignment.kind === 282 /* ShorthandPropertyAssignment */) { + var prop = exprOrAssignment; + if (prop.objectAssignmentInitializer) { + // In strict null checking mode, if a default value of a non-undefined type is specified, remove + // undefined from the final type. + if (strictNullChecks && + !(getFalsyFlags(checkExpression(prop.objectAssignmentInitializer)) & 32768 /* Undefined */)) { + sourceType = getTypeWithFacts(sourceType, 524288 /* NEUndefined */); + } + checkBinaryLikeExpression(prop.name, prop.equalsToken, prop.objectAssignmentInitializer, checkMode); + } + target = exprOrAssignment.name; + } + else { + target = exprOrAssignment; + } + if (target.kind === 209 /* BinaryExpression */ && target.operatorToken.kind === 62 /* EqualsToken */) { + checkBinaryExpression(target, checkMode); + target = target.left; + } + if (target.kind === 193 /* ObjectLiteralExpression */) { + return checkObjectLiteralAssignment(target, sourceType, rightIsThis); + } + if (target.kind === 192 /* ArrayLiteralExpression */) { + return checkArrayLiteralAssignment(target, sourceType, checkMode); + } + return checkReferenceAssignment(target, sourceType, checkMode); + } + function checkReferenceAssignment(target, sourceType, checkMode) { + var targetType = checkExpression(target, checkMode); + var error = target.parent.kind === 283 /* SpreadAssignment */ ? + ts.Diagnostics.The_target_of_an_object_rest_assignment_must_be_a_variable_or_a_property_access : + ts.Diagnostics.The_left_hand_side_of_an_assignment_expression_must_be_a_variable_or_a_property_access; + var optionalError = target.parent.kind === 283 /* SpreadAssignment */ ? + ts.Diagnostics.The_target_of_an_object_rest_assignment_may_not_be_an_optional_property_access : + ts.Diagnostics.The_left_hand_side_of_an_assignment_expression_may_not_be_an_optional_property_access; + if (checkReferenceExpression(target, error, optionalError)) { + checkTypeAssignableToAndOptionallyElaborate(sourceType, targetType, target, target); + } + if (ts.isPrivateIdentifierPropertyAccessExpression(target)) { + checkExternalEmitHelpers(target.parent, 524288 /* ClassPrivateFieldSet */); + } + return sourceType; + } + /** + * This is a *shallow* check: An expression is side-effect-free if the + * evaluation of the expression *itself* cannot produce side effects. + * For example, x++ / 3 is side-effect free because the / operator + * does not have side effects. + * The intent is to "smell test" an expression for correctness in positions where + * its value is discarded (e.g. the left side of the comma operator). + */ + function isSideEffectFree(node) { + node = ts.skipParentheses(node); + switch (node.kind) { + case 75 /* Identifier */: + case 10 /* StringLiteral */: + case 13 /* RegularExpressionLiteral */: + case 198 /* TaggedTemplateExpression */: + case 211 /* TemplateExpression */: + case 14 /* NoSubstitutionTemplateLiteral */: + case 8 /* NumericLiteral */: + case 9 /* BigIntLiteral */: + case 106 /* TrueKeyword */: + case 91 /* FalseKeyword */: + case 100 /* NullKeyword */: + case 146 /* UndefinedKeyword */: + case 201 /* FunctionExpression */: + case 214 /* ClassExpression */: + case 202 /* ArrowFunction */: + case 192 /* ArrayLiteralExpression */: + case 193 /* ObjectLiteralExpression */: + case 204 /* TypeOfExpression */: + case 218 /* NonNullExpression */: + case 267 /* JsxSelfClosingElement */: + case 266 /* JsxElement */: + return true; + case 210 /* ConditionalExpression */: + return isSideEffectFree(node.whenTrue) && + isSideEffectFree(node.whenFalse); + case 209 /* BinaryExpression */: + if (ts.isAssignmentOperator(node.operatorToken.kind)) { + return false; + } + return isSideEffectFree(node.left) && + isSideEffectFree(node.right); + case 207 /* PrefixUnaryExpression */: + case 208 /* PostfixUnaryExpression */: + // Unary operators ~, !, +, and - have no side effects. + // The rest do. + switch (node.operator) { + case 53 /* ExclamationToken */: + case 39 /* PlusToken */: + case 40 /* MinusToken */: + case 54 /* TildeToken */: + return true; + } + return false; + // Some forms listed here for clarity + case 205 /* VoidExpression */: // Explicit opt-out + case 199 /* TypeAssertionExpression */: // Not SEF, but can produce useful type warnings + case 217 /* AsExpression */: // Not SEF, but can produce useful type warnings + default: + return false; + } + } + function isTypeEqualityComparableTo(source, target) { + return (target.flags & 98304 /* Nullable */) !== 0 || isTypeComparableTo(source, target); + } + var CheckBinaryExpressionState; + (function (CheckBinaryExpressionState) { + CheckBinaryExpressionState[CheckBinaryExpressionState["MaybeCheckLeft"] = 0] = "MaybeCheckLeft"; + CheckBinaryExpressionState[CheckBinaryExpressionState["CheckRight"] = 1] = "CheckRight"; + CheckBinaryExpressionState[CheckBinaryExpressionState["FinishCheck"] = 2] = "FinishCheck"; + })(CheckBinaryExpressionState || (CheckBinaryExpressionState = {})); + function checkBinaryExpression(node, checkMode) { + var workStacks = { + expr: [node], + state: [0 /* MaybeCheckLeft */], + leftType: [undefined] + }; + var stackIndex = 0; + var lastResult; + while (stackIndex >= 0) { + node = workStacks.expr[stackIndex]; + switch (workStacks.state[stackIndex]) { + case 0 /* MaybeCheckLeft */: { + if (ts.isInJSFile(node) && ts.getAssignedExpandoInitializer(node)) { + finishInvocation(checkExpression(node.right, checkMode)); + break; + } + checkGrammarNullishCoalesceWithLogicalExpression(node); + var operator = node.operatorToken.kind; + if (operator === 62 /* EqualsToken */ && (node.left.kind === 193 /* ObjectLiteralExpression */ || node.left.kind === 192 /* ArrayLiteralExpression */)) { + finishInvocation(checkDestructuringAssignment(node.left, checkExpression(node.right, checkMode), checkMode, node.right.kind === 104 /* ThisKeyword */)); + break; + } + advanceState(1 /* CheckRight */); + maybeCheckExpression(node.left); + break; + } + case 1 /* CheckRight */: { + var leftType = lastResult; + workStacks.leftType[stackIndex] = leftType; + var operator = node.operatorToken.kind; + if (operator === 55 /* AmpersandAmpersandToken */ || operator === 56 /* BarBarToken */ || operator === 60 /* QuestionQuestionToken */) { + checkTruthinessOfType(leftType, node.left); + } + advanceState(2 /* FinishCheck */); + maybeCheckExpression(node.right); + break; + } + case 2 /* FinishCheck */: { + var leftType = workStacks.leftType[stackIndex]; + var rightType = lastResult; + finishInvocation(checkBinaryLikeExpressionWorker(node.left, node.operatorToken, node.right, leftType, rightType, node)); + break; + } + default: return ts.Debug.fail("Invalid state " + workStacks.state[stackIndex] + " for checkBinaryExpression"); + } + } + return lastResult; + function finishInvocation(result) { + lastResult = result; + stackIndex--; + } + /** + * Note that `advanceState` sets the _current_ head state, and that `maybeCheckExpression` potentially pushes on a new + * head state; so `advanceState` must be called before any `maybeCheckExpression` during a state's execution. + */ + function advanceState(nextState) { + workStacks.state[stackIndex] = nextState; + } + function maybeCheckExpression(node) { + if (ts.isBinaryExpression(node)) { + stackIndex++; + workStacks.expr[stackIndex] = node; + workStacks.state[stackIndex] = 0 /* MaybeCheckLeft */; + workStacks.leftType[stackIndex] = undefined; + } + else { + lastResult = checkExpression(node, checkMode); + } + } + } + function checkGrammarNullishCoalesceWithLogicalExpression(node) { + var left = node.left, operatorToken = node.operatorToken, right = node.right; + if (operatorToken.kind === 60 /* QuestionQuestionToken */) { + if (ts.isBinaryExpression(left) && (left.operatorToken.kind === 56 /* BarBarToken */ || left.operatorToken.kind === 55 /* AmpersandAmpersandToken */)) { + grammarErrorOnNode(left, ts.Diagnostics._0_and_1_operations_cannot_be_mixed_without_parentheses, ts.tokenToString(left.operatorToken.kind), ts.tokenToString(operatorToken.kind)); + } + if (ts.isBinaryExpression(right) && (right.operatorToken.kind === 56 /* BarBarToken */ || right.operatorToken.kind === 55 /* AmpersandAmpersandToken */)) { + grammarErrorOnNode(right, ts.Diagnostics._0_and_1_operations_cannot_be_mixed_without_parentheses, ts.tokenToString(right.operatorToken.kind), ts.tokenToString(operatorToken.kind)); + } + } + } + // Note that this and `checkBinaryExpression` above should behave mostly the same, except this elides some + // expression-wide checks and does not use a work stack to fold nested binary expressions into the same callstack frame + function checkBinaryLikeExpression(left, operatorToken, right, checkMode, errorNode) { + var operator = operatorToken.kind; + if (operator === 62 /* EqualsToken */ && (left.kind === 193 /* ObjectLiteralExpression */ || left.kind === 192 /* ArrayLiteralExpression */)) { + return checkDestructuringAssignment(left, checkExpression(right, checkMode), checkMode, right.kind === 104 /* ThisKeyword */); + } + var leftType; + if (operator === 55 /* AmpersandAmpersandToken */ || operator === 56 /* BarBarToken */ || operator === 60 /* QuestionQuestionToken */) { + leftType = checkTruthinessExpression(left, checkMode); + } + else { + leftType = checkExpression(left, checkMode); + } + var rightType = checkExpression(right, checkMode); + return checkBinaryLikeExpressionWorker(left, operatorToken, right, leftType, rightType, errorNode); + } + function checkBinaryLikeExpressionWorker(left, operatorToken, right, leftType, rightType, errorNode) { + var operator = operatorToken.kind; + switch (operator) { + case 41 /* AsteriskToken */: + case 42 /* AsteriskAsteriskToken */: + case 65 /* AsteriskEqualsToken */: + case 66 /* AsteriskAsteriskEqualsToken */: + case 43 /* SlashToken */: + case 67 /* SlashEqualsToken */: + case 44 /* PercentToken */: + case 68 /* PercentEqualsToken */: + case 40 /* MinusToken */: + case 64 /* MinusEqualsToken */: + case 47 /* LessThanLessThanToken */: + case 69 /* LessThanLessThanEqualsToken */: + case 48 /* GreaterThanGreaterThanToken */: + case 70 /* GreaterThanGreaterThanEqualsToken */: + case 49 /* GreaterThanGreaterThanGreaterThanToken */: + case 71 /* GreaterThanGreaterThanGreaterThanEqualsToken */: + case 51 /* BarToken */: + case 73 /* BarEqualsToken */: + case 52 /* CaretToken */: + case 74 /* CaretEqualsToken */: + case 50 /* AmpersandToken */: + case 72 /* AmpersandEqualsToken */: + if (leftType === silentNeverType || rightType === silentNeverType) { + return silentNeverType; + } + leftType = checkNonNullType(leftType, left); + rightType = checkNonNullType(rightType, right); + var suggestedOperator = void 0; + // if a user tries to apply a bitwise operator to 2 boolean operands + // try and return them a helpful suggestion + if ((leftType.flags & 528 /* BooleanLike */) && + (rightType.flags & 528 /* BooleanLike */) && + (suggestedOperator = getSuggestedBooleanOperator(operatorToken.kind)) !== undefined) { + error(errorNode || operatorToken, ts.Diagnostics.The_0_operator_is_not_allowed_for_boolean_types_Consider_using_1_instead, ts.tokenToString(operatorToken.kind), ts.tokenToString(suggestedOperator)); + return numberType; + } + else { + // otherwise just check each operand separately and report errors as normal + var leftOk = checkArithmeticOperandType(left, leftType, ts.Diagnostics.The_left_hand_side_of_an_arithmetic_operation_must_be_of_type_any_number_bigint_or_an_enum_type, /*isAwaitValid*/ true); + var rightOk = checkArithmeticOperandType(right, rightType, ts.Diagnostics.The_right_hand_side_of_an_arithmetic_operation_must_be_of_type_any_number_bigint_or_an_enum_type, /*isAwaitValid*/ true); + var resultType_1; + // If both are any or unknown, allow operation; assume it will resolve to number + if ((isTypeAssignableToKind(leftType, 3 /* AnyOrUnknown */) && isTypeAssignableToKind(rightType, 3 /* AnyOrUnknown */)) || + // Or, if neither could be bigint, implicit coercion results in a number result + !(maybeTypeOfKind(leftType, 2112 /* BigIntLike */) || maybeTypeOfKind(rightType, 2112 /* BigIntLike */))) { + resultType_1 = numberType; + } + // At least one is assignable to bigint, so check that both are + else if (bothAreBigIntLike(leftType, rightType)) { + switch (operator) { + case 49 /* GreaterThanGreaterThanGreaterThanToken */: + case 71 /* GreaterThanGreaterThanGreaterThanEqualsToken */: + reportOperatorError(); + } + resultType_1 = bigintType; + } + // Exactly one of leftType/rightType is assignable to bigint + else { + reportOperatorError(bothAreBigIntLike); + resultType_1 = errorType; + } + if (leftOk && rightOk) { + checkAssignmentOperator(resultType_1); + } + return resultType_1; + } + case 39 /* PlusToken */: + case 63 /* PlusEqualsToken */: + if (leftType === silentNeverType || rightType === silentNeverType) { + return silentNeverType; + } + if (!isTypeAssignableToKind(leftType, 132 /* StringLike */) && !isTypeAssignableToKind(rightType, 132 /* StringLike */)) { + leftType = checkNonNullType(leftType, left); + rightType = checkNonNullType(rightType, right); + } + var resultType = void 0; + if (isTypeAssignableToKind(leftType, 296 /* NumberLike */, /*strict*/ true) && isTypeAssignableToKind(rightType, 296 /* NumberLike */, /*strict*/ true)) { + // Operands of an enum type are treated as having the primitive type Number. + // If both operands are of the Number primitive type, the result is of the Number primitive type. + resultType = numberType; + } + else if (isTypeAssignableToKind(leftType, 2112 /* BigIntLike */, /*strict*/ true) && isTypeAssignableToKind(rightType, 2112 /* BigIntLike */, /*strict*/ true)) { + // If both operands are of the BigInt primitive type, the result is of the BigInt primitive type. + resultType = bigintType; + } + else if (isTypeAssignableToKind(leftType, 132 /* StringLike */, /*strict*/ true) || isTypeAssignableToKind(rightType, 132 /* StringLike */, /*strict*/ true)) { + // If one or both operands are of the String primitive type, the result is of the String primitive type. + resultType = stringType; + } + else if (isTypeAny(leftType) || isTypeAny(rightType)) { + // Otherwise, the result is of type Any. + // NOTE: unknown type here denotes error type. Old compiler treated this case as any type so do we. + resultType = leftType === errorType || rightType === errorType ? errorType : anyType; + } + // Symbols are not allowed at all in arithmetic expressions + if (resultType && !checkForDisallowedESSymbolOperand(operator)) { + return resultType; + } + if (!resultType) { + // Types that have a reasonably good chance of being a valid operand type. + // If both types have an awaited type of one of these, we'll assume the user + // might be missing an await without doing an exhaustive check that inserting + // await(s) will actually be a completely valid binary expression. + var closeEnoughKind_1 = 296 /* NumberLike */ | 2112 /* BigIntLike */ | 132 /* StringLike */ | 3 /* AnyOrUnknown */; + reportOperatorError(function (left, right) { + return isTypeAssignableToKind(left, closeEnoughKind_1) && + isTypeAssignableToKind(right, closeEnoughKind_1); + }); + return anyType; + } + if (operator === 63 /* PlusEqualsToken */) { + checkAssignmentOperator(resultType); + } + return resultType; + case 29 /* LessThanToken */: + case 31 /* GreaterThanToken */: + case 32 /* LessThanEqualsToken */: + case 33 /* GreaterThanEqualsToken */: + if (checkForDisallowedESSymbolOperand(operator)) { + leftType = getBaseTypeOfLiteralType(checkNonNullType(leftType, left)); + rightType = getBaseTypeOfLiteralType(checkNonNullType(rightType, right)); + reportOperatorErrorUnless(function (left, right) { + return isTypeComparableTo(left, right) || isTypeComparableTo(right, left) || (isTypeAssignableTo(left, numberOrBigIntType) && isTypeAssignableTo(right, numberOrBigIntType)); + }); + } + return booleanType; + case 34 /* EqualsEqualsToken */: + case 35 /* ExclamationEqualsToken */: + case 36 /* EqualsEqualsEqualsToken */: + case 37 /* ExclamationEqualsEqualsToken */: + reportOperatorErrorUnless(function (left, right) { return isTypeEqualityComparableTo(left, right) || isTypeEqualityComparableTo(right, left); }); + return booleanType; + case 98 /* InstanceOfKeyword */: + return checkInstanceOfExpression(left, right, leftType, rightType); + case 97 /* InKeyword */: + return checkInExpression(left, right, leftType, rightType); + case 55 /* AmpersandAmpersandToken */: + return getTypeFacts(leftType) & 4194304 /* Truthy */ ? + getUnionType([extractDefinitelyFalsyTypes(strictNullChecks ? leftType : getBaseTypeOfLiteralType(rightType)), rightType]) : + leftType; + case 56 /* BarBarToken */: + return getTypeFacts(leftType) & 8388608 /* Falsy */ ? + getUnionType([removeDefinitelyFalsyTypes(leftType), rightType], 2 /* Subtype */) : + leftType; + case 60 /* QuestionQuestionToken */: + return getTypeFacts(leftType) & 262144 /* EQUndefinedOrNull */ ? + getUnionType([getNonNullableType(leftType), rightType], 2 /* Subtype */) : + leftType; + case 62 /* EqualsToken */: + var declKind = ts.isBinaryExpression(left.parent) ? ts.getAssignmentDeclarationKind(left.parent) : 0 /* None */; + checkAssignmentDeclaration(declKind, rightType); + if (isAssignmentDeclaration(declKind)) { + if (!(rightType.flags & 524288 /* Object */) || + declKind !== 2 /* ModuleExports */ && + declKind !== 6 /* Prototype */ && + !isEmptyObjectType(rightType) && + !isFunctionObjectType(rightType) && + !(ts.getObjectFlags(rightType) & 1 /* Class */)) { + // don't check assignability of module.exports=, C.prototype=, or expando types because they will necessarily be incomplete + checkAssignmentOperator(rightType); + } + return leftType; + } + else { + checkAssignmentOperator(rightType); + return getRegularTypeOfObjectLiteral(rightType); + } + case 27 /* CommaToken */: + if (!compilerOptions.allowUnreachableCode && isSideEffectFree(left) && !isEvalNode(right)) { + error(left, ts.Diagnostics.Left_side_of_comma_operator_is_unused_and_has_no_side_effects); + } + return rightType; + default: + return ts.Debug.fail(); + } + function bothAreBigIntLike(left, right) { + return isTypeAssignableToKind(left, 2112 /* BigIntLike */) && isTypeAssignableToKind(right, 2112 /* BigIntLike */); + } + function checkAssignmentDeclaration(kind, rightType) { + if (kind === 2 /* ModuleExports */) { + for (var _i = 0, _a = getPropertiesOfObjectType(rightType); _i < _a.length; _i++) { + var prop = _a[_i]; + var propType = getTypeOfSymbol(prop); + if (propType.symbol && propType.symbol.flags & 32 /* Class */) { + var name = prop.escapedName; + var symbol = resolveName(prop.valueDeclaration, name, 788968 /* Type */, undefined, name, /*isUse*/ false); + if (symbol && symbol.declarations.some(ts.isJSDocTypedefTag)) { + addDuplicateDeclarationErrorsForSymbols(symbol, ts.Diagnostics.Duplicate_identifier_0, ts.unescapeLeadingUnderscores(name), prop); + addDuplicateDeclarationErrorsForSymbols(prop, ts.Diagnostics.Duplicate_identifier_0, ts.unescapeLeadingUnderscores(name), symbol); + } + } + } + } + } + function isEvalNode(node) { + return node.kind === 75 /* Identifier */ && node.escapedText === "eval"; + } + // Return true if there was no error, false if there was an error. + function checkForDisallowedESSymbolOperand(operator) { + var offendingSymbolOperand = maybeTypeOfKind(leftType, 12288 /* ESSymbolLike */) ? left : + maybeTypeOfKind(rightType, 12288 /* ESSymbolLike */) ? right : + undefined; + if (offendingSymbolOperand) { + error(offendingSymbolOperand, ts.Diagnostics.The_0_operator_cannot_be_applied_to_type_symbol, ts.tokenToString(operator)); + return false; + } + return true; + } + function getSuggestedBooleanOperator(operator) { + switch (operator) { + case 51 /* BarToken */: + case 73 /* BarEqualsToken */: + return 56 /* BarBarToken */; + case 52 /* CaretToken */: + case 74 /* CaretEqualsToken */: + return 37 /* ExclamationEqualsEqualsToken */; + case 50 /* AmpersandToken */: + case 72 /* AmpersandEqualsToken */: + return 55 /* AmpersandAmpersandToken */; + default: + return undefined; + } + } + function checkAssignmentOperator(valueType) { + if (produceDiagnostics && ts.isAssignmentOperator(operator)) { + // TypeScript 1.0 spec (April 2014): 4.17 + // An assignment of the form + // VarExpr = ValueExpr + // requires VarExpr to be classified as a reference + // A compound assignment furthermore requires VarExpr to be classified as a reference (section 4.1) + // and the type of the non-compound operation to be assignable to the type of VarExpr. + if (checkReferenceExpression(left, ts.Diagnostics.The_left_hand_side_of_an_assignment_expression_must_be_a_variable_or_a_property_access, ts.Diagnostics.The_left_hand_side_of_an_assignment_expression_may_not_be_an_optional_property_access) + && (!ts.isIdentifier(left) || ts.unescapeLeadingUnderscores(left.escapedText) !== "exports")) { + // to avoid cascading errors check assignability only if 'isReference' check succeeded and no errors were reported + checkTypeAssignableToAndOptionallyElaborate(valueType, leftType, left, right); + } + } + } + function isAssignmentDeclaration(kind) { + switch (kind) { + case 2 /* ModuleExports */: + return true; + case 1 /* ExportsProperty */: + case 5 /* Property */: + case 6 /* Prototype */: + case 3 /* PrototypeProperty */: + case 4 /* ThisProperty */: + var symbol = getSymbolOfNode(left); + var init = ts.getAssignedExpandoInitializer(right); + return init && ts.isObjectLiteralExpression(init) && + symbol && ts.hasEntries(symbol.exports); + default: + return false; + } + } + /** + * Returns true if an error is reported + */ + function reportOperatorErrorUnless(typesAreCompatible) { + if (!typesAreCompatible(leftType, rightType)) { + reportOperatorError(typesAreCompatible); + return true; + } + return false; + } + function reportOperatorError(isRelated) { + var _a; + var wouldWorkWithAwait = false; + var errNode = errorNode || operatorToken; + if (isRelated) { + var awaitedLeftType = getAwaitedType(leftType); + var awaitedRightType = getAwaitedType(rightType); + wouldWorkWithAwait = !(awaitedLeftType === leftType && awaitedRightType === rightType) + && !!(awaitedLeftType && awaitedRightType) + && isRelated(awaitedLeftType, awaitedRightType); + } + var effectiveLeft = leftType; + var effectiveRight = rightType; + if (!wouldWorkWithAwait && isRelated) { + _a = getBaseTypesIfUnrelated(leftType, rightType, isRelated), effectiveLeft = _a[0], effectiveRight = _a[1]; + } + var _b = getTypeNamesForErrorDisplay(effectiveLeft, effectiveRight), leftStr = _b[0], rightStr = _b[1]; + if (!tryGiveBetterPrimaryError(errNode, wouldWorkWithAwait, leftStr, rightStr)) { + errorAndMaybeSuggestAwait(errNode, wouldWorkWithAwait, ts.Diagnostics.Operator_0_cannot_be_applied_to_types_1_and_2, ts.tokenToString(operatorToken.kind), leftStr, rightStr); + } + } + function tryGiveBetterPrimaryError(errNode, maybeMissingAwait, leftStr, rightStr) { + var typeName; + switch (operatorToken.kind) { + case 36 /* EqualsEqualsEqualsToken */: + case 34 /* EqualsEqualsToken */: + typeName = "false"; + break; + case 37 /* ExclamationEqualsEqualsToken */: + case 35 /* ExclamationEqualsToken */: + typeName = "true"; + } + if (typeName) { + return errorAndMaybeSuggestAwait(errNode, maybeMissingAwait, ts.Diagnostics.This_condition_will_always_return_0_since_the_types_1_and_2_have_no_overlap, typeName, leftStr, rightStr); + } + return undefined; + } + } + function getBaseTypesIfUnrelated(leftType, rightType, isRelated) { + var effectiveLeft = leftType; + var effectiveRight = rightType; + var leftBase = getBaseTypeOfLiteralType(leftType); + var rightBase = getBaseTypeOfLiteralType(rightType); + if (!isRelated(leftBase, rightBase)) { + effectiveLeft = leftBase; + effectiveRight = rightBase; + } + return [effectiveLeft, effectiveRight]; + } + function checkYieldExpression(node) { + // Grammar checking + if (produceDiagnostics) { + if (!(node.flags & 8192 /* YieldContext */)) { + grammarErrorOnFirstToken(node, ts.Diagnostics.A_yield_expression_is_only_allowed_in_a_generator_body); + } + if (isInParameterInitializerBeforeContainingFunction(node)) { + error(node, ts.Diagnostics.yield_expressions_cannot_be_used_in_a_parameter_initializer); + } + } + var func = ts.getContainingFunction(node); + if (!func) + return anyType; + var functionFlags = ts.getFunctionFlags(func); + if (!(functionFlags & 1 /* Generator */)) { + // If the user's code is syntactically correct, the func should always have a star. After all, we are in a yield context. + return anyType; + } + var isAsync = (functionFlags & 2 /* Async */) !== 0; + if (node.asteriskToken) { + // Async generator functions prior to ESNext require the __await, __asyncDelegator, + // and __asyncValues helpers + if (isAsync && languageVersion < 99 /* ESNext */) { + checkExternalEmitHelpers(node, 53248 /* AsyncDelegatorIncludes */); + } + // Generator functions prior to ES2015 require the __values helper + if (!isAsync && languageVersion < 2 /* ES2015 */ && compilerOptions.downlevelIteration) { + checkExternalEmitHelpers(node, 256 /* Values */); + } + } + // There is no point in doing an assignability check if the function + // has no explicit return type because the return type is directly computed + // from the yield expressions. + var returnType = getReturnTypeFromAnnotation(func); + var iterationTypes = returnType && getIterationTypesOfGeneratorFunctionReturnType(returnType, isAsync); + var signatureYieldType = iterationTypes && iterationTypes.yieldType || anyType; + var signatureNextType = iterationTypes && iterationTypes.nextType || anyType; + var resolvedSignatureNextType = isAsync ? getAwaitedType(signatureNextType) || anyType : signatureNextType; + var yieldExpressionType = node.expression ? checkExpression(node.expression) : undefinedWideningType; + var yieldedType = getYieldedTypeOfYieldExpression(node, yieldExpressionType, resolvedSignatureNextType, isAsync); + if (returnType && yieldedType) { + checkTypeAssignableToAndOptionallyElaborate(yieldedType, signatureYieldType, node.expression || node, node.expression); + } + if (node.asteriskToken) { + var use = isAsync ? 19 /* AsyncYieldStar */ : 17 /* YieldStar */; + return getIterationTypeOfIterable(use, 1 /* Return */, yieldExpressionType, node.expression) + || anyType; + } + else if (returnType) { + return getIterationTypeOfGeneratorFunctionReturnType(2 /* Next */, returnType, isAsync) + || anyType; + } + return getContextualIterationType(2 /* Next */, func) || anyType; + } + function checkConditionalExpression(node, checkMode) { + var type = checkTruthinessExpression(node.condition); + checkTestingKnownTruthyCallableType(node.condition, node.whenTrue, type); + var type1 = checkExpression(node.whenTrue, checkMode); + var type2 = checkExpression(node.whenFalse, checkMode); + return getUnionType([type1, type2], 2 /* Subtype */); + } + function checkTemplateExpression(node) { + // We just want to check each expressions, but we are unconcerned with + // the type of each expression, as any value may be coerced into a string. + // It is worth asking whether this is what we really want though. + // A place where we actually *are* concerned with the expressions' types are + // in tagged templates. + ts.forEach(node.templateSpans, function (templateSpan) { + if (maybeTypeOfKind(checkExpression(templateSpan.expression), 12288 /* ESSymbolLike */)) { + error(templateSpan.expression, ts.Diagnostics.Implicit_conversion_of_a_symbol_to_a_string_will_fail_at_runtime_Consider_wrapping_this_expression_in_String); + } + }); + return stringType; + } + function getContextNode(node) { + if (node.kind === 274 /* JsxAttributes */ && !ts.isJsxSelfClosingElement(node.parent)) { + return node.parent.parent; // Needs to be the root JsxElement, so it encompasses the attributes _and_ the children (which are essentially part of the attributes) + } + return node; + } + function checkExpressionWithContextualType(node, contextualType, inferenceContext, checkMode) { + var context = getContextNode(node); + var saveContextualType = context.contextualType; + var saveInferenceContext = context.inferenceContext; + try { + context.contextualType = contextualType; + context.inferenceContext = inferenceContext; + var type = checkExpression(node, checkMode | 1 /* Contextual */ | (inferenceContext ? 2 /* Inferential */ : 0)); + // We strip literal freshness when an appropriate contextual type is present such that contextually typed + // literals always preserve their literal types (otherwise they might widen during type inference). An alternative + // here would be to not mark contextually typed literals as fresh in the first place. + var result = maybeTypeOfKind(type, 2944 /* Literal */) && isLiteralOfContextualType(type, instantiateContextualType(contextualType, node)) ? + getRegularTypeOfLiteralType(type) : type; + return result; + } + finally { + // In the event our operation is canceled or some other exception occurs, reset the contextual type + // so that we do not accidentally hold onto an instance of the checker, as a Type created in the services layer + // may hold onto the checker that created it. + context.contextualType = saveContextualType; + context.inferenceContext = saveInferenceContext; + } + } + function checkExpressionCached(node, checkMode) { + var links = getNodeLinks(node); + if (!links.resolvedType) { + if (checkMode && checkMode !== 0 /* Normal */) { + return checkExpression(node, checkMode); + } + // When computing a type that we're going to cache, we need to ignore any ongoing control flow + // analysis because variables may have transient types in indeterminable states. Moving flowLoopStart + // to the top of the stack ensures all transient types are computed from a known point. + var saveFlowLoopStart = flowLoopStart; + var saveFlowTypeCache = flowTypeCache; + flowLoopStart = flowLoopCount; + flowTypeCache = undefined; + links.resolvedType = checkExpression(node, checkMode); + flowTypeCache = saveFlowTypeCache; + flowLoopStart = saveFlowLoopStart; + } + return links.resolvedType; + } + function isTypeAssertion(node) { + node = ts.skipParentheses(node); + return node.kind === 199 /* TypeAssertionExpression */ || node.kind === 217 /* AsExpression */; + } + function checkDeclarationInitializer(declaration, contextualType) { + var initializer = ts.getEffectiveInitializer(declaration); + var type = getQuickTypeOfExpression(initializer) || + (contextualType ? checkExpressionWithContextualType(initializer, contextualType, /*inferenceContext*/ undefined, 0 /* Normal */) : checkExpressionCached(initializer)); + return ts.isParameter(declaration) && declaration.name.kind === 190 /* ArrayBindingPattern */ && + isTupleType(type) && !type.target.hasRestElement && getTypeReferenceArity(type) < declaration.name.elements.length ? + padTupleType(type, declaration.name) : type; + } + function padTupleType(type, pattern) { + var patternElements = pattern.elements; + var arity = getTypeReferenceArity(type); + var elementTypes = arity ? getTypeArguments(type).slice() : []; + for (var i = arity; i < patternElements.length; i++) { + var e = patternElements[i]; + if (i < patternElements.length - 1 || !(e.kind === 191 /* BindingElement */ && e.dotDotDotToken)) { + elementTypes.push(!ts.isOmittedExpression(e) && hasDefaultValue(e) ? getTypeFromBindingElement(e, /*includePatternInType*/ false, /*reportErrors*/ false) : anyType); + if (!ts.isOmittedExpression(e) && !hasDefaultValue(e)) { + reportImplicitAny(e, anyType); + } + } + } + return createTupleType(elementTypes, type.target.minLength, /*hasRestElement*/ false, type.target.readonly); + } + function widenTypeInferredFromInitializer(declaration, type) { + var widened = ts.getCombinedNodeFlags(declaration) & 2 /* Const */ || ts.isDeclarationReadonly(declaration) ? type : getWidenedLiteralType(type); + if (ts.isInJSFile(declaration)) { + if (widened.flags & 98304 /* Nullable */) { + reportImplicitAny(declaration, anyType); + return anyType; + } + else if (isEmptyArrayLiteralType(widened)) { + reportImplicitAny(declaration, anyArrayType); + return anyArrayType; + } + } + return widened; + } + function isLiteralOfContextualType(candidateType, contextualType) { + if (contextualType) { + if (contextualType.flags & 3145728 /* UnionOrIntersection */) { + var types = contextualType.types; + return ts.some(types, function (t) { return isLiteralOfContextualType(candidateType, t); }); + } + if (contextualType.flags & 58982400 /* InstantiableNonPrimitive */) { + // If the contextual type is a type variable constrained to a primitive type, consider + // this a literal context for literals of that primitive type. For example, given a + // type parameter 'T extends string', infer string literal types for T. + var constraint = getBaseConstraintOfType(contextualType) || unknownType; + return maybeTypeOfKind(constraint, 4 /* String */) && maybeTypeOfKind(candidateType, 128 /* StringLiteral */) || + maybeTypeOfKind(constraint, 8 /* Number */) && maybeTypeOfKind(candidateType, 256 /* NumberLiteral */) || + maybeTypeOfKind(constraint, 64 /* BigInt */) && maybeTypeOfKind(candidateType, 2048 /* BigIntLiteral */) || + maybeTypeOfKind(constraint, 4096 /* ESSymbol */) && maybeTypeOfKind(candidateType, 8192 /* UniqueESSymbol */) || + isLiteralOfContextualType(candidateType, constraint); + } + // If the contextual type is a literal of a particular primitive type, we consider this a + // literal context for all literals of that primitive type. + return !!(contextualType.flags & (128 /* StringLiteral */ | 4194304 /* Index */) && maybeTypeOfKind(candidateType, 128 /* StringLiteral */) || + contextualType.flags & 256 /* NumberLiteral */ && maybeTypeOfKind(candidateType, 256 /* NumberLiteral */) || + contextualType.flags & 2048 /* BigIntLiteral */ && maybeTypeOfKind(candidateType, 2048 /* BigIntLiteral */) || + contextualType.flags & 512 /* BooleanLiteral */ && maybeTypeOfKind(candidateType, 512 /* BooleanLiteral */) || + contextualType.flags & 8192 /* UniqueESSymbol */ && maybeTypeOfKind(candidateType, 8192 /* UniqueESSymbol */)); + } + return false; + } + function isConstContext(node) { + var parent = node.parent; + return ts.isAssertionExpression(parent) && ts.isConstTypeReference(parent.type) || + (ts.isParenthesizedExpression(parent) || ts.isArrayLiteralExpression(parent) || ts.isSpreadElement(parent)) && isConstContext(parent) || + (ts.isPropertyAssignment(parent) || ts.isShorthandPropertyAssignment(parent)) && isConstContext(parent.parent); + } + function checkExpressionForMutableLocation(node, checkMode, contextualType, forceTuple) { + var type = checkExpression(node, checkMode, forceTuple); + return isConstContext(node) ? getRegularTypeOfLiteralType(type) : + isTypeAssertion(node) ? type : + getWidenedLiteralLikeTypeForContextualType(type, instantiateContextualType(arguments.length === 2 ? getContextualType(node) : contextualType, node)); + } + function checkPropertyAssignment(node, checkMode) { + // Do not use hasDynamicName here, because that returns false for well known symbols. + // We want to perform checkComputedPropertyName for all computed properties, including + // well known symbols. + if (node.name.kind === 154 /* ComputedPropertyName */) { + checkComputedPropertyName(node.name); + } + return checkExpressionForMutableLocation(node.initializer, checkMode); + } + function checkObjectLiteralMethod(node, checkMode) { + // Grammar checking + checkGrammarMethod(node); + // Do not use hasDynamicName here, because that returns false for well known symbols. + // We want to perform checkComputedPropertyName for all computed properties, including + // well known symbols. + if (node.name.kind === 154 /* ComputedPropertyName */) { + checkComputedPropertyName(node.name); + } + var uninstantiatedType = checkFunctionExpressionOrObjectLiteralMethod(node, checkMode); + return instantiateTypeWithSingleGenericCallSignature(node, uninstantiatedType, checkMode); + } + function instantiateTypeWithSingleGenericCallSignature(node, type, checkMode) { + if (checkMode && checkMode & (2 /* Inferential */ | 8 /* SkipGenericFunctions */)) { + var callSignature = getSingleSignature(type, 0 /* Call */, /*allowMembers*/ true); + var constructSignature = getSingleSignature(type, 1 /* Construct */, /*allowMembers*/ true); + var signature = callSignature || constructSignature; + if (signature && signature.typeParameters) { + var contextualType = getApparentTypeOfContextualType(node, 2 /* NoConstraints */); + if (contextualType) { + var contextualSignature = getSingleSignature(getNonNullableType(contextualType), callSignature ? 0 /* Call */ : 1 /* Construct */, /*allowMembers*/ false); + if (contextualSignature && !contextualSignature.typeParameters) { + if (checkMode & 8 /* SkipGenericFunctions */) { + skippedGenericFunction(node, checkMode); + return anyFunctionType; + } + var context = getInferenceContext(node); + // We have an expression that is an argument of a generic function for which we are performing + // type argument inference. The expression is of a function type with a single generic call + // signature and a contextual function type with a single non-generic call signature. Now check + // if the outer function returns a function type with a single non-generic call signature and + // if some of the outer function type parameters have no inferences so far. If so, we can + // potentially add inferred type parameters to the outer function return type. + var returnType = context.signature && getReturnTypeOfSignature(context.signature); + var returnSignature = returnType && getSingleCallOrConstructSignature(returnType); + if (returnSignature && !returnSignature.typeParameters && !ts.every(context.inferences, hasInferenceCandidates)) { + // Instantiate the signature with its own type parameters as type arguments, possibly + // renaming the type parameters to ensure they have unique names. + var uniqueTypeParameters = getUniqueTypeParameters(context, signature.typeParameters); + var instantiatedSignature = getSignatureInstantiationWithoutFillingInTypeArguments(signature, uniqueTypeParameters); + // Infer from the parameters of the instantiated signature to the parameters of the + // contextual signature starting with an empty set of inference candidates. + var inferences_3 = ts.map(context.inferences, function (info) { return createInferenceInfo(info.typeParameter); }); + applyToParameterTypes(instantiatedSignature, contextualSignature, function (source, target) { + inferTypes(inferences_3, source, target, /*priority*/ 0, /*contravariant*/ true); + }); + if (ts.some(inferences_3, hasInferenceCandidates)) { + // We have inference candidates, indicating that one or more type parameters are referenced + // in the parameter types of the contextual signature. Now also infer from the return type. + applyToReturnTypes(instantiatedSignature, contextualSignature, function (source, target) { + inferTypes(inferences_3, source, target); + }); + // If the type parameters for which we produced candidates do not have any inferences yet, + // we adopt the new inference candidates and add the type parameters of the expression type + // to the set of inferred type parameters for the outer function return type. + if (!hasOverlappingInferences(context.inferences, inferences_3)) { + mergeInferences(context.inferences, inferences_3); + context.inferredTypeParameters = ts.concatenate(context.inferredTypeParameters, uniqueTypeParameters); + return getOrCreateTypeFromSignature(instantiatedSignature); + } + } + } + return getOrCreateTypeFromSignature(instantiateSignatureInContextOf(signature, contextualSignature, context)); + } + } + } + } + return type; + } + function skippedGenericFunction(node, checkMode) { + if (checkMode & 2 /* Inferential */) { + // We have skipped a generic function during inferential typing. Obtain the inference context and + // indicate this has occurred such that we know a second pass of inference is be needed. + var context = getInferenceContext(node); + context.flags |= 4 /* SkippedGenericFunction */; + } + } + function hasInferenceCandidates(info) { + return !!(info.candidates || info.contraCandidates); + } + function hasOverlappingInferences(a, b) { + for (var i = 0; i < a.length; i++) { + if (hasInferenceCandidates(a[i]) && hasInferenceCandidates(b[i])) { + return true; + } + } + return false; + } + function mergeInferences(target, source) { + for (var i = 0; i < target.length; i++) { + if (!hasInferenceCandidates(target[i]) && hasInferenceCandidates(source[i])) { + target[i] = source[i]; + } + } + } + function getUniqueTypeParameters(context, typeParameters) { + var result = []; + var oldTypeParameters; + var newTypeParameters; + for (var _i = 0, typeParameters_2 = typeParameters; _i < typeParameters_2.length; _i++) { + var tp = typeParameters_2[_i]; + var name = tp.symbol.escapedName; + if (hasTypeParameterByName(context.inferredTypeParameters, name) || hasTypeParameterByName(result, name)) { + var newName = getUniqueTypeParameterName(ts.concatenate(context.inferredTypeParameters, result), name); + var symbol = createSymbol(262144 /* TypeParameter */, newName); + var newTypeParameter = createTypeParameter(symbol); + newTypeParameter.target = tp; + oldTypeParameters = ts.append(oldTypeParameters, tp); + newTypeParameters = ts.append(newTypeParameters, newTypeParameter); + result.push(newTypeParameter); + } + else { + result.push(tp); + } + } + if (newTypeParameters) { + var mapper = createTypeMapper(oldTypeParameters, newTypeParameters); + for (var _a = 0, newTypeParameters_1 = newTypeParameters; _a < newTypeParameters_1.length; _a++) { + var tp = newTypeParameters_1[_a]; + tp.mapper = mapper; + } + } + return result; + } + function hasTypeParameterByName(typeParameters, name) { + return ts.some(typeParameters, function (tp) { return tp.symbol.escapedName === name; }); + } + function getUniqueTypeParameterName(typeParameters, baseName) { + var len = baseName.length; + while (len > 1 && baseName.charCodeAt(len - 1) >= 48 /* _0 */ && baseName.charCodeAt(len - 1) <= 57 /* _9 */) + len--; + var s = baseName.slice(0, len); + for (var index = 1; true; index++) { + var augmentedName = (s + index); + if (!hasTypeParameterByName(typeParameters, augmentedName)) { + return augmentedName; + } + } + } + function getReturnTypeOfSingleNonGenericCallSignature(funcType) { + var signature = getSingleCallSignature(funcType); + if (signature && !signature.typeParameters) { + return getReturnTypeOfSignature(signature); + } + } + function getReturnTypeOfSingleNonGenericSignatureOfCallChain(expr) { + var funcType = checkExpression(expr.expression); + var nonOptionalType = getOptionalExpressionType(funcType, expr.expression); + var returnType = getReturnTypeOfSingleNonGenericCallSignature(funcType); + return returnType && propagateOptionalTypeMarker(returnType, expr, nonOptionalType !== funcType); + } + /** + * Returns the type of an expression. Unlike checkExpression, this function is simply concerned + * with computing the type and may not fully check all contained sub-expressions for errors. + */ + function getTypeOfExpression(node) { + // Don't bother caching types that require no flow analysis and are quick to compute. + var quickType = getQuickTypeOfExpression(node); + if (quickType) { + return quickType; + } + // If a type has been cached for the node, return it. + if (node.flags & 67108864 /* TypeCached */ && flowTypeCache) { + var cachedType = flowTypeCache[getNodeId(node)]; + if (cachedType) { + return cachedType; + } + } + var startInvocationCount = flowInvocationCount; + var type = checkExpression(node); + // If control flow analysis was required to determine the type, it is worth caching. + if (flowInvocationCount !== startInvocationCount) { + var cache = flowTypeCache || (flowTypeCache = []); + cache[getNodeId(node)] = type; + node.flags |= 67108864 /* TypeCached */; + } + return type; + } + function getQuickTypeOfExpression(node) { + var expr = ts.skipParentheses(node); + // Optimize for the common case of a call to a function with a single non-generic call + // signature where we can just fetch the return type without checking the arguments. + if (ts.isCallExpression(expr) && expr.expression.kind !== 102 /* SuperKeyword */ && !ts.isRequireCall(expr, /*checkArgumentIsStringLiteralLike*/ true) && !isSymbolOrSymbolForCall(expr)) { + var type = ts.isCallChain(expr) ? getReturnTypeOfSingleNonGenericSignatureOfCallChain(expr) : + getReturnTypeOfSingleNonGenericCallSignature(checkNonNullExpression(expr.expression)); + if (type) { + return type; + } + } + else if (ts.isAssertionExpression(expr) && !ts.isConstTypeReference(expr.type)) { + return getTypeFromTypeNode(expr.type); + } + else if (node.kind === 8 /* NumericLiteral */ || node.kind === 10 /* StringLiteral */ || + node.kind === 106 /* TrueKeyword */ || node.kind === 91 /* FalseKeyword */) { + return checkExpression(node); + } + return undefined; + } + /** + * Returns the type of an expression. Unlike checkExpression, this function is simply concerned + * with computing the type and may not fully check all contained sub-expressions for errors. + * It is intended for uses where you know there is no contextual type, + * and requesting the contextual type might cause a circularity or other bad behaviour. + * It sets the contextual type of the node to any before calling getTypeOfExpression. + */ + function getContextFreeTypeOfExpression(node) { + var links = getNodeLinks(node); + if (links.contextFreeType) { + return links.contextFreeType; + } + var saveContextualType = node.contextualType; + node.contextualType = anyType; + try { + var type = links.contextFreeType = checkExpression(node, 4 /* SkipContextSensitive */); + return type; + } + finally { + // In the event our operation is canceled or some other exception occurs, reset the contextual type + // so that we do not accidentally hold onto an instance of the checker, as a Type created in the services layer + // may hold onto the checker that created it. + node.contextualType = saveContextualType; + } + } + function checkExpression(node, checkMode, forceTuple) { + var saveCurrentNode = currentNode; + currentNode = node; + instantiationCount = 0; + var uninstantiatedType = checkExpressionWorker(node, checkMode, forceTuple); + var type = instantiateTypeWithSingleGenericCallSignature(node, uninstantiatedType, checkMode); + if (isConstEnumObjectType(type)) { + checkConstEnumAccess(node, type); + } + currentNode = saveCurrentNode; + return type; + } + function checkConstEnumAccess(node, type) { + // enum object type for const enums are only permitted in: + // - 'left' in property access + // - 'object' in indexed access + // - target in rhs of import statement + var ok = (node.parent.kind === 194 /* PropertyAccessExpression */ && node.parent.expression === node) || + (node.parent.kind === 195 /* ElementAccessExpression */ && node.parent.expression === node) || + ((node.kind === 75 /* Identifier */ || node.kind === 153 /* QualifiedName */) && isInRightSideOfImportOrExportAssignment(node) || + (node.parent.kind === 172 /* TypeQuery */ && node.parent.exprName === node)) || + (node.parent.kind === 263 /* ExportSpecifier */); // We allow reexporting const enums + if (!ok) { + error(node, ts.Diagnostics.const_enums_can_only_be_used_in_property_or_index_access_expressions_or_the_right_hand_side_of_an_import_declaration_or_export_assignment_or_type_query); + } + if (compilerOptions.isolatedModules) { + ts.Debug.assert(!!(type.symbol.flags & 128 /* ConstEnum */)); + var constEnumDeclaration = type.symbol.valueDeclaration; + if (constEnumDeclaration.flags & 8388608 /* Ambient */) { + error(node, ts.Diagnostics.Cannot_access_ambient_const_enums_when_the_isolatedModules_flag_is_provided); + } + } + } + function checkParenthesizedExpression(node, checkMode) { + var tag = ts.isInJSFile(node) ? ts.getJSDocTypeTag(node) : undefined; + if (tag) { + return checkAssertionWorker(tag, tag.typeExpression.type, node.expression, checkMode); + } + return checkExpression(node.expression, checkMode); + } + function checkExpressionWorker(node, checkMode, forceTuple) { + var kind = node.kind; + if (cancellationToken) { + // Only bother checking on a few construct kinds. We don't want to be excessively + // hitting the cancellation token on every node we check. + switch (kind) { + case 214 /* ClassExpression */: + case 201 /* FunctionExpression */: + case 202 /* ArrowFunction */: + cancellationToken.throwIfCancellationRequested(); + } + } + switch (kind) { + case 75 /* Identifier */: + return checkIdentifier(node); + case 104 /* ThisKeyword */: + return checkThisExpression(node); + case 102 /* SuperKeyword */: + return checkSuperExpression(node); + case 100 /* NullKeyword */: + return nullWideningType; + case 14 /* NoSubstitutionTemplateLiteral */: + case 10 /* StringLiteral */: + return getFreshTypeOfLiteralType(getLiteralType(node.text)); + case 8 /* NumericLiteral */: + checkGrammarNumericLiteral(node); + return getFreshTypeOfLiteralType(getLiteralType(+node.text)); + case 9 /* BigIntLiteral */: + checkGrammarBigIntLiteral(node); + return getFreshTypeOfLiteralType(getBigIntLiteralType(node)); + case 106 /* TrueKeyword */: + return trueType; + case 91 /* FalseKeyword */: + return falseType; + case 211 /* TemplateExpression */: + return checkTemplateExpression(node); + case 13 /* RegularExpressionLiteral */: + return globalRegExpType; + case 192 /* ArrayLiteralExpression */: + return checkArrayLiteral(node, checkMode, forceTuple); + case 193 /* ObjectLiteralExpression */: + return checkObjectLiteral(node, checkMode); + case 194 /* PropertyAccessExpression */: + return checkPropertyAccessExpression(node); + case 153 /* QualifiedName */: + return checkQualifiedName(node); + case 195 /* ElementAccessExpression */: + return checkIndexedAccess(node); + case 196 /* CallExpression */: + if (node.expression.kind === 96 /* ImportKeyword */) { + return checkImportCallExpression(node); + } + // falls through + case 197 /* NewExpression */: + return checkCallExpression(node, checkMode); + case 198 /* TaggedTemplateExpression */: + return checkTaggedTemplateExpression(node); + case 200 /* ParenthesizedExpression */: + return checkParenthesizedExpression(node, checkMode); + case 214 /* ClassExpression */: + return checkClassExpression(node); + case 201 /* FunctionExpression */: + case 202 /* ArrowFunction */: + return checkFunctionExpressionOrObjectLiteralMethod(node, checkMode); + case 204 /* TypeOfExpression */: + return checkTypeOfExpression(node); + case 199 /* TypeAssertionExpression */: + case 217 /* AsExpression */: + return checkAssertion(node); + case 218 /* NonNullExpression */: + return checkNonNullAssertion(node); + case 219 /* MetaProperty */: + return checkMetaProperty(node); + case 203 /* DeleteExpression */: + return checkDeleteExpression(node); + case 205 /* VoidExpression */: + return checkVoidExpression(node); + case 206 /* AwaitExpression */: + return checkAwaitExpression(node); + case 207 /* PrefixUnaryExpression */: + return checkPrefixUnaryExpression(node); + case 208 /* PostfixUnaryExpression */: + return checkPostfixUnaryExpression(node); + case 209 /* BinaryExpression */: + return checkBinaryExpression(node, checkMode); + case 210 /* ConditionalExpression */: + return checkConditionalExpression(node, checkMode); + case 213 /* SpreadElement */: + return checkSpreadExpression(node, checkMode); + case 215 /* OmittedExpression */: + return undefinedWideningType; + case 212 /* YieldExpression */: + return checkYieldExpression(node); + case 220 /* SyntheticExpression */: + return node.type; + case 276 /* JsxExpression */: + return checkJsxExpression(node, checkMode); + case 266 /* JsxElement */: + return checkJsxElement(node, checkMode); + case 267 /* JsxSelfClosingElement */: + return checkJsxSelfClosingElement(node, checkMode); + case 270 /* JsxFragment */: + return checkJsxFragment(node); + case 274 /* JsxAttributes */: + return checkJsxAttributes(node, checkMode); + case 268 /* JsxOpeningElement */: + ts.Debug.fail("Shouldn't ever directly check a JsxOpeningElement"); + } + return errorType; + } + // DECLARATION AND STATEMENT TYPE CHECKING + function checkTypeParameter(node) { + // Grammar Checking + if (node.expression) { + grammarErrorOnFirstToken(node.expression, ts.Diagnostics.Type_expected); + } + checkSourceElement(node.constraint); + checkSourceElement(node.default); + var typeParameter = getDeclaredTypeOfTypeParameter(getSymbolOfNode(node)); + // Resolve base constraint to reveal circularity errors + getBaseConstraintOfType(typeParameter); + if (!hasNonCircularTypeParameterDefault(typeParameter)) { + error(node.default, ts.Diagnostics.Type_parameter_0_has_a_circular_default, typeToString(typeParameter)); + } + var constraintType = getConstraintOfTypeParameter(typeParameter); + var defaultType = getDefaultFromTypeParameter(typeParameter); + if (constraintType && defaultType) { + checkTypeAssignableTo(defaultType, getTypeWithThisArgument(instantiateType(constraintType, makeUnaryTypeMapper(typeParameter, defaultType)), defaultType), node.default, ts.Diagnostics.Type_0_does_not_satisfy_the_constraint_1); + } + if (produceDiagnostics) { + checkTypeNameIsReserved(node.name, ts.Diagnostics.Type_parameter_name_cannot_be_0); + } + } + function checkParameter(node) { + // Grammar checking + // It is a SyntaxError if the Identifier "eval" or the Identifier "arguments" occurs as the + // Identifier in a PropertySetParameterList of a PropertyAssignment that is contained in strict code + // or if its FunctionBody is strict code(11.1.5). + checkGrammarDecoratorsAndModifiers(node); + checkVariableLikeDeclaration(node); + var func = ts.getContainingFunction(node); + if (ts.hasModifier(node, 92 /* ParameterPropertyModifier */)) { + if (!(func.kind === 162 /* Constructor */ && ts.nodeIsPresent(func.body))) { + error(node, ts.Diagnostics.A_parameter_property_is_only_allowed_in_a_constructor_implementation); + } + if (func.kind === 162 /* Constructor */ && ts.isIdentifier(node.name) && node.name.escapedText === "constructor") { + error(node.name, ts.Diagnostics.constructor_cannot_be_used_as_a_parameter_property_name); + } + } + if (node.questionToken && ts.isBindingPattern(node.name) && func.body) { + error(node, ts.Diagnostics.A_binding_pattern_parameter_cannot_be_optional_in_an_implementation_signature); + } + if (node.name && ts.isIdentifier(node.name) && (node.name.escapedText === "this" || node.name.escapedText === "new")) { + if (func.parameters.indexOf(node) !== 0) { + error(node, ts.Diagnostics.A_0_parameter_must_be_the_first_parameter, node.name.escapedText); + } + if (func.kind === 162 /* Constructor */ || func.kind === 166 /* ConstructSignature */ || func.kind === 171 /* ConstructorType */) { + error(node, ts.Diagnostics.A_constructor_cannot_have_a_this_parameter); + } + if (func.kind === 202 /* ArrowFunction */) { + error(node, ts.Diagnostics.An_arrow_function_cannot_have_a_this_parameter); + } + if (func.kind === 163 /* GetAccessor */ || func.kind === 164 /* SetAccessor */) { + error(node, ts.Diagnostics.get_and_set_accessors_cannot_declare_this_parameters); + } + } + // Only check rest parameter type if it's not a binding pattern. Since binding patterns are + // not allowed in a rest parameter, we already have an error from checkGrammarParameterList. + if (node.dotDotDotToken && !ts.isBindingPattern(node.name) && !isTypeAssignableTo(getReducedType(getTypeOfSymbol(node.symbol)), anyReadonlyArrayType)) { + error(node, ts.Diagnostics.A_rest_parameter_must_be_of_an_array_type); + } + } + function checkTypePredicate(node) { + var parent = getTypePredicateParent(node); + if (!parent) { + // The parent must not be valid. + error(node, ts.Diagnostics.A_type_predicate_is_only_allowed_in_return_type_position_for_functions_and_methods); + return; + } + var signature = getSignatureFromDeclaration(parent); + var typePredicate = getTypePredicateOfSignature(signature); + if (!typePredicate) { + return; + } + checkSourceElement(node.type); + var parameterName = node.parameterName; + if (typePredicate.kind === 0 /* This */ || typePredicate.kind === 2 /* AssertsThis */) { + getTypeFromThisTypeNode(parameterName); + } + else { + if (typePredicate.parameterIndex >= 0) { + if (signatureHasRestParameter(signature) && typePredicate.parameterIndex === signature.parameters.length - 1) { + error(parameterName, ts.Diagnostics.A_type_predicate_cannot_reference_a_rest_parameter); + } + else { + if (typePredicate.type) { + var leadingError = function () { return ts.chainDiagnosticMessages(/*details*/ undefined, ts.Diagnostics.A_type_predicate_s_type_must_be_assignable_to_its_parameter_s_type); }; + checkTypeAssignableTo(typePredicate.type, getTypeOfSymbol(signature.parameters[typePredicate.parameterIndex]), node.type, + /*headMessage*/ undefined, leadingError); + } + } + } + else if (parameterName) { + var hasReportedError = false; + for (var _i = 0, _a = parent.parameters; _i < _a.length; _i++) { + var name = _a[_i].name; + if (ts.isBindingPattern(name) && + checkIfTypePredicateVariableIsDeclaredInBindingPattern(name, parameterName, typePredicate.parameterName)) { + hasReportedError = true; + break; + } + } + if (!hasReportedError) { + error(node.parameterName, ts.Diagnostics.Cannot_find_parameter_0, typePredicate.parameterName); + } + } + } + } + function getTypePredicateParent(node) { + switch (node.parent.kind) { + case 202 /* ArrowFunction */: + case 165 /* CallSignature */: + case 244 /* FunctionDeclaration */: + case 201 /* FunctionExpression */: + case 170 /* FunctionType */: + case 161 /* MethodDeclaration */: + case 160 /* MethodSignature */: + var parent = node.parent; + if (node === parent.type) { + return parent; + } + } + } + function checkIfTypePredicateVariableIsDeclaredInBindingPattern(pattern, predicateVariableNode, predicateVariableName) { + for (var _i = 0, _a = pattern.elements; _i < _a.length; _i++) { + var element = _a[_i]; + if (ts.isOmittedExpression(element)) { + continue; + } + var name = element.name; + if (name.kind === 75 /* Identifier */ && name.escapedText === predicateVariableName) { + error(predicateVariableNode, ts.Diagnostics.A_type_predicate_cannot_reference_element_0_in_a_binding_pattern, predicateVariableName); + return true; + } + else if (name.kind === 190 /* ArrayBindingPattern */ || name.kind === 189 /* ObjectBindingPattern */) { + if (checkIfTypePredicateVariableIsDeclaredInBindingPattern(name, predicateVariableNode, predicateVariableName)) { + return true; + } + } + } + } + function checkSignatureDeclaration(node) { + // Grammar checking + if (node.kind === 167 /* IndexSignature */) { + checkGrammarIndexSignature(node); + } + // TODO (yuisu): Remove this check in else-if when SyntaxKind.Construct is moved and ambient context is handled + else if (node.kind === 170 /* FunctionType */ || node.kind === 244 /* FunctionDeclaration */ || node.kind === 171 /* ConstructorType */ || + node.kind === 165 /* CallSignature */ || node.kind === 162 /* Constructor */ || + node.kind === 166 /* ConstructSignature */) { + checkGrammarFunctionLikeDeclaration(node); + } + var functionFlags = ts.getFunctionFlags(node); + if (!(functionFlags & 4 /* Invalid */)) { + // Async generators prior to ESNext require the __await and __asyncGenerator helpers + if ((functionFlags & 3 /* AsyncGenerator */) === 3 /* AsyncGenerator */ && languageVersion < 99 /* ESNext */) { + checkExternalEmitHelpers(node, 12288 /* AsyncGeneratorIncludes */); + } + // Async functions prior to ES2017 require the __awaiter helper + if ((functionFlags & 3 /* AsyncGenerator */) === 2 /* Async */ && languageVersion < 4 /* ES2017 */) { + checkExternalEmitHelpers(node, 64 /* Awaiter */); + } + // Generator functions, Async functions, and Async Generator functions prior to + // ES2015 require the __generator helper + if ((functionFlags & 3 /* AsyncGenerator */) !== 0 /* Normal */ && languageVersion < 2 /* ES2015 */) { + checkExternalEmitHelpers(node, 128 /* Generator */); + } + } + checkTypeParameters(node.typeParameters); + ts.forEach(node.parameters, checkParameter); + // TODO(rbuckton): Should we start checking JSDoc types? + if (node.type) { + checkSourceElement(node.type); + } + if (produceDiagnostics) { + checkCollisionWithArgumentsInGeneratedCode(node); + var returnTypeNode = ts.getEffectiveReturnTypeNode(node); + if (noImplicitAny && !returnTypeNode) { + switch (node.kind) { + case 166 /* ConstructSignature */: + error(node, ts.Diagnostics.Construct_signature_which_lacks_return_type_annotation_implicitly_has_an_any_return_type); + break; + case 165 /* CallSignature */: + error(node, ts.Diagnostics.Call_signature_which_lacks_return_type_annotation_implicitly_has_an_any_return_type); + break; + } + } + if (returnTypeNode) { + var functionFlags_1 = ts.getFunctionFlags(node); + if ((functionFlags_1 & (4 /* Invalid */ | 1 /* Generator */)) === 1 /* Generator */) { + var returnType = getTypeFromTypeNode(returnTypeNode); + if (returnType === voidType) { + error(returnTypeNode, ts.Diagnostics.A_generator_cannot_have_a_void_type_annotation); + } + else { + // Naively, one could check that Generator is assignable to the return type annotation. + // However, that would not catch the error in the following case. + // + // interface BadGenerator extends Iterable, Iterator { } + // function* g(): BadGenerator { } // Iterable and Iterator have different types! + // + var generatorYieldType = getIterationTypeOfGeneratorFunctionReturnType(0 /* Yield */, returnType, (functionFlags_1 & 2 /* Async */) !== 0) || anyType; + var generatorReturnType = getIterationTypeOfGeneratorFunctionReturnType(1 /* Return */, returnType, (functionFlags_1 & 2 /* Async */) !== 0) || generatorYieldType; + var generatorNextType = getIterationTypeOfGeneratorFunctionReturnType(2 /* Next */, returnType, (functionFlags_1 & 2 /* Async */) !== 0) || unknownType; + var generatorInstantiation = createGeneratorReturnType(generatorYieldType, generatorReturnType, generatorNextType, !!(functionFlags_1 & 2 /* Async */)); + checkTypeAssignableTo(generatorInstantiation, returnType, returnTypeNode); + } + } + else if ((functionFlags_1 & 3 /* AsyncGenerator */) === 2 /* Async */) { + checkAsyncFunctionReturnType(node, returnTypeNode); + } + } + if (node.kind !== 167 /* IndexSignature */ && node.kind !== 300 /* JSDocFunctionType */) { + registerForUnusedIdentifiersCheck(node); + } + } + } + function checkClassForDuplicateDeclarations(node) { + var instanceNames = ts.createUnderscoreEscapedMap(); + var staticNames = ts.createUnderscoreEscapedMap(); + // instance and static private identifiers share the same scope + var privateIdentifiers = ts.createUnderscoreEscapedMap(); + for (var _i = 0, _a = node.members; _i < _a.length; _i++) { + var member = _a[_i]; + if (member.kind === 162 /* Constructor */) { + for (var _b = 0, _c = member.parameters; _b < _c.length; _b++) { + var param = _c[_b]; + if (ts.isParameterPropertyDeclaration(param, member) && !ts.isBindingPattern(param.name)) { + addName(instanceNames, param.name, param.name.escapedText, 3 /* GetOrSetAccessor */); + } + } + } + else { + var isStatic = ts.hasModifier(member, 32 /* Static */); + var name = member.name; + if (!name) { + return; + } + var names = ts.isPrivateIdentifier(name) ? privateIdentifiers : + isStatic ? staticNames : + instanceNames; + var memberName = name && ts.getPropertyNameForPropertyNameNode(name); + if (memberName) { + switch (member.kind) { + case 163 /* GetAccessor */: + addName(names, name, memberName, 1 /* GetAccessor */); + break; + case 164 /* SetAccessor */: + addName(names, name, memberName, 2 /* SetAccessor */); + break; + case 159 /* PropertyDeclaration */: + addName(names, name, memberName, 3 /* GetOrSetAccessor */); + break; + case 161 /* MethodDeclaration */: + addName(names, name, memberName, 8 /* Method */); + break; + } + } + } + } + function addName(names, location, name, meaning) { + var prev = names.get(name); + if (prev) { + if (prev & 8 /* Method */) { + if (meaning !== 8 /* Method */) { + error(location, ts.Diagnostics.Duplicate_identifier_0, ts.getTextOfNode(location)); + } + } + else if (prev & meaning) { + error(location, ts.Diagnostics.Duplicate_identifier_0, ts.getTextOfNode(location)); + } + else { + names.set(name, prev | meaning); + } + } + else { + names.set(name, meaning); + } + } + } + /** + * Static members being set on a constructor function may conflict with built-in properties + * of Function. Esp. in ECMAScript 5 there are non-configurable and non-writable + * built-in properties. This check issues a transpile error when a class has a static + * member with the same name as a non-writable built-in property. + * + * @see http://www.ecma-international.org/ecma-262/5.1/#sec-15.3.3 + * @see http://www.ecma-international.org/ecma-262/5.1/#sec-15.3.5 + * @see http://www.ecma-international.org/ecma-262/6.0/#sec-properties-of-the-function-constructor + * @see http://www.ecma-international.org/ecma-262/6.0/#sec-function-instances + */ + function checkClassForStaticPropertyNameConflicts(node) { + for (var _i = 0, _a = node.members; _i < _a.length; _i++) { + var member = _a[_i]; + var memberNameNode = member.name; + var isStatic = ts.hasModifier(member, 32 /* Static */); + if (isStatic && memberNameNode) { + var memberName = ts.getPropertyNameForPropertyNameNode(memberNameNode); + switch (memberName) { + case "name": + case "length": + case "caller": + case "arguments": + case "prototype": + var message = ts.Diagnostics.Static_property_0_conflicts_with_built_in_property_Function_0_of_constructor_function_1; + var className = getNameOfSymbolAsWritten(getSymbolOfNode(node)); + error(memberNameNode, message, memberName, className); + break; + } + } + } + } + function checkObjectTypeForDuplicateDeclarations(node) { + var names = ts.createMap(); + for (var _i = 0, _a = node.members; _i < _a.length; _i++) { + var member = _a[_i]; + if (member.kind === 158 /* PropertySignature */) { + var memberName = void 0; + var name = member.name; + switch (name.kind) { + case 10 /* StringLiteral */: + case 8 /* NumericLiteral */: + memberName = name.text; + break; + case 75 /* Identifier */: + memberName = ts.idText(name); + break; + default: + continue; + } + if (names.get(memberName)) { + error(ts.getNameOfDeclaration(member.symbol.valueDeclaration), ts.Diagnostics.Duplicate_identifier_0, memberName); + error(member.name, ts.Diagnostics.Duplicate_identifier_0, memberName); + } + else { + names.set(memberName, true); + } + } + } + } + function checkTypeForDuplicateIndexSignatures(node) { + if (node.kind === 246 /* InterfaceDeclaration */) { + var nodeSymbol = getSymbolOfNode(node); + // in case of merging interface declaration it is possible that we'll enter this check procedure several times for every declaration + // to prevent this run check only for the first declaration of a given kind + if (nodeSymbol.declarations.length > 0 && nodeSymbol.declarations[0] !== node) { + return; + } + } + // TypeScript 1.0 spec (April 2014) + // 3.7.4: An object type can contain at most one string index signature and one numeric index signature. + // 8.5: A class declaration can have at most one string index member declaration and one numeric index member declaration + var indexSymbol = getIndexSymbol(getSymbolOfNode(node)); + if (indexSymbol) { + var seenNumericIndexer = false; + var seenStringIndexer = false; + for (var _i = 0, _a = indexSymbol.declarations; _i < _a.length; _i++) { + var decl = _a[_i]; + var declaration = decl; + if (declaration.parameters.length === 1 && declaration.parameters[0].type) { + switch (declaration.parameters[0].type.kind) { + case 143 /* StringKeyword */: + if (!seenStringIndexer) { + seenStringIndexer = true; + } + else { + error(declaration, ts.Diagnostics.Duplicate_string_index_signature); + } + break; + case 140 /* NumberKeyword */: + if (!seenNumericIndexer) { + seenNumericIndexer = true; + } + else { + error(declaration, ts.Diagnostics.Duplicate_number_index_signature); + } + break; + } + } + } + } + } + function checkPropertyDeclaration(node) { + // Grammar checking + if (!checkGrammarDecoratorsAndModifiers(node) && !checkGrammarProperty(node)) + checkGrammarComputedPropertyName(node.name); + checkVariableLikeDeclaration(node); + // Private class fields transformation relies on WeakMaps. + if (ts.isPrivateIdentifier(node.name) && languageVersion < 99 /* ESNext */) { + for (var lexicalScope = ts.getEnclosingBlockScopeContainer(node); !!lexicalScope; lexicalScope = ts.getEnclosingBlockScopeContainer(lexicalScope)) { + getNodeLinks(lexicalScope).flags |= 67108864 /* ContainsClassWithPrivateIdentifiers */; + } + } + } + function checkPropertySignature(node) { + if (ts.isPrivateIdentifier(node.name)) { + error(node, ts.Diagnostics.Private_identifiers_are_not_allowed_outside_class_bodies); + } + return checkPropertyDeclaration(node); + } + function checkMethodDeclaration(node) { + // Grammar checking + if (!checkGrammarMethod(node)) + checkGrammarComputedPropertyName(node.name); + if (ts.isPrivateIdentifier(node.name)) { + error(node, ts.Diagnostics.A_method_cannot_be_named_with_a_private_identifier); + } + // Grammar checking for modifiers is done inside the function checkGrammarFunctionLikeDeclaration + checkFunctionOrMethodDeclaration(node); + // Abstract methods cannot have an implementation. + // Extra checks are to avoid reporting multiple errors relating to the "abstractness" of the node. + if (ts.hasModifier(node, 128 /* Abstract */) && node.kind === 161 /* MethodDeclaration */ && node.body) { + error(node, ts.Diagnostics.Method_0_cannot_have_an_implementation_because_it_is_marked_abstract, ts.declarationNameToString(node.name)); + } + } + function checkConstructorDeclaration(node) { + // Grammar check on signature of constructor and modifier of the constructor is done in checkSignatureDeclaration function. + checkSignatureDeclaration(node); + // Grammar check for checking only related to constructorDeclaration + if (!checkGrammarConstructorTypeParameters(node)) + checkGrammarConstructorTypeAnnotation(node); + checkSourceElement(node.body); + var symbol = getSymbolOfNode(node); + var firstDeclaration = ts.getDeclarationOfKind(symbol, node.kind); + // Only type check the symbol once + if (node === firstDeclaration) { + checkFunctionOrConstructorSymbol(symbol); + } + // exit early in the case of signature - super checks are not relevant to them + if (ts.nodeIsMissing(node.body)) { + return; + } + if (!produceDiagnostics) { + return; + } + function isInstancePropertyWithInitializerOrPrivateIdentifierProperty(n) { + if (ts.isPrivateIdentifierPropertyDeclaration(n)) { + return true; + } + return n.kind === 159 /* PropertyDeclaration */ && + !ts.hasModifier(n, 32 /* Static */) && + !!n.initializer; + } + // TS 1.0 spec (April 2014): 8.3.2 + // Constructors of classes with no extends clause may not contain super calls, whereas + // constructors of derived classes must contain at least one super call somewhere in their function body. + var containingClassDecl = node.parent; + if (ts.getClassExtendsHeritageElement(containingClassDecl)) { + captureLexicalThis(node.parent, containingClassDecl); + var classExtendsNull = classDeclarationExtendsNull(containingClassDecl); + var superCall = getSuperCallInConstructor(node); + if (superCall) { + if (classExtendsNull) { + error(superCall, ts.Diagnostics.A_constructor_cannot_contain_a_super_call_when_its_class_extends_null); + } + // The first statement in the body of a constructor (excluding prologue directives) must be a super call + // if both of the following are true: + // - The containing class is a derived class. + // - The constructor declares parameter properties + // or the containing class declares instance member variables with initializers. + var superCallShouldBeFirst = (compilerOptions.target !== 99 /* ESNext */ || !compilerOptions.useDefineForClassFields) && + (ts.some(node.parent.members, isInstancePropertyWithInitializerOrPrivateIdentifierProperty) || + ts.some(node.parameters, function (p) { return ts.hasModifier(p, 92 /* ParameterPropertyModifier */); })); + // Skip past any prologue directives to find the first statement + // to ensure that it was a super call. + if (superCallShouldBeFirst) { + var statements = node.body.statements; + var superCallStatement = void 0; + for (var _i = 0, statements_3 = statements; _i < statements_3.length; _i++) { + var statement = statements_3[_i]; + if (statement.kind === 226 /* ExpressionStatement */ && ts.isSuperCall(statement.expression)) { + superCallStatement = statement; + break; + } + if (!ts.isPrologueDirective(statement)) { + break; + } + } + if (!superCallStatement) { + error(node, ts.Diagnostics.A_super_call_must_be_the_first_statement_in_the_constructor_when_a_class_contains_initialized_properties_parameter_properties_or_private_identifiers); + } + } + } + else if (!classExtendsNull) { + error(node, ts.Diagnostics.Constructors_for_derived_classes_must_contain_a_super_call); + } + } + } + function checkAccessorDeclaration(node) { + if (produceDiagnostics) { + // Grammar checking accessors + if (!checkGrammarFunctionLikeDeclaration(node) && !checkGrammarAccessor(node)) + checkGrammarComputedPropertyName(node.name); + checkDecorators(node); + checkSignatureDeclaration(node); + if (node.kind === 163 /* GetAccessor */) { + if (!(node.flags & 8388608 /* Ambient */) && ts.nodeIsPresent(node.body) && (node.flags & 256 /* HasImplicitReturn */)) { + if (!(node.flags & 512 /* HasExplicitReturn */)) { + error(node.name, ts.Diagnostics.A_get_accessor_must_return_a_value); + } + } + } + // Do not use hasDynamicName here, because that returns false for well known symbols. + // We want to perform checkComputedPropertyName for all computed properties, including + // well known symbols. + if (node.name.kind === 154 /* ComputedPropertyName */) { + checkComputedPropertyName(node.name); + } + if (ts.isPrivateIdentifier(node.name)) { + error(node.name, ts.Diagnostics.An_accessor_cannot_be_named_with_a_private_identifier); + } + if (!hasNonBindableDynamicName(node)) { + // TypeScript 1.0 spec (April 2014): 8.4.3 + // Accessors for the same member name must specify the same accessibility. + var otherKind = node.kind === 163 /* GetAccessor */ ? 164 /* SetAccessor */ : 163 /* GetAccessor */; + var otherAccessor = ts.getDeclarationOfKind(getSymbolOfNode(node), otherKind); + if (otherAccessor) { + var nodeFlags = ts.getModifierFlags(node); + var otherFlags = ts.getModifierFlags(otherAccessor); + if ((nodeFlags & 28 /* AccessibilityModifier */) !== (otherFlags & 28 /* AccessibilityModifier */)) { + error(node.name, ts.Diagnostics.Getter_and_setter_accessors_do_not_agree_in_visibility); + } + if ((nodeFlags & 128 /* Abstract */) !== (otherFlags & 128 /* Abstract */)) { + error(node.name, ts.Diagnostics.Accessors_must_both_be_abstract_or_non_abstract); + } + // TypeScript 1.0 spec (April 2014): 4.5 + // If both accessors include type annotations, the specified types must be identical. + checkAccessorDeclarationTypesIdentical(node, otherAccessor, getAnnotatedAccessorType, ts.Diagnostics.get_and_set_accessor_must_have_the_same_type); + checkAccessorDeclarationTypesIdentical(node, otherAccessor, getThisTypeOfDeclaration, ts.Diagnostics.get_and_set_accessor_must_have_the_same_this_type); + } + } + var returnType = getTypeOfAccessors(getSymbolOfNode(node)); + if (node.kind === 163 /* GetAccessor */) { + checkAllCodePathsInNonVoidFunctionReturnOrThrow(node, returnType); + } + } + checkSourceElement(node.body); + } + function checkAccessorDeclarationTypesIdentical(first, second, getAnnotatedType, message) { + var firstType = getAnnotatedType(first); + var secondType = getAnnotatedType(second); + if (firstType && secondType && !isTypeIdenticalTo(firstType, secondType)) { + error(first, message); + } + } + function checkMissingDeclaration(node) { + checkDecorators(node); + } + function getEffectiveTypeArguments(node, typeParameters) { + return fillMissingTypeArguments(ts.map(node.typeArguments, getTypeFromTypeNode), typeParameters, getMinTypeArgumentCount(typeParameters), ts.isInJSFile(node)); + } + function checkTypeArgumentConstraints(node, typeParameters) { + var typeArguments; + var mapper; + var result = true; + for (var i = 0; i < typeParameters.length; i++) { + var constraint = getConstraintOfTypeParameter(typeParameters[i]); + if (constraint) { + if (!typeArguments) { + typeArguments = getEffectiveTypeArguments(node, typeParameters); + mapper = createTypeMapper(typeParameters, typeArguments); + } + result = result && checkTypeAssignableTo(typeArguments[i], instantiateType(constraint, mapper), node.typeArguments[i], ts.Diagnostics.Type_0_does_not_satisfy_the_constraint_1); + } + } + return result; + } + function getTypeParametersForTypeReference(node) { + var type = getTypeFromTypeReference(node); + if (type !== errorType) { + var symbol = getNodeLinks(node).resolvedSymbol; + if (symbol) { + return symbol.flags & 524288 /* TypeAlias */ && getSymbolLinks(symbol).typeParameters || + (ts.getObjectFlags(type) & 4 /* Reference */ ? type.target.localTypeParameters : undefined); + } + } + return undefined; + } + function checkTypeReferenceNode(node) { + checkGrammarTypeArguments(node, node.typeArguments); + if (node.kind === 169 /* TypeReference */ && node.typeName.jsdocDotPos !== undefined && !ts.isInJSFile(node) && !ts.isInJSDoc(node)) { + grammarErrorAtPos(node, node.typeName.jsdocDotPos, 1, ts.Diagnostics.JSDoc_types_can_only_be_used_inside_documentation_comments); + } + ts.forEach(node.typeArguments, checkSourceElement); + var type = getTypeFromTypeReference(node); + if (type !== errorType) { + if (node.typeArguments && produceDiagnostics) { + var typeParameters = getTypeParametersForTypeReference(node); + if (typeParameters) { + checkTypeArgumentConstraints(node, typeParameters); + } + } + if (type.flags & 32 /* Enum */ && getNodeLinks(node).resolvedSymbol.flags & 8 /* EnumMember */) { + error(node, ts.Diagnostics.Enum_type_0_has_members_with_initializers_that_are_not_literals, typeToString(type)); + } + } + } + function getTypeArgumentConstraint(node) { + var typeReferenceNode = ts.tryCast(node.parent, ts.isTypeReferenceType); + if (!typeReferenceNode) + return undefined; + var typeParameters = getTypeParametersForTypeReference(typeReferenceNode); // TODO: GH#18217 + var constraint = getConstraintOfTypeParameter(typeParameters[typeReferenceNode.typeArguments.indexOf(node)]); + return constraint && instantiateType(constraint, createTypeMapper(typeParameters, getEffectiveTypeArguments(typeReferenceNode, typeParameters))); + } + function checkTypeQuery(node) { + getTypeFromTypeQueryNode(node); + } + function checkTypeLiteral(node) { + ts.forEach(node.members, checkSourceElement); + if (produceDiagnostics) { + var type = getTypeFromTypeLiteralOrFunctionOrConstructorTypeNode(node); + checkIndexConstraints(type); + checkTypeForDuplicateIndexSignatures(node); + checkObjectTypeForDuplicateDeclarations(node); + } + } + function checkArrayType(node) { + checkSourceElement(node.elementType); + } + function checkTupleType(node) { + var elementTypes = node.elementTypes; + var seenOptionalElement = false; + for (var i = 0; i < elementTypes.length; i++) { + var e = elementTypes[i]; + if (e.kind === 177 /* RestType */) { + if (i !== elementTypes.length - 1) { + grammarErrorOnNode(e, ts.Diagnostics.A_rest_element_must_be_last_in_a_tuple_type); + break; + } + if (!isArrayType(getTypeFromTypeNode(e.type))) { + error(e, ts.Diagnostics.A_rest_element_type_must_be_an_array_type); + } + } + else if (e.kind === 176 /* OptionalType */) { + seenOptionalElement = true; + } + else if (seenOptionalElement) { + grammarErrorOnNode(e, ts.Diagnostics.A_required_element_cannot_follow_an_optional_element); + break; + } + } + ts.forEach(node.elementTypes, checkSourceElement); + } + function checkUnionOrIntersectionType(node) { + ts.forEach(node.types, checkSourceElement); + } + function checkIndexedAccessIndexType(type, accessNode) { + if (!(type.flags & 8388608 /* IndexedAccess */)) { + return type; + } + // Check if the index type is assignable to 'keyof T' for the object type. + var objectType = type.objectType; + var indexType = type.indexType; + if (isTypeAssignableTo(indexType, getIndexType(objectType, /*stringsOnly*/ false))) { + if (accessNode.kind === 195 /* ElementAccessExpression */ && ts.isAssignmentTarget(accessNode) && + ts.getObjectFlags(objectType) & 32 /* Mapped */ && getMappedTypeModifiers(objectType) & 1 /* IncludeReadonly */) { + error(accessNode, ts.Diagnostics.Index_signature_in_type_0_only_permits_reading, typeToString(objectType)); + } + return type; + } + // Check if we're indexing with a numeric type and if either object or index types + // is a generic type with a constraint that has a numeric index signature. + var apparentObjectType = getApparentType(objectType); + if (getIndexInfoOfType(apparentObjectType, 1 /* Number */) && isTypeAssignableToKind(indexType, 296 /* NumberLike */)) { + return type; + } + if (isGenericObjectType(objectType)) { + var propertyName_1 = getPropertyNameFromIndex(indexType, accessNode); + if (propertyName_1) { + var propertySymbol = forEachType(apparentObjectType, function (t) { return getPropertyOfType(t, propertyName_1); }); + if (propertySymbol && ts.getDeclarationModifierFlagsFromSymbol(propertySymbol) & 24 /* NonPublicAccessibilityModifier */) { + error(accessNode, ts.Diagnostics.Private_or_protected_member_0_cannot_be_accessed_on_a_type_parameter, ts.unescapeLeadingUnderscores(propertyName_1)); + return errorType; + } + } + } + error(accessNode, ts.Diagnostics.Type_0_cannot_be_used_to_index_type_1, typeToString(indexType), typeToString(objectType)); + return errorType; + } + function checkIndexedAccessType(node) { + checkSourceElement(node.objectType); + checkSourceElement(node.indexType); + checkIndexedAccessIndexType(getTypeFromIndexedAccessTypeNode(node), node); + } + function checkMappedType(node) { + checkSourceElement(node.typeParameter); + checkSourceElement(node.type); + if (!node.type) { + reportImplicitAny(node, anyType); + } + var type = getTypeFromMappedTypeNode(node); + var constraintType = getConstraintTypeFromMappedType(type); + checkTypeAssignableTo(constraintType, keyofConstraintType, ts.getEffectiveConstraintOfTypeParameter(node.typeParameter)); + } + function checkThisType(node) { + getTypeFromThisTypeNode(node); + } + function checkTypeOperator(node) { + checkGrammarTypeOperatorNode(node); + checkSourceElement(node.type); + } + function checkConditionalType(node) { + ts.forEachChild(node, checkSourceElement); + } + function checkInferType(node) { + if (!ts.findAncestor(node, function (n) { return n.parent && n.parent.kind === 180 /* ConditionalType */ && n.parent.extendsType === n; })) { + grammarErrorOnNode(node, ts.Diagnostics.infer_declarations_are_only_permitted_in_the_extends_clause_of_a_conditional_type); + } + checkSourceElement(node.typeParameter); + registerForUnusedIdentifiersCheck(node); + } + function checkImportType(node) { + checkSourceElement(node.argument); + getTypeFromTypeNode(node); + } + function isPrivateWithinAmbient(node) { + return (ts.hasModifier(node, 8 /* Private */) || ts.isPrivateIdentifierPropertyDeclaration(node)) && !!(node.flags & 8388608 /* Ambient */); + } + function getEffectiveDeclarationFlags(n, flagsToCheck) { + var flags = ts.getCombinedModifierFlags(n); + // children of classes (even ambient classes) should not be marked as ambient or export + // because those flags have no useful semantics there. + if (n.parent.kind !== 246 /* InterfaceDeclaration */ && + n.parent.kind !== 245 /* ClassDeclaration */ && + n.parent.kind !== 214 /* ClassExpression */ && + n.flags & 8388608 /* Ambient */) { + if (!(flags & 2 /* Ambient */) && !(ts.isModuleBlock(n.parent) && ts.isModuleDeclaration(n.parent.parent) && ts.isGlobalScopeAugmentation(n.parent.parent))) { + // It is nested in an ambient context, which means it is automatically exported + flags |= 1 /* Export */; + } + flags |= 2 /* Ambient */; + } + return flags & flagsToCheck; + } + function checkFunctionOrConstructorSymbol(symbol) { + if (!produceDiagnostics) { + return; + } + function getCanonicalOverload(overloads, implementation) { + // Consider the canonical set of flags to be the flags of the bodyDeclaration or the first declaration + // Error on all deviations from this canonical set of flags + // The caveat is that if some overloads are defined in lib.d.ts, we don't want to + // report the errors on those. To achieve this, we will say that the implementation is + // the canonical signature only if it is in the same container as the first overload + var implementationSharesContainerWithFirstOverload = implementation !== undefined && implementation.parent === overloads[0].parent; + return implementationSharesContainerWithFirstOverload ? implementation : overloads[0]; + } + function checkFlagAgreementBetweenOverloads(overloads, implementation, flagsToCheck, someOverloadFlags, allOverloadFlags) { + // Error if some overloads have a flag that is not shared by all overloads. To find the + // deviations, we XOR someOverloadFlags with allOverloadFlags + var someButNotAllOverloadFlags = someOverloadFlags ^ allOverloadFlags; + if (someButNotAllOverloadFlags !== 0) { + var canonicalFlags_1 = getEffectiveDeclarationFlags(getCanonicalOverload(overloads, implementation), flagsToCheck); + ts.forEach(overloads, function (o) { + var deviation = getEffectiveDeclarationFlags(o, flagsToCheck) ^ canonicalFlags_1; + if (deviation & 1 /* Export */) { + error(ts.getNameOfDeclaration(o), ts.Diagnostics.Overload_signatures_must_all_be_exported_or_non_exported); + } + else if (deviation & 2 /* Ambient */) { + error(ts.getNameOfDeclaration(o), ts.Diagnostics.Overload_signatures_must_all_be_ambient_or_non_ambient); + } + else if (deviation & (8 /* Private */ | 16 /* Protected */)) { + error(ts.getNameOfDeclaration(o) || o, ts.Diagnostics.Overload_signatures_must_all_be_public_private_or_protected); + } + else if (deviation & 128 /* Abstract */) { + error(ts.getNameOfDeclaration(o), ts.Diagnostics.Overload_signatures_must_all_be_abstract_or_non_abstract); + } + }); + } + } + function checkQuestionTokenAgreementBetweenOverloads(overloads, implementation, someHaveQuestionToken, allHaveQuestionToken) { + if (someHaveQuestionToken !== allHaveQuestionToken) { + var canonicalHasQuestionToken_1 = ts.hasQuestionToken(getCanonicalOverload(overloads, implementation)); + ts.forEach(overloads, function (o) { + var deviation = ts.hasQuestionToken(o) !== canonicalHasQuestionToken_1; + if (deviation) { + error(ts.getNameOfDeclaration(o), ts.Diagnostics.Overload_signatures_must_all_be_optional_or_required); + } + }); + } + } + var flagsToCheck = 1 /* Export */ | 2 /* Ambient */ | 8 /* Private */ | 16 /* Protected */ | 128 /* Abstract */; + var someNodeFlags = 0 /* None */; + var allNodeFlags = flagsToCheck; + var someHaveQuestionToken = false; + var allHaveQuestionToken = true; + var hasOverloads = false; + var bodyDeclaration; + var lastSeenNonAmbientDeclaration; + var previousDeclaration; + var declarations = symbol.declarations; + var isConstructor = (symbol.flags & 16384 /* Constructor */) !== 0; + function reportImplementationExpectedError(node) { + if (node.name && ts.nodeIsMissing(node.name)) { + return; + } + var seen = false; + var subsequentNode = ts.forEachChild(node.parent, function (c) { + if (seen) { + return c; + } + else { + seen = c === node; + } + }); + // We may be here because of some extra nodes between overloads that could not be parsed into a valid node. + // In this case the subsequent node is not really consecutive (.pos !== node.end), and we must ignore it here. + if (subsequentNode && subsequentNode.pos === node.end) { + if (subsequentNode.kind === node.kind) { + var errorNode_1 = subsequentNode.name || subsequentNode; + var subsequentName = subsequentNode.name; + if (node.name && subsequentName && ( + // both are private identifiers + ts.isPrivateIdentifier(node.name) && ts.isPrivateIdentifier(subsequentName) && node.name.escapedText === subsequentName.escapedText || + // Both are computed property names + // TODO: GH#17345: These are methods, so handle computed name case. (`Always allowing computed property names is *not* the correct behavior!) + ts.isComputedPropertyName(node.name) && ts.isComputedPropertyName(subsequentName) || + // Both are literal property names that are the same. + ts.isPropertyNameLiteral(node.name) && ts.isPropertyNameLiteral(subsequentName) && + ts.getEscapedTextOfIdentifierOrLiteral(node.name) === ts.getEscapedTextOfIdentifierOrLiteral(subsequentName))) { + var reportError = (node.kind === 161 /* MethodDeclaration */ || node.kind === 160 /* MethodSignature */) && + ts.hasModifier(node, 32 /* Static */) !== ts.hasModifier(subsequentNode, 32 /* Static */); + // we can get here in two cases + // 1. mixed static and instance class members + // 2. something with the same name was defined before the set of overloads that prevents them from merging + // here we'll report error only for the first case since for second we should already report error in binder + if (reportError) { + var diagnostic = ts.hasModifier(node, 32 /* Static */) ? ts.Diagnostics.Function_overload_must_be_static : ts.Diagnostics.Function_overload_must_not_be_static; + error(errorNode_1, diagnostic); + } + return; + } + if (ts.nodeIsPresent(subsequentNode.body)) { + error(errorNode_1, ts.Diagnostics.Function_implementation_name_must_be_0, ts.declarationNameToString(node.name)); + return; + } + } + } + var errorNode = node.name || node; + if (isConstructor) { + error(errorNode, ts.Diagnostics.Constructor_implementation_is_missing); + } + else { + // Report different errors regarding non-consecutive blocks of declarations depending on whether + // the node in question is abstract. + if (ts.hasModifier(node, 128 /* Abstract */)) { + error(errorNode, ts.Diagnostics.All_declarations_of_an_abstract_method_must_be_consecutive); + } + else { + error(errorNode, ts.Diagnostics.Function_implementation_is_missing_or_not_immediately_following_the_declaration); + } + } + } + var duplicateFunctionDeclaration = false; + var multipleConstructorImplementation = false; + var hasNonAmbientClass = false; + for (var _i = 0, declarations_4 = declarations; _i < declarations_4.length; _i++) { + var current = declarations_4[_i]; + var node = current; + var inAmbientContext = node.flags & 8388608 /* Ambient */; + var inAmbientContextOrInterface = node.parent.kind === 246 /* InterfaceDeclaration */ || node.parent.kind === 173 /* TypeLiteral */ || inAmbientContext; + if (inAmbientContextOrInterface) { + // check if declarations are consecutive only if they are non-ambient + // 1. ambient declarations can be interleaved + // i.e. this is legal + // declare function foo(); + // declare function bar(); + // declare function foo(); + // 2. mixing ambient and non-ambient declarations is a separate error that will be reported - do not want to report an extra one + previousDeclaration = undefined; + } + if ((node.kind === 245 /* ClassDeclaration */ || node.kind === 214 /* ClassExpression */) && !inAmbientContext) { + hasNonAmbientClass = true; + } + if (node.kind === 244 /* FunctionDeclaration */ || node.kind === 161 /* MethodDeclaration */ || node.kind === 160 /* MethodSignature */ || node.kind === 162 /* Constructor */) { + var currentNodeFlags = getEffectiveDeclarationFlags(node, flagsToCheck); + someNodeFlags |= currentNodeFlags; + allNodeFlags &= currentNodeFlags; + someHaveQuestionToken = someHaveQuestionToken || ts.hasQuestionToken(node); + allHaveQuestionToken = allHaveQuestionToken && ts.hasQuestionToken(node); + if (ts.nodeIsPresent(node.body) && bodyDeclaration) { + if (isConstructor) { + multipleConstructorImplementation = true; + } + else { + duplicateFunctionDeclaration = true; + } + } + else if (previousDeclaration && previousDeclaration.parent === node.parent && previousDeclaration.end !== node.pos) { + reportImplementationExpectedError(previousDeclaration); + } + if (ts.nodeIsPresent(node.body)) { + if (!bodyDeclaration) { + bodyDeclaration = node; + } + } + else { + hasOverloads = true; + } + previousDeclaration = node; + if (!inAmbientContextOrInterface) { + lastSeenNonAmbientDeclaration = node; + } + } + } + if (multipleConstructorImplementation) { + ts.forEach(declarations, function (declaration) { + error(declaration, ts.Diagnostics.Multiple_constructor_implementations_are_not_allowed); + }); + } + if (duplicateFunctionDeclaration) { + ts.forEach(declarations, function (declaration) { + error(ts.getNameOfDeclaration(declaration), ts.Diagnostics.Duplicate_function_implementation); + }); + } + if (hasNonAmbientClass && !isConstructor && symbol.flags & 16 /* Function */) { + // A non-ambient class cannot be an implementation for a non-constructor function/class merge + // TODO: The below just replicates our older error from when classes and functions were + // entirely unable to merge - a more helpful message like "Class declaration cannot implement overload list" + // might be warranted. :shrug: + ts.forEach(declarations, function (declaration) { + addDuplicateDeclarationError(declaration, ts.Diagnostics.Duplicate_identifier_0, ts.symbolName(symbol), declarations); + }); + } + // Abstract methods can't have an implementation -- in particular, they don't need one. + if (lastSeenNonAmbientDeclaration && !lastSeenNonAmbientDeclaration.body && + !ts.hasModifier(lastSeenNonAmbientDeclaration, 128 /* Abstract */) && !lastSeenNonAmbientDeclaration.questionToken) { + reportImplementationExpectedError(lastSeenNonAmbientDeclaration); + } + if (hasOverloads) { + checkFlagAgreementBetweenOverloads(declarations, bodyDeclaration, flagsToCheck, someNodeFlags, allNodeFlags); + checkQuestionTokenAgreementBetweenOverloads(declarations, bodyDeclaration, someHaveQuestionToken, allHaveQuestionToken); + if (bodyDeclaration) { + var signatures = getSignaturesOfSymbol(symbol); + var bodySignature = getSignatureFromDeclaration(bodyDeclaration); + for (var _a = 0, signatures_10 = signatures; _a < signatures_10.length; _a++) { + var signature = signatures_10[_a]; + if (!isImplementationCompatibleWithOverload(bodySignature, signature)) { + ts.addRelatedInfo(error(signature.declaration, ts.Diagnostics.This_overload_signature_is_not_compatible_with_its_implementation_signature), ts.createDiagnosticForNode(bodyDeclaration, ts.Diagnostics.The_implementation_signature_is_declared_here)); + break; + } + } + } + } + } + function checkExportsOnMergedDeclarations(node) { + if (!produceDiagnostics) { + return; + } + // if localSymbol is defined on node then node itself is exported - check is required + var symbol = node.localSymbol; + if (!symbol) { + // local symbol is undefined => this declaration is non-exported. + // however symbol might contain other declarations that are exported + symbol = getSymbolOfNode(node); + if (!symbol.exportSymbol) { + // this is a pure local symbol (all declarations are non-exported) - no need to check anything + return; + } + } + // run the check only for the first declaration in the list + if (ts.getDeclarationOfKind(symbol, node.kind) !== node) { + return; + } + var exportedDeclarationSpaces = 0 /* None */; + var nonExportedDeclarationSpaces = 0 /* None */; + var defaultExportedDeclarationSpaces = 0 /* None */; + for (var _i = 0, _a = symbol.declarations; _i < _a.length; _i++) { + var d = _a[_i]; + var declarationSpaces = getDeclarationSpaces(d); + var effectiveDeclarationFlags = getEffectiveDeclarationFlags(d, 1 /* Export */ | 512 /* Default */); + if (effectiveDeclarationFlags & 1 /* Export */) { + if (effectiveDeclarationFlags & 512 /* Default */) { + defaultExportedDeclarationSpaces |= declarationSpaces; + } + else { + exportedDeclarationSpaces |= declarationSpaces; + } + } + else { + nonExportedDeclarationSpaces |= declarationSpaces; + } + } + // Spaces for anything not declared a 'default export'. + var nonDefaultExportedDeclarationSpaces = exportedDeclarationSpaces | nonExportedDeclarationSpaces; + var commonDeclarationSpacesForExportsAndLocals = exportedDeclarationSpaces & nonExportedDeclarationSpaces; + var commonDeclarationSpacesForDefaultAndNonDefault = defaultExportedDeclarationSpaces & nonDefaultExportedDeclarationSpaces; + if (commonDeclarationSpacesForExportsAndLocals || commonDeclarationSpacesForDefaultAndNonDefault) { + // declaration spaces for exported and non-exported declarations intersect + for (var _b = 0, _c = symbol.declarations; _b < _c.length; _b++) { + var d = _c[_b]; + var declarationSpaces = getDeclarationSpaces(d); + var name = ts.getNameOfDeclaration(d); + // Only error on the declarations that contributed to the intersecting spaces. + if (declarationSpaces & commonDeclarationSpacesForDefaultAndNonDefault) { + error(name, ts.Diagnostics.Merged_declaration_0_cannot_include_a_default_export_declaration_Consider_adding_a_separate_export_default_0_declaration_instead, ts.declarationNameToString(name)); + } + else if (declarationSpaces & commonDeclarationSpacesForExportsAndLocals) { + error(name, ts.Diagnostics.Individual_declarations_in_merged_declaration_0_must_be_all_exported_or_all_local, ts.declarationNameToString(name)); + } + } + } + function getDeclarationSpaces(decl) { + var d = decl; + switch (d.kind) { + case 246 /* InterfaceDeclaration */: + case 247 /* TypeAliasDeclaration */: + // A jsdoc typedef and callback are, by definition, type aliases. + // falls through + case 322 /* JSDocTypedefTag */: + case 315 /* JSDocCallbackTag */: + case 316 /* JSDocEnumTag */: + return 2 /* ExportType */; + case 249 /* ModuleDeclaration */: + return ts.isAmbientModule(d) || ts.getModuleInstanceState(d) !== 0 /* NonInstantiated */ + ? 4 /* ExportNamespace */ | 1 /* ExportValue */ + : 4 /* ExportNamespace */; + case 245 /* ClassDeclaration */: + case 248 /* EnumDeclaration */: + case 284 /* EnumMember */: + return 2 /* ExportType */ | 1 /* ExportValue */; + case 290 /* SourceFile */: + return 2 /* ExportType */ | 1 /* ExportValue */ | 4 /* ExportNamespace */; + case 259 /* ExportAssignment */: + // Export assigned entity name expressions act as aliases and should fall through, otherwise they export values + if (!ts.isEntityNameExpression(d.expression)) { + return 1 /* ExportValue */; + } + d = d.expression; + // The below options all declare an Alias, which is allowed to merge with other values within the importing module. + // falls through + case 253 /* ImportEqualsDeclaration */: + case 256 /* NamespaceImport */: + case 255 /* ImportClause */: + var result_10 = 0 /* None */; + var target = resolveAlias(getSymbolOfNode(d)); + ts.forEach(target.declarations, function (d) { result_10 |= getDeclarationSpaces(d); }); + return result_10; + case 242 /* VariableDeclaration */: + case 191 /* BindingElement */: + case 244 /* FunctionDeclaration */: + case 258 /* ImportSpecifier */: // https://github.com/Microsoft/TypeScript/pull/7591 + case 75 /* Identifier */: // https://github.com/microsoft/TypeScript/issues/36098 + // Identifiers are used as declarations of assignment declarations whose parents may be + // SyntaxKind.CallExpression - `Object.defineProperty(thing, "aField", {value: 42});` + // SyntaxKind.ElementAccessExpression - `thing["aField"] = 42;` or `thing["aField"];` (with a doc comment on it) + // or SyntaxKind.PropertyAccessExpression - `thing.aField = 42;` + // all of which are pretty much always values, or at least imply a value meaning. + // It may be apprpriate to treat these as aliases in the future. + return 1 /* ExportValue */; + default: + return ts.Debug.failBadSyntaxKind(d); + } + } + } + function getAwaitedTypeOfPromise(type, errorNode, diagnosticMessage, arg0) { + var promisedType = getPromisedTypeOfPromise(type, errorNode); + return promisedType && getAwaitedType(promisedType, errorNode, diagnosticMessage, arg0); + } + /** + * Gets the "promised type" of a promise. + * @param type The type of the promise. + * @remarks The "promised type" of a type is the type of the "value" parameter of the "onfulfilled" callback. + */ + function getPromisedTypeOfPromise(type, errorNode) { + // + // { // type + // then( // thenFunction + // onfulfilled: ( // onfulfilledParameterType + // value: T // valueParameterType + // ) => any + // ): any; + // } + // + if (isTypeAny(type)) { + return undefined; + } + var typeAsPromise = type; + if (typeAsPromise.promisedTypeOfPromise) { + return typeAsPromise.promisedTypeOfPromise; + } + if (isReferenceToType(type, getGlobalPromiseType(/*reportErrors*/ false))) { + return typeAsPromise.promisedTypeOfPromise = getTypeArguments(type)[0]; + } + var thenFunction = getTypeOfPropertyOfType(type, "then"); // TODO: GH#18217 + if (isTypeAny(thenFunction)) { + return undefined; + } + var thenSignatures = thenFunction ? getSignaturesOfType(thenFunction, 0 /* Call */) : ts.emptyArray; + if (thenSignatures.length === 0) { + if (errorNode) { + error(errorNode, ts.Diagnostics.A_promise_must_have_a_then_method); + } + return undefined; + } + var onfulfilledParameterType = getTypeWithFacts(getUnionType(ts.map(thenSignatures, getTypeOfFirstParameterOfSignature)), 2097152 /* NEUndefinedOrNull */); + if (isTypeAny(onfulfilledParameterType)) { + return undefined; + } + var onfulfilledParameterSignatures = getSignaturesOfType(onfulfilledParameterType, 0 /* Call */); + if (onfulfilledParameterSignatures.length === 0) { + if (errorNode) { + error(errorNode, ts.Diagnostics.The_first_parameter_of_the_then_method_of_a_promise_must_be_a_callback); + } + return undefined; + } + return typeAsPromise.promisedTypeOfPromise = getUnionType(ts.map(onfulfilledParameterSignatures, getTypeOfFirstParameterOfSignature), 2 /* Subtype */); + } + /** + * Gets the "awaited type" of a type. + * @param type The type to await. + * @remarks The "awaited type" of an expression is its "promised type" if the expression is a + * Promise-like type; otherwise, it is the type of the expression. This is used to reflect + * The runtime behavior of the `await` keyword. + */ + function checkAwaitedType(type, errorNode, diagnosticMessage, arg0) { + var awaitedType = getAwaitedType(type, errorNode, diagnosticMessage, arg0); + return awaitedType || errorType; + } + /** + * Determines whether a type has a callable `then` member. + */ + function isThenableType(type) { + var thenFunction = getTypeOfPropertyOfType(type, "then"); + return !!thenFunction && getSignaturesOfType(getTypeWithFacts(thenFunction, 2097152 /* NEUndefinedOrNull */), 0 /* Call */).length > 0; + } + /** + * Gets the "awaited type" of a type. + * + * The "awaited type" of an expression is its "promised type" if the expression is a + * Promise-like type; otherwise, it is the type of the expression. If the "promised + * type" is itself a Promise-like, the "promised type" is recursively unwrapped until a + * non-promise type is found. + * + * This is used to reflect the runtime behavior of the `await` keyword. + */ + function getAwaitedType(type, errorNode, diagnosticMessage, arg0) { + if (isTypeAny(type)) { + return type; + } + var typeAsAwaitable = type; + if (typeAsAwaitable.awaitedTypeOfType) { + return typeAsAwaitable.awaitedTypeOfType; + } + // For a union, get a union of the awaited types of each constituent. + // + return typeAsAwaitable.awaitedTypeOfType = + mapType(type, errorNode ? function (constituentType) { return getAwaitedTypeWorker(constituentType, errorNode, diagnosticMessage, arg0); } : getAwaitedTypeWorker); + } + function getAwaitedTypeWorker(type, errorNode, diagnosticMessage, arg0) { + var typeAsAwaitable = type; + if (typeAsAwaitable.awaitedTypeOfType) { + return typeAsAwaitable.awaitedTypeOfType; + } + var promisedType = getPromisedTypeOfPromise(type); + if (promisedType) { + if (type.id === promisedType.id || awaitedTypeStack.lastIndexOf(promisedType.id) >= 0) { + // Verify that we don't have a bad actor in the form of a promise whose + // promised type is the same as the promise type, or a mutually recursive + // promise. If so, we return undefined as we cannot guess the shape. If this + // were the actual case in the JavaScript, this Promise would never resolve. + // + // An example of a bad actor with a singly-recursive promise type might + // be: + // + // interface BadPromise { + // then( + // onfulfilled: (value: BadPromise) => any, + // onrejected: (error: any) => any): BadPromise; + // } + // + // The above interface will pass the PromiseLike check, and return a + // promised type of `BadPromise`. Since this is a self reference, we + // don't want to keep recursing ad infinitum. + // + // An example of a bad actor in the form of a mutually-recursive + // promise type might be: + // + // interface BadPromiseA { + // then( + // onfulfilled: (value: BadPromiseB) => any, + // onrejected: (error: any) => any): BadPromiseB; + // } + // + // interface BadPromiseB { + // then( + // onfulfilled: (value: BadPromiseA) => any, + // onrejected: (error: any) => any): BadPromiseA; + // } + // + if (errorNode) { + error(errorNode, ts.Diagnostics.Type_is_referenced_directly_or_indirectly_in_the_fulfillment_callback_of_its_own_then_method); + } + return undefined; + } + // Keep track of the type we're about to unwrap to avoid bad recursive promise types. + // See the comments above for more information. + awaitedTypeStack.push(type.id); + var awaitedType = getAwaitedType(promisedType, errorNode, diagnosticMessage, arg0); + awaitedTypeStack.pop(); + if (!awaitedType) { + return undefined; + } + return typeAsAwaitable.awaitedTypeOfType = awaitedType; + } + // The type was not a promise, so it could not be unwrapped any further. + // As long as the type does not have a callable "then" property, it is + // safe to return the type; otherwise, an error is reported and we return + // undefined. + // + // An example of a non-promise "thenable" might be: + // + // await { then(): void {} } + // + // The "thenable" does not match the minimal definition for a promise. When + // a Promise/A+-compatible or ES6 promise tries to adopt this value, the promise + // will never settle. We treat this as an error to help flag an early indicator + // of a runtime problem. If the user wants to return this value from an async + // function, they would need to wrap it in some other value. If they want it to + // be treated as a promise, they can cast to . + if (isThenableType(type)) { + if (errorNode) { + if (!diagnosticMessage) + return ts.Debug.fail(); + error(errorNode, diagnosticMessage, arg0); + } + return undefined; + } + return typeAsAwaitable.awaitedTypeOfType = type; + } + /** + * Checks the return type of an async function to ensure it is a compatible + * Promise implementation. + * + * This checks that an async function has a valid Promise-compatible return type. + * An async function has a valid Promise-compatible return type if the resolved value + * of the return type has a construct signature that takes in an `initializer` function + * that in turn supplies a `resolve` function as one of its arguments and results in an + * object with a callable `then` signature. + * + * @param node The signature to check + */ + function checkAsyncFunctionReturnType(node, returnTypeNode) { + // As part of our emit for an async function, we will need to emit the entity name of + // the return type annotation as an expression. To meet the necessary runtime semantics + // for __awaiter, we must also check that the type of the declaration (e.g. the static + // side or "constructor" of the promise type) is compatible `PromiseConstructorLike`. + // + // An example might be (from lib.es6.d.ts): + // + // interface Promise { ... } + // interface PromiseConstructor { + // new (...): Promise; + // } + // declare var Promise: PromiseConstructor; + // + // When an async function declares a return type annotation of `Promise`, we + // need to get the type of the `Promise` variable declaration above, which would + // be `PromiseConstructor`. + // + // The same case applies to a class: + // + // declare class Promise { + // constructor(...); + // then(...): Promise; + // } + // + var returnType = getTypeFromTypeNode(returnTypeNode); + if (languageVersion >= 2 /* ES2015 */) { + if (returnType === errorType) { + return; + } + var globalPromiseType = getGlobalPromiseType(/*reportErrors*/ true); + if (globalPromiseType !== emptyGenericType && !isReferenceToType(returnType, globalPromiseType)) { + // The promise type was not a valid type reference to the global promise type, so we + // report an error and return the unknown type. + error(returnTypeNode, ts.Diagnostics.The_return_type_of_an_async_function_or_method_must_be_the_global_Promise_T_type); + return; + } + } + else { + // Always mark the type node as referenced if it points to a value + markTypeNodeAsReferenced(returnTypeNode); + if (returnType === errorType) { + return; + } + var promiseConstructorName = ts.getEntityNameFromTypeNode(returnTypeNode); + if (promiseConstructorName === undefined) { + error(returnTypeNode, ts.Diagnostics.Type_0_is_not_a_valid_async_function_return_type_in_ES5_SlashES3_because_it_does_not_refer_to_a_Promise_compatible_constructor_value, typeToString(returnType)); + return; + } + var promiseConstructorSymbol = resolveEntityName(promiseConstructorName, 111551 /* Value */, /*ignoreErrors*/ true); + var promiseConstructorType = promiseConstructorSymbol ? getTypeOfSymbol(promiseConstructorSymbol) : errorType; + if (promiseConstructorType === errorType) { + if (promiseConstructorName.kind === 75 /* Identifier */ && promiseConstructorName.escapedText === "Promise" && getTargetType(returnType) === getGlobalPromiseType(/*reportErrors*/ false)) { + error(returnTypeNode, ts.Diagnostics.An_async_function_or_method_in_ES5_SlashES3_requires_the_Promise_constructor_Make_sure_you_have_a_declaration_for_the_Promise_constructor_or_include_ES2015_in_your_lib_option); + } + else { + error(returnTypeNode, ts.Diagnostics.Type_0_is_not_a_valid_async_function_return_type_in_ES5_SlashES3_because_it_does_not_refer_to_a_Promise_compatible_constructor_value, ts.entityNameToString(promiseConstructorName)); + } + return; + } + var globalPromiseConstructorLikeType = getGlobalPromiseConstructorLikeType(/*reportErrors*/ true); + if (globalPromiseConstructorLikeType === emptyObjectType) { + // If we couldn't resolve the global PromiseConstructorLike type we cannot verify + // compatibility with __awaiter. + error(returnTypeNode, ts.Diagnostics.Type_0_is_not_a_valid_async_function_return_type_in_ES5_SlashES3_because_it_does_not_refer_to_a_Promise_compatible_constructor_value, ts.entityNameToString(promiseConstructorName)); + return; + } + if (!checkTypeAssignableTo(promiseConstructorType, globalPromiseConstructorLikeType, returnTypeNode, ts.Diagnostics.Type_0_is_not_a_valid_async_function_return_type_in_ES5_SlashES3_because_it_does_not_refer_to_a_Promise_compatible_constructor_value)) { + return; + } + // Verify there is no local declaration that could collide with the promise constructor. + var rootName = promiseConstructorName && ts.getFirstIdentifier(promiseConstructorName); + var collidingSymbol = getSymbol(node.locals, rootName.escapedText, 111551 /* Value */); + if (collidingSymbol) { + error(collidingSymbol.valueDeclaration, ts.Diagnostics.Duplicate_identifier_0_Compiler_uses_declaration_1_to_support_async_functions, ts.idText(rootName), ts.entityNameToString(promiseConstructorName)); + return; + } + } + checkAwaitedType(returnType, node, ts.Diagnostics.The_return_type_of_an_async_function_must_either_be_a_valid_promise_or_must_not_contain_a_callable_then_member); + } + /** Check a decorator */ + function checkDecorator(node) { + var signature = getResolvedSignature(node); + var returnType = getReturnTypeOfSignature(signature); + if (returnType.flags & 1 /* Any */) { + return; + } + var expectedReturnType; + var headMessage = getDiagnosticHeadMessageForDecoratorResolution(node); + var errorInfo; + switch (node.parent.kind) { + case 245 /* ClassDeclaration */: + var classSymbol = getSymbolOfNode(node.parent); + var classConstructorType = getTypeOfSymbol(classSymbol); + expectedReturnType = getUnionType([classConstructorType, voidType]); + break; + case 156 /* Parameter */: + expectedReturnType = voidType; + errorInfo = ts.chainDiagnosticMessages( + /*details*/ undefined, ts.Diagnostics.The_return_type_of_a_parameter_decorator_function_must_be_either_void_or_any); + break; + case 159 /* PropertyDeclaration */: + expectedReturnType = voidType; + errorInfo = ts.chainDiagnosticMessages( + /*details*/ undefined, ts.Diagnostics.The_return_type_of_a_property_decorator_function_must_be_either_void_or_any); + break; + case 161 /* MethodDeclaration */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + var methodType = getTypeOfNode(node.parent); + var descriptorType = createTypedPropertyDescriptorType(methodType); + expectedReturnType = getUnionType([descriptorType, voidType]); + break; + default: + return ts.Debug.fail(); + } + checkTypeAssignableTo(returnType, expectedReturnType, node, headMessage, function () { return errorInfo; }); + } + /** + * If a TypeNode can be resolved to a value symbol imported from an external module, it is + * marked as referenced to prevent import elision. + */ + function markTypeNodeAsReferenced(node) { + markEntityNameOrEntityExpressionAsReference(node && ts.getEntityNameFromTypeNode(node)); + } + function markEntityNameOrEntityExpressionAsReference(typeName) { + if (!typeName) + return; + var rootName = ts.getFirstIdentifier(typeName); + var meaning = (typeName.kind === 75 /* Identifier */ ? 788968 /* Type */ : 1920 /* Namespace */) | 2097152 /* Alias */; + var rootSymbol = resolveName(rootName, rootName.escapedText, meaning, /*nameNotFoundMessage*/ undefined, /*nameArg*/ undefined, /*isRefernce*/ true); + if (rootSymbol + && rootSymbol.flags & 2097152 /* Alias */ + && symbolIsValue(rootSymbol) + && !isConstEnumOrConstEnumOnlyModule(resolveAlias(rootSymbol)) + && !getTypeOnlyAliasDeclaration(rootSymbol)) { + markAliasSymbolAsReferenced(rootSymbol); + } + } + /** + * This function marks the type used for metadata decorator as referenced if it is import + * from external module. + * This is different from markTypeNodeAsReferenced because it tries to simplify type nodes in + * union and intersection type + * @param node + */ + function markDecoratorMedataDataTypeNodeAsReferenced(node) { + var entityName = getEntityNameForDecoratorMetadata(node); + if (entityName && ts.isEntityName(entityName)) { + markEntityNameOrEntityExpressionAsReference(entityName); + } + } + function getEntityNameForDecoratorMetadata(node) { + if (node) { + switch (node.kind) { + case 179 /* IntersectionType */: + case 178 /* UnionType */: + return getEntityNameForDecoratorMetadataFromTypeList(node.types); + case 180 /* ConditionalType */: + return getEntityNameForDecoratorMetadataFromTypeList([node.trueType, node.falseType]); + case 182 /* ParenthesizedType */: + return getEntityNameForDecoratorMetadata(node.type); + case 169 /* TypeReference */: + return node.typeName; + } + } + } + function getEntityNameForDecoratorMetadataFromTypeList(types) { + var commonEntityName; + for (var _i = 0, types_20 = types; _i < types_20.length; _i++) { + var typeNode = types_20[_i]; + while (typeNode.kind === 182 /* ParenthesizedType */) { + typeNode = typeNode.type; // Skip parens if need be + } + if (typeNode.kind === 137 /* NeverKeyword */) { + continue; // Always elide `never` from the union/intersection if possible + } + if (!strictNullChecks && (typeNode.kind === 100 /* NullKeyword */ || typeNode.kind === 146 /* UndefinedKeyword */)) { + continue; // Elide null and undefined from unions for metadata, just like what we did prior to the implementation of strict null checks + } + var individualEntityName = getEntityNameForDecoratorMetadata(typeNode); + if (!individualEntityName) { + // Individual is something like string number + // So it would be serialized to either that type or object + // Safe to return here + return undefined; + } + if (commonEntityName) { + // Note this is in sync with the transformation that happens for type node. + // Keep this in sync with serializeUnionOrIntersectionType + // Verify if they refer to same entity and is identifier + // return undefined if they dont match because we would emit object + if (!ts.isIdentifier(commonEntityName) || + !ts.isIdentifier(individualEntityName) || + commonEntityName.escapedText !== individualEntityName.escapedText) { + return undefined; + } + } + else { + commonEntityName = individualEntityName; + } + } + return commonEntityName; + } + function getParameterTypeNodeForDecoratorCheck(node) { + var typeNode = ts.getEffectiveTypeAnnotationNode(node); + return ts.isRestParameter(node) ? ts.getRestParameterElementType(typeNode) : typeNode; + } + /** Check the decorators of a node */ + function checkDecorators(node) { + if (!node.decorators) { + return; + } + // skip this check for nodes that cannot have decorators. These should have already had an error reported by + // checkGrammarDecorators. + if (!ts.nodeCanBeDecorated(node, node.parent, node.parent.parent)) { + return; + } + if (!compilerOptions.experimentalDecorators) { + error(node, ts.Diagnostics.Experimental_support_for_decorators_is_a_feature_that_is_subject_to_change_in_a_future_release_Set_the_experimentalDecorators_option_in_your_tsconfig_or_jsconfig_to_remove_this_warning); + } + var firstDecorator = node.decorators[0]; + checkExternalEmitHelpers(firstDecorator, 8 /* Decorate */); + if (node.kind === 156 /* Parameter */) { + checkExternalEmitHelpers(firstDecorator, 32 /* Param */); + } + if (compilerOptions.emitDecoratorMetadata) { + checkExternalEmitHelpers(firstDecorator, 16 /* Metadata */); + // we only need to perform these checks if we are emitting serialized type metadata for the target of a decorator. + switch (node.kind) { + case 245 /* ClassDeclaration */: + var constructor = ts.getFirstConstructorWithBody(node); + if (constructor) { + for (var _i = 0, _a = constructor.parameters; _i < _a.length; _i++) { + var parameter = _a[_i]; + markDecoratorMedataDataTypeNodeAsReferenced(getParameterTypeNodeForDecoratorCheck(parameter)); + } + } + break; + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + var otherKind = node.kind === 163 /* GetAccessor */ ? 164 /* SetAccessor */ : 163 /* GetAccessor */; + var otherAccessor = ts.getDeclarationOfKind(getSymbolOfNode(node), otherKind); + markDecoratorMedataDataTypeNodeAsReferenced(getAnnotatedAccessorTypeNode(node) || otherAccessor && getAnnotatedAccessorTypeNode(otherAccessor)); + break; + case 161 /* MethodDeclaration */: + for (var _b = 0, _c = node.parameters; _b < _c.length; _b++) { + var parameter = _c[_b]; + markDecoratorMedataDataTypeNodeAsReferenced(getParameterTypeNodeForDecoratorCheck(parameter)); + } + markDecoratorMedataDataTypeNodeAsReferenced(ts.getEffectiveReturnTypeNode(node)); + break; + case 159 /* PropertyDeclaration */: + markDecoratorMedataDataTypeNodeAsReferenced(ts.getEffectiveTypeAnnotationNode(node)); + break; + case 156 /* Parameter */: + markDecoratorMedataDataTypeNodeAsReferenced(getParameterTypeNodeForDecoratorCheck(node)); + var containingSignature = node.parent; + for (var _d = 0, _e = containingSignature.parameters; _d < _e.length; _d++) { + var parameter = _e[_d]; + markDecoratorMedataDataTypeNodeAsReferenced(getParameterTypeNodeForDecoratorCheck(parameter)); + } + break; + } + } + ts.forEach(node.decorators, checkDecorator); + } + function checkFunctionDeclaration(node) { + if (produceDiagnostics) { + checkFunctionOrMethodDeclaration(node); + checkGrammarForGenerator(node); + checkCollisionWithRequireExportsInGeneratedCode(node, node.name); + checkCollisionWithGlobalPromiseInGeneratedCode(node, node.name); + } + } + function checkJSDocTypeAliasTag(node) { + if (!node.typeExpression) { + // If the node had `@property` tags, `typeExpression` would have been set to the first property tag. + error(node.name, ts.Diagnostics.JSDoc_typedef_tag_should_either_have_a_type_annotation_or_be_followed_by_property_or_member_tags); + } + if (node.name) { + checkTypeNameIsReserved(node.name, ts.Diagnostics.Type_alias_name_cannot_be_0); + } + checkSourceElement(node.typeExpression); + } + function checkJSDocTemplateTag(node) { + checkSourceElement(node.constraint); + for (var _i = 0, _a = node.typeParameters; _i < _a.length; _i++) { + var tp = _a[_i]; + checkSourceElement(tp); + } + } + function checkJSDocTypeTag(node) { + checkSourceElement(node.typeExpression); + } + function checkJSDocParameterTag(node) { + checkSourceElement(node.typeExpression); + if (!ts.getParameterSymbolFromJSDoc(node)) { + var decl = ts.getHostSignatureFromJSDoc(node); + // don't issue an error for invalid hosts -- just functions -- + // and give a better error message when the host function mentions `arguments` + // but the tag doesn't have an array type + if (decl) { + var i = ts.getJSDocTags(decl).filter(ts.isJSDocParameterTag).indexOf(node); + if (i > -1 && i < decl.parameters.length && ts.isBindingPattern(decl.parameters[i].name)) { + return; + } + if (!containsArgumentsReference(decl)) { + if (ts.isQualifiedName(node.name)) { + error(node.name, ts.Diagnostics.Qualified_name_0_is_not_allowed_without_a_leading_param_object_1, ts.entityNameToString(node.name), ts.entityNameToString(node.name.left)); + } + else { + error(node.name, ts.Diagnostics.JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name, ts.idText(node.name)); + } + } + else if (ts.findLast(ts.getJSDocTags(decl), ts.isJSDocParameterTag) === node && + node.typeExpression && node.typeExpression.type && + !isArrayType(getTypeFromTypeNode(node.typeExpression.type))) { + error(node.name, ts.Diagnostics.JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_It_would_match_arguments_if_it_had_an_array_type, ts.idText(node.name.kind === 153 /* QualifiedName */ ? node.name.right : node.name)); + } + } + } + } + function checkJSDocPropertyTag(node) { + checkSourceElement(node.typeExpression); + } + function checkJSDocFunctionType(node) { + if (produceDiagnostics && !node.type && !ts.isJSDocConstructSignature(node)) { + reportImplicitAny(node, anyType); + } + checkSignatureDeclaration(node); + } + function checkJSDocImplementsTag(node) { + var classLike = ts.getEffectiveJSDocHost(node); + if (!classLike || !ts.isClassDeclaration(classLike) && !ts.isClassExpression(classLike)) { + error(classLike, ts.Diagnostics.JSDoc_0_is_not_attached_to_a_class, ts.idText(node.tagName)); + } + } + function checkJSDocAugmentsTag(node) { + var classLike = ts.getEffectiveJSDocHost(node); + if (!classLike || !ts.isClassDeclaration(classLike) && !ts.isClassExpression(classLike)) { + error(classLike, ts.Diagnostics.JSDoc_0_is_not_attached_to_a_class, ts.idText(node.tagName)); + return; + } + var augmentsTags = ts.getJSDocTags(classLike).filter(ts.isJSDocAugmentsTag); + ts.Debug.assert(augmentsTags.length > 0); + if (augmentsTags.length > 1) { + error(augmentsTags[1], ts.Diagnostics.Class_declarations_cannot_have_more_than_one_augments_or_extends_tag); + } + var name = getIdentifierFromEntityNameExpression(node.class.expression); + var extend = ts.getClassExtendsHeritageElement(classLike); + if (extend) { + var className = getIdentifierFromEntityNameExpression(extend.expression); + if (className && name.escapedText !== className.escapedText) { + error(name, ts.Diagnostics.JSDoc_0_1_does_not_match_the_extends_2_clause, ts.idText(node.tagName), ts.idText(name), ts.idText(className)); + } + } + } + function getIdentifierFromEntityNameExpression(node) { + switch (node.kind) { + case 75 /* Identifier */: + return node; + case 194 /* PropertyAccessExpression */: + return node.name; + default: + return undefined; + } + } + function checkFunctionOrMethodDeclaration(node) { + checkDecorators(node); + checkSignatureDeclaration(node); + var functionFlags = ts.getFunctionFlags(node); + // Do not use hasDynamicName here, because that returns false for well known symbols. + // We want to perform checkComputedPropertyName for all computed properties, including + // well known symbols. + if (node.name && node.name.kind === 154 /* ComputedPropertyName */) { + // This check will account for methods in class/interface declarations, + // as well as accessors in classes/object literals + checkComputedPropertyName(node.name); + } + if (!hasNonBindableDynamicName(node)) { + // first we want to check the local symbol that contain this declaration + // - if node.localSymbol !== undefined - this is current declaration is exported and localSymbol points to the local symbol + // - if node.localSymbol === undefined - this node is non-exported so we can just pick the result of getSymbolOfNode + var symbol = getSymbolOfNode(node); + var localSymbol = node.localSymbol || symbol; + // Since the javascript won't do semantic analysis like typescript, + // if the javascript file comes before the typescript file and both contain same name functions, + // checkFunctionOrConstructorSymbol wouldn't be called if we didnt ignore javascript function. + var firstDeclaration = ts.find(localSymbol.declarations, + // Get first non javascript function declaration + function (declaration) { return declaration.kind === node.kind && !(declaration.flags & 131072 /* JavaScriptFile */); }); + // Only type check the symbol once + if (node === firstDeclaration) { + checkFunctionOrConstructorSymbol(localSymbol); + } + if (symbol.parent) { + // run check once for the first declaration + if (ts.getDeclarationOfKind(symbol, node.kind) === node) { + // run check on export symbol to check that modifiers agree across all exported declarations + checkFunctionOrConstructorSymbol(symbol); + } + } + } + var body = node.kind === 160 /* MethodSignature */ ? undefined : node.body; + checkSourceElement(body); + checkAllCodePathsInNonVoidFunctionReturnOrThrow(node, getReturnTypeFromAnnotation(node)); + if (produceDiagnostics && !ts.getEffectiveReturnTypeNode(node)) { + // Report an implicit any error if there is no body, no explicit return type, and node is not a private method + // in an ambient context + if (ts.nodeIsMissing(body) && !isPrivateWithinAmbient(node)) { + reportImplicitAny(node, anyType); + } + if (functionFlags & 1 /* Generator */ && ts.nodeIsPresent(body)) { + // A generator with a body and no type annotation can still cause errors. It can error if the + // yielded values have no common supertype, or it can give an implicit any error if it has no + // yielded values. The only way to trigger these errors is to try checking its return type. + getReturnTypeOfSignature(getSignatureFromDeclaration(node)); + } + } + // A js function declaration can have a @type tag instead of a return type node, but that type must have a call signature + if (ts.isInJSFile(node)) { + var typeTag = ts.getJSDocTypeTag(node); + if (typeTag && typeTag.typeExpression && !getContextualCallSignature(getTypeFromTypeNode(typeTag.typeExpression), node)) { + error(typeTag, ts.Diagnostics.The_type_of_a_function_declaration_must_match_the_function_s_signature); + } + } + } + function registerForUnusedIdentifiersCheck(node) { + // May be in a call such as getTypeOfNode that happened to call this. But potentiallyUnusedIdentifiers is only defined in the scope of `checkSourceFile`. + if (produceDiagnostics) { + var sourceFile = ts.getSourceFileOfNode(node); + var potentiallyUnusedIdentifiers = allPotentiallyUnusedIdentifiers.get(sourceFile.path); + if (!potentiallyUnusedIdentifiers) { + potentiallyUnusedIdentifiers = []; + allPotentiallyUnusedIdentifiers.set(sourceFile.path, potentiallyUnusedIdentifiers); + } + // TODO: GH#22580 + // Debug.assert(addToSeen(seenPotentiallyUnusedIdentifiers, getNodeId(node)), "Adding potentially-unused identifier twice"); + potentiallyUnusedIdentifiers.push(node); + } + } + function checkUnusedIdentifiers(potentiallyUnusedIdentifiers, addDiagnostic) { + for (var _i = 0, potentiallyUnusedIdentifiers_1 = potentiallyUnusedIdentifiers; _i < potentiallyUnusedIdentifiers_1.length; _i++) { + var node = potentiallyUnusedIdentifiers_1[_i]; + switch (node.kind) { + case 245 /* ClassDeclaration */: + case 214 /* ClassExpression */: + checkUnusedClassMembers(node, addDiagnostic); + checkUnusedTypeParameters(node, addDiagnostic); + break; + case 290 /* SourceFile */: + case 249 /* ModuleDeclaration */: + case 223 /* Block */: + case 251 /* CaseBlock */: + case 230 /* ForStatement */: + case 231 /* ForInStatement */: + case 232 /* ForOfStatement */: + checkUnusedLocalsAndParameters(node, addDiagnostic); + break; + case 162 /* Constructor */: + case 201 /* FunctionExpression */: + case 244 /* FunctionDeclaration */: + case 202 /* ArrowFunction */: + case 161 /* MethodDeclaration */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + if (node.body) { // Don't report unused parameters in overloads + checkUnusedLocalsAndParameters(node, addDiagnostic); + } + checkUnusedTypeParameters(node, addDiagnostic); + break; + case 160 /* MethodSignature */: + case 165 /* CallSignature */: + case 166 /* ConstructSignature */: + case 170 /* FunctionType */: + case 171 /* ConstructorType */: + case 247 /* TypeAliasDeclaration */: + case 246 /* InterfaceDeclaration */: + checkUnusedTypeParameters(node, addDiagnostic); + break; + case 181 /* InferType */: + checkUnusedInferTypeParameter(node, addDiagnostic); + break; + default: + ts.Debug.assertNever(node, "Node should not have been registered for unused identifiers check"); + } + } + } + function errorUnusedLocal(declaration, name, addDiagnostic) { + var node = ts.getNameOfDeclaration(declaration) || declaration; + var message = isTypeDeclaration(declaration) ? ts.Diagnostics._0_is_declared_but_never_used : ts.Diagnostics._0_is_declared_but_its_value_is_never_read; + addDiagnostic(declaration, 0 /* Local */, ts.createDiagnosticForNode(node, message, name)); + } + function isIdentifierThatStartsWithUnderscore(node) { + return ts.isIdentifier(node) && ts.idText(node).charCodeAt(0) === 95 /* _ */; + } + function checkUnusedClassMembers(node, addDiagnostic) { + for (var _i = 0, _a = node.members; _i < _a.length; _i++) { + var member = _a[_i]; + switch (member.kind) { + case 161 /* MethodDeclaration */: + case 159 /* PropertyDeclaration */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + if (member.kind === 164 /* SetAccessor */ && member.symbol.flags & 32768 /* GetAccessor */) { + // Already would have reported an error on the getter. + break; + } + var symbol = getSymbolOfNode(member); + if (!symbol.isReferenced + && (ts.hasModifier(member, 8 /* Private */) || ts.isNamedDeclaration(member) && ts.isPrivateIdentifier(member.name)) + && !(member.flags & 8388608 /* Ambient */)) { + addDiagnostic(member, 0 /* Local */, ts.createDiagnosticForNode(member.name, ts.Diagnostics._0_is_declared_but_its_value_is_never_read, symbolToString(symbol))); + } + break; + case 162 /* Constructor */: + for (var _b = 0, _c = member.parameters; _b < _c.length; _b++) { + var parameter = _c[_b]; + if (!parameter.symbol.isReferenced && ts.hasModifier(parameter, 8 /* Private */)) { + addDiagnostic(parameter, 0 /* Local */, ts.createDiagnosticForNode(parameter.name, ts.Diagnostics.Property_0_is_declared_but_its_value_is_never_read, ts.symbolName(parameter.symbol))); + } + } + break; + case 167 /* IndexSignature */: + case 222 /* SemicolonClassElement */: + // Can't be private + break; + default: + ts.Debug.fail(); + } + } + } + function checkUnusedInferTypeParameter(node, addDiagnostic) { + var typeParameter = node.typeParameter; + if (isTypeParameterUnused(typeParameter)) { + addDiagnostic(node, 1 /* Parameter */, ts.createDiagnosticForNode(node, ts.Diagnostics._0_is_declared_but_its_value_is_never_read, ts.idText(typeParameter.name))); + } + } + function checkUnusedTypeParameters(node, addDiagnostic) { + // Only report errors on the last declaration for the type parameter container; + // this ensures that all uses have been accounted for. + if (ts.last(getSymbolOfNode(node).declarations) !== node) + return; + var typeParameters = ts.getEffectiveTypeParameterDeclarations(node); + var seenParentsWithEveryUnused = new ts.NodeSet(); + for (var _i = 0, typeParameters_3 = typeParameters; _i < typeParameters_3.length; _i++) { + var typeParameter = typeParameters_3[_i]; + if (!isTypeParameterUnused(typeParameter)) + continue; + var name = ts.idText(typeParameter.name); + var parent = typeParameter.parent; + if (parent.kind !== 181 /* InferType */ && parent.typeParameters.every(isTypeParameterUnused)) { + if (seenParentsWithEveryUnused.tryAdd(parent)) { + var range = ts.isJSDocTemplateTag(parent) + // Whole @template tag + ? ts.rangeOfNode(parent) + // Include the `<>` in the error message + : ts.rangeOfTypeParameters(parent.typeParameters); + var only = parent.typeParameters.length === 1; + var message = only ? ts.Diagnostics._0_is_declared_but_its_value_is_never_read : ts.Diagnostics.All_type_parameters_are_unused; + var arg0 = only ? name : undefined; + addDiagnostic(typeParameter, 1 /* Parameter */, ts.createFileDiagnostic(ts.getSourceFileOfNode(parent), range.pos, range.end - range.pos, message, arg0)); + } + } + else { + addDiagnostic(typeParameter, 1 /* Parameter */, ts.createDiagnosticForNode(typeParameter, ts.Diagnostics._0_is_declared_but_its_value_is_never_read, name)); + } + } + } + function isTypeParameterUnused(typeParameter) { + return !(getMergedSymbol(typeParameter.symbol).isReferenced & 262144 /* TypeParameter */) && !isIdentifierThatStartsWithUnderscore(typeParameter.name); + } + function addToGroup(map, key, value, getKey) { + var keyString = String(getKey(key)); + var group = map.get(keyString); + if (group) { + group[1].push(value); + } + else { + map.set(keyString, [key, [value]]); + } + } + function tryGetRootParameterDeclaration(node) { + return ts.tryCast(ts.getRootDeclaration(node), ts.isParameter); + } + function isValidUnusedLocalDeclaration(declaration) { + if (ts.isBindingElement(declaration) && isIdentifierThatStartsWithUnderscore(declaration.name)) { + return !!ts.findAncestor(declaration.parent, function (ancestor) { + return ts.isArrayBindingPattern(ancestor) || ts.isVariableDeclaration(ancestor) || ts.isVariableDeclarationList(ancestor) ? false : + ts.isForOfStatement(ancestor) ? true : "quit"; + }); + } + return ts.isAmbientModule(declaration) || + (ts.isVariableDeclaration(declaration) && ts.isForInOrOfStatement(declaration.parent.parent) || isImportedDeclaration(declaration)) && isIdentifierThatStartsWithUnderscore(declaration.name); + } + function checkUnusedLocalsAndParameters(nodeWithLocals, addDiagnostic) { + // Ideally we could use the ImportClause directly as a key, but must wait until we have full ES6 maps. So must store key along with value. + var unusedImports = ts.createMap(); + var unusedDestructures = ts.createMap(); + var unusedVariables = ts.createMap(); + nodeWithLocals.locals.forEach(function (local) { + // If it's purely a type parameter, ignore, will be checked in `checkUnusedTypeParameters`. + // If it's a type parameter merged with a parameter, check if the parameter-side is used. + if (local.flags & 262144 /* TypeParameter */ ? !(local.flags & 3 /* Variable */ && !(local.isReferenced & 3 /* Variable */)) : local.isReferenced || local.exportSymbol) { + return; + } + for (var _i = 0, _a = local.declarations; _i < _a.length; _i++) { + var declaration = _a[_i]; + if (isValidUnusedLocalDeclaration(declaration)) { + continue; + } + if (isImportedDeclaration(declaration)) { + addToGroup(unusedImports, importClauseFromImported(declaration), declaration, getNodeId); + } + else if (ts.isBindingElement(declaration) && ts.isObjectBindingPattern(declaration.parent)) { + // In `{ a, ...b }, `a` is considered used since it removes a property from `b`. `b` may still be unused though. + var lastElement = ts.last(declaration.parent.elements); + if (declaration === lastElement || !ts.last(declaration.parent.elements).dotDotDotToken) { + addToGroup(unusedDestructures, declaration.parent, declaration, getNodeId); + } + } + else if (ts.isVariableDeclaration(declaration)) { + addToGroup(unusedVariables, declaration.parent, declaration, getNodeId); + } + else { + var parameter = local.valueDeclaration && tryGetRootParameterDeclaration(local.valueDeclaration); + var name = local.valueDeclaration && ts.getNameOfDeclaration(local.valueDeclaration); + if (parameter && name) { + if (!ts.isParameterPropertyDeclaration(parameter, parameter.parent) && !ts.parameterIsThisKeyword(parameter) && !isIdentifierThatStartsWithUnderscore(name)) { + addDiagnostic(parameter, 1 /* Parameter */, ts.createDiagnosticForNode(name, ts.Diagnostics._0_is_declared_but_its_value_is_never_read, ts.symbolName(local))); + } + } + else { + errorUnusedLocal(declaration, ts.symbolName(local), addDiagnostic); + } + } + } + }); + unusedImports.forEach(function (_a) { + var importClause = _a[0], unuseds = _a[1]; + var importDecl = importClause.parent; + var nDeclarations = (importClause.name ? 1 : 0) + + (importClause.namedBindings ? + (importClause.namedBindings.kind === 256 /* NamespaceImport */ ? 1 : importClause.namedBindings.elements.length) + : 0); + if (nDeclarations === unuseds.length) { + addDiagnostic(importDecl, 0 /* Local */, unuseds.length === 1 + ? ts.createDiagnosticForNode(importDecl, ts.Diagnostics._0_is_declared_but_its_value_is_never_read, ts.idText(ts.first(unuseds).name)) + : ts.createDiagnosticForNode(importDecl, ts.Diagnostics.All_imports_in_import_declaration_are_unused)); + } + else { + for (var _i = 0, unuseds_1 = unuseds; _i < unuseds_1.length; _i++) { + var unused = unuseds_1[_i]; + errorUnusedLocal(unused, ts.idText(unused.name), addDiagnostic); + } + } + }); + unusedDestructures.forEach(function (_a) { + var bindingPattern = _a[0], bindingElements = _a[1]; + var kind = tryGetRootParameterDeclaration(bindingPattern.parent) ? 1 /* Parameter */ : 0 /* Local */; + if (bindingPattern.elements.length === bindingElements.length) { + if (bindingElements.length === 1 && bindingPattern.parent.kind === 242 /* VariableDeclaration */ && bindingPattern.parent.parent.kind === 243 /* VariableDeclarationList */) { + addToGroup(unusedVariables, bindingPattern.parent.parent, bindingPattern.parent, getNodeId); + } + else { + addDiagnostic(bindingPattern, kind, bindingElements.length === 1 + ? ts.createDiagnosticForNode(bindingPattern, ts.Diagnostics._0_is_declared_but_its_value_is_never_read, bindingNameText(ts.first(bindingElements).name)) + : ts.createDiagnosticForNode(bindingPattern, ts.Diagnostics.All_destructured_elements_are_unused)); + } + } + else { + for (var _i = 0, bindingElements_1 = bindingElements; _i < bindingElements_1.length; _i++) { + var e = bindingElements_1[_i]; + addDiagnostic(e, kind, ts.createDiagnosticForNode(e, ts.Diagnostics._0_is_declared_but_its_value_is_never_read, bindingNameText(e.name))); + } + } + }); + unusedVariables.forEach(function (_a) { + var declarationList = _a[0], declarations = _a[1]; + if (declarationList.declarations.length === declarations.length) { + addDiagnostic(declarationList, 0 /* Local */, declarations.length === 1 + ? ts.createDiagnosticForNode(ts.first(declarations).name, ts.Diagnostics._0_is_declared_but_its_value_is_never_read, bindingNameText(ts.first(declarations).name)) + : ts.createDiagnosticForNode(declarationList.parent.kind === 225 /* VariableStatement */ ? declarationList.parent : declarationList, ts.Diagnostics.All_variables_are_unused)); + } + else { + for (var _i = 0, declarations_5 = declarations; _i < declarations_5.length; _i++) { + var decl = declarations_5[_i]; + addDiagnostic(decl, 0 /* Local */, ts.createDiagnosticForNode(decl, ts.Diagnostics._0_is_declared_but_its_value_is_never_read, bindingNameText(decl.name))); + } + } + }); + } + function bindingNameText(name) { + switch (name.kind) { + case 75 /* Identifier */: + return ts.idText(name); + case 190 /* ArrayBindingPattern */: + case 189 /* ObjectBindingPattern */: + return bindingNameText(ts.cast(ts.first(name.elements), ts.isBindingElement).name); + default: + return ts.Debug.assertNever(name); + } + } + function isImportedDeclaration(node) { + return node.kind === 255 /* ImportClause */ || node.kind === 258 /* ImportSpecifier */ || node.kind === 256 /* NamespaceImport */; + } + function importClauseFromImported(decl) { + return decl.kind === 255 /* ImportClause */ ? decl : decl.kind === 256 /* NamespaceImport */ ? decl.parent : decl.parent.parent; + } + function checkBlock(node) { + // Grammar checking for SyntaxKind.Block + if (node.kind === 223 /* Block */) { + checkGrammarStatementInAmbientContext(node); + } + if (ts.isFunctionOrModuleBlock(node)) { + var saveFlowAnalysisDisabled = flowAnalysisDisabled; + ts.forEach(node.statements, checkSourceElement); + flowAnalysisDisabled = saveFlowAnalysisDisabled; + } + else { + ts.forEach(node.statements, checkSourceElement); + } + if (node.locals) { + registerForUnusedIdentifiersCheck(node); + } + } + function checkCollisionWithArgumentsInGeneratedCode(node) { + // no rest parameters \ declaration context \ overload - no codegen impact + if (languageVersion >= 2 /* ES2015 */ || compilerOptions.noEmit || !ts.hasRestParameter(node) || node.flags & 8388608 /* Ambient */ || ts.nodeIsMissing(node.body)) { + return; + } + ts.forEach(node.parameters, function (p) { + if (p.name && !ts.isBindingPattern(p.name) && p.name.escapedText === argumentsSymbol.escapedName) { + error(p, ts.Diagnostics.Duplicate_identifier_arguments_Compiler_uses_arguments_to_initialize_rest_parameters); + } + }); + } + function needCollisionCheckForIdentifier(node, identifier, name) { + if (!(identifier && identifier.escapedText === name)) { + return false; + } + if (node.kind === 159 /* PropertyDeclaration */ || + node.kind === 158 /* PropertySignature */ || + node.kind === 161 /* MethodDeclaration */ || + node.kind === 160 /* MethodSignature */ || + node.kind === 163 /* GetAccessor */ || + node.kind === 164 /* SetAccessor */) { + // it is ok to have member named '_super' or '_this' - member access is always qualified + return false; + } + if (node.flags & 8388608 /* Ambient */) { + // ambient context - no codegen impact + return false; + } + var root = ts.getRootDeclaration(node); + if (root.kind === 156 /* Parameter */ && ts.nodeIsMissing(root.parent.body)) { + // just an overload - no codegen impact + return false; + } + return true; + } + // this function will run after checking the source file so 'CaptureThis' is correct for all nodes + function checkIfThisIsCapturedInEnclosingScope(node) { + ts.findAncestor(node, function (current) { + if (getNodeCheckFlags(current) & 4 /* CaptureThis */) { + var isDeclaration_1 = node.kind !== 75 /* Identifier */; + if (isDeclaration_1) { + error(ts.getNameOfDeclaration(node), ts.Diagnostics.Duplicate_identifier_this_Compiler_uses_variable_declaration_this_to_capture_this_reference); + } + else { + error(node, ts.Diagnostics.Expression_resolves_to_variable_declaration_this_that_compiler_uses_to_capture_this_reference); + } + return true; + } + return false; + }); + } + function checkIfNewTargetIsCapturedInEnclosingScope(node) { + ts.findAncestor(node, function (current) { + if (getNodeCheckFlags(current) & 8 /* CaptureNewTarget */) { + var isDeclaration_2 = node.kind !== 75 /* Identifier */; + if (isDeclaration_2) { + error(ts.getNameOfDeclaration(node), ts.Diagnostics.Duplicate_identifier_newTarget_Compiler_uses_variable_declaration_newTarget_to_capture_new_target_meta_property_reference); + } + else { + error(node, ts.Diagnostics.Expression_resolves_to_variable_declaration_newTarget_that_compiler_uses_to_capture_new_target_meta_property_reference); + } + return true; + } + return false; + }); + } + function checkWeakMapCollision(node) { + var enclosingBlockScope = ts.getEnclosingBlockScopeContainer(node); + if (getNodeCheckFlags(enclosingBlockScope) & 67108864 /* ContainsClassWithPrivateIdentifiers */) { + error(node, ts.Diagnostics.Compiler_reserves_name_0_when_emitting_private_identifier_downlevel, "WeakMap"); + } + } + function checkCollisionWithRequireExportsInGeneratedCode(node, name) { + // No need to check for require or exports for ES6 modules and later + if (moduleKind >= ts.ModuleKind.ES2015 || compilerOptions.noEmit) { + return; + } + if (!needCollisionCheckForIdentifier(node, name, "require") && !needCollisionCheckForIdentifier(node, name, "exports")) { + return; + } + // Uninstantiated modules shouldnt do this check + if (ts.isModuleDeclaration(node) && ts.getModuleInstanceState(node) !== 1 /* Instantiated */) { + return; + } + // In case of variable declaration, node.parent is variable statement so look at the variable statement's parent + var parent = getDeclarationContainer(node); + if (parent.kind === 290 /* SourceFile */ && ts.isExternalOrCommonJsModule(parent)) { + // If the declaration happens to be in external module, report error that require and exports are reserved keywords + error(name, ts.Diagnostics.Duplicate_identifier_0_Compiler_reserves_name_1_in_top_level_scope_of_a_module, ts.declarationNameToString(name), ts.declarationNameToString(name)); + } + } + function checkCollisionWithGlobalPromiseInGeneratedCode(node, name) { + if (languageVersion >= 4 /* ES2017 */ || compilerOptions.noEmit || !needCollisionCheckForIdentifier(node, name, "Promise")) { + return; + } + // Uninstantiated modules shouldnt do this check + if (ts.isModuleDeclaration(node) && ts.getModuleInstanceState(node) !== 1 /* Instantiated */) { + return; + } + // In case of variable declaration, node.parent is variable statement so look at the variable statement's parent + var parent = getDeclarationContainer(node); + if (parent.kind === 290 /* SourceFile */ && ts.isExternalOrCommonJsModule(parent) && parent.flags & 2048 /* HasAsyncFunctions */) { + // If the declaration happens to be in external module, report error that Promise is a reserved identifier. + error(name, ts.Diagnostics.Duplicate_identifier_0_Compiler_reserves_name_1_in_top_level_scope_of_a_module_containing_async_functions, ts.declarationNameToString(name), ts.declarationNameToString(name)); + } + } + function checkVarDeclaredNamesNotShadowed(node) { + // - ScriptBody : StatementList + // It is a Syntax Error if any element of the LexicallyDeclaredNames of StatementList + // also occurs in the VarDeclaredNames of StatementList. + // - Block : { StatementList } + // It is a Syntax Error if any element of the LexicallyDeclaredNames of StatementList + // also occurs in the VarDeclaredNames of StatementList. + // Variable declarations are hoisted to the top of their function scope. They can shadow + // block scoped declarations, which bind tighter. this will not be flagged as duplicate definition + // by the binder as the declaration scope is different. + // A non-initialized declaration is a no-op as the block declaration will resolve before the var + // declaration. the problem is if the declaration has an initializer. this will act as a write to the + // block declared value. this is fine for let, but not const. + // Only consider declarations with initializers, uninitialized const declarations will not + // step on a let/const variable. + // Do not consider const and const declarations, as duplicate block-scoped declarations + // are handled by the binder. + // We are only looking for const declarations that step on let\const declarations from a + // different scope. e.g.: + // { + // const x = 0; // localDeclarationSymbol obtained after name resolution will correspond to this declaration + // const x = 0; // symbol for this declaration will be 'symbol' + // } + // skip block-scoped variables and parameters + if ((ts.getCombinedNodeFlags(node) & 3 /* BlockScoped */) !== 0 || ts.isParameterDeclaration(node)) { + return; + } + // skip variable declarations that don't have initializers + // NOTE: in ES6 spec initializer is required in variable declarations where name is binding pattern + // so we'll always treat binding elements as initialized + if (node.kind === 242 /* VariableDeclaration */ && !node.initializer) { + return; + } + var symbol = getSymbolOfNode(node); + if (symbol.flags & 1 /* FunctionScopedVariable */) { + if (!ts.isIdentifier(node.name)) + return ts.Debug.fail(); + var localDeclarationSymbol = resolveName(node, node.name.escapedText, 3 /* Variable */, /*nodeNotFoundErrorMessage*/ undefined, /*nameArg*/ undefined, /*isUse*/ false); + if (localDeclarationSymbol && + localDeclarationSymbol !== symbol && + localDeclarationSymbol.flags & 2 /* BlockScopedVariable */) { + if (getDeclarationNodeFlagsFromSymbol(localDeclarationSymbol) & 3 /* BlockScoped */) { + var varDeclList = ts.getAncestor(localDeclarationSymbol.valueDeclaration, 243 /* VariableDeclarationList */); + var container = varDeclList.parent.kind === 225 /* VariableStatement */ && varDeclList.parent.parent + ? varDeclList.parent.parent + : undefined; + // names of block-scoped and function scoped variables can collide only + // if block scoped variable is defined in the function\module\source file scope (because of variable hoisting) + var namesShareScope = container && + (container.kind === 223 /* Block */ && ts.isFunctionLike(container.parent) || + container.kind === 250 /* ModuleBlock */ || + container.kind === 249 /* ModuleDeclaration */ || + container.kind === 290 /* SourceFile */); + // here we know that function scoped variable is shadowed by block scoped one + // if they are defined in the same scope - binder has already reported redeclaration error + // otherwise if variable has an initializer - show error that initialization will fail + // since LHS will be block scoped name instead of function scoped + if (!namesShareScope) { + var name = symbolToString(localDeclarationSymbol); + error(node, ts.Diagnostics.Cannot_initialize_outer_scoped_variable_0_in_the_same_scope_as_block_scoped_declaration_1, name, name); + } + } + } + } + } + function convertAutoToAny(type) { + return type === autoType ? anyType : type === autoArrayType ? anyArrayType : type; + } + // Check variable, parameter, or property declaration + function checkVariableLikeDeclaration(node) { + checkDecorators(node); + if (!ts.isBindingElement(node)) { + checkSourceElement(node.type); + } + // JSDoc `function(string, string): string` syntax results in parameters with no name + if (!node.name) { + return; + } + // For a computed property, just check the initializer and exit + // Do not use hasDynamicName here, because that returns false for well known symbols. + // We want to perform checkComputedPropertyName for all computed properties, including + // well known symbols. + if (node.name.kind === 154 /* ComputedPropertyName */) { + checkComputedPropertyName(node.name); + if (node.initializer) { + checkExpressionCached(node.initializer); + } + } + if (node.kind === 191 /* BindingElement */) { + if (node.parent.kind === 189 /* ObjectBindingPattern */ && languageVersion < 99 /* ESNext */) { + checkExternalEmitHelpers(node, 4 /* Rest */); + } + // check computed properties inside property names of binding elements + if (node.propertyName && node.propertyName.kind === 154 /* ComputedPropertyName */) { + checkComputedPropertyName(node.propertyName); + } + // check private/protected variable access + var parent = node.parent.parent; + var parentType = getTypeForBindingElementParent(parent); + var name = node.propertyName || node.name; + if (parentType && !ts.isBindingPattern(name)) { + var exprType = getLiteralTypeFromPropertyName(name); + if (isTypeUsableAsPropertyName(exprType)) { + var nameText = getPropertyNameFromType(exprType); + var property = getPropertyOfType(parentType, nameText); + if (property) { + markPropertyAsReferenced(property, /*nodeForCheckWriteOnly*/ undefined, /*isThisAccess*/ false); // A destructuring is never a write-only reference. + checkPropertyAccessibility(parent, !!parent.initializer && parent.initializer.kind === 102 /* SuperKeyword */, parentType, property); + } + } + } + } + // For a binding pattern, check contained binding elements + if (ts.isBindingPattern(node.name)) { + if (node.name.kind === 190 /* ArrayBindingPattern */ && languageVersion < 2 /* ES2015 */ && compilerOptions.downlevelIteration) { + checkExternalEmitHelpers(node, 512 /* Read */); + } + ts.forEach(node.name.elements, checkSourceElement); + } + // For a parameter declaration with an initializer, error and exit if the containing function doesn't have a body + if (node.initializer && ts.getRootDeclaration(node).kind === 156 /* Parameter */ && ts.nodeIsMissing(ts.getContainingFunction(node).body)) { + error(node, ts.Diagnostics.A_parameter_initializer_is_only_allowed_in_a_function_or_constructor_implementation); + return; + } + // For a binding pattern, validate the initializer and exit + if (ts.isBindingPattern(node.name)) { + var needCheckInitializer = node.initializer && node.parent.parent.kind !== 231 /* ForInStatement */; + var needCheckWidenedType = node.name.elements.length === 0; + if (needCheckInitializer || needCheckWidenedType) { + // Don't validate for-in initializer as it is already an error + var widenedType = getWidenedTypeForVariableLikeDeclaration(node); + if (needCheckInitializer) { + var initializerType = checkExpressionCached(node.initializer); + if (strictNullChecks && needCheckWidenedType) { + checkNonNullNonVoidType(initializerType, node); + } + else { + checkTypeAssignableToAndOptionallyElaborate(initializerType, getWidenedTypeForVariableLikeDeclaration(node), node, node.initializer); + } + } + // check the binding pattern with empty elements + if (needCheckWidenedType) { + if (ts.isArrayBindingPattern(node.name)) { + checkIteratedTypeOrElementType(65 /* Destructuring */, widenedType, undefinedType, node); + } + else if (strictNullChecks) { + checkNonNullNonVoidType(widenedType, node); + } + } + } + return; + } + var symbol = getSymbolOfNode(node); + var type = convertAutoToAny(getTypeOfSymbol(symbol)); + if (node === symbol.valueDeclaration) { + // Node is the primary declaration of the symbol, just validate the initializer + // Don't validate for-in initializer as it is already an error + var initializer = ts.getEffectiveInitializer(node); + if (initializer) { + var isJSObjectLiteralInitializer = ts.isInJSFile(node) && + ts.isObjectLiteralExpression(initializer) && + (initializer.properties.length === 0 || ts.isPrototypeAccess(node.name)) && + ts.hasEntries(symbol.exports); + if (!isJSObjectLiteralInitializer && node.parent.parent.kind !== 231 /* ForInStatement */) { + checkTypeAssignableToAndOptionallyElaborate(checkExpressionCached(initializer), type, node, initializer, /*headMessage*/ undefined); + } + } + if (symbol.declarations.length > 1) { + if (ts.some(symbol.declarations, function (d) { return d !== node && ts.isVariableLike(d) && !areDeclarationFlagsIdentical(d, node); })) { + error(node.name, ts.Diagnostics.All_declarations_of_0_must_have_identical_modifiers, ts.declarationNameToString(node.name)); + } + } + } + else { + // Node is a secondary declaration, check that type is identical to primary declaration and check that + // initializer is consistent with type associated with the node + var declarationType = convertAutoToAny(getWidenedTypeForVariableLikeDeclaration(node)); + if (type !== errorType && declarationType !== errorType && + !isTypeIdenticalTo(type, declarationType) && + !(symbol.flags & 67108864 /* Assignment */)) { + errorNextVariableOrPropertyDeclarationMustHaveSameType(symbol.valueDeclaration, type, node, declarationType); + } + if (node.initializer) { + checkTypeAssignableToAndOptionallyElaborate(checkExpressionCached(node.initializer), declarationType, node, node.initializer, /*headMessage*/ undefined); + } + if (!areDeclarationFlagsIdentical(node, symbol.valueDeclaration)) { + error(node.name, ts.Diagnostics.All_declarations_of_0_must_have_identical_modifiers, ts.declarationNameToString(node.name)); + } + } + if (node.kind !== 159 /* PropertyDeclaration */ && node.kind !== 158 /* PropertySignature */) { + // We know we don't have a binding pattern or computed name here + checkExportsOnMergedDeclarations(node); + if (node.kind === 242 /* VariableDeclaration */ || node.kind === 191 /* BindingElement */) { + checkVarDeclaredNamesNotShadowed(node); + } + checkCollisionWithRequireExportsInGeneratedCode(node, node.name); + checkCollisionWithGlobalPromiseInGeneratedCode(node, node.name); + if (!compilerOptions.noEmit && languageVersion < 99 /* ESNext */ && needCollisionCheckForIdentifier(node, node.name, "WeakMap")) { + potentialWeakMapCollisions.push(node); + } + } + } + function errorNextVariableOrPropertyDeclarationMustHaveSameType(firstDeclaration, firstType, nextDeclaration, nextType) { + var nextDeclarationName = ts.getNameOfDeclaration(nextDeclaration); + var message = nextDeclaration.kind === 159 /* PropertyDeclaration */ || nextDeclaration.kind === 158 /* PropertySignature */ + ? ts.Diagnostics.Subsequent_property_declarations_must_have_the_same_type_Property_0_must_be_of_type_1_but_here_has_type_2 + : ts.Diagnostics.Subsequent_variable_declarations_must_have_the_same_type_Variable_0_must_be_of_type_1_but_here_has_type_2; + var declName = ts.declarationNameToString(nextDeclarationName); + var err = error(nextDeclarationName, message, declName, typeToString(firstType), typeToString(nextType)); + if (firstDeclaration) { + ts.addRelatedInfo(err, ts.createDiagnosticForNode(firstDeclaration, ts.Diagnostics._0_was_also_declared_here, declName)); + } + } + function areDeclarationFlagsIdentical(left, right) { + if ((left.kind === 156 /* Parameter */ && right.kind === 242 /* VariableDeclaration */) || + (left.kind === 242 /* VariableDeclaration */ && right.kind === 156 /* Parameter */)) { + // Differences in optionality between parameters and variables are allowed. + return true; + } + if (ts.hasQuestionToken(left) !== ts.hasQuestionToken(right)) { + return false; + } + var interestingFlags = 8 /* Private */ | + 16 /* Protected */ | + 256 /* Async */ | + 128 /* Abstract */ | + 64 /* Readonly */ | + 32 /* Static */; + return ts.getSelectedModifierFlags(left, interestingFlags) === ts.getSelectedModifierFlags(right, interestingFlags); + } + function checkVariableDeclaration(node) { + checkGrammarVariableDeclaration(node); + return checkVariableLikeDeclaration(node); + } + function checkBindingElement(node) { + checkGrammarBindingElement(node); + return checkVariableLikeDeclaration(node); + } + function checkVariableStatement(node) { + // Grammar checking + if (!checkGrammarDecoratorsAndModifiers(node) && !checkGrammarVariableDeclarationList(node.declarationList)) + checkGrammarForDisallowedLetOrConstStatement(node); + ts.forEach(node.declarationList.declarations, checkSourceElement); + } + function checkExpressionStatement(node) { + // Grammar checking + checkGrammarStatementInAmbientContext(node); + checkExpression(node.expression); + } + function checkIfStatement(node) { + // Grammar checking + checkGrammarStatementInAmbientContext(node); + var type = checkTruthinessExpression(node.expression); + checkTestingKnownTruthyCallableType(node.expression, node.thenStatement, type); + checkSourceElement(node.thenStatement); + if (node.thenStatement.kind === 224 /* EmptyStatement */) { + error(node.thenStatement, ts.Diagnostics.The_body_of_an_if_statement_cannot_be_the_empty_statement); + } + checkSourceElement(node.elseStatement); + } + function checkTestingKnownTruthyCallableType(condExpr, body, type) { + if (!strictNullChecks) { + return; + } + var testedNode = ts.isIdentifier(condExpr) + ? condExpr + : ts.isPropertyAccessExpression(condExpr) + ? condExpr.name + : undefined; + if (!testedNode) { + return; + } + var possiblyFalsy = getFalsyFlags(type); + if (possiblyFalsy) { + return; + } + // While it technically should be invalid for any known-truthy value + // to be tested, we de-scope to functions unrefenced in the block as a + // heuristic to identify the most common bugs. There are too many + // false positives for values sourced from type definitions without + // strictNullChecks otherwise. + var callSignatures = getSignaturesOfType(type, 0 /* Call */); + if (callSignatures.length === 0) { + return; + } + var testedFunctionSymbol = getSymbolAtLocation(testedNode); + if (!testedFunctionSymbol) { + return; + } + var functionIsUsedInBody = ts.forEachChild(body, function check(childNode) { + if (ts.isIdentifier(childNode)) { + var childSymbol = getSymbolAtLocation(childNode); + if (childSymbol && childSymbol === testedFunctionSymbol) { + // If the test was a simple identifier, the above check is sufficient + if (ts.isIdentifier(condExpr)) { + return true; + } + // Otherwise we need to ensure the symbol is called on the same target + var testedExpression = testedNode.parent; + var childExpression = childNode.parent; + while (testedExpression && childExpression) { + if (ts.isIdentifier(testedExpression) && ts.isIdentifier(childExpression) || + testedExpression.kind === 104 /* ThisKeyword */ && childExpression.kind === 104 /* ThisKeyword */) { + return getSymbolAtLocation(testedExpression) === getSymbolAtLocation(childExpression); + } + if (ts.isPropertyAccessExpression(testedExpression) && ts.isPropertyAccessExpression(childExpression)) { + if (getSymbolAtLocation(testedExpression.name) !== getSymbolAtLocation(childExpression.name)) { + return false; + } + childExpression = childExpression.expression; + testedExpression = testedExpression.expression; + } + else { + return false; + } + } + } + } + return ts.forEachChild(childNode, check); + }); + if (!functionIsUsedInBody) { + error(condExpr, ts.Diagnostics.This_condition_will_always_return_true_since_the_function_is_always_defined_Did_you_mean_to_call_it_instead); + } + } + function checkDoStatement(node) { + // Grammar checking + checkGrammarStatementInAmbientContext(node); + checkSourceElement(node.statement); + checkTruthinessExpression(node.expression); + } + function checkWhileStatement(node) { + // Grammar checking + checkGrammarStatementInAmbientContext(node); + checkTruthinessExpression(node.expression); + checkSourceElement(node.statement); + } + function checkTruthinessOfType(type, node) { + if (type.flags & 16384 /* Void */) { + error(node, ts.Diagnostics.An_expression_of_type_void_cannot_be_tested_for_truthiness); + } + return type; + } + function checkTruthinessExpression(node, checkMode) { + return checkTruthinessOfType(checkExpression(node, checkMode), node); + } + function checkForStatement(node) { + // Grammar checking + if (!checkGrammarStatementInAmbientContext(node)) { + if (node.initializer && node.initializer.kind === 243 /* VariableDeclarationList */) { + checkGrammarVariableDeclarationList(node.initializer); + } + } + if (node.initializer) { + if (node.initializer.kind === 243 /* VariableDeclarationList */) { + ts.forEach(node.initializer.declarations, checkVariableDeclaration); + } + else { + checkExpression(node.initializer); + } + } + if (node.condition) + checkTruthinessExpression(node.condition); + if (node.incrementor) + checkExpression(node.incrementor); + checkSourceElement(node.statement); + if (node.locals) { + registerForUnusedIdentifiersCheck(node); + } + } + function checkForOfStatement(node) { + checkGrammarForInOrForOfStatement(node); + if (node.awaitModifier) { + var functionFlags = ts.getFunctionFlags(ts.getContainingFunction(node)); + if ((functionFlags & (4 /* Invalid */ | 2 /* Async */)) === 2 /* Async */ && languageVersion < 99 /* ESNext */) { + // for..await..of in an async function or async generator function prior to ESNext requires the __asyncValues helper + checkExternalEmitHelpers(node, 32768 /* ForAwaitOfIncludes */); + } + } + else if (compilerOptions.downlevelIteration && languageVersion < 2 /* ES2015 */) { + // for..of prior to ES2015 requires the __values helper when downlevelIteration is enabled + checkExternalEmitHelpers(node, 256 /* ForOfIncludes */); + } + // Check the LHS and RHS + // If the LHS is a declaration, just check it as a variable declaration, which will in turn check the RHS + // via checkRightHandSideOfForOf. + // If the LHS is an expression, check the LHS, as a destructuring assignment or as a reference. + // Then check that the RHS is assignable to it. + if (node.initializer.kind === 243 /* VariableDeclarationList */) { + checkForInOrForOfVariableDeclaration(node); + } + else { + var varExpr = node.initializer; + var iteratedType = checkRightHandSideOfForOf(node); + // There may be a destructuring assignment on the left side + if (varExpr.kind === 192 /* ArrayLiteralExpression */ || varExpr.kind === 193 /* ObjectLiteralExpression */) { + // iteratedType may be undefined. In this case, we still want to check the structure of + // varExpr, in particular making sure it's a valid LeftHandSideExpression. But we'd like + // to short circuit the type relation checking as much as possible, so we pass the unknownType. + checkDestructuringAssignment(varExpr, iteratedType || errorType); + } + else { + var leftType = checkExpression(varExpr); + checkReferenceExpression(varExpr, ts.Diagnostics.The_left_hand_side_of_a_for_of_statement_must_be_a_variable_or_a_property_access, ts.Diagnostics.The_left_hand_side_of_a_for_of_statement_may_not_be_an_optional_property_access); + // iteratedType will be undefined if the rightType was missing properties/signatures + // required to get its iteratedType (like [Symbol.iterator] or next). This may be + // because we accessed properties from anyType, or it may have led to an error inside + // getElementTypeOfIterable. + if (iteratedType) { + checkTypeAssignableToAndOptionallyElaborate(iteratedType, leftType, varExpr, node.expression); + } + } + } + checkSourceElement(node.statement); + if (node.locals) { + registerForUnusedIdentifiersCheck(node); + } + } + function checkForInStatement(node) { + // Grammar checking + checkGrammarForInOrForOfStatement(node); + var rightType = getNonNullableTypeIfNeeded(checkExpression(node.expression)); + // TypeScript 1.0 spec (April 2014): 5.4 + // In a 'for-in' statement of the form + // for (let VarDecl in Expr) Statement + // VarDecl must be a variable declaration without a type annotation that declares a variable of type Any, + // and Expr must be an expression of type Any, an object type, or a type parameter type. + if (node.initializer.kind === 243 /* VariableDeclarationList */) { + var variable = node.initializer.declarations[0]; + if (variable && ts.isBindingPattern(variable.name)) { + error(variable.name, ts.Diagnostics.The_left_hand_side_of_a_for_in_statement_cannot_be_a_destructuring_pattern); + } + checkForInOrForOfVariableDeclaration(node); + } + else { + // In a 'for-in' statement of the form + // for (Var in Expr) Statement + // Var must be an expression classified as a reference of type Any or the String primitive type, + // and Expr must be an expression of type Any, an object type, or a type parameter type. + var varExpr = node.initializer; + var leftType = checkExpression(varExpr); + if (varExpr.kind === 192 /* ArrayLiteralExpression */ || varExpr.kind === 193 /* ObjectLiteralExpression */) { + error(varExpr, ts.Diagnostics.The_left_hand_side_of_a_for_in_statement_cannot_be_a_destructuring_pattern); + } + else if (!isTypeAssignableTo(getIndexTypeOrString(rightType), leftType)) { + error(varExpr, ts.Diagnostics.The_left_hand_side_of_a_for_in_statement_must_be_of_type_string_or_any); + } + else { + // run check only former check succeeded to avoid cascading errors + checkReferenceExpression(varExpr, ts.Diagnostics.The_left_hand_side_of_a_for_in_statement_must_be_a_variable_or_a_property_access, ts.Diagnostics.The_left_hand_side_of_a_for_in_statement_may_not_be_an_optional_property_access); + } + } + // unknownType is returned i.e. if node.expression is identifier whose name cannot be resolved + // in this case error about missing name is already reported - do not report extra one + if (rightType === neverType || !isTypeAssignableToKind(rightType, 67108864 /* NonPrimitive */ | 58982400 /* InstantiableNonPrimitive */)) { + error(node.expression, ts.Diagnostics.The_right_hand_side_of_a_for_in_statement_must_be_of_type_any_an_object_type_or_a_type_parameter_but_here_has_type_0, typeToString(rightType)); + } + checkSourceElement(node.statement); + if (node.locals) { + registerForUnusedIdentifiersCheck(node); + } + } + function checkForInOrForOfVariableDeclaration(iterationStatement) { + var variableDeclarationList = iterationStatement.initializer; + // checkGrammarForInOrForOfStatement will check that there is exactly one declaration. + if (variableDeclarationList.declarations.length >= 1) { + var decl = variableDeclarationList.declarations[0]; + checkVariableDeclaration(decl); + } + } + function checkRightHandSideOfForOf(statement) { + var use = statement.awaitModifier ? 15 /* ForAwaitOf */ : 13 /* ForOf */; + return checkIteratedTypeOrElementType(use, checkNonNullExpression(statement.expression), undefinedType, statement.expression); + } + function checkIteratedTypeOrElementType(use, inputType, sentType, errorNode) { + if (isTypeAny(inputType)) { + return inputType; + } + return getIteratedTypeOrElementType(use, inputType, sentType, errorNode, /*checkAssignability*/ true) || anyType; + } + /** + * When consuming an iterable type in a for..of, spread, or iterator destructuring assignment + * we want to get the iterated type of an iterable for ES2015 or later, or the iterated type + * of a iterable (if defined globally) or element type of an array like for ES2015 or earlier. + */ + function getIteratedTypeOrElementType(use, inputType, sentType, errorNode, checkAssignability) { + var allowAsyncIterables = (use & 2 /* AllowsAsyncIterablesFlag */) !== 0; + if (inputType === neverType) { + reportTypeNotIterableError(errorNode, inputType, allowAsyncIterables); // TODO: GH#18217 + return undefined; + } + var uplevelIteration = languageVersion >= 2 /* ES2015 */; + var downlevelIteration = !uplevelIteration && compilerOptions.downlevelIteration; + // Get the iterated type of an `Iterable` or `IterableIterator` only in ES2015 + // or higher, when inside of an async generator or for-await-if, or when + // downlevelIteration is requested. + if (uplevelIteration || downlevelIteration || allowAsyncIterables) { + // We only report errors for an invalid iterable type in ES2015 or higher. + var iterationTypes = getIterationTypesOfIterable(inputType, use, uplevelIteration ? errorNode : undefined); + if (checkAssignability) { + if (iterationTypes) { + var diagnostic = use & 8 /* ForOfFlag */ ? ts.Diagnostics.Cannot_iterate_value_because_the_next_method_of_its_iterator_expects_type_1_but_for_of_will_always_send_0 : + use & 32 /* SpreadFlag */ ? ts.Diagnostics.Cannot_iterate_value_because_the_next_method_of_its_iterator_expects_type_1_but_array_spread_will_always_send_0 : + use & 64 /* DestructuringFlag */ ? ts.Diagnostics.Cannot_iterate_value_because_the_next_method_of_its_iterator_expects_type_1_but_array_destructuring_will_always_send_0 : + use & 16 /* YieldStarFlag */ ? ts.Diagnostics.Cannot_delegate_iteration_to_value_because_the_next_method_of_its_iterator_expects_type_1_but_the_containing_generator_will_always_send_0 : + undefined; + if (diagnostic) { + checkTypeAssignableTo(sentType, iterationTypes.nextType, errorNode, diagnostic); + } + } + } + if (iterationTypes || uplevelIteration) { + return iterationTypes && iterationTypes.yieldType; + } + } + var arrayType = inputType; + var reportedError = false; + var hasStringConstituent = false; + // If strings are permitted, remove any string-like constituents from the array type. + // This allows us to find other non-string element types from an array unioned with + // a string. + if (use & 4 /* AllowsStringInputFlag */) { + if (arrayType.flags & 1048576 /* Union */) { + // After we remove all types that are StringLike, we will know if there was a string constituent + // based on whether the result of filter is a new array. + var arrayTypes = inputType.types; + var filteredTypes = ts.filter(arrayTypes, function (t) { return !(t.flags & 132 /* StringLike */); }); + if (filteredTypes !== arrayTypes) { + arrayType = getUnionType(filteredTypes, 2 /* Subtype */); + } + } + else if (arrayType.flags & 132 /* StringLike */) { + arrayType = neverType; + } + hasStringConstituent = arrayType !== inputType; + if (hasStringConstituent) { + if (languageVersion < 1 /* ES5 */) { + if (errorNode) { + error(errorNode, ts.Diagnostics.Using_a_string_in_a_for_of_statement_is_only_supported_in_ECMAScript_5_and_higher); + reportedError = true; + } + } + // Now that we've removed all the StringLike types, if no constituents remain, then the entire + // arrayOrStringType was a string. + if (arrayType.flags & 131072 /* Never */) { + return stringType; + } + } + } + if (!isArrayLikeType(arrayType)) { + if (errorNode && !reportedError) { + // Which error we report depends on whether we allow strings or if there was a + // string constituent. For example, if the input type is number | string, we + // want to say that number is not an array type. But if the input was just + // number and string input is allowed, we want to say that number is not an + // array type or a string type. + var yieldType = getIterationTypeOfIterable(use, 0 /* Yield */, inputType, /*errorNode*/ undefined); + var _a = !(use & 4 /* AllowsStringInputFlag */) || hasStringConstituent + ? downlevelIteration + ? [ts.Diagnostics.Type_0_is_not_an_array_type_or_does_not_have_a_Symbol_iterator_method_that_returns_an_iterator, true] + : yieldType + ? [ts.Diagnostics.Type_0_is_not_an_array_type_or_a_string_type_Use_compiler_option_downlevelIteration_to_allow_iterating_of_iterators, false] + : [ts.Diagnostics.Type_0_is_not_an_array_type, true] + : downlevelIteration + ? [ts.Diagnostics.Type_0_is_not_an_array_type_or_a_string_type_or_does_not_have_a_Symbol_iterator_method_that_returns_an_iterator, true] + : yieldType + ? [ts.Diagnostics.Type_0_is_not_an_array_type_or_a_string_type_Use_compiler_option_downlevelIteration_to_allow_iterating_of_iterators, false] + : [ts.Diagnostics.Type_0_is_not_an_array_type_or_a_string_type, true], defaultDiagnostic = _a[0], maybeMissingAwait = _a[1]; + errorAndMaybeSuggestAwait(errorNode, maybeMissingAwait && !!getAwaitedTypeOfPromise(arrayType), defaultDiagnostic, typeToString(arrayType)); + } + return hasStringConstituent ? stringType : undefined; + } + var arrayElementType = getIndexTypeOfType(arrayType, 1 /* Number */); + if (hasStringConstituent && arrayElementType) { + // This is just an optimization for the case where arrayOrStringType is string | string[] + if (arrayElementType.flags & 132 /* StringLike */) { + return stringType; + } + return getUnionType([arrayElementType, stringType], 2 /* Subtype */); + } + return arrayElementType; + } + /** + * Gets the requested "iteration type" from an `Iterable`-like or `AsyncIterable`-like type. + */ + function getIterationTypeOfIterable(use, typeKind, inputType, errorNode) { + if (isTypeAny(inputType)) { + return undefined; + } + var iterationTypes = getIterationTypesOfIterable(inputType, use, errorNode); + return iterationTypes && iterationTypes[getIterationTypesKeyFromIterationTypeKind(typeKind)]; + } + function createIterationTypes(yieldType, returnType, nextType) { + // `yieldType` and `returnType` are defaulted to `neverType` they each will be combined + // via `getUnionType` when merging iteration types. `nextType` is defined as `unknownType` + // as it is combined via `getIntersectionType` when merging iteration types. + if (yieldType === void 0) { yieldType = neverType; } + if (returnType === void 0) { returnType = neverType; } + if (nextType === void 0) { nextType = unknownType; } + // Use the cache only for intrinsic types to keep it small as they are likely to be + // more frequently created (i.e. `Iterator`). Iteration types + // are also cached on the type they are requested for, so we shouldn't need to maintain + // the cache for less-frequently used types. + if (yieldType.flags & 67359327 /* Intrinsic */ && + returnType.flags & (1 /* Any */ | 131072 /* Never */ | 2 /* Unknown */ | 16384 /* Void */ | 32768 /* Undefined */) && + nextType.flags & (1 /* Any */ | 131072 /* Never */ | 2 /* Unknown */ | 16384 /* Void */ | 32768 /* Undefined */)) { + var id = getTypeListId([yieldType, returnType, nextType]); + var iterationTypes = iterationTypesCache.get(id); + if (!iterationTypes) { + iterationTypes = { yieldType: yieldType, returnType: returnType, nextType: nextType }; + iterationTypesCache.set(id, iterationTypes); + } + return iterationTypes; + } + return { yieldType: yieldType, returnType: returnType, nextType: nextType }; + } + /** + * Combines multiple `IterationTypes` records. + * + * If `array` is empty or all elements are missing or are references to `noIterationTypes`, + * then `noIterationTypes` is returned. Otherwise, an `IterationTypes` record is returned + * for the combined iteration types. + */ + function combineIterationTypes(array) { + var yieldTypes; + var returnTypes; + var nextTypes; + for (var _i = 0, array_10 = array; _i < array_10.length; _i++) { + var iterationTypes = array_10[_i]; + if (iterationTypes === undefined || iterationTypes === noIterationTypes) { + continue; + } + if (iterationTypes === anyIterationTypes) { + return anyIterationTypes; + } + yieldTypes = ts.append(yieldTypes, iterationTypes.yieldType); + returnTypes = ts.append(returnTypes, iterationTypes.returnType); + nextTypes = ts.append(nextTypes, iterationTypes.nextType); + } + if (yieldTypes || returnTypes || nextTypes) { + return createIterationTypes(yieldTypes && getUnionType(yieldTypes), returnTypes && getUnionType(returnTypes), nextTypes && getIntersectionType(nextTypes)); + } + return noIterationTypes; + } + function getCachedIterationTypes(type, cacheKey) { + return type[cacheKey]; + } + function setCachedIterationTypes(type, cacheKey, cachedTypes) { + return type[cacheKey] = cachedTypes; + } + /** + * Gets the *yield*, *return*, and *next* types from an `Iterable`-like or `AsyncIterable`-like type. + * + * At every level that involves analyzing return types of signatures, we union the return types of all the signatures. + * + * Another thing to note is that at any step of this process, we could run into a dead end, + * meaning either the property is missing, or we run into the anyType. If either of these things + * happens, we return `undefined` to signal that we could not find the iteration type. If a property + * is missing, and the previous step did not result in `any`, then we also give an error if the + * caller requested it. Then the caller can decide what to do in the case where there is no iterated + * type. + * + * For a **for-of** statement, `yield*` (in a normal generator), spread, array + * destructuring, or normal generator we will only ever look for a `[Symbol.iterator]()` + * method. + * + * For an async generator we will only ever look at the `[Symbol.asyncIterator]()` method. + * + * For a **for-await-of** statement or a `yield*` in an async generator we will look for + * the `[Symbol.asyncIterator]()` method first, and then the `[Symbol.iterator]()` method. + */ + function getIterationTypesOfIterable(type, use, errorNode) { + if (isTypeAny(type)) { + return anyIterationTypes; + } + if (!(type.flags & 1048576 /* Union */)) { + var iterationTypes_1 = getIterationTypesOfIterableWorker(type, use, errorNode); + if (iterationTypes_1 === noIterationTypes) { + if (errorNode) { + reportTypeNotIterableError(errorNode, type, !!(use & 2 /* AllowsAsyncIterablesFlag */)); + } + return undefined; + } + return iterationTypes_1; + } + var cacheKey = use & 2 /* AllowsAsyncIterablesFlag */ ? "iterationTypesOfAsyncIterable" : "iterationTypesOfIterable"; + var cachedTypes = getCachedIterationTypes(type, cacheKey); + if (cachedTypes) + return cachedTypes === noIterationTypes ? undefined : cachedTypes; + var allIterationTypes; + for (var _i = 0, _a = type.types; _i < _a.length; _i++) { + var constituent = _a[_i]; + var iterationTypes_2 = getIterationTypesOfIterableWorker(constituent, use, errorNode); + if (iterationTypes_2 === noIterationTypes) { + if (errorNode) { + reportTypeNotIterableError(errorNode, type, !!(use & 2 /* AllowsAsyncIterablesFlag */)); + errorNode = undefined; + } + } + else { + allIterationTypes = ts.append(allIterationTypes, iterationTypes_2); + } + } + var iterationTypes = allIterationTypes ? combineIterationTypes(allIterationTypes) : noIterationTypes; + setCachedIterationTypes(type, cacheKey, iterationTypes); + return iterationTypes === noIterationTypes ? undefined : iterationTypes; + } + function getAsyncFromSyncIterationTypes(iterationTypes, errorNode) { + if (iterationTypes === noIterationTypes) + return noIterationTypes; + if (iterationTypes === anyIterationTypes) + return anyIterationTypes; + var yieldType = iterationTypes.yieldType, returnType = iterationTypes.returnType, nextType = iterationTypes.nextType; + return createIterationTypes(getAwaitedType(yieldType, errorNode) || anyType, getAwaitedType(returnType, errorNode) || anyType, nextType); + } + /** + * Gets the *yield*, *return*, and *next* types from a non-union type. + * + * If we are unable to find the *yield*, *return*, and *next* types, `noIterationTypes` is + * returned to indicate to the caller that it should report an error. Otherwise, an + * `IterationTypes` record is returned. + * + * NOTE: You probably don't want to call this directly and should be calling + * `getIterationTypesOfIterable` instead. + */ + function getIterationTypesOfIterableWorker(type, use, errorNode) { + if (isTypeAny(type)) { + return anyIterationTypes; + } + if (use & 2 /* AllowsAsyncIterablesFlag */) { + var iterationTypes = getIterationTypesOfIterableCached(type, asyncIterationTypesResolver) || + getIterationTypesOfIterableFast(type, asyncIterationTypesResolver); + if (iterationTypes) { + return iterationTypes; + } + } + if (use & 1 /* AllowsSyncIterablesFlag */) { + var iterationTypes = getIterationTypesOfIterableCached(type, syncIterationTypesResolver) || + getIterationTypesOfIterableFast(type, syncIterationTypesResolver); + if (iterationTypes) { + if (use & 2 /* AllowsAsyncIterablesFlag */) { + // for a sync iterable in an async context, only use the cached types if they are valid. + if (iterationTypes !== noIterationTypes) { + return setCachedIterationTypes(type, "iterationTypesOfAsyncIterable", getAsyncFromSyncIterationTypes(iterationTypes, errorNode)); + } + } + else { + return iterationTypes; + } + } + } + if (use & 2 /* AllowsAsyncIterablesFlag */) { + var iterationTypes = getIterationTypesOfIterableSlow(type, asyncIterationTypesResolver, errorNode); + if (iterationTypes !== noIterationTypes) { + return iterationTypes; + } + } + if (use & 1 /* AllowsSyncIterablesFlag */) { + var iterationTypes = getIterationTypesOfIterableSlow(type, syncIterationTypesResolver, errorNode); + if (iterationTypes !== noIterationTypes) { + if (use & 2 /* AllowsAsyncIterablesFlag */) { + return setCachedIterationTypes(type, "iterationTypesOfAsyncIterable", iterationTypes + ? getAsyncFromSyncIterationTypes(iterationTypes, errorNode) + : noIterationTypes); + } + else { + return iterationTypes; + } + } + } + return noIterationTypes; + } + /** + * Gets the *yield*, *return*, and *next* types of an `Iterable`-like or + * `AsyncIterable`-like type from the cache. + * + * NOTE: You probably don't want to call this directly and should be calling + * `getIterationTypesOfIterable` instead. + */ + function getIterationTypesOfIterableCached(type, resolver) { + return getCachedIterationTypes(type, resolver.iterableCacheKey); + } + function getIterationTypesOfGlobalIterableType(globalType, resolver) { + var globalIterationTypes = getIterationTypesOfIterableCached(globalType, resolver) || + getIterationTypesOfIterableSlow(globalType, resolver, /*errorNode*/ undefined); + return globalIterationTypes === noIterationTypes ? defaultIterationTypes : globalIterationTypes; + } + /** + * Gets the *yield*, *return*, and *next* types of an `Iterable`-like or `AsyncIterable`-like + * type from from common heuristics. + * + * If we previously analyzed this type and found no iteration types, `noIterationTypes` is + * returned. If we found iteration types, an `IterationTypes` record is returned. + * Otherwise, we return `undefined` to indicate to the caller it should perform a more + * exhaustive analysis. + * + * NOTE: You probably don't want to call this directly and should be calling + * `getIterationTypesOfIterable` instead. + */ + function getIterationTypesOfIterableFast(type, resolver) { + // As an optimization, if the type is an instantiation of one of the following global types, then + // just grab its related type argument: + // - `Iterable` or `AsyncIterable` + // - `IterableIterator` or `AsyncIterableIterator` + var globalType; + if (isReferenceToType(type, globalType = resolver.getGlobalIterableType(/*reportErrors*/ false)) || + isReferenceToType(type, globalType = resolver.getGlobalIterableIteratorType(/*reportErrors*/ false))) { + var yieldType = getTypeArguments(type)[0]; + // The "return" and "next" types of `Iterable` and `IterableIterator` are defined by the + // iteration types of their `[Symbol.iterator]()` method. The same is true for their async cousins. + // While we define these as `any` and `undefined` in our libs by default, a custom lib *could* use + // different definitions. + var _a = getIterationTypesOfGlobalIterableType(globalType, resolver), returnType = _a.returnType, nextType = _a.nextType; + return setCachedIterationTypes(type, resolver.iterableCacheKey, createIterationTypes(yieldType, returnType, nextType)); + } + // As an optimization, if the type is an instantiation of the following global type, then + // just grab its related type arguments: + // - `Generator` or `AsyncGenerator` + if (isReferenceToType(type, resolver.getGlobalGeneratorType(/*reportErrors*/ false))) { + var _b = getTypeArguments(type), yieldType = _b[0], returnType = _b[1], nextType = _b[2]; + return setCachedIterationTypes(type, resolver.iterableCacheKey, createIterationTypes(yieldType, returnType, nextType)); + } + } + /** + * Gets the *yield*, *return*, and *next* types of an `Iterable`-like or `AsyncIterable`-like + * type from its members. + * + * If we successfully found the *yield*, *return*, and *next* types, an `IterationTypes` + * record is returned. Otherwise, `noIterationTypes` is returned. + * + * NOTE: You probably don't want to call this directly and should be calling + * `getIterationTypesOfIterable` instead. + */ + function getIterationTypesOfIterableSlow(type, resolver, errorNode) { + var _a; + var method = getPropertyOfType(type, ts.getPropertyNameForKnownSymbolName(resolver.iteratorSymbolName)); + var methodType = method && !(method.flags & 16777216 /* Optional */) ? getTypeOfSymbol(method) : undefined; + if (isTypeAny(methodType)) { + return setCachedIterationTypes(type, resolver.iterableCacheKey, anyIterationTypes); + } + var signatures = methodType ? getSignaturesOfType(methodType, 0 /* Call */) : undefined; + if (!ts.some(signatures)) { + return setCachedIterationTypes(type, resolver.iterableCacheKey, noIterationTypes); + } + var iteratorType = getUnionType(ts.map(signatures, getReturnTypeOfSignature), 2 /* Subtype */); + var iterationTypes = (_a = getIterationTypesOfIterator(iteratorType, resolver, errorNode)) !== null && _a !== void 0 ? _a : noIterationTypes; + return setCachedIterationTypes(type, resolver.iterableCacheKey, iterationTypes); + } + function reportTypeNotIterableError(errorNode, type, allowAsyncIterables) { + var message = allowAsyncIterables + ? ts.Diagnostics.Type_0_must_have_a_Symbol_asyncIterator_method_that_returns_an_async_iterator + : ts.Diagnostics.Type_0_must_have_a_Symbol_iterator_method_that_returns_an_iterator; + errorAndMaybeSuggestAwait(errorNode, !!getAwaitedTypeOfPromise(type), message, typeToString(type)); + } + /** + * Gets the *yield*, *return*, and *next* types from an `Iterator`-like or `AsyncIterator`-like type. + * + * If we successfully found the *yield*, *return*, and *next* types, an `IterationTypes` + * record is returned. Otherwise, `undefined` is returned. + */ + function getIterationTypesOfIterator(type, resolver, errorNode) { + if (isTypeAny(type)) { + return anyIterationTypes; + } + var iterationTypes = getIterationTypesOfIteratorCached(type, resolver) || + getIterationTypesOfIteratorFast(type, resolver) || + getIterationTypesOfIteratorSlow(type, resolver, errorNode); + return iterationTypes === noIterationTypes ? undefined : iterationTypes; + } + /** + * Gets the iteration types of an `Iterator`-like or `AsyncIterator`-like type from the + * cache. + * + * NOTE: You probably don't want to call this directly and should be calling + * `getIterationTypesOfIterator` instead. + */ + function getIterationTypesOfIteratorCached(type, resolver) { + return getCachedIterationTypes(type, resolver.iteratorCacheKey); + } + /** + * Gets the iteration types of an `Iterator`-like or `AsyncIterator`-like type from the + * cache or from common heuristics. + * + * If we previously analyzed this type and found no iteration types, `noIterationTypes` is + * returned. If we found iteration types, an `IterationTypes` record is returned. + * Otherwise, we return `undefined` to indicate to the caller it should perform a more + * exhaustive analysis. + * + * NOTE: You probably don't want to call this directly and should be calling + * `getIterationTypesOfIterator` instead. + */ + function getIterationTypesOfIteratorFast(type, resolver) { + // As an optimization, if the type is an instantiation of one of the following global types, + // then just grab its related type argument: + // - `IterableIterator` or `AsyncIterableIterator` + // - `Iterator` or `AsyncIterator` + // - `Generator` or `AsyncGenerator` + var globalType = resolver.getGlobalIterableIteratorType(/*reportErrors*/ false); + if (isReferenceToType(type, globalType)) { + var yieldType = getTypeArguments(type)[0]; + // The "return" and "next" types of `IterableIterator` and `AsyncIterableIterator` are defined by the + // iteration types of their `next`, `return`, and `throw` methods. While we define these as `any` + // and `undefined` in our libs by default, a custom lib *could* use different definitions. + var globalIterationTypes = getIterationTypesOfIteratorCached(globalType, resolver) || + getIterationTypesOfIteratorSlow(globalType, resolver, /*errorNode*/ undefined); + var _a = globalIterationTypes === noIterationTypes ? defaultIterationTypes : globalIterationTypes, returnType = _a.returnType, nextType = _a.nextType; + return setCachedIterationTypes(type, resolver.iteratorCacheKey, createIterationTypes(yieldType, returnType, nextType)); + } + if (isReferenceToType(type, resolver.getGlobalIteratorType(/*reportErrors*/ false)) || + isReferenceToType(type, resolver.getGlobalGeneratorType(/*reportErrors*/ false))) { + var _b = getTypeArguments(type), yieldType = _b[0], returnType = _b[1], nextType = _b[2]; + return setCachedIterationTypes(type, resolver.iteratorCacheKey, createIterationTypes(yieldType, returnType, nextType)); + } + } + function isIteratorResult(type, kind) { + // From https://tc39.github.io/ecma262/#sec-iteratorresult-interface: + // > [done] is the result status of an iterator `next` method call. If the end of the iterator was reached `done` is `true`. + // > If the end was not reached `done` is `false` and a value is available. + // > If a `done` property (either own or inherited) does not exist, it is consider to have the value `false`. + var doneType = getTypeOfPropertyOfType(type, "done") || falseType; + return isTypeAssignableTo(kind === 0 /* Yield */ ? falseType : trueType, doneType); + } + function isYieldIteratorResult(type) { + return isIteratorResult(type, 0 /* Yield */); + } + function isReturnIteratorResult(type) { + return isIteratorResult(type, 1 /* Return */); + } + /** + * Gets the *yield* and *return* types of an `IteratorResult`-like type. + * + * If we are unable to determine a *yield* or a *return* type, `noIterationTypes` is + * returned to indicate to the caller that it should handle the error. Otherwise, an + * `IterationTypes` record is returned. + */ + function getIterationTypesOfIteratorResult(type) { + if (isTypeAny(type)) { + return anyIterationTypes; + } + var cachedTypes = getCachedIterationTypes(type, "iterationTypesOfIteratorResult"); + if (cachedTypes) { + return cachedTypes; + } + // As an optimization, if the type is an instantiation of one of the global `IteratorYieldResult` + // or `IteratorReturnResult` types, then just grab its type argument. + if (isReferenceToType(type, getGlobalIteratorYieldResultType(/*reportErrors*/ false))) { + var yieldType_1 = getTypeArguments(type)[0]; + return setCachedIterationTypes(type, "iterationTypesOfIteratorResult", createIterationTypes(yieldType_1, /*returnType*/ undefined, /*nextType*/ undefined)); + } + if (isReferenceToType(type, getGlobalIteratorReturnResultType(/*reportErrors*/ false))) { + var returnType_1 = getTypeArguments(type)[0]; + return setCachedIterationTypes(type, "iterationTypesOfIteratorResult", createIterationTypes(/*yieldType*/ undefined, returnType_1, /*nextType*/ undefined)); + } + // Choose any constituents that can produce the requested iteration type. + var yieldIteratorResult = filterType(type, isYieldIteratorResult); + var yieldType = yieldIteratorResult !== neverType ? getTypeOfPropertyOfType(yieldIteratorResult, "value") : undefined; + var returnIteratorResult = filterType(type, isReturnIteratorResult); + var returnType = returnIteratorResult !== neverType ? getTypeOfPropertyOfType(returnIteratorResult, "value") : undefined; + if (!yieldType && !returnType) { + return setCachedIterationTypes(type, "iterationTypesOfIteratorResult", noIterationTypes); + } + // From https://tc39.github.io/ecma262/#sec-iteratorresult-interface + // > ... If the iterator does not have a return value, `value` is `undefined`. In that case, the + // > `value` property may be absent from the conforming object if it does not inherit an explicit + // > `value` property. + return setCachedIterationTypes(type, "iterationTypesOfIteratorResult", createIterationTypes(yieldType, returnType || voidType, /*nextType*/ undefined)); + } + /** + * Gets the *yield*, *return*, and *next* types of a the `next()`, `return()`, or + * `throw()` method of an `Iterator`-like or `AsyncIterator`-like type. + * + * If we successfully found the *yield*, *return*, and *next* types, an `IterationTypes` + * record is returned. Otherwise, we return `undefined`. + */ + function getIterationTypesOfMethod(type, resolver, methodName, errorNode) { + var method = getPropertyOfType(type, methodName); + // Ignore 'return' or 'throw' if they are missing. + if (!method && methodName !== "next") { + return undefined; + } + var methodType = method && !(methodName === "next" && (method.flags & 16777216 /* Optional */)) + ? methodName === "next" ? getTypeOfSymbol(method) : getTypeWithFacts(getTypeOfSymbol(method), 2097152 /* NEUndefinedOrNull */) + : undefined; + if (isTypeAny(methodType)) { + // `return()` and `throw()` don't provide a *next* type. + return methodName === "next" ? anyIterationTypes : anyIterationTypesExceptNext; + } + // Both async and non-async iterators *must* have a `next` method. + var methodSignatures = methodType ? getSignaturesOfType(methodType, 0 /* Call */) : ts.emptyArray; + if (methodSignatures.length === 0) { + if (errorNode) { + var diagnostic = methodName === "next" + ? resolver.mustHaveANextMethodDiagnostic + : resolver.mustBeAMethodDiagnostic; + error(errorNode, diagnostic, methodName); + } + return methodName === "next" ? anyIterationTypes : undefined; + } + // Extract the first parameter and return type of each signature. + var methodParameterTypes; + var methodReturnTypes; + for (var _i = 0, methodSignatures_1 = methodSignatures; _i < methodSignatures_1.length; _i++) { + var signature = methodSignatures_1[_i]; + if (methodName !== "throw" && ts.some(signature.parameters)) { + methodParameterTypes = ts.append(methodParameterTypes, getTypeAtPosition(signature, 0)); + } + methodReturnTypes = ts.append(methodReturnTypes, getReturnTypeOfSignature(signature)); + } + // Resolve the *next* or *return* type from the first parameter of a `next()` or + // `return()` method, respectively. + var returnTypes; + var nextType; + if (methodName !== "throw") { + var methodParameterType = methodParameterTypes ? getUnionType(methodParameterTypes) : unknownType; + if (methodName === "next") { + // The value of `next(value)` is *not* awaited by async generators + nextType = methodParameterType; + } + else if (methodName === "return") { + // The value of `return(value)` *is* awaited by async generators + var resolvedMethodParameterType = resolver.resolveIterationType(methodParameterType, errorNode) || anyType; + returnTypes = ts.append(returnTypes, resolvedMethodParameterType); + } + } + // Resolve the *yield* and *return* types from the return type of the method (i.e. `IteratorResult`) + var yieldType; + var methodReturnType = methodReturnTypes ? getUnionType(methodReturnTypes, 2 /* Subtype */) : neverType; + var resolvedMethodReturnType = resolver.resolveIterationType(methodReturnType, errorNode) || anyType; + var iterationTypes = getIterationTypesOfIteratorResult(resolvedMethodReturnType); + if (iterationTypes === noIterationTypes) { + if (errorNode) { + error(errorNode, resolver.mustHaveAValueDiagnostic, methodName); + } + yieldType = anyType; + returnTypes = ts.append(returnTypes, anyType); + } + else { + yieldType = iterationTypes.yieldType; + returnTypes = ts.append(returnTypes, iterationTypes.returnType); + } + return createIterationTypes(yieldType, getUnionType(returnTypes), nextType); + } + /** + * Gets the *yield*, *return*, and *next* types of an `Iterator`-like or `AsyncIterator`-like + * type from its members. + * + * If we successfully found the *yield*, *return*, and *next* types, an `IterationTypes` + * record is returned. Otherwise, `noIterationTypes` is returned. + * + * NOTE: You probably don't want to call this directly and should be calling + * `getIterationTypesOfIterator` instead. + */ + function getIterationTypesOfIteratorSlow(type, resolver, errorNode) { + var iterationTypes = combineIterationTypes([ + getIterationTypesOfMethod(type, resolver, "next", errorNode), + getIterationTypesOfMethod(type, resolver, "return", errorNode), + getIterationTypesOfMethod(type, resolver, "throw", errorNode), + ]); + return setCachedIterationTypes(type, resolver.iteratorCacheKey, iterationTypes); + } + /** + * Gets the requested "iteration type" from a type that is either `Iterable`-like, `Iterator`-like, + * `IterableIterator`-like, or `Generator`-like (for a non-async generator); or `AsyncIterable`-like, + * `AsyncIterator`-like, `AsyncIterableIterator`-like, or `AsyncGenerator`-like (for an async generator). + */ + function getIterationTypeOfGeneratorFunctionReturnType(kind, returnType, isAsyncGenerator) { + if (isTypeAny(returnType)) { + return undefined; + } + var iterationTypes = getIterationTypesOfGeneratorFunctionReturnType(returnType, isAsyncGenerator); + return iterationTypes && iterationTypes[getIterationTypesKeyFromIterationTypeKind(kind)]; + } + function getIterationTypesOfGeneratorFunctionReturnType(type, isAsyncGenerator) { + if (isTypeAny(type)) { + return anyIterationTypes; + } + var use = isAsyncGenerator ? 2 /* AsyncGeneratorReturnType */ : 1 /* GeneratorReturnType */; + var resolver = isAsyncGenerator ? asyncIterationTypesResolver : syncIterationTypesResolver; + return getIterationTypesOfIterable(type, use, /*errorNode*/ undefined) || + getIterationTypesOfIterator(type, resolver, /*errorNode*/ undefined); + } + function checkBreakOrContinueStatement(node) { + // Grammar checking + if (!checkGrammarStatementInAmbientContext(node)) + checkGrammarBreakOrContinueStatement(node); + // TODO: Check that target label is valid + } + function unwrapReturnType(returnType, functionFlags) { + var _a, _b; + var isGenerator = !!(functionFlags & 1 /* Generator */); + var isAsync = !!(functionFlags & 2 /* Async */); + return isGenerator ? (_a = getIterationTypeOfGeneratorFunctionReturnType(1 /* Return */, returnType, isAsync)) !== null && _a !== void 0 ? _a : errorType : + isAsync ? (_b = getAwaitedType(returnType)) !== null && _b !== void 0 ? _b : errorType : + returnType; + } + function isUnwrappedReturnTypeVoidOrAny(func, returnType) { + var unwrappedReturnType = unwrapReturnType(returnType, ts.getFunctionFlags(func)); + return !!unwrappedReturnType && maybeTypeOfKind(unwrappedReturnType, 16384 /* Void */ | 3 /* AnyOrUnknown */); + } + function checkReturnStatement(node) { + var _a; + // Grammar checking + if (checkGrammarStatementInAmbientContext(node)) { + return; + } + var func = ts.getContainingFunction(node); + if (!func) { + grammarErrorOnFirstToken(node, ts.Diagnostics.A_return_statement_can_only_be_used_within_a_function_body); + return; + } + var signature = getSignatureFromDeclaration(func); + var returnType = getReturnTypeOfSignature(signature); + var functionFlags = ts.getFunctionFlags(func); + if (strictNullChecks || node.expression || returnType.flags & 131072 /* Never */) { + var exprType = node.expression ? checkExpressionCached(node.expression) : undefinedType; + if (func.kind === 164 /* SetAccessor */) { + if (node.expression) { + error(node, ts.Diagnostics.Setters_cannot_return_a_value); + } + } + else if (func.kind === 162 /* Constructor */) { + if (node.expression && !checkTypeAssignableToAndOptionallyElaborate(exprType, returnType, node, node.expression)) { + error(node, ts.Diagnostics.Return_type_of_constructor_signature_must_be_assignable_to_the_instance_type_of_the_class); + } + } + else if (getReturnTypeFromAnnotation(func)) { + var unwrappedReturnType = (_a = unwrapReturnType(returnType, functionFlags)) !== null && _a !== void 0 ? _a : returnType; + var unwrappedExprType = functionFlags & 2 /* Async */ + ? checkAwaitedType(exprType, node, ts.Diagnostics.The_return_type_of_an_async_function_must_either_be_a_valid_promise_or_must_not_contain_a_callable_then_member) + : exprType; + if (unwrappedReturnType) { + // If the function has a return type, but promisedType is + // undefined, an error will be reported in checkAsyncFunctionReturnType + // so we don't need to report one here. + checkTypeAssignableToAndOptionallyElaborate(unwrappedExprType, unwrappedReturnType, node, node.expression); + } + } + } + else if (func.kind !== 162 /* Constructor */ && compilerOptions.noImplicitReturns && !isUnwrappedReturnTypeVoidOrAny(func, returnType)) { + // The function has a return type, but the return statement doesn't have an expression. + error(node, ts.Diagnostics.Not_all_code_paths_return_a_value); + } + } + function checkWithStatement(node) { + // Grammar checking for withStatement + if (!checkGrammarStatementInAmbientContext(node)) { + if (node.flags & 32768 /* AwaitContext */) { + grammarErrorOnFirstToken(node, ts.Diagnostics.with_statements_are_not_allowed_in_an_async_function_block); + } + } + checkExpression(node.expression); + var sourceFile = ts.getSourceFileOfNode(node); + if (!hasParseDiagnostics(sourceFile)) { + var start = ts.getSpanOfTokenAtPosition(sourceFile, node.pos).start; + var end = node.statement.pos; + grammarErrorAtPos(sourceFile, start, end - start, ts.Diagnostics.The_with_statement_is_not_supported_All_symbols_in_a_with_block_will_have_type_any); + } + } + function checkSwitchStatement(node) { + // Grammar checking + checkGrammarStatementInAmbientContext(node); + var firstDefaultClause; + var hasDuplicateDefaultClause = false; + var expressionType = checkExpression(node.expression); + var expressionIsLiteral = isLiteralType(expressionType); + ts.forEach(node.caseBlock.clauses, function (clause) { + // Grammar check for duplicate default clauses, skip if we already report duplicate default clause + if (clause.kind === 278 /* DefaultClause */ && !hasDuplicateDefaultClause) { + if (firstDefaultClause === undefined) { + firstDefaultClause = clause; + } + else { + grammarErrorOnNode(clause, ts.Diagnostics.A_default_clause_cannot_appear_more_than_once_in_a_switch_statement); + hasDuplicateDefaultClause = true; + } + } + if (produceDiagnostics && clause.kind === 277 /* CaseClause */) { + // TypeScript 1.0 spec (April 2014): 5.9 + // In a 'switch' statement, each 'case' expression must be of a type that is comparable + // to or from the type of the 'switch' expression. + var caseType = checkExpression(clause.expression); + var caseIsLiteral = isLiteralType(caseType); + var comparedExpressionType = expressionType; + if (!caseIsLiteral || !expressionIsLiteral) { + caseType = caseIsLiteral ? getBaseTypeOfLiteralType(caseType) : caseType; + comparedExpressionType = getBaseTypeOfLiteralType(expressionType); + } + if (!isTypeEqualityComparableTo(comparedExpressionType, caseType)) { + // expressionType is not comparable to caseType, try the reversed check and report errors if it fails + checkTypeComparableTo(caseType, comparedExpressionType, clause.expression, /*headMessage*/ undefined); + } + } + ts.forEach(clause.statements, checkSourceElement); + if (compilerOptions.noFallthroughCasesInSwitch && clause.fallthroughFlowNode && isReachableFlowNode(clause.fallthroughFlowNode)) { + error(clause, ts.Diagnostics.Fallthrough_case_in_switch); + } + }); + if (node.caseBlock.locals) { + registerForUnusedIdentifiersCheck(node.caseBlock); + } + } + function checkLabeledStatement(node) { + // Grammar checking + if (!checkGrammarStatementInAmbientContext(node)) { + ts.findAncestor(node.parent, function (current) { + if (ts.isFunctionLike(current)) { + return "quit"; + } + if (current.kind === 238 /* LabeledStatement */ && current.label.escapedText === node.label.escapedText) { + grammarErrorOnNode(node.label, ts.Diagnostics.Duplicate_label_0, ts.getTextOfNode(node.label)); + return true; + } + return false; + }); + } + // ensure that label is unique + checkSourceElement(node.statement); + } + function checkThrowStatement(node) { + // Grammar checking + if (!checkGrammarStatementInAmbientContext(node)) { + if (node.expression === undefined) { + grammarErrorAfterFirstToken(node, ts.Diagnostics.Line_break_not_permitted_here); + } + } + if (node.expression) { + checkExpression(node.expression); + } + } + function checkTryStatement(node) { + // Grammar checking + checkGrammarStatementInAmbientContext(node); + checkBlock(node.tryBlock); + var catchClause = node.catchClause; + if (catchClause) { + // Grammar checking + if (catchClause.variableDeclaration) { + if (catchClause.variableDeclaration.type) { + grammarErrorOnFirstToken(catchClause.variableDeclaration.type, ts.Diagnostics.Catch_clause_variable_cannot_have_a_type_annotation); + } + else if (catchClause.variableDeclaration.initializer) { + grammarErrorOnFirstToken(catchClause.variableDeclaration.initializer, ts.Diagnostics.Catch_clause_variable_cannot_have_an_initializer); + } + else { + var blockLocals_1 = catchClause.block.locals; + if (blockLocals_1) { + ts.forEachKey(catchClause.locals, function (caughtName) { + var blockLocal = blockLocals_1.get(caughtName); + if (blockLocal && (blockLocal.flags & 2 /* BlockScopedVariable */) !== 0) { + grammarErrorOnNode(blockLocal.valueDeclaration, ts.Diagnostics.Cannot_redeclare_identifier_0_in_catch_clause, caughtName); + } + }); + } + } + } + checkBlock(catchClause.block); + } + if (node.finallyBlock) { + checkBlock(node.finallyBlock); + } + } + function checkIndexConstraints(type) { + var declaredNumberIndexer = getIndexDeclarationOfSymbol(type.symbol, 1 /* Number */); + var declaredStringIndexer = getIndexDeclarationOfSymbol(type.symbol, 0 /* String */); + var stringIndexType = getIndexTypeOfType(type, 0 /* String */); + var numberIndexType = getIndexTypeOfType(type, 1 /* Number */); + if (stringIndexType || numberIndexType) { + ts.forEach(getPropertiesOfObjectType(type), function (prop) { + var propType = getTypeOfSymbol(prop); + checkIndexConstraintForProperty(prop, propType, type, declaredStringIndexer, stringIndexType, 0 /* String */); + checkIndexConstraintForProperty(prop, propType, type, declaredNumberIndexer, numberIndexType, 1 /* Number */); + }); + var classDeclaration = type.symbol.valueDeclaration; + if (ts.getObjectFlags(type) & 1 /* Class */ && ts.isClassLike(classDeclaration)) { + for (var _i = 0, _a = classDeclaration.members; _i < _a.length; _i++) { + var member = _a[_i]; + // Only process instance properties with computed names here. + // Static properties cannot be in conflict with indexers, + // and properties with literal names were already checked. + if (!ts.hasModifier(member, 32 /* Static */) && hasNonBindableDynamicName(member)) { + var symbol = getSymbolOfNode(member); + var propType = getTypeOfSymbol(symbol); + checkIndexConstraintForProperty(symbol, propType, type, declaredStringIndexer, stringIndexType, 0 /* String */); + checkIndexConstraintForProperty(symbol, propType, type, declaredNumberIndexer, numberIndexType, 1 /* Number */); + } + } + } + } + var errorNode; + if (stringIndexType && numberIndexType) { + errorNode = declaredNumberIndexer || declaredStringIndexer; + // condition 'errorNode === undefined' may appear if types does not declare nor string neither number indexer + if (!errorNode && (ts.getObjectFlags(type) & 2 /* Interface */)) { + var someBaseTypeHasBothIndexers = ts.forEach(getBaseTypes(type), function (base) { return getIndexTypeOfType(base, 0 /* String */) && getIndexTypeOfType(base, 1 /* Number */); }); + errorNode = someBaseTypeHasBothIndexers ? undefined : type.symbol.declarations[0]; + } + } + if (errorNode && !isTypeAssignableTo(numberIndexType, stringIndexType)) { // TODO: GH#18217 + error(errorNode, ts.Diagnostics.Numeric_index_type_0_is_not_assignable_to_string_index_type_1, typeToString(numberIndexType), typeToString(stringIndexType)); + } + function checkIndexConstraintForProperty(prop, propertyType, containingType, indexDeclaration, indexType, indexKind) { + // ESSymbol properties apply to neither string nor numeric indexers. + if (!indexType || ts.isKnownSymbol(prop)) { + return; + } + var propDeclaration = prop.valueDeclaration; + var name = propDeclaration && ts.getNameOfDeclaration(propDeclaration); + if (name && ts.isPrivateIdentifier(name)) { + return; + } + // index is numeric and property name is not valid numeric literal + if (indexKind === 1 /* Number */ && !(name ? isNumericName(name) : isNumericLiteralName(prop.escapedName))) { + return; + } + // perform property check if property or indexer is declared in 'type' + // this allows us to rule out cases when both property and indexer are inherited from the base class + var errorNode; + if (propDeclaration && name && + (propDeclaration.kind === 209 /* BinaryExpression */ || + name.kind === 154 /* ComputedPropertyName */ || + prop.parent === containingType.symbol)) { + errorNode = propDeclaration; + } + else if (indexDeclaration) { + errorNode = indexDeclaration; + } + else if (ts.getObjectFlags(containingType) & 2 /* Interface */) { + // for interfaces property and indexer might be inherited from different bases + // check if any base class already has both property and indexer. + // check should be performed only if 'type' is the first type that brings property\indexer together + var someBaseClassHasBothPropertyAndIndexer = ts.forEach(getBaseTypes(containingType), function (base) { return getPropertyOfObjectType(base, prop.escapedName) && getIndexTypeOfType(base, indexKind); }); + errorNode = someBaseClassHasBothPropertyAndIndexer ? undefined : containingType.symbol.declarations[0]; + } + if (errorNode && !isTypeAssignableTo(propertyType, indexType)) { + var errorMessage = indexKind === 0 /* String */ + ? ts.Diagnostics.Property_0_of_type_1_is_not_assignable_to_string_index_type_2 + : ts.Diagnostics.Property_0_of_type_1_is_not_assignable_to_numeric_index_type_2; + error(errorNode, errorMessage, symbolToString(prop), typeToString(propertyType), typeToString(indexType)); + } + } + } + function checkTypeNameIsReserved(name, message) { + // TS 1.0 spec (April 2014): 3.6.1 + // The predefined type keywords are reserved and cannot be used as names of user defined types. + switch (name.escapedText) { + case "any": + case "unknown": + case "number": + case "bigint": + case "boolean": + case "string": + case "symbol": + case "void": + case "object": + error(name, message, name.escapedText); + } + } + /** + * The name cannot be used as 'Object' of user defined types with special target. + */ + function checkClassNameCollisionWithObject(name) { + if (languageVersion === 1 /* ES5 */ && name.escapedText === "Object" + && moduleKind < ts.ModuleKind.ES2015) { + error(name, ts.Diagnostics.Class_name_cannot_be_Object_when_targeting_ES5_with_module_0, ts.ModuleKind[moduleKind]); // https://github.com/Microsoft/TypeScript/issues/17494 + } + } + /** + * Check each type parameter and check that type parameters have no duplicate type parameter declarations + */ + function checkTypeParameters(typeParameterDeclarations) { + if (typeParameterDeclarations) { + var seenDefault = false; + for (var i = 0; i < typeParameterDeclarations.length; i++) { + var node = typeParameterDeclarations[i]; + checkTypeParameter(node); + if (produceDiagnostics) { + if (node.default) { + seenDefault = true; + checkTypeParametersNotReferenced(node.default, typeParameterDeclarations, i); + } + else if (seenDefault) { + error(node, ts.Diagnostics.Required_type_parameters_may_not_follow_optional_type_parameters); + } + for (var j = 0; j < i; j++) { + if (typeParameterDeclarations[j].symbol === node.symbol) { + error(node.name, ts.Diagnostics.Duplicate_identifier_0, ts.declarationNameToString(node.name)); + } + } + } + } + } + } + /** Check that type parameter defaults only reference previously declared type parameters */ + function checkTypeParametersNotReferenced(root, typeParameters, index) { + visit(root); + function visit(node) { + if (node.kind === 169 /* TypeReference */) { + var type = getTypeFromTypeReference(node); + if (type.flags & 262144 /* TypeParameter */) { + for (var i = index; i < typeParameters.length; i++) { + if (type.symbol === getSymbolOfNode(typeParameters[i])) { + error(node, ts.Diagnostics.Type_parameter_defaults_can_only_reference_previously_declared_type_parameters); + } + } + } + } + ts.forEachChild(node, visit); + } + } + /** Check that type parameter lists are identical across multiple declarations */ + function checkTypeParameterListsIdentical(symbol) { + if (symbol.declarations.length === 1) { + return; + } + var links = getSymbolLinks(symbol); + if (!links.typeParametersChecked) { + links.typeParametersChecked = true; + var declarations = getClassOrInterfaceDeclarationsOfSymbol(symbol); + if (declarations.length <= 1) { + return; + } + var type = getDeclaredTypeOfSymbol(symbol); + if (!areTypeParametersIdentical(declarations, type.localTypeParameters)) { + // Report an error on every conflicting declaration. + var name = symbolToString(symbol); + for (var _i = 0, declarations_6 = declarations; _i < declarations_6.length; _i++) { + var declaration = declarations_6[_i]; + error(declaration.name, ts.Diagnostics.All_declarations_of_0_must_have_identical_type_parameters, name); + } + } + } + } + function areTypeParametersIdentical(declarations, targetParameters) { + var maxTypeArgumentCount = ts.length(targetParameters); + var minTypeArgumentCount = getMinTypeArgumentCount(targetParameters); + for (var _i = 0, declarations_7 = declarations; _i < declarations_7.length; _i++) { + var declaration = declarations_7[_i]; + // If this declaration has too few or too many type parameters, we report an error + var sourceParameters = ts.getEffectiveTypeParameterDeclarations(declaration); + var numTypeParameters = sourceParameters.length; + if (numTypeParameters < minTypeArgumentCount || numTypeParameters > maxTypeArgumentCount) { + return false; + } + for (var i = 0; i < numTypeParameters; i++) { + var source = sourceParameters[i]; + var target = targetParameters[i]; + // If the type parameter node does not have the same as the resolved type + // parameter at this position, we report an error. + if (source.name.escapedText !== target.symbol.escapedName) { + return false; + } + // If the type parameter node does not have an identical constraint as the resolved + // type parameter at this position, we report an error. + var constraint = ts.getEffectiveConstraintOfTypeParameter(source); + var sourceConstraint = constraint && getTypeFromTypeNode(constraint); + var targetConstraint = getConstraintOfTypeParameter(target); + // relax check if later interface augmentation has no constraint, it's more broad and is OK to merge with + // a more constrained interface (this could be generalized to a full hierarchy check, but that's maybe overkill) + if (sourceConstraint && targetConstraint && !isTypeIdenticalTo(sourceConstraint, targetConstraint)) { + return false; + } + // If the type parameter node has a default and it is not identical to the default + // for the type parameter at this position, we report an error. + var sourceDefault = source.default && getTypeFromTypeNode(source.default); + var targetDefault = getDefaultFromTypeParameter(target); + if (sourceDefault && targetDefault && !isTypeIdenticalTo(sourceDefault, targetDefault)) { + return false; + } + } + } + return true; + } + function checkClassExpression(node) { + checkClassLikeDeclaration(node); + checkNodeDeferred(node); + return getTypeOfSymbol(getSymbolOfNode(node)); + } + function checkClassExpressionDeferred(node) { + ts.forEach(node.members, checkSourceElement); + registerForUnusedIdentifiersCheck(node); + } + function checkClassDeclaration(node) { + if (!node.name && !ts.hasModifier(node, 512 /* Default */)) { + grammarErrorOnFirstToken(node, ts.Diagnostics.A_class_declaration_without_the_default_modifier_must_have_a_name); + } + checkClassLikeDeclaration(node); + ts.forEach(node.members, checkSourceElement); + registerForUnusedIdentifiersCheck(node); + } + function checkClassLikeDeclaration(node) { + checkGrammarClassLikeDeclaration(node); + checkDecorators(node); + if (node.name) { + checkTypeNameIsReserved(node.name, ts.Diagnostics.Class_name_cannot_be_0); + checkCollisionWithRequireExportsInGeneratedCode(node, node.name); + checkCollisionWithGlobalPromiseInGeneratedCode(node, node.name); + if (!(node.flags & 8388608 /* Ambient */)) { + checkClassNameCollisionWithObject(node.name); + } + } + checkTypeParameters(ts.getEffectiveTypeParameterDeclarations(node)); + checkExportsOnMergedDeclarations(node); + var symbol = getSymbolOfNode(node); + var type = getDeclaredTypeOfSymbol(symbol); + var typeWithThis = getTypeWithThisArgument(type); + var staticType = getTypeOfSymbol(symbol); + checkTypeParameterListsIdentical(symbol); + checkClassForDuplicateDeclarations(node); + // Only check for reserved static identifiers on non-ambient context. + if (!(node.flags & 8388608 /* Ambient */)) { + checkClassForStaticPropertyNameConflicts(node); + } + var baseTypeNode = ts.getEffectiveBaseTypeNode(node); + if (baseTypeNode) { + ts.forEach(baseTypeNode.typeArguments, checkSourceElement); + if (languageVersion < 2 /* ES2015 */) { + checkExternalEmitHelpers(baseTypeNode.parent, 1 /* Extends */); + } + // check both @extends and extends if both are specified. + var extendsNode = ts.getClassExtendsHeritageElement(node); + if (extendsNode && extendsNode !== baseTypeNode) { + checkExpression(extendsNode.expression); + } + var baseTypes = getBaseTypes(type); + if (baseTypes.length && produceDiagnostics) { + var baseType_1 = baseTypes[0]; + var baseConstructorType = getBaseConstructorTypeOfClass(type); + var staticBaseType = getApparentType(baseConstructorType); + checkBaseTypeAccessibility(staticBaseType, baseTypeNode); + checkSourceElement(baseTypeNode.expression); + if (ts.some(baseTypeNode.typeArguments)) { + ts.forEach(baseTypeNode.typeArguments, checkSourceElement); + for (var _i = 0, _a = getConstructorsForTypeArguments(staticBaseType, baseTypeNode.typeArguments, baseTypeNode); _i < _a.length; _i++) { + var constructor = _a[_i]; + if (!checkTypeArgumentConstraints(baseTypeNode, constructor.typeParameters)) { + break; + } + } + } + var baseWithThis = getTypeWithThisArgument(baseType_1, type.thisType); + if (!checkTypeAssignableTo(typeWithThis, baseWithThis, /*errorNode*/ undefined)) { + issueMemberSpecificError(node, typeWithThis, baseWithThis, ts.Diagnostics.Class_0_incorrectly_extends_base_class_1); + } + else { + // Report static side error only when instance type is assignable + checkTypeAssignableTo(staticType, getTypeWithoutSignatures(staticBaseType), node.name || node, ts.Diagnostics.Class_static_side_0_incorrectly_extends_base_class_static_side_1); + } + if (baseConstructorType.flags & 8650752 /* TypeVariable */ && !isMixinConstructorType(staticType)) { + error(node.name || node, ts.Diagnostics.A_mixin_class_must_have_a_constructor_with_a_single_rest_parameter_of_type_any); + } + if (!(staticBaseType.symbol && staticBaseType.symbol.flags & 32 /* Class */) && !(baseConstructorType.flags & 8650752 /* TypeVariable */)) { + // When the static base type is a "class-like" constructor function (but not actually a class), we verify + // that all instantiated base constructor signatures return the same type. + var constructors = getInstantiatedConstructorsForTypeArguments(staticBaseType, baseTypeNode.typeArguments, baseTypeNode); + if (ts.forEach(constructors, function (sig) { return !isJSConstructor(sig.declaration) && !isTypeIdenticalTo(getReturnTypeOfSignature(sig), baseType_1); })) { + error(baseTypeNode.expression, ts.Diagnostics.Base_constructors_must_all_have_the_same_return_type); + } + } + checkKindsOfPropertyMemberOverrides(type, baseType_1); + } + } + var implementedTypeNodes = ts.getEffectiveImplementsTypeNodes(node); + if (implementedTypeNodes) { + for (var _b = 0, implementedTypeNodes_1 = implementedTypeNodes; _b < implementedTypeNodes_1.length; _b++) { + var typeRefNode = implementedTypeNodes_1[_b]; + if (!ts.isEntityNameExpression(typeRefNode.expression)) { + error(typeRefNode.expression, ts.Diagnostics.A_class_can_only_implement_an_identifier_Slashqualified_name_with_optional_type_arguments); + } + checkTypeReferenceNode(typeRefNode); + if (produceDiagnostics) { + var t = getReducedType(getTypeFromTypeNode(typeRefNode)); + if (t !== errorType) { + if (isValidBaseType(t)) { + var genericDiag = t.symbol && t.symbol.flags & 32 /* Class */ ? + ts.Diagnostics.Class_0_incorrectly_implements_class_1_Did_you_mean_to_extend_1_and_inherit_its_members_as_a_subclass : + ts.Diagnostics.Class_0_incorrectly_implements_interface_1; + var baseWithThis = getTypeWithThisArgument(t, type.thisType); + if (!checkTypeAssignableTo(typeWithThis, baseWithThis, /*errorNode*/ undefined)) { + issueMemberSpecificError(node, typeWithThis, baseWithThis, genericDiag); + } + } + else { + error(typeRefNode, ts.Diagnostics.A_class_can_only_implement_an_object_type_or_intersection_of_object_types_with_statically_known_members); + } + } + } + } + } + if (produceDiagnostics) { + checkIndexConstraints(type); + checkTypeForDuplicateIndexSignatures(node); + checkPropertyInitialization(node); + } + } + function issueMemberSpecificError(node, typeWithThis, baseWithThis, broadDiag) { + // iterate over all implemented properties and issue errors on each one which isn't compatible, rather than the class as a whole, if possible + var issuedMemberError = false; + var _loop_19 = function (member) { + if (ts.hasStaticModifier(member)) { + return "continue"; + } + var declaredProp = member.name && getSymbolAtLocation(member.name) || getSymbolAtLocation(member); + if (declaredProp) { + var prop = getPropertyOfType(typeWithThis, declaredProp.escapedName); + var baseProp = getPropertyOfType(baseWithThis, declaredProp.escapedName); + if (prop && baseProp) { + var rootChain = function () { return ts.chainDiagnosticMessages( + /*details*/ undefined, ts.Diagnostics.Property_0_in_type_1_is_not_assignable_to_the_same_property_in_base_type_2, symbolToString(declaredProp), typeToString(typeWithThis), typeToString(baseWithThis)); }; + if (!checkTypeAssignableTo(getTypeOfSymbol(prop), getTypeOfSymbol(baseProp), member.name || member, /*message*/ undefined, rootChain)) { + issuedMemberError = true; + } + } + } + }; + for (var _i = 0, _a = node.members; _i < _a.length; _i++) { + var member = _a[_i]; + _loop_19(member); + } + if (!issuedMemberError) { + // check again with diagnostics to generate a less-specific error + checkTypeAssignableTo(typeWithThis, baseWithThis, node.name || node, broadDiag); + } + } + function checkBaseTypeAccessibility(type, node) { + var signatures = getSignaturesOfType(type, 1 /* Construct */); + if (signatures.length) { + var declaration = signatures[0].declaration; + if (declaration && ts.hasModifier(declaration, 8 /* Private */)) { + var typeClassDeclaration = ts.getClassLikeDeclarationOfSymbol(type.symbol); + if (!isNodeWithinClass(node, typeClassDeclaration)) { + error(node, ts.Diagnostics.Cannot_extend_a_class_0_Class_constructor_is_marked_as_private, getFullyQualifiedName(type.symbol)); + } + } + } + } + function getTargetSymbol(s) { + // if symbol is instantiated its flags are not copied from the 'target' + // so we'll need to get back original 'target' symbol to work with correct set of flags + return ts.getCheckFlags(s) & 1 /* Instantiated */ ? s.target : s; + } + function getClassOrInterfaceDeclarationsOfSymbol(symbol) { + return ts.filter(symbol.declarations, function (d) { + return d.kind === 245 /* ClassDeclaration */ || d.kind === 246 /* InterfaceDeclaration */; + }); + } + function checkKindsOfPropertyMemberOverrides(type, baseType) { + // TypeScript 1.0 spec (April 2014): 8.2.3 + // A derived class inherits all members from its base class it doesn't override. + // Inheritance means that a derived class implicitly contains all non - overridden members of the base class. + // Both public and private property members are inherited, but only public property members can be overridden. + // A property member in a derived class is said to override a property member in a base class + // when the derived class property member has the same name and kind(instance or static) + // as the base class property member. + // The type of an overriding property member must be assignable(section 3.8.4) + // to the type of the overridden property member, or otherwise a compile - time error occurs. + // Base class instance member functions can be overridden by derived class instance member functions, + // but not by other kinds of members. + // Base class instance member variables and accessors can be overridden by + // derived class instance member variables and accessors, but not by other kinds of members. + // NOTE: assignability is checked in checkClassDeclaration + var baseProperties = getPropertiesOfType(baseType); + basePropertyCheck: for (var _i = 0, baseProperties_1 = baseProperties; _i < baseProperties_1.length; _i++) { + var baseProperty = baseProperties_1[_i]; + var base = getTargetSymbol(baseProperty); + if (base.flags & 4194304 /* Prototype */) { + continue; + } + var baseSymbol = getPropertyOfObjectType(type, base.escapedName); + if (!baseSymbol) { + continue; + } + var derived = getTargetSymbol(baseSymbol); + var baseDeclarationFlags = ts.getDeclarationModifierFlagsFromSymbol(base); + ts.Debug.assert(!!derived, "derived should point to something, even if it is the base class' declaration."); + // In order to resolve whether the inherited method was overridden in the base class or not, + // we compare the Symbols obtained. Since getTargetSymbol returns the symbol on the *uninstantiated* + // type declaration, derived and base resolve to the same symbol even in the case of generic classes. + if (derived === base) { + // derived class inherits base without override/redeclaration + var derivedClassDecl = ts.getClassLikeDeclarationOfSymbol(type.symbol); + // It is an error to inherit an abstract member without implementing it or being declared abstract. + // If there is no declaration for the derived class (as in the case of class expressions), + // then the class cannot be declared abstract. + if (baseDeclarationFlags & 128 /* Abstract */ && (!derivedClassDecl || !ts.hasModifier(derivedClassDecl, 128 /* Abstract */))) { + // Searches other base types for a declaration that would satisfy the inherited abstract member. + // (The class may have more than one base type via declaration merging with an interface with the + // same name.) + for (var _a = 0, _b = getBaseTypes(type); _a < _b.length; _a++) { + var otherBaseType = _b[_a]; + if (otherBaseType === baseType) + continue; + var baseSymbol_1 = getPropertyOfObjectType(otherBaseType, base.escapedName); + var derivedElsewhere = baseSymbol_1 && getTargetSymbol(baseSymbol_1); + if (derivedElsewhere && derivedElsewhere !== base) { + continue basePropertyCheck; + } + } + if (derivedClassDecl.kind === 214 /* ClassExpression */) { + error(derivedClassDecl, ts.Diagnostics.Non_abstract_class_expression_does_not_implement_inherited_abstract_member_0_from_class_1, symbolToString(baseProperty), typeToString(baseType)); + } + else { + error(derivedClassDecl, ts.Diagnostics.Non_abstract_class_0_does_not_implement_inherited_abstract_member_1_from_class_2, typeToString(type), symbolToString(baseProperty), typeToString(baseType)); + } + } + } + else { + // derived overrides base. + var derivedDeclarationFlags = ts.getDeclarationModifierFlagsFromSymbol(derived); + if (baseDeclarationFlags & 8 /* Private */ || derivedDeclarationFlags & 8 /* Private */) { + // either base or derived property is private - not override, skip it + continue; + } + var errorMessage = void 0; + var basePropertyFlags = base.flags & 98308 /* PropertyOrAccessor */; + var derivedPropertyFlags = derived.flags & 98308 /* PropertyOrAccessor */; + if (basePropertyFlags && derivedPropertyFlags) { + // property/accessor is overridden with property/accessor + if (!compilerOptions.useDefineForClassFields + || baseDeclarationFlags & 128 /* Abstract */ && !(base.valueDeclaration && ts.isPropertyDeclaration(base.valueDeclaration) && base.valueDeclaration.initializer) + || base.valueDeclaration && base.valueDeclaration.parent.kind === 246 /* InterfaceDeclaration */ + || derived.valueDeclaration && ts.isBinaryExpression(derived.valueDeclaration)) { + // when the base property is abstract or from an interface, base/derived flags don't need to match + // same when the derived property is from an assignment + continue; + } + var overriddenInstanceProperty = basePropertyFlags !== 4 /* Property */ && derivedPropertyFlags === 4 /* Property */; + var overriddenInstanceAccessor = basePropertyFlags === 4 /* Property */ && derivedPropertyFlags !== 4 /* Property */; + if (overriddenInstanceProperty || overriddenInstanceAccessor) { + var errorMessage_1 = overriddenInstanceProperty ? + ts.Diagnostics._0_is_defined_as_an_accessor_in_class_1_but_is_overridden_here_in_2_as_an_instance_property : + ts.Diagnostics._0_is_defined_as_a_property_in_class_1_but_is_overridden_here_in_2_as_an_accessor; + error(ts.getNameOfDeclaration(derived.valueDeclaration) || derived.valueDeclaration, errorMessage_1, symbolToString(base), typeToString(baseType), typeToString(type)); + } + else { + var uninitialized = ts.find(derived.declarations, function (d) { return d.kind === 159 /* PropertyDeclaration */ && !d.initializer; }); + if (uninitialized + && !(derived.flags & 33554432 /* Transient */) + && !(baseDeclarationFlags & 128 /* Abstract */) + && !(derivedDeclarationFlags & 128 /* Abstract */) + && !derived.declarations.some(function (d) { return !!(d.flags & 8388608 /* Ambient */); })) { + var constructor = findConstructorDeclaration(ts.getClassLikeDeclarationOfSymbol(type.symbol)); + var propName = uninitialized.name; + if (uninitialized.exclamationToken + || !constructor + || !ts.isIdentifier(propName) + || !strictNullChecks + || !isPropertyInitializedInConstructor(propName, type, constructor)) { + var errorMessage_2 = ts.Diagnostics.Property_0_will_overwrite_the_base_property_in_1_If_this_is_intentional_add_an_initializer_Otherwise_add_a_declare_modifier_or_remove_the_redundant_declaration; + error(ts.getNameOfDeclaration(derived.valueDeclaration) || derived.valueDeclaration, errorMessage_2, symbolToString(base), typeToString(baseType)); + } + } + } + // correct case + continue; + } + else if (isPrototypeProperty(base)) { + if (isPrototypeProperty(derived) || derived.flags & 4 /* Property */) { + // method is overridden with method or property -- correct case + continue; + } + else { + ts.Debug.assert(!!(derived.flags & 98304 /* Accessor */)); + errorMessage = ts.Diagnostics.Class_0_defines_instance_member_function_1_but_extended_class_2_defines_it_as_instance_member_accessor; + } + } + else if (base.flags & 98304 /* Accessor */) { + errorMessage = ts.Diagnostics.Class_0_defines_instance_member_accessor_1_but_extended_class_2_defines_it_as_instance_member_function; + } + else { + errorMessage = ts.Diagnostics.Class_0_defines_instance_member_property_1_but_extended_class_2_defines_it_as_instance_member_function; + } + error(ts.getNameOfDeclaration(derived.valueDeclaration) || derived.valueDeclaration, errorMessage, typeToString(baseType), symbolToString(base), typeToString(type)); + } + } + } + function getNonInterhitedProperties(type, baseTypes, properties) { + if (!ts.length(baseTypes)) { + return properties; + } + var seen = ts.createUnderscoreEscapedMap(); + ts.forEach(properties, function (p) { seen.set(p.escapedName, p); }); + for (var _i = 0, baseTypes_2 = baseTypes; _i < baseTypes_2.length; _i++) { + var base = baseTypes_2[_i]; + var properties_5 = getPropertiesOfType(getTypeWithThisArgument(base, type.thisType)); + for (var _a = 0, properties_4 = properties_5; _a < properties_4.length; _a++) { + var prop = properties_4[_a]; + var existing = seen.get(prop.escapedName); + if (existing && !isPropertyIdenticalTo(existing, prop)) { + seen.delete(prop.escapedName); + } + } + } + return ts.arrayFrom(seen.values()); + } + function checkInheritedPropertiesAreIdentical(type, typeNode) { + var baseTypes = getBaseTypes(type); + if (baseTypes.length < 2) { + return true; + } + var seen = ts.createUnderscoreEscapedMap(); + ts.forEach(resolveDeclaredMembers(type).declaredProperties, function (p) { seen.set(p.escapedName, { prop: p, containingType: type }); }); + var ok = true; + for (var _i = 0, baseTypes_3 = baseTypes; _i < baseTypes_3.length; _i++) { + var base = baseTypes_3[_i]; + var properties = getPropertiesOfType(getTypeWithThisArgument(base, type.thisType)); + for (var _a = 0, properties_6 = properties; _a < properties_6.length; _a++) { + var prop = properties_6[_a]; + var existing = seen.get(prop.escapedName); + if (!existing) { + seen.set(prop.escapedName, { prop: prop, containingType: base }); + } + else { + var isInheritedProperty = existing.containingType !== type; + if (isInheritedProperty && !isPropertyIdenticalTo(existing.prop, prop)) { + ok = false; + var typeName1 = typeToString(existing.containingType); + var typeName2 = typeToString(base); + var errorInfo = ts.chainDiagnosticMessages(/*details*/ undefined, ts.Diagnostics.Named_property_0_of_types_1_and_2_are_not_identical, symbolToString(prop), typeName1, typeName2); + errorInfo = ts.chainDiagnosticMessages(errorInfo, ts.Diagnostics.Interface_0_cannot_simultaneously_extend_types_1_and_2, typeToString(type), typeName1, typeName2); + diagnostics.add(ts.createDiagnosticForNodeFromMessageChain(typeNode, errorInfo)); + } + } + } + } + return ok; + } + function checkPropertyInitialization(node) { + if (!strictNullChecks || !strictPropertyInitialization || node.flags & 8388608 /* Ambient */) { + return; + } + var constructor = findConstructorDeclaration(node); + for (var _i = 0, _a = node.members; _i < _a.length; _i++) { + var member = _a[_i]; + if (ts.getModifierFlags(member) & 2 /* Ambient */) { + continue; + } + if (isInstancePropertyWithoutInitializer(member)) { + var propName = member.name; + if (ts.isIdentifier(propName) || ts.isPrivateIdentifier(propName)) { + var type = getTypeOfSymbol(getSymbolOfNode(member)); + if (!(type.flags & 3 /* AnyOrUnknown */ || getFalsyFlags(type) & 32768 /* Undefined */)) { + if (!constructor || !isPropertyInitializedInConstructor(propName, type, constructor)) { + error(member.name, ts.Diagnostics.Property_0_has_no_initializer_and_is_not_definitely_assigned_in_the_constructor, ts.declarationNameToString(propName)); + } + } + } + } + } + } + function isInstancePropertyWithoutInitializer(node) { + return node.kind === 159 /* PropertyDeclaration */ && + !ts.hasModifier(node, 32 /* Static */ | 128 /* Abstract */) && + !node.exclamationToken && + !node.initializer; + } + function isPropertyInitializedInConstructor(propName, propType, constructor) { + var reference = ts.createPropertyAccess(ts.createThis(), propName); + reference.expression.parent = reference; + reference.parent = constructor; + reference.flowNode = constructor.returnFlowNode; + var flowType = getFlowTypeOfReference(reference, propType, getOptionalType(propType)); + return !(getFalsyFlags(flowType) & 32768 /* Undefined */); + } + function checkInterfaceDeclaration(node) { + // Grammar checking + if (!checkGrammarDecoratorsAndModifiers(node)) + checkGrammarInterfaceDeclaration(node); + checkTypeParameters(node.typeParameters); + if (produceDiagnostics) { + checkTypeNameIsReserved(node.name, ts.Diagnostics.Interface_name_cannot_be_0); + checkExportsOnMergedDeclarations(node); + var symbol = getSymbolOfNode(node); + checkTypeParameterListsIdentical(symbol); + // Only check this symbol once + var firstInterfaceDecl = ts.getDeclarationOfKind(symbol, 246 /* InterfaceDeclaration */); + if (node === firstInterfaceDecl) { + var type = getDeclaredTypeOfSymbol(symbol); + var typeWithThis = getTypeWithThisArgument(type); + // run subsequent checks only if first set succeeded + if (checkInheritedPropertiesAreIdentical(type, node.name)) { + for (var _i = 0, _a = getBaseTypes(type); _i < _a.length; _i++) { + var baseType = _a[_i]; + checkTypeAssignableTo(typeWithThis, getTypeWithThisArgument(baseType, type.thisType), node.name, ts.Diagnostics.Interface_0_incorrectly_extends_interface_1); + } + checkIndexConstraints(type); + } + } + checkObjectTypeForDuplicateDeclarations(node); + } + ts.forEach(ts.getInterfaceBaseTypeNodes(node), function (heritageElement) { + if (!ts.isEntityNameExpression(heritageElement.expression)) { + error(heritageElement.expression, ts.Diagnostics.An_interface_can_only_extend_an_identifier_Slashqualified_name_with_optional_type_arguments); + } + checkTypeReferenceNode(heritageElement); + }); + ts.forEach(node.members, checkSourceElement); + if (produceDiagnostics) { + checkTypeForDuplicateIndexSignatures(node); + registerForUnusedIdentifiersCheck(node); + } + } + function checkTypeAliasDeclaration(node) { + // Grammar checking + checkGrammarDecoratorsAndModifiers(node); + checkTypeNameIsReserved(node.name, ts.Diagnostics.Type_alias_name_cannot_be_0); + checkExportsOnMergedDeclarations(node); + checkTypeParameters(node.typeParameters); + checkSourceElement(node.type); + registerForUnusedIdentifiersCheck(node); + } + function computeEnumMemberValues(node) { + var nodeLinks = getNodeLinks(node); + if (!(nodeLinks.flags & 16384 /* EnumValuesComputed */)) { + nodeLinks.flags |= 16384 /* EnumValuesComputed */; + var autoValue = 0; + for (var _i = 0, _a = node.members; _i < _a.length; _i++) { + var member = _a[_i]; + var value = computeMemberValue(member, autoValue); + getNodeLinks(member).enumMemberValue = value; + autoValue = typeof value === "number" ? value + 1 : undefined; + } + } + } + function computeMemberValue(member, autoValue) { + if (ts.isComputedNonLiteralName(member.name)) { + error(member.name, ts.Diagnostics.Computed_property_names_are_not_allowed_in_enums); + } + else { + var text = ts.getTextOfPropertyName(member.name); + if (isNumericLiteralName(text) && !isInfinityOrNaNString(text)) { + error(member.name, ts.Diagnostics.An_enum_member_cannot_have_a_numeric_name); + } + } + if (member.initializer) { + return computeConstantValue(member); + } + // In ambient non-const numeric enum declarations, enum members without initializers are + // considered computed members (as opposed to having auto-incremented values). + if (member.parent.flags & 8388608 /* Ambient */ && !ts.isEnumConst(member.parent) && getEnumKind(getSymbolOfNode(member.parent)) === 0 /* Numeric */) { + return undefined; + } + // If the member declaration specifies no value, the member is considered a constant enum member. + // If the member is the first member in the enum declaration, it is assigned the value zero. + // Otherwise, it is assigned the value of the immediately preceding member plus one, and an error + // occurs if the immediately preceding member is not a constant enum member. + if (autoValue !== undefined) { + return autoValue; + } + error(member.name, ts.Diagnostics.Enum_member_must_have_initializer); + return undefined; + } + function computeConstantValue(member) { + var enumKind = getEnumKind(getSymbolOfNode(member.parent)); + var isConstEnum = ts.isEnumConst(member.parent); + var initializer = member.initializer; + var value = enumKind === 1 /* Literal */ && !isLiteralEnumMember(member) ? undefined : evaluate(initializer); + if (value !== undefined) { + if (isConstEnum && typeof value === "number" && !isFinite(value)) { + error(initializer, isNaN(value) ? + ts.Diagnostics.const_enum_member_initializer_was_evaluated_to_disallowed_value_NaN : + ts.Diagnostics.const_enum_member_initializer_was_evaluated_to_a_non_finite_value); + } + } + else if (enumKind === 1 /* Literal */) { + error(initializer, ts.Diagnostics.Computed_values_are_not_permitted_in_an_enum_with_string_valued_members); + return 0; + } + else if (isConstEnum) { + error(initializer, ts.Diagnostics.const_enum_member_initializers_can_only_contain_literal_values_and_other_computed_enum_values); + } + else if (member.parent.flags & 8388608 /* Ambient */) { + error(initializer, ts.Diagnostics.In_ambient_enum_declarations_member_initializer_must_be_constant_expression); + } + else { + // Only here do we need to check that the initializer is assignable to the enum type. + var source = checkExpression(initializer); + if (!isTypeAssignableToKind(source, 296 /* NumberLike */)) { + error(initializer, ts.Diagnostics.Only_numeric_enums_can_have_computed_members_but_this_expression_has_type_0_If_you_do_not_need_exhaustiveness_checks_consider_using_an_object_literal_instead, typeToString(source)); + } + else { + checkTypeAssignableTo(source, getDeclaredTypeOfSymbol(getSymbolOfNode(member.parent)), initializer, /*headMessage*/ undefined); + } + } + return value; + function evaluate(expr) { + switch (expr.kind) { + case 207 /* PrefixUnaryExpression */: + var value_2 = evaluate(expr.operand); + if (typeof value_2 === "number") { + switch (expr.operator) { + case 39 /* PlusToken */: return value_2; + case 40 /* MinusToken */: return -value_2; + case 54 /* TildeToken */: return ~value_2; + } + } + break; + case 209 /* BinaryExpression */: + var left = evaluate(expr.left); + var right = evaluate(expr.right); + if (typeof left === "number" && typeof right === "number") { + switch (expr.operatorToken.kind) { + case 51 /* BarToken */: return left | right; + case 50 /* AmpersandToken */: return left & right; + case 48 /* GreaterThanGreaterThanToken */: return left >> right; + case 49 /* GreaterThanGreaterThanGreaterThanToken */: return left >>> right; + case 47 /* LessThanLessThanToken */: return left << right; + case 52 /* CaretToken */: return left ^ right; + case 41 /* AsteriskToken */: return left * right; + case 43 /* SlashToken */: return left / right; + case 39 /* PlusToken */: return left + right; + case 40 /* MinusToken */: return left - right; + case 44 /* PercentToken */: return left % right; + case 42 /* AsteriskAsteriskToken */: return Math.pow(left, right); + } + } + else if (typeof left === "string" && typeof right === "string" && expr.operatorToken.kind === 39 /* PlusToken */) { + return left + right; + } + break; + case 10 /* StringLiteral */: + case 14 /* NoSubstitutionTemplateLiteral */: + return expr.text; + case 8 /* NumericLiteral */: + checkGrammarNumericLiteral(expr); + return +expr.text; + case 200 /* ParenthesizedExpression */: + return evaluate(expr.expression); + case 75 /* Identifier */: + var identifier = expr; + if (isInfinityOrNaNString(identifier.escapedText)) { + return +(identifier.escapedText); + } + return ts.nodeIsMissing(expr) ? 0 : evaluateEnumMember(expr, getSymbolOfNode(member.parent), identifier.escapedText); + case 195 /* ElementAccessExpression */: + case 194 /* PropertyAccessExpression */: + var ex = expr; + if (isConstantMemberAccess(ex)) { + var type = getTypeOfExpression(ex.expression); + if (type.symbol && type.symbol.flags & 384 /* Enum */) { + var name = void 0; + if (ex.kind === 194 /* PropertyAccessExpression */) { + name = ex.name.escapedText; + } + else { + name = ts.escapeLeadingUnderscores(ts.cast(ex.argumentExpression, ts.isLiteralExpression).text); + } + return evaluateEnumMember(expr, type.symbol, name); + } + } + break; + } + return undefined; + } + function evaluateEnumMember(expr, enumSymbol, name) { + var memberSymbol = enumSymbol.exports.get(name); + if (memberSymbol) { + var declaration = memberSymbol.valueDeclaration; + if (declaration !== member) { + if (isBlockScopedNameDeclaredBeforeUse(declaration, member)) { + return getEnumMemberValue(declaration); + } + error(expr, ts.Diagnostics.A_member_initializer_in_a_enum_declaration_cannot_reference_members_declared_after_it_including_members_defined_in_other_enums); + return 0; + } + else { + error(expr, ts.Diagnostics.Property_0_is_used_before_being_assigned, symbolToString(memberSymbol)); + } + } + return undefined; + } + } + function isConstantMemberAccess(node) { + return node.kind === 75 /* Identifier */ || + node.kind === 194 /* PropertyAccessExpression */ && isConstantMemberAccess(node.expression) || + node.kind === 195 /* ElementAccessExpression */ && isConstantMemberAccess(node.expression) && + ts.isStringLiteralLike(node.argumentExpression); + } + function checkEnumDeclaration(node) { + if (!produceDiagnostics) { + return; + } + // Grammar checking + checkGrammarDecoratorsAndModifiers(node); + checkTypeNameIsReserved(node.name, ts.Diagnostics.Enum_name_cannot_be_0); + checkCollisionWithRequireExportsInGeneratedCode(node, node.name); + checkCollisionWithGlobalPromiseInGeneratedCode(node, node.name); + checkExportsOnMergedDeclarations(node); + node.members.forEach(checkEnumMember); + computeEnumMemberValues(node); + // Spec 2014 - Section 9.3: + // It isn't possible for one enum declaration to continue the automatic numbering sequence of another, + // and when an enum type has multiple declarations, only one declaration is permitted to omit a value + // for the first member. + // + // Only perform this check once per symbol + var enumSymbol = getSymbolOfNode(node); + var firstDeclaration = ts.getDeclarationOfKind(enumSymbol, node.kind); + if (node === firstDeclaration) { + if (enumSymbol.declarations.length > 1) { + var enumIsConst_1 = ts.isEnumConst(node); + // check that const is placed\omitted on all enum declarations + ts.forEach(enumSymbol.declarations, function (decl) { + if (ts.isEnumDeclaration(decl) && ts.isEnumConst(decl) !== enumIsConst_1) { + error(ts.getNameOfDeclaration(decl), ts.Diagnostics.Enum_declarations_must_all_be_const_or_non_const); + } + }); + } + var seenEnumMissingInitialInitializer_1 = false; + ts.forEach(enumSymbol.declarations, function (declaration) { + // return true if we hit a violation of the rule, false otherwise + if (declaration.kind !== 248 /* EnumDeclaration */) { + return false; + } + var enumDeclaration = declaration; + if (!enumDeclaration.members.length) { + return false; + } + var firstEnumMember = enumDeclaration.members[0]; + if (!firstEnumMember.initializer) { + if (seenEnumMissingInitialInitializer_1) { + error(firstEnumMember.name, ts.Diagnostics.In_an_enum_with_multiple_declarations_only_one_declaration_can_omit_an_initializer_for_its_first_enum_element); + } + else { + seenEnumMissingInitialInitializer_1 = true; + } + } + }); + } + } + function checkEnumMember(node) { + if (ts.isPrivateIdentifier(node.name)) { + error(node, ts.Diagnostics.An_enum_member_cannot_be_named_with_a_private_identifier); + } + } + function getFirstNonAmbientClassOrFunctionDeclaration(symbol) { + var declarations = symbol.declarations; + for (var _i = 0, declarations_8 = declarations; _i < declarations_8.length; _i++) { + var declaration = declarations_8[_i]; + if ((declaration.kind === 245 /* ClassDeclaration */ || + (declaration.kind === 244 /* FunctionDeclaration */ && ts.nodeIsPresent(declaration.body))) && + !(declaration.flags & 8388608 /* Ambient */)) { + return declaration; + } + } + return undefined; + } + function inSameLexicalScope(node1, node2) { + var container1 = ts.getEnclosingBlockScopeContainer(node1); + var container2 = ts.getEnclosingBlockScopeContainer(node2); + if (isGlobalSourceFile(container1)) { + return isGlobalSourceFile(container2); + } + else if (isGlobalSourceFile(container2)) { + return false; + } + else { + return container1 === container2; + } + } + function checkModuleDeclaration(node) { + if (produceDiagnostics) { + // Grammar checking + var isGlobalAugmentation = ts.isGlobalScopeAugmentation(node); + var inAmbientContext = node.flags & 8388608 /* Ambient */; + if (isGlobalAugmentation && !inAmbientContext) { + error(node.name, ts.Diagnostics.Augmentations_for_the_global_scope_should_have_declare_modifier_unless_they_appear_in_already_ambient_context); + } + var isAmbientExternalModule = ts.isAmbientModule(node); + var contextErrorMessage = isAmbientExternalModule + ? ts.Diagnostics.An_ambient_module_declaration_is_only_allowed_at_the_top_level_in_a_file + : ts.Diagnostics.A_namespace_declaration_is_only_allowed_in_a_namespace_or_module; + if (checkGrammarModuleElementContext(node, contextErrorMessage)) { + // If we hit a module declaration in an illegal context, just bail out to avoid cascading errors. + return; + } + if (!checkGrammarDecoratorsAndModifiers(node)) { + if (!inAmbientContext && node.name.kind === 10 /* StringLiteral */) { + grammarErrorOnNode(node.name, ts.Diagnostics.Only_ambient_modules_can_use_quoted_names); + } + } + if (ts.isIdentifier(node.name)) { + checkCollisionWithRequireExportsInGeneratedCode(node, node.name); + checkCollisionWithGlobalPromiseInGeneratedCode(node, node.name); + } + checkExportsOnMergedDeclarations(node); + var symbol = getSymbolOfNode(node); + // The following checks only apply on a non-ambient instantiated module declaration. + if (symbol.flags & 512 /* ValueModule */ + && !inAmbientContext + && symbol.declarations.length > 1 + && isInstantiatedModule(node, !!compilerOptions.preserveConstEnums || !!compilerOptions.isolatedModules)) { + var firstNonAmbientClassOrFunc = getFirstNonAmbientClassOrFunctionDeclaration(symbol); + if (firstNonAmbientClassOrFunc) { + if (ts.getSourceFileOfNode(node) !== ts.getSourceFileOfNode(firstNonAmbientClassOrFunc)) { + error(node.name, ts.Diagnostics.A_namespace_declaration_cannot_be_in_a_different_file_from_a_class_or_function_with_which_it_is_merged); + } + else if (node.pos < firstNonAmbientClassOrFunc.pos) { + error(node.name, ts.Diagnostics.A_namespace_declaration_cannot_be_located_prior_to_a_class_or_function_with_which_it_is_merged); + } + } + // if the module merges with a class declaration in the same lexical scope, + // we need to track this to ensure the correct emit. + var mergedClass = ts.getDeclarationOfKind(symbol, 245 /* ClassDeclaration */); + if (mergedClass && + inSameLexicalScope(node, mergedClass)) { + getNodeLinks(node).flags |= 32768 /* LexicalModuleMergesWithClass */; + } + } + if (isAmbientExternalModule) { + if (ts.isExternalModuleAugmentation(node)) { + // body of the augmentation should be checked for consistency only if augmentation was applied to its target (either global scope or module) + // otherwise we'll be swamped in cascading errors. + // We can detect if augmentation was applied using following rules: + // - augmentation for a global scope is always applied + // - augmentation for some external module is applied if symbol for augmentation is merged (it was combined with target module). + var checkBody = isGlobalAugmentation || (getSymbolOfNode(node).flags & 33554432 /* Transient */); + if (checkBody && node.body) { + for (var _i = 0, _a = node.body.statements; _i < _a.length; _i++) { + var statement = _a[_i]; + checkModuleAugmentationElement(statement, isGlobalAugmentation); + } + } + } + else if (isGlobalSourceFile(node.parent)) { + if (isGlobalAugmentation) { + error(node.name, ts.Diagnostics.Augmentations_for_the_global_scope_can_only_be_directly_nested_in_external_modules_or_ambient_module_declarations); + } + else if (ts.isExternalModuleNameRelative(ts.getTextOfIdentifierOrLiteral(node.name))) { + error(node.name, ts.Diagnostics.Ambient_module_declaration_cannot_specify_relative_module_name); + } + } + else { + if (isGlobalAugmentation) { + error(node.name, ts.Diagnostics.Augmentations_for_the_global_scope_can_only_be_directly_nested_in_external_modules_or_ambient_module_declarations); + } + else { + // Node is not an augmentation and is not located on the script level. + // This means that this is declaration of ambient module that is located in other module or namespace which is prohibited. + error(node.name, ts.Diagnostics.Ambient_modules_cannot_be_nested_in_other_modules_or_namespaces); + } + } + } + } + if (node.body) { + checkSourceElement(node.body); + if (!ts.isGlobalScopeAugmentation(node)) { + registerForUnusedIdentifiersCheck(node); + } + } + } + function checkModuleAugmentationElement(node, isGlobalAugmentation) { + switch (node.kind) { + case 225 /* VariableStatement */: + // error each individual name in variable statement instead of marking the entire variable statement + for (var _i = 0, _a = node.declarationList.declarations; _i < _a.length; _i++) { + var decl = _a[_i]; + checkModuleAugmentationElement(decl, isGlobalAugmentation); + } + break; + case 259 /* ExportAssignment */: + case 260 /* ExportDeclaration */: + grammarErrorOnFirstToken(node, ts.Diagnostics.Exports_and_export_assignments_are_not_permitted_in_module_augmentations); + break; + case 253 /* ImportEqualsDeclaration */: + case 254 /* ImportDeclaration */: + grammarErrorOnFirstToken(node, ts.Diagnostics.Imports_are_not_permitted_in_module_augmentations_Consider_moving_them_to_the_enclosing_external_module); + break; + case 191 /* BindingElement */: + case 242 /* VariableDeclaration */: + var name = node.name; + if (ts.isBindingPattern(name)) { + for (var _b = 0, _c = name.elements; _b < _c.length; _b++) { + var el = _c[_b]; + // mark individual names in binding pattern + checkModuleAugmentationElement(el, isGlobalAugmentation); + } + break; + } + // falls through + case 245 /* ClassDeclaration */: + case 248 /* EnumDeclaration */: + case 244 /* FunctionDeclaration */: + case 246 /* InterfaceDeclaration */: + case 249 /* ModuleDeclaration */: + case 247 /* TypeAliasDeclaration */: + if (isGlobalAugmentation) { + return; + } + var symbol = getSymbolOfNode(node); + if (symbol) { + // module augmentations cannot introduce new names on the top level scope of the module + // this is done it two steps + // 1. quick check - if symbol for node is not merged - this is local symbol to this augmentation - report error + // 2. main check - report error if value declaration of the parent symbol is module augmentation) + var reportError = !(symbol.flags & 33554432 /* Transient */); + if (!reportError) { + // symbol should not originate in augmentation + reportError = !!symbol.parent && ts.isExternalModuleAugmentation(symbol.parent.declarations[0]); + } + } + break; + } + } + function getFirstNonModuleExportsIdentifier(node) { + switch (node.kind) { + case 75 /* Identifier */: + return node; + case 153 /* QualifiedName */: + do { + node = node.left; + } while (node.kind !== 75 /* Identifier */); + return node; + case 194 /* PropertyAccessExpression */: + do { + if (ts.isModuleExportsAccessExpression(node.expression) && !ts.isPrivateIdentifier(node.name)) { + return node.name; + } + node = node.expression; + } while (node.kind !== 75 /* Identifier */); + return node; + } + } + function checkExternalImportOrExportDeclaration(node) { + var moduleName = ts.getExternalModuleName(node); + if (!moduleName || ts.nodeIsMissing(moduleName)) { + // Should be a parse error. + return false; + } + if (!ts.isStringLiteral(moduleName)) { + error(moduleName, ts.Diagnostics.String_literal_expected); + return false; + } + var inAmbientExternalModule = node.parent.kind === 250 /* ModuleBlock */ && ts.isAmbientModule(node.parent.parent); + if (node.parent.kind !== 290 /* SourceFile */ && !inAmbientExternalModule) { + error(moduleName, node.kind === 260 /* ExportDeclaration */ ? + ts.Diagnostics.Export_declarations_are_not_permitted_in_a_namespace : + ts.Diagnostics.Import_declarations_in_a_namespace_cannot_reference_a_module); + return false; + } + if (inAmbientExternalModule && ts.isExternalModuleNameRelative(moduleName.text)) { + // we have already reported errors on top level imports/exports in external module augmentations in checkModuleDeclaration + // no need to do this again. + if (!isTopLevelInExternalModuleAugmentation(node)) { + // TypeScript 1.0 spec (April 2013): 12.1.6 + // An ExternalImportDeclaration in an AmbientExternalModuleDeclaration may reference + // other external modules only through top - level external module names. + // Relative external module names are not permitted. + error(node, ts.Diagnostics.Import_or_export_declaration_in_an_ambient_module_declaration_cannot_reference_module_through_relative_module_name); + return false; + } + } + return true; + } + function checkAliasSymbol(node) { + var symbol = getSymbolOfNode(node); + var target = resolveAlias(symbol); + var shouldSkipWithJSExpandoTargets = symbol.flags & 67108864 /* Assignment */; + if (!shouldSkipWithJSExpandoTargets && target !== unknownSymbol) { + // For external modules symbol represents local symbol for an alias. + // This local symbol will merge any other local declarations (excluding other aliases) + // and symbol.flags will contains combined representation for all merged declaration. + // Based on symbol.flags we can compute a set of excluded meanings (meaning that resolved alias should not have, + // otherwise it will conflict with some local declaration). Note that in addition to normal flags we include matching SymbolFlags.Export* + // in order to prevent collisions with declarations that were exported from the current module (they still contribute to local names). + symbol = getMergedSymbol(symbol.exportSymbol || symbol); + var excludedMeanings = (symbol.flags & (111551 /* Value */ | 1048576 /* ExportValue */) ? 111551 /* Value */ : 0) | + (symbol.flags & 788968 /* Type */ ? 788968 /* Type */ : 0) | + (symbol.flags & 1920 /* Namespace */ ? 1920 /* Namespace */ : 0); + if (target.flags & excludedMeanings) { + var message = node.kind === 263 /* ExportSpecifier */ ? + ts.Diagnostics.Export_declaration_conflicts_with_exported_declaration_of_0 : + ts.Diagnostics.Import_declaration_conflicts_with_local_declaration_of_0; + error(node, message, symbolToString(symbol)); + } + // Don't allow to re-export something with no value side when `--isolatedModules` is set. + if (compilerOptions.isolatedModules + && node.kind === 263 /* ExportSpecifier */ + && !node.parent.parent.isTypeOnly + && !(target.flags & 111551 /* Value */) + && !(node.flags & 8388608 /* Ambient */)) { + error(node, ts.Diagnostics.Re_exporting_a_type_when_the_isolatedModules_flag_is_provided_requires_using_export_type); + } + } + } + function checkImportBinding(node) { + checkCollisionWithRequireExportsInGeneratedCode(node, node.name); + checkCollisionWithGlobalPromiseInGeneratedCode(node, node.name); + checkAliasSymbol(node); + } + function checkImportDeclaration(node) { + if (checkGrammarModuleElementContext(node, ts.Diagnostics.An_import_declaration_can_only_be_used_in_a_namespace_or_module)) { + // If we hit an import declaration in an illegal context, just bail out to avoid cascading errors. + return; + } + if (!checkGrammarDecoratorsAndModifiers(node) && ts.hasModifiers(node)) { + grammarErrorOnFirstToken(node, ts.Diagnostics.An_import_declaration_cannot_have_modifiers); + } + if (checkExternalImportOrExportDeclaration(node)) { + var importClause = node.importClause; + if (importClause && !checkGrammarImportClause(importClause)) { + if (importClause.name) { + checkImportBinding(importClause); + } + if (importClause.namedBindings) { + if (importClause.namedBindings.kind === 256 /* NamespaceImport */) { + checkImportBinding(importClause.namedBindings); + } + else { + var moduleExisted = resolveExternalModuleName(node, node.moduleSpecifier); + if (moduleExisted) { + ts.forEach(importClause.namedBindings.elements, checkImportBinding); + } + } + } + } + } + } + function checkImportEqualsDeclaration(node) { + if (checkGrammarModuleElementContext(node, ts.Diagnostics.An_import_declaration_can_only_be_used_in_a_namespace_or_module)) { + // If we hit an import declaration in an illegal context, just bail out to avoid cascading errors. + return; + } + checkGrammarDecoratorsAndModifiers(node); + if (ts.isInternalModuleImportEqualsDeclaration(node) || checkExternalImportOrExportDeclaration(node)) { + checkImportBinding(node); + if (ts.hasModifier(node, 1 /* Export */)) { + markExportAsReferenced(node); + } + if (node.moduleReference.kind !== 265 /* ExternalModuleReference */) { + var target = resolveAlias(getSymbolOfNode(node)); + if (target !== unknownSymbol) { + if (target.flags & 111551 /* Value */) { + // Target is a value symbol, check that it is not hidden by a local declaration with the same name + var moduleName = ts.getFirstIdentifier(node.moduleReference); + if (!(resolveEntityName(moduleName, 111551 /* Value */ | 1920 /* Namespace */).flags & 1920 /* Namespace */)) { + error(moduleName, ts.Diagnostics.Module_0_is_hidden_by_a_local_declaration_with_the_same_name, ts.declarationNameToString(moduleName)); + } + } + if (target.flags & 788968 /* Type */) { + checkTypeNameIsReserved(node.name, ts.Diagnostics.Import_name_cannot_be_0); + } + } + } + else { + if (moduleKind >= ts.ModuleKind.ES2015 && !(node.flags & 8388608 /* Ambient */)) { + // Import equals declaration is deprecated in es6 or above + grammarErrorOnNode(node, ts.Diagnostics.Import_assignment_cannot_be_used_when_targeting_ECMAScript_modules_Consider_using_import_Asterisk_as_ns_from_mod_import_a_from_mod_import_d_from_mod_or_another_module_format_instead); + } + } + } + } + function checkExportDeclaration(node) { + if (checkGrammarModuleElementContext(node, ts.Diagnostics.An_export_declaration_can_only_be_used_in_a_module)) { + // If we hit an export in an illegal context, just bail out to avoid cascading errors. + return; + } + if (!checkGrammarDecoratorsAndModifiers(node) && ts.hasModifiers(node)) { + grammarErrorOnFirstToken(node, ts.Diagnostics.An_export_declaration_cannot_have_modifiers); + } + if (node.moduleSpecifier && node.exportClause && ts.isNamedExports(node.exportClause) && ts.length(node.exportClause.elements) && languageVersion === 0 /* ES3 */) { + checkExternalEmitHelpers(node, 1048576 /* CreateBinding */); + } + checkGrammarExportDeclaration(node); + if (!node.moduleSpecifier || checkExternalImportOrExportDeclaration(node)) { + if (node.exportClause && !ts.isNamespaceExport(node.exportClause)) { + // export { x, y } + // export { x, y } from "foo" + ts.forEach(node.exportClause.elements, checkExportSpecifier); + var inAmbientExternalModule = node.parent.kind === 250 /* ModuleBlock */ && ts.isAmbientModule(node.parent.parent); + var inAmbientNamespaceDeclaration = !inAmbientExternalModule && node.parent.kind === 250 /* ModuleBlock */ && + !node.moduleSpecifier && node.flags & 8388608 /* Ambient */; + if (node.parent.kind !== 290 /* SourceFile */ && !inAmbientExternalModule && !inAmbientNamespaceDeclaration) { + error(node, ts.Diagnostics.Export_declarations_are_not_permitted_in_a_namespace); + } + } + else { + // export * from "foo" + var moduleSymbol = resolveExternalModuleName(node, node.moduleSpecifier); + if (moduleSymbol && hasExportAssignmentSymbol(moduleSymbol)) { + error(node.moduleSpecifier, ts.Diagnostics.Module_0_uses_export_and_cannot_be_used_with_export_Asterisk, symbolToString(moduleSymbol)); + } + else if (node.exportClause) { + checkAliasSymbol(node.exportClause); + } + if (moduleKind !== ts.ModuleKind.System && moduleKind < ts.ModuleKind.ES2015) { + checkExternalEmitHelpers(node, 65536 /* ExportStar */); + } + } + } + } + function checkGrammarExportDeclaration(node) { + var _a; + var isTypeOnlyExportStar = node.isTypeOnly && ((_a = node.exportClause) === null || _a === void 0 ? void 0 : _a.kind) !== 261 /* NamedExports */; + if (isTypeOnlyExportStar) { + grammarErrorOnNode(node, ts.Diagnostics.Only_named_exports_may_use_export_type); + } + return !isTypeOnlyExportStar; + } + function checkGrammarModuleElementContext(node, errorMessage) { + var isInAppropriateContext = node.parent.kind === 290 /* SourceFile */ || node.parent.kind === 250 /* ModuleBlock */ || node.parent.kind === 249 /* ModuleDeclaration */; + if (!isInAppropriateContext) { + grammarErrorOnFirstToken(node, errorMessage); + } + return !isInAppropriateContext; + } + function importClauseContainsReferencedImport(importClause) { + return ts.forEachImportClauseDeclaration(importClause, function (declaration) { + return !!getSymbolOfNode(declaration).isReferenced; + }); + } + function importClauseContainsConstEnumUsedAsValue(importClause) { + return ts.forEachImportClauseDeclaration(importClause, function (declaration) { + return !!getSymbolLinks(getSymbolOfNode(declaration)).constEnumReferenced; + }); + } + function checkImportsForTypeOnlyConversion(sourceFile) { + for (var _i = 0, _a = sourceFile.statements; _i < _a.length; _i++) { + var statement = _a[_i]; + if (ts.isImportDeclaration(statement) && + statement.importClause && + !statement.importClause.isTypeOnly && + importClauseContainsReferencedImport(statement.importClause) && + !isReferencedAliasDeclaration(statement.importClause, /*checkChildren*/ true) && + !importClauseContainsConstEnumUsedAsValue(statement.importClause)) { + error(statement, ts.Diagnostics.This_import_is_never_used_as_a_value_and_must_use_import_type_because_the_importsNotUsedAsValues_is_set_to_error); + } + } + } + function checkExportSpecifier(node) { + checkAliasSymbol(node); + if (ts.getEmitDeclarations(compilerOptions)) { + collectLinkedAliases(node.propertyName || node.name, /*setVisibility*/ true); + } + if (!node.parent.parent.moduleSpecifier) { + var exportedName = node.propertyName || node.name; + // find immediate value referenced by exported name (SymbolFlags.Alias is set so we don't chase down aliases) + var symbol = resolveName(exportedName, exportedName.escapedText, 111551 /* Value */ | 788968 /* Type */ | 1920 /* Namespace */ | 2097152 /* Alias */, + /*nameNotFoundMessage*/ undefined, /*nameArg*/ undefined, /*isUse*/ true); + if (symbol && (symbol === undefinedSymbol || symbol === globalThisSymbol || isGlobalSourceFile(getDeclarationContainer(symbol.declarations[0])))) { + error(exportedName, ts.Diagnostics.Cannot_export_0_Only_local_declarations_can_be_exported_from_a_module, ts.idText(exportedName)); + } + else { + markExportAsReferenced(node); + var target = symbol && (symbol.flags & 2097152 /* Alias */ ? resolveAlias(symbol) : symbol); + if (!target || target === unknownSymbol || target.flags & 111551 /* Value */) { + checkExpressionCached(node.propertyName || node.name); + } + } + } + } + function checkExportAssignment(node) { + if (checkGrammarModuleElementContext(node, ts.Diagnostics.An_export_assignment_can_only_be_used_in_a_module)) { + // If we hit an export assignment in an illegal context, just bail out to avoid cascading errors. + return; + } + var container = node.parent.kind === 290 /* SourceFile */ ? node.parent : node.parent.parent; + if (container.kind === 249 /* ModuleDeclaration */ && !ts.isAmbientModule(container)) { + if (node.isExportEquals) { + error(node, ts.Diagnostics.An_export_assignment_cannot_be_used_in_a_namespace); + } + else { + error(node, ts.Diagnostics.A_default_export_can_only_be_used_in_an_ECMAScript_style_module); + } + return; + } + // Grammar checking + if (!checkGrammarDecoratorsAndModifiers(node) && ts.hasModifiers(node)) { + grammarErrorOnFirstToken(node, ts.Diagnostics.An_export_assignment_cannot_have_modifiers); + } + if (node.expression.kind === 75 /* Identifier */) { + var id = node.expression; + var sym = resolveEntityName(id, 67108863 /* All */, /*ignoreErrors*/ true, /*dontResolveAlias*/ true, node); + if (sym) { + markAliasReferenced(sym, id); + // If not a value, we're interpreting the identifier as a type export, along the lines of (`export { Id as default }`) + var target = sym.flags & 2097152 /* Alias */ ? resolveAlias(sym) : sym; + if (target === unknownSymbol || target.flags & 111551 /* Value */) { + // However if it is a value, we need to check it's being used correctly + checkExpressionCached(node.expression); + } + } + if (ts.getEmitDeclarations(compilerOptions)) { + collectLinkedAliases(node.expression, /*setVisibility*/ true); + } + } + else { + checkExpressionCached(node.expression); + } + checkExternalModuleExports(container); + if ((node.flags & 8388608 /* Ambient */) && !ts.isEntityNameExpression(node.expression)) { + grammarErrorOnNode(node.expression, ts.Diagnostics.The_expression_of_an_export_assignment_must_be_an_identifier_or_qualified_name_in_an_ambient_context); + } + if (node.isExportEquals && !(node.flags & 8388608 /* Ambient */)) { + if (moduleKind >= ts.ModuleKind.ES2015) { + // export assignment is not supported in es6 modules + grammarErrorOnNode(node, ts.Diagnostics.Export_assignment_cannot_be_used_when_targeting_ECMAScript_modules_Consider_using_export_default_or_another_module_format_instead); + } + else if (moduleKind === ts.ModuleKind.System) { + // system modules does not support export assignment + grammarErrorOnNode(node, ts.Diagnostics.Export_assignment_is_not_supported_when_module_flag_is_system); + } + } + } + function hasExportedMembers(moduleSymbol) { + return ts.forEachEntry(moduleSymbol.exports, function (_, id) { return id !== "export="; }); + } + function checkExternalModuleExports(node) { + var moduleSymbol = getSymbolOfNode(node); + var links = getSymbolLinks(moduleSymbol); + if (!links.exportsChecked) { + var exportEqualsSymbol = moduleSymbol.exports.get("export="); + if (exportEqualsSymbol && hasExportedMembers(moduleSymbol)) { + var declaration = getDeclarationOfAliasSymbol(exportEqualsSymbol) || exportEqualsSymbol.valueDeclaration; + if (!isTopLevelInExternalModuleAugmentation(declaration) && !ts.isInJSFile(declaration)) { + error(declaration, ts.Diagnostics.An_export_assignment_cannot_be_used_in_a_module_with_other_exported_elements); + } + } + // Checks for export * conflicts + var exports_2 = getExportsOfModule(moduleSymbol); + if (exports_2) { + exports_2.forEach(function (_a, id) { + var declarations = _a.declarations, flags = _a.flags; + if (id === "__export") { + return; + } + // ECMA262: 15.2.1.1 It is a Syntax Error if the ExportedNames of ModuleItemList contains any duplicate entries. + // (TS Exceptions: namespaces, function overloads, enums, and interfaces) + if (flags & (1920 /* Namespace */ | 64 /* Interface */ | 384 /* Enum */)) { + return; + } + var exportedDeclarationsCount = ts.countWhere(declarations, isNotOverloadAndNotAccessor); + if (flags & 524288 /* TypeAlias */ && exportedDeclarationsCount <= 2) { + // it is legal to merge type alias with other values + // so count should be either 1 (just type alias) or 2 (type alias + merged value) + return; + } + if (exportedDeclarationsCount > 1) { + for (var _i = 0, declarations_9 = declarations; _i < declarations_9.length; _i++) { + var declaration = declarations_9[_i]; + if (isNotOverload(declaration)) { + diagnostics.add(ts.createDiagnosticForNode(declaration, ts.Diagnostics.Cannot_redeclare_exported_variable_0, ts.unescapeLeadingUnderscores(id))); + } + } + } + }); + } + links.exportsChecked = true; + } + } + function checkSourceElement(node) { + if (node) { + var saveCurrentNode = currentNode; + currentNode = node; + instantiationCount = 0; + checkSourceElementWorker(node); + currentNode = saveCurrentNode; + } + } + function checkSourceElementWorker(node) { + if (ts.isInJSFile(node)) { + ts.forEach(node.jsDoc, function (_a) { + var tags = _a.tags; + return ts.forEach(tags, checkSourceElement); + }); + } + var kind = node.kind; + if (cancellationToken) { + // Only bother checking on a few construct kinds. We don't want to be excessively + // hitting the cancellation token on every node we check. + switch (kind) { + case 249 /* ModuleDeclaration */: + case 245 /* ClassDeclaration */: + case 246 /* InterfaceDeclaration */: + case 244 /* FunctionDeclaration */: + cancellationToken.throwIfCancellationRequested(); + } + } + if (kind >= 225 /* FirstStatement */ && kind <= 241 /* LastStatement */ && node.flowNode && !isReachableFlowNode(node.flowNode)) { + errorOrSuggestion(compilerOptions.allowUnreachableCode === false, node, ts.Diagnostics.Unreachable_code_detected); + } + switch (kind) { + case 155 /* TypeParameter */: + return checkTypeParameter(node); + case 156 /* Parameter */: + return checkParameter(node); + case 159 /* PropertyDeclaration */: + return checkPropertyDeclaration(node); + case 158 /* PropertySignature */: + return checkPropertySignature(node); + case 170 /* FunctionType */: + case 171 /* ConstructorType */: + case 165 /* CallSignature */: + case 166 /* ConstructSignature */: + case 167 /* IndexSignature */: + return checkSignatureDeclaration(node); + case 161 /* MethodDeclaration */: + case 160 /* MethodSignature */: + return checkMethodDeclaration(node); + case 162 /* Constructor */: + return checkConstructorDeclaration(node); + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + return checkAccessorDeclaration(node); + case 169 /* TypeReference */: + return checkTypeReferenceNode(node); + case 168 /* TypePredicate */: + return checkTypePredicate(node); + case 172 /* TypeQuery */: + return checkTypeQuery(node); + case 173 /* TypeLiteral */: + return checkTypeLiteral(node); + case 174 /* ArrayType */: + return checkArrayType(node); + case 175 /* TupleType */: + return checkTupleType(node); + case 178 /* UnionType */: + case 179 /* IntersectionType */: + return checkUnionOrIntersectionType(node); + case 182 /* ParenthesizedType */: + case 176 /* OptionalType */: + case 177 /* RestType */: + return checkSourceElement(node.type); + case 183 /* ThisType */: + return checkThisType(node); + case 184 /* TypeOperator */: + return checkTypeOperator(node); + case 180 /* ConditionalType */: + return checkConditionalType(node); + case 181 /* InferType */: + return checkInferType(node); + case 188 /* ImportType */: + return checkImportType(node); + case 307 /* JSDocAugmentsTag */: + return checkJSDocAugmentsTag(node); + case 308 /* JSDocImplementsTag */: + return checkJSDocImplementsTag(node); + case 322 /* JSDocTypedefTag */: + case 315 /* JSDocCallbackTag */: + case 316 /* JSDocEnumTag */: + return checkJSDocTypeAliasTag(node); + case 321 /* JSDocTemplateTag */: + return checkJSDocTemplateTag(node); + case 320 /* JSDocTypeTag */: + return checkJSDocTypeTag(node); + case 317 /* JSDocParameterTag */: + return checkJSDocParameterTag(node); + case 323 /* JSDocPropertyTag */: + return checkJSDocPropertyTag(node); + case 300 /* JSDocFunctionType */: + checkJSDocFunctionType(node); + // falls through + case 298 /* JSDocNonNullableType */: + case 297 /* JSDocNullableType */: + case 295 /* JSDocAllType */: + case 296 /* JSDocUnknownType */: + case 304 /* JSDocTypeLiteral */: + checkJSDocTypeIsInJsFile(node); + ts.forEachChild(node, checkSourceElement); + return; + case 301 /* JSDocVariadicType */: + checkJSDocVariadicType(node); + return; + case 294 /* JSDocTypeExpression */: + return checkSourceElement(node.type); + case 185 /* IndexedAccessType */: + return checkIndexedAccessType(node); + case 186 /* MappedType */: + return checkMappedType(node); + case 244 /* FunctionDeclaration */: + return checkFunctionDeclaration(node); + case 223 /* Block */: + case 250 /* ModuleBlock */: + return checkBlock(node); + case 225 /* VariableStatement */: + return checkVariableStatement(node); + case 226 /* ExpressionStatement */: + return checkExpressionStatement(node); + case 227 /* IfStatement */: + return checkIfStatement(node); + case 228 /* DoStatement */: + return checkDoStatement(node); + case 229 /* WhileStatement */: + return checkWhileStatement(node); + case 230 /* ForStatement */: + return checkForStatement(node); + case 231 /* ForInStatement */: + return checkForInStatement(node); + case 232 /* ForOfStatement */: + return checkForOfStatement(node); + case 233 /* ContinueStatement */: + case 234 /* BreakStatement */: + return checkBreakOrContinueStatement(node); + case 235 /* ReturnStatement */: + return checkReturnStatement(node); + case 236 /* WithStatement */: + return checkWithStatement(node); + case 237 /* SwitchStatement */: + return checkSwitchStatement(node); + case 238 /* LabeledStatement */: + return checkLabeledStatement(node); + case 239 /* ThrowStatement */: + return checkThrowStatement(node); + case 240 /* TryStatement */: + return checkTryStatement(node); + case 242 /* VariableDeclaration */: + return checkVariableDeclaration(node); + case 191 /* BindingElement */: + return checkBindingElement(node); + case 245 /* ClassDeclaration */: + return checkClassDeclaration(node); + case 246 /* InterfaceDeclaration */: + return checkInterfaceDeclaration(node); + case 247 /* TypeAliasDeclaration */: + return checkTypeAliasDeclaration(node); + case 248 /* EnumDeclaration */: + return checkEnumDeclaration(node); + case 249 /* ModuleDeclaration */: + return checkModuleDeclaration(node); + case 254 /* ImportDeclaration */: + return checkImportDeclaration(node); + case 253 /* ImportEqualsDeclaration */: + return checkImportEqualsDeclaration(node); + case 260 /* ExportDeclaration */: + return checkExportDeclaration(node); + case 259 /* ExportAssignment */: + return checkExportAssignment(node); + case 224 /* EmptyStatement */: + case 241 /* DebuggerStatement */: + checkGrammarStatementInAmbientContext(node); + return; + case 264 /* MissingDeclaration */: + return checkMissingDeclaration(node); + } + } + function checkJSDocTypeIsInJsFile(node) { + if (!ts.isInJSFile(node)) { + grammarErrorOnNode(node, ts.Diagnostics.JSDoc_types_can_only_be_used_inside_documentation_comments); + } + } + function checkJSDocVariadicType(node) { + checkJSDocTypeIsInJsFile(node); + checkSourceElement(node.type); + // Only legal location is in the *last* parameter tag or last parameter of a JSDoc function. + var parent = node.parent; + if (ts.isParameter(parent) && ts.isJSDocFunctionType(parent.parent)) { + if (ts.last(parent.parent.parameters) !== parent) { + error(node, ts.Diagnostics.A_rest_parameter_must_be_last_in_a_parameter_list); + } + return; + } + if (!ts.isJSDocTypeExpression(parent)) { + error(node, ts.Diagnostics.JSDoc_may_only_appear_in_the_last_parameter_of_a_signature); + } + var paramTag = node.parent.parent; + if (!ts.isJSDocParameterTag(paramTag)) { + error(node, ts.Diagnostics.JSDoc_may_only_appear_in_the_last_parameter_of_a_signature); + return; + } + var param = ts.getParameterSymbolFromJSDoc(paramTag); + if (!param) { + // We will error in `checkJSDocParameterTag`. + return; + } + var host = ts.getHostSignatureFromJSDoc(paramTag); + if (!host || ts.last(host.parameters).symbol !== param) { + error(node, ts.Diagnostics.A_rest_parameter_must_be_last_in_a_parameter_list); + } + } + function getTypeFromJSDocVariadicType(node) { + var type = getTypeFromTypeNode(node.type); + var parent = node.parent; + var paramTag = node.parent.parent; + if (ts.isJSDocTypeExpression(node.parent) && ts.isJSDocParameterTag(paramTag)) { + // Else we will add a diagnostic, see `checkJSDocVariadicType`. + var host_1 = ts.getHostSignatureFromJSDoc(paramTag); + if (host_1) { + /* + Only return an array type if the corresponding parameter is marked as a rest parameter, or if there are no parameters. + So in the following situation we will not create an array type: + /** @param {...number} a * / + function f(a) {} + Because `a` will just be of type `number | undefined`. A synthetic `...args` will also be added, which *will* get an array type. + */ + var lastParamDeclaration = ts.lastOrUndefined(host_1.parameters); + var symbol = ts.getParameterSymbolFromJSDoc(paramTag); + if (!lastParamDeclaration || + symbol && lastParamDeclaration.symbol === symbol && ts.isRestParameter(lastParamDeclaration)) { + return createArrayType(type); + } + } + } + if (ts.isParameter(parent) && ts.isJSDocFunctionType(parent.parent)) { + return createArrayType(type); + } + return addOptionality(type); + } + // Function and class expression bodies are checked after all statements in the enclosing body. This is + // to ensure constructs like the following are permitted: + // const foo = function () { + // const s = foo(); + // return "hello"; + // } + // Here, performing a full type check of the body of the function expression whilst in the process of + // determining the type of foo would cause foo to be given type any because of the recursive reference. + // Delaying the type check of the body ensures foo has been assigned a type. + function checkNodeDeferred(node) { + var enclosingFile = ts.getSourceFileOfNode(node); + var links = getNodeLinks(enclosingFile); + if (!(links.flags & 1 /* TypeChecked */)) { + links.deferredNodes = links.deferredNodes || ts.createMap(); + var id = "" + getNodeId(node); + links.deferredNodes.set(id, node); + } + } + function checkDeferredNodes(context) { + var links = getNodeLinks(context); + if (links.deferredNodes) { + links.deferredNodes.forEach(checkDeferredNode); + } + } + function checkDeferredNode(node) { + var saveCurrentNode = currentNode; + currentNode = node; + instantiationCount = 0; + switch (node.kind) { + case 196 /* CallExpression */: + case 197 /* NewExpression */: + case 198 /* TaggedTemplateExpression */: + case 157 /* Decorator */: + case 268 /* JsxOpeningElement */: + // These node kinds are deferred checked when overload resolution fails + // To save on work, we ensure the arguments are checked just once, in + // a deferred way + resolveUntypedCall(node); + break; + case 201 /* FunctionExpression */: + case 202 /* ArrowFunction */: + case 161 /* MethodDeclaration */: + case 160 /* MethodSignature */: + checkFunctionExpressionOrObjectLiteralMethodDeferred(node); + break; + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + checkAccessorDeclaration(node); + break; + case 214 /* ClassExpression */: + checkClassExpressionDeferred(node); + break; + case 267 /* JsxSelfClosingElement */: + checkJsxSelfClosingElementDeferred(node); + break; + case 266 /* JsxElement */: + checkJsxElementDeferred(node); + break; + } + currentNode = saveCurrentNode; + } + function checkSourceFile(node) { + ts.performance.mark("beforeCheck"); + checkSourceFileWorker(node); + ts.performance.mark("afterCheck"); + ts.performance.measure("Check", "beforeCheck", "afterCheck"); + } + function unusedIsError(kind, isAmbient) { + if (isAmbient) { + return false; + } + switch (kind) { + case 0 /* Local */: + return !!compilerOptions.noUnusedLocals; + case 1 /* Parameter */: + return !!compilerOptions.noUnusedParameters; + default: + return ts.Debug.assertNever(kind); + } + } + function getPotentiallyUnusedIdentifiers(sourceFile) { + return allPotentiallyUnusedIdentifiers.get(sourceFile.path) || ts.emptyArray; + } + // Fully type check a source file and collect the relevant diagnostics. + function checkSourceFileWorker(node) { + var links = getNodeLinks(node); + if (!(links.flags & 1 /* TypeChecked */)) { + if (ts.skipTypeChecking(node, compilerOptions, host)) { + return; + } + // Grammar checking + checkGrammarSourceFile(node); + ts.clear(potentialThisCollisions); + ts.clear(potentialNewTargetCollisions); + ts.clear(potentialWeakMapCollisions); + ts.forEach(node.statements, checkSourceElement); + checkSourceElement(node.endOfFileToken); + checkDeferredNodes(node); + if (ts.isExternalOrCommonJsModule(node)) { + registerForUnusedIdentifiersCheck(node); + } + if (!node.isDeclarationFile && (compilerOptions.noUnusedLocals || compilerOptions.noUnusedParameters)) { + checkUnusedIdentifiers(getPotentiallyUnusedIdentifiers(node), function (containingNode, kind, diag) { + if (!ts.containsParseError(containingNode) && unusedIsError(kind, !!(containingNode.flags & 8388608 /* Ambient */))) { + diagnostics.add(diag); + } + }); + } + if (compilerOptions.importsNotUsedAsValues === 2 /* Error */ && + !node.isDeclarationFile && + ts.isExternalModule(node)) { + checkImportsForTypeOnlyConversion(node); + } + if (ts.isExternalOrCommonJsModule(node)) { + checkExternalModuleExports(node); + } + if (potentialThisCollisions.length) { + ts.forEach(potentialThisCollisions, checkIfThisIsCapturedInEnclosingScope); + ts.clear(potentialThisCollisions); + } + if (potentialNewTargetCollisions.length) { + ts.forEach(potentialNewTargetCollisions, checkIfNewTargetIsCapturedInEnclosingScope); + ts.clear(potentialNewTargetCollisions); + } + if (potentialWeakMapCollisions.length) { + ts.forEach(potentialWeakMapCollisions, checkWeakMapCollision); + ts.clear(potentialWeakMapCollisions); + } + links.flags |= 1 /* TypeChecked */; + } + } + function getDiagnostics(sourceFile, ct) { + try { + // Record the cancellation token so it can be checked later on during checkSourceElement. + // Do this in a finally block so we can ensure that it gets reset back to nothing after + // this call is done. + cancellationToken = ct; + return getDiagnosticsWorker(sourceFile); + } + finally { + cancellationToken = undefined; + } + } + function getDiagnosticsWorker(sourceFile) { + throwIfNonDiagnosticsProducing(); + if (sourceFile) { + // Some global diagnostics are deferred until they are needed and + // may not be reported in the first call to getGlobalDiagnostics. + // We should catch these changes and report them. + var previousGlobalDiagnostics = diagnostics.getGlobalDiagnostics(); + var previousGlobalDiagnosticsSize = previousGlobalDiagnostics.length; + checkSourceFile(sourceFile); + var semanticDiagnostics = diagnostics.getDiagnostics(sourceFile.fileName); + var currentGlobalDiagnostics = diagnostics.getGlobalDiagnostics(); + if (currentGlobalDiagnostics !== previousGlobalDiagnostics) { + // If the arrays are not the same reference, new diagnostics were added. + var deferredGlobalDiagnostics = ts.relativeComplement(previousGlobalDiagnostics, currentGlobalDiagnostics, ts.compareDiagnostics); + return ts.concatenate(deferredGlobalDiagnostics, semanticDiagnostics); + } + else if (previousGlobalDiagnosticsSize === 0 && currentGlobalDiagnostics.length > 0) { + // If the arrays are the same reference, but the length has changed, a single + // new diagnostic was added as DiagnosticCollection attempts to reuse the + // same array. + return ts.concatenate(currentGlobalDiagnostics, semanticDiagnostics); + } + return semanticDiagnostics; + } + // Global diagnostics are always added when a file is not provided to + // getDiagnostics + ts.forEach(host.getSourceFiles(), checkSourceFile); + return diagnostics.getDiagnostics(); + } + function getGlobalDiagnostics() { + throwIfNonDiagnosticsProducing(); + return diagnostics.getGlobalDiagnostics(); + } + function throwIfNonDiagnosticsProducing() { + if (!produceDiagnostics) { + throw new Error("Trying to get diagnostics from a type checker that does not produce them."); + } + } + // Language service support + function getSymbolsInScope(location, meaning) { + if (location.flags & 16777216 /* InWithStatement */) { + // We cannot answer semantic questions within a with block, do not proceed any further + return []; + } + var symbols = ts.createSymbolTable(); + var isStatic = false; + populateSymbols(); + symbols.delete("this" /* This */); // Not a symbol, a keyword + return symbolsToArray(symbols); + function populateSymbols() { + while (location) { + if (location.locals && !isGlobalSourceFile(location)) { + copySymbols(location.locals, meaning); + } + switch (location.kind) { + case 290 /* SourceFile */: + if (!ts.isExternalOrCommonJsModule(location)) + break; + // falls through + case 249 /* ModuleDeclaration */: + copySymbols(getSymbolOfNode(location).exports, meaning & 2623475 /* ModuleMember */); + break; + case 248 /* EnumDeclaration */: + copySymbols(getSymbolOfNode(location).exports, meaning & 8 /* EnumMember */); + break; + case 214 /* ClassExpression */: + var className = location.name; + if (className) { + copySymbol(location.symbol, meaning); + } + // this fall-through is necessary because we would like to handle + // type parameter inside class expression similar to how we handle it in classDeclaration and interface Declaration. + // falls through + case 245 /* ClassDeclaration */: + case 246 /* InterfaceDeclaration */: + // If we didn't come from static member of class or interface, + // add the type parameters into the symbol table + // (type parameters of classDeclaration/classExpression and interface are in member property of the symbol. + // Note: that the memberFlags come from previous iteration. + if (!isStatic) { + copySymbols(getMembersOfSymbol(getSymbolOfNode(location)), meaning & 788968 /* Type */); + } + break; + case 201 /* FunctionExpression */: + var funcName = location.name; + if (funcName) { + copySymbol(location.symbol, meaning); + } + break; + } + if (ts.introducesArgumentsExoticObject(location)) { + copySymbol(argumentsSymbol, meaning); + } + isStatic = ts.hasModifier(location, 32 /* Static */); + location = location.parent; + } + copySymbols(globals, meaning); + } + /** + * Copy the given symbol into symbol tables if the symbol has the given meaning + * and it doesn't already existed in the symbol table + * @param key a key for storing in symbol table; if undefined, use symbol.name + * @param symbol the symbol to be added into symbol table + * @param meaning meaning of symbol to filter by before adding to symbol table + */ + function copySymbol(symbol, meaning) { + if (ts.getCombinedLocalAndExportSymbolFlags(symbol) & meaning) { + var id = symbol.escapedName; + // We will copy all symbol regardless of its reserved name because + // symbolsToArray will check whether the key is a reserved name and + // it will not copy symbol with reserved name to the array + if (!symbols.has(id)) { + symbols.set(id, symbol); + } + } + } + function copySymbols(source, meaning) { + if (meaning) { + source.forEach(function (symbol) { + copySymbol(symbol, meaning); + }); + } + } + } + function isTypeDeclarationName(name) { + return name.kind === 75 /* Identifier */ && + isTypeDeclaration(name.parent) && + name.parent.name === name; + } + function isTypeDeclaration(node) { + switch (node.kind) { + case 155 /* TypeParameter */: + case 245 /* ClassDeclaration */: + case 246 /* InterfaceDeclaration */: + case 247 /* TypeAliasDeclaration */: + case 248 /* EnumDeclaration */: + return true; + case 255 /* ImportClause */: + return node.isTypeOnly; + case 258 /* ImportSpecifier */: + case 263 /* ExportSpecifier */: + return node.parent.parent.isTypeOnly; + default: + return false; + } + } + // True if the given identifier is part of a type reference + function isTypeReferenceIdentifier(node) { + while (node.parent.kind === 153 /* QualifiedName */) { + node = node.parent; + } + return node.parent.kind === 169 /* TypeReference */; + } + function isHeritageClauseElementIdentifier(node) { + while (node.parent.kind === 194 /* PropertyAccessExpression */) { + node = node.parent; + } + return node.parent.kind === 216 /* ExpressionWithTypeArguments */; + } + function forEachEnclosingClass(node, callback) { + var result; + while (true) { + node = ts.getContainingClass(node); + if (!node) + break; + if (result = callback(node)) + break; + } + return result; + } + function isNodeUsedDuringClassInitialization(node) { + return !!ts.findAncestor(node, function (element) { + if (ts.isConstructorDeclaration(element) && ts.nodeIsPresent(element.body) || ts.isPropertyDeclaration(element)) { + return true; + } + else if (ts.isClassLike(element) || ts.isFunctionLikeDeclaration(element)) { + return "quit"; + } + return false; + }); + } + function isNodeWithinClass(node, classDeclaration) { + return !!forEachEnclosingClass(node, function (n) { return n === classDeclaration; }); + } + function getLeftSideOfImportEqualsOrExportAssignment(nodeOnRightSide) { + while (nodeOnRightSide.parent.kind === 153 /* QualifiedName */) { + nodeOnRightSide = nodeOnRightSide.parent; + } + if (nodeOnRightSide.parent.kind === 253 /* ImportEqualsDeclaration */) { + return nodeOnRightSide.parent.moduleReference === nodeOnRightSide ? nodeOnRightSide.parent : undefined; + } + if (nodeOnRightSide.parent.kind === 259 /* ExportAssignment */) { + return nodeOnRightSide.parent.expression === nodeOnRightSide ? nodeOnRightSide.parent : undefined; + } + return undefined; + } + function isInRightSideOfImportOrExportAssignment(node) { + return getLeftSideOfImportEqualsOrExportAssignment(node) !== undefined; + } + function getSpecialPropertyAssignmentSymbolFromEntityName(entityName) { + var specialPropertyAssignmentKind = ts.getAssignmentDeclarationKind(entityName.parent.parent); + switch (specialPropertyAssignmentKind) { + case 1 /* ExportsProperty */: + case 3 /* PrototypeProperty */: + return getSymbolOfNode(entityName.parent); + case 4 /* ThisProperty */: + case 2 /* ModuleExports */: + case 5 /* Property */: + return getSymbolOfNode(entityName.parent.parent); + } + } + function isImportTypeQualifierPart(node) { + var parent = node.parent; + while (ts.isQualifiedName(parent)) { + node = parent; + parent = parent.parent; + } + if (parent && parent.kind === 188 /* ImportType */ && parent.qualifier === node) { + return parent; + } + return undefined; + } + function getSymbolOfNameOrPropertyAccessExpression(name) { + if (ts.isDeclarationName(name)) { + return getSymbolOfNode(name.parent); + } + if (ts.isInJSFile(name) && + name.parent.kind === 194 /* PropertyAccessExpression */ && + name.parent === name.parent.parent.left) { + // Check if this is a special property assignment + if (!ts.isPrivateIdentifier(name)) { + var specialPropertyAssignmentSymbol = getSpecialPropertyAssignmentSymbolFromEntityName(name); + if (specialPropertyAssignmentSymbol) { + return specialPropertyAssignmentSymbol; + } + } + } + if (name.parent.kind === 259 /* ExportAssignment */ && ts.isEntityNameExpression(name)) { + // Even an entity name expression that doesn't resolve as an entityname may still typecheck as a property access expression + var success = resolveEntityName(name, + /*all meanings*/ 111551 /* Value */ | 788968 /* Type */ | 1920 /* Namespace */ | 2097152 /* Alias */, /*ignoreErrors*/ true); + if (success && success !== unknownSymbol) { + return success; + } + } + else if (!ts.isPropertyAccessExpression(name) && !ts.isPrivateIdentifier(name) && isInRightSideOfImportOrExportAssignment(name)) { + // Since we already checked for ExportAssignment, this really could only be an Import + var importEqualsDeclaration = ts.getAncestor(name, 253 /* ImportEqualsDeclaration */); + ts.Debug.assert(importEqualsDeclaration !== undefined); + return getSymbolOfPartOfRightHandSideOfImportEquals(name, /*dontResolveAlias*/ true); + } + if (!ts.isPropertyAccessExpression(name) && !ts.isPrivateIdentifier(name)) { + var possibleImportNode = isImportTypeQualifierPart(name); + if (possibleImportNode) { + getTypeFromTypeNode(possibleImportNode); + var sym = getNodeLinks(name).resolvedSymbol; + return sym === unknownSymbol ? undefined : sym; + } + } + while (ts.isRightSideOfQualifiedNameOrPropertyAccess(name)) { + name = name.parent; + } + if (isHeritageClauseElementIdentifier(name)) { + var meaning = 0 /* None */; + // In an interface or class, we're definitely interested in a type. + if (name.parent.kind === 216 /* ExpressionWithTypeArguments */) { + meaning = 788968 /* Type */; + // In a class 'extends' clause we are also looking for a value. + if (ts.isExpressionWithTypeArgumentsInClassExtendsClause(name.parent)) { + meaning |= 111551 /* Value */; + } + } + else { + meaning = 1920 /* Namespace */; + } + meaning |= 2097152 /* Alias */; + var entityNameSymbol = ts.isEntityNameExpression(name) ? resolveEntityName(name, meaning) : undefined; + if (entityNameSymbol) { + return entityNameSymbol; + } + } + if (name.parent.kind === 317 /* JSDocParameterTag */) { + return ts.getParameterSymbolFromJSDoc(name.parent); + } + if (name.parent.kind === 155 /* TypeParameter */ && name.parent.parent.kind === 321 /* JSDocTemplateTag */) { + ts.Debug.assert(!ts.isInJSFile(name)); // Otherwise `isDeclarationName` would have been true. + var typeParameter = ts.getTypeParameterFromJsDoc(name.parent); + return typeParameter && typeParameter.symbol; + } + if (ts.isExpressionNode(name)) { + if (ts.nodeIsMissing(name)) { + // Missing entity name. + return undefined; + } + if (name.kind === 75 /* Identifier */) { + if (ts.isJSXTagName(name) && isJsxIntrinsicIdentifier(name)) { + var symbol = getIntrinsicTagSymbol(name.parent); + return symbol === unknownSymbol ? undefined : symbol; + } + return resolveEntityName(name, 111551 /* Value */, /*ignoreErrors*/ false, /*dontResolveAlias*/ true); + } + else if (name.kind === 194 /* PropertyAccessExpression */ || name.kind === 153 /* QualifiedName */) { + var links = getNodeLinks(name); + if (links.resolvedSymbol) { + return links.resolvedSymbol; + } + if (name.kind === 194 /* PropertyAccessExpression */) { + checkPropertyAccessExpression(name); + } + else { + checkQualifiedName(name); + } + return links.resolvedSymbol; + } + } + else if (isTypeReferenceIdentifier(name)) { + var meaning = name.parent.kind === 169 /* TypeReference */ ? 788968 /* Type */ : 1920 /* Namespace */; + return resolveEntityName(name, meaning, /*ignoreErrors*/ false, /*dontResolveAlias*/ true); + } + if (name.parent.kind === 168 /* TypePredicate */) { + return resolveEntityName(name, /*meaning*/ 1 /* FunctionScopedVariable */); + } + // Do we want to return undefined here? + return undefined; + } + function getSymbolAtLocation(node, ignoreErrors) { + if (node.kind === 290 /* SourceFile */) { + return ts.isExternalModule(node) ? getMergedSymbol(node.symbol) : undefined; + } + var parent = node.parent; + var grandParent = parent.parent; + if (node.flags & 16777216 /* InWithStatement */) { + // We cannot answer semantic questions within a with block, do not proceed any further + return undefined; + } + if (isDeclarationNameOrImportPropertyName(node)) { + // This is a declaration, call getSymbolOfNode + var parentSymbol = getSymbolOfNode(parent); + return ts.isImportOrExportSpecifier(node.parent) && node.parent.propertyName === node + ? getImmediateAliasedSymbol(parentSymbol) + : parentSymbol; + } + else if (ts.isLiteralComputedPropertyDeclarationName(node)) { + return getSymbolOfNode(parent.parent); + } + if (node.kind === 75 /* Identifier */) { + if (isInRightSideOfImportOrExportAssignment(node)) { + return getSymbolOfNameOrPropertyAccessExpression(node); + } + else if (parent.kind === 191 /* BindingElement */ && + grandParent.kind === 189 /* ObjectBindingPattern */ && + node === parent.propertyName) { + var typeOfPattern = getTypeOfNode(grandParent); + var propertyDeclaration = getPropertyOfType(typeOfPattern, node.escapedText); + if (propertyDeclaration) { + return propertyDeclaration; + } + } + } + switch (node.kind) { + case 75 /* Identifier */: + case 76 /* PrivateIdentifier */: + case 194 /* PropertyAccessExpression */: + case 153 /* QualifiedName */: + return getSymbolOfNameOrPropertyAccessExpression(node); + case 104 /* ThisKeyword */: + var container = ts.getThisContainer(node, /*includeArrowFunctions*/ false); + if (ts.isFunctionLike(container)) { + var sig = getSignatureFromDeclaration(container); + if (sig.thisParameter) { + return sig.thisParameter; + } + } + if (ts.isInExpressionContext(node)) { + return checkExpression(node).symbol; + } + // falls through + case 183 /* ThisType */: + return getTypeFromThisTypeNode(node).symbol; + case 102 /* SuperKeyword */: + return checkExpression(node).symbol; + case 129 /* ConstructorKeyword */: + // constructor keyword for an overload, should take us to the definition if it exist + var constructorDeclaration = node.parent; + if (constructorDeclaration && constructorDeclaration.kind === 162 /* Constructor */) { + return constructorDeclaration.parent.symbol; + } + return undefined; + case 10 /* StringLiteral */: + case 14 /* NoSubstitutionTemplateLiteral */: + // 1). import x = require("./mo/*gotToDefinitionHere*/d") + // 2). External module name in an import declaration + // 3). Dynamic import call or require in javascript + // 4). type A = import("./f/*gotToDefinitionHere*/oo") + if ((ts.isExternalModuleImportEqualsDeclaration(node.parent.parent) && ts.getExternalModuleImportEqualsDeclarationExpression(node.parent.parent) === node) || + ((node.parent.kind === 254 /* ImportDeclaration */ || node.parent.kind === 260 /* ExportDeclaration */) && node.parent.moduleSpecifier === node) || + ((ts.isInJSFile(node) && ts.isRequireCall(node.parent, /*checkArgumentIsStringLiteralLike*/ false)) || ts.isImportCall(node.parent)) || + (ts.isLiteralTypeNode(node.parent) && ts.isLiteralImportTypeNode(node.parent.parent) && node.parent.parent.argument === node.parent)) { + return resolveExternalModuleName(node, node, ignoreErrors); + } + if (ts.isCallExpression(parent) && ts.isBindableObjectDefinePropertyCall(parent) && parent.arguments[1] === node) { + return getSymbolOfNode(parent); + } + // falls through + case 8 /* NumericLiteral */: + // index access + var objectType = ts.isElementAccessExpression(parent) + ? parent.argumentExpression === node ? getTypeOfExpression(parent.expression) : undefined + : ts.isLiteralTypeNode(parent) && ts.isIndexedAccessTypeNode(grandParent) + ? getTypeFromTypeNode(grandParent.objectType) + : undefined; + return objectType && getPropertyOfType(objectType, ts.escapeLeadingUnderscores(node.text)); + case 84 /* DefaultKeyword */: + case 94 /* FunctionKeyword */: + case 38 /* EqualsGreaterThanToken */: + case 80 /* ClassKeyword */: + return getSymbolOfNode(node.parent); + case 188 /* ImportType */: + return ts.isLiteralImportTypeNode(node) ? getSymbolAtLocation(node.argument.literal, ignoreErrors) : undefined; + case 89 /* ExportKeyword */: + return ts.isExportAssignment(node.parent) ? ts.Debug.checkDefined(node.parent.symbol) : undefined; + default: + return undefined; + } + } + function getShorthandAssignmentValueSymbol(location) { + if (location && location.kind === 282 /* ShorthandPropertyAssignment */) { + return resolveEntityName(location.name, 111551 /* Value */ | 2097152 /* Alias */); + } + return undefined; + } + /** Returns the target of an export specifier without following aliases */ + function getExportSpecifierLocalTargetSymbol(node) { + return node.parent.parent.moduleSpecifier ? + getExternalModuleMember(node.parent.parent, node) : + resolveEntityName(node.propertyName || node.name, 111551 /* Value */ | 788968 /* Type */ | 1920 /* Namespace */ | 2097152 /* Alias */); + } + function getTypeOfNode(node) { + if (node.flags & 16777216 /* InWithStatement */) { + // We cannot answer semantic questions within a with block, do not proceed any further + return errorType; + } + var classDecl = ts.tryGetClassImplementingOrExtendingExpressionWithTypeArguments(node); + var classType = classDecl && getDeclaredTypeOfClassOrInterface(getSymbolOfNode(classDecl.class)); + if (ts.isPartOfTypeNode(node)) { + var typeFromTypeNode = getTypeFromTypeNode(node); + return classType ? getTypeWithThisArgument(typeFromTypeNode, classType.thisType) : typeFromTypeNode; + } + if (ts.isExpressionNode(node)) { + return getRegularTypeOfExpression(node); + } + if (classType && !classDecl.isImplements) { + // A SyntaxKind.ExpressionWithTypeArguments is considered a type node, except when it occurs in the + // extends clause of a class. We handle that case here. + var baseType = ts.firstOrUndefined(getBaseTypes(classType)); + return baseType ? getTypeWithThisArgument(baseType, classType.thisType) : errorType; + } + if (isTypeDeclaration(node)) { + // In this case, we call getSymbolOfNode instead of getSymbolAtLocation because it is a declaration + var symbol = getSymbolOfNode(node); + return getDeclaredTypeOfSymbol(symbol); + } + if (isTypeDeclarationName(node)) { + var symbol = getSymbolAtLocation(node); + return symbol ? getDeclaredTypeOfSymbol(symbol) : errorType; + } + if (ts.isDeclaration(node)) { + // In this case, we call getSymbolOfNode instead of getSymbolAtLocation because it is a declaration + var symbol = getSymbolOfNode(node); + return getTypeOfSymbol(symbol); + } + if (isDeclarationNameOrImportPropertyName(node)) { + var symbol = getSymbolAtLocation(node); + if (symbol) { + return getTypeOfSymbol(symbol); + } + return errorType; + } + if (ts.isBindingPattern(node)) { + return getTypeForVariableLikeDeclaration(node.parent, /*includeOptionality*/ true) || errorType; + } + if (isInRightSideOfImportOrExportAssignment(node)) { + var symbol = getSymbolAtLocation(node); + if (symbol) { + var declaredType = getDeclaredTypeOfSymbol(symbol); + return declaredType !== errorType ? declaredType : getTypeOfSymbol(symbol); + } + } + return errorType; + } + // Gets the type of object literal or array literal of destructuring assignment. + // { a } from + // for ( { a } of elems) { + // } + // [ a ] from + // [a] = [ some array ...] + function getTypeOfAssignmentPattern(expr) { + ts.Debug.assert(expr.kind === 193 /* ObjectLiteralExpression */ || expr.kind === 192 /* ArrayLiteralExpression */); + // If this is from "for of" + // for ( { a } of elems) { + // } + if (expr.parent.kind === 232 /* ForOfStatement */) { + var iteratedType = checkRightHandSideOfForOf(expr.parent); + return checkDestructuringAssignment(expr, iteratedType || errorType); + } + // If this is from "for" initializer + // for ({a } = elems[0];.....) { } + if (expr.parent.kind === 209 /* BinaryExpression */) { + var iteratedType = getTypeOfExpression(expr.parent.right); + return checkDestructuringAssignment(expr, iteratedType || errorType); + } + // If this is from nested object binding pattern + // for ({ skills: { primary, secondary } } = multiRobot, i = 0; i < 1; i++) { + if (expr.parent.kind === 281 /* PropertyAssignment */) { + var node_4 = ts.cast(expr.parent.parent, ts.isObjectLiteralExpression); + var typeOfParentObjectLiteral = getTypeOfAssignmentPattern(node_4) || errorType; + var propertyIndex = ts.indexOfNode(node_4.properties, expr.parent); + return checkObjectLiteralDestructuringPropertyAssignment(node_4, typeOfParentObjectLiteral, propertyIndex); + } + // Array literal assignment - array destructuring pattern + var node = ts.cast(expr.parent, ts.isArrayLiteralExpression); + // [{ property1: p1, property2 }] = elems; + var typeOfArrayLiteral = getTypeOfAssignmentPattern(node) || errorType; + var elementType = checkIteratedTypeOrElementType(65 /* Destructuring */, typeOfArrayLiteral, undefinedType, expr.parent) || errorType; + return checkArrayLiteralDestructuringElementAssignment(node, typeOfArrayLiteral, node.elements.indexOf(expr), elementType); + } + // Gets the property symbol corresponding to the property in destructuring assignment + // 'property1' from + // for ( { property1: a } of elems) { + // } + // 'property1' at location 'a' from: + // [a] = [ property1, property2 ] + function getPropertySymbolOfDestructuringAssignment(location) { + // Get the type of the object or array literal and then look for property of given name in the type + var typeOfObjectLiteral = getTypeOfAssignmentPattern(ts.cast(location.parent.parent, ts.isAssignmentPattern)); + return typeOfObjectLiteral && getPropertyOfType(typeOfObjectLiteral, location.escapedText); + } + function getRegularTypeOfExpression(expr) { + if (ts.isRightSideOfQualifiedNameOrPropertyAccess(expr)) { + expr = expr.parent; + } + return getRegularTypeOfLiteralType(getTypeOfExpression(expr)); + } + /** + * Gets either the static or instance type of a class element, based on + * whether the element is declared as "static". + */ + function getParentTypeOfClassElement(node) { + var classSymbol = getSymbolOfNode(node.parent); + return ts.hasModifier(node, 32 /* Static */) + ? getTypeOfSymbol(classSymbol) + : getDeclaredTypeOfSymbol(classSymbol); + } + function getClassElementPropertyKeyType(element) { + var name = element.name; + switch (name.kind) { + case 75 /* Identifier */: + return getLiteralType(ts.idText(name)); + case 8 /* NumericLiteral */: + case 10 /* StringLiteral */: + return getLiteralType(name.text); + case 154 /* ComputedPropertyName */: + var nameType = checkComputedPropertyName(name); + return isTypeAssignableToKind(nameType, 12288 /* ESSymbolLike */) ? nameType : stringType; + default: + return ts.Debug.fail("Unsupported property name."); + } + } + // Return the list of properties of the given type, augmented with properties from Function + // if the type has call or construct signatures + function getAugmentedPropertiesOfType(type) { + type = getApparentType(type); + var propsByName = ts.createSymbolTable(getPropertiesOfType(type)); + var functionType = getSignaturesOfType(type, 0 /* Call */).length ? globalCallableFunctionType : + getSignaturesOfType(type, 1 /* Construct */).length ? globalNewableFunctionType : + undefined; + if (functionType) { + ts.forEach(getPropertiesOfType(functionType), function (p) { + if (!propsByName.has(p.escapedName)) { + propsByName.set(p.escapedName, p); + } + }); + } + return getNamedMembers(propsByName); + } + function typeHasCallOrConstructSignatures(type) { + return ts.typeHasCallOrConstructSignatures(type, checker); + } + function getRootSymbols(symbol) { + var roots = getImmediateRootSymbols(symbol); + return roots ? ts.flatMap(roots, getRootSymbols) : [symbol]; + } + function getImmediateRootSymbols(symbol) { + if (ts.getCheckFlags(symbol) & 6 /* Synthetic */) { + return ts.mapDefined(getSymbolLinks(symbol).containingType.types, function (type) { return getPropertyOfType(type, symbol.escapedName); }); + } + else if (symbol.flags & 33554432 /* Transient */) { + var _a = symbol, leftSpread = _a.leftSpread, rightSpread = _a.rightSpread, syntheticOrigin = _a.syntheticOrigin; + return leftSpread ? [leftSpread, rightSpread] + : syntheticOrigin ? [syntheticOrigin] + : ts.singleElementArray(tryGetAliasTarget(symbol)); + } + return undefined; + } + function tryGetAliasTarget(symbol) { + var target; + var next = symbol; + while (next = getSymbolLinks(next).target) { + target = next; + } + return target; + } + // Emitter support + function isArgumentsLocalBinding(nodeIn) { + if (!ts.isGeneratedIdentifier(nodeIn)) { + var node = ts.getParseTreeNode(nodeIn, ts.isIdentifier); + if (node) { + var isPropertyName_1 = node.parent.kind === 194 /* PropertyAccessExpression */ && node.parent.name === node; + return !isPropertyName_1 && getReferencedValueSymbol(node) === argumentsSymbol; + } + } + return false; + } + function moduleExportsSomeValue(moduleReferenceExpression) { + var moduleSymbol = resolveExternalModuleName(moduleReferenceExpression.parent, moduleReferenceExpression); + if (!moduleSymbol || ts.isShorthandAmbientModuleSymbol(moduleSymbol)) { + // If the module is not found or is shorthand, assume that it may export a value. + return true; + } + var hasExportAssignment = hasExportAssignmentSymbol(moduleSymbol); + // if module has export assignment then 'resolveExternalModuleSymbol' will return resolved symbol for export assignment + // otherwise it will return moduleSymbol itself + moduleSymbol = resolveExternalModuleSymbol(moduleSymbol); + var symbolLinks = getSymbolLinks(moduleSymbol); + if (symbolLinks.exportsSomeValue === undefined) { + // for export assignments - check if resolved symbol for RHS is itself a value + // otherwise - check if at least one export is value + symbolLinks.exportsSomeValue = hasExportAssignment + ? !!(moduleSymbol.flags & 111551 /* Value */) + : ts.forEachEntry(getExportsOfModule(moduleSymbol), isValue); + } + return symbolLinks.exportsSomeValue; + function isValue(s) { + s = resolveSymbol(s); + return s && !!(s.flags & 111551 /* Value */); + } + } + function isNameOfModuleOrEnumDeclaration(node) { + return ts.isModuleOrEnumDeclaration(node.parent) && node === node.parent.name; + } + // When resolved as an expression identifier, if the given node references an exported entity, return the declaration + // node of the exported entity's container. Otherwise, return undefined. + function getReferencedExportContainer(nodeIn, prefixLocals) { + var node = ts.getParseTreeNode(nodeIn, ts.isIdentifier); + if (node) { + // When resolving the export container for the name of a module or enum + // declaration, we need to start resolution at the declaration's container. + // Otherwise, we could incorrectly resolve the export container as the + // declaration if it contains an exported member with the same name. + var symbol = getReferencedValueSymbol(node, /*startInDeclarationContainer*/ isNameOfModuleOrEnumDeclaration(node)); + if (symbol) { + if (symbol.flags & 1048576 /* ExportValue */) { + // If we reference an exported entity within the same module declaration, then whether + // we prefix depends on the kind of entity. SymbolFlags.ExportHasLocal encompasses all the + // kinds that we do NOT prefix. + var exportSymbol = getMergedSymbol(symbol.exportSymbol); + if (!prefixLocals && exportSymbol.flags & 944 /* ExportHasLocal */ && !(exportSymbol.flags & 3 /* Variable */)) { + return undefined; + } + symbol = exportSymbol; + } + var parentSymbol_1 = getParentOfSymbol(symbol); + if (parentSymbol_1) { + if (parentSymbol_1.flags & 512 /* ValueModule */ && parentSymbol_1.valueDeclaration.kind === 290 /* SourceFile */) { + var symbolFile = parentSymbol_1.valueDeclaration; + var referenceFile = ts.getSourceFileOfNode(node); + // If `node` accesses an export and that export isn't in the same file, then symbol is a namespace export, so return undefined. + var symbolIsUmdExport = symbolFile !== referenceFile; + return symbolIsUmdExport ? undefined : symbolFile; + } + return ts.findAncestor(node.parent, function (n) { return ts.isModuleOrEnumDeclaration(n) && getSymbolOfNode(n) === parentSymbol_1; }); + } + } + } + } + // When resolved as an expression identifier, if the given node references an import, return the declaration of + // that import. Otherwise, return undefined. + function getReferencedImportDeclaration(nodeIn) { + var node = ts.getParseTreeNode(nodeIn, ts.isIdentifier); + if (node) { + var symbol = getReferencedValueSymbol(node); + // We should only get the declaration of an alias if there isn't a local value + // declaration for the symbol + if (isNonLocalAlias(symbol, /*excludes*/ 111551 /* Value */) && !getTypeOnlyAliasDeclaration(symbol)) { + return getDeclarationOfAliasSymbol(symbol); + } + } + return undefined; + } + function isSymbolOfDestructuredElementOfCatchBinding(symbol) { + return ts.isBindingElement(symbol.valueDeclaration) + && ts.walkUpBindingElementsAndPatterns(symbol.valueDeclaration).parent.kind === 280 /* CatchClause */; + } + function isSymbolOfDeclarationWithCollidingName(symbol) { + if (symbol.flags & 418 /* BlockScoped */ && !ts.isSourceFile(symbol.valueDeclaration)) { + var links = getSymbolLinks(symbol); + if (links.isDeclarationWithCollidingName === undefined) { + var container = ts.getEnclosingBlockScopeContainer(symbol.valueDeclaration); + if (ts.isStatementWithLocals(container) || isSymbolOfDestructuredElementOfCatchBinding(symbol)) { + var nodeLinks_1 = getNodeLinks(symbol.valueDeclaration); + if (resolveName(container.parent, symbol.escapedName, 111551 /* Value */, /*nameNotFoundMessage*/ undefined, /*nameArg*/ undefined, /*isUse*/ false)) { + // redeclaration - always should be renamed + links.isDeclarationWithCollidingName = true; + } + else if (nodeLinks_1.flags & 262144 /* CapturedBlockScopedBinding */) { + // binding is captured in the function + // should be renamed if: + // - binding is not top level - top level bindings never collide with anything + // AND + // - binding is not declared in loop, should be renamed to avoid name reuse across siblings + // let a, b + // { let x = 1; a = () => x; } + // { let x = 100; b = () => x; } + // console.log(a()); // should print '1' + // console.log(b()); // should print '100' + // OR + // - binding is declared inside loop but not in inside initializer of iteration statement or directly inside loop body + // * variables from initializer are passed to rewritten loop body as parameters so they are not captured directly + // * variables that are declared immediately in loop body will become top level variable after loop is rewritten and thus + // they will not collide with anything + var isDeclaredInLoop = nodeLinks_1.flags & 524288 /* BlockScopedBindingInLoop */; + var inLoopInitializer = ts.isIterationStatement(container, /*lookInLabeledStatements*/ false); + var inLoopBodyBlock = container.kind === 223 /* Block */ && ts.isIterationStatement(container.parent, /*lookInLabeledStatements*/ false); + links.isDeclarationWithCollidingName = !ts.isBlockScopedContainerTopLevel(container) && (!isDeclaredInLoop || (!inLoopInitializer && !inLoopBodyBlock)); + } + else { + links.isDeclarationWithCollidingName = false; + } + } + } + return links.isDeclarationWithCollidingName; + } + return false; + } + // When resolved as an expression identifier, if the given node references a nested block scoped entity with + // a name that either hides an existing name or might hide it when compiled downlevel, + // return the declaration of that entity. Otherwise, return undefined. + function getReferencedDeclarationWithCollidingName(nodeIn) { + if (!ts.isGeneratedIdentifier(nodeIn)) { + var node = ts.getParseTreeNode(nodeIn, ts.isIdentifier); + if (node) { + var symbol = getReferencedValueSymbol(node); + if (symbol && isSymbolOfDeclarationWithCollidingName(symbol)) { + return symbol.valueDeclaration; + } + } + } + return undefined; + } + // Return true if the given node is a declaration of a nested block scoped entity with a name that either hides an + // existing name or might hide a name when compiled downlevel + function isDeclarationWithCollidingName(nodeIn) { + var node = ts.getParseTreeNode(nodeIn, ts.isDeclaration); + if (node) { + var symbol = getSymbolOfNode(node); + if (symbol) { + return isSymbolOfDeclarationWithCollidingName(symbol); + } + } + return false; + } + function isValueAliasDeclaration(node) { + switch (node.kind) { + case 253 /* ImportEqualsDeclaration */: + return isAliasResolvedToValue(getSymbolOfNode(node) || unknownSymbol); + case 255 /* ImportClause */: + case 256 /* NamespaceImport */: + case 258 /* ImportSpecifier */: + case 263 /* ExportSpecifier */: + var symbol = getSymbolOfNode(node) || unknownSymbol; + return isAliasResolvedToValue(symbol) && !getTypeOnlyAliasDeclaration(symbol); + case 260 /* ExportDeclaration */: + var exportClause = node.exportClause; + return !!exportClause && (ts.isNamespaceExport(exportClause) || + ts.some(exportClause.elements, isValueAliasDeclaration)); + case 259 /* ExportAssignment */: + return node.expression && node.expression.kind === 75 /* Identifier */ ? + isAliasResolvedToValue(getSymbolOfNode(node) || unknownSymbol) : + true; + } + return false; + } + function isTopLevelValueImportEqualsWithEntityName(nodeIn) { + var node = ts.getParseTreeNode(nodeIn, ts.isImportEqualsDeclaration); + if (node === undefined || node.parent.kind !== 290 /* SourceFile */ || !ts.isInternalModuleImportEqualsDeclaration(node)) { + // parent is not source file or it is not reference to internal module + return false; + } + var isValue = isAliasResolvedToValue(getSymbolOfNode(node)); + return isValue && node.moduleReference && !ts.nodeIsMissing(node.moduleReference); + } + function isAliasResolvedToValue(symbol) { + var target = resolveAlias(symbol); + if (target === unknownSymbol) { + return true; + } + // const enums and modules that contain only const enums are not considered values from the emit perspective + // unless 'preserveConstEnums' option is set to true + return !!(target.flags & 111551 /* Value */) && + (compilerOptions.preserveConstEnums || !isConstEnumOrConstEnumOnlyModule(target)); + } + function isConstEnumOrConstEnumOnlyModule(s) { + return isConstEnumSymbol(s) || !!s.constEnumOnlyModule; + } + function isReferencedAliasDeclaration(node, checkChildren) { + if (isAliasSymbolDeclaration(node)) { + var symbol = getSymbolOfNode(node); + if (symbol && getSymbolLinks(symbol).referenced) { + return true; + } + var target = getSymbolLinks(symbol).target; // TODO: GH#18217 + if (target && ts.getModifierFlags(node) & 1 /* Export */ && + target.flags & 111551 /* Value */ && + (compilerOptions.preserveConstEnums || !isConstEnumOrConstEnumOnlyModule(target))) { + // An `export import ... =` of a value symbol is always considered referenced + return true; + } + } + if (checkChildren) { + return !!ts.forEachChild(node, function (node) { return isReferencedAliasDeclaration(node, checkChildren); }); + } + return false; + } + function isImplementationOfOverload(node) { + if (ts.nodeIsPresent(node.body)) { + if (ts.isGetAccessor(node) || ts.isSetAccessor(node)) + return false; // Get or set accessors can never be overload implementations, but can have up to 2 signatures + var symbol = getSymbolOfNode(node); + var signaturesOfSymbol = getSignaturesOfSymbol(symbol); + // If this function body corresponds to function with multiple signature, it is implementation of overload + // e.g.: function foo(a: string): string; + // function foo(a: number): number; + // function foo(a: any) { // This is implementation of the overloads + // return a; + // } + return signaturesOfSymbol.length > 1 || + // If there is single signature for the symbol, it is overload if that signature isn't coming from the node + // e.g.: function foo(a: string): string; + // function foo(a: any) { // This is implementation of the overloads + // return a; + // } + (signaturesOfSymbol.length === 1 && signaturesOfSymbol[0].declaration !== node); + } + return false; + } + function isRequiredInitializedParameter(parameter) { + return !!strictNullChecks && + !isOptionalParameter(parameter) && + !ts.isJSDocParameterTag(parameter) && + !!parameter.initializer && + !ts.hasModifier(parameter, 92 /* ParameterPropertyModifier */); + } + function isOptionalUninitializedParameterProperty(parameter) { + return strictNullChecks && + isOptionalParameter(parameter) && + !parameter.initializer && + ts.hasModifier(parameter, 92 /* ParameterPropertyModifier */); + } + function isExpandoFunctionDeclaration(node) { + var declaration = ts.getParseTreeNode(node, ts.isFunctionDeclaration); + if (!declaration) { + return false; + } + var symbol = getSymbolOfNode(declaration); + if (!symbol || !(symbol.flags & 16 /* Function */)) { + return false; + } + return !!ts.forEachEntry(getExportsOfSymbol(symbol), function (p) { return p.flags & 111551 /* Value */ && p.valueDeclaration && ts.isPropertyAccessExpression(p.valueDeclaration); }); + } + function getPropertiesOfContainerFunction(node) { + var declaration = ts.getParseTreeNode(node, ts.isFunctionDeclaration); + if (!declaration) { + return ts.emptyArray; + } + var symbol = getSymbolOfNode(declaration); + return symbol && getPropertiesOfType(getTypeOfSymbol(symbol)) || ts.emptyArray; + } + function getNodeCheckFlags(node) { + return getNodeLinks(node).flags || 0; + } + function getEnumMemberValue(node) { + computeEnumMemberValues(node.parent); + return getNodeLinks(node).enumMemberValue; + } + function canHaveConstantValue(node) { + switch (node.kind) { + case 284 /* EnumMember */: + case 194 /* PropertyAccessExpression */: + case 195 /* ElementAccessExpression */: + return true; + } + return false; + } + function getConstantValue(node) { + if (node.kind === 284 /* EnumMember */) { + return getEnumMemberValue(node); + } + var symbol = getNodeLinks(node).resolvedSymbol; + if (symbol && (symbol.flags & 8 /* EnumMember */)) { + // inline property\index accesses only for const enums + var member = symbol.valueDeclaration; + if (ts.isEnumConst(member.parent)) { + return getEnumMemberValue(member); + } + } + return undefined; + } + function isFunctionType(type) { + return !!(type.flags & 524288 /* Object */) && getSignaturesOfType(type, 0 /* Call */).length > 0; + } + function getTypeReferenceSerializationKind(typeNameIn, location) { + // ensure both `typeName` and `location` are parse tree nodes. + var typeName = ts.getParseTreeNode(typeNameIn, ts.isEntityName); + if (!typeName) + return ts.TypeReferenceSerializationKind.Unknown; + if (location) { + location = ts.getParseTreeNode(location); + if (!location) + return ts.TypeReferenceSerializationKind.Unknown; + } + // Resolve the symbol as a value to ensure the type can be reached at runtime during emit. + var valueSymbol = resolveEntityName(typeName, 111551 /* Value */, /*ignoreErrors*/ true, /*dontResolveAlias*/ false, location); + // Resolve the symbol as a type so that we can provide a more useful hint for the type serializer. + var typeSymbol = resolveEntityName(typeName, 788968 /* Type */, /*ignoreErrors*/ true, /*dontResolveAlias*/ false, location); + if (valueSymbol && valueSymbol === typeSymbol) { + var globalPromiseSymbol = getGlobalPromiseConstructorSymbol(/*reportErrors*/ false); + if (globalPromiseSymbol && valueSymbol === globalPromiseSymbol) { + return ts.TypeReferenceSerializationKind.Promise; + } + var constructorType = getTypeOfSymbol(valueSymbol); + if (constructorType && isConstructorType(constructorType)) { + return ts.TypeReferenceSerializationKind.TypeWithConstructSignatureAndValue; + } + } + // We might not be able to resolve type symbol so use unknown type in that case (eg error case) + if (!typeSymbol) { + return ts.TypeReferenceSerializationKind.Unknown; + } + var type = getDeclaredTypeOfSymbol(typeSymbol); + if (type === errorType) { + return ts.TypeReferenceSerializationKind.Unknown; + } + else if (type.flags & 3 /* AnyOrUnknown */) { + return ts.TypeReferenceSerializationKind.ObjectType; + } + else if (isTypeAssignableToKind(type, 16384 /* Void */ | 98304 /* Nullable */ | 131072 /* Never */)) { + return ts.TypeReferenceSerializationKind.VoidNullableOrNeverType; + } + else if (isTypeAssignableToKind(type, 528 /* BooleanLike */)) { + return ts.TypeReferenceSerializationKind.BooleanType; + } + else if (isTypeAssignableToKind(type, 296 /* NumberLike */)) { + return ts.TypeReferenceSerializationKind.NumberLikeType; + } + else if (isTypeAssignableToKind(type, 2112 /* BigIntLike */)) { + return ts.TypeReferenceSerializationKind.BigIntLikeType; + } + else if (isTypeAssignableToKind(type, 132 /* StringLike */)) { + return ts.TypeReferenceSerializationKind.StringLikeType; + } + else if (isTupleType(type)) { + return ts.TypeReferenceSerializationKind.ArrayLikeType; + } + else if (isTypeAssignableToKind(type, 12288 /* ESSymbolLike */)) { + return ts.TypeReferenceSerializationKind.ESSymbolType; + } + else if (isFunctionType(type)) { + return ts.TypeReferenceSerializationKind.TypeWithCallSignature; + } + else if (isArrayType(type)) { + return ts.TypeReferenceSerializationKind.ArrayLikeType; + } + else { + return ts.TypeReferenceSerializationKind.ObjectType; + } + } + function createTypeOfDeclaration(declarationIn, enclosingDeclaration, flags, tracker, addUndefined) { + var declaration = ts.getParseTreeNode(declarationIn, ts.isVariableLikeOrAccessor); + if (!declaration) { + return ts.createToken(125 /* AnyKeyword */); + } + // Get type of the symbol if this is the valid symbol otherwise get type at location + var symbol = getSymbolOfNode(declaration); + var type = symbol && !(symbol.flags & (2048 /* TypeLiteral */ | 131072 /* Signature */)) + ? getWidenedLiteralType(getTypeOfSymbol(symbol)) + : errorType; + if (type.flags & 8192 /* UniqueESSymbol */ && + type.symbol === symbol) { + flags |= 1048576 /* AllowUniqueESSymbolType */; + } + if (addUndefined) { + type = getOptionalType(type); + } + return nodeBuilder.typeToTypeNode(type, enclosingDeclaration, flags | 1024 /* MultilineObjectLiterals */, tracker); + } + function createReturnTypeOfSignatureDeclaration(signatureDeclarationIn, enclosingDeclaration, flags, tracker) { + var signatureDeclaration = ts.getParseTreeNode(signatureDeclarationIn, ts.isFunctionLike); + if (!signatureDeclaration) { + return ts.createToken(125 /* AnyKeyword */); + } + var signature = getSignatureFromDeclaration(signatureDeclaration); + return nodeBuilder.typeToTypeNode(getReturnTypeOfSignature(signature), enclosingDeclaration, flags | 1024 /* MultilineObjectLiterals */, tracker); + } + function createTypeOfExpression(exprIn, enclosingDeclaration, flags, tracker) { + var expr = ts.getParseTreeNode(exprIn, ts.isExpression); + if (!expr) { + return ts.createToken(125 /* AnyKeyword */); + } + var type = getWidenedType(getRegularTypeOfExpression(expr)); + return nodeBuilder.typeToTypeNode(type, enclosingDeclaration, flags | 1024 /* MultilineObjectLiterals */, tracker); + } + function hasGlobalName(name) { + return globals.has(ts.escapeLeadingUnderscores(name)); + } + function getReferencedValueSymbol(reference, startInDeclarationContainer) { + var resolvedSymbol = getNodeLinks(reference).resolvedSymbol; + if (resolvedSymbol) { + return resolvedSymbol; + } + var location = reference; + if (startInDeclarationContainer) { + // When resolving the name of a declaration as a value, we need to start resolution + // at a point outside of the declaration. + var parent = reference.parent; + if (ts.isDeclaration(parent) && reference === parent.name) { + location = getDeclarationContainer(parent); + } + } + return resolveName(location, reference.escapedText, 111551 /* Value */ | 1048576 /* ExportValue */ | 2097152 /* Alias */, /*nodeNotFoundMessage*/ undefined, /*nameArg*/ undefined, /*isUse*/ true); + } + function getReferencedValueDeclaration(referenceIn) { + if (!ts.isGeneratedIdentifier(referenceIn)) { + var reference = ts.getParseTreeNode(referenceIn, ts.isIdentifier); + if (reference) { + var symbol = getReferencedValueSymbol(reference); + if (symbol) { + return getExportSymbolOfValueSymbolIfExported(symbol).valueDeclaration; + } + } + } + return undefined; + } + function isLiteralConstDeclaration(node) { + if (ts.isDeclarationReadonly(node) || ts.isVariableDeclaration(node) && ts.isVarConst(node)) { + return isFreshLiteralType(getTypeOfSymbol(getSymbolOfNode(node))); + } + return false; + } + function literalTypeToNode(type, enclosing, tracker) { + var enumResult = type.flags & 1024 /* EnumLiteral */ ? nodeBuilder.symbolToExpression(type.symbol, 111551 /* Value */, enclosing, /*flags*/ undefined, tracker) + : type === trueType ? ts.createTrue() : type === falseType && ts.createFalse(); + return enumResult || ts.createLiteral(type.value); + } + function createLiteralConstValue(node, tracker) { + var type = getTypeOfSymbol(getSymbolOfNode(node)); + return literalTypeToNode(type, node, tracker); + } + function getJsxFactoryEntity(location) { + return location ? (getJsxNamespace(location), (ts.getSourceFileOfNode(location).localJsxFactory || _jsxFactoryEntity)) : _jsxFactoryEntity; + } + function createResolver() { + // this variable and functions that use it are deliberately moved here from the outer scope + // to avoid scope pollution + var resolvedTypeReferenceDirectives = host.getResolvedTypeReferenceDirectives(); + var fileToDirective; + if (resolvedTypeReferenceDirectives) { + // populate reverse mapping: file path -> type reference directive that was resolved to this file + fileToDirective = ts.createMap(); + resolvedTypeReferenceDirectives.forEach(function (resolvedDirective, key) { + if (!resolvedDirective || !resolvedDirective.resolvedFileName) { + return; + } + var file = host.getSourceFile(resolvedDirective.resolvedFileName); + if (file) { + // Add the transitive closure of path references loaded by this file (as long as they are not) + // part of an existing type reference. + addReferencedFilesToTypeDirective(file, key); + } + }); + } + return { + getReferencedExportContainer: getReferencedExportContainer, + getReferencedImportDeclaration: getReferencedImportDeclaration, + getReferencedDeclarationWithCollidingName: getReferencedDeclarationWithCollidingName, + isDeclarationWithCollidingName: isDeclarationWithCollidingName, + isValueAliasDeclaration: function (node) { + node = ts.getParseTreeNode(node); + // Synthesized nodes are always treated like values. + return node ? isValueAliasDeclaration(node) : true; + }, + hasGlobalName: hasGlobalName, + isReferencedAliasDeclaration: function (node, checkChildren) { + node = ts.getParseTreeNode(node); + // Synthesized nodes are always treated as referenced. + return node ? isReferencedAliasDeclaration(node, checkChildren) : true; + }, + getNodeCheckFlags: function (node) { + node = ts.getParseTreeNode(node); + return node ? getNodeCheckFlags(node) : 0; + }, + isTopLevelValueImportEqualsWithEntityName: isTopLevelValueImportEqualsWithEntityName, + isDeclarationVisible: isDeclarationVisible, + isImplementationOfOverload: isImplementationOfOverload, + isRequiredInitializedParameter: isRequiredInitializedParameter, + isOptionalUninitializedParameterProperty: isOptionalUninitializedParameterProperty, + isExpandoFunctionDeclaration: isExpandoFunctionDeclaration, + getPropertiesOfContainerFunction: getPropertiesOfContainerFunction, + createTypeOfDeclaration: createTypeOfDeclaration, + createReturnTypeOfSignatureDeclaration: createReturnTypeOfSignatureDeclaration, + createTypeOfExpression: createTypeOfExpression, + createLiteralConstValue: createLiteralConstValue, + isSymbolAccessible: isSymbolAccessible, + isEntityNameVisible: isEntityNameVisible, + getConstantValue: function (nodeIn) { + var node = ts.getParseTreeNode(nodeIn, canHaveConstantValue); + return node ? getConstantValue(node) : undefined; + }, + collectLinkedAliases: collectLinkedAliases, + getReferencedValueDeclaration: getReferencedValueDeclaration, + getTypeReferenceSerializationKind: getTypeReferenceSerializationKind, + isOptionalParameter: isOptionalParameter, + moduleExportsSomeValue: moduleExportsSomeValue, + isArgumentsLocalBinding: isArgumentsLocalBinding, + getExternalModuleFileFromDeclaration: getExternalModuleFileFromDeclaration, + getTypeReferenceDirectivesForEntityName: getTypeReferenceDirectivesForEntityName, + getTypeReferenceDirectivesForSymbol: getTypeReferenceDirectivesForSymbol, + isLiteralConstDeclaration: isLiteralConstDeclaration, + isLateBound: function (nodeIn) { + var node = ts.getParseTreeNode(nodeIn, ts.isDeclaration); + var symbol = node && getSymbolOfNode(node); + return !!(symbol && ts.getCheckFlags(symbol) & 4096 /* Late */); + }, + getJsxFactoryEntity: getJsxFactoryEntity, + getAllAccessorDeclarations: function (accessor) { + accessor = ts.getParseTreeNode(accessor, ts.isGetOrSetAccessorDeclaration); // TODO: GH#18217 + var otherKind = accessor.kind === 164 /* SetAccessor */ ? 163 /* GetAccessor */ : 164 /* SetAccessor */; + var otherAccessor = ts.getDeclarationOfKind(getSymbolOfNode(accessor), otherKind); + var firstAccessor = otherAccessor && (otherAccessor.pos < accessor.pos) ? otherAccessor : accessor; + var secondAccessor = otherAccessor && (otherAccessor.pos < accessor.pos) ? accessor : otherAccessor; + var setAccessor = accessor.kind === 164 /* SetAccessor */ ? accessor : otherAccessor; + var getAccessor = accessor.kind === 163 /* GetAccessor */ ? accessor : otherAccessor; + return { + firstAccessor: firstAccessor, + secondAccessor: secondAccessor, + setAccessor: setAccessor, + getAccessor: getAccessor + }; + }, + getSymbolOfExternalModuleSpecifier: function (moduleName) { return resolveExternalModuleNameWorker(moduleName, moduleName, /*moduleNotFoundError*/ undefined); }, + isBindingCapturedByNode: function (node, decl) { + var parseNode = ts.getParseTreeNode(node); + var parseDecl = ts.getParseTreeNode(decl); + return !!parseNode && !!parseDecl && (ts.isVariableDeclaration(parseDecl) || ts.isBindingElement(parseDecl)) && isBindingCapturedByNode(parseNode, parseDecl); + }, + getDeclarationStatementsForSourceFile: function (node, flags, tracker, bundled) { + var n = ts.getParseTreeNode(node); + ts.Debug.assert(n && n.kind === 290 /* SourceFile */, "Non-sourcefile node passed into getDeclarationsForSourceFile"); + var sym = getSymbolOfNode(node); + if (!sym) { + return !node.locals ? [] : nodeBuilder.symbolTableToDeclarationStatements(node.locals, node, flags, tracker, bundled); + } + return !sym.exports ? [] : nodeBuilder.symbolTableToDeclarationStatements(sym.exports, node, flags, tracker, bundled); + }, + isImportRequiredByAugmentation: isImportRequiredByAugmentation, + }; + function isImportRequiredByAugmentation(node) { + var file = ts.getSourceFileOfNode(node); + if (!file.symbol) + return false; + var importTarget = getExternalModuleFileFromDeclaration(node); + if (!importTarget) + return false; + if (importTarget === file) + return false; + var exports = getExportsOfModule(file.symbol); + for (var _i = 0, _a = ts.arrayFrom(exports.values()); _i < _a.length; _i++) { + var s = _a[_i]; + if (s.mergeId) { + var merged = getMergedSymbol(s); + for (var _b = 0, _c = merged.declarations; _b < _c.length; _b++) { + var d = _c[_b]; + var declFile = ts.getSourceFileOfNode(d); + if (declFile === importTarget) { + return true; + } + } + } + } + return false; + } + function isInHeritageClause(node) { + return node.parent && node.parent.kind === 216 /* ExpressionWithTypeArguments */ && node.parent.parent && node.parent.parent.kind === 279 /* HeritageClause */; + } + // defined here to avoid outer scope pollution + function getTypeReferenceDirectivesForEntityName(node) { + // program does not have any files with type reference directives - bail out + if (!fileToDirective) { + return undefined; + } + // property access can only be used as values, or types when within an expression with type arguments inside a heritage clause + // qualified names can only be used as types\namespaces + // identifiers are treated as values only if they appear in type queries + var meaning = 788968 /* Type */ | 1920 /* Namespace */; + if ((node.kind === 75 /* Identifier */ && isInTypeQuery(node)) || (node.kind === 194 /* PropertyAccessExpression */ && !isInHeritageClause(node))) { + meaning = 111551 /* Value */ | 1048576 /* ExportValue */; + } + var symbol = resolveEntityName(node, meaning, /*ignoreErrors*/ true); + return symbol && symbol !== unknownSymbol ? getTypeReferenceDirectivesForSymbol(symbol, meaning) : undefined; + } + // defined here to avoid outer scope pollution + function getTypeReferenceDirectivesForSymbol(symbol, meaning) { + // program does not have any files with type reference directives - bail out + if (!fileToDirective) { + return undefined; + } + if (!isSymbolFromTypeDeclarationFile(symbol)) { + return undefined; + } + // check what declarations in the symbol can contribute to the target meaning + var typeReferenceDirectives; + for (var _i = 0, _a = symbol.declarations; _i < _a.length; _i++) { + var decl = _a[_i]; + // check meaning of the local symbol to see if declaration needs to be analyzed further + if (decl.symbol && decl.symbol.flags & meaning) { + var file = ts.getSourceFileOfNode(decl); + var typeReferenceDirective = fileToDirective.get(file.path); + if (typeReferenceDirective) { + (typeReferenceDirectives || (typeReferenceDirectives = [])).push(typeReferenceDirective); + } + else { + // found at least one entry that does not originate from type reference directive + return undefined; + } + } + } + return typeReferenceDirectives; + } + function isSymbolFromTypeDeclarationFile(symbol) { + // bail out if symbol does not have associated declarations (i.e. this is transient symbol created for property in binding pattern) + if (!symbol.declarations) { + return false; + } + // walk the parent chain for symbols to make sure that top level parent symbol is in the global scope + // external modules cannot define or contribute to type declaration files + var current = symbol; + while (true) { + var parent = getParentOfSymbol(current); + if (parent) { + current = parent; + } + else { + break; + } + } + if (current.valueDeclaration && current.valueDeclaration.kind === 290 /* SourceFile */ && current.flags & 512 /* ValueModule */) { + return false; + } + // check that at least one declaration of top level symbol originates from type declaration file + for (var _i = 0, _a = symbol.declarations; _i < _a.length; _i++) { + var decl = _a[_i]; + var file = ts.getSourceFileOfNode(decl); + if (fileToDirective.has(file.path)) { + return true; + } + } + return false; + } + function addReferencedFilesToTypeDirective(file, key) { + if (fileToDirective.has(file.path)) + return; + fileToDirective.set(file.path, key); + for (var _i = 0, _a = file.referencedFiles; _i < _a.length; _i++) { + var fileName = _a[_i].fileName; + var resolvedFile = ts.resolveTripleslashReference(fileName, file.originalFileName); + var referencedFile = host.getSourceFile(resolvedFile); + if (referencedFile) { + addReferencedFilesToTypeDirective(referencedFile, key); + } + } + } + } + function getExternalModuleFileFromDeclaration(declaration) { + var specifier = declaration.kind === 249 /* ModuleDeclaration */ ? ts.tryCast(declaration.name, ts.isStringLiteral) : ts.getExternalModuleName(declaration); + var moduleSymbol = resolveExternalModuleNameWorker(specifier, specifier, /*moduleNotFoundError*/ undefined); // TODO: GH#18217 + if (!moduleSymbol) { + return undefined; + } + return ts.getDeclarationOfKind(moduleSymbol, 290 /* SourceFile */); + } + function initializeTypeChecker() { + // Bind all source files and propagate errors + for (var _i = 0, _a = host.getSourceFiles(); _i < _a.length; _i++) { + var file = _a[_i]; + ts.bindSourceFile(file, compilerOptions); + } + amalgamatedDuplicates = ts.createMap(); + // Initialize global symbol table + var augmentations; + for (var _b = 0, _c = host.getSourceFiles(); _b < _c.length; _b++) { + var file = _c[_b]; + if (file.redirectInfo) { + continue; + } + if (!ts.isExternalOrCommonJsModule(file)) { + // It is an error for a non-external-module (i.e. script) to declare its own `globalThis`. + // We can't use `builtinGlobals` for this due to synthetic expando-namespace generation in JS files. + var fileGlobalThisSymbol = file.locals.get("globalThis"); + if (fileGlobalThisSymbol) { + for (var _d = 0, _e = fileGlobalThisSymbol.declarations; _d < _e.length; _d++) { + var declaration = _e[_d]; + diagnostics.add(ts.createDiagnosticForNode(declaration, ts.Diagnostics.Declaration_name_conflicts_with_built_in_global_identifier_0, "globalThis")); + } + } + mergeSymbolTable(globals, file.locals); + } + if (file.jsGlobalAugmentations) { + mergeSymbolTable(globals, file.jsGlobalAugmentations); + } + if (file.patternAmbientModules && file.patternAmbientModules.length) { + patternAmbientModules = ts.concatenate(patternAmbientModules, file.patternAmbientModules); + } + if (file.moduleAugmentations.length) { + (augmentations || (augmentations = [])).push(file.moduleAugmentations); + } + if (file.symbol && file.symbol.globalExports) { + // Merge in UMD exports with first-in-wins semantics (see #9771) + var source = file.symbol.globalExports; + source.forEach(function (sourceSymbol, id) { + if (!globals.has(id)) { + globals.set(id, sourceSymbol); + } + }); + } + } + // We do global augmentations separately from module augmentations (and before creating global types) because they + // 1. Affect global types. We won't have the correct global types until global augmentations are merged. Also, + // 2. Module augmentation instantiation requires creating the type of a module, which, in turn, can require + // checking for an export or property on the module (if export=) which, in turn, can fall back to the + // apparent type of the module - either globalObjectType or globalFunctionType - which wouldn't exist if we + // did module augmentations prior to finalizing the global types. + if (augmentations) { + // merge _global_ module augmentations. + // this needs to be done after global symbol table is initialized to make sure that all ambient modules are indexed + for (var _f = 0, augmentations_1 = augmentations; _f < augmentations_1.length; _f++) { + var list = augmentations_1[_f]; + for (var _g = 0, list_1 = list; _g < list_1.length; _g++) { + var augmentation = list_1[_g]; + if (!ts.isGlobalScopeAugmentation(augmentation.parent)) + continue; + mergeModuleAugmentation(augmentation); + } + } + } + // Setup global builtins + addToSymbolTable(globals, builtinGlobals, ts.Diagnostics.Declaration_name_conflicts_with_built_in_global_identifier_0); + getSymbolLinks(undefinedSymbol).type = undefinedWideningType; + getSymbolLinks(argumentsSymbol).type = getGlobalType("IArguments", /*arity*/ 0, /*reportErrors*/ true); + getSymbolLinks(unknownSymbol).type = errorType; + getSymbolLinks(globalThisSymbol).type = createObjectType(16 /* Anonymous */, globalThisSymbol); + // Initialize special types + globalArrayType = getGlobalType("Array", /*arity*/ 1, /*reportErrors*/ true); + globalObjectType = getGlobalType("Object", /*arity*/ 0, /*reportErrors*/ true); + globalFunctionType = getGlobalType("Function", /*arity*/ 0, /*reportErrors*/ true); + globalCallableFunctionType = strictBindCallApply && getGlobalType("CallableFunction", /*arity*/ 0, /*reportErrors*/ true) || globalFunctionType; + globalNewableFunctionType = strictBindCallApply && getGlobalType("NewableFunction", /*arity*/ 0, /*reportErrors*/ true) || globalFunctionType; + globalStringType = getGlobalType("String", /*arity*/ 0, /*reportErrors*/ true); + globalNumberType = getGlobalType("Number", /*arity*/ 0, /*reportErrors*/ true); + globalBooleanType = getGlobalType("Boolean", /*arity*/ 0, /*reportErrors*/ true); + globalRegExpType = getGlobalType("RegExp", /*arity*/ 0, /*reportErrors*/ true); + anyArrayType = createArrayType(anyType); + autoArrayType = createArrayType(autoType); + if (autoArrayType === emptyObjectType) { + // autoArrayType is used as a marker, so even if global Array type is not defined, it needs to be a unique type + autoArrayType = createAnonymousType(undefined, emptySymbols, ts.emptyArray, ts.emptyArray, undefined, undefined); + } + globalReadonlyArrayType = getGlobalTypeOrUndefined("ReadonlyArray", /*arity*/ 1) || globalArrayType; + anyReadonlyArrayType = globalReadonlyArrayType ? createTypeFromGenericGlobalType(globalReadonlyArrayType, [anyType]) : anyArrayType; + globalThisType = getGlobalTypeOrUndefined("ThisType", /*arity*/ 1); + if (augmentations) { + // merge _nonglobal_ module augmentations. + // this needs to be done after global symbol table is initialized to make sure that all ambient modules are indexed + for (var _h = 0, augmentations_2 = augmentations; _h < augmentations_2.length; _h++) { + var list = augmentations_2[_h]; + for (var _j = 0, list_2 = list; _j < list_2.length; _j++) { + var augmentation = list_2[_j]; + if (ts.isGlobalScopeAugmentation(augmentation.parent)) + continue; + mergeModuleAugmentation(augmentation); + } + } + } + amalgamatedDuplicates.forEach(function (_a) { + var firstFile = _a.firstFile, secondFile = _a.secondFile, conflictingSymbols = _a.conflictingSymbols; + // If not many things conflict, issue individual errors + if (conflictingSymbols.size < 8) { + conflictingSymbols.forEach(function (_a, symbolName) { + var isBlockScoped = _a.isBlockScoped, firstFileLocations = _a.firstFileLocations, secondFileLocations = _a.secondFileLocations; + var message = isBlockScoped ? ts.Diagnostics.Cannot_redeclare_block_scoped_variable_0 : ts.Diagnostics.Duplicate_identifier_0; + for (var _i = 0, firstFileLocations_1 = firstFileLocations; _i < firstFileLocations_1.length; _i++) { + var node = firstFileLocations_1[_i]; + addDuplicateDeclarationError(node, message, symbolName, secondFileLocations); + } + for (var _b = 0, secondFileLocations_1 = secondFileLocations; _b < secondFileLocations_1.length; _b++) { + var node = secondFileLocations_1[_b]; + addDuplicateDeclarationError(node, message, symbolName, firstFileLocations); + } + }); + } + else { + // Otherwise issue top-level error since the files appear very identical in terms of what they contain + var list = ts.arrayFrom(conflictingSymbols.keys()).join(", "); + diagnostics.add(ts.addRelatedInfo(ts.createDiagnosticForNode(firstFile, ts.Diagnostics.Definitions_of_the_following_identifiers_conflict_with_those_in_another_file_Colon_0, list), ts.createDiagnosticForNode(secondFile, ts.Diagnostics.Conflicts_are_in_this_file))); + diagnostics.add(ts.addRelatedInfo(ts.createDiagnosticForNode(secondFile, ts.Diagnostics.Definitions_of_the_following_identifiers_conflict_with_those_in_another_file_Colon_0, list), ts.createDiagnosticForNode(firstFile, ts.Diagnostics.Conflicts_are_in_this_file))); + } + }); + amalgamatedDuplicates = undefined; + } + function checkExternalEmitHelpers(location, helpers) { + if ((requestedExternalEmitHelpers & helpers) !== helpers && compilerOptions.importHelpers) { + var sourceFile = ts.getSourceFileOfNode(location); + if (ts.isEffectiveExternalModule(sourceFile, compilerOptions) && !(location.flags & 8388608 /* Ambient */)) { + var helpersModule = resolveHelpersModule(sourceFile, location); + if (helpersModule !== unknownSymbol) { + var uncheckedHelpers = helpers & ~requestedExternalEmitHelpers; + for (var helper = 1 /* FirstEmitHelper */; helper <= 1048576 /* LastEmitHelper */; helper <<= 1) { + if (uncheckedHelpers & helper) { + var name = getHelperName(helper); + var symbol = getSymbol(helpersModule.exports, ts.escapeLeadingUnderscores(name), 111551 /* Value */); + if (!symbol) { + error(location, ts.Diagnostics.This_syntax_requires_an_imported_helper_named_1_which_does_not_exist_in_0_Consider_upgrading_your_version_of_0, ts.externalHelpersModuleNameText, name); + } + } + } + } + requestedExternalEmitHelpers |= helpers; + } + } + } + function getHelperName(helper) { + switch (helper) { + case 1 /* Extends */: return "__extends"; + case 2 /* Assign */: return "__assign"; + case 4 /* Rest */: return "__rest"; + case 8 /* Decorate */: return "__decorate"; + case 16 /* Metadata */: return "__metadata"; + case 32 /* Param */: return "__param"; + case 64 /* Awaiter */: return "__awaiter"; + case 128 /* Generator */: return "__generator"; + case 256 /* Values */: return "__values"; + case 512 /* Read */: return "__read"; + case 1024 /* Spread */: return "__spread"; + case 2048 /* SpreadArrays */: return "__spreadArrays"; + case 4096 /* Await */: return "__await"; + case 8192 /* AsyncGenerator */: return "__asyncGenerator"; + case 16384 /* AsyncDelegator */: return "__asyncDelegator"; + case 32768 /* AsyncValues */: return "__asyncValues"; + case 65536 /* ExportStar */: return "__exportStar"; + case 131072 /* MakeTemplateObject */: return "__makeTemplateObject"; + case 262144 /* ClassPrivateFieldGet */: return "__classPrivateFieldGet"; + case 524288 /* ClassPrivateFieldSet */: return "__classPrivateFieldSet"; + case 1048576 /* CreateBinding */: return "__createBinding"; + default: return ts.Debug.fail("Unrecognized helper"); + } + } + function resolveHelpersModule(node, errorNode) { + if (!externalHelpersModule) { + externalHelpersModule = resolveExternalModule(node, ts.externalHelpersModuleNameText, ts.Diagnostics.This_syntax_requires_an_imported_helper_but_module_0_cannot_be_found, errorNode) || unknownSymbol; + } + return externalHelpersModule; + } + // GRAMMAR CHECKING + function checkGrammarDecoratorsAndModifiers(node) { + return checkGrammarDecorators(node) || checkGrammarModifiers(node); + } + function checkGrammarDecorators(node) { + if (!node.decorators) { + return false; + } + if (!ts.nodeCanBeDecorated(node, node.parent, node.parent.parent)) { + if (node.kind === 161 /* MethodDeclaration */ && !ts.nodeIsPresent(node.body)) { + return grammarErrorOnFirstToken(node, ts.Diagnostics.A_decorator_can_only_decorate_a_method_implementation_not_an_overload); + } + else { + return grammarErrorOnFirstToken(node, ts.Diagnostics.Decorators_are_not_valid_here); + } + } + else if (node.kind === 163 /* GetAccessor */ || node.kind === 164 /* SetAccessor */) { + var accessors = ts.getAllAccessorDeclarations(node.parent.members, node); + if (accessors.firstAccessor.decorators && node === accessors.secondAccessor) { + return grammarErrorOnFirstToken(node, ts.Diagnostics.Decorators_cannot_be_applied_to_multiple_get_Slashset_accessors_of_the_same_name); + } + } + return false; + } + function checkGrammarModifiers(node) { + var quickResult = reportObviousModifierErrors(node); + if (quickResult !== undefined) { + return quickResult; + } + var lastStatic, lastDeclare, lastAsync, lastReadonly; + var flags = 0 /* None */; + for (var _i = 0, _a = node.modifiers; _i < _a.length; _i++) { + var modifier = _a[_i]; + if (modifier.kind !== 138 /* ReadonlyKeyword */) { + if (node.kind === 158 /* PropertySignature */ || node.kind === 160 /* MethodSignature */) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_appear_on_a_type_member, ts.tokenToString(modifier.kind)); + } + if (node.kind === 167 /* IndexSignature */) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_appear_on_an_index_signature, ts.tokenToString(modifier.kind)); + } + } + switch (modifier.kind) { + case 81 /* ConstKeyword */: + if (node.kind !== 248 /* EnumDeclaration */) { + return grammarErrorOnNode(node, ts.Diagnostics.A_class_member_cannot_have_the_0_keyword, ts.tokenToString(81 /* ConstKeyword */)); + } + break; + case 119 /* PublicKeyword */: + case 118 /* ProtectedKeyword */: + case 117 /* PrivateKeyword */: + var text = visibilityToString(ts.modifierToFlag(modifier.kind)); + if (flags & 28 /* AccessibilityModifier */) { + return grammarErrorOnNode(modifier, ts.Diagnostics.Accessibility_modifier_already_seen); + } + else if (flags & 32 /* Static */) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_must_precede_1_modifier, text, "static"); + } + else if (flags & 64 /* Readonly */) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_must_precede_1_modifier, text, "readonly"); + } + else if (flags & 256 /* Async */) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_must_precede_1_modifier, text, "async"); + } + else if (node.parent.kind === 250 /* ModuleBlock */ || node.parent.kind === 290 /* SourceFile */) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_appear_on_a_module_or_namespace_element, text); + } + else if (flags & 128 /* Abstract */) { + if (modifier.kind === 117 /* PrivateKeyword */) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_be_used_with_1_modifier, text, "abstract"); + } + else { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_must_precede_1_modifier, text, "abstract"); + } + } + else if (ts.isPrivateIdentifierPropertyDeclaration(node)) { + return grammarErrorOnNode(modifier, ts.Diagnostics.An_accessibility_modifier_cannot_be_used_with_a_private_identifier); + } + flags |= ts.modifierToFlag(modifier.kind); + break; + case 120 /* StaticKeyword */: + if (flags & 32 /* Static */) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_already_seen, "static"); + } + else if (flags & 64 /* Readonly */) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_must_precede_1_modifier, "static", "readonly"); + } + else if (flags & 256 /* Async */) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_must_precede_1_modifier, "static", "async"); + } + else if (node.parent.kind === 250 /* ModuleBlock */ || node.parent.kind === 290 /* SourceFile */) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_appear_on_a_module_or_namespace_element, "static"); + } + else if (node.kind === 156 /* Parameter */) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_appear_on_a_parameter, "static"); + } + else if (flags & 128 /* Abstract */) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_be_used_with_1_modifier, "static", "abstract"); + } + else if (ts.isPrivateIdentifierPropertyDeclaration(node)) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_be_used_with_a_private_identifier, "static"); + } + flags |= 32 /* Static */; + lastStatic = modifier; + break; + case 138 /* ReadonlyKeyword */: + if (flags & 64 /* Readonly */) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_already_seen, "readonly"); + } + else if (node.kind !== 159 /* PropertyDeclaration */ && node.kind !== 158 /* PropertySignature */ && node.kind !== 167 /* IndexSignature */ && node.kind !== 156 /* Parameter */) { + // If node.kind === SyntaxKind.Parameter, checkParameter report an error if it's not a parameter property. + return grammarErrorOnNode(modifier, ts.Diagnostics.readonly_modifier_can_only_appear_on_a_property_declaration_or_index_signature); + } + flags |= 64 /* Readonly */; + lastReadonly = modifier; + break; + case 89 /* ExportKeyword */: + if (flags & 1 /* Export */) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_already_seen, "export"); + } + else if (flags & 2 /* Ambient */) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_must_precede_1_modifier, "export", "declare"); + } + else if (flags & 128 /* Abstract */) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_must_precede_1_modifier, "export", "abstract"); + } + else if (flags & 256 /* Async */) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_must_precede_1_modifier, "export", "async"); + } + else if (ts.isClassLike(node.parent)) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_appear_on_a_class_element, "export"); + } + else if (node.kind === 156 /* Parameter */) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_appear_on_a_parameter, "export"); + } + flags |= 1 /* Export */; + break; + case 84 /* DefaultKeyword */: + var container = node.parent.kind === 290 /* SourceFile */ ? node.parent : node.parent.parent; + if (container.kind === 249 /* ModuleDeclaration */ && !ts.isAmbientModule(container)) { + return grammarErrorOnNode(modifier, ts.Diagnostics.A_default_export_can_only_be_used_in_an_ECMAScript_style_module); + } + flags |= 512 /* Default */; + break; + case 130 /* DeclareKeyword */: + if (flags & 2 /* Ambient */) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_already_seen, "declare"); + } + else if (flags & 256 /* Async */) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_be_used_in_an_ambient_context, "async"); + } + else if (ts.isClassLike(node.parent) && !ts.isPropertyDeclaration(node)) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_appear_on_a_class_element, "declare"); + } + else if (node.kind === 156 /* Parameter */) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_appear_on_a_parameter, "declare"); + } + else if ((node.parent.flags & 8388608 /* Ambient */) && node.parent.kind === 250 /* ModuleBlock */) { + return grammarErrorOnNode(modifier, ts.Diagnostics.A_declare_modifier_cannot_be_used_in_an_already_ambient_context); + } + else if (ts.isPrivateIdentifierPropertyDeclaration(node)) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_be_used_with_a_private_identifier, "declare"); + } + flags |= 2 /* Ambient */; + lastDeclare = modifier; + break; + case 122 /* AbstractKeyword */: + if (flags & 128 /* Abstract */) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_already_seen, "abstract"); + } + if (node.kind !== 245 /* ClassDeclaration */) { + if (node.kind !== 161 /* MethodDeclaration */ && + node.kind !== 159 /* PropertyDeclaration */ && + node.kind !== 163 /* GetAccessor */ && + node.kind !== 164 /* SetAccessor */) { + return grammarErrorOnNode(modifier, ts.Diagnostics.abstract_modifier_can_only_appear_on_a_class_method_or_property_declaration); + } + if (!(node.parent.kind === 245 /* ClassDeclaration */ && ts.hasModifier(node.parent, 128 /* Abstract */))) { + return grammarErrorOnNode(modifier, ts.Diagnostics.Abstract_methods_can_only_appear_within_an_abstract_class); + } + if (flags & 32 /* Static */) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_be_used_with_1_modifier, "static", "abstract"); + } + if (flags & 8 /* Private */) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_be_used_with_1_modifier, "private", "abstract"); + } + } + if (ts.isNamedDeclaration(node) && node.name.kind === 76 /* PrivateIdentifier */) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_be_used_with_a_private_identifier, "abstract"); + } + flags |= 128 /* Abstract */; + break; + case 126 /* AsyncKeyword */: + if (flags & 256 /* Async */) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_already_seen, "async"); + } + else if (flags & 2 /* Ambient */ || node.parent.flags & 8388608 /* Ambient */) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_be_used_in_an_ambient_context, "async"); + } + else if (node.kind === 156 /* Parameter */) { + return grammarErrorOnNode(modifier, ts.Diagnostics._0_modifier_cannot_appear_on_a_parameter, "async"); + } + flags |= 256 /* Async */; + lastAsync = modifier; + break; + } + } + if (node.kind === 162 /* Constructor */) { + if (flags & 32 /* Static */) { + return grammarErrorOnNode(lastStatic, ts.Diagnostics._0_modifier_cannot_appear_on_a_constructor_declaration, "static"); + } + if (flags & 128 /* Abstract */) { + return grammarErrorOnNode(lastStatic, ts.Diagnostics._0_modifier_cannot_appear_on_a_constructor_declaration, "abstract"); // TODO: GH#18217 + } + else if (flags & 256 /* Async */) { + return grammarErrorOnNode(lastAsync, ts.Diagnostics._0_modifier_cannot_appear_on_a_constructor_declaration, "async"); + } + else if (flags & 64 /* Readonly */) { + return grammarErrorOnNode(lastReadonly, ts.Diagnostics._0_modifier_cannot_appear_on_a_constructor_declaration, "readonly"); + } + return false; + } + else if ((node.kind === 254 /* ImportDeclaration */ || node.kind === 253 /* ImportEqualsDeclaration */) && flags & 2 /* Ambient */) { + return grammarErrorOnNode(lastDeclare, ts.Diagnostics.A_0_modifier_cannot_be_used_with_an_import_declaration, "declare"); + } + else if (node.kind === 156 /* Parameter */ && (flags & 92 /* ParameterPropertyModifier */) && ts.isBindingPattern(node.name)) { + return grammarErrorOnNode(node, ts.Diagnostics.A_parameter_property_may_not_be_declared_using_a_binding_pattern); + } + else if (node.kind === 156 /* Parameter */ && (flags & 92 /* ParameterPropertyModifier */) && node.dotDotDotToken) { + return grammarErrorOnNode(node, ts.Diagnostics.A_parameter_property_cannot_be_declared_using_a_rest_parameter); + } + if (flags & 256 /* Async */) { + return checkGrammarAsyncModifier(node, lastAsync); + } + return false; + } + /** + * true | false: Early return this value from checkGrammarModifiers. + * undefined: Need to do full checking on the modifiers. + */ + function reportObviousModifierErrors(node) { + return !node.modifiers + ? false + : shouldReportBadModifier(node) + ? grammarErrorOnFirstToken(node, ts.Diagnostics.Modifiers_cannot_appear_here) + : undefined; + } + function shouldReportBadModifier(node) { + switch (node.kind) { + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + case 162 /* Constructor */: + case 159 /* PropertyDeclaration */: + case 158 /* PropertySignature */: + case 161 /* MethodDeclaration */: + case 160 /* MethodSignature */: + case 167 /* IndexSignature */: + case 249 /* ModuleDeclaration */: + case 254 /* ImportDeclaration */: + case 253 /* ImportEqualsDeclaration */: + case 260 /* ExportDeclaration */: + case 259 /* ExportAssignment */: + case 201 /* FunctionExpression */: + case 202 /* ArrowFunction */: + case 156 /* Parameter */: + return false; + default: + if (node.parent.kind === 250 /* ModuleBlock */ || node.parent.kind === 290 /* SourceFile */) { + return false; + } + switch (node.kind) { + case 244 /* FunctionDeclaration */: + return nodeHasAnyModifiersExcept(node, 126 /* AsyncKeyword */); + case 245 /* ClassDeclaration */: + return nodeHasAnyModifiersExcept(node, 122 /* AbstractKeyword */); + case 246 /* InterfaceDeclaration */: + case 225 /* VariableStatement */: + case 247 /* TypeAliasDeclaration */: + return true; + case 248 /* EnumDeclaration */: + return nodeHasAnyModifiersExcept(node, 81 /* ConstKeyword */); + default: + ts.Debug.fail(); + return false; + } + } + } + function nodeHasAnyModifiersExcept(node, allowedModifier) { + return node.modifiers.length > 1 || node.modifiers[0].kind !== allowedModifier; + } + function checkGrammarAsyncModifier(node, asyncModifier) { + switch (node.kind) { + case 161 /* MethodDeclaration */: + case 244 /* FunctionDeclaration */: + case 201 /* FunctionExpression */: + case 202 /* ArrowFunction */: + return false; + } + return grammarErrorOnNode(asyncModifier, ts.Diagnostics._0_modifier_cannot_be_used_here, "async"); + } + function checkGrammarForDisallowedTrailingComma(list, diag) { + if (diag === void 0) { diag = ts.Diagnostics.Trailing_comma_not_allowed; } + if (list && list.hasTrailingComma) { + return grammarErrorAtPos(list[0], list.end - ",".length, ",".length, diag); + } + return false; + } + function checkGrammarTypeParameterList(typeParameters, file) { + if (typeParameters && typeParameters.length === 0) { + var start = typeParameters.pos - "<".length; + var end = ts.skipTrivia(file.text, typeParameters.end) + ">".length; + return grammarErrorAtPos(file, start, end - start, ts.Diagnostics.Type_parameter_list_cannot_be_empty); + } + return false; + } + function checkGrammarParameterList(parameters) { + var seenOptionalParameter = false; + var parameterCount = parameters.length; + for (var i = 0; i < parameterCount; i++) { + var parameter = parameters[i]; + if (parameter.dotDotDotToken) { + if (i !== (parameterCount - 1)) { + return grammarErrorOnNode(parameter.dotDotDotToken, ts.Diagnostics.A_rest_parameter_must_be_last_in_a_parameter_list); + } + if (!(parameter.flags & 8388608 /* Ambient */)) { // Allow `...foo,` in ambient declarations; see GH#23070 + checkGrammarForDisallowedTrailingComma(parameters, ts.Diagnostics.A_rest_parameter_or_binding_pattern_may_not_have_a_trailing_comma); + } + if (parameter.questionToken) { + return grammarErrorOnNode(parameter.questionToken, ts.Diagnostics.A_rest_parameter_cannot_be_optional); + } + if (parameter.initializer) { + return grammarErrorOnNode(parameter.name, ts.Diagnostics.A_rest_parameter_cannot_have_an_initializer); + } + } + else if (parameter.questionToken) { + seenOptionalParameter = true; + if (parameter.initializer) { + return grammarErrorOnNode(parameter.name, ts.Diagnostics.Parameter_cannot_have_question_mark_and_initializer); + } + } + else if (seenOptionalParameter && !parameter.initializer) { + return grammarErrorOnNode(parameter.name, ts.Diagnostics.A_required_parameter_cannot_follow_an_optional_parameter); + } + } + } + function getNonSimpleParameters(parameters) { + return ts.filter(parameters, function (parameter) { return !!parameter.initializer || ts.isBindingPattern(parameter.name) || ts.isRestParameter(parameter); }); + } + function checkGrammarForUseStrictSimpleParameterList(node) { + if (languageVersion >= 3 /* ES2016 */) { + var useStrictDirective_1 = node.body && ts.isBlock(node.body) && ts.findUseStrictPrologue(node.body.statements); + if (useStrictDirective_1) { + var nonSimpleParameters = getNonSimpleParameters(node.parameters); + if (ts.length(nonSimpleParameters)) { + ts.forEach(nonSimpleParameters, function (parameter) { + ts.addRelatedInfo(error(parameter, ts.Diagnostics.This_parameter_is_not_allowed_with_use_strict_directive), ts.createDiagnosticForNode(useStrictDirective_1, ts.Diagnostics.use_strict_directive_used_here)); + }); + var diagnostics_1 = nonSimpleParameters.map(function (parameter, index) { return (index === 0 ? ts.createDiagnosticForNode(parameter, ts.Diagnostics.Non_simple_parameter_declared_here) : ts.createDiagnosticForNode(parameter, ts.Diagnostics.and_here)); }); + ts.addRelatedInfo.apply(void 0, __spreadArrays([error(useStrictDirective_1, ts.Diagnostics.use_strict_directive_cannot_be_used_with_non_simple_parameter_list)], diagnostics_1)); + return true; + } + } + } + return false; + } + function checkGrammarFunctionLikeDeclaration(node) { + // Prevent cascading error by short-circuit + var file = ts.getSourceFileOfNode(node); + return checkGrammarDecoratorsAndModifiers(node) || checkGrammarTypeParameterList(node.typeParameters, file) || + checkGrammarParameterList(node.parameters) || checkGrammarArrowFunction(node, file) || + (ts.isFunctionLikeDeclaration(node) && checkGrammarForUseStrictSimpleParameterList(node)); + } + function checkGrammarClassLikeDeclaration(node) { + var file = ts.getSourceFileOfNode(node); + return checkGrammarClassDeclarationHeritageClauses(node) || checkGrammarTypeParameterList(node.typeParameters, file); + } + function checkGrammarArrowFunction(node, file) { + if (!ts.isArrowFunction(node)) { + return false; + } + var equalsGreaterThanToken = node.equalsGreaterThanToken; + var startLine = ts.getLineAndCharacterOfPosition(file, equalsGreaterThanToken.pos).line; + var endLine = ts.getLineAndCharacterOfPosition(file, equalsGreaterThanToken.end).line; + return startLine !== endLine && grammarErrorOnNode(equalsGreaterThanToken, ts.Diagnostics.Line_terminator_not_permitted_before_arrow); + } + function checkGrammarIndexSignatureParameters(node) { + var parameter = node.parameters[0]; + if (node.parameters.length !== 1) { + if (parameter) { + return grammarErrorOnNode(parameter.name, ts.Diagnostics.An_index_signature_must_have_exactly_one_parameter); + } + else { + return grammarErrorOnNode(node, ts.Diagnostics.An_index_signature_must_have_exactly_one_parameter); + } + } + checkGrammarForDisallowedTrailingComma(node.parameters, ts.Diagnostics.An_index_signature_cannot_have_a_trailing_comma); + if (parameter.dotDotDotToken) { + return grammarErrorOnNode(parameter.dotDotDotToken, ts.Diagnostics.An_index_signature_cannot_have_a_rest_parameter); + } + if (ts.hasModifiers(parameter)) { + return grammarErrorOnNode(parameter.name, ts.Diagnostics.An_index_signature_parameter_cannot_have_an_accessibility_modifier); + } + if (parameter.questionToken) { + return grammarErrorOnNode(parameter.questionToken, ts.Diagnostics.An_index_signature_parameter_cannot_have_a_question_mark); + } + if (parameter.initializer) { + return grammarErrorOnNode(parameter.name, ts.Diagnostics.An_index_signature_parameter_cannot_have_an_initializer); + } + if (!parameter.type) { + return grammarErrorOnNode(parameter.name, ts.Diagnostics.An_index_signature_parameter_must_have_a_type_annotation); + } + if (parameter.type.kind !== 143 /* StringKeyword */ && parameter.type.kind !== 140 /* NumberKeyword */) { + var type = getTypeFromTypeNode(parameter.type); + if (type.flags & 4 /* String */ || type.flags & 8 /* Number */) { + return grammarErrorOnNode(parameter.name, ts.Diagnostics.An_index_signature_parameter_type_cannot_be_a_type_alias_Consider_writing_0_Colon_1_Colon_2_instead, ts.getTextOfNode(parameter.name), typeToString(type), typeToString(node.type ? getTypeFromTypeNode(node.type) : anyType)); + } + if (type.flags & 1048576 /* Union */ && allTypesAssignableToKind(type, 384 /* StringOrNumberLiteral */, /*strict*/ true)) { + return grammarErrorOnNode(parameter.name, ts.Diagnostics.An_index_signature_parameter_type_cannot_be_a_union_type_Consider_using_a_mapped_object_type_instead); + } + return grammarErrorOnNode(parameter.name, ts.Diagnostics.An_index_signature_parameter_type_must_be_either_string_or_number); + } + if (!node.type) { + return grammarErrorOnNode(node, ts.Diagnostics.An_index_signature_must_have_a_type_annotation); + } + return false; + } + function checkGrammarIndexSignature(node) { + // Prevent cascading error by short-circuit + return checkGrammarDecoratorsAndModifiers(node) || checkGrammarIndexSignatureParameters(node); + } + function checkGrammarForAtLeastOneTypeArgument(node, typeArguments) { + if (typeArguments && typeArguments.length === 0) { + var sourceFile = ts.getSourceFileOfNode(node); + var start = typeArguments.pos - "<".length; + var end = ts.skipTrivia(sourceFile.text, typeArguments.end) + ">".length; + return grammarErrorAtPos(sourceFile, start, end - start, ts.Diagnostics.Type_argument_list_cannot_be_empty); + } + return false; + } + function checkGrammarTypeArguments(node, typeArguments) { + return checkGrammarForDisallowedTrailingComma(typeArguments) || + checkGrammarForAtLeastOneTypeArgument(node, typeArguments); + } + function checkGrammarTaggedTemplateChain(node) { + if (node.questionDotToken || node.flags & 32 /* OptionalChain */) { + return grammarErrorOnNode(node.template, ts.Diagnostics.Tagged_template_expressions_are_not_permitted_in_an_optional_chain); + } + return false; + } + function checkGrammarForOmittedArgument(args) { + if (args) { + for (var _i = 0, args_4 = args; _i < args_4.length; _i++) { + var arg = args_4[_i]; + if (arg.kind === 215 /* OmittedExpression */) { + return grammarErrorAtPos(arg, arg.pos, 0, ts.Diagnostics.Argument_expression_expected); + } + } + } + return false; + } + function checkGrammarArguments(args) { + return checkGrammarForOmittedArgument(args); + } + function checkGrammarHeritageClause(node) { + var types = node.types; + if (checkGrammarForDisallowedTrailingComma(types)) { + return true; + } + if (types && types.length === 0) { + var listType = ts.tokenToString(node.token); + return grammarErrorAtPos(node, types.pos, 0, ts.Diagnostics._0_list_cannot_be_empty, listType); + } + return ts.some(types, checkGrammarExpressionWithTypeArguments); + } + function checkGrammarExpressionWithTypeArguments(node) { + return checkGrammarTypeArguments(node, node.typeArguments); + } + function checkGrammarClassDeclarationHeritageClauses(node) { + var seenExtendsClause = false; + var seenImplementsClause = false; + if (!checkGrammarDecoratorsAndModifiers(node) && node.heritageClauses) { + for (var _i = 0, _a = node.heritageClauses; _i < _a.length; _i++) { + var heritageClause = _a[_i]; + if (heritageClause.token === 90 /* ExtendsKeyword */) { + if (seenExtendsClause) { + return grammarErrorOnFirstToken(heritageClause, ts.Diagnostics.extends_clause_already_seen); + } + if (seenImplementsClause) { + return grammarErrorOnFirstToken(heritageClause, ts.Diagnostics.extends_clause_must_precede_implements_clause); + } + if (heritageClause.types.length > 1) { + return grammarErrorOnFirstToken(heritageClause.types[1], ts.Diagnostics.Classes_can_only_extend_a_single_class); + } + seenExtendsClause = true; + } + else { + ts.Debug.assert(heritageClause.token === 113 /* ImplementsKeyword */); + if (seenImplementsClause) { + return grammarErrorOnFirstToken(heritageClause, ts.Diagnostics.implements_clause_already_seen); + } + seenImplementsClause = true; + } + // Grammar checking heritageClause inside class declaration + checkGrammarHeritageClause(heritageClause); + } + } + } + function checkGrammarInterfaceDeclaration(node) { + var seenExtendsClause = false; + if (node.heritageClauses) { + for (var _i = 0, _a = node.heritageClauses; _i < _a.length; _i++) { + var heritageClause = _a[_i]; + if (heritageClause.token === 90 /* ExtendsKeyword */) { + if (seenExtendsClause) { + return grammarErrorOnFirstToken(heritageClause, ts.Diagnostics.extends_clause_already_seen); + } + seenExtendsClause = true; + } + else { + ts.Debug.assert(heritageClause.token === 113 /* ImplementsKeyword */); + return grammarErrorOnFirstToken(heritageClause, ts.Diagnostics.Interface_declaration_cannot_have_implements_clause); + } + // Grammar checking heritageClause inside class declaration + checkGrammarHeritageClause(heritageClause); + } + } + return false; + } + function checkGrammarComputedPropertyName(node) { + // If node is not a computedPropertyName, just skip the grammar checking + if (node.kind !== 154 /* ComputedPropertyName */) { + return false; + } + var computedPropertyName = node; + if (computedPropertyName.expression.kind === 209 /* BinaryExpression */ && computedPropertyName.expression.operatorToken.kind === 27 /* CommaToken */) { + return grammarErrorOnNode(computedPropertyName.expression, ts.Diagnostics.A_comma_expression_is_not_allowed_in_a_computed_property_name); + } + return false; + } + function checkGrammarForGenerator(node) { + if (node.asteriskToken) { + ts.Debug.assert(node.kind === 244 /* FunctionDeclaration */ || + node.kind === 201 /* FunctionExpression */ || + node.kind === 161 /* MethodDeclaration */); + if (node.flags & 8388608 /* Ambient */) { + return grammarErrorOnNode(node.asteriskToken, ts.Diagnostics.Generators_are_not_allowed_in_an_ambient_context); + } + if (!node.body) { + return grammarErrorOnNode(node.asteriskToken, ts.Diagnostics.An_overload_signature_cannot_be_declared_as_a_generator); + } + } + } + function checkGrammarForInvalidQuestionMark(questionToken, message) { + return !!questionToken && grammarErrorOnNode(questionToken, message); + } + function checkGrammarForInvalidExclamationToken(exclamationToken, message) { + return !!exclamationToken && grammarErrorOnNode(exclamationToken, message); + } + function checkGrammarObjectLiteralExpression(node, inDestructuring) { + var seen = ts.createUnderscoreEscapedMap(); + for (var _i = 0, _a = node.properties; _i < _a.length; _i++) { + var prop = _a[_i]; + if (prop.kind === 283 /* SpreadAssignment */) { + if (inDestructuring) { + // a rest property cannot be destructured any further + var expression = ts.skipParentheses(prop.expression); + if (ts.isArrayLiteralExpression(expression) || ts.isObjectLiteralExpression(expression)) { + return grammarErrorOnNode(prop.expression, ts.Diagnostics.A_rest_element_cannot_contain_a_binding_pattern); + } + } + continue; + } + var name = prop.name; + if (name.kind === 154 /* ComputedPropertyName */) { + // If the name is not a ComputedPropertyName, the grammar checking will skip it + checkGrammarComputedPropertyName(name); + } + if (prop.kind === 282 /* ShorthandPropertyAssignment */ && !inDestructuring && prop.objectAssignmentInitializer) { + // having objectAssignmentInitializer is only valid in ObjectAssignmentPattern + // outside of destructuring it is a syntax error + return grammarErrorOnNode(prop.equalsToken, ts.Diagnostics.can_only_be_used_in_an_object_literal_property_inside_a_destructuring_assignment); + } + if (name.kind === 76 /* PrivateIdentifier */) { + return grammarErrorOnNode(name, ts.Diagnostics.Private_identifiers_are_not_allowed_outside_class_bodies); + } + // Modifiers are never allowed on properties except for 'async' on a method declaration + if (prop.modifiers) { + // eslint-disable-next-line @typescript-eslint/no-unnecessary-type-assertion + for (var _b = 0, _c = prop.modifiers; _b < _c.length; _b++) { // TODO: GH#19955 + var mod = _c[_b]; + if (mod.kind !== 126 /* AsyncKeyword */ || prop.kind !== 161 /* MethodDeclaration */) { + grammarErrorOnNode(mod, ts.Diagnostics._0_modifier_cannot_be_used_here, ts.getTextOfNode(mod)); + } + } + } + // ECMA-262 11.1.5 Object Initializer + // If previous is not undefined then throw a SyntaxError exception if any of the following conditions are true + // a.This production is contained in strict code and IsDataDescriptor(previous) is true and + // IsDataDescriptor(propId.descriptor) is true. + // b.IsDataDescriptor(previous) is true and IsAccessorDescriptor(propId.descriptor) is true. + // c.IsAccessorDescriptor(previous) is true and IsDataDescriptor(propId.descriptor) is true. + // d.IsAccessorDescriptor(previous) is true and IsAccessorDescriptor(propId.descriptor) is true + // and either both previous and propId.descriptor have[[Get]] fields or both previous and propId.descriptor have[[Set]] fields + var currentKind = void 0; + switch (prop.kind) { + case 282 /* ShorthandPropertyAssignment */: + checkGrammarForInvalidExclamationToken(prop.exclamationToken, ts.Diagnostics.A_definite_assignment_assertion_is_not_permitted_in_this_context); + // falls through + case 281 /* PropertyAssignment */: + // Grammar checking for computedPropertyName and shorthandPropertyAssignment + checkGrammarForInvalidQuestionMark(prop.questionToken, ts.Diagnostics.An_object_member_cannot_be_declared_optional); + if (name.kind === 8 /* NumericLiteral */) { + checkGrammarNumericLiteral(name); + } + currentKind = 4 /* PropertyAssignment */; + break; + case 161 /* MethodDeclaration */: + currentKind = 8 /* Method */; + break; + case 163 /* GetAccessor */: + currentKind = 1 /* GetAccessor */; + break; + case 164 /* SetAccessor */: + currentKind = 2 /* SetAccessor */; + break; + default: + throw ts.Debug.assertNever(prop, "Unexpected syntax kind:" + prop.kind); + } + if (!inDestructuring) { + var effectiveName = ts.getPropertyNameForPropertyNameNode(name); + if (effectiveName === undefined) { + continue; + } + var existingKind = seen.get(effectiveName); + if (!existingKind) { + seen.set(effectiveName, currentKind); + } + else { + if ((currentKind & 12 /* PropertyAssignmentOrMethod */) && (existingKind & 12 /* PropertyAssignmentOrMethod */)) { + grammarErrorOnNode(name, ts.Diagnostics.Duplicate_identifier_0, ts.getTextOfNode(name)); + } + else if ((currentKind & 3 /* GetOrSetAccessor */) && (existingKind & 3 /* GetOrSetAccessor */)) { + if (existingKind !== 3 /* GetOrSetAccessor */ && currentKind !== existingKind) { + seen.set(effectiveName, currentKind | existingKind); + } + else { + return grammarErrorOnNode(name, ts.Diagnostics.An_object_literal_cannot_have_multiple_get_Slashset_accessors_with_the_same_name); + } + } + else { + return grammarErrorOnNode(name, ts.Diagnostics.An_object_literal_cannot_have_property_and_accessor_with_the_same_name); + } + } + } + } + } + function checkGrammarJsxElement(node) { + checkGrammarTypeArguments(node, node.typeArguments); + var seen = ts.createUnderscoreEscapedMap(); + for (var _i = 0, _a = node.attributes.properties; _i < _a.length; _i++) { + var attr = _a[_i]; + if (attr.kind === 275 /* JsxSpreadAttribute */) { + continue; + } + var name = attr.name, initializer = attr.initializer; + if (!seen.get(name.escapedText)) { + seen.set(name.escapedText, true); + } + else { + return grammarErrorOnNode(name, ts.Diagnostics.JSX_elements_cannot_have_multiple_attributes_with_the_same_name); + } + if (initializer && initializer.kind === 276 /* JsxExpression */ && !initializer.expression) { + return grammarErrorOnNode(initializer, ts.Diagnostics.JSX_attributes_must_only_be_assigned_a_non_empty_expression); + } + } + } + function checkGrammarJsxExpression(node) { + if (node.expression && ts.isCommaSequence(node.expression)) { + return grammarErrorOnNode(node.expression, ts.Diagnostics.JSX_expressions_may_not_use_the_comma_operator_Did_you_mean_to_write_an_array); + } + } + function checkGrammarForInOrForOfStatement(forInOrOfStatement) { + if (checkGrammarStatementInAmbientContext(forInOrOfStatement)) { + return true; + } + if (forInOrOfStatement.kind === 232 /* ForOfStatement */ && forInOrOfStatement.awaitModifier) { + if ((forInOrOfStatement.flags & 32768 /* AwaitContext */) === 0 /* None */) { + // use of 'for-await-of' in non-async function + var sourceFile = ts.getSourceFileOfNode(forInOrOfStatement); + if (!hasParseDiagnostics(sourceFile)) { + var diagnostic = ts.createDiagnosticForNode(forInOrOfStatement.awaitModifier, ts.Diagnostics.A_for_await_of_statement_is_only_allowed_within_an_async_function_or_async_generator); + var func = ts.getContainingFunction(forInOrOfStatement); + if (func && func.kind !== 162 /* Constructor */) { + ts.Debug.assert((ts.getFunctionFlags(func) & 2 /* Async */) === 0, "Enclosing function should never be an async function."); + var relatedInfo = ts.createDiagnosticForNode(func, ts.Diagnostics.Did_you_mean_to_mark_this_function_as_async); + ts.addRelatedInfo(diagnostic, relatedInfo); + } + diagnostics.add(diagnostic); + return true; + } + return false; + } + } + if (forInOrOfStatement.initializer.kind === 243 /* VariableDeclarationList */) { + var variableList = forInOrOfStatement.initializer; + if (!checkGrammarVariableDeclarationList(variableList)) { + var declarations = variableList.declarations; + // declarations.length can be zero if there is an error in variable declaration in for-of or for-in + // See http://www.ecma-international.org/ecma-262/6.0/#sec-for-in-and-for-of-statements for details + // For example: + // var let = 10; + // for (let of [1,2,3]) {} // this is invalid ES6 syntax + // for (let in [1,2,3]) {} // this is invalid ES6 syntax + // We will then want to skip on grammar checking on variableList declaration + if (!declarations.length) { + return false; + } + if (declarations.length > 1) { + var diagnostic = forInOrOfStatement.kind === 231 /* ForInStatement */ + ? ts.Diagnostics.Only_a_single_variable_declaration_is_allowed_in_a_for_in_statement + : ts.Diagnostics.Only_a_single_variable_declaration_is_allowed_in_a_for_of_statement; + return grammarErrorOnFirstToken(variableList.declarations[1], diagnostic); + } + var firstDeclaration = declarations[0]; + if (firstDeclaration.initializer) { + var diagnostic = forInOrOfStatement.kind === 231 /* ForInStatement */ + ? ts.Diagnostics.The_variable_declaration_of_a_for_in_statement_cannot_have_an_initializer + : ts.Diagnostics.The_variable_declaration_of_a_for_of_statement_cannot_have_an_initializer; + return grammarErrorOnNode(firstDeclaration.name, diagnostic); + } + if (firstDeclaration.type) { + var diagnostic = forInOrOfStatement.kind === 231 /* ForInStatement */ + ? ts.Diagnostics.The_left_hand_side_of_a_for_in_statement_cannot_use_a_type_annotation + : ts.Diagnostics.The_left_hand_side_of_a_for_of_statement_cannot_use_a_type_annotation; + return grammarErrorOnNode(firstDeclaration, diagnostic); + } + } + } + return false; + } + function checkGrammarAccessor(accessor) { + if (!(accessor.flags & 8388608 /* Ambient */)) { + if (languageVersion < 1 /* ES5 */) { + return grammarErrorOnNode(accessor.name, ts.Diagnostics.Accessors_are_only_available_when_targeting_ECMAScript_5_and_higher); + } + if (accessor.body === undefined && !ts.hasModifier(accessor, 128 /* Abstract */)) { + return grammarErrorAtPos(accessor, accessor.end - 1, ";".length, ts.Diagnostics._0_expected, "{"); + } + } + if (accessor.body && ts.hasModifier(accessor, 128 /* Abstract */)) { + return grammarErrorOnNode(accessor, ts.Diagnostics.An_abstract_accessor_cannot_have_an_implementation); + } + if (accessor.typeParameters) { + return grammarErrorOnNode(accessor.name, ts.Diagnostics.An_accessor_cannot_have_type_parameters); + } + if (!doesAccessorHaveCorrectParameterCount(accessor)) { + return grammarErrorOnNode(accessor.name, accessor.kind === 163 /* GetAccessor */ ? + ts.Diagnostics.A_get_accessor_cannot_have_parameters : + ts.Diagnostics.A_set_accessor_must_have_exactly_one_parameter); + } + if (accessor.kind === 164 /* SetAccessor */) { + if (accessor.type) { + return grammarErrorOnNode(accessor.name, ts.Diagnostics.A_set_accessor_cannot_have_a_return_type_annotation); + } + var parameter = ts.Debug.checkDefined(ts.getSetAccessorValueParameter(accessor), "Return value does not match parameter count assertion."); + if (parameter.dotDotDotToken) { + return grammarErrorOnNode(parameter.dotDotDotToken, ts.Diagnostics.A_set_accessor_cannot_have_rest_parameter); + } + if (parameter.questionToken) { + return grammarErrorOnNode(parameter.questionToken, ts.Diagnostics.A_set_accessor_cannot_have_an_optional_parameter); + } + if (parameter.initializer) { + return grammarErrorOnNode(accessor.name, ts.Diagnostics.A_set_accessor_parameter_cannot_have_an_initializer); + } + } + return false; + } + /** Does the accessor have the right number of parameters? + * A get accessor has no parameters or a single `this` parameter. + * A set accessor has one parameter or a `this` parameter and one more parameter. + */ + function doesAccessorHaveCorrectParameterCount(accessor) { + return getAccessorThisParameter(accessor) || accessor.parameters.length === (accessor.kind === 163 /* GetAccessor */ ? 0 : 1); + } + function getAccessorThisParameter(accessor) { + if (accessor.parameters.length === (accessor.kind === 163 /* GetAccessor */ ? 1 : 2)) { + return ts.getThisParameter(accessor); + } + } + function checkGrammarTypeOperatorNode(node) { + if (node.operator === 147 /* UniqueKeyword */) { + if (node.type.kind !== 144 /* SymbolKeyword */) { + return grammarErrorOnNode(node.type, ts.Diagnostics._0_expected, ts.tokenToString(144 /* SymbolKeyword */)); + } + var parent = ts.walkUpParenthesizedTypes(node.parent); + switch (parent.kind) { + case 242 /* VariableDeclaration */: + var decl = parent; + if (decl.name.kind !== 75 /* Identifier */) { + return grammarErrorOnNode(node, ts.Diagnostics.unique_symbol_types_may_not_be_used_on_a_variable_declaration_with_a_binding_name); + } + if (!ts.isVariableDeclarationInVariableStatement(decl)) { + return grammarErrorOnNode(node, ts.Diagnostics.unique_symbol_types_are_only_allowed_on_variables_in_a_variable_statement); + } + if (!(decl.parent.flags & 2 /* Const */)) { + return grammarErrorOnNode(parent.name, ts.Diagnostics.A_variable_whose_type_is_a_unique_symbol_type_must_be_const); + } + break; + case 159 /* PropertyDeclaration */: + if (!ts.hasModifier(parent, 32 /* Static */) || + !ts.hasModifier(parent, 64 /* Readonly */)) { + return grammarErrorOnNode(parent.name, ts.Diagnostics.A_property_of_a_class_whose_type_is_a_unique_symbol_type_must_be_both_static_and_readonly); + } + break; + case 158 /* PropertySignature */: + if (!ts.hasModifier(parent, 64 /* Readonly */)) { + return grammarErrorOnNode(parent.name, ts.Diagnostics.A_property_of_an_interface_or_type_literal_whose_type_is_a_unique_symbol_type_must_be_readonly); + } + break; + default: + return grammarErrorOnNode(node, ts.Diagnostics.unique_symbol_types_are_not_allowed_here); + } + } + else if (node.operator === 138 /* ReadonlyKeyword */) { + if (node.type.kind !== 174 /* ArrayType */ && node.type.kind !== 175 /* TupleType */) { + return grammarErrorOnFirstToken(node, ts.Diagnostics.readonly_type_modifier_is_only_permitted_on_array_and_tuple_literal_types, ts.tokenToString(144 /* SymbolKeyword */)); + } + } + } + function checkGrammarForInvalidDynamicName(node, message) { + if (isNonBindableDynamicName(node)) { + return grammarErrorOnNode(node, message); + } + } + function checkGrammarMethod(node) { + if (checkGrammarFunctionLikeDeclaration(node)) { + return true; + } + if (node.kind === 161 /* MethodDeclaration */) { + if (node.parent.kind === 193 /* ObjectLiteralExpression */) { + // We only disallow modifier on a method declaration if it is a property of object-literal-expression + if (node.modifiers && !(node.modifiers.length === 1 && ts.first(node.modifiers).kind === 126 /* AsyncKeyword */)) { + return grammarErrorOnFirstToken(node, ts.Diagnostics.Modifiers_cannot_appear_here); + } + else if (checkGrammarForInvalidQuestionMark(node.questionToken, ts.Diagnostics.An_object_member_cannot_be_declared_optional)) { + return true; + } + else if (checkGrammarForInvalidExclamationToken(node.exclamationToken, ts.Diagnostics.A_definite_assignment_assertion_is_not_permitted_in_this_context)) { + return true; + } + else if (node.body === undefined) { + return grammarErrorAtPos(node, node.end - 1, ";".length, ts.Diagnostics._0_expected, "{"); + } + } + if (checkGrammarForGenerator(node)) { + return true; + } + } + if (ts.isClassLike(node.parent)) { + // Technically, computed properties in ambient contexts is disallowed + // for property declarations and accessors too, not just methods. + // However, property declarations disallow computed names in general, + // and accessors are not allowed in ambient contexts in general, + // so this error only really matters for methods. + if (node.flags & 8388608 /* Ambient */) { + return checkGrammarForInvalidDynamicName(node.name, ts.Diagnostics.A_computed_property_name_in_an_ambient_context_must_refer_to_an_expression_whose_type_is_a_literal_type_or_a_unique_symbol_type); + } + else if (node.kind === 161 /* MethodDeclaration */ && !node.body) { + return checkGrammarForInvalidDynamicName(node.name, ts.Diagnostics.A_computed_property_name_in_a_method_overload_must_refer_to_an_expression_whose_type_is_a_literal_type_or_a_unique_symbol_type); + } + } + else if (node.parent.kind === 246 /* InterfaceDeclaration */) { + return checkGrammarForInvalidDynamicName(node.name, ts.Diagnostics.A_computed_property_name_in_an_interface_must_refer_to_an_expression_whose_type_is_a_literal_type_or_a_unique_symbol_type); + } + else if (node.parent.kind === 173 /* TypeLiteral */) { + return checkGrammarForInvalidDynamicName(node.name, ts.Diagnostics.A_computed_property_name_in_a_type_literal_must_refer_to_an_expression_whose_type_is_a_literal_type_or_a_unique_symbol_type); + } + } + function checkGrammarBreakOrContinueStatement(node) { + var current = node; + while (current) { + if (ts.isFunctionLike(current)) { + return grammarErrorOnNode(node, ts.Diagnostics.Jump_target_cannot_cross_function_boundary); + } + switch (current.kind) { + case 238 /* LabeledStatement */: + if (node.label && current.label.escapedText === node.label.escapedText) { + // found matching label - verify that label usage is correct + // continue can only target labels that are on iteration statements + var isMisplacedContinueLabel = node.kind === 233 /* ContinueStatement */ + && !ts.isIterationStatement(current.statement, /*lookInLabeledStatement*/ true); + if (isMisplacedContinueLabel) { + return grammarErrorOnNode(node, ts.Diagnostics.A_continue_statement_can_only_jump_to_a_label_of_an_enclosing_iteration_statement); + } + return false; + } + break; + case 237 /* SwitchStatement */: + if (node.kind === 234 /* BreakStatement */ && !node.label) { + // unlabeled break within switch statement - ok + return false; + } + break; + default: + if (ts.isIterationStatement(current, /*lookInLabeledStatement*/ false) && !node.label) { + // unlabeled break or continue within iteration statement - ok + return false; + } + break; + } + current = current.parent; + } + if (node.label) { + var message = node.kind === 234 /* BreakStatement */ + ? ts.Diagnostics.A_break_statement_can_only_jump_to_a_label_of_an_enclosing_statement + : ts.Diagnostics.A_continue_statement_can_only_jump_to_a_label_of_an_enclosing_iteration_statement; + return grammarErrorOnNode(node, message); + } + else { + var message = node.kind === 234 /* BreakStatement */ + ? ts.Diagnostics.A_break_statement_can_only_be_used_within_an_enclosing_iteration_or_switch_statement + : ts.Diagnostics.A_continue_statement_can_only_be_used_within_an_enclosing_iteration_statement; + return grammarErrorOnNode(node, message); + } + } + function checkGrammarBindingElement(node) { + if (node.dotDotDotToken) { + var elements = node.parent.elements; + if (node !== ts.last(elements)) { + return grammarErrorOnNode(node, ts.Diagnostics.A_rest_element_must_be_last_in_a_destructuring_pattern); + } + checkGrammarForDisallowedTrailingComma(elements, ts.Diagnostics.A_rest_parameter_or_binding_pattern_may_not_have_a_trailing_comma); + if (node.propertyName) { + return grammarErrorOnNode(node.name, ts.Diagnostics.A_rest_element_cannot_have_a_property_name); + } + if (node.initializer) { + // Error on equals token which immediately precedes the initializer + return grammarErrorAtPos(node, node.initializer.pos - 1, 1, ts.Diagnostics.A_rest_element_cannot_have_an_initializer); + } + } + } + function isStringOrNumberLiteralExpression(expr) { + return ts.isStringOrNumericLiteralLike(expr) || + expr.kind === 207 /* PrefixUnaryExpression */ && expr.operator === 40 /* MinusToken */ && + expr.operand.kind === 8 /* NumericLiteral */; + } + function isBigIntLiteralExpression(expr) { + return expr.kind === 9 /* BigIntLiteral */ || + expr.kind === 207 /* PrefixUnaryExpression */ && expr.operator === 40 /* MinusToken */ && + expr.operand.kind === 9 /* BigIntLiteral */; + } + function isSimpleLiteralEnumReference(expr) { + if ((ts.isPropertyAccessExpression(expr) || (ts.isElementAccessExpression(expr) && isStringOrNumberLiteralExpression(expr.argumentExpression))) && + ts.isEntityNameExpression(expr.expression)) { + return !!(checkExpressionCached(expr).flags & 1024 /* EnumLiteral */); + } + } + function checkAmbientInitializer(node) { + var initializer = node.initializer; + if (initializer) { + var isInvalidInitializer = !(isStringOrNumberLiteralExpression(initializer) || + isSimpleLiteralEnumReference(initializer) || + initializer.kind === 106 /* TrueKeyword */ || initializer.kind === 91 /* FalseKeyword */ || + isBigIntLiteralExpression(initializer)); + var isConstOrReadonly = ts.isDeclarationReadonly(node) || ts.isVariableDeclaration(node) && ts.isVarConst(node); + if (isConstOrReadonly && !node.type) { + if (isInvalidInitializer) { + return grammarErrorOnNode(initializer, ts.Diagnostics.A_const_initializer_in_an_ambient_context_must_be_a_string_or_numeric_literal_or_literal_enum_reference); + } + } + else { + return grammarErrorOnNode(initializer, ts.Diagnostics.Initializers_are_not_allowed_in_ambient_contexts); + } + if (!isConstOrReadonly || isInvalidInitializer) { + return grammarErrorOnNode(initializer, ts.Diagnostics.Initializers_are_not_allowed_in_ambient_contexts); + } + } + } + function checkGrammarVariableDeclaration(node) { + if (node.parent.parent.kind !== 231 /* ForInStatement */ && node.parent.parent.kind !== 232 /* ForOfStatement */) { + if (node.flags & 8388608 /* Ambient */) { + checkAmbientInitializer(node); + } + else if (!node.initializer) { + if (ts.isBindingPattern(node.name) && !ts.isBindingPattern(node.parent)) { + return grammarErrorOnNode(node, ts.Diagnostics.A_destructuring_declaration_must_have_an_initializer); + } + if (ts.isVarConst(node)) { + return grammarErrorOnNode(node, ts.Diagnostics.const_declarations_must_be_initialized); + } + } + } + if (node.exclamationToken && (node.parent.parent.kind !== 225 /* VariableStatement */ || !node.type || node.initializer || node.flags & 8388608 /* Ambient */)) { + return grammarErrorOnNode(node.exclamationToken, ts.Diagnostics.Definite_assignment_assertions_can_only_be_used_along_with_a_type_annotation); + } + var moduleKind = ts.getEmitModuleKind(compilerOptions); + if (moduleKind < ts.ModuleKind.ES2015 && moduleKind !== ts.ModuleKind.System && !compilerOptions.noEmit && + !(node.parent.parent.flags & 8388608 /* Ambient */) && ts.hasModifier(node.parent.parent, 1 /* Export */)) { + checkESModuleMarker(node.name); + } + var checkLetConstNames = (ts.isLet(node) || ts.isVarConst(node)); + // 1. LexicalDeclaration : LetOrConst BindingList ; + // It is a Syntax Error if the BoundNames of BindingList contains "let". + // 2. ForDeclaration: ForDeclaration : LetOrConst ForBinding + // It is a Syntax Error if the BoundNames of ForDeclaration contains "let". + // It is a SyntaxError if a VariableDeclaration or VariableDeclarationNoIn occurs within strict code + // and its Identifier is eval or arguments + return checkLetConstNames && checkGrammarNameInLetOrConstDeclarations(node.name); + } + function checkESModuleMarker(name) { + if (name.kind === 75 /* Identifier */) { + if (ts.idText(name) === "__esModule") { + return grammarErrorOnNode(name, ts.Diagnostics.Identifier_expected_esModule_is_reserved_as_an_exported_marker_when_transforming_ECMAScript_modules); + } + } + else { + var elements = name.elements; + for (var _i = 0, elements_1 = elements; _i < elements_1.length; _i++) { + var element = elements_1[_i]; + if (!ts.isOmittedExpression(element)) { + return checkESModuleMarker(element.name); + } + } + } + return false; + } + function checkGrammarNameInLetOrConstDeclarations(name) { + if (name.kind === 75 /* Identifier */) { + if (name.originalKeywordKind === 115 /* LetKeyword */) { + return grammarErrorOnNode(name, ts.Diagnostics.let_is_not_allowed_to_be_used_as_a_name_in_let_or_const_declarations); + } + } + else { + var elements = name.elements; + for (var _i = 0, elements_2 = elements; _i < elements_2.length; _i++) { + var element = elements_2[_i]; + if (!ts.isOmittedExpression(element)) { + checkGrammarNameInLetOrConstDeclarations(element.name); + } + } + } + return false; + } + function checkGrammarVariableDeclarationList(declarationList) { + var declarations = declarationList.declarations; + if (checkGrammarForDisallowedTrailingComma(declarationList.declarations)) { + return true; + } + if (!declarationList.declarations.length) { + return grammarErrorAtPos(declarationList, declarations.pos, declarations.end - declarations.pos, ts.Diagnostics.Variable_declaration_list_cannot_be_empty); + } + return false; + } + function allowLetAndConstDeclarations(parent) { + switch (parent.kind) { + case 227 /* IfStatement */: + case 228 /* DoStatement */: + case 229 /* WhileStatement */: + case 236 /* WithStatement */: + case 230 /* ForStatement */: + case 231 /* ForInStatement */: + case 232 /* ForOfStatement */: + return false; + case 238 /* LabeledStatement */: + return allowLetAndConstDeclarations(parent.parent); + } + return true; + } + function checkGrammarForDisallowedLetOrConstStatement(node) { + if (!allowLetAndConstDeclarations(node.parent)) { + if (ts.isLet(node.declarationList)) { + return grammarErrorOnNode(node, ts.Diagnostics.let_declarations_can_only_be_declared_inside_a_block); + } + else if (ts.isVarConst(node.declarationList)) { + return grammarErrorOnNode(node, ts.Diagnostics.const_declarations_can_only_be_declared_inside_a_block); + } + } + } + function checkGrammarMetaProperty(node) { + var escapedText = node.name.escapedText; + switch (node.keywordToken) { + case 99 /* NewKeyword */: + if (escapedText !== "target") { + return grammarErrorOnNode(node.name, ts.Diagnostics._0_is_not_a_valid_meta_property_for_keyword_1_Did_you_mean_2, node.name.escapedText, ts.tokenToString(node.keywordToken), "target"); + } + break; + case 96 /* ImportKeyword */: + if (escapedText !== "meta") { + return grammarErrorOnNode(node.name, ts.Diagnostics._0_is_not_a_valid_meta_property_for_keyword_1_Did_you_mean_2, node.name.escapedText, ts.tokenToString(node.keywordToken), "meta"); + } + break; + } + } + function hasParseDiagnostics(sourceFile) { + return sourceFile.parseDiagnostics.length > 0; + } + function grammarErrorOnFirstToken(node, message, arg0, arg1, arg2) { + var sourceFile = ts.getSourceFileOfNode(node); + if (!hasParseDiagnostics(sourceFile)) { + var span = ts.getSpanOfTokenAtPosition(sourceFile, node.pos); + diagnostics.add(ts.createFileDiagnostic(sourceFile, span.start, span.length, message, arg0, arg1, arg2)); + return true; + } + return false; + } + function grammarErrorAtPos(nodeForSourceFile, start, length, message, arg0, arg1, arg2) { + var sourceFile = ts.getSourceFileOfNode(nodeForSourceFile); + if (!hasParseDiagnostics(sourceFile)) { + diagnostics.add(ts.createFileDiagnostic(sourceFile, start, length, message, arg0, arg1, arg2)); + return true; + } + return false; + } + function grammarErrorOnNode(node, message, arg0, arg1, arg2) { + var sourceFile = ts.getSourceFileOfNode(node); + if (!hasParseDiagnostics(sourceFile)) { + diagnostics.add(ts.createDiagnosticForNode(node, message, arg0, arg1, arg2)); + return true; + } + return false; + } + function checkGrammarConstructorTypeParameters(node) { + var jsdocTypeParameters = ts.isInJSFile(node) ? ts.getJSDocTypeParameterDeclarations(node) : undefined; + var range = node.typeParameters || jsdocTypeParameters && ts.firstOrUndefined(jsdocTypeParameters); + if (range) { + var pos = range.pos === range.end ? range.pos : ts.skipTrivia(ts.getSourceFileOfNode(node).text, range.pos); + return grammarErrorAtPos(node, pos, range.end - pos, ts.Diagnostics.Type_parameters_cannot_appear_on_a_constructor_declaration); + } + } + function checkGrammarConstructorTypeAnnotation(node) { + var type = ts.getEffectiveReturnTypeNode(node); + if (type) { + return grammarErrorOnNode(type, ts.Diagnostics.Type_annotation_cannot_appear_on_a_constructor_declaration); + } + } + function checkGrammarProperty(node) { + if (ts.isClassLike(node.parent)) { + if (ts.isStringLiteral(node.name) && node.name.text === "constructor") { + return grammarErrorOnNode(node.name, ts.Diagnostics.Classes_may_not_have_a_field_named_constructor); + } + if (checkGrammarForInvalidDynamicName(node.name, ts.Diagnostics.A_computed_property_name_in_a_class_property_declaration_must_refer_to_an_expression_whose_type_is_a_literal_type_or_a_unique_symbol_type)) { + return true; + } + if (languageVersion < 2 /* ES2015 */ && ts.isPrivateIdentifier(node.name)) { + return grammarErrorOnNode(node.name, ts.Diagnostics.Private_identifiers_are_only_available_when_targeting_ECMAScript_2015_and_higher); + } + } + else if (node.parent.kind === 246 /* InterfaceDeclaration */) { + if (checkGrammarForInvalidDynamicName(node.name, ts.Diagnostics.A_computed_property_name_in_an_interface_must_refer_to_an_expression_whose_type_is_a_literal_type_or_a_unique_symbol_type)) { + return true; + } + if (node.initializer) { + return grammarErrorOnNode(node.initializer, ts.Diagnostics.An_interface_property_cannot_have_an_initializer); + } + } + else if (node.parent.kind === 173 /* TypeLiteral */) { + if (checkGrammarForInvalidDynamicName(node.name, ts.Diagnostics.A_computed_property_name_in_a_type_literal_must_refer_to_an_expression_whose_type_is_a_literal_type_or_a_unique_symbol_type)) { + return true; + } + if (node.initializer) { + return grammarErrorOnNode(node.initializer, ts.Diagnostics.A_type_literal_property_cannot_have_an_initializer); + } + } + if (node.flags & 8388608 /* Ambient */) { + checkAmbientInitializer(node); + } + if (ts.isPropertyDeclaration(node) && node.exclamationToken && (!ts.isClassLike(node.parent) || !node.type || node.initializer || + node.flags & 8388608 /* Ambient */ || ts.hasModifier(node, 32 /* Static */ | 128 /* Abstract */))) { + return grammarErrorOnNode(node.exclamationToken, ts.Diagnostics.A_definite_assignment_assertion_is_not_permitted_in_this_context); + } + } + function checkGrammarTopLevelElementForRequiredDeclareModifier(node) { + // A declare modifier is required for any top level .d.ts declaration except export=, export default, export as namespace + // interfaces and imports categories: + // + // DeclarationElement: + // ExportAssignment + // export_opt InterfaceDeclaration + // export_opt TypeAliasDeclaration + // export_opt ImportDeclaration + // export_opt ExternalImportDeclaration + // export_opt AmbientDeclaration + // + // TODO: The spec needs to be amended to reflect this grammar. + if (node.kind === 246 /* InterfaceDeclaration */ || + node.kind === 247 /* TypeAliasDeclaration */ || + node.kind === 254 /* ImportDeclaration */ || + node.kind === 253 /* ImportEqualsDeclaration */ || + node.kind === 260 /* ExportDeclaration */ || + node.kind === 259 /* ExportAssignment */ || + node.kind === 252 /* NamespaceExportDeclaration */ || + ts.hasModifier(node, 2 /* Ambient */ | 1 /* Export */ | 512 /* Default */)) { + return false; + } + return grammarErrorOnFirstToken(node, ts.Diagnostics.Top_level_declarations_in_d_ts_files_must_start_with_either_a_declare_or_export_modifier); + } + function checkGrammarTopLevelElementsForRequiredDeclareModifier(file) { + for (var _i = 0, _a = file.statements; _i < _a.length; _i++) { + var decl = _a[_i]; + if (ts.isDeclaration(decl) || decl.kind === 225 /* VariableStatement */) { + if (checkGrammarTopLevelElementForRequiredDeclareModifier(decl)) { + return true; + } + } + } + return false; + } + function checkGrammarSourceFile(node) { + return !!(node.flags & 8388608 /* Ambient */) && checkGrammarTopLevelElementsForRequiredDeclareModifier(node); + } + function checkGrammarStatementInAmbientContext(node) { + if (node.flags & 8388608 /* Ambient */) { + // Find containing block which is either Block, ModuleBlock, SourceFile + var links = getNodeLinks(node); + if (!links.hasReportedStatementInAmbientContext && (ts.isFunctionLike(node.parent) || ts.isAccessor(node.parent))) { + return getNodeLinks(node).hasReportedStatementInAmbientContext = grammarErrorOnFirstToken(node, ts.Diagnostics.An_implementation_cannot_be_declared_in_ambient_contexts); + } + // We are either parented by another statement, or some sort of block. + // If we're in a block, we only want to really report an error once + // to prevent noisiness. So use a bit on the block to indicate if + // this has already been reported, and don't report if it has. + // + if (node.parent.kind === 223 /* Block */ || node.parent.kind === 250 /* ModuleBlock */ || node.parent.kind === 290 /* SourceFile */) { + var links_2 = getNodeLinks(node.parent); + // Check if the containing block ever report this error + if (!links_2.hasReportedStatementInAmbientContext) { + return links_2.hasReportedStatementInAmbientContext = grammarErrorOnFirstToken(node, ts.Diagnostics.Statements_are_not_allowed_in_ambient_contexts); + } + } + else { + // We must be parented by a statement. If so, there's no need + // to report the error as our parent will have already done it. + // Debug.assert(isStatement(node.parent)); + } + } + return false; + } + function checkGrammarNumericLiteral(node) { + // Grammar checking + if (node.numericLiteralFlags & 32 /* Octal */) { + var diagnosticMessage = void 0; + if (languageVersion >= 1 /* ES5 */) { + diagnosticMessage = ts.Diagnostics.Octal_literals_are_not_available_when_targeting_ECMAScript_5_and_higher_Use_the_syntax_0; + } + else if (ts.isChildOfNodeWithKind(node, 187 /* LiteralType */)) { + diagnosticMessage = ts.Diagnostics.Octal_literal_types_must_use_ES2015_syntax_Use_the_syntax_0; + } + else if (ts.isChildOfNodeWithKind(node, 284 /* EnumMember */)) { + diagnosticMessage = ts.Diagnostics.Octal_literals_are_not_allowed_in_enums_members_initializer_Use_the_syntax_0; + } + if (diagnosticMessage) { + var withMinus = ts.isPrefixUnaryExpression(node.parent) && node.parent.operator === 40 /* MinusToken */; + var literal = (withMinus ? "-" : "") + "0o" + node.text; + return grammarErrorOnNode(withMinus ? node.parent : node, diagnosticMessage, literal); + } + } + // Realism (size) checking + checkNumericLiteralValueSize(node); + return false; + } + function checkNumericLiteralValueSize(node) { + // Scientific notation (e.g. 2e54 and 1e00000000010) can't be converted to bigint + // Literals with 15 or fewer characters aren't long enough to reach past 2^53 - 1 + // Fractional numbers (e.g. 9000000000000000.001) are inherently imprecise anyway + if (node.numericLiteralFlags & 16 /* Scientific */ || node.text.length <= 15 || node.text.indexOf(".") !== -1) { + return; + } + // We can't rely on the runtime to accurately store and compare extremely large numeric values + // Even for internal use, we use getTextOfNode: https://github.com/microsoft/TypeScript/issues/33298 + // Thus, if the runtime claims a too-large number is lower than Number.MAX_SAFE_INTEGER, + // it's likely addition operations on it will fail too + var apparentValue = +ts.getTextOfNode(node); + if (apparentValue <= Math.pow(2, 53) - 1 && apparentValue + 1 > apparentValue) { + return; + } + addErrorOrSuggestion(/*isError*/ false, ts.createDiagnosticForNode(node, ts.Diagnostics.Numeric_literals_with_absolute_values_equal_to_2_53_or_greater_are_too_large_to_be_represented_accurately_as_integers)); + } + function checkGrammarBigIntLiteral(node) { + var literalType = ts.isLiteralTypeNode(node.parent) || + ts.isPrefixUnaryExpression(node.parent) && ts.isLiteralTypeNode(node.parent.parent); + if (!literalType) { + if (languageVersion < 7 /* ES2020 */) { + if (grammarErrorOnNode(node, ts.Diagnostics.BigInt_literals_are_not_available_when_targeting_lower_than_ES2020)) { + return true; + } + } + } + return false; + } + function grammarErrorAfterFirstToken(node, message, arg0, arg1, arg2) { + var sourceFile = ts.getSourceFileOfNode(node); + if (!hasParseDiagnostics(sourceFile)) { + var span = ts.getSpanOfTokenAtPosition(sourceFile, node.pos); + diagnostics.add(ts.createFileDiagnostic(sourceFile, ts.textSpanEnd(span), /*length*/ 0, message, arg0, arg1, arg2)); + return true; + } + return false; + } + function getAmbientModules() { + if (!ambientModulesCache) { + ambientModulesCache = []; + globals.forEach(function (global, sym) { + // No need to `unescapeLeadingUnderscores`, an escaped symbol is never an ambient module. + if (ambientModuleSymbolRegex.test(sym)) { + ambientModulesCache.push(global); + } + }); + } + return ambientModulesCache; + } + function checkGrammarImportClause(node) { + if (node.isTypeOnly && node.name && node.namedBindings) { + return grammarErrorOnNode(node, ts.Diagnostics.A_type_only_import_can_specify_a_default_import_or_named_bindings_but_not_both); + } + return false; + } + function checkGrammarImportCallExpression(node) { + if (moduleKind === ts.ModuleKind.ES2015) { + return grammarErrorOnNode(node, ts.Diagnostics.Dynamic_imports_are_only_supported_when_the_module_flag_is_set_to_es2020_esnext_commonjs_amd_system_or_umd); + } + if (node.typeArguments) { + return grammarErrorOnNode(node, ts.Diagnostics.Dynamic_import_cannot_have_type_arguments); + } + var nodeArguments = node.arguments; + if (nodeArguments.length !== 1) { + return grammarErrorOnNode(node, ts.Diagnostics.Dynamic_import_must_have_one_specifier_as_an_argument); + } + checkGrammarForDisallowedTrailingComma(nodeArguments); + // see: parseArgumentOrArrayLiteralElement...we use this function which parse arguments of callExpression to parse specifier for dynamic import. + // parseArgumentOrArrayLiteralElement allows spread element to be in an argument list which is not allowed as specifier in dynamic import. + if (ts.isSpreadElement(nodeArguments[0])) { + return grammarErrorOnNode(nodeArguments[0], ts.Diagnostics.Specifier_of_dynamic_import_cannot_be_spread_element); + } + return false; + } + function findMatchingTypeReferenceOrTypeAliasReference(source, unionTarget) { + var sourceObjectFlags = ts.getObjectFlags(source); + if (sourceObjectFlags & (4 /* Reference */ | 16 /* Anonymous */) && unionTarget.flags & 1048576 /* Union */) { + return ts.find(unionTarget.types, function (target) { + if (target.flags & 524288 /* Object */) { + var overlapObjFlags = sourceObjectFlags & ts.getObjectFlags(target); + if (overlapObjFlags & 4 /* Reference */) { + return source.target === target.target; + } + if (overlapObjFlags & 16 /* Anonymous */) { + return !!source.aliasSymbol && source.aliasSymbol === target.aliasSymbol; + } + } + return false; + }); + } + } + function findBestTypeForObjectLiteral(source, unionTarget) { + if (ts.getObjectFlags(source) & 128 /* ObjectLiteral */ && forEachType(unionTarget, isArrayLikeType)) { + return ts.find(unionTarget.types, function (t) { return !isArrayLikeType(t); }); + } + } + function findBestTypeForInvokable(source, unionTarget) { + var signatureKind = 0 /* Call */; + var hasSignatures = getSignaturesOfType(source, signatureKind).length > 0 || + (signatureKind = 1 /* Construct */, getSignaturesOfType(source, signatureKind).length > 0); + if (hasSignatures) { + return ts.find(unionTarget.types, function (t) { return getSignaturesOfType(t, signatureKind).length > 0; }); + } + } + function findMostOverlappyType(source, unionTarget) { + var bestMatch; + var matchingCount = 0; + for (var _i = 0, _a = unionTarget.types; _i < _a.length; _i++) { + var target = _a[_i]; + var overlap = getIntersectionType([getIndexType(source), getIndexType(target)]); + if (overlap.flags & 4194304 /* Index */) { + // perfect overlap of keys + bestMatch = target; + matchingCount = Infinity; + } + else if (overlap.flags & 1048576 /* Union */) { + // We only want to account for literal types otherwise. + // If we have a union of index types, it seems likely that we + // needed to elaborate between two generic mapped types anyway. + var len = ts.length(ts.filter(overlap.types, isUnitType)); + if (len >= matchingCount) { + bestMatch = target; + matchingCount = len; + } + } + else if (isUnitType(overlap) && 1 >= matchingCount) { + bestMatch = target; + matchingCount = 1; + } + } + return bestMatch; + } + function filterPrimitivesIfContainsNonPrimitive(type) { + if (maybeTypeOfKind(type, 67108864 /* NonPrimitive */)) { + var result = filterType(type, function (t) { return !(t.flags & 131068 /* Primitive */); }); + if (!(result.flags & 131072 /* Never */)) { + return result; + } + } + return type; + } + // Keep this up-to-date with the same logic within `getApparentTypeOfContextualType`, since they should behave similarly + function findMatchingDiscriminantType(source, target, isRelatedTo, skipPartial) { + if (target.flags & 1048576 /* Union */ && source.flags & (2097152 /* Intersection */ | 524288 /* Object */)) { + var sourceProperties = getPropertiesOfType(source); + if (sourceProperties) { + var sourcePropertiesFiltered = findDiscriminantProperties(sourceProperties, target); + if (sourcePropertiesFiltered) { + return discriminateTypeByDiscriminableItems(target, ts.map(sourcePropertiesFiltered, function (p) { return [function () { return getTypeOfSymbol(p); }, p.escapedName]; }), isRelatedTo, /*defaultValue*/ undefined, skipPartial); + } + } + } + return undefined; + } + } + ts.createTypeChecker = createTypeChecker; + function isNotAccessor(declaration) { + // Accessors check for their own matching duplicates, and in contexts where they are valid, there are already duplicate identifier checks + return !ts.isAccessor(declaration); + } + function isNotOverload(declaration) { + return (declaration.kind !== 244 /* FunctionDeclaration */ && declaration.kind !== 161 /* MethodDeclaration */) || + !!declaration.body; + } + /** Like 'isDeclarationName', but returns true for LHS of `import { x as y }` or `export { x as y }`. */ + function isDeclarationNameOrImportPropertyName(name) { + switch (name.parent.kind) { + case 258 /* ImportSpecifier */: + case 263 /* ExportSpecifier */: + return ts.isIdentifier(name); + default: + return ts.isDeclarationName(name); + } + } + function isSomeImportDeclaration(decl) { + switch (decl.kind) { + case 255 /* ImportClause */: // For default import + case 253 /* ImportEqualsDeclaration */: + case 256 /* NamespaceImport */: + case 258 /* ImportSpecifier */: // For rename import `x as y` + return true; + case 75 /* Identifier */: + // For regular import, `decl` is an Identifier under the ImportSpecifier. + return decl.parent.kind === 258 /* ImportSpecifier */; + default: + return false; + } + } + var JsxNames; + (function (JsxNames) { + JsxNames.JSX = "JSX"; + JsxNames.IntrinsicElements = "IntrinsicElements"; + JsxNames.ElementClass = "ElementClass"; + JsxNames.ElementAttributesPropertyNameContainer = "ElementAttributesProperty"; // TODO: Deprecate and remove support + JsxNames.ElementChildrenAttributeNameContainer = "ElementChildrenAttribute"; + JsxNames.Element = "Element"; + JsxNames.IntrinsicAttributes = "IntrinsicAttributes"; + JsxNames.IntrinsicClassAttributes = "IntrinsicClassAttributes"; + JsxNames.LibraryManagedAttributes = "LibraryManagedAttributes"; + })(JsxNames || (JsxNames = {})); + function getIterationTypesKeyFromIterationTypeKind(typeKind) { + switch (typeKind) { + case 0 /* Yield */: return "yieldType"; + case 1 /* Return */: return "returnType"; + case 2 /* Next */: return "nextType"; + } + } + function signatureHasRestParameter(s) { + return !!(s.flags & 1 /* HasRestParameter */); + } + ts.signatureHasRestParameter = signatureHasRestParameter; + function signatureHasLiteralTypes(s) { + return !!(s.flags & 2 /* HasLiteralTypes */); + } + ts.signatureHasLiteralTypes = signatureHasLiteralTypes; +})(ts || (ts = {})); +var ts; +(function (ts) { + function createSynthesizedNode(kind) { + var node = ts.createNode(kind, -1, -1); + node.flags |= 8 /* Synthesized */; + return node; + } + /* @internal */ + function updateNode(updated, original) { + if (updated !== original) { + setOriginalNode(updated, original); + setTextRange(updated, original); + ts.aggregateTransformFlags(updated); + } + return updated; + } + ts.updateNode = updateNode; + /** + * Make `elements` into a `NodeArray`. If `elements` is `undefined`, returns an empty `NodeArray`. + */ + function createNodeArray(elements, hasTrailingComma) { + if (!elements || elements === ts.emptyArray) { + elements = []; + } + else if (ts.isNodeArray(elements)) { + return elements; + } + var array = elements; + array.pos = -1; + array.end = -1; + array.hasTrailingComma = hasTrailingComma; + return array; + } + ts.createNodeArray = createNodeArray; + /** + * Creates a shallow, memberwise clone of a node with no source map location. + */ + /* @internal */ + function getSynthesizedClone(node) { + // We don't use "clone" from core.ts here, as we need to preserve the prototype chain of + // the original node. We also need to exclude specific properties and only include own- + // properties (to skip members already defined on the shared prototype). + if (node === undefined) { + return node; + } + var clone = createSynthesizedNode(node.kind); + clone.flags |= node.flags; + setOriginalNode(clone, node); + for (var key in node) { + if (clone.hasOwnProperty(key) || !node.hasOwnProperty(key)) { + continue; + } + clone[key] = node[key]; + } + return clone; + } + ts.getSynthesizedClone = getSynthesizedClone; + function createLiteral(value, isSingleQuote) { + if (typeof value === "number") { + return createNumericLiteral(value + ""); + } + // eslint-disable-next-line no-in-operator + if (typeof value === "object" && "base10Value" in value) { // PseudoBigInt + return createBigIntLiteral(ts.pseudoBigIntToString(value) + "n"); + } + if (typeof value === "boolean") { + return value ? createTrue() : createFalse(); + } + if (ts.isString(value)) { + var res = createStringLiteral(value); + if (isSingleQuote) + res.singleQuote = true; + return res; + } + return createLiteralFromNode(value); + } + ts.createLiteral = createLiteral; + function createNumericLiteral(value, numericLiteralFlags) { + if (numericLiteralFlags === void 0) { numericLiteralFlags = 0 /* None */; } + var node = createSynthesizedNode(8 /* NumericLiteral */); + node.text = value; + node.numericLiteralFlags = numericLiteralFlags; + return node; + } + ts.createNumericLiteral = createNumericLiteral; + function createBigIntLiteral(value) { + var node = createSynthesizedNode(9 /* BigIntLiteral */); + node.text = value; + return node; + } + ts.createBigIntLiteral = createBigIntLiteral; + function createStringLiteral(text) { + var node = createSynthesizedNode(10 /* StringLiteral */); + node.text = text; + return node; + } + ts.createStringLiteral = createStringLiteral; + function createRegularExpressionLiteral(text) { + var node = createSynthesizedNode(13 /* RegularExpressionLiteral */); + node.text = text; + return node; + } + ts.createRegularExpressionLiteral = createRegularExpressionLiteral; + function createLiteralFromNode(sourceNode) { + var node = createStringLiteral(ts.getTextOfIdentifierOrLiteral(sourceNode)); + node.textSourceNode = sourceNode; + return node; + } + function createIdentifier(text, typeArguments) { + var node = createSynthesizedNode(75 /* Identifier */); + node.escapedText = ts.escapeLeadingUnderscores(text); + node.originalKeywordKind = text ? ts.stringToToken(text) : 0 /* Unknown */; + node.autoGenerateFlags = 0 /* None */; + node.autoGenerateId = 0; + if (typeArguments) { + node.typeArguments = createNodeArray(typeArguments); + } + return node; + } + ts.createIdentifier = createIdentifier; + function updateIdentifier(node, typeArguments) { + return node.typeArguments !== typeArguments + ? updateNode(createIdentifier(ts.idText(node), typeArguments), node) + : node; + } + ts.updateIdentifier = updateIdentifier; + var nextAutoGenerateId = 0; + function createTempVariable(recordTempVariable, reservedInNestedScopes) { + var name = createIdentifier(""); + name.autoGenerateFlags = 1 /* Auto */; + name.autoGenerateId = nextAutoGenerateId; + nextAutoGenerateId++; + if (recordTempVariable) { + recordTempVariable(name); + } + if (reservedInNestedScopes) { + name.autoGenerateFlags |= 8 /* ReservedInNestedScopes */; + } + return name; + } + ts.createTempVariable = createTempVariable; + /** Create a unique temporary variable for use in a loop. */ + function createLoopVariable() { + var name = createIdentifier(""); + name.autoGenerateFlags = 2 /* Loop */; + name.autoGenerateId = nextAutoGenerateId; + nextAutoGenerateId++; + return name; + } + ts.createLoopVariable = createLoopVariable; + /** Create a unique name based on the supplied text. */ + function createUniqueName(text) { + var name = createIdentifier(text); + name.autoGenerateFlags = 3 /* Unique */; + name.autoGenerateId = nextAutoGenerateId; + nextAutoGenerateId++; + return name; + } + ts.createUniqueName = createUniqueName; + function createOptimisticUniqueName(text) { + var name = createIdentifier(text); + name.autoGenerateFlags = 3 /* Unique */ | 16 /* Optimistic */; + name.autoGenerateId = nextAutoGenerateId; + nextAutoGenerateId++; + return name; + } + ts.createOptimisticUniqueName = createOptimisticUniqueName; + /** Create a unique name based on the supplied text. This does not consider names injected by the transformer. */ + function createFileLevelUniqueName(text) { + var name = createOptimisticUniqueName(text); + name.autoGenerateFlags |= 32 /* FileLevel */; + return name; + } + ts.createFileLevelUniqueName = createFileLevelUniqueName; + function getGeneratedNameForNode(node, flags) { + var name = createIdentifier(node && ts.isIdentifier(node) ? ts.idText(node) : ""); + name.autoGenerateFlags = 4 /* Node */ | flags; + name.autoGenerateId = nextAutoGenerateId; + name.original = node; + nextAutoGenerateId++; + return name; + } + ts.getGeneratedNameForNode = getGeneratedNameForNode; + // Private Identifiers + function createPrivateIdentifier(text) { + if (text[0] !== "#") { + ts.Debug.fail("First character of private identifier must be #: " + text); + } + var node = createSynthesizedNode(76 /* PrivateIdentifier */); + node.escapedText = ts.escapeLeadingUnderscores(text); + return node; + } + ts.createPrivateIdentifier = createPrivateIdentifier; + // Punctuation + function createToken(token) { + return createSynthesizedNode(token); + } + ts.createToken = createToken; + // Reserved words + function createSuper() { + return createSynthesizedNode(102 /* SuperKeyword */); + } + ts.createSuper = createSuper; + function createThis() { + return createSynthesizedNode(104 /* ThisKeyword */); + } + ts.createThis = createThis; + function createNull() { + return createSynthesizedNode(100 /* NullKeyword */); + } + ts.createNull = createNull; + function createTrue() { + return createSynthesizedNode(106 /* TrueKeyword */); + } + ts.createTrue = createTrue; + function createFalse() { + return createSynthesizedNode(91 /* FalseKeyword */); + } + ts.createFalse = createFalse; + // Modifiers + function createModifier(kind) { + return createToken(kind); + } + ts.createModifier = createModifier; + function createModifiersFromModifierFlags(flags) { + var result = []; + if (flags & 1 /* Export */) { + result.push(createModifier(89 /* ExportKeyword */)); + } + if (flags & 2 /* Ambient */) { + result.push(createModifier(130 /* DeclareKeyword */)); + } + if (flags & 512 /* Default */) { + result.push(createModifier(84 /* DefaultKeyword */)); + } + if (flags & 2048 /* Const */) { + result.push(createModifier(81 /* ConstKeyword */)); + } + if (flags & 4 /* Public */) { + result.push(createModifier(119 /* PublicKeyword */)); + } + if (flags & 8 /* Private */) { + result.push(createModifier(117 /* PrivateKeyword */)); + } + if (flags & 16 /* Protected */) { + result.push(createModifier(118 /* ProtectedKeyword */)); + } + if (flags & 128 /* Abstract */) { + result.push(createModifier(122 /* AbstractKeyword */)); + } + if (flags & 32 /* Static */) { + result.push(createModifier(120 /* StaticKeyword */)); + } + if (flags & 64 /* Readonly */) { + result.push(createModifier(138 /* ReadonlyKeyword */)); + } + if (flags & 256 /* Async */) { + result.push(createModifier(126 /* AsyncKeyword */)); + } + return result; + } + ts.createModifiersFromModifierFlags = createModifiersFromModifierFlags; + // Names + function createQualifiedName(left, right) { + var node = createSynthesizedNode(153 /* QualifiedName */); + node.left = left; + node.right = asName(right); + return node; + } + ts.createQualifiedName = createQualifiedName; + function updateQualifiedName(node, left, right) { + return node.left !== left + || node.right !== right + ? updateNode(createQualifiedName(left, right), node) + : node; + } + ts.updateQualifiedName = updateQualifiedName; + function parenthesizeForComputedName(expression) { + return ts.isCommaSequence(expression) + ? createParen(expression) + : expression; + } + function createComputedPropertyName(expression) { + var node = createSynthesizedNode(154 /* ComputedPropertyName */); + node.expression = parenthesizeForComputedName(expression); + return node; + } + ts.createComputedPropertyName = createComputedPropertyName; + function updateComputedPropertyName(node, expression) { + return node.expression !== expression + ? updateNode(createComputedPropertyName(expression), node) + : node; + } + ts.updateComputedPropertyName = updateComputedPropertyName; + // Signature elements + function createTypeParameterDeclaration(name, constraint, defaultType) { + var node = createSynthesizedNode(155 /* TypeParameter */); + node.name = asName(name); + node.constraint = constraint; + node.default = defaultType; + return node; + } + ts.createTypeParameterDeclaration = createTypeParameterDeclaration; + function updateTypeParameterDeclaration(node, name, constraint, defaultType) { + return node.name !== name + || node.constraint !== constraint + || node.default !== defaultType + ? updateNode(createTypeParameterDeclaration(name, constraint, defaultType), node) + : node; + } + ts.updateTypeParameterDeclaration = updateTypeParameterDeclaration; + function createParameter(decorators, modifiers, dotDotDotToken, name, questionToken, type, initializer) { + var node = createSynthesizedNode(156 /* Parameter */); + node.decorators = asNodeArray(decorators); + node.modifiers = asNodeArray(modifiers); + node.dotDotDotToken = dotDotDotToken; + node.name = asName(name); + node.questionToken = questionToken; + node.type = type; + node.initializer = initializer ? ts.parenthesizeExpressionForList(initializer) : undefined; + return node; + } + ts.createParameter = createParameter; + function updateParameter(node, decorators, modifiers, dotDotDotToken, name, questionToken, type, initializer) { + return node.decorators !== decorators + || node.modifiers !== modifiers + || node.dotDotDotToken !== dotDotDotToken + || node.name !== name + || node.questionToken !== questionToken + || node.type !== type + || node.initializer !== initializer + ? updateNode(createParameter(decorators, modifiers, dotDotDotToken, name, questionToken, type, initializer), node) + : node; + } + ts.updateParameter = updateParameter; + function createDecorator(expression) { + var node = createSynthesizedNode(157 /* Decorator */); + node.expression = ts.parenthesizeForAccess(expression); + return node; + } + ts.createDecorator = createDecorator; + function updateDecorator(node, expression) { + return node.expression !== expression + ? updateNode(createDecorator(expression), node) + : node; + } + ts.updateDecorator = updateDecorator; + // Type Elements + function createPropertySignature(modifiers, name, questionToken, type, initializer) { + var node = createSynthesizedNode(158 /* PropertySignature */); + node.modifiers = asNodeArray(modifiers); + node.name = asName(name); + node.questionToken = questionToken; + node.type = type; + node.initializer = initializer; + return node; + } + ts.createPropertySignature = createPropertySignature; + function updatePropertySignature(node, modifiers, name, questionToken, type, initializer) { + return node.modifiers !== modifiers + || node.name !== name + || node.questionToken !== questionToken + || node.type !== type + || node.initializer !== initializer + ? updateNode(createPropertySignature(modifiers, name, questionToken, type, initializer), node) + : node; + } + ts.updatePropertySignature = updatePropertySignature; + function createProperty(decorators, modifiers, name, questionOrExclamationToken, type, initializer) { + var node = createSynthesizedNode(159 /* PropertyDeclaration */); + node.decorators = asNodeArray(decorators); + node.modifiers = asNodeArray(modifiers); + node.name = asName(name); + node.questionToken = questionOrExclamationToken !== undefined && questionOrExclamationToken.kind === 57 /* QuestionToken */ ? questionOrExclamationToken : undefined; + node.exclamationToken = questionOrExclamationToken !== undefined && questionOrExclamationToken.kind === 53 /* ExclamationToken */ ? questionOrExclamationToken : undefined; + node.type = type; + node.initializer = initializer; + return node; + } + ts.createProperty = createProperty; + function updateProperty(node, decorators, modifiers, name, questionOrExclamationToken, type, initializer) { + return node.decorators !== decorators + || node.modifiers !== modifiers + || node.name !== name + || node.questionToken !== (questionOrExclamationToken !== undefined && questionOrExclamationToken.kind === 57 /* QuestionToken */ ? questionOrExclamationToken : undefined) + || node.exclamationToken !== (questionOrExclamationToken !== undefined && questionOrExclamationToken.kind === 53 /* ExclamationToken */ ? questionOrExclamationToken : undefined) + || node.type !== type + || node.initializer !== initializer + ? updateNode(createProperty(decorators, modifiers, name, questionOrExclamationToken, type, initializer), node) + : node; + } + ts.updateProperty = updateProperty; + function createMethodSignature(typeParameters, parameters, type, name, questionToken) { + var node = createSignatureDeclaration(160 /* MethodSignature */, typeParameters, parameters, type); + node.name = asName(name); + node.questionToken = questionToken; + return node; + } + ts.createMethodSignature = createMethodSignature; + function updateMethodSignature(node, typeParameters, parameters, type, name, questionToken) { + return node.typeParameters !== typeParameters + || node.parameters !== parameters + || node.type !== type + || node.name !== name + || node.questionToken !== questionToken + ? updateNode(createMethodSignature(typeParameters, parameters, type, name, questionToken), node) + : node; + } + ts.updateMethodSignature = updateMethodSignature; + function createMethod(decorators, modifiers, asteriskToken, name, questionToken, typeParameters, parameters, type, body) { + var node = createSynthesizedNode(161 /* MethodDeclaration */); + node.decorators = asNodeArray(decorators); + node.modifiers = asNodeArray(modifiers); + node.asteriskToken = asteriskToken; + node.name = asName(name); + node.questionToken = questionToken; + node.typeParameters = asNodeArray(typeParameters); + node.parameters = createNodeArray(parameters); + node.type = type; + node.body = body; + return node; + } + ts.createMethod = createMethod; + function createMethodCall(object, methodName, argumentsList) { + return createCall(createPropertyAccess(object, asName(methodName)), + /*typeArguments*/ undefined, argumentsList); + } + function createGlobalMethodCall(globalObjectName, methodName, argumentsList) { + return createMethodCall(createIdentifier(globalObjectName), methodName, argumentsList); + } + /* @internal */ + function createObjectDefinePropertyCall(target, propertyName, attributes) { + return createGlobalMethodCall("Object", "defineProperty", [target, asExpression(propertyName), attributes]); + } + ts.createObjectDefinePropertyCall = createObjectDefinePropertyCall; + function tryAddPropertyAssignment(properties, propertyName, expression) { + if (expression) { + properties.push(createPropertyAssignment(propertyName, expression)); + return true; + } + return false; + } + /* @internal */ + function createPropertyDescriptor(attributes, singleLine) { + var properties = []; + tryAddPropertyAssignment(properties, "enumerable", asExpression(attributes.enumerable)); + tryAddPropertyAssignment(properties, "configurable", asExpression(attributes.configurable)); + var isData = tryAddPropertyAssignment(properties, "writable", asExpression(attributes.writable)); + isData = tryAddPropertyAssignment(properties, "value", attributes.value) || isData; + var isAccessor = tryAddPropertyAssignment(properties, "get", attributes.get); + isAccessor = tryAddPropertyAssignment(properties, "set", attributes.set) || isAccessor; + ts.Debug.assert(!(isData && isAccessor), "A PropertyDescriptor may not be both an accessor descriptor and a data descriptor."); + return createObjectLiteral(properties, !singleLine); + } + ts.createPropertyDescriptor = createPropertyDescriptor; + function updateMethod(node, decorators, modifiers, asteriskToken, name, questionToken, typeParameters, parameters, type, body) { + return node.decorators !== decorators + || node.modifiers !== modifiers + || node.asteriskToken !== asteriskToken + || node.name !== name + || node.questionToken !== questionToken + || node.typeParameters !== typeParameters + || node.parameters !== parameters + || node.type !== type + || node.body !== body + ? updateNode(createMethod(decorators, modifiers, asteriskToken, name, questionToken, typeParameters, parameters, type, body), node) + : node; + } + ts.updateMethod = updateMethod; + function createConstructor(decorators, modifiers, parameters, body) { + var node = createSynthesizedNode(162 /* Constructor */); + node.decorators = asNodeArray(decorators); + node.modifiers = asNodeArray(modifiers); + node.typeParameters = undefined; + node.parameters = createNodeArray(parameters); + node.type = undefined; + node.body = body; + return node; + } + ts.createConstructor = createConstructor; + function updateConstructor(node, decorators, modifiers, parameters, body) { + return node.decorators !== decorators + || node.modifiers !== modifiers + || node.parameters !== parameters + || node.body !== body + ? updateNode(createConstructor(decorators, modifiers, parameters, body), node) + : node; + } + ts.updateConstructor = updateConstructor; + function createGetAccessor(decorators, modifiers, name, parameters, type, body) { + var node = createSynthesizedNode(163 /* GetAccessor */); + node.decorators = asNodeArray(decorators); + node.modifiers = asNodeArray(modifiers); + node.name = asName(name); + node.typeParameters = undefined; + node.parameters = createNodeArray(parameters); + node.type = type; + node.body = body; + return node; + } + ts.createGetAccessor = createGetAccessor; + function updateGetAccessor(node, decorators, modifiers, name, parameters, type, body) { + return node.decorators !== decorators + || node.modifiers !== modifiers + || node.name !== name + || node.parameters !== parameters + || node.type !== type + || node.body !== body + ? updateNode(createGetAccessor(decorators, modifiers, name, parameters, type, body), node) + : node; + } + ts.updateGetAccessor = updateGetAccessor; + function createSetAccessor(decorators, modifiers, name, parameters, body) { + var node = createSynthesizedNode(164 /* SetAccessor */); + node.decorators = asNodeArray(decorators); + node.modifiers = asNodeArray(modifiers); + node.name = asName(name); + node.typeParameters = undefined; + node.parameters = createNodeArray(parameters); + node.body = body; + return node; + } + ts.createSetAccessor = createSetAccessor; + function updateSetAccessor(node, decorators, modifiers, name, parameters, body) { + return node.decorators !== decorators + || node.modifiers !== modifiers + || node.name !== name + || node.parameters !== parameters + || node.body !== body + ? updateNode(createSetAccessor(decorators, modifiers, name, parameters, body), node) + : node; + } + ts.updateSetAccessor = updateSetAccessor; + function createCallSignature(typeParameters, parameters, type) { + return createSignatureDeclaration(165 /* CallSignature */, typeParameters, parameters, type); + } + ts.createCallSignature = createCallSignature; + function updateCallSignature(node, typeParameters, parameters, type) { + return updateSignatureDeclaration(node, typeParameters, parameters, type); + } + ts.updateCallSignature = updateCallSignature; + function createConstructSignature(typeParameters, parameters, type) { + return createSignatureDeclaration(166 /* ConstructSignature */, typeParameters, parameters, type); + } + ts.createConstructSignature = createConstructSignature; + function updateConstructSignature(node, typeParameters, parameters, type) { + return updateSignatureDeclaration(node, typeParameters, parameters, type); + } + ts.updateConstructSignature = updateConstructSignature; + function createIndexSignature(decorators, modifiers, parameters, type) { + var node = createSynthesizedNode(167 /* IndexSignature */); + node.decorators = asNodeArray(decorators); + node.modifiers = asNodeArray(modifiers); + node.parameters = createNodeArray(parameters); + node.type = type; + return node; + } + ts.createIndexSignature = createIndexSignature; + function updateIndexSignature(node, decorators, modifiers, parameters, type) { + return node.parameters !== parameters + || node.type !== type + || node.decorators !== decorators + || node.modifiers !== modifiers + ? updateNode(createIndexSignature(decorators, modifiers, parameters, type), node) + : node; + } + ts.updateIndexSignature = updateIndexSignature; + /* @internal */ + function createSignatureDeclaration(kind, typeParameters, parameters, type, typeArguments) { + var node = createSynthesizedNode(kind); + node.typeParameters = asNodeArray(typeParameters); + node.parameters = asNodeArray(parameters); + node.type = type; + node.typeArguments = asNodeArray(typeArguments); + return node; + } + ts.createSignatureDeclaration = createSignatureDeclaration; + function updateSignatureDeclaration(node, typeParameters, parameters, type) { + return node.typeParameters !== typeParameters + || node.parameters !== parameters + || node.type !== type + ? updateNode(createSignatureDeclaration(node.kind, typeParameters, parameters, type), node) + : node; + } + // Types + function createKeywordTypeNode(kind) { + return createSynthesizedNode(kind); + } + ts.createKeywordTypeNode = createKeywordTypeNode; + function createTypePredicateNode(parameterName, type) { + return createTypePredicateNodeWithModifier(/*assertsModifier*/ undefined, parameterName, type); + } + ts.createTypePredicateNode = createTypePredicateNode; + function createTypePredicateNodeWithModifier(assertsModifier, parameterName, type) { + var node = createSynthesizedNode(168 /* TypePredicate */); + node.assertsModifier = assertsModifier; + node.parameterName = asName(parameterName); + node.type = type; + return node; + } + ts.createTypePredicateNodeWithModifier = createTypePredicateNodeWithModifier; + function updateTypePredicateNode(node, parameterName, type) { + return updateTypePredicateNodeWithModifier(node, node.assertsModifier, parameterName, type); + } + ts.updateTypePredicateNode = updateTypePredicateNode; + function updateTypePredicateNodeWithModifier(node, assertsModifier, parameterName, type) { + return node.assertsModifier !== assertsModifier + || node.parameterName !== parameterName + || node.type !== type + ? updateNode(createTypePredicateNodeWithModifier(assertsModifier, parameterName, type), node) + : node; + } + ts.updateTypePredicateNodeWithModifier = updateTypePredicateNodeWithModifier; + function createTypeReferenceNode(typeName, typeArguments) { + var node = createSynthesizedNode(169 /* TypeReference */); + node.typeName = asName(typeName); + node.typeArguments = typeArguments && ts.parenthesizeTypeParameters(typeArguments); + return node; + } + ts.createTypeReferenceNode = createTypeReferenceNode; + function updateTypeReferenceNode(node, typeName, typeArguments) { + return node.typeName !== typeName + || node.typeArguments !== typeArguments + ? updateNode(createTypeReferenceNode(typeName, typeArguments), node) + : node; + } + ts.updateTypeReferenceNode = updateTypeReferenceNode; + function createFunctionTypeNode(typeParameters, parameters, type) { + return createSignatureDeclaration(170 /* FunctionType */, typeParameters, parameters, type); + } + ts.createFunctionTypeNode = createFunctionTypeNode; + function updateFunctionTypeNode(node, typeParameters, parameters, type) { + return updateSignatureDeclaration(node, typeParameters, parameters, type); + } + ts.updateFunctionTypeNode = updateFunctionTypeNode; + function createConstructorTypeNode(typeParameters, parameters, type) { + return createSignatureDeclaration(171 /* ConstructorType */, typeParameters, parameters, type); + } + ts.createConstructorTypeNode = createConstructorTypeNode; + function updateConstructorTypeNode(node, typeParameters, parameters, type) { + return updateSignatureDeclaration(node, typeParameters, parameters, type); + } + ts.updateConstructorTypeNode = updateConstructorTypeNode; + function createTypeQueryNode(exprName) { + var node = createSynthesizedNode(172 /* TypeQuery */); + node.exprName = exprName; + return node; + } + ts.createTypeQueryNode = createTypeQueryNode; + function updateTypeQueryNode(node, exprName) { + return node.exprName !== exprName + ? updateNode(createTypeQueryNode(exprName), node) + : node; + } + ts.updateTypeQueryNode = updateTypeQueryNode; + function createTypeLiteralNode(members) { + var node = createSynthesizedNode(173 /* TypeLiteral */); + node.members = createNodeArray(members); + return node; + } + ts.createTypeLiteralNode = createTypeLiteralNode; + function updateTypeLiteralNode(node, members) { + return node.members !== members + ? updateNode(createTypeLiteralNode(members), node) + : node; + } + ts.updateTypeLiteralNode = updateTypeLiteralNode; + function createArrayTypeNode(elementType) { + var node = createSynthesizedNode(174 /* ArrayType */); + node.elementType = ts.parenthesizeArrayTypeMember(elementType); + return node; + } + ts.createArrayTypeNode = createArrayTypeNode; + function updateArrayTypeNode(node, elementType) { + return node.elementType !== elementType + ? updateNode(createArrayTypeNode(elementType), node) + : node; + } + ts.updateArrayTypeNode = updateArrayTypeNode; + function createTupleTypeNode(elementTypes) { + var node = createSynthesizedNode(175 /* TupleType */); + node.elementTypes = createNodeArray(elementTypes); + return node; + } + ts.createTupleTypeNode = createTupleTypeNode; + function updateTupleTypeNode(node, elementTypes) { + return node.elementTypes !== elementTypes + ? updateNode(createTupleTypeNode(elementTypes), node) + : node; + } + ts.updateTupleTypeNode = updateTupleTypeNode; + function createOptionalTypeNode(type) { + var node = createSynthesizedNode(176 /* OptionalType */); + node.type = ts.parenthesizeArrayTypeMember(type); + return node; + } + ts.createOptionalTypeNode = createOptionalTypeNode; + function updateOptionalTypeNode(node, type) { + return node.type !== type + ? updateNode(createOptionalTypeNode(type), node) + : node; + } + ts.updateOptionalTypeNode = updateOptionalTypeNode; + function createRestTypeNode(type) { + var node = createSynthesizedNode(177 /* RestType */); + node.type = type; + return node; + } + ts.createRestTypeNode = createRestTypeNode; + function updateRestTypeNode(node, type) { + return node.type !== type + ? updateNode(createRestTypeNode(type), node) + : node; + } + ts.updateRestTypeNode = updateRestTypeNode; + function createUnionTypeNode(types) { + return createUnionOrIntersectionTypeNode(178 /* UnionType */, types); + } + ts.createUnionTypeNode = createUnionTypeNode; + function updateUnionTypeNode(node, types) { + return updateUnionOrIntersectionTypeNode(node, types); + } + ts.updateUnionTypeNode = updateUnionTypeNode; + function createIntersectionTypeNode(types) { + return createUnionOrIntersectionTypeNode(179 /* IntersectionType */, types); + } + ts.createIntersectionTypeNode = createIntersectionTypeNode; + function updateIntersectionTypeNode(node, types) { + return updateUnionOrIntersectionTypeNode(node, types); + } + ts.updateIntersectionTypeNode = updateIntersectionTypeNode; + function createUnionOrIntersectionTypeNode(kind, types) { + var node = createSynthesizedNode(kind); + node.types = ts.parenthesizeElementTypeMembers(types); + return node; + } + ts.createUnionOrIntersectionTypeNode = createUnionOrIntersectionTypeNode; + function updateUnionOrIntersectionTypeNode(node, types) { + return node.types !== types + ? updateNode(createUnionOrIntersectionTypeNode(node.kind, types), node) + : node; + } + function createConditionalTypeNode(checkType, extendsType, trueType, falseType) { + var node = createSynthesizedNode(180 /* ConditionalType */); + node.checkType = ts.parenthesizeConditionalTypeMember(checkType); + node.extendsType = ts.parenthesizeConditionalTypeMember(extendsType); + node.trueType = trueType; + node.falseType = falseType; + return node; + } + ts.createConditionalTypeNode = createConditionalTypeNode; + function updateConditionalTypeNode(node, checkType, extendsType, trueType, falseType) { + return node.checkType !== checkType + || node.extendsType !== extendsType + || node.trueType !== trueType + || node.falseType !== falseType + ? updateNode(createConditionalTypeNode(checkType, extendsType, trueType, falseType), node) + : node; + } + ts.updateConditionalTypeNode = updateConditionalTypeNode; + function createInferTypeNode(typeParameter) { + var node = createSynthesizedNode(181 /* InferType */); + node.typeParameter = typeParameter; + return node; + } + ts.createInferTypeNode = createInferTypeNode; + function updateInferTypeNode(node, typeParameter) { + return node.typeParameter !== typeParameter + ? updateNode(createInferTypeNode(typeParameter), node) + : node; + } + ts.updateInferTypeNode = updateInferTypeNode; + function createImportTypeNode(argument, qualifier, typeArguments, isTypeOf) { + var node = createSynthesizedNode(188 /* ImportType */); + node.argument = argument; + node.qualifier = qualifier; + node.typeArguments = ts.parenthesizeTypeParameters(typeArguments); + node.isTypeOf = isTypeOf; + return node; + } + ts.createImportTypeNode = createImportTypeNode; + function updateImportTypeNode(node, argument, qualifier, typeArguments, isTypeOf) { + return node.argument !== argument + || node.qualifier !== qualifier + || node.typeArguments !== typeArguments + || node.isTypeOf !== isTypeOf + ? updateNode(createImportTypeNode(argument, qualifier, typeArguments, isTypeOf), node) + : node; + } + ts.updateImportTypeNode = updateImportTypeNode; + function createParenthesizedType(type) { + var node = createSynthesizedNode(182 /* ParenthesizedType */); + node.type = type; + return node; + } + ts.createParenthesizedType = createParenthesizedType; + function updateParenthesizedType(node, type) { + return node.type !== type + ? updateNode(createParenthesizedType(type), node) + : node; + } + ts.updateParenthesizedType = updateParenthesizedType; + function createThisTypeNode() { + return createSynthesizedNode(183 /* ThisType */); + } + ts.createThisTypeNode = createThisTypeNode; + function createTypeOperatorNode(operatorOrType, type) { + var node = createSynthesizedNode(184 /* TypeOperator */); + node.operator = typeof operatorOrType === "number" ? operatorOrType : 134 /* KeyOfKeyword */; + node.type = ts.parenthesizeElementTypeMember(typeof operatorOrType === "number" ? type : operatorOrType); + return node; + } + ts.createTypeOperatorNode = createTypeOperatorNode; + function updateTypeOperatorNode(node, type) { + return node.type !== type ? updateNode(createTypeOperatorNode(node.operator, type), node) : node; + } + ts.updateTypeOperatorNode = updateTypeOperatorNode; + function createIndexedAccessTypeNode(objectType, indexType) { + var node = createSynthesizedNode(185 /* IndexedAccessType */); + node.objectType = ts.parenthesizeElementTypeMember(objectType); + node.indexType = indexType; + return node; + } + ts.createIndexedAccessTypeNode = createIndexedAccessTypeNode; + function updateIndexedAccessTypeNode(node, objectType, indexType) { + return node.objectType !== objectType + || node.indexType !== indexType + ? updateNode(createIndexedAccessTypeNode(objectType, indexType), node) + : node; + } + ts.updateIndexedAccessTypeNode = updateIndexedAccessTypeNode; + function createMappedTypeNode(readonlyToken, typeParameter, questionToken, type) { + var node = createSynthesizedNode(186 /* MappedType */); + node.readonlyToken = readonlyToken; + node.typeParameter = typeParameter; + node.questionToken = questionToken; + node.type = type; + return node; + } + ts.createMappedTypeNode = createMappedTypeNode; + function updateMappedTypeNode(node, readonlyToken, typeParameter, questionToken, type) { + return node.readonlyToken !== readonlyToken + || node.typeParameter !== typeParameter + || node.questionToken !== questionToken + || node.type !== type + ? updateNode(createMappedTypeNode(readonlyToken, typeParameter, questionToken, type), node) + : node; + } + ts.updateMappedTypeNode = updateMappedTypeNode; + function createLiteralTypeNode(literal) { + var node = createSynthesizedNode(187 /* LiteralType */); + node.literal = literal; + return node; + } + ts.createLiteralTypeNode = createLiteralTypeNode; + function updateLiteralTypeNode(node, literal) { + return node.literal !== literal + ? updateNode(createLiteralTypeNode(literal), node) + : node; + } + ts.updateLiteralTypeNode = updateLiteralTypeNode; + // Binding Patterns + function createObjectBindingPattern(elements) { + var node = createSynthesizedNode(189 /* ObjectBindingPattern */); + node.elements = createNodeArray(elements); + return node; + } + ts.createObjectBindingPattern = createObjectBindingPattern; + function updateObjectBindingPattern(node, elements) { + return node.elements !== elements + ? updateNode(createObjectBindingPattern(elements), node) + : node; + } + ts.updateObjectBindingPattern = updateObjectBindingPattern; + function createArrayBindingPattern(elements) { + var node = createSynthesizedNode(190 /* ArrayBindingPattern */); + node.elements = createNodeArray(elements); + return node; + } + ts.createArrayBindingPattern = createArrayBindingPattern; + function updateArrayBindingPattern(node, elements) { + return node.elements !== elements + ? updateNode(createArrayBindingPattern(elements), node) + : node; + } + ts.updateArrayBindingPattern = updateArrayBindingPattern; + function createBindingElement(dotDotDotToken, propertyName, name, initializer) { + var node = createSynthesizedNode(191 /* BindingElement */); + node.dotDotDotToken = dotDotDotToken; + node.propertyName = asName(propertyName); + node.name = asName(name); + node.initializer = initializer; + return node; + } + ts.createBindingElement = createBindingElement; + function updateBindingElement(node, dotDotDotToken, propertyName, name, initializer) { + return node.propertyName !== propertyName + || node.dotDotDotToken !== dotDotDotToken + || node.name !== name + || node.initializer !== initializer + ? updateNode(createBindingElement(dotDotDotToken, propertyName, name, initializer), node) + : node; + } + ts.updateBindingElement = updateBindingElement; + // Expression + function createArrayLiteral(elements, multiLine) { + var node = createSynthesizedNode(192 /* ArrayLiteralExpression */); + node.elements = ts.parenthesizeListElements(createNodeArray(elements)); + if (multiLine) + node.multiLine = true; + return node; + } + ts.createArrayLiteral = createArrayLiteral; + function updateArrayLiteral(node, elements) { + return node.elements !== elements + ? updateNode(createArrayLiteral(elements, node.multiLine), node) + : node; + } + ts.updateArrayLiteral = updateArrayLiteral; + function createObjectLiteral(properties, multiLine) { + var node = createSynthesizedNode(193 /* ObjectLiteralExpression */); + node.properties = createNodeArray(properties); + if (multiLine) + node.multiLine = true; + return node; + } + ts.createObjectLiteral = createObjectLiteral; + function updateObjectLiteral(node, properties) { + return node.properties !== properties + ? updateNode(createObjectLiteral(properties, node.multiLine), node) + : node; + } + ts.updateObjectLiteral = updateObjectLiteral; + function createPropertyAccess(expression, name) { + var node = createSynthesizedNode(194 /* PropertyAccessExpression */); + node.expression = ts.parenthesizeForAccess(expression); + node.name = asName(name); + setEmitFlags(node, 131072 /* NoIndentation */); + return node; + } + ts.createPropertyAccess = createPropertyAccess; + function updatePropertyAccess(node, expression, name) { + if (ts.isPropertyAccessChain(node)) { + return updatePropertyAccessChain(node, expression, node.questionDotToken, ts.cast(name, ts.isIdentifier)); + } + // Because we are updating existed propertyAccess we want to inherit its emitFlags + // instead of using the default from createPropertyAccess + return node.expression !== expression + || node.name !== name + ? updateNode(setEmitFlags(createPropertyAccess(expression, name), ts.getEmitFlags(node)), node) + : node; + } + ts.updatePropertyAccess = updatePropertyAccess; + function createPropertyAccessChain(expression, questionDotToken, name) { + var node = createSynthesizedNode(194 /* PropertyAccessExpression */); + node.flags |= 32 /* OptionalChain */; + node.expression = ts.parenthesizeForAccess(expression); + node.questionDotToken = questionDotToken; + node.name = asName(name); + setEmitFlags(node, 131072 /* NoIndentation */); + return node; + } + ts.createPropertyAccessChain = createPropertyAccessChain; + function updatePropertyAccessChain(node, expression, questionDotToken, name) { + ts.Debug.assert(!!(node.flags & 32 /* OptionalChain */), "Cannot update a PropertyAccessExpression using updatePropertyAccessChain. Use updatePropertyAccess instead."); + // Because we are updating an existing PropertyAccessChain we want to inherit its emitFlags + // instead of using the default from createPropertyAccess + return node.expression !== expression + || node.questionDotToken !== questionDotToken + || node.name !== name + ? updateNode(setEmitFlags(createPropertyAccessChain(expression, questionDotToken, name), ts.getEmitFlags(node)), node) + : node; + } + ts.updatePropertyAccessChain = updatePropertyAccessChain; + function createElementAccess(expression, index) { + var node = createSynthesizedNode(195 /* ElementAccessExpression */); + node.expression = ts.parenthesizeForAccess(expression); + node.argumentExpression = asExpression(index); + return node; + } + ts.createElementAccess = createElementAccess; + function updateElementAccess(node, expression, argumentExpression) { + if (ts.isOptionalChain(node)) { + return updateElementAccessChain(node, expression, node.questionDotToken, argumentExpression); + } + return node.expression !== expression + || node.argumentExpression !== argumentExpression + ? updateNode(createElementAccess(expression, argumentExpression), node) + : node; + } + ts.updateElementAccess = updateElementAccess; + function createElementAccessChain(expression, questionDotToken, index) { + var node = createSynthesizedNode(195 /* ElementAccessExpression */); + node.flags |= 32 /* OptionalChain */; + node.expression = ts.parenthesizeForAccess(expression); + node.questionDotToken = questionDotToken; + node.argumentExpression = asExpression(index); + return node; + } + ts.createElementAccessChain = createElementAccessChain; + function updateElementAccessChain(node, expression, questionDotToken, argumentExpression) { + ts.Debug.assert(!!(node.flags & 32 /* OptionalChain */), "Cannot update an ElementAccessExpression using updateElementAccessChain. Use updateElementAccess instead."); + return node.expression !== expression + || node.questionDotToken !== questionDotToken + || node.argumentExpression !== argumentExpression + ? updateNode(createElementAccessChain(expression, questionDotToken, argumentExpression), node) + : node; + } + ts.updateElementAccessChain = updateElementAccessChain; + function createCall(expression, typeArguments, argumentsArray) { + var node = createSynthesizedNode(196 /* CallExpression */); + node.expression = ts.parenthesizeForAccess(expression); + node.typeArguments = asNodeArray(typeArguments); + node.arguments = ts.parenthesizeListElements(createNodeArray(argumentsArray)); + return node; + } + ts.createCall = createCall; + function updateCall(node, expression, typeArguments, argumentsArray) { + if (ts.isOptionalChain(node)) { + return updateCallChain(node, expression, node.questionDotToken, typeArguments, argumentsArray); + } + return node.expression !== expression + || node.typeArguments !== typeArguments + || node.arguments !== argumentsArray + ? updateNode(createCall(expression, typeArguments, argumentsArray), node) + : node; + } + ts.updateCall = updateCall; + function createCallChain(expression, questionDotToken, typeArguments, argumentsArray) { + var node = createSynthesizedNode(196 /* CallExpression */); + node.flags |= 32 /* OptionalChain */; + node.expression = ts.parenthesizeForAccess(expression); + node.questionDotToken = questionDotToken; + node.typeArguments = asNodeArray(typeArguments); + node.arguments = ts.parenthesizeListElements(createNodeArray(argumentsArray)); + return node; + } + ts.createCallChain = createCallChain; + function updateCallChain(node, expression, questionDotToken, typeArguments, argumentsArray) { + ts.Debug.assert(!!(node.flags & 32 /* OptionalChain */), "Cannot update a CallExpression using updateCallChain. Use updateCall instead."); + return node.expression !== expression + || node.questionDotToken !== questionDotToken + || node.typeArguments !== typeArguments + || node.arguments !== argumentsArray + ? updateNode(createCallChain(expression, questionDotToken, typeArguments, argumentsArray), node) + : node; + } + ts.updateCallChain = updateCallChain; + function createNew(expression, typeArguments, argumentsArray) { + var node = createSynthesizedNode(197 /* NewExpression */); + node.expression = ts.parenthesizeForNew(expression); + node.typeArguments = asNodeArray(typeArguments); + node.arguments = argumentsArray ? ts.parenthesizeListElements(createNodeArray(argumentsArray)) : undefined; + return node; + } + ts.createNew = createNew; + function updateNew(node, expression, typeArguments, argumentsArray) { + return node.expression !== expression + || node.typeArguments !== typeArguments + || node.arguments !== argumentsArray + ? updateNode(createNew(expression, typeArguments, argumentsArray), node) + : node; + } + ts.updateNew = updateNew; + function createTaggedTemplate(tag, typeArgumentsOrTemplate, template) { + var node = createSynthesizedNode(198 /* TaggedTemplateExpression */); + node.tag = ts.parenthesizeForAccess(tag); + if (template) { + node.typeArguments = asNodeArray(typeArgumentsOrTemplate); + node.template = template; + } + else { + node.typeArguments = undefined; + node.template = typeArgumentsOrTemplate; + } + return node; + } + ts.createTaggedTemplate = createTaggedTemplate; + function updateTaggedTemplate(node, tag, typeArgumentsOrTemplate, template) { + return node.tag !== tag + || (template + ? node.typeArguments !== typeArgumentsOrTemplate || node.template !== template + : node.typeArguments !== undefined || node.template !== typeArgumentsOrTemplate) + ? updateNode(createTaggedTemplate(tag, typeArgumentsOrTemplate, template), node) + : node; + } + ts.updateTaggedTemplate = updateTaggedTemplate; + function createTypeAssertion(type, expression) { + var node = createSynthesizedNode(199 /* TypeAssertionExpression */); + node.type = type; + node.expression = ts.parenthesizePrefixOperand(expression); + return node; + } + ts.createTypeAssertion = createTypeAssertion; + function updateTypeAssertion(node, type, expression) { + return node.type !== type + || node.expression !== expression + ? updateNode(createTypeAssertion(type, expression), node) + : node; + } + ts.updateTypeAssertion = updateTypeAssertion; + function createParen(expression) { + var node = createSynthesizedNode(200 /* ParenthesizedExpression */); + node.expression = expression; + return node; + } + ts.createParen = createParen; + function updateParen(node, expression) { + return node.expression !== expression + ? updateNode(createParen(expression), node) + : node; + } + ts.updateParen = updateParen; + function createFunctionExpression(modifiers, asteriskToken, name, typeParameters, parameters, type, body) { + var node = createSynthesizedNode(201 /* FunctionExpression */); + node.modifiers = asNodeArray(modifiers); + node.asteriskToken = asteriskToken; + node.name = asName(name); + node.typeParameters = asNodeArray(typeParameters); + node.parameters = createNodeArray(parameters); + node.type = type; + node.body = body; + return node; + } + ts.createFunctionExpression = createFunctionExpression; + function updateFunctionExpression(node, modifiers, asteriskToken, name, typeParameters, parameters, type, body) { + return node.name !== name + || node.modifiers !== modifiers + || node.asteriskToken !== asteriskToken + || node.typeParameters !== typeParameters + || node.parameters !== parameters + || node.type !== type + || node.body !== body + ? updateNode(createFunctionExpression(modifiers, asteriskToken, name, typeParameters, parameters, type, body), node) + : node; + } + ts.updateFunctionExpression = updateFunctionExpression; + function createArrowFunction(modifiers, typeParameters, parameters, type, equalsGreaterThanToken, body) { + var node = createSynthesizedNode(202 /* ArrowFunction */); + node.modifiers = asNodeArray(modifiers); + node.typeParameters = asNodeArray(typeParameters); + node.parameters = createNodeArray(parameters); + node.type = type; + node.equalsGreaterThanToken = equalsGreaterThanToken || createToken(38 /* EqualsGreaterThanToken */); + node.body = ts.parenthesizeConciseBody(body); + return node; + } + ts.createArrowFunction = createArrowFunction; + function updateArrowFunction(node, modifiers, typeParameters, parameters, type, equalsGreaterThanToken, body) { + return node.modifiers !== modifiers + || node.typeParameters !== typeParameters + || node.parameters !== parameters + || node.type !== type + || node.equalsGreaterThanToken !== equalsGreaterThanToken + || node.body !== body + ? updateNode(createArrowFunction(modifiers, typeParameters, parameters, type, equalsGreaterThanToken, body), node) + : node; + } + ts.updateArrowFunction = updateArrowFunction; + function createDelete(expression) { + var node = createSynthesizedNode(203 /* DeleteExpression */); + node.expression = ts.parenthesizePrefixOperand(expression); + return node; + } + ts.createDelete = createDelete; + function updateDelete(node, expression) { + return node.expression !== expression + ? updateNode(createDelete(expression), node) + : node; + } + ts.updateDelete = updateDelete; + function createTypeOf(expression) { + var node = createSynthesizedNode(204 /* TypeOfExpression */); + node.expression = ts.parenthesizePrefixOperand(expression); + return node; + } + ts.createTypeOf = createTypeOf; + function updateTypeOf(node, expression) { + return node.expression !== expression + ? updateNode(createTypeOf(expression), node) + : node; + } + ts.updateTypeOf = updateTypeOf; + function createVoid(expression) { + var node = createSynthesizedNode(205 /* VoidExpression */); + node.expression = ts.parenthesizePrefixOperand(expression); + return node; + } + ts.createVoid = createVoid; + function updateVoid(node, expression) { + return node.expression !== expression + ? updateNode(createVoid(expression), node) + : node; + } + ts.updateVoid = updateVoid; + function createAwait(expression) { + var node = createSynthesizedNode(206 /* AwaitExpression */); + node.expression = ts.parenthesizePrefixOperand(expression); + return node; + } + ts.createAwait = createAwait; + function updateAwait(node, expression) { + return node.expression !== expression + ? updateNode(createAwait(expression), node) + : node; + } + ts.updateAwait = updateAwait; + function createPrefix(operator, operand) { + var node = createSynthesizedNode(207 /* PrefixUnaryExpression */); + node.operator = operator; + node.operand = ts.parenthesizePrefixOperand(operand); + return node; + } + ts.createPrefix = createPrefix; + function updatePrefix(node, operand) { + return node.operand !== operand + ? updateNode(createPrefix(node.operator, operand), node) + : node; + } + ts.updatePrefix = updatePrefix; + function createPostfix(operand, operator) { + var node = createSynthesizedNode(208 /* PostfixUnaryExpression */); + node.operand = ts.parenthesizePostfixOperand(operand); + node.operator = operator; + return node; + } + ts.createPostfix = createPostfix; + function updatePostfix(node, operand) { + return node.operand !== operand + ? updateNode(createPostfix(operand, node.operator), node) + : node; + } + ts.updatePostfix = updatePostfix; + function createBinary(left, operator, right) { + var node = createSynthesizedNode(209 /* BinaryExpression */); + var operatorToken = asToken(operator); + var operatorKind = operatorToken.kind; + node.left = ts.parenthesizeBinaryOperand(operatorKind, left, /*isLeftSideOfBinary*/ true, /*leftOperand*/ undefined); + node.operatorToken = operatorToken; + node.right = ts.parenthesizeBinaryOperand(operatorKind, right, /*isLeftSideOfBinary*/ false, node.left); + return node; + } + ts.createBinary = createBinary; + function updateBinary(node, left, right, operator) { + return node.left !== left + || node.right !== right + ? updateNode(createBinary(left, operator || node.operatorToken, right), node) + : node; + } + ts.updateBinary = updateBinary; + function createConditional(condition, questionTokenOrWhenTrue, whenTrueOrWhenFalse, colonToken, whenFalse) { + var node = createSynthesizedNode(210 /* ConditionalExpression */); + node.condition = ts.parenthesizeForConditionalHead(condition); + node.questionToken = whenFalse ? questionTokenOrWhenTrue : createToken(57 /* QuestionToken */); + node.whenTrue = ts.parenthesizeSubexpressionOfConditionalExpression(whenFalse ? whenTrueOrWhenFalse : questionTokenOrWhenTrue); + node.colonToken = whenFalse ? colonToken : createToken(58 /* ColonToken */); + node.whenFalse = ts.parenthesizeSubexpressionOfConditionalExpression(whenFalse ? whenFalse : whenTrueOrWhenFalse); + return node; + } + ts.createConditional = createConditional; + function updateConditional(node, condition, questionToken, whenTrue, colonToken, whenFalse) { + return node.condition !== condition + || node.questionToken !== questionToken + || node.whenTrue !== whenTrue + || node.colonToken !== colonToken + || node.whenFalse !== whenFalse + ? updateNode(createConditional(condition, questionToken, whenTrue, colonToken, whenFalse), node) + : node; + } + ts.updateConditional = updateConditional; + function createTemplateExpression(head, templateSpans) { + var node = createSynthesizedNode(211 /* TemplateExpression */); + node.head = head; + node.templateSpans = createNodeArray(templateSpans); + return node; + } + ts.createTemplateExpression = createTemplateExpression; + function updateTemplateExpression(node, head, templateSpans) { + return node.head !== head + || node.templateSpans !== templateSpans + ? updateNode(createTemplateExpression(head, templateSpans), node) + : node; + } + ts.updateTemplateExpression = updateTemplateExpression; + var rawTextScanner; + var invalidValueSentinel = {}; + function getCookedText(kind, rawText) { + if (!rawTextScanner) { + rawTextScanner = ts.createScanner(99 /* Latest */, /*skipTrivia*/ false, 0 /* Standard */); + } + switch (kind) { + case 14 /* NoSubstitutionTemplateLiteral */: + rawTextScanner.setText("`" + rawText + "`"); + break; + case 15 /* TemplateHead */: + rawTextScanner.setText("`" + rawText + "${"); + break; + case 16 /* TemplateMiddle */: + rawTextScanner.setText("}" + rawText + "${"); + break; + case 17 /* TemplateTail */: + rawTextScanner.setText("}" + rawText + "`"); + break; + } + var token = rawTextScanner.scan(); + if (token === 23 /* CloseBracketToken */) { + token = rawTextScanner.reScanTemplateToken(/* isTaggedTemplate */ false); + } + if (rawTextScanner.isUnterminated()) { + rawTextScanner.setText(undefined); + return invalidValueSentinel; + } + var tokenValue; + switch (token) { + case 14 /* NoSubstitutionTemplateLiteral */: + case 15 /* TemplateHead */: + case 16 /* TemplateMiddle */: + case 17 /* TemplateTail */: + tokenValue = rawTextScanner.getTokenValue(); + break; + } + if (rawTextScanner.scan() !== 1 /* EndOfFileToken */) { + rawTextScanner.setText(undefined); + return invalidValueSentinel; + } + rawTextScanner.setText(undefined); + return tokenValue; + } + function createTemplateLiteralLikeNode(kind, text, rawText) { + var node = createSynthesizedNode(kind); + node.text = text; + if (rawText === undefined || text === rawText) { + node.rawText = rawText; + } + else { + var cooked = getCookedText(kind, rawText); + if (typeof cooked === "object") { + return ts.Debug.fail("Invalid raw text"); + } + ts.Debug.assert(text === cooked, "Expected argument 'text' to be the normalized (i.e. 'cooked') version of argument 'rawText'."); + node.rawText = rawText; + } + return node; + } + function createTemplateHead(text, rawText) { + var node = createTemplateLiteralLikeNode(15 /* TemplateHead */, text, rawText); + node.text = text; + return node; + } + ts.createTemplateHead = createTemplateHead; + function createTemplateMiddle(text, rawText) { + var node = createTemplateLiteralLikeNode(16 /* TemplateMiddle */, text, rawText); + node.text = text; + return node; + } + ts.createTemplateMiddle = createTemplateMiddle; + function createTemplateTail(text, rawText) { + var node = createTemplateLiteralLikeNode(17 /* TemplateTail */, text, rawText); + node.text = text; + return node; + } + ts.createTemplateTail = createTemplateTail; + function createNoSubstitutionTemplateLiteral(text, rawText) { + var node = createTemplateLiteralLikeNode(14 /* NoSubstitutionTemplateLiteral */, text, rawText); + return node; + } + ts.createNoSubstitutionTemplateLiteral = createNoSubstitutionTemplateLiteral; + function createYield(asteriskTokenOrExpression, expression) { + var asteriskToken = asteriskTokenOrExpression && asteriskTokenOrExpression.kind === 41 /* AsteriskToken */ ? asteriskTokenOrExpression : undefined; + expression = asteriskTokenOrExpression && asteriskTokenOrExpression.kind !== 41 /* AsteriskToken */ ? asteriskTokenOrExpression : expression; + var node = createSynthesizedNode(212 /* YieldExpression */); + node.asteriskToken = asteriskToken; + node.expression = expression && ts.parenthesizeExpressionForList(expression); + return node; + } + ts.createYield = createYield; + function updateYield(node, asteriskToken, expression) { + return node.expression !== expression + || node.asteriskToken !== asteriskToken + ? updateNode(createYield(asteriskToken, expression), node) + : node; + } + ts.updateYield = updateYield; + function createSpread(expression) { + var node = createSynthesizedNode(213 /* SpreadElement */); + node.expression = ts.parenthesizeExpressionForList(expression); + return node; + } + ts.createSpread = createSpread; + function updateSpread(node, expression) { + return node.expression !== expression + ? updateNode(createSpread(expression), node) + : node; + } + ts.updateSpread = updateSpread; + function createClassExpression(modifiers, name, typeParameters, heritageClauses, members) { + var node = createSynthesizedNode(214 /* ClassExpression */); + node.decorators = undefined; + node.modifiers = asNodeArray(modifiers); + node.name = asName(name); + node.typeParameters = asNodeArray(typeParameters); + node.heritageClauses = asNodeArray(heritageClauses); + node.members = createNodeArray(members); + return node; + } + ts.createClassExpression = createClassExpression; + function updateClassExpression(node, modifiers, name, typeParameters, heritageClauses, members) { + return node.modifiers !== modifiers + || node.name !== name + || node.typeParameters !== typeParameters + || node.heritageClauses !== heritageClauses + || node.members !== members + ? updateNode(createClassExpression(modifiers, name, typeParameters, heritageClauses, members), node) + : node; + } + ts.updateClassExpression = updateClassExpression; + function createOmittedExpression() { + return createSynthesizedNode(215 /* OmittedExpression */); + } + ts.createOmittedExpression = createOmittedExpression; + function createExpressionWithTypeArguments(typeArguments, expression) { + var node = createSynthesizedNode(216 /* ExpressionWithTypeArguments */); + node.expression = ts.parenthesizeForAccess(expression); + node.typeArguments = asNodeArray(typeArguments); + return node; + } + ts.createExpressionWithTypeArguments = createExpressionWithTypeArguments; + function updateExpressionWithTypeArguments(node, typeArguments, expression) { + return node.typeArguments !== typeArguments + || node.expression !== expression + ? updateNode(createExpressionWithTypeArguments(typeArguments, expression), node) + : node; + } + ts.updateExpressionWithTypeArguments = updateExpressionWithTypeArguments; + function createAsExpression(expression, type) { + var node = createSynthesizedNode(217 /* AsExpression */); + node.expression = expression; + node.type = type; + return node; + } + ts.createAsExpression = createAsExpression; + function updateAsExpression(node, expression, type) { + return node.expression !== expression + || node.type !== type + ? updateNode(createAsExpression(expression, type), node) + : node; + } + ts.updateAsExpression = updateAsExpression; + function createNonNullExpression(expression) { + var node = createSynthesizedNode(218 /* NonNullExpression */); + node.expression = ts.parenthesizeForAccess(expression); + return node; + } + ts.createNonNullExpression = createNonNullExpression; + function updateNonNullExpression(node, expression) { + if (ts.isNonNullChain(node)) { + return updateNonNullChain(node, expression); + } + return node.expression !== expression + ? updateNode(createNonNullExpression(expression), node) + : node; + } + ts.updateNonNullExpression = updateNonNullExpression; + function createNonNullChain(expression) { + var node = createSynthesizedNode(218 /* NonNullExpression */); + node.flags |= 32 /* OptionalChain */; + node.expression = ts.parenthesizeForAccess(expression); + return node; + } + ts.createNonNullChain = createNonNullChain; + function updateNonNullChain(node, expression) { + ts.Debug.assert(!!(node.flags & 32 /* OptionalChain */), "Cannot update a NonNullExpression using updateNonNullChain. Use updateNonNullExpression instead."); + return node.expression !== expression + ? updateNode(createNonNullChain(expression), node) + : node; + } + ts.updateNonNullChain = updateNonNullChain; + function createMetaProperty(keywordToken, name) { + var node = createSynthesizedNode(219 /* MetaProperty */); + node.keywordToken = keywordToken; + node.name = name; + return node; + } + ts.createMetaProperty = createMetaProperty; + function updateMetaProperty(node, name) { + return node.name !== name + ? updateNode(createMetaProperty(node.keywordToken, name), node) + : node; + } + ts.updateMetaProperty = updateMetaProperty; + // Misc + function createTemplateSpan(expression, literal) { + var node = createSynthesizedNode(221 /* TemplateSpan */); + node.expression = expression; + node.literal = literal; + return node; + } + ts.createTemplateSpan = createTemplateSpan; + function updateTemplateSpan(node, expression, literal) { + return node.expression !== expression + || node.literal !== literal + ? updateNode(createTemplateSpan(expression, literal), node) + : node; + } + ts.updateTemplateSpan = updateTemplateSpan; + function createSemicolonClassElement() { + return createSynthesizedNode(222 /* SemicolonClassElement */); + } + ts.createSemicolonClassElement = createSemicolonClassElement; + // Element + function createBlock(statements, multiLine) { + var block = createSynthesizedNode(223 /* Block */); + block.statements = createNodeArray(statements); + if (multiLine) + block.multiLine = multiLine; + return block; + } + ts.createBlock = createBlock; + function updateBlock(node, statements) { + return node.statements !== statements + ? updateNode(createBlock(statements, node.multiLine), node) + : node; + } + ts.updateBlock = updateBlock; + function createVariableStatement(modifiers, declarationList) { + var node = createSynthesizedNode(225 /* VariableStatement */); + node.decorators = undefined; + node.modifiers = asNodeArray(modifiers); + node.declarationList = ts.isArray(declarationList) ? createVariableDeclarationList(declarationList) : declarationList; + return node; + } + ts.createVariableStatement = createVariableStatement; + function updateVariableStatement(node, modifiers, declarationList) { + return node.modifiers !== modifiers + || node.declarationList !== declarationList + ? updateNode(createVariableStatement(modifiers, declarationList), node) + : node; + } + ts.updateVariableStatement = updateVariableStatement; + function createEmptyStatement() { + return createSynthesizedNode(224 /* EmptyStatement */); + } + ts.createEmptyStatement = createEmptyStatement; + function createExpressionStatement(expression) { + var node = createSynthesizedNode(226 /* ExpressionStatement */); + node.expression = ts.parenthesizeExpressionForExpressionStatement(expression); + return node; + } + ts.createExpressionStatement = createExpressionStatement; + function updateExpressionStatement(node, expression) { + return node.expression !== expression + ? updateNode(createExpressionStatement(expression), node) + : node; + } + ts.updateExpressionStatement = updateExpressionStatement; + /** @deprecated Use `createExpressionStatement` instead. */ + ts.createStatement = createExpressionStatement; + /** @deprecated Use `updateExpressionStatement` instead. */ + ts.updateStatement = updateExpressionStatement; + function createIf(expression, thenStatement, elseStatement) { + var node = createSynthesizedNode(227 /* IfStatement */); + node.expression = expression; + node.thenStatement = asEmbeddedStatement(thenStatement); + node.elseStatement = asEmbeddedStatement(elseStatement); + return node; + } + ts.createIf = createIf; + function updateIf(node, expression, thenStatement, elseStatement) { + return node.expression !== expression + || node.thenStatement !== thenStatement + || node.elseStatement !== elseStatement + ? updateNode(createIf(expression, thenStatement, elseStatement), node) + : node; + } + ts.updateIf = updateIf; + function createDo(statement, expression) { + var node = createSynthesizedNode(228 /* DoStatement */); + node.statement = asEmbeddedStatement(statement); + node.expression = expression; + return node; + } + ts.createDo = createDo; + function updateDo(node, statement, expression) { + return node.statement !== statement + || node.expression !== expression + ? updateNode(createDo(statement, expression), node) + : node; + } + ts.updateDo = updateDo; + function createWhile(expression, statement) { + var node = createSynthesizedNode(229 /* WhileStatement */); + node.expression = expression; + node.statement = asEmbeddedStatement(statement); + return node; + } + ts.createWhile = createWhile; + function updateWhile(node, expression, statement) { + return node.expression !== expression + || node.statement !== statement + ? updateNode(createWhile(expression, statement), node) + : node; + } + ts.updateWhile = updateWhile; + function createFor(initializer, condition, incrementor, statement) { + var node = createSynthesizedNode(230 /* ForStatement */); + node.initializer = initializer; + node.condition = condition; + node.incrementor = incrementor; + node.statement = asEmbeddedStatement(statement); + return node; + } + ts.createFor = createFor; + function updateFor(node, initializer, condition, incrementor, statement) { + return node.initializer !== initializer + || node.condition !== condition + || node.incrementor !== incrementor + || node.statement !== statement + ? updateNode(createFor(initializer, condition, incrementor, statement), node) + : node; + } + ts.updateFor = updateFor; + function createForIn(initializer, expression, statement) { + var node = createSynthesizedNode(231 /* ForInStatement */); + node.initializer = initializer; + node.expression = expression; + node.statement = asEmbeddedStatement(statement); + return node; + } + ts.createForIn = createForIn; + function updateForIn(node, initializer, expression, statement) { + return node.initializer !== initializer + || node.expression !== expression + || node.statement !== statement + ? updateNode(createForIn(initializer, expression, statement), node) + : node; + } + ts.updateForIn = updateForIn; + function createForOf(awaitModifier, initializer, expression, statement) { + var node = createSynthesizedNode(232 /* ForOfStatement */); + node.awaitModifier = awaitModifier; + node.initializer = initializer; + node.expression = ts.isCommaSequence(expression) ? createParen(expression) : expression; + node.statement = asEmbeddedStatement(statement); + return node; + } + ts.createForOf = createForOf; + function updateForOf(node, awaitModifier, initializer, expression, statement) { + return node.awaitModifier !== awaitModifier + || node.initializer !== initializer + || node.expression !== expression + || node.statement !== statement + ? updateNode(createForOf(awaitModifier, initializer, expression, statement), node) + : node; + } + ts.updateForOf = updateForOf; + function createContinue(label) { + var node = createSynthesizedNode(233 /* ContinueStatement */); + node.label = asName(label); + return node; + } + ts.createContinue = createContinue; + function updateContinue(node, label) { + return node.label !== label + ? updateNode(createContinue(label), node) + : node; + } + ts.updateContinue = updateContinue; + function createBreak(label) { + var node = createSynthesizedNode(234 /* BreakStatement */); + node.label = asName(label); + return node; + } + ts.createBreak = createBreak; + function updateBreak(node, label) { + return node.label !== label + ? updateNode(createBreak(label), node) + : node; + } + ts.updateBreak = updateBreak; + function createReturn(expression) { + var node = createSynthesizedNode(235 /* ReturnStatement */); + node.expression = expression; + return node; + } + ts.createReturn = createReturn; + function updateReturn(node, expression) { + return node.expression !== expression + ? updateNode(createReturn(expression), node) + : node; + } + ts.updateReturn = updateReturn; + function createWith(expression, statement) { + var node = createSynthesizedNode(236 /* WithStatement */); + node.expression = expression; + node.statement = asEmbeddedStatement(statement); + return node; + } + ts.createWith = createWith; + function updateWith(node, expression, statement) { + return node.expression !== expression + || node.statement !== statement + ? updateNode(createWith(expression, statement), node) + : node; + } + ts.updateWith = updateWith; + function createSwitch(expression, caseBlock) { + var node = createSynthesizedNode(237 /* SwitchStatement */); + node.expression = ts.parenthesizeExpressionForList(expression); + node.caseBlock = caseBlock; + return node; + } + ts.createSwitch = createSwitch; + function updateSwitch(node, expression, caseBlock) { + return node.expression !== expression + || node.caseBlock !== caseBlock + ? updateNode(createSwitch(expression, caseBlock), node) + : node; + } + ts.updateSwitch = updateSwitch; + function createLabel(label, statement) { + var node = createSynthesizedNode(238 /* LabeledStatement */); + node.label = asName(label); + node.statement = asEmbeddedStatement(statement); + return node; + } + ts.createLabel = createLabel; + function updateLabel(node, label, statement) { + return node.label !== label + || node.statement !== statement + ? updateNode(createLabel(label, statement), node) + : node; + } + ts.updateLabel = updateLabel; + function createThrow(expression) { + var node = createSynthesizedNode(239 /* ThrowStatement */); + node.expression = expression; + return node; + } + ts.createThrow = createThrow; + function updateThrow(node, expression) { + return node.expression !== expression + ? updateNode(createThrow(expression), node) + : node; + } + ts.updateThrow = updateThrow; + function createTry(tryBlock, catchClause, finallyBlock) { + var node = createSynthesizedNode(240 /* TryStatement */); + node.tryBlock = tryBlock; + node.catchClause = catchClause; + node.finallyBlock = finallyBlock; + return node; + } + ts.createTry = createTry; + function updateTry(node, tryBlock, catchClause, finallyBlock) { + return node.tryBlock !== tryBlock + || node.catchClause !== catchClause + || node.finallyBlock !== finallyBlock + ? updateNode(createTry(tryBlock, catchClause, finallyBlock), node) + : node; + } + ts.updateTry = updateTry; + function createDebuggerStatement() { + return createSynthesizedNode(241 /* DebuggerStatement */); + } + ts.createDebuggerStatement = createDebuggerStatement; + function createVariableDeclaration(name, type, initializer) { + /* Internally, one should probably use createTypeScriptVariableDeclaration instead and handle definite assignment assertions */ + var node = createSynthesizedNode(242 /* VariableDeclaration */); + node.name = asName(name); + node.type = type; + node.initializer = initializer !== undefined ? ts.parenthesizeExpressionForList(initializer) : undefined; + return node; + } + ts.createVariableDeclaration = createVariableDeclaration; + function updateVariableDeclaration(node, name, type, initializer) { + /* Internally, one should probably use updateTypeScriptVariableDeclaration instead and handle definite assignment assertions */ + return node.name !== name + || node.type !== type + || node.initializer !== initializer + ? updateNode(createVariableDeclaration(name, type, initializer), node) + : node; + } + ts.updateVariableDeclaration = updateVariableDeclaration; + /* @internal */ + function createTypeScriptVariableDeclaration(name, exclaimationToken, type, initializer) { + var node = createSynthesizedNode(242 /* VariableDeclaration */); + node.name = asName(name); + node.type = type; + node.initializer = initializer !== undefined ? ts.parenthesizeExpressionForList(initializer) : undefined; + node.exclamationToken = exclaimationToken; + return node; + } + ts.createTypeScriptVariableDeclaration = createTypeScriptVariableDeclaration; + /* @internal */ + function updateTypeScriptVariableDeclaration(node, name, exclaimationToken, type, initializer) { + return node.name !== name + || node.type !== type + || node.initializer !== initializer + || node.exclamationToken !== exclaimationToken + ? updateNode(createTypeScriptVariableDeclaration(name, exclaimationToken, type, initializer), node) + : node; + } + ts.updateTypeScriptVariableDeclaration = updateTypeScriptVariableDeclaration; + function createVariableDeclarationList(declarations, flags) { + if (flags === void 0) { flags = 0 /* None */; } + var node = createSynthesizedNode(243 /* VariableDeclarationList */); + node.flags |= flags & 3 /* BlockScoped */; + node.declarations = createNodeArray(declarations); + return node; + } + ts.createVariableDeclarationList = createVariableDeclarationList; + function updateVariableDeclarationList(node, declarations) { + return node.declarations !== declarations + ? updateNode(createVariableDeclarationList(declarations, node.flags), node) + : node; + } + ts.updateVariableDeclarationList = updateVariableDeclarationList; + function createFunctionDeclaration(decorators, modifiers, asteriskToken, name, typeParameters, parameters, type, body) { + var node = createSynthesizedNode(244 /* FunctionDeclaration */); + node.decorators = asNodeArray(decorators); + node.modifiers = asNodeArray(modifiers); + node.asteriskToken = asteriskToken; + node.name = asName(name); + node.typeParameters = asNodeArray(typeParameters); + node.parameters = createNodeArray(parameters); + node.type = type; + node.body = body; + return node; + } + ts.createFunctionDeclaration = createFunctionDeclaration; + function updateFunctionDeclaration(node, decorators, modifiers, asteriskToken, name, typeParameters, parameters, type, body) { + return node.decorators !== decorators + || node.modifiers !== modifiers + || node.asteriskToken !== asteriskToken + || node.name !== name + || node.typeParameters !== typeParameters + || node.parameters !== parameters + || node.type !== type + || node.body !== body + ? updateNode(createFunctionDeclaration(decorators, modifiers, asteriskToken, name, typeParameters, parameters, type, body), node) + : node; + } + ts.updateFunctionDeclaration = updateFunctionDeclaration; + /* @internal */ + function updateFunctionLikeBody(declaration, body) { + switch (declaration.kind) { + case 244 /* FunctionDeclaration */: + return createFunctionDeclaration(declaration.decorators, declaration.modifiers, declaration.asteriskToken, declaration.name, declaration.typeParameters, declaration.parameters, declaration.type, body); + case 161 /* MethodDeclaration */: + return createMethod(declaration.decorators, declaration.modifiers, declaration.asteriskToken, declaration.name, declaration.questionToken, declaration.typeParameters, declaration.parameters, declaration.type, body); + case 163 /* GetAccessor */: + return createGetAccessor(declaration.decorators, declaration.modifiers, declaration.name, declaration.parameters, declaration.type, body); + case 164 /* SetAccessor */: + return createSetAccessor(declaration.decorators, declaration.modifiers, declaration.name, declaration.parameters, body); + case 162 /* Constructor */: + return createConstructor(declaration.decorators, declaration.modifiers, declaration.parameters, body); + case 201 /* FunctionExpression */: + return createFunctionExpression(declaration.modifiers, declaration.asteriskToken, declaration.name, declaration.typeParameters, declaration.parameters, declaration.type, body); + case 202 /* ArrowFunction */: + return createArrowFunction(declaration.modifiers, declaration.typeParameters, declaration.parameters, declaration.type, declaration.equalsGreaterThanToken, body); + } + } + ts.updateFunctionLikeBody = updateFunctionLikeBody; + function createClassDeclaration(decorators, modifiers, name, typeParameters, heritageClauses, members) { + var node = createSynthesizedNode(245 /* ClassDeclaration */); + node.decorators = asNodeArray(decorators); + node.modifiers = asNodeArray(modifiers); + node.name = asName(name); + node.typeParameters = asNodeArray(typeParameters); + node.heritageClauses = asNodeArray(heritageClauses); + node.members = createNodeArray(members); + return node; + } + ts.createClassDeclaration = createClassDeclaration; + function updateClassDeclaration(node, decorators, modifiers, name, typeParameters, heritageClauses, members) { + return node.decorators !== decorators + || node.modifiers !== modifiers + || node.name !== name + || node.typeParameters !== typeParameters + || node.heritageClauses !== heritageClauses + || node.members !== members + ? updateNode(createClassDeclaration(decorators, modifiers, name, typeParameters, heritageClauses, members), node) + : node; + } + ts.updateClassDeclaration = updateClassDeclaration; + function createInterfaceDeclaration(decorators, modifiers, name, typeParameters, heritageClauses, members) { + var node = createSynthesizedNode(246 /* InterfaceDeclaration */); + node.decorators = asNodeArray(decorators); + node.modifiers = asNodeArray(modifiers); + node.name = asName(name); + node.typeParameters = asNodeArray(typeParameters); + node.heritageClauses = asNodeArray(heritageClauses); + node.members = createNodeArray(members); + return node; + } + ts.createInterfaceDeclaration = createInterfaceDeclaration; + function updateInterfaceDeclaration(node, decorators, modifiers, name, typeParameters, heritageClauses, members) { + return node.decorators !== decorators + || node.modifiers !== modifiers + || node.name !== name + || node.typeParameters !== typeParameters + || node.heritageClauses !== heritageClauses + || node.members !== members + ? updateNode(createInterfaceDeclaration(decorators, modifiers, name, typeParameters, heritageClauses, members), node) + : node; + } + ts.updateInterfaceDeclaration = updateInterfaceDeclaration; + function createTypeAliasDeclaration(decorators, modifiers, name, typeParameters, type) { + var node = createSynthesizedNode(247 /* TypeAliasDeclaration */); + node.decorators = asNodeArray(decorators); + node.modifiers = asNodeArray(modifiers); + node.name = asName(name); + node.typeParameters = asNodeArray(typeParameters); + node.type = type; + return node; + } + ts.createTypeAliasDeclaration = createTypeAliasDeclaration; + function updateTypeAliasDeclaration(node, decorators, modifiers, name, typeParameters, type) { + return node.decorators !== decorators + || node.modifiers !== modifiers + || node.name !== name + || node.typeParameters !== typeParameters + || node.type !== type + ? updateNode(createTypeAliasDeclaration(decorators, modifiers, name, typeParameters, type), node) + : node; + } + ts.updateTypeAliasDeclaration = updateTypeAliasDeclaration; + function createEnumDeclaration(decorators, modifiers, name, members) { + var node = createSynthesizedNode(248 /* EnumDeclaration */); + node.decorators = asNodeArray(decorators); + node.modifiers = asNodeArray(modifiers); + node.name = asName(name); + node.members = createNodeArray(members); + return node; + } + ts.createEnumDeclaration = createEnumDeclaration; + function updateEnumDeclaration(node, decorators, modifiers, name, members) { + return node.decorators !== decorators + || node.modifiers !== modifiers + || node.name !== name + || node.members !== members + ? updateNode(createEnumDeclaration(decorators, modifiers, name, members), node) + : node; + } + ts.updateEnumDeclaration = updateEnumDeclaration; + function createModuleDeclaration(decorators, modifiers, name, body, flags) { + if (flags === void 0) { flags = 0 /* None */; } + var node = createSynthesizedNode(249 /* ModuleDeclaration */); + node.flags |= flags & (16 /* Namespace */ | 4 /* NestedNamespace */ | 1024 /* GlobalAugmentation */); + node.decorators = asNodeArray(decorators); + node.modifiers = asNodeArray(modifiers); + node.name = name; + node.body = body; + return node; + } + ts.createModuleDeclaration = createModuleDeclaration; + function updateModuleDeclaration(node, decorators, modifiers, name, body) { + return node.decorators !== decorators + || node.modifiers !== modifiers + || node.name !== name + || node.body !== body + ? updateNode(createModuleDeclaration(decorators, modifiers, name, body, node.flags), node) + : node; + } + ts.updateModuleDeclaration = updateModuleDeclaration; + function createModuleBlock(statements) { + var node = createSynthesizedNode(250 /* ModuleBlock */); + node.statements = createNodeArray(statements); + return node; + } + ts.createModuleBlock = createModuleBlock; + function updateModuleBlock(node, statements) { + return node.statements !== statements + ? updateNode(createModuleBlock(statements), node) + : node; + } + ts.updateModuleBlock = updateModuleBlock; + function createCaseBlock(clauses) { + var node = createSynthesizedNode(251 /* CaseBlock */); + node.clauses = createNodeArray(clauses); + return node; + } + ts.createCaseBlock = createCaseBlock; + function updateCaseBlock(node, clauses) { + return node.clauses !== clauses + ? updateNode(createCaseBlock(clauses), node) + : node; + } + ts.updateCaseBlock = updateCaseBlock; + function createNamespaceExportDeclaration(name) { + var node = createSynthesizedNode(252 /* NamespaceExportDeclaration */); + node.name = asName(name); + return node; + } + ts.createNamespaceExportDeclaration = createNamespaceExportDeclaration; + function updateNamespaceExportDeclaration(node, name) { + return node.name !== name + ? updateNode(createNamespaceExportDeclaration(name), node) + : node; + } + ts.updateNamespaceExportDeclaration = updateNamespaceExportDeclaration; + function createImportEqualsDeclaration(decorators, modifiers, name, moduleReference) { + var node = createSynthesizedNode(253 /* ImportEqualsDeclaration */); + node.decorators = asNodeArray(decorators); + node.modifiers = asNodeArray(modifiers); + node.name = asName(name); + node.moduleReference = moduleReference; + return node; + } + ts.createImportEqualsDeclaration = createImportEqualsDeclaration; + function updateImportEqualsDeclaration(node, decorators, modifiers, name, moduleReference) { + return node.decorators !== decorators + || node.modifiers !== modifiers + || node.name !== name + || node.moduleReference !== moduleReference + ? updateNode(createImportEqualsDeclaration(decorators, modifiers, name, moduleReference), node) + : node; + } + ts.updateImportEqualsDeclaration = updateImportEqualsDeclaration; + function createImportDeclaration(decorators, modifiers, importClause, moduleSpecifier) { + var node = createSynthesizedNode(254 /* ImportDeclaration */); + node.decorators = asNodeArray(decorators); + node.modifiers = asNodeArray(modifiers); + node.importClause = importClause; + node.moduleSpecifier = moduleSpecifier; + return node; + } + ts.createImportDeclaration = createImportDeclaration; + function updateImportDeclaration(node, decorators, modifiers, importClause, moduleSpecifier) { + return node.decorators !== decorators + || node.modifiers !== modifiers + || node.importClause !== importClause + || node.moduleSpecifier !== moduleSpecifier + ? updateNode(createImportDeclaration(decorators, modifiers, importClause, moduleSpecifier), node) + : node; + } + ts.updateImportDeclaration = updateImportDeclaration; + function createImportClause(name, namedBindings, isTypeOnly) { + if (isTypeOnly === void 0) { isTypeOnly = false; } + var node = createSynthesizedNode(255 /* ImportClause */); + node.name = name; + node.namedBindings = namedBindings; + node.isTypeOnly = isTypeOnly; + return node; + } + ts.createImportClause = createImportClause; + function updateImportClause(node, name, namedBindings, isTypeOnly) { + return node.name !== name + || node.namedBindings !== namedBindings + || node.isTypeOnly !== isTypeOnly + ? updateNode(createImportClause(name, namedBindings, isTypeOnly), node) + : node; + } + ts.updateImportClause = updateImportClause; + function createNamespaceImport(name) { + var node = createSynthesizedNode(256 /* NamespaceImport */); + node.name = name; + return node; + } + ts.createNamespaceImport = createNamespaceImport; + function createNamespaceExport(name) { + var node = createSynthesizedNode(262 /* NamespaceExport */); + node.name = name; + return node; + } + ts.createNamespaceExport = createNamespaceExport; + function updateNamespaceImport(node, name) { + return node.name !== name + ? updateNode(createNamespaceImport(name), node) + : node; + } + ts.updateNamespaceImport = updateNamespaceImport; + function updateNamespaceExport(node, name) { + return node.name !== name + ? updateNode(createNamespaceExport(name), node) + : node; + } + ts.updateNamespaceExport = updateNamespaceExport; + function createNamedImports(elements) { + var node = createSynthesizedNode(257 /* NamedImports */); + node.elements = createNodeArray(elements); + return node; + } + ts.createNamedImports = createNamedImports; + function updateNamedImports(node, elements) { + return node.elements !== elements + ? updateNode(createNamedImports(elements), node) + : node; + } + ts.updateNamedImports = updateNamedImports; + function createImportSpecifier(propertyName, name) { + var node = createSynthesizedNode(258 /* ImportSpecifier */); + node.propertyName = propertyName; + node.name = name; + return node; + } + ts.createImportSpecifier = createImportSpecifier; + function updateImportSpecifier(node, propertyName, name) { + return node.propertyName !== propertyName + || node.name !== name + ? updateNode(createImportSpecifier(propertyName, name), node) + : node; + } + ts.updateImportSpecifier = updateImportSpecifier; + function createExportAssignment(decorators, modifiers, isExportEquals, expression) { + var node = createSynthesizedNode(259 /* ExportAssignment */); + node.decorators = asNodeArray(decorators); + node.modifiers = asNodeArray(modifiers); + node.isExportEquals = isExportEquals; + node.expression = isExportEquals ? ts.parenthesizeBinaryOperand(62 /* EqualsToken */, expression, /*isLeftSideOfBinary*/ false, /*leftOperand*/ undefined) : ts.parenthesizeDefaultExpression(expression); + return node; + } + ts.createExportAssignment = createExportAssignment; + function updateExportAssignment(node, decorators, modifiers, expression) { + return node.decorators !== decorators + || node.modifiers !== modifiers + || node.expression !== expression + ? updateNode(createExportAssignment(decorators, modifiers, node.isExportEquals, expression), node) + : node; + } + ts.updateExportAssignment = updateExportAssignment; + function createExportDeclaration(decorators, modifiers, exportClause, moduleSpecifier, isTypeOnly) { + if (isTypeOnly === void 0) { isTypeOnly = false; } + var node = createSynthesizedNode(260 /* ExportDeclaration */); + node.decorators = asNodeArray(decorators); + node.modifiers = asNodeArray(modifiers); + node.isTypeOnly = isTypeOnly; + node.exportClause = exportClause; + node.moduleSpecifier = moduleSpecifier; + return node; + } + ts.createExportDeclaration = createExportDeclaration; + function updateExportDeclaration(node, decorators, modifiers, exportClause, moduleSpecifier, isTypeOnly) { + return node.decorators !== decorators + || node.modifiers !== modifiers + || node.isTypeOnly !== isTypeOnly + || node.exportClause !== exportClause + || node.moduleSpecifier !== moduleSpecifier + ? updateNode(createExportDeclaration(decorators, modifiers, exportClause, moduleSpecifier, isTypeOnly), node) + : node; + } + ts.updateExportDeclaration = updateExportDeclaration; + /* @internal */ + function createEmptyExports() { + return createExportDeclaration(/*decorators*/ undefined, /*modifiers*/ undefined, createNamedExports([]), /*moduleSpecifier*/ undefined); + } + ts.createEmptyExports = createEmptyExports; + function createNamedExports(elements) { + var node = createSynthesizedNode(261 /* NamedExports */); + node.elements = createNodeArray(elements); + return node; + } + ts.createNamedExports = createNamedExports; + function updateNamedExports(node, elements) { + return node.elements !== elements + ? updateNode(createNamedExports(elements), node) + : node; + } + ts.updateNamedExports = updateNamedExports; + function createExportSpecifier(propertyName, name) { + var node = createSynthesizedNode(263 /* ExportSpecifier */); + node.propertyName = asName(propertyName); + node.name = asName(name); + return node; + } + ts.createExportSpecifier = createExportSpecifier; + function updateExportSpecifier(node, propertyName, name) { + return node.propertyName !== propertyName + || node.name !== name + ? updateNode(createExportSpecifier(propertyName, name), node) + : node; + } + ts.updateExportSpecifier = updateExportSpecifier; + // Module references + function createExternalModuleReference(expression) { + var node = createSynthesizedNode(265 /* ExternalModuleReference */); + node.expression = expression; + return node; + } + ts.createExternalModuleReference = createExternalModuleReference; + function updateExternalModuleReference(node, expression) { + return node.expression !== expression + ? updateNode(createExternalModuleReference(expression), node) + : node; + } + ts.updateExternalModuleReference = updateExternalModuleReference; + // JSDoc + /* @internal */ + function createJSDocTypeExpression(type) { + var node = createSynthesizedNode(294 /* JSDocTypeExpression */); + node.type = type; + return node; + } + ts.createJSDocTypeExpression = createJSDocTypeExpression; + /* @internal */ + function createJSDocTypeTag(typeExpression, comment) { + var tag = createJSDocTag(320 /* JSDocTypeTag */, "type"); + tag.typeExpression = typeExpression; + tag.comment = comment; + return tag; + } + ts.createJSDocTypeTag = createJSDocTypeTag; + /* @internal */ + function createJSDocReturnTag(typeExpression, comment) { + var tag = createJSDocTag(318 /* JSDocReturnTag */, "returns"); + tag.typeExpression = typeExpression; + tag.comment = comment; + return tag; + } + ts.createJSDocReturnTag = createJSDocReturnTag; + /** @internal */ + function createJSDocThisTag(typeExpression) { + var tag = createJSDocTag(319 /* JSDocThisTag */, "this"); + tag.typeExpression = typeExpression; + return tag; + } + ts.createJSDocThisTag = createJSDocThisTag; + /* @internal */ + function createJSDocParamTag(name, isBracketed, typeExpression, comment) { + var tag = createJSDocTag(317 /* JSDocParameterTag */, "param"); + tag.typeExpression = typeExpression; + tag.name = name; + tag.isBracketed = isBracketed; + tag.comment = comment; + return tag; + } + ts.createJSDocParamTag = createJSDocParamTag; + /* @internal */ + function createJSDocClassTag() { + return createJSDocTag(310 /* JSDocClassTag */, "class"); + } + ts.createJSDocClassTag = createJSDocClassTag; + /* @internal */ + function createJSDocComment(comment, tags) { + var node = createSynthesizedNode(303 /* JSDocComment */); + node.comment = comment; + node.tags = tags; + return node; + } + ts.createJSDocComment = createJSDocComment; + /* @internal */ + function createJSDocTag(kind, tagName) { + var node = createSynthesizedNode(kind); + node.tagName = createIdentifier(tagName); + return node; + } + // JSX + function createJsxElement(openingElement, children, closingElement) { + var node = createSynthesizedNode(266 /* JsxElement */); + node.openingElement = openingElement; + node.children = createNodeArray(children); + node.closingElement = closingElement; + return node; + } + ts.createJsxElement = createJsxElement; + function updateJsxElement(node, openingElement, children, closingElement) { + return node.openingElement !== openingElement + || node.children !== children + || node.closingElement !== closingElement + ? updateNode(createJsxElement(openingElement, children, closingElement), node) + : node; + } + ts.updateJsxElement = updateJsxElement; + function createJsxSelfClosingElement(tagName, typeArguments, attributes) { + var node = createSynthesizedNode(267 /* JsxSelfClosingElement */); + node.tagName = tagName; + node.typeArguments = asNodeArray(typeArguments); + node.attributes = attributes; + return node; + } + ts.createJsxSelfClosingElement = createJsxSelfClosingElement; + function updateJsxSelfClosingElement(node, tagName, typeArguments, attributes) { + return node.tagName !== tagName + || node.typeArguments !== typeArguments + || node.attributes !== attributes + ? updateNode(createJsxSelfClosingElement(tagName, typeArguments, attributes), node) + : node; + } + ts.updateJsxSelfClosingElement = updateJsxSelfClosingElement; + function createJsxOpeningElement(tagName, typeArguments, attributes) { + var node = createSynthesizedNode(268 /* JsxOpeningElement */); + node.tagName = tagName; + node.typeArguments = asNodeArray(typeArguments); + node.attributes = attributes; + return node; + } + ts.createJsxOpeningElement = createJsxOpeningElement; + function updateJsxOpeningElement(node, tagName, typeArguments, attributes) { + return node.tagName !== tagName + || node.typeArguments !== typeArguments + || node.attributes !== attributes + ? updateNode(createJsxOpeningElement(tagName, typeArguments, attributes), node) + : node; + } + ts.updateJsxOpeningElement = updateJsxOpeningElement; + function createJsxClosingElement(tagName) { + var node = createSynthesizedNode(269 /* JsxClosingElement */); + node.tagName = tagName; + return node; + } + ts.createJsxClosingElement = createJsxClosingElement; + function updateJsxClosingElement(node, tagName) { + return node.tagName !== tagName + ? updateNode(createJsxClosingElement(tagName), node) + : node; + } + ts.updateJsxClosingElement = updateJsxClosingElement; + function createJsxFragment(openingFragment, children, closingFragment) { + var node = createSynthesizedNode(270 /* JsxFragment */); + node.openingFragment = openingFragment; + node.children = createNodeArray(children); + node.closingFragment = closingFragment; + return node; + } + ts.createJsxFragment = createJsxFragment; + function createJsxText(text, containsOnlyTriviaWhiteSpaces) { + var node = createSynthesizedNode(11 /* JsxText */); + node.text = text; + node.containsOnlyTriviaWhiteSpaces = !!containsOnlyTriviaWhiteSpaces; + return node; + } + ts.createJsxText = createJsxText; + function updateJsxText(node, text, containsOnlyTriviaWhiteSpaces) { + return node.text !== text + || node.containsOnlyTriviaWhiteSpaces !== containsOnlyTriviaWhiteSpaces + ? updateNode(createJsxText(text, containsOnlyTriviaWhiteSpaces), node) + : node; + } + ts.updateJsxText = updateJsxText; + function createJsxOpeningFragment() { + return createSynthesizedNode(271 /* JsxOpeningFragment */); + } + ts.createJsxOpeningFragment = createJsxOpeningFragment; + function createJsxJsxClosingFragment() { + return createSynthesizedNode(272 /* JsxClosingFragment */); + } + ts.createJsxJsxClosingFragment = createJsxJsxClosingFragment; + function updateJsxFragment(node, openingFragment, children, closingFragment) { + return node.openingFragment !== openingFragment + || node.children !== children + || node.closingFragment !== closingFragment + ? updateNode(createJsxFragment(openingFragment, children, closingFragment), node) + : node; + } + ts.updateJsxFragment = updateJsxFragment; + function createJsxAttribute(name, initializer) { + var node = createSynthesizedNode(273 /* JsxAttribute */); + node.name = name; + node.initializer = initializer; + return node; + } + ts.createJsxAttribute = createJsxAttribute; + function updateJsxAttribute(node, name, initializer) { + return node.name !== name + || node.initializer !== initializer + ? updateNode(createJsxAttribute(name, initializer), node) + : node; + } + ts.updateJsxAttribute = updateJsxAttribute; + function createJsxAttributes(properties) { + var node = createSynthesizedNode(274 /* JsxAttributes */); + node.properties = createNodeArray(properties); + return node; + } + ts.createJsxAttributes = createJsxAttributes; + function updateJsxAttributes(node, properties) { + return node.properties !== properties + ? updateNode(createJsxAttributes(properties), node) + : node; + } + ts.updateJsxAttributes = updateJsxAttributes; + function createJsxSpreadAttribute(expression) { + var node = createSynthesizedNode(275 /* JsxSpreadAttribute */); + node.expression = expression; + return node; + } + ts.createJsxSpreadAttribute = createJsxSpreadAttribute; + function updateJsxSpreadAttribute(node, expression) { + return node.expression !== expression + ? updateNode(createJsxSpreadAttribute(expression), node) + : node; + } + ts.updateJsxSpreadAttribute = updateJsxSpreadAttribute; + function createJsxExpression(dotDotDotToken, expression) { + var node = createSynthesizedNode(276 /* JsxExpression */); + node.dotDotDotToken = dotDotDotToken; + node.expression = expression; + return node; + } + ts.createJsxExpression = createJsxExpression; + function updateJsxExpression(node, expression) { + return node.expression !== expression + ? updateNode(createJsxExpression(node.dotDotDotToken, expression), node) + : node; + } + ts.updateJsxExpression = updateJsxExpression; + // Clauses + function createCaseClause(expression, statements) { + var node = createSynthesizedNode(277 /* CaseClause */); + node.expression = ts.parenthesizeExpressionForList(expression); + node.statements = createNodeArray(statements); + return node; + } + ts.createCaseClause = createCaseClause; + function updateCaseClause(node, expression, statements) { + return node.expression !== expression + || node.statements !== statements + ? updateNode(createCaseClause(expression, statements), node) + : node; + } + ts.updateCaseClause = updateCaseClause; + function createDefaultClause(statements) { + var node = createSynthesizedNode(278 /* DefaultClause */); + node.statements = createNodeArray(statements); + return node; + } + ts.createDefaultClause = createDefaultClause; + function updateDefaultClause(node, statements) { + return node.statements !== statements + ? updateNode(createDefaultClause(statements), node) + : node; + } + ts.updateDefaultClause = updateDefaultClause; + function createHeritageClause(token, types) { + var node = createSynthesizedNode(279 /* HeritageClause */); + node.token = token; + node.types = createNodeArray(types); + return node; + } + ts.createHeritageClause = createHeritageClause; + function updateHeritageClause(node, types) { + return node.types !== types + ? updateNode(createHeritageClause(node.token, types), node) + : node; + } + ts.updateHeritageClause = updateHeritageClause; + function createCatchClause(variableDeclaration, block) { + var node = createSynthesizedNode(280 /* CatchClause */); + node.variableDeclaration = ts.isString(variableDeclaration) ? createVariableDeclaration(variableDeclaration) : variableDeclaration; + node.block = block; + return node; + } + ts.createCatchClause = createCatchClause; + function updateCatchClause(node, variableDeclaration, block) { + return node.variableDeclaration !== variableDeclaration + || node.block !== block + ? updateNode(createCatchClause(variableDeclaration, block), node) + : node; + } + ts.updateCatchClause = updateCatchClause; + // Property assignments + function createPropertyAssignment(name, initializer) { + var node = createSynthesizedNode(281 /* PropertyAssignment */); + node.name = asName(name); + node.questionToken = undefined; + node.initializer = ts.parenthesizeExpressionForList(initializer); + return node; + } + ts.createPropertyAssignment = createPropertyAssignment; + function updatePropertyAssignment(node, name, initializer) { + return node.name !== name + || node.initializer !== initializer + ? updateNode(createPropertyAssignment(name, initializer), node) + : node; + } + ts.updatePropertyAssignment = updatePropertyAssignment; + function createShorthandPropertyAssignment(name, objectAssignmentInitializer) { + var node = createSynthesizedNode(282 /* ShorthandPropertyAssignment */); + node.name = asName(name); + node.objectAssignmentInitializer = objectAssignmentInitializer !== undefined ? ts.parenthesizeExpressionForList(objectAssignmentInitializer) : undefined; + return node; + } + ts.createShorthandPropertyAssignment = createShorthandPropertyAssignment; + function updateShorthandPropertyAssignment(node, name, objectAssignmentInitializer) { + return node.name !== name + || node.objectAssignmentInitializer !== objectAssignmentInitializer + ? updateNode(createShorthandPropertyAssignment(name, objectAssignmentInitializer), node) + : node; + } + ts.updateShorthandPropertyAssignment = updateShorthandPropertyAssignment; + function createSpreadAssignment(expression) { + var node = createSynthesizedNode(283 /* SpreadAssignment */); + node.expression = ts.parenthesizeExpressionForList(expression); + return node; + } + ts.createSpreadAssignment = createSpreadAssignment; + function updateSpreadAssignment(node, expression) { + return node.expression !== expression + ? updateNode(createSpreadAssignment(expression), node) + : node; + } + ts.updateSpreadAssignment = updateSpreadAssignment; + // Enum + function createEnumMember(name, initializer) { + var node = createSynthesizedNode(284 /* EnumMember */); + node.name = asName(name); + node.initializer = initializer && ts.parenthesizeExpressionForList(initializer); + return node; + } + ts.createEnumMember = createEnumMember; + function updateEnumMember(node, name, initializer) { + return node.name !== name + || node.initializer !== initializer + ? updateNode(createEnumMember(name, initializer), node) + : node; + } + ts.updateEnumMember = updateEnumMember; + // Top-level nodes + function updateSourceFileNode(node, statements, isDeclarationFile, referencedFiles, typeReferences, hasNoDefaultLib, libReferences) { + if (node.statements !== statements || + (isDeclarationFile !== undefined && node.isDeclarationFile !== isDeclarationFile) || + (referencedFiles !== undefined && node.referencedFiles !== referencedFiles) || + (typeReferences !== undefined && node.typeReferenceDirectives !== typeReferences) || + (libReferences !== undefined && node.libReferenceDirectives !== libReferences) || + (hasNoDefaultLib !== undefined && node.hasNoDefaultLib !== hasNoDefaultLib)) { + var updated = createSynthesizedNode(290 /* SourceFile */); + updated.flags |= node.flags; + updated.statements = createNodeArray(statements); + updated.endOfFileToken = node.endOfFileToken; + updated.fileName = node.fileName; + updated.path = node.path; + updated.text = node.text; + updated.isDeclarationFile = isDeclarationFile === undefined ? node.isDeclarationFile : isDeclarationFile; + updated.referencedFiles = referencedFiles === undefined ? node.referencedFiles : referencedFiles; + updated.typeReferenceDirectives = typeReferences === undefined ? node.typeReferenceDirectives : typeReferences; + updated.hasNoDefaultLib = hasNoDefaultLib === undefined ? node.hasNoDefaultLib : hasNoDefaultLib; + updated.libReferenceDirectives = libReferences === undefined ? node.libReferenceDirectives : libReferences; + if (node.amdDependencies !== undefined) + updated.amdDependencies = node.amdDependencies; + if (node.moduleName !== undefined) + updated.moduleName = node.moduleName; + if (node.languageVariant !== undefined) + updated.languageVariant = node.languageVariant; + if (node.renamedDependencies !== undefined) + updated.renamedDependencies = node.renamedDependencies; + if (node.languageVersion !== undefined) + updated.languageVersion = node.languageVersion; + if (node.scriptKind !== undefined) + updated.scriptKind = node.scriptKind; + if (node.externalModuleIndicator !== undefined) + updated.externalModuleIndicator = node.externalModuleIndicator; + if (node.commonJsModuleIndicator !== undefined) + updated.commonJsModuleIndicator = node.commonJsModuleIndicator; + if (node.identifiers !== undefined) + updated.identifiers = node.identifiers; + if (node.nodeCount !== undefined) + updated.nodeCount = node.nodeCount; + if (node.identifierCount !== undefined) + updated.identifierCount = node.identifierCount; + if (node.symbolCount !== undefined) + updated.symbolCount = node.symbolCount; + if (node.parseDiagnostics !== undefined) + updated.parseDiagnostics = node.parseDiagnostics; + if (node.bindDiagnostics !== undefined) + updated.bindDiagnostics = node.bindDiagnostics; + if (node.bindSuggestionDiagnostics !== undefined) + updated.bindSuggestionDiagnostics = node.bindSuggestionDiagnostics; + if (node.lineMap !== undefined) + updated.lineMap = node.lineMap; + if (node.classifiableNames !== undefined) + updated.classifiableNames = node.classifiableNames; + if (node.resolvedModules !== undefined) + updated.resolvedModules = node.resolvedModules; + if (node.resolvedTypeReferenceDirectiveNames !== undefined) + updated.resolvedTypeReferenceDirectiveNames = node.resolvedTypeReferenceDirectiveNames; + if (node.imports !== undefined) + updated.imports = node.imports; + if (node.moduleAugmentations !== undefined) + updated.moduleAugmentations = node.moduleAugmentations; + if (node.pragmas !== undefined) + updated.pragmas = node.pragmas; + if (node.localJsxFactory !== undefined) + updated.localJsxFactory = node.localJsxFactory; + if (node.localJsxNamespace !== undefined) + updated.localJsxNamespace = node.localJsxNamespace; + return updateNode(updated, node); + } + return node; + } + ts.updateSourceFileNode = updateSourceFileNode; + /** + * Creates a shallow, memberwise clone of a node for mutation. + */ + function getMutableClone(node) { + var clone = getSynthesizedClone(node); + clone.pos = node.pos; + clone.end = node.end; + clone.parent = node.parent; + return clone; + } + ts.getMutableClone = getMutableClone; + // Transformation nodes + /** + * Creates a synthetic statement to act as a placeholder for a not-emitted statement in + * order to preserve comments. + * + * @param original The original statement. + */ + function createNotEmittedStatement(original) { + var node = createSynthesizedNode(325 /* NotEmittedStatement */); + node.original = original; + setTextRange(node, original); + return node; + } + ts.createNotEmittedStatement = createNotEmittedStatement; + /** + * Creates a synthetic element to act as a placeholder for the end of an emitted declaration in + * order to properly emit exports. + */ + /* @internal */ + function createEndOfDeclarationMarker(original) { + var node = createSynthesizedNode(329 /* EndOfDeclarationMarker */); + node.emitNode = {}; + node.original = original; + return node; + } + ts.createEndOfDeclarationMarker = createEndOfDeclarationMarker; + /** + * Creates a synthetic element to act as a placeholder for the beginning of a merged declaration in + * order to properly emit exports. + */ + /* @internal */ + function createMergeDeclarationMarker(original) { + var node = createSynthesizedNode(328 /* MergeDeclarationMarker */); + node.emitNode = {}; + node.original = original; + return node; + } + ts.createMergeDeclarationMarker = createMergeDeclarationMarker; + /** + * Creates a synthetic expression to act as a placeholder for a not-emitted expression in + * order to preserve comments or sourcemap positions. + * + * @param expression The inner expression to emit. + * @param original The original outer expression. + * @param location The location for the expression. Defaults to the positions from "original" if provided. + */ + function createPartiallyEmittedExpression(expression, original) { + var node = createSynthesizedNode(326 /* PartiallyEmittedExpression */); + node.expression = expression; + node.original = original; + setTextRange(node, original); + return node; + } + ts.createPartiallyEmittedExpression = createPartiallyEmittedExpression; + function updatePartiallyEmittedExpression(node, expression) { + if (node.expression !== expression) { + return updateNode(createPartiallyEmittedExpression(expression, node.original), node); + } + return node; + } + ts.updatePartiallyEmittedExpression = updatePartiallyEmittedExpression; + function flattenCommaElements(node) { + if (ts.nodeIsSynthesized(node) && !ts.isParseTreeNode(node) && !node.original && !node.emitNode && !node.id) { + if (node.kind === 327 /* CommaListExpression */) { + return node.elements; + } + if (ts.isBinaryExpression(node) && node.operatorToken.kind === 27 /* CommaToken */) { + return [node.left, node.right]; + } + } + return node; + } + function createCommaList(elements) { + var node = createSynthesizedNode(327 /* CommaListExpression */); + node.elements = createNodeArray(ts.sameFlatMap(elements, flattenCommaElements)); + return node; + } + ts.createCommaList = createCommaList; + function updateCommaList(node, elements) { + return node.elements !== elements + ? updateNode(createCommaList(elements), node) + : node; + } + ts.updateCommaList = updateCommaList; + /* @internal */ + function createSyntheticReferenceExpression(expression, thisArg) { + var node = createSynthesizedNode(330 /* SyntheticReferenceExpression */); + node.expression = expression; + node.thisArg = thisArg; + return node; + } + ts.createSyntheticReferenceExpression = createSyntheticReferenceExpression; + /* @internal */ + function updateSyntheticReferenceExpression(node, expression, thisArg) { + return node.expression !== expression + || node.thisArg !== thisArg + ? updateNode(createSyntheticReferenceExpression(expression, thisArg), node) + : node; + } + ts.updateSyntheticReferenceExpression = updateSyntheticReferenceExpression; + function createBundle(sourceFiles, prepends) { + if (prepends === void 0) { prepends = ts.emptyArray; } + var node = ts.createNode(291 /* Bundle */); + node.prepends = prepends; + node.sourceFiles = sourceFiles; + return node; + } + ts.createBundle = createBundle; + var allUnscopedEmitHelpers; + function getAllUnscopedEmitHelpers() { + return allUnscopedEmitHelpers || (allUnscopedEmitHelpers = ts.arrayToMap([ + ts.valuesHelper, + ts.readHelper, + ts.spreadHelper, + ts.spreadArraysHelper, + ts.restHelper, + ts.decorateHelper, + ts.metadataHelper, + ts.paramHelper, + ts.awaiterHelper, + ts.assignHelper, + ts.awaitHelper, + ts.asyncGeneratorHelper, + ts.asyncDelegator, + ts.asyncValues, + ts.extendsHelper, + ts.templateObjectHelper, + ts.generatorHelper, + ts.importStarHelper, + ts.importDefaultHelper, + ts.classPrivateFieldGetHelper, + ts.classPrivateFieldSetHelper, + ts.createBindingHelper, + ts.setModuleDefaultHelper + ], function (helper) { return helper.name; })); + } + function createUnparsedSource() { + var node = ts.createNode(292 /* UnparsedSource */); + node.prologues = ts.emptyArray; + node.referencedFiles = ts.emptyArray; + node.libReferenceDirectives = ts.emptyArray; + node.getLineAndCharacterOfPosition = function (pos) { return ts.getLineAndCharacterOfPosition(node, pos); }; + return node; + } + function createUnparsedSourceFile(textOrInputFiles, mapPathOrType, mapTextOrStripInternal) { + var node = createUnparsedSource(); + var stripInternal; + var bundleFileInfo; + if (!ts.isString(textOrInputFiles)) { + ts.Debug.assert(mapPathOrType === "js" || mapPathOrType === "dts"); + node.fileName = (mapPathOrType === "js" ? textOrInputFiles.javascriptPath : textOrInputFiles.declarationPath) || ""; + node.sourceMapPath = mapPathOrType === "js" ? textOrInputFiles.javascriptMapPath : textOrInputFiles.declarationMapPath; + Object.defineProperties(node, { + text: { get: function () { return mapPathOrType === "js" ? textOrInputFiles.javascriptText : textOrInputFiles.declarationText; } }, + sourceMapText: { get: function () { return mapPathOrType === "js" ? textOrInputFiles.javascriptMapText : textOrInputFiles.declarationMapText; } }, + }); + if (textOrInputFiles.buildInfo && textOrInputFiles.buildInfo.bundle) { + node.oldFileOfCurrentEmit = textOrInputFiles.oldFileOfCurrentEmit; + ts.Debug.assert(mapTextOrStripInternal === undefined || typeof mapTextOrStripInternal === "boolean"); + stripInternal = mapTextOrStripInternal; + bundleFileInfo = mapPathOrType === "js" ? textOrInputFiles.buildInfo.bundle.js : textOrInputFiles.buildInfo.bundle.dts; + if (node.oldFileOfCurrentEmit) { + parseOldFileOfCurrentEmit(node, ts.Debug.checkDefined(bundleFileInfo)); + return node; + } + } + } + else { + node.fileName = ""; + node.text = textOrInputFiles; + node.sourceMapPath = mapPathOrType; + node.sourceMapText = mapTextOrStripInternal; + } + ts.Debug.assert(!node.oldFileOfCurrentEmit); + parseUnparsedSourceFile(node, bundleFileInfo, stripInternal); + return node; + } + ts.createUnparsedSourceFile = createUnparsedSourceFile; + function parseUnparsedSourceFile(node, bundleFileInfo, stripInternal) { + var prologues; + var helpers; + var referencedFiles; + var typeReferenceDirectives; + var libReferenceDirectives; + var texts; + for (var _i = 0, _a = bundleFileInfo ? bundleFileInfo.sections : ts.emptyArray; _i < _a.length; _i++) { + var section = _a[_i]; + switch (section.kind) { + case "prologue" /* Prologue */: + (prologues || (prologues = [])).push(createUnparsedNode(section, node)); + break; + case "emitHelpers" /* EmitHelpers */: + (helpers || (helpers = [])).push(getAllUnscopedEmitHelpers().get(section.data)); + break; + case "no-default-lib" /* NoDefaultLib */: + node.hasNoDefaultLib = true; + break; + case "reference" /* Reference */: + (referencedFiles || (referencedFiles = [])).push({ pos: -1, end: -1, fileName: section.data }); + break; + case "type" /* Type */: + (typeReferenceDirectives || (typeReferenceDirectives = [])).push(section.data); + break; + case "lib" /* Lib */: + (libReferenceDirectives || (libReferenceDirectives = [])).push({ pos: -1, end: -1, fileName: section.data }); + break; + case "prepend" /* Prepend */: + var prependNode = createUnparsedNode(section, node); + var prependTexts = void 0; + for (var _b = 0, _c = section.texts; _b < _c.length; _b++) { + var text = _c[_b]; + if (!stripInternal || text.kind !== "internal" /* Internal */) { + (prependTexts || (prependTexts = [])).push(createUnparsedNode(text, node)); + } + } + prependNode.texts = prependTexts || ts.emptyArray; + (texts || (texts = [])).push(prependNode); + break; + case "internal" /* Internal */: + if (stripInternal) { + if (!texts) + texts = []; + break; + } + // falls through + case "text" /* Text */: + (texts || (texts = [])).push(createUnparsedNode(section, node)); + break; + default: + ts.Debug.assertNever(section); + } + } + node.prologues = prologues || ts.emptyArray; + node.helpers = helpers; + node.referencedFiles = referencedFiles || ts.emptyArray; + node.typeReferenceDirectives = typeReferenceDirectives; + node.libReferenceDirectives = libReferenceDirectives || ts.emptyArray; + node.texts = texts || [createUnparsedNode({ kind: "text" /* Text */, pos: 0, end: node.text.length }, node)]; + } + function parseOldFileOfCurrentEmit(node, bundleFileInfo) { + ts.Debug.assert(!!node.oldFileOfCurrentEmit); + var texts; + var syntheticReferences; + for (var _i = 0, _a = bundleFileInfo.sections; _i < _a.length; _i++) { + var section = _a[_i]; + switch (section.kind) { + case "internal" /* Internal */: + case "text" /* Text */: + (texts || (texts = [])).push(createUnparsedNode(section, node)); + break; + case "no-default-lib" /* NoDefaultLib */: + case "reference" /* Reference */: + case "type" /* Type */: + case "lib" /* Lib */: + (syntheticReferences || (syntheticReferences = [])).push(createUnparsedSyntheticReference(section, node)); + break; + // Ignore + case "prologue" /* Prologue */: + case "emitHelpers" /* EmitHelpers */: + case "prepend" /* Prepend */: + break; + default: + ts.Debug.assertNever(section); + } + } + node.texts = texts || ts.emptyArray; + node.helpers = ts.map(bundleFileInfo.sources && bundleFileInfo.sources.helpers, function (name) { return getAllUnscopedEmitHelpers().get(name); }); + node.syntheticReferences = syntheticReferences; + return node; + } + function mapBundleFileSectionKindToSyntaxKind(kind) { + switch (kind) { + case "prologue" /* Prologue */: return 285 /* UnparsedPrologue */; + case "prepend" /* Prepend */: return 286 /* UnparsedPrepend */; + case "internal" /* Internal */: return 288 /* UnparsedInternalText */; + case "text" /* Text */: return 287 /* UnparsedText */; + case "emitHelpers" /* EmitHelpers */: + case "no-default-lib" /* NoDefaultLib */: + case "reference" /* Reference */: + case "type" /* Type */: + case "lib" /* Lib */: + return ts.Debug.fail("BundleFileSectionKind: " + kind + " not yet mapped to SyntaxKind"); + default: + return ts.Debug.assertNever(kind); + } + } + function createUnparsedNode(section, parent) { + var node = ts.createNode(mapBundleFileSectionKindToSyntaxKind(section.kind), section.pos, section.end); + node.parent = parent; + node.data = section.data; + return node; + } + function createUnparsedSyntheticReference(section, parent) { + var node = ts.createNode(289 /* UnparsedSyntheticReference */, section.pos, section.end); + node.parent = parent; + node.data = section.data; + node.section = section; + return node; + } + function createInputFiles(javascriptTextOrReadFileText, declarationTextOrJavascriptPath, javascriptMapPath, javascriptMapTextOrDeclarationPath, declarationMapPath, declarationMapTextOrBuildInfoPath, javascriptPath, declarationPath, buildInfoPath, buildInfo, oldFileOfCurrentEmit) { + var node = ts.createNode(293 /* InputFiles */); + if (!ts.isString(javascriptTextOrReadFileText)) { + var cache_1 = ts.createMap(); + var textGetter_1 = function (path) { + if (path === undefined) + return undefined; + var value = cache_1.get(path); + if (value === undefined) { + value = javascriptTextOrReadFileText(path); + cache_1.set(path, value !== undefined ? value : false); + } + return value !== false ? value : undefined; + }; + var definedTextGetter_1 = function (path) { + var result = textGetter_1(path); + return result !== undefined ? result : "/* Input file " + path + " was missing */\r\n"; + }; + var buildInfo_1; + var getAndCacheBuildInfo_1 = function (getText) { + if (buildInfo_1 === undefined) { + var result = getText(); + buildInfo_1 = result !== undefined ? ts.getBuildInfo(result) : false; + } + return buildInfo_1 || undefined; + }; + node.javascriptPath = declarationTextOrJavascriptPath; + node.javascriptMapPath = javascriptMapPath; + node.declarationPath = ts.Debug.checkDefined(javascriptMapTextOrDeclarationPath); + node.declarationMapPath = declarationMapPath; + node.buildInfoPath = declarationMapTextOrBuildInfoPath; + Object.defineProperties(node, { + javascriptText: { get: function () { return definedTextGetter_1(declarationTextOrJavascriptPath); } }, + javascriptMapText: { get: function () { return textGetter_1(javascriptMapPath); } }, + declarationText: { get: function () { return definedTextGetter_1(ts.Debug.checkDefined(javascriptMapTextOrDeclarationPath)); } }, + declarationMapText: { get: function () { return textGetter_1(declarationMapPath); } }, + buildInfo: { get: function () { return getAndCacheBuildInfo_1(function () { return textGetter_1(declarationMapTextOrBuildInfoPath); }); } } + }); + } + else { + node.javascriptText = javascriptTextOrReadFileText; + node.javascriptMapPath = javascriptMapPath; + node.javascriptMapText = javascriptMapTextOrDeclarationPath; + node.declarationText = declarationTextOrJavascriptPath; + node.declarationMapPath = declarationMapPath; + node.declarationMapText = declarationMapTextOrBuildInfoPath; + node.javascriptPath = javascriptPath; + node.declarationPath = declarationPath; + node.buildInfoPath = buildInfoPath; + node.buildInfo = buildInfo; + node.oldFileOfCurrentEmit = oldFileOfCurrentEmit; + } + return node; + } + ts.createInputFiles = createInputFiles; + function updateBundle(node, sourceFiles, prepends) { + if (prepends === void 0) { prepends = ts.emptyArray; } + if (node.sourceFiles !== sourceFiles || node.prepends !== prepends) { + return createBundle(sourceFiles, prepends); + } + return node; + } + ts.updateBundle = updateBundle; + function createImmediatelyInvokedFunctionExpression(statements, param, paramValue) { + return createCall(createFunctionExpression( + /*modifiers*/ undefined, + /*asteriskToken*/ undefined, + /*name*/ undefined, + /*typeParameters*/ undefined, + /*parameters*/ param ? [param] : [], + /*type*/ undefined, createBlock(statements, /*multiLine*/ true)), + /*typeArguments*/ undefined, + /*argumentsArray*/ paramValue ? [paramValue] : []); + } + ts.createImmediatelyInvokedFunctionExpression = createImmediatelyInvokedFunctionExpression; + function createImmediatelyInvokedArrowFunction(statements, param, paramValue) { + return createCall(createArrowFunction( + /*modifiers*/ undefined, + /*typeParameters*/ undefined, + /*parameters*/ param ? [param] : [], + /*type*/ undefined, + /*equalsGreaterThanToken*/ undefined, createBlock(statements, /*multiLine*/ true)), + /*typeArguments*/ undefined, + /*argumentsArray*/ paramValue ? [paramValue] : []); + } + ts.createImmediatelyInvokedArrowFunction = createImmediatelyInvokedArrowFunction; + function createComma(left, right) { + return createBinary(left, 27 /* CommaToken */, right); + } + ts.createComma = createComma; + function createLessThan(left, right) { + return createBinary(left, 29 /* LessThanToken */, right); + } + ts.createLessThan = createLessThan; + function createAssignment(left, right) { + return createBinary(left, 62 /* EqualsToken */, right); + } + ts.createAssignment = createAssignment; + function createStrictEquality(left, right) { + return createBinary(left, 36 /* EqualsEqualsEqualsToken */, right); + } + ts.createStrictEquality = createStrictEquality; + function createStrictInequality(left, right) { + return createBinary(left, 37 /* ExclamationEqualsEqualsToken */, right); + } + ts.createStrictInequality = createStrictInequality; + function createAdd(left, right) { + return createBinary(left, 39 /* PlusToken */, right); + } + ts.createAdd = createAdd; + function createSubtract(left, right) { + return createBinary(left, 40 /* MinusToken */, right); + } + ts.createSubtract = createSubtract; + function createPostfixIncrement(operand) { + return createPostfix(operand, 45 /* PlusPlusToken */); + } + ts.createPostfixIncrement = createPostfixIncrement; + function createLogicalAnd(left, right) { + return createBinary(left, 55 /* AmpersandAmpersandToken */, right); + } + ts.createLogicalAnd = createLogicalAnd; + function createLogicalOr(left, right) { + return createBinary(left, 56 /* BarBarToken */, right); + } + ts.createLogicalOr = createLogicalOr; + function createNullishCoalesce(left, right) { + return createBinary(left, 60 /* QuestionQuestionToken */, right); + } + ts.createNullishCoalesce = createNullishCoalesce; + function createLogicalNot(operand) { + return createPrefix(53 /* ExclamationToken */, operand); + } + ts.createLogicalNot = createLogicalNot; + function createVoidZero() { + return createVoid(createLiteral(0)); + } + ts.createVoidZero = createVoidZero; + function createExportDefault(expression) { + return createExportAssignment(/*decorators*/ undefined, /*modifiers*/ undefined, /*isExportEquals*/ false, expression); + } + ts.createExportDefault = createExportDefault; + function createExternalModuleExport(exportName) { + return createExportDeclaration(/*decorators*/ undefined, /*modifiers*/ undefined, createNamedExports([createExportSpecifier(/*propertyName*/ undefined, exportName)])); + } + ts.createExternalModuleExport = createExternalModuleExport; + // Utilities + function asName(name) { + return ts.isString(name) ? createIdentifier(name) : name; + } + function asExpression(value) { + return typeof value === "string" ? createStringLiteral(value) : + typeof value === "number" ? createNumericLiteral("" + value) : + typeof value === "boolean" ? value ? createTrue() : createFalse() : + value; + } + function asNodeArray(array) { + return array ? createNodeArray(array) : undefined; + } + function asToken(value) { + return typeof value === "number" ? createToken(value) : value; + } + function asEmbeddedStatement(statement) { + return statement && ts.isNotEmittedStatement(statement) ? setTextRange(setOriginalNode(createEmptyStatement(), statement), statement) : statement; + } + /** + * Clears any EmitNode entries from parse-tree nodes. + * @param sourceFile A source file. + */ + function disposeEmitNodes(sourceFile) { + // During transformation we may need to annotate a parse tree node with transient + // transformation properties. As parse tree nodes live longer than transformation + // nodes, we need to make sure we reclaim any memory allocated for custom ranges + // from these nodes to ensure we do not hold onto entire subtrees just for position + // information. We also need to reset these nodes to a pre-transformation state + // for incremental parsing scenarios so that we do not impact later emit. + sourceFile = ts.getSourceFileOfNode(ts.getParseTreeNode(sourceFile)); + var emitNode = sourceFile && sourceFile.emitNode; + var annotatedNodes = emitNode && emitNode.annotatedNodes; + if (annotatedNodes) { + for (var _i = 0, annotatedNodes_1 = annotatedNodes; _i < annotatedNodes_1.length; _i++) { + var node = annotatedNodes_1[_i]; + node.emitNode = undefined; + } + } + } + ts.disposeEmitNodes = disposeEmitNodes; + /** + * Associates a node with the current transformation, initializing + * various transient transformation properties. + */ + /* @internal */ + function getOrCreateEmitNode(node) { + if (!node.emitNode) { + if (ts.isParseTreeNode(node)) { + // To avoid holding onto transformation artifacts, we keep track of any + // parse tree node we are annotating. This allows us to clean them up after + // all transformations have completed. + if (node.kind === 290 /* SourceFile */) { + return node.emitNode = { annotatedNodes: [node] }; + } + var sourceFile = ts.getSourceFileOfNode(ts.getParseTreeNode(ts.getSourceFileOfNode(node))); + getOrCreateEmitNode(sourceFile).annotatedNodes.push(node); + } + node.emitNode = {}; + } + return node.emitNode; + } + ts.getOrCreateEmitNode = getOrCreateEmitNode; + /** + * Sets `EmitFlags.NoComments` on a node and removes any leading and trailing synthetic comments. + * @internal + */ + function removeAllComments(node) { + var emitNode = getOrCreateEmitNode(node); + emitNode.flags |= 1536 /* NoComments */; + emitNode.leadingComments = undefined; + emitNode.trailingComments = undefined; + return node; + } + ts.removeAllComments = removeAllComments; + function setTextRange(range, location) { + if (location) { + range.pos = location.pos; + range.end = location.end; + } + return range; + } + ts.setTextRange = setTextRange; + /** + * Sets flags that control emit behavior of a node. + */ + function setEmitFlags(node, emitFlags) { + getOrCreateEmitNode(node).flags = emitFlags; + return node; + } + ts.setEmitFlags = setEmitFlags; + /** + * Sets flags that control emit behavior of a node. + */ + /* @internal */ + function addEmitFlags(node, emitFlags) { + var emitNode = getOrCreateEmitNode(node); + emitNode.flags = emitNode.flags | emitFlags; + return node; + } + ts.addEmitFlags = addEmitFlags; + /** + * Gets a custom text range to use when emitting source maps. + */ + function getSourceMapRange(node) { + var emitNode = node.emitNode; + return (emitNode && emitNode.sourceMapRange) || node; + } + ts.getSourceMapRange = getSourceMapRange; + /** + * Sets a custom text range to use when emitting source maps. + */ + function setSourceMapRange(node, range) { + getOrCreateEmitNode(node).sourceMapRange = range; + return node; + } + ts.setSourceMapRange = setSourceMapRange; + var SourceMapSource; + /** + * Create an external source map source file reference + */ + function createSourceMapSource(fileName, text, skipTrivia) { + return new (SourceMapSource || (SourceMapSource = ts.objectAllocator.getSourceMapSourceConstructor()))(fileName, text, skipTrivia); + } + ts.createSourceMapSource = createSourceMapSource; + /** + * Gets the TextRange to use for source maps for a token of a node. + */ + function getTokenSourceMapRange(node, token) { + var emitNode = node.emitNode; + var tokenSourceMapRanges = emitNode && emitNode.tokenSourceMapRanges; + return tokenSourceMapRanges && tokenSourceMapRanges[token]; + } + ts.getTokenSourceMapRange = getTokenSourceMapRange; + /** + * Sets the TextRange to use for source maps for a token of a node. + */ + function setTokenSourceMapRange(node, token, range) { + var emitNode = getOrCreateEmitNode(node); + var tokenSourceMapRanges = emitNode.tokenSourceMapRanges || (emitNode.tokenSourceMapRanges = []); + tokenSourceMapRanges[token] = range; + return node; + } + ts.setTokenSourceMapRange = setTokenSourceMapRange; + /** + * Gets a custom text range to use when emitting comments. + */ + /*@internal*/ + function getStartsOnNewLine(node) { + var emitNode = node.emitNode; + return emitNode && emitNode.startsOnNewLine; + } + ts.getStartsOnNewLine = getStartsOnNewLine; + /** + * Sets a custom text range to use when emitting comments. + */ + /*@internal*/ + function setStartsOnNewLine(node, newLine) { + getOrCreateEmitNode(node).startsOnNewLine = newLine; + return node; + } + ts.setStartsOnNewLine = setStartsOnNewLine; + /** + * Gets a custom text range to use when emitting comments. + */ + function getCommentRange(node) { + var emitNode = node.emitNode; + return (emitNode && emitNode.commentRange) || node; + } + ts.getCommentRange = getCommentRange; + /** + * Sets a custom text range to use when emitting comments. + */ + function setCommentRange(node, range) { + getOrCreateEmitNode(node).commentRange = range; + return node; + } + ts.setCommentRange = setCommentRange; + function getSyntheticLeadingComments(node) { + var emitNode = node.emitNode; + return emitNode && emitNode.leadingComments; + } + ts.getSyntheticLeadingComments = getSyntheticLeadingComments; + function setSyntheticLeadingComments(node, comments) { + getOrCreateEmitNode(node).leadingComments = comments; + return node; + } + ts.setSyntheticLeadingComments = setSyntheticLeadingComments; + function addSyntheticLeadingComment(node, kind, text, hasTrailingNewLine) { + return setSyntheticLeadingComments(node, ts.append(getSyntheticLeadingComments(node), { kind: kind, pos: -1, end: -1, hasTrailingNewLine: hasTrailingNewLine, text: text })); + } + ts.addSyntheticLeadingComment = addSyntheticLeadingComment; + function getSyntheticTrailingComments(node) { + var emitNode = node.emitNode; + return emitNode && emitNode.trailingComments; + } + ts.getSyntheticTrailingComments = getSyntheticTrailingComments; + function setSyntheticTrailingComments(node, comments) { + getOrCreateEmitNode(node).trailingComments = comments; + return node; + } + ts.setSyntheticTrailingComments = setSyntheticTrailingComments; + function addSyntheticTrailingComment(node, kind, text, hasTrailingNewLine) { + return setSyntheticTrailingComments(node, ts.append(getSyntheticTrailingComments(node), { kind: kind, pos: -1, end: -1, hasTrailingNewLine: hasTrailingNewLine, text: text })); + } + ts.addSyntheticTrailingComment = addSyntheticTrailingComment; + function moveSyntheticComments(node, original) { + setSyntheticLeadingComments(node, getSyntheticLeadingComments(original)); + setSyntheticTrailingComments(node, getSyntheticTrailingComments(original)); + var emit = getOrCreateEmitNode(original); + emit.leadingComments = undefined; + emit.trailingComments = undefined; + return node; + } + ts.moveSyntheticComments = moveSyntheticComments; + /** @internal */ + function ignoreSourceNewlines(node) { + getOrCreateEmitNode(node).flags |= 134217728 /* IgnoreSourceNewlines */; + return node; + } + ts.ignoreSourceNewlines = ignoreSourceNewlines; + /** + * Gets the constant value to emit for an expression. + */ + function getConstantValue(node) { + var emitNode = node.emitNode; + return emitNode && emitNode.constantValue; + } + ts.getConstantValue = getConstantValue; + /** + * Sets the constant value to emit for an expression. + */ + function setConstantValue(node, value) { + var emitNode = getOrCreateEmitNode(node); + emitNode.constantValue = value; + return node; + } + ts.setConstantValue = setConstantValue; + /** + * Adds an EmitHelper to a node. + */ + function addEmitHelper(node, helper) { + var emitNode = getOrCreateEmitNode(node); + emitNode.helpers = ts.append(emitNode.helpers, helper); + return node; + } + ts.addEmitHelper = addEmitHelper; + /** + * Add EmitHelpers to a node. + */ + function addEmitHelpers(node, helpers) { + if (ts.some(helpers)) { + var emitNode = getOrCreateEmitNode(node); + for (var _i = 0, helpers_1 = helpers; _i < helpers_1.length; _i++) { + var helper = helpers_1[_i]; + emitNode.helpers = ts.appendIfUnique(emitNode.helpers, helper); + } + } + return node; + } + ts.addEmitHelpers = addEmitHelpers; + /** + * Removes an EmitHelper from a node. + */ + function removeEmitHelper(node, helper) { + var emitNode = node.emitNode; + if (emitNode) { + var helpers = emitNode.helpers; + if (helpers) { + return ts.orderedRemoveItem(helpers, helper); + } + } + return false; + } + ts.removeEmitHelper = removeEmitHelper; + /** + * Gets the EmitHelpers of a node. + */ + function getEmitHelpers(node) { + var emitNode = node.emitNode; + return emitNode && emitNode.helpers; + } + ts.getEmitHelpers = getEmitHelpers; + /** + * Moves matching emit helpers from a source node to a target node. + */ + function moveEmitHelpers(source, target, predicate) { + var sourceEmitNode = source.emitNode; + var sourceEmitHelpers = sourceEmitNode && sourceEmitNode.helpers; + if (!ts.some(sourceEmitHelpers)) + return; + var targetEmitNode = getOrCreateEmitNode(target); + var helpersRemoved = 0; + for (var i = 0; i < sourceEmitHelpers.length; i++) { + var helper = sourceEmitHelpers[i]; + if (predicate(helper)) { + helpersRemoved++; + targetEmitNode.helpers = ts.appendIfUnique(targetEmitNode.helpers, helper); + } + else if (helpersRemoved > 0) { + sourceEmitHelpers[i - helpersRemoved] = helper; + } + } + if (helpersRemoved > 0) { + sourceEmitHelpers.length -= helpersRemoved; + } + } + ts.moveEmitHelpers = moveEmitHelpers; + /* @internal */ + function compareEmitHelpers(x, y) { + if (x === y) + return 0 /* EqualTo */; + if (x.priority === y.priority) + return 0 /* EqualTo */; + if (x.priority === undefined) + return 1 /* GreaterThan */; + if (y.priority === undefined) + return -1 /* LessThan */; + return ts.compareValues(x.priority, y.priority); + } + ts.compareEmitHelpers = compareEmitHelpers; + function setOriginalNode(node, original) { + node.original = original; + if (original) { + var emitNode = original.emitNode; + if (emitNode) + node.emitNode = mergeEmitNode(emitNode, node.emitNode); + } + return node; + } + ts.setOriginalNode = setOriginalNode; + function mergeEmitNode(sourceEmitNode, destEmitNode) { + var flags = sourceEmitNode.flags, leadingComments = sourceEmitNode.leadingComments, trailingComments = sourceEmitNode.trailingComments, commentRange = sourceEmitNode.commentRange, sourceMapRange = sourceEmitNode.sourceMapRange, tokenSourceMapRanges = sourceEmitNode.tokenSourceMapRanges, constantValue = sourceEmitNode.constantValue, helpers = sourceEmitNode.helpers, startsOnNewLine = sourceEmitNode.startsOnNewLine; + if (!destEmitNode) + destEmitNode = {}; + // We are using `.slice()` here in case `destEmitNode.leadingComments` is pushed to later. + if (leadingComments) + destEmitNode.leadingComments = ts.addRange(leadingComments.slice(), destEmitNode.leadingComments); + if (trailingComments) + destEmitNode.trailingComments = ts.addRange(trailingComments.slice(), destEmitNode.trailingComments); + if (flags) + destEmitNode.flags = flags; + if (commentRange) + destEmitNode.commentRange = commentRange; + if (sourceMapRange) + destEmitNode.sourceMapRange = sourceMapRange; + if (tokenSourceMapRanges) + destEmitNode.tokenSourceMapRanges = mergeTokenSourceMapRanges(tokenSourceMapRanges, destEmitNode.tokenSourceMapRanges); + if (constantValue !== undefined) + destEmitNode.constantValue = constantValue; + if (helpers) + destEmitNode.helpers = ts.addRange(destEmitNode.helpers, helpers); + if (startsOnNewLine !== undefined) + destEmitNode.startsOnNewLine = startsOnNewLine; + return destEmitNode; + } + function mergeTokenSourceMapRanges(sourceRanges, destRanges) { + if (!destRanges) + destRanges = []; + for (var key in sourceRanges) { + destRanges[key] = sourceRanges[key]; + } + return destRanges; + } +})(ts || (ts = {})); +/* @internal */ +var ts; +(function (ts) { + ts.nullTransformationContext = { + enableEmitNotification: ts.noop, + enableSubstitution: ts.noop, + endLexicalEnvironment: ts.returnUndefined, + getCompilerOptions: function () { return ({}); }, + getEmitHost: ts.notImplemented, + getEmitResolver: ts.notImplemented, + setLexicalEnvironmentFlags: ts.noop, + getLexicalEnvironmentFlags: function () { return 0; }, + hoistFunctionDeclaration: ts.noop, + hoistVariableDeclaration: ts.noop, + addInitializationStatement: ts.noop, + isEmitNotificationEnabled: ts.notImplemented, + isSubstitutionEnabled: ts.notImplemented, + onEmitNode: ts.noop, + onSubstituteNode: ts.notImplemented, + readEmitHelpers: ts.notImplemented, + requestEmitHelper: ts.noop, + resumeLexicalEnvironment: ts.noop, + startLexicalEnvironment: ts.noop, + suspendLexicalEnvironment: ts.noop, + addDiagnostic: ts.noop, + }; + function createTypeCheck(value, tag) { + return tag === "undefined" + ? ts.createStrictEquality(value, ts.createVoidZero()) + : ts.createStrictEquality(ts.createTypeOf(value), ts.createLiteral(tag)); + } + ts.createTypeCheck = createTypeCheck; + function createMemberAccessForPropertyName(target, memberName, location) { + if (ts.isComputedPropertyName(memberName)) { + return ts.setTextRange(ts.createElementAccess(target, memberName.expression), location); + } + else { + var expression = ts.setTextRange((ts.isIdentifier(memberName) || ts.isPrivateIdentifier(memberName)) + ? ts.createPropertyAccess(target, memberName) + : ts.createElementAccess(target, memberName), memberName); + ts.getOrCreateEmitNode(expression).flags |= 64 /* NoNestedSourceMaps */; + return expression; + } + } + ts.createMemberAccessForPropertyName = createMemberAccessForPropertyName; + function createFunctionCall(func, thisArg, argumentsList, location) { + return ts.setTextRange(ts.createCall(ts.createPropertyAccess(func, "call"), + /*typeArguments*/ undefined, __spreadArrays([ + thisArg + ], argumentsList)), location); + } + ts.createFunctionCall = createFunctionCall; + function createFunctionApply(func, thisArg, argumentsExpression, location) { + return ts.setTextRange(ts.createCall(ts.createPropertyAccess(func, "apply"), + /*typeArguments*/ undefined, [ + thisArg, + argumentsExpression + ]), location); + } + ts.createFunctionApply = createFunctionApply; + function createArraySlice(array, start) { + var argumentsList = []; + if (start !== undefined) { + argumentsList.push(typeof start === "number" ? ts.createLiteral(start) : start); + } + return ts.createCall(ts.createPropertyAccess(array, "slice"), /*typeArguments*/ undefined, argumentsList); + } + ts.createArraySlice = createArraySlice; + function createArrayConcat(array, values) { + return ts.createCall(ts.createPropertyAccess(array, "concat"), + /*typeArguments*/ undefined, values); + } + ts.createArrayConcat = createArrayConcat; + function createMathPow(left, right, location) { + return ts.setTextRange(ts.createCall(ts.createPropertyAccess(ts.createIdentifier("Math"), "pow"), + /*typeArguments*/ undefined, [left, right]), location); + } + ts.createMathPow = createMathPow; + function createReactNamespace(reactNamespace, parent) { + // To ensure the emit resolver can properly resolve the namespace, we need to + // treat this identifier as if it were a source tree node by clearing the `Synthesized` + // flag and setting a parent node. + var react = ts.createIdentifier(reactNamespace || "React"); + react.flags &= ~8 /* Synthesized */; + // Set the parent that is in parse tree + // this makes sure that parent chain is intact for checker to traverse complete scope tree + react.parent = ts.getParseTreeNode(parent); + return react; + } + function createJsxFactoryExpressionFromEntityName(jsxFactory, parent) { + if (ts.isQualifiedName(jsxFactory)) { + var left = createJsxFactoryExpressionFromEntityName(jsxFactory.left, parent); + var right = ts.createIdentifier(ts.idText(jsxFactory.right)); + right.escapedText = jsxFactory.right.escapedText; + return ts.createPropertyAccess(left, right); + } + else { + return createReactNamespace(ts.idText(jsxFactory), parent); + } + } + function createJsxFactoryExpression(jsxFactoryEntity, reactNamespace, parent) { + return jsxFactoryEntity ? + createJsxFactoryExpressionFromEntityName(jsxFactoryEntity, parent) : + ts.createPropertyAccess(createReactNamespace(reactNamespace, parent), "createElement"); + } + function createExpressionForJsxElement(jsxFactoryEntity, reactNamespace, tagName, props, children, parentElement, location) { + var argumentsList = [tagName]; + if (props) { + argumentsList.push(props); + } + if (children && children.length > 0) { + if (!props) { + argumentsList.push(ts.createNull()); + } + if (children.length > 1) { + for (var _i = 0, children_2 = children; _i < children_2.length; _i++) { + var child = children_2[_i]; + startOnNewLine(child); + argumentsList.push(child); + } + } + else { + argumentsList.push(children[0]); + } + } + return ts.setTextRange(ts.createCall(createJsxFactoryExpression(jsxFactoryEntity, reactNamespace, parentElement), + /*typeArguments*/ undefined, argumentsList), location); + } + ts.createExpressionForJsxElement = createExpressionForJsxElement; + function createExpressionForJsxFragment(jsxFactoryEntity, reactNamespace, children, parentElement, location) { + var tagName = ts.createPropertyAccess(createReactNamespace(reactNamespace, parentElement), "Fragment"); + var argumentsList = [tagName]; + argumentsList.push(ts.createNull()); + if (children && children.length > 0) { + if (children.length > 1) { + for (var _i = 0, children_3 = children; _i < children_3.length; _i++) { + var child = children_3[_i]; + startOnNewLine(child); + argumentsList.push(child); + } + } + else { + argumentsList.push(children[0]); + } + } + return ts.setTextRange(ts.createCall(createJsxFactoryExpression(jsxFactoryEntity, reactNamespace, parentElement), + /*typeArguments*/ undefined, argumentsList), location); + } + ts.createExpressionForJsxFragment = createExpressionForJsxFragment; + // Helpers + /** + * Gets an identifier for the name of an *unscoped* emit helper. + */ + function getUnscopedHelperName(name) { + return ts.setEmitFlags(ts.createIdentifier(name), 4096 /* HelperName */ | 2 /* AdviseOnEmitNode */); + } + ts.getUnscopedHelperName = getUnscopedHelperName; + ts.valuesHelper = { + name: "typescript:values", + importName: "__values", + scoped: false, + text: "\n var __values = (this && this.__values) || function(o) {\n var s = typeof Symbol === \"function\" && Symbol.iterator, m = s && o[s], i = 0;\n if (m) return m.call(o);\n if (o && typeof o.length === \"number\") return {\n next: function () {\n if (o && i >= o.length) o = void 0;\n return { value: o && o[i++], done: !o };\n }\n };\n throw new TypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\n };" + }; + function createValuesHelper(context, expression, location) { + context.requestEmitHelper(ts.valuesHelper); + return ts.setTextRange(ts.createCall(getUnscopedHelperName("__values"), + /*typeArguments*/ undefined, [expression]), location); + } + ts.createValuesHelper = createValuesHelper; + ts.readHelper = { + name: "typescript:read", + importName: "__read", + scoped: false, + text: "\n var __read = (this && this.__read) || function (o, n) {\n var m = typeof Symbol === \"function\" && o[Symbol.iterator];\n if (!m) return o;\n var i = m.call(o), r, ar = [], e;\n try {\n while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);\n }\n catch (error) { e = { error: error }; }\n finally {\n try {\n if (r && !r.done && (m = i[\"return\"])) m.call(i);\n }\n finally { if (e) throw e.error; }\n }\n return ar;\n };" + }; + function createReadHelper(context, iteratorRecord, count, location) { + context.requestEmitHelper(ts.readHelper); + return ts.setTextRange(ts.createCall(getUnscopedHelperName("__read"), + /*typeArguments*/ undefined, count !== undefined + ? [iteratorRecord, ts.createLiteral(count)] + : [iteratorRecord]), location); + } + ts.createReadHelper = createReadHelper; + ts.spreadHelper = { + name: "typescript:spread", + importName: "__spread", + scoped: false, + dependencies: [ts.readHelper], + text: "\n var __spread = (this && this.__spread) || function () {\n for (var ar = [], i = 0; i < arguments.length; i++) ar = ar.concat(__read(arguments[i]));\n return ar;\n };" + }; + function createSpreadHelper(context, argumentList, location) { + context.requestEmitHelper(ts.spreadHelper); + return ts.setTextRange(ts.createCall(getUnscopedHelperName("__spread"), + /*typeArguments*/ undefined, argumentList), location); + } + ts.createSpreadHelper = createSpreadHelper; + ts.spreadArraysHelper = { + name: "typescript:spreadArrays", + importName: "__spreadArrays", + scoped: false, + text: "\n var __spreadArrays = (this && this.__spreadArrays) || function () {\n for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;\n for (var r = Array(s), k = 0, i = 0; i < il; i++)\n for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)\n r[k] = a[j];\n return r;\n };" + }; + function createSpreadArraysHelper(context, argumentList, location) { + context.requestEmitHelper(ts.spreadArraysHelper); + return ts.setTextRange(ts.createCall(getUnscopedHelperName("__spreadArrays"), + /*typeArguments*/ undefined, argumentList), location); + } + ts.createSpreadArraysHelper = createSpreadArraysHelper; + // Utilities + function createForOfBindingStatement(node, boundValue) { + if (ts.isVariableDeclarationList(node)) { + var firstDeclaration = ts.first(node.declarations); + var updatedDeclaration = ts.updateVariableDeclaration(firstDeclaration, firstDeclaration.name, + /*typeNode*/ undefined, boundValue); + return ts.setTextRange(ts.createVariableStatement( + /*modifiers*/ undefined, ts.updateVariableDeclarationList(node, [updatedDeclaration])), + /*location*/ node); + } + else { + var updatedExpression = ts.setTextRange(ts.createAssignment(node, boundValue), /*location*/ node); + return ts.setTextRange(ts.createStatement(updatedExpression), /*location*/ node); + } + } + ts.createForOfBindingStatement = createForOfBindingStatement; + function insertLeadingStatement(dest, source) { + if (ts.isBlock(dest)) { + return ts.updateBlock(dest, ts.setTextRange(ts.createNodeArray(__spreadArrays([source], dest.statements)), dest.statements)); + } + else { + return ts.createBlock(ts.createNodeArray([dest, source]), /*multiLine*/ true); + } + } + ts.insertLeadingStatement = insertLeadingStatement; + function restoreEnclosingLabel(node, outermostLabeledStatement, afterRestoreLabelCallback) { + if (!outermostLabeledStatement) { + return node; + } + var updated = ts.updateLabel(outermostLabeledStatement, outermostLabeledStatement.label, outermostLabeledStatement.statement.kind === 238 /* LabeledStatement */ + ? restoreEnclosingLabel(node, outermostLabeledStatement.statement) + : node); + if (afterRestoreLabelCallback) { + afterRestoreLabelCallback(outermostLabeledStatement); + } + return updated; + } + ts.restoreEnclosingLabel = restoreEnclosingLabel; + function shouldBeCapturedInTempVariable(node, cacheIdentifiers) { + var target = ts.skipParentheses(node); + switch (target.kind) { + case 75 /* Identifier */: + return cacheIdentifiers; + case 104 /* ThisKeyword */: + case 8 /* NumericLiteral */: + case 9 /* BigIntLiteral */: + case 10 /* StringLiteral */: + return false; + case 192 /* ArrayLiteralExpression */: + var elements = target.elements; + if (elements.length === 0) { + return false; + } + return true; + case 193 /* ObjectLiteralExpression */: + return target.properties.length > 0; + default: + return true; + } + } + function createCallBinding(expression, recordTempVariable, languageVersion, cacheIdentifiers) { + if (cacheIdentifiers === void 0) { cacheIdentifiers = false; } + var callee = skipOuterExpressions(expression, 15 /* All */); + var thisArg; + var target; + if (ts.isSuperProperty(callee)) { + thisArg = ts.createThis(); + target = callee; + } + else if (callee.kind === 102 /* SuperKeyword */) { + thisArg = ts.createThis(); + target = languageVersion < 2 /* ES2015 */ + ? ts.setTextRange(ts.createIdentifier("_super"), callee) + : callee; + } + else if (ts.getEmitFlags(callee) & 4096 /* HelperName */) { + thisArg = ts.createVoidZero(); + target = parenthesizeForAccess(callee); + } + else { + switch (callee.kind) { + case 194 /* PropertyAccessExpression */: { + if (shouldBeCapturedInTempVariable(callee.expression, cacheIdentifiers)) { + // for `a.b()` target is `(_a = a).b` and thisArg is `_a` + thisArg = ts.createTempVariable(recordTempVariable); + target = ts.createPropertyAccess(ts.setTextRange(ts.createAssignment(thisArg, callee.expression), callee.expression), callee.name); + ts.setTextRange(target, callee); + } + else { + thisArg = callee.expression; + target = callee; + } + break; + } + case 195 /* ElementAccessExpression */: { + if (shouldBeCapturedInTempVariable(callee.expression, cacheIdentifiers)) { + // for `a[b]()` target is `(_a = a)[b]` and thisArg is `_a` + thisArg = ts.createTempVariable(recordTempVariable); + target = ts.createElementAccess(ts.setTextRange(ts.createAssignment(thisArg, callee.expression), callee.expression), callee.argumentExpression); + ts.setTextRange(target, callee); + } + else { + thisArg = callee.expression; + target = callee; + } + break; + } + default: { + // for `a()` target is `a` and thisArg is `void 0` + thisArg = ts.createVoidZero(); + target = parenthesizeForAccess(expression); + break; + } + } + } + return { target: target, thisArg: thisArg }; + } + ts.createCallBinding = createCallBinding; + function inlineExpressions(expressions) { + // Avoid deeply nested comma expressions as traversing them during emit can result in "Maximum call + // stack size exceeded" errors. + return expressions.length > 10 + ? ts.createCommaList(expressions) + : ts.reduceLeft(expressions, ts.createComma); + } + ts.inlineExpressions = inlineExpressions; + function createExpressionFromEntityName(node) { + if (ts.isQualifiedName(node)) { + var left = createExpressionFromEntityName(node.left); + var right = ts.getMutableClone(node.right); + return ts.setTextRange(ts.createPropertyAccess(left, right), node); + } + else { + return ts.getMutableClone(node); + } + } + ts.createExpressionFromEntityName = createExpressionFromEntityName; + function createExpressionForPropertyName(memberName) { + if (ts.isIdentifier(memberName)) { + return ts.createLiteral(memberName); + } + else if (ts.isComputedPropertyName(memberName)) { + return ts.getMutableClone(memberName.expression); + } + else { + return ts.getMutableClone(memberName); + } + } + ts.createExpressionForPropertyName = createExpressionForPropertyName; + function createExpressionForObjectLiteralElementLike(node, property, receiver) { + if (property.name && ts.isPrivateIdentifier(property.name)) { + ts.Debug.failBadSyntaxKind(property.name, "Private identifiers are not allowed in object literals."); + } + switch (property.kind) { + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + return createExpressionForAccessorDeclaration(node.properties, property, receiver, !!node.multiLine); + case 281 /* PropertyAssignment */: + return createExpressionForPropertyAssignment(property, receiver); + case 282 /* ShorthandPropertyAssignment */: + return createExpressionForShorthandPropertyAssignment(property, receiver); + case 161 /* MethodDeclaration */: + return createExpressionForMethodDeclaration(property, receiver); + } + } + ts.createExpressionForObjectLiteralElementLike = createExpressionForObjectLiteralElementLike; + function createExpressionForAccessorDeclaration(properties, property, receiver, multiLine) { + var _a = ts.getAllAccessorDeclarations(properties, property), firstAccessor = _a.firstAccessor, getAccessor = _a.getAccessor, setAccessor = _a.setAccessor; + if (property === firstAccessor) { + var properties_7 = []; + if (getAccessor) { + var getterFunction = ts.createFunctionExpression(getAccessor.modifiers, + /*asteriskToken*/ undefined, + /*name*/ undefined, + /*typeParameters*/ undefined, getAccessor.parameters, + /*type*/ undefined, getAccessor.body // TODO: GH#18217 + ); + ts.setTextRange(getterFunction, getAccessor); + ts.setOriginalNode(getterFunction, getAccessor); + var getter = ts.createPropertyAssignment("get", getterFunction); + properties_7.push(getter); + } + if (setAccessor) { + var setterFunction = ts.createFunctionExpression(setAccessor.modifiers, + /*asteriskToken*/ undefined, + /*name*/ undefined, + /*typeParameters*/ undefined, setAccessor.parameters, + /*type*/ undefined, setAccessor.body // TODO: GH#18217 + ); + ts.setTextRange(setterFunction, setAccessor); + ts.setOriginalNode(setterFunction, setAccessor); + var setter = ts.createPropertyAssignment("set", setterFunction); + properties_7.push(setter); + } + properties_7.push(ts.createPropertyAssignment("enumerable", getAccessor || setAccessor ? ts.createFalse() : ts.createTrue())); + properties_7.push(ts.createPropertyAssignment("configurable", ts.createTrue())); + var expression = ts.setTextRange(ts.createCall(ts.createPropertyAccess(ts.createIdentifier("Object"), "defineProperty"), + /*typeArguments*/ undefined, [ + receiver, + createExpressionForPropertyName(property.name), + ts.createObjectLiteral(properties_7, multiLine) + ]), + /*location*/ firstAccessor); + return ts.aggregateTransformFlags(expression); + } + return undefined; + } + function createExpressionForPropertyAssignment(property, receiver) { + return ts.aggregateTransformFlags(ts.setOriginalNode(ts.setTextRange(ts.createAssignment(createMemberAccessForPropertyName(receiver, property.name, /*location*/ property.name), property.initializer), property), property)); + } + function createExpressionForShorthandPropertyAssignment(property, receiver) { + return ts.aggregateTransformFlags(ts.setOriginalNode(ts.setTextRange(ts.createAssignment(createMemberAccessForPropertyName(receiver, property.name, /*location*/ property.name), ts.getSynthesizedClone(property.name)), + /*location*/ property), + /*original*/ property)); + } + function createExpressionForMethodDeclaration(method, receiver) { + return ts.aggregateTransformFlags(ts.setOriginalNode(ts.setTextRange(ts.createAssignment(createMemberAccessForPropertyName(receiver, method.name, /*location*/ method.name), ts.setOriginalNode(ts.setTextRange(ts.createFunctionExpression(method.modifiers, method.asteriskToken, + /*name*/ undefined, + /*typeParameters*/ undefined, method.parameters, + /*type*/ undefined, method.body // TODO: GH#18217 + ), + /*location*/ method), + /*original*/ method)), + /*location*/ method), + /*original*/ method)); + } + /** + * Gets the internal name of a declaration. This is primarily used for declarations that can be + * referred to by name in the body of an ES5 class function body. An internal name will *never* + * be prefixed with an module or namespace export modifier like "exports." when emitted as an + * expression. An internal name will also *never* be renamed due to a collision with a block + * scoped variable. + * + * @param node The declaration. + * @param allowComments A value indicating whether comments may be emitted for the name. + * @param allowSourceMaps A value indicating whether source maps may be emitted for the name. + */ + function getInternalName(node, allowComments, allowSourceMaps) { + return getName(node, allowComments, allowSourceMaps, 16384 /* LocalName */ | 32768 /* InternalName */); + } + ts.getInternalName = getInternalName; + /** + * Gets whether an identifier should only be referred to by its internal name. + */ + function isInternalName(node) { + return (ts.getEmitFlags(node) & 32768 /* InternalName */) !== 0; + } + ts.isInternalName = isInternalName; + /** + * Gets the local name of a declaration. This is primarily used for declarations that can be + * referred to by name in the declaration's immediate scope (classes, enums, namespaces). A + * local name will *never* be prefixed with an module or namespace export modifier like + * "exports." when emitted as an expression. + * + * @param node The declaration. + * @param allowComments A value indicating whether comments may be emitted for the name. + * @param allowSourceMaps A value indicating whether source maps may be emitted for the name. + */ + function getLocalName(node, allowComments, allowSourceMaps) { + return getName(node, allowComments, allowSourceMaps, 16384 /* LocalName */); + } + ts.getLocalName = getLocalName; + /** + * Gets whether an identifier should only be referred to by its local name. + */ + function isLocalName(node) { + return (ts.getEmitFlags(node) & 16384 /* LocalName */) !== 0; + } + ts.isLocalName = isLocalName; + /** + * Gets the export name of a declaration. This is primarily used for declarations that can be + * referred to by name in the declaration's immediate scope (classes, enums, namespaces). An + * export name will *always* be prefixed with an module or namespace export modifier like + * `"exports."` when emitted as an expression if the name points to an exported symbol. + * + * @param node The declaration. + * @param allowComments A value indicating whether comments may be emitted for the name. + * @param allowSourceMaps A value indicating whether source maps may be emitted for the name. + */ + function getExportName(node, allowComments, allowSourceMaps) { + return getName(node, allowComments, allowSourceMaps, 8192 /* ExportName */); + } + ts.getExportName = getExportName; + /** + * Gets whether an identifier should only be referred to by its export representation if the + * name points to an exported symbol. + */ + function isExportName(node) { + return (ts.getEmitFlags(node) & 8192 /* ExportName */) !== 0; + } + ts.isExportName = isExportName; + /** + * Gets the name of a declaration for use in declarations. + * + * @param node The declaration. + * @param allowComments A value indicating whether comments may be emitted for the name. + * @param allowSourceMaps A value indicating whether source maps may be emitted for the name. + */ + function getDeclarationName(node, allowComments, allowSourceMaps) { + return getName(node, allowComments, allowSourceMaps); + } + ts.getDeclarationName = getDeclarationName; + function getName(node, allowComments, allowSourceMaps, emitFlags) { + if (emitFlags === void 0) { emitFlags = 0; } + var nodeName = ts.getNameOfDeclaration(node); + if (nodeName && ts.isIdentifier(nodeName) && !ts.isGeneratedIdentifier(nodeName)) { + var name = ts.getMutableClone(nodeName); + emitFlags |= ts.getEmitFlags(nodeName); + if (!allowSourceMaps) + emitFlags |= 48 /* NoSourceMap */; + if (!allowComments) + emitFlags |= 1536 /* NoComments */; + if (emitFlags) + ts.setEmitFlags(name, emitFlags); + return name; + } + return ts.getGeneratedNameForNode(node); + } + /** + * Gets the exported name of a declaration for use in expressions. + * + * An exported name will *always* be prefixed with an module or namespace export modifier like + * "exports." if the name points to an exported symbol. + * + * @param ns The namespace identifier. + * @param node The declaration. + * @param allowComments A value indicating whether comments may be emitted for the name. + * @param allowSourceMaps A value indicating whether source maps may be emitted for the name. + */ + function getExternalModuleOrNamespaceExportName(ns, node, allowComments, allowSourceMaps) { + if (ns && ts.hasModifier(node, 1 /* Export */)) { + return getNamespaceMemberName(ns, getName(node), allowComments, allowSourceMaps); + } + return getExportName(node, allowComments, allowSourceMaps); + } + ts.getExternalModuleOrNamespaceExportName = getExternalModuleOrNamespaceExportName; + /** + * Gets a namespace-qualified name for use in expressions. + * + * @param ns The namespace identifier. + * @param name The name. + * @param allowComments A value indicating whether comments may be emitted for the name. + * @param allowSourceMaps A value indicating whether source maps may be emitted for the name. + */ + function getNamespaceMemberName(ns, name, allowComments, allowSourceMaps) { + var qualifiedName = ts.createPropertyAccess(ns, ts.nodeIsSynthesized(name) ? name : ts.getSynthesizedClone(name)); + ts.setTextRange(qualifiedName, name); + var emitFlags = 0; + if (!allowSourceMaps) + emitFlags |= 48 /* NoSourceMap */; + if (!allowComments) + emitFlags |= 1536 /* NoComments */; + if (emitFlags) + ts.setEmitFlags(qualifiedName, emitFlags); + return qualifiedName; + } + ts.getNamespaceMemberName = getNamespaceMemberName; + function convertToFunctionBody(node, multiLine) { + return ts.isBlock(node) ? node : ts.setTextRange(ts.createBlock([ts.setTextRange(ts.createReturn(node), node)], multiLine), node); + } + ts.convertToFunctionBody = convertToFunctionBody; + function convertFunctionDeclarationToExpression(node) { + if (!node.body) + return ts.Debug.fail(); + var updated = ts.createFunctionExpression(node.modifiers, node.asteriskToken, node.name, node.typeParameters, node.parameters, node.type, node.body); + ts.setOriginalNode(updated, node); + ts.setTextRange(updated, node); + if (ts.getStartsOnNewLine(node)) { + ts.setStartsOnNewLine(updated, /*newLine*/ true); + } + ts.aggregateTransformFlags(updated); + return updated; + } + ts.convertFunctionDeclarationToExpression = convertFunctionDeclarationToExpression; + function isUseStrictPrologue(node) { + return ts.isStringLiteral(node.expression) && node.expression.text === "use strict"; + } + /** + * Add any necessary prologue-directives into target statement-array. + * The function needs to be called during each transformation step. + * This function needs to be called whenever we transform the statement + * list of a source file, namespace, or function-like body. + * + * @param target: result statements array + * @param source: origin statements array + * @param ensureUseStrict: boolean determining whether the function need to add prologue-directives + * @param visitor: Optional callback used to visit any custom prologue directives. + */ + function addPrologue(target, source, ensureUseStrict, visitor) { + var offset = addStandardPrologue(target, source, ensureUseStrict); + return addCustomPrologue(target, source, offset, visitor); + } + ts.addPrologue = addPrologue; + /** + * Add just the standard (string-expression) prologue-directives into target statement-array. + * The function needs to be called during each transformation step. + * This function needs to be called whenever we transform the statement + * list of a source file, namespace, or function-like body. + */ + function addStandardPrologue(target, source, ensureUseStrict) { + ts.Debug.assert(target.length === 0, "Prologue directives should be at the first statement in the target statements array"); + var foundUseStrict = false; + var statementOffset = 0; + var numStatements = source.length; + while (statementOffset < numStatements) { + var statement = source[statementOffset]; + if (ts.isPrologueDirective(statement)) { + if (isUseStrictPrologue(statement)) { + foundUseStrict = true; + } + target.push(statement); + } + else { + break; + } + statementOffset++; + } + if (ensureUseStrict && !foundUseStrict) { + target.push(startOnNewLine(ts.createStatement(ts.createLiteral("use strict")))); + } + return statementOffset; + } + ts.addStandardPrologue = addStandardPrologue; + function addCustomPrologue(target, source, statementOffset, visitor, filter) { + if (filter === void 0) { filter = ts.returnTrue; } + var numStatements = source.length; + while (statementOffset !== undefined && statementOffset < numStatements) { + var statement = source[statementOffset]; + if (ts.getEmitFlags(statement) & 1048576 /* CustomPrologue */ && filter(statement)) { + ts.append(target, visitor ? ts.visitNode(statement, visitor, ts.isStatement) : statement); + } + else { + break; + } + statementOffset++; + } + return statementOffset; + } + ts.addCustomPrologue = addCustomPrologue; + function findUseStrictPrologue(statements) { + for (var _i = 0, statements_4 = statements; _i < statements_4.length; _i++) { + var statement = statements_4[_i]; + if (ts.isPrologueDirective(statement)) { + if (isUseStrictPrologue(statement)) { + return statement; + } + } + else { + break; + } + } + return undefined; + } + ts.findUseStrictPrologue = findUseStrictPrologue; + function startsWithUseStrict(statements) { + var firstStatement = ts.firstOrUndefined(statements); + return firstStatement !== undefined + && ts.isPrologueDirective(firstStatement) + && isUseStrictPrologue(firstStatement); + } + ts.startsWithUseStrict = startsWithUseStrict; + /** + * Ensures "use strict" directive is added + * + * @param statements An array of statements + */ + function ensureUseStrict(statements) { + var foundUseStrict = findUseStrictPrologue(statements); + if (!foundUseStrict) { + return ts.setTextRange(ts.createNodeArray(__spreadArrays([ + startOnNewLine(ts.createStatement(ts.createLiteral("use strict"))) + ], statements)), statements); + } + return statements; + } + ts.ensureUseStrict = ensureUseStrict; + /** + * Wraps the operand to a BinaryExpression in parentheses if they are needed to preserve the intended + * order of operations. + * + * @param binaryOperator The operator for the BinaryExpression. + * @param operand The operand for the BinaryExpression. + * @param isLeftSideOfBinary A value indicating whether the operand is the left side of the + * BinaryExpression. + */ + function parenthesizeBinaryOperand(binaryOperator, operand, isLeftSideOfBinary, leftOperand) { + var skipped = ts.skipPartiallyEmittedExpressions(operand); + // If the resulting expression is already parenthesized, we do not need to do any further processing. + if (skipped.kind === 200 /* ParenthesizedExpression */) { + return operand; + } + return binaryOperandNeedsParentheses(binaryOperator, operand, isLeftSideOfBinary, leftOperand) + ? ts.createParen(operand) + : operand; + } + ts.parenthesizeBinaryOperand = parenthesizeBinaryOperand; + /** + * Determines whether the operand to a BinaryExpression needs to be parenthesized. + * + * @param binaryOperator The operator for the BinaryExpression. + * @param operand The operand for the BinaryExpression. + * @param isLeftSideOfBinary A value indicating whether the operand is the left side of the + * BinaryExpression. + */ + function binaryOperandNeedsParentheses(binaryOperator, operand, isLeftSideOfBinary, leftOperand) { + // If the operand has lower precedence, then it needs to be parenthesized to preserve the + // intent of the expression. For example, if the operand is `a + b` and the operator is + // `*`, then we need to parenthesize the operand to preserve the intended order of + // operations: `(a + b) * x`. + // + // If the operand has higher precedence, then it does not need to be parenthesized. For + // example, if the operand is `a * b` and the operator is `+`, then we do not need to + // parenthesize to preserve the intended order of operations: `a * b + x`. + // + // If the operand has the same precedence, then we need to check the associativity of + // the operator based on whether this is the left or right operand of the expression. + // + // For example, if `a / d` is on the right of operator `*`, we need to parenthesize + // to preserve the intended order of operations: `x * (a / d)` + // + // If `a ** d` is on the left of operator `**`, we need to parenthesize to preserve + // the intended order of operations: `(a ** b) ** c` + var binaryOperatorPrecedence = ts.getOperatorPrecedence(209 /* BinaryExpression */, binaryOperator); + var binaryOperatorAssociativity = ts.getOperatorAssociativity(209 /* BinaryExpression */, binaryOperator); + var emittedOperand = ts.skipPartiallyEmittedExpressions(operand); + if (!isLeftSideOfBinary && operand.kind === 202 /* ArrowFunction */ && binaryOperatorPrecedence > 3) { + // We need to parenthesize arrow functions on the right side to avoid it being + // parsed as parenthesized expression: `a && (() => {})` + return true; + } + var operandPrecedence = ts.getExpressionPrecedence(emittedOperand); + switch (ts.compareValues(operandPrecedence, binaryOperatorPrecedence)) { + case -1 /* LessThan */: + // If the operand is the right side of a right-associative binary operation + // and is a yield expression, then we do not need parentheses. + if (!isLeftSideOfBinary + && binaryOperatorAssociativity === 1 /* Right */ + && operand.kind === 212 /* YieldExpression */) { + return false; + } + return true; + case 1 /* GreaterThan */: + return false; + case 0 /* EqualTo */: + if (isLeftSideOfBinary) { + // No need to parenthesize the left operand when the binary operator is + // left associative: + // (a*b)/x -> a*b/x + // (a**b)/x -> a**b/x + // + // Parentheses are needed for the left operand when the binary operator is + // right associative: + // (a/b)**x -> (a/b)**x + // (a**b)**x -> (a**b)**x + return binaryOperatorAssociativity === 1 /* Right */; + } + else { + if (ts.isBinaryExpression(emittedOperand) + && emittedOperand.operatorToken.kind === binaryOperator) { + // No need to parenthesize the right operand when the binary operator and + // operand are the same and one of the following: + // x*(a*b) => x*a*b + // x|(a|b) => x|a|b + // x&(a&b) => x&a&b + // x^(a^b) => x^a^b + if (operatorHasAssociativeProperty(binaryOperator)) { + return false; + } + // No need to parenthesize the right operand when the binary operator + // is plus (+) if both the left and right operands consist solely of either + // literals of the same kind or binary plus (+) expressions for literals of + // the same kind (recursively). + // "a"+(1+2) => "a"+(1+2) + // "a"+("b"+"c") => "a"+"b"+"c" + if (binaryOperator === 39 /* PlusToken */) { + var leftKind = leftOperand ? getLiteralKindOfBinaryPlusOperand(leftOperand) : 0 /* Unknown */; + if (ts.isLiteralKind(leftKind) && leftKind === getLiteralKindOfBinaryPlusOperand(emittedOperand)) { + return false; + } + } + } + // No need to parenthesize the right operand when the operand is right + // associative: + // x/(a**b) -> x/a**b + // x**(a**b) -> x**a**b + // + // Parentheses are needed for the right operand when the operand is left + // associative: + // x/(a*b) -> x/(a*b) + // x**(a/b) -> x**(a/b) + var operandAssociativity = ts.getExpressionAssociativity(emittedOperand); + return operandAssociativity === 0 /* Left */; + } + } + } + /** + * Determines whether a binary operator is mathematically associative. + * + * @param binaryOperator The binary operator. + */ + function operatorHasAssociativeProperty(binaryOperator) { + // The following operators are associative in JavaScript: + // (a*b)*c -> a*(b*c) -> a*b*c + // (a|b)|c -> a|(b|c) -> a|b|c + // (a&b)&c -> a&(b&c) -> a&b&c + // (a^b)^c -> a^(b^c) -> a^b^c + // + // While addition is associative in mathematics, JavaScript's `+` is not + // guaranteed to be associative as it is overloaded with string concatenation. + return binaryOperator === 41 /* AsteriskToken */ + || binaryOperator === 51 /* BarToken */ + || binaryOperator === 50 /* AmpersandToken */ + || binaryOperator === 52 /* CaretToken */; + } + /** + * This function determines whether an expression consists of a homogeneous set of + * literal expressions or binary plus expressions that all share the same literal kind. + * It is used to determine whether the right-hand operand of a binary plus expression can be + * emitted without parentheses. + */ + function getLiteralKindOfBinaryPlusOperand(node) { + node = ts.skipPartiallyEmittedExpressions(node); + if (ts.isLiteralKind(node.kind)) { + return node.kind; + } + if (node.kind === 209 /* BinaryExpression */ && node.operatorToken.kind === 39 /* PlusToken */) { + if (node.cachedLiteralKind !== undefined) { + return node.cachedLiteralKind; + } + var leftKind = getLiteralKindOfBinaryPlusOperand(node.left); + var literalKind = ts.isLiteralKind(leftKind) && leftKind === getLiteralKindOfBinaryPlusOperand(node.right) ? leftKind : + 0 /* Unknown */; + node.cachedLiteralKind = literalKind; + return literalKind; + } + return 0 /* Unknown */; + } + function parenthesizeForConditionalHead(condition) { + var conditionalPrecedence = ts.getOperatorPrecedence(210 /* ConditionalExpression */, 57 /* QuestionToken */); + var emittedCondition = ts.skipPartiallyEmittedExpressions(condition); + var conditionPrecedence = ts.getExpressionPrecedence(emittedCondition); + if (ts.compareValues(conditionPrecedence, conditionalPrecedence) !== 1 /* GreaterThan */) { + return ts.createParen(condition); + } + return condition; + } + ts.parenthesizeForConditionalHead = parenthesizeForConditionalHead; + function parenthesizeSubexpressionOfConditionalExpression(e) { + // per ES grammar both 'whenTrue' and 'whenFalse' parts of conditional expression are assignment expressions + // so in case when comma expression is introduced as a part of previous transformations + // if should be wrapped in parens since comma operator has the lowest precedence + var emittedExpression = ts.skipPartiallyEmittedExpressions(e); + return isCommaSequence(emittedExpression) + ? ts.createParen(e) + : e; + } + ts.parenthesizeSubexpressionOfConditionalExpression = parenthesizeSubexpressionOfConditionalExpression; + /** + * [Per the spec](https://tc39.github.io/ecma262/#prod-ExportDeclaration), `export default` accepts _AssigmentExpression_ but + * has a lookahead restriction for `function`, `async function`, and `class`. + * + * Basically, that means we need to parenthesize in the following cases: + * + * - BinaryExpression of CommaToken + * - CommaList (synthetic list of multiple comma expressions) + * - FunctionExpression + * - ClassExpression + */ + function parenthesizeDefaultExpression(e) { + var check = ts.skipPartiallyEmittedExpressions(e); + var needsParens = isCommaSequence(check); + if (!needsParens) { + switch (getLeftmostExpression(check, /*stopAtCallExpression*/ false).kind) { + case 214 /* ClassExpression */: + case 201 /* FunctionExpression */: + needsParens = true; + } + } + return needsParens ? ts.createParen(e) : e; + } + ts.parenthesizeDefaultExpression = parenthesizeDefaultExpression; + /** + * Wraps an expression in parentheses if it is needed in order to use the expression + * as the expression of a NewExpression node. + * + * @param expression The Expression node. + */ + function parenthesizeForNew(expression) { + var leftmostExpr = getLeftmostExpression(expression, /*stopAtCallExpressions*/ true); + switch (leftmostExpr.kind) { + case 196 /* CallExpression */: + return ts.createParen(expression); + case 197 /* NewExpression */: + return !leftmostExpr.arguments + ? ts.createParen(expression) + : expression; + } + return parenthesizeForAccess(expression); + } + ts.parenthesizeForNew = parenthesizeForNew; + /** + * Wraps an expression in parentheses if it is needed in order to use the expression for + * property or element access. + * + * @param expr The expression node. + */ + function parenthesizeForAccess(expression) { + // isLeftHandSideExpression is almost the correct criterion for when it is not necessary + // to parenthesize the expression before a dot. The known exception is: + // + // NewExpression: + // new C.x -> not the same as (new C).x + // + var emittedExpression = ts.skipPartiallyEmittedExpressions(expression); + if (ts.isLeftHandSideExpression(emittedExpression) + && (emittedExpression.kind !== 197 /* NewExpression */ || emittedExpression.arguments)) { + return expression; + } + return ts.setTextRange(ts.createParen(expression), expression); + } + ts.parenthesizeForAccess = parenthesizeForAccess; + function parenthesizePostfixOperand(operand) { + return ts.isLeftHandSideExpression(operand) + ? operand + : ts.setTextRange(ts.createParen(operand), operand); + } + ts.parenthesizePostfixOperand = parenthesizePostfixOperand; + function parenthesizePrefixOperand(operand) { + return ts.isUnaryExpression(operand) + ? operand + : ts.setTextRange(ts.createParen(operand), operand); + } + ts.parenthesizePrefixOperand = parenthesizePrefixOperand; + function parenthesizeListElements(elements) { + var result; + for (var i = 0; i < elements.length; i++) { + var element = parenthesizeExpressionForList(elements[i]); + if (result !== undefined || element !== elements[i]) { + if (result === undefined) { + result = elements.slice(0, i); + } + result.push(element); + } + } + if (result !== undefined) { + return ts.setTextRange(ts.createNodeArray(result, elements.hasTrailingComma), elements); + } + return elements; + } + ts.parenthesizeListElements = parenthesizeListElements; + function parenthesizeExpressionForList(expression) { + var emittedExpression = ts.skipPartiallyEmittedExpressions(expression); + var expressionPrecedence = ts.getExpressionPrecedence(emittedExpression); + var commaPrecedence = ts.getOperatorPrecedence(209 /* BinaryExpression */, 27 /* CommaToken */); + return expressionPrecedence > commaPrecedence + ? expression + : ts.setTextRange(ts.createParen(expression), expression); + } + ts.parenthesizeExpressionForList = parenthesizeExpressionForList; + function parenthesizeExpressionForExpressionStatement(expression) { + var emittedExpression = ts.skipPartiallyEmittedExpressions(expression); + if (ts.isCallExpression(emittedExpression)) { + var callee = emittedExpression.expression; + var kind = ts.skipPartiallyEmittedExpressions(callee).kind; + if (kind === 201 /* FunctionExpression */ || kind === 202 /* ArrowFunction */) { + var mutableCall = ts.getMutableClone(emittedExpression); + mutableCall.expression = ts.setTextRange(ts.createParen(callee), callee); + return recreateOuterExpressions(expression, mutableCall, 8 /* PartiallyEmittedExpressions */); + } + } + var leftmostExpressionKind = getLeftmostExpression(emittedExpression, /*stopAtCallExpressions*/ false).kind; + if (leftmostExpressionKind === 193 /* ObjectLiteralExpression */ || leftmostExpressionKind === 201 /* FunctionExpression */) { + return ts.setTextRange(ts.createParen(expression), expression); + } + return expression; + } + ts.parenthesizeExpressionForExpressionStatement = parenthesizeExpressionForExpressionStatement; + function parenthesizeConditionalTypeMember(member) { + return member.kind === 180 /* ConditionalType */ ? ts.createParenthesizedType(member) : member; + } + ts.parenthesizeConditionalTypeMember = parenthesizeConditionalTypeMember; + function parenthesizeElementTypeMember(member) { + switch (member.kind) { + case 178 /* UnionType */: + case 179 /* IntersectionType */: + case 170 /* FunctionType */: + case 171 /* ConstructorType */: + return ts.createParenthesizedType(member); + } + return parenthesizeConditionalTypeMember(member); + } + ts.parenthesizeElementTypeMember = parenthesizeElementTypeMember; + function parenthesizeArrayTypeMember(member) { + switch (member.kind) { + case 172 /* TypeQuery */: + case 184 /* TypeOperator */: + case 181 /* InferType */: + return ts.createParenthesizedType(member); + } + return parenthesizeElementTypeMember(member); + } + ts.parenthesizeArrayTypeMember = parenthesizeArrayTypeMember; + function parenthesizeElementTypeMembers(members) { + return ts.createNodeArray(ts.sameMap(members, parenthesizeElementTypeMember)); + } + ts.parenthesizeElementTypeMembers = parenthesizeElementTypeMembers; + function parenthesizeTypeParameters(typeParameters) { + if (ts.some(typeParameters)) { + var params = []; + for (var i = 0; i < typeParameters.length; ++i) { + var entry = typeParameters[i]; + params.push(i === 0 && ts.isFunctionOrConstructorTypeNode(entry) && entry.typeParameters ? + ts.createParenthesizedType(entry) : + entry); + } + return ts.createNodeArray(params); + } + } + ts.parenthesizeTypeParameters = parenthesizeTypeParameters; + function getLeftmostExpression(node, stopAtCallExpressions) { + while (true) { + switch (node.kind) { + case 208 /* PostfixUnaryExpression */: + node = node.operand; + continue; + case 209 /* BinaryExpression */: + node = node.left; + continue; + case 210 /* ConditionalExpression */: + node = node.condition; + continue; + case 198 /* TaggedTemplateExpression */: + node = node.tag; + continue; + case 196 /* CallExpression */: + if (stopAtCallExpressions) { + return node; + } + // falls through + case 217 /* AsExpression */: + case 195 /* ElementAccessExpression */: + case 194 /* PropertyAccessExpression */: + case 218 /* NonNullExpression */: + case 326 /* PartiallyEmittedExpression */: + node = node.expression; + continue; + } + return node; + } + } + ts.getLeftmostExpression = getLeftmostExpression; + function parenthesizeConciseBody(body) { + if (!ts.isBlock(body) && (isCommaSequence(body) || getLeftmostExpression(body, /*stopAtCallExpressions*/ false).kind === 193 /* ObjectLiteralExpression */)) { + return ts.setTextRange(ts.createParen(body), body); + } + return body; + } + ts.parenthesizeConciseBody = parenthesizeConciseBody; + function isCommaSequence(node) { + return node.kind === 209 /* BinaryExpression */ && node.operatorToken.kind === 27 /* CommaToken */ || + node.kind === 327 /* CommaListExpression */; + } + ts.isCommaSequence = isCommaSequence; + var OuterExpressionKinds; + (function (OuterExpressionKinds) { + OuterExpressionKinds[OuterExpressionKinds["Parentheses"] = 1] = "Parentheses"; + OuterExpressionKinds[OuterExpressionKinds["TypeAssertions"] = 2] = "TypeAssertions"; + OuterExpressionKinds[OuterExpressionKinds["NonNullAssertions"] = 4] = "NonNullAssertions"; + OuterExpressionKinds[OuterExpressionKinds["PartiallyEmittedExpressions"] = 8] = "PartiallyEmittedExpressions"; + OuterExpressionKinds[OuterExpressionKinds["Assertions"] = 6] = "Assertions"; + OuterExpressionKinds[OuterExpressionKinds["All"] = 15] = "All"; + })(OuterExpressionKinds = ts.OuterExpressionKinds || (ts.OuterExpressionKinds = {})); + function isOuterExpression(node, kinds) { + if (kinds === void 0) { kinds = 15 /* All */; } + switch (node.kind) { + case 200 /* ParenthesizedExpression */: + return (kinds & 1 /* Parentheses */) !== 0; + case 199 /* TypeAssertionExpression */: + case 217 /* AsExpression */: + return (kinds & 2 /* TypeAssertions */) !== 0; + case 218 /* NonNullExpression */: + return (kinds & 4 /* NonNullAssertions */) !== 0; + case 326 /* PartiallyEmittedExpression */: + return (kinds & 8 /* PartiallyEmittedExpressions */) !== 0; + } + return false; + } + ts.isOuterExpression = isOuterExpression; + function skipOuterExpressions(node, kinds) { + if (kinds === void 0) { kinds = 15 /* All */; } + while (isOuterExpression(node, kinds)) { + node = node.expression; + } + return node; + } + ts.skipOuterExpressions = skipOuterExpressions; + function skipAssertions(node) { + return skipOuterExpressions(node, 6 /* Assertions */); + } + ts.skipAssertions = skipAssertions; + function updateOuterExpression(outerExpression, expression) { + switch (outerExpression.kind) { + case 200 /* ParenthesizedExpression */: return ts.updateParen(outerExpression, expression); + case 199 /* TypeAssertionExpression */: return ts.updateTypeAssertion(outerExpression, outerExpression.type, expression); + case 217 /* AsExpression */: return ts.updateAsExpression(outerExpression, expression, outerExpression.type); + case 218 /* NonNullExpression */: return ts.updateNonNullExpression(outerExpression, expression); + case 326 /* PartiallyEmittedExpression */: return ts.updatePartiallyEmittedExpression(outerExpression, expression); + } + } + /** + * Determines whether a node is a parenthesized expression that can be ignored when recreating outer expressions. + * + * A parenthesized expression can be ignored when all of the following are true: + * + * - It's `pos` and `end` are not -1 + * - It does not have a custom source map range + * - It does not have a custom comment range + * - It does not have synthetic leading or trailing comments + * + * If an outermost parenthesized expression is ignored, but the containing expression requires a parentheses around + * the expression to maintain precedence, a new parenthesized expression should be created automatically when + * the containing expression is created/updated. + */ + function isIgnorableParen(node) { + return node.kind === 200 /* ParenthesizedExpression */ + && ts.nodeIsSynthesized(node) + && ts.nodeIsSynthesized(ts.getSourceMapRange(node)) + && ts.nodeIsSynthesized(ts.getCommentRange(node)) + && !ts.some(ts.getSyntheticLeadingComments(node)) + && !ts.some(ts.getSyntheticTrailingComments(node)); + } + function recreateOuterExpressions(outerExpression, innerExpression, kinds) { + if (kinds === void 0) { kinds = 15 /* All */; } + if (outerExpression && isOuterExpression(outerExpression, kinds) && !isIgnorableParen(outerExpression)) { + return updateOuterExpression(outerExpression, recreateOuterExpressions(outerExpression.expression, innerExpression)); + } + return innerExpression; + } + ts.recreateOuterExpressions = recreateOuterExpressions; + function startOnNewLine(node) { + return ts.setStartsOnNewLine(node, /*newLine*/ true); + } + ts.startOnNewLine = startOnNewLine; + function getExternalHelpersModuleName(node) { + var parseNode = ts.getOriginalNode(node, ts.isSourceFile); + var emitNode = parseNode && parseNode.emitNode; + return emitNode && emitNode.externalHelpersModuleName; + } + ts.getExternalHelpersModuleName = getExternalHelpersModuleName; + function hasRecordedExternalHelpers(sourceFile) { + var parseNode = ts.getOriginalNode(sourceFile, ts.isSourceFile); + var emitNode = parseNode && parseNode.emitNode; + return !!emitNode && (!!emitNode.externalHelpersModuleName || !!emitNode.externalHelpers); + } + ts.hasRecordedExternalHelpers = hasRecordedExternalHelpers; + function createExternalHelpersImportDeclarationIfNeeded(sourceFile, compilerOptions, hasExportStarsToExportValues, hasImportStar, hasImportDefault) { + if (compilerOptions.importHelpers && ts.isEffectiveExternalModule(sourceFile, compilerOptions)) { + var namedBindings = void 0; + var moduleKind = ts.getEmitModuleKind(compilerOptions); + if (moduleKind >= ts.ModuleKind.ES2015 && moduleKind <= ts.ModuleKind.ESNext) { + // use named imports + var helpers = ts.getEmitHelpers(sourceFile); + if (helpers) { + var helperNames = []; + for (var _i = 0, helpers_2 = helpers; _i < helpers_2.length; _i++) { + var helper = helpers_2[_i]; + if (!helper.scoped) { + var importName = helper.importName; + if (importName) { + ts.pushIfUnique(helperNames, importName); + } + } + } + if (ts.some(helperNames)) { + helperNames.sort(ts.compareStringsCaseSensitive); + // Alias the imports if the names are used somewhere in the file. + // NOTE: We don't need to care about global import collisions as this is a module. + namedBindings = ts.createNamedImports(ts.map(helperNames, function (name) { return ts.isFileLevelUniqueName(sourceFile, name) + ? ts.createImportSpecifier(/*propertyName*/ undefined, ts.createIdentifier(name)) + : ts.createImportSpecifier(ts.createIdentifier(name), getUnscopedHelperName(name)); })); + var parseNode = ts.getOriginalNode(sourceFile, ts.isSourceFile); + var emitNode = ts.getOrCreateEmitNode(parseNode); + emitNode.externalHelpers = true; + } + } + } + else { + // use a namespace import + var externalHelpersModuleName = getOrCreateExternalHelpersModuleNameIfNeeded(sourceFile, compilerOptions, hasExportStarsToExportValues, hasImportStar || hasImportDefault); + if (externalHelpersModuleName) { + namedBindings = ts.createNamespaceImport(externalHelpersModuleName); + } + } + if (namedBindings) { + var externalHelpersImportDeclaration = ts.createImportDeclaration( + /*decorators*/ undefined, + /*modifiers*/ undefined, ts.createImportClause(/*name*/ undefined, namedBindings), ts.createLiteral(ts.externalHelpersModuleNameText)); + ts.addEmitFlags(externalHelpersImportDeclaration, 67108864 /* NeverApplyImportHelper */); + return externalHelpersImportDeclaration; + } + } + } + ts.createExternalHelpersImportDeclarationIfNeeded = createExternalHelpersImportDeclarationIfNeeded; + function getOrCreateExternalHelpersModuleNameIfNeeded(node, compilerOptions, hasExportStarsToExportValues, hasImportStarOrImportDefault) { + if (compilerOptions.importHelpers && ts.isEffectiveExternalModule(node, compilerOptions)) { + var externalHelpersModuleName = getExternalHelpersModuleName(node); + if (externalHelpersModuleName) { + return externalHelpersModuleName; + } + var moduleKind = ts.getEmitModuleKind(compilerOptions); + var create = (hasExportStarsToExportValues || (compilerOptions.esModuleInterop && hasImportStarOrImportDefault)) + && moduleKind !== ts.ModuleKind.System + && moduleKind < ts.ModuleKind.ES2015; + if (!create) { + var helpers = ts.getEmitHelpers(node); + if (helpers) { + for (var _i = 0, helpers_3 = helpers; _i < helpers_3.length; _i++) { + var helper = helpers_3[_i]; + if (!helper.scoped) { + create = true; + break; + } + } + } + } + if (create) { + var parseNode = ts.getOriginalNode(node, ts.isSourceFile); + var emitNode = ts.getOrCreateEmitNode(parseNode); + return emitNode.externalHelpersModuleName || (emitNode.externalHelpersModuleName = ts.createUniqueName(ts.externalHelpersModuleNameText)); + } + } + } + ts.getOrCreateExternalHelpersModuleNameIfNeeded = getOrCreateExternalHelpersModuleNameIfNeeded; + /** + * Get the name of that target module from an import or export declaration + */ + function getLocalNameForExternalImport(node, sourceFile) { + var namespaceDeclaration = ts.getNamespaceDeclarationNode(node); + if (namespaceDeclaration && !ts.isDefaultImport(node)) { + var name = namespaceDeclaration.name; + return ts.isGeneratedIdentifier(name) ? name : ts.createIdentifier(ts.getSourceTextOfNodeFromSourceFile(sourceFile, name) || ts.idText(name)); + } + if (node.kind === 254 /* ImportDeclaration */ && node.importClause) { + return ts.getGeneratedNameForNode(node); + } + if (node.kind === 260 /* ExportDeclaration */ && node.moduleSpecifier) { + return ts.getGeneratedNameForNode(node); + } + return undefined; + } + ts.getLocalNameForExternalImport = getLocalNameForExternalImport; + /** + * Get the name of a target module from an import/export declaration as should be written in the emitted output. + * The emitted output name can be different from the input if: + * 1. The module has a /// + * 2. --out or --outFile is used, making the name relative to the rootDir + * 3- The containing SourceFile has an entry in renamedDependencies for the import as requested by some module loaders (e.g. System). + * Otherwise, a new StringLiteral node representing the module name will be returned. + */ + function getExternalModuleNameLiteral(importNode, sourceFile, host, resolver, compilerOptions) { + var moduleName = ts.getExternalModuleName(importNode); // TODO: GH#18217 + if (moduleName.kind === 10 /* StringLiteral */) { + return tryGetModuleNameFromDeclaration(importNode, host, resolver, compilerOptions) + || tryRenameExternalModule(moduleName, sourceFile) + || ts.getSynthesizedClone(moduleName); + } + return undefined; + } + ts.getExternalModuleNameLiteral = getExternalModuleNameLiteral; + /** + * Some bundlers (SystemJS builder) sometimes want to rename dependencies. + * Here we check if alternative name was provided for a given moduleName and return it if possible. + */ + function tryRenameExternalModule(moduleName, sourceFile) { + var rename = sourceFile.renamedDependencies && sourceFile.renamedDependencies.get(moduleName.text); + return rename && ts.createLiteral(rename); + } + /** + * Get the name of a module as should be written in the emitted output. + * The emitted output name can be different from the input if: + * 1. The module has a /// + * 2. --out or --outFile is used, making the name relative to the rootDir + * Otherwise, a new StringLiteral node representing the module name will be returned. + */ + function tryGetModuleNameFromFile(file, host, options) { + if (!file) { + return undefined; + } + if (file.moduleName) { + return ts.createLiteral(file.moduleName); + } + if (!file.isDeclarationFile && (options.out || options.outFile)) { + return ts.createLiteral(ts.getExternalModuleNameFromPath(host, file.fileName)); + } + return undefined; + } + ts.tryGetModuleNameFromFile = tryGetModuleNameFromFile; + function tryGetModuleNameFromDeclaration(declaration, host, resolver, compilerOptions) { + return tryGetModuleNameFromFile(resolver.getExternalModuleFileFromDeclaration(declaration), host, compilerOptions); + } + /** + * Gets the initializer of an BindingOrAssignmentElement. + */ + function getInitializerOfBindingOrAssignmentElement(bindingElement) { + if (ts.isDeclarationBindingElement(bindingElement)) { + // `1` in `let { a = 1 } = ...` + // `1` in `let { a: b = 1 } = ...` + // `1` in `let { a: {b} = 1 } = ...` + // `1` in `let { a: [b] = 1 } = ...` + // `1` in `let [a = 1] = ...` + // `1` in `let [{a} = 1] = ...` + // `1` in `let [[a] = 1] = ...` + return bindingElement.initializer; + } + if (ts.isPropertyAssignment(bindingElement)) { + // `1` in `({ a: b = 1 } = ...)` + // `1` in `({ a: {b} = 1 } = ...)` + // `1` in `({ a: [b] = 1 } = ...)` + var initializer = bindingElement.initializer; + return ts.isAssignmentExpression(initializer, /*excludeCompoundAssignment*/ true) + ? initializer.right + : undefined; + } + if (ts.isShorthandPropertyAssignment(bindingElement)) { + // `1` in `({ a = 1 } = ...)` + return bindingElement.objectAssignmentInitializer; + } + if (ts.isAssignmentExpression(bindingElement, /*excludeCompoundAssignment*/ true)) { + // `1` in `[a = 1] = ...` + // `1` in `[{a} = 1] = ...` + // `1` in `[[a] = 1] = ...` + return bindingElement.right; + } + if (ts.isSpreadElement(bindingElement)) { + // Recovery consistent with existing emit. + return getInitializerOfBindingOrAssignmentElement(bindingElement.expression); + } + } + ts.getInitializerOfBindingOrAssignmentElement = getInitializerOfBindingOrAssignmentElement; + /** + * Gets the name of an BindingOrAssignmentElement. + */ + function getTargetOfBindingOrAssignmentElement(bindingElement) { + if (ts.isDeclarationBindingElement(bindingElement)) { + // `a` in `let { a } = ...` + // `a` in `let { a = 1 } = ...` + // `b` in `let { a: b } = ...` + // `b` in `let { a: b = 1 } = ...` + // `a` in `let { ...a } = ...` + // `{b}` in `let { a: {b} } = ...` + // `{b}` in `let { a: {b} = 1 } = ...` + // `[b]` in `let { a: [b] } = ...` + // `[b]` in `let { a: [b] = 1 } = ...` + // `a` in `let [a] = ...` + // `a` in `let [a = 1] = ...` + // `a` in `let [...a] = ...` + // `{a}` in `let [{a}] = ...` + // `{a}` in `let [{a} = 1] = ...` + // `[a]` in `let [[a]] = ...` + // `[a]` in `let [[a] = 1] = ...` + return bindingElement.name; + } + if (ts.isObjectLiteralElementLike(bindingElement)) { + switch (bindingElement.kind) { + case 281 /* PropertyAssignment */: + // `b` in `({ a: b } = ...)` + // `b` in `({ a: b = 1 } = ...)` + // `{b}` in `({ a: {b} } = ...)` + // `{b}` in `({ a: {b} = 1 } = ...)` + // `[b]` in `({ a: [b] } = ...)` + // `[b]` in `({ a: [b] = 1 } = ...)` + // `b.c` in `({ a: b.c } = ...)` + // `b.c` in `({ a: b.c = 1 } = ...)` + // `b[0]` in `({ a: b[0] } = ...)` + // `b[0]` in `({ a: b[0] = 1 } = ...)` + return getTargetOfBindingOrAssignmentElement(bindingElement.initializer); + case 282 /* ShorthandPropertyAssignment */: + // `a` in `({ a } = ...)` + // `a` in `({ a = 1 } = ...)` + return bindingElement.name; + case 283 /* SpreadAssignment */: + // `a` in `({ ...a } = ...)` + return getTargetOfBindingOrAssignmentElement(bindingElement.expression); + } + // no target + return undefined; + } + if (ts.isAssignmentExpression(bindingElement, /*excludeCompoundAssignment*/ true)) { + // `a` in `[a = 1] = ...` + // `{a}` in `[{a} = 1] = ...` + // `[a]` in `[[a] = 1] = ...` + // `a.b` in `[a.b = 1] = ...` + // `a[0]` in `[a[0] = 1] = ...` + return getTargetOfBindingOrAssignmentElement(bindingElement.left); + } + if (ts.isSpreadElement(bindingElement)) { + // `a` in `[...a] = ...` + return getTargetOfBindingOrAssignmentElement(bindingElement.expression); + } + // `a` in `[a] = ...` + // `{a}` in `[{a}] = ...` + // `[a]` in `[[a]] = ...` + // `a.b` in `[a.b] = ...` + // `a[0]` in `[a[0]] = ...` + return bindingElement; + } + ts.getTargetOfBindingOrAssignmentElement = getTargetOfBindingOrAssignmentElement; + /** + * Determines whether an BindingOrAssignmentElement is a rest element. + */ + function getRestIndicatorOfBindingOrAssignmentElement(bindingElement) { + switch (bindingElement.kind) { + case 156 /* Parameter */: + case 191 /* BindingElement */: + // `...` in `let [...a] = ...` + return bindingElement.dotDotDotToken; + case 213 /* SpreadElement */: + case 283 /* SpreadAssignment */: + // `...` in `[...a] = ...` + return bindingElement; + } + return undefined; + } + ts.getRestIndicatorOfBindingOrAssignmentElement = getRestIndicatorOfBindingOrAssignmentElement; + /** + * Gets the property name of a BindingOrAssignmentElement + */ + function getPropertyNameOfBindingOrAssignmentElement(bindingElement) { + var propertyName = tryGetPropertyNameOfBindingOrAssignmentElement(bindingElement); + ts.Debug.assert(!!propertyName || ts.isSpreadAssignment(bindingElement), "Invalid property name for binding element."); + return propertyName; + } + ts.getPropertyNameOfBindingOrAssignmentElement = getPropertyNameOfBindingOrAssignmentElement; + function tryGetPropertyNameOfBindingOrAssignmentElement(bindingElement) { + switch (bindingElement.kind) { + case 191 /* BindingElement */: + // `a` in `let { a: b } = ...` + // `[a]` in `let { [a]: b } = ...` + // `"a"` in `let { "a": b } = ...` + // `1` in `let { 1: b } = ...` + if (bindingElement.propertyName) { + var propertyName = bindingElement.propertyName; + if (ts.isPrivateIdentifier(propertyName)) { + return ts.Debug.failBadSyntaxKind(propertyName); + } + return ts.isComputedPropertyName(propertyName) && isStringOrNumericLiteral(propertyName.expression) + ? propertyName.expression + : propertyName; + } + break; + case 281 /* PropertyAssignment */: + // `a` in `({ a: b } = ...)` + // `[a]` in `({ [a]: b } = ...)` + // `"a"` in `({ "a": b } = ...)` + // `1` in `({ 1: b } = ...)` + if (bindingElement.name) { + var propertyName = bindingElement.name; + if (ts.isPrivateIdentifier(propertyName)) { + return ts.Debug.failBadSyntaxKind(propertyName); + } + return ts.isComputedPropertyName(propertyName) && isStringOrNumericLiteral(propertyName.expression) + ? propertyName.expression + : propertyName; + } + break; + case 283 /* SpreadAssignment */: + // `a` in `({ ...a } = ...)` + if (bindingElement.name && ts.isPrivateIdentifier(bindingElement.name)) { + return ts.Debug.failBadSyntaxKind(bindingElement.name); + } + return bindingElement.name; + } + var target = getTargetOfBindingOrAssignmentElement(bindingElement); + if (target && ts.isPropertyName(target)) { + return target; + } + } + ts.tryGetPropertyNameOfBindingOrAssignmentElement = tryGetPropertyNameOfBindingOrAssignmentElement; + function isStringOrNumericLiteral(node) { + var kind = node.kind; + return kind === 10 /* StringLiteral */ + || kind === 8 /* NumericLiteral */; + } + /** + * Gets the elements of a BindingOrAssignmentPattern + */ + function getElementsOfBindingOrAssignmentPattern(name) { + switch (name.kind) { + case 189 /* ObjectBindingPattern */: + case 190 /* ArrayBindingPattern */: + case 192 /* ArrayLiteralExpression */: + // `a` in `{a}` + // `a` in `[a]` + return name.elements; + case 193 /* ObjectLiteralExpression */: + // `a` in `{a}` + return name.properties; + } + } + ts.getElementsOfBindingOrAssignmentPattern = getElementsOfBindingOrAssignmentPattern; + function convertToArrayAssignmentElement(element) { + if (ts.isBindingElement(element)) { + if (element.dotDotDotToken) { + ts.Debug.assertNode(element.name, ts.isIdentifier); + return ts.setOriginalNode(ts.setTextRange(ts.createSpread(element.name), element), element); + } + var expression = convertToAssignmentElementTarget(element.name); + return element.initializer + ? ts.setOriginalNode(ts.setTextRange(ts.createAssignment(expression, element.initializer), element), element) + : expression; + } + ts.Debug.assertNode(element, ts.isExpression); + return element; + } + ts.convertToArrayAssignmentElement = convertToArrayAssignmentElement; + function convertToObjectAssignmentElement(element) { + if (ts.isBindingElement(element)) { + if (element.dotDotDotToken) { + ts.Debug.assertNode(element.name, ts.isIdentifier); + return ts.setOriginalNode(ts.setTextRange(ts.createSpreadAssignment(element.name), element), element); + } + if (element.propertyName) { + var expression = convertToAssignmentElementTarget(element.name); + return ts.setOriginalNode(ts.setTextRange(ts.createPropertyAssignment(element.propertyName, element.initializer ? ts.createAssignment(expression, element.initializer) : expression), element), element); + } + ts.Debug.assertNode(element.name, ts.isIdentifier); + return ts.setOriginalNode(ts.setTextRange(ts.createShorthandPropertyAssignment(element.name, element.initializer), element), element); + } + ts.Debug.assertNode(element, ts.isObjectLiteralElementLike); + return element; + } + ts.convertToObjectAssignmentElement = convertToObjectAssignmentElement; + function convertToAssignmentPattern(node) { + switch (node.kind) { + case 190 /* ArrayBindingPattern */: + case 192 /* ArrayLiteralExpression */: + return convertToArrayAssignmentPattern(node); + case 189 /* ObjectBindingPattern */: + case 193 /* ObjectLiteralExpression */: + return convertToObjectAssignmentPattern(node); + } + } + ts.convertToAssignmentPattern = convertToAssignmentPattern; + function convertToObjectAssignmentPattern(node) { + if (ts.isObjectBindingPattern(node)) { + return ts.setOriginalNode(ts.setTextRange(ts.createObjectLiteral(ts.map(node.elements, convertToObjectAssignmentElement)), node), node); + } + ts.Debug.assertNode(node, ts.isObjectLiteralExpression); + return node; + } + ts.convertToObjectAssignmentPattern = convertToObjectAssignmentPattern; + function convertToArrayAssignmentPattern(node) { + if (ts.isArrayBindingPattern(node)) { + return ts.setOriginalNode(ts.setTextRange(ts.createArrayLiteral(ts.map(node.elements, convertToArrayAssignmentElement)), node), node); + } + ts.Debug.assertNode(node, ts.isArrayLiteralExpression); + return node; + } + ts.convertToArrayAssignmentPattern = convertToArrayAssignmentPattern; + function convertToAssignmentElementTarget(node) { + if (ts.isBindingPattern(node)) { + return convertToAssignmentPattern(node); + } + ts.Debug.assertNode(node, ts.isExpression); + return node; + } + ts.convertToAssignmentElementTarget = convertToAssignmentElementTarget; +})(ts || (ts = {})); +var ts; +(function (ts) { + var isTypeNodeOrTypeParameterDeclaration = ts.or(ts.isTypeNode, ts.isTypeParameterDeclaration); + function visitNode(node, visitor, test, lift) { + if (node === undefined || visitor === undefined) { + return node; + } + ts.aggregateTransformFlags(node); + var visited = visitor(node); + if (visited === node) { + return node; + } + var visitedNode; + if (visited === undefined) { + return undefined; + } + else if (ts.isArray(visited)) { + visitedNode = (lift || extractSingleNode)(visited); + } + else { + visitedNode = visited; + } + ts.Debug.assertNode(visitedNode, test); + ts.aggregateTransformFlags(visitedNode); + return visitedNode; + } + ts.visitNode = visitNode; + /** + * Visits a NodeArray using the supplied visitor, possibly returning a new NodeArray in its place. + * + * @param nodes The NodeArray to visit. + * @param visitor The callback used to visit a Node. + * @param test A node test to execute for each node. + * @param start An optional value indicating the starting offset at which to start visiting. + * @param count An optional value indicating the maximum number of nodes to visit. + */ + function visitNodes(nodes, visitor, test, start, count) { + if (nodes === undefined || visitor === undefined) { + return nodes; + } + var updated; + // Ensure start and count have valid values + var length = nodes.length; + if (start === undefined || start < 0) { + start = 0; + } + if (count === undefined || count > length - start) { + count = length - start; + } + if (start > 0 || count < length) { + // If we are not visiting all of the original nodes, we must always create a new array. + // Since this is a fragment of a node array, we do not copy over the previous location + // and will only copy over `hasTrailingComma` if we are including the last element. + updated = ts.createNodeArray([], /*hasTrailingComma*/ nodes.hasTrailingComma && start + count === length); + } + // Visit each original node. + for (var i = 0; i < count; i++) { + var node = nodes[i + start]; + ts.aggregateTransformFlags(node); + var visited = node !== undefined ? visitor(node) : undefined; + if (updated !== undefined || visited === undefined || visited !== node) { + if (updated === undefined) { + // Ensure we have a copy of `nodes`, up to the current index. + updated = ts.createNodeArray(nodes.slice(0, i), nodes.hasTrailingComma); + ts.setTextRange(updated, nodes); + } + if (visited) { + if (ts.isArray(visited)) { + for (var _i = 0, visited_1 = visited; _i < visited_1.length; _i++) { + var visitedNode = visited_1[_i]; + ts.Debug.assertNode(visitedNode, test); + ts.aggregateTransformFlags(visitedNode); + updated.push(visitedNode); + } + } + else { + ts.Debug.assertNode(visited, test); + ts.aggregateTransformFlags(visited); + updated.push(visited); + } + } + } + } + return updated || nodes; + } + ts.visitNodes = visitNodes; + /** + * Starts a new lexical environment and visits a statement list, ending the lexical environment + * and merging hoisted declarations upon completion. + */ + function visitLexicalEnvironment(statements, visitor, context, start, ensureUseStrict) { + context.startLexicalEnvironment(); + statements = visitNodes(statements, visitor, ts.isStatement, start); + if (ensureUseStrict) + statements = ts.ensureUseStrict(statements); // eslint-disable-line @typescript-eslint/no-unnecessary-qualifier + return ts.mergeLexicalEnvironment(statements, context.endLexicalEnvironment()); + } + ts.visitLexicalEnvironment = visitLexicalEnvironment; + function visitParameterList(nodes, visitor, context, nodesVisitor) { + if (nodesVisitor === void 0) { nodesVisitor = visitNodes; } + var updated; + context.startLexicalEnvironment(); + if (nodes) { + context.setLexicalEnvironmentFlags(1 /* InParameters */, true); + updated = nodesVisitor(nodes, visitor, ts.isParameterDeclaration); + // As of ES2015, any runtime execution of that occurs in for a parameter (such as evaluating an + // initializer or a binding pattern), occurs in its own lexical scope. As a result, any expression + // that we might transform that introduces a temporary variable would fail as the temporary variable + // exists in a different lexical scope. To address this, we move any binding patterns and initializers + // in a parameter list to the body if we detect a variable being hoisted while visiting a parameter list + // when the emit target is greater than ES2015. + if (context.getLexicalEnvironmentFlags() & 2 /* VariablesHoistedInParameters */ && + ts.getEmitScriptTarget(context.getCompilerOptions()) >= 2 /* ES2015 */) { + updated = addDefaultValueAssignmentsIfNeeded(updated, context); + } + context.setLexicalEnvironmentFlags(1 /* InParameters */, false); + } + context.suspendLexicalEnvironment(); + return updated; + } + ts.visitParameterList = visitParameterList; + function addDefaultValueAssignmentsIfNeeded(parameters, context) { + var result; + for (var i = 0; i < parameters.length; i++) { + var parameter = parameters[i]; + var updated = addDefaultValueAssignmentIfNeeded(parameter, context); + if (result || updated !== parameter) { + if (!result) + result = parameters.slice(0, i); + result[i] = updated; + } + } + if (result) { + return ts.setTextRange(ts.createNodeArray(result, parameters.hasTrailingComma), parameters); + } + return parameters; + } + function addDefaultValueAssignmentIfNeeded(parameter, context) { + // A rest parameter cannot have a binding pattern or an initializer, + // so let's just ignore it. + return parameter.dotDotDotToken ? parameter : + ts.isBindingPattern(parameter.name) ? addDefaultValueAssignmentForBindingPattern(parameter, context) : + parameter.initializer ? addDefaultValueAssignmentForInitializer(parameter, parameter.name, parameter.initializer, context) : + parameter; + } + function addDefaultValueAssignmentForBindingPattern(parameter, context) { + context.addInitializationStatement(ts.createVariableStatement( + /*modifiers*/ undefined, ts.createVariableDeclarationList([ + ts.createVariableDeclaration(parameter.name, parameter.type, parameter.initializer ? + ts.createConditional(ts.createStrictEquality(ts.getGeneratedNameForNode(parameter), ts.createVoidZero()), parameter.initializer, ts.getGeneratedNameForNode(parameter)) : + ts.getGeneratedNameForNode(parameter)), + ]))); + return ts.updateParameter(parameter, parameter.decorators, parameter.modifiers, parameter.dotDotDotToken, ts.getGeneratedNameForNode(parameter), parameter.questionToken, parameter.type, + /*initializer*/ undefined); + } + function addDefaultValueAssignmentForInitializer(parameter, name, initializer, context) { + context.addInitializationStatement(ts.createIf(ts.createTypeCheck(ts.getSynthesizedClone(name), "undefined"), ts.setEmitFlags(ts.setTextRange(ts.createBlock([ + ts.createExpressionStatement(ts.setEmitFlags(ts.setTextRange(ts.createAssignment(ts.setEmitFlags(ts.getMutableClone(name), 48 /* NoSourceMap */), ts.setEmitFlags(initializer, 48 /* NoSourceMap */ | ts.getEmitFlags(initializer) | 1536 /* NoComments */)), parameter), 1536 /* NoComments */)) + ]), parameter), 1 /* SingleLine */ | 32 /* NoTrailingSourceMap */ | 384 /* NoTokenSourceMaps */ | 1536 /* NoComments */))); + return ts.updateParameter(parameter, parameter.decorators, parameter.modifiers, parameter.dotDotDotToken, parameter.name, parameter.questionToken, parameter.type, + /*initializer*/ undefined); + } + function visitFunctionBody(node, visitor, context) { + context.resumeLexicalEnvironment(); + var updated = visitNode(node, visitor, ts.isConciseBody); + var declarations = context.endLexicalEnvironment(); + if (ts.some(declarations)) { + var block = ts.convertToFunctionBody(updated); + var statements = ts.mergeLexicalEnvironment(block.statements, declarations); + return ts.updateBlock(block, statements); + } + return updated; + } + ts.visitFunctionBody = visitFunctionBody; + function visitEachChild(node, visitor, context, nodesVisitor, tokenVisitor) { + if (nodesVisitor === void 0) { nodesVisitor = visitNodes; } + if (node === undefined) { + return undefined; + } + var kind = node.kind; + // No need to visit nodes with no children. + if ((kind > 0 /* FirstToken */ && kind <= 152 /* LastToken */) || kind === 183 /* ThisType */) { + return node; + } + switch (kind) { + // Names + case 75 /* Identifier */: + return ts.updateIdentifier(node, nodesVisitor(node.typeArguments, visitor, isTypeNodeOrTypeParameterDeclaration)); + case 153 /* QualifiedName */: + return ts.updateQualifiedName(node, visitNode(node.left, visitor, ts.isEntityName), visitNode(node.right, visitor, ts.isIdentifier)); + case 154 /* ComputedPropertyName */: + return ts.updateComputedPropertyName(node, visitNode(node.expression, visitor, ts.isExpression)); + // Signature elements + case 155 /* TypeParameter */: + return ts.updateTypeParameterDeclaration(node, visitNode(node.name, visitor, ts.isIdentifier), visitNode(node.constraint, visitor, ts.isTypeNode), visitNode(node.default, visitor, ts.isTypeNode)); + case 156 /* Parameter */: + return ts.updateParameter(node, nodesVisitor(node.decorators, visitor, ts.isDecorator), nodesVisitor(node.modifiers, visitor, ts.isModifier), visitNode(node.dotDotDotToken, tokenVisitor, ts.isToken), visitNode(node.name, visitor, ts.isBindingName), visitNode(node.questionToken, tokenVisitor, ts.isToken), visitNode(node.type, visitor, ts.isTypeNode), visitNode(node.initializer, visitor, ts.isExpression)); + case 157 /* Decorator */: + return ts.updateDecorator(node, visitNode(node.expression, visitor, ts.isExpression)); + // Type elements + case 158 /* PropertySignature */: + return ts.updatePropertySignature(node, nodesVisitor(node.modifiers, visitor, ts.isToken), visitNode(node.name, visitor, ts.isPropertyName), visitNode(node.questionToken, tokenVisitor, ts.isToken), visitNode(node.type, visitor, ts.isTypeNode), visitNode(node.initializer, visitor, ts.isExpression)); + case 159 /* PropertyDeclaration */: + return ts.updateProperty(node, nodesVisitor(node.decorators, visitor, ts.isDecorator), nodesVisitor(node.modifiers, visitor, ts.isModifier), visitNode(node.name, visitor, ts.isPropertyName), + // QuestionToken and ExclamationToken is uniqued in Property Declaration and the signature of 'updateProperty' is that too + visitNode(node.questionToken || node.exclamationToken, tokenVisitor, ts.isToken), visitNode(node.type, visitor, ts.isTypeNode), visitNode(node.initializer, visitor, ts.isExpression)); + case 160 /* MethodSignature */: + return ts.updateMethodSignature(node, nodesVisitor(node.typeParameters, visitor, ts.isTypeParameterDeclaration), nodesVisitor(node.parameters, visitor, ts.isParameterDeclaration), visitNode(node.type, visitor, ts.isTypeNode), visitNode(node.name, visitor, ts.isPropertyName), visitNode(node.questionToken, tokenVisitor, ts.isToken)); + case 161 /* MethodDeclaration */: + return ts.updateMethod(node, nodesVisitor(node.decorators, visitor, ts.isDecorator), nodesVisitor(node.modifiers, visitor, ts.isModifier), visitNode(node.asteriskToken, tokenVisitor, ts.isToken), visitNode(node.name, visitor, ts.isPropertyName), visitNode(node.questionToken, tokenVisitor, ts.isToken), nodesVisitor(node.typeParameters, visitor, ts.isTypeParameterDeclaration), visitParameterList(node.parameters, visitor, context, nodesVisitor), visitNode(node.type, visitor, ts.isTypeNode), visitFunctionBody(node.body, visitor, context)); + case 162 /* Constructor */: + return ts.updateConstructor(node, nodesVisitor(node.decorators, visitor, ts.isDecorator), nodesVisitor(node.modifiers, visitor, ts.isModifier), visitParameterList(node.parameters, visitor, context, nodesVisitor), visitFunctionBody(node.body, visitor, context)); + case 163 /* GetAccessor */: + return ts.updateGetAccessor(node, nodesVisitor(node.decorators, visitor, ts.isDecorator), nodesVisitor(node.modifiers, visitor, ts.isModifier), visitNode(node.name, visitor, ts.isPropertyName), visitParameterList(node.parameters, visitor, context, nodesVisitor), visitNode(node.type, visitor, ts.isTypeNode), visitFunctionBody(node.body, visitor, context)); + case 164 /* SetAccessor */: + return ts.updateSetAccessor(node, nodesVisitor(node.decorators, visitor, ts.isDecorator), nodesVisitor(node.modifiers, visitor, ts.isModifier), visitNode(node.name, visitor, ts.isPropertyName), visitParameterList(node.parameters, visitor, context, nodesVisitor), visitFunctionBody(node.body, visitor, context)); + case 165 /* CallSignature */: + return ts.updateCallSignature(node, nodesVisitor(node.typeParameters, visitor, ts.isTypeParameterDeclaration), nodesVisitor(node.parameters, visitor, ts.isParameterDeclaration), visitNode(node.type, visitor, ts.isTypeNode)); + case 166 /* ConstructSignature */: + return ts.updateConstructSignature(node, nodesVisitor(node.typeParameters, visitor, ts.isTypeParameterDeclaration), nodesVisitor(node.parameters, visitor, ts.isParameterDeclaration), visitNode(node.type, visitor, ts.isTypeNode)); + case 167 /* IndexSignature */: + return ts.updateIndexSignature(node, nodesVisitor(node.decorators, visitor, ts.isDecorator), nodesVisitor(node.modifiers, visitor, ts.isModifier), nodesVisitor(node.parameters, visitor, ts.isParameterDeclaration), visitNode(node.type, visitor, ts.isTypeNode)); + // Types + case 168 /* TypePredicate */: + return ts.updateTypePredicateNodeWithModifier(node, visitNode(node.assertsModifier, visitor), visitNode(node.parameterName, visitor), visitNode(node.type, visitor, ts.isTypeNode)); + case 169 /* TypeReference */: + return ts.updateTypeReferenceNode(node, visitNode(node.typeName, visitor, ts.isEntityName), nodesVisitor(node.typeArguments, visitor, ts.isTypeNode)); + case 170 /* FunctionType */: + return ts.updateFunctionTypeNode(node, nodesVisitor(node.typeParameters, visitor, ts.isTypeParameterDeclaration), nodesVisitor(node.parameters, visitor, ts.isParameterDeclaration), visitNode(node.type, visitor, ts.isTypeNode)); + case 171 /* ConstructorType */: + return ts.updateConstructorTypeNode(node, nodesVisitor(node.typeParameters, visitor, ts.isTypeParameterDeclaration), nodesVisitor(node.parameters, visitor, ts.isParameterDeclaration), visitNode(node.type, visitor, ts.isTypeNode)); + case 172 /* TypeQuery */: + return ts.updateTypeQueryNode(node, visitNode(node.exprName, visitor, ts.isEntityName)); + case 173 /* TypeLiteral */: + return ts.updateTypeLiteralNode(node, nodesVisitor(node.members, visitor, ts.isTypeElement)); + case 174 /* ArrayType */: + return ts.updateArrayTypeNode(node, visitNode(node.elementType, visitor, ts.isTypeNode)); + case 175 /* TupleType */: + return ts.updateTupleTypeNode(node, nodesVisitor(node.elementTypes, visitor, ts.isTypeNode)); + case 176 /* OptionalType */: + return ts.updateOptionalTypeNode(node, visitNode(node.type, visitor, ts.isTypeNode)); + case 177 /* RestType */: + return ts.updateRestTypeNode(node, visitNode(node.type, visitor, ts.isTypeNode)); + case 178 /* UnionType */: + return ts.updateUnionTypeNode(node, nodesVisitor(node.types, visitor, ts.isTypeNode)); + case 179 /* IntersectionType */: + return ts.updateIntersectionTypeNode(node, nodesVisitor(node.types, visitor, ts.isTypeNode)); + case 180 /* ConditionalType */: + return ts.updateConditionalTypeNode(node, visitNode(node.checkType, visitor, ts.isTypeNode), visitNode(node.extendsType, visitor, ts.isTypeNode), visitNode(node.trueType, visitor, ts.isTypeNode), visitNode(node.falseType, visitor, ts.isTypeNode)); + case 181 /* InferType */: + return ts.updateInferTypeNode(node, visitNode(node.typeParameter, visitor, ts.isTypeParameterDeclaration)); + case 188 /* ImportType */: + return ts.updateImportTypeNode(node, visitNode(node.argument, visitor, ts.isTypeNode), visitNode(node.qualifier, visitor, ts.isEntityName), visitNodes(node.typeArguments, visitor, ts.isTypeNode), node.isTypeOf); + case 182 /* ParenthesizedType */: + return ts.updateParenthesizedType(node, visitNode(node.type, visitor, ts.isTypeNode)); + case 184 /* TypeOperator */: + return ts.updateTypeOperatorNode(node, visitNode(node.type, visitor, ts.isTypeNode)); + case 185 /* IndexedAccessType */: + return ts.updateIndexedAccessTypeNode(node, visitNode(node.objectType, visitor, ts.isTypeNode), visitNode(node.indexType, visitor, ts.isTypeNode)); + case 186 /* MappedType */: + return ts.updateMappedTypeNode(node, visitNode(node.readonlyToken, tokenVisitor, ts.isToken), visitNode(node.typeParameter, visitor, ts.isTypeParameterDeclaration), visitNode(node.questionToken, tokenVisitor, ts.isToken), visitNode(node.type, visitor, ts.isTypeNode)); + case 187 /* LiteralType */: + return ts.updateLiteralTypeNode(node, visitNode(node.literal, visitor, ts.isExpression)); + // Binding patterns + case 189 /* ObjectBindingPattern */: + return ts.updateObjectBindingPattern(node, nodesVisitor(node.elements, visitor, ts.isBindingElement)); + case 190 /* ArrayBindingPattern */: + return ts.updateArrayBindingPattern(node, nodesVisitor(node.elements, visitor, ts.isArrayBindingElement)); + case 191 /* BindingElement */: + return ts.updateBindingElement(node, visitNode(node.dotDotDotToken, tokenVisitor, ts.isToken), visitNode(node.propertyName, visitor, ts.isPropertyName), visitNode(node.name, visitor, ts.isBindingName), visitNode(node.initializer, visitor, ts.isExpression)); + // Expression + case 192 /* ArrayLiteralExpression */: + return ts.updateArrayLiteral(node, nodesVisitor(node.elements, visitor, ts.isExpression)); + case 193 /* ObjectLiteralExpression */: + return ts.updateObjectLiteral(node, nodesVisitor(node.properties, visitor, ts.isObjectLiteralElementLike)); + case 194 /* PropertyAccessExpression */: + if (node.flags & 32 /* OptionalChain */) { + return ts.updatePropertyAccessChain(node, visitNode(node.expression, visitor, ts.isExpression), visitNode(node.questionDotToken, tokenVisitor, ts.isToken), visitNode(node.name, visitor, ts.isIdentifier)); + } + return ts.updatePropertyAccess(node, visitNode(node.expression, visitor, ts.isExpression), visitNode(node.name, visitor, ts.isIdentifierOrPrivateIdentifier)); + case 195 /* ElementAccessExpression */: + if (node.flags & 32 /* OptionalChain */) { + return ts.updateElementAccessChain(node, visitNode(node.expression, visitor, ts.isExpression), visitNode(node.questionDotToken, tokenVisitor, ts.isToken), visitNode(node.argumentExpression, visitor, ts.isExpression)); + } + return ts.updateElementAccess(node, visitNode(node.expression, visitor, ts.isExpression), visitNode(node.argumentExpression, visitor, ts.isExpression)); + case 196 /* CallExpression */: + if (node.flags & 32 /* OptionalChain */) { + return ts.updateCallChain(node, visitNode(node.expression, visitor, ts.isExpression), visitNode(node.questionDotToken, tokenVisitor, ts.isToken), nodesVisitor(node.typeArguments, visitor, ts.isTypeNode), nodesVisitor(node.arguments, visitor, ts.isExpression)); + } + return ts.updateCall(node, visitNode(node.expression, visitor, ts.isExpression), nodesVisitor(node.typeArguments, visitor, ts.isTypeNode), nodesVisitor(node.arguments, visitor, ts.isExpression)); + case 197 /* NewExpression */: + return ts.updateNew(node, visitNode(node.expression, visitor, ts.isExpression), nodesVisitor(node.typeArguments, visitor, ts.isTypeNode), nodesVisitor(node.arguments, visitor, ts.isExpression)); + case 198 /* TaggedTemplateExpression */: + return ts.updateTaggedTemplate(node, visitNode(node.tag, visitor, ts.isExpression), visitNodes(node.typeArguments, visitor, ts.isExpression), visitNode(node.template, visitor, ts.isTemplateLiteral)); + case 199 /* TypeAssertionExpression */: + return ts.updateTypeAssertion(node, visitNode(node.type, visitor, ts.isTypeNode), visitNode(node.expression, visitor, ts.isExpression)); + case 200 /* ParenthesizedExpression */: + return ts.updateParen(node, visitNode(node.expression, visitor, ts.isExpression)); + case 201 /* FunctionExpression */: + return ts.updateFunctionExpression(node, nodesVisitor(node.modifiers, visitor, ts.isModifier), visitNode(node.asteriskToken, tokenVisitor, ts.isToken), visitNode(node.name, visitor, ts.isIdentifier), nodesVisitor(node.typeParameters, visitor, ts.isTypeParameterDeclaration), visitParameterList(node.parameters, visitor, context, nodesVisitor), visitNode(node.type, visitor, ts.isTypeNode), visitFunctionBody(node.body, visitor, context)); + case 202 /* ArrowFunction */: + return ts.updateArrowFunction(node, nodesVisitor(node.modifiers, visitor, ts.isModifier), nodesVisitor(node.typeParameters, visitor, ts.isTypeParameterDeclaration), visitParameterList(node.parameters, visitor, context, nodesVisitor), visitNode(node.type, visitor, ts.isTypeNode), visitNode(node.equalsGreaterThanToken, tokenVisitor, ts.isToken), visitFunctionBody(node.body, visitor, context)); + case 203 /* DeleteExpression */: + return ts.updateDelete(node, visitNode(node.expression, visitor, ts.isExpression)); + case 204 /* TypeOfExpression */: + return ts.updateTypeOf(node, visitNode(node.expression, visitor, ts.isExpression)); + case 205 /* VoidExpression */: + return ts.updateVoid(node, visitNode(node.expression, visitor, ts.isExpression)); + case 206 /* AwaitExpression */: + return ts.updateAwait(node, visitNode(node.expression, visitor, ts.isExpression)); + case 207 /* PrefixUnaryExpression */: + return ts.updatePrefix(node, visitNode(node.operand, visitor, ts.isExpression)); + case 208 /* PostfixUnaryExpression */: + return ts.updatePostfix(node, visitNode(node.operand, visitor, ts.isExpression)); + case 209 /* BinaryExpression */: + return ts.updateBinary(node, visitNode(node.left, visitor, ts.isExpression), visitNode(node.right, visitor, ts.isExpression), visitNode(node.operatorToken, tokenVisitor, ts.isToken)); + case 210 /* ConditionalExpression */: + return ts.updateConditional(node, visitNode(node.condition, visitor, ts.isExpression), visitNode(node.questionToken, tokenVisitor, ts.isToken), visitNode(node.whenTrue, visitor, ts.isExpression), visitNode(node.colonToken, tokenVisitor, ts.isToken), visitNode(node.whenFalse, visitor, ts.isExpression)); + case 211 /* TemplateExpression */: + return ts.updateTemplateExpression(node, visitNode(node.head, visitor, ts.isTemplateHead), nodesVisitor(node.templateSpans, visitor, ts.isTemplateSpan)); + case 212 /* YieldExpression */: + return ts.updateYield(node, visitNode(node.asteriskToken, tokenVisitor, ts.isToken), visitNode(node.expression, visitor, ts.isExpression)); + case 213 /* SpreadElement */: + return ts.updateSpread(node, visitNode(node.expression, visitor, ts.isExpression)); + case 214 /* ClassExpression */: + return ts.updateClassExpression(node, nodesVisitor(node.modifiers, visitor, ts.isModifier), visitNode(node.name, visitor, ts.isIdentifier), nodesVisitor(node.typeParameters, visitor, ts.isTypeParameterDeclaration), nodesVisitor(node.heritageClauses, visitor, ts.isHeritageClause), nodesVisitor(node.members, visitor, ts.isClassElement)); + case 216 /* ExpressionWithTypeArguments */: + return ts.updateExpressionWithTypeArguments(node, nodesVisitor(node.typeArguments, visitor, ts.isTypeNode), visitNode(node.expression, visitor, ts.isExpression)); + case 217 /* AsExpression */: + return ts.updateAsExpression(node, visitNode(node.expression, visitor, ts.isExpression), visitNode(node.type, visitor, ts.isTypeNode)); + case 218 /* NonNullExpression */: + return ts.updateNonNullExpression(node, visitNode(node.expression, visitor, ts.isExpression)); + case 219 /* MetaProperty */: + return ts.updateMetaProperty(node, visitNode(node.name, visitor, ts.isIdentifier)); + // Misc + case 221 /* TemplateSpan */: + return ts.updateTemplateSpan(node, visitNode(node.expression, visitor, ts.isExpression), visitNode(node.literal, visitor, ts.isTemplateMiddleOrTemplateTail)); + // Element + case 223 /* Block */: + return ts.updateBlock(node, nodesVisitor(node.statements, visitor, ts.isStatement)); + case 225 /* VariableStatement */: + return ts.updateVariableStatement(node, nodesVisitor(node.modifiers, visitor, ts.isModifier), visitNode(node.declarationList, visitor, ts.isVariableDeclarationList)); + case 226 /* ExpressionStatement */: + return ts.updateExpressionStatement(node, visitNode(node.expression, visitor, ts.isExpression)); + case 227 /* IfStatement */: + return ts.updateIf(node, visitNode(node.expression, visitor, ts.isExpression), visitNode(node.thenStatement, visitor, ts.isStatement, ts.liftToBlock), visitNode(node.elseStatement, visitor, ts.isStatement, ts.liftToBlock)); + case 228 /* DoStatement */: + return ts.updateDo(node, visitNode(node.statement, visitor, ts.isStatement, ts.liftToBlock), visitNode(node.expression, visitor, ts.isExpression)); + case 229 /* WhileStatement */: + return ts.updateWhile(node, visitNode(node.expression, visitor, ts.isExpression), visitNode(node.statement, visitor, ts.isStatement, ts.liftToBlock)); + case 230 /* ForStatement */: + return ts.updateFor(node, visitNode(node.initializer, visitor, ts.isForInitializer), visitNode(node.condition, visitor, ts.isExpression), visitNode(node.incrementor, visitor, ts.isExpression), visitNode(node.statement, visitor, ts.isStatement, ts.liftToBlock)); + case 231 /* ForInStatement */: + return ts.updateForIn(node, visitNode(node.initializer, visitor, ts.isForInitializer), visitNode(node.expression, visitor, ts.isExpression), visitNode(node.statement, visitor, ts.isStatement, ts.liftToBlock)); + case 232 /* ForOfStatement */: + return ts.updateForOf(node, visitNode(node.awaitModifier, tokenVisitor, ts.isToken), visitNode(node.initializer, visitor, ts.isForInitializer), visitNode(node.expression, visitor, ts.isExpression), visitNode(node.statement, visitor, ts.isStatement, ts.liftToBlock)); + case 233 /* ContinueStatement */: + return ts.updateContinue(node, visitNode(node.label, visitor, ts.isIdentifier)); + case 234 /* BreakStatement */: + return ts.updateBreak(node, visitNode(node.label, visitor, ts.isIdentifier)); + case 235 /* ReturnStatement */: + return ts.updateReturn(node, visitNode(node.expression, visitor, ts.isExpression)); + case 236 /* WithStatement */: + return ts.updateWith(node, visitNode(node.expression, visitor, ts.isExpression), visitNode(node.statement, visitor, ts.isStatement, ts.liftToBlock)); + case 237 /* SwitchStatement */: + return ts.updateSwitch(node, visitNode(node.expression, visitor, ts.isExpression), visitNode(node.caseBlock, visitor, ts.isCaseBlock)); + case 238 /* LabeledStatement */: + return ts.updateLabel(node, visitNode(node.label, visitor, ts.isIdentifier), visitNode(node.statement, visitor, ts.isStatement, ts.liftToBlock)); + case 239 /* ThrowStatement */: + return ts.updateThrow(node, visitNode(node.expression, visitor, ts.isExpression)); + case 240 /* TryStatement */: + return ts.updateTry(node, visitNode(node.tryBlock, visitor, ts.isBlock), visitNode(node.catchClause, visitor, ts.isCatchClause), visitNode(node.finallyBlock, visitor, ts.isBlock)); + case 242 /* VariableDeclaration */: + return ts.updateTypeScriptVariableDeclaration(node, visitNode(node.name, visitor, ts.isBindingName), visitNode(node.exclamationToken, tokenVisitor, ts.isToken), visitNode(node.type, visitor, ts.isTypeNode), visitNode(node.initializer, visitor, ts.isExpression)); + case 243 /* VariableDeclarationList */: + return ts.updateVariableDeclarationList(node, nodesVisitor(node.declarations, visitor, ts.isVariableDeclaration)); + case 244 /* FunctionDeclaration */: + return ts.updateFunctionDeclaration(node, nodesVisitor(node.decorators, visitor, ts.isDecorator), nodesVisitor(node.modifiers, visitor, ts.isModifier), visitNode(node.asteriskToken, tokenVisitor, ts.isToken), visitNode(node.name, visitor, ts.isIdentifier), nodesVisitor(node.typeParameters, visitor, ts.isTypeParameterDeclaration), visitParameterList(node.parameters, visitor, context, nodesVisitor), visitNode(node.type, visitor, ts.isTypeNode), visitFunctionBody(node.body, visitor, context)); + case 245 /* ClassDeclaration */: + return ts.updateClassDeclaration(node, nodesVisitor(node.decorators, visitor, ts.isDecorator), nodesVisitor(node.modifiers, visitor, ts.isModifier), visitNode(node.name, visitor, ts.isIdentifier), nodesVisitor(node.typeParameters, visitor, ts.isTypeParameterDeclaration), nodesVisitor(node.heritageClauses, visitor, ts.isHeritageClause), nodesVisitor(node.members, visitor, ts.isClassElement)); + case 246 /* InterfaceDeclaration */: + return ts.updateInterfaceDeclaration(node, nodesVisitor(node.decorators, visitor, ts.isDecorator), nodesVisitor(node.modifiers, visitor, ts.isModifier), visitNode(node.name, visitor, ts.isIdentifier), nodesVisitor(node.typeParameters, visitor, ts.isTypeParameterDeclaration), nodesVisitor(node.heritageClauses, visitor, ts.isHeritageClause), nodesVisitor(node.members, visitor, ts.isTypeElement)); + case 247 /* TypeAliasDeclaration */: + return ts.updateTypeAliasDeclaration(node, nodesVisitor(node.decorators, visitor, ts.isDecorator), nodesVisitor(node.modifiers, visitor, ts.isModifier), visitNode(node.name, visitor, ts.isIdentifier), nodesVisitor(node.typeParameters, visitor, ts.isTypeParameterDeclaration), visitNode(node.type, visitor, ts.isTypeNode)); + case 248 /* EnumDeclaration */: + return ts.updateEnumDeclaration(node, nodesVisitor(node.decorators, visitor, ts.isDecorator), nodesVisitor(node.modifiers, visitor, ts.isModifier), visitNode(node.name, visitor, ts.isIdentifier), nodesVisitor(node.members, visitor, ts.isEnumMember)); + case 249 /* ModuleDeclaration */: + return ts.updateModuleDeclaration(node, nodesVisitor(node.decorators, visitor, ts.isDecorator), nodesVisitor(node.modifiers, visitor, ts.isModifier), visitNode(node.name, visitor, ts.isIdentifier), visitNode(node.body, visitor, ts.isModuleBody)); + case 250 /* ModuleBlock */: + return ts.updateModuleBlock(node, nodesVisitor(node.statements, visitor, ts.isStatement)); + case 251 /* CaseBlock */: + return ts.updateCaseBlock(node, nodesVisitor(node.clauses, visitor, ts.isCaseOrDefaultClause)); + case 252 /* NamespaceExportDeclaration */: + return ts.updateNamespaceExportDeclaration(node, visitNode(node.name, visitor, ts.isIdentifier)); + case 253 /* ImportEqualsDeclaration */: + return ts.updateImportEqualsDeclaration(node, nodesVisitor(node.decorators, visitor, ts.isDecorator), nodesVisitor(node.modifiers, visitor, ts.isModifier), visitNode(node.name, visitor, ts.isIdentifier), visitNode(node.moduleReference, visitor, ts.isModuleReference)); + case 254 /* ImportDeclaration */: + return ts.updateImportDeclaration(node, nodesVisitor(node.decorators, visitor, ts.isDecorator), nodesVisitor(node.modifiers, visitor, ts.isModifier), visitNode(node.importClause, visitor, ts.isImportClause), visitNode(node.moduleSpecifier, visitor, ts.isExpression)); + case 255 /* ImportClause */: + return ts.updateImportClause(node, visitNode(node.name, visitor, ts.isIdentifier), visitNode(node.namedBindings, visitor, ts.isNamedImportBindings), node.isTypeOnly); + case 256 /* NamespaceImport */: + return ts.updateNamespaceImport(node, visitNode(node.name, visitor, ts.isIdentifier)); + case 262 /* NamespaceExport */: + return ts.updateNamespaceExport(node, visitNode(node.name, visitor, ts.isIdentifier)); + case 257 /* NamedImports */: + return ts.updateNamedImports(node, nodesVisitor(node.elements, visitor, ts.isImportSpecifier)); + case 258 /* ImportSpecifier */: + return ts.updateImportSpecifier(node, visitNode(node.propertyName, visitor, ts.isIdentifier), visitNode(node.name, visitor, ts.isIdentifier)); + case 259 /* ExportAssignment */: + return ts.updateExportAssignment(node, nodesVisitor(node.decorators, visitor, ts.isDecorator), nodesVisitor(node.modifiers, visitor, ts.isModifier), visitNode(node.expression, visitor, ts.isExpression)); + case 260 /* ExportDeclaration */: + return ts.updateExportDeclaration(node, nodesVisitor(node.decorators, visitor, ts.isDecorator), nodesVisitor(node.modifiers, visitor, ts.isModifier), visitNode(node.exportClause, visitor, ts.isNamedExportBindings), visitNode(node.moduleSpecifier, visitor, ts.isExpression), node.isTypeOnly); + case 261 /* NamedExports */: + return ts.updateNamedExports(node, nodesVisitor(node.elements, visitor, ts.isExportSpecifier)); + case 263 /* ExportSpecifier */: + return ts.updateExportSpecifier(node, visitNode(node.propertyName, visitor, ts.isIdentifier), visitNode(node.name, visitor, ts.isIdentifier)); + // Module references + case 265 /* ExternalModuleReference */: + return ts.updateExternalModuleReference(node, visitNode(node.expression, visitor, ts.isExpression)); + // JSX + case 266 /* JsxElement */: + return ts.updateJsxElement(node, visitNode(node.openingElement, visitor, ts.isJsxOpeningElement), nodesVisitor(node.children, visitor, ts.isJsxChild), visitNode(node.closingElement, visitor, ts.isJsxClosingElement)); + case 267 /* JsxSelfClosingElement */: + return ts.updateJsxSelfClosingElement(node, visitNode(node.tagName, visitor, ts.isJsxTagNameExpression), nodesVisitor(node.typeArguments, visitor, ts.isTypeNode), visitNode(node.attributes, visitor, ts.isJsxAttributes)); + case 268 /* JsxOpeningElement */: + return ts.updateJsxOpeningElement(node, visitNode(node.tagName, visitor, ts.isJsxTagNameExpression), nodesVisitor(node.typeArguments, visitor, ts.isTypeNode), visitNode(node.attributes, visitor, ts.isJsxAttributes)); + case 269 /* JsxClosingElement */: + return ts.updateJsxClosingElement(node, visitNode(node.tagName, visitor, ts.isJsxTagNameExpression)); + case 270 /* JsxFragment */: + return ts.updateJsxFragment(node, visitNode(node.openingFragment, visitor, ts.isJsxOpeningFragment), nodesVisitor(node.children, visitor, ts.isJsxChild), visitNode(node.closingFragment, visitor, ts.isJsxClosingFragment)); + case 273 /* JsxAttribute */: + return ts.updateJsxAttribute(node, visitNode(node.name, visitor, ts.isIdentifier), visitNode(node.initializer, visitor, ts.isStringLiteralOrJsxExpression)); + case 274 /* JsxAttributes */: + return ts.updateJsxAttributes(node, nodesVisitor(node.properties, visitor, ts.isJsxAttributeLike)); + case 275 /* JsxSpreadAttribute */: + return ts.updateJsxSpreadAttribute(node, visitNode(node.expression, visitor, ts.isExpression)); + case 276 /* JsxExpression */: + return ts.updateJsxExpression(node, visitNode(node.expression, visitor, ts.isExpression)); + // Clauses + case 277 /* CaseClause */: + return ts.updateCaseClause(node, visitNode(node.expression, visitor, ts.isExpression), nodesVisitor(node.statements, visitor, ts.isStatement)); + case 278 /* DefaultClause */: + return ts.updateDefaultClause(node, nodesVisitor(node.statements, visitor, ts.isStatement)); + case 279 /* HeritageClause */: + return ts.updateHeritageClause(node, nodesVisitor(node.types, visitor, ts.isExpressionWithTypeArguments)); + case 280 /* CatchClause */: + return ts.updateCatchClause(node, visitNode(node.variableDeclaration, visitor, ts.isVariableDeclaration), visitNode(node.block, visitor, ts.isBlock)); + // Property assignments + case 281 /* PropertyAssignment */: + return ts.updatePropertyAssignment(node, visitNode(node.name, visitor, ts.isPropertyName), visitNode(node.initializer, visitor, ts.isExpression)); + case 282 /* ShorthandPropertyAssignment */: + return ts.updateShorthandPropertyAssignment(node, visitNode(node.name, visitor, ts.isIdentifier), visitNode(node.objectAssignmentInitializer, visitor, ts.isExpression)); + case 283 /* SpreadAssignment */: + return ts.updateSpreadAssignment(node, visitNode(node.expression, visitor, ts.isExpression)); + // Enum + case 284 /* EnumMember */: + return ts.updateEnumMember(node, visitNode(node.name, visitor, ts.isPropertyName), visitNode(node.initializer, visitor, ts.isExpression)); + // Top-level nodes + case 290 /* SourceFile */: + return ts.updateSourceFileNode(node, visitLexicalEnvironment(node.statements, visitor, context)); + // Transformation nodes + case 326 /* PartiallyEmittedExpression */: + return ts.updatePartiallyEmittedExpression(node, visitNode(node.expression, visitor, ts.isExpression)); + case 327 /* CommaListExpression */: + return ts.updateCommaList(node, nodesVisitor(node.elements, visitor, ts.isExpression)); + default: + // No need to visit nodes with no children. + return node; + } + } + ts.visitEachChild = visitEachChild; + /** + * Extracts the single node from a NodeArray. + * + * @param nodes The NodeArray. + */ + function extractSingleNode(nodes) { + ts.Debug.assert(nodes.length <= 1, "Too many nodes written to output."); + return ts.singleOrUndefined(nodes); + } +})(ts || (ts = {})); +/* @internal */ +var ts; +(function (ts) { + function reduceNode(node, f, initial) { + return node ? f(initial, node) : initial; + } + function reduceNodeArray(nodes, f, initial) { + return nodes ? f(initial, nodes) : initial; + } + /** + * Similar to `reduceLeft`, performs a reduction against each child of a node. + * NOTE: Unlike `forEachChild`, this does *not* visit every node. + * + * @param node The node containing the children to reduce. + * @param initial The initial value to supply to the reduction. + * @param f The callback function + */ + function reduceEachChild(node, initial, cbNode, cbNodeArray) { + if (node === undefined) { + return initial; + } + var reduceNodes = cbNodeArray ? reduceNodeArray : ts.reduceLeft; + var cbNodes = cbNodeArray || cbNode; + var kind = node.kind; + // No need to visit nodes with no children. + if ((kind > 0 /* FirstToken */ && kind <= 152 /* LastToken */)) { + return initial; + } + // We do not yet support types. + if ((kind >= 168 /* TypePredicate */ && kind <= 187 /* LiteralType */)) { + return initial; + } + var result = initial; + switch (node.kind) { + // Leaf nodes + case 222 /* SemicolonClassElement */: + case 224 /* EmptyStatement */: + case 215 /* OmittedExpression */: + case 241 /* DebuggerStatement */: + case 325 /* NotEmittedStatement */: + // No need to visit nodes with no children. + break; + // Names + case 153 /* QualifiedName */: + result = reduceNode(node.left, cbNode, result); + result = reduceNode(node.right, cbNode, result); + break; + case 154 /* ComputedPropertyName */: + result = reduceNode(node.expression, cbNode, result); + break; + // Signature elements + case 156 /* Parameter */: + result = reduceNodes(node.decorators, cbNodes, result); + result = reduceNodes(node.modifiers, cbNodes, result); + result = reduceNode(node.name, cbNode, result); + result = reduceNode(node.type, cbNode, result); + result = reduceNode(node.initializer, cbNode, result); + break; + case 157 /* Decorator */: + result = reduceNode(node.expression, cbNode, result); + break; + // Type member + case 158 /* PropertySignature */: + result = reduceNodes(node.modifiers, cbNodes, result); + result = reduceNode(node.name, cbNode, result); + result = reduceNode(node.questionToken, cbNode, result); + result = reduceNode(node.type, cbNode, result); + result = reduceNode(node.initializer, cbNode, result); + break; + case 159 /* PropertyDeclaration */: + result = reduceNodes(node.decorators, cbNodes, result); + result = reduceNodes(node.modifiers, cbNodes, result); + result = reduceNode(node.name, cbNode, result); + result = reduceNode(node.type, cbNode, result); + result = reduceNode(node.initializer, cbNode, result); + break; + case 161 /* MethodDeclaration */: + result = reduceNodes(node.decorators, cbNodes, result); + result = reduceNodes(node.modifiers, cbNodes, result); + result = reduceNode(node.name, cbNode, result); + result = reduceNodes(node.typeParameters, cbNodes, result); + result = reduceNodes(node.parameters, cbNodes, result); + result = reduceNode(node.type, cbNode, result); + result = reduceNode(node.body, cbNode, result); + break; + case 162 /* Constructor */: + result = reduceNodes(node.modifiers, cbNodes, result); + result = reduceNodes(node.parameters, cbNodes, result); + result = reduceNode(node.body, cbNode, result); + break; + case 163 /* GetAccessor */: + result = reduceNodes(node.decorators, cbNodes, result); + result = reduceNodes(node.modifiers, cbNodes, result); + result = reduceNode(node.name, cbNode, result); + result = reduceNodes(node.parameters, cbNodes, result); + result = reduceNode(node.type, cbNode, result); + result = reduceNode(node.body, cbNode, result); + break; + case 164 /* SetAccessor */: + result = reduceNodes(node.decorators, cbNodes, result); + result = reduceNodes(node.modifiers, cbNodes, result); + result = reduceNode(node.name, cbNode, result); + result = reduceNodes(node.parameters, cbNodes, result); + result = reduceNode(node.body, cbNode, result); + break; + // Binding patterns + case 189 /* ObjectBindingPattern */: + case 190 /* ArrayBindingPattern */: + result = reduceNodes(node.elements, cbNodes, result); + break; + case 191 /* BindingElement */: + result = reduceNode(node.propertyName, cbNode, result); + result = reduceNode(node.name, cbNode, result); + result = reduceNode(node.initializer, cbNode, result); + break; + // Expression + case 192 /* ArrayLiteralExpression */: + result = reduceNodes(node.elements, cbNodes, result); + break; + case 193 /* ObjectLiteralExpression */: + result = reduceNodes(node.properties, cbNodes, result); + break; + case 194 /* PropertyAccessExpression */: + result = reduceNode(node.expression, cbNode, result); + result = reduceNode(node.name, cbNode, result); + break; + case 195 /* ElementAccessExpression */: + result = reduceNode(node.expression, cbNode, result); + result = reduceNode(node.argumentExpression, cbNode, result); + break; + case 196 /* CallExpression */: + result = reduceNode(node.expression, cbNode, result); + result = reduceNodes(node.typeArguments, cbNodes, result); + result = reduceNodes(node.arguments, cbNodes, result); + break; + case 197 /* NewExpression */: + result = reduceNode(node.expression, cbNode, result); + result = reduceNodes(node.typeArguments, cbNodes, result); + result = reduceNodes(node.arguments, cbNodes, result); + break; + case 198 /* TaggedTemplateExpression */: + result = reduceNode(node.tag, cbNode, result); + result = reduceNodes(node.typeArguments, cbNodes, result); + result = reduceNode(node.template, cbNode, result); + break; + case 199 /* TypeAssertionExpression */: + result = reduceNode(node.type, cbNode, result); + result = reduceNode(node.expression, cbNode, result); + break; + case 201 /* FunctionExpression */: + result = reduceNodes(node.modifiers, cbNodes, result); + result = reduceNode(node.name, cbNode, result); + result = reduceNodes(node.typeParameters, cbNodes, result); + result = reduceNodes(node.parameters, cbNodes, result); + result = reduceNode(node.type, cbNode, result); + result = reduceNode(node.body, cbNode, result); + break; + case 202 /* ArrowFunction */: + result = reduceNodes(node.modifiers, cbNodes, result); + result = reduceNodes(node.typeParameters, cbNodes, result); + result = reduceNodes(node.parameters, cbNodes, result); + result = reduceNode(node.type, cbNode, result); + result = reduceNode(node.body, cbNode, result); + break; + case 200 /* ParenthesizedExpression */: + case 203 /* DeleteExpression */: + case 204 /* TypeOfExpression */: + case 205 /* VoidExpression */: + case 206 /* AwaitExpression */: + case 212 /* YieldExpression */: + case 213 /* SpreadElement */: + case 218 /* NonNullExpression */: + result = reduceNode(node.expression, cbNode, result); + break; + case 207 /* PrefixUnaryExpression */: + case 208 /* PostfixUnaryExpression */: + result = reduceNode(node.operand, cbNode, result); + break; + case 209 /* BinaryExpression */: + result = reduceNode(node.left, cbNode, result); + result = reduceNode(node.right, cbNode, result); + break; + case 210 /* ConditionalExpression */: + result = reduceNode(node.condition, cbNode, result); + result = reduceNode(node.whenTrue, cbNode, result); + result = reduceNode(node.whenFalse, cbNode, result); + break; + case 211 /* TemplateExpression */: + result = reduceNode(node.head, cbNode, result); + result = reduceNodes(node.templateSpans, cbNodes, result); + break; + case 214 /* ClassExpression */: + result = reduceNodes(node.modifiers, cbNodes, result); + result = reduceNode(node.name, cbNode, result); + result = reduceNodes(node.typeParameters, cbNodes, result); + result = reduceNodes(node.heritageClauses, cbNodes, result); + result = reduceNodes(node.members, cbNodes, result); + break; + case 216 /* ExpressionWithTypeArguments */: + result = reduceNode(node.expression, cbNode, result); + result = reduceNodes(node.typeArguments, cbNodes, result); + break; + case 217 /* AsExpression */: + result = reduceNode(node.expression, cbNode, result); + result = reduceNode(node.type, cbNode, result); + break; + // Misc + case 221 /* TemplateSpan */: + result = reduceNode(node.expression, cbNode, result); + result = reduceNode(node.literal, cbNode, result); + break; + // Element + case 223 /* Block */: + result = reduceNodes(node.statements, cbNodes, result); + break; + case 225 /* VariableStatement */: + result = reduceNodes(node.modifiers, cbNodes, result); + result = reduceNode(node.declarationList, cbNode, result); + break; + case 226 /* ExpressionStatement */: + result = reduceNode(node.expression, cbNode, result); + break; + case 227 /* IfStatement */: + result = reduceNode(node.expression, cbNode, result); + result = reduceNode(node.thenStatement, cbNode, result); + result = reduceNode(node.elseStatement, cbNode, result); + break; + case 228 /* DoStatement */: + result = reduceNode(node.statement, cbNode, result); + result = reduceNode(node.expression, cbNode, result); + break; + case 229 /* WhileStatement */: + case 236 /* WithStatement */: + result = reduceNode(node.expression, cbNode, result); + result = reduceNode(node.statement, cbNode, result); + break; + case 230 /* ForStatement */: + result = reduceNode(node.initializer, cbNode, result); + result = reduceNode(node.condition, cbNode, result); + result = reduceNode(node.incrementor, cbNode, result); + result = reduceNode(node.statement, cbNode, result); + break; + case 231 /* ForInStatement */: + case 232 /* ForOfStatement */: + result = reduceNode(node.initializer, cbNode, result); + result = reduceNode(node.expression, cbNode, result); + result = reduceNode(node.statement, cbNode, result); + break; + case 235 /* ReturnStatement */: + case 239 /* ThrowStatement */: + result = reduceNode(node.expression, cbNode, result); + break; + case 237 /* SwitchStatement */: + result = reduceNode(node.expression, cbNode, result); + result = reduceNode(node.caseBlock, cbNode, result); + break; + case 238 /* LabeledStatement */: + result = reduceNode(node.label, cbNode, result); + result = reduceNode(node.statement, cbNode, result); + break; + case 240 /* TryStatement */: + result = reduceNode(node.tryBlock, cbNode, result); + result = reduceNode(node.catchClause, cbNode, result); + result = reduceNode(node.finallyBlock, cbNode, result); + break; + case 242 /* VariableDeclaration */: + result = reduceNode(node.name, cbNode, result); + result = reduceNode(node.type, cbNode, result); + result = reduceNode(node.initializer, cbNode, result); + break; + case 243 /* VariableDeclarationList */: + result = reduceNodes(node.declarations, cbNodes, result); + break; + case 244 /* FunctionDeclaration */: + result = reduceNodes(node.decorators, cbNodes, result); + result = reduceNodes(node.modifiers, cbNodes, result); + result = reduceNode(node.name, cbNode, result); + result = reduceNodes(node.typeParameters, cbNodes, result); + result = reduceNodes(node.parameters, cbNodes, result); + result = reduceNode(node.type, cbNode, result); + result = reduceNode(node.body, cbNode, result); + break; + case 245 /* ClassDeclaration */: + result = reduceNodes(node.decorators, cbNodes, result); + result = reduceNodes(node.modifiers, cbNodes, result); + result = reduceNode(node.name, cbNode, result); + result = reduceNodes(node.typeParameters, cbNodes, result); + result = reduceNodes(node.heritageClauses, cbNodes, result); + result = reduceNodes(node.members, cbNodes, result); + break; + case 248 /* EnumDeclaration */: + result = reduceNodes(node.decorators, cbNodes, result); + result = reduceNodes(node.modifiers, cbNodes, result); + result = reduceNode(node.name, cbNode, result); + result = reduceNodes(node.members, cbNodes, result); + break; + case 249 /* ModuleDeclaration */: + result = reduceNodes(node.decorators, cbNodes, result); + result = reduceNodes(node.modifiers, cbNodes, result); + result = reduceNode(node.name, cbNode, result); + result = reduceNode(node.body, cbNode, result); + break; + case 250 /* ModuleBlock */: + result = reduceNodes(node.statements, cbNodes, result); + break; + case 251 /* CaseBlock */: + result = reduceNodes(node.clauses, cbNodes, result); + break; + case 253 /* ImportEqualsDeclaration */: + result = reduceNodes(node.decorators, cbNodes, result); + result = reduceNodes(node.modifiers, cbNodes, result); + result = reduceNode(node.name, cbNode, result); + result = reduceNode(node.moduleReference, cbNode, result); + break; + case 254 /* ImportDeclaration */: + result = reduceNodes(node.decorators, cbNodes, result); + result = reduceNodes(node.modifiers, cbNodes, result); + result = reduceNode(node.importClause, cbNode, result); + result = reduceNode(node.moduleSpecifier, cbNode, result); + break; + case 255 /* ImportClause */: + result = reduceNode(node.name, cbNode, result); + result = reduceNode(node.namedBindings, cbNode, result); + break; + case 256 /* NamespaceImport */: + result = reduceNode(node.name, cbNode, result); + break; + case 262 /* NamespaceExport */: + result = reduceNode(node.name, cbNode, result); + break; + case 257 /* NamedImports */: + case 261 /* NamedExports */: + result = reduceNodes(node.elements, cbNodes, result); + break; + case 258 /* ImportSpecifier */: + case 263 /* ExportSpecifier */: + result = reduceNode(node.propertyName, cbNode, result); + result = reduceNode(node.name, cbNode, result); + break; + case 259 /* ExportAssignment */: + result = ts.reduceLeft(node.decorators, cbNode, result); + result = ts.reduceLeft(node.modifiers, cbNode, result); + result = reduceNode(node.expression, cbNode, result); + break; + case 260 /* ExportDeclaration */: + result = ts.reduceLeft(node.decorators, cbNode, result); + result = ts.reduceLeft(node.modifiers, cbNode, result); + result = reduceNode(node.exportClause, cbNode, result); + result = reduceNode(node.moduleSpecifier, cbNode, result); + break; + // Module references + case 265 /* ExternalModuleReference */: + result = reduceNode(node.expression, cbNode, result); + break; + // JSX + case 266 /* JsxElement */: + result = reduceNode(node.openingElement, cbNode, result); + result = ts.reduceLeft(node.children, cbNode, result); + result = reduceNode(node.closingElement, cbNode, result); + break; + case 270 /* JsxFragment */: + result = reduceNode(node.openingFragment, cbNode, result); + result = ts.reduceLeft(node.children, cbNode, result); + result = reduceNode(node.closingFragment, cbNode, result); + break; + case 267 /* JsxSelfClosingElement */: + case 268 /* JsxOpeningElement */: + result = reduceNode(node.tagName, cbNode, result); + result = reduceNodes(node.typeArguments, cbNode, result); + result = reduceNode(node.attributes, cbNode, result); + break; + case 274 /* JsxAttributes */: + result = reduceNodes(node.properties, cbNodes, result); + break; + case 269 /* JsxClosingElement */: + result = reduceNode(node.tagName, cbNode, result); + break; + case 273 /* JsxAttribute */: + result = reduceNode(node.name, cbNode, result); + result = reduceNode(node.initializer, cbNode, result); + break; + case 275 /* JsxSpreadAttribute */: + result = reduceNode(node.expression, cbNode, result); + break; + case 276 /* JsxExpression */: + result = reduceNode(node.expression, cbNode, result); + break; + // Clauses + case 277 /* CaseClause */: + result = reduceNode(node.expression, cbNode, result); + // falls through + case 278 /* DefaultClause */: + result = reduceNodes(node.statements, cbNodes, result); + break; + case 279 /* HeritageClause */: + result = reduceNodes(node.types, cbNodes, result); + break; + case 280 /* CatchClause */: + result = reduceNode(node.variableDeclaration, cbNode, result); + result = reduceNode(node.block, cbNode, result); + break; + // Property assignments + case 281 /* PropertyAssignment */: + result = reduceNode(node.name, cbNode, result); + result = reduceNode(node.initializer, cbNode, result); + break; + case 282 /* ShorthandPropertyAssignment */: + result = reduceNode(node.name, cbNode, result); + result = reduceNode(node.objectAssignmentInitializer, cbNode, result); + break; + case 283 /* SpreadAssignment */: + result = reduceNode(node.expression, cbNode, result); + break; + // Enum + case 284 /* EnumMember */: + result = reduceNode(node.name, cbNode, result); + result = reduceNode(node.initializer, cbNode, result); + break; + // Top-level nodes + case 290 /* SourceFile */: + result = reduceNodes(node.statements, cbNodes, result); + break; + // Transformation nodes + case 326 /* PartiallyEmittedExpression */: + result = reduceNode(node.expression, cbNode, result); + break; + case 327 /* CommaListExpression */: + result = reduceNodes(node.elements, cbNodes, result); + break; + default: + break; + } + return result; + } + ts.reduceEachChild = reduceEachChild; + function findSpanEnd(array, test, start) { + var i = start; + while (i < array.length && test(array[i])) { + i++; + } + return i; + } + function mergeLexicalEnvironment(statements, declarations) { + if (!ts.some(declarations)) { + return statements; + } + // When we merge new lexical statements into an existing statement list, we merge them in the following manner: + // + // Given: + // + // | Left | Right | + // |------------------------------------|-------------------------------------| + // | [standard prologues (left)] | [standard prologues (right)] | + // | [hoisted functions (left)] | [hoisted functions (right)] | + // | [hoisted variables (left)] | [hoisted variables (right)] | + // | [lexical init statements (left)] | [lexical init statements (right)] | + // | [other statements (left)] | | + // + // The resulting statement list will be: + // + // | Result | + // |-------------------------------------| + // | [standard prologues (right)] | + // | [standard prologues (left)] | + // | [hoisted functions (right)] | + // | [hoisted functions (left)] | + // | [hoisted variables (right)] | + // | [hoisted variables (left)] | + // | [lexical init statements (right)] | + // | [lexical init statements (left)] | + // | [other statements (left)] | + // + // NOTE: It is expected that new lexical init statements must be evaluated before existing lexical init statements, + // as the prior transformation may depend on the evaluation of the lexical init statements to be in the correct state. + // find standard prologues on left in the following order: standard directives, hoisted functions, hoisted variables, other custom + var leftStandardPrologueEnd = findSpanEnd(statements, ts.isPrologueDirective, 0); + var leftHoistedFunctionsEnd = findSpanEnd(statements, ts.isHoistedFunction, leftStandardPrologueEnd); + var leftHoistedVariablesEnd = findSpanEnd(statements, ts.isHoistedVariableStatement, leftHoistedFunctionsEnd); + // find standard prologues on right in the following order: standard directives, hoisted functions, hoisted variables, other custom + var rightStandardPrologueEnd = findSpanEnd(declarations, ts.isPrologueDirective, 0); + var rightHoistedFunctionsEnd = findSpanEnd(declarations, ts.isHoistedFunction, rightStandardPrologueEnd); + var rightHoistedVariablesEnd = findSpanEnd(declarations, ts.isHoistedVariableStatement, rightHoistedFunctionsEnd); + var rightCustomPrologueEnd = findSpanEnd(declarations, ts.isCustomPrologue, rightHoistedVariablesEnd); + ts.Debug.assert(rightCustomPrologueEnd === declarations.length, "Expected declarations to be valid standard or custom prologues"); + // splice prologues from the right into the left. We do this in reverse order + // so that we don't need to recompute the index on the left when we insert items. + var left = ts.isNodeArray(statements) ? statements.slice() : statements; + // splice other custom prologues from right into left + if (rightCustomPrologueEnd > rightHoistedVariablesEnd) { + left.splice.apply(left, __spreadArrays([leftHoistedVariablesEnd, 0], declarations.slice(rightHoistedVariablesEnd, rightCustomPrologueEnd))); + } + // splice hoisted variables from right into left + if (rightHoistedVariablesEnd > rightHoistedFunctionsEnd) { + left.splice.apply(left, __spreadArrays([leftHoistedFunctionsEnd, 0], declarations.slice(rightHoistedFunctionsEnd, rightHoistedVariablesEnd))); + } + // splice hoisted functions from right into left + if (rightHoistedFunctionsEnd > rightStandardPrologueEnd) { + left.splice.apply(left, __spreadArrays([leftStandardPrologueEnd, 0], declarations.slice(rightStandardPrologueEnd, rightHoistedFunctionsEnd))); + } + // splice standard prologues from right into left (that are not already in left) + if (rightStandardPrologueEnd > 0) { + if (leftStandardPrologueEnd === 0) { + left.splice.apply(left, __spreadArrays([0, 0], declarations.slice(0, rightStandardPrologueEnd))); + } + else { + var leftPrologues = ts.createMap(); + for (var i = 0; i < leftStandardPrologueEnd; i++) { + var leftPrologue = statements[i]; + leftPrologues.set(leftPrologue.expression.text, true); + } + for (var i = rightStandardPrologueEnd - 1; i >= 0; i--) { + var rightPrologue = declarations[i]; + if (!leftPrologues.has(rightPrologue.expression.text)) { + left.unshift(rightPrologue); + } + } + } + } + if (ts.isNodeArray(statements)) { + return ts.setTextRange(ts.createNodeArray(left, statements.hasTrailingComma), statements); + } + return statements; + } + ts.mergeLexicalEnvironment = mergeLexicalEnvironment; + /** + * Lifts a NodeArray containing only Statement nodes to a block. + * + * @param nodes The NodeArray. + */ + function liftToBlock(nodes) { + ts.Debug.assert(ts.every(nodes, ts.isStatement), "Cannot lift nodes to a Block."); + return ts.singleOrUndefined(nodes) || ts.createBlock(nodes); + } + ts.liftToBlock = liftToBlock; + /** + * Aggregates the TransformFlags for a Node and its subtree. + */ + function aggregateTransformFlags(node) { + aggregateTransformFlagsForNode(node); + return node; + } + ts.aggregateTransformFlags = aggregateTransformFlags; + /** + * Aggregates the TransformFlags for a Node and its subtree. The flags for the subtree are + * computed first, then the transform flags for the current node are computed from the subtree + * flags and the state of the current node. Finally, the transform flags of the node are + * returned, excluding any flags that should not be included in its parent node's subtree + * flags. + */ + function aggregateTransformFlagsForNode(node) { + if (node === undefined) { + return 0 /* None */; + } + if (node.transformFlags & 536870912 /* HasComputedFlags */) { + return node.transformFlags & ~ts.getTransformFlagsSubtreeExclusions(node.kind); + } + var subtreeFlags = aggregateTransformFlagsForSubtree(node); + return ts.computeTransformFlagsForNode(node, subtreeFlags); + } + function aggregateTransformFlagsForNodeArray(nodes) { + if (nodes === undefined) { + return 0 /* None */; + } + var subtreeFlags = 0 /* None */; + var nodeArrayFlags = 0 /* None */; + for (var _i = 0, nodes_3 = nodes; _i < nodes_3.length; _i++) { + var node = nodes_3[_i]; + subtreeFlags |= aggregateTransformFlagsForNode(node); + nodeArrayFlags |= node.transformFlags & ~536870912 /* HasComputedFlags */; + } + nodes.transformFlags = nodeArrayFlags | 536870912 /* HasComputedFlags */; + return subtreeFlags; + } + /** + * Aggregates the transform flags for the subtree of a node. + */ + function aggregateTransformFlagsForSubtree(node) { + // We do not transform ambient declarations or types, so there is no need to + // recursively aggregate transform flags. + if (ts.hasModifier(node, 2 /* Ambient */) || (ts.isTypeNode(node) && node.kind !== 216 /* ExpressionWithTypeArguments */)) { + return 0 /* None */; + } + // Aggregate the transform flags of each child. + return reduceEachChild(node, 0 /* None */, aggregateTransformFlagsForChildNode, aggregateTransformFlagsForChildNodes); + } + /** + * Aggregates the TransformFlags of a child node with the TransformFlags of its + * siblings. + */ + function aggregateTransformFlagsForChildNode(transformFlags, node) { + return transformFlags | aggregateTransformFlagsForNode(node); + } + function aggregateTransformFlagsForChildNodes(transformFlags, nodes) { + return transformFlags | aggregateTransformFlagsForNodeArray(nodes); + } +})(ts || (ts = {})); +/* @internal */ +var ts; +(function (ts) { + function createSourceMapGenerator(host, file, sourceRoot, sourcesDirectoryPath, generatorOptions) { + var _a = generatorOptions.extendedDiagnostics + ? ts.performance.createTimer("Source Map", "beforeSourcemap", "afterSourcemap") + : ts.performance.nullTimer, enter = _a.enter, exit = _a.exit; + // Current source map file and its index in the sources list + var rawSources = []; + var sources = []; + var sourceToSourceIndexMap = ts.createMap(); + var sourcesContent; + var names = []; + var nameToNameIndexMap; + var mappings = ""; + // Last recorded and encoded mappings + var lastGeneratedLine = 0; + var lastGeneratedCharacter = 0; + var lastSourceIndex = 0; + var lastSourceLine = 0; + var lastSourceCharacter = 0; + var lastNameIndex = 0; + var hasLast = false; + var pendingGeneratedLine = 0; + var pendingGeneratedCharacter = 0; + var pendingSourceIndex = 0; + var pendingSourceLine = 0; + var pendingSourceCharacter = 0; + var pendingNameIndex = 0; + var hasPending = false; + var hasPendingSource = false; + var hasPendingName = false; + return { + getSources: function () { return rawSources; }, + addSource: addSource, + setSourceContent: setSourceContent, + addName: addName, + addMapping: addMapping, + appendSourceMap: appendSourceMap, + toJSON: toJSON, + toString: function () { return JSON.stringify(toJSON()); } + }; + function addSource(fileName) { + enter(); + var source = ts.getRelativePathToDirectoryOrUrl(sourcesDirectoryPath, fileName, host.getCurrentDirectory(), host.getCanonicalFileName, + /*isAbsolutePathAnUrl*/ true); + var sourceIndex = sourceToSourceIndexMap.get(source); + if (sourceIndex === undefined) { + sourceIndex = sources.length; + sources.push(source); + rawSources.push(fileName); + sourceToSourceIndexMap.set(source, sourceIndex); + } + exit(); + return sourceIndex; + } + /* eslint-disable boolean-trivia, no-null/no-null */ + function setSourceContent(sourceIndex, content) { + enter(); + if (content !== null) { + if (!sourcesContent) + sourcesContent = []; + while (sourcesContent.length < sourceIndex) { + sourcesContent.push(null); + } + sourcesContent[sourceIndex] = content; + } + exit(); + } + /* eslint-enable boolean-trivia, no-null/no-null */ + function addName(name) { + enter(); + if (!nameToNameIndexMap) + nameToNameIndexMap = ts.createMap(); + var nameIndex = nameToNameIndexMap.get(name); + if (nameIndex === undefined) { + nameIndex = names.length; + names.push(name); + nameToNameIndexMap.set(name, nameIndex); + } + exit(); + return nameIndex; + } + function isNewGeneratedPosition(generatedLine, generatedCharacter) { + return !hasPending + || pendingGeneratedLine !== generatedLine + || pendingGeneratedCharacter !== generatedCharacter; + } + function isBacktrackingSourcePosition(sourceIndex, sourceLine, sourceCharacter) { + return sourceIndex !== undefined + && sourceLine !== undefined + && sourceCharacter !== undefined + && pendingSourceIndex === sourceIndex + && (pendingSourceLine > sourceLine + || pendingSourceLine === sourceLine && pendingSourceCharacter > sourceCharacter); + } + function addMapping(generatedLine, generatedCharacter, sourceIndex, sourceLine, sourceCharacter, nameIndex) { + ts.Debug.assert(generatedLine >= pendingGeneratedLine, "generatedLine cannot backtrack"); + ts.Debug.assert(generatedCharacter >= 0, "generatedCharacter cannot be negative"); + ts.Debug.assert(sourceIndex === undefined || sourceIndex >= 0, "sourceIndex cannot be negative"); + ts.Debug.assert(sourceLine === undefined || sourceLine >= 0, "sourceLine cannot be negative"); + ts.Debug.assert(sourceCharacter === undefined || sourceCharacter >= 0, "sourceCharacter cannot be negative"); + enter(); + // If this location wasn't recorded or the location in source is going backwards, record the mapping + if (isNewGeneratedPosition(generatedLine, generatedCharacter) || + isBacktrackingSourcePosition(sourceIndex, sourceLine, sourceCharacter)) { + commitPendingMapping(); + pendingGeneratedLine = generatedLine; + pendingGeneratedCharacter = generatedCharacter; + hasPendingSource = false; + hasPendingName = false; + hasPending = true; + } + if (sourceIndex !== undefined && sourceLine !== undefined && sourceCharacter !== undefined) { + pendingSourceIndex = sourceIndex; + pendingSourceLine = sourceLine; + pendingSourceCharacter = sourceCharacter; + hasPendingSource = true; + if (nameIndex !== undefined) { + pendingNameIndex = nameIndex; + hasPendingName = true; + } + } + exit(); + } + function appendSourceMap(generatedLine, generatedCharacter, map, sourceMapPath, start, end) { + ts.Debug.assert(generatedLine >= pendingGeneratedLine, "generatedLine cannot backtrack"); + ts.Debug.assert(generatedCharacter >= 0, "generatedCharacter cannot be negative"); + enter(); + // First, decode the old component sourcemap + var sourceIndexToNewSourceIndexMap = []; + var nameIndexToNewNameIndexMap; + var mappingIterator = decodeMappings(map.mappings); + for (var iterResult = mappingIterator.next(); !iterResult.done; iterResult = mappingIterator.next()) { + var raw = iterResult.value; + if (end && (raw.generatedLine > end.line || + (raw.generatedLine === end.line && raw.generatedCharacter > end.character))) { + break; + } + if (start && (raw.generatedLine < start.line || + (start.line === raw.generatedLine && raw.generatedCharacter < start.character))) { + continue; + } + // Then reencode all the updated mappings into the overall map + var newSourceIndex = void 0; + var newSourceLine = void 0; + var newSourceCharacter = void 0; + var newNameIndex = void 0; + if (raw.sourceIndex !== undefined) { + newSourceIndex = sourceIndexToNewSourceIndexMap[raw.sourceIndex]; + if (newSourceIndex === undefined) { + // Apply offsets to each position and fixup source entries + var rawPath = map.sources[raw.sourceIndex]; + var relativePath = map.sourceRoot ? ts.combinePaths(map.sourceRoot, rawPath) : rawPath; + var combinedPath = ts.combinePaths(ts.getDirectoryPath(sourceMapPath), relativePath); + sourceIndexToNewSourceIndexMap[raw.sourceIndex] = newSourceIndex = addSource(combinedPath); + if (map.sourcesContent && typeof map.sourcesContent[raw.sourceIndex] === "string") { + setSourceContent(newSourceIndex, map.sourcesContent[raw.sourceIndex]); + } + } + newSourceLine = raw.sourceLine; + newSourceCharacter = raw.sourceCharacter; + if (map.names && raw.nameIndex !== undefined) { + if (!nameIndexToNewNameIndexMap) + nameIndexToNewNameIndexMap = []; + newNameIndex = nameIndexToNewNameIndexMap[raw.nameIndex]; + if (newNameIndex === undefined) { + nameIndexToNewNameIndexMap[raw.nameIndex] = newNameIndex = addName(map.names[raw.nameIndex]); + } + } + } + var rawGeneratedLine = raw.generatedLine - (start ? start.line : 0); + var newGeneratedLine = rawGeneratedLine + generatedLine; + var rawGeneratedCharacter = start && start.line === raw.generatedLine ? raw.generatedCharacter - start.character : raw.generatedCharacter; + var newGeneratedCharacter = rawGeneratedLine === 0 ? rawGeneratedCharacter + generatedCharacter : rawGeneratedCharacter; + addMapping(newGeneratedLine, newGeneratedCharacter, newSourceIndex, newSourceLine, newSourceCharacter, newNameIndex); + } + exit(); + } + function shouldCommitMapping() { + return !hasLast + || lastGeneratedLine !== pendingGeneratedLine + || lastGeneratedCharacter !== pendingGeneratedCharacter + || lastSourceIndex !== pendingSourceIndex + || lastSourceLine !== pendingSourceLine + || lastSourceCharacter !== pendingSourceCharacter + || lastNameIndex !== pendingNameIndex; + } + function commitPendingMapping() { + if (!hasPending || !shouldCommitMapping()) { + return; + } + enter(); + // Line/Comma delimiters + if (lastGeneratedLine < pendingGeneratedLine) { + // Emit line delimiters + do { + mappings += ";"; + lastGeneratedLine++; + lastGeneratedCharacter = 0; + } while (lastGeneratedLine < pendingGeneratedLine); + } + else { + ts.Debug.assertEqual(lastGeneratedLine, pendingGeneratedLine, "generatedLine cannot backtrack"); + // Emit comma to separate the entry + if (hasLast) { + mappings += ","; + } + } + // 1. Relative generated character + mappings += base64VLQFormatEncode(pendingGeneratedCharacter - lastGeneratedCharacter); + lastGeneratedCharacter = pendingGeneratedCharacter; + if (hasPendingSource) { + // 2. Relative sourceIndex + mappings += base64VLQFormatEncode(pendingSourceIndex - lastSourceIndex); + lastSourceIndex = pendingSourceIndex; + // 3. Relative source line + mappings += base64VLQFormatEncode(pendingSourceLine - lastSourceLine); + lastSourceLine = pendingSourceLine; + // 4. Relative source character + mappings += base64VLQFormatEncode(pendingSourceCharacter - lastSourceCharacter); + lastSourceCharacter = pendingSourceCharacter; + if (hasPendingName) { + // 5. Relative nameIndex + mappings += base64VLQFormatEncode(pendingNameIndex - lastNameIndex); + lastNameIndex = pendingNameIndex; + } + } + hasLast = true; + exit(); + } + function toJSON() { + commitPendingMapping(); + return { + version: 3, + file: file, + sourceRoot: sourceRoot, + sources: sources, + names: names, + mappings: mappings, + sourcesContent: sourcesContent, + }; + } + } + ts.createSourceMapGenerator = createSourceMapGenerator; + // Sometimes tools can see the following line as a source mapping url comment, so we mangle it a bit (the [M]) + var sourceMapCommentRegExp = /^\/\/[@#] source[M]appingURL=(.+)\s*$/; + var whitespaceOrMapCommentRegExp = /^\s*(\/\/[@#] .*)?$/; + function getLineInfo(text, lineStarts) { + return { + getLineCount: function () { return lineStarts.length; }, + getLineText: function (line) { return text.substring(lineStarts[line], lineStarts[line + 1]); } + }; + } + ts.getLineInfo = getLineInfo; + /** + * Tries to find the sourceMappingURL comment at the end of a file. + */ + function tryGetSourceMappingURL(lineInfo) { + for (var index = lineInfo.getLineCount() - 1; index >= 0; index--) { + var line = lineInfo.getLineText(index); + var comment = sourceMapCommentRegExp.exec(line); + if (comment) { + return comment[1]; + } + // If we see a non-whitespace/map comment-like line, break, to avoid scanning up the entire file + else if (!line.match(whitespaceOrMapCommentRegExp)) { + break; + } + } + } + ts.tryGetSourceMappingURL = tryGetSourceMappingURL; + /* eslint-disable no-null/no-null */ + function isStringOrNull(x) { + return typeof x === "string" || x === null; + } + function isRawSourceMap(x) { + return x !== null + && typeof x === "object" + && x.version === 3 + && typeof x.file === "string" + && typeof x.mappings === "string" + && ts.isArray(x.sources) && ts.every(x.sources, ts.isString) + && (x.sourceRoot === undefined || x.sourceRoot === null || typeof x.sourceRoot === "string") + && (x.sourcesContent === undefined || x.sourcesContent === null || ts.isArray(x.sourcesContent) && ts.every(x.sourcesContent, isStringOrNull)) + && (x.names === undefined || x.names === null || ts.isArray(x.names) && ts.every(x.names, ts.isString)); + } + ts.isRawSourceMap = isRawSourceMap; + /* eslint-enable no-null/no-null */ + function tryParseRawSourceMap(text) { + try { + var parsed = JSON.parse(text); + if (isRawSourceMap(parsed)) { + return parsed; + } + } + catch (_a) { + // empty + } + return undefined; + } + ts.tryParseRawSourceMap = tryParseRawSourceMap; + function decodeMappings(mappings) { + var done = false; + var pos = 0; + var generatedLine = 0; + var generatedCharacter = 0; + var sourceIndex = 0; + var sourceLine = 0; + var sourceCharacter = 0; + var nameIndex = 0; + var error; + return { + get pos() { return pos; }, + get error() { return error; }, + get state() { return captureMapping(/*hasSource*/ true, /*hasName*/ true); }, + next: function () { + while (!done && pos < mappings.length) { + var ch = mappings.charCodeAt(pos); + if (ch === 59 /* semicolon */) { + // new line + generatedLine++; + generatedCharacter = 0; + pos++; + continue; + } + if (ch === 44 /* comma */) { + // Next entry is on same line - no action needed + pos++; + continue; + } + var hasSource = false; + var hasName = false; + generatedCharacter += base64VLQFormatDecode(); + if (hasReportedError()) + return stopIterating(); + if (generatedCharacter < 0) + return setErrorAndStopIterating("Invalid generatedCharacter found"); + if (!isSourceMappingSegmentEnd()) { + hasSource = true; + sourceIndex += base64VLQFormatDecode(); + if (hasReportedError()) + return stopIterating(); + if (sourceIndex < 0) + return setErrorAndStopIterating("Invalid sourceIndex found"); + if (isSourceMappingSegmentEnd()) + return setErrorAndStopIterating("Unsupported Format: No entries after sourceIndex"); + sourceLine += base64VLQFormatDecode(); + if (hasReportedError()) + return stopIterating(); + if (sourceLine < 0) + return setErrorAndStopIterating("Invalid sourceLine found"); + if (isSourceMappingSegmentEnd()) + return setErrorAndStopIterating("Unsupported Format: No entries after sourceLine"); + sourceCharacter += base64VLQFormatDecode(); + if (hasReportedError()) + return stopIterating(); + if (sourceCharacter < 0) + return setErrorAndStopIterating("Invalid sourceCharacter found"); + if (!isSourceMappingSegmentEnd()) { + hasName = true; + nameIndex += base64VLQFormatDecode(); + if (hasReportedError()) + return stopIterating(); + if (nameIndex < 0) + return setErrorAndStopIterating("Invalid nameIndex found"); + if (!isSourceMappingSegmentEnd()) + return setErrorAndStopIterating("Unsupported Error Format: Entries after nameIndex"); + } + } + return { value: captureMapping(hasSource, hasName), done: done }; + } + return stopIterating(); + } + }; + function captureMapping(hasSource, hasName) { + return { + generatedLine: generatedLine, + generatedCharacter: generatedCharacter, + sourceIndex: hasSource ? sourceIndex : undefined, + sourceLine: hasSource ? sourceLine : undefined, + sourceCharacter: hasSource ? sourceCharacter : undefined, + nameIndex: hasName ? nameIndex : undefined + }; + } + function stopIterating() { + done = true; + return { value: undefined, done: true }; + } + function setError(message) { + if (error === undefined) { + error = message; + } + } + function setErrorAndStopIterating(message) { + setError(message); + return stopIterating(); + } + function hasReportedError() { + return error !== undefined; + } + function isSourceMappingSegmentEnd() { + return (pos === mappings.length || + mappings.charCodeAt(pos) === 44 /* comma */ || + mappings.charCodeAt(pos) === 59 /* semicolon */); + } + function base64VLQFormatDecode() { + var moreDigits = true; + var shiftCount = 0; + var value = 0; + for (; moreDigits; pos++) { + if (pos >= mappings.length) + return setError("Error in decoding base64VLQFormatDecode, past the mapping string"), -1; + // 6 digit number + var currentByte = base64FormatDecode(mappings.charCodeAt(pos)); + if (currentByte === -1) + return setError("Invalid character in VLQ"), -1; + // If msb is set, we still have more bits to continue + moreDigits = (currentByte & 32) !== 0; + // least significant 5 bits are the next msbs in the final value. + value = value | ((currentByte & 31) << shiftCount); + shiftCount += 5; + } + // Least significant bit if 1 represents negative and rest of the msb is actual absolute value + if ((value & 1) === 0) { + // + number + value = value >> 1; + } + else { + // - number + value = value >> 1; + value = -value; + } + return value; + } + } + ts.decodeMappings = decodeMappings; + function sameMapping(left, right) { + return left === right + || left.generatedLine === right.generatedLine + && left.generatedCharacter === right.generatedCharacter + && left.sourceIndex === right.sourceIndex + && left.sourceLine === right.sourceLine + && left.sourceCharacter === right.sourceCharacter + && left.nameIndex === right.nameIndex; + } + ts.sameMapping = sameMapping; + function isSourceMapping(mapping) { + return mapping.sourceIndex !== undefined + && mapping.sourceLine !== undefined + && mapping.sourceCharacter !== undefined; + } + ts.isSourceMapping = isSourceMapping; + function base64FormatEncode(value) { + return value >= 0 && value < 26 ? 65 /* A */ + value : + value >= 26 && value < 52 ? 97 /* a */ + value - 26 : + value >= 52 && value < 62 ? 48 /* _0 */ + value - 52 : + value === 62 ? 43 /* plus */ : + value === 63 ? 47 /* slash */ : + ts.Debug.fail(value + ": not a base64 value"); + } + function base64FormatDecode(ch) { + return ch >= 65 /* A */ && ch <= 90 /* Z */ ? ch - 65 /* A */ : + ch >= 97 /* a */ && ch <= 122 /* z */ ? ch - 97 /* a */ + 26 : + ch >= 48 /* _0 */ && ch <= 57 /* _9 */ ? ch - 48 /* _0 */ + 52 : + ch === 43 /* plus */ ? 62 : + ch === 47 /* slash */ ? 63 : + -1; + } + function base64VLQFormatEncode(inValue) { + // Add a new least significant bit that has the sign of the value. + // if negative number the least significant bit that gets added to the number has value 1 + // else least significant bit value that gets added is 0 + // eg. -1 changes to binary : 01 [1] => 3 + // +1 changes to binary : 01 [0] => 2 + if (inValue < 0) { + inValue = ((-inValue) << 1) + 1; + } + else { + inValue = inValue << 1; + } + // Encode 5 bits at a time starting from least significant bits + var encodedStr = ""; + do { + var currentDigit = inValue & 31; // 11111 + inValue = inValue >> 5; + if (inValue > 0) { + // There are still more digits to decode, set the msb (6th bit) + currentDigit = currentDigit | 32; + } + encodedStr = encodedStr + String.fromCharCode(base64FormatEncode(currentDigit)); + } while (inValue > 0); + return encodedStr; + } + function isSourceMappedPosition(value) { + return value.sourceIndex !== undefined + && value.sourcePosition !== undefined; + } + function sameMappedPosition(left, right) { + return left.generatedPosition === right.generatedPosition + && left.sourceIndex === right.sourceIndex + && left.sourcePosition === right.sourcePosition; + } + function compareSourcePositions(left, right) { + // Compares sourcePosition without comparing sourceIndex + // since the mappings are grouped by sourceIndex + ts.Debug.assert(left.sourceIndex === right.sourceIndex); + return ts.compareValues(left.sourcePosition, right.sourcePosition); + } + function compareGeneratedPositions(left, right) { + return ts.compareValues(left.generatedPosition, right.generatedPosition); + } + function getSourcePositionOfMapping(value) { + return value.sourcePosition; + } + function getGeneratedPositionOfMapping(value) { + return value.generatedPosition; + } + function createDocumentPositionMapper(host, map, mapPath) { + var mapDirectory = ts.getDirectoryPath(mapPath); + var sourceRoot = map.sourceRoot ? ts.getNormalizedAbsolutePath(map.sourceRoot, mapDirectory) : mapDirectory; + var generatedAbsoluteFilePath = ts.getNormalizedAbsolutePath(map.file, mapDirectory); + var generatedFile = host.getSourceFileLike(generatedAbsoluteFilePath); + var sourceFileAbsolutePaths = map.sources.map(function (source) { return ts.getNormalizedAbsolutePath(source, sourceRoot); }); + var sourceToSourceIndexMap = ts.createMapFromEntries(sourceFileAbsolutePaths.map(function (source, i) { return [host.getCanonicalFileName(source), i]; })); + var decodedMappings; + var generatedMappings; + var sourceMappings; + return { + getSourcePosition: getSourcePosition, + getGeneratedPosition: getGeneratedPosition + }; + function processMapping(mapping) { + var generatedPosition = generatedFile !== undefined + ? ts.getPositionOfLineAndCharacter(generatedFile, mapping.generatedLine, mapping.generatedCharacter, /*allowEdits*/ true) + : -1; + var source; + var sourcePosition; + if (isSourceMapping(mapping)) { + var sourceFile = host.getSourceFileLike(sourceFileAbsolutePaths[mapping.sourceIndex]); + source = map.sources[mapping.sourceIndex]; + sourcePosition = sourceFile !== undefined + ? ts.getPositionOfLineAndCharacter(sourceFile, mapping.sourceLine, mapping.sourceCharacter, /*allowEdits*/ true) + : -1; + } + return { + generatedPosition: generatedPosition, + source: source, + sourceIndex: mapping.sourceIndex, + sourcePosition: sourcePosition, + nameIndex: mapping.nameIndex + }; + } + function getDecodedMappings() { + if (decodedMappings === undefined) { + var decoder = decodeMappings(map.mappings); + var mappings = ts.arrayFrom(decoder, processMapping); + if (decoder.error !== undefined) { + if (host.log) { + host.log("Encountered error while decoding sourcemap: " + decoder.error); + } + decodedMappings = ts.emptyArray; + } + else { + decodedMappings = mappings; + } + } + return decodedMappings; + } + function getSourceMappings(sourceIndex) { + if (sourceMappings === undefined) { + var lists = []; + for (var _i = 0, _a = getDecodedMappings(); _i < _a.length; _i++) { + var mapping = _a[_i]; + if (!isSourceMappedPosition(mapping)) + continue; + var list = lists[mapping.sourceIndex]; + if (!list) + lists[mapping.sourceIndex] = list = []; + list.push(mapping); + } + sourceMappings = lists.map(function (list) { return ts.sortAndDeduplicate(list, compareSourcePositions, sameMappedPosition); }); + } + return sourceMappings[sourceIndex]; + } + function getGeneratedMappings() { + if (generatedMappings === undefined) { + var list = []; + for (var _i = 0, _a = getDecodedMappings(); _i < _a.length; _i++) { + var mapping = _a[_i]; + list.push(mapping); + } + generatedMappings = ts.sortAndDeduplicate(list, compareGeneratedPositions, sameMappedPosition); + } + return generatedMappings; + } + function getGeneratedPosition(loc) { + var sourceIndex = sourceToSourceIndexMap.get(host.getCanonicalFileName(loc.fileName)); + if (sourceIndex === undefined) + return loc; + var sourceMappings = getSourceMappings(sourceIndex); + if (!ts.some(sourceMappings)) + return loc; + var targetIndex = ts.binarySearchKey(sourceMappings, loc.pos, getSourcePositionOfMapping, ts.compareValues); + if (targetIndex < 0) { + // if no exact match, closest is 2's complement of result + targetIndex = ~targetIndex; + } + var mapping = sourceMappings[targetIndex]; + if (mapping === undefined || mapping.sourceIndex !== sourceIndex) { + return loc; + } + return { fileName: generatedAbsoluteFilePath, pos: mapping.generatedPosition }; // Closest pos + } + function getSourcePosition(loc) { + var generatedMappings = getGeneratedMappings(); + if (!ts.some(generatedMappings)) + return loc; + var targetIndex = ts.binarySearchKey(generatedMappings, loc.pos, getGeneratedPositionOfMapping, ts.compareValues); + if (targetIndex < 0) { + // if no exact match, closest is 2's complement of result + targetIndex = ~targetIndex; + } + var mapping = generatedMappings[targetIndex]; + if (mapping === undefined || !isSourceMappedPosition(mapping)) { + return loc; + } + return { fileName: sourceFileAbsolutePaths[mapping.sourceIndex], pos: mapping.sourcePosition }; // Closest pos + } + } + ts.createDocumentPositionMapper = createDocumentPositionMapper; + ts.identitySourceMapConsumer = { + getSourcePosition: ts.identity, + getGeneratedPosition: ts.identity + }; +})(ts || (ts = {})); +/* @internal */ +var ts; +(function (ts) { + function getOriginalNodeId(node) { + node = ts.getOriginalNode(node); + return node ? ts.getNodeId(node) : 0; + } + ts.getOriginalNodeId = getOriginalNodeId; + function containsDefaultReference(node) { + if (!node) + return false; + if (!ts.isNamedImports(node)) + return false; + return ts.some(node.elements, isNamedDefaultReference); + } + function isNamedDefaultReference(e) { + return e.propertyName !== undefined && e.propertyName.escapedText === "default" /* Default */; + } + function chainBundle(transformSourceFile) { + return transformSourceFileOrBundle; + function transformSourceFileOrBundle(node) { + return node.kind === 290 /* SourceFile */ ? transformSourceFile(node) : transformBundle(node); + } + function transformBundle(node) { + return ts.createBundle(ts.map(node.sourceFiles, transformSourceFile), node.prepends); + } + } + ts.chainBundle = chainBundle; + function getExportNeedsImportStarHelper(node) { + return !!ts.getNamespaceDeclarationNode(node); + } + ts.getExportNeedsImportStarHelper = getExportNeedsImportStarHelper; + function getImportNeedsImportStarHelper(node) { + if (!!ts.getNamespaceDeclarationNode(node)) { + return true; + } + var bindings = node.importClause && node.importClause.namedBindings; + if (!bindings) { + return false; + } + if (!ts.isNamedImports(bindings)) + return false; + var defaultRefCount = 0; + for (var _i = 0, _a = bindings.elements; _i < _a.length; _i++) { + var binding = _a[_i]; + if (isNamedDefaultReference(binding)) { + defaultRefCount++; + } + } + // Import star is required if there's default named refs mixed with non-default refs, or if theres non-default refs and it has a default import + return (defaultRefCount > 0 && defaultRefCount !== bindings.elements.length) || (!!(bindings.elements.length - defaultRefCount) && ts.isDefaultImport(node)); + } + ts.getImportNeedsImportStarHelper = getImportNeedsImportStarHelper; + function getImportNeedsImportDefaultHelper(node) { + // Import default is needed if there's a default import or a default ref and no other refs (meaning an import star helper wasn't requested) + return !getImportNeedsImportStarHelper(node) && (ts.isDefaultImport(node) || (!!node.importClause && ts.isNamedImports(node.importClause.namedBindings) && containsDefaultReference(node.importClause.namedBindings))); // TODO: GH#18217 + } + ts.getImportNeedsImportDefaultHelper = getImportNeedsImportDefaultHelper; + function collectExternalModuleInfo(sourceFile, resolver, compilerOptions) { + var externalImports = []; + var exportSpecifiers = ts.createMultiMap(); + var exportedBindings = []; + var uniqueExports = ts.createMap(); + var exportedNames; + var hasExportDefault = false; + var exportEquals; + var hasExportStarsToExportValues = false; + var hasImportStar = false; + var hasImportDefault = false; + for (var _i = 0, _a = sourceFile.statements; _i < _a.length; _i++) { + var node = _a[_i]; + switch (node.kind) { + case 254 /* ImportDeclaration */: + // import "mod" + // import x from "mod" + // import * as x from "mod" + // import { x, y } from "mod" + externalImports.push(node); + if (!hasImportStar && getImportNeedsImportStarHelper(node)) { + hasImportStar = true; + } + if (!hasImportDefault && getImportNeedsImportDefaultHelper(node)) { + hasImportDefault = true; + } + break; + case 253 /* ImportEqualsDeclaration */: + if (node.moduleReference.kind === 265 /* ExternalModuleReference */) { + // import x = require("mod") + externalImports.push(node); + } + break; + case 260 /* ExportDeclaration */: + if (node.moduleSpecifier) { + if (!node.exportClause) { + // export * from "mod" + externalImports.push(node); + hasExportStarsToExportValues = true; + } + else { + // export * as ns from "mod" + // export { x, y } from "mod" + externalImports.push(node); + } + } + else { + // export { x, y } + for (var _b = 0, _c = ts.cast(node.exportClause, ts.isNamedExports).elements; _b < _c.length; _b++) { + var specifier = _c[_b]; + if (!uniqueExports.get(ts.idText(specifier.name))) { + var name = specifier.propertyName || specifier.name; + exportSpecifiers.add(ts.idText(name), specifier); + var decl = resolver.getReferencedImportDeclaration(name) + || resolver.getReferencedValueDeclaration(name); + if (decl) { + multiMapSparseArrayAdd(exportedBindings, getOriginalNodeId(decl), specifier.name); + } + uniqueExports.set(ts.idText(specifier.name), true); + exportedNames = ts.append(exportedNames, specifier.name); + } + } + } + break; + case 259 /* ExportAssignment */: + if (node.isExportEquals && !exportEquals) { + // export = x + exportEquals = node; + } + break; + case 225 /* VariableStatement */: + if (ts.hasModifier(node, 1 /* Export */)) { + for (var _d = 0, _e = node.declarationList.declarations; _d < _e.length; _d++) { + var decl = _e[_d]; + exportedNames = collectExportedVariableInfo(decl, uniqueExports, exportedNames); + } + } + break; + case 244 /* FunctionDeclaration */: + if (ts.hasModifier(node, 1 /* Export */)) { + if (ts.hasModifier(node, 512 /* Default */)) { + // export default function() { } + if (!hasExportDefault) { + multiMapSparseArrayAdd(exportedBindings, getOriginalNodeId(node), ts.getDeclarationName(node)); + hasExportDefault = true; + } + } + else { + // export function x() { } + var name = node.name; + if (!uniqueExports.get(ts.idText(name))) { + multiMapSparseArrayAdd(exportedBindings, getOriginalNodeId(node), name); + uniqueExports.set(ts.idText(name), true); + exportedNames = ts.append(exportedNames, name); + } + } + } + break; + case 245 /* ClassDeclaration */: + if (ts.hasModifier(node, 1 /* Export */)) { + if (ts.hasModifier(node, 512 /* Default */)) { + // export default class { } + if (!hasExportDefault) { + multiMapSparseArrayAdd(exportedBindings, getOriginalNodeId(node), ts.getDeclarationName(node)); + hasExportDefault = true; + } + } + else { + // export class x { } + var name = node.name; + if (name && !uniqueExports.get(ts.idText(name))) { + multiMapSparseArrayAdd(exportedBindings, getOriginalNodeId(node), name); + uniqueExports.set(ts.idText(name), true); + exportedNames = ts.append(exportedNames, name); + } + } + } + break; + } + } + var externalHelpersImportDeclaration = ts.createExternalHelpersImportDeclarationIfNeeded(sourceFile, compilerOptions, hasExportStarsToExportValues, hasImportStar, hasImportDefault); + if (externalHelpersImportDeclaration) { + externalImports.unshift(externalHelpersImportDeclaration); + } + return { externalImports: externalImports, exportSpecifiers: exportSpecifiers, exportEquals: exportEquals, hasExportStarsToExportValues: hasExportStarsToExportValues, exportedBindings: exportedBindings, exportedNames: exportedNames, externalHelpersImportDeclaration: externalHelpersImportDeclaration }; + } + ts.collectExternalModuleInfo = collectExternalModuleInfo; + function collectExportedVariableInfo(decl, uniqueExports, exportedNames) { + if (ts.isBindingPattern(decl.name)) { + for (var _i = 0, _a = decl.name.elements; _i < _a.length; _i++) { + var element = _a[_i]; + if (!ts.isOmittedExpression(element)) { + exportedNames = collectExportedVariableInfo(element, uniqueExports, exportedNames); + } + } + } + else if (!ts.isGeneratedIdentifier(decl.name)) { + var text = ts.idText(decl.name); + if (!uniqueExports.get(text)) { + uniqueExports.set(text, true); + exportedNames = ts.append(exportedNames, decl.name); + } + } + return exportedNames; + } + /** Use a sparse array as a multi-map. */ + function multiMapSparseArrayAdd(map, key, value) { + var values = map[key]; + if (values) { + values.push(value); + } + else { + map[key] = values = [value]; + } + return values; + } + /** + * Used in the module transformer to check if an expression is reasonably without sideeffect, + * and thus better to copy into multiple places rather than to cache in a temporary variable + * - this is mostly subjective beyond the requirement that the expression not be sideeffecting + */ + function isSimpleCopiableExpression(expression) { + return ts.isStringLiteralLike(expression) || + expression.kind === 8 /* NumericLiteral */ || + ts.isKeyword(expression.kind) || + ts.isIdentifier(expression); + } + ts.isSimpleCopiableExpression = isSimpleCopiableExpression; + /** + * A simple inlinable expression is an expression which can be copied into multiple locations + * without risk of repeating any sideeffects and whose value could not possibly change between + * any such locations + */ + function isSimpleInlineableExpression(expression) { + return !ts.isIdentifier(expression) && isSimpleCopiableExpression(expression) || + ts.isWellKnownSymbolSyntactically(expression); + } + ts.isSimpleInlineableExpression = isSimpleInlineableExpression; + function isCompoundAssignment(kind) { + return kind >= 63 /* FirstCompoundAssignment */ + && kind <= 74 /* LastCompoundAssignment */; + } + ts.isCompoundAssignment = isCompoundAssignment; + function getNonAssignmentOperatorForCompoundAssignment(kind) { + switch (kind) { + case 63 /* PlusEqualsToken */: return 39 /* PlusToken */; + case 64 /* MinusEqualsToken */: return 40 /* MinusToken */; + case 65 /* AsteriskEqualsToken */: return 41 /* AsteriskToken */; + case 66 /* AsteriskAsteriskEqualsToken */: return 42 /* AsteriskAsteriskToken */; + case 67 /* SlashEqualsToken */: return 43 /* SlashToken */; + case 68 /* PercentEqualsToken */: return 44 /* PercentToken */; + case 69 /* LessThanLessThanEqualsToken */: return 47 /* LessThanLessThanToken */; + case 70 /* GreaterThanGreaterThanEqualsToken */: return 48 /* GreaterThanGreaterThanToken */; + case 71 /* GreaterThanGreaterThanGreaterThanEqualsToken */: return 49 /* GreaterThanGreaterThanGreaterThanToken */; + case 72 /* AmpersandEqualsToken */: return 50 /* AmpersandToken */; + case 73 /* BarEqualsToken */: return 51 /* BarToken */; + case 74 /* CaretEqualsToken */: return 52 /* CaretToken */; + } + } + ts.getNonAssignmentOperatorForCompoundAssignment = getNonAssignmentOperatorForCompoundAssignment; + /** + * Adds super call and preceding prologue directives into the list of statements. + * + * @param ctor The constructor node. + * @param result The list of statements. + * @param visitor The visitor to apply to each node added to the result array. + * @returns index of the statement that follows super call + */ + function addPrologueDirectivesAndInitialSuperCall(ctor, result, visitor) { + if (ctor.body) { + var statements = ctor.body.statements; + // add prologue directives to the list (if any) + var index = ts.addPrologue(result, statements, /*ensureUseStrict*/ false, visitor); + if (index === statements.length) { + // list contains nothing but prologue directives (or empty) - exit + return index; + } + var superIndex = ts.findIndex(statements, function (s) { return ts.isExpressionStatement(s) && ts.isSuperCall(s.expression); }, index); + if (superIndex > -1) { + for (var i = index; i <= superIndex; i++) { + result.push(ts.visitNode(statements[i], visitor, ts.isStatement)); + } + return superIndex + 1; + } + return index; + } + return 0; + } + ts.addPrologueDirectivesAndInitialSuperCall = addPrologueDirectivesAndInitialSuperCall; + /** + * @param input Template string input strings + * @param args Names which need to be made file-level unique + */ + function helperString(input) { + var args = []; + for (var _i = 1; _i < arguments.length; _i++) { + args[_i - 1] = arguments[_i]; + } + return function (uniqueName) { + var result = ""; + for (var i = 0; i < args.length; i++) { + result += input[i]; + result += uniqueName(args[i]); + } + result += input[input.length - 1]; + return result; + }; + } + ts.helperString = helperString; + /** + * Gets all the static or all the instance property declarations of a class + * + * @param node The class node. + * @param isStatic A value indicating whether to get properties from the static or instance side of the class. + */ + function getProperties(node, requireInitializer, isStatic) { + return ts.filter(node.members, function (m) { return isInitializedOrStaticProperty(m, requireInitializer, isStatic); }); + } + ts.getProperties = getProperties; + /** + * Is a class element either a static or an instance property declaration with an initializer? + * + * @param member The class element node. + * @param isStatic A value indicating whether the member should be a static or instance member. + */ + function isInitializedOrStaticProperty(member, requireInitializer, isStatic) { + return ts.isPropertyDeclaration(member) + && (!!member.initializer || !requireInitializer) + && ts.hasStaticModifier(member) === isStatic; + } + /** + * Gets a value indicating whether a class element is either a static or an instance property declaration with an initializer. + * + * @param member The class element node. + * @param isStatic A value indicating whether the member should be a static or instance member. + */ + function isInitializedProperty(member) { + return member.kind === 159 /* PropertyDeclaration */ + && member.initializer !== undefined; + } + ts.isInitializedProperty = isInitializedProperty; +})(ts || (ts = {})); +/*@internal*/ +var ts; +(function (ts) { + var FlattenLevel; + (function (FlattenLevel) { + FlattenLevel[FlattenLevel["All"] = 0] = "All"; + FlattenLevel[FlattenLevel["ObjectRest"] = 1] = "ObjectRest"; + })(FlattenLevel = ts.FlattenLevel || (ts.FlattenLevel = {})); + /** + * Flattens a DestructuringAssignment or a VariableDeclaration to an expression. + * + * @param node The node to flatten. + * @param visitor An optional visitor used to visit initializers. + * @param context The transformation context. + * @param level Indicates the extent to which flattening should occur. + * @param needsValue An optional value indicating whether the value from the right-hand-side of + * the destructuring assignment is needed as part of a larger expression. + * @param createAssignmentCallback An optional callback used to create the assignment expression. + */ + function flattenDestructuringAssignment(node, visitor, context, level, needsValue, createAssignmentCallback) { + var location = node; + var value; + if (ts.isDestructuringAssignment(node)) { + value = node.right; + while (ts.isEmptyArrayLiteral(node.left) || ts.isEmptyObjectLiteral(node.left)) { + if (ts.isDestructuringAssignment(value)) { + location = node = value; + value = node.right; + } + else { + return ts.visitNode(value, visitor, ts.isExpression); + } + } + } + var expressions; + var flattenContext = { + context: context, + level: level, + downlevelIteration: !!context.getCompilerOptions().downlevelIteration, + hoistTempVariables: true, + emitExpression: emitExpression, + emitBindingOrAssignment: emitBindingOrAssignment, + createArrayBindingOrAssignmentPattern: makeArrayAssignmentPattern, + createObjectBindingOrAssignmentPattern: makeObjectAssignmentPattern, + createArrayBindingOrAssignmentElement: makeAssignmentElement, + visitor: visitor + }; + if (value) { + value = ts.visitNode(value, visitor, ts.isExpression); + if (ts.isIdentifier(value) && bindingOrAssignmentElementAssignsToName(node, value.escapedText) || + bindingOrAssignmentElementContainsNonLiteralComputedName(node)) { + // If the right-hand value of the assignment is also an assignment target then + // we need to cache the right-hand value. + value = ensureIdentifier(flattenContext, value, /*reuseIdentifierExpressions*/ false, location); + } + else if (needsValue) { + // If the right-hand value of the destructuring assignment needs to be preserved (as + // is the case when the destructuring assignment is part of a larger expression), + // then we need to cache the right-hand value. + // + // The source map location for the assignment should point to the entire binary + // expression. + value = ensureIdentifier(flattenContext, value, /*reuseIdentifierExpressions*/ true, location); + } + else if (ts.nodeIsSynthesized(node)) { + // Generally, the source map location for a destructuring assignment is the root + // expression. + // + // However, if the root expression is synthesized (as in the case + // of the initializer when transforming a ForOfStatement), then the source map + // location should point to the right-hand value of the expression. + location = value; + } + } + flattenBindingOrAssignmentElement(flattenContext, node, value, location, /*skipInitializer*/ ts.isDestructuringAssignment(node)); + if (value && needsValue) { + if (!ts.some(expressions)) { + return value; + } + expressions.push(value); + } + return ts.aggregateTransformFlags(ts.inlineExpressions(expressions)) || ts.createOmittedExpression(); + function emitExpression(expression) { + ts.aggregateTransformFlags(expression); + expressions = ts.append(expressions, expression); + } + function emitBindingOrAssignment(target, value, location, original) { + ts.Debug.assertNode(target, createAssignmentCallback ? ts.isIdentifier : ts.isExpression); + var expression = createAssignmentCallback + ? createAssignmentCallback(target, value, location) + : ts.setTextRange(ts.createAssignment(ts.visitNode(target, visitor, ts.isExpression), value), location); + expression.original = original; + emitExpression(expression); + } + } + ts.flattenDestructuringAssignment = flattenDestructuringAssignment; + function bindingOrAssignmentElementAssignsToName(element, escapedName) { + var target = ts.getTargetOfBindingOrAssignmentElement(element); // TODO: GH#18217 + if (ts.isBindingOrAssignmentPattern(target)) { + return bindingOrAssignmentPatternAssignsToName(target, escapedName); + } + else if (ts.isIdentifier(target)) { + return target.escapedText === escapedName; + } + return false; + } + function bindingOrAssignmentPatternAssignsToName(pattern, escapedName) { + var elements = ts.getElementsOfBindingOrAssignmentPattern(pattern); + for (var _i = 0, elements_3 = elements; _i < elements_3.length; _i++) { + var element = elements_3[_i]; + if (bindingOrAssignmentElementAssignsToName(element, escapedName)) { + return true; + } + } + return false; + } + function bindingOrAssignmentElementContainsNonLiteralComputedName(element) { + var propertyName = ts.tryGetPropertyNameOfBindingOrAssignmentElement(element); + if (propertyName && ts.isComputedPropertyName(propertyName) && !ts.isLiteralExpression(propertyName.expression)) { + return true; + } + var target = ts.getTargetOfBindingOrAssignmentElement(element); + return !!target && ts.isBindingOrAssignmentPattern(target) && bindingOrAssignmentPatternContainsNonLiteralComputedName(target); + } + function bindingOrAssignmentPatternContainsNonLiteralComputedName(pattern) { + return !!ts.forEach(ts.getElementsOfBindingOrAssignmentPattern(pattern), bindingOrAssignmentElementContainsNonLiteralComputedName); + } + /** + * Flattens a VariableDeclaration or ParameterDeclaration to one or more variable declarations. + * + * @param node The node to flatten. + * @param visitor An optional visitor used to visit initializers. + * @param context The transformation context. + * @param boundValue The value bound to the declaration. + * @param skipInitializer A value indicating whether to ignore the initializer of `node`. + * @param hoistTempVariables Indicates whether temporary variables should not be recorded in-line. + * @param level Indicates the extent to which flattening should occur. + */ + function flattenDestructuringBinding(node, visitor, context, level, rval, hoistTempVariables, skipInitializer) { + if (hoistTempVariables === void 0) { hoistTempVariables = false; } + var pendingExpressions; + var pendingDeclarations = []; + var declarations = []; + var flattenContext = { + context: context, + level: level, + downlevelIteration: !!context.getCompilerOptions().downlevelIteration, + hoistTempVariables: hoistTempVariables, + emitExpression: emitExpression, + emitBindingOrAssignment: emitBindingOrAssignment, + createArrayBindingOrAssignmentPattern: makeArrayBindingPattern, + createObjectBindingOrAssignmentPattern: makeObjectBindingPattern, + createArrayBindingOrAssignmentElement: makeBindingElement, + visitor: visitor + }; + if (ts.isVariableDeclaration(node)) { + var initializer = ts.getInitializerOfBindingOrAssignmentElement(node); + if (initializer && (ts.isIdentifier(initializer) && bindingOrAssignmentElementAssignsToName(node, initializer.escapedText) || + bindingOrAssignmentElementContainsNonLiteralComputedName(node))) { + // If the right-hand value of the assignment is also an assignment target then + // we need to cache the right-hand value. + initializer = ensureIdentifier(flattenContext, initializer, /*reuseIdentifierExpressions*/ false, initializer); + node = ts.updateVariableDeclaration(node, node.name, node.type, initializer); + } + } + flattenBindingOrAssignmentElement(flattenContext, node, rval, node, skipInitializer); + if (pendingExpressions) { + var temp = ts.createTempVariable(/*recordTempVariable*/ undefined); + if (hoistTempVariables) { + var value = ts.inlineExpressions(pendingExpressions); + pendingExpressions = undefined; + emitBindingOrAssignment(temp, value, /*location*/ undefined, /*original*/ undefined); + } + else { + context.hoistVariableDeclaration(temp); + var pendingDeclaration = ts.last(pendingDeclarations); + pendingDeclaration.pendingExpressions = ts.append(pendingDeclaration.pendingExpressions, ts.createAssignment(temp, pendingDeclaration.value)); + ts.addRange(pendingDeclaration.pendingExpressions, pendingExpressions); + pendingDeclaration.value = temp; + } + } + for (var _i = 0, pendingDeclarations_1 = pendingDeclarations; _i < pendingDeclarations_1.length; _i++) { + var _a = pendingDeclarations_1[_i], pendingExpressions_1 = _a.pendingExpressions, name = _a.name, value = _a.value, location = _a.location, original = _a.original; + var variable = ts.createVariableDeclaration(name, + /*type*/ undefined, pendingExpressions_1 ? ts.inlineExpressions(ts.append(pendingExpressions_1, value)) : value); + variable.original = original; + ts.setTextRange(variable, location); + ts.aggregateTransformFlags(variable); + declarations.push(variable); + } + return declarations; + function emitExpression(value) { + pendingExpressions = ts.append(pendingExpressions, value); + } + function emitBindingOrAssignment(target, value, location, original) { + ts.Debug.assertNode(target, ts.isBindingName); + if (pendingExpressions) { + value = ts.inlineExpressions(ts.append(pendingExpressions, value)); + pendingExpressions = undefined; + } + pendingDeclarations.push({ pendingExpressions: pendingExpressions, name: target, value: value, location: location, original: original }); + } + } + ts.flattenDestructuringBinding = flattenDestructuringBinding; + /** + * Flattens a BindingOrAssignmentElement into zero or more bindings or assignments. + * + * @param flattenContext Options used to control flattening. + * @param element The element to flatten. + * @param value The current RHS value to assign to the element. + * @param location The location to use for source maps and comments. + * @param skipInitializer An optional value indicating whether to include the initializer + * for the element. + */ + function flattenBindingOrAssignmentElement(flattenContext, element, value, location, skipInitializer) { + if (!skipInitializer) { + var initializer = ts.visitNode(ts.getInitializerOfBindingOrAssignmentElement(element), flattenContext.visitor, ts.isExpression); + if (initializer) { + // Combine value and initializer + value = value ? createDefaultValueCheck(flattenContext, value, initializer, location) : initializer; + } + else if (!value) { + // Use 'void 0' in absence of value and initializer + value = ts.createVoidZero(); + } + } + var bindingTarget = ts.getTargetOfBindingOrAssignmentElement(element); // TODO: GH#18217 + if (ts.isObjectBindingOrAssignmentPattern(bindingTarget)) { + flattenObjectBindingOrAssignmentPattern(flattenContext, element, bindingTarget, value, location); + } + else if (ts.isArrayBindingOrAssignmentPattern(bindingTarget)) { + flattenArrayBindingOrAssignmentPattern(flattenContext, element, bindingTarget, value, location); + } + else { + flattenContext.emitBindingOrAssignment(bindingTarget, value, location, /*original*/ element); // TODO: GH#18217 + } + } + /** + * Flattens an ObjectBindingOrAssignmentPattern into zero or more bindings or assignments. + * + * @param flattenContext Options used to control flattening. + * @param parent The parent element of the pattern. + * @param pattern The ObjectBindingOrAssignmentPattern to flatten. + * @param value The current RHS value to assign to the element. + * @param location The location to use for source maps and comments. + */ + function flattenObjectBindingOrAssignmentPattern(flattenContext, parent, pattern, value, location) { + var elements = ts.getElementsOfBindingOrAssignmentPattern(pattern); + var numElements = elements.length; + if (numElements !== 1) { + // For anything other than a single-element destructuring we need to generate a temporary + // to ensure value is evaluated exactly once. Additionally, if we have zero elements + // we need to emit *something* to ensure that in case a 'var' keyword was already emitted, + // so in that case, we'll intentionally create that temporary. + var reuseIdentifierExpressions = !ts.isDeclarationBindingElement(parent) || numElements !== 0; + value = ensureIdentifier(flattenContext, value, reuseIdentifierExpressions, location); + } + var bindingElements; + var computedTempVariables; + for (var i = 0; i < numElements; i++) { + var element = elements[i]; + if (!ts.getRestIndicatorOfBindingOrAssignmentElement(element)) { + var propertyName = ts.getPropertyNameOfBindingOrAssignmentElement(element); + if (flattenContext.level >= 1 /* ObjectRest */ + && !(element.transformFlags & (8192 /* ContainsRestOrSpread */ | 16384 /* ContainsObjectRestOrSpread */)) + && !(ts.getTargetOfBindingOrAssignmentElement(element).transformFlags & (8192 /* ContainsRestOrSpread */ | 16384 /* ContainsObjectRestOrSpread */)) + && !ts.isComputedPropertyName(propertyName)) { + bindingElements = ts.append(bindingElements, ts.visitNode(element, flattenContext.visitor)); + } + else { + if (bindingElements) { + flattenContext.emitBindingOrAssignment(flattenContext.createObjectBindingOrAssignmentPattern(bindingElements), value, location, pattern); + bindingElements = undefined; + } + var rhsValue = createDestructuringPropertyAccess(flattenContext, value, propertyName); + if (ts.isComputedPropertyName(propertyName)) { + computedTempVariables = ts.append(computedTempVariables, rhsValue.argumentExpression); + } + flattenBindingOrAssignmentElement(flattenContext, element, rhsValue, /*location*/ element); + } + } + else if (i === numElements - 1) { + if (bindingElements) { + flattenContext.emitBindingOrAssignment(flattenContext.createObjectBindingOrAssignmentPattern(bindingElements), value, location, pattern); + bindingElements = undefined; + } + var rhsValue = createRestCall(flattenContext.context, value, elements, computedTempVariables, pattern); // TODO: GH#18217 + flattenBindingOrAssignmentElement(flattenContext, element, rhsValue, element); + } + } + if (bindingElements) { + flattenContext.emitBindingOrAssignment(flattenContext.createObjectBindingOrAssignmentPattern(bindingElements), value, location, pattern); + } + } + /** + * Flattens an ArrayBindingOrAssignmentPattern into zero or more bindings or assignments. + * + * @param flattenContext Options used to control flattening. + * @param parent The parent element of the pattern. + * @param pattern The ArrayBindingOrAssignmentPattern to flatten. + * @param value The current RHS value to assign to the element. + * @param location The location to use for source maps and comments. + */ + function flattenArrayBindingOrAssignmentPattern(flattenContext, parent, pattern, value, location) { + var elements = ts.getElementsOfBindingOrAssignmentPattern(pattern); + var numElements = elements.length; + if (flattenContext.level < 1 /* ObjectRest */ && flattenContext.downlevelIteration) { + // Read the elements of the iterable into an array + value = ensureIdentifier(flattenContext, ts.createReadHelper(flattenContext.context, value, numElements > 0 && ts.getRestIndicatorOfBindingOrAssignmentElement(elements[numElements - 1]) + ? undefined + : numElements, location), + /*reuseIdentifierExpressions*/ false, location); + } + else if (numElements !== 1 && (flattenContext.level < 1 /* ObjectRest */ || numElements === 0) + || ts.every(elements, ts.isOmittedExpression)) { + // For anything other than a single-element destructuring we need to generate a temporary + // to ensure value is evaluated exactly once. Additionally, if we have zero elements + // we need to emit *something* to ensure that in case a 'var' keyword was already emitted, + // so in that case, we'll intentionally create that temporary. + // Or all the elements of the binding pattern are omitted expression such as "var [,] = [1,2]", + // then we will create temporary variable. + var reuseIdentifierExpressions = !ts.isDeclarationBindingElement(parent) || numElements !== 0; + value = ensureIdentifier(flattenContext, value, reuseIdentifierExpressions, location); + } + var bindingElements; + var restContainingElements; + for (var i = 0; i < numElements; i++) { + var element = elements[i]; + if (flattenContext.level >= 1 /* ObjectRest */) { + // If an array pattern contains an ObjectRest, we must cache the result so that we + // can perform the ObjectRest destructuring in a different declaration + if (element.transformFlags & 16384 /* ContainsObjectRestOrSpread */) { + var temp = ts.createTempVariable(/*recordTempVariable*/ undefined); + if (flattenContext.hoistTempVariables) { + flattenContext.context.hoistVariableDeclaration(temp); + } + restContainingElements = ts.append(restContainingElements, [temp, element]); + bindingElements = ts.append(bindingElements, flattenContext.createArrayBindingOrAssignmentElement(temp)); + } + else { + bindingElements = ts.append(bindingElements, element); + } + } + else if (ts.isOmittedExpression(element)) { + continue; + } + else if (!ts.getRestIndicatorOfBindingOrAssignmentElement(element)) { + var rhsValue = ts.createElementAccess(value, i); + flattenBindingOrAssignmentElement(flattenContext, element, rhsValue, /*location*/ element); + } + else if (i === numElements - 1) { + var rhsValue = ts.createArraySlice(value, i); + flattenBindingOrAssignmentElement(flattenContext, element, rhsValue, /*location*/ element); + } + } + if (bindingElements) { + flattenContext.emitBindingOrAssignment(flattenContext.createArrayBindingOrAssignmentPattern(bindingElements), value, location, pattern); + } + if (restContainingElements) { + for (var _i = 0, restContainingElements_1 = restContainingElements; _i < restContainingElements_1.length; _i++) { + var _a = restContainingElements_1[_i], id = _a[0], element = _a[1]; + flattenBindingOrAssignmentElement(flattenContext, element, id, element); + } + } + } + /** + * Creates an expression used to provide a default value if a value is `undefined` at runtime. + * + * @param flattenContext Options used to control flattening. + * @param value The RHS value to test. + * @param defaultValue The default value to use if `value` is `undefined` at runtime. + * @param location The location to use for source maps and comments. + */ + function createDefaultValueCheck(flattenContext, value, defaultValue, location) { + value = ensureIdentifier(flattenContext, value, /*reuseIdentifierExpressions*/ true, location); + return ts.createConditional(ts.createTypeCheck(value, "undefined"), defaultValue, value); + } + /** + * Creates either a PropertyAccessExpression or an ElementAccessExpression for the + * right-hand side of a transformed destructuring assignment. + * + * @link https://tc39.github.io/ecma262/#sec-runtime-semantics-keyeddestructuringassignmentevaluation + * + * @param flattenContext Options used to control flattening. + * @param value The RHS value that is the source of the property. + * @param propertyName The destructuring property name. + */ + function createDestructuringPropertyAccess(flattenContext, value, propertyName) { + if (ts.isComputedPropertyName(propertyName)) { + var argumentExpression = ensureIdentifier(flattenContext, ts.visitNode(propertyName.expression, flattenContext.visitor), /*reuseIdentifierExpressions*/ false, /*location*/ propertyName); + return ts.createElementAccess(value, argumentExpression); + } + else if (ts.isStringOrNumericLiteralLike(propertyName)) { + var argumentExpression = ts.getSynthesizedClone(propertyName); + argumentExpression.text = argumentExpression.text; + return ts.createElementAccess(value, argumentExpression); + } + else { + var name = ts.createIdentifier(ts.idText(propertyName)); + return ts.createPropertyAccess(value, name); + } + } + /** + * Ensures that there exists a declared identifier whose value holds the given expression. + * This function is useful to ensure that the expression's value can be read from in subsequent expressions. + * Unless 'reuseIdentifierExpressions' is false, 'value' will be returned if it is just an identifier. + * + * @param flattenContext Options used to control flattening. + * @param value the expression whose value needs to be bound. + * @param reuseIdentifierExpressions true if identifier expressions can simply be returned; + * false if it is necessary to always emit an identifier. + * @param location The location to use for source maps and comments. + */ + function ensureIdentifier(flattenContext, value, reuseIdentifierExpressions, location) { + if (ts.isIdentifier(value) && reuseIdentifierExpressions) { + return value; + } + else { + var temp = ts.createTempVariable(/*recordTempVariable*/ undefined); + if (flattenContext.hoistTempVariables) { + flattenContext.context.hoistVariableDeclaration(temp); + flattenContext.emitExpression(ts.setTextRange(ts.createAssignment(temp, value), location)); + } + else { + flattenContext.emitBindingOrAssignment(temp, value, location, /*original*/ undefined); + } + return temp; + } + } + function makeArrayBindingPattern(elements) { + ts.Debug.assertEachNode(elements, ts.isArrayBindingElement); + return ts.createArrayBindingPattern(elements); + } + function makeArrayAssignmentPattern(elements) { + return ts.createArrayLiteral(ts.map(elements, ts.convertToArrayAssignmentElement)); + } + function makeObjectBindingPattern(elements) { + ts.Debug.assertEachNode(elements, ts.isBindingElement); + return ts.createObjectBindingPattern(elements); + } + function makeObjectAssignmentPattern(elements) { + return ts.createObjectLiteral(ts.map(elements, ts.convertToObjectAssignmentElement)); + } + function makeBindingElement(name) { + return ts.createBindingElement(/*dotDotDotToken*/ undefined, /*propertyName*/ undefined, name); + } + function makeAssignmentElement(name) { + return name; + } + ts.restHelper = { + name: "typescript:rest", + importName: "__rest", + scoped: false, + text: "\n var __rest = (this && this.__rest) || function (s, e) {\n var t = {};\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)\n t[p] = s[p];\n if (s != null && typeof Object.getOwnPropertySymbols === \"function\")\n for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {\n if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))\n t[p[i]] = s[p[i]];\n }\n return t;\n };" + }; + /** Given value: o, propName: p, pattern: { a, b, ...p } from the original statement + * `{ a, b, ...p } = o`, create `p = __rest(o, ["a", "b"]);` + */ + function createRestCall(context, value, elements, computedTempVariables, location) { + context.requestEmitHelper(ts.restHelper); + var propertyNames = []; + var computedTempVariableOffset = 0; + for (var i = 0; i < elements.length - 1; i++) { + var propertyName = ts.getPropertyNameOfBindingOrAssignmentElement(elements[i]); + if (propertyName) { + if (ts.isComputedPropertyName(propertyName)) { + var temp = computedTempVariables[computedTempVariableOffset]; + computedTempVariableOffset++; + // typeof _tmp === "symbol" ? _tmp : _tmp + "" + propertyNames.push(ts.createConditional(ts.createTypeCheck(temp, "symbol"), temp, ts.createAdd(temp, ts.createLiteral("")))); + } + else { + propertyNames.push(ts.createLiteral(propertyName)); + } + } + } + return ts.createCall(ts.getUnscopedHelperName("__rest"), + /*typeArguments*/ undefined, [ + value, + ts.setTextRange(ts.createArrayLiteral(propertyNames), location) + ]); + } +})(ts || (ts = {})); +/*@internal*/ +var ts; +(function (ts) { + var ProcessLevel; + (function (ProcessLevel) { + ProcessLevel[ProcessLevel["LiftRestriction"] = 0] = "LiftRestriction"; + ProcessLevel[ProcessLevel["All"] = 1] = "All"; + })(ProcessLevel = ts.ProcessLevel || (ts.ProcessLevel = {})); + function processTaggedTemplateExpression(context, node, visitor, currentSourceFile, recordTaggedTemplateString, level) { + // Visit the tag expression + var tag = ts.visitNode(node.tag, visitor, ts.isExpression); + // Build up the template arguments and the raw and cooked strings for the template. + // We start out with 'undefined' for the first argument and revisit later + // to avoid walking over the template string twice and shifting all our arguments over after the fact. + var templateArguments = [undefined]; + var cookedStrings = []; + var rawStrings = []; + var template = node.template; + if (level === ProcessLevel.LiftRestriction && !ts.hasInvalidEscape(template)) + return node; + if (ts.isNoSubstitutionTemplateLiteral(template)) { + cookedStrings.push(createTemplateCooked(template)); + rawStrings.push(getRawLiteral(template, currentSourceFile)); + } + else { + cookedStrings.push(createTemplateCooked(template.head)); + rawStrings.push(getRawLiteral(template.head, currentSourceFile)); + for (var _i = 0, _a = template.templateSpans; _i < _a.length; _i++) { + var templateSpan = _a[_i]; + cookedStrings.push(createTemplateCooked(templateSpan.literal)); + rawStrings.push(getRawLiteral(templateSpan.literal, currentSourceFile)); + templateArguments.push(ts.visitNode(templateSpan.expression, visitor, ts.isExpression)); + } + } + var helperCall = createTemplateObjectHelper(context, ts.createArrayLiteral(cookedStrings), ts.createArrayLiteral(rawStrings)); + // Create a variable to cache the template object if we're in a module. + // Do not do this in the global scope, as any variable we currently generate could conflict with + // variables from outside of the current compilation. In the future, we can revisit this behavior. + if (ts.isExternalModule(currentSourceFile)) { + var tempVar = ts.createUniqueName("templateObject"); + recordTaggedTemplateString(tempVar); + templateArguments[0] = ts.createLogicalOr(tempVar, ts.createAssignment(tempVar, helperCall)); + } + else { + templateArguments[0] = helperCall; + } + return ts.createCall(tag, /*typeArguments*/ undefined, templateArguments); + } + ts.processTaggedTemplateExpression = processTaggedTemplateExpression; + function createTemplateCooked(template) { + return template.templateFlags ? ts.createIdentifier("undefined") : ts.createLiteral(template.text); + } + /** + * Creates an ES5 compatible literal from an ES6 template literal. + * + * @param node The ES6 template literal. + */ + function getRawLiteral(node, currentSourceFile) { + // Find original source text, since we need to emit the raw strings of the tagged template. + // The raw strings contain the (escaped) strings of what the user wrote. + // Examples: `\n` is converted to "\\n", a template string with a newline to "\n". + var text = node.rawText; + if (text === undefined) { + text = ts.getSourceTextOfNodeFromSourceFile(currentSourceFile, node); + // text contains the original source, it will also contain quotes ("`"), dolar signs and braces ("${" and "}"), + // thus we need to remove those characters. + // First template piece starts with "`", others with "}" + // Last template piece ends with "`", others with "${" + var isLast = node.kind === 14 /* NoSubstitutionTemplateLiteral */ || node.kind === 17 /* TemplateTail */; + text = text.substring(1, text.length - (isLast ? 1 : 2)); + } + // Newline normalization: + // ES6 Spec 11.8.6.1 - Static Semantics of TV's and TRV's + // and LineTerminatorSequences are normalized to for both TV and TRV. + text = text.replace(/\r\n?/g, "\n"); + return ts.setTextRange(ts.createLiteral(text), node); + } + function createTemplateObjectHelper(context, cooked, raw) { + context.requestEmitHelper(ts.templateObjectHelper); + return ts.createCall(ts.getUnscopedHelperName("__makeTemplateObject"), + /*typeArguments*/ undefined, [ + cooked, + raw + ]); + } + ts.templateObjectHelper = { + name: "typescript:makeTemplateObject", + importName: "__makeTemplateObject", + scoped: false, + priority: 0, + text: "\n var __makeTemplateObject = (this && this.__makeTemplateObject) || function (cooked, raw) {\n if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\n return cooked;\n };" + }; +})(ts || (ts = {})); +/*@internal*/ +var ts; +(function (ts) { + /** + * Indicates whether to emit type metadata in the new format. + */ + var USE_NEW_TYPE_METADATA_FORMAT = false; + var TypeScriptSubstitutionFlags; + (function (TypeScriptSubstitutionFlags) { + /** Enables substitutions for decorated classes. */ + TypeScriptSubstitutionFlags[TypeScriptSubstitutionFlags["ClassAliases"] = 1] = "ClassAliases"; + /** Enables substitutions for namespace exports. */ + TypeScriptSubstitutionFlags[TypeScriptSubstitutionFlags["NamespaceExports"] = 2] = "NamespaceExports"; + /* Enables substitutions for unqualified enum members */ + TypeScriptSubstitutionFlags[TypeScriptSubstitutionFlags["NonQualifiedEnumMembers"] = 8] = "NonQualifiedEnumMembers"; + })(TypeScriptSubstitutionFlags || (TypeScriptSubstitutionFlags = {})); + var ClassFacts; + (function (ClassFacts) { + ClassFacts[ClassFacts["None"] = 0] = "None"; + ClassFacts[ClassFacts["HasStaticInitializedProperties"] = 1] = "HasStaticInitializedProperties"; + ClassFacts[ClassFacts["HasConstructorDecorators"] = 2] = "HasConstructorDecorators"; + ClassFacts[ClassFacts["HasMemberDecorators"] = 4] = "HasMemberDecorators"; + ClassFacts[ClassFacts["IsExportOfNamespace"] = 8] = "IsExportOfNamespace"; + ClassFacts[ClassFacts["IsNamedExternalExport"] = 16] = "IsNamedExternalExport"; + ClassFacts[ClassFacts["IsDefaultExternalExport"] = 32] = "IsDefaultExternalExport"; + ClassFacts[ClassFacts["IsDerivedClass"] = 64] = "IsDerivedClass"; + ClassFacts[ClassFacts["UseImmediatelyInvokedFunctionExpression"] = 128] = "UseImmediatelyInvokedFunctionExpression"; + ClassFacts[ClassFacts["HasAnyDecorators"] = 6] = "HasAnyDecorators"; + ClassFacts[ClassFacts["NeedsName"] = 5] = "NeedsName"; + ClassFacts[ClassFacts["MayNeedImmediatelyInvokedFunctionExpression"] = 7] = "MayNeedImmediatelyInvokedFunctionExpression"; + ClassFacts[ClassFacts["IsExported"] = 56] = "IsExported"; + })(ClassFacts || (ClassFacts = {})); + function transformTypeScript(context) { + var startLexicalEnvironment = context.startLexicalEnvironment, resumeLexicalEnvironment = context.resumeLexicalEnvironment, endLexicalEnvironment = context.endLexicalEnvironment, hoistVariableDeclaration = context.hoistVariableDeclaration; + var resolver = context.getEmitResolver(); + var compilerOptions = context.getCompilerOptions(); + var strictNullChecks = ts.getStrictOptionValue(compilerOptions, "strictNullChecks"); + var languageVersion = ts.getEmitScriptTarget(compilerOptions); + var moduleKind = ts.getEmitModuleKind(compilerOptions); + // Save the previous transformation hooks. + var previousOnEmitNode = context.onEmitNode; + var previousOnSubstituteNode = context.onSubstituteNode; + // Set new transformation hooks. + context.onEmitNode = onEmitNode; + context.onSubstituteNode = onSubstituteNode; + // Enable substitution for property/element access to emit const enum values. + context.enableSubstitution(194 /* PropertyAccessExpression */); + context.enableSubstitution(195 /* ElementAccessExpression */); + // These variables contain state that changes as we descend into the tree. + var currentSourceFile; + var currentNamespace; + var currentNamespaceContainerName; + var currentLexicalScope; + var currentNameScope; + var currentScopeFirstDeclarationsOfName; + var currentClassHasParameterProperties; + /** + * Keeps track of whether expression substitution has been enabled for specific edge cases. + * They are persisted between each SourceFile transformation and should not be reset. + */ + var enabledSubstitutions; + /** + * A map that keeps track of aliases created for classes with decorators to avoid issues + * with the double-binding behavior of classes. + */ + var classAliases; + /** + * Keeps track of whether we are within any containing namespaces when performing + * just-in-time substitution while printing an expression identifier. + */ + var applicableSubstitutions; + return transformSourceFileOrBundle; + function transformSourceFileOrBundle(node) { + if (node.kind === 291 /* Bundle */) { + return transformBundle(node); + } + return transformSourceFile(node); + } + function transformBundle(node) { + return ts.createBundle(node.sourceFiles.map(transformSourceFile), ts.mapDefined(node.prepends, function (prepend) { + if (prepend.kind === 293 /* InputFiles */) { + return ts.createUnparsedSourceFile(prepend, "js"); + } + return prepend; + })); + } + /** + * Transform TypeScript-specific syntax in a SourceFile. + * + * @param node A SourceFile node. + */ + function transformSourceFile(node) { + if (node.isDeclarationFile) { + return node; + } + currentSourceFile = node; + var visited = saveStateAndInvoke(node, visitSourceFile); + ts.addEmitHelpers(visited, context.readEmitHelpers()); + currentSourceFile = undefined; + return visited; + } + /** + * Visits a node, saving and restoring state variables on the stack. + * + * @param node The node to visit. + */ + function saveStateAndInvoke(node, f) { + // Save state + var savedCurrentScope = currentLexicalScope; + var savedCurrentNameScope = currentNameScope; + var savedCurrentScopeFirstDeclarationsOfName = currentScopeFirstDeclarationsOfName; + var savedCurrentClassHasParameterProperties = currentClassHasParameterProperties; + // Handle state changes before visiting a node. + onBeforeVisitNode(node); + var visited = f(node); + // Restore state + if (currentLexicalScope !== savedCurrentScope) { + currentScopeFirstDeclarationsOfName = savedCurrentScopeFirstDeclarationsOfName; + } + currentLexicalScope = savedCurrentScope; + currentNameScope = savedCurrentNameScope; + currentClassHasParameterProperties = savedCurrentClassHasParameterProperties; + return visited; + } + /** + * Performs actions that should always occur immediately before visiting a node. + * + * @param node The node to visit. + */ + function onBeforeVisitNode(node) { + switch (node.kind) { + case 290 /* SourceFile */: + case 251 /* CaseBlock */: + case 250 /* ModuleBlock */: + case 223 /* Block */: + currentLexicalScope = node; + currentNameScope = undefined; + currentScopeFirstDeclarationsOfName = undefined; + break; + case 245 /* ClassDeclaration */: + case 244 /* FunctionDeclaration */: + if (ts.hasModifier(node, 2 /* Ambient */)) { + break; + } + // Record these declarations provided that they have a name. + if (node.name) { + recordEmittedDeclarationInScope(node); + } + else { + // These nodes should always have names unless they are default-exports; + // however, class declaration parsing allows for undefined names, so syntactically invalid + // programs may also have an undefined name. + ts.Debug.assert(node.kind === 245 /* ClassDeclaration */ || ts.hasModifier(node, 512 /* Default */)); + } + if (ts.isClassDeclaration(node)) { + // XXX: should probably also cover interfaces and type aliases that can have type variables? + currentNameScope = node; + } + break; + } + } + /** + * General-purpose node visitor. + * + * @param node The node to visit. + */ + function visitor(node) { + return saveStateAndInvoke(node, visitorWorker); + } + /** + * Visits and possibly transforms any node. + * + * @param node The node to visit. + */ + function visitorWorker(node) { + if (node.transformFlags & 1 /* ContainsTypeScript */) { + return visitTypeScript(node); + } + return node; + } + /** + * Specialized visitor that visits the immediate children of a SourceFile. + * + * @param node The node to visit. + */ + function sourceElementVisitor(node) { + return saveStateAndInvoke(node, sourceElementVisitorWorker); + } + /** + * Specialized visitor that visits the immediate children of a SourceFile. + * + * @param node The node to visit. + */ + function sourceElementVisitorWorker(node) { + switch (node.kind) { + case 254 /* ImportDeclaration */: + case 253 /* ImportEqualsDeclaration */: + case 259 /* ExportAssignment */: + case 260 /* ExportDeclaration */: + return visitEllidableStatement(node); + default: + return visitorWorker(node); + } + } + function visitEllidableStatement(node) { + var parsed = ts.getParseTreeNode(node); + if (parsed !== node) { + // If the node has been transformed by a `before` transformer, perform no ellision on it + // As the type information we would attempt to lookup to perform ellision is potentially unavailable for the synthesized nodes + // We do not reuse `visitorWorker`, as the ellidable statement syntax kinds are technically unrecognized by the switch-case in `visitTypeScript`, + // and will trigger debug failures when debug verbosity is turned up + if (node.transformFlags & 1 /* ContainsTypeScript */) { + // This node contains TypeScript, so we should visit its children. + return ts.visitEachChild(node, visitor, context); + } + // Otherwise, we can just return the node + return node; + } + switch (node.kind) { + case 254 /* ImportDeclaration */: + return visitImportDeclaration(node); + case 253 /* ImportEqualsDeclaration */: + return visitImportEqualsDeclaration(node); + case 259 /* ExportAssignment */: + return visitExportAssignment(node); + case 260 /* ExportDeclaration */: + return visitExportDeclaration(node); + default: + ts.Debug.fail("Unhandled ellided statement"); + } + } + /** + * Specialized visitor that visits the immediate children of a namespace. + * + * @param node The node to visit. + */ + function namespaceElementVisitor(node) { + return saveStateAndInvoke(node, namespaceElementVisitorWorker); + } + /** + * Specialized visitor that visits the immediate children of a namespace. + * + * @param node The node to visit. + */ + function namespaceElementVisitorWorker(node) { + if (node.kind === 260 /* ExportDeclaration */ || + node.kind === 254 /* ImportDeclaration */ || + node.kind === 255 /* ImportClause */ || + (node.kind === 253 /* ImportEqualsDeclaration */ && + node.moduleReference.kind === 265 /* ExternalModuleReference */)) { + // do not emit ES6 imports and exports since they are illegal inside a namespace + return undefined; + } + else if (node.transformFlags & 1 /* ContainsTypeScript */ || ts.hasModifier(node, 1 /* Export */)) { + return visitTypeScript(node); + } + return node; + } + /** + * Specialized visitor that visits the immediate children of a class with TypeScript syntax. + * + * @param node The node to visit. + */ + function classElementVisitor(node) { + return saveStateAndInvoke(node, classElementVisitorWorker); + } + /** + * Specialized visitor that visits the immediate children of a class with TypeScript syntax. + * + * @param node The node to visit. + */ + function classElementVisitorWorker(node) { + switch (node.kind) { + case 162 /* Constructor */: + return visitConstructor(node); + case 159 /* PropertyDeclaration */: + // Property declarations are not TypeScript syntax, but they must be visited + // for the decorator transformation. + return visitPropertyDeclaration(node); + case 167 /* IndexSignature */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + case 161 /* MethodDeclaration */: + // Fallback to the default visit behavior. + return visitorWorker(node); + case 222 /* SemicolonClassElement */: + return node; + default: + return ts.Debug.failBadSyntaxKind(node); + } + } + function modifierVisitor(node) { + if (ts.modifierToFlag(node.kind) & 2270 /* TypeScriptModifier */) { + return undefined; + } + else if (currentNamespace && node.kind === 89 /* ExportKeyword */) { + return undefined; + } + return node; + } + /** + * Branching visitor, visits a TypeScript syntax node. + * + * @param node The node to visit. + */ + function visitTypeScript(node) { + if (ts.isStatement(node) && ts.hasModifier(node, 2 /* Ambient */)) { + // TypeScript ambient declarations are elided, but some comments may be preserved. + // See the implementation of `getLeadingComments` in comments.ts for more details. + return ts.createNotEmittedStatement(node); + } + switch (node.kind) { + case 89 /* ExportKeyword */: + case 84 /* DefaultKeyword */: + // ES6 export and default modifiers are elided when inside a namespace. + return currentNamespace ? undefined : node; + case 119 /* PublicKeyword */: + case 117 /* PrivateKeyword */: + case 118 /* ProtectedKeyword */: + case 122 /* AbstractKeyword */: + case 81 /* ConstKeyword */: + case 130 /* DeclareKeyword */: + case 138 /* ReadonlyKeyword */: + // TypeScript accessibility and readonly modifiers are elided + // falls through + case 174 /* ArrayType */: + case 175 /* TupleType */: + case 176 /* OptionalType */: + case 177 /* RestType */: + case 173 /* TypeLiteral */: + case 168 /* TypePredicate */: + case 155 /* TypeParameter */: + case 125 /* AnyKeyword */: + case 148 /* UnknownKeyword */: + case 128 /* BooleanKeyword */: + case 143 /* StringKeyword */: + case 140 /* NumberKeyword */: + case 137 /* NeverKeyword */: + case 110 /* VoidKeyword */: + case 144 /* SymbolKeyword */: + case 171 /* ConstructorType */: + case 170 /* FunctionType */: + case 172 /* TypeQuery */: + case 169 /* TypeReference */: + case 178 /* UnionType */: + case 179 /* IntersectionType */: + case 180 /* ConditionalType */: + case 182 /* ParenthesizedType */: + case 183 /* ThisType */: + case 184 /* TypeOperator */: + case 185 /* IndexedAccessType */: + case 186 /* MappedType */: + case 187 /* LiteralType */: + // TypeScript type nodes are elided. + // falls through + case 167 /* IndexSignature */: + // TypeScript index signatures are elided. + // falls through + case 157 /* Decorator */: + // TypeScript decorators are elided. They will be emitted as part of visitClassDeclaration. + // falls through + case 247 /* TypeAliasDeclaration */: + // TypeScript type-only declarations are elided. + return undefined; + case 159 /* PropertyDeclaration */: + // TypeScript property declarations are elided. However their names are still visited, and can potentially be retained if they could have sideeffects + return visitPropertyDeclaration(node); + case 252 /* NamespaceExportDeclaration */: + // TypeScript namespace export declarations are elided. + return undefined; + case 162 /* Constructor */: + return visitConstructor(node); + case 246 /* InterfaceDeclaration */: + // TypeScript interfaces are elided, but some comments may be preserved. + // See the implementation of `getLeadingComments` in comments.ts for more details. + return ts.createNotEmittedStatement(node); + case 245 /* ClassDeclaration */: + // This may be a class declaration with TypeScript syntax extensions. + // + // TypeScript class syntax extensions include: + // - decorators + // - optional `implements` heritage clause + // - parameter property assignments in the constructor + // - index signatures + // - method overload signatures + return visitClassDeclaration(node); + case 214 /* ClassExpression */: + // This may be a class expression with TypeScript syntax extensions. + // + // TypeScript class syntax extensions include: + // - decorators + // - optional `implements` heritage clause + // - parameter property assignments in the constructor + // - index signatures + // - method overload signatures + return visitClassExpression(node); + case 279 /* HeritageClause */: + // This may be a heritage clause with TypeScript syntax extensions. + // + // TypeScript heritage clause extensions include: + // - `implements` clause + return visitHeritageClause(node); + case 216 /* ExpressionWithTypeArguments */: + // TypeScript supports type arguments on an expression in an `extends` heritage clause. + return visitExpressionWithTypeArguments(node); + case 161 /* MethodDeclaration */: + // TypeScript method declarations may have decorators, modifiers + // or type annotations. + return visitMethodDeclaration(node); + case 163 /* GetAccessor */: + // Get Accessors can have TypeScript modifiers, decorators, and type annotations. + return visitGetAccessor(node); + case 164 /* SetAccessor */: + // Set Accessors can have TypeScript modifiers and type annotations. + return visitSetAccessor(node); + case 244 /* FunctionDeclaration */: + // Typescript function declarations can have modifiers, decorators, and type annotations. + return visitFunctionDeclaration(node); + case 201 /* FunctionExpression */: + // TypeScript function expressions can have modifiers and type annotations. + return visitFunctionExpression(node); + case 202 /* ArrowFunction */: + // TypeScript arrow functions can have modifiers and type annotations. + return visitArrowFunction(node); + case 156 /* Parameter */: + // This may be a parameter declaration with TypeScript syntax extensions. + // + // TypeScript parameter declaration syntax extensions include: + // - decorators + // - accessibility modifiers + // - the question mark (?) token for optional parameters + // - type annotations + // - this parameters + return visitParameter(node); + case 200 /* ParenthesizedExpression */: + // ParenthesizedExpressions are TypeScript if their expression is a + // TypeAssertion or AsExpression + return visitParenthesizedExpression(node); + case 199 /* TypeAssertionExpression */: + case 217 /* AsExpression */: + // TypeScript type assertions are removed, but their subtrees are preserved. + return visitAssertionExpression(node); + case 196 /* CallExpression */: + return visitCallExpression(node); + case 197 /* NewExpression */: + return visitNewExpression(node); + case 198 /* TaggedTemplateExpression */: + return visitTaggedTemplateExpression(node); + case 218 /* NonNullExpression */: + // TypeScript non-null expressions are removed, but their subtrees are preserved. + return visitNonNullExpression(node); + case 248 /* EnumDeclaration */: + // TypeScript enum declarations do not exist in ES6 and must be rewritten. + return visitEnumDeclaration(node); + case 225 /* VariableStatement */: + // TypeScript namespace exports for variable statements must be transformed. + return visitVariableStatement(node); + case 242 /* VariableDeclaration */: + return visitVariableDeclaration(node); + case 249 /* ModuleDeclaration */: + // TypeScript namespace declarations must be transformed. + return visitModuleDeclaration(node); + case 253 /* ImportEqualsDeclaration */: + // TypeScript namespace or external module import. + return visitImportEqualsDeclaration(node); + case 267 /* JsxSelfClosingElement */: + return visitJsxSelfClosingElement(node); + case 268 /* JsxOpeningElement */: + return visitJsxJsxOpeningElement(node); + default: + // node contains some other TypeScript syntax + return ts.visitEachChild(node, visitor, context); + } + } + function visitSourceFile(node) { + var alwaysStrict = ts.getStrictOptionValue(compilerOptions, "alwaysStrict") && + !(ts.isExternalModule(node) && moduleKind >= ts.ModuleKind.ES2015) && + !ts.isJsonSourceFile(node); + return ts.updateSourceFileNode(node, ts.visitLexicalEnvironment(node.statements, sourceElementVisitor, context, /*start*/ 0, alwaysStrict)); + } + /** + * Tests whether we should emit a __decorate call for a class declaration. + */ + function shouldEmitDecorateCallForClass(node) { + if (node.decorators && node.decorators.length > 0) { + return true; + } + var constructor = ts.getFirstConstructorWithBody(node); + if (constructor) { + return ts.forEach(constructor.parameters, shouldEmitDecorateCallForParameter); + } + return false; + } + /** + * Tests whether we should emit a __decorate call for a parameter declaration. + */ + function shouldEmitDecorateCallForParameter(parameter) { + return parameter.decorators !== undefined && parameter.decorators.length > 0; + } + function getClassFacts(node, staticProperties) { + var facts = 0 /* None */; + if (ts.some(staticProperties)) + facts |= 1 /* HasStaticInitializedProperties */; + var extendsClauseElement = ts.getEffectiveBaseTypeNode(node); + if (extendsClauseElement && ts.skipOuterExpressions(extendsClauseElement.expression).kind !== 100 /* NullKeyword */) + facts |= 64 /* IsDerivedClass */; + if (shouldEmitDecorateCallForClass(node)) + facts |= 2 /* HasConstructorDecorators */; + if (ts.childIsDecorated(node)) + facts |= 4 /* HasMemberDecorators */; + if (isExportOfNamespace(node)) + facts |= 8 /* IsExportOfNamespace */; + else if (isDefaultExternalModuleExport(node)) + facts |= 32 /* IsDefaultExternalExport */; + else if (isNamedExternalModuleExport(node)) + facts |= 16 /* IsNamedExternalExport */; + if (languageVersion <= 1 /* ES5 */ && (facts & 7 /* MayNeedImmediatelyInvokedFunctionExpression */)) + facts |= 128 /* UseImmediatelyInvokedFunctionExpression */; + return facts; + } + function hasTypeScriptClassSyntax(node) { + return !!(node.transformFlags & 2048 /* ContainsTypeScriptClassSyntax */); + } + function isClassLikeDeclarationWithTypeScriptSyntax(node) { + return ts.some(node.decorators) + || ts.some(node.typeParameters) + || ts.some(node.heritageClauses, hasTypeScriptClassSyntax) + || ts.some(node.members, hasTypeScriptClassSyntax); + } + function visitClassDeclaration(node) { + if (!isClassLikeDeclarationWithTypeScriptSyntax(node) && !(currentNamespace && ts.hasModifier(node, 1 /* Export */))) { + return ts.visitEachChild(node, visitor, context); + } + var staticProperties = ts.getProperties(node, /*requireInitializer*/ true, /*isStatic*/ true); + var facts = getClassFacts(node, staticProperties); + if (facts & 128 /* UseImmediatelyInvokedFunctionExpression */) { + context.startLexicalEnvironment(); + } + var name = node.name || (facts & 5 /* NeedsName */ ? ts.getGeneratedNameForNode(node) : undefined); + var classStatement = facts & 2 /* HasConstructorDecorators */ + ? createClassDeclarationHeadWithDecorators(node, name) + : createClassDeclarationHeadWithoutDecorators(node, name, facts); + var statements = [classStatement]; + // Write any decorators of the node. + addClassElementDecorationStatements(statements, node, /*isStatic*/ false); + addClassElementDecorationStatements(statements, node, /*isStatic*/ true); + addConstructorDecorationStatement(statements, node); + if (facts & 128 /* UseImmediatelyInvokedFunctionExpression */) { + // When we emit a TypeScript class down to ES5, we must wrap it in an IIFE so that the + // 'es2015' transformer can properly nest static initializers and decorators. The result + // looks something like: + // + // var C = function () { + // class C { + // } + // C.static_prop = 1; + // return C; + // }(); + // + var closingBraceLocation = ts.createTokenRange(ts.skipTrivia(currentSourceFile.text, node.members.end), 19 /* CloseBraceToken */); + var localName = ts.getInternalName(node); + // The following partially-emitted expression exists purely to align our sourcemap + // emit with the original emitter. + var outer = ts.createPartiallyEmittedExpression(localName); + outer.end = closingBraceLocation.end; + ts.setEmitFlags(outer, 1536 /* NoComments */); + var statement = ts.createReturn(outer); + statement.pos = closingBraceLocation.pos; + ts.setEmitFlags(statement, 1536 /* NoComments */ | 384 /* NoTokenSourceMaps */); + statements.push(statement); + ts.insertStatementsAfterStandardPrologue(statements, context.endLexicalEnvironment()); + var iife = ts.createImmediatelyInvokedArrowFunction(statements); + ts.setEmitFlags(iife, 33554432 /* TypeScriptClassWrapper */); + var varStatement = ts.createVariableStatement( + /*modifiers*/ undefined, ts.createVariableDeclarationList([ + ts.createVariableDeclaration(ts.getLocalName(node, /*allowComments*/ false, /*allowSourceMaps*/ false), + /*type*/ undefined, iife) + ])); + ts.setOriginalNode(varStatement, node); + ts.setCommentRange(varStatement, node); + ts.setSourceMapRange(varStatement, ts.moveRangePastDecorators(node)); + ts.startOnNewLine(varStatement); + statements = [varStatement]; + } + // If the class is exported as part of a TypeScript namespace, emit the namespace export. + // Otherwise, if the class was exported at the top level and was decorated, emit an export + // declaration or export default for the class. + if (facts & 8 /* IsExportOfNamespace */) { + addExportMemberAssignment(statements, node); + } + else if (facts & 128 /* UseImmediatelyInvokedFunctionExpression */ || facts & 2 /* HasConstructorDecorators */) { + if (facts & 32 /* IsDefaultExternalExport */) { + statements.push(ts.createExportDefault(ts.getLocalName(node, /*allowComments*/ false, /*allowSourceMaps*/ true))); + } + else if (facts & 16 /* IsNamedExternalExport */) { + statements.push(ts.createExternalModuleExport(ts.getLocalName(node, /*allowComments*/ false, /*allowSourceMaps*/ true))); + } + } + if (statements.length > 1) { + // Add a DeclarationMarker as a marker for the end of the declaration + statements.push(ts.createEndOfDeclarationMarker(node)); + ts.setEmitFlags(classStatement, ts.getEmitFlags(classStatement) | 4194304 /* HasEndOfDeclarationMarker */); + } + return ts.singleOrMany(statements); + } + /** + * Transforms a non-decorated class declaration and appends the resulting statements. + * + * @param node A ClassDeclaration node. + * @param name The name of the class. + * @param facts Precomputed facts about the class. + */ + function createClassDeclarationHeadWithoutDecorators(node, name, facts) { + // ${modifiers} class ${name} ${heritageClauses} { + // ${members} + // } + // we do not emit modifiers on the declaration if we are emitting an IIFE + var modifiers = !(facts & 128 /* UseImmediatelyInvokedFunctionExpression */) + ? ts.visitNodes(node.modifiers, modifierVisitor, ts.isModifier) + : undefined; + var classDeclaration = ts.createClassDeclaration( + /*decorators*/ undefined, modifiers, name, + /*typeParameters*/ undefined, ts.visitNodes(node.heritageClauses, visitor, ts.isHeritageClause), transformClassMembers(node)); + // To better align with the old emitter, we should not emit a trailing source map + // entry if the class has static properties. + var emitFlags = ts.getEmitFlags(node); + if (facts & 1 /* HasStaticInitializedProperties */) { + emitFlags |= 32 /* NoTrailingSourceMap */; + } + ts.aggregateTransformFlags(classDeclaration); + ts.setTextRange(classDeclaration, node); + ts.setOriginalNode(classDeclaration, node); + ts.setEmitFlags(classDeclaration, emitFlags); + return classDeclaration; + } + /** + * Transforms a decorated class declaration and appends the resulting statements. If + * the class requires an alias to avoid issues with double-binding, the alias is returned. + */ + function createClassDeclarationHeadWithDecorators(node, name) { + // When we emit an ES6 class that has a class decorator, we must tailor the + // emit to certain specific cases. + // + // In the simplest case, we emit the class declaration as a let declaration, and + // evaluate decorators after the close of the class body: + // + // [Example 1] + // --------------------------------------------------------------------- + // TypeScript | Javascript + // --------------------------------------------------------------------- + // @dec | let C = class C { + // class C { | } + // } | C = __decorate([dec], C); + // --------------------------------------------------------------------- + // @dec | let C = class C { + // export class C { | } + // } | C = __decorate([dec], C); + // | export { C }; + // --------------------------------------------------------------------- + // + // If a class declaration contains a reference to itself *inside* of the class body, + // this introduces two bindings to the class: One outside of the class body, and one + // inside of the class body. If we apply decorators as in [Example 1] above, there + // is the possibility that the decorator `dec` will return a new value for the + // constructor, which would result in the binding inside of the class no longer + // pointing to the same reference as the binding outside of the class. + // + // As a result, we must instead rewrite all references to the class *inside* of the + // class body to instead point to a local temporary alias for the class: + // + // [Example 2] + // --------------------------------------------------------------------- + // TypeScript | Javascript + // --------------------------------------------------------------------- + // @dec | let C = C_1 = class C { + // class C { | static x() { return C_1.y; } + // static x() { return C.y; } | } + // static y = 1; | C.y = 1; + // } | C = C_1 = __decorate([dec], C); + // | var C_1; + // --------------------------------------------------------------------- + // @dec | let C = class C { + // export class C { | static x() { return C_1.y; } + // static x() { return C.y; } | } + // static y = 1; | C.y = 1; + // } | C = C_1 = __decorate([dec], C); + // | export { C }; + // | var C_1; + // --------------------------------------------------------------------- + // + // If a class declaration is the default export of a module, we instead emit + // the export after the decorated declaration: + // + // [Example 3] + // --------------------------------------------------------------------- + // TypeScript | Javascript + // --------------------------------------------------------------------- + // @dec | let default_1 = class { + // export default class { | } + // } | default_1 = __decorate([dec], default_1); + // | export default default_1; + // --------------------------------------------------------------------- + // @dec | let C = class C { + // export default class C { | } + // } | C = __decorate([dec], C); + // | export default C; + // --------------------------------------------------------------------- + // + // If the class declaration is the default export and a reference to itself + // inside of the class body, we must emit both an alias for the class *and* + // move the export after the declaration: + // + // [Example 4] + // --------------------------------------------------------------------- + // TypeScript | Javascript + // --------------------------------------------------------------------- + // @dec | let C = class C { + // export default class C { | static x() { return C_1.y; } + // static x() { return C.y; } | } + // static y = 1; | C.y = 1; + // } | C = C_1 = __decorate([dec], C); + // | export default C; + // | var C_1; + // --------------------------------------------------------------------- + // + var location = ts.moveRangePastDecorators(node); + var classAlias = getClassAliasIfNeeded(node); + var declName = ts.getLocalName(node, /*allowComments*/ false, /*allowSourceMaps*/ true); + // ... = class ${name} ${heritageClauses} { + // ${members} + // } + var heritageClauses = ts.visitNodes(node.heritageClauses, visitor, ts.isHeritageClause); + var members = transformClassMembers(node); + var classExpression = ts.createClassExpression(/*modifiers*/ undefined, name, /*typeParameters*/ undefined, heritageClauses, members); + ts.aggregateTransformFlags(classExpression); + ts.setOriginalNode(classExpression, node); + ts.setTextRange(classExpression, location); + // let ${name} = ${classExpression} where name is either declaredName if the class doesn't contain self-reference + // or decoratedClassAlias if the class contain self-reference. + var statement = ts.createVariableStatement( + /*modifiers*/ undefined, ts.createVariableDeclarationList([ + ts.createVariableDeclaration(declName, + /*type*/ undefined, classAlias ? ts.createAssignment(classAlias, classExpression) : classExpression) + ], 1 /* Let */)); + ts.setOriginalNode(statement, node); + ts.setTextRange(statement, location); + ts.setCommentRange(statement, node); + return statement; + } + function visitClassExpression(node) { + if (!isClassLikeDeclarationWithTypeScriptSyntax(node)) { + return ts.visitEachChild(node, visitor, context); + } + var classExpression = ts.createClassExpression( + /*modifiers*/ undefined, node.name, + /*typeParameters*/ undefined, ts.visitNodes(node.heritageClauses, visitor, ts.isHeritageClause), transformClassMembers(node)); + ts.aggregateTransformFlags(classExpression); + ts.setOriginalNode(classExpression, node); + ts.setTextRange(classExpression, node); + return classExpression; + } + /** + * Transforms the members of a class. + * + * @param node The current class. + */ + function transformClassMembers(node) { + var members = []; + var constructor = ts.getFirstConstructorWithBody(node); + var parametersWithPropertyAssignments = constructor && + ts.filter(constructor.parameters, function (p) { return ts.isParameterPropertyDeclaration(p, constructor); }); + if (parametersWithPropertyAssignments) { + for (var _i = 0, parametersWithPropertyAssignments_1 = parametersWithPropertyAssignments; _i < parametersWithPropertyAssignments_1.length; _i++) { + var parameter = parametersWithPropertyAssignments_1[_i]; + if (ts.isIdentifier(parameter.name)) { + members.push(ts.setOriginalNode(ts.aggregateTransformFlags(ts.createProperty( + /*decorators*/ undefined, + /*modifiers*/ undefined, parameter.name, + /*questionOrExclamationToken*/ undefined, + /*type*/ undefined, + /*initializer*/ undefined)), parameter)); + } + } + } + ts.addRange(members, ts.visitNodes(node.members, classElementVisitor, ts.isClassElement)); + return ts.setTextRange(ts.createNodeArray(members), /*location*/ node.members); + } + /** + * Gets either the static or instance members of a class that are decorated, or have + * parameters that are decorated. + * + * @param node The class containing the member. + * @param isStatic A value indicating whether to retrieve static or instance members of + * the class. + */ + function getDecoratedClassElements(node, isStatic) { + return ts.filter(node.members, isStatic ? function (m) { return isStaticDecoratedClassElement(m, node); } : function (m) { return isInstanceDecoratedClassElement(m, node); }); + } + /** + * Determines whether a class member is a static member of a class that is decorated, or + * has parameters that are decorated. + * + * @param member The class member. + */ + function isStaticDecoratedClassElement(member, parent) { + return isDecoratedClassElement(member, /*isStatic*/ true, parent); + } + /** + * Determines whether a class member is an instance member of a class that is decorated, + * or has parameters that are decorated. + * + * @param member The class member. + */ + function isInstanceDecoratedClassElement(member, parent) { + return isDecoratedClassElement(member, /*isStatic*/ false, parent); + } + /** + * Determines whether a class member is either a static or an instance member of a class + * that is decorated, or has parameters that are decorated. + * + * @param member The class member. + */ + function isDecoratedClassElement(member, isStatic, parent) { + return ts.nodeOrChildIsDecorated(member, parent) + && isStatic === ts.hasModifier(member, 32 /* Static */); + } + /** + * Gets an array of arrays of decorators for the parameters of a function-like node. + * The offset into the result array should correspond to the offset of the parameter. + * + * @param node The function-like node. + */ + function getDecoratorsOfParameters(node) { + var decorators; + if (node) { + var parameters = node.parameters; + var firstParameterIsThis = parameters.length > 0 && ts.parameterIsThisKeyword(parameters[0]); + var firstParameterOffset = firstParameterIsThis ? 1 : 0; + var numParameters = firstParameterIsThis ? parameters.length - 1 : parameters.length; + for (var i = 0; i < numParameters; i++) { + var parameter = parameters[i + firstParameterOffset]; + if (decorators || parameter.decorators) { + if (!decorators) { + decorators = new Array(numParameters); + } + decorators[i] = parameter.decorators; + } + } + } + return decorators; + } + /** + * Gets an AllDecorators object containing the decorators for the class and the decorators for the + * parameters of the constructor of the class. + * + * @param node The class node. + */ + function getAllDecoratorsOfConstructor(node) { + var decorators = node.decorators; + var parameters = getDecoratorsOfParameters(ts.getFirstConstructorWithBody(node)); + if (!decorators && !parameters) { + return undefined; + } + return { + decorators: decorators, + parameters: parameters + }; + } + /** + * Gets an AllDecorators object containing the decorators for the member and its parameters. + * + * @param node The class node that contains the member. + * @param member The class member. + */ + function getAllDecoratorsOfClassElement(node, member) { + switch (member.kind) { + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + return getAllDecoratorsOfAccessors(node, member); + case 161 /* MethodDeclaration */: + return getAllDecoratorsOfMethod(member); + case 159 /* PropertyDeclaration */: + return getAllDecoratorsOfProperty(member); + default: + return undefined; + } + } + /** + * Gets an AllDecorators object containing the decorators for the accessor and its parameters. + * + * @param node The class node that contains the accessor. + * @param accessor The class accessor member. + */ + function getAllDecoratorsOfAccessors(node, accessor) { + if (!accessor.body) { + return undefined; + } + var _a = ts.getAllAccessorDeclarations(node.members, accessor), firstAccessor = _a.firstAccessor, secondAccessor = _a.secondAccessor, setAccessor = _a.setAccessor; + var firstAccessorWithDecorators = firstAccessor.decorators ? firstAccessor : secondAccessor && secondAccessor.decorators ? secondAccessor : undefined; + if (!firstAccessorWithDecorators || accessor !== firstAccessorWithDecorators) { + return undefined; + } + var decorators = firstAccessorWithDecorators.decorators; + var parameters = getDecoratorsOfParameters(setAccessor); + if (!decorators && !parameters) { + return undefined; + } + return { decorators: decorators, parameters: parameters }; + } + /** + * Gets an AllDecorators object containing the decorators for the method and its parameters. + * + * @param method The class method member. + */ + function getAllDecoratorsOfMethod(method) { + if (!method.body) { + return undefined; + } + var decorators = method.decorators; + var parameters = getDecoratorsOfParameters(method); + if (!decorators && !parameters) { + return undefined; + } + return { decorators: decorators, parameters: parameters }; + } + /** + * Gets an AllDecorators object containing the decorators for the property. + * + * @param property The class property member. + */ + function getAllDecoratorsOfProperty(property) { + var decorators = property.decorators; + if (!decorators) { + return undefined; + } + return { decorators: decorators }; + } + /** + * Transforms all of the decorators for a declaration into an array of expressions. + * + * @param node The declaration node. + * @param allDecorators An object containing all of the decorators for the declaration. + */ + function transformAllDecoratorsOfDeclaration(node, container, allDecorators) { + if (!allDecorators) { + return undefined; + } + var decoratorExpressions = []; + ts.addRange(decoratorExpressions, ts.map(allDecorators.decorators, transformDecorator)); + ts.addRange(decoratorExpressions, ts.flatMap(allDecorators.parameters, transformDecoratorsOfParameter)); + addTypeMetadata(node, container, decoratorExpressions); + return decoratorExpressions; + } + /** + * Generates statements used to apply decorators to either the static or instance members + * of a class. + * + * @param node The class node. + * @param isStatic A value indicating whether to generate statements for static or + * instance members. + */ + function addClassElementDecorationStatements(statements, node, isStatic) { + ts.addRange(statements, ts.map(generateClassElementDecorationExpressions(node, isStatic), expressionToStatement)); + } + /** + * Generates expressions used to apply decorators to either the static or instance members + * of a class. + * + * @param node The class node. + * @param isStatic A value indicating whether to generate expressions for static or + * instance members. + */ + function generateClassElementDecorationExpressions(node, isStatic) { + var members = getDecoratedClassElements(node, isStatic); + var expressions; + for (var _i = 0, members_6 = members; _i < members_6.length; _i++) { + var member = members_6[_i]; + var expression = generateClassElementDecorationExpression(node, member); + if (expression) { + if (!expressions) { + expressions = [expression]; + } + else { + expressions.push(expression); + } + } + } + return expressions; + } + /** + * Generates an expression used to evaluate class element decorators at runtime. + * + * @param node The class node that contains the member. + * @param member The class member. + */ + function generateClassElementDecorationExpression(node, member) { + var allDecorators = getAllDecoratorsOfClassElement(node, member); + var decoratorExpressions = transformAllDecoratorsOfDeclaration(member, node, allDecorators); + if (!decoratorExpressions) { + return undefined; + } + // Emit the call to __decorate. Given the following: + // + // class C { + // @dec method(@dec2 x) {} + // @dec get accessor() {} + // @dec prop; + // } + // + // The emit for a method is: + // + // __decorate([ + // dec, + // __param(0, dec2), + // __metadata("design:type", Function), + // __metadata("design:paramtypes", [Object]), + // __metadata("design:returntype", void 0) + // ], C.prototype, "method", null); + // + // The emit for an accessor is: + // + // __decorate([ + // dec + // ], C.prototype, "accessor", null); + // + // The emit for a property is: + // + // __decorate([ + // dec + // ], C.prototype, "prop"); + // + var prefix = getClassMemberPrefix(node, member); + var memberName = getExpressionForPropertyName(member, /*generateNameForComputedPropertyName*/ true); + var descriptor = languageVersion > 0 /* ES3 */ + ? member.kind === 159 /* PropertyDeclaration */ + // We emit `void 0` here to indicate to `__decorate` that it can invoke `Object.defineProperty` directly, but that it + // should not invoke `Object.getOwnPropertyDescriptor`. + ? ts.createVoidZero() + // We emit `null` here to indicate to `__decorate` that it can invoke `Object.getOwnPropertyDescriptor` directly. + // We have this extra argument here so that we can inject an explicit property descriptor at a later date. + : ts.createNull() + : undefined; + var helper = createDecorateHelper(context, decoratorExpressions, prefix, memberName, descriptor, ts.moveRangePastDecorators(member)); + ts.setEmitFlags(helper, 1536 /* NoComments */); + return helper; + } + /** + * Generates a __decorate helper call for a class constructor. + * + * @param node The class node. + */ + function addConstructorDecorationStatement(statements, node) { + var expression = generateConstructorDecorationExpression(node); + if (expression) { + statements.push(ts.setOriginalNode(ts.createExpressionStatement(expression), node)); + } + } + /** + * Generates a __decorate helper call for a class constructor. + * + * @param node The class node. + */ + function generateConstructorDecorationExpression(node) { + var allDecorators = getAllDecoratorsOfConstructor(node); + var decoratorExpressions = transformAllDecoratorsOfDeclaration(node, node, allDecorators); + if (!decoratorExpressions) { + return undefined; + } + var classAlias = classAliases && classAliases[ts.getOriginalNodeId(node)]; + var localName = ts.getLocalName(node, /*allowComments*/ false, /*allowSourceMaps*/ true); + var decorate = createDecorateHelper(context, decoratorExpressions, localName); + var expression = ts.createAssignment(localName, classAlias ? ts.createAssignment(classAlias, decorate) : decorate); + ts.setEmitFlags(expression, 1536 /* NoComments */); + ts.setSourceMapRange(expression, ts.moveRangePastDecorators(node)); + return expression; + } + /** + * Transforms a decorator into an expression. + * + * @param decorator The decorator node. + */ + function transformDecorator(decorator) { + return ts.visitNode(decorator.expression, visitor, ts.isExpression); + } + /** + * Transforms the decorators of a parameter. + * + * @param decorators The decorators for the parameter at the provided offset. + * @param parameterOffset The offset of the parameter. + */ + function transformDecoratorsOfParameter(decorators, parameterOffset) { + var expressions; + if (decorators) { + expressions = []; + for (var _i = 0, decorators_1 = decorators; _i < decorators_1.length; _i++) { + var decorator = decorators_1[_i]; + var helper = createParamHelper(context, transformDecorator(decorator), parameterOffset, + /*location*/ decorator.expression); + ts.setEmitFlags(helper, 1536 /* NoComments */); + expressions.push(helper); + } + } + return expressions; + } + /** + * Adds optional type metadata for a declaration. + * + * @param node The declaration node. + * @param decoratorExpressions The destination array to which to add new decorator expressions. + */ + function addTypeMetadata(node, container, decoratorExpressions) { + if (USE_NEW_TYPE_METADATA_FORMAT) { + addNewTypeMetadata(node, container, decoratorExpressions); + } + else { + addOldTypeMetadata(node, container, decoratorExpressions); + } + } + function addOldTypeMetadata(node, container, decoratorExpressions) { + if (compilerOptions.emitDecoratorMetadata) { + if (shouldAddTypeMetadata(node)) { + decoratorExpressions.push(createMetadataHelper(context, "design:type", serializeTypeOfNode(node))); + } + if (shouldAddParamTypesMetadata(node)) { + decoratorExpressions.push(createMetadataHelper(context, "design:paramtypes", serializeParameterTypesOfNode(node, container))); + } + if (shouldAddReturnTypeMetadata(node)) { + decoratorExpressions.push(createMetadataHelper(context, "design:returntype", serializeReturnTypeOfNode(node))); + } + } + } + function addNewTypeMetadata(node, container, decoratorExpressions) { + if (compilerOptions.emitDecoratorMetadata) { + var properties = void 0; + if (shouldAddTypeMetadata(node)) { + (properties || (properties = [])).push(ts.createPropertyAssignment("type", ts.createArrowFunction(/*modifiers*/ undefined, /*typeParameters*/ undefined, [], /*type*/ undefined, ts.createToken(38 /* EqualsGreaterThanToken */), serializeTypeOfNode(node)))); + } + if (shouldAddParamTypesMetadata(node)) { + (properties || (properties = [])).push(ts.createPropertyAssignment("paramTypes", ts.createArrowFunction(/*modifiers*/ undefined, /*typeParameters*/ undefined, [], /*type*/ undefined, ts.createToken(38 /* EqualsGreaterThanToken */), serializeParameterTypesOfNode(node, container)))); + } + if (shouldAddReturnTypeMetadata(node)) { + (properties || (properties = [])).push(ts.createPropertyAssignment("returnType", ts.createArrowFunction(/*modifiers*/ undefined, /*typeParameters*/ undefined, [], /*type*/ undefined, ts.createToken(38 /* EqualsGreaterThanToken */), serializeReturnTypeOfNode(node)))); + } + if (properties) { + decoratorExpressions.push(createMetadataHelper(context, "design:typeinfo", ts.createObjectLiteral(properties, /*multiLine*/ true))); + } + } + } + /** + * Determines whether to emit the "design:type" metadata based on the node's kind. + * The caller should have already tested whether the node has decorators and whether the + * emitDecoratorMetadata compiler option is set. + * + * @param node The node to test. + */ + function shouldAddTypeMetadata(node) { + var kind = node.kind; + return kind === 161 /* MethodDeclaration */ + || kind === 163 /* GetAccessor */ + || kind === 164 /* SetAccessor */ + || kind === 159 /* PropertyDeclaration */; + } + /** + * Determines whether to emit the "design:returntype" metadata based on the node's kind. + * The caller should have already tested whether the node has decorators and whether the + * emitDecoratorMetadata compiler option is set. + * + * @param node The node to test. + */ + function shouldAddReturnTypeMetadata(node) { + return node.kind === 161 /* MethodDeclaration */; + } + /** + * Determines whether to emit the "design:paramtypes" metadata based on the node's kind. + * The caller should have already tested whether the node has decorators and whether the + * emitDecoratorMetadata compiler option is set. + * + * @param node The node to test. + */ + function shouldAddParamTypesMetadata(node) { + switch (node.kind) { + case 245 /* ClassDeclaration */: + case 214 /* ClassExpression */: + return ts.getFirstConstructorWithBody(node) !== undefined; + case 161 /* MethodDeclaration */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + return true; + } + return false; + } + function getAccessorTypeNode(node) { + var accessors = resolver.getAllAccessorDeclarations(node); + return accessors.setAccessor && ts.getSetAccessorTypeAnnotationNode(accessors.setAccessor) + || accessors.getAccessor && ts.getEffectiveReturnTypeNode(accessors.getAccessor); + } + /** + * Serializes the type of a node for use with decorator type metadata. + * + * @param node The node that should have its type serialized. + */ + function serializeTypeOfNode(node) { + switch (node.kind) { + case 159 /* PropertyDeclaration */: + case 156 /* Parameter */: + return serializeTypeNode(node.type); + case 164 /* SetAccessor */: + case 163 /* GetAccessor */: + return serializeTypeNode(getAccessorTypeNode(node)); + case 245 /* ClassDeclaration */: + case 214 /* ClassExpression */: + case 161 /* MethodDeclaration */: + return ts.createIdentifier("Function"); + default: + return ts.createVoidZero(); + } + } + /** + * Serializes the types of the parameters of a node for use with decorator type metadata. + * + * @param node The node that should have its parameter types serialized. + */ + function serializeParameterTypesOfNode(node, container) { + var valueDeclaration = ts.isClassLike(node) + ? ts.getFirstConstructorWithBody(node) + : ts.isFunctionLike(node) && ts.nodeIsPresent(node.body) + ? node + : undefined; + var expressions = []; + if (valueDeclaration) { + var parameters = getParametersOfDecoratedDeclaration(valueDeclaration, container); + var numParameters = parameters.length; + for (var i = 0; i < numParameters; i++) { + var parameter = parameters[i]; + if (i === 0 && ts.isIdentifier(parameter.name) && parameter.name.escapedText === "this") { + continue; + } + if (parameter.dotDotDotToken) { + expressions.push(serializeTypeNode(ts.getRestParameterElementType(parameter.type))); + } + else { + expressions.push(serializeTypeOfNode(parameter)); + } + } + } + return ts.createArrayLiteral(expressions); + } + function getParametersOfDecoratedDeclaration(node, container) { + if (container && node.kind === 163 /* GetAccessor */) { + var setAccessor = ts.getAllAccessorDeclarations(container.members, node).setAccessor; + if (setAccessor) { + return setAccessor.parameters; + } + } + return node.parameters; + } + /** + * Serializes the return type of a node for use with decorator type metadata. + * + * @param node The node that should have its return type serialized. + */ + function serializeReturnTypeOfNode(node) { + if (ts.isFunctionLike(node) && node.type) { + return serializeTypeNode(node.type); + } + else if (ts.isAsyncFunction(node)) { + return ts.createIdentifier("Promise"); + } + return ts.createVoidZero(); + } + /** + * Serializes a type node for use with decorator type metadata. + * + * Types are serialized in the following fashion: + * - Void types point to "undefined" (e.g. "void 0") + * - Function and Constructor types point to the global "Function" constructor. + * - Interface types with a call or construct signature types point to the global + * "Function" constructor. + * - Array and Tuple types point to the global "Array" constructor. + * - Type predicates and booleans point to the global "Boolean" constructor. + * - String literal types and strings point to the global "String" constructor. + * - Enum and number types point to the global "Number" constructor. + * - Symbol types point to the global "Symbol" constructor. + * - Type references to classes (or class-like variables) point to the constructor for the class. + * - Anything else points to the global "Object" constructor. + * + * @param node The type node to serialize. + */ + function serializeTypeNode(node) { + if (node === undefined) { + return ts.createIdentifier("Object"); + } + switch (node.kind) { + case 110 /* VoidKeyword */: + case 146 /* UndefinedKeyword */: + case 100 /* NullKeyword */: + case 137 /* NeverKeyword */: + return ts.createVoidZero(); + case 182 /* ParenthesizedType */: + return serializeTypeNode(node.type); + case 170 /* FunctionType */: + case 171 /* ConstructorType */: + return ts.createIdentifier("Function"); + case 174 /* ArrayType */: + case 175 /* TupleType */: + return ts.createIdentifier("Array"); + case 168 /* TypePredicate */: + case 128 /* BooleanKeyword */: + return ts.createIdentifier("Boolean"); + case 143 /* StringKeyword */: + return ts.createIdentifier("String"); + case 141 /* ObjectKeyword */: + return ts.createIdentifier("Object"); + case 187 /* LiteralType */: + switch (node.literal.kind) { + case 10 /* StringLiteral */: + return ts.createIdentifier("String"); + case 207 /* PrefixUnaryExpression */: + case 8 /* NumericLiteral */: + return ts.createIdentifier("Number"); + case 9 /* BigIntLiteral */: + return getGlobalBigIntNameWithFallback(); + case 106 /* TrueKeyword */: + case 91 /* FalseKeyword */: + return ts.createIdentifier("Boolean"); + default: + return ts.Debug.failBadSyntaxKind(node.literal); + } + case 140 /* NumberKeyword */: + return ts.createIdentifier("Number"); + case 151 /* BigIntKeyword */: + return getGlobalBigIntNameWithFallback(); + case 144 /* SymbolKeyword */: + return languageVersion < 2 /* ES2015 */ + ? getGlobalSymbolNameWithFallback() + : ts.createIdentifier("Symbol"); + case 169 /* TypeReference */: + return serializeTypeReferenceNode(node); + case 179 /* IntersectionType */: + case 178 /* UnionType */: + return serializeTypeList(node.types); + case 180 /* ConditionalType */: + return serializeTypeList([node.trueType, node.falseType]); + case 184 /* TypeOperator */: + if (node.operator === 138 /* ReadonlyKeyword */) { + return serializeTypeNode(node.type); + } + break; + case 172 /* TypeQuery */: + case 185 /* IndexedAccessType */: + case 186 /* MappedType */: + case 173 /* TypeLiteral */: + case 125 /* AnyKeyword */: + case 148 /* UnknownKeyword */: + case 183 /* ThisType */: + case 188 /* ImportType */: + break; + // handle JSDoc types from an invalid parse + case 295 /* JSDocAllType */: + case 296 /* JSDocUnknownType */: + case 300 /* JSDocFunctionType */: + case 301 /* JSDocVariadicType */: + case 302 /* JSDocNamepathType */: + break; + case 297 /* JSDocNullableType */: + case 298 /* JSDocNonNullableType */: + case 299 /* JSDocOptionalType */: + return serializeTypeNode(node.type); + default: + return ts.Debug.failBadSyntaxKind(node); + } + return ts.createIdentifier("Object"); + } + function serializeTypeList(types) { + // Note when updating logic here also update getEntityNameForDecoratorMetadata + // so that aliases can be marked as referenced + var serializedUnion; + for (var _i = 0, types_21 = types; _i < types_21.length; _i++) { + var typeNode = types_21[_i]; + while (typeNode.kind === 182 /* ParenthesizedType */) { + typeNode = typeNode.type; // Skip parens if need be + } + if (typeNode.kind === 137 /* NeverKeyword */) { + continue; // Always elide `never` from the union/intersection if possible + } + if (!strictNullChecks && (typeNode.kind === 100 /* NullKeyword */ || typeNode.kind === 146 /* UndefinedKeyword */)) { + continue; // Elide null and undefined from unions for metadata, just like what we did prior to the implementation of strict null checks + } + var serializedIndividual = serializeTypeNode(typeNode); + if (ts.isIdentifier(serializedIndividual) && serializedIndividual.escapedText === "Object") { + // One of the individual is global object, return immediately + return serializedIndividual; + } + // If there exists union that is not void 0 expression, check if the the common type is identifier. + // anything more complex and we will just default to Object + else if (serializedUnion) { + // Different types + if (!ts.isIdentifier(serializedUnion) || + !ts.isIdentifier(serializedIndividual) || + serializedUnion.escapedText !== serializedIndividual.escapedText) { + return ts.createIdentifier("Object"); + } + } + else { + // Initialize the union type + serializedUnion = serializedIndividual; + } + } + // If we were able to find common type, use it + return serializedUnion || ts.createVoidZero(); // Fallback is only hit if all union constituients are null/undefined/never + } + /** + * Serializes a TypeReferenceNode to an appropriate JS constructor value for use with + * decorator type metadata. + * + * @param node The type reference node. + */ + function serializeTypeReferenceNode(node) { + var kind = resolver.getTypeReferenceSerializationKind(node.typeName, currentNameScope || currentLexicalScope); + switch (kind) { + case ts.TypeReferenceSerializationKind.Unknown: + // From conditional type type reference that cannot be resolved is Similar to any or unknown + if (ts.findAncestor(node, function (n) { return n.parent && ts.isConditionalTypeNode(n.parent) && (n.parent.trueType === n || n.parent.falseType === n); })) { + return ts.createIdentifier("Object"); + } + var serialized = serializeEntityNameAsExpressionFallback(node.typeName); + var temp = ts.createTempVariable(hoistVariableDeclaration); + return ts.createConditional(ts.createTypeCheck(ts.createAssignment(temp, serialized), "function"), temp, ts.createIdentifier("Object")); + case ts.TypeReferenceSerializationKind.TypeWithConstructSignatureAndValue: + return serializeEntityNameAsExpression(node.typeName); + case ts.TypeReferenceSerializationKind.VoidNullableOrNeverType: + return ts.createVoidZero(); + case ts.TypeReferenceSerializationKind.BigIntLikeType: + return getGlobalBigIntNameWithFallback(); + case ts.TypeReferenceSerializationKind.BooleanType: + return ts.createIdentifier("Boolean"); + case ts.TypeReferenceSerializationKind.NumberLikeType: + return ts.createIdentifier("Number"); + case ts.TypeReferenceSerializationKind.StringLikeType: + return ts.createIdentifier("String"); + case ts.TypeReferenceSerializationKind.ArrayLikeType: + return ts.createIdentifier("Array"); + case ts.TypeReferenceSerializationKind.ESSymbolType: + return languageVersion < 2 /* ES2015 */ + ? getGlobalSymbolNameWithFallback() + : ts.createIdentifier("Symbol"); + case ts.TypeReferenceSerializationKind.TypeWithCallSignature: + return ts.createIdentifier("Function"); + case ts.TypeReferenceSerializationKind.Promise: + return ts.createIdentifier("Promise"); + case ts.TypeReferenceSerializationKind.ObjectType: + return ts.createIdentifier("Object"); + default: + return ts.Debug.assertNever(kind); + } + } + function createCheckedValue(left, right) { + return ts.createLogicalAnd(ts.createStrictInequality(ts.createTypeOf(left), ts.createLiteral("undefined")), right); + } + /** + * Serializes an entity name which may not exist at runtime, but whose access shouldn't throw + * + * @param node The entity name to serialize. + */ + function serializeEntityNameAsExpressionFallback(node) { + if (node.kind === 75 /* Identifier */) { + // A -> typeof A !== undefined && A + var copied = serializeEntityNameAsExpression(node); + return createCheckedValue(copied, copied); + } + if (node.left.kind === 75 /* Identifier */) { + // A.B -> typeof A !== undefined && A.B + return createCheckedValue(serializeEntityNameAsExpression(node.left), serializeEntityNameAsExpression(node)); + } + // A.B.C -> typeof A !== undefined && (_a = A.B) !== void 0 && _a.C + var left = serializeEntityNameAsExpressionFallback(node.left); + var temp = ts.createTempVariable(hoistVariableDeclaration); + return ts.createLogicalAnd(ts.createLogicalAnd(left.left, ts.createStrictInequality(ts.createAssignment(temp, left.right), ts.createVoidZero())), ts.createPropertyAccess(temp, node.right)); + } + /** + * Serializes an entity name as an expression for decorator type metadata. + * + * @param node The entity name to serialize. + */ + function serializeEntityNameAsExpression(node) { + switch (node.kind) { + case 75 /* Identifier */: + // Create a clone of the name with a new parent, and treat it as if it were + // a source tree node for the purposes of the checker. + var name = ts.getMutableClone(node); + name.flags &= ~8 /* Synthesized */; + name.original = undefined; + name.parent = ts.getParseTreeNode(currentLexicalScope); // ensure the parent is set to a parse tree node. + return name; + case 153 /* QualifiedName */: + return serializeQualifiedNameAsExpression(node); + } + } + /** + * Serializes an qualified name as an expression for decorator type metadata. + * + * @param node The qualified name to serialize. + * @param useFallback A value indicating whether to use logical operators to test for the + * qualified name at runtime. + */ + function serializeQualifiedNameAsExpression(node) { + return ts.createPropertyAccess(serializeEntityNameAsExpression(node.left), node.right); + } + /** + * Gets an expression that points to the global "Symbol" constructor at runtime if it is + * available. + */ + function getGlobalSymbolNameWithFallback() { + return ts.createConditional(ts.createTypeCheck(ts.createIdentifier("Symbol"), "function"), ts.createIdentifier("Symbol"), ts.createIdentifier("Object")); + } + /** + * Gets an expression that points to the global "BigInt" constructor at runtime if it is + * available. + */ + function getGlobalBigIntNameWithFallback() { + return languageVersion < 99 /* ESNext */ + ? ts.createConditional(ts.createTypeCheck(ts.createIdentifier("BigInt"), "function"), ts.createIdentifier("BigInt"), ts.createIdentifier("Object")) + : ts.createIdentifier("BigInt"); + } + /** + * Gets an expression that represents a property name (for decorated properties or enums). + * For a computed property, a name is generated for the node. + * + * @param member The member whose name should be converted into an expression. + */ + function getExpressionForPropertyName(member, generateNameForComputedPropertyName) { + var name = member.name; + if (ts.isPrivateIdentifier(name)) { + return ts.createIdentifier(""); + } + else if (ts.isComputedPropertyName(name)) { + return generateNameForComputedPropertyName && !ts.isSimpleInlineableExpression(name.expression) + ? ts.getGeneratedNameForNode(name) + : name.expression; + } + else if (ts.isIdentifier(name)) { + return ts.createLiteral(ts.idText(name)); + } + else { + return ts.getSynthesizedClone(name); + } + } + /** + * Visits the property name of a class element, for use when emitting property + * initializers. For a computed property on a node with decorators, a temporary + * value is stored for later use. + * + * @param member The member whose name should be visited. + */ + function visitPropertyNameOfClassElement(member) { + var name = member.name; + // Computed property names need to be transformed into a hoisted variable when they are used more than once. + // The names are used more than once when: + // - the property is non-static and its initializer is moved to the constructor (when there are parameter property assignments). + // - the property has a decorator. + if (ts.isComputedPropertyName(name) && ((!ts.hasStaticModifier(member) && currentClassHasParameterProperties) || ts.some(member.decorators))) { + var expression = ts.visitNode(name.expression, visitor, ts.isExpression); + var innerExpression = ts.skipPartiallyEmittedExpressions(expression); + if (!ts.isSimpleInlineableExpression(innerExpression)) { + var generatedName = ts.getGeneratedNameForNode(name); + hoistVariableDeclaration(generatedName); + return ts.updateComputedPropertyName(name, ts.createAssignment(generatedName, expression)); + } + } + return ts.visitNode(name, visitor, ts.isPropertyName); + } + /** + * Transforms a HeritageClause with TypeScript syntax. + * + * This function will only be called when one of the following conditions are met: + * - The node is a non-`extends` heritage clause that should be elided. + * - The node is an `extends` heritage clause that should be visited, but only allow a single type. + * + * @param node The HeritageClause to transform. + */ + function visitHeritageClause(node) { + if (node.token === 113 /* ImplementsKeyword */) { + // implements clauses are elided + return undefined; + } + return ts.visitEachChild(node, visitor, context); + } + /** + * Transforms an ExpressionWithTypeArguments with TypeScript syntax. + * + * This function will only be called when one of the following conditions are met: + * - The node contains type arguments that should be elided. + * + * @param node The ExpressionWithTypeArguments to transform. + */ + function visitExpressionWithTypeArguments(node) { + return ts.updateExpressionWithTypeArguments(node, + /*typeArguments*/ undefined, ts.visitNode(node.expression, visitor, ts.isLeftHandSideExpression)); + } + /** + * Determines whether to emit a function-like declaration. We should not emit the + * declaration if it does not have a body. + * + * @param node The declaration node. + */ + function shouldEmitFunctionLikeDeclaration(node) { + return !ts.nodeIsMissing(node.body); + } + function visitPropertyDeclaration(node) { + if (node.flags & 8388608 /* Ambient */) { + return undefined; + } + var updated = ts.updateProperty(node, + /*decorators*/ undefined, ts.visitNodes(node.modifiers, visitor, ts.isModifier), visitPropertyNameOfClassElement(node), + /*questionOrExclamationToken*/ undefined, + /*type*/ undefined, ts.visitNode(node.initializer, visitor)); + if (updated !== node) { + // While we emit the source map for the node after skipping decorators and modifiers, + // we need to emit the comments for the original range. + ts.setCommentRange(updated, node); + ts.setSourceMapRange(updated, ts.moveRangePastDecorators(node)); + } + return updated; + } + function visitConstructor(node) { + if (!shouldEmitFunctionLikeDeclaration(node)) { + return undefined; + } + return ts.updateConstructor(node, + /*decorators*/ undefined, + /*modifiers*/ undefined, ts.visitParameterList(node.parameters, visitor, context), transformConstructorBody(node.body, node)); + } + function transformConstructorBody(body, constructor) { + var parametersWithPropertyAssignments = constructor && + ts.filter(constructor.parameters, function (p) { return ts.isParameterPropertyDeclaration(p, constructor); }); + if (!ts.some(parametersWithPropertyAssignments)) { + return ts.visitFunctionBody(body, visitor, context); + } + var statements = []; + var indexOfFirstStatement = 0; + resumeLexicalEnvironment(); + indexOfFirstStatement = ts.addPrologueDirectivesAndInitialSuperCall(constructor, statements, visitor); + // Add parameters with property assignments. Transforms this: + // + // constructor (public x, public y) { + // } + // + // Into this: + // + // constructor (x, y) { + // this.x = x; + // this.y = y; + // } + // + ts.addRange(statements, ts.map(parametersWithPropertyAssignments, transformParameterWithPropertyAssignment)); + // Add the existing statements, skipping the initial super call. + ts.addRange(statements, ts.visitNodes(body.statements, visitor, ts.isStatement, indexOfFirstStatement)); + // End the lexical environment. + statements = ts.mergeLexicalEnvironment(statements, endLexicalEnvironment()); + var block = ts.createBlock(ts.setTextRange(ts.createNodeArray(statements), body.statements), /*multiLine*/ true); + ts.setTextRange(block, /*location*/ body); + ts.setOriginalNode(block, body); + return block; + } + /** + * Transforms a parameter into a property assignment statement. + * + * @param node The parameter declaration. + */ + function transformParameterWithPropertyAssignment(node) { + var name = node.name; + if (!ts.isIdentifier(name)) { + return undefined; + } + var propertyName = ts.getMutableClone(name); + ts.setEmitFlags(propertyName, 1536 /* NoComments */ | 48 /* NoSourceMap */); + var localName = ts.getMutableClone(name); + ts.setEmitFlags(localName, 1536 /* NoComments */); + return ts.startOnNewLine(ts.removeAllComments(ts.setTextRange(ts.setOriginalNode(ts.createExpressionStatement(ts.createAssignment(ts.setTextRange(ts.createPropertyAccess(ts.createThis(), propertyName), node.name), localName)), node), ts.moveRangePos(node, -1)))); + } + function visitMethodDeclaration(node) { + if (!shouldEmitFunctionLikeDeclaration(node)) { + return undefined; + } + var updated = ts.updateMethod(node, + /*decorators*/ undefined, ts.visitNodes(node.modifiers, modifierVisitor, ts.isModifier), node.asteriskToken, visitPropertyNameOfClassElement(node), + /*questionToken*/ undefined, + /*typeParameters*/ undefined, ts.visitParameterList(node.parameters, visitor, context), + /*type*/ undefined, ts.visitFunctionBody(node.body, visitor, context)); + if (updated !== node) { + // While we emit the source map for the node after skipping decorators and modifiers, + // we need to emit the comments for the original range. + ts.setCommentRange(updated, node); + ts.setSourceMapRange(updated, ts.moveRangePastDecorators(node)); + } + return updated; + } + /** + * Determines whether to emit an accessor declaration. We should not emit the + * declaration if it does not have a body and is abstract. + * + * @param node The declaration node. + */ + function shouldEmitAccessorDeclaration(node) { + return !(ts.nodeIsMissing(node.body) && ts.hasModifier(node, 128 /* Abstract */)); + } + function visitGetAccessor(node) { + if (!shouldEmitAccessorDeclaration(node)) { + return undefined; + } + var updated = ts.updateGetAccessor(node, + /*decorators*/ undefined, ts.visitNodes(node.modifiers, modifierVisitor, ts.isModifier), visitPropertyNameOfClassElement(node), ts.visitParameterList(node.parameters, visitor, context), + /*type*/ undefined, ts.visitFunctionBody(node.body, visitor, context) || ts.createBlock([])); + if (updated !== node) { + // While we emit the source map for the node after skipping decorators and modifiers, + // we need to emit the comments for the original range. + ts.setCommentRange(updated, node); + ts.setSourceMapRange(updated, ts.moveRangePastDecorators(node)); + } + return updated; + } + function visitSetAccessor(node) { + if (!shouldEmitAccessorDeclaration(node)) { + return undefined; + } + var updated = ts.updateSetAccessor(node, + /*decorators*/ undefined, ts.visitNodes(node.modifiers, modifierVisitor, ts.isModifier), visitPropertyNameOfClassElement(node), ts.visitParameterList(node.parameters, visitor, context), ts.visitFunctionBody(node.body, visitor, context) || ts.createBlock([])); + if (updated !== node) { + // While we emit the source map for the node after skipping decorators and modifiers, + // we need to emit the comments for the original range. + ts.setCommentRange(updated, node); + ts.setSourceMapRange(updated, ts.moveRangePastDecorators(node)); + } + return updated; + } + function visitFunctionDeclaration(node) { + if (!shouldEmitFunctionLikeDeclaration(node)) { + return ts.createNotEmittedStatement(node); + } + var updated = ts.updateFunctionDeclaration(node, + /*decorators*/ undefined, ts.visitNodes(node.modifiers, modifierVisitor, ts.isModifier), node.asteriskToken, node.name, + /*typeParameters*/ undefined, ts.visitParameterList(node.parameters, visitor, context), + /*type*/ undefined, ts.visitFunctionBody(node.body, visitor, context) || ts.createBlock([])); + if (isExportOfNamespace(node)) { + var statements = [updated]; + addExportMemberAssignment(statements, node); + return statements; + } + return updated; + } + function visitFunctionExpression(node) { + if (!shouldEmitFunctionLikeDeclaration(node)) { + return ts.createOmittedExpression(); + } + var updated = ts.updateFunctionExpression(node, ts.visitNodes(node.modifiers, modifierVisitor, ts.isModifier), node.asteriskToken, node.name, + /*typeParameters*/ undefined, ts.visitParameterList(node.parameters, visitor, context), + /*type*/ undefined, ts.visitFunctionBody(node.body, visitor, context) || ts.createBlock([])); + return updated; + } + function visitArrowFunction(node) { + var updated = ts.updateArrowFunction(node, ts.visitNodes(node.modifiers, modifierVisitor, ts.isModifier), + /*typeParameters*/ undefined, ts.visitParameterList(node.parameters, visitor, context), + /*type*/ undefined, node.equalsGreaterThanToken, ts.visitFunctionBody(node.body, visitor, context)); + return updated; + } + function visitParameter(node) { + if (ts.parameterIsThisKeyword(node)) { + return undefined; + } + var updated = ts.updateParameter(node, + /*decorators*/ undefined, + /*modifiers*/ undefined, node.dotDotDotToken, ts.visitNode(node.name, visitor, ts.isBindingName), + /*questionToken*/ undefined, + /*type*/ undefined, ts.visitNode(node.initializer, visitor, ts.isExpression)); + if (updated !== node) { + // While we emit the source map for the node after skipping decorators and modifiers, + // we need to emit the comments for the original range. + ts.setCommentRange(updated, node); + ts.setTextRange(updated, ts.moveRangePastModifiers(node)); + ts.setSourceMapRange(updated, ts.moveRangePastModifiers(node)); + ts.setEmitFlags(updated.name, 32 /* NoTrailingSourceMap */); + } + return updated; + } + function visitVariableStatement(node) { + if (isExportOfNamespace(node)) { + var variables = ts.getInitializedVariables(node.declarationList); + if (variables.length === 0) { + // elide statement if there are no initialized variables. + return undefined; + } + return ts.setTextRange(ts.createExpressionStatement(ts.inlineExpressions(ts.map(variables, transformInitializedVariable))), node); + } + else { + return ts.visitEachChild(node, visitor, context); + } + } + function transformInitializedVariable(node) { + var name = node.name; + if (ts.isBindingPattern(name)) { + return ts.flattenDestructuringAssignment(node, visitor, context, 0 /* All */, + /*needsValue*/ false, createNamespaceExportExpression); + } + else { + return ts.setTextRange(ts.createAssignment(getNamespaceMemberNameWithSourceMapsAndWithoutComments(name), ts.visitNode(node.initializer, visitor, ts.isExpression)), + /*location*/ node); + } + } + function visitVariableDeclaration(node) { + return ts.updateTypeScriptVariableDeclaration(node, ts.visitNode(node.name, visitor, ts.isBindingName), + /*exclaimationToken*/ undefined, + /*type*/ undefined, ts.visitNode(node.initializer, visitor, ts.isExpression)); + } + function visitParenthesizedExpression(node) { + var innerExpression = ts.skipOuterExpressions(node.expression, ~6 /* Assertions */); + if (ts.isAssertionExpression(innerExpression)) { + // Make sure we consider all nested cast expressions, e.g.: + // (-A).x; + var expression = ts.visitNode(node.expression, visitor, ts.isExpression); + // We have an expression of the form: (SubExpr). Emitting this as (SubExpr) + // is really not desirable. We would like to emit the subexpression as-is. Omitting + // the parentheses, however, could cause change in the semantics of the generated + // code if the casted expression has a lower precedence than the rest of the + // expression. + // + // To preserve comments, we return a "PartiallyEmittedExpression" here which will + // preserve the position information of the original expression. + // + // Due to the auto-parenthesization rules used by the visitor and factory functions + // we can safely elide the parentheses here, as a new synthetic + // ParenthesizedExpression will be inserted if we remove parentheses too + // aggressively. + // HOWEVER - if there are leading comments on the expression itself, to handle ASI + // correctly for return and throw, we must keep the parenthesis + if (ts.length(ts.getLeadingCommentRangesOfNode(expression, currentSourceFile))) { + return ts.updateParen(node, expression); + } + return ts.createPartiallyEmittedExpression(expression, node); + } + return ts.visitEachChild(node, visitor, context); + } + function visitAssertionExpression(node) { + var expression = ts.visitNode(node.expression, visitor, ts.isExpression); + return ts.createPartiallyEmittedExpression(expression, node); + } + function visitNonNullExpression(node) { + var expression = ts.visitNode(node.expression, visitor, ts.isLeftHandSideExpression); + return ts.createPartiallyEmittedExpression(expression, node); + } + function visitCallExpression(node) { + return ts.updateCall(node, ts.visitNode(node.expression, visitor, ts.isExpression), + /*typeArguments*/ undefined, ts.visitNodes(node.arguments, visitor, ts.isExpression)); + } + function visitNewExpression(node) { + return ts.updateNew(node, ts.visitNode(node.expression, visitor, ts.isExpression), + /*typeArguments*/ undefined, ts.visitNodes(node.arguments, visitor, ts.isExpression)); + } + function visitTaggedTemplateExpression(node) { + return ts.updateTaggedTemplate(node, ts.visitNode(node.tag, visitor, ts.isExpression), + /*typeArguments*/ undefined, ts.visitNode(node.template, visitor, ts.isExpression)); + } + function visitJsxSelfClosingElement(node) { + return ts.updateJsxSelfClosingElement(node, ts.visitNode(node.tagName, visitor, ts.isJsxTagNameExpression), + /*typeArguments*/ undefined, ts.visitNode(node.attributes, visitor, ts.isJsxAttributes)); + } + function visitJsxJsxOpeningElement(node) { + return ts.updateJsxOpeningElement(node, ts.visitNode(node.tagName, visitor, ts.isJsxTagNameExpression), + /*typeArguments*/ undefined, ts.visitNode(node.attributes, visitor, ts.isJsxAttributes)); + } + /** + * Determines whether to emit an enum declaration. + * + * @param node The enum declaration node. + */ + function shouldEmitEnumDeclaration(node) { + return !ts.isEnumConst(node) + || compilerOptions.preserveConstEnums + || compilerOptions.isolatedModules; + } + /** + * Visits an enum declaration. + * + * This function will be called any time a TypeScript enum is encountered. + * + * @param node The enum declaration node. + */ + function visitEnumDeclaration(node) { + if (!shouldEmitEnumDeclaration(node)) { + return ts.createNotEmittedStatement(node); + } + var statements = []; + // We request to be advised when the printer is about to print this node. This allows + // us to set up the correct state for later substitutions. + var emitFlags = 2 /* AdviseOnEmitNode */; + // If needed, we should emit a variable declaration for the enum. If we emit + // a leading variable declaration, we should not emit leading comments for the + // enum body. + var varAdded = addVarForEnumOrModuleDeclaration(statements, node); + if (varAdded) { + // We should still emit the comments if we are emitting a system module. + if (moduleKind !== ts.ModuleKind.System || currentLexicalScope !== currentSourceFile) { + emitFlags |= 512 /* NoLeadingComments */; + } + } + // `parameterName` is the declaration name used inside of the enum. + var parameterName = getNamespaceParameterName(node); + // `containerName` is the expression used inside of the enum for assignments. + var containerName = getNamespaceContainerName(node); + // `exportName` is the expression used within this node's container for any exported references. + var exportName = ts.hasModifier(node, 1 /* Export */) + ? ts.getExternalModuleOrNamespaceExportName(currentNamespaceContainerName, node, /*allowComments*/ false, /*allowSourceMaps*/ true) + : ts.getLocalName(node, /*allowComments*/ false, /*allowSourceMaps*/ true); + // x || (x = {}) + // exports.x || (exports.x = {}) + var moduleArg = ts.createLogicalOr(exportName, ts.createAssignment(exportName, ts.createObjectLiteral())); + if (hasNamespaceQualifiedExportName(node)) { + // `localName` is the expression used within this node's containing scope for any local references. + var localName = ts.getLocalName(node, /*allowComments*/ false, /*allowSourceMaps*/ true); + // x = (exports.x || (exports.x = {})) + moduleArg = ts.createAssignment(localName, moduleArg); + } + // (function (x) { + // x[x["y"] = 0] = "y"; + // ... + // })(x || (x = {})); + var enumStatement = ts.createExpressionStatement(ts.createCall(ts.createFunctionExpression( + /*modifiers*/ undefined, + /*asteriskToken*/ undefined, + /*name*/ undefined, + /*typeParameters*/ undefined, [ts.createParameter(/*decorators*/ undefined, /*modifiers*/ undefined, /*dotDotDotToken*/ undefined, parameterName)], + /*type*/ undefined, transformEnumBody(node, containerName)), + /*typeArguments*/ undefined, [moduleArg])); + ts.setOriginalNode(enumStatement, node); + if (varAdded) { + // If a variable was added, synthetic comments are emitted on it, not on the moduleStatement. + ts.setSyntheticLeadingComments(enumStatement, undefined); + ts.setSyntheticTrailingComments(enumStatement, undefined); + } + ts.setTextRange(enumStatement, node); + ts.addEmitFlags(enumStatement, emitFlags); + statements.push(enumStatement); + // Add a DeclarationMarker for the enum to preserve trailing comments and mark + // the end of the declaration. + statements.push(ts.createEndOfDeclarationMarker(node)); + return statements; + } + /** + * Transforms the body of an enum declaration. + * + * @param node The enum declaration node. + */ + function transformEnumBody(node, localName) { + var savedCurrentNamespaceLocalName = currentNamespaceContainerName; + currentNamespaceContainerName = localName; + var statements = []; + startLexicalEnvironment(); + var members = ts.map(node.members, transformEnumMember); + ts.insertStatementsAfterStandardPrologue(statements, endLexicalEnvironment()); + ts.addRange(statements, members); + currentNamespaceContainerName = savedCurrentNamespaceLocalName; + return ts.createBlock(ts.setTextRange(ts.createNodeArray(statements), /*location*/ node.members), + /*multiLine*/ true); + } + /** + * Transforms an enum member into a statement. + * + * @param member The enum member node. + */ + function transformEnumMember(member) { + // enums don't support computed properties + // we pass false as 'generateNameForComputedPropertyName' for a backward compatibility purposes + // old emitter always generate 'expression' part of the name as-is. + var name = getExpressionForPropertyName(member, /*generateNameForComputedPropertyName*/ false); + var valueExpression = transformEnumMemberDeclarationValue(member); + var innerAssignment = ts.createAssignment(ts.createElementAccess(currentNamespaceContainerName, name), valueExpression); + var outerAssignment = valueExpression.kind === 10 /* StringLiteral */ ? + innerAssignment : + ts.createAssignment(ts.createElementAccess(currentNamespaceContainerName, innerAssignment), name); + return ts.setTextRange(ts.createExpressionStatement(ts.setTextRange(outerAssignment, member)), member); + } + /** + * Transforms the value of an enum member. + * + * @param member The enum member node. + */ + function transformEnumMemberDeclarationValue(member) { + var value = resolver.getConstantValue(member); + if (value !== undefined) { + return ts.createLiteral(value); + } + else { + enableSubstitutionForNonQualifiedEnumMembers(); + if (member.initializer) { + return ts.visitNode(member.initializer, visitor, ts.isExpression); + } + else { + return ts.createVoidZero(); + } + } + } + /** + * Determines whether to elide a module declaration. + * + * @param node The module declaration node. + */ + function shouldEmitModuleDeclaration(nodeIn) { + var node = ts.getParseTreeNode(nodeIn, ts.isModuleDeclaration); + if (!node) { + // If we can't find a parse tree node, assume the node is instantiated. + return true; + } + return ts.isInstantiatedModule(node, !!compilerOptions.preserveConstEnums || !!compilerOptions.isolatedModules); + } + /** + * Determines whether an exported declaration will have a qualified export name (e.g. `f.x` + * or `exports.x`). + */ + function hasNamespaceQualifiedExportName(node) { + return isExportOfNamespace(node) + || (isExternalModuleExport(node) + && moduleKind !== ts.ModuleKind.ES2015 + && moduleKind !== ts.ModuleKind.ES2020 + && moduleKind !== ts.ModuleKind.ESNext + && moduleKind !== ts.ModuleKind.System); + } + /** + * Records that a declaration was emitted in the current scope, if it was the first + * declaration for the provided symbol. + */ + function recordEmittedDeclarationInScope(node) { + if (!currentScopeFirstDeclarationsOfName) { + currentScopeFirstDeclarationsOfName = ts.createUnderscoreEscapedMap(); + } + var name = declaredNameInScope(node); + if (!currentScopeFirstDeclarationsOfName.has(name)) { + currentScopeFirstDeclarationsOfName.set(name, node); + } + } + /** + * Determines whether a declaration is the first declaration with + * the same name emitted in the current scope. + */ + function isFirstEmittedDeclarationInScope(node) { + if (currentScopeFirstDeclarationsOfName) { + var name = declaredNameInScope(node); + return currentScopeFirstDeclarationsOfName.get(name) === node; + } + return true; + } + function declaredNameInScope(node) { + ts.Debug.assertNode(node.name, ts.isIdentifier); + return node.name.escapedText; + } + /** + * Adds a leading VariableStatement for a enum or module declaration. + */ + function addVarForEnumOrModuleDeclaration(statements, node) { + // Emit a variable statement for the module. We emit top-level enums as a `var` + // declaration to avoid static errors in global scripts scripts due to redeclaration. + // enums in any other scope are emitted as a `let` declaration. + var statement = ts.createVariableStatement(ts.visitNodes(node.modifiers, modifierVisitor, ts.isModifier), ts.createVariableDeclarationList([ + ts.createVariableDeclaration(ts.getLocalName(node, /*allowComments*/ false, /*allowSourceMaps*/ true)) + ], currentLexicalScope.kind === 290 /* SourceFile */ ? 0 /* None */ : 1 /* Let */)); + ts.setOriginalNode(statement, node); + recordEmittedDeclarationInScope(node); + if (isFirstEmittedDeclarationInScope(node)) { + // Adjust the source map emit to match the old emitter. + if (node.kind === 248 /* EnumDeclaration */) { + ts.setSourceMapRange(statement.declarationList, node); + } + else { + ts.setSourceMapRange(statement, node); + } + // Trailing comments for module declaration should be emitted after the function closure + // instead of the variable statement: + // + // /** Module comment*/ + // module m1 { + // function foo4Export() { + // } + // } // trailing comment module + // + // Should emit: + // + // /** Module comment*/ + // var m1; + // (function (m1) { + // function foo4Export() { + // } + // })(m1 || (m1 = {})); // trailing comment module + // + ts.setCommentRange(statement, node); + ts.addEmitFlags(statement, 1024 /* NoTrailingComments */ | 4194304 /* HasEndOfDeclarationMarker */); + statements.push(statement); + return true; + } + else { + // For an EnumDeclaration or ModuleDeclaration that merges with a preceeding + // declaration we do not emit a leading variable declaration. To preserve the + // begin/end semantics of the declararation and to properly handle exports + // we wrap the leading variable declaration in a `MergeDeclarationMarker`. + var mergeMarker = ts.createMergeDeclarationMarker(statement); + ts.setEmitFlags(mergeMarker, 1536 /* NoComments */ | 4194304 /* HasEndOfDeclarationMarker */); + statements.push(mergeMarker); + return false; + } + } + /** + * Visits a module declaration node. + * + * This function will be called any time a TypeScript namespace (ModuleDeclaration) is encountered. + * + * @param node The module declaration node. + */ + function visitModuleDeclaration(node) { + if (!shouldEmitModuleDeclaration(node)) { + return ts.createNotEmittedStatement(node); + } + ts.Debug.assertNode(node.name, ts.isIdentifier, "A TypeScript namespace should have an Identifier name."); + enableSubstitutionForNamespaceExports(); + var statements = []; + // We request to be advised when the printer is about to print this node. This allows + // us to set up the correct state for later substitutions. + var emitFlags = 2 /* AdviseOnEmitNode */; + // If needed, we should emit a variable declaration for the module. If we emit + // a leading variable declaration, we should not emit leading comments for the + // module body. + var varAdded = addVarForEnumOrModuleDeclaration(statements, node); + if (varAdded) { + // We should still emit the comments if we are emitting a system module. + if (moduleKind !== ts.ModuleKind.System || currentLexicalScope !== currentSourceFile) { + emitFlags |= 512 /* NoLeadingComments */; + } + } + // `parameterName` is the declaration name used inside of the namespace. + var parameterName = getNamespaceParameterName(node); + // `containerName` is the expression used inside of the namespace for exports. + var containerName = getNamespaceContainerName(node); + // `exportName` is the expression used within this node's container for any exported references. + var exportName = ts.hasModifier(node, 1 /* Export */) + ? ts.getExternalModuleOrNamespaceExportName(currentNamespaceContainerName, node, /*allowComments*/ false, /*allowSourceMaps*/ true) + : ts.getLocalName(node, /*allowComments*/ false, /*allowSourceMaps*/ true); + // x || (x = {}) + // exports.x || (exports.x = {}) + var moduleArg = ts.createLogicalOr(exportName, ts.createAssignment(exportName, ts.createObjectLiteral())); + if (hasNamespaceQualifiedExportName(node)) { + // `localName` is the expression used within this node's containing scope for any local references. + var localName = ts.getLocalName(node, /*allowComments*/ false, /*allowSourceMaps*/ true); + // x = (exports.x || (exports.x = {})) + moduleArg = ts.createAssignment(localName, moduleArg); + } + // (function (x_1) { + // x_1.y = ...; + // })(x || (x = {})); + var moduleStatement = ts.createExpressionStatement(ts.createCall(ts.createFunctionExpression( + /*modifiers*/ undefined, + /*asteriskToken*/ undefined, + /*name*/ undefined, + /*typeParameters*/ undefined, [ts.createParameter(/*decorators*/ undefined, /*modifiers*/ undefined, /*dotDotDotToken*/ undefined, parameterName)], + /*type*/ undefined, transformModuleBody(node, containerName)), + /*typeArguments*/ undefined, [moduleArg])); + ts.setOriginalNode(moduleStatement, node); + if (varAdded) { + // If a variable was added, synthetic comments are emitted on it, not on the moduleStatement. + ts.setSyntheticLeadingComments(moduleStatement, undefined); + ts.setSyntheticTrailingComments(moduleStatement, undefined); + } + ts.setTextRange(moduleStatement, node); + ts.addEmitFlags(moduleStatement, emitFlags); + statements.push(moduleStatement); + // Add a DeclarationMarker for the namespace to preserve trailing comments and mark + // the end of the declaration. + statements.push(ts.createEndOfDeclarationMarker(node)); + return statements; + } + /** + * Transforms the body of a module declaration. + * + * @param node The module declaration node. + */ + function transformModuleBody(node, namespaceLocalName) { + var savedCurrentNamespaceContainerName = currentNamespaceContainerName; + var savedCurrentNamespace = currentNamespace; + var savedCurrentScopeFirstDeclarationsOfName = currentScopeFirstDeclarationsOfName; + currentNamespaceContainerName = namespaceLocalName; + currentNamespace = node; + currentScopeFirstDeclarationsOfName = undefined; + var statements = []; + startLexicalEnvironment(); + var statementsLocation; + var blockLocation; + if (node.body) { + if (node.body.kind === 250 /* ModuleBlock */) { + saveStateAndInvoke(node.body, function (body) { return ts.addRange(statements, ts.visitNodes(body.statements, namespaceElementVisitor, ts.isStatement)); }); + statementsLocation = node.body.statements; + blockLocation = node.body; + } + else { + var result = visitModuleDeclaration(node.body); + if (result) { + if (ts.isArray(result)) { + ts.addRange(statements, result); + } + else { + statements.push(result); + } + } + var moduleBlock = getInnerMostModuleDeclarationFromDottedModule(node).body; + statementsLocation = ts.moveRangePos(moduleBlock.statements, -1); + } + } + ts.insertStatementsAfterStandardPrologue(statements, endLexicalEnvironment()); + currentNamespaceContainerName = savedCurrentNamespaceContainerName; + currentNamespace = savedCurrentNamespace; + currentScopeFirstDeclarationsOfName = savedCurrentScopeFirstDeclarationsOfName; + var block = ts.createBlock(ts.setTextRange(ts.createNodeArray(statements), + /*location*/ statementsLocation), + /*multiLine*/ true); + ts.setTextRange(block, blockLocation); + // namespace hello.hi.world { + // function foo() {} + // + // // TODO, blah + // } + // + // should be emitted as + // + // var hello; + // (function (hello) { + // var hi; + // (function (hi) { + // var world; + // (function (world) { + // function foo() { } + // // TODO, blah + // })(world = hi.world || (hi.world = {})); + // })(hi = hello.hi || (hello.hi = {})); + // })(hello || (hello = {})); + // We only want to emit comment on the namespace which contains block body itself, not the containing namespaces. + if (!node.body || node.body.kind !== 250 /* ModuleBlock */) { + ts.setEmitFlags(block, ts.getEmitFlags(block) | 1536 /* NoComments */); + } + return block; + } + function getInnerMostModuleDeclarationFromDottedModule(moduleDeclaration) { + if (moduleDeclaration.body.kind === 249 /* ModuleDeclaration */) { + var recursiveInnerModule = getInnerMostModuleDeclarationFromDottedModule(moduleDeclaration.body); + return recursiveInnerModule || moduleDeclaration.body; + } + } + /** + * Visits an import declaration, eliding it if it is not referenced and `importsNotUsedAsValues` is not 'preserve'. + * + * @param node The import declaration node. + */ + function visitImportDeclaration(node) { + if (!node.importClause) { + // Do not elide a side-effect only import declaration. + // import "foo"; + return node; + } + if (node.importClause.isTypeOnly) { + // Always elide type-only imports + return undefined; + } + // Elide the declaration if the import clause was elided. + var importClause = ts.visitNode(node.importClause, visitImportClause, ts.isImportClause); + return importClause || + compilerOptions.importsNotUsedAsValues === 1 /* Preserve */ || + compilerOptions.importsNotUsedAsValues === 2 /* Error */ + ? ts.updateImportDeclaration(node, + /*decorators*/ undefined, + /*modifiers*/ undefined, importClause, node.moduleSpecifier) + : undefined; + } + /** + * Visits an import clause, eliding it if it is not referenced. + * + * @param node The import clause node. + */ + function visitImportClause(node) { + if (node.isTypeOnly) { + return undefined; + } + // Elide the import clause if we elide both its name and its named bindings. + var name = resolver.isReferencedAliasDeclaration(node) ? node.name : undefined; + var namedBindings = ts.visitNode(node.namedBindings, visitNamedImportBindings, ts.isNamedImportBindings); + return (name || namedBindings) ? ts.updateImportClause(node, name, namedBindings, /*isTypeOnly*/ false) : undefined; + } + /** + * Visits named import bindings, eliding it if it is not referenced. + * + * @param node The named import bindings node. + */ + function visitNamedImportBindings(node) { + if (node.kind === 256 /* NamespaceImport */) { + // Elide a namespace import if it is not referenced. + return resolver.isReferencedAliasDeclaration(node) ? node : undefined; + } + else { + // Elide named imports if all of its import specifiers are elided. + var elements = ts.visitNodes(node.elements, visitImportSpecifier, ts.isImportSpecifier); + return ts.some(elements) ? ts.updateNamedImports(node, elements) : undefined; + } + } + /** + * Visits an import specifier, eliding it if it is not referenced. + * + * @param node The import specifier node. + */ + function visitImportSpecifier(node) { + // Elide an import specifier if it is not referenced. + return resolver.isReferencedAliasDeclaration(node) ? node : undefined; + } + /** + * Visits an export assignment, eliding it if it does not contain a clause that resolves + * to a value. + * + * @param node The export assignment node. + */ + function visitExportAssignment(node) { + // Elide the export assignment if it does not reference a value. + return resolver.isValueAliasDeclaration(node) + ? ts.visitEachChild(node, visitor, context) + : undefined; + } + /** + * Visits an export declaration, eliding it if it does not contain a clause that resolves + * to a value. + * + * @param node The export declaration node. + */ + function visitExportDeclaration(node) { + if (node.isTypeOnly) { + return undefined; + } + if (!node.exportClause || ts.isNamespaceExport(node.exportClause)) { + // never elide `export from ` declarations - + // they should be kept for sideffects/untyped exports, even when the + // type checker doesn't know about any exports + return node; + } + if (!resolver.isValueAliasDeclaration(node)) { + // Elide the export declaration if it does not export a value. + return undefined; + } + // Elide the export declaration if all of its named exports are elided. + var exportClause = ts.visitNode(node.exportClause, visitNamedExportBindings, ts.isNamedExportBindings); + return exportClause + ? ts.updateExportDeclaration(node, + /*decorators*/ undefined, + /*modifiers*/ undefined, exportClause, node.moduleSpecifier, node.isTypeOnly) + : undefined; + } + /** + * Visits named exports, eliding it if it does not contain an export specifier that + * resolves to a value. + * + * @param node The named exports node. + */ + function visitNamedExports(node) { + // Elide the named exports if all of its export specifiers were elided. + var elements = ts.visitNodes(node.elements, visitExportSpecifier, ts.isExportSpecifier); + return ts.some(elements) ? ts.updateNamedExports(node, elements) : undefined; + } + function visitNamespaceExports(node) { + return ts.updateNamespaceExport(node, ts.visitNode(node.name, visitor, ts.isIdentifier)); + } + function visitNamedExportBindings(node) { + return ts.isNamespaceExport(node) ? visitNamespaceExports(node) : visitNamedExports(node); + } + /** + * Visits an export specifier, eliding it if it does not resolve to a value. + * + * @param node The export specifier node. + */ + function visitExportSpecifier(node) { + // Elide an export specifier if it does not reference a value. + return resolver.isValueAliasDeclaration(node) ? node : undefined; + } + /** + * Determines whether to emit an import equals declaration. + * + * @param node The import equals declaration node. + */ + function shouldEmitImportEqualsDeclaration(node) { + // preserve old compiler's behavior: emit 'var' for import declaration (even if we do not consider them referenced) when + // - current file is not external module + // - import declaration is top level and target is value imported by entity name + return resolver.isReferencedAliasDeclaration(node) + || (!ts.isExternalModule(currentSourceFile) + && resolver.isTopLevelValueImportEqualsWithEntityName(node)); + } + /** + * Visits an import equals declaration. + * + * @param node The import equals declaration node. + */ + function visitImportEqualsDeclaration(node) { + if (ts.isExternalModuleImportEqualsDeclaration(node)) { + var isReferenced = resolver.isReferencedAliasDeclaration(node); + // If the alias is unreferenced but we want to keep the import, replace with 'import "mod"'. + if (!isReferenced && compilerOptions.importsNotUsedAsValues === 1 /* Preserve */) { + return ts.setOriginalNode(ts.setTextRange(ts.createImportDeclaration( + /*decorators*/ undefined, + /*modifiers*/ undefined, + /*importClause*/ undefined, node.moduleReference.expression), node), node); + } + return isReferenced ? ts.visitEachChild(node, visitor, context) : undefined; + } + if (!shouldEmitImportEqualsDeclaration(node)) { + return undefined; + } + var moduleReference = ts.createExpressionFromEntityName(node.moduleReference); + ts.setEmitFlags(moduleReference, 1536 /* NoComments */ | 2048 /* NoNestedComments */); + if (isNamedExternalModuleExport(node) || !isExportOfNamespace(node)) { + // export var ${name} = ${moduleReference}; + // var ${name} = ${moduleReference}; + return ts.setOriginalNode(ts.setTextRange(ts.createVariableStatement(ts.visitNodes(node.modifiers, modifierVisitor, ts.isModifier), ts.createVariableDeclarationList([ + ts.setOriginalNode(ts.createVariableDeclaration(node.name, + /*type*/ undefined, moduleReference), node) + ])), node), node); + } + else { + // exports.${name} = ${moduleReference}; + return ts.setOriginalNode(createNamespaceExport(node.name, moduleReference, node), node); + } + } + /** + * Gets a value indicating whether the node is exported from a namespace. + * + * @param node The node to test. + */ + function isExportOfNamespace(node) { + return currentNamespace !== undefined && ts.hasModifier(node, 1 /* Export */); + } + /** + * Gets a value indicating whether the node is exported from an external module. + * + * @param node The node to test. + */ + function isExternalModuleExport(node) { + return currentNamespace === undefined && ts.hasModifier(node, 1 /* Export */); + } + /** + * Gets a value indicating whether the node is a named export from an external module. + * + * @param node The node to test. + */ + function isNamedExternalModuleExport(node) { + return isExternalModuleExport(node) + && !ts.hasModifier(node, 512 /* Default */); + } + /** + * Gets a value indicating whether the node is the default export of an external module. + * + * @param node The node to test. + */ + function isDefaultExternalModuleExport(node) { + return isExternalModuleExport(node) + && ts.hasModifier(node, 512 /* Default */); + } + /** + * Creates a statement for the provided expression. This is used in calls to `map`. + */ + function expressionToStatement(expression) { + return ts.createExpressionStatement(expression); + } + function addExportMemberAssignment(statements, node) { + var expression = ts.createAssignment(ts.getExternalModuleOrNamespaceExportName(currentNamespaceContainerName, node, /*allowComments*/ false, /*allowSourceMaps*/ true), ts.getLocalName(node)); + ts.setSourceMapRange(expression, ts.createRange(node.name ? node.name.pos : node.pos, node.end)); + var statement = ts.createExpressionStatement(expression); + ts.setSourceMapRange(statement, ts.createRange(-1, node.end)); + statements.push(statement); + } + function createNamespaceExport(exportName, exportValue, location) { + return ts.setTextRange(ts.createExpressionStatement(ts.createAssignment(ts.getNamespaceMemberName(currentNamespaceContainerName, exportName, /*allowComments*/ false, /*allowSourceMaps*/ true), exportValue)), location); + } + function createNamespaceExportExpression(exportName, exportValue, location) { + return ts.setTextRange(ts.createAssignment(getNamespaceMemberNameWithSourceMapsAndWithoutComments(exportName), exportValue), location); + } + function getNamespaceMemberNameWithSourceMapsAndWithoutComments(name) { + return ts.getNamespaceMemberName(currentNamespaceContainerName, name, /*allowComments*/ false, /*allowSourceMaps*/ true); + } + /** + * Gets the declaration name used inside of a namespace or enum. + */ + function getNamespaceParameterName(node) { + var name = ts.getGeneratedNameForNode(node); + ts.setSourceMapRange(name, node.name); + return name; + } + /** + * Gets the expression used to refer to a namespace or enum within the body + * of its declaration. + */ + function getNamespaceContainerName(node) { + return ts.getGeneratedNameForNode(node); + } + /** + * Gets a local alias for a class declaration if it is a decorated class with an internal + * reference to the static side of the class. This is necessary to avoid issues with + * double-binding semantics for the class name. + */ + function getClassAliasIfNeeded(node) { + if (resolver.getNodeCheckFlags(node) & 16777216 /* ClassWithConstructorReference */) { + enableSubstitutionForClassAliases(); + var classAlias = ts.createUniqueName(node.name && !ts.isGeneratedIdentifier(node.name) ? ts.idText(node.name) : "default"); + classAliases[ts.getOriginalNodeId(node)] = classAlias; + hoistVariableDeclaration(classAlias); + return classAlias; + } + } + function getClassPrototype(node) { + return ts.createPropertyAccess(ts.getDeclarationName(node), "prototype"); + } + function getClassMemberPrefix(node, member) { + return ts.hasModifier(member, 32 /* Static */) + ? ts.getDeclarationName(node) + : getClassPrototype(node); + } + function enableSubstitutionForNonQualifiedEnumMembers() { + if ((enabledSubstitutions & 8 /* NonQualifiedEnumMembers */) === 0) { + enabledSubstitutions |= 8 /* NonQualifiedEnumMembers */; + context.enableSubstitution(75 /* Identifier */); + } + } + function enableSubstitutionForClassAliases() { + if ((enabledSubstitutions & 1 /* ClassAliases */) === 0) { + enabledSubstitutions |= 1 /* ClassAliases */; + // We need to enable substitutions for identifiers. This allows us to + // substitute class names inside of a class declaration. + context.enableSubstitution(75 /* Identifier */); + // Keep track of class aliases. + classAliases = []; + } + } + function enableSubstitutionForNamespaceExports() { + if ((enabledSubstitutions & 2 /* NamespaceExports */) === 0) { + enabledSubstitutions |= 2 /* NamespaceExports */; + // We need to enable substitutions for identifiers and shorthand property assignments. This allows us to + // substitute the names of exported members of a namespace. + context.enableSubstitution(75 /* Identifier */); + context.enableSubstitution(282 /* ShorthandPropertyAssignment */); + // We need to be notified when entering and exiting namespaces. + context.enableEmitNotification(249 /* ModuleDeclaration */); + } + } + function isTransformedModuleDeclaration(node) { + return ts.getOriginalNode(node).kind === 249 /* ModuleDeclaration */; + } + function isTransformedEnumDeclaration(node) { + return ts.getOriginalNode(node).kind === 248 /* EnumDeclaration */; + } + /** + * Hook for node emit. + * + * @param hint A hint as to the intended usage of the node. + * @param node The node to emit. + * @param emit A callback used to emit the node in the printer. + */ + function onEmitNode(hint, node, emitCallback) { + var savedApplicableSubstitutions = applicableSubstitutions; + var savedCurrentSourceFile = currentSourceFile; + if (ts.isSourceFile(node)) { + currentSourceFile = node; + } + if (enabledSubstitutions & 2 /* NamespaceExports */ && isTransformedModuleDeclaration(node)) { + applicableSubstitutions |= 2 /* NamespaceExports */; + } + if (enabledSubstitutions & 8 /* NonQualifiedEnumMembers */ && isTransformedEnumDeclaration(node)) { + applicableSubstitutions |= 8 /* NonQualifiedEnumMembers */; + } + previousOnEmitNode(hint, node, emitCallback); + applicableSubstitutions = savedApplicableSubstitutions; + currentSourceFile = savedCurrentSourceFile; + } + /** + * Hooks node substitutions. + * + * @param hint A hint as to the intended usage of the node. + * @param node The node to substitute. + */ + function onSubstituteNode(hint, node) { + node = previousOnSubstituteNode(hint, node); + if (hint === 1 /* Expression */) { + return substituteExpression(node); + } + else if (ts.isShorthandPropertyAssignment(node)) { + return substituteShorthandPropertyAssignment(node); + } + return node; + } + function substituteShorthandPropertyAssignment(node) { + if (enabledSubstitutions & 2 /* NamespaceExports */) { + var name = node.name; + var exportedName = trySubstituteNamespaceExportedName(name); + if (exportedName) { + // A shorthand property with an assignment initializer is probably part of a + // destructuring assignment + if (node.objectAssignmentInitializer) { + var initializer = ts.createAssignment(exportedName, node.objectAssignmentInitializer); + return ts.setTextRange(ts.createPropertyAssignment(name, initializer), node); + } + return ts.setTextRange(ts.createPropertyAssignment(name, exportedName), node); + } + } + return node; + } + function substituteExpression(node) { + switch (node.kind) { + case 75 /* Identifier */: + return substituteExpressionIdentifier(node); + case 194 /* PropertyAccessExpression */: + return substitutePropertyAccessExpression(node); + case 195 /* ElementAccessExpression */: + return substituteElementAccessExpression(node); + } + return node; + } + function substituteExpressionIdentifier(node) { + return trySubstituteClassAlias(node) + || trySubstituteNamespaceExportedName(node) + || node; + } + function trySubstituteClassAlias(node) { + if (enabledSubstitutions & 1 /* ClassAliases */) { + if (resolver.getNodeCheckFlags(node) & 33554432 /* ConstructorReferenceInClass */) { + // Due to the emit for class decorators, any reference to the class from inside of the class body + // must instead be rewritten to point to a temporary variable to avoid issues with the double-bind + // behavior of class names in ES6. + // Also, when emitting statics for class expressions, we must substitute a class alias for + // constructor references in static property initializers. + var declaration = resolver.getReferencedValueDeclaration(node); + if (declaration) { + var classAlias = classAliases[declaration.id]; // TODO: GH#18217 + if (classAlias) { + var clone_1 = ts.getSynthesizedClone(classAlias); + ts.setSourceMapRange(clone_1, node); + ts.setCommentRange(clone_1, node); + return clone_1; + } + } + } + } + return undefined; + } + function trySubstituteNamespaceExportedName(node) { + // If this is explicitly a local name, do not substitute. + if (enabledSubstitutions & applicableSubstitutions && !ts.isGeneratedIdentifier(node) && !ts.isLocalName(node)) { + // If we are nested within a namespace declaration, we may need to qualifiy + // an identifier that is exported from a merged namespace. + var container = resolver.getReferencedExportContainer(node, /*prefixLocals*/ false); + if (container && container.kind !== 290 /* SourceFile */) { + var substitute = (applicableSubstitutions & 2 /* NamespaceExports */ && container.kind === 249 /* ModuleDeclaration */) || + (applicableSubstitutions & 8 /* NonQualifiedEnumMembers */ && container.kind === 248 /* EnumDeclaration */); + if (substitute) { + return ts.setTextRange(ts.createPropertyAccess(ts.getGeneratedNameForNode(container), node), + /*location*/ node); + } + } + } + return undefined; + } + function substitutePropertyAccessExpression(node) { + return substituteConstantValue(node); + } + function substituteElementAccessExpression(node) { + return substituteConstantValue(node); + } + function substituteConstantValue(node) { + var constantValue = tryGetConstEnumValue(node); + if (constantValue !== undefined) { + // track the constant value on the node for the printer in needsDotDotForPropertyAccess + ts.setConstantValue(node, constantValue); + var substitute = ts.createLiteral(constantValue); + if (!compilerOptions.removeComments) { + var originalNode = ts.getOriginalNode(node, ts.isAccessExpression); + var propertyName = ts.isPropertyAccessExpression(originalNode) + ? ts.declarationNameToString(originalNode.name) + : ts.getTextOfNode(originalNode.argumentExpression); + ts.addSyntheticTrailingComment(substitute, 3 /* MultiLineCommentTrivia */, " " + propertyName + " "); + } + return substitute; + } + return node; + } + function tryGetConstEnumValue(node) { + if (compilerOptions.isolatedModules) { + return undefined; + } + return ts.isPropertyAccessExpression(node) || ts.isElementAccessExpression(node) ? resolver.getConstantValue(node) : undefined; + } + } + ts.transformTypeScript = transformTypeScript; + function createDecorateHelper(context, decoratorExpressions, target, memberName, descriptor, location) { + var argumentsArray = []; + argumentsArray.push(ts.createArrayLiteral(decoratorExpressions, /*multiLine*/ true)); + argumentsArray.push(target); + if (memberName) { + argumentsArray.push(memberName); + if (descriptor) { + argumentsArray.push(descriptor); + } + } + context.requestEmitHelper(ts.decorateHelper); + return ts.setTextRange(ts.createCall(ts.getUnscopedHelperName("__decorate"), + /*typeArguments*/ undefined, argumentsArray), location); + } + ts.decorateHelper = { + name: "typescript:decorate", + importName: "__decorate", + scoped: false, + priority: 2, + text: "\n var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {\n var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;\n if (typeof Reflect === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);\n else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\n return c > 3 && r && Object.defineProperty(target, key, r), r;\n };" + }; + function createMetadataHelper(context, metadataKey, metadataValue) { + context.requestEmitHelper(ts.metadataHelper); + return ts.createCall(ts.getUnscopedHelperName("__metadata"), + /*typeArguments*/ undefined, [ + ts.createLiteral(metadataKey), + metadataValue + ]); + } + ts.metadataHelper = { + name: "typescript:metadata", + importName: "__metadata", + scoped: false, + priority: 3, + text: "\n var __metadata = (this && this.__metadata) || function (k, v) {\n if (typeof Reflect === \"object\" && typeof Reflect.metadata === \"function\") return Reflect.metadata(k, v);\n };" + }; + function createParamHelper(context, expression, parameterOffset, location) { + context.requestEmitHelper(ts.paramHelper); + return ts.setTextRange(ts.createCall(ts.getUnscopedHelperName("__param"), + /*typeArguments*/ undefined, [ + ts.createLiteral(parameterOffset), + expression + ]), location); + } + ts.paramHelper = { + name: "typescript:param", + importName: "__param", + scoped: false, + priority: 4, + text: "\n var __param = (this && this.__param) || function (paramIndex, decorator) {\n return function (target, key) { decorator(target, key, paramIndex); }\n };" + }; +})(ts || (ts = {})); +/*@internal*/ +var ts; +(function (ts) { + var ClassPropertySubstitutionFlags; + (function (ClassPropertySubstitutionFlags) { + /** + * Enables substitutions for class expressions with static fields + * which have initializers that reference the class name. + */ + ClassPropertySubstitutionFlags[ClassPropertySubstitutionFlags["ClassAliases"] = 1] = "ClassAliases"; + })(ClassPropertySubstitutionFlags || (ClassPropertySubstitutionFlags = {})); + var PrivateIdentifierPlacement; + (function (PrivateIdentifierPlacement) { + PrivateIdentifierPlacement[PrivateIdentifierPlacement["InstanceField"] = 0] = "InstanceField"; + })(PrivateIdentifierPlacement || (PrivateIdentifierPlacement = {})); + /** + * Transforms ECMAScript Class Syntax. + * TypeScript parameter property syntax is transformed in the TypeScript transformer. + * For now, this transforms public field declarations using TypeScript class semantics, + * where declarations are elided and initializers are transformed as assignments in the constructor. + * When --useDefineForClassFields is on, this transforms to ECMAScript semantics, with Object.defineProperty. + */ + function transformClassFields(context) { + var hoistVariableDeclaration = context.hoistVariableDeclaration, endLexicalEnvironment = context.endLexicalEnvironment, resumeLexicalEnvironment = context.resumeLexicalEnvironment; + var resolver = context.getEmitResolver(); + var compilerOptions = context.getCompilerOptions(); + var languageVersion = ts.getEmitScriptTarget(compilerOptions); + var shouldTransformPrivateFields = languageVersion < 99 /* ESNext */; + var previousOnSubstituteNode = context.onSubstituteNode; + context.onSubstituteNode = onSubstituteNode; + var enabledSubstitutions; + var classAliases; + /** + * Tracks what computed name expressions originating from elided names must be inlined + * at the next execution site, in document order + */ + var pendingExpressions; + /** + * Tracks what computed name expression statements and static property initializers must be + * emitted at the next execution site, in document order (for decorated classes). + */ + var pendingStatements; + var privateIdentifierEnvironmentStack = []; + var currentPrivateIdentifierEnvironment; + return ts.chainBundle(transformSourceFile); + function transformSourceFile(node) { + var options = context.getCompilerOptions(); + if (node.isDeclarationFile + || options.useDefineForClassFields && options.target === 99 /* ESNext */) { + return node; + } + var visited = ts.visitEachChild(node, visitor, context); + ts.addEmitHelpers(visited, context.readEmitHelpers()); + return visited; + } + function visitor(node) { + if (!(node.transformFlags & 4194304 /* ContainsClassFields */)) + return node; + switch (node.kind) { + case 214 /* ClassExpression */: + case 245 /* ClassDeclaration */: + return visitClassLike(node); + case 159 /* PropertyDeclaration */: + return visitPropertyDeclaration(node); + case 225 /* VariableStatement */: + return visitVariableStatement(node); + case 154 /* ComputedPropertyName */: + return visitComputedPropertyName(node); + case 194 /* PropertyAccessExpression */: + return visitPropertyAccessExpression(node); + case 207 /* PrefixUnaryExpression */: + return visitPrefixUnaryExpression(node); + case 208 /* PostfixUnaryExpression */: + return visitPostfixUnaryExpression(node, /*valueIsDiscarded*/ false); + case 196 /* CallExpression */: + return visitCallExpression(node); + case 209 /* BinaryExpression */: + return visitBinaryExpression(node); + case 76 /* PrivateIdentifier */: + return visitPrivateIdentifier(node); + case 226 /* ExpressionStatement */: + return visitExpressionStatement(node); + case 230 /* ForStatement */: + return visitForStatement(node); + case 198 /* TaggedTemplateExpression */: + return visitTaggedTemplateExpression(node); + } + return ts.visitEachChild(node, visitor, context); + } + function visitorDestructuringTarget(node) { + switch (node.kind) { + case 193 /* ObjectLiteralExpression */: + case 192 /* ArrayLiteralExpression */: + return visitAssignmentPattern(node); + default: + return visitor(node); + } + } + /** + * If we visit a private name, this means it is an undeclared private name. + * Replace it with an empty identifier to indicate a problem with the code. + */ + function visitPrivateIdentifier(node) { + if (!shouldTransformPrivateFields) { + return node; + } + return ts.setOriginalNode(ts.createIdentifier(""), node); + } + /** + * Visits the members of a class that has fields. + * + * @param node The node to visit. + */ + function classElementVisitor(node) { + switch (node.kind) { + case 162 /* Constructor */: + // Constructors for classes using class fields are transformed in + // `visitClassDeclaration` or `visitClassExpression`. + return undefined; + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + case 161 /* MethodDeclaration */: + // Visit the name of the member (if it's a computed property name). + return ts.visitEachChild(node, classElementVisitor, context); + case 159 /* PropertyDeclaration */: + return visitPropertyDeclaration(node); + case 154 /* ComputedPropertyName */: + return visitComputedPropertyName(node); + case 222 /* SemicolonClassElement */: + return node; + default: + return visitor(node); + } + } + function visitVariableStatement(node) { + var savedPendingStatements = pendingStatements; + pendingStatements = []; + var visitedNode = ts.visitEachChild(node, visitor, context); + var statement = ts.some(pendingStatements) ? __spreadArrays([visitedNode], pendingStatements) : + visitedNode; + pendingStatements = savedPendingStatements; + return statement; + } + function visitComputedPropertyName(name) { + var node = ts.visitEachChild(name, visitor, context); + if (ts.some(pendingExpressions)) { + var expressions = pendingExpressions; + expressions.push(name.expression); + pendingExpressions = []; + node = ts.updateComputedPropertyName(node, ts.inlineExpressions(expressions)); + } + return node; + } + function visitPropertyDeclaration(node) { + ts.Debug.assert(!ts.some(node.decorators)); + if (!shouldTransformPrivateFields && ts.isPrivateIdentifier(node.name)) { + // Initializer is elided as the field is initialized in transformConstructor. + return ts.updateProperty(node, + /*decorators*/ undefined, ts.visitNodes(node.modifiers, visitor, ts.isModifier), node.name, + /*questionOrExclamationToken*/ undefined, + /*type*/ undefined, + /*initializer*/ undefined); + } + // Create a temporary variable to store a computed property name (if necessary). + // If it's not inlineable, then we emit an expression after the class which assigns + // the property name to the temporary variable. + var expr = getPropertyNameExpressionIfNeeded(node.name, !!node.initializer || !!context.getCompilerOptions().useDefineForClassFields); + if (expr && !ts.isSimpleInlineableExpression(expr)) { + (pendingExpressions || (pendingExpressions = [])).push(expr); + } + return undefined; + } + function createPrivateIdentifierAccess(info, receiver) { + receiver = ts.visitNode(receiver, visitor, ts.isExpression); + switch (info.placement) { + case 0 /* InstanceField */: + return createClassPrivateFieldGetHelper(context, ts.nodeIsSynthesized(receiver) ? receiver : ts.getSynthesizedClone(receiver), info.weakMapName); + default: return ts.Debug.fail("Unexpected private identifier placement"); + } + } + function visitPropertyAccessExpression(node) { + if (shouldTransformPrivateFields && ts.isPrivateIdentifier(node.name)) { + var privateIdentifierInfo = accessPrivateIdentifier(node.name); + if (privateIdentifierInfo) { + return ts.setOriginalNode(createPrivateIdentifierAccess(privateIdentifierInfo, node.expression), node); + } + } + return ts.visitEachChild(node, visitor, context); + } + function visitPrefixUnaryExpression(node) { + if (shouldTransformPrivateFields && ts.isPrivateIdentifierPropertyAccessExpression(node.operand)) { + var operator = node.operator === 45 /* PlusPlusToken */ ? + 39 /* PlusToken */ : node.operator === 46 /* MinusMinusToken */ ? + 40 /* MinusToken */ : undefined; + var info = void 0; + if (operator && (info = accessPrivateIdentifier(node.operand.name))) { + var receiver = ts.visitNode(node.operand.expression, visitor, ts.isExpression); + var _a = createCopiableReceiverExpr(receiver), readExpression = _a.readExpression, initializeExpression = _a.initializeExpression; + var existingValue = ts.createPrefix(39 /* PlusToken */, createPrivateIdentifierAccess(info, readExpression)); + return ts.setOriginalNode(createPrivateIdentifierAssignment(info, initializeExpression || readExpression, ts.createBinary(existingValue, operator, ts.createLiteral(1)), 62 /* EqualsToken */), node); + } + } + return ts.visitEachChild(node, visitor, context); + } + function visitPostfixUnaryExpression(node, valueIsDiscarded) { + if (shouldTransformPrivateFields && ts.isPrivateIdentifierPropertyAccessExpression(node.operand)) { + var operator = node.operator === 45 /* PlusPlusToken */ ? + 39 /* PlusToken */ : node.operator === 46 /* MinusMinusToken */ ? + 40 /* MinusToken */ : undefined; + var info = void 0; + if (operator && (info = accessPrivateIdentifier(node.operand.name))) { + var receiver = ts.visitNode(node.operand.expression, visitor, ts.isExpression); + var _a = createCopiableReceiverExpr(receiver), readExpression = _a.readExpression, initializeExpression = _a.initializeExpression; + var existingValue = ts.createPrefix(39 /* PlusToken */, createPrivateIdentifierAccess(info, readExpression)); + // Create a temporary variable to store the value returned by the expression. + var returnValue = valueIsDiscarded ? undefined : ts.createTempVariable(hoistVariableDeclaration); + return ts.setOriginalNode(ts.inlineExpressions(ts.compact([ + createPrivateIdentifierAssignment(info, initializeExpression || readExpression, ts.createBinary(returnValue ? ts.createAssignment(returnValue, existingValue) : existingValue, operator, ts.createLiteral(1)), 62 /* EqualsToken */), + returnValue + ])), node); + } + } + return ts.visitEachChild(node, visitor, context); + } + function visitForStatement(node) { + if (node.incrementor && ts.isPostfixUnaryExpression(node.incrementor)) { + return ts.updateFor(node, ts.visitNode(node.initializer, visitor, ts.isForInitializer), ts.visitNode(node.condition, visitor, ts.isExpression), visitPostfixUnaryExpression(node.incrementor, /*valueIsDiscarded*/ true), ts.visitNode(node.statement, visitor, ts.isStatement)); + } + return ts.visitEachChild(node, visitor, context); + } + function visitExpressionStatement(node) { + if (ts.isPostfixUnaryExpression(node.expression)) { + return ts.updateExpressionStatement(node, visitPostfixUnaryExpression(node.expression, /*valueIsDiscarded*/ true)); + } + return ts.visitEachChild(node, visitor, context); + } + function createCopiableReceiverExpr(receiver) { + var clone = ts.nodeIsSynthesized(receiver) ? receiver : ts.getSynthesizedClone(receiver); + if (ts.isSimpleInlineableExpression(receiver)) { + return { readExpression: clone, initializeExpression: undefined }; + } + var readExpression = ts.createTempVariable(hoistVariableDeclaration); + var initializeExpression = ts.createAssignment(readExpression, clone); + return { readExpression: readExpression, initializeExpression: initializeExpression }; + } + function visitCallExpression(node) { + if (shouldTransformPrivateFields && ts.isPrivateIdentifierPropertyAccessExpression(node.expression)) { + // Transform call expressions of private names to properly bind the `this` parameter. + var _a = ts.createCallBinding(node.expression, hoistVariableDeclaration, languageVersion), thisArg = _a.thisArg, target = _a.target; + return ts.updateCall(node, ts.createPropertyAccess(ts.visitNode(target, visitor), "call"), + /*typeArguments*/ undefined, __spreadArrays([ts.visitNode(thisArg, visitor, ts.isExpression)], ts.visitNodes(node.arguments, visitor, ts.isExpression))); + } + return ts.visitEachChild(node, visitor, context); + } + function visitTaggedTemplateExpression(node) { + if (shouldTransformPrivateFields && ts.isPrivateIdentifierPropertyAccessExpression(node.tag)) { + // Bind the `this` correctly for tagged template literals when the tag is a private identifier property access. + var _a = ts.createCallBinding(node.tag, hoistVariableDeclaration, languageVersion), thisArg = _a.thisArg, target = _a.target; + return ts.updateTaggedTemplate(node, ts.createCall(ts.createPropertyAccess(ts.visitNode(target, visitor), "bind"), + /*typeArguments*/ undefined, [ts.visitNode(thisArg, visitor, ts.isExpression)]), ts.visitNode(node.template, visitor, ts.isTemplateLiteral)); + } + return ts.visitEachChild(node, visitor, context); + } + function visitBinaryExpression(node) { + if (shouldTransformPrivateFields) { + if (ts.isDestructuringAssignment(node)) { + var savedPendingExpressions = pendingExpressions; + pendingExpressions = undefined; + node = ts.updateBinary(node, ts.visitNode(node.left, visitorDestructuringTarget), ts.visitNode(node.right, visitor), node.operatorToken); + var expr = ts.some(pendingExpressions) ? + ts.inlineExpressions(ts.compact(__spreadArrays(pendingExpressions, [node]))) : + node; + pendingExpressions = savedPendingExpressions; + return expr; + } + if (ts.isAssignmentExpression(node) && ts.isPrivateIdentifierPropertyAccessExpression(node.left)) { + var info = accessPrivateIdentifier(node.left.name); + if (info) { + return ts.setOriginalNode(createPrivateIdentifierAssignment(info, node.left.expression, node.right, node.operatorToken.kind), node); + } + } + } + return ts.visitEachChild(node, visitor, context); + } + function createPrivateIdentifierAssignment(info, receiver, right, operator) { + switch (info.placement) { + case 0 /* InstanceField */: { + return createPrivateIdentifierInstanceFieldAssignment(info, receiver, right, operator); + } + default: return ts.Debug.fail("Unexpected private identifier placement"); + } + } + function createPrivateIdentifierInstanceFieldAssignment(info, receiver, right, operator) { + receiver = ts.visitNode(receiver, visitor, ts.isExpression); + right = ts.visitNode(right, visitor, ts.isExpression); + if (ts.isCompoundAssignment(operator)) { + var _a = createCopiableReceiverExpr(receiver), readExpression = _a.readExpression, initializeExpression = _a.initializeExpression; + return createClassPrivateFieldSetHelper(context, initializeExpression || readExpression, info.weakMapName, ts.createBinary(createClassPrivateFieldGetHelper(context, readExpression, info.weakMapName), ts.getNonAssignmentOperatorForCompoundAssignment(operator), right)); + } + else { + return createClassPrivateFieldSetHelper(context, receiver, info.weakMapName, right); + } + } + /** + * Set up the environment for a class. + */ + function visitClassLike(node) { + var savedPendingExpressions = pendingExpressions; + pendingExpressions = undefined; + if (shouldTransformPrivateFields) { + startPrivateIdentifierEnvironment(); + } + var result = ts.isClassDeclaration(node) ? + visitClassDeclaration(node) : + visitClassExpression(node); + if (shouldTransformPrivateFields) { + endPrivateIdentifierEnvironment(); + } + pendingExpressions = savedPendingExpressions; + return result; + } + function doesClassElementNeedTransform(node) { + return ts.isPropertyDeclaration(node) || (shouldTransformPrivateFields && node.name && ts.isPrivateIdentifier(node.name)); + } + function visitClassDeclaration(node) { + if (!ts.forEach(node.members, doesClassElementNeedTransform)) { + return ts.visitEachChild(node, visitor, context); + } + var extendsClauseElement = ts.getEffectiveBaseTypeNode(node); + var isDerivedClass = !!(extendsClauseElement && ts.skipOuterExpressions(extendsClauseElement.expression).kind !== 100 /* NullKeyword */); + var statements = [ + ts.updateClassDeclaration(node, + /*decorators*/ undefined, node.modifiers, node.name, + /*typeParameters*/ undefined, ts.visitNodes(node.heritageClauses, visitor, ts.isHeritageClause), transformClassMembers(node, isDerivedClass)) + ]; + // Write any pending expressions from elided or moved computed property names + if (ts.some(pendingExpressions)) { + statements.push(ts.createExpressionStatement(ts.inlineExpressions(pendingExpressions))); + } + // Emit static property assignment. Because classDeclaration is lexically evaluated, + // it is safe to emit static property assignment after classDeclaration + // From ES6 specification: + // HasLexicalDeclaration (N) : Determines if the argument identifier has a binding in this environment record that was created using + // a lexical declaration such as a LexicalDeclaration or a ClassDeclaration. + var staticProperties = ts.getProperties(node, /*requireInitializer*/ true, /*isStatic*/ true); + if (ts.some(staticProperties)) { + addPropertyStatements(statements, staticProperties, ts.getInternalName(node)); + } + return statements; + } + function visitClassExpression(node) { + if (!ts.forEach(node.members, doesClassElementNeedTransform)) { + return ts.visitEachChild(node, visitor, context); + } + // If this class expression is a transformation of a decorated class declaration, + // then we want to output the pendingExpressions as statements, not as inlined + // expressions with the class statement. + // + // In this case, we use pendingStatements to produce the same output as the + // class declaration transformation. The VariableStatement visitor will insert + // these statements after the class expression variable statement. + var isDecoratedClassDeclaration = ts.isClassDeclaration(ts.getOriginalNode(node)); + var staticProperties = ts.getProperties(node, /*requireInitializer*/ true, /*isStatic*/ true); + var extendsClauseElement = ts.getEffectiveBaseTypeNode(node); + var isDerivedClass = !!(extendsClauseElement && ts.skipOuterExpressions(extendsClauseElement.expression).kind !== 100 /* NullKeyword */); + var classExpression = ts.updateClassExpression(node, node.modifiers, node.name, + /*typeParameters*/ undefined, ts.visitNodes(node.heritageClauses, visitor, ts.isHeritageClause), transformClassMembers(node, isDerivedClass)); + if (ts.some(staticProperties) || ts.some(pendingExpressions)) { + if (isDecoratedClassDeclaration) { + ts.Debug.assertIsDefined(pendingStatements, "Decorated classes transformed by TypeScript are expected to be within a variable declaration."); + // Write any pending expressions from elided or moved computed property names + if (pendingStatements && pendingExpressions && ts.some(pendingExpressions)) { + pendingStatements.push(ts.createExpressionStatement(ts.inlineExpressions(pendingExpressions))); + } + if (pendingStatements && ts.some(staticProperties)) { + addPropertyStatements(pendingStatements, staticProperties, ts.getInternalName(node)); + } + return classExpression; + } + else { + var expressions = []; + var isClassWithConstructorReference = resolver.getNodeCheckFlags(node) & 16777216 /* ClassWithConstructorReference */; + var temp = ts.createTempVariable(hoistVariableDeclaration, !!isClassWithConstructorReference); + if (isClassWithConstructorReference) { + // record an alias as the class name is not in scope for statics. + enableSubstitutionForClassAliases(); + var alias = ts.getSynthesizedClone(temp); + alias.autoGenerateFlags &= ~8 /* ReservedInNestedScopes */; + classAliases[ts.getOriginalNodeId(node)] = alias; + } + // To preserve the behavior of the old emitter, we explicitly indent + // the body of a class with static initializers. + ts.setEmitFlags(classExpression, 65536 /* Indented */ | ts.getEmitFlags(classExpression)); + expressions.push(ts.startOnNewLine(ts.createAssignment(temp, classExpression))); + // Add any pending expressions leftover from elided or relocated computed property names + ts.addRange(expressions, ts.map(pendingExpressions, ts.startOnNewLine)); + ts.addRange(expressions, generateInitializedPropertyExpressions(staticProperties, temp)); + expressions.push(ts.startOnNewLine(temp)); + return ts.inlineExpressions(expressions); + } + } + return classExpression; + } + function transformClassMembers(node, isDerivedClass) { + if (shouldTransformPrivateFields) { + // Declare private names. + for (var _i = 0, _a = node.members; _i < _a.length; _i++) { + var member = _a[_i]; + if (ts.isPrivateIdentifierPropertyDeclaration(member)) { + addPrivateIdentifierToEnvironment(member.name); + } + } + } + var members = []; + var constructor = transformConstructor(node, isDerivedClass); + if (constructor) { + members.push(constructor); + } + ts.addRange(members, ts.visitNodes(node.members, classElementVisitor, ts.isClassElement)); + return ts.setTextRange(ts.createNodeArray(members), /*location*/ node.members); + } + function isPropertyDeclarationThatRequiresConstructorStatement(member) { + if (!ts.isPropertyDeclaration(member) || ts.hasStaticModifier(member)) { + return false; + } + if (context.getCompilerOptions().useDefineForClassFields) { + // If we are using define semantics and targeting ESNext or higher, + // then we don't need to transform any class properties. + return languageVersion < 99 /* ESNext */; + } + return ts.isInitializedProperty(member) || shouldTransformPrivateFields && ts.isPrivateIdentifierPropertyDeclaration(member); + } + function transformConstructor(node, isDerivedClass) { + var constructor = ts.visitNode(ts.getFirstConstructorWithBody(node), visitor, ts.isConstructorDeclaration); + var properties = node.members.filter(isPropertyDeclarationThatRequiresConstructorStatement); + if (!ts.some(properties)) { + return constructor; + } + var parameters = ts.visitParameterList(constructor ? constructor.parameters : undefined, visitor, context); + var body = transformConstructorBody(node, constructor, isDerivedClass); + if (!body) { + return undefined; + } + return ts.startOnNewLine(ts.setOriginalNode(ts.setTextRange(ts.createConstructor( + /*decorators*/ undefined, + /*modifiers*/ undefined, parameters !== null && parameters !== void 0 ? parameters : [], body), constructor || node), constructor)); + } + function transformConstructorBody(node, constructor, isDerivedClass) { + var useDefineForClassFields = context.getCompilerOptions().useDefineForClassFields; + var properties = ts.getProperties(node, /*requireInitializer*/ false, /*isStatic*/ false); + if (!useDefineForClassFields) { + properties = ts.filter(properties, function (property) { return !!property.initializer || ts.isPrivateIdentifier(property.name); }); + } + // Only generate synthetic constructor when there are property initializers to move. + if (!constructor && !ts.some(properties)) { + return ts.visitFunctionBody(/*node*/ undefined, visitor, context); + } + resumeLexicalEnvironment(); + var indexOfFirstStatement = 0; + var statements = []; + if (!constructor && isDerivedClass) { + // Add a synthetic `super` call: + // + // super(...arguments); + // + statements.push(ts.createExpressionStatement(ts.createCall(ts.createSuper(), + /*typeArguments*/ undefined, [ts.createSpread(ts.createIdentifier("arguments"))]))); + } + if (constructor) { + indexOfFirstStatement = ts.addPrologueDirectivesAndInitialSuperCall(constructor, statements, visitor); + } + // Add the property initializers. Transforms this: + // + // public x = 1; + // + // Into this: + // + // constructor() { + // this.x = 1; + // } + // + if (constructor === null || constructor === void 0 ? void 0 : constructor.body) { + var afterParameterProperties = ts.findIndex(constructor.body.statements, function (s) { return !ts.isParameterPropertyDeclaration(ts.getOriginalNode(s), constructor); }, indexOfFirstStatement); + if (afterParameterProperties === -1) { + afterParameterProperties = constructor.body.statements.length; + } + if (afterParameterProperties > indexOfFirstStatement) { + if (!useDefineForClassFields) { + ts.addRange(statements, ts.visitNodes(constructor.body.statements, visitor, ts.isStatement, indexOfFirstStatement, afterParameterProperties - indexOfFirstStatement)); + } + indexOfFirstStatement = afterParameterProperties; + } + } + addPropertyStatements(statements, properties, ts.createThis()); + // Add existing statements, skipping the initial super call. + if (constructor) { + ts.addRange(statements, ts.visitNodes(constructor.body.statements, visitor, ts.isStatement, indexOfFirstStatement)); + } + statements = ts.mergeLexicalEnvironment(statements, endLexicalEnvironment()); + return ts.setTextRange(ts.createBlock(ts.setTextRange(ts.createNodeArray(statements), + /*location*/ constructor ? constructor.body.statements : node.members), + /*multiLine*/ true), + /*location*/ constructor ? constructor.body : undefined); + } + /** + * Generates assignment statements for property initializers. + * + * @param properties An array of property declarations to transform. + * @param receiver The receiver on which each property should be assigned. + */ + function addPropertyStatements(statements, properties, receiver) { + for (var _i = 0, properties_8 = properties; _i < properties_8.length; _i++) { + var property = properties_8[_i]; + var expression = transformProperty(property, receiver); + if (!expression) { + continue; + } + var statement = ts.createExpressionStatement(expression); + ts.setSourceMapRange(statement, ts.moveRangePastModifiers(property)); + ts.setCommentRange(statement, property); + ts.setOriginalNode(statement, property); + statements.push(statement); + } + } + /** + * Generates assignment expressions for property initializers. + * + * @param properties An array of property declarations to transform. + * @param receiver The receiver on which each property should be assigned. + */ + function generateInitializedPropertyExpressions(properties, receiver) { + var expressions = []; + for (var _i = 0, properties_9 = properties; _i < properties_9.length; _i++) { + var property = properties_9[_i]; + var expression = transformProperty(property, receiver); + if (!expression) { + continue; + } + ts.startOnNewLine(expression); + ts.setSourceMapRange(expression, ts.moveRangePastModifiers(property)); + ts.setCommentRange(expression, property); + ts.setOriginalNode(expression, property); + expressions.push(expression); + } + return expressions; + } + /** + * Transforms a property initializer into an assignment statement. + * + * @param property The property declaration. + * @param receiver The object receiving the property assignment. + */ + function transformProperty(property, receiver) { + // We generate a name here in order to reuse the value cached by the relocated computed name expression (which uses the same generated name) + var emitAssignment = !context.getCompilerOptions().useDefineForClassFields; + var propertyName = ts.isComputedPropertyName(property.name) && !ts.isSimpleInlineableExpression(property.name.expression) + ? ts.updateComputedPropertyName(property.name, ts.getGeneratedNameForNode(property.name)) + : property.name; + if (shouldTransformPrivateFields && ts.isPrivateIdentifier(propertyName)) { + var privateIdentifierInfo = accessPrivateIdentifier(propertyName); + if (privateIdentifierInfo) { + switch (privateIdentifierInfo.placement) { + case 0 /* InstanceField */: { + return createPrivateInstanceFieldInitializer(receiver, ts.visitNode(property.initializer, visitor, ts.isExpression), privateIdentifierInfo.weakMapName); + } + } + } + else { + ts.Debug.fail("Undeclared private name for property declaration."); + } + } + if (ts.isPrivateIdentifier(propertyName) && !property.initializer) { + return undefined; + } + if (ts.isPrivateIdentifier(propertyName) && !property.initializer) { + return undefined; + } + var propertyOriginalNode = ts.getOriginalNode(property); + var initializer = property.initializer || emitAssignment ? ts.visitNode(property.initializer, visitor, ts.isExpression) + : ts.isParameterPropertyDeclaration(propertyOriginalNode, propertyOriginalNode.parent) && ts.isIdentifier(propertyName) ? propertyName + : ts.createVoidZero(); + if (emitAssignment || ts.isPrivateIdentifier(propertyName)) { + var memberAccess = ts.createMemberAccessForPropertyName(receiver, propertyName, /*location*/ propertyName); + return ts.createAssignment(memberAccess, initializer); + } + else { + var name = ts.isComputedPropertyName(propertyName) ? propertyName.expression + : ts.isIdentifier(propertyName) ? ts.createStringLiteral(ts.unescapeLeadingUnderscores(propertyName.escapedText)) + : propertyName; + var descriptor = ts.createPropertyDescriptor({ value: initializer, configurable: true, writable: true, enumerable: true }); + return ts.createObjectDefinePropertyCall(receiver, name, descriptor); + } + } + function enableSubstitutionForClassAliases() { + if ((enabledSubstitutions & 1 /* ClassAliases */) === 0) { + enabledSubstitutions |= 1 /* ClassAliases */; + // We need to enable substitutions for identifiers. This allows us to + // substitute class names inside of a class declaration. + context.enableSubstitution(75 /* Identifier */); + // Keep track of class aliases. + classAliases = []; + } + } + /** + * Hooks node substitutions. + * + * @param hint The context for the emitter. + * @param node The node to substitute. + */ + function onSubstituteNode(hint, node) { + node = previousOnSubstituteNode(hint, node); + if (hint === 1 /* Expression */) { + return substituteExpression(node); + } + return node; + } + function substituteExpression(node) { + switch (node.kind) { + case 75 /* Identifier */: + return substituteExpressionIdentifier(node); + } + return node; + } + function substituteExpressionIdentifier(node) { + return trySubstituteClassAlias(node) || node; + } + function trySubstituteClassAlias(node) { + if (enabledSubstitutions & 1 /* ClassAliases */) { + if (resolver.getNodeCheckFlags(node) & 33554432 /* ConstructorReferenceInClass */) { + // Due to the emit for class decorators, any reference to the class from inside of the class body + // must instead be rewritten to point to a temporary variable to avoid issues with the double-bind + // behavior of class names in ES6. + // Also, when emitting statics for class expressions, we must substitute a class alias for + // constructor references in static property initializers. + var declaration = resolver.getReferencedValueDeclaration(node); + if (declaration) { + var classAlias = classAliases[declaration.id]; // TODO: GH#18217 + if (classAlias) { + var clone_2 = ts.getSynthesizedClone(classAlias); + ts.setSourceMapRange(clone_2, node); + ts.setCommentRange(clone_2, node); + return clone_2; + } + } + } + } + return undefined; + } + /** + * If the name is a computed property, this function transforms it, then either returns an expression which caches the + * value of the result or the expression itself if the value is either unused or safe to inline into multiple locations + * @param shouldHoist Does the expression need to be reused? (ie, for an initializer or a decorator) + */ + function getPropertyNameExpressionIfNeeded(name, shouldHoist) { + if (ts.isComputedPropertyName(name)) { + var expression = ts.visitNode(name.expression, visitor, ts.isExpression); + var innerExpression = ts.skipPartiallyEmittedExpressions(expression); + var inlinable = ts.isSimpleInlineableExpression(innerExpression); + var alreadyTransformed = ts.isAssignmentExpression(innerExpression) && ts.isGeneratedIdentifier(innerExpression.left); + if (!alreadyTransformed && !inlinable && shouldHoist) { + var generatedName = ts.getGeneratedNameForNode(name); + hoistVariableDeclaration(generatedName); + return ts.createAssignment(generatedName, expression); + } + return (inlinable || ts.isIdentifier(innerExpression)) ? undefined : expression; + } + } + function startPrivateIdentifierEnvironment() { + privateIdentifierEnvironmentStack.push(currentPrivateIdentifierEnvironment); + currentPrivateIdentifierEnvironment = undefined; + } + function endPrivateIdentifierEnvironment() { + currentPrivateIdentifierEnvironment = privateIdentifierEnvironmentStack.pop(); + } + function addPrivateIdentifierToEnvironment(name) { + var text = ts.getTextOfPropertyName(name); + var weakMapName = ts.createOptimisticUniqueName("_" + text.substring(1)); + weakMapName.autoGenerateFlags |= 8 /* ReservedInNestedScopes */; + hoistVariableDeclaration(weakMapName); + (currentPrivateIdentifierEnvironment || (currentPrivateIdentifierEnvironment = ts.createUnderscoreEscapedMap())) + .set(name.escapedText, { placement: 0 /* InstanceField */, weakMapName: weakMapName }); + (pendingExpressions || (pendingExpressions = [])).push(ts.createAssignment(weakMapName, ts.createNew(ts.createIdentifier("WeakMap"), + /*typeArguments*/ undefined, []))); + } + function accessPrivateIdentifier(name) { + if (currentPrivateIdentifierEnvironment) { + var info = currentPrivateIdentifierEnvironment.get(name.escapedText); + if (info) { + return info; + } + } + for (var i = privateIdentifierEnvironmentStack.length - 1; i >= 0; --i) { + var env = privateIdentifierEnvironmentStack[i]; + if (!env) { + continue; + } + var info = env.get(name.escapedText); + if (info) { + return info; + } + } + return undefined; + } + function wrapPrivateIdentifierForDestructuringTarget(node) { + var parameter = ts.getGeneratedNameForNode(node); + var info = accessPrivateIdentifier(node.name); + if (!info) { + return ts.visitEachChild(node, visitor, context); + } + var receiver = node.expression; + // We cannot copy `this` or `super` into the function because they will be bound + // differently inside the function. + if (ts.isThisProperty(node) || ts.isSuperProperty(node) || !ts.isSimpleCopiableExpression(node.expression)) { + receiver = ts.createTempVariable(hoistVariableDeclaration); + receiver.autoGenerateFlags |= 8 /* ReservedInNestedScopes */; + (pendingExpressions || (pendingExpressions = [])).push(ts.createBinary(receiver, 62 /* EqualsToken */, node.expression)); + } + return ts.createPropertyAccess( + // Explicit parens required because of v8 regression (https://bugs.chromium.org/p/v8/issues/detail?id=9560) + ts.createParen(ts.createObjectLiteral([ + ts.createSetAccessor( + /*decorators*/ undefined, + /*modifiers*/ undefined, "value", [ts.createParameter( + /*decorators*/ undefined, + /*modifiers*/ undefined, + /*dotDotDotToken*/ undefined, parameter, + /*questionToken*/ undefined, + /*type*/ undefined, + /*initializer*/ undefined)], ts.createBlock([ts.createExpressionStatement(createPrivateIdentifierAssignment(info, receiver, parameter, 62 /* EqualsToken */))])) + ])), "value"); + } + function visitArrayAssignmentTarget(node) { + var target = ts.getTargetOfBindingOrAssignmentElement(node); + if (target && ts.isPrivateIdentifierPropertyAccessExpression(target)) { + var wrapped = wrapPrivateIdentifierForDestructuringTarget(target); + if (ts.isAssignmentExpression(node)) { + return ts.updateBinary(node, wrapped, ts.visitNode(node.right, visitor, ts.isExpression), node.operatorToken); + } + else if (ts.isSpreadElement(node)) { + return ts.updateSpread(node, wrapped); + } + else { + return wrapped; + } + } + return ts.visitNode(node, visitorDestructuringTarget); + } + function visitObjectAssignmentTarget(node) { + if (ts.isPropertyAssignment(node)) { + var target = ts.getTargetOfBindingOrAssignmentElement(node); + if (target && ts.isPrivateIdentifierPropertyAccessExpression(target)) { + var initializer = ts.getInitializerOfBindingOrAssignmentElement(node); + var wrapped = wrapPrivateIdentifierForDestructuringTarget(target); + return ts.updatePropertyAssignment(node, ts.visitNode(node.name, visitor), initializer ? ts.createAssignment(wrapped, ts.visitNode(initializer, visitor)) : wrapped); + } + return ts.updatePropertyAssignment(node, ts.visitNode(node.name, visitor), ts.visitNode(node.initializer, visitorDestructuringTarget)); + } + return ts.visitNode(node, visitor); + } + function visitAssignmentPattern(node) { + if (ts.isArrayLiteralExpression(node)) { + // Transforms private names in destructuring assignment array bindings. + // + // Source: + // ([ this.#myProp ] = [ "hello" ]); + // + // Transformation: + // [ { set value(x) { this.#myProp = x; } }.value ] = [ "hello" ]; + return ts.updateArrayLiteral(node, ts.visitNodes(node.elements, visitArrayAssignmentTarget, ts.isExpression)); + } + else { + // Transforms private names in destructuring assignment object bindings. + // + // Source: + // ({ stringProperty: this.#myProp } = { stringProperty: "hello" }); + // + // Transformation: + // ({ stringProperty: { set value(x) { this.#myProp = x; } }.value }) = { stringProperty: "hello" }; + return ts.updateObjectLiteral(node, ts.visitNodes(node.properties, visitObjectAssignmentTarget, ts.isObjectLiteralElementLike)); + } + } + } + ts.transformClassFields = transformClassFields; + function createPrivateInstanceFieldInitializer(receiver, initializer, weakMapName) { + return ts.createCall(ts.createPropertyAccess(weakMapName, "set"), + /*typeArguments*/ undefined, [receiver, initializer || ts.createVoidZero()]); + } + ts.classPrivateFieldGetHelper = { + name: "typescript:classPrivateFieldGet", + scoped: false, + text: "\n var __classPrivateFieldGet = (this && this.__classPrivateFieldGet) || function (receiver, privateMap) {\n if (!privateMap.has(receiver)) {\n throw new TypeError(\"attempted to get private field on non-instance\");\n }\n return privateMap.get(receiver);\n };" + }; + function createClassPrivateFieldGetHelper(context, receiver, privateField) { + context.requestEmitHelper(ts.classPrivateFieldGetHelper); + return ts.createCall(ts.getUnscopedHelperName("__classPrivateFieldGet"), /* typeArguments */ undefined, [receiver, privateField]); + } + ts.classPrivateFieldSetHelper = { + name: "typescript:classPrivateFieldSet", + scoped: false, + text: "\n var __classPrivateFieldSet = (this && this.__classPrivateFieldSet) || function (receiver, privateMap, value) {\n if (!privateMap.has(receiver)) {\n throw new TypeError(\"attempted to set private field on non-instance\");\n }\n privateMap.set(receiver, value);\n return value;\n };" + }; + function createClassPrivateFieldSetHelper(context, receiver, privateField, value) { + context.requestEmitHelper(ts.classPrivateFieldSetHelper); + return ts.createCall(ts.getUnscopedHelperName("__classPrivateFieldSet"), /* typeArguments */ undefined, [receiver, privateField, value]); + } +})(ts || (ts = {})); +/*@internal*/ +var ts; +(function (ts) { + var ES2017SubstitutionFlags; + (function (ES2017SubstitutionFlags) { + /** Enables substitutions for async methods with `super` calls. */ + ES2017SubstitutionFlags[ES2017SubstitutionFlags["AsyncMethodsWithSuper"] = 1] = "AsyncMethodsWithSuper"; + })(ES2017SubstitutionFlags || (ES2017SubstitutionFlags = {})); + var ContextFlags; + (function (ContextFlags) { + ContextFlags[ContextFlags["NonTopLevel"] = 1] = "NonTopLevel"; + ContextFlags[ContextFlags["HasLexicalThis"] = 2] = "HasLexicalThis"; + })(ContextFlags || (ContextFlags = {})); + function transformES2017(context) { + var resumeLexicalEnvironment = context.resumeLexicalEnvironment, endLexicalEnvironment = context.endLexicalEnvironment, hoistVariableDeclaration = context.hoistVariableDeclaration; + var resolver = context.getEmitResolver(); + var compilerOptions = context.getCompilerOptions(); + var languageVersion = ts.getEmitScriptTarget(compilerOptions); + /** + * Keeps track of whether expression substitution has been enabled for specific edge cases. + * They are persisted between each SourceFile transformation and should not be reset. + */ + var enabledSubstitutions; + /** + * This keeps track of containers where `super` is valid, for use with + * just-in-time substitution for `super` expressions inside of async methods. + */ + var enclosingSuperContainerFlags = 0; + var enclosingFunctionParameterNames; + /** + * Keeps track of property names accessed on super (`super.x`) within async functions. + */ + var capturedSuperProperties; + /** Whether the async function contains an element access on super (`super[x]`). */ + var hasSuperElementAccess; + /** A set of node IDs for generated super accessors (variable statements). */ + var substitutedSuperAccessors = []; + var contextFlags = 0; + // Save the previous transformation hooks. + var previousOnEmitNode = context.onEmitNode; + var previousOnSubstituteNode = context.onSubstituteNode; + // Set new transformation hooks. + context.onEmitNode = onEmitNode; + context.onSubstituteNode = onSubstituteNode; + return ts.chainBundle(transformSourceFile); + function transformSourceFile(node) { + if (node.isDeclarationFile) { + return node; + } + setContextFlag(1 /* NonTopLevel */, false); + setContextFlag(2 /* HasLexicalThis */, !ts.isEffectiveStrictModeSourceFile(node, compilerOptions)); + var visited = ts.visitEachChild(node, visitor, context); + ts.addEmitHelpers(visited, context.readEmitHelpers()); + return visited; + } + function setContextFlag(flag, val) { + contextFlags = val ? contextFlags | flag : contextFlags & ~flag; + } + function inContext(flags) { + return (contextFlags & flags) !== 0; + } + function inTopLevelContext() { + return !inContext(1 /* NonTopLevel */); + } + function inHasLexicalThisContext() { + return inContext(2 /* HasLexicalThis */); + } + function doWithContext(flags, cb, value) { + var contextFlagsToSet = flags & ~contextFlags; + if (contextFlagsToSet) { + setContextFlag(contextFlagsToSet, /*val*/ true); + var result = cb(value); + setContextFlag(contextFlagsToSet, /*val*/ false); + return result; + } + return cb(value); + } + function visitDefault(node) { + return ts.visitEachChild(node, visitor, context); + } + function visitor(node) { + if ((node.transformFlags & 64 /* ContainsES2017 */) === 0) { + return node; + } + switch (node.kind) { + case 126 /* AsyncKeyword */: + // ES2017 async modifier should be elided for targets < ES2017 + return undefined; + case 206 /* AwaitExpression */: + return visitAwaitExpression(node); + case 161 /* MethodDeclaration */: + return doWithContext(1 /* NonTopLevel */ | 2 /* HasLexicalThis */, visitMethodDeclaration, node); + case 244 /* FunctionDeclaration */: + return doWithContext(1 /* NonTopLevel */ | 2 /* HasLexicalThis */, visitFunctionDeclaration, node); + case 201 /* FunctionExpression */: + return doWithContext(1 /* NonTopLevel */ | 2 /* HasLexicalThis */, visitFunctionExpression, node); + case 202 /* ArrowFunction */: + return doWithContext(1 /* NonTopLevel */, visitArrowFunction, node); + case 194 /* PropertyAccessExpression */: + if (capturedSuperProperties && ts.isPropertyAccessExpression(node) && node.expression.kind === 102 /* SuperKeyword */) { + capturedSuperProperties.set(node.name.escapedText, true); + } + return ts.visitEachChild(node, visitor, context); + case 195 /* ElementAccessExpression */: + if (capturedSuperProperties && node.expression.kind === 102 /* SuperKeyword */) { + hasSuperElementAccess = true; + } + return ts.visitEachChild(node, visitor, context); + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + case 162 /* Constructor */: + case 245 /* ClassDeclaration */: + case 214 /* ClassExpression */: + return doWithContext(1 /* NonTopLevel */ | 2 /* HasLexicalThis */, visitDefault, node); + default: + return ts.visitEachChild(node, visitor, context); + } + } + function asyncBodyVisitor(node) { + if (ts.isNodeWithPossibleHoistedDeclaration(node)) { + switch (node.kind) { + case 225 /* VariableStatement */: + return visitVariableStatementInAsyncBody(node); + case 230 /* ForStatement */: + return visitForStatementInAsyncBody(node); + case 231 /* ForInStatement */: + return visitForInStatementInAsyncBody(node); + case 232 /* ForOfStatement */: + return visitForOfStatementInAsyncBody(node); + case 280 /* CatchClause */: + return visitCatchClauseInAsyncBody(node); + case 223 /* Block */: + case 237 /* SwitchStatement */: + case 251 /* CaseBlock */: + case 277 /* CaseClause */: + case 278 /* DefaultClause */: + case 240 /* TryStatement */: + case 228 /* DoStatement */: + case 229 /* WhileStatement */: + case 227 /* IfStatement */: + case 236 /* WithStatement */: + case 238 /* LabeledStatement */: + return ts.visitEachChild(node, asyncBodyVisitor, context); + default: + return ts.Debug.assertNever(node, "Unhandled node."); + } + } + return visitor(node); + } + function visitCatchClauseInAsyncBody(node) { + var catchClauseNames = ts.createUnderscoreEscapedMap(); + recordDeclarationName(node.variableDeclaration, catchClauseNames); // TODO: GH#18217 + // names declared in a catch variable are block scoped + var catchClauseUnshadowedNames; + catchClauseNames.forEach(function (_, escapedName) { + if (enclosingFunctionParameterNames.has(escapedName)) { + if (!catchClauseUnshadowedNames) { + catchClauseUnshadowedNames = ts.cloneMap(enclosingFunctionParameterNames); + } + catchClauseUnshadowedNames.delete(escapedName); + } + }); + if (catchClauseUnshadowedNames) { + var savedEnclosingFunctionParameterNames = enclosingFunctionParameterNames; + enclosingFunctionParameterNames = catchClauseUnshadowedNames; + var result = ts.visitEachChild(node, asyncBodyVisitor, context); + enclosingFunctionParameterNames = savedEnclosingFunctionParameterNames; + return result; + } + else { + return ts.visitEachChild(node, asyncBodyVisitor, context); + } + } + function visitVariableStatementInAsyncBody(node) { + if (isVariableDeclarationListWithCollidingName(node.declarationList)) { + var expression = visitVariableDeclarationListWithCollidingNames(node.declarationList, /*hasReceiver*/ false); + return expression ? ts.createExpressionStatement(expression) : undefined; + } + return ts.visitEachChild(node, visitor, context); + } + function visitForInStatementInAsyncBody(node) { + return ts.updateForIn(node, isVariableDeclarationListWithCollidingName(node.initializer) + ? visitVariableDeclarationListWithCollidingNames(node.initializer, /*hasReceiver*/ true) + : ts.visitNode(node.initializer, visitor, ts.isForInitializer), ts.visitNode(node.expression, visitor, ts.isExpression), ts.visitNode(node.statement, asyncBodyVisitor, ts.isStatement, ts.liftToBlock)); + } + function visitForOfStatementInAsyncBody(node) { + return ts.updateForOf(node, ts.visitNode(node.awaitModifier, visitor, ts.isToken), isVariableDeclarationListWithCollidingName(node.initializer) + ? visitVariableDeclarationListWithCollidingNames(node.initializer, /*hasReceiver*/ true) + : ts.visitNode(node.initializer, visitor, ts.isForInitializer), ts.visitNode(node.expression, visitor, ts.isExpression), ts.visitNode(node.statement, asyncBodyVisitor, ts.isStatement, ts.liftToBlock)); + } + function visitForStatementInAsyncBody(node) { + var initializer = node.initializer; // TODO: GH#18217 + return ts.updateFor(node, isVariableDeclarationListWithCollidingName(initializer) + ? visitVariableDeclarationListWithCollidingNames(initializer, /*hasReceiver*/ false) + : ts.visitNode(node.initializer, visitor, ts.isForInitializer), ts.visitNode(node.condition, visitor, ts.isExpression), ts.visitNode(node.incrementor, visitor, ts.isExpression), ts.visitNode(node.statement, asyncBodyVisitor, ts.isStatement, ts.liftToBlock)); + } + /** + * Visits an AwaitExpression node. + * + * This function will be called any time a ES2017 await expression is encountered. + * + * @param node The node to visit. + */ + function visitAwaitExpression(node) { + // do not downlevel a top-level await as it is module syntax... + if (inTopLevelContext()) { + return ts.visitEachChild(node, visitor, context); + } + return ts.setOriginalNode(ts.setTextRange(ts.createYield( + /*asteriskToken*/ undefined, ts.visitNode(node.expression, visitor, ts.isExpression)), node), node); + } + /** + * Visits a MethodDeclaration node. + * + * This function will be called when one of the following conditions are met: + * - The node is marked as async + * + * @param node The node to visit. + */ + function visitMethodDeclaration(node) { + return ts.updateMethod(node, + /*decorators*/ undefined, ts.visitNodes(node.modifiers, visitor, ts.isModifier), node.asteriskToken, node.name, + /*questionToken*/ undefined, + /*typeParameters*/ undefined, ts.visitParameterList(node.parameters, visitor, context), + /*type*/ undefined, ts.getFunctionFlags(node) & 2 /* Async */ + ? transformAsyncFunctionBody(node) + : ts.visitFunctionBody(node.body, visitor, context)); + } + /** + * Visits a FunctionDeclaration node. + * + * This function will be called when one of the following conditions are met: + * - The node is marked async + * + * @param node The node to visit. + */ + function visitFunctionDeclaration(node) { + return ts.updateFunctionDeclaration(node, + /*decorators*/ undefined, ts.visitNodes(node.modifiers, visitor, ts.isModifier), node.asteriskToken, node.name, + /*typeParameters*/ undefined, ts.visitParameterList(node.parameters, visitor, context), + /*type*/ undefined, ts.getFunctionFlags(node) & 2 /* Async */ + ? transformAsyncFunctionBody(node) + : ts.visitFunctionBody(node.body, visitor, context)); + } + /** + * Visits a FunctionExpression node. + * + * This function will be called when one of the following conditions are met: + * - The node is marked async + * + * @param node The node to visit. + */ + function visitFunctionExpression(node) { + return ts.updateFunctionExpression(node, ts.visitNodes(node.modifiers, visitor, ts.isModifier), node.asteriskToken, node.name, + /*typeParameters*/ undefined, ts.visitParameterList(node.parameters, visitor, context), + /*type*/ undefined, ts.getFunctionFlags(node) & 2 /* Async */ + ? transformAsyncFunctionBody(node) + : ts.visitFunctionBody(node.body, visitor, context)); + } + /** + * Visits an ArrowFunction. + * + * This function will be called when one of the following conditions are met: + * - The node is marked async + * + * @param node The node to visit. + */ + function visitArrowFunction(node) { + return ts.updateArrowFunction(node, ts.visitNodes(node.modifiers, visitor, ts.isModifier), + /*typeParameters*/ undefined, ts.visitParameterList(node.parameters, visitor, context), + /*type*/ undefined, node.equalsGreaterThanToken, ts.getFunctionFlags(node) & 2 /* Async */ + ? transformAsyncFunctionBody(node) + : ts.visitFunctionBody(node.body, visitor, context)); + } + function recordDeclarationName(_a, names) { + var name = _a.name; + if (ts.isIdentifier(name)) { + names.set(name.escapedText, true); + } + else { + for (var _i = 0, _b = name.elements; _i < _b.length; _i++) { + var element = _b[_i]; + if (!ts.isOmittedExpression(element)) { + recordDeclarationName(element, names); + } + } + } + } + function isVariableDeclarationListWithCollidingName(node) { + return !!node + && ts.isVariableDeclarationList(node) + && !(node.flags & 3 /* BlockScoped */) + && node.declarations.some(collidesWithParameterName); + } + function visitVariableDeclarationListWithCollidingNames(node, hasReceiver) { + hoistVariableDeclarationList(node); + var variables = ts.getInitializedVariables(node); + if (variables.length === 0) { + if (hasReceiver) { + return ts.visitNode(ts.convertToAssignmentElementTarget(node.declarations[0].name), visitor, ts.isExpression); + } + return undefined; + } + return ts.inlineExpressions(ts.map(variables, transformInitializedVariable)); + } + function hoistVariableDeclarationList(node) { + ts.forEach(node.declarations, hoistVariable); + } + function hoistVariable(_a) { + var name = _a.name; + if (ts.isIdentifier(name)) { + hoistVariableDeclaration(name); + } + else { + for (var _i = 0, _b = name.elements; _i < _b.length; _i++) { + var element = _b[_i]; + if (!ts.isOmittedExpression(element)) { + hoistVariable(element); + } + } + } + } + function transformInitializedVariable(node) { + var converted = ts.setSourceMapRange(ts.createAssignment(ts.convertToAssignmentElementTarget(node.name), node.initializer), node); + return ts.visitNode(converted, visitor, ts.isExpression); + } + function collidesWithParameterName(_a) { + var name = _a.name; + if (ts.isIdentifier(name)) { + return enclosingFunctionParameterNames.has(name.escapedText); + } + else { + for (var _i = 0, _b = name.elements; _i < _b.length; _i++) { + var element = _b[_i]; + if (!ts.isOmittedExpression(element) && collidesWithParameterName(element)) { + return true; + } + } + } + return false; + } + function transformAsyncFunctionBody(node) { + resumeLexicalEnvironment(); + var original = ts.getOriginalNode(node, ts.isFunctionLike); + var nodeType = original.type; + var promiseConstructor = languageVersion < 2 /* ES2015 */ ? getPromiseConstructor(nodeType) : undefined; + var isArrowFunction = node.kind === 202 /* ArrowFunction */; + var hasLexicalArguments = (resolver.getNodeCheckFlags(node) & 8192 /* CaptureArguments */) !== 0; + // An async function is emit as an outer function that calls an inner + // generator function. To preserve lexical bindings, we pass the current + // `this` and `arguments` objects to `__awaiter`. The generator function + // passed to `__awaiter` is executed inside of the callback to the + // promise constructor. + var savedEnclosingFunctionParameterNames = enclosingFunctionParameterNames; + enclosingFunctionParameterNames = ts.createUnderscoreEscapedMap(); + for (var _i = 0, _a = node.parameters; _i < _a.length; _i++) { + var parameter = _a[_i]; + recordDeclarationName(parameter, enclosingFunctionParameterNames); + } + var savedCapturedSuperProperties = capturedSuperProperties; + var savedHasSuperElementAccess = hasSuperElementAccess; + if (!isArrowFunction) { + capturedSuperProperties = ts.createUnderscoreEscapedMap(); + hasSuperElementAccess = false; + } + var result; + if (!isArrowFunction) { + var statements = []; + var statementOffset = ts.addPrologue(statements, node.body.statements, /*ensureUseStrict*/ false, visitor); + statements.push(ts.createReturn(createAwaiterHelper(context, inHasLexicalThisContext(), hasLexicalArguments, promiseConstructor, transformAsyncFunctionBodyWorker(node.body, statementOffset)))); + ts.insertStatementsAfterStandardPrologue(statements, endLexicalEnvironment()); + // Minor optimization, emit `_super` helper to capture `super` access in an arrow. + // This step isn't needed if we eventually transform this to ES5. + var emitSuperHelpers = languageVersion >= 2 /* ES2015 */ && resolver.getNodeCheckFlags(node) & (4096 /* AsyncMethodWithSuperBinding */ | 2048 /* AsyncMethodWithSuper */); + if (emitSuperHelpers) { + enableSubstitutionForAsyncMethodsWithSuper(); + if (ts.hasEntries(capturedSuperProperties)) { + var variableStatement = createSuperAccessVariableStatement(resolver, node, capturedSuperProperties); + substitutedSuperAccessors[ts.getNodeId(variableStatement)] = true; + ts.insertStatementsAfterStandardPrologue(statements, [variableStatement]); + } + } + var block = ts.createBlock(statements, /*multiLine*/ true); + ts.setTextRange(block, node.body); + if (emitSuperHelpers && hasSuperElementAccess) { + // Emit helpers for super element access expressions (`super[x]`). + if (resolver.getNodeCheckFlags(node) & 4096 /* AsyncMethodWithSuperBinding */) { + ts.addEmitHelper(block, ts.advancedAsyncSuperHelper); + } + else if (resolver.getNodeCheckFlags(node) & 2048 /* AsyncMethodWithSuper */) { + ts.addEmitHelper(block, ts.asyncSuperHelper); + } + } + result = block; + } + else { + var expression = createAwaiterHelper(context, inHasLexicalThisContext(), hasLexicalArguments, promiseConstructor, transformAsyncFunctionBodyWorker(node.body)); + var declarations = endLexicalEnvironment(); + if (ts.some(declarations)) { + var block = ts.convertToFunctionBody(expression); + result = ts.updateBlock(block, ts.setTextRange(ts.createNodeArray(ts.concatenate(declarations, block.statements)), block.statements)); + } + else { + result = expression; + } + } + enclosingFunctionParameterNames = savedEnclosingFunctionParameterNames; + if (!isArrowFunction) { + capturedSuperProperties = savedCapturedSuperProperties; + hasSuperElementAccess = savedHasSuperElementAccess; + } + return result; + } + function transformAsyncFunctionBodyWorker(body, start) { + if (ts.isBlock(body)) { + return ts.updateBlock(body, ts.visitNodes(body.statements, asyncBodyVisitor, ts.isStatement, start)); + } + else { + return ts.convertToFunctionBody(ts.visitNode(body, asyncBodyVisitor, ts.isConciseBody)); + } + } + function getPromiseConstructor(type) { + var typeName = type && ts.getEntityNameFromTypeNode(type); + if (typeName && ts.isEntityName(typeName)) { + var serializationKind = resolver.getTypeReferenceSerializationKind(typeName); + if (serializationKind === ts.TypeReferenceSerializationKind.TypeWithConstructSignatureAndValue + || serializationKind === ts.TypeReferenceSerializationKind.Unknown) { + return typeName; + } + } + return undefined; + } + function enableSubstitutionForAsyncMethodsWithSuper() { + if ((enabledSubstitutions & 1 /* AsyncMethodsWithSuper */) === 0) { + enabledSubstitutions |= 1 /* AsyncMethodsWithSuper */; + // We need to enable substitutions for call, property access, and element access + // if we need to rewrite super calls. + context.enableSubstitution(196 /* CallExpression */); + context.enableSubstitution(194 /* PropertyAccessExpression */); + context.enableSubstitution(195 /* ElementAccessExpression */); + // We need to be notified when entering and exiting declarations that bind super. + context.enableEmitNotification(245 /* ClassDeclaration */); + context.enableEmitNotification(161 /* MethodDeclaration */); + context.enableEmitNotification(163 /* GetAccessor */); + context.enableEmitNotification(164 /* SetAccessor */); + context.enableEmitNotification(162 /* Constructor */); + // We need to be notified when entering the generated accessor arrow functions. + context.enableEmitNotification(225 /* VariableStatement */); + } + } + /** + * Hook for node emit. + * + * @param hint A hint as to the intended usage of the node. + * @param node The node to emit. + * @param emit A callback used to emit the node in the printer. + */ + function onEmitNode(hint, node, emitCallback) { + // If we need to support substitutions for `super` in an async method, + // we should track it here. + if (enabledSubstitutions & 1 /* AsyncMethodsWithSuper */ && isSuperContainer(node)) { + var superContainerFlags = resolver.getNodeCheckFlags(node) & (2048 /* AsyncMethodWithSuper */ | 4096 /* AsyncMethodWithSuperBinding */); + if (superContainerFlags !== enclosingSuperContainerFlags) { + var savedEnclosingSuperContainerFlags = enclosingSuperContainerFlags; + enclosingSuperContainerFlags = superContainerFlags; + previousOnEmitNode(hint, node, emitCallback); + enclosingSuperContainerFlags = savedEnclosingSuperContainerFlags; + return; + } + } + // Disable substitution in the generated super accessor itself. + else if (enabledSubstitutions && substitutedSuperAccessors[ts.getNodeId(node)]) { + var savedEnclosingSuperContainerFlags = enclosingSuperContainerFlags; + enclosingSuperContainerFlags = 0; + previousOnEmitNode(hint, node, emitCallback); + enclosingSuperContainerFlags = savedEnclosingSuperContainerFlags; + return; + } + previousOnEmitNode(hint, node, emitCallback); + } + /** + * Hooks node substitutions. + * + * @param hint A hint as to the intended usage of the node. + * @param node The node to substitute. + */ + function onSubstituteNode(hint, node) { + node = previousOnSubstituteNode(hint, node); + if (hint === 1 /* Expression */ && enclosingSuperContainerFlags) { + return substituteExpression(node); + } + return node; + } + function substituteExpression(node) { + switch (node.kind) { + case 194 /* PropertyAccessExpression */: + return substitutePropertyAccessExpression(node); + case 195 /* ElementAccessExpression */: + return substituteElementAccessExpression(node); + case 196 /* CallExpression */: + return substituteCallExpression(node); + } + return node; + } + function substitutePropertyAccessExpression(node) { + if (node.expression.kind === 102 /* SuperKeyword */) { + return ts.setTextRange(ts.createPropertyAccess(ts.createFileLevelUniqueName("_super"), node.name), node); + } + return node; + } + function substituteElementAccessExpression(node) { + if (node.expression.kind === 102 /* SuperKeyword */) { + return createSuperElementAccessInAsyncMethod(node.argumentExpression, node); + } + return node; + } + function substituteCallExpression(node) { + var expression = node.expression; + if (ts.isSuperProperty(expression)) { + var argumentExpression = ts.isPropertyAccessExpression(expression) + ? substitutePropertyAccessExpression(expression) + : substituteElementAccessExpression(expression); + return ts.createCall(ts.createPropertyAccess(argumentExpression, "call"), + /*typeArguments*/ undefined, __spreadArrays([ + ts.createThis() + ], node.arguments)); + } + return node; + } + function isSuperContainer(node) { + var kind = node.kind; + return kind === 245 /* ClassDeclaration */ + || kind === 162 /* Constructor */ + || kind === 161 /* MethodDeclaration */ + || kind === 163 /* GetAccessor */ + || kind === 164 /* SetAccessor */; + } + function createSuperElementAccessInAsyncMethod(argumentExpression, location) { + if (enclosingSuperContainerFlags & 4096 /* AsyncMethodWithSuperBinding */) { + return ts.setTextRange(ts.createPropertyAccess(ts.createCall(ts.createFileLevelUniqueName("_superIndex"), + /*typeArguments*/ undefined, [argumentExpression]), "value"), location); + } + else { + return ts.setTextRange(ts.createCall(ts.createFileLevelUniqueName("_superIndex"), + /*typeArguments*/ undefined, [argumentExpression]), location); + } + } + } + ts.transformES2017 = transformES2017; + /** Creates a variable named `_super` with accessor properties for the given property names. */ + function createSuperAccessVariableStatement(resolver, node, names) { + // Create a variable declaration with a getter/setter (if binding) definition for each name: + // const _super = Object.create(null, { x: { get: () => super.x, set: (v) => super.x = v }, ... }); + var hasBinding = (resolver.getNodeCheckFlags(node) & 4096 /* AsyncMethodWithSuperBinding */) !== 0; + var accessors = []; + names.forEach(function (_, key) { + var name = ts.unescapeLeadingUnderscores(key); + var getterAndSetter = []; + getterAndSetter.push(ts.createPropertyAssignment("get", ts.createArrowFunction( + /* modifiers */ undefined, + /* typeParameters */ undefined, + /* parameters */ [], + /* type */ undefined, + /* equalsGreaterThanToken */ undefined, ts.setEmitFlags(ts.createPropertyAccess(ts.setEmitFlags(ts.createSuper(), 4 /* NoSubstitution */), name), 4 /* NoSubstitution */)))); + if (hasBinding) { + getterAndSetter.push(ts.createPropertyAssignment("set", ts.createArrowFunction( + /* modifiers */ undefined, + /* typeParameters */ undefined, + /* parameters */ [ + ts.createParameter( + /* decorators */ undefined, + /* modifiers */ undefined, + /* dotDotDotToken */ undefined, "v", + /* questionToken */ undefined, + /* type */ undefined, + /* initializer */ undefined) + ], + /* type */ undefined, + /* equalsGreaterThanToken */ undefined, ts.createAssignment(ts.setEmitFlags(ts.createPropertyAccess(ts.setEmitFlags(ts.createSuper(), 4 /* NoSubstitution */), name), 4 /* NoSubstitution */), ts.createIdentifier("v"))))); + } + accessors.push(ts.createPropertyAssignment(name, ts.createObjectLiteral(getterAndSetter))); + }); + return ts.createVariableStatement( + /* modifiers */ undefined, ts.createVariableDeclarationList([ + ts.createVariableDeclaration(ts.createFileLevelUniqueName("_super"), + /* type */ undefined, ts.createCall(ts.createPropertyAccess(ts.createIdentifier("Object"), "create"), + /* typeArguments */ undefined, [ + ts.createNull(), + ts.createObjectLiteral(accessors, /* multiline */ true) + ])) + ], 2 /* Const */)); + } + ts.createSuperAccessVariableStatement = createSuperAccessVariableStatement; + ts.awaiterHelper = { + name: "typescript:awaiter", + importName: "__awaiter", + scoped: false, + priority: 5, + text: "\n var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {\n function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\n return new (P || (P = Promise))(function (resolve, reject) {\n function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\n function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\n function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\n step((generator = generator.apply(thisArg, _arguments || [])).next());\n });\n };" + }; + function createAwaiterHelper(context, hasLexicalThis, hasLexicalArguments, promiseConstructor, body) { + context.requestEmitHelper(ts.awaiterHelper); + var generatorFunc = ts.createFunctionExpression( + /*modifiers*/ undefined, ts.createToken(41 /* AsteriskToken */), + /*name*/ undefined, + /*typeParameters*/ undefined, + /*parameters*/ [], + /*type*/ undefined, body); + // Mark this node as originally an async function + (generatorFunc.emitNode || (generatorFunc.emitNode = {})).flags |= 262144 /* AsyncFunctionBody */ | 524288 /* ReuseTempVariableScope */; + return ts.createCall(ts.getUnscopedHelperName("__awaiter"), + /*typeArguments*/ undefined, [ + hasLexicalThis ? ts.createThis() : ts.createVoidZero(), + hasLexicalArguments ? ts.createIdentifier("arguments") : ts.createVoidZero(), + promiseConstructor ? ts.createExpressionFromEntityName(promiseConstructor) : ts.createVoidZero(), + generatorFunc + ]); + } + ts.asyncSuperHelper = { + name: "typescript:async-super", + scoped: true, + text: ts.helperString(__makeTemplateObject(["\n const ", " = name => super[name];"], ["\n const ", " = name => super[name];"]), "_superIndex") + }; + ts.advancedAsyncSuperHelper = { + name: "typescript:advanced-async-super", + scoped: true, + text: ts.helperString(__makeTemplateObject(["\n const ", " = (function (geti, seti) {\n const cache = Object.create(null);\n return name => cache[name] || (cache[name] = { get value() { return geti(name); }, set value(v) { seti(name, v); } });\n })(name => super[name], (name, value) => super[name] = value);"], ["\n const ", " = (function (geti, seti) {\n const cache = Object.create(null);\n return name => cache[name] || (cache[name] = { get value() { return geti(name); }, set value(v) { seti(name, v); } });\n })(name => super[name], (name, value) => super[name] = value);"]), "_superIndex") + }; +})(ts || (ts = {})); +/*@internal*/ +var ts; +(function (ts) { + var ESNextSubstitutionFlags; + (function (ESNextSubstitutionFlags) { + /** Enables substitutions for async methods with `super` calls. */ + ESNextSubstitutionFlags[ESNextSubstitutionFlags["AsyncMethodsWithSuper"] = 1] = "AsyncMethodsWithSuper"; + })(ESNextSubstitutionFlags || (ESNextSubstitutionFlags = {})); + // Facts we track as we traverse the tree + var HierarchyFacts; + (function (HierarchyFacts) { + HierarchyFacts[HierarchyFacts["None"] = 0] = "None"; + // + // Ancestor facts + // + HierarchyFacts[HierarchyFacts["HasLexicalThis"] = 1] = "HasLexicalThis"; + HierarchyFacts[HierarchyFacts["IterationContainer"] = 2] = "IterationContainer"; + // NOTE: do not add more ancestor flags without also updating AncestorFactsMask below. + // + // Ancestor masks + // + HierarchyFacts[HierarchyFacts["AncestorFactsMask"] = 3] = "AncestorFactsMask"; + HierarchyFacts[HierarchyFacts["SourceFileIncludes"] = 1] = "SourceFileIncludes"; + HierarchyFacts[HierarchyFacts["SourceFileExcludes"] = 2] = "SourceFileExcludes"; + HierarchyFacts[HierarchyFacts["StrictModeSourceFileIncludes"] = 0] = "StrictModeSourceFileIncludes"; + HierarchyFacts[HierarchyFacts["ClassOrFunctionIncludes"] = 1] = "ClassOrFunctionIncludes"; + HierarchyFacts[HierarchyFacts["ClassOrFunctionExcludes"] = 2] = "ClassOrFunctionExcludes"; + HierarchyFacts[HierarchyFacts["ArrowFunctionIncludes"] = 0] = "ArrowFunctionIncludes"; + HierarchyFacts[HierarchyFacts["ArrowFunctionExcludes"] = 2] = "ArrowFunctionExcludes"; + HierarchyFacts[HierarchyFacts["IterationStatementIncludes"] = 2] = "IterationStatementIncludes"; + HierarchyFacts[HierarchyFacts["IterationStatementExcludes"] = 0] = "IterationStatementExcludes"; + })(HierarchyFacts || (HierarchyFacts = {})); + function transformES2018(context) { + var resumeLexicalEnvironment = context.resumeLexicalEnvironment, endLexicalEnvironment = context.endLexicalEnvironment, hoistVariableDeclaration = context.hoistVariableDeclaration; + var resolver = context.getEmitResolver(); + var compilerOptions = context.getCompilerOptions(); + var languageVersion = ts.getEmitScriptTarget(compilerOptions); + var previousOnEmitNode = context.onEmitNode; + context.onEmitNode = onEmitNode; + var previousOnSubstituteNode = context.onSubstituteNode; + context.onSubstituteNode = onSubstituteNode; + var exportedVariableStatement = false; + var enabledSubstitutions; + var enclosingFunctionFlags; + var enclosingSuperContainerFlags = 0; + var hierarchyFacts = 0; + var currentSourceFile; + var taggedTemplateStringDeclarations; + /** Keeps track of property names accessed on super (`super.x`) within async functions. */ + var capturedSuperProperties; + /** Whether the async function contains an element access on super (`super[x]`). */ + var hasSuperElementAccess; + /** A set of node IDs for generated super accessors. */ + var substitutedSuperAccessors = []; + return ts.chainBundle(transformSourceFile); + function affectsSubtree(excludeFacts, includeFacts) { + return hierarchyFacts !== (hierarchyFacts & ~excludeFacts | includeFacts); + } + /** + * Sets the `HierarchyFacts` for this node prior to visiting this node's subtree, returning the facts set prior to modification. + * @param excludeFacts The existing `HierarchyFacts` to reset before visiting the subtree. + * @param includeFacts The new `HierarchyFacts` to set before visiting the subtree. + */ + function enterSubtree(excludeFacts, includeFacts) { + var ancestorFacts = hierarchyFacts; + hierarchyFacts = (hierarchyFacts & ~excludeFacts | includeFacts) & 3 /* AncestorFactsMask */; + return ancestorFacts; + } + /** + * Restores the `HierarchyFacts` for this node's ancestor after visiting this node's + * subtree. + * @param ancestorFacts The `HierarchyFacts` of the ancestor to restore after visiting the subtree. + */ + function exitSubtree(ancestorFacts) { + hierarchyFacts = ancestorFacts; + } + function recordTaggedTemplateString(temp) { + taggedTemplateStringDeclarations = ts.append(taggedTemplateStringDeclarations, ts.createVariableDeclaration(temp)); + } + function transformSourceFile(node) { + if (node.isDeclarationFile) { + return node; + } + currentSourceFile = node; + var visited = visitSourceFile(node); + ts.addEmitHelpers(visited, context.readEmitHelpers()); + currentSourceFile = undefined; + taggedTemplateStringDeclarations = undefined; + return visited; + } + function visitor(node) { + return visitorWorker(node, /*noDestructuringValue*/ false); + } + function visitorNoDestructuringValue(node) { + return visitorWorker(node, /*noDestructuringValue*/ true); + } + function visitorNoAsyncModifier(node) { + if (node.kind === 126 /* AsyncKeyword */) { + return undefined; + } + return node; + } + function doWithHierarchyFacts(cb, value, excludeFacts, includeFacts) { + if (affectsSubtree(excludeFacts, includeFacts)) { + var ancestorFacts = enterSubtree(excludeFacts, includeFacts); + var result = cb(value); + exitSubtree(ancestorFacts); + return result; + } + return cb(value); + } + function visitDefault(node) { + return ts.visitEachChild(node, visitor, context); + } + function visitorWorker(node, noDestructuringValue) { + if ((node.transformFlags & 32 /* ContainsES2018 */) === 0) { + return node; + } + switch (node.kind) { + case 206 /* AwaitExpression */: + return visitAwaitExpression(node); + case 212 /* YieldExpression */: + return visitYieldExpression(node); + case 235 /* ReturnStatement */: + return visitReturnStatement(node); + case 238 /* LabeledStatement */: + return visitLabeledStatement(node); + case 193 /* ObjectLiteralExpression */: + return visitObjectLiteralExpression(node); + case 209 /* BinaryExpression */: + return visitBinaryExpression(node, noDestructuringValue); + case 280 /* CatchClause */: + return visitCatchClause(node); + case 225 /* VariableStatement */: + return visitVariableStatement(node); + case 242 /* VariableDeclaration */: + return visitVariableDeclaration(node); + case 228 /* DoStatement */: + case 229 /* WhileStatement */: + case 231 /* ForInStatement */: + return doWithHierarchyFacts(visitDefault, node, 0 /* IterationStatementExcludes */, 2 /* IterationStatementIncludes */); + case 232 /* ForOfStatement */: + return visitForOfStatement(node, /*outermostLabeledStatement*/ undefined); + case 230 /* ForStatement */: + return doWithHierarchyFacts(visitForStatement, node, 0 /* IterationStatementExcludes */, 2 /* IterationStatementIncludes */); + case 205 /* VoidExpression */: + return visitVoidExpression(node); + case 162 /* Constructor */: + return doWithHierarchyFacts(visitConstructorDeclaration, node, 2 /* ClassOrFunctionExcludes */, 1 /* ClassOrFunctionIncludes */); + case 161 /* MethodDeclaration */: + return doWithHierarchyFacts(visitMethodDeclaration, node, 2 /* ClassOrFunctionExcludes */, 1 /* ClassOrFunctionIncludes */); + case 163 /* GetAccessor */: + return doWithHierarchyFacts(visitGetAccessorDeclaration, node, 2 /* ClassOrFunctionExcludes */, 1 /* ClassOrFunctionIncludes */); + case 164 /* SetAccessor */: + return doWithHierarchyFacts(visitSetAccessorDeclaration, node, 2 /* ClassOrFunctionExcludes */, 1 /* ClassOrFunctionIncludes */); + case 244 /* FunctionDeclaration */: + return doWithHierarchyFacts(visitFunctionDeclaration, node, 2 /* ClassOrFunctionExcludes */, 1 /* ClassOrFunctionIncludes */); + case 201 /* FunctionExpression */: + return doWithHierarchyFacts(visitFunctionExpression, node, 2 /* ClassOrFunctionExcludes */, 1 /* ClassOrFunctionIncludes */); + case 202 /* ArrowFunction */: + return doWithHierarchyFacts(visitArrowFunction, node, 2 /* ArrowFunctionExcludes */, 0 /* ArrowFunctionIncludes */); + case 156 /* Parameter */: + return visitParameter(node); + case 226 /* ExpressionStatement */: + return visitExpressionStatement(node); + case 200 /* ParenthesizedExpression */: + return visitParenthesizedExpression(node, noDestructuringValue); + case 198 /* TaggedTemplateExpression */: + return visitTaggedTemplateExpression(node); + case 194 /* PropertyAccessExpression */: + if (capturedSuperProperties && ts.isPropertyAccessExpression(node) && node.expression.kind === 102 /* SuperKeyword */) { + capturedSuperProperties.set(node.name.escapedText, true); + } + return ts.visitEachChild(node, visitor, context); + case 195 /* ElementAccessExpression */: + if (capturedSuperProperties && node.expression.kind === 102 /* SuperKeyword */) { + hasSuperElementAccess = true; + } + return ts.visitEachChild(node, visitor, context); + case 245 /* ClassDeclaration */: + case 214 /* ClassExpression */: + return doWithHierarchyFacts(visitDefault, node, 2 /* ClassOrFunctionExcludes */, 1 /* ClassOrFunctionIncludes */); + default: + return ts.visitEachChild(node, visitor, context); + } + } + function visitAwaitExpression(node) { + if (enclosingFunctionFlags & 2 /* Async */ && enclosingFunctionFlags & 1 /* Generator */) { + return ts.setOriginalNode(ts.setTextRange(ts.createYield(createAwaitHelper(context, ts.visitNode(node.expression, visitor, ts.isExpression))), + /*location*/ node), node); + } + return ts.visitEachChild(node, visitor, context); + } + function visitYieldExpression(node) { + if (enclosingFunctionFlags & 2 /* Async */ && enclosingFunctionFlags & 1 /* Generator */) { + if (node.asteriskToken) { + var expression = ts.visitNode(node.expression, visitor, ts.isExpression); + return ts.setOriginalNode(ts.setTextRange(ts.createYield(createAwaitHelper(context, ts.updateYield(node, node.asteriskToken, createAsyncDelegatorHelper(context, createAsyncValuesHelper(context, expression, expression), expression)))), node), node); + } + return ts.setOriginalNode(ts.setTextRange(ts.createYield(createDownlevelAwait(node.expression + ? ts.visitNode(node.expression, visitor, ts.isExpression) + : ts.createVoidZero())), node), node); + } + return ts.visitEachChild(node, visitor, context); + } + function visitReturnStatement(node) { + if (enclosingFunctionFlags & 2 /* Async */ && enclosingFunctionFlags & 1 /* Generator */) { + return ts.updateReturn(node, createDownlevelAwait(node.expression ? ts.visitNode(node.expression, visitor, ts.isExpression) : ts.createVoidZero())); + } + return ts.visitEachChild(node, visitor, context); + } + function visitLabeledStatement(node) { + if (enclosingFunctionFlags & 2 /* Async */) { + var statement = ts.unwrapInnermostStatementOfLabel(node); + if (statement.kind === 232 /* ForOfStatement */ && statement.awaitModifier) { + return visitForOfStatement(statement, node); + } + return ts.restoreEnclosingLabel(ts.visitNode(statement, visitor, ts.isStatement, ts.liftToBlock), node); + } + return ts.visitEachChild(node, visitor, context); + } + function chunkObjectLiteralElements(elements) { + var chunkObject; + var objects = []; + for (var _i = 0, elements_4 = elements; _i < elements_4.length; _i++) { + var e = elements_4[_i]; + if (e.kind === 283 /* SpreadAssignment */) { + if (chunkObject) { + objects.push(ts.createObjectLiteral(chunkObject)); + chunkObject = undefined; + } + var target = e.expression; + objects.push(ts.visitNode(target, visitor, ts.isExpression)); + } + else { + chunkObject = ts.append(chunkObject, e.kind === 281 /* PropertyAssignment */ + ? ts.createPropertyAssignment(e.name, ts.visitNode(e.initializer, visitor, ts.isExpression)) + : ts.visitNode(e, visitor, ts.isObjectLiteralElementLike)); + } + } + if (chunkObject) { + objects.push(ts.createObjectLiteral(chunkObject)); + } + return objects; + } + function visitObjectLiteralExpression(node) { + if (node.transformFlags & 16384 /* ContainsObjectRestOrSpread */) { + // spread elements emit like so: + // non-spread elements are chunked together into object literals, and then all are passed to __assign: + // { a, ...o, b } => __assign(__assign({a}, o), {b}); + // If the first element is a spread element, then the first argument to __assign is {}: + // { ...o, a, b, ...o2 } => __assign(__assign(__assign({}, o), {a, b}), o2) + // + // We cannot call __assign with more than two elements, since any element could cause side effects. For + // example: + // var k = { a: 1, b: 2 }; + // var o = { a: 3, ...k, b: k.a++ }; + // // expected: { a: 1, b: 1 } + // If we translate the above to `__assign({ a: 3 }, k, { b: k.a++ })`, the `k.a++` will evaluate before + // `k` is spread and we end up with `{ a: 2, b: 1 }`. + // + // This also occurs for spread elements, not just property assignments: + // var k = { a: 1, get b() { l = { z: 9 }; return 2; } }; + // var l = { c: 3 }; + // var o = { ...k, ...l }; + // // expected: { a: 1, b: 2, z: 9 } + // If we translate the above to `__assign({}, k, l)`, the `l` will evaluate before `k` is spread and we + // end up with `{ a: 1, b: 2, c: 3 }` + var objects = chunkObjectLiteralElements(node.properties); + if (objects.length && objects[0].kind !== 193 /* ObjectLiteralExpression */) { + objects.unshift(ts.createObjectLiteral()); + } + var expression = objects[0]; + if (objects.length > 1) { + for (var i = 1; i < objects.length; i++) { + expression = createAssignHelper(context, [expression, objects[i]]); + } + return expression; + } + else { + return createAssignHelper(context, objects); + } + } + return ts.visitEachChild(node, visitor, context); + } + function visitExpressionStatement(node) { + return ts.visitEachChild(node, visitorNoDestructuringValue, context); + } + function visitParenthesizedExpression(node, noDestructuringValue) { + return ts.visitEachChild(node, noDestructuringValue ? visitorNoDestructuringValue : visitor, context); + } + function visitSourceFile(node) { + var ancestorFacts = enterSubtree(2 /* SourceFileExcludes */, ts.isEffectiveStrictModeSourceFile(node, compilerOptions) ? + 0 /* StrictModeSourceFileIncludes */ : + 1 /* SourceFileIncludes */); + exportedVariableStatement = false; + var visited = ts.visitEachChild(node, visitor, context); + var statement = ts.concatenate(visited.statements, taggedTemplateStringDeclarations && [ + ts.createVariableStatement(/*modifiers*/ undefined, ts.createVariableDeclarationList(taggedTemplateStringDeclarations)) + ]); + var result = ts.updateSourceFileNode(visited, ts.setTextRange(ts.createNodeArray(statement), node.statements)); + exitSubtree(ancestorFacts); + return result; + } + function visitTaggedTemplateExpression(node) { + return ts.processTaggedTemplateExpression(context, node, visitor, currentSourceFile, recordTaggedTemplateString, ts.ProcessLevel.LiftRestriction); + } + /** + * Visits a BinaryExpression that contains a destructuring assignment. + * + * @param node A BinaryExpression node. + */ + function visitBinaryExpression(node, noDestructuringValue) { + if (ts.isDestructuringAssignment(node) && node.left.transformFlags & 16384 /* ContainsObjectRestOrSpread */) { + return ts.flattenDestructuringAssignment(node, visitor, context, 1 /* ObjectRest */, !noDestructuringValue); + } + else if (node.operatorToken.kind === 27 /* CommaToken */) { + return ts.updateBinary(node, ts.visitNode(node.left, visitorNoDestructuringValue, ts.isExpression), ts.visitNode(node.right, noDestructuringValue ? visitorNoDestructuringValue : visitor, ts.isExpression)); + } + return ts.visitEachChild(node, visitor, context); + } + function visitCatchClause(node) { + if (node.variableDeclaration && + ts.isBindingPattern(node.variableDeclaration.name) && + node.variableDeclaration.name.transformFlags & 16384 /* ContainsObjectRestOrSpread */) { + var name = ts.getGeneratedNameForNode(node.variableDeclaration.name); + var updatedDecl = ts.updateVariableDeclaration(node.variableDeclaration, node.variableDeclaration.name, /*type*/ undefined, name); + var visitedBindings = ts.flattenDestructuringBinding(updatedDecl, visitor, context, 1 /* ObjectRest */); + var block = ts.visitNode(node.block, visitor, ts.isBlock); + if (ts.some(visitedBindings)) { + block = ts.updateBlock(block, __spreadArrays([ + ts.createVariableStatement(/*modifiers*/ undefined, visitedBindings) + ], block.statements)); + } + return ts.updateCatchClause(node, ts.updateVariableDeclaration(node.variableDeclaration, name, /*type*/ undefined, /*initializer*/ undefined), block); + } + return ts.visitEachChild(node, visitor, context); + } + function visitVariableStatement(node) { + if (ts.hasModifier(node, 1 /* Export */)) { + var savedExportedVariableStatement = exportedVariableStatement; + exportedVariableStatement = true; + var visited = ts.visitEachChild(node, visitor, context); + exportedVariableStatement = savedExportedVariableStatement; + return visited; + } + return ts.visitEachChild(node, visitor, context); + } + /** + * Visits a VariableDeclaration node with a binding pattern. + * + * @param node A VariableDeclaration node. + */ + function visitVariableDeclaration(node) { + if (exportedVariableStatement) { + var savedExportedVariableStatement = exportedVariableStatement; + exportedVariableStatement = false; + var visited = visitVariableDeclarationWorker(node, /*exportedVariableStatement*/ true); + exportedVariableStatement = savedExportedVariableStatement; + return visited; + } + return visitVariableDeclarationWorker(node, /*exportedVariableStatement*/ false); + } + function visitVariableDeclarationWorker(node, exportedVariableStatement) { + // If we are here it is because the name contains a binding pattern with a rest somewhere in it. + if (ts.isBindingPattern(node.name) && node.name.transformFlags & 16384 /* ContainsObjectRestOrSpread */) { + return ts.flattenDestructuringBinding(node, visitor, context, 1 /* ObjectRest */, + /*rval*/ undefined, exportedVariableStatement); + } + return ts.visitEachChild(node, visitor, context); + } + function visitForStatement(node) { + return ts.updateFor(node, ts.visitNode(node.initializer, visitorNoDestructuringValue, ts.isForInitializer), ts.visitNode(node.condition, visitor, ts.isExpression), ts.visitNode(node.incrementor, visitor, ts.isExpression), ts.visitNode(node.statement, visitor, ts.isStatement)); + } + function visitVoidExpression(node) { + return ts.visitEachChild(node, visitorNoDestructuringValue, context); + } + /** + * Visits a ForOfStatement and converts it into a ES2015-compatible ForOfStatement. + * + * @param node A ForOfStatement. + */ + function visitForOfStatement(node, outermostLabeledStatement) { + var ancestorFacts = enterSubtree(0 /* IterationStatementExcludes */, 2 /* IterationStatementIncludes */); + if (node.initializer.transformFlags & 16384 /* ContainsObjectRestOrSpread */) { + node = transformForOfStatementWithObjectRest(node); + } + var result = node.awaitModifier ? + transformForAwaitOfStatement(node, outermostLabeledStatement, ancestorFacts) : + ts.restoreEnclosingLabel(ts.visitEachChild(node, visitor, context), outermostLabeledStatement); + exitSubtree(ancestorFacts); + return result; + } + function transformForOfStatementWithObjectRest(node) { + var initializerWithoutParens = ts.skipParentheses(node.initializer); + if (ts.isVariableDeclarationList(initializerWithoutParens) || ts.isAssignmentPattern(initializerWithoutParens)) { + var bodyLocation = void 0; + var statementsLocation = void 0; + var temp = ts.createTempVariable(/*recordTempVariable*/ undefined); + var statements = [ts.createForOfBindingStatement(initializerWithoutParens, temp)]; + if (ts.isBlock(node.statement)) { + ts.addRange(statements, node.statement.statements); + bodyLocation = node.statement; + statementsLocation = node.statement.statements; + } + else if (node.statement) { + ts.append(statements, node.statement); + bodyLocation = node.statement; + statementsLocation = node.statement; + } + return ts.updateForOf(node, node.awaitModifier, ts.setTextRange(ts.createVariableDeclarationList([ + ts.setTextRange(ts.createVariableDeclaration(temp), node.initializer) + ], 1 /* Let */), node.initializer), node.expression, ts.setTextRange(ts.createBlock(ts.setTextRange(ts.createNodeArray(statements), statementsLocation), + /*multiLine*/ true), bodyLocation)); + } + return node; + } + function convertForOfStatementHead(node, boundValue) { + var binding = ts.createForOfBindingStatement(node.initializer, boundValue); + var bodyLocation; + var statementsLocation; + var statements = [ts.visitNode(binding, visitor, ts.isStatement)]; + var statement = ts.visitNode(node.statement, visitor, ts.isStatement); + if (ts.isBlock(statement)) { + ts.addRange(statements, statement.statements); + bodyLocation = statement; + statementsLocation = statement.statements; + } + else { + statements.push(statement); + } + return ts.setEmitFlags(ts.setTextRange(ts.createBlock(ts.setTextRange(ts.createNodeArray(statements), statementsLocation), + /*multiLine*/ true), bodyLocation), 48 /* NoSourceMap */ | 384 /* NoTokenSourceMaps */); + } + function createDownlevelAwait(expression) { + return enclosingFunctionFlags & 1 /* Generator */ + ? ts.createYield(/*asteriskToken*/ undefined, createAwaitHelper(context, expression)) + : ts.createAwait(expression); + } + function transformForAwaitOfStatement(node, outermostLabeledStatement, ancestorFacts) { + var expression = ts.visitNode(node.expression, visitor, ts.isExpression); + var iterator = ts.isIdentifier(expression) ? ts.getGeneratedNameForNode(expression) : ts.createTempVariable(/*recordTempVariable*/ undefined); + var result = ts.isIdentifier(expression) ? ts.getGeneratedNameForNode(iterator) : ts.createTempVariable(/*recordTempVariable*/ undefined); + var errorRecord = ts.createUniqueName("e"); + var catchVariable = ts.getGeneratedNameForNode(errorRecord); + var returnMethod = ts.createTempVariable(/*recordTempVariable*/ undefined); + var callValues = createAsyncValuesHelper(context, expression, /*location*/ node.expression); + var callNext = ts.createCall(ts.createPropertyAccess(iterator, "next"), /*typeArguments*/ undefined, []); + var getDone = ts.createPropertyAccess(result, "done"); + var getValue = ts.createPropertyAccess(result, "value"); + var callReturn = ts.createFunctionCall(returnMethod, iterator, []); + hoistVariableDeclaration(errorRecord); + hoistVariableDeclaration(returnMethod); + // if we are enclosed in an outer loop ensure we reset 'errorRecord' per each iteration + var initializer = ancestorFacts & 2 /* IterationContainer */ ? + ts.inlineExpressions([ts.createAssignment(errorRecord, ts.createVoidZero()), callValues]) : + callValues; + var forStatement = ts.setEmitFlags(ts.setTextRange(ts.createFor( + /*initializer*/ ts.setEmitFlags(ts.setTextRange(ts.createVariableDeclarationList([ + ts.setTextRange(ts.createVariableDeclaration(iterator, /*type*/ undefined, initializer), node.expression), + ts.createVariableDeclaration(result) + ]), node.expression), 2097152 /* NoHoisting */), + /*condition*/ ts.createComma(ts.createAssignment(result, createDownlevelAwait(callNext)), ts.createLogicalNot(getDone)), + /*incrementor*/ undefined, + /*statement*/ convertForOfStatementHead(node, getValue)), + /*location*/ node), 256 /* NoTokenTrailingSourceMaps */); + return ts.createTry(ts.createBlock([ + ts.restoreEnclosingLabel(forStatement, outermostLabeledStatement) + ]), ts.createCatchClause(ts.createVariableDeclaration(catchVariable), ts.setEmitFlags(ts.createBlock([ + ts.createExpressionStatement(ts.createAssignment(errorRecord, ts.createObjectLiteral([ + ts.createPropertyAssignment("error", catchVariable) + ]))) + ]), 1 /* SingleLine */)), ts.createBlock([ + ts.createTry( + /*tryBlock*/ ts.createBlock([ + ts.setEmitFlags(ts.createIf(ts.createLogicalAnd(ts.createLogicalAnd(result, ts.createLogicalNot(getDone)), ts.createAssignment(returnMethod, ts.createPropertyAccess(iterator, "return"))), ts.createExpressionStatement(createDownlevelAwait(callReturn))), 1 /* SingleLine */) + ]), + /*catchClause*/ undefined, + /*finallyBlock*/ ts.setEmitFlags(ts.createBlock([ + ts.setEmitFlags(ts.createIf(errorRecord, ts.createThrow(ts.createPropertyAccess(errorRecord, "error"))), 1 /* SingleLine */) + ]), 1 /* SingleLine */)) + ])); + } + function visitParameter(node) { + if (node.transformFlags & 16384 /* ContainsObjectRestOrSpread */) { + // Binding patterns are converted into a generated name and are + // evaluated inside the function body. + return ts.updateParameter(node, + /*decorators*/ undefined, + /*modifiers*/ undefined, node.dotDotDotToken, ts.getGeneratedNameForNode(node), + /*questionToken*/ undefined, + /*type*/ undefined, ts.visitNode(node.initializer, visitor, ts.isExpression)); + } + return ts.visitEachChild(node, visitor, context); + } + function visitConstructorDeclaration(node) { + var savedEnclosingFunctionFlags = enclosingFunctionFlags; + enclosingFunctionFlags = 0 /* Normal */; + var updated = ts.updateConstructor(node, + /*decorators*/ undefined, node.modifiers, ts.visitParameterList(node.parameters, visitor, context), transformFunctionBody(node)); + enclosingFunctionFlags = savedEnclosingFunctionFlags; + return updated; + } + function visitGetAccessorDeclaration(node) { + var savedEnclosingFunctionFlags = enclosingFunctionFlags; + enclosingFunctionFlags = 0 /* Normal */; + var updated = ts.updateGetAccessor(node, + /*decorators*/ undefined, node.modifiers, ts.visitNode(node.name, visitor, ts.isPropertyName), ts.visitParameterList(node.parameters, visitor, context), + /*type*/ undefined, transformFunctionBody(node)); + enclosingFunctionFlags = savedEnclosingFunctionFlags; + return updated; + } + function visitSetAccessorDeclaration(node) { + var savedEnclosingFunctionFlags = enclosingFunctionFlags; + enclosingFunctionFlags = 0 /* Normal */; + var updated = ts.updateSetAccessor(node, + /*decorators*/ undefined, node.modifiers, ts.visitNode(node.name, visitor, ts.isPropertyName), ts.visitParameterList(node.parameters, visitor, context), transformFunctionBody(node)); + enclosingFunctionFlags = savedEnclosingFunctionFlags; + return updated; + } + function visitMethodDeclaration(node) { + var savedEnclosingFunctionFlags = enclosingFunctionFlags; + enclosingFunctionFlags = ts.getFunctionFlags(node); + var updated = ts.updateMethod(node, + /*decorators*/ undefined, enclosingFunctionFlags & 1 /* Generator */ + ? ts.visitNodes(node.modifiers, visitorNoAsyncModifier, ts.isModifier) + : node.modifiers, enclosingFunctionFlags & 2 /* Async */ + ? undefined + : node.asteriskToken, ts.visitNode(node.name, visitor, ts.isPropertyName), ts.visitNode(/*questionToken*/ undefined, visitor, ts.isToken), + /*typeParameters*/ undefined, ts.visitParameterList(node.parameters, visitor, context), + /*type*/ undefined, enclosingFunctionFlags & 2 /* Async */ && enclosingFunctionFlags & 1 /* Generator */ + ? transformAsyncGeneratorFunctionBody(node) + : transformFunctionBody(node)); + enclosingFunctionFlags = savedEnclosingFunctionFlags; + return updated; + } + function visitFunctionDeclaration(node) { + var savedEnclosingFunctionFlags = enclosingFunctionFlags; + enclosingFunctionFlags = ts.getFunctionFlags(node); + var updated = ts.updateFunctionDeclaration(node, + /*decorators*/ undefined, enclosingFunctionFlags & 1 /* Generator */ + ? ts.visitNodes(node.modifiers, visitorNoAsyncModifier, ts.isModifier) + : node.modifiers, enclosingFunctionFlags & 2 /* Async */ + ? undefined + : node.asteriskToken, node.name, + /*typeParameters*/ undefined, ts.visitParameterList(node.parameters, visitor, context), + /*type*/ undefined, enclosingFunctionFlags & 2 /* Async */ && enclosingFunctionFlags & 1 /* Generator */ + ? transformAsyncGeneratorFunctionBody(node) + : transformFunctionBody(node)); + enclosingFunctionFlags = savedEnclosingFunctionFlags; + return updated; + } + function visitArrowFunction(node) { + var savedEnclosingFunctionFlags = enclosingFunctionFlags; + enclosingFunctionFlags = ts.getFunctionFlags(node); + var updated = ts.updateArrowFunction(node, node.modifiers, + /*typeParameters*/ undefined, ts.visitParameterList(node.parameters, visitor, context), + /*type*/ undefined, node.equalsGreaterThanToken, transformFunctionBody(node)); + enclosingFunctionFlags = savedEnclosingFunctionFlags; + return updated; + } + function visitFunctionExpression(node) { + var savedEnclosingFunctionFlags = enclosingFunctionFlags; + enclosingFunctionFlags = ts.getFunctionFlags(node); + var updated = ts.updateFunctionExpression(node, enclosingFunctionFlags & 1 /* Generator */ + ? ts.visitNodes(node.modifiers, visitorNoAsyncModifier, ts.isModifier) + : node.modifiers, enclosingFunctionFlags & 2 /* Async */ + ? undefined + : node.asteriskToken, node.name, + /*typeParameters*/ undefined, ts.visitParameterList(node.parameters, visitor, context), + /*type*/ undefined, enclosingFunctionFlags & 2 /* Async */ && enclosingFunctionFlags & 1 /* Generator */ + ? transformAsyncGeneratorFunctionBody(node) + : transformFunctionBody(node)); + enclosingFunctionFlags = savedEnclosingFunctionFlags; + return updated; + } + function transformAsyncGeneratorFunctionBody(node) { + resumeLexicalEnvironment(); + var statements = []; + var statementOffset = ts.addPrologue(statements, node.body.statements, /*ensureUseStrict*/ false, visitor); + appendObjectRestAssignmentsIfNeeded(statements, node); + var savedCapturedSuperProperties = capturedSuperProperties; + var savedHasSuperElementAccess = hasSuperElementAccess; + capturedSuperProperties = ts.createUnderscoreEscapedMap(); + hasSuperElementAccess = false; + var returnStatement = ts.createReturn(createAsyncGeneratorHelper(context, ts.createFunctionExpression( + /*modifiers*/ undefined, ts.createToken(41 /* AsteriskToken */), node.name && ts.getGeneratedNameForNode(node.name), + /*typeParameters*/ undefined, + /*parameters*/ [], + /*type*/ undefined, ts.updateBlock(node.body, ts.visitLexicalEnvironment(node.body.statements, visitor, context, statementOffset))), !!(hierarchyFacts & 1 /* HasLexicalThis */))); + // Minor optimization, emit `_super` helper to capture `super` access in an arrow. + // This step isn't needed if we eventually transform this to ES5. + var emitSuperHelpers = languageVersion >= 2 /* ES2015 */ && resolver.getNodeCheckFlags(node) & (4096 /* AsyncMethodWithSuperBinding */ | 2048 /* AsyncMethodWithSuper */); + if (emitSuperHelpers) { + enableSubstitutionForAsyncMethodsWithSuper(); + var variableStatement = ts.createSuperAccessVariableStatement(resolver, node, capturedSuperProperties); + substitutedSuperAccessors[ts.getNodeId(variableStatement)] = true; + ts.insertStatementsAfterStandardPrologue(statements, [variableStatement]); + } + statements.push(returnStatement); + ts.insertStatementsAfterStandardPrologue(statements, endLexicalEnvironment()); + var block = ts.updateBlock(node.body, statements); + if (emitSuperHelpers && hasSuperElementAccess) { + if (resolver.getNodeCheckFlags(node) & 4096 /* AsyncMethodWithSuperBinding */) { + ts.addEmitHelper(block, ts.advancedAsyncSuperHelper); + } + else if (resolver.getNodeCheckFlags(node) & 2048 /* AsyncMethodWithSuper */) { + ts.addEmitHelper(block, ts.asyncSuperHelper); + } + } + capturedSuperProperties = savedCapturedSuperProperties; + hasSuperElementAccess = savedHasSuperElementAccess; + return block; + } + function transformFunctionBody(node) { + resumeLexicalEnvironment(); + var statementOffset = 0; + var statements = []; + var body = ts.visitNode(node.body, visitor, ts.isConciseBody); + if (ts.isBlock(body)) { + statementOffset = ts.addPrologue(statements, body.statements, /*ensureUseStrict*/ false, visitor); + } + ts.addRange(statements, appendObjectRestAssignmentsIfNeeded(/*statements*/ undefined, node)); + var leadingStatements = endLexicalEnvironment(); + if (statementOffset > 0 || ts.some(statements) || ts.some(leadingStatements)) { + var block = ts.convertToFunctionBody(body, /*multiLine*/ true); + ts.insertStatementsAfterStandardPrologue(statements, leadingStatements); + ts.addRange(statements, block.statements.slice(statementOffset)); + return ts.updateBlock(block, ts.setTextRange(ts.createNodeArray(statements), block.statements)); + } + return body; + } + function appendObjectRestAssignmentsIfNeeded(statements, node) { + for (var _i = 0, _a = node.parameters; _i < _a.length; _i++) { + var parameter = _a[_i]; + if (parameter.transformFlags & 16384 /* ContainsObjectRestOrSpread */) { + var temp = ts.getGeneratedNameForNode(parameter); + var declarations = ts.flattenDestructuringBinding(parameter, visitor, context, 1 /* ObjectRest */, temp, + /*doNotRecordTempVariablesInLine*/ false, + /*skipInitializer*/ true); + if (ts.some(declarations)) { + var statement = ts.createVariableStatement( + /*modifiers*/ undefined, ts.createVariableDeclarationList(declarations)); + ts.setEmitFlags(statement, 1048576 /* CustomPrologue */); + statements = ts.append(statements, statement); + } + } + } + return statements; + } + function enableSubstitutionForAsyncMethodsWithSuper() { + if ((enabledSubstitutions & 1 /* AsyncMethodsWithSuper */) === 0) { + enabledSubstitutions |= 1 /* AsyncMethodsWithSuper */; + // We need to enable substitutions for call, property access, and element access + // if we need to rewrite super calls. + context.enableSubstitution(196 /* CallExpression */); + context.enableSubstitution(194 /* PropertyAccessExpression */); + context.enableSubstitution(195 /* ElementAccessExpression */); + // We need to be notified when entering and exiting declarations that bind super. + context.enableEmitNotification(245 /* ClassDeclaration */); + context.enableEmitNotification(161 /* MethodDeclaration */); + context.enableEmitNotification(163 /* GetAccessor */); + context.enableEmitNotification(164 /* SetAccessor */); + context.enableEmitNotification(162 /* Constructor */); + // We need to be notified when entering the generated accessor arrow functions. + context.enableEmitNotification(225 /* VariableStatement */); + } + } + /** + * Called by the printer just before a node is printed. + * + * @param hint A hint as to the intended usage of the node. + * @param node The node to be printed. + * @param emitCallback The callback used to emit the node. + */ + function onEmitNode(hint, node, emitCallback) { + // If we need to support substitutions for `super` in an async method, + // we should track it here. + if (enabledSubstitutions & 1 /* AsyncMethodsWithSuper */ && isSuperContainer(node)) { + var superContainerFlags = resolver.getNodeCheckFlags(node) & (2048 /* AsyncMethodWithSuper */ | 4096 /* AsyncMethodWithSuperBinding */); + if (superContainerFlags !== enclosingSuperContainerFlags) { + var savedEnclosingSuperContainerFlags = enclosingSuperContainerFlags; + enclosingSuperContainerFlags = superContainerFlags; + previousOnEmitNode(hint, node, emitCallback); + enclosingSuperContainerFlags = savedEnclosingSuperContainerFlags; + return; + } + } + // Disable substitution in the generated super accessor itself. + else if (enabledSubstitutions && substitutedSuperAccessors[ts.getNodeId(node)]) { + var savedEnclosingSuperContainerFlags = enclosingSuperContainerFlags; + enclosingSuperContainerFlags = 0; + previousOnEmitNode(hint, node, emitCallback); + enclosingSuperContainerFlags = savedEnclosingSuperContainerFlags; + return; + } + previousOnEmitNode(hint, node, emitCallback); + } + /** + * Hooks node substitutions. + * + * @param hint The context for the emitter. + * @param node The node to substitute. + */ + function onSubstituteNode(hint, node) { + node = previousOnSubstituteNode(hint, node); + if (hint === 1 /* Expression */ && enclosingSuperContainerFlags) { + return substituteExpression(node); + } + return node; + } + function substituteExpression(node) { + switch (node.kind) { + case 194 /* PropertyAccessExpression */: + return substitutePropertyAccessExpression(node); + case 195 /* ElementAccessExpression */: + return substituteElementAccessExpression(node); + case 196 /* CallExpression */: + return substituteCallExpression(node); + } + return node; + } + function substitutePropertyAccessExpression(node) { + if (node.expression.kind === 102 /* SuperKeyword */) { + return ts.setTextRange(ts.createPropertyAccess(ts.createFileLevelUniqueName("_super"), node.name), node); + } + return node; + } + function substituteElementAccessExpression(node) { + if (node.expression.kind === 102 /* SuperKeyword */) { + return createSuperElementAccessInAsyncMethod(node.argumentExpression, node); + } + return node; + } + function substituteCallExpression(node) { + var expression = node.expression; + if (ts.isSuperProperty(expression)) { + var argumentExpression = ts.isPropertyAccessExpression(expression) + ? substitutePropertyAccessExpression(expression) + : substituteElementAccessExpression(expression); + return ts.createCall(ts.createPropertyAccess(argumentExpression, "call"), + /*typeArguments*/ undefined, __spreadArrays([ + ts.createThis() + ], node.arguments)); + } + return node; + } + function isSuperContainer(node) { + var kind = node.kind; + return kind === 245 /* ClassDeclaration */ + || kind === 162 /* Constructor */ + || kind === 161 /* MethodDeclaration */ + || kind === 163 /* GetAccessor */ + || kind === 164 /* SetAccessor */; + } + function createSuperElementAccessInAsyncMethod(argumentExpression, location) { + if (enclosingSuperContainerFlags & 4096 /* AsyncMethodWithSuperBinding */) { + return ts.setTextRange(ts.createPropertyAccess(ts.createCall(ts.createIdentifier("_superIndex"), + /*typeArguments*/ undefined, [argumentExpression]), "value"), location); + } + else { + return ts.setTextRange(ts.createCall(ts.createIdentifier("_superIndex"), + /*typeArguments*/ undefined, [argumentExpression]), location); + } + } + } + ts.transformES2018 = transformES2018; + ts.assignHelper = { + name: "typescript:assign", + importName: "__assign", + scoped: false, + priority: 1, + text: "\n var __assign = (this && this.__assign) || function () {\n __assign = Object.assign || function(t) {\n for (var s, i = 1, n = arguments.length; i < n; i++) {\n s = arguments[i];\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))\n t[p] = s[p];\n }\n return t;\n };\n return __assign.apply(this, arguments);\n };" + }; + function createAssignHelper(context, attributesSegments) { + if (context.getCompilerOptions().target >= 2 /* ES2015 */) { + return ts.createCall(ts.createPropertyAccess(ts.createIdentifier("Object"), "assign"), /*typeArguments*/ undefined, attributesSegments); + } + context.requestEmitHelper(ts.assignHelper); + return ts.createCall(ts.getUnscopedHelperName("__assign"), + /*typeArguments*/ undefined, attributesSegments); + } + ts.createAssignHelper = createAssignHelper; + ts.awaitHelper = { + name: "typescript:await", + importName: "__await", + scoped: false, + text: "\n var __await = (this && this.__await) || function (v) { return this instanceof __await ? (this.v = v, this) : new __await(v); }" + }; + function createAwaitHelper(context, expression) { + context.requestEmitHelper(ts.awaitHelper); + return ts.createCall(ts.getUnscopedHelperName("__await"), /*typeArguments*/ undefined, [expression]); + } + ts.asyncGeneratorHelper = { + name: "typescript:asyncGenerator", + importName: "__asyncGenerator", + scoped: false, + dependencies: [ts.awaitHelper], + text: "\n var __asyncGenerator = (this && this.__asyncGenerator) || function (thisArg, _arguments, generator) {\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\n var g = generator.apply(thisArg, _arguments || []), i, q = [];\n return i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i;\n function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }\n function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\n function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\n function fulfill(value) { resume(\"next\", value); }\n function reject(value) { resume(\"throw\", value); }\n function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\n };" + }; + function createAsyncGeneratorHelper(context, generatorFunc, hasLexicalThis) { + context.requestEmitHelper(ts.asyncGeneratorHelper); + // Mark this node as originally an async function + (generatorFunc.emitNode || (generatorFunc.emitNode = {})).flags |= 262144 /* AsyncFunctionBody */ | 524288 /* ReuseTempVariableScope */; + return ts.createCall(ts.getUnscopedHelperName("__asyncGenerator"), + /*typeArguments*/ undefined, [ + hasLexicalThis ? ts.createThis() : ts.createVoidZero(), + ts.createIdentifier("arguments"), + generatorFunc + ]); + } + ts.asyncDelegator = { + name: "typescript:asyncDelegator", + importName: "__asyncDelegator", + scoped: false, + dependencies: [ts.awaitHelper], + text: "\n var __asyncDelegator = (this && this.__asyncDelegator) || function (o) {\n var i, p;\n return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\n function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: n === \"return\" } : f ? f(v) : v; } : f; }\n };" + }; + function createAsyncDelegatorHelper(context, expression, location) { + context.requestEmitHelper(ts.asyncDelegator); + return ts.setTextRange(ts.createCall(ts.getUnscopedHelperName("__asyncDelegator"), + /*typeArguments*/ undefined, [expression]), location); + } + ts.asyncValues = { + name: "typescript:asyncValues", + importName: "__asyncValues", + scoped: false, + text: "\n var __asyncValues = (this && this.__asyncValues) || function (o) {\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\n var m = o[Symbol.asyncIterator], i;\n return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i);\n function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\n function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\n };" + }; + function createAsyncValuesHelper(context, expression, location) { + context.requestEmitHelper(ts.asyncValues); + return ts.setTextRange(ts.createCall(ts.getUnscopedHelperName("__asyncValues"), + /*typeArguments*/ undefined, [expression]), location); + } +})(ts || (ts = {})); +/*@internal*/ +var ts; +(function (ts) { + function transformES2019(context) { + return ts.chainBundle(transformSourceFile); + function transformSourceFile(node) { + if (node.isDeclarationFile) { + return node; + } + return ts.visitEachChild(node, visitor, context); + } + function visitor(node) { + if ((node.transformFlags & 16 /* ContainsES2019 */) === 0) { + return node; + } + switch (node.kind) { + case 280 /* CatchClause */: + return visitCatchClause(node); + default: + return ts.visitEachChild(node, visitor, context); + } + } + function visitCatchClause(node) { + if (!node.variableDeclaration) { + return ts.updateCatchClause(node, ts.createVariableDeclaration(ts.createTempVariable(/*recordTempVariable*/ undefined)), ts.visitNode(node.block, visitor, ts.isBlock)); + } + return ts.visitEachChild(node, visitor, context); + } + } + ts.transformES2019 = transformES2019; +})(ts || (ts = {})); +/*@internal*/ +var ts; +(function (ts) { + function transformES2020(context) { + var hoistVariableDeclaration = context.hoistVariableDeclaration; + return ts.chainBundle(transformSourceFile); + function transformSourceFile(node) { + if (node.isDeclarationFile) { + return node; + } + return ts.visitEachChild(node, visitor, context); + } + function visitor(node) { + if ((node.transformFlags & 8 /* ContainsES2020 */) === 0) { + return node; + } + switch (node.kind) { + case 194 /* PropertyAccessExpression */: + case 195 /* ElementAccessExpression */: + case 196 /* CallExpression */: + if (node.flags & 32 /* OptionalChain */) { + var updated = visitOptionalExpression(node, /*captureThisArg*/ false, /*isDelete*/ false); + ts.Debug.assertNotNode(updated, ts.isSyntheticReference); + return updated; + } + return ts.visitEachChild(node, visitor, context); + case 209 /* BinaryExpression */: + if (node.operatorToken.kind === 60 /* QuestionQuestionToken */) { + return transformNullishCoalescingExpression(node); + } + return ts.visitEachChild(node, visitor, context); + case 203 /* DeleteExpression */: + return visitDeleteExpression(node); + default: + return ts.visitEachChild(node, visitor, context); + } + } + function flattenChain(chain) { + ts.Debug.assertNotNode(chain, ts.isNonNullChain); + var links = [chain]; + while (!chain.questionDotToken && !ts.isTaggedTemplateExpression(chain)) { + chain = ts.cast(ts.skipPartiallyEmittedExpressions(chain.expression), ts.isOptionalChain); + ts.Debug.assertNotNode(chain, ts.isNonNullChain); + links.unshift(chain); + } + return { expression: chain.expression, chain: links }; + } + function visitNonOptionalParenthesizedExpression(node, captureThisArg, isDelete) { + var expression = visitNonOptionalExpression(node.expression, captureThisArg, isDelete); + if (ts.isSyntheticReference(expression)) { + // `(a.b)` -> { expression `((_a = a).b)`, thisArg: `_a` } + // `(a[b])` -> { expression `((_a = a)[b])`, thisArg: `_a` } + return ts.createSyntheticReferenceExpression(ts.updateParen(node, expression.expression), expression.thisArg); + } + return ts.updateParen(node, expression); + } + function visitNonOptionalPropertyOrElementAccessExpression(node, captureThisArg, isDelete) { + if (ts.isOptionalChain(node)) { + // If `node` is an optional chain, then it is the outermost chain of an optional expression. + return visitOptionalExpression(node, captureThisArg, isDelete); + } + var expression = ts.visitNode(node.expression, visitor, ts.isExpression); + ts.Debug.assertNotNode(expression, ts.isSyntheticReference); + var thisArg; + if (captureThisArg) { + if (shouldCaptureInTempVariable(expression)) { + thisArg = ts.createTempVariable(hoistVariableDeclaration); + expression = ts.createAssignment(thisArg, expression); + // if (inParameterInitializer) tempVariableInParameter = true; + } + else { + thisArg = expression; + } + } + expression = node.kind === 194 /* PropertyAccessExpression */ + ? ts.updatePropertyAccess(node, expression, ts.visitNode(node.name, visitor, ts.isIdentifier)) + : ts.updateElementAccess(node, expression, ts.visitNode(node.argumentExpression, visitor, ts.isExpression)); + return thisArg ? ts.createSyntheticReferenceExpression(expression, thisArg) : expression; + } + function visitNonOptionalCallExpression(node, captureThisArg) { + if (ts.isOptionalChain(node)) { + // If `node` is an optional chain, then it is the outermost chain of an optional expression. + return visitOptionalExpression(node, captureThisArg, /*isDelete*/ false); + } + return ts.visitEachChild(node, visitor, context); + } + function visitNonOptionalExpression(node, captureThisArg, isDelete) { + switch (node.kind) { + case 200 /* ParenthesizedExpression */: return visitNonOptionalParenthesizedExpression(node, captureThisArg, isDelete); + case 194 /* PropertyAccessExpression */: + case 195 /* ElementAccessExpression */: return visitNonOptionalPropertyOrElementAccessExpression(node, captureThisArg, isDelete); + case 196 /* CallExpression */: return visitNonOptionalCallExpression(node, captureThisArg); + default: return ts.visitNode(node, visitor, ts.isExpression); + } + } + function visitOptionalExpression(node, captureThisArg, isDelete) { + var _a = flattenChain(node), expression = _a.expression, chain = _a.chain; + var left = visitNonOptionalExpression(expression, ts.isCallChain(chain[0]), /*isDelete*/ false); + var leftThisArg = ts.isSyntheticReference(left) ? left.thisArg : undefined; + var leftExpression = ts.isSyntheticReference(left) ? left.expression : left; + var capturedLeft = leftExpression; + if (shouldCaptureInTempVariable(leftExpression)) { + capturedLeft = ts.createTempVariable(hoistVariableDeclaration); + leftExpression = ts.createAssignment(capturedLeft, leftExpression); + // if (inParameterInitializer) tempVariableInParameter = true; + } + var rightExpression = capturedLeft; + var thisArg; + for (var i = 0; i < chain.length; i++) { + var segment = chain[i]; + switch (segment.kind) { + case 194 /* PropertyAccessExpression */: + case 195 /* ElementAccessExpression */: + if (i === chain.length - 1 && captureThisArg) { + if (shouldCaptureInTempVariable(rightExpression)) { + thisArg = ts.createTempVariable(hoistVariableDeclaration); + rightExpression = ts.createAssignment(thisArg, rightExpression); + // if (inParameterInitializer) tempVariableInParameter = true; + } + else { + thisArg = rightExpression; + } + } + rightExpression = segment.kind === 194 /* PropertyAccessExpression */ + ? ts.createPropertyAccess(rightExpression, ts.visitNode(segment.name, visitor, ts.isIdentifier)) + : ts.createElementAccess(rightExpression, ts.visitNode(segment.argumentExpression, visitor, ts.isExpression)); + break; + case 196 /* CallExpression */: + if (i === 0 && leftThisArg) { + rightExpression = ts.createFunctionCall(rightExpression, leftThisArg.kind === 102 /* SuperKeyword */ ? ts.createThis() : leftThisArg, ts.visitNodes(segment.arguments, visitor, ts.isExpression)); + } + else { + rightExpression = ts.createCall(rightExpression, + /*typeArguments*/ undefined, ts.visitNodes(segment.arguments, visitor, ts.isExpression)); + } + break; + } + ts.setOriginalNode(rightExpression, segment); + } + var target = isDelete + ? ts.createConditional(createNotNullCondition(leftExpression, capturedLeft, /*invert*/ true), ts.createTrue(), ts.createDelete(rightExpression)) + : ts.createConditional(createNotNullCondition(leftExpression, capturedLeft, /*invert*/ true), ts.createVoidZero(), rightExpression); + return thisArg ? ts.createSyntheticReferenceExpression(target, thisArg) : target; + } + function createNotNullCondition(left, right, invert) { + return ts.createBinary(ts.createBinary(left, ts.createToken(invert ? 36 /* EqualsEqualsEqualsToken */ : 37 /* ExclamationEqualsEqualsToken */), ts.createNull()), ts.createToken(invert ? 56 /* BarBarToken */ : 55 /* AmpersandAmpersandToken */), ts.createBinary(right, ts.createToken(invert ? 36 /* EqualsEqualsEqualsToken */ : 37 /* ExclamationEqualsEqualsToken */), ts.createVoidZero())); + } + function transformNullishCoalescingExpression(node) { + var left = ts.visitNode(node.left, visitor, ts.isExpression); + var right = left; + if (shouldCaptureInTempVariable(left)) { + right = ts.createTempVariable(hoistVariableDeclaration); + left = ts.createAssignment(right, left); + // if (inParameterInitializer) tempVariableInParameter = true; + } + return ts.createConditional(createNotNullCondition(left, right), right, ts.visitNode(node.right, visitor, ts.isExpression)); + } + function shouldCaptureInTempVariable(expression) { + // don't capture identifiers and `this` in a temporary variable + // `super` cannot be captured as it's no real variable + return !ts.isIdentifier(expression) && + expression.kind !== 104 /* ThisKeyword */ && + expression.kind !== 102 /* SuperKeyword */; + } + function visitDeleteExpression(node) { + return ts.isOptionalChain(ts.skipParentheses(node.expression)) + ? ts.setOriginalNode(visitNonOptionalExpression(node.expression, /*captureThisArg*/ false, /*isDelete*/ true), node) + : ts.updateDelete(node, ts.visitNode(node.expression, visitor, ts.isExpression)); + } + } + ts.transformES2020 = transformES2020; +})(ts || (ts = {})); +/*@internal*/ +var ts; +(function (ts) { + function transformESNext(context) { + return ts.chainBundle(transformSourceFile); + function transformSourceFile(node) { + if (node.isDeclarationFile) { + return node; + } + return ts.visitEachChild(node, visitor, context); + } + function visitor(node) { + if ((node.transformFlags & 4 /* ContainsESNext */) === 0) { + return node; + } + switch (node.kind) { + default: + return ts.visitEachChild(node, visitor, context); + } + } + } + ts.transformESNext = transformESNext; +})(ts || (ts = {})); +/*@internal*/ +var ts; +(function (ts) { + function transformJsx(context) { + var compilerOptions = context.getCompilerOptions(); + var currentSourceFile; + return ts.chainBundle(transformSourceFile); + /** + * Transform JSX-specific syntax in a SourceFile. + * + * @param node A SourceFile node. + */ + function transformSourceFile(node) { + if (node.isDeclarationFile) { + return node; + } + currentSourceFile = node; + var visited = ts.visitEachChild(node, visitor, context); + ts.addEmitHelpers(visited, context.readEmitHelpers()); + return visited; + } + function visitor(node) { + if (node.transformFlags & 2 /* ContainsJsx */) { + return visitorWorker(node); + } + else { + return node; + } + } + function visitorWorker(node) { + switch (node.kind) { + case 266 /* JsxElement */: + return visitJsxElement(node, /*isChild*/ false); + case 267 /* JsxSelfClosingElement */: + return visitJsxSelfClosingElement(node, /*isChild*/ false); + case 270 /* JsxFragment */: + return visitJsxFragment(node, /*isChild*/ false); + case 276 /* JsxExpression */: + return visitJsxExpression(node); + default: + return ts.visitEachChild(node, visitor, context); + } + } + function transformJsxChildToExpression(node) { + switch (node.kind) { + case 11 /* JsxText */: + return visitJsxText(node); + case 276 /* JsxExpression */: + return visitJsxExpression(node); + case 266 /* JsxElement */: + return visitJsxElement(node, /*isChild*/ true); + case 267 /* JsxSelfClosingElement */: + return visitJsxSelfClosingElement(node, /*isChild*/ true); + case 270 /* JsxFragment */: + return visitJsxFragment(node, /*isChild*/ true); + default: + return ts.Debug.failBadSyntaxKind(node); + } + } + function visitJsxElement(node, isChild) { + return visitJsxOpeningLikeElement(node.openingElement, node.children, isChild, /*location*/ node); + } + function visitJsxSelfClosingElement(node, isChild) { + return visitJsxOpeningLikeElement(node, /*children*/ undefined, isChild, /*location*/ node); + } + function visitJsxFragment(node, isChild) { + return visitJsxOpeningFragment(node.openingFragment, node.children, isChild, /*location*/ node); + } + function visitJsxOpeningLikeElement(node, children, isChild, location) { + var tagName = getTagName(node); + var objectProperties; + var attrs = node.attributes.properties; + if (attrs.length === 0) { + // When there are no attributes, React wants "null" + objectProperties = ts.createNull(); + } + else { + // Map spans of JsxAttribute nodes into object literals and spans + // of JsxSpreadAttribute nodes into expressions. + var segments = ts.flatten(ts.spanMap(attrs, ts.isJsxSpreadAttribute, function (attrs, isSpread) { return isSpread + ? ts.map(attrs, transformJsxSpreadAttributeToExpression) + : ts.createObjectLiteral(ts.map(attrs, transformJsxAttributeToObjectLiteralElement)); })); + if (ts.isJsxSpreadAttribute(attrs[0])) { + // We must always emit at least one object literal before a spread + // argument. + segments.unshift(ts.createObjectLiteral()); + } + // Either emit one big object literal (no spread attribs), or + // a call to the __assign helper. + objectProperties = ts.singleOrUndefined(segments); + if (!objectProperties) { + objectProperties = ts.createAssignHelper(context, segments); + } + } + var element = ts.createExpressionForJsxElement(context.getEmitResolver().getJsxFactoryEntity(currentSourceFile), compilerOptions.reactNamespace, // TODO: GH#18217 + tagName, objectProperties, ts.mapDefined(children, transformJsxChildToExpression), node, location); + if (isChild) { + ts.startOnNewLine(element); + } + return element; + } + function visitJsxOpeningFragment(node, children, isChild, location) { + var element = ts.createExpressionForJsxFragment(context.getEmitResolver().getJsxFactoryEntity(currentSourceFile), compilerOptions.reactNamespace, // TODO: GH#18217 + ts.mapDefined(children, transformJsxChildToExpression), node, location); + if (isChild) { + ts.startOnNewLine(element); + } + return element; + } + function transformJsxSpreadAttributeToExpression(node) { + return ts.visitNode(node.expression, visitor, ts.isExpression); + } + function transformJsxAttributeToObjectLiteralElement(node) { + var name = getAttributeName(node); + var expression = transformJsxAttributeInitializer(node.initializer); + return ts.createPropertyAssignment(name, expression); + } + function transformJsxAttributeInitializer(node) { + if (node === undefined) { + return ts.createTrue(); + } + else if (node.kind === 10 /* StringLiteral */) { + // Always recreate the literal to escape any escape sequences or newlines which may be in the original jsx string and which + // Need to be escaped to be handled correctly in a normal string + var literal = ts.createLiteral(tryDecodeEntities(node.text) || node.text); + literal.singleQuote = node.singleQuote !== undefined ? node.singleQuote : !ts.isStringDoubleQuoted(node, currentSourceFile); + return ts.setTextRange(literal, node); + } + else if (node.kind === 276 /* JsxExpression */) { + if (node.expression === undefined) { + return ts.createTrue(); + } + return visitJsxExpression(node); + } + else { + return ts.Debug.failBadSyntaxKind(node); + } + } + function visitJsxText(node) { + var fixed = fixupWhitespaceAndDecodeEntities(node.text); + return fixed === undefined ? undefined : ts.createLiteral(fixed); + } + /** + * JSX trims whitespace at the end and beginning of lines, except that the + * start/end of a tag is considered a start/end of a line only if that line is + * on the same line as the closing tag. See examples in + * tests/cases/conformance/jsx/tsxReactEmitWhitespace.tsx + * See also https://www.w3.org/TR/html4/struct/text.html#h-9.1 and https://www.w3.org/TR/CSS2/text.html#white-space-model + * + * An equivalent algorithm would be: + * - If there is only one line, return it. + * - If there is only whitespace (but multiple lines), return `undefined`. + * - Split the text into lines. + * - 'trimRight' the first line, 'trimLeft' the last line, 'trim' middle lines. + * - Decode entities on each line (individually). + * - Remove empty lines and join the rest with " ". + */ + function fixupWhitespaceAndDecodeEntities(text) { + var acc; + // First non-whitespace character on this line. + var firstNonWhitespace = 0; + // Last non-whitespace character on this line. + var lastNonWhitespace = -1; + // These initial values are special because the first line is: + // firstNonWhitespace = 0 to indicate that we want leading whitsepace, + // but lastNonWhitespace = -1 as a special flag to indicate that we *don't* include the line if it's all whitespace. + for (var i = 0; i < text.length; i++) { + var c = text.charCodeAt(i); + if (ts.isLineBreak(c)) { + // If we've seen any non-whitespace characters on this line, add the 'trim' of the line. + // (lastNonWhitespace === -1 is a special flag to detect whether the first line is all whitespace.) + if (firstNonWhitespace !== -1 && lastNonWhitespace !== -1) { + acc = addLineOfJsxText(acc, text.substr(firstNonWhitespace, lastNonWhitespace - firstNonWhitespace + 1)); + } + // Reset firstNonWhitespace for the next line. + // Don't bother to reset lastNonWhitespace because we ignore it if firstNonWhitespace = -1. + firstNonWhitespace = -1; + } + else if (!ts.isWhiteSpaceSingleLine(c)) { + lastNonWhitespace = i; + if (firstNonWhitespace === -1) { + firstNonWhitespace = i; + } + } + } + return firstNonWhitespace !== -1 + // Last line had a non-whitespace character. Emit the 'trimLeft', meaning keep trailing whitespace. + ? addLineOfJsxText(acc, text.substr(firstNonWhitespace)) + // Last line was all whitespace, so ignore it + : acc; + } + function addLineOfJsxText(acc, trimmedLine) { + // We do not escape the string here as that is handled by the printer + // when it emits the literal. We do, however, need to decode JSX entities. + var decoded = decodeEntities(trimmedLine); + return acc === undefined ? decoded : acc + " " + decoded; + } + /** + * Replace entities like " ", "{", and "�" with the characters they encode. + * See https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references + */ + function decodeEntities(text) { + return text.replace(/&((#((\d+)|x([\da-fA-F]+)))|(\w+));/g, function (match, _all, _number, _digits, decimal, hex, word) { + if (decimal) { + return ts.utf16EncodeAsString(parseInt(decimal, 10)); + } + else if (hex) { + return ts.utf16EncodeAsString(parseInt(hex, 16)); + } + else { + var ch = entities.get(word); + // If this is not a valid entity, then just use `match` (replace it with itself, i.e. don't replace) + return ch ? ts.utf16EncodeAsString(ch) : match; + } + }); + } + /** Like `decodeEntities` but returns `undefined` if there were no entities to decode. */ + function tryDecodeEntities(text) { + var decoded = decodeEntities(text); + return decoded === text ? undefined : decoded; + } + function getTagName(node) { + if (node.kind === 266 /* JsxElement */) { + return getTagName(node.openingElement); + } + else { + var name = node.tagName; + if (ts.isIdentifier(name) && ts.isIntrinsicJsxName(name.escapedText)) { + return ts.createLiteral(ts.idText(name)); + } + else { + return ts.createExpressionFromEntityName(name); + } + } + } + /** + * Emit an attribute name, which is quoted if it needs to be quoted. Because + * these emit into an object literal property name, we don't need to be worried + * about keywords, just non-identifier characters + */ + function getAttributeName(node) { + var name = node.name; + var text = ts.idText(name); + if (/^[A-Za-z_]\w*$/.test(text)) { + return name; + } + else { + return ts.createLiteral(text); + } + } + function visitJsxExpression(node) { + return ts.visitNode(node.expression, visitor, ts.isExpression); + } + } + ts.transformJsx = transformJsx; + var entities = ts.createMapFromTemplate({ + quot: 0x0022, + amp: 0x0026, + apos: 0x0027, + lt: 0x003C, + gt: 0x003E, + nbsp: 0x00A0, + iexcl: 0x00A1, + cent: 0x00A2, + pound: 0x00A3, + curren: 0x00A4, + yen: 0x00A5, + brvbar: 0x00A6, + sect: 0x00A7, + uml: 0x00A8, + copy: 0x00A9, + ordf: 0x00AA, + laquo: 0x00AB, + not: 0x00AC, + shy: 0x00AD, + reg: 0x00AE, + macr: 0x00AF, + deg: 0x00B0, + plusmn: 0x00B1, + sup2: 0x00B2, + sup3: 0x00B3, + acute: 0x00B4, + micro: 0x00B5, + para: 0x00B6, + middot: 0x00B7, + cedil: 0x00B8, + sup1: 0x00B9, + ordm: 0x00BA, + raquo: 0x00BB, + frac14: 0x00BC, + frac12: 0x00BD, + frac34: 0x00BE, + iquest: 0x00BF, + Agrave: 0x00C0, + Aacute: 0x00C1, + Acirc: 0x00C2, + Atilde: 0x00C3, + Auml: 0x00C4, + Aring: 0x00C5, + AElig: 0x00C6, + Ccedil: 0x00C7, + Egrave: 0x00C8, + Eacute: 0x00C9, + Ecirc: 0x00CA, + Euml: 0x00CB, + Igrave: 0x00CC, + Iacute: 0x00CD, + Icirc: 0x00CE, + Iuml: 0x00CF, + ETH: 0x00D0, + Ntilde: 0x00D1, + Ograve: 0x00D2, + Oacute: 0x00D3, + Ocirc: 0x00D4, + Otilde: 0x00D5, + Ouml: 0x00D6, + times: 0x00D7, + Oslash: 0x00D8, + Ugrave: 0x00D9, + Uacute: 0x00DA, + Ucirc: 0x00DB, + Uuml: 0x00DC, + Yacute: 0x00DD, + THORN: 0x00DE, + szlig: 0x00DF, + agrave: 0x00E0, + aacute: 0x00E1, + acirc: 0x00E2, + atilde: 0x00E3, + auml: 0x00E4, + aring: 0x00E5, + aelig: 0x00E6, + ccedil: 0x00E7, + egrave: 0x00E8, + eacute: 0x00E9, + ecirc: 0x00EA, + euml: 0x00EB, + igrave: 0x00EC, + iacute: 0x00ED, + icirc: 0x00EE, + iuml: 0x00EF, + eth: 0x00F0, + ntilde: 0x00F1, + ograve: 0x00F2, + oacute: 0x00F3, + ocirc: 0x00F4, + otilde: 0x00F5, + ouml: 0x00F6, + divide: 0x00F7, + oslash: 0x00F8, + ugrave: 0x00F9, + uacute: 0x00FA, + ucirc: 0x00FB, + uuml: 0x00FC, + yacute: 0x00FD, + thorn: 0x00FE, + yuml: 0x00FF, + OElig: 0x0152, + oelig: 0x0153, + Scaron: 0x0160, + scaron: 0x0161, + Yuml: 0x0178, + fnof: 0x0192, + circ: 0x02C6, + tilde: 0x02DC, + Alpha: 0x0391, + Beta: 0x0392, + Gamma: 0x0393, + Delta: 0x0394, + Epsilon: 0x0395, + Zeta: 0x0396, + Eta: 0x0397, + Theta: 0x0398, + Iota: 0x0399, + Kappa: 0x039A, + Lambda: 0x039B, + Mu: 0x039C, + Nu: 0x039D, + Xi: 0x039E, + Omicron: 0x039F, + Pi: 0x03A0, + Rho: 0x03A1, + Sigma: 0x03A3, + Tau: 0x03A4, + Upsilon: 0x03A5, + Phi: 0x03A6, + Chi: 0x03A7, + Psi: 0x03A8, + Omega: 0x03A9, + alpha: 0x03B1, + beta: 0x03B2, + gamma: 0x03B3, + delta: 0x03B4, + epsilon: 0x03B5, + zeta: 0x03B6, + eta: 0x03B7, + theta: 0x03B8, + iota: 0x03B9, + kappa: 0x03BA, + lambda: 0x03BB, + mu: 0x03BC, + nu: 0x03BD, + xi: 0x03BE, + omicron: 0x03BF, + pi: 0x03C0, + rho: 0x03C1, + sigmaf: 0x03C2, + sigma: 0x03C3, + tau: 0x03C4, + upsilon: 0x03C5, + phi: 0x03C6, + chi: 0x03C7, + psi: 0x03C8, + omega: 0x03C9, + thetasym: 0x03D1, + upsih: 0x03D2, + piv: 0x03D6, + ensp: 0x2002, + emsp: 0x2003, + thinsp: 0x2009, + zwnj: 0x200C, + zwj: 0x200D, + lrm: 0x200E, + rlm: 0x200F, + ndash: 0x2013, + mdash: 0x2014, + lsquo: 0x2018, + rsquo: 0x2019, + sbquo: 0x201A, + ldquo: 0x201C, + rdquo: 0x201D, + bdquo: 0x201E, + dagger: 0x2020, + Dagger: 0x2021, + bull: 0x2022, + hellip: 0x2026, + permil: 0x2030, + prime: 0x2032, + Prime: 0x2033, + lsaquo: 0x2039, + rsaquo: 0x203A, + oline: 0x203E, + frasl: 0x2044, + euro: 0x20AC, + image: 0x2111, + weierp: 0x2118, + real: 0x211C, + trade: 0x2122, + alefsym: 0x2135, + larr: 0x2190, + uarr: 0x2191, + rarr: 0x2192, + darr: 0x2193, + harr: 0x2194, + crarr: 0x21B5, + lArr: 0x21D0, + uArr: 0x21D1, + rArr: 0x21D2, + dArr: 0x21D3, + hArr: 0x21D4, + forall: 0x2200, + part: 0x2202, + exist: 0x2203, + empty: 0x2205, + nabla: 0x2207, + isin: 0x2208, + notin: 0x2209, + ni: 0x220B, + prod: 0x220F, + sum: 0x2211, + minus: 0x2212, + lowast: 0x2217, + radic: 0x221A, + prop: 0x221D, + infin: 0x221E, + ang: 0x2220, + and: 0x2227, + or: 0x2228, + cap: 0x2229, + cup: 0x222A, + int: 0x222B, + there4: 0x2234, + sim: 0x223C, + cong: 0x2245, + asymp: 0x2248, + ne: 0x2260, + equiv: 0x2261, + le: 0x2264, + ge: 0x2265, + sub: 0x2282, + sup: 0x2283, + nsub: 0x2284, + sube: 0x2286, + supe: 0x2287, + oplus: 0x2295, + otimes: 0x2297, + perp: 0x22A5, + sdot: 0x22C5, + lceil: 0x2308, + rceil: 0x2309, + lfloor: 0x230A, + rfloor: 0x230B, + lang: 0x2329, + rang: 0x232A, + loz: 0x25CA, + spades: 0x2660, + clubs: 0x2663, + hearts: 0x2665, + diams: 0x2666 + }); +})(ts || (ts = {})); +/*@internal*/ +var ts; +(function (ts) { + function transformES2016(context) { + var hoistVariableDeclaration = context.hoistVariableDeclaration; + return ts.chainBundle(transformSourceFile); + function transformSourceFile(node) { + if (node.isDeclarationFile) { + return node; + } + return ts.visitEachChild(node, visitor, context); + } + function visitor(node) { + if ((node.transformFlags & 128 /* ContainsES2016 */) === 0) { + return node; + } + switch (node.kind) { + case 209 /* BinaryExpression */: + return visitBinaryExpression(node); + default: + return ts.visitEachChild(node, visitor, context); + } + } + function visitBinaryExpression(node) { + switch (node.operatorToken.kind) { + case 66 /* AsteriskAsteriskEqualsToken */: + return visitExponentiationAssignmentExpression(node); + case 42 /* AsteriskAsteriskToken */: + return visitExponentiationExpression(node); + default: + return ts.visitEachChild(node, visitor, context); + } + } + function visitExponentiationAssignmentExpression(node) { + var target; + var value; + var left = ts.visitNode(node.left, visitor, ts.isExpression); + var right = ts.visitNode(node.right, visitor, ts.isExpression); + if (ts.isElementAccessExpression(left)) { + // Transforms `a[x] **= b` into `(_a = a)[_x = x] = Math.pow(_a[_x], b)` + var expressionTemp = ts.createTempVariable(hoistVariableDeclaration); + var argumentExpressionTemp = ts.createTempVariable(hoistVariableDeclaration); + target = ts.setTextRange(ts.createElementAccess(ts.setTextRange(ts.createAssignment(expressionTemp, left.expression), left.expression), ts.setTextRange(ts.createAssignment(argumentExpressionTemp, left.argumentExpression), left.argumentExpression)), left); + value = ts.setTextRange(ts.createElementAccess(expressionTemp, argumentExpressionTemp), left); + } + else if (ts.isPropertyAccessExpression(left)) { + // Transforms `a.x **= b` into `(_a = a).x = Math.pow(_a.x, b)` + var expressionTemp = ts.createTempVariable(hoistVariableDeclaration); + target = ts.setTextRange(ts.createPropertyAccess(ts.setTextRange(ts.createAssignment(expressionTemp, left.expression), left.expression), left.name), left); + value = ts.setTextRange(ts.createPropertyAccess(expressionTemp, left.name), left); + } + else { + // Transforms `a **= b` into `a = Math.pow(a, b)` + target = left; + value = left; + } + return ts.setTextRange(ts.createAssignment(target, ts.createMathPow(value, right, /*location*/ node)), node); + } + function visitExponentiationExpression(node) { + // Transforms `a ** b` into `Math.pow(a, b)` + var left = ts.visitNode(node.left, visitor, ts.isExpression); + var right = ts.visitNode(node.right, visitor, ts.isExpression); + return ts.createMathPow(left, right, /*location*/ node); + } + } + ts.transformES2016 = transformES2016; +})(ts || (ts = {})); +/*@internal*/ +var ts; +(function (ts) { + var ES2015SubstitutionFlags; + (function (ES2015SubstitutionFlags) { + /** Enables substitutions for captured `this` */ + ES2015SubstitutionFlags[ES2015SubstitutionFlags["CapturedThis"] = 1] = "CapturedThis"; + /** Enables substitutions for block-scoped bindings. */ + ES2015SubstitutionFlags[ES2015SubstitutionFlags["BlockScopedBindings"] = 2] = "BlockScopedBindings"; + })(ES2015SubstitutionFlags || (ES2015SubstitutionFlags = {})); + var LoopOutParameterFlags; + (function (LoopOutParameterFlags) { + LoopOutParameterFlags[LoopOutParameterFlags["Body"] = 1] = "Body"; + LoopOutParameterFlags[LoopOutParameterFlags["Initializer"] = 2] = "Initializer"; + })(LoopOutParameterFlags || (LoopOutParameterFlags = {})); + var CopyDirection; + (function (CopyDirection) { + CopyDirection[CopyDirection["ToOriginal"] = 0] = "ToOriginal"; + CopyDirection[CopyDirection["ToOutParameter"] = 1] = "ToOutParameter"; + })(CopyDirection || (CopyDirection = {})); + var Jump; + (function (Jump) { + Jump[Jump["Break"] = 2] = "Break"; + Jump[Jump["Continue"] = 4] = "Continue"; + Jump[Jump["Return"] = 8] = "Return"; + })(Jump || (Jump = {})); + // Facts we track as we traverse the tree + var HierarchyFacts; + (function (HierarchyFacts) { + HierarchyFacts[HierarchyFacts["None"] = 0] = "None"; + // + // Ancestor facts + // + HierarchyFacts[HierarchyFacts["Function"] = 1] = "Function"; + HierarchyFacts[HierarchyFacts["ArrowFunction"] = 2] = "ArrowFunction"; + HierarchyFacts[HierarchyFacts["AsyncFunctionBody"] = 4] = "AsyncFunctionBody"; + HierarchyFacts[HierarchyFacts["NonStaticClassElement"] = 8] = "NonStaticClassElement"; + HierarchyFacts[HierarchyFacts["CapturesThis"] = 16] = "CapturesThis"; + HierarchyFacts[HierarchyFacts["ExportedVariableStatement"] = 32] = "ExportedVariableStatement"; + HierarchyFacts[HierarchyFacts["TopLevel"] = 64] = "TopLevel"; + HierarchyFacts[HierarchyFacts["Block"] = 128] = "Block"; + HierarchyFacts[HierarchyFacts["IterationStatement"] = 256] = "IterationStatement"; + HierarchyFacts[HierarchyFacts["IterationStatementBlock"] = 512] = "IterationStatementBlock"; + HierarchyFacts[HierarchyFacts["IterationContainer"] = 1024] = "IterationContainer"; + HierarchyFacts[HierarchyFacts["ForStatement"] = 2048] = "ForStatement"; + HierarchyFacts[HierarchyFacts["ForInOrForOfStatement"] = 4096] = "ForInOrForOfStatement"; + HierarchyFacts[HierarchyFacts["ConstructorWithCapturedSuper"] = 8192] = "ConstructorWithCapturedSuper"; + // NOTE: do not add more ancestor flags without also updating AncestorFactsMask below. + // NOTE: when adding a new ancestor flag, be sure to update the subtree flags below. + // + // Ancestor masks + // + HierarchyFacts[HierarchyFacts["AncestorFactsMask"] = 16383] = "AncestorFactsMask"; + // We are always in *some* kind of block scope, but only specific block-scope containers are + // top-level or Blocks. + HierarchyFacts[HierarchyFacts["BlockScopeIncludes"] = 0] = "BlockScopeIncludes"; + HierarchyFacts[HierarchyFacts["BlockScopeExcludes"] = 7104] = "BlockScopeExcludes"; + // A source file is a top-level block scope. + HierarchyFacts[HierarchyFacts["SourceFileIncludes"] = 64] = "SourceFileIncludes"; + HierarchyFacts[HierarchyFacts["SourceFileExcludes"] = 8064] = "SourceFileExcludes"; + // Functions, methods, and accessors are both new lexical scopes and new block scopes. + HierarchyFacts[HierarchyFacts["FunctionIncludes"] = 65] = "FunctionIncludes"; + HierarchyFacts[HierarchyFacts["FunctionExcludes"] = 16286] = "FunctionExcludes"; + HierarchyFacts[HierarchyFacts["AsyncFunctionBodyIncludes"] = 69] = "AsyncFunctionBodyIncludes"; + HierarchyFacts[HierarchyFacts["AsyncFunctionBodyExcludes"] = 16278] = "AsyncFunctionBodyExcludes"; + // Arrow functions are lexically scoped to their container, but are new block scopes. + HierarchyFacts[HierarchyFacts["ArrowFunctionIncludes"] = 66] = "ArrowFunctionIncludes"; + HierarchyFacts[HierarchyFacts["ArrowFunctionExcludes"] = 15232] = "ArrowFunctionExcludes"; + // Constructors are both new lexical scopes and new block scopes. Constructors are also + // always considered non-static members of a class. + HierarchyFacts[HierarchyFacts["ConstructorIncludes"] = 73] = "ConstructorIncludes"; + HierarchyFacts[HierarchyFacts["ConstructorExcludes"] = 16278] = "ConstructorExcludes"; + // 'do' and 'while' statements are not block scopes. We track that the subtree is contained + // within an IterationStatement to indicate whether the embedded statement is an + // IterationStatementBlock. + HierarchyFacts[HierarchyFacts["DoOrWhileStatementIncludes"] = 1280] = "DoOrWhileStatementIncludes"; + HierarchyFacts[HierarchyFacts["DoOrWhileStatementExcludes"] = 0] = "DoOrWhileStatementExcludes"; + // 'for' statements are new block scopes and have special handling for 'let' declarations. + HierarchyFacts[HierarchyFacts["ForStatementIncludes"] = 3328] = "ForStatementIncludes"; + HierarchyFacts[HierarchyFacts["ForStatementExcludes"] = 5056] = "ForStatementExcludes"; + // 'for-in' and 'for-of' statements are new block scopes and have special handling for + // 'let' declarations. + HierarchyFacts[HierarchyFacts["ForInOrForOfStatementIncludes"] = 5376] = "ForInOrForOfStatementIncludes"; + HierarchyFacts[HierarchyFacts["ForInOrForOfStatementExcludes"] = 3008] = "ForInOrForOfStatementExcludes"; + // Blocks (other than function bodies) are new block scopes. + HierarchyFacts[HierarchyFacts["BlockIncludes"] = 128] = "BlockIncludes"; + HierarchyFacts[HierarchyFacts["BlockExcludes"] = 6976] = "BlockExcludes"; + HierarchyFacts[HierarchyFacts["IterationStatementBlockIncludes"] = 512] = "IterationStatementBlockIncludes"; + HierarchyFacts[HierarchyFacts["IterationStatementBlockExcludes"] = 7104] = "IterationStatementBlockExcludes"; + // + // Subtree facts + // + HierarchyFacts[HierarchyFacts["NewTarget"] = 16384] = "NewTarget"; + HierarchyFacts[HierarchyFacts["CapturedLexicalThis"] = 32768] = "CapturedLexicalThis"; + // + // Subtree masks + // + HierarchyFacts[HierarchyFacts["SubtreeFactsMask"] = -16384] = "SubtreeFactsMask"; + HierarchyFacts[HierarchyFacts["ArrowFunctionSubtreeExcludes"] = 0] = "ArrowFunctionSubtreeExcludes"; + HierarchyFacts[HierarchyFacts["FunctionSubtreeExcludes"] = 49152] = "FunctionSubtreeExcludes"; + })(HierarchyFacts || (HierarchyFacts = {})); + function transformES2015(context) { + var startLexicalEnvironment = context.startLexicalEnvironment, resumeLexicalEnvironment = context.resumeLexicalEnvironment, endLexicalEnvironment = context.endLexicalEnvironment, hoistVariableDeclaration = context.hoistVariableDeclaration; + var compilerOptions = context.getCompilerOptions(); + var resolver = context.getEmitResolver(); + var previousOnSubstituteNode = context.onSubstituteNode; + var previousOnEmitNode = context.onEmitNode; + context.onEmitNode = onEmitNode; + context.onSubstituteNode = onSubstituteNode; + var currentSourceFile; + var currentText; + var hierarchyFacts; + var taggedTemplateStringDeclarations; + function recordTaggedTemplateString(temp) { + taggedTemplateStringDeclarations = ts.append(taggedTemplateStringDeclarations, ts.createVariableDeclaration(temp)); + } + /** + * Used to track if we are emitting body of the converted loop + */ + var convertedLoopState; + /** + * Keeps track of whether substitutions have been enabled for specific cases. + * They are persisted between each SourceFile transformation and should not + * be reset. + */ + var enabledSubstitutions; + return ts.chainBundle(transformSourceFile); + function transformSourceFile(node) { + if (node.isDeclarationFile) { + return node; + } + currentSourceFile = node; + currentText = node.text; + var visited = visitSourceFile(node); + ts.addEmitHelpers(visited, context.readEmitHelpers()); + currentSourceFile = undefined; + currentText = undefined; + taggedTemplateStringDeclarations = undefined; + hierarchyFacts = 0 /* None */; + return visited; + } + /** + * Sets the `HierarchyFacts` for this node prior to visiting this node's subtree, returning the facts set prior to modification. + * @param excludeFacts The existing `HierarchyFacts` to reset before visiting the subtree. + * @param includeFacts The new `HierarchyFacts` to set before visiting the subtree. + */ + function enterSubtree(excludeFacts, includeFacts) { + var ancestorFacts = hierarchyFacts; + hierarchyFacts = (hierarchyFacts & ~excludeFacts | includeFacts) & 16383 /* AncestorFactsMask */; + return ancestorFacts; + } + /** + * Restores the `HierarchyFacts` for this node's ancestor after visiting this node's + * subtree, propagating specific facts from the subtree. + * @param ancestorFacts The `HierarchyFacts` of the ancestor to restore after visiting the subtree. + * @param excludeFacts The existing `HierarchyFacts` of the subtree that should not be propagated. + * @param includeFacts The new `HierarchyFacts` of the subtree that should be propagated. + */ + function exitSubtree(ancestorFacts, excludeFacts, includeFacts) { + hierarchyFacts = (hierarchyFacts & ~excludeFacts | includeFacts) & -16384 /* SubtreeFactsMask */ | ancestorFacts; + } + function isReturnVoidStatementInConstructorWithCapturedSuper(node) { + return (hierarchyFacts & 8192 /* ConstructorWithCapturedSuper */) !== 0 + && node.kind === 235 /* ReturnStatement */ + && !node.expression; + } + function shouldVisitNode(node) { + return (node.transformFlags & 256 /* ContainsES2015 */) !== 0 + || convertedLoopState !== undefined + || (hierarchyFacts & 8192 /* ConstructorWithCapturedSuper */ && (ts.isStatement(node) || (node.kind === 223 /* Block */))) + || (ts.isIterationStatement(node, /*lookInLabeledStatements*/ false) && shouldConvertIterationStatement(node)) + || (ts.getEmitFlags(node) & 33554432 /* TypeScriptClassWrapper */) !== 0; + } + function visitor(node) { + if (shouldVisitNode(node)) { + return visitJavaScript(node); + } + else { + return node; + } + } + function callExpressionVisitor(node) { + if (node.kind === 102 /* SuperKeyword */) { + return visitSuperKeyword(/*isExpressionOfCall*/ true); + } + return visitor(node); + } + function visitJavaScript(node) { + switch (node.kind) { + case 120 /* StaticKeyword */: + return undefined; // elide static keyword + case 245 /* ClassDeclaration */: + return visitClassDeclaration(node); + case 214 /* ClassExpression */: + return visitClassExpression(node); + case 156 /* Parameter */: + return visitParameter(node); + case 244 /* FunctionDeclaration */: + return visitFunctionDeclaration(node); + case 202 /* ArrowFunction */: + return visitArrowFunction(node); + case 201 /* FunctionExpression */: + return visitFunctionExpression(node); + case 242 /* VariableDeclaration */: + return visitVariableDeclaration(node); + case 75 /* Identifier */: + return visitIdentifier(node); + case 243 /* VariableDeclarationList */: + return visitVariableDeclarationList(node); + case 237 /* SwitchStatement */: + return visitSwitchStatement(node); + case 251 /* CaseBlock */: + return visitCaseBlock(node); + case 223 /* Block */: + return visitBlock(node, /*isFunctionBody*/ false); + case 234 /* BreakStatement */: + case 233 /* ContinueStatement */: + return visitBreakOrContinueStatement(node); + case 238 /* LabeledStatement */: + return visitLabeledStatement(node); + case 228 /* DoStatement */: + case 229 /* WhileStatement */: + return visitDoOrWhileStatement(node, /*outermostLabeledStatement*/ undefined); + case 230 /* ForStatement */: + return visitForStatement(node, /*outermostLabeledStatement*/ undefined); + case 231 /* ForInStatement */: + return visitForInStatement(node, /*outermostLabeledStatement*/ undefined); + case 232 /* ForOfStatement */: + return visitForOfStatement(node, /*outermostLabeledStatement*/ undefined); + case 226 /* ExpressionStatement */: + return visitExpressionStatement(node); + case 193 /* ObjectLiteralExpression */: + return visitObjectLiteralExpression(node); + case 280 /* CatchClause */: + return visitCatchClause(node); + case 282 /* ShorthandPropertyAssignment */: + return visitShorthandPropertyAssignment(node); + case 154 /* ComputedPropertyName */: + return visitComputedPropertyName(node); + case 192 /* ArrayLiteralExpression */: + return visitArrayLiteralExpression(node); + case 196 /* CallExpression */: + return visitCallExpression(node); + case 197 /* NewExpression */: + return visitNewExpression(node); + case 200 /* ParenthesizedExpression */: + return visitParenthesizedExpression(node, /*needsDestructuringValue*/ true); + case 209 /* BinaryExpression */: + return visitBinaryExpression(node, /*needsDestructuringValue*/ true); + case 14 /* NoSubstitutionTemplateLiteral */: + case 15 /* TemplateHead */: + case 16 /* TemplateMiddle */: + case 17 /* TemplateTail */: + return visitTemplateLiteral(node); + case 10 /* StringLiteral */: + return visitStringLiteral(node); + case 8 /* NumericLiteral */: + return visitNumericLiteral(node); + case 198 /* TaggedTemplateExpression */: + return visitTaggedTemplateExpression(node); + case 211 /* TemplateExpression */: + return visitTemplateExpression(node); + case 212 /* YieldExpression */: + return visitYieldExpression(node); + case 213 /* SpreadElement */: + return visitSpreadElement(node); + case 102 /* SuperKeyword */: + return visitSuperKeyword(/*isExpressionOfCall*/ false); + case 104 /* ThisKeyword */: + return visitThisKeyword(node); + case 219 /* MetaProperty */: + return visitMetaProperty(node); + case 161 /* MethodDeclaration */: + return visitMethodDeclaration(node); + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + return visitAccessorDeclaration(node); + case 225 /* VariableStatement */: + return visitVariableStatement(node); + case 235 /* ReturnStatement */: + return visitReturnStatement(node); + default: + return ts.visitEachChild(node, visitor, context); + } + } + function visitSourceFile(node) { + var ancestorFacts = enterSubtree(8064 /* SourceFileExcludes */, 64 /* SourceFileIncludes */); + var prologue = []; + var statements = []; + startLexicalEnvironment(); + var statementOffset = ts.addStandardPrologue(prologue, node.statements, /*ensureUseStrict*/ false); + statementOffset = ts.addCustomPrologue(prologue, node.statements, statementOffset, visitor); + ts.addRange(statements, ts.visitNodes(node.statements, visitor, ts.isStatement, statementOffset)); + if (taggedTemplateStringDeclarations) { + statements.push(ts.createVariableStatement(/*modifiers*/ undefined, ts.createVariableDeclarationList(taggedTemplateStringDeclarations))); + } + ts.mergeLexicalEnvironment(prologue, endLexicalEnvironment()); + insertCaptureThisForNodeIfNeeded(prologue, node); + exitSubtree(ancestorFacts, 0 /* None */, 0 /* None */); + return ts.updateSourceFileNode(node, ts.setTextRange(ts.createNodeArray(ts.concatenate(prologue, statements)), node.statements)); + } + function visitSwitchStatement(node) { + if (convertedLoopState !== undefined) { + var savedAllowedNonLabeledJumps = convertedLoopState.allowedNonLabeledJumps; + // for switch statement allow only non-labeled break + convertedLoopState.allowedNonLabeledJumps |= 2 /* Break */; + var result = ts.visitEachChild(node, visitor, context); + convertedLoopState.allowedNonLabeledJumps = savedAllowedNonLabeledJumps; + return result; + } + return ts.visitEachChild(node, visitor, context); + } + function visitCaseBlock(node) { + var ancestorFacts = enterSubtree(7104 /* BlockScopeExcludes */, 0 /* BlockScopeIncludes */); + var updated = ts.visitEachChild(node, visitor, context); + exitSubtree(ancestorFacts, 0 /* None */, 0 /* None */); + return updated; + } + function returnCapturedThis(node) { + return ts.setOriginalNode(ts.createReturn(ts.createFileLevelUniqueName("_this")), node); + } + function visitReturnStatement(node) { + if (convertedLoopState) { + convertedLoopState.nonLocalJumps |= 8 /* Return */; + if (isReturnVoidStatementInConstructorWithCapturedSuper(node)) { + node = returnCapturedThis(node); + } + return ts.createReturn(ts.createObjectLiteral([ + ts.createPropertyAssignment(ts.createIdentifier("value"), node.expression + ? ts.visitNode(node.expression, visitor, ts.isExpression) + : ts.createVoidZero()) + ])); + } + else if (isReturnVoidStatementInConstructorWithCapturedSuper(node)) { + return returnCapturedThis(node); + } + return ts.visitEachChild(node, visitor, context); + } + function visitThisKeyword(node) { + if (hierarchyFacts & 2 /* ArrowFunction */) { + hierarchyFacts |= 32768 /* CapturedLexicalThis */; + } + if (convertedLoopState) { + if (hierarchyFacts & 2 /* ArrowFunction */) { + // if the enclosing function is an ArrowFunction then we use the captured 'this' keyword. + convertedLoopState.containsLexicalThis = true; + return node; + } + return convertedLoopState.thisName || (convertedLoopState.thisName = ts.createUniqueName("this")); + } + return node; + } + function visitIdentifier(node) { + if (!convertedLoopState) { + return node; + } + if (ts.isGeneratedIdentifier(node)) { + return node; + } + if (node.escapedText !== "arguments" || !resolver.isArgumentsLocalBinding(node)) { + return node; + } + return convertedLoopState.argumentsName || (convertedLoopState.argumentsName = ts.createUniqueName("arguments")); + } + function visitBreakOrContinueStatement(node) { + if (convertedLoopState) { + // check if we can emit break/continue as is + // it is possible if either + // - break/continue is labeled and label is located inside the converted loop + // - break/continue is non-labeled and located in non-converted loop/switch statement + var jump = node.kind === 234 /* BreakStatement */ ? 2 /* Break */ : 4 /* Continue */; + var canUseBreakOrContinue = (node.label && convertedLoopState.labels && convertedLoopState.labels.get(ts.idText(node.label))) || + (!node.label && (convertedLoopState.allowedNonLabeledJumps & jump)); + if (!canUseBreakOrContinue) { + var labelMarker = void 0; + var label = node.label; + if (!label) { + if (node.kind === 234 /* BreakStatement */) { + convertedLoopState.nonLocalJumps |= 2 /* Break */; + labelMarker = "break"; + } + else { + convertedLoopState.nonLocalJumps |= 4 /* Continue */; + // note: return value is emitted only to simplify debugging, call to converted loop body does not do any dispatching on it. + labelMarker = "continue"; + } + } + else { + if (node.kind === 234 /* BreakStatement */) { + labelMarker = "break-" + label.escapedText; + setLabeledJump(convertedLoopState, /*isBreak*/ true, ts.idText(label), labelMarker); + } + else { + labelMarker = "continue-" + label.escapedText; + setLabeledJump(convertedLoopState, /*isBreak*/ false, ts.idText(label), labelMarker); + } + } + var returnExpression = ts.createLiteral(labelMarker); + if (convertedLoopState.loopOutParameters.length) { + var outParams = convertedLoopState.loopOutParameters; + var expr = void 0; + for (var i = 0; i < outParams.length; i++) { + var copyExpr = copyOutParameter(outParams[i], 1 /* ToOutParameter */); + if (i === 0) { + expr = copyExpr; + } + else { + expr = ts.createBinary(expr, 27 /* CommaToken */, copyExpr); + } + } + returnExpression = ts.createBinary(expr, 27 /* CommaToken */, returnExpression); + } + return ts.createReturn(returnExpression); + } + } + return ts.visitEachChild(node, visitor, context); + } + /** + * Visits a ClassDeclaration and transforms it into a variable statement. + * + * @param node A ClassDeclaration node. + */ + function visitClassDeclaration(node) { + // [source] + // class C { } + // + // [output] + // var C = (function () { + // function C() { + // } + // return C; + // }()); + var variable = ts.createVariableDeclaration(ts.getLocalName(node, /*allowComments*/ true), + /*type*/ undefined, transformClassLikeDeclarationToExpression(node)); + ts.setOriginalNode(variable, node); + var statements = []; + var statement = ts.createVariableStatement(/*modifiers*/ undefined, ts.createVariableDeclarationList([variable])); + ts.setOriginalNode(statement, node); + ts.setTextRange(statement, node); + ts.startOnNewLine(statement); + statements.push(statement); + // Add an `export default` statement for default exports (for `--target es5 --module es6`) + if (ts.hasModifier(node, 1 /* Export */)) { + var exportStatement = ts.hasModifier(node, 512 /* Default */) + ? ts.createExportDefault(ts.getLocalName(node)) + : ts.createExternalModuleExport(ts.getLocalName(node)); + ts.setOriginalNode(exportStatement, statement); + statements.push(exportStatement); + } + var emitFlags = ts.getEmitFlags(node); + if ((emitFlags & 4194304 /* HasEndOfDeclarationMarker */) === 0) { + // Add a DeclarationMarker as a marker for the end of the declaration + statements.push(ts.createEndOfDeclarationMarker(node)); + ts.setEmitFlags(statement, emitFlags | 4194304 /* HasEndOfDeclarationMarker */); + } + return ts.singleOrMany(statements); + } + /** + * Visits a ClassExpression and transforms it into an expression. + * + * @param node A ClassExpression node. + */ + function visitClassExpression(node) { + // [source] + // C = class { } + // + // [output] + // C = (function () { + // function class_1() { + // } + // return class_1; + // }()) + return transformClassLikeDeclarationToExpression(node); + } + /** + * Transforms a ClassExpression or ClassDeclaration into an expression. + * + * @param node A ClassExpression or ClassDeclaration node. + */ + function transformClassLikeDeclarationToExpression(node) { + // [source] + // class C extends D { + // constructor() {} + // method() {} + // get prop() {} + // set prop(v) {} + // } + // + // [output] + // (function (_super) { + // __extends(C, _super); + // function C() { + // } + // C.prototype.method = function () {} + // Object.defineProperty(C.prototype, "prop", { + // get: function() {}, + // set: function() {}, + // enumerable: true, + // configurable: true + // }); + // return C; + // }(D)) + if (node.name) { + enableSubstitutionsForBlockScopedBindings(); + } + var extendsClauseElement = ts.getClassExtendsHeritageElement(node); + var classFunction = ts.createFunctionExpression( + /*modifiers*/ undefined, + /*asteriskToken*/ undefined, + /*name*/ undefined, + /*typeParameters*/ undefined, extendsClauseElement ? [ts.createParameter(/*decorators*/ undefined, /*modifiers*/ undefined, /*dotDotDotToken*/ undefined, ts.createFileLevelUniqueName("_super"))] : [], + /*type*/ undefined, transformClassBody(node, extendsClauseElement)); + // To preserve the behavior of the old emitter, we explicitly indent + // the body of the function here if it was requested in an earlier + // transformation. + ts.setEmitFlags(classFunction, (ts.getEmitFlags(node) & 65536 /* Indented */) | 524288 /* ReuseTempVariableScope */); + // "inner" and "outer" below are added purely to preserve source map locations from + // the old emitter + var inner = ts.createPartiallyEmittedExpression(classFunction); + inner.end = node.end; + ts.setEmitFlags(inner, 1536 /* NoComments */); + var outer = ts.createPartiallyEmittedExpression(inner); + outer.end = ts.skipTrivia(currentText, node.pos); + ts.setEmitFlags(outer, 1536 /* NoComments */); + var result = ts.createParen(ts.createCall(outer, + /*typeArguments*/ undefined, extendsClauseElement + ? [ts.visitNode(extendsClauseElement.expression, visitor, ts.isExpression)] + : [])); + ts.addSyntheticLeadingComment(result, 3 /* MultiLineCommentTrivia */, "* @class "); + return result; + } + /** + * Transforms a ClassExpression or ClassDeclaration into a function body. + * + * @param node A ClassExpression or ClassDeclaration node. + * @param extendsClauseElement The expression for the class `extends` clause. + */ + function transformClassBody(node, extendsClauseElement) { + var statements = []; + startLexicalEnvironment(); + addExtendsHelperIfNeeded(statements, node, extendsClauseElement); + addConstructor(statements, node, extendsClauseElement); + addClassMembers(statements, node); + // Create a synthetic text range for the return statement. + var closingBraceLocation = ts.createTokenRange(ts.skipTrivia(currentText, node.members.end), 19 /* CloseBraceToken */); + var localName = ts.getInternalName(node); + // The following partially-emitted expression exists purely to align our sourcemap + // emit with the original emitter. + var outer = ts.createPartiallyEmittedExpression(localName); + outer.end = closingBraceLocation.end; + ts.setEmitFlags(outer, 1536 /* NoComments */); + var statement = ts.createReturn(outer); + statement.pos = closingBraceLocation.pos; + ts.setEmitFlags(statement, 1536 /* NoComments */ | 384 /* NoTokenSourceMaps */); + statements.push(statement); + ts.insertStatementsAfterStandardPrologue(statements, endLexicalEnvironment()); + var block = ts.createBlock(ts.setTextRange(ts.createNodeArray(statements), /*location*/ node.members), /*multiLine*/ true); + ts.setEmitFlags(block, 1536 /* NoComments */); + return block; + } + /** + * Adds a call to the `__extends` helper if needed for a class. + * + * @param statements The statements of the class body function. + * @param node The ClassExpression or ClassDeclaration node. + * @param extendsClauseElement The expression for the class `extends` clause. + */ + function addExtendsHelperIfNeeded(statements, node, extendsClauseElement) { + if (extendsClauseElement) { + statements.push(ts.setTextRange(ts.createExpressionStatement(createExtendsHelper(context, ts.getInternalName(node))), + /*location*/ extendsClauseElement)); + } + } + /** + * Adds the constructor of the class to a class body function. + * + * @param statements The statements of the class body function. + * @param node The ClassExpression or ClassDeclaration node. + * @param extendsClauseElement The expression for the class `extends` clause. + */ + function addConstructor(statements, node, extendsClauseElement) { + var savedConvertedLoopState = convertedLoopState; + convertedLoopState = undefined; + var ancestorFacts = enterSubtree(16278 /* ConstructorExcludes */, 73 /* ConstructorIncludes */); + var constructor = ts.getFirstConstructorWithBody(node); + var hasSynthesizedSuper = hasSynthesizedDefaultSuperCall(constructor, extendsClauseElement !== undefined); + var constructorFunction = ts.createFunctionDeclaration( + /*decorators*/ undefined, + /*modifiers*/ undefined, + /*asteriskToken*/ undefined, ts.getInternalName(node), + /*typeParameters*/ undefined, transformConstructorParameters(constructor, hasSynthesizedSuper), + /*type*/ undefined, transformConstructorBody(constructor, node, extendsClauseElement, hasSynthesizedSuper)); + ts.setTextRange(constructorFunction, constructor || node); + if (extendsClauseElement) { + ts.setEmitFlags(constructorFunction, 8 /* CapturesThis */); + } + statements.push(constructorFunction); + exitSubtree(ancestorFacts, 49152 /* FunctionSubtreeExcludes */, 0 /* None */); + convertedLoopState = savedConvertedLoopState; + } + /** + * Transforms the parameters of the constructor declaration of a class. + * + * @param constructor The constructor for the class. + * @param hasSynthesizedSuper A value indicating whether the constructor starts with a + * synthesized `super` call. + */ + function transformConstructorParameters(constructor, hasSynthesizedSuper) { + // If the TypeScript transformer needed to synthesize a constructor for property + // initializers, it would have also added a synthetic `...args` parameter and + // `super` call. + // If this is the case, we do not include the synthetic `...args` parameter and + // will instead use the `arguments` object in ES5/3. + return ts.visitParameterList(constructor && !hasSynthesizedSuper ? constructor.parameters : undefined, visitor, context) + || []; + } + function createDefaultConstructorBody(node, isDerivedClass) { + // We must be here because the user didn't write a constructor + // but we needed to call 'super(...args)' anyway as per 14.5.14 of the ES2016 spec. + // If that's the case we can just immediately return the result of a 'super()' call. + var statements = []; + resumeLexicalEnvironment(); + ts.mergeLexicalEnvironment(statements, endLexicalEnvironment()); + if (isDerivedClass) { + // return _super !== null && _super.apply(this, arguments) || this; + statements.push(ts.createReturn(createDefaultSuperCallOrThis())); + } + var statementsArray = ts.createNodeArray(statements); + ts.setTextRange(statementsArray, node.members); + var block = ts.createBlock(statementsArray, /*multiLine*/ true); + ts.setTextRange(block, node); + ts.setEmitFlags(block, 1536 /* NoComments */); + return block; + } + /** + * Transforms the body of a constructor declaration of a class. + * + * @param constructor The constructor for the class. + * @param node The node which contains the constructor. + * @param extendsClauseElement The expression for the class `extends` clause. + * @param hasSynthesizedSuper A value indicating whether the constructor starts with a + * synthesized `super` call. + */ + function transformConstructorBody(constructor, node, extendsClauseElement, hasSynthesizedSuper) { + // determine whether the class is known syntactically to be a derived class (e.g. a + // class that extends a value that is not syntactically known to be `null`). + var isDerivedClass = !!extendsClauseElement && ts.skipOuterExpressions(extendsClauseElement.expression).kind !== 100 /* NullKeyword */; + // When the subclass does not have a constructor, we synthesize a *default* constructor using the following + // representation: + // + // ``` + // // es2015 (source) + // class C extends Base { } + // + // // es5 (transformed) + // var C = (function (_super) { + // function C() { + // return _super.apply(this, arguments) || this; + // } + // return C; + // })(Base); + // ``` + if (!constructor) + return createDefaultConstructorBody(node, isDerivedClass); + // The prologue will contain all leading standard and custom prologue statements added by this transform + var prologue = []; + var statements = []; + resumeLexicalEnvironment(); + // If a super call has already been synthesized, + // we're going to assume that we should just transform everything after that. + // The assumption is that no prior step in the pipeline has added any prologue directives. + var statementOffset = 0; + if (!hasSynthesizedSuper) + statementOffset = ts.addStandardPrologue(prologue, constructor.body.statements, /*ensureUseStrict*/ false); + addDefaultValueAssignmentsIfNeeded(statements, constructor); + addRestParameterIfNeeded(statements, constructor, hasSynthesizedSuper); + if (!hasSynthesizedSuper) + statementOffset = ts.addCustomPrologue(statements, constructor.body.statements, statementOffset, visitor); + // If the first statement is a call to `super()`, visit the statement directly + var superCallExpression; + if (hasSynthesizedSuper) { + superCallExpression = createDefaultSuperCallOrThis(); + } + else if (isDerivedClass && statementOffset < constructor.body.statements.length) { + var firstStatement = constructor.body.statements[statementOffset]; + if (ts.isExpressionStatement(firstStatement) && ts.isSuperCall(firstStatement.expression)) { + superCallExpression = visitImmediateSuperCallInBody(firstStatement.expression); + } + } + if (superCallExpression) { + hierarchyFacts |= 8192 /* ConstructorWithCapturedSuper */; + statementOffset++; // skip this statement, we will add it after visiting the rest of the body. + } + // visit the remaining statements + ts.addRange(statements, ts.visitNodes(constructor.body.statements, visitor, ts.isStatement, /*start*/ statementOffset)); + ts.mergeLexicalEnvironment(prologue, endLexicalEnvironment()); + insertCaptureNewTargetIfNeeded(prologue, constructor, /*copyOnWrite*/ false); + if (isDerivedClass) { + if (superCallExpression && statementOffset === constructor.body.statements.length && !(constructor.body.transformFlags & 4096 /* ContainsLexicalThis */)) { + // If the subclass constructor does *not* contain `this` and *ends* with a `super()` call, we will use the + // following representation: + // + // ``` + // // es2015 (source) + // class C extends Base { + // constructor() { + // super("foo"); + // } + // } + // + // // es5 (transformed) + // var C = (function (_super) { + // function C() { + // return _super.call(this, "foo") || this; + // } + // return C; + // })(Base); + // ``` + var superCall = ts.cast(ts.cast(superCallExpression, ts.isBinaryExpression).left, ts.isCallExpression); + var returnStatement = ts.createReturn(superCallExpression); + ts.setCommentRange(returnStatement, ts.getCommentRange(superCall)); + ts.setEmitFlags(superCall, 1536 /* NoComments */); + statements.push(returnStatement); + } + else { + // Otherwise, we will use the following transformed representation for calls to `super()` in a constructor: + // + // ``` + // // es2015 (source) + // class C extends Base { + // constructor() { + // super("foo"); + // this.x = 1; + // } + // } + // + // // es5 (transformed) + // var C = (function (_super) { + // function C() { + // var _this = _super.call(this, "foo") || this; + // _this.x = 1; + // return _this; + // } + // return C; + // })(Base); + // ``` + // Since the `super()` call was the first statement, we insert the `this` capturing call to + // `super()` at the top of the list of `statements` (after any pre-existing custom prologues). + insertCaptureThisForNode(statements, constructor, superCallExpression || createActualThis()); + if (!isSufficientlyCoveredByReturnStatements(constructor.body)) { + statements.push(ts.createReturn(ts.createFileLevelUniqueName("_this"))); + } + } + } + else { + // If a class is not derived from a base class or does not have a call to `super()`, `this` is only + // captured when necessitated by an arrow function capturing the lexical `this`: + // + // ``` + // // es2015 + // class C {} + // + // // es5 + // var C = (function () { + // function C() { + // } + // return C; + // })(); + // ``` + insertCaptureThisForNodeIfNeeded(prologue, constructor); + } + var block = ts.createBlock(ts.setTextRange(ts.createNodeArray(ts.concatenate(prologue, statements)), + /*location*/ constructor.body.statements), + /*multiLine*/ true); + ts.setTextRange(block, constructor.body); + return block; + } + /** + * We want to try to avoid emitting a return statement in certain cases if a user already returned something. + * It would generate obviously dead code, so we'll try to make things a little bit prettier + * by doing a minimal check on whether some common patterns always explicitly return. + */ + function isSufficientlyCoveredByReturnStatements(statement) { + // A return statement is considered covered. + if (statement.kind === 235 /* ReturnStatement */) { + return true; + } + // An if-statement with two covered branches is covered. + else if (statement.kind === 227 /* IfStatement */) { + var ifStatement = statement; + if (ifStatement.elseStatement) { + return isSufficientlyCoveredByReturnStatements(ifStatement.thenStatement) && + isSufficientlyCoveredByReturnStatements(ifStatement.elseStatement); + } + } + // A block is covered if it has a last statement which is covered. + else if (statement.kind === 223 /* Block */) { + var lastStatement = ts.lastOrUndefined(statement.statements); + if (lastStatement && isSufficientlyCoveredByReturnStatements(lastStatement)) { + return true; + } + } + return false; + } + function createActualThis() { + return ts.setEmitFlags(ts.createThis(), 4 /* NoSubstitution */); + } + function createDefaultSuperCallOrThis() { + return ts.createLogicalOr(ts.createLogicalAnd(ts.createStrictInequality(ts.createFileLevelUniqueName("_super"), ts.createNull()), ts.createFunctionApply(ts.createFileLevelUniqueName("_super"), createActualThis(), ts.createIdentifier("arguments"))), createActualThis()); + } + /** + * Visits a parameter declaration. + * + * @param node A ParameterDeclaration node. + */ + function visitParameter(node) { + if (node.dotDotDotToken) { + // rest parameters are elided + return undefined; + } + else if (ts.isBindingPattern(node.name)) { + // Binding patterns are converted into a generated name and are + // evaluated inside the function body. + return ts.setOriginalNode(ts.setTextRange(ts.createParameter( + /*decorators*/ undefined, + /*modifiers*/ undefined, + /*dotDotDotToken*/ undefined, ts.getGeneratedNameForNode(node), + /*questionToken*/ undefined, + /*type*/ undefined, + /*initializer*/ undefined), + /*location*/ node), + /*original*/ node); + } + else if (node.initializer) { + // Initializers are elided + return ts.setOriginalNode(ts.setTextRange(ts.createParameter( + /*decorators*/ undefined, + /*modifiers*/ undefined, + /*dotDotDotToken*/ undefined, node.name, + /*questionToken*/ undefined, + /*type*/ undefined, + /*initializer*/ undefined), + /*location*/ node), + /*original*/ node); + } + else { + return node; + } + } + function hasDefaultValueOrBindingPattern(node) { + return node.initializer !== undefined + || ts.isBindingPattern(node.name); + } + /** + * Adds statements to the body of a function-like node if it contains parameters with + * binding patterns or initializers. + * + * @param statements The statements for the new function body. + * @param node A function-like node. + */ + function addDefaultValueAssignmentsIfNeeded(statements, node) { + if (!ts.some(node.parameters, hasDefaultValueOrBindingPattern)) { + return false; + } + var added = false; + for (var _i = 0, _a = node.parameters; _i < _a.length; _i++) { + var parameter = _a[_i]; + var name = parameter.name, initializer = parameter.initializer, dotDotDotToken = parameter.dotDotDotToken; + // A rest parameter cannot have a binding pattern or an initializer, + // so let's just ignore it. + if (dotDotDotToken) { + continue; + } + if (ts.isBindingPattern(name)) { + added = insertDefaultValueAssignmentForBindingPattern(statements, parameter, name, initializer) || added; + } + else if (initializer) { + insertDefaultValueAssignmentForInitializer(statements, parameter, name, initializer); + added = true; + } + } + return added; + } + /** + * Adds statements to the body of a function-like node for parameters with binding patterns + * + * @param statements The statements for the new function body. + * @param parameter The parameter for the function. + * @param name The name of the parameter. + * @param initializer The initializer for the parameter. + */ + function insertDefaultValueAssignmentForBindingPattern(statements, parameter, name, initializer) { + // In cases where a binding pattern is simply '[]' or '{}', + // we usually don't want to emit a var declaration; however, in the presence + // of an initializer, we must emit that expression to preserve side effects. + if (name.elements.length > 0) { + ts.insertStatementAfterCustomPrologue(statements, ts.setEmitFlags(ts.createVariableStatement( + /*modifiers*/ undefined, ts.createVariableDeclarationList(ts.flattenDestructuringBinding(parameter, visitor, context, 0 /* All */, ts.getGeneratedNameForNode(parameter)))), 1048576 /* CustomPrologue */)); + return true; + } + else if (initializer) { + ts.insertStatementAfterCustomPrologue(statements, ts.setEmitFlags(ts.createExpressionStatement(ts.createAssignment(ts.getGeneratedNameForNode(parameter), ts.visitNode(initializer, visitor, ts.isExpression))), 1048576 /* CustomPrologue */)); + return true; + } + return false; + } + /** + * Adds statements to the body of a function-like node for parameters with initializers. + * + * @param statements The statements for the new function body. + * @param parameter The parameter for the function. + * @param name The name of the parameter. + * @param initializer The initializer for the parameter. + */ + function insertDefaultValueAssignmentForInitializer(statements, parameter, name, initializer) { + initializer = ts.visitNode(initializer, visitor, ts.isExpression); + var statement = ts.createIf(ts.createTypeCheck(ts.getSynthesizedClone(name), "undefined"), ts.setEmitFlags(ts.setTextRange(ts.createBlock([ + ts.createExpressionStatement(ts.setEmitFlags(ts.setTextRange(ts.createAssignment(ts.setEmitFlags(ts.getMutableClone(name), 48 /* NoSourceMap */), ts.setEmitFlags(initializer, 48 /* NoSourceMap */ | ts.getEmitFlags(initializer) | 1536 /* NoComments */)), parameter), 1536 /* NoComments */)) + ]), parameter), 1 /* SingleLine */ | 32 /* NoTrailingSourceMap */ | 384 /* NoTokenSourceMaps */ | 1536 /* NoComments */)); + ts.startOnNewLine(statement); + ts.setTextRange(statement, parameter); + ts.setEmitFlags(statement, 384 /* NoTokenSourceMaps */ | 32 /* NoTrailingSourceMap */ | 1048576 /* CustomPrologue */ | 1536 /* NoComments */); + ts.insertStatementAfterCustomPrologue(statements, statement); + } + /** + * Gets a value indicating whether we need to add statements to handle a rest parameter. + * + * @param node A ParameterDeclaration node. + * @param inConstructorWithSynthesizedSuper A value indicating whether the parameter is + * part of a constructor declaration with a + * synthesized call to `super` + */ + function shouldAddRestParameter(node, inConstructorWithSynthesizedSuper) { + return !!(node && node.dotDotDotToken && !inConstructorWithSynthesizedSuper); + } + /** + * Adds statements to the body of a function-like node if it contains a rest parameter. + * + * @param statements The statements for the new function body. + * @param node A function-like node. + * @param inConstructorWithSynthesizedSuper A value indicating whether the parameter is + * part of a constructor declaration with a + * synthesized call to `super` + */ + function addRestParameterIfNeeded(statements, node, inConstructorWithSynthesizedSuper) { + var prologueStatements = []; + var parameter = ts.lastOrUndefined(node.parameters); + if (!shouldAddRestParameter(parameter, inConstructorWithSynthesizedSuper)) { + return false; + } + // `declarationName` is the name of the local declaration for the parameter. + var declarationName = parameter.name.kind === 75 /* Identifier */ ? ts.getMutableClone(parameter.name) : ts.createTempVariable(/*recordTempVariable*/ undefined); + ts.setEmitFlags(declarationName, 48 /* NoSourceMap */); + // `expressionName` is the name of the parameter used in expressions. + var expressionName = parameter.name.kind === 75 /* Identifier */ ? ts.getSynthesizedClone(parameter.name) : declarationName; + var restIndex = node.parameters.length - 1; + var temp = ts.createLoopVariable(); + // var param = []; + prologueStatements.push(ts.setEmitFlags(ts.setTextRange(ts.createVariableStatement( + /*modifiers*/ undefined, ts.createVariableDeclarationList([ + ts.createVariableDeclaration(declarationName, + /*type*/ undefined, ts.createArrayLiteral([])) + ])), + /*location*/ parameter), 1048576 /* CustomPrologue */)); + // for (var _i = restIndex; _i < arguments.length; _i++) { + // param[_i - restIndex] = arguments[_i]; + // } + var forStatement = ts.createFor(ts.setTextRange(ts.createVariableDeclarationList([ + ts.createVariableDeclaration(temp, /*type*/ undefined, ts.createLiteral(restIndex)) + ]), parameter), ts.setTextRange(ts.createLessThan(temp, ts.createPropertyAccess(ts.createIdentifier("arguments"), "length")), parameter), ts.setTextRange(ts.createPostfixIncrement(temp), parameter), ts.createBlock([ + ts.startOnNewLine(ts.setTextRange(ts.createExpressionStatement(ts.createAssignment(ts.createElementAccess(expressionName, restIndex === 0 + ? temp + : ts.createSubtract(temp, ts.createLiteral(restIndex))), ts.createElementAccess(ts.createIdentifier("arguments"), temp))), + /*location*/ parameter)) + ])); + ts.setEmitFlags(forStatement, 1048576 /* CustomPrologue */); + ts.startOnNewLine(forStatement); + prologueStatements.push(forStatement); + if (parameter.name.kind !== 75 /* Identifier */) { + // do the actual destructuring of the rest parameter if necessary + prologueStatements.push(ts.setEmitFlags(ts.setTextRange(ts.createVariableStatement( + /*modifiers*/ undefined, ts.createVariableDeclarationList(ts.flattenDestructuringBinding(parameter, visitor, context, 0 /* All */, expressionName))), parameter), 1048576 /* CustomPrologue */)); + } + ts.insertStatementsAfterCustomPrologue(statements, prologueStatements); + return true; + } + /** + * Adds a statement to capture the `this` of a function declaration if it is needed. + * NOTE: This must be executed *after* the subtree has been visited. + * + * @param statements The statements for the new function body. + * @param node A node. + */ + function insertCaptureThisForNodeIfNeeded(statements, node) { + if (hierarchyFacts & 32768 /* CapturedLexicalThis */ && node.kind !== 202 /* ArrowFunction */) { + insertCaptureThisForNode(statements, node, ts.createThis()); + return true; + } + return false; + } + function insertCaptureThisForNode(statements, node, initializer) { + enableSubstitutionsForCapturedThis(); + var captureThisStatement = ts.createVariableStatement( + /*modifiers*/ undefined, ts.createVariableDeclarationList([ + ts.createVariableDeclaration(ts.createFileLevelUniqueName("_this"), + /*type*/ undefined, initializer) + ])); + ts.setEmitFlags(captureThisStatement, 1536 /* NoComments */ | 1048576 /* CustomPrologue */); + ts.setSourceMapRange(captureThisStatement, node); + ts.insertStatementAfterCustomPrologue(statements, captureThisStatement); + } + function insertCaptureNewTargetIfNeeded(statements, node, copyOnWrite) { + if (hierarchyFacts & 16384 /* NewTarget */) { + var newTarget = void 0; + switch (node.kind) { + case 202 /* ArrowFunction */: + return statements; + case 161 /* MethodDeclaration */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + // Methods and accessors cannot be constructors, so 'new.target' will + // always return 'undefined'. + newTarget = ts.createVoidZero(); + break; + case 162 /* Constructor */: + // Class constructors can only be called with `new`, so `this.constructor` + // should be relatively safe to use. + newTarget = ts.createPropertyAccess(ts.setEmitFlags(ts.createThis(), 4 /* NoSubstitution */), "constructor"); + break; + case 244 /* FunctionDeclaration */: + case 201 /* FunctionExpression */: + // Functions can be called or constructed, and may have a `this` due to + // being a member or when calling an imported function via `other_1.f()`. + newTarget = ts.createConditional(ts.createLogicalAnd(ts.setEmitFlags(ts.createThis(), 4 /* NoSubstitution */), ts.createBinary(ts.setEmitFlags(ts.createThis(), 4 /* NoSubstitution */), 98 /* InstanceOfKeyword */, ts.getLocalName(node))), ts.createPropertyAccess(ts.setEmitFlags(ts.createThis(), 4 /* NoSubstitution */), "constructor"), ts.createVoidZero()); + break; + default: + return ts.Debug.failBadSyntaxKind(node); + } + var captureNewTargetStatement = ts.createVariableStatement( + /*modifiers*/ undefined, ts.createVariableDeclarationList([ + ts.createVariableDeclaration(ts.createFileLevelUniqueName("_newTarget"), + /*type*/ undefined, newTarget) + ])); + ts.setEmitFlags(captureNewTargetStatement, 1536 /* NoComments */ | 1048576 /* CustomPrologue */); + if (copyOnWrite) { + statements = statements.slice(); + } + ts.insertStatementAfterCustomPrologue(statements, captureNewTargetStatement); + } + return statements; + } + /** + * Adds statements to the class body function for a class to define the members of the + * class. + * + * @param statements The statements for the class body function. + * @param node The ClassExpression or ClassDeclaration node. + */ + function addClassMembers(statements, node) { + for (var _i = 0, _a = node.members; _i < _a.length; _i++) { + var member = _a[_i]; + switch (member.kind) { + case 222 /* SemicolonClassElement */: + statements.push(transformSemicolonClassElementToStatement(member)); + break; + case 161 /* MethodDeclaration */: + statements.push(transformClassMethodDeclarationToStatement(getClassMemberPrefix(node, member), member, node)); + break; + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + var accessors = ts.getAllAccessorDeclarations(node.members, member); + if (member === accessors.firstAccessor) { + statements.push(transformAccessorsToStatement(getClassMemberPrefix(node, member), accessors, node)); + } + break; + case 162 /* Constructor */: + // Constructors are handled in visitClassExpression/visitClassDeclaration + break; + default: + ts.Debug.failBadSyntaxKind(member, currentSourceFile && currentSourceFile.fileName); + break; + } + } + } + /** + * Transforms a SemicolonClassElement into a statement for a class body function. + * + * @param member The SemicolonClassElement node. + */ + function transformSemicolonClassElementToStatement(member) { + return ts.setTextRange(ts.createEmptyStatement(), member); + } + /** + * Transforms a MethodDeclaration into a statement for a class body function. + * + * @param receiver The receiver for the member. + * @param member The MethodDeclaration node. + */ + function transformClassMethodDeclarationToStatement(receiver, member, container) { + var commentRange = ts.getCommentRange(member); + var sourceMapRange = ts.getSourceMapRange(member); + var memberFunction = transformFunctionLikeToExpression(member, /*location*/ member, /*name*/ undefined, container); + var propertyName = ts.visitNode(member.name, visitor, ts.isPropertyName); + var e; + if (!ts.isPrivateIdentifier(propertyName) && context.getCompilerOptions().useDefineForClassFields) { + var name = ts.isComputedPropertyName(propertyName) ? propertyName.expression + : ts.isIdentifier(propertyName) ? ts.createStringLiteral(ts.unescapeLeadingUnderscores(propertyName.escapedText)) + : propertyName; + e = ts.createObjectDefinePropertyCall(receiver, name, ts.createPropertyDescriptor({ value: memberFunction, enumerable: false, writable: true, configurable: true })); + } + else { + var memberName = ts.createMemberAccessForPropertyName(receiver, propertyName, /*location*/ member.name); + e = ts.createAssignment(memberName, memberFunction); + } + ts.setEmitFlags(memberFunction, 1536 /* NoComments */); + ts.setSourceMapRange(memberFunction, sourceMapRange); + var statement = ts.setTextRange(ts.createExpressionStatement(e), /*location*/ member); + ts.setOriginalNode(statement, member); + ts.setCommentRange(statement, commentRange); + // The location for the statement is used to emit comments only. + // No source map should be emitted for this statement to align with the + // old emitter. + ts.setEmitFlags(statement, 48 /* NoSourceMap */); + return statement; + } + /** + * Transforms a set of related of get/set accessors into a statement for a class body function. + * + * @param receiver The receiver for the member. + * @param accessors The set of related get/set accessors. + */ + function transformAccessorsToStatement(receiver, accessors, container) { + var statement = ts.createExpressionStatement(transformAccessorsToExpression(receiver, accessors, container, /*startsOnNewLine*/ false)); + // The location for the statement is used to emit source maps only. + // No comments should be emitted for this statement to align with the + // old emitter. + ts.setEmitFlags(statement, 1536 /* NoComments */); + ts.setSourceMapRange(statement, ts.getSourceMapRange(accessors.firstAccessor)); + return statement; + } + /** + * Transforms a set of related get/set accessors into an expression for either a class + * body function or an ObjectLiteralExpression with computed properties. + * + * @param receiver The receiver for the member. + */ + function transformAccessorsToExpression(receiver, _a, container, startsOnNewLine) { + var firstAccessor = _a.firstAccessor, getAccessor = _a.getAccessor, setAccessor = _a.setAccessor; + // To align with source maps in the old emitter, the receiver and property name + // arguments are both mapped contiguously to the accessor name. + var target = ts.getMutableClone(receiver); + ts.setEmitFlags(target, 1536 /* NoComments */ | 32 /* NoTrailingSourceMap */); + ts.setSourceMapRange(target, firstAccessor.name); + var visitedAccessorName = ts.visitNode(firstAccessor.name, visitor, ts.isPropertyName); + if (ts.isPrivateIdentifier(visitedAccessorName)) { + return ts.Debug.failBadSyntaxKind(visitedAccessorName, "Encountered unhandled private identifier while transforming ES2015."); + } + var propertyName = ts.createExpressionForPropertyName(visitedAccessorName); + ts.setEmitFlags(propertyName, 1536 /* NoComments */ | 16 /* NoLeadingSourceMap */); + ts.setSourceMapRange(propertyName, firstAccessor.name); + var properties = []; + if (getAccessor) { + var getterFunction = transformFunctionLikeToExpression(getAccessor, /*location*/ undefined, /*name*/ undefined, container); + ts.setSourceMapRange(getterFunction, ts.getSourceMapRange(getAccessor)); + ts.setEmitFlags(getterFunction, 512 /* NoLeadingComments */); + var getter = ts.createPropertyAssignment("get", getterFunction); + ts.setCommentRange(getter, ts.getCommentRange(getAccessor)); + properties.push(getter); + } + if (setAccessor) { + var setterFunction = transformFunctionLikeToExpression(setAccessor, /*location*/ undefined, /*name*/ undefined, container); + ts.setSourceMapRange(setterFunction, ts.getSourceMapRange(setAccessor)); + ts.setEmitFlags(setterFunction, 512 /* NoLeadingComments */); + var setter = ts.createPropertyAssignment("set", setterFunction); + ts.setCommentRange(setter, ts.getCommentRange(setAccessor)); + properties.push(setter); + } + properties.push(ts.createPropertyAssignment("enumerable", getAccessor || setAccessor ? ts.createFalse() : ts.createTrue()), ts.createPropertyAssignment("configurable", ts.createTrue())); + var call = ts.createCall(ts.createPropertyAccess(ts.createIdentifier("Object"), "defineProperty"), + /*typeArguments*/ undefined, [ + target, + propertyName, + ts.createObjectLiteral(properties, /*multiLine*/ true) + ]); + if (startsOnNewLine) { + ts.startOnNewLine(call); + } + return call; + } + /** + * Visits an ArrowFunction and transforms it into a FunctionExpression. + * + * @param node An ArrowFunction node. + */ + function visitArrowFunction(node) { + if (node.transformFlags & 4096 /* ContainsLexicalThis */) { + hierarchyFacts |= 32768 /* CapturedLexicalThis */; + } + var savedConvertedLoopState = convertedLoopState; + convertedLoopState = undefined; + var ancestorFacts = enterSubtree(15232 /* ArrowFunctionExcludes */, 66 /* ArrowFunctionIncludes */); + var func = ts.createFunctionExpression( + /*modifiers*/ undefined, + /*asteriskToken*/ undefined, + /*name*/ undefined, + /*typeParameters*/ undefined, ts.visitParameterList(node.parameters, visitor, context), + /*type*/ undefined, transformFunctionBody(node)); + ts.setTextRange(func, node); + ts.setOriginalNode(func, node); + ts.setEmitFlags(func, 8 /* CapturesThis */); + if (hierarchyFacts & 32768 /* CapturedLexicalThis */) { + enableSubstitutionsForCapturedThis(); + } + // If an arrow function contains + exitSubtree(ancestorFacts, 0 /* ArrowFunctionSubtreeExcludes */, 0 /* None */); + convertedLoopState = savedConvertedLoopState; + return func; + } + /** + * Visits a FunctionExpression node. + * + * @param node a FunctionExpression node. + */ + function visitFunctionExpression(node) { + var ancestorFacts = ts.getEmitFlags(node) & 262144 /* AsyncFunctionBody */ + ? enterSubtree(16278 /* AsyncFunctionBodyExcludes */, 69 /* AsyncFunctionBodyIncludes */) + : enterSubtree(16286 /* FunctionExcludes */, 65 /* FunctionIncludes */); + var savedConvertedLoopState = convertedLoopState; + convertedLoopState = undefined; + var parameters = ts.visitParameterList(node.parameters, visitor, context); + var body = transformFunctionBody(node); + var name = hierarchyFacts & 16384 /* NewTarget */ + ? ts.getLocalName(node) + : node.name; + exitSubtree(ancestorFacts, 49152 /* FunctionSubtreeExcludes */, 0 /* None */); + convertedLoopState = savedConvertedLoopState; + return ts.updateFunctionExpression(node, + /*modifiers*/ undefined, node.asteriskToken, name, + /*typeParameters*/ undefined, parameters, + /*type*/ undefined, body); + } + /** + * Visits a FunctionDeclaration node. + * + * @param node a FunctionDeclaration node. + */ + function visitFunctionDeclaration(node) { + var savedConvertedLoopState = convertedLoopState; + convertedLoopState = undefined; + var ancestorFacts = enterSubtree(16286 /* FunctionExcludes */, 65 /* FunctionIncludes */); + var parameters = ts.visitParameterList(node.parameters, visitor, context); + var body = transformFunctionBody(node); + var name = hierarchyFacts & 16384 /* NewTarget */ + ? ts.getLocalName(node) + : node.name; + exitSubtree(ancestorFacts, 49152 /* FunctionSubtreeExcludes */, 0 /* None */); + convertedLoopState = savedConvertedLoopState; + return ts.updateFunctionDeclaration(node, + /*decorators*/ undefined, ts.visitNodes(node.modifiers, visitor, ts.isModifier), node.asteriskToken, name, + /*typeParameters*/ undefined, parameters, + /*type*/ undefined, body); + } + /** + * Transforms a function-like node into a FunctionExpression. + * + * @param node The function-like node to transform. + * @param location The source-map location for the new FunctionExpression. + * @param name The name of the new FunctionExpression. + */ + function transformFunctionLikeToExpression(node, location, name, container) { + var savedConvertedLoopState = convertedLoopState; + convertedLoopState = undefined; + var ancestorFacts = container && ts.isClassLike(container) && !ts.hasModifier(node, 32 /* Static */) + ? enterSubtree(16286 /* FunctionExcludes */, 65 /* FunctionIncludes */ | 8 /* NonStaticClassElement */) + : enterSubtree(16286 /* FunctionExcludes */, 65 /* FunctionIncludes */); + var parameters = ts.visitParameterList(node.parameters, visitor, context); + var body = transformFunctionBody(node); + if (hierarchyFacts & 16384 /* NewTarget */ && !name && (node.kind === 244 /* FunctionDeclaration */ || node.kind === 201 /* FunctionExpression */)) { + name = ts.getGeneratedNameForNode(node); + } + exitSubtree(ancestorFacts, 49152 /* FunctionSubtreeExcludes */, 0 /* None */); + convertedLoopState = savedConvertedLoopState; + return ts.setOriginalNode(ts.setTextRange(ts.createFunctionExpression( + /*modifiers*/ undefined, node.asteriskToken, name, + /*typeParameters*/ undefined, parameters, + /*type*/ undefined, body), location), + /*original*/ node); + } + /** + * Transforms the body of a function-like node. + * + * @param node A function-like node. + */ + function transformFunctionBody(node) { + var multiLine = false; // indicates whether the block *must* be emitted as multiple lines + var singleLine = false; // indicates whether the block *may* be emitted as a single line + var statementsLocation; + var closeBraceLocation; + var prologue = []; + var statements = []; + var body = node.body; + var statementOffset; + resumeLexicalEnvironment(); + if (ts.isBlock(body)) { + // ensureUseStrict is false because no new prologue-directive should be added. + // addStandardPrologue will put already-existing directives at the beginning of the target statement-array + statementOffset = ts.addStandardPrologue(prologue, body.statements, /*ensureUseStrict*/ false); + statementOffset = ts.addCustomPrologue(statements, body.statements, statementOffset, visitor, ts.isHoistedFunction); + statementOffset = ts.addCustomPrologue(statements, body.statements, statementOffset, visitor, ts.isHoistedVariableStatement); + } + multiLine = addDefaultValueAssignmentsIfNeeded(statements, node) || multiLine; + multiLine = addRestParameterIfNeeded(statements, node, /*inConstructorWithSynthesizedSuper*/ false) || multiLine; + if (ts.isBlock(body)) { + // addCustomPrologue puts already-existing directives at the beginning of the target statement-array + statementOffset = ts.addCustomPrologue(statements, body.statements, statementOffset, visitor); + statementsLocation = body.statements; + ts.addRange(statements, ts.visitNodes(body.statements, visitor, ts.isStatement, statementOffset)); + // If the original body was a multi-line block, this must be a multi-line block. + if (!multiLine && body.multiLine) { + multiLine = true; + } + } + else { + ts.Debug.assert(node.kind === 202 /* ArrowFunction */); + // To align with the old emitter, we use a synthetic end position on the location + // for the statement list we synthesize when we down-level an arrow function with + // an expression function body. This prevents both comments and source maps from + // being emitted for the end position only. + statementsLocation = ts.moveRangeEnd(body, -1); + var equalsGreaterThanToken = node.equalsGreaterThanToken; + if (!ts.nodeIsSynthesized(equalsGreaterThanToken) && !ts.nodeIsSynthesized(body)) { + if (ts.rangeEndIsOnSameLineAsRangeStart(equalsGreaterThanToken, body, currentSourceFile)) { + singleLine = true; + } + else { + multiLine = true; + } + } + var expression = ts.visitNode(body, visitor, ts.isExpression); + var returnStatement = ts.createReturn(expression); + ts.setTextRange(returnStatement, body); + ts.moveSyntheticComments(returnStatement, body); + ts.setEmitFlags(returnStatement, 384 /* NoTokenSourceMaps */ | 32 /* NoTrailingSourceMap */ | 1024 /* NoTrailingComments */); + statements.push(returnStatement); + // To align with the source map emit for the old emitter, we set a custom + // source map location for the close brace. + closeBraceLocation = body; + } + ts.mergeLexicalEnvironment(prologue, endLexicalEnvironment()); + insertCaptureNewTargetIfNeeded(prologue, node, /*copyOnWrite*/ false); + insertCaptureThisForNodeIfNeeded(prologue, node); + // If we added any final generated statements, this must be a multi-line block + if (ts.some(prologue)) { + multiLine = true; + } + statements.unshift.apply(statements, prologue); + if (ts.isBlock(body) && ts.arrayIsEqualTo(statements, body.statements)) { + // no changes were made, preserve the tree + return body; + } + var block = ts.createBlock(ts.setTextRange(ts.createNodeArray(statements), statementsLocation), multiLine); + ts.setTextRange(block, node.body); + if (!multiLine && singleLine) { + ts.setEmitFlags(block, 1 /* SingleLine */); + } + if (closeBraceLocation) { + ts.setTokenSourceMapRange(block, 19 /* CloseBraceToken */, closeBraceLocation); + } + ts.setOriginalNode(block, node.body); + return block; + } + function visitBlock(node, isFunctionBody) { + if (isFunctionBody) { + // A function body is not a block scope. + return ts.visitEachChild(node, visitor, context); + } + var ancestorFacts = hierarchyFacts & 256 /* IterationStatement */ + ? enterSubtree(7104 /* IterationStatementBlockExcludes */, 512 /* IterationStatementBlockIncludes */) + : enterSubtree(6976 /* BlockExcludes */, 128 /* BlockIncludes */); + var updated = ts.visitEachChild(node, visitor, context); + exitSubtree(ancestorFacts, 0 /* None */, 0 /* None */); + return updated; + } + /** + * Visits an ExpressionStatement that contains a destructuring assignment. + * + * @param node An ExpressionStatement node. + */ + function visitExpressionStatement(node) { + // If we are here it is most likely because our expression is a destructuring assignment. + switch (node.expression.kind) { + case 200 /* ParenthesizedExpression */: + return ts.updateExpressionStatement(node, visitParenthesizedExpression(node.expression, /*needsDestructuringValue*/ false)); + case 209 /* BinaryExpression */: + return ts.updateExpressionStatement(node, visitBinaryExpression(node.expression, /*needsDestructuringValue*/ false)); + } + return ts.visitEachChild(node, visitor, context); + } + /** + * Visits a ParenthesizedExpression that may contain a destructuring assignment. + * + * @param node A ParenthesizedExpression node. + * @param needsDestructuringValue A value indicating whether we need to hold onto the rhs + * of a destructuring assignment. + */ + function visitParenthesizedExpression(node, needsDestructuringValue) { + // If we are here it is most likely because our expression is a destructuring assignment. + if (!needsDestructuringValue) { + // By default we always emit the RHS at the end of a flattened destructuring + // expression. If we are in a state where we do not need the destructuring value, + // we pass that information along to the children that care about it. + switch (node.expression.kind) { + case 200 /* ParenthesizedExpression */: + return ts.updateParen(node, visitParenthesizedExpression(node.expression, /*needsDestructuringValue*/ false)); + case 209 /* BinaryExpression */: + return ts.updateParen(node, visitBinaryExpression(node.expression, /*needsDestructuringValue*/ false)); + } + } + return ts.visitEachChild(node, visitor, context); + } + /** + * Visits a BinaryExpression that contains a destructuring assignment. + * + * @param node A BinaryExpression node. + * @param needsDestructuringValue A value indicating whether we need to hold onto the rhs + * of a destructuring assignment. + */ + function visitBinaryExpression(node, needsDestructuringValue) { + // If we are here it is because this is a destructuring assignment. + if (ts.isDestructuringAssignment(node)) { + return ts.flattenDestructuringAssignment(node, visitor, context, 0 /* All */, needsDestructuringValue); + } + return ts.visitEachChild(node, visitor, context); + } + function isVariableStatementOfTypeScriptClassWrapper(node) { + return node.declarationList.declarations.length === 1 + && !!node.declarationList.declarations[0].initializer + && !!(ts.getEmitFlags(node.declarationList.declarations[0].initializer) & 33554432 /* TypeScriptClassWrapper */); + } + function visitVariableStatement(node) { + var ancestorFacts = enterSubtree(0 /* None */, ts.hasModifier(node, 1 /* Export */) ? 32 /* ExportedVariableStatement */ : 0 /* None */); + var updated; + if (convertedLoopState && (node.declarationList.flags & 3 /* BlockScoped */) === 0 && !isVariableStatementOfTypeScriptClassWrapper(node)) { + // we are inside a converted loop - hoist variable declarations + var assignments = void 0; + for (var _i = 0, _a = node.declarationList.declarations; _i < _a.length; _i++) { + var decl = _a[_i]; + hoistVariableDeclarationDeclaredInConvertedLoop(convertedLoopState, decl); + if (decl.initializer) { + var assignment = void 0; + if (ts.isBindingPattern(decl.name)) { + assignment = ts.flattenDestructuringAssignment(decl, visitor, context, 0 /* All */); + } + else { + assignment = ts.createBinary(decl.name, 62 /* EqualsToken */, ts.visitNode(decl.initializer, visitor, ts.isExpression)); + ts.setTextRange(assignment, decl); + } + assignments = ts.append(assignments, assignment); + } + } + if (assignments) { + updated = ts.setTextRange(ts.createExpressionStatement(ts.inlineExpressions(assignments)), node); + } + else { + // none of declarations has initializer - the entire variable statement can be deleted + updated = undefined; + } + } + else { + updated = ts.visitEachChild(node, visitor, context); + } + exitSubtree(ancestorFacts, 0 /* None */, 0 /* None */); + return updated; + } + /** + * Visits a VariableDeclarationList that is block scoped (e.g. `let` or `const`). + * + * @param node A VariableDeclarationList node. + */ + function visitVariableDeclarationList(node) { + if (node.flags & 3 /* BlockScoped */ || node.transformFlags & 131072 /* ContainsBindingPattern */) { + if (node.flags & 3 /* BlockScoped */) { + enableSubstitutionsForBlockScopedBindings(); + } + var declarations = ts.flatMap(node.declarations, node.flags & 1 /* Let */ + ? visitVariableDeclarationInLetDeclarationList + : visitVariableDeclaration); + var declarationList = ts.createVariableDeclarationList(declarations); + ts.setOriginalNode(declarationList, node); + ts.setTextRange(declarationList, node); + ts.setCommentRange(declarationList, node); + // If the first or last declaration is a binding pattern, we need to modify + // the source map range for the declaration list. + if (node.transformFlags & 131072 /* ContainsBindingPattern */ + && (ts.isBindingPattern(node.declarations[0].name) || ts.isBindingPattern(ts.last(node.declarations).name))) { + ts.setSourceMapRange(declarationList, getRangeUnion(declarations)); + } + return declarationList; + } + return ts.visitEachChild(node, visitor, context); + } + function getRangeUnion(declarations) { + // declarations may not be sorted by position. + // pos should be the minimum* position over all nodes (that's not -1), end should be the maximum end over all nodes. + var pos = -1, end = -1; + for (var _i = 0, declarations_10 = declarations; _i < declarations_10.length; _i++) { + var node = declarations_10[_i]; + pos = pos === -1 ? node.pos : node.pos === -1 ? pos : Math.min(pos, node.pos); + end = Math.max(end, node.end); + } + return ts.createRange(pos, end); + } + /** + * Gets a value indicating whether we should emit an explicit initializer for a variable + * declaration in a `let` declaration list. + * + * @param node A VariableDeclaration node. + */ + function shouldEmitExplicitInitializerForLetDeclaration(node) { + // Nested let bindings might need to be initialized explicitly to preserve + // ES6 semantic: + // + // { let x = 1; } + // { let x; } // x here should be undefined. not 1 + // + // Top level bindings never collide with anything and thus don't require + // explicit initialization. As for nested let bindings there are two cases: + // + // - Nested let bindings that were not renamed definitely should be + // initialized explicitly: + // + // { let x = 1; } + // { let x; if (some-condition) { x = 1}; if (x) { /*1*/ } } + // + // Without explicit initialization code in /*1*/ can be executed even if + // some-condition is evaluated to false. + // + // - Renaming introduces fresh name that should not collide with any + // existing names, however renamed bindings sometimes also should be + // explicitly initialized. One particular case: non-captured binding + // declared inside loop body (but not in loop initializer): + // + // let x; + // for (;;) { + // let x; + // } + // + // In downlevel codegen inner 'x' will be renamed so it won't collide + // with outer 'x' however it will should be reset on every iteration as + // if it was declared anew. + // + // * Why non-captured binding? + // - Because if loop contains block scoped binding captured in some + // function then loop body will be rewritten to have a fresh scope + // on every iteration so everything will just work. + // + // * Why loop initializer is excluded? + // - Since we've introduced a fresh name it already will be undefined. + var flags = resolver.getNodeCheckFlags(node); + var isCapturedInFunction = flags & 262144 /* CapturedBlockScopedBinding */; + var isDeclaredInLoop = flags & 524288 /* BlockScopedBindingInLoop */; + var emittedAsTopLevel = (hierarchyFacts & 64 /* TopLevel */) !== 0 + || (isCapturedInFunction + && isDeclaredInLoop + && (hierarchyFacts & 512 /* IterationStatementBlock */) !== 0); + var emitExplicitInitializer = !emittedAsTopLevel + && (hierarchyFacts & 4096 /* ForInOrForOfStatement */) === 0 + && (!resolver.isDeclarationWithCollidingName(node) + || (isDeclaredInLoop + && !isCapturedInFunction + && (hierarchyFacts & (2048 /* ForStatement */ | 4096 /* ForInOrForOfStatement */)) === 0)); + return emitExplicitInitializer; + } + /** + * Visits a VariableDeclaration in a `let` declaration list. + * + * @param node A VariableDeclaration node. + */ + function visitVariableDeclarationInLetDeclarationList(node) { + // For binding pattern names that lack initializers there is no point to emit + // explicit initializer since downlevel codegen for destructuring will fail + // in the absence of initializer so all binding elements will say uninitialized + var name = node.name; + if (ts.isBindingPattern(name)) { + return visitVariableDeclaration(node); + } + if (!node.initializer && shouldEmitExplicitInitializerForLetDeclaration(node)) { + var clone_3 = ts.getMutableClone(node); + clone_3.initializer = ts.createVoidZero(); + return clone_3; + } + return ts.visitEachChild(node, visitor, context); + } + /** + * Visits a VariableDeclaration node with a binding pattern. + * + * @param node A VariableDeclaration node. + */ + function visitVariableDeclaration(node) { + var ancestorFacts = enterSubtree(32 /* ExportedVariableStatement */, 0 /* None */); + var updated; + if (ts.isBindingPattern(node.name)) { + updated = ts.flattenDestructuringBinding(node, visitor, context, 0 /* All */, + /*value*/ undefined, (ancestorFacts & 32 /* ExportedVariableStatement */) !== 0); + } + else { + updated = ts.visitEachChild(node, visitor, context); + } + exitSubtree(ancestorFacts, 0 /* None */, 0 /* None */); + return updated; + } + function recordLabel(node) { + convertedLoopState.labels.set(ts.idText(node.label), true); + } + function resetLabel(node) { + convertedLoopState.labels.set(ts.idText(node.label), false); + } + function visitLabeledStatement(node) { + if (convertedLoopState && !convertedLoopState.labels) { + convertedLoopState.labels = ts.createMap(); + } + var statement = ts.unwrapInnermostStatementOfLabel(node, convertedLoopState && recordLabel); + return ts.isIterationStatement(statement, /*lookInLabeledStatements*/ false) + ? visitIterationStatement(statement, /*outermostLabeledStatement*/ node) + : ts.restoreEnclosingLabel(ts.visitNode(statement, visitor, ts.isStatement, ts.liftToBlock), node, convertedLoopState && resetLabel); + } + function visitIterationStatement(node, outermostLabeledStatement) { + switch (node.kind) { + case 228 /* DoStatement */: + case 229 /* WhileStatement */: + return visitDoOrWhileStatement(node, outermostLabeledStatement); + case 230 /* ForStatement */: + return visitForStatement(node, outermostLabeledStatement); + case 231 /* ForInStatement */: + return visitForInStatement(node, outermostLabeledStatement); + case 232 /* ForOfStatement */: + return visitForOfStatement(node, outermostLabeledStatement); + } + } + function visitIterationStatementWithFacts(excludeFacts, includeFacts, node, outermostLabeledStatement, convert) { + var ancestorFacts = enterSubtree(excludeFacts, includeFacts); + var updated = convertIterationStatementBodyIfNecessary(node, outermostLabeledStatement, ancestorFacts, convert); + exitSubtree(ancestorFacts, 0 /* None */, 0 /* None */); + return updated; + } + function visitDoOrWhileStatement(node, outermostLabeledStatement) { + return visitIterationStatementWithFacts(0 /* DoOrWhileStatementExcludes */, 1280 /* DoOrWhileStatementIncludes */, node, outermostLabeledStatement); + } + function visitForStatement(node, outermostLabeledStatement) { + return visitIterationStatementWithFacts(5056 /* ForStatementExcludes */, 3328 /* ForStatementIncludes */, node, outermostLabeledStatement); + } + function visitForInStatement(node, outermostLabeledStatement) { + return visitIterationStatementWithFacts(3008 /* ForInOrForOfStatementExcludes */, 5376 /* ForInOrForOfStatementIncludes */, node, outermostLabeledStatement); + } + function visitForOfStatement(node, outermostLabeledStatement) { + return visitIterationStatementWithFacts(3008 /* ForInOrForOfStatementExcludes */, 5376 /* ForInOrForOfStatementIncludes */, node, outermostLabeledStatement, compilerOptions.downlevelIteration ? convertForOfStatementForIterable : convertForOfStatementForArray); + } + function convertForOfStatementHead(node, boundValue, convertedLoopBodyStatements) { + var statements = []; + var initializer = node.initializer; + if (ts.isVariableDeclarationList(initializer)) { + if (node.initializer.flags & 3 /* BlockScoped */) { + enableSubstitutionsForBlockScopedBindings(); + } + var firstOriginalDeclaration = ts.firstOrUndefined(initializer.declarations); + if (firstOriginalDeclaration && ts.isBindingPattern(firstOriginalDeclaration.name)) { + // This works whether the declaration is a var, let, or const. + // It will use rhsIterationValue _a[_i] as the initializer. + var declarations = ts.flattenDestructuringBinding(firstOriginalDeclaration, visitor, context, 0 /* All */, boundValue); + var declarationList = ts.setTextRange(ts.createVariableDeclarationList(declarations), node.initializer); + ts.setOriginalNode(declarationList, node.initializer); + // Adjust the source map range for the first declaration to align with the old + // emitter. + ts.setSourceMapRange(declarationList, ts.createRange(declarations[0].pos, ts.last(declarations).end)); + statements.push(ts.createVariableStatement( + /*modifiers*/ undefined, declarationList)); + } + else { + // The following call does not include the initializer, so we have + // to emit it separately. + statements.push(ts.setTextRange(ts.createVariableStatement( + /*modifiers*/ undefined, ts.setOriginalNode(ts.setTextRange(ts.createVariableDeclarationList([ + ts.createVariableDeclaration(firstOriginalDeclaration ? firstOriginalDeclaration.name : ts.createTempVariable(/*recordTempVariable*/ undefined), + /*type*/ undefined, boundValue) + ]), ts.moveRangePos(initializer, -1)), initializer)), ts.moveRangeEnd(initializer, -1))); + } + } + else { + // Initializer is an expression. Emit the expression in the body, so that it's + // evaluated on every iteration. + var assignment = ts.createAssignment(initializer, boundValue); + if (ts.isDestructuringAssignment(assignment)) { + ts.aggregateTransformFlags(assignment); + statements.push(ts.createExpressionStatement(visitBinaryExpression(assignment, /*needsDestructuringValue*/ false))); + } + else { + assignment.end = initializer.end; + statements.push(ts.setTextRange(ts.createExpressionStatement(ts.visitNode(assignment, visitor, ts.isExpression)), ts.moveRangeEnd(initializer, -1))); + } + } + if (convertedLoopBodyStatements) { + return createSyntheticBlockForConvertedStatements(ts.addRange(statements, convertedLoopBodyStatements)); + } + else { + var statement = ts.visitNode(node.statement, visitor, ts.isStatement, ts.liftToBlock); + if (ts.isBlock(statement)) { + return ts.updateBlock(statement, ts.setTextRange(ts.createNodeArray(ts.concatenate(statements, statement.statements)), statement.statements)); + } + else { + statements.push(statement); + return createSyntheticBlockForConvertedStatements(statements); + } + } + } + function createSyntheticBlockForConvertedStatements(statements) { + return ts.setEmitFlags(ts.createBlock(ts.createNodeArray(statements), + /*multiLine*/ true), 48 /* NoSourceMap */ | 384 /* NoTokenSourceMaps */); + } + function convertForOfStatementForArray(node, outermostLabeledStatement, convertedLoopBodyStatements) { + // The following ES6 code: + // + // for (let v of expr) { } + // + // should be emitted as + // + // for (var _i = 0, _a = expr; _i < _a.length; _i++) { + // var v = _a[_i]; + // } + // + // where _a and _i are temps emitted to capture the RHS and the counter, + // respectively. + // When the left hand side is an expression instead of a let declaration, + // the "let v" is not emitted. + // When the left hand side is a let/const, the v is renamed if there is + // another v in scope. + // Note that all assignments to the LHS are emitted in the body, including + // all destructuring. + // Note also that because an extra statement is needed to assign to the LHS, + // for-of bodies are always emitted as blocks. + var expression = ts.visitNode(node.expression, visitor, ts.isExpression); + // In the case where the user wrote an identifier as the RHS, like this: + // + // for (let v of arr) { } + // + // we don't want to emit a temporary variable for the RHS, just use it directly. + var counter = ts.createLoopVariable(); + var rhsReference = ts.isIdentifier(expression) ? ts.getGeneratedNameForNode(expression) : ts.createTempVariable(/*recordTempVariable*/ undefined); + // The old emitter does not emit source maps for the expression + ts.setEmitFlags(expression, 48 /* NoSourceMap */ | ts.getEmitFlags(expression)); + var forStatement = ts.setTextRange(ts.createFor( + /*initializer*/ ts.setEmitFlags(ts.setTextRange(ts.createVariableDeclarationList([ + ts.setTextRange(ts.createVariableDeclaration(counter, /*type*/ undefined, ts.createLiteral(0)), ts.moveRangePos(node.expression, -1)), + ts.setTextRange(ts.createVariableDeclaration(rhsReference, /*type*/ undefined, expression), node.expression) + ]), node.expression), 2097152 /* NoHoisting */), + /*condition*/ ts.setTextRange(ts.createLessThan(counter, ts.createPropertyAccess(rhsReference, "length")), node.expression), + /*incrementor*/ ts.setTextRange(ts.createPostfixIncrement(counter), node.expression), + /*statement*/ convertForOfStatementHead(node, ts.createElementAccess(rhsReference, counter), convertedLoopBodyStatements)), + /*location*/ node); + // Disable trailing source maps for the OpenParenToken to align source map emit with the old emitter. + ts.setEmitFlags(forStatement, 256 /* NoTokenTrailingSourceMaps */); + ts.setTextRange(forStatement, node); + return ts.restoreEnclosingLabel(forStatement, outermostLabeledStatement, convertedLoopState && resetLabel); + } + function convertForOfStatementForIterable(node, outermostLabeledStatement, convertedLoopBodyStatements, ancestorFacts) { + var expression = ts.visitNode(node.expression, visitor, ts.isExpression); + var iterator = ts.isIdentifier(expression) ? ts.getGeneratedNameForNode(expression) : ts.createTempVariable(/*recordTempVariable*/ undefined); + var result = ts.isIdentifier(expression) ? ts.getGeneratedNameForNode(iterator) : ts.createTempVariable(/*recordTempVariable*/ undefined); + var errorRecord = ts.createUniqueName("e"); + var catchVariable = ts.getGeneratedNameForNode(errorRecord); + var returnMethod = ts.createTempVariable(/*recordTempVariable*/ undefined); + var values = ts.createValuesHelper(context, expression, node.expression); + var next = ts.createCall(ts.createPropertyAccess(iterator, "next"), /*typeArguments*/ undefined, []); + hoistVariableDeclaration(errorRecord); + hoistVariableDeclaration(returnMethod); + // if we are enclosed in an outer loop ensure we reset 'errorRecord' per each iteration + var initializer = ancestorFacts & 1024 /* IterationContainer */ + ? ts.inlineExpressions([ts.createAssignment(errorRecord, ts.createVoidZero()), values]) + : values; + var forStatement = ts.setEmitFlags(ts.setTextRange(ts.createFor( + /*initializer*/ ts.setEmitFlags(ts.setTextRange(ts.createVariableDeclarationList([ + ts.setTextRange(ts.createVariableDeclaration(iterator, /*type*/ undefined, initializer), node.expression), + ts.createVariableDeclaration(result, /*type*/ undefined, next) + ]), node.expression), 2097152 /* NoHoisting */), + /*condition*/ ts.createLogicalNot(ts.createPropertyAccess(result, "done")), + /*incrementor*/ ts.createAssignment(result, next), + /*statement*/ convertForOfStatementHead(node, ts.createPropertyAccess(result, "value"), convertedLoopBodyStatements)), + /*location*/ node), 256 /* NoTokenTrailingSourceMaps */); + return ts.createTry(ts.createBlock([ + ts.restoreEnclosingLabel(forStatement, outermostLabeledStatement, convertedLoopState && resetLabel) + ]), ts.createCatchClause(ts.createVariableDeclaration(catchVariable), ts.setEmitFlags(ts.createBlock([ + ts.createExpressionStatement(ts.createAssignment(errorRecord, ts.createObjectLiteral([ + ts.createPropertyAssignment("error", catchVariable) + ]))) + ]), 1 /* SingleLine */)), ts.createBlock([ + ts.createTry( + /*tryBlock*/ ts.createBlock([ + ts.setEmitFlags(ts.createIf(ts.createLogicalAnd(ts.createLogicalAnd(result, ts.createLogicalNot(ts.createPropertyAccess(result, "done"))), ts.createAssignment(returnMethod, ts.createPropertyAccess(iterator, "return"))), ts.createExpressionStatement(ts.createFunctionCall(returnMethod, iterator, []))), 1 /* SingleLine */), + ]), + /*catchClause*/ undefined, + /*finallyBlock*/ ts.setEmitFlags(ts.createBlock([ + ts.setEmitFlags(ts.createIf(errorRecord, ts.createThrow(ts.createPropertyAccess(errorRecord, "error"))), 1 /* SingleLine */) + ]), 1 /* SingleLine */)) + ])); + } + /** + * Visits an ObjectLiteralExpression with computed property names. + * + * @param node An ObjectLiteralExpression node. + */ + function visitObjectLiteralExpression(node) { + // We are here because a ComputedPropertyName was used somewhere in the expression. + var properties = node.properties; + var numProperties = properties.length; + // Find the first computed property. + // Everything until that point can be emitted as part of the initial object literal. + var numInitialProperties = numProperties; + var numInitialPropertiesWithoutYield = numProperties; + for (var i = 0; i < numProperties; i++) { + var property = properties[i]; + if ((property.transformFlags & 262144 /* ContainsYield */ && hierarchyFacts & 4 /* AsyncFunctionBody */) + && i < numInitialPropertiesWithoutYield) { + numInitialPropertiesWithoutYield = i; + } + if (property.name.kind === 154 /* ComputedPropertyName */) { + numInitialProperties = i; + break; + } + } + if (numInitialProperties !== numProperties) { + if (numInitialPropertiesWithoutYield < numInitialProperties) { + numInitialProperties = numInitialPropertiesWithoutYield; + } + // For computed properties, we need to create a unique handle to the object + // literal so we can modify it without risking internal assignments tainting the object. + var temp = ts.createTempVariable(hoistVariableDeclaration); + // Write out the first non-computed properties, then emit the rest through indexing on the temp variable. + var expressions = []; + var assignment = ts.createAssignment(temp, ts.setEmitFlags(ts.createObjectLiteral(ts.visitNodes(properties, visitor, ts.isObjectLiteralElementLike, 0, numInitialProperties), node.multiLine), 65536 /* Indented */)); + if (node.multiLine) { + ts.startOnNewLine(assignment); + } + expressions.push(assignment); + addObjectLiteralMembers(expressions, node, temp, numInitialProperties); + // We need to clone the temporary identifier so that we can write it on a + // new line + expressions.push(node.multiLine ? ts.startOnNewLine(ts.getMutableClone(temp)) : temp); + return ts.inlineExpressions(expressions); + } + return ts.visitEachChild(node, visitor, context); + } + function shouldConvertPartOfIterationStatement(node) { + return (resolver.getNodeCheckFlags(node) & 131072 /* ContainsCapturedBlockScopeBinding */) !== 0; + } + function shouldConvertInitializerOfForStatement(node) { + return ts.isForStatement(node) && !!node.initializer && shouldConvertPartOfIterationStatement(node.initializer); + } + function shouldConvertConditionOfForStatement(node) { + return ts.isForStatement(node) && !!node.condition && shouldConvertPartOfIterationStatement(node.condition); + } + function shouldConvertIncrementorOfForStatement(node) { + return ts.isForStatement(node) && !!node.incrementor && shouldConvertPartOfIterationStatement(node.incrementor); + } + function shouldConvertIterationStatement(node) { + return shouldConvertBodyOfIterationStatement(node) + || shouldConvertInitializerOfForStatement(node); + } + function shouldConvertBodyOfIterationStatement(node) { + return (resolver.getNodeCheckFlags(node) & 65536 /* LoopWithCapturedBlockScopedBinding */) !== 0; + } + /** + * Records constituents of name for the given variable to be hoisted in the outer scope. + */ + function hoistVariableDeclarationDeclaredInConvertedLoop(state, node) { + if (!state.hoistedLocalVariables) { + state.hoistedLocalVariables = []; + } + visit(node.name); + function visit(node) { + if (node.kind === 75 /* Identifier */) { + state.hoistedLocalVariables.push(node); + } + else { + for (var _i = 0, _a = node.elements; _i < _a.length; _i++) { + var element = _a[_i]; + if (!ts.isOmittedExpression(element)) { + visit(element.name); + } + } + } + } + } + function convertIterationStatementBodyIfNecessary(node, outermostLabeledStatement, ancestorFacts, convert) { + if (!shouldConvertIterationStatement(node)) { + var saveAllowedNonLabeledJumps = void 0; + if (convertedLoopState) { + // we get here if we are trying to emit normal loop loop inside converted loop + // set allowedNonLabeledJumps to Break | Continue to mark that break\continue inside the loop should be emitted as is + saveAllowedNonLabeledJumps = convertedLoopState.allowedNonLabeledJumps; + convertedLoopState.allowedNonLabeledJumps = 2 /* Break */ | 4 /* Continue */; + } + var result = convert + ? convert(node, outermostLabeledStatement, /*convertedLoopBodyStatements*/ undefined, ancestorFacts) + : ts.restoreEnclosingLabel(ts.visitEachChild(node, visitor, context), outermostLabeledStatement, convertedLoopState && resetLabel); + if (convertedLoopState) { + convertedLoopState.allowedNonLabeledJumps = saveAllowedNonLabeledJumps; + } + return result; + } + var currentState = createConvertedLoopState(node); + var statements = []; + var outerConvertedLoopState = convertedLoopState; + convertedLoopState = currentState; + var initializerFunction = shouldConvertInitializerOfForStatement(node) ? createFunctionForInitializerOfForStatement(node, currentState) : undefined; + var bodyFunction = shouldConvertBodyOfIterationStatement(node) ? createFunctionForBodyOfIterationStatement(node, currentState, outerConvertedLoopState) : undefined; + convertedLoopState = outerConvertedLoopState; + if (initializerFunction) + statements.push(initializerFunction.functionDeclaration); + if (bodyFunction) + statements.push(bodyFunction.functionDeclaration); + addExtraDeclarationsForConvertedLoop(statements, currentState, outerConvertedLoopState); + if (initializerFunction) { + statements.push(generateCallToConvertedLoopInitializer(initializerFunction.functionName, initializerFunction.containsYield)); + } + var loop; + if (bodyFunction) { + if (convert) { + loop = convert(node, outermostLabeledStatement, bodyFunction.part, ancestorFacts); + } + else { + var clone_4 = convertIterationStatementCore(node, initializerFunction, ts.createBlock(bodyFunction.part, /*multiLine*/ true)); + ts.aggregateTransformFlags(clone_4); + loop = ts.restoreEnclosingLabel(clone_4, outermostLabeledStatement, convertedLoopState && resetLabel); + } + } + else { + var clone_5 = convertIterationStatementCore(node, initializerFunction, ts.visitNode(node.statement, visitor, ts.isStatement, ts.liftToBlock)); + ts.aggregateTransformFlags(clone_5); + loop = ts.restoreEnclosingLabel(clone_5, outermostLabeledStatement, convertedLoopState && resetLabel); + } + statements.push(loop); + return statements; + } + function convertIterationStatementCore(node, initializerFunction, convertedLoopBody) { + switch (node.kind) { + case 230 /* ForStatement */: return convertForStatement(node, initializerFunction, convertedLoopBody); + case 231 /* ForInStatement */: return convertForInStatement(node, convertedLoopBody); + case 232 /* ForOfStatement */: return convertForOfStatement(node, convertedLoopBody); + case 228 /* DoStatement */: return convertDoStatement(node, convertedLoopBody); + case 229 /* WhileStatement */: return convertWhileStatement(node, convertedLoopBody); + default: return ts.Debug.failBadSyntaxKind(node, "IterationStatement expected"); + } + } + function convertForStatement(node, initializerFunction, convertedLoopBody) { + var shouldConvertCondition = node.condition && shouldConvertPartOfIterationStatement(node.condition); + var shouldConvertIncrementor = shouldConvertCondition || node.incrementor && shouldConvertPartOfIterationStatement(node.incrementor); + return ts.updateFor(node, ts.visitNode(initializerFunction ? initializerFunction.part : node.initializer, visitor, ts.isForInitializer), ts.visitNode(shouldConvertCondition ? undefined : node.condition, visitor, ts.isExpression), ts.visitNode(shouldConvertIncrementor ? undefined : node.incrementor, visitor, ts.isExpression), convertedLoopBody); + } + function convertForOfStatement(node, convertedLoopBody) { + return ts.updateForOf(node, + /*awaitModifier*/ undefined, ts.visitNode(node.initializer, visitor, ts.isForInitializer), ts.visitNode(node.expression, visitor, ts.isExpression), convertedLoopBody); + } + function convertForInStatement(node, convertedLoopBody) { + return ts.updateForIn(node, ts.visitNode(node.initializer, visitor, ts.isForInitializer), ts.visitNode(node.expression, visitor, ts.isExpression), convertedLoopBody); + } + function convertDoStatement(node, convertedLoopBody) { + return ts.updateDo(node, convertedLoopBody, ts.visitNode(node.expression, visitor, ts.isExpression)); + } + function convertWhileStatement(node, convertedLoopBody) { + return ts.updateWhile(node, ts.visitNode(node.expression, visitor, ts.isExpression), convertedLoopBody); + } + function createConvertedLoopState(node) { + var loopInitializer; + switch (node.kind) { + case 230 /* ForStatement */: + case 231 /* ForInStatement */: + case 232 /* ForOfStatement */: + var initializer = node.initializer; + if (initializer && initializer.kind === 243 /* VariableDeclarationList */) { + loopInitializer = initializer; + } + break; + } + // variables that will be passed to the loop as parameters + var loopParameters = []; + // variables declared in the loop initializer that will be changed inside the loop + var loopOutParameters = []; + if (loopInitializer && (ts.getCombinedNodeFlags(loopInitializer) & 3 /* BlockScoped */)) { + var hasCapturedBindingsInForInitializer = shouldConvertInitializerOfForStatement(node); + for (var _i = 0, _a = loopInitializer.declarations; _i < _a.length; _i++) { + var decl = _a[_i]; + processLoopVariableDeclaration(node, decl, loopParameters, loopOutParameters, hasCapturedBindingsInForInitializer); + } + } + var currentState = { loopParameters: loopParameters, loopOutParameters: loopOutParameters }; + if (convertedLoopState) { + // convertedOuterLoopState !== undefined means that this converted loop is nested in another converted loop. + // if outer converted loop has already accumulated some state - pass it through + if (convertedLoopState.argumentsName) { + // outer loop has already used 'arguments' so we've already have some name to alias it + // use the same name in all nested loops + currentState.argumentsName = convertedLoopState.argumentsName; + } + if (convertedLoopState.thisName) { + // outer loop has already used 'this' so we've already have some name to alias it + // use the same name in all nested loops + currentState.thisName = convertedLoopState.thisName; + } + if (convertedLoopState.hoistedLocalVariables) { + // we've already collected some non-block scoped variable declarations in enclosing loop + // use the same storage in nested loop + currentState.hoistedLocalVariables = convertedLoopState.hoistedLocalVariables; + } + } + return currentState; + } + function addExtraDeclarationsForConvertedLoop(statements, state, outerState) { + var extraVariableDeclarations; + // propagate state from the inner loop to the outer loop if necessary + if (state.argumentsName) { + // if alias for arguments is set + if (outerState) { + // pass it to outer converted loop + outerState.argumentsName = state.argumentsName; + } + else { + // this is top level converted loop and we need to create an alias for 'arguments' object + (extraVariableDeclarations || (extraVariableDeclarations = [])).push(ts.createVariableDeclaration(state.argumentsName, + /*type*/ undefined, ts.createIdentifier("arguments"))); + } + } + if (state.thisName) { + // if alias for this is set + if (outerState) { + // pass it to outer converted loop + outerState.thisName = state.thisName; + } + else { + // this is top level converted loop so we need to create an alias for 'this' here + // NOTE: + // if converted loops were all nested in arrow function then we'll always emit '_this' so convertedLoopState.thisName will not be set. + // If it is set this means that all nested loops are not nested in arrow function and it is safe to capture 'this'. + (extraVariableDeclarations || (extraVariableDeclarations = [])).push(ts.createVariableDeclaration(state.thisName, + /*type*/ undefined, ts.createIdentifier("this"))); + } + } + if (state.hoistedLocalVariables) { + // if hoistedLocalVariables !== undefined this means that we've possibly collected some variable declarations to be hoisted later + if (outerState) { + // pass them to outer converted loop + outerState.hoistedLocalVariables = state.hoistedLocalVariables; + } + else { + if (!extraVariableDeclarations) { + extraVariableDeclarations = []; + } + // hoist collected variable declarations + for (var _i = 0, _a = state.hoistedLocalVariables; _i < _a.length; _i++) { + var identifier = _a[_i]; + extraVariableDeclarations.push(ts.createVariableDeclaration(identifier)); + } + } + } + // add extra variables to hold out parameters if necessary + if (state.loopOutParameters.length) { + if (!extraVariableDeclarations) { + extraVariableDeclarations = []; + } + for (var _b = 0, _c = state.loopOutParameters; _b < _c.length; _b++) { + var outParam = _c[_b]; + extraVariableDeclarations.push(ts.createVariableDeclaration(outParam.outParamName)); + } + } + if (state.conditionVariable) { + if (!extraVariableDeclarations) { + extraVariableDeclarations = []; + } + extraVariableDeclarations.push(ts.createVariableDeclaration(state.conditionVariable, /*type*/ undefined, ts.createFalse())); + } + // create variable statement to hold all introduced variable declarations + if (extraVariableDeclarations) { + statements.push(ts.createVariableStatement( + /*modifiers*/ undefined, ts.createVariableDeclarationList(extraVariableDeclarations))); + } + } + function createOutVariable(p) { + return ts.createVariableDeclaration(p.originalName, /*type*/ undefined, p.outParamName); + } + /** + * Creates a `_loop_init` function for a `ForStatement` with a block-scoped initializer + * that is captured in a closure inside of the initializer. The `_loop_init` function is + * used to preserve the per-iteration environment semantics of + * [13.7.4.8 RS: ForBodyEvaluation](https://tc39.github.io/ecma262/#sec-forbodyevaluation). + */ + function createFunctionForInitializerOfForStatement(node, currentState) { + var functionName = ts.createUniqueName("_loop_init"); + var containsYield = (node.initializer.transformFlags & 262144 /* ContainsYield */) !== 0; + var emitFlags = 0 /* None */; + if (currentState.containsLexicalThis) + emitFlags |= 8 /* CapturesThis */; + if (containsYield && hierarchyFacts & 4 /* AsyncFunctionBody */) + emitFlags |= 262144 /* AsyncFunctionBody */; + var statements = []; + statements.push(ts.createVariableStatement(/*modifiers*/ undefined, node.initializer)); + copyOutParameters(currentState.loopOutParameters, 2 /* Initializer */, 1 /* ToOutParameter */, statements); + // This transforms the following ES2015 syntax: + // + // for (let i = (setImmediate(() => console.log(i)), 0); i < 2; i++) { + // // loop body + // } + // + // Into the following ES5 syntax: + // + // var _loop_init_1 = function () { + // var i = (setImmediate(() => console.log(i)), 0); + // out_i_1 = i; + // }; + // var out_i_1; + // _loop_init_1(); + // for (var i = out_i_1; i < 2; i++) { + // // loop body + // } + // + // Which prevents mutations to `i` in the per-iteration environment of the body + // from affecting the initial value for `i` outside of the per-iteration environment. + var functionDeclaration = ts.createVariableStatement( + /*modifiers*/ undefined, ts.setEmitFlags(ts.createVariableDeclarationList([ + ts.createVariableDeclaration(functionName, + /*type*/ undefined, ts.setEmitFlags(ts.createFunctionExpression( + /*modifiers*/ undefined, containsYield ? ts.createToken(41 /* AsteriskToken */) : undefined, + /*name*/ undefined, + /*typeParameters*/ undefined, + /*parameters*/ undefined, + /*type*/ undefined, ts.visitNode(ts.createBlock(statements, /*multiLine*/ true), visitor, ts.isBlock)), emitFlags)) + ]), 2097152 /* NoHoisting */)); + var part = ts.createVariableDeclarationList(ts.map(currentState.loopOutParameters, createOutVariable)); + return { functionName: functionName, containsYield: containsYield, functionDeclaration: functionDeclaration, part: part }; + } + /** + * Creates a `_loop` function for an `IterationStatement` with a block-scoped initializer + * that is captured in a closure inside of the loop body. The `_loop` function is used to + * preserve the per-iteration environment semantics of + * [13.7.4.8 RS: ForBodyEvaluation](https://tc39.github.io/ecma262/#sec-forbodyevaluation). + */ + function createFunctionForBodyOfIterationStatement(node, currentState, outerState) { + var functionName = ts.createUniqueName("_loop"); + startLexicalEnvironment(); + var statement = ts.visitNode(node.statement, visitor, ts.isStatement, ts.liftToBlock); + var lexicalEnvironment = endLexicalEnvironment(); + var statements = []; + if (shouldConvertConditionOfForStatement(node) || shouldConvertIncrementorOfForStatement(node)) { + // If a block-scoped variable declared in the initializer of `node` is captured in + // the condition or incrementor, we must move the condition and incrementor into + // the body of the for loop. + // + // This transforms the following ES2015 syntax: + // + // for (let i = 0; setImmediate(() => console.log(i)), i < 2; setImmediate(() => console.log(i)), i++) { + // // loop body + // } + // + // Into the following ES5 syntax: + // + // var _loop_1 = function (i) { + // if (inc_1) + // setImmediate(() => console.log(i)), i++; + // else + // inc_1 = true; + // if (!(setImmediate(() => console.log(i)), i < 2)) + // return out_i_1 = i, "break"; + // // loop body + // out_i_1 = i; + // } + // var out_i_1, inc_1 = false; + // for (var i = 0;;) { + // var state_1 = _loop_1(i); + // i = out_i_1; + // if (state_1 === "break") + // break; + // } + // + // Which prevents mutations to `i` in the per-iteration environment of the body + // from affecting the value of `i` in the previous per-iteration environment. + // + // Note that the incrementor of a `for` loop is evaluated in a *new* per-iteration + // environment that is carried over to the next iteration of the loop. As a result, + // we must indicate whether this is the first evaluation of the loop body so that + // we only evaluate the incrementor on subsequent evaluations. + currentState.conditionVariable = ts.createUniqueName("inc"); + statements.push(ts.createIf(currentState.conditionVariable, ts.createStatement(ts.visitNode(node.incrementor, visitor, ts.isExpression)), ts.createStatement(ts.createAssignment(currentState.conditionVariable, ts.createTrue())))); + if (shouldConvertConditionOfForStatement(node)) { + statements.push(ts.createIf(ts.createPrefix(53 /* ExclamationToken */, ts.visitNode(node.condition, visitor, ts.isExpression)), ts.visitNode(ts.createBreak(), visitor, ts.isStatement))); + } + } + if (ts.isBlock(statement)) { + ts.addRange(statements, statement.statements); + } + else { + statements.push(statement); + } + copyOutParameters(currentState.loopOutParameters, 1 /* Body */, 1 /* ToOutParameter */, statements); + ts.insertStatementsAfterStandardPrologue(statements, lexicalEnvironment); + var loopBody = ts.createBlock(statements, /*multiLine*/ true); + if (ts.isBlock(statement)) + ts.setOriginalNode(loopBody, statement); + var containsYield = (node.statement.transformFlags & 262144 /* ContainsYield */) !== 0; + var emitFlags = 0; + if (currentState.containsLexicalThis) + emitFlags |= 8 /* CapturesThis */; + if (containsYield && (hierarchyFacts & 4 /* AsyncFunctionBody */) !== 0) + emitFlags |= 262144 /* AsyncFunctionBody */; + // This transforms the following ES2015 syntax (in addition to other variations): + // + // for (let i = 0; i < 2; i++) { + // setImmediate(() => console.log(i)); + // } + // + // Into the following ES5 syntax: + // + // var _loop_1 = function (i) { + // setImmediate(() => console.log(i)); + // }; + // for (var i = 0; i < 2; i++) { + // _loop_1(i); + // } + var functionDeclaration = ts.createVariableStatement( + /*modifiers*/ undefined, ts.setEmitFlags(ts.createVariableDeclarationList([ + ts.createVariableDeclaration(functionName, + /*type*/ undefined, ts.setEmitFlags(ts.createFunctionExpression( + /*modifiers*/ undefined, containsYield ? ts.createToken(41 /* AsteriskToken */) : undefined, + /*name*/ undefined, + /*typeParameters*/ undefined, currentState.loopParameters, + /*type*/ undefined, loopBody), emitFlags)) + ]), 2097152 /* NoHoisting */)); + var part = generateCallToConvertedLoop(functionName, currentState, outerState, containsYield); + return { functionName: functionName, containsYield: containsYield, functionDeclaration: functionDeclaration, part: part }; + } + function copyOutParameter(outParam, copyDirection) { + var source = copyDirection === 0 /* ToOriginal */ ? outParam.outParamName : outParam.originalName; + var target = copyDirection === 0 /* ToOriginal */ ? outParam.originalName : outParam.outParamName; + return ts.createBinary(target, 62 /* EqualsToken */, source); + } + function copyOutParameters(outParams, partFlags, copyDirection, statements) { + for (var _i = 0, outParams_1 = outParams; _i < outParams_1.length; _i++) { + var outParam = outParams_1[_i]; + if (outParam.flags & partFlags) { + statements.push(ts.createExpressionStatement(copyOutParameter(outParam, copyDirection))); + } + } + } + function generateCallToConvertedLoopInitializer(initFunctionExpressionName, containsYield) { + var call = ts.createCall(initFunctionExpressionName, /*typeArguments*/ undefined, []); + var callResult = containsYield + ? ts.createYield(ts.createToken(41 /* AsteriskToken */), ts.setEmitFlags(call, 8388608 /* Iterator */)) + : call; + return ts.createStatement(callResult); + } + function generateCallToConvertedLoop(loopFunctionExpressionName, state, outerState, containsYield) { + var statements = []; + // loop is considered simple if it does not have any return statements or break\continue that transfer control outside of the loop + // simple loops are emitted as just 'loop()'; + // NOTE: if loop uses only 'continue' it still will be emitted as simple loop + var isSimpleLoop = !(state.nonLocalJumps & ~4 /* Continue */) && + !state.labeledNonLocalBreaks && + !state.labeledNonLocalContinues; + var call = ts.createCall(loopFunctionExpressionName, /*typeArguments*/ undefined, ts.map(state.loopParameters, function (p) { return p.name; })); + var callResult = containsYield + ? ts.createYield(ts.createToken(41 /* AsteriskToken */), ts.setEmitFlags(call, 8388608 /* Iterator */)) + : call; + if (isSimpleLoop) { + statements.push(ts.createExpressionStatement(callResult)); + copyOutParameters(state.loopOutParameters, 1 /* Body */, 0 /* ToOriginal */, statements); + } + else { + var loopResultName = ts.createUniqueName("state"); + var stateVariable = ts.createVariableStatement( + /*modifiers*/ undefined, ts.createVariableDeclarationList([ts.createVariableDeclaration(loopResultName, /*type*/ undefined, callResult)])); + statements.push(stateVariable); + copyOutParameters(state.loopOutParameters, 1 /* Body */, 0 /* ToOriginal */, statements); + if (state.nonLocalJumps & 8 /* Return */) { + var returnStatement = void 0; + if (outerState) { + outerState.nonLocalJumps |= 8 /* Return */; + returnStatement = ts.createReturn(loopResultName); + } + else { + returnStatement = ts.createReturn(ts.createPropertyAccess(loopResultName, "value")); + } + statements.push(ts.createIf(ts.createBinary(ts.createTypeOf(loopResultName), 36 /* EqualsEqualsEqualsToken */, ts.createLiteral("object")), returnStatement)); + } + if (state.nonLocalJumps & 2 /* Break */) { + statements.push(ts.createIf(ts.createBinary(loopResultName, 36 /* EqualsEqualsEqualsToken */, ts.createLiteral("break")), ts.createBreak())); + } + if (state.labeledNonLocalBreaks || state.labeledNonLocalContinues) { + var caseClauses = []; + processLabeledJumps(state.labeledNonLocalBreaks, /*isBreak*/ true, loopResultName, outerState, caseClauses); + processLabeledJumps(state.labeledNonLocalContinues, /*isBreak*/ false, loopResultName, outerState, caseClauses); + statements.push(ts.createSwitch(loopResultName, ts.createCaseBlock(caseClauses))); + } + } + return statements; + } + function setLabeledJump(state, isBreak, labelText, labelMarker) { + if (isBreak) { + if (!state.labeledNonLocalBreaks) { + state.labeledNonLocalBreaks = ts.createMap(); + } + state.labeledNonLocalBreaks.set(labelText, labelMarker); + } + else { + if (!state.labeledNonLocalContinues) { + state.labeledNonLocalContinues = ts.createMap(); + } + state.labeledNonLocalContinues.set(labelText, labelMarker); + } + } + function processLabeledJumps(table, isBreak, loopResultName, outerLoop, caseClauses) { + if (!table) { + return; + } + table.forEach(function (labelMarker, labelText) { + var statements = []; + // if there are no outer converted loop or outer label in question is located inside outer converted loop + // then emit labeled break\continue + // otherwise propagate pair 'label -> marker' to outer converted loop and emit 'return labelMarker' so outer loop can later decide what to do + if (!outerLoop || (outerLoop.labels && outerLoop.labels.get(labelText))) { + var label = ts.createIdentifier(labelText); + statements.push(isBreak ? ts.createBreak(label) : ts.createContinue(label)); + } + else { + setLabeledJump(outerLoop, isBreak, labelText, labelMarker); + statements.push(ts.createReturn(loopResultName)); + } + caseClauses.push(ts.createCaseClause(ts.createLiteral(labelMarker), statements)); + }); + } + function processLoopVariableDeclaration(container, decl, loopParameters, loopOutParameters, hasCapturedBindingsInForInitializer) { + var name = decl.name; + if (ts.isBindingPattern(name)) { + for (var _i = 0, _a = name.elements; _i < _a.length; _i++) { + var element = _a[_i]; + if (!ts.isOmittedExpression(element)) { + processLoopVariableDeclaration(container, element, loopParameters, loopOutParameters, hasCapturedBindingsInForInitializer); + } + } + } + else { + loopParameters.push(ts.createParameter(/*decorators*/ undefined, /*modifiers*/ undefined, /*dotDotDotToken*/ undefined, name)); + var checkFlags = resolver.getNodeCheckFlags(decl); + if (checkFlags & 4194304 /* NeedsLoopOutParameter */ || hasCapturedBindingsInForInitializer) { + var outParamName = ts.createUniqueName("out_" + ts.idText(name)); + var flags = 0; + if (checkFlags & 4194304 /* NeedsLoopOutParameter */) { + flags |= 1 /* Body */; + } + if (ts.isForStatement(container) && container.initializer && resolver.isBindingCapturedByNode(container.initializer, decl)) { + flags |= 2 /* Initializer */; + } + loopOutParameters.push({ flags: flags, originalName: name, outParamName: outParamName }); + } + } + } + /** + * Adds the members of an object literal to an array of expressions. + * + * @param expressions An array of expressions. + * @param node An ObjectLiteralExpression node. + * @param receiver The receiver for members of the ObjectLiteralExpression. + * @param numInitialNonComputedProperties The number of initial properties without + * computed property names. + */ + function addObjectLiteralMembers(expressions, node, receiver, start) { + var properties = node.properties; + var numProperties = properties.length; + for (var i = start; i < numProperties; i++) { + var property = properties[i]; + switch (property.kind) { + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + var accessors = ts.getAllAccessorDeclarations(node.properties, property); + if (property === accessors.firstAccessor) { + expressions.push(transformAccessorsToExpression(receiver, accessors, node, !!node.multiLine)); + } + break; + case 161 /* MethodDeclaration */: + expressions.push(transformObjectLiteralMethodDeclarationToExpression(property, receiver, node, node.multiLine)); + break; + case 281 /* PropertyAssignment */: + expressions.push(transformPropertyAssignmentToExpression(property, receiver, node.multiLine)); + break; + case 282 /* ShorthandPropertyAssignment */: + expressions.push(transformShorthandPropertyAssignmentToExpression(property, receiver, node.multiLine)); + break; + default: + ts.Debug.failBadSyntaxKind(node); + break; + } + } + } + /** + * Transforms a PropertyAssignment node into an expression. + * + * @param node The ObjectLiteralExpression that contains the PropertyAssignment. + * @param property The PropertyAssignment node. + * @param receiver The receiver for the assignment. + */ + function transformPropertyAssignmentToExpression(property, receiver, startsOnNewLine) { + var expression = ts.createAssignment(ts.createMemberAccessForPropertyName(receiver, ts.visitNode(property.name, visitor, ts.isPropertyName)), ts.visitNode(property.initializer, visitor, ts.isExpression)); + ts.setTextRange(expression, property); + if (startsOnNewLine) { + ts.startOnNewLine(expression); + } + return expression; + } + /** + * Transforms a ShorthandPropertyAssignment node into an expression. + * + * @param node The ObjectLiteralExpression that contains the ShorthandPropertyAssignment. + * @param property The ShorthandPropertyAssignment node. + * @param receiver The receiver for the assignment. + */ + function transformShorthandPropertyAssignmentToExpression(property, receiver, startsOnNewLine) { + var expression = ts.createAssignment(ts.createMemberAccessForPropertyName(receiver, ts.visitNode(property.name, visitor, ts.isPropertyName)), ts.getSynthesizedClone(property.name)); + ts.setTextRange(expression, property); + if (startsOnNewLine) { + ts.startOnNewLine(expression); + } + return expression; + } + /** + * Transforms a MethodDeclaration of an ObjectLiteralExpression into an expression. + * + * @param node The ObjectLiteralExpression that contains the MethodDeclaration. + * @param method The MethodDeclaration node. + * @param receiver The receiver for the assignment. + */ + function transformObjectLiteralMethodDeclarationToExpression(method, receiver, container, startsOnNewLine) { + var expression = ts.createAssignment(ts.createMemberAccessForPropertyName(receiver, ts.visitNode(method.name, visitor, ts.isPropertyName)), transformFunctionLikeToExpression(method, /*location*/ method, /*name*/ undefined, container)); + ts.setTextRange(expression, method); + if (startsOnNewLine) { + ts.startOnNewLine(expression); + } + return expression; + } + function visitCatchClause(node) { + var ancestorFacts = enterSubtree(7104 /* BlockScopeExcludes */, 0 /* BlockScopeIncludes */); + var updated; + ts.Debug.assert(!!node.variableDeclaration, "Catch clause variable should always be present when downleveling ES2015."); + if (ts.isBindingPattern(node.variableDeclaration.name)) { + var temp = ts.createTempVariable(/*recordTempVariable*/ undefined); + var newVariableDeclaration = ts.createVariableDeclaration(temp); + ts.setTextRange(newVariableDeclaration, node.variableDeclaration); + var vars = ts.flattenDestructuringBinding(node.variableDeclaration, visitor, context, 0 /* All */, temp); + var list = ts.createVariableDeclarationList(vars); + ts.setTextRange(list, node.variableDeclaration); + var destructure = ts.createVariableStatement(/*modifiers*/ undefined, list); + updated = ts.updateCatchClause(node, newVariableDeclaration, addStatementToStartOfBlock(node.block, destructure)); + } + else { + updated = ts.visitEachChild(node, visitor, context); + } + exitSubtree(ancestorFacts, 0 /* None */, 0 /* None */); + return updated; + } + function addStatementToStartOfBlock(block, statement) { + var transformedStatements = ts.visitNodes(block.statements, visitor, ts.isStatement); + return ts.updateBlock(block, __spreadArrays([statement], transformedStatements)); + } + /** + * Visits a MethodDeclaration of an ObjectLiteralExpression and transforms it into a + * PropertyAssignment. + * + * @param node A MethodDeclaration node. + */ + function visitMethodDeclaration(node) { + // We should only get here for methods on an object literal with regular identifier names. + // Methods on classes are handled in visitClassDeclaration/visitClassExpression. + // Methods with computed property names are handled in visitObjectLiteralExpression. + ts.Debug.assert(!ts.isComputedPropertyName(node.name)); + var functionExpression = transformFunctionLikeToExpression(node, /*location*/ ts.moveRangePos(node, -1), /*name*/ undefined, /*container*/ undefined); + ts.setEmitFlags(functionExpression, 512 /* NoLeadingComments */ | ts.getEmitFlags(functionExpression)); + return ts.setTextRange(ts.createPropertyAssignment(node.name, functionExpression), + /*location*/ node); + } + /** + * Visits an AccessorDeclaration of an ObjectLiteralExpression. + * + * @param node An AccessorDeclaration node. + */ + function visitAccessorDeclaration(node) { + ts.Debug.assert(!ts.isComputedPropertyName(node.name)); + var savedConvertedLoopState = convertedLoopState; + convertedLoopState = undefined; + var ancestorFacts = enterSubtree(16286 /* FunctionExcludes */, 65 /* FunctionIncludes */); + var updated; + var parameters = ts.visitParameterList(node.parameters, visitor, context); + var body = transformFunctionBody(node); + if (node.kind === 163 /* GetAccessor */) { + updated = ts.updateGetAccessor(node, node.decorators, node.modifiers, node.name, parameters, node.type, body); + } + else { + updated = ts.updateSetAccessor(node, node.decorators, node.modifiers, node.name, parameters, body); + } + exitSubtree(ancestorFacts, 49152 /* FunctionSubtreeExcludes */, 0 /* None */); + convertedLoopState = savedConvertedLoopState; + return updated; + } + /** + * Visits a ShorthandPropertyAssignment and transforms it into a PropertyAssignment. + * + * @param node A ShorthandPropertyAssignment node. + */ + function visitShorthandPropertyAssignment(node) { + return ts.setTextRange(ts.createPropertyAssignment(node.name, ts.getSynthesizedClone(node.name)), + /*location*/ node); + } + function visitComputedPropertyName(node) { + return ts.visitEachChild(node, visitor, context); + } + /** + * Visits a YieldExpression node. + * + * @param node A YieldExpression node. + */ + function visitYieldExpression(node) { + // `yield` expressions are transformed using the generators transformer. + return ts.visitEachChild(node, visitor, context); + } + /** + * Visits an ArrayLiteralExpression that contains a spread element. + * + * @param node An ArrayLiteralExpression node. + */ + function visitArrayLiteralExpression(node) { + if (ts.some(node.elements, ts.isSpreadElement)) { + // We are here because we contain a SpreadElementExpression. + return transformAndSpreadElements(node.elements, /*needsUniqueCopy*/ true, !!node.multiLine, /*hasTrailingComma*/ !!node.elements.hasTrailingComma); + } + return ts.visitEachChild(node, visitor, context); + } + /** + * Visits a CallExpression that contains either a spread element or `super`. + * + * @param node a CallExpression. + */ + function visitCallExpression(node) { + if (ts.getEmitFlags(node) & 33554432 /* TypeScriptClassWrapper */) { + return visitTypeScriptClassWrapper(node); + } + var expression = ts.skipOuterExpressions(node.expression); + if (expression.kind === 102 /* SuperKeyword */ || + ts.isSuperProperty(expression) || + ts.some(node.arguments, ts.isSpreadElement)) { + return visitCallExpressionWithPotentialCapturedThisAssignment(node, /*assignToCapturedThis*/ true); + } + return ts.updateCall(node, ts.visitNode(node.expression, callExpressionVisitor, ts.isExpression), + /*typeArguments*/ undefined, ts.visitNodes(node.arguments, visitor, ts.isExpression)); + } + function visitTypeScriptClassWrapper(node) { + // This is a call to a class wrapper function (an IIFE) created by the 'ts' transformer. + // The wrapper has a form similar to: + // + // (function() { + // class C { // 1 + // } + // C.x = 1; // 2 + // return C; + // }()) + // + // When we transform the class, we end up with something like this: + // + // (function () { + // var C = (function () { // 3 + // function C() { + // } + // return C; // 4 + // }()); + // C.x = 1; + // return C; + // }()) + // + // We want to simplify the two nested IIFEs to end up with something like this: + // + // (function () { + // function C() { + // } + // C.x = 1; + // return C; + // }()) + // We skip any outer expressions in a number of places to get to the innermost + // expression, but we will restore them later to preserve comments and source maps. + var body = ts.cast(ts.cast(ts.skipOuterExpressions(node.expression), ts.isArrowFunction).body, ts.isBlock); + // The class statements are the statements generated by visiting the first statement with initializer of the + // body (1), while all other statements are added to remainingStatements (2) + var isVariableStatementWithInitializer = function (stmt) { return ts.isVariableStatement(stmt) && !!ts.first(stmt.declarationList.declarations).initializer; }; + // visit the class body statements outside of any converted loop body. + var savedConvertedLoopState = convertedLoopState; + convertedLoopState = undefined; + var bodyStatements = ts.visitNodes(body.statements, visitor, ts.isStatement); + convertedLoopState = savedConvertedLoopState; + var classStatements = ts.filter(bodyStatements, isVariableStatementWithInitializer); + var remainingStatements = ts.filter(bodyStatements, function (stmt) { return !isVariableStatementWithInitializer(stmt); }); + var varStatement = ts.cast(ts.first(classStatements), ts.isVariableStatement); + // We know there is only one variable declaration here as we verified this in an + // earlier call to isTypeScriptClassWrapper + var variable = varStatement.declarationList.declarations[0]; + var initializer = ts.skipOuterExpressions(variable.initializer); + // Under certain conditions, the 'ts' transformer may introduce a class alias, which + // we see as an assignment, for example: + // + // (function () { + // var C_1; + // var C = C_1 = (function () { + // function C() { + // } + // C.x = function () { return C_1; } + // return C; + // }()); + // C = C_1 = __decorate([dec], C); + // return C; + // }()) + // + var aliasAssignment = ts.tryCast(initializer, ts.isAssignmentExpression); + // The underlying call (3) is another IIFE that may contain a '_super' argument. + var call = ts.cast(aliasAssignment ? ts.skipOuterExpressions(aliasAssignment.right) : initializer, ts.isCallExpression); + var func = ts.cast(ts.skipOuterExpressions(call.expression), ts.isFunctionExpression); + var funcStatements = func.body.statements; + var classBodyStart = 0; + var classBodyEnd = -1; + var statements = []; + if (aliasAssignment) { + // If we have a class alias assignment, we need to move it to the down-level constructor + // function we generated for the class. + var extendsCall = ts.tryCast(funcStatements[classBodyStart], ts.isExpressionStatement); + if (extendsCall) { + statements.push(extendsCall); + classBodyStart++; + } + // The next statement is the function declaration. + statements.push(funcStatements[classBodyStart]); + classBodyStart++; + // Add the class alias following the declaration. + statements.push(ts.createExpressionStatement(ts.createAssignment(aliasAssignment.left, ts.cast(variable.name, ts.isIdentifier)))); + } + // Find the trailing 'return' statement (4) + while (!ts.isReturnStatement(ts.elementAt(funcStatements, classBodyEnd))) { + classBodyEnd--; + } + // When we extract the statements of the inner IIFE, we exclude the 'return' statement (4) + // as we already have one that has been introduced by the 'ts' transformer. + ts.addRange(statements, funcStatements, classBodyStart, classBodyEnd); + if (classBodyEnd < -1) { + // If there were any hoisted declarations following the return statement, we should + // append them. + ts.addRange(statements, funcStatements, classBodyEnd + 1); + } + // Add the remaining statements of the outer wrapper. + ts.addRange(statements, remainingStatements); + // The 'es2015' class transform may add an end-of-declaration marker. If so we will add it + // after the remaining statements from the 'ts' transformer. + ts.addRange(statements, classStatements, /*start*/ 1); + // Recreate any outer parentheses or partially-emitted expressions to preserve source map + // and comment locations. + return ts.recreateOuterExpressions(node.expression, ts.recreateOuterExpressions(variable.initializer, ts.recreateOuterExpressions(aliasAssignment && aliasAssignment.right, ts.updateCall(call, ts.recreateOuterExpressions(call.expression, ts.updateFunctionExpression(func, + /*modifiers*/ undefined, + /*asteriskToken*/ undefined, + /*name*/ undefined, + /*typeParameters*/ undefined, func.parameters, + /*type*/ undefined, ts.updateBlock(func.body, statements))), + /*typeArguments*/ undefined, call.arguments)))); + } + function visitImmediateSuperCallInBody(node) { + return visitCallExpressionWithPotentialCapturedThisAssignment(node, /*assignToCapturedThis*/ false); + } + function visitCallExpressionWithPotentialCapturedThisAssignment(node, assignToCapturedThis) { + // We are here either because SuperKeyword was used somewhere in the expression, or + // because we contain a SpreadElementExpression. + if (node.transformFlags & 8192 /* ContainsRestOrSpread */ || + node.expression.kind === 102 /* SuperKeyword */ || + ts.isSuperProperty(ts.skipOuterExpressions(node.expression))) { + var _a = ts.createCallBinding(node.expression, hoistVariableDeclaration), target = _a.target, thisArg = _a.thisArg; + if (node.expression.kind === 102 /* SuperKeyword */) { + ts.setEmitFlags(thisArg, 4 /* NoSubstitution */); + } + var resultingCall = void 0; + if (node.transformFlags & 8192 /* ContainsRestOrSpread */) { + // [source] + // f(...a, b) + // x.m(...a, b) + // super(...a, b) + // super.m(...a, b) // in static + // super.m(...a, b) // in instance + // + // [output] + // f.apply(void 0, a.concat([b])) + // (_a = x).m.apply(_a, a.concat([b])) + // _super.apply(this, a.concat([b])) + // _super.m.apply(this, a.concat([b])) + // _super.prototype.m.apply(this, a.concat([b])) + resultingCall = ts.createFunctionApply(ts.visitNode(target, callExpressionVisitor, ts.isExpression), node.expression.kind === 102 /* SuperKeyword */ ? thisArg : ts.visitNode(thisArg, visitor, ts.isExpression), transformAndSpreadElements(node.arguments, /*needsUniqueCopy*/ false, /*multiLine*/ false, /*hasTrailingComma*/ false)); + } + else { + // [source] + // super(a) + // super.m(a) // in static + // super.m(a) // in instance + // + // [output] + // _super.call(this, a) + // _super.m.call(this, a) + // _super.prototype.m.call(this, a) + resultingCall = ts.createFunctionCall(ts.visitNode(target, callExpressionVisitor, ts.isExpression), node.expression.kind === 102 /* SuperKeyword */ ? thisArg : ts.visitNode(thisArg, visitor, ts.isExpression), ts.visitNodes(node.arguments, visitor, ts.isExpression), + /*location*/ node); + } + if (node.expression.kind === 102 /* SuperKeyword */) { + var initializer = ts.createLogicalOr(resultingCall, createActualThis()); + resultingCall = assignToCapturedThis + ? ts.createAssignment(ts.createFileLevelUniqueName("_this"), initializer) + : initializer; + } + return ts.setOriginalNode(resultingCall, node); + } + return ts.visitEachChild(node, visitor, context); + } + /** + * Visits a NewExpression that contains a spread element. + * + * @param node A NewExpression node. + */ + function visitNewExpression(node) { + if (ts.some(node.arguments, ts.isSpreadElement)) { + // We are here because we contain a SpreadElementExpression. + // [source] + // new C(...a) + // + // [output] + // new ((_a = C).bind.apply(_a, [void 0].concat(a)))() + var _a = ts.createCallBinding(ts.createPropertyAccess(node.expression, "bind"), hoistVariableDeclaration), target = _a.target, thisArg = _a.thisArg; + return ts.createNew(ts.createFunctionApply(ts.visitNode(target, visitor, ts.isExpression), thisArg, transformAndSpreadElements(ts.createNodeArray(__spreadArrays([ts.createVoidZero()], node.arguments)), /*needsUniqueCopy*/ false, /*multiLine*/ false, /*hasTrailingComma*/ false)), + /*typeArguments*/ undefined, []); + } + return ts.visitEachChild(node, visitor, context); + } + /** + * Transforms an array of Expression nodes that contains a SpreadExpression. + * + * @param elements The array of Expression nodes. + * @param needsUniqueCopy A value indicating whether to ensure that the result is a fresh array. + * @param multiLine A value indicating whether the result should be emitted on multiple lines. + */ + function transformAndSpreadElements(elements, needsUniqueCopy, multiLine, hasTrailingComma) { + // [source] + // [a, ...b, c] + // + // [output (downlevelIteration)] + // __spread([a], b, [c]) + // + // [output] + // __spreadArrays([a], b, [c]) + // Map spans of spread expressions into their expressions and spans of other + // expressions into an array literal. + var numElements = elements.length; + var segments = ts.flatten(ts.spanMap(elements, partitionSpread, function (partition, visitPartition, _start, end) { + return visitPartition(partition, multiLine, hasTrailingComma && end === numElements); + })); + if (compilerOptions.downlevelIteration) { + if (segments.length === 1) { + var firstSegment = segments[0]; + if (isCallToHelper(firstSegment, "___spread")) { + return segments[0]; + } + } + return ts.createSpreadHelper(context, segments); + } + else { + if (segments.length === 1) { + var firstSegment = segments[0]; + if (!needsUniqueCopy + || isPackedArrayLiteral(firstSegment) + || isCallToHelper(firstSegment, "___spreadArrays")) { + return segments[0]; + } + } + return ts.createSpreadArraysHelper(context, segments); + } + } + function isPackedElement(node) { + return !ts.isOmittedExpression(node); + } + function isPackedArrayLiteral(node) { + return ts.isArrayLiteralExpression(node) && ts.every(node.elements, isPackedElement); + } + function isCallToHelper(firstSegment, helperName) { + return ts.isCallExpression(firstSegment) + && ts.isIdentifier(firstSegment.expression) + && (ts.getEmitFlags(firstSegment.expression) & 4096 /* HelperName */) + && firstSegment.expression.escapedText === helperName; + } + function partitionSpread(node) { + return ts.isSpreadElement(node) + ? visitSpanOfSpreads + : visitSpanOfNonSpreads; + } + function visitSpanOfSpreads(chunk) { + return ts.map(chunk, visitExpressionOfSpread); + } + function visitSpanOfNonSpreads(chunk, multiLine, hasTrailingComma) { + return ts.createArrayLiteral(ts.visitNodes(ts.createNodeArray(chunk, hasTrailingComma), visitor, ts.isExpression), multiLine); + } + function visitSpreadElement(node) { + return ts.visitNode(node.expression, visitor, ts.isExpression); + } + /** + * Transforms the expression of a SpreadExpression node. + * + * @param node A SpreadExpression node. + */ + function visitExpressionOfSpread(node) { + return ts.visitNode(node.expression, visitor, ts.isExpression); + } + /** + * Visits a template literal. + * + * @param node A template literal. + */ + function visitTemplateLiteral(node) { + return ts.setTextRange(ts.createLiteral(node.text), node); + } + /** + * Visits a string literal with an extended unicode escape. + * + * @param node A string literal. + */ + function visitStringLiteral(node) { + if (node.hasExtendedUnicodeEscape) { + return ts.setTextRange(ts.createLiteral(node.text), node); + } + return node; + } + /** + * Visits a binary or octal (ES6) numeric literal. + * + * @param node A string literal. + */ + function visitNumericLiteral(node) { + if (node.numericLiteralFlags & 384 /* BinaryOrOctalSpecifier */) { + return ts.setTextRange(ts.createNumericLiteral(node.text), node); + } + return node; + } + /** + * Visits a TaggedTemplateExpression node. + * + * @param node A TaggedTemplateExpression node. + */ + function visitTaggedTemplateExpression(node) { + return ts.processTaggedTemplateExpression(context, node, visitor, currentSourceFile, recordTaggedTemplateString, ts.ProcessLevel.All); + } + /** + * Visits a TemplateExpression node. + * + * @param node A TemplateExpression node. + */ + function visitTemplateExpression(node) { + var expressions = []; + addTemplateHead(expressions, node); + addTemplateSpans(expressions, node); + // createAdd will check if each expression binds less closely than binary '+'. + // If it does, it wraps the expression in parentheses. Otherwise, something like + // `abc${ 1 << 2 }` + // becomes + // "abc" + 1 << 2 + "" + // which is really + // ("abc" + 1) << (2 + "") + // rather than + // "abc" + (1 << 2) + "" + var expression = ts.reduceLeft(expressions, ts.createAdd); + if (ts.nodeIsSynthesized(expression)) { + expression.pos = node.pos; + expression.end = node.end; + } + return expression; + } + /** + * Gets a value indicating whether we need to include the head of a TemplateExpression. + * + * @param node A TemplateExpression node. + */ + function shouldAddTemplateHead(node) { + // If this expression has an empty head literal and the first template span has a non-empty + // literal, then emitting the empty head literal is not necessary. + // `${ foo } and ${ bar }` + // can be emitted as + // foo + " and " + bar + // This is because it is only required that one of the first two operands in the emit + // output must be a string literal, so that the other operand and all following operands + // are forced into strings. + // + // If the first template span has an empty literal, then the head must still be emitted. + // `${ foo }${ bar }` + // must still be emitted as + // "" + foo + bar + // There is always atleast one templateSpan in this code path, since + // NoSubstitutionTemplateLiterals are directly emitted via emitLiteral() + ts.Debug.assert(node.templateSpans.length !== 0); + return node.head.text.length !== 0 || node.templateSpans[0].literal.text.length === 0; + } + /** + * Adds the head of a TemplateExpression to an array of expressions. + * + * @param expressions An array of expressions. + * @param node A TemplateExpression node. + */ + function addTemplateHead(expressions, node) { + if (!shouldAddTemplateHead(node)) { + return; + } + expressions.push(ts.createLiteral(node.head.text)); + } + /** + * Visits and adds the template spans of a TemplateExpression to an array of expressions. + * + * @param expressions An array of expressions. + * @param node A TemplateExpression node. + */ + function addTemplateSpans(expressions, node) { + for (var _i = 0, _a = node.templateSpans; _i < _a.length; _i++) { + var span = _a[_i]; + expressions.push(ts.visitNode(span.expression, visitor, ts.isExpression)); + // Only emit if the literal is non-empty. + // The binary '+' operator is left-associative, so the first string concatenation + // with the head will force the result up to this point to be a string. + // Emitting a '+ ""' has no semantic effect for middles and tails. + if (span.literal.text.length !== 0) { + expressions.push(ts.createLiteral(span.literal.text)); + } + } + } + /** + * Visits the `super` keyword + */ + function visitSuperKeyword(isExpressionOfCall) { + return hierarchyFacts & 8 /* NonStaticClassElement */ && !isExpressionOfCall ? ts.createPropertyAccess(ts.createFileLevelUniqueName("_super"), "prototype") : + ts.createFileLevelUniqueName("_super"); + } + function visitMetaProperty(node) { + if (node.keywordToken === 99 /* NewKeyword */ && node.name.escapedText === "target") { + hierarchyFacts |= 16384 /* NewTarget */; + return ts.createFileLevelUniqueName("_newTarget"); + } + return node; + } + /** + * Called by the printer just before a node is printed. + * + * @param hint A hint as to the intended usage of the node. + * @param node The node to be printed. + * @param emitCallback The callback used to emit the node. + */ + function onEmitNode(hint, node, emitCallback) { + if (enabledSubstitutions & 1 /* CapturedThis */ && ts.isFunctionLike(node)) { + // If we are tracking a captured `this`, keep track of the enclosing function. + var ancestorFacts = enterSubtree(16286 /* FunctionExcludes */, ts.getEmitFlags(node) & 8 /* CapturesThis */ + ? 65 /* FunctionIncludes */ | 16 /* CapturesThis */ + : 65 /* FunctionIncludes */); + previousOnEmitNode(hint, node, emitCallback); + exitSubtree(ancestorFacts, 0 /* None */, 0 /* None */); + return; + } + previousOnEmitNode(hint, node, emitCallback); + } + /** + * Enables a more costly code path for substitutions when we determine a source file + * contains block-scoped bindings (e.g. `let` or `const`). + */ + function enableSubstitutionsForBlockScopedBindings() { + if ((enabledSubstitutions & 2 /* BlockScopedBindings */) === 0) { + enabledSubstitutions |= 2 /* BlockScopedBindings */; + context.enableSubstitution(75 /* Identifier */); + } + } + /** + * Enables a more costly code path for substitutions when we determine a source file + * contains a captured `this`. + */ + function enableSubstitutionsForCapturedThis() { + if ((enabledSubstitutions & 1 /* CapturedThis */) === 0) { + enabledSubstitutions |= 1 /* CapturedThis */; + context.enableSubstitution(104 /* ThisKeyword */); + context.enableEmitNotification(162 /* Constructor */); + context.enableEmitNotification(161 /* MethodDeclaration */); + context.enableEmitNotification(163 /* GetAccessor */); + context.enableEmitNotification(164 /* SetAccessor */); + context.enableEmitNotification(202 /* ArrowFunction */); + context.enableEmitNotification(201 /* FunctionExpression */); + context.enableEmitNotification(244 /* FunctionDeclaration */); + } + } + /** + * Hooks node substitutions. + * + * @param hint The context for the emitter. + * @param node The node to substitute. + */ + function onSubstituteNode(hint, node) { + node = previousOnSubstituteNode(hint, node); + if (hint === 1 /* Expression */) { + return substituteExpression(node); + } + if (ts.isIdentifier(node)) { + return substituteIdentifier(node); + } + return node; + } + /** + * Hooks substitutions for non-expression identifiers. + */ + function substituteIdentifier(node) { + // Only substitute the identifier if we have enabled substitutions for block-scoped + // bindings. + if (enabledSubstitutions & 2 /* BlockScopedBindings */ && !ts.isInternalName(node)) { + var original = ts.getParseTreeNode(node, ts.isIdentifier); + if (original && isNameOfDeclarationWithCollidingName(original)) { + return ts.setTextRange(ts.getGeneratedNameForNode(original), node); + } + } + return node; + } + /** + * Determines whether a name is the name of a declaration with a colliding name. + * NOTE: This function expects to be called with an original source tree node. + * + * @param node An original source tree node. + */ + function isNameOfDeclarationWithCollidingName(node) { + switch (node.parent.kind) { + case 191 /* BindingElement */: + case 245 /* ClassDeclaration */: + case 248 /* EnumDeclaration */: + case 242 /* VariableDeclaration */: + return node.parent.name === node + && resolver.isDeclarationWithCollidingName(node.parent); + } + return false; + } + /** + * Substitutes an expression. + * + * @param node An Expression node. + */ + function substituteExpression(node) { + switch (node.kind) { + case 75 /* Identifier */: + return substituteExpressionIdentifier(node); + case 104 /* ThisKeyword */: + return substituteThisKeyword(node); + } + return node; + } + /** + * Substitutes an expression identifier. + * + * @param node An Identifier node. + */ + function substituteExpressionIdentifier(node) { + if (enabledSubstitutions & 2 /* BlockScopedBindings */ && !ts.isInternalName(node)) { + var declaration = resolver.getReferencedDeclarationWithCollidingName(node); + if (declaration && !(ts.isClassLike(declaration) && isPartOfClassBody(declaration, node))) { + return ts.setTextRange(ts.getGeneratedNameForNode(ts.getNameOfDeclaration(declaration)), node); + } + } + return node; + } + function isPartOfClassBody(declaration, node) { + var currentNode = ts.getParseTreeNode(node); + if (!currentNode || currentNode === declaration || currentNode.end <= declaration.pos || currentNode.pos >= declaration.end) { + // if the node has no correlation to a parse tree node, its definitely not + // part of the body. + // if the node is outside of the document range of the declaration, its + // definitely not part of the body. + return false; + } + var blockScope = ts.getEnclosingBlockScopeContainer(declaration); + while (currentNode) { + if (currentNode === blockScope || currentNode === declaration) { + // if we are in the enclosing block scope of the declaration, we are definitely + // not inside the class body. + return false; + } + if (ts.isClassElement(currentNode) && currentNode.parent === declaration) { + return true; + } + currentNode = currentNode.parent; + } + return false; + } + /** + * Substitutes `this` when contained within an arrow function. + * + * @param node The ThisKeyword node. + */ + function substituteThisKeyword(node) { + if (enabledSubstitutions & 1 /* CapturedThis */ + && hierarchyFacts & 16 /* CapturesThis */) { + return ts.setTextRange(ts.createFileLevelUniqueName("_this"), node); + } + return node; + } + function getClassMemberPrefix(node, member) { + return ts.hasModifier(member, 32 /* Static */) + ? ts.getInternalName(node) + : ts.createPropertyAccess(ts.getInternalName(node), "prototype"); + } + function hasSynthesizedDefaultSuperCall(constructor, hasExtendsClause) { + if (!constructor || !hasExtendsClause) { + return false; + } + if (ts.some(constructor.parameters)) { + return false; + } + var statement = ts.firstOrUndefined(constructor.body.statements); + if (!statement || !ts.nodeIsSynthesized(statement) || statement.kind !== 226 /* ExpressionStatement */) { + return false; + } + var statementExpression = statement.expression; + if (!ts.nodeIsSynthesized(statementExpression) || statementExpression.kind !== 196 /* CallExpression */) { + return false; + } + var callTarget = statementExpression.expression; + if (!ts.nodeIsSynthesized(callTarget) || callTarget.kind !== 102 /* SuperKeyword */) { + return false; + } + var callArgument = ts.singleOrUndefined(statementExpression.arguments); + if (!callArgument || !ts.nodeIsSynthesized(callArgument) || callArgument.kind !== 213 /* SpreadElement */) { + return false; + } + var expression = callArgument.expression; + return ts.isIdentifier(expression) && expression.escapedText === "arguments"; + } + } + ts.transformES2015 = transformES2015; + function createExtendsHelper(context, name) { + context.requestEmitHelper(ts.extendsHelper); + return ts.createCall(ts.getUnscopedHelperName("__extends"), + /*typeArguments*/ undefined, [ + name, + ts.createFileLevelUniqueName("_super") + ]); + } + ts.extendsHelper = { + name: "typescript:extends", + importName: "__extends", + scoped: false, + priority: 0, + text: "\n var __extends = (this && this.__extends) || (function () {\n var extendStatics = function (d, b) {\n extendStatics = Object.setPrototypeOf ||\n ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\n return extendStatics(d, b);\n };\n\n return function (d, b) {\n extendStatics(d, b);\n function __() { this.constructor = d; }\n d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n };\n })();" + }; +})(ts || (ts = {})); +/*@internal*/ +var ts; +(function (ts) { + /** + * Transforms ES5 syntax into ES3 syntax. + * + * @param context Context and state information for the transformation. + */ + function transformES5(context) { + var compilerOptions = context.getCompilerOptions(); + // enable emit notification only if using --jsx preserve or react-native + var previousOnEmitNode; + var noSubstitution; + if (compilerOptions.jsx === 1 /* Preserve */ || compilerOptions.jsx === 3 /* ReactNative */) { + previousOnEmitNode = context.onEmitNode; + context.onEmitNode = onEmitNode; + context.enableEmitNotification(268 /* JsxOpeningElement */); + context.enableEmitNotification(269 /* JsxClosingElement */); + context.enableEmitNotification(267 /* JsxSelfClosingElement */); + noSubstitution = []; + } + var previousOnSubstituteNode = context.onSubstituteNode; + context.onSubstituteNode = onSubstituteNode; + context.enableSubstitution(194 /* PropertyAccessExpression */); + context.enableSubstitution(281 /* PropertyAssignment */); + return ts.chainBundle(transformSourceFile); + /** + * Transforms an ES5 source file to ES3. + * + * @param node A SourceFile + */ + function transformSourceFile(node) { + return node; + } + /** + * Called by the printer just before a node is printed. + * + * @param hint A hint as to the intended usage of the node. + * @param node The node to emit. + * @param emitCallback A callback used to emit the node. + */ + function onEmitNode(hint, node, emitCallback) { + switch (node.kind) { + case 268 /* JsxOpeningElement */: + case 269 /* JsxClosingElement */: + case 267 /* JsxSelfClosingElement */: + var tagName = node.tagName; + noSubstitution[ts.getOriginalNodeId(tagName)] = true; + break; + } + previousOnEmitNode(hint, node, emitCallback); + } + /** + * Hooks node substitutions. + * + * @param hint A hint as to the intended usage of the node. + * @param node The node to substitute. + */ + function onSubstituteNode(hint, node) { + if (node.id && noSubstitution && noSubstitution[node.id]) { + return previousOnSubstituteNode(hint, node); + } + node = previousOnSubstituteNode(hint, node); + if (ts.isPropertyAccessExpression(node)) { + return substitutePropertyAccessExpression(node); + } + else if (ts.isPropertyAssignment(node)) { + return substitutePropertyAssignment(node); + } + return node; + } + /** + * Substitutes a PropertyAccessExpression whose name is a reserved word. + * + * @param node A PropertyAccessExpression + */ + function substitutePropertyAccessExpression(node) { + if (ts.isPrivateIdentifier(node.name)) { + return node; + } + var literalName = trySubstituteReservedName(node.name); + if (literalName) { + return ts.setTextRange(ts.createElementAccess(node.expression, literalName), node); + } + return node; + } + /** + * Substitutes a PropertyAssignment whose name is a reserved word. + * + * @param node A PropertyAssignment + */ + function substitutePropertyAssignment(node) { + var literalName = ts.isIdentifier(node.name) && trySubstituteReservedName(node.name); + if (literalName) { + return ts.updatePropertyAssignment(node, literalName, node.initializer); + } + return node; + } + /** + * If an identifier name is a reserved word, returns a string literal for the name. + * + * @param name An Identifier + */ + function trySubstituteReservedName(name) { + var token = name.originalKeywordKind || (ts.nodeIsSynthesized(name) ? ts.stringToToken(ts.idText(name)) : undefined); + if (token !== undefined && token >= 77 /* FirstReservedWord */ && token <= 112 /* LastReservedWord */) { + return ts.setTextRange(ts.createLiteral(name), name); + } + return undefined; + } + } + ts.transformES5 = transformES5; +})(ts || (ts = {})); +// Transforms generator functions into a compatible ES5 representation with similar runtime +// semantics. This is accomplished by first transforming the body of each generator +// function into an intermediate representation that is the compiled into a JavaScript +// switch statement. +// +// Many functions in this transformer will contain comments indicating the expected +// intermediate representation. For illustrative purposes, the following intermediate +// language is used to define this intermediate representation: +// +// .nop - Performs no operation. +// .local NAME, ... - Define local variable declarations. +// .mark LABEL - Mark the location of a label. +// .br LABEL - Jump to a label. If jumping out of a protected +// region, all .finally blocks are executed. +// .brtrue LABEL, (x) - Jump to a label IIF the expression `x` is truthy. +// If jumping out of a protected region, all .finally +// blocks are executed. +// .brfalse LABEL, (x) - Jump to a label IIF the expression `x` is falsey. +// If jumping out of a protected region, all .finally +// blocks are executed. +// .yield (x) - Yield the value of the optional expression `x`. +// Resume at the next label. +// .yieldstar (x) - Delegate yield to the value of the optional +// expression `x`. Resume at the next label. +// NOTE: `x` must be an Iterator, not an Iterable. +// .loop CONTINUE, BREAK - Marks the beginning of a loop. Any "continue" or +// "break" abrupt completions jump to the CONTINUE or +// BREAK labels, respectively. +// .endloop - Marks the end of a loop. +// .with (x) - Marks the beginning of a WithStatement block, using +// the supplied expression. +// .endwith - Marks the end of a WithStatement. +// .switch - Marks the beginning of a SwitchStatement. +// .endswitch - Marks the end of a SwitchStatement. +// .labeled NAME - Marks the beginning of a LabeledStatement with the +// supplied name. +// .endlabeled - Marks the end of a LabeledStatement. +// .try TRY, CATCH, FINALLY, END - Marks the beginning of a protected region, and the +// labels for each block. +// .catch (x) - Marks the beginning of a catch block. +// .finally - Marks the beginning of a finally block. +// .endfinally - Marks the end of a finally block. +// .endtry - Marks the end of a protected region. +// .throw (x) - Throws the value of the expression `x`. +// .return (x) - Returns the value of the expression `x`. +// +// In addition, the illustrative intermediate representation introduces some special +// variables: +// +// %sent% - Either returns the next value sent to the generator, +// returns the result of a delegated yield, or throws +// the exception sent to the generator. +// %error% - Returns the value of the current exception in a +// catch block. +// +// This intermediate representation is then compiled into JavaScript syntax. The resulting +// compilation output looks something like the following: +// +// function f() { +// var /*locals*/; +// /*functions*/ +// return __generator(function (state) { +// switch (state.label) { +// /*cases per label*/ +// } +// }); +// } +// +// Each of the above instructions corresponds to JavaScript emit similar to the following: +// +// .local NAME | var NAME; +// -------------------------------|---------------------------------------------- +// .mark LABEL | case LABEL: +// -------------------------------|---------------------------------------------- +// .br LABEL | return [3 /*break*/, LABEL]; +// -------------------------------|---------------------------------------------- +// .brtrue LABEL, (x) | if (x) return [3 /*break*/, LABEL]; +// -------------------------------|---------------------------------------------- +// .brfalse LABEL, (x) | if (!(x)) return [3, /*break*/, LABEL]; +// -------------------------------|---------------------------------------------- +// .yield (x) | return [4 /*yield*/, x]; +// .mark RESUME | case RESUME: +// a = %sent%; | a = state.sent(); +// -------------------------------|---------------------------------------------- +// .yieldstar (x) | return [5 /*yield**/, x]; +// .mark RESUME | case RESUME: +// a = %sent%; | a = state.sent(); +// -------------------------------|---------------------------------------------- +// .with (_a) | with (_a) { +// a(); | a(); +// | } +// | state.label = LABEL; +// .mark LABEL | case LABEL: +// | with (_a) { +// b(); | b(); +// | } +// .endwith | +// -------------------------------|---------------------------------------------- +// | case 0: +// | state.trys = []; +// | ... +// .try TRY, CATCH, FINALLY, END | +// .mark TRY | case TRY: +// | state.trys.push([TRY, CATCH, FINALLY, END]); +// .nop | +// a(); | a(); +// .br END | return [3 /*break*/, END]; +// .catch (e) | +// .mark CATCH | case CATCH: +// | e = state.sent(); +// b(); | b(); +// .br END | return [3 /*break*/, END]; +// .finally | +// .mark FINALLY | case FINALLY: +// c(); | c(); +// .endfinally | return [7 /*endfinally*/]; +// .endtry | +// .mark END | case END: +/*@internal*/ +var ts; +(function (ts) { + var OpCode; + (function (OpCode) { + OpCode[OpCode["Nop"] = 0] = "Nop"; + OpCode[OpCode["Statement"] = 1] = "Statement"; + OpCode[OpCode["Assign"] = 2] = "Assign"; + OpCode[OpCode["Break"] = 3] = "Break"; + OpCode[OpCode["BreakWhenTrue"] = 4] = "BreakWhenTrue"; + OpCode[OpCode["BreakWhenFalse"] = 5] = "BreakWhenFalse"; + OpCode[OpCode["Yield"] = 6] = "Yield"; + OpCode[OpCode["YieldStar"] = 7] = "YieldStar"; + OpCode[OpCode["Return"] = 8] = "Return"; + OpCode[OpCode["Throw"] = 9] = "Throw"; + OpCode[OpCode["Endfinally"] = 10] = "Endfinally"; // Marks the end of a `finally` block + })(OpCode || (OpCode = {})); + // whether a generated code block is opening or closing at the current operation for a FunctionBuilder + var BlockAction; + (function (BlockAction) { + BlockAction[BlockAction["Open"] = 0] = "Open"; + BlockAction[BlockAction["Close"] = 1] = "Close"; + })(BlockAction || (BlockAction = {})); + // the kind for a generated code block in a FunctionBuilder + var CodeBlockKind; + (function (CodeBlockKind) { + CodeBlockKind[CodeBlockKind["Exception"] = 0] = "Exception"; + CodeBlockKind[CodeBlockKind["With"] = 1] = "With"; + CodeBlockKind[CodeBlockKind["Switch"] = 2] = "Switch"; + CodeBlockKind[CodeBlockKind["Loop"] = 3] = "Loop"; + CodeBlockKind[CodeBlockKind["Labeled"] = 4] = "Labeled"; + })(CodeBlockKind || (CodeBlockKind = {})); + // the state for a generated code exception block + var ExceptionBlockState; + (function (ExceptionBlockState) { + ExceptionBlockState[ExceptionBlockState["Try"] = 0] = "Try"; + ExceptionBlockState[ExceptionBlockState["Catch"] = 1] = "Catch"; + ExceptionBlockState[ExceptionBlockState["Finally"] = 2] = "Finally"; + ExceptionBlockState[ExceptionBlockState["Done"] = 3] = "Done"; + })(ExceptionBlockState || (ExceptionBlockState = {})); + // NOTE: changes to this enum should be reflected in the __generator helper. + var Instruction; + (function (Instruction) { + Instruction[Instruction["Next"] = 0] = "Next"; + Instruction[Instruction["Throw"] = 1] = "Throw"; + Instruction[Instruction["Return"] = 2] = "Return"; + Instruction[Instruction["Break"] = 3] = "Break"; + Instruction[Instruction["Yield"] = 4] = "Yield"; + Instruction[Instruction["YieldStar"] = 5] = "YieldStar"; + Instruction[Instruction["Catch"] = 6] = "Catch"; + Instruction[Instruction["Endfinally"] = 7] = "Endfinally"; + })(Instruction || (Instruction = {})); + function getInstructionName(instruction) { + switch (instruction) { + case 2 /* Return */: return "return"; + case 3 /* Break */: return "break"; + case 4 /* Yield */: return "yield"; + case 5 /* YieldStar */: return "yield*"; + case 7 /* Endfinally */: return "endfinally"; + default: return undefined; // TODO: GH#18217 + } + } + function transformGenerators(context) { + var resumeLexicalEnvironment = context.resumeLexicalEnvironment, endLexicalEnvironment = context.endLexicalEnvironment, hoistFunctionDeclaration = context.hoistFunctionDeclaration, hoistVariableDeclaration = context.hoistVariableDeclaration; + var compilerOptions = context.getCompilerOptions(); + var languageVersion = ts.getEmitScriptTarget(compilerOptions); + var resolver = context.getEmitResolver(); + var previousOnSubstituteNode = context.onSubstituteNode; + context.onSubstituteNode = onSubstituteNode; + var renamedCatchVariables; + var renamedCatchVariableDeclarations; + var inGeneratorFunctionBody; + var inStatementContainingYield; + // The following three arrays store information about generated code blocks. + // All three arrays are correlated by their index. This approach is used over allocating + // objects to store the same information to avoid GC overhead. + // + var blocks; // Information about the code block + var blockOffsets; // The operation offset at which a code block begins or ends + var blockActions; // Whether the code block is opened or closed + var blockStack; // A stack of currently open code blocks + // Labels are used to mark locations in the code that can be the target of a Break (jump) + // operation. These are translated into case clauses in a switch statement. + // The following two arrays are correlated by their index. This approach is used over + // allocating objects to store the same information to avoid GC overhead. + // + var labelOffsets; // The operation offset at which the label is defined. + var labelExpressions; // The NumericLiteral nodes bound to each label. + var nextLabelId = 1; // The next label id to use. + // Operations store information about generated code for the function body. This + // Includes things like statements, assignments, breaks (jumps), and yields. + // The following three arrays are correlated by their index. This approach is used over + // allocating objects to store the same information to avoid GC overhead. + // + var operations; // The operation to perform. + var operationArguments; // The arguments to the operation. + var operationLocations; // The source map location for the operation. + var state; // The name of the state object used by the generator at runtime. + // The following variables store information used by the `build` function: + // + var blockIndex = 0; // The index of the current block. + var labelNumber = 0; // The current label number. + var labelNumbers; + var lastOperationWasAbrupt; // Indicates whether the last operation was abrupt (break/continue). + var lastOperationWasCompletion; // Indicates whether the last operation was a completion (return/throw). + var clauses; // The case clauses generated for labels. + var statements; // The statements for the current label. + var exceptionBlockStack; // A stack of containing exception blocks. + var currentExceptionBlock; // The current exception block. + var withBlockStack; // A stack containing `with` blocks. + return ts.chainBundle(transformSourceFile); + function transformSourceFile(node) { + if (node.isDeclarationFile || (node.transformFlags & 512 /* ContainsGenerator */) === 0) { + return node; + } + var visited = ts.visitEachChild(node, visitor, context); + ts.addEmitHelpers(visited, context.readEmitHelpers()); + return visited; + } + /** + * Visits a node. + * + * @param node The node to visit. + */ + function visitor(node) { + var transformFlags = node.transformFlags; + if (inStatementContainingYield) { + return visitJavaScriptInStatementContainingYield(node); + } + else if (inGeneratorFunctionBody) { + return visitJavaScriptInGeneratorFunctionBody(node); + } + else if (ts.isFunctionLikeDeclaration(node) && node.asteriskToken) { + return visitGenerator(node); + } + else if (transformFlags & 512 /* ContainsGenerator */) { + return ts.visitEachChild(node, visitor, context); + } + else { + return node; + } + } + /** + * Visits a node that is contained within a statement that contains yield. + * + * @param node The node to visit. + */ + function visitJavaScriptInStatementContainingYield(node) { + switch (node.kind) { + case 228 /* DoStatement */: + return visitDoStatement(node); + case 229 /* WhileStatement */: + return visitWhileStatement(node); + case 237 /* SwitchStatement */: + return visitSwitchStatement(node); + case 238 /* LabeledStatement */: + return visitLabeledStatement(node); + default: + return visitJavaScriptInGeneratorFunctionBody(node); + } + } + /** + * Visits a node that is contained within a generator function. + * + * @param node The node to visit. + */ + function visitJavaScriptInGeneratorFunctionBody(node) { + switch (node.kind) { + case 244 /* FunctionDeclaration */: + return visitFunctionDeclaration(node); + case 201 /* FunctionExpression */: + return visitFunctionExpression(node); + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + return visitAccessorDeclaration(node); + case 225 /* VariableStatement */: + return visitVariableStatement(node); + case 230 /* ForStatement */: + return visitForStatement(node); + case 231 /* ForInStatement */: + return visitForInStatement(node); + case 234 /* BreakStatement */: + return visitBreakStatement(node); + case 233 /* ContinueStatement */: + return visitContinueStatement(node); + case 235 /* ReturnStatement */: + return visitReturnStatement(node); + default: + if (node.transformFlags & 262144 /* ContainsYield */) { + return visitJavaScriptContainingYield(node); + } + else if (node.transformFlags & (512 /* ContainsGenerator */ | 1048576 /* ContainsHoistedDeclarationOrCompletion */)) { + return ts.visitEachChild(node, visitor, context); + } + else { + return node; + } + } + } + /** + * Visits a node that contains a YieldExpression. + * + * @param node The node to visit. + */ + function visitJavaScriptContainingYield(node) { + switch (node.kind) { + case 209 /* BinaryExpression */: + return visitBinaryExpression(node); + case 210 /* ConditionalExpression */: + return visitConditionalExpression(node); + case 212 /* YieldExpression */: + return visitYieldExpression(node); + case 192 /* ArrayLiteralExpression */: + return visitArrayLiteralExpression(node); + case 193 /* ObjectLiteralExpression */: + return visitObjectLiteralExpression(node); + case 195 /* ElementAccessExpression */: + return visitElementAccessExpression(node); + case 196 /* CallExpression */: + return visitCallExpression(node); + case 197 /* NewExpression */: + return visitNewExpression(node); + default: + return ts.visitEachChild(node, visitor, context); + } + } + /** + * Visits a generator function. + * + * @param node The node to visit. + */ + function visitGenerator(node) { + switch (node.kind) { + case 244 /* FunctionDeclaration */: + return visitFunctionDeclaration(node); + case 201 /* FunctionExpression */: + return visitFunctionExpression(node); + default: + return ts.Debug.failBadSyntaxKind(node); + } + } + /** + * Visits a function declaration. + * + * This will be called when one of the following conditions are met: + * - The function declaration is a generator function. + * - The function declaration is contained within the body of a generator function. + * + * @param node The node to visit. + */ + function visitFunctionDeclaration(node) { + // Currently, we only support generators that were originally async functions. + if (node.asteriskToken) { + node = ts.setOriginalNode(ts.setTextRange(ts.createFunctionDeclaration( + /*decorators*/ undefined, node.modifiers, + /*asteriskToken*/ undefined, node.name, + /*typeParameters*/ undefined, ts.visitParameterList(node.parameters, visitor, context), + /*type*/ undefined, transformGeneratorFunctionBody(node.body)), + /*location*/ node), node); + } + else { + var savedInGeneratorFunctionBody = inGeneratorFunctionBody; + var savedInStatementContainingYield = inStatementContainingYield; + inGeneratorFunctionBody = false; + inStatementContainingYield = false; + node = ts.visitEachChild(node, visitor, context); + inGeneratorFunctionBody = savedInGeneratorFunctionBody; + inStatementContainingYield = savedInStatementContainingYield; + } + if (inGeneratorFunctionBody) { + // Function declarations in a generator function body are hoisted + // to the top of the lexical scope and elided from the current statement. + hoistFunctionDeclaration(node); + return undefined; + } + else { + return node; + } + } + /** + * Visits a function expression. + * + * This will be called when one of the following conditions are met: + * - The function expression is a generator function. + * - The function expression is contained within the body of a generator function. + * + * @param node The node to visit. + */ + function visitFunctionExpression(node) { + // Currently, we only support generators that were originally async functions. + if (node.asteriskToken) { + node = ts.setOriginalNode(ts.setTextRange(ts.createFunctionExpression( + /*modifiers*/ undefined, + /*asteriskToken*/ undefined, node.name, + /*typeParameters*/ undefined, ts.visitParameterList(node.parameters, visitor, context), + /*type*/ undefined, transformGeneratorFunctionBody(node.body)), + /*location*/ node), node); + } + else { + var savedInGeneratorFunctionBody = inGeneratorFunctionBody; + var savedInStatementContainingYield = inStatementContainingYield; + inGeneratorFunctionBody = false; + inStatementContainingYield = false; + node = ts.visitEachChild(node, visitor, context); + inGeneratorFunctionBody = savedInGeneratorFunctionBody; + inStatementContainingYield = savedInStatementContainingYield; + } + return node; + } + /** + * Visits a get or set accessor declaration. + * + * This will be called when one of the following conditions are met: + * - The accessor is contained within the body of a generator function. + * + * @param node The node to visit. + */ + function visitAccessorDeclaration(node) { + var savedInGeneratorFunctionBody = inGeneratorFunctionBody; + var savedInStatementContainingYield = inStatementContainingYield; + inGeneratorFunctionBody = false; + inStatementContainingYield = false; + node = ts.visitEachChild(node, visitor, context); + inGeneratorFunctionBody = savedInGeneratorFunctionBody; + inStatementContainingYield = savedInStatementContainingYield; + return node; + } + /** + * Transforms the body of a generator function declaration. + * + * @param node The function body to transform. + */ + function transformGeneratorFunctionBody(body) { + // Save existing generator state + var statements = []; + var savedInGeneratorFunctionBody = inGeneratorFunctionBody; + var savedInStatementContainingYield = inStatementContainingYield; + var savedBlocks = blocks; + var savedBlockOffsets = blockOffsets; + var savedBlockActions = blockActions; + var savedBlockStack = blockStack; + var savedLabelOffsets = labelOffsets; + var savedLabelExpressions = labelExpressions; + var savedNextLabelId = nextLabelId; + var savedOperations = operations; + var savedOperationArguments = operationArguments; + var savedOperationLocations = operationLocations; + var savedState = state; + // Initialize generator state + inGeneratorFunctionBody = true; + inStatementContainingYield = false; + blocks = undefined; + blockOffsets = undefined; + blockActions = undefined; + blockStack = undefined; + labelOffsets = undefined; + labelExpressions = undefined; + nextLabelId = 1; + operations = undefined; + operationArguments = undefined; + operationLocations = undefined; + state = ts.createTempVariable(/*recordTempVariable*/ undefined); + // Build the generator + resumeLexicalEnvironment(); + var statementOffset = ts.addPrologue(statements, body.statements, /*ensureUseStrict*/ false, visitor); + transformAndEmitStatements(body.statements, statementOffset); + var buildResult = build(); + ts.insertStatementsAfterStandardPrologue(statements, endLexicalEnvironment()); + statements.push(ts.createReturn(buildResult)); + // Restore previous generator state + inGeneratorFunctionBody = savedInGeneratorFunctionBody; + inStatementContainingYield = savedInStatementContainingYield; + blocks = savedBlocks; + blockOffsets = savedBlockOffsets; + blockActions = savedBlockActions; + blockStack = savedBlockStack; + labelOffsets = savedLabelOffsets; + labelExpressions = savedLabelExpressions; + nextLabelId = savedNextLabelId; + operations = savedOperations; + operationArguments = savedOperationArguments; + operationLocations = savedOperationLocations; + state = savedState; + return ts.setTextRange(ts.createBlock(statements, body.multiLine), body); + } + /** + * Visits a variable statement. + * + * This will be called when one of the following conditions are met: + * - The variable statement is contained within the body of a generator function. + * + * @param node The node to visit. + */ + function visitVariableStatement(node) { + if (node.transformFlags & 262144 /* ContainsYield */) { + transformAndEmitVariableDeclarationList(node.declarationList); + return undefined; + } + else { + // Do not hoist custom prologues. + if (ts.getEmitFlags(node) & 1048576 /* CustomPrologue */) { + return node; + } + for (var _i = 0, _a = node.declarationList.declarations; _i < _a.length; _i++) { + var variable = _a[_i]; + hoistVariableDeclaration(variable.name); + } + var variables = ts.getInitializedVariables(node.declarationList); + if (variables.length === 0) { + return undefined; + } + return ts.setSourceMapRange(ts.createExpressionStatement(ts.inlineExpressions(ts.map(variables, transformInitializedVariable))), node); + } + } + /** + * Visits a binary expression. + * + * This will be called when one of the following conditions are met: + * - The node contains a YieldExpression. + * + * @param node The node to visit. + */ + function visitBinaryExpression(node) { + var assoc = ts.getExpressionAssociativity(node); + switch (assoc) { + case 0 /* Left */: + return visitLeftAssociativeBinaryExpression(node); + case 1 /* Right */: + return visitRightAssociativeBinaryExpression(node); + default: + return ts.Debug.assertNever(assoc); + } + } + /** + * Visits a right-associative binary expression containing `yield`. + * + * @param node The node to visit. + */ + function visitRightAssociativeBinaryExpression(node) { + var left = node.left, right = node.right; + if (containsYield(right)) { + var target = void 0; + switch (left.kind) { + case 194 /* PropertyAccessExpression */: + // [source] + // a.b = yield; + // + // [intermediate] + // .local _a + // _a = a; + // .yield resumeLabel + // .mark resumeLabel + // _a.b = %sent%; + target = ts.updatePropertyAccess(left, cacheExpression(ts.visitNode(left.expression, visitor, ts.isLeftHandSideExpression)), left.name); + break; + case 195 /* ElementAccessExpression */: + // [source] + // a[b] = yield; + // + // [intermediate] + // .local _a, _b + // _a = a; + // _b = b; + // .yield resumeLabel + // .mark resumeLabel + // _a[_b] = %sent%; + target = ts.updateElementAccess(left, cacheExpression(ts.visitNode(left.expression, visitor, ts.isLeftHandSideExpression)), cacheExpression(ts.visitNode(left.argumentExpression, visitor, ts.isExpression))); + break; + default: + target = ts.visitNode(left, visitor, ts.isExpression); + break; + } + var operator = node.operatorToken.kind; + if (ts.isCompoundAssignment(operator)) { + return ts.setTextRange(ts.createAssignment(target, ts.setTextRange(ts.createBinary(cacheExpression(target), ts.getNonAssignmentOperatorForCompoundAssignment(operator), ts.visitNode(right, visitor, ts.isExpression)), node)), node); + } + else { + return ts.updateBinary(node, target, ts.visitNode(right, visitor, ts.isExpression)); + } + } + return ts.visitEachChild(node, visitor, context); + } + function visitLeftAssociativeBinaryExpression(node) { + if (containsYield(node.right)) { + if (ts.isLogicalOperator(node.operatorToken.kind)) { + return visitLogicalBinaryExpression(node); + } + else if (node.operatorToken.kind === 27 /* CommaToken */) { + return visitCommaExpression(node); + } + // [source] + // a() + (yield) + c() + // + // [intermediate] + // .local _a + // _a = a(); + // .yield resumeLabel + // _a + %sent% + c() + var clone_6 = ts.getMutableClone(node); + clone_6.left = cacheExpression(ts.visitNode(node.left, visitor, ts.isExpression)); + clone_6.right = ts.visitNode(node.right, visitor, ts.isExpression); + return clone_6; + } + return ts.visitEachChild(node, visitor, context); + } + /** + * Visits a logical binary expression containing `yield`. + * + * @param node A node to visit. + */ + function visitLogicalBinaryExpression(node) { + // Logical binary expressions (`&&` and `||`) are shortcutting expressions and need + // to be transformed as such: + // + // [source] + // x = a() && yield; + // + // [intermediate] + // .local _a + // _a = a(); + // .brfalse resultLabel, (_a) + // .yield resumeLabel + // .mark resumeLabel + // _a = %sent%; + // .mark resultLabel + // x = _a; + // + // [source] + // x = a() || yield; + // + // [intermediate] + // .local _a + // _a = a(); + // .brtrue resultLabel, (_a) + // .yield resumeLabel + // .mark resumeLabel + // _a = %sent%; + // .mark resultLabel + // x = _a; + var resultLabel = defineLabel(); + var resultLocal = declareLocal(); + emitAssignment(resultLocal, ts.visitNode(node.left, visitor, ts.isExpression), /*location*/ node.left); + if (node.operatorToken.kind === 55 /* AmpersandAmpersandToken */) { + // Logical `&&` shortcuts when the left-hand operand is falsey. + emitBreakWhenFalse(resultLabel, resultLocal, /*location*/ node.left); + } + else { + // Logical `||` shortcuts when the left-hand operand is truthy. + emitBreakWhenTrue(resultLabel, resultLocal, /*location*/ node.left); + } + emitAssignment(resultLocal, ts.visitNode(node.right, visitor, ts.isExpression), /*location*/ node.right); + markLabel(resultLabel); + return resultLocal; + } + /** + * Visits a comma expression containing `yield`. + * + * @param node The node to visit. + */ + function visitCommaExpression(node) { + // [source] + // x = a(), yield, b(); + // + // [intermediate] + // a(); + // .yield resumeLabel + // .mark resumeLabel + // x = %sent%, b(); + var pendingExpressions = []; + visit(node.left); + visit(node.right); + return ts.inlineExpressions(pendingExpressions); + function visit(node) { + if (ts.isBinaryExpression(node) && node.operatorToken.kind === 27 /* CommaToken */) { + visit(node.left); + visit(node.right); + } + else { + if (containsYield(node) && pendingExpressions.length > 0) { + emitWorker(1 /* Statement */, [ts.createExpressionStatement(ts.inlineExpressions(pendingExpressions))]); + pendingExpressions = []; + } + pendingExpressions.push(ts.visitNode(node, visitor, ts.isExpression)); + } + } + } + /** + * Visits a conditional expression containing `yield`. + * + * @param node The node to visit. + */ + function visitConditionalExpression(node) { + // [source] + // x = a() ? yield : b(); + // + // [intermediate] + // .local _a + // .brfalse whenFalseLabel, (a()) + // .yield resumeLabel + // .mark resumeLabel + // _a = %sent%; + // .br resultLabel + // .mark whenFalseLabel + // _a = b(); + // .mark resultLabel + // x = _a; + // We only need to perform a specific transformation if a `yield` expression exists + // in either the `whenTrue` or `whenFalse` branches. + // A `yield` in the condition will be handled by the normal visitor. + if (containsYield(node.whenTrue) || containsYield(node.whenFalse)) { + var whenFalseLabel = defineLabel(); + var resultLabel = defineLabel(); + var resultLocal = declareLocal(); + emitBreakWhenFalse(whenFalseLabel, ts.visitNode(node.condition, visitor, ts.isExpression), /*location*/ node.condition); + emitAssignment(resultLocal, ts.visitNode(node.whenTrue, visitor, ts.isExpression), /*location*/ node.whenTrue); + emitBreak(resultLabel); + markLabel(whenFalseLabel); + emitAssignment(resultLocal, ts.visitNode(node.whenFalse, visitor, ts.isExpression), /*location*/ node.whenFalse); + markLabel(resultLabel); + return resultLocal; + } + return ts.visitEachChild(node, visitor, context); + } + /** + * Visits a `yield` expression. + * + * @param node The node to visit. + */ + function visitYieldExpression(node) { + // [source] + // x = yield a(); + // + // [intermediate] + // .yield resumeLabel, (a()) + // .mark resumeLabel + // x = %sent%; + var resumeLabel = defineLabel(); + var expression = ts.visitNode(node.expression, visitor, ts.isExpression); + if (node.asteriskToken) { + var iterator = (ts.getEmitFlags(node.expression) & 8388608 /* Iterator */) === 0 + ? ts.createValuesHelper(context, expression, /*location*/ node) + : expression; + emitYieldStar(iterator, /*location*/ node); + } + else { + emitYield(expression, /*location*/ node); + } + markLabel(resumeLabel); + return createGeneratorResume(/*location*/ node); + } + /** + * Visits an ArrayLiteralExpression that contains a YieldExpression. + * + * @param node The node to visit. + */ + function visitArrayLiteralExpression(node) { + return visitElements(node.elements, /*leadingElement*/ undefined, /*location*/ undefined, node.multiLine); + } + /** + * Visits an array of expressions containing one or more YieldExpression nodes + * and returns an expression for the resulting value. + * + * @param elements The elements to visit. + * @param multiLine Whether array literals created should be emitted on multiple lines. + */ + function visitElements(elements, leadingElement, location, multiLine) { + // [source] + // ar = [1, yield, 2]; + // + // [intermediate] + // .local _a + // _a = [1]; + // .yield resumeLabel + // .mark resumeLabel + // ar = _a.concat([%sent%, 2]); + var numInitialElements = countInitialNodesWithoutYield(elements); + var temp; + if (numInitialElements > 0) { + temp = declareLocal(); + var initialElements = ts.visitNodes(elements, visitor, ts.isExpression, 0, numInitialElements); + emitAssignment(temp, ts.createArrayLiteral(leadingElement + ? __spreadArrays([leadingElement], initialElements) : initialElements)); + leadingElement = undefined; + } + var expressions = ts.reduceLeft(elements, reduceElement, [], numInitialElements); + return temp + ? ts.createArrayConcat(temp, [ts.createArrayLiteral(expressions, multiLine)]) + : ts.setTextRange(ts.createArrayLiteral(leadingElement ? __spreadArrays([leadingElement], expressions) : expressions, multiLine), location); + function reduceElement(expressions, element) { + if (containsYield(element) && expressions.length > 0) { + var hasAssignedTemp = temp !== undefined; + if (!temp) { + temp = declareLocal(); + } + emitAssignment(temp, hasAssignedTemp + ? ts.createArrayConcat(temp, [ts.createArrayLiteral(expressions, multiLine)]) + : ts.createArrayLiteral(leadingElement ? __spreadArrays([leadingElement], expressions) : expressions, multiLine)); + leadingElement = undefined; + expressions = []; + } + expressions.push(ts.visitNode(element, visitor, ts.isExpression)); + return expressions; + } + } + function visitObjectLiteralExpression(node) { + // [source] + // o = { + // a: 1, + // b: yield, + // c: 2 + // }; + // + // [intermediate] + // .local _a + // _a = { + // a: 1 + // }; + // .yield resumeLabel + // .mark resumeLabel + // o = (_a.b = %sent%, + // _a.c = 2, + // _a); + var properties = node.properties; + var multiLine = node.multiLine; + var numInitialProperties = countInitialNodesWithoutYield(properties); + var temp = declareLocal(); + emitAssignment(temp, ts.createObjectLiteral(ts.visitNodes(properties, visitor, ts.isObjectLiteralElementLike, 0, numInitialProperties), multiLine)); + var expressions = ts.reduceLeft(properties, reduceProperty, [], numInitialProperties); + expressions.push(multiLine ? ts.startOnNewLine(ts.getMutableClone(temp)) : temp); + return ts.inlineExpressions(expressions); + function reduceProperty(expressions, property) { + if (containsYield(property) && expressions.length > 0) { + emitStatement(ts.createExpressionStatement(ts.inlineExpressions(expressions))); + expressions = []; + } + var expression = ts.createExpressionForObjectLiteralElementLike(node, property, temp); + var visited = ts.visitNode(expression, visitor, ts.isExpression); + if (visited) { + if (multiLine) { + ts.startOnNewLine(visited); + } + expressions.push(visited); + } + return expressions; + } + } + /** + * Visits an ElementAccessExpression that contains a YieldExpression. + * + * @param node The node to visit. + */ + function visitElementAccessExpression(node) { + if (containsYield(node.argumentExpression)) { + // [source] + // a = x[yield]; + // + // [intermediate] + // .local _a + // _a = x; + // .yield resumeLabel + // .mark resumeLabel + // a = _a[%sent%] + var clone_7 = ts.getMutableClone(node); + clone_7.expression = cacheExpression(ts.visitNode(node.expression, visitor, ts.isLeftHandSideExpression)); + clone_7.argumentExpression = ts.visitNode(node.argumentExpression, visitor, ts.isExpression); + return clone_7; + } + return ts.visitEachChild(node, visitor, context); + } + function visitCallExpression(node) { + if (!ts.isImportCall(node) && ts.forEach(node.arguments, containsYield)) { + // [source] + // a.b(1, yield, 2); + // + // [intermediate] + // .local _a, _b, _c + // _b = (_a = a).b; + // _c = [1]; + // .yield resumeLabel + // .mark resumeLabel + // _b.apply(_a, _c.concat([%sent%, 2])); + var _a = ts.createCallBinding(node.expression, hoistVariableDeclaration, languageVersion, /*cacheIdentifiers*/ true), target = _a.target, thisArg = _a.thisArg; + return ts.setOriginalNode(ts.createFunctionApply(cacheExpression(ts.visitNode(target, visitor, ts.isLeftHandSideExpression)), thisArg, visitElements(node.arguments), + /*location*/ node), node); + } + return ts.visitEachChild(node, visitor, context); + } + function visitNewExpression(node) { + if (ts.forEach(node.arguments, containsYield)) { + // [source] + // new a.b(1, yield, 2); + // + // [intermediate] + // .local _a, _b, _c + // _b = (_a = a.b).bind; + // _c = [1]; + // .yield resumeLabel + // .mark resumeLabel + // new (_b.apply(_a, _c.concat([%sent%, 2]))); + var _a = ts.createCallBinding(ts.createPropertyAccess(node.expression, "bind"), hoistVariableDeclaration), target = _a.target, thisArg = _a.thisArg; + return ts.setOriginalNode(ts.setTextRange(ts.createNew(ts.createFunctionApply(cacheExpression(ts.visitNode(target, visitor, ts.isExpression)), thisArg, visitElements(node.arguments, + /*leadingElement*/ ts.createVoidZero())), + /*typeArguments*/ undefined, []), node), node); + } + return ts.visitEachChild(node, visitor, context); + } + function transformAndEmitStatements(statements, start) { + if (start === void 0) { start = 0; } + var numStatements = statements.length; + for (var i = start; i < numStatements; i++) { + transformAndEmitStatement(statements[i]); + } + } + function transformAndEmitEmbeddedStatement(node) { + if (ts.isBlock(node)) { + transformAndEmitStatements(node.statements); + } + else { + transformAndEmitStatement(node); + } + } + function transformAndEmitStatement(node) { + var savedInStatementContainingYield = inStatementContainingYield; + if (!inStatementContainingYield) { + inStatementContainingYield = containsYield(node); + } + transformAndEmitStatementWorker(node); + inStatementContainingYield = savedInStatementContainingYield; + } + function transformAndEmitStatementWorker(node) { + switch (node.kind) { + case 223 /* Block */: + return transformAndEmitBlock(node); + case 226 /* ExpressionStatement */: + return transformAndEmitExpressionStatement(node); + case 227 /* IfStatement */: + return transformAndEmitIfStatement(node); + case 228 /* DoStatement */: + return transformAndEmitDoStatement(node); + case 229 /* WhileStatement */: + return transformAndEmitWhileStatement(node); + case 230 /* ForStatement */: + return transformAndEmitForStatement(node); + case 231 /* ForInStatement */: + return transformAndEmitForInStatement(node); + case 233 /* ContinueStatement */: + return transformAndEmitContinueStatement(node); + case 234 /* BreakStatement */: + return transformAndEmitBreakStatement(node); + case 235 /* ReturnStatement */: + return transformAndEmitReturnStatement(node); + case 236 /* WithStatement */: + return transformAndEmitWithStatement(node); + case 237 /* SwitchStatement */: + return transformAndEmitSwitchStatement(node); + case 238 /* LabeledStatement */: + return transformAndEmitLabeledStatement(node); + case 239 /* ThrowStatement */: + return transformAndEmitThrowStatement(node); + case 240 /* TryStatement */: + return transformAndEmitTryStatement(node); + default: + return emitStatement(ts.visitNode(node, visitor, ts.isStatement)); + } + } + function transformAndEmitBlock(node) { + if (containsYield(node)) { + transformAndEmitStatements(node.statements); + } + else { + emitStatement(ts.visitNode(node, visitor, ts.isStatement)); + } + } + function transformAndEmitExpressionStatement(node) { + emitStatement(ts.visitNode(node, visitor, ts.isStatement)); + } + function transformAndEmitVariableDeclarationList(node) { + for (var _i = 0, _a = node.declarations; _i < _a.length; _i++) { + var variable = _a[_i]; + var name = ts.getSynthesizedClone(variable.name); + ts.setCommentRange(name, variable.name); + hoistVariableDeclaration(name); + } + var variables = ts.getInitializedVariables(node); + var numVariables = variables.length; + var variablesWritten = 0; + var pendingExpressions = []; + while (variablesWritten < numVariables) { + for (var i = variablesWritten; i < numVariables; i++) { + var variable = variables[i]; + if (containsYield(variable.initializer) && pendingExpressions.length > 0) { + break; + } + pendingExpressions.push(transformInitializedVariable(variable)); + } + if (pendingExpressions.length) { + emitStatement(ts.createExpressionStatement(ts.inlineExpressions(pendingExpressions))); + variablesWritten += pendingExpressions.length; + pendingExpressions = []; + } + } + return undefined; + } + function transformInitializedVariable(node) { + return ts.setSourceMapRange(ts.createAssignment(ts.setSourceMapRange(ts.getSynthesizedClone(node.name), node.name), ts.visitNode(node.initializer, visitor, ts.isExpression)), node); + } + function transformAndEmitIfStatement(node) { + if (containsYield(node)) { + // [source] + // if (x) + // /*thenStatement*/ + // else + // /*elseStatement*/ + // + // [intermediate] + // .brfalse elseLabel, (x) + // /*thenStatement*/ + // .br endLabel + // .mark elseLabel + // /*elseStatement*/ + // .mark endLabel + if (containsYield(node.thenStatement) || containsYield(node.elseStatement)) { + var endLabel = defineLabel(); + var elseLabel = node.elseStatement ? defineLabel() : undefined; + emitBreakWhenFalse(node.elseStatement ? elseLabel : endLabel, ts.visitNode(node.expression, visitor, ts.isExpression), /*location*/ node.expression); + transformAndEmitEmbeddedStatement(node.thenStatement); + if (node.elseStatement) { + emitBreak(endLabel); + markLabel(elseLabel); + transformAndEmitEmbeddedStatement(node.elseStatement); + } + markLabel(endLabel); + } + else { + emitStatement(ts.visitNode(node, visitor, ts.isStatement)); + } + } + else { + emitStatement(ts.visitNode(node, visitor, ts.isStatement)); + } + } + function transformAndEmitDoStatement(node) { + if (containsYield(node)) { + // [source] + // do { + // /*body*/ + // } + // while (i < 10); + // + // [intermediate] + // .loop conditionLabel, endLabel + // .mark loopLabel + // /*body*/ + // .mark conditionLabel + // .brtrue loopLabel, (i < 10) + // .endloop + // .mark endLabel + var conditionLabel = defineLabel(); + var loopLabel = defineLabel(); + beginLoopBlock(/*continueLabel*/ conditionLabel); + markLabel(loopLabel); + transformAndEmitEmbeddedStatement(node.statement); + markLabel(conditionLabel); + emitBreakWhenTrue(loopLabel, ts.visitNode(node.expression, visitor, ts.isExpression)); + endLoopBlock(); + } + else { + emitStatement(ts.visitNode(node, visitor, ts.isStatement)); + } + } + function visitDoStatement(node) { + if (inStatementContainingYield) { + beginScriptLoopBlock(); + node = ts.visitEachChild(node, visitor, context); + endLoopBlock(); + return node; + } + else { + return ts.visitEachChild(node, visitor, context); + } + } + function transformAndEmitWhileStatement(node) { + if (containsYield(node)) { + // [source] + // while (i < 10) { + // /*body*/ + // } + // + // [intermediate] + // .loop loopLabel, endLabel + // .mark loopLabel + // .brfalse endLabel, (i < 10) + // /*body*/ + // .br loopLabel + // .endloop + // .mark endLabel + var loopLabel = defineLabel(); + var endLabel = beginLoopBlock(loopLabel); + markLabel(loopLabel); + emitBreakWhenFalse(endLabel, ts.visitNode(node.expression, visitor, ts.isExpression)); + transformAndEmitEmbeddedStatement(node.statement); + emitBreak(loopLabel); + endLoopBlock(); + } + else { + emitStatement(ts.visitNode(node, visitor, ts.isStatement)); + } + } + function visitWhileStatement(node) { + if (inStatementContainingYield) { + beginScriptLoopBlock(); + node = ts.visitEachChild(node, visitor, context); + endLoopBlock(); + return node; + } + else { + return ts.visitEachChild(node, visitor, context); + } + } + function transformAndEmitForStatement(node) { + if (containsYield(node)) { + // [source] + // for (var i = 0; i < 10; i++) { + // /*body*/ + // } + // + // [intermediate] + // .local i + // i = 0; + // .loop incrementLabel, endLoopLabel + // .mark conditionLabel + // .brfalse endLoopLabel, (i < 10) + // /*body*/ + // .mark incrementLabel + // i++; + // .br conditionLabel + // .endloop + // .mark endLoopLabel + var conditionLabel = defineLabel(); + var incrementLabel = defineLabel(); + var endLabel = beginLoopBlock(incrementLabel); + if (node.initializer) { + var initializer = node.initializer; + if (ts.isVariableDeclarationList(initializer)) { + transformAndEmitVariableDeclarationList(initializer); + } + else { + emitStatement(ts.setTextRange(ts.createExpressionStatement(ts.visitNode(initializer, visitor, ts.isExpression)), initializer)); + } + } + markLabel(conditionLabel); + if (node.condition) { + emitBreakWhenFalse(endLabel, ts.visitNode(node.condition, visitor, ts.isExpression)); + } + transformAndEmitEmbeddedStatement(node.statement); + markLabel(incrementLabel); + if (node.incrementor) { + emitStatement(ts.setTextRange(ts.createExpressionStatement(ts.visitNode(node.incrementor, visitor, ts.isExpression)), node.incrementor)); + } + emitBreak(conditionLabel); + endLoopBlock(); + } + else { + emitStatement(ts.visitNode(node, visitor, ts.isStatement)); + } + } + function visitForStatement(node) { + if (inStatementContainingYield) { + beginScriptLoopBlock(); + } + var initializer = node.initializer; + if (initializer && ts.isVariableDeclarationList(initializer)) { + for (var _i = 0, _a = initializer.declarations; _i < _a.length; _i++) { + var variable = _a[_i]; + hoistVariableDeclaration(variable.name); + } + var variables = ts.getInitializedVariables(initializer); + node = ts.updateFor(node, variables.length > 0 + ? ts.inlineExpressions(ts.map(variables, transformInitializedVariable)) + : undefined, ts.visitNode(node.condition, visitor, ts.isExpression), ts.visitNode(node.incrementor, visitor, ts.isExpression), ts.visitNode(node.statement, visitor, ts.isStatement, ts.liftToBlock)); + } + else { + node = ts.visitEachChild(node, visitor, context); + } + if (inStatementContainingYield) { + endLoopBlock(); + } + return node; + } + function transformAndEmitForInStatement(node) { + // TODO(rbuckton): Source map locations + if (containsYield(node)) { + // [source] + // for (var p in o) { + // /*body*/ + // } + // + // [intermediate] + // .local _a, _b, _i + // _a = []; + // for (_b in o) _a.push(_b); + // _i = 0; + // .loop incrementLabel, endLoopLabel + // .mark conditionLabel + // .brfalse endLoopLabel, (_i < _a.length) + // p = _a[_i]; + // /*body*/ + // .mark incrementLabel + // _b++; + // .br conditionLabel + // .endloop + // .mark endLoopLabel + var keysArray = declareLocal(); // _a + var key = declareLocal(); // _b + var keysIndex = ts.createLoopVariable(); // _i + var initializer = node.initializer; + hoistVariableDeclaration(keysIndex); + emitAssignment(keysArray, ts.createArrayLiteral()); + emitStatement(ts.createForIn(key, ts.visitNode(node.expression, visitor, ts.isExpression), ts.createExpressionStatement(ts.createCall(ts.createPropertyAccess(keysArray, "push"), + /*typeArguments*/ undefined, [key])))); + emitAssignment(keysIndex, ts.createLiteral(0)); + var conditionLabel = defineLabel(); + var incrementLabel = defineLabel(); + var endLabel = beginLoopBlock(incrementLabel); + markLabel(conditionLabel); + emitBreakWhenFalse(endLabel, ts.createLessThan(keysIndex, ts.createPropertyAccess(keysArray, "length"))); + var variable = void 0; + if (ts.isVariableDeclarationList(initializer)) { + for (var _i = 0, _a = initializer.declarations; _i < _a.length; _i++) { + var variable_1 = _a[_i]; + hoistVariableDeclaration(variable_1.name); + } + variable = ts.getSynthesizedClone(initializer.declarations[0].name); + } + else { + variable = ts.visitNode(initializer, visitor, ts.isExpression); + ts.Debug.assert(ts.isLeftHandSideExpression(variable)); + } + emitAssignment(variable, ts.createElementAccess(keysArray, keysIndex)); + transformAndEmitEmbeddedStatement(node.statement); + markLabel(incrementLabel); + emitStatement(ts.createExpressionStatement(ts.createPostfixIncrement(keysIndex))); + emitBreak(conditionLabel); + endLoopBlock(); + } + else { + emitStatement(ts.visitNode(node, visitor, ts.isStatement)); + } + } + function visitForInStatement(node) { + // [source] + // for (var x in a) { + // /*body*/ + // } + // + // [intermediate] + // .local x + // .loop + // for (x in a) { + // /*body*/ + // } + // .endloop + if (inStatementContainingYield) { + beginScriptLoopBlock(); + } + var initializer = node.initializer; + if (ts.isVariableDeclarationList(initializer)) { + for (var _i = 0, _a = initializer.declarations; _i < _a.length; _i++) { + var variable = _a[_i]; + hoistVariableDeclaration(variable.name); + } + node = ts.updateForIn(node, initializer.declarations[0].name, ts.visitNode(node.expression, visitor, ts.isExpression), ts.visitNode(node.statement, visitor, ts.isStatement, ts.liftToBlock)); + } + else { + node = ts.visitEachChild(node, visitor, context); + } + if (inStatementContainingYield) { + endLoopBlock(); + } + return node; + } + function transformAndEmitContinueStatement(node) { + var label = findContinueTarget(node.label ? ts.idText(node.label) : undefined); + if (label > 0) { + emitBreak(label, /*location*/ node); + } + else { + // invalid continue without a containing loop. Leave the node as is, per #17875. + emitStatement(node); + } + } + function visitContinueStatement(node) { + if (inStatementContainingYield) { + var label = findContinueTarget(node.label && ts.idText(node.label)); + if (label > 0) { + return createInlineBreak(label, /*location*/ node); + } + } + return ts.visitEachChild(node, visitor, context); + } + function transformAndEmitBreakStatement(node) { + var label = findBreakTarget(node.label ? ts.idText(node.label) : undefined); + if (label > 0) { + emitBreak(label, /*location*/ node); + } + else { + // invalid break without a containing loop, switch, or labeled statement. Leave the node as is, per #17875. + emitStatement(node); + } + } + function visitBreakStatement(node) { + if (inStatementContainingYield) { + var label = findBreakTarget(node.label && ts.idText(node.label)); + if (label > 0) { + return createInlineBreak(label, /*location*/ node); + } + } + return ts.visitEachChild(node, visitor, context); + } + function transformAndEmitReturnStatement(node) { + emitReturn(ts.visitNode(node.expression, visitor, ts.isExpression), + /*location*/ node); + } + function visitReturnStatement(node) { + return createInlineReturn(ts.visitNode(node.expression, visitor, ts.isExpression), + /*location*/ node); + } + function transformAndEmitWithStatement(node) { + if (containsYield(node)) { + // [source] + // with (x) { + // /*body*/ + // } + // + // [intermediate] + // .with (x) + // /*body*/ + // .endwith + beginWithBlock(cacheExpression(ts.visitNode(node.expression, visitor, ts.isExpression))); + transformAndEmitEmbeddedStatement(node.statement); + endWithBlock(); + } + else { + emitStatement(ts.visitNode(node, visitor, ts.isStatement)); + } + } + function transformAndEmitSwitchStatement(node) { + if (containsYield(node.caseBlock)) { + // [source] + // switch (x) { + // case a: + // /*caseStatements*/ + // case b: + // /*caseStatements*/ + // default: + // /*defaultStatements*/ + // } + // + // [intermediate] + // .local _a + // .switch endLabel + // _a = x; + // switch (_a) { + // case a: + // .br clauseLabels[0] + // } + // switch (_a) { + // case b: + // .br clauseLabels[1] + // } + // .br clauseLabels[2] + // .mark clauseLabels[0] + // /*caseStatements*/ + // .mark clauseLabels[1] + // /*caseStatements*/ + // .mark clauseLabels[2] + // /*caseStatements*/ + // .endswitch + // .mark endLabel + var caseBlock = node.caseBlock; + var numClauses = caseBlock.clauses.length; + var endLabel = beginSwitchBlock(); + var expression = cacheExpression(ts.visitNode(node.expression, visitor, ts.isExpression)); + // Create labels for each clause and find the index of the first default clause. + var clauseLabels = []; + var defaultClauseIndex = -1; + for (var i = 0; i < numClauses; i++) { + var clause = caseBlock.clauses[i]; + clauseLabels.push(defineLabel()); + if (clause.kind === 278 /* DefaultClause */ && defaultClauseIndex === -1) { + defaultClauseIndex = i; + } + } + // Emit switch statements for each run of case clauses either from the first case + // clause or the next case clause with a `yield` in its expression, up to the next + // case clause with a `yield` in its expression. + var clausesWritten = 0; + var pendingClauses = []; + while (clausesWritten < numClauses) { + var defaultClausesSkipped = 0; + for (var i = clausesWritten; i < numClauses; i++) { + var clause = caseBlock.clauses[i]; + if (clause.kind === 277 /* CaseClause */) { + if (containsYield(clause.expression) && pendingClauses.length > 0) { + break; + } + pendingClauses.push(ts.createCaseClause(ts.visitNode(clause.expression, visitor, ts.isExpression), [ + createInlineBreak(clauseLabels[i], /*location*/ clause.expression) + ])); + } + else { + defaultClausesSkipped++; + } + } + if (pendingClauses.length) { + emitStatement(ts.createSwitch(expression, ts.createCaseBlock(pendingClauses))); + clausesWritten += pendingClauses.length; + pendingClauses = []; + } + if (defaultClausesSkipped > 0) { + clausesWritten += defaultClausesSkipped; + defaultClausesSkipped = 0; + } + } + if (defaultClauseIndex >= 0) { + emitBreak(clauseLabels[defaultClauseIndex]); + } + else { + emitBreak(endLabel); + } + for (var i = 0; i < numClauses; i++) { + markLabel(clauseLabels[i]); + transformAndEmitStatements(caseBlock.clauses[i].statements); + } + endSwitchBlock(); + } + else { + emitStatement(ts.visitNode(node, visitor, ts.isStatement)); + } + } + function visitSwitchStatement(node) { + if (inStatementContainingYield) { + beginScriptSwitchBlock(); + } + node = ts.visitEachChild(node, visitor, context); + if (inStatementContainingYield) { + endSwitchBlock(); + } + return node; + } + function transformAndEmitLabeledStatement(node) { + if (containsYield(node)) { + // [source] + // x: { + // /*body*/ + // } + // + // [intermediate] + // .labeled "x", endLabel + // /*body*/ + // .endlabeled + // .mark endLabel + beginLabeledBlock(ts.idText(node.label)); + transformAndEmitEmbeddedStatement(node.statement); + endLabeledBlock(); + } + else { + emitStatement(ts.visitNode(node, visitor, ts.isStatement)); + } + } + function visitLabeledStatement(node) { + if (inStatementContainingYield) { + beginScriptLabeledBlock(ts.idText(node.label)); + } + node = ts.visitEachChild(node, visitor, context); + if (inStatementContainingYield) { + endLabeledBlock(); + } + return node; + } + function transformAndEmitThrowStatement(node) { + emitThrow(ts.visitNode(node.expression, visitor, ts.isExpression), + /*location*/ node); + } + function transformAndEmitTryStatement(node) { + if (containsYield(node)) { + // [source] + // try { + // /*tryBlock*/ + // } + // catch (e) { + // /*catchBlock*/ + // } + // finally { + // /*finallyBlock*/ + // } + // + // [intermediate] + // .local _a + // .try tryLabel, catchLabel, finallyLabel, endLabel + // .mark tryLabel + // .nop + // /*tryBlock*/ + // .br endLabel + // .catch + // .mark catchLabel + // _a = %error%; + // /*catchBlock*/ + // .br endLabel + // .finally + // .mark finallyLabel + // /*finallyBlock*/ + // .endfinally + // .endtry + // .mark endLabel + beginExceptionBlock(); + transformAndEmitEmbeddedStatement(node.tryBlock); + if (node.catchClause) { + beginCatchBlock(node.catchClause.variableDeclaration); // TODO: GH#18217 + transformAndEmitEmbeddedStatement(node.catchClause.block); + } + if (node.finallyBlock) { + beginFinallyBlock(); + transformAndEmitEmbeddedStatement(node.finallyBlock); + } + endExceptionBlock(); + } + else { + emitStatement(ts.visitEachChild(node, visitor, context)); + } + } + function containsYield(node) { + return !!node && (node.transformFlags & 262144 /* ContainsYield */) !== 0; + } + function countInitialNodesWithoutYield(nodes) { + var numNodes = nodes.length; + for (var i = 0; i < numNodes; i++) { + if (containsYield(nodes[i])) { + return i; + } + } + return -1; + } + function onSubstituteNode(hint, node) { + node = previousOnSubstituteNode(hint, node); + if (hint === 1 /* Expression */) { + return substituteExpression(node); + } + return node; + } + function substituteExpression(node) { + if (ts.isIdentifier(node)) { + return substituteExpressionIdentifier(node); + } + return node; + } + function substituteExpressionIdentifier(node) { + if (!ts.isGeneratedIdentifier(node) && renamedCatchVariables && renamedCatchVariables.has(ts.idText(node))) { + var original = ts.getOriginalNode(node); + if (ts.isIdentifier(original) && original.parent) { + var declaration = resolver.getReferencedValueDeclaration(original); + if (declaration) { + var name = renamedCatchVariableDeclarations[ts.getOriginalNodeId(declaration)]; + if (name) { + var clone_8 = ts.getMutableClone(name); + ts.setSourceMapRange(clone_8, node); + ts.setCommentRange(clone_8, node); + return clone_8; + } + } + } + } + return node; + } + function cacheExpression(node) { + if (ts.isGeneratedIdentifier(node) || ts.getEmitFlags(node) & 4096 /* HelperName */) { + return node; + } + var temp = ts.createTempVariable(hoistVariableDeclaration); + emitAssignment(temp, node, /*location*/ node); + return temp; + } + function declareLocal(name) { + var temp = name + ? ts.createUniqueName(name) + : ts.createTempVariable(/*recordTempVariable*/ undefined); + hoistVariableDeclaration(temp); + return temp; + } + /** + * Defines a label, uses as the target of a Break operation. + */ + function defineLabel() { + if (!labelOffsets) { + labelOffsets = []; + } + var label = nextLabelId; + nextLabelId++; + labelOffsets[label] = -1; + return label; + } + /** + * Marks the current operation with the specified label. + */ + function markLabel(label) { + ts.Debug.assert(labelOffsets !== undefined, "No labels were defined."); + labelOffsets[label] = operations ? operations.length : 0; + } + /** + * Begins a block operation (With, Break/Continue, Try/Catch/Finally) + * + * @param block Information about the block. + */ + function beginBlock(block) { + if (!blocks) { + blocks = []; + blockActions = []; + blockOffsets = []; + blockStack = []; + } + var index = blockActions.length; + blockActions[index] = 0 /* Open */; + blockOffsets[index] = operations ? operations.length : 0; + blocks[index] = block; + blockStack.push(block); + return index; + } + /** + * Ends the current block operation. + */ + function endBlock() { + var block = peekBlock(); + if (block === undefined) + return ts.Debug.fail("beginBlock was never called."); + var index = blockActions.length; + blockActions[index] = 1 /* Close */; + blockOffsets[index] = operations ? operations.length : 0; + blocks[index] = block; + blockStack.pop(); + return block; + } + /** + * Gets the current open block. + */ + function peekBlock() { + return ts.lastOrUndefined(blockStack); + } + /** + * Gets the kind of the current open block. + */ + function peekBlockKind() { + var block = peekBlock(); + return block && block.kind; + } + /** + * Begins a code block for a generated `with` statement. + * + * @param expression An identifier representing expression for the `with` block. + */ + function beginWithBlock(expression) { + var startLabel = defineLabel(); + var endLabel = defineLabel(); + markLabel(startLabel); + beginBlock({ + kind: 1 /* With */, + expression: expression, + startLabel: startLabel, + endLabel: endLabel + }); + } + /** + * Ends a code block for a generated `with` statement. + */ + function endWithBlock() { + ts.Debug.assert(peekBlockKind() === 1 /* With */); + var block = endBlock(); + markLabel(block.endLabel); + } + /** + * Begins a code block for a generated `try` statement. + */ + function beginExceptionBlock() { + var startLabel = defineLabel(); + var endLabel = defineLabel(); + markLabel(startLabel); + beginBlock({ + kind: 0 /* Exception */, + state: 0 /* Try */, + startLabel: startLabel, + endLabel: endLabel + }); + emitNop(); + return endLabel; + } + /** + * Enters the `catch` clause of a generated `try` statement. + * + * @param variable The catch variable. + */ + function beginCatchBlock(variable) { + ts.Debug.assert(peekBlockKind() === 0 /* Exception */); + // generated identifiers should already be unique within a file + var name; + if (ts.isGeneratedIdentifier(variable.name)) { + name = variable.name; + hoistVariableDeclaration(variable.name); + } + else { + var text = ts.idText(variable.name); + name = declareLocal(text); + if (!renamedCatchVariables) { + renamedCatchVariables = ts.createMap(); + renamedCatchVariableDeclarations = []; + context.enableSubstitution(75 /* Identifier */); + } + renamedCatchVariables.set(text, true); + renamedCatchVariableDeclarations[ts.getOriginalNodeId(variable)] = name; + } + var exception = peekBlock(); + ts.Debug.assert(exception.state < 1 /* Catch */); + var endLabel = exception.endLabel; + emitBreak(endLabel); + var catchLabel = defineLabel(); + markLabel(catchLabel); + exception.state = 1 /* Catch */; + exception.catchVariable = name; + exception.catchLabel = catchLabel; + emitAssignment(name, ts.createCall(ts.createPropertyAccess(state, "sent"), /*typeArguments*/ undefined, [])); + emitNop(); + } + /** + * Enters the `finally` block of a generated `try` statement. + */ + function beginFinallyBlock() { + ts.Debug.assert(peekBlockKind() === 0 /* Exception */); + var exception = peekBlock(); + ts.Debug.assert(exception.state < 2 /* Finally */); + var endLabel = exception.endLabel; + emitBreak(endLabel); + var finallyLabel = defineLabel(); + markLabel(finallyLabel); + exception.state = 2 /* Finally */; + exception.finallyLabel = finallyLabel; + } + /** + * Ends the code block for a generated `try` statement. + */ + function endExceptionBlock() { + ts.Debug.assert(peekBlockKind() === 0 /* Exception */); + var exception = endBlock(); + var state = exception.state; + if (state < 2 /* Finally */) { + emitBreak(exception.endLabel); + } + else { + emitEndfinally(); + } + markLabel(exception.endLabel); + emitNop(); + exception.state = 3 /* Done */; + } + /** + * Begins a code block that supports `break` or `continue` statements that are defined in + * the source tree and not from generated code. + * + * @param labelText Names from containing labeled statements. + */ + function beginScriptLoopBlock() { + beginBlock({ + kind: 3 /* Loop */, + isScript: true, + breakLabel: -1, + continueLabel: -1 + }); + } + /** + * Begins a code block that supports `break` or `continue` statements that are defined in + * generated code. Returns a label used to mark the operation to which to jump when a + * `break` statement targets this block. + * + * @param continueLabel A Label used to mark the operation to which to jump when a + * `continue` statement targets this block. + */ + function beginLoopBlock(continueLabel) { + var breakLabel = defineLabel(); + beginBlock({ + kind: 3 /* Loop */, + isScript: false, + breakLabel: breakLabel, + continueLabel: continueLabel, + }); + return breakLabel; + } + /** + * Ends a code block that supports `break` or `continue` statements that are defined in + * generated code or in the source tree. + */ + function endLoopBlock() { + ts.Debug.assert(peekBlockKind() === 3 /* Loop */); + var block = endBlock(); + var breakLabel = block.breakLabel; + if (!block.isScript) { + markLabel(breakLabel); + } + } + /** + * Begins a code block that supports `break` statements that are defined in the source + * tree and not from generated code. + * + */ + function beginScriptSwitchBlock() { + beginBlock({ + kind: 2 /* Switch */, + isScript: true, + breakLabel: -1 + }); + } + /** + * Begins a code block that supports `break` statements that are defined in generated code. + * Returns a label used to mark the operation to which to jump when a `break` statement + * targets this block. + */ + function beginSwitchBlock() { + var breakLabel = defineLabel(); + beginBlock({ + kind: 2 /* Switch */, + isScript: false, + breakLabel: breakLabel, + }); + return breakLabel; + } + /** + * Ends a code block that supports `break` statements that are defined in generated code. + */ + function endSwitchBlock() { + ts.Debug.assert(peekBlockKind() === 2 /* Switch */); + var block = endBlock(); + var breakLabel = block.breakLabel; + if (!block.isScript) { + markLabel(breakLabel); + } + } + function beginScriptLabeledBlock(labelText) { + beginBlock({ + kind: 4 /* Labeled */, + isScript: true, + labelText: labelText, + breakLabel: -1 + }); + } + function beginLabeledBlock(labelText) { + var breakLabel = defineLabel(); + beginBlock({ + kind: 4 /* Labeled */, + isScript: false, + labelText: labelText, + breakLabel: breakLabel + }); + } + function endLabeledBlock() { + ts.Debug.assert(peekBlockKind() === 4 /* Labeled */); + var block = endBlock(); + if (!block.isScript) { + markLabel(block.breakLabel); + } + } + /** + * Indicates whether the provided block supports `break` statements. + * + * @param block A code block. + */ + function supportsUnlabeledBreak(block) { + return block.kind === 2 /* Switch */ + || block.kind === 3 /* Loop */; + } + /** + * Indicates whether the provided block supports `break` statements with labels. + * + * @param block A code block. + */ + function supportsLabeledBreakOrContinue(block) { + return block.kind === 4 /* Labeled */; + } + /** + * Indicates whether the provided block supports `continue` statements. + * + * @param block A code block. + */ + function supportsUnlabeledContinue(block) { + return block.kind === 3 /* Loop */; + } + function hasImmediateContainingLabeledBlock(labelText, start) { + for (var j = start; j >= 0; j--) { + var containingBlock = blockStack[j]; + if (supportsLabeledBreakOrContinue(containingBlock)) { + if (containingBlock.labelText === labelText) { + return true; + } + } + else { + break; + } + } + return false; + } + /** + * Finds the label that is the target for a `break` statement. + * + * @param labelText An optional name of a containing labeled statement. + */ + function findBreakTarget(labelText) { + if (blockStack) { + if (labelText) { + for (var i = blockStack.length - 1; i >= 0; i--) { + var block = blockStack[i]; + if (supportsLabeledBreakOrContinue(block) && block.labelText === labelText) { + return block.breakLabel; + } + else if (supportsUnlabeledBreak(block) && hasImmediateContainingLabeledBlock(labelText, i - 1)) { + return block.breakLabel; + } + } + } + else { + for (var i = blockStack.length - 1; i >= 0; i--) { + var block = blockStack[i]; + if (supportsUnlabeledBreak(block)) { + return block.breakLabel; + } + } + } + } + return 0; + } + /** + * Finds the label that is the target for a `continue` statement. + * + * @param labelText An optional name of a containing labeled statement. + */ + function findContinueTarget(labelText) { + if (blockStack) { + if (labelText) { + for (var i = blockStack.length - 1; i >= 0; i--) { + var block = blockStack[i]; + if (supportsUnlabeledContinue(block) && hasImmediateContainingLabeledBlock(labelText, i - 1)) { + return block.continueLabel; + } + } + } + else { + for (var i = blockStack.length - 1; i >= 0; i--) { + var block = blockStack[i]; + if (supportsUnlabeledContinue(block)) { + return block.continueLabel; + } + } + } + } + return 0; + } + /** + * Creates an expression that can be used to indicate the value for a label. + * + * @param label A label. + */ + function createLabel(label) { + if (label !== undefined && label > 0) { + if (labelExpressions === undefined) { + labelExpressions = []; + } + var expression = ts.createLiteral(-1); + if (labelExpressions[label] === undefined) { + labelExpressions[label] = [expression]; + } + else { + labelExpressions[label].push(expression); + } + return expression; + } + return ts.createOmittedExpression(); + } + /** + * Creates a numeric literal for the provided instruction. + */ + function createInstruction(instruction) { + var literal = ts.createLiteral(instruction); + ts.addSyntheticTrailingComment(literal, 3 /* MultiLineCommentTrivia */, getInstructionName(instruction)); + return literal; + } + /** + * Creates a statement that can be used indicate a Break operation to the provided label. + * + * @param label A label. + * @param location An optional source map location for the statement. + */ + function createInlineBreak(label, location) { + ts.Debug.assertLessThan(0, label, "Invalid label"); + return ts.setTextRange(ts.createReturn(ts.createArrayLiteral([ + createInstruction(3 /* Break */), + createLabel(label) + ])), location); + } + /** + * Creates a statement that can be used indicate a Return operation. + * + * @param expression The expression for the return statement. + * @param location An optional source map location for the statement. + */ + function createInlineReturn(expression, location) { + return ts.setTextRange(ts.createReturn(ts.createArrayLiteral(expression + ? [createInstruction(2 /* Return */), expression] + : [createInstruction(2 /* Return */)])), location); + } + /** + * Creates an expression that can be used to resume from a Yield operation. + */ + function createGeneratorResume(location) { + return ts.setTextRange(ts.createCall(ts.createPropertyAccess(state, "sent"), + /*typeArguments*/ undefined, []), location); + } + /** + * Emits an empty instruction. + */ + function emitNop() { + emitWorker(0 /* Nop */); + } + /** + * Emits a Statement. + * + * @param node A statement. + */ + function emitStatement(node) { + if (node) { + emitWorker(1 /* Statement */, [node]); + } + else { + emitNop(); + } + } + /** + * Emits an Assignment operation. + * + * @param left The left-hand side of the assignment. + * @param right The right-hand side of the assignment. + * @param location An optional source map location for the assignment. + */ + function emitAssignment(left, right, location) { + emitWorker(2 /* Assign */, [left, right], location); + } + /** + * Emits a Break operation to the specified label. + * + * @param label A label. + * @param location An optional source map location for the assignment. + */ + function emitBreak(label, location) { + emitWorker(3 /* Break */, [label], location); + } + /** + * Emits a Break operation to the specified label when a condition evaluates to a truthy + * value at runtime. + * + * @param label A label. + * @param condition The condition. + * @param location An optional source map location for the assignment. + */ + function emitBreakWhenTrue(label, condition, location) { + emitWorker(4 /* BreakWhenTrue */, [label, condition], location); + } + /** + * Emits a Break to the specified label when a condition evaluates to a falsey value at + * runtime. + * + * @param label A label. + * @param condition The condition. + * @param location An optional source map location for the assignment. + */ + function emitBreakWhenFalse(label, condition, location) { + emitWorker(5 /* BreakWhenFalse */, [label, condition], location); + } + /** + * Emits a YieldStar operation for the provided expression. + * + * @param expression An optional value for the yield operation. + * @param location An optional source map location for the assignment. + */ + function emitYieldStar(expression, location) { + emitWorker(7 /* YieldStar */, [expression], location); + } + /** + * Emits a Yield operation for the provided expression. + * + * @param expression An optional value for the yield operation. + * @param location An optional source map location for the assignment. + */ + function emitYield(expression, location) { + emitWorker(6 /* Yield */, [expression], location); + } + /** + * Emits a Return operation for the provided expression. + * + * @param expression An optional value for the operation. + * @param location An optional source map location for the assignment. + */ + function emitReturn(expression, location) { + emitWorker(8 /* Return */, [expression], location); + } + /** + * Emits a Throw operation for the provided expression. + * + * @param expression A value for the operation. + * @param location An optional source map location for the assignment. + */ + function emitThrow(expression, location) { + emitWorker(9 /* Throw */, [expression], location); + } + /** + * Emits an Endfinally operation. This is used to handle `finally` block semantics. + */ + function emitEndfinally() { + emitWorker(10 /* Endfinally */); + } + /** + * Emits an operation. + * + * @param code The OpCode for the operation. + * @param args The optional arguments for the operation. + */ + function emitWorker(code, args, location) { + if (operations === undefined) { + operations = []; + operationArguments = []; + operationLocations = []; + } + if (labelOffsets === undefined) { + // mark entry point + markLabel(defineLabel()); + } + var operationIndex = operations.length; + operations[operationIndex] = code; + operationArguments[operationIndex] = args; + operationLocations[operationIndex] = location; + } + /** + * Builds the generator function body. + */ + function build() { + blockIndex = 0; + labelNumber = 0; + labelNumbers = undefined; + lastOperationWasAbrupt = false; + lastOperationWasCompletion = false; + clauses = undefined; + statements = undefined; + exceptionBlockStack = undefined; + currentExceptionBlock = undefined; + withBlockStack = undefined; + var buildResult = buildStatements(); + return createGeneratorHelper(context, ts.setEmitFlags(ts.createFunctionExpression( + /*modifiers*/ undefined, + /*asteriskToken*/ undefined, + /*name*/ undefined, + /*typeParameters*/ undefined, [ts.createParameter(/*decorators*/ undefined, /*modifiers*/ undefined, /*dotDotDotToken*/ undefined, state)], + /*type*/ undefined, ts.createBlock(buildResult, + /*multiLine*/ buildResult.length > 0)), 524288 /* ReuseTempVariableScope */)); + } + /** + * Builds the statements for the generator function body. + */ + function buildStatements() { + if (operations) { + for (var operationIndex = 0; operationIndex < operations.length; operationIndex++) { + writeOperation(operationIndex); + } + flushFinalLabel(operations.length); + } + else { + flushFinalLabel(0); + } + if (clauses) { + var labelExpression = ts.createPropertyAccess(state, "label"); + var switchStatement = ts.createSwitch(labelExpression, ts.createCaseBlock(clauses)); + return [ts.startOnNewLine(switchStatement)]; + } + if (statements) { + return statements; + } + return []; + } + /** + * Flush the current label and advance to a new label. + */ + function flushLabel() { + if (!statements) { + return; + } + appendLabel(/*markLabelEnd*/ !lastOperationWasAbrupt); + lastOperationWasAbrupt = false; + lastOperationWasCompletion = false; + labelNumber++; + } + /** + * Flush the final label of the generator function body. + */ + function flushFinalLabel(operationIndex) { + if (isFinalLabelReachable(operationIndex)) { + tryEnterLabel(operationIndex); + withBlockStack = undefined; + writeReturn(/*expression*/ undefined, /*operationLocation*/ undefined); + } + if (statements && clauses) { + appendLabel(/*markLabelEnd*/ false); + } + updateLabelExpressions(); + } + /** + * Tests whether the final label of the generator function body + * is reachable by user code. + */ + function isFinalLabelReachable(operationIndex) { + // if the last operation was *not* a completion (return/throw) then + // the final label is reachable. + if (!lastOperationWasCompletion) { + return true; + } + // if there are no labels defined or referenced, then the final label is + // not reachable. + if (!labelOffsets || !labelExpressions) { + return false; + } + // if the label for this offset is referenced, then the final label + // is reachable. + for (var label = 0; label < labelOffsets.length; label++) { + if (labelOffsets[label] === operationIndex && labelExpressions[label]) { + return true; + } + } + return false; + } + /** + * Appends a case clause for the last label and sets the new label. + * + * @param markLabelEnd Indicates that the transition between labels was a fall-through + * from a previous case clause and the change in labels should be + * reflected on the `state` object. + */ + function appendLabel(markLabelEnd) { + if (!clauses) { + clauses = []; + } + if (statements) { + if (withBlockStack) { + // The previous label was nested inside one or more `with` blocks, so we + // surround the statements in generated `with` blocks to create the same environment. + for (var i = withBlockStack.length - 1; i >= 0; i--) { + var withBlock = withBlockStack[i]; + statements = [ts.createWith(withBlock.expression, ts.createBlock(statements))]; + } + } + if (currentExceptionBlock) { + // The previous label was nested inside of an exception block, so we must + // indicate entry into a protected region by pushing the label numbers + // for each block in the protected region. + var startLabel = currentExceptionBlock.startLabel, catchLabel = currentExceptionBlock.catchLabel, finallyLabel = currentExceptionBlock.finallyLabel, endLabel = currentExceptionBlock.endLabel; + statements.unshift(ts.createExpressionStatement(ts.createCall(ts.createPropertyAccess(ts.createPropertyAccess(state, "trys"), "push"), + /*typeArguments*/ undefined, [ + ts.createArrayLiteral([ + createLabel(startLabel), + createLabel(catchLabel), + createLabel(finallyLabel), + createLabel(endLabel) + ]) + ]))); + currentExceptionBlock = undefined; + } + if (markLabelEnd) { + // The case clause for the last label falls through to this label, so we + // add an assignment statement to reflect the change in labels. + statements.push(ts.createExpressionStatement(ts.createAssignment(ts.createPropertyAccess(state, "label"), ts.createLiteral(labelNumber + 1)))); + } + } + clauses.push(ts.createCaseClause(ts.createLiteral(labelNumber), statements || [])); + statements = undefined; + } + /** + * Tries to enter into a new label at the current operation index. + */ + function tryEnterLabel(operationIndex) { + if (!labelOffsets) { + return; + } + for (var label = 0; label < labelOffsets.length; label++) { + if (labelOffsets[label] === operationIndex) { + flushLabel(); + if (labelNumbers === undefined) { + labelNumbers = []; + } + if (labelNumbers[labelNumber] === undefined) { + labelNumbers[labelNumber] = [label]; + } + else { + labelNumbers[labelNumber].push(label); + } + } + } + } + /** + * Updates literal expressions for labels with actual label numbers. + */ + function updateLabelExpressions() { + if (labelExpressions !== undefined && labelNumbers !== undefined) { + for (var labelNumber_1 = 0; labelNumber_1 < labelNumbers.length; labelNumber_1++) { + var labels = labelNumbers[labelNumber_1]; + if (labels !== undefined) { + for (var _i = 0, labels_1 = labels; _i < labels_1.length; _i++) { + var label = labels_1[_i]; + var expressions = labelExpressions[label]; + if (expressions !== undefined) { + for (var _a = 0, expressions_1 = expressions; _a < expressions_1.length; _a++) { + var expression = expressions_1[_a]; + expression.text = String(labelNumber_1); + } + } + } + } + } + } + } + /** + * Tries to enter or leave a code block. + */ + function tryEnterOrLeaveBlock(operationIndex) { + if (blocks) { + for (; blockIndex < blockActions.length && blockOffsets[blockIndex] <= operationIndex; blockIndex++) { + var block = blocks[blockIndex]; + var blockAction = blockActions[blockIndex]; + switch (block.kind) { + case 0 /* Exception */: + if (blockAction === 0 /* Open */) { + if (!exceptionBlockStack) { + exceptionBlockStack = []; + } + if (!statements) { + statements = []; + } + exceptionBlockStack.push(currentExceptionBlock); + currentExceptionBlock = block; + } + else if (blockAction === 1 /* Close */) { + currentExceptionBlock = exceptionBlockStack.pop(); + } + break; + case 1 /* With */: + if (blockAction === 0 /* Open */) { + if (!withBlockStack) { + withBlockStack = []; + } + withBlockStack.push(block); + } + else if (blockAction === 1 /* Close */) { + withBlockStack.pop(); + } + break; + // default: do nothing + } + } + } + } + /** + * Writes an operation as a statement to the current label's statement list. + * + * @param operation The OpCode of the operation + */ + function writeOperation(operationIndex) { + tryEnterLabel(operationIndex); + tryEnterOrLeaveBlock(operationIndex); + // early termination, nothing else to process in this label + if (lastOperationWasAbrupt) { + return; + } + lastOperationWasAbrupt = false; + lastOperationWasCompletion = false; + var opcode = operations[operationIndex]; + if (opcode === 0 /* Nop */) { + return; + } + else if (opcode === 10 /* Endfinally */) { + return writeEndfinally(); + } + var args = operationArguments[operationIndex]; + if (opcode === 1 /* Statement */) { + return writeStatement(args[0]); + } + var location = operationLocations[operationIndex]; + switch (opcode) { + case 2 /* Assign */: + return writeAssign(args[0], args[1], location); + case 3 /* Break */: + return writeBreak(args[0], location); + case 4 /* BreakWhenTrue */: + return writeBreakWhenTrue(args[0], args[1], location); + case 5 /* BreakWhenFalse */: + return writeBreakWhenFalse(args[0], args[1], location); + case 6 /* Yield */: + return writeYield(args[0], location); + case 7 /* YieldStar */: + return writeYieldStar(args[0], location); + case 8 /* Return */: + return writeReturn(args[0], location); + case 9 /* Throw */: + return writeThrow(args[0], location); + } + } + /** + * Writes a statement to the current label's statement list. + * + * @param statement A statement to write. + */ + function writeStatement(statement) { + if (statement) { + if (!statements) { + statements = [statement]; + } + else { + statements.push(statement); + } + } + } + /** + * Writes an Assign operation to the current label's statement list. + * + * @param left The left-hand side of the assignment. + * @param right The right-hand side of the assignment. + * @param operationLocation The source map location for the operation. + */ + function writeAssign(left, right, operationLocation) { + writeStatement(ts.setTextRange(ts.createExpressionStatement(ts.createAssignment(left, right)), operationLocation)); + } + /** + * Writes a Throw operation to the current label's statement list. + * + * @param expression The value to throw. + * @param operationLocation The source map location for the operation. + */ + function writeThrow(expression, operationLocation) { + lastOperationWasAbrupt = true; + lastOperationWasCompletion = true; + writeStatement(ts.setTextRange(ts.createThrow(expression), operationLocation)); + } + /** + * Writes a Return operation to the current label's statement list. + * + * @param expression The value to return. + * @param operationLocation The source map location for the operation. + */ + function writeReturn(expression, operationLocation) { + lastOperationWasAbrupt = true; + lastOperationWasCompletion = true; + writeStatement(ts.setEmitFlags(ts.setTextRange(ts.createReturn(ts.createArrayLiteral(expression + ? [createInstruction(2 /* Return */), expression] + : [createInstruction(2 /* Return */)])), operationLocation), 384 /* NoTokenSourceMaps */)); + } + /** + * Writes a Break operation to the current label's statement list. + * + * @param label The label for the Break. + * @param operationLocation The source map location for the operation. + */ + function writeBreak(label, operationLocation) { + lastOperationWasAbrupt = true; + writeStatement(ts.setEmitFlags(ts.setTextRange(ts.createReturn(ts.createArrayLiteral([ + createInstruction(3 /* Break */), + createLabel(label) + ])), operationLocation), 384 /* NoTokenSourceMaps */)); + } + /** + * Writes a BreakWhenTrue operation to the current label's statement list. + * + * @param label The label for the Break. + * @param condition The condition for the Break. + * @param operationLocation The source map location for the operation. + */ + function writeBreakWhenTrue(label, condition, operationLocation) { + writeStatement(ts.setEmitFlags(ts.createIf(condition, ts.setEmitFlags(ts.setTextRange(ts.createReturn(ts.createArrayLiteral([ + createInstruction(3 /* Break */), + createLabel(label) + ])), operationLocation), 384 /* NoTokenSourceMaps */)), 1 /* SingleLine */)); + } + /** + * Writes a BreakWhenFalse operation to the current label's statement list. + * + * @param label The label for the Break. + * @param condition The condition for the Break. + * @param operationLocation The source map location for the operation. + */ + function writeBreakWhenFalse(label, condition, operationLocation) { + writeStatement(ts.setEmitFlags(ts.createIf(ts.createLogicalNot(condition), ts.setEmitFlags(ts.setTextRange(ts.createReturn(ts.createArrayLiteral([ + createInstruction(3 /* Break */), + createLabel(label) + ])), operationLocation), 384 /* NoTokenSourceMaps */)), 1 /* SingleLine */)); + } + /** + * Writes a Yield operation to the current label's statement list. + * + * @param expression The expression to yield. + * @param operationLocation The source map location for the operation. + */ + function writeYield(expression, operationLocation) { + lastOperationWasAbrupt = true; + writeStatement(ts.setEmitFlags(ts.setTextRange(ts.createReturn(ts.createArrayLiteral(expression + ? [createInstruction(4 /* Yield */), expression] + : [createInstruction(4 /* Yield */)])), operationLocation), 384 /* NoTokenSourceMaps */)); + } + /** + * Writes a YieldStar instruction to the current label's statement list. + * + * @param expression The expression to yield. + * @param operationLocation The source map location for the operation. + */ + function writeYieldStar(expression, operationLocation) { + lastOperationWasAbrupt = true; + writeStatement(ts.setEmitFlags(ts.setTextRange(ts.createReturn(ts.createArrayLiteral([ + createInstruction(5 /* YieldStar */), + expression + ])), operationLocation), 384 /* NoTokenSourceMaps */)); + } + /** + * Writes an Endfinally instruction to the current label's statement list. + */ + function writeEndfinally() { + lastOperationWasAbrupt = true; + writeStatement(ts.createReturn(ts.createArrayLiteral([ + createInstruction(7 /* Endfinally */) + ]))); + } + } + ts.transformGenerators = transformGenerators; + function createGeneratorHelper(context, body) { + context.requestEmitHelper(ts.generatorHelper); + return ts.createCall(ts.getUnscopedHelperName("__generator"), + /*typeArguments*/ undefined, [ts.createThis(), body]); + } + // The __generator helper is used by down-level transformations to emulate the runtime + // semantics of an ES2015 generator function. When called, this helper returns an + // object that implements the Iterator protocol, in that it has `next`, `return`, and + // `throw` methods that step through the generator when invoked. + // + // parameters: + // @param thisArg The value to use as the `this` binding for the transformed generator body. + // @param body A function that acts as the transformed generator body. + // + // variables: + // _ Persistent state for the generator that is shared between the helper and the + // generator body. The state object has the following members: + // sent() - A method that returns or throws the current completion value. + // label - The next point at which to resume evaluation of the generator body. + // trys - A stack of protected regions (try/catch/finally blocks). + // ops - A stack of pending instructions when inside of a finally block. + // f A value indicating whether the generator is executing. + // y An iterator to delegate for a yield*. + // t A temporary variable that holds one of the following values (note that these + // cases do not overlap): + // - The completion value when resuming from a `yield` or `yield*`. + // - The error value for a catch block. + // - The current protected region (array of try/catch/finally/end labels). + // - The verb (`next`, `throw`, or `return` method) to delegate to the expression + // of a `yield*`. + // - The result of evaluating the verb delegated to the expression of a `yield*`. + // + // functions: + // verb(n) Creates a bound callback to the `step` function for opcode `n`. + // step(op) Evaluates opcodes in a generator body until execution is suspended or + // completed. + // + // The __generator helper understands a limited set of instructions: + // 0: next(value?) - Start or resume the generator with the specified value. + // 1: throw(error) - Resume the generator with an exception. If the generator is + // suspended inside of one or more protected regions, evaluates + // any intervening finally blocks between the current label and + // the nearest catch block or function boundary. If uncaught, the + // exception is thrown to the caller. + // 2: return(value?) - Resume the generator as if with a return. If the generator is + // suspended inside of one or more protected regions, evaluates any + // intervening finally blocks. + // 3: break(label) - Jump to the specified label. If the label is outside of the + // current protected region, evaluates any intervening finally + // blocks. + // 4: yield(value?) - Yield execution to the caller with an optional value. When + // resumed, the generator will continue at the next label. + // 5: yield*(value) - Delegates evaluation to the supplied iterator. When + // delegation completes, the generator will continue at the next + // label. + // 6: catch(error) - Handles an exception thrown from within the generator body. If + // the current label is inside of one or more protected regions, + // evaluates any intervening finally blocks between the current + // label and the nearest catch block or function boundary. If + // uncaught, the exception is thrown to the caller. + // 7: endfinally - Ends a finally block, resuming the last instruction prior to + // entering a finally block. + // + // For examples of how these are used, see the comments in ./transformers/generators.ts + ts.generatorHelper = { + name: "typescript:generator", + importName: "__generator", + scoped: false, + priority: 6, + text: "\n var __generator = (this && this.__generator) || function (thisArg, body) {\n var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;\n return g = { next: verb(0), \"throw\": verb(1), \"return\": verb(2) }, typeof Symbol === \"function\" && (g[Symbol.iterator] = function() { return this; }), g;\n function verb(n) { return function (v) { return step([n, v]); }; }\n function step(op) {\n if (f) throw new TypeError(\"Generator is already executing.\");\n while (_) try {\n if (f = 1, y && (t = op[0] & 2 ? y[\"return\"] : op[0] ? y[\"throw\"] || ((t = y[\"return\"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;\n if (y = 0, t) op = [op[0] & 2, t.value];\n switch (op[0]) {\n case 0: case 1: t = op; break;\n case 4: _.label++; return { value: op[1], done: false };\n case 5: _.label++; y = op[1]; op = [0]; continue;\n case 7: op = _.ops.pop(); _.trys.pop(); continue;\n default:\n if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }\n if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }\n if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }\n if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }\n if (t[2]) _.ops.pop();\n _.trys.pop(); continue;\n }\n op = body.call(thisArg, _);\n } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }\n if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };\n }\n };" + }; +})(ts || (ts = {})); +/*@internal*/ +var ts; +(function (ts) { + function transformModule(context) { + function getTransformModuleDelegate(moduleKind) { + switch (moduleKind) { + case ts.ModuleKind.AMD: return transformAMDModule; + case ts.ModuleKind.UMD: return transformUMDModule; + default: return transformCommonJSModule; + } + } + var startLexicalEnvironment = context.startLexicalEnvironment, endLexicalEnvironment = context.endLexicalEnvironment, hoistVariableDeclaration = context.hoistVariableDeclaration; + var compilerOptions = context.getCompilerOptions(); + var resolver = context.getEmitResolver(); + var host = context.getEmitHost(); + var languageVersion = ts.getEmitScriptTarget(compilerOptions); + var moduleKind = ts.getEmitModuleKind(compilerOptions); + var previousOnSubstituteNode = context.onSubstituteNode; + var previousOnEmitNode = context.onEmitNode; + context.onSubstituteNode = onSubstituteNode; + context.onEmitNode = onEmitNode; + context.enableSubstitution(75 /* Identifier */); // Substitutes expression identifiers with imported/exported symbols. + context.enableSubstitution(209 /* BinaryExpression */); // Substitutes assignments to exported symbols. + context.enableSubstitution(207 /* PrefixUnaryExpression */); // Substitutes updates to exported symbols. + context.enableSubstitution(208 /* PostfixUnaryExpression */); // Substitutes updates to exported symbols. + context.enableSubstitution(282 /* ShorthandPropertyAssignment */); // Substitutes shorthand property assignments for imported/exported symbols. + context.enableEmitNotification(290 /* SourceFile */); // Restore state when substituting nodes in a file. + var moduleInfoMap = []; // The ExternalModuleInfo for each file. + var deferredExports = []; // Exports to defer until an EndOfDeclarationMarker is found. + var currentSourceFile; // The current file. + var currentModuleInfo; // The ExternalModuleInfo for the current file. + var noSubstitution; // Set of nodes for which substitution rules should be ignored. + var needUMDDynamicImportHelper; + return ts.chainBundle(transformSourceFile); + /** + * Transforms the module aspects of a SourceFile. + * + * @param node The SourceFile node. + */ + function transformSourceFile(node) { + if (node.isDeclarationFile || + !(ts.isEffectiveExternalModule(node, compilerOptions) || + node.transformFlags & 2097152 /* ContainsDynamicImport */ || + (ts.isJsonSourceFile(node) && ts.hasJsonModuleEmitEnabled(compilerOptions) && (compilerOptions.out || compilerOptions.outFile)))) { + return node; + } + currentSourceFile = node; + currentModuleInfo = ts.collectExternalModuleInfo(node, resolver, compilerOptions); + moduleInfoMap[ts.getOriginalNodeId(node)] = currentModuleInfo; + // Perform the transformation. + var transformModule = getTransformModuleDelegate(moduleKind); + var updated = transformModule(node); + currentSourceFile = undefined; + currentModuleInfo = undefined; + needUMDDynamicImportHelper = false; + return ts.aggregateTransformFlags(updated); + } + function shouldEmitUnderscoreUnderscoreESModule() { + if (!currentModuleInfo.exportEquals && ts.isExternalModule(currentSourceFile)) { + return true; + } + return false; + } + /** + * Transforms a SourceFile into a CommonJS module. + * + * @param node The SourceFile node. + */ + function transformCommonJSModule(node) { + startLexicalEnvironment(); + var statements = []; + var ensureUseStrict = ts.getStrictOptionValue(compilerOptions, "alwaysStrict") || (!compilerOptions.noImplicitUseStrict && ts.isExternalModule(currentSourceFile)); + var statementOffset = ts.addPrologue(statements, node.statements, ensureUseStrict && !ts.isJsonSourceFile(node), sourceElementVisitor); + if (shouldEmitUnderscoreUnderscoreESModule()) { + ts.append(statements, createUnderscoreUnderscoreESModule()); + } + if (ts.length(currentModuleInfo.exportedNames)) { + ts.append(statements, ts.createExpressionStatement(ts.reduceLeft(currentModuleInfo.exportedNames, function (prev, nextId) { return ts.createAssignment(ts.createPropertyAccess(ts.createIdentifier("exports"), ts.createIdentifier(ts.idText(nextId))), prev); }, ts.createVoidZero()))); + } + ts.append(statements, ts.visitNode(currentModuleInfo.externalHelpersImportDeclaration, sourceElementVisitor, ts.isStatement)); + ts.addRange(statements, ts.visitNodes(node.statements, sourceElementVisitor, ts.isStatement, statementOffset)); + addExportEqualsIfNeeded(statements, /*emitAsReturn*/ false); + ts.insertStatementsAfterStandardPrologue(statements, endLexicalEnvironment()); + var updated = ts.updateSourceFileNode(node, ts.setTextRange(ts.createNodeArray(statements), node.statements)); + ts.addEmitHelpers(updated, context.readEmitHelpers()); + return updated; + } + /** + * Transforms a SourceFile into an AMD module. + * + * @param node The SourceFile node. + */ + function transformAMDModule(node) { + var define = ts.createIdentifier("define"); + var moduleName = ts.tryGetModuleNameFromFile(node, host, compilerOptions); + var jsonSourceFile = ts.isJsonSourceFile(node) && node; + // An AMD define function has the following shape: + // + // define(id?, dependencies?, factory); + // + // This has the shape of the following: + // + // define(name, ["module1", "module2"], function (module1Alias) { ... } + // + // The location of the alias in the parameter list in the factory function needs to + // match the position of the module name in the dependency list. + // + // To ensure this is true in cases of modules with no aliases, e.g.: + // + // import "module" + // + // or + // + // /// + // + // we need to add modules without alias names to the end of the dependencies list + var _a = collectAsynchronousDependencies(node, /*includeNonAmdDependencies*/ true), aliasedModuleNames = _a.aliasedModuleNames, unaliasedModuleNames = _a.unaliasedModuleNames, importAliasNames = _a.importAliasNames; + // Create an updated SourceFile: + // + // define(moduleName?, ["module1", "module2"], function ... + var updated = ts.updateSourceFileNode(node, ts.setTextRange(ts.createNodeArray([ + ts.createExpressionStatement(ts.createCall(define, + /*typeArguments*/ undefined, __spreadArrays((moduleName ? [moduleName] : []), [ + // Add the dependency array argument: + // + // ["require", "exports", module1", "module2", ...] + ts.createArrayLiteral(jsonSourceFile ? ts.emptyArray : __spreadArrays([ + ts.createLiteral("require"), + ts.createLiteral("exports") + ], aliasedModuleNames, unaliasedModuleNames)), + // Add the module body function argument: + // + // function (require, exports, module1, module2) ... + jsonSourceFile ? + jsonSourceFile.statements.length ? jsonSourceFile.statements[0].expression : ts.createObjectLiteral() : + ts.createFunctionExpression( + /*modifiers*/ undefined, + /*asteriskToken*/ undefined, + /*name*/ undefined, + /*typeParameters*/ undefined, __spreadArrays([ + ts.createParameter(/*decorators*/ undefined, /*modifiers*/ undefined, /*dotDotDotToken*/ undefined, "require"), + ts.createParameter(/*decorators*/ undefined, /*modifiers*/ undefined, /*dotDotDotToken*/ undefined, "exports") + ], importAliasNames), + /*type*/ undefined, transformAsynchronousModuleBody(node)) + ]))) + ]), + /*location*/ node.statements)); + ts.addEmitHelpers(updated, context.readEmitHelpers()); + return updated; + } + /** + * Transforms a SourceFile into a UMD module. + * + * @param node The SourceFile node. + */ + function transformUMDModule(node) { + var _a = collectAsynchronousDependencies(node, /*includeNonAmdDependencies*/ false), aliasedModuleNames = _a.aliasedModuleNames, unaliasedModuleNames = _a.unaliasedModuleNames, importAliasNames = _a.importAliasNames; + var moduleName = ts.tryGetModuleNameFromFile(node, host, compilerOptions); + var umdHeader = ts.createFunctionExpression( + /*modifiers*/ undefined, + /*asteriskToken*/ undefined, + /*name*/ undefined, + /*typeParameters*/ undefined, [ts.createParameter(/*decorators*/ undefined, /*modifiers*/ undefined, /*dotDotDotToken*/ undefined, "factory")], + /*type*/ undefined, ts.setTextRange(ts.createBlock([ + ts.createIf(ts.createLogicalAnd(ts.createTypeCheck(ts.createIdentifier("module"), "object"), ts.createTypeCheck(ts.createPropertyAccess(ts.createIdentifier("module"), "exports"), "object")), ts.createBlock([ + ts.createVariableStatement( + /*modifiers*/ undefined, [ + ts.createVariableDeclaration("v", + /*type*/ undefined, ts.createCall(ts.createIdentifier("factory"), + /*typeArguments*/ undefined, [ + ts.createIdentifier("require"), + ts.createIdentifier("exports") + ])) + ]), + ts.setEmitFlags(ts.createIf(ts.createStrictInequality(ts.createIdentifier("v"), ts.createIdentifier("undefined")), ts.createExpressionStatement(ts.createAssignment(ts.createPropertyAccess(ts.createIdentifier("module"), "exports"), ts.createIdentifier("v")))), 1 /* SingleLine */) + ]), ts.createIf(ts.createLogicalAnd(ts.createTypeCheck(ts.createIdentifier("define"), "function"), ts.createPropertyAccess(ts.createIdentifier("define"), "amd")), ts.createBlock([ + ts.createExpressionStatement(ts.createCall(ts.createIdentifier("define"), + /*typeArguments*/ undefined, __spreadArrays((moduleName ? [moduleName] : []), [ + ts.createArrayLiteral(__spreadArrays([ + ts.createLiteral("require"), + ts.createLiteral("exports") + ], aliasedModuleNames, unaliasedModuleNames)), + ts.createIdentifier("factory") + ]))) + ]))) + ], + /*multiLine*/ true), + /*location*/ undefined)); + // Create an updated SourceFile: + // + // (function (factory) { + // if (typeof module === "object" && typeof module.exports === "object") { + // var v = factory(require, exports); + // if (v !== undefined) module.exports = v; + // } + // else if (typeof define === 'function' && define.amd) { + // define(["require", "exports"], factory); + // } + // })(function ...) + var updated = ts.updateSourceFileNode(node, ts.setTextRange(ts.createNodeArray([ + ts.createExpressionStatement(ts.createCall(umdHeader, + /*typeArguments*/ undefined, [ + // Add the module body function argument: + // + // function (require, exports) ... + ts.createFunctionExpression( + /*modifiers*/ undefined, + /*asteriskToken*/ undefined, + /*name*/ undefined, + /*typeParameters*/ undefined, __spreadArrays([ + ts.createParameter(/*decorators*/ undefined, /*modifiers*/ undefined, /*dotDotDotToken*/ undefined, "require"), + ts.createParameter(/*decorators*/ undefined, /*modifiers*/ undefined, /*dotDotDotToken*/ undefined, "exports") + ], importAliasNames), + /*type*/ undefined, transformAsynchronousModuleBody(node)) + ])) + ]), + /*location*/ node.statements)); + ts.addEmitHelpers(updated, context.readEmitHelpers()); + return updated; + } + /** + * Collect the additional asynchronous dependencies for the module. + * + * @param node The source file. + * @param includeNonAmdDependencies A value indicating whether to include non-AMD dependencies. + */ + function collectAsynchronousDependencies(node, includeNonAmdDependencies) { + // names of modules with corresponding parameter in the factory function + var aliasedModuleNames = []; + // names of modules with no corresponding parameters in factory function + var unaliasedModuleNames = []; + // names of the parameters in the factory function; these + // parameters need to match the indexes of the corresponding + // module names in aliasedModuleNames. + var importAliasNames = []; + // Fill in amd-dependency tags + for (var _i = 0, _a = node.amdDependencies; _i < _a.length; _i++) { + var amdDependency = _a[_i]; + if (amdDependency.name) { + aliasedModuleNames.push(ts.createLiteral(amdDependency.path)); + importAliasNames.push(ts.createParameter(/*decorators*/ undefined, /*modifiers*/ undefined, /*dotDotDotToken*/ undefined, amdDependency.name)); + } + else { + unaliasedModuleNames.push(ts.createLiteral(amdDependency.path)); + } + } + for (var _b = 0, _c = currentModuleInfo.externalImports; _b < _c.length; _b++) { + var importNode = _c[_b]; + // Find the name of the external module + var externalModuleName = ts.getExternalModuleNameLiteral(importNode, currentSourceFile, host, resolver, compilerOptions); + // Find the name of the module alias, if there is one + var importAliasName = ts.getLocalNameForExternalImport(importNode, currentSourceFile); + // It is possible that externalModuleName is undefined if it is not string literal. + // This can happen in the invalid import syntax. + // E.g : "import * from alias from 'someLib';" + if (externalModuleName) { + if (includeNonAmdDependencies && importAliasName) { + // Set emitFlags on the name of the classDeclaration + // This is so that when printer will not substitute the identifier + ts.setEmitFlags(importAliasName, 4 /* NoSubstitution */); + aliasedModuleNames.push(externalModuleName); + importAliasNames.push(ts.createParameter(/*decorators*/ undefined, /*modifiers*/ undefined, /*dotDotDotToken*/ undefined, importAliasName)); + } + else { + unaliasedModuleNames.push(externalModuleName); + } + } + } + return { aliasedModuleNames: aliasedModuleNames, unaliasedModuleNames: unaliasedModuleNames, importAliasNames: importAliasNames }; + } + function getAMDImportExpressionForImport(node) { + if (ts.isImportEqualsDeclaration(node) || ts.isExportDeclaration(node) || !ts.getExternalModuleNameLiteral(node, currentSourceFile, host, resolver, compilerOptions)) { + return undefined; + } + var name = ts.getLocalNameForExternalImport(node, currentSourceFile); // TODO: GH#18217 + var expr = getHelperExpressionForImport(node, name); + if (expr === name) { + return undefined; + } + return ts.createExpressionStatement(ts.createAssignment(name, expr)); + } + /** + * Transforms a SourceFile into an AMD or UMD module body. + * + * @param node The SourceFile node. + */ + function transformAsynchronousModuleBody(node) { + startLexicalEnvironment(); + var statements = []; + var statementOffset = ts.addPrologue(statements, node.statements, /*ensureUseStrict*/ !compilerOptions.noImplicitUseStrict, sourceElementVisitor); + if (shouldEmitUnderscoreUnderscoreESModule()) { + ts.append(statements, createUnderscoreUnderscoreESModule()); + } + if (ts.length(currentModuleInfo.exportedNames)) { + ts.append(statements, ts.createExpressionStatement(ts.reduceLeft(currentModuleInfo.exportedNames, function (prev, nextId) { return ts.createAssignment(ts.createPropertyAccess(ts.createIdentifier("exports"), ts.createIdentifier(ts.idText(nextId))), prev); }, ts.createVoidZero()))); + } + // Visit each statement of the module body. + ts.append(statements, ts.visitNode(currentModuleInfo.externalHelpersImportDeclaration, sourceElementVisitor, ts.isStatement)); + if (moduleKind === ts.ModuleKind.AMD) { + ts.addRange(statements, ts.mapDefined(currentModuleInfo.externalImports, getAMDImportExpressionForImport)); + } + ts.addRange(statements, ts.visitNodes(node.statements, sourceElementVisitor, ts.isStatement, statementOffset)); + // Append the 'export =' statement if provided. + addExportEqualsIfNeeded(statements, /*emitAsReturn*/ true); + // End the lexical environment for the module body + // and merge any new lexical declarations. + ts.insertStatementsAfterStandardPrologue(statements, endLexicalEnvironment()); + var body = ts.createBlock(statements, /*multiLine*/ true); + if (needUMDDynamicImportHelper) { + ts.addEmitHelper(body, dynamicImportUMDHelper); + } + return body; + } + /** + * Adds the down-level representation of `export=` to the statement list if one exists + * in the source file. + * + * @param statements The Statement list to modify. + * @param emitAsReturn A value indicating whether to emit the `export=` statement as a + * return statement. + */ + function addExportEqualsIfNeeded(statements, emitAsReturn) { + if (currentModuleInfo.exportEquals) { + var expressionResult = ts.visitNode(currentModuleInfo.exportEquals.expression, moduleExpressionElementVisitor); + if (expressionResult) { + if (emitAsReturn) { + var statement = ts.createReturn(expressionResult); + ts.setTextRange(statement, currentModuleInfo.exportEquals); + ts.setEmitFlags(statement, 384 /* NoTokenSourceMaps */ | 1536 /* NoComments */); + statements.push(statement); + } + else { + var statement = ts.createExpressionStatement(ts.createAssignment(ts.createPropertyAccess(ts.createIdentifier("module"), "exports"), expressionResult)); + ts.setTextRange(statement, currentModuleInfo.exportEquals); + ts.setEmitFlags(statement, 1536 /* NoComments */); + statements.push(statement); + } + } + } + } + // + // Top-Level Source Element Visitors + // + /** + * Visits a node at the top level of the source file. + * + * @param node The node to visit. + */ + function sourceElementVisitor(node) { + switch (node.kind) { + case 254 /* ImportDeclaration */: + return visitImportDeclaration(node); + case 253 /* ImportEqualsDeclaration */: + return visitImportEqualsDeclaration(node); + case 260 /* ExportDeclaration */: + return visitExportDeclaration(node); + case 259 /* ExportAssignment */: + return visitExportAssignment(node); + case 225 /* VariableStatement */: + return visitVariableStatement(node); + case 244 /* FunctionDeclaration */: + return visitFunctionDeclaration(node); + case 245 /* ClassDeclaration */: + return visitClassDeclaration(node); + case 328 /* MergeDeclarationMarker */: + return visitMergeDeclarationMarker(node); + case 329 /* EndOfDeclarationMarker */: + return visitEndOfDeclarationMarker(node); + default: + return ts.visitEachChild(node, moduleExpressionElementVisitor, context); + } + } + function moduleExpressionElementVisitor(node) { + // This visitor does not need to descend into the tree if there is no dynamic import or destructuring assignment, + // as export/import statements are only transformed at the top level of a file. + if (!(node.transformFlags & 2097152 /* ContainsDynamicImport */) && !(node.transformFlags & 1024 /* ContainsDestructuringAssignment */)) { + return node; + } + if (ts.isImportCall(node)) { + return visitImportCallExpression(node); + } + else if (ts.isDestructuringAssignment(node)) { + return visitDestructuringAssignment(node); + } + else { + return ts.visitEachChild(node, moduleExpressionElementVisitor, context); + } + } + function destructuringNeedsFlattening(node) { + if (ts.isObjectLiteralExpression(node)) { + for (var _i = 0, _a = node.properties; _i < _a.length; _i++) { + var elem = _a[_i]; + switch (elem.kind) { + case 281 /* PropertyAssignment */: + if (destructuringNeedsFlattening(elem.initializer)) { + return true; + } + break; + case 282 /* ShorthandPropertyAssignment */: + if (destructuringNeedsFlattening(elem.name)) { + return true; + } + break; + case 283 /* SpreadAssignment */: + if (destructuringNeedsFlattening(elem.expression)) { + return true; + } + break; + case 161 /* MethodDeclaration */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + return false; + default: ts.Debug.assertNever(elem, "Unhandled object member kind"); + } + } + } + else if (ts.isArrayLiteralExpression(node)) { + for (var _b = 0, _c = node.elements; _b < _c.length; _b++) { + var elem = _c[_b]; + if (ts.isSpreadElement(elem)) { + if (destructuringNeedsFlattening(elem.expression)) { + return true; + } + } + else if (destructuringNeedsFlattening(elem)) { + return true; + } + } + } + else if (ts.isIdentifier(node)) { + return ts.length(getExports(node)) > (ts.isExportName(node) ? 1 : 0); + } + return false; + } + function visitDestructuringAssignment(node) { + if (destructuringNeedsFlattening(node.left)) { + return ts.flattenDestructuringAssignment(node, moduleExpressionElementVisitor, context, 0 /* All */, /*needsValue*/ false, createAllExportExpressions); + } + return ts.visitEachChild(node, moduleExpressionElementVisitor, context); + } + function visitImportCallExpression(node) { + var argument = ts.visitNode(ts.firstOrUndefined(node.arguments), moduleExpressionElementVisitor); + var containsLexicalThis = !!(node.transformFlags & 4096 /* ContainsLexicalThis */); + switch (compilerOptions.module) { + case ts.ModuleKind.AMD: + return createImportCallExpressionAMD(argument, containsLexicalThis); + case ts.ModuleKind.UMD: + return createImportCallExpressionUMD(argument, containsLexicalThis); + case ts.ModuleKind.CommonJS: + default: + return createImportCallExpressionCommonJS(argument, containsLexicalThis); + } + } + function createImportCallExpressionUMD(arg, containsLexicalThis) { + // (function (factory) { + // ... (regular UMD) + // } + // })(function (require, exports, useSyncRequire) { + // "use strict"; + // Object.defineProperty(exports, "__esModule", { value: true }); + // var __syncRequire = typeof module === "object" && typeof module.exports === "object"; + // var __resolved = new Promise(function (resolve) { resolve(); }); + // ..... + // __syncRequire + // ? __resolved.then(function () { return require(x); }) /*CommonJs Require*/ + // : new Promise(function (_a, _b) { require([x], _a, _b); }); /*Amd Require*/ + // }); + needUMDDynamicImportHelper = true; + if (ts.isSimpleCopiableExpression(arg)) { + var argClone = ts.isGeneratedIdentifier(arg) ? arg : ts.isStringLiteral(arg) ? ts.createLiteral(arg) : ts.setEmitFlags(ts.setTextRange(ts.getSynthesizedClone(arg), arg), 1536 /* NoComments */); + return ts.createConditional( + /*condition*/ ts.createIdentifier("__syncRequire"), + /*whenTrue*/ createImportCallExpressionCommonJS(arg, containsLexicalThis), + /*whenFalse*/ createImportCallExpressionAMD(argClone, containsLexicalThis)); + } + else { + var temp = ts.createTempVariable(hoistVariableDeclaration); + return ts.createComma(ts.createAssignment(temp, arg), ts.createConditional( + /*condition*/ ts.createIdentifier("__syncRequire"), + /*whenTrue*/ createImportCallExpressionCommonJS(temp, containsLexicalThis), + /*whenFalse*/ createImportCallExpressionAMD(temp, containsLexicalThis))); + } + } + function createImportCallExpressionAMD(arg, containsLexicalThis) { + // improt("./blah") + // emit as + // define(["require", "exports", "blah"], function (require, exports) { + // ... + // new Promise(function (_a, _b) { require([x], _a, _b); }); /*Amd Require*/ + // }); + var resolve = ts.createUniqueName("resolve"); + var reject = ts.createUniqueName("reject"); + var parameters = [ + ts.createParameter(/*decorator*/ undefined, /*modifiers*/ undefined, /*dotDotDotToken*/ undefined, /*name*/ resolve), + ts.createParameter(/*decorator*/ undefined, /*modifiers*/ undefined, /*dotDotDotToken*/ undefined, /*name*/ reject) + ]; + var body = ts.createBlock([ + ts.createExpressionStatement(ts.createCall(ts.createIdentifier("require"), + /*typeArguments*/ undefined, [ts.createArrayLiteral([arg || ts.createOmittedExpression()]), resolve, reject])) + ]); + var func; + if (languageVersion >= 2 /* ES2015 */) { + func = ts.createArrowFunction( + /*modifiers*/ undefined, + /*typeParameters*/ undefined, parameters, + /*type*/ undefined, + /*equalsGreaterThanToken*/ undefined, body); + } + else { + func = ts.createFunctionExpression( + /*modifiers*/ undefined, + /*asteriskToken*/ undefined, + /*name*/ undefined, + /*typeParameters*/ undefined, parameters, + /*type*/ undefined, body); + // if there is a lexical 'this' in the import call arguments, ensure we indicate + // that this new function expression indicates it captures 'this' so that the + // es2015 transformer will properly substitute 'this' with '_this'. + if (containsLexicalThis) { + ts.setEmitFlags(func, 8 /* CapturesThis */); + } + } + var promise = ts.createNew(ts.createIdentifier("Promise"), /*typeArguments*/ undefined, [func]); + if (compilerOptions.esModuleInterop) { + context.requestEmitHelper(ts.importStarHelper); + return ts.createCall(ts.createPropertyAccess(promise, ts.createIdentifier("then")), /*typeArguments*/ undefined, [ts.getUnscopedHelperName("__importStar")]); + } + return promise; + } + function createImportCallExpressionCommonJS(arg, containsLexicalThis) { + // import("./blah") + // emit as + // Promise.resolve().then(function () { return require(x); }) /*CommonJs Require*/ + // We have to wrap require in then callback so that require is done in asynchronously + // if we simply do require in resolve callback in Promise constructor. We will execute the loading immediately + var promiseResolveCall = ts.createCall(ts.createPropertyAccess(ts.createIdentifier("Promise"), "resolve"), /*typeArguments*/ undefined, /*argumentsArray*/ []); + var requireCall = ts.createCall(ts.createIdentifier("require"), /*typeArguments*/ undefined, arg ? [arg] : []); + if (compilerOptions.esModuleInterop) { + context.requestEmitHelper(ts.importStarHelper); + requireCall = ts.createCall(ts.getUnscopedHelperName("__importStar"), /*typeArguments*/ undefined, [requireCall]); + } + var func; + if (languageVersion >= 2 /* ES2015 */) { + func = ts.createArrowFunction( + /*modifiers*/ undefined, + /*typeParameters*/ undefined, + /*parameters*/ [], + /*type*/ undefined, + /*equalsGreaterThanToken*/ undefined, requireCall); + } + else { + func = ts.createFunctionExpression( + /*modifiers*/ undefined, + /*asteriskToken*/ undefined, + /*name*/ undefined, + /*typeParameters*/ undefined, + /*parameters*/ [], + /*type*/ undefined, ts.createBlock([ts.createReturn(requireCall)])); + // if there is a lexical 'this' in the import call arguments, ensure we indicate + // that this new function expression indicates it captures 'this' so that the + // es2015 transformer will properly substitute 'this' with '_this'. + if (containsLexicalThis) { + ts.setEmitFlags(func, 8 /* CapturesThis */); + } + } + return ts.createCall(ts.createPropertyAccess(promiseResolveCall, "then"), /*typeArguments*/ undefined, [func]); + } + function getHelperExpressionForExport(node, innerExpr) { + if (!compilerOptions.esModuleInterop || ts.getEmitFlags(node) & 67108864 /* NeverApplyImportHelper */) { + return innerExpr; + } + if (ts.getExportNeedsImportStarHelper(node)) { + context.requestEmitHelper(ts.importStarHelper); + return ts.createCall(ts.getUnscopedHelperName("__importStar"), /*typeArguments*/ undefined, [innerExpr]); + } + return innerExpr; + } + function getHelperExpressionForImport(node, innerExpr) { + if (!compilerOptions.esModuleInterop || ts.getEmitFlags(node) & 67108864 /* NeverApplyImportHelper */) { + return innerExpr; + } + if (ts.getImportNeedsImportStarHelper(node)) { + context.requestEmitHelper(ts.importStarHelper); + return ts.createCall(ts.getUnscopedHelperName("__importStar"), /*typeArguments*/ undefined, [innerExpr]); + } + if (ts.getImportNeedsImportDefaultHelper(node)) { + context.requestEmitHelper(ts.importDefaultHelper); + return ts.createCall(ts.getUnscopedHelperName("__importDefault"), /*typeArguments*/ undefined, [innerExpr]); + } + return innerExpr; + } + /** + * Visits an ImportDeclaration node. + * + * @param node The node to visit. + */ + function visitImportDeclaration(node) { + var statements; + var namespaceDeclaration = ts.getNamespaceDeclarationNode(node); + if (moduleKind !== ts.ModuleKind.AMD) { + if (!node.importClause) { + // import "mod"; + return ts.setOriginalNode(ts.setTextRange(ts.createExpressionStatement(createRequireCall(node)), node), node); + } + else { + var variables = []; + if (namespaceDeclaration && !ts.isDefaultImport(node)) { + // import * as n from "mod"; + variables.push(ts.createVariableDeclaration(ts.getSynthesizedClone(namespaceDeclaration.name), + /*type*/ undefined, getHelperExpressionForImport(node, createRequireCall(node)))); + } + else { + // import d from "mod"; + // import { x, y } from "mod"; + // import d, { x, y } from "mod"; + // import d, * as n from "mod"; + variables.push(ts.createVariableDeclaration(ts.getGeneratedNameForNode(node), + /*type*/ undefined, getHelperExpressionForImport(node, createRequireCall(node)))); + if (namespaceDeclaration && ts.isDefaultImport(node)) { + variables.push(ts.createVariableDeclaration(ts.getSynthesizedClone(namespaceDeclaration.name), + /*type*/ undefined, ts.getGeneratedNameForNode(node))); + } + } + statements = ts.append(statements, ts.setOriginalNode(ts.setTextRange(ts.createVariableStatement( + /*modifiers*/ undefined, ts.createVariableDeclarationList(variables, languageVersion >= 2 /* ES2015 */ ? 2 /* Const */ : 0 /* None */)), + /*location*/ node), + /*original*/ node)); + } + } + else if (namespaceDeclaration && ts.isDefaultImport(node)) { + // import d, * as n from "mod"; + statements = ts.append(statements, ts.createVariableStatement( + /*modifiers*/ undefined, ts.createVariableDeclarationList([ + ts.setOriginalNode(ts.setTextRange(ts.createVariableDeclaration(ts.getSynthesizedClone(namespaceDeclaration.name), + /*type*/ undefined, ts.getGeneratedNameForNode(node)), + /*location*/ node), + /*original*/ node) + ], languageVersion >= 2 /* ES2015 */ ? 2 /* Const */ : 0 /* None */))); + } + if (hasAssociatedEndOfDeclarationMarker(node)) { + // Defer exports until we encounter an EndOfDeclarationMarker node + var id = ts.getOriginalNodeId(node); + deferredExports[id] = appendExportsOfImportDeclaration(deferredExports[id], node); + } + else { + statements = appendExportsOfImportDeclaration(statements, node); + } + return ts.singleOrMany(statements); + } + /** + * Creates a `require()` call to import an external module. + * + * @param importNode The declararation to import. + */ + function createRequireCall(importNode) { + var moduleName = ts.getExternalModuleNameLiteral(importNode, currentSourceFile, host, resolver, compilerOptions); + var args = []; + if (moduleName) { + args.push(moduleName); + } + return ts.createCall(ts.createIdentifier("require"), /*typeArguments*/ undefined, args); + } + /** + * Visits an ImportEqualsDeclaration node. + * + * @param node The node to visit. + */ + function visitImportEqualsDeclaration(node) { + ts.Debug.assert(ts.isExternalModuleImportEqualsDeclaration(node), "import= for internal module references should be handled in an earlier transformer."); + var statements; + if (moduleKind !== ts.ModuleKind.AMD) { + if (ts.hasModifier(node, 1 /* Export */)) { + statements = ts.append(statements, ts.setOriginalNode(ts.setTextRange(ts.createExpressionStatement(createExportExpression(node.name, createRequireCall(node))), node), node)); + } + else { + statements = ts.append(statements, ts.setOriginalNode(ts.setTextRange(ts.createVariableStatement( + /*modifiers*/ undefined, ts.createVariableDeclarationList([ + ts.createVariableDeclaration(ts.getSynthesizedClone(node.name), + /*type*/ undefined, createRequireCall(node)) + ], + /*flags*/ languageVersion >= 2 /* ES2015 */ ? 2 /* Const */ : 0 /* None */)), node), node)); + } + } + else { + if (ts.hasModifier(node, 1 /* Export */)) { + statements = ts.append(statements, ts.setOriginalNode(ts.setTextRange(ts.createExpressionStatement(createExportExpression(ts.getExportName(node), ts.getLocalName(node))), node), node)); + } + } + if (hasAssociatedEndOfDeclarationMarker(node)) { + // Defer exports until we encounter an EndOfDeclarationMarker node + var id = ts.getOriginalNodeId(node); + deferredExports[id] = appendExportsOfImportEqualsDeclaration(deferredExports[id], node); + } + else { + statements = appendExportsOfImportEqualsDeclaration(statements, node); + } + return ts.singleOrMany(statements); + } + /** + * Visits an ExportDeclaration node. + * + * @param The node to visit. + */ + function visitExportDeclaration(node) { + if (!node.moduleSpecifier) { + // Elide export declarations with no module specifier as they are handled + // elsewhere. + return undefined; + } + var generatedName = ts.getGeneratedNameForNode(node); + if (node.exportClause && ts.isNamedExports(node.exportClause)) { + var statements = []; + // export { x, y } from "mod"; + if (moduleKind !== ts.ModuleKind.AMD) { + statements.push(ts.setOriginalNode(ts.setTextRange(ts.createVariableStatement( + /*modifiers*/ undefined, ts.createVariableDeclarationList([ + ts.createVariableDeclaration(generatedName, + /*type*/ undefined, createRequireCall(node)) + ])), + /*location*/ node), + /* original */ node)); + } + for (var _i = 0, _a = node.exportClause.elements; _i < _a.length; _i++) { + var specifier = _a[_i]; + if (languageVersion === 0 /* ES3 */) { + statements.push(ts.setOriginalNode(ts.setTextRange(ts.createExpressionStatement(createCreateBindingHelper(context, generatedName, ts.createLiteral(specifier.propertyName || specifier.name), specifier.propertyName ? ts.createLiteral(specifier.name) : undefined)), specifier), specifier)); + } + else { + var exportedValue = ts.createPropertyAccess(generatedName, specifier.propertyName || specifier.name); + statements.push(ts.setOriginalNode(ts.setTextRange(ts.createExpressionStatement(createExportExpression(ts.getExportName(specifier), exportedValue, /* location */ undefined, /* liveBinding */ true)), specifier), specifier)); + } + } + return ts.singleOrMany(statements); + } + else if (node.exportClause) { + var statements = []; + // export * as ns from "mod"; + statements.push(ts.setOriginalNode(ts.setTextRange(ts.createExpressionStatement(createExportExpression(ts.getSynthesizedClone(node.exportClause.name), moduleKind !== ts.ModuleKind.AMD ? + getHelperExpressionForExport(node, createRequireCall(node)) : + ts.createIdentifier(ts.idText(node.exportClause.name)))), node), node)); + return ts.singleOrMany(statements); + } + else { + // export * from "mod"; + return ts.setOriginalNode(ts.setTextRange(ts.createExpressionStatement(createExportStarHelper(context, moduleKind !== ts.ModuleKind.AMD ? createRequireCall(node) : generatedName)), node), node); + } + } + /** + * Visits an ExportAssignment node. + * + * @param node The node to visit. + */ + function visitExportAssignment(node) { + if (node.isExportEquals) { + return undefined; + } + var statements; + var original = node.original; + if (original && hasAssociatedEndOfDeclarationMarker(original)) { + // Defer exports until we encounter an EndOfDeclarationMarker node + var id = ts.getOriginalNodeId(node); + deferredExports[id] = appendExportStatement(deferredExports[id], ts.createIdentifier("default"), ts.visitNode(node.expression, moduleExpressionElementVisitor), /*location*/ node, /*allowComments*/ true); + } + else { + statements = appendExportStatement(statements, ts.createIdentifier("default"), ts.visitNode(node.expression, moduleExpressionElementVisitor), /*location*/ node, /*allowComments*/ true); + } + return ts.singleOrMany(statements); + } + /** + * Visits a FunctionDeclaration node. + * + * @param node The node to visit. + */ + function visitFunctionDeclaration(node) { + var statements; + if (ts.hasModifier(node, 1 /* Export */)) { + statements = ts.append(statements, ts.setOriginalNode(ts.setTextRange(ts.createFunctionDeclaration( + /*decorators*/ undefined, ts.visitNodes(node.modifiers, modifierVisitor, ts.isModifier), node.asteriskToken, ts.getDeclarationName(node, /*allowComments*/ true, /*allowSourceMaps*/ true), + /*typeParameters*/ undefined, ts.visitNodes(node.parameters, moduleExpressionElementVisitor), + /*type*/ undefined, ts.visitEachChild(node.body, moduleExpressionElementVisitor, context)), + /*location*/ node), + /*original*/ node)); + } + else { + statements = ts.append(statements, ts.visitEachChild(node, moduleExpressionElementVisitor, context)); + } + if (hasAssociatedEndOfDeclarationMarker(node)) { + // Defer exports until we encounter an EndOfDeclarationMarker node + var id = ts.getOriginalNodeId(node); + deferredExports[id] = appendExportsOfHoistedDeclaration(deferredExports[id], node); + } + else { + statements = appendExportsOfHoistedDeclaration(statements, node); + } + return ts.singleOrMany(statements); + } + /** + * Visits a ClassDeclaration node. + * + * @param node The node to visit. + */ + function visitClassDeclaration(node) { + var statements; + if (ts.hasModifier(node, 1 /* Export */)) { + statements = ts.append(statements, ts.setOriginalNode(ts.setTextRange(ts.createClassDeclaration( + /*decorators*/ undefined, ts.visitNodes(node.modifiers, modifierVisitor, ts.isModifier), ts.getDeclarationName(node, /*allowComments*/ true, /*allowSourceMaps*/ true), + /*typeParameters*/ undefined, ts.visitNodes(node.heritageClauses, moduleExpressionElementVisitor), ts.visitNodes(node.members, moduleExpressionElementVisitor)), node), node)); + } + else { + statements = ts.append(statements, ts.visitEachChild(node, moduleExpressionElementVisitor, context)); + } + if (hasAssociatedEndOfDeclarationMarker(node)) { + // Defer exports until we encounter an EndOfDeclarationMarker node + var id = ts.getOriginalNodeId(node); + deferredExports[id] = appendExportsOfHoistedDeclaration(deferredExports[id], node); + } + else { + statements = appendExportsOfHoistedDeclaration(statements, node); + } + return ts.singleOrMany(statements); + } + /** + * Visits a VariableStatement node. + * + * @param node The node to visit. + */ + function visitVariableStatement(node) { + var statements; + var variables; + var expressions; + if (ts.hasModifier(node, 1 /* Export */)) { + var modifiers = void 0; + // If we're exporting these variables, then these just become assignments to 'exports.x'. + for (var _i = 0, _a = node.declarationList.declarations; _i < _a.length; _i++) { + var variable = _a[_i]; + if (ts.isIdentifier(variable.name) && ts.isLocalName(variable.name)) { + if (!modifiers) { + modifiers = ts.visitNodes(node.modifiers, modifierVisitor, ts.isModifier); + } + variables = ts.append(variables, variable); + } + else if (variable.initializer) { + expressions = ts.append(expressions, transformInitializedVariable(variable)); + } + } + if (variables) { + statements = ts.append(statements, ts.updateVariableStatement(node, modifiers, ts.updateVariableDeclarationList(node.declarationList, variables))); + } + if (expressions) { + statements = ts.append(statements, ts.setOriginalNode(ts.setTextRange(ts.createExpressionStatement(ts.inlineExpressions(expressions)), node), node)); + } + } + else { + statements = ts.append(statements, ts.visitEachChild(node, moduleExpressionElementVisitor, context)); + } + if (hasAssociatedEndOfDeclarationMarker(node)) { + // Defer exports until we encounter an EndOfDeclarationMarker node + var id = ts.getOriginalNodeId(node); + deferredExports[id] = appendExportsOfVariableStatement(deferredExports[id], node); + } + else { + statements = appendExportsOfVariableStatement(statements, node); + } + return ts.singleOrMany(statements); + } + function createAllExportExpressions(name, value, location) { + var exportedNames = getExports(name); + if (exportedNames) { + // For each additional export of the declaration, apply an export assignment. + var expression = ts.isExportName(name) ? value : ts.createAssignment(name, value); + for (var _i = 0, exportedNames_1 = exportedNames; _i < exportedNames_1.length; _i++) { + var exportName = exportedNames_1[_i]; + // Mark the node to prevent triggering substitution. + ts.setEmitFlags(expression, 4 /* NoSubstitution */); + expression = createExportExpression(exportName, expression, /*location*/ location); + } + return expression; + } + return ts.createAssignment(name, value); + } + /** + * Transforms an exported variable with an initializer into an expression. + * + * @param node The node to transform. + */ + function transformInitializedVariable(node) { + if (ts.isBindingPattern(node.name)) { + return ts.flattenDestructuringAssignment(ts.visitNode(node, moduleExpressionElementVisitor), + /*visitor*/ undefined, context, 0 /* All */, + /*needsValue*/ false, createAllExportExpressions); + } + else { + return ts.createAssignment(ts.setTextRange(ts.createPropertyAccess(ts.createIdentifier("exports"), node.name), + /*location*/ node.name), node.initializer ? ts.visitNode(node.initializer, moduleExpressionElementVisitor) : ts.createVoidZero()); + } + } + /** + * Visits a MergeDeclarationMarker used as a placeholder for the beginning of a merged + * and transformed declaration. + * + * @param node The node to visit. + */ + function visitMergeDeclarationMarker(node) { + // For an EnumDeclaration or ModuleDeclaration that merges with a preceeding + // declaration we do not emit a leading variable declaration. To preserve the + // begin/end semantics of the declararation and to properly handle exports + // we wrapped the leading variable declaration in a `MergeDeclarationMarker`. + // + // To balance the declaration, add the exports of the elided variable + // statement. + if (hasAssociatedEndOfDeclarationMarker(node) && node.original.kind === 225 /* VariableStatement */) { + var id = ts.getOriginalNodeId(node); + deferredExports[id] = appendExportsOfVariableStatement(deferredExports[id], node.original); + } + return node; + } + /** + * Determines whether a node has an associated EndOfDeclarationMarker. + * + * @param node The node to test. + */ + function hasAssociatedEndOfDeclarationMarker(node) { + return (ts.getEmitFlags(node) & 4194304 /* HasEndOfDeclarationMarker */) !== 0; + } + /** + * Visits a DeclarationMarker used as a placeholder for the end of a transformed + * declaration. + * + * @param node The node to visit. + */ + function visitEndOfDeclarationMarker(node) { + // For some transformations we emit an `EndOfDeclarationMarker` to mark the actual + // end of the transformed declaration. We use this marker to emit any deferred exports + // of the declaration. + var id = ts.getOriginalNodeId(node); + var statements = deferredExports[id]; + if (statements) { + delete deferredExports[id]; + return ts.append(statements, node); + } + return node; + } + /** + * Appends the exports of an ImportDeclaration to a statement list, returning the + * statement list. + * + * @param statements A statement list to which the down-level export statements are to be + * appended. If `statements` is `undefined`, a new array is allocated if statements are + * appended. + * @param decl The declaration whose exports are to be recorded. + */ + function appendExportsOfImportDeclaration(statements, decl) { + if (currentModuleInfo.exportEquals) { + return statements; + } + var importClause = decl.importClause; + if (!importClause) { + return statements; + } + if (importClause.name) { + statements = appendExportsOfDeclaration(statements, importClause); + } + var namedBindings = importClause.namedBindings; + if (namedBindings) { + switch (namedBindings.kind) { + case 256 /* NamespaceImport */: + statements = appendExportsOfDeclaration(statements, namedBindings); + break; + case 257 /* NamedImports */: + for (var _i = 0, _a = namedBindings.elements; _i < _a.length; _i++) { + var importBinding = _a[_i]; + statements = appendExportsOfDeclaration(statements, importBinding, /* liveBinding */ true); + } + break; + } + } + return statements; + } + /** + * Appends the exports of an ImportEqualsDeclaration to a statement list, returning the + * statement list. + * + * @param statements A statement list to which the down-level export statements are to be + * appended. If `statements` is `undefined`, a new array is allocated if statements are + * appended. + * @param decl The declaration whose exports are to be recorded. + */ + function appendExportsOfImportEqualsDeclaration(statements, decl) { + if (currentModuleInfo.exportEquals) { + return statements; + } + return appendExportsOfDeclaration(statements, decl); + } + /** + * Appends the exports of a VariableStatement to a statement list, returning the statement + * list. + * + * @param statements A statement list to which the down-level export statements are to be + * appended. If `statements` is `undefined`, a new array is allocated if statements are + * appended. + * @param node The VariableStatement whose exports are to be recorded. + */ + function appendExportsOfVariableStatement(statements, node) { + if (currentModuleInfo.exportEquals) { + return statements; + } + for (var _i = 0, _a = node.declarationList.declarations; _i < _a.length; _i++) { + var decl = _a[_i]; + statements = appendExportsOfBindingElement(statements, decl); + } + return statements; + } + /** + * Appends the exports of a VariableDeclaration or BindingElement to a statement list, + * returning the statement list. + * + * @param statements A statement list to which the down-level export statements are to be + * appended. If `statements` is `undefined`, a new array is allocated if statements are + * appended. + * @param decl The declaration whose exports are to be recorded. + */ + function appendExportsOfBindingElement(statements, decl) { + if (currentModuleInfo.exportEquals) { + return statements; + } + if (ts.isBindingPattern(decl.name)) { + for (var _i = 0, _a = decl.name.elements; _i < _a.length; _i++) { + var element = _a[_i]; + if (!ts.isOmittedExpression(element)) { + statements = appendExportsOfBindingElement(statements, element); + } + } + } + else if (!ts.isGeneratedIdentifier(decl.name)) { + statements = appendExportsOfDeclaration(statements, decl); + } + return statements; + } + /** + * Appends the exports of a ClassDeclaration or FunctionDeclaration to a statement list, + * returning the statement list. + * + * @param statements A statement list to which the down-level export statements are to be + * appended. If `statements` is `undefined`, a new array is allocated if statements are + * appended. + * @param decl The declaration whose exports are to be recorded. + */ + function appendExportsOfHoistedDeclaration(statements, decl) { + if (currentModuleInfo.exportEquals) { + return statements; + } + if (ts.hasModifier(decl, 1 /* Export */)) { + var exportName = ts.hasModifier(decl, 512 /* Default */) ? ts.createIdentifier("default") : ts.getDeclarationName(decl); + statements = appendExportStatement(statements, exportName, ts.getLocalName(decl), /*location*/ decl); + } + if (decl.name) { + statements = appendExportsOfDeclaration(statements, decl); + } + return statements; + } + /** + * Appends the exports of a declaration to a statement list, returning the statement list. + * + * @param statements A statement list to which the down-level export statements are to be + * appended. If `statements` is `undefined`, a new array is allocated if statements are + * appended. + * @param decl The declaration to export. + */ + function appendExportsOfDeclaration(statements, decl, liveBinding) { + var name = ts.getDeclarationName(decl); + var exportSpecifiers = currentModuleInfo.exportSpecifiers.get(ts.idText(name)); + if (exportSpecifiers) { + for (var _i = 0, exportSpecifiers_1 = exportSpecifiers; _i < exportSpecifiers_1.length; _i++) { + var exportSpecifier = exportSpecifiers_1[_i]; + statements = appendExportStatement(statements, exportSpecifier.name, name, /*location*/ exportSpecifier.name, /* allowComments */ undefined, liveBinding); + } + } + return statements; + } + /** + * Appends the down-level representation of an export to a statement list, returning the + * statement list. + * + * @param statements A statement list to which the down-level export statements are to be + * appended. If `statements` is `undefined`, a new array is allocated if statements are + * appended. + * @param exportName The name of the export. + * @param expression The expression to export. + * @param location The location to use for source maps and comments for the export. + * @param allowComments Whether to allow comments on the export. + */ + function appendExportStatement(statements, exportName, expression, location, allowComments, liveBinding) { + statements = ts.append(statements, createExportStatement(exportName, expression, location, allowComments, liveBinding)); + return statements; + } + function createUnderscoreUnderscoreESModule() { + var statement; + if (languageVersion === 0 /* ES3 */) { + statement = ts.createExpressionStatement(createExportExpression(ts.createIdentifier("__esModule"), ts.createLiteral(/*value*/ true))); + } + else { + statement = ts.createExpressionStatement(ts.createCall(ts.createPropertyAccess(ts.createIdentifier("Object"), "defineProperty"), + /*typeArguments*/ undefined, [ + ts.createIdentifier("exports"), + ts.createLiteral("__esModule"), + ts.createObjectLiteral([ + ts.createPropertyAssignment("value", ts.createLiteral(/*value*/ true)) + ]) + ])); + } + ts.setEmitFlags(statement, 1048576 /* CustomPrologue */); + return statement; + } + /** + * Creates a call to the current file's export function to export a value. + * + * @param name The bound name of the export. + * @param value The exported value. + * @param location The location to use for source maps and comments for the export. + * @param allowComments An optional value indicating whether to emit comments for the statement. + */ + function createExportStatement(name, value, location, allowComments, liveBinding) { + var statement = ts.setTextRange(ts.createExpressionStatement(createExportExpression(name, value, /* location */ undefined, liveBinding)), location); + ts.startOnNewLine(statement); + if (!allowComments) { + ts.setEmitFlags(statement, 1536 /* NoComments */); + } + return statement; + } + /** + * Creates a call to the current file's export function to export a value. + * + * @param name The bound name of the export. + * @param value The exported value. + * @param location The location to use for source maps and comments for the export. + */ + function createExportExpression(name, value, location, liveBinding) { + return ts.setTextRange(liveBinding && languageVersion !== 0 /* ES3 */ ? ts.createCall(ts.createPropertyAccess(ts.createIdentifier("Object"), "defineProperty"), + /*typeArguments*/ undefined, [ + ts.createIdentifier("exports"), + ts.createLiteral(name), + ts.createObjectLiteral([ + ts.createPropertyAssignment("enumerable", ts.createLiteral(/*value*/ true)), + ts.createPropertyAssignment("get", ts.createFunctionExpression( + /*modifiers*/ undefined, + /*asteriskToken*/ undefined, + /*name*/ undefined, + /*typeParameters*/ undefined, + /*parameters*/ [], + /*type*/ undefined, ts.createBlock([ts.createReturn(value)]))) + ]) + ]) : ts.createAssignment(ts.createPropertyAccess(ts.createIdentifier("exports"), ts.getSynthesizedClone(name)), value), location); + } + // + // Modifier Visitors + // + /** + * Visit nodes to elide module-specific modifiers. + * + * @param node The node to visit. + */ + function modifierVisitor(node) { + // Elide module-specific modifiers. + switch (node.kind) { + case 89 /* ExportKeyword */: + case 84 /* DefaultKeyword */: + return undefined; + } + return node; + } + // + // Emit Notification + // + /** + * Hook for node emit notifications. + * + * @param hint A hint as to the intended usage of the node. + * @param node The node to emit. + * @param emit A callback used to emit the node in the printer. + */ + function onEmitNode(hint, node, emitCallback) { + if (node.kind === 290 /* SourceFile */) { + currentSourceFile = node; + currentModuleInfo = moduleInfoMap[ts.getOriginalNodeId(currentSourceFile)]; + noSubstitution = []; + previousOnEmitNode(hint, node, emitCallback); + currentSourceFile = undefined; + currentModuleInfo = undefined; + noSubstitution = undefined; + } + else { + previousOnEmitNode(hint, node, emitCallback); + } + } + // + // Substitutions + // + /** + * Hooks node substitutions. + * + * @param hint A hint as to the intended usage of the node. + * @param node The node to substitute. + */ + function onSubstituteNode(hint, node) { + node = previousOnSubstituteNode(hint, node); + if (node.id && noSubstitution[node.id]) { + return node; + } + if (hint === 1 /* Expression */) { + return substituteExpression(node); + } + else if (ts.isShorthandPropertyAssignment(node)) { + return substituteShorthandPropertyAssignment(node); + } + return node; + } + /** + * Substitution for a ShorthandPropertyAssignment whose declaration name is an imported + * or exported symbol. + * + * @param node The node to substitute. + */ + function substituteShorthandPropertyAssignment(node) { + var name = node.name; + var exportedOrImportedName = substituteExpressionIdentifier(name); + if (exportedOrImportedName !== name) { + // A shorthand property with an assignment initializer is probably part of a + // destructuring assignment + if (node.objectAssignmentInitializer) { + var initializer = ts.createAssignment(exportedOrImportedName, node.objectAssignmentInitializer); + return ts.setTextRange(ts.createPropertyAssignment(name, initializer), node); + } + return ts.setTextRange(ts.createPropertyAssignment(name, exportedOrImportedName), node); + } + return node; + } + /** + * Substitution for an Expression that may contain an imported or exported symbol. + * + * @param node The node to substitute. + */ + function substituteExpression(node) { + switch (node.kind) { + case 75 /* Identifier */: + return substituteExpressionIdentifier(node); + case 209 /* BinaryExpression */: + return substituteBinaryExpression(node); + case 208 /* PostfixUnaryExpression */: + case 207 /* PrefixUnaryExpression */: + return substituteUnaryExpression(node); + } + return node; + } + /** + * Substitution for an Identifier expression that may contain an imported or exported + * symbol. + * + * @param node The node to substitute. + */ + function substituteExpressionIdentifier(node) { + if (ts.getEmitFlags(node) & 4096 /* HelperName */) { + var externalHelpersModuleName = ts.getExternalHelpersModuleName(currentSourceFile); + if (externalHelpersModuleName) { + return ts.createPropertyAccess(externalHelpersModuleName, node); + } + return node; + } + if (!ts.isGeneratedIdentifier(node) && !ts.isLocalName(node)) { + var exportContainer = resolver.getReferencedExportContainer(node, ts.isExportName(node)); + if (exportContainer && exportContainer.kind === 290 /* SourceFile */) { + return ts.setTextRange(ts.createPropertyAccess(ts.createIdentifier("exports"), ts.getSynthesizedClone(node)), + /*location*/ node); + } + var importDeclaration = resolver.getReferencedImportDeclaration(node); + if (importDeclaration) { + if (ts.isImportClause(importDeclaration)) { + return ts.setTextRange(ts.createPropertyAccess(ts.getGeneratedNameForNode(importDeclaration.parent), ts.createIdentifier("default")), + /*location*/ node); + } + else if (ts.isImportSpecifier(importDeclaration)) { + var name = importDeclaration.propertyName || importDeclaration.name; + return ts.setTextRange(ts.createPropertyAccess(ts.getGeneratedNameForNode(importDeclaration.parent.parent.parent), ts.getSynthesizedClone(name)), + /*location*/ node); + } + } + } + return node; + } + /** + * Substitution for a BinaryExpression that may contain an imported or exported symbol. + * + * @param node The node to substitute. + */ + function substituteBinaryExpression(node) { + // When we see an assignment expression whose left-hand side is an exported symbol, + // we should ensure all exports of that symbol are updated with the correct value. + // + // - We do not substitute generated identifiers for any reason. + // - We do not substitute identifiers tagged with the LocalName flag. + // - We do not substitute identifiers that were originally the name of an enum or + // namespace due to how they are transformed in TypeScript. + // - We only substitute identifiers that are exported at the top level. + if (ts.isAssignmentOperator(node.operatorToken.kind) + && ts.isIdentifier(node.left) + && !ts.isGeneratedIdentifier(node.left) + && !ts.isLocalName(node.left) + && !ts.isDeclarationNameOfEnumOrNamespace(node.left)) { + var exportedNames = getExports(node.left); + if (exportedNames) { + // For each additional export of the declaration, apply an export assignment. + var expression = node; + for (var _i = 0, exportedNames_2 = exportedNames; _i < exportedNames_2.length; _i++) { + var exportName = exportedNames_2[_i]; + // Mark the node to prevent triggering this rule again. + noSubstitution[ts.getNodeId(expression)] = true; + expression = createExportExpression(exportName, expression, /*location*/ node); + } + return expression; + } + } + return node; + } + /** + * Substitution for a UnaryExpression that may contain an imported or exported symbol. + * + * @param node The node to substitute. + */ + function substituteUnaryExpression(node) { + // When we see a prefix or postfix increment expression whose operand is an exported + // symbol, we should ensure all exports of that symbol are updated with the correct + // value. + // + // - We do not substitute generated identifiers for any reason. + // - We do not substitute identifiers tagged with the LocalName flag. + // - We do not substitute identifiers that were originally the name of an enum or + // namespace due to how they are transformed in TypeScript. + // - We only substitute identifiers that are exported at the top level. + if ((node.operator === 45 /* PlusPlusToken */ || node.operator === 46 /* MinusMinusToken */) + && ts.isIdentifier(node.operand) + && !ts.isGeneratedIdentifier(node.operand) + && !ts.isLocalName(node.operand) + && !ts.isDeclarationNameOfEnumOrNamespace(node.operand)) { + var exportedNames = getExports(node.operand); + if (exportedNames) { + var expression = node.kind === 208 /* PostfixUnaryExpression */ + ? ts.setTextRange(ts.createBinary(node.operand, ts.createToken(node.operator === 45 /* PlusPlusToken */ ? 63 /* PlusEqualsToken */ : 64 /* MinusEqualsToken */), ts.createLiteral(1)), + /*location*/ node) + : node; + for (var _i = 0, exportedNames_3 = exportedNames; _i < exportedNames_3.length; _i++) { + var exportName = exportedNames_3[_i]; + // Mark the node to prevent triggering this rule again. + noSubstitution[ts.getNodeId(expression)] = true; + expression = createExportExpression(exportName, expression); + } + return expression; + } + } + return node; + } + /** + * Gets the additional exports of a name. + * + * @param name The name. + */ + function getExports(name) { + if (!ts.isGeneratedIdentifier(name)) { + var valueDeclaration = resolver.getReferencedImportDeclaration(name) + || resolver.getReferencedValueDeclaration(name); + if (valueDeclaration) { + return currentModuleInfo + && currentModuleInfo.exportedBindings[ts.getOriginalNodeId(valueDeclaration)]; + } + } + } + } + ts.transformModule = transformModule; + ts.createBindingHelper = { + name: "typescript:commonjscreatebinding", + importName: "__createBinding", + scoped: false, + priority: 1, + text: "\nvar __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {\n if (k2 === undefined) k2 = k;\n Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });\n}) : (function(o, m, k, k2) {\n if (k2 === undefined) k2 = k;\n o[k2] = m[k];\n}));" + }; + function createCreateBindingHelper(context, module, inputName, outputName) { + context.requestEmitHelper(ts.createBindingHelper); + return ts.createCall(ts.getUnscopedHelperName("__createBinding"), /*typeArguments*/ undefined, __spreadArrays([ts.createIdentifier("exports"), module, inputName], (outputName ? [outputName] : []))); + } + ts.setModuleDefaultHelper = { + name: "typescript:commonjscreatevalue", + importName: "__setModuleDefault", + scoped: false, + priority: 1, + text: "\nvar __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {\n Object.defineProperty(o, \"default\", { enumerable: true, value: v });\n}) : function(o, v) {\n o[\"default\"] = v;\n});" + }; + // emit output for the __export helper function + var exportStarHelper = { + name: "typescript:export-star", + importName: "__exportStar", + scoped: false, + dependencies: [ts.createBindingHelper], + priority: 2, + text: "\n var __exportStar = (this && this.__exportStar) || function(m, exports) {\n for (var p in m) if (p !== \"default\" && !exports.hasOwnProperty(p)) __createBinding(exports, m, p);\n };" + }; + function createExportStarHelper(context, module) { + context.requestEmitHelper(exportStarHelper); + return ts.createCall(ts.getUnscopedHelperName("__exportStar"), /*typeArguments*/ undefined, [module, ts.createIdentifier("exports")]); + } + // emit helper for dynamic import + var dynamicImportUMDHelper = { + name: "typescript:dynamicimport-sync-require", + scoped: true, + text: "\n var __syncRequire = typeof module === \"object\" && typeof module.exports === \"object\";" + }; + // emit helper for `import * as Name from "foo"` + ts.importStarHelper = { + name: "typescript:commonjsimportstar", + importName: "__importStar", + scoped: false, + dependencies: [ts.createBindingHelper, ts.setModuleDefaultHelper], + priority: 2, + text: "\nvar __importStar = (this && this.__importStar) || function (mod) {\n if (mod && mod.__esModule) return mod;\n var result = {};\n if (mod != null) for (var k in mod) if (k !== \"default\" && Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\n __setModuleDefault(result, mod);\n return result;\n};" + }; + // emit helper for `import Name from "foo"` + ts.importDefaultHelper = { + name: "typescript:commonjsimportdefault", + importName: "__importDefault", + scoped: false, + text: "\nvar __importDefault = (this && this.__importDefault) || function (mod) {\n return (mod && mod.__esModule) ? mod : { \"default\": mod };\n};" + }; +})(ts || (ts = {})); +/*@internal*/ +var ts; +(function (ts) { + function transformSystemModule(context) { + var startLexicalEnvironment = context.startLexicalEnvironment, endLexicalEnvironment = context.endLexicalEnvironment, hoistVariableDeclaration = context.hoistVariableDeclaration; + var compilerOptions = context.getCompilerOptions(); + var resolver = context.getEmitResolver(); + var host = context.getEmitHost(); + var previousOnSubstituteNode = context.onSubstituteNode; + var previousOnEmitNode = context.onEmitNode; + context.onSubstituteNode = onSubstituteNode; + context.onEmitNode = onEmitNode; + context.enableSubstitution(75 /* Identifier */); // Substitutes expression identifiers for imported symbols. + context.enableSubstitution(282 /* ShorthandPropertyAssignment */); // Substitutes expression identifiers for imported symbols + context.enableSubstitution(209 /* BinaryExpression */); // Substitutes assignments to exported symbols. + context.enableSubstitution(207 /* PrefixUnaryExpression */); // Substitutes updates to exported symbols. + context.enableSubstitution(208 /* PostfixUnaryExpression */); // Substitutes updates to exported symbols. + context.enableSubstitution(219 /* MetaProperty */); // Substitutes 'import.meta' + context.enableEmitNotification(290 /* SourceFile */); // Restore state when substituting nodes in a file. + var moduleInfoMap = []; // The ExternalModuleInfo for each file. + var deferredExports = []; // Exports to defer until an EndOfDeclarationMarker is found. + var exportFunctionsMap = []; // The export function associated with a source file. + var noSubstitutionMap = []; // Set of nodes for which substitution rules should be ignored for each file. + var contextObjectMap = []; // The context object associated with a source file. + var currentSourceFile; // The current file. + var moduleInfo; // ExternalModuleInfo for the current file. + var exportFunction; // The export function for the current file. + var contextObject; // The context object for the current file. + var hoistedStatements; + var enclosingBlockScopedContainer; + var noSubstitution; // Set of nodes for which substitution rules should be ignored. + return ts.chainBundle(transformSourceFile); + /** + * Transforms the module aspects of a SourceFile. + * + * @param node The SourceFile node. + */ + function transformSourceFile(node) { + if (node.isDeclarationFile || !(ts.isEffectiveExternalModule(node, compilerOptions) || node.transformFlags & 2097152 /* ContainsDynamicImport */)) { + return node; + } + var id = ts.getOriginalNodeId(node); + currentSourceFile = node; + enclosingBlockScopedContainer = node; + // System modules have the following shape: + // + // System.register(['dep-1', ... 'dep-n'], function(exports) {/* module body function */}) + // + // The parameter 'exports' here is a callback '(name: string, value: T) => T' that + // is used to publish exported values. 'exports' returns its 'value' argument so in + // most cases expressions that mutate exported values can be rewritten as: + // + // expr -> exports('name', expr) + // + // The only exception in this rule is postfix unary operators, + // see comment to 'substitutePostfixUnaryExpression' for more details + // Collect information about the external module and dependency groups. + moduleInfo = moduleInfoMap[id] = ts.collectExternalModuleInfo(node, resolver, compilerOptions); + // Make sure that the name of the 'exports' function does not conflict with + // existing identifiers. + exportFunction = ts.createUniqueName("exports"); + exportFunctionsMap[id] = exportFunction; + contextObject = contextObjectMap[id] = ts.createUniqueName("context"); + // Add the body of the module. + var dependencyGroups = collectDependencyGroups(moduleInfo.externalImports); + var moduleBodyBlock = createSystemModuleBody(node, dependencyGroups); + var moduleBodyFunction = ts.createFunctionExpression( + /*modifiers*/ undefined, + /*asteriskToken*/ undefined, + /*name*/ undefined, + /*typeParameters*/ undefined, [ + ts.createParameter(/*decorators*/ undefined, /*modifiers*/ undefined, /*dotDotDotToken*/ undefined, exportFunction), + ts.createParameter(/*decorators*/ undefined, /*modifiers*/ undefined, /*dotDotDotToken*/ undefined, contextObject) + ], + /*type*/ undefined, moduleBodyBlock); + // Write the call to `System.register` + // Clear the emit-helpers flag for later passes since we'll have already used it in the module body + // So the helper will be emit at the correct position instead of at the top of the source-file + var moduleName = ts.tryGetModuleNameFromFile(node, host, compilerOptions); + var dependencies = ts.createArrayLiteral(ts.map(dependencyGroups, function (dependencyGroup) { return dependencyGroup.name; })); + var updated = ts.setEmitFlags(ts.updateSourceFileNode(node, ts.setTextRange(ts.createNodeArray([ + ts.createExpressionStatement(ts.createCall(ts.createPropertyAccess(ts.createIdentifier("System"), "register"), + /*typeArguments*/ undefined, moduleName + ? [moduleName, dependencies, moduleBodyFunction] + : [dependencies, moduleBodyFunction])) + ]), node.statements)), 1024 /* NoTrailingComments */); + if (!(compilerOptions.outFile || compilerOptions.out)) { + ts.moveEmitHelpers(updated, moduleBodyBlock, function (helper) { return !helper.scoped; }); + } + if (noSubstitution) { + noSubstitutionMap[id] = noSubstitution; + noSubstitution = undefined; + } + currentSourceFile = undefined; + moduleInfo = undefined; + exportFunction = undefined; + contextObject = undefined; + hoistedStatements = undefined; + enclosingBlockScopedContainer = undefined; + return ts.aggregateTransformFlags(updated); + } + /** + * Collects the dependency groups for this files imports. + * + * @param externalImports The imports for the file. + */ + function collectDependencyGroups(externalImports) { + var groupIndices = ts.createMap(); + var dependencyGroups = []; + for (var _i = 0, externalImports_1 = externalImports; _i < externalImports_1.length; _i++) { + var externalImport = externalImports_1[_i]; + var externalModuleName = ts.getExternalModuleNameLiteral(externalImport, currentSourceFile, host, resolver, compilerOptions); + if (externalModuleName) { + var text = externalModuleName.text; + var groupIndex = groupIndices.get(text); + if (groupIndex !== undefined) { + // deduplicate/group entries in dependency list by the dependency name + dependencyGroups[groupIndex].externalImports.push(externalImport); + } + else { + groupIndices.set(text, dependencyGroups.length); + dependencyGroups.push({ + name: externalModuleName, + externalImports: [externalImport] + }); + } + } + } + return dependencyGroups; + } + /** + * Adds the statements for the module body function for the source file. + * + * @param node The source file for the module. + * @param dependencyGroups The grouped dependencies of the module. + */ + function createSystemModuleBody(node, dependencyGroups) { + // Shape of the body in system modules: + // + // function (exports) { + // + // + // + // return { + // setters: [ + // + // ], + // execute: function() { + // + // } + // } + // + // } + // + // i.e: + // + // import {x} from 'file1' + // var y = 1; + // export function foo() { return y + x(); } + // console.log(y); + // + // Will be transformed to: + // + // function(exports) { + // function foo() { return y + file_1.x(); } + // exports("foo", foo); + // var file_1, y; + // return { + // setters: [ + // function(v) { file_1 = v } + // ], + // execute(): function() { + // y = 1; + // console.log(y); + // } + // }; + // } + var statements = []; + // We start a new lexical environment in this function body, but *not* in the + // body of the execute function. This allows us to emit temporary declarations + // only in the outer module body and not in the inner one. + startLexicalEnvironment(); + // Add any prologue directives. + var ensureUseStrict = ts.getStrictOptionValue(compilerOptions, "alwaysStrict") || (!compilerOptions.noImplicitUseStrict && ts.isExternalModule(currentSourceFile)); + var statementOffset = ts.addPrologue(statements, node.statements, ensureUseStrict, sourceElementVisitor); + // var __moduleName = context_1 && context_1.id; + statements.push(ts.createVariableStatement( + /*modifiers*/ undefined, ts.createVariableDeclarationList([ + ts.createVariableDeclaration("__moduleName", + /*type*/ undefined, ts.createLogicalAnd(contextObject, ts.createPropertyAccess(contextObject, "id"))) + ]))); + // Visit the synthetic external helpers import declaration if present + ts.visitNode(moduleInfo.externalHelpersImportDeclaration, sourceElementVisitor, ts.isStatement); + // Visit the statements of the source file, emitting any transformations into + // the `executeStatements` array. We do this *before* we fill the `setters` array + // as we both emit transformations as well as aggregate some data used when creating + // setters. This allows us to reduce the number of times we need to loop through the + // statements of the source file. + var executeStatements = ts.visitNodes(node.statements, sourceElementVisitor, ts.isStatement, statementOffset); + // Emit early exports for function declarations. + ts.addRange(statements, hoistedStatements); + // We emit hoisted variables early to align roughly with our previous emit output. + // Two key differences in this approach are: + // - Temporary variables will appear at the top rather than at the bottom of the file + ts.insertStatementsAfterStandardPrologue(statements, endLexicalEnvironment()); + var exportStarFunction = addExportStarIfNeeded(statements); // TODO: GH#18217 + var modifiers = node.transformFlags & 524288 /* ContainsAwait */ ? + ts.createModifiersFromModifierFlags(256 /* Async */) : + undefined; + var moduleObject = ts.createObjectLiteral([ + ts.createPropertyAssignment("setters", createSettersArray(exportStarFunction, dependencyGroups)), + ts.createPropertyAssignment("execute", ts.createFunctionExpression(modifiers, + /*asteriskToken*/ undefined, + /*name*/ undefined, + /*typeParameters*/ undefined, + /*parameters*/ [], + /*type*/ undefined, ts.createBlock(executeStatements, /*multiLine*/ true))) + ]); + moduleObject.multiLine = true; + statements.push(ts.createReturn(moduleObject)); + return ts.createBlock(statements, /*multiLine*/ true); + } + /** + * Adds an exportStar function to a statement list if it is needed for the file. + * + * @param statements A statement list. + */ + function addExportStarIfNeeded(statements) { + if (!moduleInfo.hasExportStarsToExportValues) { + return; + } + // when resolving exports local exported entries/indirect exported entries in the module + // should always win over entries with similar names that were added via star exports + // to support this we store names of local/indirect exported entries in a set. + // this set is used to filter names brought by star expors. + // local names set should only be added if we have anything exported + if (!moduleInfo.exportedNames && moduleInfo.exportSpecifiers.size === 0) { + // no exported declarations (export var ...) or export specifiers (export {x}) + // check if we have any non star export declarations. + var hasExportDeclarationWithExportClause = false; + for (var _i = 0, _a = moduleInfo.externalImports; _i < _a.length; _i++) { + var externalImport = _a[_i]; + if (externalImport.kind === 260 /* ExportDeclaration */ && externalImport.exportClause) { + hasExportDeclarationWithExportClause = true; + break; + } + } + if (!hasExportDeclarationWithExportClause) { + // we still need to emit exportStar helper + var exportStarFunction_1 = createExportStarFunction(/*localNames*/ undefined); + statements.push(exportStarFunction_1); + return exportStarFunction_1.name; + } + } + var exportedNames = []; + if (moduleInfo.exportedNames) { + for (var _b = 0, _c = moduleInfo.exportedNames; _b < _c.length; _b++) { + var exportedLocalName = _c[_b]; + if (exportedLocalName.escapedText === "default") { + continue; + } + // write name of exported declaration, i.e 'export var x...' + exportedNames.push(ts.createPropertyAssignment(ts.createLiteral(exportedLocalName), ts.createTrue())); + } + } + for (var _d = 0, _e = moduleInfo.externalImports; _d < _e.length; _d++) { + var externalImport = _e[_d]; + if (externalImport.kind !== 260 /* ExportDeclaration */) { + continue; + } + if (!externalImport.exportClause) { + // export * from ... + continue; + } + if (ts.isNamedExports(externalImport.exportClause)) { + for (var _f = 0, _g = externalImport.exportClause.elements; _f < _g.length; _f++) { + var element = _g[_f]; + // write name of indirectly exported entry, i.e. 'export {x} from ...' + exportedNames.push(ts.createPropertyAssignment(ts.createLiteral(ts.idText(element.name || element.propertyName)), ts.createTrue())); + } + } + else { + exportedNames.push(ts.createPropertyAssignment(ts.createLiteral(ts.idText(externalImport.exportClause.name)), ts.createTrue())); + } + } + var exportedNamesStorageRef = ts.createUniqueName("exportedNames"); + statements.push(ts.createVariableStatement( + /*modifiers*/ undefined, ts.createVariableDeclarationList([ + ts.createVariableDeclaration(exportedNamesStorageRef, + /*type*/ undefined, ts.createObjectLiteral(exportedNames, /*multiline*/ true)) + ]))); + var exportStarFunction = createExportStarFunction(exportedNamesStorageRef); + statements.push(exportStarFunction); + return exportStarFunction.name; + } + /** + * Creates an exportStar function for the file, with an optional set of excluded local + * names. + * + * @param localNames An optional reference to an object containing a set of excluded local + * names. + */ + function createExportStarFunction(localNames) { + var exportStarFunction = ts.createUniqueName("exportStar"); + var m = ts.createIdentifier("m"); + var n = ts.createIdentifier("n"); + var exports = ts.createIdentifier("exports"); + var condition = ts.createStrictInequality(n, ts.createLiteral("default")); + if (localNames) { + condition = ts.createLogicalAnd(condition, ts.createLogicalNot(ts.createCall(ts.createPropertyAccess(localNames, "hasOwnProperty"), + /*typeArguments*/ undefined, [n]))); + } + return ts.createFunctionDeclaration( + /*decorators*/ undefined, + /*modifiers*/ undefined, + /*asteriskToken*/ undefined, exportStarFunction, + /*typeParameters*/ undefined, [ts.createParameter(/*decorators*/ undefined, /*modifiers*/ undefined, /*dotDotDotToken*/ undefined, m)], + /*type*/ undefined, ts.createBlock([ + ts.createVariableStatement( + /*modifiers*/ undefined, ts.createVariableDeclarationList([ + ts.createVariableDeclaration(exports, + /*type*/ undefined, ts.createObjectLiteral([])) + ])), + ts.createForIn(ts.createVariableDeclarationList([ + ts.createVariableDeclaration(n, /*type*/ undefined) + ]), m, ts.createBlock([ + ts.setEmitFlags(ts.createIf(condition, ts.createExpressionStatement(ts.createAssignment(ts.createElementAccess(exports, n), ts.createElementAccess(m, n)))), 1 /* SingleLine */) + ])), + ts.createExpressionStatement(ts.createCall(exportFunction, + /*typeArguments*/ undefined, [exports])) + ], /*multiline*/ true)); + } + /** + * Creates an array setter callbacks for each dependency group. + * + * @param exportStarFunction A reference to an exportStarFunction for the file. + * @param dependencyGroups An array of grouped dependencies. + */ + function createSettersArray(exportStarFunction, dependencyGroups) { + var setters = []; + for (var _i = 0, dependencyGroups_1 = dependencyGroups; _i < dependencyGroups_1.length; _i++) { + var group_2 = dependencyGroups_1[_i]; + // derive a unique name for parameter from the first named entry in the group + var localName = ts.forEach(group_2.externalImports, function (i) { return ts.getLocalNameForExternalImport(i, currentSourceFile); }); + var parameterName = localName ? ts.getGeneratedNameForNode(localName) : ts.createUniqueName(""); + var statements = []; + for (var _a = 0, _b = group_2.externalImports; _a < _b.length; _a++) { + var entry = _b[_a]; + var importVariableName = ts.getLocalNameForExternalImport(entry, currentSourceFile); // TODO: GH#18217 + switch (entry.kind) { + case 254 /* ImportDeclaration */: + if (!entry.importClause) { + // 'import "..."' case + // module is imported only for side-effects, no emit required + break; + } + // falls through + case 253 /* ImportEqualsDeclaration */: + ts.Debug.assert(importVariableName !== undefined); + // save import into the local + statements.push(ts.createExpressionStatement(ts.createAssignment(importVariableName, parameterName))); + break; + case 260 /* ExportDeclaration */: + ts.Debug.assert(importVariableName !== undefined); + if (entry.exportClause) { + if (ts.isNamedExports(entry.exportClause)) { + // export {a, b as c} from 'foo' + // + // emit as: + // + // exports_({ + // "a": _["a"], + // "c": _["b"] + // }); + var properties = []; + for (var _c = 0, _d = entry.exportClause.elements; _c < _d.length; _c++) { + var e = _d[_c]; + properties.push(ts.createPropertyAssignment(ts.createLiteral(ts.idText(e.name)), ts.createElementAccess(parameterName, ts.createLiteral(ts.idText(e.propertyName || e.name))))); + } + statements.push(ts.createExpressionStatement(ts.createCall(exportFunction, + /*typeArguments*/ undefined, [ts.createObjectLiteral(properties, /*multiline*/ true)]))); + } + else { + statements.push(ts.createExpressionStatement(ts.createCall(exportFunction, + /*typeArguments*/ undefined, [ + ts.createLiteral(ts.idText(entry.exportClause.name)), + parameterName + ]))); + } + } + else { + // export * from 'foo' + // + // emit as: + // + // exportStar(foo_1_1); + statements.push(ts.createExpressionStatement(ts.createCall(exportStarFunction, + /*typeArguments*/ undefined, [parameterName]))); + } + break; + } + } + setters.push(ts.createFunctionExpression( + /*modifiers*/ undefined, + /*asteriskToken*/ undefined, + /*name*/ undefined, + /*typeParameters*/ undefined, [ts.createParameter(/*decorators*/ undefined, /*modifiers*/ undefined, /*dotDotDotToken*/ undefined, parameterName)], + /*type*/ undefined, ts.createBlock(statements, /*multiLine*/ true))); + } + return ts.createArrayLiteral(setters, /*multiLine*/ true); + } + // + // Top-level Source Element Visitors + // + /** + * Visit source elements at the top-level of a module. + * + * @param node The node to visit. + */ + function sourceElementVisitor(node) { + switch (node.kind) { + case 254 /* ImportDeclaration */: + return visitImportDeclaration(node); + case 253 /* ImportEqualsDeclaration */: + return visitImportEqualsDeclaration(node); + case 260 /* ExportDeclaration */: + return visitExportDeclaration(node); + case 259 /* ExportAssignment */: + return visitExportAssignment(node); + default: + return nestedElementVisitor(node); + } + } + /** + * Visits an ImportDeclaration node. + * + * @param node The node to visit. + */ + function visitImportDeclaration(node) { + var statements; + if (node.importClause) { + hoistVariableDeclaration(ts.getLocalNameForExternalImport(node, currentSourceFile)); // TODO: GH#18217 + } + if (hasAssociatedEndOfDeclarationMarker(node)) { + // Defer exports until we encounter an EndOfDeclarationMarker node + var id = ts.getOriginalNodeId(node); + deferredExports[id] = appendExportsOfImportDeclaration(deferredExports[id], node); + } + else { + statements = appendExportsOfImportDeclaration(statements, node); + } + return ts.singleOrMany(statements); + } + function visitExportDeclaration(node) { + ts.Debug.assertIsDefined(node); + return undefined; + } + /** + * Visits an ImportEqualsDeclaration node. + * + * @param node The node to visit. + */ + function visitImportEqualsDeclaration(node) { + ts.Debug.assert(ts.isExternalModuleImportEqualsDeclaration(node), "import= for internal module references should be handled in an earlier transformer."); + var statements; + hoistVariableDeclaration(ts.getLocalNameForExternalImport(node, currentSourceFile)); // TODO: GH#18217 + if (hasAssociatedEndOfDeclarationMarker(node)) { + // Defer exports until we encounter an EndOfDeclarationMarker node + var id = ts.getOriginalNodeId(node); + deferredExports[id] = appendExportsOfImportEqualsDeclaration(deferredExports[id], node); + } + else { + statements = appendExportsOfImportEqualsDeclaration(statements, node); + } + return ts.singleOrMany(statements); + } + /** + * Visits an ExportAssignment node. + * + * @param node The node to visit. + */ + function visitExportAssignment(node) { + if (node.isExportEquals) { + // Elide `export=` as it is illegal in a SystemJS module. + return undefined; + } + var expression = ts.visitNode(node.expression, destructuringAndImportCallVisitor, ts.isExpression); + var original = node.original; + if (original && hasAssociatedEndOfDeclarationMarker(original)) { + // Defer exports until we encounter an EndOfDeclarationMarker node + var id = ts.getOriginalNodeId(node); + deferredExports[id] = appendExportStatement(deferredExports[id], ts.createIdentifier("default"), expression, /*allowComments*/ true); + } + else { + return createExportStatement(ts.createIdentifier("default"), expression, /*allowComments*/ true); + } + } + /** + * Visits a FunctionDeclaration, hoisting it to the outer module body function. + * + * @param node The node to visit. + */ + function visitFunctionDeclaration(node) { + if (ts.hasModifier(node, 1 /* Export */)) { + hoistedStatements = ts.append(hoistedStatements, ts.updateFunctionDeclaration(node, node.decorators, ts.visitNodes(node.modifiers, modifierVisitor, ts.isModifier), node.asteriskToken, ts.getDeclarationName(node, /*allowComments*/ true, /*allowSourceMaps*/ true), + /*typeParameters*/ undefined, ts.visitNodes(node.parameters, destructuringAndImportCallVisitor, ts.isParameterDeclaration), + /*type*/ undefined, ts.visitNode(node.body, destructuringAndImportCallVisitor, ts.isBlock))); + } + else { + hoistedStatements = ts.append(hoistedStatements, ts.visitEachChild(node, destructuringAndImportCallVisitor, context)); + } + if (hasAssociatedEndOfDeclarationMarker(node)) { + // Defer exports until we encounter an EndOfDeclarationMarker node + var id = ts.getOriginalNodeId(node); + deferredExports[id] = appendExportsOfHoistedDeclaration(deferredExports[id], node); + } + else { + hoistedStatements = appendExportsOfHoistedDeclaration(hoistedStatements, node); + } + return undefined; + } + /** + * Visits a ClassDeclaration, hoisting its name to the outer module body function. + * + * @param node The node to visit. + */ + function visitClassDeclaration(node) { + var statements; + // Hoist the name of the class declaration to the outer module body function. + var name = ts.getLocalName(node); + hoistVariableDeclaration(name); + // Rewrite the class declaration into an assignment of a class expression. + statements = ts.append(statements, ts.setTextRange(ts.createExpressionStatement(ts.createAssignment(name, ts.setTextRange(ts.createClassExpression( + /*modifiers*/ undefined, node.name, + /*typeParameters*/ undefined, ts.visitNodes(node.heritageClauses, destructuringAndImportCallVisitor, ts.isHeritageClause), ts.visitNodes(node.members, destructuringAndImportCallVisitor, ts.isClassElement)), node))), node)); + if (hasAssociatedEndOfDeclarationMarker(node)) { + // Defer exports until we encounter an EndOfDeclarationMarker node + var id = ts.getOriginalNodeId(node); + deferredExports[id] = appendExportsOfHoistedDeclaration(deferredExports[id], node); + } + else { + statements = appendExportsOfHoistedDeclaration(statements, node); + } + return ts.singleOrMany(statements); + } + /** + * Visits a variable statement, hoisting declared names to the top-level module body. + * Each declaration is rewritten into an assignment expression. + * + * @param node The node to visit. + */ + function visitVariableStatement(node) { + if (!shouldHoistVariableDeclarationList(node.declarationList)) { + return ts.visitNode(node, destructuringAndImportCallVisitor, ts.isStatement); + } + var expressions; + var isExportedDeclaration = ts.hasModifier(node, 1 /* Export */); + var isMarkedDeclaration = hasAssociatedEndOfDeclarationMarker(node); + for (var _i = 0, _a = node.declarationList.declarations; _i < _a.length; _i++) { + var variable = _a[_i]; + if (variable.initializer) { + expressions = ts.append(expressions, transformInitializedVariable(variable, isExportedDeclaration && !isMarkedDeclaration)); + } + else { + hoistBindingElement(variable); + } + } + var statements; + if (expressions) { + statements = ts.append(statements, ts.setTextRange(ts.createExpressionStatement(ts.inlineExpressions(expressions)), node)); + } + if (isMarkedDeclaration) { + // Defer exports until we encounter an EndOfDeclarationMarker node + var id = ts.getOriginalNodeId(node); + deferredExports[id] = appendExportsOfVariableStatement(deferredExports[id], node, isExportedDeclaration); + } + else { + statements = appendExportsOfVariableStatement(statements, node, /*exportSelf*/ false); + } + return ts.singleOrMany(statements); + } + /** + * Hoists the declared names of a VariableDeclaration or BindingElement. + * + * @param node The declaration to hoist. + */ + function hoistBindingElement(node) { + if (ts.isBindingPattern(node.name)) { + for (var _i = 0, _a = node.name.elements; _i < _a.length; _i++) { + var element = _a[_i]; + if (!ts.isOmittedExpression(element)) { + hoistBindingElement(element); + } + } + } + else { + hoistVariableDeclaration(ts.getSynthesizedClone(node.name)); + } + } + /** + * Determines whether a VariableDeclarationList should be hoisted. + * + * @param node The node to test. + */ + function shouldHoistVariableDeclarationList(node) { + // hoist only non-block scoped declarations or block scoped declarations parented by source file + return (ts.getEmitFlags(node) & 2097152 /* NoHoisting */) === 0 + && (enclosingBlockScopedContainer.kind === 290 /* SourceFile */ + || (ts.getOriginalNode(node).flags & 3 /* BlockScoped */) === 0); + } + /** + * Transform an initialized variable declaration into an expression. + * + * @param node The node to transform. + * @param isExportedDeclaration A value indicating whether the variable is exported. + */ + function transformInitializedVariable(node, isExportedDeclaration) { + var createAssignment = isExportedDeclaration ? createExportedVariableAssignment : createNonExportedVariableAssignment; + return ts.isBindingPattern(node.name) + ? ts.flattenDestructuringAssignment(node, destructuringAndImportCallVisitor, context, 0 /* All */, + /*needsValue*/ false, createAssignment) + : node.initializer ? createAssignment(node.name, ts.visitNode(node.initializer, destructuringAndImportCallVisitor, ts.isExpression)) : node.name; + } + /** + * Creates an assignment expression for an exported variable declaration. + * + * @param name The name of the variable. + * @param value The value of the variable's initializer. + * @param location The source map location for the assignment. + */ + function createExportedVariableAssignment(name, value, location) { + return createVariableAssignment(name, value, location, /*isExportedDeclaration*/ true); + } + /** + * Creates an assignment expression for a non-exported variable declaration. + * + * @param name The name of the variable. + * @param value The value of the variable's initializer. + * @param location The source map location for the assignment. + */ + function createNonExportedVariableAssignment(name, value, location) { + return createVariableAssignment(name, value, location, /*isExportedDeclaration*/ false); + } + /** + * Creates an assignment expression for a variable declaration. + * + * @param name The name of the variable. + * @param value The value of the variable's initializer. + * @param location The source map location for the assignment. + * @param isExportedDeclaration A value indicating whether the variable is exported. + */ + function createVariableAssignment(name, value, location, isExportedDeclaration) { + hoistVariableDeclaration(ts.getSynthesizedClone(name)); + return isExportedDeclaration + ? createExportExpression(name, preventSubstitution(ts.setTextRange(ts.createAssignment(name, value), location))) + : preventSubstitution(ts.setTextRange(ts.createAssignment(name, value), location)); + } + /** + * Visits a MergeDeclarationMarker used as a placeholder for the beginning of a merged + * and transformed declaration. + * + * @param node The node to visit. + */ + function visitMergeDeclarationMarker(node) { + // For an EnumDeclaration or ModuleDeclaration that merges with a preceeding + // declaration we do not emit a leading variable declaration. To preserve the + // begin/end semantics of the declararation and to properly handle exports + // we wrapped the leading variable declaration in a `MergeDeclarationMarker`. + // + // To balance the declaration, we defer the exports of the elided variable + // statement until we visit this declaration's `EndOfDeclarationMarker`. + if (hasAssociatedEndOfDeclarationMarker(node) && node.original.kind === 225 /* VariableStatement */) { + var id = ts.getOriginalNodeId(node); + var isExportedDeclaration = ts.hasModifier(node.original, 1 /* Export */); + deferredExports[id] = appendExportsOfVariableStatement(deferredExports[id], node.original, isExportedDeclaration); + } + return node; + } + /** + * Determines whether a node has an associated EndOfDeclarationMarker. + * + * @param node The node to test. + */ + function hasAssociatedEndOfDeclarationMarker(node) { + return (ts.getEmitFlags(node) & 4194304 /* HasEndOfDeclarationMarker */) !== 0; + } + /** + * Visits a DeclarationMarker used as a placeholder for the end of a transformed + * declaration. + * + * @param node The node to visit. + */ + function visitEndOfDeclarationMarker(node) { + // For some transformations we emit an `EndOfDeclarationMarker` to mark the actual + // end of the transformed declaration. We use this marker to emit any deferred exports + // of the declaration. + var id = ts.getOriginalNodeId(node); + var statements = deferredExports[id]; + if (statements) { + delete deferredExports[id]; + return ts.append(statements, node); + } + else { + var original = ts.getOriginalNode(node); + if (ts.isModuleOrEnumDeclaration(original)) { + return ts.append(appendExportsOfDeclaration(statements, original), node); + } + } + return node; + } + /** + * Appends the exports of an ImportDeclaration to a statement list, returning the + * statement list. + * + * @param statements A statement list to which the down-level export statements are to be + * appended. If `statements` is `undefined`, a new array is allocated if statements are + * appended. + * @param decl The declaration whose exports are to be recorded. + */ + function appendExportsOfImportDeclaration(statements, decl) { + if (moduleInfo.exportEquals) { + return statements; + } + var importClause = decl.importClause; + if (!importClause) { + return statements; + } + if (importClause.name) { + statements = appendExportsOfDeclaration(statements, importClause); + } + var namedBindings = importClause.namedBindings; + if (namedBindings) { + switch (namedBindings.kind) { + case 256 /* NamespaceImport */: + statements = appendExportsOfDeclaration(statements, namedBindings); + break; + case 257 /* NamedImports */: + for (var _i = 0, _a = namedBindings.elements; _i < _a.length; _i++) { + var importBinding = _a[_i]; + statements = appendExportsOfDeclaration(statements, importBinding); + } + break; + } + } + return statements; + } + /** + * Appends the export of an ImportEqualsDeclaration to a statement list, returning the + * statement list. + * + * @param statements A statement list to which the down-level export statements are to be + * appended. If `statements` is `undefined`, a new array is allocated if statements are + * appended. + * @param decl The declaration whose exports are to be recorded. + */ + function appendExportsOfImportEqualsDeclaration(statements, decl) { + if (moduleInfo.exportEquals) { + return statements; + } + return appendExportsOfDeclaration(statements, decl); + } + /** + * Appends the exports of a VariableStatement to a statement list, returning the statement + * list. + * + * @param statements A statement list to which the down-level export statements are to be + * appended. If `statements` is `undefined`, a new array is allocated if statements are + * appended. + * @param node The VariableStatement whose exports are to be recorded. + * @param exportSelf A value indicating whether to also export each VariableDeclaration of + * `nodes` declaration list. + */ + function appendExportsOfVariableStatement(statements, node, exportSelf) { + if (moduleInfo.exportEquals) { + return statements; + } + for (var _i = 0, _a = node.declarationList.declarations; _i < _a.length; _i++) { + var decl = _a[_i]; + if (decl.initializer || exportSelf) { + statements = appendExportsOfBindingElement(statements, decl, exportSelf); + } + } + return statements; + } + /** + * Appends the exports of a VariableDeclaration or BindingElement to a statement list, + * returning the statement list. + * + * @param statements A statement list to which the down-level export statements are to be + * appended. If `statements` is `undefined`, a new array is allocated if statements are + * appended. + * @param decl The declaration whose exports are to be recorded. + * @param exportSelf A value indicating whether to also export the declaration itself. + */ + function appendExportsOfBindingElement(statements, decl, exportSelf) { + if (moduleInfo.exportEquals) { + return statements; + } + if (ts.isBindingPattern(decl.name)) { + for (var _i = 0, _a = decl.name.elements; _i < _a.length; _i++) { + var element = _a[_i]; + if (!ts.isOmittedExpression(element)) { + statements = appendExportsOfBindingElement(statements, element, exportSelf); + } + } + } + else if (!ts.isGeneratedIdentifier(decl.name)) { + var excludeName = void 0; + if (exportSelf) { + statements = appendExportStatement(statements, decl.name, ts.getLocalName(decl)); + excludeName = ts.idText(decl.name); + } + statements = appendExportsOfDeclaration(statements, decl, excludeName); + } + return statements; + } + /** + * Appends the exports of a ClassDeclaration or FunctionDeclaration to a statement list, + * returning the statement list. + * + * @param statements A statement list to which the down-level export statements are to be + * appended. If `statements` is `undefined`, a new array is allocated if statements are + * appended. + * @param decl The declaration whose exports are to be recorded. + */ + function appendExportsOfHoistedDeclaration(statements, decl) { + if (moduleInfo.exportEquals) { + return statements; + } + var excludeName; + if (ts.hasModifier(decl, 1 /* Export */)) { + var exportName = ts.hasModifier(decl, 512 /* Default */) ? ts.createLiteral("default") : decl.name; + statements = appendExportStatement(statements, exportName, ts.getLocalName(decl)); + excludeName = ts.getTextOfIdentifierOrLiteral(exportName); + } + if (decl.name) { + statements = appendExportsOfDeclaration(statements, decl, excludeName); + } + return statements; + } + /** + * Appends the exports of a declaration to a statement list, returning the statement list. + * + * @param statements A statement list to which the down-level export statements are to be + * appended. If `statements` is `undefined`, a new array is allocated if statements are + * appended. + * @param decl The declaration to export. + * @param excludeName An optional name to exclude from exports. + */ + function appendExportsOfDeclaration(statements, decl, excludeName) { + if (moduleInfo.exportEquals) { + return statements; + } + var name = ts.getDeclarationName(decl); + var exportSpecifiers = moduleInfo.exportSpecifiers.get(ts.idText(name)); + if (exportSpecifiers) { + for (var _i = 0, exportSpecifiers_2 = exportSpecifiers; _i < exportSpecifiers_2.length; _i++) { + var exportSpecifier = exportSpecifiers_2[_i]; + if (exportSpecifier.name.escapedText !== excludeName) { + statements = appendExportStatement(statements, exportSpecifier.name, name); + } + } + } + return statements; + } + /** + * Appends the down-level representation of an export to a statement list, returning the + * statement list. + * + * @param statements A statement list to which the down-level export statements are to be + * appended. If `statements` is `undefined`, a new array is allocated if statements are + * appended. + * @param exportName The name of the export. + * @param expression The expression to export. + * @param allowComments Whether to allow comments on the export. + */ + function appendExportStatement(statements, exportName, expression, allowComments) { + statements = ts.append(statements, createExportStatement(exportName, expression, allowComments)); + return statements; + } + /** + * Creates a call to the current file's export function to export a value. + * + * @param name The bound name of the export. + * @param value The exported value. + * @param allowComments An optional value indicating whether to emit comments for the statement. + */ + function createExportStatement(name, value, allowComments) { + var statement = ts.createExpressionStatement(createExportExpression(name, value)); + ts.startOnNewLine(statement); + if (!allowComments) { + ts.setEmitFlags(statement, 1536 /* NoComments */); + } + return statement; + } + /** + * Creates a call to the current file's export function to export a value. + * + * @param name The bound name of the export. + * @param value The exported value. + */ + function createExportExpression(name, value) { + var exportName = ts.isIdentifier(name) ? ts.createLiteral(name) : name; + ts.setEmitFlags(value, ts.getEmitFlags(value) | 1536 /* NoComments */); + return ts.setCommentRange(ts.createCall(exportFunction, /*typeArguments*/ undefined, [exportName, value]), value); + } + // + // Top-Level or Nested Source Element Visitors + // + /** + * Visit nested elements at the top-level of a module. + * + * @param node The node to visit. + */ + function nestedElementVisitor(node) { + switch (node.kind) { + case 225 /* VariableStatement */: + return visitVariableStatement(node); + case 244 /* FunctionDeclaration */: + return visitFunctionDeclaration(node); + case 245 /* ClassDeclaration */: + return visitClassDeclaration(node); + case 230 /* ForStatement */: + return visitForStatement(node); + case 231 /* ForInStatement */: + return visitForInStatement(node); + case 232 /* ForOfStatement */: + return visitForOfStatement(node); + case 228 /* DoStatement */: + return visitDoStatement(node); + case 229 /* WhileStatement */: + return visitWhileStatement(node); + case 238 /* LabeledStatement */: + return visitLabeledStatement(node); + case 236 /* WithStatement */: + return visitWithStatement(node); + case 237 /* SwitchStatement */: + return visitSwitchStatement(node); + case 251 /* CaseBlock */: + return visitCaseBlock(node); + case 277 /* CaseClause */: + return visitCaseClause(node); + case 278 /* DefaultClause */: + return visitDefaultClause(node); + case 240 /* TryStatement */: + return visitTryStatement(node); + case 280 /* CatchClause */: + return visitCatchClause(node); + case 223 /* Block */: + return visitBlock(node); + case 328 /* MergeDeclarationMarker */: + return visitMergeDeclarationMarker(node); + case 329 /* EndOfDeclarationMarker */: + return visitEndOfDeclarationMarker(node); + default: + return destructuringAndImportCallVisitor(node); + } + } + /** + * Visits the body of a ForStatement to hoist declarations. + * + * @param node The node to visit. + */ + function visitForStatement(node) { + var savedEnclosingBlockScopedContainer = enclosingBlockScopedContainer; + enclosingBlockScopedContainer = node; + node = ts.updateFor(node, node.initializer && visitForInitializer(node.initializer), ts.visitNode(node.condition, destructuringAndImportCallVisitor, ts.isExpression), ts.visitNode(node.incrementor, destructuringAndImportCallVisitor, ts.isExpression), ts.visitNode(node.statement, nestedElementVisitor, ts.isStatement)); + enclosingBlockScopedContainer = savedEnclosingBlockScopedContainer; + return node; + } + /** + * Visits the body of a ForInStatement to hoist declarations. + * + * @param node The node to visit. + */ + function visitForInStatement(node) { + var savedEnclosingBlockScopedContainer = enclosingBlockScopedContainer; + enclosingBlockScopedContainer = node; + node = ts.updateForIn(node, visitForInitializer(node.initializer), ts.visitNode(node.expression, destructuringAndImportCallVisitor, ts.isExpression), ts.visitNode(node.statement, nestedElementVisitor, ts.isStatement, ts.liftToBlock)); + enclosingBlockScopedContainer = savedEnclosingBlockScopedContainer; + return node; + } + /** + * Visits the body of a ForOfStatement to hoist declarations. + * + * @param node The node to visit. + */ + function visitForOfStatement(node) { + var savedEnclosingBlockScopedContainer = enclosingBlockScopedContainer; + enclosingBlockScopedContainer = node; + node = ts.updateForOf(node, node.awaitModifier, visitForInitializer(node.initializer), ts.visitNode(node.expression, destructuringAndImportCallVisitor, ts.isExpression), ts.visitNode(node.statement, nestedElementVisitor, ts.isStatement, ts.liftToBlock)); + enclosingBlockScopedContainer = savedEnclosingBlockScopedContainer; + return node; + } + /** + * Determines whether to hoist the initializer of a ForStatement, ForInStatement, or + * ForOfStatement. + * + * @param node The node to test. + */ + function shouldHoistForInitializer(node) { + return ts.isVariableDeclarationList(node) + && shouldHoistVariableDeclarationList(node); + } + /** + * Visits the initializer of a ForStatement, ForInStatement, or ForOfStatement + * + * @param node The node to visit. + */ + function visitForInitializer(node) { + if (shouldHoistForInitializer(node)) { + var expressions = void 0; + for (var _i = 0, _a = node.declarations; _i < _a.length; _i++) { + var variable = _a[_i]; + expressions = ts.append(expressions, transformInitializedVariable(variable, /*isExportedDeclaration*/ false)); + if (!variable.initializer) { + hoistBindingElement(variable); + } + } + return expressions ? ts.inlineExpressions(expressions) : ts.createOmittedExpression(); + } + else { + return ts.visitEachChild(node, nestedElementVisitor, context); + } + } + /** + * Visits the body of a DoStatement to hoist declarations. + * + * @param node The node to visit. + */ + function visitDoStatement(node) { + return ts.updateDo(node, ts.visitNode(node.statement, nestedElementVisitor, ts.isStatement, ts.liftToBlock), ts.visitNode(node.expression, destructuringAndImportCallVisitor, ts.isExpression)); + } + /** + * Visits the body of a WhileStatement to hoist declarations. + * + * @param node The node to visit. + */ + function visitWhileStatement(node) { + return ts.updateWhile(node, ts.visitNode(node.expression, destructuringAndImportCallVisitor, ts.isExpression), ts.visitNode(node.statement, nestedElementVisitor, ts.isStatement, ts.liftToBlock)); + } + /** + * Visits the body of a LabeledStatement to hoist declarations. + * + * @param node The node to visit. + */ + function visitLabeledStatement(node) { + return ts.updateLabel(node, node.label, ts.visitNode(node.statement, nestedElementVisitor, ts.isStatement, ts.liftToBlock)); + } + /** + * Visits the body of a WithStatement to hoist declarations. + * + * @param node The node to visit. + */ + function visitWithStatement(node) { + return ts.updateWith(node, ts.visitNode(node.expression, destructuringAndImportCallVisitor, ts.isExpression), ts.visitNode(node.statement, nestedElementVisitor, ts.isStatement, ts.liftToBlock)); + } + /** + * Visits the body of a SwitchStatement to hoist declarations. + * + * @param node The node to visit. + */ + function visitSwitchStatement(node) { + return ts.updateSwitch(node, ts.visitNode(node.expression, destructuringAndImportCallVisitor, ts.isExpression), ts.visitNode(node.caseBlock, nestedElementVisitor, ts.isCaseBlock)); + } + /** + * Visits the body of a CaseBlock to hoist declarations. + * + * @param node The node to visit. + */ + function visitCaseBlock(node) { + var savedEnclosingBlockScopedContainer = enclosingBlockScopedContainer; + enclosingBlockScopedContainer = node; + node = ts.updateCaseBlock(node, ts.visitNodes(node.clauses, nestedElementVisitor, ts.isCaseOrDefaultClause)); + enclosingBlockScopedContainer = savedEnclosingBlockScopedContainer; + return node; + } + /** + * Visits the body of a CaseClause to hoist declarations. + * + * @param node The node to visit. + */ + function visitCaseClause(node) { + return ts.updateCaseClause(node, ts.visitNode(node.expression, destructuringAndImportCallVisitor, ts.isExpression), ts.visitNodes(node.statements, nestedElementVisitor, ts.isStatement)); + } + /** + * Visits the body of a DefaultClause to hoist declarations. + * + * @param node The node to visit. + */ + function visitDefaultClause(node) { + return ts.visitEachChild(node, nestedElementVisitor, context); + } + /** + * Visits the body of a TryStatement to hoist declarations. + * + * @param node The node to visit. + */ + function visitTryStatement(node) { + return ts.visitEachChild(node, nestedElementVisitor, context); + } + /** + * Visits the body of a CatchClause to hoist declarations. + * + * @param node The node to visit. + */ + function visitCatchClause(node) { + var savedEnclosingBlockScopedContainer = enclosingBlockScopedContainer; + enclosingBlockScopedContainer = node; + node = ts.updateCatchClause(node, node.variableDeclaration, ts.visitNode(node.block, nestedElementVisitor, ts.isBlock)); + enclosingBlockScopedContainer = savedEnclosingBlockScopedContainer; + return node; + } + /** + * Visits the body of a Block to hoist declarations. + * + * @param node The node to visit. + */ + function visitBlock(node) { + var savedEnclosingBlockScopedContainer = enclosingBlockScopedContainer; + enclosingBlockScopedContainer = node; + node = ts.visitEachChild(node, nestedElementVisitor, context); + enclosingBlockScopedContainer = savedEnclosingBlockScopedContainer; + return node; + } + // + // Destructuring Assignment Visitors + // + /** + * Visit nodes to flatten destructuring assignments to exported symbols. + * + * @param node The node to visit. + */ + function destructuringAndImportCallVisitor(node) { + if (ts.isDestructuringAssignment(node)) { + return visitDestructuringAssignment(node); + } + else if (ts.isImportCall(node)) { + return visitImportCallExpression(node); + } + else if ((node.transformFlags & 1024 /* ContainsDestructuringAssignment */) || (node.transformFlags & 2097152 /* ContainsDynamicImport */)) { + return ts.visitEachChild(node, destructuringAndImportCallVisitor, context); + } + else { + return node; + } + } + function visitImportCallExpression(node) { + // import("./blah") + // emit as + // System.register([], function (_export, _context) { + // return { + // setters: [], + // execute: () => { + // _context.import('./blah'); + // } + // }; + // }); + return ts.createCall(ts.createPropertyAccess(contextObject, ts.createIdentifier("import")), + /*typeArguments*/ undefined, ts.some(node.arguments) ? [ts.visitNode(node.arguments[0], destructuringAndImportCallVisitor)] : []); + } + /** + * Visits a DestructuringAssignment to flatten destructuring to exported symbols. + * + * @param node The node to visit. + */ + function visitDestructuringAssignment(node) { + if (hasExportedReferenceInDestructuringTarget(node.left)) { + return ts.flattenDestructuringAssignment(node, destructuringAndImportCallVisitor, context, 0 /* All */, + /*needsValue*/ true); + } + return ts.visitEachChild(node, destructuringAndImportCallVisitor, context); + } + /** + * Determines whether the target of a destructuring assigment refers to an exported symbol. + * + * @param node The destructuring target. + */ + function hasExportedReferenceInDestructuringTarget(node) { + if (ts.isAssignmentExpression(node, /*excludeCompoundAssignment*/ true)) { + return hasExportedReferenceInDestructuringTarget(node.left); + } + else if (ts.isSpreadElement(node)) { + return hasExportedReferenceInDestructuringTarget(node.expression); + } + else if (ts.isObjectLiteralExpression(node)) { + return ts.some(node.properties, hasExportedReferenceInDestructuringTarget); + } + else if (ts.isArrayLiteralExpression(node)) { + return ts.some(node.elements, hasExportedReferenceInDestructuringTarget); + } + else if (ts.isShorthandPropertyAssignment(node)) { + return hasExportedReferenceInDestructuringTarget(node.name); + } + else if (ts.isPropertyAssignment(node)) { + return hasExportedReferenceInDestructuringTarget(node.initializer); + } + else if (ts.isIdentifier(node)) { + var container = resolver.getReferencedExportContainer(node); + return container !== undefined && container.kind === 290 /* SourceFile */; + } + else { + return false; + } + } + // + // Modifier Visitors + // + /** + * Visit nodes to elide module-specific modifiers. + * + * @param node The node to visit. + */ + function modifierVisitor(node) { + switch (node.kind) { + case 89 /* ExportKeyword */: + case 84 /* DefaultKeyword */: + return undefined; + } + return node; + } + // + // Emit Notification + // + /** + * Hook for node emit notifications. + * + * @param hint A hint as to the intended usage of the node. + * @param node The node to emit. + * @param emitCallback A callback used to emit the node in the printer. + */ + function onEmitNode(hint, node, emitCallback) { + if (node.kind === 290 /* SourceFile */) { + var id = ts.getOriginalNodeId(node); + currentSourceFile = node; + moduleInfo = moduleInfoMap[id]; + exportFunction = exportFunctionsMap[id]; + noSubstitution = noSubstitutionMap[id]; + contextObject = contextObjectMap[id]; + if (noSubstitution) { + delete noSubstitutionMap[id]; + } + previousOnEmitNode(hint, node, emitCallback); + currentSourceFile = undefined; + moduleInfo = undefined; + exportFunction = undefined; + contextObject = undefined; + noSubstitution = undefined; + } + else { + previousOnEmitNode(hint, node, emitCallback); + } + } + // + // Substitutions + // + /** + * Hooks node substitutions. + * + * @param hint A hint as to the intended usage of the node. + * @param node The node to substitute. + */ + function onSubstituteNode(hint, node) { + node = previousOnSubstituteNode(hint, node); + if (isSubstitutionPrevented(node)) { + return node; + } + if (hint === 1 /* Expression */) { + return substituteExpression(node); + } + else if (hint === 4 /* Unspecified */) { + return substituteUnspecified(node); + } + return node; + } + /** + * Substitute the node, if necessary. + * + * @param node The node to substitute. + */ + function substituteUnspecified(node) { + switch (node.kind) { + case 282 /* ShorthandPropertyAssignment */: + return substituteShorthandPropertyAssignment(node); + } + return node; + } + /** + * Substitution for a ShorthandPropertyAssignment whose name that may contain an imported or exported symbol. + * + * @param node The node to substitute. + */ + function substituteShorthandPropertyAssignment(node) { + var name = node.name; + if (!ts.isGeneratedIdentifier(name) && !ts.isLocalName(name)) { + var importDeclaration = resolver.getReferencedImportDeclaration(name); + if (importDeclaration) { + if (ts.isImportClause(importDeclaration)) { + return ts.setTextRange(ts.createPropertyAssignment(ts.getSynthesizedClone(name), ts.createPropertyAccess(ts.getGeneratedNameForNode(importDeclaration.parent), ts.createIdentifier("default"))), + /*location*/ node); + } + else if (ts.isImportSpecifier(importDeclaration)) { + return ts.setTextRange(ts.createPropertyAssignment(ts.getSynthesizedClone(name), ts.createPropertyAccess(ts.getGeneratedNameForNode(importDeclaration.parent.parent.parent), ts.getSynthesizedClone(importDeclaration.propertyName || importDeclaration.name))), + /*location*/ node); + } + } + } + return node; + } + /** + * Substitute the expression, if necessary. + * + * @param node The node to substitute. + */ + function substituteExpression(node) { + switch (node.kind) { + case 75 /* Identifier */: + return substituteExpressionIdentifier(node); + case 209 /* BinaryExpression */: + return substituteBinaryExpression(node); + case 207 /* PrefixUnaryExpression */: + case 208 /* PostfixUnaryExpression */: + return substituteUnaryExpression(node); + case 219 /* MetaProperty */: + return substituteMetaProperty(node); + } + return node; + } + /** + * Substitution for an Identifier expression that may contain an imported or exported symbol. + * + * @param node The node to substitute. + */ + function substituteExpressionIdentifier(node) { + if (ts.getEmitFlags(node) & 4096 /* HelperName */) { + var externalHelpersModuleName = ts.getExternalHelpersModuleName(currentSourceFile); + if (externalHelpersModuleName) { + return ts.createPropertyAccess(externalHelpersModuleName, node); + } + return node; + } + // When we see an identifier in an expression position that + // points to an imported symbol, we should substitute a qualified + // reference to the imported symbol if one is needed. + // + // - We do not substitute generated identifiers for any reason. + // - We do not substitute identifiers tagged with the LocalName flag. + if (!ts.isGeneratedIdentifier(node) && !ts.isLocalName(node)) { + var importDeclaration = resolver.getReferencedImportDeclaration(node); + if (importDeclaration) { + if (ts.isImportClause(importDeclaration)) { + return ts.setTextRange(ts.createPropertyAccess(ts.getGeneratedNameForNode(importDeclaration.parent), ts.createIdentifier("default")), + /*location*/ node); + } + else if (ts.isImportSpecifier(importDeclaration)) { + return ts.setTextRange(ts.createPropertyAccess(ts.getGeneratedNameForNode(importDeclaration.parent.parent.parent), ts.getSynthesizedClone(importDeclaration.propertyName || importDeclaration.name)), + /*location*/ node); + } + } + } + return node; + } + /** + * Substitution for a BinaryExpression that may contain an imported or exported symbol. + * + * @param node The node to substitute. + */ + function substituteBinaryExpression(node) { + // When we see an assignment expression whose left-hand side is an exported symbol, + // we should ensure all exports of that symbol are updated with the correct value. + // + // - We do not substitute generated identifiers for any reason. + // - We do not substitute identifiers tagged with the LocalName flag. + // - We do not substitute identifiers that were originally the name of an enum or + // namespace due to how they are transformed in TypeScript. + // - We only substitute identifiers that are exported at the top level. + if (ts.isAssignmentOperator(node.operatorToken.kind) + && ts.isIdentifier(node.left) + && !ts.isGeneratedIdentifier(node.left) + && !ts.isLocalName(node.left) + && !ts.isDeclarationNameOfEnumOrNamespace(node.left)) { + var exportedNames = getExports(node.left); + if (exportedNames) { + // For each additional export of the declaration, apply an export assignment. + var expression = node; + for (var _i = 0, exportedNames_4 = exportedNames; _i < exportedNames_4.length; _i++) { + var exportName = exportedNames_4[_i]; + expression = createExportExpression(exportName, preventSubstitution(expression)); + } + return expression; + } + } + return node; + } + /** + * Substitution for a UnaryExpression that may contain an imported or exported symbol. + * + * @param node The node to substitute. + */ + function substituteUnaryExpression(node) { + // When we see a prefix or postfix increment expression whose operand is an exported + // symbol, we should ensure all exports of that symbol are updated with the correct + // value. + // + // - We do not substitute generated identifiers for any reason. + // - We do not substitute identifiers tagged with the LocalName flag. + // - We do not substitute identifiers that were originally the name of an enum or + // namespace due to how they are transformed in TypeScript. + // - We only substitute identifiers that are exported at the top level. + if ((node.operator === 45 /* PlusPlusToken */ || node.operator === 46 /* MinusMinusToken */) + && ts.isIdentifier(node.operand) + && !ts.isGeneratedIdentifier(node.operand) + && !ts.isLocalName(node.operand) + && !ts.isDeclarationNameOfEnumOrNamespace(node.operand)) { + var exportedNames = getExports(node.operand); + if (exportedNames) { + var expression = node.kind === 208 /* PostfixUnaryExpression */ + ? ts.setTextRange(ts.createPrefix(node.operator, node.operand), node) + : node; + for (var _i = 0, exportedNames_5 = exportedNames; _i < exportedNames_5.length; _i++) { + var exportName = exportedNames_5[_i]; + expression = createExportExpression(exportName, preventSubstitution(expression)); + } + if (node.kind === 208 /* PostfixUnaryExpression */) { + expression = node.operator === 45 /* PlusPlusToken */ + ? ts.createSubtract(preventSubstitution(expression), ts.createLiteral(1)) + : ts.createAdd(preventSubstitution(expression), ts.createLiteral(1)); + } + return expression; + } + } + return node; + } + function substituteMetaProperty(node) { + if (ts.isImportMeta(node)) { + return ts.createPropertyAccess(contextObject, ts.createIdentifier("meta")); + } + return node; + } + /** + * Gets the exports of a name. + * + * @param name The name. + */ + function getExports(name) { + var exportedNames; + if (!ts.isGeneratedIdentifier(name)) { + var valueDeclaration = resolver.getReferencedImportDeclaration(name) + || resolver.getReferencedValueDeclaration(name); + if (valueDeclaration) { + var exportContainer = resolver.getReferencedExportContainer(name, /*prefixLocals*/ false); + if (exportContainer && exportContainer.kind === 290 /* SourceFile */) { + exportedNames = ts.append(exportedNames, ts.getDeclarationName(valueDeclaration)); + } + exportedNames = ts.addRange(exportedNames, moduleInfo && moduleInfo.exportedBindings[ts.getOriginalNodeId(valueDeclaration)]); + } + } + return exportedNames; + } + /** + * Prevent substitution of a node for this transformer. + * + * @param node The node which should not be substituted. + */ + function preventSubstitution(node) { + if (noSubstitution === undefined) + noSubstitution = []; + noSubstitution[ts.getNodeId(node)] = true; + return node; + } + /** + * Determines whether a node should not be substituted. + * + * @param node The node to test. + */ + function isSubstitutionPrevented(node) { + return noSubstitution && node.id && noSubstitution[node.id]; + } + } + ts.transformSystemModule = transformSystemModule; +})(ts || (ts = {})); +/*@internal*/ +var ts; +(function (ts) { + function transformECMAScriptModule(context) { + var compilerOptions = context.getCompilerOptions(); + var previousOnEmitNode = context.onEmitNode; + var previousOnSubstituteNode = context.onSubstituteNode; + context.onEmitNode = onEmitNode; + context.onSubstituteNode = onSubstituteNode; + context.enableEmitNotification(290 /* SourceFile */); + context.enableSubstitution(75 /* Identifier */); + var helperNameSubstitutions; + return ts.chainBundle(transformSourceFile); + function transformSourceFile(node) { + if (node.isDeclarationFile) { + return node; + } + if (ts.isExternalModule(node) || compilerOptions.isolatedModules) { + var externalHelpersImportDeclaration = ts.createExternalHelpersImportDeclarationIfNeeded(node, compilerOptions); + if (externalHelpersImportDeclaration) { + var statements = []; + var statementOffset = ts.addPrologue(statements, node.statements); + ts.append(statements, externalHelpersImportDeclaration); + ts.addRange(statements, ts.visitNodes(node.statements, visitor, ts.isStatement, statementOffset)); + return ts.updateSourceFileNode(node, ts.setTextRange(ts.createNodeArray(statements), node.statements)); + } + else { + return ts.visitEachChild(node, visitor, context); + } + } + return node; + } + function visitor(node) { + switch (node.kind) { + case 253 /* ImportEqualsDeclaration */: + // Elide `import=` as it is not legal with --module ES6 + return undefined; + case 259 /* ExportAssignment */: + return visitExportAssignment(node); + case 260 /* ExportDeclaration */: + var exportDecl = node; + return visitExportDeclaration(exportDecl); + } + return node; + } + function visitExportAssignment(node) { + // Elide `export=` as it is not legal with --module ES6 + return node.isExportEquals ? undefined : node; + } + function visitExportDeclaration(node) { + // `export * as ns` only needs to be transformed in ES2015 + if (compilerOptions.module !== undefined && compilerOptions.module > ts.ModuleKind.ES2015) { + return node; + } + // Either ill-formed or don't need to be tranformed. + if (!node.exportClause || !ts.isNamespaceExport(node.exportClause) || !node.moduleSpecifier) { + return node; + } + var oldIdentifier = node.exportClause.name; + var synthName = ts.getGeneratedNameForNode(oldIdentifier); + var importDecl = ts.createImportDeclaration( + /*decorators*/ undefined, + /*modifiers*/ undefined, ts.createImportClause(/*name*/ undefined, ts.createNamespaceImport(synthName)), node.moduleSpecifier); + ts.setOriginalNode(importDecl, node.exportClause); + var exportDecl = ts.createExportDeclaration( + /*decorators*/ undefined, + /*modifiers*/ undefined, ts.createNamedExports([ts.createExportSpecifier(synthName, oldIdentifier)])); + ts.setOriginalNode(exportDecl, node); + return [importDecl, exportDecl]; + } + // + // Emit Notification + // + /** + * Hook for node emit. + * + * @param hint A hint as to the intended usage of the node. + * @param node The node to emit. + * @param emit A callback used to emit the node in the printer. + */ + function onEmitNode(hint, node, emitCallback) { + if (ts.isSourceFile(node)) { + if ((ts.isExternalModule(node) || compilerOptions.isolatedModules) && compilerOptions.importHelpers) { + helperNameSubstitutions = ts.createMap(); + } + previousOnEmitNode(hint, node, emitCallback); + helperNameSubstitutions = undefined; + } + else { + previousOnEmitNode(hint, node, emitCallback); + } + } + // + // Substitutions + // + /** + * Hooks node substitutions. + * + * @param hint A hint as to the intended usage of the node. + * @param node The node to substitute. + */ + function onSubstituteNode(hint, node) { + node = previousOnSubstituteNode(hint, node); + if (helperNameSubstitutions && ts.isIdentifier(node) && ts.getEmitFlags(node) & 4096 /* HelperName */) { + return substituteHelperName(node); + } + return node; + } + function substituteHelperName(node) { + var name = ts.idText(node); + var substitution = helperNameSubstitutions.get(name); + if (!substitution) { + helperNameSubstitutions.set(name, substitution = ts.createFileLevelUniqueName(name)); + } + return substitution; + } + } + ts.transformECMAScriptModule = transformECMAScriptModule; +})(ts || (ts = {})); +/* @internal */ +var ts; +(function (ts) { + function canProduceDiagnostics(node) { + return ts.isVariableDeclaration(node) || + ts.isPropertyDeclaration(node) || + ts.isPropertySignature(node) || + ts.isBindingElement(node) || + ts.isSetAccessor(node) || + ts.isGetAccessor(node) || + ts.isConstructSignatureDeclaration(node) || + ts.isCallSignatureDeclaration(node) || + ts.isMethodDeclaration(node) || + ts.isMethodSignature(node) || + ts.isFunctionDeclaration(node) || + ts.isParameter(node) || + ts.isTypeParameterDeclaration(node) || + ts.isExpressionWithTypeArguments(node) || + ts.isImportEqualsDeclaration(node) || + ts.isTypeAliasDeclaration(node) || + ts.isConstructorDeclaration(node) || + ts.isIndexSignatureDeclaration(node) || + ts.isPropertyAccessExpression(node); + } + ts.canProduceDiagnostics = canProduceDiagnostics; + function createGetSymbolAccessibilityDiagnosticForNodeName(node) { + if (ts.isSetAccessor(node) || ts.isGetAccessor(node)) { + return getAccessorNameVisibilityError; + } + else if (ts.isMethodSignature(node) || ts.isMethodDeclaration(node)) { + return getMethodNameVisibilityError; + } + else { + return createGetSymbolAccessibilityDiagnosticForNode(node); + } + function getAccessorNameVisibilityError(symbolAccessibilityResult) { + var diagnosticMessage = getAccessorNameVisibilityDiagnosticMessage(symbolAccessibilityResult); + return diagnosticMessage !== undefined ? { + diagnosticMessage: diagnosticMessage, + errorNode: node, + typeName: node.name + } : undefined; + } + function getAccessorNameVisibilityDiagnosticMessage(symbolAccessibilityResult) { + if (ts.hasModifier(node, 32 /* Static */)) { + return symbolAccessibilityResult.errorModuleName ? + symbolAccessibilityResult.accessibility === 2 /* CannotBeNamed */ ? + ts.Diagnostics.Public_static_property_0_of_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named : + ts.Diagnostics.Public_static_property_0_of_exported_class_has_or_is_using_name_1_from_private_module_2 : + ts.Diagnostics.Public_static_property_0_of_exported_class_has_or_is_using_private_name_1; + } + else if (node.parent.kind === 245 /* ClassDeclaration */) { + return symbolAccessibilityResult.errorModuleName ? + symbolAccessibilityResult.accessibility === 2 /* CannotBeNamed */ ? + ts.Diagnostics.Public_property_0_of_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named : + ts.Diagnostics.Public_property_0_of_exported_class_has_or_is_using_name_1_from_private_module_2 : + ts.Diagnostics.Public_property_0_of_exported_class_has_or_is_using_private_name_1; + } + else { + return symbolAccessibilityResult.errorModuleName ? + ts.Diagnostics.Property_0_of_exported_interface_has_or_is_using_name_1_from_private_module_2 : + ts.Diagnostics.Property_0_of_exported_interface_has_or_is_using_private_name_1; + } + } + function getMethodNameVisibilityError(symbolAccessibilityResult) { + var diagnosticMessage = getMethodNameVisibilityDiagnosticMessage(symbolAccessibilityResult); + return diagnosticMessage !== undefined ? { + diagnosticMessage: diagnosticMessage, + errorNode: node, + typeName: node.name + } : undefined; + } + function getMethodNameVisibilityDiagnosticMessage(symbolAccessibilityResult) { + if (ts.hasModifier(node, 32 /* Static */)) { + return symbolAccessibilityResult.errorModuleName ? + symbolAccessibilityResult.accessibility === 2 /* CannotBeNamed */ ? + ts.Diagnostics.Public_static_method_0_of_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named : + ts.Diagnostics.Public_static_method_0_of_exported_class_has_or_is_using_name_1_from_private_module_2 : + ts.Diagnostics.Public_static_method_0_of_exported_class_has_or_is_using_private_name_1; + } + else if (node.parent.kind === 245 /* ClassDeclaration */) { + return symbolAccessibilityResult.errorModuleName ? + symbolAccessibilityResult.accessibility === 2 /* CannotBeNamed */ ? + ts.Diagnostics.Public_method_0_of_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named : + ts.Diagnostics.Public_method_0_of_exported_class_has_or_is_using_name_1_from_private_module_2 : + ts.Diagnostics.Public_method_0_of_exported_class_has_or_is_using_private_name_1; + } + else { + return symbolAccessibilityResult.errorModuleName ? + ts.Diagnostics.Method_0_of_exported_interface_has_or_is_using_name_1_from_private_module_2 : + ts.Diagnostics.Method_0_of_exported_interface_has_or_is_using_private_name_1; + } + } + } + ts.createGetSymbolAccessibilityDiagnosticForNodeName = createGetSymbolAccessibilityDiagnosticForNodeName; + function createGetSymbolAccessibilityDiagnosticForNode(node) { + if (ts.isVariableDeclaration(node) || ts.isPropertyDeclaration(node) || ts.isPropertySignature(node) || ts.isPropertyAccessExpression(node) || ts.isBindingElement(node) || ts.isConstructorDeclaration(node)) { + return getVariableDeclarationTypeVisibilityError; + } + else if (ts.isSetAccessor(node) || ts.isGetAccessor(node)) { + return getAccessorDeclarationTypeVisibilityError; + } + else if (ts.isConstructSignatureDeclaration(node) || ts.isCallSignatureDeclaration(node) || ts.isMethodDeclaration(node) || ts.isMethodSignature(node) || ts.isFunctionDeclaration(node) || ts.isIndexSignatureDeclaration(node)) { + return getReturnTypeVisibilityError; + } + else if (ts.isParameter(node)) { + if (ts.isParameterPropertyDeclaration(node, node.parent) && ts.hasModifier(node.parent, 8 /* Private */)) { + return getVariableDeclarationTypeVisibilityError; + } + return getParameterDeclarationTypeVisibilityError; + } + else if (ts.isTypeParameterDeclaration(node)) { + return getTypeParameterConstraintVisibilityError; + } + else if (ts.isExpressionWithTypeArguments(node)) { + return getHeritageClauseVisibilityError; + } + else if (ts.isImportEqualsDeclaration(node)) { + return getImportEntityNameVisibilityError; + } + else if (ts.isTypeAliasDeclaration(node)) { + return getTypeAliasDeclarationVisibilityError; + } + else { + return ts.Debug.assertNever(node, "Attempted to set a declaration diagnostic context for unhandled node kind: " + ts.SyntaxKind[node.kind]); + } + function getVariableDeclarationTypeVisibilityDiagnosticMessage(symbolAccessibilityResult) { + if (node.kind === 242 /* VariableDeclaration */ || node.kind === 191 /* BindingElement */) { + return symbolAccessibilityResult.errorModuleName ? + symbolAccessibilityResult.accessibility === 2 /* CannotBeNamed */ ? + ts.Diagnostics.Exported_variable_0_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named : + ts.Diagnostics.Exported_variable_0_has_or_is_using_name_1_from_private_module_2 : + ts.Diagnostics.Exported_variable_0_has_or_is_using_private_name_1; + } + // This check is to ensure we don't report error on constructor parameter property as that error would be reported during parameter emit + // The only exception here is if the constructor was marked as private. we are not emitting the constructor parameters at all. + else if (node.kind === 159 /* PropertyDeclaration */ || node.kind === 194 /* PropertyAccessExpression */ || node.kind === 158 /* PropertySignature */ || + (node.kind === 156 /* Parameter */ && ts.hasModifier(node.parent, 8 /* Private */))) { + // TODO(jfreeman): Deal with computed properties in error reporting. + if (ts.hasModifier(node, 32 /* Static */)) { + return symbolAccessibilityResult.errorModuleName ? + symbolAccessibilityResult.accessibility === 2 /* CannotBeNamed */ ? + ts.Diagnostics.Public_static_property_0_of_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named : + ts.Diagnostics.Public_static_property_0_of_exported_class_has_or_is_using_name_1_from_private_module_2 : + ts.Diagnostics.Public_static_property_0_of_exported_class_has_or_is_using_private_name_1; + } + else if (node.parent.kind === 245 /* ClassDeclaration */ || node.kind === 156 /* Parameter */) { + return symbolAccessibilityResult.errorModuleName ? + symbolAccessibilityResult.accessibility === 2 /* CannotBeNamed */ ? + ts.Diagnostics.Public_property_0_of_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named : + ts.Diagnostics.Public_property_0_of_exported_class_has_or_is_using_name_1_from_private_module_2 : + ts.Diagnostics.Public_property_0_of_exported_class_has_or_is_using_private_name_1; + } + else { + // Interfaces cannot have types that cannot be named + return symbolAccessibilityResult.errorModuleName ? + ts.Diagnostics.Property_0_of_exported_interface_has_or_is_using_name_1_from_private_module_2 : + ts.Diagnostics.Property_0_of_exported_interface_has_or_is_using_private_name_1; + } + } + } + function getVariableDeclarationTypeVisibilityError(symbolAccessibilityResult) { + var diagnosticMessage = getVariableDeclarationTypeVisibilityDiagnosticMessage(symbolAccessibilityResult); + return diagnosticMessage !== undefined ? { + diagnosticMessage: diagnosticMessage, + errorNode: node, + typeName: node.name + } : undefined; + } + function getAccessorDeclarationTypeVisibilityError(symbolAccessibilityResult) { + var diagnosticMessage; + if (node.kind === 164 /* SetAccessor */) { + // Getters can infer the return type from the returned expression, but setters cannot, so the + // "_from_external_module_1_but_cannot_be_named" case cannot occur. + if (ts.hasModifier(node, 32 /* Static */)) { + diagnosticMessage = symbolAccessibilityResult.errorModuleName ? + ts.Diagnostics.Parameter_type_of_public_static_setter_0_from_exported_class_has_or_is_using_name_1_from_private_module_2 : + ts.Diagnostics.Parameter_type_of_public_static_setter_0_from_exported_class_has_or_is_using_private_name_1; + } + else { + diagnosticMessage = symbolAccessibilityResult.errorModuleName ? + ts.Diagnostics.Parameter_type_of_public_setter_0_from_exported_class_has_or_is_using_name_1_from_private_module_2 : + ts.Diagnostics.Parameter_type_of_public_setter_0_from_exported_class_has_or_is_using_private_name_1; + } + } + else { + if (ts.hasModifier(node, 32 /* Static */)) { + diagnosticMessage = symbolAccessibilityResult.errorModuleName ? + symbolAccessibilityResult.accessibility === 2 /* CannotBeNamed */ ? + ts.Diagnostics.Return_type_of_public_static_getter_0_from_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named : + ts.Diagnostics.Return_type_of_public_static_getter_0_from_exported_class_has_or_is_using_name_1_from_private_module_2 : + ts.Diagnostics.Return_type_of_public_static_getter_0_from_exported_class_has_or_is_using_private_name_1; + } + else { + diagnosticMessage = symbolAccessibilityResult.errorModuleName ? + symbolAccessibilityResult.accessibility === 2 /* CannotBeNamed */ ? + ts.Diagnostics.Return_type_of_public_getter_0_from_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named : + ts.Diagnostics.Return_type_of_public_getter_0_from_exported_class_has_or_is_using_name_1_from_private_module_2 : + ts.Diagnostics.Return_type_of_public_getter_0_from_exported_class_has_or_is_using_private_name_1; + } + } + return { + diagnosticMessage: diagnosticMessage, + errorNode: node.name, + typeName: node.name + }; + } + function getReturnTypeVisibilityError(symbolAccessibilityResult) { + var diagnosticMessage; + switch (node.kind) { + case 166 /* ConstructSignature */: + // Interfaces cannot have return types that cannot be named + diagnosticMessage = symbolAccessibilityResult.errorModuleName ? + ts.Diagnostics.Return_type_of_constructor_signature_from_exported_interface_has_or_is_using_name_0_from_private_module_1 : + ts.Diagnostics.Return_type_of_constructor_signature_from_exported_interface_has_or_is_using_private_name_0; + break; + case 165 /* CallSignature */: + // Interfaces cannot have return types that cannot be named + diagnosticMessage = symbolAccessibilityResult.errorModuleName ? + ts.Diagnostics.Return_type_of_call_signature_from_exported_interface_has_or_is_using_name_0_from_private_module_1 : + ts.Diagnostics.Return_type_of_call_signature_from_exported_interface_has_or_is_using_private_name_0; + break; + case 167 /* IndexSignature */: + // Interfaces cannot have return types that cannot be named + diagnosticMessage = symbolAccessibilityResult.errorModuleName ? + ts.Diagnostics.Return_type_of_index_signature_from_exported_interface_has_or_is_using_name_0_from_private_module_1 : + ts.Diagnostics.Return_type_of_index_signature_from_exported_interface_has_or_is_using_private_name_0; + break; + case 161 /* MethodDeclaration */: + case 160 /* MethodSignature */: + if (ts.hasModifier(node, 32 /* Static */)) { + diagnosticMessage = symbolAccessibilityResult.errorModuleName ? + symbolAccessibilityResult.accessibility === 2 /* CannotBeNamed */ ? + ts.Diagnostics.Return_type_of_public_static_method_from_exported_class_has_or_is_using_name_0_from_external_module_1_but_cannot_be_named : + ts.Diagnostics.Return_type_of_public_static_method_from_exported_class_has_or_is_using_name_0_from_private_module_1 : + ts.Diagnostics.Return_type_of_public_static_method_from_exported_class_has_or_is_using_private_name_0; + } + else if (node.parent.kind === 245 /* ClassDeclaration */) { + diagnosticMessage = symbolAccessibilityResult.errorModuleName ? + symbolAccessibilityResult.accessibility === 2 /* CannotBeNamed */ ? + ts.Diagnostics.Return_type_of_public_method_from_exported_class_has_or_is_using_name_0_from_external_module_1_but_cannot_be_named : + ts.Diagnostics.Return_type_of_public_method_from_exported_class_has_or_is_using_name_0_from_private_module_1 : + ts.Diagnostics.Return_type_of_public_method_from_exported_class_has_or_is_using_private_name_0; + } + else { + // Interfaces cannot have return types that cannot be named + diagnosticMessage = symbolAccessibilityResult.errorModuleName ? + ts.Diagnostics.Return_type_of_method_from_exported_interface_has_or_is_using_name_0_from_private_module_1 : + ts.Diagnostics.Return_type_of_method_from_exported_interface_has_or_is_using_private_name_0; + } + break; + case 244 /* FunctionDeclaration */: + diagnosticMessage = symbolAccessibilityResult.errorModuleName ? + symbolAccessibilityResult.accessibility === 2 /* CannotBeNamed */ ? + ts.Diagnostics.Return_type_of_exported_function_has_or_is_using_name_0_from_external_module_1_but_cannot_be_named : + ts.Diagnostics.Return_type_of_exported_function_has_or_is_using_name_0_from_private_module_1 : + ts.Diagnostics.Return_type_of_exported_function_has_or_is_using_private_name_0; + break; + default: + return ts.Debug.fail("This is unknown kind for signature: " + node.kind); + } + return { + diagnosticMessage: diagnosticMessage, + errorNode: node.name || node + }; + } + function getParameterDeclarationTypeVisibilityError(symbolAccessibilityResult) { + var diagnosticMessage = getParameterDeclarationTypeVisibilityDiagnosticMessage(symbolAccessibilityResult); + return diagnosticMessage !== undefined ? { + diagnosticMessage: diagnosticMessage, + errorNode: node, + typeName: node.name + } : undefined; + } + function getParameterDeclarationTypeVisibilityDiagnosticMessage(symbolAccessibilityResult) { + switch (node.parent.kind) { + case 162 /* Constructor */: + return symbolAccessibilityResult.errorModuleName ? + symbolAccessibilityResult.accessibility === 2 /* CannotBeNamed */ ? + ts.Diagnostics.Parameter_0_of_constructor_from_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named : + ts.Diagnostics.Parameter_0_of_constructor_from_exported_class_has_or_is_using_name_1_from_private_module_2 : + ts.Diagnostics.Parameter_0_of_constructor_from_exported_class_has_or_is_using_private_name_1; + case 166 /* ConstructSignature */: + case 171 /* ConstructorType */: + // Interfaces cannot have parameter types that cannot be named + return symbolAccessibilityResult.errorModuleName ? + ts.Diagnostics.Parameter_0_of_constructor_signature_from_exported_interface_has_or_is_using_name_1_from_private_module_2 : + ts.Diagnostics.Parameter_0_of_constructor_signature_from_exported_interface_has_or_is_using_private_name_1; + case 165 /* CallSignature */: + // Interfaces cannot have parameter types that cannot be named + return symbolAccessibilityResult.errorModuleName ? + ts.Diagnostics.Parameter_0_of_call_signature_from_exported_interface_has_or_is_using_name_1_from_private_module_2 : + ts.Diagnostics.Parameter_0_of_call_signature_from_exported_interface_has_or_is_using_private_name_1; + case 167 /* IndexSignature */: + // Interfaces cannot have parameter types that cannot be named + return symbolAccessibilityResult.errorModuleName ? + ts.Diagnostics.Parameter_0_of_index_signature_from_exported_interface_has_or_is_using_name_1_from_private_module_2 : + ts.Diagnostics.Parameter_0_of_index_signature_from_exported_interface_has_or_is_using_private_name_1; + case 161 /* MethodDeclaration */: + case 160 /* MethodSignature */: + if (ts.hasModifier(node.parent, 32 /* Static */)) { + return symbolAccessibilityResult.errorModuleName ? + symbolAccessibilityResult.accessibility === 2 /* CannotBeNamed */ ? + ts.Diagnostics.Parameter_0_of_public_static_method_from_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named : + ts.Diagnostics.Parameter_0_of_public_static_method_from_exported_class_has_or_is_using_name_1_from_private_module_2 : + ts.Diagnostics.Parameter_0_of_public_static_method_from_exported_class_has_or_is_using_private_name_1; + } + else if (node.parent.parent.kind === 245 /* ClassDeclaration */) { + return symbolAccessibilityResult.errorModuleName ? + symbolAccessibilityResult.accessibility === 2 /* CannotBeNamed */ ? + ts.Diagnostics.Parameter_0_of_public_method_from_exported_class_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named : + ts.Diagnostics.Parameter_0_of_public_method_from_exported_class_has_or_is_using_name_1_from_private_module_2 : + ts.Diagnostics.Parameter_0_of_public_method_from_exported_class_has_or_is_using_private_name_1; + } + else { + // Interfaces cannot have parameter types that cannot be named + return symbolAccessibilityResult.errorModuleName ? + ts.Diagnostics.Parameter_0_of_method_from_exported_interface_has_or_is_using_name_1_from_private_module_2 : + ts.Diagnostics.Parameter_0_of_method_from_exported_interface_has_or_is_using_private_name_1; + } + case 244 /* FunctionDeclaration */: + case 170 /* FunctionType */: + return symbolAccessibilityResult.errorModuleName ? + symbolAccessibilityResult.accessibility === 2 /* CannotBeNamed */ ? + ts.Diagnostics.Parameter_0_of_exported_function_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named : + ts.Diagnostics.Parameter_0_of_exported_function_has_or_is_using_name_1_from_private_module_2 : + ts.Diagnostics.Parameter_0_of_exported_function_has_or_is_using_private_name_1; + case 164 /* SetAccessor */: + case 163 /* GetAccessor */: + return symbolAccessibilityResult.errorModuleName ? + symbolAccessibilityResult.accessibility === 2 /* CannotBeNamed */ ? + ts.Diagnostics.Parameter_0_of_accessor_has_or_is_using_name_1_from_external_module_2_but_cannot_be_named : + ts.Diagnostics.Parameter_0_of_accessor_has_or_is_using_name_1_from_private_module_2 : + ts.Diagnostics.Parameter_0_of_accessor_has_or_is_using_private_name_1; + default: + return ts.Debug.fail("Unknown parent for parameter: " + ts.SyntaxKind[node.parent.kind]); + } + } + function getTypeParameterConstraintVisibilityError() { + // Type parameter constraints are named by user so we should always be able to name it + var diagnosticMessage; + switch (node.parent.kind) { + case 245 /* ClassDeclaration */: + diagnosticMessage = ts.Diagnostics.Type_parameter_0_of_exported_class_has_or_is_using_private_name_1; + break; + case 246 /* InterfaceDeclaration */: + diagnosticMessage = ts.Diagnostics.Type_parameter_0_of_exported_interface_has_or_is_using_private_name_1; + break; + case 186 /* MappedType */: + diagnosticMessage = ts.Diagnostics.Type_parameter_0_of_exported_mapped_object_type_is_using_private_name_1; + break; + case 171 /* ConstructorType */: + case 166 /* ConstructSignature */: + diagnosticMessage = ts.Diagnostics.Type_parameter_0_of_constructor_signature_from_exported_interface_has_or_is_using_private_name_1; + break; + case 165 /* CallSignature */: + diagnosticMessage = ts.Diagnostics.Type_parameter_0_of_call_signature_from_exported_interface_has_or_is_using_private_name_1; + break; + case 161 /* MethodDeclaration */: + case 160 /* MethodSignature */: + if (ts.hasModifier(node.parent, 32 /* Static */)) { + diagnosticMessage = ts.Diagnostics.Type_parameter_0_of_public_static_method_from_exported_class_has_or_is_using_private_name_1; + } + else if (node.parent.parent.kind === 245 /* ClassDeclaration */) { + diagnosticMessage = ts.Diagnostics.Type_parameter_0_of_public_method_from_exported_class_has_or_is_using_private_name_1; + } + else { + diagnosticMessage = ts.Diagnostics.Type_parameter_0_of_method_from_exported_interface_has_or_is_using_private_name_1; + } + break; + case 170 /* FunctionType */: + case 244 /* FunctionDeclaration */: + diagnosticMessage = ts.Diagnostics.Type_parameter_0_of_exported_function_has_or_is_using_private_name_1; + break; + case 247 /* TypeAliasDeclaration */: + diagnosticMessage = ts.Diagnostics.Type_parameter_0_of_exported_type_alias_has_or_is_using_private_name_1; + break; + default: + return ts.Debug.fail("This is unknown parent for type parameter: " + node.parent.kind); + } + return { + diagnosticMessage: diagnosticMessage, + errorNode: node, + typeName: node.name + }; + } + function getHeritageClauseVisibilityError() { + var diagnosticMessage; + // Heritage clause is written by user so it can always be named + if (node.parent.parent.kind === 245 /* ClassDeclaration */) { + // Class or Interface implemented/extended is inaccessible + diagnosticMessage = ts.isHeritageClause(node.parent) && node.parent.token === 113 /* ImplementsKeyword */ ? + ts.Diagnostics.Implements_clause_of_exported_class_0_has_or_is_using_private_name_1 : + ts.Diagnostics.extends_clause_of_exported_class_0_has_or_is_using_private_name_1; + } + else { + // interface is inaccessible + diagnosticMessage = ts.Diagnostics.extends_clause_of_exported_interface_0_has_or_is_using_private_name_1; + } + return { + diagnosticMessage: diagnosticMessage, + errorNode: node, + typeName: ts.getNameOfDeclaration(node.parent.parent) + }; + } + function getImportEntityNameVisibilityError() { + return { + diagnosticMessage: ts.Diagnostics.Import_declaration_0_is_using_private_name_1, + errorNode: node, + typeName: node.name + }; + } + function getTypeAliasDeclarationVisibilityError() { + return { + diagnosticMessage: ts.Diagnostics.Exported_type_alias_0_has_or_is_using_private_name_1, + errorNode: node.type, + typeName: node.name + }; + } + } + ts.createGetSymbolAccessibilityDiagnosticForNode = createGetSymbolAccessibilityDiagnosticForNode; +})(ts || (ts = {})); +/*@internal*/ +var ts; +(function (ts) { + function getDeclarationDiagnostics(host, resolver, file) { + if (file && ts.isJsonSourceFile(file)) { + return []; // No declaration diagnostics for json for now + } + var compilerOptions = host.getCompilerOptions(); + var result = ts.transformNodes(resolver, host, compilerOptions, file ? [file] : ts.filter(host.getSourceFiles(), ts.isSourceFileNotJson), [transformDeclarations], /*allowDtsFiles*/ false); + return result.diagnostics; + } + ts.getDeclarationDiagnostics = getDeclarationDiagnostics; + function hasInternalAnnotation(range, currentSourceFile) { + var comment = currentSourceFile.text.substring(range.pos, range.end); + return ts.stringContains(comment, "@internal"); + } + function isInternalDeclaration(node, currentSourceFile) { + var parseTreeNode = ts.getParseTreeNode(node); + if (parseTreeNode && parseTreeNode.kind === 156 /* Parameter */) { + var paramIdx = parseTreeNode.parent.parameters.indexOf(parseTreeNode); + var previousSibling = paramIdx > 0 ? parseTreeNode.parent.parameters[paramIdx - 1] : undefined; + var text = currentSourceFile.text; + var commentRanges = previousSibling + ? ts.concatenate( + // to handle + // ... parameters, /* @internal */ + // public param: string + ts.getTrailingCommentRanges(text, ts.skipTrivia(text, previousSibling.end + 1, /* stopAfterLineBreak */ false, /* stopAtComments */ true)), ts.getLeadingCommentRanges(text, node.pos)) + : ts.getTrailingCommentRanges(text, ts.skipTrivia(text, node.pos, /* stopAfterLineBreak */ false, /* stopAtComments */ true)); + return commentRanges && commentRanges.length && hasInternalAnnotation(ts.last(commentRanges), currentSourceFile); + } + var leadingCommentRanges = parseTreeNode && ts.getLeadingCommentRangesOfNode(parseTreeNode, currentSourceFile); + return !!ts.forEach(leadingCommentRanges, function (range) { + return hasInternalAnnotation(range, currentSourceFile); + }); + } + ts.isInternalDeclaration = isInternalDeclaration; + var declarationEmitNodeBuilderFlags = 1024 /* MultilineObjectLiterals */ | + 2048 /* WriteClassExpressionAsTypeLiteral */ | + 4096 /* UseTypeOfFunction */ | + 8 /* UseStructuralFallback */ | + 524288 /* AllowEmptyTuple */ | + 4 /* GenerateNamesForShadowedTypeParams */ | + 1 /* NoTruncation */; + /** + * Transforms a ts file into a .d.ts file + * This process requires type information, which is retrieved through the emit resolver. Because of this, + * in many places this transformer assumes it will be operating on parse tree nodes directly. + * This means that _no transforms should be allowed to occur before this one_. + */ + function transformDeclarations(context) { + var throwDiagnostic = function () { return ts.Debug.fail("Diagnostic emitted without context"); }; + var getSymbolAccessibilityDiagnostic = throwDiagnostic; + var needsDeclare = true; + var isBundledEmit = false; + var resultHasExternalModuleIndicator = false; + var needsScopeFixMarker = false; + var resultHasScopeMarker = false; + var enclosingDeclaration; + var necessaryTypeReferences; + var lateMarkedStatements; + var lateStatementReplacementMap; + var suppressNewDiagnosticContexts; + var exportedModulesFromDeclarationEmit; + var host = context.getEmitHost(); + var symbolTracker = { + trackSymbol: trackSymbol, + reportInaccessibleThisError: reportInaccessibleThisError, + reportInaccessibleUniqueSymbolError: reportInaccessibleUniqueSymbolError, + reportCyclicStructureError: reportCyclicStructureError, + reportPrivateInBaseOfClassExpression: reportPrivateInBaseOfClassExpression, + reportLikelyUnsafeImportRequiredError: reportLikelyUnsafeImportRequiredError, + moduleResolverHost: host, + trackReferencedAmbientModule: trackReferencedAmbientModule, + trackExternalModuleSymbolOfImportTypeNode: trackExternalModuleSymbolOfImportTypeNode, + reportNonlocalAugmentation: reportNonlocalAugmentation + }; + var errorNameNode; + var currentSourceFile; + var refs; + var libs; + var emittedImports; // must be declared in container so it can be `undefined` while transformer's first pass + var resolver = context.getEmitResolver(); + var options = context.getCompilerOptions(); + var noResolve = options.noResolve, stripInternal = options.stripInternal; + return transformRoot; + function recordTypeReferenceDirectivesIfNecessary(typeReferenceDirectives) { + if (!typeReferenceDirectives) { + return; + } + necessaryTypeReferences = necessaryTypeReferences || ts.createMap(); + for (var _i = 0, typeReferenceDirectives_2 = typeReferenceDirectives; _i < typeReferenceDirectives_2.length; _i++) { + var ref = typeReferenceDirectives_2[_i]; + necessaryTypeReferences.set(ref, true); + } + } + function trackReferencedAmbientModule(node, symbol) { + // If it is visible via `// `, then we should just use that + var directives = resolver.getTypeReferenceDirectivesForSymbol(symbol, 67108863 /* All */); + if (ts.length(directives)) { + return recordTypeReferenceDirectivesIfNecessary(directives); + } + // Otherwise we should emit a path-based reference + var container = ts.getSourceFileOfNode(node); + refs.set("" + ts.getOriginalNodeId(container), container); + } + function handleSymbolAccessibilityError(symbolAccessibilityResult) { + if (symbolAccessibilityResult.accessibility === 0 /* Accessible */) { + // Add aliases back onto the possible imports list if they're not there so we can try them again with updated visibility info + if (symbolAccessibilityResult && symbolAccessibilityResult.aliasesToMakeVisible) { + if (!lateMarkedStatements) { + lateMarkedStatements = symbolAccessibilityResult.aliasesToMakeVisible; + } + else { + for (var _i = 0, _a = symbolAccessibilityResult.aliasesToMakeVisible; _i < _a.length; _i++) { + var ref = _a[_i]; + ts.pushIfUnique(lateMarkedStatements, ref); + } + } + } + // TODO: Do all these accessibility checks inside/after the first pass in the checker when declarations are enabled, if possible + } + else { + // Report error + var errorInfo = getSymbolAccessibilityDiagnostic(symbolAccessibilityResult); + if (errorInfo) { + if (errorInfo.typeName) { + context.addDiagnostic(ts.createDiagnosticForNode(symbolAccessibilityResult.errorNode || errorInfo.errorNode, errorInfo.diagnosticMessage, ts.getTextOfNode(errorInfo.typeName), symbolAccessibilityResult.errorSymbolName, symbolAccessibilityResult.errorModuleName)); + } + else { + context.addDiagnostic(ts.createDiagnosticForNode(symbolAccessibilityResult.errorNode || errorInfo.errorNode, errorInfo.diagnosticMessage, symbolAccessibilityResult.errorSymbolName, symbolAccessibilityResult.errorModuleName)); + } + } + } + } + function trackExternalModuleSymbolOfImportTypeNode(symbol) { + if (!isBundledEmit) { + (exportedModulesFromDeclarationEmit || (exportedModulesFromDeclarationEmit = [])).push(symbol); + } + } + function trackSymbol(symbol, enclosingDeclaration, meaning) { + if (symbol.flags & 262144 /* TypeParameter */) + return; + handleSymbolAccessibilityError(resolver.isSymbolAccessible(symbol, enclosingDeclaration, meaning, /*shouldComputeAliasesToMakeVisible*/ true)); + recordTypeReferenceDirectivesIfNecessary(resolver.getTypeReferenceDirectivesForSymbol(symbol, meaning)); + } + function reportPrivateInBaseOfClassExpression(propertyName) { + if (errorNameNode) { + context.addDiagnostic(ts.createDiagnosticForNode(errorNameNode, ts.Diagnostics.Property_0_of_exported_class_expression_may_not_be_private_or_protected, propertyName)); + } + } + function reportInaccessibleUniqueSymbolError() { + if (errorNameNode) { + context.addDiagnostic(ts.createDiagnosticForNode(errorNameNode, ts.Diagnostics.The_inferred_type_of_0_references_an_inaccessible_1_type_A_type_annotation_is_necessary, ts.declarationNameToString(errorNameNode), "unique symbol")); + } + } + function reportCyclicStructureError() { + if (errorNameNode) { + context.addDiagnostic(ts.createDiagnosticForNode(errorNameNode, ts.Diagnostics.The_inferred_type_of_0_references_a_type_with_a_cyclic_structure_which_cannot_be_trivially_serialized_A_type_annotation_is_necessary, ts.declarationNameToString(errorNameNode))); + } + } + function reportInaccessibleThisError() { + if (errorNameNode) { + context.addDiagnostic(ts.createDiagnosticForNode(errorNameNode, ts.Diagnostics.The_inferred_type_of_0_references_an_inaccessible_1_type_A_type_annotation_is_necessary, ts.declarationNameToString(errorNameNode), "this")); + } + } + function reportLikelyUnsafeImportRequiredError(specifier) { + if (errorNameNode) { + context.addDiagnostic(ts.createDiagnosticForNode(errorNameNode, ts.Diagnostics.The_inferred_type_of_0_cannot_be_named_without_a_reference_to_1_This_is_likely_not_portable_A_type_annotation_is_necessary, ts.declarationNameToString(errorNameNode), specifier)); + } + } + function reportNonlocalAugmentation(containingFile, parentSymbol, symbol) { + var primaryDeclaration = ts.find(parentSymbol.declarations, function (d) { return ts.getSourceFileOfNode(d) === containingFile; }); + var augmentingDeclarations = ts.filter(symbol.declarations, function (d) { return ts.getSourceFileOfNode(d) !== containingFile; }); + for (var _i = 0, augmentingDeclarations_1 = augmentingDeclarations; _i < augmentingDeclarations_1.length; _i++) { + var augmentations = augmentingDeclarations_1[_i]; + context.addDiagnostic(ts.addRelatedInfo(ts.createDiagnosticForNode(augmentations, ts.Diagnostics.Declaration_augments_declaration_in_another_file_This_cannot_be_serialized), ts.createDiagnosticForNode(primaryDeclaration, ts.Diagnostics.This_is_the_declaration_being_augmented_Consider_moving_the_augmenting_declaration_into_the_same_file))); + } + } + function transformDeclarationsForJS(sourceFile, bundled) { + var oldDiag = getSymbolAccessibilityDiagnostic; + getSymbolAccessibilityDiagnostic = function (s) { return ({ + diagnosticMessage: s.errorModuleName + ? ts.Diagnostics.Declaration_emit_for_this_file_requires_using_private_name_0_from_module_1_An_explicit_type_annotation_may_unblock_declaration_emit + : ts.Diagnostics.Declaration_emit_for_this_file_requires_using_private_name_0_An_explicit_type_annotation_may_unblock_declaration_emit, + errorNode: s.errorNode || sourceFile + }); }; + var result = resolver.getDeclarationStatementsForSourceFile(sourceFile, declarationEmitNodeBuilderFlags, symbolTracker, bundled); + getSymbolAccessibilityDiagnostic = oldDiag; + return result; + } + function transformRoot(node) { + if (node.kind === 290 /* SourceFile */ && node.isDeclarationFile) { + return node; + } + if (node.kind === 291 /* Bundle */) { + isBundledEmit = true; + refs = ts.createMap(); + libs = ts.createMap(); + var hasNoDefaultLib_1 = false; + var bundle = ts.createBundle(ts.map(node.sourceFiles, function (sourceFile) { + if (sourceFile.isDeclarationFile) + return undefined; // Omit declaration files from bundle results, too // TODO: GH#18217 + hasNoDefaultLib_1 = hasNoDefaultLib_1 || sourceFile.hasNoDefaultLib; + currentSourceFile = sourceFile; + enclosingDeclaration = sourceFile; + lateMarkedStatements = undefined; + suppressNewDiagnosticContexts = false; + lateStatementReplacementMap = ts.createMap(); + getSymbolAccessibilityDiagnostic = throwDiagnostic; + needsScopeFixMarker = false; + resultHasScopeMarker = false; + collectReferences(sourceFile, refs); + collectLibs(sourceFile, libs); + if (ts.isExternalOrCommonJsModule(sourceFile) || ts.isJsonSourceFile(sourceFile)) { + resultHasExternalModuleIndicator = false; // unused in external module bundle emit (all external modules are within module blocks, therefore are known to be modules) + needsDeclare = false; + var statements = ts.isSourceFileJS(sourceFile) ? ts.createNodeArray(transformDeclarationsForJS(sourceFile, /*bundled*/ true)) : ts.visitNodes(sourceFile.statements, visitDeclarationStatements); + var newFile = ts.updateSourceFileNode(sourceFile, [ts.createModuleDeclaration([], [ts.createModifier(130 /* DeclareKeyword */)], ts.createLiteral(ts.getResolvedExternalModuleName(context.getEmitHost(), sourceFile)), ts.createModuleBlock(ts.setTextRange(ts.createNodeArray(transformAndReplaceLatePaintedStatements(statements)), sourceFile.statements)))], /*isDeclarationFile*/ true, /*referencedFiles*/ [], /*typeReferences*/ [], /*hasNoDefaultLib*/ false, /*libReferences*/ []); + return newFile; + } + needsDeclare = true; + var updated = ts.isSourceFileJS(sourceFile) ? ts.createNodeArray(transformDeclarationsForJS(sourceFile)) : ts.visitNodes(sourceFile.statements, visitDeclarationStatements); + return ts.updateSourceFileNode(sourceFile, transformAndReplaceLatePaintedStatements(updated), /*isDeclarationFile*/ true, /*referencedFiles*/ [], /*typeReferences*/ [], /*hasNoDefaultLib*/ false, /*libReferences*/ []); + }), ts.mapDefined(node.prepends, function (prepend) { + if (prepend.kind === 293 /* InputFiles */) { + var sourceFile = ts.createUnparsedSourceFile(prepend, "dts", stripInternal); + hasNoDefaultLib_1 = hasNoDefaultLib_1 || !!sourceFile.hasNoDefaultLib; + collectReferences(sourceFile, refs); + recordTypeReferenceDirectivesIfNecessary(sourceFile.typeReferenceDirectives); + collectLibs(sourceFile, libs); + return sourceFile; + } + return prepend; + })); + bundle.syntheticFileReferences = []; + bundle.syntheticTypeReferences = getFileReferencesForUsedTypeReferences(); + bundle.syntheticLibReferences = getLibReferences(); + bundle.hasNoDefaultLib = hasNoDefaultLib_1; + var outputFilePath_1 = ts.getDirectoryPath(ts.normalizeSlashes(ts.getOutputPathsFor(node, host, /*forceDtsPaths*/ true).declarationFilePath)); + var referenceVisitor_1 = mapReferencesIntoArray(bundle.syntheticFileReferences, outputFilePath_1); + refs.forEach(referenceVisitor_1); + return bundle; + } + // Single source file + needsDeclare = true; + needsScopeFixMarker = false; + resultHasScopeMarker = false; + enclosingDeclaration = node; + currentSourceFile = node; + getSymbolAccessibilityDiagnostic = throwDiagnostic; + isBundledEmit = false; + resultHasExternalModuleIndicator = false; + suppressNewDiagnosticContexts = false; + lateMarkedStatements = undefined; + lateStatementReplacementMap = ts.createMap(); + necessaryTypeReferences = undefined; + refs = collectReferences(currentSourceFile, ts.createMap()); + libs = collectLibs(currentSourceFile, ts.createMap()); + var references = []; + var outputFilePath = ts.getDirectoryPath(ts.normalizeSlashes(ts.getOutputPathsFor(node, host, /*forceDtsPaths*/ true).declarationFilePath)); + var referenceVisitor = mapReferencesIntoArray(references, outputFilePath); + var combinedStatements; + if (ts.isSourceFileJS(currentSourceFile)) { + combinedStatements = ts.createNodeArray(transformDeclarationsForJS(node)); + refs.forEach(referenceVisitor); + emittedImports = ts.filter(combinedStatements, ts.isAnyImportSyntax); + } + else { + var statements = ts.visitNodes(node.statements, visitDeclarationStatements); + combinedStatements = ts.setTextRange(ts.createNodeArray(transformAndReplaceLatePaintedStatements(statements)), node.statements); + refs.forEach(referenceVisitor); + emittedImports = ts.filter(combinedStatements, ts.isAnyImportSyntax); + if (ts.isExternalModule(node) && (!resultHasExternalModuleIndicator || (needsScopeFixMarker && !resultHasScopeMarker))) { + combinedStatements = ts.setTextRange(ts.createNodeArray(__spreadArrays(combinedStatements, [ts.createEmptyExports()])), combinedStatements); + } + } + var updated = ts.updateSourceFileNode(node, combinedStatements, /*isDeclarationFile*/ true, references, getFileReferencesForUsedTypeReferences(), node.hasNoDefaultLib, getLibReferences()); + updated.exportedModulesFromDeclarationEmit = exportedModulesFromDeclarationEmit; + return updated; + function getLibReferences() { + return ts.map(ts.arrayFrom(libs.keys()), function (lib) { return ({ fileName: lib, pos: -1, end: -1 }); }); + } + function getFileReferencesForUsedTypeReferences() { + return necessaryTypeReferences ? ts.mapDefined(ts.arrayFrom(necessaryTypeReferences.keys()), getFileReferenceForTypeName) : []; + } + function getFileReferenceForTypeName(typeName) { + // Elide type references for which we have imports + if (emittedImports) { + for (var _i = 0, emittedImports_1 = emittedImports; _i < emittedImports_1.length; _i++) { + var importStatement = emittedImports_1[_i]; + if (ts.isImportEqualsDeclaration(importStatement) && ts.isExternalModuleReference(importStatement.moduleReference)) { + var expr = importStatement.moduleReference.expression; + if (ts.isStringLiteralLike(expr) && expr.text === typeName) { + return undefined; + } + } + else if (ts.isImportDeclaration(importStatement) && ts.isStringLiteral(importStatement.moduleSpecifier) && importStatement.moduleSpecifier.text === typeName) { + return undefined; + } + } + } + return { fileName: typeName, pos: -1, end: -1 }; + } + function mapReferencesIntoArray(references, outputFilePath) { + return function (file) { + var declFileName; + if (file.isDeclarationFile) { // Neither decl files or js should have their refs changed + declFileName = file.fileName; + } + else { + if (isBundledEmit && ts.contains(node.sourceFiles, file)) + return; // Omit references to files which are being merged + var paths = ts.getOutputPathsFor(file, host, /*forceDtsPaths*/ true); + declFileName = paths.declarationFilePath || paths.jsFilePath || file.fileName; + } + if (declFileName) { + var specifier = ts.moduleSpecifiers.getModuleSpecifier(__assign(__assign({}, options), { baseUrl: options.baseUrl && ts.toPath(options.baseUrl, host.getCurrentDirectory(), host.getCanonicalFileName) }), currentSourceFile, ts.toPath(outputFilePath, host.getCurrentDirectory(), host.getCanonicalFileName), ts.toPath(declFileName, host.getCurrentDirectory(), host.getCanonicalFileName), host, + /*preferences*/ undefined); + if (!ts.pathIsRelative(specifier)) { + // If some compiler option/symlink/whatever allows access to the file containing the ambient module declaration + // via a non-relative name, emit a type reference directive to that non-relative name, rather than + // a relative path to the declaration file + recordTypeReferenceDirectivesIfNecessary([specifier]); + return; + } + var fileName = ts.getRelativePathToDirectoryOrUrl(outputFilePath, declFileName, host.getCurrentDirectory(), host.getCanonicalFileName, + /*isAbsolutePathAnUrl*/ false); + if (ts.startsWith(fileName, "./") && ts.hasExtension(fileName)) { + fileName = fileName.substring(2); + } + // omit references to files from node_modules (npm may disambiguate module + // references when installing this package, making the path is unreliable). + if (ts.startsWith(fileName, "node_modules/") || ts.pathContainsNodeModules(fileName)) { + return; + } + references.push({ pos: -1, end: -1, fileName: fileName }); + } + }; + } + } + function collectReferences(sourceFile, ret) { + if (noResolve || (!ts.isUnparsedSource(sourceFile) && ts.isSourceFileJS(sourceFile))) + return ret; + ts.forEach(sourceFile.referencedFiles, function (f) { + var elem = host.getSourceFileFromReference(sourceFile, f); + if (elem) { + ret.set("" + ts.getOriginalNodeId(elem), elem); + } + }); + return ret; + } + function collectLibs(sourceFile, ret) { + ts.forEach(sourceFile.libReferenceDirectives, function (ref) { + var lib = host.getLibFileFromReference(ref); + if (lib) { + ret.set(ts.toFileNameLowerCase(ref.fileName), true); + } + }); + return ret; + } + function filterBindingPatternInitializers(name) { + if (name.kind === 75 /* Identifier */) { + return name; + } + else { + if (name.kind === 190 /* ArrayBindingPattern */) { + return ts.updateArrayBindingPattern(name, ts.visitNodes(name.elements, visitBindingElement)); + } + else { + return ts.updateObjectBindingPattern(name, ts.visitNodes(name.elements, visitBindingElement)); + } + } + function visitBindingElement(elem) { + if (elem.kind === 215 /* OmittedExpression */) { + return elem; + } + return ts.updateBindingElement(elem, elem.dotDotDotToken, elem.propertyName, filterBindingPatternInitializers(elem.name), shouldPrintWithInitializer(elem) ? elem.initializer : undefined); + } + } + function ensureParameter(p, modifierMask, type) { + var oldDiag; + if (!suppressNewDiagnosticContexts) { + oldDiag = getSymbolAccessibilityDiagnostic; + getSymbolAccessibilityDiagnostic = ts.createGetSymbolAccessibilityDiagnosticForNode(p); + } + var newParam = ts.updateParameter(p, + /*decorators*/ undefined, maskModifiers(p, modifierMask), p.dotDotDotToken, filterBindingPatternInitializers(p.name), resolver.isOptionalParameter(p) ? (p.questionToken || ts.createToken(57 /* QuestionToken */)) : undefined, ensureType(p, type || p.type, /*ignorePrivate*/ true), // Ignore private param props, since this type is going straight back into a param + ensureNoInitializer(p)); + if (!suppressNewDiagnosticContexts) { + getSymbolAccessibilityDiagnostic = oldDiag; + } + return newParam; + } + function shouldPrintWithInitializer(node) { + return canHaveLiteralInitializer(node) && resolver.isLiteralConstDeclaration(ts.getParseTreeNode(node)); // TODO: Make safe + } + function ensureNoInitializer(node) { + if (shouldPrintWithInitializer(node)) { + return resolver.createLiteralConstValue(ts.getParseTreeNode(node), symbolTracker); // TODO: Make safe + } + return undefined; + } + function ensureType(node, type, ignorePrivate) { + if (!ignorePrivate && ts.hasModifier(node, 8 /* Private */)) { + // Private nodes emit no types (except private parameter properties, whose parameter types are actually visible) + return; + } + if (shouldPrintWithInitializer(node)) { + // Literal const declarations will have an initializer ensured rather than a type + return; + } + var shouldUseResolverType = node.kind === 156 /* Parameter */ && + (resolver.isRequiredInitializedParameter(node) || + resolver.isOptionalUninitializedParameterProperty(node)); + if (type && !shouldUseResolverType) { + return ts.visitNode(type, visitDeclarationSubtree); + } + if (!ts.getParseTreeNode(node)) { + return type ? ts.visitNode(type, visitDeclarationSubtree) : ts.createKeywordTypeNode(125 /* AnyKeyword */); + } + if (node.kind === 164 /* SetAccessor */) { + // Set accessors with no associated type node (from it's param or get accessor return) are `any` since they are never contextually typed right now + // (The inferred type here will be void, but the old declaration emitter printed `any`, so this replicates that) + return ts.createKeywordTypeNode(125 /* AnyKeyword */); + } + errorNameNode = node.name; + var oldDiag; + if (!suppressNewDiagnosticContexts) { + oldDiag = getSymbolAccessibilityDiagnostic; + getSymbolAccessibilityDiagnostic = ts.createGetSymbolAccessibilityDiagnosticForNode(node); + } + if (node.kind === 242 /* VariableDeclaration */ || node.kind === 191 /* BindingElement */) { + return cleanup(resolver.createTypeOfDeclaration(node, enclosingDeclaration, declarationEmitNodeBuilderFlags, symbolTracker)); + } + if (node.kind === 156 /* Parameter */ + || node.kind === 159 /* PropertyDeclaration */ + || node.kind === 158 /* PropertySignature */) { + if (!node.initializer) + return cleanup(resolver.createTypeOfDeclaration(node, enclosingDeclaration, declarationEmitNodeBuilderFlags, symbolTracker, shouldUseResolverType)); + return cleanup(resolver.createTypeOfDeclaration(node, enclosingDeclaration, declarationEmitNodeBuilderFlags, symbolTracker, shouldUseResolverType) || resolver.createTypeOfExpression(node.initializer, enclosingDeclaration, declarationEmitNodeBuilderFlags, symbolTracker)); + } + return cleanup(resolver.createReturnTypeOfSignatureDeclaration(node, enclosingDeclaration, declarationEmitNodeBuilderFlags, symbolTracker)); + function cleanup(returnValue) { + errorNameNode = undefined; + if (!suppressNewDiagnosticContexts) { + getSymbolAccessibilityDiagnostic = oldDiag; + } + return returnValue || ts.createKeywordTypeNode(125 /* AnyKeyword */); + } + } + function isDeclarationAndNotVisible(node) { + node = ts.getParseTreeNode(node); + switch (node.kind) { + case 244 /* FunctionDeclaration */: + case 249 /* ModuleDeclaration */: + case 246 /* InterfaceDeclaration */: + case 245 /* ClassDeclaration */: + case 247 /* TypeAliasDeclaration */: + case 248 /* EnumDeclaration */: + return !resolver.isDeclarationVisible(node); + // The following should be doing their own visibility checks based on filtering their members + case 242 /* VariableDeclaration */: + return !getBindingNameVisible(node); + case 253 /* ImportEqualsDeclaration */: + case 254 /* ImportDeclaration */: + case 260 /* ExportDeclaration */: + case 259 /* ExportAssignment */: + return false; + } + return false; + } + function getBindingNameVisible(elem) { + if (ts.isOmittedExpression(elem)) { + return false; + } + if (ts.isBindingPattern(elem.name)) { + // If any child binding pattern element has been marked visible (usually by collect linked aliases), then this is visible + return ts.some(elem.name.elements, getBindingNameVisible); + } + else { + return resolver.isDeclarationVisible(elem); + } + } + function updateParamsList(node, params, modifierMask) { + if (ts.hasModifier(node, 8 /* Private */)) { + return undefined; // TODO: GH#18217 + } + var newParams = ts.map(params, function (p) { return ensureParameter(p, modifierMask); }); + if (!newParams) { + return undefined; // TODO: GH#18217 + } + return ts.createNodeArray(newParams, params.hasTrailingComma); + } + function updateAccessorParamsList(input, isPrivate) { + var newParams; + if (!isPrivate) { + var thisParameter = ts.getThisParameter(input); + if (thisParameter) { + newParams = [ensureParameter(thisParameter)]; + } + } + if (ts.isSetAccessorDeclaration(input)) { + var newValueParameter = void 0; + if (!isPrivate) { + var valueParameter = ts.getSetAccessorValueParameter(input); + if (valueParameter) { + var accessorType = getTypeAnnotationFromAllAccessorDeclarations(input, resolver.getAllAccessorDeclarations(input)); + newValueParameter = ensureParameter(valueParameter, /*modifierMask*/ undefined, accessorType); + } + } + if (!newValueParameter) { + newValueParameter = ts.createParameter( + /*decorators*/ undefined, + /*modifiers*/ undefined, + /*dotDotDotToken*/ undefined, "value"); + } + newParams = ts.append(newParams, newValueParameter); + } + return ts.createNodeArray(newParams || ts.emptyArray); + } + function ensureTypeParams(node, params) { + return ts.hasModifier(node, 8 /* Private */) ? undefined : ts.visitNodes(params, visitDeclarationSubtree); + } + function isEnclosingDeclaration(node) { + return ts.isSourceFile(node) + || ts.isTypeAliasDeclaration(node) + || ts.isModuleDeclaration(node) + || ts.isClassDeclaration(node) + || ts.isInterfaceDeclaration(node) + || ts.isFunctionLike(node) + || ts.isIndexSignatureDeclaration(node) + || ts.isMappedTypeNode(node); + } + function checkEntityNameVisibility(entityName, enclosingDeclaration) { + var visibilityResult = resolver.isEntityNameVisible(entityName, enclosingDeclaration); + handleSymbolAccessibilityError(visibilityResult); + recordTypeReferenceDirectivesIfNecessary(resolver.getTypeReferenceDirectivesForEntityName(entityName)); + } + function preserveJsDoc(updated, original) { + if (ts.hasJSDocNodes(updated) && ts.hasJSDocNodes(original)) { + updated.jsDoc = original.jsDoc; + } + return ts.setCommentRange(updated, ts.getCommentRange(original)); + } + function rewriteModuleSpecifier(parent, input) { + if (!input) + return undefined; // TODO: GH#18217 + resultHasExternalModuleIndicator = resultHasExternalModuleIndicator || (parent.kind !== 249 /* ModuleDeclaration */ && parent.kind !== 188 /* ImportType */); + if (ts.isStringLiteralLike(input)) { + if (isBundledEmit) { + var newName = ts.getExternalModuleNameFromDeclaration(context.getEmitHost(), resolver, parent); + if (newName) { + return ts.createLiteral(newName); + } + } + else { + var symbol = resolver.getSymbolOfExternalModuleSpecifier(input); + if (symbol) { + (exportedModulesFromDeclarationEmit || (exportedModulesFromDeclarationEmit = [])).push(symbol); + } + } + } + return input; + } + function transformImportEqualsDeclaration(decl) { + if (!resolver.isDeclarationVisible(decl)) + return; + if (decl.moduleReference.kind === 265 /* ExternalModuleReference */) { + // Rewrite external module names if necessary + var specifier = ts.getExternalModuleImportEqualsDeclarationExpression(decl); + return ts.updateImportEqualsDeclaration(decl, + /*decorators*/ undefined, decl.modifiers, decl.name, ts.updateExternalModuleReference(decl.moduleReference, rewriteModuleSpecifier(decl, specifier))); + } + else { + var oldDiag = getSymbolAccessibilityDiagnostic; + getSymbolAccessibilityDiagnostic = ts.createGetSymbolAccessibilityDiagnosticForNode(decl); + checkEntityNameVisibility(decl.moduleReference, enclosingDeclaration); + getSymbolAccessibilityDiagnostic = oldDiag; + return decl; + } + } + function transformImportDeclaration(decl) { + if (!decl.importClause) { + // import "mod" - possibly needed for side effects? (global interface patches, module augmentations, etc) + return ts.updateImportDeclaration(decl, + /*decorators*/ undefined, decl.modifiers, decl.importClause, rewriteModuleSpecifier(decl, decl.moduleSpecifier)); + } + // The `importClause` visibility corresponds to the default's visibility. + var visibleDefaultBinding = decl.importClause && decl.importClause.name && resolver.isDeclarationVisible(decl.importClause) ? decl.importClause.name : undefined; + if (!decl.importClause.namedBindings) { + // No named bindings (either namespace or list), meaning the import is just default or should be elided + return visibleDefaultBinding && ts.updateImportDeclaration(decl, /*decorators*/ undefined, decl.modifiers, ts.updateImportClause(decl.importClause, visibleDefaultBinding, + /*namedBindings*/ undefined, decl.importClause.isTypeOnly), rewriteModuleSpecifier(decl, decl.moduleSpecifier)); + } + if (decl.importClause.namedBindings.kind === 256 /* NamespaceImport */) { + // Namespace import (optionally with visible default) + var namedBindings = resolver.isDeclarationVisible(decl.importClause.namedBindings) ? decl.importClause.namedBindings : /*namedBindings*/ undefined; + return visibleDefaultBinding || namedBindings ? ts.updateImportDeclaration(decl, /*decorators*/ undefined, decl.modifiers, ts.updateImportClause(decl.importClause, visibleDefaultBinding, namedBindings, decl.importClause.isTypeOnly), rewriteModuleSpecifier(decl, decl.moduleSpecifier)) : undefined; + } + // Named imports (optionally with visible default) + var bindingList = ts.mapDefined(decl.importClause.namedBindings.elements, function (b) { return resolver.isDeclarationVisible(b) ? b : undefined; }); + if ((bindingList && bindingList.length) || visibleDefaultBinding) { + return ts.updateImportDeclaration(decl, + /*decorators*/ undefined, decl.modifiers, ts.updateImportClause(decl.importClause, visibleDefaultBinding, bindingList && bindingList.length ? ts.updateNamedImports(decl.importClause.namedBindings, bindingList) : undefined, decl.importClause.isTypeOnly), rewriteModuleSpecifier(decl, decl.moduleSpecifier)); + } + // Augmentation of export depends on import + if (resolver.isImportRequiredByAugmentation(decl)) { + return ts.updateImportDeclaration(decl, + /*decorators*/ undefined, decl.modifiers, + /*importClause*/ undefined, rewriteModuleSpecifier(decl, decl.moduleSpecifier)); + } + // Nothing visible + } + function transformAndReplaceLatePaintedStatements(statements) { + // This is a `while` loop because `handleSymbolAccessibilityError` can see additional import aliases marked as visible during + // error handling which must now be included in the output and themselves checked for errors. + // For example: + // ``` + // module A { + // export module Q {} + // import B = Q; + // import C = B; + // export import D = C; + // } + // ``` + // In such a scenario, only Q and D are initially visible, but we don't consider imports as private names - instead we say they if they are referenced they must + // be recorded. So while checking D's visibility we mark C as visible, then we must check C which in turn marks B, completing the chain of + // dependent imports and allowing a valid declaration file output. Today, this dependent alias marking only happens for internal import aliases. + while (ts.length(lateMarkedStatements)) { + var i = lateMarkedStatements.shift(); + if (!ts.isLateVisibilityPaintedStatement(i)) { + return ts.Debug.fail("Late replaced statement was found which is not handled by the declaration transformer!: " + (ts.SyntaxKind ? ts.SyntaxKind[i.kind] : i.kind)); + } + var priorNeedsDeclare = needsDeclare; + needsDeclare = i.parent && ts.isSourceFile(i.parent) && !(ts.isExternalModule(i.parent) && isBundledEmit); + var result = transformTopLevelDeclaration(i); + needsDeclare = priorNeedsDeclare; + lateStatementReplacementMap.set("" + ts.getOriginalNodeId(i), result); + } + // And lastly, we need to get the final form of all those indetermine import declarations from before and add them to the output list + // (and remove them from the set to examine for outter declarations) + return ts.visitNodes(statements, visitLateVisibilityMarkedStatements); + function visitLateVisibilityMarkedStatements(statement) { + if (ts.isLateVisibilityPaintedStatement(statement)) { + var key = "" + ts.getOriginalNodeId(statement); + if (lateStatementReplacementMap.has(key)) { + var result = lateStatementReplacementMap.get(key); + lateStatementReplacementMap.delete(key); + if (result) { + if (ts.isArray(result) ? ts.some(result, ts.needsScopeMarker) : ts.needsScopeMarker(result)) { + // Top-level declarations in .d.ts files are always considered exported even without a modifier unless there's an export assignment or specifier + needsScopeFixMarker = true; + } + if (ts.isSourceFile(statement.parent) && (ts.isArray(result) ? ts.some(result, ts.isExternalModuleIndicator) : ts.isExternalModuleIndicator(result))) { + resultHasExternalModuleIndicator = true; + } + } + return result; + } + } + return statement; + } + } + function visitDeclarationSubtree(input) { + if (shouldStripInternal(input)) + return; + if (ts.isDeclaration(input)) { + if (isDeclarationAndNotVisible(input)) + return; + if (ts.hasDynamicName(input) && !resolver.isLateBound(ts.getParseTreeNode(input))) { + return; + } + } + // Elide implementation signatures from overload sets + if (ts.isFunctionLike(input) && resolver.isImplementationOfOverload(input)) + return; + // Elide semicolon class statements + if (ts.isSemicolonClassElement(input)) + return; + var previousEnclosingDeclaration; + if (isEnclosingDeclaration(input)) { + previousEnclosingDeclaration = enclosingDeclaration; + enclosingDeclaration = input; + } + var oldDiag = getSymbolAccessibilityDiagnostic; + // Setup diagnostic-related flags before first potential `cleanup` call, otherwise + // We'd see a TDZ violation at runtime + var canProduceDiagnostic = ts.canProduceDiagnostics(input); + var oldWithinObjectLiteralType = suppressNewDiagnosticContexts; + var shouldEnterSuppressNewDiagnosticsContextContext = ((input.kind === 173 /* TypeLiteral */ || input.kind === 186 /* MappedType */) && input.parent.kind !== 247 /* TypeAliasDeclaration */); + // Emit methods which are private as properties with no type information + if (ts.isMethodDeclaration(input) || ts.isMethodSignature(input)) { + if (ts.hasModifier(input, 8 /* Private */)) { + if (input.symbol && input.symbol.declarations && input.symbol.declarations[0] !== input) + return; // Elide all but the first overload + return cleanup(ts.createProperty(/*decorators*/ undefined, ensureModifiers(input), input.name, /*questionToken*/ undefined, /*type*/ undefined, /*initializer*/ undefined)); + } + } + if (canProduceDiagnostic && !suppressNewDiagnosticContexts) { + getSymbolAccessibilityDiagnostic = ts.createGetSymbolAccessibilityDiagnosticForNode(input); + } + if (ts.isTypeQueryNode(input)) { + checkEntityNameVisibility(input.exprName, enclosingDeclaration); + } + if (shouldEnterSuppressNewDiagnosticsContextContext) { + // We stop making new diagnostic contexts within object literal types. Unless it's an object type on the RHS of a type alias declaration. Then we do. + suppressNewDiagnosticContexts = true; + } + if (isProcessedComponent(input)) { + switch (input.kind) { + case 216 /* ExpressionWithTypeArguments */: { + if ((ts.isEntityName(input.expression) || ts.isEntityNameExpression(input.expression))) { + checkEntityNameVisibility(input.expression, enclosingDeclaration); + } + var node = ts.visitEachChild(input, visitDeclarationSubtree, context); + return cleanup(ts.updateExpressionWithTypeArguments(node, ts.parenthesizeTypeParameters(node.typeArguments), node.expression)); + } + case 169 /* TypeReference */: { + checkEntityNameVisibility(input.typeName, enclosingDeclaration); + var node = ts.visitEachChild(input, visitDeclarationSubtree, context); + return cleanup(ts.updateTypeReferenceNode(node, node.typeName, ts.parenthesizeTypeParameters(node.typeArguments))); + } + case 166 /* ConstructSignature */: + return cleanup(ts.updateConstructSignature(input, ensureTypeParams(input, input.typeParameters), updateParamsList(input, input.parameters), ensureType(input, input.type))); + case 162 /* Constructor */: { + // A constructor declaration may not have a type annotation + var ctor = ts.createSignatureDeclaration(162 /* Constructor */, ensureTypeParams(input, input.typeParameters), updateParamsList(input, input.parameters, 0 /* None */), + /*type*/ undefined); + ctor.modifiers = ts.createNodeArray(ensureModifiers(input)); + return cleanup(ctor); + } + case 161 /* MethodDeclaration */: { + if (ts.isPrivateIdentifier(input.name)) { + return cleanup(/*returnValue*/ undefined); + } + var sig = ts.createSignatureDeclaration(160 /* MethodSignature */, ensureTypeParams(input, input.typeParameters), updateParamsList(input, input.parameters), ensureType(input, input.type)); + sig.name = input.name; + sig.modifiers = ts.createNodeArray(ensureModifiers(input)); + sig.questionToken = input.questionToken; + return cleanup(sig); + } + case 163 /* GetAccessor */: { + if (ts.isPrivateIdentifier(input.name)) { + return cleanup(/*returnValue*/ undefined); + } + var accessorType = getTypeAnnotationFromAllAccessorDeclarations(input, resolver.getAllAccessorDeclarations(input)); + return cleanup(ts.updateGetAccessor(input, + /*decorators*/ undefined, ensureModifiers(input), input.name, updateAccessorParamsList(input, ts.hasModifier(input, 8 /* Private */)), ensureType(input, accessorType), + /*body*/ undefined)); + } + case 164 /* SetAccessor */: { + if (ts.isPrivateIdentifier(input.name)) { + return cleanup(/*returnValue*/ undefined); + } + return cleanup(ts.updateSetAccessor(input, + /*decorators*/ undefined, ensureModifiers(input), input.name, updateAccessorParamsList(input, ts.hasModifier(input, 8 /* Private */)), + /*body*/ undefined)); + } + case 159 /* PropertyDeclaration */: + if (ts.isPrivateIdentifier(input.name)) { + return cleanup(/*returnValue*/ undefined); + } + return cleanup(ts.updateProperty(input, + /*decorators*/ undefined, ensureModifiers(input), input.name, input.questionToken, ensureType(input, input.type), ensureNoInitializer(input))); + case 158 /* PropertySignature */: + if (ts.isPrivateIdentifier(input.name)) { + return cleanup(/*returnValue*/ undefined); + } + return cleanup(ts.updatePropertySignature(input, ensureModifiers(input), input.name, input.questionToken, ensureType(input, input.type), ensureNoInitializer(input))); + case 160 /* MethodSignature */: { + if (ts.isPrivateIdentifier(input.name)) { + return cleanup(/*returnValue*/ undefined); + } + return cleanup(ts.updateMethodSignature(input, ensureTypeParams(input, input.typeParameters), updateParamsList(input, input.parameters), ensureType(input, input.type), input.name, input.questionToken)); + } + case 165 /* CallSignature */: { + return cleanup(ts.updateCallSignature(input, ensureTypeParams(input, input.typeParameters), updateParamsList(input, input.parameters), ensureType(input, input.type))); + } + case 167 /* IndexSignature */: { + return cleanup(ts.updateIndexSignature(input, + /*decorators*/ undefined, ensureModifiers(input), updateParamsList(input, input.parameters), ts.visitNode(input.type, visitDeclarationSubtree) || ts.createKeywordTypeNode(125 /* AnyKeyword */))); + } + case 242 /* VariableDeclaration */: { + if (ts.isBindingPattern(input.name)) { + return recreateBindingPattern(input.name); + } + shouldEnterSuppressNewDiagnosticsContextContext = true; + suppressNewDiagnosticContexts = true; // Variable declaration types also suppress new diagnostic contexts, provided the contexts wouldn't be made for binding pattern types + return cleanup(ts.updateTypeScriptVariableDeclaration(input, input.name, /*exclaimationToken*/ undefined, ensureType(input, input.type), ensureNoInitializer(input))); + } + case 155 /* TypeParameter */: { + if (isPrivateMethodTypeParameter(input) && (input.default || input.constraint)) { + return cleanup(ts.updateTypeParameterDeclaration(input, input.name, /*constraint*/ undefined, /*defaultType*/ undefined)); + } + return cleanup(ts.visitEachChild(input, visitDeclarationSubtree, context)); + } + case 180 /* ConditionalType */: { + // We have to process conditional types in a special way because for visibility purposes we need to push a new enclosingDeclaration + // just for the `infer` types in the true branch. It's an implicit declaration scope that only applies to _part_ of the type. + var checkType = ts.visitNode(input.checkType, visitDeclarationSubtree); + var extendsType = ts.visitNode(input.extendsType, visitDeclarationSubtree); + var oldEnclosingDecl = enclosingDeclaration; + enclosingDeclaration = input.trueType; + var trueType = ts.visitNode(input.trueType, visitDeclarationSubtree); + enclosingDeclaration = oldEnclosingDecl; + var falseType = ts.visitNode(input.falseType, visitDeclarationSubtree); + return cleanup(ts.updateConditionalTypeNode(input, checkType, extendsType, trueType, falseType)); + } + case 170 /* FunctionType */: { + return cleanup(ts.updateFunctionTypeNode(input, ts.visitNodes(input.typeParameters, visitDeclarationSubtree), updateParamsList(input, input.parameters), ts.visitNode(input.type, visitDeclarationSubtree))); + } + case 171 /* ConstructorType */: { + return cleanup(ts.updateConstructorTypeNode(input, ts.visitNodes(input.typeParameters, visitDeclarationSubtree), updateParamsList(input, input.parameters), ts.visitNode(input.type, visitDeclarationSubtree))); + } + case 188 /* ImportType */: { + if (!ts.isLiteralImportTypeNode(input)) + return cleanup(input); + return cleanup(ts.updateImportTypeNode(input, ts.updateLiteralTypeNode(input.argument, rewriteModuleSpecifier(input, input.argument.literal)), input.qualifier, ts.visitNodes(input.typeArguments, visitDeclarationSubtree, ts.isTypeNode), input.isTypeOf)); + } + default: ts.Debug.assertNever(input, "Attempted to process unhandled node kind: " + ts.SyntaxKind[input.kind]); + } + } + return cleanup(ts.visitEachChild(input, visitDeclarationSubtree, context)); + function cleanup(returnValue) { + if (returnValue && canProduceDiagnostic && ts.hasDynamicName(input)) { + checkName(input); + } + if (isEnclosingDeclaration(input)) { + enclosingDeclaration = previousEnclosingDeclaration; + } + if (canProduceDiagnostic && !suppressNewDiagnosticContexts) { + getSymbolAccessibilityDiagnostic = oldDiag; + } + if (shouldEnterSuppressNewDiagnosticsContextContext) { + suppressNewDiagnosticContexts = oldWithinObjectLiteralType; + } + if (returnValue === input) { + return returnValue; + } + return returnValue && ts.setOriginalNode(preserveJsDoc(returnValue, input), input); + } + } + function isPrivateMethodTypeParameter(node) { + return node.parent.kind === 161 /* MethodDeclaration */ && ts.hasModifier(node.parent, 8 /* Private */); + } + function visitDeclarationStatements(input) { + if (!isPreservedDeclarationStatement(input)) { + // return undefined for unmatched kinds to omit them from the tree + return; + } + if (shouldStripInternal(input)) + return; + switch (input.kind) { + case 260 /* ExportDeclaration */: { + if (ts.isSourceFile(input.parent)) { + resultHasExternalModuleIndicator = true; + } + resultHasScopeMarker = true; + // Always visible if the parent node isn't dropped for being not visible + // Rewrite external module names if necessary + return ts.updateExportDeclaration(input, + /*decorators*/ undefined, input.modifiers, input.exportClause, rewriteModuleSpecifier(input, input.moduleSpecifier), input.isTypeOnly); + } + case 259 /* ExportAssignment */: { + // Always visible if the parent node isn't dropped for being not visible + if (ts.isSourceFile(input.parent)) { + resultHasExternalModuleIndicator = true; + } + resultHasScopeMarker = true; + if (input.expression.kind === 75 /* Identifier */) { + return input; + } + else { + var newId = ts.createOptimisticUniqueName("_default"); + getSymbolAccessibilityDiagnostic = function () { return ({ + diagnosticMessage: ts.Diagnostics.Default_export_of_the_module_has_or_is_using_private_name_0, + errorNode: input + }); }; + var varDecl = ts.createVariableDeclaration(newId, resolver.createTypeOfExpression(input.expression, input, declarationEmitNodeBuilderFlags, symbolTracker), /*initializer*/ undefined); + var statement = ts.createVariableStatement(needsDeclare ? [ts.createModifier(130 /* DeclareKeyword */)] : [], ts.createVariableDeclarationList([varDecl], 2 /* Const */)); + return [statement, ts.updateExportAssignment(input, input.decorators, input.modifiers, newId)]; + } + } + } + var result = transformTopLevelDeclaration(input); + // Don't actually transform yet; just leave as original node - will be elided/swapped by late pass + lateStatementReplacementMap.set("" + ts.getOriginalNodeId(input), result); + return input; + } + function stripExportModifiers(statement) { + if (ts.isImportEqualsDeclaration(statement) || ts.hasModifier(statement, 512 /* Default */)) { + // `export import` statements should remain as-is, as imports are _not_ implicitly exported in an ambient namespace + // Likewise, `export default` classes and the like and just be `default`, so we preserve their `export` modifiers, too + return statement; + } + var clone = ts.getMutableClone(statement); + var modifiers = ts.createModifiersFromModifierFlags(ts.getModifierFlags(statement) & (3071 /* All */ ^ 1 /* Export */)); + clone.modifiers = modifiers.length ? ts.createNodeArray(modifiers) : undefined; + return clone; + } + function transformTopLevelDeclaration(input) { + if (shouldStripInternal(input)) + return; + switch (input.kind) { + case 253 /* ImportEqualsDeclaration */: { + return transformImportEqualsDeclaration(input); + } + case 254 /* ImportDeclaration */: { + return transformImportDeclaration(input); + } + } + if (ts.isDeclaration(input) && isDeclarationAndNotVisible(input)) + return; + // Elide implementation signatures from overload sets + if (ts.isFunctionLike(input) && resolver.isImplementationOfOverload(input)) + return; + var previousEnclosingDeclaration; + if (isEnclosingDeclaration(input)) { + previousEnclosingDeclaration = enclosingDeclaration; + enclosingDeclaration = input; + } + var canProdiceDiagnostic = ts.canProduceDiagnostics(input); + var oldDiag = getSymbolAccessibilityDiagnostic; + if (canProdiceDiagnostic) { + getSymbolAccessibilityDiagnostic = ts.createGetSymbolAccessibilityDiagnosticForNode(input); + } + var previousNeedsDeclare = needsDeclare; + switch (input.kind) { + case 247 /* TypeAliasDeclaration */: // Type aliases get `declare`d if need be (for legacy support), but that's all + return cleanup(ts.updateTypeAliasDeclaration(input, + /*decorators*/ undefined, ensureModifiers(input), input.name, ts.visitNodes(input.typeParameters, visitDeclarationSubtree, ts.isTypeParameterDeclaration), ts.visitNode(input.type, visitDeclarationSubtree, ts.isTypeNode))); + case 246 /* InterfaceDeclaration */: { + return cleanup(ts.updateInterfaceDeclaration(input, + /*decorators*/ undefined, ensureModifiers(input), input.name, ensureTypeParams(input, input.typeParameters), transformHeritageClauses(input.heritageClauses), ts.visitNodes(input.members, visitDeclarationSubtree))); + } + case 244 /* FunctionDeclaration */: { + // Generators lose their generator-ness, excepting their return type + var clean = cleanup(ts.updateFunctionDeclaration(input, + /*decorators*/ undefined, ensureModifiers(input), + /*asteriskToken*/ undefined, input.name, ensureTypeParams(input, input.typeParameters), updateParamsList(input, input.parameters), ensureType(input, input.type), + /*body*/ undefined)); + if (clean && resolver.isExpandoFunctionDeclaration(input)) { + var props = resolver.getPropertiesOfContainerFunction(input); + var fakespace_1 = ts.createModuleDeclaration(/*decorators*/ undefined, /*modifiers*/ undefined, clean.name || ts.createIdentifier("_default"), ts.createModuleBlock([]), 16 /* Namespace */); + fakespace_1.flags ^= 8 /* Synthesized */; // unset synthesized so it is usable as an enclosing declaration + fakespace_1.parent = enclosingDeclaration; + fakespace_1.locals = ts.createSymbolTable(props); + fakespace_1.symbol = props[0].parent; + var declarations = ts.mapDefined(props, function (p) { + if (!ts.isPropertyAccessExpression(p.valueDeclaration)) { + return undefined; // TODO GH#33569: Handle element access expressions that created late bound names (rather than silently omitting them) + } + getSymbolAccessibilityDiagnostic = ts.createGetSymbolAccessibilityDiagnosticForNode(p.valueDeclaration); + var type = resolver.createTypeOfDeclaration(p.valueDeclaration, fakespace_1, declarationEmitNodeBuilderFlags, symbolTracker); + getSymbolAccessibilityDiagnostic = oldDiag; + var varDecl = ts.createVariableDeclaration(ts.unescapeLeadingUnderscores(p.escapedName), type, /*initializer*/ undefined); + return ts.createVariableStatement(/*modifiers*/ undefined, ts.createVariableDeclarationList([varDecl])); + }); + var namespaceDecl = ts.createModuleDeclaration(/*decorators*/ undefined, ensureModifiers(input), input.name, ts.createModuleBlock(declarations), 16 /* Namespace */); + if (!ts.hasModifier(clean, 512 /* Default */)) { + return [clean, namespaceDecl]; + } + var modifiers = ts.createModifiersFromModifierFlags((ts.getModifierFlags(clean) & ~513 /* ExportDefault */) | 2 /* Ambient */); + var cleanDeclaration = ts.updateFunctionDeclaration(clean, + /*decorators*/ undefined, modifiers, + /*asteriskToken*/ undefined, clean.name, clean.typeParameters, clean.parameters, clean.type, + /*body*/ undefined); + var namespaceDeclaration = ts.updateModuleDeclaration(namespaceDecl, + /*decorators*/ undefined, modifiers, namespaceDecl.name, namespaceDecl.body); + var exportDefaultDeclaration = ts.createExportAssignment( + /*decorators*/ undefined, + /*modifiers*/ undefined, + /*isExportEquals*/ false, namespaceDecl.name); + if (ts.isSourceFile(input.parent)) { + resultHasExternalModuleIndicator = true; + } + resultHasScopeMarker = true; + return [cleanDeclaration, namespaceDeclaration, exportDefaultDeclaration]; + } + else { + return clean; + } + } + case 249 /* ModuleDeclaration */: { + needsDeclare = false; + var inner = input.body; + if (inner && inner.kind === 250 /* ModuleBlock */) { + var oldNeedsScopeFix = needsScopeFixMarker; + var oldHasScopeFix = resultHasScopeMarker; + resultHasScopeMarker = false; + needsScopeFixMarker = false; + var statements = ts.visitNodes(inner.statements, visitDeclarationStatements); + var lateStatements = transformAndReplaceLatePaintedStatements(statements); + if (input.flags & 8388608 /* Ambient */) { + needsScopeFixMarker = false; // If it was `declare`'d everything is implicitly exported already, ignore late printed "privates" + } + // With the final list of statements, there are 3 possibilities: + // 1. There's an export assignment or export declaration in the namespace - do nothing + // 2. Everything is exported and there are no export assignments or export declarations - strip all export modifiers + // 3. Some things are exported, some are not, and there's no marker - add an empty marker + if (!ts.isGlobalScopeAugmentation(input) && !hasScopeMarker(lateStatements) && !resultHasScopeMarker) { + if (needsScopeFixMarker) { + lateStatements = ts.createNodeArray(__spreadArrays(lateStatements, [ts.createEmptyExports()])); + } + else { + lateStatements = ts.visitNodes(lateStatements, stripExportModifiers); + } + } + var body = ts.updateModuleBlock(inner, lateStatements); + needsDeclare = previousNeedsDeclare; + needsScopeFixMarker = oldNeedsScopeFix; + resultHasScopeMarker = oldHasScopeFix; + var mods = ensureModifiers(input); + return cleanup(ts.updateModuleDeclaration(input, + /*decorators*/ undefined, mods, ts.isExternalModuleAugmentation(input) ? rewriteModuleSpecifier(input, input.name) : input.name, body)); + } + else { + needsDeclare = previousNeedsDeclare; + var mods = ensureModifiers(input); + needsDeclare = false; + ts.visitNode(inner, visitDeclarationStatements); + // eagerly transform nested namespaces (the nesting doesn't need any elision or painting done) + var id = "" + ts.getOriginalNodeId(inner); // TODO: GH#18217 + var body = lateStatementReplacementMap.get(id); + lateStatementReplacementMap.delete(id); + return cleanup(ts.updateModuleDeclaration(input, + /*decorators*/ undefined, mods, input.name, body)); + } + } + case 245 /* ClassDeclaration */: { + var modifiers = ts.createNodeArray(ensureModifiers(input)); + var typeParameters = ensureTypeParams(input, input.typeParameters); + var ctor = ts.getFirstConstructorWithBody(input); + var parameterProperties = void 0; + if (ctor) { + var oldDiag_1 = getSymbolAccessibilityDiagnostic; + parameterProperties = ts.compact(ts.flatMap(ctor.parameters, function (param) { + if (!ts.hasModifier(param, 92 /* ParameterPropertyModifier */) || shouldStripInternal(param)) + return; + getSymbolAccessibilityDiagnostic = ts.createGetSymbolAccessibilityDiagnosticForNode(param); + if (param.name.kind === 75 /* Identifier */) { + return preserveJsDoc(ts.createProperty( + /*decorators*/ undefined, ensureModifiers(param), param.name, param.questionToken, ensureType(param, param.type), ensureNoInitializer(param)), param); + } + else { + // Pattern - this is currently an error, but we emit declarations for it somewhat correctly + return walkBindingPattern(param.name); + } + function walkBindingPattern(pattern) { + var elems; + for (var _i = 0, _a = pattern.elements; _i < _a.length; _i++) { + var elem = _a[_i]; + if (ts.isOmittedExpression(elem)) + continue; + if (ts.isBindingPattern(elem.name)) { + elems = ts.concatenate(elems, walkBindingPattern(elem.name)); + } + elems = elems || []; + elems.push(ts.createProperty( + /*decorators*/ undefined, ensureModifiers(param), elem.name, + /*questionToken*/ undefined, ensureType(elem, /*type*/ undefined), + /*initializer*/ undefined)); + } + return elems; + } + })); + getSymbolAccessibilityDiagnostic = oldDiag_1; + } + var hasPrivateIdentifier = ts.some(input.members, function (member) { return !!member.name && ts.isPrivateIdentifier(member.name); }); + var privateIdentifier = hasPrivateIdentifier ? [ + ts.createProperty( + /*decorators*/ undefined, + /*modifiers*/ undefined, ts.createPrivateIdentifier("#private"), + /*questionToken*/ undefined, + /*type*/ undefined, + /*initializer*/ undefined) + ] : undefined; + var memberNodes = ts.concatenate(ts.concatenate(privateIdentifier, parameterProperties), ts.visitNodes(input.members, visitDeclarationSubtree)); + var members = ts.createNodeArray(memberNodes); + var extendsClause_1 = ts.getEffectiveBaseTypeNode(input); + if (extendsClause_1 && !ts.isEntityNameExpression(extendsClause_1.expression) && extendsClause_1.expression.kind !== 100 /* NullKeyword */) { + // We must add a temporary declaration for the extends clause expression + var oldId = input.name ? ts.unescapeLeadingUnderscores(input.name.escapedText) : "default"; + var newId_1 = ts.createOptimisticUniqueName(oldId + "_base"); + getSymbolAccessibilityDiagnostic = function () { return ({ + diagnosticMessage: ts.Diagnostics.extends_clause_of_exported_class_0_has_or_is_using_private_name_1, + errorNode: extendsClause_1, + typeName: input.name + }); }; + var varDecl = ts.createVariableDeclaration(newId_1, resolver.createTypeOfExpression(extendsClause_1.expression, input, declarationEmitNodeBuilderFlags, symbolTracker), /*initializer*/ undefined); + var statement = ts.createVariableStatement(needsDeclare ? [ts.createModifier(130 /* DeclareKeyword */)] : [], ts.createVariableDeclarationList([varDecl], 2 /* Const */)); + var heritageClauses = ts.createNodeArray(ts.map(input.heritageClauses, function (clause) { + if (clause.token === 90 /* ExtendsKeyword */) { + var oldDiag_2 = getSymbolAccessibilityDiagnostic; + getSymbolAccessibilityDiagnostic = ts.createGetSymbolAccessibilityDiagnosticForNode(clause.types[0]); + var newClause = ts.updateHeritageClause(clause, ts.map(clause.types, function (t) { return ts.updateExpressionWithTypeArguments(t, ts.visitNodes(t.typeArguments, visitDeclarationSubtree), newId_1); })); + getSymbolAccessibilityDiagnostic = oldDiag_2; + return newClause; + } + return ts.updateHeritageClause(clause, ts.visitNodes(ts.createNodeArray(ts.filter(clause.types, function (t) { return ts.isEntityNameExpression(t.expression) || t.expression.kind === 100 /* NullKeyword */; })), visitDeclarationSubtree)); + })); + return [statement, cleanup(ts.updateClassDeclaration(input, + /*decorators*/ undefined, modifiers, input.name, typeParameters, heritageClauses, members))]; // TODO: GH#18217 + } + else { + var heritageClauses = transformHeritageClauses(input.heritageClauses); + return cleanup(ts.updateClassDeclaration(input, + /*decorators*/ undefined, modifiers, input.name, typeParameters, heritageClauses, members)); + } + } + case 225 /* VariableStatement */: { + return cleanup(transformVariableStatement(input)); + } + case 248 /* EnumDeclaration */: { + return cleanup(ts.updateEnumDeclaration(input, /*decorators*/ undefined, ts.createNodeArray(ensureModifiers(input)), input.name, ts.createNodeArray(ts.mapDefined(input.members, function (m) { + if (shouldStripInternal(m)) + return; + // Rewrite enum values to their constants, if available + var constValue = resolver.getConstantValue(m); + return preserveJsDoc(ts.updateEnumMember(m, m.name, constValue !== undefined ? ts.createLiteral(constValue) : undefined), m); + })))); + } + } + // Anything left unhandled is an error, so this should be unreachable + return ts.Debug.assertNever(input, "Unhandled top-level node in declaration emit: " + ts.SyntaxKind[input.kind]); + function cleanup(node) { + if (isEnclosingDeclaration(input)) { + enclosingDeclaration = previousEnclosingDeclaration; + } + if (canProdiceDiagnostic) { + getSymbolAccessibilityDiagnostic = oldDiag; + } + if (input.kind === 249 /* ModuleDeclaration */) { + needsDeclare = previousNeedsDeclare; + } + if (node === input) { + return node; + } + return node && ts.setOriginalNode(preserveJsDoc(node, input), input); + } + } + function transformVariableStatement(input) { + if (!ts.forEach(input.declarationList.declarations, getBindingNameVisible)) + return; + var nodes = ts.visitNodes(input.declarationList.declarations, visitDeclarationSubtree); + if (!ts.length(nodes)) + return; + return ts.updateVariableStatement(input, ts.createNodeArray(ensureModifiers(input)), ts.updateVariableDeclarationList(input.declarationList, nodes)); + } + function recreateBindingPattern(d) { + return ts.flatten(ts.mapDefined(d.elements, function (e) { return recreateBindingElement(e); })); + } + function recreateBindingElement(e) { + if (e.kind === 215 /* OmittedExpression */) { + return; + } + if (e.name) { + if (!getBindingNameVisible(e)) + return; + if (ts.isBindingPattern(e.name)) { + return recreateBindingPattern(e.name); + } + else { + return ts.createVariableDeclaration(e.name, ensureType(e, /*type*/ undefined), /*initializer*/ undefined); + } + } + } + function checkName(node) { + var oldDiag; + if (!suppressNewDiagnosticContexts) { + oldDiag = getSymbolAccessibilityDiagnostic; + getSymbolAccessibilityDiagnostic = ts.createGetSymbolAccessibilityDiagnosticForNodeName(node); + } + errorNameNode = node.name; + ts.Debug.assert(resolver.isLateBound(ts.getParseTreeNode(node))); // Should only be called with dynamic names + var decl = node; + var entityName = decl.name.expression; + checkEntityNameVisibility(entityName, enclosingDeclaration); + if (!suppressNewDiagnosticContexts) { + getSymbolAccessibilityDiagnostic = oldDiag; + } + errorNameNode = undefined; + } + function shouldStripInternal(node) { + return !!stripInternal && !!node && isInternalDeclaration(node, currentSourceFile); + } + function isScopeMarker(node) { + return ts.isExportAssignment(node) || ts.isExportDeclaration(node); + } + function hasScopeMarker(statements) { + return ts.some(statements, isScopeMarker); + } + function ensureModifiers(node) { + var currentFlags = ts.getModifierFlags(node); + var newFlags = ensureModifierFlags(node); + if (currentFlags === newFlags) { + return node.modifiers; + } + return ts.createModifiersFromModifierFlags(newFlags); + } + function ensureModifierFlags(node) { + var mask = 3071 /* All */ ^ (4 /* Public */ | 256 /* Async */); // No async modifiers in declaration files + var additions = (needsDeclare && !isAlwaysType(node)) ? 2 /* Ambient */ : 0 /* None */; + var parentIsFile = node.parent.kind === 290 /* SourceFile */; + if (!parentIsFile || (isBundledEmit && parentIsFile && ts.isExternalModule(node.parent))) { + mask ^= 2 /* Ambient */; + additions = 0 /* None */; + } + return maskModifierFlags(node, mask, additions); + } + function getTypeAnnotationFromAllAccessorDeclarations(node, accessors) { + var accessorType = getTypeAnnotationFromAccessor(node); + if (!accessorType && node !== accessors.firstAccessor) { + accessorType = getTypeAnnotationFromAccessor(accessors.firstAccessor); + // If we end up pulling the type from the second accessor, we also need to change the diagnostic context to get the expected error message + getSymbolAccessibilityDiagnostic = ts.createGetSymbolAccessibilityDiagnosticForNode(accessors.firstAccessor); + } + if (!accessorType && accessors.secondAccessor && node !== accessors.secondAccessor) { + accessorType = getTypeAnnotationFromAccessor(accessors.secondAccessor); + // If we end up pulling the type from the second accessor, we also need to change the diagnostic context to get the expected error message + getSymbolAccessibilityDiagnostic = ts.createGetSymbolAccessibilityDiagnosticForNode(accessors.secondAccessor); + } + return accessorType; + } + function transformHeritageClauses(nodes) { + return ts.createNodeArray(ts.filter(ts.map(nodes, function (clause) { return ts.updateHeritageClause(clause, ts.visitNodes(ts.createNodeArray(ts.filter(clause.types, function (t) { + return ts.isEntityNameExpression(t.expression) || (clause.token === 90 /* ExtendsKeyword */ && t.expression.kind === 100 /* NullKeyword */); + })), visitDeclarationSubtree)); }), function (clause) { return clause.types && !!clause.types.length; })); + } + } + ts.transformDeclarations = transformDeclarations; + function isAlwaysType(node) { + if (node.kind === 246 /* InterfaceDeclaration */) { + return true; + } + return false; + } + // Elide "public" modifier, as it is the default + function maskModifiers(node, modifierMask, modifierAdditions) { + return ts.createModifiersFromModifierFlags(maskModifierFlags(node, modifierMask, modifierAdditions)); + } + function maskModifierFlags(node, modifierMask, modifierAdditions) { + if (modifierMask === void 0) { modifierMask = 3071 /* All */ ^ 4 /* Public */; } + if (modifierAdditions === void 0) { modifierAdditions = 0 /* None */; } + var flags = (ts.getModifierFlags(node) & modifierMask) | modifierAdditions; + if (flags & 512 /* Default */ && !(flags & 1 /* Export */)) { + // A non-exported default is a nonsequitor - we usually try to remove all export modifiers + // from statements in ambient declarations; but a default export must retain its export modifier to be syntactically valid + flags ^= 1 /* Export */; + } + if (flags & 512 /* Default */ && flags & 2 /* Ambient */) { + flags ^= 2 /* Ambient */; // `declare` is never required alongside `default` (and would be an error if printed) + } + return flags; + } + function getTypeAnnotationFromAccessor(accessor) { + if (accessor) { + return accessor.kind === 163 /* GetAccessor */ + ? accessor.type // Getter - return type + : accessor.parameters.length > 0 + ? accessor.parameters[0].type // Setter parameter type + : undefined; + } + } + function canHaveLiteralInitializer(node) { + switch (node.kind) { + case 159 /* PropertyDeclaration */: + case 158 /* PropertySignature */: + return !ts.hasModifier(node, 8 /* Private */); + case 156 /* Parameter */: + case 242 /* VariableDeclaration */: + return true; + } + return false; + } + function isPreservedDeclarationStatement(node) { + switch (node.kind) { + case 244 /* FunctionDeclaration */: + case 249 /* ModuleDeclaration */: + case 253 /* ImportEqualsDeclaration */: + case 246 /* InterfaceDeclaration */: + case 245 /* ClassDeclaration */: + case 247 /* TypeAliasDeclaration */: + case 248 /* EnumDeclaration */: + case 225 /* VariableStatement */: + case 254 /* ImportDeclaration */: + case 260 /* ExportDeclaration */: + case 259 /* ExportAssignment */: + return true; + } + return false; + } + function isProcessedComponent(node) { + switch (node.kind) { + case 166 /* ConstructSignature */: + case 162 /* Constructor */: + case 161 /* MethodDeclaration */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + case 159 /* PropertyDeclaration */: + case 158 /* PropertySignature */: + case 160 /* MethodSignature */: + case 165 /* CallSignature */: + case 167 /* IndexSignature */: + case 242 /* VariableDeclaration */: + case 155 /* TypeParameter */: + case 216 /* ExpressionWithTypeArguments */: + case 169 /* TypeReference */: + case 180 /* ConditionalType */: + case 170 /* FunctionType */: + case 171 /* ConstructorType */: + case 188 /* ImportType */: + return true; + } + return false; + } +})(ts || (ts = {})); +/* @internal */ +var ts; +(function (ts) { + function getModuleTransformer(moduleKind) { + switch (moduleKind) { + case ts.ModuleKind.ESNext: + case ts.ModuleKind.ES2020: + case ts.ModuleKind.ES2015: + return ts.transformECMAScriptModule; + case ts.ModuleKind.System: + return ts.transformSystemModule; + default: + return ts.transformModule; + } + } + var TransformationState; + (function (TransformationState) { + TransformationState[TransformationState["Uninitialized"] = 0] = "Uninitialized"; + TransformationState[TransformationState["Initialized"] = 1] = "Initialized"; + TransformationState[TransformationState["Completed"] = 2] = "Completed"; + TransformationState[TransformationState["Disposed"] = 3] = "Disposed"; + })(TransformationState || (TransformationState = {})); + var SyntaxKindFeatureFlags; + (function (SyntaxKindFeatureFlags) { + SyntaxKindFeatureFlags[SyntaxKindFeatureFlags["Substitution"] = 1] = "Substitution"; + SyntaxKindFeatureFlags[SyntaxKindFeatureFlags["EmitNotifications"] = 2] = "EmitNotifications"; + })(SyntaxKindFeatureFlags || (SyntaxKindFeatureFlags = {})); + ts.noTransformers = { scriptTransformers: ts.emptyArray, declarationTransformers: ts.emptyArray }; + function getTransformers(compilerOptions, customTransformers, emitOnlyDtsFiles) { + return { + scriptTransformers: getScriptTransformers(compilerOptions, customTransformers, emitOnlyDtsFiles), + declarationTransformers: getDeclarationTransformers(customTransformers), + }; + } + ts.getTransformers = getTransformers; + function getScriptTransformers(compilerOptions, customTransformers, emitOnlyDtsFiles) { + if (emitOnlyDtsFiles) + return ts.emptyArray; + var jsx = compilerOptions.jsx; + var languageVersion = ts.getEmitScriptTarget(compilerOptions); + var moduleKind = ts.getEmitModuleKind(compilerOptions); + var transformers = []; + ts.addRange(transformers, customTransformers && ts.map(customTransformers.before, wrapScriptTransformerFactory)); + transformers.push(ts.transformTypeScript); + transformers.push(ts.transformClassFields); + if (jsx === 2 /* React */) { + transformers.push(ts.transformJsx); + } + if (languageVersion < 99 /* ESNext */) { + transformers.push(ts.transformESNext); + } + if (languageVersion < 7 /* ES2020 */) { + transformers.push(ts.transformES2020); + } + if (languageVersion < 6 /* ES2019 */) { + transformers.push(ts.transformES2019); + } + if (languageVersion < 5 /* ES2018 */) { + transformers.push(ts.transformES2018); + } + if (languageVersion < 4 /* ES2017 */) { + transformers.push(ts.transformES2017); + } + if (languageVersion < 3 /* ES2016 */) { + transformers.push(ts.transformES2016); + } + if (languageVersion < 2 /* ES2015 */) { + transformers.push(ts.transformES2015); + transformers.push(ts.transformGenerators); + } + transformers.push(getModuleTransformer(moduleKind)); + // The ES5 transformer is last so that it can substitute expressions like `exports.default` + // for ES3. + if (languageVersion < 1 /* ES5 */) { + transformers.push(ts.transformES5); + } + ts.addRange(transformers, customTransformers && ts.map(customTransformers.after, wrapScriptTransformerFactory)); + return transformers; + } + function getDeclarationTransformers(customTransformers) { + var transformers = []; + transformers.push(ts.transformDeclarations); + ts.addRange(transformers, customTransformers && ts.map(customTransformers.afterDeclarations, wrapDeclarationTransformerFactory)); + return transformers; + } + /** + * Wrap a custom script or declaration transformer object in a `Transformer` callback with fallback support for transforming bundles. + */ + function wrapCustomTransformer(transformer) { + return function (node) { return ts.isBundle(node) ? transformer.transformBundle(node) : transformer.transformSourceFile(node); }; + } + /** + * Wrap a transformer factory that may return a custom script or declaration transformer object. + */ + function wrapCustomTransformerFactory(transformer, handleDefault) { + return function (context) { + var customTransformer = transformer(context); + return typeof customTransformer === "function" + ? handleDefault(customTransformer) + : wrapCustomTransformer(customTransformer); + }; + } + function wrapScriptTransformerFactory(transformer) { + return wrapCustomTransformerFactory(transformer, ts.chainBundle); + } + function wrapDeclarationTransformerFactory(transformer) { + return wrapCustomTransformerFactory(transformer, ts.identity); + } + function noEmitSubstitution(_hint, node) { + return node; + } + ts.noEmitSubstitution = noEmitSubstitution; + function noEmitNotification(hint, node, callback) { + callback(hint, node); + } + ts.noEmitNotification = noEmitNotification; + /** + * Transforms an array of SourceFiles by passing them through each transformer. + * + * @param resolver The emit resolver provided by the checker. + * @param host The emit host object used to interact with the file system. + * @param options Compiler options to surface in the `TransformationContext`. + * @param nodes An array of nodes to transform. + * @param transforms An array of `TransformerFactory` callbacks. + * @param allowDtsFiles A value indicating whether to allow the transformation of .d.ts files. + */ + function transformNodes(resolver, host, options, nodes, transformers, allowDtsFiles) { + var enabledSyntaxKindFeatures = new Array(331 /* Count */); + var lexicalEnvironmentVariableDeclarations; + var lexicalEnvironmentFunctionDeclarations; + var lexicalEnvironmentStatements; + var lexicalEnvironmentFlags = 0 /* None */; + var lexicalEnvironmentVariableDeclarationsStack = []; + var lexicalEnvironmentFunctionDeclarationsStack = []; + var lexicalEnvironmentStatementsStack = []; + var lexicalEnvironmentFlagsStack = []; + var lexicalEnvironmentStackOffset = 0; + var lexicalEnvironmentSuspended = false; + var emitHelpers; + var onSubstituteNode = noEmitSubstitution; + var onEmitNode = noEmitNotification; + var state = 0 /* Uninitialized */; + var diagnostics = []; + // The transformation context is provided to each transformer as part of transformer + // initialization. + var context = { + getCompilerOptions: function () { return options; }, + getEmitResolver: function () { return resolver; }, + getEmitHost: function () { return host; }, + startLexicalEnvironment: startLexicalEnvironment, + suspendLexicalEnvironment: suspendLexicalEnvironment, + resumeLexicalEnvironment: resumeLexicalEnvironment, + endLexicalEnvironment: endLexicalEnvironment, + setLexicalEnvironmentFlags: setLexicalEnvironmentFlags, + getLexicalEnvironmentFlags: getLexicalEnvironmentFlags, + hoistVariableDeclaration: hoistVariableDeclaration, + hoistFunctionDeclaration: hoistFunctionDeclaration, + addInitializationStatement: addInitializationStatement, + requestEmitHelper: requestEmitHelper, + readEmitHelpers: readEmitHelpers, + enableSubstitution: enableSubstitution, + enableEmitNotification: enableEmitNotification, + isSubstitutionEnabled: isSubstitutionEnabled, + isEmitNotificationEnabled: isEmitNotificationEnabled, + get onSubstituteNode() { return onSubstituteNode; }, + set onSubstituteNode(value) { + ts.Debug.assert(state < 1 /* Initialized */, "Cannot modify transformation hooks after initialization has completed."); + ts.Debug.assert(value !== undefined, "Value must not be 'undefined'"); + onSubstituteNode = value; + }, + get onEmitNode() { return onEmitNode; }, + set onEmitNode(value) { + ts.Debug.assert(state < 1 /* Initialized */, "Cannot modify transformation hooks after initialization has completed."); + ts.Debug.assert(value !== undefined, "Value must not be 'undefined'"); + onEmitNode = value; + }, + addDiagnostic: function (diag) { + diagnostics.push(diag); + } + }; + // Ensure the parse tree is clean before applying transformations + for (var _i = 0, nodes_4 = nodes; _i < nodes_4.length; _i++) { + var node = nodes_4[_i]; + ts.disposeEmitNodes(ts.getSourceFileOfNode(ts.getParseTreeNode(node))); + } + ts.performance.mark("beforeTransform"); + // Chain together and initialize each transformer. + var transformersWithContext = transformers.map(function (t) { return t(context); }); + var transformation = function (node) { + for (var _i = 0, transformersWithContext_1 = transformersWithContext; _i < transformersWithContext_1.length; _i++) { + var transform = transformersWithContext_1[_i]; + node = transform(node); + } + return node; + }; + // prevent modification of transformation hooks. + state = 1 /* Initialized */; + // Transform each node. + var transformed = ts.map(nodes, allowDtsFiles ? transformation : transformRoot); + // prevent modification of the lexical environment. + state = 2 /* Completed */; + ts.performance.mark("afterTransform"); + ts.performance.measure("transformTime", "beforeTransform", "afterTransform"); + return { + transformed: transformed, + substituteNode: substituteNode, + emitNodeWithNotification: emitNodeWithNotification, + isEmitNotificationEnabled: isEmitNotificationEnabled, + dispose: dispose, + diagnostics: diagnostics + }; + function transformRoot(node) { + return node && (!ts.isSourceFile(node) || !node.isDeclarationFile) ? transformation(node) : node; + } + /** + * Enables expression substitutions in the pretty printer for the provided SyntaxKind. + */ + function enableSubstitution(kind) { + ts.Debug.assert(state < 2 /* Completed */, "Cannot modify the transformation context after transformation has completed."); + enabledSyntaxKindFeatures[kind] |= 1 /* Substitution */; + } + /** + * Determines whether expression substitutions are enabled for the provided node. + */ + function isSubstitutionEnabled(node) { + return (enabledSyntaxKindFeatures[node.kind] & 1 /* Substitution */) !== 0 + && (ts.getEmitFlags(node) & 4 /* NoSubstitution */) === 0; + } + /** + * Emits a node with possible substitution. + * + * @param hint A hint as to the intended usage of the node. + * @param node The node to emit. + * @param emitCallback The callback used to emit the node or its substitute. + */ + function substituteNode(hint, node) { + ts.Debug.assert(state < 3 /* Disposed */, "Cannot substitute a node after the result is disposed."); + return node && isSubstitutionEnabled(node) && onSubstituteNode(hint, node) || node; + } + /** + * Enables before/after emit notifications in the pretty printer for the provided SyntaxKind. + */ + function enableEmitNotification(kind) { + ts.Debug.assert(state < 2 /* Completed */, "Cannot modify the transformation context after transformation has completed."); + enabledSyntaxKindFeatures[kind] |= 2 /* EmitNotifications */; + } + /** + * Determines whether before/after emit notifications should be raised in the pretty + * printer when it emits a node. + */ + function isEmitNotificationEnabled(node) { + return (enabledSyntaxKindFeatures[node.kind] & 2 /* EmitNotifications */) !== 0 + || (ts.getEmitFlags(node) & 2 /* AdviseOnEmitNode */) !== 0; + } + /** + * Emits a node with possible emit notification. + * + * @param hint A hint as to the intended usage of the node. + * @param node The node to emit. + * @param emitCallback The callback used to emit the node. + */ + function emitNodeWithNotification(hint, node, emitCallback) { + ts.Debug.assert(state < 3 /* Disposed */, "Cannot invoke TransformationResult callbacks after the result is disposed."); + if (node) { + // TODO: Remove check and unconditionally use onEmitNode when API is breakingly changed + // (see https://github.com/microsoft/TypeScript/pull/36248/files/5062623f39120171b98870c71344b3242eb03d23#r369766739) + if (isEmitNotificationEnabled(node)) { + onEmitNode(hint, node, emitCallback); + } + else { + emitCallback(hint, node); + } + } + } + /** + * Records a hoisted variable declaration for the provided name within a lexical environment. + */ + function hoistVariableDeclaration(name) { + ts.Debug.assert(state > 0 /* Uninitialized */, "Cannot modify the lexical environment during initialization."); + ts.Debug.assert(state < 2 /* Completed */, "Cannot modify the lexical environment after transformation has completed."); + var decl = ts.setEmitFlags(ts.createVariableDeclaration(name), 64 /* NoNestedSourceMaps */); + if (!lexicalEnvironmentVariableDeclarations) { + lexicalEnvironmentVariableDeclarations = [decl]; + } + else { + lexicalEnvironmentVariableDeclarations.push(decl); + } + if (lexicalEnvironmentFlags & 1 /* InParameters */) { + lexicalEnvironmentFlags |= 2 /* VariablesHoistedInParameters */; + } + } + /** + * Records a hoisted function declaration within a lexical environment. + */ + function hoistFunctionDeclaration(func) { + ts.Debug.assert(state > 0 /* Uninitialized */, "Cannot modify the lexical environment during initialization."); + ts.Debug.assert(state < 2 /* Completed */, "Cannot modify the lexical environment after transformation has completed."); + ts.setEmitFlags(func, 1048576 /* CustomPrologue */); + if (!lexicalEnvironmentFunctionDeclarations) { + lexicalEnvironmentFunctionDeclarations = [func]; + } + else { + lexicalEnvironmentFunctionDeclarations.push(func); + } + } + /** + * Adds an initialization statement to the top of the lexical environment. + */ + function addInitializationStatement(node) { + ts.Debug.assert(state > 0 /* Uninitialized */, "Cannot modify the lexical environment during initialization."); + ts.Debug.assert(state < 2 /* Completed */, "Cannot modify the lexical environment after transformation has completed."); + ts.setEmitFlags(node, 1048576 /* CustomPrologue */); + if (!lexicalEnvironmentStatements) { + lexicalEnvironmentStatements = [node]; + } + else { + lexicalEnvironmentStatements.push(node); + } + } + /** + * Starts a new lexical environment. Any existing hoisted variable or function declarations + * are pushed onto a stack, and the related storage variables are reset. + */ + function startLexicalEnvironment() { + ts.Debug.assert(state > 0 /* Uninitialized */, "Cannot modify the lexical environment during initialization."); + ts.Debug.assert(state < 2 /* Completed */, "Cannot modify the lexical environment after transformation has completed."); + ts.Debug.assert(!lexicalEnvironmentSuspended, "Lexical environment is suspended."); + // Save the current lexical environment. Rather than resizing the array we adjust the + // stack size variable. This allows us to reuse existing array slots we've + // already allocated between transformations to avoid allocation and GC overhead during + // transformation. + lexicalEnvironmentVariableDeclarationsStack[lexicalEnvironmentStackOffset] = lexicalEnvironmentVariableDeclarations; + lexicalEnvironmentFunctionDeclarationsStack[lexicalEnvironmentStackOffset] = lexicalEnvironmentFunctionDeclarations; + lexicalEnvironmentStatementsStack[lexicalEnvironmentStackOffset] = lexicalEnvironmentStatements; + lexicalEnvironmentFlagsStack[lexicalEnvironmentStackOffset] = lexicalEnvironmentFlags; + lexicalEnvironmentStackOffset++; + lexicalEnvironmentVariableDeclarations = undefined; + lexicalEnvironmentFunctionDeclarations = undefined; + lexicalEnvironmentStatements = undefined; + lexicalEnvironmentFlags = 0 /* None */; + } + /** Suspends the current lexical environment, usually after visiting a parameter list. */ + function suspendLexicalEnvironment() { + ts.Debug.assert(state > 0 /* Uninitialized */, "Cannot modify the lexical environment during initialization."); + ts.Debug.assert(state < 2 /* Completed */, "Cannot modify the lexical environment after transformation has completed."); + ts.Debug.assert(!lexicalEnvironmentSuspended, "Lexical environment is already suspended."); + lexicalEnvironmentSuspended = true; + } + /** Resumes a suspended lexical environment, usually before visiting a function body. */ + function resumeLexicalEnvironment() { + ts.Debug.assert(state > 0 /* Uninitialized */, "Cannot modify the lexical environment during initialization."); + ts.Debug.assert(state < 2 /* Completed */, "Cannot modify the lexical environment after transformation has completed."); + ts.Debug.assert(lexicalEnvironmentSuspended, "Lexical environment is not suspended."); + lexicalEnvironmentSuspended = false; + } + /** + * Ends a lexical environment. The previous set of hoisted declarations are restored and + * any hoisted declarations added in this environment are returned. + */ + function endLexicalEnvironment() { + ts.Debug.assert(state > 0 /* Uninitialized */, "Cannot modify the lexical environment during initialization."); + ts.Debug.assert(state < 2 /* Completed */, "Cannot modify the lexical environment after transformation has completed."); + ts.Debug.assert(!lexicalEnvironmentSuspended, "Lexical environment is suspended."); + var statements; + if (lexicalEnvironmentVariableDeclarations || + lexicalEnvironmentFunctionDeclarations || + lexicalEnvironmentStatements) { + if (lexicalEnvironmentFunctionDeclarations) { + statements = __spreadArrays(lexicalEnvironmentFunctionDeclarations); + } + if (lexicalEnvironmentVariableDeclarations) { + var statement = ts.createVariableStatement( + /*modifiers*/ undefined, ts.createVariableDeclarationList(lexicalEnvironmentVariableDeclarations)); + ts.setEmitFlags(statement, 1048576 /* CustomPrologue */); + if (!statements) { + statements = [statement]; + } + else { + statements.push(statement); + } + } + if (lexicalEnvironmentStatements) { + if (!statements) { + statements = __spreadArrays(lexicalEnvironmentStatements); + } + else { + statements = __spreadArrays(statements, lexicalEnvironmentStatements); + } + } + } + // Restore the previous lexical environment. + lexicalEnvironmentStackOffset--; + lexicalEnvironmentVariableDeclarations = lexicalEnvironmentVariableDeclarationsStack[lexicalEnvironmentStackOffset]; + lexicalEnvironmentFunctionDeclarations = lexicalEnvironmentFunctionDeclarationsStack[lexicalEnvironmentStackOffset]; + lexicalEnvironmentStatements = lexicalEnvironmentStatementsStack[lexicalEnvironmentStackOffset]; + lexicalEnvironmentFlags = lexicalEnvironmentFlagsStack[lexicalEnvironmentStackOffset]; + if (lexicalEnvironmentStackOffset === 0) { + lexicalEnvironmentVariableDeclarationsStack = []; + lexicalEnvironmentFunctionDeclarationsStack = []; + lexicalEnvironmentStatementsStack = []; + lexicalEnvironmentFlagsStack = []; + } + return statements; + } + function setLexicalEnvironmentFlags(flags, value) { + lexicalEnvironmentFlags = value ? + lexicalEnvironmentFlags | flags : + lexicalEnvironmentFlags & ~flags; + } + function getLexicalEnvironmentFlags() { + return lexicalEnvironmentFlags; + } + function requestEmitHelper(helper) { + ts.Debug.assert(state > 0 /* Uninitialized */, "Cannot modify the transformation context during initialization."); + ts.Debug.assert(state < 2 /* Completed */, "Cannot modify the transformation context after transformation has completed."); + ts.Debug.assert(!helper.scoped, "Cannot request a scoped emit helper."); + if (helper.dependencies) { + for (var _i = 0, _a = helper.dependencies; _i < _a.length; _i++) { + var h = _a[_i]; + requestEmitHelper(h); + } + } + emitHelpers = ts.append(emitHelpers, helper); + } + function readEmitHelpers() { + ts.Debug.assert(state > 0 /* Uninitialized */, "Cannot modify the transformation context during initialization."); + ts.Debug.assert(state < 2 /* Completed */, "Cannot modify the transformation context after transformation has completed."); + var helpers = emitHelpers; + emitHelpers = undefined; + return helpers; + } + function dispose() { + if (state < 3 /* Disposed */) { + // Clean up emit nodes on parse tree + for (var _i = 0, nodes_5 = nodes; _i < nodes_5.length; _i++) { + var node = nodes_5[_i]; + ts.disposeEmitNodes(ts.getSourceFileOfNode(ts.getParseTreeNode(node))); + } + // Release references to external entries for GC purposes. + lexicalEnvironmentVariableDeclarations = undefined; + lexicalEnvironmentVariableDeclarationsStack = undefined; + lexicalEnvironmentFunctionDeclarations = undefined; + lexicalEnvironmentFunctionDeclarationsStack = undefined; + onSubstituteNode = undefined; + onEmitNode = undefined; + emitHelpers = undefined; + // Prevent further use of the transformation result. + state = 3 /* Disposed */; + } + } + } + ts.transformNodes = transformNodes; +})(ts || (ts = {})); +var ts; +(function (ts) { + var brackets = createBracketsMap(); + var syntheticParent = { pos: -1, end: -1 }; + /*@internal*/ + function isBuildInfoFile(file) { + return ts.fileExtensionIs(file, ".tsbuildinfo" /* TsBuildInfo */); + } + ts.isBuildInfoFile = isBuildInfoFile; + /*@internal*/ + /** + * Iterates over the source files that are expected to have an emit output. + * + * @param host An EmitHost. + * @param action The action to execute. + * @param sourceFilesOrTargetSourceFile + * If an array, the full list of source files to emit. + * Else, calls `getSourceFilesToEmit` with the (optional) target source file to determine the list of source files to emit. + */ + function forEachEmittedFile(host, action, sourceFilesOrTargetSourceFile, forceDtsEmit, onlyBuildInfo, includeBuildInfo) { + if (forceDtsEmit === void 0) { forceDtsEmit = false; } + var sourceFiles = ts.isArray(sourceFilesOrTargetSourceFile) ? sourceFilesOrTargetSourceFile : ts.getSourceFilesToEmit(host, sourceFilesOrTargetSourceFile, forceDtsEmit); + var options = host.getCompilerOptions(); + if (options.outFile || options.out) { + var prepends = host.getPrependNodes(); + if (sourceFiles.length || prepends.length) { + var bundle = ts.createBundle(sourceFiles, prepends); + var result = action(getOutputPathsFor(bundle, host, forceDtsEmit), bundle); + if (result) { + return result; + } + } + } + else { + if (!onlyBuildInfo) { + for (var _a = 0, sourceFiles_1 = sourceFiles; _a < sourceFiles_1.length; _a++) { + var sourceFile = sourceFiles_1[_a]; + var result = action(getOutputPathsFor(sourceFile, host, forceDtsEmit), sourceFile); + if (result) { + return result; + } + } + } + if (includeBuildInfo) { + var buildInfoPath = getTsBuildInfoEmitOutputFilePath(host.getCompilerOptions()); + if (buildInfoPath) + return action({ buildInfoPath: buildInfoPath }, /*sourceFileOrBundle*/ undefined); + } + } + } + ts.forEachEmittedFile = forEachEmittedFile; + function getTsBuildInfoEmitOutputFilePath(options) { + var configFile = options.configFilePath; + if (!ts.isIncrementalCompilation(options)) + return undefined; + if (options.tsBuildInfoFile) + return options.tsBuildInfoFile; + var outPath = options.outFile || options.out; + var buildInfoExtensionLess; + if (outPath) { + buildInfoExtensionLess = ts.removeFileExtension(outPath); + } + else { + if (!configFile) + return undefined; + var configFileExtensionLess = ts.removeFileExtension(configFile); + buildInfoExtensionLess = options.outDir ? + options.rootDir ? + ts.resolvePath(options.outDir, ts.getRelativePathFromDirectory(options.rootDir, configFileExtensionLess, /*ignoreCase*/ true)) : + ts.combinePaths(options.outDir, ts.getBaseFileName(configFileExtensionLess)) : + configFileExtensionLess; + } + return buildInfoExtensionLess + ".tsbuildinfo" /* TsBuildInfo */; + } + ts.getTsBuildInfoEmitOutputFilePath = getTsBuildInfoEmitOutputFilePath; + /*@internal*/ + function getOutputPathsForBundle(options, forceDtsPaths) { + var outPath = options.outFile || options.out; + var jsFilePath = options.emitDeclarationOnly ? undefined : outPath; + var sourceMapFilePath = jsFilePath && getSourceMapFilePath(jsFilePath, options); + var declarationFilePath = (forceDtsPaths || ts.getEmitDeclarations(options)) ? ts.removeFileExtension(outPath) + ".d.ts" /* Dts */ : undefined; + var declarationMapPath = declarationFilePath && ts.getAreDeclarationMapsEnabled(options) ? declarationFilePath + ".map" : undefined; + var buildInfoPath = getTsBuildInfoEmitOutputFilePath(options); + return { jsFilePath: jsFilePath, sourceMapFilePath: sourceMapFilePath, declarationFilePath: declarationFilePath, declarationMapPath: declarationMapPath, buildInfoPath: buildInfoPath }; + } + ts.getOutputPathsForBundle = getOutputPathsForBundle; + /*@internal*/ + function getOutputPathsFor(sourceFile, host, forceDtsPaths) { + var options = host.getCompilerOptions(); + if (sourceFile.kind === 291 /* Bundle */) { + return getOutputPathsForBundle(options, forceDtsPaths); + } + else { + var ownOutputFilePath = ts.getOwnEmitOutputFilePath(sourceFile.fileName, host, getOutputExtension(sourceFile, options)); + var isJsonFile = ts.isJsonSourceFile(sourceFile); + // If json file emits to the same location skip writing it, if emitDeclarationOnly skip writing it + var isJsonEmittedToSameLocation = isJsonFile && + ts.comparePaths(sourceFile.fileName, ownOutputFilePath, host.getCurrentDirectory(), !host.useCaseSensitiveFileNames()) === 0 /* EqualTo */; + var jsFilePath = options.emitDeclarationOnly || isJsonEmittedToSameLocation ? undefined : ownOutputFilePath; + var sourceMapFilePath = !jsFilePath || ts.isJsonSourceFile(sourceFile) ? undefined : getSourceMapFilePath(jsFilePath, options); + var declarationFilePath = (forceDtsPaths || (ts.getEmitDeclarations(options) && !isJsonFile)) ? ts.getDeclarationEmitOutputFilePath(sourceFile.fileName, host) : undefined; + var declarationMapPath = declarationFilePath && ts.getAreDeclarationMapsEnabled(options) ? declarationFilePath + ".map" : undefined; + return { jsFilePath: jsFilePath, sourceMapFilePath: sourceMapFilePath, declarationFilePath: declarationFilePath, declarationMapPath: declarationMapPath, buildInfoPath: undefined }; + } + } + ts.getOutputPathsFor = getOutputPathsFor; + function getSourceMapFilePath(jsFilePath, options) { + return (options.sourceMap && !options.inlineSourceMap) ? jsFilePath + ".map" : undefined; + } + // JavaScript files are always LanguageVariant.JSX, as JSX syntax is allowed in .js files also. + // So for JavaScript files, '.jsx' is only emitted if the input was '.jsx', and JsxEmit.Preserve. + // For TypeScript, the only time to emit with a '.jsx' extension, is on JSX input, and JsxEmit.Preserve + /* @internal */ + function getOutputExtension(sourceFile, options) { + if (ts.isJsonSourceFile(sourceFile)) { + return ".json" /* Json */; + } + if (options.jsx === 1 /* Preserve */) { + if (ts.isSourceFileJS(sourceFile)) { + if (ts.fileExtensionIs(sourceFile.fileName, ".jsx" /* Jsx */)) { + return ".jsx" /* Jsx */; + } + } + else if (sourceFile.languageVariant === 1 /* JSX */) { + // TypeScript source file preserving JSX syntax + return ".jsx" /* Jsx */; + } + } + return ".js" /* Js */; + } + ts.getOutputExtension = getOutputExtension; + function rootDirOfOptions(configFile) { + return configFile.options.rootDir || ts.getDirectoryPath(ts.Debug.checkDefined(configFile.options.configFilePath)); + } + function getOutputPathWithoutChangingExt(inputFileName, configFile, ignoreCase, outputDir) { + return outputDir ? + ts.resolvePath(outputDir, ts.getRelativePathFromDirectory(rootDirOfOptions(configFile), inputFileName, ignoreCase)) : + inputFileName; + } + /* @internal */ + function getOutputDeclarationFileName(inputFileName, configFile, ignoreCase) { + ts.Debug.assert(!ts.fileExtensionIs(inputFileName, ".d.ts" /* Dts */) && !ts.fileExtensionIs(inputFileName, ".json" /* Json */)); + return ts.changeExtension(getOutputPathWithoutChangingExt(inputFileName, configFile, ignoreCase, configFile.options.declarationDir || configFile.options.outDir), ".d.ts" /* Dts */); + } + ts.getOutputDeclarationFileName = getOutputDeclarationFileName; + function getOutputJSFileName(inputFileName, configFile, ignoreCase) { + if (configFile.options.emitDeclarationOnly) + return undefined; + var isJsonFile = ts.fileExtensionIs(inputFileName, ".json" /* Json */); + var outputFileName = ts.changeExtension(getOutputPathWithoutChangingExt(inputFileName, configFile, ignoreCase, configFile.options.outDir), isJsonFile ? + ".json" /* Json */ : + ts.fileExtensionIs(inputFileName, ".tsx" /* Tsx */) && configFile.options.jsx === 1 /* Preserve */ ? + ".jsx" /* Jsx */ : + ".js" /* Js */); + return !isJsonFile || ts.comparePaths(inputFileName, outputFileName, ts.Debug.checkDefined(configFile.options.configFilePath), ignoreCase) !== 0 /* EqualTo */ ? + outputFileName : + undefined; + } + function createAddOutput() { + var outputs; + return { addOutput: addOutput, getOutputs: getOutputs }; + function addOutput(path) { + if (path) { + (outputs || (outputs = [])).push(path); + } + } + function getOutputs() { + return outputs || ts.emptyArray; + } + } + function getSingleOutputFileNames(configFile, addOutput) { + var _a = getOutputPathsForBundle(configFile.options, /*forceDtsPaths*/ false), jsFilePath = _a.jsFilePath, sourceMapFilePath = _a.sourceMapFilePath, declarationFilePath = _a.declarationFilePath, declarationMapPath = _a.declarationMapPath, buildInfoPath = _a.buildInfoPath; + addOutput(jsFilePath); + addOutput(sourceMapFilePath); + addOutput(declarationFilePath); + addOutput(declarationMapPath); + addOutput(buildInfoPath); + } + function getOwnOutputFileNames(configFile, inputFileName, ignoreCase, addOutput) { + if (ts.fileExtensionIs(inputFileName, ".d.ts" /* Dts */)) + return; + var js = getOutputJSFileName(inputFileName, configFile, ignoreCase); + addOutput(js); + if (ts.fileExtensionIs(inputFileName, ".json" /* Json */)) + return; + if (js && configFile.options.sourceMap) { + addOutput(js + ".map"); + } + if (ts.getEmitDeclarations(configFile.options)) { + var dts = getOutputDeclarationFileName(inputFileName, configFile, ignoreCase); + addOutput(dts); + if (configFile.options.declarationMap) { + addOutput(dts + ".map"); + } + } + } + /*@internal*/ + function getAllProjectOutputs(configFile, ignoreCase) { + var _a = createAddOutput(), addOutput = _a.addOutput, getOutputs = _a.getOutputs; + if (configFile.options.outFile || configFile.options.out) { + getSingleOutputFileNames(configFile, addOutput); + } + else { + for (var _b = 0, _c = configFile.fileNames; _b < _c.length; _b++) { + var inputFileName = _c[_b]; + getOwnOutputFileNames(configFile, inputFileName, ignoreCase, addOutput); + } + addOutput(getTsBuildInfoEmitOutputFilePath(configFile.options)); + } + return getOutputs(); + } + ts.getAllProjectOutputs = getAllProjectOutputs; + function getOutputFileNames(commandLine, inputFileName, ignoreCase) { + inputFileName = ts.normalizePath(inputFileName); + ts.Debug.assert(ts.contains(commandLine.fileNames, inputFileName), "Expected fileName to be present in command line"); + var _a = createAddOutput(), addOutput = _a.addOutput, getOutputs = _a.getOutputs; + if (commandLine.options.outFile || commandLine.options.out) { + getSingleOutputFileNames(commandLine, addOutput); + } + else { + getOwnOutputFileNames(commandLine, inputFileName, ignoreCase, addOutput); + } + return getOutputs(); + } + ts.getOutputFileNames = getOutputFileNames; + /*@internal*/ + function getFirstProjectOutput(configFile, ignoreCase) { + if (configFile.options.outFile || configFile.options.out) { + var jsFilePath = getOutputPathsForBundle(configFile.options, /*forceDtsPaths*/ false).jsFilePath; + return ts.Debug.checkDefined(jsFilePath, "project " + configFile.options.configFilePath + " expected to have at least one output"); + } + for (var _a = 0, _b = configFile.fileNames; _a < _b.length; _a++) { + var inputFileName = _b[_a]; + if (ts.fileExtensionIs(inputFileName, ".d.ts" /* Dts */)) + continue; + var jsFilePath = getOutputJSFileName(inputFileName, configFile, ignoreCase); + if (jsFilePath) + return jsFilePath; + if (ts.fileExtensionIs(inputFileName, ".json" /* Json */)) + continue; + if (ts.getEmitDeclarations(configFile.options)) { + return getOutputDeclarationFileName(inputFileName, configFile, ignoreCase); + } + } + var buildInfoPath = getTsBuildInfoEmitOutputFilePath(configFile.options); + if (buildInfoPath) + return buildInfoPath; + return ts.Debug.fail("project " + configFile.options.configFilePath + " expected to have at least one output"); + } + ts.getFirstProjectOutput = getFirstProjectOutput; + /*@internal*/ + // targetSourceFile is when users only want one file in entire project to be emitted. This is used in compileOnSave feature + function emitFiles(resolver, host, targetSourceFile, _a, emitOnlyDtsFiles, onlyBuildInfo, forceDtsEmit) { + var scriptTransformers = _a.scriptTransformers, declarationTransformers = _a.declarationTransformers; + var compilerOptions = host.getCompilerOptions(); + var sourceMapDataList = (compilerOptions.sourceMap || compilerOptions.inlineSourceMap || ts.getAreDeclarationMapsEnabled(compilerOptions)) ? [] : undefined; + var emittedFilesList = compilerOptions.listEmittedFiles ? [] : undefined; + var emitterDiagnostics = ts.createDiagnosticCollection(); + var newLine = ts.getNewLineCharacter(compilerOptions, function () { return host.getNewLine(); }); + var writer = ts.createTextWriter(newLine); + var _b = ts.performance.createTimer("printTime", "beforePrint", "afterPrint"), enter = _b.enter, exit = _b.exit; + var bundleBuildInfo; + var emitSkipped = false; + var exportedModulesFromDeclarationEmit; + // Emit each output file + enter(); + forEachEmittedFile(host, emitSourceFileOrBundle, ts.getSourceFilesToEmit(host, targetSourceFile, forceDtsEmit), forceDtsEmit, onlyBuildInfo, !targetSourceFile); + exit(); + return { + emitSkipped: emitSkipped, + diagnostics: emitterDiagnostics.getDiagnostics(), + emittedFiles: emittedFilesList, + sourceMaps: sourceMapDataList, + exportedModulesFromDeclarationEmit: exportedModulesFromDeclarationEmit + }; + function emitSourceFileOrBundle(_a, sourceFileOrBundle) { + var jsFilePath = _a.jsFilePath, sourceMapFilePath = _a.sourceMapFilePath, declarationFilePath = _a.declarationFilePath, declarationMapPath = _a.declarationMapPath, buildInfoPath = _a.buildInfoPath; + var buildInfoDirectory; + if (buildInfoPath && sourceFileOrBundle && ts.isBundle(sourceFileOrBundle)) { + buildInfoDirectory = ts.getDirectoryPath(ts.getNormalizedAbsolutePath(buildInfoPath, host.getCurrentDirectory())); + bundleBuildInfo = { + commonSourceDirectory: relativeToBuildInfo(host.getCommonSourceDirectory()), + sourceFiles: sourceFileOrBundle.sourceFiles.map(function (file) { return relativeToBuildInfo(ts.getNormalizedAbsolutePath(file.fileName, host.getCurrentDirectory())); }) + }; + } + emitJsFileOrBundle(sourceFileOrBundle, jsFilePath, sourceMapFilePath, relativeToBuildInfo); + emitDeclarationFileOrBundle(sourceFileOrBundle, declarationFilePath, declarationMapPath, relativeToBuildInfo); + emitBuildInfo(bundleBuildInfo, buildInfoPath); + if (!emitSkipped && emittedFilesList) { + if (!emitOnlyDtsFiles) { + if (jsFilePath) { + emittedFilesList.push(jsFilePath); + } + if (sourceMapFilePath) { + emittedFilesList.push(sourceMapFilePath); + } + if (buildInfoPath) { + emittedFilesList.push(buildInfoPath); + } + } + if (declarationFilePath) { + emittedFilesList.push(declarationFilePath); + } + if (declarationMapPath) { + emittedFilesList.push(declarationMapPath); + } + } + function relativeToBuildInfo(path) { + return ts.ensurePathIsNonModuleName(ts.getRelativePathFromDirectory(buildInfoDirectory, path, host.getCanonicalFileName)); + } + } + function emitBuildInfo(bundle, buildInfoPath) { + // Write build information if applicable + if (!buildInfoPath || targetSourceFile || emitSkipped) + return; + var program = host.getProgramBuildInfo(); + if (host.isEmitBlocked(buildInfoPath) || compilerOptions.noEmit) { + emitSkipped = true; + return; + } + var version = ts.version; // Extracted into a const so the form is stable between namespace and module + ts.writeFile(host, emitterDiagnostics, buildInfoPath, getBuildInfoText({ bundle: bundle, program: program, version: version }), /*writeByteOrderMark*/ false); + } + function emitJsFileOrBundle(sourceFileOrBundle, jsFilePath, sourceMapFilePath, relativeToBuildInfo) { + if (!sourceFileOrBundle || emitOnlyDtsFiles || !jsFilePath) { + return; + } + // Make sure not to write js file and source map file if any of them cannot be written + if ((jsFilePath && host.isEmitBlocked(jsFilePath)) || compilerOptions.noEmit) { + emitSkipped = true; + return; + } + // Transform the source files + var transform = ts.transformNodes(resolver, host, compilerOptions, [sourceFileOrBundle], scriptTransformers, /*allowDtsFiles*/ false); + var printerOptions = { + removeComments: compilerOptions.removeComments, + newLine: compilerOptions.newLine, + noEmitHelpers: compilerOptions.noEmitHelpers, + module: compilerOptions.module, + target: compilerOptions.target, + sourceMap: compilerOptions.sourceMap, + inlineSourceMap: compilerOptions.inlineSourceMap, + inlineSources: compilerOptions.inlineSources, + extendedDiagnostics: compilerOptions.extendedDiagnostics, + writeBundleFileInfo: !!bundleBuildInfo, + relativeToBuildInfo: relativeToBuildInfo + }; + // Create a printer to print the nodes + var printer = createPrinter(printerOptions, { + // resolver hooks + hasGlobalName: resolver.hasGlobalName, + // transform hooks + onEmitNode: transform.emitNodeWithNotification, + isEmitNotificationEnabled: transform.isEmitNotificationEnabled, + substituteNode: transform.substituteNode, + }); + ts.Debug.assert(transform.transformed.length === 1, "Should only see one output from the transform"); + printSourceFileOrBundle(jsFilePath, sourceMapFilePath, transform.transformed[0], printer, compilerOptions); + // Clean up emit nodes on parse tree + transform.dispose(); + if (bundleBuildInfo) + bundleBuildInfo.js = printer.bundleFileInfo; + } + function emitDeclarationFileOrBundle(sourceFileOrBundle, declarationFilePath, declarationMapPath, relativeToBuildInfo) { + if (!sourceFileOrBundle) + return; + if (!declarationFilePath) { + if (emitOnlyDtsFiles || compilerOptions.emitDeclarationOnly) + emitSkipped = true; + return; + } + var sourceFiles = ts.isSourceFile(sourceFileOrBundle) ? [sourceFileOrBundle] : sourceFileOrBundle.sourceFiles; + var filesForEmit = forceDtsEmit ? sourceFiles : ts.filter(sourceFiles, ts.isSourceFileNotJson); + // Setup and perform the transformation to retrieve declarations from the input files + var inputListOrBundle = (compilerOptions.outFile || compilerOptions.out) ? [ts.createBundle(filesForEmit, !ts.isSourceFile(sourceFileOrBundle) ? sourceFileOrBundle.prepends : undefined)] : filesForEmit; + if (emitOnlyDtsFiles && !ts.getEmitDeclarations(compilerOptions)) { + // Checker wont collect the linked aliases since thats only done when declaration is enabled. + // Do that here when emitting only dts files + filesForEmit.forEach(collectLinkedAliases); + } + var declarationTransform = ts.transformNodes(resolver, host, compilerOptions, inputListOrBundle, declarationTransformers, /*allowDtsFiles*/ false); + if (ts.length(declarationTransform.diagnostics)) { + for (var _a = 0, _b = declarationTransform.diagnostics; _a < _b.length; _a++) { + var diagnostic = _b[_a]; + emitterDiagnostics.add(diagnostic); + } + } + var printerOptions = { + removeComments: compilerOptions.removeComments, + newLine: compilerOptions.newLine, + noEmitHelpers: true, + module: compilerOptions.module, + target: compilerOptions.target, + sourceMap: compilerOptions.sourceMap, + inlineSourceMap: compilerOptions.inlineSourceMap, + extendedDiagnostics: compilerOptions.extendedDiagnostics, + onlyPrintJsDocStyle: true, + writeBundleFileInfo: !!bundleBuildInfo, + recordInternalSection: !!bundleBuildInfo, + relativeToBuildInfo: relativeToBuildInfo + }; + var declarationPrinter = createPrinter(printerOptions, { + // resolver hooks + hasGlobalName: resolver.hasGlobalName, + // transform hooks + onEmitNode: declarationTransform.emitNodeWithNotification, + isEmitNotificationEnabled: declarationTransform.isEmitNotificationEnabled, + substituteNode: declarationTransform.substituteNode, + }); + var declBlocked = (!!declarationTransform.diagnostics && !!declarationTransform.diagnostics.length) || !!host.isEmitBlocked(declarationFilePath) || !!compilerOptions.noEmit; + emitSkipped = emitSkipped || declBlocked; + if (!declBlocked || forceDtsEmit) { + ts.Debug.assert(declarationTransform.transformed.length === 1, "Should only see one output from the decl transform"); + printSourceFileOrBundle(declarationFilePath, declarationMapPath, declarationTransform.transformed[0], declarationPrinter, { + sourceMap: compilerOptions.declarationMap, + sourceRoot: compilerOptions.sourceRoot, + mapRoot: compilerOptions.mapRoot, + extendedDiagnostics: compilerOptions.extendedDiagnostics, + }); + if (forceDtsEmit && declarationTransform.transformed[0].kind === 290 /* SourceFile */) { + var sourceFile = declarationTransform.transformed[0]; + exportedModulesFromDeclarationEmit = sourceFile.exportedModulesFromDeclarationEmit; + } + } + declarationTransform.dispose(); + if (bundleBuildInfo) + bundleBuildInfo.dts = declarationPrinter.bundleFileInfo; + } + function collectLinkedAliases(node) { + if (ts.isExportAssignment(node)) { + if (node.expression.kind === 75 /* Identifier */) { + resolver.collectLinkedAliases(node.expression, /*setVisibility*/ true); + } + return; + } + else if (ts.isExportSpecifier(node)) { + resolver.collectLinkedAliases(node.propertyName || node.name, /*setVisibility*/ true); + return; + } + ts.forEachChild(node, collectLinkedAliases); + } + function printSourceFileOrBundle(jsFilePath, sourceMapFilePath, sourceFileOrBundle, printer, mapOptions) { + var bundle = sourceFileOrBundle.kind === 291 /* Bundle */ ? sourceFileOrBundle : undefined; + var sourceFile = sourceFileOrBundle.kind === 290 /* SourceFile */ ? sourceFileOrBundle : undefined; + var sourceFiles = bundle ? bundle.sourceFiles : [sourceFile]; + var sourceMapGenerator; + if (shouldEmitSourceMaps(mapOptions, sourceFileOrBundle)) { + sourceMapGenerator = ts.createSourceMapGenerator(host, ts.getBaseFileName(ts.normalizeSlashes(jsFilePath)), getSourceRoot(mapOptions), getSourceMapDirectory(mapOptions, jsFilePath, sourceFile), mapOptions); + } + if (bundle) { + printer.writeBundle(bundle, writer, sourceMapGenerator); + } + else { + printer.writeFile(sourceFile, writer, sourceMapGenerator); + } + if (sourceMapGenerator) { + if (sourceMapDataList) { + sourceMapDataList.push({ + inputSourceFileNames: sourceMapGenerator.getSources(), + sourceMap: sourceMapGenerator.toJSON() + }); + } + var sourceMappingURL = getSourceMappingURL(mapOptions, sourceMapGenerator, jsFilePath, sourceMapFilePath, sourceFile); + if (sourceMappingURL) { + if (!writer.isAtStartOfLine()) + writer.rawWrite(newLine); + writer.writeComment("//# " + "sourceMappingURL" + "=" + sourceMappingURL); // Tools can sometimes see this line as a source mapping url comment + } + // Write the source map + if (sourceMapFilePath) { + var sourceMap = sourceMapGenerator.toString(); + ts.writeFile(host, emitterDiagnostics, sourceMapFilePath, sourceMap, /*writeByteOrderMark*/ false, sourceFiles); + } + } + else { + writer.writeLine(); + } + // Write the output file + ts.writeFile(host, emitterDiagnostics, jsFilePath, writer.getText(), !!compilerOptions.emitBOM, sourceFiles); + // Reset state + writer.clear(); + } + function shouldEmitSourceMaps(mapOptions, sourceFileOrBundle) { + return (mapOptions.sourceMap || mapOptions.inlineSourceMap) + && (sourceFileOrBundle.kind !== 290 /* SourceFile */ || !ts.fileExtensionIs(sourceFileOrBundle.fileName, ".json" /* Json */)); + } + function getSourceRoot(mapOptions) { + // Normalize source root and make sure it has trailing "/" so that it can be used to combine paths with the + // relative paths of the sources list in the sourcemap + var sourceRoot = ts.normalizeSlashes(mapOptions.sourceRoot || ""); + return sourceRoot ? ts.ensureTrailingDirectorySeparator(sourceRoot) : sourceRoot; + } + function getSourceMapDirectory(mapOptions, filePath, sourceFile) { + if (mapOptions.sourceRoot) + return host.getCommonSourceDirectory(); + if (mapOptions.mapRoot) { + var sourceMapDir = ts.normalizeSlashes(mapOptions.mapRoot); + if (sourceFile) { + // For modules or multiple emit files the mapRoot will have directory structure like the sources + // So if src\a.ts and src\lib\b.ts are compiled together user would be moving the maps into mapRoot\a.js.map and mapRoot\lib\b.js.map + sourceMapDir = ts.getDirectoryPath(ts.getSourceFilePathInNewDir(sourceFile.fileName, host, sourceMapDir)); + } + if (ts.getRootLength(sourceMapDir) === 0) { + // The relative paths are relative to the common directory + sourceMapDir = ts.combinePaths(host.getCommonSourceDirectory(), sourceMapDir); + } + return sourceMapDir; + } + return ts.getDirectoryPath(ts.normalizePath(filePath)); + } + function getSourceMappingURL(mapOptions, sourceMapGenerator, filePath, sourceMapFilePath, sourceFile) { + if (mapOptions.inlineSourceMap) { + // Encode the sourceMap into the sourceMap url + var sourceMapText = sourceMapGenerator.toString(); + var base64SourceMapText = ts.base64encode(ts.sys, sourceMapText); + return "data:application/json;base64," + base64SourceMapText; + } + var sourceMapFile = ts.getBaseFileName(ts.normalizeSlashes(ts.Debug.checkDefined(sourceMapFilePath))); + if (mapOptions.mapRoot) { + var sourceMapDir = ts.normalizeSlashes(mapOptions.mapRoot); + if (sourceFile) { + // For modules or multiple emit files the mapRoot will have directory structure like the sources + // So if src\a.ts and src\lib\b.ts are compiled together user would be moving the maps into mapRoot\a.js.map and mapRoot\lib\b.js.map + sourceMapDir = ts.getDirectoryPath(ts.getSourceFilePathInNewDir(sourceFile.fileName, host, sourceMapDir)); + } + if (ts.getRootLength(sourceMapDir) === 0) { + // The relative paths are relative to the common directory + sourceMapDir = ts.combinePaths(host.getCommonSourceDirectory(), sourceMapDir); + return ts.getRelativePathToDirectoryOrUrl(ts.getDirectoryPath(ts.normalizePath(filePath)), // get the relative sourceMapDir path based on jsFilePath + ts.combinePaths(sourceMapDir, sourceMapFile), // this is where user expects to see sourceMap + host.getCurrentDirectory(), host.getCanonicalFileName, + /*isAbsolutePathAnUrl*/ true); + } + else { + return ts.combinePaths(sourceMapDir, sourceMapFile); + } + } + return sourceMapFile; + } + } + ts.emitFiles = emitFiles; + /*@internal*/ + function getBuildInfoText(buildInfo) { + return JSON.stringify(buildInfo, undefined, 2); + } + ts.getBuildInfoText = getBuildInfoText; + /*@internal*/ + function getBuildInfo(buildInfoText) { + return JSON.parse(buildInfoText); + } + ts.getBuildInfo = getBuildInfo; + /*@internal*/ + ts.notImplementedResolver = { + hasGlobalName: ts.notImplemented, + getReferencedExportContainer: ts.notImplemented, + getReferencedImportDeclaration: ts.notImplemented, + getReferencedDeclarationWithCollidingName: ts.notImplemented, + isDeclarationWithCollidingName: ts.notImplemented, + isValueAliasDeclaration: ts.notImplemented, + isReferencedAliasDeclaration: ts.notImplemented, + isTopLevelValueImportEqualsWithEntityName: ts.notImplemented, + getNodeCheckFlags: ts.notImplemented, + isDeclarationVisible: ts.notImplemented, + isLateBound: function (_node) { return false; }, + collectLinkedAliases: ts.notImplemented, + isImplementationOfOverload: ts.notImplemented, + isRequiredInitializedParameter: ts.notImplemented, + isOptionalUninitializedParameterProperty: ts.notImplemented, + isExpandoFunctionDeclaration: ts.notImplemented, + getPropertiesOfContainerFunction: ts.notImplemented, + createTypeOfDeclaration: ts.notImplemented, + createReturnTypeOfSignatureDeclaration: ts.notImplemented, + createTypeOfExpression: ts.notImplemented, + createLiteralConstValue: ts.notImplemented, + isSymbolAccessible: ts.notImplemented, + isEntityNameVisible: ts.notImplemented, + // Returns the constant value this property access resolves to: notImplemented, or 'undefined' for a non-constant + getConstantValue: ts.notImplemented, + getReferencedValueDeclaration: ts.notImplemented, + getTypeReferenceSerializationKind: ts.notImplemented, + isOptionalParameter: ts.notImplemented, + moduleExportsSomeValue: ts.notImplemented, + isArgumentsLocalBinding: ts.notImplemented, + getExternalModuleFileFromDeclaration: ts.notImplemented, + getTypeReferenceDirectivesForEntityName: ts.notImplemented, + getTypeReferenceDirectivesForSymbol: ts.notImplemented, + isLiteralConstDeclaration: ts.notImplemented, + getJsxFactoryEntity: ts.notImplemented, + getAllAccessorDeclarations: ts.notImplemented, + getSymbolOfExternalModuleSpecifier: ts.notImplemented, + isBindingCapturedByNode: ts.notImplemented, + getDeclarationStatementsForSourceFile: ts.notImplemented, + isImportRequiredByAugmentation: ts.notImplemented, + }; + function createSourceFilesFromBundleBuildInfo(bundle, buildInfoDirectory, host) { + var sourceFiles = bundle.sourceFiles.map(function (fileName) { + var sourceFile = ts.createNode(290 /* SourceFile */, 0, 0); + sourceFile.fileName = ts.getRelativePathFromDirectory(host.getCurrentDirectory(), ts.getNormalizedAbsolutePath(fileName, buildInfoDirectory), !host.useCaseSensitiveFileNames()); + sourceFile.text = ""; + sourceFile.statements = ts.createNodeArray(); + return sourceFile; + }); + var jsBundle = ts.Debug.checkDefined(bundle.js); + ts.forEach(jsBundle.sources && jsBundle.sources.prologues, function (prologueInfo) { + var sourceFile = sourceFiles[prologueInfo.file]; + sourceFile.text = prologueInfo.text; + sourceFile.end = prologueInfo.text.length; + sourceFile.statements = ts.createNodeArray(prologueInfo.directives.map(function (directive) { + var statement = ts.createNode(226 /* ExpressionStatement */, directive.pos, directive.end); + statement.expression = ts.createNode(10 /* StringLiteral */, directive.expression.pos, directive.expression.end); + statement.expression.text = directive.expression.text; + return statement; + })); + }); + return sourceFiles; + } + /*@internal*/ + function emitUsingBuildInfo(config, host, getCommandLine, customTransformers) { + var _a = getOutputPathsForBundle(config.options, /*forceDtsPaths*/ false), buildInfoPath = _a.buildInfoPath, jsFilePath = _a.jsFilePath, sourceMapFilePath = _a.sourceMapFilePath, declarationFilePath = _a.declarationFilePath, declarationMapPath = _a.declarationMapPath; + var buildInfoText = host.readFile(ts.Debug.checkDefined(buildInfoPath)); + if (!buildInfoText) + return buildInfoPath; + var jsFileText = host.readFile(ts.Debug.checkDefined(jsFilePath)); + if (!jsFileText) + return jsFilePath; + var sourceMapText = sourceMapFilePath && host.readFile(sourceMapFilePath); + // error if no source map or for now if inline sourcemap + if ((sourceMapFilePath && !sourceMapText) || config.options.inlineSourceMap) + return sourceMapFilePath || "inline sourcemap decoding"; + // read declaration text + var declarationText = declarationFilePath && host.readFile(declarationFilePath); + if (declarationFilePath && !declarationText) + return declarationFilePath; + var declarationMapText = declarationMapPath && host.readFile(declarationMapPath); + // error if no source map or for now if inline sourcemap + if ((declarationMapPath && !declarationMapText) || config.options.inlineSourceMap) + return declarationMapPath || "inline sourcemap decoding"; + var buildInfo = getBuildInfo(buildInfoText); + if (!buildInfo.bundle || !buildInfo.bundle.js || (declarationText && !buildInfo.bundle.dts)) + return buildInfoPath; + var buildInfoDirectory = ts.getDirectoryPath(ts.getNormalizedAbsolutePath(buildInfoPath, host.getCurrentDirectory())); + var ownPrependInput = ts.createInputFiles(jsFileText, declarationText, sourceMapFilePath, sourceMapText, declarationMapPath, declarationMapText, jsFilePath, declarationFilePath, buildInfoPath, buildInfo, + /*onlyOwnText*/ true); + var outputFiles = []; + var prependNodes = ts.createPrependNodes(config.projectReferences, getCommandLine, function (f) { return host.readFile(f); }); + var sourceFilesForJsEmit = createSourceFilesFromBundleBuildInfo(buildInfo.bundle, buildInfoDirectory, host); + var emitHost = { + getPrependNodes: ts.memoize(function () { return __spreadArrays(prependNodes, [ownPrependInput]); }), + getCanonicalFileName: host.getCanonicalFileName, + getCommonSourceDirectory: function () { return ts.getNormalizedAbsolutePath(buildInfo.bundle.commonSourceDirectory, buildInfoDirectory); }, + getCompilerOptions: function () { return config.options; }, + getCurrentDirectory: function () { return host.getCurrentDirectory(); }, + getNewLine: function () { return host.getNewLine(); }, + getSourceFile: ts.returnUndefined, + getSourceFileByPath: ts.returnUndefined, + getSourceFiles: function () { return sourceFilesForJsEmit; }, + getLibFileFromReference: ts.notImplemented, + isSourceFileFromExternalLibrary: ts.returnFalse, + getResolvedProjectReferenceToRedirect: ts.returnUndefined, + getProjectReferenceRedirect: ts.returnUndefined, + isSourceOfProjectReferenceRedirect: ts.returnFalse, + writeFile: function (name, text, writeByteOrderMark) { + switch (name) { + case jsFilePath: + if (jsFileText === text) + return; + break; + case sourceMapFilePath: + if (sourceMapText === text) + return; + break; + case buildInfoPath: + var newBuildInfo = getBuildInfo(text); + newBuildInfo.program = buildInfo.program; + // Update sourceFileInfo + var _a = buildInfo.bundle, js = _a.js, dts = _a.dts, sourceFiles = _a.sourceFiles; + newBuildInfo.bundle.js.sources = js.sources; + if (dts) { + newBuildInfo.bundle.dts.sources = dts.sources; + } + newBuildInfo.bundle.sourceFiles = sourceFiles; + outputFiles.push({ name: name, text: getBuildInfoText(newBuildInfo), writeByteOrderMark: writeByteOrderMark }); + return; + case declarationFilePath: + if (declarationText === text) + return; + break; + case declarationMapPath: + if (declarationMapText === text) + return; + break; + default: + ts.Debug.fail("Unexpected path: " + name); + } + outputFiles.push({ name: name, text: text, writeByteOrderMark: writeByteOrderMark }); + }, + isEmitBlocked: ts.returnFalse, + readFile: function (f) { return host.readFile(f); }, + fileExists: function (f) { return host.fileExists(f); }, + useCaseSensitiveFileNames: function () { return host.useCaseSensitiveFileNames(); }, + getProgramBuildInfo: ts.returnUndefined, + getSourceFileFromReference: ts.returnUndefined, + redirectTargetsMap: ts.createMultiMap() + }; + emitFiles(ts.notImplementedResolver, emitHost, + /*targetSourceFile*/ undefined, ts.getTransformers(config.options, customTransformers)); + return outputFiles; + } + ts.emitUsingBuildInfo = emitUsingBuildInfo; + var PipelinePhase; + (function (PipelinePhase) { + PipelinePhase[PipelinePhase["Notification"] = 0] = "Notification"; + PipelinePhase[PipelinePhase["Substitution"] = 1] = "Substitution"; + PipelinePhase[PipelinePhase["Comments"] = 2] = "Comments"; + PipelinePhase[PipelinePhase["SourceMaps"] = 3] = "SourceMaps"; + PipelinePhase[PipelinePhase["Emit"] = 4] = "Emit"; + })(PipelinePhase || (PipelinePhase = {})); + function createPrinter(printerOptions, handlers) { + if (printerOptions === void 0) { printerOptions = {}; } + if (handlers === void 0) { handlers = {}; } + var hasGlobalName = handlers.hasGlobalName, _a = handlers.onEmitNode, onEmitNode = _a === void 0 ? ts.noEmitNotification : _a, isEmitNotificationEnabled = handlers.isEmitNotificationEnabled, _b = handlers.substituteNode, substituteNode = _b === void 0 ? ts.noEmitSubstitution : _b, onBeforeEmitNodeArray = handlers.onBeforeEmitNodeArray, onAfterEmitNodeArray = handlers.onAfterEmitNodeArray, onBeforeEmitToken = handlers.onBeforeEmitToken, onAfterEmitToken = handlers.onAfterEmitToken; + var extendedDiagnostics = !!printerOptions.extendedDiagnostics; + var newLine = ts.getNewLineCharacter(printerOptions); + var moduleKind = ts.getEmitModuleKind(printerOptions); + var bundledHelpers = ts.createMap(); + var currentSourceFile; + var nodeIdToGeneratedName; // Map of generated names for specific nodes. + var autoGeneratedIdToGeneratedName; // Map of generated names for temp and loop variables. + var generatedNames; // Set of names generated by the NameGenerator. + var tempFlagsStack; // Stack of enclosing name generation scopes. + var tempFlags; // TempFlags for the current name generation scope. + var reservedNamesStack; // Stack of TempFlags reserved in enclosing name generation scopes. + var reservedNames; // TempFlags to reserve in nested name generation scopes. + var preserveSourceNewlines = printerOptions.preserveSourceNewlines; // Can be overridden inside nodes with the `IgnoreSourceNewlines` emit flag. + var writer; + var ownWriter; // Reusable `EmitTextWriter` for basic printing. + var write = writeBase; + var isOwnFileEmit; + var bundleFileInfo = printerOptions.writeBundleFileInfo ? { sections: [] } : undefined; + var relativeToBuildInfo = bundleFileInfo ? ts.Debug.checkDefined(printerOptions.relativeToBuildInfo) : undefined; + var recordInternalSection = printerOptions.recordInternalSection; + var sourceFileTextPos = 0; + var sourceFileTextKind = "text" /* Text */; + // Source Maps + var sourceMapsDisabled = true; + var sourceMapGenerator; + var sourceMapSource; + var sourceMapSourceIndex = -1; + // Comments + var containerPos = -1; + var containerEnd = -1; + var declarationListContainerEnd = -1; + var currentLineMap; + var detachedCommentsInfo; + var hasWrittenComment = false; + var commentsDisabled = !!printerOptions.removeComments; + var lastNode; + var lastSubstitution; + var _c = ts.performance.createTimerIf(extendedDiagnostics, "commentTime", "beforeComment", "afterComment"), enterComment = _c.enter, exitComment = _c.exit; + reset(); + return { + // public API + printNode: printNode, + printList: printList, + printFile: printFile, + printBundle: printBundle, + // internal API + writeNode: writeNode, + writeList: writeList, + writeFile: writeFile, + writeBundle: writeBundle, + bundleFileInfo: bundleFileInfo + }; + function printNode(hint, node, sourceFile) { + switch (hint) { + case 0 /* SourceFile */: + ts.Debug.assert(ts.isSourceFile(node), "Expected a SourceFile node."); + break; + case 2 /* IdentifierName */: + ts.Debug.assert(ts.isIdentifier(node), "Expected an Identifier node."); + break; + case 1 /* Expression */: + ts.Debug.assert(ts.isExpression(node), "Expected an Expression node."); + break; + } + switch (node.kind) { + case 290 /* SourceFile */: return printFile(node); + case 291 /* Bundle */: return printBundle(node); + case 292 /* UnparsedSource */: return printUnparsedSource(node); + } + writeNode(hint, node, sourceFile, beginPrint()); + return endPrint(); + } + function printList(format, nodes, sourceFile) { + writeList(format, nodes, sourceFile, beginPrint()); + return endPrint(); + } + function printBundle(bundle) { + writeBundle(bundle, beginPrint(), /*sourceMapEmitter*/ undefined); + return endPrint(); + } + function printFile(sourceFile) { + writeFile(sourceFile, beginPrint(), /*sourceMapEmitter*/ undefined); + return endPrint(); + } + function printUnparsedSource(unparsed) { + writeUnparsedSource(unparsed, beginPrint()); + return endPrint(); + } + function writeNode(hint, node, sourceFile, output) { + var previousWriter = writer; + setWriter(output, /*_sourceMapGenerator*/ undefined); + print(hint, node, sourceFile); + reset(); + writer = previousWriter; + } + function writeList(format, nodes, sourceFile, output) { + var previousWriter = writer; + setWriter(output, /*_sourceMapGenerator*/ undefined); + if (sourceFile) { + setSourceFile(sourceFile); + } + emitList(syntheticParent, nodes, format); + reset(); + writer = previousWriter; + } + function getTextPosWithWriteLine() { + return writer.getTextPosWithWriteLine ? writer.getTextPosWithWriteLine() : writer.getTextPos(); + } + function updateOrPushBundleFileTextLike(pos, end, kind) { + var last = ts.lastOrUndefined(bundleFileInfo.sections); + if (last && last.kind === kind) { + last.end = end; + } + else { + bundleFileInfo.sections.push({ pos: pos, end: end, kind: kind }); + } + } + function recordBundleFileInternalSectionStart(node) { + if (recordInternalSection && + bundleFileInfo && + currentSourceFile && + (ts.isDeclaration(node) || ts.isVariableStatement(node)) && + ts.isInternalDeclaration(node, currentSourceFile) && + sourceFileTextKind !== "internal" /* Internal */) { + var prevSourceFileTextKind = sourceFileTextKind; + recordBundleFileTextLikeSection(writer.getTextPos()); + sourceFileTextPos = getTextPosWithWriteLine(); + sourceFileTextKind = "internal" /* Internal */; + return prevSourceFileTextKind; + } + return undefined; + } + function recordBundleFileInternalSectionEnd(prevSourceFileTextKind) { + if (prevSourceFileTextKind) { + recordBundleFileTextLikeSection(writer.getTextPos()); + sourceFileTextPos = getTextPosWithWriteLine(); + sourceFileTextKind = prevSourceFileTextKind; + } + } + function recordBundleFileTextLikeSection(end) { + if (sourceFileTextPos < end) { + updateOrPushBundleFileTextLike(sourceFileTextPos, end, sourceFileTextKind); + return true; + } + return false; + } + function writeBundle(bundle, output, sourceMapGenerator) { + var _a; + isOwnFileEmit = false; + var previousWriter = writer; + setWriter(output, sourceMapGenerator); + emitShebangIfNeeded(bundle); + emitPrologueDirectivesIfNeeded(bundle); + emitHelpers(bundle); + emitSyntheticTripleSlashReferencesIfNeeded(bundle); + for (var _b = 0, _c = bundle.prepends; _b < _c.length; _b++) { + var prepend = _c[_b]; + writeLine(); + var pos = writer.getTextPos(); + var savedSections = bundleFileInfo && bundleFileInfo.sections; + if (savedSections) + bundleFileInfo.sections = []; + print(4 /* Unspecified */, prepend, /*sourceFile*/ undefined); + if (bundleFileInfo) { + var newSections = bundleFileInfo.sections; + bundleFileInfo.sections = savedSections; + if (prepend.oldFileOfCurrentEmit) + (_a = bundleFileInfo.sections).push.apply(_a, newSections); + else { + newSections.forEach(function (section) { return ts.Debug.assert(ts.isBundleFileTextLike(section)); }); + bundleFileInfo.sections.push({ + pos: pos, + end: writer.getTextPos(), + kind: "prepend" /* Prepend */, + data: relativeToBuildInfo(prepend.fileName), + texts: newSections + }); + } + } + } + sourceFileTextPos = getTextPosWithWriteLine(); + for (var _d = 0, _e = bundle.sourceFiles; _d < _e.length; _d++) { + var sourceFile = _e[_d]; + print(0 /* SourceFile */, sourceFile, sourceFile); + } + if (bundleFileInfo && bundle.sourceFiles.length) { + var end = writer.getTextPos(); + if (recordBundleFileTextLikeSection(end)) { + // Store prologues + var prologues = getPrologueDirectivesFromBundledSourceFiles(bundle); + if (prologues) { + if (!bundleFileInfo.sources) + bundleFileInfo.sources = {}; + bundleFileInfo.sources.prologues = prologues; + } + // Store helpes + var helpers = getHelpersFromBundledSourceFiles(bundle); + if (helpers) { + if (!bundleFileInfo.sources) + bundleFileInfo.sources = {}; + bundleFileInfo.sources.helpers = helpers; + } + } + } + reset(); + writer = previousWriter; + } + function writeUnparsedSource(unparsed, output) { + var previousWriter = writer; + setWriter(output, /*_sourceMapGenerator*/ undefined); + print(4 /* Unspecified */, unparsed, /*sourceFile*/ undefined); + reset(); + writer = previousWriter; + } + function writeFile(sourceFile, output, sourceMapGenerator) { + isOwnFileEmit = true; + var previousWriter = writer; + setWriter(output, sourceMapGenerator); + emitShebangIfNeeded(sourceFile); + emitPrologueDirectivesIfNeeded(sourceFile); + print(0 /* SourceFile */, sourceFile, sourceFile); + reset(); + writer = previousWriter; + } + function beginPrint() { + return ownWriter || (ownWriter = ts.createTextWriter(newLine)); + } + function endPrint() { + var text = ownWriter.getText(); + ownWriter.clear(); + return text; + } + function print(hint, node, sourceFile) { + if (sourceFile) { + setSourceFile(sourceFile); + } + pipelineEmit(hint, node); + } + function setSourceFile(sourceFile) { + currentSourceFile = sourceFile; + currentLineMap = undefined; + detachedCommentsInfo = undefined; + if (sourceFile) { + setSourceMapSource(sourceFile); + } + } + function setWriter(_writer, _sourceMapGenerator) { + if (_writer && printerOptions.omitTrailingSemicolon) { + _writer = ts.getTrailingSemicolonDeferringWriter(_writer); + } + writer = _writer; // TODO: GH#18217 + sourceMapGenerator = _sourceMapGenerator; + sourceMapsDisabled = !writer || !sourceMapGenerator; + } + function reset() { + nodeIdToGeneratedName = []; + autoGeneratedIdToGeneratedName = []; + generatedNames = ts.createMap(); + tempFlagsStack = []; + tempFlags = 0 /* Auto */; + reservedNamesStack = []; + currentSourceFile = undefined; + currentLineMap = undefined; + detachedCommentsInfo = undefined; + lastNode = undefined; + lastSubstitution = undefined; + setWriter(/*output*/ undefined, /*_sourceMapGenerator*/ undefined); + } + function getCurrentLineMap() { + return currentLineMap || (currentLineMap = ts.getLineStarts(currentSourceFile)); + } + function emit(node) { + if (node === undefined) + return; + var prevSourceFileTextKind = recordBundleFileInternalSectionStart(node); + var substitute = pipelineEmit(4 /* Unspecified */, node); + recordBundleFileInternalSectionEnd(prevSourceFileTextKind); + return substitute; + } + function emitIdentifierName(node) { + if (node === undefined) + return; + return pipelineEmit(2 /* IdentifierName */, node); + } + function emitExpression(node) { + if (node === undefined) + return; + return pipelineEmit(1 /* Expression */, node); + } + function emitJsxAttributeValue(node) { + return pipelineEmit(ts.isStringLiteral(node) ? 6 /* JsxAttributeValue */ : 4 /* Unspecified */, node); + } + function pipelineEmit(emitHint, node) { + var savedLastNode = lastNode; + var savedLastSubstitution = lastSubstitution; + var savedPreserveSourceNewlines = preserveSourceNewlines; + lastNode = node; + lastSubstitution = undefined; + if (preserveSourceNewlines && !!(ts.getEmitFlags(node) & 134217728 /* IgnoreSourceNewlines */)) { + preserveSourceNewlines = false; + } + var pipelinePhase = getPipelinePhase(0 /* Notification */, emitHint, node); + pipelinePhase(emitHint, node); + ts.Debug.assert(lastNode === node); + var substitute = lastSubstitution; + lastNode = savedLastNode; + lastSubstitution = savedLastSubstitution; + preserveSourceNewlines = savedPreserveSourceNewlines; + return substitute || node; + } + function getPipelinePhase(phase, emitHint, node) { + switch (phase) { + case 0 /* Notification */: + if (onEmitNode !== ts.noEmitNotification && (!isEmitNotificationEnabled || isEmitNotificationEnabled(node))) { + return pipelineEmitWithNotification; + } + // falls through + case 1 /* Substitution */: + if (substituteNode !== ts.noEmitSubstitution && (lastSubstitution = substituteNode(emitHint, node)) !== node) { + return pipelineEmitWithSubstitution; + } + // falls through + case 2 /* Comments */: + if (!commentsDisabled && node.kind !== 290 /* SourceFile */) { + return pipelineEmitWithComments; + } + // falls through + case 3 /* SourceMaps */: + if (!sourceMapsDisabled && node.kind !== 290 /* SourceFile */ && !ts.isInJsonFile(node)) { + return pipelineEmitWithSourceMap; + } + // falls through + case 4 /* Emit */: + return pipelineEmitWithHint; + default: + return ts.Debug.assertNever(phase); + } + } + function getNextPipelinePhase(currentPhase, emitHint, node) { + return getPipelinePhase(currentPhase + 1, emitHint, node); + } + function pipelineEmitWithNotification(hint, node) { + ts.Debug.assert(lastNode === node); + var pipelinePhase = getNextPipelinePhase(0 /* Notification */, hint, node); + onEmitNode(hint, node, pipelinePhase); + ts.Debug.assert(lastNode === node); + } + function pipelineEmitWithHint(hint, node) { + ts.Debug.assert(lastNode === node || lastSubstitution === node); + if (hint === 0 /* SourceFile */) + return emitSourceFile(ts.cast(node, ts.isSourceFile)); + if (hint === 2 /* IdentifierName */) + return emitIdentifier(ts.cast(node, ts.isIdentifier)); + if (hint === 6 /* JsxAttributeValue */) + return emitLiteral(ts.cast(node, ts.isStringLiteral), /*jsxAttributeEscape*/ true); + if (hint === 3 /* MappedTypeParameter */) + return emitMappedTypeParameter(ts.cast(node, ts.isTypeParameterDeclaration)); + if (hint === 5 /* EmbeddedStatement */) { + ts.Debug.assertNode(node, ts.isEmptyStatement); + return emitEmptyStatement(/*isEmbeddedStatement*/ true); + } + if (hint === 4 /* Unspecified */) { + if (ts.isKeyword(node.kind)) + return writeTokenNode(node, writeKeyword); + switch (node.kind) { + // Pseudo-literals + case 15 /* TemplateHead */: + case 16 /* TemplateMiddle */: + case 17 /* TemplateTail */: + return emitLiteral(node, /*jsxAttributeEscape*/ false); + case 292 /* UnparsedSource */: + case 286 /* UnparsedPrepend */: + return emitUnparsedSourceOrPrepend(node); + case 285 /* UnparsedPrologue */: + return writeUnparsedNode(node); + case 287 /* UnparsedText */: + case 288 /* UnparsedInternalText */: + return emitUnparsedTextLike(node); + case 289 /* UnparsedSyntheticReference */: + return emitUnparsedSyntheticReference(node); + // Identifiers + case 75 /* Identifier */: + return emitIdentifier(node); + // PrivateIdentifiers + case 76 /* PrivateIdentifier */: + return emitPrivateIdentifier(node); + // Parse tree nodes + // Names + case 153 /* QualifiedName */: + return emitQualifiedName(node); + case 154 /* ComputedPropertyName */: + return emitComputedPropertyName(node); + // Signature elements + case 155 /* TypeParameter */: + return emitTypeParameter(node); + case 156 /* Parameter */: + return emitParameter(node); + case 157 /* Decorator */: + return emitDecorator(node); + // Type members + case 158 /* PropertySignature */: + return emitPropertySignature(node); + case 159 /* PropertyDeclaration */: + return emitPropertyDeclaration(node); + case 160 /* MethodSignature */: + return emitMethodSignature(node); + case 161 /* MethodDeclaration */: + return emitMethodDeclaration(node); + case 162 /* Constructor */: + return emitConstructor(node); + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + return emitAccessorDeclaration(node); + case 165 /* CallSignature */: + return emitCallSignature(node); + case 166 /* ConstructSignature */: + return emitConstructSignature(node); + case 167 /* IndexSignature */: + return emitIndexSignature(node); + // Types + case 168 /* TypePredicate */: + return emitTypePredicate(node); + case 169 /* TypeReference */: + return emitTypeReference(node); + case 170 /* FunctionType */: + return emitFunctionType(node); + case 300 /* JSDocFunctionType */: + return emitJSDocFunctionType(node); + case 171 /* ConstructorType */: + return emitConstructorType(node); + case 172 /* TypeQuery */: + return emitTypeQuery(node); + case 173 /* TypeLiteral */: + return emitTypeLiteral(node); + case 174 /* ArrayType */: + return emitArrayType(node); + case 175 /* TupleType */: + return emitTupleType(node); + case 176 /* OptionalType */: + return emitOptionalType(node); + case 178 /* UnionType */: + return emitUnionType(node); + case 179 /* IntersectionType */: + return emitIntersectionType(node); + case 180 /* ConditionalType */: + return emitConditionalType(node); + case 181 /* InferType */: + return emitInferType(node); + case 182 /* ParenthesizedType */: + return emitParenthesizedType(node); + case 216 /* ExpressionWithTypeArguments */: + return emitExpressionWithTypeArguments(node); + case 183 /* ThisType */: + return emitThisType(); + case 184 /* TypeOperator */: + return emitTypeOperator(node); + case 185 /* IndexedAccessType */: + return emitIndexedAccessType(node); + case 186 /* MappedType */: + return emitMappedType(node); + case 187 /* LiteralType */: + return emitLiteralType(node); + case 188 /* ImportType */: + return emitImportTypeNode(node); + case 295 /* JSDocAllType */: + writePunctuation("*"); + return; + case 296 /* JSDocUnknownType */: + writePunctuation("?"); + return; + case 297 /* JSDocNullableType */: + return emitJSDocNullableType(node); + case 298 /* JSDocNonNullableType */: + return emitJSDocNonNullableType(node); + case 299 /* JSDocOptionalType */: + return emitJSDocOptionalType(node); + case 177 /* RestType */: + case 301 /* JSDocVariadicType */: + return emitRestOrJSDocVariadicType(node); + // Binding patterns + case 189 /* ObjectBindingPattern */: + return emitObjectBindingPattern(node); + case 190 /* ArrayBindingPattern */: + return emitArrayBindingPattern(node); + case 191 /* BindingElement */: + return emitBindingElement(node); + // Misc + case 221 /* TemplateSpan */: + return emitTemplateSpan(node); + case 222 /* SemicolonClassElement */: + return emitSemicolonClassElement(); + // Statements + case 223 /* Block */: + return emitBlock(node); + case 225 /* VariableStatement */: + return emitVariableStatement(node); + case 224 /* EmptyStatement */: + return emitEmptyStatement(/*isEmbeddedStatement*/ false); + case 226 /* ExpressionStatement */: + return emitExpressionStatement(node); + case 227 /* IfStatement */: + return emitIfStatement(node); + case 228 /* DoStatement */: + return emitDoStatement(node); + case 229 /* WhileStatement */: + return emitWhileStatement(node); + case 230 /* ForStatement */: + return emitForStatement(node); + case 231 /* ForInStatement */: + return emitForInStatement(node); + case 232 /* ForOfStatement */: + return emitForOfStatement(node); + case 233 /* ContinueStatement */: + return emitContinueStatement(node); + case 234 /* BreakStatement */: + return emitBreakStatement(node); + case 235 /* ReturnStatement */: + return emitReturnStatement(node); + case 236 /* WithStatement */: + return emitWithStatement(node); + case 237 /* SwitchStatement */: + return emitSwitchStatement(node); + case 238 /* LabeledStatement */: + return emitLabeledStatement(node); + case 239 /* ThrowStatement */: + return emitThrowStatement(node); + case 240 /* TryStatement */: + return emitTryStatement(node); + case 241 /* DebuggerStatement */: + return emitDebuggerStatement(node); + // Declarations + case 242 /* VariableDeclaration */: + return emitVariableDeclaration(node); + case 243 /* VariableDeclarationList */: + return emitVariableDeclarationList(node); + case 244 /* FunctionDeclaration */: + return emitFunctionDeclaration(node); + case 245 /* ClassDeclaration */: + return emitClassDeclaration(node); + case 246 /* InterfaceDeclaration */: + return emitInterfaceDeclaration(node); + case 247 /* TypeAliasDeclaration */: + return emitTypeAliasDeclaration(node); + case 248 /* EnumDeclaration */: + return emitEnumDeclaration(node); + case 249 /* ModuleDeclaration */: + return emitModuleDeclaration(node); + case 250 /* ModuleBlock */: + return emitModuleBlock(node); + case 251 /* CaseBlock */: + return emitCaseBlock(node); + case 252 /* NamespaceExportDeclaration */: + return emitNamespaceExportDeclaration(node); + case 253 /* ImportEqualsDeclaration */: + return emitImportEqualsDeclaration(node); + case 254 /* ImportDeclaration */: + return emitImportDeclaration(node); + case 255 /* ImportClause */: + return emitImportClause(node); + case 256 /* NamespaceImport */: + return emitNamespaceImport(node); + case 262 /* NamespaceExport */: + return emitNamespaceExport(node); + case 257 /* NamedImports */: + return emitNamedImports(node); + case 258 /* ImportSpecifier */: + return emitImportSpecifier(node); + case 259 /* ExportAssignment */: + return emitExportAssignment(node); + case 260 /* ExportDeclaration */: + return emitExportDeclaration(node); + case 261 /* NamedExports */: + return emitNamedExports(node); + case 263 /* ExportSpecifier */: + return emitExportSpecifier(node); + case 264 /* MissingDeclaration */: + return; + // Module references + case 265 /* ExternalModuleReference */: + return emitExternalModuleReference(node); + // JSX (non-expression) + case 11 /* JsxText */: + return emitJsxText(node); + case 268 /* JsxOpeningElement */: + case 271 /* JsxOpeningFragment */: + return emitJsxOpeningElementOrFragment(node); + case 269 /* JsxClosingElement */: + case 272 /* JsxClosingFragment */: + return emitJsxClosingElementOrFragment(node); + case 273 /* JsxAttribute */: + return emitJsxAttribute(node); + case 274 /* JsxAttributes */: + return emitJsxAttributes(node); + case 275 /* JsxSpreadAttribute */: + return emitJsxSpreadAttribute(node); + case 276 /* JsxExpression */: + return emitJsxExpression(node); + // Clauses + case 277 /* CaseClause */: + return emitCaseClause(node); + case 278 /* DefaultClause */: + return emitDefaultClause(node); + case 279 /* HeritageClause */: + return emitHeritageClause(node); + case 280 /* CatchClause */: + return emitCatchClause(node); + // Property assignments + case 281 /* PropertyAssignment */: + return emitPropertyAssignment(node); + case 282 /* ShorthandPropertyAssignment */: + return emitShorthandPropertyAssignment(node); + case 283 /* SpreadAssignment */: + return emitSpreadAssignment(node); + // Enum + case 284 /* EnumMember */: + return emitEnumMember(node); + // JSDoc nodes (only used in codefixes currently) + case 317 /* JSDocParameterTag */: + case 323 /* JSDocPropertyTag */: + return emitJSDocPropertyLikeTag(node); + case 318 /* JSDocReturnTag */: + case 320 /* JSDocTypeTag */: + case 319 /* JSDocThisTag */: + case 316 /* JSDocEnumTag */: + return emitJSDocSimpleTypedTag(node); + case 308 /* JSDocImplementsTag */: + case 307 /* JSDocAugmentsTag */: + return emitJSDocHeritageTag(node); + case 321 /* JSDocTemplateTag */: + return emitJSDocTemplateTag(node); + case 322 /* JSDocTypedefTag */: + return emitJSDocTypedefTag(node); + case 315 /* JSDocCallbackTag */: + return emitJSDocCallbackTag(node); + case 305 /* JSDocSignature */: + return emitJSDocSignature(node); + case 304 /* JSDocTypeLiteral */: + return emitJSDocTypeLiteral(node); + case 310 /* JSDocClassTag */: + case 306 /* JSDocTag */: + return emitJSDocSimpleTag(node); + case 303 /* JSDocComment */: + return emitJSDoc(node); + // Transformation nodes (ignored) + } + if (ts.isExpression(node)) { + hint = 1 /* Expression */; + if (substituteNode !== ts.noEmitSubstitution) { + lastSubstitution = node = substituteNode(hint, node); + } + } + else if (ts.isToken(node)) { + return writeTokenNode(node, writePunctuation); + } + } + if (hint === 1 /* Expression */) { + switch (node.kind) { + // Literals + case 8 /* NumericLiteral */: + case 9 /* BigIntLiteral */: + return emitNumericOrBigIntLiteral(node); + case 10 /* StringLiteral */: + case 13 /* RegularExpressionLiteral */: + case 14 /* NoSubstitutionTemplateLiteral */: + return emitLiteral(node, /*jsxAttributeEscape*/ false); + // Identifiers + case 75 /* Identifier */: + return emitIdentifier(node); + // Reserved words + case 91 /* FalseKeyword */: + case 100 /* NullKeyword */: + case 102 /* SuperKeyword */: + case 106 /* TrueKeyword */: + case 104 /* ThisKeyword */: + case 96 /* ImportKeyword */: + writeTokenNode(node, writeKeyword); + return; + // Expressions + case 192 /* ArrayLiteralExpression */: + return emitArrayLiteralExpression(node); + case 193 /* ObjectLiteralExpression */: + return emitObjectLiteralExpression(node); + case 194 /* PropertyAccessExpression */: + return emitPropertyAccessExpression(node); + case 195 /* ElementAccessExpression */: + return emitElementAccessExpression(node); + case 196 /* CallExpression */: + return emitCallExpression(node); + case 197 /* NewExpression */: + return emitNewExpression(node); + case 198 /* TaggedTemplateExpression */: + return emitTaggedTemplateExpression(node); + case 199 /* TypeAssertionExpression */: + return emitTypeAssertionExpression(node); + case 200 /* ParenthesizedExpression */: + return emitParenthesizedExpression(node); + case 201 /* FunctionExpression */: + return emitFunctionExpression(node); + case 202 /* ArrowFunction */: + return emitArrowFunction(node); + case 203 /* DeleteExpression */: + return emitDeleteExpression(node); + case 204 /* TypeOfExpression */: + return emitTypeOfExpression(node); + case 205 /* VoidExpression */: + return emitVoidExpression(node); + case 206 /* AwaitExpression */: + return emitAwaitExpression(node); + case 207 /* PrefixUnaryExpression */: + return emitPrefixUnaryExpression(node); + case 208 /* PostfixUnaryExpression */: + return emitPostfixUnaryExpression(node); + case 209 /* BinaryExpression */: + return emitBinaryExpression(node); + case 210 /* ConditionalExpression */: + return emitConditionalExpression(node); + case 211 /* TemplateExpression */: + return emitTemplateExpression(node); + case 212 /* YieldExpression */: + return emitYieldExpression(node); + case 213 /* SpreadElement */: + return emitSpreadExpression(node); + case 214 /* ClassExpression */: + return emitClassExpression(node); + case 215 /* OmittedExpression */: + return; + case 217 /* AsExpression */: + return emitAsExpression(node); + case 218 /* NonNullExpression */: + return emitNonNullExpression(node); + case 219 /* MetaProperty */: + return emitMetaProperty(node); + // JSX + case 266 /* JsxElement */: + return emitJsxElement(node); + case 267 /* JsxSelfClosingElement */: + return emitJsxSelfClosingElement(node); + case 270 /* JsxFragment */: + return emitJsxFragment(node); + // Transformation nodes + case 326 /* PartiallyEmittedExpression */: + return emitPartiallyEmittedExpression(node); + case 327 /* CommaListExpression */: + return emitCommaList(node); + } + } + } + function emitMappedTypeParameter(node) { + emit(node.name); + writeSpace(); + writeKeyword("in"); + writeSpace(); + emit(node.constraint); + } + function pipelineEmitWithSubstitution(hint, node) { + ts.Debug.assert(lastNode === node || lastSubstitution === node); + var pipelinePhase = getNextPipelinePhase(1 /* Substitution */, hint, node); + pipelinePhase(hint, lastSubstitution); + ts.Debug.assert(lastNode === node || lastSubstitution === node); + } + function getHelpersFromBundledSourceFiles(bundle) { + var result; + if (moduleKind === ts.ModuleKind.None || printerOptions.noEmitHelpers) { + return undefined; + } + var bundledHelpers = ts.createMap(); + for (var _a = 0, _b = bundle.sourceFiles; _a < _b.length; _a++) { + var sourceFile = _b[_a]; + var shouldSkip = ts.getExternalHelpersModuleName(sourceFile) !== undefined; + var helpers = getSortedEmitHelpers(sourceFile); + if (!helpers) + continue; + for (var _c = 0, helpers_4 = helpers; _c < helpers_4.length; _c++) { + var helper = helpers_4[_c]; + if (!helper.scoped && !shouldSkip && !bundledHelpers.get(helper.name)) { + bundledHelpers.set(helper.name, true); + (result || (result = [])).push(helper.name); + } + } + } + return result; + } + function emitHelpers(node) { + var helpersEmitted = false; + var bundle = node.kind === 291 /* Bundle */ ? node : undefined; + if (bundle && moduleKind === ts.ModuleKind.None) { + return; + } + var numPrepends = bundle ? bundle.prepends.length : 0; + var numNodes = bundle ? bundle.sourceFiles.length + numPrepends : 1; + for (var i = 0; i < numNodes; i++) { + var currentNode = bundle ? i < numPrepends ? bundle.prepends[i] : bundle.sourceFiles[i - numPrepends] : node; + var sourceFile = ts.isSourceFile(currentNode) ? currentNode : ts.isUnparsedSource(currentNode) ? undefined : currentSourceFile; + var shouldSkip = printerOptions.noEmitHelpers || (!!sourceFile && ts.hasRecordedExternalHelpers(sourceFile)); + var shouldBundle = (ts.isSourceFile(currentNode) || ts.isUnparsedSource(currentNode)) && !isOwnFileEmit; + var helpers = ts.isUnparsedSource(currentNode) ? currentNode.helpers : getSortedEmitHelpers(currentNode); + if (helpers) { + for (var _a = 0, helpers_5 = helpers; _a < helpers_5.length; _a++) { + var helper = helpers_5[_a]; + if (!helper.scoped) { + // Skip the helper if it can be skipped and the noEmitHelpers compiler + // option is set, or if it can be imported and the importHelpers compiler + // option is set. + if (shouldSkip) + continue; + // Skip the helper if it can be bundled but hasn't already been emitted and we + // are emitting a bundled module. + if (shouldBundle) { + if (bundledHelpers.get(helper.name)) { + continue; + } + bundledHelpers.set(helper.name, true); + } + } + else if (bundle) { + // Skip the helper if it is scoped and we are emitting bundled helpers + continue; + } + var pos = getTextPosWithWriteLine(); + if (typeof helper.text === "string") { + writeLines(helper.text); + } + else { + writeLines(helper.text(makeFileLevelOptimisticUniqueName)); + } + if (bundleFileInfo) + bundleFileInfo.sections.push({ pos: pos, end: writer.getTextPos(), kind: "emitHelpers" /* EmitHelpers */, data: helper.name }); + helpersEmitted = true; + } + } + } + return helpersEmitted; + } + function getSortedEmitHelpers(node) { + var helpers = ts.getEmitHelpers(node); + return helpers && ts.stableSort(helpers, ts.compareEmitHelpers); + } + // + // Literals/Pseudo-literals + // + // SyntaxKind.NumericLiteral + // SyntaxKind.BigIntLiteral + function emitNumericOrBigIntLiteral(node) { + emitLiteral(node, /*jsxAttributeEscape*/ false); + } + // SyntaxKind.StringLiteral + // SyntaxKind.RegularExpressionLiteral + // SyntaxKind.NoSubstitutionTemplateLiteral + // SyntaxKind.TemplateHead + // SyntaxKind.TemplateMiddle + // SyntaxKind.TemplateTail + function emitLiteral(node, jsxAttributeEscape) { + var text = getLiteralTextOfNode(node, printerOptions.neverAsciiEscape, jsxAttributeEscape); + if ((printerOptions.sourceMap || printerOptions.inlineSourceMap) + && (node.kind === 10 /* StringLiteral */ || ts.isTemplateLiteralKind(node.kind))) { + writeLiteral(text); + } + else { + // Quick info expects all literals to be called with writeStringLiteral, as there's no specific type for numberLiterals + writeStringLiteral(text); + } + } + // SyntaxKind.UnparsedSource + // SyntaxKind.UnparsedPrepend + function emitUnparsedSourceOrPrepend(unparsed) { + for (var _a = 0, _b = unparsed.texts; _a < _b.length; _a++) { + var text = _b[_a]; + writeLine(); + emit(text); + } + } + // SyntaxKind.UnparsedPrologue + // SyntaxKind.UnparsedText + // SyntaxKind.UnparsedInternal + // SyntaxKind.UnparsedSyntheticReference + function writeUnparsedNode(unparsed) { + writer.rawWrite(unparsed.parent.text.substring(unparsed.pos, unparsed.end)); + } + // SyntaxKind.UnparsedText + // SyntaxKind.UnparsedInternal + function emitUnparsedTextLike(unparsed) { + var pos = getTextPosWithWriteLine(); + writeUnparsedNode(unparsed); + if (bundleFileInfo) { + updateOrPushBundleFileTextLike(pos, writer.getTextPos(), unparsed.kind === 287 /* UnparsedText */ ? + "text" /* Text */ : + "internal" /* Internal */); + } + } + // SyntaxKind.UnparsedSyntheticReference + function emitUnparsedSyntheticReference(unparsed) { + var pos = getTextPosWithWriteLine(); + writeUnparsedNode(unparsed); + if (bundleFileInfo) { + var section = ts.clone(unparsed.section); + section.pos = pos; + section.end = writer.getTextPos(); + bundleFileInfo.sections.push(section); + } + } + // + // Identifiers + // + function emitIdentifier(node) { + var writeText = node.symbol ? writeSymbol : write; + writeText(getTextOfNode(node, /*includeTrivia*/ false), node.symbol); + emitList(node, node.typeArguments, 53776 /* TypeParameters */); // Call emitList directly since it could be an array of TypeParameterDeclarations _or_ type arguments + } + // + // Names + // + function emitPrivateIdentifier(node) { + var writeText = node.symbol ? writeSymbol : write; + writeText(getTextOfNode(node, /*includeTrivia*/ false), node.symbol); + } + function emitQualifiedName(node) { + emitEntityName(node.left); + writePunctuation("."); + emit(node.right); + } + function emitEntityName(node) { + if (node.kind === 75 /* Identifier */) { + emitExpression(node); + } + else { + emit(node); + } + } + function emitComputedPropertyName(node) { + writePunctuation("["); + emitExpression(node.expression); + writePunctuation("]"); + } + // + // Signature elements + // + function emitTypeParameter(node) { + emit(node.name); + if (node.constraint) { + writeSpace(); + writeKeyword("extends"); + writeSpace(); + emit(node.constraint); + } + if (node.default) { + writeSpace(); + writeOperator("="); + writeSpace(); + emit(node.default); + } + } + function emitParameter(node) { + emitDecorators(node, node.decorators); + emitModifiers(node, node.modifiers); + emit(node.dotDotDotToken); + emitNodeWithWriter(node.name, writeParameter); + emit(node.questionToken); + if (node.parent && node.parent.kind === 300 /* JSDocFunctionType */ && !node.name) { + emit(node.type); + } + else { + emitTypeAnnotation(node.type); + } + // The comment position has to fallback to any present node within the parameterdeclaration because as it turns out, the parser can make parameter declarations with _just_ an initializer. + emitInitializer(node.initializer, node.type ? node.type.end : node.questionToken ? node.questionToken.end : node.name ? node.name.end : node.modifiers ? node.modifiers.end : node.decorators ? node.decorators.end : node.pos, node); + } + function emitDecorator(decorator) { + writePunctuation("@"); + emitExpression(decorator.expression); + } + // + // Type members + // + function emitPropertySignature(node) { + emitDecorators(node, node.decorators); + emitModifiers(node, node.modifiers); + emitNodeWithWriter(node.name, writeProperty); + emit(node.questionToken); + emitTypeAnnotation(node.type); + writeTrailingSemicolon(); + } + function emitPropertyDeclaration(node) { + emitDecorators(node, node.decorators); + emitModifiers(node, node.modifiers); + emit(node.name); + emit(node.questionToken); + emit(node.exclamationToken); + emitTypeAnnotation(node.type); + emitInitializer(node.initializer, node.type ? node.type.end : node.questionToken ? node.questionToken.end : node.name.end, node); + writeTrailingSemicolon(); + } + function emitMethodSignature(node) { + pushNameGenerationScope(node); + emitDecorators(node, node.decorators); + emitModifiers(node, node.modifiers); + emit(node.name); + emit(node.questionToken); + emitTypeParameters(node, node.typeParameters); + emitParameters(node, node.parameters); + emitTypeAnnotation(node.type); + writeTrailingSemicolon(); + popNameGenerationScope(node); + } + function emitMethodDeclaration(node) { + emitDecorators(node, node.decorators); + emitModifiers(node, node.modifiers); + emit(node.asteriskToken); + emit(node.name); + emit(node.questionToken); + emitSignatureAndBody(node, emitSignatureHead); + } + function emitConstructor(node) { + emitModifiers(node, node.modifiers); + writeKeyword("constructor"); + emitSignatureAndBody(node, emitSignatureHead); + } + function emitAccessorDeclaration(node) { + emitDecorators(node, node.decorators); + emitModifiers(node, node.modifiers); + writeKeyword(node.kind === 163 /* GetAccessor */ ? "get" : "set"); + writeSpace(); + emit(node.name); + emitSignatureAndBody(node, emitSignatureHead); + } + function emitCallSignature(node) { + pushNameGenerationScope(node); + emitDecorators(node, node.decorators); + emitModifiers(node, node.modifiers); + emitTypeParameters(node, node.typeParameters); + emitParameters(node, node.parameters); + emitTypeAnnotation(node.type); + writeTrailingSemicolon(); + popNameGenerationScope(node); + } + function emitConstructSignature(node) { + pushNameGenerationScope(node); + emitDecorators(node, node.decorators); + emitModifiers(node, node.modifiers); + writeKeyword("new"); + writeSpace(); + emitTypeParameters(node, node.typeParameters); + emitParameters(node, node.parameters); + emitTypeAnnotation(node.type); + writeTrailingSemicolon(); + popNameGenerationScope(node); + } + function emitIndexSignature(node) { + emitDecorators(node, node.decorators); + emitModifiers(node, node.modifiers); + emitParametersForIndexSignature(node, node.parameters); + emitTypeAnnotation(node.type); + writeTrailingSemicolon(); + } + function emitSemicolonClassElement() { + writeTrailingSemicolon(); + } + // + // Types + // + function emitTypePredicate(node) { + if (node.assertsModifier) { + emit(node.assertsModifier); + writeSpace(); + } + emit(node.parameterName); + if (node.type) { + writeSpace(); + writeKeyword("is"); + writeSpace(); + emit(node.type); + } + } + function emitTypeReference(node) { + emit(node.typeName); + emitTypeArguments(node, node.typeArguments); + } + function emitFunctionType(node) { + pushNameGenerationScope(node); + emitTypeParameters(node, node.typeParameters); + emitParametersForArrow(node, node.parameters); + writeSpace(); + writePunctuation("=>"); + writeSpace(); + emit(node.type); + popNameGenerationScope(node); + } + function emitJSDocFunctionType(node) { + writeKeyword("function"); + emitParameters(node, node.parameters); + writePunctuation(":"); + emit(node.type); + } + function emitJSDocNullableType(node) { + writePunctuation("?"); + emit(node.type); + } + function emitJSDocNonNullableType(node) { + writePunctuation("!"); + emit(node.type); + } + function emitJSDocOptionalType(node) { + emit(node.type); + writePunctuation("="); + } + function emitConstructorType(node) { + pushNameGenerationScope(node); + writeKeyword("new"); + writeSpace(); + emitTypeParameters(node, node.typeParameters); + emitParameters(node, node.parameters); + writeSpace(); + writePunctuation("=>"); + writeSpace(); + emit(node.type); + popNameGenerationScope(node); + } + function emitTypeQuery(node) { + writeKeyword("typeof"); + writeSpace(); + emit(node.exprName); + } + function emitTypeLiteral(node) { + writePunctuation("{"); + var flags = ts.getEmitFlags(node) & 1 /* SingleLine */ ? 768 /* SingleLineTypeLiteralMembers */ : 32897 /* MultiLineTypeLiteralMembers */; + emitList(node, node.members, flags | 524288 /* NoSpaceIfEmpty */); + writePunctuation("}"); + } + function emitArrayType(node) { + emit(node.elementType); + writePunctuation("["); + writePunctuation("]"); + } + function emitRestOrJSDocVariadicType(node) { + writePunctuation("..."); + emit(node.type); + } + function emitTupleType(node) { + writePunctuation("["); + emitList(node, node.elementTypes, 528 /* TupleTypeElements */); + writePunctuation("]"); + } + function emitOptionalType(node) { + emit(node.type); + writePunctuation("?"); + } + function emitUnionType(node) { + emitList(node, node.types, 516 /* UnionTypeConstituents */); + } + function emitIntersectionType(node) { + emitList(node, node.types, 520 /* IntersectionTypeConstituents */); + } + function emitConditionalType(node) { + emit(node.checkType); + writeSpace(); + writeKeyword("extends"); + writeSpace(); + emit(node.extendsType); + writeSpace(); + writePunctuation("?"); + writeSpace(); + emit(node.trueType); + writeSpace(); + writePunctuation(":"); + writeSpace(); + emit(node.falseType); + } + function emitInferType(node) { + writeKeyword("infer"); + writeSpace(); + emit(node.typeParameter); + } + function emitParenthesizedType(node) { + writePunctuation("("); + emit(node.type); + writePunctuation(")"); + } + function emitThisType() { + writeKeyword("this"); + } + function emitTypeOperator(node) { + writeTokenText(node.operator, writeKeyword); + writeSpace(); + emit(node.type); + } + function emitIndexedAccessType(node) { + emit(node.objectType); + writePunctuation("["); + emit(node.indexType); + writePunctuation("]"); + } + function emitMappedType(node) { + var emitFlags = ts.getEmitFlags(node); + writePunctuation("{"); + if (emitFlags & 1 /* SingleLine */) { + writeSpace(); + } + else { + writeLine(); + increaseIndent(); + } + if (node.readonlyToken) { + emit(node.readonlyToken); + if (node.readonlyToken.kind !== 138 /* ReadonlyKeyword */) { + writeKeyword("readonly"); + } + writeSpace(); + } + writePunctuation("["); + pipelineEmit(3 /* MappedTypeParameter */, node.typeParameter); + writePunctuation("]"); + if (node.questionToken) { + emit(node.questionToken); + if (node.questionToken.kind !== 57 /* QuestionToken */) { + writePunctuation("?"); + } + } + writePunctuation(":"); + writeSpace(); + emit(node.type); + writeTrailingSemicolon(); + if (emitFlags & 1 /* SingleLine */) { + writeSpace(); + } + else { + writeLine(); + decreaseIndent(); + } + writePunctuation("}"); + } + function emitLiteralType(node) { + emitExpression(node.literal); + } + function emitImportTypeNode(node) { + if (node.isTypeOf) { + writeKeyword("typeof"); + writeSpace(); + } + writeKeyword("import"); + writePunctuation("("); + emit(node.argument); + writePunctuation(")"); + if (node.qualifier) { + writePunctuation("."); + emit(node.qualifier); + } + emitTypeArguments(node, node.typeArguments); + } + // + // Binding patterns + // + function emitObjectBindingPattern(node) { + writePunctuation("{"); + emitList(node, node.elements, 525136 /* ObjectBindingPatternElements */); + writePunctuation("}"); + } + function emitArrayBindingPattern(node) { + writePunctuation("["); + emitList(node, node.elements, 524880 /* ArrayBindingPatternElements */); + writePunctuation("]"); + } + function emitBindingElement(node) { + emit(node.dotDotDotToken); + if (node.propertyName) { + emit(node.propertyName); + writePunctuation(":"); + writeSpace(); + } + emit(node.name); + emitInitializer(node.initializer, node.name.end, node); + } + // + // Expressions + // + function emitArrayLiteralExpression(node) { + var elements = node.elements; + var preferNewLine = node.multiLine ? 65536 /* PreferNewLine */ : 0 /* None */; + emitExpressionList(node, elements, 8914 /* ArrayLiteralExpressionElements */ | preferNewLine); + } + function emitObjectLiteralExpression(node) { + ts.forEach(node.properties, generateMemberNames); + var indentedFlag = ts.getEmitFlags(node) & 65536 /* Indented */; + if (indentedFlag) { + increaseIndent(); + } + var preferNewLine = node.multiLine ? 65536 /* PreferNewLine */ : 0 /* None */; + var allowTrailingComma = currentSourceFile.languageVersion >= 1 /* ES5 */ && !ts.isJsonSourceFile(currentSourceFile) ? 64 /* AllowTrailingComma */ : 0 /* None */; + emitList(node, node.properties, 526226 /* ObjectLiteralExpressionProperties */ | allowTrailingComma | preferNewLine); + if (indentedFlag) { + decreaseIndent(); + } + } + function emitPropertyAccessExpression(node) { + var expression = ts.cast(emitExpression(node.expression), ts.isExpression); + var token = node.questionDotToken || ts.createNode(24 /* DotToken */, node.expression.end, node.name.pos); + var linesBeforeDot = getLinesBetweenNodes(node, node.expression, token); + var linesAfterDot = getLinesBetweenNodes(node, token, node.name); + writeLinesAndIndent(linesBeforeDot, /*writeSpaceIfNotIndenting*/ false); + var shouldEmitDotDot = token.kind !== 28 /* QuestionDotToken */ && + mayNeedDotDotForPropertyAccess(expression) && + !writer.hasTrailingComment() && + !writer.hasTrailingWhitespace(); + if (shouldEmitDotDot) { + writePunctuation("."); + } + if (node.questionDotToken) { + emit(token); + } + else { + emitTokenWithComment(token.kind, node.expression.end, writePunctuation, node); + } + writeLinesAndIndent(linesAfterDot, /*writeSpaceIfNotIndenting*/ false); + emit(node.name); + decreaseIndentIf(linesBeforeDot, linesAfterDot); + } + // 1..toString is a valid property access, emit a dot after the literal + // Also emit a dot if expression is a integer const enum value - it will appear in generated code as numeric literal + function mayNeedDotDotForPropertyAccess(expression) { + expression = ts.skipPartiallyEmittedExpressions(expression); + if (ts.isNumericLiteral(expression)) { + // check if numeric literal is a decimal literal that was originally written with a dot + var text = getLiteralTextOfNode(expression, /*neverAsciiEscape*/ true, /*jsxAttributeEscape*/ false); + // If he number will be printed verbatim and it doesn't already contain a dot, add one + // if the expression doesn't have any comments that will be emitted. + return !expression.numericLiteralFlags && !ts.stringContains(text, ts.tokenToString(24 /* DotToken */)); + } + else if (ts.isAccessExpression(expression)) { + // check if constant enum value is integer + var constantValue = ts.getConstantValue(expression); + // isFinite handles cases when constantValue is undefined + return typeof constantValue === "number" && isFinite(constantValue) + && Math.floor(constantValue) === constantValue; + } + } + function emitElementAccessExpression(node) { + emitExpression(node.expression); + emit(node.questionDotToken); + emitTokenWithComment(22 /* OpenBracketToken */, node.expression.end, writePunctuation, node); + emitExpression(node.argumentExpression); + emitTokenWithComment(23 /* CloseBracketToken */, node.argumentExpression.end, writePunctuation, node); + } + function emitCallExpression(node) { + emitExpression(node.expression); + emit(node.questionDotToken); + emitTypeArguments(node, node.typeArguments); + emitExpressionList(node, node.arguments, 2576 /* CallExpressionArguments */); + } + function emitNewExpression(node) { + emitTokenWithComment(99 /* NewKeyword */, node.pos, writeKeyword, node); + writeSpace(); + emitExpression(node.expression); + emitTypeArguments(node, node.typeArguments); + emitExpressionList(node, node.arguments, 18960 /* NewExpressionArguments */); + } + function emitTaggedTemplateExpression(node) { + emitExpression(node.tag); + emitTypeArguments(node, node.typeArguments); + writeSpace(); + emitExpression(node.template); + } + function emitTypeAssertionExpression(node) { + writePunctuation("<"); + emit(node.type); + writePunctuation(">"); + emitExpression(node.expression); + } + function emitParenthesizedExpression(node) { + var openParenPos = emitTokenWithComment(20 /* OpenParenToken */, node.pos, writePunctuation, node); + var indented = writeLineSeparatorsAndIndentBefore(node.expression, node); + emitExpression(node.expression); + writeLineSeparatorsAfter(node.expression, node); + decreaseIndentIf(indented); + emitTokenWithComment(21 /* CloseParenToken */, node.expression ? node.expression.end : openParenPos, writePunctuation, node); + } + function emitFunctionExpression(node) { + generateNameIfNeeded(node.name); + emitFunctionDeclarationOrExpression(node); + } + function emitArrowFunction(node) { + emitDecorators(node, node.decorators); + emitModifiers(node, node.modifiers); + emitSignatureAndBody(node, emitArrowFunctionHead); + } + function emitArrowFunctionHead(node) { + emitTypeParameters(node, node.typeParameters); + emitParametersForArrow(node, node.parameters); + emitTypeAnnotation(node.type); + writeSpace(); + emit(node.equalsGreaterThanToken); + } + function emitDeleteExpression(node) { + emitTokenWithComment(85 /* DeleteKeyword */, node.pos, writeKeyword, node); + writeSpace(); + emitExpression(node.expression); + } + function emitTypeOfExpression(node) { + emitTokenWithComment(108 /* TypeOfKeyword */, node.pos, writeKeyword, node); + writeSpace(); + emitExpression(node.expression); + } + function emitVoidExpression(node) { + emitTokenWithComment(110 /* VoidKeyword */, node.pos, writeKeyword, node); + writeSpace(); + emitExpression(node.expression); + } + function emitAwaitExpression(node) { + emitTokenWithComment(127 /* AwaitKeyword */, node.pos, writeKeyword, node); + writeSpace(); + emitExpression(node.expression); + } + function emitPrefixUnaryExpression(node) { + writeTokenText(node.operator, writeOperator); + if (shouldEmitWhitespaceBeforeOperand(node)) { + writeSpace(); + } + emitExpression(node.operand); + } + function shouldEmitWhitespaceBeforeOperand(node) { + // In some cases, we need to emit a space between the operator and the operand. One obvious case + // is when the operator is an identifier, like delete or typeof. We also need to do this for plus + // and minus expressions in certain cases. Specifically, consider the following two cases (parens + // are just for clarity of exposition, and not part of the source code): + // + // (+(+1)) + // (+(++1)) + // + // We need to emit a space in both cases. In the first case, the absence of a space will make + // the resulting expression a prefix increment operation. And in the second, it will make the resulting + // expression a prefix increment whose operand is a plus expression - (++(+x)) + // The same is true of minus of course. + var operand = node.operand; + return operand.kind === 207 /* PrefixUnaryExpression */ + && ((node.operator === 39 /* PlusToken */ && (operand.operator === 39 /* PlusToken */ || operand.operator === 45 /* PlusPlusToken */)) + || (node.operator === 40 /* MinusToken */ && (operand.operator === 40 /* MinusToken */ || operand.operator === 46 /* MinusMinusToken */))); + } + function emitPostfixUnaryExpression(node) { + emitExpression(node.operand); + writeTokenText(node.operator, writeOperator); + } + var EmitBinaryExpressionState; + (function (EmitBinaryExpressionState) { + EmitBinaryExpressionState[EmitBinaryExpressionState["EmitLeft"] = 0] = "EmitLeft"; + EmitBinaryExpressionState[EmitBinaryExpressionState["EmitRight"] = 1] = "EmitRight"; + EmitBinaryExpressionState[EmitBinaryExpressionState["FinishEmit"] = 2] = "FinishEmit"; + })(EmitBinaryExpressionState || (EmitBinaryExpressionState = {})); + /** + * emitBinaryExpression includes an embedded work stack to attempt to handle as many nested binary expressions + * as possible without creating any additional stack frames. This can only be done when the emit pipeline does + * not require notification/substitution/comment/sourcemap decorations. + */ + function emitBinaryExpression(node) { + var nodeStack = [node]; + var stateStack = [0 /* EmitLeft */]; + var stackIndex = 0; + while (stackIndex >= 0) { + node = nodeStack[stackIndex]; + switch (stateStack[stackIndex]) { + case 0 /* EmitLeft */: { + maybePipelineEmitExpression(node.left); + break; + } + case 1 /* EmitRight */: { + var isCommaOperator = node.operatorToken.kind !== 27 /* CommaToken */; + var linesBeforeOperator = getLinesBetweenNodes(node, node.left, node.operatorToken); + var linesAfterOperator = getLinesBetweenNodes(node, node.operatorToken, node.right); + writeLinesAndIndent(linesBeforeOperator, isCommaOperator); + emitLeadingCommentsOfPosition(node.operatorToken.pos); + writeTokenNode(node.operatorToken, node.operatorToken.kind === 97 /* InKeyword */ ? writeKeyword : writeOperator); + emitTrailingCommentsOfPosition(node.operatorToken.end, /*prefixSpace*/ true); // Binary operators should have a space before the comment starts + writeLinesAndIndent(linesAfterOperator, /*writeSpaceIfNotIndenting*/ true); + maybePipelineEmitExpression(node.right); + break; + } + case 2 /* FinishEmit */: { + var linesBeforeOperator = getLinesBetweenNodes(node, node.left, node.operatorToken); + var linesAfterOperator = getLinesBetweenNodes(node, node.operatorToken, node.right); + decreaseIndentIf(linesBeforeOperator, linesAfterOperator); + stackIndex--; + break; + } + default: return ts.Debug.fail("Invalid state " + stateStack[stackIndex] + " for emitBinaryExpressionWorker"); + } + } + function maybePipelineEmitExpression(next) { + // Advance the state of this unit of work, + stateStack[stackIndex]++; + // Then actually do the work of emitting the node `next` returned by the prior state + // The following section should be identical to `pipelineEmit` save it assumes EmitHint.Expression and offloads + // binary expression handling, where possible, to the contained work queue + // #region trampolinePipelineEmit + var savedLastNode = lastNode; + var savedLastSubstitution = lastSubstitution; + lastNode = next; + lastSubstitution = undefined; + var pipelinePhase = getPipelinePhase(0 /* Notification */, 1 /* Expression */, next); + if (pipelinePhase === pipelineEmitWithHint && ts.isBinaryExpression(next)) { + // If the target pipeline phase is emit directly, and the next node's also a binary expression, + // skip all the intermediate indirection and push the expression directly onto the work stack + stackIndex++; + stateStack[stackIndex] = 0 /* EmitLeft */; + nodeStack[stackIndex] = next; + } + else { + pipelinePhase(1 /* Expression */, next); + } + ts.Debug.assert(lastNode === next); + lastNode = savedLastNode; + lastSubstitution = savedLastSubstitution; + // #endregion trampolinePipelineEmit + } + } + function emitConditionalExpression(node) { + var linesBeforeQuestion = getLinesBetweenNodes(node, node.condition, node.questionToken); + var linesAfterQuestion = getLinesBetweenNodes(node, node.questionToken, node.whenTrue); + var linesBeforeColon = getLinesBetweenNodes(node, node.whenTrue, node.colonToken); + var linesAfterColon = getLinesBetweenNodes(node, node.colonToken, node.whenFalse); + emitExpression(node.condition); + writeLinesAndIndent(linesBeforeQuestion, /*writeSpaceIfNotIndenting*/ true); + emit(node.questionToken); + writeLinesAndIndent(linesAfterQuestion, /*writeSpaceIfNotIndenting*/ true); + emitExpression(node.whenTrue); + decreaseIndentIf(linesBeforeQuestion, linesAfterQuestion); + writeLinesAndIndent(linesBeforeColon, /*writeSpaceIfNotIndenting*/ true); + emit(node.colonToken); + writeLinesAndIndent(linesAfterColon, /*writeSpaceIfNotIndenting*/ true); + emitExpression(node.whenFalse); + decreaseIndentIf(linesBeforeColon, linesAfterColon); + } + function emitTemplateExpression(node) { + emit(node.head); + emitList(node, node.templateSpans, 262144 /* TemplateExpressionSpans */); + } + function emitYieldExpression(node) { + emitTokenWithComment(121 /* YieldKeyword */, node.pos, writeKeyword, node); + emit(node.asteriskToken); + emitExpressionWithLeadingSpace(node.expression); + } + function emitSpreadExpression(node) { + emitTokenWithComment(25 /* DotDotDotToken */, node.pos, writePunctuation, node); + emitExpression(node.expression); + } + function emitClassExpression(node) { + generateNameIfNeeded(node.name); + emitClassDeclarationOrExpression(node); + } + function emitExpressionWithTypeArguments(node) { + emitExpression(node.expression); + emitTypeArguments(node, node.typeArguments); + } + function emitAsExpression(node) { + emitExpression(node.expression); + if (node.type) { + writeSpace(); + writeKeyword("as"); + writeSpace(); + emit(node.type); + } + } + function emitNonNullExpression(node) { + emitExpression(node.expression); + writeOperator("!"); + } + function emitMetaProperty(node) { + writeToken(node.keywordToken, node.pos, writePunctuation); + writePunctuation("."); + emit(node.name); + } + // + // Misc + // + function emitTemplateSpan(node) { + emitExpression(node.expression); + emit(node.literal); + } + // + // Statements + // + function emitBlock(node) { + emitBlockStatements(node, /*forceSingleLine*/ !node.multiLine && isEmptyBlock(node)); + } + function emitBlockStatements(node, forceSingleLine) { + emitTokenWithComment(18 /* OpenBraceToken */, node.pos, writePunctuation, /*contextNode*/ node); + var format = forceSingleLine || ts.getEmitFlags(node) & 1 /* SingleLine */ ? 768 /* SingleLineBlockStatements */ : 129 /* MultiLineBlockStatements */; + emitList(node, node.statements, format); + emitTokenWithComment(19 /* CloseBraceToken */, node.statements.end, writePunctuation, /*contextNode*/ node, /*indentLeading*/ !!(format & 1 /* MultiLine */)); + } + function emitVariableStatement(node) { + emitModifiers(node, node.modifiers); + emit(node.declarationList); + writeTrailingSemicolon(); + } + function emitEmptyStatement(isEmbeddedStatement) { + // While most trailing semicolons are possibly insignificant, an embedded "empty" + // statement is significant and cannot be elided by a trailing-semicolon-omitting writer. + if (isEmbeddedStatement) { + writePunctuation(";"); + } + else { + writeTrailingSemicolon(); + } + } + function emitExpressionStatement(node) { + emitExpression(node.expression); + // Emit semicolon in non json files + // or if json file that created synthesized expression(eg.define expression statement when --out and amd code generation) + if (!ts.isJsonSourceFile(currentSourceFile) || ts.nodeIsSynthesized(node.expression)) { + writeTrailingSemicolon(); + } + } + function emitIfStatement(node) { + var openParenPos = emitTokenWithComment(95 /* IfKeyword */, node.pos, writeKeyword, node); + writeSpace(); + emitTokenWithComment(20 /* OpenParenToken */, openParenPos, writePunctuation, node); + emitExpression(node.expression); + emitTokenWithComment(21 /* CloseParenToken */, node.expression.end, writePunctuation, node); + emitEmbeddedStatement(node, node.thenStatement); + if (node.elseStatement) { + writeLineOrSpace(node); + emitTokenWithComment(87 /* ElseKeyword */, node.thenStatement.end, writeKeyword, node); + if (node.elseStatement.kind === 227 /* IfStatement */) { + writeSpace(); + emit(node.elseStatement); + } + else { + emitEmbeddedStatement(node, node.elseStatement); + } + } + } + function emitWhileClause(node, startPos) { + var openParenPos = emitTokenWithComment(111 /* WhileKeyword */, startPos, writeKeyword, node); + writeSpace(); + emitTokenWithComment(20 /* OpenParenToken */, openParenPos, writePunctuation, node); + emitExpression(node.expression); + emitTokenWithComment(21 /* CloseParenToken */, node.expression.end, writePunctuation, node); + } + function emitDoStatement(node) { + emitTokenWithComment(86 /* DoKeyword */, node.pos, writeKeyword, node); + emitEmbeddedStatement(node, node.statement); + if (ts.isBlock(node.statement)) { + writeSpace(); + } + else { + writeLineOrSpace(node); + } + emitWhileClause(node, node.statement.end); + writeTrailingSemicolon(); + } + function emitWhileStatement(node) { + emitWhileClause(node, node.pos); + emitEmbeddedStatement(node, node.statement); + } + function emitForStatement(node) { + var openParenPos = emitTokenWithComment(93 /* ForKeyword */, node.pos, writeKeyword, node); + writeSpace(); + var pos = emitTokenWithComment(20 /* OpenParenToken */, openParenPos, writePunctuation, /*contextNode*/ node); + emitForBinding(node.initializer); + pos = emitTokenWithComment(26 /* SemicolonToken */, node.initializer ? node.initializer.end : pos, writePunctuation, node); + emitExpressionWithLeadingSpace(node.condition); + pos = emitTokenWithComment(26 /* SemicolonToken */, node.condition ? node.condition.end : pos, writePunctuation, node); + emitExpressionWithLeadingSpace(node.incrementor); + emitTokenWithComment(21 /* CloseParenToken */, node.incrementor ? node.incrementor.end : pos, writePunctuation, node); + emitEmbeddedStatement(node, node.statement); + } + function emitForInStatement(node) { + var openParenPos = emitTokenWithComment(93 /* ForKeyword */, node.pos, writeKeyword, node); + writeSpace(); + emitTokenWithComment(20 /* OpenParenToken */, openParenPos, writePunctuation, node); + emitForBinding(node.initializer); + writeSpace(); + emitTokenWithComment(97 /* InKeyword */, node.initializer.end, writeKeyword, node); + writeSpace(); + emitExpression(node.expression); + emitTokenWithComment(21 /* CloseParenToken */, node.expression.end, writePunctuation, node); + emitEmbeddedStatement(node, node.statement); + } + function emitForOfStatement(node) { + var openParenPos = emitTokenWithComment(93 /* ForKeyword */, node.pos, writeKeyword, node); + writeSpace(); + emitWithTrailingSpace(node.awaitModifier); + emitTokenWithComment(20 /* OpenParenToken */, openParenPos, writePunctuation, node); + emitForBinding(node.initializer); + writeSpace(); + emitTokenWithComment(152 /* OfKeyword */, node.initializer.end, writeKeyword, node); + writeSpace(); + emitExpression(node.expression); + emitTokenWithComment(21 /* CloseParenToken */, node.expression.end, writePunctuation, node); + emitEmbeddedStatement(node, node.statement); + } + function emitForBinding(node) { + if (node !== undefined) { + if (node.kind === 243 /* VariableDeclarationList */) { + emit(node); + } + else { + emitExpression(node); + } + } + } + function emitContinueStatement(node) { + emitTokenWithComment(82 /* ContinueKeyword */, node.pos, writeKeyword, node); + emitWithLeadingSpace(node.label); + writeTrailingSemicolon(); + } + function emitBreakStatement(node) { + emitTokenWithComment(77 /* BreakKeyword */, node.pos, writeKeyword, node); + emitWithLeadingSpace(node.label); + writeTrailingSemicolon(); + } + function emitTokenWithComment(token, pos, writer, contextNode, indentLeading) { + var node = ts.getParseTreeNode(contextNode); + var isSimilarNode = node && node.kind === contextNode.kind; + var startPos = pos; + if (isSimilarNode && currentSourceFile) { + pos = ts.skipTrivia(currentSourceFile.text, pos); + } + if (emitLeadingCommentsOfPosition && isSimilarNode && contextNode.pos !== startPos) { + var needsIndent = indentLeading && currentSourceFile && !ts.positionsAreOnSameLine(startPos, pos, currentSourceFile); + if (needsIndent) { + increaseIndent(); + } + emitLeadingCommentsOfPosition(startPos); + if (needsIndent) { + decreaseIndent(); + } + } + pos = writeTokenText(token, writer, pos); + if (emitTrailingCommentsOfPosition && isSimilarNode && contextNode.end !== pos) { + emitTrailingCommentsOfPosition(pos, /*prefixSpace*/ true); + } + return pos; + } + function emitReturnStatement(node) { + emitTokenWithComment(101 /* ReturnKeyword */, node.pos, writeKeyword, /*contextNode*/ node); + emitExpressionWithLeadingSpace(node.expression); + writeTrailingSemicolon(); + } + function emitWithStatement(node) { + var openParenPos = emitTokenWithComment(112 /* WithKeyword */, node.pos, writeKeyword, node); + writeSpace(); + emitTokenWithComment(20 /* OpenParenToken */, openParenPos, writePunctuation, node); + emitExpression(node.expression); + emitTokenWithComment(21 /* CloseParenToken */, node.expression.end, writePunctuation, node); + emitEmbeddedStatement(node, node.statement); + } + function emitSwitchStatement(node) { + var openParenPos = emitTokenWithComment(103 /* SwitchKeyword */, node.pos, writeKeyword, node); + writeSpace(); + emitTokenWithComment(20 /* OpenParenToken */, openParenPos, writePunctuation, node); + emitExpression(node.expression); + emitTokenWithComment(21 /* CloseParenToken */, node.expression.end, writePunctuation, node); + writeSpace(); + emit(node.caseBlock); + } + function emitLabeledStatement(node) { + emit(node.label); + emitTokenWithComment(58 /* ColonToken */, node.label.end, writePunctuation, node); + writeSpace(); + emit(node.statement); + } + function emitThrowStatement(node) { + emitTokenWithComment(105 /* ThrowKeyword */, node.pos, writeKeyword, node); + emitExpressionWithLeadingSpace(node.expression); + writeTrailingSemicolon(); + } + function emitTryStatement(node) { + emitTokenWithComment(107 /* TryKeyword */, node.pos, writeKeyword, node); + writeSpace(); + emit(node.tryBlock); + if (node.catchClause) { + writeLineOrSpace(node); + emit(node.catchClause); + } + if (node.finallyBlock) { + writeLineOrSpace(node); + emitTokenWithComment(92 /* FinallyKeyword */, (node.catchClause || node.tryBlock).end, writeKeyword, node); + writeSpace(); + emit(node.finallyBlock); + } + } + function emitDebuggerStatement(node) { + writeToken(83 /* DebuggerKeyword */, node.pos, writeKeyword); + writeTrailingSemicolon(); + } + // + // Declarations + // + function emitVariableDeclaration(node) { + emit(node.name); + emit(node.exclamationToken); + emitTypeAnnotation(node.type); + emitInitializer(node.initializer, node.type ? node.type.end : node.name.end, node); + } + function emitVariableDeclarationList(node) { + writeKeyword(ts.isLet(node) ? "let" : ts.isVarConst(node) ? "const" : "var"); + writeSpace(); + emitList(node, node.declarations, 528 /* VariableDeclarationList */); + } + function emitFunctionDeclaration(node) { + emitFunctionDeclarationOrExpression(node); + } + function emitFunctionDeclarationOrExpression(node) { + emitDecorators(node, node.decorators); + emitModifiers(node, node.modifiers); + writeKeyword("function"); + emit(node.asteriskToken); + writeSpace(); + emitIdentifierName(node.name); + emitSignatureAndBody(node, emitSignatureHead); + } + function emitBlockCallback(_hint, body) { + emitBlockFunctionBody(body); + } + function emitSignatureAndBody(node, emitSignatureHead) { + var body = node.body; + if (body) { + if (ts.isBlock(body)) { + var indentedFlag = ts.getEmitFlags(node) & 65536 /* Indented */; + if (indentedFlag) { + increaseIndent(); + } + pushNameGenerationScope(node); + ts.forEach(node.parameters, generateNames); + generateNames(node.body); + emitSignatureHead(node); + if (onEmitNode) { + onEmitNode(4 /* Unspecified */, body, emitBlockCallback); + } + else { + emitBlockFunctionBody(body); + } + popNameGenerationScope(node); + if (indentedFlag) { + decreaseIndent(); + } + } + else { + emitSignatureHead(node); + writeSpace(); + emitExpression(body); + } + } + else { + emitSignatureHead(node); + writeTrailingSemicolon(); + } + } + function emitSignatureHead(node) { + emitTypeParameters(node, node.typeParameters); + emitParameters(node, node.parameters); + emitTypeAnnotation(node.type); + } + function shouldEmitBlockFunctionBodyOnSingleLine(body) { + // We must emit a function body as a single-line body in the following case: + // * The body has NodeEmitFlags.SingleLine specified. + // We must emit a function body as a multi-line body in the following cases: + // * The body is explicitly marked as multi-line. + // * A non-synthesized body's start and end position are on different lines. + // * Any statement in the body starts on a new line. + if (ts.getEmitFlags(body) & 1 /* SingleLine */) { + return true; + } + if (body.multiLine) { + return false; + } + if (!ts.nodeIsSynthesized(body) && !ts.rangeIsOnSingleLine(body, currentSourceFile)) { + return false; + } + if (getLeadingLineTerminatorCount(body, body.statements, 2 /* PreserveLines */) + || getClosingLineTerminatorCount(body, body.statements, 2 /* PreserveLines */)) { + return false; + } + var previousStatement; + for (var _a = 0, _b = body.statements; _a < _b.length; _a++) { + var statement = _b[_a]; + if (getSeparatingLineTerminatorCount(previousStatement, statement, 2 /* PreserveLines */) > 0) { + return false; + } + previousStatement = statement; + } + return true; + } + function emitBlockFunctionBody(body) { + writeSpace(); + writePunctuation("{"); + increaseIndent(); + var emitBlockFunctionBody = shouldEmitBlockFunctionBodyOnSingleLine(body) + ? emitBlockFunctionBodyOnSingleLine + : emitBlockFunctionBodyWorker; + if (emitBodyWithDetachedComments) { + emitBodyWithDetachedComments(body, body.statements, emitBlockFunctionBody); + } + else { + emitBlockFunctionBody(body); + } + decreaseIndent(); + writeToken(19 /* CloseBraceToken */, body.statements.end, writePunctuation, body); + } + function emitBlockFunctionBodyOnSingleLine(body) { + emitBlockFunctionBodyWorker(body, /*emitBlockFunctionBodyOnSingleLine*/ true); + } + function emitBlockFunctionBodyWorker(body, emitBlockFunctionBodyOnSingleLine) { + // Emit all the prologue directives (like "use strict"). + var statementOffset = emitPrologueDirectives(body.statements); + var pos = writer.getTextPos(); + emitHelpers(body); + if (statementOffset === 0 && pos === writer.getTextPos() && emitBlockFunctionBodyOnSingleLine) { + decreaseIndent(); + emitList(body, body.statements, 768 /* SingleLineFunctionBodyStatements */); + increaseIndent(); + } + else { + emitList(body, body.statements, 1 /* MultiLineFunctionBodyStatements */, statementOffset); + } + } + function emitClassDeclaration(node) { + emitClassDeclarationOrExpression(node); + } + function emitClassDeclarationOrExpression(node) { + ts.forEach(node.members, generateMemberNames); + emitDecorators(node, node.decorators); + emitModifiers(node, node.modifiers); + writeKeyword("class"); + if (node.name) { + writeSpace(); + emitIdentifierName(node.name); + } + var indentedFlag = ts.getEmitFlags(node) & 65536 /* Indented */; + if (indentedFlag) { + increaseIndent(); + } + emitTypeParameters(node, node.typeParameters); + emitList(node, node.heritageClauses, 0 /* ClassHeritageClauses */); + writeSpace(); + writePunctuation("{"); + emitList(node, node.members, 129 /* ClassMembers */); + writePunctuation("}"); + if (indentedFlag) { + decreaseIndent(); + } + } + function emitInterfaceDeclaration(node) { + emitDecorators(node, node.decorators); + emitModifiers(node, node.modifiers); + writeKeyword("interface"); + writeSpace(); + emit(node.name); + emitTypeParameters(node, node.typeParameters); + emitList(node, node.heritageClauses, 512 /* HeritageClauses */); + writeSpace(); + writePunctuation("{"); + emitList(node, node.members, 129 /* InterfaceMembers */); + writePunctuation("}"); + } + function emitTypeAliasDeclaration(node) { + emitDecorators(node, node.decorators); + emitModifiers(node, node.modifiers); + writeKeyword("type"); + writeSpace(); + emit(node.name); + emitTypeParameters(node, node.typeParameters); + writeSpace(); + writePunctuation("="); + writeSpace(); + emit(node.type); + writeTrailingSemicolon(); + } + function emitEnumDeclaration(node) { + emitModifiers(node, node.modifiers); + writeKeyword("enum"); + writeSpace(); + emit(node.name); + writeSpace(); + writePunctuation("{"); + emitList(node, node.members, 145 /* EnumMembers */); + writePunctuation("}"); + } + function emitModuleDeclaration(node) { + emitModifiers(node, node.modifiers); + if (~node.flags & 1024 /* GlobalAugmentation */) { + writeKeyword(node.flags & 16 /* Namespace */ ? "namespace" : "module"); + writeSpace(); + } + emit(node.name); + var body = node.body; + if (!body) + return writeTrailingSemicolon(); + while (body.kind === 249 /* ModuleDeclaration */) { + writePunctuation("."); + emit(body.name); + body = body.body; + } + writeSpace(); + emit(body); + } + function emitModuleBlock(node) { + pushNameGenerationScope(node); + ts.forEach(node.statements, generateNames); + emitBlockStatements(node, /*forceSingleLine*/ isEmptyBlock(node)); + popNameGenerationScope(node); + } + function emitCaseBlock(node) { + emitTokenWithComment(18 /* OpenBraceToken */, node.pos, writePunctuation, node); + emitList(node, node.clauses, 129 /* CaseBlockClauses */); + emitTokenWithComment(19 /* CloseBraceToken */, node.clauses.end, writePunctuation, node, /*indentLeading*/ true); + } + function emitImportEqualsDeclaration(node) { + emitModifiers(node, node.modifiers); + emitTokenWithComment(96 /* ImportKeyword */, node.modifiers ? node.modifiers.end : node.pos, writeKeyword, node); + writeSpace(); + emit(node.name); + writeSpace(); + emitTokenWithComment(62 /* EqualsToken */, node.name.end, writePunctuation, node); + writeSpace(); + emitModuleReference(node.moduleReference); + writeTrailingSemicolon(); + } + function emitModuleReference(node) { + if (node.kind === 75 /* Identifier */) { + emitExpression(node); + } + else { + emit(node); + } + } + function emitImportDeclaration(node) { + emitModifiers(node, node.modifiers); + emitTokenWithComment(96 /* ImportKeyword */, node.modifiers ? node.modifiers.end : node.pos, writeKeyword, node); + writeSpace(); + if (node.importClause) { + emit(node.importClause); + writeSpace(); + emitTokenWithComment(149 /* FromKeyword */, node.importClause.end, writeKeyword, node); + writeSpace(); + } + emitExpression(node.moduleSpecifier); + writeTrailingSemicolon(); + } + function emitImportClause(node) { + if (node.isTypeOnly) { + emitTokenWithComment(145 /* TypeKeyword */, node.pos, writeKeyword, node); + writeSpace(); + } + emit(node.name); + if (node.name && node.namedBindings) { + emitTokenWithComment(27 /* CommaToken */, node.name.end, writePunctuation, node); + writeSpace(); + } + emit(node.namedBindings); + } + function emitNamespaceImport(node) { + var asPos = emitTokenWithComment(41 /* AsteriskToken */, node.pos, writePunctuation, node); + writeSpace(); + emitTokenWithComment(123 /* AsKeyword */, asPos, writeKeyword, node); + writeSpace(); + emit(node.name); + } + function emitNamedImports(node) { + emitNamedImportsOrExports(node); + } + function emitImportSpecifier(node) { + emitImportOrExportSpecifier(node); + } + function emitExportAssignment(node) { + var nextPos = emitTokenWithComment(89 /* ExportKeyword */, node.pos, writeKeyword, node); + writeSpace(); + if (node.isExportEquals) { + emitTokenWithComment(62 /* EqualsToken */, nextPos, writeOperator, node); + } + else { + emitTokenWithComment(84 /* DefaultKeyword */, nextPos, writeKeyword, node); + } + writeSpace(); + emitExpression(node.expression); + writeTrailingSemicolon(); + } + function emitExportDeclaration(node) { + var nextPos = emitTokenWithComment(89 /* ExportKeyword */, node.pos, writeKeyword, node); + writeSpace(); + if (node.isTypeOnly) { + nextPos = emitTokenWithComment(145 /* TypeKeyword */, nextPos, writeKeyword, node); + writeSpace(); + } + if (node.exportClause) { + emit(node.exportClause); + } + else { + nextPos = emitTokenWithComment(41 /* AsteriskToken */, nextPos, writePunctuation, node); + } + if (node.moduleSpecifier) { + writeSpace(); + var fromPos = node.exportClause ? node.exportClause.end : nextPos; + emitTokenWithComment(149 /* FromKeyword */, fromPos, writeKeyword, node); + writeSpace(); + emitExpression(node.moduleSpecifier); + } + writeTrailingSemicolon(); + } + function emitNamespaceExportDeclaration(node) { + var nextPos = emitTokenWithComment(89 /* ExportKeyword */, node.pos, writeKeyword, node); + writeSpace(); + nextPos = emitTokenWithComment(123 /* AsKeyword */, nextPos, writeKeyword, node); + writeSpace(); + nextPos = emitTokenWithComment(136 /* NamespaceKeyword */, nextPos, writeKeyword, node); + writeSpace(); + emit(node.name); + writeTrailingSemicolon(); + } + function emitNamespaceExport(node) { + var asPos = emitTokenWithComment(41 /* AsteriskToken */, node.pos, writePunctuation, node); + writeSpace(); + emitTokenWithComment(123 /* AsKeyword */, asPos, writeKeyword, node); + writeSpace(); + emit(node.name); + } + function emitNamedExports(node) { + emitNamedImportsOrExports(node); + } + function emitExportSpecifier(node) { + emitImportOrExportSpecifier(node); + } + function emitNamedImportsOrExports(node) { + writePunctuation("{"); + emitList(node, node.elements, 525136 /* NamedImportsOrExportsElements */); + writePunctuation("}"); + } + function emitImportOrExportSpecifier(node) { + if (node.propertyName) { + emit(node.propertyName); + writeSpace(); + emitTokenWithComment(123 /* AsKeyword */, node.propertyName.end, writeKeyword, node); + writeSpace(); + } + emit(node.name); + } + // + // Module references + // + function emitExternalModuleReference(node) { + writeKeyword("require"); + writePunctuation("("); + emitExpression(node.expression); + writePunctuation(")"); + } + // + // JSX + // + function emitJsxElement(node) { + emit(node.openingElement); + emitList(node, node.children, 262144 /* JsxElementOrFragmentChildren */); + emit(node.closingElement); + } + function emitJsxSelfClosingElement(node) { + writePunctuation("<"); + emitJsxTagName(node.tagName); + emitTypeArguments(node, node.typeArguments); + writeSpace(); + emit(node.attributes); + writePunctuation("/>"); + } + function emitJsxFragment(node) { + emit(node.openingFragment); + emitList(node, node.children, 262144 /* JsxElementOrFragmentChildren */); + emit(node.closingFragment); + } + function emitJsxOpeningElementOrFragment(node) { + writePunctuation("<"); + if (ts.isJsxOpeningElement(node)) { + var indented = writeLineSeparatorsAndIndentBefore(node.tagName, node); + emitJsxTagName(node.tagName); + emitTypeArguments(node, node.typeArguments); + if (node.attributes.properties && node.attributes.properties.length > 0) { + writeSpace(); + } + emit(node.attributes); + writeLineSeparatorsAfter(node.attributes, node); + decreaseIndentIf(indented); + } + writePunctuation(">"); + } + function emitJsxText(node) { + writer.writeLiteral(node.text); + } + function emitJsxClosingElementOrFragment(node) { + writePunctuation(""); + } + function emitJsxAttributes(node) { + emitList(node, node.properties, 262656 /* JsxElementAttributes */); + } + function emitJsxAttribute(node) { + emit(node.name); + emitNodeWithPrefix("=", writePunctuation, node.initializer, emitJsxAttributeValue); + } + function emitJsxSpreadAttribute(node) { + writePunctuation("{..."); + emitExpression(node.expression); + writePunctuation("}"); + } + function emitJsxExpression(node) { + if (node.expression) { + writePunctuation("{"); + emit(node.dotDotDotToken); + emitExpression(node.expression); + writePunctuation("}"); + } + } + function emitJsxTagName(node) { + if (node.kind === 75 /* Identifier */) { + emitExpression(node); + } + else { + emit(node); + } + } + // + // Clauses + // + function emitCaseClause(node) { + emitTokenWithComment(78 /* CaseKeyword */, node.pos, writeKeyword, node); + writeSpace(); + emitExpression(node.expression); + emitCaseOrDefaultClauseRest(node, node.statements, node.expression.end); + } + function emitDefaultClause(node) { + var pos = emitTokenWithComment(84 /* DefaultKeyword */, node.pos, writeKeyword, node); + emitCaseOrDefaultClauseRest(node, node.statements, pos); + } + function emitCaseOrDefaultClauseRest(parentNode, statements, colonPos) { + var emitAsSingleStatement = statements.length === 1 && + ( + // treat synthesized nodes as located on the same line for emit purposes + ts.nodeIsSynthesized(parentNode) || + ts.nodeIsSynthesized(statements[0]) || + ts.rangeStartPositionsAreOnSameLine(parentNode, statements[0], currentSourceFile)); + var format = 163969 /* CaseOrDefaultClauseStatements */; + if (emitAsSingleStatement) { + writeToken(58 /* ColonToken */, colonPos, writePunctuation, parentNode); + writeSpace(); + format &= ~(1 /* MultiLine */ | 128 /* Indented */); + } + else { + emitTokenWithComment(58 /* ColonToken */, colonPos, writePunctuation, parentNode); + } + emitList(parentNode, statements, format); + } + function emitHeritageClause(node) { + writeSpace(); + writeTokenText(node.token, writeKeyword); + writeSpace(); + emitList(node, node.types, 528 /* HeritageClauseTypes */); + } + function emitCatchClause(node) { + var openParenPos = emitTokenWithComment(79 /* CatchKeyword */, node.pos, writeKeyword, node); + writeSpace(); + if (node.variableDeclaration) { + emitTokenWithComment(20 /* OpenParenToken */, openParenPos, writePunctuation, node); + emit(node.variableDeclaration); + emitTokenWithComment(21 /* CloseParenToken */, node.variableDeclaration.end, writePunctuation, node); + writeSpace(); + } + emit(node.block); + } + // + // Property assignments + // + function emitPropertyAssignment(node) { + emit(node.name); + writePunctuation(":"); + writeSpace(); + // This is to ensure that we emit comment in the following case: + // For example: + // obj = { + // id: /*comment1*/ ()=>void + // } + // "comment1" is not considered to be leading comment for node.initializer + // but rather a trailing comment on the previous node. + var initializer = node.initializer; + if (emitTrailingCommentsOfPosition && (ts.getEmitFlags(initializer) & 512 /* NoLeadingComments */) === 0) { + var commentRange = ts.getCommentRange(initializer); + emitTrailingCommentsOfPosition(commentRange.pos); + } + emitExpression(initializer); + } + function emitShorthandPropertyAssignment(node) { + emit(node.name); + if (node.objectAssignmentInitializer) { + writeSpace(); + writePunctuation("="); + writeSpace(); + emitExpression(node.objectAssignmentInitializer); + } + } + function emitSpreadAssignment(node) { + if (node.expression) { + emitTokenWithComment(25 /* DotDotDotToken */, node.pos, writePunctuation, node); + emitExpression(node.expression); + } + } + // + // Enum + // + function emitEnumMember(node) { + emit(node.name); + emitInitializer(node.initializer, node.name.end, node); + } + // + // JSDoc + // + function emitJSDoc(node) { + write("/**"); + if (node.comment) { + var lines = node.comment.split(/\r\n?|\n/g); + for (var _a = 0, lines_2 = lines; _a < lines_2.length; _a++) { + var line = lines_2[_a]; + writeLine(); + writeSpace(); + writePunctuation("*"); + writeSpace(); + write(line); + } + } + if (node.tags) { + if (node.tags.length === 1 && node.tags[0].kind === 320 /* JSDocTypeTag */ && !node.comment) { + writeSpace(); + emit(node.tags[0]); + } + else { + emitList(node, node.tags, 33 /* JSDocComment */); + } + } + writeSpace(); + write("*/"); + } + function emitJSDocSimpleTypedTag(tag) { + emitJSDocTagName(tag.tagName); + emitJSDocTypeExpression(tag.typeExpression); + emitJSDocComment(tag.comment); + } + function emitJSDocHeritageTag(tag) { + emitJSDocTagName(tag.tagName); + writeSpace(); + writePunctuation("{"); + emit(tag.class); + writePunctuation("}"); + emitJSDocComment(tag.comment); + } + function emitJSDocTemplateTag(tag) { + emitJSDocTagName(tag.tagName); + emitJSDocTypeExpression(tag.constraint); + writeSpace(); + emitList(tag, tag.typeParameters, 528 /* CommaListElements */); + emitJSDocComment(tag.comment); + } + function emitJSDocTypedefTag(tag) { + emitJSDocTagName(tag.tagName); + if (tag.typeExpression) { + if (tag.typeExpression.kind === 294 /* JSDocTypeExpression */) { + emitJSDocTypeExpression(tag.typeExpression); + } + else { + writeSpace(); + writePunctuation("{"); + write("Object"); + if (tag.typeExpression.isArrayType) { + writePunctuation("["); + writePunctuation("]"); + } + writePunctuation("}"); + } + } + if (tag.fullName) { + writeSpace(); + emit(tag.fullName); + } + emitJSDocComment(tag.comment); + if (tag.typeExpression && tag.typeExpression.kind === 304 /* JSDocTypeLiteral */) { + emitJSDocTypeLiteral(tag.typeExpression); + } + } + function emitJSDocCallbackTag(tag) { + emitJSDocTagName(tag.tagName); + if (tag.name) { + writeSpace(); + emit(tag.name); + } + emitJSDocComment(tag.comment); + emitJSDocSignature(tag.typeExpression); + } + function emitJSDocSimpleTag(tag) { + emitJSDocTagName(tag.tagName); + emitJSDocComment(tag.comment); + } + function emitJSDocTypeLiteral(lit) { + emitList(lit, ts.createNodeArray(lit.jsDocPropertyTags), 33 /* JSDocComment */); + } + function emitJSDocSignature(sig) { + if (sig.typeParameters) { + emitList(sig, ts.createNodeArray(sig.typeParameters), 33 /* JSDocComment */); + } + if (sig.parameters) { + emitList(sig, ts.createNodeArray(sig.parameters), 33 /* JSDocComment */); + } + if (sig.type) { + writeLine(); + writeSpace(); + writePunctuation("*"); + writeSpace(); + emit(sig.type); + } + } + function emitJSDocPropertyLikeTag(param) { + emitJSDocTagName(param.tagName); + emitJSDocTypeExpression(param.typeExpression); + writeSpace(); + if (param.isBracketed) { + writePunctuation("["); + } + emit(param.name); + if (param.isBracketed) { + writePunctuation("]"); + } + emitJSDocComment(param.comment); + } + function emitJSDocTagName(tagName) { + writePunctuation("@"); + emit(tagName); + } + function emitJSDocComment(comment) { + if (comment) { + writeSpace(); + write(comment); + } + } + function emitJSDocTypeExpression(typeExpression) { + if (typeExpression) { + writeSpace(); + writePunctuation("{"); + emit(typeExpression.type); + writePunctuation("}"); + } + } + // + // Top-level nodes + // + function emitSourceFile(node) { + writeLine(); + var statements = node.statements; + if (emitBodyWithDetachedComments) { + // Emit detached comment if there are no prologue directives or if the first node is synthesized. + // The synthesized node will have no leading comment so some comments may be missed. + var shouldEmitDetachedComment = statements.length === 0 || + !ts.isPrologueDirective(statements[0]) || + ts.nodeIsSynthesized(statements[0]); + if (shouldEmitDetachedComment) { + emitBodyWithDetachedComments(node, statements, emitSourceFileWorker); + return; + } + } + emitSourceFileWorker(node); + } + function emitSyntheticTripleSlashReferencesIfNeeded(node) { + emitTripleSlashDirectives(!!node.hasNoDefaultLib, node.syntheticFileReferences || [], node.syntheticTypeReferences || [], node.syntheticLibReferences || []); + for (var _a = 0, _b = node.prepends; _a < _b.length; _a++) { + var prepend = _b[_a]; + if (ts.isUnparsedSource(prepend) && prepend.syntheticReferences) { + for (var _c = 0, _d = prepend.syntheticReferences; _c < _d.length; _c++) { + var ref = _d[_c]; + emit(ref); + writeLine(); + } + } + } + } + function emitTripleSlashDirectivesIfNeeded(node) { + if (node.isDeclarationFile) + emitTripleSlashDirectives(node.hasNoDefaultLib, node.referencedFiles, node.typeReferenceDirectives, node.libReferenceDirectives); + } + function emitTripleSlashDirectives(hasNoDefaultLib, files, types, libs) { + if (hasNoDefaultLib) { + var pos = writer.getTextPos(); + writeComment("/// "); + if (bundleFileInfo) + bundleFileInfo.sections.push({ pos: pos, end: writer.getTextPos(), kind: "no-default-lib" /* NoDefaultLib */ }); + writeLine(); + } + if (currentSourceFile && currentSourceFile.moduleName) { + writeComment("/// "); + writeLine(); + } + if (currentSourceFile && currentSourceFile.amdDependencies) { + for (var _a = 0, _b = currentSourceFile.amdDependencies; _a < _b.length; _a++) { + var dep = _b[_a]; + if (dep.name) { + writeComment("/// "); + } + else { + writeComment("/// "); + } + writeLine(); + } + } + for (var _c = 0, files_1 = files; _c < files_1.length; _c++) { + var directive = files_1[_c]; + var pos = writer.getTextPos(); + writeComment("/// "); + if (bundleFileInfo) + bundleFileInfo.sections.push({ pos: pos, end: writer.getTextPos(), kind: "reference" /* Reference */, data: directive.fileName }); + writeLine(); + } + for (var _d = 0, types_22 = types; _d < types_22.length; _d++) { + var directive = types_22[_d]; + var pos = writer.getTextPos(); + writeComment("/// "); + if (bundleFileInfo) + bundleFileInfo.sections.push({ pos: pos, end: writer.getTextPos(), kind: "type" /* Type */, data: directive.fileName }); + writeLine(); + } + for (var _e = 0, libs_1 = libs; _e < libs_1.length; _e++) { + var directive = libs_1[_e]; + var pos = writer.getTextPos(); + writeComment("/// "); + if (bundleFileInfo) + bundleFileInfo.sections.push({ pos: pos, end: writer.getTextPos(), kind: "lib" /* Lib */, data: directive.fileName }); + writeLine(); + } + } + function emitSourceFileWorker(node) { + var statements = node.statements; + pushNameGenerationScope(node); + ts.forEach(node.statements, generateNames); + emitHelpers(node); + var index = ts.findIndex(statements, function (statement) { return !ts.isPrologueDirective(statement); }); + emitTripleSlashDirectivesIfNeeded(node); + emitList(node, statements, 1 /* MultiLine */, index === -1 ? statements.length : index); + popNameGenerationScope(node); + } + // Transformation nodes + function emitPartiallyEmittedExpression(node) { + emitExpression(node.expression); + } + function emitCommaList(node) { + emitExpressionList(node, node.elements, 528 /* CommaListElements */); + } + /** + * Emits any prologue directives at the start of a Statement list, returning the + * number of prologue directives written to the output. + */ + function emitPrologueDirectives(statements, sourceFile, seenPrologueDirectives, recordBundleFileSection) { + var needsToSetSourceFile = !!sourceFile; + for (var i = 0; i < statements.length; i++) { + var statement = statements[i]; + if (ts.isPrologueDirective(statement)) { + var shouldEmitPrologueDirective = seenPrologueDirectives ? !seenPrologueDirectives.has(statement.expression.text) : true; + if (shouldEmitPrologueDirective) { + if (needsToSetSourceFile) { + needsToSetSourceFile = false; + setSourceFile(sourceFile); + } + writeLine(); + var pos = writer.getTextPos(); + emit(statement); + if (recordBundleFileSection && bundleFileInfo) + bundleFileInfo.sections.push({ pos: pos, end: writer.getTextPos(), kind: "prologue" /* Prologue */, data: statement.expression.text }); + if (seenPrologueDirectives) { + seenPrologueDirectives.set(statement.expression.text, true); + } + } + } + else { + // return index of the first non prologue directive + return i; + } + } + return statements.length; + } + function emitUnparsedPrologues(prologues, seenPrologueDirectives) { + for (var _a = 0, prologues_1 = prologues; _a < prologues_1.length; _a++) { + var prologue = prologues_1[_a]; + if (!seenPrologueDirectives.has(prologue.data)) { + writeLine(); + var pos = writer.getTextPos(); + emit(prologue); + if (bundleFileInfo) + bundleFileInfo.sections.push({ pos: pos, end: writer.getTextPos(), kind: "prologue" /* Prologue */, data: prologue.data }); + if (seenPrologueDirectives) { + seenPrologueDirectives.set(prologue.data, true); + } + } + } + } + function emitPrologueDirectivesIfNeeded(sourceFileOrBundle) { + if (ts.isSourceFile(sourceFileOrBundle)) { + emitPrologueDirectives(sourceFileOrBundle.statements, sourceFileOrBundle); + } + else { + var seenPrologueDirectives = ts.createMap(); + for (var _a = 0, _b = sourceFileOrBundle.prepends; _a < _b.length; _a++) { + var prepend = _b[_a]; + emitUnparsedPrologues(prepend.prologues, seenPrologueDirectives); + } + for (var _c = 0, _d = sourceFileOrBundle.sourceFiles; _c < _d.length; _c++) { + var sourceFile = _d[_c]; + emitPrologueDirectives(sourceFile.statements, sourceFile, seenPrologueDirectives, /*recordBundleFileSection*/ true); + } + setSourceFile(undefined); + } + } + function getPrologueDirectivesFromBundledSourceFiles(bundle) { + var seenPrologueDirectives = ts.createMap(); + var prologues; + for (var index = 0; index < bundle.sourceFiles.length; index++) { + var sourceFile = bundle.sourceFiles[index]; + var directives = void 0; + var end = 0; + for (var _a = 0, _b = sourceFile.statements; _a < _b.length; _a++) { + var statement = _b[_a]; + if (!ts.isPrologueDirective(statement)) + break; + if (seenPrologueDirectives.has(statement.expression.text)) + continue; + seenPrologueDirectives.set(statement.expression.text, true); + (directives || (directives = [])).push({ + pos: statement.pos, + end: statement.end, + expression: { + pos: statement.expression.pos, + end: statement.expression.end, + text: statement.expression.text + } + }); + end = end < statement.end ? statement.end : end; + } + if (directives) + (prologues || (prologues = [])).push({ file: index, text: sourceFile.text.substring(0, end), directives: directives }); + } + return prologues; + } + function emitShebangIfNeeded(sourceFileOrBundle) { + if (ts.isSourceFile(sourceFileOrBundle) || ts.isUnparsedSource(sourceFileOrBundle)) { + var shebang = ts.getShebang(sourceFileOrBundle.text); + if (shebang) { + writeComment(shebang); + writeLine(); + return true; + } + } + else { + for (var _a = 0, _b = sourceFileOrBundle.prepends; _a < _b.length; _a++) { + var prepend = _b[_a]; + ts.Debug.assertNode(prepend, ts.isUnparsedSource); + if (emitShebangIfNeeded(prepend)) { + return true; + } + } + for (var _c = 0, _d = sourceFileOrBundle.sourceFiles; _c < _d.length; _c++) { + var sourceFile = _d[_c]; + // Emit only the first encountered shebang + if (emitShebangIfNeeded(sourceFile)) { + return true; + } + } + } + } + // + // Helpers + // + function emitNodeWithWriter(node, writer) { + if (!node) + return; + var savedWrite = write; + write = writer; + emit(node); + write = savedWrite; + } + function emitModifiers(node, modifiers) { + if (modifiers && modifiers.length) { + emitList(node, modifiers, 262656 /* Modifiers */); + writeSpace(); + } + } + function emitTypeAnnotation(node) { + if (node) { + writePunctuation(":"); + writeSpace(); + emit(node); + } + } + function emitInitializer(node, equalCommentStartPos, container) { + if (node) { + writeSpace(); + emitTokenWithComment(62 /* EqualsToken */, equalCommentStartPos, writeOperator, container); + writeSpace(); + emitExpression(node); + } + } + function emitNodeWithPrefix(prefix, prefixWriter, node, emit) { + if (node) { + prefixWriter(prefix); + emit(node); + } + } + function emitWithLeadingSpace(node) { + if (node) { + writeSpace(); + emit(node); + } + } + function emitExpressionWithLeadingSpace(node) { + if (node) { + writeSpace(); + emitExpression(node); + } + } + function emitWithTrailingSpace(node) { + if (node) { + emit(node); + writeSpace(); + } + } + function emitEmbeddedStatement(parent, node) { + if (ts.isBlock(node) || ts.getEmitFlags(parent) & 1 /* SingleLine */) { + writeSpace(); + emit(node); + } + else { + writeLine(); + increaseIndent(); + if (ts.isEmptyStatement(node)) { + pipelineEmit(5 /* EmbeddedStatement */, node); + } + else { + emit(node); + } + decreaseIndent(); + } + } + function emitDecorators(parentNode, decorators) { + emitList(parentNode, decorators, 2146305 /* Decorators */); + } + function emitTypeArguments(parentNode, typeArguments) { + emitList(parentNode, typeArguments, 53776 /* TypeArguments */); + } + function emitTypeParameters(parentNode, typeParameters) { + if (ts.isFunctionLike(parentNode) && parentNode.typeArguments) { // Quick info uses type arguments in place of type parameters on instantiated signatures + return emitTypeArguments(parentNode, parentNode.typeArguments); + } + emitList(parentNode, typeParameters, 53776 /* TypeParameters */); + } + function emitParameters(parentNode, parameters) { + emitList(parentNode, parameters, 2576 /* Parameters */); + } + function canEmitSimpleArrowHead(parentNode, parameters) { + var parameter = ts.singleOrUndefined(parameters); + return parameter + && parameter.pos === parentNode.pos // may not have parsed tokens between parent and parameter + && ts.isArrowFunction(parentNode) // only arrow functions may have simple arrow head + && !parentNode.type // arrow function may not have return type annotation + && !ts.some(parentNode.decorators) // parent may not have decorators + && !ts.some(parentNode.modifiers) // parent may not have modifiers + && !ts.some(parentNode.typeParameters) // parent may not have type parameters + && !ts.some(parameter.decorators) // parameter may not have decorators + && !ts.some(parameter.modifiers) // parameter may not have modifiers + && !parameter.dotDotDotToken // parameter may not be rest + && !parameter.questionToken // parameter may not be optional + && !parameter.type // parameter may not have a type annotation + && !parameter.initializer // parameter may not have an initializer + && ts.isIdentifier(parameter.name); // parameter name must be identifier + } + function emitParametersForArrow(parentNode, parameters) { + if (canEmitSimpleArrowHead(parentNode, parameters)) { + emitList(parentNode, parameters, 2576 /* Parameters */ & ~2048 /* Parenthesis */); + } + else { + emitParameters(parentNode, parameters); + } + } + function emitParametersForIndexSignature(parentNode, parameters) { + emitList(parentNode, parameters, 8848 /* IndexSignatureParameters */); + } + function emitList(parentNode, children, format, start, count) { + emitNodeList(emit, parentNode, children, format, start, count); + } + function emitExpressionList(parentNode, children, format, start, count) { + emitNodeList(emitExpression, parentNode, children, format, start, count); // TODO: GH#18217 + } + function writeDelimiter(format) { + switch (format & 60 /* DelimitersMask */) { + case 0 /* None */: + break; + case 16 /* CommaDelimited */: + writePunctuation(","); + break; + case 4 /* BarDelimited */: + writeSpace(); + writePunctuation("|"); + break; + case 32 /* AsteriskDelimited */: + writeSpace(); + writePunctuation("*"); + writeSpace(); + break; + case 8 /* AmpersandDelimited */: + writeSpace(); + writePunctuation("&"); + break; + } + } + function emitNodeList(emit, parentNode, children, format, start, count) { + if (start === void 0) { start = 0; } + if (count === void 0) { count = children ? children.length - start : 0; } + var isUndefined = children === undefined; + if (isUndefined && format & 16384 /* OptionalIfUndefined */) { + return; + } + var isEmpty = children === undefined || start >= children.length || count === 0; + if (isEmpty && format & 32768 /* OptionalIfEmpty */) { + if (onBeforeEmitNodeArray) { + onBeforeEmitNodeArray(children); + } + if (onAfterEmitNodeArray) { + onAfterEmitNodeArray(children); + } + return; + } + if (format & 15360 /* BracketsMask */) { + writePunctuation(getOpeningBracket(format)); + if (isEmpty && !isUndefined) { + // TODO: GH#18217 + emitTrailingCommentsOfPosition(children.pos, /*prefixSpace*/ true); // Emit comments within empty bracketed lists + } + } + if (onBeforeEmitNodeArray) { + onBeforeEmitNodeArray(children); + } + if (isEmpty) { + // Write a line terminator if the parent node was multi-line + if (format & 1 /* MultiLine */ && !(preserveSourceNewlines && ts.rangeIsOnSingleLine(parentNode, currentSourceFile))) { + writeLine(); + } + else if (format & 256 /* SpaceBetweenBraces */ && !(format & 524288 /* NoSpaceIfEmpty */)) { + writeSpace(); + } + } + else { + // Write the opening line terminator or leading whitespace. + var mayEmitInterveningComments = (format & 262144 /* NoInterveningComments */) === 0; + var shouldEmitInterveningComments = mayEmitInterveningComments; + var leadingLineTerminatorCount = getLeadingLineTerminatorCount(parentNode, children, format); // TODO: GH#18217 + if (leadingLineTerminatorCount) { + writeLine(leadingLineTerminatorCount); + shouldEmitInterveningComments = false; + } + else if (format & 256 /* SpaceBetweenBraces */) { + writeSpace(); + } + // Increase the indent, if requested. + if (format & 128 /* Indented */) { + increaseIndent(); + } + // Emit each child. + var previousSibling = void 0; + var previousSourceFileTextKind = void 0; + var shouldDecreaseIndentAfterEmit = false; + for (var i = 0; i < count; i++) { + var child = children[start + i]; + // Write the delimiter if this is not the first node. + if (format & 32 /* AsteriskDelimited */) { + // always write JSDoc in the format "\n *" + writeLine(); + writeDelimiter(format); + } + else if (previousSibling) { + // i.e + // function commentedParameters( + // /* Parameter a */ + // a + // /* End of parameter a */ -> this comment isn't considered to be trailing comment of parameter "a" due to newline + // , + if (format & 60 /* DelimitersMask */ && previousSibling.end !== parentNode.end) { + emitLeadingCommentsOfPosition(previousSibling.end); + } + writeDelimiter(format); + recordBundleFileInternalSectionEnd(previousSourceFileTextKind); + // Write either a line terminator or whitespace to separate the elements. + var separatingLineTerminatorCount = getSeparatingLineTerminatorCount(previousSibling, child, format); + if (separatingLineTerminatorCount > 0) { + // If a synthesized node in a single-line list starts on a new + // line, we should increase the indent. + if ((format & (3 /* LinesMask */ | 128 /* Indented */)) === 0 /* SingleLine */) { + increaseIndent(); + shouldDecreaseIndentAfterEmit = true; + } + writeLine(separatingLineTerminatorCount); + shouldEmitInterveningComments = false; + } + else if (previousSibling && format & 512 /* SpaceBetweenSiblings */) { + writeSpace(); + } + } + // Emit this child. + previousSourceFileTextKind = recordBundleFileInternalSectionStart(child); + if (shouldEmitInterveningComments) { + if (emitTrailingCommentsOfPosition) { + var commentRange = ts.getCommentRange(child); + emitTrailingCommentsOfPosition(commentRange.pos); + } + } + else { + shouldEmitInterveningComments = mayEmitInterveningComments; + } + emit(child); + if (shouldDecreaseIndentAfterEmit) { + decreaseIndent(); + shouldDecreaseIndentAfterEmit = false; + } + previousSibling = child; + } + // Write a trailing comma, if requested. + var hasTrailingComma = (format & 64 /* AllowTrailingComma */) && children.hasTrailingComma; + if (format & 16 /* CommaDelimited */ && hasTrailingComma) { + writePunctuation(","); + } + // Emit any trailing comment of the last element in the list + // i.e + // var array = [... + // 2 + // /* end of element 2 */ + // ]; + if (previousSibling && format & 60 /* DelimitersMask */ && previousSibling.end !== parentNode.end && !(ts.getEmitFlags(previousSibling) & 1024 /* NoTrailingComments */)) { + emitLeadingCommentsOfPosition(previousSibling.end); + } + // Decrease the indent, if requested. + if (format & 128 /* Indented */) { + decreaseIndent(); + } + recordBundleFileInternalSectionEnd(previousSourceFileTextKind); + // Write the closing line terminator or closing whitespace. + var closingLineTerminatorCount = getClosingLineTerminatorCount(parentNode, children, format); + if (closingLineTerminatorCount) { + writeLine(closingLineTerminatorCount); + } + else if (format & (2097152 /* SpaceAfterList */ | 256 /* SpaceBetweenBraces */)) { + writeSpace(); + } + } + if (onAfterEmitNodeArray) { + onAfterEmitNodeArray(children); + } + if (format & 15360 /* BracketsMask */) { + if (isEmpty && !isUndefined) { + // TODO: GH#18217 + emitLeadingCommentsOfPosition(children.end); // Emit leading comments within empty lists + } + writePunctuation(getClosingBracket(format)); + } + } + // Writers + function writeLiteral(s) { + writer.writeLiteral(s); + } + function writeStringLiteral(s) { + writer.writeStringLiteral(s); + } + function writeBase(s) { + writer.write(s); + } + function writeSymbol(s, sym) { + writer.writeSymbol(s, sym); + } + function writePunctuation(s) { + writer.writePunctuation(s); + } + function writeTrailingSemicolon() { + writer.writeTrailingSemicolon(";"); + } + function writeKeyword(s) { + writer.writeKeyword(s); + } + function writeOperator(s) { + writer.writeOperator(s); + } + function writeParameter(s) { + writer.writeParameter(s); + } + function writeComment(s) { + writer.writeComment(s); + } + function writeSpace() { + writer.writeSpace(" "); + } + function writeProperty(s) { + writer.writeProperty(s); + } + function writeLine(count) { + if (count === void 0) { count = 1; } + for (var i = 0; i < count; i++) { + writer.writeLine(i > 0); + } + } + function increaseIndent() { + writer.increaseIndent(); + } + function decreaseIndent() { + writer.decreaseIndent(); + } + function writeToken(token, pos, writer, contextNode) { + return !sourceMapsDisabled + ? emitTokenWithSourceMap(contextNode, token, writer, pos, writeTokenText) + : writeTokenText(token, writer, pos); + } + function writeTokenNode(node, writer) { + if (onBeforeEmitToken) { + onBeforeEmitToken(node); + } + writer(ts.tokenToString(node.kind)); + if (onAfterEmitToken) { + onAfterEmitToken(node); + } + } + function writeTokenText(token, writer, pos) { + var tokenString = ts.tokenToString(token); + writer(tokenString); + return pos < 0 ? pos : pos + tokenString.length; + } + function writeLineOrSpace(node) { + if (ts.getEmitFlags(node) & 1 /* SingleLine */) { + writeSpace(); + } + else { + writeLine(); + } + } + function writeLines(text) { + var lines = text.split(/\r\n?|\n/g); + var indentation = ts.guessIndentation(lines); + for (var _a = 0, lines_3 = lines; _a < lines_3.length; _a++) { + var lineText = lines_3[_a]; + var line = indentation ? lineText.slice(indentation) : lineText; + if (line.length) { + writeLine(); + write(line); + } + } + } + function writeLinesAndIndent(lineCount, writeSpaceIfNotIndenting) { + if (lineCount) { + increaseIndent(); + writeLine(lineCount); + } + else if (writeSpaceIfNotIndenting) { + writeSpace(); + } + } + // Helper function to decrease the indent if we previously indented. Allows multiple + // previous indent values to be considered at a time. This also allows caller to just + // call this once, passing in all their appropriate indent values, instead of needing + // to call this helper function multiple times. + function decreaseIndentIf(value1, value2) { + if (value1) { + decreaseIndent(); + } + if (value2) { + decreaseIndent(); + } + } + function getLeadingLineTerminatorCount(parentNode, children, format) { + if (format & 2 /* PreserveLines */ || preserveSourceNewlines) { + if (format & 65536 /* PreferNewLine */) { + return 1; + } + var firstChild_1 = children[0]; + if (firstChild_1 === undefined) { + return ts.rangeIsOnSingleLine(parentNode, currentSourceFile) ? 0 : 1; + } + if (firstChild_1.kind === 11 /* JsxText */) { + // JsxText will be written with its leading whitespace, so don't add more manually. + return 0; + } + if (!ts.positionIsSynthesized(parentNode.pos) && !ts.nodeIsSynthesized(firstChild_1) && (!firstChild_1.parent || firstChild_1.parent === parentNode)) { + if (preserveSourceNewlines) { + return getEffectiveLines(function (includeComments) { return ts.getLinesBetweenPositionAndPrecedingNonWhitespaceCharacter(firstChild_1.pos, parentNode.pos, currentSourceFile, includeComments); }); + } + return ts.rangeStartPositionsAreOnSameLine(parentNode, firstChild_1, currentSourceFile) ? 0 : 1; + } + if (synthesizedNodeStartsOnNewLine(firstChild_1, format)) { + return 1; + } + } + return format & 1 /* MultiLine */ ? 1 : 0; + } + function getSeparatingLineTerminatorCount(previousNode, nextNode, format) { + if (format & 2 /* PreserveLines */ || preserveSourceNewlines) { + if (previousNode === undefined || nextNode === undefined) { + return 0; + } + if (nextNode.kind === 11 /* JsxText */) { + // JsxText will be written with its leading whitespace, so don't add more manually. + return 0; + } + else if (!ts.nodeIsSynthesized(previousNode) && !ts.nodeIsSynthesized(nextNode) && previousNode.parent === nextNode.parent) { + if (preserveSourceNewlines) { + return getEffectiveLines(function (includeComments) { return ts.getLinesBetweenRangeEndAndRangeStart(previousNode, nextNode, currentSourceFile, includeComments); }); + } + return ts.rangeEndIsOnSameLineAsRangeStart(previousNode, nextNode, currentSourceFile) ? 0 : 1; + } + else if (synthesizedNodeStartsOnNewLine(previousNode, format) || synthesizedNodeStartsOnNewLine(nextNode, format)) { + return 1; + } + } + else if (ts.getStartsOnNewLine(nextNode)) { + return 1; + } + return format & 1 /* MultiLine */ ? 1 : 0; + } + function getClosingLineTerminatorCount(parentNode, children, format) { + if (format & 2 /* PreserveLines */ || preserveSourceNewlines) { + if (format & 65536 /* PreferNewLine */) { + return 1; + } + var lastChild_1 = ts.lastOrUndefined(children); + if (lastChild_1 === undefined) { + return ts.rangeIsOnSingleLine(parentNode, currentSourceFile) ? 0 : 1; + } + if (!ts.positionIsSynthesized(parentNode.pos) && !ts.nodeIsSynthesized(lastChild_1) && (!lastChild_1.parent || lastChild_1.parent === parentNode)) { + if (preserveSourceNewlines) { + return getEffectiveLines(function (includeComments) { return ts.getLinesBetweenPositionAndNextNonWhitespaceCharacter(lastChild_1.end, parentNode.end, currentSourceFile, includeComments); }); + } + return ts.rangeEndPositionsAreOnSameLine(parentNode, lastChild_1, currentSourceFile) ? 0 : 1; + } + if (synthesizedNodeStartsOnNewLine(lastChild_1, format)) { + return 1; + } + } + if (format & 1 /* MultiLine */ && !(format & 131072 /* NoTrailingNewLine */)) { + return 1; + } + return 0; + } + function getEffectiveLines(getLineDifference) { + // If 'preserveSourceNewlines' is disabled, we should never call this function + // because it could be more expensive than alternative approximations. + ts.Debug.assert(!!preserveSourceNewlines); + // We start by measuring the line difference from a position to its adjacent comments, + // so that this is counted as a one-line difference, not two: + // + // node1; + // // NODE2 COMMENT + // node2; + var lines = getLineDifference(/*includeComments*/ true); + if (lines === 0) { + // However, if the line difference considering comments was 0, we might have this: + // + // node1; // NODE2 COMMENT + // node2; + // + // in which case we should be ignoring node2's comment, so this too is counted as + // a one-line difference, not zero. + return getLineDifference(/*includeComments*/ false); + } + return lines; + } + function writeLineSeparatorsAndIndentBefore(node, parent) { + var leadingNewlines = preserveSourceNewlines && getLeadingLineTerminatorCount(parent, [node], 0 /* None */); + if (leadingNewlines) { + writeLinesAndIndent(leadingNewlines, /*writeLinesIfNotIndenting*/ false); + } + return !!leadingNewlines; + } + function writeLineSeparatorsAfter(node, parent) { + var trailingNewlines = preserveSourceNewlines && getClosingLineTerminatorCount(parent, [node], 0 /* None */); + if (trailingNewlines) { + writeLine(trailingNewlines); + } + } + function synthesizedNodeStartsOnNewLine(node, format) { + if (ts.nodeIsSynthesized(node)) { + var startsOnNewLine = ts.getStartsOnNewLine(node); + if (startsOnNewLine === undefined) { + return (format & 65536 /* PreferNewLine */) !== 0; + } + return startsOnNewLine; + } + return (format & 65536 /* PreferNewLine */) !== 0; + } + function getLinesBetweenNodes(parent, node1, node2) { + if (ts.getEmitFlags(parent) & 131072 /* NoIndentation */) { + return 0; + } + parent = skipSynthesizedParentheses(parent); + node1 = skipSynthesizedParentheses(node1); + node2 = skipSynthesizedParentheses(node2); + // Always use a newline for synthesized code if the synthesizer desires it. + if (ts.getStartsOnNewLine(node2)) { + return 1; + } + if (!ts.nodeIsSynthesized(parent) && !ts.nodeIsSynthesized(node1) && !ts.nodeIsSynthesized(node2)) { + if (preserveSourceNewlines) { + return getEffectiveLines(function (includeComments) { return ts.getLinesBetweenRangeEndAndRangeStart(node1, node2, currentSourceFile, includeComments); }); + } + return ts.rangeEndIsOnSameLineAsRangeStart(node1, node2, currentSourceFile) ? 0 : 1; + } + return 0; + } + function isEmptyBlock(block) { + return block.statements.length === 0 + && ts.rangeEndIsOnSameLineAsRangeStart(block, block, currentSourceFile); + } + function skipSynthesizedParentheses(node) { + while (node.kind === 200 /* ParenthesizedExpression */ && ts.nodeIsSynthesized(node)) { + node = node.expression; + } + return node; + } + function getTextOfNode(node, includeTrivia) { + if (ts.isGeneratedIdentifier(node)) { + return generateName(node); + } + else if ((ts.isIdentifier(node) || ts.isPrivateIdentifier(node)) && (ts.nodeIsSynthesized(node) || !node.parent || !currentSourceFile || (node.parent && currentSourceFile && ts.getSourceFileOfNode(node) !== ts.getOriginalNode(currentSourceFile)))) { + return ts.idText(node); + } + else if (node.kind === 10 /* StringLiteral */ && node.textSourceNode) { + return getTextOfNode(node.textSourceNode, includeTrivia); + } + else if (ts.isLiteralExpression(node) && (ts.nodeIsSynthesized(node) || !node.parent)) { + return node.text; + } + return ts.getSourceTextOfNodeFromSourceFile(currentSourceFile, node, includeTrivia); + } + function getLiteralTextOfNode(node, neverAsciiEscape, jsxAttributeEscape) { + if (node.kind === 10 /* StringLiteral */ && node.textSourceNode) { + var textSourceNode = node.textSourceNode; + if (ts.isIdentifier(textSourceNode)) { + return jsxAttributeEscape ? "\"" + ts.escapeJsxAttributeString(getTextOfNode(textSourceNode)) + "\"" : + neverAsciiEscape || (ts.getEmitFlags(node) & 16777216 /* NoAsciiEscaping */) ? "\"" + ts.escapeString(getTextOfNode(textSourceNode)) + "\"" : + "\"" + ts.escapeNonAsciiString(getTextOfNode(textSourceNode)) + "\""; + } + else { + return getLiteralTextOfNode(textSourceNode, neverAsciiEscape, jsxAttributeEscape); + } + } + return ts.getLiteralText(node, currentSourceFile, neverAsciiEscape, jsxAttributeEscape); + } + /** + * Push a new name generation scope. + */ + function pushNameGenerationScope(node) { + if (node && ts.getEmitFlags(node) & 524288 /* ReuseTempVariableScope */) { + return; + } + tempFlagsStack.push(tempFlags); + tempFlags = 0; + reservedNamesStack.push(reservedNames); + } + /** + * Pop the current name generation scope. + */ + function popNameGenerationScope(node) { + if (node && ts.getEmitFlags(node) & 524288 /* ReuseTempVariableScope */) { + return; + } + tempFlags = tempFlagsStack.pop(); + reservedNames = reservedNamesStack.pop(); + } + function reserveNameInNestedScopes(name) { + if (!reservedNames || reservedNames === ts.lastOrUndefined(reservedNamesStack)) { + reservedNames = ts.createMap(); + } + reservedNames.set(name, true); + } + function generateNames(node) { + if (!node) + return; + switch (node.kind) { + case 223 /* Block */: + ts.forEach(node.statements, generateNames); + break; + case 238 /* LabeledStatement */: + case 236 /* WithStatement */: + case 228 /* DoStatement */: + case 229 /* WhileStatement */: + generateNames(node.statement); + break; + case 227 /* IfStatement */: + generateNames(node.thenStatement); + generateNames(node.elseStatement); + break; + case 230 /* ForStatement */: + case 232 /* ForOfStatement */: + case 231 /* ForInStatement */: + generateNames(node.initializer); + generateNames(node.statement); + break; + case 237 /* SwitchStatement */: + generateNames(node.caseBlock); + break; + case 251 /* CaseBlock */: + ts.forEach(node.clauses, generateNames); + break; + case 277 /* CaseClause */: + case 278 /* DefaultClause */: + ts.forEach(node.statements, generateNames); + break; + case 240 /* TryStatement */: + generateNames(node.tryBlock); + generateNames(node.catchClause); + generateNames(node.finallyBlock); + break; + case 280 /* CatchClause */: + generateNames(node.variableDeclaration); + generateNames(node.block); + break; + case 225 /* VariableStatement */: + generateNames(node.declarationList); + break; + case 243 /* VariableDeclarationList */: + ts.forEach(node.declarations, generateNames); + break; + case 242 /* VariableDeclaration */: + case 156 /* Parameter */: + case 191 /* BindingElement */: + case 245 /* ClassDeclaration */: + generateNameIfNeeded(node.name); + break; + case 244 /* FunctionDeclaration */: + generateNameIfNeeded(node.name); + if (ts.getEmitFlags(node) & 524288 /* ReuseTempVariableScope */) { + ts.forEach(node.parameters, generateNames); + generateNames(node.body); + } + break; + case 189 /* ObjectBindingPattern */: + case 190 /* ArrayBindingPattern */: + ts.forEach(node.elements, generateNames); + break; + case 254 /* ImportDeclaration */: + generateNames(node.importClause); + break; + case 255 /* ImportClause */: + generateNameIfNeeded(node.name); + generateNames(node.namedBindings); + break; + case 256 /* NamespaceImport */: + generateNameIfNeeded(node.name); + break; + case 262 /* NamespaceExport */: + generateNameIfNeeded(node.name); + break; + case 257 /* NamedImports */: + ts.forEach(node.elements, generateNames); + break; + case 258 /* ImportSpecifier */: + generateNameIfNeeded(node.propertyName || node.name); + break; + } + } + function generateMemberNames(node) { + if (!node) + return; + switch (node.kind) { + case 281 /* PropertyAssignment */: + case 282 /* ShorthandPropertyAssignment */: + case 159 /* PropertyDeclaration */: + case 161 /* MethodDeclaration */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + generateNameIfNeeded(node.name); + break; + } + } + function generateNameIfNeeded(name) { + if (name) { + if (ts.isGeneratedIdentifier(name)) { + generateName(name); + } + else if (ts.isBindingPattern(name)) { + generateNames(name); + } + } + } + /** + * Generate the text for a generated identifier. + */ + function generateName(name) { + if ((name.autoGenerateFlags & 7 /* KindMask */) === 4 /* Node */) { + // Node names generate unique names based on their original node + // and are cached based on that node's id. + return generateNameCached(getNodeForGeneratedName(name), name.autoGenerateFlags); + } + else { + // Auto, Loop, and Unique names are cached based on their unique + // autoGenerateId. + var autoGenerateId = name.autoGenerateId; + return autoGeneratedIdToGeneratedName[autoGenerateId] || (autoGeneratedIdToGeneratedName[autoGenerateId] = makeName(name)); + } + } + function generateNameCached(node, flags) { + var nodeId = ts.getNodeId(node); + return nodeIdToGeneratedName[nodeId] || (nodeIdToGeneratedName[nodeId] = generateNameForNode(node, flags)); + } + /** + * Returns a value indicating whether a name is unique globally, within the current file, + * or within the NameGenerator. + */ + function isUniqueName(name) { + return isFileLevelUniqueName(name) + && !generatedNames.has(name) + && !(reservedNames && reservedNames.has(name)); + } + /** + * Returns a value indicating whether a name is unique globally or within the current file. + */ + function isFileLevelUniqueName(name) { + return currentSourceFile ? ts.isFileLevelUniqueName(currentSourceFile, name, hasGlobalName) : true; + } + /** + * Returns a value indicating whether a name is unique within a container. + */ + function isUniqueLocalName(name, container) { + for (var node = container; ts.isNodeDescendantOf(node, container); node = node.nextContainer) { + if (node.locals) { + var local = node.locals.get(ts.escapeLeadingUnderscores(name)); + // We conservatively include alias symbols to cover cases where they're emitted as locals + if (local && local.flags & (111551 /* Value */ | 1048576 /* ExportValue */ | 2097152 /* Alias */)) { + return false; + } + } + } + return true; + } + /** + * Return the next available name in the pattern _a ... _z, _0, _1, ... + * TempFlags._i or TempFlags._n may be used to express a preference for that dedicated name. + * Note that names generated by makeTempVariableName and makeUniqueName will never conflict. + */ + function makeTempVariableName(flags, reservedInNestedScopes) { + if (flags && !(tempFlags & flags)) { + var name = flags === 268435456 /* _i */ ? "_i" : "_n"; + if (isUniqueName(name)) { + tempFlags |= flags; + if (reservedInNestedScopes) { + reserveNameInNestedScopes(name); + } + return name; + } + } + while (true) { + var count = tempFlags & 268435455 /* CountMask */; + tempFlags++; + // Skip over 'i' and 'n' + if (count !== 8 && count !== 13) { + var name = count < 26 + ? "_" + String.fromCharCode(97 /* a */ + count) + : "_" + (count - 26); + if (isUniqueName(name)) { + if (reservedInNestedScopes) { + reserveNameInNestedScopes(name); + } + return name; + } + } + } + } + /** + * Generate a name that is unique within the current file and doesn't conflict with any names + * in global scope. The name is formed by adding an '_n' suffix to the specified base name, + * where n is a positive integer. Note that names generated by makeTempVariableName and + * makeUniqueName are guaranteed to never conflict. + * If `optimistic` is set, the first instance will use 'baseName' verbatim instead of 'baseName_1' + */ + function makeUniqueName(baseName, checkFn, optimistic, scoped) { + if (checkFn === void 0) { checkFn = isUniqueName; } + if (optimistic) { + if (checkFn(baseName)) { + if (scoped) { + reserveNameInNestedScopes(baseName); + } + else { + generatedNames.set(baseName, true); + } + return baseName; + } + } + // Find the first unique 'name_n', where n is a positive number + if (baseName.charCodeAt(baseName.length - 1) !== 95 /* _ */) { + baseName += "_"; + } + var i = 1; + while (true) { + var generatedName = baseName + i; + if (checkFn(generatedName)) { + if (scoped) { + reserveNameInNestedScopes(generatedName); + } + else { + generatedNames.set(generatedName, true); + } + return generatedName; + } + i++; + } + } + function makeFileLevelOptimisticUniqueName(name) { + return makeUniqueName(name, isFileLevelUniqueName, /*optimistic*/ true); + } + /** + * Generates a unique name for a ModuleDeclaration or EnumDeclaration. + */ + function generateNameForModuleOrEnum(node) { + var name = getTextOfNode(node.name); + // Use module/enum name itself if it is unique, otherwise make a unique variation + return isUniqueLocalName(name, node) ? name : makeUniqueName(name); + } + /** + * Generates a unique name for an ImportDeclaration or ExportDeclaration. + */ + function generateNameForImportOrExportDeclaration(node) { + var expr = ts.getExternalModuleName(node); // TODO: GH#18217 + var baseName = ts.isStringLiteral(expr) ? + ts.makeIdentifierFromModuleName(expr.text) : "module"; + return makeUniqueName(baseName); + } + /** + * Generates a unique name for a default export. + */ + function generateNameForExportDefault() { + return makeUniqueName("default"); + } + /** + * Generates a unique name for a class expression. + */ + function generateNameForClassExpression() { + return makeUniqueName("class"); + } + function generateNameForMethodOrAccessor(node) { + if (ts.isIdentifier(node.name)) { + return generateNameCached(node.name); + } + return makeTempVariableName(0 /* Auto */); + } + /** + * Generates a unique name from a node. + */ + function generateNameForNode(node, flags) { + switch (node.kind) { + case 75 /* Identifier */: + return makeUniqueName(getTextOfNode(node), isUniqueName, !!(flags & 16 /* Optimistic */), !!(flags & 8 /* ReservedInNestedScopes */)); + case 249 /* ModuleDeclaration */: + case 248 /* EnumDeclaration */: + return generateNameForModuleOrEnum(node); + case 254 /* ImportDeclaration */: + case 260 /* ExportDeclaration */: + return generateNameForImportOrExportDeclaration(node); + case 244 /* FunctionDeclaration */: + case 245 /* ClassDeclaration */: + case 259 /* ExportAssignment */: + return generateNameForExportDefault(); + case 214 /* ClassExpression */: + return generateNameForClassExpression(); + case 161 /* MethodDeclaration */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + return generateNameForMethodOrAccessor(node); + case 154 /* ComputedPropertyName */: + return makeTempVariableName(0 /* Auto */, /*reserveInNestedScopes*/ true); + default: + return makeTempVariableName(0 /* Auto */); + } + } + /** + * Generates a unique identifier for a node. + */ + function makeName(name) { + switch (name.autoGenerateFlags & 7 /* KindMask */) { + case 1 /* Auto */: + return makeTempVariableName(0 /* Auto */, !!(name.autoGenerateFlags & 8 /* ReservedInNestedScopes */)); + case 2 /* Loop */: + return makeTempVariableName(268435456 /* _i */, !!(name.autoGenerateFlags & 8 /* ReservedInNestedScopes */)); + case 3 /* Unique */: + return makeUniqueName(ts.idText(name), (name.autoGenerateFlags & 32 /* FileLevel */) ? isFileLevelUniqueName : isUniqueName, !!(name.autoGenerateFlags & 16 /* Optimistic */), !!(name.autoGenerateFlags & 8 /* ReservedInNestedScopes */)); + } + return ts.Debug.fail("Unsupported GeneratedIdentifierKind."); + } + /** + * Gets the node from which a name should be generated. + */ + function getNodeForGeneratedName(name) { + var autoGenerateId = name.autoGenerateId; + var node = name; + var original = node.original; + while (original) { + node = original; + // if "node" is a different generated name (having a different + // "autoGenerateId"), use it and stop traversing. + if (ts.isIdentifier(node) + && !!(node.autoGenerateFlags & 4 /* Node */) + && node.autoGenerateId !== autoGenerateId) { + break; + } + original = node.original; + } + // otherwise, return the original node for the source; + return node; + } + // Comments + function pipelineEmitWithComments(hint, node) { + ts.Debug.assert(lastNode === node || lastSubstitution === node); + enterComment(); + hasWrittenComment = false; + var emitFlags = ts.getEmitFlags(node); + var _a = ts.getCommentRange(node), pos = _a.pos, end = _a.end; + var isEmittedNode = node.kind !== 325 /* NotEmittedStatement */; + // We have to explicitly check that the node is JsxText because if the compilerOptions.jsx is "preserve" we will not do any transformation. + // It is expensive to walk entire tree just to set one kind of node to have no comments. + var skipLeadingComments = pos < 0 || (emitFlags & 512 /* NoLeadingComments */) !== 0 || node.kind === 11 /* JsxText */; + var skipTrailingComments = end < 0 || (emitFlags & 1024 /* NoTrailingComments */) !== 0 || node.kind === 11 /* JsxText */; + // Save current container state on the stack. + var savedContainerPos = containerPos; + var savedContainerEnd = containerEnd; + var savedDeclarationListContainerEnd = declarationListContainerEnd; + if ((pos > 0 || end > 0) && pos !== end) { + // Emit leading comments if the position is not synthesized and the node + // has not opted out from emitting leading comments. + if (!skipLeadingComments) { + emitLeadingComments(pos, isEmittedNode); + } + if (!skipLeadingComments || (pos >= 0 && (emitFlags & 512 /* NoLeadingComments */) !== 0)) { + // Advance the container position if comments get emitted or if they've been disabled explicitly using NoLeadingComments. + containerPos = pos; + } + if (!skipTrailingComments || (end >= 0 && (emitFlags & 1024 /* NoTrailingComments */) !== 0)) { + // As above. + containerEnd = end; + // To avoid invalid comment emit in a down-level binding pattern, we + // keep track of the last declaration list container's end + if (node.kind === 243 /* VariableDeclarationList */) { + declarationListContainerEnd = end; + } + } + } + ts.forEach(ts.getSyntheticLeadingComments(node), emitLeadingSynthesizedComment); + exitComment(); + var pipelinePhase = getNextPipelinePhase(2 /* Comments */, hint, node); + if (emitFlags & 2048 /* NoNestedComments */) { + commentsDisabled = true; + pipelinePhase(hint, node); + commentsDisabled = false; + } + else { + pipelinePhase(hint, node); + } + enterComment(); + ts.forEach(ts.getSyntheticTrailingComments(node), emitTrailingSynthesizedComment); + if ((pos > 0 || end > 0) && pos !== end) { + // Restore previous container state. + containerPos = savedContainerPos; + containerEnd = savedContainerEnd; + declarationListContainerEnd = savedDeclarationListContainerEnd; + // Emit trailing comments if the position is not synthesized and the node + // has not opted out from emitting leading comments and is an emitted node. + if (!skipTrailingComments && isEmittedNode) { + emitTrailingComments(end); + } + } + exitComment(); + ts.Debug.assert(lastNode === node || lastSubstitution === node); + } + function emitLeadingSynthesizedComment(comment) { + if (comment.kind === 2 /* SingleLineCommentTrivia */) { + writer.writeLine(); + } + writeSynthesizedComment(comment); + if (comment.hasTrailingNewLine || comment.kind === 2 /* SingleLineCommentTrivia */) { + writer.writeLine(); + } + else { + writer.writeSpace(" "); + } + } + function emitTrailingSynthesizedComment(comment) { + if (!writer.isAtStartOfLine()) { + writer.writeSpace(" "); + } + writeSynthesizedComment(comment); + if (comment.hasTrailingNewLine) { + writer.writeLine(); + } + } + function writeSynthesizedComment(comment) { + var text = formatSynthesizedComment(comment); + var lineMap = comment.kind === 3 /* MultiLineCommentTrivia */ ? ts.computeLineStarts(text) : undefined; + ts.writeCommentRange(text, lineMap, writer, 0, text.length, newLine); + } + function formatSynthesizedComment(comment) { + return comment.kind === 3 /* MultiLineCommentTrivia */ + ? "/*" + comment.text + "*/" + : "//" + comment.text; + } + function emitBodyWithDetachedComments(node, detachedRange, emitCallback) { + enterComment(); + var pos = detachedRange.pos, end = detachedRange.end; + var emitFlags = ts.getEmitFlags(node); + var skipLeadingComments = pos < 0 || (emitFlags & 512 /* NoLeadingComments */) !== 0; + var skipTrailingComments = commentsDisabled || end < 0 || (emitFlags & 1024 /* NoTrailingComments */) !== 0; + if (!skipLeadingComments) { + emitDetachedCommentsAndUpdateCommentsInfo(detachedRange); + } + exitComment(); + if (emitFlags & 2048 /* NoNestedComments */ && !commentsDisabled) { + commentsDisabled = true; + emitCallback(node); + commentsDisabled = false; + } + else { + emitCallback(node); + } + enterComment(); + if (!skipTrailingComments) { + emitLeadingComments(detachedRange.end, /*isEmittedNode*/ true); + if (hasWrittenComment && !writer.isAtStartOfLine()) { + writer.writeLine(); + } + } + exitComment(); + } + function emitLeadingComments(pos, isEmittedNode) { + hasWrittenComment = false; + if (isEmittedNode) { + forEachLeadingCommentToEmit(pos, emitLeadingComment); + } + else if (pos === 0) { + // If the node will not be emitted in JS, remove all the comments(normal, pinned and ///) associated with the node, + // unless it is a triple slash comment at the top of the file. + // For Example: + // /// + // declare var x; + // /// + // interface F {} + // The first /// will NOT be removed while the second one will be removed even though both node will not be emitted + forEachLeadingCommentToEmit(pos, emitTripleSlashLeadingComment); + } + } + function emitTripleSlashLeadingComment(commentPos, commentEnd, kind, hasTrailingNewLine, rangePos) { + if (isTripleSlashComment(commentPos, commentEnd)) { + emitLeadingComment(commentPos, commentEnd, kind, hasTrailingNewLine, rangePos); + } + } + function shouldWriteComment(text, pos) { + if (printerOptions.onlyPrintJsDocStyle) { + return (ts.isJSDocLikeText(text, pos) || ts.isPinnedComment(text, pos)); + } + return true; + } + function emitLeadingComment(commentPos, commentEnd, kind, hasTrailingNewLine, rangePos) { + if (!shouldWriteComment(currentSourceFile.text, commentPos)) + return; + if (!hasWrittenComment) { + ts.emitNewLineBeforeLeadingCommentOfPosition(getCurrentLineMap(), writer, rangePos, commentPos); + hasWrittenComment = true; + } + // Leading comments are emitted at /*leading comment1 */space/*leading comment*/space + emitPos(commentPos); + ts.writeCommentRange(currentSourceFile.text, getCurrentLineMap(), writer, commentPos, commentEnd, newLine); + emitPos(commentEnd); + if (hasTrailingNewLine) { + writer.writeLine(); + } + else if (kind === 3 /* MultiLineCommentTrivia */) { + writer.writeSpace(" "); + } + } + function emitLeadingCommentsOfPosition(pos) { + if (commentsDisabled || pos === -1) { + return; + } + emitLeadingComments(pos, /*isEmittedNode*/ true); + } + function emitTrailingComments(pos) { + forEachTrailingCommentToEmit(pos, emitTrailingComment); + } + function emitTrailingComment(commentPos, commentEnd, _kind, hasTrailingNewLine) { + if (!shouldWriteComment(currentSourceFile.text, commentPos)) + return; + // trailing comments are emitted at space/*trailing comment1 */space/*trailing comment2*/ + if (!writer.isAtStartOfLine()) { + writer.writeSpace(" "); + } + emitPos(commentPos); + ts.writeCommentRange(currentSourceFile.text, getCurrentLineMap(), writer, commentPos, commentEnd, newLine); + emitPos(commentEnd); + if (hasTrailingNewLine) { + writer.writeLine(); + } + } + function emitTrailingCommentsOfPosition(pos, prefixSpace) { + if (commentsDisabled) { + return; + } + enterComment(); + forEachTrailingCommentToEmit(pos, prefixSpace ? emitTrailingComment : emitTrailingCommentOfPosition); + exitComment(); + } + function emitTrailingCommentOfPosition(commentPos, commentEnd, _kind, hasTrailingNewLine) { + // trailing comments of a position are emitted at /*trailing comment1 */space/*trailing comment*/space + emitPos(commentPos); + ts.writeCommentRange(currentSourceFile.text, getCurrentLineMap(), writer, commentPos, commentEnd, newLine); + emitPos(commentEnd); + if (hasTrailingNewLine) { + writer.writeLine(); + } + else { + writer.writeSpace(" "); + } + } + function forEachLeadingCommentToEmit(pos, cb) { + // Emit the leading comments only if the container's pos doesn't match because the container should take care of emitting these comments + if (currentSourceFile && (containerPos === -1 || pos !== containerPos)) { + if (hasDetachedComments(pos)) { + forEachLeadingCommentWithoutDetachedComments(cb); + } + else { + ts.forEachLeadingCommentRange(currentSourceFile.text, pos, cb, /*state*/ pos); + } + } + } + function forEachTrailingCommentToEmit(end, cb) { + // Emit the trailing comments only if the container's end doesn't match because the container should take care of emitting these comments + if (currentSourceFile && (containerEnd === -1 || (end !== containerEnd && end !== declarationListContainerEnd))) { + ts.forEachTrailingCommentRange(currentSourceFile.text, end, cb); + } + } + function hasDetachedComments(pos) { + return detachedCommentsInfo !== undefined && ts.last(detachedCommentsInfo).nodePos === pos; + } + function forEachLeadingCommentWithoutDetachedComments(cb) { + // get the leading comments from detachedPos + var pos = ts.last(detachedCommentsInfo).detachedCommentEndPos; + if (detachedCommentsInfo.length - 1) { + detachedCommentsInfo.pop(); + } + else { + detachedCommentsInfo = undefined; + } + ts.forEachLeadingCommentRange(currentSourceFile.text, pos, cb, /*state*/ pos); + } + function emitDetachedCommentsAndUpdateCommentsInfo(range) { + var currentDetachedCommentInfo = ts.emitDetachedComments(currentSourceFile.text, getCurrentLineMap(), writer, emitComment, range, newLine, commentsDisabled); + if (currentDetachedCommentInfo) { + if (detachedCommentsInfo) { + detachedCommentsInfo.push(currentDetachedCommentInfo); + } + else { + detachedCommentsInfo = [currentDetachedCommentInfo]; + } + } + } + function emitComment(text, lineMap, writer, commentPos, commentEnd, newLine) { + if (!shouldWriteComment(currentSourceFile.text, commentPos)) + return; + emitPos(commentPos); + ts.writeCommentRange(text, lineMap, writer, commentPos, commentEnd, newLine); + emitPos(commentEnd); + } + /** + * Determine if the given comment is a triple-slash + * + * @return true if the comment is a triple-slash comment else false + */ + function isTripleSlashComment(commentPos, commentEnd) { + return ts.isRecognizedTripleSlashComment(currentSourceFile.text, commentPos, commentEnd); + } + // Source Maps + function getParsedSourceMap(node) { + if (node.parsedSourceMap === undefined && node.sourceMapText !== undefined) { + node.parsedSourceMap = ts.tryParseRawSourceMap(node.sourceMapText) || false; + } + return node.parsedSourceMap || undefined; + } + function pipelineEmitWithSourceMap(hint, node) { + ts.Debug.assert(lastNode === node || lastSubstitution === node); + var pipelinePhase = getNextPipelinePhase(3 /* SourceMaps */, hint, node); + if (ts.isUnparsedSource(node) || ts.isUnparsedPrepend(node)) { + pipelinePhase(hint, node); + } + else if (ts.isUnparsedNode(node)) { + var parsed = getParsedSourceMap(node.parent); + if (parsed && sourceMapGenerator) { + sourceMapGenerator.appendSourceMap(writer.getLine(), writer.getColumn(), parsed, node.parent.sourceMapPath, node.parent.getLineAndCharacterOfPosition(node.pos), node.parent.getLineAndCharacterOfPosition(node.end)); + } + pipelinePhase(hint, node); + } + else { + var _a = ts.getSourceMapRange(node), pos = _a.pos, end = _a.end, _b = _a.source, source = _b === void 0 ? sourceMapSource : _b; + var emitFlags = ts.getEmitFlags(node); + if (node.kind !== 325 /* NotEmittedStatement */ + && (emitFlags & 16 /* NoLeadingSourceMap */) === 0 + && pos >= 0) { + emitSourcePos(source, skipSourceTrivia(source, pos)); + } + if (emitFlags & 64 /* NoNestedSourceMaps */) { + sourceMapsDisabled = true; + pipelinePhase(hint, node); + sourceMapsDisabled = false; + } + else { + pipelinePhase(hint, node); + } + if (node.kind !== 325 /* NotEmittedStatement */ + && (emitFlags & 32 /* NoTrailingSourceMap */) === 0 + && end >= 0) { + emitSourcePos(source, end); + } + } + ts.Debug.assert(lastNode === node || lastSubstitution === node); + } + /** + * Skips trivia such as comments and white-space that can be optionally overridden by the source-map source + */ + function skipSourceTrivia(source, pos) { + return source.skipTrivia ? source.skipTrivia(pos) : ts.skipTrivia(source.text, pos); + } + /** + * Emits a mapping. + * + * If the position is synthetic (undefined or a negative value), no mapping will be + * created. + * + * @param pos The position. + */ + function emitPos(pos) { + if (sourceMapsDisabled || ts.positionIsSynthesized(pos) || isJsonSourceMapSource(sourceMapSource)) { + return; + } + var _a = ts.getLineAndCharacterOfPosition(sourceMapSource, pos), sourceLine = _a.line, sourceCharacter = _a.character; + sourceMapGenerator.addMapping(writer.getLine(), writer.getColumn(), sourceMapSourceIndex, sourceLine, sourceCharacter, + /*nameIndex*/ undefined); + } + function emitSourcePos(source, pos) { + if (source !== sourceMapSource) { + var savedSourceMapSource = sourceMapSource; + setSourceMapSource(source); + emitPos(pos); + setSourceMapSource(savedSourceMapSource); + } + else { + emitPos(pos); + } + } + /** + * Emits a token of a node with possible leading and trailing source maps. + * + * @param node The node containing the token. + * @param token The token to emit. + * @param tokenStartPos The start pos of the token. + * @param emitCallback The callback used to emit the token. + */ + function emitTokenWithSourceMap(node, token, writer, tokenPos, emitCallback) { + if (sourceMapsDisabled || node && ts.isInJsonFile(node)) { + return emitCallback(token, writer, tokenPos); + } + var emitNode = node && node.emitNode; + var emitFlags = emitNode && emitNode.flags || 0 /* None */; + var range = emitNode && emitNode.tokenSourceMapRanges && emitNode.tokenSourceMapRanges[token]; + var source = range && range.source || sourceMapSource; + tokenPos = skipSourceTrivia(source, range ? range.pos : tokenPos); + if ((emitFlags & 128 /* NoTokenLeadingSourceMaps */) === 0 && tokenPos >= 0) { + emitSourcePos(source, tokenPos); + } + tokenPos = emitCallback(token, writer, tokenPos); + if (range) + tokenPos = range.end; + if ((emitFlags & 256 /* NoTokenTrailingSourceMaps */) === 0 && tokenPos >= 0) { + emitSourcePos(source, tokenPos); + } + return tokenPos; + } + function setSourceMapSource(source) { + if (sourceMapsDisabled) { + return; + } + sourceMapSource = source; + if (isJsonSourceMapSource(source)) { + return; + } + sourceMapSourceIndex = sourceMapGenerator.addSource(source.fileName); + if (printerOptions.inlineSources) { + sourceMapGenerator.setSourceContent(sourceMapSourceIndex, source.text); + } + } + function isJsonSourceMapSource(sourceFile) { + return ts.fileExtensionIs(sourceFile.fileName, ".json" /* Json */); + } + } + ts.createPrinter = createPrinter; + function createBracketsMap() { + var brackets = []; + brackets[1024 /* Braces */] = ["{", "}"]; + brackets[2048 /* Parenthesis */] = ["(", ")"]; + brackets[4096 /* AngleBrackets */] = ["<", ">"]; + brackets[8192 /* SquareBrackets */] = ["[", "]"]; + return brackets; + } + function getOpeningBracket(format) { + return brackets[format & 15360 /* BracketsMask */][0]; + } + function getClosingBracket(format) { + return brackets[format & 15360 /* BracketsMask */][1]; + } + // Flags enum to track count of temp variables and a few dedicated names + var TempFlags; + (function (TempFlags) { + TempFlags[TempFlags["Auto"] = 0] = "Auto"; + TempFlags[TempFlags["CountMask"] = 268435455] = "CountMask"; + TempFlags[TempFlags["_i"] = 268435456] = "_i"; + })(TempFlags || (TempFlags = {})); +})(ts || (ts = {})); +/* @internal */ +var ts; +(function (ts) { + function createCachedDirectoryStructureHost(host, currentDirectory, useCaseSensitiveFileNames) { + if (!host.getDirectories || !host.readDirectory) { + return undefined; + } + var cachedReadDirectoryResult = ts.createMap(); + var getCanonicalFileName = ts.createGetCanonicalFileName(useCaseSensitiveFileNames); + return { + useCaseSensitiveFileNames: useCaseSensitiveFileNames, + fileExists: fileExists, + readFile: function (path, encoding) { return host.readFile(path, encoding); }, + directoryExists: host.directoryExists && directoryExists, + getDirectories: getDirectories, + readDirectory: readDirectory, + createDirectory: host.createDirectory && createDirectory, + writeFile: host.writeFile && writeFile, + addOrDeleteFileOrDirectory: addOrDeleteFileOrDirectory, + addOrDeleteFile: addOrDeleteFile, + clearCache: clearCache, + realpath: host.realpath && realpath + }; + function toPath(fileName) { + return ts.toPath(fileName, currentDirectory, getCanonicalFileName); + } + function getCachedFileSystemEntries(rootDirPath) { + return cachedReadDirectoryResult.get(ts.ensureTrailingDirectorySeparator(rootDirPath)); + } + function getCachedFileSystemEntriesForBaseDir(path) { + return getCachedFileSystemEntries(ts.getDirectoryPath(path)); + } + function getBaseNameOfFileName(fileName) { + return ts.getBaseFileName(ts.normalizePath(fileName)); + } + function createCachedFileSystemEntries(rootDir, rootDirPath) { + var resultFromHost = { + files: ts.map(host.readDirectory(rootDir, /*extensions*/ undefined, /*exclude*/ undefined, /*include*/ ["*.*"]), getBaseNameOfFileName) || [], + directories: host.getDirectories(rootDir) || [] + }; + cachedReadDirectoryResult.set(ts.ensureTrailingDirectorySeparator(rootDirPath), resultFromHost); + return resultFromHost; + } + /** + * If the readDirectory result was already cached, it returns that + * Otherwise gets result from host and caches it. + * The host request is done under try catch block to avoid caching incorrect result + */ + function tryReadDirectory(rootDir, rootDirPath) { + rootDirPath = ts.ensureTrailingDirectorySeparator(rootDirPath); + var cachedResult = getCachedFileSystemEntries(rootDirPath); + if (cachedResult) { + return cachedResult; + } + try { + return createCachedFileSystemEntries(rootDir, rootDirPath); + } + catch (_e) { + // If there is exception to read directories, dont cache the result and direct the calls to host + ts.Debug.assert(!cachedReadDirectoryResult.has(ts.ensureTrailingDirectorySeparator(rootDirPath))); + return undefined; + } + } + function fileNameEqual(name1, name2) { + return getCanonicalFileName(name1) === getCanonicalFileName(name2); + } + function hasEntry(entries, name) { + return ts.some(entries, function (file) { return fileNameEqual(file, name); }); + } + function updateFileSystemEntry(entries, baseName, isValid) { + if (hasEntry(entries, baseName)) { + if (!isValid) { + return ts.filterMutate(entries, function (entry) { return !fileNameEqual(entry, baseName); }); + } + } + else if (isValid) { + return entries.push(baseName); + } + } + function writeFile(fileName, data, writeByteOrderMark) { + var path = toPath(fileName); + var result = getCachedFileSystemEntriesForBaseDir(path); + if (result) { + updateFilesOfFileSystemEntry(result, getBaseNameOfFileName(fileName), /*fileExists*/ true); + } + return host.writeFile(fileName, data, writeByteOrderMark); + } + function fileExists(fileName) { + var path = toPath(fileName); + var result = getCachedFileSystemEntriesForBaseDir(path); + return result && hasEntry(result.files, getBaseNameOfFileName(fileName)) || + host.fileExists(fileName); + } + function directoryExists(dirPath) { + var path = toPath(dirPath); + return cachedReadDirectoryResult.has(ts.ensureTrailingDirectorySeparator(path)) || host.directoryExists(dirPath); + } + function createDirectory(dirPath) { + var path = toPath(dirPath); + var result = getCachedFileSystemEntriesForBaseDir(path); + var baseFileName = getBaseNameOfFileName(dirPath); + if (result) { + updateFileSystemEntry(result.directories, baseFileName, /*isValid*/ true); + } + host.createDirectory(dirPath); + } + function getDirectories(rootDir) { + var rootDirPath = toPath(rootDir); + var result = tryReadDirectory(rootDir, rootDirPath); + if (result) { + return result.directories.slice(); + } + return host.getDirectories(rootDir); + } + function readDirectory(rootDir, extensions, excludes, includes, depth) { + var rootDirPath = toPath(rootDir); + var result = tryReadDirectory(rootDir, rootDirPath); + if (result) { + return ts.matchFiles(rootDir, extensions, excludes, includes, useCaseSensitiveFileNames, currentDirectory, depth, getFileSystemEntries, realpath); + } + return host.readDirectory(rootDir, extensions, excludes, includes, depth); + function getFileSystemEntries(dir) { + var path = toPath(dir); + if (path === rootDirPath) { + return result; + } + return tryReadDirectory(dir, path) || ts.emptyFileSystemEntries; + } + } + function realpath(s) { + return host.realpath ? host.realpath(s) : s; + } + function addOrDeleteFileOrDirectory(fileOrDirectory, fileOrDirectoryPath) { + var existingResult = getCachedFileSystemEntries(fileOrDirectoryPath); + if (existingResult) { + // Just clear the cache for now + // For now just clear the cache, since this could mean that multiple level entries might need to be re-evaluated + clearCache(); + return undefined; + } + var parentResult = getCachedFileSystemEntriesForBaseDir(fileOrDirectoryPath); + if (!parentResult) { + return undefined; + } + // This was earlier a file (hence not in cached directory contents) + // or we never cached the directory containing it + if (!host.directoryExists) { + // Since host doesnt support directory exists, clear the cache as otherwise it might not be same + clearCache(); + return undefined; + } + var baseName = getBaseNameOfFileName(fileOrDirectory); + var fsQueryResult = { + fileExists: host.fileExists(fileOrDirectoryPath), + directoryExists: host.directoryExists(fileOrDirectoryPath) + }; + if (fsQueryResult.directoryExists || hasEntry(parentResult.directories, baseName)) { + // Folder added or removed, clear the cache instead of updating the folder and its structure + clearCache(); + } + else { + // No need to update the directory structure, just files + updateFilesOfFileSystemEntry(parentResult, baseName, fsQueryResult.fileExists); + } + return fsQueryResult; + } + function addOrDeleteFile(fileName, filePath, eventKind) { + if (eventKind === ts.FileWatcherEventKind.Changed) { + return; + } + var parentResult = getCachedFileSystemEntriesForBaseDir(filePath); + if (parentResult) { + updateFilesOfFileSystemEntry(parentResult, getBaseNameOfFileName(fileName), eventKind === ts.FileWatcherEventKind.Created); + } + } + function updateFilesOfFileSystemEntry(parentResult, baseName, fileExists) { + updateFileSystemEntry(parentResult.files, baseName, fileExists); + } + function clearCache() { + cachedReadDirectoryResult.clear(); + } + } + ts.createCachedDirectoryStructureHost = createCachedDirectoryStructureHost; + var ConfigFileProgramReloadLevel; + (function (ConfigFileProgramReloadLevel) { + ConfigFileProgramReloadLevel[ConfigFileProgramReloadLevel["None"] = 0] = "None"; + /** Update the file name list from the disk */ + ConfigFileProgramReloadLevel[ConfigFileProgramReloadLevel["Partial"] = 1] = "Partial"; + /** Reload completely by re-reading contents of config file from disk and updating program */ + ConfigFileProgramReloadLevel[ConfigFileProgramReloadLevel["Full"] = 2] = "Full"; + })(ConfigFileProgramReloadLevel = ts.ConfigFileProgramReloadLevel || (ts.ConfigFileProgramReloadLevel = {})); + /** + * Updates the existing missing file watches with the new set of missing files after new program is created + */ + function updateMissingFilePathsWatch(program, missingFileWatches, createMissingFileWatch) { + var missingFilePaths = program.getMissingFilePaths(); + var newMissingFilePathMap = ts.arrayToSet(missingFilePaths); + // Update the missing file paths watcher + ts.mutateMap(missingFileWatches, newMissingFilePathMap, { + // Watch the missing files + createNewValue: createMissingFileWatch, + // Files that are no longer missing (e.g. because they are no longer required) + // should no longer be watched. + onDeleteValue: ts.closeFileWatcher + }); + } + ts.updateMissingFilePathsWatch = updateMissingFilePathsWatch; + /** + * Updates the existing wild card directory watches with the new set of wild card directories from the config file + * after new program is created because the config file was reloaded or program was created first time from the config file + * Note that there is no need to call this function when the program is updated with additional files without reloading config files, + * as wildcard directories wont change unless reloading config file + */ + function updateWatchingWildcardDirectories(existingWatchedForWildcards, wildcardDirectories, watchDirectory) { + ts.mutateMap(existingWatchedForWildcards, wildcardDirectories, { + // Create new watch and recursive info + createNewValue: createWildcardDirectoryWatcher, + // Close existing watch thats not needed any more + onDeleteValue: closeFileWatcherOf, + // Close existing watch that doesnt match in the flags + onExistingValue: updateWildcardDirectoryWatcher + }); + function createWildcardDirectoryWatcher(directory, flags) { + // Create new watch and recursive info + return { + watcher: watchDirectory(directory, flags), + flags: flags + }; + } + function updateWildcardDirectoryWatcher(existingWatcher, flags, directory) { + // Watcher needs to be updated if the recursive flags dont match + if (existingWatcher.flags === flags) { + return; + } + existingWatcher.watcher.close(); + existingWatchedForWildcards.set(directory, createWildcardDirectoryWatcher(directory, flags)); + } + } + ts.updateWatchingWildcardDirectories = updateWatchingWildcardDirectories; + function isEmittedFileOfProgram(program, file) { + if (!program) { + return false; + } + return program.isEmittedFile(file); + } + ts.isEmittedFileOfProgram = isEmittedFileOfProgram; + var WatchLogLevel; + (function (WatchLogLevel) { + WatchLogLevel[WatchLogLevel["None"] = 0] = "None"; + WatchLogLevel[WatchLogLevel["TriggerOnly"] = 1] = "TriggerOnly"; + WatchLogLevel[WatchLogLevel["Verbose"] = 2] = "Verbose"; + })(WatchLogLevel = ts.WatchLogLevel || (ts.WatchLogLevel = {})); + function getWatchFactory(watchLogLevel, log, getDetailWatchInfo) { + return getWatchFactoryWith(watchLogLevel, log, getDetailWatchInfo, watchFile, watchDirectory); + } + ts.getWatchFactory = getWatchFactory; + function getWatchFactoryWith(watchLogLevel, log, getDetailWatchInfo, watchFile, watchDirectory) { + var createFileWatcher = getCreateFileWatcher(watchLogLevel, watchFile); + var createFilePathWatcher = watchLogLevel === WatchLogLevel.None ? watchFilePath : createFileWatcher; + var createDirectoryWatcher = getCreateFileWatcher(watchLogLevel, watchDirectory); + if (watchLogLevel === WatchLogLevel.Verbose && ts.sysLog === ts.noop) { + ts.setSysLog(function (s) { return log(s); }); + } + return { + watchFile: function (host, file, callback, pollingInterval, options, detailInfo1, detailInfo2) { + return createFileWatcher(host, file, callback, pollingInterval, options, /*passThrough*/ undefined, detailInfo1, detailInfo2, watchFile, log, "FileWatcher", getDetailWatchInfo); + }, + watchFilePath: function (host, file, callback, pollingInterval, options, path, detailInfo1, detailInfo2) { + return createFilePathWatcher(host, file, callback, pollingInterval, options, path, detailInfo1, detailInfo2, watchFile, log, "FileWatcher", getDetailWatchInfo); + }, + watchDirectory: function (host, directory, callback, flags, options, detailInfo1, detailInfo2) { + return createDirectoryWatcher(host, directory, callback, flags, options, /*passThrough*/ undefined, detailInfo1, detailInfo2, watchDirectory, log, "DirectoryWatcher", getDetailWatchInfo); + } + }; + } + function watchFile(host, file, callback, pollingInterval, options) { + return host.watchFile(file, callback, pollingInterval, options); + } + function watchFilePath(host, file, callback, pollingInterval, options, path) { + return watchFile(host, file, function (fileName, eventKind) { return callback(fileName, eventKind, path); }, pollingInterval, options); + } + function watchDirectory(host, directory, callback, flags, options) { + return host.watchDirectory(directory, callback, (flags & 1 /* Recursive */) !== 0, options); + } + function getCreateFileWatcher(watchLogLevel, addWatch) { + switch (watchLogLevel) { + case WatchLogLevel.None: + return addWatch; + case WatchLogLevel.TriggerOnly: + return createFileWatcherWithTriggerLogging; + case WatchLogLevel.Verbose: + return addWatch === watchDirectory ? createDirectoryWatcherWithLogging : createFileWatcherWithLogging; + } + } + function createFileWatcherWithLogging(host, file, cb, flags, options, passThrough, detailInfo1, detailInfo2, addWatch, log, watchCaption, getDetailWatchInfo) { + log(watchCaption + ":: Added:: " + getWatchInfo(file, flags, options, detailInfo1, detailInfo2, getDetailWatchInfo)); + var watcher = createFileWatcherWithTriggerLogging(host, file, cb, flags, options, passThrough, detailInfo1, detailInfo2, addWatch, log, watchCaption, getDetailWatchInfo); + return { + close: function () { + log(watchCaption + ":: Close:: " + getWatchInfo(file, flags, options, detailInfo1, detailInfo2, getDetailWatchInfo)); + watcher.close(); + } + }; + } + function createDirectoryWatcherWithLogging(host, file, cb, flags, options, passThrough, detailInfo1, detailInfo2, addWatch, log, watchCaption, getDetailWatchInfo) { + var watchInfo = watchCaption + ":: Added:: " + getWatchInfo(file, flags, options, detailInfo1, detailInfo2, getDetailWatchInfo); + log(watchInfo); + var start = ts.timestamp(); + var watcher = createFileWatcherWithTriggerLogging(host, file, cb, flags, options, passThrough, detailInfo1, detailInfo2, addWatch, log, watchCaption, getDetailWatchInfo); + var elapsed = ts.timestamp() - start; + log("Elapsed:: " + elapsed + "ms " + watchInfo); + return { + close: function () { + var watchInfo = watchCaption + ":: Close:: " + getWatchInfo(file, flags, options, detailInfo1, detailInfo2, getDetailWatchInfo); + log(watchInfo); + var start = ts.timestamp(); + watcher.close(); + var elapsed = ts.timestamp() - start; + log("Elapsed:: " + elapsed + "ms " + watchInfo); + } + }; + } + function createFileWatcherWithTriggerLogging(host, file, cb, flags, options, passThrough, detailInfo1, detailInfo2, addWatch, log, watchCaption, getDetailWatchInfo) { + return addWatch(host, file, function (fileName, cbOptional) { + var triggerredInfo = watchCaption + ":: Triggered with " + fileName + " " + (cbOptional !== undefined ? cbOptional : "") + ":: " + getWatchInfo(file, flags, options, detailInfo1, detailInfo2, getDetailWatchInfo); + log(triggerredInfo); + var start = ts.timestamp(); + cb(fileName, cbOptional, passThrough); + var elapsed = ts.timestamp() - start; + log("Elapsed:: " + elapsed + "ms " + triggerredInfo); + }, flags, options); + } + function getFallbackOptions(options) { + var fallbackPolling = options === null || options === void 0 ? void 0 : options.fallbackPolling; + return { + watchFile: fallbackPolling !== undefined ? + fallbackPolling : + ts.WatchFileKind.PriorityPollingInterval + }; + } + ts.getFallbackOptions = getFallbackOptions; + function getWatchInfo(file, flags, options, detailInfo1, detailInfo2, getDetailWatchInfo) { + return "WatchInfo: " + file + " " + flags + " " + JSON.stringify(options) + " " + (getDetailWatchInfo ? getDetailWatchInfo(detailInfo1, detailInfo2) : detailInfo2 === undefined ? detailInfo1 : detailInfo1 + " " + detailInfo2); + } + function closeFileWatcherOf(objWithWatcher) { + objWithWatcher.watcher.close(); + } + ts.closeFileWatcherOf = closeFileWatcherOf; +})(ts || (ts = {})); +var ts; +(function (ts) { + function findConfigFile(searchPath, fileExists, configName) { + if (configName === void 0) { configName = "tsconfig.json"; } + return ts.forEachAncestorDirectory(searchPath, function (ancestor) { + var fileName = ts.combinePaths(ancestor, configName); + return fileExists(fileName) ? fileName : undefined; + }); + } + ts.findConfigFile = findConfigFile; + function resolveTripleslashReference(moduleName, containingFile) { + var basePath = ts.getDirectoryPath(containingFile); + var referencedFileName = ts.isRootedDiskPath(moduleName) ? moduleName : ts.combinePaths(basePath, moduleName); + return ts.normalizePath(referencedFileName); + } + ts.resolveTripleslashReference = resolveTripleslashReference; + /* @internal */ + function computeCommonSourceDirectoryOfFilenames(fileNames, currentDirectory, getCanonicalFileName) { + var commonPathComponents; + var failed = ts.forEach(fileNames, function (sourceFile) { + // Each file contributes into common source file path + var sourcePathComponents = ts.getNormalizedPathComponents(sourceFile, currentDirectory); + sourcePathComponents.pop(); // The base file name is not part of the common directory path + if (!commonPathComponents) { + // first file + commonPathComponents = sourcePathComponents; + return; + } + var n = Math.min(commonPathComponents.length, sourcePathComponents.length); + for (var i = 0; i < n; i++) { + if (getCanonicalFileName(commonPathComponents[i]) !== getCanonicalFileName(sourcePathComponents[i])) { + if (i === 0) { + // Failed to find any common path component + return true; + } + // New common path found that is 0 -> i-1 + commonPathComponents.length = i; + break; + } + } + // If the sourcePathComponents was shorter than the commonPathComponents, truncate to the sourcePathComponents + if (sourcePathComponents.length < commonPathComponents.length) { + commonPathComponents.length = sourcePathComponents.length; + } + }); + // A common path can not be found when paths span multiple drives on windows, for example + if (failed) { + return ""; + } + if (!commonPathComponents) { // Can happen when all input files are .d.ts files + return currentDirectory; + } + return ts.getPathFromPathComponents(commonPathComponents); + } + ts.computeCommonSourceDirectoryOfFilenames = computeCommonSourceDirectoryOfFilenames; + function createCompilerHost(options, setParentNodes) { + return createCompilerHostWorker(options, setParentNodes); + } + ts.createCompilerHost = createCompilerHost; + /*@internal*/ + // TODO(shkamat): update this after reworking ts build API + function createCompilerHostWorker(options, setParentNodes, system) { + if (system === void 0) { system = ts.sys; } + var existingDirectories = ts.createMap(); + var getCanonicalFileName = ts.createGetCanonicalFileName(system.useCaseSensitiveFileNames); + function getSourceFile(fileName, languageVersion, onError) { + var text; + try { + ts.performance.mark("beforeIORead"); + text = compilerHost.readFile(fileName); + ts.performance.mark("afterIORead"); + ts.performance.measure("I/O Read", "beforeIORead", "afterIORead"); + } + catch (e) { + if (onError) { + onError(e.message); + } + text = ""; + } + return text !== undefined ? ts.createSourceFile(fileName, text, languageVersion, setParentNodes) : undefined; + } + function directoryExists(directoryPath) { + if (existingDirectories.has(directoryPath)) { + return true; + } + if ((compilerHost.directoryExists || system.directoryExists)(directoryPath)) { + existingDirectories.set(directoryPath, true); + return true; + } + return false; + } + function writeFile(fileName, data, writeByteOrderMark, onError) { + try { + ts.performance.mark("beforeIOWrite"); + // NOTE: If patchWriteFileEnsuringDirectory has been called, + // the system.writeFile will do its own directory creation and + // the ensureDirectoriesExist call will always be redundant. + ts.writeFileEnsuringDirectories(fileName, data, writeByteOrderMark, function (path, data, writeByteOrderMark) { return writeFileWorker(path, data, writeByteOrderMark); }, function (path) { return (compilerHost.createDirectory || system.createDirectory)(path); }, function (path) { return directoryExists(path); }); + ts.performance.mark("afterIOWrite"); + ts.performance.measure("I/O Write", "beforeIOWrite", "afterIOWrite"); + } + catch (e) { + if (onError) { + onError(e.message); + } + } + } + var outputFingerprints; + function writeFileWorker(fileName, data, writeByteOrderMark) { + if (!ts.isWatchSet(options) || !system.createHash || !system.getModifiedTime) { + system.writeFile(fileName, data, writeByteOrderMark); + return; + } + if (!outputFingerprints) { + outputFingerprints = ts.createMap(); + } + var hash = system.createHash(data); + var mtimeBefore = system.getModifiedTime(fileName); + if (mtimeBefore) { + var fingerprint = outputFingerprints.get(fileName); + // If output has not been changed, and the file has no external modification + if (fingerprint && + fingerprint.byteOrderMark === writeByteOrderMark && + fingerprint.hash === hash && + fingerprint.mtime.getTime() === mtimeBefore.getTime()) { + return; + } + } + system.writeFile(fileName, data, writeByteOrderMark); + var mtimeAfter = system.getModifiedTime(fileName) || ts.missingFileModifiedTime; + outputFingerprints.set(fileName, { + hash: hash, + byteOrderMark: writeByteOrderMark, + mtime: mtimeAfter + }); + } + function getDefaultLibLocation() { + return ts.getDirectoryPath(ts.normalizePath(system.getExecutingFilePath())); + } + var newLine = ts.getNewLineCharacter(options, function () { return system.newLine; }); + var realpath = system.realpath && (function (path) { return system.realpath(path); }); + var compilerHost = { + getSourceFile: getSourceFile, + getDefaultLibLocation: getDefaultLibLocation, + getDefaultLibFileName: function (options) { return ts.combinePaths(getDefaultLibLocation(), ts.getDefaultLibFileName(options)); }, + writeFile: writeFile, + getCurrentDirectory: ts.memoize(function () { return system.getCurrentDirectory(); }), + useCaseSensitiveFileNames: function () { return system.useCaseSensitiveFileNames; }, + getCanonicalFileName: getCanonicalFileName, + getNewLine: function () { return newLine; }, + fileExists: function (fileName) { return system.fileExists(fileName); }, + readFile: function (fileName) { return system.readFile(fileName); }, + trace: function (s) { return system.write(s + newLine); }, + directoryExists: function (directoryName) { return system.directoryExists(directoryName); }, + getEnvironmentVariable: function (name) { return system.getEnvironmentVariable ? system.getEnvironmentVariable(name) : ""; }, + getDirectories: function (path) { return system.getDirectories(path); }, + realpath: realpath, + readDirectory: function (path, extensions, include, exclude, depth) { return system.readDirectory(path, extensions, include, exclude, depth); }, + createDirectory: function (d) { return system.createDirectory(d); }, + createHash: ts.maybeBind(system, system.createHash) + }; + return compilerHost; + } + ts.createCompilerHostWorker = createCompilerHostWorker; + /*@internal*/ + function changeCompilerHostLikeToUseCache(host, toPath, getSourceFile) { + var originalReadFile = host.readFile; + var originalFileExists = host.fileExists; + var originalDirectoryExists = host.directoryExists; + var originalCreateDirectory = host.createDirectory; + var originalWriteFile = host.writeFile; + var readFileCache = ts.createMap(); + var fileExistsCache = ts.createMap(); + var directoryExistsCache = ts.createMap(); + var sourceFileCache = ts.createMap(); + var readFileWithCache = function (fileName) { + var key = toPath(fileName); + var value = readFileCache.get(key); + if (value !== undefined) + return value !== false ? value : undefined; + return setReadFileCache(key, fileName); + }; + var setReadFileCache = function (key, fileName) { + var newValue = originalReadFile.call(host, fileName); + readFileCache.set(key, newValue !== undefined ? newValue : false); + return newValue; + }; + host.readFile = function (fileName) { + var key = toPath(fileName); + var value = readFileCache.get(key); + if (value !== undefined) + return value !== false ? value : undefined; // could be .d.ts from output + // Cache json or buildInfo + if (!ts.fileExtensionIs(fileName, ".json" /* Json */) && !ts.isBuildInfoFile(fileName)) { + return originalReadFile.call(host, fileName); + } + return setReadFileCache(key, fileName); + }; + var getSourceFileWithCache = getSourceFile ? function (fileName, languageVersion, onError, shouldCreateNewSourceFile) { + var key = toPath(fileName); + var value = sourceFileCache.get(key); + if (value) + return value; + var sourceFile = getSourceFile(fileName, languageVersion, onError, shouldCreateNewSourceFile); + if (sourceFile && (ts.isDeclarationFileName(fileName) || ts.fileExtensionIs(fileName, ".json" /* Json */))) { + sourceFileCache.set(key, sourceFile); + } + return sourceFile; + } : undefined; + // fileExists for any kind of extension + host.fileExists = function (fileName) { + var key = toPath(fileName); + var value = fileExistsCache.get(key); + if (value !== undefined) + return value; + var newValue = originalFileExists.call(host, fileName); + fileExistsCache.set(key, !!newValue); + return newValue; + }; + if (originalWriteFile) { + host.writeFile = function (fileName, data, writeByteOrderMark, onError, sourceFiles) { + var key = toPath(fileName); + fileExistsCache.delete(key); + var value = readFileCache.get(key); + if (value !== undefined && value !== data) { + readFileCache.delete(key); + sourceFileCache.delete(key); + } + else if (getSourceFileWithCache) { + var sourceFile = sourceFileCache.get(key); + if (sourceFile && sourceFile.text !== data) { + sourceFileCache.delete(key); + } + } + originalWriteFile.call(host, fileName, data, writeByteOrderMark, onError, sourceFiles); + }; + } + // directoryExists + if (originalDirectoryExists && originalCreateDirectory) { + host.directoryExists = function (directory) { + var key = toPath(directory); + var value = directoryExistsCache.get(key); + if (value !== undefined) + return value; + var newValue = originalDirectoryExists.call(host, directory); + directoryExistsCache.set(key, !!newValue); + return newValue; + }; + host.createDirectory = function (directory) { + var key = toPath(directory); + directoryExistsCache.delete(key); + originalCreateDirectory.call(host, directory); + }; + } + return { + originalReadFile: originalReadFile, + originalFileExists: originalFileExists, + originalDirectoryExists: originalDirectoryExists, + originalCreateDirectory: originalCreateDirectory, + originalWriteFile: originalWriteFile, + getSourceFileWithCache: getSourceFileWithCache, + readFileWithCache: readFileWithCache + }; + } + ts.changeCompilerHostLikeToUseCache = changeCompilerHostLikeToUseCache; + function getPreEmitDiagnostics(program, sourceFile, cancellationToken) { + var diagnostics; + diagnostics = ts.addRange(diagnostics, program.getConfigFileParsingDiagnostics()); + diagnostics = ts.addRange(diagnostics, program.getOptionsDiagnostics(cancellationToken)); + diagnostics = ts.addRange(diagnostics, program.getSyntacticDiagnostics(sourceFile, cancellationToken)); + diagnostics = ts.addRange(diagnostics, program.getGlobalDiagnostics(cancellationToken)); + diagnostics = ts.addRange(diagnostics, program.getSemanticDiagnostics(sourceFile, cancellationToken)); + if (ts.getEmitDeclarations(program.getCompilerOptions())) { + diagnostics = ts.addRange(diagnostics, program.getDeclarationDiagnostics(sourceFile, cancellationToken)); + } + return ts.sortAndDeduplicateDiagnostics(diagnostics || ts.emptyArray); + } + ts.getPreEmitDiagnostics = getPreEmitDiagnostics; + function formatDiagnostics(diagnostics, host) { + var output = ""; + for (var _i = 0, diagnostics_2 = diagnostics; _i < diagnostics_2.length; _i++) { + var diagnostic = diagnostics_2[_i]; + output += formatDiagnostic(diagnostic, host); + } + return output; + } + ts.formatDiagnostics = formatDiagnostics; + function formatDiagnostic(diagnostic, host) { + var errorMessage = ts.diagnosticCategoryName(diagnostic) + " TS" + diagnostic.code + ": " + flattenDiagnosticMessageText(diagnostic.messageText, host.getNewLine()) + host.getNewLine(); + if (diagnostic.file) { + var _a = ts.getLineAndCharacterOfPosition(diagnostic.file, diagnostic.start), line = _a.line, character = _a.character; // TODO: GH#18217 + var fileName = diagnostic.file.fileName; + var relativeFileName = ts.convertToRelativePath(fileName, host.getCurrentDirectory(), function (fileName) { return host.getCanonicalFileName(fileName); }); + return relativeFileName + "(" + (line + 1) + "," + (character + 1) + "): " + errorMessage; + } + return errorMessage; + } + ts.formatDiagnostic = formatDiagnostic; + /** @internal */ + var ForegroundColorEscapeSequences; + (function (ForegroundColorEscapeSequences) { + ForegroundColorEscapeSequences["Grey"] = "\u001B[90m"; + ForegroundColorEscapeSequences["Red"] = "\u001B[91m"; + ForegroundColorEscapeSequences["Yellow"] = "\u001B[93m"; + ForegroundColorEscapeSequences["Blue"] = "\u001B[94m"; + ForegroundColorEscapeSequences["Cyan"] = "\u001B[96m"; + })(ForegroundColorEscapeSequences = ts.ForegroundColorEscapeSequences || (ts.ForegroundColorEscapeSequences = {})); + var gutterStyleSequence = "\u001b[7m"; + var gutterSeparator = " "; + var resetEscapeSequence = "\u001b[0m"; + var ellipsis = "..."; + var halfIndent = " "; + var indent = " "; + function getCategoryFormat(category) { + switch (category) { + case ts.DiagnosticCategory.Error: return ForegroundColorEscapeSequences.Red; + case ts.DiagnosticCategory.Warning: return ForegroundColorEscapeSequences.Yellow; + case ts.DiagnosticCategory.Suggestion: return ts.Debug.fail("Should never get an Info diagnostic on the command line."); + case ts.DiagnosticCategory.Message: return ForegroundColorEscapeSequences.Blue; + } + } + /** @internal */ + function formatColorAndReset(text, formatStyle) { + return formatStyle + text + resetEscapeSequence; + } + ts.formatColorAndReset = formatColorAndReset; + function formatCodeSpan(file, start, length, indent, squiggleColor, host) { + var _a = ts.getLineAndCharacterOfPosition(file, start), firstLine = _a.line, firstLineChar = _a.character; + var _b = ts.getLineAndCharacterOfPosition(file, start + length), lastLine = _b.line, lastLineChar = _b.character; + var lastLineInFile = ts.getLineAndCharacterOfPosition(file, file.text.length).line; + var hasMoreThanFiveLines = (lastLine - firstLine) >= 4; + var gutterWidth = (lastLine + 1 + "").length; + if (hasMoreThanFiveLines) { + gutterWidth = Math.max(ellipsis.length, gutterWidth); + } + var context = ""; + for (var i = firstLine; i <= lastLine; i++) { + context += host.getNewLine(); + // If the error spans over 5 lines, we'll only show the first 2 and last 2 lines, + // so we'll skip ahead to the second-to-last line. + if (hasMoreThanFiveLines && firstLine + 1 < i && i < lastLine - 1) { + context += indent + formatColorAndReset(ts.padLeft(ellipsis, gutterWidth), gutterStyleSequence) + gutterSeparator + host.getNewLine(); + i = lastLine - 1; + } + var lineStart = ts.getPositionOfLineAndCharacter(file, i, 0); + var lineEnd = i < lastLineInFile ? ts.getPositionOfLineAndCharacter(file, i + 1, 0) : file.text.length; + var lineContent = file.text.slice(lineStart, lineEnd); + lineContent = lineContent.replace(/\s+$/g, ""); // trim from end + lineContent = lineContent.replace("\t", " "); // convert tabs to single spaces + // Output the gutter and the actual contents of the line. + context += indent + formatColorAndReset(ts.padLeft(i + 1 + "", gutterWidth), gutterStyleSequence) + gutterSeparator; + context += lineContent + host.getNewLine(); + // Output the gutter and the error span for the line using tildes. + context += indent + formatColorAndReset(ts.padLeft("", gutterWidth), gutterStyleSequence) + gutterSeparator; + context += squiggleColor; + if (i === firstLine) { + // If we're on the last line, then limit it to the last character of the last line. + // Otherwise, we'll just squiggle the rest of the line, giving 'slice' no end position. + var lastCharForLine = i === lastLine ? lastLineChar : undefined; + context += lineContent.slice(0, firstLineChar).replace(/\S/g, " "); + context += lineContent.slice(firstLineChar, lastCharForLine).replace(/./g, "~"); + } + else if (i === lastLine) { + context += lineContent.slice(0, lastLineChar).replace(/./g, "~"); + } + else { + // Squiggle the entire line. + context += lineContent.replace(/./g, "~"); + } + context += resetEscapeSequence; + } + return context; + } + /* @internal */ + function formatLocation(file, start, host, color) { + if (color === void 0) { color = formatColorAndReset; } + var _a = ts.getLineAndCharacterOfPosition(file, start), firstLine = _a.line, firstLineChar = _a.character; // TODO: GH#18217 + var relativeFileName = host ? ts.convertToRelativePath(file.fileName, host.getCurrentDirectory(), function (fileName) { return host.getCanonicalFileName(fileName); }) : file.fileName; + var output = ""; + output += color(relativeFileName, ForegroundColorEscapeSequences.Cyan); + output += ":"; + output += color("" + (firstLine + 1), ForegroundColorEscapeSequences.Yellow); + output += ":"; + output += color("" + (firstLineChar + 1), ForegroundColorEscapeSequences.Yellow); + return output; + } + ts.formatLocation = formatLocation; + function formatDiagnosticsWithColorAndContext(diagnostics, host) { + var output = ""; + for (var _i = 0, diagnostics_3 = diagnostics; _i < diagnostics_3.length; _i++) { + var diagnostic = diagnostics_3[_i]; + if (diagnostic.file) { + var file = diagnostic.file, start = diagnostic.start; + output += formatLocation(file, start, host); // TODO: GH#18217 + output += " - "; + } + output += formatColorAndReset(ts.diagnosticCategoryName(diagnostic), getCategoryFormat(diagnostic.category)); + output += formatColorAndReset(" TS" + diagnostic.code + ": ", ForegroundColorEscapeSequences.Grey); + output += flattenDiagnosticMessageText(diagnostic.messageText, host.getNewLine()); + if (diagnostic.file) { + output += host.getNewLine(); + output += formatCodeSpan(diagnostic.file, diagnostic.start, diagnostic.length, "", getCategoryFormat(diagnostic.category), host); // TODO: GH#18217 + if (diagnostic.relatedInformation) { + output += host.getNewLine(); + for (var _a = 0, _b = diagnostic.relatedInformation; _a < _b.length; _a++) { + var _c = _b[_a], file = _c.file, start = _c.start, length_8 = _c.length, messageText = _c.messageText; + if (file) { + output += host.getNewLine(); + output += halfIndent + formatLocation(file, start, host); // TODO: GH#18217 + output += formatCodeSpan(file, start, length_8, indent, ForegroundColorEscapeSequences.Cyan, host); // TODO: GH#18217 + } + output += host.getNewLine(); + output += indent + flattenDiagnosticMessageText(messageText, host.getNewLine()); + } + } + } + output += host.getNewLine(); + } + return output; + } + ts.formatDiagnosticsWithColorAndContext = formatDiagnosticsWithColorAndContext; + function flattenDiagnosticMessageText(diag, newLine, indent) { + if (indent === void 0) { indent = 0; } + if (ts.isString(diag)) { + return diag; + } + else if (diag === undefined) { + return ""; + } + var result = ""; + if (indent) { + result += newLine; + for (var i = 0; i < indent; i++) { + result += " "; + } + } + result += diag.messageText; + indent++; + if (diag.next) { + for (var _i = 0, _a = diag.next; _i < _a.length; _i++) { + var kid = _a[_i]; + result += flattenDiagnosticMessageText(kid, newLine, indent); + } + } + return result; + } + ts.flattenDiagnosticMessageText = flattenDiagnosticMessageText; + /* @internal */ + function loadWithLocalCache(names, containingFile, redirectedReference, loader) { + if (names.length === 0) { + return []; + } + var resolutions = []; + var cache = ts.createMap(); + for (var _i = 0, names_2 = names; _i < names_2.length; _i++) { + var name = names_2[_i]; + var result = void 0; + if (cache.has(name)) { + result = cache.get(name); + } + else { + cache.set(name, result = loader(name, containingFile, redirectedReference)); + } + resolutions.push(result); + } + return resolutions; + } + ts.loadWithLocalCache = loadWithLocalCache; + /* @internal */ + ts.inferredTypesContainingFile = "__inferred type names__.ts"; + /** + * Determines if program structure is upto date or needs to be recreated + */ + /* @internal */ + function isProgramUptoDate(program, rootFileNames, newOptions, getSourceVersion, fileExists, hasInvalidatedResolution, hasChangedAutomaticTypeDirectiveNames, projectReferences) { + // If we haven't created a program yet or have changed automatic type directives, then it is not up-to-date + if (!program || hasChangedAutomaticTypeDirectiveNames) { + return false; + } + // If root file names don't match + if (!ts.arrayIsEqualTo(program.getRootFileNames(), rootFileNames)) { + return false; + } + var seenResolvedRefs; + // If project references don't match + if (!ts.arrayIsEqualTo(program.getProjectReferences(), projectReferences, projectReferenceUptoDate)) { + return false; + } + // If any file is not up-to-date, then the whole program is not up-to-date + if (program.getSourceFiles().some(sourceFileNotUptoDate)) { + return false; + } + // If any of the missing file paths are now created + if (program.getMissingFilePaths().some(fileExists)) { + return false; + } + var currentOptions = program.getCompilerOptions(); + // If the compilation settings do no match, then the program is not up-to-date + if (!ts.compareDataObjects(currentOptions, newOptions)) { + return false; + } + // If everything matches but the text of config file is changed, + // error locations can change for program options, so update the program + if (currentOptions.configFile && newOptions.configFile) { + return currentOptions.configFile.text === newOptions.configFile.text; + } + return true; + function sourceFileNotUptoDate(sourceFile) { + return !sourceFileVersionUptoDate(sourceFile) || + hasInvalidatedResolution(sourceFile.path); + } + function sourceFileVersionUptoDate(sourceFile) { + return sourceFile.version === getSourceVersion(sourceFile.resolvedPath, sourceFile.fileName); + } + function projectReferenceUptoDate(oldRef, newRef, index) { + if (!ts.projectReferenceIsEqualTo(oldRef, newRef)) { + return false; + } + return resolvedProjectReferenceUptoDate(program.getResolvedProjectReferences()[index], oldRef); + } + function resolvedProjectReferenceUptoDate(oldResolvedRef, oldRef) { + if (oldResolvedRef) { + if (ts.contains(seenResolvedRefs, oldResolvedRef)) { + // Assume true + return true; + } + // If sourceFile for the oldResolvedRef existed, check the version for uptodate + if (!sourceFileVersionUptoDate(oldResolvedRef.sourceFile)) { + return false; + } + // Add to seen before checking the referenced paths of this config file + (seenResolvedRefs || (seenResolvedRefs = [])).push(oldResolvedRef); + // If child project references are upto date, this project reference is uptodate + return !ts.forEach(oldResolvedRef.references, function (childResolvedRef, index) { + return !resolvedProjectReferenceUptoDate(childResolvedRef, oldResolvedRef.commandLine.projectReferences[index]); + }); + } + // In old program, not able to resolve project reference path, + // so if config file doesnt exist, it is uptodate. + return !fileExists(resolveProjectReferencePath(oldRef)); + } + } + ts.isProgramUptoDate = isProgramUptoDate; + function getConfigFileParsingDiagnostics(configFileParseResult) { + return configFileParseResult.options.configFile ? __spreadArrays(configFileParseResult.options.configFile.parseDiagnostics, configFileParseResult.errors) : + configFileParseResult.errors; + } + ts.getConfigFileParsingDiagnostics = getConfigFileParsingDiagnostics; + /** + * Determine if source file needs to be re-created even if its text hasn't changed + */ + function shouldProgramCreateNewSourceFiles(program, newOptions) { + if (!program) + return false; + // If any compiler options change, we can't reuse old source file even if version match + // The change in options like these could result in change in syntax tree or `sourceFile.bindDiagnostics`. + var oldOptions = program.getCompilerOptions(); + return !!ts.sourceFileAffectingCompilerOptions.some(function (option) { + return !ts.isJsonEqual(ts.getCompilerOptionValue(oldOptions, option), ts.getCompilerOptionValue(newOptions, option)); + }); + } + function createCreateProgramOptions(rootNames, options, host, oldProgram, configFileParsingDiagnostics) { + return { + rootNames: rootNames, + options: options, + host: host, + oldProgram: oldProgram, + configFileParsingDiagnostics: configFileParsingDiagnostics + }; + } + function createProgram(rootNamesOrOptions, _options, _host, _oldProgram, _configFileParsingDiagnostics) { + var _a; + var createProgramOptions = ts.isArray(rootNamesOrOptions) ? createCreateProgramOptions(rootNamesOrOptions, _options, _host, _oldProgram, _configFileParsingDiagnostics) : rootNamesOrOptions; // TODO: GH#18217 + var rootNames = createProgramOptions.rootNames, options = createProgramOptions.options, configFileParsingDiagnostics = createProgramOptions.configFileParsingDiagnostics, projectReferences = createProgramOptions.projectReferences; + var oldProgram = createProgramOptions.oldProgram; + var processingDefaultLibFiles; + var processingOtherFiles; + var files; + var symlinks; + var commonSourceDirectory; + var diagnosticsProducingTypeChecker; + var noDiagnosticsTypeChecker; + var classifiableNames; + var ambientModuleNameToUnmodifiedFileName = ts.createMap(); + // Todo:: Use this to report why file was included in --extendedDiagnostics + var refFileMap; + var cachedBindAndCheckDiagnosticsForFile = {}; + var cachedDeclarationDiagnosticsForFile = {}; + var resolvedTypeReferenceDirectives = ts.createMap(); + var fileProcessingDiagnostics = ts.createDiagnosticCollection(); + // The below settings are to track if a .js file should be add to the program if loaded via searching under node_modules. + // This works as imported modules are discovered recursively in a depth first manner, specifically: + // - For each root file, findSourceFile is called. + // - This calls processImportedModules for each module imported in the source file. + // - This calls resolveModuleNames, and then calls findSourceFile for each resolved module. + // As all these operations happen - and are nested - within the createProgram call, they close over the below variables. + // The current resolution depth is tracked by incrementing/decrementing as the depth first search progresses. + var maxNodeModuleJsDepth = typeof options.maxNodeModuleJsDepth === "number" ? options.maxNodeModuleJsDepth : 0; + var currentNodeModulesDepth = 0; + // If a module has some of its imports skipped due to being at the depth limit under node_modules, then track + // this, as it may be imported at a shallower depth later, and then it will need its skipped imports processed. + var modulesWithElidedImports = ts.createMap(); + // Track source files that are source files found by searching under node_modules, as these shouldn't be compiled. + var sourceFilesFoundSearchingNodeModules = ts.createMap(); + ts.performance.mark("beforeProgram"); + var host = createProgramOptions.host || createCompilerHost(options); + var configParsingHost = parseConfigHostFromCompilerHostLike(host); + var skipDefaultLib = options.noLib; + var getDefaultLibraryFileName = ts.memoize(function () { return host.getDefaultLibFileName(options); }); + var defaultLibraryPath = host.getDefaultLibLocation ? host.getDefaultLibLocation() : ts.getDirectoryPath(getDefaultLibraryFileName()); + var programDiagnostics = ts.createDiagnosticCollection(); + var currentDirectory = host.getCurrentDirectory(); + var supportedExtensions = ts.getSupportedExtensions(options); + var supportedExtensionsWithJsonIfResolveJsonModule = ts.getSuppoertedExtensionsWithJsonIfResolveJsonModule(options, supportedExtensions); + // Map storing if there is emit blocking diagnostics for given input + var hasEmitBlockingDiagnostics = ts.createMap(); + var _compilerOptionsObjectLiteralSyntax; + var moduleResolutionCache; + var actualResolveModuleNamesWorker; + var hasInvalidatedResolution = host.hasInvalidatedResolution || ts.returnFalse; + if (host.resolveModuleNames) { + actualResolveModuleNamesWorker = function (moduleNames, containingFile, reusedNames, redirectedReference) { return host.resolveModuleNames(ts.Debug.checkEachDefined(moduleNames), containingFile, reusedNames, redirectedReference, options).map(function (resolved) { + // An older host may have omitted extension, in which case we should infer it from the file extension of resolvedFileName. + if (!resolved || resolved.extension !== undefined) { + return resolved; + } + var withExtension = ts.clone(resolved); + withExtension.extension = ts.extensionFromPath(resolved.resolvedFileName); + return withExtension; + }); }; + } + else { + moduleResolutionCache = ts.createModuleResolutionCache(currentDirectory, function (x) { return host.getCanonicalFileName(x); }, options); + var loader_1 = function (moduleName, containingFile, redirectedReference) { return ts.resolveModuleName(moduleName, containingFile, options, host, moduleResolutionCache, redirectedReference).resolvedModule; }; // TODO: GH#18217 + actualResolveModuleNamesWorker = function (moduleNames, containingFile, _reusedNames, redirectedReference) { return loadWithLocalCache(ts.Debug.checkEachDefined(moduleNames), containingFile, redirectedReference, loader_1); }; + } + var actualResolveTypeReferenceDirectiveNamesWorker; + if (host.resolveTypeReferenceDirectives) { + actualResolveTypeReferenceDirectiveNamesWorker = function (typeDirectiveNames, containingFile, redirectedReference) { return host.resolveTypeReferenceDirectives(ts.Debug.checkEachDefined(typeDirectiveNames), containingFile, redirectedReference, options); }; + } + else { + var loader_2 = function (typesRef, containingFile, redirectedReference) { return ts.resolveTypeReferenceDirective(typesRef, containingFile, options, host, redirectedReference).resolvedTypeReferenceDirective; }; // TODO: GH#18217 + actualResolveTypeReferenceDirectiveNamesWorker = function (typeReferenceDirectiveNames, containingFile, redirectedReference) { return loadWithLocalCache(ts.Debug.checkEachDefined(typeReferenceDirectiveNames), containingFile, redirectedReference, loader_2); }; + } + // Map from a stringified PackageId to the source file with that id. + // Only one source file may have a given packageId. Others become redirects (see createRedirectSourceFile). + // `packageIdToSourceFile` is only used while building the program, while `sourceFileToPackageName` and `isSourceFileTargetOfRedirect` are kept around. + var packageIdToSourceFile = ts.createMap(); + // Maps from a SourceFile's `.path` to the name of the package it was imported with. + var sourceFileToPackageName = ts.createMap(); + // Key is a file name. Value is the (non-empty, or undefined) list of files that redirect to it. + var redirectTargetsMap = ts.createMultiMap(); + /** + * map with + * - SourceFile if present + * - false if sourceFile missing for source of project reference redirect + * - undefined otherwise + */ + var filesByName = ts.createMap(); + var missingFilePaths; + // stores 'filename -> file association' ignoring case + // used to track cases when two file names differ only in casing + var filesByNameIgnoreCase = host.useCaseSensitiveFileNames() ? ts.createMap() : undefined; + // A parallel array to projectReferences storing the results of reading in the referenced tsconfig files + var resolvedProjectReferences; + var projectReferenceRedirects; + var mapFromFileToProjectReferenceRedirects; + var mapFromToProjectReferenceRedirectSource; + var useSourceOfProjectReferenceRedirect = !!((_a = host.useSourceOfProjectReferenceRedirect) === null || _a === void 0 ? void 0 : _a.call(host)) && + !options.disableSourceOfProjectReferenceRedirect; + var _b = updateHostForUseSourceOfProjectReferenceRedirect({ + compilerHost: host, + useSourceOfProjectReferenceRedirect: useSourceOfProjectReferenceRedirect, + toPath: toPath, + getResolvedProjectReferences: getResolvedProjectReferences, + getSourceOfProjectReferenceRedirect: getSourceOfProjectReferenceRedirect, + forEachResolvedProjectReference: forEachResolvedProjectReference + }), onProgramCreateComplete = _b.onProgramCreateComplete, fileExists = _b.fileExists; + var shouldCreateNewSourceFile = shouldProgramCreateNewSourceFiles(oldProgram, options); + // We set `structuralIsReused` to `undefined` because `tryReuseStructureFromOldProgram` calls `tryReuseStructureFromOldProgram` which checks + // `structuralIsReused`, which would be a TDZ violation if it was not set in advance to `undefined`. + var structuralIsReused; + structuralIsReused = tryReuseStructureFromOldProgram(); // eslint-disable-line prefer-const + if (structuralIsReused !== 2 /* Completely */) { + processingDefaultLibFiles = []; + processingOtherFiles = []; + if (projectReferences) { + if (!resolvedProjectReferences) { + resolvedProjectReferences = projectReferences.map(parseProjectReferenceConfigFile); + } + if (rootNames.length) { + for (var _i = 0, resolvedProjectReferences_1 = resolvedProjectReferences; _i < resolvedProjectReferences_1.length; _i++) { + var parsedRef = resolvedProjectReferences_1[_i]; + if (!parsedRef) + continue; + var out = parsedRef.commandLine.options.outFile || parsedRef.commandLine.options.out; + if (useSourceOfProjectReferenceRedirect) { + if (out || ts.getEmitModuleKind(parsedRef.commandLine.options) === ts.ModuleKind.None) { + for (var _c = 0, _d = parsedRef.commandLine.fileNames; _c < _d.length; _c++) { + var fileName = _d[_c]; + processSourceFile(fileName, /*isDefaultLib*/ false, /*ignoreNoDefaultLib*/ false, /*packageId*/ undefined); + } + } + } + else { + if (out) { + processSourceFile(ts.changeExtension(out, ".d.ts"), /*isDefaultLib*/ false, /*ignoreNoDefaultLib*/ false, /*packageId*/ undefined); + } + else if (ts.getEmitModuleKind(parsedRef.commandLine.options) === ts.ModuleKind.None) { + for (var _e = 0, _f = parsedRef.commandLine.fileNames; _e < _f.length; _e++) { + var fileName = _f[_e]; + if (!ts.fileExtensionIs(fileName, ".d.ts" /* Dts */) && !ts.fileExtensionIs(fileName, ".json" /* Json */)) { + processSourceFile(ts.getOutputDeclarationFileName(fileName, parsedRef.commandLine, !host.useCaseSensitiveFileNames()), /*isDefaultLib*/ false, /*ignoreNoDefaultLib*/ false, /*packageId*/ undefined); + } + } + } + } + } + } + } + ts.forEach(rootNames, function (name) { return processRootFile(name, /*isDefaultLib*/ false, /*ignoreNoDefaultLib*/ false); }); + // load type declarations specified via 'types' argument or implicitly from types/ and node_modules/@types folders + var typeReferences = rootNames.length ? ts.getAutomaticTypeDirectiveNames(options, host) : ts.emptyArray; + if (typeReferences.length) { + // This containingFilename needs to match with the one used in managed-side + var containingDirectory = options.configFilePath ? ts.getDirectoryPath(options.configFilePath) : host.getCurrentDirectory(); + var containingFilename = ts.combinePaths(containingDirectory, ts.inferredTypesContainingFile); + var resolutions = resolveTypeReferenceDirectiveNamesWorker(typeReferences, containingFilename); + for (var i = 0; i < typeReferences.length; i++) { + processTypeReferenceDirective(typeReferences[i], resolutions[i]); + } + } + // Do not process the default library if: + // - The '--noLib' flag is used. + // - A 'no-default-lib' reference comment is encountered in + // processing the root files. + if (rootNames.length && !skipDefaultLib) { + // If '--lib' is not specified, include default library file according to '--target' + // otherwise, using options specified in '--lib' instead of '--target' default library file + var defaultLibraryFileName = getDefaultLibraryFileName(); + if (!options.lib && defaultLibraryFileName) { + processRootFile(defaultLibraryFileName, /*isDefaultLib*/ true, /*ignoreNoDefaultLib*/ false); + } + else { + ts.forEach(options.lib, function (libFileName) { + processRootFile(ts.combinePaths(defaultLibraryPath, libFileName), /*isDefaultLib*/ true, /*ignoreNoDefaultLib*/ false); + }); + } + } + missingFilePaths = ts.arrayFrom(ts.mapDefinedIterator(filesByName.entries(), function (_a) { + var path = _a[0], file = _a[1]; + return file === undefined ? path : undefined; + })); + files = ts.stableSort(processingDefaultLibFiles, compareDefaultLibFiles).concat(processingOtherFiles); + processingDefaultLibFiles = undefined; + processingOtherFiles = undefined; + } + ts.Debug.assert(!!missingFilePaths); + // Release any files we have acquired in the old program but are + // not part of the new program. + if (oldProgram && host.onReleaseOldSourceFile) { + var oldSourceFiles = oldProgram.getSourceFiles(); + for (var _g = 0, oldSourceFiles_1 = oldSourceFiles; _g < oldSourceFiles_1.length; _g++) { + var oldSourceFile = oldSourceFiles_1[_g]; + var newFile = getSourceFileByPath(oldSourceFile.resolvedPath); + if (shouldCreateNewSourceFile || !newFile || + // old file wasnt redirect but new file is + (oldSourceFile.resolvedPath === oldSourceFile.path && newFile.resolvedPath !== oldSourceFile.path)) { + host.onReleaseOldSourceFile(oldSourceFile, oldProgram.getCompilerOptions(), !!getSourceFileByPath(oldSourceFile.path)); + } + } + oldProgram.forEachResolvedProjectReference(function (resolvedProjectReference, resolvedProjectReferencePath) { + if (resolvedProjectReference && !getResolvedProjectReferenceByPath(resolvedProjectReferencePath)) { + host.onReleaseOldSourceFile(resolvedProjectReference.sourceFile, oldProgram.getCompilerOptions(), /*hasSourceFileByPath*/ false); + } + }); + } + // unconditionally set oldProgram to undefined to prevent it from being captured in closure + oldProgram = undefined; + var program = { + getRootFileNames: function () { return rootNames; }, + getSourceFile: getSourceFile, + getSourceFileByPath: getSourceFileByPath, + getSourceFiles: function () { return files; }, + getMissingFilePaths: function () { return missingFilePaths; }, + getRefFileMap: function () { return refFileMap; }, + getFilesByNameMap: function () { return filesByName; }, + getCompilerOptions: function () { return options; }, + getSyntacticDiagnostics: getSyntacticDiagnostics, + getOptionsDiagnostics: getOptionsDiagnostics, + getGlobalDiagnostics: getGlobalDiagnostics, + getSemanticDiagnostics: getSemanticDiagnostics, + getSuggestionDiagnostics: getSuggestionDiagnostics, + getDeclarationDiagnostics: getDeclarationDiagnostics, + getBindAndCheckDiagnostics: getBindAndCheckDiagnostics, + getProgramDiagnostics: getProgramDiagnostics, + getTypeChecker: getTypeChecker, + getClassifiableNames: getClassifiableNames, + getDiagnosticsProducingTypeChecker: getDiagnosticsProducingTypeChecker, + getCommonSourceDirectory: getCommonSourceDirectory, + emit: emit, + getCurrentDirectory: function () { return currentDirectory; }, + getNodeCount: function () { return getDiagnosticsProducingTypeChecker().getNodeCount(); }, + getIdentifierCount: function () { return getDiagnosticsProducingTypeChecker().getIdentifierCount(); }, + getSymbolCount: function () { return getDiagnosticsProducingTypeChecker().getSymbolCount(); }, + getTypeCount: function () { return getDiagnosticsProducingTypeChecker().getTypeCount(); }, + getInstantiationCount: function () { return getDiagnosticsProducingTypeChecker().getInstantiationCount(); }, + getRelationCacheSizes: function () { return getDiagnosticsProducingTypeChecker().getRelationCacheSizes(); }, + getFileProcessingDiagnostics: function () { return fileProcessingDiagnostics; }, + getResolvedTypeReferenceDirectives: function () { return resolvedTypeReferenceDirectives; }, + isSourceFileFromExternalLibrary: isSourceFileFromExternalLibrary, + isSourceFileDefaultLibrary: isSourceFileDefaultLibrary, + dropDiagnosticsProducingTypeChecker: dropDiagnosticsProducingTypeChecker, + getSourceFileFromReference: getSourceFileFromReference, + getLibFileFromReference: getLibFileFromReference, + sourceFileToPackageName: sourceFileToPackageName, + redirectTargetsMap: redirectTargetsMap, + isEmittedFile: isEmittedFile, + getConfigFileParsingDiagnostics: getConfigFileParsingDiagnostics, + getResolvedModuleWithFailedLookupLocationsFromCache: getResolvedModuleWithFailedLookupLocationsFromCache, + getProjectReferences: getProjectReferences, + getResolvedProjectReferences: getResolvedProjectReferences, + getProjectReferenceRedirect: getProjectReferenceRedirect, + getResolvedProjectReferenceToRedirect: getResolvedProjectReferenceToRedirect, + getResolvedProjectReferenceByPath: getResolvedProjectReferenceByPath, + forEachResolvedProjectReference: forEachResolvedProjectReference, + isSourceOfProjectReferenceRedirect: isSourceOfProjectReferenceRedirect, + emitBuildInfo: emitBuildInfo, + fileExists: fileExists, + getProbableSymlinks: getProbableSymlinks, + useCaseSensitiveFileNames: function () { return host.useCaseSensitiveFileNames(); }, + }; + onProgramCreateComplete(); + verifyCompilerOptions(); + ts.performance.mark("afterProgram"); + ts.performance.measure("Program", "beforeProgram", "afterProgram"); + return program; + function resolveModuleNamesWorker(moduleNames, containingFile, reusedNames, redirectedReference) { + ts.performance.mark("beforeResolveModule"); + var result = actualResolveModuleNamesWorker(moduleNames, containingFile, reusedNames, redirectedReference); + ts.performance.mark("afterResolveModule"); + ts.performance.measure("ResolveModule", "beforeResolveModule", "afterResolveModule"); + return result; + } + function resolveTypeReferenceDirectiveNamesWorker(typeDirectiveNames, containingFile, redirectedReference) { + ts.performance.mark("beforeResolveTypeReference"); + var result = actualResolveTypeReferenceDirectiveNamesWorker(typeDirectiveNames, containingFile, redirectedReference); + ts.performance.mark("afterResolveTypeReference"); + ts.performance.measure("ResolveTypeReference", "beforeResolveTypeReference", "afterResolveTypeReference"); + return result; + } + function compareDefaultLibFiles(a, b) { + return ts.compareValues(getDefaultLibFilePriority(a), getDefaultLibFilePriority(b)); + } + function getDefaultLibFilePriority(a) { + if (ts.containsPath(defaultLibraryPath, a.fileName, /*ignoreCase*/ false)) { + var basename = ts.getBaseFileName(a.fileName); + if (basename === "lib.d.ts" || basename === "lib.es6.d.ts") + return 0; + var name = ts.removeSuffix(ts.removePrefix(basename, "lib."), ".d.ts"); + var index = ts.libs.indexOf(name); + if (index !== -1) + return index + 1; + } + return ts.libs.length + 2; + } + function getResolvedModuleWithFailedLookupLocationsFromCache(moduleName, containingFile) { + return moduleResolutionCache && ts.resolveModuleNameFromCache(moduleName, containingFile, moduleResolutionCache); + } + function toPath(fileName) { + return ts.toPath(fileName, currentDirectory, getCanonicalFileName); + } + function getCommonSourceDirectory() { + if (commonSourceDirectory === undefined) { + var emittedFiles = ts.filter(files, function (file) { return ts.sourceFileMayBeEmitted(file, program); }); + if (options.rootDir && checkSourceFilesBelongToPath(emittedFiles, options.rootDir)) { + // If a rootDir is specified use it as the commonSourceDirectory + commonSourceDirectory = ts.getNormalizedAbsolutePath(options.rootDir, currentDirectory); + } + else if (options.composite && options.configFilePath) { + // Project compilations never infer their root from the input source paths + commonSourceDirectory = ts.getDirectoryPath(ts.normalizeSlashes(options.configFilePath)); + checkSourceFilesBelongToPath(emittedFiles, commonSourceDirectory); + } + else { + commonSourceDirectory = computeCommonSourceDirectory(emittedFiles); + } + if (commonSourceDirectory && commonSourceDirectory[commonSourceDirectory.length - 1] !== ts.directorySeparator) { + // Make sure directory path ends with directory separator so this string can directly + // used to replace with "" to get the relative path of the source file and the relative path doesn't + // start with / making it rooted path + commonSourceDirectory += ts.directorySeparator; + } + } + return commonSourceDirectory; + } + function getClassifiableNames() { + if (!classifiableNames) { + // Initialize a checker so that all our files are bound. + getTypeChecker(); + classifiableNames = ts.createUnderscoreEscapedMap(); + for (var _i = 0, files_2 = files; _i < files_2.length; _i++) { + var sourceFile = files_2[_i]; + ts.copyEntries(sourceFile.classifiableNames, classifiableNames); + } + } + return classifiableNames; + } + function resolveModuleNamesReusingOldState(moduleNames, containingFile, file) { + if (structuralIsReused === 0 /* Not */ && !file.ambientModuleNames.length) { + // If the old program state does not permit reusing resolutions and `file` does not contain locally defined ambient modules, + // the best we can do is fallback to the default logic. + return resolveModuleNamesWorker(moduleNames, containingFile, /*reusedNames*/ undefined, getResolvedProjectReferenceToRedirect(file.originalFileName)); + } + var oldSourceFile = oldProgram && oldProgram.getSourceFile(containingFile); + if (oldSourceFile !== file && file.resolvedModules) { + // `file` was created for the new program. + // + // We only set `file.resolvedModules` via work from the current function, + // so it is defined iff we already called the current function on `file`. + // That call happened no later than the creation of the `file` object, + // which per above occurred during the current program creation. + // Since we assume the filesystem does not change during program creation, + // it is safe to reuse resolutions from the earlier call. + var result_11 = []; + for (var _i = 0, moduleNames_1 = moduleNames; _i < moduleNames_1.length; _i++) { + var moduleName = moduleNames_1[_i]; + var resolvedModule = file.resolvedModules.get(moduleName); + result_11.push(resolvedModule); + } + return result_11; + } + // At this point, we know at least one of the following hold: + // - file has local declarations for ambient modules + // - old program state is available + // With this information, we can infer some module resolutions without performing resolution. + /** An ordered list of module names for which we cannot recover the resolution. */ + var unknownModuleNames; + /** + * The indexing of elements in this list matches that of `moduleNames`. + * + * Before combining results, result[i] is in one of the following states: + * * undefined: needs to be recomputed, + * * predictedToResolveToAmbientModuleMarker: known to be an ambient module. + * Needs to be reset to undefined before returning, + * * ResolvedModuleFull instance: can be reused. + */ + var result; + var reusedNames; + /** A transient placeholder used to mark predicted resolution in the result list. */ + var predictedToResolveToAmbientModuleMarker = {}; + for (var i = 0; i < moduleNames.length; i++) { + var moduleName = moduleNames[i]; + // If the source file is unchanged and doesnt have invalidated resolution, reuse the module resolutions + if (file === oldSourceFile && !hasInvalidatedResolution(oldSourceFile.path)) { + var oldResolvedModule = oldSourceFile && oldSourceFile.resolvedModules.get(moduleName); + if (oldResolvedModule) { + if (ts.isTraceEnabled(options, host)) { + ts.trace(host, ts.Diagnostics.Reusing_resolution_of_module_0_to_file_1_from_old_program, moduleName, containingFile); + } + (result || (result = new Array(moduleNames.length)))[i] = oldResolvedModule; + (reusedNames || (reusedNames = [])).push(moduleName); + continue; + } + } + // We know moduleName resolves to an ambient module provided that moduleName: + // - is in the list of ambient modules locally declared in the current source file. + // - resolved to an ambient module in the old program whose declaration is in an unmodified file + // (so the same module declaration will land in the new program) + var resolvesToAmbientModuleInNonModifiedFile = false; + if (ts.contains(file.ambientModuleNames, moduleName)) { + resolvesToAmbientModuleInNonModifiedFile = true; + if (ts.isTraceEnabled(options, host)) { + ts.trace(host, ts.Diagnostics.Module_0_was_resolved_as_locally_declared_ambient_module_in_file_1, moduleName, containingFile); + } + } + else { + resolvesToAmbientModuleInNonModifiedFile = moduleNameResolvesToAmbientModuleInNonModifiedFile(moduleName); + } + if (resolvesToAmbientModuleInNonModifiedFile) { + (result || (result = new Array(moduleNames.length)))[i] = predictedToResolveToAmbientModuleMarker; + } + else { + // Resolution failed in the old program, or resolved to an ambient module for which we can't reuse the result. + (unknownModuleNames || (unknownModuleNames = [])).push(moduleName); + } + } + var resolutions = unknownModuleNames && unknownModuleNames.length + ? resolveModuleNamesWorker(unknownModuleNames, containingFile, reusedNames, getResolvedProjectReferenceToRedirect(file.originalFileName)) + : ts.emptyArray; + // Combine results of resolutions and predicted results + if (!result) { + // There were no unresolved/ambient resolutions. + ts.Debug.assert(resolutions.length === moduleNames.length); + return resolutions; + } + var j = 0; + for (var i = 0; i < result.length; i++) { + if (result[i]) { + // `result[i]` is either a `ResolvedModuleFull` or a marker. + // If it is the former, we can leave it as is. + if (result[i] === predictedToResolveToAmbientModuleMarker) { + result[i] = undefined; // TODO: GH#18217 + } + } + else { + result[i] = resolutions[j]; + j++; + } + } + ts.Debug.assert(j === resolutions.length); + return result; + // If we change our policy of rechecking failed lookups on each program create, + // we should adjust the value returned here. + function moduleNameResolvesToAmbientModuleInNonModifiedFile(moduleName) { + var resolutionToFile = ts.getResolvedModule(oldSourceFile, moduleName); + var resolvedFile = resolutionToFile && oldProgram.getSourceFile(resolutionToFile.resolvedFileName); + if (resolutionToFile && resolvedFile) { + // In the old program, we resolved to an ambient module that was in the same + // place as we expected to find an actual module file. + // We actually need to return 'false' here even though this seems like a 'true' case + // because the normal module resolution algorithm will find this anyway. + return false; + } + // at least one of declarations should come from non-modified source file + var unmodifiedFile = ambientModuleNameToUnmodifiedFileName.get(moduleName); + if (!unmodifiedFile) { + return false; + } + if (ts.isTraceEnabled(options, host)) { + ts.trace(host, ts.Diagnostics.Module_0_was_resolved_as_ambient_module_declared_in_1_since_this_file_was_not_modified, moduleName, unmodifiedFile); + } + return true; + } + } + function canReuseProjectReferences() { + return !forEachProjectReference(oldProgram.getProjectReferences(), oldProgram.getResolvedProjectReferences(), function (oldResolvedRef, index, parent) { + var newRef = (parent ? parent.commandLine.projectReferences : projectReferences)[index]; + var newResolvedRef = parseProjectReferenceConfigFile(newRef); + if (oldResolvedRef) { + // Resolved project reference has gone missing or changed + return !newResolvedRef || newResolvedRef.sourceFile !== oldResolvedRef.sourceFile; + } + else { + // A previously-unresolved reference may be resolved now + return newResolvedRef !== undefined; + } + }, function (oldProjectReferences, parent) { + // If array of references is changed, we cant resue old program + var newReferences = parent ? getResolvedProjectReferenceByPath(parent.sourceFile.path).commandLine.projectReferences : projectReferences; + return !ts.arrayIsEqualTo(oldProjectReferences, newReferences, ts.projectReferenceIsEqualTo); + }); + } + function tryReuseStructureFromOldProgram() { + if (!oldProgram) { + return 0 /* Not */; + } + // check properties that can affect structure of the program or module resolution strategy + // if any of these properties has changed - structure cannot be reused + var oldOptions = oldProgram.getCompilerOptions(); + if (ts.changesAffectModuleResolution(oldOptions, options)) { + return oldProgram.structureIsReused = 0 /* Not */; + } + ts.Debug.assert(!(oldProgram.structureIsReused & (2 /* Completely */ | 1 /* SafeModules */))); + // there is an old program, check if we can reuse its structure + var oldRootNames = oldProgram.getRootFileNames(); + if (!ts.arrayIsEqualTo(oldRootNames, rootNames)) { + return oldProgram.structureIsReused = 0 /* Not */; + } + if (!ts.arrayIsEqualTo(options.types, oldOptions.types)) { + return oldProgram.structureIsReused = 0 /* Not */; + } + // Check if any referenced project tsconfig files are different + if (!canReuseProjectReferences()) { + return oldProgram.structureIsReused = 0 /* Not */; + } + if (projectReferences) { + resolvedProjectReferences = projectReferences.map(parseProjectReferenceConfigFile); + } + // check if program source files has changed in the way that can affect structure of the program + var newSourceFiles = []; + var modifiedSourceFiles = []; + oldProgram.structureIsReused = 2 /* Completely */; + // If the missing file paths are now present, it can change the progam structure, + // and hence cant reuse the structure. + // This is same as how we dont reuse the structure if one of the file from old program is now missing + if (oldProgram.getMissingFilePaths().some(function (missingFilePath) { return host.fileExists(missingFilePath); })) { + return oldProgram.structureIsReused = 0 /* Not */; + } + var oldSourceFiles = oldProgram.getSourceFiles(); + var SeenPackageName; + (function (SeenPackageName) { + SeenPackageName[SeenPackageName["Exists"] = 0] = "Exists"; + SeenPackageName[SeenPackageName["Modified"] = 1] = "Modified"; + })(SeenPackageName || (SeenPackageName = {})); + var seenPackageNames = ts.createMap(); + for (var _i = 0, oldSourceFiles_2 = oldSourceFiles; _i < oldSourceFiles_2.length; _i++) { + var oldSourceFile = oldSourceFiles_2[_i]; + var newSourceFile = host.getSourceFileByPath + ? host.getSourceFileByPath(oldSourceFile.fileName, oldSourceFile.resolvedPath, options.target, /*onError*/ undefined, shouldCreateNewSourceFile) + : host.getSourceFile(oldSourceFile.fileName, options.target, /*onError*/ undefined, shouldCreateNewSourceFile); // TODO: GH#18217 + if (!newSourceFile) { + return oldProgram.structureIsReused = 0 /* Not */; + } + ts.Debug.assert(!newSourceFile.redirectInfo, "Host should not return a redirect source file from `getSourceFile`"); + var fileChanged = void 0; + if (oldSourceFile.redirectInfo) { + // We got `newSourceFile` by path, so it is actually for the unredirected file. + // This lets us know if the unredirected file has changed. If it has we should break the redirect. + if (newSourceFile !== oldSourceFile.redirectInfo.unredirected) { + // Underlying file has changed. Might not redirect anymore. Must rebuild program. + return oldProgram.structureIsReused = 0 /* Not */; + } + fileChanged = false; + newSourceFile = oldSourceFile; // Use the redirect. + } + else if (oldProgram.redirectTargetsMap.has(oldSourceFile.path)) { + // If a redirected-to source file changes, the redirect may be broken. + if (newSourceFile !== oldSourceFile) { + return oldProgram.structureIsReused = 0 /* Not */; + } + fileChanged = false; + } + else { + fileChanged = newSourceFile !== oldSourceFile; + } + // Since the project references havent changed, its right to set originalFileName and resolvedPath here + newSourceFile.path = oldSourceFile.path; + newSourceFile.originalFileName = oldSourceFile.originalFileName; + newSourceFile.resolvedPath = oldSourceFile.resolvedPath; + newSourceFile.fileName = oldSourceFile.fileName; + var packageName = oldProgram.sourceFileToPackageName.get(oldSourceFile.path); + if (packageName !== undefined) { + // If there are 2 different source files for the same package name and at least one of them changes, + // they might become redirects. So we must rebuild the program. + var prevKind = seenPackageNames.get(packageName); + var newKind = fileChanged ? 1 /* Modified */ : 0 /* Exists */; + if ((prevKind !== undefined && newKind === 1 /* Modified */) || prevKind === 1 /* Modified */) { + return oldProgram.structureIsReused = 0 /* Not */; + } + seenPackageNames.set(packageName, newKind); + } + if (fileChanged) { + // The `newSourceFile` object was created for the new program. + if (!ts.arrayIsEqualTo(oldSourceFile.libReferenceDirectives, newSourceFile.libReferenceDirectives, fileReferenceIsEqualTo)) { + // 'lib' references has changed. Matches behavior in changesAffectModuleResolution + return oldProgram.structureIsReused = 0 /* Not */; + } + if (oldSourceFile.hasNoDefaultLib !== newSourceFile.hasNoDefaultLib) { + // value of no-default-lib has changed + // this will affect if default library is injected into the list of files + oldProgram.structureIsReused = 1 /* SafeModules */; + } + // check tripleslash references + if (!ts.arrayIsEqualTo(oldSourceFile.referencedFiles, newSourceFile.referencedFiles, fileReferenceIsEqualTo)) { + // tripleslash references has changed + oldProgram.structureIsReused = 1 /* SafeModules */; + } + // check imports and module augmentations + collectExternalModuleReferences(newSourceFile); + if (!ts.arrayIsEqualTo(oldSourceFile.imports, newSourceFile.imports, moduleNameIsEqualTo)) { + // imports has changed + oldProgram.structureIsReused = 1 /* SafeModules */; + } + if (!ts.arrayIsEqualTo(oldSourceFile.moduleAugmentations, newSourceFile.moduleAugmentations, moduleNameIsEqualTo)) { + // moduleAugmentations has changed + oldProgram.structureIsReused = 1 /* SafeModules */; + } + if ((oldSourceFile.flags & 3145728 /* PermanentlySetIncrementalFlags */) !== (newSourceFile.flags & 3145728 /* PermanentlySetIncrementalFlags */)) { + // dynamicImport has changed + oldProgram.structureIsReused = 1 /* SafeModules */; + } + if (!ts.arrayIsEqualTo(oldSourceFile.typeReferenceDirectives, newSourceFile.typeReferenceDirectives, fileReferenceIsEqualTo)) { + // 'types' references has changed + oldProgram.structureIsReused = 1 /* SafeModules */; + } + // tentatively approve the file + modifiedSourceFiles.push({ oldFile: oldSourceFile, newFile: newSourceFile }); + } + else if (hasInvalidatedResolution(oldSourceFile.path)) { + // 'module/types' references could have changed + oldProgram.structureIsReused = 1 /* SafeModules */; + // add file to the modified list so that we will resolve it later + modifiedSourceFiles.push({ oldFile: oldSourceFile, newFile: newSourceFile }); + } + // if file has passed all checks it should be safe to reuse it + newSourceFiles.push(newSourceFile); + } + if (oldProgram.structureIsReused !== 2 /* Completely */) { + return oldProgram.structureIsReused; + } + var modifiedFiles = modifiedSourceFiles.map(function (f) { return f.oldFile; }); + for (var _a = 0, oldSourceFiles_3 = oldSourceFiles; _a < oldSourceFiles_3.length; _a++) { + var oldFile = oldSourceFiles_3[_a]; + if (!ts.contains(modifiedFiles, oldFile)) { + for (var _b = 0, _c = oldFile.ambientModuleNames; _b < _c.length; _b++) { + var moduleName = _c[_b]; + ambientModuleNameToUnmodifiedFileName.set(moduleName, oldFile.fileName); + } + } + } + // try to verify results of module resolution + for (var _d = 0, modifiedSourceFiles_1 = modifiedSourceFiles; _d < modifiedSourceFiles_1.length; _d++) { + var _e = modifiedSourceFiles_1[_d], oldSourceFile = _e.oldFile, newSourceFile = _e.newFile; + var newSourceFilePath = ts.getNormalizedAbsolutePath(newSourceFile.originalFileName, currentDirectory); + var moduleNames = getModuleNames(newSourceFile); + var resolutions = resolveModuleNamesReusingOldState(moduleNames, newSourceFilePath, newSourceFile); + // ensure that module resolution results are still correct + var resolutionsChanged = ts.hasChangesInResolutions(moduleNames, resolutions, oldSourceFile.resolvedModules, ts.moduleResolutionIsEqualTo); + if (resolutionsChanged) { + oldProgram.structureIsReused = 1 /* SafeModules */; + newSourceFile.resolvedModules = ts.zipToMap(moduleNames, resolutions); + } + else { + newSourceFile.resolvedModules = oldSourceFile.resolvedModules; + } + if (resolveTypeReferenceDirectiveNamesWorker) { + // We lower-case all type references because npm automatically lowercases all packages. See GH#9824. + var typesReferenceDirectives = ts.map(newSourceFile.typeReferenceDirectives, function (ref) { return ts.toFileNameLowerCase(ref.fileName); }); + var resolutions_1 = resolveTypeReferenceDirectiveNamesWorker(typesReferenceDirectives, newSourceFilePath, getResolvedProjectReferenceToRedirect(newSourceFile.originalFileName)); + // ensure that types resolutions are still correct + var resolutionsChanged_1 = ts.hasChangesInResolutions(typesReferenceDirectives, resolutions_1, oldSourceFile.resolvedTypeReferenceDirectiveNames, ts.typeDirectiveIsEqualTo); + if (resolutionsChanged_1) { + oldProgram.structureIsReused = 1 /* SafeModules */; + newSourceFile.resolvedTypeReferenceDirectiveNames = ts.zipToMap(typesReferenceDirectives, resolutions_1); + } + else { + newSourceFile.resolvedTypeReferenceDirectiveNames = oldSourceFile.resolvedTypeReferenceDirectiveNames; + } + } + } + if (oldProgram.structureIsReused !== 2 /* Completely */) { + return oldProgram.structureIsReused; + } + if (host.hasChangedAutomaticTypeDirectiveNames) { + return oldProgram.structureIsReused = 1 /* SafeModules */; + } + missingFilePaths = oldProgram.getMissingFilePaths(); + refFileMap = oldProgram.getRefFileMap(); + // update fileName -> file mapping + ts.Debug.assert(newSourceFiles.length === oldProgram.getSourceFiles().length); + for (var _f = 0, newSourceFiles_1 = newSourceFiles; _f < newSourceFiles_1.length; _f++) { + var newSourceFile = newSourceFiles_1[_f]; + filesByName.set(newSourceFile.path, newSourceFile); + } + var oldFilesByNameMap = oldProgram.getFilesByNameMap(); + oldFilesByNameMap.forEach(function (oldFile, path) { + if (!oldFile) { + filesByName.set(path, oldFile); + return; + } + if (oldFile.path === path) { + // Set the file as found during node modules search if it was found that way in old progra, + if (oldProgram.isSourceFileFromExternalLibrary(oldFile)) { + sourceFilesFoundSearchingNodeModules.set(oldFile.path, true); + } + return; + } + filesByName.set(path, filesByName.get(oldFile.path)); + }); + files = newSourceFiles; + fileProcessingDiagnostics = oldProgram.getFileProcessingDiagnostics(); + for (var _g = 0, modifiedSourceFiles_2 = modifiedSourceFiles; _g < modifiedSourceFiles_2.length; _g++) { + var modifiedFile = modifiedSourceFiles_2[_g]; + fileProcessingDiagnostics.reattachFileDiagnostics(modifiedFile.newFile); + } + resolvedTypeReferenceDirectives = oldProgram.getResolvedTypeReferenceDirectives(); + sourceFileToPackageName = oldProgram.sourceFileToPackageName; + redirectTargetsMap = oldProgram.redirectTargetsMap; + return oldProgram.structureIsReused = 2 /* Completely */; + } + function getEmitHost(writeFileCallback) { + return { + getPrependNodes: getPrependNodes, + getCanonicalFileName: getCanonicalFileName, + getCommonSourceDirectory: program.getCommonSourceDirectory, + getCompilerOptions: program.getCompilerOptions, + getCurrentDirectory: function () { return currentDirectory; }, + getNewLine: function () { return host.getNewLine(); }, + getSourceFile: program.getSourceFile, + getSourceFileByPath: program.getSourceFileByPath, + getSourceFiles: program.getSourceFiles, + getLibFileFromReference: program.getLibFileFromReference, + isSourceFileFromExternalLibrary: isSourceFileFromExternalLibrary, + getResolvedProjectReferenceToRedirect: getResolvedProjectReferenceToRedirect, + getProjectReferenceRedirect: getProjectReferenceRedirect, + isSourceOfProjectReferenceRedirect: isSourceOfProjectReferenceRedirect, + getProbableSymlinks: getProbableSymlinks, + writeFile: writeFileCallback || (function (fileName, data, writeByteOrderMark, onError, sourceFiles) { return host.writeFile(fileName, data, writeByteOrderMark, onError, sourceFiles); }), + isEmitBlocked: isEmitBlocked, + readFile: function (f) { return host.readFile(f); }, + fileExists: function (f) { + // Use local caches + var path = toPath(f); + if (getSourceFileByPath(path)) + return true; + if (ts.contains(missingFilePaths, path)) + return false; + // Before falling back to the host + return host.fileExists(f); + }, + useCaseSensitiveFileNames: function () { return host.useCaseSensitiveFileNames(); }, + getProgramBuildInfo: function () { return program.getProgramBuildInfo && program.getProgramBuildInfo(); }, + getSourceFileFromReference: function (file, ref) { return program.getSourceFileFromReference(file, ref); }, + redirectTargetsMap: redirectTargetsMap, + }; + } + function emitBuildInfo(writeFileCallback) { + ts.Debug.assert(!options.out && !options.outFile); + ts.performance.mark("beforeEmit"); + var emitResult = ts.emitFiles(ts.notImplementedResolver, getEmitHost(writeFileCallback), + /*targetSourceFile*/ undefined, + /*transformers*/ ts.noTransformers, + /*emitOnlyDtsFiles*/ false, + /*onlyBuildInfo*/ true); + ts.performance.mark("afterEmit"); + ts.performance.measure("Emit", "beforeEmit", "afterEmit"); + return emitResult; + } + function getResolvedProjectReferences() { + return resolvedProjectReferences; + } + function getProjectReferences() { + return projectReferences; + } + function getPrependNodes() { + return createPrependNodes(projectReferences, function (_ref, index) { return resolvedProjectReferences[index].commandLine; }, function (fileName) { + var path = toPath(fileName); + var sourceFile = getSourceFileByPath(path); + return sourceFile ? sourceFile.text : filesByName.has(path) ? undefined : host.readFile(path); + }); + } + function isSourceFileFromExternalLibrary(file) { + return !!sourceFilesFoundSearchingNodeModules.get(file.path); + } + function isSourceFileDefaultLibrary(file) { + if (file.hasNoDefaultLib) { + return true; + } + if (!options.noLib) { + return false; + } + // If '--lib' is not specified, include default library file according to '--target' + // otherwise, using options specified in '--lib' instead of '--target' default library file + var equalityComparer = host.useCaseSensitiveFileNames() ? ts.equateStringsCaseSensitive : ts.equateStringsCaseInsensitive; + if (!options.lib) { + return equalityComparer(file.fileName, getDefaultLibraryFileName()); + } + else { + return ts.some(options.lib, function (libFileName) { return equalityComparer(file.fileName, ts.combinePaths(defaultLibraryPath, libFileName)); }); + } + } + function getDiagnosticsProducingTypeChecker() { + return diagnosticsProducingTypeChecker || (diagnosticsProducingTypeChecker = ts.createTypeChecker(program, /*produceDiagnostics:*/ true)); + } + function dropDiagnosticsProducingTypeChecker() { + diagnosticsProducingTypeChecker = undefined; + } + function getTypeChecker() { + return noDiagnosticsTypeChecker || (noDiagnosticsTypeChecker = ts.createTypeChecker(program, /*produceDiagnostics:*/ false)); + } + function emit(sourceFile, writeFileCallback, cancellationToken, emitOnlyDtsFiles, transformers, forceDtsEmit) { + return runWithCancellationToken(function () { return emitWorker(program, sourceFile, writeFileCallback, cancellationToken, emitOnlyDtsFiles, transformers, forceDtsEmit); }); + } + function isEmitBlocked(emitFileName) { + return hasEmitBlockingDiagnostics.has(toPath(emitFileName)); + } + function emitWorker(program, sourceFile, writeFileCallback, cancellationToken, emitOnlyDtsFiles, customTransformers, forceDtsEmit) { + if (!forceDtsEmit) { + var result = handleNoEmitOptions(program, sourceFile, cancellationToken); + if (result) + return result; + } + // Create the emit resolver outside of the "emitTime" tracking code below. That way + // any cost associated with it (like type checking) are appropriate associated with + // the type-checking counter. + // + // If the -out option is specified, we should not pass the source file to getEmitResolver. + // This is because in the -out scenario all files need to be emitted, and therefore all + // files need to be type checked. And the way to specify that all files need to be type + // checked is to not pass the file to getEmitResolver. + var emitResolver = getDiagnosticsProducingTypeChecker().getEmitResolver((options.outFile || options.out) ? undefined : sourceFile, cancellationToken); + ts.performance.mark("beforeEmit"); + var emitResult = ts.emitFiles(emitResolver, getEmitHost(writeFileCallback), sourceFile, ts.getTransformers(options, customTransformers, emitOnlyDtsFiles), emitOnlyDtsFiles, + /*onlyBuildInfo*/ false, forceDtsEmit); + ts.performance.mark("afterEmit"); + ts.performance.measure("Emit", "beforeEmit", "afterEmit"); + return emitResult; + } + function getSourceFile(fileName) { + return getSourceFileByPath(toPath(fileName)); + } + function getSourceFileByPath(path) { + return filesByName.get(path) || undefined; + } + function getDiagnosticsHelper(sourceFile, getDiagnostics, cancellationToken) { + if (sourceFile) { + return getDiagnostics(sourceFile, cancellationToken); + } + return ts.sortAndDeduplicateDiagnostics(ts.flatMap(program.getSourceFiles(), function (sourceFile) { + if (cancellationToken) { + cancellationToken.throwIfCancellationRequested(); + } + return getDiagnostics(sourceFile, cancellationToken); + })); + } + function getSyntacticDiagnostics(sourceFile, cancellationToken) { + return getDiagnosticsHelper(sourceFile, getSyntacticDiagnosticsForFile, cancellationToken); + } + function getSemanticDiagnostics(sourceFile, cancellationToken) { + return getDiagnosticsHelper(sourceFile, getSemanticDiagnosticsForFile, cancellationToken); + } + function getBindAndCheckDiagnostics(sourceFile, cancellationToken) { + return getBindAndCheckDiagnosticsForFile(sourceFile, cancellationToken); + } + function getProgramDiagnostics(sourceFile) { + if (ts.skipTypeChecking(sourceFile, options, program)) { + return ts.emptyArray; + } + var fileProcessingDiagnosticsInFile = fileProcessingDiagnostics.getDiagnostics(sourceFile.fileName); + var programDiagnosticsInFile = programDiagnostics.getDiagnostics(sourceFile.fileName); + return getMergedProgramDiagnostics(sourceFile, fileProcessingDiagnosticsInFile, programDiagnosticsInFile); + } + function getMergedProgramDiagnostics(sourceFile) { + var _a; + var allDiagnostics = []; + for (var _i = 1; _i < arguments.length; _i++) { + allDiagnostics[_i - 1] = arguments[_i]; + } + var flatDiagnostics = ts.flatten(allDiagnostics); + if (!((_a = sourceFile.commentDirectives) === null || _a === void 0 ? void 0 : _a.length)) { + return flatDiagnostics; + } + return getDiagnosticsWithPrecedingDirectives(sourceFile, sourceFile.commentDirectives, flatDiagnostics).diagnostics; + } + function getDeclarationDiagnostics(sourceFile, cancellationToken) { + var options = program.getCompilerOptions(); + // collect diagnostics from the program only once if either no source file was specified or out/outFile is set (bundled emit) + if (!sourceFile || options.out || options.outFile) { + return getDeclarationDiagnosticsWorker(sourceFile, cancellationToken); + } + else { + return getDiagnosticsHelper(sourceFile, getDeclarationDiagnosticsForFile, cancellationToken); + } + } + function getSyntacticDiagnosticsForFile(sourceFile) { + // For JavaScript files, we report semantic errors for using TypeScript-only + // constructs from within a JavaScript file as syntactic errors. + if (ts.isSourceFileJS(sourceFile)) { + if (!sourceFile.additionalSyntacticDiagnostics) { + sourceFile.additionalSyntacticDiagnostics = getJSSyntacticDiagnosticsForFile(sourceFile); + } + return ts.concatenate(sourceFile.additionalSyntacticDiagnostics, sourceFile.parseDiagnostics); + } + return sourceFile.parseDiagnostics; + } + function runWithCancellationToken(func) { + try { + return func(); + } + catch (e) { + if (e instanceof ts.OperationCanceledException) { + // We were canceled while performing the operation. Because our type checker + // might be a bad state, we need to throw it away. + // + // Note: we are overly aggressive here. We do not actually *have* to throw away + // the "noDiagnosticsTypeChecker". However, for simplicity, i'd like to keep + // the lifetimes of these two TypeCheckers the same. Also, we generally only + // cancel when the user has made a change anyways. And, in that case, we (the + // program instance) will get thrown away anyways. So trying to keep one of + // these type checkers alive doesn't serve much purpose. + noDiagnosticsTypeChecker = undefined; + diagnosticsProducingTypeChecker = undefined; + } + throw e; + } + } + function getSemanticDiagnosticsForFile(sourceFile, cancellationToken) { + return ts.concatenate(getBindAndCheckDiagnosticsForFile(sourceFile, cancellationToken), getProgramDiagnostics(sourceFile)); + } + function getBindAndCheckDiagnosticsForFile(sourceFile, cancellationToken) { + return getAndCacheDiagnostics(sourceFile, cancellationToken, cachedBindAndCheckDiagnosticsForFile, getBindAndCheckDiagnosticsForFileNoCache); + } + function getBindAndCheckDiagnosticsForFileNoCache(sourceFile, cancellationToken) { + return runWithCancellationToken(function () { + if (ts.skipTypeChecking(sourceFile, options, program)) { + return ts.emptyArray; + } + var typeChecker = getDiagnosticsProducingTypeChecker(); + ts.Debug.assert(!!sourceFile.bindDiagnostics); + var isCheckJs = ts.isCheckJsEnabledForFile(sourceFile, options); + var isTsNoCheck = !!sourceFile.checkJsDirective && sourceFile.checkJsDirective.enabled === false; + // By default, only type-check .ts, .tsx, 'Deferred' and 'External' files (external files are added by plugins) + var includeBindAndCheckDiagnostics = !isTsNoCheck && (sourceFile.scriptKind === 3 /* TS */ || sourceFile.scriptKind === 4 /* TSX */ || + sourceFile.scriptKind === 5 /* External */ || isCheckJs || sourceFile.scriptKind === 7 /* Deferred */); + var bindDiagnostics = includeBindAndCheckDiagnostics ? sourceFile.bindDiagnostics : ts.emptyArray; + var checkDiagnostics = includeBindAndCheckDiagnostics ? typeChecker.getDiagnostics(sourceFile, cancellationToken) : ts.emptyArray; + return getMergedBindAndCheckDiagnostics(sourceFile, bindDiagnostics, checkDiagnostics, isCheckJs ? sourceFile.jsDocDiagnostics : undefined); + }); + } + function getMergedBindAndCheckDiagnostics(sourceFile) { + var _a; + var allDiagnostics = []; + for (var _i = 1; _i < arguments.length; _i++) { + allDiagnostics[_i - 1] = arguments[_i]; + } + var flatDiagnostics = ts.flatten(allDiagnostics); + if (!((_a = sourceFile.commentDirectives) === null || _a === void 0 ? void 0 : _a.length)) { + return flatDiagnostics; + } + var _b = getDiagnosticsWithPrecedingDirectives(sourceFile, sourceFile.commentDirectives, flatDiagnostics), diagnostics = _b.diagnostics, directives = _b.directives; + for (var _c = 0, _d = directives.getUnusedExpectations(); _c < _d.length; _c++) { + var errorExpectation = _d[_c]; + diagnostics.push(ts.createDiagnosticForRange(sourceFile, errorExpectation.range, ts.Diagnostics.Unused_ts_expect_error_directive)); + } + return diagnostics; + } + /** + * Creates a map of comment directives along with the diagnostics immediately preceded by one of them. + * Comments that match to any of those diagnostics are marked as used. + */ + function getDiagnosticsWithPrecedingDirectives(sourceFile, commentDirectives, flatDiagnostics) { + // Diagnostics are only reported if there is no comment directive preceding them + // This will modify the directives map by marking "used" ones with a corresponding diagnostic + var directives = ts.createCommentDirectivesMap(sourceFile, commentDirectives); + var diagnostics = flatDiagnostics.filter(function (diagnostic) { return markPrecedingCommentDirectiveLine(diagnostic, directives) === -1; }); + return { diagnostics: diagnostics, directives: directives }; + } + function getSuggestionDiagnostics(sourceFile, cancellationToken) { + return runWithCancellationToken(function () { + return getDiagnosticsProducingTypeChecker().getSuggestionDiagnostics(sourceFile, cancellationToken); + }); + } + /** + * @returns The line index marked as preceding the diagnostic, or -1 if none was. + */ + function markPrecedingCommentDirectiveLine(diagnostic, directives) { + var file = diagnostic.file, start = diagnostic.start; + if (!file) { + return -1; + } + // Start out with the line just before the text + var lineStarts = ts.getLineStarts(file); + var line = ts.computeLineAndCharacterOfPosition(lineStarts, start).line - 1; // TODO: GH#18217 + while (line >= 0) { + // As soon as that line is known to have a comment directive, use that + if (directives.markUsed(line)) { + return line; + } + // Stop searching if the line is not empty and not a comment + var lineText = file.text.slice(lineStarts[line], lineStarts[line + 1]).trim(); + if (lineText !== "" && !/^(\s*)\/\/(.*)$/.test(lineText)) { + return -1; + } + line--; + } + return -1; + } + function getJSSyntacticDiagnosticsForFile(sourceFile) { + return runWithCancellationToken(function () { + var diagnostics = []; + walk(sourceFile, sourceFile); + ts.forEachChildRecursively(sourceFile, walk, walkArray); + return diagnostics; + function walk(node, parent) { + // Return directly from the case if the given node doesnt want to visit each child + // Otherwise break to visit each child + switch (parent.kind) { + case 156 /* Parameter */: + case 159 /* PropertyDeclaration */: + case 161 /* MethodDeclaration */: + if (parent.questionToken === node) { + diagnostics.push(createDiagnosticForNode(node, ts.Diagnostics.The_0_modifier_can_only_be_used_in_TypeScript_files, "?")); + return "skip"; + } + // falls through + case 160 /* MethodSignature */: + case 162 /* Constructor */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + case 201 /* FunctionExpression */: + case 244 /* FunctionDeclaration */: + case 202 /* ArrowFunction */: + case 242 /* VariableDeclaration */: + // type annotation + if (parent.type === node) { + diagnostics.push(createDiagnosticForNode(node, ts.Diagnostics.Type_annotations_can_only_be_used_in_TypeScript_files)); + return "skip"; + } + } + switch (node.kind) { + case 255 /* ImportClause */: + if (node.isTypeOnly) { + diagnostics.push(createDiagnosticForNode(node.parent, ts.Diagnostics._0_declarations_can_only_be_used_in_TypeScript_files, "import type")); + return "skip"; + } + break; + case 260 /* ExportDeclaration */: + if (node.isTypeOnly) { + diagnostics.push(createDiagnosticForNode(node, ts.Diagnostics._0_declarations_can_only_be_used_in_TypeScript_files, "export type")); + return "skip"; + } + break; + case 253 /* ImportEqualsDeclaration */: + diagnostics.push(createDiagnosticForNode(node, ts.Diagnostics.import_can_only_be_used_in_TypeScript_files)); + return "skip"; + case 259 /* ExportAssignment */: + if (node.isExportEquals) { + diagnostics.push(createDiagnosticForNode(node, ts.Diagnostics.export_can_only_be_used_in_TypeScript_files)); + return "skip"; + } + break; + case 279 /* HeritageClause */: + var heritageClause = node; + if (heritageClause.token === 113 /* ImplementsKeyword */) { + diagnostics.push(createDiagnosticForNode(node, ts.Diagnostics.implements_clauses_can_only_be_used_in_TypeScript_files)); + return "skip"; + } + break; + case 246 /* InterfaceDeclaration */: + var interfaceKeyword = ts.tokenToString(114 /* InterfaceKeyword */); + ts.Debug.assertIsDefined(interfaceKeyword); + diagnostics.push(createDiagnosticForNode(node, ts.Diagnostics._0_declarations_can_only_be_used_in_TypeScript_files, interfaceKeyword)); + return "skip"; + case 249 /* ModuleDeclaration */: + var moduleKeyword = node.flags & 16 /* Namespace */ ? ts.tokenToString(136 /* NamespaceKeyword */) : ts.tokenToString(135 /* ModuleKeyword */); + ts.Debug.assertIsDefined(moduleKeyword); + diagnostics.push(createDiagnosticForNode(node, ts.Diagnostics._0_declarations_can_only_be_used_in_TypeScript_files, moduleKeyword)); + return "skip"; + case 247 /* TypeAliasDeclaration */: + diagnostics.push(createDiagnosticForNode(node, ts.Diagnostics.Type_aliases_can_only_be_used_in_TypeScript_files)); + return "skip"; + case 248 /* EnumDeclaration */: + var enumKeyword = ts.Debug.checkDefined(ts.tokenToString(88 /* EnumKeyword */)); + diagnostics.push(createDiagnosticForNode(node, ts.Diagnostics._0_declarations_can_only_be_used_in_TypeScript_files, enumKeyword)); + return "skip"; + case 218 /* NonNullExpression */: + diagnostics.push(createDiagnosticForNode(node, ts.Diagnostics.Non_null_assertions_can_only_be_used_in_TypeScript_files)); + return "skip"; + case 217 /* AsExpression */: + diagnostics.push(createDiagnosticForNode(node.type, ts.Diagnostics.Type_assertion_expressions_can_only_be_used_in_TypeScript_files)); + return "skip"; + case 199 /* TypeAssertionExpression */: + ts.Debug.fail(); // Won't parse these in a JS file anyway, as they are interpreted as JSX. + } + } + function walkArray(nodes, parent) { + if (parent.decorators === nodes && !options.experimentalDecorators) { + diagnostics.push(createDiagnosticForNode(parent, ts.Diagnostics.Experimental_support_for_decorators_is_a_feature_that_is_subject_to_change_in_a_future_release_Set_the_experimentalDecorators_option_in_your_tsconfig_or_jsconfig_to_remove_this_warning)); + } + switch (parent.kind) { + case 245 /* ClassDeclaration */: + case 214 /* ClassExpression */: + case 161 /* MethodDeclaration */: + case 162 /* Constructor */: + case 163 /* GetAccessor */: + case 164 /* SetAccessor */: + case 201 /* FunctionExpression */: + case 244 /* FunctionDeclaration */: + case 202 /* ArrowFunction */: + // Check type parameters + if (nodes === parent.typeParameters) { + diagnostics.push(createDiagnosticForNodeArray(nodes, ts.Diagnostics.Type_parameter_declarations_can_only_be_used_in_TypeScript_files)); + return "skip"; + } + // falls through + case 225 /* VariableStatement */: + // Check modifiers + if (nodes === parent.modifiers) { + checkModifiers(parent.modifiers, parent.kind === 225 /* VariableStatement */); + return "skip"; + } + break; + case 159 /* PropertyDeclaration */: + // Check modifiers of property declaration + if (nodes === parent.modifiers) { + for (var _i = 0, _a = nodes; _i < _a.length; _i++) { + var modifier = _a[_i]; + if (modifier.kind !== 120 /* StaticKeyword */) { + diagnostics.push(createDiagnosticForNode(modifier, ts.Diagnostics.The_0_modifier_can_only_be_used_in_TypeScript_files, ts.tokenToString(modifier.kind))); + } + } + return "skip"; + } + break; + case 156 /* Parameter */: + // Check modifiers of parameter declaration + if (nodes === parent.modifiers) { + diagnostics.push(createDiagnosticForNodeArray(nodes, ts.Diagnostics.Parameter_modifiers_can_only_be_used_in_TypeScript_files)); + return "skip"; + } + break; + case 196 /* CallExpression */: + case 197 /* NewExpression */: + case 216 /* ExpressionWithTypeArguments */: + case 267 /* JsxSelfClosingElement */: + case 268 /* JsxOpeningElement */: + case 198 /* TaggedTemplateExpression */: + // Check type arguments + if (nodes === parent.typeArguments) { + diagnostics.push(createDiagnosticForNodeArray(nodes, ts.Diagnostics.Type_arguments_can_only_be_used_in_TypeScript_files)); + return "skip"; + } + break; + } + } + function checkModifiers(modifiers, isConstValid) { + for (var _i = 0, modifiers_1 = modifiers; _i < modifiers_1.length; _i++) { + var modifier = modifiers_1[_i]; + switch (modifier.kind) { + case 81 /* ConstKeyword */: + if (isConstValid) { + continue; + } + // to report error, + // falls through + case 119 /* PublicKeyword */: + case 117 /* PrivateKeyword */: + case 118 /* ProtectedKeyword */: + case 138 /* ReadonlyKeyword */: + case 130 /* DeclareKeyword */: + case 122 /* AbstractKeyword */: + diagnostics.push(createDiagnosticForNode(modifier, ts.Diagnostics.The_0_modifier_can_only_be_used_in_TypeScript_files, ts.tokenToString(modifier.kind))); + break; + // These are all legal modifiers. + case 120 /* StaticKeyword */: + case 89 /* ExportKeyword */: + case 84 /* DefaultKeyword */: + } + } + } + function createDiagnosticForNodeArray(nodes, message, arg0, arg1, arg2) { + var start = nodes.pos; + return ts.createFileDiagnostic(sourceFile, start, nodes.end - start, message, arg0, arg1, arg2); + } + // Since these are syntactic diagnostics, parent might not have been set + // this means the sourceFile cannot be infered from the node + function createDiagnosticForNode(node, message, arg0, arg1, arg2) { + return ts.createDiagnosticForNodeInSourceFile(sourceFile, node, message, arg0, arg1, arg2); + } + }); + } + function getDeclarationDiagnosticsWorker(sourceFile, cancellationToken) { + return getAndCacheDiagnostics(sourceFile, cancellationToken, cachedDeclarationDiagnosticsForFile, getDeclarationDiagnosticsForFileNoCache); + } + function getDeclarationDiagnosticsForFileNoCache(sourceFile, cancellationToken) { + return runWithCancellationToken(function () { + var resolver = getDiagnosticsProducingTypeChecker().getEmitResolver(sourceFile, cancellationToken); + // Don't actually write any files since we're just getting diagnostics. + return ts.getDeclarationDiagnostics(getEmitHost(ts.noop), resolver, sourceFile) || ts.emptyArray; + }); + } + function getAndCacheDiagnostics(sourceFile, cancellationToken, cache, getDiagnostics) { + var cachedResult = sourceFile + ? cache.perFile && cache.perFile.get(sourceFile.path) + : cache.allDiagnostics; + if (cachedResult) { + return cachedResult; + } + var result = getDiagnostics(sourceFile, cancellationToken); + if (sourceFile) { + if (!cache.perFile) { + cache.perFile = ts.createMap(); + } + cache.perFile.set(sourceFile.path, result); + } + else { + cache.allDiagnostics = result; + } + return result; + } + function getDeclarationDiagnosticsForFile(sourceFile, cancellationToken) { + return sourceFile.isDeclarationFile ? [] : getDeclarationDiagnosticsWorker(sourceFile, cancellationToken); + } + function getOptionsDiagnostics() { + return ts.sortAndDeduplicateDiagnostics(ts.concatenate(fileProcessingDiagnostics.getGlobalDiagnostics(), ts.concatenate(programDiagnostics.getGlobalDiagnostics(), getOptionsDiagnosticsOfConfigFile()))); + } + function getOptionsDiagnosticsOfConfigFile() { + if (!options.configFile) { + return ts.emptyArray; + } + var diagnostics = programDiagnostics.getDiagnostics(options.configFile.fileName); + forEachResolvedProjectReference(function (resolvedRef) { + if (resolvedRef) { + diagnostics = ts.concatenate(diagnostics, programDiagnostics.getDiagnostics(resolvedRef.sourceFile.fileName)); + } + }); + return diagnostics; + } + function getGlobalDiagnostics() { + return rootNames.length ? ts.sortAndDeduplicateDiagnostics(getDiagnosticsProducingTypeChecker().getGlobalDiagnostics().slice()) : ts.emptyArray; + } + function getConfigFileParsingDiagnostics() { + return configFileParsingDiagnostics || ts.emptyArray; + } + function processRootFile(fileName, isDefaultLib, ignoreNoDefaultLib) { + processSourceFile(ts.normalizePath(fileName), isDefaultLib, ignoreNoDefaultLib, /*packageId*/ undefined); + } + function fileReferenceIsEqualTo(a, b) { + return a.fileName === b.fileName; + } + function moduleNameIsEqualTo(a, b) { + return a.kind === 75 /* Identifier */ + ? b.kind === 75 /* Identifier */ && a.escapedText === b.escapedText + : b.kind === 10 /* StringLiteral */ && a.text === b.text; + } + function collectExternalModuleReferences(file) { + if (file.imports) { + return; + } + var isJavaScriptFile = ts.isSourceFileJS(file); + var isExternalModuleFile = ts.isExternalModule(file); + // file.imports may not be undefined if there exists dynamic import + var imports; + var moduleAugmentations; + var ambientModules; + // If we are importing helpers, we need to add a synthetic reference to resolve the + // helpers library. + if (options.importHelpers + && (options.isolatedModules || isExternalModuleFile) + && !file.isDeclarationFile) { + // synthesize 'import "tslib"' declaration + var externalHelpersModuleReference = ts.createLiteral(ts.externalHelpersModuleNameText); + var importDecl = ts.createImportDeclaration(/*decorators*/ undefined, /*modifiers*/ undefined, /*importClause*/ undefined, externalHelpersModuleReference); + ts.addEmitFlags(importDecl, 67108864 /* NeverApplyImportHelper */); + externalHelpersModuleReference.parent = importDecl; + importDecl.parent = file; + imports = [externalHelpersModuleReference]; + } + for (var _i = 0, _a = file.statements; _i < _a.length; _i++) { + var node = _a[_i]; + collectModuleReferences(node, /*inAmbientModule*/ false); + } + if ((file.flags & 1048576 /* PossiblyContainsDynamicImport */) || isJavaScriptFile) { + collectDynamicImportOrRequireCalls(file); + } + file.imports = imports || ts.emptyArray; + file.moduleAugmentations = moduleAugmentations || ts.emptyArray; + file.ambientModuleNames = ambientModules || ts.emptyArray; + return; + function collectModuleReferences(node, inAmbientModule) { + if (ts.isAnyImportOrReExport(node)) { + var moduleNameExpr = ts.getExternalModuleName(node); + // TypeScript 1.0 spec (April 2014): 12.1.6 + // An ExternalImportDeclaration in an AmbientExternalModuleDeclaration may reference other external modules + // only through top - level external module names. Relative external module names are not permitted. + if (moduleNameExpr && ts.isStringLiteral(moduleNameExpr) && moduleNameExpr.text && (!inAmbientModule || !ts.isExternalModuleNameRelative(moduleNameExpr.text))) { + imports = ts.append(imports, moduleNameExpr); + } + } + else if (ts.isModuleDeclaration(node)) { + if (ts.isAmbientModule(node) && (inAmbientModule || ts.hasModifier(node, 2 /* Ambient */) || file.isDeclarationFile)) { + var nameText = ts.getTextOfIdentifierOrLiteral(node.name); + // Ambient module declarations can be interpreted as augmentations for some existing external modules. + // This will happen in two cases: + // - if current file is external module then module augmentation is a ambient module declaration defined in the top level scope + // - if current file is not external module then module augmentation is an ambient module declaration with non-relative module name + // immediately nested in top level ambient module declaration . + if (isExternalModuleFile || (inAmbientModule && !ts.isExternalModuleNameRelative(nameText))) { + (moduleAugmentations || (moduleAugmentations = [])).push(node.name); + } + else if (!inAmbientModule) { + if (file.isDeclarationFile) { + // for global .d.ts files record name of ambient module + (ambientModules || (ambientModules = [])).push(nameText); + } + // An AmbientExternalModuleDeclaration declares an external module. + // This type of declaration is permitted only in the global module. + // The StringLiteral must specify a top - level external module name. + // Relative external module names are not permitted + // NOTE: body of ambient module is always a module block, if it exists + var body = node.body; + if (body) { + for (var _i = 0, _a = body.statements; _i < _a.length; _i++) { + var statement = _a[_i]; + collectModuleReferences(statement, /*inAmbientModule*/ true); + } + } + } + } + } + } + function collectDynamicImportOrRequireCalls(file) { + var r = /import|require/g; + while (r.exec(file.text) !== null) { // eslint-disable-line no-null/no-null + var node = getNodeAtPosition(file, r.lastIndex); + if (ts.isRequireCall(node, /*checkArgumentIsStringLiteralLike*/ true)) { + imports = ts.append(imports, node.arguments[0]); + } + // we have to check the argument list has length of 1. We will still have to process these even though we have parsing error. + else if (ts.isImportCall(node) && node.arguments.length === 1 && ts.isStringLiteralLike(node.arguments[0])) { + imports = ts.append(imports, node.arguments[0]); + } + else if (ts.isLiteralImportTypeNode(node)) { + imports = ts.append(imports, node.argument.literal); + } + } + } + /** Returns a token if position is in [start-of-leading-trivia, end), includes JSDoc only in JS files */ + function getNodeAtPosition(sourceFile, position) { + var current = sourceFile; + var getContainingChild = function (child) { + if (child.pos <= position && (position < child.end || (position === child.end && (child.kind === 1 /* EndOfFileToken */)))) { + return child; + } + }; + while (true) { + var child = isJavaScriptFile && ts.hasJSDocNodes(current) && ts.forEach(current.jsDoc, getContainingChild) || ts.forEachChild(current, getContainingChild); + if (!child) { + return current; + } + current = child; + } + } + } + function getLibFileFromReference(ref) { + var libName = ts.toFileNameLowerCase(ref.fileName); + var libFileName = ts.libMap.get(libName); + if (libFileName) { + return getSourceFile(ts.combinePaths(defaultLibraryPath, libFileName)); + } + } + /** This should have similar behavior to 'processSourceFile' without diagnostics or mutation. */ + function getSourceFileFromReference(referencingFile, ref) { + return getSourceFileFromReferenceWorker(resolveTripleslashReference(ref.fileName, referencingFile.fileName), function (fileName) { return filesByName.get(toPath(fileName)) || undefined; }); + } + function getSourceFileFromReferenceWorker(fileName, getSourceFile, fail, refFile) { + if (ts.hasExtension(fileName)) { + var canonicalFileName_1 = host.getCanonicalFileName(fileName); + if (!options.allowNonTsExtensions && !ts.forEach(supportedExtensionsWithJsonIfResolveJsonModule, function (extension) { return ts.fileExtensionIs(canonicalFileName_1, extension); })) { + if (fail) { + if (ts.hasJSFileExtension(canonicalFileName_1)) { + fail(ts.Diagnostics.File_0_is_a_JavaScript_file_Did_you_mean_to_enable_the_allowJs_option, fileName); + } + else { + fail(ts.Diagnostics.File_0_has_an_unsupported_extension_The_only_supported_extensions_are_1, fileName, "'" + supportedExtensions.join("', '") + "'"); + } + } + return undefined; + } + var sourceFile = getSourceFile(fileName); + if (fail) { + if (!sourceFile) { + var redirect = getProjectReferenceRedirect(fileName); + if (redirect) { + fail(ts.Diagnostics.Output_file_0_has_not_been_built_from_source_file_1, redirect, fileName); + } + else { + fail(ts.Diagnostics.File_0_not_found, fileName); + } + } + else if (refFile && canonicalFileName_1 === host.getCanonicalFileName(refFile.fileName)) { + fail(ts.Diagnostics.A_file_cannot_have_a_reference_to_itself); + } + } + return sourceFile; + } + else { + var sourceFileNoExtension = options.allowNonTsExtensions && getSourceFile(fileName); + if (sourceFileNoExtension) + return sourceFileNoExtension; + if (fail && options.allowNonTsExtensions) { + fail(ts.Diagnostics.File_0_not_found, fileName); + return undefined; + } + var sourceFileWithAddedExtension = ts.forEach(supportedExtensions, function (extension) { return getSourceFile(fileName + extension); }); + if (fail && !sourceFileWithAddedExtension) + fail(ts.Diagnostics.Could_not_resolve_the_path_0_with_the_extensions_Colon_1, fileName, "'" + supportedExtensions.join("', '") + "'"); + return sourceFileWithAddedExtension; + } + } + /** This has side effects through `findSourceFile`. */ + function processSourceFile(fileName, isDefaultLib, ignoreNoDefaultLib, packageId, refFile) { + getSourceFileFromReferenceWorker(fileName, function (fileName) { return findSourceFile(fileName, toPath(fileName), isDefaultLib, ignoreNoDefaultLib, refFile, packageId); }, // TODO: GH#18217 + function (diagnostic) { + var args = []; + for (var _i = 1; _i < arguments.length; _i++) { + args[_i - 1] = arguments[_i]; + } + return fileProcessingDiagnostics.add(createRefFileDiagnostic.apply(void 0, __spreadArrays([refFile, diagnostic], args))); + }, refFile && refFile.file); + } + function reportFileNamesDifferOnlyInCasingError(fileName, existingFile, refFile) { + var refs = !refFile ? refFileMap && refFileMap.get(existingFile.path) : undefined; + var refToReportErrorOn = refs && ts.find(refs, function (ref) { return ref.referencedFileName === existingFile.fileName; }); + fileProcessingDiagnostics.add(refToReportErrorOn ? + createFileDiagnosticAtReference(refToReportErrorOn, ts.Diagnostics.Already_included_file_name_0_differs_from_file_name_1_only_in_casing, existingFile.fileName, fileName) : + createRefFileDiagnostic(refFile, ts.Diagnostics.File_name_0_differs_from_already_included_file_name_1_only_in_casing, fileName, existingFile.fileName)); + } + function createRedirectSourceFile(redirectTarget, unredirected, fileName, path, resolvedPath, originalFileName) { + var redirect = Object.create(redirectTarget); + redirect.fileName = fileName; + redirect.path = path; + redirect.resolvedPath = resolvedPath; + redirect.originalFileName = originalFileName; + redirect.redirectInfo = { redirectTarget: redirectTarget, unredirected: unredirected }; + sourceFilesFoundSearchingNodeModules.set(path, currentNodeModulesDepth > 0); + Object.defineProperties(redirect, { + id: { + get: function () { return this.redirectInfo.redirectTarget.id; }, + set: function (value) { this.redirectInfo.redirectTarget.id = value; }, + }, + symbol: { + get: function () { return this.redirectInfo.redirectTarget.symbol; }, + set: function (value) { this.redirectInfo.redirectTarget.symbol = value; }, + }, + }); + return redirect; + } + // Get source file from normalized fileName + function findSourceFile(fileName, path, isDefaultLib, ignoreNoDefaultLib, refFile, packageId) { + if (useSourceOfProjectReferenceRedirect) { + var source = getSourceOfProjectReferenceRedirect(fileName); + // If preserveSymlinks is true, module resolution wont jump the symlink + // but the resolved real path may be the .d.ts from project reference + // Note:: Currently we try the real path only if the + // file is from node_modules to avoid having to run real path on all file paths + if (!source && + host.realpath && + options.preserveSymlinks && + ts.isDeclarationFileName(fileName) && + ts.stringContains(fileName, ts.nodeModulesPathPart)) { + var realPath = host.realpath(fileName); + if (realPath !== fileName) + source = getSourceOfProjectReferenceRedirect(realPath); + } + if (source) { + var file_1 = ts.isString(source) ? + findSourceFile(source, toPath(source), isDefaultLib, ignoreNoDefaultLib, refFile, packageId) : + undefined; + if (file_1) + addFileToFilesByName(file_1, path, /*redirectedPath*/ undefined); + return file_1; + } + } + var originalFileName = fileName; + if (filesByName.has(path)) { + var file_2 = filesByName.get(path); + addFileToRefFileMap(fileName, file_2 || undefined, refFile); + // try to check if we've already seen this file but with a different casing in path + // NOTE: this only makes sense for case-insensitive file systems, and only on files which are not redirected + if (file_2 && options.forceConsistentCasingInFileNames) { + var checkedName = file_2.fileName; + var isRedirect = toPath(checkedName) !== toPath(fileName); + if (isRedirect) { + fileName = getProjectReferenceRedirect(fileName) || fileName; + } + // Check if it differs only in drive letters its ok to ignore that error: + var checkedAbsolutePath = ts.getNormalizedAbsolutePathWithoutRoot(checkedName, currentDirectory); + var inputAbsolutePath = ts.getNormalizedAbsolutePathWithoutRoot(fileName, currentDirectory); + if (checkedAbsolutePath !== inputAbsolutePath) { + reportFileNamesDifferOnlyInCasingError(fileName, file_2, refFile); + } + } + // If the file was previously found via a node_modules search, but is now being processed as a root file, + // then everything it sucks in may also be marked incorrectly, and needs to be checked again. + if (file_2 && sourceFilesFoundSearchingNodeModules.get(file_2.path) && currentNodeModulesDepth === 0) { + sourceFilesFoundSearchingNodeModules.set(file_2.path, false); + if (!options.noResolve) { + processReferencedFiles(file_2, isDefaultLib); + processTypeReferenceDirectives(file_2); + } + if (!options.noLib) { + processLibReferenceDirectives(file_2); + } + modulesWithElidedImports.set(file_2.path, false); + processImportedModules(file_2); + } + // See if we need to reprocess the imports due to prior skipped imports + else if (file_2 && modulesWithElidedImports.get(file_2.path)) { + if (currentNodeModulesDepth < maxNodeModuleJsDepth) { + modulesWithElidedImports.set(file_2.path, false); + processImportedModules(file_2); + } + } + return file_2 || undefined; + } + var redirectedPath; + if (refFile && !useSourceOfProjectReferenceRedirect) { + var redirectProject = getProjectReferenceRedirectProject(fileName); + if (redirectProject) { + if (redirectProject.commandLine.options.outFile || redirectProject.commandLine.options.out) { + // Shouldnt create many to 1 mapping file in --out scenario + return undefined; + } + var redirect = getProjectReferenceOutputName(redirectProject, fileName); + fileName = redirect; + // Once we start redirecting to a file, we can potentially come back to it + // via a back-reference from another file in the .d.ts folder. If that happens we'll + // end up trying to add it to the program *again* because we were tracking it via its + // original (un-redirected) name. So we have to map both the original path and the redirected path + // to the source file we're about to find/create + redirectedPath = toPath(redirect); + } + } + // We haven't looked for this file, do so now and cache result + var file = host.getSourceFile(fileName, options.target, function (hostErrorMessage) { return fileProcessingDiagnostics.add(createRefFileDiagnostic(refFile, ts.Diagnostics.Cannot_read_file_0_Colon_1, fileName, hostErrorMessage)); }, shouldCreateNewSourceFile); + if (packageId) { + var packageIdKey = ts.packageIdToString(packageId); + var fileFromPackageId = packageIdToSourceFile.get(packageIdKey); + if (fileFromPackageId) { + // Some other SourceFile already exists with this package name and version. + // Instead of creating a duplicate, just redirect to the existing one. + var dupFile = createRedirectSourceFile(fileFromPackageId, file, fileName, path, toPath(fileName), originalFileName); // TODO: GH#18217 + redirectTargetsMap.add(fileFromPackageId.path, fileName); + addFileToFilesByName(dupFile, path, redirectedPath); + sourceFileToPackageName.set(path, packageId.name); + processingOtherFiles.push(dupFile); + return dupFile; + } + else if (file) { + // This is the first source file to have this packageId. + packageIdToSourceFile.set(packageIdKey, file); + sourceFileToPackageName.set(path, packageId.name); + } + } + addFileToFilesByName(file, path, redirectedPath); + if (file) { + sourceFilesFoundSearchingNodeModules.set(path, currentNodeModulesDepth > 0); + file.fileName = fileName; // Ensure that source file has same name as what we were looking for + file.path = path; + file.resolvedPath = toPath(fileName); + file.originalFileName = originalFileName; + addFileToRefFileMap(fileName, file, refFile); + if (host.useCaseSensitiveFileNames()) { + var pathLowerCase = ts.toFileNameLowerCase(path); + // for case-sensitive file systems check if we've already seen some file with similar filename ignoring case + var existingFile = filesByNameIgnoreCase.get(pathLowerCase); + if (existingFile) { + reportFileNamesDifferOnlyInCasingError(fileName, existingFile, refFile); + } + else { + filesByNameIgnoreCase.set(pathLowerCase, file); + } + } + skipDefaultLib = skipDefaultLib || (file.hasNoDefaultLib && !ignoreNoDefaultLib); + if (!options.noResolve) { + processReferencedFiles(file, isDefaultLib); + processTypeReferenceDirectives(file); + } + if (!options.noLib) { + processLibReferenceDirectives(file); + } + // always process imported modules to record module name resolutions + processImportedModules(file); + if (isDefaultLib) { + processingDefaultLibFiles.push(file); + } + else { + processingOtherFiles.push(file); + } + } + return file; + } + function addFileToRefFileMap(referencedFileName, file, refFile) { + if (refFile && file) { + (refFileMap || (refFileMap = ts.createMultiMap())).add(file.path, { + referencedFileName: referencedFileName, + kind: refFile.kind, + index: refFile.index, + file: refFile.file.path + }); + } + } + function addFileToFilesByName(file, path, redirectedPath) { + if (redirectedPath) { + filesByName.set(redirectedPath, file); + filesByName.set(path, file || false); + } + else { + filesByName.set(path, file); + } + } + function getProjectReferenceRedirect(fileName) { + var referencedProject = getProjectReferenceRedirectProject(fileName); + return referencedProject && getProjectReferenceOutputName(referencedProject, fileName); + } + function getProjectReferenceRedirectProject(fileName) { + // Ignore dts or any json files + if (!resolvedProjectReferences || !resolvedProjectReferences.length || ts.fileExtensionIs(fileName, ".d.ts" /* Dts */) || ts.fileExtensionIs(fileName, ".json" /* Json */)) { + return undefined; + } + // If this file is produced by a referenced project, we need to rewrite it to + // look in the output folder of the referenced project rather than the input + return getResolvedProjectReferenceToRedirect(fileName); + } + function getProjectReferenceOutputName(referencedProject, fileName) { + var out = referencedProject.commandLine.options.outFile || referencedProject.commandLine.options.out; + return out ? + ts.changeExtension(out, ".d.ts" /* Dts */) : + ts.getOutputDeclarationFileName(fileName, referencedProject.commandLine, !host.useCaseSensitiveFileNames()); + } + /** + * Get the referenced project if the file is input file from that reference project + */ + function getResolvedProjectReferenceToRedirect(fileName) { + if (mapFromFileToProjectReferenceRedirects === undefined) { + mapFromFileToProjectReferenceRedirects = ts.createMap(); + forEachResolvedProjectReference(function (referencedProject, referenceProjectPath) { + // not input file from the referenced project, ignore + if (referencedProject && + toPath(options.configFilePath) !== referenceProjectPath) { + referencedProject.commandLine.fileNames.forEach(function (f) { + return mapFromFileToProjectReferenceRedirects.set(toPath(f), referenceProjectPath); + }); + } + }); + } + var referencedProjectPath = mapFromFileToProjectReferenceRedirects.get(toPath(fileName)); + return referencedProjectPath && getResolvedProjectReferenceByPath(referencedProjectPath); + } + function forEachResolvedProjectReference(cb) { + return forEachProjectReference(projectReferences, resolvedProjectReferences, function (resolvedRef, index, parent) { + var ref = (parent ? parent.commandLine.projectReferences : projectReferences)[index]; + var resolvedRefPath = toPath(resolveProjectReferencePath(ref)); + return cb(resolvedRef, resolvedRefPath); + }); + } + function getSourceOfProjectReferenceRedirect(file) { + if (!ts.isDeclarationFileName(file)) + return undefined; + if (mapFromToProjectReferenceRedirectSource === undefined) { + mapFromToProjectReferenceRedirectSource = ts.createMap(); + forEachResolvedProjectReference(function (resolvedRef) { + if (resolvedRef) { + var out = resolvedRef.commandLine.options.outFile || resolvedRef.commandLine.options.out; + if (out) { + // Dont know which source file it means so return true? + var outputDts = ts.changeExtension(out, ".d.ts" /* Dts */); + mapFromToProjectReferenceRedirectSource.set(toPath(outputDts), true); + } + else { + ts.forEach(resolvedRef.commandLine.fileNames, function (fileName) { + if (!ts.fileExtensionIs(fileName, ".d.ts" /* Dts */) && !ts.fileExtensionIs(fileName, ".json" /* Json */)) { + var outputDts = ts.getOutputDeclarationFileName(fileName, resolvedRef.commandLine, host.useCaseSensitiveFileNames()); + mapFromToProjectReferenceRedirectSource.set(toPath(outputDts), fileName); + } + }); + } + } + }); + } + return mapFromToProjectReferenceRedirectSource.get(toPath(file)); + } + function isSourceOfProjectReferenceRedirect(fileName) { + return useSourceOfProjectReferenceRedirect && !!getResolvedProjectReferenceToRedirect(fileName); + } + function forEachProjectReference(projectReferences, resolvedProjectReferences, cbResolvedRef, cbRef) { + var seenResolvedRefs; + return worker(projectReferences, resolvedProjectReferences, /*parent*/ undefined, cbResolvedRef, cbRef); + function worker(projectReferences, resolvedProjectReferences, parent, cbResolvedRef, cbRef) { + // Visit project references first + if (cbRef) { + var result = cbRef(projectReferences, parent); + if (result) { + return result; + } + } + return ts.forEach(resolvedProjectReferences, function (resolvedRef, index) { + if (ts.contains(seenResolvedRefs, resolvedRef)) { + // ignore recursives + return undefined; + } + var result = cbResolvedRef(resolvedRef, index, parent); + if (result) { + return result; + } + if (!resolvedRef) + return undefined; + (seenResolvedRefs || (seenResolvedRefs = [])).push(resolvedRef); + return worker(resolvedRef.commandLine.projectReferences, resolvedRef.references, resolvedRef, cbResolvedRef, cbRef); + }); + } + } + function getResolvedProjectReferenceByPath(projectReferencePath) { + if (!projectReferenceRedirects) { + return undefined; + } + return projectReferenceRedirects.get(projectReferencePath) || undefined; + } + function processReferencedFiles(file, isDefaultLib) { + ts.forEach(file.referencedFiles, function (ref, index) { + var referencedFileName = resolveTripleslashReference(ref.fileName, file.originalFileName); + processSourceFile(referencedFileName, isDefaultLib, + /*ignoreNoDefaultLib*/ false, + /*packageId*/ undefined, { + kind: ts.RefFileKind.ReferenceFile, + index: index, + file: file, + pos: ref.pos, + end: ref.end + }); + }); + } + function processTypeReferenceDirectives(file) { + // We lower-case all type references because npm automatically lowercases all packages. See GH#9824. + var typeDirectives = ts.map(file.typeReferenceDirectives, function (ref) { return ts.toFileNameLowerCase(ref.fileName); }); + if (!typeDirectives) { + return; + } + var resolutions = resolveTypeReferenceDirectiveNamesWorker(typeDirectives, file.originalFileName, getResolvedProjectReferenceToRedirect(file.originalFileName)); + for (var i = 0; i < typeDirectives.length; i++) { + var ref = file.typeReferenceDirectives[i]; + var resolvedTypeReferenceDirective = resolutions[i]; + // store resolved type directive on the file + var fileName = ts.toFileNameLowerCase(ref.fileName); + ts.setResolvedTypeReferenceDirective(file, fileName, resolvedTypeReferenceDirective); + processTypeReferenceDirective(fileName, resolvedTypeReferenceDirective, { + kind: ts.RefFileKind.TypeReferenceDirective, + index: i, + file: file, + pos: ref.pos, + end: ref.end + }); + } + } + function processTypeReferenceDirective(typeReferenceDirective, resolvedTypeReferenceDirective, refFile) { + // If we already found this library as a primary reference - nothing to do + var previousResolution = resolvedTypeReferenceDirectives.get(typeReferenceDirective); + if (previousResolution && previousResolution.primary) { + return; + } + var saveResolution = true; + if (resolvedTypeReferenceDirective) { + if (resolvedTypeReferenceDirective.isExternalLibraryImport) + currentNodeModulesDepth++; + if (resolvedTypeReferenceDirective.primary) { + // resolved from the primary path + processSourceFile(resolvedTypeReferenceDirective.resolvedFileName, /*isDefaultLib*/ false, /*ignoreNoDefaultLib*/ false, resolvedTypeReferenceDirective.packageId, refFile); // TODO: GH#18217 + } + else { + // If we already resolved to this file, it must have been a secondary reference. Check file contents + // for sameness and possibly issue an error + if (previousResolution) { + // Don't bother reading the file again if it's the same file. + if (resolvedTypeReferenceDirective.resolvedFileName !== previousResolution.resolvedFileName) { + var otherFileText = host.readFile(resolvedTypeReferenceDirective.resolvedFileName); + var existingFile_1 = getSourceFile(previousResolution.resolvedFileName); + if (otherFileText !== existingFile_1.text) { + // Try looking up ref for original file + var refs = !refFile ? refFileMap && refFileMap.get(existingFile_1.path) : undefined; + var refToReportErrorOn = refs && ts.find(refs, function (ref) { return ref.referencedFileName === existingFile_1.fileName; }); + fileProcessingDiagnostics.add(refToReportErrorOn ? + createFileDiagnosticAtReference(refToReportErrorOn, ts.Diagnostics.Conflicting_definitions_for_0_found_at_1_and_2_Consider_installing_a_specific_version_of_this_library_to_resolve_the_conflict, typeReferenceDirective, resolvedTypeReferenceDirective.resolvedFileName, previousResolution.resolvedFileName) : + createRefFileDiagnostic(refFile, ts.Diagnostics.Conflicting_definitions_for_0_found_at_1_and_2_Consider_installing_a_specific_version_of_this_library_to_resolve_the_conflict, typeReferenceDirective, resolvedTypeReferenceDirective.resolvedFileName, previousResolution.resolvedFileName)); + } + } + // don't overwrite previous resolution result + saveResolution = false; + } + else { + // First resolution of this library + processSourceFile(resolvedTypeReferenceDirective.resolvedFileName, /*isDefaultLib*/ false, /*ignoreNoDefaultLib*/ false, resolvedTypeReferenceDirective.packageId, refFile); + } + } + if (resolvedTypeReferenceDirective.isExternalLibraryImport) + currentNodeModulesDepth--; + } + else { + fileProcessingDiagnostics.add(createRefFileDiagnostic(refFile, ts.Diagnostics.Cannot_find_type_definition_file_for_0, typeReferenceDirective)); + } + if (saveResolution) { + resolvedTypeReferenceDirectives.set(typeReferenceDirective, resolvedTypeReferenceDirective); + } + } + function processLibReferenceDirectives(file) { + ts.forEach(file.libReferenceDirectives, function (libReference) { + var libName = ts.toFileNameLowerCase(libReference.fileName); + var libFileName = ts.libMap.get(libName); + if (libFileName) { + // we ignore any 'no-default-lib' reference set on this file. + processRootFile(ts.combinePaths(defaultLibraryPath, libFileName), /*isDefaultLib*/ true, /*ignoreNoDefaultLib*/ true); + } + else { + var unqualifiedLibName = ts.removeSuffix(ts.removePrefix(libName, "lib."), ".d.ts"); + var suggestion = ts.getSpellingSuggestion(unqualifiedLibName, ts.libs, ts.identity); + var message = suggestion ? ts.Diagnostics.Cannot_find_lib_definition_for_0_Did_you_mean_1 : ts.Diagnostics.Cannot_find_lib_definition_for_0; + fileProcessingDiagnostics.add(ts.createFileDiagnostic(file, libReference.pos, libReference.end - libReference.pos, message, libName, suggestion)); + } + }); + } + function createRefFileDiagnostic(refFile, message) { + var args = []; + for (var _i = 2; _i < arguments.length; _i++) { + args[_i - 2] = arguments[_i]; + } + if (!refFile) { + return ts.createCompilerDiagnostic.apply(void 0, __spreadArrays([message], args)); + } + else { + return ts.createFileDiagnostic.apply(void 0, __spreadArrays([refFile.file, refFile.pos, refFile.end - refFile.pos, message], args)); + } + } + function getCanonicalFileName(fileName) { + return host.getCanonicalFileName(fileName); + } + function processImportedModules(file) { + collectExternalModuleReferences(file); + if (file.imports.length || file.moduleAugmentations.length) { + // Because global augmentation doesn't have string literal name, we can check for global augmentation as such. + var moduleNames = getModuleNames(file); + var resolutions = resolveModuleNamesReusingOldState(moduleNames, ts.getNormalizedAbsolutePath(file.originalFileName, currentDirectory), file); + ts.Debug.assert(resolutions.length === moduleNames.length); + for (var i = 0; i < moduleNames.length; i++) { + var resolution = resolutions[i]; + ts.setResolvedModule(file, moduleNames[i], resolution); + if (!resolution) { + continue; + } + var isFromNodeModulesSearch = resolution.isExternalLibraryImport; + var isJsFile = !ts.resolutionExtensionIsTSOrJson(resolution.extension); + var isJsFileFromNodeModules = isFromNodeModulesSearch && isJsFile; + var resolvedFileName = resolution.resolvedFileName; + if (isFromNodeModulesSearch) { + currentNodeModulesDepth++; + } + // add file to program only if: + // - resolution was successful + // - noResolve is falsy + // - module name comes from the list of imports + // - it's not a top level JavaScript module that exceeded the search max + var elideImport = isJsFileFromNodeModules && currentNodeModulesDepth > maxNodeModuleJsDepth; + // Don't add the file if it has a bad extension (e.g. 'tsx' if we don't have '--allowJs') + // This may still end up being an untyped module -- the file won't be included but imports will be allowed. + var shouldAddFile = resolvedFileName + && !getResolutionDiagnostic(options, resolution) + && !options.noResolve + && i < file.imports.length + && !elideImport + && !(isJsFile && !options.allowJs) + && (ts.isInJSFile(file.imports[i]) || !(file.imports[i].flags & 4194304 /* JSDoc */)); + if (elideImport) { + modulesWithElidedImports.set(file.path, true); + } + else if (shouldAddFile) { + var path = toPath(resolvedFileName); + var pos = ts.skipTrivia(file.text, file.imports[i].pos); + findSourceFile(resolvedFileName, path, + /*isDefaultLib*/ false, + /*ignoreNoDefaultLib*/ false, { + kind: ts.RefFileKind.Import, + index: i, + file: file, + pos: pos, + end: file.imports[i].end + }, resolution.packageId); + } + if (isFromNodeModulesSearch) { + currentNodeModulesDepth--; + } + } + } + else { + // no imports - drop cached module resolutions + file.resolvedModules = undefined; + } + } + function computeCommonSourceDirectory(sourceFiles) { + var fileNames = ts.mapDefined(sourceFiles, function (file) { return file.isDeclarationFile ? undefined : file.fileName; }); + return computeCommonSourceDirectoryOfFilenames(fileNames, currentDirectory, getCanonicalFileName); + } + function checkSourceFilesBelongToPath(sourceFiles, rootDirectory) { + var allFilesBelongToPath = true; + var absoluteRootDirectoryPath = host.getCanonicalFileName(ts.getNormalizedAbsolutePath(rootDirectory, currentDirectory)); + var rootPaths; + for (var _i = 0, sourceFiles_2 = sourceFiles; _i < sourceFiles_2.length; _i++) { + var sourceFile = sourceFiles_2[_i]; + if (!sourceFile.isDeclarationFile) { + var absoluteSourceFilePath = host.getCanonicalFileName(ts.getNormalizedAbsolutePath(sourceFile.fileName, currentDirectory)); + if (absoluteSourceFilePath.indexOf(absoluteRootDirectoryPath) !== 0) { + if (!rootPaths) + rootPaths = ts.arrayToSet(rootNames, toPath); + addProgramDiagnosticAtRefPath(sourceFile, rootPaths, ts.Diagnostics.File_0_is_not_under_rootDir_1_rootDir_is_expected_to_contain_all_source_files, sourceFile.fileName, rootDirectory); + allFilesBelongToPath = false; + } + } + } + return allFilesBelongToPath; + } + function parseProjectReferenceConfigFile(ref) { + if (!projectReferenceRedirects) { + projectReferenceRedirects = ts.createMap(); + } + // The actual filename (i.e. add "/tsconfig.json" if necessary) + var refPath = resolveProjectReferencePath(ref); + var sourceFilePath = toPath(refPath); + var fromCache = projectReferenceRedirects.get(sourceFilePath); + if (fromCache !== undefined) { + return fromCache || undefined; + } + var commandLine; + var sourceFile; + if (host.getParsedCommandLine) { + commandLine = host.getParsedCommandLine(refPath); + if (!commandLine) { + addFileToFilesByName(/*sourceFile*/ undefined, sourceFilePath, /*redirectedPath*/ undefined); + projectReferenceRedirects.set(sourceFilePath, false); + return undefined; + } + sourceFile = ts.Debug.checkDefined(commandLine.options.configFile); + ts.Debug.assert(!sourceFile.path || sourceFile.path === sourceFilePath); + addFileToFilesByName(sourceFile, sourceFilePath, /*redirectedPath*/ undefined); + } + else { + // An absolute path pointing to the containing directory of the config file + var basePath = ts.getNormalizedAbsolutePath(ts.getDirectoryPath(refPath), host.getCurrentDirectory()); + sourceFile = host.getSourceFile(refPath, 100 /* JSON */); + addFileToFilesByName(sourceFile, sourceFilePath, /*redirectedPath*/ undefined); + if (sourceFile === undefined) { + projectReferenceRedirects.set(sourceFilePath, false); + return undefined; + } + commandLine = ts.parseJsonSourceFileConfigFileContent(sourceFile, configParsingHost, basePath, /*existingOptions*/ undefined, refPath); + } + sourceFile.fileName = refPath; + sourceFile.path = sourceFilePath; + sourceFile.resolvedPath = sourceFilePath; + sourceFile.originalFileName = refPath; + var resolvedRef = { commandLine: commandLine, sourceFile: sourceFile }; + projectReferenceRedirects.set(sourceFilePath, resolvedRef); + if (commandLine.projectReferences) { + resolvedRef.references = commandLine.projectReferences.map(parseProjectReferenceConfigFile); + } + return resolvedRef; + } + function verifyCompilerOptions() { + if (options.strictPropertyInitialization && !ts.getStrictOptionValue(options, "strictNullChecks")) { + createDiagnosticForOptionName(ts.Diagnostics.Option_0_cannot_be_specified_without_specifying_option_1, "strictPropertyInitialization", "strictNullChecks"); + } + if (options.isolatedModules) { + if (options.out) { + createDiagnosticForOptionName(ts.Diagnostics.Option_0_cannot_be_specified_with_option_1, "out", "isolatedModules"); + } + if (options.outFile) { + createDiagnosticForOptionName(ts.Diagnostics.Option_0_cannot_be_specified_with_option_1, "outFile", "isolatedModules"); + } + } + if (options.inlineSourceMap) { + if (options.sourceMap) { + createDiagnosticForOptionName(ts.Diagnostics.Option_0_cannot_be_specified_with_option_1, "sourceMap", "inlineSourceMap"); + } + if (options.mapRoot) { + createDiagnosticForOptionName(ts.Diagnostics.Option_0_cannot_be_specified_with_option_1, "mapRoot", "inlineSourceMap"); + } + } + if (options.paths && options.baseUrl === undefined) { + createDiagnosticForOptionName(ts.Diagnostics.Option_paths_cannot_be_used_without_specifying_baseUrl_option, "paths"); + } + if (options.composite) { + if (options.declaration === false) { + createDiagnosticForOptionName(ts.Diagnostics.Composite_projects_may_not_disable_declaration_emit, "declaration"); + } + if (options.incremental === false) { + createDiagnosticForOptionName(ts.Diagnostics.Composite_projects_may_not_disable_incremental_compilation, "declaration"); + } + } + if (options.tsBuildInfoFile) { + if (!ts.isIncrementalCompilation(options)) { + createDiagnosticForOptionName(ts.Diagnostics.Option_0_cannot_be_specified_without_specifying_option_1_or_option_2, "tsBuildInfoFile", "incremental", "composite"); + } + } + else if (options.incremental && !options.outFile && !options.out && !options.configFilePath) { + programDiagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_incremental_can_only_be_specified_using_tsconfig_emitting_to_single_file_or_when_option_tsBuildInfoFile_is_specified)); + } + if (!options.listFilesOnly && options.noEmit && ts.isIncrementalCompilation(options)) { + createDiagnosticForOptionName(ts.Diagnostics.Option_0_cannot_be_specified_with_option_1, "noEmit", options.incremental ? "incremental" : "composite"); + } + verifyProjectReferences(); + // List of collected files is complete; validate exhautiveness if this is a project with a file list + if (options.composite) { + var rootPaths = ts.arrayToSet(rootNames, toPath); + for (var _i = 0, files_3 = files; _i < files_3.length; _i++) { + var file = files_3[_i]; + // Ignore file that is not emitted + if (ts.sourceFileMayBeEmitted(file, program) && !rootPaths.has(file.path)) { + addProgramDiagnosticAtRefPath(file, rootPaths, ts.Diagnostics.File_0_is_not_listed_within_the_file_list_of_project_1_Projects_must_list_all_files_or_use_an_include_pattern, file.fileName, options.configFilePath || ""); + } + } + } + if (options.paths) { + for (var key in options.paths) { + if (!ts.hasProperty(options.paths, key)) { + continue; + } + if (!ts.hasZeroOrOneAsteriskCharacter(key)) { + createDiagnosticForOptionPaths(/*onKey*/ true, key, ts.Diagnostics.Pattern_0_can_have_at_most_one_Asterisk_character, key); + } + if (ts.isArray(options.paths[key])) { + var len = options.paths[key].length; + if (len === 0) { + createDiagnosticForOptionPaths(/*onKey*/ false, key, ts.Diagnostics.Substitutions_for_pattern_0_shouldn_t_be_an_empty_array, key); + } + for (var i = 0; i < len; i++) { + var subst = options.paths[key][i]; + var typeOfSubst = typeof subst; + if (typeOfSubst === "string") { + if (!ts.hasZeroOrOneAsteriskCharacter(subst)) { + createDiagnosticForOptionPathKeyValue(key, i, ts.Diagnostics.Substitution_0_in_pattern_1_can_have_at_most_one_Asterisk_character, subst, key); + } + } + else { + createDiagnosticForOptionPathKeyValue(key, i, ts.Diagnostics.Substitution_0_for_pattern_1_has_incorrect_type_expected_string_got_2, subst, key, typeOfSubst); + } + } + } + else { + createDiagnosticForOptionPaths(/*onKey*/ false, key, ts.Diagnostics.Substitutions_for_pattern_0_should_be_an_array, key); + } + } + } + if (!options.sourceMap && !options.inlineSourceMap) { + if (options.inlineSources) { + createDiagnosticForOptionName(ts.Diagnostics.Option_0_can_only_be_used_when_either_option_inlineSourceMap_or_option_sourceMap_is_provided, "inlineSources"); + } + if (options.sourceRoot) { + createDiagnosticForOptionName(ts.Diagnostics.Option_0_can_only_be_used_when_either_option_inlineSourceMap_or_option_sourceMap_is_provided, "sourceRoot"); + } + } + if (options.out && options.outFile) { + createDiagnosticForOptionName(ts.Diagnostics.Option_0_cannot_be_specified_with_option_1, "out", "outFile"); + } + if (options.mapRoot && !(options.sourceMap || options.declarationMap)) { + // Error to specify --mapRoot without --sourcemap + createDiagnosticForOptionName(ts.Diagnostics.Option_0_cannot_be_specified_without_specifying_option_1_or_option_2, "mapRoot", "sourceMap", "declarationMap"); + } + if (options.declarationDir) { + if (!ts.getEmitDeclarations(options)) { + createDiagnosticForOptionName(ts.Diagnostics.Option_0_cannot_be_specified_without_specifying_option_1_or_option_2, "declarationDir", "declaration", "composite"); + } + if (options.out || options.outFile) { + createDiagnosticForOptionName(ts.Diagnostics.Option_0_cannot_be_specified_with_option_1, "declarationDir", options.out ? "out" : "outFile"); + } + } + if (options.declarationMap && !ts.getEmitDeclarations(options)) { + createDiagnosticForOptionName(ts.Diagnostics.Option_0_cannot_be_specified_without_specifying_option_1_or_option_2, "declarationMap", "declaration", "composite"); + } + if (options.lib && options.noLib) { + createDiagnosticForOptionName(ts.Diagnostics.Option_0_cannot_be_specified_with_option_1, "lib", "noLib"); + } + if (options.noImplicitUseStrict && ts.getStrictOptionValue(options, "alwaysStrict")) { + createDiagnosticForOptionName(ts.Diagnostics.Option_0_cannot_be_specified_with_option_1, "noImplicitUseStrict", "alwaysStrict"); + } + var languageVersion = options.target || 0 /* ES3 */; + var outFile = options.outFile || options.out; + var firstNonAmbientExternalModuleSourceFile = ts.find(files, function (f) { return ts.isExternalModule(f) && !f.isDeclarationFile; }); + if (options.isolatedModules) { + if (options.module === ts.ModuleKind.None && languageVersion < 2 /* ES2015 */) { + createDiagnosticForOptionName(ts.Diagnostics.Option_isolatedModules_can_only_be_used_when_either_option_module_is_provided_or_option_target_is_ES2015_or_higher, "isolatedModules", "target"); + } + var firstNonExternalModuleSourceFile = ts.find(files, function (f) { return !ts.isExternalModule(f) && !ts.isSourceFileJS(f) && !f.isDeclarationFile && f.scriptKind !== 6 /* JSON */; }); + if (firstNonExternalModuleSourceFile) { + var span = ts.getErrorSpanForNode(firstNonExternalModuleSourceFile, firstNonExternalModuleSourceFile); + programDiagnostics.add(ts.createFileDiagnostic(firstNonExternalModuleSourceFile, span.start, span.length, ts.Diagnostics.All_files_must_be_modules_when_the_isolatedModules_flag_is_provided)); + } + } + else if (firstNonAmbientExternalModuleSourceFile && languageVersion < 2 /* ES2015 */ && options.module === ts.ModuleKind.None) { + // We cannot use createDiagnosticFromNode because nodes do not have parents yet + var span = ts.getErrorSpanForNode(firstNonAmbientExternalModuleSourceFile, firstNonAmbientExternalModuleSourceFile.externalModuleIndicator); + programDiagnostics.add(ts.createFileDiagnostic(firstNonAmbientExternalModuleSourceFile, span.start, span.length, ts.Diagnostics.Cannot_use_imports_exports_or_module_augmentations_when_module_is_none)); + } + // Cannot specify module gen that isn't amd or system with --out + if (outFile && !options.emitDeclarationOnly) { + if (options.module && !(options.module === ts.ModuleKind.AMD || options.module === ts.ModuleKind.System)) { + createDiagnosticForOptionName(ts.Diagnostics.Only_amd_and_system_modules_are_supported_alongside_0, options.out ? "out" : "outFile", "module"); + } + else if (options.module === undefined && firstNonAmbientExternalModuleSourceFile) { + var span = ts.getErrorSpanForNode(firstNonAmbientExternalModuleSourceFile, firstNonAmbientExternalModuleSourceFile.externalModuleIndicator); + programDiagnostics.add(ts.createFileDiagnostic(firstNonAmbientExternalModuleSourceFile, span.start, span.length, ts.Diagnostics.Cannot_compile_modules_using_option_0_unless_the_module_flag_is_amd_or_system, options.out ? "out" : "outFile")); + } + } + if (options.resolveJsonModule) { + if (ts.getEmitModuleResolutionKind(options) !== ts.ModuleResolutionKind.NodeJs) { + createDiagnosticForOptionName(ts.Diagnostics.Option_resolveJsonModule_cannot_be_specified_without_node_module_resolution_strategy, "resolveJsonModule"); + } + // Any emit other than common js, amd, es2015 or esnext is error + else if (!ts.hasJsonModuleEmitEnabled(options)) { + createDiagnosticForOptionName(ts.Diagnostics.Option_resolveJsonModule_can_only_be_specified_when_module_code_generation_is_commonjs_amd_es2015_or_esNext, "resolveJsonModule", "module"); + } + } + // there has to be common source directory if user specified --outdir || --sourceRoot + // if user specified --mapRoot, there needs to be common source directory if there would be multiple files being emitted + if (options.outDir || // there is --outDir specified + options.sourceRoot || // there is --sourceRoot specified + options.mapRoot) { // there is --mapRoot specified + // Precalculate and cache the common source directory + var dir = getCommonSourceDirectory(); + // If we failed to find a good common directory, but outDir is specified and at least one of our files is on a windows drive/URL/other resource, add a failure + if (options.outDir && dir === "" && files.some(function (file) { return ts.getRootLength(file.fileName) > 1; })) { + createDiagnosticForOptionName(ts.Diagnostics.Cannot_find_the_common_subdirectory_path_for_the_input_files, "outDir"); + } + } + if (options.useDefineForClassFields && languageVersion === 0 /* ES3 */) { + createDiagnosticForOptionName(ts.Diagnostics.Option_0_cannot_be_specified_when_option_target_is_ES3, "useDefineForClassFields"); + } + if (options.checkJs && !options.allowJs) { + programDiagnostics.add(ts.createCompilerDiagnostic(ts.Diagnostics.Option_0_cannot_be_specified_without_specifying_option_1, "checkJs", "allowJs")); + } + if (options.emitDeclarationOnly) { + if (!ts.getEmitDeclarations(options)) { + createDiagnosticForOptionName(ts.Diagnostics.Option_0_cannot_be_specified_without_specifying_option_1_or_option_2, "emitDeclarationOnly", "declaration", "composite"); + } + if (options.noEmit) { + createDiagnosticForOptionName(ts.Diagnostics.Option_0_cannot_be_specified_with_option_1, "emitDeclarationOnly", "noEmit"); + } + } + if (options.emitDecoratorMetadata && + !options.experimentalDecorators) { + createDiagnosticForOptionName(ts.Diagnostics.Option_0_cannot_be_specified_without_specifying_option_1, "emitDecoratorMetadata", "experimentalDecorators"); + } + if (options.jsxFactory) { + if (options.reactNamespace) { + createDiagnosticForOptionName(ts.Diagnostics.Option_0_cannot_be_specified_with_option_1, "reactNamespace", "jsxFactory"); + } + if (!ts.parseIsolatedEntityName(options.jsxFactory, languageVersion)) { + createOptionValueDiagnostic("jsxFactory", ts.Diagnostics.Invalid_value_for_jsxFactory_0_is_not_a_valid_identifier_or_qualified_name, options.jsxFactory); + } + } + else if (options.reactNamespace && !ts.isIdentifierText(options.reactNamespace, languageVersion)) { + createOptionValueDiagnostic("reactNamespace", ts.Diagnostics.Invalid_value_for_reactNamespace_0_is_not_a_valid_identifier, options.reactNamespace); + } + // If the emit is enabled make sure that every output file is unique and not overwriting any of the input files + if (!options.noEmit && !options.suppressOutputPathCheck) { + var emitHost = getEmitHost(); + var emitFilesSeen_1 = ts.createMap(); + ts.forEachEmittedFile(emitHost, function (emitFileNames) { + if (!options.emitDeclarationOnly) { + verifyEmitFilePath(emitFileNames.jsFilePath, emitFilesSeen_1); + } + verifyEmitFilePath(emitFileNames.declarationFilePath, emitFilesSeen_1); + }); + } + // Verify that all the emit files are unique and don't overwrite input files + function verifyEmitFilePath(emitFileName, emitFilesSeen) { + if (emitFileName) { + var emitFilePath = toPath(emitFileName); + // Report error if the output overwrites input file + if (filesByName.has(emitFilePath)) { + var chain = void 0; + if (!options.configFilePath) { + // The program is from either an inferred project or an external project + chain = ts.chainDiagnosticMessages(/*details*/ undefined, ts.Diagnostics.Adding_a_tsconfig_json_file_will_help_organize_projects_that_contain_both_TypeScript_and_JavaScript_files_Learn_more_at_https_Colon_Slash_Slashaka_ms_Slashtsconfig); + } + chain = ts.chainDiagnosticMessages(chain, ts.Diagnostics.Cannot_write_file_0_because_it_would_overwrite_input_file, emitFileName); + blockEmittingOfFile(emitFileName, ts.createCompilerDiagnosticFromMessageChain(chain)); + } + var emitFileKey = !host.useCaseSensitiveFileNames() ? ts.toFileNameLowerCase(emitFilePath) : emitFilePath; + // Report error if multiple files write into same file + if (emitFilesSeen.has(emitFileKey)) { + // Already seen the same emit file - report error + blockEmittingOfFile(emitFileName, ts.createCompilerDiagnostic(ts.Diagnostics.Cannot_write_file_0_because_it_would_be_overwritten_by_multiple_input_files, emitFileName)); + } + else { + emitFilesSeen.set(emitFileKey, true); + } + } + } + } + function createFileDiagnosticAtReference(refPathToReportErrorOn, message) { + var _a, _b; + var args = []; + for (var _i = 2; _i < arguments.length; _i++) { + args[_i - 2] = arguments[_i]; + } + var refFile = ts.Debug.checkDefined(getSourceFileByPath(refPathToReportErrorOn.file)); + var kind = refPathToReportErrorOn.kind, index = refPathToReportErrorOn.index; + var pos, end; + switch (kind) { + case ts.RefFileKind.Import: + pos = ts.skipTrivia(refFile.text, refFile.imports[index].pos); + end = refFile.imports[index].end; + break; + case ts.RefFileKind.ReferenceFile: + (_a = refFile.referencedFiles[index], pos = _a.pos, end = _a.end); + break; + case ts.RefFileKind.TypeReferenceDirective: + (_b = refFile.typeReferenceDirectives[index], pos = _b.pos, end = _b.end); + break; + default: + return ts.Debug.assertNever(kind); + } + return ts.createFileDiagnostic.apply(void 0, __spreadArrays([refFile, pos, end - pos, message], args)); + } + function addProgramDiagnosticAtRefPath(file, rootPaths, message) { + var args = []; + for (var _i = 3; _i < arguments.length; _i++) { + args[_i - 3] = arguments[_i]; + } + var refPaths = refFileMap && refFileMap.get(file.path); + var refPathToReportErrorOn = ts.forEach(refPaths, function (refPath) { return rootPaths.has(refPath.file) ? refPath : undefined; }) || + ts.elementAt(refPaths, 0); + programDiagnostics.add(refPathToReportErrorOn ? createFileDiagnosticAtReference.apply(void 0, __spreadArrays([refPathToReportErrorOn, message], args)) : ts.createCompilerDiagnostic.apply(void 0, __spreadArrays([message], args))); + } + function verifyProjectReferences() { + var buildInfoPath = !options.noEmit && !options.suppressOutputPathCheck ? ts.getTsBuildInfoEmitOutputFilePath(options) : undefined; + forEachProjectReference(projectReferences, resolvedProjectReferences, function (resolvedRef, index, parent) { + var ref = (parent ? parent.commandLine.projectReferences : projectReferences)[index]; + var parentFile = parent && parent.sourceFile; + if (!resolvedRef) { + createDiagnosticForReference(parentFile, index, ts.Diagnostics.File_0_not_found, ref.path); + return; + } + var options = resolvedRef.commandLine.options; + if (!options.composite) { + // ok to not have composite if the current program is container only + var inputs = parent ? parent.commandLine.fileNames : rootNames; + if (inputs.length) { + createDiagnosticForReference(parentFile, index, ts.Diagnostics.Referenced_project_0_must_have_setting_composite_Colon_true, ref.path); + } + } + if (ref.prepend) { + var out = options.outFile || options.out; + if (out) { + if (!host.fileExists(out)) { + createDiagnosticForReference(parentFile, index, ts.Diagnostics.Output_file_0_from_project_1_does_not_exist, out, ref.path); + } + } + else { + createDiagnosticForReference(parentFile, index, ts.Diagnostics.Cannot_prepend_project_0_because_it_does_not_have_outFile_set, ref.path); + } + } + if (!parent && buildInfoPath && buildInfoPath === ts.getTsBuildInfoEmitOutputFilePath(options)) { + createDiagnosticForReference(parentFile, index, ts.Diagnostics.Cannot_write_file_0_because_it_will_overwrite_tsbuildinfo_file_generated_by_referenced_project_1, buildInfoPath, ref.path); + hasEmitBlockingDiagnostics.set(toPath(buildInfoPath), true); + } + }); + } + function createDiagnosticForOptionPathKeyValue(key, valueIndex, message, arg0, arg1, arg2) { + var needCompilerDiagnostic = true; + var pathsSyntax = getOptionPathsSyntax(); + for (var _i = 0, pathsSyntax_1 = pathsSyntax; _i < pathsSyntax_1.length; _i++) { + var pathProp = pathsSyntax_1[_i]; + if (ts.isObjectLiteralExpression(pathProp.initializer)) { + for (var _a = 0, _b = ts.getPropertyAssignment(pathProp.initializer, key); _a < _b.length; _a++) { + var keyProps = _b[_a]; + var initializer = keyProps.initializer; + if (ts.isArrayLiteralExpression(initializer) && initializer.elements.length > valueIndex) { + programDiagnostics.add(ts.createDiagnosticForNodeInSourceFile(options.configFile, initializer.elements[valueIndex], message, arg0, arg1, arg2)); + needCompilerDiagnostic = false; + } + } + } + } + if (needCompilerDiagnostic) { + programDiagnostics.add(ts.createCompilerDiagnostic(message, arg0, arg1, arg2)); + } + } + function createDiagnosticForOptionPaths(onKey, key, message, arg0) { + var needCompilerDiagnostic = true; + var pathsSyntax = getOptionPathsSyntax(); + for (var _i = 0, pathsSyntax_2 = pathsSyntax; _i < pathsSyntax_2.length; _i++) { + var pathProp = pathsSyntax_2[_i]; + if (ts.isObjectLiteralExpression(pathProp.initializer) && + createOptionDiagnosticInObjectLiteralSyntax(pathProp.initializer, onKey, key, /*key2*/ undefined, message, arg0)) { + needCompilerDiagnostic = false; + } + } + if (needCompilerDiagnostic) { + programDiagnostics.add(ts.createCompilerDiagnostic(message, arg0)); + } + } + function getOptionsSyntaxByName(name) { + var compilerOptionsObjectLiteralSyntax = getCompilerOptionsObjectLiteralSyntax(); + if (compilerOptionsObjectLiteralSyntax) { + return ts.getPropertyAssignment(compilerOptionsObjectLiteralSyntax, name); + } + return undefined; + } + function getOptionPathsSyntax() { + return getOptionsSyntaxByName("paths") || ts.emptyArray; + } + function createDiagnosticForOptionName(message, option1, option2, option3) { + createDiagnosticForOption(/*onKey*/ true, option1, option2, message, option1, option2, option3); + } + function createOptionValueDiagnostic(option1, message, arg0) { + createDiagnosticForOption(/*onKey*/ false, option1, /*option2*/ undefined, message, arg0); + } + function createDiagnosticForReference(sourceFile, index, message, arg0, arg1) { + var referencesSyntax = ts.firstDefined(ts.getTsConfigPropArray(sourceFile || options.configFile, "references"), function (property) { return ts.isArrayLiteralExpression(property.initializer) ? property.initializer : undefined; }); + if (referencesSyntax && referencesSyntax.elements.length > index) { + programDiagnostics.add(ts.createDiagnosticForNodeInSourceFile(sourceFile || options.configFile, referencesSyntax.elements[index], message, arg0, arg1)); + } + else { + programDiagnostics.add(ts.createCompilerDiagnostic(message, arg0, arg1)); + } + } + function createDiagnosticForOption(onKey, option1, option2, message, arg0, arg1, arg2) { + var compilerOptionsObjectLiteralSyntax = getCompilerOptionsObjectLiteralSyntax(); + var needCompilerDiagnostic = !compilerOptionsObjectLiteralSyntax || + !createOptionDiagnosticInObjectLiteralSyntax(compilerOptionsObjectLiteralSyntax, onKey, option1, option2, message, arg0, arg1, arg2); + if (needCompilerDiagnostic) { + programDiagnostics.add(ts.createCompilerDiagnostic(message, arg0, arg1, arg2)); + } + } + function getCompilerOptionsObjectLiteralSyntax() { + if (_compilerOptionsObjectLiteralSyntax === undefined) { + _compilerOptionsObjectLiteralSyntax = null; // eslint-disable-line no-null/no-null + var jsonObjectLiteral = ts.getTsConfigObjectLiteralExpression(options.configFile); + if (jsonObjectLiteral) { + for (var _i = 0, _a = ts.getPropertyAssignment(jsonObjectLiteral, "compilerOptions"); _i < _a.length; _i++) { + var prop = _a[_i]; + if (ts.isObjectLiteralExpression(prop.initializer)) { + _compilerOptionsObjectLiteralSyntax = prop.initializer; + break; + } + } + } + } + return _compilerOptionsObjectLiteralSyntax; + } + function createOptionDiagnosticInObjectLiteralSyntax(objectLiteral, onKey, key1, key2, message, arg0, arg1, arg2) { + var props = ts.getPropertyAssignment(objectLiteral, key1, key2); + for (var _i = 0, props_3 = props; _i < props_3.length; _i++) { + var prop = props_3[_i]; + programDiagnostics.add(ts.createDiagnosticForNodeInSourceFile(options.configFile, onKey ? prop.name : prop.initializer, message, arg0, arg1, arg2)); + } + return !!props.length; + } + function blockEmittingOfFile(emitFileName, diag) { + hasEmitBlockingDiagnostics.set(toPath(emitFileName), true); + programDiagnostics.add(diag); + } + function isEmittedFile(file) { + if (options.noEmit) { + return false; + } + // If this is source file, its not emitted file + var filePath = toPath(file); + if (getSourceFileByPath(filePath)) { + return false; + } + // If options have --outFile or --out just check that + var out = options.outFile || options.out; + if (out) { + return isSameFile(filePath, out) || isSameFile(filePath, ts.removeFileExtension(out) + ".d.ts" /* Dts */); + } + // If declarationDir is specified, return if its a file in that directory + if (options.declarationDir && ts.containsPath(options.declarationDir, filePath, currentDirectory, !host.useCaseSensitiveFileNames())) { + return true; + } + // If --outDir, check if file is in that directory + if (options.outDir) { + return ts.containsPath(options.outDir, filePath, currentDirectory, !host.useCaseSensitiveFileNames()); + } + if (ts.fileExtensionIsOneOf(filePath, ts.supportedJSExtensions) || ts.fileExtensionIs(filePath, ".d.ts" /* Dts */)) { + // Otherwise just check if sourceFile with the name exists + var filePathWithoutExtension = ts.removeFileExtension(filePath); + return !!getSourceFileByPath((filePathWithoutExtension + ".ts" /* Ts */)) || + !!getSourceFileByPath((filePathWithoutExtension + ".tsx" /* Tsx */)); + } + return false; + } + function isSameFile(file1, file2) { + return ts.comparePaths(file1, file2, currentDirectory, !host.useCaseSensitiveFileNames()) === 0 /* EqualTo */; + } + function getProbableSymlinks() { + if (host.getSymlinks) { + return host.getSymlinks(); + } + return symlinks || (symlinks = ts.discoverProbableSymlinks(files, getCanonicalFileName, host.getCurrentDirectory())); + } + } + ts.createProgram = createProgram; + function updateHostForUseSourceOfProjectReferenceRedirect(host) { + var mapOfDeclarationDirectories; + var symlinkedDirectories; + var symlinkedFiles; + var originalFileExists = host.compilerHost.fileExists; + var originalDirectoryExists = host.compilerHost.directoryExists; + var originalGetDirectories = host.compilerHost.getDirectories; + var originalRealpath = host.compilerHost.realpath; + if (!host.useSourceOfProjectReferenceRedirect) + return { onProgramCreateComplete: ts.noop, fileExists: fileExists }; + host.compilerHost.fileExists = fileExists; + if (originalDirectoryExists) { + // This implementation of directoryExists checks if the directory being requested is + // directory of .d.ts file for the referenced Project. + // If it is it returns true irrespective of whether that directory exists on host + host.compilerHost.directoryExists = function (path) { + if (originalDirectoryExists.call(host.compilerHost, path)) { + handleDirectoryCouldBeSymlink(path); + return true; + } + if (!host.getResolvedProjectReferences()) + return false; + if (!mapOfDeclarationDirectories) { + mapOfDeclarationDirectories = ts.createMap(); + host.forEachResolvedProjectReference(function (ref) { + if (!ref) + return; + var out = ref.commandLine.options.outFile || ref.commandLine.options.out; + if (out) { + mapOfDeclarationDirectories.set(ts.getDirectoryPath(host.toPath(out)), true); + } + else { + // Set declaration's in different locations only, if they are next to source the directory present doesnt change + var declarationDir = ref.commandLine.options.declarationDir || ref.commandLine.options.outDir; + if (declarationDir) { + mapOfDeclarationDirectories.set(host.toPath(declarationDir), true); + } + } + }); + } + return fileOrDirectoryExistsUsingSource(path, /*isFile*/ false); + }; + } + if (originalGetDirectories) { + // Call getDirectories only if directory actually present on the host + // This is needed to ensure that we arent getting directories that we fake about presence for + host.compilerHost.getDirectories = function (path) { + return !host.getResolvedProjectReferences() || (originalDirectoryExists && originalDirectoryExists.call(host.compilerHost, path)) ? + originalGetDirectories.call(host.compilerHost, path) : + []; + }; + } + // This is something we keep for life time of the host + if (originalRealpath) { + host.compilerHost.realpath = function (s) { + return (symlinkedFiles === null || symlinkedFiles === void 0 ? void 0 : symlinkedFiles.get(host.toPath(s))) || + originalRealpath.call(host.compilerHost, s); + }; + } + return { onProgramCreateComplete: onProgramCreateComplete, fileExists: fileExists }; + function onProgramCreateComplete() { + host.compilerHost.fileExists = originalFileExists; + host.compilerHost.directoryExists = originalDirectoryExists; + host.compilerHost.getDirectories = originalGetDirectories; + // DO not revert realpath as it could be used later + } + // This implementation of fileExists checks if the file being requested is + // .d.ts file for the referenced Project. + // If it is it returns true irrespective of whether that file exists on host + function fileExists(file) { + if (originalFileExists.call(host.compilerHost, file)) + return true; + if (!host.getResolvedProjectReferences()) + return false; + if (!ts.isDeclarationFileName(file)) + return false; + // Project references go to source file instead of .d.ts file + return fileOrDirectoryExistsUsingSource(file, /*isFile*/ true); + } + function fileExistsIfProjectReferenceDts(file) { + var source = host.getSourceOfProjectReferenceRedirect(file); + return source !== undefined ? + ts.isString(source) ? originalFileExists.call(host.compilerHost, source) : true : + undefined; + } + function directoryExistsIfProjectReferenceDeclDir(dir) { + var dirPath = host.toPath(dir); + var dirPathWithTrailingDirectorySeparator = "" + dirPath + ts.directorySeparator; + return ts.forEachKey(mapOfDeclarationDirectories, function (declDirPath) { return dirPath === declDirPath || + // Any parent directory of declaration dir + ts.startsWith(declDirPath, dirPathWithTrailingDirectorySeparator) || + // Any directory inside declaration dir + ts.startsWith(dirPath, declDirPath + "/"); }); + } + function handleDirectoryCouldBeSymlink(directory) { + if (!host.getResolvedProjectReferences()) + return; + // Because we already watch node_modules, handle symlinks in there + if (!originalRealpath || !ts.stringContains(directory, ts.nodeModulesPathPart)) + return; + if (!symlinkedDirectories) + symlinkedDirectories = ts.createMap(); + var directoryPath = ts.ensureTrailingDirectorySeparator(host.toPath(directory)); + if (symlinkedDirectories.has(directoryPath)) + return; + var real = ts.normalizePath(originalRealpath.call(host.compilerHost, directory)); + var realPath; + if (real === directory || + (realPath = ts.ensureTrailingDirectorySeparator(host.toPath(real))) === directoryPath) { + // not symlinked + symlinkedDirectories.set(directoryPath, false); + return; + } + symlinkedDirectories.set(directoryPath, { + real: ts.ensureTrailingDirectorySeparator(real), + realPath: realPath + }); + } + function fileOrDirectoryExistsUsingSource(fileOrDirectory, isFile) { + var fileOrDirectoryExistsUsingSource = isFile ? + function (file) { return fileExistsIfProjectReferenceDts(file); } : + function (dir) { return directoryExistsIfProjectReferenceDeclDir(dir); }; + // Check current directory or file + var result = fileOrDirectoryExistsUsingSource(fileOrDirectory); + if (result !== undefined) + return result; + if (!symlinkedDirectories) + return false; + var fileOrDirectoryPath = host.toPath(fileOrDirectory); + if (!ts.stringContains(fileOrDirectoryPath, ts.nodeModulesPathPart)) + return false; + if (isFile && symlinkedFiles && symlinkedFiles.has(fileOrDirectoryPath)) + return true; + // If it contains node_modules check if its one of the symlinked path we know of + return ts.firstDefinedIterator(symlinkedDirectories.entries(), function (_a) { + var directoryPath = _a[0], symlinkedDirectory = _a[1]; + if (!symlinkedDirectory || !ts.startsWith(fileOrDirectoryPath, directoryPath)) + return undefined; + var result = fileOrDirectoryExistsUsingSource(fileOrDirectoryPath.replace(directoryPath, symlinkedDirectory.realPath)); + if (isFile && result) { + if (!symlinkedFiles) + symlinkedFiles = ts.createMap(); + // Store the real path for the file' + var absolutePath = ts.getNormalizedAbsolutePath(fileOrDirectory, host.compilerHost.getCurrentDirectory()); + symlinkedFiles.set(fileOrDirectoryPath, "" + symlinkedDirectory.real + absolutePath.replace(new RegExp(directoryPath, "i"), "")); + } + return result; + }) || false; + } + } + /*@internal*/ + function handleNoEmitOptions(program, sourceFile, cancellationToken) { + var options = program.getCompilerOptions(); + if (options.noEmit) { + return { diagnostics: ts.emptyArray, sourceMaps: undefined, emittedFiles: undefined, emitSkipped: true }; + } + // If the noEmitOnError flag is set, then check if we have any errors so far. If so, + // immediately bail out. Note that we pass 'undefined' for 'sourceFile' so that we + // get any preEmit diagnostics, not just the ones + if (!options.noEmitOnError) + return undefined; + var diagnostics = __spreadArrays(program.getOptionsDiagnostics(cancellationToken), program.getSyntacticDiagnostics(sourceFile, cancellationToken), program.getGlobalDiagnostics(cancellationToken), program.getSemanticDiagnostics(sourceFile, cancellationToken)); + if (diagnostics.length === 0 && ts.getEmitDeclarations(program.getCompilerOptions())) { + diagnostics = program.getDeclarationDiagnostics(/*sourceFile*/ undefined, cancellationToken); + } + return diagnostics.length > 0 ? + { diagnostics: diagnostics, sourceMaps: undefined, emittedFiles: undefined, emitSkipped: true } : + undefined; + } + ts.handleNoEmitOptions = handleNoEmitOptions; + /* @internal */ + function parseConfigHostFromCompilerHostLike(host, directoryStructureHost) { + if (directoryStructureHost === void 0) { directoryStructureHost = host; } + return { + fileExists: function (f) { return directoryStructureHost.fileExists(f); }, + readDirectory: function (root, extensions, excludes, includes, depth) { + ts.Debug.assertIsDefined(directoryStructureHost.readDirectory, "'CompilerHost.readDirectory' must be implemented to correctly process 'projectReferences'"); + return directoryStructureHost.readDirectory(root, extensions, excludes, includes, depth); + }, + readFile: function (f) { return directoryStructureHost.readFile(f); }, + useCaseSensitiveFileNames: host.useCaseSensitiveFileNames(), + getCurrentDirectory: function () { return host.getCurrentDirectory(); }, + onUnRecoverableConfigFileDiagnostic: host.onUnRecoverableConfigFileDiagnostic || ts.returnUndefined, + trace: host.trace ? function (s) { return host.trace(s); } : undefined + }; + } + ts.parseConfigHostFromCompilerHostLike = parseConfigHostFromCompilerHostLike; + /* @internal */ + function createPrependNodes(projectReferences, getCommandLine, readFile) { + if (!projectReferences) + return ts.emptyArray; + var nodes; + for (var i = 0; i < projectReferences.length; i++) { + var ref = projectReferences[i]; + var resolvedRefOpts = getCommandLine(ref, i); + if (ref.prepend && resolvedRefOpts && resolvedRefOpts.options) { + var out = resolvedRefOpts.options.outFile || resolvedRefOpts.options.out; + // Upstream project didn't have outFile set -- skip (error will have been issued earlier) + if (!out) + continue; + var _a = ts.getOutputPathsForBundle(resolvedRefOpts.options, /*forceDtsPaths*/ true), jsFilePath = _a.jsFilePath, sourceMapFilePath = _a.sourceMapFilePath, declarationFilePath = _a.declarationFilePath, declarationMapPath = _a.declarationMapPath, buildInfoPath = _a.buildInfoPath; + var node = ts.createInputFiles(readFile, jsFilePath, sourceMapFilePath, declarationFilePath, declarationMapPath, buildInfoPath); + (nodes || (nodes = [])).push(node); + } + } + return nodes || ts.emptyArray; + } + ts.createPrependNodes = createPrependNodes; + function resolveProjectReferencePath(hostOrRef, ref) { + var passedInRef = ref ? ref : hostOrRef; + return ts.resolveConfigFileProjectName(passedInRef.path); + } + ts.resolveProjectReferencePath = resolveProjectReferencePath; + /* @internal */ + /** + * Returns a DiagnosticMessage if we won't include a resolved module due to its extension. + * The DiagnosticMessage's parameters are the imported module name, and the filename it resolved to. + * This returns a diagnostic even if the module will be an untyped module. + */ + function getResolutionDiagnostic(options, _a) { + var extension = _a.extension; + switch (extension) { + case ".ts" /* Ts */: + case ".d.ts" /* Dts */: + // These are always allowed. + return undefined; + case ".tsx" /* Tsx */: + return needJsx(); + case ".jsx" /* Jsx */: + return needJsx() || needAllowJs(); + case ".js" /* Js */: + return needAllowJs(); + case ".json" /* Json */: + return needResolveJsonModule(); + } + function needJsx() { + return options.jsx ? undefined : ts.Diagnostics.Module_0_was_resolved_to_1_but_jsx_is_not_set; + } + function needAllowJs() { + return options.allowJs || !ts.getStrictOptionValue(options, "noImplicitAny") ? undefined : ts.Diagnostics.Could_not_find_a_declaration_file_for_module_0_1_implicitly_has_an_any_type; + } + function needResolveJsonModule() { + return options.resolveJsonModule ? undefined : ts.Diagnostics.Module_0_was_resolved_to_1_but_resolveJsonModule_is_not_used; + } + } + ts.getResolutionDiagnostic = getResolutionDiagnostic; + function getModuleNames(_a) { + var imports = _a.imports, moduleAugmentations = _a.moduleAugmentations; + var res = imports.map(function (i) { return i.text; }); + for (var _i = 0, moduleAugmentations_1 = moduleAugmentations; _i < moduleAugmentations_1.length; _i++) { + var aug = moduleAugmentations_1[_i]; + if (aug.kind === 10 /* StringLiteral */) { + res.push(aug.text); + } + // Do nothing if it's an Identifier; we don't need to do module resolution for `declare global`. + } + return res; + } +})(ts || (ts = {})); +/*@internal*/ +var ts; +(function (ts) { + function getFileEmitOutput(program, sourceFile, emitOnlyDtsFiles, cancellationToken, customTransformers, forceDtsEmit) { + var outputFiles = []; + var _a = program.emit(sourceFile, writeFile, cancellationToken, emitOnlyDtsFiles, customTransformers, forceDtsEmit), emitSkipped = _a.emitSkipped, diagnostics = _a.diagnostics, exportedModulesFromDeclarationEmit = _a.exportedModulesFromDeclarationEmit; + return { outputFiles: outputFiles, emitSkipped: emitSkipped, diagnostics: diagnostics, exportedModulesFromDeclarationEmit: exportedModulesFromDeclarationEmit }; + function writeFile(fileName, text, writeByteOrderMark) { + outputFiles.push({ name: fileName, writeByteOrderMark: writeByteOrderMark, text: text }); + } + } + ts.getFileEmitOutput = getFileEmitOutput; + var BuilderState; + (function (BuilderState) { + /** + * Get the referencedFile from the imported module symbol + */ + function getReferencedFileFromImportedModuleSymbol(symbol) { + if (symbol.declarations && symbol.declarations[0]) { + var declarationSourceFile = ts.getSourceFileOfNode(symbol.declarations[0]); + return declarationSourceFile && declarationSourceFile.resolvedPath; + } + } + /** + * Get the referencedFile from the import name node from file + */ + function getReferencedFileFromImportLiteral(checker, importName) { + var symbol = checker.getSymbolAtLocation(importName); + return symbol && getReferencedFileFromImportedModuleSymbol(symbol); + } + /** + * Gets the path to reference file from file name, it could be resolvedPath if present otherwise path + */ + function getReferencedFileFromFileName(program, fileName, sourceFileDirectory, getCanonicalFileName) { + return ts.toPath(program.getProjectReferenceRedirect(fileName) || fileName, sourceFileDirectory, getCanonicalFileName); + } + /** + * Gets the referenced files for a file from the program with values for the keys as referenced file's path to be true + */ + function getReferencedFiles(program, sourceFile, getCanonicalFileName) { + var referencedFiles; + // We need to use a set here since the code can contain the same import twice, + // but that will only be one dependency. + // To avoid invernal conversion, the key of the referencedFiles map must be of type Path + if (sourceFile.imports && sourceFile.imports.length > 0) { + var checker = program.getTypeChecker(); + for (var _i = 0, _a = sourceFile.imports; _i < _a.length; _i++) { + var importName = _a[_i]; + var declarationSourceFilePath = getReferencedFileFromImportLiteral(checker, importName); + if (declarationSourceFilePath) { + addReferencedFile(declarationSourceFilePath); + } + } + } + var sourceFileDirectory = ts.getDirectoryPath(sourceFile.resolvedPath); + // Handle triple slash references + if (sourceFile.referencedFiles && sourceFile.referencedFiles.length > 0) { + for (var _b = 0, _c = sourceFile.referencedFiles; _b < _c.length; _b++) { + var referencedFile = _c[_b]; + var referencedPath = getReferencedFileFromFileName(program, referencedFile.fileName, sourceFileDirectory, getCanonicalFileName); + addReferencedFile(referencedPath); + } + } + // Handle type reference directives + if (sourceFile.resolvedTypeReferenceDirectiveNames) { + sourceFile.resolvedTypeReferenceDirectiveNames.forEach(function (resolvedTypeReferenceDirective) { + if (!resolvedTypeReferenceDirective) { + return; + } + var fileName = resolvedTypeReferenceDirective.resolvedFileName; // TODO: GH#18217 + var typeFilePath = getReferencedFileFromFileName(program, fileName, sourceFileDirectory, getCanonicalFileName); + addReferencedFile(typeFilePath); + }); + } + // Add module augmentation as references + if (sourceFile.moduleAugmentations.length) { + var checker = program.getTypeChecker(); + for (var _d = 0, _e = sourceFile.moduleAugmentations; _d < _e.length; _d++) { + var moduleName = _e[_d]; + if (!ts.isStringLiteral(moduleName)) { + continue; + } + var symbol = checker.getSymbolAtLocation(moduleName); + if (!symbol) { + continue; + } + // Add any file other than our own as reference + addReferenceFromAmbientModule(symbol); + } + } + // From ambient modules + for (var _f = 0, _g = program.getTypeChecker().getAmbientModules(); _f < _g.length; _f++) { + var ambientModule = _g[_f]; + if (ambientModule.declarations.length > 1) { + addReferenceFromAmbientModule(ambientModule); + } + } + return referencedFiles; + function addReferenceFromAmbientModule(symbol) { + // Add any file other than our own as reference + for (var _i = 0, _a = symbol.declarations; _i < _a.length; _i++) { + var declaration = _a[_i]; + var declarationSourceFile = ts.getSourceFileOfNode(declaration); + if (declarationSourceFile && + declarationSourceFile !== sourceFile) { + addReferencedFile(declarationSourceFile.resolvedPath); + } + } + } + function addReferencedFile(referencedPath) { + if (!referencedFiles) { + referencedFiles = ts.createMap(); + } + referencedFiles.set(referencedPath, true); + } + } + /** + * Returns true if oldState is reusable, that is the emitKind = module/non module has not changed + */ + function canReuseOldState(newReferencedMap, oldState) { + return oldState && !oldState.referencedMap === !newReferencedMap; + } + BuilderState.canReuseOldState = canReuseOldState; + /** + * Creates the state of file references and signature for the new program from oldState if it is safe + */ + function create(newProgram, getCanonicalFileName, oldState) { + var fileInfos = ts.createMap(); + var referencedMap = newProgram.getCompilerOptions().module !== ts.ModuleKind.None ? ts.createMap() : undefined; + var exportedModulesMap = referencedMap ? ts.createMap() : undefined; + var hasCalledUpdateShapeSignature = ts.createMap(); + var useOldState = canReuseOldState(referencedMap, oldState); + // Create the reference map, and set the file infos + for (var _i = 0, _a = newProgram.getSourceFiles(); _i < _a.length; _i++) { + var sourceFile = _a[_i]; + var version_1 = ts.Debug.checkDefined(sourceFile.version, "Program intended to be used with Builder should have source files with versions set"); + var oldInfo = useOldState ? oldState.fileInfos.get(sourceFile.resolvedPath) : undefined; + if (referencedMap) { + var newReferences = getReferencedFiles(newProgram, sourceFile, getCanonicalFileName); + if (newReferences) { + referencedMap.set(sourceFile.resolvedPath, newReferences); + } + // Copy old visible to outside files map + if (useOldState) { + var exportedModules = oldState.exportedModulesMap.get(sourceFile.resolvedPath); + if (exportedModules) { + exportedModulesMap.set(sourceFile.resolvedPath, exportedModules); + } + } + } + fileInfos.set(sourceFile.resolvedPath, { version: version_1, signature: oldInfo && oldInfo.signature, affectsGlobalScope: isFileAffectingGlobalScope(sourceFile) }); + } + return { + fileInfos: fileInfos, + referencedMap: referencedMap, + exportedModulesMap: exportedModulesMap, + hasCalledUpdateShapeSignature: hasCalledUpdateShapeSignature + }; + } + BuilderState.create = create; + /** + * Releases needed properties + */ + function releaseCache(state) { + state.allFilesExcludingDefaultLibraryFile = undefined; + state.allFileNames = undefined; + } + BuilderState.releaseCache = releaseCache; + /** + * Creates a clone of the state + */ + function clone(state) { + var fileInfos = ts.createMap(); + state.fileInfos.forEach(function (value, key) { + fileInfos.set(key, __assign({}, value)); + }); + // Dont need to backup allFiles info since its cache anyway + return { + fileInfos: fileInfos, + referencedMap: cloneMapOrUndefined(state.referencedMap), + exportedModulesMap: cloneMapOrUndefined(state.exportedModulesMap), + hasCalledUpdateShapeSignature: ts.cloneMap(state.hasCalledUpdateShapeSignature), + }; + } + BuilderState.clone = clone; + /** + * Gets the files affected by the path from the program + */ + function getFilesAffectedBy(state, programOfThisState, path, cancellationToken, computeHash, cacheToUpdateSignature, exportedModulesMapCache) { + // Since the operation could be cancelled, the signatures are always stored in the cache + // They will be committed once it is safe to use them + // eg when calling this api from tsserver, if there is no cancellation of the operation + // In the other cases the affected files signatures are committed only after the iteration through the result is complete + var signatureCache = cacheToUpdateSignature || ts.createMap(); + var sourceFile = programOfThisState.getSourceFileByPath(path); + if (!sourceFile) { + return ts.emptyArray; + } + if (!updateShapeSignature(state, programOfThisState, sourceFile, signatureCache, cancellationToken, computeHash, exportedModulesMapCache)) { + return [sourceFile]; + } + var result = (state.referencedMap ? getFilesAffectedByUpdatedShapeWhenModuleEmit : getFilesAffectedByUpdatedShapeWhenNonModuleEmit)(state, programOfThisState, sourceFile, signatureCache, cancellationToken, computeHash, exportedModulesMapCache); + if (!cacheToUpdateSignature) { + // Commit all the signatures in the signature cache + updateSignaturesFromCache(state, signatureCache); + } + return result; + } + BuilderState.getFilesAffectedBy = getFilesAffectedBy; + /** + * Updates the signatures from the cache into state's fileinfo signatures + * This should be called whenever it is safe to commit the state of the builder + */ + function updateSignaturesFromCache(state, signatureCache) { + signatureCache.forEach(function (signature, path) { return updateSignatureOfFile(state, signature, path); }); + } + BuilderState.updateSignaturesFromCache = updateSignaturesFromCache; + function updateSignatureOfFile(state, signature, path) { + state.fileInfos.get(path).signature = signature; + state.hasCalledUpdateShapeSignature.set(path, true); + } + BuilderState.updateSignatureOfFile = updateSignatureOfFile; + /** + * Returns if the shape of the signature has changed since last emit + */ + function updateShapeSignature(state, programOfThisState, sourceFile, cacheToUpdateSignature, cancellationToken, computeHash, exportedModulesMapCache) { + ts.Debug.assert(!!sourceFile); + ts.Debug.assert(!exportedModulesMapCache || !!state.exportedModulesMap, "Compute visible to outside map only if visibleToOutsideReferencedMap present in the state"); + // If we have cached the result for this file, that means hence forth we should assume file shape is uptodate + if (state.hasCalledUpdateShapeSignature.has(sourceFile.resolvedPath) || cacheToUpdateSignature.has(sourceFile.resolvedPath)) { + return false; + } + var info = state.fileInfos.get(sourceFile.resolvedPath); + if (!info) + return ts.Debug.fail(); + var prevSignature = info.signature; + var latestSignature; + if (sourceFile.isDeclarationFile) { + latestSignature = sourceFile.version; + if (exportedModulesMapCache && latestSignature !== prevSignature) { + // All the references in this file are exported + var references = state.referencedMap ? state.referencedMap.get(sourceFile.resolvedPath) : undefined; + exportedModulesMapCache.set(sourceFile.resolvedPath, references || false); + } + } + else { + var emitOutput_1 = getFileEmitOutput(programOfThisState, sourceFile, + /*emitOnlyDtsFiles*/ true, cancellationToken, + /*customTransformers*/ undefined, + /*forceDtsEmit*/ true); + var firstDts_1 = emitOutput_1.outputFiles && + programOfThisState.getCompilerOptions().declarationMap ? + emitOutput_1.outputFiles.length > 1 ? emitOutput_1.outputFiles[1] : undefined : + emitOutput_1.outputFiles.length > 0 ? emitOutput_1.outputFiles[0] : undefined; + if (firstDts_1) { + ts.Debug.assert(ts.fileExtensionIs(firstDts_1.name, ".d.ts" /* Dts */), "File extension for signature expected to be dts", function () { return "Found: " + ts.getAnyExtensionFromPath(firstDts_1.name) + " for " + firstDts_1.name + ":: All output files: " + JSON.stringify(emitOutput_1.outputFiles.map(function (f) { return f.name; })); }); + latestSignature = computeHash(firstDts_1.text); + if (exportedModulesMapCache && latestSignature !== prevSignature) { + updateExportedModules(sourceFile, emitOutput_1.exportedModulesFromDeclarationEmit, exportedModulesMapCache); + } + } + else { + latestSignature = prevSignature; // TODO: GH#18217 + } + } + cacheToUpdateSignature.set(sourceFile.resolvedPath, latestSignature); + return !prevSignature || latestSignature !== prevSignature; + } + BuilderState.updateShapeSignature = updateShapeSignature; + /** + * Coverts the declaration emit result into exported modules map + */ + function updateExportedModules(sourceFile, exportedModulesFromDeclarationEmit, exportedModulesMapCache) { + if (!exportedModulesFromDeclarationEmit) { + exportedModulesMapCache.set(sourceFile.resolvedPath, false); + return; + } + var exportedModules; + exportedModulesFromDeclarationEmit.forEach(function (symbol) { return addExportedModule(getReferencedFileFromImportedModuleSymbol(symbol)); }); + exportedModulesMapCache.set(sourceFile.resolvedPath, exportedModules || false); + function addExportedModule(exportedModulePath) { + if (exportedModulePath) { + if (!exportedModules) { + exportedModules = ts.createMap(); + } + exportedModules.set(exportedModulePath, true); + } + } + } + /** + * Updates the exported modules from cache into state's exported modules map + * This should be called whenever it is safe to commit the state of the builder + */ + function updateExportedFilesMapFromCache(state, exportedModulesMapCache) { + if (exportedModulesMapCache) { + ts.Debug.assert(!!state.exportedModulesMap); + exportedModulesMapCache.forEach(function (exportedModules, path) { + if (exportedModules) { + state.exportedModulesMap.set(path, exportedModules); + } + else { + state.exportedModulesMap.delete(path); + } + }); + } + } + BuilderState.updateExportedFilesMapFromCache = updateExportedFilesMapFromCache; + /** + * Get all the dependencies of the sourceFile + */ + function getAllDependencies(state, programOfThisState, sourceFile) { + var compilerOptions = programOfThisState.getCompilerOptions(); + // With --out or --outFile all outputs go into single file, all files depend on each other + if (compilerOptions.outFile || compilerOptions.out) { + return getAllFileNames(state, programOfThisState); + } + // If this is non module emit, or its a global file, it depends on all the source files + if (!state.referencedMap || isFileAffectingGlobalScope(sourceFile)) { + return getAllFileNames(state, programOfThisState); + } + // Get the references, traversing deep from the referenceMap + var seenMap = ts.createMap(); + var queue = [sourceFile.resolvedPath]; + while (queue.length) { + var path = queue.pop(); + if (!seenMap.has(path)) { + seenMap.set(path, true); + var references = state.referencedMap.get(path); + if (references) { + var iterator = references.keys(); + for (var iterResult = iterator.next(); !iterResult.done; iterResult = iterator.next()) { + queue.push(iterResult.value); + } + } + } + } + return ts.arrayFrom(ts.mapDefinedIterator(seenMap.keys(), function (path) { + var file = programOfThisState.getSourceFileByPath(path); + return file ? file.fileName : path; + })); + } + BuilderState.getAllDependencies = getAllDependencies; + /** + * Gets the names of all files from the program + */ + function getAllFileNames(state, programOfThisState) { + if (!state.allFileNames) { + var sourceFiles = programOfThisState.getSourceFiles(); + state.allFileNames = sourceFiles === ts.emptyArray ? ts.emptyArray : sourceFiles.map(function (file) { return file.fileName; }); + } + return state.allFileNames; + } + /** + * Gets the files referenced by the the file path + */ + function getReferencedByPaths(state, referencedFilePath) { + return ts.arrayFrom(ts.mapDefinedIterator(state.referencedMap.entries(), function (_a) { + var filePath = _a[0], referencesInFile = _a[1]; + return referencesInFile.has(referencedFilePath) ? filePath : undefined; + })); + } + BuilderState.getReferencedByPaths = getReferencedByPaths; + /** + * For script files that contains only ambient external modules, although they are not actually external module files, + * they can only be consumed via importing elements from them. Regular script files cannot consume them. Therefore, + * there are no point to rebuild all script files if these special files have changed. However, if any statement + * in the file is not ambient external module, we treat it as a regular script file. + */ + function containsOnlyAmbientModules(sourceFile) { + for (var _i = 0, _a = sourceFile.statements; _i < _a.length; _i++) { + var statement = _a[_i]; + if (!ts.isModuleWithStringLiteralName(statement)) { + return false; + } + } + return true; + } + /** + * Return true if file contains anything that augments to global scope we need to build them as if + * they are global files as well as module + */ + function containsGlobalScopeAugmentation(sourceFile) { + return ts.some(sourceFile.moduleAugmentations, function (augmentation) { return ts.isGlobalScopeAugmentation(augmentation.parent); }); + } + /** + * Return true if the file will invalidate all files because it affectes global scope + */ + function isFileAffectingGlobalScope(sourceFile) { + return containsGlobalScopeAugmentation(sourceFile) || + !ts.isExternalModule(sourceFile) && !containsOnlyAmbientModules(sourceFile); + } + /** + * Gets all files of the program excluding the default library file + */ + function getAllFilesExcludingDefaultLibraryFile(state, programOfThisState, firstSourceFile) { + // Use cached result + if (state.allFilesExcludingDefaultLibraryFile) { + return state.allFilesExcludingDefaultLibraryFile; + } + var result; + if (firstSourceFile) + addSourceFile(firstSourceFile); + for (var _i = 0, _a = programOfThisState.getSourceFiles(); _i < _a.length; _i++) { + var sourceFile = _a[_i]; + if (sourceFile !== firstSourceFile) { + addSourceFile(sourceFile); + } + } + state.allFilesExcludingDefaultLibraryFile = result || ts.emptyArray; + return state.allFilesExcludingDefaultLibraryFile; + function addSourceFile(sourceFile) { + if (!programOfThisState.isSourceFileDefaultLibrary(sourceFile)) { + (result || (result = [])).push(sourceFile); + } + } + } + BuilderState.getAllFilesExcludingDefaultLibraryFile = getAllFilesExcludingDefaultLibraryFile; + /** + * When program emits non modular code, gets the files affected by the sourceFile whose shape has changed + */ + function getFilesAffectedByUpdatedShapeWhenNonModuleEmit(state, programOfThisState, sourceFileWithUpdatedShape) { + var compilerOptions = programOfThisState.getCompilerOptions(); + // If `--out` or `--outFile` is specified, any new emit will result in re-emitting the entire project, + // so returning the file itself is good enough. + if (compilerOptions && (compilerOptions.out || compilerOptions.outFile)) { + return [sourceFileWithUpdatedShape]; + } + return getAllFilesExcludingDefaultLibraryFile(state, programOfThisState, sourceFileWithUpdatedShape); + } + /** + * When program emits modular code, gets the files affected by the sourceFile whose shape has changed + */ + function getFilesAffectedByUpdatedShapeWhenModuleEmit(state, programOfThisState, sourceFileWithUpdatedShape, cacheToUpdateSignature, cancellationToken, computeHash, exportedModulesMapCache) { + if (isFileAffectingGlobalScope(sourceFileWithUpdatedShape)) { + return getAllFilesExcludingDefaultLibraryFile(state, programOfThisState, sourceFileWithUpdatedShape); + } + var compilerOptions = programOfThisState.getCompilerOptions(); + if (compilerOptions && (compilerOptions.isolatedModules || compilerOptions.out || compilerOptions.outFile)) { + return [sourceFileWithUpdatedShape]; + } + // Now we need to if each file in the referencedBy list has a shape change as well. + // Because if so, its own referencedBy files need to be saved as well to make the + // emitting result consistent with files on disk. + var seenFileNamesMap = ts.createMap(); + // Start with the paths this file was referenced by + seenFileNamesMap.set(sourceFileWithUpdatedShape.resolvedPath, sourceFileWithUpdatedShape); + var queue = getReferencedByPaths(state, sourceFileWithUpdatedShape.resolvedPath); + while (queue.length > 0) { + var currentPath = queue.pop(); + if (!seenFileNamesMap.has(currentPath)) { + var currentSourceFile = programOfThisState.getSourceFileByPath(currentPath); + seenFileNamesMap.set(currentPath, currentSourceFile); + if (currentSourceFile && updateShapeSignature(state, programOfThisState, currentSourceFile, cacheToUpdateSignature, cancellationToken, computeHash, exportedModulesMapCache)) { // TODO: GH#18217 + queue.push.apply(// TODO: GH#18217 + queue, getReferencedByPaths(state, currentSourceFile.resolvedPath)); + } + } + } + // Return array of values that needs emit + // Return array of values that needs emit + return ts.arrayFrom(ts.mapDefinedIterator(seenFileNamesMap.values(), function (value) { return value; })); + } + })(BuilderState = ts.BuilderState || (ts.BuilderState = {})); + function cloneMapOrUndefined(map) { + return map ? ts.cloneMap(map) : undefined; + } + ts.cloneMapOrUndefined = cloneMapOrUndefined; +})(ts || (ts = {})); +/*@internal*/ +var ts; +(function (ts) { + var BuilderFileEmit; + (function (BuilderFileEmit) { + BuilderFileEmit[BuilderFileEmit["DtsOnly"] = 0] = "DtsOnly"; + BuilderFileEmit[BuilderFileEmit["Full"] = 1] = "Full"; + })(BuilderFileEmit = ts.BuilderFileEmit || (ts.BuilderFileEmit = {})); + function hasSameKeys(map1, map2) { + // Has same size and every key is present in both maps + return map1 === map2 || map1 !== undefined && map2 !== undefined && map1.size === map2.size && !ts.forEachKey(map1, function (key) { return !map2.has(key); }); + } + /** + * Create the state so that we can iterate on changedFiles/affected files + */ + function createBuilderProgramState(newProgram, getCanonicalFileName, oldState) { + var state = ts.BuilderState.create(newProgram, getCanonicalFileName, oldState); + state.program = newProgram; + var compilerOptions = newProgram.getCompilerOptions(); + state.compilerOptions = compilerOptions; + // With --out or --outFile, any change affects all semantic diagnostics so no need to cache them + if (!compilerOptions.outFile && !compilerOptions.out) { + state.semanticDiagnosticsPerFile = ts.createMap(); + } + state.changedFilesSet = ts.createMap(); + var useOldState = ts.BuilderState.canReuseOldState(state.referencedMap, oldState); + var oldCompilerOptions = useOldState ? oldState.compilerOptions : undefined; + var canCopySemanticDiagnostics = useOldState && oldState.semanticDiagnosticsPerFile && !!state.semanticDiagnosticsPerFile && + !ts.compilerOptionsAffectSemanticDiagnostics(compilerOptions, oldCompilerOptions); + if (useOldState) { + // Verify the sanity of old state + if (!oldState.currentChangedFilePath) { + var affectedSignatures = oldState.currentAffectedFilesSignatures; + ts.Debug.assert(!oldState.affectedFiles && (!affectedSignatures || !affectedSignatures.size), "Cannot reuse if only few affected files of currentChangedFile were iterated"); + } + var changedFilesSet = oldState.changedFilesSet; + if (canCopySemanticDiagnostics) { + ts.Debug.assert(!changedFilesSet || !ts.forEachKey(changedFilesSet, function (path) { return oldState.semanticDiagnosticsPerFile.has(path); }), "Semantic diagnostics shouldnt be available for changed files"); + } + // Copy old state's changed files set + if (changedFilesSet) { + ts.copyEntries(changedFilesSet, state.changedFilesSet); + } + if (!compilerOptions.outFile && !compilerOptions.out && oldState.affectedFilesPendingEmit) { + state.affectedFilesPendingEmit = oldState.affectedFilesPendingEmit.slice(); + state.affectedFilesPendingEmitKind = ts.cloneMapOrUndefined(oldState.affectedFilesPendingEmitKind); + state.affectedFilesPendingEmitIndex = oldState.affectedFilesPendingEmitIndex; + state.seenAffectedFiles = ts.createMap(); + } + } + // Update changed files and copy semantic diagnostics if we can + var referencedMap = state.referencedMap; + var oldReferencedMap = useOldState ? oldState.referencedMap : undefined; + var copyDeclarationFileDiagnostics = canCopySemanticDiagnostics && !compilerOptions.skipLibCheck === !oldCompilerOptions.skipLibCheck; + var copyLibFileDiagnostics = copyDeclarationFileDiagnostics && !compilerOptions.skipDefaultLibCheck === !oldCompilerOptions.skipDefaultLibCheck; + state.fileInfos.forEach(function (info, sourceFilePath) { + var oldInfo; + var newReferences; + // if not using old state, every file is changed + if (!useOldState || + // File wasnt present in old state + !(oldInfo = oldState.fileInfos.get(sourceFilePath)) || + // versions dont match + oldInfo.version !== info.version || + // Referenced files changed + !hasSameKeys(newReferences = referencedMap && referencedMap.get(sourceFilePath), oldReferencedMap && oldReferencedMap.get(sourceFilePath)) || + // Referenced file was deleted in the new program + newReferences && ts.forEachKey(newReferences, function (path) { return !state.fileInfos.has(path) && oldState.fileInfos.has(path); })) { + // Register file as changed file and do not copy semantic diagnostics, since all changed files need to be re-evaluated + state.changedFilesSet.set(sourceFilePath, true); + } + else if (canCopySemanticDiagnostics) { + var sourceFile = newProgram.getSourceFileByPath(sourceFilePath); + if (sourceFile.isDeclarationFile && !copyDeclarationFileDiagnostics) { + return; + } + if (sourceFile.hasNoDefaultLib && !copyLibFileDiagnostics) { + return; + } + // Unchanged file copy diagnostics + var diagnostics = oldState.semanticDiagnosticsPerFile.get(sourceFilePath); + if (diagnostics) { + state.semanticDiagnosticsPerFile.set(sourceFilePath, oldState.hasReusableDiagnostic ? convertToDiagnostics(diagnostics, newProgram, getCanonicalFileName) : diagnostics); + if (!state.semanticDiagnosticsFromOldState) { + state.semanticDiagnosticsFromOldState = ts.createMap(); + } + state.semanticDiagnosticsFromOldState.set(sourceFilePath, true); + } + } + }); + // If the global file is removed, add all files as changed + if (useOldState && ts.forEachEntry(oldState.fileInfos, function (info, sourceFilePath) { return info.affectsGlobalScope && !state.fileInfos.has(sourceFilePath); })) { + ts.BuilderState.getAllFilesExcludingDefaultLibraryFile(state, newProgram, /*firstSourceFile*/ undefined) + .forEach(function (file) { return state.changedFilesSet.set(file.resolvedPath, true); }); + } + else if (oldCompilerOptions && ts.compilerOptionsAffectEmit(compilerOptions, oldCompilerOptions)) { + // Add all files to affectedFilesPendingEmit since emit changed + newProgram.getSourceFiles().forEach(function (f) { return addToAffectedFilesPendingEmit(state, f.resolvedPath, 1 /* Full */); }); + ts.Debug.assert(!state.seenAffectedFiles || !state.seenAffectedFiles.size); + state.seenAffectedFiles = state.seenAffectedFiles || ts.createMap(); + } + state.emittedBuildInfo = !state.changedFilesSet.size && !state.affectedFilesPendingEmit; + return state; + } + function convertToDiagnostics(diagnostics, newProgram, getCanonicalFileName) { + if (!diagnostics.length) + return ts.emptyArray; + var buildInfoDirectory = ts.getDirectoryPath(ts.getNormalizedAbsolutePath(ts.getTsBuildInfoEmitOutputFilePath(newProgram.getCompilerOptions()), newProgram.getCurrentDirectory())); + return diagnostics.map(function (diagnostic) { + var result = convertToDiagnosticRelatedInformation(diagnostic, newProgram, toPath); + result.reportsUnnecessary = diagnostic.reportsUnnecessary; + result.source = diagnostic.source; + var relatedInformation = diagnostic.relatedInformation; + result.relatedInformation = relatedInformation ? + relatedInformation.length ? + relatedInformation.map(function (r) { return convertToDiagnosticRelatedInformation(r, newProgram, toPath); }) : + ts.emptyArray : + undefined; + return result; + }); + function toPath(path) { + return ts.toPath(path, buildInfoDirectory, getCanonicalFileName); + } + } + function convertToDiagnosticRelatedInformation(diagnostic, newProgram, toPath) { + var file = diagnostic.file; + return __assign(__assign({}, diagnostic), { file: file ? newProgram.getSourceFileByPath(toPath(file)) : undefined }); + } + /** + * Releases program and other related not needed properties + */ + function releaseCache(state) { + ts.BuilderState.releaseCache(state); + state.program = undefined; + } + /** + * Creates a clone of the state + */ + function cloneBuilderProgramState(state) { + var newState = ts.BuilderState.clone(state); + newState.semanticDiagnosticsPerFile = ts.cloneMapOrUndefined(state.semanticDiagnosticsPerFile); + newState.changedFilesSet = ts.cloneMap(state.changedFilesSet); + newState.affectedFiles = state.affectedFiles; + newState.affectedFilesIndex = state.affectedFilesIndex; + newState.currentChangedFilePath = state.currentChangedFilePath; + newState.currentAffectedFilesSignatures = ts.cloneMapOrUndefined(state.currentAffectedFilesSignatures); + newState.currentAffectedFilesExportedModulesMap = ts.cloneMapOrUndefined(state.currentAffectedFilesExportedModulesMap); + newState.seenAffectedFiles = ts.cloneMapOrUndefined(state.seenAffectedFiles); + newState.cleanedDiagnosticsOfLibFiles = state.cleanedDiagnosticsOfLibFiles; + newState.semanticDiagnosticsFromOldState = ts.cloneMapOrUndefined(state.semanticDiagnosticsFromOldState); + newState.program = state.program; + newState.compilerOptions = state.compilerOptions; + newState.affectedFilesPendingEmit = state.affectedFilesPendingEmit && state.affectedFilesPendingEmit.slice(); + newState.affectedFilesPendingEmitKind = ts.cloneMapOrUndefined(state.affectedFilesPendingEmitKind); + newState.affectedFilesPendingEmitIndex = state.affectedFilesPendingEmitIndex; + newState.seenEmittedFiles = ts.cloneMapOrUndefined(state.seenEmittedFiles); + newState.programEmitComplete = state.programEmitComplete; + return newState; + } + /** + * Verifies that source file is ok to be used in calls that arent handled by next + */ + function assertSourceFileOkWithoutNextAffectedCall(state, sourceFile) { + ts.Debug.assert(!sourceFile || !state.affectedFiles || state.affectedFiles[state.affectedFilesIndex - 1] !== sourceFile || !state.semanticDiagnosticsPerFile.has(sourceFile.resolvedPath)); + } + /** + * This function returns the next affected file to be processed. + * Note that until doneAffected is called it would keep reporting same result + * This is to allow the callers to be able to actually remove affected file only when the operation is complete + * eg. if during diagnostics check cancellation token ends up cancelling the request, the affected file should be retained + */ + function getNextAffectedFile(state, cancellationToken, computeHash) { + while (true) { + var affectedFiles = state.affectedFiles; + if (affectedFiles) { + var seenAffectedFiles = state.seenAffectedFiles; + var affectedFilesIndex = state.affectedFilesIndex; // TODO: GH#18217 + while (affectedFilesIndex < affectedFiles.length) { + var affectedFile = affectedFiles[affectedFilesIndex]; + if (!seenAffectedFiles.has(affectedFile.resolvedPath)) { + // Set the next affected file as seen and remove the cached semantic diagnostics + state.affectedFilesIndex = affectedFilesIndex; + handleDtsMayChangeOfAffectedFile(state, affectedFile, cancellationToken, computeHash); + return affectedFile; + } + affectedFilesIndex++; + } + // Remove the changed file from the change set + state.changedFilesSet.delete(state.currentChangedFilePath); + state.currentChangedFilePath = undefined; + // Commit the changes in file signature + ts.BuilderState.updateSignaturesFromCache(state, state.currentAffectedFilesSignatures); + state.currentAffectedFilesSignatures.clear(); + ts.BuilderState.updateExportedFilesMapFromCache(state, state.currentAffectedFilesExportedModulesMap); + state.affectedFiles = undefined; + } + // Get next changed file + var nextKey = state.changedFilesSet.keys().next(); + if (nextKey.done) { + // Done + return undefined; + } + // With --out or --outFile all outputs go into single file + // so operations are performed directly on program, return program + var program = ts.Debug.checkDefined(state.program); + var compilerOptions = program.getCompilerOptions(); + if (compilerOptions.outFile || compilerOptions.out) { + ts.Debug.assert(!state.semanticDiagnosticsPerFile); + return program; + } + // Get next batch of affected files + state.currentAffectedFilesSignatures = state.currentAffectedFilesSignatures || ts.createMap(); + if (state.exportedModulesMap) { + state.currentAffectedFilesExportedModulesMap = state.currentAffectedFilesExportedModulesMap || ts.createMap(); + } + state.affectedFiles = ts.BuilderState.getFilesAffectedBy(state, program, nextKey.value, cancellationToken, computeHash, state.currentAffectedFilesSignatures, state.currentAffectedFilesExportedModulesMap); + state.currentChangedFilePath = nextKey.value; + state.affectedFilesIndex = 0; + state.seenAffectedFiles = state.seenAffectedFiles || ts.createMap(); + } + } + /** + * Returns next file to be emitted from files that retrieved semantic diagnostics but did not emit yet + */ + function getNextAffectedFilePendingEmit(state) { + var affectedFilesPendingEmit = state.affectedFilesPendingEmit; + if (affectedFilesPendingEmit) { + var seenEmittedFiles = state.seenEmittedFiles || (state.seenEmittedFiles = ts.createMap()); + for (var i = state.affectedFilesPendingEmitIndex; i < affectedFilesPendingEmit.length; i++) { + var affectedFile = ts.Debug.checkDefined(state.program).getSourceFileByPath(affectedFilesPendingEmit[i]); + if (affectedFile) { + var seenKind = seenEmittedFiles.get(affectedFile.resolvedPath); + var emitKind = ts.Debug.checkDefined(ts.Debug.checkDefined(state.affectedFilesPendingEmitKind).get(affectedFile.resolvedPath)); + if (seenKind === undefined || seenKind < emitKind) { + // emit this file + state.affectedFilesPendingEmitIndex = i; + return { affectedFile: affectedFile, emitKind: emitKind }; + } + } + } + state.affectedFilesPendingEmit = undefined; + state.affectedFilesPendingEmitKind = undefined; + state.affectedFilesPendingEmitIndex = undefined; + } + return undefined; + } + /** + * Handles semantic diagnostics and dts emit for affectedFile and files, that are referencing modules that export entities from affected file + * This is because even though js emit doesnt change, dts emit / type used can change resulting in need for dts emit and js change + */ + function handleDtsMayChangeOfAffectedFile(state, affectedFile, cancellationToken, computeHash) { + removeSemanticDiagnosticsOf(state, affectedFile.resolvedPath); + // If affected files is everything except default library, then nothing more to do + if (state.allFilesExcludingDefaultLibraryFile === state.affectedFiles) { + if (!state.cleanedDiagnosticsOfLibFiles) { + state.cleanedDiagnosticsOfLibFiles = true; + var program_1 = ts.Debug.checkDefined(state.program); + var options_2 = program_1.getCompilerOptions(); + ts.forEach(program_1.getSourceFiles(), function (f) { + return program_1.isSourceFileDefaultLibrary(f) && + !ts.skipTypeChecking(f, options_2, program_1) && + removeSemanticDiagnosticsOf(state, f.resolvedPath); + }); + } + return; + } + if (!state.compilerOptions.assumeChangesOnlyAffectDirectDependencies) { + forEachReferencingModulesOfExportOfAffectedFile(state, affectedFile, function (state, path) { return handleDtsMayChangeOf(state, path, cancellationToken, computeHash); }); + } + } + /** + * Handle the dts may change, so they need to be added to pending emit if dts emit is enabled, + * Also we need to make sure signature is updated for these files + */ + function handleDtsMayChangeOf(state, path, cancellationToken, computeHash) { + removeSemanticDiagnosticsOf(state, path); + if (!state.changedFilesSet.has(path)) { + var program = ts.Debug.checkDefined(state.program); + var sourceFile = program.getSourceFileByPath(path); + if (sourceFile) { + // Even though the js emit doesnt change and we are already handling dts emit and semantic diagnostics + // we need to update the signature to reflect correctness of the signature(which is output d.ts emit) of this file + // This ensures that we dont later during incremental builds considering wrong signature. + // Eg where this also is needed to ensure that .tsbuildinfo generated by incremental build should be same as if it was first fresh build + ts.BuilderState.updateShapeSignature(state, program, sourceFile, ts.Debug.checkDefined(state.currentAffectedFilesSignatures), cancellationToken, computeHash, state.currentAffectedFilesExportedModulesMap); + // If not dts emit, nothing more to do + if (ts.getEmitDeclarations(state.compilerOptions)) { + addToAffectedFilesPendingEmit(state, path, 0 /* DtsOnly */); + } + } + } + return false; + } + /** + * Removes semantic diagnostics for path and + * returns true if there are no more semantic diagnostics from the old state + */ + function removeSemanticDiagnosticsOf(state, path) { + if (!state.semanticDiagnosticsFromOldState) { + return true; + } + state.semanticDiagnosticsFromOldState.delete(path); + state.semanticDiagnosticsPerFile.delete(path); + return !state.semanticDiagnosticsFromOldState.size; + } + function isChangedSignagure(state, path) { + var newSignature = ts.Debug.checkDefined(state.currentAffectedFilesSignatures).get(path); + var oldSignagure = ts.Debug.checkDefined(state.fileInfos.get(path)).signature; + return newSignature !== oldSignagure; + } + /** + * Iterate on referencing modules that export entities from affected file + */ + function forEachReferencingModulesOfExportOfAffectedFile(state, affectedFile, fn) { + // If there was change in signature (dts output) for the changed file, + // then only we need to handle pending file emit + if (!state.exportedModulesMap || !state.changedFilesSet.has(affectedFile.resolvedPath)) { + return; + } + if (!isChangedSignagure(state, affectedFile.resolvedPath)) + return; + // Since isolated modules dont change js files, files affected by change in signature is itself + // But we need to cleanup semantic diagnostics and queue dts emit for affected files + if (state.compilerOptions.isolatedModules) { + var seenFileNamesMap = ts.createMap(); + seenFileNamesMap.set(affectedFile.resolvedPath, true); + var queue = ts.BuilderState.getReferencedByPaths(state, affectedFile.resolvedPath); + while (queue.length > 0) { + var currentPath = queue.pop(); + if (!seenFileNamesMap.has(currentPath)) { + seenFileNamesMap.set(currentPath, true); + var result = fn(state, currentPath); + if (result && isChangedSignagure(state, currentPath)) { + var currentSourceFile = ts.Debug.checkDefined(state.program).getSourceFileByPath(currentPath); + queue.push.apply(queue, ts.BuilderState.getReferencedByPaths(state, currentSourceFile.resolvedPath)); + } + } + } + } + ts.Debug.assert(!!state.currentAffectedFilesExportedModulesMap); + var seenFileAndExportsOfFile = ts.createMap(); + // Go through exported modules from cache first + // If exported modules has path, all files referencing file exported from are affected + if (ts.forEachEntry(state.currentAffectedFilesExportedModulesMap, function (exportedModules, exportedFromPath) { + return exportedModules && + exportedModules.has(affectedFile.resolvedPath) && + forEachFilesReferencingPath(state, exportedFromPath, seenFileAndExportsOfFile, fn); + })) { + return; + } + // If exported from path is not from cache and exported modules has path, all files referencing file exported from are affected + ts.forEachEntry(state.exportedModulesMap, function (exportedModules, exportedFromPath) { + return !state.currentAffectedFilesExportedModulesMap.has(exportedFromPath) && // If we already iterated this through cache, ignore it + exportedModules.has(affectedFile.resolvedPath) && + forEachFilesReferencingPath(state, exportedFromPath, seenFileAndExportsOfFile, fn); + }); + } + /** + * Iterate on files referencing referencedPath + */ + function forEachFilesReferencingPath(state, referencedPath, seenFileAndExportsOfFile, fn) { + return ts.forEachEntry(state.referencedMap, function (referencesInFile, filePath) { + return referencesInFile.has(referencedPath) && forEachFileAndExportsOfFile(state, filePath, seenFileAndExportsOfFile, fn); + }); + } + /** + * fn on file and iterate on anything that exports this file + */ + function forEachFileAndExportsOfFile(state, filePath, seenFileAndExportsOfFile, fn) { + if (!ts.addToSeen(seenFileAndExportsOfFile, filePath)) { + return false; + } + if (fn(state, filePath)) { + // If there are no more diagnostics from old cache, done + return true; + } + ts.Debug.assert(!!state.currentAffectedFilesExportedModulesMap); + // Go through exported modules from cache first + // If exported modules has path, all files referencing file exported from are affected + if (ts.forEachEntry(state.currentAffectedFilesExportedModulesMap, function (exportedModules, exportedFromPath) { + return exportedModules && + exportedModules.has(filePath) && + forEachFileAndExportsOfFile(state, exportedFromPath, seenFileAndExportsOfFile, fn); + })) { + return true; + } + // If exported from path is not from cache and exported modules has path, all files referencing file exported from are affected + if (ts.forEachEntry(state.exportedModulesMap, function (exportedModules, exportedFromPath) { + return !state.currentAffectedFilesExportedModulesMap.has(exportedFromPath) && // If we already iterated this through cache, ignore it + exportedModules.has(filePath) && + forEachFileAndExportsOfFile(state, exportedFromPath, seenFileAndExportsOfFile, fn); + })) { + return true; + } + // Remove diagnostics of files that import this file (without going to exports of referencing files) + return !!ts.forEachEntry(state.referencedMap, function (referencesInFile, referencingFilePath) { + return referencesInFile.has(filePath) && + !seenFileAndExportsOfFile.has(referencingFilePath) && // Not already removed diagnostic file + fn(state, referencingFilePath); + } // Dont add to seen since this is not yet done with the export removal + ); + } + /** + * This is called after completing operation on the next affected file. + * The operations here are postponed to ensure that cancellation during the iteration is handled correctly + */ + function doneWithAffectedFile(state, affected, emitKind, isPendingEmit, isBuildInfoEmit) { + if (isBuildInfoEmit) { + state.emittedBuildInfo = true; + } + else if (affected === state.program) { + state.changedFilesSet.clear(); + state.programEmitComplete = true; + } + else { + state.seenAffectedFiles.set(affected.resolvedPath, true); + if (emitKind !== undefined) { + (state.seenEmittedFiles || (state.seenEmittedFiles = ts.createMap())).set(affected.resolvedPath, emitKind); + } + if (isPendingEmit) { + state.affectedFilesPendingEmitIndex++; + } + else { + state.affectedFilesIndex++; + } + } + } + /** + * Returns the result with affected file + */ + function toAffectedFileResult(state, result, affected) { + doneWithAffectedFile(state, affected); + return { result: result, affected: affected }; + } + /** + * Returns the result with affected file + */ + function toAffectedFileEmitResult(state, result, affected, emitKind, isPendingEmit, isBuildInfoEmit) { + doneWithAffectedFile(state, affected, emitKind, isPendingEmit, isBuildInfoEmit); + return { result: result, affected: affected }; + } + /** + * Gets semantic diagnostics for the file which are + * bindAndCheckDiagnostics (from cache) and program diagnostics + */ + function getSemanticDiagnosticsOfFile(state, sourceFile, cancellationToken) { + return ts.concatenate(getBinderAndCheckerDiagnosticsOfFile(state, sourceFile, cancellationToken), ts.Debug.checkDefined(state.program).getProgramDiagnostics(sourceFile)); + } + /** + * Gets the binder and checker diagnostics either from cache if present, or otherwise from program and caches it + * Note that it is assumed that when asked about binder and checker diagnostics, the file has been taken out of affected files/changed file set + */ + function getBinderAndCheckerDiagnosticsOfFile(state, sourceFile, cancellationToken) { + var path = sourceFile.resolvedPath; + if (state.semanticDiagnosticsPerFile) { + var cachedDiagnostics = state.semanticDiagnosticsPerFile.get(path); + // Report the bind and check diagnostics from the cache if we already have those diagnostics present + if (cachedDiagnostics) { + return cachedDiagnostics; + } + } + // Diagnostics werent cached, get them from program, and cache the result + var diagnostics = ts.Debug.checkDefined(state.program).getBindAndCheckDiagnostics(sourceFile, cancellationToken); + if (state.semanticDiagnosticsPerFile) { + state.semanticDiagnosticsPerFile.set(path, diagnostics); + } + return diagnostics; + } + /** + * Gets the program information to be emitted in buildInfo so that we can use it to create new program + */ + function getProgramBuildInfo(state, getCanonicalFileName) { + if (state.compilerOptions.outFile || state.compilerOptions.out) + return undefined; + var currentDirectory = ts.Debug.checkDefined(state.program).getCurrentDirectory(); + var buildInfoDirectory = ts.getDirectoryPath(ts.getNormalizedAbsolutePath(ts.getTsBuildInfoEmitOutputFilePath(state.compilerOptions), currentDirectory)); + var fileInfos = {}; + state.fileInfos.forEach(function (value, key) { + var signature = state.currentAffectedFilesSignatures && state.currentAffectedFilesSignatures.get(key); + fileInfos[relativeToBuildInfo(key)] = signature === undefined ? value : { version: value.version, signature: signature, affectsGlobalScope: value.affectsGlobalScope }; + }); + var result = { + fileInfos: fileInfos, + options: convertToReusableCompilerOptions(state.compilerOptions, relativeToBuildInfoEnsuringAbsolutePath) + }; + if (state.referencedMap) { + var referencedMap = {}; + for (var _i = 0, _a = ts.arrayFrom(state.referencedMap.keys()).sort(ts.compareStringsCaseSensitive); _i < _a.length; _i++) { + var key = _a[_i]; + referencedMap[relativeToBuildInfo(key)] = ts.arrayFrom(state.referencedMap.get(key).keys(), relativeToBuildInfo).sort(ts.compareStringsCaseSensitive); + } + result.referencedMap = referencedMap; + } + if (state.exportedModulesMap) { + var exportedModulesMap = {}; + for (var _b = 0, _c = ts.arrayFrom(state.exportedModulesMap.keys()).sort(ts.compareStringsCaseSensitive); _b < _c.length; _b++) { + var key = _c[_b]; + var newValue = state.currentAffectedFilesExportedModulesMap && state.currentAffectedFilesExportedModulesMap.get(key); + // Not in temporary cache, use existing value + if (newValue === undefined) + exportedModulesMap[relativeToBuildInfo(key)] = ts.arrayFrom(state.exportedModulesMap.get(key).keys(), relativeToBuildInfo).sort(ts.compareStringsCaseSensitive); + // Value in cache and has updated value map, use that + else if (newValue) + exportedModulesMap[relativeToBuildInfo(key)] = ts.arrayFrom(newValue.keys(), relativeToBuildInfo).sort(ts.compareStringsCaseSensitive); + } + result.exportedModulesMap = exportedModulesMap; + } + if (state.semanticDiagnosticsPerFile) { + var semanticDiagnosticsPerFile = []; + for (var _d = 0, _e = ts.arrayFrom(state.semanticDiagnosticsPerFile.keys()).sort(ts.compareStringsCaseSensitive); _d < _e.length; _d++) { + var key = _e[_d]; + var value = state.semanticDiagnosticsPerFile.get(key); + semanticDiagnosticsPerFile.push(value.length ? + [ + relativeToBuildInfo(key), + state.hasReusableDiagnostic ? + value : + convertToReusableDiagnostics(value, relativeToBuildInfo) + ] : + relativeToBuildInfo(key)); + } + result.semanticDiagnosticsPerFile = semanticDiagnosticsPerFile; + } + return result; + function relativeToBuildInfoEnsuringAbsolutePath(path) { + return relativeToBuildInfo(ts.getNormalizedAbsolutePath(path, currentDirectory)); + } + function relativeToBuildInfo(path) { + return ts.ensurePathIsNonModuleName(ts.getRelativePathFromDirectory(buildInfoDirectory, path, getCanonicalFileName)); + } + } + function convertToReusableCompilerOptions(options, relativeToBuildInfo) { + var result = {}; + var optionsNameMap = ts.getOptionsNameMap().optionsNameMap; + for (var name in options) { + if (ts.hasProperty(options, name)) { + result[name] = convertToReusableCompilerOptionValue(optionsNameMap.get(name.toLowerCase()), options[name], relativeToBuildInfo); + } + } + if (result.configFilePath) { + result.configFilePath = relativeToBuildInfo(result.configFilePath); + } + return result; + } + function convertToReusableCompilerOptionValue(option, value, relativeToBuildInfo) { + if (option) { + if (option.type === "list") { + var values = value; + if (option.element.isFilePath && values.length) { + return values.map(relativeToBuildInfo); + } + } + else if (option.isFilePath) { + return relativeToBuildInfo(value); + } + } + return value; + } + function convertToReusableDiagnostics(diagnostics, relativeToBuildInfo) { + ts.Debug.assert(!!diagnostics.length); + return diagnostics.map(function (diagnostic) { + var result = convertToReusableDiagnosticRelatedInformation(diagnostic, relativeToBuildInfo); + result.reportsUnnecessary = diagnostic.reportsUnnecessary; + result.source = diagnostic.source; + var relatedInformation = diagnostic.relatedInformation; + result.relatedInformation = relatedInformation ? + relatedInformation.length ? + relatedInformation.map(function (r) { return convertToReusableDiagnosticRelatedInformation(r, relativeToBuildInfo); }) : + ts.emptyArray : + undefined; + return result; + }); + } + function convertToReusableDiagnosticRelatedInformation(diagnostic, relativeToBuildInfo) { + var file = diagnostic.file; + return __assign(__assign({}, diagnostic), { file: file ? relativeToBuildInfo(file.resolvedPath) : undefined }); + } + var BuilderProgramKind; + (function (BuilderProgramKind) { + BuilderProgramKind[BuilderProgramKind["SemanticDiagnosticsBuilderProgram"] = 0] = "SemanticDiagnosticsBuilderProgram"; + BuilderProgramKind[BuilderProgramKind["EmitAndSemanticDiagnosticsBuilderProgram"] = 1] = "EmitAndSemanticDiagnosticsBuilderProgram"; + })(BuilderProgramKind = ts.BuilderProgramKind || (ts.BuilderProgramKind = {})); + function getBuilderCreationParameters(newProgramOrRootNames, hostOrOptions, oldProgramOrHost, configFileParsingDiagnosticsOrOldProgram, configFileParsingDiagnostics, projectReferences) { + var host; + var newProgram; + var oldProgram; + if (newProgramOrRootNames === undefined) { + ts.Debug.assert(hostOrOptions === undefined); + host = oldProgramOrHost; + oldProgram = configFileParsingDiagnosticsOrOldProgram; + ts.Debug.assert(!!oldProgram); + newProgram = oldProgram.getProgram(); + } + else if (ts.isArray(newProgramOrRootNames)) { + oldProgram = configFileParsingDiagnosticsOrOldProgram; + newProgram = ts.createProgram({ + rootNames: newProgramOrRootNames, + options: hostOrOptions, + host: oldProgramOrHost, + oldProgram: oldProgram && oldProgram.getProgramOrUndefined(), + configFileParsingDiagnostics: configFileParsingDiagnostics, + projectReferences: projectReferences + }); + host = oldProgramOrHost; + } + else { + newProgram = newProgramOrRootNames; + host = hostOrOptions; + oldProgram = oldProgramOrHost; + configFileParsingDiagnostics = configFileParsingDiagnosticsOrOldProgram; + } + return { host: host, newProgram: newProgram, oldProgram: oldProgram, configFileParsingDiagnostics: configFileParsingDiagnostics || ts.emptyArray }; + } + ts.getBuilderCreationParameters = getBuilderCreationParameters; + function createBuilderProgram(kind, _a) { + var newProgram = _a.newProgram, host = _a.host, oldProgram = _a.oldProgram, configFileParsingDiagnostics = _a.configFileParsingDiagnostics; + // Return same program if underlying program doesnt change + var oldState = oldProgram && oldProgram.getState(); + if (oldState && newProgram === oldState.program && configFileParsingDiagnostics === newProgram.getConfigFileParsingDiagnostics()) { + newProgram = undefined; // TODO: GH#18217 + oldState = undefined; + return oldProgram; + } + /** + * Create the canonical file name for identity + */ + var getCanonicalFileName = ts.createGetCanonicalFileName(host.useCaseSensitiveFileNames()); + /** + * Computing hash to for signature verification + */ + var computeHash = host.createHash || ts.generateDjb2Hash; + var state = createBuilderProgramState(newProgram, getCanonicalFileName, oldState); + var backupState; + newProgram.getProgramBuildInfo = function () { return getProgramBuildInfo(state, getCanonicalFileName); }; + // To ensure that we arent storing any references to old program or new program without state + newProgram = undefined; // TODO: GH#18217 + oldProgram = undefined; + oldState = undefined; + var builderProgram = createRedirectedBuilderProgram(state, configFileParsingDiagnostics); + builderProgram.getState = function () { return state; }; + builderProgram.backupState = function () { + ts.Debug.assert(backupState === undefined); + backupState = cloneBuilderProgramState(state); + }; + builderProgram.restoreState = function () { + state = ts.Debug.checkDefined(backupState); + backupState = undefined; + }; + builderProgram.getAllDependencies = function (sourceFile) { return ts.BuilderState.getAllDependencies(state, ts.Debug.checkDefined(state.program), sourceFile); }; + builderProgram.getSemanticDiagnostics = getSemanticDiagnostics; + builderProgram.emit = emit; + builderProgram.releaseProgram = function () { + releaseCache(state); + backupState = undefined; + }; + if (kind === BuilderProgramKind.SemanticDiagnosticsBuilderProgram) { + builderProgram.getSemanticDiagnosticsOfNextAffectedFile = getSemanticDiagnosticsOfNextAffectedFile; + } + else if (kind === BuilderProgramKind.EmitAndSemanticDiagnosticsBuilderProgram) { + builderProgram.getSemanticDiagnosticsOfNextAffectedFile = getSemanticDiagnosticsOfNextAffectedFile; + builderProgram.emitNextAffectedFile = emitNextAffectedFile; + } + else { + ts.notImplemented(); + } + return builderProgram; + /** + * Emits the next affected file's emit result (EmitResult and sourceFiles emitted) or returns undefined if iteration is complete + * The first of writeFile if provided, writeFile of BuilderProgramHost if provided, writeFile of compiler host + * in that order would be used to write the files + */ + function emitNextAffectedFile(writeFile, cancellationToken, emitOnlyDtsFiles, customTransformers) { + var affected = getNextAffectedFile(state, cancellationToken, computeHash); + var emitKind = 1 /* Full */; + var isPendingEmitFile = false; + if (!affected) { + if (!state.compilerOptions.out && !state.compilerOptions.outFile) { + var pendingAffectedFile = getNextAffectedFilePendingEmit(state); + if (!pendingAffectedFile) { + if (state.emittedBuildInfo) { + return undefined; + } + var affected_1 = ts.Debug.checkDefined(state.program); + return toAffectedFileEmitResult(state, + // When whole program is affected, do emit only once (eg when --out or --outFile is specified) + // Otherwise just affected file + affected_1.emitBuildInfo(writeFile || ts.maybeBind(host, host.writeFile), cancellationToken), affected_1, 1 /* Full */, + /*isPendingEmitFile*/ false, + /*isBuildInfoEmit*/ true); + } + (affected = pendingAffectedFile.affectedFile, emitKind = pendingAffectedFile.emitKind); + isPendingEmitFile = true; + } + else { + var program = ts.Debug.checkDefined(state.program); + if (state.programEmitComplete) + return undefined; + affected = program; + } + } + return toAffectedFileEmitResult(state, + // When whole program is affected, do emit only once (eg when --out or --outFile is specified) + // Otherwise just affected file + ts.Debug.checkDefined(state.program).emit(affected === state.program ? undefined : affected, writeFile || ts.maybeBind(host, host.writeFile), cancellationToken, emitOnlyDtsFiles || emitKind === 0 /* DtsOnly */, customTransformers), affected, emitKind, isPendingEmitFile); + } + /** + * Emits the JavaScript and declaration files. + * When targetSource file is specified, emits the files corresponding to that source file, + * otherwise for the whole program. + * In case of EmitAndSemanticDiagnosticsBuilderProgram, when targetSourceFile is specified, + * it is assumed that that file is handled from affected file list. If targetSourceFile is not specified, + * it will only emit all the affected files instead of whole program + * + * The first of writeFile if provided, writeFile of BuilderProgramHost if provided, writeFile of compiler host + * in that order would be used to write the files + */ + function emit(targetSourceFile, writeFile, cancellationToken, emitOnlyDtsFiles, customTransformers) { + if (kind === BuilderProgramKind.EmitAndSemanticDiagnosticsBuilderProgram) { + assertSourceFileOkWithoutNextAffectedCall(state, targetSourceFile); + var result = ts.handleNoEmitOptions(builderProgram, targetSourceFile, cancellationToken); + if (result) + return result; + if (!targetSourceFile) { + // Emit and report any errors we ran into. + var sourceMaps = []; + var emitSkipped = false; + var diagnostics = void 0; + var emittedFiles = []; + var affectedEmitResult = void 0; + while (affectedEmitResult = emitNextAffectedFile(writeFile, cancellationToken, emitOnlyDtsFiles, customTransformers)) { + emitSkipped = emitSkipped || affectedEmitResult.result.emitSkipped; + diagnostics = ts.addRange(diagnostics, affectedEmitResult.result.diagnostics); + emittedFiles = ts.addRange(emittedFiles, affectedEmitResult.result.emittedFiles); + sourceMaps = ts.addRange(sourceMaps, affectedEmitResult.result.sourceMaps); + } + return { + emitSkipped: emitSkipped, + diagnostics: diagnostics || ts.emptyArray, + emittedFiles: emittedFiles, + sourceMaps: sourceMaps + }; + } + } + return ts.Debug.checkDefined(state.program).emit(targetSourceFile, writeFile || ts.maybeBind(host, host.writeFile), cancellationToken, emitOnlyDtsFiles, customTransformers); + } + /** + * Return the semantic diagnostics for the next affected file or undefined if iteration is complete + * If provided ignoreSourceFile would be called before getting the diagnostics and would ignore the sourceFile if the returned value was true + */ + function getSemanticDiagnosticsOfNextAffectedFile(cancellationToken, ignoreSourceFile) { + while (true) { + var affected = getNextAffectedFile(state, cancellationToken, computeHash); + if (!affected) { + // Done + return undefined; + } + else if (affected === state.program) { + // When whole program is affected, get all semantic diagnostics (eg when --out or --outFile is specified) + return toAffectedFileResult(state, state.program.getSemanticDiagnostics(/*targetSourceFile*/ undefined, cancellationToken), affected); + } + // Add file to affected file pending emit to handle for later emit time + if (kind === BuilderProgramKind.EmitAndSemanticDiagnosticsBuilderProgram) { + addToAffectedFilesPendingEmit(state, affected.resolvedPath, 1 /* Full */); + } + // Get diagnostics for the affected file if its not ignored + if (ignoreSourceFile && ignoreSourceFile(affected)) { + // Get next affected file + doneWithAffectedFile(state, affected); + continue; + } + return toAffectedFileResult(state, getSemanticDiagnosticsOfFile(state, affected, cancellationToken), affected); + } + } + /** + * Gets the semantic diagnostics from the program corresponding to this state of file (if provided) or whole program + * The semantic diagnostics are cached and managed here + * Note that it is assumed that when asked about semantic diagnostics through this API, + * the file has been taken out of affected files so it is safe to use cache or get from program and cache the diagnostics + * In case of SemanticDiagnosticsBuilderProgram if the source file is not provided, + * it will iterate through all the affected files, to ensure that cache stays valid and yet provide a way to get all semantic diagnostics + */ + function getSemanticDiagnostics(sourceFile, cancellationToken) { + assertSourceFileOkWithoutNextAffectedCall(state, sourceFile); + var compilerOptions = ts.Debug.checkDefined(state.program).getCompilerOptions(); + if (compilerOptions.outFile || compilerOptions.out) { + ts.Debug.assert(!state.semanticDiagnosticsPerFile); + // We dont need to cache the diagnostics just return them from program + return ts.Debug.checkDefined(state.program).getSemanticDiagnostics(sourceFile, cancellationToken); + } + if (sourceFile) { + return getSemanticDiagnosticsOfFile(state, sourceFile, cancellationToken); + } + // When semantic builder asks for diagnostics of the whole program, + // ensure that all the affected files are handled + // eslint-disable-next-line no-empty + while (getSemanticDiagnosticsOfNextAffectedFile(cancellationToken)) { + } + var diagnostics; + for (var _i = 0, _a = ts.Debug.checkDefined(state.program).getSourceFiles(); _i < _a.length; _i++) { + var sourceFile_1 = _a[_i]; + diagnostics = ts.addRange(diagnostics, getSemanticDiagnosticsOfFile(state, sourceFile_1, cancellationToken)); + } + return diagnostics || ts.emptyArray; + } + } + ts.createBuilderProgram = createBuilderProgram; + function addToAffectedFilesPendingEmit(state, affectedFilePendingEmit, kind) { + if (!state.affectedFilesPendingEmit) + state.affectedFilesPendingEmit = []; + if (!state.affectedFilesPendingEmitKind) + state.affectedFilesPendingEmitKind = ts.createMap(); + var existingKind = state.affectedFilesPendingEmitKind.get(affectedFilePendingEmit); + state.affectedFilesPendingEmit.push(affectedFilePendingEmit); + state.affectedFilesPendingEmitKind.set(affectedFilePendingEmit, existingKind || kind); + // affectedFilesPendingEmitIndex === undefined + // - means the emit state.affectedFilesPendingEmit was undefined before adding current affected files + // so start from 0 as array would be affectedFilesPendingEmit + // else, continue to iterate from existing index, the current set is appended to existing files + if (state.affectedFilesPendingEmitIndex === undefined) { + state.affectedFilesPendingEmitIndex = 0; + } + } + function getMapOfReferencedSet(mapLike, toPath) { + if (!mapLike) + return undefined; + var map = ts.createMap(); + // Copies keys/values from template. Note that for..in will not throw if + // template is undefined, and instead will just exit the loop. + for (var key in mapLike) { + if (ts.hasProperty(mapLike, key)) { + map.set(toPath(key), ts.arrayToSet(mapLike[key], toPath)); + } + } + return map; + } + function createBuildProgramUsingProgramBuildInfo(program, buildInfoPath, host) { + var buildInfoDirectory = ts.getDirectoryPath(ts.getNormalizedAbsolutePath(buildInfoPath, host.getCurrentDirectory())); + var getCanonicalFileName = ts.createGetCanonicalFileName(host.useCaseSensitiveFileNames()); + var fileInfos = ts.createMap(); + for (var key in program.fileInfos) { + if (ts.hasProperty(program.fileInfos, key)) { + fileInfos.set(toPath(key), program.fileInfos[key]); + } + } + var state = { + fileInfos: fileInfos, + compilerOptions: ts.convertToOptionsWithAbsolutePaths(program.options, toAbsolutePath), + referencedMap: getMapOfReferencedSet(program.referencedMap, toPath), + exportedModulesMap: getMapOfReferencedSet(program.exportedModulesMap, toPath), + semanticDiagnosticsPerFile: program.semanticDiagnosticsPerFile && ts.arrayToMap(program.semanticDiagnosticsPerFile, function (value) { return toPath(ts.isString(value) ? value : value[0]); }, function (value) { return ts.isString(value) ? ts.emptyArray : value[1]; }), + hasReusableDiagnostic: true + }; + return { + getState: function () { return state; }, + backupState: ts.noop, + restoreState: ts.noop, + getProgram: ts.notImplemented, + getProgramOrUndefined: ts.returnUndefined, + releaseProgram: ts.noop, + getCompilerOptions: function () { return state.compilerOptions; }, + getSourceFile: ts.notImplemented, + getSourceFiles: ts.notImplemented, + getOptionsDiagnostics: ts.notImplemented, + getGlobalDiagnostics: ts.notImplemented, + getConfigFileParsingDiagnostics: ts.notImplemented, + getSyntacticDiagnostics: ts.notImplemented, + getDeclarationDiagnostics: ts.notImplemented, + getSemanticDiagnostics: ts.notImplemented, + emit: ts.notImplemented, + getAllDependencies: ts.notImplemented, + getCurrentDirectory: ts.notImplemented, + emitNextAffectedFile: ts.notImplemented, + getSemanticDiagnosticsOfNextAffectedFile: ts.notImplemented, + close: ts.noop, + }; + function toPath(path) { + return ts.toPath(path, buildInfoDirectory, getCanonicalFileName); + } + function toAbsolutePath(path) { + return ts.getNormalizedAbsolutePath(path, buildInfoDirectory); + } + } + ts.createBuildProgramUsingProgramBuildInfo = createBuildProgramUsingProgramBuildInfo; + function createRedirectedBuilderProgram(state, configFileParsingDiagnostics) { + return { + getState: ts.notImplemented, + backupState: ts.noop, + restoreState: ts.noop, + getProgram: getProgram, + getProgramOrUndefined: function () { return state.program; }, + releaseProgram: function () { return state.program = undefined; }, + getCompilerOptions: function () { return state.compilerOptions; }, + getSourceFile: function (fileName) { return getProgram().getSourceFile(fileName); }, + getSourceFiles: function () { return getProgram().getSourceFiles(); }, + getOptionsDiagnostics: function (cancellationToken) { return getProgram().getOptionsDiagnostics(cancellationToken); }, + getGlobalDiagnostics: function (cancellationToken) { return getProgram().getGlobalDiagnostics(cancellationToken); }, + getConfigFileParsingDiagnostics: function () { return configFileParsingDiagnostics; }, + getSyntacticDiagnostics: function (sourceFile, cancellationToken) { return getProgram().getSyntacticDiagnostics(sourceFile, cancellationToken); }, + getDeclarationDiagnostics: function (sourceFile, cancellationToken) { return getProgram().getDeclarationDiagnostics(sourceFile, cancellationToken); }, + getSemanticDiagnostics: function (sourceFile, cancellationToken) { return getProgram().getSemanticDiagnostics(sourceFile, cancellationToken); }, + emit: function (sourceFile, writeFile, cancellationToken, emitOnlyDts, customTransformers) { return getProgram().emit(sourceFile, writeFile, cancellationToken, emitOnlyDts, customTransformers); }, + getAllDependencies: ts.notImplemented, + getCurrentDirectory: function () { return getProgram().getCurrentDirectory(); }, + close: ts.noop, + }; + function getProgram() { + return ts.Debug.checkDefined(state.program); + } + } + ts.createRedirectedBuilderProgram = createRedirectedBuilderProgram; +})(ts || (ts = {})); +var ts; +(function (ts) { + function createSemanticDiagnosticsBuilderProgram(newProgramOrRootNames, hostOrOptions, oldProgramOrHost, configFileParsingDiagnosticsOrOldProgram, configFileParsingDiagnostics, projectReferences) { + return ts.createBuilderProgram(ts.BuilderProgramKind.SemanticDiagnosticsBuilderProgram, ts.getBuilderCreationParameters(newProgramOrRootNames, hostOrOptions, oldProgramOrHost, configFileParsingDiagnosticsOrOldProgram, configFileParsingDiagnostics, projectReferences)); + } + ts.createSemanticDiagnosticsBuilderProgram = createSemanticDiagnosticsBuilderProgram; + function createEmitAndSemanticDiagnosticsBuilderProgram(newProgramOrRootNames, hostOrOptions, oldProgramOrHost, configFileParsingDiagnosticsOrOldProgram, configFileParsingDiagnostics, projectReferences) { + return ts.createBuilderProgram(ts.BuilderProgramKind.EmitAndSemanticDiagnosticsBuilderProgram, ts.getBuilderCreationParameters(newProgramOrRootNames, hostOrOptions, oldProgramOrHost, configFileParsingDiagnosticsOrOldProgram, configFileParsingDiagnostics, projectReferences)); + } + ts.createEmitAndSemanticDiagnosticsBuilderProgram = createEmitAndSemanticDiagnosticsBuilderProgram; + function createAbstractBuilder(newProgramOrRootNames, hostOrOptions, oldProgramOrHost, configFileParsingDiagnosticsOrOldProgram, configFileParsingDiagnostics, projectReferences) { + var _a = ts.getBuilderCreationParameters(newProgramOrRootNames, hostOrOptions, oldProgramOrHost, configFileParsingDiagnosticsOrOldProgram, configFileParsingDiagnostics, projectReferences), newProgram = _a.newProgram, newConfigFileParsingDiagnostics = _a.configFileParsingDiagnostics; + return ts.createRedirectedBuilderProgram({ program: newProgram, compilerOptions: newProgram.getCompilerOptions() }, newConfigFileParsingDiagnostics); + } + ts.createAbstractBuilder = createAbstractBuilder; +})(ts || (ts = {})); +/*@internal*/ +var ts; +(function (ts) { + function removeIgnoredPath(path) { + // Consider whole staging folder as if node_modules changed. + if (ts.endsWith(path, "/node_modules/.staging")) { + return ts.removeSuffix(path, "/.staging"); + } + return ts.some(ts.ignoredPaths, function (searchPath) { return ts.stringContains(path, searchPath); }) ? + undefined : + path; + } + ts.removeIgnoredPath = removeIgnoredPath; + /** + * Filter out paths like + * "/", "/user", "/user/username", "/user/username/folderAtRoot", + * "c:/", "c:/users", "c:/users/username", "c:/users/username/folderAtRoot", "c:/folderAtRoot" + * @param dirPath + */ + function canWatchDirectory(dirPath) { + var rootLength = ts.getRootLength(dirPath); + if (dirPath.length === rootLength) { + // Ignore "/", "c:/" + return false; + } + var nextDirectorySeparator = dirPath.indexOf(ts.directorySeparator, rootLength); + if (nextDirectorySeparator === -1) { + // ignore "/user", "c:/users" or "c:/folderAtRoot" + return false; + } + var pathPartForUserCheck = dirPath.substring(rootLength, nextDirectorySeparator + 1); + var isNonDirectorySeparatorRoot = rootLength > 1 || dirPath.charCodeAt(0) !== 47 /* slash */; + if (isNonDirectorySeparatorRoot && + dirPath.search(/[a-zA-Z]:/) !== 0 && // Non dos style paths + pathPartForUserCheck.search(/[a-zA-z]\$\//) === 0) { // Dos style nextPart + nextDirectorySeparator = dirPath.indexOf(ts.directorySeparator, nextDirectorySeparator + 1); + if (nextDirectorySeparator === -1) { + // ignore "//vda1cs4850/c$/folderAtRoot" + return false; + } + pathPartForUserCheck = dirPath.substring(rootLength + pathPartForUserCheck.length, nextDirectorySeparator + 1); + } + if (isNonDirectorySeparatorRoot && + pathPartForUserCheck.search(/users\//i) !== 0) { + // Paths like c:/folderAtRoot/subFolder are allowed + return true; + } + for (var searchIndex = nextDirectorySeparator + 1, searchLevels = 2; searchLevels > 0; searchLevels--) { + searchIndex = dirPath.indexOf(ts.directorySeparator, searchIndex) + 1; + if (searchIndex === 0) { + // Folder isnt at expected minimum levels + return false; + } + } + return true; + } + ts.canWatchDirectory = canWatchDirectory; + function createResolutionCache(resolutionHost, rootDirForResolution, logChangesWhenResolvingModule) { + var filesWithChangedSetOfUnresolvedImports; + var filesWithInvalidatedResolutions; + var filesWithInvalidatedNonRelativeUnresolvedImports; + var nonRelativeExternalModuleResolutions = ts.createMultiMap(); + var resolutionsWithFailedLookups = []; + var resolvedFileToResolution = ts.createMultiMap(); + var getCurrentDirectory = ts.memoize(function () { return resolutionHost.getCurrentDirectory(); }); // TODO: GH#18217 + var cachedDirectoryStructureHost = resolutionHost.getCachedDirectoryStructureHost(); + // The resolvedModuleNames and resolvedTypeReferenceDirectives are the cache of resolutions per file. + // The key in the map is source file's path. + // The values are Map of resolutions with key being name lookedup. + var resolvedModuleNames = ts.createMap(); + var perDirectoryResolvedModuleNames = ts.createCacheWithRedirects(); + var nonRelativeModuleNameCache = ts.createCacheWithRedirects(); + var moduleResolutionCache = ts.createModuleResolutionCacheWithMaps(perDirectoryResolvedModuleNames, nonRelativeModuleNameCache, getCurrentDirectory(), resolutionHost.getCanonicalFileName); + var resolvedTypeReferenceDirectives = ts.createMap(); + var perDirectoryResolvedTypeReferenceDirectives = ts.createCacheWithRedirects(); + /** + * These are the extensions that failed lookup files will have by default, + * any other extension of failed lookup will be store that path in custom failed lookup path + * This helps in not having to comb through all resolutions when files are added/removed + * Note that .d.ts file also has .d.ts extension hence will be part of default extensions + */ + var failedLookupDefaultExtensions = [".ts" /* Ts */, ".tsx" /* Tsx */, ".js" /* Js */, ".jsx" /* Jsx */, ".json" /* Json */]; + var customFailedLookupPaths = ts.createMap(); + var directoryWatchesOfFailedLookups = ts.createMap(); + var rootDir = rootDirForResolution && ts.removeTrailingDirectorySeparator(ts.getNormalizedAbsolutePath(rootDirForResolution, getCurrentDirectory())); + var rootPath = (rootDir && resolutionHost.toPath(rootDir)); // TODO: GH#18217 + var rootSplitLength = rootPath !== undefined ? rootPath.split(ts.directorySeparator).length : 0; + // TypeRoot watches for the types that get added as part of getAutomaticTypeDirectiveNames + var typeRootsWatches = ts.createMap(); + return { + startRecordingFilesWithChangedResolutions: startRecordingFilesWithChangedResolutions, + finishRecordingFilesWithChangedResolutions: finishRecordingFilesWithChangedResolutions, + // perDirectoryResolvedModuleNames and perDirectoryResolvedTypeReferenceDirectives could be non empty if there was exception during program update + // (between startCachingPerDirectoryResolution and finishCachingPerDirectoryResolution) + startCachingPerDirectoryResolution: clearPerDirectoryResolutions, + finishCachingPerDirectoryResolution: finishCachingPerDirectoryResolution, + resolveModuleNames: resolveModuleNames, + getResolvedModuleWithFailedLookupLocationsFromCache: getResolvedModuleWithFailedLookupLocationsFromCache, + resolveTypeReferenceDirectives: resolveTypeReferenceDirectives, + removeResolutionsFromProjectReferenceRedirects: removeResolutionsFromProjectReferenceRedirects, + removeResolutionsOfFile: removeResolutionsOfFile, + invalidateResolutionOfFile: invalidateResolutionOfFile, + setFilesWithInvalidatedNonRelativeUnresolvedImports: setFilesWithInvalidatedNonRelativeUnresolvedImports, + createHasInvalidatedResolution: createHasInvalidatedResolution, + updateTypeRootsWatch: updateTypeRootsWatch, + closeTypeRootsWatch: closeTypeRootsWatch, + clear: clear + }; + function getResolvedModule(resolution) { + return resolution.resolvedModule; + } + function getResolvedTypeReferenceDirective(resolution) { + return resolution.resolvedTypeReferenceDirective; + } + function isInDirectoryPath(dir, file) { + if (dir === undefined || file.length <= dir.length) { + return false; + } + return ts.startsWith(file, dir) && file[dir.length] === ts.directorySeparator; + } + function clear() { + ts.clearMap(directoryWatchesOfFailedLookups, ts.closeFileWatcherOf); + customFailedLookupPaths.clear(); + nonRelativeExternalModuleResolutions.clear(); + closeTypeRootsWatch(); + resolvedModuleNames.clear(); + resolvedTypeReferenceDirectives.clear(); + resolvedFileToResolution.clear(); + resolutionsWithFailedLookups.length = 0; + // perDirectoryResolvedModuleNames and perDirectoryResolvedTypeReferenceDirectives could be non empty if there was exception during program update + // (between startCachingPerDirectoryResolution and finishCachingPerDirectoryResolution) + clearPerDirectoryResolutions(); + } + function startRecordingFilesWithChangedResolutions() { + filesWithChangedSetOfUnresolvedImports = []; + } + function finishRecordingFilesWithChangedResolutions() { + var collected = filesWithChangedSetOfUnresolvedImports; + filesWithChangedSetOfUnresolvedImports = undefined; + return collected; + } + function isFileWithInvalidatedNonRelativeUnresolvedImports(path) { + if (!filesWithInvalidatedNonRelativeUnresolvedImports) { + return false; + } + // Invalidated if file has unresolved imports + var value = filesWithInvalidatedNonRelativeUnresolvedImports.get(path); + return !!value && !!value.length; + } + function createHasInvalidatedResolution(forceAllFilesAsInvalidated) { + if (forceAllFilesAsInvalidated) { + // Any file asked would have invalidated resolution + filesWithInvalidatedResolutions = undefined; + return ts.returnTrue; + } + var collected = filesWithInvalidatedResolutions; + filesWithInvalidatedResolutions = undefined; + return function (path) { return (!!collected && collected.has(path)) || + isFileWithInvalidatedNonRelativeUnresolvedImports(path); }; + } + function clearPerDirectoryResolutions() { + perDirectoryResolvedModuleNames.clear(); + nonRelativeModuleNameCache.clear(); + perDirectoryResolvedTypeReferenceDirectives.clear(); + nonRelativeExternalModuleResolutions.forEach(watchFailedLookupLocationOfNonRelativeModuleResolutions); + nonRelativeExternalModuleResolutions.clear(); + } + function finishCachingPerDirectoryResolution() { + filesWithInvalidatedNonRelativeUnresolvedImports = undefined; + clearPerDirectoryResolutions(); + directoryWatchesOfFailedLookups.forEach(function (watcher, path) { + if (watcher.refCount === 0) { + directoryWatchesOfFailedLookups.delete(path); + watcher.watcher.close(); + } + }); + } + function resolveModuleName(moduleName, containingFile, compilerOptions, host, redirectedReference) { + var _a; + var primaryResult = ts.resolveModuleName(moduleName, containingFile, compilerOptions, host, moduleResolutionCache, redirectedReference); + // return result immediately only if global cache support is not enabled or if it is .ts, .tsx or .d.ts + if (!resolutionHost.getGlobalCache) { + return primaryResult; + } + // otherwise try to load typings from @types + var globalCache = resolutionHost.getGlobalCache(); + if (globalCache !== undefined && !ts.isExternalModuleNameRelative(moduleName) && !(primaryResult.resolvedModule && ts.extensionIsTS(primaryResult.resolvedModule.extension))) { + // create different collection of failed lookup locations for second pass + // if it will fail and we've already found something during the first pass - we don't want to pollute its results + var _b = ts.loadModuleFromGlobalCache(ts.Debug.checkDefined(resolutionHost.globalCacheResolutionModuleName)(moduleName), resolutionHost.projectName, compilerOptions, host, globalCache), resolvedModule = _b.resolvedModule, failedLookupLocations = _b.failedLookupLocations; + if (resolvedModule) { + // Modify existing resolution so its saved in the directory cache as well + primaryResult.resolvedModule = resolvedModule; + (_a = primaryResult.failedLookupLocations).push.apply(_a, failedLookupLocations); + return primaryResult; + } + } + // Default return the result from the first pass + return primaryResult; + } + function resolveNamesWithLocalCache(_a) { + var _b; + var names = _a.names, containingFile = _a.containingFile, redirectedReference = _a.redirectedReference, cache = _a.cache, perDirectoryCacheWithRedirects = _a.perDirectoryCacheWithRedirects, loader = _a.loader, getResolutionWithResolvedFileName = _a.getResolutionWithResolvedFileName, shouldRetryResolution = _a.shouldRetryResolution, reusedNames = _a.reusedNames, logChanges = _a.logChanges; + var path = resolutionHost.toPath(containingFile); + var resolutionsInFile = cache.get(path) || cache.set(path, ts.createMap()).get(path); + var dirPath = ts.getDirectoryPath(path); + var perDirectoryCache = perDirectoryCacheWithRedirects.getOrCreateMapOfCacheRedirects(redirectedReference); + var perDirectoryResolution = perDirectoryCache.get(dirPath); + if (!perDirectoryResolution) { + perDirectoryResolution = ts.createMap(); + perDirectoryCache.set(dirPath, perDirectoryResolution); + } + var resolvedModules = []; + var compilerOptions = resolutionHost.getCompilationSettings(); + var hasInvalidatedNonRelativeUnresolvedImport = logChanges && isFileWithInvalidatedNonRelativeUnresolvedImports(path); + // All the resolutions in this file are invalidated if this file wasnt resolved using same redirect + var program = resolutionHost.getCurrentProgram(); + var oldRedirect = program && program.getResolvedProjectReferenceToRedirect(containingFile); + var unmatchedRedirects = oldRedirect ? + !redirectedReference || redirectedReference.sourceFile.path !== oldRedirect.sourceFile.path : + !!redirectedReference; + var seenNamesInFile = ts.createMap(); + for (var _i = 0, names_3 = names; _i < names_3.length; _i++) { + var name = names_3[_i]; + var resolution = resolutionsInFile.get(name); + // Resolution is valid if it is present and not invalidated + if (!seenNamesInFile.has(name) && + unmatchedRedirects || !resolution || resolution.isInvalidated || + // If the name is unresolved import that was invalidated, recalculate + (hasInvalidatedNonRelativeUnresolvedImport && !ts.isExternalModuleNameRelative(name) && shouldRetryResolution(resolution))) { + var existingResolution = resolution; + var resolutionInDirectory = perDirectoryResolution.get(name); + if (resolutionInDirectory) { + resolution = resolutionInDirectory; + } + else { + resolution = loader(name, containingFile, compilerOptions, ((_b = resolutionHost.getCompilerHost) === null || _b === void 0 ? void 0 : _b.call(resolutionHost)) || resolutionHost, redirectedReference); + perDirectoryResolution.set(name, resolution); + } + resolutionsInFile.set(name, resolution); + watchFailedLookupLocationsOfExternalModuleResolutions(name, resolution, path, getResolutionWithResolvedFileName); + if (existingResolution) { + stopWatchFailedLookupLocationOfResolution(existingResolution, path, getResolutionWithResolvedFileName); + } + if (logChanges && filesWithChangedSetOfUnresolvedImports && !resolutionIsEqualTo(existingResolution, resolution)) { + filesWithChangedSetOfUnresolvedImports.push(path); + // reset log changes to avoid recording the same file multiple times + logChanges = false; + } + } + ts.Debug.assert(resolution !== undefined && !resolution.isInvalidated); + seenNamesInFile.set(name, true); + resolvedModules.push(getResolutionWithResolvedFileName(resolution)); + } + // Stop watching and remove the unused name + resolutionsInFile.forEach(function (resolution, name) { + if (!seenNamesInFile.has(name) && !ts.contains(reusedNames, name)) { + stopWatchFailedLookupLocationOfResolution(resolution, path, getResolutionWithResolvedFileName); + resolutionsInFile.delete(name); + } + }); + return resolvedModules; + function resolutionIsEqualTo(oldResolution, newResolution) { + if (oldResolution === newResolution) { + return true; + } + if (!oldResolution || !newResolution) { + return false; + } + var oldResult = getResolutionWithResolvedFileName(oldResolution); + var newResult = getResolutionWithResolvedFileName(newResolution); + if (oldResult === newResult) { + return true; + } + if (!oldResult || !newResult) { + return false; + } + return oldResult.resolvedFileName === newResult.resolvedFileName; + } + } + function resolveTypeReferenceDirectives(typeDirectiveNames, containingFile, redirectedReference) { + return resolveNamesWithLocalCache({ + names: typeDirectiveNames, + containingFile: containingFile, + redirectedReference: redirectedReference, + cache: resolvedTypeReferenceDirectives, + perDirectoryCacheWithRedirects: perDirectoryResolvedTypeReferenceDirectives, + loader: ts.resolveTypeReferenceDirective, + getResolutionWithResolvedFileName: getResolvedTypeReferenceDirective, + shouldRetryResolution: function (resolution) { return resolution.resolvedTypeReferenceDirective === undefined; }, + }); + } + function resolveModuleNames(moduleNames, containingFile, reusedNames, redirectedReference) { + return resolveNamesWithLocalCache({ + names: moduleNames, + containingFile: containingFile, + redirectedReference: redirectedReference, + cache: resolvedModuleNames, + perDirectoryCacheWithRedirects: perDirectoryResolvedModuleNames, + loader: resolveModuleName, + getResolutionWithResolvedFileName: getResolvedModule, + shouldRetryResolution: function (resolution) { return !resolution.resolvedModule || !ts.resolutionExtensionIsTSOrJson(resolution.resolvedModule.extension); }, + reusedNames: reusedNames, + logChanges: logChangesWhenResolvingModule + }); + } + function getResolvedModuleWithFailedLookupLocationsFromCache(moduleName, containingFile) { + var cache = resolvedModuleNames.get(resolutionHost.toPath(containingFile)); + return cache && cache.get(moduleName); + } + function isNodeModulesAtTypesDirectory(dirPath) { + return ts.endsWith(dirPath, "/node_modules/@types"); + } + function getDirectoryToWatchFailedLookupLocation(failedLookupLocation, failedLookupLocationPath) { + if (isInDirectoryPath(rootPath, failedLookupLocationPath)) { + // Ensure failed look up is normalized path + failedLookupLocation = ts.isRootedDiskPath(failedLookupLocation) ? ts.normalizePath(failedLookupLocation) : ts.getNormalizedAbsolutePath(failedLookupLocation, getCurrentDirectory()); + var failedLookupPathSplit = failedLookupLocationPath.split(ts.directorySeparator); + var failedLookupSplit = failedLookupLocation.split(ts.directorySeparator); + ts.Debug.assert(failedLookupSplit.length === failedLookupPathSplit.length, "FailedLookup: " + failedLookupLocation + " failedLookupLocationPath: " + failedLookupLocationPath); + if (failedLookupPathSplit.length > rootSplitLength + 1) { + // Instead of watching root, watch directory in root to avoid watching excluded directories not needed for module resolution + return { + dir: failedLookupSplit.slice(0, rootSplitLength + 1).join(ts.directorySeparator), + dirPath: failedLookupPathSplit.slice(0, rootSplitLength + 1).join(ts.directorySeparator) + }; + } + else { + // Always watch root directory non recursively + return { + dir: rootDir, + dirPath: rootPath, + nonRecursive: false + }; + } + } + return getDirectoryToWatchFromFailedLookupLocationDirectory(ts.getDirectoryPath(ts.getNormalizedAbsolutePath(failedLookupLocation, getCurrentDirectory())), ts.getDirectoryPath(failedLookupLocationPath)); + } + function getDirectoryToWatchFromFailedLookupLocationDirectory(dir, dirPath) { + // If directory path contains node module, get the most parent node_modules directory for watching + while (ts.pathContainsNodeModules(dirPath)) { + dir = ts.getDirectoryPath(dir); + dirPath = ts.getDirectoryPath(dirPath); + } + // If the directory is node_modules use it to watch, always watch it recursively + if (ts.isNodeModulesDirectory(dirPath)) { + return canWatchDirectory(ts.getDirectoryPath(dirPath)) ? { dir: dir, dirPath: dirPath } : undefined; + } + var nonRecursive = true; + // Use some ancestor of the root directory + var subDirectoryPath, subDirectory; + if (rootPath !== undefined) { + while (!isInDirectoryPath(dirPath, rootPath)) { + var parentPath = ts.getDirectoryPath(dirPath); + if (parentPath === dirPath) { + break; + } + nonRecursive = false; + subDirectoryPath = dirPath; + subDirectory = dir; + dirPath = parentPath; + dir = ts.getDirectoryPath(dir); + } + } + return canWatchDirectory(dirPath) ? { dir: subDirectory || dir, dirPath: subDirectoryPath || dirPath, nonRecursive: nonRecursive } : undefined; + } + function isPathWithDefaultFailedLookupExtension(path) { + return ts.fileExtensionIsOneOf(path, failedLookupDefaultExtensions); + } + function watchFailedLookupLocationsOfExternalModuleResolutions(name, resolution, filePath, getResolutionWithResolvedFileName) { + if (resolution.refCount) { + resolution.refCount++; + ts.Debug.assertDefined(resolution.files); + } + else { + resolution.refCount = 1; + ts.Debug.assert(resolution.files === undefined); + if (ts.isExternalModuleNameRelative(name)) { + watchFailedLookupLocationOfResolution(resolution); + } + else { + nonRelativeExternalModuleResolutions.add(name, resolution); + } + var resolved = getResolutionWithResolvedFileName(resolution); + if (resolved && resolved.resolvedFileName) { + resolvedFileToResolution.add(resolutionHost.toPath(resolved.resolvedFileName), resolution); + } + } + (resolution.files || (resolution.files = [])).push(filePath); + } + function watchFailedLookupLocationOfResolution(resolution) { + ts.Debug.assert(!!resolution.refCount); + var failedLookupLocations = resolution.failedLookupLocations; + if (!failedLookupLocations.length) + return; + resolutionsWithFailedLookups.push(resolution); + var setAtRoot = false; + for (var _i = 0, failedLookupLocations_1 = failedLookupLocations; _i < failedLookupLocations_1.length; _i++) { + var failedLookupLocation = failedLookupLocations_1[_i]; + var failedLookupLocationPath = resolutionHost.toPath(failedLookupLocation); + var toWatch = getDirectoryToWatchFailedLookupLocation(failedLookupLocation, failedLookupLocationPath); + if (toWatch) { + var dir = toWatch.dir, dirPath = toWatch.dirPath, nonRecursive = toWatch.nonRecursive; + // If the failed lookup location path is not one of the supported extensions, + // store it in the custom path + if (!isPathWithDefaultFailedLookupExtension(failedLookupLocationPath)) { + var refCount = customFailedLookupPaths.get(failedLookupLocationPath) || 0; + customFailedLookupPaths.set(failedLookupLocationPath, refCount + 1); + } + if (dirPath === rootPath) { + ts.Debug.assert(!nonRecursive); + setAtRoot = true; + } + else { + setDirectoryWatcher(dir, dirPath, nonRecursive); + } + } + } + if (setAtRoot) { + // This is always non recursive + setDirectoryWatcher(rootDir, rootPath, /*nonRecursive*/ true); // TODO: GH#18217 + } + } + function watchFailedLookupLocationOfNonRelativeModuleResolutions(resolutions, name) { + var program = resolutionHost.getCurrentProgram(); + if (!program || !program.getTypeChecker().tryFindAmbientModuleWithoutAugmentations(name)) { + resolutions.forEach(watchFailedLookupLocationOfResolution); + } + } + function setDirectoryWatcher(dir, dirPath, nonRecursive) { + var dirWatcher = directoryWatchesOfFailedLookups.get(dirPath); + if (dirWatcher) { + ts.Debug.assert(!!nonRecursive === !!dirWatcher.nonRecursive); + dirWatcher.refCount++; + } + else { + directoryWatchesOfFailedLookups.set(dirPath, { watcher: createDirectoryWatcher(dir, dirPath, nonRecursive), refCount: 1, nonRecursive: nonRecursive }); + } + } + function stopWatchFailedLookupLocationOfResolution(resolution, filePath, getResolutionWithResolvedFileName) { + ts.unorderedRemoveItem(ts.Debug.assertDefined(resolution.files), filePath); + resolution.refCount--; + if (resolution.refCount) { + return; + } + var resolved = getResolutionWithResolvedFileName(resolution); + if (resolved && resolved.resolvedFileName) { + resolvedFileToResolution.remove(resolutionHost.toPath(resolved.resolvedFileName), resolution); + } + if (!ts.unorderedRemoveItem(resolutionsWithFailedLookups, resolution)) { + // If not watching failed lookups, it wont be there in resolutionsWithFailedLookups + return; + } + var failedLookupLocations = resolution.failedLookupLocations; + var removeAtRoot = false; + for (var _i = 0, failedLookupLocations_2 = failedLookupLocations; _i < failedLookupLocations_2.length; _i++) { + var failedLookupLocation = failedLookupLocations_2[_i]; + var failedLookupLocationPath = resolutionHost.toPath(failedLookupLocation); + var toWatch = getDirectoryToWatchFailedLookupLocation(failedLookupLocation, failedLookupLocationPath); + if (toWatch) { + var dirPath = toWatch.dirPath; + var refCount = customFailedLookupPaths.get(failedLookupLocationPath); + if (refCount) { + if (refCount === 1) { + customFailedLookupPaths.delete(failedLookupLocationPath); + } + else { + ts.Debug.assert(refCount > 1); + customFailedLookupPaths.set(failedLookupLocationPath, refCount - 1); + } + } + if (dirPath === rootPath) { + removeAtRoot = true; + } + else { + removeDirectoryWatcher(dirPath); + } + } + } + if (removeAtRoot) { + removeDirectoryWatcher(rootPath); + } + } + function removeDirectoryWatcher(dirPath) { + var dirWatcher = directoryWatchesOfFailedLookups.get(dirPath); + // Do not close the watcher yet since it might be needed by other failed lookup locations. + dirWatcher.refCount--; + } + function createDirectoryWatcher(directory, dirPath, nonRecursive) { + return resolutionHost.watchDirectoryOfFailedLookupLocation(directory, function (fileOrDirectory) { + var fileOrDirectoryPath = resolutionHost.toPath(fileOrDirectory); + if (cachedDirectoryStructureHost) { + // Since the file existence changed, update the sourceFiles cache + cachedDirectoryStructureHost.addOrDeleteFileOrDirectory(fileOrDirectory, fileOrDirectoryPath); + } + if (invalidateResolutionOfFailedLookupLocation(fileOrDirectoryPath, dirPath === fileOrDirectoryPath)) { + resolutionHost.onInvalidatedResolution(); + } + }, nonRecursive ? 0 /* None */ : 1 /* Recursive */); + } + function removeResolutionsOfFileFromCache(cache, filePath, getResolutionWithResolvedFileName) { + // Deleted file, stop watching failed lookups for all the resolutions in the file + var resolutions = cache.get(filePath); + if (resolutions) { + resolutions.forEach(function (resolution) { return stopWatchFailedLookupLocationOfResolution(resolution, filePath, getResolutionWithResolvedFileName); }); + cache.delete(filePath); + } + } + function removeResolutionsFromProjectReferenceRedirects(filePath) { + if (!ts.fileExtensionIs(filePath, ".json" /* Json */)) { + return; + } + var program = resolutionHost.getCurrentProgram(); + if (!program) { + return; + } + // If this file is input file for the referenced project, get it + var resolvedProjectReference = program.getResolvedProjectReferenceByPath(filePath); + if (!resolvedProjectReference) { + return; + } + // filePath is for the projectReference and the containing file is from this project reference, invalidate the resolution + resolvedProjectReference.commandLine.fileNames.forEach(function (f) { return removeResolutionsOfFile(resolutionHost.toPath(f)); }); + } + function removeResolutionsOfFile(filePath) { + removeResolutionsOfFileFromCache(resolvedModuleNames, filePath, getResolvedModule); + removeResolutionsOfFileFromCache(resolvedTypeReferenceDirectives, filePath, getResolvedTypeReferenceDirective); + } + function invalidateResolution(resolution) { + resolution.isInvalidated = true; + var changedInAutoTypeReferenced = false; + for (var _i = 0, _a = ts.Debug.assertDefined(resolution.files); _i < _a.length; _i++) { + var containingFilePath = _a[_i]; + (filesWithInvalidatedResolutions || (filesWithInvalidatedResolutions = ts.createMap())).set(containingFilePath, true); + // When its a file with inferred types resolution, invalidate type reference directive resolution + changedInAutoTypeReferenced = changedInAutoTypeReferenced || containingFilePath.endsWith(ts.inferredTypesContainingFile); + } + if (changedInAutoTypeReferenced) { + resolutionHost.onChangedAutomaticTypeDirectiveNames(); + } + } + function invalidateResolutionOfFile(filePath) { + removeResolutionsOfFile(filePath); + // Resolution is invalidated if the resulting file name is same as the deleted file path + ts.forEach(resolvedFileToResolution.get(filePath), invalidateResolution); + } + function setFilesWithInvalidatedNonRelativeUnresolvedImports(filesMap) { + ts.Debug.assert(filesWithInvalidatedNonRelativeUnresolvedImports === filesMap || filesWithInvalidatedNonRelativeUnresolvedImports === undefined); + filesWithInvalidatedNonRelativeUnresolvedImports = filesMap; + } + function invalidateResolutionOfFailedLookupLocation(fileOrDirectoryPath, isCreatingWatchedDirectory) { + var isChangedFailedLookupLocation; + if (isCreatingWatchedDirectory) { + // Watching directory is created + // Invalidate any resolution has failed lookup in this directory + isChangedFailedLookupLocation = function (location) { return isInDirectoryPath(fileOrDirectoryPath, resolutionHost.toPath(location)); }; + } + else { + // If something to do with folder/file starting with "." in node_modules folder, skip it + var updatedPath = removeIgnoredPath(fileOrDirectoryPath); + if (!updatedPath) + return false; + fileOrDirectoryPath = updatedPath; + // prevent saving an open file from over-eagerly triggering invalidation + if (resolutionHost.fileIsOpen(fileOrDirectoryPath)) { + return false; + } + // Some file or directory in the watching directory is created + // Return early if it does not have any of the watching extension or not the custom failed lookup path + var dirOfFileOrDirectory = ts.getDirectoryPath(fileOrDirectoryPath); + if (isNodeModulesAtTypesDirectory(fileOrDirectoryPath) || ts.isNodeModulesDirectory(fileOrDirectoryPath) || + isNodeModulesAtTypesDirectory(dirOfFileOrDirectory) || ts.isNodeModulesDirectory(dirOfFileOrDirectory)) { + // Invalidate any resolution from this directory + isChangedFailedLookupLocation = function (location) { + var locationPath = resolutionHost.toPath(location); + return locationPath === fileOrDirectoryPath || ts.startsWith(resolutionHost.toPath(location), fileOrDirectoryPath); + }; + } + else { + if (!isPathWithDefaultFailedLookupExtension(fileOrDirectoryPath) && !customFailedLookupPaths.has(fileOrDirectoryPath)) { + return false; + } + // Ignore emits from the program + if (ts.isEmittedFileOfProgram(resolutionHost.getCurrentProgram(), fileOrDirectoryPath)) { + return false; + } + // Resolution need to be invalidated if failed lookup location is same as the file or directory getting created + isChangedFailedLookupLocation = function (location) { return resolutionHost.toPath(location) === fileOrDirectoryPath; }; + } + } + var invalidated = false; + // Resolution is invalidated if the resulting file name is same as the deleted file path + for (var _i = 0, resolutionsWithFailedLookups_1 = resolutionsWithFailedLookups; _i < resolutionsWithFailedLookups_1.length; _i++) { + var resolution = resolutionsWithFailedLookups_1[_i]; + if (resolution.failedLookupLocations.some(isChangedFailedLookupLocation)) { + invalidateResolution(resolution); + invalidated = true; + } + } + return invalidated; + } + function closeTypeRootsWatch() { + ts.clearMap(typeRootsWatches, ts.closeFileWatcher); + } + function getDirectoryToWatchFailedLookupLocationFromTypeRoot(typeRoot, typeRootPath) { + if (isInDirectoryPath(rootPath, typeRootPath)) { + return rootPath; + } + var toWatch = getDirectoryToWatchFromFailedLookupLocationDirectory(typeRoot, typeRootPath); + return toWatch && directoryWatchesOfFailedLookups.has(toWatch.dirPath) ? toWatch.dirPath : undefined; + } + function createTypeRootsWatch(typeRootPath, typeRoot) { + // Create new watch and recursive info + return resolutionHost.watchTypeRootsDirectory(typeRoot, function (fileOrDirectory) { + var fileOrDirectoryPath = resolutionHost.toPath(fileOrDirectory); + if (cachedDirectoryStructureHost) { + // Since the file existence changed, update the sourceFiles cache + cachedDirectoryStructureHost.addOrDeleteFileOrDirectory(fileOrDirectory, fileOrDirectoryPath); + } + // For now just recompile + // We could potentially store more data here about whether it was/would be really be used or not + // and with that determine to trigger compilation but for now this is enough + resolutionHost.onChangedAutomaticTypeDirectiveNames(); + // Since directory watchers invoked are flaky, the failed lookup location events might not be triggered + // So handle to failed lookup locations here as well to ensure we are invalidating resolutions + var dirPath = getDirectoryToWatchFailedLookupLocationFromTypeRoot(typeRoot, typeRootPath); + if (dirPath && invalidateResolutionOfFailedLookupLocation(fileOrDirectoryPath, dirPath === fileOrDirectoryPath)) { + resolutionHost.onInvalidatedResolution(); + } + }, 1 /* Recursive */); + } + /** + * Watches the types that would get added as part of getAutomaticTypeDirectiveNames + * To be called when compiler options change + */ + function updateTypeRootsWatch() { + var options = resolutionHost.getCompilationSettings(); + if (options.types) { + // No need to do any watch since resolution cache is going to handle the failed lookups + // for the types added by this + closeTypeRootsWatch(); + return; + } + // we need to assume the directories exist to ensure that we can get all the type root directories that get included + // But filter directories that are at root level to say directory doesnt exist, so that we arent watching them + var typeRoots = ts.getEffectiveTypeRoots(options, { directoryExists: directoryExistsForTypeRootWatch, getCurrentDirectory: getCurrentDirectory }); + if (typeRoots) { + ts.mutateMap(typeRootsWatches, ts.arrayToMap(typeRoots, function (tr) { return resolutionHost.toPath(tr); }), { + createNewValue: createTypeRootsWatch, + onDeleteValue: ts.closeFileWatcher + }); + } + else { + closeTypeRootsWatch(); + } + } + /** + * Use this function to return if directory exists to get type roots to watch + * If we return directory exists then only the paths will be added to type roots + * Hence return true for all directories except root directories which are filtered from watching + */ + function directoryExistsForTypeRootWatch(nodeTypesDirectory) { + var dir = ts.getDirectoryPath(ts.getDirectoryPath(nodeTypesDirectory)); + var dirPath = resolutionHost.toPath(dir); + return dirPath === rootPath || canWatchDirectory(dirPath); + } + } + ts.createResolutionCache = createResolutionCache; +})(ts || (ts = {})); +// Used by importFixes, getEditsForFileRename, and declaration emit to synthesize import module specifiers. +/* @internal */ +var ts; +(function (ts) { + var moduleSpecifiers; + (function (moduleSpecifiers) { + var RelativePreference; + (function (RelativePreference) { + RelativePreference[RelativePreference["Relative"] = 0] = "Relative"; + RelativePreference[RelativePreference["NonRelative"] = 1] = "NonRelative"; + RelativePreference[RelativePreference["Auto"] = 2] = "Auto"; + })(RelativePreference || (RelativePreference = {})); + // See UserPreferences#importPathEnding + var Ending; + (function (Ending) { + Ending[Ending["Minimal"] = 0] = "Minimal"; + Ending[Ending["Index"] = 1] = "Index"; + Ending[Ending["JsExtension"] = 2] = "JsExtension"; + })(Ending || (Ending = {})); + function getPreferences(_a, compilerOptions, importingSourceFile) { + var importModuleSpecifierPreference = _a.importModuleSpecifierPreference, importModuleSpecifierEnding = _a.importModuleSpecifierEnding; + return { + relativePreference: importModuleSpecifierPreference === "relative" ? 0 /* Relative */ : importModuleSpecifierPreference === "non-relative" ? 1 /* NonRelative */ : 2 /* Auto */, + ending: getEnding(), + }; + function getEnding() { + switch (importModuleSpecifierEnding) { + case "minimal": return 0 /* Minimal */; + case "index": return 1 /* Index */; + case "js": return 2 /* JsExtension */; + default: return usesJsExtensionOnImports(importingSourceFile) ? 2 /* JsExtension */ + : ts.getEmitModuleResolutionKind(compilerOptions) !== ts.ModuleResolutionKind.NodeJs ? 1 /* Index */ : 0 /* Minimal */; + } + } + } + function getPreferencesForUpdate(compilerOptions, oldImportSpecifier) { + return { + relativePreference: ts.isExternalModuleNameRelative(oldImportSpecifier) ? 0 /* Relative */ : 1 /* NonRelative */, + ending: ts.hasJSFileExtension(oldImportSpecifier) ? + 2 /* JsExtension */ : + ts.getEmitModuleResolutionKind(compilerOptions) !== ts.ModuleResolutionKind.NodeJs || ts.endsWith(oldImportSpecifier, "index") ? 1 /* Index */ : 0 /* Minimal */, + }; + } + function updateModuleSpecifier(compilerOptions, importingSourceFileName, toFileName, host, oldImportSpecifier) { + var res = getModuleSpecifierWorker(compilerOptions, importingSourceFileName, toFileName, host, getPreferencesForUpdate(compilerOptions, oldImportSpecifier)); + if (res === oldImportSpecifier) + return undefined; + return res; + } + moduleSpecifiers.updateModuleSpecifier = updateModuleSpecifier; + // Note: importingSourceFile is just for usesJsExtensionOnImports + function getModuleSpecifier(compilerOptions, importingSourceFile, importingSourceFileName, toFileName, host, preferences) { + if (preferences === void 0) { preferences = {}; } + return getModuleSpecifierWorker(compilerOptions, importingSourceFileName, toFileName, host, getPreferences(preferences, compilerOptions, importingSourceFile)); + } + moduleSpecifiers.getModuleSpecifier = getModuleSpecifier; + function getNodeModulesPackageName(compilerOptions, importingSourceFileName, nodeModulesFileName, host) { + var info = getInfo(importingSourceFileName, host); + var modulePaths = getAllModulePaths(importingSourceFileName, nodeModulesFileName, host); + return ts.firstDefined(modulePaths, function (moduleFileName) { return tryGetModuleNameAsNodeModule(moduleFileName, info, host, compilerOptions, /*packageNameOnly*/ true); }); + } + moduleSpecifiers.getNodeModulesPackageName = getNodeModulesPackageName; + function getModuleSpecifierWorker(compilerOptions, importingSourceFileName, toFileName, host, preferences) { + var info = getInfo(importingSourceFileName, host); + var modulePaths = getAllModulePaths(importingSourceFileName, toFileName, host); + return ts.firstDefined(modulePaths, function (moduleFileName) { return tryGetModuleNameAsNodeModule(moduleFileName, info, host, compilerOptions); }) || + getLocalModuleSpecifier(toFileName, info, compilerOptions, preferences); + } + /** Returns an import for each symlink and for the realpath. */ + function getModuleSpecifiers(moduleSymbol, compilerOptions, importingSourceFile, host, userPreferences) { + var ambient = tryGetModuleNameFromAmbientModule(moduleSymbol); + if (ambient) + return [ambient]; + var info = getInfo(importingSourceFile.path, host); + var moduleSourceFile = ts.getSourceFileOfNode(moduleSymbol.valueDeclaration || ts.getNonAugmentationDeclaration(moduleSymbol)); + var modulePaths = getAllModulePaths(importingSourceFile.path, moduleSourceFile.originalFileName, host); + var preferences = getPreferences(userPreferences, compilerOptions, importingSourceFile); + var global = ts.mapDefined(modulePaths, function (moduleFileName) { return tryGetModuleNameAsNodeModule(moduleFileName, info, host, compilerOptions); }); + return global.length ? global : modulePaths.map(function (moduleFileName) { return getLocalModuleSpecifier(moduleFileName, info, compilerOptions, preferences); }); + } + moduleSpecifiers.getModuleSpecifiers = getModuleSpecifiers; + // importingSourceFileName is separate because getEditsForFileRename may need to specify an updated path + function getInfo(importingSourceFileName, host) { + var getCanonicalFileName = ts.createGetCanonicalFileName(host.useCaseSensitiveFileNames ? host.useCaseSensitiveFileNames() : true); + var sourceDirectory = ts.getDirectoryPath(importingSourceFileName); + return { getCanonicalFileName: getCanonicalFileName, sourceDirectory: sourceDirectory }; + } + function getLocalModuleSpecifier(moduleFileName, _a, compilerOptions, _b) { + var getCanonicalFileName = _a.getCanonicalFileName, sourceDirectory = _a.sourceDirectory; + var ending = _b.ending, relativePreference = _b.relativePreference; + var baseUrl = compilerOptions.baseUrl, paths = compilerOptions.paths, rootDirs = compilerOptions.rootDirs; + var relativePath = rootDirs && tryGetModuleNameFromRootDirs(rootDirs, moduleFileName, sourceDirectory, getCanonicalFileName, ending, compilerOptions) || + removeExtensionAndIndexPostFix(ts.ensurePathIsNonModuleName(ts.getRelativePathFromDirectory(sourceDirectory, moduleFileName, getCanonicalFileName)), ending, compilerOptions); + if (!baseUrl || relativePreference === 0 /* Relative */) { + return relativePath; + } + var relativeToBaseUrl = getRelativePathIfInDirectory(moduleFileName, baseUrl, getCanonicalFileName); + if (!relativeToBaseUrl) { + return relativePath; + } + var importRelativeToBaseUrl = removeExtensionAndIndexPostFix(relativeToBaseUrl, ending, compilerOptions); + var fromPaths = paths && tryGetModuleNameFromPaths(ts.removeFileExtension(relativeToBaseUrl), importRelativeToBaseUrl, paths); + var nonRelative = fromPaths === undefined ? importRelativeToBaseUrl : fromPaths; + if (relativePreference === 1 /* NonRelative */) { + return nonRelative; + } + if (relativePreference !== 2 /* Auto */) + ts.Debug.assertNever(relativePreference); + // Prefer a relative import over a baseUrl import if it has fewer components. + return isPathRelativeToParent(nonRelative) || countPathComponents(relativePath) < countPathComponents(nonRelative) ? relativePath : nonRelative; + } + function countPathComponents(path) { + var count = 0; + for (var i = ts.startsWith(path, "./") ? 2 : 0; i < path.length; i++) { + if (path.charCodeAt(i) === 47 /* slash */) + count++; + } + return count; + } + moduleSpecifiers.countPathComponents = countPathComponents; + function usesJsExtensionOnImports(_a) { + var imports = _a.imports; + return ts.firstDefined(imports, function (_a) { + var text = _a.text; + return ts.pathIsRelative(text) ? ts.hasJSFileExtension(text) : undefined; + }) || false; + } + function numberOfDirectorySeparators(str) { + var match = str.match(/\//g); + return match ? match.length : 0; + } + function comparePathsByNumberOfDirectorySeparators(a, b) { + return ts.compareValues(numberOfDirectorySeparators(a), numberOfDirectorySeparators(b)); + } + function forEachFileNameOfModule(importingFileName, importedFileName, host, preferSymlinks, cb) { + var getCanonicalFileName = ts.hostGetCanonicalFileName(host); + var cwd = host.getCurrentDirectory(); + var referenceRedirect = host.isSourceOfProjectReferenceRedirect(importedFileName) ? host.getProjectReferenceRedirect(importedFileName) : undefined; + var redirects = host.redirectTargetsMap.get(ts.toPath(importedFileName, cwd, getCanonicalFileName)) || ts.emptyArray; + var importedFileNames = __spreadArrays((referenceRedirect ? [referenceRedirect] : ts.emptyArray), [importedFileName], redirects); + var targets = importedFileNames.map(function (f) { return ts.getNormalizedAbsolutePath(f, cwd); }); + if (!preferSymlinks) { + var result_12 = ts.forEach(targets, cb); + if (result_12) + return result_12; + } + var links = host.getProbableSymlinks + ? host.getProbableSymlinks(host.getSourceFiles()) + : ts.discoverProbableSymlinks(host.getSourceFiles(), getCanonicalFileName, cwd); + var compareStrings = (!host.useCaseSensitiveFileNames || host.useCaseSensitiveFileNames()) ? ts.compareStringsCaseSensitive : ts.compareStringsCaseInsensitive; + var result = ts.forEachEntry(links, function (resolved, path) { + if (ts.startsWithDirectory(importingFileName, resolved, getCanonicalFileName)) { + return undefined; // Don't want to a package to globally import from itself + } + var target = ts.find(targets, function (t) { return compareStrings(t.slice(0, resolved.length + 1), resolved + "/") === 0 /* EqualTo */; }); + if (target === undefined) + return undefined; + var relative = ts.getRelativePathFromDirectory(resolved, target, getCanonicalFileName); + var option = ts.resolvePath(path, relative); + if (!host.fileExists || host.fileExists(option)) { + var result_13 = cb(option); + if (result_13) + return result_13; + } + }); + return result || + (preferSymlinks ? ts.forEach(targets, cb) : undefined); + } + moduleSpecifiers.forEachFileNameOfModule = forEachFileNameOfModule; + /** + * Looks for existing imports that use symlinks to this module. + * Symlinks will be returned first so they are preferred over the real path. + */ + function getAllModulePaths(importingFileName, importedFileName, host) { + var cwd = host.getCurrentDirectory(); + var getCanonicalFileName = ts.hostGetCanonicalFileName(host); + var allFileNames = ts.createMap(); + var importedFileFromNodeModules = false; + forEachFileNameOfModule(importingFileName, importedFileName, host, + /*preferSymlinks*/ true, function (path) { + // dont return value, so we collect everything + allFileNames.set(path, getCanonicalFileName(path)); + importedFileFromNodeModules = importedFileFromNodeModules || ts.pathContainsNodeModules(path); + }); + // Sort by paths closest to importing file Name directory + var sortedPaths = []; + var _loop_20 = function (directory) { + var directoryStart = ts.ensureTrailingDirectorySeparator(directory); + var pathsInDirectory; + allFileNames.forEach(function (canonicalFileName, fileName) { + if (ts.startsWith(canonicalFileName, directoryStart)) { + // If the importedFile is from node modules, use only paths in node_modules folder as option + if (!importedFileFromNodeModules || ts.pathContainsNodeModules(fileName)) { + (pathsInDirectory || (pathsInDirectory = [])).push(fileName); + } + allFileNames.delete(fileName); + } + }); + if (pathsInDirectory) { + if (pathsInDirectory.length > 1) { + pathsInDirectory.sort(comparePathsByNumberOfDirectorySeparators); + } + sortedPaths.push.apply(sortedPaths, pathsInDirectory); + } + var newDirectory = ts.getDirectoryPath(directory); + if (newDirectory === directory) + return out_directory_1 = directory, "break"; + directory = newDirectory; + out_directory_1 = directory; + }; + var out_directory_1; + for (var directory = ts.getDirectoryPath(ts.toPath(importingFileName, cwd, getCanonicalFileName)); allFileNames.size !== 0;) { + var state_8 = _loop_20(directory); + directory = out_directory_1; + if (state_8 === "break") + break; + } + if (allFileNames.size) { + var remainingPaths = ts.arrayFrom(allFileNames.values()); + if (remainingPaths.length > 1) + remainingPaths.sort(comparePathsByNumberOfDirectorySeparators); + sortedPaths.push.apply(sortedPaths, remainingPaths); + } + return sortedPaths; + } + function tryGetModuleNameFromAmbientModule(moduleSymbol) { + var decl = ts.find(moduleSymbol.declarations, function (d) { return ts.isNonGlobalAmbientModule(d) && (!ts.isExternalModuleAugmentation(d) || !ts.isExternalModuleNameRelative(ts.getTextOfIdentifierOrLiteral(d.name))); }); + if (decl) { + return decl.name.text; + } + } + function tryGetModuleNameFromPaths(relativeToBaseUrlWithIndex, relativeToBaseUrl, paths) { + for (var key in paths) { + for (var _i = 0, _a = paths[key]; _i < _a.length; _i++) { + var patternText_1 = _a[_i]; + var pattern = ts.removeFileExtension(ts.normalizePath(patternText_1)); + var indexOfStar = pattern.indexOf("*"); + if (indexOfStar !== -1) { + var prefix = pattern.substr(0, indexOfStar); + var suffix = pattern.substr(indexOfStar + 1); + if (relativeToBaseUrl.length >= prefix.length + suffix.length && + ts.startsWith(relativeToBaseUrl, prefix) && + ts.endsWith(relativeToBaseUrl, suffix) || + !suffix && relativeToBaseUrl === ts.removeTrailingDirectorySeparator(prefix)) { + var matchedStar = relativeToBaseUrl.substr(prefix.length, relativeToBaseUrl.length - suffix.length); + return key.replace("*", matchedStar); + } + } + else if (pattern === relativeToBaseUrl || pattern === relativeToBaseUrlWithIndex) { + return key; + } + } + } + } + function tryGetModuleNameFromRootDirs(rootDirs, moduleFileName, sourceDirectory, getCanonicalFileName, ending, compilerOptions) { + var normalizedTargetPath = getPathRelativeToRootDirs(moduleFileName, rootDirs, getCanonicalFileName); + if (normalizedTargetPath === undefined) { + return undefined; + } + var normalizedSourcePath = getPathRelativeToRootDirs(sourceDirectory, rootDirs, getCanonicalFileName); + var relativePath = normalizedSourcePath !== undefined ? ts.ensurePathIsNonModuleName(ts.getRelativePathFromDirectory(normalizedSourcePath, normalizedTargetPath, getCanonicalFileName)) : normalizedTargetPath; + return ts.getEmitModuleResolutionKind(compilerOptions) === ts.ModuleResolutionKind.NodeJs + ? removeExtensionAndIndexPostFix(relativePath, ending, compilerOptions) + : ts.removeFileExtension(relativePath); + } + function tryGetModuleNameAsNodeModule(moduleFileName, _a, host, options, packageNameOnly) { + var getCanonicalFileName = _a.getCanonicalFileName, sourceDirectory = _a.sourceDirectory; + if (!host.fileExists || !host.readFile) { + return undefined; + } + var parts = getNodeModulePathParts(moduleFileName); + if (!parts) { + return undefined; + } + // Simplify the full file path to something that can be resolved by Node. + var moduleSpecifier = moduleFileName; + if (!packageNameOnly) { + var packageRootIndex = parts.packageRootIndex; + var moduleFileNameForExtensionless = void 0; + while (true) { + // If the module could be imported by a directory name, use that directory's name + var _b = tryDirectoryWithPackageJson(packageRootIndex), moduleFileToTry = _b.moduleFileToTry, packageRootPath = _b.packageRootPath; + if (packageRootPath) { + moduleSpecifier = packageRootPath; + break; + } + if (!moduleFileNameForExtensionless) + moduleFileNameForExtensionless = moduleFileToTry; + // try with next level of directory + packageRootIndex = moduleFileName.indexOf(ts.directorySeparator, packageRootIndex + 1); + if (packageRootIndex === -1) { + moduleSpecifier = getExtensionlessFileName(moduleFileNameForExtensionless); + break; + } + } + } + var globalTypingsCacheLocation = host.getGlobalTypingsCacheLocation && host.getGlobalTypingsCacheLocation(); + // Get a path that's relative to node_modules or the importing file's path + // if node_modules folder is in this folder or any of its parent folders, no need to keep it. + var pathToTopLevelNodeModules = getCanonicalFileName(moduleSpecifier.substring(0, parts.topLevelNodeModulesIndex)); + if (!(ts.startsWith(sourceDirectory, pathToTopLevelNodeModules) || globalTypingsCacheLocation && ts.startsWith(getCanonicalFileName(globalTypingsCacheLocation), pathToTopLevelNodeModules))) { + return undefined; + } + // If the module was found in @types, get the actual Node package name + var nodeModulesDirectoryName = moduleSpecifier.substring(parts.topLevelPackageNameIndex + 1); + var packageName = ts.getPackageNameFromTypesPackageName(nodeModulesDirectoryName); + // For classic resolution, only allow importing from node_modules/@types, not other node_modules + return ts.getEmitModuleResolutionKind(options) !== ts.ModuleResolutionKind.NodeJs && packageName === nodeModulesDirectoryName ? undefined : packageName; + function tryDirectoryWithPackageJson(packageRootIndex) { + var packageRootPath = moduleFileName.substring(0, packageRootIndex); + var packageJsonPath = ts.combinePaths(packageRootPath, "package.json"); + var moduleFileToTry = moduleFileName; + if (host.fileExists(packageJsonPath)) { + var packageJsonContent = JSON.parse(host.readFile(packageJsonPath)); + var versionPaths = packageJsonContent.typesVersions + ? ts.getPackageJsonTypesVersionsPaths(packageJsonContent.typesVersions) + : undefined; + if (versionPaths) { + var subModuleName = moduleFileName.slice(packageRootPath.length + 1); + var fromPaths = tryGetModuleNameFromPaths(ts.removeFileExtension(subModuleName), removeExtensionAndIndexPostFix(subModuleName, 0 /* Minimal */, options), versionPaths.paths); + if (fromPaths !== undefined) { + moduleFileToTry = ts.combinePaths(packageRootPath, fromPaths); + } + } + // If the file is the main module, it can be imported by the package name + var mainFileRelative = packageJsonContent.typings || packageJsonContent.types || packageJsonContent.main; + if (ts.isString(mainFileRelative)) { + var mainExportFile = ts.toPath(mainFileRelative, packageRootPath, getCanonicalFileName); + if (ts.removeFileExtension(mainExportFile) === ts.removeFileExtension(getCanonicalFileName(moduleFileToTry))) { + return { packageRootPath: packageRootPath, moduleFileToTry: moduleFileToTry }; + } + } + } + return { moduleFileToTry: moduleFileToTry }; + } + function getExtensionlessFileName(path) { + // We still have a file name - remove the extension + var fullModulePathWithoutExtension = ts.removeFileExtension(path); + // If the file is /index, it can be imported by its directory name + // IFF there is not _also_ a file by the same name + if (getCanonicalFileName(fullModulePathWithoutExtension.substring(parts.fileNameIndex)) === "/index" && !tryGetAnyFileFromPath(host, fullModulePathWithoutExtension.substring(0, parts.fileNameIndex))) { + return fullModulePathWithoutExtension.substring(0, parts.fileNameIndex); + } + return fullModulePathWithoutExtension; + } + } + function tryGetAnyFileFromPath(host, path) { + if (!host.fileExists) + return; + // We check all js, `node` and `json` extensions in addition to TS, since node module resolution would also choose those over the directory + var extensions = ts.getSupportedExtensions({ allowJs: true }, [{ extension: "node", isMixedContent: false }, { extension: "json", isMixedContent: false, scriptKind: 6 /* JSON */ }]); + for (var _i = 0, extensions_3 = extensions; _i < extensions_3.length; _i++) { + var e = extensions_3[_i]; + var fullPath = path + e; + if (host.fileExists(fullPath)) { + return fullPath; + } + } + } + function getNodeModulePathParts(fullPath) { + // If fullPath can't be valid module file within node_modules, returns undefined. + // Example of expected pattern: /base/path/node_modules/[@scope/otherpackage/@otherscope/node_modules/]package/[subdirectory/]file.js + // Returns indices: ^ ^ ^ ^ + var topLevelNodeModulesIndex = 0; + var topLevelPackageNameIndex = 0; + var packageRootIndex = 0; + var fileNameIndex = 0; + var States; + (function (States) { + States[States["BeforeNodeModules"] = 0] = "BeforeNodeModules"; + States[States["NodeModules"] = 1] = "NodeModules"; + States[States["Scope"] = 2] = "Scope"; + States[States["PackageContent"] = 3] = "PackageContent"; + })(States || (States = {})); + var partStart = 0; + var partEnd = 0; + var state = 0 /* BeforeNodeModules */; + while (partEnd >= 0) { + partStart = partEnd; + partEnd = fullPath.indexOf("/", partStart + 1); + switch (state) { + case 0 /* BeforeNodeModules */: + if (fullPath.indexOf(ts.nodeModulesPathPart, partStart) === partStart) { + topLevelNodeModulesIndex = partStart; + topLevelPackageNameIndex = partEnd; + state = 1 /* NodeModules */; + } + break; + case 1 /* NodeModules */: + case 2 /* Scope */: + if (state === 1 /* NodeModules */ && fullPath.charAt(partStart + 1) === "@") { + state = 2 /* Scope */; + } + else { + packageRootIndex = partEnd; + state = 3 /* PackageContent */; + } + break; + case 3 /* PackageContent */: + if (fullPath.indexOf(ts.nodeModulesPathPart, partStart) === partStart) { + state = 1 /* NodeModules */; + } + else { + state = 3 /* PackageContent */; + } + break; + } + } + fileNameIndex = partStart; + return state > 1 /* NodeModules */ ? { topLevelNodeModulesIndex: topLevelNodeModulesIndex, topLevelPackageNameIndex: topLevelPackageNameIndex, packageRootIndex: packageRootIndex, fileNameIndex: fileNameIndex } : undefined; + } + function getPathRelativeToRootDirs(path, rootDirs, getCanonicalFileName) { + return ts.firstDefined(rootDirs, function (rootDir) { + var relativePath = getRelativePathIfInDirectory(path, rootDir, getCanonicalFileName); // TODO: GH#18217 + return isPathRelativeToParent(relativePath) ? undefined : relativePath; + }); + } + function removeExtensionAndIndexPostFix(fileName, ending, options) { + if (ts.fileExtensionIs(fileName, ".json" /* Json */)) + return fileName; + var noExtension = ts.removeFileExtension(fileName); + switch (ending) { + case 0 /* Minimal */: + return ts.removeSuffix(noExtension, "/index"); + case 1 /* Index */: + return noExtension; + case 2 /* JsExtension */: + return noExtension + getJSExtensionForFile(fileName, options); + default: + return ts.Debug.assertNever(ending); + } + } + function getJSExtensionForFile(fileName, options) { + var ext = ts.extensionFromPath(fileName); + switch (ext) { + case ".ts" /* Ts */: + case ".d.ts" /* Dts */: + return ".js" /* Js */; + case ".tsx" /* Tsx */: + return options.jsx === 1 /* Preserve */ ? ".jsx" /* Jsx */ : ".js" /* Js */; + case ".js" /* Js */: + case ".jsx" /* Jsx */: + case ".json" /* Json */: + return ext; + case ".tsbuildinfo" /* TsBuildInfo */: + return ts.Debug.fail("Extension " + ".tsbuildinfo" /* TsBuildInfo */ + " is unsupported:: FileName:: " + fileName); + default: + return ts.Debug.assertNever(ext); + } + } + function getRelativePathIfInDirectory(path, directoryPath, getCanonicalFileName) { + var relativePath = ts.getRelativePathToDirectoryOrUrl(directoryPath, path, directoryPath, getCanonicalFileName, /*isAbsolutePathAnUrl*/ false); + return ts.isRootedDiskPath(relativePath) ? undefined : relativePath; + } + function isPathRelativeToParent(path) { + return ts.startsWith(path, ".."); + } + })(moduleSpecifiers = ts.moduleSpecifiers || (ts.moduleSpecifiers = {})); +})(ts || (ts = {})); +/*@internal*/ +var ts; +(function (ts) { + var sysFormatDiagnosticsHost = ts.sys ? { + getCurrentDirectory: function () { return ts.sys.getCurrentDirectory(); }, + getNewLine: function () { return ts.sys.newLine; }, + getCanonicalFileName: ts.createGetCanonicalFileName(ts.sys.useCaseSensitiveFileNames) + } : undefined; // TODO: GH#18217 + /** + * Create a function that reports error by writing to the system and handles the formating of the diagnostic + */ + function createDiagnosticReporter(system, pretty) { + var host = system === ts.sys ? sysFormatDiagnosticsHost : { + getCurrentDirectory: function () { return system.getCurrentDirectory(); }, + getNewLine: function () { return system.newLine; }, + getCanonicalFileName: ts.createGetCanonicalFileName(system.useCaseSensitiveFileNames), + }; + if (!pretty) { + return function (diagnostic) { return system.write(ts.formatDiagnostic(diagnostic, host)); }; + } + var diagnostics = new Array(1); + return function (diagnostic) { + diagnostics[0] = diagnostic; + system.write(ts.formatDiagnosticsWithColorAndContext(diagnostics, host) + host.getNewLine()); + diagnostics[0] = undefined; // TODO: GH#18217 + }; + } + ts.createDiagnosticReporter = createDiagnosticReporter; + /** + * @returns Whether the screen was cleared. + */ + function clearScreenIfNotWatchingForFileChanges(system, diagnostic, options) { + if (system.clearScreen && + !options.preserveWatchOutput && + !options.extendedDiagnostics && + !options.diagnostics && + ts.contains(ts.screenStartingMessageCodes, diagnostic.code)) { + system.clearScreen(); + return true; + } + return false; + } + ts.screenStartingMessageCodes = [ + ts.Diagnostics.Starting_compilation_in_watch_mode.code, + ts.Diagnostics.File_change_detected_Starting_incremental_compilation.code, + ]; + function getPlainDiagnosticFollowingNewLines(diagnostic, newLine) { + return ts.contains(ts.screenStartingMessageCodes, diagnostic.code) + ? newLine + newLine + : newLine; + } + /** + * Get locale specific time based on whether we are in test mode + */ + function getLocaleTimeString(system) { + return !system.now ? + new Date().toLocaleTimeString() : + system.now().toLocaleTimeString("en-US", { timeZone: "UTC" }); + } + ts.getLocaleTimeString = getLocaleTimeString; + /** + * Create a function that reports watch status by writing to the system and handles the formating of the diagnostic + */ + function createWatchStatusReporter(system, pretty) { + return pretty ? + function (diagnostic, newLine, options) { + clearScreenIfNotWatchingForFileChanges(system, diagnostic, options); + var output = "[" + ts.formatColorAndReset(getLocaleTimeString(system), ts.ForegroundColorEscapeSequences.Grey) + "] "; + output += "" + ts.flattenDiagnosticMessageText(diagnostic.messageText, system.newLine) + (newLine + newLine); + system.write(output); + } : + function (diagnostic, newLine, options) { + var output = ""; + if (!clearScreenIfNotWatchingForFileChanges(system, diagnostic, options)) { + output += newLine; + } + output += getLocaleTimeString(system) + " - "; + output += "" + ts.flattenDiagnosticMessageText(diagnostic.messageText, system.newLine) + getPlainDiagnosticFollowingNewLines(diagnostic, newLine); + system.write(output); + }; + } + ts.createWatchStatusReporter = createWatchStatusReporter; + /** Parses config file using System interface */ + function parseConfigFileWithSystem(configFileName, optionsToExtend, watchOptionsToExtend, system, reportDiagnostic) { + var host = system; + host.onUnRecoverableConfigFileDiagnostic = function (diagnostic) { return reportUnrecoverableDiagnostic(system, reportDiagnostic, diagnostic); }; + var result = ts.getParsedCommandLineOfConfigFile(configFileName, optionsToExtend, host, /*extendedConfigCache*/ undefined, watchOptionsToExtend); + host.onUnRecoverableConfigFileDiagnostic = undefined; // TODO: GH#18217 + return result; + } + ts.parseConfigFileWithSystem = parseConfigFileWithSystem; + function getErrorCountForSummary(diagnostics) { + return ts.countWhere(diagnostics, function (diagnostic) { return diagnostic.category === ts.DiagnosticCategory.Error; }); + } + ts.getErrorCountForSummary = getErrorCountForSummary; + function getWatchErrorSummaryDiagnosticMessage(errorCount) { + return errorCount === 1 ? + ts.Diagnostics.Found_1_error_Watching_for_file_changes : + ts.Diagnostics.Found_0_errors_Watching_for_file_changes; + } + ts.getWatchErrorSummaryDiagnosticMessage = getWatchErrorSummaryDiagnosticMessage; + function getErrorSummaryText(errorCount, newLine) { + if (errorCount === 0) + return ""; + var d = ts.createCompilerDiagnostic(errorCount === 1 ? ts.Diagnostics.Found_1_error : ts.Diagnostics.Found_0_errors, errorCount); + return "" + newLine + ts.flattenDiagnosticMessageText(d.messageText, newLine) + newLine + newLine; + } + ts.getErrorSummaryText = getErrorSummaryText; + function listFiles(program, writeFileName) { + if (program.getCompilerOptions().listFiles || program.getCompilerOptions().listFilesOnly) { + ts.forEach(program.getSourceFiles(), function (file) { + writeFileName(file.fileName); + }); + } + } + ts.listFiles = listFiles; + /** + * Helper that emit files, report diagnostics and lists emitted and/or source files depending on compiler options + */ + function emitFilesAndReportErrors(program, reportDiagnostic, writeFileName, reportSummary, writeFile, cancellationToken, emitOnlyDtsFiles, customTransformers) { + var isListFilesOnly = !!program.getCompilerOptions().listFilesOnly; + // First get and report any syntactic errors. + var allDiagnostics = program.getConfigFileParsingDiagnostics().slice(); + var configFileParsingDiagnosticsLength = allDiagnostics.length; + ts.addRange(allDiagnostics, program.getSyntacticDiagnostics(/*sourceFile*/ undefined, cancellationToken)); + // If we didn't have any syntactic errors, then also try getting the global and + // semantic errors. + if (allDiagnostics.length === configFileParsingDiagnosticsLength) { + ts.addRange(allDiagnostics, program.getOptionsDiagnostics(cancellationToken)); + if (!isListFilesOnly) { + ts.addRange(allDiagnostics, program.getGlobalDiagnostics(cancellationToken)); + if (allDiagnostics.length === configFileParsingDiagnosticsLength) { + ts.addRange(allDiagnostics, program.getSemanticDiagnostics(/*sourceFile*/ undefined, cancellationToken)); + } + } + } + // Emit and report any errors we ran into. + var emitResult = isListFilesOnly + ? { emitSkipped: true, diagnostics: ts.emptyArray } + : program.emit(/*targetSourceFile*/ undefined, writeFile, cancellationToken, emitOnlyDtsFiles, customTransformers); + var emittedFiles = emitResult.emittedFiles, emitDiagnostics = emitResult.diagnostics; + ts.addRange(allDiagnostics, emitDiagnostics); + var diagnostics = ts.sortAndDeduplicateDiagnostics(allDiagnostics); + diagnostics.forEach(reportDiagnostic); + if (writeFileName) { + var currentDir_1 = program.getCurrentDirectory(); + ts.forEach(emittedFiles, function (file) { + var filepath = ts.getNormalizedAbsolutePath(file, currentDir_1); + writeFileName("TSFILE: " + filepath); + }); + listFiles(program, writeFileName); + } + if (reportSummary) { + reportSummary(getErrorCountForSummary(diagnostics)); + } + return { + emitResult: emitResult, + diagnostics: diagnostics, + }; + } + ts.emitFilesAndReportErrors = emitFilesAndReportErrors; + function emitFilesAndReportErrorsAndGetExitStatus(program, reportDiagnostic, writeFileName, reportSummary, writeFile, cancellationToken, emitOnlyDtsFiles, customTransformers) { + var _a = emitFilesAndReportErrors(program, reportDiagnostic, writeFileName, reportSummary, writeFile, cancellationToken, emitOnlyDtsFiles, customTransformers), emitResult = _a.emitResult, diagnostics = _a.diagnostics; + if (emitResult.emitSkipped && diagnostics.length > 0) { + // If the emitter didn't emit anything, then pass that value along. + return ts.ExitStatus.DiagnosticsPresent_OutputsSkipped; + } + else if (diagnostics.length > 0) { + // The emitter emitted something, inform the caller if that happened in the presence + // of diagnostics or not. + return ts.ExitStatus.DiagnosticsPresent_OutputsGenerated; + } + return ts.ExitStatus.Success; + } + ts.emitFilesAndReportErrorsAndGetExitStatus = emitFilesAndReportErrorsAndGetExitStatus; + ts.noopFileWatcher = { close: ts.noop }; + function createWatchHost(system, reportWatchStatus) { + if (system === void 0) { system = ts.sys; } + var onWatchStatusChange = reportWatchStatus || createWatchStatusReporter(system); + return { + onWatchStatusChange: onWatchStatusChange, + watchFile: ts.maybeBind(system, system.watchFile) || (function () { return ts.noopFileWatcher; }), + watchDirectory: ts.maybeBind(system, system.watchDirectory) || (function () { return ts.noopFileWatcher; }), + setTimeout: ts.maybeBind(system, system.setTimeout) || ts.noop, + clearTimeout: ts.maybeBind(system, system.clearTimeout) || ts.noop + }; + } + ts.createWatchHost = createWatchHost; + ts.WatchType = { + ConfigFile: "Config file", + SourceFile: "Source file", + MissingFile: "Missing file", + WildcardDirectory: "Wild card directory", + FailedLookupLocations: "Failed Lookup Locations", + TypeRoots: "Type roots" + }; + function createWatchFactory(host, options) { + var watchLogLevel = host.trace ? options.extendedDiagnostics ? ts.WatchLogLevel.Verbose : options.diagnostics ? ts.WatchLogLevel.TriggerOnly : ts.WatchLogLevel.None : ts.WatchLogLevel.None; + var writeLog = watchLogLevel !== ts.WatchLogLevel.None ? (function (s) { return host.trace(s); }) : ts.noop; + var result = ts.getWatchFactory(watchLogLevel, writeLog); + result.writeLog = writeLog; + return result; + } + ts.createWatchFactory = createWatchFactory; + function createCompilerHostFromProgramHost(host, getCompilerOptions, directoryStructureHost) { + if (directoryStructureHost === void 0) { directoryStructureHost = host; } + var useCaseSensitiveFileNames = host.useCaseSensitiveFileNames(); + var hostGetNewLine = ts.memoize(function () { return host.getNewLine(); }); + return { + getSourceFile: function (fileName, languageVersion, onError) { + var text; + try { + ts.performance.mark("beforeIORead"); + text = host.readFile(fileName, getCompilerOptions().charset); + ts.performance.mark("afterIORead"); + ts.performance.measure("I/O Read", "beforeIORead", "afterIORead"); + } + catch (e) { + if (onError) { + onError(e.message); + } + text = ""; + } + return text !== undefined ? ts.createSourceFile(fileName, text, languageVersion) : undefined; + }, + getDefaultLibLocation: ts.maybeBind(host, host.getDefaultLibLocation), + getDefaultLibFileName: function (options) { return host.getDefaultLibFileName(options); }, + writeFile: writeFile, + getCurrentDirectory: ts.memoize(function () { return host.getCurrentDirectory(); }), + useCaseSensitiveFileNames: function () { return useCaseSensitiveFileNames; }, + getCanonicalFileName: ts.createGetCanonicalFileName(useCaseSensitiveFileNames), + getNewLine: function () { return ts.getNewLineCharacter(getCompilerOptions(), hostGetNewLine); }, + fileExists: function (f) { return host.fileExists(f); }, + readFile: function (f) { return host.readFile(f); }, + trace: ts.maybeBind(host, host.trace), + directoryExists: ts.maybeBind(directoryStructureHost, directoryStructureHost.directoryExists), + getDirectories: ts.maybeBind(directoryStructureHost, directoryStructureHost.getDirectories), + realpath: ts.maybeBind(host, host.realpath), + getEnvironmentVariable: ts.maybeBind(host, host.getEnvironmentVariable) || (function () { return ""; }), + createHash: ts.maybeBind(host, host.createHash), + readDirectory: ts.maybeBind(host, host.readDirectory), + }; + function writeFile(fileName, text, writeByteOrderMark, onError) { + try { + ts.performance.mark("beforeIOWrite"); + // NOTE: If patchWriteFileEnsuringDirectory has been called, + // the host.writeFile will do its own directory creation and + // the ensureDirectoriesExist call will always be redundant. + ts.writeFileEnsuringDirectories(fileName, text, writeByteOrderMark, function (path, data, writeByteOrderMark) { return host.writeFile(path, data, writeByteOrderMark); }, function (path) { return host.createDirectory(path); }, function (path) { return host.directoryExists(path); }); + ts.performance.mark("afterIOWrite"); + ts.performance.measure("I/O Write", "beforeIOWrite", "afterIOWrite"); + } + catch (e) { + if (onError) { + onError(e.message); + } + } + } + } + ts.createCompilerHostFromProgramHost = createCompilerHostFromProgramHost; + function setGetSourceFileAsHashVersioned(compilerHost, host) { + var originalGetSourceFile = compilerHost.getSourceFile; + var computeHash = host.createHash || ts.generateDjb2Hash; + compilerHost.getSourceFile = function () { + var args = []; + for (var _i = 0; _i < arguments.length; _i++) { + args[_i] = arguments[_i]; + } + var result = originalGetSourceFile.call.apply(originalGetSourceFile, __spreadArrays([compilerHost], args)); + if (result) { + result.version = computeHash.call(host, result.text); + } + return result; + }; + } + ts.setGetSourceFileAsHashVersioned = setGetSourceFileAsHashVersioned; + /** + * Creates the watch compiler host that can be extended with config file or root file names and options host + */ + function createProgramHost(system, createProgram) { + var getDefaultLibLocation = ts.memoize(function () { return ts.getDirectoryPath(ts.normalizePath(system.getExecutingFilePath())); }); + return { + useCaseSensitiveFileNames: function () { return system.useCaseSensitiveFileNames; }, + getNewLine: function () { return system.newLine; }, + getCurrentDirectory: ts.memoize(function () { return system.getCurrentDirectory(); }), + getDefaultLibLocation: getDefaultLibLocation, + getDefaultLibFileName: function (options) { return ts.combinePaths(getDefaultLibLocation(), ts.getDefaultLibFileName(options)); }, + fileExists: function (path) { return system.fileExists(path); }, + readFile: function (path, encoding) { return system.readFile(path, encoding); }, + directoryExists: function (path) { return system.directoryExists(path); }, + getDirectories: function (path) { return system.getDirectories(path); }, + readDirectory: function (path, extensions, exclude, include, depth) { return system.readDirectory(path, extensions, exclude, include, depth); }, + realpath: ts.maybeBind(system, system.realpath), + getEnvironmentVariable: ts.maybeBind(system, system.getEnvironmentVariable), + trace: function (s) { return system.write(s + system.newLine); }, + createDirectory: function (path) { return system.createDirectory(path); }, + writeFile: function (path, data, writeByteOrderMark) { return system.writeFile(path, data, writeByteOrderMark); }, + createHash: ts.maybeBind(system, system.createHash), + createProgram: createProgram || ts.createEmitAndSemanticDiagnosticsBuilderProgram + }; + } + ts.createProgramHost = createProgramHost; + /** + * Creates the watch compiler host that can be extended with config file or root file names and options host + */ + function createWatchCompilerHost(system, createProgram, reportDiagnostic, reportWatchStatus) { + if (system === void 0) { system = ts.sys; } + var writeFileName = function (s) { return system.write(s + system.newLine); }; + var result = createProgramHost(system, createProgram); + ts.copyProperties(result, createWatchHost(system, reportWatchStatus)); + result.afterProgramCreate = function (builderProgram) { + var compilerOptions = builderProgram.getCompilerOptions(); + var newLine = ts.getNewLineCharacter(compilerOptions, function () { return system.newLine; }); + emitFilesAndReportErrors(builderProgram, reportDiagnostic, writeFileName, function (errorCount) { return result.onWatchStatusChange(ts.createCompilerDiagnostic(getWatchErrorSummaryDiagnosticMessage(errorCount), errorCount), newLine, compilerOptions, errorCount); }); + }; + return result; + } + /** + * Report error and exit + */ + function reportUnrecoverableDiagnostic(system, reportDiagnostic, diagnostic) { + reportDiagnostic(diagnostic); + system.exit(ts.ExitStatus.DiagnosticsPresent_OutputsSkipped); + } + /** + * Creates the watch compiler host from system for config file in watch mode + */ + function createWatchCompilerHostOfConfigFile(_a) { + var configFileName = _a.configFileName, optionsToExtend = _a.optionsToExtend, watchOptionsToExtend = _a.watchOptionsToExtend, extraFileExtensions = _a.extraFileExtensions, system = _a.system, createProgram = _a.createProgram, reportDiagnostic = _a.reportDiagnostic, reportWatchStatus = _a.reportWatchStatus; + var diagnosticReporter = reportDiagnostic || createDiagnosticReporter(system); + var host = createWatchCompilerHost(system, createProgram, diagnosticReporter, reportWatchStatus); + host.onUnRecoverableConfigFileDiagnostic = function (diagnostic) { return reportUnrecoverableDiagnostic(system, diagnosticReporter, diagnostic); }; + host.configFileName = configFileName; + host.optionsToExtend = optionsToExtend; + host.watchOptionsToExtend = watchOptionsToExtend; + host.extraFileExtensions = extraFileExtensions; + return host; + } + ts.createWatchCompilerHostOfConfigFile = createWatchCompilerHostOfConfigFile; + /** + * Creates the watch compiler host from system for compiling root files and options in watch mode + */ + function createWatchCompilerHostOfFilesAndCompilerOptions(_a) { + var rootFiles = _a.rootFiles, options = _a.options, watchOptions = _a.watchOptions, projectReferences = _a.projectReferences, system = _a.system, createProgram = _a.createProgram, reportDiagnostic = _a.reportDiagnostic, reportWatchStatus = _a.reportWatchStatus; + var host = createWatchCompilerHost(system, createProgram, reportDiagnostic || createDiagnosticReporter(system), reportWatchStatus); + host.rootFiles = rootFiles; + host.options = options; + host.watchOptions = watchOptions; + host.projectReferences = projectReferences; + return host; + } + ts.createWatchCompilerHostOfFilesAndCompilerOptions = createWatchCompilerHostOfFilesAndCompilerOptions; + function performIncrementalCompilation(input) { + var system = input.system || ts.sys; + var host = input.host || (input.host = ts.createIncrementalCompilerHost(input.options, system)); + var builderProgram = ts.createIncrementalProgram(input); + var exitStatus = emitFilesAndReportErrorsAndGetExitStatus(builderProgram, input.reportDiagnostic || createDiagnosticReporter(system), function (s) { return host.trace && host.trace(s); }, input.reportErrorSummary || input.options.pretty ? function (errorCount) { return system.write(getErrorSummaryText(errorCount, system.newLine)); } : undefined); + if (input.afterProgramEmitAndDiagnostics) + input.afterProgramEmitAndDiagnostics(builderProgram); + return exitStatus; + } + ts.performIncrementalCompilation = performIncrementalCompilation; +})(ts || (ts = {})); +var ts; +(function (ts) { + function readBuilderProgram(compilerOptions, host) { + if (compilerOptions.out || compilerOptions.outFile) + return undefined; + var buildInfoPath = ts.getTsBuildInfoEmitOutputFilePath(compilerOptions); + if (!buildInfoPath) + return undefined; + var content = host.readFile(buildInfoPath); + if (!content) + return undefined; + var buildInfo = ts.getBuildInfo(content); + if (buildInfo.version !== ts.version) + return undefined; + if (!buildInfo.program) + return undefined; + return ts.createBuildProgramUsingProgramBuildInfo(buildInfo.program, buildInfoPath, host); + } + ts.readBuilderProgram = readBuilderProgram; + function createIncrementalCompilerHost(options, system) { + if (system === void 0) { system = ts.sys; } + var host = ts.createCompilerHostWorker(options, /*setParentNodes*/ undefined, system); + host.createHash = ts.maybeBind(system, system.createHash); + ts.setGetSourceFileAsHashVersioned(host, system); + ts.changeCompilerHostLikeToUseCache(host, function (fileName) { return ts.toPath(fileName, host.getCurrentDirectory(), host.getCanonicalFileName); }); + return host; + } + ts.createIncrementalCompilerHost = createIncrementalCompilerHost; + function createIncrementalProgram(_a) { + var rootNames = _a.rootNames, options = _a.options, configFileParsingDiagnostics = _a.configFileParsingDiagnostics, projectReferences = _a.projectReferences, host = _a.host, createProgram = _a.createProgram; + host = host || createIncrementalCompilerHost(options); + createProgram = createProgram || ts.createEmitAndSemanticDiagnosticsBuilderProgram; + var oldProgram = readBuilderProgram(options, host); + return createProgram(rootNames, options, host, oldProgram, configFileParsingDiagnostics, projectReferences); + } + ts.createIncrementalProgram = createIncrementalProgram; + function createWatchCompilerHost(rootFilesOrConfigFileName, options, system, createProgram, reportDiagnostic, reportWatchStatus, projectReferencesOrWatchOptionsToExtend, watchOptionsOrExtraFileExtensions) { + if (ts.isArray(rootFilesOrConfigFileName)) { + return ts.createWatchCompilerHostOfFilesAndCompilerOptions({ + rootFiles: rootFilesOrConfigFileName, + options: options, + watchOptions: watchOptionsOrExtraFileExtensions, + projectReferences: projectReferencesOrWatchOptionsToExtend, + system: system, + createProgram: createProgram, + reportDiagnostic: reportDiagnostic, + reportWatchStatus: reportWatchStatus, + }); + } + else { + return ts.createWatchCompilerHostOfConfigFile({ + configFileName: rootFilesOrConfigFileName, + optionsToExtend: options, + watchOptionsToExtend: projectReferencesOrWatchOptionsToExtend, + extraFileExtensions: watchOptionsOrExtraFileExtensions, + system: system, + createProgram: createProgram, + reportDiagnostic: reportDiagnostic, + reportWatchStatus: reportWatchStatus, + }); + } + } + ts.createWatchCompilerHost = createWatchCompilerHost; + function createWatchProgram(host) { + var builderProgram; + var reloadLevel; // level to indicate if the program needs to be reloaded from config file/just filenames etc + var missingFilesMap; // Map of file watchers for the missing files + var watchedWildcardDirectories; // map of watchers for the wild card directories in the config file + var timerToUpdateProgram; // timer callback to recompile the program + var sourceFilesCache = ts.createMap(); // Cache that stores the source file and version info + var missingFilePathsRequestedForRelease; // These paths are held temparirly so that we can remove the entry from source file cache if the file is not tracked by missing files + var hasChangedCompilerOptions = false; // True if the compiler options have changed between compilations + var hasChangedAutomaticTypeDirectiveNames = false; // True if the automatic type directives have changed + var useCaseSensitiveFileNames = host.useCaseSensitiveFileNames(); + var currentDirectory = host.getCurrentDirectory(); + var configFileName = host.configFileName, _a = host.optionsToExtend, optionsToExtendForConfigFile = _a === void 0 ? {} : _a, watchOptionsToExtend = host.watchOptionsToExtend, extraFileExtensions = host.extraFileExtensions, createProgram = host.createProgram; + var rootFileNames = host.rootFiles, compilerOptions = host.options, watchOptions = host.watchOptions, projectReferences = host.projectReferences; + var configFileSpecs; + var configFileParsingDiagnostics; + var canConfigFileJsonReportNoInputFiles = false; + var hasChangedConfigFileParsingErrors = false; + var cachedDirectoryStructureHost = configFileName === undefined ? undefined : ts.createCachedDirectoryStructureHost(host, currentDirectory, useCaseSensitiveFileNames); + var directoryStructureHost = cachedDirectoryStructureHost || host; + var parseConfigFileHost = ts.parseConfigHostFromCompilerHostLike(host, directoryStructureHost); + // From tsc we want to get already parsed result and hence check for rootFileNames + var newLine = updateNewLine(); + if (configFileName && host.configFileParsingResult) { + setConfigFileParsingResult(host.configFileParsingResult); + newLine = updateNewLine(); + } + reportWatchDiagnostic(ts.Diagnostics.Starting_compilation_in_watch_mode); + if (configFileName && !host.configFileParsingResult) { + newLine = ts.getNewLineCharacter(optionsToExtendForConfigFile, function () { return host.getNewLine(); }); + ts.Debug.assert(!rootFileNames); + parseConfigFile(); + newLine = updateNewLine(); + } + var _b = ts.createWatchFactory(host, compilerOptions), watchFile = _b.watchFile, watchFilePath = _b.watchFilePath, watchDirectory = _b.watchDirectory, writeLog = _b.writeLog; + var getCanonicalFileName = ts.createGetCanonicalFileName(useCaseSensitiveFileNames); + writeLog("Current directory: " + currentDirectory + " CaseSensitiveFileNames: " + useCaseSensitiveFileNames); + var configFileWatcher; + if (configFileName) { + configFileWatcher = watchFile(host, configFileName, scheduleProgramReload, ts.PollingInterval.High, watchOptions, ts.WatchType.ConfigFile); + } + var compilerHost = ts.createCompilerHostFromProgramHost(host, function () { return compilerOptions; }, directoryStructureHost); + ts.setGetSourceFileAsHashVersioned(compilerHost, host); + // Members for CompilerHost + var getNewSourceFile = compilerHost.getSourceFile; + compilerHost.getSourceFile = function (fileName) { + var args = []; + for (var _i = 1; _i < arguments.length; _i++) { + args[_i - 1] = arguments[_i]; + } + return getVersionedSourceFileByPath.apply(void 0, __spreadArrays([fileName, toPath(fileName)], args)); + }; + compilerHost.getSourceFileByPath = getVersionedSourceFileByPath; + compilerHost.getNewLine = function () { return newLine; }; + compilerHost.fileExists = fileExists; + compilerHost.onReleaseOldSourceFile = onReleaseOldSourceFile; + // Members for ResolutionCacheHost + compilerHost.toPath = toPath; + compilerHost.getCompilationSettings = function () { return compilerOptions; }; + compilerHost.useSourceOfProjectReferenceRedirect = ts.maybeBind(host, host.useSourceOfProjectReferenceRedirect); + compilerHost.watchDirectoryOfFailedLookupLocation = function (dir, cb, flags) { return watchDirectory(host, dir, cb, flags, watchOptions, ts.WatchType.FailedLookupLocations); }; + compilerHost.watchTypeRootsDirectory = function (dir, cb, flags) { return watchDirectory(host, dir, cb, flags, watchOptions, ts.WatchType.TypeRoots); }; + compilerHost.getCachedDirectoryStructureHost = function () { return cachedDirectoryStructureHost; }; + compilerHost.onInvalidatedResolution = scheduleProgramUpdate; + compilerHost.onChangedAutomaticTypeDirectiveNames = function () { + hasChangedAutomaticTypeDirectiveNames = true; + scheduleProgramUpdate(); + }; + compilerHost.fileIsOpen = ts.returnFalse; + compilerHost.getCurrentProgram = getCurrentProgram; + compilerHost.writeLog = writeLog; + // Cache for the module resolution + var resolutionCache = ts.createResolutionCache(compilerHost, configFileName ? + ts.getDirectoryPath(ts.getNormalizedAbsolutePath(configFileName, currentDirectory)) : + currentDirectory, + /*logChangesWhenResolvingModule*/ false); + // Resolve module using host module resolution strategy if provided otherwise use resolution cache to resolve module names + compilerHost.resolveModuleNames = host.resolveModuleNames ? + (function () { + var args = []; + for (var _i = 0; _i < arguments.length; _i++) { + args[_i] = arguments[_i]; + } + return host.resolveModuleNames.apply(host, args); + }) : + (function (moduleNames, containingFile, reusedNames, redirectedReference) { return resolutionCache.resolveModuleNames(moduleNames, containingFile, reusedNames, redirectedReference); }); + compilerHost.resolveTypeReferenceDirectives = host.resolveTypeReferenceDirectives ? + (function () { + var args = []; + for (var _i = 0; _i < arguments.length; _i++) { + args[_i] = arguments[_i]; + } + return host.resolveTypeReferenceDirectives.apply(host, args); + }) : + (function (typeDirectiveNames, containingFile, redirectedReference) { return resolutionCache.resolveTypeReferenceDirectives(typeDirectiveNames, containingFile, redirectedReference); }); + var userProvidedResolution = !!host.resolveModuleNames || !!host.resolveTypeReferenceDirectives; + builderProgram = readBuilderProgram(compilerOptions, compilerHost); + synchronizeProgram(); + // Update the wild card directory watch + watchConfigFileWildCardDirectories(); + return configFileName ? + { getCurrentProgram: getCurrentBuilderProgram, getProgram: updateProgram, close: close } : + { getCurrentProgram: getCurrentBuilderProgram, getProgram: updateProgram, updateRootFileNames: updateRootFileNames, close: close }; + function close() { + resolutionCache.clear(); + ts.clearMap(sourceFilesCache, function (value) { + if (value && value.fileWatcher) { + value.fileWatcher.close(); + value.fileWatcher = undefined; + } + }); + if (configFileWatcher) { + configFileWatcher.close(); + configFileWatcher = undefined; + } + if (watchedWildcardDirectories) { + ts.clearMap(watchedWildcardDirectories, ts.closeFileWatcherOf); + watchedWildcardDirectories = undefined; + } + if (missingFilesMap) { + ts.clearMap(missingFilesMap, ts.closeFileWatcher); + missingFilesMap = undefined; + } + } + function getCurrentBuilderProgram() { + return builderProgram; + } + function getCurrentProgram() { + return builderProgram && builderProgram.getProgramOrUndefined(); + } + function synchronizeProgram() { + writeLog("Synchronizing program"); + var program = getCurrentBuilderProgram(); + if (hasChangedCompilerOptions) { + newLine = updateNewLine(); + if (program && ts.changesAffectModuleResolution(program.getCompilerOptions(), compilerOptions)) { + resolutionCache.clear(); + } + } + // All resolutions are invalid if user provided resolutions + var hasInvalidatedResolution = resolutionCache.createHasInvalidatedResolution(userProvidedResolution); + if (ts.isProgramUptoDate(getCurrentProgram(), rootFileNames, compilerOptions, getSourceVersion, fileExists, hasInvalidatedResolution, hasChangedAutomaticTypeDirectiveNames, projectReferences)) { + if (hasChangedConfigFileParsingErrors) { + builderProgram = createProgram(/*rootNames*/ undefined, /*options*/ undefined, compilerHost, builderProgram, configFileParsingDiagnostics, projectReferences); + hasChangedConfigFileParsingErrors = false; + } + } + else { + createNewProgram(hasInvalidatedResolution); + } + if (host.afterProgramCreate && program !== builderProgram) { + host.afterProgramCreate(builderProgram); + } + return builderProgram; + } + function createNewProgram(hasInvalidatedResolution) { + // Compile the program + writeLog("CreatingProgramWith::"); + writeLog(" roots: " + JSON.stringify(rootFileNames)); + writeLog(" options: " + JSON.stringify(compilerOptions)); + var needsUpdateInTypeRootWatch = hasChangedCompilerOptions || !getCurrentProgram(); + hasChangedCompilerOptions = false; + hasChangedConfigFileParsingErrors = false; + resolutionCache.startCachingPerDirectoryResolution(); + compilerHost.hasInvalidatedResolution = hasInvalidatedResolution; + compilerHost.hasChangedAutomaticTypeDirectiveNames = hasChangedAutomaticTypeDirectiveNames; + hasChangedAutomaticTypeDirectiveNames = false; + builderProgram = createProgram(rootFileNames, compilerOptions, compilerHost, builderProgram, configFileParsingDiagnostics, projectReferences); + resolutionCache.finishCachingPerDirectoryResolution(); + // Update watches + ts.updateMissingFilePathsWatch(builderProgram.getProgram(), missingFilesMap || (missingFilesMap = ts.createMap()), watchMissingFilePath); + if (needsUpdateInTypeRootWatch) { + resolutionCache.updateTypeRootsWatch(); + } + if (missingFilePathsRequestedForRelease) { + // These are the paths that program creater told us as not in use any more but were missing on the disk. + // We didnt remove the entry for them from sourceFiles cache so that we dont have to do File IO, + // if there is already watcher for it (for missing files) + // At this point our watches were updated, hence now we know that these paths are not tracked and need to be removed + // so that at later time we have correct result of their presence + for (var _i = 0, missingFilePathsRequestedForRelease_1 = missingFilePathsRequestedForRelease; _i < missingFilePathsRequestedForRelease_1.length; _i++) { + var missingFilePath = missingFilePathsRequestedForRelease_1[_i]; + if (!missingFilesMap.has(missingFilePath)) { + sourceFilesCache.delete(missingFilePath); + } + } + missingFilePathsRequestedForRelease = undefined; + } + } + function updateRootFileNames(files) { + ts.Debug.assert(!configFileName, "Cannot update root file names with config file watch mode"); + rootFileNames = files; + scheduleProgramUpdate(); + } + function updateNewLine() { + return ts.getNewLineCharacter(compilerOptions || optionsToExtendForConfigFile, function () { return host.getNewLine(); }); + } + function toPath(fileName) { + return ts.toPath(fileName, currentDirectory, getCanonicalFileName); + } + function isFileMissingOnHost(hostSourceFile) { + return typeof hostSourceFile === "boolean"; + } + function isFilePresenceUnknownOnHost(hostSourceFile) { + return typeof hostSourceFile.version === "boolean"; + } + function fileExists(fileName) { + var path = toPath(fileName); + // If file is missing on host from cache, we can definitely say file doesnt exist + // otherwise we need to ensure from the disk + if (isFileMissingOnHost(sourceFilesCache.get(path))) { + return false; + } + return directoryStructureHost.fileExists(fileName); + } + function getVersionedSourceFileByPath(fileName, path, languageVersion, onError, shouldCreateNewSourceFile) { + var hostSourceFile = sourceFilesCache.get(path); + // No source file on the host + if (isFileMissingOnHost(hostSourceFile)) { + return undefined; + } + // Create new source file if requested or the versions dont match + if (hostSourceFile === undefined || shouldCreateNewSourceFile || isFilePresenceUnknownOnHost(hostSourceFile)) { + var sourceFile = getNewSourceFile(fileName, languageVersion, onError); + if (hostSourceFile) { + if (sourceFile) { + // Set the source file and create file watcher now that file was present on the disk + hostSourceFile.sourceFile = sourceFile; + hostSourceFile.version = sourceFile.version; + if (!hostSourceFile.fileWatcher) { + hostSourceFile.fileWatcher = watchFilePath(host, fileName, onSourceFileChange, ts.PollingInterval.Low, watchOptions, path, ts.WatchType.SourceFile); + } + } + else { + // There is no source file on host any more, close the watch, missing file paths will track it + if (hostSourceFile.fileWatcher) { + hostSourceFile.fileWatcher.close(); + } + sourceFilesCache.set(path, false); + } + } + else { + if (sourceFile) { + var fileWatcher = watchFilePath(host, fileName, onSourceFileChange, ts.PollingInterval.Low, watchOptions, path, ts.WatchType.SourceFile); + sourceFilesCache.set(path, { sourceFile: sourceFile, version: sourceFile.version, fileWatcher: fileWatcher }); + } + else { + sourceFilesCache.set(path, false); + } + } + return sourceFile; + } + return hostSourceFile.sourceFile; + } + function nextSourceFileVersion(path) { + var hostSourceFile = sourceFilesCache.get(path); + if (hostSourceFile !== undefined) { + if (isFileMissingOnHost(hostSourceFile)) { + // The next version, lets set it as presence unknown file + sourceFilesCache.set(path, { version: false }); + } + else { + hostSourceFile.version = false; + } + } + } + function getSourceVersion(path) { + var hostSourceFile = sourceFilesCache.get(path); + return !hostSourceFile || !hostSourceFile.version ? undefined : hostSourceFile.version; + } + function onReleaseOldSourceFile(oldSourceFile, _oldOptions, hasSourceFileByPath) { + var hostSourceFileInfo = sourceFilesCache.get(oldSourceFile.resolvedPath); + // If this is the source file thats in the cache and new program doesnt need it, + // remove the cached entry. + // Note we arent deleting entry if file became missing in new program or + // there was version update and new source file was created. + if (hostSourceFileInfo !== undefined) { + // record the missing file paths so they can be removed later if watchers arent tracking them + if (isFileMissingOnHost(hostSourceFileInfo)) { + (missingFilePathsRequestedForRelease || (missingFilePathsRequestedForRelease = [])).push(oldSourceFile.path); + } + else if (hostSourceFileInfo.sourceFile === oldSourceFile) { + if (hostSourceFileInfo.fileWatcher) { + hostSourceFileInfo.fileWatcher.close(); + } + sourceFilesCache.delete(oldSourceFile.resolvedPath); + if (!hasSourceFileByPath) { + resolutionCache.removeResolutionsOfFile(oldSourceFile.path); + } + } + } + } + function reportWatchDiagnostic(message) { + if (host.onWatchStatusChange) { + host.onWatchStatusChange(ts.createCompilerDiagnostic(message), newLine, compilerOptions || optionsToExtendForConfigFile); + } + } + // Upon detecting a file change, wait for 250ms and then perform a recompilation. This gives batch + // operations (such as saving all modified files in an editor) a chance to complete before we kick + // off a new compilation. + function scheduleProgramUpdate() { + if (!host.setTimeout || !host.clearTimeout) { + return; + } + if (timerToUpdateProgram) { + host.clearTimeout(timerToUpdateProgram); + } + writeLog("Scheduling update"); + timerToUpdateProgram = host.setTimeout(updateProgramWithWatchStatus, 250); + } + function scheduleProgramReload() { + ts.Debug.assert(!!configFileName); + reloadLevel = ts.ConfigFileProgramReloadLevel.Full; + scheduleProgramUpdate(); + } + function updateProgramWithWatchStatus() { + timerToUpdateProgram = undefined; + reportWatchDiagnostic(ts.Diagnostics.File_change_detected_Starting_incremental_compilation); + updateProgram(); + } + function updateProgram() { + switch (reloadLevel) { + case ts.ConfigFileProgramReloadLevel.Partial: + ts.perfLogger.logStartUpdateProgram("PartialConfigReload"); + reloadFileNamesFromConfigFile(); + break; + case ts.ConfigFileProgramReloadLevel.Full: + ts.perfLogger.logStartUpdateProgram("FullConfigReload"); + reloadConfigFile(); + break; + default: + ts.perfLogger.logStartUpdateProgram("SynchronizeProgram"); + synchronizeProgram(); + break; + } + ts.perfLogger.logStopUpdateProgram("Done"); + return getCurrentBuilderProgram(); + } + function reloadFileNamesFromConfigFile() { + writeLog("Reloading new file names and options"); + var result = ts.getFileNamesFromConfigSpecs(configFileSpecs, ts.getNormalizedAbsolutePath(ts.getDirectoryPath(configFileName), currentDirectory), compilerOptions, parseConfigFileHost); + if (ts.updateErrorForNoInputFiles(result, ts.getNormalizedAbsolutePath(configFileName, currentDirectory), configFileSpecs, configFileParsingDiagnostics, canConfigFileJsonReportNoInputFiles)) { + hasChangedConfigFileParsingErrors = true; + } + rootFileNames = result.fileNames; + // Update the program + synchronizeProgram(); + } + function reloadConfigFile() { + writeLog("Reloading config file: " + configFileName); + reloadLevel = ts.ConfigFileProgramReloadLevel.None; + if (cachedDirectoryStructureHost) { + cachedDirectoryStructureHost.clearCache(); + } + parseConfigFile(); + hasChangedCompilerOptions = true; + synchronizeProgram(); + // Update the wild card directory watch + watchConfigFileWildCardDirectories(); + } + function parseConfigFile() { + setConfigFileParsingResult(ts.getParsedCommandLineOfConfigFile(configFileName, optionsToExtendForConfigFile, parseConfigFileHost, /*extendedConfigCache*/ undefined, watchOptionsToExtend, extraFileExtensions)); // TODO: GH#18217 + } + function setConfigFileParsingResult(configFileParseResult) { + rootFileNames = configFileParseResult.fileNames; + compilerOptions = configFileParseResult.options; + watchOptions = configFileParseResult.watchOptions; + configFileSpecs = configFileParseResult.configFileSpecs; // TODO: GH#18217 + projectReferences = configFileParseResult.projectReferences; + configFileParsingDiagnostics = ts.getConfigFileParsingDiagnostics(configFileParseResult).slice(); + canConfigFileJsonReportNoInputFiles = ts.canJsonReportNoInutFiles(configFileParseResult.raw); + hasChangedConfigFileParsingErrors = true; + } + function onSourceFileChange(fileName, eventKind, path) { + updateCachedSystemWithFile(fileName, path, eventKind); + // Update the source file cache + if (eventKind === ts.FileWatcherEventKind.Deleted && sourceFilesCache.has(path)) { + resolutionCache.invalidateResolutionOfFile(path); + } + resolutionCache.removeResolutionsFromProjectReferenceRedirects(path); + nextSourceFileVersion(path); + // Update the program + scheduleProgramUpdate(); + } + function updateCachedSystemWithFile(fileName, path, eventKind) { + if (cachedDirectoryStructureHost) { + cachedDirectoryStructureHost.addOrDeleteFile(fileName, path, eventKind); + } + } + function watchMissingFilePath(missingFilePath) { + return watchFilePath(host, missingFilePath, onMissingFileChange, ts.PollingInterval.Medium, watchOptions, missingFilePath, ts.WatchType.MissingFile); + } + function onMissingFileChange(fileName, eventKind, missingFilePath) { + updateCachedSystemWithFile(fileName, missingFilePath, eventKind); + if (eventKind === ts.FileWatcherEventKind.Created && missingFilesMap.has(missingFilePath)) { + missingFilesMap.get(missingFilePath).close(); + missingFilesMap.delete(missingFilePath); + // Delete the entry in the source files cache so that new source file is created + nextSourceFileVersion(missingFilePath); + // When a missing file is created, we should update the graph. + scheduleProgramUpdate(); + } + } + function watchConfigFileWildCardDirectories() { + if (configFileSpecs) { + ts.updateWatchingWildcardDirectories(watchedWildcardDirectories || (watchedWildcardDirectories = ts.createMap()), ts.createMapFromTemplate(configFileSpecs.wildcardDirectories), watchWildcardDirectory); + } + else if (watchedWildcardDirectories) { + ts.clearMap(watchedWildcardDirectories, ts.closeFileWatcherOf); + } + } + function watchWildcardDirectory(directory, flags) { + return watchDirectory(host, directory, function (fileOrDirectory) { + ts.Debug.assert(!!configFileName); + var fileOrDirectoryPath = toPath(fileOrDirectory); + // Since the file existence changed, update the sourceFiles cache + if (cachedDirectoryStructureHost) { + cachedDirectoryStructureHost.addOrDeleteFileOrDirectory(fileOrDirectory, fileOrDirectoryPath); + } + nextSourceFileVersion(fileOrDirectoryPath); + fileOrDirectoryPath = ts.removeIgnoredPath(fileOrDirectoryPath); + if (!fileOrDirectoryPath) + return; + // If the the added or created file or directory is not supported file name, ignore the file + // But when watched directory is added/removed, we need to reload the file list + if (fileOrDirectoryPath !== directory && ts.hasExtension(fileOrDirectoryPath) && !ts.isSupportedSourceFileName(fileOrDirectory, compilerOptions)) { + writeLog("Project: " + configFileName + " Detected file add/remove of non supported extension: " + fileOrDirectory); + return; + } + // Reload is pending, do the reload + if (reloadLevel !== ts.ConfigFileProgramReloadLevel.Full) { + reloadLevel = ts.ConfigFileProgramReloadLevel.Partial; + // Schedule Update the program + scheduleProgramUpdate(); + } + }, flags, watchOptions, ts.WatchType.WildcardDirectory); + } + } + ts.createWatchProgram = createWatchProgram; +})(ts || (ts = {})); +/*@internal*/ +var ts; +(function (ts) { + var UpToDateStatusType; + (function (UpToDateStatusType) { + UpToDateStatusType[UpToDateStatusType["Unbuildable"] = 0] = "Unbuildable"; + UpToDateStatusType[UpToDateStatusType["UpToDate"] = 1] = "UpToDate"; + /** + * The project appears out of date because its upstream inputs are newer than its outputs, + * but all of its outputs are actually newer than the previous identical outputs of its (.d.ts) inputs. + * This means we can Pseudo-build (just touch timestamps), as if we had actually built this project. + */ + UpToDateStatusType[UpToDateStatusType["UpToDateWithUpstreamTypes"] = 2] = "UpToDateWithUpstreamTypes"; + /** + * The project appears out of date because its upstream inputs are newer than its outputs, + * but all of its outputs are actually newer than the previous identical outputs of its (.d.ts) inputs. + * This means we can Pseudo-build (just manipulate outputs), as if we had actually built this project. + */ + UpToDateStatusType[UpToDateStatusType["OutOfDateWithPrepend"] = 3] = "OutOfDateWithPrepend"; + UpToDateStatusType[UpToDateStatusType["OutputMissing"] = 4] = "OutputMissing"; + UpToDateStatusType[UpToDateStatusType["OutOfDateWithSelf"] = 5] = "OutOfDateWithSelf"; + UpToDateStatusType[UpToDateStatusType["OutOfDateWithUpstream"] = 6] = "OutOfDateWithUpstream"; + UpToDateStatusType[UpToDateStatusType["UpstreamOutOfDate"] = 7] = "UpstreamOutOfDate"; + UpToDateStatusType[UpToDateStatusType["UpstreamBlocked"] = 8] = "UpstreamBlocked"; + UpToDateStatusType[UpToDateStatusType["ComputingUpstream"] = 9] = "ComputingUpstream"; + UpToDateStatusType[UpToDateStatusType["TsVersionOutputOfDate"] = 10] = "TsVersionOutputOfDate"; + /** + * Projects with no outputs (i.e. "solution" files) + */ + UpToDateStatusType[UpToDateStatusType["ContainerOnly"] = 11] = "ContainerOnly"; + })(UpToDateStatusType = ts.UpToDateStatusType || (ts.UpToDateStatusType = {})); + function resolveConfigFileProjectName(project) { + if (ts.fileExtensionIs(project, ".json" /* Json */)) { + return project; + } + return ts.combinePaths(project, "tsconfig.json"); + } + ts.resolveConfigFileProjectName = resolveConfigFileProjectName; +})(ts || (ts = {})); +var ts; +(function (ts) { + var minimumDate = new Date(-8640000000000000); + var maximumDate = new Date(8640000000000000); + var BuildResultFlags; + (function (BuildResultFlags) { + BuildResultFlags[BuildResultFlags["None"] = 0] = "None"; + /** + * No errors of any kind occurred during build + */ + BuildResultFlags[BuildResultFlags["Success"] = 1] = "Success"; + /** + * None of the .d.ts files emitted by this build were + * different from the existing files on disk + */ + BuildResultFlags[BuildResultFlags["DeclarationOutputUnchanged"] = 2] = "DeclarationOutputUnchanged"; + BuildResultFlags[BuildResultFlags["ConfigFileErrors"] = 4] = "ConfigFileErrors"; + BuildResultFlags[BuildResultFlags["SyntaxErrors"] = 8] = "SyntaxErrors"; + BuildResultFlags[BuildResultFlags["TypeErrors"] = 16] = "TypeErrors"; + BuildResultFlags[BuildResultFlags["DeclarationEmitErrors"] = 32] = "DeclarationEmitErrors"; + BuildResultFlags[BuildResultFlags["EmitErrors"] = 64] = "EmitErrors"; + BuildResultFlags[BuildResultFlags["AnyErrors"] = 124] = "AnyErrors"; + })(BuildResultFlags || (BuildResultFlags = {})); + function createConfigFileMap() { + return ts.createMap(); + } + function getOrCreateValueFromConfigFileMap(configFileMap, resolved, createT) { + var existingValue = configFileMap.get(resolved); + var newValue; + if (!existingValue) { + newValue = createT(); + configFileMap.set(resolved, newValue); + } + return existingValue || newValue; + } + function getOrCreateValueMapFromConfigFileMap(configFileMap, resolved) { + return getOrCreateValueFromConfigFileMap(configFileMap, resolved, ts.createMap); + } + function newer(date1, date2) { + return date2 > date1 ? date2 : date1; + } + function isDeclarationFile(fileName) { + return ts.fileExtensionIs(fileName, ".d.ts" /* Dts */); + } + /*@internal*/ + function isCircularBuildOrder(buildOrder) { + return !!buildOrder && !!buildOrder.buildOrder; + } + ts.isCircularBuildOrder = isCircularBuildOrder; + /*@internal*/ + function getBuildOrderFromAnyBuildOrder(anyBuildOrder) { + return isCircularBuildOrder(anyBuildOrder) ? anyBuildOrder.buildOrder : anyBuildOrder; + } + ts.getBuildOrderFromAnyBuildOrder = getBuildOrderFromAnyBuildOrder; + /** + * Create a function that reports watch status by writing to the system and handles the formating of the diagnostic + */ + function createBuilderStatusReporter(system, pretty) { + return function (diagnostic) { + var output = pretty ? "[" + ts.formatColorAndReset(ts.getLocaleTimeString(system), ts.ForegroundColorEscapeSequences.Grey) + "] " : ts.getLocaleTimeString(system) + " - "; + output += "" + ts.flattenDiagnosticMessageText(diagnostic.messageText, system.newLine) + (system.newLine + system.newLine); + system.write(output); + }; + } + ts.createBuilderStatusReporter = createBuilderStatusReporter; + function createSolutionBuilderHostBase(system, createProgram, reportDiagnostic, reportSolutionBuilderStatus) { + var host = ts.createProgramHost(system, createProgram); + host.getModifiedTime = system.getModifiedTime ? function (path) { return system.getModifiedTime(path); } : ts.returnUndefined; + host.setModifiedTime = system.setModifiedTime ? function (path, date) { return system.setModifiedTime(path, date); } : ts.noop; + host.deleteFile = system.deleteFile ? function (path) { return system.deleteFile(path); } : ts.noop; + host.reportDiagnostic = reportDiagnostic || ts.createDiagnosticReporter(system); + host.reportSolutionBuilderStatus = reportSolutionBuilderStatus || createBuilderStatusReporter(system); + host.now = ts.maybeBind(system, system.now); // For testing + return host; + } + function createSolutionBuilderHost(system, createProgram, reportDiagnostic, reportSolutionBuilderStatus, reportErrorSummary) { + if (system === void 0) { system = ts.sys; } + var host = createSolutionBuilderHostBase(system, createProgram, reportDiagnostic, reportSolutionBuilderStatus); + host.reportErrorSummary = reportErrorSummary; + return host; + } + ts.createSolutionBuilderHost = createSolutionBuilderHost; + function createSolutionBuilderWithWatchHost(system, createProgram, reportDiagnostic, reportSolutionBuilderStatus, reportWatchStatus) { + if (system === void 0) { system = ts.sys; } + var host = createSolutionBuilderHostBase(system, createProgram, reportDiagnostic, reportSolutionBuilderStatus); + var watchHost = ts.createWatchHost(system, reportWatchStatus); + ts.copyProperties(host, watchHost); + return host; + } + ts.createSolutionBuilderWithWatchHost = createSolutionBuilderWithWatchHost; + function getCompilerOptionsOfBuildOptions(buildOptions) { + var result = {}; + ts.commonOptionsWithBuild.forEach(function (option) { + if (ts.hasProperty(buildOptions, option.name)) + result[option.name] = buildOptions[option.name]; + }); + return result; + } + function createSolutionBuilder(host, rootNames, defaultOptions) { + return createSolutionBuilderWorker(/*watch*/ false, host, rootNames, defaultOptions); + } + ts.createSolutionBuilder = createSolutionBuilder; + function createSolutionBuilderWithWatch(host, rootNames, defaultOptions, baseWatchOptions) { + return createSolutionBuilderWorker(/*watch*/ true, host, rootNames, defaultOptions, baseWatchOptions); + } + ts.createSolutionBuilderWithWatch = createSolutionBuilderWithWatch; + function createSolutionBuilderState(watch, hostOrHostWithWatch, rootNames, options, baseWatchOptions) { + var host = hostOrHostWithWatch; + var hostWithWatch = hostOrHostWithWatch; + var currentDirectory = host.getCurrentDirectory(); + var getCanonicalFileName = ts.createGetCanonicalFileName(host.useCaseSensitiveFileNames()); + // State of the solution + var baseCompilerOptions = getCompilerOptionsOfBuildOptions(options); + var compilerHost = ts.createCompilerHostFromProgramHost(host, function () { return state.projectCompilerOptions; }); + ts.setGetSourceFileAsHashVersioned(compilerHost, host); + compilerHost.getParsedCommandLine = function (fileName) { return parseConfigFile(state, fileName, toResolvedConfigFilePath(state, fileName)); }; + compilerHost.resolveModuleNames = ts.maybeBind(host, host.resolveModuleNames); + compilerHost.resolveTypeReferenceDirectives = ts.maybeBind(host, host.resolveTypeReferenceDirectives); + var moduleResolutionCache = !compilerHost.resolveModuleNames ? ts.createModuleResolutionCache(currentDirectory, getCanonicalFileName) : undefined; + if (!compilerHost.resolveModuleNames) { + var loader_3 = function (moduleName, containingFile, redirectedReference) { return ts.resolveModuleName(moduleName, containingFile, state.projectCompilerOptions, compilerHost, moduleResolutionCache, redirectedReference).resolvedModule; }; + compilerHost.resolveModuleNames = function (moduleNames, containingFile, _reusedNames, redirectedReference) { + return ts.loadWithLocalCache(ts.Debug.checkEachDefined(moduleNames), containingFile, redirectedReference, loader_3); + }; + } + var _a = ts.createWatchFactory(hostWithWatch, options), watchFile = _a.watchFile, watchFilePath = _a.watchFilePath, watchDirectory = _a.watchDirectory, writeLog = _a.writeLog; + var state = { + host: host, + hostWithWatch: hostWithWatch, + currentDirectory: currentDirectory, + getCanonicalFileName: getCanonicalFileName, + parseConfigFileHost: ts.parseConfigHostFromCompilerHostLike(host), + writeFileName: host.trace ? function (s) { return host.trace(s); } : undefined, + // State of solution + options: options, + baseCompilerOptions: baseCompilerOptions, + rootNames: rootNames, + baseWatchOptions: baseWatchOptions, + resolvedConfigFilePaths: ts.createMap(), + configFileCache: createConfigFileMap(), + projectStatus: createConfigFileMap(), + buildInfoChecked: createConfigFileMap(), + extendedConfigCache: ts.createMap(), + builderPrograms: createConfigFileMap(), + diagnostics: createConfigFileMap(), + projectPendingBuild: createConfigFileMap(), + projectErrorsReported: createConfigFileMap(), + compilerHost: compilerHost, + moduleResolutionCache: moduleResolutionCache, + // Mutable state + buildOrder: undefined, + readFileWithCache: function (f) { return host.readFile(f); }, + projectCompilerOptions: baseCompilerOptions, + cache: undefined, + allProjectBuildPending: true, + needsSummary: true, + watchAllProjectsPending: watch, + currentInvalidatedProject: undefined, + // Watch state + watch: watch, + allWatchedWildcardDirectories: createConfigFileMap(), + allWatchedInputFiles: createConfigFileMap(), + allWatchedConfigFiles: createConfigFileMap(), + timerToBuildInvalidatedProject: undefined, + reportFileChangeDetected: false, + watchFile: watchFile, + watchFilePath: watchFilePath, + watchDirectory: watchDirectory, + writeLog: writeLog, + }; + return state; + } + function toPath(state, fileName) { + return ts.toPath(fileName, state.currentDirectory, state.getCanonicalFileName); + } + function toResolvedConfigFilePath(state, fileName) { + var resolvedConfigFilePaths = state.resolvedConfigFilePaths; + var path = resolvedConfigFilePaths.get(fileName); + if (path !== undefined) + return path; + var resolvedPath = toPath(state, fileName); + resolvedConfigFilePaths.set(fileName, resolvedPath); + return resolvedPath; + } + function isParsedCommandLine(entry) { + return !!entry.options; + } + function parseConfigFile(state, configFileName, configFilePath) { + var configFileCache = state.configFileCache; + var value = configFileCache.get(configFilePath); + if (value) { + return isParsedCommandLine(value) ? value : undefined; + } + var diagnostic; + var parseConfigFileHost = state.parseConfigFileHost, baseCompilerOptions = state.baseCompilerOptions, baseWatchOptions = state.baseWatchOptions, extendedConfigCache = state.extendedConfigCache, host = state.host; + var parsed; + if (host.getParsedCommandLine) { + parsed = host.getParsedCommandLine(configFileName); + if (!parsed) + diagnostic = ts.createCompilerDiagnostic(ts.Diagnostics.File_0_not_found, configFileName); + } + else { + parseConfigFileHost.onUnRecoverableConfigFileDiagnostic = function (d) { return diagnostic = d; }; + parsed = ts.getParsedCommandLineOfConfigFile(configFileName, baseCompilerOptions, parseConfigFileHost, extendedConfigCache, baseWatchOptions); + parseConfigFileHost.onUnRecoverableConfigFileDiagnostic = ts.noop; + } + configFileCache.set(configFilePath, parsed || diagnostic); + return parsed; + } + function resolveProjectName(state, name) { + return ts.resolveConfigFileProjectName(ts.resolvePath(state.currentDirectory, name)); + } + function createBuildOrder(state, roots) { + var temporaryMarks = ts.createMap(); + var permanentMarks = ts.createMap(); + var circularityReportStack = []; + var buildOrder; + var circularDiagnostics; + for (var _i = 0, roots_1 = roots; _i < roots_1.length; _i++) { + var root = roots_1[_i]; + visit(root); + } + return circularDiagnostics ? + { buildOrder: buildOrder || ts.emptyArray, circularDiagnostics: circularDiagnostics } : + buildOrder || ts.emptyArray; + function visit(configFileName, inCircularContext) { + var projPath = toResolvedConfigFilePath(state, configFileName); + // Already visited + if (permanentMarks.has(projPath)) + return; + // Circular + if (temporaryMarks.has(projPath)) { + if (!inCircularContext) { + (circularDiagnostics || (circularDiagnostics = [])).push(ts.createCompilerDiagnostic(ts.Diagnostics.Project_references_may_not_form_a_circular_graph_Cycle_detected_Colon_0, circularityReportStack.join("\r\n"))); + } + return; + } + temporaryMarks.set(projPath, true); + circularityReportStack.push(configFileName); + var parsed = parseConfigFile(state, configFileName, projPath); + if (parsed && parsed.projectReferences) { + for (var _i = 0, _a = parsed.projectReferences; _i < _a.length; _i++) { + var ref = _a[_i]; + var resolvedRefPath = resolveProjectName(state, ref.path); + visit(resolvedRefPath, inCircularContext || ref.circular); + } + } + circularityReportStack.pop(); + permanentMarks.set(projPath, true); + (buildOrder || (buildOrder = [])).push(configFileName); + } + } + function getBuildOrder(state) { + return state.buildOrder || createStateBuildOrder(state); + } + function createStateBuildOrder(state) { + var buildOrder = createBuildOrder(state, state.rootNames.map(function (f) { return resolveProjectName(state, f); })); + // Clear all to ResolvedConfigFilePaths cache to start fresh + state.resolvedConfigFilePaths.clear(); + var currentProjects = ts.arrayToSet(getBuildOrderFromAnyBuildOrder(buildOrder), function (resolved) { return toResolvedConfigFilePath(state, resolved); }); + var noopOnDelete = { onDeleteValue: ts.noop }; + // Config file cache + ts.mutateMapSkippingNewValues(state.configFileCache, currentProjects, noopOnDelete); + ts.mutateMapSkippingNewValues(state.projectStatus, currentProjects, noopOnDelete); + ts.mutateMapSkippingNewValues(state.buildInfoChecked, currentProjects, noopOnDelete); + ts.mutateMapSkippingNewValues(state.builderPrograms, currentProjects, noopOnDelete); + ts.mutateMapSkippingNewValues(state.diagnostics, currentProjects, noopOnDelete); + ts.mutateMapSkippingNewValues(state.projectPendingBuild, currentProjects, noopOnDelete); + ts.mutateMapSkippingNewValues(state.projectErrorsReported, currentProjects, noopOnDelete); + // Remove watches for the program no longer in the solution + if (state.watch) { + ts.mutateMapSkippingNewValues(state.allWatchedConfigFiles, currentProjects, { onDeleteValue: ts.closeFileWatcher }); + ts.mutateMapSkippingNewValues(state.allWatchedWildcardDirectories, currentProjects, { onDeleteValue: function (existingMap) { return existingMap.forEach(ts.closeFileWatcherOf); } }); + ts.mutateMapSkippingNewValues(state.allWatchedInputFiles, currentProjects, { onDeleteValue: function (existingMap) { return existingMap.forEach(ts.closeFileWatcher); } }); + } + return state.buildOrder = buildOrder; + } + function getBuildOrderFor(state, project, onlyReferences) { + var resolvedProject = project && resolveProjectName(state, project); + var buildOrderFromState = getBuildOrder(state); + if (isCircularBuildOrder(buildOrderFromState)) + return buildOrderFromState; + if (resolvedProject) { + var projectPath_1 = toResolvedConfigFilePath(state, resolvedProject); + var projectIndex = ts.findIndex(buildOrderFromState, function (configFileName) { return toResolvedConfigFilePath(state, configFileName) === projectPath_1; }); + if (projectIndex === -1) + return undefined; + } + var buildOrder = resolvedProject ? createBuildOrder(state, [resolvedProject]) : buildOrderFromState; + ts.Debug.assert(!isCircularBuildOrder(buildOrder)); + ts.Debug.assert(!onlyReferences || resolvedProject !== undefined); + ts.Debug.assert(!onlyReferences || buildOrder[buildOrder.length - 1] === resolvedProject); + return onlyReferences ? buildOrder.slice(0, buildOrder.length - 1) : buildOrder; + } + function enableCache(state) { + if (state.cache) { + disableCache(state); + } + var compilerHost = state.compilerHost, host = state.host; + var originalReadFileWithCache = state.readFileWithCache; + var originalGetSourceFile = compilerHost.getSourceFile; + var _a = ts.changeCompilerHostLikeToUseCache(host, function (fileName) { return toPath(state, fileName); }, function () { + var args = []; + for (var _i = 0; _i < arguments.length; _i++) { + args[_i] = arguments[_i]; + } + return originalGetSourceFile.call.apply(originalGetSourceFile, __spreadArrays([compilerHost], args)); + }), originalReadFile = _a.originalReadFile, originalFileExists = _a.originalFileExists, originalDirectoryExists = _a.originalDirectoryExists, originalCreateDirectory = _a.originalCreateDirectory, originalWriteFile = _a.originalWriteFile, getSourceFileWithCache = _a.getSourceFileWithCache, readFileWithCache = _a.readFileWithCache; + state.readFileWithCache = readFileWithCache; + compilerHost.getSourceFile = getSourceFileWithCache; + state.cache = { + originalReadFile: originalReadFile, + originalFileExists: originalFileExists, + originalDirectoryExists: originalDirectoryExists, + originalCreateDirectory: originalCreateDirectory, + originalWriteFile: originalWriteFile, + originalReadFileWithCache: originalReadFileWithCache, + originalGetSourceFile: originalGetSourceFile, + }; + } + function disableCache(state) { + if (!state.cache) + return; + var cache = state.cache, host = state.host, compilerHost = state.compilerHost, extendedConfigCache = state.extendedConfigCache, moduleResolutionCache = state.moduleResolutionCache; + host.readFile = cache.originalReadFile; + host.fileExists = cache.originalFileExists; + host.directoryExists = cache.originalDirectoryExists; + host.createDirectory = cache.originalCreateDirectory; + host.writeFile = cache.originalWriteFile; + compilerHost.getSourceFile = cache.originalGetSourceFile; + state.readFileWithCache = cache.originalReadFileWithCache; + extendedConfigCache.clear(); + if (moduleResolutionCache) { + moduleResolutionCache.directoryToModuleNameMap.clear(); + moduleResolutionCache.moduleNameToDirectoryMap.clear(); + } + state.cache = undefined; + } + function clearProjectStatus(state, resolved) { + state.projectStatus.delete(resolved); + state.diagnostics.delete(resolved); + } + function addProjToQueue(_a, proj, reloadLevel) { + var projectPendingBuild = _a.projectPendingBuild; + var value = projectPendingBuild.get(proj); + if (value === undefined) { + projectPendingBuild.set(proj, reloadLevel); + } + else if (value < reloadLevel) { + projectPendingBuild.set(proj, reloadLevel); + } + } + function setupInitialBuild(state, cancellationToken) { + // Set initial build if not already built + if (!state.allProjectBuildPending) + return; + state.allProjectBuildPending = false; + if (state.options.watch) { + reportWatchStatus(state, ts.Diagnostics.Starting_compilation_in_watch_mode); + } + enableCache(state); + var buildOrder = getBuildOrderFromAnyBuildOrder(getBuildOrder(state)); + buildOrder.forEach(function (configFileName) { + return state.projectPendingBuild.set(toResolvedConfigFilePath(state, configFileName), ts.ConfigFileProgramReloadLevel.None); + }); + if (cancellationToken) { + cancellationToken.throwIfCancellationRequested(); + } + } + var InvalidatedProjectKind; + (function (InvalidatedProjectKind) { + InvalidatedProjectKind[InvalidatedProjectKind["Build"] = 0] = "Build"; + InvalidatedProjectKind[InvalidatedProjectKind["UpdateBundle"] = 1] = "UpdateBundle"; + InvalidatedProjectKind[InvalidatedProjectKind["UpdateOutputFileStamps"] = 2] = "UpdateOutputFileStamps"; + })(InvalidatedProjectKind = ts.InvalidatedProjectKind || (ts.InvalidatedProjectKind = {})); + function doneInvalidatedProject(state, projectPath) { + state.projectPendingBuild.delete(projectPath); + state.currentInvalidatedProject = undefined; + return state.diagnostics.has(projectPath) ? + ts.ExitStatus.DiagnosticsPresent_OutputsSkipped : + ts.ExitStatus.Success; + } + function createUpdateOutputFileStampsProject(state, project, projectPath, config, buildOrder) { + var updateOutputFileStampsPending = true; + return { + kind: InvalidatedProjectKind.UpdateOutputFileStamps, + project: project, + projectPath: projectPath, + buildOrder: buildOrder, + getCompilerOptions: function () { return config.options; }, + getCurrentDirectory: function () { return state.currentDirectory; }, + updateOutputFileStatmps: function () { + updateOutputTimestamps(state, config, projectPath); + updateOutputFileStampsPending = false; + }, + done: function () { + if (updateOutputFileStampsPending) { + updateOutputTimestamps(state, config, projectPath); + } + return doneInvalidatedProject(state, projectPath); + } + }; + } + function createBuildOrUpdateInvalidedProject(kind, state, project, projectPath, projectIndex, config, buildOrder) { + var Step; + (function (Step) { + Step[Step["CreateProgram"] = 0] = "CreateProgram"; + Step[Step["SyntaxDiagnostics"] = 1] = "SyntaxDiagnostics"; + Step[Step["SemanticDiagnostics"] = 2] = "SemanticDiagnostics"; + Step[Step["Emit"] = 3] = "Emit"; + Step[Step["EmitBundle"] = 4] = "EmitBundle"; + Step[Step["BuildInvalidatedProjectOfBundle"] = 5] = "BuildInvalidatedProjectOfBundle"; + Step[Step["QueueReferencingProjects"] = 6] = "QueueReferencingProjects"; + Step[Step["Done"] = 7] = "Done"; + })(Step || (Step = {})); + var step = kind === InvalidatedProjectKind.Build ? Step.CreateProgram : Step.EmitBundle; + var program; + var buildResult; + var invalidatedProjectOfBundle; + return kind === InvalidatedProjectKind.Build ? + { + kind: kind, + project: project, + projectPath: projectPath, + buildOrder: buildOrder, + getCompilerOptions: function () { return config.options; }, + getCurrentDirectory: function () { return state.currentDirectory; }, + getBuilderProgram: function () { return withProgramOrUndefined(ts.identity); }, + getProgram: function () { + return withProgramOrUndefined(function (program) { return program.getProgramOrUndefined(); }); + }, + getSourceFile: function (fileName) { + return withProgramOrUndefined(function (program) { return program.getSourceFile(fileName); }); + }, + getSourceFiles: function () { + return withProgramOrEmptyArray(function (program) { return program.getSourceFiles(); }); + }, + getOptionsDiagnostics: function (cancellationToken) { + return withProgramOrEmptyArray(function (program) { return program.getOptionsDiagnostics(cancellationToken); }); + }, + getGlobalDiagnostics: function (cancellationToken) { + return withProgramOrEmptyArray(function (program) { return program.getGlobalDiagnostics(cancellationToken); }); + }, + getConfigFileParsingDiagnostics: function () { + return withProgramOrEmptyArray(function (program) { return program.getConfigFileParsingDiagnostics(); }); + }, + getSyntacticDiagnostics: function (sourceFile, cancellationToken) { + return withProgramOrEmptyArray(function (program) { return program.getSyntacticDiagnostics(sourceFile, cancellationToken); }); + }, + getAllDependencies: function (sourceFile) { + return withProgramOrEmptyArray(function (program) { return program.getAllDependencies(sourceFile); }); + }, + getSemanticDiagnostics: function (sourceFile, cancellationToken) { + return withProgramOrEmptyArray(function (program) { return program.getSemanticDiagnostics(sourceFile, cancellationToken); }); + }, + getSemanticDiagnosticsOfNextAffectedFile: function (cancellationToken, ignoreSourceFile) { + return withProgramOrUndefined(function (program) { + return (program.getSemanticDiagnosticsOfNextAffectedFile) && + program.getSemanticDiagnosticsOfNextAffectedFile(cancellationToken, ignoreSourceFile); + }); + }, + emit: function (targetSourceFile, writeFile, cancellationToken, emitOnlyDtsFiles, customTransformers) { + if (targetSourceFile || emitOnlyDtsFiles) { + return withProgramOrUndefined(function (program) { return program.emit(targetSourceFile, writeFile, cancellationToken, emitOnlyDtsFiles, customTransformers); }); + } + executeSteps(Step.SemanticDiagnostics, cancellationToken); + if (step !== Step.Emit) + return undefined; + return emit(writeFile, cancellationToken, customTransformers); + }, + done: done + } : + { + kind: kind, + project: project, + projectPath: projectPath, + buildOrder: buildOrder, + getCompilerOptions: function () { return config.options; }, + getCurrentDirectory: function () { return state.currentDirectory; }, + emit: function (writeFile, customTransformers) { + if (step !== Step.EmitBundle) + return invalidatedProjectOfBundle; + return emitBundle(writeFile, customTransformers); + }, + done: done, + }; + function done(cancellationToken, writeFile, customTransformers) { + executeSteps(Step.Done, cancellationToken, writeFile, customTransformers); + return doneInvalidatedProject(state, projectPath); + } + function withProgramOrUndefined(action) { + executeSteps(Step.CreateProgram); + return program && action(program); + } + function withProgramOrEmptyArray(action) { + return withProgramOrUndefined(action) || ts.emptyArray; + } + function createProgram() { + ts.Debug.assert(program === undefined); + if (state.options.dry) { + reportStatus(state, ts.Diagnostics.A_non_dry_build_would_build_project_0, project); + buildResult = BuildResultFlags.Success; + step = Step.QueueReferencingProjects; + return; + } + if (state.options.verbose) + reportStatus(state, ts.Diagnostics.Building_project_0, project); + if (config.fileNames.length === 0) { + reportAndStoreErrors(state, projectPath, ts.getConfigFileParsingDiagnostics(config)); + // Nothing to build - must be a solution file, basically + buildResult = BuildResultFlags.None; + step = Step.QueueReferencingProjects; + return; + } + var host = state.host, compilerHost = state.compilerHost; + state.projectCompilerOptions = config.options; + // Update module resolution cache if needed + updateModuleResolutionCache(state, project, config); + // Create program + program = host.createProgram(config.fileNames, config.options, compilerHost, getOldProgram(state, projectPath, config), ts.getConfigFileParsingDiagnostics(config), config.projectReferences); + step++; + } + function handleDiagnostics(diagnostics, errorFlags, errorType) { + if (diagnostics.length) { + buildResult = buildErrors(state, projectPath, program, config, diagnostics, errorFlags, errorType); + step = Step.QueueReferencingProjects; + } + else { + step++; + } + } + function getSyntaxDiagnostics(cancellationToken) { + ts.Debug.assertIsDefined(program); + handleDiagnostics(__spreadArrays(program.getConfigFileParsingDiagnostics(), program.getOptionsDiagnostics(cancellationToken), program.getGlobalDiagnostics(cancellationToken), program.getSyntacticDiagnostics(/*sourceFile*/ undefined, cancellationToken)), BuildResultFlags.SyntaxErrors, "Syntactic"); + } + function getSemanticDiagnostics(cancellationToken) { + handleDiagnostics(ts.Debug.checkDefined(program).getSemanticDiagnostics(/*sourceFile*/ undefined, cancellationToken), BuildResultFlags.TypeErrors, "Semantic"); + } + function emit(writeFileCallback, cancellationToken, customTransformers) { + ts.Debug.assertIsDefined(program); + ts.Debug.assert(step === Step.Emit); + // Before emitting lets backup state, so we can revert it back if there are declaration errors to handle emit and declaration errors correctly + program.backupState(); + var declDiagnostics; + var reportDeclarationDiagnostics = function (d) { return (declDiagnostics || (declDiagnostics = [])).push(d); }; + var outputFiles = []; + var emitResult = ts.emitFilesAndReportErrors(program, reportDeclarationDiagnostics, + /*writeFileName*/ undefined, + /*reportSummary*/ undefined, function (name, text, writeByteOrderMark) { return outputFiles.push({ name: name, text: text, writeByteOrderMark: writeByteOrderMark }); }, cancellationToken, + /*emitOnlyDts*/ false, customTransformers).emitResult; + // Don't emit .d.ts if there are decl file errors + if (declDiagnostics) { + program.restoreState(); + buildResult = buildErrors(state, projectPath, program, config, declDiagnostics, BuildResultFlags.DeclarationEmitErrors, "Declaration file"); + step = Step.QueueReferencingProjects; + return { + emitSkipped: true, + diagnostics: emitResult.diagnostics + }; + } + // Actual Emit + var host = state.host, compilerHost = state.compilerHost; + var resultFlags = BuildResultFlags.DeclarationOutputUnchanged; + var newestDeclarationFileContentChangedTime = minimumDate; + var anyDtsChanged = false; + var emitterDiagnostics = ts.createDiagnosticCollection(); + var emittedOutputs = ts.createMap(); + outputFiles.forEach(function (_a) { + var name = _a.name, text = _a.text, writeByteOrderMark = _a.writeByteOrderMark; + var priorChangeTime; + if (!anyDtsChanged && isDeclarationFile(name)) { + // Check for unchanged .d.ts files + if (host.fileExists(name) && state.readFileWithCache(name) === text) { + priorChangeTime = host.getModifiedTime(name); + } + else { + resultFlags &= ~BuildResultFlags.DeclarationOutputUnchanged; + anyDtsChanged = true; + } + } + emittedOutputs.set(toPath(state, name), name); + ts.writeFile(writeFileCallback ? { writeFile: writeFileCallback } : compilerHost, emitterDiagnostics, name, text, writeByteOrderMark); + if (priorChangeTime !== undefined) { + newestDeclarationFileContentChangedTime = newer(priorChangeTime, newestDeclarationFileContentChangedTime); + } + }); + finishEmit(emitterDiagnostics, emittedOutputs, newestDeclarationFileContentChangedTime, + /*newestDeclarationFileContentChangedTimeIsMaximumDate*/ anyDtsChanged, outputFiles.length ? outputFiles[0].name : ts.getFirstProjectOutput(config, !host.useCaseSensitiveFileNames()), resultFlags); + return emitResult; + } + function finishEmit(emitterDiagnostics, emittedOutputs, priorNewestUpdateTime, newestDeclarationFileContentChangedTimeIsMaximumDate, oldestOutputFileName, resultFlags) { + var emitDiagnostics = emitterDiagnostics.getDiagnostics(); + if (emitDiagnostics.length) { + buildResult = buildErrors(state, projectPath, program, config, emitDiagnostics, BuildResultFlags.EmitErrors, "Emit"); + step = Step.QueueReferencingProjects; + return emitDiagnostics; + } + if (state.writeFileName) { + emittedOutputs.forEach(function (name) { return listEmittedFile(state, config, name); }); + if (program) + ts.listFiles(program, state.writeFileName); + } + // Update time stamps for rest of the outputs + var newestDeclarationFileContentChangedTime = updateOutputTimestampsWorker(state, config, priorNewestUpdateTime, ts.Diagnostics.Updating_unchanged_output_timestamps_of_project_0, emittedOutputs); + state.diagnostics.delete(projectPath); + state.projectStatus.set(projectPath, { + type: ts.UpToDateStatusType.UpToDate, + newestDeclarationFileContentChangedTime: newestDeclarationFileContentChangedTimeIsMaximumDate ? + maximumDate : + newestDeclarationFileContentChangedTime, + oldestOutputFileName: oldestOutputFileName + }); + afterProgramDone(state, projectPath, program, config); + state.projectCompilerOptions = state.baseCompilerOptions; + step = Step.QueueReferencingProjects; + buildResult = resultFlags; + return emitDiagnostics; + } + function emitBundle(writeFileCallback, customTransformers) { + ts.Debug.assert(kind === InvalidatedProjectKind.UpdateBundle); + if (state.options.dry) { + reportStatus(state, ts.Diagnostics.A_non_dry_build_would_update_output_of_project_0, project); + buildResult = BuildResultFlags.Success; + step = Step.QueueReferencingProjects; + return undefined; + } + if (state.options.verbose) + reportStatus(state, ts.Diagnostics.Updating_output_of_project_0, project); + // Update js, and source map + var compilerHost = state.compilerHost; + state.projectCompilerOptions = config.options; + var outputFiles = ts.emitUsingBuildInfo(config, compilerHost, function (ref) { + var refName = resolveProjectName(state, ref.path); + return parseConfigFile(state, refName, toResolvedConfigFilePath(state, refName)); + }, customTransformers); + if (ts.isString(outputFiles)) { + reportStatus(state, ts.Diagnostics.Cannot_update_output_of_project_0_because_there_was_error_reading_file_1, project, relName(state, outputFiles)); + step = Step.BuildInvalidatedProjectOfBundle; + return invalidatedProjectOfBundle = createBuildOrUpdateInvalidedProject(InvalidatedProjectKind.Build, state, project, projectPath, projectIndex, config, buildOrder); + } + // Actual Emit + ts.Debug.assert(!!outputFiles.length); + var emitterDiagnostics = ts.createDiagnosticCollection(); + var emittedOutputs = ts.createMap(); + outputFiles.forEach(function (_a) { + var name = _a.name, text = _a.text, writeByteOrderMark = _a.writeByteOrderMark; + emittedOutputs.set(toPath(state, name), name); + ts.writeFile(writeFileCallback ? { writeFile: writeFileCallback } : compilerHost, emitterDiagnostics, name, text, writeByteOrderMark); + }); + var emitDiagnostics = finishEmit(emitterDiagnostics, emittedOutputs, minimumDate, + /*newestDeclarationFileContentChangedTimeIsMaximumDate*/ false, outputFiles[0].name, BuildResultFlags.DeclarationOutputUnchanged); + return { emitSkipped: false, diagnostics: emitDiagnostics }; + } + function executeSteps(till, cancellationToken, writeFile, customTransformers) { + while (step <= till && step < Step.Done) { + var currentStep = step; + switch (step) { + case Step.CreateProgram: + createProgram(); + break; + case Step.SyntaxDiagnostics: + getSyntaxDiagnostics(cancellationToken); + break; + case Step.SemanticDiagnostics: + getSemanticDiagnostics(cancellationToken); + break; + case Step.Emit: + emit(writeFile, cancellationToken, customTransformers); + break; + case Step.EmitBundle: + emitBundle(writeFile, customTransformers); + break; + case Step.BuildInvalidatedProjectOfBundle: + ts.Debug.checkDefined(invalidatedProjectOfBundle).done(cancellationToken); + step = Step.Done; + break; + case Step.QueueReferencingProjects: + queueReferencingProjects(state, project, projectPath, projectIndex, config, buildOrder, ts.Debug.checkDefined(buildResult)); + step++; + break; + // Should never be done + case Step.Done: + default: + ts.assertType(step); + } + ts.Debug.assert(step > currentStep); + } + } + } + function needsBuild(_a, status, config) { + var options = _a.options; + if (status.type !== ts.UpToDateStatusType.OutOfDateWithPrepend || options.force) + return true; + return config.fileNames.length === 0 || + !!ts.getConfigFileParsingDiagnostics(config).length || + !ts.isIncrementalCompilation(config.options); + } + function getNextInvalidatedProject(state, buildOrder, reportQueue) { + if (!state.projectPendingBuild.size) + return undefined; + if (isCircularBuildOrder(buildOrder)) + return undefined; + if (state.currentInvalidatedProject) { + // Only if same buildOrder the currentInvalidated project can be sent again + return ts.arrayIsEqualTo(state.currentInvalidatedProject.buildOrder, buildOrder) ? + state.currentInvalidatedProject : + undefined; + } + var options = state.options, projectPendingBuild = state.projectPendingBuild; + for (var projectIndex = 0; projectIndex < buildOrder.length; projectIndex++) { + var project = buildOrder[projectIndex]; + var projectPath = toResolvedConfigFilePath(state, project); + var reloadLevel = state.projectPendingBuild.get(projectPath); + if (reloadLevel === undefined) + continue; + if (reportQueue) { + reportQueue = false; + reportBuildQueue(state, buildOrder); + } + var config = parseConfigFile(state, project, projectPath); + if (!config) { + reportParseConfigFileDiagnostic(state, projectPath); + projectPendingBuild.delete(projectPath); + continue; + } + if (reloadLevel === ts.ConfigFileProgramReloadLevel.Full) { + watchConfigFile(state, project, projectPath, config); + watchWildCardDirectories(state, project, projectPath, config); + watchInputFiles(state, project, projectPath, config); + } + else if (reloadLevel === ts.ConfigFileProgramReloadLevel.Partial) { + // Update file names + var result = ts.getFileNamesFromConfigSpecs(config.configFileSpecs, ts.getDirectoryPath(project), config.options, state.parseConfigFileHost); + ts.updateErrorForNoInputFiles(result, project, config.configFileSpecs, config.errors, ts.canJsonReportNoInutFiles(config.raw)); + config.fileNames = result.fileNames; + watchInputFiles(state, project, projectPath, config); + } + var status = getUpToDateStatus(state, config, projectPath); + verboseReportProjectStatus(state, project, status); + if (!options.force) { + if (status.type === ts.UpToDateStatusType.UpToDate) { + reportAndStoreErrors(state, projectPath, ts.getConfigFileParsingDiagnostics(config)); + projectPendingBuild.delete(projectPath); + // Up to date, skip + if (options.dry) { + // In a dry build, inform the user of this fact + reportStatus(state, ts.Diagnostics.Project_0_is_up_to_date, project); + } + continue; + } + if (status.type === ts.UpToDateStatusType.UpToDateWithUpstreamTypes) { + reportAndStoreErrors(state, projectPath, ts.getConfigFileParsingDiagnostics(config)); + return createUpdateOutputFileStampsProject(state, project, projectPath, config, buildOrder); + } + } + if (status.type === ts.UpToDateStatusType.UpstreamBlocked) { + reportAndStoreErrors(state, projectPath, ts.getConfigFileParsingDiagnostics(config)); + projectPendingBuild.delete(projectPath); + if (options.verbose) { + reportStatus(state, status.upstreamProjectBlocked ? + ts.Diagnostics.Skipping_build_of_project_0_because_its_dependency_1_was_not_built : + ts.Diagnostics.Skipping_build_of_project_0_because_its_dependency_1_has_errors, project, status.upstreamProjectName); + } + continue; + } + if (status.type === ts.UpToDateStatusType.ContainerOnly) { + reportAndStoreErrors(state, projectPath, ts.getConfigFileParsingDiagnostics(config)); + projectPendingBuild.delete(projectPath); + // Do nothing + continue; + } + return createBuildOrUpdateInvalidedProject(needsBuild(state, status, config) ? + InvalidatedProjectKind.Build : + InvalidatedProjectKind.UpdateBundle, state, project, projectPath, projectIndex, config, buildOrder); + } + return undefined; + } + function listEmittedFile(_a, proj, file) { + var writeFileName = _a.writeFileName; + if (writeFileName && proj.options.listEmittedFiles) { + writeFileName("TSFILE: " + file); + } + } + function getOldProgram(_a, proj, parsed) { + var options = _a.options, builderPrograms = _a.builderPrograms, compilerHost = _a.compilerHost; + if (options.force) + return undefined; + var value = builderPrograms.get(proj); + if (value) + return value; + return ts.readBuilderProgram(parsed.options, compilerHost); + } + function afterProgramDone(_a, proj, program, config) { + var host = _a.host, watch = _a.watch, builderPrograms = _a.builderPrograms; + if (program) { + if (host.afterProgramEmitAndDiagnostics) { + host.afterProgramEmitAndDiagnostics(program); + } + if (watch) { + program.releaseProgram(); + builderPrograms.set(proj, program); + } + } + else if (host.afterEmitBundle) { + host.afterEmitBundle(config); + } + } + function buildErrors(state, resolvedPath, program, config, diagnostics, errorFlags, errorType) { + reportAndStoreErrors(state, resolvedPath, diagnostics); + // List files if any other build error using program (emit errors already report files) + if (program && state.writeFileName) + ts.listFiles(program, state.writeFileName); + state.projectStatus.set(resolvedPath, { type: ts.UpToDateStatusType.Unbuildable, reason: errorType + " errors" }); + afterProgramDone(state, resolvedPath, program, config); + state.projectCompilerOptions = state.baseCompilerOptions; + return errorFlags; + } + function updateModuleResolutionCache(state, proj, config) { + if (!state.moduleResolutionCache) + return; + // Update module resolution cache if needed + var moduleResolutionCache = state.moduleResolutionCache; + var projPath = toPath(state, proj); + if (moduleResolutionCache.directoryToModuleNameMap.redirectsMap.size === 0) { + // The own map will be for projectCompilerOptions + ts.Debug.assert(moduleResolutionCache.moduleNameToDirectoryMap.redirectsMap.size === 0); + moduleResolutionCache.directoryToModuleNameMap.redirectsMap.set(projPath, moduleResolutionCache.directoryToModuleNameMap.ownMap); + moduleResolutionCache.moduleNameToDirectoryMap.redirectsMap.set(projPath, moduleResolutionCache.moduleNameToDirectoryMap.ownMap); + } + else { + // Set correct own map + ts.Debug.assert(moduleResolutionCache.moduleNameToDirectoryMap.redirectsMap.size > 0); + var ref = { + sourceFile: config.options.configFile, + commandLine: config + }; + moduleResolutionCache.directoryToModuleNameMap.setOwnMap(moduleResolutionCache.directoryToModuleNameMap.getOrCreateMapOfCacheRedirects(ref)); + moduleResolutionCache.moduleNameToDirectoryMap.setOwnMap(moduleResolutionCache.moduleNameToDirectoryMap.getOrCreateMapOfCacheRedirects(ref)); + } + moduleResolutionCache.directoryToModuleNameMap.setOwnOptions(config.options); + moduleResolutionCache.moduleNameToDirectoryMap.setOwnOptions(config.options); + } + function checkConfigFileUpToDateStatus(state, configFile, oldestOutputFileTime, oldestOutputFileName) { + // Check tsconfig time + var tsconfigTime = state.host.getModifiedTime(configFile) || ts.missingFileModifiedTime; + if (oldestOutputFileTime < tsconfigTime) { + return { + type: ts.UpToDateStatusType.OutOfDateWithSelf, + outOfDateOutputFileName: oldestOutputFileName, + newerInputFileName: configFile + }; + } + } + function getUpToDateStatusWorker(state, project, resolvedPath) { + var newestInputFileName = undefined; + var newestInputFileTime = minimumDate; + var host = state.host; + // Get timestamps of input files + for (var _i = 0, _a = project.fileNames; _i < _a.length; _i++) { + var inputFile = _a[_i]; + if (!host.fileExists(inputFile)) { + return { + type: ts.UpToDateStatusType.Unbuildable, + reason: inputFile + " does not exist" + }; + } + var inputTime = host.getModifiedTime(inputFile) || ts.missingFileModifiedTime; + if (inputTime > newestInputFileTime) { + newestInputFileName = inputFile; + newestInputFileTime = inputTime; + } + } + // Container if no files are specified in the project + if (!project.fileNames.length && !ts.canJsonReportNoInutFiles(project.raw)) { + return { + type: ts.UpToDateStatusType.ContainerOnly + }; + } + // Collect the expected outputs of this project + var outputs = ts.getAllProjectOutputs(project, !host.useCaseSensitiveFileNames()); + // Now see if all outputs are newer than the newest input + var oldestOutputFileName = "(none)"; + var oldestOutputFileTime = maximumDate; + var newestOutputFileName = "(none)"; + var newestOutputFileTime = minimumDate; + var missingOutputFileName; + var newestDeclarationFileContentChangedTime = minimumDate; + var isOutOfDateWithInputs = false; + for (var _b = 0, outputs_1 = outputs; _b < outputs_1.length; _b++) { + var output = outputs_1[_b]; + // Output is missing; can stop checking + // Don't immediately return because we can still be upstream-blocked, which is a higher-priority status + if (!host.fileExists(output)) { + missingOutputFileName = output; + break; + } + var outputTime = host.getModifiedTime(output) || ts.missingFileModifiedTime; + if (outputTime < oldestOutputFileTime) { + oldestOutputFileTime = outputTime; + oldestOutputFileName = output; + } + // If an output is older than the newest input, we can stop checking + // Don't immediately return because we can still be upstream-blocked, which is a higher-priority status + if (outputTime < newestInputFileTime) { + isOutOfDateWithInputs = true; + break; + } + if (outputTime > newestOutputFileTime) { + newestOutputFileTime = outputTime; + newestOutputFileName = output; + } + // Keep track of when the most recent time a .d.ts file was changed. + // In addition to file timestamps, we also keep track of when a .d.ts file + // had its file touched but not had its contents changed - this allows us + // to skip a downstream typecheck + if (isDeclarationFile(output)) { + var outputModifiedTime = host.getModifiedTime(output) || ts.missingFileModifiedTime; + newestDeclarationFileContentChangedTime = newer(newestDeclarationFileContentChangedTime, outputModifiedTime); + } + } + var pseudoUpToDate = false; + var usesPrepend = false; + var upstreamChangedProject; + if (project.projectReferences) { + state.projectStatus.set(resolvedPath, { type: ts.UpToDateStatusType.ComputingUpstream }); + for (var _c = 0, _d = project.projectReferences; _c < _d.length; _c++) { + var ref = _d[_c]; + usesPrepend = usesPrepend || !!(ref.prepend); + var resolvedRef = ts.resolveProjectReferencePath(ref); + var resolvedRefPath = toResolvedConfigFilePath(state, resolvedRef); + var refStatus = getUpToDateStatus(state, parseConfigFile(state, resolvedRef, resolvedRefPath), resolvedRefPath); + // Its a circular reference ignore the status of this project + if (refStatus.type === ts.UpToDateStatusType.ComputingUpstream || + refStatus.type === ts.UpToDateStatusType.ContainerOnly) { // Container only ignore this project + continue; + } + // An upstream project is blocked + if (refStatus.type === ts.UpToDateStatusType.Unbuildable || + refStatus.type === ts.UpToDateStatusType.UpstreamBlocked) { + return { + type: ts.UpToDateStatusType.UpstreamBlocked, + upstreamProjectName: ref.path, + upstreamProjectBlocked: refStatus.type === ts.UpToDateStatusType.UpstreamBlocked + }; + } + // If the upstream project is out of date, then so are we (someone shouldn't have asked, though?) + if (refStatus.type !== ts.UpToDateStatusType.UpToDate) { + return { + type: ts.UpToDateStatusType.UpstreamOutOfDate, + upstreamProjectName: ref.path + }; + } + // Check oldest output file name only if there is no missing output file name + if (!missingOutputFileName) { + // If the upstream project's newest file is older than our oldest output, we + // can't be out of date because of it + if (refStatus.newestInputFileTime && refStatus.newestInputFileTime <= oldestOutputFileTime) { + continue; + } + // If the upstream project has only change .d.ts files, and we've built + // *after* those files, then we're "psuedo up to date" and eligible for a fast rebuild + if (refStatus.newestDeclarationFileContentChangedTime && refStatus.newestDeclarationFileContentChangedTime <= oldestOutputFileTime) { + pseudoUpToDate = true; + upstreamChangedProject = ref.path; + continue; + } + // We have an output older than an upstream output - we are out of date + ts.Debug.assert(oldestOutputFileName !== undefined, "Should have an oldest output filename here"); + return { + type: ts.UpToDateStatusType.OutOfDateWithUpstream, + outOfDateOutputFileName: oldestOutputFileName, + newerProjectName: ref.path + }; + } + } + } + if (missingOutputFileName !== undefined) { + return { + type: ts.UpToDateStatusType.OutputMissing, + missingOutputFileName: missingOutputFileName + }; + } + if (isOutOfDateWithInputs) { + return { + type: ts.UpToDateStatusType.OutOfDateWithSelf, + outOfDateOutputFileName: oldestOutputFileName, + newerInputFileName: newestInputFileName + }; + } + else { + // Check tsconfig time + var configStatus = checkConfigFileUpToDateStatus(state, project.options.configFilePath, oldestOutputFileTime, oldestOutputFileName); + if (configStatus) + return configStatus; + // Check extended config time + var extendedConfigStatus = ts.forEach(project.options.configFile.extendedSourceFiles || ts.emptyArray, function (configFile) { return checkConfigFileUpToDateStatus(state, configFile, oldestOutputFileTime, oldestOutputFileName); }); + if (extendedConfigStatus) + return extendedConfigStatus; + } + if (!state.buildInfoChecked.has(resolvedPath)) { + state.buildInfoChecked.set(resolvedPath, true); + var buildInfoPath = ts.getTsBuildInfoEmitOutputFilePath(project.options); + if (buildInfoPath) { + var value = state.readFileWithCache(buildInfoPath); + var buildInfo = value && ts.getBuildInfo(value); + if (buildInfo && (buildInfo.bundle || buildInfo.program) && buildInfo.version !== ts.version) { + return { + type: ts.UpToDateStatusType.TsVersionOutputOfDate, + version: buildInfo.version + }; + } + } + } + if (usesPrepend && pseudoUpToDate) { + return { + type: ts.UpToDateStatusType.OutOfDateWithPrepend, + outOfDateOutputFileName: oldestOutputFileName, + newerProjectName: upstreamChangedProject + }; + } + // Up to date + return { + type: pseudoUpToDate ? ts.UpToDateStatusType.UpToDateWithUpstreamTypes : ts.UpToDateStatusType.UpToDate, + newestDeclarationFileContentChangedTime: newestDeclarationFileContentChangedTime, + newestInputFileTime: newestInputFileTime, + newestOutputFileTime: newestOutputFileTime, + newestInputFileName: newestInputFileName, + newestOutputFileName: newestOutputFileName, + oldestOutputFileName: oldestOutputFileName + }; + } + function getUpToDateStatus(state, project, resolvedPath) { + if (project === undefined) { + return { type: ts.UpToDateStatusType.Unbuildable, reason: "File deleted mid-build" }; + } + var prior = state.projectStatus.get(resolvedPath); + if (prior !== undefined) { + return prior; + } + var actual = getUpToDateStatusWorker(state, project, resolvedPath); + state.projectStatus.set(resolvedPath, actual); + return actual; + } + function updateOutputTimestampsWorker(state, proj, priorNewestUpdateTime, verboseMessage, skipOutputs) { + var host = state.host; + var outputs = ts.getAllProjectOutputs(proj, !host.useCaseSensitiveFileNames()); + if (!skipOutputs || outputs.length !== skipOutputs.size) { + var reportVerbose = !!state.options.verbose; + var now = host.now ? host.now() : new Date(); + for (var _i = 0, outputs_2 = outputs; _i < outputs_2.length; _i++) { + var file = outputs_2[_i]; + if (skipOutputs && skipOutputs.has(toPath(state, file))) { + continue; + } + if (reportVerbose) { + reportVerbose = false; + reportStatus(state, verboseMessage, proj.options.configFilePath); + } + if (isDeclarationFile(file)) { + priorNewestUpdateTime = newer(priorNewestUpdateTime, host.getModifiedTime(file) || ts.missingFileModifiedTime); + } + host.setModifiedTime(file, now); + } + } + return priorNewestUpdateTime; + } + function updateOutputTimestamps(state, proj, resolvedPath) { + if (state.options.dry) { + return reportStatus(state, ts.Diagnostics.A_non_dry_build_would_update_timestamps_for_output_of_project_0, proj.options.configFilePath); + } + var priorNewestUpdateTime = updateOutputTimestampsWorker(state, proj, minimumDate, ts.Diagnostics.Updating_output_timestamps_of_project_0); + state.projectStatus.set(resolvedPath, { + type: ts.UpToDateStatusType.UpToDate, + newestDeclarationFileContentChangedTime: priorNewestUpdateTime, + oldestOutputFileName: ts.getFirstProjectOutput(proj, !state.host.useCaseSensitiveFileNames()) + }); + } + function queueReferencingProjects(state, project, projectPath, projectIndex, config, buildOrder, buildResult) { + // Queue only if there are no errors + if (buildResult & BuildResultFlags.AnyErrors) + return; + // Only composite projects can be referenced by other projects + if (!config.options.composite) + return; + // Always use build order to queue projects + for (var index = projectIndex + 1; index < buildOrder.length; index++) { + var nextProject = buildOrder[index]; + var nextProjectPath = toResolvedConfigFilePath(state, nextProject); + if (state.projectPendingBuild.has(nextProjectPath)) + continue; + var nextProjectConfig = parseConfigFile(state, nextProject, nextProjectPath); + if (!nextProjectConfig || !nextProjectConfig.projectReferences) + continue; + for (var _i = 0, _a = nextProjectConfig.projectReferences; _i < _a.length; _i++) { + var ref = _a[_i]; + var resolvedRefPath = resolveProjectName(state, ref.path); + if (toResolvedConfigFilePath(state, resolvedRefPath) !== projectPath) + continue; + // If the project is referenced with prepend, always build downstream projects, + // If declaration output is changed, build the project + // otherwise mark the project UpToDateWithUpstreamTypes so it updates output time stamps + var status = state.projectStatus.get(nextProjectPath); + if (status) { + switch (status.type) { + case ts.UpToDateStatusType.UpToDate: + if (buildResult & BuildResultFlags.DeclarationOutputUnchanged) { + if (ref.prepend) { + state.projectStatus.set(nextProjectPath, { + type: ts.UpToDateStatusType.OutOfDateWithPrepend, + outOfDateOutputFileName: status.oldestOutputFileName, + newerProjectName: project + }); + } + else { + status.type = ts.UpToDateStatusType.UpToDateWithUpstreamTypes; + } + break; + } + // falls through + case ts.UpToDateStatusType.UpToDateWithUpstreamTypes: + case ts.UpToDateStatusType.OutOfDateWithPrepend: + if (!(buildResult & BuildResultFlags.DeclarationOutputUnchanged)) { + state.projectStatus.set(nextProjectPath, { + type: ts.UpToDateStatusType.OutOfDateWithUpstream, + outOfDateOutputFileName: status.type === ts.UpToDateStatusType.OutOfDateWithPrepend ? status.outOfDateOutputFileName : status.oldestOutputFileName, + newerProjectName: project + }); + } + break; + case ts.UpToDateStatusType.UpstreamBlocked: + if (toResolvedConfigFilePath(state, resolveProjectName(state, status.upstreamProjectName)) === projectPath) { + clearProjectStatus(state, nextProjectPath); + } + break; + } + } + addProjToQueue(state, nextProjectPath, ts.ConfigFileProgramReloadLevel.None); + break; + } + } + } + function build(state, project, cancellationToken, onlyReferences) { + var buildOrder = getBuildOrderFor(state, project, onlyReferences); + if (!buildOrder) + return ts.ExitStatus.InvalidProject_OutputsSkipped; + setupInitialBuild(state, cancellationToken); + var reportQueue = true; + var successfulProjects = 0; + while (true) { + var invalidatedProject = getNextInvalidatedProject(state, buildOrder, reportQueue); + if (!invalidatedProject) + break; + reportQueue = false; + invalidatedProject.done(cancellationToken); + if (!state.diagnostics.has(invalidatedProject.projectPath)) + successfulProjects++; + } + disableCache(state); + reportErrorSummary(state, buildOrder); + startWatching(state, buildOrder); + return isCircularBuildOrder(buildOrder) + ? ts.ExitStatus.ProjectReferenceCycle_OutputsSkipped + : !buildOrder.some(function (p) { return state.diagnostics.has(toResolvedConfigFilePath(state, p)); }) + ? ts.ExitStatus.Success + : successfulProjects + ? ts.ExitStatus.DiagnosticsPresent_OutputsGenerated + : ts.ExitStatus.DiagnosticsPresent_OutputsSkipped; + } + function clean(state, project, onlyReferences) { + var buildOrder = getBuildOrderFor(state, project, onlyReferences); + if (!buildOrder) + return ts.ExitStatus.InvalidProject_OutputsSkipped; + if (isCircularBuildOrder(buildOrder)) { + reportErrors(state, buildOrder.circularDiagnostics); + return ts.ExitStatus.ProjectReferenceCycle_OutputsSkipped; + } + var options = state.options, host = state.host; + var filesToDelete = options.dry ? [] : undefined; + for (var _i = 0, buildOrder_1 = buildOrder; _i < buildOrder_1.length; _i++) { + var proj = buildOrder_1[_i]; + var resolvedPath = toResolvedConfigFilePath(state, proj); + var parsed = parseConfigFile(state, proj, resolvedPath); + if (parsed === undefined) { + // File has gone missing; fine to ignore here + reportParseConfigFileDiagnostic(state, resolvedPath); + continue; + } + var outputs = ts.getAllProjectOutputs(parsed, !host.useCaseSensitiveFileNames()); + for (var _a = 0, outputs_3 = outputs; _a < outputs_3.length; _a++) { + var output = outputs_3[_a]; + if (host.fileExists(output)) { + if (filesToDelete) { + filesToDelete.push(output); + } + else { + host.deleteFile(output); + invalidateProject(state, resolvedPath, ts.ConfigFileProgramReloadLevel.None); + } + } + } + } + if (filesToDelete) { + reportStatus(state, ts.Diagnostics.A_non_dry_build_would_delete_the_following_files_Colon_0, filesToDelete.map(function (f) { return "\r\n * " + f; }).join("")); + } + return ts.ExitStatus.Success; + } + function invalidateProject(state, resolved, reloadLevel) { + // If host implements getParsedCommandLine, we cant get list of files from parseConfigFileHost + if (state.host.getParsedCommandLine && reloadLevel === ts.ConfigFileProgramReloadLevel.Partial) { + reloadLevel = ts.ConfigFileProgramReloadLevel.Full; + } + if (reloadLevel === ts.ConfigFileProgramReloadLevel.Full) { + state.configFileCache.delete(resolved); + state.buildOrder = undefined; + } + state.needsSummary = true; + clearProjectStatus(state, resolved); + addProjToQueue(state, resolved, reloadLevel); + enableCache(state); + } + function invalidateProjectAndScheduleBuilds(state, resolvedPath, reloadLevel) { + state.reportFileChangeDetected = true; + invalidateProject(state, resolvedPath, reloadLevel); + scheduleBuildInvalidatedProject(state); + } + function scheduleBuildInvalidatedProject(state) { + var hostWithWatch = state.hostWithWatch; + if (!hostWithWatch.setTimeout || !hostWithWatch.clearTimeout) { + return; + } + if (state.timerToBuildInvalidatedProject) { + hostWithWatch.clearTimeout(state.timerToBuildInvalidatedProject); + } + state.timerToBuildInvalidatedProject = hostWithWatch.setTimeout(buildNextInvalidatedProject, 250, state); + } + function buildNextInvalidatedProject(state) { + state.timerToBuildInvalidatedProject = undefined; + if (state.reportFileChangeDetected) { + state.reportFileChangeDetected = false; + state.projectErrorsReported.clear(); + reportWatchStatus(state, ts.Diagnostics.File_change_detected_Starting_incremental_compilation); + } + var buildOrder = getBuildOrder(state); + var invalidatedProject = getNextInvalidatedProject(state, buildOrder, /*reportQueue*/ false); + if (invalidatedProject) { + invalidatedProject.done(); + if (state.projectPendingBuild.size) { + // Schedule next project for build + if (state.watch && !state.timerToBuildInvalidatedProject) { + scheduleBuildInvalidatedProject(state); + } + return; + } + } + disableCache(state); + reportErrorSummary(state, buildOrder); + } + function watchConfigFile(state, resolved, resolvedPath, parsed) { + if (!state.watch || state.allWatchedConfigFiles.has(resolvedPath)) + return; + state.allWatchedConfigFiles.set(resolvedPath, state.watchFile(state.hostWithWatch, resolved, function () { + invalidateProjectAndScheduleBuilds(state, resolvedPath, ts.ConfigFileProgramReloadLevel.Full); + }, ts.PollingInterval.High, parsed === null || parsed === void 0 ? void 0 : parsed.watchOptions, ts.WatchType.ConfigFile, resolved)); + } + function isSameFile(state, file1, file2) { + return ts.comparePaths(file1, file2, state.currentDirectory, !state.host.useCaseSensitiveFileNames()) === 0 /* EqualTo */; + } + function isOutputFile(state, fileName, configFile) { + if (configFile.options.noEmit) + return false; + // ts or tsx files are not output + if (!ts.fileExtensionIs(fileName, ".d.ts" /* Dts */) && + (ts.fileExtensionIs(fileName, ".ts" /* Ts */) || ts.fileExtensionIs(fileName, ".tsx" /* Tsx */))) { + return false; + } + // If options have --outFile or --out, check if its that + var out = configFile.options.outFile || configFile.options.out; + if (out && (isSameFile(state, fileName, out) || isSameFile(state, fileName, ts.removeFileExtension(out) + ".d.ts" /* Dts */))) { + return true; + } + // If declarationDir is specified, return if its a file in that directory + if (configFile.options.declarationDir && ts.containsPath(configFile.options.declarationDir, fileName, state.currentDirectory, !state.host.useCaseSensitiveFileNames())) { + return true; + } + // If --outDir, check if file is in that directory + if (configFile.options.outDir && ts.containsPath(configFile.options.outDir, fileName, state.currentDirectory, !state.host.useCaseSensitiveFileNames())) { + return true; + } + return !ts.forEach(configFile.fileNames, function (inputFile) { return isSameFile(state, fileName, inputFile); }); + } + function watchWildCardDirectories(state, resolved, resolvedPath, parsed) { + if (!state.watch) + return; + ts.updateWatchingWildcardDirectories(getOrCreateValueMapFromConfigFileMap(state.allWatchedWildcardDirectories, resolvedPath), ts.createMapFromTemplate(parsed.configFileSpecs.wildcardDirectories), function (dir, flags) { return state.watchDirectory(state.hostWithWatch, dir, function (fileOrDirectory) { + var fileOrDirectoryPath = toPath(state, fileOrDirectory); + if (fileOrDirectoryPath !== toPath(state, dir) && ts.hasExtension(fileOrDirectoryPath) && !ts.isSupportedSourceFileName(fileOrDirectory, parsed.options)) { + state.writeLog("Project: " + resolved + " Detected file add/remove of non supported extension: " + fileOrDirectory); + return; + } + if (isOutputFile(state, fileOrDirectory, parsed)) { + state.writeLog(fileOrDirectory + " is output file"); + return; + } + invalidateProjectAndScheduleBuilds(state, resolvedPath, ts.ConfigFileProgramReloadLevel.Partial); + }, flags, parsed === null || parsed === void 0 ? void 0 : parsed.watchOptions, ts.WatchType.WildcardDirectory, resolved); }); + } + function watchInputFiles(state, resolved, resolvedPath, parsed) { + if (!state.watch) + return; + ts.mutateMap(getOrCreateValueMapFromConfigFileMap(state.allWatchedInputFiles, resolvedPath), ts.arrayToMap(parsed.fileNames, function (fileName) { return toPath(state, fileName); }), { + createNewValue: function (path, input) { return state.watchFilePath(state.hostWithWatch, input, function () { return invalidateProjectAndScheduleBuilds(state, resolvedPath, ts.ConfigFileProgramReloadLevel.None); }, ts.PollingInterval.Low, parsed === null || parsed === void 0 ? void 0 : parsed.watchOptions, path, ts.WatchType.SourceFile, resolved); }, + onDeleteValue: ts.closeFileWatcher, + }); + } + function startWatching(state, buildOrder) { + if (!state.watchAllProjectsPending) + return; + state.watchAllProjectsPending = false; + for (var _i = 0, _a = getBuildOrderFromAnyBuildOrder(buildOrder); _i < _a.length; _i++) { + var resolved = _a[_i]; + var resolvedPath = toResolvedConfigFilePath(state, resolved); + var cfg = parseConfigFile(state, resolved, resolvedPath); + // Watch this file + watchConfigFile(state, resolved, resolvedPath, cfg); + if (cfg) { + // Update watchers for wildcard directories + watchWildCardDirectories(state, resolved, resolvedPath, cfg); + // Watch input files + watchInputFiles(state, resolved, resolvedPath, cfg); + } + } + } + function stopWatching(state) { + ts.clearMap(state.allWatchedConfigFiles, ts.closeFileWatcher); + ts.clearMap(state.allWatchedWildcardDirectories, function (watchedWildcardDirectories) { return ts.clearMap(watchedWildcardDirectories, ts.closeFileWatcherOf); }); + ts.clearMap(state.allWatchedInputFiles, function (watchedWildcardDirectories) { return ts.clearMap(watchedWildcardDirectories, ts.closeFileWatcher); }); + } + function createSolutionBuilderWorker(watch, hostOrHostWithWatch, rootNames, options, baseWatchOptions) { + var state = createSolutionBuilderState(watch, hostOrHostWithWatch, rootNames, options, baseWatchOptions); + return { + build: function (project, cancellationToken) { return build(state, project, cancellationToken); }, + clean: function (project) { return clean(state, project); }, + buildReferences: function (project, cancellationToken) { return build(state, project, cancellationToken, /*onlyReferences*/ true); }, + cleanReferences: function (project) { return clean(state, project, /*onlyReferences*/ true); }, + getNextInvalidatedProject: function (cancellationToken) { + setupInitialBuild(state, cancellationToken); + return getNextInvalidatedProject(state, getBuildOrder(state), /*reportQueue*/ false); + }, + getBuildOrder: function () { return getBuildOrder(state); }, + getUpToDateStatusOfProject: function (project) { + var configFileName = resolveProjectName(state, project); + var configFilePath = toResolvedConfigFilePath(state, configFileName); + return getUpToDateStatus(state, parseConfigFile(state, configFileName, configFilePath), configFilePath); + }, + invalidateProject: function (configFilePath, reloadLevel) { return invalidateProject(state, configFilePath, reloadLevel || ts.ConfigFileProgramReloadLevel.None); }, + buildNextInvalidatedProject: function () { return buildNextInvalidatedProject(state); }, + getAllParsedConfigs: function () { return ts.arrayFrom(ts.mapDefinedIterator(state.configFileCache.values(), function (config) { return isParsedCommandLine(config) ? config : undefined; })); }, + close: function () { return stopWatching(state); }, + }; + } + function relName(state, path) { + return ts.convertToRelativePath(path, state.currentDirectory, function (f) { return state.getCanonicalFileName(f); }); + } + function reportStatus(state, message) { + var args = []; + for (var _i = 2; _i < arguments.length; _i++) { + args[_i - 2] = arguments[_i]; + } + state.host.reportSolutionBuilderStatus(ts.createCompilerDiagnostic.apply(void 0, __spreadArrays([message], args))); + } + function reportWatchStatus(state, message) { + var args = []; + for (var _i = 2; _i < arguments.length; _i++) { + args[_i - 2] = arguments[_i]; + } + if (state.hostWithWatch.onWatchStatusChange) { + state.hostWithWatch.onWatchStatusChange(ts.createCompilerDiagnostic.apply(void 0, __spreadArrays([message], args)), state.host.getNewLine(), state.baseCompilerOptions); + } + } + function reportErrors(_a, errors) { + var host = _a.host; + errors.forEach(function (err) { return host.reportDiagnostic(err); }); + } + function reportAndStoreErrors(state, proj, errors) { + reportErrors(state, errors); + state.projectErrorsReported.set(proj, true); + if (errors.length) { + state.diagnostics.set(proj, errors); + } + } + function reportParseConfigFileDiagnostic(state, proj) { + reportAndStoreErrors(state, proj, [state.configFileCache.get(proj)]); + } + function reportErrorSummary(state, buildOrder) { + if (!state.needsSummary) + return; + state.needsSummary = false; + var canReportSummary = state.watch || !!state.host.reportErrorSummary; + var diagnostics = state.diagnostics; + var totalErrors = 0; + if (isCircularBuildOrder(buildOrder)) { + reportBuildQueue(state, buildOrder.buildOrder); + reportErrors(state, buildOrder.circularDiagnostics); + if (canReportSummary) + totalErrors += ts.getErrorCountForSummary(buildOrder.circularDiagnostics); + } + else { + // Report errors from the other projects + buildOrder.forEach(function (project) { + var projectPath = toResolvedConfigFilePath(state, project); + if (!state.projectErrorsReported.has(projectPath)) { + reportErrors(state, diagnostics.get(projectPath) || ts.emptyArray); + } + }); + if (canReportSummary) + diagnostics.forEach(function (singleProjectErrors) { return totalErrors += ts.getErrorCountForSummary(singleProjectErrors); }); + } + if (state.watch) { + reportWatchStatus(state, ts.getWatchErrorSummaryDiagnosticMessage(totalErrors), totalErrors); + } + else if (state.host.reportErrorSummary) { + state.host.reportErrorSummary(totalErrors); + } + } + /** + * Report the build ordering inferred from the current project graph if we're in verbose mode + */ + function reportBuildQueue(state, buildQueue) { + if (state.options.verbose) { + reportStatus(state, ts.Diagnostics.Projects_in_this_build_Colon_0, buildQueue.map(function (s) { return "\r\n * " + relName(state, s); }).join("")); + } + } + function reportUpToDateStatus(state, configFileName, status) { + switch (status.type) { + case ts.UpToDateStatusType.OutOfDateWithSelf: + return reportStatus(state, ts.Diagnostics.Project_0_is_out_of_date_because_oldest_output_1_is_older_than_newest_input_2, relName(state, configFileName), relName(state, status.outOfDateOutputFileName), relName(state, status.newerInputFileName)); + case ts.UpToDateStatusType.OutOfDateWithUpstream: + return reportStatus(state, ts.Diagnostics.Project_0_is_out_of_date_because_oldest_output_1_is_older_than_newest_input_2, relName(state, configFileName), relName(state, status.outOfDateOutputFileName), relName(state, status.newerProjectName)); + case ts.UpToDateStatusType.OutputMissing: + return reportStatus(state, ts.Diagnostics.Project_0_is_out_of_date_because_output_file_1_does_not_exist, relName(state, configFileName), relName(state, status.missingOutputFileName)); + case ts.UpToDateStatusType.UpToDate: + if (status.newestInputFileTime !== undefined) { + return reportStatus(state, ts.Diagnostics.Project_0_is_up_to_date_because_newest_input_1_is_older_than_oldest_output_2, relName(state, configFileName), relName(state, status.newestInputFileName || ""), relName(state, status.oldestOutputFileName || "")); + } + // Don't report anything for "up to date because it was already built" -- too verbose + break; + case ts.UpToDateStatusType.OutOfDateWithPrepend: + return reportStatus(state, ts.Diagnostics.Project_0_is_out_of_date_because_output_of_its_dependency_1_has_changed, relName(state, configFileName), relName(state, status.newerProjectName)); + case ts.UpToDateStatusType.UpToDateWithUpstreamTypes: + return reportStatus(state, ts.Diagnostics.Project_0_is_up_to_date_with_d_ts_files_from_its_dependencies, relName(state, configFileName)); + case ts.UpToDateStatusType.UpstreamOutOfDate: + return reportStatus(state, ts.Diagnostics.Project_0_is_out_of_date_because_its_dependency_1_is_out_of_date, relName(state, configFileName), relName(state, status.upstreamProjectName)); + case ts.UpToDateStatusType.UpstreamBlocked: + return reportStatus(state, status.upstreamProjectBlocked ? + ts.Diagnostics.Project_0_can_t_be_built_because_its_dependency_1_was_not_built : + ts.Diagnostics.Project_0_can_t_be_built_because_its_dependency_1_has_errors, relName(state, configFileName), relName(state, status.upstreamProjectName)); + case ts.UpToDateStatusType.Unbuildable: + return reportStatus(state, ts.Diagnostics.Failed_to_parse_file_0_Colon_1, relName(state, configFileName), status.reason); + case ts.UpToDateStatusType.TsVersionOutputOfDate: + return reportStatus(state, ts.Diagnostics.Project_0_is_out_of_date_because_output_for_it_was_generated_with_version_1_that_differs_with_current_version_2, relName(state, configFileName), status.version, ts.version); + case ts.UpToDateStatusType.ContainerOnly: + // Don't report status on "solution" projects + // falls through + case ts.UpToDateStatusType.ComputingUpstream: + // Should never leak from getUptoDateStatusWorker + break; + default: + ts.assertType(status); + } + } + /** + * Report the up-to-date status of a project if we're in verbose mode + */ + function verboseReportProjectStatus(state, configFileName, status) { + if (state.options.verbose) { + reportUpToDateStatus(state, configFileName, status); + } + } +})(ts || (ts = {})); +var ts; +(function (ts) { + var server; + (function (server) { + /* @internal */ + server.ActionSet = "action::set"; + /* @internal */ + server.ActionInvalidate = "action::invalidate"; + /* @internal */ + server.ActionPackageInstalled = "action::packageInstalled"; + /* @internal */ + server.EventTypesRegistry = "event::typesRegistry"; + /* @internal */ + server.EventBeginInstallTypes = "event::beginInstallTypes"; + /* @internal */ + server.EventEndInstallTypes = "event::endInstallTypes"; + /* @internal */ + server.EventInitializationFailed = "event::initializationFailed"; + /* @internal */ + var Arguments; + (function (Arguments) { + Arguments.GlobalCacheLocation = "--globalTypingsCacheLocation"; + Arguments.LogFile = "--logFile"; + Arguments.EnableTelemetry = "--enableTelemetry"; + Arguments.TypingSafeListLocation = "--typingSafeListLocation"; + Arguments.TypesMapLocation = "--typesMapLocation"; + /** + * This argument specifies the location of the NPM executable. + * typingsInstaller will run the command with `${npmLocation} install ...`. + */ + Arguments.NpmLocation = "--npmLocation"; + /** + * Flag indicating that the typings installer should try to validate the default npm location. + * If the default npm is not found when this flag is enabled, fallback to `npm install` + */ + Arguments.ValidateDefaultNpmLocation = "--validateDefaultNpmLocation"; + })(Arguments = server.Arguments || (server.Arguments = {})); + /* @internal */ + function hasArgument(argumentName) { + return ts.sys.args.indexOf(argumentName) >= 0; + } + server.hasArgument = hasArgument; + /* @internal */ + function findArgument(argumentName) { + var index = ts.sys.args.indexOf(argumentName); + return index >= 0 && index < ts.sys.args.length - 1 + ? ts.sys.args[index + 1] + : undefined; + } + server.findArgument = findArgument; + /* @internal */ + function nowString() { + // E.g. "12:34:56.789" + var d = new Date(); + return d.getHours() + ":" + d.getMinutes() + ":" + d.getSeconds() + "." + d.getMilliseconds(); + } + server.nowString = nowString; + })(server = ts.server || (ts.server = {})); +})(ts || (ts = {})); +/* @internal */ +var ts; +(function (ts) { + var JsTyping; + (function (JsTyping) { + function isTypingUpToDate(cachedTyping, availableTypingVersions) { + var availableVersion = new ts.Version(ts.getProperty(availableTypingVersions, "ts" + ts.versionMajorMinor) || ts.getProperty(availableTypingVersions, "latest")); + return availableVersion.compareTo(cachedTyping.version) <= 0; + } + JsTyping.isTypingUpToDate = isTypingUpToDate; + JsTyping.nodeCoreModuleList = [ + "assert", + "async_hooks", + "buffer", + "child_process", + "cluster", + "console", + "constants", + "crypto", + "dgram", + "dns", + "domain", + "events", + "fs", + "http", + "https", + "http2", + "inspector", + "net", + "os", + "path", + "perf_hooks", + "process", + "punycode", + "querystring", + "readline", + "repl", + "stream", + "string_decoder", + "timers", + "tls", + "tty", + "url", + "util", + "v8", + "vm", + "zlib" + ]; + JsTyping.nodeCoreModules = ts.arrayToSet(JsTyping.nodeCoreModuleList); + function nonRelativeModuleNameForTypingCache(moduleName) { + return JsTyping.nodeCoreModules.has(moduleName) ? "node" : moduleName; + } + JsTyping.nonRelativeModuleNameForTypingCache = nonRelativeModuleNameForTypingCache; + function loadSafeList(host, safeListPath) { + var result = ts.readConfigFile(safeListPath, function (path) { return host.readFile(path); }); + return ts.createMapFromTemplate(result.config); + } + JsTyping.loadSafeList = loadSafeList; + function loadTypesMap(host, typesMapPath) { + var result = ts.readConfigFile(typesMapPath, function (path) { return host.readFile(path); }); + if (result.config) { + return ts.createMapFromTemplate(result.config.simpleMap); + } + return undefined; + } + JsTyping.loadTypesMap = loadTypesMap; + /** + * @param host is the object providing I/O related operations. + * @param fileNames are the file names that belong to the same project + * @param projectRootPath is the path to the project root directory + * @param safeListPath is the path used to retrieve the safe list + * @param packageNameToTypingLocation is the map of package names to their cached typing locations and installed versions + * @param typeAcquisition is used to customize the typing acquisition process + * @param compilerOptions are used as a source for typing inference + */ + function discoverTypings(host, log, fileNames, projectRootPath, safeList, packageNameToTypingLocation, typeAcquisition, unresolvedImports, typesRegistry) { + if (!typeAcquisition || !typeAcquisition.enable) { + return { cachedTypingPaths: [], newTypingNames: [], filesToWatch: [] }; + } + // A typing name to typing file path mapping + var inferredTypings = ts.createMap(); + // Only infer typings for .js and .jsx files + fileNames = ts.mapDefined(fileNames, function (fileName) { + var path = ts.normalizePath(fileName); + if (ts.hasJSFileExtension(path)) { + return path; + } + }); + var filesToWatch = []; + if (typeAcquisition.include) + addInferredTypings(typeAcquisition.include, "Explicitly included types"); + var exclude = typeAcquisition.exclude || []; + // Directories to search for package.json, bower.json and other typing information + var possibleSearchDirs = ts.arrayToSet(fileNames, ts.getDirectoryPath); + possibleSearchDirs.set(projectRootPath, true); + possibleSearchDirs.forEach(function (_true, searchDir) { + var packageJsonPath = ts.combinePaths(searchDir, "package.json"); + getTypingNamesFromJson(packageJsonPath, filesToWatch); + var bowerJsonPath = ts.combinePaths(searchDir, "bower.json"); + getTypingNamesFromJson(bowerJsonPath, filesToWatch); + var bowerComponentsPath = ts.combinePaths(searchDir, "bower_components"); + getTypingNamesFromPackagesFolder(bowerComponentsPath, filesToWatch); + var nodeModulesPath = ts.combinePaths(searchDir, "node_modules"); + getTypingNamesFromPackagesFolder(nodeModulesPath, filesToWatch); + }); + getTypingNamesFromSourceFileNames(fileNames); + // add typings for unresolved imports + if (unresolvedImports) { + var module_1 = ts.deduplicate(unresolvedImports.map(nonRelativeModuleNameForTypingCache), ts.equateStringsCaseSensitive, ts.compareStringsCaseSensitive); + addInferredTypings(module_1, "Inferred typings from unresolved imports"); + } + // Add the cached typing locations for inferred typings that are already installed + packageNameToTypingLocation.forEach(function (typing, name) { + var registryEntry = typesRegistry.get(name); + if (inferredTypings.has(name) && inferredTypings.get(name) === undefined && registryEntry !== undefined && isTypingUpToDate(typing, registryEntry)) { + inferredTypings.set(name, typing.typingLocation); + } + }); + // Remove typings that the user has added to the exclude list + for (var _i = 0, exclude_1 = exclude; _i < exclude_1.length; _i++) { + var excludeTypingName = exclude_1[_i]; + var didDelete = inferredTypings.delete(excludeTypingName); + if (didDelete && log) + log("Typing for " + excludeTypingName + " is in exclude list, will be ignored."); + } + var newTypingNames = []; + var cachedTypingPaths = []; + inferredTypings.forEach(function (inferred, typing) { + if (inferred !== undefined) { + cachedTypingPaths.push(inferred); + } + else { + newTypingNames.push(typing); + } + }); + var result = { cachedTypingPaths: cachedTypingPaths, newTypingNames: newTypingNames, filesToWatch: filesToWatch }; + if (log) + log("Result: " + JSON.stringify(result)); + return result; + function addInferredTyping(typingName) { + if (!inferredTypings.has(typingName)) { + inferredTypings.set(typingName, undefined); // TODO: GH#18217 + } + } + function addInferredTypings(typingNames, message) { + if (log) + log(message + ": " + JSON.stringify(typingNames)); + ts.forEach(typingNames, addInferredTyping); + } + /** + * Get the typing info from common package manager json files like package.json or bower.json + */ + function getTypingNamesFromJson(jsonPath, filesToWatch) { + if (!host.fileExists(jsonPath)) { + return; + } + filesToWatch.push(jsonPath); + var jsonConfig = ts.readConfigFile(jsonPath, function (path) { return host.readFile(path); }).config; + var jsonTypingNames = ts.flatMap([jsonConfig.dependencies, jsonConfig.devDependencies, jsonConfig.optionalDependencies, jsonConfig.peerDependencies], ts.getOwnKeys); + addInferredTypings(jsonTypingNames, "Typing names in '" + jsonPath + "' dependencies"); + } + /** + * Infer typing names from given file names. For example, the file name "jquery-min.2.3.4.js" + * should be inferred to the 'jquery' typing name; and "angular-route.1.2.3.js" should be inferred + * to the 'angular-route' typing name. + * @param fileNames are the names for source files in the project + */ + function getTypingNamesFromSourceFileNames(fileNames) { + var fromFileNames = ts.mapDefined(fileNames, function (j) { + if (!ts.hasJSFileExtension(j)) + return undefined; + var inferredTypingName = ts.removeFileExtension(ts.getBaseFileName(j.toLowerCase())); + var cleanedTypingName = ts.removeMinAndVersionNumbers(inferredTypingName); + return safeList.get(cleanedTypingName); + }); + if (fromFileNames.length) { + addInferredTypings(fromFileNames, "Inferred typings from file names"); + } + var hasJsxFile = ts.some(fileNames, function (f) { return ts.fileExtensionIs(f, ".jsx" /* Jsx */); }); + if (hasJsxFile) { + if (log) + log("Inferred 'react' typings due to presence of '.jsx' extension"); + addInferredTyping("react"); + } + } + /** + * Infer typing names from packages folder (ex: node_module, bower_components) + * @param packagesFolderPath is the path to the packages folder + */ + function getTypingNamesFromPackagesFolder(packagesFolderPath, filesToWatch) { + filesToWatch.push(packagesFolderPath); + // Todo: add support for ModuleResolutionHost too + if (!host.directoryExists(packagesFolderPath)) { + return; + } + // depth of 2, so we access `node_modules/foo` but not `node_modules/foo/bar` + var fileNames = host.readDirectory(packagesFolderPath, [".json" /* Json */], /*excludes*/ undefined, /*includes*/ undefined, /*depth*/ 2); + if (log) + log("Searching for typing names in " + packagesFolderPath + "; all files: " + JSON.stringify(fileNames)); + var packageNames = []; + for (var _i = 0, fileNames_1 = fileNames; _i < fileNames_1.length; _i++) { + var fileName = fileNames_1[_i]; + var normalizedFileName = ts.normalizePath(fileName); + var baseFileName = ts.getBaseFileName(normalizedFileName); + if (baseFileName !== "package.json" && baseFileName !== "bower.json") { + continue; + } + var result_1 = ts.readConfigFile(normalizedFileName, function (path) { return host.readFile(path); }); + var packageJson = result_1.config; + // npm 3's package.json contains a "_requiredBy" field + // we should include all the top level module names for npm 2, and only module names whose + // "_requiredBy" field starts with "#" or equals "/" for npm 3. + if (baseFileName === "package.json" && packageJson._requiredBy && + ts.filter(packageJson._requiredBy, function (r) { return r[0] === "#" || r === "/"; }).length === 0) { + continue; + } + // If the package has its own d.ts typings, those will take precedence. Otherwise the package name will be used + // to download d.ts files from DefinitelyTyped + if (!packageJson.name) { + continue; + } + var ownTypes = packageJson.types || packageJson.typings; + if (ownTypes) { + var absolutePath = ts.getNormalizedAbsolutePath(ownTypes, ts.getDirectoryPath(normalizedFileName)); + if (log) + log(" Package '" + packageJson.name + "' provides its own types."); + inferredTypings.set(packageJson.name, absolutePath); + } + else { + packageNames.push(packageJson.name); + } + } + addInferredTypings(packageNames, " Found package names"); + } + } + JsTyping.discoverTypings = discoverTypings; + var NameValidationResult; + (function (NameValidationResult) { + NameValidationResult[NameValidationResult["Ok"] = 0] = "Ok"; + NameValidationResult[NameValidationResult["EmptyName"] = 1] = "EmptyName"; + NameValidationResult[NameValidationResult["NameTooLong"] = 2] = "NameTooLong"; + NameValidationResult[NameValidationResult["NameStartsWithDot"] = 3] = "NameStartsWithDot"; + NameValidationResult[NameValidationResult["NameStartsWithUnderscore"] = 4] = "NameStartsWithUnderscore"; + NameValidationResult[NameValidationResult["NameContainsNonURISafeCharacters"] = 5] = "NameContainsNonURISafeCharacters"; + })(NameValidationResult = JsTyping.NameValidationResult || (JsTyping.NameValidationResult = {})); + var maxPackageNameLength = 214; + /** + * Validates package name using rules defined at https://docs.npmjs.com/files/package.json + */ + function validatePackageName(packageName) { + return validatePackageNameWorker(packageName, /*supportScopedPackage*/ true); + } + JsTyping.validatePackageName = validatePackageName; + function validatePackageNameWorker(packageName, supportScopedPackage) { + if (!packageName) { + return 1 /* EmptyName */; + } + if (packageName.length > maxPackageNameLength) { + return 2 /* NameTooLong */; + } + if (packageName.charCodeAt(0) === 46 /* dot */) { + return 3 /* NameStartsWithDot */; + } + if (packageName.charCodeAt(0) === 95 /* _ */) { + return 4 /* NameStartsWithUnderscore */; + } + // check if name is scope package like: starts with @ and has one '/' in the middle + // scoped packages are not currently supported + if (supportScopedPackage) { + var matches = /^@([^/]+)\/([^/]+)$/.exec(packageName); + if (matches) { + var scopeResult = validatePackageNameWorker(matches[1], /*supportScopedPackage*/ false); + if (scopeResult !== 0 /* Ok */) { + return { name: matches[1], isScopeName: true, result: scopeResult }; + } + var packageResult = validatePackageNameWorker(matches[2], /*supportScopedPackage*/ false); + if (packageResult !== 0 /* Ok */) { + return { name: matches[2], isScopeName: false, result: packageResult }; + } + return 0 /* Ok */; + } + } + if (encodeURIComponent(packageName) !== packageName) { + return 5 /* NameContainsNonURISafeCharacters */; + } + return 0 /* Ok */; + } + function renderPackageNameValidationFailure(result, typing) { + return typeof result === "object" ? + renderPackageNameValidationFailureWorker(typing, result.result, result.name, result.isScopeName) : + renderPackageNameValidationFailureWorker(typing, result, typing, /*isScopeName*/ false); + } + JsTyping.renderPackageNameValidationFailure = renderPackageNameValidationFailure; + function renderPackageNameValidationFailureWorker(typing, result, name, isScopeName) { + var kind = isScopeName ? "Scope" : "Package"; + switch (result) { + case 1 /* EmptyName */: + return "'" + typing + "':: " + kind + " name '" + name + "' cannot be empty"; + case 2 /* NameTooLong */: + return "'" + typing + "':: " + kind + " name '" + name + "' should be less than " + maxPackageNameLength + " characters"; + case 3 /* NameStartsWithDot */: + return "'" + typing + "':: " + kind + " name '" + name + "' cannot start with '.'"; + case 4 /* NameStartsWithUnderscore */: + return "'" + typing + "':: " + kind + " name '" + name + "' cannot start with '_'"; + case 5 /* NameContainsNonURISafeCharacters */: + return "'" + typing + "':: " + kind + " name '" + name + "' contains non URI safe characters"; + case 0 /* Ok */: + return ts.Debug.fail(); // Shouldn't have called this. + default: + throw ts.Debug.assertNever(result); + } + } + })(JsTyping = ts.JsTyping || (ts.JsTyping = {})); +})(ts || (ts = {})); +var ts; +(function (ts) { + var server; + (function (server) { + var typingsInstaller; + (function (typingsInstaller) { + var nullLog = { + isEnabled: function () { return false; }, + writeLine: ts.noop + }; + function typingToFileName(cachePath, packageName, installTypingHost, log) { + try { + var result = ts.resolveModuleName(packageName, ts.combinePaths(cachePath, "index.d.ts"), { moduleResolution: ts.ModuleResolutionKind.NodeJs }, installTypingHost); + return result.resolvedModule && result.resolvedModule.resolvedFileName; + } + catch (e) { + if (log.isEnabled()) { + log.writeLine("Failed to resolve " + packageName + " in folder '" + cachePath + "': " + e.message); + } + return undefined; + } + } + /*@internal*/ + function installNpmPackages(npmPath, tsVersion, packageNames, install) { + var hasError = false; + for (var remaining = packageNames.length; remaining > 0;) { + var result = getNpmCommandForInstallation(npmPath, tsVersion, packageNames, remaining); + remaining = result.remaining; + hasError = install(result.command) || hasError; + } + return hasError; + } + typingsInstaller.installNpmPackages = installNpmPackages; + /*@internal*/ + function getNpmCommandForInstallation(npmPath, tsVersion, packageNames, remaining) { + var sliceStart = packageNames.length - remaining; + var command, toSlice = remaining; + while (true) { + command = npmPath + " install --ignore-scripts " + (toSlice === packageNames.length ? packageNames : packageNames.slice(sliceStart, sliceStart + toSlice)).join(" ") + " --save-dev --user-agent=\"typesInstaller/" + tsVersion + "\""; + if (command.length < 8000) { + break; + } + toSlice = toSlice - Math.floor(toSlice / 2); + } + return { command: command, remaining: remaining - toSlice }; + } + typingsInstaller.getNpmCommandForInstallation = getNpmCommandForInstallation; + function endsWith(str, suffix, caseSensitive) { + var expectedPos = str.length - suffix.length; + return expectedPos >= 0 && + (str.indexOf(suffix, expectedPos) === expectedPos || + (!caseSensitive && ts.compareStringsCaseInsensitive(str.substr(expectedPos), suffix) === 0 /* EqualTo */)); + } + function isPackageOrBowerJson(fileName, caseSensitive) { + return endsWith(fileName, "/package.json", caseSensitive) || endsWith(fileName, "/bower.json", caseSensitive); + } + function sameFiles(a, b, caseSensitive) { + return a === b || (!caseSensitive && ts.compareStringsCaseInsensitive(a, b) === 0 /* EqualTo */); + } + var ProjectWatcherType; + (function (ProjectWatcherType) { + ProjectWatcherType["FileWatcher"] = "FileWatcher"; + ProjectWatcherType["DirectoryWatcher"] = "DirectoryWatcher"; + })(ProjectWatcherType || (ProjectWatcherType = {})); + var TypingsInstaller = /** @class */ (function () { + function TypingsInstaller(installTypingHost, globalCachePath, safeListPath, typesMapLocation, throttleLimit, log) { + if (log === void 0) { log = nullLog; } + this.installTypingHost = installTypingHost; + this.globalCachePath = globalCachePath; + this.safeListPath = safeListPath; + this.typesMapLocation = typesMapLocation; + this.throttleLimit = throttleLimit; + this.log = log; + this.packageNameToTypingLocation = ts.createMap(); + this.missingTypingsSet = ts.createMap(); + this.knownCachesSet = ts.createMap(); + this.projectWatchers = ts.createMap(); + this.pendingRunRequests = []; + this.installRunCount = 1; + this.inFlightRequestCount = 0; + this.latestDistTag = "latest"; + this.toCanonicalFileName = ts.createGetCanonicalFileName(installTypingHost.useCaseSensitiveFileNames); + this.globalCachePackageJsonPath = ts.combinePaths(globalCachePath, "package.json"); + if (this.log.isEnabled()) { + this.log.writeLine("Global cache location '" + globalCachePath + "', safe file path '" + safeListPath + "', types map path " + typesMapLocation); + } + this.processCacheLocation(this.globalCachePath); + } + TypingsInstaller.prototype.closeProject = function (req) { + this.closeWatchers(req.projectName); + }; + TypingsInstaller.prototype.closeWatchers = function (projectName) { + if (this.log.isEnabled()) { + this.log.writeLine("Closing file watchers for project '" + projectName + "'"); + } + var watchers = this.projectWatchers.get(projectName); + if (!watchers) { + if (this.log.isEnabled()) { + this.log.writeLine("No watchers are registered for project '" + projectName + "'"); + } + return; + } + ts.clearMap(watchers, ts.closeFileWatcher); + this.projectWatchers.delete(projectName); + if (this.log.isEnabled()) { + this.log.writeLine("Closing file watchers for project '" + projectName + "' - done."); + } + }; + TypingsInstaller.prototype.install = function (req) { + var _this = this; + if (this.log.isEnabled()) { + this.log.writeLine("Got install request " + JSON.stringify(req)); + } + // load existing typing information from the cache + if (req.cachePath) { + if (this.log.isEnabled()) { + this.log.writeLine("Request specifies cache path '" + req.cachePath + "', loading cached information..."); + } + this.processCacheLocation(req.cachePath); + } + if (this.safeList === undefined) { + this.initializeSafeList(); + } + var discoverTypingsResult = ts.JsTyping.discoverTypings(this.installTypingHost, this.log.isEnabled() ? (function (s) { return _this.log.writeLine(s); }) : undefined, req.fileNames, req.projectRootPath, this.safeList, this.packageNameToTypingLocation, req.typeAcquisition, req.unresolvedImports, this.typesRegistry); + if (this.log.isEnabled()) { + this.log.writeLine("Finished typings discovery: " + JSON.stringify(discoverTypingsResult)); + } + // start watching files + this.watchFiles(req.projectName, discoverTypingsResult.filesToWatch, req.projectRootPath, req.watchOptions); + // install typings + if (discoverTypingsResult.newTypingNames.length) { + this.installTypings(req, req.cachePath || this.globalCachePath, discoverTypingsResult.cachedTypingPaths, discoverTypingsResult.newTypingNames); + } + else { + this.sendResponse(this.createSetTypings(req, discoverTypingsResult.cachedTypingPaths)); + if (this.log.isEnabled()) { + this.log.writeLine("No new typings were requested as a result of typings discovery"); + } + } + }; + TypingsInstaller.prototype.initializeSafeList = function () { + // Prefer the safe list from the types map if it exists + if (this.typesMapLocation) { + var safeListFromMap = ts.JsTyping.loadTypesMap(this.installTypingHost, this.typesMapLocation); + if (safeListFromMap) { + this.log.writeLine("Loaded safelist from types map file '" + this.typesMapLocation + "'"); + this.safeList = safeListFromMap; + return; + } + this.log.writeLine("Failed to load safelist from types map file '" + this.typesMapLocation + "'"); + } + this.safeList = ts.JsTyping.loadSafeList(this.installTypingHost, this.safeListPath); + }; + TypingsInstaller.prototype.processCacheLocation = function (cacheLocation) { + if (this.log.isEnabled()) { + this.log.writeLine("Processing cache location '" + cacheLocation + "'"); + } + if (this.knownCachesSet.has(cacheLocation)) { + if (this.log.isEnabled()) { + this.log.writeLine("Cache location was already processed..."); + } + return; + } + var packageJson = ts.combinePaths(cacheLocation, "package.json"); + var packageLockJson = ts.combinePaths(cacheLocation, "package-lock.json"); + if (this.log.isEnabled()) { + this.log.writeLine("Trying to find '" + packageJson + "'..."); + } + if (this.installTypingHost.fileExists(packageJson) && this.installTypingHost.fileExists(packageLockJson)) { + var npmConfig = JSON.parse(this.installTypingHost.readFile(packageJson)); // TODO: GH#18217 + var npmLock = JSON.parse(this.installTypingHost.readFile(packageLockJson)); // TODO: GH#18217 + if (this.log.isEnabled()) { + this.log.writeLine("Loaded content of '" + packageJson + "': " + JSON.stringify(npmConfig)); + this.log.writeLine("Loaded content of '" + packageLockJson + "'"); + } + if (npmConfig.devDependencies && npmLock.dependencies) { + for (var key in npmConfig.devDependencies) { + if (!ts.hasProperty(npmLock.dependencies, key)) { + // if package in package.json but not package-lock.json, skip adding to cache so it is reinstalled on next use + continue; + } + // key is @types/ + var packageName = ts.getBaseFileName(key); + if (!packageName) { + continue; + } + var typingFile = typingToFileName(cacheLocation, packageName, this.installTypingHost, this.log); + if (!typingFile) { + this.missingTypingsSet.set(packageName, true); + continue; + } + var existingTypingFile = this.packageNameToTypingLocation.get(packageName); + if (existingTypingFile) { + if (existingTypingFile.typingLocation === typingFile) { + continue; + } + if (this.log.isEnabled()) { + this.log.writeLine("New typing for package " + packageName + " from '" + typingFile + "' conflicts with existing typing file '" + existingTypingFile + "'"); + } + } + if (this.log.isEnabled()) { + this.log.writeLine("Adding entry into typings cache: '" + packageName + "' => '" + typingFile + "'"); + } + var info = ts.getProperty(npmLock.dependencies, key); + var version_1 = info && info.version; + if (!version_1) { + continue; + } + var newTyping = { typingLocation: typingFile, version: new ts.Version(version_1) }; + this.packageNameToTypingLocation.set(packageName, newTyping); + } + } + } + if (this.log.isEnabled()) { + this.log.writeLine("Finished processing cache location '" + cacheLocation + "'"); + } + this.knownCachesSet.set(cacheLocation, true); + }; + TypingsInstaller.prototype.filterTypings = function (typingsToInstall) { + var _this = this; + return ts.mapDefined(typingsToInstall, function (typing) { + var typingKey = ts.mangleScopedPackageName(typing); + if (_this.missingTypingsSet.get(typingKey)) { + if (_this.log.isEnabled()) + _this.log.writeLine("'" + typing + "':: '" + typingKey + "' is in missingTypingsSet - skipping..."); + return undefined; + } + var validationResult = ts.JsTyping.validatePackageName(typing); + if (validationResult !== 0 /* Ok */) { + // add typing name to missing set so we won't process it again + _this.missingTypingsSet.set(typingKey, true); + if (_this.log.isEnabled()) + _this.log.writeLine(ts.JsTyping.renderPackageNameValidationFailure(validationResult, typing)); + return undefined; + } + if (!_this.typesRegistry.has(typingKey)) { + if (_this.log.isEnabled()) + _this.log.writeLine("'" + typing + "':: Entry for package '" + typingKey + "' does not exist in local types registry - skipping..."); + return undefined; + } + if (_this.packageNameToTypingLocation.get(typingKey) && ts.JsTyping.isTypingUpToDate(_this.packageNameToTypingLocation.get(typingKey), _this.typesRegistry.get(typingKey))) { + if (_this.log.isEnabled()) + _this.log.writeLine("'" + typing + "':: '" + typingKey + "' already has an up-to-date typing - skipping..."); + return undefined; + } + return typingKey; + }); + }; + TypingsInstaller.prototype.ensurePackageDirectoryExists = function (directory) { + var npmConfigPath = ts.combinePaths(directory, "package.json"); + if (this.log.isEnabled()) { + this.log.writeLine("Npm config file: " + npmConfigPath); + } + if (!this.installTypingHost.fileExists(npmConfigPath)) { + if (this.log.isEnabled()) { + this.log.writeLine("Npm config file: '" + npmConfigPath + "' is missing, creating new one..."); + } + this.ensureDirectoryExists(directory, this.installTypingHost); + this.installTypingHost.writeFile(npmConfigPath, '{ "private": true }'); + } + }; + TypingsInstaller.prototype.installTypings = function (req, cachePath, currentlyCachedTypings, typingsToInstall) { + var _this = this; + if (this.log.isEnabled()) { + this.log.writeLine("Installing typings " + JSON.stringify(typingsToInstall)); + } + var filteredTypings = this.filterTypings(typingsToInstall); + if (filteredTypings.length === 0) { + if (this.log.isEnabled()) { + this.log.writeLine("All typings are known to be missing or invalid - no need to install more typings"); + } + this.sendResponse(this.createSetTypings(req, currentlyCachedTypings)); + return; + } + this.ensurePackageDirectoryExists(cachePath); + var requestId = this.installRunCount; + this.installRunCount++; + // send progress event + this.sendResponse({ + kind: server.EventBeginInstallTypes, + eventId: requestId, + // qualified explicitly to prevent occasional shadowing + // eslint-disable-next-line @typescript-eslint/no-unnecessary-qualifier + typingsInstallerVersion: ts.version, + projectName: req.projectName + }); + var scopedTypings = filteredTypings.map(typingsName); + this.installTypingsAsync(requestId, scopedTypings, cachePath, function (ok) { + try { + if (!ok) { + if (_this.log.isEnabled()) { + _this.log.writeLine("install request failed, marking packages as missing to prevent repeated requests: " + JSON.stringify(filteredTypings)); + } + for (var _i = 0, filteredTypings_1 = filteredTypings; _i < filteredTypings_1.length; _i++) { + var typing = filteredTypings_1[_i]; + _this.missingTypingsSet.set(typing, true); + } + return; + } + // TODO: watch project directory + if (_this.log.isEnabled()) { + _this.log.writeLine("Installed typings " + JSON.stringify(scopedTypings)); + } + var installedTypingFiles = []; + for (var _a = 0, filteredTypings_2 = filteredTypings; _a < filteredTypings_2.length; _a++) { + var packageName = filteredTypings_2[_a]; + var typingFile = typingToFileName(cachePath, packageName, _this.installTypingHost, _this.log); + if (!typingFile) { + _this.missingTypingsSet.set(packageName, true); + continue; + } + // packageName is guaranteed to exist in typesRegistry by filterTypings + var distTags = _this.typesRegistry.get(packageName); + var newVersion = new ts.Version(distTags["ts" + ts.versionMajorMinor] || distTags[_this.latestDistTag]); + var newTyping = { typingLocation: typingFile, version: newVersion }; + _this.packageNameToTypingLocation.set(packageName, newTyping); + installedTypingFiles.push(typingFile); + } + if (_this.log.isEnabled()) { + _this.log.writeLine("Installed typing files " + JSON.stringify(installedTypingFiles)); + } + _this.sendResponse(_this.createSetTypings(req, currentlyCachedTypings.concat(installedTypingFiles))); + } + finally { + var response = { + kind: server.EventEndInstallTypes, + eventId: requestId, + projectName: req.projectName, + packagesToInstall: scopedTypings, + installSuccess: ok, + // qualified explicitly to prevent occasional shadowing + // eslint-disable-next-line @typescript-eslint/no-unnecessary-qualifier + typingsInstallerVersion: ts.version + }; + _this.sendResponse(response); + } + }); + }; + TypingsInstaller.prototype.ensureDirectoryExists = function (directory, host) { + var directoryName = ts.getDirectoryPath(directory); + if (!host.directoryExists(directoryName)) { + this.ensureDirectoryExists(directoryName, host); + } + if (!host.directoryExists(directory)) { + host.createDirectory(directory); + } + }; + TypingsInstaller.prototype.watchFiles = function (projectName, files, projectRootPath, options) { + var _this = this; + if (!files.length) { + // shut down existing watchers + this.closeWatchers(projectName); + return; + } + var watchers = this.projectWatchers.get(projectName); + var toRemove = ts.createMap(); + if (!watchers) { + watchers = ts.createMap(); + this.projectWatchers.set(projectName, watchers); + } + else { + ts.copyEntries(watchers, toRemove); + } + // handler should be invoked once for the entire set of files since it will trigger full rediscovery of typings + watchers.isInvoked = false; + var isLoggingEnabled = this.log.isEnabled(); + var createProjectWatcher = function (path, projectWatcherType) { + var canonicalPath = _this.toCanonicalFileName(path); + toRemove.delete(canonicalPath); + if (watchers.has(canonicalPath)) { + return; + } + if (isLoggingEnabled) { + _this.log.writeLine(projectWatcherType + ":: Added:: WatchInfo: " + path); + } + var watcher = projectWatcherType === "FileWatcher" /* FileWatcher */ ? + _this.installTypingHost.watchFile(path, function (f, eventKind) { + if (isLoggingEnabled) { + _this.log.writeLine("FileWatcher:: Triggered with " + f + " eventKind: " + ts.FileWatcherEventKind[eventKind] + ":: WatchInfo: " + path + ":: handler is already invoked '" + watchers.isInvoked + "'"); + } + if (!watchers.isInvoked) { + watchers.isInvoked = true; + _this.sendResponse({ projectName: projectName, kind: server.ActionInvalidate }); + } + }, /*pollingInterval*/ 2000, options) : + _this.installTypingHost.watchDirectory(path, function (f) { + if (isLoggingEnabled) { + _this.log.writeLine("DirectoryWatcher:: Triggered with " + f + " :: WatchInfo: " + path + " recursive :: handler is already invoked '" + watchers.isInvoked + "'"); + } + if (watchers.isInvoked || !ts.fileExtensionIs(f, ".json" /* Json */)) { + return; + } + if (isPackageOrBowerJson(f, _this.installTypingHost.useCaseSensitiveFileNames) && + !sameFiles(f, _this.globalCachePackageJsonPath, _this.installTypingHost.useCaseSensitiveFileNames)) { + watchers.isInvoked = true; + _this.sendResponse({ projectName: projectName, kind: server.ActionInvalidate }); + } + }, /*recursive*/ true, options); + watchers.set(canonicalPath, isLoggingEnabled ? { + close: function () { + _this.log.writeLine(projectWatcherType + ":: Closed:: WatchInfo: " + path); + watcher.close(); + } + } : watcher); + }; + // Create watches from list of files + for (var _i = 0, files_1 = files; _i < files_1.length; _i++) { + var file = files_1[_i]; + if (file.endsWith("/package.json") || file.endsWith("/bower.json")) { + // package.json or bower.json exists, watch the file to detect changes and update typings + createProjectWatcher(file, "FileWatcher" /* FileWatcher */); + continue; + } + // path in projectRoot, watch project root + if (ts.containsPath(projectRootPath, file, projectRootPath, !this.installTypingHost.useCaseSensitiveFileNames)) { + var subDirectory = file.indexOf(ts.directorySeparator, projectRootPath.length + 1); + if (subDirectory !== -1) { + // Watch subDirectory + createProjectWatcher(file.substr(0, subDirectory), "DirectoryWatcher" /* DirectoryWatcher */); + } + else { + // Watch the directory itself + createProjectWatcher(file, "DirectoryWatcher" /* DirectoryWatcher */); + } + continue; + } + // path in global cache, watch global cache + if (ts.containsPath(this.globalCachePath, file, projectRootPath, !this.installTypingHost.useCaseSensitiveFileNames)) { + createProjectWatcher(this.globalCachePath, "DirectoryWatcher" /* DirectoryWatcher */); + continue; + } + // watch node_modules or bower_components + createProjectWatcher(file, "DirectoryWatcher" /* DirectoryWatcher */); + } + // Remove unused watches + toRemove.forEach(function (watch, path) { + watch.close(); + watchers.delete(path); + }); + }; + TypingsInstaller.prototype.createSetTypings = function (request, typings) { + return { + projectName: request.projectName, + typeAcquisition: request.typeAcquisition, + compilerOptions: request.compilerOptions, + typings: typings, + unresolvedImports: request.unresolvedImports, + kind: server.ActionSet + }; + }; + TypingsInstaller.prototype.installTypingsAsync = function (requestId, packageNames, cwd, onRequestCompleted) { + this.pendingRunRequests.unshift({ requestId: requestId, packageNames: packageNames, cwd: cwd, onRequestCompleted: onRequestCompleted }); + this.executeWithThrottling(); + }; + TypingsInstaller.prototype.executeWithThrottling = function () { + var _this = this; + var _loop_1 = function () { + this_1.inFlightRequestCount++; + var request = this_1.pendingRunRequests.pop(); + this_1.installWorker(request.requestId, request.packageNames, request.cwd, function (ok) { + _this.inFlightRequestCount--; + request.onRequestCompleted(ok); + _this.executeWithThrottling(); + }); + }; + var this_1 = this; + while (this.inFlightRequestCount < this.throttleLimit && this.pendingRunRequests.length) { + _loop_1(); + } + }; + return TypingsInstaller; + }()); + typingsInstaller.TypingsInstaller = TypingsInstaller; + /* @internal */ + function typingsName(packageName) { + return "@types/" + packageName + "@ts" + ts.versionMajorMinor; + } + typingsInstaller.typingsName = typingsName; + })(typingsInstaller = server.typingsInstaller || (server.typingsInstaller = {})); + })(server = ts.server || (ts.server = {})); +})(ts || (ts = {})); +var ts; +(function (ts) { + var server; + (function (server) { + var typingsInstaller; + (function (typingsInstaller) { + var fs = require("fs"); + var path = require("path"); + var FileLog = (function () { + function FileLog(logFile) { + var _this = this; + this.logFile = logFile; + this.isEnabled = function () { + return typeof _this.logFile === "string"; + }; + this.writeLine = function (text) { + if (typeof _this.logFile !== "string") + return; + try { + fs.appendFileSync(_this.logFile, "[" + server.nowString() + "] " + text + ts.sys.newLine); + } + catch (e) { + _this.logFile = undefined; + } + }; + } + return FileLog; + }()); + function getDefaultNPMLocation(processName, validateDefaultNpmLocation, host) { + if (path.basename(processName).indexOf("node") === 0) { + var npmPath = path.join(path.dirname(process.argv[0]), "npm"); + if (!validateDefaultNpmLocation) { + return npmPath; + } + if (host.fileExists(npmPath)) { + return "\"" + npmPath + "\""; + } + } + return "npm"; + } + function loadTypesRegistryFile(typesRegistryFilePath, host, log) { + if (!host.fileExists(typesRegistryFilePath)) { + if (log.isEnabled()) { + log.writeLine("Types registry file '" + typesRegistryFilePath + "' does not exist"); + } + return ts.createMap(); + } + try { + var content = JSON.parse(host.readFile(typesRegistryFilePath)); + return ts.createMapFromTemplate(content.entries); + } + catch (e) { + if (log.isEnabled()) { + log.writeLine("Error when loading types registry file '" + typesRegistryFilePath + "': " + e.message + ", " + e.stack); + } + return ts.createMap(); + } + } + var typesRegistryPackageName = "types-registry"; + function getTypesRegistryFileLocation(globalTypingsCacheLocation) { + return ts.combinePaths(ts.normalizeSlashes(globalTypingsCacheLocation), "node_modules/" + typesRegistryPackageName + "/index.json"); + } + var NodeTypingsInstaller = (function (_super) { + __extends(NodeTypingsInstaller, _super); + function NodeTypingsInstaller(globalTypingsCacheLocation, typingSafeListLocation, typesMapLocation, npmLocation, validateDefaultNpmLocation, throttleLimit, log) { + var _this = _super.call(this, ts.sys, globalTypingsCacheLocation, typingSafeListLocation ? ts.toPath(typingSafeListLocation, "", ts.createGetCanonicalFileName(ts.sys.useCaseSensitiveFileNames)) : ts.toPath("typingSafeList.json", __dirname, ts.createGetCanonicalFileName(ts.sys.useCaseSensitiveFileNames)), typesMapLocation ? ts.toPath(typesMapLocation, "", ts.createGetCanonicalFileName(ts.sys.useCaseSensitiveFileNames)) : ts.toPath("typesMap.json", __dirname, ts.createGetCanonicalFileName(ts.sys.useCaseSensitiveFileNames)), throttleLimit, log) || this; + _this.npmPath = npmLocation !== undefined ? npmLocation : getDefaultNPMLocation(process.argv[0], validateDefaultNpmLocation, _this.installTypingHost); + if (ts.stringContains(_this.npmPath, " ") && _this.npmPath[0] !== "\"") { + _this.npmPath = "\"" + _this.npmPath + "\""; + } + if (_this.log.isEnabled()) { + _this.log.writeLine("Process id: " + process.pid); + _this.log.writeLine("NPM location: " + _this.npmPath + " (explicit '" + server.Arguments.NpmLocation + "' " + (npmLocation === undefined ? "not " : "") + " provided)"); + _this.log.writeLine("validateDefaultNpmLocation: " + validateDefaultNpmLocation); + } + (_this.nodeExecSync = require("child_process").execSync); + _this.ensurePackageDirectoryExists(globalTypingsCacheLocation); + try { + if (_this.log.isEnabled()) { + _this.log.writeLine("Updating " + typesRegistryPackageName + " npm package..."); + } + _this.execSyncAndLog(_this.npmPath + " install --ignore-scripts " + typesRegistryPackageName + "@" + _this.latestDistTag, { cwd: globalTypingsCacheLocation }); + if (_this.log.isEnabled()) { + _this.log.writeLine("Updated " + typesRegistryPackageName + " npm package"); + } + } + catch (e) { + if (_this.log.isEnabled()) { + _this.log.writeLine("Error updating " + typesRegistryPackageName + " package: " + e.message); + } + _this.delayedInitializationError = { + kind: "event::initializationFailed", + message: e.message + }; + } + _this.typesRegistry = loadTypesRegistryFile(getTypesRegistryFileLocation(globalTypingsCacheLocation), _this.installTypingHost, _this.log); + return _this; + } + NodeTypingsInstaller.prototype.listen = function () { + var _this = this; + process.on("message", function (req) { + if (_this.delayedInitializationError) { + _this.sendResponse(_this.delayedInitializationError); + _this.delayedInitializationError = undefined; + } + switch (req.kind) { + case "discover": + _this.install(req); + break; + case "closeProject": + _this.closeProject(req); + break; + case "typesRegistry": { + var typesRegistry_1 = {}; + _this.typesRegistry.forEach(function (value, key) { + typesRegistry_1[key] = value; + }); + var response = { kind: server.EventTypesRegistry, typesRegistry: typesRegistry_1 }; + _this.sendResponse(response); + break; + } + case "installPackage": { + var fileName = req.fileName, packageName_1 = req.packageName, projectName_1 = req.projectName, projectRootPath = req.projectRootPath; + var cwd = getDirectoryOfPackageJson(fileName, _this.installTypingHost) || projectRootPath; + if (cwd) { + _this.installWorker(-1, [packageName_1], cwd, function (success) { + var message = success ? "Package " + packageName_1 + " installed." : "There was an error installing " + packageName_1 + "."; + var response = { kind: server.ActionPackageInstalled, projectName: projectName_1, success: success, message: message }; + _this.sendResponse(response); + }); + } + else { + var response = { kind: server.ActionPackageInstalled, projectName: projectName_1, success: false, message: "Could not determine a project root path." }; + _this.sendResponse(response); + } + break; + } + default: + ts.Debug.assertNever(req); + } + }); + }; + NodeTypingsInstaller.prototype.sendResponse = function (response) { + if (this.log.isEnabled()) { + this.log.writeLine("Sending response:\n " + JSON.stringify(response)); + } + process.send(response); + if (this.log.isEnabled()) { + this.log.writeLine("Response has been sent."); + } + }; + NodeTypingsInstaller.prototype.installWorker = function (requestId, packageNames, cwd, onRequestCompleted) { + var _this = this; + if (this.log.isEnabled()) { + this.log.writeLine("#" + requestId + " with arguments'" + JSON.stringify(packageNames) + "'."); + } + var start = Date.now(); + var hasError = typingsInstaller.installNpmPackages(this.npmPath, ts.version, packageNames, function (command) { return _this.execSyncAndLog(command, { cwd: cwd }); }); + if (this.log.isEnabled()) { + this.log.writeLine("npm install #" + requestId + " took: " + (Date.now() - start) + " ms"); + } + onRequestCompleted(!hasError); + }; + NodeTypingsInstaller.prototype.execSyncAndLog = function (command, options) { + if (this.log.isEnabled()) { + this.log.writeLine("Exec: " + command); + } + try { + var stdout = this.nodeExecSync(command, __assign(__assign({}, options), { encoding: "utf-8" })); + if (this.log.isEnabled()) { + this.log.writeLine(" Succeeded. stdout:" + indent(ts.sys.newLine, stdout)); + } + return false; + } + catch (error) { + var stdout = error.stdout, stderr = error.stderr; + this.log.writeLine(" Failed. stdout:" + indent(ts.sys.newLine, stdout) + ts.sys.newLine + " stderr:" + indent(ts.sys.newLine, stderr)); + return true; + } + }; + return NodeTypingsInstaller; + }(typingsInstaller.TypingsInstaller)); + typingsInstaller.NodeTypingsInstaller = NodeTypingsInstaller; + function getDirectoryOfPackageJson(fileName, host) { + return ts.forEachAncestorDirectory(ts.getDirectoryPath(fileName), function (directory) { + if (host.fileExists(ts.combinePaths(directory, "package.json"))) { + return directory; + } + }); + } + var logFilePath = server.findArgument(server.Arguments.LogFile); + var globalTypingsCacheLocation = server.findArgument(server.Arguments.GlobalCacheLocation); + var typingSafeListLocation = server.findArgument(server.Arguments.TypingSafeListLocation); + var typesMapLocation = server.findArgument(server.Arguments.TypesMapLocation); + var npmLocation = server.findArgument(server.Arguments.NpmLocation); + var validateDefaultNpmLocation = server.hasArgument(server.Arguments.ValidateDefaultNpmLocation); + var log = new FileLog(logFilePath); + if (log.isEnabled()) { + process.on("uncaughtException", function (e) { + log.writeLine("Unhandled exception: " + e + " at " + e.stack); + }); + } + process.on("disconnect", function () { + if (log.isEnabled()) { + log.writeLine("Parent process has exited, shutting down..."); + } + process.exit(0); + }); + var installer = new NodeTypingsInstaller(globalTypingsCacheLocation, typingSafeListLocation, typesMapLocation, npmLocation, validateDefaultNpmLocation, 5, log); + installer.listen(); + function indent(newline, str) { + return newline + " " + str.replace(/\r?\n/, newline + " "); + } + })(typingsInstaller = server.typingsInstaller || (server.typingsInstaller = {})); + })(server = ts.server || (ts.server = {})); +})(ts || (ts = {})); +//# sourceMappingURL=typingsInstaller.js.map \ No newline at end of file