--- /dev/null
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const ts = require("typescript");
+const node_1 = require("../typeguard/node");
+const _3_2_1 = require("../typeguard/3.2");
+const type_1 = require("./type");
+function getChildOfKind(node, kind, sourceFile) {
+ for (const child of node.getChildren(sourceFile))
+ if (child.kind === kind)
+ return child;
+}
+exports.getChildOfKind = getChildOfKind;
+function isTokenKind(kind) {
+ return kind >= ts.SyntaxKind.FirstToken && kind <= ts.SyntaxKind.LastToken;
+}
+exports.isTokenKind = isTokenKind;
+function isNodeKind(kind) {
+ return kind >= ts.SyntaxKind.FirstNode;
+}
+exports.isNodeKind = isNodeKind;
+function isAssignmentKind(kind) {
+ return kind >= ts.SyntaxKind.FirstAssignment && kind <= ts.SyntaxKind.LastAssignment;
+}
+exports.isAssignmentKind = isAssignmentKind;
+function isTypeNodeKind(kind) {
+ return kind >= ts.SyntaxKind.FirstTypeNode && kind <= ts.SyntaxKind.LastTypeNode;
+}
+exports.isTypeNodeKind = isTypeNodeKind;
+function isJsDocKind(kind) {
+ return kind >= ts.SyntaxKind.FirstJSDocNode && kind <= ts.SyntaxKind.LastJSDocNode;
+}
+exports.isJsDocKind = isJsDocKind;
+function isKeywordKind(kind) {
+ return kind >= ts.SyntaxKind.FirstKeyword && kind <= ts.SyntaxKind.LastKeyword;
+}
+exports.isKeywordKind = isKeywordKind;
+function isThisParameter(parameter) {
+ return parameter.name.kind === ts.SyntaxKind.Identifier && parameter.name.originalKeywordKind === ts.SyntaxKind.ThisKeyword;
+}
+exports.isThisParameter = isThisParameter;
+function getModifier(node, kind) {
+ if (node.modifiers !== undefined)
+ for (const modifier of node.modifiers)
+ if (modifier.kind === kind)
+ return modifier;
+}
+exports.getModifier = getModifier;
+function hasModifier(modifiers, ...kinds) {
+ if (modifiers === undefined)
+ return false;
+ for (const modifier of modifiers)
+ if (kinds.includes(modifier.kind))
+ return true;
+ return false;
+}
+exports.hasModifier = hasModifier;
+function isParameterProperty(node) {
+ return hasModifier(node.modifiers, ts.SyntaxKind.PublicKeyword, ts.SyntaxKind.ProtectedKeyword, ts.SyntaxKind.PrivateKeyword, ts.SyntaxKind.ReadonlyKeyword);
+}
+exports.isParameterProperty = isParameterProperty;
+function hasAccessModifier(node) {
+ return hasModifier(node.modifiers, ts.SyntaxKind.PublicKeyword, ts.SyntaxKind.ProtectedKeyword, ts.SyntaxKind.PrivateKeyword);
+}
+exports.hasAccessModifier = hasAccessModifier;
+function isFlagSet(obj, flag) {
+ return (obj.flags & flag) !== 0;
+}
+exports.isNodeFlagSet = isFlagSet;
+exports.isTypeFlagSet = isFlagSet;
+exports.isSymbolFlagSet = isFlagSet;
+function isObjectFlagSet(objectType, flag) {
+ return (objectType.objectFlags & flag) !== 0;
+}
+exports.isObjectFlagSet = isObjectFlagSet;
+function isModifierFlagSet(node, flag) {
+ return (ts.getCombinedModifierFlags(node) & flag) !== 0;
+}
+exports.isModifierFlagSet = isModifierFlagSet;
+function getPreviousStatement(statement) {
+ const parent = statement.parent;
+ if (node_1.isBlockLike(parent)) {
+ const index = parent.statements.indexOf(statement);
+ if (index > 0)
+ return parent.statements[index - 1];
+ }
+}
+exports.getPreviousStatement = getPreviousStatement;
+function getNextStatement(statement) {
+ const parent = statement.parent;
+ if (node_1.isBlockLike(parent)) {
+ const index = parent.statements.indexOf(statement);
+ if (index < parent.statements.length)
+ return parent.statements[index + 1];
+ }
+}
+exports.getNextStatement = getNextStatement;
+function getPreviousToken(node, sourceFile) {
+ let parent = node.parent;
+ while (parent !== undefined && parent.pos === node.pos)
+ parent = parent.parent;
+ if (parent === undefined)
+ return;
+ outer: while (true) {
+ const children = parent.getChildren(sourceFile);
+ for (let i = children.length - 1; i >= 0; --i) {
+ const child = children[i];
+ if (child.pos < node.pos && child.kind !== ts.SyntaxKind.JSDocComment) {
+ if (isTokenKind(child.kind))
+ return child;
+ parent = child;
+ continue outer;
+ }
+ }
+ return;
+ }
+}
+exports.getPreviousToken = getPreviousToken;
+function getNextToken(node, sourceFile = node.getSourceFile()) {
+ if (node.kind === ts.SyntaxKind.SourceFile || node.kind === ts.SyntaxKind.EndOfFileToken)
+ return;
+ const end = node.end;
+ node = node.parent;
+ while (node.end === end) {
+ if (node.parent === undefined)
+ return node.endOfFileToken;
+ node = node.parent;
+ }
+ return getTokenAtPositionWorker(node, end, sourceFile, false);
+}
+exports.getNextToken = getNextToken;
+function getTokenAtPosition(parent, pos, sourceFile, allowJsDoc) {
+ if (pos < parent.pos || pos >= parent.end)
+ return;
+ if (isTokenKind(parent.kind))
+ return parent;
+ if (sourceFile === undefined)
+ sourceFile = parent.getSourceFile();
+ return getTokenAtPositionWorker(parent, pos, sourceFile, allowJsDoc === true);
+}
+exports.getTokenAtPosition = getTokenAtPosition;
+function getTokenAtPositionWorker(node, pos, sourceFile, allowJsDoc) {
+ outer: while (true) {
+ for (const child of node.getChildren(sourceFile)) {
+ if (child.end > pos && (allowJsDoc || child.kind !== ts.SyntaxKind.JSDocComment)) {
+ if (isTokenKind(child.kind))
+ return child;
+ node = child;
+ continue outer;
+ }
+ }
+ return;
+ }
+}
+function getCommentAtPosition(sourceFile, pos, parent = sourceFile) {
+ const token = getTokenAtPosition(parent, pos, sourceFile);
+ if (token === undefined || token.kind === ts.SyntaxKind.JsxText || pos >= token.end - (ts.tokenToString(token.kind) || '').length)
+ return;
+ const startPos = token.pos === 0
+ ? (ts.getShebang(sourceFile.text) || '').length
+ : token.pos;
+ return startPos !== 0 && ts.forEachTrailingCommentRange(sourceFile.text, startPos, commentAtPositionCallback, pos) ||
+ ts.forEachLeadingCommentRange(sourceFile.text, startPos, commentAtPositionCallback, pos);
+}
+exports.getCommentAtPosition = getCommentAtPosition;
+function commentAtPositionCallback(pos, end, kind, _nl, at) {
+ return at >= pos && at < end ? { pos, end, kind } : undefined;
+}
+function isPositionInComment(sourceFile, pos, parent) {
+ return getCommentAtPosition(sourceFile, pos, parent) !== undefined;
+}
+exports.isPositionInComment = isPositionInComment;
+function commentText(sourceText, comment) {
+ return sourceText.substring(comment.pos + 2, comment.kind === ts.SyntaxKind.SingleLineCommentTrivia ? comment.end : comment.end - 2);
+}
+exports.commentText = commentText;
+function getWrappedNodeAtPosition(wrap, pos) {
+ if (wrap.node.pos > pos || wrap.node.end <= pos)
+ return;
+ outer: while (true) {
+ for (const child of wrap.children) {
+ if (child.node.pos > pos)
+ return wrap;
+ if (child.node.end > pos) {
+ wrap = child;
+ continue outer;
+ }
+ }
+ return wrap;
+ }
+}
+exports.getWrappedNodeAtPosition = getWrappedNodeAtPosition;
+function getPropertyName(propertyName) {
+ if (propertyName.kind === ts.SyntaxKind.ComputedPropertyName) {
+ if (!node_1.isLiteralExpression(propertyName.expression))
+ return;
+ if (_3_2_1.isBigIntLiteral(propertyName.expression))
+ return propertyName.expression.text.slice(0, -1);
+ return propertyName.expression.text;
+ }
+ return propertyName.text;
+}
+exports.getPropertyName = getPropertyName;
+function forEachDestructuringIdentifier(pattern, fn) {
+ for (const element of pattern.elements) {
+ if (element.kind !== ts.SyntaxKind.BindingElement)
+ continue;
+ let result;
+ if (element.name.kind === ts.SyntaxKind.Identifier) {
+ result = fn(element);
+ }
+ else {
+ result = forEachDestructuringIdentifier(element.name, fn);
+ }
+ if (result)
+ return result;
+ }
+}
+exports.forEachDestructuringIdentifier = forEachDestructuringIdentifier;
+function forEachDeclaredVariable(declarationList, cb) {
+ for (const declaration of declarationList.declarations) {
+ let result;
+ if (declaration.name.kind === ts.SyntaxKind.Identifier) {
+ result = cb(declaration);
+ }
+ else {
+ result = forEachDestructuringIdentifier(declaration.name, cb);
+ }
+ if (result)
+ return result;
+ }
+}
+exports.forEachDeclaredVariable = forEachDeclaredVariable;
+var VariableDeclarationKind;
+(function (VariableDeclarationKind) {
+ VariableDeclarationKind[VariableDeclarationKind["Var"] = 0] = "Var";
+ VariableDeclarationKind[VariableDeclarationKind["Let"] = 1] = "Let";
+ VariableDeclarationKind[VariableDeclarationKind["Const"] = 2] = "Const";
+})(VariableDeclarationKind = exports.VariableDeclarationKind || (exports.VariableDeclarationKind = {}));
+function getVariableDeclarationKind(declarationList) {
+ if (declarationList.flags & ts.NodeFlags.Let)
+ return 1;
+ if (declarationList.flags & ts.NodeFlags.Const)
+ return 2;
+ return 0;
+}
+exports.getVariableDeclarationKind = getVariableDeclarationKind;
+function isBlockScopedVariableDeclarationList(declarationList) {
+ return (declarationList.flags & ts.NodeFlags.BlockScoped) !== 0;
+}
+exports.isBlockScopedVariableDeclarationList = isBlockScopedVariableDeclarationList;
+function isBlockScopedVariableDeclaration(declaration) {
+ const parent = declaration.parent;
+ return parent.kind === ts.SyntaxKind.CatchClause ||
+ isBlockScopedVariableDeclarationList(parent);
+}
+exports.isBlockScopedVariableDeclaration = isBlockScopedVariableDeclaration;
+function isBlockScopedDeclarationStatement(statement) {
+ switch (statement.kind) {
+ case ts.SyntaxKind.VariableStatement:
+ return isBlockScopedVariableDeclarationList(statement.declarationList);
+ case ts.SyntaxKind.ClassDeclaration:
+ case ts.SyntaxKind.EnumDeclaration:
+ case ts.SyntaxKind.InterfaceDeclaration:
+ case ts.SyntaxKind.TypeAliasDeclaration:
+ return true;
+ default:
+ return false;
+ }
+}
+exports.isBlockScopedDeclarationStatement = isBlockScopedDeclarationStatement;
+function isInSingleStatementContext(statement) {
+ switch (statement.parent.kind) {
+ case ts.SyntaxKind.ForStatement:
+ case ts.SyntaxKind.ForInStatement:
+ case ts.SyntaxKind.ForOfStatement:
+ case ts.SyntaxKind.WhileStatement:
+ case ts.SyntaxKind.DoStatement:
+ case ts.SyntaxKind.IfStatement:
+ case ts.SyntaxKind.WithStatement:
+ case ts.SyntaxKind.LabeledStatement:
+ return true;
+ default:
+ return false;
+ }
+}
+exports.isInSingleStatementContext = isInSingleStatementContext;
+var ScopeBoundary;
+(function (ScopeBoundary) {
+ ScopeBoundary[ScopeBoundary["None"] = 0] = "None";
+ ScopeBoundary[ScopeBoundary["Function"] = 1] = "Function";
+ ScopeBoundary[ScopeBoundary["Block"] = 2] = "Block";
+ ScopeBoundary[ScopeBoundary["Type"] = 4] = "Type";
+ ScopeBoundary[ScopeBoundary["ConditionalType"] = 8] = "ConditionalType";
+})(ScopeBoundary = exports.ScopeBoundary || (exports.ScopeBoundary = {}));
+var ScopeBoundarySelector;
+(function (ScopeBoundarySelector) {
+ ScopeBoundarySelector[ScopeBoundarySelector["Function"] = 1] = "Function";
+ ScopeBoundarySelector[ScopeBoundarySelector["Block"] = 3] = "Block";
+ ScopeBoundarySelector[ScopeBoundarySelector["Type"] = 7] = "Type";
+ ScopeBoundarySelector[ScopeBoundarySelector["InferType"] = 8] = "InferType";
+})(ScopeBoundarySelector = exports.ScopeBoundarySelector || (exports.ScopeBoundarySelector = {}));
+function isScopeBoundary(node) {
+ return isFunctionScopeBoundary(node) || isBlockScopeBoundary(node) || isTypeScopeBoundary(node);
+}
+exports.isScopeBoundary = isScopeBoundary;
+function isTypeScopeBoundary(node) {
+ switch (node.kind) {
+ case ts.SyntaxKind.InterfaceDeclaration:
+ case ts.SyntaxKind.TypeAliasDeclaration:
+ case ts.SyntaxKind.MappedType:
+ return 4;
+ case ts.SyntaxKind.ConditionalType:
+ return 8;
+ default:
+ return 0;
+ }
+}
+exports.isTypeScopeBoundary = isTypeScopeBoundary;
+function isFunctionScopeBoundary(node) {
+ switch (node.kind) {
+ case ts.SyntaxKind.FunctionExpression:
+ case ts.SyntaxKind.ArrowFunction:
+ case ts.SyntaxKind.Constructor:
+ case ts.SyntaxKind.ModuleDeclaration:
+ case ts.SyntaxKind.ClassDeclaration:
+ case ts.SyntaxKind.ClassExpression:
+ case ts.SyntaxKind.EnumDeclaration:
+ case ts.SyntaxKind.MethodDeclaration:
+ case ts.SyntaxKind.FunctionDeclaration:
+ case ts.SyntaxKind.GetAccessor:
+ case ts.SyntaxKind.SetAccessor:
+ case ts.SyntaxKind.MethodSignature:
+ case ts.SyntaxKind.CallSignature:
+ case ts.SyntaxKind.ConstructSignature:
+ case ts.SyntaxKind.ConstructorType:
+ case ts.SyntaxKind.FunctionType:
+ return 1;
+ case ts.SyntaxKind.SourceFile:
+ return ts.isExternalModule(node) ? 1 : 0;
+ default:
+ return 0;
+ }
+}
+exports.isFunctionScopeBoundary = isFunctionScopeBoundary;
+function isBlockScopeBoundary(node) {
+ switch (node.kind) {
+ case ts.SyntaxKind.Block:
+ const parent = node.parent;
+ return parent.kind !== ts.SyntaxKind.CatchClause &&
+ (parent.kind === ts.SyntaxKind.SourceFile ||
+ !isFunctionScopeBoundary(parent))
+ ? 2
+ : 0;
+ case ts.SyntaxKind.ForStatement:
+ case ts.SyntaxKind.ForInStatement:
+ case ts.SyntaxKind.ForOfStatement:
+ case ts.SyntaxKind.CaseBlock:
+ case ts.SyntaxKind.CatchClause:
+ case ts.SyntaxKind.WithStatement:
+ return 2;
+ default:
+ return 0;
+ }
+}
+exports.isBlockScopeBoundary = isBlockScopeBoundary;
+function hasOwnThisReference(node) {
+ switch (node.kind) {
+ case ts.SyntaxKind.ClassDeclaration:
+ case ts.SyntaxKind.ClassExpression:
+ case ts.SyntaxKind.FunctionExpression:
+ return true;
+ case ts.SyntaxKind.FunctionDeclaration:
+ return node.body !== undefined;
+ case ts.SyntaxKind.MethodDeclaration:
+ case ts.SyntaxKind.GetAccessor:
+ case ts.SyntaxKind.SetAccessor:
+ return node.parent.kind === ts.SyntaxKind.ObjectLiteralExpression;
+ default:
+ return false;
+ }
+}
+exports.hasOwnThisReference = hasOwnThisReference;
+function isFunctionWithBody(node) {
+ switch (node.kind) {
+ case ts.SyntaxKind.GetAccessor:
+ case ts.SyntaxKind.SetAccessor:
+ case ts.SyntaxKind.FunctionDeclaration:
+ case ts.SyntaxKind.MethodDeclaration:
+ case ts.SyntaxKind.Constructor:
+ return node.body !== undefined;
+ case ts.SyntaxKind.FunctionExpression:
+ case ts.SyntaxKind.ArrowFunction:
+ return true;
+ default:
+ return false;
+ }
+}
+exports.isFunctionWithBody = isFunctionWithBody;
+function forEachToken(node, cb, sourceFile = node.getSourceFile()) {
+ return (function iterate(child) {
+ if (isTokenKind(child.kind))
+ return cb(child);
+ if (child.kind !== ts.SyntaxKind.JSDocComment)
+ return child.getChildren(sourceFile).forEach(iterate);
+ })(node);
+}
+exports.forEachToken = forEachToken;
+function forEachTokenWithTrivia(node, cb, sourceFile = node.getSourceFile()) {
+ const fullText = sourceFile.text;
+ const scanner = ts.createScanner(sourceFile.languageVersion, false, sourceFile.languageVariant, fullText);
+ return forEachToken(node, (token) => {
+ const tokenStart = token.kind === ts.SyntaxKind.JsxText || token.pos === token.end ? token.pos : token.getStart(sourceFile);
+ if (tokenStart !== token.pos) {
+ scanner.setTextPos(token.pos);
+ let kind = scanner.scan();
+ let pos = scanner.getTokenPos();
+ while (pos < tokenStart) {
+ const textPos = scanner.getTextPos();
+ cb(fullText, kind, { pos, end: textPos }, token.parent);
+ if (textPos === tokenStart)
+ break;
+ kind = scanner.scan();
+ pos = scanner.getTokenPos();
+ }
+ }
+ return cb(fullText, token.kind, { end: token.end, pos: tokenStart }, token.parent);
+ }, sourceFile);
+}
+exports.forEachTokenWithTrivia = forEachTokenWithTrivia;
+function forEachComment(node, cb, sourceFile = node.getSourceFile()) {
+ const fullText = sourceFile.text;
+ const notJsx = sourceFile.languageVariant !== ts.LanguageVariant.JSX;
+ return forEachToken(node, (token) => {
+ if (token.pos === token.end)
+ return;
+ if (token.kind !== ts.SyntaxKind.JsxText)
+ ts.forEachLeadingCommentRange(fullText, token.pos === 0 ? (ts.getShebang(fullText) || '').length : token.pos, commentCallback);
+ if (notJsx || canHaveTrailingTrivia(token))
+ return ts.forEachTrailingCommentRange(fullText, token.end, commentCallback);
+ }, sourceFile);
+ function commentCallback(pos, end, kind) {
+ cb(fullText, { pos, end, kind });
+ }
+}
+exports.forEachComment = forEachComment;
+function canHaveTrailingTrivia(token) {
+ switch (token.kind) {
+ case ts.SyntaxKind.CloseBraceToken:
+ return token.parent.kind !== ts.SyntaxKind.JsxExpression || !isJsxElementOrFragment(token.parent.parent);
+ case ts.SyntaxKind.GreaterThanToken:
+ switch (token.parent.kind) {
+ case ts.SyntaxKind.JsxOpeningElement:
+ return token.end !== token.parent.end;
+ case ts.SyntaxKind.JsxOpeningFragment:
+ return false;
+ case ts.SyntaxKind.JsxSelfClosingElement:
+ return token.end !== token.parent.end ||
+ !isJsxElementOrFragment(token.parent.parent);
+ case ts.SyntaxKind.JsxClosingElement:
+ case ts.SyntaxKind.JsxClosingFragment:
+ return !isJsxElementOrFragment(token.parent.parent.parent);
+ }
+ }
+ return true;
+}
+function isJsxElementOrFragment(node) {
+ return node.kind === ts.SyntaxKind.JsxElement || node.kind === ts.SyntaxKind.JsxFragment;
+}
+function getLineRanges(sourceFile) {
+ const lineStarts = sourceFile.getLineStarts();
+ const result = [];
+ const length = lineStarts.length;
+ const sourceText = sourceFile.text;
+ let pos = 0;
+ for (let i = 1; i < length; ++i) {
+ const end = lineStarts[i];
+ let lineEnd = end;
+ for (; lineEnd > pos; --lineEnd)
+ if (!ts.isLineBreak(sourceText.charCodeAt(lineEnd - 1)))
+ break;
+ result.push({
+ pos,
+ end,
+ contentLength: lineEnd - pos,
+ });
+ pos = end;
+ }
+ result.push({
+ pos,
+ end: sourceFile.end,
+ contentLength: sourceFile.end - pos,
+ });
+ return result;
+}
+exports.getLineRanges = getLineRanges;
+function getLineBreakStyle(sourceFile) {
+ const lineStarts = sourceFile.getLineStarts();
+ return lineStarts.length === 1 || lineStarts[1] < 2 || sourceFile.text[lineStarts[1] - 2] !== '\r'
+ ? '\n'
+ : '\r\n';
+}
+exports.getLineBreakStyle = getLineBreakStyle;
+let cachedScanner;
+function scanToken(text, languageVersion) {
+ if (cachedScanner === undefined) {
+ cachedScanner = ts.createScanner(languageVersion, false, undefined, text);
+ }
+ else {
+ cachedScanner.setScriptTarget(languageVersion);
+ cachedScanner.setText(text);
+ }
+ cachedScanner.scan();
+ return cachedScanner;
+}
+function isValidIdentifier(text, languageVersion = ts.ScriptTarget.Latest) {
+ const scan = scanToken(text, languageVersion);
+ return scan.isIdentifier() && scan.getTextPos() === text.length && scan.getTokenPos() === 0;
+}
+exports.isValidIdentifier = isValidIdentifier;
+function charSize(ch) {
+ return ch >= 0x10000 ? 2 : 1;
+}
+function isValidPropertyAccess(text, languageVersion = ts.ScriptTarget.Latest) {
+ if (text.length === 0)
+ return false;
+ let ch = text.codePointAt(0);
+ if (!ts.isIdentifierStart(ch, languageVersion))
+ return false;
+ for (let i = charSize(ch); i < text.length; i += charSize(ch)) {
+ ch = text.codePointAt(i);
+ if (!ts.isIdentifierPart(ch, languageVersion))
+ return false;
+ }
+ return true;
+}
+exports.isValidPropertyAccess = isValidPropertyAccess;
+function isValidPropertyName(text, languageVersion = ts.ScriptTarget.Latest) {
+ if (isValidPropertyAccess(text, languageVersion))
+ return true;
+ const scan = scanToken(text, languageVersion);
+ return scan.getTextPos() === text.length &&
+ scan.getToken() === ts.SyntaxKind.NumericLiteral && scan.getTokenValue() === text;
+}
+exports.isValidPropertyName = isValidPropertyName;
+function isValidNumericLiteral(text, languageVersion = ts.ScriptTarget.Latest) {
+ const scan = scanToken(text, languageVersion);
+ return scan.getToken() === ts.SyntaxKind.NumericLiteral && scan.getTextPos() === text.length && scan.getTokenPos() === 0;
+}
+exports.isValidNumericLiteral = isValidNumericLiteral;
+function isValidJsxIdentifier(text, languageVersion = ts.ScriptTarget.Latest) {
+ if (text.length === 0)
+ return false;
+ let ch = text.codePointAt(0);
+ if (!ts.isIdentifierStart(ch, languageVersion))
+ return false;
+ for (let i = charSize(ch); i < text.length; i += charSize(ch)) {
+ ch = text.codePointAt(i);
+ if (!ts.isIdentifierPart(ch, languageVersion) && ch !== 45)
+ return false;
+ }
+ return true;
+}
+exports.isValidJsxIdentifier = isValidJsxIdentifier;
+function isNumericPropertyName(name) {
+ return String(+name) === name;
+}
+exports.isNumericPropertyName = isNumericPropertyName;
+function isSameLine(sourceFile, pos1, pos2) {
+ return ts.getLineAndCharacterOfPosition(sourceFile, pos1).line === ts.getLineAndCharacterOfPosition(sourceFile, pos2).line;
+}
+exports.isSameLine = isSameLine;
+var SideEffectOptions;
+(function (SideEffectOptions) {
+ SideEffectOptions[SideEffectOptions["None"] = 0] = "None";
+ SideEffectOptions[SideEffectOptions["TaggedTemplate"] = 1] = "TaggedTemplate";
+ SideEffectOptions[SideEffectOptions["Constructor"] = 2] = "Constructor";
+ SideEffectOptions[SideEffectOptions["JsxElement"] = 4] = "JsxElement";
+})(SideEffectOptions = exports.SideEffectOptions || (exports.SideEffectOptions = {}));
+function hasSideEffects(node, options) {
+ switch (node.kind) {
+ case ts.SyntaxKind.CallExpression:
+ case ts.SyntaxKind.PostfixUnaryExpression:
+ case ts.SyntaxKind.AwaitExpression:
+ case ts.SyntaxKind.YieldExpression:
+ case ts.SyntaxKind.DeleteExpression:
+ return true;
+ case ts.SyntaxKind.TypeAssertionExpression:
+ case ts.SyntaxKind.AsExpression:
+ case ts.SyntaxKind.ParenthesizedExpression:
+ case ts.SyntaxKind.NonNullExpression:
+ case ts.SyntaxKind.VoidExpression:
+ case ts.SyntaxKind.TypeOfExpression:
+ case ts.SyntaxKind.PropertyAccessExpression:
+ case ts.SyntaxKind.SpreadElement:
+ case ts.SyntaxKind.PartiallyEmittedExpression:
+ return hasSideEffects(node.expression, options);
+ case ts.SyntaxKind.BinaryExpression:
+ return isAssignmentKind(node.operatorToken.kind) ||
+ hasSideEffects(node.left, options) ||
+ hasSideEffects(node.right, options);
+ case ts.SyntaxKind.PrefixUnaryExpression:
+ switch (node.operator) {
+ case ts.SyntaxKind.PlusPlusToken:
+ case ts.SyntaxKind.MinusMinusToken:
+ return true;
+ default:
+ return hasSideEffects(node.operand, options);
+ }
+ case ts.SyntaxKind.ElementAccessExpression:
+ return hasSideEffects(node.expression, options) ||
+ node.argumentExpression !== undefined &&
+ hasSideEffects(node.argumentExpression, options);
+ case ts.SyntaxKind.ConditionalExpression:
+ return hasSideEffects(node.condition, options) ||
+ hasSideEffects(node.whenTrue, options) ||
+ hasSideEffects(node.whenFalse, options);
+ case ts.SyntaxKind.NewExpression:
+ if (options & 2 || hasSideEffects(node.expression, options))
+ return true;
+ if (node.arguments !== undefined)
+ for (const child of node.arguments)
+ if (hasSideEffects(child, options))
+ return true;
+ return false;
+ case ts.SyntaxKind.TaggedTemplateExpression:
+ if (options & 1 || hasSideEffects(node.tag, options))
+ return true;
+ if (node.template.kind === ts.SyntaxKind.NoSubstitutionTemplateLiteral)
+ return false;
+ node = node.template;
+ case ts.SyntaxKind.TemplateExpression:
+ for (const child of node.templateSpans)
+ if (hasSideEffects(child.expression, options))
+ return true;
+ return false;
+ case ts.SyntaxKind.ClassExpression:
+ return classExpressionHasSideEffects(node, options);
+ case ts.SyntaxKind.ArrayLiteralExpression:
+ for (const child of node.elements)
+ if (hasSideEffects(child, options))
+ return true;
+ return false;
+ case ts.SyntaxKind.ObjectLiteralExpression:
+ for (const child of node.properties) {
+ if (child.name !== undefined && child.name.kind === ts.SyntaxKind.ComputedPropertyName &&
+ hasSideEffects(child.name.expression, options))
+ return true;
+ switch (child.kind) {
+ case ts.SyntaxKind.PropertyAssignment:
+ if (hasSideEffects(child.initializer, options))
+ return true;
+ break;
+ case ts.SyntaxKind.SpreadAssignment:
+ if (hasSideEffects(child.expression, options))
+ return true;
+ }
+ }
+ return false;
+ case ts.SyntaxKind.JsxExpression:
+ return node.expression !== undefined && hasSideEffects(node.expression, options);
+ case ts.SyntaxKind.JsxElement:
+ case ts.SyntaxKind.JsxFragment:
+ for (const child of node.children)
+ if (child.kind !== ts.SyntaxKind.JsxText && hasSideEffects(child, options))
+ return true;
+ if (node.kind === ts.SyntaxKind.JsxFragment)
+ return false;
+ node = node.openingElement;
+ case ts.SyntaxKind.JsxSelfClosingElement:
+ case ts.SyntaxKind.JsxOpeningElement:
+ if (options & 4)
+ return true;
+ for (const child of node.attributes.properties) {
+ if (child.kind === ts.SyntaxKind.JsxSpreadAttribute) {
+ if (hasSideEffects(child.expression, options))
+ return true;
+ }
+ else if (child.initializer !== undefined && hasSideEffects(child.initializer, options)) {
+ return true;
+ }
+ }
+ return false;
+ case ts.SyntaxKind.CommaListExpression:
+ for (const child of node.elements)
+ if (hasSideEffects(child, options))
+ return true;
+ return false;
+ default:
+ return false;
+ }
+}
+exports.hasSideEffects = hasSideEffects;
+function classExpressionHasSideEffects(node, options) {
+ if (node.heritageClauses !== undefined && node.heritageClauses[0].token === ts.SyntaxKind.ExtendsKeyword)
+ for (const base of node.heritageClauses[0].types)
+ if (hasSideEffects(base.expression, options))
+ return true;
+ for (const child of node.members)
+ if (child.name !== undefined && child.name.kind === ts.SyntaxKind.ComputedPropertyName &&
+ hasSideEffects(child.name.expression, options) ||
+ node_1.isPropertyDeclaration(child) && child.initializer !== undefined &&
+ hasSideEffects(child.initializer, options))
+ return true;
+ return false;
+}
+function getDeclarationOfBindingElement(node) {
+ let parent = node.parent.parent;
+ while (parent.kind === ts.SyntaxKind.BindingElement)
+ parent = parent.parent.parent;
+ return parent;
+}
+exports.getDeclarationOfBindingElement = getDeclarationOfBindingElement;
+function isExpressionValueUsed(node) {
+ while (true) {
+ const parent = node.parent;
+ switch (parent.kind) {
+ case ts.SyntaxKind.CallExpression:
+ case ts.SyntaxKind.NewExpression:
+ case ts.SyntaxKind.ElementAccessExpression:
+ case ts.SyntaxKind.WhileStatement:
+ case ts.SyntaxKind.DoStatement:
+ case ts.SyntaxKind.WithStatement:
+ case ts.SyntaxKind.ThrowStatement:
+ case ts.SyntaxKind.ReturnStatement:
+ case ts.SyntaxKind.JsxExpression:
+ case ts.SyntaxKind.JsxSpreadAttribute:
+ case ts.SyntaxKind.JsxElement:
+ case ts.SyntaxKind.JsxFragment:
+ case ts.SyntaxKind.JsxSelfClosingElement:
+ case ts.SyntaxKind.ComputedPropertyName:
+ case ts.SyntaxKind.ArrowFunction:
+ case ts.SyntaxKind.ExportSpecifier:
+ case ts.SyntaxKind.ExportAssignment:
+ case ts.SyntaxKind.ImportDeclaration:
+ case ts.SyntaxKind.ExternalModuleReference:
+ case ts.SyntaxKind.Decorator:
+ case ts.SyntaxKind.TaggedTemplateExpression:
+ case ts.SyntaxKind.TemplateSpan:
+ case ts.SyntaxKind.ExpressionWithTypeArguments:
+ case ts.SyntaxKind.TypeOfExpression:
+ case ts.SyntaxKind.AwaitExpression:
+ case ts.SyntaxKind.YieldExpression:
+ case ts.SyntaxKind.LiteralType:
+ case ts.SyntaxKind.JsxAttributes:
+ case ts.SyntaxKind.JsxOpeningElement:
+ case ts.SyntaxKind.JsxClosingElement:
+ case ts.SyntaxKind.IfStatement:
+ case ts.SyntaxKind.CaseClause:
+ case ts.SyntaxKind.SwitchStatement:
+ return true;
+ case ts.SyntaxKind.PropertyAccessExpression:
+ return parent.expression === node;
+ case ts.SyntaxKind.QualifiedName:
+ return parent.left === node;
+ case ts.SyntaxKind.ShorthandPropertyAssignment:
+ return parent.objectAssignmentInitializer === node ||
+ !isInDestructuringAssignment(parent);
+ case ts.SyntaxKind.PropertyAssignment:
+ return parent.initializer === node && !isInDestructuringAssignment(parent);
+ case ts.SyntaxKind.SpreadAssignment:
+ case ts.SyntaxKind.SpreadElement:
+ case ts.SyntaxKind.ArrayLiteralExpression:
+ return !isInDestructuringAssignment(parent);
+ case ts.SyntaxKind.ParenthesizedExpression:
+ case ts.SyntaxKind.AsExpression:
+ case ts.SyntaxKind.TypeAssertionExpression:
+ case ts.SyntaxKind.PostfixUnaryExpression:
+ case ts.SyntaxKind.PrefixUnaryExpression:
+ case ts.SyntaxKind.NonNullExpression:
+ node = parent;
+ break;
+ case ts.SyntaxKind.ForStatement:
+ return parent.condition === node;
+ case ts.SyntaxKind.ForInStatement:
+ case ts.SyntaxKind.ForOfStatement:
+ return parent.expression === node;
+ case ts.SyntaxKind.ConditionalExpression:
+ if (parent.condition === node)
+ return true;
+ node = parent;
+ break;
+ case ts.SyntaxKind.PropertyDeclaration:
+ case ts.SyntaxKind.BindingElement:
+ case ts.SyntaxKind.VariableDeclaration:
+ case ts.SyntaxKind.Parameter:
+ case ts.SyntaxKind.EnumMember:
+ return parent.initializer === node;
+ case ts.SyntaxKind.ImportEqualsDeclaration:
+ return parent.moduleReference === node;
+ case ts.SyntaxKind.CommaListExpression:
+ if (parent.elements[parent.elements.length - 1] !== node)
+ return false;
+ node = parent;
+ break;
+ case ts.SyntaxKind.BinaryExpression:
+ if (parent.right === node) {
+ if (parent.operatorToken.kind === ts.SyntaxKind.CommaToken) {
+ node = parent;
+ break;
+ }
+ return true;
+ }
+ switch (parent.operatorToken.kind) {
+ case ts.SyntaxKind.CommaToken:
+ case ts.SyntaxKind.EqualsToken:
+ return false;
+ case ts.SyntaxKind.EqualsEqualsEqualsToken:
+ case ts.SyntaxKind.EqualsEqualsToken:
+ case ts.SyntaxKind.ExclamationEqualsEqualsToken:
+ case ts.SyntaxKind.ExclamationEqualsToken:
+ case ts.SyntaxKind.InstanceOfKeyword:
+ case ts.SyntaxKind.PlusToken:
+ case ts.SyntaxKind.MinusToken:
+ case ts.SyntaxKind.AsteriskToken:
+ case ts.SyntaxKind.SlashToken:
+ case ts.SyntaxKind.PercentToken:
+ case ts.SyntaxKind.AsteriskAsteriskToken:
+ case ts.SyntaxKind.GreaterThanToken:
+ case ts.SyntaxKind.GreaterThanGreaterThanToken:
+ case ts.SyntaxKind.GreaterThanGreaterThanGreaterThanToken:
+ case ts.SyntaxKind.GreaterThanEqualsToken:
+ case ts.SyntaxKind.LessThanToken:
+ case ts.SyntaxKind.LessThanLessThanToken:
+ case ts.SyntaxKind.LessThanEqualsToken:
+ case ts.SyntaxKind.AmpersandToken:
+ case ts.SyntaxKind.BarToken:
+ case ts.SyntaxKind.CaretToken:
+ case ts.SyntaxKind.BarBarToken:
+ case ts.SyntaxKind.AmpersandAmpersandToken:
+ case ts.SyntaxKind.InKeyword:
+ return true;
+ default:
+ node = parent;
+ }
+ break;
+ default:
+ return false;
+ }
+ }
+}
+exports.isExpressionValueUsed = isExpressionValueUsed;
+function isInDestructuringAssignment(node) {
+ switch (node.kind) {
+ case ts.SyntaxKind.ShorthandPropertyAssignment:
+ if (node.objectAssignmentInitializer !== undefined)
+ return true;
+ case ts.SyntaxKind.PropertyAssignment:
+ case ts.SyntaxKind.SpreadAssignment:
+ node = node.parent;
+ break;
+ case ts.SyntaxKind.SpreadElement:
+ if (node.parent.kind !== ts.SyntaxKind.ArrayLiteralExpression)
+ return false;
+ node = node.parent;
+ }
+ while (true) {
+ switch (node.parent.kind) {
+ case ts.SyntaxKind.BinaryExpression:
+ return node.parent.left === node &&
+ node.parent.operatorToken.kind === ts.SyntaxKind.EqualsToken;
+ case ts.SyntaxKind.ForOfStatement:
+ return node.parent.initializer === node;
+ case ts.SyntaxKind.ArrayLiteralExpression:
+ case ts.SyntaxKind.ObjectLiteralExpression:
+ node = node.parent;
+ break;
+ case ts.SyntaxKind.SpreadAssignment:
+ case ts.SyntaxKind.PropertyAssignment:
+ node = node.parent.parent;
+ break;
+ case ts.SyntaxKind.SpreadElement:
+ if (node.parent.parent.kind !== ts.SyntaxKind.ArrayLiteralExpression)
+ return false;
+ node = node.parent.parent;
+ break;
+ default:
+ return false;
+ }
+ }
+}
+var AccessKind;
+(function (AccessKind) {
+ AccessKind[AccessKind["None"] = 0] = "None";
+ AccessKind[AccessKind["Read"] = 1] = "Read";
+ AccessKind[AccessKind["Write"] = 2] = "Write";
+ AccessKind[AccessKind["Delete"] = 4] = "Delete";
+ AccessKind[AccessKind["ReadWrite"] = 3] = "ReadWrite";
+ AccessKind[AccessKind["Modification"] = 6] = "Modification";
+})(AccessKind = exports.AccessKind || (exports.AccessKind = {}));
+function getAccessKind(node) {
+ const parent = node.parent;
+ switch (parent.kind) {
+ case ts.SyntaxKind.DeleteExpression:
+ return 4;
+ case ts.SyntaxKind.PostfixUnaryExpression:
+ return 3;
+ case ts.SyntaxKind.PrefixUnaryExpression:
+ return parent.operator === ts.SyntaxKind.PlusPlusToken ||
+ parent.operator === ts.SyntaxKind.MinusMinusToken
+ ? 3
+ : 1;
+ case ts.SyntaxKind.BinaryExpression:
+ return parent.right === node
+ ? 1
+ : !isAssignmentKind(parent.operatorToken.kind)
+ ? 1
+ : parent.operatorToken.kind === ts.SyntaxKind.EqualsToken
+ ? 2
+ : 3;
+ case ts.SyntaxKind.ShorthandPropertyAssignment:
+ return parent.objectAssignmentInitializer === node
+ ? 1
+ : isInDestructuringAssignment(parent)
+ ? 2
+ : 1;
+ case ts.SyntaxKind.PropertyAssignment:
+ return parent.name === node
+ ? 0
+ : isInDestructuringAssignment(parent)
+ ? 2
+ : 1;
+ case ts.SyntaxKind.ArrayLiteralExpression:
+ case ts.SyntaxKind.SpreadElement:
+ case ts.SyntaxKind.SpreadAssignment:
+ return isInDestructuringAssignment(parent)
+ ? 2
+ : 1;
+ case ts.SyntaxKind.ParenthesizedExpression:
+ case ts.SyntaxKind.NonNullExpression:
+ case ts.SyntaxKind.TypeAssertionExpression:
+ case ts.SyntaxKind.AsExpression:
+ return getAccessKind(parent);
+ case ts.SyntaxKind.ForOfStatement:
+ case ts.SyntaxKind.ForInStatement:
+ return parent.initializer === node
+ ? 2
+ : 1;
+ case ts.SyntaxKind.ExpressionWithTypeArguments:
+ return parent.parent.token === ts.SyntaxKind.ExtendsKeyword &&
+ parent.parent.parent.kind !== ts.SyntaxKind.InterfaceDeclaration
+ ? 1
+ : 0;
+ case ts.SyntaxKind.ComputedPropertyName:
+ case ts.SyntaxKind.ExpressionStatement:
+ case ts.SyntaxKind.TypeOfExpression:
+ case ts.SyntaxKind.ElementAccessExpression:
+ case ts.SyntaxKind.ForStatement:
+ case ts.SyntaxKind.IfStatement:
+ case ts.SyntaxKind.DoStatement:
+ case ts.SyntaxKind.WhileStatement:
+ case ts.SyntaxKind.SwitchStatement:
+ case ts.SyntaxKind.WithStatement:
+ case ts.SyntaxKind.ThrowStatement:
+ case ts.SyntaxKind.CallExpression:
+ case ts.SyntaxKind.NewExpression:
+ case ts.SyntaxKind.TaggedTemplateExpression:
+ case ts.SyntaxKind.JsxExpression:
+ case ts.SyntaxKind.Decorator:
+ case ts.SyntaxKind.TemplateSpan:
+ case ts.SyntaxKind.JsxOpeningElement:
+ case ts.SyntaxKind.JsxSelfClosingElement:
+ case ts.SyntaxKind.JsxSpreadAttribute:
+ case ts.SyntaxKind.VoidExpression:
+ case ts.SyntaxKind.ReturnStatement:
+ case ts.SyntaxKind.AwaitExpression:
+ case ts.SyntaxKind.YieldExpression:
+ case ts.SyntaxKind.ConditionalExpression:
+ case ts.SyntaxKind.CaseClause:
+ case ts.SyntaxKind.JsxElement:
+ return 1;
+ case ts.SyntaxKind.ArrowFunction:
+ return parent.body === node
+ ? 1
+ : 2;
+ case ts.SyntaxKind.PropertyDeclaration:
+ case ts.SyntaxKind.VariableDeclaration:
+ case ts.SyntaxKind.Parameter:
+ case ts.SyntaxKind.EnumMember:
+ case ts.SyntaxKind.BindingElement:
+ case ts.SyntaxKind.JsxAttribute:
+ return parent.initializer === node
+ ? 1
+ : 0;
+ case ts.SyntaxKind.PropertyAccessExpression:
+ return parent.expression === node
+ ? 1
+ : 0;
+ case ts.SyntaxKind.ExportAssignment:
+ return parent.isExportEquals
+ ? 1
+ : 0;
+ }
+ return 0;
+}
+exports.getAccessKind = getAccessKind;
+function isReassignmentTarget(node) {
+ return (getAccessKind(node) & 2) !== 0;
+}
+exports.isReassignmentTarget = isReassignmentTarget;
+function canHaveJsDoc(node) {
+ const kind = node.kind;
+ switch (kind) {
+ case ts.SyntaxKind.Parameter:
+ case ts.SyntaxKind.CallSignature:
+ case ts.SyntaxKind.ConstructSignature:
+ case ts.SyntaxKind.MethodSignature:
+ case ts.SyntaxKind.PropertySignature:
+ case ts.SyntaxKind.ArrowFunction:
+ case ts.SyntaxKind.ParenthesizedExpression:
+ case ts.SyntaxKind.SpreadAssignment:
+ case ts.SyntaxKind.ShorthandPropertyAssignment:
+ case ts.SyntaxKind.PropertyAssignment:
+ case ts.SyntaxKind.FunctionExpression:
+ case ts.SyntaxKind.FunctionDeclaration:
+ case ts.SyntaxKind.LabeledStatement:
+ case ts.SyntaxKind.ExpressionStatement:
+ case ts.SyntaxKind.VariableStatement:
+ case ts.SyntaxKind.Constructor:
+ case ts.SyntaxKind.MethodDeclaration:
+ case ts.SyntaxKind.PropertyDeclaration:
+ case ts.SyntaxKind.GetAccessor:
+ case ts.SyntaxKind.SetAccessor:
+ case ts.SyntaxKind.ClassDeclaration:
+ case ts.SyntaxKind.ClassExpression:
+ case ts.SyntaxKind.InterfaceDeclaration:
+ case ts.SyntaxKind.TypeAliasDeclaration:
+ case ts.SyntaxKind.EnumMember:
+ case ts.SyntaxKind.EnumDeclaration:
+ case ts.SyntaxKind.ModuleDeclaration:
+ case ts.SyntaxKind.ImportEqualsDeclaration:
+ case ts.SyntaxKind.IndexSignature:
+ case ts.SyntaxKind.FunctionType:
+ case ts.SyntaxKind.ConstructorType:
+ case ts.SyntaxKind.JSDocFunctionType:
+ case ts.SyntaxKind.EndOfFileToken:
+ case ts.SyntaxKind.ExportDeclaration:
+ return true;
+ default:
+ return false;
+ }
+}
+exports.canHaveJsDoc = canHaveJsDoc;
+function getJsDoc(node, sourceFile) {
+ if (node.kind === ts.SyntaxKind.EndOfFileToken)
+ return parseJsDocWorker(node, sourceFile || node.parent);
+ const result = [];
+ for (const child of node.getChildren(sourceFile)) {
+ if (!node_1.isJsDoc(child))
+ break;
+ result.push(child);
+ }
+ return result;
+}
+exports.getJsDoc = getJsDoc;
+function parseJsDocOfNode(node, considerTrailingComments, sourceFile = node.getSourceFile()) {
+ if (canHaveJsDoc(node) && node.kind !== ts.SyntaxKind.EndOfFileToken) {
+ const result = getJsDoc(node, sourceFile);
+ if (result.length !== 0 || !considerTrailingComments)
+ return result;
+ }
+ return parseJsDocWorker(node, sourceFile, considerTrailingComments);
+}
+exports.parseJsDocOfNode = parseJsDocOfNode;
+function parseJsDocWorker(node, sourceFile, considerTrailingComments) {
+ const nodeStart = node.getStart(sourceFile);
+ const start = ts[considerTrailingComments && isSameLine(sourceFile, node.pos, nodeStart)
+ ? 'forEachTrailingCommentRange'
+ : 'forEachLeadingCommentRange'](sourceFile.text, node.pos, (pos, _end, kind) => kind === ts.SyntaxKind.MultiLineCommentTrivia && sourceFile.text[pos + 2] === '*' ? { pos } : undefined);
+ if (start === undefined)
+ return [];
+ const startPos = start.pos;
+ const text = sourceFile.text.slice(startPos, nodeStart);
+ const newSourceFile = ts.createSourceFile('jsdoc.ts', `${text}var a;`, sourceFile.languageVersion);
+ const result = getJsDoc(newSourceFile.statements[0], newSourceFile);
+ for (const doc of result)
+ updateNode(doc, node);
+ return result;
+ function updateNode(n, parent) {
+ n.pos += startPos;
+ n.end += startPos;
+ n.parent = parent;
+ return ts.forEachChild(n, (child) => updateNode(child, n), (children) => {
+ children.pos += startPos;
+ children.end += startPos;
+ for (const child of children)
+ updateNode(child, n);
+ });
+ }
+}
+var ImportKind;
+(function (ImportKind) {
+ ImportKind[ImportKind["ImportDeclaration"] = 1] = "ImportDeclaration";
+ ImportKind[ImportKind["ImportEquals"] = 2] = "ImportEquals";
+ ImportKind[ImportKind["ExportFrom"] = 4] = "ExportFrom";
+ ImportKind[ImportKind["DynamicImport"] = 8] = "DynamicImport";
+ ImportKind[ImportKind["Require"] = 16] = "Require";
+ ImportKind[ImportKind["ImportType"] = 32] = "ImportType";
+ ImportKind[ImportKind["All"] = 63] = "All";
+ ImportKind[ImportKind["AllImports"] = 59] = "AllImports";
+ ImportKind[ImportKind["AllStaticImports"] = 3] = "AllStaticImports";
+ ImportKind[ImportKind["AllImportExpressions"] = 24] = "AllImportExpressions";
+ ImportKind[ImportKind["AllRequireLike"] = 18] = "AllRequireLike";
+ ImportKind[ImportKind["AllNestedImports"] = 56] = "AllNestedImports";
+ ImportKind[ImportKind["AllTopLevelImports"] = 7] = "AllTopLevelImports";
+})(ImportKind = exports.ImportKind || (exports.ImportKind = {}));
+function findImports(sourceFile, kinds) {
+ const result = [];
+ for (const node of findImportLikeNodes(sourceFile, kinds)) {
+ switch (node.kind) {
+ case ts.SyntaxKind.ImportDeclaration:
+ addIfTextualLiteral(node.moduleSpecifier);
+ break;
+ case ts.SyntaxKind.ImportEqualsDeclaration:
+ addIfTextualLiteral(node.moduleReference.expression);
+ break;
+ case ts.SyntaxKind.ExportDeclaration:
+ addIfTextualLiteral(node.moduleSpecifier);
+ break;
+ case ts.SyntaxKind.CallExpression:
+ addIfTextualLiteral(node.arguments[0]);
+ break;
+ case ts.SyntaxKind.ImportType:
+ if (node_1.isLiteralTypeNode(node.argument))
+ addIfTextualLiteral(node.argument.literal);
+ break;
+ default:
+ throw new Error('unexpected node');
+ }
+ }
+ return result;
+ function addIfTextualLiteral(node) {
+ if (node_1.isTextualLiteral(node))
+ result.push(node);
+ }
+}
+exports.findImports = findImports;
+function findImportLikeNodes(sourceFile, kinds) {
+ return new ImportFinder(sourceFile, kinds).find();
+}
+exports.findImportLikeNodes = findImportLikeNodes;
+class ImportFinder {
+ constructor(_sourceFile, _options) {
+ this._sourceFile = _sourceFile;
+ this._options = _options;
+ this._result = [];
+ }
+ find() {
+ if (this._sourceFile.isDeclarationFile)
+ this._options &= ~24;
+ if (this._options & 7)
+ this._findImports(this._sourceFile.statements);
+ if (this._options & 56)
+ this._findNestedImports();
+ return this._result;
+ }
+ _findImports(statements) {
+ for (const statement of statements) {
+ if (node_1.isImportDeclaration(statement)) {
+ if (this._options & 1)
+ this._result.push(statement);
+ }
+ else if (node_1.isImportEqualsDeclaration(statement)) {
+ if (this._options & 2 &&
+ statement.moduleReference.kind === ts.SyntaxKind.ExternalModuleReference)
+ this._result.push(statement);
+ }
+ else if (node_1.isExportDeclaration(statement)) {
+ if (statement.moduleSpecifier !== undefined && this._options & 4)
+ this._result.push(statement);
+ }
+ else if (node_1.isModuleDeclaration(statement)) {
+ this._findImportsInModule(statement);
+ }
+ }
+ }
+ _findImportsInModule(declaration) {
+ if (declaration.body === undefined)
+ return;
+ if (declaration.body.kind === ts.SyntaxKind.ModuleDeclaration)
+ return this._findImportsInModule(declaration.body);
+ this._findImports(declaration.body.statements);
+ }
+ _findNestedImports() {
+ let re;
+ if ((this._options & 56) === 16) {
+ re = /\brequire\s*[</(]/g;
+ }
+ else if (this._options & 16) {
+ re = /\b(?:import|require)\s*[</(]/g;
+ }
+ else {
+ re = /\bimport\s*[</(]/g;
+ }
+ const isJavaScriptFile = (this._sourceFile.flags & ts.NodeFlags.JavaScriptFile) !== 0;
+ for (let match = re.exec(this._sourceFile.text); match !== null; match = re.exec(this._sourceFile.text)) {
+ const token = getTokenAtPositionWorker(this._sourceFile, match.index, this._sourceFile, match[0][0] === 'i' && isJavaScriptFile);
+ if (token.kind === ts.SyntaxKind.ImportKeyword) {
+ if (token.end - 'import'.length !== match.index)
+ continue;
+ switch (token.parent.kind) {
+ case ts.SyntaxKind.ImportType:
+ this._result.push(token.parent);
+ break;
+ case ts.SyntaxKind.CallExpression:
+ if (token.parent.arguments.length === 1)
+ this._result.push(token.parent);
+ }
+ }
+ else if (token.kind === ts.SyntaxKind.Identifier &&
+ token.end - 'require'.length === match.index &&
+ token.parent.kind === ts.SyntaxKind.CallExpression &&
+ token.parent.expression === token &&
+ token.parent.arguments.length === 1) {
+ this._result.push(token.parent);
+ }
+ }
+ }
+}
+function isStatementInAmbientContext(node) {
+ while (node.flags & ts.NodeFlags.NestedNamespace)
+ node = node.parent;
+ return hasModifier(node.modifiers, ts.SyntaxKind.DeclareKeyword) || isAmbientModuleBlock(node.parent);
+}
+exports.isStatementInAmbientContext = isStatementInAmbientContext;
+function isAmbientModuleBlock(node) {
+ while (node.kind === ts.SyntaxKind.ModuleBlock) {
+ do
+ node = node.parent;
+ while (node.flags & ts.NodeFlags.NestedNamespace);
+ if (hasModifier(node.modifiers, ts.SyntaxKind.DeclareKeyword))
+ return true;
+ node = node.parent;
+ }
+ return false;
+}
+exports.isAmbientModuleBlock = isAmbientModuleBlock;
+function getIIFE(func) {
+ let node = func.parent;
+ while (node.kind === ts.SyntaxKind.ParenthesizedExpression)
+ node = node.parent;
+ return node_1.isCallExpression(node) && func.end <= node.expression.end ? node : undefined;
+}
+exports.getIIFE = getIIFE;
+function isStrictCompilerOptionEnabled(options, option) {
+ return (options.strict ? options[option] !== false : options[option] === true) &&
+ (option !== 'strictPropertyInitialization' || isStrictCompilerOptionEnabled(options, 'strictNullChecks'));
+}
+exports.isStrictCompilerOptionEnabled = isStrictCompilerOptionEnabled;
+function isCompilerOptionEnabled(options, option) {
+ switch (option) {
+ case 'stripInternal':
+ return options.stripInternal === true && isCompilerOptionEnabled(options, 'declaration');
+ case 'declaration':
+ return options.declaration || isCompilerOptionEnabled(options, 'composite');
+ case 'incremental':
+ return options.incremental === undefined ? isCompilerOptionEnabled(options, 'composite') : options.incremental;
+ case 'skipDefaultLibCheck':
+ return options.skipDefaultLibCheck || isCompilerOptionEnabled(options, 'skipLibCheck');
+ case 'suppressImplicitAnyIndexErrors':
+ return options.suppressImplicitAnyIndexErrors === true && isCompilerOptionEnabled(options, 'noImplicitAny');
+ case 'allowSyntheticDefaultImports':
+ return options.allowSyntheticDefaultImports !== undefined
+ ? options.allowSyntheticDefaultImports
+ : isCompilerOptionEnabled(options, 'esModuleInterop') || options.module === ts.ModuleKind.System;
+ case 'noImplicitAny':
+ case 'noImplicitThis':
+ case 'strictNullChecks':
+ case 'strictFunctionTypes':
+ case 'strictPropertyInitialization':
+ case 'alwaysStrict':
+ case 'strictBindCallApply':
+ return isStrictCompilerOptionEnabled(options, option);
+ }
+ return options[option] === true;
+}
+exports.isCompilerOptionEnabled = isCompilerOptionEnabled;
+function isAmbientModule(node) {
+ return node.name.kind === ts.SyntaxKind.StringLiteral || (node.flags & ts.NodeFlags.GlobalAugmentation) !== 0;
+}
+exports.isAmbientModule = isAmbientModule;
+function getCheckJsDirective(source) {
+ let directive;
+ ts.forEachLeadingCommentRange(source, (ts.getShebang(source) || '').length, (pos, end, kind) => {
+ if (kind === ts.SyntaxKind.SingleLineCommentTrivia) {
+ const text = source.slice(pos, end);
+ const match = /^\/{2,3}\s*@ts-(no)?check(?:\s|$)/i.exec(text);
+ if (match !== null)
+ directive = { pos, end, enabled: match[1] === undefined };
+ }
+ });
+ return directive;
+}
+exports.getCheckJsDirective = getCheckJsDirective;
+function isConstAssertion(node) {
+ return node_1.isTypeReferenceNode(node.type) &&
+ node.type.typeName.kind === ts.SyntaxKind.Identifier &&
+ node.type.typeName.escapedText === 'const';
+}
+exports.isConstAssertion = isConstAssertion;
+function isInConstContext(node) {
+ let current = node;
+ while (true) {
+ const parent = current.parent;
+ outer: switch (parent.kind) {
+ case ts.SyntaxKind.TypeAssertionExpression:
+ case ts.SyntaxKind.AsExpression:
+ return isConstAssertion(parent);
+ case ts.SyntaxKind.PrefixUnaryExpression:
+ if (current.kind !== ts.SyntaxKind.NumericLiteral)
+ return false;
+ switch (parent.operator) {
+ case ts.SyntaxKind.PlusToken:
+ case ts.SyntaxKind.MinusToken:
+ current = parent;
+ break outer;
+ default:
+ return false;
+ }
+ case ts.SyntaxKind.PropertyAssignment:
+ if (parent.initializer !== current)
+ return false;
+ current = parent.parent;
+ break;
+ case ts.SyntaxKind.ShorthandPropertyAssignment:
+ current = parent.parent;
+ break;
+ case ts.SyntaxKind.ParenthesizedExpression:
+ case ts.SyntaxKind.ArrayLiteralExpression:
+ case ts.SyntaxKind.ObjectLiteralExpression:
+ current = parent;
+ break;
+ default:
+ return false;
+ }
+ }
+}
+exports.isInConstContext = isInConstContext;
+function isReadonlyAssignmentDeclaration(node, checker) {
+ if (!isBindableObjectDefinePropertyCall(node))
+ return false;
+ const descriptorType = checker.getTypeAtLocation(node.arguments[2]);
+ if (descriptorType.getProperty('value') === undefined)
+ return descriptorType.getProperty('set') === undefined;
+ const writableProp = descriptorType.getProperty('writable');
+ if (writableProp === undefined)
+ return false;
+ const writableType = writableProp.valueDeclaration !== undefined && node_1.isPropertyAssignment(writableProp.valueDeclaration)
+ ? checker.getTypeAtLocation(writableProp.valueDeclaration.initializer)
+ : checker.getTypeOfSymbolAtLocation(writableProp, node.arguments[2]);
+ return type_1.isBooleanLiteralType(writableType, false);
+}
+exports.isReadonlyAssignmentDeclaration = isReadonlyAssignmentDeclaration;
+function isBindableObjectDefinePropertyCall(node) {
+ return node.arguments.length === 3 &&
+ node_1.isEntityNameExpression(node.arguments[0]) &&
+ node_1.isNumericOrStringLikeLiteral(node.arguments[1]) &&
+ node_1.isPropertyAccessExpression(node.expression) &&
+ node.expression.name.escapedText === 'defineProperty' &&
+ node_1.isIdentifier(node.expression.expression) &&
+ node.expression.expression.escapedText === 'Object';
+}
+exports.isBindableObjectDefinePropertyCall = isBindableObjectDefinePropertyCall;
+function isWellKnownSymbolLiterally(node) {
+ return ts.isPropertyAccessExpression(node) &&
+ ts.isIdentifier(node.expression) &&
+ node.expression.escapedText === 'Symbol';
+}
+exports.isWellKnownSymbolLiterally = isWellKnownSymbolLiterally;
+function getPropertyNameOfWellKnownSymbol(node) {
+ return {
+ displayName: `[Symbol.${node.name.text}]`,
+ symbolName: ('__@' + node.name.text),
+ };
+}
+exports.getPropertyNameOfWellKnownSymbol = getPropertyNameOfWellKnownSymbol;
+function getLateBoundPropertyNames(node, checker) {
+ const result = {
+ known: true,
+ names: [],
+ };
+ node = unwrapParentheses(node);
+ if (isWellKnownSymbolLiterally(node)) {
+ result.names.push(getPropertyNameOfWellKnownSymbol(node));
+ }
+ else {
+ const type = checker.getTypeAtLocation(node);
+ for (const key of type_1.unionTypeParts(checker.getBaseConstraintOfType(type) || type)) {
+ const propertyName = type_1.getPropertyNameFromType(key);
+ if (propertyName) {
+ result.names.push(propertyName);
+ }
+ else {
+ result.known = false;
+ }
+ }
+ }
+ return result;
+}
+exports.getLateBoundPropertyNames = getLateBoundPropertyNames;
+function getLateBoundPropertyNamesOfPropertyName(node, checker) {
+ const staticName = getPropertyName(node);
+ return staticName !== undefined
+ ? { known: true, names: [{ displayName: staticName, symbolName: ts.escapeLeadingUnderscores(staticName) }] }
+ : getLateBoundPropertyNames(node.expression, checker);
+}
+exports.getLateBoundPropertyNamesOfPropertyName = getLateBoundPropertyNamesOfPropertyName;
+function getSingleLateBoundPropertyNameOfPropertyName(node, checker) {
+ const staticName = getPropertyName(node);
+ if (staticName !== undefined)
+ return { displayName: staticName, symbolName: ts.escapeLeadingUnderscores(staticName) };
+ const { expression } = node;
+ return isWellKnownSymbolLiterally(expression)
+ ? getPropertyNameOfWellKnownSymbol(expression)
+ : type_1.getPropertyNameFromType(checker.getTypeAtLocation(expression));
+}
+exports.getSingleLateBoundPropertyNameOfPropertyName = getSingleLateBoundPropertyNameOfPropertyName;
+function unwrapParentheses(node) {
+ while (node.kind === ts.SyntaxKind.ParenthesizedExpression)
+ node = node.expression;
+ return node;
+}
+exports.unwrapParentheses = unwrapParentheses;
projects / dotfiles / .git / blobdiff