'use strict'; Object.defineProperty(exports, '__esModule', { value: true }); class BaseParser { constructor() { this.sawUnambiguousESM = false; this.ambiguousScriptDifferentAst = false; } hasPlugin(pluginConfig) { if (typeof pluginConfig === "string") { return this.plugins.has(pluginConfig); } else { const [pluginName, pluginOptions] = pluginConfig; if (!this.hasPlugin(pluginName)) { return false; } const actualOptions = this.plugins.get(pluginName); for (const key of Object.keys(pluginOptions)) { if ((actualOptions == null ? void 0 : actualOptions[key]) !== pluginOptions[key]) { return false; } } return true; } } getPluginOption(plugin, name) { var _this$plugins$get; return (_this$plugins$get = this.plugins.get(plugin)) == null ? void 0 : _this$plugins$get[name]; } } function setTrailingComments(node, comments) { if (node.trailingComments === undefined) { node.trailingComments = comments; } else { node.trailingComments.unshift(...comments); } } function setLeadingComments(node, comments) { if (node.leadingComments === undefined) { node.leadingComments = comments; } else { node.leadingComments.unshift(...comments); } } function setInnerComments(node, comments) { if (node.innerComments === undefined) { node.innerComments = comments; } else { node.innerComments.unshift(...comments); } } function adjustInnerComments(node, elements, commentWS) { let lastElement = null; let i = elements.length; while (lastElement === null && i > 0) { lastElement = elements[--i]; } if (lastElement === null || lastElement.start > commentWS.start) { setInnerComments(node, commentWS.comments); } else { setTrailingComments(lastElement, commentWS.comments); } } class CommentsParser extends BaseParser { addComment(comment) { if (this.filename) comment.loc.filename = this.filename; this.state.comments.push(comment); } processComment(node) { const { commentStack } = this.state; const commentStackLength = commentStack.length; if (commentStackLength === 0) return; let i = commentStackLength - 1; const lastCommentWS = commentStack[i]; if (lastCommentWS.start === node.end) { lastCommentWS.leadingNode = node; i--; } const { start: nodeStart } = node; for (; i >= 0; i--) { const commentWS = commentStack[i]; const commentEnd = commentWS.end; if (commentEnd > nodeStart) { commentWS.containingNode = node; this.finalizeComment(commentWS); commentStack.splice(i, 1); } else { if (commentEnd === nodeStart) { commentWS.trailingNode = node; } break; } } } finalizeComment(commentWS) { const { comments } = commentWS; if (commentWS.leadingNode !== null || commentWS.trailingNode !== null) { if (commentWS.leadingNode !== null) { setTrailingComments(commentWS.leadingNode, comments); } if (commentWS.trailingNode !== null) { setLeadingComments(commentWS.trailingNode, comments); } } else { const { containingNode: node, start: commentStart } = commentWS; if (this.input.charCodeAt(commentStart - 1) === 44) { switch (node.type) { case "ObjectExpression": case "ObjectPattern": case "RecordExpression": adjustInnerComments(node, node.properties, commentWS); break; case "CallExpression": case "OptionalCallExpression": adjustInnerComments(node, node.arguments, commentWS); break; case "FunctionDeclaration": case "FunctionExpression": case "ArrowFunctionExpression": case "ObjectMethod": case "ClassMethod": case "ClassPrivateMethod": adjustInnerComments(node, node.params, commentWS); break; case "ArrayExpression": case "ArrayPattern": case "TupleExpression": adjustInnerComments(node, node.elements, commentWS); break; case "ExportNamedDeclaration": case "ImportDeclaration": adjustInnerComments(node, node.specifiers, commentWS); break; default: { setInnerComments(node, comments); } } } else { setInnerComments(node, comments); } } } finalizeRemainingComments() { const { commentStack } = this.state; for (let i = commentStack.length - 1; i >= 0; i--) { this.finalizeComment(commentStack[i]); } this.state.commentStack = []; } resetPreviousNodeTrailingComments(node) { const { commentStack } = this.state; const { length } = commentStack; if (length === 0) return; const commentWS = commentStack[length - 1]; if (commentWS.leadingNode === node) { commentWS.leadingNode = null; } } takeSurroundingComments(node, start, end) { const { commentStack } = this.state; const commentStackLength = commentStack.length; if (commentStackLength === 0) return; let i = commentStackLength - 1; for (; i >= 0; i--) { const commentWS = commentStack[i]; const commentEnd = commentWS.end; const commentStart = commentWS.start; if (commentStart === end) { commentWS.leadingNode = node; } else if (commentEnd === start) { commentWS.trailingNode = node; } else if (commentEnd < start) { break; } } } } const ErrorCodes = Object.freeze({ SyntaxError: "BABEL_PARSER_SYNTAX_ERROR", SourceTypeModuleError: "BABEL_PARSER_SOURCETYPE_MODULE_REQUIRED" }); const ErrorMessages = makeErrorTemplates({ AccessorIsGenerator: "A %0ter cannot be a generator.", ArgumentsInClass: "'arguments' is only allowed in functions and class methods.", AsyncFunctionInSingleStatementContext: "Async functions can only be declared at the top level or inside a block.", AwaitBindingIdentifier: "Can not use 'await' as identifier inside an async function.", AwaitBindingIdentifierInStaticBlock: "Can not use 'await' as identifier inside a static block.", AwaitExpressionFormalParameter: "'await' is not allowed in async function parameters.", AwaitNotInAsyncContext: "'await' is only allowed within async functions and at the top levels of modules.", AwaitNotInAsyncFunction: "'await' is only allowed within async functions.", BadGetterArity: "A 'get' accesor must not have any formal parameters.", BadSetterArity: "A 'set' accesor must have exactly one formal parameter.", BadSetterRestParameter: "A 'set' accesor function argument must not be a rest parameter.", ConstructorClassField: "Classes may not have a field named 'constructor'.", ConstructorClassPrivateField: "Classes may not have a private field named '#constructor'.", ConstructorIsAccessor: "Class constructor may not be an accessor.", ConstructorIsAsync: "Constructor can't be an async function.", ConstructorIsGenerator: "Constructor can't be a generator.", DeclarationMissingInitializer: "'%0' require an initialization value.", DecoratorBeforeExport: "Decorators must be placed *before* the 'export' keyword. You can set the 'decoratorsBeforeExport' option to false to use the 'export @decorator class {}' syntax.", DecoratorConstructor: "Decorators can't be used with a constructor. Did you mean '@dec class { ... }'?", DecoratorExportClass: "Using the export keyword between a decorator and a class is not allowed. Please use `export @dec class` instead.", DecoratorSemicolon: "Decorators must not be followed by a semicolon.", DecoratorStaticBlock: "Decorators can't be used with a static block.", DeletePrivateField: "Deleting a private field is not allowed.", DestructureNamedImport: "ES2015 named imports do not destructure. Use another statement for destructuring after the import.", DuplicateConstructor: "Duplicate constructor in the same class.", DuplicateDefaultExport: "Only one default export allowed per module.", DuplicateExport: "`%0` has already been exported. Exported identifiers must be unique.", DuplicateProto: "Redefinition of __proto__ property.", DuplicateRegExpFlags: "Duplicate regular expression flag.", ElementAfterRest: "Rest element must be last element.", EscapedCharNotAnIdentifier: "Invalid Unicode escape.", ExportBindingIsString: "A string literal cannot be used as an exported binding without `from`.\n- Did you mean `export { '%0' as '%1' } from 'some-module'`?", ExportDefaultFromAsIdentifier: "'from' is not allowed as an identifier after 'export default'.", ForInOfLoopInitializer: "'%0' loop variable declaration may not have an initializer.", ForOfAsync: "The left-hand side of a for-of loop may not be 'async'.", ForOfLet: "The left-hand side of a for-of loop may not start with 'let'.", GeneratorInSingleStatementContext: "Generators can only be declared at the top level or inside a block.", IllegalBreakContinue: "Unsyntactic %0.", IllegalLanguageModeDirective: "Illegal 'use strict' directive in function with non-simple parameter list.", IllegalReturn: "'return' outside of function.", ImportBindingIsString: 'A string literal cannot be used as an imported binding.\n- Did you mean `import { "%0" as foo }`?', ImportCallArgumentTrailingComma: "Trailing comma is disallowed inside import(...) arguments.", ImportCallArity: "`import()` requires exactly %0.", ImportCallNotNewExpression: "Cannot use new with import(...).", ImportCallSpreadArgument: "`...` is not allowed in `import()`.", IncompatibleRegExpUVFlags: "The 'u' and 'v' regular expression flags cannot be enabled at the same time.", InvalidBigIntLiteral: "Invalid BigIntLiteral.", InvalidCodePoint: "Code point out of bounds.", InvalidCoverInitializedName: "Invalid shorthand property initializer.", InvalidDecimal: "Invalid decimal.", InvalidDigit: "Expected number in radix %0.", InvalidEscapeSequence: "Bad character escape sequence.", InvalidEscapeSequenceTemplate: "Invalid escape sequence in template.", InvalidEscapedReservedWord: "Escape sequence in keyword %0.", InvalidIdentifier: "Invalid identifier %0.", InvalidLhs: "Invalid left-hand side in %0.", InvalidLhsBinding: "Binding invalid left-hand side in %0.", InvalidNumber: "Invalid number.", InvalidOrMissingExponent: "Floating-point numbers require a valid exponent after the 'e'.", InvalidOrUnexpectedToken: "Unexpected character '%0'.", InvalidParenthesizedAssignment: "Invalid parenthesized assignment pattern.", InvalidPrivateFieldResolution: "Private name #%0 is not defined.", InvalidPropertyBindingPattern: "Binding member expression.", InvalidRecordProperty: "Only properties and spread elements are allowed in record definitions.", InvalidRestAssignmentPattern: "Invalid rest operator's argument.", LabelRedeclaration: "Label '%0' is already declared.", LetInLexicalBinding: "'let' is not allowed to be used as a name in 'let' or 'const' declarations.", LineTerminatorBeforeArrow: "No line break is allowed before '=>'.", MalformedRegExpFlags: "Invalid regular expression flag.", MissingClassName: "A class name is required.", MissingEqInAssignment: "Only '=' operator can be used for specifying default value.", MissingSemicolon: "Missing semicolon.", MissingUnicodeEscape: "Expecting Unicode escape sequence \\uXXXX.", MixingCoalesceWithLogical: "Nullish coalescing operator(??) requires parens when mixing with logical operators.", ModuleAttributeDifferentFromType: "The only accepted module attribute is `type`.", ModuleAttributeInvalidValue: "Only string literals are allowed as module attribute values.", ModuleAttributesWithDuplicateKeys: 'Duplicate key "%0" is not allowed in module attributes.', ModuleExportNameHasLoneSurrogate: "An export name cannot include a lone surrogate, found '\\u%0'.", ModuleExportUndefined: "Export '%0' is not defined.", MultipleDefaultsInSwitch: "Multiple default clauses.", NewlineAfterThrow: "Illegal newline after throw.", NoCatchOrFinally: "Missing catch or finally clause.", NumberIdentifier: "Identifier directly after number.", NumericSeparatorInEscapeSequence: "Numeric separators are not allowed inside unicode escape sequences or hex escape sequences.", ObsoleteAwaitStar: "'await*' has been removed from the async functions proposal. Use Promise.all() instead.", OptionalChainingNoNew: "Constructors in/after an Optional Chain are not allowed.", OptionalChainingNoTemplate: "Tagged Template Literals are not allowed in optionalChain.", OverrideOnConstructor: "'override' modifier cannot appear on a constructor declaration.", ParamDupe: "Argument name clash.", PatternHasAccessor: "Object pattern can't contain getter or setter.", PatternHasMethod: "Object pattern can't contain methods.", PipeBodyIsTighter: "Unexpected %0 after pipeline body; any %0 expression acting as Hack-style pipe body must be parenthesized due to its loose operator precedence.", PipeTopicRequiresHackPipes: 'Topic reference is used, but the pipelineOperator plugin was not passed a "proposal": "hack" or "smart" option.', PipeTopicUnbound: "Topic reference is unbound; it must be inside a pipe body.", PipeTopicUnconfiguredToken: 'Invalid topic token %0. In order to use %0 as a topic reference, the pipelineOperator plugin must be configured with { "proposal": "hack", "topicToken": "%0" }.', PipeTopicUnused: "Hack-style pipe body does not contain a topic reference; Hack-style pipes must use topic at least once.", PipeUnparenthesizedBody: "Hack-style pipe body cannot be an unparenthesized %0 expression; please wrap it in parentheses.", PipelineBodyNoArrow: 'Unexpected arrow "=>" after pipeline body; arrow function in pipeline body must be parenthesized.', PipelineBodySequenceExpression: "Pipeline body may not be a comma-separated sequence expression.", PipelineHeadSequenceExpression: "Pipeline head should not be a comma-separated sequence expression.", PipelineTopicUnused: "Pipeline is in topic style but does not use topic reference.", PrimaryTopicNotAllowed: "Topic reference was used in a lexical context without topic binding.", PrimaryTopicRequiresSmartPipeline: 'Topic reference is used, but the pipelineOperator plugin was not passed a "proposal": "hack" or "smart" option.', PrivateInExpectedIn: "Private names are only allowed in property accesses (`obj.#%0`) or in `in` expressions (`#%0 in obj`).", PrivateNameRedeclaration: "Duplicate private name #%0.", RecordExpressionBarIncorrectEndSyntaxType: "Record expressions ending with '|}' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'bar'.", RecordExpressionBarIncorrectStartSyntaxType: "Record expressions starting with '{|' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'bar'.", RecordExpressionHashIncorrectStartSyntaxType: "Record expressions starting with '#{' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'hash'.", RecordNoProto: "'__proto__' is not allowed in Record expressions.", RestTrailingComma: "Unexpected trailing comma after rest element.", SloppyFunction: "In non-strict mode code, functions can only be declared at top level, inside a block, or as the body of an if statement.", StaticPrototype: "Classes may not have static property named prototype.", StrictDelete: "Deleting local variable in strict mode.", StrictEvalArguments: "Assigning to '%0' in strict mode.", StrictEvalArgumentsBinding: "Binding '%0' in strict mode.", StrictFunction: "In strict mode code, functions can only be declared at top level or inside a block.", StrictNumericEscape: "The only valid numeric escape in strict mode is '\\0'.", StrictOctalLiteral: "Legacy octal literals are not allowed in strict mode.", StrictWith: "'with' in strict mode.", SuperNotAllowed: "`super()` is only valid inside a class constructor of a subclass. Maybe a typo in the method name ('constructor') or not extending another class?", SuperPrivateField: "Private fields can't be accessed on super.", TrailingDecorator: "Decorators must be attached to a class element.", TupleExpressionBarIncorrectEndSyntaxType: "Tuple expressions ending with '|]' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'bar'.", TupleExpressionBarIncorrectStartSyntaxType: "Tuple expressions starting with '[|' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'bar'.", TupleExpressionHashIncorrectStartSyntaxType: "Tuple expressions starting with '#[' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'hash'.", UnexpectedArgumentPlaceholder: "Unexpected argument placeholder.", UnexpectedAwaitAfterPipelineBody: 'Unexpected "await" after pipeline body; await must have parentheses in minimal proposal.', UnexpectedDigitAfterHash: "Unexpected digit after hash token.", UnexpectedImportExport: "'import' and 'export' may only appear at the top level.", UnexpectedKeyword: "Unexpected keyword '%0'.", UnexpectedLeadingDecorator: "Leading decorators must be attached to a class declaration.", UnexpectedLexicalDeclaration: "Lexical declaration cannot appear in a single-statement context.", UnexpectedNewTarget: "`new.target` can only be used in functions or class properties.", UnexpectedNumericSeparator: "A numeric separator is only allowed between two digits.", UnexpectedPrivateField: "Unexpected private name.", UnexpectedReservedWord: "Unexpected reserved word '%0'.", UnexpectedSuper: "'super' is only allowed in object methods and classes.", UnexpectedToken: "Unexpected token '%0'.", UnexpectedTokenUnaryExponentiation: "Illegal expression. Wrap left hand side or entire exponentiation in parentheses.", UnsupportedBind: "Binding should be performed on object property.", UnsupportedDecoratorExport: "A decorated export must export a class declaration.", UnsupportedDefaultExport: "Only expressions, functions or classes are allowed as the `default` export.", UnsupportedImport: "`import` can only be used in `import()` or `import.meta`.", UnsupportedMetaProperty: "The only valid meta property for %0 is %0.%1.", UnsupportedParameterDecorator: "Decorators cannot be used to decorate parameters.", UnsupportedPropertyDecorator: "Decorators cannot be used to decorate object literal properties.", UnsupportedSuper: "'super' can only be used with function calls (i.e. super()) or in property accesses (i.e. super.prop or super[prop]).", UnterminatedComment: "Unterminated comment.", UnterminatedRegExp: "Unterminated regular expression.", UnterminatedString: "Unterminated string constant.", UnterminatedTemplate: "Unterminated template.", VarRedeclaration: "Identifier '%0' has already been declared.", YieldBindingIdentifier: "Can not use 'yield' as identifier inside a generator.", YieldInParameter: "Yield expression is not allowed in formal parameters.", ZeroDigitNumericSeparator: "Numeric separator can not be used after leading 0." }, ErrorCodes.SyntaxError); const SourceTypeModuleErrorMessages = makeErrorTemplates({ ImportMetaOutsideModule: `import.meta may appear only with 'sourceType: "module"'`, ImportOutsideModule: `'import' and 'export' may appear only with 'sourceType: "module"'` }, ErrorCodes.SourceTypeModuleError); function keepReasonCodeCompat(reasonCode, syntaxPlugin) { { if (syntaxPlugin === "flow" && reasonCode === "PatternIsOptional") { return "OptionalBindingPattern"; } } return reasonCode; } function makeErrorTemplates(messages, code, syntaxPlugin) { const templates = {}; Object.keys(messages).forEach(reasonCode => { templates[reasonCode] = Object.freeze({ code, reasonCode: keepReasonCodeCompat(reasonCode, syntaxPlugin), template: messages[reasonCode] }); }); return Object.freeze(templates); } class ParserError extends CommentsParser { raise({ code, reasonCode, template }, origin, ...params) { return this.raiseWithData(origin.node ? origin.node.loc.start : origin.at, { code, reasonCode }, template, ...params); } raiseOverwrite(loc, { code, template }, ...params) { const pos = loc.index; const message = template.replace(/%(\d+)/g, (_, i) => params[i]) + ` (${loc.line}:${loc.column})`; if (this.options.errorRecovery) { const errors = this.state.errors; for (let i = errors.length - 1; i >= 0; i--) { const error = errors[i]; if (error.pos === pos) { return Object.assign(error, { message }); } else if (error.pos < pos) { break; } } } return this._raise({ code, loc, pos }, message); } raiseWithData(loc, data, errorTemplate, ...params) { const pos = loc.index; const message = errorTemplate.replace(/%(\d+)/g, (_, i) => params[i]) + ` (${loc.line}:${loc.column})`; return this._raise(Object.assign({ loc, pos }, data), message); } _raise(errorContext, message) { const err = new SyntaxError(message); Object.assign(err, errorContext); if (this.options.errorRecovery) { if (!this.isLookahead) this.state.errors.push(err); return err; } else { throw err; } } } const { defineProperty } = Object; const toUnenumerable = (object, key) => defineProperty(object, key, { enumerable: false, value: object[key] }); function toESTreeLocation(node) { toUnenumerable(node.loc.start, "index"); toUnenumerable(node.loc.end, "index"); return node; } var estree = (superClass => class extends superClass { parse() { const file = toESTreeLocation(super.parse()); if (this.options.tokens) { file.tokens = file.tokens.map(toESTreeLocation); } return file; } parseRegExpLiteral({ pattern, flags }) { let regex = null; try { regex = new RegExp(pattern, flags); } catch (e) {} const node = this.estreeParseLiteral(regex); node.regex = { pattern, flags }; return node; } parseBigIntLiteral(value) { let bigInt; try { bigInt = BigInt(value); } catch (_unused) { bigInt = null; } const node = this.estreeParseLiteral(bigInt); node.bigint = String(node.value || value); return node; } parseDecimalLiteral(value) { const decimal = null; const node = this.estreeParseLiteral(decimal); node.decimal = String(node.value || value); return node; } estreeParseLiteral(value) { return this.parseLiteral(value, "Literal"); } parseStringLiteral(value) { return this.estreeParseLiteral(value); } parseNumericLiteral(value) { return this.estreeParseLiteral(value); } parseNullLiteral() { return this.estreeParseLiteral(null); } parseBooleanLiteral(value) { return this.estreeParseLiteral(value); } directiveToStmt(directive) { const directiveLiteral = directive.value; const stmt = this.startNodeAt(directive.start, directive.loc.start); const expression = this.startNodeAt(directiveLiteral.start, directiveLiteral.loc.start); expression.value = directiveLiteral.extra.expressionValue; expression.raw = directiveLiteral.extra.raw; stmt.expression = this.finishNodeAt(expression, "Literal", directiveLiteral.loc.end); stmt.directive = directiveLiteral.extra.raw.slice(1, -1); return this.finishNodeAt(stmt, "ExpressionStatement", directive.loc.end); } initFunction(node, isAsync) { super.initFunction(node, isAsync); node.expression = false; } checkDeclaration(node) { if (node != null && this.isObjectProperty(node)) { this.checkDeclaration(node.value); } else { super.checkDeclaration(node); } } getObjectOrClassMethodParams(method) { return method.value.params; } isValidDirective(stmt) { var _stmt$expression$extr; return stmt.type === "ExpressionStatement" && stmt.expression.type === "Literal" && typeof stmt.expression.value === "string" && !((_stmt$expression$extr = stmt.expression.extra) != null && _stmt$expression$extr.parenthesized); } parseBlockBody(node, ...args) { super.parseBlockBody(node, ...args); const directiveStatements = node.directives.map(d => this.directiveToStmt(d)); node.body = directiveStatements.concat(node.body); delete node.directives; } pushClassMethod(classBody, method, isGenerator, isAsync, isConstructor, allowsDirectSuper) { this.parseMethod(method, isGenerator, isAsync, isConstructor, allowsDirectSuper, "ClassMethod", true); if (method.typeParameters) { method.value.typeParameters = method.typeParameters; delete method.typeParameters; } classBody.body.push(method); } parsePrivateName() { const node = super.parsePrivateName(); { if (!this.getPluginOption("estree", "classFeatures")) { return node; } } return this.convertPrivateNameToPrivateIdentifier(node); } convertPrivateNameToPrivateIdentifier(node) { const name = super.getPrivateNameSV(node); node = node; delete node.id; node.name = name; node.type = "PrivateIdentifier"; return node; } isPrivateName(node) { { if (!this.getPluginOption("estree", "classFeatures")) { return super.isPrivateName(node); } } return node.type === "PrivateIdentifier"; } getPrivateNameSV(node) { { if (!this.getPluginOption("estree", "classFeatures")) { return super.getPrivateNameSV(node); } } return node.name; } parseLiteral(value, type) { const node = super.parseLiteral(value, type); node.raw = node.extra.raw; delete node.extra; return node; } parseFunctionBody(node, allowExpression, isMethod = false) { super.parseFunctionBody(node, allowExpression, isMethod); node.expression = node.body.type !== "BlockStatement"; } parseMethod(node, isGenerator, isAsync, isConstructor, allowDirectSuper, type, inClassScope = false) { let funcNode = this.startNode(); funcNode.kind = node.kind; funcNode = super.parseMethod(funcNode, isGenerator, isAsync, isConstructor, allowDirectSuper, type, inClassScope); funcNode.type = "FunctionExpression"; delete funcNode.kind; node.value = funcNode; if (type === "ClassPrivateMethod") { node.computed = false; } type = "MethodDefinition"; return this.finishNode(node, type); } parseClassProperty(...args) { const propertyNode = super.parseClassProperty(...args); { if (!this.getPluginOption("estree", "classFeatures")) { return propertyNode; } } propertyNode.type = "PropertyDefinition"; return propertyNode; } parseClassPrivateProperty(...args) { const propertyNode = super.parseClassPrivateProperty(...args); { if (!this.getPluginOption("estree", "classFeatures")) { return propertyNode; } } propertyNode.type = "PropertyDefinition"; propertyNode.computed = false; return propertyNode; } parseObjectMethod(prop, isGenerator, isAsync, isPattern, isAccessor) { const node = super.parseObjectMethod(prop, isGenerator, isAsync, isPattern, isAccessor); if (node) { node.type = "Property"; if (node.kind === "method") node.kind = "init"; node.shorthand = false; } return node; } parseObjectProperty(prop, startPos, startLoc, isPattern, refExpressionErrors) { const node = super.parseObjectProperty(prop, startPos, startLoc, isPattern, refExpressionErrors); if (node) { node.kind = "init"; node.type = "Property"; } return node; } isAssignable(node, isBinding) { if (node != null && this.isObjectProperty(node)) { return this.isAssignable(node.value, isBinding); } return super.isAssignable(node, isBinding); } toAssignable(node, isLHS = false) { if (node != null && this.isObjectProperty(node)) { const { key, value } = node; if (this.isPrivateName(key)) { this.classScope.usePrivateName(this.getPrivateNameSV(key), key.loc.start); } this.toAssignable(value, isLHS); return node; } return super.toAssignable(node, isLHS); } toAssignableObjectExpressionProp(prop, ...args) { if (prop.kind === "get" || prop.kind === "set") { this.raise(ErrorMessages.PatternHasAccessor, { node: prop.key }); } else if (prop.method) { this.raise(ErrorMessages.PatternHasMethod, { node: prop.key }); } else { super.toAssignableObjectExpressionProp(prop, ...args); } } finishCallExpression(node, optional) { super.finishCallExpression(node, optional); if (node.callee.type === "Import") { node.type = "ImportExpression"; node.source = node.arguments[0]; if (this.hasPlugin("importAssertions")) { var _node$arguments$; node.attributes = (_node$arguments$ = node.arguments[1]) != null ? _node$arguments$ : null; } delete node.arguments; delete node.callee; } return node; } toReferencedArguments(node) { if (node.type === "ImportExpression") { return; } super.toReferencedArguments(node); } parseExport(node) { super.parseExport(node); switch (node.type) { case "ExportAllDeclaration": node.exported = null; break; case "ExportNamedDeclaration": if (node.specifiers.length === 1 && node.specifiers[0].type === "ExportNamespaceSpecifier") { node.type = "ExportAllDeclaration"; node.exported = node.specifiers[0].exported; delete node.specifiers; } break; } return node; } parseSubscript(base, startPos, startLoc, noCalls, state) { const node = super.parseSubscript(base, startPos, startLoc, noCalls, state); if (state.optionalChainMember) { if (node.type === "OptionalMemberExpression" || node.type === "OptionalCallExpression") { node.type = node.type.substring(8); } if (state.stop) { const chain = this.startNodeAtNode(node); chain.expression = node; return this.finishNode(chain, "ChainExpression"); } } else if (node.type === "MemberExpression" || node.type === "CallExpression") { node.optional = false; } return node; } hasPropertyAsPrivateName(node) { if (node.type === "ChainExpression") { node = node.expression; } return super.hasPropertyAsPrivateName(node); } isOptionalChain(node) { return node.type === "ChainExpression"; } isObjectProperty(node) { return node.type === "Property" && node.kind === "init" && !node.method; } isObjectMethod(node) { return node.method || node.kind === "get" || node.kind === "set"; } finishNodeAt(node, type, endLoc) { return toESTreeLocation(super.finishNodeAt(node, type, endLoc)); } resetEndLocation(node, endLoc = this.state.lastTokEndLoc) { super.resetEndLocation(node, endLoc); toESTreeLocation(node); } }); class TokContext { constructor(token, preserveSpace) { this.token = void 0; this.preserveSpace = void 0; this.token = token; this.preserveSpace = !!preserveSpace; } } const types = { brace: new TokContext("{"), j_oTag: new TokContext("...", true) }; { types.template = new TokContext("`", true); } const beforeExpr = true; const startsExpr = true; const isLoop = true; const isAssign = true; const prefix = true; const postfix = true; class ExportedTokenType { constructor(label, conf = {}) { this.label = void 0; this.keyword = void 0; this.beforeExpr = void 0; this.startsExpr = void 0; this.rightAssociative = void 0; this.isLoop = void 0; this.isAssign = void 0; this.prefix = void 0; this.postfix = void 0; this.binop = void 0; this.label = label; this.keyword = conf.keyword; this.beforeExpr = !!conf.beforeExpr; this.startsExpr = !!conf.startsExpr; this.rightAssociative = !!conf.rightAssociative; this.isLoop = !!conf.isLoop; this.isAssign = !!conf.isAssign; this.prefix = !!conf.prefix; this.postfix = !!conf.postfix; this.binop = conf.binop != null ? conf.binop : null; { this.updateContext = null; } } } const keywords$1 = new Map(); function createKeyword(name, options = {}) { options.keyword = name; const token = createToken(name, options); keywords$1.set(name, token); return token; } function createBinop(name, binop) { return createToken(name, { beforeExpr, binop }); } let tokenTypeCounter = -1; const tokenTypes = []; const tokenLabels = []; const tokenBinops = []; const tokenBeforeExprs = []; const tokenStartsExprs = []; const tokenPrefixes = []; function createToken(name, options = {}) { var _options$binop, _options$beforeExpr, _options$startsExpr, _options$prefix; ++tokenTypeCounter; tokenLabels.push(name); tokenBinops.push((_options$binop = options.binop) != null ? _options$binop : -1); tokenBeforeExprs.push((_options$beforeExpr = options.beforeExpr) != null ? _options$beforeExpr : false); tokenStartsExprs.push((_options$startsExpr = options.startsExpr) != null ? _options$startsExpr : false); tokenPrefixes.push((_options$prefix = options.prefix) != null ? _options$prefix : false); tokenTypes.push(new ExportedTokenType(name, options)); return tokenTypeCounter; } function createKeywordLike(name, options = {}) { var _options$binop2, _options$beforeExpr2, _options$startsExpr2, _options$prefix2; ++tokenTypeCounter; keywords$1.set(name, tokenTypeCounter); tokenLabels.push(name); tokenBinops.push((_options$binop2 = options.binop) != null ? _options$binop2 : -1); tokenBeforeExprs.push((_options$beforeExpr2 = options.beforeExpr) != null ? _options$beforeExpr2 : false); tokenStartsExprs.push((_options$startsExpr2 = options.startsExpr) != null ? _options$startsExpr2 : false); tokenPrefixes.push((_options$prefix2 = options.prefix) != null ? _options$prefix2 : false); tokenTypes.push(new ExportedTokenType("name", options)); return tokenTypeCounter; } const tt = { bracketL: createToken("[", { beforeExpr, startsExpr }), bracketHashL: createToken("#[", { beforeExpr, startsExpr }), bracketBarL: createToken("[|", { beforeExpr, startsExpr }), bracketR: createToken("]"), bracketBarR: createToken("|]"), braceL: createToken("{", { beforeExpr, startsExpr }), braceBarL: createToken("{|", { beforeExpr, startsExpr }), braceHashL: createToken("#{", { beforeExpr, startsExpr }), braceR: createToken("}", { beforeExpr }), braceBarR: createToken("|}"), parenL: createToken("(", { beforeExpr, startsExpr }), parenR: createToken(")"), comma: createToken(",", { beforeExpr }), semi: createToken(";", { beforeExpr }), colon: createToken(":", { beforeExpr }), doubleColon: createToken("::", { beforeExpr }), dot: createToken("."), question: createToken("?", { beforeExpr }), questionDot: createToken("?."), arrow: createToken("=>", { beforeExpr }), template: createToken("template"), ellipsis: createToken("...", { beforeExpr }), backQuote: createToken("`", { startsExpr }), dollarBraceL: createToken("${", { beforeExpr, startsExpr }), templateTail: createToken("...`", { startsExpr }), templateNonTail: createToken("...${", { beforeExpr, startsExpr }), at: createToken("@"), hash: createToken("#", { startsExpr }), interpreterDirective: createToken("#!..."), eq: createToken("=", { beforeExpr, isAssign }), assign: createToken("_=", { beforeExpr, isAssign }), slashAssign: createToken("_=", { beforeExpr, isAssign }), xorAssign: createToken("_=", { beforeExpr, isAssign }), moduloAssign: createToken("_=", { beforeExpr, isAssign }), incDec: createToken("++/--", { prefix, postfix, startsExpr }), bang: createToken("!", { beforeExpr, prefix, startsExpr }), tilde: createToken("~", { beforeExpr, prefix, startsExpr }), doubleCaret: createToken("^^", { startsExpr }), doubleAt: createToken("@@", { startsExpr }), pipeline: createBinop("|>", 0), nullishCoalescing: createBinop("??", 1), logicalOR: createBinop("||", 1), logicalAND: createBinop("&&", 2), bitwiseOR: createBinop("|", 3), bitwiseXOR: createBinop("^", 4), bitwiseAND: createBinop("&", 5), equality: createBinop("==/!=/===/!==", 6), lt: createBinop("/<=/>=", 7), gt: createBinop("/<=/>=", 7), relational: createBinop("/<=/>=", 7), bitShift: createBinop("<>/>>>", 8), bitShiftL: createBinop("<>/>>>", 8), bitShiftR: createBinop("<>/>>>", 8), plusMin: createToken("+/-", { beforeExpr, binop: 9, prefix, startsExpr }), modulo: createToken("%", { binop: 10, startsExpr }), star: createToken("*", { binop: 10 }), slash: createBinop("/", 10), exponent: createToken("**", { beforeExpr, binop: 11, rightAssociative: true }), _in: createKeyword("in", { beforeExpr, binop: 7 }), _instanceof: createKeyword("instanceof", { beforeExpr, binop: 7 }), _break: createKeyword("break"), _case: createKeyword("case", { beforeExpr }), _catch: createKeyword("catch"), _continue: createKeyword("continue"), _debugger: createKeyword("debugger"), _default: createKeyword("default", { beforeExpr }), _else: createKeyword("else", { beforeExpr }), _finally: createKeyword("finally"), _function: createKeyword("function", { startsExpr }), _if: createKeyword("if"), _return: createKeyword("return", { beforeExpr }), _switch: createKeyword("switch"), _throw: createKeyword("throw", { beforeExpr, prefix, startsExpr }), _try: createKeyword("try"), _var: createKeyword("var"), _const: createKeyword("const"), _with: createKeyword("with"), _new: createKeyword("new", { beforeExpr, startsExpr }), _this: createKeyword("this", { startsExpr }), _super: createKeyword("super", { startsExpr }), _class: createKeyword("class", { startsExpr }), _extends: createKeyword("extends", { beforeExpr }), _export: createKeyword("export"), _import: createKeyword("import", { startsExpr }), _null: createKeyword("null", { startsExpr }), _true: createKeyword("true", { startsExpr }), _false: createKeyword("false", { startsExpr }), _typeof: createKeyword("typeof", { beforeExpr, prefix, startsExpr }), _void: createKeyword("void", { beforeExpr, prefix, startsExpr }), _delete: createKeyword("delete", { beforeExpr, prefix, startsExpr }), _do: createKeyword("do", { isLoop, beforeExpr }), _for: createKeyword("for", { isLoop }), _while: createKeyword("while", { isLoop }), _as: createKeywordLike("as", { startsExpr }), _assert: createKeywordLike("assert", { startsExpr }), _async: createKeywordLike("async", { startsExpr }), _await: createKeywordLike("await", { startsExpr }), _from: createKeywordLike("from", { startsExpr }), _get: createKeywordLike("get", { startsExpr }), _let: createKeywordLike("let", { startsExpr }), _meta: createKeywordLike("meta", { startsExpr }), _of: createKeywordLike("of", { startsExpr }), _sent: createKeywordLike("sent", { startsExpr }), _set: createKeywordLike("set", { startsExpr }), _static: createKeywordLike("static", { startsExpr }), _yield: createKeywordLike("yield", { startsExpr }), _asserts: createKeywordLike("asserts", { startsExpr }), _checks: createKeywordLike("checks", { startsExpr }), _exports: createKeywordLike("exports", { startsExpr }), _global: createKeywordLike("global", { startsExpr }), _implements: createKeywordLike("implements", { startsExpr }), _intrinsic: createKeywordLike("intrinsic", { startsExpr }), _infer: createKeywordLike("infer", { startsExpr }), _is: createKeywordLike("is", { startsExpr }), _mixins: createKeywordLike("mixins", { startsExpr }), _proto: createKeywordLike("proto", { startsExpr }), _require: createKeywordLike("require", { startsExpr }), _keyof: createKeywordLike("keyof", { startsExpr }), _readonly: createKeywordLike("readonly", { startsExpr }), _unique: createKeywordLike("unique", { startsExpr }), _abstract: createKeywordLike("abstract", { startsExpr }), _declare: createKeywordLike("declare", { startsExpr }), _enum: createKeywordLike("enum", { startsExpr }), _module: createKeywordLike("module", { startsExpr }), _namespace: createKeywordLike("namespace", { startsExpr }), _interface: createKeywordLike("interface", { startsExpr }), _type: createKeywordLike("type", { startsExpr }), _opaque: createKeywordLike("opaque", { startsExpr }), name: createToken("name", { startsExpr }), string: createToken("string", { startsExpr }), num: createToken("num", { startsExpr }), bigint: createToken("bigint", { startsExpr }), decimal: createToken("decimal", { startsExpr }), regexp: createToken("regexp", { startsExpr }), privateName: createToken("#name", { startsExpr }), eof: createToken("eof"), jsxName: createToken("jsxName"), jsxText: createToken("jsxText", { beforeExpr: true }), jsxTagStart: createToken("jsxTagStart", { startsExpr: true }), jsxTagEnd: createToken("jsxTagEnd"), placeholder: createToken("%%", { startsExpr: true }) }; function tokenIsIdentifier(token) { return token >= 93 && token <= 128; } function tokenKeywordOrIdentifierIsKeyword(token) { return token <= 92; } function tokenIsKeywordOrIdentifier(token) { return token >= 58 && token <= 128; } function tokenIsLiteralPropertyName(token) { return token >= 58 && token <= 132; } function tokenComesBeforeExpression(token) { return tokenBeforeExprs[token]; } function tokenCanStartExpression(token) { return tokenStartsExprs[token]; } function tokenIsAssignment(token) { return token >= 29 && token <= 33; } function tokenIsFlowInterfaceOrTypeOrOpaque(token) { return token >= 125 && token <= 127; } function tokenIsLoop(token) { return token >= 90 && token <= 92; } function tokenIsKeyword(token) { return token >= 58 && token <= 92; } function tokenIsOperator(token) { return token >= 39 && token <= 59; } function tokenIsPostfix(token) { return token === 34; } function tokenIsPrefix(token) { return tokenPrefixes[token]; } function tokenIsTSTypeOperator(token) { return token >= 117 && token <= 119; } function tokenIsTSDeclarationStart(token) { return token >= 120 && token <= 126; } function tokenLabelName(token) { return tokenLabels[token]; } function tokenOperatorPrecedence(token) { return tokenBinops[token]; } function tokenIsRightAssociative(token) { return token === 57; } function tokenIsTemplate(token) { return token >= 24 && token <= 25; } function getExportedToken(token) { return tokenTypes[token]; } { tokenTypes[8].updateContext = context => { context.pop(); }; tokenTypes[5].updateContext = tokenTypes[7].updateContext = tokenTypes[23].updateContext = context => { context.push(types.brace); }; tokenTypes[22].updateContext = context => { if (context[context.length - 1] === types.template) { context.pop(); } else { context.push(types.template); } }; tokenTypes[138].updateContext = context => { context.push(types.j_expr, types.j_oTag); }; } class Position { constructor(line, col, index) { this.line = void 0; this.column = void 0; this.index = void 0; this.line = line; this.column = col; this.index = index; } } class SourceLocation { constructor(start, end) { this.start = void 0; this.end = void 0; this.filename = void 0; this.identifierName = void 0; this.start = start; this.end = end; } } function createPositionWithColumnOffset(position, columnOffset) { const { line, column, index } = position; return new Position(line, column + columnOffset, index + columnOffset); } let nonASCIIidentifierStartChars = "\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u037f\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u052f\u0531-\u0556\u0559\u0560-\u0588\u05d0-\u05ea\u05ef-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u0860-\u086a\u0870-\u0887\u0889-\u088e\u08a0-\u08c9\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0980\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u09fc\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0af9\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c39\u0c3d\u0c58-\u0c5a\u0c5d\u0c60\u0c61\u0c80\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cdd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d04-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d54-\u0d56\u0d5f-\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e86-\u0e8a\u0e8c-\u0ea3\u0ea5\u0ea7-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f5\u13f8-\u13fd\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f8\u1700-\u1711\u171f-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1878\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191e\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19b0-\u19c9\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4c\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1c80-\u1c88\u1c90-\u1cba\u1cbd-\u1cbf\u1ce9-\u1cec\u1cee-\u1cf3\u1cf5\u1cf6\u1cfa\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2118-\u211d\u2124\u2126\u2128\u212a-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309b-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312f\u3131-\u318e\u31a0-\u31bf\u31f0-\u31ff\u3400-\u4dbf\u4e00-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua69d\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua7ca\ua7d0\ua7d1\ua7d3\ua7d5-\ua7d9\ua7f2-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua8fd\ua8fe\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\ua9e0-\ua9e4\ua9e6-\ua9ef\ua9fa-\ua9fe\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa7e-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uab30-\uab5a\uab5c-\uab69\uab70-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc"; let nonASCIIidentifierChars = "\u200c\u200d\xb7\u0300-\u036f\u0387\u0483-\u0487\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u0669\u0670\u06d6-\u06dc\u06df-\u06e4\u06e7\u06e8\u06ea-\u06ed\u06f0-\u06f9\u0711\u0730-\u074a\u07a6-\u07b0\u07c0-\u07c9\u07eb-\u07f3\u07fd\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0859-\u085b\u0898-\u089f\u08ca-\u08e1\u08e3-\u0903\u093a-\u093c\u093e-\u094f\u0951-\u0957\u0962\u0963\u0966-\u096f\u0981-\u0983\u09bc\u09be-\u09c4\u09c7\u09c8\u09cb-\u09cd\u09d7\u09e2\u09e3\u09e6-\u09ef\u09fe\u0a01-\u0a03\u0a3c\u0a3e-\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a66-\u0a71\u0a75\u0a81-\u0a83\u0abc\u0abe-\u0ac5\u0ac7-\u0ac9\u0acb-\u0acd\u0ae2\u0ae3\u0ae6-\u0aef\u0afa-\u0aff\u0b01-\u0b03\u0b3c\u0b3e-\u0b44\u0b47\u0b48\u0b4b-\u0b4d\u0b55-\u0b57\u0b62\u0b63\u0b66-\u0b6f\u0b82\u0bbe-\u0bc2\u0bc6-\u0bc8\u0bca-\u0bcd\u0bd7\u0be6-\u0bef\u0c00-\u0c04\u0c3c\u0c3e-\u0c44\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0c66-\u0c6f\u0c81-\u0c83\u0cbc\u0cbe-\u0cc4\u0cc6-\u0cc8\u0cca-\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0ce6-\u0cef\u0d00-\u0d03\u0d3b\u0d3c\u0d3e-\u0d44\u0d46-\u0d48\u0d4a-\u0d4d\u0d57\u0d62\u0d63\u0d66-\u0d6f\u0d81-\u0d83\u0dca\u0dcf-\u0dd4\u0dd6\u0dd8-\u0ddf\u0de6-\u0def\u0df2\u0df3\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0e50-\u0e59\u0eb1\u0eb4-\u0ebc\u0ec8-\u0ecd\u0ed0-\u0ed9\u0f18\u0f19\u0f20-\u0f29\u0f35\u0f37\u0f39\u0f3e\u0f3f\u0f71-\u0f84\u0f86\u0f87\u0f8d-\u0f97\u0f99-\u0fbc\u0fc6\u102b-\u103e\u1040-\u1049\u1056-\u1059\u105e-\u1060\u1062-\u1064\u1067-\u106d\u1071-\u1074\u1082-\u108d\u108f-\u109d\u135d-\u135f\u1369-\u1371\u1712-\u1715\u1732-\u1734\u1752\u1753\u1772\u1773\u17b4-\u17d3\u17dd\u17e0-\u17e9\u180b-\u180d\u180f-\u1819\u18a9\u1920-\u192b\u1930-\u193b\u1946-\u194f\u19d0-\u19da\u1a17-\u1a1b\u1a55-\u1a5e\u1a60-\u1a7c\u1a7f-\u1a89\u1a90-\u1a99\u1ab0-\u1abd\u1abf-\u1ace\u1b00-\u1b04\u1b34-\u1b44\u1b50-\u1b59\u1b6b-\u1b73\u1b80-\u1b82\u1ba1-\u1bad\u1bb0-\u1bb9\u1be6-\u1bf3\u1c24-\u1c37\u1c40-\u1c49\u1c50-\u1c59\u1cd0-\u1cd2\u1cd4-\u1ce8\u1ced\u1cf4\u1cf7-\u1cf9\u1dc0-\u1dff\u203f\u2040\u2054\u20d0-\u20dc\u20e1\u20e5-\u20f0\u2cef-\u2cf1\u2d7f\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua620-\ua629\ua66f\ua674-\ua67d\ua69e\ua69f\ua6f0\ua6f1\ua802\ua806\ua80b\ua823-\ua827\ua82c\ua880\ua881\ua8b4-\ua8c5\ua8d0-\ua8d9\ua8e0-\ua8f1\ua8ff-\ua909\ua926-\ua92d\ua947-\ua953\ua980-\ua983\ua9b3-\ua9c0\ua9d0-\ua9d9\ua9e5\ua9f0-\ua9f9\uaa29-\uaa36\uaa43\uaa4c\uaa4d\uaa50-\uaa59\uaa7b-\uaa7d\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uaaeb-\uaaef\uaaf5\uaaf6\uabe3-\uabea\uabec\uabed\uabf0-\uabf9\ufb1e\ufe00-\ufe0f\ufe20-\ufe2f\ufe33\ufe34\ufe4d-\ufe4f\uff10-\uff19\uff3f"; const nonASCIIidentifierStart = new RegExp("[" + nonASCIIidentifierStartChars + "]"); const nonASCIIidentifier = new RegExp("[" + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "]"); nonASCIIidentifierStartChars = nonASCIIidentifierChars = null; const astralIdentifierStartCodes = [0, 11, 2, 25, 2, 18, 2, 1, 2, 14, 3, 13, 35, 122, 70, 52, 268, 28, 4, 48, 48, 31, 14, 29, 6, 37, 11, 29, 3, 35, 5, 7, 2, 4, 43, 157, 19, 35, 5, 35, 5, 39, 9, 51, 13, 10, 2, 14, 2, 6, 2, 1, 2, 10, 2, 14, 2, 6, 2, 1, 68, 310, 10, 21, 11, 7, 25, 5, 2, 41, 2, 8, 70, 5, 3, 0, 2, 43, 2, 1, 4, 0, 3, 22, 11, 22, 10, 30, 66, 18, 2, 1, 11, 21, 11, 25, 71, 55, 7, 1, 65, 0, 16, 3, 2, 2, 2, 28, 43, 28, 4, 28, 36, 7, 2, 27, 28, 53, 11, 21, 11, 18, 14, 17, 111, 72, 56, 50, 14, 50, 14, 35, 349, 41, 7, 1, 79, 28, 11, 0, 9, 21, 43, 17, 47, 20, 28, 22, 13, 52, 58, 1, 3, 0, 14, 44, 33, 24, 27, 35, 30, 0, 3, 0, 9, 34, 4, 0, 13, 47, 15, 3, 22, 0, 2, 0, 36, 17, 2, 24, 85, 6, 2, 0, 2, 3, 2, 14, 2, 9, 8, 46, 39, 7, 3, 1, 3, 21, 2, 6, 2, 1, 2, 4, 4, 0, 19, 0, 13, 4, 159, 52, 19, 3, 21, 2, 31, 47, 21, 1, 2, 0, 185, 46, 42, 3, 37, 47, 21, 0, 60, 42, 14, 0, 72, 26, 38, 6, 186, 43, 117, 63, 32, 7, 3, 0, 3, 7, 2, 1, 2, 23, 16, 0, 2, 0, 95, 7, 3, 38, 17, 0, 2, 0, 29, 0, 11, 39, 8, 0, 22, 0, 12, 45, 20, 0, 19, 72, 264, 8, 2, 36, 18, 0, 50, 29, 113, 6, 2, 1, 2, 37, 22, 0, 26, 5, 2, 1, 2, 31, 15, 0, 328, 18, 190, 0, 80, 921, 103, 110, 18, 195, 2637, 96, 16, 1070, 4050, 582, 8634, 568, 8, 30, 18, 78, 18, 29, 19, 47, 17, 3, 32, 20, 6, 18, 689, 63, 129, 74, 6, 0, 67, 12, 65, 1, 2, 0, 29, 6135, 9, 1237, 43, 8, 8936, 3, 2, 6, 2, 1, 2, 290, 46, 2, 18, 3, 9, 395, 2309, 106, 6, 12, 4, 8, 8, 9, 5991, 84, 2, 70, 2, 1, 3, 0, 3, 1, 3, 3, 2, 11, 2, 0, 2, 6, 2, 64, 2, 3, 3, 7, 2, 6, 2, 27, 2, 3, 2, 4, 2, 0, 4, 6, 2, 339, 3, 24, 2, 24, 2, 30, 2, 24, 2, 30, 2, 24, 2, 30, 2, 24, 2, 30, 2, 24, 2, 7, 1845, 30, 482, 44, 11, 6, 17, 0, 322, 29, 19, 43, 1269, 6, 2, 3, 2, 1, 2, 14, 2, 196, 60, 67, 8, 0, 1205, 3, 2, 26, 2, 1, 2, 0, 3, 0, 2, 9, 2, 3, 2, 0, 2, 0, 7, 0, 5, 0, 2, 0, 2, 0, 2, 2, 2, 1, 2, 0, 3, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 1, 2, 0, 3, 3, 2, 6, 2, 3, 2, 3, 2, 0, 2, 9, 2, 16, 6, 2, 2, 4, 2, 16, 4421, 42719, 33, 4152, 8, 221, 3, 5761, 15, 7472, 3104, 541, 1507, 4938]; const astralIdentifierCodes = [509, 0, 227, 0, 150, 4, 294, 9, 1368, 2, 2, 1, 6, 3, 41, 2, 5, 0, 166, 1, 574, 3, 9, 9, 370, 1, 154, 10, 50, 3, 123, 2, 54, 14, 32, 10, 3, 1, 11, 3, 46, 10, 8, 0, 46, 9, 7, 2, 37, 13, 2, 9, 6, 1, 45, 0, 13, 2, 49, 13, 9, 3, 2, 11, 83, 11, 7, 0, 161, 11, 6, 9, 7, 3, 56, 1, 2, 6, 3, 1, 3, 2, 10, 0, 11, 1, 3, 6, 4, 4, 193, 17, 10, 9, 5, 0, 82, 19, 13, 9, 214, 6, 3, 8, 28, 1, 83, 16, 16, 9, 82, 12, 9, 9, 84, 14, 5, 9, 243, 14, 166, 9, 71, 5, 2, 1, 3, 3, 2, 0, 2, 1, 13, 9, 120, 6, 3, 6, 4, 0, 29, 9, 41, 6, 2, 3, 9, 0, 10, 10, 47, 15, 406, 7, 2, 7, 17, 9, 57, 21, 2, 13, 123, 5, 4, 0, 2, 1, 2, 6, 2, 0, 9, 9, 49, 4, 2, 1, 2, 4, 9, 9, 330, 3, 19306, 9, 87, 9, 39, 4, 60, 6, 26, 9, 1014, 0, 2, 54, 8, 3, 82, 0, 12, 1, 19628, 1, 4706, 45, 3, 22, 543, 4, 4, 5, 9, 7, 3, 6, 31, 3, 149, 2, 1418, 49, 513, 54, 5, 49, 9, 0, 15, 0, 23, 4, 2, 14, 1361, 6, 2, 16, 3, 6, 2, 1, 2, 4, 262, 6, 10, 9, 357, 0, 62, 13, 1495, 6, 110, 6, 6, 9, 4759, 9, 787719, 239]; function isInAstralSet(code, set) { let pos = 0x10000; for (let i = 0, length = set.length; i < length; i += 2) { pos += set[i]; if (pos > code) return false; pos += set[i + 1]; if (pos >= code) return true; } return false; } function isIdentifierStart(code) { if (code < 65) return code === 36; if (code <= 90) return true; if (code < 97) return code === 95; if (code <= 122) return true; if (code <= 0xffff) { return code >= 0xaa && nonASCIIidentifierStart.test(String.fromCharCode(code)); } return isInAstralSet(code, astralIdentifierStartCodes); } function isIdentifierChar(code) { if (code < 48) return code === 36; if (code < 58) return true; if (code < 65) return false; if (code <= 90) return true; if (code < 97) return code === 95; if (code <= 122) return true; if (code <= 0xffff) { return code >= 0xaa && nonASCIIidentifier.test(String.fromCharCode(code)); } return isInAstralSet(code, astralIdentifierStartCodes) || isInAstralSet(code, astralIdentifierCodes); } const reservedWords = { keyword: ["break", "case", "catch", "continue", "debugger", "default", "do", "else", "finally", "for", "function", "if", "return", "switch", "throw", "try", "var", "const", "while", "with", "new", "this", "super", "class", "extends", "export", "import", "null", "true", "false", "in", "instanceof", "typeof", "void", "delete"], strict: ["implements", "interface", "let", "package", "private", "protected", "public", "static", "yield"], strictBind: ["eval", "arguments"] }; const keywords = new Set(reservedWords.keyword); const reservedWordsStrictSet = new Set(reservedWords.strict); const reservedWordsStrictBindSet = new Set(reservedWords.strictBind); function isReservedWord(word, inModule) { return inModule && word === "await" || word === "enum"; } function isStrictReservedWord(word, inModule) { return isReservedWord(word, inModule) || reservedWordsStrictSet.has(word); } function isStrictBindOnlyReservedWord(word) { return reservedWordsStrictBindSet.has(word); } function isStrictBindReservedWord(word, inModule) { return isStrictReservedWord(word, inModule) || isStrictBindOnlyReservedWord(word); } function isKeyword(word) { return keywords.has(word); } function isIteratorStart(current, next, next2) { return current === 64 && next === 64 && isIdentifierStart(next2); } const reservedWordLikeSet = new Set(["break", "case", "catch", "continue", "debugger", "default", "do", "else", "finally", "for", "function", "if", "return", "switch", "throw", "try", "var", "const", "while", "with", "new", "this", "super", "class", "extends", "export", "import", "null", "true", "false", "in", "instanceof", "typeof", "void", "delete", "implements", "interface", "let", "package", "private", "protected", "public", "static", "yield", "eval", "arguments", "enum", "await"]); function canBeReservedWord(word) { return reservedWordLikeSet.has(word); } const SCOPE_OTHER = 0b000000000, SCOPE_PROGRAM = 0b000000001, SCOPE_FUNCTION = 0b000000010, SCOPE_ARROW = 0b000000100, SCOPE_SIMPLE_CATCH = 0b000001000, SCOPE_SUPER = 0b000010000, SCOPE_DIRECT_SUPER = 0b000100000, SCOPE_CLASS = 0b001000000, SCOPE_STATIC_BLOCK = 0b010000000, SCOPE_TS_MODULE = 0b100000000, SCOPE_VAR = SCOPE_PROGRAM | SCOPE_FUNCTION | SCOPE_TS_MODULE; const BIND_KIND_VALUE = 0b000000000001, BIND_KIND_TYPE = 0b000000000010, BIND_SCOPE_VAR = 0b000000000100, BIND_SCOPE_LEXICAL = 0b000000001000, BIND_SCOPE_FUNCTION = 0b000000010000, BIND_FLAGS_NONE = 0b000001000000, BIND_FLAGS_CLASS = 0b000010000000, BIND_FLAGS_TS_ENUM = 0b000100000000, BIND_FLAGS_TS_CONST_ENUM = 0b001000000000, BIND_FLAGS_TS_EXPORT_ONLY = 0b010000000000, BIND_FLAGS_FLOW_DECLARE_FN = 0b100000000000; const BIND_CLASS = BIND_KIND_VALUE | BIND_KIND_TYPE | BIND_SCOPE_LEXICAL | BIND_FLAGS_CLASS, BIND_LEXICAL = BIND_KIND_VALUE | 0 | BIND_SCOPE_LEXICAL | 0, BIND_VAR = BIND_KIND_VALUE | 0 | BIND_SCOPE_VAR | 0, BIND_FUNCTION = BIND_KIND_VALUE | 0 | BIND_SCOPE_FUNCTION | 0, BIND_TS_INTERFACE = 0 | BIND_KIND_TYPE | 0 | BIND_FLAGS_CLASS, BIND_TS_TYPE = 0 | BIND_KIND_TYPE | 0 | 0, BIND_TS_ENUM = BIND_KIND_VALUE | BIND_KIND_TYPE | BIND_SCOPE_LEXICAL | BIND_FLAGS_TS_ENUM, BIND_TS_AMBIENT = 0 | 0 | 0 | BIND_FLAGS_TS_EXPORT_ONLY, BIND_NONE = 0 | 0 | 0 | BIND_FLAGS_NONE, BIND_OUTSIDE = BIND_KIND_VALUE | 0 | 0 | BIND_FLAGS_NONE, BIND_TS_CONST_ENUM = BIND_TS_ENUM | BIND_FLAGS_TS_CONST_ENUM, BIND_TS_NAMESPACE = 0 | 0 | 0 | BIND_FLAGS_TS_EXPORT_ONLY, BIND_FLOW_DECLARE_FN = BIND_FLAGS_FLOW_DECLARE_FN; const CLASS_ELEMENT_FLAG_STATIC = 0b100, CLASS_ELEMENT_KIND_GETTER = 0b010, CLASS_ELEMENT_KIND_SETTER = 0b001, CLASS_ELEMENT_KIND_ACCESSOR = CLASS_ELEMENT_KIND_GETTER | CLASS_ELEMENT_KIND_SETTER; const CLASS_ELEMENT_STATIC_GETTER = CLASS_ELEMENT_KIND_GETTER | CLASS_ELEMENT_FLAG_STATIC, CLASS_ELEMENT_STATIC_SETTER = CLASS_ELEMENT_KIND_SETTER | CLASS_ELEMENT_FLAG_STATIC, CLASS_ELEMENT_INSTANCE_GETTER = CLASS_ELEMENT_KIND_GETTER, CLASS_ELEMENT_INSTANCE_SETTER = CLASS_ELEMENT_KIND_SETTER, CLASS_ELEMENT_OTHER = 0; class Scope { constructor(flags) { this.var = new Set(); this.lexical = new Set(); this.functions = new Set(); this.flags = flags; } } class ScopeHandler { constructor(raise, inModule) { this.scopeStack = []; this.undefinedExports = new Map(); this.raise = raise; this.inModule = inModule; } get inFunction() { return (this.currentVarScopeFlags() & SCOPE_FUNCTION) > 0; } get allowSuper() { return (this.currentThisScopeFlags() & SCOPE_SUPER) > 0; } get allowDirectSuper() { return (this.currentThisScopeFlags() & SCOPE_DIRECT_SUPER) > 0; } get inClass() { return (this.currentThisScopeFlags() & SCOPE_CLASS) > 0; } get inClassAndNotInNonArrowFunction() { const flags = this.currentThisScopeFlags(); return (flags & SCOPE_CLASS) > 0 && (flags & SCOPE_FUNCTION) === 0; } get inStaticBlock() { for (let i = this.scopeStack.length - 1;; i--) { const { flags } = this.scopeStack[i]; if (flags & SCOPE_STATIC_BLOCK) { return true; } if (flags & (SCOPE_VAR | SCOPE_CLASS)) { return false; } } } get inNonArrowFunction() { return (this.currentThisScopeFlags() & SCOPE_FUNCTION) > 0; } get treatFunctionsAsVar() { return this.treatFunctionsAsVarInScope(this.currentScope()); } createScope(flags) { return new Scope(flags); } enter(flags) { this.scopeStack.push(this.createScope(flags)); } exit() { this.scopeStack.pop(); } treatFunctionsAsVarInScope(scope) { return !!(scope.flags & SCOPE_FUNCTION || !this.inModule && scope.flags & SCOPE_PROGRAM); } declareName(name, bindingType, loc) { let scope = this.currentScope(); if (bindingType & BIND_SCOPE_LEXICAL || bindingType & BIND_SCOPE_FUNCTION) { this.checkRedeclarationInScope(scope, name, bindingType, loc); if (bindingType & BIND_SCOPE_FUNCTION) { scope.functions.add(name); } else { scope.lexical.add(name); } if (bindingType & BIND_SCOPE_LEXICAL) { this.maybeExportDefined(scope, name); } } else if (bindingType & BIND_SCOPE_VAR) { for (let i = this.scopeStack.length - 1; i >= 0; --i) { scope = this.scopeStack[i]; this.checkRedeclarationInScope(scope, name, bindingType, loc); scope.var.add(name); this.maybeExportDefined(scope, name); if (scope.flags & SCOPE_VAR) break; } } if (this.inModule && scope.flags & SCOPE_PROGRAM) { this.undefinedExports.delete(name); } } maybeExportDefined(scope, name) { if (this.inModule && scope.flags & SCOPE_PROGRAM) { this.undefinedExports.delete(name); } } checkRedeclarationInScope(scope, name, bindingType, loc) { if (this.isRedeclaredInScope(scope, name, bindingType)) { this.raise(ErrorMessages.VarRedeclaration, { at: loc }, name); } } isRedeclaredInScope(scope, name, bindingType) { if (!(bindingType & BIND_KIND_VALUE)) return false; if (bindingType & BIND_SCOPE_LEXICAL) { return scope.lexical.has(name) || scope.functions.has(name) || scope.var.has(name); } if (bindingType & BIND_SCOPE_FUNCTION) { return scope.lexical.has(name) || !this.treatFunctionsAsVarInScope(scope) && scope.var.has(name); } return scope.lexical.has(name) && !(scope.flags & SCOPE_SIMPLE_CATCH && scope.lexical.values().next().value === name) || !this.treatFunctionsAsVarInScope(scope) && scope.functions.has(name); } checkLocalExport(id) { const { name } = id; const topLevelScope = this.scopeStack[0]; if (!topLevelScope.lexical.has(name) && !topLevelScope.var.has(name) && !topLevelScope.functions.has(name)) { this.undefinedExports.set(name, id.loc.start); } } currentScope() { return this.scopeStack[this.scopeStack.length - 1]; } currentVarScopeFlags() { for (let i = this.scopeStack.length - 1;; i--) { const { flags } = this.scopeStack[i]; if (flags & SCOPE_VAR) { return flags; } } } currentThisScopeFlags() { for (let i = this.scopeStack.length - 1;; i--) { const { flags } = this.scopeStack[i]; if (flags & (SCOPE_VAR | SCOPE_CLASS) && !(flags & SCOPE_ARROW)) { return flags; } } } } class FlowScope extends Scope { constructor(...args) { super(...args); this.declareFunctions = new Set(); } } class FlowScopeHandler extends ScopeHandler { createScope(flags) { return new FlowScope(flags); } declareName(name, bindingType, loc) { const scope = this.currentScope(); if (bindingType & BIND_FLAGS_FLOW_DECLARE_FN) { this.checkRedeclarationInScope(scope, name, bindingType, loc); this.maybeExportDefined(scope, name); scope.declareFunctions.add(name); return; } super.declareName(...arguments); } isRedeclaredInScope(scope, name, bindingType) { if (super.isRedeclaredInScope(...arguments)) return true; if (bindingType & BIND_FLAGS_FLOW_DECLARE_FN) { return !scope.declareFunctions.has(name) && (scope.lexical.has(name) || scope.functions.has(name)); } return false; } checkLocalExport(id) { if (!this.scopeStack[0].declareFunctions.has(id.name)) { super.checkLocalExport(id); } } } const lineBreak = /\r\n?|[\n\u2028\u2029]/; const lineBreakG = new RegExp(lineBreak.source, "g"); function isNewLine(code) { switch (code) { case 10: case 13: case 8232: case 8233: return true; default: return false; } } const skipWhiteSpace = /(?:\s|\/\/.*|\/\*[^]*?\*\/)*/g; const skipWhiteSpaceInLine = /(?:[^\S\n\r\u2028\u2029]|\/\/.*|\/\*.*?\*\/)*/y; const skipWhiteSpaceToLineBreak = new RegExp("(?=(" + skipWhiteSpaceInLine.source + "))\\1" + /(?=[\n\r\u2028\u2029]|\/\*(?!.*?\*\/)|$)/.source, "y"); function isWhitespace(code) { switch (code) { case 0x0009: case 0x000b: case 0x000c: case 32: case 160: case 5760: case 0x2000: case 0x2001: case 0x2002: case 0x2003: case 0x2004: case 0x2005: case 0x2006: case 0x2007: case 0x2008: case 0x2009: case 0x200a: case 0x202f: case 0x205f: case 0x3000: case 0xfeff: return true; default: return false; } } class State { constructor() { this.strict = void 0; this.curLine = void 0; this.lineStart = void 0; this.startLoc = void 0; this.endLoc = void 0; this.errors = []; this.potentialArrowAt = -1; this.noArrowAt = []; this.noArrowParamsConversionAt = []; this.maybeInArrowParameters = false; this.inType = false; this.noAnonFunctionType = false; this.hasFlowComment = false; this.isAmbientContext = false; this.inAbstractClass = false; this.topicContext = { maxNumOfResolvableTopics: 0, maxTopicIndex: null }; this.soloAwait = false; this.inFSharpPipelineDirectBody = false; this.labels = []; this.decoratorStack = [[]]; this.comments = []; this.commentStack = []; this.pos = 0; this.type = 135; this.value = null; this.start = 0; this.end = 0; this.lastTokEndLoc = null; this.lastTokStartLoc = null; this.lastTokStart = 0; this.context = [types.brace]; this.canStartJSXElement = true; this.containsEsc = false; this.strictErrors = new Map(); this.tokensLength = 0; } init({ strictMode, sourceType, startLine, startColumn }) { this.strict = strictMode === false ? false : strictMode === true ? true : sourceType === "module"; this.curLine = startLine; this.lineStart = -startColumn; this.startLoc = this.endLoc = new Position(startLine, startColumn, 0); } curPosition() { return new Position(this.curLine, this.pos - this.lineStart, this.pos); } clone(skipArrays) { const state = new State(); const keys = Object.keys(this); for (let i = 0, length = keys.length; i < length; i++) { const key = keys[i]; let val = this[key]; if (!skipArrays && Array.isArray(val)) { val = val.slice(); } state[key] = val; } return state; } } var _isDigit = function isDigit(code) { return code >= 48 && code <= 57; }; const VALID_REGEX_FLAGS = new Set([103, 109, 115, 105, 121, 117, 100, 118]); const forbiddenNumericSeparatorSiblings = { decBinOct: [46, 66, 69, 79, 95, 98, 101, 111], hex: [46, 88, 95, 120] }; const allowedNumericSeparatorSiblings = {}; allowedNumericSeparatorSiblings.bin = [48, 49]; allowedNumericSeparatorSiblings.oct = [...allowedNumericSeparatorSiblings.bin, 50, 51, 52, 53, 54, 55]; allowedNumericSeparatorSiblings.dec = [...allowedNumericSeparatorSiblings.oct, 56, 57]; allowedNumericSeparatorSiblings.hex = [...allowedNumericSeparatorSiblings.dec, 65, 66, 67, 68, 69, 70, 97, 98, 99, 100, 101, 102]; class Token { constructor(state) { this.type = state.type; this.value = state.value; this.start = state.start; this.end = state.end; this.loc = new SourceLocation(state.startLoc, state.endLoc); } } class Tokenizer extends ParserError { constructor(options, input) { super(); this.isLookahead = void 0; this.tokens = []; this.state = new State(); this.state.init(options); this.input = input; this.length = input.length; this.isLookahead = false; } pushToken(token) { this.tokens.length = this.state.tokensLength; this.tokens.push(token); ++this.state.tokensLength; } next() { this.checkKeywordEscapes(); if (this.options.tokens) { this.pushToken(new Token(this.state)); } this.state.lastTokStart = this.state.start; this.state.lastTokEndLoc = this.state.endLoc; this.state.lastTokStartLoc = this.state.startLoc; this.nextToken(); } eat(type) { if (this.match(type)) { this.next(); return true; } else { return false; } } match(type) { return this.state.type === type; } createLookaheadState(state) { return { pos: state.pos, value: null, type: state.type, start: state.start, end: state.end, context: [this.curContext()], inType: state.inType, startLoc: state.startLoc, lastTokEndLoc: state.lastTokEndLoc, curLine: state.curLine, lineStart: state.lineStart, curPosition: state.curPosition }; } lookahead() { const old = this.state; this.state = this.createLookaheadState(old); this.isLookahead = true; this.nextToken(); this.isLookahead = false; const curr = this.state; this.state = old; return curr; } nextTokenStart() { return this.nextTokenStartSince(this.state.pos); } nextTokenStartSince(pos) { skipWhiteSpace.lastIndex = pos; return skipWhiteSpace.test(this.input) ? skipWhiteSpace.lastIndex : pos; } lookaheadCharCode() { return this.input.charCodeAt(this.nextTokenStart()); } codePointAtPos(pos) { let cp = this.input.charCodeAt(pos); if ((cp & 0xfc00) === 0xd800 && ++pos < this.input.length) { const trail = this.input.charCodeAt(pos); if ((trail & 0xfc00) === 0xdc00) { cp = 0x10000 + ((cp & 0x3ff) << 10) + (trail & 0x3ff); } } return cp; } setStrict(strict) { this.state.strict = strict; if (strict) { this.state.strictErrors.forEach(({ message, loc }) => this.raise(message, { at: loc })); this.state.strictErrors.clear(); } } curContext() { return this.state.context[this.state.context.length - 1]; } nextToken() { this.skipSpace(); this.state.start = this.state.pos; if (!this.isLookahead) this.state.startLoc = this.state.curPosition(); if (this.state.pos >= this.length) { this.finishToken(135); return; } this.getTokenFromCode(this.codePointAtPos(this.state.pos)); } skipBlockComment() { let startLoc; if (!this.isLookahead) startLoc = this.state.curPosition(); const start = this.state.pos; const end = this.input.indexOf("*/", start + 2); if (end === -1) { throw this.raise(ErrorMessages.UnterminatedComment, { at: this.state.curPosition() }); } this.state.pos = end + 2; lineBreakG.lastIndex = start + 2; while (lineBreakG.test(this.input) && lineBreakG.lastIndex <= end) { ++this.state.curLine; this.state.lineStart = lineBreakG.lastIndex; } if (this.isLookahead) return; const comment = { type: "CommentBlock", value: this.input.slice(start + 2, end), start, end: end + 2, loc: new SourceLocation(startLoc, this.state.curPosition()) }; if (this.options.tokens) this.pushToken(comment); return comment; } skipLineComment(startSkip) { const start = this.state.pos; let startLoc; if (!this.isLookahead) startLoc = this.state.curPosition(); let ch = this.input.charCodeAt(this.state.pos += startSkip); if (this.state.pos < this.length) { while (!isNewLine(ch) && ++this.state.pos < this.length) { ch = this.input.charCodeAt(this.state.pos); } } if (this.isLookahead) return; const end = this.state.pos; const value = this.input.slice(start + startSkip, end); const comment = { type: "CommentLine", value, start, end, loc: new SourceLocation(startLoc, this.state.curPosition()) }; if (this.options.tokens) this.pushToken(comment); return comment; } skipSpace() { const spaceStart = this.state.pos; const comments = []; loop: while (this.state.pos < this.length) { const ch = this.input.charCodeAt(this.state.pos); switch (ch) { case 32: case 160: case 9: ++this.state.pos; break; case 13: if (this.input.charCodeAt(this.state.pos + 1) === 10) { ++this.state.pos; } case 10: case 8232: case 8233: ++this.state.pos; ++this.state.curLine; this.state.lineStart = this.state.pos; break; case 47: switch (this.input.charCodeAt(this.state.pos + 1)) { case 42: { const comment = this.skipBlockComment(); if (comment !== undefined) { this.addComment(comment); if (this.options.attachComment) comments.push(comment); } break; } case 47: { const comment = this.skipLineComment(2); if (comment !== undefined) { this.addComment(comment); if (this.options.attachComment) comments.push(comment); } break; } default: break loop; } break; default: if (isWhitespace(ch)) { ++this.state.pos; } else if (ch === 45 && !this.inModule) { const pos = this.state.pos; if (this.input.charCodeAt(pos + 1) === 45 && this.input.charCodeAt(pos + 2) === 62 && (spaceStart === 0 || this.state.lineStart > spaceStart)) { const comment = this.skipLineComment(3); if (comment !== undefined) { this.addComment(comment); if (this.options.attachComment) comments.push(comment); } } else { break loop; } } else if (ch === 60 && !this.inModule) { const pos = this.state.pos; if (this.input.charCodeAt(pos + 1) === 33 && this.input.charCodeAt(pos + 2) === 45 && this.input.charCodeAt(pos + 3) === 45) { const comment = this.skipLineComment(4); if (comment !== undefined) { this.addComment(comment); if (this.options.attachComment) comments.push(comment); } } else { break loop; } } else { break loop; } } } if (comments.length > 0) { const end = this.state.pos; const CommentWhitespace = { start: spaceStart, end, comments, leadingNode: null, trailingNode: null, containingNode: null }; this.state.commentStack.push(CommentWhitespace); } } finishToken(type, val) { this.state.end = this.state.pos; this.state.endLoc = this.state.curPosition(); const prevType = this.state.type; this.state.type = type; this.state.value = val; if (!this.isLookahead) { this.updateContext(prevType); } } replaceToken(type) { this.state.type = type; this.updateContext(); } readToken_numberSign() { if (this.state.pos === 0 && this.readToken_interpreter()) { return; } const nextPos = this.state.pos + 1; const next = this.codePointAtPos(nextPos); if (next >= 48 && next <= 57) { throw this.raise(ErrorMessages.UnexpectedDigitAfterHash, { at: this.state.curPosition() }); } if (next === 123 || next === 91 && this.hasPlugin("recordAndTuple")) { this.expectPlugin("recordAndTuple"); if (this.getPluginOption("recordAndTuple", "syntaxType") !== "hash") { throw this.raise(next === 123 ? ErrorMessages.RecordExpressionHashIncorrectStartSyntaxType : ErrorMessages.TupleExpressionHashIncorrectStartSyntaxType, { at: this.state.curPosition() }); } this.state.pos += 2; if (next === 123) { this.finishToken(7); } else { this.finishToken(1); } } else if (isIdentifierStart(next)) { ++this.state.pos; this.finishToken(134, this.readWord1(next)); } else if (next === 92) { ++this.state.pos; this.finishToken(134, this.readWord1()); } else { this.finishOp(27, 1); } } readToken_dot() { const next = this.input.charCodeAt(this.state.pos + 1); if (next >= 48 && next <= 57) { this.readNumber(true); return; } if (next === 46 && this.input.charCodeAt(this.state.pos + 2) === 46) { this.state.pos += 3; this.finishToken(21); } else { ++this.state.pos; this.finishToken(16); } } readToken_slash() { const next = this.input.charCodeAt(this.state.pos + 1); if (next === 61) { this.finishOp(31, 2); } else { this.finishOp(56, 1); } } readToken_interpreter() { if (this.state.pos !== 0 || this.length < 2) return false; let ch = this.input.charCodeAt(this.state.pos + 1); if (ch !== 33) return false; const start = this.state.pos; this.state.pos += 1; while (!isNewLine(ch) && ++this.state.pos < this.length) { ch = this.input.charCodeAt(this.state.pos); } const value = this.input.slice(start + 2, this.state.pos); this.finishToken(28, value); return true; } readToken_mult_modulo(code) { let type = code === 42 ? 55 : 54; let width = 1; let next = this.input.charCodeAt(this.state.pos + 1); if (code === 42 && next === 42) { width++; next = this.input.charCodeAt(this.state.pos + 2); type = 57; } if (next === 61 && !this.state.inType) { width++; type = code === 37 ? 33 : 30; } this.finishOp(type, width); } readToken_pipe_amp(code) { const next = this.input.charCodeAt(this.state.pos + 1); if (next === code) { if (this.input.charCodeAt(this.state.pos + 2) === 61) { this.finishOp(30, 3); } else { this.finishOp(code === 124 ? 41 : 42, 2); } return; } if (code === 124) { if (next === 62) { this.finishOp(39, 2); return; } if (this.hasPlugin("recordAndTuple") && next === 125) { if (this.getPluginOption("recordAndTuple", "syntaxType") !== "bar") { throw this.raise(ErrorMessages.RecordExpressionBarIncorrectEndSyntaxType, { at: this.state.curPosition() }); } this.state.pos += 2; this.finishToken(9); return; } if (this.hasPlugin("recordAndTuple") && next === 93) { if (this.getPluginOption("recordAndTuple", "syntaxType") !== "bar") { throw this.raise(ErrorMessages.TupleExpressionBarIncorrectEndSyntaxType, { at: this.state.curPosition() }); } this.state.pos += 2; this.finishToken(4); return; } } if (next === 61) { this.finishOp(30, 2); return; } this.finishOp(code === 124 ? 43 : 45, 1); } readToken_caret() { const next = this.input.charCodeAt(this.state.pos + 1); if (next === 61 && !this.state.inType) { this.finishOp(32, 2); } else if (next === 94 && this.hasPlugin(["pipelineOperator", { proposal: "hack", topicToken: "^^" }])) { this.finishOp(37, 2); const lookaheadCh = this.input.codePointAt(this.state.pos); if (lookaheadCh === 94) { throw this.unexpected(); } } else { this.finishOp(44, 1); } } readToken_atSign() { const next = this.input.charCodeAt(this.state.pos + 1); if (next === 64 && this.hasPlugin(["pipelineOperator", { proposal: "hack", topicToken: "@@" }])) { this.finishOp(38, 2); } else { this.finishOp(26, 1); } } readToken_plus_min(code) { const next = this.input.charCodeAt(this.state.pos + 1); if (next === code) { this.finishOp(34, 2); return; } if (next === 61) { this.finishOp(30, 2); } else { this.finishOp(53, 1); } } readToken_lt() { const { pos } = this.state; const next = this.input.charCodeAt(pos + 1); if (next === 60) { if (this.input.charCodeAt(pos + 2) === 61) { this.finishOp(30, 3); return; } this.finishOp(51, 2); return; } if (next === 61) { this.finishOp(49, 2); return; } this.finishOp(47, 1); } readToken_gt() { const { pos } = this.state; const next = this.input.charCodeAt(pos + 1); if (next === 62) { const size = this.input.charCodeAt(pos + 2) === 62 ? 3 : 2; if (this.input.charCodeAt(pos + size) === 61) { this.finishOp(30, size + 1); return; } this.finishOp(52, size); return; } if (next === 61) { this.finishOp(49, 2); return; } this.finishOp(48, 1); } readToken_eq_excl(code) { const next = this.input.charCodeAt(this.state.pos + 1); if (next === 61) { this.finishOp(46, this.input.charCodeAt(this.state.pos + 2) === 61 ? 3 : 2); return; } if (code === 61 && next === 62) { this.state.pos += 2; this.finishToken(19); return; } this.finishOp(code === 61 ? 29 : 35, 1); } readToken_question() { const next = this.input.charCodeAt(this.state.pos + 1); const next2 = this.input.charCodeAt(this.state.pos + 2); if (next === 63) { if (next2 === 61) { this.finishOp(30, 3); } else { this.finishOp(40, 2); } } else if (next === 46 && !(next2 >= 48 && next2 <= 57)) { this.state.pos += 2; this.finishToken(18); } else { ++this.state.pos; this.finishToken(17); } } getTokenFromCode(code) { switch (code) { case 46: this.readToken_dot(); return; case 40: ++this.state.pos; this.finishToken(10); return; case 41: ++this.state.pos; this.finishToken(11); return; case 59: ++this.state.pos; this.finishToken(13); return; case 44: ++this.state.pos; this.finishToken(12); return; case 91: if (this.hasPlugin("recordAndTuple") && this.input.charCodeAt(this.state.pos + 1) === 124) { if (this.getPluginOption("recordAndTuple", "syntaxType") !== "bar") { throw this.raise(ErrorMessages.TupleExpressionBarIncorrectStartSyntaxType, { at: this.state.curPosition() }); } this.state.pos += 2; this.finishToken(2); } else { ++this.state.pos; this.finishToken(0); } return; case 93: ++this.state.pos; this.finishToken(3); return; case 123: if (this.hasPlugin("recordAndTuple") && this.input.charCodeAt(this.state.pos + 1) === 124) { if (this.getPluginOption("recordAndTuple", "syntaxType") !== "bar") { throw this.raise(ErrorMessages.RecordExpressionBarIncorrectStartSyntaxType, { at: this.state.curPosition() }); } this.state.pos += 2; this.finishToken(6); } else { ++this.state.pos; this.finishToken(5); } return; case 125: ++this.state.pos; this.finishToken(8); return; case 58: if (this.hasPlugin("functionBind") && this.input.charCodeAt(this.state.pos + 1) === 58) { this.finishOp(15, 2); } else { ++this.state.pos; this.finishToken(14); } return; case 63: this.readToken_question(); return; case 96: this.readTemplateToken(); return; case 48: { const next = this.input.charCodeAt(this.state.pos + 1); if (next === 120 || next === 88) { this.readRadixNumber(16); return; } if (next === 111 || next === 79) { this.readRadixNumber(8); return; } if (next === 98 || next === 66) { this.readRadixNumber(2); return; } } case 49: case 50: case 51: case 52: case 53: case 54: case 55: case 56: case 57: this.readNumber(false); return; case 34: case 39: this.readString(code); return; case 47: this.readToken_slash(); return; case 37: case 42: this.readToken_mult_modulo(code); return; case 124: case 38: this.readToken_pipe_amp(code); return; case 94: this.readToken_caret(); return; case 43: case 45: this.readToken_plus_min(code); return; case 60: this.readToken_lt(); return; case 62: this.readToken_gt(); return; case 61: case 33: this.readToken_eq_excl(code); return; case 126: this.finishOp(36, 1); return; case 64: this.readToken_atSign(); return; case 35: this.readToken_numberSign(); return; case 92: this.readWord(); return; default: if (isIdentifierStart(code)) { this.readWord(code); return; } } throw this.raise(ErrorMessages.InvalidOrUnexpectedToken, { at: this.state.curPosition() }, String.fromCodePoint(code)); } finishOp(type, size) { const str = this.input.slice(this.state.pos, this.state.pos + size); this.state.pos += size; this.finishToken(type, str); } readRegexp() { const startLoc = this.state.startLoc; const start = this.state.start + 1; let escaped, inClass; let { pos } = this.state; for (;; ++pos) { if (pos >= this.length) { throw this.raise(ErrorMessages.UnterminatedRegExp, { at: createPositionWithColumnOffset(startLoc, 1) }); } const ch = this.input.charCodeAt(pos); if (isNewLine(ch)) { throw this.raise(ErrorMessages.UnterminatedRegExp, { at: createPositionWithColumnOffset(startLoc, 1) }); } if (escaped) { escaped = false; } else { if (ch === 91) { inClass = true; } else if (ch === 93 && inClass) { inClass = false; } else if (ch === 47 && !inClass) { break; } escaped = ch === 92; } } const content = this.input.slice(start, pos); ++pos; let mods = ""; const nextPos = () => createPositionWithColumnOffset(startLoc, pos + 2 - start); while (pos < this.length) { const cp = this.codePointAtPos(pos); const char = String.fromCharCode(cp); if (VALID_REGEX_FLAGS.has(cp)) { if (cp === 118) { this.expectPlugin("regexpUnicodeSets", nextPos()); if (mods.includes("u")) { this.raise(ErrorMessages.IncompatibleRegExpUVFlags, { at: nextPos() }); } } else if (cp === 117) { if (mods.includes("v")) { this.raise(ErrorMessages.IncompatibleRegExpUVFlags, { at: nextPos() }); } } if (mods.includes(char)) { this.raise(ErrorMessages.DuplicateRegExpFlags, { at: nextPos() }); } } else if (isIdentifierChar(cp) || cp === 92) { this.raise(ErrorMessages.MalformedRegExpFlags, { at: nextPos() }); } else { break; } ++pos; mods += char; } this.state.pos = pos; this.finishToken(133, { pattern: content, flags: mods }); } readInt(radix, len, forceLen, allowNumSeparator = true) { const start = this.state.pos; const forbiddenSiblings = radix === 16 ? forbiddenNumericSeparatorSiblings.hex : forbiddenNumericSeparatorSiblings.decBinOct; const allowedSiblings = radix === 16 ? allowedNumericSeparatorSiblings.hex : radix === 10 ? allowedNumericSeparatorSiblings.dec : radix === 8 ? allowedNumericSeparatorSiblings.oct : allowedNumericSeparatorSiblings.bin; let invalid = false; let total = 0; for (let i = 0, e = len == null ? Infinity : len; i < e; ++i) { const code = this.input.charCodeAt(this.state.pos); let val; if (code === 95) { const prev = this.input.charCodeAt(this.state.pos - 1); const next = this.input.charCodeAt(this.state.pos + 1); if (allowedSiblings.indexOf(next) === -1) { this.raise(ErrorMessages.UnexpectedNumericSeparator, { at: this.state.curPosition() }); } else if (forbiddenSiblings.indexOf(prev) > -1 || forbiddenSiblings.indexOf(next) > -1 || Number.isNaN(next)) { this.raise(ErrorMessages.UnexpectedNumericSeparator, { at: this.state.curPosition() }); } if (!allowNumSeparator) { this.raise(ErrorMessages.NumericSeparatorInEscapeSequence, { at: this.state.curPosition() }); } ++this.state.pos; continue; } if (code >= 97) { val = code - 97 + 10; } else if (code >= 65) { val = code - 65 + 10; } else if (_isDigit(code)) { val = code - 48; } else { val = Infinity; } if (val >= radix) { if (this.options.errorRecovery && val <= 9) { val = 0; this.raise(ErrorMessages.InvalidDigit, { at: this.state.curPosition() }, radix); } else if (forceLen) { val = 0; invalid = true; } else { break; } } ++this.state.pos; total = total * radix + val; } if (this.state.pos === start || len != null && this.state.pos - start !== len || invalid) { return null; } return total; } readRadixNumber(radix) { const startLoc = this.state.curPosition(); let isBigInt = false; this.state.pos += 2; const val = this.readInt(radix); if (val == null) { this.raise(ErrorMessages.InvalidDigit, { at: createPositionWithColumnOffset(startLoc, 2) }, radix); } const next = this.input.charCodeAt(this.state.pos); if (next === 110) { ++this.state.pos; isBigInt = true; } else if (next === 109) { throw this.raise(ErrorMessages.InvalidDecimal, { at: startLoc }); } if (isIdentifierStart(this.codePointAtPos(this.state.pos))) { throw this.raise(ErrorMessages.NumberIdentifier, { at: this.state.curPosition() }); } if (isBigInt) { const str = this.input.slice(startLoc.index, this.state.pos).replace(/[_n]/g, ""); this.finishToken(131, str); return; } this.finishToken(130, val); } readNumber(startsWithDot) { const start = this.state.pos; const startLoc = this.state.curPosition(); let isFloat = false; let isBigInt = false; let isDecimal = false; let hasExponent = false; let isOctal = false; if (!startsWithDot && this.readInt(10) === null) { this.raise(ErrorMessages.InvalidNumber, { at: this.state.curPosition() }); } const hasLeadingZero = this.state.pos - start >= 2 && this.input.charCodeAt(start) === 48; if (hasLeadingZero) { const integer = this.input.slice(start, this.state.pos); this.recordStrictModeErrors(ErrorMessages.StrictOctalLiteral, startLoc); if (!this.state.strict) { const underscorePos = integer.indexOf("_"); if (underscorePos > 0) { this.raise(ErrorMessages.ZeroDigitNumericSeparator, { at: createPositionWithColumnOffset(startLoc, underscorePos) }); } } isOctal = hasLeadingZero && !/[89]/.test(integer); } let next = this.input.charCodeAt(this.state.pos); if (next === 46 && !isOctal) { ++this.state.pos; this.readInt(10); isFloat = true; next = this.input.charCodeAt(this.state.pos); } if ((next === 69 || next === 101) && !isOctal) { next = this.input.charCodeAt(++this.state.pos); if (next === 43 || next === 45) { ++this.state.pos; } if (this.readInt(10) === null) { this.raise(ErrorMessages.InvalidOrMissingExponent, { at: startLoc }); } isFloat = true; hasExponent = true; next = this.input.charCodeAt(this.state.pos); } if (next === 110) { if (isFloat || hasLeadingZero) { this.raise(ErrorMessages.InvalidBigIntLiteral, { at: startLoc }); } ++this.state.pos; isBigInt = true; } if (next === 109) { this.expectPlugin("decimal", this.state.curPosition()); if (hasExponent || hasLeadingZero) { this.raise(ErrorMessages.InvalidDecimal, { at: startLoc }); } ++this.state.pos; isDecimal = true; } if (isIdentifierStart(this.codePointAtPos(this.state.pos))) { throw this.raise(ErrorMessages.NumberIdentifier, { at: this.state.curPosition() }); } const str = this.input.slice(start, this.state.pos).replace(/[_mn]/g, ""); if (isBigInt) { this.finishToken(131, str); return; } if (isDecimal) { this.finishToken(132, str); return; } const val = isOctal ? parseInt(str, 8) : parseFloat(str); this.finishToken(130, val); } readCodePoint(throwOnInvalid) { const ch = this.input.charCodeAt(this.state.pos); let code; if (ch === 123) { ++this.state.pos; code = this.readHexChar(this.input.indexOf("}", this.state.pos) - this.state.pos, true, throwOnInvalid); ++this.state.pos; if (code !== null && code > 0x10ffff) { if (throwOnInvalid) { this.raise(ErrorMessages.InvalidCodePoint, { at: this.state.curPosition() }); } else { return null; } } } else { code = this.readHexChar(4, false, throwOnInvalid); } return code; } readString(quote) { let out = "", chunkStart = ++this.state.pos; for (;;) { if (this.state.pos >= this.length) { throw this.raise(ErrorMessages.UnterminatedString, { at: this.state.startLoc }); } const ch = this.input.charCodeAt(this.state.pos); if (ch === quote) break; if (ch === 92) { out += this.input.slice(chunkStart, this.state.pos); out += this.readEscapedChar(false); chunkStart = this.state.pos; } else if (ch === 8232 || ch === 8233) { ++this.state.pos; ++this.state.curLine; this.state.lineStart = this.state.pos; } else if (isNewLine(ch)) { throw this.raise(ErrorMessages.UnterminatedString, { at: this.state.startLoc }); } else { ++this.state.pos; } } out += this.input.slice(chunkStart, this.state.pos++); this.finishToken(129, out); } readTemplateContinuation() { if (!this.match(8)) { this.unexpected(null, 8); } this.state.pos--; this.readTemplateToken(); } readTemplateToken() { let out = "", chunkStart = this.state.pos, containsInvalid = false; ++this.state.pos; for (;;) { if (this.state.pos >= this.length) { throw this.raise(ErrorMessages.UnterminatedTemplate, { at: createPositionWithColumnOffset(this.state.startLoc, 1) }); } const ch = this.input.charCodeAt(this.state.pos); if (ch === 96) { ++this.state.pos; out += this.input.slice(chunkStart, this.state.pos); this.finishToken(24, containsInvalid ? null : out); return; } if (ch === 36 && this.input.charCodeAt(this.state.pos + 1) === 123) { this.state.pos += 2; out += this.input.slice(chunkStart, this.state.pos); this.finishToken(25, containsInvalid ? null : out); return; } if (ch === 92) { out += this.input.slice(chunkStart, this.state.pos); const escaped = this.readEscapedChar(true); if (escaped === null) { containsInvalid = true; } else { out += escaped; } chunkStart = this.state.pos; } else if (isNewLine(ch)) { out += this.input.slice(chunkStart, this.state.pos); ++this.state.pos; switch (ch) { case 13: if (this.input.charCodeAt(this.state.pos) === 10) { ++this.state.pos; } case 10: out += "\n"; break; default: out += String.fromCharCode(ch); break; } ++this.state.curLine; this.state.lineStart = this.state.pos; chunkStart = this.state.pos; } else { ++this.state.pos; } } } recordStrictModeErrors(message, loc) { if (this.state.strict && !this.state.strictErrors.has(loc.index)) { this.raise(message, { at: loc }); } else { this.state.strictErrors.set(loc.index, { loc, message }); } } readEscapedChar(inTemplate) { const throwOnInvalid = !inTemplate; const ch = this.input.charCodeAt(++this.state.pos); ++this.state.pos; switch (ch) { case 110: return "\n"; case 114: return "\r"; case 120: { const code = this.readHexChar(2, false, throwOnInvalid); return code === null ? null : String.fromCharCode(code); } case 117: { const code = this.readCodePoint(throwOnInvalid); return code === null ? null : String.fromCodePoint(code); } case 116: return "\t"; case 98: return "\b"; case 118: return "\u000b"; case 102: return "\f"; case 13: if (this.input.charCodeAt(this.state.pos) === 10) { ++this.state.pos; } case 10: this.state.lineStart = this.state.pos; ++this.state.curLine; case 8232: case 8233: return ""; case 56: case 57: if (inTemplate) { return null; } else { this.recordStrictModeErrors(ErrorMessages.StrictNumericEscape, createPositionWithColumnOffset(this.state.curPosition(), -1)); } default: if (ch >= 48 && ch <= 55) { const codePos = createPositionWithColumnOffset(this.state.curPosition(), -1); const match = this.input.substr(this.state.pos - 1, 3).match(/^[0-7]+/); let octalStr = match[0]; let octal = parseInt(octalStr, 8); if (octal > 255) { octalStr = octalStr.slice(0, -1); octal = parseInt(octalStr, 8); } this.state.pos += octalStr.length - 1; const next = this.input.charCodeAt(this.state.pos); if (octalStr !== "0" || next === 56 || next === 57) { if (inTemplate) { return null; } else { this.recordStrictModeErrors(ErrorMessages.StrictNumericEscape, codePos); } } return String.fromCharCode(octal); } return String.fromCharCode(ch); } } readHexChar(len, forceLen, throwOnInvalid) { const codeLoc = this.state.curPosition(); const n = this.readInt(16, len, forceLen, false); if (n === null) { if (throwOnInvalid) { this.raise(ErrorMessages.InvalidEscapeSequence, { at: codeLoc }); } else { this.state.pos = codeLoc.index - 1; } } return n; } readWord1(firstCode) { this.state.containsEsc = false; let word = ""; const start = this.state.pos; let chunkStart = this.state.pos; if (firstCode !== undefined) { this.state.pos += firstCode <= 0xffff ? 1 : 2; } while (this.state.pos < this.length) { const ch = this.codePointAtPos(this.state.pos); if (isIdentifierChar(ch)) { this.state.pos += ch <= 0xffff ? 1 : 2; } else if (ch === 92) { this.state.containsEsc = true; word += this.input.slice(chunkStart, this.state.pos); const escStart = this.state.curPosition(); const identifierCheck = this.state.pos === start ? isIdentifierStart : isIdentifierChar; if (this.input.charCodeAt(++this.state.pos) !== 117) { this.raise(ErrorMessages.MissingUnicodeEscape, { at: this.state.curPosition() }); chunkStart = this.state.pos - 1; continue; } ++this.state.pos; const esc = this.readCodePoint(true); if (esc !== null) { if (!identifierCheck(esc)) { this.raise(ErrorMessages.EscapedCharNotAnIdentifier, { at: escStart }); } word += String.fromCodePoint(esc); } chunkStart = this.state.pos; } else { break; } } return word + this.input.slice(chunkStart, this.state.pos); } readWord(firstCode) { const word = this.readWord1(firstCode); const type = keywords$1.get(word); if (type !== undefined) { this.finishToken(type, tokenLabelName(type)); } else { this.finishToken(128, word); } } checkKeywordEscapes() { const { type } = this.state; if (tokenIsKeyword(type) && this.state.containsEsc) { this.raise(ErrorMessages.InvalidEscapedReservedWord, { at: this.state.startLoc }, tokenLabelName(type)); } } updateContext(prevType) {} } class ClassScope { constructor() { this.privateNames = new Set(); this.loneAccessors = new Map(); this.undefinedPrivateNames = new Map(); } } class ClassScopeHandler { constructor(raise) { this.stack = []; this.undefinedPrivateNames = new Map(); this.raise = raise; } current() { return this.stack[this.stack.length - 1]; } enter() { this.stack.push(new ClassScope()); } exit() { const oldClassScope = this.stack.pop(); const current = this.current(); for (const [name, loc] of Array.from(oldClassScope.undefinedPrivateNames)) { if (current) { if (!current.undefinedPrivateNames.has(name)) { current.undefinedPrivateNames.set(name, loc); } } else { this.raise(ErrorMessages.InvalidPrivateFieldResolution, { at: loc }, name); } } } declarePrivateName(name, elementType, loc) { const { privateNames, loneAccessors, undefinedPrivateNames } = this.current(); let redefined = privateNames.has(name); if (elementType & CLASS_ELEMENT_KIND_ACCESSOR) { const accessor = redefined && loneAccessors.get(name); if (accessor) { const oldStatic = accessor & CLASS_ELEMENT_FLAG_STATIC; const newStatic = elementType & CLASS_ELEMENT_FLAG_STATIC; const oldKind = accessor & CLASS_ELEMENT_KIND_ACCESSOR; const newKind = elementType & CLASS_ELEMENT_KIND_ACCESSOR; redefined = oldKind === newKind || oldStatic !== newStatic; if (!redefined) loneAccessors.delete(name); } else if (!redefined) { loneAccessors.set(name, elementType); } } if (redefined) { this.raise(ErrorMessages.PrivateNameRedeclaration, { at: loc }, name); } privateNames.add(name); undefinedPrivateNames.delete(name); } usePrivateName(name, loc) { let classScope; for (classScope of this.stack) { if (classScope.privateNames.has(name)) return; } if (classScope) { classScope.undefinedPrivateNames.set(name, loc); } else { this.raise(ErrorMessages.InvalidPrivateFieldResolution, { at: loc }, name); } } } const kExpression = 0, kMaybeArrowParameterDeclaration = 1, kMaybeAsyncArrowParameterDeclaration = 2, kParameterDeclaration = 3; class ExpressionScope { constructor(type = kExpression) { this.type = void 0; this.type = type; } canBeArrowParameterDeclaration() { return this.type === kMaybeAsyncArrowParameterDeclaration || this.type === kMaybeArrowParameterDeclaration; } isCertainlyParameterDeclaration() { return this.type === kParameterDeclaration; } } class ArrowHeadParsingScope extends ExpressionScope { constructor(type) { super(type); this.errors = new Map(); } recordDeclarationError(message, loc) { this.errors.set(loc.index, { message, loc }); } clearDeclarationError(loc) { this.errors.delete(loc.index); } iterateErrors(iterator) { this.errors.forEach(iterator); } } class ExpressionScopeHandler { constructor(raise) { this.stack = [new ExpressionScope()]; this.raise = raise; } enter(scope) { this.stack.push(scope); } exit() { this.stack.pop(); } recordParameterInitializerError(loc, template) { const { stack } = this; let i = stack.length - 1; let scope = stack[i]; while (!scope.isCertainlyParameterDeclaration()) { if (scope.canBeArrowParameterDeclaration()) { scope.recordDeclarationError(template, loc); } else { return; } scope = stack[--i]; } this.raise(template, { at: loc }); } recordParenthesizedIdentifierError(template, loc) { const { stack } = this; const scope = stack[stack.length - 1]; if (scope.isCertainlyParameterDeclaration()) { this.raise(template, { at: loc }); } else if (scope.canBeArrowParameterDeclaration()) { scope.recordDeclarationError(template, loc); } else { return; } } recordAsyncArrowParametersError(template, loc) { const { stack } = this; let i = stack.length - 1; let scope = stack[i]; while (scope.canBeArrowParameterDeclaration()) { if (scope.type === kMaybeAsyncArrowParameterDeclaration) { scope.recordDeclarationError(template, loc); } scope = stack[--i]; } } validateAsPattern() { const { stack } = this; const currentScope = stack[stack.length - 1]; if (!currentScope.canBeArrowParameterDeclaration()) return; currentScope.iterateErrors(({ message, loc }) => { this.raise(message, { at: loc }); let i = stack.length - 2; let scope = stack[i]; while (scope.canBeArrowParameterDeclaration()) { scope.clearDeclarationError(loc); scope = stack[--i]; } }); } } function newParameterDeclarationScope() { return new ExpressionScope(kParameterDeclaration); } function newArrowHeadScope() { return new ArrowHeadParsingScope(kMaybeArrowParameterDeclaration); } function newAsyncArrowScope() { return new ArrowHeadParsingScope(kMaybeAsyncArrowParameterDeclaration); } function newExpressionScope() { return new ExpressionScope(); } const PARAM = 0b0000, PARAM_YIELD = 0b0001, PARAM_AWAIT = 0b0010, PARAM_RETURN = 0b0100, PARAM_IN = 0b1000; class ProductionParameterHandler { constructor() { this.stacks = []; } enter(flags) { this.stacks.push(flags); } exit() { this.stacks.pop(); } currentFlags() { return this.stacks[this.stacks.length - 1]; } get hasAwait() { return (this.currentFlags() & PARAM_AWAIT) > 0; } get hasYield() { return (this.currentFlags() & PARAM_YIELD) > 0; } get hasReturn() { return (this.currentFlags() & PARAM_RETURN) > 0; } get hasIn() { return (this.currentFlags() & PARAM_IN) > 0; } } function functionFlags(isAsync, isGenerator) { return (isAsync ? PARAM_AWAIT : 0) | (isGenerator ? PARAM_YIELD : 0); } class UtilParser extends Tokenizer { addExtra(node, key, value, enumerable = true) { if (!node) return; const extra = node.extra = node.extra || {}; if (enumerable) { extra[key] = value; } else { Object.defineProperty(extra, key, { enumerable, value }); } } isContextual(token) { return this.state.type === token && !this.state.containsEsc; } isUnparsedContextual(nameStart, name) { const nameEnd = nameStart + name.length; if (this.input.slice(nameStart, nameEnd) === name) { const nextCh = this.input.charCodeAt(nameEnd); return !(isIdentifierChar(nextCh) || (nextCh & 0xfc00) === 0xd800); } return false; } isLookaheadContextual(name) { const next = this.nextTokenStart(); return this.isUnparsedContextual(next, name); } eatContextual(token) { if (this.isContextual(token)) { this.next(); return true; } return false; } expectContextual(token, template) { if (!this.eatContextual(token)) { if (template != null) { throw this.raise(template, { at: this.state.startLoc }); } throw this.unexpected(null, token); } } canInsertSemicolon() { return this.match(135) || this.match(8) || this.hasPrecedingLineBreak(); } hasPrecedingLineBreak() { return lineBreak.test(this.input.slice(this.state.lastTokEndLoc.index, this.state.start)); } hasFollowingLineBreak() { skipWhiteSpaceToLineBreak.lastIndex = this.state.end; return skipWhiteSpaceToLineBreak.test(this.input); } isLineTerminator() { return this.eat(13) || this.canInsertSemicolon(); } semicolon(allowAsi = true) { if (allowAsi ? this.isLineTerminator() : this.eat(13)) return; this.raise(ErrorMessages.MissingSemicolon, { at: this.state.lastTokEndLoc }); } expect(type, loc) { this.eat(type) || this.unexpected(loc, type); } assertNoSpace(message = "Unexpected space.") { if (this.state.start > this.state.lastTokEndLoc.index) { this.raise({ code: ErrorCodes.SyntaxError, reasonCode: "UnexpectedSpace", template: message }, { at: this.state.lastTokEndLoc }); } } unexpected(loc, type) { throw this.raise({ code: ErrorCodes.SyntaxError, reasonCode: "UnexpectedToken", template: type != null ? `Unexpected token, expected "${tokenLabelName(type)}"` : "Unexpected token" }, { at: loc != null ? loc : this.state.startLoc }); } getPluginNamesFromConfigs(pluginConfigs) { return pluginConfigs.map(c => { if (typeof c === "string") { return c; } else { return c[0]; } }); } expectPlugin(pluginConfig, loc) { if (!this.hasPlugin(pluginConfig)) { throw this.raiseWithData(loc != null ? loc : this.state.startLoc, { missingPlugin: this.getPluginNamesFromConfigs([pluginConfig]) }, `This experimental syntax requires enabling the parser plugin: ${JSON.stringify(pluginConfig)}.`); } return true; } expectOnePlugin(pluginConfigs) { if (!pluginConfigs.some(c => this.hasPlugin(c))) { throw this.raiseWithData(this.state.startLoc, { missingPlugin: this.getPluginNamesFromConfigs(pluginConfigs) }, `This experimental syntax requires enabling one of the following parser plugin(s): ${pluginConfigs.map(c => JSON.stringify(c)).join(", ")}.`); } } tryParse(fn, oldState = this.state.clone()) { const abortSignal = { node: null }; try { const node = fn((node = null) => { abortSignal.node = node; throw abortSignal; }); if (this.state.errors.length > oldState.errors.length) { const failState = this.state; this.state = oldState; this.state.tokensLength = failState.tokensLength; return { node, error: failState.errors[oldState.errors.length], thrown: false, aborted: false, failState }; } return { node, error: null, thrown: false, aborted: false, failState: null }; } catch (error) { const failState = this.state; this.state = oldState; if (error instanceof SyntaxError) { return { node: null, error, thrown: true, aborted: false, failState }; } if (error === abortSignal) { return { node: abortSignal.node, error: null, thrown: false, aborted: true, failState }; } throw error; } } checkExpressionErrors(refExpressionErrors, andThrow) { if (!refExpressionErrors) return false; const { shorthandAssignLoc, doubleProtoLoc, privateKeyLoc, optionalParametersLoc } = refExpressionErrors; const hasErrors = !!shorthandAssignLoc || !!doubleProtoLoc || !!optionalParametersLoc || !!privateKeyLoc; if (!andThrow) { return hasErrors; } if (shorthandAssignLoc != null) { this.raise(ErrorMessages.InvalidCoverInitializedName, { at: shorthandAssignLoc }); } if (doubleProtoLoc != null) { this.raise(ErrorMessages.DuplicateProto, { at: doubleProtoLoc }); } if (privateKeyLoc != null) { this.raise(ErrorMessages.UnexpectedPrivateField, { at: privateKeyLoc }); } if (optionalParametersLoc != null) { this.unexpected(optionalParametersLoc); } } isLiteralPropertyName() { return tokenIsLiteralPropertyName(this.state.type); } isPrivateName(node) { return node.type === "PrivateName"; } getPrivateNameSV(node) { return node.id.name; } hasPropertyAsPrivateName(node) { return (node.type === "MemberExpression" || node.type === "OptionalMemberExpression") && this.isPrivateName(node.property); } isOptionalChain(node) { return node.type === "OptionalMemberExpression" || node.type === "OptionalCallExpression"; } isObjectProperty(node) { return node.type === "ObjectProperty"; } isObjectMethod(node) { return node.type === "ObjectMethod"; } initializeScopes(inModule = this.options.sourceType === "module") { const oldLabels = this.state.labels; this.state.labels = []; const oldExportedIdentifiers = this.exportedIdentifiers; this.exportedIdentifiers = new Set(); const oldInModule = this.inModule; this.inModule = inModule; const oldScope = this.scope; const ScopeHandler = this.getScopeHandler(); this.scope = new ScopeHandler(this.raise.bind(this), this.inModule); const oldProdParam = this.prodParam; this.prodParam = new ProductionParameterHandler(); const oldClassScope = this.classScope; this.classScope = new ClassScopeHandler(this.raise.bind(this)); const oldExpressionScope = this.expressionScope; this.expressionScope = new ExpressionScopeHandler(this.raise.bind(this)); return () => { this.state.labels = oldLabels; this.exportedIdentifiers = oldExportedIdentifiers; this.inModule = oldInModule; this.scope = oldScope; this.prodParam = oldProdParam; this.classScope = oldClassScope; this.expressionScope = oldExpressionScope; }; } enterInitialScopes() { let paramFlags = PARAM; if (this.inModule) { paramFlags |= PARAM_AWAIT; } this.scope.enter(SCOPE_PROGRAM); this.prodParam.enter(paramFlags); } checkDestructuringPrivate(refExpressionErrors) { const { privateKeyLoc } = refExpressionErrors; if (privateKeyLoc !== null) { this.expectPlugin("destructuringPrivate", privateKeyLoc); } } } class ExpressionErrors { constructor() { this.shorthandAssignLoc = null; this.doubleProtoLoc = null; this.privateKeyLoc = null; this.optionalParametersLoc = null; } } class Node { constructor(parser, pos, loc) { this.type = ""; this.start = pos; this.end = 0; this.loc = new SourceLocation(loc); if (parser != null && parser.options.ranges) this.range = [pos, 0]; if (parser != null && parser.filename) this.loc.filename = parser.filename; } } const NodePrototype = Node.prototype; { NodePrototype.__clone = function () { const newNode = new Node(); const keys = Object.keys(this); for (let i = 0, length = keys.length; i < length; i++) { const key = keys[i]; if (key !== "leadingComments" && key !== "trailingComments" && key !== "innerComments") { newNode[key] = this[key]; } } return newNode; }; } function clonePlaceholder(node) { return cloneIdentifier(node); } function cloneIdentifier(node) { const { type, start, end, loc, range, extra, name } = node; const cloned = Object.create(NodePrototype); cloned.type = type; cloned.start = start; cloned.end = end; cloned.loc = loc; cloned.range = range; cloned.extra = extra; cloned.name = name; if (type === "Placeholder") { cloned.expectedNode = node.expectedNode; } return cloned; } function cloneStringLiteral(node) { const { type, start, end, loc, range, extra } = node; if (type === "Placeholder") { return clonePlaceholder(node); } const cloned = Object.create(NodePrototype); cloned.type = type; cloned.start = start; cloned.end = end; cloned.loc = loc; cloned.range = range; if (node.raw !== undefined) { cloned.raw = node.raw; } else { cloned.extra = extra; } cloned.value = node.value; return cloned; } class NodeUtils extends UtilParser { startNode() { return new Node(this, this.state.start, this.state.startLoc); } startNodeAt(pos, loc) { return new Node(this, pos, loc); } startNodeAtNode(type) { return this.startNodeAt(type.start, type.loc.start); } finishNode(node, type) { return this.finishNodeAt(node, type, this.state.lastTokEndLoc); } finishNodeAt(node, type, endLoc) { node.type = type; node.end = endLoc.index; node.loc.end = endLoc; if (this.options.ranges) node.range[1] = endLoc.index; if (this.options.attachComment) this.processComment(node); return node; } resetStartLocation(node, start, startLoc) { node.start = start; node.loc.start = startLoc; if (this.options.ranges) node.range[0] = start; } resetEndLocation(node, endLoc = this.state.lastTokEndLoc) { node.end = endLoc.index; node.loc.end = endLoc; if (this.options.ranges) node.range[1] = endLoc.index; } resetStartLocationFromNode(node, locationNode) { this.resetStartLocation(node, locationNode.start, locationNode.loc.start); } } const reservedTypes = new Set(["_", "any", "bool", "boolean", "empty", "extends", "false", "interface", "mixed", "null", "number", "static", "string", "true", "typeof", "void"]); const FlowErrors = makeErrorTemplates({ AmbiguousConditionalArrow: "Ambiguous expression: wrap the arrow functions in parentheses to disambiguate.", AmbiguousDeclareModuleKind: "Found both `declare module.exports` and `declare export` in the same module. Modules can only have 1 since they are either an ES module or they are a CommonJS module.", AssignReservedType: "Cannot overwrite reserved type %0.", DeclareClassElement: "The `declare` modifier can only appear on class fields.", DeclareClassFieldInitializer: "Initializers are not allowed in fields with the `declare` modifier.", DuplicateDeclareModuleExports: "Duplicate `declare module.exports` statement.", EnumBooleanMemberNotInitialized: "Boolean enum members need to be initialized. Use either `%0 = true,` or `%0 = false,` in enum `%1`.", EnumDuplicateMemberName: "Enum member names need to be unique, but the name `%0` has already been used before in enum `%1`.", EnumInconsistentMemberValues: "Enum `%0` has inconsistent member initializers. Either use no initializers, or consistently use literals (either booleans, numbers, or strings) for all member initializers.", EnumInvalidExplicitType: "Enum type `%1` is not valid. Use one of `boolean`, `number`, `string`, or `symbol` in enum `%0`.", EnumInvalidExplicitTypeUnknownSupplied: "Supplied enum type is not valid. Use one of `boolean`, `number`, `string`, or `symbol` in enum `%0`.", EnumInvalidMemberInitializerPrimaryType: "Enum `%0` has type `%2`, so the initializer of `%1` needs to be a %2 literal.", EnumInvalidMemberInitializerSymbolType: "Symbol enum members cannot be initialized. Use `%1,` in enum `%0`.", EnumInvalidMemberInitializerUnknownType: "The enum member initializer for `%1` needs to be a literal (either a boolean, number, or string) in enum `%0`.", EnumInvalidMemberName: "Enum member names cannot start with lowercase 'a' through 'z'. Instead of using `%0`, consider using `%1`, in enum `%2`.", EnumNumberMemberNotInitialized: "Number enum members need to be initialized, e.g. `%1 = 1` in enum `%0`.", EnumStringMemberInconsistentlyInitailized: "String enum members need to consistently either all use initializers, or use no initializers, in enum `%0`.", GetterMayNotHaveThisParam: "A getter cannot have a `this` parameter.", ImportTypeShorthandOnlyInPureImport: "The `type` and `typeof` keywords on named imports can only be used on regular `import` statements. It cannot be used with `import type` or `import typeof` statements.", InexactInsideExact: "Explicit inexact syntax cannot appear inside an explicit exact object type.", InexactInsideNonObject: "Explicit inexact syntax cannot appear in class or interface definitions.", InexactVariance: "Explicit inexact syntax cannot have variance.", InvalidNonTypeImportInDeclareModule: "Imports within a `declare module` body must always be `import type` or `import typeof`.", MissingTypeParamDefault: "Type parameter declaration needs a default, since a preceding type parameter declaration has a default.", NestedDeclareModule: "`declare module` cannot be used inside another `declare module`.", NestedFlowComment: "Cannot have a flow comment inside another flow comment.", PatternIsOptional: "A binding pattern parameter cannot be optional in an implementation signature.", SetterMayNotHaveThisParam: "A setter cannot have a `this` parameter.", SpreadVariance: "Spread properties cannot have variance.", ThisParamAnnotationRequired: "A type annotation is required for the `this` parameter.", ThisParamBannedInConstructor: "Constructors cannot have a `this` parameter; constructors don't bind `this` like other functions.", ThisParamMayNotBeOptional: "The `this` parameter cannot be optional.", ThisParamMustBeFirst: "The `this` parameter must be the first function parameter.", ThisParamNoDefault: "The `this` parameter may not have a default value.", TypeBeforeInitializer: "Type annotations must come before default assignments, e.g. instead of `age = 25: number` use `age: number = 25`.", TypeCastInPattern: "The type cast expression is expected to be wrapped with parenthesis.", UnexpectedExplicitInexactInObject: "Explicit inexact syntax must appear at the end of an inexact object.", UnexpectedReservedType: "Unexpected reserved type %0.", UnexpectedReservedUnderscore: "`_` is only allowed as a type argument to call or new.", UnexpectedSpaceBetweenModuloChecks: "Spaces between `%` and `checks` are not allowed here.", UnexpectedSpreadType: "Spread operator cannot appear in class or interface definitions.", UnexpectedSubtractionOperand: 'Unexpected token, expected "number" or "bigint".', UnexpectedTokenAfterTypeParameter: "Expected an arrow function after this type parameter declaration.", UnexpectedTypeParameterBeforeAsyncArrowFunction: "Type parameters must come after the async keyword, e.g. instead of ` async () => {}`, use `async () => {}`.", UnsupportedDeclareExportKind: "`declare export %0` is not supported. Use `%1` instead.", UnsupportedStatementInDeclareModule: "Only declares and type imports are allowed inside declare module.", UnterminatedFlowComment: "Unterminated flow-comment." }, ErrorCodes.SyntaxError, "flow"); function isEsModuleType(bodyElement) { return bodyElement.type === "DeclareExportAllDeclaration" || bodyElement.type === "DeclareExportDeclaration" && (!bodyElement.declaration || bodyElement.declaration.type !== "TypeAlias" && bodyElement.declaration.type !== "InterfaceDeclaration"); } function hasTypeImportKind(node) { return node.importKind === "type" || node.importKind === "typeof"; } function isMaybeDefaultImport(type) { return tokenIsKeywordOrIdentifier(type) && type !== 97; } const exportSuggestions = { const: "declare export var", let: "declare export var", type: "export type", interface: "export interface" }; function partition(list, test) { const list1 = []; const list2 = []; for (let i = 0; i < list.length; i++) { (test(list[i], i, list) ? list1 : list2).push(list[i]); } return [list1, list2]; } const FLOW_PRAGMA_REGEX = /\*?\s*@((?:no)?flow)\b/; var flow = (superClass => class extends superClass { constructor(...args) { super(...args); this.flowPragma = undefined; } getScopeHandler() { return FlowScopeHandler; } shouldParseTypes() { return this.getPluginOption("flow", "all") || this.flowPragma === "flow"; } shouldParseEnums() { return !!this.getPluginOption("flow", "enums"); } finishToken(type, val) { if (type !== 129 && type !== 13 && type !== 28) { if (this.flowPragma === undefined) { this.flowPragma = null; } } return super.finishToken(type, val); } addComment(comment) { if (this.flowPragma === undefined) { const matches = FLOW_PRAGMA_REGEX.exec(comment.value); if (!matches) ; else if (matches[1] === "flow") { this.flowPragma = "flow"; } else if (matches[1] === "noflow") { this.flowPragma = "noflow"; } else { throw new Error("Unexpected flow pragma"); } } return super.addComment(comment); } flowParseTypeInitialiser(tok) { const oldInType = this.state.inType; this.state.inType = true; this.expect(tok || 14); const type = this.flowParseType(); this.state.inType = oldInType; return type; } flowParsePredicate() { const node = this.startNode(); const moduloLoc = this.state.startLoc; this.next(); this.expectContextual(107); if (this.state.lastTokStart > moduloLoc.index + 1) { this.raise(FlowErrors.UnexpectedSpaceBetweenModuloChecks, { at: moduloLoc }); } if (this.eat(10)) { node.value = this.parseExpression(); this.expect(11); return this.finishNode(node, "DeclaredPredicate"); } else { return this.finishNode(node, "InferredPredicate"); } } flowParseTypeAndPredicateInitialiser() { const oldInType = this.state.inType; this.state.inType = true; this.expect(14); let type = null; let predicate = null; if (this.match(54)) { this.state.inType = oldInType; predicate = this.flowParsePredicate(); } else { type = this.flowParseType(); this.state.inType = oldInType; if (this.match(54)) { predicate = this.flowParsePredicate(); } } return [type, predicate]; } flowParseDeclareClass(node) { this.next(); this.flowParseInterfaceish(node, true); return this.finishNode(node, "DeclareClass"); } flowParseDeclareFunction(node) { this.next(); const id = node.id = this.parseIdentifier(); const typeNode = this.startNode(); const typeContainer = this.startNode(); if (this.match(47)) { typeNode.typeParameters = this.flowParseTypeParameterDeclaration(); } else { typeNode.typeParameters = null; } this.expect(10); const tmp = this.flowParseFunctionTypeParams(); typeNode.params = tmp.params; typeNode.rest = tmp.rest; typeNode.this = tmp._this; this.expect(11); [typeNode.returnType, node.predicate] = this.flowParseTypeAndPredicateInitialiser(); typeContainer.typeAnnotation = this.finishNode(typeNode, "FunctionTypeAnnotation"); id.typeAnnotation = this.finishNode(typeContainer, "TypeAnnotation"); this.resetEndLocation(id); this.semicolon(); this.scope.declareName(node.id.name, BIND_FLOW_DECLARE_FN, node.id.loc.start); return this.finishNode(node, "DeclareFunction"); } flowParseDeclare(node, insideModule) { if (this.match(80)) { return this.flowParseDeclareClass(node); } else if (this.match(68)) { return this.flowParseDeclareFunction(node); } else if (this.match(74)) { return this.flowParseDeclareVariable(node); } else if (this.eatContextual(123)) { if (this.match(16)) { return this.flowParseDeclareModuleExports(node); } else { if (insideModule) { this.raise(FlowErrors.NestedDeclareModule, { at: this.state.lastTokStartLoc }); } return this.flowParseDeclareModule(node); } } else if (this.isContextual(126)) { return this.flowParseDeclareTypeAlias(node); } else if (this.isContextual(127)) { return this.flowParseDeclareOpaqueType(node); } else if (this.isContextual(125)) { return this.flowParseDeclareInterface(node); } else if (this.match(82)) { return this.flowParseDeclareExportDeclaration(node, insideModule); } else { throw this.unexpected(); } } flowParseDeclareVariable(node) { this.next(); node.id = this.flowParseTypeAnnotatableIdentifier(true); this.scope.declareName(node.id.name, BIND_VAR, node.id.loc.start); this.semicolon(); return this.finishNode(node, "DeclareVariable"); } flowParseDeclareModule(node) { this.scope.enter(SCOPE_OTHER); if (this.match(129)) { node.id = this.parseExprAtom(); } else { node.id = this.parseIdentifier(); } const bodyNode = node.body = this.startNode(); const body = bodyNode.body = []; this.expect(5); while (!this.match(8)) { let bodyNode = this.startNode(); if (this.match(83)) { this.next(); if (!this.isContextual(126) && !this.match(87)) { this.raise(FlowErrors.InvalidNonTypeImportInDeclareModule, { at: this.state.lastTokStartLoc }); } this.parseImport(bodyNode); } else { this.expectContextual(121, FlowErrors.UnsupportedStatementInDeclareModule); bodyNode = this.flowParseDeclare(bodyNode, true); } body.push(bodyNode); } this.scope.exit(); this.expect(8); this.finishNode(bodyNode, "BlockStatement"); let kind = null; let hasModuleExport = false; body.forEach(bodyElement => { if (isEsModuleType(bodyElement)) { if (kind === "CommonJS") { this.raise(FlowErrors.AmbiguousDeclareModuleKind, { node: bodyElement }); } kind = "ES"; } else if (bodyElement.type === "DeclareModuleExports") { if (hasModuleExport) { this.raise(FlowErrors.DuplicateDeclareModuleExports, { node: bodyElement }); } if (kind === "ES") { this.raise(FlowErrors.AmbiguousDeclareModuleKind, { node: bodyElement }); } kind = "CommonJS"; hasModuleExport = true; } }); node.kind = kind || "CommonJS"; return this.finishNode(node, "DeclareModule"); } flowParseDeclareExportDeclaration(node, insideModule) { this.expect(82); if (this.eat(65)) { if (this.match(68) || this.match(80)) { node.declaration = this.flowParseDeclare(this.startNode()); } else { node.declaration = this.flowParseType(); this.semicolon(); } node.default = true; return this.finishNode(node, "DeclareExportDeclaration"); } else { if (this.match(75) || this.isLet() || (this.isContextual(126) || this.isContextual(125)) && !insideModule) { const label = this.state.value; const suggestion = exportSuggestions[label]; throw this.raise(FlowErrors.UnsupportedDeclareExportKind, { at: this.state.startLoc }, label, suggestion); } if (this.match(74) || this.match(68) || this.match(80) || this.isContextual(127)) { node.declaration = this.flowParseDeclare(this.startNode()); node.default = false; return this.finishNode(node, "DeclareExportDeclaration"); } else if (this.match(55) || this.match(5) || this.isContextual(125) || this.isContextual(126) || this.isContextual(127)) { node = this.parseExport(node); if (node.type === "ExportNamedDeclaration") { node.type = "ExportDeclaration"; node.default = false; delete node.exportKind; } node.type = "Declare" + node.type; return node; } } throw this.unexpected(); } flowParseDeclareModuleExports(node) { this.next(); this.expectContextual(108); node.typeAnnotation = this.flowParseTypeAnnotation(); this.semicolon(); return this.finishNode(node, "DeclareModuleExports"); } flowParseDeclareTypeAlias(node) { this.next(); this.flowParseTypeAlias(node); node.type = "DeclareTypeAlias"; return node; } flowParseDeclareOpaqueType(node) { this.next(); this.flowParseOpaqueType(node, true); node.type = "DeclareOpaqueType"; return node; } flowParseDeclareInterface(node) { this.next(); this.flowParseInterfaceish(node); return this.finishNode(node, "DeclareInterface"); } flowParseInterfaceish(node, isClass = false) { node.id = this.flowParseRestrictedIdentifier(!isClass, true); this.scope.declareName(node.id.name, isClass ? BIND_FUNCTION : BIND_LEXICAL, node.id.loc.start); if (this.match(47)) { node.typeParameters = this.flowParseTypeParameterDeclaration(); } else { node.typeParameters = null; } node.extends = []; node.implements = []; node.mixins = []; if (this.eat(81)) { do { node.extends.push(this.flowParseInterfaceExtends()); } while (!isClass && this.eat(12)); } if (this.isContextual(114)) { this.next(); do { node.mixins.push(this.flowParseInterfaceExtends()); } while (this.eat(12)); } if (this.isContextual(110)) { this.next(); do { node.implements.push(this.flowParseInterfaceExtends()); } while (this.eat(12)); } node.body = this.flowParseObjectType({ allowStatic: isClass, allowExact: false, allowSpread: false, allowProto: isClass, allowInexact: false }); } flowParseInterfaceExtends() { const node = this.startNode(); node.id = this.flowParseQualifiedTypeIdentifier(); if (this.match(47)) { node.typeParameters = this.flowParseTypeParameterInstantiation(); } else { node.typeParameters = null; } return this.finishNode(node, "InterfaceExtends"); } flowParseInterface(node) { this.flowParseInterfaceish(node); return this.finishNode(node, "InterfaceDeclaration"); } checkNotUnderscore(word) { if (word === "_") { this.raise(FlowErrors.UnexpectedReservedUnderscore, { at: this.state.startLoc }); } } checkReservedType(word, startLoc, declaration) { if (!reservedTypes.has(word)) return; this.raise(declaration ? FlowErrors.AssignReservedType : FlowErrors.UnexpectedReservedType, { at: startLoc }, word); } flowParseRestrictedIdentifier(liberal, declaration) { this.checkReservedType(this.state.value, this.state.startLoc, declaration); return this.parseIdentifier(liberal); } flowParseTypeAlias(node) { node.id = this.flowParseRestrictedIdentifier(false, true); this.scope.declareName(node.id.name, BIND_LEXICAL, node.id.loc.start); if (this.match(47)) { node.typeParameters = this.flowParseTypeParameterDeclaration(); } else { node.typeParameters = null; } node.right = this.flowParseTypeInitialiser(29); this.semicolon(); return this.finishNode(node, "TypeAlias"); } flowParseOpaqueType(node, declare) { this.expectContextual(126); node.id = this.flowParseRestrictedIdentifier(true, true); this.scope.declareName(node.id.name, BIND_LEXICAL, node.id.loc.start); if (this.match(47)) { node.typeParameters = this.flowParseTypeParameterDeclaration(); } else { node.typeParameters = null; } node.supertype = null; if (this.match(14)) { node.supertype = this.flowParseTypeInitialiser(14); } node.impltype = null; if (!declare) { node.impltype = this.flowParseTypeInitialiser(29); } this.semicolon(); return this.finishNode(node, "OpaqueType"); } flowParseTypeParameter(requireDefault = false) { const nodeStartLoc = this.state.startLoc; const node = this.startNode(); const variance = this.flowParseVariance(); const ident = this.flowParseTypeAnnotatableIdentifier(); node.name = ident.name; node.variance = variance; node.bound = ident.typeAnnotation; if (this.match(29)) { this.eat(29); node.default = this.flowParseType(); } else { if (requireDefault) { this.raise(FlowErrors.MissingTypeParamDefault, { at: nodeStartLoc }); } } return this.finishNode(node, "TypeParameter"); } flowParseTypeParameterDeclaration() { const oldInType = this.state.inType; const node = this.startNode(); node.params = []; this.state.inType = true; if (this.match(47) || this.match(138)) { this.next(); } else { this.unexpected(); } let defaultRequired = false; do { const typeParameter = this.flowParseTypeParameter(defaultRequired); node.params.push(typeParameter); if (typeParameter.default) { defaultRequired = true; } if (!this.match(48)) { this.expect(12); } } while (!this.match(48)); this.expect(48); this.state.inType = oldInType; return this.finishNode(node, "TypeParameterDeclaration"); } flowParseTypeParameterInstantiation() { const node = this.startNode(); const oldInType = this.state.inType; node.params = []; this.state.inType = true; this.expect(47); const oldNoAnonFunctionType = this.state.noAnonFunctionType; this.state.noAnonFunctionType = false; while (!this.match(48)) { node.params.push(this.flowParseType()); if (!this.match(48)) { this.expect(12); } } this.state.noAnonFunctionType = oldNoAnonFunctionType; this.expect(48); this.state.inType = oldInType; return this.finishNode(node, "TypeParameterInstantiation"); } flowParseTypeParameterInstantiationCallOrNew() { const node = this.startNode(); const oldInType = this.state.inType; node.params = []; this.state.inType = true; this.expect(47); while (!this.match(48)) { node.params.push(this.flowParseTypeOrImplicitInstantiation()); if (!this.match(48)) { this.expect(12); } } this.expect(48); this.state.inType = oldInType; return this.finishNode(node, "TypeParameterInstantiation"); } flowParseInterfaceType() { const node = this.startNode(); this.expectContextual(125); node.extends = []; if (this.eat(81)) { do { node.extends.push(this.flowParseInterfaceExtends()); } while (this.eat(12)); } node.body = this.flowParseObjectType({ allowStatic: false, allowExact: false, allowSpread: false, allowProto: false, allowInexact: false }); return this.finishNode(node, "InterfaceTypeAnnotation"); } flowParseObjectPropertyKey() { return this.match(130) || this.match(129) ? this.parseExprAtom() : this.parseIdentifier(true); } flowParseObjectTypeIndexer(node, isStatic, variance) { node.static = isStatic; if (this.lookahead().type === 14) { node.id = this.flowParseObjectPropertyKey(); node.key = this.flowParseTypeInitialiser(); } else { node.id = null; node.key = this.flowParseType(); } this.expect(3); node.value = this.flowParseTypeInitialiser(); node.variance = variance; return this.finishNode(node, "ObjectTypeIndexer"); } flowParseObjectTypeInternalSlot(node, isStatic) { node.static = isStatic; node.id = this.flowParseObjectPropertyKey(); this.expect(3); this.expect(3); if (this.match(47) || this.match(10)) { node.method = true; node.optional = false; node.value = this.flowParseObjectTypeMethodish(this.startNodeAt(node.start, node.loc.start)); } else { node.method = false; if (this.eat(17)) { node.optional = true; } node.value = this.flowParseTypeInitialiser(); } return this.finishNode(node, "ObjectTypeInternalSlot"); } flowParseObjectTypeMethodish(node) { node.params = []; node.rest = null; node.typeParameters = null; node.this = null; if (this.match(47)) { node.typeParameters = this.flowParseTypeParameterDeclaration(); } this.expect(10); if (this.match(78)) { node.this = this.flowParseFunctionTypeParam(true); node.this.name = null; if (!this.match(11)) { this.expect(12); } } while (!this.match(11) && !this.match(21)) { node.params.push(this.flowParseFunctionTypeParam(false)); if (!this.match(11)) { this.expect(12); } } if (this.eat(21)) { node.rest = this.flowParseFunctionTypeParam(false); } this.expect(11); node.returnType = this.flowParseTypeInitialiser(); return this.finishNode(node, "FunctionTypeAnnotation"); } flowParseObjectTypeCallProperty(node, isStatic) { const valueNode = this.startNode(); node.static = isStatic; node.value = this.flowParseObjectTypeMethodish(valueNode); return this.finishNode(node, "ObjectTypeCallProperty"); } flowParseObjectType({ allowStatic, allowExact, allowSpread, allowProto, allowInexact }) { const oldInType = this.state.inType; this.state.inType = true; const nodeStart = this.startNode(); nodeStart.callProperties = []; nodeStart.properties = []; nodeStart.indexers = []; nodeStart.internalSlots = []; let endDelim; let exact; let inexact = false; if (allowExact && this.match(6)) { this.expect(6); endDelim = 9; exact = true; } else { this.expect(5); endDelim = 8; exact = false; } nodeStart.exact = exact; while (!this.match(endDelim)) { let isStatic = false; let protoStartLoc = null; let inexactStartLoc = null; const node = this.startNode(); if (allowProto && this.isContextual(115)) { const lookahead = this.lookahead(); if (lookahead.type !== 14 && lookahead.type !== 17) { this.next(); protoStartLoc = this.state.startLoc; allowStatic = false; } } if (allowStatic && this.isContextual(104)) { const lookahead = this.lookahead(); if (lookahead.type !== 14 && lookahead.type !== 17) { this.next(); isStatic = true; } } const variance = this.flowParseVariance(); if (this.eat(0)) { if (protoStartLoc != null) { this.unexpected(protoStartLoc); } if (this.eat(0)) { if (variance) { this.unexpected(variance.loc.start); } nodeStart.internalSlots.push(this.flowParseObjectTypeInternalSlot(node, isStatic)); } else { nodeStart.indexers.push(this.flowParseObjectTypeIndexer(node, isStatic, variance)); } } else if (this.match(10) || this.match(47)) { if (protoStartLoc != null) { this.unexpected(protoStartLoc); } if (variance) { this.unexpected(variance.loc.start); } nodeStart.callProperties.push(this.flowParseObjectTypeCallProperty(node, isStatic)); } else { let kind = "init"; if (this.isContextual(98) || this.isContextual(103)) { const lookahead = this.lookahead(); if (tokenIsLiteralPropertyName(lookahead.type)) { kind = this.state.value; this.next(); } } const propOrInexact = this.flowParseObjectTypeProperty(node, isStatic, protoStartLoc, variance, kind, allowSpread, allowInexact != null ? allowInexact : !exact); if (propOrInexact === null) { inexact = true; inexactStartLoc = this.state.lastTokStartLoc; } else { nodeStart.properties.push(propOrInexact); } } this.flowObjectTypeSemicolon(); if (inexactStartLoc && !this.match(8) && !this.match(9)) { this.raise(FlowErrors.UnexpectedExplicitInexactInObject, { at: inexactStartLoc }); } } this.expect(endDelim); if (allowSpread) { nodeStart.inexact = inexact; } const out = this.finishNode(nodeStart, "ObjectTypeAnnotation"); this.state.inType = oldInType; return out; } flowParseObjectTypeProperty(node, isStatic, protoStartLoc, variance, kind, allowSpread, allowInexact) { if (this.eat(21)) { const isInexactToken = this.match(12) || this.match(13) || this.match(8) || this.match(9); if (isInexactToken) { if (!allowSpread) { this.raise(FlowErrors.InexactInsideNonObject, { at: this.state.lastTokStartLoc }); } else if (!allowInexact) { this.raise(FlowErrors.InexactInsideExact, { at: this.state.lastTokStartLoc }); } if (variance) { this.raise(FlowErrors.InexactVariance, { node: variance }); } return null; } if (!allowSpread) { this.raise(FlowErrors.UnexpectedSpreadType, { at: this.state.lastTokStartLoc }); } if (protoStartLoc != null) { this.unexpected(protoStartLoc); } if (variance) { this.raise(FlowErrors.SpreadVariance, { node: variance }); } node.argument = this.flowParseType(); return this.finishNode(node, "ObjectTypeSpreadProperty"); } else { node.key = this.flowParseObjectPropertyKey(); node.static = isStatic; node.proto = protoStartLoc != null; node.kind = kind; let optional = false; if (this.match(47) || this.match(10)) { node.method = true; if (protoStartLoc != null) { this.unexpected(protoStartLoc); } if (variance) { this.unexpected(variance.loc.start); } node.value = this.flowParseObjectTypeMethodish(this.startNodeAt(node.start, node.loc.start)); if (kind === "get" || kind === "set") { this.flowCheckGetterSetterParams(node); } if (!allowSpread && node.key.name === "constructor" && node.value.this) { this.raise(FlowErrors.ThisParamBannedInConstructor, { node: node.value.this }); } } else { if (kind !== "init") this.unexpected(); node.method = false; if (this.eat(17)) { optional = true; } node.value = this.flowParseTypeInitialiser(); node.variance = variance; } node.optional = optional; return this.finishNode(node, "ObjectTypeProperty"); } } flowCheckGetterSetterParams(property) { const paramCount = property.kind === "get" ? 0 : 1; const length = property.value.params.length + (property.value.rest ? 1 : 0); if (property.value.this) { this.raise(property.kind === "get" ? FlowErrors.GetterMayNotHaveThisParam : FlowErrors.SetterMayNotHaveThisParam, { node: property.value.this }); } if (length !== paramCount) { this.raise(property.kind === "get" ? ErrorMessages.BadGetterArity : ErrorMessages.BadSetterArity, { node: property }); } if (property.kind === "set" && property.value.rest) { this.raise(ErrorMessages.BadSetterRestParameter, { node: property }); } } flowObjectTypeSemicolon() { if (!this.eat(13) && !this.eat(12) && !this.match(8) && !this.match(9)) { this.unexpected(); } } flowParseQualifiedTypeIdentifier(startPos, startLoc, id) { startPos = startPos || this.state.start; startLoc = startLoc || this.state.startLoc; let node = id || this.flowParseRestrictedIdentifier(true); while (this.eat(16)) { const node2 = this.startNodeAt(startPos, startLoc); node2.qualification = node; node2.id = this.flowParseRestrictedIdentifier(true); node = this.finishNode(node2, "QualifiedTypeIdentifier"); } return node; } flowParseGenericType(startPos, startLoc, id) { const node = this.startNodeAt(startPos, startLoc); node.typeParameters = null; node.id = this.flowParseQualifiedTypeIdentifier(startPos, startLoc, id); if (this.match(47)) { node.typeParameters = this.flowParseTypeParameterInstantiation(); } return this.finishNode(node, "GenericTypeAnnotation"); } flowParseTypeofType() { const node = this.startNode(); this.expect(87); node.argument = this.flowParsePrimaryType(); return this.finishNode(node, "TypeofTypeAnnotation"); } flowParseTupleType() { const node = this.startNode(); node.types = []; this.expect(0); while (this.state.pos < this.length && !this.match(3)) { node.types.push(this.flowParseType()); if (this.match(3)) break; this.expect(12); } this.expect(3); return this.finishNode(node, "TupleTypeAnnotation"); } flowParseFunctionTypeParam(first) { let name = null; let optional = false; let typeAnnotation = null; const node = this.startNode(); const lh = this.lookahead(); const isThis = this.state.type === 78; if (lh.type === 14 || lh.type === 17) { if (isThis && !first) { this.raise(FlowErrors.ThisParamMustBeFirst, { node }); } name = this.parseIdentifier(isThis); if (this.eat(17)) { optional = true; if (isThis) { this.raise(FlowErrors.ThisParamMayNotBeOptional, { node }); } } typeAnnotation = this.flowParseTypeInitialiser(); } else { typeAnnotation = this.flowParseType(); } node.name = name; node.optional = optional; node.typeAnnotation = typeAnnotation; return this.finishNode(node, "FunctionTypeParam"); } reinterpretTypeAsFunctionTypeParam(type) { const node = this.startNodeAt(type.start, type.loc.start); node.name = null; node.optional = false; node.typeAnnotation = type; return this.finishNode(node, "FunctionTypeParam"); } flowParseFunctionTypeParams(params = []) { let rest = null; let _this = null; if (this.match(78)) { _this = this.flowParseFunctionTypeParam(true); _this.name = null; if (!this.match(11)) { this.expect(12); } } while (!this.match(11) && !this.match(21)) { params.push(this.flowParseFunctionTypeParam(false)); if (!this.match(11)) { this.expect(12); } } if (this.eat(21)) { rest = this.flowParseFunctionTypeParam(false); } return { params, rest, _this }; } flowIdentToTypeAnnotation(startPos, startLoc, node, id) { switch (id.name) { case "any": return this.finishNode(node, "AnyTypeAnnotation"); case "bool": case "boolean": return this.finishNode(node, "BooleanTypeAnnotation"); case "mixed": return this.finishNode(node, "MixedTypeAnnotation"); case "empty": return this.finishNode(node, "EmptyTypeAnnotation"); case "number": return this.finishNode(node, "NumberTypeAnnotation"); case "string": return this.finishNode(node, "StringTypeAnnotation"); case "symbol": return this.finishNode(node, "SymbolTypeAnnotation"); default: this.checkNotUnderscore(id.name); return this.flowParseGenericType(startPos, startLoc, id); } } flowParsePrimaryType() { const startPos = this.state.start; const startLoc = this.state.startLoc; const node = this.startNode(); let tmp; let type; let isGroupedType = false; const oldNoAnonFunctionType = this.state.noAnonFunctionType; switch (this.state.type) { case 5: return this.flowParseObjectType({ allowStatic: false, allowExact: false, allowSpread: true, allowProto: false, allowInexact: true }); case 6: return this.flowParseObjectType({ allowStatic: false, allowExact: true, allowSpread: true, allowProto: false, allowInexact: false }); case 0: this.state.noAnonFunctionType = false; type = this.flowParseTupleType(); this.state.noAnonFunctionType = oldNoAnonFunctionType; return type; case 47: node.typeParameters = this.flowParseTypeParameterDeclaration(); this.expect(10); tmp = this.flowParseFunctionTypeParams(); node.params = tmp.params; node.rest = tmp.rest; node.this = tmp._this; this.expect(11); this.expect(19); node.returnType = this.flowParseType(); return this.finishNode(node, "FunctionTypeAnnotation"); case 10: this.next(); if (!this.match(11) && !this.match(21)) { if (tokenIsIdentifier(this.state.type) || this.match(78)) { const token = this.lookahead().type; isGroupedType = token !== 17 && token !== 14; } else { isGroupedType = true; } } if (isGroupedType) { this.state.noAnonFunctionType = false; type = this.flowParseType(); this.state.noAnonFunctionType = oldNoAnonFunctionType; if (this.state.noAnonFunctionType || !(this.match(12) || this.match(11) && this.lookahead().type === 19)) { this.expect(11); return type; } else { this.eat(12); } } if (type) { tmp = this.flowParseFunctionTypeParams([this.reinterpretTypeAsFunctionTypeParam(type)]); } else { tmp = this.flowParseFunctionTypeParams(); } node.params = tmp.params; node.rest = tmp.rest; node.this = tmp._this; this.expect(11); this.expect(19); node.returnType = this.flowParseType(); node.typeParameters = null; return this.finishNode(node, "FunctionTypeAnnotation"); case 129: return this.parseLiteral(this.state.value, "StringLiteralTypeAnnotation"); case 85: case 86: node.value = this.match(85); this.next(); return this.finishNode(node, "BooleanLiteralTypeAnnotation"); case 53: if (this.state.value === "-") { this.next(); if (this.match(130)) { return this.parseLiteralAtNode(-this.state.value, "NumberLiteralTypeAnnotation", node); } if (this.match(131)) { return this.parseLiteralAtNode(-this.state.value, "BigIntLiteralTypeAnnotation", node); } throw this.raise(FlowErrors.UnexpectedSubtractionOperand, { at: this.state.startLoc }); } throw this.unexpected(); case 130: return this.parseLiteral(this.state.value, "NumberLiteralTypeAnnotation"); case 131: return this.parseLiteral(this.state.value, "BigIntLiteralTypeAnnotation"); case 88: this.next(); return this.finishNode(node, "VoidTypeAnnotation"); case 84: this.next(); return this.finishNode(node, "NullLiteralTypeAnnotation"); case 78: this.next(); return this.finishNode(node, "ThisTypeAnnotation"); case 55: this.next(); return this.finishNode(node, "ExistsTypeAnnotation"); case 87: return this.flowParseTypeofType(); default: if (tokenIsKeyword(this.state.type)) { const label = tokenLabelName(this.state.type); this.next(); return super.createIdentifier(node, label); } else if (tokenIsIdentifier(this.state.type)) { if (this.isContextual(125)) { return this.flowParseInterfaceType(); } return this.flowIdentToTypeAnnotation(startPos, startLoc, node, this.parseIdentifier()); } } throw this.unexpected(); } flowParsePostfixType() { const startPos = this.state.start; const startLoc = this.state.startLoc; let type = this.flowParsePrimaryType(); let seenOptionalIndexedAccess = false; while ((this.match(0) || this.match(18)) && !this.canInsertSemicolon()) { const node = this.startNodeAt(startPos, startLoc); const optional = this.eat(18); seenOptionalIndexedAccess = seenOptionalIndexedAccess || optional; this.expect(0); if (!optional && this.match(3)) { node.elementType = type; this.next(); type = this.finishNode(node, "ArrayTypeAnnotation"); } else { node.objectType = type; node.indexType = this.flowParseType(); this.expect(3); if (seenOptionalIndexedAccess) { node.optional = optional; type = this.finishNode(node, "OptionalIndexedAccessType"); } else { type = this.finishNode(node, "IndexedAccessType"); } } } return type; } flowParsePrefixType() { const node = this.startNode(); if (this.eat(17)) { node.typeAnnotation = this.flowParsePrefixType(); return this.finishNode(node, "NullableTypeAnnotation"); } else { return this.flowParsePostfixType(); } } flowParseAnonFunctionWithoutParens() { const param = this.flowParsePrefixType(); if (!this.state.noAnonFunctionType && this.eat(19)) { const node = this.startNodeAt(param.start, param.loc.start); node.params = [this.reinterpretTypeAsFunctionTypeParam(param)]; node.rest = null; node.this = null; node.returnType = this.flowParseType(); node.typeParameters = null; return this.finishNode(node, "FunctionTypeAnnotation"); } return param; } flowParseIntersectionType() { const node = this.startNode(); this.eat(45); const type = this.flowParseAnonFunctionWithoutParens(); node.types = [type]; while (this.eat(45)) { node.types.push(this.flowParseAnonFunctionWithoutParens()); } return node.types.length === 1 ? type : this.finishNode(node, "IntersectionTypeAnnotation"); } flowParseUnionType() { const node = this.startNode(); this.eat(43); const type = this.flowParseIntersectionType(); node.types = [type]; while (this.eat(43)) { node.types.push(this.flowParseIntersectionType()); } return node.types.length === 1 ? type : this.finishNode(node, "UnionTypeAnnotation"); } flowParseType() { const oldInType = this.state.inType; this.state.inType = true; const type = this.flowParseUnionType(); this.state.inType = oldInType; return type; } flowParseTypeOrImplicitInstantiation() { if (this.state.type === 128 && this.state.value === "_") { const startPos = this.state.start; const startLoc = this.state.startLoc; const node = this.parseIdentifier(); return this.flowParseGenericType(startPos, startLoc, node); } else { return this.flowParseType(); } } flowParseTypeAnnotation() { const node = this.startNode(); node.typeAnnotation = this.flowParseTypeInitialiser(); return this.finishNode(node, "TypeAnnotation"); } flowParseTypeAnnotatableIdentifier(allowPrimitiveOverride) { const ident = allowPrimitiveOverride ? this.parseIdentifier() : this.flowParseRestrictedIdentifier(); if (this.match(14)) { ident.typeAnnotation = this.flowParseTypeAnnotation(); this.resetEndLocation(ident); } return ident; } typeCastToParameter(node) { node.expression.typeAnnotation = node.typeAnnotation; this.resetEndLocation(node.expression, node.typeAnnotation.loc.end); return node.expression; } flowParseVariance() { let variance = null; if (this.match(53)) { variance = this.startNode(); if (this.state.value === "+") { variance.kind = "plus"; } else { variance.kind = "minus"; } this.next(); this.finishNode(variance, "Variance"); } return variance; } parseFunctionBody(node, allowExpressionBody, isMethod = false) { if (allowExpressionBody) { return this.forwardNoArrowParamsConversionAt(node, () => super.parseFunctionBody(node, true, isMethod)); } return super.parseFunctionBody(node, false, isMethod); } parseFunctionBodyAndFinish(node, type, isMethod = false) { if (this.match(14)) { const typeNode = this.startNode(); [typeNode.typeAnnotation, node.predicate] = this.flowParseTypeAndPredicateInitialiser(); node.returnType = typeNode.typeAnnotation ? this.finishNode(typeNode, "TypeAnnotation") : null; } super.parseFunctionBodyAndFinish(node, type, isMethod); } parseStatement(context, topLevel) { if (this.state.strict && this.isContextual(125)) { const lookahead = this.lookahead(); if (tokenIsKeywordOrIdentifier(lookahead.type)) { const node = this.startNode(); this.next(); return this.flowParseInterface(node); } } else if (this.shouldParseEnums() && this.isContextual(122)) { const node = this.startNode(); this.next(); return this.flowParseEnumDeclaration(node); } const stmt = super.parseStatement(context, topLevel); if (this.flowPragma === undefined && !this.isValidDirective(stmt)) { this.flowPragma = null; } return stmt; } parseExpressionStatement(node, expr) { if (expr.type === "Identifier") { if (expr.name === "declare") { if (this.match(80) || tokenIsIdentifier(this.state.type) || this.match(68) || this.match(74) || this.match(82)) { return this.flowParseDeclare(node); } } else if (tokenIsIdentifier(this.state.type)) { if (expr.name === "interface") { return this.flowParseInterface(node); } else if (expr.name === "type") { return this.flowParseTypeAlias(node); } else if (expr.name === "opaque") { return this.flowParseOpaqueType(node, false); } } } return super.parseExpressionStatement(node, expr); } shouldParseExportDeclaration() { const { type } = this.state; if (tokenIsFlowInterfaceOrTypeOrOpaque(type) || this.shouldParseEnums() && type === 122) { return !this.state.containsEsc; } return super.shouldParseExportDeclaration(); } isExportDefaultSpecifier() { const { type } = this.state; if (tokenIsFlowInterfaceOrTypeOrOpaque(type) || this.shouldParseEnums() && type === 122) { return this.state.containsEsc; } return super.isExportDefaultSpecifier(); } parseExportDefaultExpression() { if (this.shouldParseEnums() && this.isContextual(122)) { const node = this.startNode(); this.next(); return this.flowParseEnumDeclaration(node); } return super.parseExportDefaultExpression(); } parseConditional(expr, startPos, startLoc, refExpressionErrors) { if (!this.match(17)) return expr; if (this.state.maybeInArrowParameters) { const nextCh = this.lookaheadCharCode(); if (nextCh === 44 || nextCh === 61 || nextCh === 58 || nextCh === 41) { this.setOptionalParametersError(refExpressionErrors); return expr; } } this.expect(17); const state = this.state.clone(); const originalNoArrowAt = this.state.noArrowAt; const node = this.startNodeAt(startPos, startLoc); let { consequent, failed } = this.tryParseConditionalConsequent(); let [valid, invalid] = this.getArrowLikeExpressions(consequent); if (failed || invalid.length > 0) { const noArrowAt = [...originalNoArrowAt]; if (invalid.length > 0) { this.state = state; this.state.noArrowAt = noArrowAt; for (let i = 0; i < invalid.length; i++) { noArrowAt.push(invalid[i].start); } ({ consequent, failed } = this.tryParseConditionalConsequent()); [valid, invalid] = this.getArrowLikeExpressions(consequent); } if (failed && valid.length > 1) { this.raise(FlowErrors.AmbiguousConditionalArrow, { at: state.startLoc }); } if (failed && valid.length === 1) { this.state = state; noArrowAt.push(valid[0].start); this.state.noArrowAt = noArrowAt; ({ consequent, failed } = this.tryParseConditionalConsequent()); } } this.getArrowLikeExpressions(consequent, true); this.state.noArrowAt = originalNoArrowAt; this.expect(14); node.test = expr; node.consequent = consequent; node.alternate = this.forwardNoArrowParamsConversionAt(node, () => this.parseMaybeAssign(undefined, undefined)); return this.finishNode(node, "ConditionalExpression"); } tryParseConditionalConsequent() { this.state.noArrowParamsConversionAt.push(this.state.start); const consequent = this.parseMaybeAssignAllowIn(); const failed = !this.match(14); this.state.noArrowParamsConversionAt.pop(); return { consequent, failed }; } getArrowLikeExpressions(node, disallowInvalid) { const stack = [node]; const arrows = []; while (stack.length !== 0) { const node = stack.pop(); if (node.type === "ArrowFunctionExpression") { if (node.typeParameters || !node.returnType) { this.finishArrowValidation(node); } else { arrows.push(node); } stack.push(node.body); } else if (node.type === "ConditionalExpression") { stack.push(node.consequent); stack.push(node.alternate); } } if (disallowInvalid) { arrows.forEach(node => this.finishArrowValidation(node)); return [arrows, []]; } return partition(arrows, node => node.params.every(param => this.isAssignable(param, true))); } finishArrowValidation(node) { var _node$extra; this.toAssignableList(node.params, (_node$extra = node.extra) == null ? void 0 : _node$extra.trailingCommaLoc, false); this.scope.enter(SCOPE_FUNCTION | SCOPE_ARROW); super.checkParams(node, false, true); this.scope.exit(); } forwardNoArrowParamsConversionAt(node, parse) { let result; if (this.state.noArrowParamsConversionAt.indexOf(node.start) !== -1) { this.state.noArrowParamsConversionAt.push(this.state.start); result = parse(); this.state.noArrowParamsConversionAt.pop(); } else { result = parse(); } return result; } parseParenItem(node, startPos, startLoc) { node = super.parseParenItem(node, startPos, startLoc); if (this.eat(17)) { node.optional = true; this.resetEndLocation(node); } if (this.match(14)) { const typeCastNode = this.startNodeAt(startPos, startLoc); typeCastNode.expression = node; typeCastNode.typeAnnotation = this.flowParseTypeAnnotation(); return this.finishNode(typeCastNode, "TypeCastExpression"); } return node; } assertModuleNodeAllowed(node) { if (node.type === "ImportDeclaration" && (node.importKind === "type" || node.importKind === "typeof") || node.type === "ExportNamedDeclaration" && node.exportKind === "type" || node.type === "ExportAllDeclaration" && node.exportKind === "type") { return; } super.assertModuleNodeAllowed(node); } parseExport(node) { const decl = super.parseExport(node); if (decl.type === "ExportNamedDeclaration" || decl.type === "ExportAllDeclaration") { decl.exportKind = decl.exportKind || "value"; } return decl; } parseExportDeclaration(node) { if (this.isContextual(126)) { node.exportKind = "type"; const declarationNode = this.startNode(); this.next(); if (this.match(5)) { node.specifiers = this.parseExportSpecifiers(true); this.parseExportFrom(node); return null; } else { return this.flowParseTypeAlias(declarationNode); } } else if (this.isContextual(127)) { node.exportKind = "type"; const declarationNode = this.startNode(); this.next(); return this.flowParseOpaqueType(declarationNode, false); } else if (this.isContextual(125)) { node.exportKind = "type"; const declarationNode = this.startNode(); this.next(); return this.flowParseInterface(declarationNode); } else if (this.shouldParseEnums() && this.isContextual(122)) { node.exportKind = "value"; const declarationNode = this.startNode(); this.next(); return this.flowParseEnumDeclaration(declarationNode); } else { return super.parseExportDeclaration(node); } } eatExportStar(node) { if (super.eatExportStar(...arguments)) return true; if (this.isContextual(126) && this.lookahead().type === 55) { node.exportKind = "type"; this.next(); this.next(); return true; } return false; } maybeParseExportNamespaceSpecifier(node) { const { startLoc } = this.state; const hasNamespace = super.maybeParseExportNamespaceSpecifier(node); if (hasNamespace && node.exportKind === "type") { this.unexpected(startLoc); } return hasNamespace; } parseClassId(node, isStatement, optionalId) { super.parseClassId(node, isStatement, optionalId); if (this.match(47)) { node.typeParameters = this.flowParseTypeParameterDeclaration(); } } parseClassMember(classBody, member, state) { const { startLoc } = this.state; if (this.isContextual(121)) { if (this.parseClassMemberFromModifier(classBody, member)) { return; } member.declare = true; } super.parseClassMember(classBody, member, state); if (member.declare) { if (member.type !== "ClassProperty" && member.type !== "ClassPrivateProperty" && member.type !== "PropertyDefinition") { this.raise(FlowErrors.DeclareClassElement, { at: startLoc }); } else if (member.value) { this.raise(FlowErrors.DeclareClassFieldInitializer, { node: member.value }); } } } isIterator(word) { return word === "iterator" || word === "asyncIterator"; } readIterator() { const word = super.readWord1(); const fullWord = "@@" + word; if (!this.isIterator(word) || !this.state.inType) { this.raise(ErrorMessages.InvalidIdentifier, { at: this.state.curPosition() }, fullWord); } this.finishToken(128, fullWord); } getTokenFromCode(code) { const next = this.input.charCodeAt(this.state.pos + 1); if (code === 123 && next === 124) { return this.finishOp(6, 2); } else if (this.state.inType && (code === 62 || code === 60)) { return this.finishOp(code === 62 ? 48 : 47, 1); } else if (this.state.inType && code === 63) { if (next === 46) { return this.finishOp(18, 2); } return this.finishOp(17, 1); } else if (isIteratorStart(code, next, this.input.charCodeAt(this.state.pos + 2))) { this.state.pos += 2; return this.readIterator(); } else { return super.getTokenFromCode(code); } } isAssignable(node, isBinding) { if (node.type === "TypeCastExpression") { return this.isAssignable(node.expression, isBinding); } else { return super.isAssignable(node, isBinding); } } toAssignable(node, isLHS = false) { if (node.type === "TypeCastExpression") { return super.toAssignable(this.typeCastToParameter(node), isLHS); } else { return super.toAssignable(node, isLHS); } } toAssignableList(exprList, trailingCommaLoc, isLHS) { for (let i = 0; i < exprList.length; i++) { const expr = exprList[i]; if ((expr == null ? void 0 : expr.type) === "TypeCastExpression") { exprList[i] = this.typeCastToParameter(expr); } } return super.toAssignableList(exprList, trailingCommaLoc, isLHS); } toReferencedList(exprList, isParenthesizedExpr) { for (let i = 0; i < exprList.length; i++) { var _expr$extra; const expr = exprList[i]; if (expr && expr.type === "TypeCastExpression" && !((_expr$extra = expr.extra) != null && _expr$extra.parenthesized) && (exprList.length > 1 || !isParenthesizedExpr)) { this.raise(FlowErrors.TypeCastInPattern, { node: expr.typeAnnotation }); } } return exprList; } parseArrayLike(close, canBePattern, isTuple, refExpressionErrors) { const node = super.parseArrayLike(close, canBePattern, isTuple, refExpressionErrors); if (canBePattern && !this.state.maybeInArrowParameters) { this.toReferencedList(node.elements); } return node; } checkLVal(expr, ...args) { if (expr.type !== "TypeCastExpression") { return super.checkLVal(expr, ...args); } } parseClassProperty(node) { if (this.match(14)) { node.typeAnnotation = this.flowParseTypeAnnotation(); } return super.parseClassProperty(node); } parseClassPrivateProperty(node) { if (this.match(14)) { node.typeAnnotation = this.flowParseTypeAnnotation(); } return super.parseClassPrivateProperty(node); } isClassMethod() { return this.match(47) || super.isClassMethod(); } isClassProperty() { return this.match(14) || super.isClassProperty(); } isNonstaticConstructor(method) { return !this.match(14) && super.isNonstaticConstructor(method); } pushClassMethod(classBody, method, isGenerator, isAsync, isConstructor, allowsDirectSuper) { if (method.variance) { this.unexpected(method.variance.loc.start); } delete method.variance; if (this.match(47)) { method.typeParameters = this.flowParseTypeParameterDeclaration(); } super.pushClassMethod(classBody, method, isGenerator, isAsync, isConstructor, allowsDirectSuper); if (method.params && isConstructor) { const params = method.params; if (params.length > 0 && this.isThisParam(params[0])) { this.raise(FlowErrors.ThisParamBannedInConstructor, { node: method }); } } else if (method.type === "MethodDefinition" && isConstructor && method.value.params) { const params = method.value.params; if (params.length > 0 && this.isThisParam(params[0])) { this.raise(FlowErrors.ThisParamBannedInConstructor, { node: method }); } } } pushClassPrivateMethod(classBody, method, isGenerator, isAsync) { if (method.variance) { this.unexpected(method.variance.loc.start); } delete method.variance; if (this.match(47)) { method.typeParameters = this.flowParseTypeParameterDeclaration(); } super.pushClassPrivateMethod(classBody, method, isGenerator, isAsync); } parseClassSuper(node) { super.parseClassSuper(node); if (node.superClass && this.match(47)) { node.superTypeParameters = this.flowParseTypeParameterInstantiation(); } if (this.isContextual(110)) { this.next(); const implemented = node.implements = []; do { const node = this.startNode(); node.id = this.flowParseRestrictedIdentifier(true); if (this.match(47)) { node.typeParameters = this.flowParseTypeParameterInstantiation(); } else { node.typeParameters = null; } implemented.push(this.finishNode(node, "ClassImplements")); } while (this.eat(12)); } } checkGetterSetterParams(method) { super.checkGetterSetterParams(method); const params = this.getObjectOrClassMethodParams(method); if (params.length > 0) { const param = params[0]; if (this.isThisParam(param) && method.kind === "get") { this.raise(FlowErrors.GetterMayNotHaveThisParam, { node: param }); } else if (this.isThisParam(param)) { this.raise(FlowErrors.SetterMayNotHaveThisParam, { node: param }); } } } parsePropertyNamePrefixOperator(node) { node.variance = this.flowParseVariance(); } parseObjPropValue(prop, startPos, startLoc, isGenerator, isAsync, isPattern, isAccessor, refExpressionErrors) { if (prop.variance) { this.unexpected(prop.variance.loc.start); } delete prop.variance; let typeParameters; if (this.match(47) && !isAccessor) { typeParameters = this.flowParseTypeParameterDeclaration(); if (!this.match(10)) this.unexpected(); } super.parseObjPropValue(prop, startPos, startLoc, isGenerator, isAsync, isPattern, isAccessor, refExpressionErrors); if (typeParameters) { (prop.value || prop).typeParameters = typeParameters; } } parseAssignableListItemTypes(param) { if (this.eat(17)) { if (param.type !== "Identifier") { this.raise(FlowErrors.PatternIsOptional, { node: param }); } if (this.isThisParam(param)) { this.raise(FlowErrors.ThisParamMayNotBeOptional, { node: param }); } param.optional = true; } if (this.match(14)) { param.typeAnnotation = this.flowParseTypeAnnotation(); } else if (this.isThisParam(param)) { this.raise(FlowErrors.ThisParamAnnotationRequired, { node: param }); } if (this.match(29) && this.isThisParam(param)) { this.raise(FlowErrors.ThisParamNoDefault, { node: param }); } this.resetEndLocation(param); return param; } parseMaybeDefault(startPos, startLoc, left) { const node = super.parseMaybeDefault(startPos, startLoc, left); if (node.type === "AssignmentPattern" && node.typeAnnotation && node.right.start < node.typeAnnotation.start) { this.raise(FlowErrors.TypeBeforeInitializer, { node: node.typeAnnotation }); } return node; } shouldParseDefaultImport(node) { if (!hasTypeImportKind(node)) { return super.shouldParseDefaultImport(node); } return isMaybeDefaultImport(this.state.type); } parseImportSpecifierLocal(node, specifier, type, contextDescription) { specifier.local = hasTypeImportKind(node) ? this.flowParseRestrictedIdentifier(true, true) : this.parseIdentifier(); this.checkLVal(specifier.local, contextDescription, BIND_LEXICAL); node.specifiers.push(this.finishNode(specifier, type)); } maybeParseDefaultImportSpecifier(node) { node.importKind = "value"; let kind = null; if (this.match(87)) { kind = "typeof"; } else if (this.isContextual(126)) { kind = "type"; } if (kind) { const lh = this.lookahead(); const { type } = lh; if (kind === "type" && type === 55) { this.unexpected(null, lh.type); } if (isMaybeDefaultImport(type) || type === 5 || type === 55) { this.next(); node.importKind = kind; } } return super.maybeParseDefaultImportSpecifier(node); } parseImportSpecifier(specifier, importedIsString, isInTypeOnlyImport, isMaybeTypeOnly) { const firstIdent = specifier.imported; let specifierTypeKind = null; if (firstIdent.type === "Identifier") { if (firstIdent.name === "type") { specifierTypeKind = "type"; } else if (firstIdent.name === "typeof") { specifierTypeKind = "typeof"; } } let isBinding = false; if (this.isContextual(93) && !this.isLookaheadContextual("as")) { const as_ident = this.parseIdentifier(true); if (specifierTypeKind !== null && !tokenIsKeywordOrIdentifier(this.state.type)) { specifier.imported = as_ident; specifier.importKind = specifierTypeKind; specifier.local = cloneIdentifier(as_ident); } else { specifier.imported = firstIdent; specifier.importKind = null; specifier.local = this.parseIdentifier(); } } else { if (specifierTypeKind !== null && tokenIsKeywordOrIdentifier(this.state.type)) { specifier.imported = this.parseIdentifier(true); specifier.importKind = specifierTypeKind; } else { if (importedIsString) { throw this.raise(ErrorMessages.ImportBindingIsString, { node: specifier }, firstIdent.value); } specifier.imported = firstIdent; specifier.importKind = null; } if (this.eatContextual(93)) { specifier.local = this.parseIdentifier(); } else { isBinding = true; specifier.local = cloneIdentifier(specifier.imported); } } const specifierIsTypeImport = hasTypeImportKind(specifier); if (isInTypeOnlyImport && specifierIsTypeImport) { this.raise(FlowErrors.ImportTypeShorthandOnlyInPureImport, { node: specifier }); } if (isInTypeOnlyImport || specifierIsTypeImport) { this.checkReservedType(specifier.local.name, specifier.local.loc.start, true); } if (isBinding && !isInTypeOnlyImport && !specifierIsTypeImport) { this.checkReservedWord(specifier.local.name, specifier.loc.start, true, true); } this.checkLVal(specifier.local, "import specifier", BIND_LEXICAL); return this.finishNode(specifier, "ImportSpecifier"); } parseBindingAtom() { switch (this.state.type) { case 78: return this.parseIdentifier(true); default: return super.parseBindingAtom(); } } parseFunctionParams(node, allowModifiers) { const kind = node.kind; if (kind !== "get" && kind !== "set" && this.match(47)) { node.typeParameters = this.flowParseTypeParameterDeclaration(); } super.parseFunctionParams(node, allowModifiers); } parseVarId(decl, kind) { super.parseVarId(decl, kind); if (this.match(14)) { decl.id.typeAnnotation = this.flowParseTypeAnnotation(); this.resetEndLocation(decl.id); } } parseAsyncArrowFromCallExpression(node, call) { if (this.match(14)) { const oldNoAnonFunctionType = this.state.noAnonFunctionType; this.state.noAnonFunctionType = true; node.returnType = this.flowParseTypeAnnotation(); this.state.noAnonFunctionType = oldNoAnonFunctionType; } return super.parseAsyncArrowFromCallExpression(node, call); } shouldParseAsyncArrow() { return this.match(14) || super.shouldParseAsyncArrow(); } parseMaybeAssign(refExpressionErrors, afterLeftParse) { var _jsx; let state = null; let jsx; if (this.hasPlugin("jsx") && (this.match(138) || this.match(47))) { state = this.state.clone(); jsx = this.tryParse(() => super.parseMaybeAssign(refExpressionErrors, afterLeftParse), state); if (!jsx.error) return jsx.node; const { context } = this.state; const currentContext = context[context.length - 1]; if (currentContext === types.j_oTag || currentContext === types.j_expr) { context.pop(); } } if ((_jsx = jsx) != null && _jsx.error || this.match(47)) { var _jsx2, _jsx3; state = state || this.state.clone(); let typeParameters; const arrow = this.tryParse(abort => { var _arrowExpression$extr; typeParameters = this.flowParseTypeParameterDeclaration(); const arrowExpression = this.forwardNoArrowParamsConversionAt(typeParameters, () => { const result = super.parseMaybeAssign(refExpressionErrors, afterLeftParse); this.resetStartLocationFromNode(result, typeParameters); return result; }); if ((_arrowExpression$extr = arrowExpression.extra) != null && _arrowExpression$extr.parenthesized) abort(); const expr = this.maybeUnwrapTypeCastExpression(arrowExpression); if (expr.type !== "ArrowFunctionExpression") abort(); expr.typeParameters = typeParameters; this.resetStartLocationFromNode(expr, typeParameters); return arrowExpression; }, state); let arrowExpression = null; if (arrow.node && this.maybeUnwrapTypeCastExpression(arrow.node).type === "ArrowFunctionExpression") { if (!arrow.error && !arrow.aborted) { if (arrow.node.async) { this.raise(FlowErrors.UnexpectedTypeParameterBeforeAsyncArrowFunction, { node: typeParameters }); } return arrow.node; } arrowExpression = arrow.node; } if ((_jsx2 = jsx) != null && _jsx2.node) { this.state = jsx.failState; return jsx.node; } if (arrowExpression) { this.state = arrow.failState; return arrowExpression; } if ((_jsx3 = jsx) != null && _jsx3.thrown) throw jsx.error; if (arrow.thrown) throw arrow.error; throw this.raise(FlowErrors.UnexpectedTokenAfterTypeParameter, { node: typeParameters }); } return super.parseMaybeAssign(refExpressionErrors, afterLeftParse); } parseArrow(node) { if (this.match(14)) { const result = this.tryParse(() => { const oldNoAnonFunctionType = this.state.noAnonFunctionType; this.state.noAnonFunctionType = true; const typeNode = this.startNode(); [typeNode.typeAnnotation, node.predicate] = this.flowParseTypeAndPredicateInitialiser(); this.state.noAnonFunctionType = oldNoAnonFunctionType; if (this.canInsertSemicolon()) this.unexpected(); if (!this.match(19)) this.unexpected(); return typeNode; }); if (result.thrown) return null; if (result.error) this.state = result.failState; node.returnType = result.node.typeAnnotation ? this.finishNode(result.node, "TypeAnnotation") : null; } return super.parseArrow(node); } shouldParseArrow(params) { return this.match(14) || super.shouldParseArrow(params); } setArrowFunctionParameters(node, params) { if (this.state.noArrowParamsConversionAt.indexOf(node.start) !== -1) { node.params = params; } else { super.setArrowFunctionParameters(node, params); } } checkParams(node, allowDuplicates, isArrowFunction) { if (isArrowFunction && this.state.noArrowParamsConversionAt.indexOf(node.start) !== -1) { return; } for (let i = 0; i < node.params.length; i++) { if (this.isThisParam(node.params[i]) && i > 0) { this.raise(FlowErrors.ThisParamMustBeFirst, { node: node.params[i] }); } } return super.checkParams(...arguments); } parseParenAndDistinguishExpression(canBeArrow) { return super.parseParenAndDistinguishExpression(canBeArrow && this.state.noArrowAt.indexOf(this.state.start) === -1); } parseSubscripts(base, startPos, startLoc, noCalls) { if (base.type === "Identifier" && base.name === "async" && this.state.noArrowAt.indexOf(startPos) !== -1) { this.next(); const node = this.startNodeAt(startPos, startLoc); node.callee = base; node.arguments = this.parseCallExpressionArguments(11, false); base = this.finishNode(node, "CallExpression"); } else if (base.type === "Identifier" && base.name === "async" && this.match(47)) { const state = this.state.clone(); const arrow = this.tryParse(abort => this.parseAsyncArrowWithTypeParameters(startPos, startLoc) || abort(), state); if (!arrow.error && !arrow.aborted) return arrow.node; const result = this.tryParse(() => super.parseSubscripts(base, startPos, startLoc, noCalls), state); if (result.node && !result.error) return result.node; if (arrow.node) { this.state = arrow.failState; return arrow.node; } if (result.node) { this.state = result.failState; return result.node; } throw arrow.error || result.error; } return super.parseSubscripts(base, startPos, startLoc, noCalls); } parseSubscript(base, startPos, startLoc, noCalls, subscriptState) { if (this.match(18) && this.isLookaheadToken_lt()) { subscriptState.optionalChainMember = true; if (noCalls) { subscriptState.stop = true; return base; } this.next(); const node = this.startNodeAt(startPos, startLoc); node.callee = base; node.typeArguments = this.flowParseTypeParameterInstantiation(); this.expect(10); node.arguments = this.parseCallExpressionArguments(11, false); node.optional = true; return this.finishCallExpression(node, true); } else if (!noCalls && this.shouldParseTypes() && this.match(47)) { const node = this.startNodeAt(startPos, startLoc); node.callee = base; const result = this.tryParse(() => { node.typeArguments = this.flowParseTypeParameterInstantiationCallOrNew(); this.expect(10); node.arguments = this.parseCallExpressionArguments(11, false); if (subscriptState.optionalChainMember) node.optional = false; return this.finishCallExpression(node, subscriptState.optionalChainMember); }); if (result.node) { if (result.error) this.state = result.failState; return result.node; } } return super.parseSubscript(base, startPos, startLoc, noCalls, subscriptState); } parseNewArguments(node) { let targs = null; if (this.shouldParseTypes() && this.match(47)) { targs = this.tryParse(() => this.flowParseTypeParameterInstantiationCallOrNew()).node; } node.typeArguments = targs; super.parseNewArguments(node); } parseAsyncArrowWithTypeParameters(startPos, startLoc) { const node = this.startNodeAt(startPos, startLoc); this.parseFunctionParams(node); if (!this.parseArrow(node)) return; return this.parseArrowExpression(node, undefined, true); } readToken_mult_modulo(code) { const next = this.input.charCodeAt(this.state.pos + 1); if (code === 42 && next === 47 && this.state.hasFlowComment) { this.state.hasFlowComment = false; this.state.pos += 2; this.nextToken(); return; } super.readToken_mult_modulo(code); } readToken_pipe_amp(code) { const next = this.input.charCodeAt(this.state.pos + 1); if (code === 124 && next === 125) { this.finishOp(9, 2); return; } super.readToken_pipe_amp(code); } parseTopLevel(file, program) { const fileNode = super.parseTopLevel(file, program); if (this.state.hasFlowComment) { this.raise(FlowErrors.UnterminatedFlowComment, { at: this.state.curPosition() }); } return fileNode; } skipBlockComment() { if (this.hasPlugin("flowComments") && this.skipFlowComment()) { if (this.state.hasFlowComment) { throw this.raise(FlowErrors.NestedFlowComment, { at: this.state.startLoc }); } this.hasFlowCommentCompletion(); this.state.pos += this.skipFlowComment(); this.state.hasFlowComment = true; return; } if (this.state.hasFlowComment) { const end = this.input.indexOf("*-/", this.state.pos + 2); if (end === -1) { throw this.raise(ErrorMessages.UnterminatedComment, { at: this.state.curPosition() }); } this.state.pos = end + 2 + 3; return; } return super.skipBlockComment(); } skipFlowComment() { const { pos } = this.state; let shiftToFirstNonWhiteSpace = 2; while ([32, 9].includes(this.input.charCodeAt(pos + shiftToFirstNonWhiteSpace))) { shiftToFirstNonWhiteSpace++; } const ch2 = this.input.charCodeAt(shiftToFirstNonWhiteSpace + pos); const ch3 = this.input.charCodeAt(shiftToFirstNonWhiteSpace + pos + 1); if (ch2 === 58 && ch3 === 58) { return shiftToFirstNonWhiteSpace + 2; } if (this.input.slice(shiftToFirstNonWhiteSpace + pos, shiftToFirstNonWhiteSpace + pos + 12) === "flow-include") { return shiftToFirstNonWhiteSpace + 12; } if (ch2 === 58 && ch3 !== 58) { return shiftToFirstNonWhiteSpace; } return false; } hasFlowCommentCompletion() { const end = this.input.indexOf("*/", this.state.pos); if (end === -1) { throw this.raise(ErrorMessages.UnterminatedComment, { at: this.state.curPosition() }); } } flowEnumErrorBooleanMemberNotInitialized(loc, { enumName, memberName }) { this.raise(FlowErrors.EnumBooleanMemberNotInitialized, { at: loc }, memberName, enumName); } flowEnumErrorInvalidExplicitType(loc, { enumName, suppliedType }) { return this.raise(suppliedType === null ? FlowErrors.EnumInvalidExplicitTypeUnknownSupplied : FlowErrors.EnumInvalidExplicitType, { at: loc }, enumName, suppliedType); } flowEnumErrorInvalidMemberInitializer(loc, { enumName, explicitType, memberName }) { return this.raise(explicitType === "boolean" || explicitType === "number" || explicitType === "string" ? FlowErrors.EnumInvalidMemberInitializerPrimaryType : explicitType === "symbol" ? FlowErrors.EnumInvalidMemberInitializerSymbolType : FlowErrors.EnumInvalidMemberInitializerUnknownType, { at: loc }, enumName, memberName, explicitType); } flowEnumErrorNumberMemberNotInitialized(loc, { enumName, memberName }) { this.raise(FlowErrors.EnumNumberMemberNotInitialized, { at: loc }, enumName, memberName); } flowEnumErrorStringMemberInconsistentlyInitailized(node, { enumName }) { this.raise(FlowErrors.EnumStringMemberInconsistentlyInitailized, { node }, enumName); } flowEnumMemberInit() { const startLoc = this.state.startLoc; const endOfInit = () => this.match(12) || this.match(8); switch (this.state.type) { case 130: { const literal = this.parseNumericLiteral(this.state.value); if (endOfInit()) { return { type: "number", loc: literal.loc.start, value: literal }; } return { type: "invalid", loc: startLoc }; } case 129: { const literal = this.parseStringLiteral(this.state.value); if (endOfInit()) { return { type: "string", loc: literal.loc.start, value: literal }; } return { type: "invalid", loc: startLoc }; } case 85: case 86: { const literal = this.parseBooleanLiteral(this.match(85)); if (endOfInit()) { return { type: "boolean", loc: literal.loc.start, value: literal }; } return { type: "invalid", loc: startLoc }; } default: return { type: "invalid", loc: startLoc }; } } flowEnumMemberRaw() { const loc = this.state.startLoc; const id = this.parseIdentifier(true); const init = this.eat(29) ? this.flowEnumMemberInit() : { type: "none", loc }; return { id, init }; } flowEnumCheckExplicitTypeMismatch(loc, context, expectedType) { const { explicitType } = context; if (explicitType === null) { return; } if (explicitType !== expectedType) { this.flowEnumErrorInvalidMemberInitializer(loc, context); } } flowEnumMembers({ enumName, explicitType }) { const seenNames = new Set(); const members = { booleanMembers: [], numberMembers: [], stringMembers: [], defaultedMembers: [] }; let hasUnknownMembers = false; while (!this.match(8)) { if (this.eat(21)) { hasUnknownMembers = true; break; } const memberNode = this.startNode(); const { id, init } = this.flowEnumMemberRaw(); const memberName = id.name; if (memberName === "") { continue; } if (/^[a-z]/.test(memberName)) { this.raise(FlowErrors.EnumInvalidMemberName, { node: id }, memberName, memberName[0].toUpperCase() + memberName.slice(1), enumName); } if (seenNames.has(memberName)) { this.raise(FlowErrors.EnumDuplicateMemberName, { node: id }, memberName, enumName); } seenNames.add(memberName); const context = { enumName, explicitType, memberName }; memberNode.id = id; switch (init.type) { case "boolean": { this.flowEnumCheckExplicitTypeMismatch(init.loc, context, "boolean"); memberNode.init = init.value; members.booleanMembers.push(this.finishNode(memberNode, "EnumBooleanMember")); break; } case "number": { this.flowEnumCheckExplicitTypeMismatch(init.loc, context, "number"); memberNode.init = init.value; members.numberMembers.push(this.finishNode(memberNode, "EnumNumberMember")); break; } case "string": { this.flowEnumCheckExplicitTypeMismatch(init.loc, context, "string"); memberNode.init = init.value; members.stringMembers.push(this.finishNode(memberNode, "EnumStringMember")); break; } case "invalid": { throw this.flowEnumErrorInvalidMemberInitializer(init.loc, context); } case "none": { switch (explicitType) { case "boolean": this.flowEnumErrorBooleanMemberNotInitialized(init.loc, context); break; case "number": this.flowEnumErrorNumberMemberNotInitialized(init.loc, context); break; default: members.defaultedMembers.push(this.finishNode(memberNode, "EnumDefaultedMember")); } } } if (!this.match(8)) { this.expect(12); } } return { members, hasUnknownMembers }; } flowEnumStringMembers(initializedMembers, defaultedMembers, { enumName }) { if (initializedMembers.length === 0) { return defaultedMembers; } else if (defaultedMembers.length === 0) { return initializedMembers; } else if (defaultedMembers.length > initializedMembers.length) { for (const member of initializedMembers) { this.flowEnumErrorStringMemberInconsistentlyInitailized(member, { enumName }); } return defaultedMembers; } else { for (const member of defaultedMembers) { this.flowEnumErrorStringMemberInconsistentlyInitailized(member, { enumName }); } return initializedMembers; } } flowEnumParseExplicitType({ enumName }) { if (this.eatContextual(101)) { if (!tokenIsIdentifier(this.state.type)) { throw this.flowEnumErrorInvalidExplicitType(this.state.startLoc, { enumName, suppliedType: null }); } const { value } = this.state; this.next(); if (value !== "boolean" && value !== "number" && value !== "string" && value !== "symbol") { this.flowEnumErrorInvalidExplicitType(this.state.startLoc, { enumName, suppliedType: value }); } return value; } return null; } flowEnumBody(node, id) { const enumName = id.name; const nameLoc = id.loc.start; const explicitType = this.flowEnumParseExplicitType({ enumName }); this.expect(5); const { members, hasUnknownMembers } = this.flowEnumMembers({ enumName, explicitType }); node.hasUnknownMembers = hasUnknownMembers; switch (explicitType) { case "boolean": node.explicitType = true; node.members = members.booleanMembers; this.expect(8); return this.finishNode(node, "EnumBooleanBody"); case "number": node.explicitType = true; node.members = members.numberMembers; this.expect(8); return this.finishNode(node, "EnumNumberBody"); case "string": node.explicitType = true; node.members = this.flowEnumStringMembers(members.stringMembers, members.defaultedMembers, { enumName }); this.expect(8); return this.finishNode(node, "EnumStringBody"); case "symbol": node.members = members.defaultedMembers; this.expect(8); return this.finishNode(node, "EnumSymbolBody"); default: { const empty = () => { node.members = []; this.expect(8); return this.finishNode(node, "EnumStringBody"); }; node.explicitType = false; const boolsLen = members.booleanMembers.length; const numsLen = members.numberMembers.length; const strsLen = members.stringMembers.length; const defaultedLen = members.defaultedMembers.length; if (!boolsLen && !numsLen && !strsLen && !defaultedLen) { return empty(); } else if (!boolsLen && !numsLen) { node.members = this.flowEnumStringMembers(members.stringMembers, members.defaultedMembers, { enumName }); this.expect(8); return this.finishNode(node, "EnumStringBody"); } else if (!numsLen && !strsLen && boolsLen >= defaultedLen) { for (const member of members.defaultedMembers) { this.flowEnumErrorBooleanMemberNotInitialized(member.loc.start, { enumName, memberName: member.id.name }); } node.members = members.booleanMembers; this.expect(8); return this.finishNode(node, "EnumBooleanBody"); } else if (!boolsLen && !strsLen && numsLen >= defaultedLen) { for (const member of members.defaultedMembers) { this.flowEnumErrorNumberMemberNotInitialized(member.loc.start, { enumName, memberName: member.id.name }); } node.members = members.numberMembers; this.expect(8); return this.finishNode(node, "EnumNumberBody"); } else { this.raise(FlowErrors.EnumInconsistentMemberValues, { at: nameLoc }, enumName); return empty(); } } } } flowParseEnumDeclaration(node) { const id = this.parseIdentifier(); node.id = id; node.body = this.flowEnumBody(this.startNode(), id); return this.finishNode(node, "EnumDeclaration"); } isLookaheadToken_lt() { const next = this.nextTokenStart(); if (this.input.charCodeAt(next) === 60) { const afterNext = this.input.charCodeAt(next + 1); return afterNext !== 60 && afterNext !== 61; } return false; } maybeUnwrapTypeCastExpression(node) { return node.type === "TypeCastExpression" ? node.expression : node; } }); const entities = { quot: "\u0022", amp: "&", apos: "\u0027", lt: "<", gt: ">", nbsp: "\u00A0", iexcl: "\u00A1", cent: "\u00A2", pound: "\u00A3", curren: "\u00A4", yen: "\u00A5", brvbar: "\u00A6", sect: "\u00A7", uml: "\u00A8", copy: "\u00A9", ordf: "\u00AA", laquo: "\u00AB", not: "\u00AC", shy: "\u00AD", reg: "\u00AE", macr: "\u00AF", deg: "\u00B0", plusmn: "\u00B1", sup2: "\u00B2", sup3: "\u00B3", acute: "\u00B4", micro: "\u00B5", para: "\u00B6", middot: "\u00B7", cedil: "\u00B8", sup1: "\u00B9", ordm: "\u00BA", raquo: "\u00BB", frac14: "\u00BC", frac12: "\u00BD", frac34: "\u00BE", iquest: "\u00BF", Agrave: "\u00C0", Aacute: "\u00C1", Acirc: "\u00C2", Atilde: "\u00C3", Auml: "\u00C4", Aring: "\u00C5", AElig: "\u00C6", Ccedil: "\u00C7", Egrave: "\u00C8", Eacute: "\u00C9", Ecirc: "\u00CA", Euml: "\u00CB", Igrave: "\u00CC", Iacute: "\u00CD", Icirc: "\u00CE", Iuml: "\u00CF", ETH: "\u00D0", Ntilde: "\u00D1", Ograve: "\u00D2", Oacute: "\u00D3", Ocirc: "\u00D4", Otilde: "\u00D5", Ouml: "\u00D6", times: "\u00D7", Oslash: "\u00D8", Ugrave: "\u00D9", Uacute: "\u00DA", Ucirc: "\u00DB", Uuml: "\u00DC", Yacute: "\u00DD", THORN: "\u00DE", szlig: "\u00DF", agrave: "\u00E0", aacute: "\u00E1", acirc: "\u00E2", atilde: "\u00E3", auml: "\u00E4", aring: "\u00E5", aelig: "\u00E6", ccedil: "\u00E7", egrave: "\u00E8", eacute: "\u00E9", ecirc: "\u00EA", euml: "\u00EB", igrave: "\u00EC", iacute: "\u00ED", icirc: "\u00EE", iuml: "\u00EF", eth: "\u00F0", ntilde: "\u00F1", ograve: "\u00F2", oacute: "\u00F3", ocirc: "\u00F4", otilde: "\u00F5", ouml: "\u00F6", divide: "\u00F7", oslash: "\u00F8", ugrave: "\u00F9", uacute: "\u00FA", ucirc: "\u00FB", uuml: "\u00FC", yacute: "\u00FD", thorn: "\u00FE", yuml: "\u00FF", OElig: "\u0152", oelig: "\u0153", Scaron: "\u0160", scaron: "\u0161", Yuml: "\u0178", fnof: "\u0192", circ: "\u02C6", tilde: "\u02DC", Alpha: "\u0391", Beta: "\u0392", Gamma: "\u0393", Delta: "\u0394", Epsilon: "\u0395", Zeta: "\u0396", Eta: "\u0397", Theta: "\u0398", Iota: "\u0399", Kappa: "\u039A", Lambda: "\u039B", Mu: "\u039C", Nu: "\u039D", Xi: "\u039E", Omicron: "\u039F", Pi: "\u03A0", Rho: "\u03A1", Sigma: "\u03A3", Tau: "\u03A4", Upsilon: "\u03A5", Phi: "\u03A6", Chi: "\u03A7", Psi: "\u03A8", Omega: "\u03A9", alpha: "\u03B1", beta: "\u03B2", gamma: "\u03B3", delta: "\u03B4", epsilon: "\u03B5", zeta: "\u03B6", eta: "\u03B7", theta: "\u03B8", iota: "\u03B9", kappa: "\u03BA", lambda: "\u03BB", mu: "\u03BC", nu: "\u03BD", xi: "\u03BE", omicron: "\u03BF", pi: "\u03C0", rho: "\u03C1", sigmaf: "\u03C2", sigma: "\u03C3", tau: "\u03C4", upsilon: "\u03C5", phi: "\u03C6", chi: "\u03C7", psi: "\u03C8", omega: "\u03C9", thetasym: "\u03D1", upsih: "\u03D2", piv: "\u03D6", ensp: "\u2002", emsp: "\u2003", thinsp: "\u2009", zwnj: "\u200C", zwj: "\u200D", lrm: "\u200E", rlm: "\u200F", ndash: "\u2013", mdash: "\u2014", lsquo: "\u2018", rsquo: "\u2019", sbquo: "\u201A", ldquo: "\u201C", rdquo: "\u201D", bdquo: "\u201E", dagger: "\u2020", Dagger: "\u2021", bull: "\u2022", hellip: "\u2026", permil: "\u2030", prime: "\u2032", Prime: "\u2033", lsaquo: "\u2039", rsaquo: "\u203A", oline: "\u203E", frasl: "\u2044", euro: "\u20AC", image: "\u2111", weierp: "\u2118", real: "\u211C", trade: "\u2122", alefsym: "\u2135", larr: "\u2190", uarr: "\u2191", rarr: "\u2192", darr: "\u2193", harr: "\u2194", crarr: "\u21B5", lArr: "\u21D0", uArr: "\u21D1", rArr: "\u21D2", dArr: "\u21D3", hArr: "\u21D4", forall: "\u2200", part: "\u2202", exist: "\u2203", empty: "\u2205", nabla: "\u2207", isin: "\u2208", notin: "\u2209", ni: "\u220B", prod: "\u220F", sum: "\u2211", minus: "\u2212", lowast: "\u2217", radic: "\u221A", prop: "\u221D", infin: "\u221E", ang: "\u2220", and: "\u2227", or: "\u2228", cap: "\u2229", cup: "\u222A", int: "\u222B", there4: "\u2234", sim: "\u223C", cong: "\u2245", asymp: "\u2248", ne: "\u2260", equiv: "\u2261", le: "\u2264", ge: "\u2265", sub: "\u2282", sup: "\u2283", nsub: "\u2284", sube: "\u2286", supe: "\u2287", oplus: "\u2295", otimes: "\u2297", perp: "\u22A5", sdot: "\u22C5", lceil: "\u2308", rceil: "\u2309", lfloor: "\u230A", rfloor: "\u230B", lang: "\u2329", rang: "\u232A", loz: "\u25CA", spades: "\u2660", clubs: "\u2663", hearts: "\u2665", diams: "\u2666" }; const HEX_NUMBER = /^[\da-fA-F]+$/; const DECIMAL_NUMBER = /^\d+$/; const JsxErrors = makeErrorTemplates({ AttributeIsEmpty: "JSX attributes must only be assigned a non-empty expression.", MissingClosingTagElement: "Expected corresponding JSX closing tag for <%0>.", MissingClosingTagFragment: "Expected corresponding JSX closing tag for <>.", UnexpectedSequenceExpression: "Sequence expressions cannot be directly nested inside JSX. Did you mean to wrap it in parentheses (...)?", UnsupportedJsxValue: "JSX value should be either an expression or a quoted JSX text.", UnterminatedJsxContent: "Unterminated JSX contents.", UnwrappedAdjacentJSXElements: "Adjacent JSX elements must be wrapped in an enclosing tag. Did you want a JSX fragment <>...?" }, ErrorCodes.SyntaxError, "jsx"); function isFragment(object) { return object ? object.type === "JSXOpeningFragment" || object.type === "JSXClosingFragment" : false; } function getQualifiedJSXName(object) { if (object.type === "JSXIdentifier") { return object.name; } if (object.type === "JSXNamespacedName") { return object.namespace.name + ":" + object.name.name; } if (object.type === "JSXMemberExpression") { return getQualifiedJSXName(object.object) + "." + getQualifiedJSXName(object.property); } throw new Error("Node had unexpected type: " + object.type); } var jsx = (superClass => class extends superClass { jsxReadToken() { let out = ""; let chunkStart = this.state.pos; for (;;) { if (this.state.pos >= this.length) { throw this.raise(JsxErrors.UnterminatedJsxContent, { at: this.state.startLoc }); } const ch = this.input.charCodeAt(this.state.pos); switch (ch) { case 60: case 123: if (this.state.pos === this.state.start) { if (ch === 60 && this.state.canStartJSXElement) { ++this.state.pos; return this.finishToken(138); } return super.getTokenFromCode(ch); } out += this.input.slice(chunkStart, this.state.pos); return this.finishToken(137, out); case 38: out += this.input.slice(chunkStart, this.state.pos); out += this.jsxReadEntity(); chunkStart = this.state.pos; break; case 62: case 125: default: if (isNewLine(ch)) { out += this.input.slice(chunkStart, this.state.pos); out += this.jsxReadNewLine(true); chunkStart = this.state.pos; } else { ++this.state.pos; } } } } jsxReadNewLine(normalizeCRLF) { const ch = this.input.charCodeAt(this.state.pos); let out; ++this.state.pos; if (ch === 13 && this.input.charCodeAt(this.state.pos) === 10) { ++this.state.pos; out = normalizeCRLF ? "\n" : "\r\n"; } else { out = String.fromCharCode(ch); } ++this.state.curLine; this.state.lineStart = this.state.pos; return out; } jsxReadString(quote) { let out = ""; let chunkStart = ++this.state.pos; for (;;) { if (this.state.pos >= this.length) { throw this.raise(ErrorMessages.UnterminatedString, { at: this.state.startLoc }); } const ch = this.input.charCodeAt(this.state.pos); if (ch === quote) break; if (ch === 38) { out += this.input.slice(chunkStart, this.state.pos); out += this.jsxReadEntity(); chunkStart = this.state.pos; } else if (isNewLine(ch)) { out += this.input.slice(chunkStart, this.state.pos); out += this.jsxReadNewLine(false); chunkStart = this.state.pos; } else { ++this.state.pos; } } out += this.input.slice(chunkStart, this.state.pos++); return this.finishToken(129, out); } jsxReadEntity() { let str = ""; let count = 0; let entity; let ch = this.input[this.state.pos]; const startPos = ++this.state.pos; while (this.state.pos < this.length && count++ < 10) { ch = this.input[this.state.pos++]; if (ch === ";") { if (str[0] === "#") { if (str[1] === "x") { str = str.substr(2); if (HEX_NUMBER.test(str)) { entity = String.fromCodePoint(parseInt(str, 16)); } } else { str = str.substr(1); if (DECIMAL_NUMBER.test(str)) { entity = String.fromCodePoint(parseInt(str, 10)); } } } else { entity = entities[str]; } break; } str += ch; } if (!entity) { this.state.pos = startPos; return "&"; } return entity; } jsxReadWord() { let ch; const start = this.state.pos; do { ch = this.input.charCodeAt(++this.state.pos); } while (isIdentifierChar(ch) || ch === 45); return this.finishToken(136, this.input.slice(start, this.state.pos)); } jsxParseIdentifier() { const node = this.startNode(); if (this.match(136)) { node.name = this.state.value; } else if (tokenIsKeyword(this.state.type)) { node.name = tokenLabelName(this.state.type); } else { this.unexpected(); } this.next(); return this.finishNode(node, "JSXIdentifier"); } jsxParseNamespacedName() { const startPos = this.state.start; const startLoc = this.state.startLoc; const name = this.jsxParseIdentifier(); if (!this.eat(14)) return name; const node = this.startNodeAt(startPos, startLoc); node.namespace = name; node.name = this.jsxParseIdentifier(); return this.finishNode(node, "JSXNamespacedName"); } jsxParseElementName() { const startPos = this.state.start; const startLoc = this.state.startLoc; let node = this.jsxParseNamespacedName(); if (node.type === "JSXNamespacedName") { return node; } while (this.eat(16)) { const newNode = this.startNodeAt(startPos, startLoc); newNode.object = node; newNode.property = this.jsxParseIdentifier(); node = this.finishNode(newNode, "JSXMemberExpression"); } return node; } jsxParseAttributeValue() { let node; switch (this.state.type) { case 5: node = this.startNode(); this.setContext(types.brace); this.next(); node = this.jsxParseExpressionContainer(node, types.j_oTag); if (node.expression.type === "JSXEmptyExpression") { this.raise(JsxErrors.AttributeIsEmpty, { node }); } return node; case 138: case 129: return this.parseExprAtom(); default: throw this.raise(JsxErrors.UnsupportedJsxValue, { at: this.state.startLoc }); } } jsxParseEmptyExpression() { const node = this.startNodeAt(this.state.lastTokEndLoc.index, this.state.lastTokEndLoc); return this.finishNodeAt(node, "JSXEmptyExpression", this.state.startLoc); } jsxParseSpreadChild(node) { this.next(); node.expression = this.parseExpression(); this.setContext(types.j_oTag); this.expect(8); return this.finishNode(node, "JSXSpreadChild"); } jsxParseExpressionContainer(node, previousContext) { if (this.match(8)) { node.expression = this.jsxParseEmptyExpression(); } else { const expression = this.parseExpression(); node.expression = expression; } this.setContext(previousContext); this.expect(8); return this.finishNode(node, "JSXExpressionContainer"); } jsxParseAttribute() { const node = this.startNode(); if (this.match(5)) { this.setContext(types.brace); this.next(); this.expect(21); node.argument = this.parseMaybeAssignAllowIn(); this.setContext(types.j_oTag); this.expect(8); return this.finishNode(node, "JSXSpreadAttribute"); } node.name = this.jsxParseNamespacedName(); node.value = this.eat(29) ? this.jsxParseAttributeValue() : null; return this.finishNode(node, "JSXAttribute"); } jsxParseOpeningElementAt(startPos, startLoc) { const node = this.startNodeAt(startPos, startLoc); if (this.match(139)) { this.expect(139); return this.finishNode(node, "JSXOpeningFragment"); } node.name = this.jsxParseElementName(); return this.jsxParseOpeningElementAfterName(node); } jsxParseOpeningElementAfterName(node) { const attributes = []; while (!this.match(56) && !this.match(139)) { attributes.push(this.jsxParseAttribute()); } node.attributes = attributes; node.selfClosing = this.eat(56); this.expect(139); return this.finishNode(node, "JSXOpeningElement"); } jsxParseClosingElementAt(startPos, startLoc) { const node = this.startNodeAt(startPos, startLoc); if (this.match(139)) { this.expect(139); return this.finishNode(node, "JSXClosingFragment"); } node.name = this.jsxParseElementName(); this.expect(139); return this.finishNode(node, "JSXClosingElement"); } jsxParseElementAt(startPos, startLoc) { const node = this.startNodeAt(startPos, startLoc); const children = []; const openingElement = this.jsxParseOpeningElementAt(startPos, startLoc); let closingElement = null; if (!openingElement.selfClosing) { contents: for (;;) { switch (this.state.type) { case 138: startPos = this.state.start; startLoc = this.state.startLoc; this.next(); if (this.eat(56)) { closingElement = this.jsxParseClosingElementAt(startPos, startLoc); break contents; } children.push(this.jsxParseElementAt(startPos, startLoc)); break; case 137: children.push(this.parseExprAtom()); break; case 5: { const node = this.startNode(); this.setContext(types.brace); this.next(); if (this.match(21)) { children.push(this.jsxParseSpreadChild(node)); } else { children.push(this.jsxParseExpressionContainer(node, types.j_expr)); } break; } default: throw this.unexpected(); } } if (isFragment(openingElement) && !isFragment(closingElement) && closingElement !== null) { this.raise(JsxErrors.MissingClosingTagFragment, { node: closingElement }); } else if (!isFragment(openingElement) && isFragment(closingElement)) { this.raise(JsxErrors.MissingClosingTagElement, { node: closingElement }, getQualifiedJSXName(openingElement.name)); } else if (!isFragment(openingElement) && !isFragment(closingElement)) { if (getQualifiedJSXName(closingElement.name) !== getQualifiedJSXName(openingElement.name)) { this.raise(JsxErrors.MissingClosingTagElement, { node: closingElement }, getQualifiedJSXName(openingElement.name)); } } } if (isFragment(openingElement)) { node.openingFragment = openingElement; node.closingFragment = closingElement; } else { node.openingElement = openingElement; node.closingElement = closingElement; } node.children = children; if (this.match(47)) { throw this.raise(JsxErrors.UnwrappedAdjacentJSXElements, { at: this.state.startLoc }); } return isFragment(openingElement) ? this.finishNode(node, "JSXFragment") : this.finishNode(node, "JSXElement"); } jsxParseElement() { const startPos = this.state.start; const startLoc = this.state.startLoc; this.next(); return this.jsxParseElementAt(startPos, startLoc); } setContext(newContext) { const { context } = this.state; context[context.length - 1] = newContext; } parseExprAtom(refExpressionErrors) { if (this.match(137)) { return this.parseLiteral(this.state.value, "JSXText"); } else if (this.match(138)) { return this.jsxParseElement(); } else if (this.match(47) && this.input.charCodeAt(this.state.pos) !== 33) { this.replaceToken(138); return this.jsxParseElement(); } else { return super.parseExprAtom(refExpressionErrors); } } skipSpace() { const curContext = this.curContext(); if (!curContext.preserveSpace) super.skipSpace(); } getTokenFromCode(code) { const context = this.curContext(); if (context === types.j_expr) { return this.jsxReadToken(); } if (context === types.j_oTag || context === types.j_cTag) { if (isIdentifierStart(code)) { return this.jsxReadWord(); } if (code === 62) { ++this.state.pos; return this.finishToken(139); } if ((code === 34 || code === 39) && context === types.j_oTag) { return this.jsxReadString(code); } } if (code === 60 && this.state.canStartJSXElement && this.input.charCodeAt(this.state.pos + 1) !== 33) { ++this.state.pos; return this.finishToken(138); } return super.getTokenFromCode(code); } updateContext(prevType) { const { context, type } = this.state; if (type === 56 && prevType === 138) { context.splice(-2, 2, types.j_cTag); this.state.canStartJSXElement = false; } else if (type === 138) { context.push(types.j_oTag); } else if (type === 139) { const out = context[context.length - 1]; if (out === types.j_oTag && prevType === 56 || out === types.j_cTag) { context.pop(); this.state.canStartJSXElement = context[context.length - 1] === types.j_expr; } else { this.setContext(types.j_expr); this.state.canStartJSXElement = true; } } else { this.state.canStartJSXElement = tokenComesBeforeExpression(type); } } }); class TypeScriptScope extends Scope { constructor(...args) { super(...args); this.types = new Set(); this.enums = new Set(); this.constEnums = new Set(); this.classes = new Set(); this.exportOnlyBindings = new Set(); } } class TypeScriptScopeHandler extends ScopeHandler { createScope(flags) { return new TypeScriptScope(flags); } declareName(name, bindingType, loc) { const scope = this.currentScope(); if (bindingType & BIND_FLAGS_TS_EXPORT_ONLY) { this.maybeExportDefined(scope, name); scope.exportOnlyBindings.add(name); return; } super.declareName(...arguments); if (bindingType & BIND_KIND_TYPE) { if (!(bindingType & BIND_KIND_VALUE)) { this.checkRedeclarationInScope(scope, name, bindingType, loc); this.maybeExportDefined(scope, name); } scope.types.add(name); } if (bindingType & BIND_FLAGS_TS_ENUM) scope.enums.add(name); if (bindingType & BIND_FLAGS_TS_CONST_ENUM) scope.constEnums.add(name); if (bindingType & BIND_FLAGS_CLASS) scope.classes.add(name); } isRedeclaredInScope(scope, name, bindingType) { if (scope.enums.has(name)) { if (bindingType & BIND_FLAGS_TS_ENUM) { const isConst = !!(bindingType & BIND_FLAGS_TS_CONST_ENUM); const wasConst = scope.constEnums.has(name); return isConst !== wasConst; } return true; } if (bindingType & BIND_FLAGS_CLASS && scope.classes.has(name)) { if (scope.lexical.has(name)) { return !!(bindingType & BIND_KIND_VALUE); } else { return false; } } if (bindingType & BIND_KIND_TYPE && scope.types.has(name)) { return true; } return super.isRedeclaredInScope(...arguments); } checkLocalExport(id) { const topLevelScope = this.scopeStack[0]; const { name } = id; if (!topLevelScope.types.has(name) && !topLevelScope.exportOnlyBindings.has(name)) { super.checkLocalExport(id); } } } function nonNull(x) { if (x == null) { throw new Error(`Unexpected ${x} value.`); } return x; } function assert(x) { if (!x) { throw new Error("Assert fail"); } } const TSErrors = makeErrorTemplates({ AbstractMethodHasImplementation: "Method '%0' cannot have an implementation because it is marked abstract.", AbstractPropertyHasInitializer: "Property '%0' cannot have an initializer because it is marked abstract.", AccesorCannotDeclareThisParameter: "'get' and 'set' accessors cannot declare 'this' parameters.", AccesorCannotHaveTypeParameters: "An accessor cannot have type parameters.", ClassMethodHasDeclare: "Class methods cannot have the 'declare' modifier.", ClassMethodHasReadonly: "Class methods cannot have the 'readonly' modifier.", ConstructorHasTypeParameters: "Type parameters cannot appear on a constructor declaration.", DeclareAccessor: "'declare' is not allowed in %0ters.", DeclareClassFieldHasInitializer: "Initializers are not allowed in ambient contexts.", DeclareFunctionHasImplementation: "An implementation cannot be declared in ambient contexts.", DuplicateAccessibilityModifier: "Accessibility modifier already seen.", DuplicateModifier: "Duplicate modifier: '%0'.", EmptyHeritageClauseType: "'%0' list cannot be empty.", EmptyTypeArguments: "Type argument list cannot be empty.", EmptyTypeParameters: "Type parameter list cannot be empty.", ExpectedAmbientAfterExportDeclare: "'export declare' must be followed by an ambient declaration.", ImportAliasHasImportType: "An import alias can not use 'import type'.", IncompatibleModifiers: "'%0' modifier cannot be used with '%1' modifier.", IndexSignatureHasAbstract: "Index signatures cannot have the 'abstract' modifier.", IndexSignatureHasAccessibility: "Index signatures cannot have an accessibility modifier ('%0').", IndexSignatureHasDeclare: "Index signatures cannot have the 'declare' modifier.", IndexSignatureHasOverride: "'override' modifier cannot appear on an index signature.", IndexSignatureHasStatic: "Index signatures cannot have the 'static' modifier.", InvalidModifierOnTypeMember: "'%0' modifier cannot appear on a type member.", InvalidModifiersOrder: "'%0' modifier must precede '%1' modifier.", InvalidTupleMemberLabel: "Tuple members must be labeled with a simple identifier.", MissingInterfaceName: "'interface' declarations must be followed by an identifier.", MixedLabeledAndUnlabeledElements: "Tuple members must all have names or all not have names.", NonAbstractClassHasAbstractMethod: "Abstract methods can only appear within an abstract class.", NonClassMethodPropertyHasAbstractModifer: "'abstract' modifier can only appear on a class, method, or property declaration.", OptionalTypeBeforeRequired: "A required element cannot follow an optional element.", OverrideNotInSubClass: "This member cannot have an 'override' modifier because its containing class does not extend another class.", PatternIsOptional: "A binding pattern parameter cannot be optional in an implementation signature.", PrivateElementHasAbstract: "Private elements cannot have the 'abstract' modifier.", PrivateElementHasAccessibility: "Private elements cannot have an accessibility modifier ('%0').", ReadonlyForMethodSignature: "'readonly' modifier can only appear on a property declaration or index signature.", ReservedArrowTypeParam: "This syntax is reserved in files with the .mts or .cts extension. Add a trailing comma, as in `() => ...`.", ReservedTypeAssertion: "This syntax is reserved in files with the .mts or .cts extension. Use an `as` expression instead.", SetAccesorCannotHaveOptionalParameter: "A 'set' accessor cannot have an optional parameter.", SetAccesorCannotHaveRestParameter: "A 'set' accessor cannot have rest parameter.", SetAccesorCannotHaveReturnType: "A 'set' accessor cannot have a return type annotation.", StaticBlockCannotHaveModifier: "Static class blocks cannot have any modifier.", TypeAnnotationAfterAssign: "Type annotations must come before default assignments, e.g. instead of `age = 25: number` use `age: number = 25`.", TypeImportCannotSpecifyDefaultAndNamed: "A type-only import can specify a default import or named bindings, but not both.", TypeModifierIsUsedInTypeExports: "The 'type' modifier cannot be used on a named export when 'export type' is used on its export statement.", TypeModifierIsUsedInTypeImports: "The 'type' modifier cannot be used on a named import when 'import type' is used on its import statement.", UnexpectedParameterModifier: "A parameter property is only allowed in a constructor implementation.", UnexpectedReadonly: "'readonly' type modifier is only permitted on array and tuple literal types.", UnexpectedTypeAnnotation: "Did not expect a type annotation here.", UnexpectedTypeCastInParameter: "Unexpected type cast in parameter position.", UnsupportedImportTypeArgument: "Argument in a type import must be a string literal.", UnsupportedParameterPropertyKind: "A parameter property may not be declared using a binding pattern.", UnsupportedSignatureParameterKind: "Name in a signature must be an Identifier, ObjectPattern or ArrayPattern, instead got %0." }, ErrorCodes.SyntaxError, "typescript"); function keywordTypeFromName(value) { switch (value) { case "any": return "TSAnyKeyword"; case "boolean": return "TSBooleanKeyword"; case "bigint": return "TSBigIntKeyword"; case "never": return "TSNeverKeyword"; case "number": return "TSNumberKeyword"; case "object": return "TSObjectKeyword"; case "string": return "TSStringKeyword"; case "symbol": return "TSSymbolKeyword"; case "undefined": return "TSUndefinedKeyword"; case "unknown": return "TSUnknownKeyword"; default: return undefined; } } function tsIsAccessModifier(modifier) { return modifier === "private" || modifier === "public" || modifier === "protected"; } var typescript = (superClass => class extends superClass { getScopeHandler() { return TypeScriptScopeHandler; } tsIsIdentifier() { return tokenIsIdentifier(this.state.type); } tsTokenCanFollowModifier() { return (this.match(0) || this.match(5) || this.match(55) || this.match(21) || this.match(134) || this.isLiteralPropertyName()) && !this.hasPrecedingLineBreak(); } tsNextTokenCanFollowModifier() { this.next(); return this.tsTokenCanFollowModifier(); } tsParseModifier(allowedModifiers, stopOnStartOfClassStaticBlock) { if (!tokenIsIdentifier(this.state.type)) { return undefined; } const modifier = this.state.value; if (allowedModifiers.indexOf(modifier) !== -1) { if (stopOnStartOfClassStaticBlock && this.tsIsStartOfStaticBlocks()) { return undefined; } if (this.tsTryParse(this.tsNextTokenCanFollowModifier.bind(this))) { return modifier; } } return undefined; } tsParseModifiers(modified, allowedModifiers, disallowedModifiers, errorTemplate, stopOnStartOfClassStaticBlock) { const enforceOrder = (loc, modifier, before, after) => { if (modifier === before && modified[after]) { this.raise(TSErrors.InvalidModifiersOrder, { at: loc }, before, after); } }; const incompatible = (loc, modifier, mod1, mod2) => { if (modified[mod1] && modifier === mod2 || modified[mod2] && modifier === mod1) { this.raise(TSErrors.IncompatibleModifiers, { at: loc }, mod1, mod2); } }; for (;;) { const { startLoc } = this.state; const modifier = this.tsParseModifier(allowedModifiers.concat(disallowedModifiers != null ? disallowedModifiers : []), stopOnStartOfClassStaticBlock); if (!modifier) break; if (tsIsAccessModifier(modifier)) { if (modified.accessibility) { this.raise(TSErrors.DuplicateAccessibilityModifier, { at: startLoc }); } else { enforceOrder(startLoc, modifier, modifier, "override"); enforceOrder(startLoc, modifier, modifier, "static"); enforceOrder(startLoc, modifier, modifier, "readonly"); modified.accessibility = modifier; } } else { if (Object.hasOwnProperty.call(modified, modifier)) { this.raise(TSErrors.DuplicateModifier, { at: startLoc }, modifier); } else { enforceOrder(startLoc, modifier, "static", "readonly"); enforceOrder(startLoc, modifier, "static", "override"); enforceOrder(startLoc, modifier, "override", "readonly"); enforceOrder(startLoc, modifier, "abstract", "override"); incompatible(startLoc, modifier, "declare", "override"); incompatible(startLoc, modifier, "static", "abstract"); } modified[modifier] = true; } if (disallowedModifiers != null && disallowedModifiers.includes(modifier)) { this.raise(errorTemplate, { at: startLoc }, modifier); } } } tsIsListTerminator(kind) { switch (kind) { case "EnumMembers": case "TypeMembers": return this.match(8); case "HeritageClauseElement": return this.match(5); case "TupleElementTypes": return this.match(3); case "TypeParametersOrArguments": return this.match(48); } throw new Error("Unreachable"); } tsParseList(kind, parseElement) { const result = []; while (!this.tsIsListTerminator(kind)) { result.push(parseElement()); } return result; } tsParseDelimitedList(kind, parseElement, refTrailingCommaPos) { return nonNull(this.tsParseDelimitedListWorker(kind, parseElement, true, refTrailingCommaPos)); } tsParseDelimitedListWorker(kind, parseElement, expectSuccess, refTrailingCommaPos) { const result = []; let trailingCommaPos = -1; for (;;) { if (this.tsIsListTerminator(kind)) { break; } trailingCommaPos = -1; const element = parseElement(); if (element == null) { return undefined; } result.push(element); if (this.eat(12)) { trailingCommaPos = this.state.lastTokStart; continue; } if (this.tsIsListTerminator(kind)) { break; } if (expectSuccess) { this.expect(12); } return undefined; } if (refTrailingCommaPos) { refTrailingCommaPos.value = trailingCommaPos; } return result; } tsParseBracketedList(kind, parseElement, bracket, skipFirstToken, refTrailingCommaPos) { if (!skipFirstToken) { if (bracket) { this.expect(0); } else { this.expect(47); } } const result = this.tsParseDelimitedList(kind, parseElement, refTrailingCommaPos); if (bracket) { this.expect(3); } else { this.expect(48); } return result; } tsParseImportType() { const node = this.startNode(); this.expect(83); this.expect(10); if (!this.match(129)) { this.raise(TSErrors.UnsupportedImportTypeArgument, { at: this.state.startLoc }); } node.argument = this.parseExprAtom(); this.expect(11); if (this.eat(16)) { node.qualifier = this.tsParseEntityName(true); } if (this.match(47)) { node.typeParameters = this.tsParseTypeArguments(); } return this.finishNode(node, "TSImportType"); } tsParseEntityName(allowReservedWords) { let entity = this.parseIdentifier(); while (this.eat(16)) { const node = this.startNodeAtNode(entity); node.left = entity; node.right = this.parseIdentifier(allowReservedWords); entity = this.finishNode(node, "TSQualifiedName"); } return entity; } tsParseTypeReference() { const node = this.startNode(); node.typeName = this.tsParseEntityName(false); if (!this.hasPrecedingLineBreak() && this.match(47)) { node.typeParameters = this.tsParseTypeArguments(); } return this.finishNode(node, "TSTypeReference"); } tsParseThisTypePredicate(lhs) { this.next(); const node = this.startNodeAtNode(lhs); node.parameterName = lhs; node.typeAnnotation = this.tsParseTypeAnnotation(false); node.asserts = false; return this.finishNode(node, "TSTypePredicate"); } tsParseThisTypeNode() { const node = this.startNode(); this.next(); return this.finishNode(node, "TSThisType"); } tsParseTypeQuery() { const node = this.startNode(); this.expect(87); if (this.match(83)) { node.exprName = this.tsParseImportType(); } else { node.exprName = this.tsParseEntityName(true); } return this.finishNode(node, "TSTypeQuery"); } tsParseTypeParameter() { const node = this.startNode(); node.name = this.tsParseTypeParameterName(); node.constraint = this.tsEatThenParseType(81); node.default = this.tsEatThenParseType(29); return this.finishNode(node, "TSTypeParameter"); } tsTryParseTypeParameters() { if (this.match(47)) { return this.tsParseTypeParameters(); } } tsParseTypeParameters() { const node = this.startNode(); if (this.match(47) || this.match(138)) { this.next(); } else { this.unexpected(); } const refTrailingCommaPos = { value: -1 }; node.params = this.tsParseBracketedList("TypeParametersOrArguments", this.tsParseTypeParameter.bind(this), false, true, refTrailingCommaPos); if (node.params.length === 0) { this.raise(TSErrors.EmptyTypeParameters, { node }); } if (refTrailingCommaPos.value !== -1) { this.addExtra(node, "trailingComma", refTrailingCommaPos.value); } return this.finishNode(node, "TSTypeParameterDeclaration"); } tsTryNextParseConstantContext() { if (this.lookahead().type === 75) { this.next(); return this.tsParseTypeReference(); } return null; } tsFillSignature(returnToken, signature) { const returnTokenRequired = returnToken === 19; const paramsKey = "parameters"; const returnTypeKey = "typeAnnotation"; signature.typeParameters = this.tsTryParseTypeParameters(); this.expect(10); signature[paramsKey] = this.tsParseBindingListForSignature(); if (returnTokenRequired) { signature[returnTypeKey] = this.tsParseTypeOrTypePredicateAnnotation(returnToken); } else if (this.match(returnToken)) { signature[returnTypeKey] = this.tsParseTypeOrTypePredicateAnnotation(returnToken); } } tsParseBindingListForSignature() { return this.parseBindingList(11, 41).map(pattern => { if (pattern.type !== "Identifier" && pattern.type !== "RestElement" && pattern.type !== "ObjectPattern" && pattern.type !== "ArrayPattern") { this.raise(TSErrors.UnsupportedSignatureParameterKind, { node: pattern }, pattern.type); } return pattern; }); } tsParseTypeMemberSemicolon() { if (!this.eat(12) && !this.isLineTerminator()) { this.expect(13); } } tsParseSignatureMember(kind, node) { this.tsFillSignature(14, node); this.tsParseTypeMemberSemicolon(); return this.finishNode(node, kind); } tsIsUnambiguouslyIndexSignature() { this.next(); if (tokenIsIdentifier(this.state.type)) { this.next(); return this.match(14); } return false; } tsTryParseIndexSignature(node) { if (!(this.match(0) && this.tsLookAhead(this.tsIsUnambiguouslyIndexSignature.bind(this)))) { return undefined; } this.expect(0); const id = this.parseIdentifier(); id.typeAnnotation = this.tsParseTypeAnnotation(); this.resetEndLocation(id); this.expect(3); node.parameters = [id]; const type = this.tsTryParseTypeAnnotation(); if (type) node.typeAnnotation = type; this.tsParseTypeMemberSemicolon(); return this.finishNode(node, "TSIndexSignature"); } tsParsePropertyOrMethodSignature(node, readonly) { if (this.eat(17)) node.optional = true; const nodeAny = node; if (this.match(10) || this.match(47)) { if (readonly) { this.raise(TSErrors.ReadonlyForMethodSignature, { node }); } const method = nodeAny; if (method.kind && this.match(47)) { this.raise(TSErrors.AccesorCannotHaveTypeParameters, { at: this.state.curPosition() }); } this.tsFillSignature(14, method); this.tsParseTypeMemberSemicolon(); const paramsKey = "parameters"; const returnTypeKey = "typeAnnotation"; if (method.kind === "get") { if (method[paramsKey].length > 0) { this.raise(ErrorMessages.BadGetterArity, { at: this.state.curPosition() }); if (this.isThisParam(method[paramsKey][0])) { this.raise(TSErrors.AccesorCannotDeclareThisParameter, { at: this.state.curPosition() }); } } } else if (method.kind === "set") { if (method[paramsKey].length !== 1) { this.raise(ErrorMessages.BadSetterArity, { at: this.state.curPosition() }); } else { const firstParameter = method[paramsKey][0]; if (this.isThisParam(firstParameter)) { this.raise(TSErrors.AccesorCannotDeclareThisParameter, { at: this.state.curPosition() }); } if (firstParameter.type === "Identifier" && firstParameter.optional) { this.raise(TSErrors.SetAccesorCannotHaveOptionalParameter, { at: this.state.curPosition() }); } if (firstParameter.type === "RestElement") { this.raise(TSErrors.SetAccesorCannotHaveRestParameter, { at: this.state.curPosition() }); } } if (method[returnTypeKey]) { this.raise(TSErrors.SetAccesorCannotHaveReturnType, { node: method[returnTypeKey] }); } } else { method.kind = "method"; } return this.finishNode(method, "TSMethodSignature"); } else { const property = nodeAny; if (readonly) property.readonly = true; const type = this.tsTryParseTypeAnnotation(); if (type) property.typeAnnotation = type; this.tsParseTypeMemberSemicolon(); return this.finishNode(property, "TSPropertySignature"); } } tsParseTypeMember() { const node = this.startNode(); if (this.match(10) || this.match(47)) { return this.tsParseSignatureMember("TSCallSignatureDeclaration", node); } if (this.match(77)) { const id = this.startNode(); this.next(); if (this.match(10) || this.match(47)) { return this.tsParseSignatureMember("TSConstructSignatureDeclaration", node); } else { node.key = this.createIdentifier(id, "new"); return this.tsParsePropertyOrMethodSignature(node, false); } } this.tsParseModifiers(node, ["readonly"], ["declare", "abstract", "private", "protected", "public", "static", "override"], TSErrors.InvalidModifierOnTypeMember); const idx = this.tsTryParseIndexSignature(node); if (idx) { return idx; } this.parsePropertyName(node); if (!node.computed && node.key.type === "Identifier" && (node.key.name === "get" || node.key.name === "set") && this.tsTokenCanFollowModifier()) { node.kind = node.key.name; this.parsePropertyName(node); } return this.tsParsePropertyOrMethodSignature(node, !!node.readonly); } tsParseTypeLiteral() { const node = this.startNode(); node.members = this.tsParseObjectTypeMembers(); return this.finishNode(node, "TSTypeLiteral"); } tsParseObjectTypeMembers() { this.expect(5); const members = this.tsParseList("TypeMembers", this.tsParseTypeMember.bind(this)); this.expect(8); return members; } tsIsStartOfMappedType() { this.next(); if (this.eat(53)) { return this.isContextual(118); } if (this.isContextual(118)) { this.next(); } if (!this.match(0)) { return false; } this.next(); if (!this.tsIsIdentifier()) { return false; } this.next(); return this.match(58); } tsParseMappedTypeParameter() { const node = this.startNode(); node.name = this.tsParseTypeParameterName(); node.constraint = this.tsExpectThenParseType(58); return this.finishNode(node, "TSTypeParameter"); } tsParseMappedType() { const node = this.startNode(); this.expect(5); if (this.match(53)) { node.readonly = this.state.value; this.next(); this.expectContextual(118); } else if (this.eatContextual(118)) { node.readonly = true; } this.expect(0); node.typeParameter = this.tsParseMappedTypeParameter(); node.nameType = this.eatContextual(93) ? this.tsParseType() : null; this.expect(3); if (this.match(53)) { node.optional = this.state.value; this.next(); this.expect(17); } else if (this.eat(17)) { node.optional = true; } node.typeAnnotation = this.tsTryParseType(); this.semicolon(); this.expect(8); return this.finishNode(node, "TSMappedType"); } tsParseTupleType() { const node = this.startNode(); node.elementTypes = this.tsParseBracketedList("TupleElementTypes", this.tsParseTupleElementType.bind(this), true, false); let seenOptionalElement = false; let labeledElements = null; node.elementTypes.forEach(elementNode => { var _labeledElements; let { type } = elementNode; if (seenOptionalElement && type !== "TSRestType" && type !== "TSOptionalType" && !(type === "TSNamedTupleMember" && elementNode.optional)) { this.raise(TSErrors.OptionalTypeBeforeRequired, { node: elementNode }); } seenOptionalElement = seenOptionalElement || type === "TSNamedTupleMember" && elementNode.optional || type === "TSOptionalType"; if (type === "TSRestType") { elementNode = elementNode.typeAnnotation; type = elementNode.type; } const isLabeled = type === "TSNamedTupleMember"; labeledElements = (_labeledElements = labeledElements) != null ? _labeledElements : isLabeled; if (labeledElements !== isLabeled) { this.raise(TSErrors.MixedLabeledAndUnlabeledElements, { node: elementNode }); } }); return this.finishNode(node, "TSTupleType"); } tsParseTupleElementType() { const { start: startPos, startLoc } = this.state; const rest = this.eat(21); let type = this.tsParseType(); const optional = this.eat(17); const labeled = this.eat(14); if (labeled) { const labeledNode = this.startNodeAtNode(type); labeledNode.optional = optional; if (type.type === "TSTypeReference" && !type.typeParameters && type.typeName.type === "Identifier") { labeledNode.label = type.typeName; } else { this.raise(TSErrors.InvalidTupleMemberLabel, { node: type }); labeledNode.label = type; } labeledNode.elementType = this.tsParseType(); type = this.finishNode(labeledNode, "TSNamedTupleMember"); } else if (optional) { const optionalTypeNode = this.startNodeAtNode(type); optionalTypeNode.typeAnnotation = type; type = this.finishNode(optionalTypeNode, "TSOptionalType"); } if (rest) { const restNode = this.startNodeAt(startPos, startLoc); restNode.typeAnnotation = type; type = this.finishNode(restNode, "TSRestType"); } return type; } tsParseParenthesizedType() { const node = this.startNode(); this.expect(10); node.typeAnnotation = this.tsParseType(); this.expect(11); return this.finishNode(node, "TSParenthesizedType"); } tsParseFunctionOrConstructorType(type, abstract) { const node = this.startNode(); if (type === "TSConstructorType") { node.abstract = !!abstract; if (abstract) this.next(); this.next(); } this.tsFillSignature(19, node); return this.finishNode(node, type); } tsParseLiteralTypeNode() { const node = this.startNode(); node.literal = (() => { switch (this.state.type) { case 130: case 131: case 129: case 85: case 86: return this.parseExprAtom(); default: throw this.unexpected(); } })(); return this.finishNode(node, "TSLiteralType"); } tsParseTemplateLiteralType() { const node = this.startNode(); node.literal = this.parseTemplate(false); return this.finishNode(node, "TSLiteralType"); } parseTemplateSubstitution() { if (this.state.inType) return this.tsParseType(); return super.parseTemplateSubstitution(); } tsParseThisTypeOrThisTypePredicate() { const thisKeyword = this.tsParseThisTypeNode(); if (this.isContextual(113) && !this.hasPrecedingLineBreak()) { return this.tsParseThisTypePredicate(thisKeyword); } else { return thisKeyword; } } tsParseNonArrayType() { switch (this.state.type) { case 129: case 130: case 131: case 85: case 86: return this.tsParseLiteralTypeNode(); case 53: if (this.state.value === "-") { const node = this.startNode(); const nextToken = this.lookahead(); if (nextToken.type !== 130 && nextToken.type !== 131) { throw this.unexpected(); } node.literal = this.parseMaybeUnary(); return this.finishNode(node, "TSLiteralType"); } break; case 78: return this.tsParseThisTypeOrThisTypePredicate(); case 87: return this.tsParseTypeQuery(); case 83: return this.tsParseImportType(); case 5: return this.tsLookAhead(this.tsIsStartOfMappedType.bind(this)) ? this.tsParseMappedType() : this.tsParseTypeLiteral(); case 0: return this.tsParseTupleType(); case 10: return this.tsParseParenthesizedType(); case 25: case 24: return this.tsParseTemplateLiteralType(); default: { const { type } = this.state; if (tokenIsIdentifier(type) || type === 88 || type === 84) { const nodeType = type === 88 ? "TSVoidKeyword" : type === 84 ? "TSNullKeyword" : keywordTypeFromName(this.state.value); if (nodeType !== undefined && this.lookaheadCharCode() !== 46) { const node = this.startNode(); this.next(); return this.finishNode(node, nodeType); } return this.tsParseTypeReference(); } } } throw this.unexpected(); } tsParseArrayTypeOrHigher() { let type = this.tsParseNonArrayType(); while (!this.hasPrecedingLineBreak() && this.eat(0)) { if (this.match(3)) { const node = this.startNodeAtNode(type); node.elementType = type; this.expect(3); type = this.finishNode(node, "TSArrayType"); } else { const node = this.startNodeAtNode(type); node.objectType = type; node.indexType = this.tsParseType(); this.expect(3); type = this.finishNode(node, "TSIndexedAccessType"); } } return type; } tsParseTypeOperator() { const node = this.startNode(); const operator = this.state.value; this.next(); node.operator = operator; node.typeAnnotation = this.tsParseTypeOperatorOrHigher(); if (operator === "readonly") { this.tsCheckTypeAnnotationForReadOnly(node); } return this.finishNode(node, "TSTypeOperator"); } tsCheckTypeAnnotationForReadOnly(node) { switch (node.typeAnnotation.type) { case "TSTupleType": case "TSArrayType": return; default: this.raise(TSErrors.UnexpectedReadonly, { node }); } } tsParseInferType() { const node = this.startNode(); this.expectContextual(112); const typeParameter = this.startNode(); typeParameter.name = this.tsParseTypeParameterName(); node.typeParameter = this.finishNode(typeParameter, "TSTypeParameter"); return this.finishNode(node, "TSInferType"); } tsParseTypeOperatorOrHigher() { const isTypeOperator = tokenIsTSTypeOperator(this.state.type) && !this.state.containsEsc; return isTypeOperator ? this.tsParseTypeOperator() : this.isContextual(112) ? this.tsParseInferType() : this.tsParseArrayTypeOrHigher(); } tsParseUnionOrIntersectionType(kind, parseConstituentType, operator) { const node = this.startNode(); const hasLeadingOperator = this.eat(operator); const types = []; do { types.push(parseConstituentType()); } while (this.eat(operator)); if (types.length === 1 && !hasLeadingOperator) { return types[0]; } node.types = types; return this.finishNode(node, kind); } tsParseIntersectionTypeOrHigher() { return this.tsParseUnionOrIntersectionType("TSIntersectionType", this.tsParseTypeOperatorOrHigher.bind(this), 45); } tsParseUnionTypeOrHigher() { return this.tsParseUnionOrIntersectionType("TSUnionType", this.tsParseIntersectionTypeOrHigher.bind(this), 43); } tsIsStartOfFunctionType() { if (this.match(47)) { return true; } return this.match(10) && this.tsLookAhead(this.tsIsUnambiguouslyStartOfFunctionType.bind(this)); } tsSkipParameterStart() { if (tokenIsIdentifier(this.state.type) || this.match(78)) { this.next(); return true; } if (this.match(5)) { let braceStackCounter = 1; this.next(); while (braceStackCounter > 0) { if (this.match(5)) { ++braceStackCounter; } else if (this.match(8)) { --braceStackCounter; } this.next(); } return true; } if (this.match(0)) { let braceStackCounter = 1; this.next(); while (braceStackCounter > 0) { if (this.match(0)) { ++braceStackCounter; } else if (this.match(3)) { --braceStackCounter; } this.next(); } return true; } return false; } tsIsUnambiguouslyStartOfFunctionType() { this.next(); if (this.match(11) || this.match(21)) { return true; } if (this.tsSkipParameterStart()) { if (this.match(14) || this.match(12) || this.match(17) || this.match(29)) { return true; } if (this.match(11)) { this.next(); if (this.match(19)) { return true; } } } return false; } tsParseTypeOrTypePredicateAnnotation(returnToken) { return this.tsInType(() => { const t = this.startNode(); this.expect(returnToken); const node = this.startNode(); const asserts = !!this.tsTryParse(this.tsParseTypePredicateAsserts.bind(this)); if (asserts && this.match(78)) { let thisTypePredicate = this.tsParseThisTypeOrThisTypePredicate(); if (thisTypePredicate.type === "TSThisType") { node.parameterName = thisTypePredicate; node.asserts = true; node.typeAnnotation = null; thisTypePredicate = this.finishNode(node, "TSTypePredicate"); } else { this.resetStartLocationFromNode(thisTypePredicate, node); thisTypePredicate.asserts = true; } t.typeAnnotation = thisTypePredicate; return this.finishNode(t, "TSTypeAnnotation"); } const typePredicateVariable = this.tsIsIdentifier() && this.tsTryParse(this.tsParseTypePredicatePrefix.bind(this)); if (!typePredicateVariable) { if (!asserts) { return this.tsParseTypeAnnotation(false, t); } node.parameterName = this.parseIdentifier(); node.asserts = asserts; node.typeAnnotation = null; t.typeAnnotation = this.finishNode(node, "TSTypePredicate"); return this.finishNode(t, "TSTypeAnnotation"); } const type = this.tsParseTypeAnnotation(false); node.parameterName = typePredicateVariable; node.typeAnnotation = type; node.asserts = asserts; t.typeAnnotation = this.finishNode(node, "TSTypePredicate"); return this.finishNode(t, "TSTypeAnnotation"); }); } tsTryParseTypeOrTypePredicateAnnotation() { return this.match(14) ? this.tsParseTypeOrTypePredicateAnnotation(14) : undefined; } tsTryParseTypeAnnotation() { return this.match(14) ? this.tsParseTypeAnnotation() : undefined; } tsTryParseType() { return this.tsEatThenParseType(14); } tsParseTypePredicatePrefix() { const id = this.parseIdentifier(); if (this.isContextual(113) && !this.hasPrecedingLineBreak()) { this.next(); return id; } } tsParseTypePredicateAsserts() { if (this.state.type !== 106) { return false; } const containsEsc = this.state.containsEsc; this.next(); if (!tokenIsIdentifier(this.state.type) && !this.match(78)) { return false; } if (containsEsc) { this.raise(ErrorMessages.InvalidEscapedReservedWord, { at: this.state.lastTokStartLoc }, "asserts"); } return true; } tsParseTypeAnnotation(eatColon = true, t = this.startNode()) { this.tsInType(() => { if (eatColon) this.expect(14); t.typeAnnotation = this.tsParseType(); }); return this.finishNode(t, "TSTypeAnnotation"); } tsParseType() { assert(this.state.inType); const type = this.tsParseNonConditionalType(); if (this.hasPrecedingLineBreak() || !this.eat(81)) { return type; } const node = this.startNodeAtNode(type); node.checkType = type; node.extendsType = this.tsParseNonConditionalType(); this.expect(17); node.trueType = this.tsParseType(); this.expect(14); node.falseType = this.tsParseType(); return this.finishNode(node, "TSConditionalType"); } isAbstractConstructorSignature() { return this.isContextual(120) && this.lookahead().type === 77; } tsParseNonConditionalType() { if (this.tsIsStartOfFunctionType()) { return this.tsParseFunctionOrConstructorType("TSFunctionType"); } if (this.match(77)) { return this.tsParseFunctionOrConstructorType("TSConstructorType"); } else if (this.isAbstractConstructorSignature()) { return this.tsParseFunctionOrConstructorType("TSConstructorType", true); } return this.tsParseUnionTypeOrHigher(); } tsParseTypeAssertion() { if (this.getPluginOption("typescript", "disallowAmbiguousJSXLike")) { this.raise(TSErrors.ReservedTypeAssertion, { at: this.state.startLoc }); } const node = this.startNode(); const _const = this.tsTryNextParseConstantContext(); node.typeAnnotation = _const || this.tsNextThenParseType(); this.expect(48); node.expression = this.parseMaybeUnary(); return this.finishNode(node, "TSTypeAssertion"); } tsParseHeritageClause(descriptor) { const originalStartLoc = this.state.startLoc; const delimitedList = this.tsParseDelimitedList("HeritageClauseElement", this.tsParseExpressionWithTypeArguments.bind(this)); if (!delimitedList.length) { this.raise(TSErrors.EmptyHeritageClauseType, { at: originalStartLoc }, descriptor); } return delimitedList; } tsParseExpressionWithTypeArguments() { const node = this.startNode(); node.expression = this.tsParseEntityName(false); if (this.match(47)) { node.typeParameters = this.tsParseTypeArguments(); } return this.finishNode(node, "TSExpressionWithTypeArguments"); } tsParseInterfaceDeclaration(node) { if (tokenIsIdentifier(this.state.type)) { node.id = this.parseIdentifier(); this.checkLVal(node.id, "typescript interface declaration", BIND_TS_INTERFACE); } else { node.id = null; this.raise(TSErrors.MissingInterfaceName, { at: this.state.startLoc }); } node.typeParameters = this.tsTryParseTypeParameters(); if (this.eat(81)) { node.extends = this.tsParseHeritageClause("extends"); } const body = this.startNode(); body.body = this.tsInType(this.tsParseObjectTypeMembers.bind(this)); node.body = this.finishNode(body, "TSInterfaceBody"); return this.finishNode(node, "TSInterfaceDeclaration"); } tsParseTypeAliasDeclaration(node) { node.id = this.parseIdentifier(); this.checkLVal(node.id, "typescript type alias", BIND_TS_TYPE); node.typeParameters = this.tsTryParseTypeParameters(); node.typeAnnotation = this.tsInType(() => { this.expect(29); if (this.isContextual(111) && this.lookahead().type !== 16) { const node = this.startNode(); this.next(); return this.finishNode(node, "TSIntrinsicKeyword"); } return this.tsParseType(); }); this.semicolon(); return this.finishNode(node, "TSTypeAliasDeclaration"); } tsInNoContext(cb) { const oldContext = this.state.context; this.state.context = [oldContext[0]]; try { return cb(); } finally { this.state.context = oldContext; } } tsInType(cb) { const oldInType = this.state.inType; this.state.inType = true; try { return cb(); } finally { this.state.inType = oldInType; } } tsEatThenParseType(token) { return !this.match(token) ? undefined : this.tsNextThenParseType(); } tsExpectThenParseType(token) { return this.tsDoThenParseType(() => this.expect(token)); } tsNextThenParseType() { return this.tsDoThenParseType(() => this.next()); } tsDoThenParseType(cb) { return this.tsInType(() => { cb(); return this.tsParseType(); }); } tsParseEnumMember() { const node = this.startNode(); node.id = this.match(129) ? this.parseExprAtom() : this.parseIdentifier(true); if (this.eat(29)) { node.initializer = this.parseMaybeAssignAllowIn(); } return this.finishNode(node, "TSEnumMember"); } tsParseEnumDeclaration(node, isConst) { if (isConst) node.const = true; node.id = this.parseIdentifier(); this.checkLVal(node.id, "typescript enum declaration", isConst ? BIND_TS_CONST_ENUM : BIND_TS_ENUM); this.expect(5); node.members = this.tsParseDelimitedList("EnumMembers", this.tsParseEnumMember.bind(this)); this.expect(8); return this.finishNode(node, "TSEnumDeclaration"); } tsParseModuleBlock() { const node = this.startNode(); this.scope.enter(SCOPE_OTHER); this.expect(5); this.parseBlockOrModuleBlockBody(node.body = [], undefined, true, 8); this.scope.exit(); return this.finishNode(node, "TSModuleBlock"); } tsParseModuleOrNamespaceDeclaration(node, nested = false) { node.id = this.parseIdentifier(); if (!nested) { this.checkLVal(node.id, "module or namespace declaration", BIND_TS_NAMESPACE); } if (this.eat(16)) { const inner = this.startNode(); this.tsParseModuleOrNamespaceDeclaration(inner, true); node.body = inner; } else { this.scope.enter(SCOPE_TS_MODULE); this.prodParam.enter(PARAM); node.body = this.tsParseModuleBlock(); this.prodParam.exit(); this.scope.exit(); } return this.finishNode(node, "TSModuleDeclaration"); } tsParseAmbientExternalModuleDeclaration(node) { if (this.isContextual(109)) { node.global = true; node.id = this.parseIdentifier(); } else if (this.match(129)) { node.id = this.parseExprAtom(); } else { this.unexpected(); } if (this.match(5)) { this.scope.enter(SCOPE_TS_MODULE); this.prodParam.enter(PARAM); node.body = this.tsParseModuleBlock(); this.prodParam.exit(); this.scope.exit(); } else { this.semicolon(); } return this.finishNode(node, "TSModuleDeclaration"); } tsParseImportEqualsDeclaration(node, isExport) { node.isExport = isExport || false; node.id = this.parseIdentifier(); this.checkLVal(node.id, "import equals declaration", BIND_LEXICAL); this.expect(29); const moduleReference = this.tsParseModuleReference(); if (node.importKind === "type" && moduleReference.type !== "TSExternalModuleReference") { this.raise(TSErrors.ImportAliasHasImportType, { node: moduleReference }); } node.moduleReference = moduleReference; this.semicolon(); return this.finishNode(node, "TSImportEqualsDeclaration"); } tsIsExternalModuleReference() { return this.isContextual(116) && this.lookaheadCharCode() === 40; } tsParseModuleReference() { return this.tsIsExternalModuleReference() ? this.tsParseExternalModuleReference() : this.tsParseEntityName(false); } tsParseExternalModuleReference() { const node = this.startNode(); this.expectContextual(116); this.expect(10); if (!this.match(129)) { throw this.unexpected(); } node.expression = this.parseExprAtom(); this.expect(11); return this.finishNode(node, "TSExternalModuleReference"); } tsLookAhead(f) { const state = this.state.clone(); const res = f(); this.state = state; return res; } tsTryParseAndCatch(f) { const result = this.tryParse(abort => f() || abort()); if (result.aborted || !result.node) return undefined; if (result.error) this.state = result.failState; return result.node; } tsTryParse(f) { const state = this.state.clone(); const result = f(); if (result !== undefined && result !== false) { return result; } else { this.state = state; return undefined; } } tsTryParseDeclare(nany) { if (this.isLineTerminator()) { return; } let starttype = this.state.type; let kind; if (this.isContextual(99)) { starttype = 74; kind = "let"; } return this.tsInAmbientContext(() => { switch (starttype) { case 68: nany.declare = true; return this.parseFunctionStatement(nany, false, true); case 80: nany.declare = true; return this.parseClass(nany, true, false); case 75: if (this.match(75) && this.isLookaheadContextual("enum")) { this.expect(75); this.expectContextual(122); return this.tsParseEnumDeclaration(nany, true); } case 74: kind = kind || this.state.value; return this.parseVarStatement(nany, kind); case 109: return this.tsParseAmbientExternalModuleDeclaration(nany); default: { if (tokenIsIdentifier(starttype)) { return this.tsParseDeclaration(nany, this.state.value, true); } } } }); } tsTryParseExportDeclaration() { return this.tsParseDeclaration(this.startNode(), this.state.value, true); } tsParseExpressionStatement(node, expr) { switch (expr.name) { case "declare": { const declaration = this.tsTryParseDeclare(node); if (declaration) { declaration.declare = true; return declaration; } break; } case "global": if (this.match(5)) { this.scope.enter(SCOPE_TS_MODULE); this.prodParam.enter(PARAM); const mod = node; mod.global = true; mod.id = expr; mod.body = this.tsParseModuleBlock(); this.scope.exit(); this.prodParam.exit(); return this.finishNode(mod, "TSModuleDeclaration"); } break; default: return this.tsParseDeclaration(node, expr.name, false); } } tsParseDeclaration(node, value, next) { switch (value) { case "abstract": if (this.tsCheckLineTerminator(next) && (this.match(80) || tokenIsIdentifier(this.state.type))) { return this.tsParseAbstractDeclaration(node); } break; case "enum": if (next || tokenIsIdentifier(this.state.type)) { if (next) this.next(); return this.tsParseEnumDeclaration(node, false); } break; case "interface": if (this.tsCheckLineTerminator(next) && tokenIsIdentifier(this.state.type)) { return this.tsParseInterfaceDeclaration(node); } break; case "module": if (this.tsCheckLineTerminator(next)) { if (this.match(129)) { return this.tsParseAmbientExternalModuleDeclaration(node); } else if (tokenIsIdentifier(this.state.type)) { return this.tsParseModuleOrNamespaceDeclaration(node); } } break; case "namespace": if (this.tsCheckLineTerminator(next) && tokenIsIdentifier(this.state.type)) { return this.tsParseModuleOrNamespaceDeclaration(node); } break; case "type": if (this.tsCheckLineTerminator(next) && tokenIsIdentifier(this.state.type)) { return this.tsParseTypeAliasDeclaration(node); } break; } } tsCheckLineTerminator(next) { if (next) { if (this.hasFollowingLineBreak()) return false; this.next(); return true; } return !this.isLineTerminator(); } tsTryParseGenericAsyncArrowFunction(startPos, startLoc) { if (!this.match(47)) { return undefined; } const oldMaybeInArrowParameters = this.state.maybeInArrowParameters; this.state.maybeInArrowParameters = true; const res = this.tsTryParseAndCatch(() => { const node = this.startNodeAt(startPos, startLoc); node.typeParameters = this.tsParseTypeParameters(); super.parseFunctionParams(node); node.returnType = this.tsTryParseTypeOrTypePredicateAnnotation(); this.expect(19); return node; }); this.state.maybeInArrowParameters = oldMaybeInArrowParameters; if (!res) { return undefined; } return this.parseArrowExpression(res, null, true); } tsParseTypeArgumentsInExpression() { if (this.reScan_lt() !== 47) { return undefined; } return this.tsParseTypeArguments(); } tsParseTypeArguments() { const node = this.startNode(); node.params = this.tsInType(() => this.tsInNoContext(() => { this.expect(47); return this.tsParseDelimitedList("TypeParametersOrArguments", this.tsParseType.bind(this)); })); if (node.params.length === 0) { this.raise(TSErrors.EmptyTypeArguments, { node }); } this.expect(48); return this.finishNode(node, "TSTypeParameterInstantiation"); } tsIsDeclarationStart() { return tokenIsTSDeclarationStart(this.state.type); } isExportDefaultSpecifier() { if (this.tsIsDeclarationStart()) return false; return super.isExportDefaultSpecifier(); } parseAssignableListItem(allowModifiers, decorators) { const startPos = this.state.start; const startLoc = this.state.startLoc; let accessibility; let readonly = false; let override = false; if (allowModifiers !== undefined) { const modified = {}; this.tsParseModifiers(modified, ["public", "private", "protected", "override", "readonly"]); accessibility = modified.accessibility; override = modified.override; readonly = modified.readonly; if (allowModifiers === false && (accessibility || readonly || override)) { this.raise(TSErrors.UnexpectedParameterModifier, { at: startLoc }); } } const left = this.parseMaybeDefault(); this.parseAssignableListItemTypes(left); const elt = this.parseMaybeDefault(left.start, left.loc.start, left); if (accessibility || readonly || override) { const pp = this.startNodeAt(startPos, startLoc); if (decorators.length) { pp.decorators = decorators; } if (accessibility) pp.accessibility = accessibility; if (readonly) pp.readonly = readonly; if (override) pp.override = override; if (elt.type !== "Identifier" && elt.type !== "AssignmentPattern") { this.raise(TSErrors.UnsupportedParameterPropertyKind, { node: pp }); } pp.parameter = elt; return this.finishNode(pp, "TSParameterProperty"); } if (decorators.length) { left.decorators = decorators; } return elt; } parseFunctionBodyAndFinish(node, type, isMethod = false) { if (this.match(14)) { node.returnType = this.tsParseTypeOrTypePredicateAnnotation(14); } const bodilessType = type === "FunctionDeclaration" ? "TSDeclareFunction" : type === "ClassMethod" || type === "ClassPrivateMethod" ? "TSDeclareMethod" : undefined; if (bodilessType && !this.match(5) && this.isLineTerminator()) { this.finishNode(node, bodilessType); return; } if (bodilessType === "TSDeclareFunction" && this.state.isAmbientContext) { this.raise(TSErrors.DeclareFunctionHasImplementation, { node }); if (node.declare) { super.parseFunctionBodyAndFinish(node, bodilessType, isMethod); return; } } super.parseFunctionBodyAndFinish(node, type, isMethod); } registerFunctionStatementId(node) { if (!node.body && node.id) { this.checkLVal(node.id, "function name", BIND_TS_AMBIENT); } else { super.registerFunctionStatementId(...arguments); } } tsCheckForInvalidTypeCasts(items) { items.forEach(node => { if ((node == null ? void 0 : node.type) === "TSTypeCastExpression") { this.raise(TSErrors.UnexpectedTypeAnnotation, { node: node.typeAnnotation }); } }); } toReferencedList(exprList, isInParens) { this.tsCheckForInvalidTypeCasts(exprList); return exprList; } parseArrayLike(...args) { const node = super.parseArrayLike(...args); if (node.type === "ArrayExpression") { this.tsCheckForInvalidTypeCasts(node.elements); } return node; } parseSubscript(base, startPos, startLoc, noCalls, state) { if (!this.hasPrecedingLineBreak() && this.match(35)) { this.state.canStartJSXElement = false; this.next(); const nonNullExpression = this.startNodeAt(startPos, startLoc); nonNullExpression.expression = base; return this.finishNode(nonNullExpression, "TSNonNullExpression"); } let isOptionalCall = false; if (this.match(18) && this.lookaheadCharCode() === 60) { if (noCalls) { state.stop = true; return base; } state.optionalChainMember = isOptionalCall = true; this.next(); } if (this.match(47) || this.match(51)) { let missingParenErrorLoc; const result = this.tsTryParseAndCatch(() => { if (!noCalls && this.atPossibleAsyncArrow(base)) { const asyncArrowFn = this.tsTryParseGenericAsyncArrowFunction(startPos, startLoc); if (asyncArrowFn) { return asyncArrowFn; } } const node = this.startNodeAt(startPos, startLoc); node.callee = base; const typeArguments = this.tsParseTypeArgumentsInExpression(); if (typeArguments) { if (isOptionalCall && !this.match(10)) { missingParenErrorLoc = this.state.curPosition(); this.unexpected(); } if (!noCalls && this.eat(10)) { node.arguments = this.parseCallExpressionArguments(11, false); this.tsCheckForInvalidTypeCasts(node.arguments); node.typeParameters = typeArguments; if (state.optionalChainMember) { node.optional = isOptionalCall; } return this.finishCallExpression(node, state.optionalChainMember); } else if (tokenIsTemplate(this.state.type)) { const result = this.parseTaggedTemplateExpression(base, startPos, startLoc, state); result.typeParameters = typeArguments; return result; } } this.unexpected(); }); if (missingParenErrorLoc) { this.unexpected(missingParenErrorLoc, 10); } if (result) return result; } return super.parseSubscript(base, startPos, startLoc, noCalls, state); } parseNewArguments(node) { if (this.match(47) || this.match(51)) { const typeParameters = this.tsTryParseAndCatch(() => { const args = this.tsParseTypeArgumentsInExpression(); if (!this.match(10)) this.unexpected(); return args; }); if (typeParameters) { node.typeParameters = typeParameters; } } super.parseNewArguments(node); } parseExprOp(left, leftStartPos, leftStartLoc, minPrec) { if (tokenOperatorPrecedence(58) > minPrec && !this.hasPrecedingLineBreak() && this.isContextual(93)) { const node = this.startNodeAt(leftStartPos, leftStartLoc); node.expression = left; const _const = this.tsTryNextParseConstantContext(); if (_const) { node.typeAnnotation = _const; } else { node.typeAnnotation = this.tsNextThenParseType(); } this.finishNode(node, "TSAsExpression"); this.reScan_lt_gt(); return this.parseExprOp(node, leftStartPos, leftStartLoc, minPrec); } return super.parseExprOp(left, leftStartPos, leftStartLoc, minPrec); } checkReservedWord(word, startLoc, checkKeywords, isBinding) {} checkDuplicateExports() {} parseImport(node) { node.importKind = "value"; if (tokenIsIdentifier(this.state.type) || this.match(55) || this.match(5)) { let ahead = this.lookahead(); if (this.isContextual(126) && ahead.type !== 12 && ahead.type !== 97 && ahead.type !== 29) { node.importKind = "type"; this.next(); ahead = this.lookahead(); } if (tokenIsIdentifier(this.state.type) && ahead.type === 29) { return this.tsParseImportEqualsDeclaration(node); } } const importNode = super.parseImport(node); if (importNode.importKind === "type" && importNode.specifiers.length > 1 && importNode.specifiers[0].type === "ImportDefaultSpecifier") { this.raise(TSErrors.TypeImportCannotSpecifyDefaultAndNamed, { node: importNode }); } return importNode; } parseExport(node) { if (this.match(83)) { this.next(); if (this.isContextual(126) && this.lookaheadCharCode() !== 61) { node.importKind = "type"; this.next(); } else { node.importKind = "value"; } return this.tsParseImportEqualsDeclaration(node, true); } else if (this.eat(29)) { const assign = node; assign.expression = this.parseExpression(); this.semicolon(); return this.finishNode(assign, "TSExportAssignment"); } else if (this.eatContextual(93)) { const decl = node; this.expectContextual(124); decl.id = this.parseIdentifier(); this.semicolon(); return this.finishNode(decl, "TSNamespaceExportDeclaration"); } else { if (this.isContextual(126) && this.lookahead().type === 5) { this.next(); node.exportKind = "type"; } else { node.exportKind = "value"; } return super.parseExport(node); } } isAbstractClass() { return this.isContextual(120) && this.lookahead().type === 80; } parseExportDefaultExpression() { if (this.isAbstractClass()) { const cls = this.startNode(); this.next(); cls.abstract = true; this.parseClass(cls, true, true); return cls; } if (this.match(125)) { const interfaceNode = this.startNode(); this.next(); const result = this.tsParseInterfaceDeclaration(interfaceNode); if (result) return result; } return super.parseExportDefaultExpression(); } parseStatementContent(context, topLevel) { if (this.state.type === 75) { const ahead = this.lookahead(); if (ahead.type === 122) { const node = this.startNode(); this.next(); this.expectContextual(122); return this.tsParseEnumDeclaration(node, true); } } return super.parseStatementContent(context, topLevel); } parseAccessModifier() { return this.tsParseModifier(["public", "protected", "private"]); } tsHasSomeModifiers(member, modifiers) { return modifiers.some(modifier => { if (tsIsAccessModifier(modifier)) { return member.accessibility === modifier; } return !!member[modifier]; }); } tsIsStartOfStaticBlocks() { return this.isContextual(104) && this.lookaheadCharCode() === 123; } parseClassMember(classBody, member, state) { const modifiers = ["declare", "private", "public", "protected", "override", "abstract", "readonly", "static"]; this.tsParseModifiers(member, modifiers, undefined, undefined, true); const callParseClassMemberWithIsStatic = () => { if (this.tsIsStartOfStaticBlocks()) { this.next(); this.next(); if (this.tsHasSomeModifiers(member, modifiers)) { this.raise(TSErrors.StaticBlockCannotHaveModifier, { at: this.state.curPosition() }); } this.parseClassStaticBlock(classBody, member); } else { this.parseClassMemberWithIsStatic(classBody, member, state, !!member.static); } }; if (member.declare) { this.tsInAmbientContext(callParseClassMemberWithIsStatic); } else { callParseClassMemberWithIsStatic(); } } parseClassMemberWithIsStatic(classBody, member, state, isStatic) { const idx = this.tsTryParseIndexSignature(member); if (idx) { classBody.body.push(idx); if (member.abstract) { this.raise(TSErrors.IndexSignatureHasAbstract, { node: member }); } if (member.accessibility) { this.raise(TSErrors.IndexSignatureHasAccessibility, { node: member }, member.accessibility); } if (member.declare) { this.raise(TSErrors.IndexSignatureHasDeclare, { node: member }); } if (member.override) { this.raise(TSErrors.IndexSignatureHasOverride, { node: member }); } return; } if (!this.state.inAbstractClass && member.abstract) { this.raise(TSErrors.NonAbstractClassHasAbstractMethod, { node: member }); } if (member.override) { if (!state.hadSuperClass) { this.raise(TSErrors.OverrideNotInSubClass, { node: member }); } } super.parseClassMemberWithIsStatic(classBody, member, state, isStatic); } parsePostMemberNameModifiers(methodOrProp) { const optional = this.eat(17); if (optional) methodOrProp.optional = true; if (methodOrProp.readonly && this.match(10)) { this.raise(TSErrors.ClassMethodHasReadonly, { node: methodOrProp }); } if (methodOrProp.declare && this.match(10)) { this.raise(TSErrors.ClassMethodHasDeclare, { node: methodOrProp }); } } parseExpressionStatement(node, expr) { const decl = expr.type === "Identifier" ? this.tsParseExpressionStatement(node, expr) : undefined; return decl || super.parseExpressionStatement(node, expr); } shouldParseExportDeclaration() { if (this.tsIsDeclarationStart()) return true; return super.shouldParseExportDeclaration(); } parseConditional(expr, startPos, startLoc, refExpressionErrors) { if (!this.state.maybeInArrowParameters || !this.match(17)) { return super.parseConditional(expr, startPos, startLoc, refExpressionErrors); } const result = this.tryParse(() => super.parseConditional(expr, startPos, startLoc)); if (!result.node) { if (result.error) { super.setOptionalParametersError(refExpressionErrors, result.error); } return expr; } if (result.error) this.state = result.failState; return result.node; } parseParenItem(node, startPos, startLoc) { node = super.parseParenItem(node, startPos, startLoc); if (this.eat(17)) { node.optional = true; this.resetEndLocation(node); } if (this.match(14)) { const typeCastNode = this.startNodeAt(startPos, startLoc); typeCastNode.expression = node; typeCastNode.typeAnnotation = this.tsParseTypeAnnotation(); return this.finishNode(typeCastNode, "TSTypeCastExpression"); } return node; } parseExportDeclaration(node) { const startPos = this.state.start; const startLoc = this.state.startLoc; const isDeclare = this.eatContextual(121); if (isDeclare && (this.isContextual(121) || !this.shouldParseExportDeclaration())) { throw this.raise(TSErrors.ExpectedAmbientAfterExportDeclare, { at: this.state.startLoc }); } let declaration; if (tokenIsIdentifier(this.state.type)) { declaration = this.tsTryParseExportDeclaration(); } if (!declaration) { declaration = super.parseExportDeclaration(node); } if (declaration && (declaration.type === "TSInterfaceDeclaration" || declaration.type === "TSTypeAliasDeclaration" || isDeclare)) { node.exportKind = "type"; } if (declaration && isDeclare) { this.resetStartLocation(declaration, startPos, startLoc); declaration.declare = true; } return declaration; } parseClassId(node, isStatement, optionalId) { if ((!isStatement || optionalId) && this.isContextual(110)) { return; } super.parseClassId(node, isStatement, optionalId, node.declare ? BIND_TS_AMBIENT : BIND_CLASS); const typeParameters = this.tsTryParseTypeParameters(); if (typeParameters) node.typeParameters = typeParameters; } parseClassPropertyAnnotation(node) { if (!node.optional && this.eat(35)) { node.definite = true; } const type = this.tsTryParseTypeAnnotation(); if (type) node.typeAnnotation = type; } parseClassProperty(node) { this.parseClassPropertyAnnotation(node); if (this.state.isAmbientContext && this.match(29)) { this.raise(TSErrors.DeclareClassFieldHasInitializer, { at: this.state.startLoc }); } if (node.abstract && this.match(29)) { const { key } = node; this.raise(TSErrors.AbstractPropertyHasInitializer, { at: this.state.startLoc }, key.type === "Identifier" && !node.computed ? key.name : `[${this.input.slice(key.start, key.end)}]`); } return super.parseClassProperty(node); } parseClassPrivateProperty(node) { if (node.abstract) { this.raise(TSErrors.PrivateElementHasAbstract, { node }); } if (node.accessibility) { this.raise(TSErrors.PrivateElementHasAccessibility, { node }, node.accessibility); } this.parseClassPropertyAnnotation(node); return super.parseClassPrivateProperty(node); } pushClassMethod(classBody, method, isGenerator, isAsync, isConstructor, allowsDirectSuper) { const typeParameters = this.tsTryParseTypeParameters(); if (typeParameters && isConstructor) { this.raise(TSErrors.ConstructorHasTypeParameters, { node: typeParameters }); } if (method.declare && (method.kind === "get" || method.kind === "set")) { this.raise(TSErrors.DeclareAccessor, { node: method }, method.kind); } if (typeParameters) method.typeParameters = typeParameters; super.pushClassMethod(classBody, method, isGenerator, isAsync, isConstructor, allowsDirectSuper); } pushClassPrivateMethod(classBody, method, isGenerator, isAsync) { const typeParameters = this.tsTryParseTypeParameters(); if (typeParameters) method.typeParameters = typeParameters; super.pushClassPrivateMethod(classBody, method, isGenerator, isAsync); } declareClassPrivateMethodInScope(node, kind) { if (node.type === "TSDeclareMethod") return; if (node.type === "MethodDefinition" && !node.value.body) return; super.declareClassPrivateMethodInScope(node, kind); } parseClassSuper(node) { super.parseClassSuper(node); if (node.superClass && (this.match(47) || this.match(51))) { node.superTypeParameters = this.tsParseTypeArgumentsInExpression(); } if (this.eatContextual(110)) { node.implements = this.tsParseHeritageClause("implements"); } } parseObjPropValue(prop, ...args) { const typeParameters = this.tsTryParseTypeParameters(); if (typeParameters) prop.typeParameters = typeParameters; super.parseObjPropValue(prop, ...args); } parseFunctionParams(node, allowModifiers) { const typeParameters = this.tsTryParseTypeParameters(); if (typeParameters) node.typeParameters = typeParameters; super.parseFunctionParams(node, allowModifiers); } parseVarId(decl, kind) { super.parseVarId(decl, kind); if (decl.id.type === "Identifier" && !this.hasPrecedingLineBreak() && this.eat(35)) { decl.definite = true; } const type = this.tsTryParseTypeAnnotation(); if (type) { decl.id.typeAnnotation = type; this.resetEndLocation(decl.id); } } parseAsyncArrowFromCallExpression(node, call) { if (this.match(14)) { node.returnType = this.tsParseTypeAnnotation(); } return super.parseAsyncArrowFromCallExpression(node, call); } parseMaybeAssign(...args) { var _jsx, _jsx2, _typeCast, _jsx3, _typeCast2, _jsx4, _typeCast3; let state; let jsx; let typeCast; if (this.hasPlugin("jsx") && (this.match(138) || this.match(47))) { state = this.state.clone(); jsx = this.tryParse(() => super.parseMaybeAssign(...args), state); if (!jsx.error) return jsx.node; const { context } = this.state; const currentContext = context[context.length - 1]; if (currentContext === types.j_oTag || currentContext === types.j_expr) { context.pop(); } } if (!((_jsx = jsx) != null && _jsx.error) && !this.match(47)) { return super.parseMaybeAssign(...args); } let typeParameters; state = state || this.state.clone(); const arrow = this.tryParse(abort => { var _expr$extra, _typeParameters; typeParameters = this.tsParseTypeParameters(); const expr = super.parseMaybeAssign(...args); if (expr.type !== "ArrowFunctionExpression" || (_expr$extra = expr.extra) != null && _expr$extra.parenthesized) { abort(); } if (((_typeParameters = typeParameters) == null ? void 0 : _typeParameters.params.length) !== 0) { this.resetStartLocationFromNode(expr, typeParameters); } expr.typeParameters = typeParameters; return expr; }, state); if (!arrow.error && !arrow.aborted) { if (typeParameters) this.reportReservedArrowTypeParam(typeParameters); return arrow.node; } if (!jsx) { assert(!this.hasPlugin("jsx")); typeCast = this.tryParse(() => super.parseMaybeAssign(...args), state); if (!typeCast.error) return typeCast.node; } if ((_jsx2 = jsx) != null && _jsx2.node) { this.state = jsx.failState; return jsx.node; } if (arrow.node) { this.state = arrow.failState; if (typeParameters) this.reportReservedArrowTypeParam(typeParameters); return arrow.node; } if ((_typeCast = typeCast) != null && _typeCast.node) { this.state = typeCast.failState; return typeCast.node; } if ((_jsx3 = jsx) != null && _jsx3.thrown) throw jsx.error; if (arrow.thrown) throw arrow.error; if ((_typeCast2 = typeCast) != null && _typeCast2.thrown) throw typeCast.error; throw ((_jsx4 = jsx) == null ? void 0 : _jsx4.error) || arrow.error || ((_typeCast3 = typeCast) == null ? void 0 : _typeCast3.error); } reportReservedArrowTypeParam(node) { var _node$extra; if (node.params.length === 1 && !((_node$extra = node.extra) != null && _node$extra.trailingComma) && this.getPluginOption("typescript", "disallowAmbiguousJSXLike")) { this.raise(TSErrors.ReservedArrowTypeParam, { node }); } } parseMaybeUnary(refExpressionErrors) { if (!this.hasPlugin("jsx") && this.match(47)) { return this.tsParseTypeAssertion(); } else { return super.parseMaybeUnary(refExpressionErrors); } } parseArrow(node) { if (this.match(14)) { const result = this.tryParse(abort => { const returnType = this.tsParseTypeOrTypePredicateAnnotation(14); if (this.canInsertSemicolon() || !this.match(19)) abort(); return returnType; }); if (result.aborted) return; if (!result.thrown) { if (result.error) this.state = result.failState; node.returnType = result.node; } } return super.parseArrow(node); } parseAssignableListItemTypes(param) { if (this.eat(17)) { if (param.type !== "Identifier" && !this.state.isAmbientContext && !this.state.inType) { this.raise(TSErrors.PatternIsOptional, { node: param }); } param.optional = true; } const type = this.tsTryParseTypeAnnotation(); if (type) param.typeAnnotation = type; this.resetEndLocation(param); return param; } isAssignable(node, isBinding) { switch (node.type) { case "TSTypeCastExpression": return this.isAssignable(node.expression, isBinding); case "TSParameterProperty": return true; default: return super.isAssignable(node, isBinding); } } toAssignable(node, isLHS = false) { switch (node.type) { case "TSTypeCastExpression": return super.toAssignable(this.typeCastToParameter(node), isLHS); case "TSParameterProperty": return super.toAssignable(node, isLHS); case "ParenthesizedExpression": return this.toAssignableParenthesizedExpression(node, isLHS); case "TSAsExpression": case "TSNonNullExpression": case "TSTypeAssertion": node.expression = this.toAssignable(node.expression, isLHS); return node; default: return super.toAssignable(node, isLHS); } } toAssignableParenthesizedExpression(node, isLHS) { switch (node.expression.type) { case "TSAsExpression": case "TSNonNullExpression": case "TSTypeAssertion": case "ParenthesizedExpression": node.expression = this.toAssignable(node.expression, isLHS); return node; default: return super.toAssignable(node, isLHS); } } checkLVal(expr, contextDescription, ...args) { var _expr$extra2; switch (expr.type) { case "TSTypeCastExpression": return; case "TSParameterProperty": this.checkLVal(expr.parameter, "parameter property", ...args); return; case "TSAsExpression": case "TSTypeAssertion": if (!args[0] && contextDescription !== "parenthesized expression" && !((_expr$extra2 = expr.extra) != null && _expr$extra2.parenthesized)) { this.raise(ErrorMessages.InvalidLhs, { node: expr }, contextDescription); break; } this.checkLVal(expr.expression, "parenthesized expression", ...args); return; case "TSNonNullExpression": this.checkLVal(expr.expression, contextDescription, ...args); return; default: super.checkLVal(expr, contextDescription, ...args); return; } } parseBindingAtom() { switch (this.state.type) { case 78: return this.parseIdentifier(true); default: return super.parseBindingAtom(); } } parseMaybeDecoratorArguments(expr) { if (this.match(47) || this.match(51)) { const typeArguments = this.tsParseTypeArgumentsInExpression(); if (this.match(10)) { const call = super.parseMaybeDecoratorArguments(expr); call.typeParameters = typeArguments; return call; } this.unexpected(null, 10); } return super.parseMaybeDecoratorArguments(expr); } checkCommaAfterRest(close) { if (this.state.isAmbientContext && this.match(12) && this.lookaheadCharCode() === close) { this.next(); return false; } else { return super.checkCommaAfterRest(close); } } isClassMethod() { return this.match(47) || super.isClassMethod(); } isClassProperty() { return this.match(35) || this.match(14) || super.isClassProperty(); } parseMaybeDefault(...args) { const node = super.parseMaybeDefault(...args); if (node.type === "AssignmentPattern" && node.typeAnnotation && node.right.start < node.typeAnnotation.start) { this.raise(TSErrors.TypeAnnotationAfterAssign, { node: node.typeAnnotation }); } return node; } getTokenFromCode(code) { if (this.state.inType) { if (code === 62) { return this.finishOp(48, 1); } if (code === 60) { return this.finishOp(47, 1); } } return super.getTokenFromCode(code); } reScan_lt_gt() { const { type } = this.state; if (type === 47) { this.state.pos -= 1; this.readToken_lt(); } else if (type === 48) { this.state.pos -= 1; this.readToken_gt(); } } reScan_lt() { const { type } = this.state; if (type === 51) { this.state.pos -= 2; this.finishOp(47, 1); return 47; } return type; } toAssignableList(exprList) { for (let i = 0; i < exprList.length; i++) { const expr = exprList[i]; if (!expr) continue; switch (expr.type) { case "TSTypeCastExpression": exprList[i] = this.typeCastToParameter(expr); break; case "TSAsExpression": case "TSTypeAssertion": if (!this.state.maybeInArrowParameters) { exprList[i] = this.typeCastToParameter(expr); } else { this.raise(TSErrors.UnexpectedTypeCastInParameter, { node: expr }); } break; } } return super.toAssignableList(...arguments); } typeCastToParameter(node) { node.expression.typeAnnotation = node.typeAnnotation; this.resetEndLocation(node.expression, node.typeAnnotation.loc.end); return node.expression; } shouldParseArrow(params) { if (this.match(14)) { return params.every(expr => this.isAssignable(expr, true)); } return super.shouldParseArrow(params); } shouldParseAsyncArrow() { return this.match(14) || super.shouldParseAsyncArrow(); } canHaveLeadingDecorator() { return super.canHaveLeadingDecorator() || this.isAbstractClass(); } jsxParseOpeningElementAfterName(node) { if (this.match(47) || this.match(51)) { const typeArguments = this.tsTryParseAndCatch(() => this.tsParseTypeArgumentsInExpression()); if (typeArguments) node.typeParameters = typeArguments; } return super.jsxParseOpeningElementAfterName(node); } getGetterSetterExpectedParamCount(method) { const baseCount = super.getGetterSetterExpectedParamCount(method); const params = this.getObjectOrClassMethodParams(method); const firstParam = params[0]; const hasContextParam = firstParam && this.isThisParam(firstParam); return hasContextParam ? baseCount + 1 : baseCount; } parseCatchClauseParam() { const param = super.parseCatchClauseParam(); const type = this.tsTryParseTypeAnnotation(); if (type) { param.typeAnnotation = type; this.resetEndLocation(param); } return param; } tsInAmbientContext(cb) { const oldIsAmbientContext = this.state.isAmbientContext; this.state.isAmbientContext = true; try { return cb(); } finally { this.state.isAmbientContext = oldIsAmbientContext; } } parseClass(node, ...args) { const oldInAbstractClass = this.state.inAbstractClass; this.state.inAbstractClass = !!node.abstract; try { return super.parseClass(node, ...args); } finally { this.state.inAbstractClass = oldInAbstractClass; } } tsParseAbstractDeclaration(node) { if (this.match(80)) { node.abstract = true; return this.parseClass(node, true, false); } else if (this.isContextual(125)) { if (!this.hasFollowingLineBreak()) { node.abstract = true; this.raise(TSErrors.NonClassMethodPropertyHasAbstractModifer, { node }); this.next(); return this.tsParseInterfaceDeclaration(node); } } else { this.unexpected(null, 80); } } parseMethod(...args) { const method = super.parseMethod(...args); if (method.abstract) { const hasBody = this.hasPlugin("estree") ? !!method.value.body : !!method.body; if (hasBody) { const { key } = method; this.raise(TSErrors.AbstractMethodHasImplementation, { node: method }, key.type === "Identifier" && !method.computed ? key.name : `[${this.input.slice(key.start, key.end)}]`); } } return method; } tsParseTypeParameterName() { const typeName = this.parseIdentifier(); return typeName.name; } shouldParseAsAmbientContext() { return !!this.getPluginOption("typescript", "dts"); } parse() { if (this.shouldParseAsAmbientContext()) { this.state.isAmbientContext = true; } return super.parse(); } getExpression() { if (this.shouldParseAsAmbientContext()) { this.state.isAmbientContext = true; } return super.getExpression(); } parseExportSpecifier(node, isString, isInTypeExport, isMaybeTypeOnly) { if (!isString && isMaybeTypeOnly) { this.parseTypeOnlyImportExportSpecifier(node, false, isInTypeExport); return this.finishNode(node, "ExportSpecifier"); } node.exportKind = "value"; return super.parseExportSpecifier(node, isString, isInTypeExport, isMaybeTypeOnly); } parseImportSpecifier(specifier, importedIsString, isInTypeOnlyImport, isMaybeTypeOnly) { if (!importedIsString && isMaybeTypeOnly) { this.parseTypeOnlyImportExportSpecifier(specifier, true, isInTypeOnlyImport); return this.finishNode(specifier, "ImportSpecifier"); } specifier.importKind = "value"; return super.parseImportSpecifier(specifier, importedIsString, isInTypeOnlyImport, isMaybeTypeOnly); } parseTypeOnlyImportExportSpecifier(node, isImport, isInTypeOnlyImportExport) { const leftOfAsKey = isImport ? "imported" : "local"; const rightOfAsKey = isImport ? "local" : "exported"; let leftOfAs = node[leftOfAsKey]; let rightOfAs; let hasTypeSpecifier = false; let canParseAsKeyword = true; const loc = leftOfAs.loc.start; if (this.isContextual(93)) { const firstAs = this.parseIdentifier(); if (this.isContextual(93)) { const secondAs = this.parseIdentifier(); if (tokenIsKeywordOrIdentifier(this.state.type)) { hasTypeSpecifier = true; leftOfAs = firstAs; rightOfAs = this.parseIdentifier(); canParseAsKeyword = false; } else { rightOfAs = secondAs; canParseAsKeyword = false; } } else if (tokenIsKeywordOrIdentifier(this.state.type)) { canParseAsKeyword = false; rightOfAs = this.parseIdentifier(); } else { hasTypeSpecifier = true; leftOfAs = firstAs; } } else if (tokenIsKeywordOrIdentifier(this.state.type)) { hasTypeSpecifier = true; leftOfAs = this.parseIdentifier(); } if (hasTypeSpecifier && isInTypeOnlyImportExport) { this.raise(isImport ? TSErrors.TypeModifierIsUsedInTypeImports : TSErrors.TypeModifierIsUsedInTypeExports, { at: loc }); } node[leftOfAsKey] = leftOfAs; node[rightOfAsKey] = rightOfAs; const kindKey = isImport ? "importKind" : "exportKind"; node[kindKey] = hasTypeSpecifier ? "type" : "value"; if (canParseAsKeyword && this.eatContextual(93)) { node[rightOfAsKey] = isImport ? this.parseIdentifier() : this.parseModuleExportName(); } if (!node[rightOfAsKey]) { node[rightOfAsKey] = cloneIdentifier(node[leftOfAsKey]); } if (isImport) { this.checkLVal(node[rightOfAsKey], "import specifier", BIND_LEXICAL); } } }); const PlaceholderErrors = makeErrorTemplates({ ClassNameIsRequired: "A class name is required." }, ErrorCodes.SyntaxError, "placeholders"); var placeholders = (superClass => class extends superClass { parsePlaceholder(expectedNode) { if (this.match(140)) { const node = this.startNode(); this.next(); this.assertNoSpace("Unexpected space in placeholder."); node.name = super.parseIdentifier(true); this.assertNoSpace("Unexpected space in placeholder."); this.expect(140); return this.finishPlaceholder(node, expectedNode); } } finishPlaceholder(node, expectedNode) { const isFinished = !!(node.expectedNode && node.type === "Placeholder"); node.expectedNode = expectedNode; return isFinished ? node : this.finishNode(node, "Placeholder"); } getTokenFromCode(code) { if (code === 37 && this.input.charCodeAt(this.state.pos + 1) === 37) { return this.finishOp(140, 2); } return super.getTokenFromCode(...arguments); } parseExprAtom() { return this.parsePlaceholder("Expression") || super.parseExprAtom(...arguments); } parseIdentifier() { return this.parsePlaceholder("Identifier") || super.parseIdentifier(...arguments); } checkReservedWord(word) { if (word !== undefined) super.checkReservedWord(...arguments); } parseBindingAtom() { return this.parsePlaceholder("Pattern") || super.parseBindingAtom(...arguments); } checkLVal(expr) { if (expr.type !== "Placeholder") super.checkLVal(...arguments); } toAssignable(node) { if (node && node.type === "Placeholder" && node.expectedNode === "Expression") { node.expectedNode = "Pattern"; return node; } return super.toAssignable(...arguments); } isLet(context) { if (super.isLet(context)) { return true; } if (!this.isContextual(99)) { return false; } if (context) return false; const nextToken = this.lookahead(); if (nextToken.type === 140) { return true; } return false; } verifyBreakContinue(node) { if (node.label && node.label.type === "Placeholder") return; super.verifyBreakContinue(...arguments); } parseExpressionStatement(node, expr) { if (expr.type !== "Placeholder" || expr.extra && expr.extra.parenthesized) { return super.parseExpressionStatement(...arguments); } if (this.match(14)) { const stmt = node; stmt.label = this.finishPlaceholder(expr, "Identifier"); this.next(); stmt.body = this.parseStatement("label"); return this.finishNode(stmt, "LabeledStatement"); } this.semicolon(); node.name = expr.name; return this.finishPlaceholder(node, "Statement"); } parseBlock() { return this.parsePlaceholder("BlockStatement") || super.parseBlock(...arguments); } parseFunctionId() { return this.parsePlaceholder("Identifier") || super.parseFunctionId(...arguments); } parseClass(node, isStatement, optionalId) { const type = isStatement ? "ClassDeclaration" : "ClassExpression"; this.next(); this.takeDecorators(node); const oldStrict = this.state.strict; const placeholder = this.parsePlaceholder("Identifier"); if (placeholder) { if (this.match(81) || this.match(140) || this.match(5)) { node.id = placeholder; } else if (optionalId || !isStatement) { node.id = null; node.body = this.finishPlaceholder(placeholder, "ClassBody"); return this.finishNode(node, type); } else { throw this.raise(PlaceholderErrors.ClassNameIsRequired, { at: this.state.startLoc }); } } else { this.parseClassId(node, isStatement, optionalId); } this.parseClassSuper(node); node.body = this.parsePlaceholder("ClassBody") || this.parseClassBody(!!node.superClass, oldStrict); return this.finishNode(node, type); } parseExport(node) { const placeholder = this.parsePlaceholder("Identifier"); if (!placeholder) return super.parseExport(...arguments); if (!this.isContextual(97) && !this.match(12)) { node.specifiers = []; node.source = null; node.declaration = this.finishPlaceholder(placeholder, "Declaration"); return this.finishNode(node, "ExportNamedDeclaration"); } this.expectPlugin("exportDefaultFrom"); const specifier = this.startNode(); specifier.exported = placeholder; node.specifiers = [this.finishNode(specifier, "ExportDefaultSpecifier")]; return super.parseExport(node); } isExportDefaultSpecifier() { if (this.match(65)) { const next = this.nextTokenStart(); if (this.isUnparsedContextual(next, "from")) { if (this.input.startsWith(tokenLabelName(140), this.nextTokenStartSince(next + 4))) { return true; } } } return super.isExportDefaultSpecifier(); } maybeParseExportDefaultSpecifier(node) { if (node.specifiers && node.specifiers.length > 0) { return true; } return super.maybeParseExportDefaultSpecifier(...arguments); } checkExport(node) { const { specifiers } = node; if (specifiers != null && specifiers.length) { node.specifiers = specifiers.filter(node => node.exported.type === "Placeholder"); } super.checkExport(node); node.specifiers = specifiers; } parseImport(node) { const placeholder = this.parsePlaceholder("Identifier"); if (!placeholder) return super.parseImport(...arguments); node.specifiers = []; if (!this.isContextual(97) && !this.match(12)) { node.source = this.finishPlaceholder(placeholder, "StringLiteral"); this.semicolon(); return this.finishNode(node, "ImportDeclaration"); } const specifier = this.startNodeAtNode(placeholder); specifier.local = placeholder; this.finishNode(specifier, "ImportDefaultSpecifier"); node.specifiers.push(specifier); if (this.eat(12)) { const hasStarImport = this.maybeParseStarImportSpecifier(node); if (!hasStarImport) this.parseNamedImportSpecifiers(node); } this.expectContextual(97); node.source = this.parseImportSource(); this.semicolon(); return this.finishNode(node, "ImportDeclaration"); } parseImportSource() { return this.parsePlaceholder("StringLiteral") || super.parseImportSource(...arguments); } }); var v8intrinsic = (superClass => class extends superClass { parseV8Intrinsic() { if (this.match(54)) { const v8IntrinsicStartLoc = this.state.startLoc; const node = this.startNode(); this.next(); if (tokenIsIdentifier(this.state.type)) { const name = this.parseIdentifierName(this.state.start); const identifier = this.createIdentifier(node, name); identifier.type = "V8IntrinsicIdentifier"; if (this.match(10)) { return identifier; } } this.unexpected(v8IntrinsicStartLoc); } } parseExprAtom() { return this.parseV8Intrinsic() || super.parseExprAtom(...arguments); } }); function hasPlugin(plugins, expectedConfig) { const [expectedName, expectedOptions] = typeof expectedConfig === "string" ? [expectedConfig, {}] : expectedConfig; const expectedKeys = Object.keys(expectedOptions); const expectedOptionsIsEmpty = expectedKeys.length === 0; return plugins.some(p => { if (typeof p === "string") { return expectedOptionsIsEmpty && p === expectedName; } else { const [pluginName, pluginOptions] = p; if (pluginName !== expectedName) { return false; } for (const key of expectedKeys) { if (pluginOptions[key] !== expectedOptions[key]) { return false; } } return true; } }); } function getPluginOption(plugins, name, option) { const plugin = plugins.find(plugin => { if (Array.isArray(plugin)) { return plugin[0] === name; } else { return plugin === name; } }); if (plugin && Array.isArray(plugin)) { return plugin[1][option]; } return null; } const PIPELINE_PROPOSALS = ["minimal", "fsharp", "hack", "smart"]; const TOPIC_TOKENS = ["^^", "@@", "^", "%", "#"]; const RECORD_AND_TUPLE_SYNTAX_TYPES = ["hash", "bar"]; function validatePlugins(plugins) { if (hasPlugin(plugins, "decorators")) { if (hasPlugin(plugins, "decorators-legacy")) { throw new Error("Cannot use the decorators and decorators-legacy plugin together"); } const decoratorsBeforeExport = getPluginOption(plugins, "decorators", "decoratorsBeforeExport"); if (decoratorsBeforeExport == null) { throw new Error("The 'decorators' plugin requires a 'decoratorsBeforeExport' option," + " whose value must be a boolean. If you are migrating from" + " Babylon/Babel 6 or want to use the old decorators proposal, you" + " should use the 'decorators-legacy' plugin instead of 'decorators'."); } else if (typeof decoratorsBeforeExport !== "boolean") { throw new Error("'decoratorsBeforeExport' must be a boolean."); } } if (hasPlugin(plugins, "flow") && hasPlugin(plugins, "typescript")) { throw new Error("Cannot combine flow and typescript plugins."); } if (hasPlugin(plugins, "placeholders") && hasPlugin(plugins, "v8intrinsic")) { throw new Error("Cannot combine placeholders and v8intrinsic plugins."); } if (hasPlugin(plugins, "pipelineOperator")) { const proposal = getPluginOption(plugins, "pipelineOperator", "proposal"); if (!PIPELINE_PROPOSALS.includes(proposal)) { const proposalList = PIPELINE_PROPOSALS.map(p => `"${p}"`).join(", "); throw new Error(`"pipelineOperator" requires "proposal" option whose value must be one of: ${proposalList}.`); } const tupleSyntaxIsHash = hasPlugin(plugins, ["recordAndTuple", { syntaxType: "hash" }]); if (proposal === "hack") { if (hasPlugin(plugins, "placeholders")) { throw new Error("Cannot combine placeholders plugin and Hack-style pipes."); } if (hasPlugin(plugins, "v8intrinsic")) { throw new Error("Cannot combine v8intrinsic plugin and Hack-style pipes."); } const topicToken = getPluginOption(plugins, "pipelineOperator", "topicToken"); if (!TOPIC_TOKENS.includes(topicToken)) { const tokenList = TOPIC_TOKENS.map(t => `"${t}"`).join(", "); throw new Error(`"pipelineOperator" in "proposal": "hack" mode also requires a "topicToken" option whose value must be one of: ${tokenList}.`); } if (topicToken === "#" && tupleSyntaxIsHash) { throw new Error('Plugin conflict between `["pipelineOperator", { proposal: "hack", topicToken: "#" }]` and `["recordAndtuple", { syntaxType: "hash"}]`.'); } } else if (proposal === "smart" && tupleSyntaxIsHash) { throw new Error('Plugin conflict between `["pipelineOperator", { proposal: "smart" }]` and `["recordAndtuple", { syntaxType: "hash"}]`.'); } } if (hasPlugin(plugins, "moduleAttributes")) { { if (hasPlugin(plugins, "importAssertions")) { throw new Error("Cannot combine importAssertions and moduleAttributes plugins."); } const moduleAttributesVerionPluginOption = getPluginOption(plugins, "moduleAttributes", "version"); if (moduleAttributesVerionPluginOption !== "may-2020") { throw new Error("The 'moduleAttributes' plugin requires a 'version' option," + " representing the last proposal update. Currently, the" + " only supported value is 'may-2020'."); } } } if (hasPlugin(plugins, "recordAndTuple") && !RECORD_AND_TUPLE_SYNTAX_TYPES.includes(getPluginOption(plugins, "recordAndTuple", "syntaxType"))) { throw new Error("'recordAndTuple' requires 'syntaxType' option whose value should be one of: " + RECORD_AND_TUPLE_SYNTAX_TYPES.map(p => `'${p}'`).join(", ")); } if (hasPlugin(plugins, "asyncDoExpressions") && !hasPlugin(plugins, "doExpressions")) { const error = new Error("'asyncDoExpressions' requires 'doExpressions', please add 'doExpressions' to parser plugins."); error.missingPlugins = "doExpressions"; throw error; } } const mixinPlugins = { estree, jsx, flow, typescript, v8intrinsic, placeholders }; const mixinPluginNames = Object.keys(mixinPlugins); const defaultOptions = { sourceType: "script", sourceFilename: undefined, startColumn: 0, startLine: 1, allowAwaitOutsideFunction: false, allowReturnOutsideFunction: false, allowImportExportEverywhere: false, allowSuperOutsideMethod: false, allowUndeclaredExports: false, plugins: [], strictMode: null, ranges: false, tokens: false, createParenthesizedExpressions: false, errorRecovery: false, attachComment: true }; function getOptions(opts) { const options = {}; for (const key of Object.keys(defaultOptions)) { options[key] = opts && opts[key] != null ? opts[key] : defaultOptions[key]; } return options; } const unwrapParenthesizedExpression = node => { return node.type === "ParenthesizedExpression" ? unwrapParenthesizedExpression(node.expression) : node; }; class LValParser extends NodeUtils { toAssignable(node, isLHS = false) { var _node$extra, _node$extra3; let parenthesized = undefined; if (node.type === "ParenthesizedExpression" || (_node$extra = node.extra) != null && _node$extra.parenthesized) { parenthesized = unwrapParenthesizedExpression(node); if (isLHS) { if (parenthesized.type === "Identifier") { this.expressionScope.recordParenthesizedIdentifierError(ErrorMessages.InvalidParenthesizedAssignment, node.loc.start); } else if (parenthesized.type !== "MemberExpression") { this.raise(ErrorMessages.InvalidParenthesizedAssignment, { node }); } } else { this.raise(ErrorMessages.InvalidParenthesizedAssignment, { node }); } } switch (node.type) { case "Identifier": case "ObjectPattern": case "ArrayPattern": case "AssignmentPattern": case "RestElement": break; case "ObjectExpression": node.type = "ObjectPattern"; for (let i = 0, length = node.properties.length, last = length - 1; i < length; i++) { var _node$extra2; const prop = node.properties[i]; const isLast = i === last; this.toAssignableObjectExpressionProp(prop, isLast, isLHS); if (isLast && prop.type === "RestElement" && (_node$extra2 = node.extra) != null && _node$extra2.trailingCommaLoc) { this.raise(ErrorMessages.RestTrailingComma, { at: node.extra.trailingCommaLoc }); } } break; case "ObjectProperty": { const { key, value } = node; if (this.isPrivateName(key)) { this.classScope.usePrivateName(this.getPrivateNameSV(key), key.loc.start); } this.toAssignable(value, isLHS); break; } case "SpreadElement": { this.checkToRestConversion(node); node.type = "RestElement"; const arg = node.argument; this.toAssignable(arg, isLHS); break; } case "ArrayExpression": node.type = "ArrayPattern"; this.toAssignableList(node.elements, (_node$extra3 = node.extra) == null ? void 0 : _node$extra3.trailingCommaLoc, isLHS); break; case "AssignmentExpression": if (node.operator !== "=") { this.raise(ErrorMessages.MissingEqInAssignment, { at: node.left.loc.end }); } node.type = "AssignmentPattern"; delete node.operator; this.toAssignable(node.left, isLHS); break; case "ParenthesizedExpression": this.toAssignable(parenthesized, isLHS); break; } return node; } toAssignableObjectExpressionProp(prop, isLast, isLHS) { if (prop.type === "ObjectMethod") { this.raise(prop.kind === "get" || prop.kind === "set" ? ErrorMessages.PatternHasAccessor : ErrorMessages.PatternHasMethod, { node: prop.key }); } else if (prop.type === "SpreadElement" && !isLast) { this.raise(ErrorMessages.RestTrailingComma, { node: prop }); } else { this.toAssignable(prop, isLHS); } } toAssignableList(exprList, trailingCommaLoc, isLHS) { let end = exprList.length; if (end) { const last = exprList[end - 1]; if ((last == null ? void 0 : last.type) === "RestElement") { --end; } else if ((last == null ? void 0 : last.type) === "SpreadElement") { last.type = "RestElement"; let arg = last.argument; this.toAssignable(arg, isLHS); arg = unwrapParenthesizedExpression(arg); if (arg.type !== "Identifier" && arg.type !== "MemberExpression" && arg.type !== "ArrayPattern" && arg.type !== "ObjectPattern") { this.unexpected(arg.start); } if (trailingCommaLoc) { this.raise(ErrorMessages.RestTrailingComma, { at: trailingCommaLoc }); } --end; } } for (let i = 0; i < end; i++) { const elt = exprList[i]; if (elt) { this.toAssignable(elt, isLHS); if (elt.type === "RestElement") { this.raise(ErrorMessages.RestTrailingComma, { node: elt }); } } } return exprList; } isAssignable(node, isBinding) { switch (node.type) { case "Identifier": case "ObjectPattern": case "ArrayPattern": case "AssignmentPattern": case "RestElement": return true; case "ObjectExpression": { const last = node.properties.length - 1; return node.properties.every((prop, i) => { return prop.type !== "ObjectMethod" && (i === last || prop.type !== "SpreadElement") && this.isAssignable(prop); }); } case "ObjectProperty": return this.isAssignable(node.value); case "SpreadElement": return this.isAssignable(node.argument); case "ArrayExpression": return node.elements.every(element => element === null || this.isAssignable(element)); case "AssignmentExpression": return node.operator === "="; case "ParenthesizedExpression": return this.isAssignable(node.expression); case "MemberExpression": case "OptionalMemberExpression": return !isBinding; default: return false; } } toReferencedList(exprList, isParenthesizedExpr) { return exprList; } toReferencedListDeep(exprList, isParenthesizedExpr) { this.toReferencedList(exprList, isParenthesizedExpr); for (const expr of exprList) { if ((expr == null ? void 0 : expr.type) === "ArrayExpression") { this.toReferencedListDeep(expr.elements); } } } parseSpread(refExpressionErrors, refNeedsArrowPos) { const node = this.startNode(); this.next(); node.argument = this.parseMaybeAssignAllowIn(refExpressionErrors, undefined, refNeedsArrowPos); return this.finishNode(node, "SpreadElement"); } parseRestBinding() { const node = this.startNode(); this.next(); node.argument = this.parseBindingAtom(); return this.finishNode(node, "RestElement"); } parseBindingAtom() { switch (this.state.type) { case 0: { const node = this.startNode(); this.next(); node.elements = this.parseBindingList(3, 93, true); return this.finishNode(node, "ArrayPattern"); } case 5: return this.parseObjectLike(8, true); } return this.parseIdentifier(); } parseBindingList(close, closeCharCode, allowEmpty, allowModifiers) { const elts = []; let first = true; while (!this.eat(close)) { if (first) { first = false; } else { this.expect(12); } if (allowEmpty && this.match(12)) { elts.push(null); } else if (this.eat(close)) { break; } else if (this.match(21)) { elts.push(this.parseAssignableListItemTypes(this.parseRestBinding())); if (!this.checkCommaAfterRest(closeCharCode)) { this.expect(close); break; } } else { const decorators = []; if (this.match(26) && this.hasPlugin("decorators")) { this.raise(ErrorMessages.UnsupportedParameterDecorator, { at: this.state.startLoc }); } while (this.match(26)) { decorators.push(this.parseDecorator()); } elts.push(this.parseAssignableListItem(allowModifiers, decorators)); } } return elts; } parseBindingRestProperty(prop) { this.next(); prop.argument = this.parseIdentifier(); this.checkCommaAfterRest(125); return this.finishNode(prop, "RestElement"); } parseBindingProperty() { const prop = this.startNode(); const { type, start: startPos, startLoc } = this.state; if (type === 21) { return this.parseBindingRestProperty(prop); } else if (type === 134) { this.expectPlugin("destructuringPrivate", startLoc); this.classScope.usePrivateName(this.state.value, startLoc); prop.key = this.parsePrivateName(); } else { this.parsePropertyName(prop); } prop.method = false; this.parseObjPropValue(prop, startPos, startLoc, false, false, true, false); return prop; } parseAssignableListItem(allowModifiers, decorators) { const left = this.parseMaybeDefault(); this.parseAssignableListItemTypes(left); const elt = this.parseMaybeDefault(left.start, left.loc.start, left); if (decorators.length) { left.decorators = decorators; } return elt; } parseAssignableListItemTypes(param) { return param; } parseMaybeDefault(startPos, startLoc, left) { var _startLoc, _startPos, _left; startLoc = (_startLoc = startLoc) != null ? _startLoc : this.state.startLoc; startPos = (_startPos = startPos) != null ? _startPos : this.state.start; left = (_left = left) != null ? _left : this.parseBindingAtom(); if (!this.eat(29)) return left; const node = this.startNodeAt(startPos, startLoc); node.left = left; node.right = this.parseMaybeAssignAllowIn(); return this.finishNode(node, "AssignmentPattern"); } checkLVal(expr, contextDescription, bindingType = BIND_NONE, checkClashes, disallowLetBinding, strictModeChanged = false) { switch (expr.type) { case "Identifier": { const { name } = expr; if (this.state.strict && (strictModeChanged ? isStrictBindReservedWord(name, this.inModule) : isStrictBindOnlyReservedWord(name))) { this.raise(bindingType === BIND_NONE ? ErrorMessages.StrictEvalArguments : ErrorMessages.StrictEvalArgumentsBinding, { node: expr }, name); } if (checkClashes) { if (checkClashes.has(name)) { this.raise(ErrorMessages.ParamDupe, { node: expr }); } else { checkClashes.add(name); } } if (disallowLetBinding && name === "let") { this.raise(ErrorMessages.LetInLexicalBinding, { node: expr }); } if (!(bindingType & BIND_NONE)) { this.scope.declareName(name, bindingType, expr.loc.start); } break; } case "MemberExpression": if (bindingType !== BIND_NONE) { this.raise(ErrorMessages.InvalidPropertyBindingPattern, { node: expr }); } break; case "ObjectPattern": for (let prop of expr.properties) { if (this.isObjectProperty(prop)) prop = prop.value;else if (this.isObjectMethod(prop)) continue; this.checkLVal(prop, "object destructuring pattern", bindingType, checkClashes, disallowLetBinding); } break; case "ArrayPattern": for (const elem of expr.elements) { if (elem) { this.checkLVal(elem, "array destructuring pattern", bindingType, checkClashes, disallowLetBinding); } } break; case "AssignmentPattern": this.checkLVal(expr.left, "assignment pattern", bindingType, checkClashes); break; case "RestElement": this.checkLVal(expr.argument, "rest element", bindingType, checkClashes); break; case "ParenthesizedExpression": this.checkLVal(expr.expression, "parenthesized expression", bindingType, checkClashes); break; default: { this.raise(bindingType === BIND_NONE ? ErrorMessages.InvalidLhs : ErrorMessages.InvalidLhsBinding, { node: expr }, contextDescription); } } } checkToRestConversion(node) { if (node.argument.type !== "Identifier" && node.argument.type !== "MemberExpression") { this.raise(ErrorMessages.InvalidRestAssignmentPattern, { node: node.argument }); } } checkCommaAfterRest(close) { if (!this.match(12)) { return false; } this.raise(this.lookaheadCharCode() === close ? ErrorMessages.RestTrailingComma : ErrorMessages.ElementAfterRest, { at: this.state.startLoc }); return true; } } const invalidHackPipeBodies = new Map([["ArrowFunctionExpression", "arrow function"], ["AssignmentExpression", "assignment"], ["ConditionalExpression", "conditional"], ["YieldExpression", "yield"]]); class ExpressionParser extends LValParser { checkProto(prop, isRecord, protoRef, refExpressionErrors) { if (prop.type === "SpreadElement" || this.isObjectMethod(prop) || prop.computed || prop.shorthand) { return; } const key = prop.key; const name = key.type === "Identifier" ? key.name : key.value; if (name === "__proto__") { if (isRecord) { this.raise(ErrorMessages.RecordNoProto, { node: key }); return; } if (protoRef.used) { if (refExpressionErrors) { if (refExpressionErrors.doubleProtoLoc === null) { refExpressionErrors.doubleProtoLoc = key.loc.start; } } else { this.raise(ErrorMessages.DuplicateProto, { node: key }); } } protoRef.used = true; } } shouldExitDescending(expr, potentialArrowAt) { return expr.type === "ArrowFunctionExpression" && expr.start === potentialArrowAt; } getExpression() { this.enterInitialScopes(); this.nextToken(); const expr = this.parseExpression(); if (!this.match(135)) { this.unexpected(); } this.finalizeRemainingComments(); expr.comments = this.state.comments; expr.errors = this.state.errors; if (this.options.tokens) { expr.tokens = this.tokens; } return expr; } parseExpression(disallowIn, refExpressionErrors) { if (disallowIn) { return this.disallowInAnd(() => this.parseExpressionBase(refExpressionErrors)); } return this.allowInAnd(() => this.parseExpressionBase(refExpressionErrors)); } parseExpressionBase(refExpressionErrors) { const startPos = this.state.start; const startLoc = this.state.startLoc; const expr = this.parseMaybeAssign(refExpressionErrors); if (this.match(12)) { const node = this.startNodeAt(startPos, startLoc); node.expressions = [expr]; while (this.eat(12)) { node.expressions.push(this.parseMaybeAssign(refExpressionErrors)); } this.toReferencedList(node.expressions); return this.finishNode(node, "SequenceExpression"); } return expr; } parseMaybeAssignDisallowIn(refExpressionErrors, afterLeftParse) { return this.disallowInAnd(() => this.parseMaybeAssign(refExpressionErrors, afterLeftParse)); } parseMaybeAssignAllowIn(refExpressionErrors, afterLeftParse) { return this.allowInAnd(() => this.parseMaybeAssign(refExpressionErrors, afterLeftParse)); } setOptionalParametersError(refExpressionErrors, resultError) { var _resultError$loc; refExpressionErrors.optionalParametersLoc = (_resultError$loc = resultError == null ? void 0 : resultError.loc) != null ? _resultError$loc : this.state.startLoc; } parseMaybeAssign(refExpressionErrors, afterLeftParse) { const startPos = this.state.start; const startLoc = this.state.startLoc; if (this.isContextual(105)) { if (this.prodParam.hasYield) { let left = this.parseYield(); if (afterLeftParse) { left = afterLeftParse.call(this, left, startPos, startLoc); } return left; } } let ownExpressionErrors; if (refExpressionErrors) { ownExpressionErrors = false; } else { refExpressionErrors = new ExpressionErrors(); ownExpressionErrors = true; } const { type } = this.state; if (type === 10 || tokenIsIdentifier(type)) { this.state.potentialArrowAt = this.state.start; } let left = this.parseMaybeConditional(refExpressionErrors); if (afterLeftParse) { left = afterLeftParse.call(this, left, startPos, startLoc); } if (tokenIsAssignment(this.state.type)) { const node = this.startNodeAt(startPos, startLoc); const operator = this.state.value; node.operator = operator; if (this.match(29)) { node.left = this.toAssignable(left, true); if (refExpressionErrors.doubleProtoLoc != null && refExpressionErrors.doubleProtoLoc.index >= startPos) { refExpressionErrors.doubleProtoLoc = null; } if (refExpressionErrors.shorthandAssignLoc != null && refExpressionErrors.shorthandAssignLoc.index >= startPos) { refExpressionErrors.shorthandAssignLoc = null; } if (refExpressionErrors.privateKeyLoc != null && refExpressionErrors.privateKeyLoc.index >= startPos) { this.checkDestructuringPrivate(refExpressionErrors); refExpressionErrors.privateKeyLoc = null; } } else { node.left = left; } this.checkLVal(left, "assignment expression"); this.next(); node.right = this.parseMaybeAssign(); return this.finishNode(node, "AssignmentExpression"); } else if (ownExpressionErrors) { this.checkExpressionErrors(refExpressionErrors, true); } return left; } parseMaybeConditional(refExpressionErrors) { const startPos = this.state.start; const startLoc = this.state.startLoc; const potentialArrowAt = this.state.potentialArrowAt; const expr = this.parseExprOps(refExpressionErrors); if (this.shouldExitDescending(expr, potentialArrowAt)) { return expr; } return this.parseConditional(expr, startPos, startLoc, refExpressionErrors); } parseConditional(expr, startPos, startLoc, refExpressionErrors) { if (this.eat(17)) { const node = this.startNodeAt(startPos, startLoc); node.test = expr; node.consequent = this.parseMaybeAssignAllowIn(); this.expect(14); node.alternate = this.parseMaybeAssign(); return this.finishNode(node, "ConditionalExpression"); } return expr; } parseMaybeUnaryOrPrivate(refExpressionErrors) { return this.match(134) ? this.parsePrivateName() : this.parseMaybeUnary(refExpressionErrors); } parseExprOps(refExpressionErrors) { const startPos = this.state.start; const startLoc = this.state.startLoc; const potentialArrowAt = this.state.potentialArrowAt; const expr = this.parseMaybeUnaryOrPrivate(refExpressionErrors); if (this.shouldExitDescending(expr, potentialArrowAt)) { return expr; } return this.parseExprOp(expr, startPos, startLoc, -1); } parseExprOp(left, leftStartPos, leftStartLoc, minPrec) { if (this.isPrivateName(left)) { const value = this.getPrivateNameSV(left); if (minPrec >= tokenOperatorPrecedence(58) || !this.prodParam.hasIn || !this.match(58)) { this.raise(ErrorMessages.PrivateInExpectedIn, { node: left }, value); } this.classScope.usePrivateName(value, left.loc.start); } const op = this.state.type; if (tokenIsOperator(op) && (this.prodParam.hasIn || !this.match(58))) { let prec = tokenOperatorPrecedence(op); if (prec > minPrec) { if (op === 39) { this.expectPlugin("pipelineOperator"); if (this.state.inFSharpPipelineDirectBody) { return left; } this.checkPipelineAtInfixOperator(left, leftStartLoc); } const node = this.startNodeAt(leftStartPos, leftStartLoc); node.left = left; node.operator = this.state.value; const logical = op === 41 || op === 42; const coalesce = op === 40; if (coalesce) { prec = tokenOperatorPrecedence(42); } this.next(); if (op === 39 && this.hasPlugin(["pipelineOperator", { proposal: "minimal" }])) { if (this.state.type === 96 && this.prodParam.hasAwait) { throw this.raise(ErrorMessages.UnexpectedAwaitAfterPipelineBody, { at: this.state.startLoc }); } } node.right = this.parseExprOpRightExpr(op, prec); this.finishNode(node, logical || coalesce ? "LogicalExpression" : "BinaryExpression"); const nextOp = this.state.type; if (coalesce && (nextOp === 41 || nextOp === 42) || logical && nextOp === 40) { throw this.raise(ErrorMessages.MixingCoalesceWithLogical, { at: this.state.startLoc }); } return this.parseExprOp(node, leftStartPos, leftStartLoc, minPrec); } } return left; } parseExprOpRightExpr(op, prec) { const startPos = this.state.start; const startLoc = this.state.startLoc; switch (op) { case 39: switch (this.getPluginOption("pipelineOperator", "proposal")) { case "hack": return this.withTopicBindingContext(() => { return this.parseHackPipeBody(); }); case "smart": return this.withTopicBindingContext(() => { if (this.prodParam.hasYield && this.isContextual(105)) { throw this.raise(ErrorMessages.PipeBodyIsTighter, { at: this.state.startLoc }, this.state.value); } return this.parseSmartPipelineBodyInStyle(this.parseExprOpBaseRightExpr(op, prec), startPos, startLoc); }); case "fsharp": return this.withSoloAwaitPermittingContext(() => { return this.parseFSharpPipelineBody(prec); }); } default: return this.parseExprOpBaseRightExpr(op, prec); } } parseExprOpBaseRightExpr(op, prec) { const startPos = this.state.start; const startLoc = this.state.startLoc; return this.parseExprOp(this.parseMaybeUnaryOrPrivate(), startPos, startLoc, tokenIsRightAssociative(op) ? prec - 1 : prec); } parseHackPipeBody() { var _body$extra; const { startLoc } = this.state; const body = this.parseMaybeAssign(); if (invalidHackPipeBodies.has(body.type) && !((_body$extra = body.extra) != null && _body$extra.parenthesized)) { this.raise(ErrorMessages.PipeUnparenthesizedBody, { at: startLoc }, invalidHackPipeBodies.get(body.type)); } if (!this.topicReferenceWasUsedInCurrentContext()) { this.raise(ErrorMessages.PipeTopicUnused, { at: startLoc }); } return body; } checkExponentialAfterUnary(node) { if (this.match(57)) { this.raise(ErrorMessages.UnexpectedTokenUnaryExponentiation, { node: node.argument }); } } parseMaybeUnary(refExpressionErrors, sawUnary) { const startPos = this.state.start; const startLoc = this.state.startLoc; const isAwait = this.isContextual(96); if (isAwait && this.isAwaitAllowed()) { this.next(); const expr = this.parseAwait(startPos, startLoc); if (!sawUnary) this.checkExponentialAfterUnary(expr); return expr; } const update = this.match(34); const node = this.startNode(); if (tokenIsPrefix(this.state.type)) { node.operator = this.state.value; node.prefix = true; if (this.match(72)) { this.expectPlugin("throwExpressions"); } const isDelete = this.match(89); this.next(); node.argument = this.parseMaybeUnary(null, true); this.checkExpressionErrors(refExpressionErrors, true); if (this.state.strict && isDelete) { const arg = node.argument; if (arg.type === "Identifier") { this.raise(ErrorMessages.StrictDelete, { node }); } else if (this.hasPropertyAsPrivateName(arg)) { this.raise(ErrorMessages.DeletePrivateField, { node }); } } if (!update) { if (!sawUnary) this.checkExponentialAfterUnary(node); return this.finishNode(node, "UnaryExpression"); } } const expr = this.parseUpdate(node, update, refExpressionErrors); if (isAwait) { const { type } = this.state; const startsExpr = this.hasPlugin("v8intrinsic") ? tokenCanStartExpression(type) : tokenCanStartExpression(type) && !this.match(54); if (startsExpr && !this.isAmbiguousAwait()) { this.raiseOverwrite(startLoc, ErrorMessages.AwaitNotInAsyncContext); return this.parseAwait(startPos, startLoc); } } return expr; } parseUpdate(node, update, refExpressionErrors) { if (update) { this.checkLVal(node.argument, "prefix operation"); return this.finishNode(node, "UpdateExpression"); } const startPos = this.state.start; const startLoc = this.state.startLoc; let expr = this.parseExprSubscripts(refExpressionErrors); if (this.checkExpressionErrors(refExpressionErrors, false)) return expr; while (tokenIsPostfix(this.state.type) && !this.canInsertSemicolon()) { const node = this.startNodeAt(startPos, startLoc); node.operator = this.state.value; node.prefix = false; node.argument = expr; this.checkLVal(expr, "postfix operation"); this.next(); expr = this.finishNode(node, "UpdateExpression"); } return expr; } parseExprSubscripts(refExpressionErrors) { const startPos = this.state.start; const startLoc = this.state.startLoc; const potentialArrowAt = this.state.potentialArrowAt; const expr = this.parseExprAtom(refExpressionErrors); if (this.shouldExitDescending(expr, potentialArrowAt)) { return expr; } return this.parseSubscripts(expr, startPos, startLoc); } parseSubscripts(base, startPos, startLoc, noCalls) { const state = { optionalChainMember: false, maybeAsyncArrow: this.atPossibleAsyncArrow(base), stop: false }; do { base = this.parseSubscript(base, startPos, startLoc, noCalls, state); state.maybeAsyncArrow = false; } while (!state.stop); return base; } parseSubscript(base, startPos, startLoc, noCalls, state) { const { type } = this.state; if (!noCalls && type === 15) { return this.parseBind(base, startPos, startLoc, noCalls, state); } else if (tokenIsTemplate(type)) { return this.parseTaggedTemplateExpression(base, startPos, startLoc, state); } let optional = false; if (type === 18) { if (noCalls && this.lookaheadCharCode() === 40) { state.stop = true; return base; } state.optionalChainMember = optional = true; this.next(); } if (!noCalls && this.match(10)) { return this.parseCoverCallAndAsyncArrowHead(base, startPos, startLoc, state, optional); } else { const computed = this.eat(0); if (computed || optional || this.eat(16)) { return this.parseMember(base, startPos, startLoc, state, computed, optional); } else { state.stop = true; return base; } } } parseMember(base, startPos, startLoc, state, computed, optional) { const node = this.startNodeAt(startPos, startLoc); node.object = base; node.computed = computed; if (computed) { node.property = this.parseExpression(); this.expect(3); } else if (this.match(134)) { if (base.type === "Super") { this.raise(ErrorMessages.SuperPrivateField, { at: startLoc }); } this.classScope.usePrivateName(this.state.value, this.state.startLoc); node.property = this.parsePrivateName(); } else { node.property = this.parseIdentifier(true); } if (state.optionalChainMember) { node.optional = optional; return this.finishNode(node, "OptionalMemberExpression"); } else { return this.finishNode(node, "MemberExpression"); } } parseBind(base, startPos, startLoc, noCalls, state) { const node = this.startNodeAt(startPos, startLoc); node.object = base; this.next(); node.callee = this.parseNoCallExpr(); state.stop = true; return this.parseSubscripts(this.finishNode(node, "BindExpression"), startPos, startLoc, noCalls); } parseCoverCallAndAsyncArrowHead(base, startPos, startLoc, state, optional) { const oldMaybeInArrowParameters = this.state.maybeInArrowParameters; let refExpressionErrors = null; this.state.maybeInArrowParameters = true; this.next(); let node = this.startNodeAt(startPos, startLoc); node.callee = base; const { maybeAsyncArrow, optionalChainMember } = state; if (maybeAsyncArrow) { this.expressionScope.enter(newAsyncArrowScope()); refExpressionErrors = new ExpressionErrors(); } if (optionalChainMember) { node.optional = optional; } if (optional) { node.arguments = this.parseCallExpressionArguments(11); } else { node.arguments = this.parseCallExpressionArguments(11, base.type === "Import", base.type !== "Super", node, refExpressionErrors); } this.finishCallExpression(node, optionalChainMember); if (maybeAsyncArrow && this.shouldParseAsyncArrow() && !optional) { state.stop = true; this.checkDestructuringPrivate(refExpressionErrors); this.expressionScope.validateAsPattern(); this.expressionScope.exit(); node = this.parseAsyncArrowFromCallExpression(this.startNodeAt(startPos, startLoc), node); } else { if (maybeAsyncArrow) { this.checkExpressionErrors(refExpressionErrors, true); this.expressionScope.exit(); } this.toReferencedArguments(node); } this.state.maybeInArrowParameters = oldMaybeInArrowParameters; return node; } toReferencedArguments(node, isParenthesizedExpr) { this.toReferencedListDeep(node.arguments, isParenthesizedExpr); } parseTaggedTemplateExpression(base, startPos, startLoc, state) { const node = this.startNodeAt(startPos, startLoc); node.tag = base; node.quasi = this.parseTemplate(true); if (state.optionalChainMember) { this.raise(ErrorMessages.OptionalChainingNoTemplate, { at: startLoc }); } return this.finishNode(node, "TaggedTemplateExpression"); } atPossibleAsyncArrow(base) { return base.type === "Identifier" && base.name === "async" && this.state.lastTokEndLoc.index === base.end && !this.canInsertSemicolon() && base.end - base.start === 5 && base.start === this.state.potentialArrowAt; } finishCallExpression(node, optional) { if (node.callee.type === "Import") { if (node.arguments.length === 2) { { if (!this.hasPlugin("moduleAttributes")) { this.expectPlugin("importAssertions"); } } } if (node.arguments.length === 0 || node.arguments.length > 2) { this.raise(ErrorMessages.ImportCallArity, { node }, this.hasPlugin("importAssertions") || this.hasPlugin("moduleAttributes") ? "one or two arguments" : "one argument"); } else { for (const arg of node.arguments) { if (arg.type === "SpreadElement") { this.raise(ErrorMessages.ImportCallSpreadArgument, { node: arg }); } } } } return this.finishNode(node, optional ? "OptionalCallExpression" : "CallExpression"); } parseCallExpressionArguments(close, dynamicImport, allowPlaceholder, nodeForExtra, refExpressionErrors) { const elts = []; let first = true; const oldInFSharpPipelineDirectBody = this.state.inFSharpPipelineDirectBody; this.state.inFSharpPipelineDirectBody = false; while (!this.eat(close)) { if (first) { first = false; } else { this.expect(12); if (this.match(close)) { if (dynamicImport && !this.hasPlugin("importAssertions") && !this.hasPlugin("moduleAttributes")) { this.raise(ErrorMessages.ImportCallArgumentTrailingComma, { at: this.state.lastTokStartLoc }); } if (nodeForExtra) { this.addTrailingCommaExtraToNode(nodeForExtra); } this.next(); break; } } elts.push(this.parseExprListItem(false, refExpressionErrors, allowPlaceholder)); } this.state.inFSharpPipelineDirectBody = oldInFSharpPipelineDirectBody; return elts; } shouldParseAsyncArrow() { return this.match(19) && !this.canInsertSemicolon(); } parseAsyncArrowFromCallExpression(node, call) { var _call$extra; this.resetPreviousNodeTrailingComments(call); this.expect(19); this.parseArrowExpression(node, call.arguments, true, (_call$extra = call.extra) == null ? void 0 : _call$extra.trailingCommaLoc); if (call.innerComments) { setInnerComments(node, call.innerComments); } if (call.callee.trailingComments) { setInnerComments(node, call.callee.trailingComments); } return node; } parseNoCallExpr() { const startPos = this.state.start; const startLoc = this.state.startLoc; return this.parseSubscripts(this.parseExprAtom(), startPos, startLoc, true); } parseExprAtom(refExpressionErrors) { let node; const { type } = this.state; switch (type) { case 79: return this.parseSuper(); case 83: node = this.startNode(); this.next(); if (this.match(16)) { return this.parseImportMetaProperty(node); } if (!this.match(10)) { this.raise(ErrorMessages.UnsupportedImport, { at: this.state.lastTokStartLoc }); } return this.finishNode(node, "Import"); case 78: node = this.startNode(); this.next(); return this.finishNode(node, "ThisExpression"); case 90: { return this.parseDo(this.startNode(), false); } case 56: case 31: { this.readRegexp(); return this.parseRegExpLiteral(this.state.value); } case 130: return this.parseNumericLiteral(this.state.value); case 131: return this.parseBigIntLiteral(this.state.value); case 132: return this.parseDecimalLiteral(this.state.value); case 129: return this.parseStringLiteral(this.state.value); case 84: return this.parseNullLiteral(); case 85: return this.parseBooleanLiteral(true); case 86: return this.parseBooleanLiteral(false); case 10: { const canBeArrow = this.state.potentialArrowAt === this.state.start; return this.parseParenAndDistinguishExpression(canBeArrow); } case 2: case 1: { return this.parseArrayLike(this.state.type === 2 ? 4 : 3, false, true); } case 0: { return this.parseArrayLike(3, true, false, refExpressionErrors); } case 6: case 7: { return this.parseObjectLike(this.state.type === 6 ? 9 : 8, false, true); } case 5: { return this.parseObjectLike(8, false, false, refExpressionErrors); } case 68: return this.parseFunctionOrFunctionSent(); case 26: this.parseDecorators(); case 80: node = this.startNode(); this.takeDecorators(node); return this.parseClass(node, false); case 77: return this.parseNewOrNewTarget(); case 25: case 24: return this.parseTemplate(false); case 15: { node = this.startNode(); this.next(); node.object = null; const callee = node.callee = this.parseNoCallExpr(); if (callee.type === "MemberExpression") { return this.finishNode(node, "BindExpression"); } else { throw this.raise(ErrorMessages.UnsupportedBind, { node: callee }); } } case 134: { this.raise(ErrorMessages.PrivateInExpectedIn, { at: this.state.startLoc }, this.state.value); return this.parsePrivateName(); } case 33: { return this.parseTopicReferenceThenEqualsSign(54, "%"); } case 32: { return this.parseTopicReferenceThenEqualsSign(44, "^"); } case 37: case 38: { return this.parseTopicReference("hack"); } case 44: case 54: case 27: { const pipeProposal = this.getPluginOption("pipelineOperator", "proposal"); if (pipeProposal) { return this.parseTopicReference(pipeProposal); } else { throw this.unexpected(); } } case 47: { const lookaheadCh = this.input.codePointAt(this.nextTokenStart()); if (isIdentifierStart(lookaheadCh) || lookaheadCh === 62) { this.expectOnePlugin(["jsx", "flow", "typescript"]); break; } else { throw this.unexpected(); } } default: if (tokenIsIdentifier(type)) { if (this.isContextual(123) && this.lookaheadCharCode() === 123 && !this.hasFollowingLineBreak()) { return this.parseModuleExpression(); } const canBeArrow = this.state.potentialArrowAt === this.state.start; const containsEsc = this.state.containsEsc; const id = this.parseIdentifier(); if (!containsEsc && id.name === "async" && !this.canInsertSemicolon()) { const { type } = this.state; if (type === 68) { this.resetPreviousNodeTrailingComments(id); this.next(); return this.parseFunction(this.startNodeAtNode(id), undefined, true); } else if (tokenIsIdentifier(type)) { if (this.lookaheadCharCode() === 61) { return this.parseAsyncArrowUnaryFunction(this.startNodeAtNode(id)); } else { return id; } } else if (type === 90) { this.resetPreviousNodeTrailingComments(id); return this.parseDo(this.startNodeAtNode(id), true); } } if (canBeArrow && this.match(19) && !this.canInsertSemicolon()) { this.next(); return this.parseArrowExpression(this.startNodeAtNode(id), [id], false); } return id; } else { throw this.unexpected(); } } } parseTopicReferenceThenEqualsSign(topicTokenType, topicTokenValue) { const pipeProposal = this.getPluginOption("pipelineOperator", "proposal"); if (pipeProposal) { this.state.type = topicTokenType; this.state.value = topicTokenValue; this.state.pos--; this.state.end--; this.state.endLoc = createPositionWithColumnOffset(this.state.endLoc, -1); return this.parseTopicReference(pipeProposal); } else { throw this.unexpected(); } } parseTopicReference(pipeProposal) { const node = this.startNode(); const startLoc = this.state.startLoc; const tokenType = this.state.type; this.next(); return this.finishTopicReference(node, startLoc, pipeProposal, tokenType); } finishTopicReference(node, startLoc, pipeProposal, tokenType) { if (this.testTopicReferenceConfiguration(pipeProposal, startLoc, tokenType)) { const nodeType = pipeProposal === "smart" ? "PipelinePrimaryTopicReference" : "TopicReference"; if (!this.topicReferenceIsAllowedInCurrentContext()) { this.raise(pipeProposal === "smart" ? ErrorMessages.PrimaryTopicNotAllowed : ErrorMessages.PipeTopicUnbound, { at: startLoc }); } this.registerTopicReference(); return this.finishNode(node, nodeType); } else { throw this.raise(ErrorMessages.PipeTopicUnconfiguredToken, { at: startLoc }, tokenLabelName(tokenType)); } } testTopicReferenceConfiguration(pipeProposal, startLoc, tokenType) { switch (pipeProposal) { case "hack": { return this.hasPlugin(["pipelineOperator", { topicToken: tokenLabelName(tokenType) }]); } case "smart": return tokenType === 27; default: throw this.raise(ErrorMessages.PipeTopicRequiresHackPipes, { at: startLoc }); } } parseAsyncArrowUnaryFunction(node) { this.prodParam.enter(functionFlags(true, this.prodParam.hasYield)); const params = [this.parseIdentifier()]; this.prodParam.exit(); if (this.hasPrecedingLineBreak()) { this.raise(ErrorMessages.LineTerminatorBeforeArrow, { at: this.state.curPosition() }); } this.expect(19); this.parseArrowExpression(node, params, true); return node; } parseDo(node, isAsync) { this.expectPlugin("doExpressions"); if (isAsync) { this.expectPlugin("asyncDoExpressions"); } node.async = isAsync; this.next(); const oldLabels = this.state.labels; this.state.labels = []; if (isAsync) { this.prodParam.enter(PARAM_AWAIT); node.body = this.parseBlock(); this.prodParam.exit(); } else { node.body = this.parseBlock(); } this.state.labels = oldLabels; return this.finishNode(node, "DoExpression"); } parseSuper() { const node = this.startNode(); this.next(); if (this.match(10) && !this.scope.allowDirectSuper && !this.options.allowSuperOutsideMethod) { this.raise(ErrorMessages.SuperNotAllowed, { node }); } else if (!this.scope.allowSuper && !this.options.allowSuperOutsideMethod) { this.raise(ErrorMessages.UnexpectedSuper, { node }); } if (!this.match(10) && !this.match(0) && !this.match(16)) { this.raise(ErrorMessages.UnsupportedSuper, { node }); } return this.finishNode(node, "Super"); } parsePrivateName() { const node = this.startNode(); const id = this.startNodeAt(this.state.start + 1, new Position(this.state.curLine, this.state.start + 1 - this.state.lineStart, this.state.start + 1)); const name = this.state.value; this.next(); node.id = this.createIdentifier(id, name); return this.finishNode(node, "PrivateName"); } parseFunctionOrFunctionSent() { const node = this.startNode(); this.next(); if (this.prodParam.hasYield && this.match(16)) { const meta = this.createIdentifier(this.startNodeAtNode(node), "function"); this.next(); if (this.match(102)) { this.expectPlugin("functionSent"); } else if (!this.hasPlugin("functionSent")) { this.unexpected(); } return this.parseMetaProperty(node, meta, "sent"); } return this.parseFunction(node); } parseMetaProperty(node, meta, propertyName) { node.meta = meta; const containsEsc = this.state.containsEsc; node.property = this.parseIdentifier(true); if (node.property.name !== propertyName || containsEsc) { this.raise(ErrorMessages.UnsupportedMetaProperty, { node: node.property }, meta.name, propertyName); } return this.finishNode(node, "MetaProperty"); } parseImportMetaProperty(node) { const id = this.createIdentifier(this.startNodeAtNode(node), "import"); this.next(); if (this.isContextual(100)) { if (!this.inModule) { this.raise(SourceTypeModuleErrorMessages.ImportMetaOutsideModule, { node: id }); } this.sawUnambiguousESM = true; } return this.parseMetaProperty(node, id, "meta"); } parseLiteralAtNode(value, type, node) { this.addExtra(node, "rawValue", value); this.addExtra(node, "raw", this.input.slice(node.start, this.state.end)); node.value = value; this.next(); return this.finishNode(node, type); } parseLiteral(value, type) { const node = this.startNode(); return this.parseLiteralAtNode(value, type, node); } parseStringLiteral(value) { return this.parseLiteral(value, "StringLiteral"); } parseNumericLiteral(value) { return this.parseLiteral(value, "NumericLiteral"); } parseBigIntLiteral(value) { return this.parseLiteral(value, "BigIntLiteral"); } parseDecimalLiteral(value) { return this.parseLiteral(value, "DecimalLiteral"); } parseRegExpLiteral(value) { const node = this.parseLiteral(value.value, "RegExpLiteral"); node.pattern = value.pattern; node.flags = value.flags; return node; } parseBooleanLiteral(value) { const node = this.startNode(); node.value = value; this.next(); return this.finishNode(node, "BooleanLiteral"); } parseNullLiteral() { const node = this.startNode(); this.next(); return this.finishNode(node, "NullLiteral"); } parseParenAndDistinguishExpression(canBeArrow) { const startPos = this.state.start; const startLoc = this.state.startLoc; let val; this.next(); this.expressionScope.enter(newArrowHeadScope()); const oldMaybeInArrowParameters = this.state.maybeInArrowParameters; const oldInFSharpPipelineDirectBody = this.state.inFSharpPipelineDirectBody; this.state.maybeInArrowParameters = true; this.state.inFSharpPipelineDirectBody = false; const innerStartPos = this.state.start; const innerStartLoc = this.state.startLoc; const exprList = []; const refExpressionErrors = new ExpressionErrors(); let first = true; let spreadStartLoc; let optionalCommaStartLoc; while (!this.match(11)) { if (first) { first = false; } else { this.expect(12, refExpressionErrors.optionalParametersLoc === null ? null : refExpressionErrors.optionalParametersLoc); if (this.match(11)) { optionalCommaStartLoc = this.state.startLoc; break; } } if (this.match(21)) { const spreadNodeStartPos = this.state.start; const spreadNodeStartLoc = this.state.startLoc; spreadStartLoc = this.state.startLoc; exprList.push(this.parseParenItem(this.parseRestBinding(), spreadNodeStartPos, spreadNodeStartLoc)); if (!this.checkCommaAfterRest(41)) { break; } } else { exprList.push(this.parseMaybeAssignAllowIn(refExpressionErrors, this.parseParenItem)); } } const innerEndLoc = this.state.lastTokEndLoc; this.expect(11); this.state.maybeInArrowParameters = oldMaybeInArrowParameters; this.state.inFSharpPipelineDirectBody = oldInFSharpPipelineDirectBody; let arrowNode = this.startNodeAt(startPos, startLoc); if (canBeArrow && this.shouldParseArrow(exprList) && (arrowNode = this.parseArrow(arrowNode))) { this.checkDestructuringPrivate(refExpressionErrors); this.expressionScope.validateAsPattern(); this.expressionScope.exit(); this.parseArrowExpression(arrowNode, exprList, false); return arrowNode; } this.expressionScope.exit(); if (!exprList.length) { this.unexpected(this.state.lastTokStartLoc); } if (optionalCommaStartLoc) this.unexpected(optionalCommaStartLoc); if (spreadStartLoc) this.unexpected(spreadStartLoc); this.checkExpressionErrors(refExpressionErrors, true); this.toReferencedListDeep(exprList, true); if (exprList.length > 1) { val = this.startNodeAt(innerStartPos, innerStartLoc); val.expressions = exprList; this.finishNode(val, "SequenceExpression"); this.resetEndLocation(val, innerEndLoc); } else { val = exprList[0]; } if (!this.options.createParenthesizedExpressions) { this.addExtra(val, "parenthesized", true); this.addExtra(val, "parenStart", startPos); this.takeSurroundingComments(val, startPos, this.state.lastTokEndLoc.index); return val; } const parenExpression = this.startNodeAt(startPos, startLoc); parenExpression.expression = val; this.finishNode(parenExpression, "ParenthesizedExpression"); return parenExpression; } shouldParseArrow(params) { return !this.canInsertSemicolon(); } parseArrow(node) { if (this.eat(19)) { return node; } } parseParenItem(node, startPos, startLoc) { return node; } parseNewOrNewTarget() { const node = this.startNode(); this.next(); if (this.match(16)) { const meta = this.createIdentifier(this.startNodeAtNode(node), "new"); this.next(); const metaProp = this.parseMetaProperty(node, meta, "target"); if (!this.scope.inNonArrowFunction && !this.scope.inClass) { this.raise(ErrorMessages.UnexpectedNewTarget, { node: metaProp }); } return metaProp; } return this.parseNew(node); } parseNew(node) { node.callee = this.parseNoCallExpr(); if (node.callee.type === "Import") { this.raise(ErrorMessages.ImportCallNotNewExpression, { node: node.callee }); } else if (this.isOptionalChain(node.callee)) { this.raise(ErrorMessages.OptionalChainingNoNew, { at: this.state.lastTokEndLoc }); } else if (this.eat(18)) { this.raise(ErrorMessages.OptionalChainingNoNew, { at: this.state.startLoc }); } this.parseNewArguments(node); return this.finishNode(node, "NewExpression"); } parseNewArguments(node) { if (this.eat(10)) { const args = this.parseExprList(11); this.toReferencedList(args); node.arguments = args; } else { node.arguments = []; } } parseTemplateElement(isTagged) { const { start, startLoc, end, value } = this.state; const elemStart = start + 1; const elem = this.startNodeAt(elemStart, createPositionWithColumnOffset(startLoc, 1)); if (value === null) { if (!isTagged) { this.raise(ErrorMessages.InvalidEscapeSequenceTemplate, { at: createPositionWithColumnOffset(startLoc, 2) }); } } const isTail = this.match(24); const endOffset = isTail ? -1 : -2; const elemEnd = end + endOffset; elem.value = { raw: this.input.slice(elemStart, elemEnd).replace(/\r\n?/g, "\n"), cooked: value === null ? null : value.slice(1, endOffset) }; elem.tail = isTail; this.next(); this.finishNode(elem, "TemplateElement"); this.resetEndLocation(elem, createPositionWithColumnOffset(this.state.lastTokEndLoc, endOffset)); return elem; } parseTemplate(isTagged) { const node = this.startNode(); node.expressions = []; let curElt = this.parseTemplateElement(isTagged); node.quasis = [curElt]; while (!curElt.tail) { node.expressions.push(this.parseTemplateSubstitution()); this.readTemplateContinuation(); node.quasis.push(curElt = this.parseTemplateElement(isTagged)); } return this.finishNode(node, "TemplateLiteral"); } parseTemplateSubstitution() { return this.parseExpression(); } parseObjectLike(close, isPattern, isRecord, refExpressionErrors) { if (isRecord) { this.expectPlugin("recordAndTuple"); } const oldInFSharpPipelineDirectBody = this.state.inFSharpPipelineDirectBody; this.state.inFSharpPipelineDirectBody = false; const propHash = Object.create(null); let first = true; const node = this.startNode(); node.properties = []; this.next(); while (!this.match(close)) { if (first) { first = false; } else { this.expect(12); if (this.match(close)) { this.addTrailingCommaExtraToNode(node); break; } } let prop; if (isPattern) { prop = this.parseBindingProperty(); } else { prop = this.parsePropertyDefinition(refExpressionErrors); this.checkProto(prop, isRecord, propHash, refExpressionErrors); } if (isRecord && !this.isObjectProperty(prop) && prop.type !== "SpreadElement") { this.raise(ErrorMessages.InvalidRecordProperty, { node: prop }); } if (prop.shorthand) { this.addExtra(prop, "shorthand", true); } node.properties.push(prop); } this.next(); this.state.inFSharpPipelineDirectBody = oldInFSharpPipelineDirectBody; let type = "ObjectExpression"; if (isPattern) { type = "ObjectPattern"; } else if (isRecord) { type = "RecordExpression"; } return this.finishNode(node, type); } addTrailingCommaExtraToNode(node) { this.addExtra(node, "trailingComma", this.state.lastTokStart); this.addExtra(node, "trailingCommaLoc", this.state.lastTokStartLoc, false); } maybeAsyncOrAccessorProp(prop) { return !prop.computed && prop.key.type === "Identifier" && (this.isLiteralPropertyName() || this.match(0) || this.match(55)); } parsePropertyDefinition(refExpressionErrors) { let decorators = []; if (this.match(26)) { if (this.hasPlugin("decorators")) { this.raise(ErrorMessages.UnsupportedPropertyDecorator, { at: this.state.startLoc }); } while (this.match(26)) { decorators.push(this.parseDecorator()); } } const prop = this.startNode(); let isAsync = false; let isAccessor = false; let startPos; let startLoc; if (this.match(21)) { if (decorators.length) this.unexpected(); return this.parseSpread(); } if (decorators.length) { prop.decorators = decorators; decorators = []; } prop.method = false; if (refExpressionErrors) { startPos = this.state.start; startLoc = this.state.startLoc; } let isGenerator = this.eat(55); this.parsePropertyNamePrefixOperator(prop); const containsEsc = this.state.containsEsc; const key = this.parsePropertyName(prop, refExpressionErrors); if (!isGenerator && !containsEsc && this.maybeAsyncOrAccessorProp(prop)) { const keyName = key.name; if (keyName === "async" && !this.hasPrecedingLineBreak()) { isAsync = true; this.resetPreviousNodeTrailingComments(key); isGenerator = this.eat(55); this.parsePropertyName(prop); } if (keyName === "get" || keyName === "set") { isAccessor = true; this.resetPreviousNodeTrailingComments(key); prop.kind = keyName; if (this.match(55)) { isGenerator = true; this.raise(ErrorMessages.AccessorIsGenerator, { at: this.state.curPosition() }, keyName); this.next(); } this.parsePropertyName(prop); } } this.parseObjPropValue(prop, startPos, startLoc, isGenerator, isAsync, false, isAccessor, refExpressionErrors); return prop; } getGetterSetterExpectedParamCount(method) { return method.kind === "get" ? 0 : 1; } getObjectOrClassMethodParams(method) { return method.params; } checkGetterSetterParams(method) { var _params; const paramCount = this.getGetterSetterExpectedParamCount(method); const params = this.getObjectOrClassMethodParams(method); if (params.length !== paramCount) { this.raise(method.kind === "get" ? ErrorMessages.BadGetterArity : ErrorMessages.BadSetterArity, { node: method }); } if (method.kind === "set" && ((_params = params[params.length - 1]) == null ? void 0 : _params.type) === "RestElement") { this.raise(ErrorMessages.BadSetterRestParameter, { node: method }); } } parseObjectMethod(prop, isGenerator, isAsync, isPattern, isAccessor) { if (isAccessor) { this.parseMethod(prop, isGenerator, false, false, false, "ObjectMethod"); this.checkGetterSetterParams(prop); return prop; } if (isAsync || isGenerator || this.match(10)) { if (isPattern) this.unexpected(); prop.kind = "method"; prop.method = true; return this.parseMethod(prop, isGenerator, isAsync, false, false, "ObjectMethod"); } } parseObjectProperty(prop, startPos, startLoc, isPattern, refExpressionErrors) { prop.shorthand = false; if (this.eat(14)) { prop.value = isPattern ? this.parseMaybeDefault(this.state.start, this.state.startLoc) : this.parseMaybeAssignAllowIn(refExpressionErrors); return this.finishNode(prop, "ObjectProperty"); } if (!prop.computed && prop.key.type === "Identifier") { this.checkReservedWord(prop.key.name, prop.key.loc.start, true, false); if (isPattern) { prop.value = this.parseMaybeDefault(startPos, startLoc, cloneIdentifier(prop.key)); } else if (this.match(29)) { const shorthandAssignLoc = this.state.startLoc; if (refExpressionErrors != null) { if (refExpressionErrors.shorthandAssignLoc === null) { refExpressionErrors.shorthandAssignLoc = shorthandAssignLoc; } } else { this.raise(ErrorMessages.InvalidCoverInitializedName, { at: shorthandAssignLoc }); } prop.value = this.parseMaybeDefault(startPos, startLoc, cloneIdentifier(prop.key)); } else { prop.value = cloneIdentifier(prop.key); } prop.shorthand = true; return this.finishNode(prop, "ObjectProperty"); } } parseObjPropValue(prop, startPos, startLoc, isGenerator, isAsync, isPattern, isAccessor, refExpressionErrors) { const node = this.parseObjectMethod(prop, isGenerator, isAsync, isPattern, isAccessor) || this.parseObjectProperty(prop, startPos, startLoc, isPattern, refExpressionErrors); if (!node) this.unexpected(); return node; } parsePropertyName(prop, refExpressionErrors) { if (this.eat(0)) { prop.computed = true; prop.key = this.parseMaybeAssignAllowIn(); this.expect(3); } else { const { type, value } = this.state; let key; if (tokenIsKeywordOrIdentifier(type)) { key = this.parseIdentifier(true); } else { switch (type) { case 130: key = this.parseNumericLiteral(value); break; case 129: key = this.parseStringLiteral(value); break; case 131: key = this.parseBigIntLiteral(value); break; case 132: key = this.parseDecimalLiteral(value); break; case 134: { const privateKeyLoc = this.state.startLoc; if (refExpressionErrors != null) { if (refExpressionErrors.privateKeyLoc === null) { refExpressionErrors.privateKeyLoc = privateKeyLoc; } } else { this.raise(ErrorMessages.UnexpectedPrivateField, { at: privateKeyLoc }); } key = this.parsePrivateName(); break; } default: throw this.unexpected(); } } prop.key = key; if (type !== 134) { prop.computed = false; } } return prop.key; } initFunction(node, isAsync) { node.id = null; node.generator = false; node.async = !!isAsync; } parseMethod(node, isGenerator, isAsync, isConstructor, allowDirectSuper, type, inClassScope = false) { this.initFunction(node, isAsync); node.generator = !!isGenerator; const allowModifiers = isConstructor; this.scope.enter(SCOPE_FUNCTION | SCOPE_SUPER | (inClassScope ? SCOPE_CLASS : 0) | (allowDirectSuper ? SCOPE_DIRECT_SUPER : 0)); this.prodParam.enter(functionFlags(isAsync, node.generator)); this.parseFunctionParams(node, allowModifiers); this.parseFunctionBodyAndFinish(node, type, true); this.prodParam.exit(); this.scope.exit(); return node; } parseArrayLike(close, canBePattern, isTuple, refExpressionErrors) { if (isTuple) { this.expectPlugin("recordAndTuple"); } const oldInFSharpPipelineDirectBody = this.state.inFSharpPipelineDirectBody; this.state.inFSharpPipelineDirectBody = false; const node = this.startNode(); this.next(); node.elements = this.parseExprList(close, !isTuple, refExpressionErrors, node); this.state.inFSharpPipelineDirectBody = oldInFSharpPipelineDirectBody; return this.finishNode(node, isTuple ? "TupleExpression" : "ArrayExpression"); } parseArrowExpression(node, params, isAsync, trailingCommaLoc) { this.scope.enter(SCOPE_FUNCTION | SCOPE_ARROW); let flags = functionFlags(isAsync, false); if (!this.match(5) && this.prodParam.hasIn) { flags |= PARAM_IN; } this.prodParam.enter(flags); this.initFunction(node, isAsync); const oldMaybeInArrowParameters = this.state.maybeInArrowParameters; if (params) { this.state.maybeInArrowParameters = true; this.setArrowFunctionParameters(node, params, trailingCommaLoc); } this.state.maybeInArrowParameters = false; this.parseFunctionBody(node, true); this.prodParam.exit(); this.scope.exit(); this.state.maybeInArrowParameters = oldMaybeInArrowParameters; return this.finishNode(node, "ArrowFunctionExpression"); } setArrowFunctionParameters(node, params, trailingCommaLoc) { node.params = this.toAssignableList(params, trailingCommaLoc, false); } parseFunctionBodyAndFinish(node, type, isMethod = false) { this.parseFunctionBody(node, false, isMethod); this.finishNode(node, type); } parseFunctionBody(node, allowExpression, isMethod = false) { const isExpression = allowExpression && !this.match(5); this.expressionScope.enter(newExpressionScope()); if (isExpression) { node.body = this.parseMaybeAssign(); this.checkParams(node, false, allowExpression, false); } else { const oldStrict = this.state.strict; const oldLabels = this.state.labels; this.state.labels = []; this.prodParam.enter(this.prodParam.currentFlags() | PARAM_RETURN); node.body = this.parseBlock(true, false, hasStrictModeDirective => { const nonSimple = !this.isSimpleParamList(node.params); if (hasStrictModeDirective && nonSimple) { const errorOrigin = (node.kind === "method" || node.kind === "constructor") && !!node.key ? { at: node.key.loc.end } : { node }; this.raise(ErrorMessages.IllegalLanguageModeDirective, errorOrigin); } const strictModeChanged = !oldStrict && this.state.strict; this.checkParams(node, !this.state.strict && !allowExpression && !isMethod && !nonSimple, allowExpression, strictModeChanged); if (this.state.strict && node.id) { this.checkLVal(node.id, "function name", BIND_OUTSIDE, undefined, undefined, strictModeChanged); } }); this.prodParam.exit(); this.state.labels = oldLabels; } this.expressionScope.exit(); } isSimpleParamList(params) { for (let i = 0, len = params.length; i < len; i++) { if (params[i].type !== "Identifier") return false; } return true; } checkParams(node, allowDuplicates, isArrowFunction, strictModeChanged = true) { const checkClashes = new Set(); for (const param of node.params) { this.checkLVal(param, "function parameter list", BIND_VAR, allowDuplicates ? null : checkClashes, undefined, strictModeChanged); } } parseExprList(close, allowEmpty, refExpressionErrors, nodeForExtra) { const elts = []; let first = true; while (!this.eat(close)) { if (first) { first = false; } else { this.expect(12); if (this.match(close)) { if (nodeForExtra) { this.addTrailingCommaExtraToNode(nodeForExtra); } this.next(); break; } } elts.push(this.parseExprListItem(allowEmpty, refExpressionErrors)); } return elts; } parseExprListItem(allowEmpty, refExpressionErrors, allowPlaceholder) { let elt; if (this.match(12)) { if (!allowEmpty) { this.raise(ErrorMessages.UnexpectedToken, { at: this.state.curPosition() }, ","); } elt = null; } else if (this.match(21)) { const spreadNodeStartPos = this.state.start; const spreadNodeStartLoc = this.state.startLoc; elt = this.parseParenItem(this.parseSpread(refExpressionErrors), spreadNodeStartPos, spreadNodeStartLoc); } else if (this.match(17)) { this.expectPlugin("partialApplication"); if (!allowPlaceholder) { this.raise(ErrorMessages.UnexpectedArgumentPlaceholder, { at: this.state.startLoc }); } const node = this.startNode(); this.next(); elt = this.finishNode(node, "ArgumentPlaceholder"); } else { elt = this.parseMaybeAssignAllowIn(refExpressionErrors, this.parseParenItem); } return elt; } parseIdentifier(liberal) { const node = this.startNode(); const name = this.parseIdentifierName(node.start, liberal); return this.createIdentifier(node, name); } createIdentifier(node, name) { node.name = name; node.loc.identifierName = name; return this.finishNode(node, "Identifier"); } parseIdentifierName(pos, liberal) { let name; const { startLoc, type } = this.state; if (tokenIsKeywordOrIdentifier(type)) { name = this.state.value; } else { throw this.unexpected(); } const tokenIsKeyword = tokenKeywordOrIdentifierIsKeyword(type); if (liberal) { if (tokenIsKeyword) { this.replaceToken(128); } } else { this.checkReservedWord(name, startLoc, tokenIsKeyword, false); } this.next(); return name; } checkReservedWord(word, startLoc, checkKeywords, isBinding) { if (word.length > 10) { return; } if (!canBeReservedWord(word)) { return; } if (word === "yield") { if (this.prodParam.hasYield) { this.raise(ErrorMessages.YieldBindingIdentifier, { at: startLoc }); return; } } else if (word === "await") { if (this.prodParam.hasAwait) { this.raise(ErrorMessages.AwaitBindingIdentifier, { at: startLoc }); return; } if (this.scope.inStaticBlock) { this.raise(ErrorMessages.AwaitBindingIdentifierInStaticBlock, { at: startLoc }); return; } this.expressionScope.recordAsyncArrowParametersError(ErrorMessages.AwaitBindingIdentifier, startLoc); } else if (word === "arguments") { if (this.scope.inClassAndNotInNonArrowFunction) { this.raise(ErrorMessages.ArgumentsInClass, { at: startLoc }); return; } } if (checkKeywords && isKeyword(word)) { this.raise(ErrorMessages.UnexpectedKeyword, { at: startLoc }, word); return; } const reservedTest = !this.state.strict ? isReservedWord : isBinding ? isStrictBindReservedWord : isStrictReservedWord; if (reservedTest(word, this.inModule)) { this.raise(ErrorMessages.UnexpectedReservedWord, { at: startLoc }, word); } } isAwaitAllowed() { if (this.prodParam.hasAwait) return true; if (this.options.allowAwaitOutsideFunction && !this.scope.inFunction) { return true; } return false; } parseAwait(startPos, startLoc) { const node = this.startNodeAt(startPos, startLoc); this.expressionScope.recordParameterInitializerError(node.loc.start, ErrorMessages.AwaitExpressionFormalParameter); if (this.eat(55)) { this.raise(ErrorMessages.ObsoleteAwaitStar, { node }); } if (!this.scope.inFunction && !this.options.allowAwaitOutsideFunction) { if (this.isAmbiguousAwait()) { this.ambiguousScriptDifferentAst = true; } else { this.sawUnambiguousESM = true; } } if (!this.state.soloAwait) { node.argument = this.parseMaybeUnary(null, true); } return this.finishNode(node, "AwaitExpression"); } isAmbiguousAwait() { if (this.hasPrecedingLineBreak()) return true; const { type } = this.state; return type === 53 || type === 10 || type === 0 || tokenIsTemplate(type) || type === 133 || type === 56 || this.hasPlugin("v8intrinsic") && type === 54; } parseYield() { const node = this.startNode(); this.expressionScope.recordParameterInitializerError(node.loc.start, ErrorMessages.YieldInParameter); this.next(); let delegating = false; let argument = null; if (!this.hasPrecedingLineBreak()) { delegating = this.eat(55); switch (this.state.type) { case 13: case 135: case 8: case 11: case 3: case 9: case 14: case 12: if (!delegating) break; default: argument = this.parseMaybeAssign(); } } node.delegate = delegating; node.argument = argument; return this.finishNode(node, "YieldExpression"); } checkPipelineAtInfixOperator(left, leftStartLoc) { if (this.hasPlugin(["pipelineOperator", { proposal: "smart" }])) { if (left.type === "SequenceExpression") { this.raise(ErrorMessages.PipelineHeadSequenceExpression, { at: leftStartLoc }); } } } parseSmartPipelineBodyInStyle(childExpr, startPos, startLoc) { const bodyNode = this.startNodeAt(startPos, startLoc); if (this.isSimpleReference(childExpr)) { bodyNode.callee = childExpr; return this.finishNode(bodyNode, "PipelineBareFunction"); } else { this.checkSmartPipeTopicBodyEarlyErrors(startLoc); bodyNode.expression = childExpr; return this.finishNode(bodyNode, "PipelineTopicExpression"); } } isSimpleReference(expression) { switch (expression.type) { case "MemberExpression": return !expression.computed && this.isSimpleReference(expression.object); case "Identifier": return true; default: return false; } } checkSmartPipeTopicBodyEarlyErrors(startLoc) { if (this.match(19)) { throw this.raise(ErrorMessages.PipelineBodyNoArrow, { at: this.state.startLoc }); } if (!this.topicReferenceWasUsedInCurrentContext()) { this.raise(ErrorMessages.PipelineTopicUnused, { at: startLoc }); } } withTopicBindingContext(callback) { const outerContextTopicState = this.state.topicContext; this.state.topicContext = { maxNumOfResolvableTopics: 1, maxTopicIndex: null }; try { return callback(); } finally { this.state.topicContext = outerContextTopicState; } } withSmartMixTopicForbiddingContext(callback) { if (this.hasPlugin(["pipelineOperator", { proposal: "smart" }])) { const outerContextTopicState = this.state.topicContext; this.state.topicContext = { maxNumOfResolvableTopics: 0, maxTopicIndex: null }; try { return callback(); } finally { this.state.topicContext = outerContextTopicState; } } else { return callback(); } } withSoloAwaitPermittingContext(callback) { const outerContextSoloAwaitState = this.state.soloAwait; this.state.soloAwait = true; try { return callback(); } finally { this.state.soloAwait = outerContextSoloAwaitState; } } allowInAnd(callback) { const flags = this.prodParam.currentFlags(); const prodParamToSet = PARAM_IN & ~flags; if (prodParamToSet) { this.prodParam.enter(flags | PARAM_IN); try { return callback(); } finally { this.prodParam.exit(); } } return callback(); } disallowInAnd(callback) { const flags = this.prodParam.currentFlags(); const prodParamToClear = PARAM_IN & flags; if (prodParamToClear) { this.prodParam.enter(flags & ~PARAM_IN); try { return callback(); } finally { this.prodParam.exit(); } } return callback(); } registerTopicReference() { this.state.topicContext.maxTopicIndex = 0; } topicReferenceIsAllowedInCurrentContext() { return this.state.topicContext.maxNumOfResolvableTopics >= 1; } topicReferenceWasUsedInCurrentContext() { return this.state.topicContext.maxTopicIndex != null && this.state.topicContext.maxTopicIndex >= 0; } parseFSharpPipelineBody(prec) { const startPos = this.state.start; const startLoc = this.state.startLoc; this.state.potentialArrowAt = this.state.start; const oldInFSharpPipelineDirectBody = this.state.inFSharpPipelineDirectBody; this.state.inFSharpPipelineDirectBody = true; const ret = this.parseExprOp(this.parseMaybeUnaryOrPrivate(), startPos, startLoc, prec); this.state.inFSharpPipelineDirectBody = oldInFSharpPipelineDirectBody; return ret; } parseModuleExpression() { this.expectPlugin("moduleBlocks"); const node = this.startNode(); this.next(); this.eat(5); const revertScopes = this.initializeScopes(true); this.enterInitialScopes(); const program = this.startNode(); try { node.body = this.parseProgram(program, 8, "module"); } finally { revertScopes(); } this.eat(8); return this.finishNode(node, "ModuleExpression"); } parsePropertyNamePrefixOperator(prop) {} } const loopLabel = { kind: "loop" }, switchLabel = { kind: "switch" }; const FUNC_NO_FLAGS = 0b000, FUNC_STATEMENT = 0b001, FUNC_HANGING_STATEMENT = 0b010, FUNC_NULLABLE_ID = 0b100; const loneSurrogate = /[\uD800-\uDFFF]/u; const keywordRelationalOperator = /in(?:stanceof)?/y; function babel7CompatTokens(tokens, input) { for (let i = 0; i < tokens.length; i++) { const token = tokens[i]; const { type } = token; if (typeof type === "number") { { if (type === 134) { const { loc, start, value, end } = token; const hashEndPos = start + 1; const hashEndLoc = createPositionWithColumnOffset(loc.start, 1); tokens.splice(i, 1, new Token({ type: getExportedToken(27), value: "#", start: start, end: hashEndPos, startLoc: loc.start, endLoc: hashEndLoc }), new Token({ type: getExportedToken(128), value: value, start: hashEndPos, end: end, startLoc: hashEndLoc, endLoc: loc.end })); i++; continue; } if (tokenIsTemplate(type)) { const { loc, start, value, end } = token; const backquoteEnd = start + 1; const backquoteEndLoc = createPositionWithColumnOffset(loc.start, 1); let startToken; if (input.charCodeAt(start) === 96) { startToken = new Token({ type: getExportedToken(22), value: "`", start: start, end: backquoteEnd, startLoc: loc.start, endLoc: backquoteEndLoc }); } else { startToken = new Token({ type: getExportedToken(8), value: "}", start: start, end: backquoteEnd, startLoc: loc.start, endLoc: backquoteEndLoc }); } let templateValue, templateElementEnd, templateElementEndLoc, endToken; if (type === 24) { templateElementEnd = end - 1; templateElementEndLoc = createPositionWithColumnOffset(loc.end, -1); templateValue = value === null ? null : value.slice(1, -1); endToken = new Token({ type: getExportedToken(22), value: "`", start: templateElementEnd, end: end, startLoc: templateElementEndLoc, endLoc: loc.end }); } else { templateElementEnd = end - 2; templateElementEndLoc = createPositionWithColumnOffset(loc.end, -2); templateValue = value === null ? null : value.slice(1, -2); endToken = new Token({ type: getExportedToken(23), value: "${", start: templateElementEnd, end: end, startLoc: templateElementEndLoc, endLoc: loc.end }); } tokens.splice(i, 1, startToken, new Token({ type: getExportedToken(20), value: templateValue, start: backquoteEnd, end: templateElementEnd, startLoc: backquoteEndLoc, endLoc: templateElementEndLoc }), endToken); i += 2; continue; } } token.type = getExportedToken(type); } } return tokens; } class StatementParser extends ExpressionParser { parseTopLevel(file, program) { file.program = this.parseProgram(program); file.comments = this.state.comments; if (this.options.tokens) { file.tokens = babel7CompatTokens(this.tokens, this.input); } return this.finishNode(file, "File"); } parseProgram(program, end = 135, sourceType = this.options.sourceType) { program.sourceType = sourceType; program.interpreter = this.parseInterpreterDirective(); this.parseBlockBody(program, true, true, end); if (this.inModule && !this.options.allowUndeclaredExports && this.scope.undefinedExports.size > 0) { for (const [name, loc] of Array.from(this.scope.undefinedExports)) { this.raise(ErrorMessages.ModuleExportUndefined, { at: loc }, name); } } return this.finishNode(program, "Program"); } stmtToDirective(stmt) { const directive = stmt; directive.type = "Directive"; directive.value = directive.expression; delete directive.expression; const directiveLiteral = directive.value; const expressionValue = directiveLiteral.value; const raw = this.input.slice(directiveLiteral.start, directiveLiteral.end); const val = directiveLiteral.value = raw.slice(1, -1); this.addExtra(directiveLiteral, "raw", raw); this.addExtra(directiveLiteral, "rawValue", val); this.addExtra(directiveLiteral, "expressionValue", expressionValue); directiveLiteral.type = "DirectiveLiteral"; return directive; } parseInterpreterDirective() { if (!this.match(28)) { return null; } const node = this.startNode(); node.value = this.state.value; this.next(); return this.finishNode(node, "InterpreterDirective"); } isLet(context) { if (!this.isContextual(99)) { return false; } return this.isLetKeyword(context); } isLetKeyword(context) { const next = this.nextTokenStart(); const nextCh = this.codePointAtPos(next); if (nextCh === 92 || nextCh === 91) { return true; } if (context) return false; if (nextCh === 123) return true; if (isIdentifierStart(nextCh)) { keywordRelationalOperator.lastIndex = next; if (keywordRelationalOperator.test(this.input)) { const endCh = this.codePointAtPos(keywordRelationalOperator.lastIndex); if (!isIdentifierChar(endCh) && endCh !== 92) { return false; } } return true; } return false; } parseStatement(context, topLevel) { if (this.match(26)) { this.parseDecorators(true); } return this.parseStatementContent(context, topLevel); } parseStatementContent(context, topLevel) { let starttype = this.state.type; const node = this.startNode(); let kind; if (this.isLet(context)) { starttype = 74; kind = "let"; } switch (starttype) { case 60: return this.parseBreakContinueStatement(node, true); case 63: return this.parseBreakContinueStatement(node, false); case 64: return this.parseDebuggerStatement(node); case 90: return this.parseDoStatement(node); case 91: return this.parseForStatement(node); case 68: if (this.lookaheadCharCode() === 46) break; if (context) { if (this.state.strict) { this.raise(ErrorMessages.StrictFunction, { at: this.state.startLoc }); } else if (context !== "if" && context !== "label") { this.raise(ErrorMessages.SloppyFunction, { at: this.state.startLoc }); } } return this.parseFunctionStatement(node, false, !context); case 80: if (context) this.unexpected(); return this.parseClass(node, true); case 69: return this.parseIfStatement(node); case 70: return this.parseReturnStatement(node); case 71: return this.parseSwitchStatement(node); case 72: return this.parseThrowStatement(node); case 73: return this.parseTryStatement(node); case 75: case 74: kind = kind || this.state.value; if (context && kind !== "var") { this.raise(ErrorMessages.UnexpectedLexicalDeclaration, { at: this.state.startLoc }); } return this.parseVarStatement(node, kind); case 92: return this.parseWhileStatement(node); case 76: return this.parseWithStatement(node); case 5: return this.parseBlock(); case 13: return this.parseEmptyStatement(node); case 83: { const nextTokenCharCode = this.lookaheadCharCode(); if (nextTokenCharCode === 40 || nextTokenCharCode === 46) { break; } } case 82: { if (!this.options.allowImportExportEverywhere && !topLevel) { this.raise(ErrorMessages.UnexpectedImportExport, { at: this.state.startLoc }); } this.next(); let result; if (starttype === 83) { result = this.parseImport(node); if (result.type === "ImportDeclaration" && (!result.importKind || result.importKind === "value")) { this.sawUnambiguousESM = true; } } else { result = this.parseExport(node); if (result.type === "ExportNamedDeclaration" && (!result.exportKind || result.exportKind === "value") || result.type === "ExportAllDeclaration" && (!result.exportKind || result.exportKind === "value") || result.type === "ExportDefaultDeclaration") { this.sawUnambiguousESM = true; } } this.assertModuleNodeAllowed(node); return result; } default: { if (this.isAsyncFunction()) { if (context) { this.raise(ErrorMessages.AsyncFunctionInSingleStatementContext, { at: this.state.startLoc }); } this.next(); return this.parseFunctionStatement(node, true, !context); } } } const maybeName = this.state.value; const expr = this.parseExpression(); if (tokenIsIdentifier(starttype) && expr.type === "Identifier" && this.eat(14)) { return this.parseLabeledStatement(node, maybeName, expr, context); } else { return this.parseExpressionStatement(node, expr); } } assertModuleNodeAllowed(node) { if (!this.options.allowImportExportEverywhere && !this.inModule) { this.raise(SourceTypeModuleErrorMessages.ImportOutsideModule, { node }); } } takeDecorators(node) { const decorators = this.state.decoratorStack[this.state.decoratorStack.length - 1]; if (decorators.length) { node.decorators = decorators; this.resetStartLocationFromNode(node, decorators[0]); this.state.decoratorStack[this.state.decoratorStack.length - 1] = []; } } canHaveLeadingDecorator() { return this.match(80); } parseDecorators(allowExport) { const currentContextDecorators = this.state.decoratorStack[this.state.decoratorStack.length - 1]; while (this.match(26)) { const decorator = this.parseDecorator(); currentContextDecorators.push(decorator); } if (this.match(82)) { if (!allowExport) { this.unexpected(); } if (this.hasPlugin("decorators") && !this.getPluginOption("decorators", "decoratorsBeforeExport")) { this.raise(ErrorMessages.DecoratorExportClass, { at: this.state.startLoc }); } } else if (!this.canHaveLeadingDecorator()) { throw this.raise(ErrorMessages.UnexpectedLeadingDecorator, { at: this.state.startLoc }); } } parseDecorator() { this.expectOnePlugin(["decorators-legacy", "decorators"]); const node = this.startNode(); this.next(); if (this.hasPlugin("decorators")) { this.state.decoratorStack.push([]); const startPos = this.state.start; const startLoc = this.state.startLoc; let expr; if (this.eat(10)) { expr = this.parseExpression(); this.expect(11); } else { expr = this.parseIdentifier(false); while (this.eat(16)) { const node = this.startNodeAt(startPos, startLoc); node.object = expr; node.property = this.parseIdentifier(true); node.computed = false; expr = this.finishNode(node, "MemberExpression"); } } node.expression = this.parseMaybeDecoratorArguments(expr); this.state.decoratorStack.pop(); } else { node.expression = this.parseExprSubscripts(); } return this.finishNode(node, "Decorator"); } parseMaybeDecoratorArguments(expr) { if (this.eat(10)) { const node = this.startNodeAtNode(expr); node.callee = expr; node.arguments = this.parseCallExpressionArguments(11, false); this.toReferencedList(node.arguments); return this.finishNode(node, "CallExpression"); } return expr; } parseBreakContinueStatement(node, isBreak) { this.next(); if (this.isLineTerminator()) { node.label = null; } else { node.label = this.parseIdentifier(); this.semicolon(); } this.verifyBreakContinue(node, isBreak); return this.finishNode(node, isBreak ? "BreakStatement" : "ContinueStatement"); } verifyBreakContinue(node, isBreak) { let i; for (i = 0; i < this.state.labels.length; ++i) { const lab = this.state.labels[i]; if (node.label == null || lab.name === node.label.name) { if (lab.kind != null && (isBreak || lab.kind === "loop")) break; if (node.label && isBreak) break; } } if (i === this.state.labels.length) { this.raise(ErrorMessages.IllegalBreakContinue, { node }, isBreak ? "break" : "continue"); } } parseDebuggerStatement(node) { this.next(); this.semicolon(); return this.finishNode(node, "DebuggerStatement"); } parseHeaderExpression() { this.expect(10); const val = this.parseExpression(); this.expect(11); return val; } parseDoStatement(node) { this.next(); this.state.labels.push(loopLabel); node.body = this.withSmartMixTopicForbiddingContext(() => this.parseStatement("do")); this.state.labels.pop(); this.expect(92); node.test = this.parseHeaderExpression(); this.eat(13); return this.finishNode(node, "DoWhileStatement"); } parseForStatement(node) { this.next(); this.state.labels.push(loopLabel); let awaitAt = null; if (this.isAwaitAllowed() && this.eatContextual(96)) { awaitAt = this.state.lastTokStartLoc; } this.scope.enter(SCOPE_OTHER); this.expect(10); if (this.match(13)) { if (awaitAt !== null) { this.unexpected(awaitAt); } return this.parseFor(node, null); } const startsWithLet = this.isContextual(99); const isLet = startsWithLet && this.isLetKeyword(); if (this.match(74) || this.match(75) || isLet) { const init = this.startNode(); const kind = isLet ? "let" : this.state.value; this.next(); this.parseVar(init, true, kind); this.finishNode(init, "VariableDeclaration"); if ((this.match(58) || this.isContextual(101)) && init.declarations.length === 1) { return this.parseForIn(node, init, awaitAt); } if (awaitAt !== null) { this.unexpected(awaitAt); } return this.parseFor(node, init); } const startsWithAsync = this.isContextual(95); const refExpressionErrors = new ExpressionErrors(); const init = this.parseExpression(true, refExpressionErrors); const isForOf = this.isContextual(101); if (isForOf) { if (startsWithLet) { this.raise(ErrorMessages.ForOfLet, { node: init }); } if (awaitAt === null && startsWithAsync && init.type === "Identifier") { this.raise(ErrorMessages.ForOfAsync, { node: init }); } } if (isForOf || this.match(58)) { this.checkDestructuringPrivate(refExpressionErrors); this.toAssignable(init, true); const description = isForOf ? "for-of statement" : "for-in statement"; this.checkLVal(init, description); return this.parseForIn(node, init, awaitAt); } else { this.checkExpressionErrors(refExpressionErrors, true); } if (awaitAt !== null) { this.unexpected(awaitAt); } return this.parseFor(node, init); } parseFunctionStatement(node, isAsync, declarationPosition) { this.next(); return this.parseFunction(node, FUNC_STATEMENT | (declarationPosition ? 0 : FUNC_HANGING_STATEMENT), isAsync); } parseIfStatement(node) { this.next(); node.test = this.parseHeaderExpression(); node.consequent = this.parseStatement("if"); node.alternate = this.eat(66) ? this.parseStatement("if") : null; return this.finishNode(node, "IfStatement"); } parseReturnStatement(node) { if (!this.prodParam.hasReturn && !this.options.allowReturnOutsideFunction) { this.raise(ErrorMessages.IllegalReturn, { at: this.state.startLoc }); } this.next(); if (this.isLineTerminator()) { node.argument = null; } else { node.argument = this.parseExpression(); this.semicolon(); } return this.finishNode(node, "ReturnStatement"); } parseSwitchStatement(node) { this.next(); node.discriminant = this.parseHeaderExpression(); const cases = node.cases = []; this.expect(5); this.state.labels.push(switchLabel); this.scope.enter(SCOPE_OTHER); let cur; for (let sawDefault; !this.match(8);) { if (this.match(61) || this.match(65)) { const isCase = this.match(61); if (cur) this.finishNode(cur, "SwitchCase"); cases.push(cur = this.startNode()); cur.consequent = []; this.next(); if (isCase) { cur.test = this.parseExpression(); } else { if (sawDefault) { this.raise(ErrorMessages.MultipleDefaultsInSwitch, { at: this.state.lastTokStartLoc }); } sawDefault = true; cur.test = null; } this.expect(14); } else { if (cur) { cur.consequent.push(this.parseStatement(null)); } else { this.unexpected(); } } } this.scope.exit(); if (cur) this.finishNode(cur, "SwitchCase"); this.next(); this.state.labels.pop(); return this.finishNode(node, "SwitchStatement"); } parseThrowStatement(node) { this.next(); if (this.hasPrecedingLineBreak()) { this.raise(ErrorMessages.NewlineAfterThrow, { at: this.state.lastTokEndLoc }); } node.argument = this.parseExpression(); this.semicolon(); return this.finishNode(node, "ThrowStatement"); } parseCatchClauseParam() { const param = this.parseBindingAtom(); const simple = param.type === "Identifier"; this.scope.enter(simple ? SCOPE_SIMPLE_CATCH : 0); this.checkLVal(param, "catch clause", BIND_LEXICAL); return param; } parseTryStatement(node) { this.next(); node.block = this.parseBlock(); node.handler = null; if (this.match(62)) { const clause = this.startNode(); this.next(); if (this.match(10)) { this.expect(10); clause.param = this.parseCatchClauseParam(); this.expect(11); } else { clause.param = null; this.scope.enter(SCOPE_OTHER); } clause.body = this.withSmartMixTopicForbiddingContext(() => this.parseBlock(false, false)); this.scope.exit(); node.handler = this.finishNode(clause, "CatchClause"); } node.finalizer = this.eat(67) ? this.parseBlock() : null; if (!node.handler && !node.finalizer) { this.raise(ErrorMessages.NoCatchOrFinally, { node }); } return this.finishNode(node, "TryStatement"); } parseVarStatement(node, kind) { this.next(); this.parseVar(node, false, kind); this.semicolon(); return this.finishNode(node, "VariableDeclaration"); } parseWhileStatement(node) { this.next(); node.test = this.parseHeaderExpression(); this.state.labels.push(loopLabel); node.body = this.withSmartMixTopicForbiddingContext(() => this.parseStatement("while")); this.state.labels.pop(); return this.finishNode(node, "WhileStatement"); } parseWithStatement(node) { if (this.state.strict) { this.raise(ErrorMessages.StrictWith, { at: this.state.startLoc }); } this.next(); node.object = this.parseHeaderExpression(); node.body = this.withSmartMixTopicForbiddingContext(() => this.parseStatement("with")); return this.finishNode(node, "WithStatement"); } parseEmptyStatement(node) { this.next(); return this.finishNode(node, "EmptyStatement"); } parseLabeledStatement(node, maybeName, expr, context) { for (const label of this.state.labels) { if (label.name === maybeName) { this.raise(ErrorMessages.LabelRedeclaration, { node: expr }, maybeName); } } const kind = tokenIsLoop(this.state.type) ? "loop" : this.match(71) ? "switch" : null; for (let i = this.state.labels.length - 1; i >= 0; i--) { const label = this.state.labels[i]; if (label.statementStart === node.start) { label.statementStart = this.state.start; label.kind = kind; } else { break; } } this.state.labels.push({ name: maybeName, kind: kind, statementStart: this.state.start }); node.body = this.parseStatement(context ? context.indexOf("label") === -1 ? context + "label" : context : "label"); this.state.labels.pop(); node.label = expr; return this.finishNode(node, "LabeledStatement"); } parseExpressionStatement(node, expr) { node.expression = expr; this.semicolon(); return this.finishNode(node, "ExpressionStatement"); } parseBlock(allowDirectives = false, createNewLexicalScope = true, afterBlockParse) { const node = this.startNode(); if (allowDirectives) { this.state.strictErrors.clear(); } this.expect(5); if (createNewLexicalScope) { this.scope.enter(SCOPE_OTHER); } this.parseBlockBody(node, allowDirectives, false, 8, afterBlockParse); if (createNewLexicalScope) { this.scope.exit(); } return this.finishNode(node, "BlockStatement"); } isValidDirective(stmt) { return stmt.type === "ExpressionStatement" && stmt.expression.type === "StringLiteral" && !stmt.expression.extra.parenthesized; } parseBlockBody(node, allowDirectives, topLevel, end, afterBlockParse) { const body = node.body = []; const directives = node.directives = []; this.parseBlockOrModuleBlockBody(body, allowDirectives ? directives : undefined, topLevel, end, afterBlockParse); } parseBlockOrModuleBlockBody(body, directives, topLevel, end, afterBlockParse) { const oldStrict = this.state.strict; let hasStrictModeDirective = false; let parsedNonDirective = false; while (!this.match(end)) { const stmt = this.parseStatement(null, topLevel); if (directives && !parsedNonDirective) { if (this.isValidDirective(stmt)) { const directive = this.stmtToDirective(stmt); directives.push(directive); if (!hasStrictModeDirective && directive.value.value === "use strict") { hasStrictModeDirective = true; this.setStrict(true); } continue; } parsedNonDirective = true; this.state.strictErrors.clear(); } body.push(stmt); } if (afterBlockParse) { afterBlockParse.call(this, hasStrictModeDirective); } if (!oldStrict) { this.setStrict(false); } this.next(); } parseFor(node, init) { node.init = init; this.semicolon(false); node.test = this.match(13) ? null : this.parseExpression(); this.semicolon(false); node.update = this.match(11) ? null : this.parseExpression(); this.expect(11); node.body = this.withSmartMixTopicForbiddingContext(() => this.parseStatement("for")); this.scope.exit(); this.state.labels.pop(); return this.finishNode(node, "ForStatement"); } parseForIn(node, init, awaitAt) { const isForIn = this.match(58); this.next(); if (isForIn) { if (awaitAt !== null) this.unexpected(awaitAt); } else { node.await = awaitAt !== null; } if (init.type === "VariableDeclaration" && init.declarations[0].init != null && (!isForIn || this.state.strict || init.kind !== "var" || init.declarations[0].id.type !== "Identifier")) { this.raise(ErrorMessages.ForInOfLoopInitializer, { node: init }, isForIn ? "for-in" : "for-of"); } if (init.type === "AssignmentPattern") { this.raise(ErrorMessages.InvalidLhs, { node: init }, "for-loop"); } node.left = init; node.right = isForIn ? this.parseExpression() : this.parseMaybeAssignAllowIn(); this.expect(11); node.body = this.withSmartMixTopicForbiddingContext(() => this.parseStatement("for")); this.scope.exit(); this.state.labels.pop(); return this.finishNode(node, isForIn ? "ForInStatement" : "ForOfStatement"); } parseVar(node, isFor, kind) { const declarations = node.declarations = []; const isTypescript = this.hasPlugin("typescript"); node.kind = kind; for (;;) { const decl = this.startNode(); this.parseVarId(decl, kind); if (this.eat(29)) { decl.init = isFor ? this.parseMaybeAssignDisallowIn() : this.parseMaybeAssignAllowIn(); } else { if (kind === "const" && !(this.match(58) || this.isContextual(101))) { if (!isTypescript) { this.raise(ErrorMessages.DeclarationMissingInitializer, { at: this.state.lastTokEndLoc }, "Const declarations"); } } else if (decl.id.type !== "Identifier" && !(isFor && (this.match(58) || this.isContextual(101)))) { this.raise(ErrorMessages.DeclarationMissingInitializer, { at: this.state.lastTokEndLoc }, "Complex binding patterns"); } decl.init = null; } declarations.push(this.finishNode(decl, "VariableDeclarator")); if (!this.eat(12)) break; } return node; } parseVarId(decl, kind) { decl.id = this.parseBindingAtom(); this.checkLVal(decl.id, "variable declaration", kind === "var" ? BIND_VAR : BIND_LEXICAL, undefined, kind !== "var"); } parseFunction(node, statement = FUNC_NO_FLAGS, isAsync = false) { const isStatement = statement & FUNC_STATEMENT; const isHangingStatement = statement & FUNC_HANGING_STATEMENT; const requireId = !!isStatement && !(statement & FUNC_NULLABLE_ID); this.initFunction(node, isAsync); if (this.match(55) && isHangingStatement) { this.raise(ErrorMessages.GeneratorInSingleStatementContext, { at: this.state.startLoc }); } node.generator = this.eat(55); if (isStatement) { node.id = this.parseFunctionId(requireId); } const oldMaybeInArrowParameters = this.state.maybeInArrowParameters; this.state.maybeInArrowParameters = false; this.scope.enter(SCOPE_FUNCTION); this.prodParam.enter(functionFlags(isAsync, node.generator)); if (!isStatement) { node.id = this.parseFunctionId(); } this.parseFunctionParams(node, false); this.withSmartMixTopicForbiddingContext(() => { this.parseFunctionBodyAndFinish(node, isStatement ? "FunctionDeclaration" : "FunctionExpression"); }); this.prodParam.exit(); this.scope.exit(); if (isStatement && !isHangingStatement) { this.registerFunctionStatementId(node); } this.state.maybeInArrowParameters = oldMaybeInArrowParameters; return node; } parseFunctionId(requireId) { return requireId || tokenIsIdentifier(this.state.type) ? this.parseIdentifier() : null; } parseFunctionParams(node, allowModifiers) { this.expect(10); this.expressionScope.enter(newParameterDeclarationScope()); node.params = this.parseBindingList(11, 41, false, allowModifiers); this.expressionScope.exit(); } registerFunctionStatementId(node) { if (!node.id) return; this.scope.declareName(node.id.name, this.state.strict || node.generator || node.async ? this.scope.treatFunctionsAsVar ? BIND_VAR : BIND_LEXICAL : BIND_FUNCTION, node.id.loc.start); } parseClass(node, isStatement, optionalId) { this.next(); this.takeDecorators(node); const oldStrict = this.state.strict; this.state.strict = true; this.parseClassId(node, isStatement, optionalId); this.parseClassSuper(node); node.body = this.parseClassBody(!!node.superClass, oldStrict); return this.finishNode(node, isStatement ? "ClassDeclaration" : "ClassExpression"); } isClassProperty() { return this.match(29) || this.match(13) || this.match(8); } isClassMethod() { return this.match(10); } isNonstaticConstructor(method) { return !method.computed && !method.static && (method.key.name === "constructor" || method.key.value === "constructor"); } parseClassBody(hadSuperClass, oldStrict) { this.classScope.enter(); const state = { hadConstructor: false, hadSuperClass }; let decorators = []; const classBody = this.startNode(); classBody.body = []; this.expect(5); this.withSmartMixTopicForbiddingContext(() => { while (!this.match(8)) { if (this.eat(13)) { if (decorators.length > 0) { throw this.raise(ErrorMessages.DecoratorSemicolon, { at: this.state.lastTokEndLoc }); } continue; } if (this.match(26)) { decorators.push(this.parseDecorator()); continue; } const member = this.startNode(); if (decorators.length) { member.decorators = decorators; this.resetStartLocationFromNode(member, decorators[0]); decorators = []; } this.parseClassMember(classBody, member, state); if (member.kind === "constructor" && member.decorators && member.decorators.length > 0) { this.raise(ErrorMessages.DecoratorConstructor, { node: member }); } } }); this.state.strict = oldStrict; this.next(); if (decorators.length) { throw this.raise(ErrorMessages.TrailingDecorator, { at: this.state.startLoc }); } this.classScope.exit(); return this.finishNode(classBody, "ClassBody"); } parseClassMemberFromModifier(classBody, member) { const key = this.parseIdentifier(true); if (this.isClassMethod()) { const method = member; method.kind = "method"; method.computed = false; method.key = key; method.static = false; this.pushClassMethod(classBody, method, false, false, false, false); return true; } else if (this.isClassProperty()) { const prop = member; prop.computed = false; prop.key = key; prop.static = false; classBody.body.push(this.parseClassProperty(prop)); return true; } this.resetPreviousNodeTrailingComments(key); return false; } parseClassMember(classBody, member, state) { const isStatic = this.isContextual(104); if (isStatic) { if (this.parseClassMemberFromModifier(classBody, member)) { return; } if (this.eat(5)) { this.parseClassStaticBlock(classBody, member); return; } } this.parseClassMemberWithIsStatic(classBody, member, state, isStatic); } parseClassMemberWithIsStatic(classBody, member, state, isStatic) { const publicMethod = member; const privateMethod = member; const publicProp = member; const privateProp = member; const accessorProp = member; const method = publicMethod; const publicMember = publicMethod; member.static = isStatic; this.parsePropertyNamePrefixOperator(member); if (this.eat(55)) { method.kind = "method"; const isPrivateName = this.match(134); this.parseClassElementName(method); if (isPrivateName) { this.pushClassPrivateMethod(classBody, privateMethod, true, false); return; } if (this.isNonstaticConstructor(publicMethod)) { this.raise(ErrorMessages.ConstructorIsGenerator, { node: publicMethod.key }); } this.pushClassMethod(classBody, publicMethod, true, false, false, false); return; } const isContextual = tokenIsIdentifier(this.state.type) && !this.state.containsEsc; const isPrivate = this.match(134); const key = this.parseClassElementName(member); const maybeQuestionTokenStartLoc = this.state.startLoc; this.parsePostMemberNameModifiers(publicMember); if (this.isClassMethod()) { method.kind = "method"; if (isPrivate) { this.pushClassPrivateMethod(classBody, privateMethod, false, false); return; } const isConstructor = this.isNonstaticConstructor(publicMethod); let allowsDirectSuper = false; if (isConstructor) { publicMethod.kind = "constructor"; if (state.hadConstructor && !this.hasPlugin("typescript")) { this.raise(ErrorMessages.DuplicateConstructor, { node: key }); } if (isConstructor && this.hasPlugin("typescript") && member.override) { this.raise(ErrorMessages.OverrideOnConstructor, { node: key }); } state.hadConstructor = true; allowsDirectSuper = state.hadSuperClass; } this.pushClassMethod(classBody, publicMethod, false, false, isConstructor, allowsDirectSuper); } else if (this.isClassProperty()) { if (isPrivate) { this.pushClassPrivateProperty(classBody, privateProp); } else { this.pushClassProperty(classBody, publicProp); } } else if (isContextual && key.name === "async" && !this.isLineTerminator()) { this.resetPreviousNodeTrailingComments(key); const isGenerator = this.eat(55); if (publicMember.optional) { this.unexpected(maybeQuestionTokenStartLoc); } method.kind = "method"; const isPrivate = this.match(134); this.parseClassElementName(method); this.parsePostMemberNameModifiers(publicMember); if (isPrivate) { this.pushClassPrivateMethod(classBody, privateMethod, isGenerator, true); } else { if (this.isNonstaticConstructor(publicMethod)) { this.raise(ErrorMessages.ConstructorIsAsync, { node: publicMethod.key }); } this.pushClassMethod(classBody, publicMethod, isGenerator, true, false, false); } } else if (isContextual && (key.name === "get" || key.name === "set") && !(this.match(55) && this.isLineTerminator())) { this.resetPreviousNodeTrailingComments(key); method.kind = key.name; const isPrivate = this.match(134); this.parseClassElementName(publicMethod); if (isPrivate) { this.pushClassPrivateMethod(classBody, privateMethod, false, false); } else { if (this.isNonstaticConstructor(publicMethod)) { this.raise(ErrorMessages.ConstructorIsAccessor, { node: publicMethod.key }); } this.pushClassMethod(classBody, publicMethod, false, false, false, false); } this.checkGetterSetterParams(publicMethod); } else if (isContextual && key.name === "accessor" && !this.isLineTerminator()) { this.expectPlugin("decoratorAutoAccessors"); this.resetPreviousNodeTrailingComments(key); const isPrivate = this.match(134); this.parseClassElementName(publicProp); this.pushClassAccessorProperty(classBody, accessorProp, isPrivate); } else if (this.isLineTerminator()) { if (isPrivate) { this.pushClassPrivateProperty(classBody, privateProp); } else { this.pushClassProperty(classBody, publicProp); } } else { this.unexpected(); } } parseClassElementName(member) { const { type, value } = this.state; if ((type === 128 || type === 129) && member.static && value === "prototype") { this.raise(ErrorMessages.StaticPrototype, { at: this.state.startLoc }); } if (type === 134) { if (value === "constructor") { this.raise(ErrorMessages.ConstructorClassPrivateField, { at: this.state.startLoc }); } const key = this.parsePrivateName(); member.key = key; return key; } return this.parsePropertyName(member); } parseClassStaticBlock(classBody, member) { var _member$decorators; this.scope.enter(SCOPE_CLASS | SCOPE_STATIC_BLOCK | SCOPE_SUPER); const oldLabels = this.state.labels; this.state.labels = []; this.prodParam.enter(PARAM); const body = member.body = []; this.parseBlockOrModuleBlockBody(body, undefined, false, 8); this.prodParam.exit(); this.scope.exit(); this.state.labels = oldLabels; classBody.body.push(this.finishNode(member, "StaticBlock")); if ((_member$decorators = member.decorators) != null && _member$decorators.length) { this.raise(ErrorMessages.DecoratorStaticBlock, { node: member }); } } pushClassProperty(classBody, prop) { if (!prop.computed && (prop.key.name === "constructor" || prop.key.value === "constructor")) { this.raise(ErrorMessages.ConstructorClassField, { node: prop.key }); } classBody.body.push(this.parseClassProperty(prop)); } pushClassPrivateProperty(classBody, prop) { const node = this.parseClassPrivateProperty(prop); classBody.body.push(node); this.classScope.declarePrivateName(this.getPrivateNameSV(node.key), CLASS_ELEMENT_OTHER, node.key.loc.start); } pushClassAccessorProperty(classBody, prop, isPrivate) { if (!isPrivate && !prop.computed) { const key = prop.key; if (key.name === "constructor" || key.value === "constructor") { this.raise(ErrorMessages.ConstructorClassField, { node: key }); } } const node = this.parseClassAccessorProperty(prop); classBody.body.push(node); if (isPrivate) { this.classScope.declarePrivateName(this.getPrivateNameSV(node.key), CLASS_ELEMENT_OTHER, node.key.loc.start); } } pushClassMethod(classBody, method, isGenerator, isAsync, isConstructor, allowsDirectSuper) { classBody.body.push(this.parseMethod(method, isGenerator, isAsync, isConstructor, allowsDirectSuper, "ClassMethod", true)); } pushClassPrivateMethod(classBody, method, isGenerator, isAsync) { const node = this.parseMethod(method, isGenerator, isAsync, false, false, "ClassPrivateMethod", true); classBody.body.push(node); const kind = node.kind === "get" ? node.static ? CLASS_ELEMENT_STATIC_GETTER : CLASS_ELEMENT_INSTANCE_GETTER : node.kind === "set" ? node.static ? CLASS_ELEMENT_STATIC_SETTER : CLASS_ELEMENT_INSTANCE_SETTER : CLASS_ELEMENT_OTHER; this.declareClassPrivateMethodInScope(node, kind); } declareClassPrivateMethodInScope(node, kind) { this.classScope.declarePrivateName(this.getPrivateNameSV(node.key), kind, node.key.loc.start); } parsePostMemberNameModifiers(methodOrProp) {} parseClassPrivateProperty(node) { this.parseInitializer(node); this.semicolon(); return this.finishNode(node, "ClassPrivateProperty"); } parseClassProperty(node) { this.parseInitializer(node); this.semicolon(); return this.finishNode(node, "ClassProperty"); } parseClassAccessorProperty(node) { this.parseInitializer(node); this.semicolon(); return this.finishNode(node, "ClassAccessorProperty"); } parseInitializer(node) { this.scope.enter(SCOPE_CLASS | SCOPE_SUPER); this.expressionScope.enter(newExpressionScope()); this.prodParam.enter(PARAM); node.value = this.eat(29) ? this.parseMaybeAssignAllowIn() : null; this.expressionScope.exit(); this.prodParam.exit(); this.scope.exit(); } parseClassId(node, isStatement, optionalId, bindingType = BIND_CLASS) { if (tokenIsIdentifier(this.state.type)) { node.id = this.parseIdentifier(); if (isStatement) { this.checkLVal(node.id, "class name", bindingType); } } else { if (optionalId || !isStatement) { node.id = null; } else { throw this.raise(ErrorMessages.MissingClassName, { at: this.state.startLoc }); } } } parseClassSuper(node) { node.superClass = this.eat(81) ? this.parseExprSubscripts() : null; } parseExport(node) { const hasDefault = this.maybeParseExportDefaultSpecifier(node); const parseAfterDefault = !hasDefault || this.eat(12); const hasStar = parseAfterDefault && this.eatExportStar(node); const hasNamespace = hasStar && this.maybeParseExportNamespaceSpecifier(node); const parseAfterNamespace = parseAfterDefault && (!hasNamespace || this.eat(12)); const isFromRequired = hasDefault || hasStar; if (hasStar && !hasNamespace) { if (hasDefault) this.unexpected(); this.parseExportFrom(node, true); return this.finishNode(node, "ExportAllDeclaration"); } const hasSpecifiers = this.maybeParseExportNamedSpecifiers(node); if (hasDefault && parseAfterDefault && !hasStar && !hasSpecifiers || hasNamespace && parseAfterNamespace && !hasSpecifiers) { throw this.unexpected(null, 5); } let hasDeclaration; if (isFromRequired || hasSpecifiers) { hasDeclaration = false; this.parseExportFrom(node, isFromRequired); } else { hasDeclaration = this.maybeParseExportDeclaration(node); } if (isFromRequired || hasSpecifiers || hasDeclaration) { this.checkExport(node, true, false, !!node.source); return this.finishNode(node, "ExportNamedDeclaration"); } if (this.eat(65)) { node.declaration = this.parseExportDefaultExpression(); this.checkExport(node, true, true); return this.finishNode(node, "ExportDefaultDeclaration"); } throw this.unexpected(null, 5); } eatExportStar(node) { return this.eat(55); } maybeParseExportDefaultSpecifier(node) { if (this.isExportDefaultSpecifier()) { this.expectPlugin("exportDefaultFrom"); const specifier = this.startNode(); specifier.exported = this.parseIdentifier(true); node.specifiers = [this.finishNode(specifier, "ExportDefaultSpecifier")]; return true; } return false; } maybeParseExportNamespaceSpecifier(node) { if (this.isContextual(93)) { if (!node.specifiers) node.specifiers = []; const specifier = this.startNodeAt(this.state.lastTokStart, this.state.lastTokStartLoc); this.next(); specifier.exported = this.parseModuleExportName(); node.specifiers.push(this.finishNode(specifier, "ExportNamespaceSpecifier")); return true; } return false; } maybeParseExportNamedSpecifiers(node) { if (this.match(5)) { if (!node.specifiers) node.specifiers = []; const isTypeExport = node.exportKind === "type"; node.specifiers.push(...this.parseExportSpecifiers(isTypeExport)); node.source = null; node.declaration = null; if (this.hasPlugin("importAssertions")) { node.assertions = []; } return true; } return false; } maybeParseExportDeclaration(node) { if (this.shouldParseExportDeclaration()) { node.specifiers = []; node.source = null; if (this.hasPlugin("importAssertions")) { node.assertions = []; } node.declaration = this.parseExportDeclaration(node); return true; } return false; } isAsyncFunction() { if (!this.isContextual(95)) return false; const next = this.nextTokenStart(); return !lineBreak.test(this.input.slice(this.state.pos, next)) && this.isUnparsedContextual(next, "function"); } parseExportDefaultExpression() { const expr = this.startNode(); const isAsync = this.isAsyncFunction(); if (this.match(68) || isAsync) { this.next(); if (isAsync) { this.next(); } return this.parseFunction(expr, FUNC_STATEMENT | FUNC_NULLABLE_ID, isAsync); } if (this.match(80)) { return this.parseClass(expr, true, true); } if (this.match(26)) { if (this.hasPlugin("decorators") && this.getPluginOption("decorators", "decoratorsBeforeExport")) { this.raise(ErrorMessages.DecoratorBeforeExport, { at: this.state.startLoc }); } this.parseDecorators(false); return this.parseClass(expr, true, true); } if (this.match(75) || this.match(74) || this.isLet()) { throw this.raise(ErrorMessages.UnsupportedDefaultExport, { at: this.state.startLoc }); } const res = this.parseMaybeAssignAllowIn(); this.semicolon(); return res; } parseExportDeclaration(node) { return this.parseStatement(null); } isExportDefaultSpecifier() { const { type } = this.state; if (tokenIsIdentifier(type)) { if (type === 95 && !this.state.containsEsc || type === 99) { return false; } if ((type === 126 || type === 125) && !this.state.containsEsc) { const { type: nextType } = this.lookahead(); if (tokenIsIdentifier(nextType) && nextType !== 97 || nextType === 5) { this.expectOnePlugin(["flow", "typescript"]); return false; } } } else if (!this.match(65)) { return false; } const next = this.nextTokenStart(); const hasFrom = this.isUnparsedContextual(next, "from"); if (this.input.charCodeAt(next) === 44 || tokenIsIdentifier(this.state.type) && hasFrom) { return true; } if (this.match(65) && hasFrom) { const nextAfterFrom = this.input.charCodeAt(this.nextTokenStartSince(next + 4)); return nextAfterFrom === 34 || nextAfterFrom === 39; } return false; } parseExportFrom(node, expect) { if (this.eatContextual(97)) { node.source = this.parseImportSource(); this.checkExport(node); const assertions = this.maybeParseImportAssertions(); if (assertions) { node.assertions = assertions; } } else if (expect) { this.unexpected(); } this.semicolon(); } shouldParseExportDeclaration() { const { type } = this.state; if (type === 26) { this.expectOnePlugin(["decorators", "decorators-legacy"]); if (this.hasPlugin("decorators")) { if (this.getPluginOption("decorators", "decoratorsBeforeExport")) { throw this.raise(ErrorMessages.DecoratorBeforeExport, { at: this.state.startLoc }); } return true; } } return type === 74 || type === 75 || type === 68 || type === 80 || this.isLet() || this.isAsyncFunction(); } checkExport(node, checkNames, isDefault, isFrom) { if (checkNames) { if (isDefault) { this.checkDuplicateExports(node, "default"); if (this.hasPlugin("exportDefaultFrom")) { var _declaration$extra; const declaration = node.declaration; if (declaration.type === "Identifier" && declaration.name === "from" && declaration.end - declaration.start === 4 && !((_declaration$extra = declaration.extra) != null && _declaration$extra.parenthesized)) { this.raise(ErrorMessages.ExportDefaultFromAsIdentifier, { node: declaration }); } } } else if (node.specifiers && node.specifiers.length) { for (const specifier of node.specifiers) { const { exported } = specifier; const exportedName = exported.type === "Identifier" ? exported.name : exported.value; this.checkDuplicateExports(specifier, exportedName); if (!isFrom && specifier.local) { const { local } = specifier; if (local.type !== "Identifier") { this.raise(ErrorMessages.ExportBindingIsString, { node: specifier }, local.value, exportedName); } else { this.checkReservedWord(local.name, local.loc.start, true, false); this.scope.checkLocalExport(local); } } } } else if (node.declaration) { if (node.declaration.type === "FunctionDeclaration" || node.declaration.type === "ClassDeclaration") { const id = node.declaration.id; if (!id) throw new Error("Assertion failure"); this.checkDuplicateExports(node, id.name); } else if (node.declaration.type === "VariableDeclaration") { for (const declaration of node.declaration.declarations) { this.checkDeclaration(declaration.id); } } } } const currentContextDecorators = this.state.decoratorStack[this.state.decoratorStack.length - 1]; if (currentContextDecorators.length) { throw this.raise(ErrorMessages.UnsupportedDecoratorExport, { node }); } } checkDeclaration(node) { if (node.type === "Identifier") { this.checkDuplicateExports(node, node.name); } else if (node.type === "ObjectPattern") { for (const prop of node.properties) { this.checkDeclaration(prop); } } else if (node.type === "ArrayPattern") { for (const elem of node.elements) { if (elem) { this.checkDeclaration(elem); } } } else if (node.type === "ObjectProperty") { this.checkDeclaration(node.value); } else if (node.type === "RestElement") { this.checkDeclaration(node.argument); } else if (node.type === "AssignmentPattern") { this.checkDeclaration(node.left); } } checkDuplicateExports(node, name) { if (this.exportedIdentifiers.has(name)) { this.raise(name === "default" ? ErrorMessages.DuplicateDefaultExport : ErrorMessages.DuplicateExport, { node }, name); } this.exportedIdentifiers.add(name); } parseExportSpecifiers(isInTypeExport) { const nodes = []; let first = true; this.expect(5); while (!this.eat(8)) { if (first) { first = false; } else { this.expect(12); if (this.eat(8)) break; } const isMaybeTypeOnly = this.isContextual(126); const isString = this.match(129); const node = this.startNode(); node.local = this.parseModuleExportName(); nodes.push(this.parseExportSpecifier(node, isString, isInTypeExport, isMaybeTypeOnly)); } return nodes; } parseExportSpecifier(node, isString, isInTypeExport, isMaybeTypeOnly) { if (this.eatContextual(93)) { node.exported = this.parseModuleExportName(); } else if (isString) { node.exported = cloneStringLiteral(node.local); } else if (!node.exported) { node.exported = cloneIdentifier(node.local); } return this.finishNode(node, "ExportSpecifier"); } parseModuleExportName() { if (this.match(129)) { const result = this.parseStringLiteral(this.state.value); const surrogate = result.value.match(loneSurrogate); if (surrogate) { this.raise(ErrorMessages.ModuleExportNameHasLoneSurrogate, { node: result }, surrogate[0].charCodeAt(0).toString(16)); } return result; } return this.parseIdentifier(true); } parseImport(node) { node.specifiers = []; if (!this.match(129)) { const hasDefault = this.maybeParseDefaultImportSpecifier(node); const parseNext = !hasDefault || this.eat(12); const hasStar = parseNext && this.maybeParseStarImportSpecifier(node); if (parseNext && !hasStar) this.parseNamedImportSpecifiers(node); this.expectContextual(97); } node.source = this.parseImportSource(); const assertions = this.maybeParseImportAssertions(); if (assertions) { node.assertions = assertions; } else { const attributes = this.maybeParseModuleAttributes(); if (attributes) { node.attributes = attributes; } } this.semicolon(); return this.finishNode(node, "ImportDeclaration"); } parseImportSource() { if (!this.match(129)) this.unexpected(); return this.parseExprAtom(); } shouldParseDefaultImport(node) { return tokenIsIdentifier(this.state.type); } parseImportSpecifierLocal(node, specifier, type, contextDescription) { specifier.local = this.parseIdentifier(); this.checkLVal(specifier.local, contextDescription, BIND_LEXICAL); node.specifiers.push(this.finishNode(specifier, type)); } parseAssertEntries() { const attrs = []; const attrNames = new Set(); do { if (this.match(8)) { break; } const node = this.startNode(); const keyName = this.state.value; if (attrNames.has(keyName)) { this.raise(ErrorMessages.ModuleAttributesWithDuplicateKeys, { at: this.state.startLoc }, keyName); } attrNames.add(keyName); if (this.match(129)) { node.key = this.parseStringLiteral(keyName); } else { node.key = this.parseIdentifier(true); } this.expect(14); if (!this.match(129)) { throw this.raise(ErrorMessages.ModuleAttributeInvalidValue, { at: this.state.startLoc }); } node.value = this.parseStringLiteral(this.state.value); this.finishNode(node, "ImportAttribute"); attrs.push(node); } while (this.eat(12)); return attrs; } maybeParseModuleAttributes() { if (this.match(76) && !this.hasPrecedingLineBreak()) { this.expectPlugin("moduleAttributes"); this.next(); } else { if (this.hasPlugin("moduleAttributes")) return []; return null; } const attrs = []; const attributes = new Set(); do { const node = this.startNode(); node.key = this.parseIdentifier(true); if (node.key.name !== "type") { this.raise(ErrorMessages.ModuleAttributeDifferentFromType, { node: node.key }, node.key.name); } if (attributes.has(node.key.name)) { this.raise(ErrorMessages.ModuleAttributesWithDuplicateKeys, { node: node.key }, node.key.name); } attributes.add(node.key.name); this.expect(14); if (!this.match(129)) { throw this.raise(ErrorMessages.ModuleAttributeInvalidValue, { at: this.state.startLoc }); } node.value = this.parseStringLiteral(this.state.value); this.finishNode(node, "ImportAttribute"); attrs.push(node); } while (this.eat(12)); return attrs; } maybeParseImportAssertions() { if (this.isContextual(94) && !this.hasPrecedingLineBreak()) { this.expectPlugin("importAssertions"); this.next(); } else { if (this.hasPlugin("importAssertions")) return []; return null; } this.eat(5); const attrs = this.parseAssertEntries(); this.eat(8); return attrs; } maybeParseDefaultImportSpecifier(node) { if (this.shouldParseDefaultImport(node)) { this.parseImportSpecifierLocal(node, this.startNode(), "ImportDefaultSpecifier", "default import specifier"); return true; } return false; } maybeParseStarImportSpecifier(node) { if (this.match(55)) { const specifier = this.startNode(); this.next(); this.expectContextual(93); this.parseImportSpecifierLocal(node, specifier, "ImportNamespaceSpecifier", "import namespace specifier"); return true; } return false; } parseNamedImportSpecifiers(node) { let first = true; this.expect(5); while (!this.eat(8)) { if (first) { first = false; } else { if (this.eat(14)) { throw this.raise(ErrorMessages.DestructureNamedImport, { at: this.state.startLoc }); } this.expect(12); if (this.eat(8)) break; } const specifier = this.startNode(); const importedIsString = this.match(129); const isMaybeTypeOnly = this.isContextual(126); specifier.imported = this.parseModuleExportName(); const importSpecifier = this.parseImportSpecifier(specifier, importedIsString, node.importKind === "type" || node.importKind === "typeof", isMaybeTypeOnly); node.specifiers.push(importSpecifier); } } parseImportSpecifier(specifier, importedIsString, isInTypeOnlyImport, isMaybeTypeOnly) { if (this.eatContextual(93)) { specifier.local = this.parseIdentifier(); } else { const { imported } = specifier; if (importedIsString) { throw this.raise(ErrorMessages.ImportBindingIsString, { node: specifier }, imported.value); } this.checkReservedWord(imported.name, specifier.loc.start, true, true); if (!specifier.local) { specifier.local = cloneIdentifier(imported); } } this.checkLVal(specifier.local, "import specifier", BIND_LEXICAL); return this.finishNode(specifier, "ImportSpecifier"); } isThisParam(param) { return param.type === "Identifier" && param.name === "this"; } } class Parser extends StatementParser { constructor(options, input) { options = getOptions(options); super(options, input); this.options = options; this.initializeScopes(); this.plugins = pluginsMap(this.options.plugins); this.filename = options.sourceFilename; } getScopeHandler() { return ScopeHandler; } parse() { this.enterInitialScopes(); const file = this.startNode(); const program = this.startNode(); this.nextToken(); file.errors = null; this.parseTopLevel(file, program); file.errors = this.state.errors; return file; } } function pluginsMap(plugins) { const pluginMap = new Map(); for (const plugin of plugins) { const [name, options] = Array.isArray(plugin) ? plugin : [plugin, {}]; if (!pluginMap.has(name)) pluginMap.set(name, options || {}); } return pluginMap; } function parse(input, options) { var _options; if (((_options = options) == null ? void 0 : _options.sourceType) === "unambiguous") { options = Object.assign({}, options); try { options.sourceType = "module"; const parser = getParser(options, input); const ast = parser.parse(); if (parser.sawUnambiguousESM) { return ast; } if (parser.ambiguousScriptDifferentAst) { try { options.sourceType = "script"; return getParser(options, input).parse(); } catch (_unused) {} } else { ast.program.sourceType = "script"; } return ast; } catch (moduleError) { try { options.sourceType = "script"; return getParser(options, input).parse(); } catch (_unused2) {} throw moduleError; } } else { return getParser(options, input).parse(); } } function parseExpression(input, options) { const parser = getParser(options, input); if (parser.options.strictMode) { parser.state.strict = true; } return parser.getExpression(); } function generateExportedTokenTypes(internalTokenTypes) { const tokenTypes = {}; for (const typeName of Object.keys(internalTokenTypes)) { tokenTypes[typeName] = getExportedToken(internalTokenTypes[typeName]); } return tokenTypes; } const tokTypes = generateExportedTokenTypes(tt); function getParser(options, input) { let cls = Parser; if (options != null && options.plugins) { validatePlugins(options.plugins); cls = getParserClass(options.plugins); } return new cls(options, input); } const parserClassCache = {}; function getParserClass(pluginsFromOptions) { const pluginList = mixinPluginNames.filter(name => hasPlugin(pluginsFromOptions, name)); const key = pluginList.join("/"); let cls = parserClassCache[key]; if (!cls) { cls = Parser; for (const plugin of pluginList) { cls = mixinPlugins[plugin](cls); } parserClassCache[key] = cls; } return cls; } exports.parse = parse; exports.parseExpression = parseExpression; exports.tokTypes = tokTypes; //# sourceMappingURL=index.js.map