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Diffstat (limited to 'node_modules/@babel/parser/lib/index.js')
| -rw-r--r-- | node_modules/@babel/parser/lib/index.js | 16051 |
1 files changed, 16051 insertions, 0 deletions
diff --git a/node_modules/@babel/parser/lib/index.js b/node_modules/@babel/parser/lib/index.js new file mode 100644 index 0000000..b955911 --- /dev/null +++ b/node_modules/@babel/parser/lib/index.js @@ -0,0 +1,16051 @@ +'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("<tag"), + j_cTag: new TokContext("</tag"), + j_expr: new TokContext("<tag>...</tag>", 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 `<T> async () => {}`, use `async <T>() => {}`.", + 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 `<T,>() => ...`.", + 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 |