1686 lines
77 KiB
JavaScript
1686 lines
77 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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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;
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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;
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const ts = require("typescript");
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const node_1 = require("../typeguard/node");
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const _3_2_1 = require("../typeguard/3.2");
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const type_1 = require("./type");
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function getChildOfKind(node, kind, sourceFile) {
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for (const child of node.getChildren(sourceFile))
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if (child.kind === kind)
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return child;
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}
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exports.getChildOfKind = getChildOfKind;
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function isTokenKind(kind) {
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return kind >= ts.SyntaxKind.FirstToken && kind <= ts.SyntaxKind.LastToken;
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}
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exports.isTokenKind = isTokenKind;
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function isNodeKind(kind) {
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return kind >= ts.SyntaxKind.FirstNode;
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}
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exports.isNodeKind = isNodeKind;
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function isAssignmentKind(kind) {
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return kind >= ts.SyntaxKind.FirstAssignment && kind <= ts.SyntaxKind.LastAssignment;
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}
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exports.isAssignmentKind = isAssignmentKind;
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function isTypeNodeKind(kind) {
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return kind >= ts.SyntaxKind.FirstTypeNode && kind <= ts.SyntaxKind.LastTypeNode;
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}
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exports.isTypeNodeKind = isTypeNodeKind;
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function isJsDocKind(kind) {
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return kind >= ts.SyntaxKind.FirstJSDocNode && kind <= ts.SyntaxKind.LastJSDocNode;
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}
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exports.isJsDocKind = isJsDocKind;
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function isKeywordKind(kind) {
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return kind >= ts.SyntaxKind.FirstKeyword && kind <= ts.SyntaxKind.LastKeyword;
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}
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exports.isKeywordKind = isKeywordKind;
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function isThisParameter(parameter) {
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return parameter.name.kind === ts.SyntaxKind.Identifier && parameter.name.originalKeywordKind === ts.SyntaxKind.ThisKeyword;
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}
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exports.isThisParameter = isThisParameter;
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function getModifier(node, kind) {
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if (node.modifiers !== undefined)
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for (const modifier of node.modifiers)
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if (modifier.kind === kind)
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return modifier;
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}
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exports.getModifier = getModifier;
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function hasModifier(modifiers, ...kinds) {
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if (modifiers === undefined)
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return false;
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for (const modifier of modifiers)
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if (kinds.includes(modifier.kind))
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return true;
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return false;
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}
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exports.hasModifier = hasModifier;
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function isParameterProperty(node) {
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return hasModifier(node.modifiers, ts.SyntaxKind.PublicKeyword, ts.SyntaxKind.ProtectedKeyword, ts.SyntaxKind.PrivateKeyword, ts.SyntaxKind.ReadonlyKeyword);
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}
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exports.isParameterProperty = isParameterProperty;
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function hasAccessModifier(node) {
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return isModifierFlagSet(node, ts.ModifierFlags.AccessibilityModifier);
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}
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exports.hasAccessModifier = hasAccessModifier;
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function isFlagSet(obj, flag) {
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return (obj.flags & flag) !== 0;
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}
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exports.isNodeFlagSet = isFlagSet;
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exports.isTypeFlagSet = isFlagSet;
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exports.isSymbolFlagSet = isFlagSet;
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function isObjectFlagSet(objectType, flag) {
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return (objectType.objectFlags & flag) !== 0;
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}
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exports.isObjectFlagSet = isObjectFlagSet;
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function isModifierFlagSet(node, flag) {
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return (ts.getCombinedModifierFlags(node) & flag) !== 0;
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}
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exports.isModifierFlagSet = isModifierFlagSet;
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function getPreviousStatement(statement) {
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const parent = statement.parent;
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if (node_1.isBlockLike(parent)) {
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const index = parent.statements.indexOf(statement);
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if (index > 0)
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return parent.statements[index - 1];
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}
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}
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exports.getPreviousStatement = getPreviousStatement;
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function getNextStatement(statement) {
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const parent = statement.parent;
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if (node_1.isBlockLike(parent)) {
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const index = parent.statements.indexOf(statement);
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if (index < parent.statements.length)
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return parent.statements[index + 1];
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}
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}
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exports.getNextStatement = getNextStatement;
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/** Returns the token before the start of `node` or `undefined` if there is none. */
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function getPreviousToken(node, sourceFile) {
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const { pos } = node;
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if (pos === 0)
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return;
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do
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node = node.parent;
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while (node.pos === pos);
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return getTokenAtPositionWorker(node, pos - 1, sourceFile !== null && sourceFile !== void 0 ? sourceFile : node.getSourceFile(), false);
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}
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exports.getPreviousToken = getPreviousToken;
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/** Returns the next token that begins after the end of `node`. Returns `undefined` for SourceFile and EndOfFileToken */
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function getNextToken(node, sourceFile) {
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if (node.kind === ts.SyntaxKind.SourceFile || node.kind === ts.SyntaxKind.EndOfFileToken)
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return;
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const end = node.end;
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node = node.parent;
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while (node.end === end) {
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if (node.parent === undefined)
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return node.endOfFileToken;
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node = node.parent;
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}
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return getTokenAtPositionWorker(node, end, sourceFile !== null && sourceFile !== void 0 ? sourceFile : node.getSourceFile(), false);
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}
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exports.getNextToken = getNextToken;
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/** Returns the token at or following the specified position or undefined if none is found inside `parent`. */
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function getTokenAtPosition(parent, pos, sourceFile, allowJsDoc) {
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if (pos < parent.pos || pos >= parent.end)
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return;
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if (isTokenKind(parent.kind))
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return parent;
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return getTokenAtPositionWorker(parent, pos, sourceFile !== null && sourceFile !== void 0 ? sourceFile : parent.getSourceFile(), allowJsDoc === true);
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}
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exports.getTokenAtPosition = getTokenAtPosition;
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function getTokenAtPositionWorker(node, pos, sourceFile, allowJsDoc) {
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if (!allowJsDoc) {
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// if we are not interested in JSDoc, we can skip to the deepest AST node at the given position
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node = getAstNodeAtPosition(node, pos);
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if (isTokenKind(node.kind))
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return node;
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}
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outer: while (true) {
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for (const child of node.getChildren(sourceFile)) {
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if (child.end > pos && (allowJsDoc || child.kind !== ts.SyntaxKind.JSDocComment)) {
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if (isTokenKind(child.kind))
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return child;
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// next token is nested in another node
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node = child;
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continue outer;
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}
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}
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return;
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}
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}
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/**
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* Return the comment at the specified position.
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* You can pass an optional `parent` to avoid some work finding the corresponding token starting at `sourceFile`.
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* If the `parent` parameter is passed, `pos` must be between `parent.pos` and `parent.end`.
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*/
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function getCommentAtPosition(sourceFile, pos, parent = sourceFile) {
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const token = getTokenAtPosition(parent, pos, sourceFile);
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if (token === undefined || token.kind === ts.SyntaxKind.JsxText || pos >= token.end - (ts.tokenToString(token.kind) || '').length)
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return;
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const startPos = token.pos === 0
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? (ts.getShebang(sourceFile.text) || '').length
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: token.pos;
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return startPos !== 0 && ts.forEachTrailingCommentRange(sourceFile.text, startPos, commentAtPositionCallback, pos) ||
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ts.forEachLeadingCommentRange(sourceFile.text, startPos, commentAtPositionCallback, pos);
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}
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exports.getCommentAtPosition = getCommentAtPosition;
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function commentAtPositionCallback(pos, end, kind, _nl, at) {
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return at >= pos && at < end ? { pos, end, kind } : undefined;
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}
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/**
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* Returns whether the specified position is inside a comment.
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* You can pass an optional `parent` to avoid some work finding the corresponding token starting at `sourceFile`.
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* If the `parent` parameter is passed, `pos` must be between `parent.pos` and `parent.end`.
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*/
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function isPositionInComment(sourceFile, pos, parent) {
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return getCommentAtPosition(sourceFile, pos, parent) !== undefined;
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}
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exports.isPositionInComment = isPositionInComment;
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function commentText(sourceText, comment) {
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return sourceText.substring(comment.pos + 2, comment.kind === ts.SyntaxKind.SingleLineCommentTrivia ? comment.end : comment.end - 2);
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}
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exports.commentText = commentText;
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/** Returns the deepest AST Node at `pos`. Returns undefined if `pos` is outside of the range of `node` */
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function getAstNodeAtPosition(node, pos) {
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if (node.pos > pos || node.end <= pos)
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return;
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while (isNodeKind(node.kind)) {
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const nested = ts.forEachChild(node, (child) => child.pos <= pos && child.end > pos ? child : undefined);
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if (nested === undefined)
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break;
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node = nested;
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}
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return node;
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}
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exports.getAstNodeAtPosition = getAstNodeAtPosition;
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/**
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* Returns the NodeWrap of deepest AST node that contains `pos` between its `pos` and `end`.
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* Only returns undefined if pos is outside of `wrap`
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*/
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function getWrappedNodeAtPosition(wrap, pos) {
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if (wrap.node.pos > pos || wrap.node.end <= pos)
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return;
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outer: while (true) {
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for (const child of wrap.children) {
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if (child.node.pos > pos)
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return wrap;
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if (child.node.end > pos) {
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wrap = child;
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continue outer;
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}
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}
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return wrap;
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}
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}
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exports.getWrappedNodeAtPosition = getWrappedNodeAtPosition;
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function getPropertyName(propertyName) {
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if (propertyName.kind === ts.SyntaxKind.ComputedPropertyName) {
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const expression = unwrapParentheses(propertyName.expression);
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if (node_1.isPrefixUnaryExpression(expression)) {
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let negate = false;
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switch (expression.operator) {
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case ts.SyntaxKind.MinusToken:
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negate = true;
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// falls through
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case ts.SyntaxKind.PlusToken:
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return node_1.isNumericLiteral(expression.operand)
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? `${negate ? '-' : ''}${expression.operand.text}`
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: _3_2_1.isBigIntLiteral(expression.operand)
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? `${negate ? '-' : ''}${expression.operand.text.slice(0, -1)}`
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: undefined;
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default:
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return;
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}
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}
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if (_3_2_1.isBigIntLiteral(expression))
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// handle BigInt, even though TypeScript doesn't allow BigInt as computed property name
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return expression.text.slice(0, -1);
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if (node_1.isNumericOrStringLikeLiteral(expression))
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return expression.text;
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return;
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}
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return propertyName.kind === ts.SyntaxKind.PrivateIdentifier ? undefined : propertyName.text;
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}
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exports.getPropertyName = getPropertyName;
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function forEachDestructuringIdentifier(pattern, fn) {
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for (const element of pattern.elements) {
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if (element.kind !== ts.SyntaxKind.BindingElement)
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continue;
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let result;
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if (element.name.kind === ts.SyntaxKind.Identifier) {
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result = fn(element);
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}
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else {
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result = forEachDestructuringIdentifier(element.name, fn);
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}
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if (result)
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return result;
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}
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}
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exports.forEachDestructuringIdentifier = forEachDestructuringIdentifier;
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function forEachDeclaredVariable(declarationList, cb) {
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for (const declaration of declarationList.declarations) {
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let result;
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if (declaration.name.kind === ts.SyntaxKind.Identifier) {
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result = cb(declaration);
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}
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else {
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result = forEachDestructuringIdentifier(declaration.name, cb);
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}
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if (result)
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return result;
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}
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}
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exports.forEachDeclaredVariable = forEachDeclaredVariable;
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var VariableDeclarationKind;
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(function (VariableDeclarationKind) {
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VariableDeclarationKind[VariableDeclarationKind["Var"] = 0] = "Var";
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VariableDeclarationKind[VariableDeclarationKind["Let"] = 1] = "Let";
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VariableDeclarationKind[VariableDeclarationKind["Const"] = 2] = "Const";
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})(VariableDeclarationKind = exports.VariableDeclarationKind || (exports.VariableDeclarationKind = {}));
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function getVariableDeclarationKind(declarationList) {
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if (declarationList.flags & ts.NodeFlags.Let)
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return 1 /* Let */;
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if (declarationList.flags & ts.NodeFlags.Const)
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return 2 /* Const */;
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return 0 /* Var */;
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}
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exports.getVariableDeclarationKind = getVariableDeclarationKind;
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function isBlockScopedVariableDeclarationList(declarationList) {
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return (declarationList.flags & ts.NodeFlags.BlockScoped) !== 0;
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}
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exports.isBlockScopedVariableDeclarationList = isBlockScopedVariableDeclarationList;
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function isBlockScopedVariableDeclaration(declaration) {
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const parent = declaration.parent;
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return parent.kind === ts.SyntaxKind.CatchClause ||
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isBlockScopedVariableDeclarationList(parent);
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}
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exports.isBlockScopedVariableDeclaration = isBlockScopedVariableDeclaration;
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function isBlockScopedDeclarationStatement(statement) {
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switch (statement.kind) {
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case ts.SyntaxKind.VariableStatement:
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return isBlockScopedVariableDeclarationList(statement.declarationList);
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case ts.SyntaxKind.ClassDeclaration:
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case ts.SyntaxKind.EnumDeclaration:
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case ts.SyntaxKind.InterfaceDeclaration:
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case ts.SyntaxKind.TypeAliasDeclaration:
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return true;
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default:
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return false;
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}
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}
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exports.isBlockScopedDeclarationStatement = isBlockScopedDeclarationStatement;
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function isInSingleStatementContext(statement) {
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switch (statement.parent.kind) {
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case ts.SyntaxKind.ForStatement:
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case ts.SyntaxKind.ForInStatement:
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case ts.SyntaxKind.ForOfStatement:
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case ts.SyntaxKind.WhileStatement:
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case ts.SyntaxKind.DoStatement:
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case ts.SyntaxKind.IfStatement:
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case ts.SyntaxKind.WithStatement:
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case ts.SyntaxKind.LabeledStatement:
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return true;
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default:
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return false;
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}
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}
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exports.isInSingleStatementContext = isInSingleStatementContext;
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var ScopeBoundary;
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(function (ScopeBoundary) {
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ScopeBoundary[ScopeBoundary["None"] = 0] = "None";
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ScopeBoundary[ScopeBoundary["Function"] = 1] = "Function";
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ScopeBoundary[ScopeBoundary["Block"] = 2] = "Block";
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ScopeBoundary[ScopeBoundary["Type"] = 4] = "Type";
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ScopeBoundary[ScopeBoundary["ConditionalType"] = 8] = "ConditionalType";
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})(ScopeBoundary = exports.ScopeBoundary || (exports.ScopeBoundary = {}));
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var ScopeBoundarySelector;
|
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(function (ScopeBoundarySelector) {
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ScopeBoundarySelector[ScopeBoundarySelector["Function"] = 1] = "Function";
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ScopeBoundarySelector[ScopeBoundarySelector["Block"] = 3] = "Block";
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ScopeBoundarySelector[ScopeBoundarySelector["Type"] = 7] = "Type";
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ScopeBoundarySelector[ScopeBoundarySelector["InferType"] = 8] = "InferType";
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})(ScopeBoundarySelector = exports.ScopeBoundarySelector || (exports.ScopeBoundarySelector = {}));
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function isScopeBoundary(node) {
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return isFunctionScopeBoundary(node) || isBlockScopeBoundary(node) || isTypeScopeBoundary(node);
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}
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exports.isScopeBoundary = isScopeBoundary;
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function isTypeScopeBoundary(node) {
|
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switch (node.kind) {
|
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case ts.SyntaxKind.InterfaceDeclaration:
|
|
case ts.SyntaxKind.TypeAliasDeclaration:
|
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case ts.SyntaxKind.MappedType:
|
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return 4 /* Type */;
|
|
case ts.SyntaxKind.ConditionalType:
|
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return 8 /* ConditionalType */;
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default:
|
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return 0 /* None */;
|
|
}
|
|
}
|
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exports.isTypeScopeBoundary = isTypeScopeBoundary;
|
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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:
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return 1 /* Function */;
|
|
case ts.SyntaxKind.SourceFile:
|
|
// if SourceFile is no module, it contributes to the global scope and is therefore no scope boundary
|
|
return ts.isExternalModule(node) ? 1 /* Function */ : 0 /* None */;
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|
default:
|
|
return 0 /* None */;
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}
|
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}
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|
exports.isFunctionScopeBoundary = isFunctionScopeBoundary;
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function isBlockScopeBoundary(node) {
|
|
switch (node.kind) {
|
|
case ts.SyntaxKind.Block:
|
|
const parent = node.parent;
|
|
return parent.kind !== ts.SyntaxKind.CatchClause &&
|
|
// blocks inside SourceFile are block scope boundaries
|
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(parent.kind === ts.SyntaxKind.SourceFile ||
|
|
// blocks that are direct children of a function scope boundary are no scope boundary
|
|
// for example the FunctionBlock is part of the function scope of the containing function
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!isFunctionScopeBoundary(parent))
|
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? 2 /* Block */
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: 0 /* None */;
|
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case ts.SyntaxKind.ForStatement:
|
|
case ts.SyntaxKind.ForInStatement:
|
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case ts.SyntaxKind.ForOfStatement:
|
|
case ts.SyntaxKind.CaseBlock:
|
|
case ts.SyntaxKind.CatchClause:
|
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case ts.SyntaxKind.WithStatement:
|
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return 2 /* Block */;
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default:
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return 0 /* None */;
|
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}
|
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}
|
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exports.isBlockScopeBoundary = isBlockScopeBoundary;
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|
/** Returns true for scope boundaries that have their own `this` reference instead of inheriting it from the containing scope */
|
|
function hasOwnThisReference(node) {
|
|
switch (node.kind) {
|
|
case ts.SyntaxKind.ClassDeclaration:
|
|
case ts.SyntaxKind.ClassExpression:
|
|
case ts.SyntaxKind.FunctionExpression:
|
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return true;
|
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case ts.SyntaxKind.FunctionDeclaration:
|
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return node.body !== undefined;
|
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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;
|
|
/**
|
|
* Iterate over all tokens of `node`
|
|
*
|
|
* @param node The node whose tokens should be visited
|
|
* @param cb Is called for every token contained in `node`
|
|
*/
|
|
function forEachToken(node, cb, sourceFile = node.getSourceFile()) {
|
|
const queue = [];
|
|
while (true) {
|
|
if (isTokenKind(node.kind)) {
|
|
cb(node);
|
|
}
|
|
else if (node.kind !== ts.SyntaxKind.JSDocComment) {
|
|
const children = node.getChildren(sourceFile);
|
|
if (children.length === 1) {
|
|
node = children[0];
|
|
continue;
|
|
}
|
|
for (let i = children.length - 1; i >= 0; --i)
|
|
queue.push(children[i]); // add children in reverse order, when we pop the next element from the queue, it's the first child
|
|
}
|
|
if (queue.length === 0)
|
|
break;
|
|
node = queue.pop();
|
|
}
|
|
}
|
|
exports.forEachToken = forEachToken;
|
|
/**
|
|
* Iterate over all tokens and trivia of `node`
|
|
*
|
|
* @description JsDoc comments are treated like regular comments
|
|
*
|
|
* @param node The node whose tokens should be visited
|
|
* @param cb Is called for every token contained in `node` and trivia before the token
|
|
*/
|
|
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) {
|
|
// we only have to handle trivia before each token. whitespace at the end of the file is followed by EndOfFileToken
|
|
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;
|
|
/** Iterate over all comments owned by `node` or its children */
|
|
function forEachComment(node, cb, sourceFile = node.getSourceFile()) {
|
|
/* Visit all tokens and skip trivia.
|
|
Comment ranges between tokens are parsed without the need of a scanner.
|
|
forEachTokenWithWhitespace does intentionally not pay attention to the correct comment ownership of nodes as it always
|
|
scans all trivia before each token, which could include trailing comments of the previous token.
|
|
Comment onwership is done right in this function*/
|
|
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,
|
|
// skip shebang at position 0
|
|
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;
|
|
/** Exclude trailing positions that would lead to scanning for trivia inside JsxText */
|
|
function canHaveTrailingTrivia(token) {
|
|
switch (token.kind) {
|
|
case ts.SyntaxKind.CloseBraceToken:
|
|
// after a JsxExpression inside a JsxElement's body can only be other JsxChild, but no trivia
|
|
return token.parent.kind !== ts.SyntaxKind.JsxExpression || !isJsxElementOrFragment(token.parent.parent);
|
|
case ts.SyntaxKind.GreaterThanToken:
|
|
switch (token.parent.kind) {
|
|
case ts.SyntaxKind.JsxOpeningElement:
|
|
// if end is not equal, this is part of the type arguments list. in all other cases it would be inside the element body
|
|
return token.end !== token.parent.end;
|
|
case ts.SyntaxKind.JsxOpeningFragment:
|
|
return false; // would be inside the fragment
|
|
case ts.SyntaxKind.JsxSelfClosingElement:
|
|
return token.end !== token.parent.end || // if end is not equal, this is part of the type arguments list
|
|
!isJsxElementOrFragment(token.parent.parent); // there's only trailing trivia if it's the end of the top element
|
|
case ts.SyntaxKind.JsxClosingElement:
|
|
case ts.SyntaxKind.JsxClosingFragment:
|
|
// there's only trailing trivia if it's the end of the top element
|
|
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;
|
|
/** Get the line break style used in sourceFile. This function only looks at the first line break. If there is none, \n is assumed. */
|
|
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) {
|
|
// cache scanner
|
|
cachedScanner = ts.createScanner(languageVersion, false, undefined, text);
|
|
}
|
|
else {
|
|
cachedScanner.setScriptTarget(languageVersion);
|
|
cachedScanner.setText(text);
|
|
}
|
|
cachedScanner.scan();
|
|
return cachedScanner;
|
|
}
|
|
/**
|
|
* Determines whether the given text parses as a standalone identifier.
|
|
* This is not a guarantee that it works in every context. The property name in PropertyAccessExpressions for example allows reserved words.
|
|
* Depending on the context it could be parsed as contextual keyword or TypeScript keyword.
|
|
*/
|
|
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;
|
|
}
|
|
/**
|
|
* Determines whether the given text can be used to access a property with a PropertyAccessExpression while preserving the property's name.
|
|
*/
|
|
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;
|
|
/**
|
|
* Determines whether the given text can be used as unquoted name of a property declaration while preserving the property's name.
|
|
*/
|
|
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; // ensure stringified number equals literal
|
|
}
|
|
exports.isValidPropertyName = isValidPropertyName;
|
|
/**
|
|
* Determines whether the given text can be parsed as a numeric literal.
|
|
*/
|
|
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;
|
|
/**
|
|
* Determines whether the given text can be used as JSX tag or attribute name while preserving the exact name.
|
|
*/
|
|
function isValidJsxIdentifier(text, languageVersion = ts.ScriptTarget.Latest) {
|
|
if (text.length === 0)
|
|
return false;
|
|
let seenNamespaceSeparator = 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 /* minus */) {
|
|
if (!seenNamespaceSeparator && ch === 58 /* colon */ && i + charSize(ch) !== text.length) {
|
|
seenNamespaceSeparator = true;
|
|
}
|
|
else {
|
|
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) {
|
|
var _a, _b;
|
|
const queue = [];
|
|
while (true) {
|
|
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:
|
|
node = node.expression;
|
|
continue;
|
|
case ts.SyntaxKind.BinaryExpression:
|
|
if (isAssignmentKind(node.operatorToken.kind))
|
|
return true;
|
|
queue.push(node.right);
|
|
node = node.left;
|
|
continue;
|
|
case ts.SyntaxKind.PrefixUnaryExpression:
|
|
switch (node.operator) {
|
|
case ts.SyntaxKind.PlusPlusToken:
|
|
case ts.SyntaxKind.MinusMinusToken:
|
|
return true;
|
|
default:
|
|
node = node.operand;
|
|
continue;
|
|
}
|
|
case ts.SyntaxKind.ElementAccessExpression:
|
|
if (node.argumentExpression !== undefined) // for compatibility with typescript@<2.9.0
|
|
queue.push(node.argumentExpression);
|
|
node = node.expression;
|
|
continue;
|
|
case ts.SyntaxKind.ConditionalExpression:
|
|
queue.push(node.whenTrue, node.whenFalse);
|
|
node = node.condition;
|
|
continue;
|
|
case ts.SyntaxKind.NewExpression:
|
|
if (options & 2 /* Constructor */)
|
|
return true;
|
|
if (node.arguments !== undefined)
|
|
queue.push(...node.arguments);
|
|
node = node.expression;
|
|
continue;
|
|
case ts.SyntaxKind.TaggedTemplateExpression:
|
|
if (options & 1 /* TaggedTemplate */)
|
|
return true;
|
|
queue.push(node.tag);
|
|
node = node.template;
|
|
if (node.kind === ts.SyntaxKind.NoSubstitutionTemplateLiteral)
|
|
break;
|
|
// falls through
|
|
case ts.SyntaxKind.TemplateExpression:
|
|
for (const child of node.templateSpans)
|
|
queue.push(child.expression);
|
|
break;
|
|
case ts.SyntaxKind.ClassExpression: {
|
|
if (node.decorators !== undefined)
|
|
return true;
|
|
for (const child of node.members) {
|
|
if (child.decorators !== undefined)
|
|
return true;
|
|
if (!hasModifier(child.modifiers, ts.SyntaxKind.DeclareKeyword)) {
|
|
if (((_a = child.name) === null || _a === void 0 ? void 0 : _a.kind) === ts.SyntaxKind.ComputedPropertyName)
|
|
queue.push(child.name.expression);
|
|
if (node_1.isMethodDeclaration(child)) {
|
|
for (const p of child.parameters)
|
|
if (p.decorators !== undefined)
|
|
return true;
|
|
}
|
|
else if (node_1.isPropertyDeclaration(child) &&
|
|
child.initializer !== undefined &&
|
|
hasModifier(child.modifiers, ts.SyntaxKind.StaticKeyword)) {
|
|
queue.push(child.initializer);
|
|
}
|
|
}
|
|
}
|
|
const base = getBaseOfClassLikeExpression(node);
|
|
if (base === undefined)
|
|
break;
|
|
node = base.expression;
|
|
continue;
|
|
}
|
|
case ts.SyntaxKind.ArrayLiteralExpression:
|
|
queue.push(...node.elements);
|
|
break;
|
|
case ts.SyntaxKind.ObjectLiteralExpression:
|
|
for (const child of node.properties) {
|
|
if (((_b = child.name) === null || _b === void 0 ? void 0 : _b.kind) === ts.SyntaxKind.ComputedPropertyName)
|
|
queue.push(child.name.expression);
|
|
switch (child.kind) {
|
|
case ts.SyntaxKind.PropertyAssignment:
|
|
queue.push(child.initializer);
|
|
break;
|
|
case ts.SyntaxKind.SpreadAssignment:
|
|
queue.push(child.expression);
|
|
}
|
|
}
|
|
break;
|
|
case ts.SyntaxKind.JsxExpression:
|
|
if (node.expression === undefined)
|
|
break;
|
|
node = node.expression;
|
|
continue;
|
|
case ts.SyntaxKind.JsxElement:
|
|
case ts.SyntaxKind.JsxFragment:
|
|
for (const child of node.children)
|
|
if (child.kind !== ts.SyntaxKind.JsxText)
|
|
queue.push(child);
|
|
if (node.kind === ts.SyntaxKind.JsxFragment)
|
|
break;
|
|
node = node.openingElement;
|
|
// falls through
|
|
case ts.SyntaxKind.JsxSelfClosingElement:
|
|
case ts.SyntaxKind.JsxOpeningElement:
|
|
if (options & 4 /* JsxElement */)
|
|
return true;
|
|
for (const child of node.attributes.properties) {
|
|
if (child.kind === ts.SyntaxKind.JsxSpreadAttribute) {
|
|
queue.push(child.expression);
|
|
}
|
|
else if (child.initializer !== undefined) {
|
|
queue.push(child.initializer);
|
|
}
|
|
}
|
|
break;
|
|
case ts.SyntaxKind.CommaListExpression:
|
|
queue.push(...node.elements);
|
|
}
|
|
if (queue.length === 0)
|
|
return false;
|
|
node = queue.pop();
|
|
}
|
|
}
|
|
exports.hasSideEffects = hasSideEffects;
|
|
/** Returns the VariableDeclaration or ParameterDeclaration that contains the BindingElement */
|
|
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;
|
|
continue;
|
|
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.QuestionQuestionToken:
|
|
case ts.SyntaxKind.InKeyword:
|
|
case ts.SyntaxKind.QuestionQuestionEqualsToken:
|
|
case ts.SyntaxKind.AmpersandAmpersandEqualsToken:
|
|
case ts.SyntaxKind.BarBarEqualsToken:
|
|
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;
|
|
// falls through
|
|
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 /* Delete */;
|
|
case ts.SyntaxKind.PostfixUnaryExpression:
|
|
return 3 /* ReadWrite */;
|
|
case ts.SyntaxKind.PrefixUnaryExpression:
|
|
return parent.operator === ts.SyntaxKind.PlusPlusToken ||
|
|
parent.operator === ts.SyntaxKind.MinusMinusToken
|
|
? 3 /* ReadWrite */
|
|
: 1 /* Read */;
|
|
case ts.SyntaxKind.BinaryExpression:
|
|
return parent.right === node
|
|
? 1 /* Read */
|
|
: !isAssignmentKind(parent.operatorToken.kind)
|
|
? 1 /* Read */
|
|
: parent.operatorToken.kind === ts.SyntaxKind.EqualsToken
|
|
? 2 /* Write */
|
|
: 3 /* ReadWrite */;
|
|
case ts.SyntaxKind.ShorthandPropertyAssignment:
|
|
return parent.objectAssignmentInitializer === node
|
|
? 1 /* Read */
|
|
: isInDestructuringAssignment(parent)
|
|
? 2 /* Write */
|
|
: 1 /* Read */;
|
|
case ts.SyntaxKind.PropertyAssignment:
|
|
return parent.name === node
|
|
? 0 /* None */
|
|
: isInDestructuringAssignment(parent)
|
|
? 2 /* Write */
|
|
: 1 /* Read */;
|
|
case ts.SyntaxKind.ArrayLiteralExpression:
|
|
case ts.SyntaxKind.SpreadElement:
|
|
case ts.SyntaxKind.SpreadAssignment:
|
|
return isInDestructuringAssignment(parent)
|
|
? 2 /* Write */
|
|
: 1 /* Read */;
|
|
case ts.SyntaxKind.ParenthesizedExpression:
|
|
case ts.SyntaxKind.NonNullExpression:
|
|
case ts.SyntaxKind.TypeAssertionExpression:
|
|
case ts.SyntaxKind.AsExpression:
|
|
// (<number>foo! as {})++
|
|
return getAccessKind(parent);
|
|
case ts.SyntaxKind.ForOfStatement:
|
|
case ts.SyntaxKind.ForInStatement:
|
|
return parent.initializer === node
|
|
? 2 /* Write */
|
|
: 1 /* Read */;
|
|
case ts.SyntaxKind.ExpressionWithTypeArguments:
|
|
return parent.parent.token === ts.SyntaxKind.ExtendsKeyword &&
|
|
parent.parent.parent.kind !== ts.SyntaxKind.InterfaceDeclaration
|
|
? 1 /* Read */
|
|
: 0 /* None */;
|
|
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 /* Read */;
|
|
case ts.SyntaxKind.ArrowFunction:
|
|
return parent.body === node
|
|
? 1 /* Read */
|
|
: 2 /* Write */;
|
|
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 /* Read */
|
|
: 0 /* None */;
|
|
case ts.SyntaxKind.PropertyAccessExpression:
|
|
return parent.expression === node
|
|
? 1 /* Read */
|
|
: 0 /* None */;
|
|
case ts.SyntaxKind.ExportAssignment:
|
|
return parent.isExportEquals
|
|
? 1 /* Read */
|
|
: 0 /* None */;
|
|
}
|
|
return 0 /* None */;
|
|
}
|
|
exports.getAccessKind = getAccessKind;
|
|
function isReassignmentTarget(node) {
|
|
return (getAccessKind(node) & 2 /* Write */) !== 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.LabeledStatement:
|
|
case ts.SyntaxKind.ExpressionStatement:
|
|
case ts.SyntaxKind.VariableStatement:
|
|
case ts.SyntaxKind.FunctionDeclaration:
|
|
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.ImportDeclaration:
|
|
case ts.SyntaxKind.NamespaceExportDeclaration:
|
|
case ts.SyntaxKind.ExportAssignment:
|
|
case ts.SyntaxKind.IndexSignature:
|
|
case ts.SyntaxKind.FunctionType:
|
|
case ts.SyntaxKind.ConstructorType:
|
|
case ts.SyntaxKind.JSDocFunctionType:
|
|
case ts.SyntaxKind.ExportDeclaration:
|
|
case ts.SyntaxKind.NamedTupleMember:
|
|
case ts.SyntaxKind.EndOfFileToken:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
exports.canHaveJsDoc = canHaveJsDoc;
|
|
/** Gets the JSDoc of a node. For performance reasons this function should only be called when `canHaveJsDoc` returns true. */
|
|
function getJsDoc(node, sourceFile) {
|
|
const result = [];
|
|
for (const child of node.getChildren(sourceFile)) {
|
|
if (!node_1.isJsDoc(child))
|
|
break;
|
|
result.push(child);
|
|
}
|
|
return result;
|
|
}
|
|
exports.getJsDoc = getJsDoc;
|
|
/**
|
|
* Parses the JsDoc of any node. This function is made for nodes that don't get their JsDoc parsed by the TypeScript parser.
|
|
*
|
|
* @param considerTrailingComments When set to `true` this function uses the trailing comments if the node starts on the same line
|
|
* as the previous node ends.
|
|
*/
|
|
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, node.getStart(sourceFile), sourceFile, considerTrailingComments);
|
|
}
|
|
exports.parseJsDocOfNode = parseJsDocOfNode;
|
|
function parseJsDocWorker(node, nodeStart, sourceFile, considerTrailingComments) {
|
|
const start = ts[considerTrailingComments && isSameLine(sourceFile, node.pos, nodeStart)
|
|
? 'forEachTrailingCommentRange'
|
|
: 'forEachLeadingCommentRange'](sourceFile.text, node.pos,
|
|
// return object to make `0` a truthy value
|
|
(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";
|
|
// @internal
|
|
ImportKind[ImportKind["AllNestedImports"] = 56] = "AllNestedImports";
|
|
// @internal
|
|
ImportKind[ImportKind["AllTopLevelImports"] = 7] = "AllTopLevelImports";
|
|
})(ImportKind = exports.ImportKind || (exports.ImportKind = {}));
|
|
function findImports(sourceFile, kinds, ignoreFileName = true) {
|
|
const result = [];
|
|
for (const node of findImportLikeNodes(sourceFile, kinds, ignoreFileName)) {
|
|
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, ignoreFileName = true) {
|
|
return new ImportFinder(sourceFile, kinds, ignoreFileName).find();
|
|
}
|
|
exports.findImportLikeNodes = findImportLikeNodes;
|
|
class ImportFinder {
|
|
constructor(_sourceFile, _options, _ignoreFileName) {
|
|
this._sourceFile = _sourceFile;
|
|
this._options = _options;
|
|
this._ignoreFileName = _ignoreFileName;
|
|
this._result = [];
|
|
}
|
|
find() {
|
|
if (this._sourceFile.isDeclarationFile)
|
|
this._options &= ~24 /* AllImportExpressions */;
|
|
if (this._options & 7 /* AllTopLevelImports */)
|
|
this._findImports(this._sourceFile.statements);
|
|
if (this._options & 56 /* AllNestedImports */)
|
|
this._findNestedImports();
|
|
return this._result;
|
|
}
|
|
_findImports(statements) {
|
|
for (const statement of statements) {
|
|
if (node_1.isImportDeclaration(statement)) {
|
|
if (this._options & 1 /* ImportDeclaration */)
|
|
this._result.push(statement);
|
|
}
|
|
else if (node_1.isImportEqualsDeclaration(statement)) {
|
|
if (this._options & 2 /* ImportEquals */ &&
|
|
statement.moduleReference.kind === ts.SyntaxKind.ExternalModuleReference)
|
|
this._result.push(statement);
|
|
}
|
|
else if (node_1.isExportDeclaration(statement)) {
|
|
if (statement.moduleSpecifier !== undefined && this._options & 4 /* ExportFrom */)
|
|
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() {
|
|
const isJavaScriptFile = this._ignoreFileName || (this._sourceFile.flags & ts.NodeFlags.JavaScriptFile) !== 0;
|
|
let re;
|
|
let includeJsDoc;
|
|
if ((this._options & 56 /* AllNestedImports */) === 16 /* Require */) {
|
|
if (!isJavaScriptFile)
|
|
return; // don't look for 'require' in TS files
|
|
re = /\brequire\s*[</(]/g;
|
|
includeJsDoc = false;
|
|
}
|
|
else if (this._options & 16 /* Require */ && isJavaScriptFile) {
|
|
re = /\b(?:import|require)\s*[</(]/g;
|
|
includeJsDoc = (this._options & 32 /* ImportType */) !== 0;
|
|
}
|
|
else {
|
|
re = /\bimport\s*[</(]/g;
|
|
includeJsDoc = isJavaScriptFile && (this._options & 32 /* ImportType */) !== 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,
|
|
// only look for ImportTypeNode within JSDoc in JS files
|
|
match[0][0] === 'i' && includeJsDoc);
|
|
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);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
/**
|
|
* Ambient context means the statement itself has the `declare` keyword
|
|
* or is inside a `declare namespace`, `delcare module` or `declare global`.
|
|
*/
|
|
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;
|
|
/** Includes `declare namespace`, `declare module` and `declare global` and namespace nested in one of the aforementioned. */
|
|
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;
|
|
// https://github.com/ajafff/tslint-consistent-codestyle/issues/85
|
|
/**
|
|
* Checks if a given compiler option is enabled.
|
|
* It handles dependencies of options, e.g. `declaration` is implicitly enabled by `composite` or `strictNullChecks` is enabled by `strict`.
|
|
* However, it does not check dependencies that are already checked and reported as errors, e.g. `checkJs` without `allowJs`.
|
|
* This function only handles boolean flags.
|
|
*/
|
|
function isCompilerOptionEnabled(options, option) {
|
|
switch (option) {
|
|
case 'stripInternal':
|
|
case 'declarationMap':
|
|
case 'emitDeclarationOnly':
|
|
return options[option] === 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 'noUncheckedIndexedAccess':
|
|
return options.noUncheckedIndexedAccess === true && isCompilerOptionEnabled(options, 'strictNullChecks');
|
|
case 'allowJs':
|
|
return options.allowJs === undefined ? isCompilerOptionEnabled(options, 'checkJs') : options.allowJs;
|
|
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;
|
|
/**
|
|
* Has nothing to do with `isAmbientModuleBlock`.
|
|
*
|
|
* @returns `true` if it's a global augmentation or has a string name.
|
|
*/
|
|
function isAmbientModule(node) {
|
|
return node.name.kind === ts.SyntaxKind.StringLiteral || (node.flags & ts.NodeFlags.GlobalAugmentation) !== 0;
|
|
}
|
|
exports.isAmbientModule = isAmbientModule;
|
|
/**
|
|
* @deprecated use `getTsCheckDirective` instead since `// @ts-nocheck` is no longer restricted to JS files.
|
|
* @returns the last `// @ts-check` or `// @ts-nocheck` directive in the given file.
|
|
*/
|
|
function getCheckJsDirective(source) {
|
|
return getTsCheckDirective(source);
|
|
}
|
|
exports.getCheckJsDirective = getCheckJsDirective;
|
|
/** @returns the last `// @ts-check` or `// @ts-nocheck` directive in the given file. */
|
|
function getTsCheckDirective(source) {
|
|
let directive;
|
|
// needs to work around a shebang issue until https://github.com/Microsoft/TypeScript/issues/28477 is resolved
|
|
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.getTsCheckDirective = getTsCheckDirective;
|
|
function isConstAssertion(node) {
|
|
return node_1.isTypeReferenceNode(node.type) &&
|
|
node.type.typeName.kind === ts.SyntaxKind.Identifier &&
|
|
node.type.typeName.escapedText === 'const';
|
|
}
|
|
exports.isConstAssertion = isConstAssertion;
|
|
/** Detects whether an expression is affected by an enclosing 'as const' assertion and therefore treated literally. */
|
|
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:
|
|
case ts.SyntaxKind.TemplateExpression:
|
|
current = parent;
|
|
break;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
exports.isInConstContext = isInConstContext;
|
|
/** Returns true for `Object.defineProperty(o, 'prop', {value, writable: false})` and `Object.defineProperty(o, 'prop', {get: () => 1})`*/
|
|
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;
|
|
/** Determines whether a call to `Object.defineProperty` is statically analyzable. */
|
|
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;
|
|
/** @deprecated typescript 4.3 removed the concept of literal well known symbols. Use `getPropertyNameFromType` instead. */
|
|
function getPropertyNameOfWellKnownSymbol(node) {
|
|
return {
|
|
displayName: `[Symbol.${node.name.text}]`,
|
|
symbolName: ('__@' + node.name.text),
|
|
};
|
|
}
|
|
exports.getPropertyNameOfWellKnownSymbol = getPropertyNameOfWellKnownSymbol;
|
|
const isTsBefore43 = (([major, minor]) => major < '4' || major === '4' && minor < '3')(ts.versionMajorMinor.split('.'));
|
|
function getLateBoundPropertyNames(node, checker) {
|
|
const result = {
|
|
known: true,
|
|
names: [],
|
|
};
|
|
node = unwrapParentheses(node);
|
|
if (isTsBefore43 && isWellKnownSymbolLiterally(node)) {
|
|
result.names.push(getPropertyNameOfWellKnownSymbol(node)); // wotan-disable-line no-unstable-api-use
|
|
}
|
|
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) }] }
|
|
: node.kind === ts.SyntaxKind.PrivateIdentifier
|
|
? { known: true, names: [{ displayName: node.text, symbolName: checker.getSymbolAtLocation(node).escapedName }] }
|
|
: getLateBoundPropertyNames(node.expression, checker);
|
|
}
|
|
exports.getLateBoundPropertyNamesOfPropertyName = getLateBoundPropertyNamesOfPropertyName;
|
|
/** Most declarations demand there to be only one statically known name, e.g. class members with computed name. */
|
|
function getSingleLateBoundPropertyNameOfPropertyName(node, checker) {
|
|
const staticName = getPropertyName(node);
|
|
if (staticName !== undefined)
|
|
return { displayName: staticName, symbolName: ts.escapeLeadingUnderscores(staticName) };
|
|
if (node.kind === ts.SyntaxKind.PrivateIdentifier)
|
|
return { displayName: node.text, symbolName: checker.getSymbolAtLocation(node).escapedName };
|
|
const { expression } = node;
|
|
return isTsBefore43 && isWellKnownSymbolLiterally(expression)
|
|
? getPropertyNameOfWellKnownSymbol(expression) // wotan-disable-line no-unstable-api-use
|
|
: 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;
|
|
function formatPseudoBigInt(v) {
|
|
return `${v.negative ? '-' : ''}${v.base10Value}n`;
|
|
}
|
|
exports.formatPseudoBigInt = formatPseudoBigInt;
|
|
/**
|
|
* Determines whether the given `SwitchStatement`'s `case` clauses cover every possible value of the switched expression.
|
|
* The logic is the same as TypeScript's control flow analysis.
|
|
* This does **not** check whether all `case` clauses do a certain action like assign a variable or return a value.
|
|
* This function ignores the `default` clause if present.
|
|
*/
|
|
function hasExhaustiveCaseClauses(node, checker) {
|
|
const caseClauses = node.caseBlock.clauses.filter(node_1.isCaseClause);
|
|
if (caseClauses.length === 0)
|
|
return false;
|
|
const typeParts = type_1.unionTypeParts(checker.getTypeAtLocation(node.expression));
|
|
if (typeParts.length > caseClauses.length)
|
|
return false;
|
|
const types = new Set(typeParts.map(getPrimitiveLiteralFromType));
|
|
if (types.has(undefined))
|
|
return false;
|
|
const seen = new Set();
|
|
for (const clause of caseClauses) {
|
|
const expressionType = checker.getTypeAtLocation(clause.expression);
|
|
if (exports.isTypeFlagSet(expressionType, ts.TypeFlags.Never))
|
|
continue; // additional case clause with 'never' is always allowed
|
|
const type = getPrimitiveLiteralFromType(expressionType);
|
|
if (types.has(type)) {
|
|
seen.add(type);
|
|
}
|
|
else if (type !== 'null' && type !== 'undefined') { // additional case clauses with 'null' and 'undefined' are always allowed
|
|
return false;
|
|
}
|
|
}
|
|
return types.size === seen.size;
|
|
}
|
|
exports.hasExhaustiveCaseClauses = hasExhaustiveCaseClauses;
|
|
function getPrimitiveLiteralFromType(t) {
|
|
if (exports.isTypeFlagSet(t, ts.TypeFlags.Null))
|
|
return 'null';
|
|
if (exports.isTypeFlagSet(t, ts.TypeFlags.Undefined))
|
|
return 'undefined';
|
|
if (exports.isTypeFlagSet(t, ts.TypeFlags.NumberLiteral))
|
|
return `${exports.isTypeFlagSet(t, ts.TypeFlags.EnumLiteral) ? 'enum:' : ''}${t.value}`;
|
|
if (exports.isTypeFlagSet(t, ts.TypeFlags.StringLiteral))
|
|
return `${exports.isTypeFlagSet(t, ts.TypeFlags.EnumLiteral) ? 'enum:' : ''}string:${t.value}`;
|
|
if (exports.isTypeFlagSet(t, ts.TypeFlags.BigIntLiteral))
|
|
return formatPseudoBigInt(t.value);
|
|
if (_3_2_1.isUniqueESSymbolType(t))
|
|
return t.escapedName;
|
|
if (type_1.isBooleanLiteralType(t, true))
|
|
return 'true';
|
|
if (type_1.isBooleanLiteralType(t, false))
|
|
return 'false';
|
|
}
|
|
function getBaseOfClassLikeExpression(node) {
|
|
var _a;
|
|
if (((_a = node.heritageClauses) === null || _a === void 0 ? void 0 : _a[0].token) === ts.SyntaxKind.ExtendsKeyword)
|
|
return node.heritageClauses[0].types[0];
|
|
}
|
|
exports.getBaseOfClassLikeExpression = getBaseOfClassLikeExpression;
|
|
//# sourceMappingURL=util.js.map
|