+++ /dev/null
-"use strict";
-/**
- * @license
- * Copyright 2018 Palantir Technologies, Inc.
- *
- * 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
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-Object.defineProperty(exports, "__esModule", { value: true });
-var tslib_1 = require("tslib");
-var tsutils_1 = require("tsutils");
-var ts = require("typescript");
-var Lint = require("../index");
-var Rule = /** @class */ (function (_super) {
- tslib_1.__extends(Rule, _super);
- function Rule() {
- return _super !== null && _super.apply(this, arguments) || this;
- }
- Rule.prototype.applyWithProgram = function (sourceFile, program) {
- return this.applyWithWalker(new NoInferredEmptyObjectTypeRule(sourceFile, this.ruleName, program.getTypeChecker()));
- };
- /* tslint:disable:object-literal-sort-keys */
- Rule.metadata = {
- ruleName: "no-inferred-empty-object-type",
- description: "Disallow type inference of {} (empty object type) at function and constructor call sites",
- optionsDescription: "Not configurable.",
- options: null,
- optionExamples: [true],
- rationale: Lint.Utils.dedent(templateObject_1 || (templateObject_1 = tslib_1.__makeTemplateObject(["\n Prior to TypeScript 3.4, generic type parameters for functions and constructors are inferred as\n `{}` (the empty object type) by default when no type parameter is explicitly supplied or when\n the compiler cannot infer a more specific type.\n This is often undesirable as the call is meant to be of a more specific type.\n "], ["\n Prior to TypeScript 3.4, generic type parameters for functions and constructors are inferred as\n \\`{}\\` (the empty object type) by default when no type parameter is explicitly supplied or when\n the compiler cannot infer a more specific type.\n This is often undesirable as the call is meant to be of a more specific type.\n "]))),
- type: "functionality",
- typescriptOnly: true,
- requiresTypeInfo: true,
- };
- /* tslint:enable:object-literal-sort-keys */
- Rule.EMPTY_INTERFACE_INSTANCE = "Explicit type parameter needs to be provided to the constructor";
- Rule.EMPTY_INTERFACE_FUNCTION = "Explicit type parameter needs to be provided to the function call";
- return Rule;
-}(Lint.Rules.TypedRule));
-exports.Rule = Rule;
-var NoInferredEmptyObjectTypeRule = /** @class */ (function (_super) {
- tslib_1.__extends(NoInferredEmptyObjectTypeRule, _super);
- function NoInferredEmptyObjectTypeRule(sourceFile, ruleName, checker) {
- var _this = _super.call(this, sourceFile, ruleName, undefined) || this;
- _this.checker = checker;
- return _this;
- }
- NoInferredEmptyObjectTypeRule.prototype.walk = function (sourceFile) {
- var _this = this;
- var cb = function (node) {
- if (node.kind === ts.SyntaxKind.CallExpression) {
- _this.checkCallExpression(node);
- }
- else if (node.kind === ts.SyntaxKind.NewExpression) {
- _this.checkNewExpression(node);
- }
- return ts.forEachChild(node, cb);
- };
- return ts.forEachChild(sourceFile, cb);
- };
- NoInferredEmptyObjectTypeRule.prototype.checkNewExpression = function (node) {
- var _this = this;
- if (node.typeArguments === undefined) {
- var type = this.checker.getTypeAtLocation(node);
- if (tsutils_1.isTypeReference(type) &&
- type.typeArguments !== undefined &&
- type.typeArguments.some(function (a) { return tsutils_1.isObjectType(a) && _this.isEmptyObjectInterface(a); })) {
- this.addFailureAtNode(node, Rule.EMPTY_INTERFACE_INSTANCE);
- }
- }
- };
- NoInferredEmptyObjectTypeRule.prototype.checkCallExpression = function (node) {
- if (node.typeArguments !== undefined) {
- return;
- }
- var callSig = this.checker.getResolvedSignature(node);
- if (callSig === undefined) {
- return;
- }
- var retType = this.checker.getReturnTypeOfSignature(callSig);
- if (tsutils_1.isObjectType(retType) && this.isEmptyObjectInterface(retType)) {
- this.addFailureAtNode(node, Rule.EMPTY_INTERFACE_FUNCTION);
- }
- };
- NoInferredEmptyObjectTypeRule.prototype.isEmptyObjectInterface = function (objType) {
- var _this = this;
- return (tsutils_1.isObjectFlagSet(objType, ts.ObjectFlags.Anonymous) &&
- objType.getProperties().length === 0 &&
- objType.getNumberIndexType() === undefined &&
- objType.getStringIndexType() === undefined &&
- objType.getCallSignatures().every(function (signature) {
- var type = _this.checker.getReturnTypeOfSignature(signature);
- return tsutils_1.isObjectType(type) && _this.isEmptyObjectInterface(type);
- }));
- };
- return NoInferredEmptyObjectTypeRule;
-}(Lint.AbstractWalker));
-var templateObject_1;