--- /dev/null
+"use strict";\r
+Object.defineProperty(exports, "__esModule", { value: true });\r
+exports.isValidIdentifier = exports.getLineBreakStyle = exports.getLineRanges = exports.forEachComment = exports.forEachTokenWithTrivia = exports.forEachToken = exports.isFunctionWithBody = exports.hasOwnThisReference = exports.isBlockScopeBoundary = exports.isFunctionScopeBoundary = exports.isTypeScopeBoundary = exports.isScopeBoundary = exports.ScopeBoundarySelector = exports.ScopeBoundary = exports.isInSingleStatementContext = exports.isBlockScopedDeclarationStatement = exports.isBlockScopedVariableDeclaration = exports.isBlockScopedVariableDeclarationList = exports.getVariableDeclarationKind = exports.VariableDeclarationKind = exports.forEachDeclaredVariable = exports.forEachDestructuringIdentifier = exports.getPropertyName = exports.getWrappedNodeAtPosition = exports.getAstNodeAtPosition = exports.commentText = exports.isPositionInComment = exports.getCommentAtPosition = exports.getTokenAtPosition = exports.getNextToken = exports.getPreviousToken = exports.getNextStatement = exports.getPreviousStatement = exports.isModifierFlagSet = exports.isObjectFlagSet = exports.isSymbolFlagSet = exports.isTypeFlagSet = exports.isNodeFlagSet = exports.hasAccessModifier = exports.isParameterProperty = exports.hasModifier = exports.getModifier = exports.isThisParameter = exports.isKeywordKind = exports.isJsDocKind = exports.isTypeNodeKind = exports.isAssignmentKind = exports.isNodeKind = exports.isTokenKind = exports.getChildOfKind = void 0;\r
+exports.getBaseOfClassLikeExpression = exports.hasExhaustiveCaseClauses = exports.formatPseudoBigInt = exports.unwrapParentheses = exports.getSingleLateBoundPropertyNameOfPropertyName = exports.getLateBoundPropertyNamesOfPropertyName = exports.getLateBoundPropertyNames = exports.getPropertyNameOfWellKnownSymbol = exports.isWellKnownSymbolLiterally = exports.isBindableObjectDefinePropertyCall = exports.isReadonlyAssignmentDeclaration = exports.isInConstContext = exports.isConstAssertion = exports.getTsCheckDirective = exports.getCheckJsDirective = exports.isAmbientModule = exports.isCompilerOptionEnabled = exports.isStrictCompilerOptionEnabled = exports.getIIFE = exports.isAmbientModuleBlock = exports.isStatementInAmbientContext = exports.findImportLikeNodes = exports.findImports = exports.ImportKind = exports.parseJsDocOfNode = exports.getJsDoc = exports.canHaveJsDoc = exports.isReassignmentTarget = exports.getAccessKind = exports.AccessKind = exports.isExpressionValueUsed = exports.getDeclarationOfBindingElement = exports.hasSideEffects = exports.SideEffectOptions = exports.isSameLine = exports.isNumericPropertyName = exports.isValidJsxIdentifier = exports.isValidNumericLiteral = exports.isValidPropertyName = exports.isValidPropertyAccess = void 0;\r
+const ts = require("typescript");\r
+const node_1 = require("../typeguard/node");\r
+const _3_2_1 = require("../typeguard/3.2");\r
+const type_1 = require("./type");\r
+function getChildOfKind(node, kind, sourceFile) {\r
+ for (const child of node.getChildren(sourceFile))\r
+ if (child.kind === kind)\r
+ return child;\r
+}\r
+exports.getChildOfKind = getChildOfKind;\r
+function isTokenKind(kind) {\r
+ return kind >= ts.SyntaxKind.FirstToken && kind <= ts.SyntaxKind.LastToken;\r
+}\r
+exports.isTokenKind = isTokenKind;\r
+function isNodeKind(kind) {\r
+ return kind >= ts.SyntaxKind.FirstNode;\r
+}\r
+exports.isNodeKind = isNodeKind;\r
+function isAssignmentKind(kind) {\r
+ return kind >= ts.SyntaxKind.FirstAssignment && kind <= ts.SyntaxKind.LastAssignment;\r
+}\r
+exports.isAssignmentKind = isAssignmentKind;\r
+function isTypeNodeKind(kind) {\r
+ return kind >= ts.SyntaxKind.FirstTypeNode && kind <= ts.SyntaxKind.LastTypeNode;\r
+}\r
+exports.isTypeNodeKind = isTypeNodeKind;\r
+function isJsDocKind(kind) {\r
+ return kind >= ts.SyntaxKind.FirstJSDocNode && kind <= ts.SyntaxKind.LastJSDocNode;\r
+}\r
+exports.isJsDocKind = isJsDocKind;\r
+function isKeywordKind(kind) {\r
+ return kind >= ts.SyntaxKind.FirstKeyword && kind <= ts.SyntaxKind.LastKeyword;\r
+}\r
+exports.isKeywordKind = isKeywordKind;\r
+function isThisParameter(parameter) {\r
+ return parameter.name.kind === ts.SyntaxKind.Identifier && parameter.name.originalKeywordKind === ts.SyntaxKind.ThisKeyword;\r
+}\r
+exports.isThisParameter = isThisParameter;\r
+function getModifier(node, kind) {\r
+ if (node.modifiers !== undefined)\r
+ for (const modifier of node.modifiers)\r
+ if (modifier.kind === kind)\r
+ return modifier;\r
+}\r
+exports.getModifier = getModifier;\r
+function hasModifier(modifiers, ...kinds) {\r
+ if (modifiers === undefined)\r
+ return false;\r
+ for (const modifier of modifiers)\r
+ if (kinds.includes(modifier.kind))\r
+ return true;\r
+ return false;\r
+}\r
+exports.hasModifier = hasModifier;\r
+function isParameterProperty(node) {\r
+ return hasModifier(node.modifiers, ts.SyntaxKind.PublicKeyword, ts.SyntaxKind.ProtectedKeyword, ts.SyntaxKind.PrivateKeyword, ts.SyntaxKind.ReadonlyKeyword);\r
+}\r
+exports.isParameterProperty = isParameterProperty;\r
+function hasAccessModifier(node) {\r
+ return isModifierFlagSet(node, ts.ModifierFlags.AccessibilityModifier);\r
+}\r
+exports.hasAccessModifier = hasAccessModifier;\r
+function isFlagSet(obj, flag) {\r
+ return (obj.flags & flag) !== 0;\r
+}\r
+exports.isNodeFlagSet = isFlagSet;\r
+exports.isTypeFlagSet = isFlagSet;\r
+exports.isSymbolFlagSet = isFlagSet;\r
+function isObjectFlagSet(objectType, flag) {\r
+ return (objectType.objectFlags & flag) !== 0;\r
+}\r
+exports.isObjectFlagSet = isObjectFlagSet;\r
+function isModifierFlagSet(node, flag) {\r
+ return (ts.getCombinedModifierFlags(node) & flag) !== 0;\r
+}\r
+exports.isModifierFlagSet = isModifierFlagSet;\r
+function getPreviousStatement(statement) {\r
+ const parent = statement.parent;\r
+ if (node_1.isBlockLike(parent)) {\r
+ const index = parent.statements.indexOf(statement);\r
+ if (index > 0)\r
+ return parent.statements[index - 1];\r
+ }\r
+}\r
+exports.getPreviousStatement = getPreviousStatement;\r
+function getNextStatement(statement) {\r
+ const parent = statement.parent;\r
+ if (node_1.isBlockLike(parent)) {\r
+ const index = parent.statements.indexOf(statement);\r
+ if (index < parent.statements.length)\r
+ return parent.statements[index + 1];\r
+ }\r
+}\r
+exports.getNextStatement = getNextStatement;\r
+/** Returns the token before the start of `node` or `undefined` if there is none. */\r
+function getPreviousToken(node, sourceFile) {\r
+ const { pos } = node;\r
+ if (pos === 0)\r
+ return;\r
+ do\r
+ node = node.parent;\r
+ while (node.pos === pos);\r
+ return getTokenAtPositionWorker(node, pos - 1, sourceFile !== null && sourceFile !== void 0 ? sourceFile : node.getSourceFile(), false);\r
+}\r
+exports.getPreviousToken = getPreviousToken;\r
+/** Returns the next token that begins after the end of `node`. Returns `undefined` for SourceFile and EndOfFileToken */\r
+function getNextToken(node, sourceFile) {\r
+ if (node.kind === ts.SyntaxKind.SourceFile || node.kind === ts.SyntaxKind.EndOfFileToken)\r
+ return;\r
+ const end = node.end;\r
+ node = node.parent;\r
+ while (node.end === end) {\r
+ if (node.parent === undefined)\r
+ return node.endOfFileToken;\r
+ node = node.parent;\r
+ }\r
+ return getTokenAtPositionWorker(node, end, sourceFile !== null && sourceFile !== void 0 ? sourceFile : node.getSourceFile(), false);\r
+}\r
+exports.getNextToken = getNextToken;\r
+/** Returns the token at or following the specified position or undefined if none is found inside `parent`. */\r
+function getTokenAtPosition(parent, pos, sourceFile, allowJsDoc) {\r
+ if (pos < parent.pos || pos >= parent.end)\r
+ return;\r
+ if (isTokenKind(parent.kind))\r
+ return parent;\r
+ return getTokenAtPositionWorker(parent, pos, sourceFile !== null && sourceFile !== void 0 ? sourceFile : parent.getSourceFile(), allowJsDoc === true);\r
+}\r
+exports.getTokenAtPosition = getTokenAtPosition;\r
+function getTokenAtPositionWorker(node, pos, sourceFile, allowJsDoc) {\r
+ if (!allowJsDoc) {\r
+ // if we are not interested in JSDoc, we can skip to the deepest AST node at the given position\r
+ node = getAstNodeAtPosition(node, pos);\r
+ if (isTokenKind(node.kind))\r
+ return node;\r
+ }\r
+ outer: while (true) {\r
+ for (const child of node.getChildren(sourceFile)) {\r
+ if (child.end > pos && (allowJsDoc || child.kind !== ts.SyntaxKind.JSDocComment)) {\r
+ if (isTokenKind(child.kind))\r
+ return child;\r
+ // next token is nested in another node\r
+ node = child;\r
+ continue outer;\r
+ }\r
+ }\r
+ return;\r
+ }\r
+}\r
+/**\r
+ * Return the comment at the specified position.\r
+ * You can pass an optional `parent` to avoid some work finding the corresponding token starting at `sourceFile`.\r
+ * If the `parent` parameter is passed, `pos` must be between `parent.pos` and `parent.end`.\r
+*/\r
+function getCommentAtPosition(sourceFile, pos, parent = sourceFile) {\r
+ const token = getTokenAtPosition(parent, pos, sourceFile);\r
+ if (token === undefined || token.kind === ts.SyntaxKind.JsxText || pos >= token.end - (ts.tokenToString(token.kind) || '').length)\r
+ return;\r
+ const startPos = token.pos === 0\r
+ ? (ts.getShebang(sourceFile.text) || '').length\r
+ : token.pos;\r
+ return startPos !== 0 && ts.forEachTrailingCommentRange(sourceFile.text, startPos, commentAtPositionCallback, pos) ||\r
+ ts.forEachLeadingCommentRange(sourceFile.text, startPos, commentAtPositionCallback, pos);\r
+}\r
+exports.getCommentAtPosition = getCommentAtPosition;\r
+function commentAtPositionCallback(pos, end, kind, _nl, at) {\r
+ return at >= pos && at < end ? { pos, end, kind } : undefined;\r
+}\r
+/**\r
+ * Returns whether the specified position is inside a comment.\r
+ * You can pass an optional `parent` to avoid some work finding the corresponding token starting at `sourceFile`.\r
+ * If the `parent` parameter is passed, `pos` must be between `parent.pos` and `parent.end`.\r
+ */\r
+function isPositionInComment(sourceFile, pos, parent) {\r
+ return getCommentAtPosition(sourceFile, pos, parent) !== undefined;\r
+}\r
+exports.isPositionInComment = isPositionInComment;\r
+function commentText(sourceText, comment) {\r
+ return sourceText.substring(comment.pos + 2, comment.kind === ts.SyntaxKind.SingleLineCommentTrivia ? comment.end : comment.end - 2);\r
+}\r
+exports.commentText = commentText;\r
+/** Returns the deepest AST Node at `pos`. Returns undefined if `pos` is outside of the range of `node` */\r
+function getAstNodeAtPosition(node, pos) {\r
+ if (node.pos > pos || node.end <= pos)\r
+ return;\r
+ while (isNodeKind(node.kind)) {\r
+ const nested = ts.forEachChild(node, (child) => child.pos <= pos && child.end > pos ? child : undefined);\r
+ if (nested === undefined)\r
+ break;\r
+ node = nested;\r
+ }\r
+ return node;\r
+}\r
+exports.getAstNodeAtPosition = getAstNodeAtPosition;\r
+/**\r
+ * Returns the NodeWrap of deepest AST node that contains `pos` between its `pos` and `end`.\r
+ * Only returns undefined if pos is outside of `wrap`\r
+ */\r
+function getWrappedNodeAtPosition(wrap, pos) {\r
+ if (wrap.node.pos > pos || wrap.node.end <= pos)\r
+ return;\r
+ outer: while (true) {\r
+ for (const child of wrap.children) {\r
+ if (child.node.pos > pos)\r
+ return wrap;\r
+ if (child.node.end > pos) {\r
+ wrap = child;\r
+ continue outer;\r
+ }\r
+ }\r
+ return wrap;\r
+ }\r
+}\r
+exports.getWrappedNodeAtPosition = getWrappedNodeAtPosition;\r
+function getPropertyName(propertyName) {\r
+ if (propertyName.kind === ts.SyntaxKind.ComputedPropertyName) {\r
+ const expression = unwrapParentheses(propertyName.expression);\r
+ if (node_1.isPrefixUnaryExpression(expression)) {\r
+ let negate = false;\r
+ switch (expression.operator) {\r
+ case ts.SyntaxKind.MinusToken:\r
+ negate = true;\r
+ // falls through\r
+ case ts.SyntaxKind.PlusToken:\r
+ return node_1.isNumericLiteral(expression.operand)\r
+ ? `${negate ? '-' : ''}${expression.operand.text}`\r
+ : _3_2_1.isBigIntLiteral(expression.operand)\r
+ ? `${negate ? '-' : ''}${expression.operand.text.slice(0, -1)}`\r
+ : undefined;\r
+ default:\r
+ return;\r
+ }\r
+ }\r
+ if (_3_2_1.isBigIntLiteral(expression))\r
+ // handle BigInt, even though TypeScript doesn't allow BigInt as computed property name\r
+ return expression.text.slice(0, -1);\r
+ if (node_1.isNumericOrStringLikeLiteral(expression))\r
+ return expression.text;\r
+ return;\r
+ }\r
+ return propertyName.kind === ts.SyntaxKind.PrivateIdentifier ? undefined : propertyName.text;\r
+}\r
+exports.getPropertyName = getPropertyName;\r
+function forEachDestructuringIdentifier(pattern, fn) {\r
+ for (const element of pattern.elements) {\r
+ if (element.kind !== ts.SyntaxKind.BindingElement)\r
+ continue;\r
+ let result;\r
+ if (element.name.kind === ts.SyntaxKind.Identifier) {\r
+ result = fn(element);\r
+ }\r
+ else {\r
+ result = forEachDestructuringIdentifier(element.name, fn);\r
+ }\r
+ if (result)\r
+ return result;\r
+ }\r
+}\r
+exports.forEachDestructuringIdentifier = forEachDestructuringIdentifier;\r
+function forEachDeclaredVariable(declarationList, cb) {\r
+ for (const declaration of declarationList.declarations) {\r
+ let result;\r
+ if (declaration.name.kind === ts.SyntaxKind.Identifier) {\r
+ result = cb(declaration);\r
+ }\r
+ else {\r
+ result = forEachDestructuringIdentifier(declaration.name, cb);\r
+ }\r
+ if (result)\r
+ return result;\r
+ }\r
+}\r
+exports.forEachDeclaredVariable = forEachDeclaredVariable;\r
+var VariableDeclarationKind;\r
+(function (VariableDeclarationKind) {\r
+ VariableDeclarationKind[VariableDeclarationKind["Var"] = 0] = "Var";\r
+ VariableDeclarationKind[VariableDeclarationKind["Let"] = 1] = "Let";\r
+ VariableDeclarationKind[VariableDeclarationKind["Const"] = 2] = "Const";\r
+})(VariableDeclarationKind = exports.VariableDeclarationKind || (exports.VariableDeclarationKind = {}));\r
+function getVariableDeclarationKind(declarationList) {\r
+ if (declarationList.flags & ts.NodeFlags.Let)\r
+ return 1 /* Let */;\r
+ if (declarationList.flags & ts.NodeFlags.Const)\r
+ return 2 /* Const */;\r
+ return 0 /* Var */;\r
+}\r
+exports.getVariableDeclarationKind = getVariableDeclarationKind;\r
+function isBlockScopedVariableDeclarationList(declarationList) {\r
+ return (declarationList.flags & ts.NodeFlags.BlockScoped) !== 0;\r
+}\r
+exports.isBlockScopedVariableDeclarationList = isBlockScopedVariableDeclarationList;\r
+function isBlockScopedVariableDeclaration(declaration) {\r
+ const parent = declaration.parent;\r
+ return parent.kind === ts.SyntaxKind.CatchClause ||\r
+ isBlockScopedVariableDeclarationList(parent);\r
+}\r
+exports.isBlockScopedVariableDeclaration = isBlockScopedVariableDeclaration;\r
+function isBlockScopedDeclarationStatement(statement) {\r
+ switch (statement.kind) {\r
+ case ts.SyntaxKind.VariableStatement:\r
+ return isBlockScopedVariableDeclarationList(statement.declarationList);\r
+ case ts.SyntaxKind.ClassDeclaration:\r
+ case ts.SyntaxKind.EnumDeclaration:\r
+ case ts.SyntaxKind.InterfaceDeclaration:\r
+ case ts.SyntaxKind.TypeAliasDeclaration:\r
+ return true;\r
+ default:\r
+ return false;\r
+ }\r
+}\r
+exports.isBlockScopedDeclarationStatement = isBlockScopedDeclarationStatement;\r
+function isInSingleStatementContext(statement) {\r
+ switch (statement.parent.kind) {\r
+ case ts.SyntaxKind.ForStatement:\r
+ case ts.SyntaxKind.ForInStatement:\r
+ case ts.SyntaxKind.ForOfStatement:\r
+ case ts.SyntaxKind.WhileStatement:\r
+ case ts.SyntaxKind.DoStatement:\r
+ case ts.SyntaxKind.IfStatement:\r
+ case ts.SyntaxKind.WithStatement:\r
+ case ts.SyntaxKind.LabeledStatement:\r
+ return true;\r
+ default:\r
+ return false;\r
+ }\r
+}\r
+exports.isInSingleStatementContext = isInSingleStatementContext;\r
+var ScopeBoundary;\r
+(function (ScopeBoundary) {\r
+ ScopeBoundary[ScopeBoundary["None"] = 0] = "None";\r
+ ScopeBoundary[ScopeBoundary["Function"] = 1] = "Function";\r
+ ScopeBoundary[ScopeBoundary["Block"] = 2] = "Block";\r
+ ScopeBoundary[ScopeBoundary["Type"] = 4] = "Type";\r
+ ScopeBoundary[ScopeBoundary["ConditionalType"] = 8] = "ConditionalType";\r
+})(ScopeBoundary = exports.ScopeBoundary || (exports.ScopeBoundary = {}));\r
+var ScopeBoundarySelector;\r
+(function (ScopeBoundarySelector) {\r
+ ScopeBoundarySelector[ScopeBoundarySelector["Function"] = 1] = "Function";\r
+ ScopeBoundarySelector[ScopeBoundarySelector["Block"] = 3] = "Block";\r
+ ScopeBoundarySelector[ScopeBoundarySelector["Type"] = 7] = "Type";\r
+ ScopeBoundarySelector[ScopeBoundarySelector["InferType"] = 8] = "InferType";\r
+})(ScopeBoundarySelector = exports.ScopeBoundarySelector || (exports.ScopeBoundarySelector = {}));\r
+function isScopeBoundary(node) {\r
+ return isFunctionScopeBoundary(node) || isBlockScopeBoundary(node) || isTypeScopeBoundary(node);\r
+}\r
+exports.isScopeBoundary = isScopeBoundary;\r
+function isTypeScopeBoundary(node) {\r
+ switch (node.kind) {\r
+ case ts.SyntaxKind.InterfaceDeclaration:\r
+ case ts.SyntaxKind.TypeAliasDeclaration:\r
+ case ts.SyntaxKind.MappedType:\r
+ return 4 /* Type */;\r
+ case ts.SyntaxKind.ConditionalType:\r
+ return 8 /* ConditionalType */;\r
+ default:\r
+ return 0 /* None */;\r
+ }\r
+}\r
+exports.isTypeScopeBoundary = isTypeScopeBoundary;\r
+function isFunctionScopeBoundary(node) {\r
+ switch (node.kind) {\r
+ case ts.SyntaxKind.FunctionExpression:\r
+ case ts.SyntaxKind.ArrowFunction:\r
+ case ts.SyntaxKind.Constructor:\r
+ case ts.SyntaxKind.ModuleDeclaration:\r
+ case ts.SyntaxKind.ClassDeclaration:\r
+ case ts.SyntaxKind.ClassExpression:\r
+ case ts.SyntaxKind.EnumDeclaration:\r
+ case ts.SyntaxKind.MethodDeclaration:\r
+ case ts.SyntaxKind.FunctionDeclaration:\r
+ case ts.SyntaxKind.GetAccessor:\r
+ case ts.SyntaxKind.SetAccessor:\r
+ case ts.SyntaxKind.MethodSignature:\r
+ case ts.SyntaxKind.CallSignature:\r
+ case ts.SyntaxKind.ConstructSignature:\r
+ case ts.SyntaxKind.ConstructorType:\r
+ case ts.SyntaxKind.FunctionType:\r
+ return 1 /* Function */;\r
+ case ts.SyntaxKind.SourceFile:\r
+ // if SourceFile is no module, it contributes to the global scope and is therefore no scope boundary\r
+ return ts.isExternalModule(node) ? 1 /* Function */ : 0 /* None */;\r
+ default:\r
+ return 0 /* None */;\r
+ }\r
+}\r
+exports.isFunctionScopeBoundary = isFunctionScopeBoundary;\r
+function isBlockScopeBoundary(node) {\r
+ switch (node.kind) {\r
+ case ts.SyntaxKind.Block:\r
+ const parent = node.parent;\r
+ return parent.kind !== ts.SyntaxKind.CatchClause &&\r
+ // blocks inside SourceFile are block scope boundaries\r
+ (parent.kind === ts.SyntaxKind.SourceFile ||\r
+ // blocks that are direct children of a function scope boundary are no scope boundary\r
+ // for example the FunctionBlock is part of the function scope of the containing function\r
+ !isFunctionScopeBoundary(parent))\r
+ ? 2 /* Block */\r
+ : 0 /* None */;\r
+ case ts.SyntaxKind.ForStatement:\r
+ case ts.SyntaxKind.ForInStatement:\r
+ case ts.SyntaxKind.ForOfStatement:\r
+ case ts.SyntaxKind.CaseBlock:\r
+ case ts.SyntaxKind.CatchClause:\r
+ case ts.SyntaxKind.WithStatement:\r
+ return 2 /* Block */;\r
+ default:\r
+ return 0 /* None */;\r
+ }\r
+}\r
+exports.isBlockScopeBoundary = isBlockScopeBoundary;\r
+/** Returns true for scope boundaries that have their own `this` reference instead of inheriting it from the containing scope */\r
+function hasOwnThisReference(node) {\r
+ switch (node.kind) {\r
+ case ts.SyntaxKind.ClassDeclaration:\r
+ case ts.SyntaxKind.ClassExpression:\r
+ case ts.SyntaxKind.FunctionExpression:\r
+ return true;\r
+ case ts.SyntaxKind.FunctionDeclaration:\r
+ return node.body !== undefined;\r
+ case ts.SyntaxKind.MethodDeclaration:\r
+ case ts.SyntaxKind.GetAccessor:\r
+ case ts.SyntaxKind.SetAccessor:\r
+ return node.parent.kind === ts.SyntaxKind.ObjectLiteralExpression;\r
+ default:\r
+ return false;\r
+ }\r
+}\r
+exports.hasOwnThisReference = hasOwnThisReference;\r
+function isFunctionWithBody(node) {\r
+ switch (node.kind) {\r
+ case ts.SyntaxKind.GetAccessor:\r
+ case ts.SyntaxKind.SetAccessor:\r
+ case ts.SyntaxKind.FunctionDeclaration:\r
+ case ts.SyntaxKind.MethodDeclaration:\r
+ case ts.SyntaxKind.Constructor:\r
+ return node.body !== undefined;\r
+ case ts.SyntaxKind.FunctionExpression:\r
+ case ts.SyntaxKind.ArrowFunction:\r
+ return true;\r
+ default:\r
+ return false;\r
+ }\r
+}\r
+exports.isFunctionWithBody = isFunctionWithBody;\r
+/**\r
+ * Iterate over all tokens of `node`\r
+ *\r
+ * @param node The node whose tokens should be visited\r
+ * @param cb Is called for every token contained in `node`\r
+ */\r
+function forEachToken(node, cb, sourceFile = node.getSourceFile()) {\r
+ const queue = [];\r
+ while (true) {\r
+ if (isTokenKind(node.kind)) {\r
+ cb(node);\r
+ }\r
+ else if (node.kind !== ts.SyntaxKind.JSDocComment) {\r
+ const children = node.getChildren(sourceFile);\r
+ if (children.length === 1) {\r
+ node = children[0];\r
+ continue;\r
+ }\r
+ for (let i = children.length - 1; i >= 0; --i)\r
+ queue.push(children[i]); // add children in reverse order, when we pop the next element from the queue, it's the first child\r
+ }\r
+ if (queue.length === 0)\r
+ break;\r
+ node = queue.pop();\r
+ }\r
+}\r
+exports.forEachToken = forEachToken;\r
+/**\r
+ * Iterate over all tokens and trivia of `node`\r
+ *\r
+ * @description JsDoc comments are treated like regular comments\r
+ *\r
+ * @param node The node whose tokens should be visited\r
+ * @param cb Is called for every token contained in `node` and trivia before the token\r
+ */\r
+function forEachTokenWithTrivia(node, cb, sourceFile = node.getSourceFile()) {\r
+ const fullText = sourceFile.text;\r
+ const scanner = ts.createScanner(sourceFile.languageVersion, false, sourceFile.languageVariant, fullText);\r
+ return forEachToken(node, (token) => {\r
+ const tokenStart = token.kind === ts.SyntaxKind.JsxText || token.pos === token.end ? token.pos : token.getStart(sourceFile);\r
+ if (tokenStart !== token.pos) {\r
+ // we only have to handle trivia before each token. whitespace at the end of the file is followed by EndOfFileToken\r
+ scanner.setTextPos(token.pos);\r
+ let kind = scanner.scan();\r
+ let pos = scanner.getTokenPos();\r
+ while (pos < tokenStart) {\r
+ const textPos = scanner.getTextPos();\r
+ cb(fullText, kind, { pos, end: textPos }, token.parent);\r
+ if (textPos === tokenStart)\r
+ break;\r
+ kind = scanner.scan();\r
+ pos = scanner.getTokenPos();\r
+ }\r
+ }\r
+ return cb(fullText, token.kind, { end: token.end, pos: tokenStart }, token.parent);\r
+ }, sourceFile);\r
+}\r
+exports.forEachTokenWithTrivia = forEachTokenWithTrivia;\r
+/** Iterate over all comments owned by `node` or its children */\r
+function forEachComment(node, cb, sourceFile = node.getSourceFile()) {\r
+ /* Visit all tokens and skip trivia.\r
+ Comment ranges between tokens are parsed without the need of a scanner.\r
+ forEachTokenWithWhitespace does intentionally not pay attention to the correct comment ownership of nodes as it always\r
+ scans all trivia before each token, which could include trailing comments of the previous token.\r
+ Comment onwership is done right in this function*/\r
+ const fullText = sourceFile.text;\r
+ const notJsx = sourceFile.languageVariant !== ts.LanguageVariant.JSX;\r
+ return forEachToken(node, (token) => {\r
+ if (token.pos === token.end)\r
+ return;\r
+ if (token.kind !== ts.SyntaxKind.JsxText)\r
+ ts.forEachLeadingCommentRange(fullText, \r
+ // skip shebang at position 0\r
+ token.pos === 0 ? (ts.getShebang(fullText) || '').length : token.pos, commentCallback);\r
+ if (notJsx || canHaveTrailingTrivia(token))\r
+ return ts.forEachTrailingCommentRange(fullText, token.end, commentCallback);\r
+ }, sourceFile);\r
+ function commentCallback(pos, end, kind) {\r
+ cb(fullText, { pos, end, kind });\r
+ }\r
+}\r
+exports.forEachComment = forEachComment;\r
+/** Exclude trailing positions that would lead to scanning for trivia inside JsxText */\r
+function canHaveTrailingTrivia(token) {\r
+ switch (token.kind) {\r
+ case ts.SyntaxKind.CloseBraceToken:\r
+ // after a JsxExpression inside a JsxElement's body can only be other JsxChild, but no trivia\r
+ return token.parent.kind !== ts.SyntaxKind.JsxExpression || !isJsxElementOrFragment(token.parent.parent);\r
+ case ts.SyntaxKind.GreaterThanToken:\r
+ switch (token.parent.kind) {\r
+ case ts.SyntaxKind.JsxOpeningElement:\r
+ // if end is not equal, this is part of the type arguments list. in all other cases it would be inside the element body\r
+ return token.end !== token.parent.end;\r
+ case ts.SyntaxKind.JsxOpeningFragment:\r
+ return false; // would be inside the fragment\r
+ case ts.SyntaxKind.JsxSelfClosingElement:\r
+ return token.end !== token.parent.end || // if end is not equal, this is part of the type arguments list\r
+ !isJsxElementOrFragment(token.parent.parent); // there's only trailing trivia if it's the end of the top element\r
+ case ts.SyntaxKind.JsxClosingElement:\r
+ case ts.SyntaxKind.JsxClosingFragment:\r
+ // there's only trailing trivia if it's the end of the top element\r
+ return !isJsxElementOrFragment(token.parent.parent.parent);\r
+ }\r
+ }\r
+ return true;\r
+}\r
+function isJsxElementOrFragment(node) {\r
+ return node.kind === ts.SyntaxKind.JsxElement || node.kind === ts.SyntaxKind.JsxFragment;\r
+}\r
+function getLineRanges(sourceFile) {\r
+ const lineStarts = sourceFile.getLineStarts();\r
+ const result = [];\r
+ const length = lineStarts.length;\r
+ const sourceText = sourceFile.text;\r
+ let pos = 0;\r
+ for (let i = 1; i < length; ++i) {\r
+ const end = lineStarts[i];\r
+ let lineEnd = end;\r
+ for (; lineEnd > pos; --lineEnd)\r
+ if (!ts.isLineBreak(sourceText.charCodeAt(lineEnd - 1)))\r
+ break;\r
+ result.push({\r
+ pos,\r
+ end,\r
+ contentLength: lineEnd - pos,\r
+ });\r
+ pos = end;\r
+ }\r
+ result.push({\r
+ pos,\r
+ end: sourceFile.end,\r
+ contentLength: sourceFile.end - pos,\r
+ });\r
+ return result;\r
+}\r
+exports.getLineRanges = getLineRanges;\r
+/** Get the line break style used in sourceFile. This function only looks at the first line break. If there is none, \n is assumed. */\r
+function getLineBreakStyle(sourceFile) {\r
+ const lineStarts = sourceFile.getLineStarts();\r
+ return lineStarts.length === 1 || lineStarts[1] < 2 || sourceFile.text[lineStarts[1] - 2] !== '\r'\r
+ ? '\n'\r
+ : '\r\n';\r
+}\r
+exports.getLineBreakStyle = getLineBreakStyle;\r
+let cachedScanner;\r
+function scanToken(text, languageVersion) {\r
+ if (cachedScanner === undefined) {\r
+ // cache scanner\r
+ cachedScanner = ts.createScanner(languageVersion, false, undefined, text);\r
+ }\r
+ else {\r
+ cachedScanner.setScriptTarget(languageVersion);\r
+ cachedScanner.setText(text);\r
+ }\r
+ cachedScanner.scan();\r
+ return cachedScanner;\r
+}\r
+/**\r
+ * Determines whether the given text parses as a standalone identifier.\r
+ * This is not a guarantee that it works in every context. The property name in PropertyAccessExpressions for example allows reserved words.\r
+ * Depending on the context it could be parsed as contextual keyword or TypeScript keyword.\r
+ */\r
+function isValidIdentifier(text, languageVersion = ts.ScriptTarget.Latest) {\r
+ const scan = scanToken(text, languageVersion);\r
+ return scan.isIdentifier() && scan.getTextPos() === text.length && scan.getTokenPos() === 0;\r
+}\r
+exports.isValidIdentifier = isValidIdentifier;\r
+function charSize(ch) {\r
+ return ch >= 0x10000 ? 2 : 1;\r
+}\r
+/**\r
+ * Determines whether the given text can be used to access a property with a PropertyAccessExpression while preserving the property's name.\r
+ */\r
+function isValidPropertyAccess(text, languageVersion = ts.ScriptTarget.Latest) {\r
+ if (text.length === 0)\r
+ return false;\r
+ let ch = text.codePointAt(0);\r
+ if (!ts.isIdentifierStart(ch, languageVersion))\r
+ return false;\r
+ for (let i = charSize(ch); i < text.length; i += charSize(ch)) {\r
+ ch = text.codePointAt(i);\r
+ if (!ts.isIdentifierPart(ch, languageVersion))\r
+ return false;\r
+ }\r
+ return true;\r
+}\r
+exports.isValidPropertyAccess = isValidPropertyAccess;\r
+/**\r
+ * Determines whether the given text can be used as unquoted name of a property declaration while preserving the property's name.\r
+ */\r
+function isValidPropertyName(text, languageVersion = ts.ScriptTarget.Latest) {\r
+ if (isValidPropertyAccess(text, languageVersion))\r
+ return true;\r
+ const scan = scanToken(text, languageVersion);\r
+ return scan.getTextPos() === text.length &&\r
+ scan.getToken() === ts.SyntaxKind.NumericLiteral && scan.getTokenValue() === text; // ensure stringified number equals literal\r
+}\r
+exports.isValidPropertyName = isValidPropertyName;\r
+/**\r
+ * Determines whether the given text can be parsed as a numeric literal.\r
+ */\r
+function isValidNumericLiteral(text, languageVersion = ts.ScriptTarget.Latest) {\r
+ const scan = scanToken(text, languageVersion);\r
+ return scan.getToken() === ts.SyntaxKind.NumericLiteral && scan.getTextPos() === text.length && scan.getTokenPos() === 0;\r
+}\r
+exports.isValidNumericLiteral = isValidNumericLiteral;\r
+/**\r
+ * Determines whether the given text can be used as JSX tag or attribute name while preserving the exact name.\r
+ */\r
+function isValidJsxIdentifier(text, languageVersion = ts.ScriptTarget.Latest) {\r
+ if (text.length === 0)\r
+ return false;\r
+ let seenNamespaceSeparator = false;\r
+ let ch = text.codePointAt(0);\r
+ if (!ts.isIdentifierStart(ch, languageVersion))\r
+ return false;\r
+ for (let i = charSize(ch); i < text.length; i += charSize(ch)) {\r
+ ch = text.codePointAt(i);\r
+ if (!ts.isIdentifierPart(ch, languageVersion) && ch !== 45 /* minus */) {\r
+ if (!seenNamespaceSeparator && ch === 58 /* colon */ && i + charSize(ch) !== text.length) {\r
+ seenNamespaceSeparator = true;\r
+ }\r
+ else {\r
+ return false;\r
+ }\r
+ }\r
+ }\r
+ return true;\r
+}\r
+exports.isValidJsxIdentifier = isValidJsxIdentifier;\r
+function isNumericPropertyName(name) {\r
+ return String(+name) === name;\r
+}\r
+exports.isNumericPropertyName = isNumericPropertyName;\r
+function isSameLine(sourceFile, pos1, pos2) {\r
+ return ts.getLineAndCharacterOfPosition(sourceFile, pos1).line === ts.getLineAndCharacterOfPosition(sourceFile, pos2).line;\r
+}\r
+exports.isSameLine = isSameLine;\r
+var SideEffectOptions;\r
+(function (SideEffectOptions) {\r
+ SideEffectOptions[SideEffectOptions["None"] = 0] = "None";\r
+ SideEffectOptions[SideEffectOptions["TaggedTemplate"] = 1] = "TaggedTemplate";\r
+ SideEffectOptions[SideEffectOptions["Constructor"] = 2] = "Constructor";\r
+ SideEffectOptions[SideEffectOptions["JsxElement"] = 4] = "JsxElement";\r
+})(SideEffectOptions = exports.SideEffectOptions || (exports.SideEffectOptions = {}));\r
+function hasSideEffects(node, options) {\r
+ var _a, _b;\r
+ const queue = [];\r
+ while (true) {\r
+ switch (node.kind) {\r
+ case ts.SyntaxKind.CallExpression:\r
+ case ts.SyntaxKind.PostfixUnaryExpression:\r
+ case ts.SyntaxKind.AwaitExpression:\r
+ case ts.SyntaxKind.YieldExpression:\r
+ case ts.SyntaxKind.DeleteExpression:\r
+ return true;\r
+ case ts.SyntaxKind.TypeAssertionExpression:\r
+ case ts.SyntaxKind.AsExpression:\r
+ case ts.SyntaxKind.ParenthesizedExpression:\r
+ case ts.SyntaxKind.NonNullExpression:\r
+ case ts.SyntaxKind.VoidExpression:\r
+ case ts.SyntaxKind.TypeOfExpression:\r
+ case ts.SyntaxKind.PropertyAccessExpression:\r
+ case ts.SyntaxKind.SpreadElement:\r
+ case ts.SyntaxKind.PartiallyEmittedExpression:\r
+ node = node.expression;\r
+ continue;\r
+ case ts.SyntaxKind.BinaryExpression:\r
+ if (isAssignmentKind(node.operatorToken.kind))\r
+ return true;\r
+ queue.push(node.right);\r
+ node = node.left;\r
+ continue;\r
+ case ts.SyntaxKind.PrefixUnaryExpression:\r
+ switch (node.operator) {\r
+ case ts.SyntaxKind.PlusPlusToken:\r
+ case ts.SyntaxKind.MinusMinusToken:\r
+ return true;\r
+ default:\r
+ node = node.operand;\r
+ continue;\r
+ }\r
+ case ts.SyntaxKind.ElementAccessExpression:\r
+ if (node.argumentExpression !== undefined) // for compatibility with typescript@<2.9.0\r
+ queue.push(node.argumentExpression);\r
+ node = node.expression;\r
+ continue;\r
+ case ts.SyntaxKind.ConditionalExpression:\r
+ queue.push(node.whenTrue, node.whenFalse);\r
+ node = node.condition;\r
+ continue;\r
+ case ts.SyntaxKind.NewExpression:\r
+ if (options & 2 /* Constructor */)\r
+ return true;\r
+ if (node.arguments !== undefined)\r
+ queue.push(...node.arguments);\r
+ node = node.expression;\r
+ continue;\r
+ case ts.SyntaxKind.TaggedTemplateExpression:\r
+ if (options & 1 /* TaggedTemplate */)\r
+ return true;\r
+ queue.push(node.tag);\r
+ node = node.template;\r
+ if (node.kind === ts.SyntaxKind.NoSubstitutionTemplateLiteral)\r
+ break;\r
+ // falls through\r
+ case ts.SyntaxKind.TemplateExpression:\r
+ for (const child of node.templateSpans)\r
+ queue.push(child.expression);\r
+ break;\r
+ case ts.SyntaxKind.ClassExpression: {\r
+ if (node.decorators !== undefined)\r
+ return true;\r
+ for (const child of node.members) {\r
+ if (child.decorators !== undefined)\r
+ return true;\r
+ if (!hasModifier(child.modifiers, ts.SyntaxKind.DeclareKeyword)) {\r
+ if (((_a = child.name) === null || _a === void 0 ? void 0 : _a.kind) === ts.SyntaxKind.ComputedPropertyName)\r
+ queue.push(child.name.expression);\r
+ if (node_1.isMethodDeclaration(child)) {\r
+ for (const p of child.parameters)\r
+ if (p.decorators !== undefined)\r
+ return true;\r
+ }\r
+ else if (node_1.isPropertyDeclaration(child) &&\r
+ child.initializer !== undefined &&\r
+ hasModifier(child.modifiers, ts.SyntaxKind.StaticKeyword)) {\r
+ queue.push(child.initializer);\r
+ }\r
+ }\r
+ }\r
+ const base = getBaseOfClassLikeExpression(node);\r
+ if (base === undefined)\r
+ break;\r
+ node = base.expression;\r
+ continue;\r
+ }\r
+ case ts.SyntaxKind.ArrayLiteralExpression:\r
+ queue.push(...node.elements);\r
+ break;\r
+ case ts.SyntaxKind.ObjectLiteralExpression:\r
+ for (const child of node.properties) {\r
+ if (((_b = child.name) === null || _b === void 0 ? void 0 : _b.kind) === ts.SyntaxKind.ComputedPropertyName)\r
+ queue.push(child.name.expression);\r
+ switch (child.kind) {\r
+ case ts.SyntaxKind.PropertyAssignment:\r
+ queue.push(child.initializer);\r
+ break;\r
+ case ts.SyntaxKind.SpreadAssignment:\r
+ queue.push(child.expression);\r
+ }\r
+ }\r
+ break;\r
+ case ts.SyntaxKind.JsxExpression:\r
+ if (node.expression === undefined)\r
+ break;\r
+ node = node.expression;\r
+ continue;\r
+ case ts.SyntaxKind.JsxElement:\r
+ case ts.SyntaxKind.JsxFragment:\r
+ for (const child of node.children)\r
+ if (child.kind !== ts.SyntaxKind.JsxText)\r
+ queue.push(child);\r
+ if (node.kind === ts.SyntaxKind.JsxFragment)\r
+ break;\r
+ node = node.openingElement;\r
+ // falls through\r
+ case ts.SyntaxKind.JsxSelfClosingElement:\r
+ case ts.SyntaxKind.JsxOpeningElement:\r
+ if (options & 4 /* JsxElement */)\r
+ return true;\r
+ for (const child of node.attributes.properties) {\r
+ if (child.kind === ts.SyntaxKind.JsxSpreadAttribute) {\r
+ queue.push(child.expression);\r
+ }\r
+ else if (child.initializer !== undefined) {\r
+ queue.push(child.initializer);\r
+ }\r
+ }\r
+ break;\r
+ case ts.SyntaxKind.CommaListExpression:\r
+ queue.push(...node.elements);\r
+ }\r
+ if (queue.length === 0)\r
+ return false;\r
+ node = queue.pop();\r
+ }\r
+}\r
+exports.hasSideEffects = hasSideEffects;\r
+/** Returns the VariableDeclaration or ParameterDeclaration that contains the BindingElement */\r
+function getDeclarationOfBindingElement(node) {\r
+ let parent = node.parent.parent;\r
+ while (parent.kind === ts.SyntaxKind.BindingElement)\r
+ parent = parent.parent.parent;\r
+ return parent;\r
+}\r
+exports.getDeclarationOfBindingElement = getDeclarationOfBindingElement;\r
+function isExpressionValueUsed(node) {\r
+ while (true) {\r
+ const parent = node.parent;\r
+ switch (parent.kind) {\r
+ case ts.SyntaxKind.CallExpression:\r
+ case ts.SyntaxKind.NewExpression:\r
+ case ts.SyntaxKind.ElementAccessExpression:\r
+ case ts.SyntaxKind.WhileStatement:\r
+ case ts.SyntaxKind.DoStatement:\r
+ case ts.SyntaxKind.WithStatement:\r
+ case ts.SyntaxKind.ThrowStatement:\r
+ case ts.SyntaxKind.ReturnStatement:\r
+ case ts.SyntaxKind.JsxExpression:\r
+ case ts.SyntaxKind.JsxSpreadAttribute:\r
+ case ts.SyntaxKind.JsxElement:\r
+ case ts.SyntaxKind.JsxFragment:\r
+ case ts.SyntaxKind.JsxSelfClosingElement:\r
+ case ts.SyntaxKind.ComputedPropertyName:\r
+ case ts.SyntaxKind.ArrowFunction:\r
+ case ts.SyntaxKind.ExportSpecifier:\r
+ case ts.SyntaxKind.ExportAssignment:\r
+ case ts.SyntaxKind.ImportDeclaration:\r
+ case ts.SyntaxKind.ExternalModuleReference:\r
+ case ts.SyntaxKind.Decorator:\r
+ case ts.SyntaxKind.TaggedTemplateExpression:\r
+ case ts.SyntaxKind.TemplateSpan:\r
+ case ts.SyntaxKind.ExpressionWithTypeArguments:\r
+ case ts.SyntaxKind.TypeOfExpression:\r
+ case ts.SyntaxKind.AwaitExpression:\r
+ case ts.SyntaxKind.YieldExpression:\r
+ case ts.SyntaxKind.LiteralType:\r
+ case ts.SyntaxKind.JsxAttributes:\r
+ case ts.SyntaxKind.JsxOpeningElement:\r
+ case ts.SyntaxKind.JsxClosingElement:\r
+ case ts.SyntaxKind.IfStatement:\r
+ case ts.SyntaxKind.CaseClause:\r
+ case ts.SyntaxKind.SwitchStatement:\r
+ return true;\r
+ case ts.SyntaxKind.PropertyAccessExpression:\r
+ return parent.expression === node;\r
+ case ts.SyntaxKind.QualifiedName:\r
+ return parent.left === node;\r
+ case ts.SyntaxKind.ShorthandPropertyAssignment:\r
+ return parent.objectAssignmentInitializer === node ||\r
+ !isInDestructuringAssignment(parent);\r
+ case ts.SyntaxKind.PropertyAssignment:\r
+ return parent.initializer === node && !isInDestructuringAssignment(parent);\r
+ case ts.SyntaxKind.SpreadAssignment:\r
+ case ts.SyntaxKind.SpreadElement:\r
+ case ts.SyntaxKind.ArrayLiteralExpression:\r
+ return !isInDestructuringAssignment(parent);\r
+ case ts.SyntaxKind.ParenthesizedExpression:\r
+ case ts.SyntaxKind.AsExpression:\r
+ case ts.SyntaxKind.TypeAssertionExpression:\r
+ case ts.SyntaxKind.PostfixUnaryExpression:\r
+ case ts.SyntaxKind.PrefixUnaryExpression:\r
+ case ts.SyntaxKind.NonNullExpression:\r
+ node = parent;\r
+ continue;\r
+ case ts.SyntaxKind.ForStatement:\r
+ return parent.condition === node;\r
+ case ts.SyntaxKind.ForInStatement:\r
+ case ts.SyntaxKind.ForOfStatement:\r
+ return parent.expression === node;\r
+ case ts.SyntaxKind.ConditionalExpression:\r
+ if (parent.condition === node)\r
+ return true;\r
+ node = parent;\r
+ break;\r
+ case ts.SyntaxKind.PropertyDeclaration:\r
+ case ts.SyntaxKind.BindingElement:\r
+ case ts.SyntaxKind.VariableDeclaration:\r
+ case ts.SyntaxKind.Parameter:\r
+ case ts.SyntaxKind.EnumMember:\r
+ return parent.initializer === node;\r
+ case ts.SyntaxKind.ImportEqualsDeclaration:\r
+ return parent.moduleReference === node;\r
+ case ts.SyntaxKind.CommaListExpression:\r
+ if (parent.elements[parent.elements.length - 1] !== node)\r
+ return false;\r
+ node = parent;\r
+ break;\r
+ case ts.SyntaxKind.BinaryExpression:\r
+ if (parent.right === node) {\r
+ if (parent.operatorToken.kind === ts.SyntaxKind.CommaToken) {\r
+ node = parent;\r
+ break;\r
+ }\r
+ return true;\r
+ }\r
+ switch (parent.operatorToken.kind) {\r
+ case ts.SyntaxKind.CommaToken:\r
+ case ts.SyntaxKind.EqualsToken:\r
+ return false;\r
+ case ts.SyntaxKind.EqualsEqualsEqualsToken:\r
+ case ts.SyntaxKind.EqualsEqualsToken:\r
+ case ts.SyntaxKind.ExclamationEqualsEqualsToken:\r
+ case ts.SyntaxKind.ExclamationEqualsToken:\r
+ case ts.SyntaxKind.InstanceOfKeyword:\r
+ case ts.SyntaxKind.PlusToken:\r
+ case ts.SyntaxKind.MinusToken:\r
+ case ts.SyntaxKind.AsteriskToken:\r
+ case ts.SyntaxKind.SlashToken:\r
+ case ts.SyntaxKind.PercentToken:\r
+ case ts.SyntaxKind.AsteriskAsteriskToken:\r
+ case ts.SyntaxKind.GreaterThanToken:\r
+ case ts.SyntaxKind.GreaterThanGreaterThanToken:\r
+ case ts.SyntaxKind.GreaterThanGreaterThanGreaterThanToken:\r
+ case ts.SyntaxKind.GreaterThanEqualsToken:\r
+ case ts.SyntaxKind.LessThanToken:\r
+ case ts.SyntaxKind.LessThanLessThanToken:\r
+ case ts.SyntaxKind.LessThanEqualsToken:\r
+ case ts.SyntaxKind.AmpersandToken:\r
+ case ts.SyntaxKind.BarToken:\r
+ case ts.SyntaxKind.CaretToken:\r
+ case ts.SyntaxKind.BarBarToken:\r
+ case ts.SyntaxKind.AmpersandAmpersandToken:\r
+ case ts.SyntaxKind.QuestionQuestionToken:\r
+ case ts.SyntaxKind.InKeyword:\r
+ case ts.SyntaxKind.QuestionQuestionEqualsToken:\r
+ case ts.SyntaxKind.AmpersandAmpersandEqualsToken:\r
+ case ts.SyntaxKind.BarBarEqualsToken:\r
+ return true;\r
+ default:\r
+ node = parent;\r
+ }\r
+ break;\r
+ default:\r
+ return false;\r
+ }\r
+ }\r
+}\r
+exports.isExpressionValueUsed = isExpressionValueUsed;\r
+function isInDestructuringAssignment(node) {\r
+ switch (node.kind) {\r
+ case ts.SyntaxKind.ShorthandPropertyAssignment:\r
+ if (node.objectAssignmentInitializer !== undefined)\r
+ return true;\r
+ // falls through\r
+ case ts.SyntaxKind.PropertyAssignment:\r
+ case ts.SyntaxKind.SpreadAssignment:\r
+ node = node.parent;\r
+ break;\r
+ case ts.SyntaxKind.SpreadElement:\r
+ if (node.parent.kind !== ts.SyntaxKind.ArrayLiteralExpression)\r
+ return false;\r
+ node = node.parent;\r
+ }\r
+ while (true) {\r
+ switch (node.parent.kind) {\r
+ case ts.SyntaxKind.BinaryExpression:\r
+ return node.parent.left === node &&\r
+ node.parent.operatorToken.kind === ts.SyntaxKind.EqualsToken;\r
+ case ts.SyntaxKind.ForOfStatement:\r
+ return node.parent.initializer === node;\r
+ case ts.SyntaxKind.ArrayLiteralExpression:\r
+ case ts.SyntaxKind.ObjectLiteralExpression:\r
+ node = node.parent;\r
+ break;\r
+ case ts.SyntaxKind.SpreadAssignment:\r
+ case ts.SyntaxKind.PropertyAssignment:\r
+ node = node.parent.parent;\r
+ break;\r
+ case ts.SyntaxKind.SpreadElement:\r
+ if (node.parent.parent.kind !== ts.SyntaxKind.ArrayLiteralExpression)\r
+ return false;\r
+ node = node.parent.parent;\r
+ break;\r
+ default:\r
+ return false;\r
+ }\r
+ }\r
+}\r
+var AccessKind;\r
+(function (AccessKind) {\r
+ AccessKind[AccessKind["None"] = 0] = "None";\r
+ AccessKind[AccessKind["Read"] = 1] = "Read";\r
+ AccessKind[AccessKind["Write"] = 2] = "Write";\r
+ AccessKind[AccessKind["Delete"] = 4] = "Delete";\r
+ AccessKind[AccessKind["ReadWrite"] = 3] = "ReadWrite";\r
+ AccessKind[AccessKind["Modification"] = 6] = "Modification";\r
+})(AccessKind = exports.AccessKind || (exports.AccessKind = {}));\r
+function getAccessKind(node) {\r
+ const parent = node.parent;\r
+ switch (parent.kind) {\r
+ case ts.SyntaxKind.DeleteExpression:\r
+ return 4 /* Delete */;\r
+ case ts.SyntaxKind.PostfixUnaryExpression:\r
+ return 3 /* ReadWrite */;\r
+ case ts.SyntaxKind.PrefixUnaryExpression:\r
+ return parent.operator === ts.SyntaxKind.PlusPlusToken ||\r
+ parent.operator === ts.SyntaxKind.MinusMinusToken\r
+ ? 3 /* ReadWrite */\r
+ : 1 /* Read */;\r
+ case ts.SyntaxKind.BinaryExpression:\r
+ return parent.right === node\r
+ ? 1 /* Read */\r
+ : !isAssignmentKind(parent.operatorToken.kind)\r
+ ? 1 /* Read */\r
+ : parent.operatorToken.kind === ts.SyntaxKind.EqualsToken\r
+ ? 2 /* Write */\r
+ : 3 /* ReadWrite */;\r
+ case ts.SyntaxKind.ShorthandPropertyAssignment:\r
+ return parent.objectAssignmentInitializer === node\r
+ ? 1 /* Read */\r
+ : isInDestructuringAssignment(parent)\r
+ ? 2 /* Write */\r
+ : 1 /* Read */;\r
+ case ts.SyntaxKind.PropertyAssignment:\r
+ return parent.name === node\r
+ ? 0 /* None */\r
+ : isInDestructuringAssignment(parent)\r
+ ? 2 /* Write */\r
+ : 1 /* Read */;\r
+ case ts.SyntaxKind.ArrayLiteralExpression:\r
+ case ts.SyntaxKind.SpreadElement:\r
+ case ts.SyntaxKind.SpreadAssignment:\r
+ return isInDestructuringAssignment(parent)\r
+ ? 2 /* Write */\r
+ : 1 /* Read */;\r
+ case ts.SyntaxKind.ParenthesizedExpression:\r
+ case ts.SyntaxKind.NonNullExpression:\r
+ case ts.SyntaxKind.TypeAssertionExpression:\r
+ case ts.SyntaxKind.AsExpression:\r
+ // (<number>foo! as {})++\r
+ return getAccessKind(parent);\r
+ case ts.SyntaxKind.ForOfStatement:\r
+ case ts.SyntaxKind.ForInStatement:\r
+ return parent.initializer === node\r
+ ? 2 /* Write */\r
+ : 1 /* Read */;\r
+ case ts.SyntaxKind.ExpressionWithTypeArguments:\r
+ return parent.parent.token === ts.SyntaxKind.ExtendsKeyword &&\r
+ parent.parent.parent.kind !== ts.SyntaxKind.InterfaceDeclaration\r
+ ? 1 /* Read */\r
+ : 0 /* None */;\r
+ case ts.SyntaxKind.ComputedPropertyName:\r
+ case ts.SyntaxKind.ExpressionStatement:\r
+ case ts.SyntaxKind.TypeOfExpression:\r
+ case ts.SyntaxKind.ElementAccessExpression:\r
+ case ts.SyntaxKind.ForStatement:\r
+ case ts.SyntaxKind.IfStatement:\r
+ case ts.SyntaxKind.DoStatement:\r
+ case ts.SyntaxKind.WhileStatement:\r
+ case ts.SyntaxKind.SwitchStatement:\r
+ case ts.SyntaxKind.WithStatement:\r
+ case ts.SyntaxKind.ThrowStatement:\r
+ case ts.SyntaxKind.CallExpression:\r
+ case ts.SyntaxKind.NewExpression:\r
+ case ts.SyntaxKind.TaggedTemplateExpression:\r
+ case ts.SyntaxKind.JsxExpression:\r
+ case ts.SyntaxKind.Decorator:\r
+ case ts.SyntaxKind.TemplateSpan:\r
+ case ts.SyntaxKind.JsxOpeningElement:\r
+ case ts.SyntaxKind.JsxSelfClosingElement:\r
+ case ts.SyntaxKind.JsxSpreadAttribute:\r
+ case ts.SyntaxKind.VoidExpression:\r
+ case ts.SyntaxKind.ReturnStatement:\r
+ case ts.SyntaxKind.AwaitExpression:\r
+ case ts.SyntaxKind.YieldExpression:\r
+ case ts.SyntaxKind.ConditionalExpression:\r
+ case ts.SyntaxKind.CaseClause:\r
+ case ts.SyntaxKind.JsxElement:\r
+ return 1 /* Read */;\r
+ case ts.SyntaxKind.ArrowFunction:\r
+ return parent.body === node\r
+ ? 1 /* Read */\r
+ : 2 /* Write */;\r
+ case ts.SyntaxKind.PropertyDeclaration:\r
+ case ts.SyntaxKind.VariableDeclaration:\r
+ case ts.SyntaxKind.Parameter:\r
+ case ts.SyntaxKind.EnumMember:\r
+ case ts.SyntaxKind.BindingElement:\r
+ case ts.SyntaxKind.JsxAttribute:\r
+ return parent.initializer === node\r
+ ? 1 /* Read */\r
+ : 0 /* None */;\r
+ case ts.SyntaxKind.PropertyAccessExpression:\r
+ return parent.expression === node\r
+ ? 1 /* Read */\r
+ : 0 /* None */;\r
+ case ts.SyntaxKind.ExportAssignment:\r
+ return parent.isExportEquals\r
+ ? 1 /* Read */\r
+ : 0 /* None */;\r
+ }\r
+ return 0 /* None */;\r
+}\r
+exports.getAccessKind = getAccessKind;\r
+function isReassignmentTarget(node) {\r
+ return (getAccessKind(node) & 2 /* Write */) !== 0;\r
+}\r
+exports.isReassignmentTarget = isReassignmentTarget;\r
+function canHaveJsDoc(node) {\r
+ const kind = node.kind;\r
+ switch (kind) {\r
+ case ts.SyntaxKind.Parameter:\r
+ case ts.SyntaxKind.CallSignature:\r
+ case ts.SyntaxKind.ConstructSignature:\r
+ case ts.SyntaxKind.MethodSignature:\r
+ case ts.SyntaxKind.PropertySignature:\r
+ case ts.SyntaxKind.ArrowFunction:\r
+ case ts.SyntaxKind.ParenthesizedExpression:\r
+ case ts.SyntaxKind.SpreadAssignment:\r
+ case ts.SyntaxKind.ShorthandPropertyAssignment:\r
+ case ts.SyntaxKind.PropertyAssignment:\r
+ case ts.SyntaxKind.FunctionExpression:\r
+ case ts.SyntaxKind.LabeledStatement:\r
+ case ts.SyntaxKind.ExpressionStatement:\r
+ case ts.SyntaxKind.VariableStatement:\r
+ case ts.SyntaxKind.FunctionDeclaration:\r
+ case ts.SyntaxKind.Constructor:\r
+ case ts.SyntaxKind.MethodDeclaration:\r
+ case ts.SyntaxKind.PropertyDeclaration:\r
+ case ts.SyntaxKind.GetAccessor:\r
+ case ts.SyntaxKind.SetAccessor:\r
+ case ts.SyntaxKind.ClassDeclaration:\r
+ case ts.SyntaxKind.ClassExpression:\r
+ case ts.SyntaxKind.InterfaceDeclaration:\r
+ case ts.SyntaxKind.TypeAliasDeclaration:\r
+ case ts.SyntaxKind.EnumMember:\r
+ case ts.SyntaxKind.EnumDeclaration:\r
+ case ts.SyntaxKind.ModuleDeclaration:\r
+ case ts.SyntaxKind.ImportEqualsDeclaration:\r
+ case ts.SyntaxKind.ImportDeclaration:\r
+ case ts.SyntaxKind.NamespaceExportDeclaration:\r
+ case ts.SyntaxKind.ExportAssignment:\r
+ case ts.SyntaxKind.IndexSignature:\r
+ case ts.SyntaxKind.FunctionType:\r
+ case ts.SyntaxKind.ConstructorType:\r
+ case ts.SyntaxKind.JSDocFunctionType:\r
+ case ts.SyntaxKind.ExportDeclaration:\r
+ case ts.SyntaxKind.NamedTupleMember:\r
+ case ts.SyntaxKind.EndOfFileToken:\r
+ return true;\r
+ default:\r
+ return false;\r
+ }\r
+}\r
+exports.canHaveJsDoc = canHaveJsDoc;\r
+/** Gets the JSDoc of a node. For performance reasons this function should only be called when `canHaveJsDoc` returns true. */\r
+function getJsDoc(node, sourceFile) {\r
+ const result = [];\r
+ for (const child of node.getChildren(sourceFile)) {\r
+ if (!node_1.isJsDoc(child))\r
+ break;\r
+ result.push(child);\r
+ }\r
+ return result;\r
+}\r
+exports.getJsDoc = getJsDoc;\r
+/**\r
+ * Parses the JsDoc of any node. This function is made for nodes that don't get their JsDoc parsed by the TypeScript parser.\r
+ *\r
+ * @param considerTrailingComments When set to `true` this function uses the trailing comments if the node starts on the same line\r
+ * as the previous node ends.\r
+ */\r
+function parseJsDocOfNode(node, considerTrailingComments, sourceFile = node.getSourceFile()) {\r
+ if (canHaveJsDoc(node) && node.kind !== ts.SyntaxKind.EndOfFileToken) {\r
+ const result = getJsDoc(node, sourceFile);\r
+ if (result.length !== 0 || !considerTrailingComments)\r
+ return result;\r
+ }\r
+ return parseJsDocWorker(node, node.getStart(sourceFile), sourceFile, considerTrailingComments);\r
+}\r
+exports.parseJsDocOfNode = parseJsDocOfNode;\r
+function parseJsDocWorker(node, nodeStart, sourceFile, considerTrailingComments) {\r
+ const start = ts[considerTrailingComments && isSameLine(sourceFile, node.pos, nodeStart)\r
+ ? 'forEachTrailingCommentRange'\r
+ : 'forEachLeadingCommentRange'](sourceFile.text, node.pos, \r
+ // return object to make `0` a truthy value\r
+ (pos, _end, kind) => kind === ts.SyntaxKind.MultiLineCommentTrivia && sourceFile.text[pos + 2] === '*' ? { pos } : undefined);\r
+ if (start === undefined)\r
+ return [];\r
+ const startPos = start.pos;\r
+ const text = sourceFile.text.slice(startPos, nodeStart);\r
+ const newSourceFile = ts.createSourceFile('jsdoc.ts', `${text}var a;`, sourceFile.languageVersion);\r
+ const result = getJsDoc(newSourceFile.statements[0], newSourceFile);\r
+ for (const doc of result)\r
+ updateNode(doc, node);\r
+ return result;\r
+ function updateNode(n, parent) {\r
+ n.pos += startPos;\r
+ n.end += startPos;\r
+ n.parent = parent;\r
+ return ts.forEachChild(n, (child) => updateNode(child, n), (children) => {\r
+ children.pos += startPos;\r
+ children.end += startPos;\r
+ for (const child of children)\r
+ updateNode(child, n);\r
+ });\r
+ }\r
+}\r
+var ImportKind;\r
+(function (ImportKind) {\r
+ ImportKind[ImportKind["ImportDeclaration"] = 1] = "ImportDeclaration";\r
+ ImportKind[ImportKind["ImportEquals"] = 2] = "ImportEquals";\r
+ ImportKind[ImportKind["ExportFrom"] = 4] = "ExportFrom";\r
+ ImportKind[ImportKind["DynamicImport"] = 8] = "DynamicImport";\r
+ ImportKind[ImportKind["Require"] = 16] = "Require";\r
+ ImportKind[ImportKind["ImportType"] = 32] = "ImportType";\r
+ ImportKind[ImportKind["All"] = 63] = "All";\r
+ ImportKind[ImportKind["AllImports"] = 59] = "AllImports";\r
+ ImportKind[ImportKind["AllStaticImports"] = 3] = "AllStaticImports";\r
+ ImportKind[ImportKind["AllImportExpressions"] = 24] = "AllImportExpressions";\r
+ ImportKind[ImportKind["AllRequireLike"] = 18] = "AllRequireLike";\r
+ // @internal\r
+ ImportKind[ImportKind["AllNestedImports"] = 56] = "AllNestedImports";\r
+ // @internal\r
+ ImportKind[ImportKind["AllTopLevelImports"] = 7] = "AllTopLevelImports";\r
+})(ImportKind = exports.ImportKind || (exports.ImportKind = {}));\r
+function findImports(sourceFile, kinds, ignoreFileName = true) {\r
+ const result = [];\r
+ for (const node of findImportLikeNodes(sourceFile, kinds, ignoreFileName)) {\r
+ switch (node.kind) {\r
+ case ts.SyntaxKind.ImportDeclaration:\r
+ addIfTextualLiteral(node.moduleSpecifier);\r
+ break;\r
+ case ts.SyntaxKind.ImportEqualsDeclaration:\r
+ addIfTextualLiteral(node.moduleReference.expression);\r
+ break;\r
+ case ts.SyntaxKind.ExportDeclaration:\r
+ addIfTextualLiteral(node.moduleSpecifier);\r
+ break;\r
+ case ts.SyntaxKind.CallExpression:\r
+ addIfTextualLiteral(node.arguments[0]);\r
+ break;\r
+ case ts.SyntaxKind.ImportType:\r
+ if (node_1.isLiteralTypeNode(node.argument))\r
+ addIfTextualLiteral(node.argument.literal);\r
+ break;\r
+ default:\r
+ throw new Error('unexpected node');\r
+ }\r
+ }\r
+ return result;\r
+ function addIfTextualLiteral(node) {\r
+ if (node_1.isTextualLiteral(node))\r
+ result.push(node);\r
+ }\r
+}\r
+exports.findImports = findImports;\r
+function findImportLikeNodes(sourceFile, kinds, ignoreFileName = true) {\r
+ return new ImportFinder(sourceFile, kinds, ignoreFileName).find();\r
+}\r
+exports.findImportLikeNodes = findImportLikeNodes;\r
+class ImportFinder {\r
+ constructor(_sourceFile, _options, _ignoreFileName) {\r
+ this._sourceFile = _sourceFile;\r
+ this._options = _options;\r
+ this._ignoreFileName = _ignoreFileName;\r
+ this._result = [];\r
+ }\r
+ find() {\r
+ if (this._sourceFile.isDeclarationFile)\r
+ this._options &= ~24 /* AllImportExpressions */;\r
+ if (this._options & 7 /* AllTopLevelImports */)\r
+ this._findImports(this._sourceFile.statements);\r
+ if (this._options & 56 /* AllNestedImports */)\r
+ this._findNestedImports();\r
+ return this._result;\r
+ }\r
+ _findImports(statements) {\r
+ for (const statement of statements) {\r
+ if (node_1.isImportDeclaration(statement)) {\r
+ if (this._options & 1 /* ImportDeclaration */)\r
+ this._result.push(statement);\r
+ }\r
+ else if (node_1.isImportEqualsDeclaration(statement)) {\r
+ if (this._options & 2 /* ImportEquals */ &&\r
+ statement.moduleReference.kind === ts.SyntaxKind.ExternalModuleReference)\r
+ this._result.push(statement);\r
+ }\r
+ else if (node_1.isExportDeclaration(statement)) {\r
+ if (statement.moduleSpecifier !== undefined && this._options & 4 /* ExportFrom */)\r
+ this._result.push(statement);\r
+ }\r
+ else if (node_1.isModuleDeclaration(statement)) {\r
+ this._findImportsInModule(statement);\r
+ }\r
+ }\r
+ }\r
+ _findImportsInModule(declaration) {\r
+ if (declaration.body === undefined)\r
+ return;\r
+ if (declaration.body.kind === ts.SyntaxKind.ModuleDeclaration)\r
+ return this._findImportsInModule(declaration.body);\r
+ this._findImports(declaration.body.statements);\r
+ }\r
+ _findNestedImports() {\r
+ const isJavaScriptFile = this._ignoreFileName || (this._sourceFile.flags & ts.NodeFlags.JavaScriptFile) !== 0;\r
+ let re;\r
+ let includeJsDoc;\r
+ if ((this._options & 56 /* AllNestedImports */) === 16 /* Require */) {\r
+ if (!isJavaScriptFile)\r
+ return; // don't look for 'require' in TS files\r
+ re = /\brequire\s*[</(]/g;\r
+ includeJsDoc = false;\r
+ }\r
+ else if (this._options & 16 /* Require */ && isJavaScriptFile) {\r
+ re = /\b(?:import|require)\s*[</(]/g;\r
+ includeJsDoc = (this._options & 32 /* ImportType */) !== 0;\r
+ }\r
+ else {\r
+ re = /\bimport\s*[</(]/g;\r
+ includeJsDoc = isJavaScriptFile && (this._options & 32 /* ImportType */) !== 0;\r
+ }\r
+ for (let match = re.exec(this._sourceFile.text); match !== null; match = re.exec(this._sourceFile.text)) {\r
+ const token = getTokenAtPositionWorker(this._sourceFile, match.index, this._sourceFile, \r
+ // only look for ImportTypeNode within JSDoc in JS files\r
+ match[0][0] === 'i' && includeJsDoc);\r
+ if (token.kind === ts.SyntaxKind.ImportKeyword) {\r
+ if (token.end - 'import'.length !== match.index)\r
+ continue;\r
+ switch (token.parent.kind) {\r
+ case ts.SyntaxKind.ImportType:\r
+ this._result.push(token.parent);\r
+ break;\r
+ case ts.SyntaxKind.CallExpression:\r
+ if (token.parent.arguments.length > 1)\r
+ this._result.push(token.parent);\r
+ }\r
+ }\r
+ else if (token.kind === ts.SyntaxKind.Identifier &&\r
+ token.end - 'require'.length === match.index &&\r
+ token.parent.kind === ts.SyntaxKind.CallExpression &&\r
+ token.parent.expression === token &&\r
+ token.parent.arguments.length === 1) {\r
+ this._result.push(token.parent);\r
+ }\r
+ }\r
+ }\r
+}\r
+/**\r
+ * Ambient context means the statement itself has the `declare` keyword\r
+ * or is inside a `declare namespace`, `delcare module` or `declare global`.\r
+ */\r
+function isStatementInAmbientContext(node) {\r
+ while (node.flags & ts.NodeFlags.NestedNamespace)\r
+ node = node.parent;\r
+ return hasModifier(node.modifiers, ts.SyntaxKind.DeclareKeyword) || isAmbientModuleBlock(node.parent);\r
+}\r
+exports.isStatementInAmbientContext = isStatementInAmbientContext;\r
+/** Includes `declare namespace`, `declare module` and `declare global` and namespace nested in one of the aforementioned. */\r
+function isAmbientModuleBlock(node) {\r
+ while (node.kind === ts.SyntaxKind.ModuleBlock) {\r
+ do\r
+ node = node.parent;\r
+ while (node.flags & ts.NodeFlags.NestedNamespace);\r
+ if (hasModifier(node.modifiers, ts.SyntaxKind.DeclareKeyword))\r
+ return true;\r
+ node = node.parent;\r
+ }\r
+ return false;\r
+}\r
+exports.isAmbientModuleBlock = isAmbientModuleBlock;\r
+function getIIFE(func) {\r
+ let node = func.parent;\r
+ while (node.kind === ts.SyntaxKind.ParenthesizedExpression)\r
+ node = node.parent;\r
+ return node_1.isCallExpression(node) && func.end <= node.expression.end ? node : undefined;\r
+}\r
+exports.getIIFE = getIIFE;\r
+function isStrictCompilerOptionEnabled(options, option) {\r
+ return (options.strict ? options[option] !== false : options[option] === true) &&\r
+ (option !== 'strictPropertyInitialization' || isStrictCompilerOptionEnabled(options, 'strictNullChecks'));\r
+}\r
+exports.isStrictCompilerOptionEnabled = isStrictCompilerOptionEnabled;\r
+// https://github.com/ajafff/tslint-consistent-codestyle/issues/85\r
+/**\r
+ * Checks if a given compiler option is enabled.\r
+ * It handles dependencies of options, e.g. `declaration` is implicitly enabled by `composite` or `strictNullChecks` is enabled by `strict`.\r
+ * However, it does not check dependencies that are already checked and reported as errors, e.g. `checkJs` without `allowJs`.\r
+ * This function only handles boolean flags.\r
+ */\r
+function isCompilerOptionEnabled(options, option) {\r
+ switch (option) {\r
+ case 'stripInternal':\r
+ case 'declarationMap':\r
+ case 'emitDeclarationOnly':\r
+ return options[option] === true && isCompilerOptionEnabled(options, 'declaration');\r
+ case 'declaration':\r
+ return options.declaration || isCompilerOptionEnabled(options, 'composite');\r
+ case 'incremental':\r
+ return options.incremental === undefined ? isCompilerOptionEnabled(options, 'composite') : options.incremental;\r
+ case 'skipDefaultLibCheck':\r
+ return options.skipDefaultLibCheck || isCompilerOptionEnabled(options, 'skipLibCheck');\r
+ case 'suppressImplicitAnyIndexErrors':\r
+ return options.suppressImplicitAnyIndexErrors === true && isCompilerOptionEnabled(options, 'noImplicitAny');\r
+ case 'allowSyntheticDefaultImports':\r
+ return options.allowSyntheticDefaultImports !== undefined\r
+ ? options.allowSyntheticDefaultImports\r
+ : isCompilerOptionEnabled(options, 'esModuleInterop') || options.module === ts.ModuleKind.System;\r
+ case 'noUncheckedIndexedAccess':\r
+ return options.noUncheckedIndexedAccess === true && isCompilerOptionEnabled(options, 'strictNullChecks');\r
+ case 'allowJs':\r
+ return options.allowJs === undefined ? isCompilerOptionEnabled(options, 'checkJs') : options.allowJs;\r
+ case 'noImplicitAny':\r
+ case 'noImplicitThis':\r
+ case 'strictNullChecks':\r
+ case 'strictFunctionTypes':\r
+ case 'strictPropertyInitialization':\r
+ case 'alwaysStrict':\r
+ case 'strictBindCallApply':\r
+ return isStrictCompilerOptionEnabled(options, option);\r
+ }\r
+ return options[option] === true;\r
+}\r
+exports.isCompilerOptionEnabled = isCompilerOptionEnabled;\r
+/**\r
+ * Has nothing to do with `isAmbientModuleBlock`.\r
+ *\r
+ * @returns `true` if it's a global augmentation or has a string name.\r
+ */\r
+function isAmbientModule(node) {\r
+ return node.name.kind === ts.SyntaxKind.StringLiteral || (node.flags & ts.NodeFlags.GlobalAugmentation) !== 0;\r
+}\r
+exports.isAmbientModule = isAmbientModule;\r
+/**\r
+ * @deprecated use `getTsCheckDirective` instead since `// @ts-nocheck` is no longer restricted to JS files.\r
+ * @returns the last `// @ts-check` or `// @ts-nocheck` directive in the given file.\r
+ */\r
+function getCheckJsDirective(source) {\r
+ return getTsCheckDirective(source);\r
+}\r
+exports.getCheckJsDirective = getCheckJsDirective;\r
+/** @returns the last `// @ts-check` or `// @ts-nocheck` directive in the given file. */\r
+function getTsCheckDirective(source) {\r
+ let directive;\r
+ // needs to work around a shebang issue until https://github.com/Microsoft/TypeScript/issues/28477 is resolved\r
+ ts.forEachLeadingCommentRange(source, (ts.getShebang(source) || '').length, (pos, end, kind) => {\r
+ if (kind === ts.SyntaxKind.SingleLineCommentTrivia) {\r
+ const text = source.slice(pos, end);\r
+ const match = /^\/{2,3}\s*@ts-(no)?check(?:\s|$)/i.exec(text);\r
+ if (match !== null)\r
+ directive = { pos, end, enabled: match[1] === undefined };\r
+ }\r
+ });\r
+ return directive;\r
+}\r
+exports.getTsCheckDirective = getTsCheckDirective;\r
+function isConstAssertion(node) {\r
+ return node_1.isTypeReferenceNode(node.type) &&\r
+ node.type.typeName.kind === ts.SyntaxKind.Identifier &&\r
+ node.type.typeName.escapedText === 'const';\r
+}\r
+exports.isConstAssertion = isConstAssertion;\r
+/** Detects whether an expression is affected by an enclosing 'as const' assertion and therefore treated literally. */\r
+function isInConstContext(node) {\r
+ let current = node;\r
+ while (true) {\r
+ const parent = current.parent;\r
+ outer: switch (parent.kind) {\r
+ case ts.SyntaxKind.TypeAssertionExpression:\r
+ case ts.SyntaxKind.AsExpression:\r
+ return isConstAssertion(parent);\r
+ case ts.SyntaxKind.PrefixUnaryExpression:\r
+ if (current.kind !== ts.SyntaxKind.NumericLiteral)\r
+ return false;\r
+ switch (parent.operator) {\r
+ case ts.SyntaxKind.PlusToken:\r
+ case ts.SyntaxKind.MinusToken:\r
+ current = parent;\r
+ break outer;\r
+ default:\r
+ return false;\r
+ }\r
+ case ts.SyntaxKind.PropertyAssignment:\r
+ if (parent.initializer !== current)\r
+ return false;\r
+ current = parent.parent;\r
+ break;\r
+ case ts.SyntaxKind.ShorthandPropertyAssignment:\r
+ current = parent.parent;\r
+ break;\r
+ case ts.SyntaxKind.ParenthesizedExpression:\r
+ case ts.SyntaxKind.ArrayLiteralExpression:\r
+ case ts.SyntaxKind.ObjectLiteralExpression:\r
+ case ts.SyntaxKind.TemplateExpression:\r
+ current = parent;\r
+ break;\r
+ default:\r
+ return false;\r
+ }\r
+ }\r
+}\r
+exports.isInConstContext = isInConstContext;\r
+/** Returns true for `Object.defineProperty(o, 'prop', {value, writable: false})` and `Object.defineProperty(o, 'prop', {get: () => 1})`*/\r
+function isReadonlyAssignmentDeclaration(node, checker) {\r
+ if (!isBindableObjectDefinePropertyCall(node))\r
+ return false;\r
+ const descriptorType = checker.getTypeAtLocation(node.arguments[2]);\r
+ if (descriptorType.getProperty('value') === undefined)\r
+ return descriptorType.getProperty('set') === undefined;\r
+ const writableProp = descriptorType.getProperty('writable');\r
+ if (writableProp === undefined)\r
+ return false;\r
+ const writableType = writableProp.valueDeclaration !== undefined && node_1.isPropertyAssignment(writableProp.valueDeclaration)\r
+ ? checker.getTypeAtLocation(writableProp.valueDeclaration.initializer)\r
+ : checker.getTypeOfSymbolAtLocation(writableProp, node.arguments[2]);\r
+ return type_1.isBooleanLiteralType(writableType, false);\r
+}\r
+exports.isReadonlyAssignmentDeclaration = isReadonlyAssignmentDeclaration;\r
+/** Determines whether a call to `Object.defineProperty` is statically analyzable. */\r
+function isBindableObjectDefinePropertyCall(node) {\r
+ return node.arguments.length === 3 &&\r
+ node_1.isEntityNameExpression(node.arguments[0]) &&\r
+ node_1.isNumericOrStringLikeLiteral(node.arguments[1]) &&\r
+ node_1.isPropertyAccessExpression(node.expression) &&\r
+ node.expression.name.escapedText === 'defineProperty' &&\r
+ node_1.isIdentifier(node.expression.expression) &&\r
+ node.expression.expression.escapedText === 'Object';\r
+}\r
+exports.isBindableObjectDefinePropertyCall = isBindableObjectDefinePropertyCall;\r
+function isWellKnownSymbolLiterally(node) {\r
+ return ts.isPropertyAccessExpression(node) &&\r
+ ts.isIdentifier(node.expression) &&\r
+ node.expression.escapedText === 'Symbol';\r
+}\r
+exports.isWellKnownSymbolLiterally = isWellKnownSymbolLiterally;\r
+/** @deprecated typescript 4.3 removed the concept of literal well known symbols. Use `getPropertyNameFromType` instead. */\r
+function getPropertyNameOfWellKnownSymbol(node) {\r
+ return {\r
+ displayName: `[Symbol.${node.name.text}]`,\r
+ symbolName: ('__@' + node.name.text),\r
+ };\r
+}\r
+exports.getPropertyNameOfWellKnownSymbol = getPropertyNameOfWellKnownSymbol;\r
+const isTsBefore43 = (([major, minor]) => major < '4' || major === '4' && minor < '3')(ts.versionMajorMinor.split('.'));\r
+function getLateBoundPropertyNames(node, checker) {\r
+ const result = {\r
+ known: true,\r
+ names: [],\r
+ };\r
+ node = unwrapParentheses(node);\r
+ if (isTsBefore43 && isWellKnownSymbolLiterally(node)) {\r
+ result.names.push(getPropertyNameOfWellKnownSymbol(node)); // wotan-disable-line no-unstable-api-use\r
+ }\r
+ else {\r
+ const type = checker.getTypeAtLocation(node);\r
+ for (const key of type_1.unionTypeParts(checker.getBaseConstraintOfType(type) || type)) {\r
+ const propertyName = type_1.getPropertyNameFromType(key);\r
+ if (propertyName) {\r
+ result.names.push(propertyName);\r
+ }\r
+ else {\r
+ result.known = false;\r
+ }\r
+ }\r
+ }\r
+ return result;\r
+}\r
+exports.getLateBoundPropertyNames = getLateBoundPropertyNames;\r
+function getLateBoundPropertyNamesOfPropertyName(node, checker) {\r
+ const staticName = getPropertyName(node);\r
+ return staticName !== undefined\r
+ ? { known: true, names: [{ displayName: staticName, symbolName: ts.escapeLeadingUnderscores(staticName) }] }\r
+ : node.kind === ts.SyntaxKind.PrivateIdentifier\r
+ ? { known: true, names: [{ displayName: node.text, symbolName: checker.getSymbolAtLocation(node).escapedName }] }\r
+ : getLateBoundPropertyNames(node.expression, checker);\r
+}\r
+exports.getLateBoundPropertyNamesOfPropertyName = getLateBoundPropertyNamesOfPropertyName;\r
+/** Most declarations demand there to be only one statically known name, e.g. class members with computed name. */\r
+function getSingleLateBoundPropertyNameOfPropertyName(node, checker) {\r
+ const staticName = getPropertyName(node);\r
+ if (staticName !== undefined)\r
+ return { displayName: staticName, symbolName: ts.escapeLeadingUnderscores(staticName) };\r
+ if (node.kind === ts.SyntaxKind.PrivateIdentifier)\r
+ return { displayName: node.text, symbolName: checker.getSymbolAtLocation(node).escapedName };\r
+ const { expression } = node;\r
+ return isTsBefore43 && isWellKnownSymbolLiterally(expression)\r
+ ? getPropertyNameOfWellKnownSymbol(expression) // wotan-disable-line no-unstable-api-use\r
+ : type_1.getPropertyNameFromType(checker.getTypeAtLocation(expression));\r
+}\r
+exports.getSingleLateBoundPropertyNameOfPropertyName = getSingleLateBoundPropertyNameOfPropertyName;\r
+function unwrapParentheses(node) {\r
+ while (node.kind === ts.SyntaxKind.ParenthesizedExpression)\r
+ node = node.expression;\r
+ return node;\r
+}\r
+exports.unwrapParentheses = unwrapParentheses;\r
+function formatPseudoBigInt(v) {\r
+ return `${v.negative ? '-' : ''}${v.base10Value}n`;\r
+}\r
+exports.formatPseudoBigInt = formatPseudoBigInt;\r
+/**\r
+ * Determines whether the given `SwitchStatement`'s `case` clauses cover every possible value of the switched expression.\r
+ * The logic is the same as TypeScript's control flow analysis.\r
+ * This does **not** check whether all `case` clauses do a certain action like assign a variable or return a value.\r
+ * This function ignores the `default` clause if present.\r
+ */\r
+function hasExhaustiveCaseClauses(node, checker) {\r
+ const caseClauses = node.caseBlock.clauses.filter(node_1.isCaseClause);\r
+ if (caseClauses.length === 0)\r
+ return false;\r
+ const typeParts = type_1.unionTypeParts(checker.getTypeAtLocation(node.expression));\r
+ if (typeParts.length > caseClauses.length)\r
+ return false;\r
+ const types = new Set(typeParts.map(getPrimitiveLiteralFromType));\r
+ if (types.has(undefined))\r
+ return false;\r
+ const seen = new Set();\r
+ for (const clause of caseClauses) {\r
+ const expressionType = checker.getTypeAtLocation(clause.expression);\r
+ if (exports.isTypeFlagSet(expressionType, ts.TypeFlags.Never))\r
+ continue; // additional case clause with 'never' is always allowed\r
+ const type = getPrimitiveLiteralFromType(expressionType);\r
+ if (types.has(type)) {\r
+ seen.add(type);\r
+ }\r
+ else if (type !== 'null' && type !== 'undefined') { // additional case clauses with 'null' and 'undefined' are always allowed\r
+ return false;\r
+ }\r
+ }\r
+ return types.size === seen.size;\r
+}\r
+exports.hasExhaustiveCaseClauses = hasExhaustiveCaseClauses;\r
+function getPrimitiveLiteralFromType(t) {\r
+ if (exports.isTypeFlagSet(t, ts.TypeFlags.Null))\r
+ return 'null';\r
+ if (exports.isTypeFlagSet(t, ts.TypeFlags.Undefined))\r
+ return 'undefined';\r
+ if (exports.isTypeFlagSet(t, ts.TypeFlags.NumberLiteral))\r
+ return `${exports.isTypeFlagSet(t, ts.TypeFlags.EnumLiteral) ? 'enum:' : ''}${t.value}`;\r
+ if (exports.isTypeFlagSet(t, ts.TypeFlags.StringLiteral))\r
+ return `${exports.isTypeFlagSet(t, ts.TypeFlags.EnumLiteral) ? 'enum:' : ''}string:${t.value}`;\r
+ if (exports.isTypeFlagSet(t, ts.TypeFlags.BigIntLiteral))\r
+ return formatPseudoBigInt(t.value);\r
+ if (_3_2_1.isUniqueESSymbolType(t))\r
+ return t.escapedName;\r
+ if (type_1.isBooleanLiteralType(t, true))\r
+ return 'true';\r
+ if (type_1.isBooleanLiteralType(t, false))\r
+ return 'false';\r
+}\r
+function getBaseOfClassLikeExpression(node) {\r
+ var _a;\r
+ if (((_a = node.heritageClauses) === null || _a === void 0 ? void 0 : _a[0].token) === ts.SyntaxKind.ExtendsKeyword)\r
+ return node.heritageClauses[0].types[0];\r
+}\r
+exports.getBaseOfClassLikeExpression = getBaseOfClassLikeExpression;\r
+//# sourceMappingURL=util.js.map
\ No newline at end of file
projects / dotfiles / .git / blobdiff