From 76cb9c2a39d477a64824a985ade40507e3bbade1 Mon Sep 17 00:00:00 2001 From: Adam Mathes Date: Fri, 13 Feb 2026 21:34:48 -0800 Subject: feat(vanilla): add testing infrastructure and tests (NK-wjnczv) --- vanilla/node_modules/@babel/parser/lib/index.js | 14582 +++++++++++++++++++ .../node_modules/@babel/parser/lib/index.js.map | 1 + 2 files changed, 14583 insertions(+) create mode 100644 vanilla/node_modules/@babel/parser/lib/index.js create mode 100644 vanilla/node_modules/@babel/parser/lib/index.js.map (limited to 'vanilla/node_modules/@babel/parser/lib') diff --git a/vanilla/node_modules/@babel/parser/lib/index.js b/vanilla/node_modules/@babel/parser/lib/index.js new file mode 100644 index 0000000..fa6628c --- /dev/null +++ b/vanilla/node_modules/@babel/parser/lib/index.js @@ -0,0 +1,14582 @@ +'use strict'; + +Object.defineProperty(exports, '__esModule', { + value: true +}); +function _objectWithoutPropertiesLoose(r, e) { + if (null == r) return {}; + var t = {}; + for (var n in r) if ({}.hasOwnProperty.call(r, n)) { + if (-1 !== e.indexOf(n)) continue; + t[n] = r[n]; + } + return t; +} +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); +} +const code = "BABEL_PARSER_SOURCETYPE_MODULE_REQUIRED"; +var ModuleErrors = { + ImportMetaOutsideModule: { + message: `import.meta may appear only with 'sourceType: "module"'`, + code + }, + ImportOutsideModule: { + message: `'import' and 'export' may appear only with 'sourceType: "module"'`, + code + } +}; +const NodeDescriptions = { + ArrayPattern: "array destructuring pattern", + AssignmentExpression: "assignment expression", + AssignmentPattern: "assignment expression", + ArrowFunctionExpression: "arrow function expression", + ConditionalExpression: "conditional expression", + CatchClause: "catch clause", + ForOfStatement: "for-of statement", + ForInStatement: "for-in statement", + ForStatement: "for-loop", + FormalParameters: "function parameter list", + Identifier: "identifier", + ImportSpecifier: "import specifier", + ImportDefaultSpecifier: "import default specifier", + ImportNamespaceSpecifier: "import namespace specifier", + ObjectPattern: "object destructuring pattern", + ParenthesizedExpression: "parenthesized expression", + RestElement: "rest element", + UpdateExpression: { + true: "prefix operation", + false: "postfix operation" + }, + VariableDeclarator: "variable declaration", + YieldExpression: "yield expression" +}; +const toNodeDescription = node => node.type === "UpdateExpression" ? NodeDescriptions.UpdateExpression[`${node.prefix}`] : NodeDescriptions[node.type]; +var StandardErrors = { + AccessorIsGenerator: ({ + kind + }) => `A ${kind}ter 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.", + AwaitUsingNotInAsyncContext: "'await using' is only allowed within async functions and at the top levels of modules.", + AwaitNotInAsyncContext: "'await' is only allowed within async functions and at the top levels of modules.", + BadGetterArity: "A 'get' accessor must not have any formal parameters.", + BadSetterArity: "A 'set' accessor must have exactly one formal parameter.", + BadSetterRestParameter: "A 'set' accessor 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: ({ + kind + }) => `Missing initializer in ${kind} declaration.`, + DecoratorArgumentsOutsideParentheses: "Decorator arguments must be moved inside parentheses: use '@(decorator(args))' instead of '@(decorator)(args)'.", + DecoratorBeforeExport: "Decorators must be placed *before* the 'export' keyword. Remove the 'decoratorsBeforeExport: true' option to use the 'export @decorator class {}' syntax.", + DecoratorsBeforeAfterExport: "Decorators can be placed *either* before or after the 'export' keyword, but not in both locations at the same time.", + DecoratorConstructor: "Decorators can't be used with a constructor. Did you mean '@dec class { ... }'?", + DecoratorExportClass: "Decorators must be placed *after* the 'export' keyword. Remove the 'decoratorsBeforeExport: false' option to use the '@decorator export class {}' syntax.", + DecoratorSemicolon: "Decorators must not be followed by a semicolon.", + DecoratorStaticBlock: "Decorators can't be used with a static block.", + DeferImportRequiresNamespace: 'Only `import defer * as x from "./module"` is valid.', + DeletePrivateField: "Deleting a private field is not allowed.", + DestructureNamedImport: "ES2015 named imports do not destructure. Use another statement for destructuring after the import.", + DuplicateConstructor: "Duplicate constructor in the same class.", + DuplicateDefaultExport: "Only one default export allowed per module.", + DuplicateExport: ({ + exportName + }) => `\`${exportName}\` 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: ({ + localName, + exportName + }) => `A string literal cannot be used as an exported binding without \`from\`.\n- Did you mean \`export { '${localName}' as '${exportName}' } from 'some-module'\`?`, + ExportDefaultFromAsIdentifier: "'from' is not allowed as an identifier after 'export default'.", + ForInOfLoopInitializer: ({ + type + }) => `'${type === "ForInStatement" ? "for-in" : "for-of"}' loop variable declaration may not have an initializer.`, + ForInUsing: "For-in loop may not start with 'using' declaration.", + 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: ({ + type + }) => `Unsyntactic ${type === "BreakStatement" ? "break" : "continue"}.`, + IllegalLanguageModeDirective: "Illegal 'use strict' directive in function with non-simple parameter list.", + IllegalReturn: "'return' outside of function.", + ImportAttributesUseAssert: "The `assert` keyword in import attributes is deprecated and it has been replaced by the `with` keyword. You can enable the `deprecatedImportAssert` parser plugin to suppress this error.", + ImportBindingIsString: ({ + importName + }) => `A string literal cannot be used as an imported binding.\n- Did you mean \`import { "${importName}" as foo }\`?`, + ImportCallArity: `\`import()\` requires exactly one or two arguments.`, + ImportCallNotNewExpression: "Cannot use new with import(...).", + ImportCallSpreadArgument: "`...` is not allowed in `import()`.", + ImportJSONBindingNotDefault: "A JSON module can only be imported with `default`.", + ImportReflectionHasAssertion: "`import module x` cannot have assertions.", + ImportReflectionNotBinding: 'Only `import module x from "./module"` is valid.', + IncompatibleRegExpUVFlags: "The 'u' and 'v' regular expression flags cannot be enabled at the same time.", + InvalidBigIntLiteral: "Invalid BigIntLiteral.", + InvalidCodePoint: "Code point out of bounds.", + InvalidCoverDiscardElement: "'void' must be followed by an expression when not used in a binding position.", + InvalidCoverInitializedName: "Invalid shorthand property initializer.", + InvalidDecimal: "Invalid decimal.", + InvalidDigit: ({ + radix + }) => `Expected number in radix ${radix}.`, + InvalidEscapeSequence: "Bad character escape sequence.", + InvalidEscapeSequenceTemplate: "Invalid escape sequence in template.", + InvalidEscapedReservedWord: ({ + reservedWord + }) => `Escape sequence in keyword ${reservedWord}.`, + InvalidIdentifier: ({ + identifierName + }) => `Invalid identifier ${identifierName}.`, + InvalidLhs: ({ + ancestor + }) => `Invalid left-hand side in ${toNodeDescription(ancestor)}.`, + InvalidLhsBinding: ({ + ancestor + }) => `Binding invalid left-hand side in ${toNodeDescription(ancestor)}.`, + InvalidLhsOptionalChaining: ({ + ancestor + }) => `Invalid optional chaining in the left-hand side of ${toNodeDescription(ancestor)}.`, + InvalidNumber: "Invalid number.", + InvalidOrMissingExponent: "Floating-point numbers require a valid exponent after the 'e'.", + InvalidOrUnexpectedToken: ({ + unexpected + }) => `Unexpected character '${unexpected}'.`, + InvalidParenthesizedAssignment: "Invalid parenthesized assignment pattern.", + InvalidPrivateFieldResolution: ({ + identifierName + }) => `Private name #${identifierName} is not defined.`, + InvalidPropertyBindingPattern: "Binding member expression.", + InvalidRecordProperty: "Only properties and spread elements are allowed in record definitions.", + InvalidRestAssignmentPattern: "Invalid rest operator's argument.", + LabelRedeclaration: ({ + labelName + }) => `Label '${labelName}' is already declared.`, + LetInLexicalBinding: "'let' is disallowed as a lexically bound name.", + 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.", + MissingPlugin: ({ + missingPlugin + }) => `This experimental syntax requires enabling the parser plugin: ${missingPlugin.map(name => JSON.stringify(name)).join(", ")}.`, + MissingOneOfPlugins: ({ + missingPlugin + }) => `This experimental syntax requires enabling one of the following parser plugin(s): ${missingPlugin.map(name => JSON.stringify(name)).join(", ")}.`, + MissingUnicodeEscape: "Expecting Unicode escape sequence \\uXXXX.", + MixingCoalesceWithLogical: "Nullish coalescing operator(??) requires parens when mixing with logical operators.", + ModuleAttributeDifferentFromType: "The only accepted module attribute is `type`.", + ModuleAttributeInvalidValue: "Only string literals are allowed as module attribute values.", + ModuleAttributesWithDuplicateKeys: ({ + key + }) => `Duplicate key "${key}" is not allowed in module attributes.`, + ModuleExportNameHasLoneSurrogate: ({ + surrogateCharCode + }) => `An export name cannot include a lone surrogate, found '\\u${surrogateCharCode.toString(16)}'.`, + ModuleExportUndefined: ({ + localName + }) => `Export '${localName}' 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.", + PrivateInExpectedIn: ({ + identifierName + }) => `Private names are only allowed in property accesses (\`obj.#${identifierName}\`) or in \`in\` expressions (\`#${identifierName} in obj\`).`, + PrivateNameRedeclaration: ({ + identifierName + }) => `Duplicate private name #${identifierName}.`, + 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 or inside a block.", + SloppyFunctionAnnexB: "In non-strict mode code, functions can only be declared at top level, inside a block, or as the body of an if statement.", + SourcePhaseImportRequiresDefault: 'Only `import source x from "./module"` is valid.', + StaticPrototype: "Classes may not have static property named prototype.", + 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: ({ + keyword + }) => `Unexpected keyword '${keyword}'.`, + 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: ({ + reservedWord + }) => `Unexpected reserved word '${reservedWord}'.`, + UnexpectedSuper: "'super' is only allowed in object methods and classes.", + UnexpectedToken: ({ + expected, + unexpected + }) => `Unexpected token${unexpected ? ` '${unexpected}'.` : ""}${expected ? `, expected "${expected}"` : ""}`, + UnexpectedTokenUnaryExponentiation: "Illegal expression. Wrap left hand side or entire exponentiation in parentheses.", + UnexpectedUsingDeclaration: "Using declaration cannot appear in the top level when source type is `script` or in the bare case statement.", + UnexpectedVoidPattern: "Unexpected void binding.", + 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: ({ + target, + onlyValidPropertyName + }) => `The only valid meta property for ${target} is ${target}.${onlyValidPropertyName}.`, + 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.", + UsingDeclarationExport: "Using declaration cannot be exported.", + UsingDeclarationHasBindingPattern: "Using declaration cannot have destructuring patterns.", + VarRedeclaration: ({ + identifierName + }) => `Identifier '${identifierName}' has already been declared.`, + VoidPatternCatchClauseParam: "A void binding can not be the catch clause parameter. Use `try { ... } catch { ... }` if you want to discard the caught error.", + VoidPatternInitializer: "A void binding may not have an initializer.", + YieldBindingIdentifier: "Can not use 'yield' as identifier inside a generator.", + YieldInParameter: "Yield expression is not allowed in formal parameters.", + YieldNotInGeneratorFunction: "'yield' is only allowed within generator functions.", + ZeroDigitNumericSeparator: "Numeric separator can not be used after leading 0." +}; +var StrictModeErrors = { + StrictDelete: "Deleting local variable in strict mode.", + StrictEvalArguments: ({ + referenceName + }) => `Assigning to '${referenceName}' in strict mode.`, + StrictEvalArgumentsBinding: ({ + bindingName + }) => `Binding '${bindingName}' in strict mode.`, + StrictFunction: "In strict mode code, functions can only be declared at top level or inside a block.", + StrictNumericEscape: "The only valid numeric escape in strict mode is '\\0'.", + StrictOctalLiteral: "Legacy octal literals are not allowed in strict mode.", + StrictWith: "'with' in strict mode." +}; +var ParseExpressionErrors = { + ParseExpressionEmptyInput: "Unexpected parseExpression() input: The input is empty or contains only comments.", + ParseExpressionExpectsEOF: ({ + unexpected + }) => `Unexpected parseExpression() input: The input should contain exactly one expression, but the first expression is followed by the unexpected character \`${String.fromCodePoint(unexpected)}\`.` +}; +const UnparenthesizedPipeBodyDescriptions = new Set(["ArrowFunctionExpression", "AssignmentExpression", "ConditionalExpression", "YieldExpression"]); +var PipelineOperatorErrors = Object.assign({ + PipeBodyIsTighter: "Unexpected yield after pipeline body; any yield 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: ({ + token + }) => `Invalid topic token ${token}. In order to use ${token} as a topic reference, the pipelineOperator plugin must be configured with { "proposal": "hack", "topicToken": "${token}" }.`, + PipeTopicUnused: "Hack-style pipe body does not contain a topic reference; Hack-style pipes must use topic at least once.", + PipeUnparenthesizedBody: ({ + type + }) => `Hack-style pipe body cannot be an unparenthesized ${toNodeDescription({ + type + })}; 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.' +}); +const _excluded = ["message"]; +function defineHidden(obj, key, value) { + Object.defineProperty(obj, key, { + enumerable: false, + configurable: true, + value + }); +} +function toParseErrorConstructor({ + toMessage, + code, + reasonCode, + syntaxPlugin +}) { + const hasMissingPlugin = reasonCode === "MissingPlugin" || reasonCode === "MissingOneOfPlugins"; + const oldReasonCodes = { + AccessorCannotDeclareThisParameter: "AccesorCannotDeclareThisParameter", + AccessorCannotHaveTypeParameters: "AccesorCannotHaveTypeParameters", + ConstInitializerMustBeStringOrNumericLiteralOrLiteralEnumReference: "ConstInitiailizerMustBeStringOrNumericLiteralOrLiteralEnumReference", + SetAccessorCannotHaveOptionalParameter: "SetAccesorCannotHaveOptionalParameter", + SetAccessorCannotHaveRestParameter: "SetAccesorCannotHaveRestParameter", + SetAccessorCannotHaveReturnType: "SetAccesorCannotHaveReturnType" + }; + if (oldReasonCodes[reasonCode]) { + reasonCode = oldReasonCodes[reasonCode]; + } + return function constructor(loc, details) { + const error = new SyntaxError(); + error.code = code; + error.reasonCode = reasonCode; + error.loc = loc; + error.pos = loc.index; + error.syntaxPlugin = syntaxPlugin; + if (hasMissingPlugin) { + error.missingPlugin = details.missingPlugin; + } + defineHidden(error, "clone", function clone(overrides = {}) { + var _overrides$loc; + const { + line, + column, + index + } = (_overrides$loc = overrides.loc) != null ? _overrides$loc : loc; + return constructor(new Position(line, column, index), Object.assign({}, details, overrides.details)); + }); + defineHidden(error, "details", details); + Object.defineProperty(error, "message", { + configurable: true, + get() { + const message = `${toMessage(details)} (${loc.line}:${loc.column})`; + this.message = message; + return message; + }, + set(value) { + Object.defineProperty(this, "message", { + value, + writable: true + }); + } + }); + return error; + }; +} +function ParseErrorEnum(argument, syntaxPlugin) { + if (Array.isArray(argument)) { + return parseErrorTemplates => ParseErrorEnum(parseErrorTemplates, argument[0]); + } + const ParseErrorConstructors = {}; + for (const reasonCode of Object.keys(argument)) { + const template = argument[reasonCode]; + const _ref = typeof template === "string" ? { + message: () => template + } : typeof template === "function" ? { + message: template + } : template, + { + message + } = _ref, + rest = _objectWithoutPropertiesLoose(_ref, _excluded); + const toMessage = typeof message === "string" ? () => message : message; + ParseErrorConstructors[reasonCode] = toParseErrorConstructor(Object.assign({ + code: "BABEL_PARSER_SYNTAX_ERROR", + reasonCode, + toMessage + }, syntaxPlugin ? { + syntaxPlugin + } : {}, rest)); + } + return ParseErrorConstructors; +} +const Errors = Object.assign({}, ParseErrorEnum(ModuleErrors), ParseErrorEnum(StandardErrors), ParseErrorEnum(StrictModeErrors), ParseErrorEnum(ParseExpressionErrors), ParseErrorEnum`pipelineOperator`(PipelineOperatorErrors)); +function createDefaultOptions() { + return { + sourceType: "script", + sourceFilename: undefined, + startIndex: 0, + startColumn: 0, + startLine: 1, + allowAwaitOutsideFunction: false, + allowReturnOutsideFunction: false, + allowNewTargetOutsideFunction: false, + allowImportExportEverywhere: false, + allowSuperOutsideMethod: false, + allowUndeclaredExports: false, + allowYieldOutsideFunction: false, + plugins: [], + strictMode: undefined, + ranges: false, + tokens: false, + createImportExpressions: false, + createParenthesizedExpressions: false, + errorRecovery: false, + attachComment: true, + annexB: true + }; +} +function getOptions(opts) { + const options = createDefaultOptions(); + if (opts == null) { + return options; + } + if (opts.annexB != null && opts.annexB !== false) { + throw new Error("The `annexB` option can only be set to `false`."); + } + for (const key of Object.keys(options)) { + if (opts[key] != null) options[key] = opts[key]; + } + if (options.startLine === 1) { + if (opts.startIndex == null && options.startColumn > 0) { + options.startIndex = options.startColumn; + } else if (opts.startColumn == null && options.startIndex > 0) { + options.startColumn = options.startIndex; + } + } else if (opts.startColumn == null || opts.startIndex == null) { + if (opts.startIndex != null) { + throw new Error("With a `startLine > 1` you must also specify `startIndex` and `startColumn`."); + } + } + if (options.sourceType === "commonjs") { + if (opts.allowAwaitOutsideFunction != null) { + throw new Error("The `allowAwaitOutsideFunction` option cannot be used with `sourceType: 'commonjs'`."); + } + if (opts.allowReturnOutsideFunction != null) { + throw new Error("`sourceType: 'commonjs'` implies `allowReturnOutsideFunction: true`, please remove the `allowReturnOutsideFunction` option or use `sourceType: 'script'`."); + } + if (opts.allowNewTargetOutsideFunction != null) { + throw new Error("`sourceType: 'commonjs'` implies `allowNewTargetOutsideFunction: true`, please remove the `allowNewTargetOutsideFunction` option or use `sourceType: 'script'`."); + } + } + return options; +} +const { + defineProperty +} = Object; +const toUnenumerable = (object, key) => { + if (object) { + 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 ESTreeParserMixin extends superClass { + parse() { + const file = toESTreeLocation(super.parse()); + if (this.optionFlags & 256) { + file.tokens = file.tokens.map(toESTreeLocation); + } + return file; + } + parseRegExpLiteral({ + pattern, + flags + }) { + let regex = null; + try { + regex = new RegExp(pattern, flags); + } catch (_) {} + 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); + } + estreeParseChainExpression(node, endLoc) { + const chain = this.startNodeAtNode(node); + chain.expression = node; + return this.finishNodeAt(chain, "ChainExpression", endLoc); + } + directiveToStmt(directive) { + const expression = directive.value; + delete directive.value; + this.castNodeTo(expression, "Literal"); + expression.raw = expression.extra.raw; + expression.value = expression.extra.expressionValue; + const stmt = this.castNodeTo(directive, "ExpressionStatement"); + stmt.expression = expression; + stmt.directive = expression.extra.rawValue; + delete expression.extra; + return stmt; + } + fillOptionalPropertiesForTSESLint(node) {} + cloneEstreeStringLiteral(node) { + const { + start, + end, + loc, + range, + raw, + value + } = node; + const cloned = Object.create(node.constructor.prototype); + cloned.type = "Literal"; + cloned.start = start; + cloned.end = end; + cloned.loc = loc; + cloned.range = range; + cloned.raw = raw; + cloned.value = value; + return cloned; + } + 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, allowDirectives, topLevel, end, afterBlockParse) { + super.parseBlockBody(node, allowDirectives, topLevel, end, afterBlockParse); + const directiveStatements = node.directives.map(d => this.directiveToStmt(d)); + node.body = directiveStatements.concat(node.body); + delete node.directives; + } + parsePrivateName() { + const node = super.parsePrivateName(); + if (!this.getPluginOption("estree", "classFeatures")) { + return node; + } + return this.convertPrivateNameToPrivateIdentifier(node); + } + convertPrivateNameToPrivateIdentifier(node) { + const name = super.getPrivateNameSV(node); + delete node.id; + node.name = name; + return this.castNodeTo(node, "PrivateIdentifier"); + } + 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); + delete funcNode.kind; + const { + typeParameters + } = node; + if (typeParameters) { + delete node.typeParameters; + funcNode.typeParameters = typeParameters; + this.resetStartLocationFromNode(funcNode, typeParameters); + } + const valueNode = this.castNodeTo(funcNode, "FunctionExpression"); + node.value = valueNode; + if (type === "ClassPrivateMethod") { + node.computed = false; + } + if (type === "ObjectMethod") { + if (node.kind === "method") { + node.kind = "init"; + } + node.shorthand = false; + return this.finishNode(node, "Property"); + } else { + return this.finishNode(node, "MethodDefinition"); + } + } + nameIsConstructor(key) { + if (key.type === "Literal") return key.value === "constructor"; + return super.nameIsConstructor(key); + } + parseClassProperty(...args) { + const propertyNode = super.parseClassProperty(...args); + if (!this.getPluginOption("estree", "classFeatures")) { + return propertyNode; + } + this.castNodeTo(propertyNode, "PropertyDefinition"); + return propertyNode; + } + parseClassPrivateProperty(...args) { + const propertyNode = super.parseClassPrivateProperty(...args); + if (!this.getPluginOption("estree", "classFeatures")) { + return propertyNode; + } + this.castNodeTo(propertyNode, "PropertyDefinition"); + propertyNode.computed = false; + return propertyNode; + } + parseClassAccessorProperty(node) { + const accessorPropertyNode = super.parseClassAccessorProperty(node); + if (!this.getPluginOption("estree", "classFeatures")) { + return accessorPropertyNode; + } + if (accessorPropertyNode.abstract && this.hasPlugin("typescript")) { + delete accessorPropertyNode.abstract; + this.castNodeTo(accessorPropertyNode, "TSAbstractAccessorProperty"); + } else { + this.castNodeTo(accessorPropertyNode, "AccessorProperty"); + } + return accessorPropertyNode; + } + parseObjectProperty(prop, startLoc, isPattern, refExpressionErrors) { + const node = super.parseObjectProperty(prop, startLoc, isPattern, refExpressionErrors); + if (node) { + node.kind = "init"; + this.castNodeTo(node, "Property"); + } + return node; + } + finishObjectProperty(node) { + node.kind = "init"; + return this.finishNode(node, "Property"); + } + isValidLVal(type, disallowCallExpression, isUnparenthesizedInAssign, binding) { + return type === "Property" ? "value" : super.isValidLVal(type, disallowCallExpression, isUnparenthesizedInAssign, binding); + } + 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); + } else { + super.toAssignable(node, isLHS); + } + } + toAssignableObjectExpressionProp(prop, isLast, isLHS) { + if (prop.type === "Property" && (prop.kind === "get" || prop.kind === "set")) { + this.raise(Errors.PatternHasAccessor, prop.key); + } else if (prop.type === "Property" && prop.method) { + this.raise(Errors.PatternHasMethod, prop.key); + } else { + super.toAssignableObjectExpressionProp(prop, isLast, isLHS); + } + } + finishCallExpression(unfinished, optional) { + const node = super.finishCallExpression(unfinished, optional); + if (node.callee.type === "Import") { + var _ref, _ref2; + this.castNodeTo(node, "ImportExpression"); + node.source = node.arguments[0]; + node.options = (_ref = node.arguments[1]) != null ? _ref : null; + node.attributes = (_ref2 = node.arguments[1]) != null ? _ref2 : null; + delete node.arguments; + delete node.callee; + } else if (node.type === "OptionalCallExpression") { + this.castNodeTo(node, "CallExpression"); + } else { + node.optional = false; + } + return node; + } + toReferencedArguments(node) { + if (node.type === "ImportExpression") { + return; + } + super.toReferencedArguments(node); + } + parseExport(unfinished, decorators) { + const exportStartLoc = this.state.lastTokStartLoc; + const node = super.parseExport(unfinished, decorators); + switch (node.type) { + case "ExportAllDeclaration": + node.exported = null; + break; + case "ExportNamedDeclaration": + if (node.specifiers.length === 1 && node.specifiers[0].type === "ExportNamespaceSpecifier") { + this.castNodeTo(node, "ExportAllDeclaration"); + node.exported = node.specifiers[0].exported; + delete node.specifiers; + } + case "ExportDefaultDeclaration": + { + var _declaration$decorato; + const { + declaration + } = node; + if ((declaration == null ? void 0 : declaration.type) === "ClassDeclaration" && ((_declaration$decorato = declaration.decorators) == null ? void 0 : _declaration$decorato.length) > 0 && declaration.start === node.start) { + this.resetStartLocation(node, exportStartLoc); + } + } + break; + } + return node; + } + stopParseSubscript(base, state) { + const node = super.stopParseSubscript(base, state); + if (state.optionalChainMember) { + return this.estreeParseChainExpression(node, base.loc.end); + } + return node; + } + parseMember(base, startLoc, state, computed, optional) { + const node = super.parseMember(base, startLoc, state, computed, optional); + if (node.type === "OptionalMemberExpression") { + this.castNodeTo(node, "MemberExpression"); + } else { + node.optional = false; + } + return node; + } + isOptionalMemberExpression(node) { + if (node.type === "ChainExpression") { + return node.expression.type === "MemberExpression"; + } + return super.isOptionalMemberExpression(node); + } + hasPropertyAsPrivateName(node) { + if (node.type === "ChainExpression") { + node = node.expression; + } + return super.hasPropertyAsPrivateName(node); + } + isObjectProperty(node) { + return node.type === "Property" && node.kind === "init" && !node.method; + } + isObjectMethod(node) { + return node.type === "Property" && (node.method || node.kind === "get" || node.kind === "set"); + } + castNodeTo(node, type) { + const result = super.castNodeTo(node, type); + this.fillOptionalPropertiesForTSESLint(result); + return result; + } + cloneIdentifier(node) { + const cloned = super.cloneIdentifier(node); + this.fillOptionalPropertiesForTSESLint(cloned); + return cloned; + } + cloneStringLiteral(node) { + if (node.type === "Literal") { + return this.cloneEstreeStringLiteral(node); + } + return super.cloneStringLiteral(node); + } + finishNodeAt(node, type, endLoc) { + return toESTreeLocation(super.finishNodeAt(node, type, endLoc)); + } + finishNode(node, type) { + const result = super.finishNode(node, type); + this.fillOptionalPropertiesForTSESLint(result); + return result; + } + resetStartLocation(node, startLoc) { + super.resetStartLocation(node, startLoc); + toESTreeLocation(node); + } + resetEndLocation(node, endLoc = this.state.lastTokEndLoc) { + super.resetEndLocation(node, endLoc); + toESTreeLocation(node); + } +}; +class TokContext { + constructor(token, preserveSpace) { + this.token = void 0; + this.preserveSpace = void 0; + this.token = token; + this.preserveSpace = !!preserveSpace; + } +} +const types = { + brace: new TokContext("{"), + j_oTag: new TokContext("...", true) +}; +types.template = new TokContext("`", true); +const beforeExpr = true; +const startsExpr = true; +const isLoop = true; +const isAssign = true; +const prefix = true; +const postfix = true; +class ExportedTokenType { + constructor(label, conf = {}) { + this.label = void 0; + this.keyword = void 0; + this.beforeExpr = void 0; + this.startsExpr = void 0; + this.rightAssociative = void 0; + this.isLoop = void 0; + this.isAssign = void 0; + this.prefix = void 0; + this.postfix = void 0; + this.binop = void 0; + this.label = label; + this.keyword = conf.keyword; + this.beforeExpr = !!conf.beforeExpr; + this.startsExpr = !!conf.startsExpr; + this.rightAssociative = !!conf.rightAssociative; + this.isLoop = !!conf.isLoop; + this.isAssign = !!conf.isAssign; + this.prefix = !!conf.prefix; + this.postfix = !!conf.postfix; + this.binop = conf.binop != null ? conf.binop : null; + this.updateContext = null; + } +} +const keywords$1 = new Map(); +function createKeyword(name, options = {}) { + options.keyword = name; + const token = createToken(name, options); + keywords$1.set(name, token); + return token; +} +function createBinop(name, binop) { + return createToken(name, { + beforeExpr, + binop + }); +} +let tokenTypeCounter = -1; +const tokenTypes = []; +const tokenLabels = []; +const tokenBinops = []; +const tokenBeforeExprs = []; +const tokenStartsExprs = []; +const tokenPrefixes = []; +function createToken(name, options = {}) { + var _options$binop, _options$beforeExpr, _options$startsExpr, _options$prefix; + ++tokenTypeCounter; + tokenLabels.push(name); + tokenBinops.push((_options$binop = options.binop) != null ? _options$binop : -1); + tokenBeforeExprs.push((_options$beforeExpr = options.beforeExpr) != null ? _options$beforeExpr : false); + tokenStartsExprs.push((_options$startsExpr = options.startsExpr) != null ? _options$startsExpr : false); + tokenPrefixes.push((_options$prefix = options.prefix) != null ? _options$prefix : false); + tokenTypes.push(new ExportedTokenType(name, options)); + return tokenTypeCounter; +} +function createKeywordLike(name, options = {}) { + var _options$binop2, _options$beforeExpr2, _options$startsExpr2, _options$prefix2; + ++tokenTypeCounter; + keywords$1.set(name, tokenTypeCounter); + tokenLabels.push(name); + tokenBinops.push((_options$binop2 = options.binop) != null ? _options$binop2 : -1); + tokenBeforeExprs.push((_options$beforeExpr2 = options.beforeExpr) != null ? _options$beforeExpr2 : false); + tokenStartsExprs.push((_options$startsExpr2 = options.startsExpr) != null ? _options$startsExpr2 : false); + tokenPrefixes.push((_options$prefix2 = options.prefix) != null ? _options$prefix2 : false); + tokenTypes.push(new ExportedTokenType("name", options)); + return tokenTypeCounter; +} +const tt = { + bracketL: createToken("[", { + beforeExpr, + startsExpr + }), + bracketHashL: createToken("#[", { + beforeExpr, + startsExpr + }), + bracketBarL: createToken("[|", { + beforeExpr, + startsExpr + }), + bracketR: createToken("]"), + bracketBarR: createToken("|]"), + braceL: createToken("{", { + beforeExpr, + startsExpr + }), + braceBarL: createToken("{|", { + beforeExpr, + startsExpr + }), + braceHashL: createToken("#{", { + beforeExpr, + startsExpr + }), + braceR: createToken("}"), + braceBarR: createToken("|}"), + parenL: createToken("(", { + beforeExpr, + startsExpr + }), + parenR: createToken(")"), + comma: createToken(",", { + beforeExpr + }), + semi: createToken(";", { + beforeExpr + }), + colon: createToken(":", { + beforeExpr + }), + doubleColon: createToken("::", { + beforeExpr + }), + dot: createToken("."), + question: createToken("?", { + beforeExpr + }), + questionDot: createToken("?."), + arrow: createToken("=>", { + beforeExpr + }), + template: createToken("template"), + ellipsis: createToken("...", { + beforeExpr + }), + backQuote: createToken("`", { + startsExpr + }), + dollarBraceL: createToken("${", { + 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 + }), + _defer: createKeywordLike("defer", { + 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 + }), + _source: createKeywordLike("source", { + startsExpr + }), + _static: createKeywordLike("static", { + startsExpr + }), + _using: createKeywordLike("using", { + 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 + }), + _satisfies: createKeywordLike("satisfies", { + 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 + }), + placeholder: createToken("%%", { + 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 + }), + jsxTagStart: createToken("jsxTagStart", { + startsExpr + }), + jsxTagEnd: createToken("jsxTagEnd") +}; +function tokenIsIdentifier(token) { + return token >= 93 && token <= 133; +} +function tokenKeywordOrIdentifierIsKeyword(token) { + return token <= 92; +} +function tokenIsKeywordOrIdentifier(token) { + return token >= 58 && token <= 133; +} +function tokenIsLiteralPropertyName(token) { + return token >= 58 && token <= 137; +} +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 >= 129 && token <= 131; +} +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 >= 121 && token <= 123; +} +function tokenIsTSDeclarationStart(token) { + return token >= 124 && token <= 130; +} +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[143].updateContext = context => { + context.push(types.j_expr, types.j_oTag); +}; +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-\u088f\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\u0c5c\u0c5d\u0c60\u0c61\u0c80\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cdc-\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-\u1c8a\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-\ua7dc\ua7f1-\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 = "\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\u0897-\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\u0cf3\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-\u0ece\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-\u1add\u1ae0-\u1aeb\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\u200c\u200d\u203f\u2040\u2054\u20d0-\u20dc\u20e1\u20e5-\u20f0\u2cef-\u2cf1\u2d7f\u2de0-\u2dff\u302a-\u302f\u3099\u309a\u30fb\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\uff65"; +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, 4, 51, 13, 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, 7, 25, 39, 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, 39, 27, 10, 22, 251, 41, 7, 1, 17, 5, 57, 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, 20, 1, 64, 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, 31, 9, 2, 0, 3, 0, 2, 37, 2, 0, 26, 0, 2, 0, 45, 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, 200, 32, 32, 8, 2, 36, 18, 0, 50, 29, 113, 6, 2, 1, 2, 37, 22, 0, 26, 5, 2, 1, 2, 31, 15, 0, 24, 43, 261, 18, 16, 0, 2, 12, 2, 33, 125, 0, 80, 921, 103, 110, 18, 195, 2637, 96, 16, 1071, 18, 5, 26, 3994, 6, 582, 6842, 29, 1763, 568, 8, 30, 18, 78, 18, 29, 19, 47, 17, 3, 32, 20, 6, 18, 433, 44, 212, 63, 33, 24, 3, 24, 45, 74, 6, 0, 67, 12, 65, 1, 2, 0, 15, 4, 10, 7381, 42, 31, 98, 114, 8702, 3, 2, 6, 2, 1, 2, 290, 16, 0, 30, 2, 3, 0, 15, 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, 7, 5, 262, 61, 147, 44, 11, 6, 17, 0, 322, 29, 19, 43, 485, 27, 229, 29, 3, 0, 208, 30, 2, 2, 2, 1, 2, 6, 3, 4, 10, 1, 225, 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, 4381, 3, 5773, 3, 7472, 16, 621, 2467, 541, 1507, 4938, 6, 8489]; +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, 7, 9, 32, 4, 318, 1, 78, 5, 71, 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, 3, 0, 158, 11, 6, 9, 7, 3, 56, 1, 2, 6, 3, 1, 3, 2, 10, 0, 11, 1, 3, 6, 4, 4, 68, 8, 2, 0, 3, 0, 2, 3, 2, 4, 2, 0, 15, 1, 83, 17, 10, 9, 5, 0, 82, 19, 13, 9, 214, 6, 3, 8, 28, 1, 83, 16, 16, 9, 82, 12, 9, 9, 7, 19, 58, 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, 199, 7, 137, 9, 54, 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, 55, 9, 266, 3, 10, 1, 2, 0, 49, 6, 4, 4, 14, 10, 5350, 0, 7, 14, 11465, 27, 2343, 9, 87, 9, 39, 4, 60, 6, 26, 9, 535, 9, 470, 0, 2, 54, 8, 3, 82, 0, 12, 1, 19628, 1, 4178, 9, 519, 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, 101, 0, 161, 6, 10, 9, 357, 0, 62, 13, 499, 13, 245, 1, 2, 9, 233, 0, 3, 0, 8, 1, 6, 0, 475, 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); +} +class Scope { + constructor(flags) { + this.flags = 0; + this.names = new Map(); + this.firstLexicalName = ""; + this.flags = flags; + } +} +class ScopeHandler { + constructor(parser, inModule) { + this.parser = void 0; + this.scopeStack = []; + this.inModule = void 0; + this.undefinedExports = new Map(); + this.parser = parser; + this.inModule = inModule; + } + get inTopLevel() { + return (this.currentScope().flags & 1) > 0; + } + get inFunction() { + return (this.currentVarScopeFlags() & 2) > 0; + } + get allowSuper() { + return (this.currentThisScopeFlags() & 16) > 0; + } + get allowDirectSuper() { + return (this.currentThisScopeFlags() & 32) > 0; + } + get allowNewTarget() { + return (this.currentThisScopeFlags() & 512) > 0; + } + get inClass() { + return (this.currentThisScopeFlags() & 64) > 0; + } + get inClassAndNotInNonArrowFunction() { + const flags = this.currentThisScopeFlags(); + return (flags & 64) > 0 && (flags & 2) === 0; + } + get inStaticBlock() { + for (let i = this.scopeStack.length - 1;; i--) { + const { + flags + } = this.scopeStack[i]; + if (flags & 128) { + return true; + } + if (flags & (1667 | 64)) { + return false; + } + } + } + get inNonArrowFunction() { + return (this.currentThisScopeFlags() & 2) > 0; + } + get inBareCaseStatement() { + return (this.currentScope().flags & 256) > 0; + } + get treatFunctionsAsVar() { + return this.treatFunctionsAsVarInScope(this.currentScope()); + } + createScope(flags) { + return new Scope(flags); + } + enter(flags) { + this.scopeStack.push(this.createScope(flags)); + } + exit() { + const scope = this.scopeStack.pop(); + return scope.flags; + } + treatFunctionsAsVarInScope(scope) { + return !!(scope.flags & (2 | 128) || !this.parser.inModule && scope.flags & 1); + } + declareName(name, bindingType, loc) { + let scope = this.currentScope(); + if (bindingType & 8 || bindingType & 16) { + this.checkRedeclarationInScope(scope, name, bindingType, loc); + let type = scope.names.get(name) || 0; + if (bindingType & 16) { + type = type | 4; + } else { + if (!scope.firstLexicalName) { + scope.firstLexicalName = name; + } + type = type | 2; + } + scope.names.set(name, type); + if (bindingType & 8) { + this.maybeExportDefined(scope, name); + } + } else if (bindingType & 4) { + for (let i = this.scopeStack.length - 1; i >= 0; --i) { + scope = this.scopeStack[i]; + this.checkRedeclarationInScope(scope, name, bindingType, loc); + scope.names.set(name, (scope.names.get(name) || 0) | 1); + this.maybeExportDefined(scope, name); + if (scope.flags & 1667) break; + } + } + if (this.parser.inModule && scope.flags & 1) { + this.undefinedExports.delete(name); + } + } + maybeExportDefined(scope, name) { + if (this.parser.inModule && scope.flags & 1) { + this.undefinedExports.delete(name); + } + } + checkRedeclarationInScope(scope, name, bindingType, loc) { + if (this.isRedeclaredInScope(scope, name, bindingType)) { + this.parser.raise(Errors.VarRedeclaration, loc, { + identifierName: name + }); + } + } + isRedeclaredInScope(scope, name, bindingType) { + if (!(bindingType & 1)) return false; + if (bindingType & 8) { + return scope.names.has(name); + } + const type = scope.names.get(name) || 0; + if (bindingType & 16) { + return (type & 2) > 0 || !this.treatFunctionsAsVarInScope(scope) && (type & 1) > 0; + } + return (type & 2) > 0 && !(scope.flags & 8 && scope.firstLexicalName === name) || !this.treatFunctionsAsVarInScope(scope) && (type & 4) > 0; + } + checkLocalExport(id) { + const { + name + } = id; + const topLevelScope = this.scopeStack[0]; + if (!topLevelScope.names.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 & 1667) { + return flags; + } + } + } + currentThisScopeFlags() { + for (let i = this.scopeStack.length - 1;; i--) { + const { + flags + } = this.scopeStack[i]; + if (flags & (1667 | 64) && !(flags & 4)) { + 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 & 2048) { + this.checkRedeclarationInScope(scope, name, bindingType, loc); + this.maybeExportDefined(scope, name); + scope.declareFunctions.add(name); + return; + } + super.declareName(name, bindingType, loc); + } + isRedeclaredInScope(scope, name, bindingType) { + if (super.isRedeclaredInScope(scope, name, bindingType)) return true; + if (bindingType & 2048 && !scope.declareFunctions.has(name)) { + const type = scope.names.get(name); + return (type & 4) > 0 || (type & 2) > 0; + } + return false; + } + checkLocalExport(id) { + if (!this.scopeStack[0].declareFunctions.has(id.name)) { + super.checkLocalExport(id); + } + } +} +const reservedTypes = new Set(["_", "any", "bool", "boolean", "empty", "extends", "false", "interface", "mixed", "null", "number", "static", "string", "true", "typeof", "void"]); +const FlowErrors = ParseErrorEnum`flow`({ + 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: ({ + reservedType + }) => `Cannot overwrite reserved type ${reservedType}.`, + DeclareClassElement: "The `declare` modifier can only appear on class fields.", + DeclareClassFieldInitializer: "Initializers are not allowed in fields with the `declare` modifier.", + DuplicateDeclareModuleExports: "Duplicate `declare module.exports` statement.", + EnumBooleanMemberNotInitialized: ({ + memberName, + enumName + }) => `Boolean enum members need to be initialized. Use either \`${memberName} = true,\` or \`${memberName} = false,\` in enum \`${enumName}\`.`, + EnumDuplicateMemberName: ({ + memberName, + enumName + }) => `Enum member names need to be unique, but the name \`${memberName}\` has already been used before in enum \`${enumName}\`.`, + EnumInconsistentMemberValues: ({ + enumName + }) => `Enum \`${enumName}\` has inconsistent member initializers. Either use no initializers, or consistently use literals (either booleans, numbers, or strings) for all member initializers.`, + EnumInvalidExplicitType: ({ + invalidEnumType, + enumName + }) => `Enum type \`${invalidEnumType}\` is not valid. Use one of \`boolean\`, \`number\`, \`string\`, or \`symbol\` in enum \`${enumName}\`.`, + EnumInvalidExplicitTypeUnknownSupplied: ({ + enumName + }) => `Supplied enum type is not valid. Use one of \`boolean\`, \`number\`, \`string\`, or \`symbol\` in enum \`${enumName}\`.`, + EnumInvalidMemberInitializerPrimaryType: ({ + enumName, + memberName, + explicitType + }) => `Enum \`${enumName}\` has type \`${explicitType}\`, so the initializer of \`${memberName}\` needs to be a ${explicitType} literal.`, + EnumInvalidMemberInitializerSymbolType: ({ + enumName, + memberName + }) => `Symbol enum members cannot be initialized. Use \`${memberName},\` in enum \`${enumName}\`.`, + EnumInvalidMemberInitializerUnknownType: ({ + enumName, + memberName + }) => `The enum member initializer for \`${memberName}\` needs to be a literal (either a boolean, number, or string) in enum \`${enumName}\`.`, + EnumInvalidMemberName: ({ + enumName, + memberName, + suggestion + }) => `Enum member names cannot start with lowercase 'a' through 'z'. Instead of using \`${memberName}\`, consider using \`${suggestion}\`, in enum \`${enumName}\`.`, + EnumNumberMemberNotInitialized: ({ + enumName, + memberName + }) => `Number enum members need to be initialized, e.g. \`${memberName} = 1\` in enum \`${enumName}\`.`, + EnumStringMemberInconsistentlyInitialized: ({ + enumName + }) => `String enum members need to consistently either all use initializers, or use no initializers, in enum \`${enumName}\`.`, + GetterMayNotHaveThisParam: "A getter cannot have a `this` parameter.", + ImportReflectionHasImportType: "An `import module` declaration can not use `type` or `typeof` keyword.", + 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: Object.assign({ + message: "A binding pattern parameter cannot be optional in an implementation signature." + }, { + reasonCode: "OptionalBindingPattern" + }), + 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: ({ + reservedType + }) => `Unexpected reserved type ${reservedType}.`, + UnexpectedReservedUnderscore: "`_` is only allowed as a type argument to call or new.", + UnexpectedSpaceBetweenModuloChecks: "Spaces between `%` and `checks` are not allowed here.", + UnexpectedSpreadType: "Spread operator cannot appear in class or interface definitions.", + UnexpectedSubtractionOperand: 'Unexpected token, expected "number" or "bigint".', + UnexpectedTokenAfterTypeParameter: "Expected an arrow function after this type parameter declaration.", + UnexpectedTypeParameterBeforeAsyncArrowFunction: "Type parameters must come after the async keyword, e.g. instead of ` async () => {}`, use `async () => {}`.", + UnsupportedDeclareExportKind: ({ + unsupportedExportKind, + suggestion + }) => `\`declare export ${unsupportedExportKind}\` is not supported. Use \`${suggestion}\` instead.`, + UnsupportedStatementInDeclareModule: "Only declares and type imports are allowed inside declare module.", + UnterminatedFlowComment: "Unterminated flow-comment." +}); +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"; +} +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 FlowParserMixin extends superClass { + constructor(...args) { + super(...args); + this.flowPragma = undefined; + } + getScopeHandler() { + return FlowScopeHandler; + } + shouldParseTypes() { + return this.getPluginOption("flow", "all") || this.flowPragma === "flow"; + } + finishToken(type, val) { + if (type !== 134 && type !== 13 && type !== 28) { + if (this.flowPragma === undefined) { + this.flowPragma = null; + } + } + 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"); + } + } + 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(110); + if (this.state.lastTokStartLoc.index > moduloLoc.index + 1) { + this.raise(FlowErrors.UnexpectedSpaceBetweenModuloChecks, moduloLoc); + } + if (this.eat(10)) { + node.value = super.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, 2048, 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(127)) { + if (this.match(16)) { + return this.flowParseDeclareModuleExports(node); + } else { + if (insideModule) { + this.raise(FlowErrors.NestedDeclareModule, this.state.lastTokStartLoc); + } + return this.flowParseDeclareModule(node); + } + } else if (this.isContextual(130)) { + return this.flowParseDeclareTypeAlias(node); + } else if (this.isContextual(131)) { + return this.flowParseDeclareOpaqueType(node); + } else if (this.isContextual(129)) { + return this.flowParseDeclareInterface(node); + } else if (this.match(82)) { + return this.flowParseDeclareExportDeclaration(node, insideModule); + } + throw this.unexpected(); + } + flowParseDeclareVariable(node) { + this.next(); + node.id = this.flowParseTypeAnnotatableIdentifier(true); + this.scope.declareName(node.id.name, 5, node.id.loc.start); + this.semicolon(); + return this.finishNode(node, "DeclareVariable"); + } + flowParseDeclareModule(node) { + this.scope.enter(0); + if (this.match(134)) { + node.id = super.parseExprAtom(); + } else { + node.id = this.parseIdentifier(); + } + const bodyNode = node.body = this.startNode(); + const body = bodyNode.body = []; + this.expect(5); + while (!this.match(8)) { + const bodyNode = this.startNode(); + if (this.match(83)) { + this.next(); + if (!this.isContextual(130) && !this.match(87)) { + this.raise(FlowErrors.InvalidNonTypeImportInDeclareModule, this.state.lastTokStartLoc); + } + body.push(super.parseImport(bodyNode)); + } else { + this.expectContextual(125, FlowErrors.UnsupportedStatementInDeclareModule); + body.push(this.flowParseDeclare(bodyNode, true)); + } + } + 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, bodyElement); + } + kind = "ES"; + } else if (bodyElement.type === "DeclareModuleExports") { + if (hasModuleExport) { + this.raise(FlowErrors.DuplicateDeclareModuleExports, bodyElement); + } + if (kind === "ES") { + this.raise(FlowErrors.AmbiguousDeclareModuleKind, 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(130) || this.isContextual(129)) && !insideModule) { + const label = this.state.value; + throw this.raise(FlowErrors.UnsupportedDeclareExportKind, this.state.startLoc, { + unsupportedExportKind: label, + suggestion: exportSuggestions[label] + }); + } + if (this.match(74) || this.match(68) || this.match(80) || this.isContextual(131)) { + node.declaration = this.flowParseDeclare(this.startNode()); + node.default = false; + return this.finishNode(node, "DeclareExportDeclaration"); + } else if (this.match(55) || this.match(5) || this.isContextual(129) || this.isContextual(130) || this.isContextual(131)) { + node = this.parseExport(node, null); + if (node.type === "ExportNamedDeclaration") { + node.default = false; + delete node.exportKind; + return this.castNodeTo(node, "DeclareExportDeclaration"); + } else { + return this.castNodeTo(node, "DeclareExportAllDeclaration"); + } + } + } + throw this.unexpected(); + } + flowParseDeclareModuleExports(node) { + this.next(); + this.expectContextual(111); + node.typeAnnotation = this.flowParseTypeAnnotation(); + this.semicolon(); + return this.finishNode(node, "DeclareModuleExports"); + } + flowParseDeclareTypeAlias(node) { + this.next(); + const finished = this.flowParseTypeAlias(node); + this.castNodeTo(finished, "DeclareTypeAlias"); + return finished; + } + flowParseDeclareOpaqueType(node) { + this.next(); + const finished = this.flowParseOpaqueType(node, true); + this.castNodeTo(finished, "DeclareOpaqueType"); + return finished; + } + flowParseDeclareInterface(node) { + this.next(); + this.flowParseInterfaceish(node, false); + return this.finishNode(node, "DeclareInterface"); + } + flowParseInterfaceish(node, isClass) { + node.id = this.flowParseRestrictedIdentifier(!isClass, true); + this.scope.declareName(node.id.name, isClass ? 17 : 8201, node.id.loc.start); + if (this.match(47)) { + node.typeParameters = this.flowParseTypeParameterDeclaration(); + } else { + node.typeParameters = null; + } + node.extends = []; + if (this.eat(81)) { + do { + node.extends.push(this.flowParseInterfaceExtends()); + } while (!isClass && this.eat(12)); + } + if (isClass) { + node.implements = []; + node.mixins = []; + if (this.eatContextual(117)) { + do { + node.mixins.push(this.flowParseInterfaceExtends()); + } while (this.eat(12)); + } + if (this.eatContextual(113)) { + 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, false); + return this.finishNode(node, "InterfaceDeclaration"); + } + checkNotUnderscore(word) { + if (word === "_") { + this.raise(FlowErrors.UnexpectedReservedUnderscore, this.state.startLoc); + } + } + checkReservedType(word, startLoc, declaration) { + if (!reservedTypes.has(word)) return; + this.raise(declaration ? FlowErrors.AssignReservedType : FlowErrors.UnexpectedReservedType, startLoc, { + reservedType: 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, 8201, 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(130); + node.id = this.flowParseRestrictedIdentifier(true, true); + this.scope.declareName(node.id.name, 8201, 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, 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(143)) { + 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"); + } + flowInTopLevelContext(cb) { + if (this.curContext() !== types.brace) { + const oldContext = this.state.context; + this.state.context = [oldContext[0]]; + try { + return cb(); + } finally { + this.state.context = oldContext; + } + } else { + return cb(); + } + } + flowParseTypeParameterInstantiationInExpression() { + if (this.reScan_lt() !== 47) return; + return this.flowParseTypeParameterInstantiation(); + } + flowParseTypeParameterInstantiation() { + const node = this.startNode(); + const oldInType = this.state.inType; + this.state.inType = true; + node.params = []; + this.flowInTopLevelContext(() => { + 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.state.inType = oldInType; + if (!this.state.inType && this.curContext() === types.brace) { + this.reScan_lt_gt(); + } + this.expect(48); + return this.finishNode(node, "TypeParameterInstantiation"); + } + flowParseTypeParameterInstantiationCallOrNew() { + if (this.reScan_lt() !== 47) return null; + 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(129); + 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(135) || this.match(134) ? super.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.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(118)) { + const lookahead = this.lookahead(); + if (lookahead.type !== 14 && lookahead.type !== 17) { + this.next(); + protoStartLoc = this.state.startLoc; + allowStatic = false; + } + } + if (allowStatic && this.isContextual(106)) { + 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(99) || this.isContextual(104)) { + 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, 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, this.state.lastTokStartLoc); + } else if (!allowInexact) { + this.raise(FlowErrors.InexactInsideExact, this.state.lastTokStartLoc); + } + if (variance) { + this.raise(FlowErrors.InexactVariance, variance); + } + return null; + } + if (!allowSpread) { + this.raise(FlowErrors.UnexpectedSpreadType, this.state.lastTokStartLoc); + } + if (protoStartLoc != null) { + this.unexpected(protoStartLoc); + } + if (variance) { + this.raise(FlowErrors.SpreadVariance, 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.loc.start)); + if (kind === "get" || kind === "set") { + this.flowCheckGetterSetterParams(node); + } + if (!allowSpread && node.key.name === "constructor" && node.value.this) { + this.raise(FlowErrors.ThisParamBannedInConstructor, 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, property.value.this); + } + if (length !== paramCount) { + this.raise(property.kind === "get" ? Errors.BadGetterArity : Errors.BadSetterArity, property); + } + if (property.kind === "set" && property.value.rest) { + this.raise(Errors.BadSetterRestParameter, property); + } + } + flowObjectTypeSemicolon() { + if (!this.eat(13) && !this.eat(12) && !this.match(8) && !this.match(9)) { + this.unexpected(); + } + } + flowParseQualifiedTypeIdentifier(startLoc, id) { + startLoc != null ? startLoc : startLoc = this.state.startLoc; + let node = id || this.flowParseRestrictedIdentifier(true); + while (this.eat(16)) { + const node2 = this.startNodeAt(startLoc); + node2.qualification = node; + node2.id = this.flowParseRestrictedIdentifier(true); + node = this.finishNode(node2, "QualifiedTypeIdentifier"); + } + return node; + } + flowParseGenericType(startLoc, id) { + const node = this.startNodeAt(startLoc); + node.typeParameters = null; + node.id = this.flowParseQualifiedTypeIdentifier(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.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(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(startLoc, id); + } + } + flowParsePrimaryType() { + 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: + { + const node = this.startNode(); + 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: + { + const node = this.startNode(); + 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 134: + 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(135)) { + return this.parseLiteralAtNode(-this.state.value, "NumberLiteralTypeAnnotation", node); + } + if (this.match(136)) { + return this.parseLiteralAtNode(-this.state.value, "BigIntLiteralTypeAnnotation", node); + } + throw this.raise(FlowErrors.UnexpectedSubtractionOperand, this.state.startLoc); + } + throw this.unexpected(); + case 135: + return this.parseLiteral(this.state.value, "NumberLiteralTypeAnnotation"); + case 136: + 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(129)) { + return this.flowParseInterfaceType(); + } + return this.flowIdentToTypeAnnotation(startLoc, node, this.parseIdentifier()); + } + } + throw this.unexpected(); + } + flowParsePostfixType() { + 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(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.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 === 132 && this.state.value === "_") { + const startLoc = this.state.startLoc; + const node = this.parseIdentifier(); + return this.flowParseGenericType(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(); + return this.finishNode(variance, "Variance"); + } + return variance; + } + parseFunctionBody(node, allowExpressionBody, isMethod = false) { + if (allowExpressionBody) { + 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; + } + return super.parseFunctionBodyAndFinish(node, type, isMethod); + } + parseStatementLike(flags) { + if (this.state.strict && this.isContextual(129)) { + const lookahead = this.lookahead(); + if (tokenIsKeywordOrIdentifier(lookahead.type)) { + const node = this.startNode(); + this.next(); + return this.flowParseInterface(node); + } + } else if (this.isContextual(126)) { + const node = this.startNode(); + this.next(); + return this.flowParseEnumDeclaration(node); + } + const stmt = super.parseStatementLike(flags); + if (this.flowPragma === undefined && !this.isValidDirective(stmt)) { + this.flowPragma = null; + } + return stmt; + } + parseExpressionStatement(node, expr, decorators) { + 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, decorators); + } + shouldParseExportDeclaration() { + const { + type + } = this.state; + if (type === 126 || tokenIsFlowInterfaceOrTypeOrOpaque(type)) { + return !this.state.containsEsc; + } + return super.shouldParseExportDeclaration(); + } + isExportDefaultSpecifier() { + const { + type + } = this.state; + if (type === 126 || tokenIsFlowInterfaceOrTypeOrOpaque(type)) { + return this.state.containsEsc; + } + return super.isExportDefaultSpecifier(); + } + parseExportDefaultExpression() { + if (this.isContextual(126)) { + const node = this.startNode(); + this.next(); + return this.flowParseEnumDeclaration(node); + } + return super.parseExportDefaultExpression(); + } + parseConditional(expr, 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(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, 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" && node.body.type !== "BlockStatement") { + 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(514 | 4); + super.checkParams(node, false, true); + this.scope.exit(); + } + forwardNoArrowParamsConversionAt(node, parse) { + let result; + if (this.state.noArrowParamsConversionAt.includes(this.offsetToSourcePos(node.start))) { + this.state.noArrowParamsConversionAt.push(this.state.start); + result = parse(); + this.state.noArrowParamsConversionAt.pop(); + } else { + result = parse(); + } + return result; + } + parseParenItem(node, startLoc) { + const newNode = super.parseParenItem(node, startLoc); + if (this.eat(17)) { + newNode.optional = true; + this.resetEndLocation(node); + } + if (this.match(14)) { + const typeCastNode = this.startNodeAt(startLoc); + typeCastNode.expression = newNode; + typeCastNode.typeAnnotation = this.flowParseTypeAnnotation(); + return this.finishNode(typeCastNode, "TypeCastExpression"); + } + return newNode; + } + 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); + } + parseExportDeclaration(node) { + if (this.isContextual(130)) { + node.exportKind = "type"; + const declarationNode = this.startNode(); + this.next(); + if (this.match(5)) { + node.specifiers = this.parseExportSpecifiers(true); + super.parseExportFrom(node); + return null; + } else { + return this.flowParseTypeAlias(declarationNode); + } + } else if (this.isContextual(131)) { + node.exportKind = "type"; + const declarationNode = this.startNode(); + this.next(); + return this.flowParseOpaqueType(declarationNode, false); + } else if (this.isContextual(129)) { + node.exportKind = "type"; + const declarationNode = this.startNode(); + this.next(); + return this.flowParseInterface(declarationNode); + } else if (this.isContextual(126)) { + node.exportKind = "value"; + const declarationNode = this.startNode(); + this.next(); + return this.flowParseEnumDeclaration(declarationNode); + } else { + return super.parseExportDeclaration(node); + } + } + eatExportStar(node) { + if (super.eatExportStar(node)) return true; + if (this.isContextual(130) && 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(125)) { + if (super.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, startLoc); + } else if (member.value) { + this.raise(FlowErrors.DeclareClassFieldInitializer, 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(Errors.InvalidIdentifier, this.state.curPosition(), { + identifierName: fullWord + }); + } + this.finishToken(132, fullWord); + } + getTokenFromCode(code) { + const next = this.input.charCodeAt(this.state.pos + 1); + if (code === 123 && next === 124) { + this.finishOp(6, 2); + } else if (this.state.inType && (code === 62 || code === 60)) { + this.finishOp(code === 62 ? 48 : 47, 1); + } else if (this.state.inType && code === 63) { + if (next === 46) { + this.finishOp(18, 2); + } else { + this.finishOp(17, 1); + } + } else if (isIteratorStart(code, next, this.input.charCodeAt(this.state.pos + 2))) { + this.state.pos += 2; + this.readIterator(); + } else { + 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 (!isLHS && node.type === "AssignmentExpression" && node.left.type === "TypeCastExpression") { + node.left = this.typeCastToParameter(node.left); + } + 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); + } + } + 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, expr.typeAnnotation); + } + } + return exprList; + } + parseArrayLike(close, isTuple, refExpressionErrors) { + const node = super.parseArrayLike(close, isTuple, refExpressionErrors); + if (refExpressionErrors != null && !this.state.maybeInArrowParameters) { + this.toReferencedList(node.elements); + } + return node; + } + isValidLVal(type, disallowCallExpression, isParenthesized, binding) { + return type === "TypeCastExpression" || super.isValidLVal(type, disallowCallExpression, isParenthesized, binding); + } + 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, 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, 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) || this.match(51))) { + node.superTypeParameters = this.flowParseTypeParameterInstantiationInExpression(); + } + if (this.isContextual(113)) { + 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, param); + } else if (this.isThisParam(param)) { + this.raise(FlowErrors.SetterMayNotHaveThisParam, param); + } + } + } + parsePropertyNamePrefixOperator(node) { + node.variance = this.flowParseVariance(); + } + parseObjPropValue(prop, 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(); + } + const result = super.parseObjPropValue(prop, startLoc, isGenerator, isAsync, isPattern, isAccessor, refExpressionErrors); + if (typeParameters) { + (result.value || result).typeParameters = typeParameters; + } + return result; + } + parseFunctionParamType(param) { + if (this.eat(17)) { + if (param.type !== "Identifier") { + this.raise(FlowErrors.PatternIsOptional, param); + } + if (this.isThisParam(param)) { + this.raise(FlowErrors.ThisParamMayNotBeOptional, param); + } + param.optional = true; + } + if (this.match(14)) { + param.typeAnnotation = this.flowParseTypeAnnotation(); + } else if (this.isThisParam(param)) { + this.raise(FlowErrors.ThisParamAnnotationRequired, param); + } + if (this.match(29) && this.isThisParam(param)) { + this.raise(FlowErrors.ThisParamNoDefault, param); + } + this.resetEndLocation(param); + return param; + } + parseMaybeDefault(startLoc, left) { + const node = super.parseMaybeDefault(startLoc, left); + if (node.type === "AssignmentPattern" && node.typeAnnotation && node.right.start < node.typeAnnotation.start) { + this.raise(FlowErrors.TypeBeforeInitializer, node.typeAnnotation); + } + return node; + } + checkImportReflection(node) { + super.checkImportReflection(node); + if (node.module && node.importKind !== "value") { + this.raise(FlowErrors.ImportReflectionHasImportType, node.specifiers[0].loc.start); + } + } + parseImportSpecifierLocal(node, specifier, type) { + specifier.local = hasTypeImportKind(node) ? this.flowParseRestrictedIdentifier(true, true) : this.parseIdentifier(); + node.specifiers.push(this.finishImportSpecifier(specifier, type)); + } + isPotentialImportPhase(isExport) { + if (super.isPotentialImportPhase(isExport)) return true; + if (this.isContextual(130)) { + if (!isExport) return true; + const ch = this.lookaheadCharCode(); + return ch === 123 || ch === 42; + } + return !isExport && this.isContextual(87); + } + applyImportPhase(node, isExport, phase, loc) { + super.applyImportPhase(node, isExport, phase, loc); + if (isExport) { + if (!phase && this.match(65)) { + return; + } + node.exportKind = phase === "type" ? phase : "value"; + } else { + if (phase === "type" && this.match(55)) this.unexpected(); + node.importKind = phase === "type" || phase === "typeof" ? phase : "value"; + } + } + parseImportSpecifier(specifier, importedIsString, isInTypeOnlyImport, isMaybeTypeOnly, bindingType) { + 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 = this.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(Errors.ImportBindingIsString, specifier, { + importName: firstIdent.value + }); + } + specifier.imported = firstIdent; + specifier.importKind = null; + } + if (this.eatContextual(93)) { + specifier.local = this.parseIdentifier(); + } else { + isBinding = true; + specifier.local = this.cloneIdentifier(specifier.imported); + } + } + const specifierIsTypeImport = hasTypeImportKind(specifier); + if (isInTypeOnlyImport && specifierIsTypeImport) { + this.raise(FlowErrors.ImportTypeShorthandOnlyInPureImport, 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); + } + return this.finishImportSpecifier(specifier, "ImportSpecifier"); + } + parseBindingAtom() { + switch (this.state.type) { + case 78: + return this.parseIdentifier(true); + default: + return super.parseBindingAtom(); + } + } + parseFunctionParams(node, isConstructor) { + const kind = node.kind; + if (kind !== "get" && kind !== "set" && this.match(47)) { + node.typeParameters = this.flowParseTypeParameterDeclaration(); + } + super.parseFunctionParams(node, isConstructor); + } + 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(143) || 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, 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, 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.includes(this.offsetToSourcePos(node.start))) { + node.params = params; + } else { + super.setArrowFunctionParameters(node, params); + } + } + checkParams(node, allowDuplicates, isArrowFunction, strictModeChanged = true) { + if (isArrowFunction && this.state.noArrowParamsConversionAt.includes(this.offsetToSourcePos(node.start))) { + return; + } + for (let i = 0; i < node.params.length; i++) { + if (this.isThisParam(node.params[i]) && i > 0) { + this.raise(FlowErrors.ThisParamMustBeFirst, node.params[i]); + } + } + super.checkParams(node, allowDuplicates, isArrowFunction, strictModeChanged); + } + parseParenAndDistinguishExpression(canBeArrow) { + return super.parseParenAndDistinguishExpression(canBeArrow && !this.state.noArrowAt.includes(this.sourceToOffsetPos(this.state.start))); + } + parseSubscripts(base, startLoc, noCalls) { + if (base.type === "Identifier" && base.name === "async" && this.state.noArrowAt.includes(startLoc.index)) { + this.next(); + const node = this.startNodeAt(startLoc); + node.callee = base; + node.arguments = super.parseCallExpressionArguments(); + 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(startLoc) || abort(), state); + if (!arrow.error && !arrow.aborted) return arrow.node; + const result = this.tryParse(() => super.parseSubscripts(base, 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, startLoc, noCalls); + } + parseSubscript(base, 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(startLoc); + node.callee = base; + node.typeArguments = this.flowParseTypeParameterInstantiationInExpression(); + this.expect(10); + node.arguments = this.parseCallExpressionArguments(); + node.optional = true; + return this.finishCallExpression(node, true); + } else if (!noCalls && this.shouldParseTypes() && (this.match(47) || this.match(51))) { + const node = this.startNodeAt(startLoc); + node.callee = base; + const result = this.tryParse(() => { + node.typeArguments = this.flowParseTypeParameterInstantiationCallOrNew(); + this.expect(10); + node.arguments = super.parseCallExpressionArguments(); + 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, startLoc, noCalls, subscriptState); + } + parseNewCallee(node) { + super.parseNewCallee(node); + let targs = null; + if (this.shouldParseTypes() && this.match(47)) { + targs = this.tryParse(() => this.flowParseTypeParameterInstantiationCallOrNew()).node; + } + node.typeArguments = targs; + } + parseAsyncArrowWithTypeParameters(startLoc) { + const node = this.startNodeAt(startLoc); + this.parseFunctionParams(node, false); + if (!this.parseArrow(node)) return; + return super.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, this.state.curPosition()); + } + return fileNode; + } + skipBlockComment() { + if (this.hasPlugin("flowComments") && this.skipFlowComment()) { + if (this.state.hasFlowComment) { + throw this.raise(FlowErrors.NestedFlowComment, this.state.startLoc); + } + this.hasFlowCommentCompletion(); + const commentSkip = this.skipFlowComment(); + if (commentSkip) { + this.state.pos += commentSkip; + this.state.hasFlowComment = true; + } + return; + } + return super.skipBlockComment(this.state.hasFlowComment ? "*-/" : "*/"); + } + 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(Errors.UnterminatedComment, this.state.curPosition()); + } + } + flowEnumErrorBooleanMemberNotInitialized(loc, { + enumName, + memberName + }) { + this.raise(FlowErrors.EnumBooleanMemberNotInitialized, loc, { + memberName, + enumName + }); + } + flowEnumErrorInvalidMemberInitializer(loc, enumContext) { + return this.raise(!enumContext.explicitType ? FlowErrors.EnumInvalidMemberInitializerUnknownType : enumContext.explicitType === "symbol" ? FlowErrors.EnumInvalidMemberInitializerSymbolType : FlowErrors.EnumInvalidMemberInitializerPrimaryType, loc, enumContext); + } + flowEnumErrorNumberMemberNotInitialized(loc, details) { + this.raise(FlowErrors.EnumNumberMemberNotInitialized, loc, details); + } + flowEnumErrorStringMemberInconsistentlyInitialized(node, details) { + this.raise(FlowErrors.EnumStringMemberInconsistentlyInitialized, node, details); + } + flowEnumMemberInit() { + const startLoc = this.state.startLoc; + const endOfInit = () => this.match(12) || this.match(8); + switch (this.state.type) { + case 135: + { + const literal = this.parseNumericLiteral(this.state.value); + if (endOfInit()) { + return { + type: "number", + loc: literal.loc.start, + value: literal + }; + } + return { + type: "invalid", + loc: startLoc + }; + } + case 134: + { + 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, id, { + memberName, + suggestion: memberName[0].toUpperCase() + memberName.slice(1), + enumName + }); + } + if (seenNames.has(memberName)) { + this.raise(FlowErrors.EnumDuplicateMemberName, 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.flowEnumErrorStringMemberInconsistentlyInitialized(member, { + enumName + }); + } + return defaultedMembers; + } else { + for (const member of defaultedMembers) { + this.flowEnumErrorStringMemberInconsistentlyInitialized(member, { + enumName + }); + } + return initializedMembers; + } + } + flowEnumParseExplicitType({ + enumName + }) { + if (!this.eatContextual(102)) return null; + if (!tokenIsIdentifier(this.state.type)) { + throw this.raise(FlowErrors.EnumInvalidExplicitTypeUnknownSupplied, this.state.startLoc, { + enumName + }); + } + const { + value + } = this.state; + this.next(); + if (value !== "boolean" && value !== "number" && value !== "string" && value !== "symbol") { + this.raise(FlowErrors.EnumInvalidExplicitType, this.state.startLoc, { + enumName, + invalidEnumType: value + }); + } + return value; + } + 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, 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"); + } + jsxParseOpeningElementAfterName(node) { + if (this.shouldParseTypes()) { + if (this.match(47) || this.match(51)) { + node.typeArguments = this.flowParseTypeParameterInstantiationInExpression(); + } + } + return super.jsxParseOpeningElementAfterName(node); + } + 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; + } + 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; + } + maybeUnwrapTypeCastExpression(node) { + return node.type === "TypeCastExpression" ? node.expression : node; + } +}; +const entities = { + __proto__: null, + 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 lineBreak = /\r\n|[\r\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; + } +} +function hasNewLine(input, start, end) { + for (let i = start; i < end; i++) { + if (isNewLine(input.charCodeAt(i))) { + return true; + } + } + return false; +} +const skipWhiteSpace = /(?:\s|\/\/.*|\/\*[^]*?\*\/)*/g; +const skipWhiteSpaceInLine = /(?:[^\S\n\r\u2028\u2029]|\/\/.*|\/\*.*?\*\/)*/g; +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; + } +} +const JsxErrors = ParseErrorEnum`jsx`({ + AttributeIsEmpty: "JSX attributes must only be assigned a non-empty expression.", + MissingClosingTagElement: ({ + openingTagName + }) => `Expected corresponding JSX closing tag for <${openingTagName}>.`, + MissingClosingTagFragment: "Expected corresponding JSX closing tag for <>.", + UnexpectedSequenceExpression: "Sequence expressions cannot be directly nested inside JSX. Did you mean to wrap it in parentheses (...)?", + UnexpectedToken: ({ + unexpected, + HTMLEntity + }) => `Unexpected token \`${unexpected}\`. Did you mean \`${HTMLEntity}\` or \`{'${unexpected}'}\`?`, + 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 <>...?" +}); +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 JSXParserMixin extends superClass { + jsxReadToken() { + let out = ""; + let chunkStart = this.state.pos; + for (;;) { + if (this.state.pos >= this.length) { + throw this.raise(JsxErrors.UnterminatedJsxContent, 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; + this.finishToken(143); + } else { + super.getTokenFromCode(ch); + } + return; + } + out += this.input.slice(chunkStart, this.state.pos); + this.finishToken(142, out); + return; + 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(Errors.UnterminatedString, 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++); + this.finishToken(134, out); + } + jsxReadEntity() { + const startPos = ++this.state.pos; + if (this.codePointAtPos(this.state.pos) === 35) { + ++this.state.pos; + let radix = 10; + if (this.codePointAtPos(this.state.pos) === 120) { + radix = 16; + ++this.state.pos; + } + const codePoint = this.readInt(radix, undefined, false, "bail"); + if (codePoint !== null && this.codePointAtPos(this.state.pos) === 59) { + ++this.state.pos; + return String.fromCodePoint(codePoint); + } + } else { + let count = 0; + let semi = false; + while (count++ < 10 && this.state.pos < this.length && !(semi = this.codePointAtPos(this.state.pos) === 59)) { + ++this.state.pos; + } + if (semi) { + const desc = this.input.slice(startPos, this.state.pos); + const entity = entities[desc]; + ++this.state.pos; + if (entity) { + return entity; + } + } + } + this.state.pos = startPos; + return "&"; + } + jsxReadWord() { + let ch; + const start = this.state.pos; + do { + ch = this.input.charCodeAt(++this.state.pos); + } while (isIdentifierChar(ch) || ch === 45); + this.finishToken(141, this.input.slice(start, this.state.pos)); + } + jsxParseIdentifier() { + const node = this.startNode(); + if (this.match(141)) { + 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 startLoc = this.state.startLoc; + const name = this.jsxParseIdentifier(); + if (!this.eat(14)) return name; + const node = this.startNodeAt(startLoc); + node.namespace = name; + node.name = this.jsxParseIdentifier(); + return this.finishNode(node, "JSXNamespacedName"); + } + jsxParseElementName() { + const startLoc = this.state.startLoc; + let node = this.jsxParseNamespacedName(); + if (node.type === "JSXNamespacedName") { + return node; + } + while (this.eat(16)) { + const newNode = this.startNodeAt(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 143: + case 134: + return this.parseExprAtom(); + default: + throw this.raise(JsxErrors.UnsupportedJsxValue, this.state.startLoc); + } + } + jsxParseEmptyExpression() { + const node = this.startNodeAt(this.state.lastTokEndLoc); + return this.finishNodeAt(node, "JSXEmptyExpression", this.state.startLoc); + } + jsxParseSpreadChild(node) { + this.next(); + node.expression = this.parseExpression(); + this.setContext(types.j_expr); + this.state.canStartJSXElement = true; + 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.state.canStartJSXElement = true; + 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.state.canStartJSXElement = true; + 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(startLoc) { + const node = this.startNodeAt(startLoc); + if (this.eat(144)) { + return this.finishNode(node, "JSXOpeningFragment"); + } + node.name = this.jsxParseElementName(); + return this.jsxParseOpeningElementAfterName(node); + } + jsxParseOpeningElementAfterName(node) { + const attributes = []; + while (!this.match(56) && !this.match(144)) { + attributes.push(this.jsxParseAttribute()); + } + node.attributes = attributes; + node.selfClosing = this.eat(56); + this.expect(144); + return this.finishNode(node, "JSXOpeningElement"); + } + jsxParseClosingElementAt(startLoc) { + const node = this.startNodeAt(startLoc); + if (this.eat(144)) { + return this.finishNode(node, "JSXClosingFragment"); + } + node.name = this.jsxParseElementName(); + this.expect(144); + return this.finishNode(node, "JSXClosingElement"); + } + jsxParseElementAt(startLoc) { + const node = this.startNodeAt(startLoc); + const children = []; + const openingElement = this.jsxParseOpeningElementAt(startLoc); + let closingElement = null; + if (!openingElement.selfClosing) { + contents: for (;;) { + switch (this.state.type) { + case 143: + startLoc = this.state.startLoc; + this.next(); + if (this.eat(56)) { + closingElement = this.jsxParseClosingElementAt(startLoc); + break contents; + } + children.push(this.jsxParseElementAt(startLoc)); + break; + case 142: + children.push(this.parseLiteral(this.state.value, "JSXText")); + 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: + this.unexpected(); + } + } + if (isFragment(openingElement) && !isFragment(closingElement) && closingElement !== null) { + this.raise(JsxErrors.MissingClosingTagFragment, closingElement); + } else if (!isFragment(openingElement) && isFragment(closingElement)) { + this.raise(JsxErrors.MissingClosingTagElement, closingElement, { + openingTagName: getQualifiedJSXName(openingElement.name) + }); + } else if (!isFragment(openingElement) && !isFragment(closingElement)) { + if (getQualifiedJSXName(closingElement.name) !== getQualifiedJSXName(openingElement.name)) { + this.raise(JsxErrors.MissingClosingTagElement, closingElement, { + openingTagName: 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, this.state.startLoc); + } + return isFragment(openingElement) ? this.finishNode(node, "JSXFragment") : this.finishNode(node, "JSXElement"); + } + jsxParseElement() { + const startLoc = this.state.startLoc; + this.next(); + return this.jsxParseElementAt(startLoc); + } + setContext(newContext) { + const { + context + } = this.state; + context[context.length - 1] = newContext; + } + parseExprAtom(refExpressionErrors) { + if (this.match(143)) { + return this.jsxParseElement(); + } else if (this.match(47) && this.input.charCodeAt(this.state.pos) !== 33) { + this.replaceToken(143); + 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) { + this.jsxReadToken(); + return; + } + if (context === types.j_oTag || context === types.j_cTag) { + if (isIdentifierStart(code)) { + this.jsxReadWord(); + return; + } + if (code === 62) { + ++this.state.pos; + this.finishToken(144); + return; + } + if ((code === 34 || code === 39) && context === types.j_oTag) { + this.jsxReadString(code); + return; + } + } + if (code === 60 && this.state.canStartJSXElement && this.input.charCodeAt(this.state.pos + 1) !== 33) { + ++this.state.pos; + this.finishToken(143); + return; + } + super.getTokenFromCode(code); + } + updateContext(prevType) { + const { + context, + type + } = this.state; + if (type === 56 && prevType === 143) { + context.splice(-2, 2, types.j_cTag); + this.state.canStartJSXElement = false; + } else if (type === 143) { + context.push(types.j_oTag); + } else if (type === 144) { + 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.tsNames = new Map(); + } +} +class TypeScriptScopeHandler extends ScopeHandler { + constructor(...args) { + super(...args); + this.importsStack = []; + } + createScope(flags) { + this.importsStack.push(new Set()); + return new TypeScriptScope(flags); + } + enter(flags) { + if (flags === 1024) { + this.importsStack.push(new Set()); + } + super.enter(flags); + } + exit() { + const flags = super.exit(); + if (flags === 1024) { + this.importsStack.pop(); + } + return flags; + } + hasImport(name, allowShadow) { + const len = this.importsStack.length; + if (this.importsStack[len - 1].has(name)) { + return true; + } + if (!allowShadow && len > 1) { + for (let i = 0; i < len - 1; i++) { + if (this.importsStack[i].has(name)) return true; + } + } + return false; + } + declareName(name, bindingType, loc) { + if (bindingType & 4096) { + if (this.hasImport(name, true)) { + this.parser.raise(Errors.VarRedeclaration, loc, { + identifierName: name + }); + } + this.importsStack[this.importsStack.length - 1].add(name); + return; + } + const scope = this.currentScope(); + let type = scope.tsNames.get(name) || 0; + if (bindingType & 1024) { + this.maybeExportDefined(scope, name); + scope.tsNames.set(name, type | 16); + return; + } + super.declareName(name, bindingType, loc); + if (bindingType & 2) { + if (!(bindingType & 1)) { + this.checkRedeclarationInScope(scope, name, bindingType, loc); + this.maybeExportDefined(scope, name); + } + type = type | 1; + } + if (bindingType & 256) { + type = type | 2; + } + if (bindingType & 512) { + type = type | 4; + } + if (bindingType & 128) { + type = type | 8; + } + if (type) scope.tsNames.set(name, type); + } + isRedeclaredInScope(scope, name, bindingType) { + const type = scope.tsNames.get(name); + if ((type & 2) > 0) { + if (bindingType & 256) { + const isConst = !!(bindingType & 512); + const wasConst = (type & 4) > 0; + return isConst !== wasConst; + } + return true; + } + if (bindingType & 128 && (type & 8) > 0) { + if (scope.names.get(name) & 2) { + return !!(bindingType & 1); + } else { + return false; + } + } + if (bindingType & 2 && (type & 1) > 0) { + return true; + } + return super.isRedeclaredInScope(scope, name, bindingType); + } + checkLocalExport(id) { + const { + name + } = id; + if (this.hasImport(name)) return; + const len = this.scopeStack.length; + for (let i = len - 1; i >= 0; i--) { + const scope = this.scopeStack[i]; + const type = scope.tsNames.get(name); + if ((type & 1) > 0 || (type & 16) > 0) { + return; + } + } + super.checkLocalExport(id); + } +} +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() & 2) > 0; + } + get hasYield() { + return (this.currentFlags() & 1) > 0; + } + get hasReturn() { + return (this.currentFlags() & 4) > 0; + } + get hasIn() { + return (this.currentFlags() & 8) > 0; + } +} +function functionFlags(isAsync, isGenerator) { + return (isAsync ? 2 : 0) | (isGenerator ? 1 : 0); +} +class BaseParser { + constructor() { + this.sawUnambiguousESM = false; + this.ambiguousScriptDifferentAst = false; + } + sourceToOffsetPos(sourcePos) { + return sourcePos + this.startIndex; + } + offsetToSourcePos(offsetPos) { + return offsetPos - this.startIndex; + } + 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; + const { + commentsLen + } = this.state; + if (this.comments.length !== commentsLen) { + this.comments.length = commentsLen; + } + this.comments.push(comment); + this.state.commentsLen++; + } + 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) { + var _node$options; + 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 node = commentWS.containingNode; + const commentStart = commentWS.start; + if (this.input.charCodeAt(this.offsetToSourcePos(commentStart) - 1) === 44) { + switch (node.type) { + case "ObjectExpression": + case "ObjectPattern": + adjustInnerComments(node, node.properties, commentWS); + break; + case "CallExpression": + case "OptionalCallExpression": + adjustInnerComments(node, node.arguments, commentWS); + break; + case "ImportExpression": + adjustInnerComments(node, [node.source, (_node$options = node.options) != null ? _node$options : null], commentWS); + break; + case "FunctionDeclaration": + case "FunctionExpression": + case "ArrowFunctionExpression": + case "ObjectMethod": + case "ClassMethod": + case "ClassPrivateMethod": + adjustInnerComments(node, node.params, commentWS); + break; + case "ArrayExpression": + case "ArrayPattern": + adjustInnerComments(node, node.elements, commentWS); + break; + case "ExportNamedDeclaration": + case "ImportDeclaration": + adjustInnerComments(node, node.specifiers, commentWS); + break; + case "TSEnumDeclaration": + adjustInnerComments(node, node.members, commentWS); + break; + case "TSEnumBody": + adjustInnerComments(node, node.members, commentWS); + break; + default: + { + if (node.type === "RecordExpression") { + adjustInnerComments(node, node.properties, commentWS); + break; + } + if (node.type === "TupleExpression") { + adjustInnerComments(node, node.elements, commentWS); + break; + } + 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; + } + } + } +} +class State { + constructor() { + this.flags = 1024; + this.startIndex = 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.topicContext = { + maxNumOfResolvableTopics: 0, + maxTopicIndex: null + }; + this.labels = []; + this.commentsLen = 0; + this.commentStack = []; + this.pos = 0; + this.type = 140; + this.value = null; + this.start = 0; + this.end = 0; + this.lastTokEndLoc = null; + this.lastTokStartLoc = null; + this.context = [types.brace]; + this.firstInvalidTemplateEscapePos = null; + this.strictErrors = new Map(); + this.tokensLength = 0; + } + get strict() { + return (this.flags & 1) > 0; + } + set strict(v) { + if (v) this.flags |= 1;else this.flags &= -2; + } + init({ + strictMode, + sourceType, + startIndex, + startLine, + startColumn + }) { + this.strict = strictMode === false ? false : strictMode === true ? true : sourceType === "module"; + this.startIndex = startIndex; + this.curLine = startLine; + this.lineStart = -startColumn; + this.startLoc = this.endLoc = new Position(startLine, startColumn, startIndex); + } + get maybeInArrowParameters() { + return (this.flags & 2) > 0; + } + set maybeInArrowParameters(v) { + if (v) this.flags |= 2;else this.flags &= -3; + } + get inType() { + return (this.flags & 4) > 0; + } + set inType(v) { + if (v) this.flags |= 4;else this.flags &= -5; + } + get noAnonFunctionType() { + return (this.flags & 8) > 0; + } + set noAnonFunctionType(v) { + if (v) this.flags |= 8;else this.flags &= -9; + } + get hasFlowComment() { + return (this.flags & 16) > 0; + } + set hasFlowComment(v) { + if (v) this.flags |= 16;else this.flags &= -17; + } + get isAmbientContext() { + return (this.flags & 32) > 0; + } + set isAmbientContext(v) { + if (v) this.flags |= 32;else this.flags &= -33; + } + get inAbstractClass() { + return (this.flags & 64) > 0; + } + set inAbstractClass(v) { + if (v) this.flags |= 64;else this.flags &= -65; + } + get inDisallowConditionalTypesContext() { + return (this.flags & 128) > 0; + } + set inDisallowConditionalTypesContext(v) { + if (v) this.flags |= 128;else this.flags &= -129; + } + get soloAwait() { + return (this.flags & 256) > 0; + } + set soloAwait(v) { + if (v) this.flags |= 256;else this.flags &= -257; + } + get inFSharpPipelineDirectBody() { + return (this.flags & 512) > 0; + } + set inFSharpPipelineDirectBody(v) { + if (v) this.flags |= 512;else this.flags &= -513; + } + get canStartJSXElement() { + return (this.flags & 1024) > 0; + } + set canStartJSXElement(v) { + if (v) this.flags |= 1024;else this.flags &= -1025; + } + get containsEsc() { + return (this.flags & 2048) > 0; + } + set containsEsc(v) { + if (v) this.flags |= 2048;else this.flags &= -2049; + } + get hasTopLevelAwait() { + return (this.flags & 4096) > 0; + } + set hasTopLevelAwait(v) { + if (v) this.flags |= 4096;else this.flags &= -4097; + } + curPosition() { + return new Position(this.curLine, this.pos - this.lineStart, this.pos + this.startIndex); + } + clone() { + const state = new State(); + state.flags = this.flags; + state.startIndex = this.startIndex; + state.curLine = this.curLine; + state.lineStart = this.lineStart; + state.startLoc = this.startLoc; + state.endLoc = this.endLoc; + state.errors = this.errors.slice(); + state.potentialArrowAt = this.potentialArrowAt; + state.noArrowAt = this.noArrowAt.slice(); + state.noArrowParamsConversionAt = this.noArrowParamsConversionAt.slice(); + state.topicContext = this.topicContext; + state.labels = this.labels.slice(); + state.commentsLen = this.commentsLen; + state.commentStack = this.commentStack.slice(); + state.pos = this.pos; + state.type = this.type; + state.value = this.value; + state.start = this.start; + state.end = this.end; + state.lastTokEndLoc = this.lastTokEndLoc; + state.lastTokStartLoc = this.lastTokStartLoc; + state.context = this.context.slice(); + state.firstInvalidTemplateEscapePos = this.firstInvalidTemplateEscapePos; + state.strictErrors = this.strictErrors; + state.tokensLength = this.tokensLength; + return state; + } +} +var _isDigit = function isDigit(code) { + return code >= 48 && code <= 57; +}; +const forbiddenNumericSeparatorSiblings = { + decBinOct: new Set([46, 66, 69, 79, 95, 98, 101, 111]), + hex: new Set([46, 88, 95, 120]) +}; +const isAllowedNumericSeparatorSibling = { + bin: ch => ch === 48 || ch === 49, + oct: ch => ch >= 48 && ch <= 55, + dec: ch => ch >= 48 && ch <= 57, + hex: ch => ch >= 48 && ch <= 57 || ch >= 65 && ch <= 70 || ch >= 97 && ch <= 102 +}; +function readStringContents(type, input, pos, lineStart, curLine, errors) { + const initialPos = pos; + const initialLineStart = lineStart; + const initialCurLine = curLine; + let out = ""; + let firstInvalidLoc = null; + let chunkStart = pos; + const { + length + } = input; + for (;;) { + if (pos >= length) { + errors.unterminated(initialPos, initialLineStart, initialCurLine); + out += input.slice(chunkStart, pos); + break; + } + const ch = input.charCodeAt(pos); + if (isStringEnd(type, ch, input, pos)) { + out += input.slice(chunkStart, pos); + break; + } + if (ch === 92) { + out += input.slice(chunkStart, pos); + const res = readEscapedChar(input, pos, lineStart, curLine, type === "template", errors); + if (res.ch === null && !firstInvalidLoc) { + firstInvalidLoc = { + pos, + lineStart, + curLine + }; + } else { + out += res.ch; + } + ({ + pos, + lineStart, + curLine + } = res); + chunkStart = pos; + } else if (ch === 8232 || ch === 8233) { + ++pos; + ++curLine; + lineStart = pos; + } else if (ch === 10 || ch === 13) { + if (type === "template") { + out += input.slice(chunkStart, pos) + "\n"; + ++pos; + if (ch === 13 && input.charCodeAt(pos) === 10) { + ++pos; + } + ++curLine; + chunkStart = lineStart = pos; + } else { + errors.unterminated(initialPos, initialLineStart, initialCurLine); + } + } else { + ++pos; + } + } + return { + pos, + str: out, + firstInvalidLoc, + lineStart, + curLine, + containsInvalid: !!firstInvalidLoc + }; +} +function isStringEnd(type, ch, input, pos) { + if (type === "template") { + return ch === 96 || ch === 36 && input.charCodeAt(pos + 1) === 123; + } + return ch === (type === "double" ? 34 : 39); +} +function readEscapedChar(input, pos, lineStart, curLine, inTemplate, errors) { + const throwOnInvalid = !inTemplate; + pos++; + const res = ch => ({ + pos, + ch, + lineStart, + curLine + }); + const ch = input.charCodeAt(pos++); + switch (ch) { + case 110: + return res("\n"); + case 114: + return res("\r"); + case 120: + { + let code; + ({ + code, + pos + } = readHexChar(input, pos, lineStart, curLine, 2, false, throwOnInvalid, errors)); + return res(code === null ? null : String.fromCharCode(code)); + } + case 117: + { + let code; + ({ + code, + pos + } = readCodePoint(input, pos, lineStart, curLine, throwOnInvalid, errors)); + return res(code === null ? null : String.fromCodePoint(code)); + } + case 116: + return res("\t"); + case 98: + return res("\b"); + case 118: + return res("\u000b"); + case 102: + return res("\f"); + case 13: + if (input.charCodeAt(pos) === 10) { + ++pos; + } + case 10: + lineStart = pos; + ++curLine; + case 8232: + case 8233: + return res(""); + case 56: + case 57: + if (inTemplate) { + return res(null); + } else { + errors.strictNumericEscape(pos - 1, lineStart, curLine); + } + default: + if (ch >= 48 && ch <= 55) { + const startPos = pos - 1; + const match = /^[0-7]+/.exec(input.slice(startPos, pos + 2)); + let octalStr = match[0]; + let octal = parseInt(octalStr, 8); + if (octal > 255) { + octalStr = octalStr.slice(0, -1); + octal = parseInt(octalStr, 8); + } + pos += octalStr.length - 1; + const next = input.charCodeAt(pos); + if (octalStr !== "0" || next === 56 || next === 57) { + if (inTemplate) { + return res(null); + } else { + errors.strictNumericEscape(startPos, lineStart, curLine); + } + } + return res(String.fromCharCode(octal)); + } + return res(String.fromCharCode(ch)); + } +} +function readHexChar(input, pos, lineStart, curLine, len, forceLen, throwOnInvalid, errors) { + const initialPos = pos; + let n; + ({ + n, + pos + } = readInt(input, pos, lineStart, curLine, 16, len, forceLen, false, errors, !throwOnInvalid)); + if (n === null) { + if (throwOnInvalid) { + errors.invalidEscapeSequence(initialPos, lineStart, curLine); + } else { + pos = initialPos - 1; + } + } + return { + code: n, + pos + }; +} +function readInt(input, pos, lineStart, curLine, radix, len, forceLen, allowNumSeparator, errors, bailOnError) { + const start = pos; + const forbiddenSiblings = radix === 16 ? forbiddenNumericSeparatorSiblings.hex : forbiddenNumericSeparatorSiblings.decBinOct; + const isAllowedSibling = radix === 16 ? isAllowedNumericSeparatorSibling.hex : radix === 10 ? isAllowedNumericSeparatorSibling.dec : radix === 8 ? isAllowedNumericSeparatorSibling.oct : isAllowedNumericSeparatorSibling.bin; + let invalid = false; + let total = 0; + for (let i = 0, e = len == null ? Infinity : len; i < e; ++i) { + const code = input.charCodeAt(pos); + let val; + if (code === 95 && allowNumSeparator !== "bail") { + const prev = input.charCodeAt(pos - 1); + const next = input.charCodeAt(pos + 1); + if (!allowNumSeparator) { + if (bailOnError) return { + n: null, + pos + }; + errors.numericSeparatorInEscapeSequence(pos, lineStart, curLine); + } else if (Number.isNaN(next) || !isAllowedSibling(next) || forbiddenSiblings.has(prev) || forbiddenSiblings.has(next)) { + if (bailOnError) return { + n: null, + pos + }; + errors.unexpectedNumericSeparator(pos, lineStart, curLine); + } + ++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 (val <= 9 && bailOnError) { + return { + n: null, + pos + }; + } else if (val <= 9 && errors.invalidDigit(pos, lineStart, curLine, radix)) { + val = 0; + } else if (forceLen) { + val = 0; + invalid = true; + } else { + break; + } + } + ++pos; + total = total * radix + val; + } + if (pos === start || len != null && pos - start !== len || invalid) { + return { + n: null, + pos + }; + } + return { + n: total, + pos + }; +} +function readCodePoint(input, pos, lineStart, curLine, throwOnInvalid, errors) { + const ch = input.charCodeAt(pos); + let code; + if (ch === 123) { + ++pos; + ({ + code, + pos + } = readHexChar(input, pos, lineStart, curLine, input.indexOf("}", pos) - pos, true, throwOnInvalid, errors)); + ++pos; + if (code !== null && code > 0x10ffff) { + if (throwOnInvalid) { + errors.invalidCodePoint(pos, lineStart, curLine); + } else { + return { + code: null, + pos + }; + } + } + } else { + ({ + code, + pos + } = readHexChar(input, pos, lineStart, curLine, 4, false, throwOnInvalid, errors)); + } + return { + code, + pos + }; +} +function buildPosition(pos, lineStart, curLine) { + return new Position(curLine, pos - lineStart, pos); +} +const VALID_REGEX_FLAGS = new Set([103, 109, 115, 105, 121, 117, 100, 118]); +class Token { + constructor(state) { + const startIndex = state.startIndex || 0; + this.type = state.type; + this.value = state.value; + this.start = startIndex + state.start; + this.end = startIndex + state.end; + this.loc = new SourceLocation(state.startLoc, state.endLoc); + } +} +class Tokenizer extends CommentsParser { + constructor(options, input) { + super(); + this.isLookahead = void 0; + this.tokens = []; + this.errorHandlers_readInt = { + invalidDigit: (pos, lineStart, curLine, radix) => { + if (!(this.optionFlags & 2048)) return false; + this.raise(Errors.InvalidDigit, buildPosition(pos, lineStart, curLine), { + radix + }); + return true; + }, + numericSeparatorInEscapeSequence: this.errorBuilder(Errors.NumericSeparatorInEscapeSequence), + unexpectedNumericSeparator: this.errorBuilder(Errors.UnexpectedNumericSeparator) + }; + this.errorHandlers_readCodePoint = Object.assign({}, this.errorHandlers_readInt, { + invalidEscapeSequence: this.errorBuilder(Errors.InvalidEscapeSequence), + invalidCodePoint: this.errorBuilder(Errors.InvalidCodePoint) + }); + this.errorHandlers_readStringContents_string = Object.assign({}, this.errorHandlers_readCodePoint, { + strictNumericEscape: (pos, lineStart, curLine) => { + this.recordStrictModeErrors(Errors.StrictNumericEscape, buildPosition(pos, lineStart, curLine)); + }, + unterminated: (pos, lineStart, curLine) => { + throw this.raise(Errors.UnterminatedString, buildPosition(pos - 1, lineStart, curLine)); + } + }); + this.errorHandlers_readStringContents_template = Object.assign({}, this.errorHandlers_readCodePoint, { + strictNumericEscape: this.errorBuilder(Errors.StrictNumericEscape), + unterminated: (pos, lineStart, curLine) => { + throw this.raise(Errors.UnterminatedTemplate, buildPosition(pos, lineStart, curLine)); + } + }); + this.state = new State(); + this.state.init(options); + this.input = input; + this.length = input.length; + this.comments = []; + this.isLookahead = false; + } + pushToken(token) { + this.tokens.length = this.state.tokensLength; + this.tokens.push(token); + ++this.state.tokensLength; + } + next() { + this.checkKeywordEscapes(); + if (this.optionFlags & 256) { + this.pushToken(new Token(this.state)); + } + 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.lookaheadCharCodeSince(this.state.pos); + } + lookaheadCharCodeSince(pos) { + return this.input.charCodeAt(this.nextTokenStartSince(pos)); + } + nextTokenInLineStart() { + return this.nextTokenInLineStartSince(this.state.pos); + } + nextTokenInLineStartSince(pos) { + skipWhiteSpaceInLine.lastIndex = pos; + return skipWhiteSpaceInLine.test(this.input) ? skipWhiteSpaceInLine.lastIndex : pos; + } + lookaheadInLineCharCode() { + return this.input.charCodeAt(this.nextTokenInLineStart()); + } + 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(([toParseError, at]) => this.raise(toParseError, at)); + 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(140); + return; + } + this.getTokenFromCode(this.codePointAtPos(this.state.pos)); + } + skipBlockComment(commentEnd) { + let startLoc; + if (!this.isLookahead) startLoc = this.state.curPosition(); + const start = this.state.pos; + const end = this.input.indexOf(commentEnd, start + 2); + if (end === -1) { + throw this.raise(Errors.UnterminatedComment, this.state.curPosition()); + } + this.state.pos = end + commentEnd.length; + 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: this.sourceToOffsetPos(start), + end: this.sourceToOffsetPos(end + commentEnd.length), + loc: new SourceLocation(startLoc, this.state.curPosition()) + }; + if (this.optionFlags & 256) 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: this.sourceToOffsetPos(start), + end: this.sourceToOffsetPos(end), + loc: new SourceLocation(startLoc, this.state.curPosition()) + }; + if (this.optionFlags & 256) this.pushToken(comment); + return comment; + } + skipSpace() { + const spaceStart = this.state.pos; + const comments = this.optionFlags & 4096 ? [] : null; + 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); + comments == null || comments.push(comment); + } + break; + } + case 47: + { + const comment = this.skipLineComment(2); + if (comment !== undefined) { + this.addComment(comment); + comments == null || comments.push(comment); + } + break; + } + default: + break loop; + } + break; + default: + if (isWhitespace(ch)) { + ++this.state.pos; + } else if (ch === 45 && !this.inModule && this.optionFlags & 8192) { + 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); + comments == null || comments.push(comment); + } + } else { + break loop; + } + } else if (ch === 60 && !this.inModule && this.optionFlags & 8192) { + 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); + comments == null || comments.push(comment); + } + } else { + break loop; + } + } else { + break loop; + } + } + } + if ((comments == null ? void 0 : comments.length) > 0) { + const end = this.state.pos; + const commentWhitespace = { + start: this.sourceToOffsetPos(spaceStart), + end: this.sourceToOffsetPos(end), + comments: 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(Errors.UnexpectedDigitAfterHash, this.state.curPosition()); + } + if (next === 123 || next === 91 && this.hasPlugin("recordAndTuple")) { + this.expectPlugin("recordAndTuple"); + if (this.getPluginOption("recordAndTuple", "syntaxType") === "bar") { + throw this.raise(next === 123 ? Errors.RecordExpressionHashIncorrectStartSyntaxType : Errors.TupleExpressionHashIncorrectStartSyntaxType, 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(139, this.readWord1(next)); + } else if (next === 92) { + ++this.state.pos; + this.finishToken(139, 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(Errors.RecordExpressionBarIncorrectEndSyntaxType, 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(Errors.TupleExpressionBarIncorrectEndSyntaxType, 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) { + 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(Errors.TupleExpressionBarIncorrectStartSyntaxType, 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(Errors.RecordExpressionBarIncorrectStartSyntaxType, 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(Errors.InvalidOrUnexpectedToken, this.state.curPosition(), { + unexpected: 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(Errors.UnterminatedRegExp, createPositionWithColumnOffset(startLoc, 1)); + } + const ch = this.input.charCodeAt(pos); + if (isNewLine(ch)) { + throw this.raise(Errors.UnterminatedRegExp, 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) { + if (mods.includes("u")) { + this.raise(Errors.IncompatibleRegExpUVFlags, nextPos()); + } + } else if (cp === 117) { + if (mods.includes("v")) { + this.raise(Errors.IncompatibleRegExpUVFlags, nextPos()); + } + } + if (mods.includes(char)) { + this.raise(Errors.DuplicateRegExpFlags, nextPos()); + } + } else if (isIdentifierChar(cp) || cp === 92) { + this.raise(Errors.MalformedRegExpFlags, nextPos()); + } else { + break; + } + ++pos; + mods += char; + } + this.state.pos = pos; + this.finishToken(138, { + pattern: content, + flags: mods + }); + } + readInt(radix, len, forceLen = false, allowNumSeparator = true) { + const { + n, + pos + } = readInt(this.input, this.state.pos, this.state.lineStart, this.state.curLine, radix, len, forceLen, allowNumSeparator, this.errorHandlers_readInt, false); + this.state.pos = pos; + return n; + } + readRadixNumber(radix) { + const start = this.state.pos; + const startLoc = this.state.curPosition(); + let isBigInt = false; + this.state.pos += 2; + const val = this.readInt(radix); + if (val == null) { + this.raise(Errors.InvalidDigit, 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(Errors.InvalidDecimal, startLoc); + } + if (isIdentifierStart(this.codePointAtPos(this.state.pos))) { + throw this.raise(Errors.NumberIdentifier, this.state.curPosition()); + } + if (isBigInt) { + const str = this.input.slice(start, this.state.pos).replace(/[_n]/g, ""); + this.finishToken(136, str); + return; + } + this.finishToken(135, val); + } + readNumber(startsWithDot) { + const start = this.state.pos; + const startLoc = this.state.curPosition(); + let isFloat = false; + let isBigInt = false; + let hasExponent = false; + let isOctal = false; + if (!startsWithDot && this.readInt(10) === null) { + this.raise(Errors.InvalidNumber, 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(Errors.StrictOctalLiteral, startLoc); + if (!this.state.strict) { + const underscorePos = integer.indexOf("_"); + if (underscorePos > 0) { + this.raise(Errors.ZeroDigitNumericSeparator, 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(Errors.InvalidOrMissingExponent, startLoc); + } + isFloat = true; + hasExponent = true; + next = this.input.charCodeAt(this.state.pos); + } + if (next === 110) { + if (isFloat || hasLeadingZero) { + this.raise(Errors.InvalidBigIntLiteral, startLoc); + } + ++this.state.pos; + isBigInt = true; + } + if (next === 109) { + this.expectPlugin("decimal", this.state.curPosition()); + if (hasExponent || hasLeadingZero) { + this.raise(Errors.InvalidDecimal, startLoc); + } + ++this.state.pos; + var isDecimal = true; + } + if (isIdentifierStart(this.codePointAtPos(this.state.pos))) { + throw this.raise(Errors.NumberIdentifier, this.state.curPosition()); + } + const str = this.input.slice(start, this.state.pos).replace(/[_mn]/g, ""); + if (isBigInt) { + this.finishToken(136, str); + return; + } + if (isDecimal) { + this.finishToken(137, str); + return; + } + const val = isOctal ? parseInt(str, 8) : parseFloat(str); + this.finishToken(135, val); + } + readCodePoint(throwOnInvalid) { + const { + code, + pos + } = readCodePoint(this.input, this.state.pos, this.state.lineStart, this.state.curLine, throwOnInvalid, this.errorHandlers_readCodePoint); + this.state.pos = pos; + return code; + } + readString(quote) { + const { + str, + pos, + curLine, + lineStart + } = readStringContents(quote === 34 ? "double" : "single", this.input, this.state.pos + 1, this.state.lineStart, this.state.curLine, this.errorHandlers_readStringContents_string); + this.state.pos = pos + 1; + this.state.lineStart = lineStart; + this.state.curLine = curLine; + this.finishToken(134, str); + } + readTemplateContinuation() { + if (!this.match(8)) { + this.unexpected(null, 8); + } + this.state.pos--; + this.readTemplateToken(); + } + readTemplateToken() { + const opening = this.input[this.state.pos]; + const { + str, + firstInvalidLoc, + pos, + curLine, + lineStart + } = readStringContents("template", this.input, this.state.pos + 1, this.state.lineStart, this.state.curLine, this.errorHandlers_readStringContents_template); + this.state.pos = pos + 1; + this.state.lineStart = lineStart; + this.state.curLine = curLine; + if (firstInvalidLoc) { + this.state.firstInvalidTemplateEscapePos = new Position(firstInvalidLoc.curLine, firstInvalidLoc.pos - firstInvalidLoc.lineStart, this.sourceToOffsetPos(firstInvalidLoc.pos)); + } + if (this.input.codePointAt(pos) === 96) { + this.finishToken(24, firstInvalidLoc ? null : opening + str + "`"); + } else { + this.state.pos++; + this.finishToken(25, firstInvalidLoc ? null : opening + str + "${"); + } + } + recordStrictModeErrors(toParseError, at) { + const index = at.index; + if (this.state.strict && !this.state.strictErrors.has(index)) { + this.raise(toParseError, at); + } else { + this.state.strictErrors.set(index, [toParseError, at]); + } + } + 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(Errors.MissingUnicodeEscape, 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(Errors.EscapedCharNotAnIdentifier, 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(132, word); + } + } + checkKeywordEscapes() { + const { + type + } = this.state; + if (tokenIsKeyword(type) && this.state.containsEsc) { + this.raise(Errors.InvalidEscapedReservedWord, this.state.startLoc, { + reservedWord: tokenLabelName(type) + }); + } + } + raise(toParseError, at, details = {}) { + const loc = at instanceof Position ? at : at.loc.start; + const error = toParseError(loc, details); + if (!(this.optionFlags & 2048)) throw error; + if (!this.isLookahead) this.state.errors.push(error); + return error; + } + raiseOverwrite(toParseError, at, details = {}) { + const loc = at instanceof Position ? at : at.loc.start; + const pos = loc.index; + const errors = this.state.errors; + for (let i = errors.length - 1; i >= 0; i--) { + const error = errors[i]; + if (error.loc.index === pos) { + return errors[i] = toParseError(loc, details); + } + if (error.loc.index < pos) break; + } + return this.raise(toParseError, at, details); + } + updateContext(prevType) {} + unexpected(loc, type) { + throw this.raise(Errors.UnexpectedToken, loc != null ? loc : this.state.startLoc, { + expected: type ? tokenLabelName(type) : null + }); + } + expectPlugin(pluginName, loc) { + if (this.hasPlugin(pluginName)) { + return true; + } + throw this.raise(Errors.MissingPlugin, loc != null ? loc : this.state.startLoc, { + missingPlugin: [pluginName] + }); + } + expectOnePlugin(pluginNames) { + if (!pluginNames.some(name => this.hasPlugin(name))) { + throw this.raise(Errors.MissingOneOfPlugins, this.state.startLoc, { + missingPlugin: pluginNames + }); + } + } + errorBuilder(error) { + return (pos, lineStart, curLine) => { + this.raise(error, buildPosition(pos, lineStart, curLine)); + }; + } +} +class ClassScope { + constructor() { + this.privateNames = new Set(); + this.loneAccessors = new Map(); + this.undefinedPrivateNames = new Map(); + } +} +class ClassScopeHandler { + constructor(parser) { + this.parser = void 0; + this.stack = []; + this.undefinedPrivateNames = new Map(); + this.parser = parser; + } + 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.parser.raise(Errors.InvalidPrivateFieldResolution, loc, { + identifierName: name + }); + } + } + } + declarePrivateName(name, elementType, loc) { + const { + privateNames, + loneAccessors, + undefinedPrivateNames + } = this.current(); + let redefined = privateNames.has(name); + if (elementType & 3) { + const accessor = redefined && loneAccessors.get(name); + if (accessor) { + const oldStatic = accessor & 4; + const newStatic = elementType & 4; + const oldKind = accessor & 3; + const newKind = elementType & 3; + redefined = oldKind === newKind || oldStatic !== newStatic; + if (!redefined) loneAccessors.delete(name); + } else if (!redefined) { + loneAccessors.set(name, elementType); + } + } + if (redefined) { + this.parser.raise(Errors.PrivateNameRedeclaration, loc, { + identifierName: 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.parser.raise(Errors.InvalidPrivateFieldResolution, loc, { + identifierName: name + }); + } + } +} +class ExpressionScope { + constructor(type = 0) { + this.type = type; + } + canBeArrowParameterDeclaration() { + return this.type === 2 || this.type === 1; + } + isCertainlyParameterDeclaration() { + return this.type === 3; + } +} +class ArrowHeadParsingScope extends ExpressionScope { + constructor(type) { + super(type); + this.declarationErrors = new Map(); + } + recordDeclarationError(ParsingErrorClass, at) { + const index = at.index; + this.declarationErrors.set(index, [ParsingErrorClass, at]); + } + clearDeclarationError(index) { + this.declarationErrors.delete(index); + } + iterateErrors(iterator) { + this.declarationErrors.forEach(iterator); + } +} +class ExpressionScopeHandler { + constructor(parser) { + this.parser = void 0; + this.stack = [new ExpressionScope()]; + this.parser = parser; + } + enter(scope) { + this.stack.push(scope); + } + exit() { + this.stack.pop(); + } + recordParameterInitializerError(toParseError, node) { + const origin = node.loc.start; + const { + stack + } = this; + let i = stack.length - 1; + let scope = stack[i]; + while (!scope.isCertainlyParameterDeclaration()) { + if (scope.canBeArrowParameterDeclaration()) { + scope.recordDeclarationError(toParseError, origin); + } else { + return; + } + scope = stack[--i]; + } + this.parser.raise(toParseError, origin); + } + recordArrowParameterBindingError(error, node) { + const { + stack + } = this; + const scope = stack[stack.length - 1]; + const origin = node.loc.start; + if (scope.isCertainlyParameterDeclaration()) { + this.parser.raise(error, origin); + } else if (scope.canBeArrowParameterDeclaration()) { + scope.recordDeclarationError(error, origin); + } else { + return; + } + } + recordAsyncArrowParametersError(at) { + const { + stack + } = this; + let i = stack.length - 1; + let scope = stack[i]; + while (scope.canBeArrowParameterDeclaration()) { + if (scope.type === 2) { + scope.recordDeclarationError(Errors.AwaitBindingIdentifier, at); + } + scope = stack[--i]; + } + } + validateAsPattern() { + const { + stack + } = this; + const currentScope = stack[stack.length - 1]; + if (!currentScope.canBeArrowParameterDeclaration()) return; + currentScope.iterateErrors(([toParseError, loc]) => { + this.parser.raise(toParseError, loc); + let i = stack.length - 2; + let scope = stack[i]; + while (scope.canBeArrowParameterDeclaration()) { + scope.clearDeclarationError(loc.index); + scope = stack[--i]; + } + }); + } +} +function newParameterDeclarationScope() { + return new ExpressionScope(3); +} +function newArrowHeadScope() { + return new ArrowHeadParsingScope(1); +} +function newAsyncArrowScope() { + return new ArrowHeadParsingScope(2); +} +function newExpressionScope() { + return new ExpressionScope(); +} +class UtilParser extends Tokenizer { + addExtra(node, key, value, enumerable = true) { + if (!node) return; + let { + extra + } = node; + if (extra == null) { + extra = {}; + node.extra = 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) { + if (this.input.startsWith(name, nameStart)) { + const nextCh = this.input.charCodeAt(nameStart + name.length); + 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, toParseError) { + if (!this.eatContextual(token)) { + if (toParseError != null) { + throw this.raise(toParseError, this.state.startLoc); + } + this.unexpected(null, token); + } + } + canInsertSemicolon() { + return this.match(140) || this.match(8) || this.hasPrecedingLineBreak(); + } + hasPrecedingLineBreak() { + return hasNewLine(this.input, this.offsetToSourcePos(this.state.lastTokEndLoc.index), this.state.start); + } + hasFollowingLineBreak() { + return hasNewLine(this.input, this.state.end, this.nextTokenStart()); + } + isLineTerminator() { + return this.eat(13) || this.canInsertSemicolon(); + } + semicolon(allowAsi = true) { + if (allowAsi ? this.isLineTerminator() : this.eat(13)) return; + this.raise(Errors.MissingSemicolon, this.state.lastTokEndLoc); + } + expect(type, loc) { + if (!this.eat(type)) { + this.unexpected(loc, type); + } + } + 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: 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, + voidPatternLoc + } = refExpressionErrors; + const hasErrors = !!shorthandAssignLoc || !!doubleProtoLoc || !!optionalParametersLoc || !!privateKeyLoc || !!voidPatternLoc; + if (!andThrow) { + return hasErrors; + } + if (shorthandAssignLoc != null) { + this.raise(Errors.InvalidCoverInitializedName, shorthandAssignLoc); + } + if (doubleProtoLoc != null) { + this.raise(Errors.DuplicateProto, doubleProtoLoc); + } + if (privateKeyLoc != null) { + this.raise(Errors.UnexpectedPrivateField, privateKeyLoc); + } + if (optionalParametersLoc != null) { + this.unexpected(optionalParametersLoc); + } + if (voidPatternLoc != null) { + this.raise(Errors.InvalidCoverDiscardElement, voidPatternLoc); + } + } + 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); + } + 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, inModule); + const oldProdParam = this.prodParam; + this.prodParam = new ProductionParameterHandler(); + const oldClassScope = this.classScope; + this.classScope = new ClassScopeHandler(this); + const oldExpressionScope = this.expressionScope; + this.expressionScope = new ExpressionScopeHandler(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 = 0; + if (this.inModule || this.optionFlags & 1) { + paramFlags |= 2; + } + if (this.optionFlags & 32) { + paramFlags |= 1; + } + const isCommonJS = !this.inModule && this.options.sourceType === "commonjs"; + if (isCommonJS || this.optionFlags & 2) { + paramFlags |= 4; + } + this.prodParam.enter(paramFlags); + let scopeFlags = isCommonJS ? 514 : 1; + if (this.optionFlags & 4) { + scopeFlags |= 512; + } + this.scope.enter(scopeFlags); + } + 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; + this.voidPatternLoc = null; + } +} +class Node { + constructor(parser, pos, loc) { + this.type = ""; + this.start = pos; + this.end = 0; + this.loc = new SourceLocation(loc); + if ((parser == null ? void 0 : parser.optionFlags) & 128) 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(undefined, this.start, this.loc.start); + 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; +}; +class NodeUtils extends UtilParser { + startNode() { + const loc = this.state.startLoc; + return new Node(this, loc.index, loc); + } + startNodeAt(loc) { + return new Node(this, loc.index, loc); + } + startNodeAtNode(type) { + return this.startNodeAt(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.optionFlags & 128) node.range[1] = endLoc.index; + if (this.optionFlags & 4096) { + this.processComment(node); + } + return node; + } + resetStartLocation(node, startLoc) { + node.start = startLoc.index; + node.loc.start = startLoc; + if (this.optionFlags & 128) node.range[0] = startLoc.index; + } + resetEndLocation(node, endLoc = this.state.lastTokEndLoc) { + node.end = endLoc.index; + node.loc.end = endLoc; + if (this.optionFlags & 128) node.range[1] = endLoc.index; + } + resetStartLocationFromNode(node, locationNode) { + this.resetStartLocation(node, locationNode.loc.start); + } + castNodeTo(node, type) { + node.type = type; + return node; + } + cloneIdentifier(node) { + const { + type, + start, + end, + loc, + range, + name + } = node; + const cloned = Object.create(NodePrototype); + cloned.type = type; + cloned.start = start; + cloned.end = end; + cloned.loc = loc; + cloned.range = range; + cloned.name = name; + if (node.extra) cloned.extra = node.extra; + return cloned; + } + cloneStringLiteral(node) { + const { + type, + start, + end, + loc, + range, + extra + } = 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.value = node.value; + return cloned; + } +} +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$extra.parenthesized) { + parenthesized = unwrapParenthesizedExpression(node); + if (isLHS) { + if (parenthesized.type === "Identifier") { + this.expressionScope.recordArrowParameterBindingError(Errors.InvalidParenthesizedAssignment, node); + } else if (parenthesized.type !== "CallExpression" && parenthesized.type !== "MemberExpression" && !this.isOptionalMemberExpression(parenthesized)) { + this.raise(Errors.InvalidParenthesizedAssignment, node); + } + } else { + this.raise(Errors.InvalidParenthesizedAssignment, node); + } + } + switch (node.type) { + case "Identifier": + case "ObjectPattern": + case "ArrayPattern": + case "AssignmentPattern": + case "RestElement": + case "VoidPattern": + break; + case "ObjectExpression": + this.castNodeTo(node, "ObjectPattern"); + for (let i = 0, length = node.properties.length, last = length - 1; i < length; i++) { + var _node$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(Errors.RestTrailingComma, 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": + { + throw new Error("Internal @babel/parser error (this is a bug, please report it)." + " SpreadElement should be converted by .toAssignable's caller."); + } + case "ArrayExpression": + this.castNodeTo(node, "ArrayPattern"); + this.toAssignableList(node.elements, (_node$extra3 = node.extra) == null ? void 0 : _node$extra3.trailingCommaLoc, isLHS); + break; + case "AssignmentExpression": + if (node.operator !== "=") { + this.raise(Errors.MissingEqInAssignment, node.left.loc.end); + } + this.castNodeTo(node, "AssignmentPattern"); + delete node.operator; + if (node.left.type === "VoidPattern") { + this.raise(Errors.VoidPatternInitializer, node.left); + } + this.toAssignable(node.left, isLHS); + break; + case "ParenthesizedExpression": + this.toAssignable(parenthesized, isLHS); + break; + } + } + toAssignableObjectExpressionProp(prop, isLast, isLHS) { + if (prop.type === "ObjectMethod") { + this.raise(prop.kind === "get" || prop.kind === "set" ? Errors.PatternHasAccessor : Errors.PatternHasMethod, prop.key); + } else if (prop.type === "SpreadElement") { + this.castNodeTo(prop, "RestElement"); + const arg = prop.argument; + this.checkToRestConversion(arg, false); + this.toAssignable(arg, isLHS); + if (!isLast) { + this.raise(Errors.RestTrailingComma, prop); + } + } else { + this.toAssignable(prop, isLHS); + } + } + toAssignableList(exprList, trailingCommaLoc, isLHS) { + const end = exprList.length - 1; + for (let i = 0; i <= end; i++) { + const elt = exprList[i]; + if (!elt) continue; + this.toAssignableListItem(exprList, i, isLHS); + if (elt.type === "RestElement") { + if (i < end) { + this.raise(Errors.RestTrailingComma, elt); + } else if (trailingCommaLoc) { + this.raise(Errors.RestTrailingComma, trailingCommaLoc); + } + } + } + } + toAssignableListItem(exprList, index, isLHS) { + const node = exprList[index]; + if (node.type === "SpreadElement") { + this.castNodeTo(node, "RestElement"); + const arg = node.argument; + this.checkToRestConversion(arg, true); + this.toAssignable(arg, isLHS); + } else { + this.toAssignable(node, isLHS); + } + } + isAssignable(node, isBinding) { + switch (node.type) { + case "Identifier": + case "ObjectPattern": + case "ArrayPattern": + case "AssignmentPattern": + case "RestElement": + case "VoidPattern": + 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) { + const node = this.startNode(); + this.next(); + node.argument = this.parseMaybeAssignAllowIn(refExpressionErrors, undefined); + return this.finishNode(node, "SpreadElement"); + } + parseRestBinding() { + const node = this.startNode(); + this.next(); + const argument = this.parseBindingAtom(); + if (argument.type === "VoidPattern") { + this.raise(Errors.UnexpectedVoidPattern, argument); + } + node.argument = argument; + return this.finishNode(node, "RestElement"); + } + parseBindingAtom() { + switch (this.state.type) { + case 0: + { + const node = this.startNode(); + this.next(); + node.elements = this.parseBindingList(3, 93, 1); + return this.finishNode(node, "ArrayPattern"); + } + case 5: + return this.parseObjectLike(8, true); + case 88: + return this.parseVoidPattern(null); + } + return this.parseIdentifier(); + } + parseBindingList(close, closeCharCode, flags) { + const allowEmpty = flags & 1; + 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)) { + let rest = this.parseRestBinding(); + if (this.hasPlugin("flow") || flags & 2) { + rest = this.parseFunctionParamType(rest); + } + elts.push(rest); + if (!this.checkCommaAfterRest(closeCharCode)) { + this.expect(close); + break; + } + } else { + const decorators = []; + if (flags & 2) { + if (this.match(26) && this.hasPlugin("decorators")) { + this.raise(Errors.UnsupportedParameterDecorator, this.state.startLoc); + } + while (this.match(26)) { + decorators.push(this.parseDecorator()); + } + } + elts.push(this.parseBindingElement(flags, decorators)); + } + } + return elts; + } + parseBindingRestProperty(prop) { + this.next(); + if (this.hasPlugin("discardBinding") && this.match(88)) { + prop.argument = this.parseVoidPattern(null); + this.raise(Errors.UnexpectedVoidPattern, prop.argument); + } else { + prop.argument = this.parseIdentifier(); + } + this.checkCommaAfterRest(125); + return this.finishNode(prop, "RestElement"); + } + parseBindingProperty() { + const { + type, + startLoc + } = this.state; + if (type === 21) { + return this.parseBindingRestProperty(this.startNode()); + } + const prop = this.startNode(); + if (type === 139) { + this.expectPlugin("destructuringPrivate", startLoc); + this.classScope.usePrivateName(this.state.value, startLoc); + prop.key = this.parsePrivateName(); + } else { + this.parsePropertyName(prop); + } + prop.method = false; + return this.parseObjPropValue(prop, startLoc, false, false, true, false); + } + parseBindingElement(flags, decorators) { + const left = this.parseMaybeDefault(); + if (this.hasPlugin("flow") || flags & 2) { + this.parseFunctionParamType(left); + } + if (decorators.length) { + left.decorators = decorators; + this.resetStartLocationFromNode(left, decorators[0]); + } + const elt = this.parseMaybeDefault(left.loc.start, left); + return elt; + } + parseFunctionParamType(param) { + return param; + } + parseMaybeDefault(startLoc, left) { + startLoc != null ? startLoc : startLoc = this.state.startLoc; + left = left != null ? left : this.parseBindingAtom(); + if (!this.eat(29)) return left; + const node = this.startNodeAt(startLoc); + if (left.type === "VoidPattern") { + this.raise(Errors.VoidPatternInitializer, left); + } + node.left = left; + node.right = this.parseMaybeAssignAllowIn(); + return this.finishNode(node, "AssignmentPattern"); + } + isValidLVal(type, disallowCallExpression, isUnparenthesizedInAssign, binding) { + switch (type) { + case "AssignmentPattern": + return "left"; + case "RestElement": + return "argument"; + case "ObjectProperty": + return "value"; + case "ParenthesizedExpression": + return "expression"; + case "ArrayPattern": + return "elements"; + case "ObjectPattern": + return "properties"; + case "VoidPattern": + return true; + case "CallExpression": + if (!disallowCallExpression && !this.state.strict && this.optionFlags & 8192) { + return true; + } + } + return false; + } + isOptionalMemberExpression(expression) { + return expression.type === "OptionalMemberExpression"; + } + checkLVal(expression, ancestor, binding = 64, checkClashes = false, strictModeChanged = false, hasParenthesizedAncestor = false, disallowCallExpression = false) { + var _expression$extra; + const type = expression.type; + if (this.isObjectMethod(expression)) return; + const isOptionalMemberExpression = this.isOptionalMemberExpression(expression); + if (isOptionalMemberExpression || type === "MemberExpression") { + if (isOptionalMemberExpression) { + this.expectPlugin("optionalChainingAssign", expression.loc.start); + if (ancestor.type !== "AssignmentExpression") { + this.raise(Errors.InvalidLhsOptionalChaining, expression, { + ancestor + }); + } + } + if (binding !== 64) { + this.raise(Errors.InvalidPropertyBindingPattern, expression); + } + return; + } + if (type === "Identifier") { + this.checkIdentifier(expression, binding, strictModeChanged); + const { + name + } = expression; + if (checkClashes) { + if (checkClashes.has(name)) { + this.raise(Errors.ParamDupe, expression); + } else { + checkClashes.add(name); + } + } + return; + } else if (type === "VoidPattern" && ancestor.type === "CatchClause") { + this.raise(Errors.VoidPatternCatchClauseParam, expression); + } + const unwrappedExpression = unwrapParenthesizedExpression(expression); + disallowCallExpression || (disallowCallExpression = unwrappedExpression.type === "CallExpression" && (unwrappedExpression.callee.type === "Import" || unwrappedExpression.callee.type === "Super")); + const validity = this.isValidLVal(type, disallowCallExpression, !(hasParenthesizedAncestor || (_expression$extra = expression.extra) != null && _expression$extra.parenthesized) && ancestor.type === "AssignmentExpression", binding); + if (validity === true) return; + if (validity === false) { + const ParseErrorClass = binding === 64 ? Errors.InvalidLhs : Errors.InvalidLhsBinding; + this.raise(ParseErrorClass, expression, { + ancestor + }); + return; + } + let key, isParenthesizedExpression; + if (typeof validity === "string") { + key = validity; + isParenthesizedExpression = type === "ParenthesizedExpression"; + } else { + [key, isParenthesizedExpression] = validity; + } + const nextAncestor = type === "ArrayPattern" || type === "ObjectPattern" ? { + type + } : ancestor; + const val = expression[key]; + if (Array.isArray(val)) { + for (const child of val) { + if (child) { + this.checkLVal(child, nextAncestor, binding, checkClashes, strictModeChanged, isParenthesizedExpression, true); + } + } + } else if (val) { + this.checkLVal(val, nextAncestor, binding, checkClashes, strictModeChanged, isParenthesizedExpression, disallowCallExpression); + } + } + checkIdentifier(at, bindingType, strictModeChanged = false) { + if (this.state.strict && (strictModeChanged ? isStrictBindReservedWord(at.name, this.inModule) : isStrictBindOnlyReservedWord(at.name))) { + if (bindingType === 64) { + this.raise(Errors.StrictEvalArguments, at, { + referenceName: at.name + }); + } else { + this.raise(Errors.StrictEvalArgumentsBinding, at, { + bindingName: at.name + }); + } + } + if (bindingType & 8192 && at.name === "let") { + this.raise(Errors.LetInLexicalBinding, at); + } + if (!(bindingType & 64)) { + this.declareNameFromIdentifier(at, bindingType); + } + } + declareNameFromIdentifier(identifier, binding) { + this.scope.declareName(identifier.name, binding, identifier.loc.start); + } + checkToRestConversion(node, allowPattern) { + switch (node.type) { + case "ParenthesizedExpression": + this.checkToRestConversion(node.expression, allowPattern); + break; + case "Identifier": + case "MemberExpression": + break; + case "ArrayExpression": + case "ObjectExpression": + if (allowPattern) break; + default: + this.raise(Errors.InvalidRestAssignmentPattern, node); + } + } + checkCommaAfterRest(close) { + if (!this.match(12)) { + return false; + } + this.raise(this.lookaheadCharCode() === close ? Errors.RestTrailingComma : Errors.ElementAfterRest, this.state.startLoc); + return true; + } +} +const keywordAndTSRelationalOperator = /in(?:stanceof)?|as|satisfies/y; +function nonNull(x) { + if (x == null) { + throw new Error(`Unexpected ${x} value.`); + } + return x; +} +function assert(x) { + if (!x) { + throw new Error("Assert fail"); + } +} +const TSErrors = ParseErrorEnum`typescript`({ + AbstractMethodHasImplementation: ({ + methodName + }) => `Method '${methodName}' cannot have an implementation because it is marked abstract.`, + AbstractPropertyHasInitializer: ({ + propertyName + }) => `Property '${propertyName}' cannot have an initializer because it is marked abstract.`, + AccessorCannotBeOptional: "An 'accessor' property cannot be declared optional.", + AccessorCannotDeclareThisParameter: "'get' and 'set' accessors cannot declare 'this' parameters.", + AccessorCannotHaveTypeParameters: "An accessor cannot have type parameters.", + ClassMethodHasDeclare: "Class methods cannot have the 'declare' modifier.", + ClassMethodHasReadonly: "Class methods cannot have the 'readonly' modifier.", + ConstInitializerMustBeStringOrNumericLiteralOrLiteralEnumReference: "A 'const' initializer in an ambient context must be a string or numeric literal or literal enum reference.", + ConstructorHasTypeParameters: "Type parameters cannot appear on a constructor declaration.", + DeclareAccessor: ({ + kind + }) => `'declare' is not allowed in ${kind}ters.`, + DeclareClassFieldHasInitializer: "Initializers are not allowed in ambient contexts.", + DeclareFunctionHasImplementation: "An implementation cannot be declared in ambient contexts.", + DuplicateAccessibilityModifier: ({ + modifier + }) => `Accessibility modifier already seen: '${modifier}'.`, + DuplicateModifier: ({ + modifier + }) => `Duplicate modifier: '${modifier}'.`, + EmptyHeritageClauseType: ({ + token + }) => `'${token}' 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'.", + ImportReflectionHasImportType: "An `import module` declaration can not use `type` modifier", + IncompatibleModifiers: ({ + modifiers + }) => `'${modifiers[0]}' modifier cannot be used with '${modifiers[1]}' modifier.`, + IndexSignatureHasAbstract: "Index signatures cannot have the 'abstract' modifier.", + IndexSignatureHasAccessibility: ({ + modifier + }) => `Index signatures cannot have an accessibility modifier ('${modifier}').`, + IndexSignatureHasDeclare: "Index signatures cannot have the 'declare' modifier.", + IndexSignatureHasOverride: "'override' modifier cannot appear on an index signature.", + IndexSignatureHasStatic: "Index signatures cannot have the 'static' modifier.", + InitializerNotAllowedInAmbientContext: "Initializers are not allowed in ambient contexts.", + InvalidHeritageClauseType: ({ + token + }) => `'${token}' list can only include identifiers or qualified-names with optional type arguments.`, + InvalidModifierOnAwaitUsingDeclaration: modifier => `'${modifier}' modifier cannot appear on an await using declaration.`, + InvalidModifierOnTypeMember: ({ + modifier + }) => `'${modifier}' modifier cannot appear on a type member.`, + InvalidModifierOnTypeParameter: ({ + modifier + }) => `'${modifier}' modifier cannot appear on a type parameter.`, + InvalidModifierOnTypeParameterPositions: ({ + modifier + }) => `'${modifier}' modifier can only appear on a type parameter of a class, interface or type alias.`, + InvalidModifierOnUsingDeclaration: modifier => `'${modifier}' modifier cannot appear on a using declaration.`, + InvalidModifiersOrder: ({ + orderedModifiers + }) => `'${orderedModifiers[0]}' modifier must precede '${orderedModifiers[1]}' modifier.`, + InvalidPropertyAccessAfterInstantiationExpression: "Invalid property access after an instantiation expression. " + "You can either wrap the instantiation expression in parentheses, or delete the type arguments.", + InvalidTupleMemberLabel: "Tuple members must be labeled with a simple identifier.", + MissingInterfaceName: "'interface' declarations must be followed by an identifier.", + NonAbstractClassHasAbstractMethod: "Abstract methods can only appear within an abstract class.", + NonClassMethodPropertyHasAbstractModifier: "'abstract' modifier can only appear on a class, method, or property declaration.", + OptionalTypeBeforeRequired: "A required element cannot follow an optional element.", + OverrideNotInSubClass: "This member cannot have an 'override' modifier because its containing class does not extend another class.", + PatternIsOptional: "A binding pattern parameter cannot be optional in an implementation signature.", + PrivateElementHasAbstract: "Private elements cannot have the 'abstract' modifier.", + PrivateElementHasAccessibility: ({ + modifier + }) => `Private elements cannot have an accessibility modifier ('${modifier}').`, + ReadonlyForMethodSignature: "'readonly' modifier can only appear on a property declaration or index signature.", + ReservedArrowTypeParam: "This syntax is reserved in files with the .mts or .cts extension. Add a trailing comma, as in `() => ...`.", + ReservedTypeAssertion: "This syntax is reserved in files with the .mts or .cts extension. Use an `as` expression instead.", + SetAccessorCannotHaveOptionalParameter: "A 'set' accessor cannot have an optional parameter.", + SetAccessorCannotHaveRestParameter: "A 'set' accessor cannot have rest parameter.", + SetAccessorCannotHaveReturnType: "A 'set' accessor cannot have a return type annotation.", + SingleTypeParameterWithoutTrailingComma: ({ + typeParameterName + }) => `Single type parameter ${typeParameterName} should have a trailing comma. Example usage: <${typeParameterName},>.`, + StaticBlockCannotHaveModifier: "Static class blocks cannot have any modifier.", + TupleOptionalAfterType: "A labeled tuple optional element must be declared using a question mark after the name and before the colon (`name?: type`), rather than after the type (`name: type?`).", + 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: ({ + type + }) => `Name in a signature must be an Identifier, ObjectPattern or ArrayPattern, instead got ${type}.`, + UsingDeclarationInAmbientContext: kind => `'${kind}' declarations are not allowed in ambient contexts.` +}); +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"; +} +function tsIsVarianceAnnotations(modifier) { + return modifier === "in" || modifier === "out"; +} +var typescript = superClass => class TypeScriptParserMixin extends superClass { + constructor(...args) { + super(...args); + this.tsParseInOutModifiers = this.tsParseModifiers.bind(this, { + allowedModifiers: ["in", "out"], + disallowedModifiers: ["const", "public", "private", "protected", "readonly", "declare", "abstract", "override"], + errorTemplate: TSErrors.InvalidModifierOnTypeParameter + }); + this.tsParseConstModifier = this.tsParseModifiers.bind(this, { + allowedModifiers: ["const"], + disallowedModifiers: ["in", "out"], + errorTemplate: TSErrors.InvalidModifierOnTypeParameterPositions + }); + this.tsParseInOutConstModifiers = this.tsParseModifiers.bind(this, { + allowedModifiers: ["in", "out", "const"], + disallowedModifiers: ["public", "private", "protected", "readonly", "declare", "abstract", "override"], + errorTemplate: TSErrors.InvalidModifierOnTypeParameter + }); + } + 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(139) || this.isLiteralPropertyName(); + } + tsNextTokenOnSameLineAndCanFollowModifier() { + this.next(); + if (this.hasPrecedingLineBreak()) { + return false; + } + return this.tsTokenCanFollowModifier(); + } + tsNextTokenCanFollowModifier() { + if (this.match(106)) { + this.next(); + return this.tsTokenCanFollowModifier(); + } + return this.tsNextTokenOnSameLineAndCanFollowModifier(); + } + tsParseModifier(allowedModifiers, stopOnStartOfClassStaticBlock, hasSeenStaticModifier) { + if (!tokenIsIdentifier(this.state.type) && this.state.type !== 58 && this.state.type !== 75) { + return undefined; + } + const modifier = this.state.value; + if (allowedModifiers.includes(modifier)) { + if (hasSeenStaticModifier && this.match(106)) { + return undefined; + } + if (stopOnStartOfClassStaticBlock && this.tsIsStartOfStaticBlocks()) { + return undefined; + } + if (this.tsTryParse(this.tsNextTokenCanFollowModifier.bind(this))) { + return modifier; + } + } + return undefined; + } + tsParseModifiers({ + allowedModifiers, + disallowedModifiers, + stopOnStartOfClassStaticBlock, + errorTemplate = TSErrors.InvalidModifierOnTypeMember + }, modified) { + const enforceOrder = (loc, modifier, before, after) => { + if (modifier === before && modified[after]) { + this.raise(TSErrors.InvalidModifiersOrder, loc, { + orderedModifiers: [before, after] + }); + } + }; + const incompatible = (loc, modifier, mod1, mod2) => { + if (modified[mod1] && modifier === mod2 || modified[mod2] && modifier === mod1) { + this.raise(TSErrors.IncompatibleModifiers, loc, { + modifiers: [mod1, mod2] + }); + } + }; + for (;;) { + const { + startLoc + } = this.state; + const modifier = this.tsParseModifier(allowedModifiers.concat(disallowedModifiers != null ? disallowedModifiers : []), stopOnStartOfClassStaticBlock, modified.static); + if (!modifier) break; + if (tsIsAccessModifier(modifier)) { + if (modified.accessibility) { + this.raise(TSErrors.DuplicateAccessibilityModifier, startLoc, { + modifier + }); + } else { + enforceOrder(startLoc, modifier, modifier, "override"); + enforceOrder(startLoc, modifier, modifier, "static"); + enforceOrder(startLoc, modifier, modifier, "readonly"); + modified.accessibility = modifier; + } + } else if (tsIsVarianceAnnotations(modifier)) { + if (modified[modifier]) { + this.raise(TSErrors.DuplicateModifier, startLoc, { + modifier + }); + } + modified[modifier] = true; + enforceOrder(startLoc, modifier, "in", "out"); + } else { + if (hasOwnProperty.call(modified, modifier)) { + this.raise(TSErrors.DuplicateModifier, 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, 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); + } + } + 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.lastTokStartLoc.index; + 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(134)) { + this.raise(TSErrors.UnsupportedImportTypeArgument, this.state.startLoc); + node.argument = super.parseExprAtom(); + } else { + node.argument = this.parseStringLiteral(this.state.value); + } + if (this.eat(12)) { + node.options = this.tsParseImportTypeOptions(); + } else { + node.options = null; + } + this.expect(11); + if (this.eat(16)) { + node.qualifier = this.tsParseEntityName(1 | 2); + } + if (this.match(47)) { + node.typeParameters = this.tsParseTypeArguments(); + } + return this.finishNode(node, "TSImportType"); + } + tsParseImportTypeOptions() { + const node = this.startNode(); + this.expect(5); + const withProperty = this.startNode(); + if (this.isContextual(76)) { + withProperty.method = false; + withProperty.key = this.parseIdentifier(true); + withProperty.computed = false; + withProperty.shorthand = false; + } else { + this.unexpected(null, 76); + } + this.expect(14); + withProperty.value = this.tsParseImportTypeWithPropertyValue(); + node.properties = [this.finishObjectProperty(withProperty)]; + this.eat(12); + this.expect(8); + return this.finishNode(node, "ObjectExpression"); + } + tsParseImportTypeWithPropertyValue() { + const node = this.startNode(); + const properties = []; + this.expect(5); + while (!this.match(8)) { + const type = this.state.type; + if (tokenIsIdentifier(type) || type === 134) { + properties.push(super.parsePropertyDefinition(null)); + } else { + this.unexpected(); + } + this.eat(12); + } + node.properties = properties; + this.next(); + return this.finishNode(node, "ObjectExpression"); + } + tsParseEntityName(flags) { + let entity; + if (flags & 1 && this.match(78)) { + if (flags & 2) { + entity = this.parseIdentifier(true); + } else { + const node = this.startNode(); + this.next(); + entity = this.finishNode(node, "ThisExpression"); + } + } else { + entity = this.parseIdentifier(!!(flags & 1)); + } + while (this.eat(16)) { + const node = this.startNodeAtNode(entity); + node.left = entity; + node.right = this.parseIdentifier(!!(flags & 1)); + entity = this.finishNode(node, "TSQualifiedName"); + } + return entity; + } + tsParseTypeReference() { + const node = this.startNode(); + node.typeName = this.tsParseEntityName(1); + 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(1 | 2); + } + if (!this.hasPrecedingLineBreak() && this.match(47)) { + node.typeParameters = this.tsParseTypeArguments(); + } + return this.finishNode(node, "TSTypeQuery"); + } + tsParseTypeParameter(parseModifiers) { + const node = this.startNode(); + parseModifiers(node); + node.name = this.tsParseTypeParameterName(); + node.constraint = this.tsEatThenParseType(81); + node.default = this.tsEatThenParseType(29); + return this.finishNode(node, "TSTypeParameter"); + } + tsTryParseTypeParameters(parseModifiers) { + if (this.match(47)) { + return this.tsParseTypeParameters(parseModifiers); + } + } + tsParseTypeParameters(parseModifiers) { + const node = this.startNode(); + if (this.match(47) || this.match(143)) { + this.next(); + } else { + this.unexpected(); + } + const refTrailingCommaPos = { + value: -1 + }; + node.params = this.tsParseBracketedList("TypeParametersOrArguments", this.tsParseTypeParameter.bind(this, parseModifiers), 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"); + } + tsFillSignature(returnToken, signature) { + const returnTokenRequired = returnToken === 19; + const paramsKey = "parameters"; + const returnTypeKey = "typeAnnotation"; + signature.typeParameters = this.tsTryParseTypeParameters(this.tsParseConstModifier); + 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() { + const list = super.parseBindingList(11, 41, 2); + for (const pattern of list) { + const { + type + } = pattern; + if (type === "AssignmentPattern" || type === "TSParameterProperty") { + this.raise(TSErrors.UnsupportedSignatureParameterKind, pattern, { + type + }); + } + } + return list; + } + 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; + } + 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; + if (this.match(10) || this.match(47)) { + if (readonly) { + this.raise(TSErrors.ReadonlyForMethodSignature, node); + } + const method = node; + if (method.kind && this.match(47)) { + this.raise(TSErrors.AccessorCannotHaveTypeParameters, 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(Errors.BadGetterArity, this.state.curPosition()); + if (this.isThisParam(method[paramsKey][0])) { + this.raise(TSErrors.AccessorCannotDeclareThisParameter, this.state.curPosition()); + } + } + } else if (method.kind === "set") { + if (method[paramsKey].length !== 1) { + this.raise(Errors.BadSetterArity, this.state.curPosition()); + } else { + const firstParameter = method[paramsKey][0]; + if (this.isThisParam(firstParameter)) { + this.raise(TSErrors.AccessorCannotDeclareThisParameter, this.state.curPosition()); + } + if (firstParameter.type === "Identifier" && firstParameter.optional) { + this.raise(TSErrors.SetAccessorCannotHaveOptionalParameter, this.state.curPosition()); + } + if (firstParameter.type === "RestElement") { + this.raise(TSErrors.SetAccessorCannotHaveRestParameter, this.state.curPosition()); + } + } + if (method[returnTypeKey]) { + this.raise(TSErrors.SetAccessorCannotHaveReturnType, method[returnTypeKey]); + } + } else { + method.kind = "method"; + } + return this.finishNode(method, "TSMethodSignature"); + } else { + const property = node; + 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({ + allowedModifiers: ["readonly"], + disallowedModifiers: ["declare", "abstract", "private", "protected", "public", "static", "override"] + }, node); + const idx = this.tsTryParseIndexSignature(node); + if (idx) { + return idx; + } + super.parsePropertyName(node); + if (!node.computed && node.key.type === "Identifier" && (node.key.name === "get" || node.key.name === "set") && this.tsTokenCanFollowModifier()) { + node.kind = node.key.name; + super.parsePropertyName(node); + if (!this.match(10) && !this.match(47)) { + this.unexpected(null, 10); + } + } + 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(122); + } + if (this.isContextual(122)) { + this.next(); + } + if (!this.match(0)) { + return false; + } + this.next(); + if (!this.tsIsIdentifier()) { + return false; + } + this.next(); + return this.match(58); + } + tsParseMappedType() { + const node = this.startNode(); + this.expect(5); + if (this.match(53)) { + node.readonly = this.state.value; + this.next(); + this.expectContextual(122); + } else if (this.eatContextual(122)) { + node.readonly = true; + } + this.expect(0); + const typeParameter = this.startNode(); + typeParameter.name = this.tsParseTypeParameterName(); + typeParameter.constraint = this.tsExpectThenParseType(58); + node.typeParameter = this.finishNode(typeParameter, "TSTypeParameter"); + 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; + node.elementTypes.forEach(elementNode => { + const { + type + } = elementNode; + if (seenOptionalElement && type !== "TSRestType" && type !== "TSOptionalType" && !(type === "TSNamedTupleMember" && elementNode.optional)) { + this.raise(TSErrors.OptionalTypeBeforeRequired, elementNode); + } + seenOptionalElement || (seenOptionalElement = type === "TSNamedTupleMember" && elementNode.optional || type === "TSOptionalType"); + }); + return this.finishNode(node, "TSTupleType"); + } + tsParseTupleElementType() { + const restStartLoc = this.state.startLoc; + const rest = this.eat(21); + const { + startLoc + } = this.state; + let labeled; + let label; + let optional; + let type; + const isWord = tokenIsKeywordOrIdentifier(this.state.type); + const chAfterWord = isWord ? this.lookaheadCharCode() : null; + if (chAfterWord === 58) { + labeled = true; + optional = false; + label = this.parseIdentifier(true); + this.expect(14); + type = this.tsParseType(); + } else if (chAfterWord === 63) { + optional = true; + const wordName = this.state.value; + const typeOrLabel = this.tsParseNonArrayType(); + if (this.lookaheadCharCode() === 58) { + labeled = true; + label = this.createIdentifier(this.startNodeAt(startLoc), wordName); + this.expect(17); + this.expect(14); + type = this.tsParseType(); + } else { + labeled = false; + type = typeOrLabel; + this.expect(17); + } + } else { + type = this.tsParseType(); + optional = this.eat(17); + labeled = this.eat(14); + } + if (labeled) { + let labeledNode; + if (label) { + labeledNode = this.startNodeAt(startLoc); + labeledNode.optional = optional; + labeledNode.label = label; + labeledNode.elementType = type; + if (this.eat(17)) { + labeledNode.optional = true; + this.raise(TSErrors.TupleOptionalAfterType, this.state.lastTokStartLoc); + } + } else { + labeledNode = this.startNodeAt(startLoc); + labeledNode.optional = optional; + this.raise(TSErrors.InvalidTupleMemberLabel, type); + labeledNode.label = type; + labeledNode.elementType = this.tsParseType(); + } + type = this.finishNode(labeledNode, "TSNamedTupleMember"); + } else if (optional) { + const optionalTypeNode = this.startNodeAt(startLoc); + optionalTypeNode.typeAnnotation = type; + type = this.finishNode(optionalTypeNode, "TSOptionalType"); + } + if (rest) { + const restNode = this.startNodeAt(restStartLoc); + 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.tsInAllowConditionalTypesContext(() => this.tsFillSignature(19, node)); + return this.finishNode(node, type); + } + tsParseLiteralTypeNode() { + const node = this.startNode(); + switch (this.state.type) { + case 135: + case 136: + case 134: + case 85: + case 86: + node.literal = super.parseExprAtom(); + break; + default: + this.unexpected(); + } + return this.finishNode(node, "TSLiteralType"); + } + tsParseTemplateLiteralType() { + const node = this.startNode(); + node.literal = super.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(116) && !this.hasPrecedingLineBreak()) { + return this.tsParseThisTypePredicate(thisKeyword); + } else { + return thisKeyword; + } + } + tsParseNonArrayType() { + switch (this.state.type) { + case 134: + case 135: + case 136: + case 85: + case 86: + return this.tsParseLiteralTypeNode(); + case 53: + if (this.state.value === "-") { + const node = this.startNode(); + const nextToken = this.lookahead(); + if (nextToken.type !== 135 && nextToken.type !== 136) { + 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() { + const { + startLoc + } = this.state; + let type = this.tsParseNonArrayType(); + while (!this.hasPrecedingLineBreak() && this.eat(0)) { + if (this.match(3)) { + const node = this.startNodeAt(startLoc); + node.elementType = type; + this.expect(3); + type = this.finishNode(node, "TSArrayType"); + } else { + const node = this.startNodeAt(startLoc); + 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(115); + const typeParameter = this.startNode(); + typeParameter.name = this.tsParseTypeParameterName(); + typeParameter.constraint = this.tsTryParse(() => this.tsParseConstraintForInferType()); + node.typeParameter = this.finishNode(typeParameter, "TSTypeParameter"); + return this.finishNode(node, "TSInferType"); + } + tsParseConstraintForInferType() { + if (this.eat(81)) { + const constraint = this.tsInDisallowConditionalTypesContext(() => this.tsParseType()); + if (this.state.inDisallowConditionalTypesContext || !this.match(17)) { + return constraint; + } + } + } + tsParseTypeOperatorOrHigher() { + const isTypeOperator = tokenIsTSTypeOperator(this.state.type) && !this.state.containsEsc; + return isTypeOperator ? this.tsParseTypeOperator() : this.isContextual(115) ? this.tsParseInferType() : this.tsInAllowConditionalTypesContext(() => 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)) { + const { + errors + } = this.state; + const previousErrorCount = errors.length; + try { + this.parseObjectLike(8, true); + return errors.length === previousErrorCount; + } catch (_unused) { + return false; + } + } + if (this.match(0)) { + this.next(); + const { + errors + } = this.state; + const previousErrorCount = errors.length; + try { + super.parseBindingList(3, 93, 1); + return errors.length === previousErrorCount; + } catch (_unused2) { + return false; + } + } + 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() { + if (this.match(14)) { + return this.tsParseTypeOrTypePredicateAnnotation(14); + } + } + tsTryParseTypeAnnotation() { + if (this.match(14)) { + return this.tsParseTypeAnnotation(); + } + } + tsTryParseType() { + return this.tsEatThenParseType(14); + } + tsParseTypePredicatePrefix() { + const id = this.parseIdentifier(); + if (this.isContextual(116) && !this.hasPrecedingLineBreak()) { + this.next(); + return id; + } + } + tsParseTypePredicateAsserts() { + if (this.state.type !== 109) { + return false; + } + const containsEsc = this.state.containsEsc; + this.next(); + if (!tokenIsIdentifier(this.state.type) && !this.match(78)) { + return false; + } + if (containsEsc) { + this.raise(Errors.InvalidEscapedReservedWord, this.state.lastTokStartLoc, { + reservedWord: "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.state.inDisallowConditionalTypesContext || this.hasPrecedingLineBreak() || !this.eat(81)) { + return type; + } + const node = this.startNodeAtNode(type); + node.checkType = type; + node.extendsType = this.tsInDisallowConditionalTypesContext(() => this.tsParseNonConditionalType()); + this.expect(17); + node.trueType = this.tsInAllowConditionalTypesContext(() => this.tsParseType()); + this.expect(14); + node.falseType = this.tsInAllowConditionalTypesContext(() => this.tsParseType()); + return this.finishNode(node, "TSConditionalType"); + } + isAbstractConstructorSignature() { + return this.isContextual(124) && this.isLookaheadContextual("new"); + } + 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, this.state.startLoc); + } + const node = this.startNode(); + node.typeAnnotation = this.tsInType(() => { + this.next(); + return this.match(75) ? this.tsParseTypeReference() : this.tsParseType(); + }); + this.expect(48); + node.expression = this.parseMaybeUnary(); + return this.finishNode(node, "TSTypeAssertion"); + } + tsParseHeritageClause(token) { + const originalStartLoc = this.state.startLoc; + const delimitedList = this.tsParseDelimitedList("HeritageClauseElement", () => { + const node = this.startNode(); + node.expression = this.tsParseEntityName(1 | 2); + if (this.match(47)) { + node.typeParameters = this.tsParseTypeArguments(); + } + return this.finishNode(node, "TSExpressionWithTypeArguments"); + }); + if (!delimitedList.length) { + this.raise(TSErrors.EmptyHeritageClauseType, originalStartLoc, { + token + }); + } + return delimitedList; + } + tsParseInterfaceDeclaration(node, properties = {}) { + if (this.hasFollowingLineBreak()) return null; + this.expectContextual(129); + if (properties.declare) node.declare = true; + if (tokenIsIdentifier(this.state.type)) { + node.id = this.parseIdentifier(); + this.checkIdentifier(node.id, 130); + } else { + node.id = null; + this.raise(TSErrors.MissingInterfaceName, this.state.startLoc); + } + node.typeParameters = this.tsTryParseTypeParameters(this.tsParseInOutConstModifiers); + 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.checkIdentifier(node.id, 2); + node.typeAnnotation = this.tsInType(() => { + node.typeParameters = this.tsTryParseTypeParameters(this.tsParseInOutModifiers); + this.expect(29); + if (this.isContextual(114) && this.lookaheadCharCode() !== 46) { + const node = this.startNode(); + this.next(); + return this.finishNode(node, "TSIntrinsicKeyword"); + } + return this.tsParseType(); + }); + this.semicolon(); + return this.finishNode(node, "TSTypeAliasDeclaration"); + } + tsInTopLevelContext(cb) { + if (this.curContext() !== types.brace) { + const oldContext = this.state.context; + this.state.context = [oldContext[0]]; + try { + return cb(); + } finally { + this.state.context = oldContext; + } + } else { + return cb(); + } + } + tsInType(cb) { + const oldInType = this.state.inType; + this.state.inType = true; + try { + return cb(); + } finally { + this.state.inType = oldInType; + } + } + tsInDisallowConditionalTypesContext(cb) { + const oldInDisallowConditionalTypesContext = this.state.inDisallowConditionalTypesContext; + this.state.inDisallowConditionalTypesContext = true; + try { + return cb(); + } finally { + this.state.inDisallowConditionalTypesContext = oldInDisallowConditionalTypesContext; + } + } + tsInAllowConditionalTypesContext(cb) { + const oldInDisallowConditionalTypesContext = this.state.inDisallowConditionalTypesContext; + this.state.inDisallowConditionalTypesContext = false; + try { + return cb(); + } finally { + this.state.inDisallowConditionalTypesContext = oldInDisallowConditionalTypesContext; + } + } + tsEatThenParseType(token) { + if (this.match(token)) { + return this.tsNextThenParseType(); + } + } + tsExpectThenParseType(token) { + return this.tsInType(() => { + this.expect(token); + return this.tsParseType(); + }); + } + tsNextThenParseType() { + return this.tsInType(() => { + this.next(); + return this.tsParseType(); + }); + } + tsParseEnumMember() { + const node = this.startNode(); + node.id = this.match(134) ? super.parseStringLiteral(this.state.value) : this.parseIdentifier(true); + if (this.eat(29)) { + node.initializer = super.parseMaybeAssignAllowIn(); + } + return this.finishNode(node, "TSEnumMember"); + } + tsParseEnumDeclaration(node, properties = {}) { + if (properties.const) node.const = true; + if (properties.declare) node.declare = true; + this.expectContextual(126); + node.id = this.parseIdentifier(); + this.checkIdentifier(node.id, node.const ? 8971 : 8459); + this.expect(5); + node.members = this.tsParseDelimitedList("EnumMembers", this.tsParseEnumMember.bind(this)); + this.expect(8); + return this.finishNode(node, "TSEnumDeclaration"); + } + tsParseEnumBody() { + const node = this.startNode(); + this.expect(5); + node.members = this.tsParseDelimitedList("EnumMembers", this.tsParseEnumMember.bind(this)); + this.expect(8); + return this.finishNode(node, "TSEnumBody"); + } + tsParseModuleBlock() { + const node = this.startNode(); + this.scope.enter(0); + this.expect(5); + super.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.checkIdentifier(node.id, 1024); + } + if (this.eat(16)) { + const inner = this.startNode(); + this.tsParseModuleOrNamespaceDeclaration(inner, true); + node.body = inner; + } else { + this.scope.enter(1024); + this.prodParam.enter(0); + node.body = this.tsParseModuleBlock(); + this.prodParam.exit(); + this.scope.exit(); + } + return this.finishNode(node, "TSModuleDeclaration"); + } + tsParseAmbientExternalModuleDeclaration(node) { + if (this.isContextual(112)) { + node.kind = "global"; + node.global = true; + node.id = this.parseIdentifier(); + } else if (this.match(134)) { + node.kind = "module"; + node.id = super.parseStringLiteral(this.state.value); + } else { + this.unexpected(); + } + if (this.match(5)) { + this.scope.enter(1024); + this.prodParam.enter(0); + node.body = this.tsParseModuleBlock(); + this.prodParam.exit(); + this.scope.exit(); + } else { + this.semicolon(); + } + return this.finishNode(node, "TSModuleDeclaration"); + } + tsParseImportEqualsDeclaration(node, maybeDefaultIdentifier, isExport) { + node.isExport = isExport || false; + node.id = maybeDefaultIdentifier || this.parseIdentifier(); + this.checkIdentifier(node.id, 4096); + this.expect(29); + const moduleReference = this.tsParseModuleReference(); + if (node.importKind === "type" && moduleReference.type !== "TSExternalModuleReference") { + this.raise(TSErrors.ImportAliasHasImportType, moduleReference); + } + node.moduleReference = moduleReference; + this.semicolon(); + return this.finishNode(node, "TSImportEqualsDeclaration"); + } + tsIsExternalModuleReference() { + return this.isContextual(119) && this.lookaheadCharCode() === 40; + } + tsParseModuleReference() { + return this.tsIsExternalModuleReference() ? this.tsParseExternalModuleReference() : this.tsParseEntityName(0); + } + tsParseExternalModuleReference() { + const node = this.startNode(); + this.expectContextual(119); + this.expect(10); + if (!this.match(134)) { + this.unexpected(); + } + node.expression = super.parseExprAtom(); + this.expect(11); + this.sawUnambiguousESM = true; + 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; + 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; + } + this.state = state; + } + tsTryParseDeclare(node) { + if (this.isLineTerminator()) { + return; + } + const startType = this.state.type; + return this.tsInAmbientContext(() => { + switch (startType) { + case 68: + node.declare = true; + return super.parseFunctionStatement(node, false, false); + case 80: + node.declare = true; + return this.parseClass(node, true, false); + case 126: + return this.tsParseEnumDeclaration(node, { + declare: true + }); + case 112: + return this.tsParseAmbientExternalModuleDeclaration(node); + case 100: + if (this.state.containsEsc) { + return; + } + case 75: + case 74: + if (!this.match(75) || !this.isLookaheadContextual("enum")) { + node.declare = true; + return this.parseVarStatement(node, this.state.value, true); + } + this.expect(75); + return this.tsParseEnumDeclaration(node, { + const: true, + declare: true + }); + case 107: + if (this.isUsing()) { + this.raise(TSErrors.InvalidModifierOnUsingDeclaration, this.state.startLoc, "declare"); + node.declare = true; + return this.parseVarStatement(node, "using", true); + } + break; + case 96: + if (this.isAwaitUsing()) { + this.raise(TSErrors.InvalidModifierOnAwaitUsingDeclaration, this.state.startLoc, "declare"); + node.declare = true; + this.next(); + return this.parseVarStatement(node, "await using", true); + } + break; + case 129: + { + const result = this.tsParseInterfaceDeclaration(node, { + declare: true + }); + if (result) return result; + } + default: + if (tokenIsIdentifier(startType)) { + return this.tsParseDeclaration(node, this.state.type, true, null); + } + } + }); + } + tsTryParseExportDeclaration() { + return this.tsParseDeclaration(this.startNode(), this.state.type, true, null); + } + tsParseDeclaration(node, type, next, decorators) { + switch (type) { + case 124: + if (this.tsCheckLineTerminator(next) && (this.match(80) || tokenIsIdentifier(this.state.type))) { + return this.tsParseAbstractDeclaration(node, decorators); + } + break; + case 127: + if (this.tsCheckLineTerminator(next)) { + if (this.match(134)) { + return this.tsParseAmbientExternalModuleDeclaration(node); + } else if (tokenIsIdentifier(this.state.type)) { + node.kind = "module"; + return this.tsParseModuleOrNamespaceDeclaration(node); + } + } + break; + case 128: + if (this.tsCheckLineTerminator(next) && tokenIsIdentifier(this.state.type)) { + node.kind = "namespace"; + return this.tsParseModuleOrNamespaceDeclaration(node); + } + break; + case 130: + 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(startLoc) { + if (!this.match(47)) return; + const oldMaybeInArrowParameters = this.state.maybeInArrowParameters; + this.state.maybeInArrowParameters = true; + const res = this.tsTryParseAndCatch(() => { + const node = this.startNodeAt(startLoc); + node.typeParameters = this.tsParseTypeParameters(this.tsParseConstModifier); + super.parseFunctionParams(node); + node.returnType = this.tsTryParseTypeOrTypePredicateAnnotation(); + this.expect(19); + return node; + }); + this.state.maybeInArrowParameters = oldMaybeInArrowParameters; + if (!res) return; + return super.parseArrowExpression(res, null, true); + } + tsParseTypeArgumentsInExpression() { + if (this.reScan_lt() !== 47) return; + return this.tsParseTypeArguments(); + } + tsParseTypeArguments() { + const node = this.startNode(); + node.params = this.tsInType(() => this.tsInTopLevelContext(() => { + this.expect(47); + return this.tsParseDelimitedList("TypeParametersOrArguments", this.tsParseType.bind(this)); + })); + if (node.params.length === 0) { + this.raise(TSErrors.EmptyTypeArguments, node); + } else if (!this.state.inType && this.curContext() === types.brace) { + this.reScan_lt_gt(); + } + this.expect(48); + return this.finishNode(node, "TSTypeParameterInstantiation"); + } + tsIsDeclarationStart() { + return tokenIsTSDeclarationStart(this.state.type); + } + isExportDefaultSpecifier() { + if (this.tsIsDeclarationStart()) return false; + return super.isExportDefaultSpecifier(); + } + parseBindingElement(flags, decorators) { + const startLoc = decorators.length ? decorators[0].loc.start : this.state.startLoc; + const modified = {}; + this.tsParseModifiers({ + allowedModifiers: ["public", "private", "protected", "override", "readonly"] + }, modified); + const accessibility = modified.accessibility; + const override = modified.override; + const readonly = modified.readonly; + if (!(flags & 4) && (accessibility || readonly || override)) { + this.raise(TSErrors.UnexpectedParameterModifier, startLoc); + } + const left = this.parseMaybeDefault(); + if (flags & 2) { + this.parseFunctionParamType(left); + } + const elt = this.parseMaybeDefault(left.loc.start, left); + if (accessibility || readonly || override) { + const pp = this.startNodeAt(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, pp); + } + pp.parameter = elt; + return this.finishNode(pp, "TSParameterProperty"); + } + if (decorators.length) { + left.decorators = decorators; + } + return elt; + } + isSimpleParameter(node) { + return node.type === "TSParameterProperty" && super.isSimpleParameter(node.parameter) || super.isSimpleParameter(node); + } + tsDisallowOptionalPattern(node) { + for (const param of node.params) { + if (param.type !== "Identifier" && param.optional && !this.state.isAmbientContext) { + this.raise(TSErrors.PatternIsOptional, param); + } + } + } + setArrowFunctionParameters(node, params, trailingCommaLoc) { + super.setArrowFunctionParameters(node, params, trailingCommaLoc); + this.tsDisallowOptionalPattern(node); + } + 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()) { + return this.finishNode(node, bodilessType); + } + if (bodilessType === "TSDeclareFunction" && this.state.isAmbientContext) { + this.raise(TSErrors.DeclareFunctionHasImplementation, node); + if (node.declare) { + return super.parseFunctionBodyAndFinish(node, bodilessType, isMethod); + } + } + this.tsDisallowOptionalPattern(node); + return super.parseFunctionBodyAndFinish(node, type, isMethod); + } + registerFunctionStatementId(node) { + if (!node.body && node.id) { + this.checkIdentifier(node.id, 1024); + } else { + super.registerFunctionStatementId(node); + } + } + tsCheckForInvalidTypeCasts(items) { + items.forEach(node => { + if ((node == null ? void 0 : node.type) === "TSTypeCastExpression") { + this.raise(TSErrors.UnexpectedTypeAnnotation, node.typeAnnotation); + } + }); + } + toReferencedList(exprList, isInParens) { + this.tsCheckForInvalidTypeCasts(exprList); + return exprList; + } + parseArrayLike(close, isTuple, refExpressionErrors) { + const node = super.parseArrayLike(close, isTuple, refExpressionErrors); + if (node.type === "ArrayExpression") { + this.tsCheckForInvalidTypeCasts(node.elements); + } + return node; + } + parseSubscript(base, startLoc, noCalls, state) { + if (!this.hasPrecedingLineBreak() && this.match(35)) { + this.state.canStartJSXElement = false; + this.next(); + const nonNullExpression = this.startNodeAt(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(startLoc); + if (asyncArrowFn) { + state.stop = true; + return asyncArrowFn; + } + } + const typeArguments = this.tsParseTypeArgumentsInExpression(); + if (!typeArguments) return; + if (isOptionalCall && !this.match(10)) { + missingParenErrorLoc = this.state.curPosition(); + return; + } + if (tokenIsTemplate(this.state.type)) { + const result = super.parseTaggedTemplateExpression(base, startLoc, state); + result.typeParameters = typeArguments; + return result; + } + if (!noCalls && this.eat(10)) { + const node = this.startNodeAt(startLoc); + node.callee = base; + node.arguments = this.parseCallExpressionArguments(); + this.tsCheckForInvalidTypeCasts(node.arguments); + node.typeParameters = typeArguments; + if (state.optionalChainMember) { + node.optional = isOptionalCall; + } + return this.finishCallExpression(node, state.optionalChainMember); + } + const tokenType = this.state.type; + if (tokenType === 48 || tokenType === 52 || tokenType !== 10 && tokenType !== 93 && tokenType !== 120 && tokenCanStartExpression(tokenType) && !this.hasPrecedingLineBreak()) { + return; + } + const node = this.startNodeAt(startLoc); + node.expression = base; + node.typeParameters = typeArguments; + return this.finishNode(node, "TSInstantiationExpression"); + }); + if (missingParenErrorLoc) { + this.unexpected(missingParenErrorLoc, 10); + } + if (result) { + if (result.type === "TSInstantiationExpression") { + if (this.match(16) || this.match(18) && this.lookaheadCharCode() !== 40) { + this.raise(TSErrors.InvalidPropertyAccessAfterInstantiationExpression, this.state.startLoc); + } + if (!this.match(16) && !this.match(18)) { + result.expression = super.stopParseSubscript(base, state); + } + } + return result; + } + } + return super.parseSubscript(base, startLoc, noCalls, state); + } + parseNewCallee(node) { + var _callee$extra; + super.parseNewCallee(node); + const { + callee + } = node; + if (callee.type === "TSInstantiationExpression" && !((_callee$extra = callee.extra) != null && _callee$extra.parenthesized)) { + node.typeParameters = callee.typeParameters; + node.callee = callee.expression; + } + } + parseExprOp(left, leftStartLoc, minPrec) { + let isSatisfies; + if (tokenOperatorPrecedence(58) > minPrec && !this.hasPrecedingLineBreak() && (this.isContextual(93) || (isSatisfies = this.isContextual(120)))) { + const node = this.startNodeAt(leftStartLoc); + node.expression = left; + node.typeAnnotation = this.tsInType(() => { + this.next(); + if (this.match(75)) { + if (isSatisfies) { + this.raise(Errors.UnexpectedKeyword, this.state.startLoc, { + keyword: "const" + }); + } + return this.tsParseTypeReference(); + } + return this.tsParseType(); + }); + this.finishNode(node, isSatisfies ? "TSSatisfiesExpression" : "TSAsExpression"); + this.reScan_lt_gt(); + return this.parseExprOp(node, leftStartLoc, minPrec); + } + return super.parseExprOp(left, leftStartLoc, minPrec); + } + checkReservedWord(word, startLoc, checkKeywords, isBinding) { + if (!this.state.isAmbientContext) { + super.checkReservedWord(word, startLoc, checkKeywords, isBinding); + } + } + checkImportReflection(node) { + super.checkImportReflection(node); + if (node.module && node.importKind !== "value") { + this.raise(TSErrors.ImportReflectionHasImportType, node.specifiers[0].loc.start); + } + } + checkDuplicateExports() {} + isPotentialImportPhase(isExport) { + if (super.isPotentialImportPhase(isExport)) return true; + if (this.isContextual(130)) { + const ch = this.lookaheadCharCode(); + return isExport ? ch === 123 || ch === 42 : ch !== 61; + } + return !isExport && this.isContextual(87); + } + applyImportPhase(node, isExport, phase, loc) { + super.applyImportPhase(node, isExport, phase, loc); + if (isExport) { + node.exportKind = phase === "type" ? "type" : "value"; + } else { + node.importKind = phase === "type" || phase === "typeof" ? phase : "value"; + } + } + parseImport(node) { + if (this.match(134)) { + node.importKind = "value"; + return super.parseImport(node); + } + let importNode; + if (tokenIsIdentifier(this.state.type) && this.lookaheadCharCode() === 61) { + node.importKind = "value"; + return this.tsParseImportEqualsDeclaration(node); + } else if (this.isContextual(130)) { + const maybeDefaultIdentifier = this.parseMaybeImportPhase(node, false); + if (this.lookaheadCharCode() === 61) { + return this.tsParseImportEqualsDeclaration(node, maybeDefaultIdentifier); + } else { + importNode = super.parseImportSpecifiersAndAfter(node, maybeDefaultIdentifier); + } + } else { + importNode = super.parseImport(node); + } + if (importNode.importKind === "type" && importNode.specifiers.length > 1 && importNode.specifiers[0].type === "ImportDefaultSpecifier") { + this.raise(TSErrors.TypeImportCannotSpecifyDefaultAndNamed, importNode); + } + return importNode; + } + parseExport(node, decorators) { + if (this.match(83)) { + const nodeImportEquals = node; + this.next(); + let maybeDefaultIdentifier = null; + if (this.isContextual(130) && this.isPotentialImportPhase(false)) { + maybeDefaultIdentifier = this.parseMaybeImportPhase(nodeImportEquals, false); + } else { + nodeImportEquals.importKind = "value"; + } + const declaration = this.tsParseImportEqualsDeclaration(nodeImportEquals, maybeDefaultIdentifier, true); + return declaration; + } else if (this.eat(29)) { + const assign = node; + assign.expression = super.parseExpression(); + this.semicolon(); + this.sawUnambiguousESM = true; + return this.finishNode(assign, "TSExportAssignment"); + } else if (this.eatContextual(93)) { + const decl = node; + this.expectContextual(128); + decl.id = this.parseIdentifier(); + this.semicolon(); + return this.finishNode(decl, "TSNamespaceExportDeclaration"); + } else { + return super.parseExport(node, decorators); + } + } + isAbstractClass() { + return this.isContextual(124) && this.isLookaheadContextual("class"); + } + parseExportDefaultExpression() { + if (this.isAbstractClass()) { + const cls = this.startNode(); + this.next(); + cls.abstract = true; + return this.parseClass(cls, true, true); + } + if (this.match(129)) { + const result = this.tsParseInterfaceDeclaration(this.startNode()); + if (result) return result; + } + return super.parseExportDefaultExpression(); + } + parseVarStatement(node, kind, allowMissingInitializer = false) { + const { + isAmbientContext + } = this.state; + const declaration = super.parseVarStatement(node, kind, allowMissingInitializer || isAmbientContext); + if (!isAmbientContext) return declaration; + if (!node.declare && (kind === "using" || kind === "await using")) { + this.raiseOverwrite(TSErrors.UsingDeclarationInAmbientContext, node, kind); + return declaration; + } + for (const { + id, + init + } of declaration.declarations) { + if (!init) continue; + if (kind === "var" || kind === "let" || !!id.typeAnnotation) { + this.raise(TSErrors.InitializerNotAllowedInAmbientContext, init); + } else if (!isValidAmbientConstInitializer(init, this.hasPlugin("estree"))) { + this.raise(TSErrors.ConstInitializerMustBeStringOrNumericLiteralOrLiteralEnumReference, init); + } + } + return declaration; + } + parseStatementContent(flags, decorators) { + if (!this.state.containsEsc) { + switch (this.state.type) { + case 75: + { + if (this.isLookaheadContextual("enum")) { + const node = this.startNode(); + this.expect(75); + return this.tsParseEnumDeclaration(node, { + const: true + }); + } + break; + } + case 124: + case 125: + { + if (this.nextTokenIsIdentifierAndNotTSRelationalOperatorOnSameLine()) { + const token = this.state.type; + const node = this.startNode(); + this.next(); + const declaration = token === 125 ? this.tsTryParseDeclare(node) : this.tsParseAbstractDeclaration(node, decorators); + if (declaration) { + if (token === 125) { + declaration.declare = true; + } + return declaration; + } else { + node.expression = this.createIdentifier(this.startNodeAt(node.loc.start), token === 125 ? "declare" : "abstract"); + this.semicolon(false); + return this.finishNode(node, "ExpressionStatement"); + } + } + break; + } + case 126: + return this.tsParseEnumDeclaration(this.startNode()); + case 112: + { + const nextCh = this.lookaheadCharCode(); + if (nextCh === 123) { + const node = this.startNode(); + return this.tsParseAmbientExternalModuleDeclaration(node); + } + break; + } + case 129: + { + const result = this.tsParseInterfaceDeclaration(this.startNode()); + if (result) return result; + break; + } + case 127: + { + if (this.nextTokenIsIdentifierOrStringLiteralOnSameLine()) { + const node = this.startNode(); + this.next(); + return this.tsParseDeclaration(node, 127, false, decorators); + } + break; + } + case 128: + { + if (this.nextTokenIsIdentifierOnSameLine()) { + const node = this.startNode(); + this.next(); + return this.tsParseDeclaration(node, 128, false, decorators); + } + break; + } + case 130: + { + if (this.nextTokenIsIdentifierOnSameLine()) { + const node = this.startNode(); + this.next(); + return this.tsParseTypeAliasDeclaration(node); + } + break; + } + } + } + return super.parseStatementContent(flags, decorators); + } + 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(106) && this.lookaheadCharCode() === 123; + } + parseClassMember(classBody, member, state) { + const modifiers = ["declare", "private", "public", "protected", "override", "abstract", "readonly", "static"]; + this.tsParseModifiers({ + allowedModifiers: modifiers, + disallowedModifiers: ["in", "out"], + stopOnStartOfClassStaticBlock: true, + errorTemplate: TSErrors.InvalidModifierOnTypeParameterPositions + }, member); + const callParseClassMemberWithIsStatic = () => { + if (this.tsIsStartOfStaticBlocks()) { + this.next(); + this.next(); + if (this.tsHasSomeModifiers(member, modifiers)) { + this.raise(TSErrors.StaticBlockCannotHaveModifier, this.state.curPosition()); + } + super.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, member); + } + if (member.accessibility) { + this.raise(TSErrors.IndexSignatureHasAccessibility, member, { + modifier: member.accessibility + }); + } + if (member.declare) { + this.raise(TSErrors.IndexSignatureHasDeclare, member); + } + if (member.override) { + this.raise(TSErrors.IndexSignatureHasOverride, member); + } + return; + } + if (!this.state.inAbstractClass && member.abstract) { + this.raise(TSErrors.NonAbstractClassHasAbstractMethod, member); + } + if (member.override) { + if (!state.hadSuperClass) { + this.raise(TSErrors.OverrideNotInSubClass, 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, methodOrProp); + } + if (methodOrProp.declare && this.match(10)) { + this.raise(TSErrors.ClassMethodHasDeclare, methodOrProp); + } + } + shouldParseExportDeclaration() { + if (this.tsIsDeclarationStart()) return true; + return super.shouldParseExportDeclaration(); + } + parseConditional(expr, 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; + } + } + return super.parseConditional(expr, startLoc, refExpressionErrors); + } + parseParenItem(node, startLoc) { + const newNode = super.parseParenItem(node, startLoc); + if (this.eat(17)) { + newNode.optional = true; + this.resetEndLocation(node); + } + if (this.match(14)) { + const typeCastNode = this.startNodeAt(startLoc); + typeCastNode.expression = node; + typeCastNode.typeAnnotation = this.tsParseTypeAnnotation(); + return this.finishNode(typeCastNode, "TSTypeCastExpression"); + } + return node; + } + parseExportDeclaration(node) { + if (!this.state.isAmbientContext && this.isContextual(125)) { + return this.tsInAmbientContext(() => this.parseExportDeclaration(node)); + } + const startLoc = this.state.startLoc; + const isDeclare = this.eatContextual(125); + if (isDeclare && (this.isContextual(125) || !this.shouldParseExportDeclaration())) { + throw this.raise(TSErrors.ExpectedAmbientAfterExportDeclare, this.state.startLoc); + } + const isIdentifier = tokenIsIdentifier(this.state.type); + const declaration = isIdentifier && this.tsTryParseExportDeclaration() || super.parseExportDeclaration(node); + if (!declaration) return null; + if (declaration.type === "TSInterfaceDeclaration" || declaration.type === "TSTypeAliasDeclaration" || isDeclare) { + node.exportKind = "type"; + } + if (isDeclare && declaration.type !== "TSImportEqualsDeclaration") { + this.resetStartLocation(declaration, startLoc); + declaration.declare = true; + } + return declaration; + } + parseClassId(node, isStatement, optionalId, bindingType) { + if ((!isStatement || optionalId) && this.isContextual(113)) { + return; + } + super.parseClassId(node, isStatement, optionalId, node.declare ? 1024 : 8331); + const typeParameters = this.tsTryParseTypeParameters(this.tsParseInOutConstModifiers); + if (typeParameters) node.typeParameters = typeParameters; + } + parseClassPropertyAnnotation(node) { + if (!node.optional) { + if (this.eat(35)) { + node.definite = true; + } else if (this.eat(17)) { + node.optional = true; + } + } + const type = this.tsTryParseTypeAnnotation(); + if (type) node.typeAnnotation = type; + } + parseClassProperty(node) { + this.parseClassPropertyAnnotation(node); + if (this.state.isAmbientContext && !(node.readonly && !node.typeAnnotation) && this.match(29)) { + this.raise(TSErrors.DeclareClassFieldHasInitializer, this.state.startLoc); + } + if (node.abstract && this.match(29)) { + const { + key + } = node; + this.raise(TSErrors.AbstractPropertyHasInitializer, this.state.startLoc, { + propertyName: key.type === "Identifier" && !node.computed ? key.name : `[${this.input.slice(this.offsetToSourcePos(key.start), this.offsetToSourcePos(key.end))}]` + }); + } + return super.parseClassProperty(node); + } + parseClassPrivateProperty(node) { + if (node.abstract) { + this.raise(TSErrors.PrivateElementHasAbstract, node); + } + if (node.accessibility) { + this.raise(TSErrors.PrivateElementHasAccessibility, node, { + modifier: node.accessibility + }); + } + this.parseClassPropertyAnnotation(node); + return super.parseClassPrivateProperty(node); + } + parseClassAccessorProperty(node) { + this.parseClassPropertyAnnotation(node); + if (node.optional) { + this.raise(TSErrors.AccessorCannotBeOptional, node); + } + return super.parseClassAccessorProperty(node); + } + pushClassMethod(classBody, method, isGenerator, isAsync, isConstructor, allowsDirectSuper) { + const typeParameters = this.tsTryParseTypeParameters(this.tsParseConstModifier); + if (typeParameters && isConstructor) { + this.raise(TSErrors.ConstructorHasTypeParameters, typeParameters); + } + const { + declare = false, + kind + } = method; + if (declare && (kind === "get" || kind === "set")) { + this.raise(TSErrors.DeclareAccessor, method, { + kind + }); + } + if (typeParameters) method.typeParameters = typeParameters; + super.pushClassMethod(classBody, method, isGenerator, isAsync, isConstructor, allowsDirectSuper); + } + pushClassPrivateMethod(classBody, method, isGenerator, isAsync) { + const typeParameters = this.tsTryParseTypeParameters(this.tsParseConstModifier); + 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 == null) { + return; + } + super.declareClassPrivateMethodInScope(node, kind); + } + parseClassSuper(node) { + super.parseClassSuper(node); + if (node.superClass) { + if (node.superClass.type === "TSInstantiationExpression") { + const tsInstantiationExpression = node.superClass; + const superClass = tsInstantiationExpression.expression; + this.takeSurroundingComments(superClass, superClass.start, superClass.end); + const superTypeArguments = tsInstantiationExpression.typeParameters; + this.takeSurroundingComments(superTypeArguments, superTypeArguments.start, superTypeArguments.end); + node.superClass = superClass; + node.superTypeParameters = superTypeArguments; + } else if (this.match(47) || this.match(51)) { + node.superTypeParameters = this.tsParseTypeArgumentsInExpression(); + } + } + if (this.eatContextual(113)) { + node.implements = this.tsParseHeritageClause("implements"); + } + } + parseObjPropValue(prop, startLoc, isGenerator, isAsync, isPattern, isAccessor, refExpressionErrors) { + const typeParameters = this.tsTryParseTypeParameters(this.tsParseConstModifier); + if (typeParameters) prop.typeParameters = typeParameters; + return super.parseObjPropValue(prop, startLoc, isGenerator, isAsync, isPattern, isAccessor, refExpressionErrors); + } + parseFunctionParams(node, isConstructor) { + const typeParameters = this.tsTryParseTypeParameters(this.tsParseConstModifier); + if (typeParameters) node.typeParameters = typeParameters; + super.parseFunctionParams(node, isConstructor); + } + 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(refExpressionErrors, afterLeftParse) { + var _jsx, _jsx2, _typeCast, _jsx3, _typeCast2; + let state; + let jsx; + let typeCast; + if (this.hasPlugin("jsx") && (this.match(143) || 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)) { + return super.parseMaybeAssign(refExpressionErrors, afterLeftParse); + } + if (!state || state === this.state) state = this.state.clone(); + let typeParameters; + const arrow = this.tryParse(abort => { + var _expr$extra, _typeParameters; + typeParameters = this.tsParseTypeParameters(this.tsParseConstModifier); + const expr = super.parseMaybeAssign(refExpressionErrors, afterLeftParse); + if (expr.type !== "ArrowFunctionExpression" || (_expr$extra = expr.extra) != null && _expr$extra.parenthesized) { + abort(); + } + if (((_typeParameters = typeParameters) == null ? void 0 : _typeParameters.params.length) !== 0) { + this.resetStartLocationFromNode(expr, typeParameters); + } + expr.typeParameters = typeParameters; + return expr; + }, state); + if (!arrow.error && !arrow.aborted) { + if (typeParameters) this.reportReservedArrowTypeParam(typeParameters); + return arrow.node; + } + if (!jsx) { + assert(!this.hasPlugin("jsx")); + typeCast = this.tryParse(() => super.parseMaybeAssign(refExpressionErrors, afterLeftParse), state); + if (!typeCast.error) return typeCast.node; + } + if ((_jsx2 = jsx) != null && _jsx2.node) { + this.state = jsx.failState; + return jsx.node; + } + if (arrow.node) { + this.state = arrow.failState; + if (typeParameters) this.reportReservedArrowTypeParam(typeParameters); + return arrow.node; + } + if ((_typeCast = typeCast) != null && _typeCast.node) { + this.state = typeCast.failState; + return typeCast.node; + } + throw ((_jsx3 = jsx) == null ? void 0 : _jsx3.error) || arrow.error || ((_typeCast2 = typeCast) == null ? void 0 : _typeCast2.error); + } + reportReservedArrowTypeParam(node) { + var _node$extra2; + if (node.params.length === 1 && !node.params[0].constraint && !((_node$extra2 = node.extra) != null && _node$extra2.trailingComma) && this.getPluginOption("typescript", "disallowAmbiguousJSXLike")) { + this.raise(TSErrors.ReservedArrowTypeParam, node); + } + } + parseMaybeUnary(refExpressionErrors, sawUnary) { + if (!this.hasPlugin("jsx") && this.match(47)) { + return this.tsParseTypeAssertion(); + } + return super.parseMaybeUnary(refExpressionErrors, sawUnary); + } + 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); + } + parseFunctionParamType(param) { + if (this.eat(17)) { + 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 "ParenthesizedExpression": + this.toAssignableParenthesizedExpression(node, isLHS); + break; + case "TSAsExpression": + case "TSSatisfiesExpression": + case "TSNonNullExpression": + case "TSTypeAssertion": + if (isLHS) { + this.expressionScope.recordArrowParameterBindingError(TSErrors.UnexpectedTypeCastInParameter, node); + } else { + this.raise(TSErrors.UnexpectedTypeCastInParameter, node); + } + this.toAssignable(node.expression, isLHS); + break; + case "AssignmentExpression": + if (!isLHS && node.left.type === "TSTypeCastExpression") { + node.left = this.typeCastToParameter(node.left); + } + default: + super.toAssignable(node, isLHS); + } + } + toAssignableParenthesizedExpression(node, isLHS) { + switch (node.expression.type) { + case "TSAsExpression": + case "TSSatisfiesExpression": + case "TSNonNullExpression": + case "TSTypeAssertion": + case "ParenthesizedExpression": + this.toAssignable(node.expression, isLHS); + break; + default: + super.toAssignable(node, isLHS); + } + } + checkToRestConversion(node, allowPattern) { + switch (node.type) { + case "TSAsExpression": + case "TSSatisfiesExpression": + case "TSTypeAssertion": + case "TSNonNullExpression": + this.checkToRestConversion(node.expression, false); + break; + default: + super.checkToRestConversion(node, allowPattern); + } + } + isValidLVal(type, disallowCallExpression, isUnparenthesizedInAssign, binding) { + switch (type) { + case "TSTypeCastExpression": + return true; + case "TSParameterProperty": + return "parameter"; + case "TSNonNullExpression": + return "expression"; + case "TSAsExpression": + case "TSSatisfiesExpression": + case "TSTypeAssertion": + return (binding !== 64 || !isUnparenthesizedInAssign) && ["expression", true]; + default: + return super.isValidLVal(type, disallowCallExpression, isUnparenthesizedInAssign, binding); + } + } + parseBindingAtom() { + if (this.state.type === 78) { + return this.parseIdentifier(true); + } + return super.parseBindingAtom(); + } + parseMaybeDecoratorArguments(expr, startLoc) { + if (this.match(47) || this.match(51)) { + const typeArguments = this.tsParseTypeArgumentsInExpression(); + if (this.match(10)) { + const call = super.parseMaybeDecoratorArguments(expr, startLoc); + call.typeParameters = typeArguments; + return call; + } + this.unexpected(null, 10); + } + return super.parseMaybeDecoratorArguments(expr, startLoc); + } + checkCommaAfterRest(close) { + if (this.state.isAmbientContext && this.match(12) && this.lookaheadCharCode() === close) { + this.next(); + return false; + } + return super.checkCommaAfterRest(close); + } + isClassMethod() { + return this.match(47) || super.isClassMethod(); + } + isClassProperty() { + return this.match(35) || this.match(14) || super.isClassProperty(); + } + parseMaybeDefault(startLoc, left) { + const node = super.parseMaybeDefault(startLoc, left); + if (node.type === "AssignmentPattern" && node.typeAnnotation && node.right.start < node.typeAnnotation.start) { + this.raise(TSErrors.TypeAnnotationAfterAssign, node.typeAnnotation); + } + return node; + } + getTokenFromCode(code) { + if (this.state.inType) { + if (code === 62) { + this.finishOp(48, 1); + return; + } + if (code === 60) { + 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; + } + toAssignableListItem(exprList, index, isLHS) { + const node = exprList[index]; + if (node.type === "TSTypeCastExpression") { + exprList[index] = this.typeCastToParameter(node); + } + super.toAssignableListItem(exprList, index, isLHS); + } + 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 { + isAmbientContext: oldIsAmbientContext, + strict: oldStrict + } = this.state; + this.state.isAmbientContext = true; + this.state.strict = false; + try { + return cb(); + } finally { + this.state.isAmbientContext = oldIsAmbientContext; + this.state.strict = oldStrict; + } + } + parseClass(node, isStatement, optionalId) { + const oldInAbstractClass = this.state.inAbstractClass; + this.state.inAbstractClass = !!node.abstract; + try { + return super.parseClass(node, isStatement, optionalId); + } finally { + this.state.inAbstractClass = oldInAbstractClass; + } + } + tsParseAbstractDeclaration(node, decorators) { + if (this.match(80)) { + node.abstract = true; + return this.maybeTakeDecorators(decorators, this.parseClass(node, true, false)); + } else if (this.isContextual(129)) { + if (!this.hasFollowingLineBreak()) { + node.abstract = true; + this.raise(TSErrors.NonClassMethodPropertyHasAbstractModifier, node); + return this.tsParseInterfaceDeclaration(node); + } else { + return null; + } + } + throw this.unexpected(null, 80); + } + parseMethod(node, isGenerator, isAsync, isConstructor, allowDirectSuper, type, inClassScope) { + const method = super.parseMethod(node, isGenerator, isAsync, isConstructor, allowDirectSuper, type, inClassScope); + if (method.abstract || method.type === "TSAbstractMethodDefinition") { + const hasEstreePlugin = this.hasPlugin("estree"); + const methodFn = hasEstreePlugin ? method.value : method; + if (methodFn.body) { + const { + key + } = method; + this.raise(TSErrors.AbstractMethodHasImplementation, method, { + methodName: key.type === "Identifier" && !method.computed ? key.name : `[${this.input.slice(this.offsetToSourcePos(key.start), this.offsetToSourcePos(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, bindingType) { + if (!importedIsString && isMaybeTypeOnly) { + this.parseTypeOnlyImportExportSpecifier(specifier, true, isInTypeOnlyImport); + return this.finishNode(specifier, "ImportSpecifier"); + } + specifier.importKind = "value"; + return super.parseImportSpecifier(specifier, importedIsString, isInTypeOnlyImport, isMaybeTypeOnly, isInTypeOnlyImport ? 4098 : 4096); + } + 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 = isImport ? this.parseIdentifier() : this.parseModuleExportName(); + canParseAsKeyword = false; + } else { + rightOfAs = secondAs; + canParseAsKeyword = false; + } + } else if (tokenIsKeywordOrIdentifier(this.state.type)) { + canParseAsKeyword = false; + rightOfAs = isImport ? this.parseIdentifier() : this.parseModuleExportName(); + } else { + hasTypeSpecifier = true; + leftOfAs = firstAs; + } + } else if (tokenIsKeywordOrIdentifier(this.state.type)) { + hasTypeSpecifier = true; + if (isImport) { + leftOfAs = this.parseIdentifier(true); + if (!this.isContextual(93)) { + this.checkReservedWord(leftOfAs.name, leftOfAs.loc.start, true, true); + } + } else { + leftOfAs = this.parseModuleExportName(); + } + } + if (hasTypeSpecifier && isInTypeOnlyImportExport) { + this.raise(isImport ? TSErrors.TypeModifierIsUsedInTypeImports : TSErrors.TypeModifierIsUsedInTypeExports, 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] = this.cloneIdentifier(node[leftOfAsKey]); + } + if (isImport) { + this.checkIdentifier(node[rightOfAsKey], hasTypeSpecifier ? 4098 : 4096); + } + } + fillOptionalPropertiesForTSESLint(node) { + var _node$directive, _node$decorators, _node$optional, _node$typeAnnotation, _node$accessibility, _node$decorators2, _node$override, _node$readonly, _node$static, _node$declare, _node$returnType, _node$typeParameters, _node$optional2, _node$optional3, _node$accessibility2, _node$readonly2, _node$static2, _node$declare2, _node$definite, _node$readonly3, _node$typeAnnotation2, _node$accessibility3, _node$decorators3, _node$override2, _node$optional4, _node$id, _node$abstract, _node$declare3, _node$decorators4, _node$implements, _node$superTypeArgume, _node$typeParameters2, _node$declare4, _node$definite2, _node$const, _node$declare5, _node$computed, _node$qualifier, _node$options, _node$declare6, _node$extends, _node$optional5, _node$readonly4, _node$declare7, _node$global, _node$const2, _node$in, _node$out; + switch (node.type) { + case "ExpressionStatement": + (_node$directive = node.directive) != null ? _node$directive : node.directive = undefined; + return; + case "RestElement": + node.value = undefined; + case "Identifier": + case "ArrayPattern": + case "AssignmentPattern": + case "ObjectPattern": + (_node$decorators = node.decorators) != null ? _node$decorators : node.decorators = []; + (_node$optional = node.optional) != null ? _node$optional : node.optional = false; + (_node$typeAnnotation = node.typeAnnotation) != null ? _node$typeAnnotation : node.typeAnnotation = undefined; + return; + case "TSParameterProperty": + (_node$accessibility = node.accessibility) != null ? _node$accessibility : node.accessibility = undefined; + (_node$decorators2 = node.decorators) != null ? _node$decorators2 : node.decorators = []; + (_node$override = node.override) != null ? _node$override : node.override = false; + (_node$readonly = node.readonly) != null ? _node$readonly : node.readonly = false; + (_node$static = node.static) != null ? _node$static : node.static = false; + return; + case "TSEmptyBodyFunctionExpression": + node.body = null; + case "TSDeclareFunction": + case "FunctionDeclaration": + case "FunctionExpression": + case "ClassMethod": + case "ClassPrivateMethod": + (_node$declare = node.declare) != null ? _node$declare : node.declare = false; + (_node$returnType = node.returnType) != null ? _node$returnType : node.returnType = undefined; + (_node$typeParameters = node.typeParameters) != null ? _node$typeParameters : node.typeParameters = undefined; + return; + case "Property": + (_node$optional2 = node.optional) != null ? _node$optional2 : node.optional = false; + return; + case "TSMethodSignature": + case "TSPropertySignature": + (_node$optional3 = node.optional) != null ? _node$optional3 : node.optional = false; + case "TSIndexSignature": + (_node$accessibility2 = node.accessibility) != null ? _node$accessibility2 : node.accessibility = undefined; + (_node$readonly2 = node.readonly) != null ? _node$readonly2 : node.readonly = false; + (_node$static2 = node.static) != null ? _node$static2 : node.static = false; + return; + case "TSAbstractPropertyDefinition": + case "PropertyDefinition": + case "TSAbstractAccessorProperty": + case "AccessorProperty": + (_node$declare2 = node.declare) != null ? _node$declare2 : node.declare = false; + (_node$definite = node.definite) != null ? _node$definite : node.definite = false; + (_node$readonly3 = node.readonly) != null ? _node$readonly3 : node.readonly = false; + (_node$typeAnnotation2 = node.typeAnnotation) != null ? _node$typeAnnotation2 : node.typeAnnotation = undefined; + case "TSAbstractMethodDefinition": + case "MethodDefinition": + (_node$accessibility3 = node.accessibility) != null ? _node$accessibility3 : node.accessibility = undefined; + (_node$decorators3 = node.decorators) != null ? _node$decorators3 : node.decorators = []; + (_node$override2 = node.override) != null ? _node$override2 : node.override = false; + (_node$optional4 = node.optional) != null ? _node$optional4 : node.optional = false; + return; + case "ClassExpression": + (_node$id = node.id) != null ? _node$id : node.id = null; + case "ClassDeclaration": + (_node$abstract = node.abstract) != null ? _node$abstract : node.abstract = false; + (_node$declare3 = node.declare) != null ? _node$declare3 : node.declare = false; + (_node$decorators4 = node.decorators) != null ? _node$decorators4 : node.decorators = []; + (_node$implements = node.implements) != null ? _node$implements : node.implements = []; + (_node$superTypeArgume = node.superTypeArguments) != null ? _node$superTypeArgume : node.superTypeArguments = undefined; + (_node$typeParameters2 = node.typeParameters) != null ? _node$typeParameters2 : node.typeParameters = undefined; + return; + case "TSTypeAliasDeclaration": + case "VariableDeclaration": + (_node$declare4 = node.declare) != null ? _node$declare4 : node.declare = false; + return; + case "VariableDeclarator": + (_node$definite2 = node.definite) != null ? _node$definite2 : node.definite = false; + return; + case "TSEnumDeclaration": + (_node$const = node.const) != null ? _node$const : node.const = false; + (_node$declare5 = node.declare) != null ? _node$declare5 : node.declare = false; + return; + case "TSEnumMember": + (_node$computed = node.computed) != null ? _node$computed : node.computed = false; + return; + case "TSImportType": + (_node$qualifier = node.qualifier) != null ? _node$qualifier : node.qualifier = null; + (_node$options = node.options) != null ? _node$options : node.options = null; + return; + case "TSInterfaceDeclaration": + (_node$declare6 = node.declare) != null ? _node$declare6 : node.declare = false; + (_node$extends = node.extends) != null ? _node$extends : node.extends = []; + return; + case "TSMappedType": + (_node$optional5 = node.optional) != null ? _node$optional5 : node.optional = false; + (_node$readonly4 = node.readonly) != null ? _node$readonly4 : node.readonly = undefined; + return; + case "TSModuleDeclaration": + (_node$declare7 = node.declare) != null ? _node$declare7 : node.declare = false; + (_node$global = node.global) != null ? _node$global : node.global = node.kind === "global"; + return; + case "TSTypeParameter": + (_node$const2 = node.const) != null ? _node$const2 : node.const = false; + (_node$in = node.in) != null ? _node$in : node.in = false; + (_node$out = node.out) != null ? _node$out : node.out = false; + return; + } + } + chStartsBindingIdentifierAndNotRelationalOperator(ch, pos) { + if (isIdentifierStart(ch)) { + keywordAndTSRelationalOperator.lastIndex = pos; + if (keywordAndTSRelationalOperator.test(this.input)) { + const endCh = this.codePointAtPos(keywordAndTSRelationalOperator.lastIndex); + if (!isIdentifierChar(endCh) && endCh !== 92) { + return false; + } + } + return true; + } else if (ch === 92) { + return true; + } else { + return false; + } + } + nextTokenIsIdentifierAndNotTSRelationalOperatorOnSameLine() { + const next = this.nextTokenInLineStart(); + const nextCh = this.codePointAtPos(next); + return this.chStartsBindingIdentifierAndNotRelationalOperator(nextCh, next); + } + nextTokenIsIdentifierOrStringLiteralOnSameLine() { + const next = this.nextTokenInLineStart(); + const nextCh = this.codePointAtPos(next); + return this.chStartsBindingIdentifier(nextCh, next) || nextCh === 34 || nextCh === 39; + } +}; +function isPossiblyLiteralEnum(expression) { + if (expression.type !== "MemberExpression") return false; + const { + computed, + property + } = expression; + if (computed && property.type !== "StringLiteral" && (property.type !== "TemplateLiteral" || property.expressions.length > 0)) { + return false; + } + return isUncomputedMemberExpressionChain(expression.object); +} +function isValidAmbientConstInitializer(expression, estree) { + var _expression$extra; + const { + type + } = expression; + if ((_expression$extra = expression.extra) != null && _expression$extra.parenthesized) { + return false; + } + if (estree) { + if (type === "Literal") { + const { + value + } = expression; + if (typeof value === "string" || typeof value === "boolean") { + return true; + } + } + } else { + if (type === "StringLiteral" || type === "BooleanLiteral") { + return true; + } + } + if (isNumber(expression, estree) || isNegativeNumber(expression, estree)) { + return true; + } + if (type === "TemplateLiteral" && expression.expressions.length === 0) { + return true; + } + if (isPossiblyLiteralEnum(expression)) { + return true; + } + return false; +} +function isNumber(expression, estree) { + if (estree) { + return expression.type === "Literal" && (typeof expression.value === "number" || "bigint" in expression); + } + return expression.type === "NumericLiteral" || expression.type === "BigIntLiteral"; +} +function isNegativeNumber(expression, estree) { + if (expression.type === "UnaryExpression") { + const { + operator, + argument + } = expression; + if (operator === "-" && isNumber(argument, estree)) { + return true; + } + } + return false; +} +function isUncomputedMemberExpressionChain(expression) { + if (expression.type === "Identifier") return true; + if (expression.type !== "MemberExpression" || expression.computed) { + return false; + } + return isUncomputedMemberExpressionChain(expression.object); +} +const PlaceholderErrors = ParseErrorEnum`placeholders`({ + ClassNameIsRequired: "A class name is required.", + UnexpectedSpace: "Unexpected space in placeholder." +}); +var placeholders = superClass => class PlaceholdersParserMixin extends superClass { + parsePlaceholder(expectedNode) { + if (this.match(133)) { + const node = this.startNode(); + this.next(); + this.assertNoSpace(); + node.name = super.parseIdentifier(true); + this.assertNoSpace(); + this.expect(133); + return this.finishPlaceholder(node, expectedNode); + } + } + finishPlaceholder(node, expectedNode) { + let placeholder = node; + if (!placeholder.expectedNode || !placeholder.type) { + placeholder = this.finishNode(placeholder, "Placeholder"); + } + placeholder.expectedNode = expectedNode; + return placeholder; + } + getTokenFromCode(code) { + if (code === 37 && this.input.charCodeAt(this.state.pos + 1) === 37) { + this.finishOp(133, 2); + } else { + super.getTokenFromCode(code); + } + } + parseExprAtom(refExpressionErrors) { + return this.parsePlaceholder("Expression") || super.parseExprAtom(refExpressionErrors); + } + parseIdentifier(liberal) { + return this.parsePlaceholder("Identifier") || super.parseIdentifier(liberal); + } + checkReservedWord(word, startLoc, checkKeywords, isBinding) { + if (word !== undefined) { + super.checkReservedWord(word, startLoc, checkKeywords, isBinding); + } + } + cloneIdentifier(node) { + const cloned = super.cloneIdentifier(node); + if (cloned.type === "Placeholder") { + cloned.expectedNode = node.expectedNode; + } + return cloned; + } + cloneStringLiteral(node) { + if (node.type === "Placeholder") { + return this.cloneIdentifier(node); + } + return super.cloneStringLiteral(node); + } + parseBindingAtom() { + return this.parsePlaceholder("Pattern") || super.parseBindingAtom(); + } + isValidLVal(type, disallowCallExpression, isParenthesized, binding) { + return type === "Placeholder" || super.isValidLVal(type, disallowCallExpression, isParenthesized, binding); + } + toAssignable(node, isLHS) { + if (node && node.type === "Placeholder" && node.expectedNode === "Expression") { + node.expectedNode = "Pattern"; + } else { + super.toAssignable(node, isLHS); + } + } + chStartsBindingIdentifier(ch, pos) { + if (super.chStartsBindingIdentifier(ch, pos)) { + return true; + } + const next = this.nextTokenStart(); + if (this.input.charCodeAt(next) === 37 && this.input.charCodeAt(next + 1) === 37) { + return true; + } + return false; + } + verifyBreakContinue(node, isBreak) { + var _node$label; + if (((_node$label = node.label) == null ? void 0 : _node$label.type) === "Placeholder") return; + super.verifyBreakContinue(node, isBreak); + } + parseExpressionStatement(node, expr) { + var _expr$extra; + if (expr.type !== "Placeholder" || (_expr$extra = expr.extra) != null && _expr$extra.parenthesized) { + return super.parseExpressionStatement(node, expr); + } + if (this.match(14)) { + const stmt = node; + stmt.label = this.finishPlaceholder(expr, "Identifier"); + this.next(); + stmt.body = super.parseStatementOrSloppyAnnexBFunctionDeclaration(); + return this.finishNode(stmt, "LabeledStatement"); + } + this.semicolon(); + const stmtPlaceholder = node; + stmtPlaceholder.name = expr.name; + return this.finishPlaceholder(stmtPlaceholder, "Statement"); + } + parseBlock(allowDirectives, createNewLexicalScope, afterBlockParse) { + return this.parsePlaceholder("BlockStatement") || super.parseBlock(allowDirectives, createNewLexicalScope, afterBlockParse); + } + parseFunctionId(requireId) { + return this.parsePlaceholder("Identifier") || super.parseFunctionId(requireId); + } + parseClass(node, isStatement, optionalId) { + const type = isStatement ? "ClassDeclaration" : "ClassExpression"; + this.next(); + const oldStrict = this.state.strict; + const placeholder = this.parsePlaceholder("Identifier"); + if (placeholder) { + if (this.match(81) || this.match(133) || 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, this.state.startLoc); + } + } else { + this.parseClassId(node, isStatement, optionalId); + } + super.parseClassSuper(node); + node.body = this.parsePlaceholder("ClassBody") || super.parseClassBody(!!node.superClass, oldStrict); + return this.finishNode(node, type); + } + parseExport(node, decorators) { + const placeholder = this.parsePlaceholder("Identifier"); + if (!placeholder) return super.parseExport(node, decorators); + const node2 = node; + if (!this.isContextual(98) && !this.match(12)) { + node2.specifiers = []; + node2.source = null; + node2.declaration = this.finishPlaceholder(placeholder, "Declaration"); + return this.finishNode(node2, "ExportNamedDeclaration"); + } + this.expectPlugin("exportDefaultFrom"); + const specifier = this.startNode(); + specifier.exported = placeholder; + node2.specifiers = [this.finishNode(specifier, "ExportDefaultSpecifier")]; + return super.parseExport(node2, decorators); + } + isExportDefaultSpecifier() { + if (this.match(65)) { + const next = this.nextTokenStart(); + if (this.isUnparsedContextual(next, "from")) { + if (this.input.startsWith(tokenLabelName(133), this.nextTokenStartSince(next + 4))) { + return true; + } + } + } + return super.isExportDefaultSpecifier(); + } + maybeParseExportDefaultSpecifier(node, maybeDefaultIdentifier) { + var _specifiers; + if ((_specifiers = node.specifiers) != null && _specifiers.length) { + return true; + } + return super.maybeParseExportDefaultSpecifier(node, maybeDefaultIdentifier); + } + 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(node); + node.specifiers = []; + if (!this.isContextual(98) && !this.match(12)) { + node.source = this.finishPlaceholder(placeholder, "StringLiteral"); + this.semicolon(); + return this.finishNode(node, "ImportDeclaration"); + } + const specifier = this.startNodeAtNode(placeholder); + specifier.local = placeholder; + node.specifiers.push(this.finishNode(specifier, "ImportDefaultSpecifier")); + if (this.eat(12)) { + const hasStarImport = this.maybeParseStarImportSpecifier(node); + if (!hasStarImport) this.parseNamedImportSpecifiers(node); + } + this.expectContextual(98); + node.source = this.parseImportSource(); + this.semicolon(); + return this.finishNode(node, "ImportDeclaration"); + } + parseImportSource() { + return this.parsePlaceholder("StringLiteral") || super.parseImportSource(); + } + assertNoSpace() { + if (this.state.start > this.offsetToSourcePos(this.state.lastTokEndLoc.index)) { + this.raise(PlaceholderErrors.UnexpectedSpace, this.state.lastTokEndLoc); + } + } +}; +var v8intrinsic = superClass => class V8IntrinsicMixin 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(); + const identifier = this.createIdentifier(node, name); + this.castNodeTo(identifier, "V8IntrinsicIdentifier"); + if (this.match(10)) { + return identifier; + } + } + this.unexpected(v8IntrinsicStartLoc); + } + } + parseExprAtom(refExpressionErrors) { + return this.parseV8Intrinsic() || super.parseExprAtom(refExpressionErrors); + } +}; +const PIPELINE_PROPOSALS = ["minimal", "fsharp", "hack", "smart"]; +const TOPIC_TOKENS = ["^^", "@@", "^", "%", "#"]; +function validatePlugins(pluginsMap) { + if (pluginsMap.has("decorators")) { + if (pluginsMap.has("decorators-legacy")) { + throw new Error("Cannot use the decorators and decorators-legacy plugin together"); + } + const decoratorsBeforeExport = pluginsMap.get("decorators").decoratorsBeforeExport; + if (decoratorsBeforeExport != null && typeof decoratorsBeforeExport !== "boolean") { + throw new Error("'decoratorsBeforeExport' must be a boolean, if specified."); + } + const allowCallParenthesized = pluginsMap.get("decorators").allowCallParenthesized; + if (allowCallParenthesized != null && typeof allowCallParenthesized !== "boolean") { + throw new Error("'allowCallParenthesized' must be a boolean."); + } + } + if (pluginsMap.has("flow") && pluginsMap.has("typescript")) { + throw new Error("Cannot combine flow and typescript plugins."); + } + if (pluginsMap.has("placeholders") && pluginsMap.has("v8intrinsic")) { + throw new Error("Cannot combine placeholders and v8intrinsic plugins."); + } + if (pluginsMap.has("pipelineOperator")) { + var _pluginsMap$get2; + const proposal = pluginsMap.get("pipelineOperator").proposal; + if (!PIPELINE_PROPOSALS.includes(proposal)) { + const proposalList = PIPELINE_PROPOSALS.map(p => `"${p}"`).join(", "); + throw new Error(`"pipelineOperator" requires "proposal" option whose value must be one of: ${proposalList}.`); + } + if (proposal === "hack") { + var _pluginsMap$get; + if (pluginsMap.has("placeholders")) { + throw new Error("Cannot combine placeholders plugin and Hack-style pipes."); + } + if (pluginsMap.has("v8intrinsic")) { + throw new Error("Cannot combine v8intrinsic plugin and Hack-style pipes."); + } + const topicToken = pluginsMap.get("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: ${tokenList}.`); + } + if (topicToken === "#" && ((_pluginsMap$get = pluginsMap.get("recordAndTuple")) == null ? void 0 : _pluginsMap$get.syntaxType) === "hash") { + throw new Error(`Plugin conflict between \`["pipelineOperator", { proposal: "hack", topicToken: "#" }]\` and \`${JSON.stringify(["recordAndTuple", pluginsMap.get("recordAndTuple")])}\`.`); + } + } else if (proposal === "smart" && ((_pluginsMap$get2 = pluginsMap.get("recordAndTuple")) == null ? void 0 : _pluginsMap$get2.syntaxType) === "hash") { + throw new Error(`Plugin conflict between \`["pipelineOperator", { proposal: "smart" }]\` and \`${JSON.stringify(["recordAndTuple", pluginsMap.get("recordAndTuple")])}\`.`); + } + } + if (pluginsMap.has("moduleAttributes")) { + if (pluginsMap.has("deprecatedImportAssert") || pluginsMap.has("importAssertions")) { + throw new Error("Cannot combine importAssertions, deprecatedImportAssert and moduleAttributes plugins."); + } + const moduleAttributesVersionPluginOption = pluginsMap.get("moduleAttributes").version; + if (moduleAttributesVersionPluginOption !== "may-2020") { + throw new Error("The 'moduleAttributes' plugin requires a 'version' option," + " representing the last proposal update. Currently, the" + " only supported value is 'may-2020'."); + } + } + if (pluginsMap.has("importAssertions")) { + if (pluginsMap.has("deprecatedImportAssert")) { + throw new Error("Cannot combine importAssertions and deprecatedImportAssert plugins."); + } + } + if (pluginsMap.has("deprecatedImportAssert")) ;else if (pluginsMap.has("importAttributes") && pluginsMap.get("importAttributes").deprecatedAssertSyntax) { + pluginsMap.set("deprecatedImportAssert", {}); + } + if (pluginsMap.has("recordAndTuple")) { + const syntaxType = pluginsMap.get("recordAndTuple").syntaxType; + if (syntaxType != null) { + const RECORD_AND_TUPLE_SYNTAX_TYPES = ["hash", "bar"]; + if (!RECORD_AND_TUPLE_SYNTAX_TYPES.includes(syntaxType)) { + throw new Error("The 'syntaxType' option of the 'recordAndTuple' plugin must be one of: " + RECORD_AND_TUPLE_SYNTAX_TYPES.map(p => `'${p}'`).join(", ")); + } + } + } + if (pluginsMap.has("asyncDoExpressions") && !pluginsMap.has("doExpressions")) { + const error = new Error("'asyncDoExpressions' requires 'doExpressions', please add 'doExpressions' to parser plugins."); + error.missingPlugins = "doExpressions"; + throw error; + } + if (pluginsMap.has("optionalChainingAssign") && pluginsMap.get("optionalChainingAssign").version !== "2023-07") { + throw new Error("The 'optionalChainingAssign' plugin requires a 'version' option," + " representing the last proposal update. Currently, the" + " only supported value is '2023-07'."); + } + if (pluginsMap.has("discardBinding") && pluginsMap.get("discardBinding").syntaxType !== "void") { + throw new Error("The 'discardBinding' plugin requires a 'syntaxType' option. Currently the only supported value is 'void'."); + } +} +const mixinPlugins = { + estree, + jsx, + flow, + typescript, + v8intrinsic, + placeholders +}; +const mixinPluginNames = Object.keys(mixinPlugins); +class ExpressionParser extends LValParser { + checkProto(prop, isRecord, sawProto, refExpressionErrors) { + if (prop.type === "SpreadElement" || this.isObjectMethod(prop) || prop.computed || prop.shorthand) { + return sawProto; + } + const key = prop.key; + const name = key.type === "Identifier" ? key.name : key.value; + if (name === "__proto__") { + if (isRecord) { + this.raise(Errors.RecordNoProto, key); + return true; + } + if (sawProto) { + if (refExpressionErrors) { + if (refExpressionErrors.doubleProtoLoc === null) { + refExpressionErrors.doubleProtoLoc = key.loc.start; + } + } else { + this.raise(Errors.DuplicateProto, key); + } + } + return true; + } + return sawProto; + } + shouldExitDescending(expr, potentialArrowAt) { + return expr.type === "ArrowFunctionExpression" && this.offsetToSourcePos(expr.start) === potentialArrowAt; + } + getExpression() { + this.enterInitialScopes(); + this.nextToken(); + if (this.match(140)) { + throw this.raise(Errors.ParseExpressionEmptyInput, this.state.startLoc); + } + const expr = this.parseExpression(); + if (!this.match(140)) { + throw this.raise(Errors.ParseExpressionExpectsEOF, this.state.startLoc, { + unexpected: this.input.codePointAt(this.state.start) + }); + } + this.finalizeRemainingComments(); + expr.comments = this.comments; + expr.errors = this.state.errors; + if (this.optionFlags & 256) { + 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 startLoc = this.state.startLoc; + const expr = this.parseMaybeAssign(refExpressionErrors); + if (this.match(12)) { + const node = this.startNodeAt(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) { + refExpressionErrors.optionalParametersLoc = this.state.startLoc; + } + parseMaybeAssign(refExpressionErrors, afterLeftParse) { + const startLoc = this.state.startLoc; + const isYield = this.isContextual(108); + if (isYield) { + if (this.prodParam.hasYield) { + this.next(); + let left = this.parseYield(startLoc); + if (afterLeftParse) { + left = afterLeftParse.call(this, left, 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, startLoc); + } + if (tokenIsAssignment(this.state.type)) { + const node = this.startNodeAt(startLoc); + const operator = this.state.value; + node.operator = operator; + if (this.match(29)) { + this.toAssignable(left, true); + node.left = left; + const startIndex = startLoc.index; + if (refExpressionErrors.doubleProtoLoc != null && refExpressionErrors.doubleProtoLoc.index >= startIndex) { + refExpressionErrors.doubleProtoLoc = null; + } + if (refExpressionErrors.shorthandAssignLoc != null && refExpressionErrors.shorthandAssignLoc.index >= startIndex) { + refExpressionErrors.shorthandAssignLoc = null; + } + if (refExpressionErrors.privateKeyLoc != null && refExpressionErrors.privateKeyLoc.index >= startIndex) { + this.checkDestructuringPrivate(refExpressionErrors); + refExpressionErrors.privateKeyLoc = null; + } + if (refExpressionErrors.voidPatternLoc != null && refExpressionErrors.voidPatternLoc.index >= startIndex) { + refExpressionErrors.voidPatternLoc = null; + } + } else { + node.left = left; + } + this.next(); + node.right = this.parseMaybeAssign(); + this.checkLVal(left, this.finishNode(node, "AssignmentExpression"), undefined, undefined, undefined, undefined, operator === "||=" || operator === "&&=" || operator === "??="); + return node; + } else if (ownExpressionErrors) { + this.checkExpressionErrors(refExpressionErrors, true); + } + if (isYield) { + const { + type + } = this.state; + const startsExpr = this.hasPlugin("v8intrinsic") ? tokenCanStartExpression(type) : tokenCanStartExpression(type) && !this.match(54); + if (startsExpr && !this.isAmbiguousPrefixOrIdentifier()) { + this.raiseOverwrite(Errors.YieldNotInGeneratorFunction, startLoc); + return this.parseYield(startLoc); + } + } + return left; + } + parseMaybeConditional(refExpressionErrors) { + 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, startLoc, refExpressionErrors); + } + parseConditional(expr, startLoc, refExpressionErrors) { + if (this.eat(17)) { + const node = this.startNodeAt(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(139) ? this.parsePrivateName() : this.parseMaybeUnary(refExpressionErrors); + } + parseExprOps(refExpressionErrors) { + 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, startLoc, -1); + } + parseExprOp(left, leftStartLoc, minPrec) { + if (this.isPrivateName(left)) { + const value = this.getPrivateNameSV(left); + if (minPrec >= tokenOperatorPrecedence(58) || !this.prodParam.hasIn || !this.match(58)) { + this.raise(Errors.PrivateInExpectedIn, left, { + identifierName: 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(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(Errors.UnexpectedAwaitAfterPipelineBody, this.state.startLoc); + } + } + node.right = this.parseExprOpRightExpr(op, prec); + const finishedNode = this.finishNode(node, logical || coalesce ? "LogicalExpression" : "BinaryExpression"); + const nextOp = this.state.type; + if (coalesce && (nextOp === 41 || nextOp === 42) || logical && nextOp === 40) { + throw this.raise(Errors.MixingCoalesceWithLogical, this.state.startLoc); + } + return this.parseExprOp(finishedNode, leftStartLoc, minPrec); + } + } + return left; + } + parseExprOpRightExpr(op, prec) { + const startLoc = this.state.startLoc; + switch (op) { + case 39: + switch (this.getPluginOption("pipelineOperator", "proposal")) { + case "hack": + return this.withTopicBindingContext(() => { + return this.parseHackPipeBody(); + }); + case "fsharp": + return this.withSoloAwaitPermittingContext(() => { + return this.parseFSharpPipelineBody(prec); + }); + } + if (this.getPluginOption("pipelineOperator", "proposal") === "smart") { + return this.withTopicBindingContext(() => { + if (this.prodParam.hasYield && this.isContextual(108)) { + throw this.raise(Errors.PipeBodyIsTighter, this.state.startLoc); + } + return this.parseSmartPipelineBodyInStyle(this.parseExprOpBaseRightExpr(op, prec), startLoc); + }); + } + default: + return this.parseExprOpBaseRightExpr(op, prec); + } + } + parseExprOpBaseRightExpr(op, prec) { + const startLoc = this.state.startLoc; + return this.parseExprOp(this.parseMaybeUnaryOrPrivate(), startLoc, tokenIsRightAssociative(op) ? prec - 1 : prec); + } + parseHackPipeBody() { + var _body$extra; + const { + startLoc + } = this.state; + const body = this.parseMaybeAssign(); + const requiredParentheses = UnparenthesizedPipeBodyDescriptions.has(body.type); + if (requiredParentheses && !((_body$extra = body.extra) != null && _body$extra.parenthesized)) { + this.raise(Errors.PipeUnparenthesizedBody, startLoc, { + type: body.type + }); + } + if (!this.topicReferenceWasUsedInCurrentContext()) { + this.raise(Errors.PipeTopicUnused, startLoc); + } + return body; + } + checkExponentialAfterUnary(node) { + if (this.match(57)) { + this.raise(Errors.UnexpectedTokenUnaryExponentiation, node.argument); + } + } + parseMaybeUnary(refExpressionErrors, sawUnary) { + const startLoc = this.state.startLoc; + const isAwait = this.isContextual(96); + if (isAwait && this.recordAwaitIfAllowed()) { + this.next(); + const expr = this.parseAwait(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(Errors.StrictDelete, node); + } else if (this.hasPropertyAsPrivateName(arg)) { + this.raise(Errors.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.isAmbiguousPrefixOrIdentifier()) { + this.raiseOverwrite(Errors.AwaitNotInAsyncContext, startLoc); + return this.parseAwait(startLoc); + } + } + return expr; + } + parseUpdate(node, update, refExpressionErrors) { + if (update) { + const updateExpressionNode = node; + this.checkLVal(updateExpressionNode.argument, this.finishNode(updateExpressionNode, "UpdateExpression")); + return node; + } + 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(startLoc); + node.operator = this.state.value; + node.prefix = false; + node.argument = expr; + this.next(); + this.checkLVal(expr, expr = this.finishNode(node, "UpdateExpression")); + } + return expr; + } + parseExprSubscripts(refExpressionErrors) { + 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, startLoc); + } + parseSubscripts(base, startLoc, noCalls) { + const state = { + optionalChainMember: false, + maybeAsyncArrow: this.atPossibleAsyncArrow(base), + stop: false + }; + do { + base = this.parseSubscript(base, startLoc, noCalls, state); + state.maybeAsyncArrow = false; + } while (!state.stop); + return base; + } + parseSubscript(base, startLoc, noCalls, state) { + const { + type + } = this.state; + if (!noCalls && type === 15) { + return this.parseBind(base, startLoc, noCalls, state); + } else if (tokenIsTemplate(type)) { + return this.parseTaggedTemplateExpression(base, startLoc, state); + } + let optional = false; + if (type === 18) { + if (noCalls) { + this.raise(Errors.OptionalChainingNoNew, this.state.startLoc); + if (this.lookaheadCharCode() === 40) { + return this.stopParseSubscript(base, state); + } + } + state.optionalChainMember = optional = true; + this.next(); + } + if (!noCalls && this.match(10)) { + return this.parseCoverCallAndAsyncArrowHead(base, startLoc, state, optional); + } else { + const computed = this.eat(0); + if (computed || optional || this.eat(16)) { + return this.parseMember(base, startLoc, state, computed, optional); + } else { + return this.stopParseSubscript(base, state); + } + } + } + stopParseSubscript(base, state) { + state.stop = true; + return base; + } + parseMember(base, startLoc, state, computed, optional) { + const node = this.startNodeAt(startLoc); + node.object = base; + node.computed = computed; + if (computed) { + node.property = this.parseExpression(); + this.expect(3); + } else if (this.match(139)) { + if (base.type === "Super") { + this.raise(Errors.SuperPrivateField, 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, startLoc, noCalls, state) { + const node = this.startNodeAt(startLoc); + node.object = base; + this.next(); + node.callee = this.parseNoCallExpr(); + state.stop = true; + return this.parseSubscripts(this.finishNode(node, "BindExpression"), startLoc, noCalls); + } + parseCoverCallAndAsyncArrowHead(base, startLoc, state, optional) { + const oldMaybeInArrowParameters = this.state.maybeInArrowParameters; + let refExpressionErrors = null; + this.state.maybeInArrowParameters = true; + this.next(); + const node = this.startNodeAt(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(); + } else { + node.arguments = this.parseCallExpressionArguments(base.type !== "Super", node, refExpressionErrors); + } + let finishedNode = this.finishCallExpression(node, optionalChainMember); + if (maybeAsyncArrow && this.shouldParseAsyncArrow() && !optional) { + state.stop = true; + this.checkDestructuringPrivate(refExpressionErrors); + this.expressionScope.validateAsPattern(); + this.expressionScope.exit(); + finishedNode = this.parseAsyncArrowFromCallExpression(this.startNodeAt(startLoc), finishedNode); + } else { + if (maybeAsyncArrow) { + this.checkExpressionErrors(refExpressionErrors, true); + this.expressionScope.exit(); + } + this.toReferencedArguments(finishedNode); + } + this.state.maybeInArrowParameters = oldMaybeInArrowParameters; + return finishedNode; + } + toReferencedArguments(node, isParenthesizedExpr) { + this.toReferencedListDeep(node.arguments, isParenthesizedExpr); + } + parseTaggedTemplateExpression(base, startLoc, state) { + const node = this.startNodeAt(startLoc); + node.tag = base; + node.quasi = this.parseTemplate(true); + if (state.optionalChainMember) { + this.raise(Errors.OptionalChainingNoTemplate, 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 && this.offsetToSourcePos(base.start) === this.state.potentialArrowAt; + } + finishCallExpression(node, optional) { + if (node.callee.type === "Import") { + if (node.arguments.length === 0 || node.arguments.length > 2) { + this.raise(Errors.ImportCallArity, node); + } else { + for (const arg of node.arguments) { + if (arg.type === "SpreadElement") { + this.raise(Errors.ImportCallSpreadArgument, arg); + } + } + } + } + return this.finishNode(node, optional ? "OptionalCallExpression" : "CallExpression"); + } + parseCallExpressionArguments(allowPlaceholder, nodeForExtra, refExpressionErrors) { + const elts = []; + let first = true; + const oldInFSharpPipelineDirectBody = this.state.inFSharpPipelineDirectBody; + this.state.inFSharpPipelineDirectBody = false; + while (!this.eat(11)) { + if (first) { + first = false; + } else { + this.expect(12); + if (this.match(11)) { + if (nodeForExtra) { + this.addTrailingCommaExtraToNode(nodeForExtra); + } + this.next(); + break; + } + } + elts.push(this.parseExprListItem(11, 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 startLoc = this.state.startLoc; + return this.parseSubscripts(this.parseExprAtom(), startLoc, true); + } + parseExprAtom(refExpressionErrors) { + let node; + let decorators = null; + const { + type + } = this.state; + switch (type) { + case 79: + return this.parseSuper(); + case 83: + node = this.startNode(); + this.next(); + if (this.match(16)) { + return this.parseImportMetaPropertyOrPhaseCall(node); + } + if (this.match(10)) { + if (this.optionFlags & 512) { + return this.parseImportCall(node); + } else { + return this.finishNode(node, "Import"); + } + } else { + this.raise(Errors.UnsupportedImport, 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 135: + return this.parseNumericLiteral(this.state.value); + case 136: + return this.parseBigIntLiteral(this.state.value); + case 134: + 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 0: + { + return this.parseArrayLike(3, false, refExpressionErrors); + } + case 5: + { + return this.parseObjectLike(8, false, false, refExpressionErrors); + } + case 68: + return this.parseFunctionOrFunctionSent(); + case 26: + decorators = this.parseDecorators(); + case 80: + return this.parseClass(this.maybeTakeDecorators(decorators, this.startNode()), 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(Errors.UnsupportedBind, callee); + } + } + case 139: + { + this.raise(Errors.PrivateInExpectedIn, this.state.startLoc, { + identifierName: 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); + } + throw this.unexpected(); + } + case 47: + { + const lookaheadCh = this.input.codePointAt(this.nextTokenStart()); + if (isIdentifierStart(lookaheadCh) || lookaheadCh === 62) { + throw this.expectOnePlugin(["jsx", "flow", "typescript"]); + } + throw this.unexpected(); + } + default: + if (type === 137) { + return this.parseDecimalLiteral(this.state.value); + } else if (type === 2 || type === 1) { + return this.parseArrayLike(this.state.type === 2 ? 4 : 3, true); + } else if (type === 6 || type === 7) { + return this.parseObjectLike(this.state.type === 6 ? 9 : 8, false, true); + } + if (tokenIsIdentifier(type)) { + if (this.isContextual(127) && this.lookaheadInLineCharCode() === 123) { + 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.parseAsyncFunctionExpression(this.startNodeAtNode(id)); + } 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); + } + 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)) { + if (pipeProposal === "hack") { + if (!this.topicReferenceIsAllowedInCurrentContext()) { + this.raise(Errors.PipeTopicUnbound, startLoc); + } + this.registerTopicReference(); + return this.finishNode(node, "TopicReference"); + } else { + if (!this.topicReferenceIsAllowedInCurrentContext()) { + this.raise(Errors.PrimaryTopicNotAllowed, startLoc); + } + this.registerTopicReference(); + return this.finishNode(node, "PipelinePrimaryTopicReference"); + } + } else { + throw this.raise(Errors.PipeTopicUnconfiguredToken, startLoc, { + token: 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(Errors.PipeTopicRequiresHackPipes, startLoc); + } + } + parseAsyncArrowUnaryFunction(node) { + this.prodParam.enter(functionFlags(true, this.prodParam.hasYield)); + const params = [this.parseIdentifier()]; + this.prodParam.exit(); + if (this.hasPrecedingLineBreak()) { + this.raise(Errors.LineTerminatorBeforeArrow, this.state.curPosition()); + } + this.expect(19); + return this.parseArrowExpression(node, params, true); + } + 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(2); + 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) { + if (!(this.optionFlags & 16)) { + this.raise(Errors.SuperNotAllowed, node); + } + } else if (!this.scope.allowSuper) { + if (!(this.optionFlags & 16)) { + this.raise(Errors.UnexpectedSuper, node); + } + } + if (!this.match(10) && !this.match(0) && !this.match(16)) { + this.raise(Errors.UnsupportedSuper, node); + } + return this.finishNode(node, "Super"); + } + parsePrivateName() { + const node = this.startNode(); + const id = this.startNodeAt(createPositionWithColumnOffset(this.state.startLoc, 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(103)) { + 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(Errors.UnsupportedMetaProperty, node.property, { + target: meta.name, + onlyValidPropertyName: propertyName + }); + } + return this.finishNode(node, "MetaProperty"); + } + parseImportMetaPropertyOrPhaseCall(node) { + this.next(); + if (this.isContextual(105) || this.isContextual(97)) { + const isSource = this.isContextual(105); + this.expectPlugin(isSource ? "sourcePhaseImports" : "deferredImportEvaluation"); + this.next(); + node.phase = isSource ? "source" : "defer"; + return this.parseImportCall(node); + } else { + const id = this.createIdentifierAt(this.startNodeAtNode(node), "import", this.state.lastTokStartLoc); + if (this.isContextual(101)) { + if (!this.inModule) { + this.raise(Errors.ImportMetaOutsideModule, 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(this.offsetToSourcePos(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.startNode(); + this.addExtra(node, "raw", this.input.slice(this.offsetToSourcePos(node.start), this.state.end)); + node.pattern = value.pattern; + node.flags = value.flags; + this.next(); + return this.finishNode(node, "RegExpLiteral"); + } + 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 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 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 spreadNodeStartLoc = this.state.startLoc; + spreadStartLoc = this.state.startLoc; + exprList.push(this.parseParenItem(this.parseRestBinding(), spreadNodeStartLoc)); + if (!this.checkCommaAfterRest(41)) { + break; + } + } else { + exprList.push(this.parseMaybeAssignAllowInOrVoidPattern(11, refExpressionErrors, this.parseParenItem)); + } + } + const innerEndLoc = this.state.lastTokEndLoc; + this.expect(11); + this.state.maybeInArrowParameters = oldMaybeInArrowParameters; + this.state.inFSharpPipelineDirectBody = oldInFSharpPipelineDirectBody; + let arrowNode = this.startNodeAt(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(innerStartLoc); + val.expressions = exprList; + this.finishNode(val, "SequenceExpression"); + this.resetEndLocation(val, innerEndLoc); + } else { + val = exprList[0]; + } + return this.wrapParenthesis(startLoc, val); + } + wrapParenthesis(startLoc, expression) { + if (!(this.optionFlags & 1024)) { + this.addExtra(expression, "parenthesized", true); + this.addExtra(expression, "parenStart", startLoc.index); + this.takeSurroundingComments(expression, startLoc.index, this.state.lastTokEndLoc.index); + return expression; + } + const parenExpression = this.startNodeAt(startLoc); + parenExpression.expression = expression; + return this.finishNode(parenExpression, "ParenthesizedExpression"); + } + shouldParseArrow(params) { + return !this.canInsertSemicolon(); + } + parseArrow(node) { + if (this.eat(19)) { + return node; + } + } + parseParenItem(node, 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.allowNewTarget) { + this.raise(Errors.UnexpectedNewTarget, metaProp); + } + return metaProp; + } + return this.parseNew(node); + } + parseNew(node) { + this.parseNewCallee(node); + if (this.eat(10)) { + const args = this.parseExprList(11); + this.toReferencedList(args); + node.arguments = args; + } else { + node.arguments = []; + } + return this.finishNode(node, "NewExpression"); + } + parseNewCallee(node) { + const isImport = this.match(83); + const callee = this.parseNoCallExpr(); + node.callee = callee; + if (isImport && (callee.type === "Import" || callee.type === "ImportExpression")) { + this.raise(Errors.ImportCallNotNewExpression, callee); + } + } + parseTemplateElement(isTagged) { + const { + start, + startLoc, + end, + value + } = this.state; + const elemStart = start + 1; + const elem = this.startNodeAt(createPositionWithColumnOffset(startLoc, 1)); + if (value === null) { + if (!isTagged) { + this.raise(Errors.InvalidEscapeSequenceTemplate, createPositionWithColumnOffset(this.state.firstInvalidTemplateEscapePos, 1)); + } + } + 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(); + const finishedNode = this.finishNode(elem, "TemplateElement"); + this.resetEndLocation(finishedNode, createPositionWithColumnOffset(this.state.lastTokEndLoc, endOffset)); + return finishedNode; + } + parseTemplate(isTagged) { + const node = this.startNode(); + let curElt = this.parseTemplateElement(isTagged); + const quasis = [curElt]; + const substitutions = []; + while (!curElt.tail) { + substitutions.push(this.parseTemplateSubstitution()); + this.readTemplateContinuation(); + quasis.push(curElt = this.parseTemplateElement(isTagged)); + } + node.expressions = substitutions; + node.quasis = quasis; + 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; + let sawProto = false; + 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); + sawProto = this.checkProto(prop, isRecord, sawProto, refExpressionErrors); + } + if (isRecord && !this.isObjectProperty(prop) && prop.type !== "SpreadElement") { + this.raise(Errors.InvalidRecordProperty, 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.lastTokStartLoc.index); + 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(Errors.UnsupportedPropertyDecorator, this.state.startLoc); + } + while (this.match(26)) { + decorators.push(this.parseDecorator()); + } + } + const prop = this.startNode(); + let isAsync = false; + let isAccessor = false; + 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) { + startLoc = this.state.startLoc; + } + let isGenerator = this.eat(55); + this.parsePropertyNamePrefixOperator(prop); + const containsEsc = this.state.containsEsc; + this.parsePropertyName(prop, refExpressionErrors); + if (!isGenerator && !containsEsc && this.maybeAsyncOrAccessorProp(prop)) { + const { + key + } = 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(Errors.AccessorIsGenerator, this.state.curPosition(), { + kind: keyName + }); + this.next(); + } + this.parsePropertyName(prop); + } + } + return this.parseObjPropValue(prop, startLoc, isGenerator, isAsync, false, isAccessor, refExpressionErrors); + } + 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" ? Errors.BadGetterArity : Errors.BadSetterArity, method); + } + if (method.kind === "set" && ((_params = params[params.length - 1]) == null ? void 0 : _params.type) === "RestElement") { + this.raise(Errors.BadSetterRestParameter, method); + } + } + parseObjectMethod(prop, isGenerator, isAsync, isPattern, isAccessor) { + if (isAccessor) { + const finishedProp = this.parseMethod(prop, isGenerator, false, false, false, "ObjectMethod"); + this.checkGetterSetterParams(finishedProp); + return finishedProp; + } + 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, startLoc, isPattern, refExpressionErrors) { + prop.shorthand = false; + if (this.eat(14)) { + prop.value = isPattern ? this.parseMaybeDefault(this.state.startLoc) : this.parseMaybeAssignAllowInOrVoidPattern(8, refExpressionErrors); + return this.finishObjectProperty(prop); + } + if (!prop.computed && prop.key.type === "Identifier") { + this.checkReservedWord(prop.key.name, prop.key.loc.start, true, false); + if (isPattern) { + prop.value = this.parseMaybeDefault(startLoc, this.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(Errors.InvalidCoverInitializedName, shorthandAssignLoc); + } + prop.value = this.parseMaybeDefault(startLoc, this.cloneIdentifier(prop.key)); + } else { + prop.value = this.cloneIdentifier(prop.key); + } + prop.shorthand = true; + return this.finishObjectProperty(prop); + } + } + finishObjectProperty(node) { + return this.finishNode(node, "ObjectProperty"); + } + parseObjPropValue(prop, startLoc, isGenerator, isAsync, isPattern, isAccessor, refExpressionErrors) { + const node = this.parseObjectMethod(prop, isGenerator, isAsync, isPattern, isAccessor) || this.parseObjectProperty(prop, 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 135: + key = this.parseNumericLiteral(value); + break; + case 134: + key = this.parseStringLiteral(value); + break; + case 136: + key = this.parseBigIntLiteral(value); + break; + case 139: + { + const privateKeyLoc = this.state.startLoc; + if (refExpressionErrors != null) { + if (refExpressionErrors.privateKeyLoc === null) { + refExpressionErrors.privateKeyLoc = privateKeyLoc; + } + } else { + this.raise(Errors.UnexpectedPrivateField, privateKeyLoc); + } + key = this.parsePrivateName(); + break; + } + default: + if (type === 137) { + key = this.parseDecimalLiteral(value); + break; + } + this.unexpected(); + } + } + prop.key = key; + if (type !== 139) { + prop.computed = false; + } + } + } + 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; + this.scope.enter(514 | 16 | (inClassScope ? 576 : 0) | (allowDirectSuper ? 32 : 0)); + this.prodParam.enter(functionFlags(isAsync, node.generator)); + this.parseFunctionParams(node, isConstructor); + const finishedNode = this.parseFunctionBodyAndFinish(node, type, true); + this.prodParam.exit(); + this.scope.exit(); + return finishedNode; + } + parseArrayLike(close, 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(514 | 4); + let flags = functionFlags(isAsync, false); + if (!this.match(5) && this.prodParam.hasIn) { + flags |= 8; + } + 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) { + this.toAssignableList(params, trailingCommaLoc, false); + node.params = params; + } + parseFunctionBodyAndFinish(node, type, isMethod = false) { + this.parseFunctionBody(node, false, isMethod); + return 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() | 4); + node.body = this.parseBlock(true, false, hasStrictModeDirective => { + const nonSimple = !this.isSimpleParamList(node.params); + if (hasStrictModeDirective && nonSimple) { + this.raise(Errors.IllegalLanguageModeDirective, (node.kind === "method" || node.kind === "constructor") && !!node.key ? node.key.loc.end : node); + } + const strictModeChanged = !oldStrict && this.state.strict; + this.checkParams(node, !this.state.strict && !allowExpression && !isMethod && !nonSimple, allowExpression, strictModeChanged); + if (this.state.strict && node.id) { + this.checkIdentifier(node.id, 65, strictModeChanged); + } + }); + this.prodParam.exit(); + this.state.labels = oldLabels; + } + this.expressionScope.exit(); + } + isSimpleParameter(node) { + return node.type === "Identifier"; + } + isSimpleParamList(params) { + for (let i = 0, len = params.length; i < len; i++) { + if (!this.isSimpleParameter(params[i])) return false; + } + return true; + } + checkParams(node, allowDuplicates, isArrowFunction, strictModeChanged = true) { + const checkClashes = !allowDuplicates && new Set(); + const formalParameters = { + type: "FormalParameters" + }; + for (const param of node.params) { + this.checkLVal(param, formalParameters, 5, checkClashes, 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(close, allowEmpty, refExpressionErrors)); + } + return elts; + } + parseExprListItem(close, allowEmpty, refExpressionErrors, allowPlaceholder) { + let elt; + if (this.match(12)) { + if (!allowEmpty) { + this.raise(Errors.UnexpectedToken, this.state.curPosition(), { + unexpected: "," + }); + } + elt = null; + } else if (this.match(21)) { + const spreadNodeStartLoc = this.state.startLoc; + elt = this.parseParenItem(this.parseSpread(refExpressionErrors), spreadNodeStartLoc); + } else if (this.match(17)) { + this.expectPlugin("partialApplication"); + if (!allowPlaceholder) { + this.raise(Errors.UnexpectedArgumentPlaceholder, this.state.startLoc); + } + const node = this.startNode(); + this.next(); + elt = this.finishNode(node, "ArgumentPlaceholder"); + } else { + elt = this.parseMaybeAssignAllowInOrVoidPattern(close, refExpressionErrors, this.parseParenItem); + } + return elt; + } + parseIdentifier(liberal) { + const node = this.startNode(); + const name = this.parseIdentifierName(liberal); + return this.createIdentifier(node, name); + } + createIdentifier(node, name) { + node.name = name; + node.loc.identifierName = name; + return this.finishNode(node, "Identifier"); + } + createIdentifierAt(node, name, endLoc) { + node.name = name; + node.loc.identifierName = name; + return this.finishNodeAt(node, "Identifier", endLoc); + } + parseIdentifierName(liberal) { + let name; + const { + startLoc, + type + } = this.state; + if (tokenIsKeywordOrIdentifier(type)) { + name = this.state.value; + } else { + this.unexpected(); + } + const tokenIsKeyword = tokenKeywordOrIdentifierIsKeyword(type); + if (liberal) { + if (tokenIsKeyword) { + this.replaceToken(132); + } + } 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 (checkKeywords && isKeyword(word)) { + this.raise(Errors.UnexpectedKeyword, startLoc, { + keyword: word + }); + return; + } + const reservedTest = !this.state.strict ? isReservedWord : isBinding ? isStrictBindReservedWord : isStrictReservedWord; + if (reservedTest(word, this.inModule)) { + this.raise(Errors.UnexpectedReservedWord, startLoc, { + reservedWord: word + }); + return; + } else if (word === "yield") { + if (this.prodParam.hasYield) { + this.raise(Errors.YieldBindingIdentifier, startLoc); + return; + } + } else if (word === "await") { + if (this.prodParam.hasAwait) { + this.raise(Errors.AwaitBindingIdentifier, startLoc); + return; + } + if (this.scope.inStaticBlock) { + this.raise(Errors.AwaitBindingIdentifierInStaticBlock, startLoc); + return; + } + this.expressionScope.recordAsyncArrowParametersError(startLoc); + } else if (word === "arguments") { + if (this.scope.inClassAndNotInNonArrowFunction) { + this.raise(Errors.ArgumentsInClass, startLoc); + return; + } + } + } + recordAwaitIfAllowed() { + const isAwaitAllowed = this.prodParam.hasAwait; + if (isAwaitAllowed && !this.scope.inFunction) { + this.state.hasTopLevelAwait = true; + } + return isAwaitAllowed; + } + parseAwait(startLoc) { + const node = this.startNodeAt(startLoc); + this.expressionScope.recordParameterInitializerError(Errors.AwaitExpressionFormalParameter, node); + if (this.eat(55)) { + this.raise(Errors.ObsoleteAwaitStar, node); + } + if (!this.scope.inFunction && !(this.optionFlags & 1)) { + if (this.isAmbiguousPrefixOrIdentifier()) { + this.ambiguousScriptDifferentAst = true; + } else { + this.sawUnambiguousESM = true; + } + } + if (!this.state.soloAwait) { + node.argument = this.parseMaybeUnary(null, true); + } + return this.finishNode(node, "AwaitExpression"); + } + isAmbiguousPrefixOrIdentifier() { + if (this.hasPrecedingLineBreak()) return true; + const { + type + } = this.state; + return type === 53 || type === 10 || type === 0 || tokenIsTemplate(type) || type === 102 && !this.state.containsEsc || type === 138 || type === 56 || this.hasPlugin("v8intrinsic") && type === 54; + } + parseYield(startLoc) { + const node = this.startNodeAt(startLoc); + this.expressionScope.recordParameterInitializerError(Errors.YieldInParameter, node); + let delegating = false; + let argument = null; + if (!this.hasPrecedingLineBreak()) { + delegating = this.eat(55); + switch (this.state.type) { + case 13: + case 140: + 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"); + } + parseImportCall(node) { + this.next(); + node.source = this.parseMaybeAssignAllowIn(); + node.options = null; + if (this.eat(12)) { + if (!this.match(11)) { + node.options = this.parseMaybeAssignAllowIn(); + if (this.eat(12)) { + this.addTrailingCommaExtraToNode(node.options); + if (!this.match(11)) { + do { + this.parseMaybeAssignAllowIn(); + } while (this.eat(12) && !this.match(11)); + this.raise(Errors.ImportCallArity, node); + } + } + } else { + this.addTrailingCommaExtraToNode(node.source); + } + } + this.expect(11); + return this.finishNode(node, "ImportExpression"); + } + checkPipelineAtInfixOperator(left, leftStartLoc) { + if (this.hasPlugin(["pipelineOperator", { + proposal: "smart" + }])) { + if (left.type === "SequenceExpression") { + this.raise(Errors.PipelineHeadSequenceExpression, leftStartLoc); + } + } + } + parseSmartPipelineBodyInStyle(childExpr, startLoc) { + if (this.isSimpleReference(childExpr)) { + const bodyNode = this.startNodeAt(startLoc); + bodyNode.callee = childExpr; + return this.finishNode(bodyNode, "PipelineBareFunction"); + } else { + const bodyNode = this.startNodeAt(startLoc); + 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(Errors.PipelineBodyNoArrow, this.state.startLoc); + } + if (!this.topicReferenceWasUsedInCurrentContext()) { + this.raise(Errors.PipelineTopicUnused, 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 = 8 & ~flags; + if (prodParamToSet) { + this.prodParam.enter(flags | 8); + try { + return callback(); + } finally { + this.prodParam.exit(); + } + } + return callback(); + } + disallowInAnd(callback) { + const flags = this.prodParam.currentFlags(); + const prodParamToClear = 8 & flags; + if (prodParamToClear) { + this.prodParam.enter(flags & ~8); + 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 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(), startLoc, prec); + this.state.inFSharpPipelineDirectBody = oldInFSharpPipelineDirectBody; + return ret; + } + parseModuleExpression() { + this.expectPlugin("moduleBlocks"); + const node = this.startNode(); + this.next(); + if (!this.match(5)) { + this.unexpected(null, 5); + } + const program = this.startNodeAt(this.state.endLoc); + this.next(); + const revertScopes = this.initializeScopes(true); + this.enterInitialScopes(); + try { + node.body = this.parseProgram(program, 8, "module"); + } finally { + revertScopes(); + } + return this.finishNode(node, "ModuleExpression"); + } + parseVoidPattern(refExpressionErrors) { + this.expectPlugin("discardBinding"); + const node = this.startNode(); + if (refExpressionErrors != null) { + refExpressionErrors.voidPatternLoc = this.state.startLoc; + } + this.next(); + return this.finishNode(node, "VoidPattern"); + } + parseMaybeAssignAllowInOrVoidPattern(close, refExpressionErrors, afterLeftParse) { + if (refExpressionErrors != null && this.match(88)) { + const nextCode = this.lookaheadCharCode(); + if (nextCode === 44 || nextCode === (close === 3 ? 93 : close === 8 ? 125 : 41) || nextCode === 61) { + return this.parseMaybeDefault(this.state.startLoc, this.parseVoidPattern(refExpressionErrors)); + } + } + return this.parseMaybeAssignAllowIn(refExpressionErrors, afterLeftParse); + } + parsePropertyNamePrefixOperator(prop) {} +} +const loopLabel = { + kind: 1 + }, + switchLabel = { + kind: 2 + }; +const loneSurrogate = /[\uD800-\uDFFF]/u; +const keywordRelationalOperator = /in(?:stanceof)?/y; +function babel7CompatTokens(tokens, input, startIndex) { + for (let i = 0; i < tokens.length; i++) { + const token = tokens[i]; + const { + type + } = token; + if (typeof type === "number") { + if (type === 139) { + 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(132), + 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 - startIndex) === 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, 140, this.options.sourceType === "module" ? "module" : "script"); + file.comments = this.comments; + if (this.optionFlags & 256) { + file.tokens = babel7CompatTokens(this.tokens, this.input, this.startIndex); + } + return this.finishNode(file, "File"); + } + parseProgram(program, end, sourceType) { + program.sourceType = sourceType; + program.interpreter = this.parseInterpreterDirective(); + this.parseBlockBody(program, true, true, end); + if (this.inModule) { + if (!(this.optionFlags & 64) && this.scope.undefinedExports.size > 0) { + for (const [localName, at] of Array.from(this.scope.undefinedExports)) { + this.raise(Errors.ModuleExportUndefined, at, { + localName + }); + } + } + this.addExtra(program, "topLevelAwait", this.state.hasTopLevelAwait); + } + let finishedProgram; + if (end === 140) { + finishedProgram = this.finishNode(program, "Program"); + } else { + finishedProgram = this.finishNodeAt(program, "Program", createPositionWithColumnOffset(this.state.startLoc, -1)); + } + return finishedProgram; + } + stmtToDirective(stmt) { + const directive = this.castNodeTo(stmt, "Directive"); + const directiveLiteral = this.castNodeTo(stmt.expression, "DirectiveLiteral"); + const expressionValue = directiveLiteral.value; + const raw = this.input.slice(this.offsetToSourcePos(directiveLiteral.start), this.offsetToSourcePos(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); + directive.value = directiveLiteral; + delete stmt.expression; + 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() { + if (!this.isContextual(100)) { + return false; + } + return this.hasFollowingBindingAtom(); + } + isUsing() { + if (!this.isContextual(107)) { + return false; + } + return this.nextTokenIsIdentifierOnSameLine(); + } + isForUsing() { + if (!this.isContextual(107)) { + return false; + } + const next = this.nextTokenInLineStart(); + const nextCh = this.codePointAtPos(next); + if (this.isUnparsedContextual(next, "of")) { + const nextCharAfterOf = this.lookaheadCharCodeSince(next + 2); + if (nextCharAfterOf !== 61 && nextCharAfterOf !== 58 && nextCharAfterOf !== 59) { + return false; + } + } + if (this.chStartsBindingIdentifier(nextCh, next) || this.isUnparsedContextual(next, "void")) { + return true; + } + return false; + } + nextTokenIsIdentifierOnSameLine() { + const next = this.nextTokenInLineStart(); + const nextCh = this.codePointAtPos(next); + return this.chStartsBindingIdentifier(nextCh, next); + } + isAwaitUsing() { + if (!this.isContextual(96)) { + return false; + } + let next = this.nextTokenInLineStart(); + if (this.isUnparsedContextual(next, "using")) { + next = this.nextTokenInLineStartSince(next + 5); + const nextCh = this.codePointAtPos(next); + if (this.chStartsBindingIdentifier(nextCh, next)) { + return true; + } + } + return false; + } + chStartsBindingIdentifier(ch, pos) { + if (isIdentifierStart(ch)) { + keywordRelationalOperator.lastIndex = pos; + if (keywordRelationalOperator.test(this.input)) { + const endCh = this.codePointAtPos(keywordRelationalOperator.lastIndex); + if (!isIdentifierChar(endCh) && endCh !== 92) { + return false; + } + } + return true; + } else if (ch === 92) { + return true; + } else { + return false; + } + } + chStartsBindingPattern(ch) { + return ch === 91 || ch === 123; + } + hasFollowingBindingAtom() { + const next = this.nextTokenStart(); + const nextCh = this.codePointAtPos(next); + return this.chStartsBindingPattern(nextCh) || this.chStartsBindingIdentifier(nextCh, next); + } + hasInLineFollowingBindingIdentifierOrBrace() { + const next = this.nextTokenInLineStart(); + const nextCh = this.codePointAtPos(next); + return nextCh === 123 || this.chStartsBindingIdentifier(nextCh, next); + } + allowsUsing() { + return (this.scope.inModule || !this.scope.inTopLevel) && !this.scope.inBareCaseStatement; + } + parseModuleItem() { + return this.parseStatementLike(1 | 2 | 4 | 8); + } + parseStatementListItem() { + return this.parseStatementLike(2 | 4 | (!this.options.annexB || this.state.strict ? 0 : 8)); + } + parseStatementOrSloppyAnnexBFunctionDeclaration(allowLabeledFunction = false) { + let flags = 0; + if (this.options.annexB && !this.state.strict) { + flags |= 4; + if (allowLabeledFunction) { + flags |= 8; + } + } + return this.parseStatementLike(flags); + } + parseStatement() { + return this.parseStatementLike(0); + } + parseStatementLike(flags) { + let decorators = null; + if (this.match(26)) { + decorators = this.parseDecorators(true); + } + return this.parseStatementContent(flags, decorators); + } + parseStatementContent(flags, decorators) { + const startType = this.state.type; + const node = this.startNode(); + const allowDeclaration = !!(flags & 2); + const allowFunctionDeclaration = !!(flags & 4); + const topLevel = flags & 1; + 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.parseDoWhileStatement(node); + case 91: + return this.parseForStatement(node); + case 68: + if (this.lookaheadCharCode() === 46) break; + if (!allowFunctionDeclaration) { + this.raise(this.state.strict ? Errors.StrictFunction : this.options.annexB ? Errors.SloppyFunctionAnnexB : Errors.SloppyFunction, this.state.startLoc); + } + return this.parseFunctionStatement(node, false, !allowDeclaration && allowFunctionDeclaration); + case 80: + if (!allowDeclaration) this.unexpected(); + return this.parseClass(this.maybeTakeDecorators(decorators, 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 96: + if (this.isAwaitUsing()) { + if (!this.allowsUsing()) { + this.raise(Errors.UnexpectedUsingDeclaration, node); + } else if (!allowDeclaration) { + this.raise(Errors.UnexpectedLexicalDeclaration, node); + } else if (!this.recordAwaitIfAllowed()) { + this.raise(Errors.AwaitUsingNotInAsyncContext, node); + } + this.next(); + return this.parseVarStatement(node, "await using"); + } + break; + case 107: + if (this.state.containsEsc || !this.hasInLineFollowingBindingIdentifierOrBrace()) { + break; + } + if (!this.allowsUsing()) { + this.raise(Errors.UnexpectedUsingDeclaration, this.state.startLoc); + } else if (!allowDeclaration) { + this.raise(Errors.UnexpectedLexicalDeclaration, this.state.startLoc); + } + return this.parseVarStatement(node, "using"); + case 100: + { + if (this.state.containsEsc) { + break; + } + const next = this.nextTokenStart(); + const nextCh = this.codePointAtPos(next); + if (nextCh !== 91) { + if (!allowDeclaration && this.hasFollowingLineBreak()) break; + if (!this.chStartsBindingIdentifier(nextCh, next) && nextCh !== 123) { + break; + } + } + } + case 75: + { + if (!allowDeclaration) { + this.raise(Errors.UnexpectedLexicalDeclaration, this.state.startLoc); + } + } + case 74: + { + const kind = this.state.value; + 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.optionFlags & 8) && !topLevel) { + this.raise(Errors.UnexpectedImportExport, this.state.startLoc); + } + this.next(); + let result; + if (startType === 83) { + result = this.parseImport(node); + } else { + result = this.parseExport(node, decorators); + } + this.assertModuleNodeAllowed(result); + return result; + } + default: + { + if (this.isAsyncFunction()) { + if (!allowDeclaration) { + this.raise(Errors.AsyncFunctionInSingleStatementContext, this.state.startLoc); + } + this.next(); + return this.parseFunctionStatement(node, true, !allowDeclaration && allowFunctionDeclaration); + } + } + } + const maybeName = this.state.value; + const expr = this.parseExpression(); + if (tokenIsIdentifier(startType) && expr.type === "Identifier" && this.eat(14)) { + return this.parseLabeledStatement(node, maybeName, expr, flags); + } else { + return this.parseExpressionStatement(node, expr, decorators); + } + } + assertModuleNodeAllowed(node) { + if (!(this.optionFlags & 8) && !this.inModule) { + this.raise(Errors.ImportOutsideModule, node); + } + } + decoratorsEnabledBeforeExport() { + if (this.hasPlugin("decorators-legacy")) return true; + return this.hasPlugin("decorators") && this.getPluginOption("decorators", "decoratorsBeforeExport") !== false; + } + maybeTakeDecorators(maybeDecorators, classNode, exportNode) { + if (maybeDecorators) { + var _classNode$decorators; + if ((_classNode$decorators = classNode.decorators) != null && _classNode$decorators.length) { + if (typeof this.getPluginOption("decorators", "decoratorsBeforeExport") !== "boolean") { + this.raise(Errors.DecoratorsBeforeAfterExport, classNode.decorators[0]); + } + classNode.decorators.unshift(...maybeDecorators); + } else { + classNode.decorators = maybeDecorators; + } + this.resetStartLocationFromNode(classNode, maybeDecorators[0]); + if (exportNode) this.resetStartLocationFromNode(exportNode, classNode); + } + return classNode; + } + canHaveLeadingDecorator() { + return this.match(80); + } + parseDecorators(allowExport) { + const decorators = []; + do { + decorators.push(this.parseDecorator()); + } while (this.match(26)); + if (this.match(82)) { + if (!allowExport) { + this.unexpected(); + } + if (!this.decoratorsEnabledBeforeExport()) { + this.raise(Errors.DecoratorExportClass, this.state.startLoc); + } + } else if (!this.canHaveLeadingDecorator()) { + throw this.raise(Errors.UnexpectedLeadingDecorator, this.state.startLoc); + } + return decorators; + } + parseDecorator() { + this.expectOnePlugin(["decorators", "decorators-legacy"]); + const node = this.startNode(); + this.next(); + if (this.hasPlugin("decorators")) { + const startLoc = this.state.startLoc; + let expr; + if (this.match(10)) { + const startLoc = this.state.startLoc; + this.next(); + expr = this.parseExpression(); + this.expect(11); + expr = this.wrapParenthesis(startLoc, expr); + const paramsStartLoc = this.state.startLoc; + node.expression = this.parseMaybeDecoratorArguments(expr, startLoc); + if (this.getPluginOption("decorators", "allowCallParenthesized") === false && node.expression !== expr) { + this.raise(Errors.DecoratorArgumentsOutsideParentheses, paramsStartLoc); + } + } else { + expr = this.parseIdentifier(false); + while (this.eat(16)) { + const node = this.startNodeAt(startLoc); + node.object = expr; + if (this.match(139)) { + this.classScope.usePrivateName(this.state.value, this.state.startLoc); + node.property = this.parsePrivateName(); + } else { + node.property = this.parseIdentifier(true); + } + node.computed = false; + expr = this.finishNode(node, "MemberExpression"); + } + node.expression = this.parseMaybeDecoratorArguments(expr, startLoc); + } + } else { + node.expression = this.parseExprSubscripts(); + } + return this.finishNode(node, "Decorator"); + } + parseMaybeDecoratorArguments(expr, startLoc) { + if (this.eat(10)) { + const node = this.startNodeAt(startLoc); + node.callee = expr; + node.arguments = this.parseCallExpressionArguments(); + 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 === 1)) { + break; + } + if (node.label && isBreak) break; + } + } + if (i === this.state.labels.length) { + const type = isBreak ? "BreakStatement" : "ContinueStatement"; + this.raise(Errors.IllegalBreakContinue, node, { + type + }); + } + } + parseDebuggerStatement(node) { + this.next(); + this.semicolon(); + return this.finishNode(node, "DebuggerStatement"); + } + parseHeaderExpression() { + this.expect(10); + const val = this.parseExpression(); + this.expect(11); + return val; + } + parseDoWhileStatement(node) { + this.next(); + this.state.labels.push(loopLabel); + node.body = this.withSmartMixTopicForbiddingContext(() => this.parseStatement()); + 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.isContextual(96) && this.recordAwaitIfAllowed()) { + awaitAt = this.state.startLoc; + this.next(); + } + this.scope.enter(0); + this.expect(10); + if (this.match(13)) { + if (awaitAt !== null) { + this.unexpected(awaitAt); + } + return this.parseFor(node, null); + } + const startsWithLet = this.isContextual(100); + { + const startsWithAwaitUsing = this.isAwaitUsing(); + const starsWithUsingDeclaration = startsWithAwaitUsing || this.isForUsing(); + const isLetOrUsing = startsWithLet && this.hasFollowingBindingAtom() || starsWithUsingDeclaration; + if (this.match(74) || this.match(75) || isLetOrUsing) { + const initNode = this.startNode(); + let kind; + if (startsWithAwaitUsing) { + kind = "await using"; + if (!this.recordAwaitIfAllowed()) { + this.raise(Errors.AwaitUsingNotInAsyncContext, this.state.startLoc); + } + this.next(); + } else { + kind = this.state.value; + } + this.next(); + this.parseVar(initNode, true, kind); + const init = this.finishNode(initNode, "VariableDeclaration"); + const isForIn = this.match(58); + if (isForIn && starsWithUsingDeclaration) { + this.raise(Errors.ForInUsing, init); + } + if ((isForIn || this.isContextual(102)) && 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(102); + if (isForOf) { + if (startsWithLet) { + this.raise(Errors.ForOfLet, init); + } + if (awaitAt === null && startsWithAsync && init.type === "Identifier") { + this.raise(Errors.ForOfAsync, init); + } + } + if (isForOf || this.match(58)) { + this.checkDestructuringPrivate(refExpressionErrors); + this.toAssignable(init, true); + const type = isForOf ? "ForOfStatement" : "ForInStatement"; + this.checkLVal(init, { + type + }); + 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, isHangingDeclaration) { + this.next(); + return this.parseFunction(node, 1 | (isHangingDeclaration ? 2 : 0) | (isAsync ? 8 : 0)); + } + parseIfStatement(node) { + this.next(); + node.test = this.parseHeaderExpression(); + node.consequent = this.parseStatementOrSloppyAnnexBFunctionDeclaration(); + node.alternate = this.eat(66) ? this.parseStatementOrSloppyAnnexBFunctionDeclaration() : null; + return this.finishNode(node, "IfStatement"); + } + parseReturnStatement(node) { + if (!this.prodParam.hasReturn) { + this.raise(Errors.IllegalReturn, 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(256); + 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(Errors.MultipleDefaultsInSwitch, this.state.lastTokStartLoc); + } + sawDefault = true; + cur.test = null; + } + this.expect(14); + } else { + if (cur) { + cur.consequent.push(this.parseStatementListItem()); + } 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(Errors.NewlineAfterThrow, this.state.lastTokEndLoc); + } + node.argument = this.parseExpression(); + this.semicolon(); + return this.finishNode(node, "ThrowStatement"); + } + parseCatchClauseParam() { + const param = this.parseBindingAtom(); + this.scope.enter(this.options.annexB && param.type === "Identifier" ? 8 : 0); + this.checkLVal(param, { + type: "CatchClause" + }, 9); + 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(0); + } + 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(Errors.NoCatchOrFinally, node); + } + return this.finishNode(node, "TryStatement"); + } + parseVarStatement(node, kind, allowMissingInitializer = false) { + this.next(); + this.parseVar(node, false, kind, allowMissingInitializer); + 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()); + this.state.labels.pop(); + return this.finishNode(node, "WhileStatement"); + } + parseWithStatement(node) { + if (this.state.strict) { + this.raise(Errors.StrictWith, this.state.startLoc); + } + this.next(); + node.object = this.parseHeaderExpression(); + node.body = this.withSmartMixTopicForbiddingContext(() => this.parseStatement()); + return this.finishNode(node, "WithStatement"); + } + parseEmptyStatement(node) { + this.next(); + return this.finishNode(node, "EmptyStatement"); + } + parseLabeledStatement(node, maybeName, expr, flags) { + for (const label of this.state.labels) { + if (label.name === maybeName) { + this.raise(Errors.LabelRedeclaration, expr, { + labelName: maybeName + }); + } + } + const kind = tokenIsLoop(this.state.type) ? 1 : this.match(71) ? 2 : 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.sourceToOffsetPos(this.state.start); + label.kind = kind; + } else { + break; + } + } + this.state.labels.push({ + name: maybeName, + kind: kind, + statementStart: this.sourceToOffsetPos(this.state.start) + }); + node.body = flags & 8 ? this.parseStatementOrSloppyAnnexBFunctionDeclaration(true) : this.parseStatement(); + this.state.labels.pop(); + node.label = expr; + return this.finishNode(node, "LabeledStatement"); + } + parseExpressionStatement(node, expr, decorators) { + 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(0); + } + 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 = topLevel ? this.parseModuleItem() : this.parseStatementListItem(); + 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); + } + afterBlockParse == null || 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()); + 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.options.annexB || this.state.strict || init.kind !== "var" || init.declarations[0].id.type !== "Identifier")) { + this.raise(Errors.ForInOfLoopInitializer, init, { + type: isForIn ? "ForInStatement" : "ForOfStatement" + }); + } + if (init.type === "AssignmentPattern") { + this.raise(Errors.InvalidLhs, init, { + ancestor: { + type: "ForStatement" + } + }); + } + node.left = init; + node.right = isForIn ? this.parseExpression() : this.parseMaybeAssignAllowIn(); + this.expect(11); + node.body = this.withSmartMixTopicForbiddingContext(() => this.parseStatement()); + this.scope.exit(); + this.state.labels.pop(); + return this.finishNode(node, isForIn ? "ForInStatement" : "ForOfStatement"); + } + parseVar(node, isFor, kind, allowMissingInitializer = false) { + const declarations = node.declarations = []; + node.kind = kind; + for (;;) { + const decl = this.startNode(); + this.parseVarId(decl, kind); + decl.init = !this.eat(29) ? null : isFor ? this.parseMaybeAssignDisallowIn() : this.parseMaybeAssignAllowIn(); + if (decl.init === null && !allowMissingInitializer) { + if (decl.id.type !== "Identifier" && !(isFor && (this.match(58) || this.isContextual(102)))) { + this.raise(Errors.DeclarationMissingInitializer, this.state.lastTokEndLoc, { + kind: "destructuring" + }); + } else if ((kind === "const" || kind === "using" || kind === "await using") && !(this.match(58) || this.isContextual(102))) { + this.raise(Errors.DeclarationMissingInitializer, this.state.lastTokEndLoc, { + kind + }); + } + } + declarations.push(this.finishNode(decl, "VariableDeclarator")); + if (!this.eat(12)) break; + } + return node; + } + parseVarId(decl, kind) { + const id = this.parseBindingAtom(); + if (kind === "using" || kind === "await using") { + if (id.type === "ArrayPattern" || id.type === "ObjectPattern") { + this.raise(Errors.UsingDeclarationHasBindingPattern, id.loc.start); + } + } else { + if (id.type === "VoidPattern") { + this.raise(Errors.UnexpectedVoidPattern, id.loc.start); + } + } + this.checkLVal(id, { + type: "VariableDeclarator" + }, kind === "var" ? 5 : 8201); + decl.id = id; + } + parseAsyncFunctionExpression(node) { + return this.parseFunction(node, 8); + } + parseFunction(node, flags = 0) { + const hangingDeclaration = flags & 2; + const isDeclaration = !!(flags & 1); + const requireId = isDeclaration && !(flags & 4); + const isAsync = !!(flags & 8); + this.initFunction(node, isAsync); + if (this.match(55)) { + if (hangingDeclaration) { + this.raise(Errors.GeneratorInSingleStatementContext, this.state.startLoc); + } + this.next(); + node.generator = true; + } + if (isDeclaration) { + node.id = this.parseFunctionId(requireId); + } + const oldMaybeInArrowParameters = this.state.maybeInArrowParameters; + this.state.maybeInArrowParameters = false; + this.scope.enter(514); + this.prodParam.enter(functionFlags(isAsync, node.generator)); + if (!isDeclaration) { + node.id = this.parseFunctionId(); + } + this.parseFunctionParams(node, false); + this.withSmartMixTopicForbiddingContext(() => { + this.parseFunctionBodyAndFinish(node, isDeclaration ? "FunctionDeclaration" : "FunctionExpression"); + }); + this.prodParam.exit(); + this.scope.exit(); + if (isDeclaration && !hangingDeclaration) { + this.registerFunctionStatementId(node); + } + this.state.maybeInArrowParameters = oldMaybeInArrowParameters; + return node; + } + parseFunctionId(requireId) { + return requireId || tokenIsIdentifier(this.state.type) ? this.parseIdentifier() : null; + } + parseFunctionParams(node, isConstructor) { + this.expect(10); + this.expressionScope.enter(newParameterDeclarationScope()); + node.params = this.parseBindingList(11, 41, 2 | (isConstructor ? 4 : 0)); + this.expressionScope.exit(); + } + registerFunctionStatementId(node) { + if (!node.id) return; + this.scope.declareName(node.id.name, !this.options.annexB || this.state.strict || node.generator || node.async ? this.scope.treatFunctionsAsVar ? 5 : 8201 : 17, node.id.loc.start); + } + parseClass(node, isStatement, optionalId) { + this.next(); + 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); + } + nameIsConstructor(key) { + return key.type === "Identifier" && key.name === "constructor" || key.type === "StringLiteral" && key.value === "constructor"; + } + isNonstaticConstructor(method) { + return !method.computed && !method.static && this.nameIsConstructor(method.key); + } + 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(Errors.DecoratorSemicolon, 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(Errors.DecoratorConstructor, member); + } + } + }); + this.state.strict = oldStrict; + this.next(); + if (decorators.length) { + throw this.raise(Errors.TrailingDecorator, 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(106); + 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(139); + this.parseClassElementName(method); + this.parsePostMemberNameModifiers(method); + if (isPrivateName) { + this.pushClassPrivateMethod(classBody, privateMethod, true, false); + return; + } + if (this.isNonstaticConstructor(publicMethod)) { + this.raise(Errors.ConstructorIsGenerator, publicMethod.key); + } + this.pushClassMethod(classBody, publicMethod, true, false, false, false); + return; + } + const isContextual = !this.state.containsEsc && tokenIsIdentifier(this.state.type); + const key = this.parseClassElementName(member); + const maybeContextualKw = isContextual ? key.name : null; + const isPrivate = this.isPrivateName(key); + 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(Errors.DuplicateConstructor, key); + } + if (isConstructor && this.hasPlugin("typescript") && member.override) { + this.raise(Errors.OverrideOnConstructor, 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 (maybeContextualKw === "async" && !this.isLineTerminator()) { + this.resetPreviousNodeTrailingComments(key); + const isGenerator = this.eat(55); + if (publicMember.optional) { + this.unexpected(maybeQuestionTokenStartLoc); + } + method.kind = "method"; + const isPrivate = this.match(139); + this.parseClassElementName(method); + this.parsePostMemberNameModifiers(publicMember); + if (isPrivate) { + this.pushClassPrivateMethod(classBody, privateMethod, isGenerator, true); + } else { + if (this.isNonstaticConstructor(publicMethod)) { + this.raise(Errors.ConstructorIsAsync, publicMethod.key); + } + this.pushClassMethod(classBody, publicMethod, isGenerator, true, false, false); + } + } else if ((maybeContextualKw === "get" || maybeContextualKw === "set") && !(this.match(55) && this.isLineTerminator())) { + this.resetPreviousNodeTrailingComments(key); + method.kind = maybeContextualKw; + const isPrivate = this.match(139); + this.parseClassElementName(publicMethod); + if (isPrivate) { + this.pushClassPrivateMethod(classBody, privateMethod, false, false); + } else { + if (this.isNonstaticConstructor(publicMethod)) { + this.raise(Errors.ConstructorIsAccessor, publicMethod.key); + } + this.pushClassMethod(classBody, publicMethod, false, false, false, false); + } + this.checkGetterSetterParams(publicMethod); + } else if (maybeContextualKw === "accessor" && !this.isLineTerminator()) { + this.expectPlugin("decoratorAutoAccessors"); + this.resetPreviousNodeTrailingComments(key); + const isPrivate = this.match(139); + 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 === 132 || type === 134) && member.static && value === "prototype") { + this.raise(Errors.StaticPrototype, this.state.startLoc); + } + if (type === 139) { + if (value === "constructor") { + this.raise(Errors.ConstructorClassPrivateField, this.state.startLoc); + } + const key = this.parsePrivateName(); + member.key = key; + return key; + } + this.parsePropertyName(member); + return member.key; + } + parseClassStaticBlock(classBody, member) { + var _member$decorators; + this.scope.enter(576 | 128 | 16); + const oldLabels = this.state.labels; + this.state.labels = []; + this.prodParam.enter(0); + const body = member.body = []; + this.parseBlockOrModuleBlockBody(body, undefined, false, 8); + this.prodParam.exit(); + this.scope.exit(); + this.state.labels = oldLabels; + classBody.body.push(this.finishNode(member, "StaticBlock")); + if ((_member$decorators = member.decorators) != null && _member$decorators.length) { + this.raise(Errors.DecoratorStaticBlock, member); + } + } + pushClassProperty(classBody, prop) { + if (!prop.computed && this.nameIsConstructor(prop.key)) { + this.raise(Errors.ConstructorClassField, 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), 0, node.key.loc.start); + } + pushClassAccessorProperty(classBody, prop, isPrivate) { + if (!isPrivate && !prop.computed && this.nameIsConstructor(prop.key)) { + this.raise(Errors.ConstructorClassField, prop.key); + } + const node = this.parseClassAccessorProperty(prop); + classBody.body.push(node); + if (isPrivate) { + this.classScope.declarePrivateName(this.getPrivateNameSV(node.key), 0, 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 ? 6 : 2 : node.kind === "set" ? node.static ? 5 : 1 : 0; + 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(576 | 16); + this.expressionScope.enter(newExpressionScope()); + this.prodParam.enter(0); + node.value = this.eat(29) ? this.parseMaybeAssignAllowIn() : null; + this.expressionScope.exit(); + this.prodParam.exit(); + this.scope.exit(); + } + parseClassId(node, isStatement, optionalId, bindingType = 8331) { + if (tokenIsIdentifier(this.state.type)) { + node.id = this.parseIdentifier(); + if (isStatement) { + this.declareNameFromIdentifier(node.id, bindingType); + } + } else { + if (optionalId || !isStatement) { + node.id = null; + } else { + throw this.raise(Errors.MissingClassName, this.state.startLoc); + } + } + } + parseClassSuper(node) { + node.superClass = this.eat(81) ? this.parseExprSubscripts() : null; + } + parseExport(node, decorators) { + const maybeDefaultIdentifier = this.parseMaybeImportPhase(node, true); + const hasDefault = this.maybeParseExportDefaultSpecifier(node, maybeDefaultIdentifier); + 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(); + if (decorators) { + throw this.raise(Errors.UnsupportedDecoratorExport, node); + } + this.parseExportFrom(node, true); + this.sawUnambiguousESM = true; + return this.finishNode(node, "ExportAllDeclaration"); + } + const hasSpecifiers = this.maybeParseExportNamedSpecifiers(node); + if (hasDefault && parseAfterDefault && !hasStar && !hasSpecifiers) { + this.unexpected(null, 5); + } + if (hasNamespace && parseAfterNamespace) { + this.unexpected(null, 98); + } + let hasDeclaration; + if (isFromRequired || hasSpecifiers) { + hasDeclaration = false; + if (decorators) { + throw this.raise(Errors.UnsupportedDecoratorExport, node); + } + this.parseExportFrom(node, isFromRequired); + } else { + hasDeclaration = this.maybeParseExportDeclaration(node); + } + if (isFromRequired || hasSpecifiers || hasDeclaration) { + var _node2$declaration; + const node2 = node; + this.checkExport(node2, true, false, !!node2.source); + if (((_node2$declaration = node2.declaration) == null ? void 0 : _node2$declaration.type) === "ClassDeclaration") { + this.maybeTakeDecorators(decorators, node2.declaration, node2); + } else if (decorators) { + throw this.raise(Errors.UnsupportedDecoratorExport, node); + } + this.sawUnambiguousESM = true; + return this.finishNode(node2, "ExportNamedDeclaration"); + } + if (this.eat(65)) { + const node2 = node; + const decl = this.parseExportDefaultExpression(); + node2.declaration = decl; + if (decl.type === "ClassDeclaration") { + this.maybeTakeDecorators(decorators, decl, node2); + } else if (decorators) { + throw this.raise(Errors.UnsupportedDecoratorExport, node); + } + this.checkExport(node2, true, true); + this.sawUnambiguousESM = true; + return this.finishNode(node2, "ExportDefaultDeclaration"); + } + throw this.unexpected(null, 5); + } + eatExportStar(node) { + return this.eat(55); + } + maybeParseExportDefaultSpecifier(node, maybeDefaultIdentifier) { + if (maybeDefaultIdentifier || this.isExportDefaultSpecifier()) { + this.expectPlugin("exportDefaultFrom", maybeDefaultIdentifier == null ? void 0 : maybeDefaultIdentifier.loc.start); + const id = maybeDefaultIdentifier || this.parseIdentifier(true); + const specifier = this.startNodeAtNode(id); + specifier.exported = id; + node.specifiers = [this.finishNode(specifier, "ExportDefaultSpecifier")]; + return true; + } + return false; + } + maybeParseExportNamespaceSpecifier(node) { + if (this.isContextual(93)) { + var _ref, _ref$specifiers; + (_ref$specifiers = (_ref = node).specifiers) != null ? _ref$specifiers : _ref.specifiers = []; + const specifier = this.startNodeAt(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)) { + const node2 = node; + if (!node2.specifiers) node2.specifiers = []; + const isTypeExport = node2.exportKind === "type"; + node2.specifiers.push(...this.parseExportSpecifiers(isTypeExport)); + node2.source = null; + if (this.hasPlugin("importAssertions")) { + node2.assertions = []; + } else { + node2.attributes = []; + } + node2.declaration = null; + return true; + } + return false; + } + maybeParseExportDeclaration(node) { + if (this.shouldParseExportDeclaration()) { + node.specifiers = []; + node.source = null; + if (this.hasPlugin("importAssertions")) { + node.assertions = []; + } else { + node.attributes = []; + } + node.declaration = this.parseExportDeclaration(node); + return true; + } + return false; + } + isAsyncFunction() { + if (!this.isContextual(95)) return false; + const next = this.nextTokenInLineStart(); + return this.isUnparsedContextual(next, "function"); + } + parseExportDefaultExpression() { + const expr = this.startNode(); + if (this.match(68)) { + this.next(); + return this.parseFunction(expr, 1 | 4); + } else if (this.isAsyncFunction()) { + this.next(); + this.next(); + return this.parseFunction(expr, 1 | 4 | 8); + } + if (this.match(80)) { + return this.parseClass(expr, true, true); + } + if (this.match(26)) { + if (this.hasPlugin("decorators") && this.getPluginOption("decorators", "decoratorsBeforeExport") === true) { + this.raise(Errors.DecoratorBeforeExport, this.state.startLoc); + } + return this.parseClass(this.maybeTakeDecorators(this.parseDecorators(false), this.startNode()), true, true); + } + if (this.match(75) || this.match(74) || this.isLet() || this.isUsing() || this.isAwaitUsing()) { + throw this.raise(Errors.UnsupportedDefaultExport, this.state.startLoc); + } + const res = this.parseMaybeAssignAllowIn(); + this.semicolon(); + return res; + } + parseExportDeclaration(node) { + if (this.match(80)) { + const node = this.parseClass(this.startNode(), true, false); + return node; + } + return this.parseStatementListItem(); + } + isExportDefaultSpecifier() { + const { + type + } = this.state; + if (tokenIsIdentifier(type)) { + if (type === 95 && !this.state.containsEsc || type === 100) { + return false; + } + if ((type === 130 || type === 129) && !this.state.containsEsc) { + const next = this.nextTokenStart(); + const nextChar = this.input.charCodeAt(next); + if (nextChar === 123 || this.chStartsBindingIdentifier(nextChar, next) && !this.input.startsWith("from", next)) { + 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(98)) { + node.source = this.parseImportSource(); + this.checkExport(node); + this.maybeParseImportAttributes(node); + this.checkJSONModuleImport(node); + } 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") === true) { + this.raise(Errors.DecoratorBeforeExport, this.state.startLoc); + } + return true; + } + } + if (this.isUsing()) { + this.raise(Errors.UsingDeclarationExport, this.state.startLoc); + return true; + } + if (this.isAwaitUsing()) { + this.raise(Errors.UsingDeclarationExport, 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) { + var _node$specifiers; + 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$extra.parenthesized)) { + this.raise(Errors.ExportDefaultFromAsIdentifier, declaration); + } + } + } else if ((_node$specifiers = node.specifiers) != null && _node$specifiers.length) { + for (const specifier of node.specifiers) { + const { + exported + } = specifier; + const exportName = exported.type === "Identifier" ? exported.name : exported.value; + this.checkDuplicateExports(specifier, exportName); + if (!isFrom && specifier.local) { + const { + local + } = specifier; + if (local.type !== "Identifier") { + this.raise(Errors.ExportBindingIsString, specifier, { + localName: local.value, + exportName + }); + } else { + this.checkReservedWord(local.name, local.loc.start, true, false); + this.scope.checkLocalExport(local); + } + } + } + } else if (node.declaration) { + const decl = node.declaration; + if (decl.type === "FunctionDeclaration" || decl.type === "ClassDeclaration") { + const { + id + } = decl; + if (!id) throw new Error("Assertion failure"); + this.checkDuplicateExports(node, id.name); + } else if (decl.type === "VariableDeclaration") { + for (const declaration of decl.declarations) { + this.checkDeclaration(declaration.id); + } + } + } + } + } + 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, exportName) { + if (this.exportedIdentifiers.has(exportName)) { + if (exportName === "default") { + this.raise(Errors.DuplicateDefaultExport, node); + } else { + this.raise(Errors.DuplicateExport, node, { + exportName + }); + } + } + this.exportedIdentifiers.add(exportName); + } + 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(130); + const isString = this.match(134); + 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 = this.cloneStringLiteral(node.local); + } else if (!node.exported) { + node.exported = this.cloneIdentifier(node.local); + } + return this.finishNode(node, "ExportSpecifier"); + } + parseModuleExportName() { + if (this.match(134)) { + const result = this.parseStringLiteral(this.state.value); + const surrogate = loneSurrogate.exec(result.value); + if (surrogate) { + this.raise(Errors.ModuleExportNameHasLoneSurrogate, result, { + surrogateCharCode: surrogate[0].charCodeAt(0) + }); + } + return result; + } + return this.parseIdentifier(true); + } + isJSONModuleImport(node) { + if (node.assertions != null) { + return node.assertions.some(({ + key, + value + }) => { + return value.value === "json" && (key.type === "Identifier" ? key.name === "type" : key.value === "type"); + }); + } + return false; + } + checkImportReflection(node) { + const { + specifiers + } = node; + const singleBindingType = specifiers.length === 1 ? specifiers[0].type : null; + if (node.phase === "source") { + if (singleBindingType !== "ImportDefaultSpecifier") { + this.raise(Errors.SourcePhaseImportRequiresDefault, specifiers[0].loc.start); + } + } else if (node.phase === "defer") { + if (singleBindingType !== "ImportNamespaceSpecifier") { + this.raise(Errors.DeferImportRequiresNamespace, specifiers[0].loc.start); + } + } else if (node.module) { + var _node$assertions; + if (singleBindingType !== "ImportDefaultSpecifier") { + this.raise(Errors.ImportReflectionNotBinding, specifiers[0].loc.start); + } + if (((_node$assertions = node.assertions) == null ? void 0 : _node$assertions.length) > 0) { + this.raise(Errors.ImportReflectionHasAssertion, specifiers[0].loc.start); + } + } + } + checkJSONModuleImport(node) { + if (this.isJSONModuleImport(node) && node.type !== "ExportAllDeclaration") { + const { + specifiers + } = node; + if (specifiers != null) { + const nonDefaultNamedSpecifier = specifiers.find(specifier => { + let imported; + if (specifier.type === "ExportSpecifier") { + imported = specifier.local; + } else if (specifier.type === "ImportSpecifier") { + imported = specifier.imported; + } + if (imported !== undefined) { + return imported.type === "Identifier" ? imported.name !== "default" : imported.value !== "default"; + } + }); + if (nonDefaultNamedSpecifier !== undefined) { + this.raise(Errors.ImportJSONBindingNotDefault, nonDefaultNamedSpecifier.loc.start); + } + } + } + } + isPotentialImportPhase(isExport) { + if (isExport) return false; + return this.isContextual(105) || this.isContextual(97) || this.isContextual(127); + } + applyImportPhase(node, isExport, phase, loc) { + if (isExport) { + return; + } + if (phase === "module") { + this.expectPlugin("importReflection", loc); + node.module = true; + } else if (this.hasPlugin("importReflection")) { + node.module = false; + } + if (phase === "source") { + this.expectPlugin("sourcePhaseImports", loc); + node.phase = "source"; + } else if (phase === "defer") { + this.expectPlugin("deferredImportEvaluation", loc); + node.phase = "defer"; + } else if (this.hasPlugin("sourcePhaseImports")) { + node.phase = null; + } + } + parseMaybeImportPhase(node, isExport) { + if (!this.isPotentialImportPhase(isExport)) { + this.applyImportPhase(node, isExport, null); + return null; + } + const phaseIdentifier = this.startNode(); + const phaseIdentifierName = this.parseIdentifierName(true); + const { + type + } = this.state; + const isImportPhase = tokenIsKeywordOrIdentifier(type) ? type !== 98 || this.lookaheadCharCode() === 102 : type !== 12; + if (isImportPhase) { + this.applyImportPhase(node, isExport, phaseIdentifierName, phaseIdentifier.loc.start); + return null; + } else { + this.applyImportPhase(node, isExport, null); + return this.createIdentifier(phaseIdentifier, phaseIdentifierName); + } + } + isPrecedingIdImportPhase(phase) { + const { + type + } = this.state; + return tokenIsIdentifier(type) ? type !== 98 || this.lookaheadCharCode() === 102 : type !== 12; + } + parseImport(node) { + if (this.match(134)) { + return this.parseImportSourceAndAttributes(node); + } + return this.parseImportSpecifiersAndAfter(node, this.parseMaybeImportPhase(node, false)); + } + parseImportSpecifiersAndAfter(node, maybeDefaultIdentifier) { + node.specifiers = []; + const hasDefault = this.maybeParseDefaultImportSpecifier(node, maybeDefaultIdentifier); + const parseNext = !hasDefault || this.eat(12); + const hasStar = parseNext && this.maybeParseStarImportSpecifier(node); + if (parseNext && !hasStar) this.parseNamedImportSpecifiers(node); + this.expectContextual(98); + return this.parseImportSourceAndAttributes(node); + } + parseImportSourceAndAttributes(node) { + var _node$specifiers2; + (_node$specifiers2 = node.specifiers) != null ? _node$specifiers2 : node.specifiers = []; + node.source = this.parseImportSource(); + this.maybeParseImportAttributes(node); + this.checkImportReflection(node); + this.checkJSONModuleImport(node); + this.semicolon(); + this.sawUnambiguousESM = true; + return this.finishNode(node, "ImportDeclaration"); + } + parseImportSource() { + if (!this.match(134)) this.unexpected(); + return this.parseExprAtom(); + } + parseImportSpecifierLocal(node, specifier, type) { + specifier.local = this.parseIdentifier(); + node.specifiers.push(this.finishImportSpecifier(specifier, type)); + } + finishImportSpecifier(specifier, type, bindingType = 8201) { + this.checkLVal(specifier.local, { + type + }, bindingType); + return this.finishNode(specifier, type); + } + parseImportAttributes() { + this.expect(5); + 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(Errors.ModuleAttributesWithDuplicateKeys, this.state.startLoc, { + key: keyName + }); + } + attrNames.add(keyName); + if (this.match(134)) { + node.key = this.parseStringLiteral(keyName); + } else { + node.key = this.parseIdentifier(true); + } + this.expect(14); + if (!this.match(134)) { + throw this.raise(Errors.ModuleAttributeInvalidValue, this.state.startLoc); + } + node.value = this.parseStringLiteral(this.state.value); + attrs.push(this.finishNode(node, "ImportAttribute")); + } while (this.eat(12)); + this.expect(8); + return attrs; + } + parseModuleAttributes() { + const attrs = []; + const attributes = new Set(); + do { + const node = this.startNode(); + node.key = this.parseIdentifier(true); + if (node.key.name !== "type") { + this.raise(Errors.ModuleAttributeDifferentFromType, node.key); + } + if (attributes.has(node.key.name)) { + this.raise(Errors.ModuleAttributesWithDuplicateKeys, node.key, { + key: node.key.name + }); + } + attributes.add(node.key.name); + this.expect(14); + if (!this.match(134)) { + throw this.raise(Errors.ModuleAttributeInvalidValue, this.state.startLoc); + } + node.value = this.parseStringLiteral(this.state.value); + attrs.push(this.finishNode(node, "ImportAttribute")); + } while (this.eat(12)); + return attrs; + } + maybeParseImportAttributes(node) { + let attributes; + var useWith = false; + if (this.match(76)) { + if (this.hasPrecedingLineBreak() && this.lookaheadCharCode() === 40) { + return; + } + this.next(); + if (this.hasPlugin("moduleAttributes")) { + attributes = this.parseModuleAttributes(); + this.addExtra(node, "deprecatedWithLegacySyntax", true); + } else { + attributes = this.parseImportAttributes(); + } + useWith = true; + } else if (this.isContextual(94) && !this.hasPrecedingLineBreak()) { + if (!this.hasPlugin("deprecatedImportAssert") && !this.hasPlugin("importAssertions")) { + this.raise(Errors.ImportAttributesUseAssert, this.state.startLoc); + } + if (!this.hasPlugin("importAssertions")) { + this.addExtra(node, "deprecatedAssertSyntax", true); + } + this.next(); + attributes = this.parseImportAttributes(); + } else { + attributes = []; + } + if (!useWith && this.hasPlugin("importAssertions")) { + node.assertions = attributes; + } else { + node.attributes = attributes; + } + } + maybeParseDefaultImportSpecifier(node, maybeDefaultIdentifier) { + if (maybeDefaultIdentifier) { + const specifier = this.startNodeAtNode(maybeDefaultIdentifier); + specifier.local = maybeDefaultIdentifier; + node.specifiers.push(this.finishImportSpecifier(specifier, "ImportDefaultSpecifier")); + return true; + } else if (tokenIsKeywordOrIdentifier(this.state.type)) { + this.parseImportSpecifierLocal(node, this.startNode(), "ImportDefaultSpecifier"); + return true; + } + return false; + } + maybeParseStarImportSpecifier(node) { + if (this.match(55)) { + const specifier = this.startNode(); + this.next(); + this.expectContextual(93); + this.parseImportSpecifierLocal(node, specifier, "ImportNamespaceSpecifier"); + 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(Errors.DestructureNamedImport, this.state.startLoc); + } + this.expect(12); + if (this.eat(8)) break; + } + const specifier = this.startNode(); + const importedIsString = this.match(134); + const isMaybeTypeOnly = this.isContextual(130); + specifier.imported = this.parseModuleExportName(); + const importSpecifier = this.parseImportSpecifier(specifier, importedIsString, node.importKind === "type" || node.importKind === "typeof", isMaybeTypeOnly, undefined); + node.specifiers.push(importSpecifier); + } + } + parseImportSpecifier(specifier, importedIsString, isInTypeOnlyImport, isMaybeTypeOnly, bindingType) { + if (this.eatContextual(93)) { + specifier.local = this.parseIdentifier(); + } else { + const { + imported + } = specifier; + if (importedIsString) { + throw this.raise(Errors.ImportBindingIsString, specifier, { + importName: imported.value + }); + } + this.checkReservedWord(imported.name, specifier.loc.start, true, true); + if (!specifier.local) { + specifier.local = this.cloneIdentifier(imported); + } + } + return this.finishImportSpecifier(specifier, "ImportSpecifier", bindingType); + } + isThisParam(param) { + return param.type === "Identifier" && param.name === "this"; + } +} +class Parser extends StatementParser { + constructor(options, input, pluginsMap) { + const normalizedOptions = getOptions(options); + super(normalizedOptions, input); + this.options = normalizedOptions; + this.initializeScopes(); + this.plugins = pluginsMap; + this.filename = normalizedOptions.sourceFilename; + this.startIndex = normalizedOptions.startIndex; + let optionFlags = 0; + if (normalizedOptions.allowAwaitOutsideFunction) { + optionFlags |= 1; + } + if (normalizedOptions.allowReturnOutsideFunction) { + optionFlags |= 2; + } + if (normalizedOptions.allowImportExportEverywhere) { + optionFlags |= 8; + } + if (normalizedOptions.allowSuperOutsideMethod) { + optionFlags |= 16; + } + if (normalizedOptions.allowUndeclaredExports) { + optionFlags |= 64; + } + if (normalizedOptions.allowNewTargetOutsideFunction) { + optionFlags |= 4; + } + if (normalizedOptions.allowYieldOutsideFunction) { + optionFlags |= 32; + } + if (normalizedOptions.ranges) { + optionFlags |= 128; + } + if (normalizedOptions.tokens) { + optionFlags |= 256; + } + if (normalizedOptions.createImportExpressions) { + optionFlags |= 512; + } + if (normalizedOptions.createParenthesizedExpressions) { + optionFlags |= 1024; + } + if (normalizedOptions.errorRecovery) { + optionFlags |= 2048; + } + if (normalizedOptions.attachComment) { + optionFlags |= 4096; + } + if (normalizedOptions.annexB) { + optionFlags |= 8192; + } + this.optionFlags = optionFlags; + } + getScopeHandler() { + return ScopeHandler; + } + parse() { + this.enterInitialScopes(); + const file = this.startNode(); + const program = this.startNode(); + this.nextToken(); + file.errors = null; + const result = this.parseTopLevel(file, program); + result.errors = this.state.errors; + result.comments.length = this.state.commentsLen; + return result; + } +} +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; + const pluginsMap = new Map(); + if (options != null && options.plugins) { + for (const plugin of options.plugins) { + let name, opts; + if (typeof plugin === "string") { + name = plugin; + } else { + [name, opts] = plugin; + } + if (!pluginsMap.has(name)) { + pluginsMap.set(name, opts || {}); + } + } + validatePlugins(pluginsMap); + cls = getParserClass(pluginsMap); + } + return new cls(options, input, pluginsMap); +} +const parserClassCache = new Map(); +function getParserClass(pluginsMap) { + const pluginList = []; + for (const name of mixinPluginNames) { + if (pluginsMap.has(name)) { + pluginList.push(name); + } + } + const key = pluginList.join("|"); + let cls = parserClassCache.get(key); + if (!cls) { + cls = Parser; + for (const plugin of pluginList) { + cls = mixinPlugins[plugin](cls); + } + parserClassCache.set(key, cls); + } + return cls; +} +exports.parse = parse; +exports.parseExpression = parseExpression; +exports.tokTypes = tokTypes; +//# sourceMappingURL=index.js.map diff --git a/vanilla/node_modules/@babel/parser/lib/index.js.map b/vanilla/node_modules/@babel/parser/lib/index.js.map new file mode 100644 index 0000000..0f73da4 --- /dev/null +++ b/vanilla/node_modules/@babel/parser/lib/index.js.map @@ -0,0 +1 @@ +{"version":3,"file":"index.js","sources":["../src/util/location.ts","../src/parse-error/module-errors.ts","../src/parse-error/to-node-description.ts","../src/parse-error/standard-errors.ts","../src/parse-error/strict-mode-errors.ts","../src/parse-error/parse-expression-errors.ts","../src/parse-error/pipeline-operator-errors.ts","../src/parse-error.ts","../src/options.ts","../src/plugins/estree.ts","../src/tokenizer/context.ts","../src/tokenizer/types.ts","../../babel-helper-validator-identifier/src/identifier.ts","../../babel-helper-validator-identifier/src/keyword.ts","../src/util/identifier.ts","../src/util/scope.ts","../src/plugins/flow/scope.ts","../src/plugins/flow/index.ts","../src/plugins/jsx/xhtml.ts","../src/util/whitespace.ts","../src/plugins/jsx/index.ts","../src/plugins/typescript/scope.ts","../src/util/production-parameter.ts","../src/parser/base.ts","../src/parser/comments.ts","../src/tokenizer/state.ts","../../babel-helper-string-parser/src/index.ts","../src/tokenizer/index.ts","../src/util/class-scope.ts","../src/util/expression-scope.ts","../src/parser/util.ts","../src/parser/node.ts","../src/parser/lval.ts","../src/plugins/typescript/index.ts","../src/plugins/placeholders.ts","../src/plugins/v8intrinsic.ts","../src/plugin-utils.ts","../src/parser/expression.ts","../src/parser/statement.ts","../src/parser/index.ts","../src/index.ts"],"sourcesContent":["export type Pos = {\n start: number;\n};\n\n// These are used when `options.locations` is on, for the\n// `startLoc` and `endLoc` properties.\n\nexport class Position {\n line: number;\n column: number;\n index: number;\n\n constructor(line: number, col: number, index: number) {\n this.line = line;\n this.column = col;\n this.index = index;\n }\n}\n\nexport class SourceLocation {\n start: Position;\n end: Position;\n filename: string | undefined;\n identifierName: string | undefined | null;\n\n constructor(start: Position, end?: Position) {\n this.start = start;\n // (may start as null, but initialized later)\n this.end = end!;\n }\n}\n\n/**\n * creates a new position with a non-zero column offset from the given position.\n * This function should be only be used when we create AST node out of the token\n * boundaries, such as TemplateElement ends before tt.templateNonTail. This\n * function does not skip whitespaces.\n */\nexport function createPositionWithColumnOffset(\n position: Position,\n columnOffset: number,\n) {\n const { line, column, index } = position;\n return new Position(line, column + columnOffset, index + columnOffset);\n}\n","import type { ParseErrorTemplates } from \"../parse-error.ts\";\n\nconst code = \"BABEL_PARSER_SOURCETYPE_MODULE_REQUIRED\";\n\nexport default {\n ImportMetaOutsideModule: {\n message: `import.meta may appear only with 'sourceType: \"module\"'`,\n code,\n },\n ImportOutsideModule: {\n message: `'import' and 'export' may appear only with 'sourceType: \"module\"'`,\n code,\n },\n} satisfies ParseErrorTemplates;\n","const NodeDescriptions = {\n ArrayPattern: \"array destructuring pattern\",\n AssignmentExpression: \"assignment expression\",\n AssignmentPattern: \"assignment expression\",\n ArrowFunctionExpression: \"arrow function expression\",\n ConditionalExpression: \"conditional expression\",\n CatchClause: \"catch clause\",\n ForOfStatement: \"for-of statement\",\n ForInStatement: \"for-in statement\",\n ForStatement: \"for-loop\",\n FormalParameters: \"function parameter list\",\n Identifier: \"identifier\",\n ImportSpecifier: \"import specifier\",\n ImportDefaultSpecifier: \"import default specifier\",\n ImportNamespaceSpecifier: \"import namespace specifier\",\n ObjectPattern: \"object destructuring pattern\",\n ParenthesizedExpression: \"parenthesized expression\",\n RestElement: \"rest element\",\n UpdateExpression: {\n true: \"prefix operation\",\n false: \"postfix operation\",\n },\n VariableDeclarator: \"variable declaration\",\n YieldExpression: \"yield expression\",\n};\n\ntype NodeTypesWithDescriptions = keyof Omit<\n typeof NodeDescriptions,\n \"UpdateExpression\"\n>;\n\ntype NodeWithDescription =\n | {\n type: \"UpdateExpression\";\n prefix: boolean;\n }\n | {\n type: NodeTypesWithDescriptions;\n };\n\nconst toNodeDescription = (node: NodeWithDescription) =>\n node.type === \"UpdateExpression\"\n ? NodeDescriptions.UpdateExpression[`${node.prefix}`]\n : NodeDescriptions[node.type];\n\nexport default toNodeDescription;\n","import type { ParseErrorTemplates } from \"../parse-error.ts\";\nimport toNodeDescription from \"./to-node-description.ts\";\n\nexport type LValAncestor =\n | { type: \"UpdateExpression\"; prefix: boolean }\n | {\n type:\n | \"ArrayPattern\"\n | \"AssignmentExpression\"\n | \"CatchClause\"\n | \"ForOfStatement\"\n | \"FormalParameters\"\n | \"ForInStatement\"\n | \"ForStatement\"\n | \"ImportSpecifier\"\n | \"ImportNamespaceSpecifier\"\n | \"ImportDefaultSpecifier\"\n | \"ParenthesizedExpression\"\n | \"ObjectPattern\"\n | \"RestElement\"\n | \"VariableDeclarator\";\n };\n\nexport default {\n AccessorIsGenerator: ({ kind }: { kind: \"get\" | \"set\" }) =>\n `A ${kind}ter cannot be a generator.`,\n ArgumentsInClass:\n \"'arguments' is only allowed in functions and class methods.\",\n AsyncFunctionInSingleStatementContext:\n \"Async functions can only be declared at the top level or inside a block.\",\n AwaitBindingIdentifier:\n \"Can not use 'await' as identifier inside an async function.\",\n AwaitBindingIdentifierInStaticBlock:\n \"Can not use 'await' as identifier inside a static block.\",\n AwaitExpressionFormalParameter:\n \"'await' is not allowed in async function parameters.\",\n AwaitUsingNotInAsyncContext:\n \"'await using' is only allowed within async functions and at the top levels of modules.\",\n AwaitNotInAsyncContext:\n \"'await' is only allowed within async functions and at the top levels of modules.\",\n BadGetterArity: \"A 'get' accessor must not have any formal parameters.\",\n BadSetterArity: \"A 'set' accessor must have exactly one formal parameter.\",\n BadSetterRestParameter:\n \"A 'set' accessor function argument must not be a rest parameter.\",\n ConstructorClassField: \"Classes may not have a field named 'constructor'.\",\n ConstructorClassPrivateField:\n \"Classes may not have a private field named '#constructor'.\",\n ConstructorIsAccessor: \"Class constructor may not be an accessor.\",\n ConstructorIsAsync: \"Constructor can't be an async function.\",\n ConstructorIsGenerator: \"Constructor can't be a generator.\",\n DeclarationMissingInitializer: ({\n kind,\n }: {\n kind: \"await using\" | \"const\" | \"destructuring\" | \"using\";\n }) => `Missing initializer in ${kind} declaration.`,\n DecoratorArgumentsOutsideParentheses:\n \"Decorator arguments must be moved inside parentheses: use '@(decorator(args))' instead of '@(decorator)(args)'.\",\n DecoratorBeforeExport:\n \"Decorators must be placed *before* the 'export' keyword. Remove the 'decoratorsBeforeExport: true' option to use the 'export @decorator class {}' syntax.\",\n DecoratorsBeforeAfterExport:\n \"Decorators can be placed *either* before or after the 'export' keyword, but not in both locations at the same time.\",\n DecoratorConstructor:\n \"Decorators can't be used with a constructor. Did you mean '@dec class { ... }'?\",\n DecoratorExportClass:\n \"Decorators must be placed *after* the 'export' keyword. Remove the 'decoratorsBeforeExport: false' option to use the '@decorator export class {}' syntax.\",\n DecoratorSemicolon: \"Decorators must not be followed by a semicolon.\",\n DecoratorStaticBlock: \"Decorators can't be used with a static block.\",\n DeferImportRequiresNamespace:\n 'Only `import defer * as x from \"./module\"` is valid.',\n DeletePrivateField: \"Deleting a private field is not allowed.\",\n DestructureNamedImport:\n \"ES2015 named imports do not destructure. Use another statement for destructuring after the import.\",\n DuplicateConstructor: \"Duplicate constructor in the same class.\",\n DuplicateDefaultExport: \"Only one default export allowed per module.\",\n DuplicateExport: ({ exportName }: { exportName: string }) =>\n `\\`${exportName}\\` has already been exported. Exported identifiers must be unique.`,\n DuplicateProto: \"Redefinition of __proto__ property.\",\n DuplicateRegExpFlags: \"Duplicate regular expression flag.\",\n ElementAfterRest: \"Rest element must be last element.\",\n EscapedCharNotAnIdentifier: \"Invalid Unicode escape.\",\n ExportBindingIsString: ({\n localName,\n exportName,\n }: {\n localName: string;\n exportName: string;\n }) =>\n `A string literal cannot be used as an exported binding without \\`from\\`.\\n- Did you mean \\`export { '${localName}' as '${exportName}' } from 'some-module'\\`?`,\n ExportDefaultFromAsIdentifier:\n \"'from' is not allowed as an identifier after 'export default'.\",\n\n ForInOfLoopInitializer: ({\n type,\n }: {\n type: \"ForInStatement\" | \"ForOfStatement\";\n }) =>\n `'${\n type === \"ForInStatement\" ? \"for-in\" : \"for-of\"\n }' loop variable declaration may not have an initializer.`,\n ForInUsing: \"For-in loop may not start with 'using' declaration.\",\n\n ForOfAsync: \"The left-hand side of a for-of loop may not be 'async'.\",\n ForOfLet: \"The left-hand side of a for-of loop may not start with 'let'.\",\n GeneratorInSingleStatementContext:\n \"Generators can only be declared at the top level or inside a block.\",\n\n IllegalBreakContinue: ({\n type,\n }: {\n type: \"BreakStatement\" | \"ContinueStatement\";\n }) => `Unsyntactic ${type === \"BreakStatement\" ? \"break\" : \"continue\"}.`,\n\n IllegalLanguageModeDirective:\n \"Illegal 'use strict' directive in function with non-simple parameter list.\",\n IllegalReturn: \"'return' outside of function.\",\n ImportAttributesUseAssert:\n \"The `assert` keyword in import attributes is deprecated and it has been replaced by the `with` keyword. You can enable the `deprecatedImportAssert` parser plugin to suppress this error.\",\n ImportBindingIsString: ({ importName }: { importName: string }) =>\n `A string literal cannot be used as an imported binding.\\n- Did you mean \\`import { \"${importName}\" as foo }\\`?`,\n ImportCallArity: `\\`import()\\` requires exactly one or two arguments.`,\n ImportCallNotNewExpression: \"Cannot use new with import(...).\",\n ImportCallSpreadArgument: \"`...` is not allowed in `import()`.\",\n ImportJSONBindingNotDefault:\n \"A JSON module can only be imported with `default`.\",\n ImportReflectionHasAssertion: \"`import module x` cannot have assertions.\",\n ImportReflectionNotBinding:\n 'Only `import module x from \"./module\"` is valid.',\n IncompatibleRegExpUVFlags:\n \"The 'u' and 'v' regular expression flags cannot be enabled at the same time.\",\n InvalidBigIntLiteral: \"Invalid BigIntLiteral.\",\n InvalidCodePoint: \"Code point out of bounds.\",\n InvalidCoverDiscardElement:\n \"'void' must be followed by an expression when not used in a binding position.\",\n InvalidCoverInitializedName: \"Invalid shorthand property initializer.\",\n InvalidDecimal: \"Invalid decimal.\",\n InvalidDigit: ({ radix }: { radix: number }) =>\n `Expected number in radix ${radix}.`,\n InvalidEscapeSequence: \"Bad character escape sequence.\",\n InvalidEscapeSequenceTemplate: \"Invalid escape sequence in template.\",\n InvalidEscapedReservedWord: ({ reservedWord }: { reservedWord: string }) =>\n `Escape sequence in keyword ${reservedWord}.`,\n InvalidIdentifier: ({ identifierName }: { identifierName: string }) =>\n `Invalid identifier ${identifierName}.`,\n InvalidLhs: ({ ancestor }: { ancestor: LValAncestor }) =>\n `Invalid left-hand side in ${toNodeDescription(ancestor)}.`,\n InvalidLhsBinding: ({ ancestor }: { ancestor: LValAncestor }) =>\n `Binding invalid left-hand side in ${toNodeDescription(ancestor)}.`,\n InvalidLhsOptionalChaining: ({ ancestor }: { ancestor: LValAncestor }) =>\n `Invalid optional chaining in the left-hand side of ${toNodeDescription(\n ancestor,\n )}.`,\n InvalidNumber: \"Invalid number.\",\n InvalidOrMissingExponent:\n \"Floating-point numbers require a valid exponent after the 'e'.\",\n InvalidOrUnexpectedToken: ({ unexpected }: { unexpected: string }) =>\n `Unexpected character '${unexpected}'.`,\n InvalidParenthesizedAssignment: \"Invalid parenthesized assignment pattern.\",\n InvalidPrivateFieldResolution: ({\n identifierName,\n }: {\n identifierName: string;\n }) => `Private name #${identifierName} is not defined.`,\n InvalidPropertyBindingPattern: \"Binding member expression.\",\n InvalidRecordProperty:\n \"Only properties and spread elements are allowed in record definitions.\",\n InvalidRestAssignmentPattern: \"Invalid rest operator's argument.\",\n LabelRedeclaration: ({ labelName }: { labelName: string }) =>\n `Label '${labelName}' is already declared.`,\n LetInLexicalBinding: \"'let' is disallowed as a lexically bound name.\",\n LineTerminatorBeforeArrow: \"No line break is allowed before '=>'.\",\n MalformedRegExpFlags: \"Invalid regular expression flag.\",\n MissingClassName: \"A class name is required.\",\n MissingEqInAssignment:\n \"Only '=' operator can be used for specifying default value.\",\n MissingSemicolon: \"Missing semicolon.\",\n MissingPlugin: ({ missingPlugin }: { missingPlugin: [string] }) =>\n `This experimental syntax requires enabling the parser plugin: ${missingPlugin\n .map(name => JSON.stringify(name))\n .join(\", \")}.`,\n // FIXME: Would be nice to make this \"missingPlugins\" instead.\n // Also, seems like we can drop the \"(s)\" from the message and just make it \"s\".\n MissingOneOfPlugins: ({ missingPlugin }: { missingPlugin: string[] }) =>\n `This experimental syntax requires enabling one of the following parser plugin(s): ${missingPlugin\n .map(name => JSON.stringify(name))\n .join(\", \")}.`,\n MissingUnicodeEscape: \"Expecting Unicode escape sequence \\\\uXXXX.\",\n MixingCoalesceWithLogical:\n \"Nullish coalescing operator(??) requires parens when mixing with logical operators.\",\n ModuleAttributeDifferentFromType:\n \"The only accepted module attribute is `type`.\",\n ModuleAttributeInvalidValue:\n \"Only string literals are allowed as module attribute values.\",\n ModuleAttributesWithDuplicateKeys: ({ key }: { key: string }) =>\n `Duplicate key \"${key}\" is not allowed in module attributes.`,\n ModuleExportNameHasLoneSurrogate: ({\n surrogateCharCode,\n }: {\n surrogateCharCode: number;\n }) =>\n `An export name cannot include a lone surrogate, found '\\\\u${surrogateCharCode.toString(\n 16,\n )}'.`,\n ModuleExportUndefined: ({ localName }: { localName: string }) =>\n `Export '${localName}' is not defined.`,\n MultipleDefaultsInSwitch: \"Multiple default clauses.\",\n NewlineAfterThrow: \"Illegal newline after throw.\",\n NoCatchOrFinally: \"Missing catch or finally clause.\",\n NumberIdentifier: \"Identifier directly after number.\",\n NumericSeparatorInEscapeSequence:\n \"Numeric separators are not allowed inside unicode escape sequences or hex escape sequences.\",\n ObsoleteAwaitStar:\n \"'await*' has been removed from the async functions proposal. Use Promise.all() instead.\",\n OptionalChainingNoNew:\n \"Constructors in/after an Optional Chain are not allowed.\",\n OptionalChainingNoTemplate:\n \"Tagged Template Literals are not allowed in optionalChain.\",\n OverrideOnConstructor:\n \"'override' modifier cannot appear on a constructor declaration.\",\n ParamDupe: \"Argument name clash.\",\n PatternHasAccessor: \"Object pattern can't contain getter or setter.\",\n PatternHasMethod: \"Object pattern can't contain methods.\",\n PrivateInExpectedIn: ({ identifierName }: { identifierName: string }) =>\n `Private names are only allowed in property accesses (\\`obj.#${identifierName}\\`) or in \\`in\\` expressions (\\`#${identifierName} in obj\\`).`,\n PrivateNameRedeclaration: ({ identifierName }: { identifierName: string }) =>\n `Duplicate private name #${identifierName}.`,\n RecordExpressionBarIncorrectEndSyntaxType:\n \"Record expressions ending with '|}' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'bar'.\",\n RecordExpressionBarIncorrectStartSyntaxType:\n \"Record expressions starting with '{|' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'bar'.\",\n RecordExpressionHashIncorrectStartSyntaxType:\n \"Record expressions starting with '#{' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'hash'.\",\n RecordNoProto: \"'__proto__' is not allowed in Record expressions.\",\n RestTrailingComma: \"Unexpected trailing comma after rest element.\",\n SloppyFunction:\n \"In non-strict mode code, functions can only be declared at top level or inside a block.\",\n SloppyFunctionAnnexB:\n \"In non-strict mode code, functions can only be declared at top level, inside a block, or as the body of an if statement.\",\n SourcePhaseImportRequiresDefault:\n 'Only `import source x from \"./module\"` is valid.',\n StaticPrototype: \"Classes may not have static property named prototype.\",\n SuperNotAllowed:\n \"`super()` is only valid inside a class constructor of a subclass. Maybe a typo in the method name ('constructor') or not extending another class?\",\n SuperPrivateField: \"Private fields can't be accessed on super.\",\n TrailingDecorator: \"Decorators must be attached to a class element.\",\n TupleExpressionBarIncorrectEndSyntaxType:\n \"Tuple expressions ending with '|]' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'bar'.\",\n TupleExpressionBarIncorrectStartSyntaxType:\n \"Tuple expressions starting with '[|' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'bar'.\",\n TupleExpressionHashIncorrectStartSyntaxType:\n \"Tuple expressions starting with '#[' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'hash'.\",\n UnexpectedArgumentPlaceholder: \"Unexpected argument placeholder.\",\n UnexpectedAwaitAfterPipelineBody:\n 'Unexpected \"await\" after pipeline body; await must have parentheses in minimal proposal.',\n UnexpectedDigitAfterHash: \"Unexpected digit after hash token.\",\n UnexpectedImportExport:\n \"'import' and 'export' may only appear at the top level.\",\n UnexpectedKeyword: ({ keyword }: { keyword: string }) =>\n `Unexpected keyword '${keyword}'.`,\n UnexpectedLeadingDecorator:\n \"Leading decorators must be attached to a class declaration.\",\n UnexpectedLexicalDeclaration:\n \"Lexical declaration cannot appear in a single-statement context.\",\n UnexpectedNewTarget:\n \"`new.target` can only be used in functions or class properties.\",\n UnexpectedNumericSeparator:\n \"A numeric separator is only allowed between two digits.\",\n UnexpectedPrivateField: \"Unexpected private name.\",\n UnexpectedReservedWord: ({ reservedWord }: { reservedWord: string }) =>\n `Unexpected reserved word '${reservedWord}'.`,\n UnexpectedSuper: \"'super' is only allowed in object methods and classes.\",\n UnexpectedToken: ({\n expected,\n unexpected,\n }: {\n expected?: string | null;\n unexpected?: string | null;\n }) =>\n `Unexpected token${unexpected ? ` '${unexpected}'.` : \"\"}${\n expected ? `, expected \"${expected}\"` : \"\"\n }`,\n UnexpectedTokenUnaryExponentiation:\n \"Illegal expression. Wrap left hand side or entire exponentiation in parentheses.\",\n UnexpectedUsingDeclaration:\n \"Using declaration cannot appear in the top level when source type is `script` or in the bare case statement.\",\n UnexpectedVoidPattern: \"Unexpected void binding.\",\n UnsupportedBind: \"Binding should be performed on object property.\",\n UnsupportedDecoratorExport:\n \"A decorated export must export a class declaration.\",\n UnsupportedDefaultExport:\n \"Only expressions, functions or classes are allowed as the `default` export.\",\n UnsupportedImport:\n \"`import` can only be used in `import()` or `import.meta`.\",\n UnsupportedMetaProperty: ({\n target,\n onlyValidPropertyName,\n }: {\n target: string;\n onlyValidPropertyName: string;\n }) =>\n `The only valid meta property for ${target} is ${target}.${onlyValidPropertyName}.`,\n UnsupportedParameterDecorator:\n \"Decorators cannot be used to decorate parameters.\",\n UnsupportedPropertyDecorator:\n \"Decorators cannot be used to decorate object literal properties.\",\n UnsupportedSuper:\n \"'super' can only be used with function calls (i.e. super()) or in property accesses (i.e. super.prop or super[prop]).\",\n UnterminatedComment: \"Unterminated comment.\",\n UnterminatedRegExp: \"Unterminated regular expression.\",\n UnterminatedString: \"Unterminated string constant.\",\n UnterminatedTemplate: \"Unterminated template.\",\n UsingDeclarationExport: \"Using declaration cannot be exported.\",\n UsingDeclarationHasBindingPattern:\n \"Using declaration cannot have destructuring patterns.\",\n VarRedeclaration: ({ identifierName }: { identifierName: string }) =>\n `Identifier '${identifierName}' has already been declared.`,\n VoidPatternCatchClauseParam:\n \"A void binding can not be the catch clause parameter. Use `try { ... } catch { ... }` if you want to discard the caught error.\",\n VoidPatternInitializer: \"A void binding may not have an initializer.\",\n YieldBindingIdentifier:\n \"Can not use 'yield' as identifier inside a generator.\",\n YieldInParameter: \"Yield expression is not allowed in formal parameters.\",\n YieldNotInGeneratorFunction:\n \"'yield' is only allowed within generator functions.\",\n ZeroDigitNumericSeparator:\n \"Numeric separator can not be used after leading 0.\",\n} satisfies ParseErrorTemplates;\n","import type { ParseErrorTemplates } from \"../parse-error\";\n\nexport default {\n StrictDelete: \"Deleting local variable in strict mode.\",\n\n // `referenceName` is the StringValue[1] of an IdentifierReference[2], which\n // is represented as just an `Identifier`[3] in the Babel AST.\n // 1. https://tc39.es/ecma262/#sec-static-semantics-stringvalue\n // 2. https://tc39.es/ecma262/#prod-IdentifierReference\n // 3. https://github.com/babel/babel/blob/main/packages/babel-parser/ast/spec.md#identifier\n StrictEvalArguments: ({ referenceName }: { referenceName: string }) =>\n `Assigning to '${referenceName}' in strict mode.`,\n\n // `bindingName` is the StringValue[1] of a BindingIdentifier[2], which is\n // represented as just an `Identifier`[3] in the Babel AST.\n // 1. https://tc39.es/ecma262/#sec-static-semantics-stringvalue\n // 2. https://tc39.es/ecma262/#prod-BindingIdentifier\n // 3. https://github.com/babel/babel/blob/main/packages/babel-parser/ast/spec.md#identifier\n StrictEvalArgumentsBinding: ({ bindingName }: { bindingName: string }) =>\n `Binding '${bindingName}' in strict mode.`,\n\n StrictFunction:\n \"In strict mode code, functions can only be declared at top level or inside a block.\",\n\n StrictNumericEscape: \"The only valid numeric escape in strict mode is '\\\\0'.\",\n\n StrictOctalLiteral: \"Legacy octal literals are not allowed in strict mode.\",\n\n StrictWith: \"'with' in strict mode.\",\n} satisfies ParseErrorTemplates;\n","import type { ParseErrorTemplates } from \"../parse-error.ts\";\n\nexport default {\n ParseExpressionEmptyInput:\n \"Unexpected parseExpression() input: The input is empty or contains only comments.\",\n ParseExpressionExpectsEOF: ({ unexpected }: { unexpected: number }) =>\n `Unexpected parseExpression() input: The input should contain exactly one expression, but the first expression is followed by the unexpected character \\`${String.fromCodePoint(unexpected)}\\`.`,\n} satisfies ParseErrorTemplates;\n","import type { ParseErrorTemplates } from \"../parse-error.ts\";\nimport toNodeDescription from \"./to-node-description.ts\";\n\nexport const UnparenthesizedPipeBodyDescriptions = new Set([\n \"ArrowFunctionExpression\",\n \"AssignmentExpression\",\n \"ConditionalExpression\",\n \"YieldExpression\",\n] as const);\n\ntype GetSetMemberType> =\n T extends Set ? M : unknown;\n\nexport type UnparenthesizedPipeBodyTypes = GetSetMemberType<\n typeof UnparenthesizedPipeBodyDescriptions\n>;\n\nexport default {\n // This error is only used by the smart-mix proposal\n PipeBodyIsTighter:\n \"Unexpected yield after pipeline body; any yield expression acting as Hack-style pipe body must be parenthesized due to its loose operator precedence.\",\n PipeTopicRequiresHackPipes: process.env.BABEL_8_BREAKING\n ? 'Topic references are only supported when using the `\"proposal\": \"hack\"` version of the pipeline proposal.'\n : 'Topic reference is used, but the pipelineOperator plugin was not passed a \"proposal\": \"hack\" or \"smart\" option.',\n PipeTopicUnbound:\n \"Topic reference is unbound; it must be inside a pipe body.\",\n PipeTopicUnconfiguredToken: ({ token }: { token: string }) =>\n `Invalid topic token ${token}. In order to use ${token} as a topic reference, the pipelineOperator plugin must be configured with { \"proposal\": \"hack\", \"topicToken\": \"${token}\" }.`,\n PipeTopicUnused:\n \"Hack-style pipe body does not contain a topic reference; Hack-style pipes must use topic at least once.\",\n PipeUnparenthesizedBody: ({ type }: { type: UnparenthesizedPipeBodyTypes }) =>\n `Hack-style pipe body cannot be an unparenthesized ${toNodeDescription({\n type,\n })}; please wrap it in parentheses.`,\n\n ...(process.env.BABEL_8_BREAKING\n ? {}\n : {\n // Messages whose codes start with “Pipeline” or “PrimaryTopic”\n // are retained for backwards compatibility\n // with the deprecated smart-mix pipe operator proposal plugin.\n // They are subject to removal in a future major version.\n PipelineBodyNoArrow:\n 'Unexpected arrow \"=>\" after pipeline body; arrow function in pipeline body must be parenthesized.',\n PipelineBodySequenceExpression:\n \"Pipeline body may not be a comma-separated sequence expression.\",\n PipelineHeadSequenceExpression:\n \"Pipeline head should not be a comma-separated sequence expression.\",\n PipelineTopicUnused:\n \"Pipeline is in topic style but does not use topic reference.\",\n PrimaryTopicNotAllowed:\n \"Topic reference was used in a lexical context without topic binding.\",\n PrimaryTopicRequiresSmartPipeline:\n 'Topic reference is used, but the pipelineOperator plugin was not passed a \"proposal\": \"hack\" or \"smart\" option.',\n }),\n} satisfies ParseErrorTemplates;\n","import { Position } from \"./util/location.ts\";\n\ntype SyntaxPlugin =\n | \"flow\"\n | \"typescript\"\n | \"jsx\"\n | \"pipelineOperator\"\n | \"placeholders\";\n\ntype ParseErrorCode =\n | \"BABEL_PARSER_SYNTAX_ERROR\"\n | \"BABEL_PARSER_SOURCETYPE_MODULE_REQUIRED\";\n\n// Babel uses \"normal\" SyntaxErrors for it's errors, but adds some extra\n// functionality. This functionality is defined in the\n// `ParseErrorSpecification` interface below. We may choose to change to someday\n// give our errors their own full-blown class, but until then this allow us to\n// keep all the desirable properties of SyntaxErrors (like their name in stack\n// traces, etc.), and also allows us to punt on any publicly facing\n// class-hierarchy decisions until Babel 8.\ninterface ParseErrorSpecification {\n // Look, these *could* be readonly, but then Flow complains when we initially\n // set them. We could do a whole dance and make a special interface that's not\n // readonly for when we create the error, then cast it to the readonly\n // interface for public use, but the previous implementation didn't have them\n // as readonly, so let's just not worry about it for now.\n code: ParseErrorCode;\n reasonCode: string;\n syntaxPlugin?: SyntaxPlugin;\n missingPlugin?: string | string[];\n loc: Position;\n details: ErrorDetails;\n\n // We should consider removing this as it now just contains the same\n // information as `loc.index`.\n pos: number;\n}\n\nexport type ParseError = SyntaxError &\n ParseErrorSpecification;\n\n// By `ParseErrorConstructor`, we mean something like the new-less style\n// `ErrorConstructor`[1], since `ParseError`'s are not themselves actually\n// separate classes from `SyntaxError`'s.\n//\n// 1. https://github.com/microsoft/TypeScript/blob/v4.5.5/lib/lib.es5.d.ts#L1027\nexport type ParseErrorConstructor = (\n loc: Position,\n details: ErrorDetails,\n) => ParseError;\n\ntype ToMessage = (self: ErrorDetails) => string;\n\ntype ParseErrorCredentials = {\n code: string;\n reasonCode: string;\n syntaxPlugin?: SyntaxPlugin;\n toMessage: ToMessage;\n};\n\nfunction defineHidden(obj: object, key: string, value: unknown) {\n Object.defineProperty(obj, key, {\n enumerable: false,\n configurable: true,\n value,\n });\n}\n\nfunction toParseErrorConstructor({\n toMessage,\n code,\n reasonCode,\n syntaxPlugin,\n}: ParseErrorCredentials): ParseErrorConstructor {\n const hasMissingPlugin =\n reasonCode === \"MissingPlugin\" || reasonCode === \"MissingOneOfPlugins\";\n\n if (!process.env.BABEL_8_BREAKING) {\n const oldReasonCodes: Record = {\n AccessorCannotDeclareThisParameter: \"AccesorCannotDeclareThisParameter\",\n AccessorCannotHaveTypeParameters: \"AccesorCannotHaveTypeParameters\",\n ConstInitializerMustBeStringOrNumericLiteralOrLiteralEnumReference:\n \"ConstInitiailizerMustBeStringOrNumericLiteralOrLiteralEnumReference\",\n SetAccessorCannotHaveOptionalParameter:\n \"SetAccesorCannotHaveOptionalParameter\",\n SetAccessorCannotHaveRestParameter: \"SetAccesorCannotHaveRestParameter\",\n SetAccessorCannotHaveReturnType: \"SetAccesorCannotHaveReturnType\",\n };\n if (oldReasonCodes[reasonCode]) {\n reasonCode = oldReasonCodes[reasonCode];\n }\n }\n\n return function constructor(loc: Position, details: ErrorDetails) {\n const error: ParseError = new SyntaxError() as any;\n\n error.code = code as ParseErrorCode;\n error.reasonCode = reasonCode;\n error.loc = loc;\n error.pos = loc.index;\n\n error.syntaxPlugin = syntaxPlugin;\n if (hasMissingPlugin) {\n error.missingPlugin = (details as any).missingPlugin;\n }\n\n type Overrides = {\n loc?: Position;\n details?: ErrorDetails;\n };\n defineHidden(error, \"clone\", function clone(overrides: Overrides = {}) {\n const { line, column, index } = overrides.loc ?? loc;\n return constructor(new Position(line, column, index), {\n ...details,\n ...overrides.details,\n });\n });\n\n defineHidden(error, \"details\", details);\n\n Object.defineProperty(error, \"message\", {\n configurable: true,\n get(this: ParseError): string {\n const message = `${toMessage(details)} (${loc.line}:${loc.column})`;\n this.message = message;\n return message;\n },\n set(value: string) {\n Object.defineProperty(this, \"message\", { value, writable: true });\n },\n });\n\n return error;\n };\n}\n\ntype ParseErrorTemplate =\n | string\n | ToMessage\n | { message: string | ToMessage; code?: ParseErrorCode };\n\nexport type ParseErrorTemplates = Record;\n\n// This is the templated form of `ParseErrorEnum`.\n//\n// Note: We could factor out the return type calculation into something like\n// `ParseErrorConstructor`, and then we could\n// reuse it in the non-templated form of `ParseErrorEnum`, but TypeScript\n// doesn't seem to drill down that far when showing you the computed type of\n// an object in an editor, so we'll leave it inlined for now.\nexport function ParseErrorEnum(a: TemplateStringsArray): <\n T extends ParseErrorTemplates,\n>(\n parseErrorTemplates: T,\n) => {\n [K in keyof T]: ParseErrorConstructor<\n T[K] extends { message: string | ToMessage }\n ? T[K][\"message\"] extends ToMessage\n ? Parameters[0]\n : object\n : T[K] extends ToMessage\n ? Parameters[0]\n : object\n >;\n};\n\nexport function ParseErrorEnum(\n parseErrorTemplates: T,\n syntaxPlugin?: SyntaxPlugin,\n): {\n [K in keyof T]: ParseErrorConstructor<\n T[K] extends { message: string | ToMessage }\n ? T[K][\"message\"] extends ToMessage\n ? Parameters[0]\n : object\n : T[K] extends ToMessage\n ? Parameters[0]\n : object\n >;\n};\n\n// You call `ParseErrorEnum` with a mapping from `ReasonCode`'s to either:\n//\n// 1. a static error message,\n// 2. `toMessage` functions that define additional necessary `details` needed by\n// the `ParseError`, or\n// 3. Objects that contain a `message` of one of the above and overridden `code`\n// and/or `reasonCode`:\n//\n// ParseErrorEnum `optionalSyntaxPlugin` ({\n// ErrorWithStaticMessage: \"message\",\n// ErrorWithDynamicMessage: ({ type } : { type: string }) => `${type}`),\n// ErrorWithOverriddenCodeAndOrReasonCode: {\n// message: ({ type }: { type: string }) => `${type}`),\n// code: \"AN_ERROR_CODE\",\n// ...(BABEL_8_BREAKING ? { } : { reasonCode: \"CustomErrorReasonCode\" })\n// }\n// });\n//\nexport function ParseErrorEnum(\n argument: TemplateStringsArray | ParseErrorTemplates,\n syntaxPlugin?: SyntaxPlugin,\n) {\n // If the first parameter is an array, that means we were called with a tagged\n // template literal. Extract the syntaxPlugin from this, and call again in\n // the \"normalized\" form.\n if (Array.isArray(argument)) {\n return (parseErrorTemplates: ParseErrorTemplates) =>\n ParseErrorEnum(parseErrorTemplates, argument[0]);\n }\n\n const ParseErrorConstructors = {} as Record<\n string,\n ParseErrorConstructor\n >;\n\n for (const reasonCode of Object.keys(argument)) {\n const template = (argument as ParseErrorTemplates)[reasonCode];\n const { message, ...rest } =\n typeof template === \"string\"\n ? { message: () => template }\n : typeof template === \"function\"\n ? { message: template }\n : template;\n const toMessage = typeof message === \"string\" ? () => message : message;\n\n ParseErrorConstructors[reasonCode] = toParseErrorConstructor({\n code: \"BABEL_PARSER_SYNTAX_ERROR\",\n reasonCode,\n toMessage,\n ...(syntaxPlugin ? { syntaxPlugin } : {}),\n ...rest,\n });\n }\n\n return ParseErrorConstructors;\n}\n\nimport ModuleErrors from \"./parse-error/module-errors.ts\";\nimport StandardErrors from \"./parse-error/standard-errors.ts\";\nimport StrictModeErrors from \"./parse-error/strict-mode-errors.ts\";\nimport ParseExpressionErrors from \"./parse-error/parse-expression-errors.ts\";\nimport PipelineOperatorErrors from \"./parse-error/pipeline-operator-errors.ts\";\n\nexport const Errors = {\n ...ParseErrorEnum(ModuleErrors),\n ...ParseErrorEnum(StandardErrors),\n ...ParseErrorEnum(StrictModeErrors),\n ...ParseErrorEnum(ParseExpressionErrors),\n ...ParseErrorEnum`pipelineOperator`(PipelineOperatorErrors),\n};\n\nexport type { LValAncestor } from \"./parse-error/standard-errors.ts\";\n","import type { Plugin } from \"./plugin-utils.ts\";\n\n// A second optional argument can be given to further configure\n// the parser process. These options are recognized:\n\nexport type SourceType = \"script\" | \"commonjs\" | \"module\" | \"unambiguous\";\n\nexport interface Options {\n /**\n * By default, import and export declarations can only appear at a program's top level.\n * Setting this option to true allows them anywhere where a statement is allowed.\n */\n allowImportExportEverywhere?: boolean;\n\n /**\n * By default, await use is not allowed outside of an async function.\n * Set this to true to accept such code.\n */\n allowAwaitOutsideFunction?: boolean;\n\n /**\n * By default, a return statement at the top level raises an error.\n * Set this to true to accept such code.\n */\n allowReturnOutsideFunction?: boolean;\n\n /**\n * By default, new.target use is not allowed outside of a function or class.\n * Set this to true to accept such code.\n */\n allowNewTargetOutsideFunction?: boolean;\n\n /**\n * By default, super calls are not allowed outside of a method.\n * Set this to true to accept such code.\n */\n allowSuperOutsideMethod?: boolean;\n\n /**\n * By default, exported identifiers must refer to a declared variable.\n * Set this to true to allow export statements to reference undeclared variables.\n */\n allowUndeclaredExports?: boolean;\n\n /**\n * By default, yield use is not allowed outside of a generator function.\n * Set this to true to accept such code.\n */\n\n allowYieldOutsideFunction?: boolean;\n\n /**\n * By default, Babel parser JavaScript code according to Annex B syntax.\n * Set this to `false` to disable such behavior.\n */\n annexB?: boolean;\n\n /**\n * By default, Babel attaches comments to adjacent AST nodes.\n * When this option is set to false, comments are not attached.\n * It can provide up to 30% performance improvement when the input code has many comments.\n * @babel/eslint-parser will set it for you.\n * It is not recommended to use attachComment: false with Babel transform,\n * as doing so removes all the comments in output code, and renders annotations such as\n * /* istanbul ignore next *\\/ nonfunctional.\n */\n attachComment?: boolean;\n\n /**\n * By default, Babel always throws an error when it finds some invalid code.\n * When this option is set to true, it will store the parsing error and\n * try to continue parsing the invalid input file.\n */\n errorRecovery?: boolean;\n\n /**\n * Indicate the mode the code should be parsed in.\n * Can be one of \"script\", \"commonjs\", \"module\", or \"unambiguous\". Defaults to \"script\".\n * \"unambiguous\" will make @babel/parser attempt to guess, based on the presence\n * of ES6 import or export statements.\n * Files with ES6 imports and exports are considered \"module\" and are otherwise \"script\".\n *\n * Use \"commonjs\" to parse code that is intended to be run in a CommonJS environment such as Node.js.\n */\n sourceType?: SourceType;\n\n /**\n * Correlate output AST nodes with their source filename.\n * Useful when generating code and source maps from the ASTs of multiple input files.\n */\n sourceFilename?: string;\n\n /**\n * By default, all source indexes start from 0.\n * You can provide a start index to alternatively start with.\n * Useful for integration with other source tools.\n */\n startIndex?: number;\n\n /**\n * By default, the first line of code parsed is treated as line 1.\n * You can provide a line number to alternatively start with.\n * Useful for integration with other source tools.\n */\n startLine?: number;\n\n /**\n * By default, the parsed code is treated as if it starts from line 1, column 0.\n * You can provide a column number to alternatively start with.\n * Useful for integration with other source tools.\n */\n startColumn?: number;\n\n /**\n * Array containing the plugins that you want to enable.\n */\n plugins?: Plugin[];\n\n /**\n * Should the parser work in strict mode.\n * Defaults to true if sourceType === 'module'. Otherwise, false.\n */\n strictMode?: boolean;\n\n /**\n * Adds a ranges property to each node: [node.start, node.end]\n */\n ranges?: boolean;\n\n /**\n * Adds all parsed tokens to a tokens property on the File node.\n */\n tokens?: boolean;\n\n /**\n * By default, the parser adds information about parentheses by setting\n * `extra.parenthesized` to `true` as needed.\n * When this option is `true` the parser creates `ParenthesizedExpression`\n * AST nodes instead of using the `extra` property.\n */\n createParenthesizedExpressions?: boolean;\n\n /**\n * The default is false in Babel 7 and true in Babel 8\n * Set this to true to parse it as an `ImportExpression` node.\n * Otherwise `import(foo)` is parsed as `CallExpression(Import, [Identifier(foo)])`.\n */\n createImportExpressions?: boolean;\n}\n\nexport const enum OptionFlags {\n AllowAwaitOutsideFunction = 1 << 0,\n AllowReturnOutsideFunction = 1 << 1,\n AllowNewTargetOutsideFunction = 1 << 2,\n AllowImportExportEverywhere = 1 << 3,\n AllowSuperOutsideMethod = 1 << 4,\n AllowYieldOutsideFunction = 1 << 5,\n AllowUndeclaredExports = 1 << 6,\n Ranges = 1 << 7,\n Tokens = 1 << 8,\n CreateImportExpressions = 1 << 9,\n CreateParenthesizedExpressions = 1 << 10,\n ErrorRecovery = 1 << 11,\n AttachComment = 1 << 12,\n AnnexB = 1 << 13,\n}\n\ntype KeepOptionalKeys = \"sourceFilename\" | \"strictMode\";\nexport type OptionsWithDefaults = Omit, KeepOptionalKeys> &\n Pick;\n\nfunction createDefaultOptions(): OptionsWithDefaults {\n return {\n // Source type (\"script\" or \"module\") for different semantics\n sourceType: \"script\",\n // Source filename.\n sourceFilename: undefined,\n // Index (0-based) from which to start counting source. Useful for\n // integration with other tools.\n startIndex: 0,\n // Column (0-based) from which to start counting source. Useful for\n // integration with other tools.\n startColumn: 0,\n // Line (1-based) from which to start counting source. Useful for\n // integration with other tools.\n startLine: 1,\n // When enabled, await at the top level is not considered an\n // error.\n allowAwaitOutsideFunction: false,\n // When enabled, a return at the top level is not considered an\n // error.\n allowReturnOutsideFunction: false,\n // When enabled, new.target outside a function or class is not\n // considered an error.\n allowNewTargetOutsideFunction: false,\n // When enabled, import/export statements are not constrained to\n // appearing at the top of the program.\n allowImportExportEverywhere: false,\n // When enabled, super outside a method is not considered an error.\n allowSuperOutsideMethod: false,\n // When enabled, export statements can reference undeclared variables.\n allowUndeclaredExports: false,\n allowYieldOutsideFunction: false,\n // An array of plugins to enable\n plugins: [],\n // TODO\n strictMode: undefined,\n // Nodes have their start and end characters offsets recorded in\n // `start` and `end` properties (directly on the node, rather than\n // the `loc` object, which holds line/column data. To also add a\n // [semi-standardized][range] `range` property holding a `[start,\n // end]` array with the same numbers, set the `ranges` option to\n // `true`.\n //\n // [range]: https://bugzilla.mozilla.org/show_bug.cgi?id=745678\n ranges: false,\n // Adds all parsed tokens to a `tokens` property on the `File` node\n tokens: false,\n // Whether to create ImportExpression AST nodes (if false\n // `import(foo)` will be parsed as CallExpression(Import, [Identifier(foo)])\n createImportExpressions: process.env.BABEL_8_BREAKING ? true : false,\n // Whether to create ParenthesizedExpression AST nodes (if false\n // the parser sets extra.parenthesized on the expression nodes instead).\n createParenthesizedExpressions: false,\n // When enabled, errors are attached to the AST instead of being directly thrown.\n // Some errors will still throw, because @babel/parser can't always recover.\n errorRecovery: false,\n // When enabled, comments will be attached to adjacent AST nodes as one of\n // `leadingComments`, `trailingComments` and `innerComments`. The comment attachment\n // is vital to preserve comments after transform. If you don't print AST back,\n // consider set this option to `false` for performance\n attachComment: true,\n // When enabled, the parser will support Annex B syntax.\n // https://tc39.es/ecma262/#sec-additional-ecmascript-features-for-web-browsers\n annexB: true,\n };\n}\n\n// Interpret and default an options object\n\nexport function getOptions(opts?: Options | null): OptionsWithDefaults {\n // https://github.com/babel/babel/pull/16918\n // `options` is accessed frequently, please make sure it is a fast object.\n // `%ToFastProperties` can make it a fast object, but the performance is the same as the slow object.\n const options: any = createDefaultOptions();\n\n if (opts == null) {\n return options;\n }\n if (opts.annexB != null && opts.annexB !== false) {\n throw new Error(\"The `annexB` option can only be set to `false`.\");\n }\n\n for (const key of Object.keys(options) as (keyof Options)[]) {\n if (opts[key] != null) options[key] = opts[key];\n }\n\n if (options.startLine === 1) {\n if (opts.startIndex == null && options.startColumn > 0) {\n options.startIndex = options.startColumn;\n } else if (opts.startColumn == null && options.startIndex > 0) {\n options.startColumn = options.startIndex;\n }\n } else if (opts.startColumn == null || opts.startIndex == null) {\n if (opts.startIndex != null || process.env.BABEL_8_BREAKING) {\n throw new Error(\n \"With a `startLine > 1` you must also specify `startIndex` and `startColumn`.\",\n );\n }\n }\n\n if (options.sourceType === \"commonjs\") {\n if (opts.allowAwaitOutsideFunction != null) {\n throw new Error(\n \"The `allowAwaitOutsideFunction` option cannot be used with `sourceType: 'commonjs'`.\",\n );\n }\n if (opts.allowReturnOutsideFunction != null) {\n throw new Error(\n \"`sourceType: 'commonjs'` implies `allowReturnOutsideFunction: true`, please remove the `allowReturnOutsideFunction` option or use `sourceType: 'script'`.\",\n );\n }\n if (opts.allowNewTargetOutsideFunction != null) {\n throw new Error(\n \"`sourceType: 'commonjs'` implies `allowNewTargetOutsideFunction: true`, please remove the `allowNewTargetOutsideFunction` option or use `sourceType: 'script'`.\",\n );\n }\n }\n\n return options;\n}\n","import type { TokenType } from \"../tokenizer/types.ts\";\nimport type Parser from \"../parser/index.ts\";\nimport type * as N from \"../types.ts\";\nimport type { Node as NodeType, NodeBase } from \"../types.ts\";\nimport type { Position } from \"../util/location.ts\";\nimport { Errors } from \"../parse-error.ts\";\nimport type { Undone } from \"../parser/node.ts\";\nimport type { BindingFlag } from \"../util/scopeflags.ts\";\nimport { OptionFlags } from \"../options.ts\";\nimport type { ExpressionErrors } from \"../parser/util.ts\";\nimport type { ParseResult, File } from \"../index.ts\";\n\nconst { defineProperty } = Object;\nconst toUnenumerable = (object: any, key: string) => {\n if (object) {\n defineProperty(object, key, { enumerable: false, value: object[key] });\n }\n};\n\nfunction toESTreeLocation(node: any) {\n toUnenumerable(node.loc.start, \"index\");\n toUnenumerable(node.loc.end, \"index\");\n\n return node;\n}\n\nexport default (superClass: typeof Parser) =>\n class ESTreeParserMixin extends superClass implements Parser {\n parse(): ParseResult {\n const file = toESTreeLocation(super.parse());\n\n if (this.optionFlags & OptionFlags.Tokens) {\n file.tokens = file.tokens.map(toESTreeLocation);\n }\n\n return file;\n }\n\n // @ts-expect-error ESTree plugin changes node types\n parseRegExpLiteral({ pattern, flags }): N.EstreeRegExpLiteral {\n let regex: RegExp | null = null;\n try {\n regex = new RegExp(pattern, flags);\n } catch (_) {\n // In environments that don't support these flags value will\n // be null as the regex can't be represented natively.\n }\n const node = this.estreeParseLiteral(regex);\n node.regex = { pattern, flags };\n\n return node;\n }\n\n // @ts-expect-error ESTree plugin changes node types\n parseBigIntLiteral(value: any): N.Node {\n // https://github.com/estree/estree/blob/master/es2020.md#bigintliteral\n let bigInt: bigint | null;\n try {\n bigInt = BigInt(value);\n } catch {\n bigInt = null;\n }\n const node = this.estreeParseLiteral(bigInt);\n node.bigint = String(node.value || value);\n\n return node;\n }\n\n // @ts-expect-error ESTree plugin changes node types\n parseDecimalLiteral(value: any): N.Node {\n // https://github.com/estree/estree/blob/master/experimental/decimal.md\n // todo: use BigDecimal when node supports it.\n const decimal: null = null;\n const node = this.estreeParseLiteral(decimal);\n node.decimal = String(node.value || value);\n\n return node;\n }\n\n estreeParseLiteral(value: any) {\n // @ts-expect-error ESTree plugin changes node types\n return this.parseLiteral(value, \"Literal\");\n }\n\n // @ts-expect-error ESTree plugin changes node types\n parseStringLiteral(value: any): N.Node {\n return this.estreeParseLiteral(value);\n }\n\n parseNumericLiteral(value: any): any {\n return this.estreeParseLiteral(value);\n }\n\n // @ts-expect-error ESTree plugin changes node types\n parseNullLiteral(): N.Node {\n return this.estreeParseLiteral(null);\n }\n\n parseBooleanLiteral(value: boolean): N.BooleanLiteral {\n // @ts-expect-error ESTree plugin changes node types\n return this.estreeParseLiteral(value);\n }\n\n // https://github.com/estree/estree/blob/master/es2020.md#chainexpression\n estreeParseChainExpression(\n node: N.Expression,\n endLoc: Position,\n ): N.EstreeChainExpression {\n const chain = this.startNodeAtNode(node);\n chain.expression = node;\n return this.finishNodeAt(chain, \"ChainExpression\", endLoc);\n }\n\n // Cast a Directive to an ExpressionStatement. Mutates the input Directive.\n directiveToStmt(directive: N.Directive): N.ExpressionStatement {\n const expression = directive.value as any as N.EstreeLiteral;\n // @ts-expect-error delete non-optional properties\n delete directive.value;\n\n this.castNodeTo(expression, \"Literal\");\n expression.raw = expression.extra!.raw;\n expression.value = expression.extra!.expressionValue;\n\n const stmt = this.castNodeTo(directive, \"ExpressionStatement\");\n stmt.expression = expression;\n stmt.directive = expression.extra!.rawValue;\n\n delete expression.extra;\n\n return stmt;\n }\n\n /**\n * The TS-ESLint always define optional AST properties, here we provide the\n * default value for such properties immediately after `finishNode` was invoked.\n * This hook will be implemented by the typescript plugin.\n *\n * Note: This hook should be manually invoked when we change the `type` of a given AST\n * node, to ensure that the optional properties are correctly filled.\n * @param node The AST node finished by finishNode\n */\n // eslint-disable-next-line @typescript-eslint/no-unused-vars\n fillOptionalPropertiesForTSESLint(node: NodeType) {}\n\n cloneEstreeStringLiteral(node: N.EstreeLiteral): N.EstreeLiteral {\n const { start, end, loc, range, raw, value } = node;\n const cloned = Object.create(node.constructor.prototype);\n cloned.type = \"Literal\";\n cloned.start = start;\n cloned.end = end;\n cloned.loc = loc;\n cloned.range = range;\n cloned.raw = raw;\n cloned.value = value;\n return cloned;\n }\n\n // ==================================\n // Overrides\n // ==================================\n\n initFunction(node: N.BodilessFunctionOrMethodBase, isAsync: boolean): void {\n super.initFunction(node, isAsync);\n node.expression = false;\n }\n\n checkDeclaration(node: N.Pattern | N.ObjectProperty): void {\n if (node != null && this.isObjectProperty(node)) {\n // @ts-expect-error plugin typings\n this.checkDeclaration((node as unknown as N.EstreeProperty).value);\n } else {\n super.checkDeclaration(node);\n }\n }\n\n getObjectOrClassMethodParams(method: N.ObjectMethod | N.ClassMethod) {\n return (method as unknown as N.EstreeMethodDefinition).value.params;\n }\n\n isValidDirective(stmt: N.Statement): stmt is N.ExpressionStatement {\n return (\n stmt.type === \"ExpressionStatement\" &&\n stmt.expression.type === \"Literal\" &&\n typeof stmt.expression.value === \"string\" &&\n !stmt.expression.extra?.parenthesized\n );\n }\n\n parseBlockBody(\n node: N.BlockStatementLike,\n allowDirectives: boolean | undefined | null,\n topLevel: boolean,\n end: TokenType,\n afterBlockParse?: (hasStrictModeDirective: boolean) => void,\n ): void {\n super.parseBlockBody(\n node,\n allowDirectives,\n topLevel,\n end,\n afterBlockParse,\n );\n\n const directiveStatements = node.directives.map(d =>\n this.directiveToStmt(d),\n );\n // @ts-expect-error estree plugin typings\n node.body = directiveStatements.concat(node.body);\n // @ts-expect-error delete non-optional properties\n delete node.directives;\n }\n\n parsePrivateName(): any {\n const node = super.parsePrivateName();\n if (!process.env.BABEL_8_BREAKING) {\n if (!this.getPluginOption(\"estree\", \"classFeatures\")) {\n return node;\n }\n }\n return this.convertPrivateNameToPrivateIdentifier(node);\n }\n\n convertPrivateNameToPrivateIdentifier(\n node: N.PrivateName,\n ): N.EstreePrivateIdentifier {\n const name = super.getPrivateNameSV(node);\n // @ts-expect-error delete non-optional properties\n delete node.id;\n // @ts-expect-error mutate AST types\n node.name = name;\n return this.castNodeTo(node, \"PrivateIdentifier\");\n }\n\n // @ts-expect-error ESTree plugin changes node types\n isPrivateName(node: N.Node): node is N.EstreePrivateIdentifier {\n if (!process.env.BABEL_8_BREAKING) {\n if (!this.getPluginOption(\"estree\", \"classFeatures\")) {\n return super.isPrivateName(node);\n }\n }\n return node.type === \"PrivateIdentifier\";\n }\n\n // @ts-expect-error ESTree plugin changes node types\n getPrivateNameSV(node: N.EstreePrivateIdentifier): string {\n if (!process.env.BABEL_8_BREAKING) {\n if (!this.getPluginOption(\"estree\", \"classFeatures\")) {\n return super.getPrivateNameSV(node as unknown as N.PrivateName);\n }\n }\n return node.name;\n }\n\n // @ts-expect-error plugin may override interfaces\n parseLiteral(value: any, type: T[\"type\"]): T {\n const node = super.parseLiteral(value, type);\n // @ts-expect-error mutating AST types\n node.raw = node.extra.raw;\n delete node.extra;\n\n return node;\n }\n\n parseFunctionBody(\n node: N.Function,\n allowExpression?: boolean | null,\n isMethod: boolean = false,\n ): void {\n super.parseFunctionBody(node, allowExpression, isMethod);\n node.expression = node.body.type !== \"BlockStatement\";\n }\n\n // @ts-expect-error plugin may override interfaces\n parseMethod<\n T extends N.ClassPrivateMethod | N.ObjectMethod | N.ClassMethod,\n >(\n node: Undone,\n isGenerator: boolean,\n isAsync: boolean,\n isConstructor: boolean,\n allowDirectSuper: boolean,\n type: T[\"type\"],\n inClassScope: boolean = false,\n ):\n | N.EstreeProperty\n | N.EstreeMethodDefinition\n | N.EstreeTSAbstractMethodDefinition {\n let funcNode = this.startNode();\n funcNode.kind = node.kind; // provide kind, so super method correctly sets state\n funcNode = super.parseMethod(\n funcNode,\n isGenerator,\n isAsync,\n isConstructor,\n allowDirectSuper,\n type,\n inClassScope,\n );\n // @ts-expect-error delete non-optional properties\n delete funcNode.kind;\n const { typeParameters } = node;\n if (typeParameters) {\n delete node.typeParameters;\n funcNode.typeParameters = typeParameters;\n this.resetStartLocationFromNode(funcNode, typeParameters);\n }\n const valueNode = this.castNodeTo(\n funcNode as N.MethodLike,\n process.env.BABEL_8_BREAKING &&\n this.hasPlugin(\"typescript\") &&\n !funcNode.body\n ? \"TSEmptyBodyFunctionExpression\"\n : \"FunctionExpression\",\n );\n (\n node as unknown as Undone<\n | N.EstreeProperty\n | N.EstreeMethodDefinition\n | N.EstreeTSAbstractMethodDefinition\n >\n ).value = valueNode;\n if (type === \"ClassPrivateMethod\") {\n node.computed = false;\n }\n if (process.env.BABEL_8_BREAKING && this.hasPlugin(\"typescript\")) {\n // @ts-expect-error todo(flow->ts) property not defined for all types in union\n if (node.abstract) {\n // @ts-expect-error remove abstract from TSAbstractMethodDefinition\n delete node.abstract;\n return this.finishNode(\n // @ts-expect-error cast methods to estree types\n node as Undone,\n \"TSAbstractMethodDefinition\",\n );\n }\n }\n if (type === \"ObjectMethod\") {\n if ((node as any as N.ObjectMethod).kind === \"method\") {\n (node as any as N.EstreeProperty).kind = \"init\";\n }\n (node as any as N.EstreeProperty).shorthand = false;\n return this.finishNode(\n // @ts-expect-error cast methods to estree types\n node as Undone,\n \"Property\",\n );\n } else {\n return this.finishNode(\n // @ts-expect-error cast methods to estree types\n node as Undone,\n \"MethodDefinition\",\n );\n }\n }\n\n nameIsConstructor(key: N.Expression | N.PrivateName): boolean {\n if (key.type === \"Literal\") return key.value === \"constructor\";\n return super.nameIsConstructor(key);\n }\n\n parseClassProperty(...args: [N.ClassProperty]): any {\n const propertyNode = super.parseClassProperty(...args);\n if (!process.env.BABEL_8_BREAKING) {\n if (!this.getPluginOption(\"estree\", \"classFeatures\")) {\n return propertyNode as unknown as N.EstreePropertyDefinition;\n }\n }\n if (\n process.env.BABEL_8_BREAKING &&\n propertyNode.abstract &&\n this.hasPlugin(\"typescript\")\n ) {\n delete propertyNode.abstract;\n this.castNodeTo(propertyNode, \"TSAbstractPropertyDefinition\");\n } else {\n this.castNodeTo(propertyNode, \"PropertyDefinition\");\n }\n return propertyNode;\n }\n\n parseClassPrivateProperty(...args: [N.ClassPrivateProperty]): any {\n const propertyNode = super.parseClassPrivateProperty(...args);\n if (!process.env.BABEL_8_BREAKING) {\n if (!this.getPluginOption(\"estree\", \"classFeatures\")) {\n return propertyNode as unknown as N.EstreePropertyDefinition;\n }\n }\n if (\n process.env.BABEL_8_BREAKING &&\n propertyNode.abstract &&\n this.hasPlugin(\"typescript\")\n ) {\n this.castNodeTo(propertyNode, \"TSAbstractPropertyDefinition\");\n } else {\n this.castNodeTo(propertyNode, \"PropertyDefinition\");\n }\n propertyNode.computed = false;\n return propertyNode;\n }\n\n parseClassAccessorProperty(\n this: Parser,\n node: N.ClassAccessorProperty,\n ): any {\n const accessorPropertyNode = super.parseClassAccessorProperty(node);\n if (!process.env.BABEL_8_BREAKING) {\n if (!this.getPluginOption(\"estree\", \"classFeatures\")) {\n return accessorPropertyNode;\n }\n }\n if (accessorPropertyNode.abstract && this.hasPlugin(\"typescript\")) {\n delete accessorPropertyNode.abstract;\n this.castNodeTo(accessorPropertyNode, \"TSAbstractAccessorProperty\");\n } else {\n this.castNodeTo(accessorPropertyNode, \"AccessorProperty\");\n }\n return accessorPropertyNode;\n }\n\n parseObjectProperty(\n prop: N.ObjectProperty,\n startLoc: Position | undefined | null,\n isPattern: boolean,\n refExpressionErrors?: ExpressionErrors | null,\n ): N.ObjectProperty | undefined | null {\n const node: N.EstreeProperty = super.parseObjectProperty(\n prop,\n startLoc,\n isPattern,\n refExpressionErrors,\n ) as any;\n\n if (node) {\n node.kind = \"init\";\n this.castNodeTo(node, \"Property\");\n }\n\n return node as any;\n }\n\n finishObjectProperty(node: Undone): N.ObjectProperty {\n (node as unknown as Undone).kind = \"init\";\n return this.finishNode(\n node as unknown as Undone,\n \"Property\",\n ) as any;\n }\n\n isValidLVal(\n type: string,\n disallowCallExpression: boolean,\n isUnparenthesizedInAssign: boolean,\n binding: BindingFlag,\n ) {\n return type === \"Property\"\n ? \"value\"\n : super.isValidLVal(\n type,\n disallowCallExpression,\n isUnparenthesizedInAssign,\n binding,\n );\n }\n\n isAssignable(node: N.Node, isBinding?: boolean): boolean {\n if (node != null && this.isObjectProperty(node)) {\n return this.isAssignable(node.value, isBinding);\n }\n return super.isAssignable(node, isBinding);\n }\n\n toAssignable(node: N.Node, isLHS: boolean = false): void {\n if (node != null && this.isObjectProperty(node)) {\n const { key, value } = node;\n if (this.isPrivateName(key)) {\n this.classScope.usePrivateName(\n this.getPrivateNameSV(key),\n key.loc.start,\n );\n }\n this.toAssignable(value, isLHS);\n } else {\n super.toAssignable(node, isLHS);\n }\n }\n\n toAssignableObjectExpressionProp(\n prop: N.Node,\n isLast: boolean,\n isLHS: boolean,\n ) {\n if (\n prop.type === \"Property\" &&\n (prop.kind === \"get\" || prop.kind === \"set\")\n ) {\n this.raise(Errors.PatternHasAccessor, prop.key);\n } else if (prop.type === \"Property\" && prop.method) {\n this.raise(Errors.PatternHasMethod, prop.key);\n } else {\n super.toAssignableObjectExpressionProp(prop, isLast, isLHS);\n }\n }\n\n finishCallExpression(\n unfinished: Undone,\n optional: boolean,\n ): T {\n const node = super.finishCallExpression(unfinished, optional);\n\n if (node.callee.type === \"Import\") {\n this.castNodeTo(node, \"ImportExpression\");\n (node as N.Node as N.EstreeImportExpression).source = node\n .arguments[0] as N.Expression;\n (node as N.Node as N.EstreeImportExpression).options =\n (node.arguments[1] as N.Expression) ?? null;\n if (!process.env.BABEL_8_BREAKING) {\n // compatibility with previous ESTree AST\n (node as N.Node as N.EstreeImportExpression).attributes =\n (node.arguments[1] as N.Expression) ?? null;\n }\n // arguments isn't optional in the type definition\n // @ts-expect-error delete non-optional properties\n delete node.arguments;\n // callee isn't optional in the type definition\n // @ts-expect-error delete non-optional properties\n delete node.callee;\n } else if (node.type === \"OptionalCallExpression\") {\n this.castNodeTo(node, \"CallExpression\");\n } else {\n node.optional = false;\n }\n\n return node;\n }\n\n toReferencedArguments(\n node:\n | N.CallExpression\n | N.OptionalCallExpression\n | N.EstreeImportExpression,\n /* isParenthesizedExpr?: boolean, */\n ) {\n // ImportExpressions do not have an arguments array.\n if (node.type === \"ImportExpression\") {\n return;\n }\n\n super.toReferencedArguments(node);\n }\n\n parseExport(\n unfinished: Undone,\n decorators: N.Decorator[] | null,\n ) {\n const exportStartLoc = this.state.lastTokStartLoc!;\n const node = super.parseExport(unfinished, decorators);\n\n switch (node.type) {\n case \"ExportAllDeclaration\":\n // @ts-expect-error mutating AST types\n node.exported = null;\n break;\n\n case \"ExportNamedDeclaration\":\n if (\n node.specifiers.length === 1 &&\n node.specifiers[0].type === \"ExportNamespaceSpecifier\"\n ) {\n this.castNodeTo(node, \"ExportAllDeclaration\");\n // @ts-expect-error mutating AST types\n node.exported = node.specifiers[0].exported;\n // @ts-expect-error The ESTree AST shape differs from the Babel AST\n delete node.specifiers;\n }\n\n // fallthrough\n case \"ExportDefaultDeclaration\":\n {\n const { declaration } = node;\n if (\n declaration?.type === \"ClassDeclaration\" &&\n // @ts-expect-error comparing undefined and number\n declaration.decorators?.length > 0 &&\n // decorator comes before export\n declaration.start === node.start\n ) {\n this.resetStartLocation(\n node,\n // For compatibility with ESLint's keyword-spacing rule, which assumes that an\n // export declaration must start with export.\n // https://github.com/babel/babel/issues/15085\n // Here we reset export declaration's start to be the start of the export token\n exportStartLoc,\n );\n }\n }\n\n break;\n }\n\n return node;\n }\n\n stopParseSubscript(base: N.Expression, state: N.ParseSubscriptState) {\n const node = super.stopParseSubscript(base, state);\n if (state.optionalChainMember) {\n return this.estreeParseChainExpression(node, base.loc.end);\n }\n return node;\n }\n\n parseMember(\n base: N.Expression,\n startLoc: Position,\n state: N.ParseSubscriptState,\n computed: boolean,\n optional: boolean,\n ) {\n const node = super.parseMember(base, startLoc, state, computed, optional);\n if (node.type === \"OptionalMemberExpression\") {\n this.castNodeTo(node, \"MemberExpression\");\n } else {\n node.optional = false;\n }\n return node;\n }\n\n isOptionalMemberExpression(node: N.Node) {\n if (node.type === \"ChainExpression\") {\n return node.expression.type === \"MemberExpression\";\n }\n return super.isOptionalMemberExpression(node);\n }\n\n hasPropertyAsPrivateName(node: N.Node): boolean {\n if (node.type === \"ChainExpression\") {\n node = node.expression;\n }\n return super.hasPropertyAsPrivateName(node);\n }\n\n // @ts-expect-error ESTree plugin changes node types\n isObjectProperty(node: N.Node): node is N.EstreeProperty {\n return node.type === \"Property\" && node.kind === \"init\" && !node.method;\n }\n\n // @ts-expect-error ESTree plugin changes node types\n isObjectMethod(node: N.Node): node is N.EstreeProperty {\n return (\n node.type === \"Property\" &&\n (node.method || node.kind === \"get\" || node.kind === \"set\")\n );\n }\n\n /* ============================================================ *\n * parser/node.ts *\n * ============================================================ */\n\n castNodeTo(\n node: N.Node,\n type: T,\n ): Extract {\n const result = super.castNodeTo(node, type);\n this.fillOptionalPropertiesForTSESLint(result);\n return result;\n }\n\n cloneIdentifier(node: T): T {\n const cloned = super.cloneIdentifier(node);\n this.fillOptionalPropertiesForTSESLint(cloned);\n return cloned;\n }\n\n cloneStringLiteral<\n T extends N.EstreeLiteral | N.StringLiteral | N.Placeholder,\n >(node: T): T {\n if (node.type === \"Literal\") {\n return this.cloneEstreeStringLiteral(node) as T;\n }\n return super.cloneStringLiteral(node);\n }\n\n finishNodeAt(\n node: Undone,\n type: T[\"type\"],\n endLoc: Position,\n ): T {\n return toESTreeLocation(super.finishNodeAt(node, type, endLoc));\n }\n\n // Override for TS-ESLint that does not allow optional AST properties\n finishNode(node: Undone, type: T[\"type\"]): T {\n const result = super.finishNode(node, type);\n this.fillOptionalPropertiesForTSESLint(result);\n return result;\n }\n\n resetStartLocation(node: N.Node, startLoc: Position) {\n super.resetStartLocation(node, startLoc);\n toESTreeLocation(node);\n }\n\n resetEndLocation(\n node: NodeBase,\n endLoc: Position = this.state.lastTokEndLoc!,\n ): void {\n super.resetEndLocation(node, endLoc);\n toESTreeLocation(node);\n }\n };\n","// The token context is used in JSX plugin to track\n// jsx tag / jsx text / normal JavaScript expression\n\nexport class TokContext {\n constructor(token: string, preserveSpace?: boolean) {\n this.token = token;\n this.preserveSpace = !!preserveSpace;\n }\n\n token: string;\n preserveSpace: boolean;\n}\n\nconst types: Record = {\n brace: new TokContext(\"{\"), // normal JavaScript expression\n j_oTag: new TokContext(\"...\", true), // JSX expressions\n};\n\nif (!process.env.BABEL_8_BREAKING) {\n types.template = new TokContext(\"`\", true);\n}\n\nexport { types };\n","import { types as tc, type TokContext } from \"./context.ts\";\n// ## Token types\n\n// The assignment of fine-grained, information-carrying type objects\n// allows the tokenizer to store the information it has about a\n// token in a way that is very cheap for the parser to look up.\n\n// All token type variables start with an underscore, to make them\n// easy to recognize.\n\n// The `beforeExpr` property is used to disambiguate between 1) binary\n// expression (<) and JSX Tag start (); 2) object literal and JSX\n// texts. It is set on the `updateContext` function in the JSX plugin.\n\n// The `startsExpr` property is used to determine whether an expression\n// may be the “argument” subexpression of a `yield` expression or\n// `yield` statement. It is set on all token types that may be at the\n// start of a subexpression.\n\n// `isLoop` marks a keyword as starting a loop, which is important\n// to know when parsing a label, in order to allow or disallow\n// continue jumps to that label.\n\nconst beforeExpr = true;\nconst startsExpr = true;\nconst isLoop = true;\nconst isAssign = true;\nconst prefix = true;\nconst postfix = true;\n\ntype TokenOptions = {\n keyword?: string;\n beforeExpr?: boolean;\n startsExpr?: boolean;\n rightAssociative?: boolean;\n isLoop?: boolean;\n isAssign?: boolean;\n prefix?: boolean;\n postfix?: boolean;\n binop?: number | null;\n};\n\n// Internally the tokenizer stores token as a number\nexport type TokenType = number;\n\n// The `ExportedTokenType` is exported via `tokTypes` and accessible\n// when `tokens: true` is enabled. Unlike internal token type, it provides\n// metadata of the tokens.\nexport class ExportedTokenType {\n label: string;\n keyword: string | undefined | null;\n beforeExpr: boolean;\n startsExpr: boolean;\n rightAssociative: boolean;\n isLoop: boolean;\n isAssign: boolean;\n prefix: boolean;\n postfix: boolean;\n binop: number | undefined | null;\n // todo(Babel 8): remove updateContext from exposed token layout\n declare updateContext: ((context: TokContext[]) => void) | undefined | null;\n\n constructor(label: string, conf: TokenOptions = {}) {\n this.label = label;\n this.keyword = conf.keyword;\n this.beforeExpr = !!conf.beforeExpr;\n this.startsExpr = !!conf.startsExpr;\n this.rightAssociative = !!conf.rightAssociative;\n this.isLoop = !!conf.isLoop;\n this.isAssign = !!conf.isAssign;\n this.prefix = !!conf.prefix;\n this.postfix = !!conf.postfix;\n this.binop = conf.binop != null ? conf.binop : null;\n if (!process.env.BABEL_8_BREAKING) {\n this.updateContext = null;\n }\n }\n}\n\n// A map from keyword/keyword-like string value to the token type\nexport const keywords = new Map();\n\nfunction createKeyword(name: string, options: TokenOptions = {}): TokenType {\n options.keyword = name;\n const token = createToken(name, options);\n keywords.set(name, token);\n return token;\n}\n\nfunction createBinop(name: string, binop: number) {\n return createToken(name, { beforeExpr, binop });\n}\n\nlet tokenTypeCounter = -1;\nexport const tokenTypes: ExportedTokenType[] = [];\nconst tokenLabels: string[] = [];\nconst tokenBinops: number[] = [];\nconst tokenBeforeExprs: boolean[] = [];\nconst tokenStartsExprs: boolean[] = [];\nconst tokenPrefixes: boolean[] = [];\n\nfunction createToken(name: string, options: TokenOptions = {}): TokenType {\n ++tokenTypeCounter;\n tokenLabels.push(name);\n tokenBinops.push(options.binop ?? -1);\n tokenBeforeExprs.push(options.beforeExpr ?? false);\n tokenStartsExprs.push(options.startsExpr ?? false);\n tokenPrefixes.push(options.prefix ?? false);\n tokenTypes.push(new ExportedTokenType(name, options));\n\n return tokenTypeCounter;\n}\n\nfunction createKeywordLike(\n name: string,\n options: TokenOptions = {},\n): TokenType {\n ++tokenTypeCounter;\n keywords.set(name, tokenTypeCounter);\n tokenLabels.push(name);\n tokenBinops.push(options.binop ?? -1);\n tokenBeforeExprs.push(options.beforeExpr ?? false);\n tokenStartsExprs.push(options.startsExpr ?? false);\n tokenPrefixes.push(options.prefix ?? false);\n // In the exported token type, we set the label as \"name\" for backward compatibility with Babel 7\n tokenTypes.push(new ExportedTokenType(\"name\", options));\n\n return tokenTypeCounter;\n}\n\n// For performance the token type helpers depend on the following declarations order.\n// When adding new token types, please also check if the token helpers need update.\n\nexport type InternalTokenTypes = typeof tt;\n\nexport const tt = {\n // Punctuation token types.\n bracketL: createToken(\"[\", { beforeExpr, startsExpr }),\n // TODO: Remove this in Babel 8\n bracketHashL: createToken(\"#[\", { beforeExpr, startsExpr }),\n // TODO: Remove this in Babel 8\n bracketBarL: createToken(\"[|\", { beforeExpr, startsExpr }),\n bracketR: createToken(\"]\"),\n // TODO: Remove this in Babel 8\n bracketBarR: createToken(\"|]\"),\n braceL: createToken(\"{\", { beforeExpr, startsExpr }),\n // TODO: Remove this in Babel 8\n braceBarL: createToken(\"{|\", { beforeExpr, startsExpr }),\n // TODO: Remove this in Babel 8\n braceHashL: createToken(\"#{\", { beforeExpr, startsExpr }),\n braceR: createToken(\"}\"),\n braceBarR: createToken(\"|}\"),\n parenL: createToken(\"(\", { beforeExpr, startsExpr }),\n parenR: createToken(\")\"),\n comma: createToken(\",\", { beforeExpr }),\n semi: createToken(\";\", { beforeExpr }),\n colon: createToken(\":\", { beforeExpr }),\n doubleColon: createToken(\"::\", { beforeExpr }),\n dot: createToken(\".\"),\n question: createToken(\"?\", { beforeExpr }),\n questionDot: createToken(\"?.\"),\n arrow: createToken(\"=>\", { beforeExpr }),\n template: createToken(\"template\"),\n ellipsis: createToken(\"...\", { beforeExpr }),\n backQuote: createToken(\"`\", { startsExpr }),\n dollarBraceL: createToken(\"${\", { beforeExpr, startsExpr }),\n // start: isTemplate\n templateTail: createToken(\"...`\", { startsExpr }),\n templateNonTail: createToken(\"...${\", { beforeExpr, startsExpr }),\n // end: isTemplate\n at: createToken(\"@\"),\n hash: createToken(\"#\", { startsExpr }),\n\n // Special hashbang token.\n interpreterDirective: createToken(\"#!...\"),\n\n // Operators. These carry several kinds of properties to help the\n // parser use them properly (the presence of these properties is\n // what categorizes them as operators).\n //\n // `binop`, when present, specifies that this operator is a binary\n // operator, and will refer to its precedence.\n //\n // `prefix` and `postfix` mark the operator as a prefix or postfix\n // unary operator.\n //\n // `isAssign` marks all of `=`, `+=`, `-=` etcetera, which act as\n // binary operators with a very low precedence, that should result\n // in AssignmentExpression nodes.\n\n // start: isAssign\n eq: createToken(\"=\", { beforeExpr, isAssign }),\n assign: createToken(\"_=\", { beforeExpr, isAssign }),\n slashAssign: createToken(\"_=\", { beforeExpr, isAssign }),\n // These are only needed to support % and ^ as a Hack-pipe topic token.\n // When the proposal settles on a token, the others can be merged with\n // tt.assign.\n xorAssign: createToken(\"_=\", { beforeExpr, isAssign }),\n moduloAssign: createToken(\"_=\", { beforeExpr, isAssign }),\n // end: isAssign\n\n incDec: createToken(\"++/--\", { prefix, postfix, startsExpr }),\n bang: createToken(\"!\", { beforeExpr, prefix, startsExpr }),\n tilde: createToken(\"~\", { beforeExpr, prefix, startsExpr }),\n\n // More possible topic tokens.\n // When the proposal settles on a token, at least one of these may be removed.\n doubleCaret: createToken(\"^^\", { startsExpr }),\n doubleAt: createToken(\"@@\", { startsExpr }),\n\n // start: isBinop\n pipeline: createBinop(\"|>\", 0),\n nullishCoalescing: createBinop(\"??\", 1),\n logicalOR: createBinop(\"||\", 1),\n logicalAND: createBinop(\"&&\", 2),\n bitwiseOR: createBinop(\"|\", 3),\n bitwiseXOR: createBinop(\"^\", 4),\n bitwiseAND: createBinop(\"&\", 5),\n equality: createBinop(\"==/!=/===/!==\", 6),\n lt: createBinop(\"/<=/>=\", 7),\n gt: createBinop(\"/<=/>=\", 7),\n relational: createBinop(\"/<=/>=\", 7),\n bitShift: createBinop(\"<>/>>>\", 8),\n bitShiftL: createBinop(\"<>/>>>\", 8),\n bitShiftR: createBinop(\"<>/>>>\", 8),\n plusMin: createToken(\"+/-\", { beforeExpr, binop: 9, prefix, startsExpr }),\n // startsExpr: required by v8intrinsic plugin\n modulo: createToken(\"%\", { binop: 10, startsExpr }),\n // unset `beforeExpr` as it can be `function *`\n star: createToken(\"*\", { binop: 10 }),\n slash: createBinop(\"/\", 10),\n exponent: createToken(\"**\", {\n beforeExpr,\n binop: 11,\n rightAssociative: true,\n }),\n\n // Keywords\n // Don't forget to update packages/babel-helper-validator-identifier/src/keyword.js\n // when new keywords are added\n // start: isLiteralPropertyName\n // start: isKeyword\n _in: createKeyword(\"in\", { beforeExpr, binop: 7 }),\n _instanceof: createKeyword(\"instanceof\", { beforeExpr, binop: 7 }),\n // end: isBinop\n _break: createKeyword(\"break\"),\n _case: createKeyword(\"case\", { beforeExpr }),\n _catch: createKeyword(\"catch\"),\n _continue: createKeyword(\"continue\"),\n _debugger: createKeyword(\"debugger\"),\n _default: createKeyword(\"default\", { beforeExpr }),\n _else: createKeyword(\"else\", { beforeExpr }),\n _finally: createKeyword(\"finally\"),\n _function: createKeyword(\"function\", { startsExpr }),\n _if: createKeyword(\"if\"),\n _return: createKeyword(\"return\", { beforeExpr }),\n _switch: createKeyword(\"switch\"),\n _throw: createKeyword(\"throw\", { beforeExpr, prefix, startsExpr }),\n _try: createKeyword(\"try\"),\n _var: createKeyword(\"var\"),\n _const: createKeyword(\"const\"),\n _with: createKeyword(\"with\"),\n _new: createKeyword(\"new\", { beforeExpr, startsExpr }),\n _this: createKeyword(\"this\", { startsExpr }),\n _super: createKeyword(\"super\", { startsExpr }),\n _class: createKeyword(\"class\", { startsExpr }),\n _extends: createKeyword(\"extends\", { beforeExpr }),\n _export: createKeyword(\"export\"),\n _import: createKeyword(\"import\", { startsExpr }),\n _null: createKeyword(\"null\", { startsExpr }),\n _true: createKeyword(\"true\", { startsExpr }),\n _false: createKeyword(\"false\", { startsExpr }),\n _typeof: createKeyword(\"typeof\", { beforeExpr, prefix, startsExpr }),\n _void: createKeyword(\"void\", { beforeExpr, prefix, startsExpr }),\n _delete: createKeyword(\"delete\", { beforeExpr, prefix, startsExpr }),\n // start: isLoop\n _do: createKeyword(\"do\", { isLoop, beforeExpr }),\n _for: createKeyword(\"for\", { isLoop }),\n _while: createKeyword(\"while\", { isLoop }),\n // end: isLoop\n // end: isKeyword\n\n // Primary literals\n // start: isIdentifier\n _as: createKeywordLike(\"as\", { startsExpr }),\n _assert: createKeywordLike(\"assert\", { startsExpr }),\n _async: createKeywordLike(\"async\", { startsExpr }),\n _await: createKeywordLike(\"await\", { startsExpr }),\n _defer: createKeywordLike(\"defer\", { startsExpr }),\n _from: createKeywordLike(\"from\", { startsExpr }),\n _get: createKeywordLike(\"get\", { startsExpr }),\n _let: createKeywordLike(\"let\", { startsExpr }),\n _meta: createKeywordLike(\"meta\", { startsExpr }),\n _of: createKeywordLike(\"of\", { startsExpr }),\n _sent: createKeywordLike(\"sent\", { startsExpr }),\n _set: createKeywordLike(\"set\", { startsExpr }),\n _source: createKeywordLike(\"source\", { startsExpr }),\n _static: createKeywordLike(\"static\", { startsExpr }),\n _using: createKeywordLike(\"using\", { startsExpr }),\n _yield: createKeywordLike(\"yield\", { startsExpr }),\n\n // Flow and TypeScript Keywordlike\n _asserts: createKeywordLike(\"asserts\", { startsExpr }),\n _checks: createKeywordLike(\"checks\", { startsExpr }),\n _exports: createKeywordLike(\"exports\", { startsExpr }),\n _global: createKeywordLike(\"global\", { startsExpr }),\n _implements: createKeywordLike(\"implements\", { startsExpr }),\n _intrinsic: createKeywordLike(\"intrinsic\", { startsExpr }),\n _infer: createKeywordLike(\"infer\", { startsExpr }),\n _is: createKeywordLike(\"is\", { startsExpr }),\n _mixins: createKeywordLike(\"mixins\", { startsExpr }),\n _proto: createKeywordLike(\"proto\", { startsExpr }),\n _require: createKeywordLike(\"require\", { startsExpr }),\n _satisfies: createKeywordLike(\"satisfies\", { startsExpr }),\n // start: isTSTypeOperator\n _keyof: createKeywordLike(\"keyof\", { startsExpr }),\n _readonly: createKeywordLike(\"readonly\", { startsExpr }),\n _unique: createKeywordLike(\"unique\", { startsExpr }),\n // end: isTSTypeOperator\n // start: isTSDeclarationStart\n _abstract: createKeywordLike(\"abstract\", { startsExpr }),\n _declare: createKeywordLike(\"declare\", { startsExpr }),\n _enum: createKeywordLike(\"enum\", { startsExpr }),\n _module: createKeywordLike(\"module\", { startsExpr }),\n _namespace: createKeywordLike(\"namespace\", { startsExpr }),\n // start: isFlowInterfaceOrTypeOrOpaque\n _interface: createKeywordLike(\"interface\", { startsExpr }),\n _type: createKeywordLike(\"type\", { startsExpr }),\n // end: isTSDeclarationStart\n _opaque: createKeywordLike(\"opaque\", { startsExpr }),\n // end: isFlowInterfaceOrTypeOrOpaque\n name: createToken(\"name\", { startsExpr }),\n\n // placeholder plugin\n placeholder: createToken(\"%%\", { startsExpr }),\n // end: isIdentifier\n\n string: createToken(\"string\", { startsExpr }),\n num: createToken(\"num\", { startsExpr }),\n bigint: createToken(\"bigint\", { startsExpr }),\n // TODO: Remove this in Babel 8\n decimal: createToken(\"decimal\", { startsExpr }),\n // end: isLiteralPropertyName\n regexp: createToken(\"regexp\", { startsExpr }),\n privateName: createToken(\"#name\", { startsExpr }),\n eof: createToken(\"eof\"),\n\n // jsx plugin\n jsxName: createToken(\"jsxName\"),\n jsxText: createToken(\"jsxText\", { beforeExpr }),\n jsxTagStart: createToken(\"jsxTagStart\", { startsExpr }),\n jsxTagEnd: createToken(\"jsxTagEnd\"),\n} as const;\n\nexport function tokenIsIdentifier(token: TokenType): boolean {\n return token >= tt._as && token <= tt.placeholder;\n}\n\nexport function tokenKeywordOrIdentifierIsKeyword(token: TokenType): boolean {\n // we can remove the token >= tt._in check when we\n // know a token is either keyword or identifier\n return token <= tt._while;\n}\n\nexport function tokenIsKeywordOrIdentifier(token: TokenType): boolean {\n return token >= tt._in && token <= tt.placeholder;\n}\n\nexport function tokenIsLiteralPropertyName(token: TokenType): boolean {\n return token >= tt._in && token <= tt.decimal;\n}\n\nexport function tokenComesBeforeExpression(token: TokenType): boolean {\n return tokenBeforeExprs[token];\n}\n\nexport function tokenCanStartExpression(token: TokenType): boolean {\n return tokenStartsExprs[token];\n}\n\nexport function tokenIsAssignment(token: TokenType): boolean {\n return token >= tt.eq && token <= tt.moduloAssign;\n}\n\nexport function tokenIsFlowInterfaceOrTypeOrOpaque(token: TokenType): boolean {\n return token >= tt._interface && token <= tt._opaque;\n}\n\nexport function tokenIsLoop(token: TokenType): boolean {\n return token >= tt._do && token <= tt._while;\n}\n\nexport function tokenIsKeyword(token: TokenType): boolean {\n return token >= tt._in && token <= tt._while;\n}\n\nexport function tokenIsOperator(token: TokenType): boolean {\n return token >= tt.pipeline && token <= tt._instanceof;\n}\n\nexport function tokenIsPostfix(token: TokenType): boolean {\n return token === tt.incDec;\n}\n\nexport function tokenIsPrefix(token: TokenType): boolean {\n return tokenPrefixes[token];\n}\n\nexport function tokenIsTSTypeOperator(token: TokenType): boolean {\n return token >= tt._keyof && token <= tt._unique;\n}\n\nexport function tokenIsTSDeclarationStart(token: TokenType): boolean {\n return token >= tt._abstract && token <= tt._type;\n}\n\nexport function tokenLabelName(token: TokenType): string {\n return tokenLabels[token];\n}\n\nexport function tokenOperatorPrecedence(token: TokenType): number {\n return tokenBinops[token];\n}\n\nexport function tokenIsBinaryOperator(token: TokenType): boolean {\n return tokenBinops[token] !== -1;\n}\n\nexport function tokenIsRightAssociative(token: TokenType): boolean {\n return token === tt.exponent;\n}\n\nexport function tokenIsTemplate(token: TokenType): boolean {\n return token >= tt.templateTail && token <= tt.templateNonTail;\n}\n\nexport function getExportedToken(token: TokenType): ExportedTokenType {\n return tokenTypes[token];\n}\n\nexport function isTokenType(obj: any): boolean {\n return typeof obj === \"number\";\n}\n\nif (!process.env.BABEL_8_BREAKING) {\n tokenTypes[tt.braceR].updateContext = context => {\n context.pop();\n };\n\n tokenTypes[tt.braceL].updateContext =\n tokenTypes[tt.braceHashL].updateContext =\n tokenTypes[tt.dollarBraceL].updateContext =\n context => {\n context.push(tc.brace);\n };\n\n tokenTypes[tt.backQuote].updateContext = context => {\n if (context[context.length - 1] === tc.template) {\n context.pop();\n } else {\n context.push(tc.template);\n }\n };\n\n tokenTypes[tt.jsxTagStart].updateContext = context => {\n context.push(tc.j_expr, tc.j_oTag);\n };\n}\n","// We inline this package\n// eslint-disable-next-line import/no-extraneous-dependencies\nimport * as charCodes from \"charcodes\";\n\n// ## Character categories\n\n// Big ugly regular expressions that match characters in the\n// whitespace, identifier, and identifier-start categories. These\n// are only applied when a character is found to actually have a\n// code point between 0x80 and 0xffff.\n// Generated by `scripts/generate-identifier-regex.cjs`.\n\n/* prettier-ignore */\nlet 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-\\u088f\\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\\u0c5c\\u0c5d\\u0c60\\u0c61\\u0c80\\u0c85-\\u0c8c\\u0c8e-\\u0c90\\u0c92-\\u0ca8\\u0caa-\\u0cb3\\u0cb5-\\u0cb9\\u0cbd\\u0cdc-\\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-\\u1c8a\\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-\\ua7dc\\ua7f1-\\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\";\n/* prettier-ignore */\nlet nonASCIIidentifierChars = \"\\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\\u0897-\\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\\u0cf3\\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-\\u0ece\\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-\\u1add\\u1ae0-\\u1aeb\\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\\u200c\\u200d\\u203f\\u2040\\u2054\\u20d0-\\u20dc\\u20e1\\u20e5-\\u20f0\\u2cef-\\u2cf1\\u2d7f\\u2de0-\\u2dff\\u302a-\\u302f\\u3099\\u309a\\u30fb\\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\\uff65\";\n\nconst nonASCIIidentifierStart = new RegExp(\n \"[\" + nonASCIIidentifierStartChars + \"]\",\n);\nconst nonASCIIidentifier = new RegExp(\n \"[\" + nonASCIIidentifierStartChars + nonASCIIidentifierChars + \"]\",\n);\n\nnonASCIIidentifierStartChars = nonASCIIidentifierChars = null;\n\n// These are a run-length and offset-encoded representation of the\n// >0xffff code points that are a valid part of identifiers. The\n// offset starts at 0x10000, and each pair of numbers represents an\n// offset to the next range, and then a size of the range. They were\n// generated by `scripts/generate-identifier-regex.cjs`.\n/* prettier-ignore */\nconst astralIdentifierStartCodes = [0,11,2,25,2,18,2,1,2,14,3,13,35,122,70,52,268,28,4,48,48,31,14,29,6,37,11,29,3,35,5,7,2,4,43,157,19,35,5,35,5,39,9,51,13,10,2,14,2,6,2,1,2,10,2,14,2,6,2,1,4,51,13,310,10,21,11,7,25,5,2,41,2,8,70,5,3,0,2,43,2,1,4,0,3,22,11,22,10,30,66,18,2,1,11,21,11,25,7,25,39,55,7,1,65,0,16,3,2,2,2,28,43,28,4,28,36,7,2,27,28,53,11,21,11,18,14,17,111,72,56,50,14,50,14,35,39,27,10,22,251,41,7,1,17,5,57,28,11,0,9,21,43,17,47,20,28,22,13,52,58,1,3,0,14,44,33,24,27,35,30,0,3,0,9,34,4,0,13,47,15,3,22,0,2,0,36,17,2,24,20,1,64,6,2,0,2,3,2,14,2,9,8,46,39,7,3,1,3,21,2,6,2,1,2,4,4,0,19,0,13,4,31,9,2,0,3,0,2,37,2,0,26,0,2,0,45,52,19,3,21,2,31,47,21,1,2,0,185,46,42,3,37,47,21,0,60,42,14,0,72,26,38,6,186,43,117,63,32,7,3,0,3,7,2,1,2,23,16,0,2,0,95,7,3,38,17,0,2,0,29,0,11,39,8,0,22,0,12,45,20,0,19,72,200,32,32,8,2,36,18,0,50,29,113,6,2,1,2,37,22,0,26,5,2,1,2,31,15,0,24,43,261,18,16,0,2,12,2,33,125,0,80,921,103,110,18,195,2637,96,16,1071,18,5,26,3994,6,582,6842,29,1763,568,8,30,18,78,18,29,19,47,17,3,32,20,6,18,433,44,212,63,33,24,3,24,45,74,6,0,67,12,65,1,2,0,15,4,10,7381,42,31,98,114,8702,3,2,6,2,1,2,290,16,0,30,2,3,0,15,3,9,395,2309,106,6,12,4,8,8,9,5991,84,2,70,2,1,3,0,3,1,3,3,2,11,2,0,2,6,2,64,2,3,3,7,2,6,2,27,2,3,2,4,2,0,4,6,2,339,3,24,2,24,2,30,2,24,2,30,2,24,2,30,2,24,2,30,2,24,2,7,1845,30,7,5,262,61,147,44,11,6,17,0,322,29,19,43,485,27,229,29,3,0,208,30,2,2,2,1,2,6,3,4,10,1,225,6,2,3,2,1,2,14,2,196,60,67,8,0,1205,3,2,26,2,1,2,0,3,0,2,9,2,3,2,0,2,0,7,0,5,0,2,0,2,0,2,2,2,1,2,0,3,0,2,0,2,0,2,0,2,0,2,1,2,0,3,3,2,6,2,3,2,3,2,0,2,9,2,16,6,2,2,4,2,16,4421,42719,33,4381,3,5773,3,7472,16,621,2467,541,1507,4938,6,8489];\n/* prettier-ignore */\nconst astralIdentifierCodes = [509,0,227,0,150,4,294,9,1368,2,2,1,6,3,41,2,5,0,166,1,574,3,9,9,7,9,32,4,318,1,78,5,71,10,50,3,123,2,54,14,32,10,3,1,11,3,46,10,8,0,46,9,7,2,37,13,2,9,6,1,45,0,13,2,49,13,9,3,2,11,83,11,7,0,3,0,158,11,6,9,7,3,56,1,2,6,3,1,3,2,10,0,11,1,3,6,4,4,68,8,2,0,3,0,2,3,2,4,2,0,15,1,83,17,10,9,5,0,82,19,13,9,214,6,3,8,28,1,83,16,16,9,82,12,9,9,7,19,58,14,5,9,243,14,166,9,71,5,2,1,3,3,2,0,2,1,13,9,120,6,3,6,4,0,29,9,41,6,2,3,9,0,10,10,47,15,199,7,137,9,54,7,2,7,17,9,57,21,2,13,123,5,4,0,2,1,2,6,2,0,9,9,49,4,2,1,2,4,9,9,55,9,266,3,10,1,2,0,49,6,4,4,14,10,5350,0,7,14,11465,27,2343,9,87,9,39,4,60,6,26,9,535,9,470,0,2,54,8,3,82,0,12,1,19628,1,4178,9,519,45,3,22,543,4,4,5,9,7,3,6,31,3,149,2,1418,49,513,54,5,49,9,0,15,0,23,4,2,14,1361,6,2,16,3,6,2,1,2,4,101,0,161,6,10,9,357,0,62,13,499,13,245,1,2,9,233,0,3,0,8,1,6,0,475,6,110,6,6,9,4759,9,787719,239];\n\n// This has a complexity linear to the value of the code. The\n// assumption is that looking up astral identifier characters is\n// rare.\nfunction isInAstralSet(code: number, set: readonly number[]): boolean {\n let pos = 0x10000;\n for (let i = 0, length = set.length; i < length; i += 2) {\n pos += set[i];\n if (pos > code) return false;\n\n pos += set[i + 1];\n if (pos >= code) return true;\n }\n return false;\n}\n\n// Test whether a given character code starts an identifier.\n\nexport function isIdentifierStart(code: number): boolean {\n if (code < charCodes.uppercaseA) return code === charCodes.dollarSign;\n if (code <= charCodes.uppercaseZ) return true;\n if (code < charCodes.lowercaseA) return code === charCodes.underscore;\n if (code <= charCodes.lowercaseZ) return true;\n if (code <= 0xffff) {\n return (\n code >= 0xaa && nonASCIIidentifierStart.test(String.fromCharCode(code))\n );\n }\n return isInAstralSet(code, astralIdentifierStartCodes);\n}\n\n// Test whether a given character is part of an identifier.\n\nexport function isIdentifierChar(code: number): boolean {\n if (code < charCodes.digit0) return code === charCodes.dollarSign;\n if (code < charCodes.colon) return true;\n if (code < charCodes.uppercaseA) return false;\n if (code <= charCodes.uppercaseZ) return true;\n if (code < charCodes.lowercaseA) return code === charCodes.underscore;\n if (code <= charCodes.lowercaseZ) return true;\n if (code <= 0xffff) {\n return code >= 0xaa && nonASCIIidentifier.test(String.fromCharCode(code));\n }\n return (\n isInAstralSet(code, astralIdentifierStartCodes) ||\n isInAstralSet(code, astralIdentifierCodes)\n );\n}\n\n// Test whether a given string is a valid identifier name\n\nexport function isIdentifierName(name: string): boolean {\n let isFirst = true;\n for (let i = 0; i < name.length; i++) {\n // The implementation is based on\n // https://source.chromium.org/chromium/chromium/src/+/master:v8/src/builtins/builtins-string-gen.cc;l=1455;drc=221e331b49dfefadbc6fa40b0c68e6f97606d0b3;bpv=0;bpt=1\n // We reimplement `codePointAt` because `codePointAt` is a V8 builtin which is not inlined by TurboFan (as of M91)\n // since `name` is mostly ASCII, an inlined `charCodeAt` wins here\n let cp = name.charCodeAt(i);\n if ((cp & 0xfc00) === 0xd800 && i + 1 < name.length) {\n const trail = name.charCodeAt(++i);\n if ((trail & 0xfc00) === 0xdc00) {\n cp = 0x10000 + ((cp & 0x3ff) << 10) + (trail & 0x3ff);\n }\n }\n if (isFirst) {\n isFirst = false;\n if (!isIdentifierStart(cp)) {\n return false;\n }\n } else if (!isIdentifierChar(cp)) {\n return false;\n }\n }\n return !isFirst;\n}\n","const reservedWords = {\n keyword: [\n \"break\",\n \"case\",\n \"catch\",\n \"continue\",\n \"debugger\",\n \"default\",\n \"do\",\n \"else\",\n \"finally\",\n \"for\",\n \"function\",\n \"if\",\n \"return\",\n \"switch\",\n \"throw\",\n \"try\",\n \"var\",\n \"const\",\n \"while\",\n \"with\",\n \"new\",\n \"this\",\n \"super\",\n \"class\",\n \"extends\",\n \"export\",\n \"import\",\n \"null\",\n \"true\",\n \"false\",\n \"in\",\n \"instanceof\",\n \"typeof\",\n \"void\",\n \"delete\",\n ],\n strict: [\n \"implements\",\n \"interface\",\n \"let\",\n \"package\",\n \"private\",\n \"protected\",\n \"public\",\n \"static\",\n \"yield\",\n ],\n strictBind: [\"eval\", \"arguments\"],\n};\nconst keywords = new Set(reservedWords.keyword);\nconst reservedWordsStrictSet = new Set(reservedWords.strict);\nconst reservedWordsStrictBindSet = new Set(reservedWords.strictBind);\n\n/**\n * Checks if word is a reserved word in non-strict mode\n */\nexport function isReservedWord(word: string, inModule: boolean): boolean {\n return (inModule && word === \"await\") || word === \"enum\";\n}\n\n/**\n * Checks if word is a reserved word in non-binding strict mode\n *\n * Includes non-strict reserved words\n */\nexport function isStrictReservedWord(word: string, inModule: boolean): boolean {\n return isReservedWord(word, inModule) || reservedWordsStrictSet.has(word);\n}\n\n/**\n * Checks if word is a reserved word in binding strict mode, but it is allowed as\n * a normal identifier.\n */\nexport function isStrictBindOnlyReservedWord(word: string): boolean {\n return reservedWordsStrictBindSet.has(word);\n}\n\n/**\n * Checks if word is a reserved word in binding strict mode\n *\n * Includes non-strict reserved words and non-binding strict reserved words\n */\nexport function isStrictBindReservedWord(\n word: string,\n inModule: boolean,\n): boolean {\n return (\n isStrictReservedWord(word, inModule) || isStrictBindOnlyReservedWord(word)\n );\n}\n\nexport function isKeyword(word: string): boolean {\n return keywords.has(word);\n}\n","import * as charCodes from \"charcodes\";\nimport { isIdentifierStart } from \"@babel/helper-validator-identifier\";\n\nexport {\n isIdentifierStart,\n isIdentifierChar,\n isReservedWord,\n isStrictBindOnlyReservedWord,\n isStrictBindReservedWord,\n isStrictReservedWord,\n isKeyword,\n} from \"@babel/helper-validator-identifier\";\n\nexport const keywordRelationalOperator = /^in(stanceof)?$/;\n\n// Test whether a current state character code and next character code is @\n\nexport function isIteratorStart(\n current: number,\n next: number,\n next2: number,\n): boolean {\n return (\n current === charCodes.atSign &&\n next === charCodes.atSign &&\n isIdentifierStart(next2)\n );\n}\n\n// This is the comprehensive set of JavaScript reserved words\n// If a word is in this set, it could be a reserved word,\n// depending on sourceType/strictMode/binding info. In other words\n// if a word is not in this set, it is not a reserved word under\n// any circumstance.\nconst reservedWordLikeSet = new Set([\n \"break\",\n \"case\",\n \"catch\",\n \"continue\",\n \"debugger\",\n \"default\",\n \"do\",\n \"else\",\n \"finally\",\n \"for\",\n \"function\",\n \"if\",\n \"return\",\n \"switch\",\n \"throw\",\n \"try\",\n \"var\",\n \"const\",\n \"while\",\n \"with\",\n \"new\",\n \"this\",\n \"super\",\n \"class\",\n \"extends\",\n \"export\",\n \"import\",\n \"null\",\n \"true\",\n \"false\",\n \"in\",\n \"instanceof\",\n \"typeof\",\n \"void\",\n \"delete\",\n // strict\n \"implements\",\n \"interface\",\n \"let\",\n \"package\",\n \"private\",\n \"protected\",\n \"public\",\n \"static\",\n \"yield\",\n // strictBind\n \"eval\",\n \"arguments\",\n // reservedWorkLike\n \"enum\",\n \"await\",\n]);\n\nexport function canBeReservedWord(word: string): boolean {\n return reservedWordLikeSet.has(word);\n}\n","import { ScopeFlag, BindingFlag } from \"./scopeflags.ts\";\nimport type { Position } from \"./location.ts\";\nimport type * as N from \"../types.ts\";\nimport { Errors } from \"../parse-error.ts\";\nimport type Tokenizer from \"../tokenizer/index.ts\";\n\nexport const enum NameType {\n // var-declared names in the current lexical scope\n Var = 1 << 0,\n // lexically-declared names in the current lexical scope\n Lexical = 1 << 1,\n // lexically-declared FunctionDeclaration names in the current lexical scope\n Function = 1 << 2,\n}\n\n// Start an AST node, attaching a start offset.\nexport class Scope {\n flags: ScopeFlag = 0;\n names = new Map();\n firstLexicalName = \"\";\n\n constructor(flags: ScopeFlag) {\n this.flags = flags;\n }\n}\n\n// The functions in this module keep track of declared variables in the\n// current scope in order to detect duplicate variable names.\nexport default class ScopeHandler {\n parser: Tokenizer;\n scopeStack: IScope[] = [];\n inModule: boolean;\n undefinedExports = new Map();\n\n constructor(parser: Tokenizer, inModule: boolean) {\n this.parser = parser;\n this.inModule = inModule;\n }\n\n get inTopLevel() {\n return (this.currentScope().flags & ScopeFlag.PROGRAM) > 0;\n }\n get inFunction() {\n return (this.currentVarScopeFlags() & ScopeFlag.FUNCTION_BASE) > 0;\n }\n get allowSuper() {\n return (this.currentThisScopeFlags() & ScopeFlag.SUPER) > 0;\n }\n get allowDirectSuper() {\n return (this.currentThisScopeFlags() & ScopeFlag.DIRECT_SUPER) > 0;\n }\n get allowNewTarget() {\n return (this.currentThisScopeFlags() & ScopeFlag.NEW_TARGET) > 0;\n }\n get inClass() {\n return (this.currentThisScopeFlags() & ScopeFlag.CLASS_BASE) > 0;\n }\n get inClassAndNotInNonArrowFunction() {\n const flags = this.currentThisScopeFlags();\n return (\n (flags & ScopeFlag.CLASS_BASE) > 0 &&\n (flags & ScopeFlag.FUNCTION_BASE) === 0\n );\n }\n get inStaticBlock() {\n for (let i = this.scopeStack.length - 1; ; i--) {\n const { flags } = this.scopeStack[i];\n if (flags & ScopeFlag.STATIC_BLOCK) {\n return true;\n }\n if (flags & (ScopeFlag.VAR | ScopeFlag.CLASS_BASE)) {\n // function body, module body, class property initializers\n return false;\n }\n }\n }\n get inNonArrowFunction() {\n return (this.currentThisScopeFlags() & ScopeFlag.FUNCTION_BASE) > 0;\n }\n get inBareCaseStatement() {\n return (this.currentScope().flags & ScopeFlag.SWITCH) > 0;\n }\n get treatFunctionsAsVar() {\n return this.treatFunctionsAsVarInScope(this.currentScope());\n }\n\n createScope(flags: ScopeFlag): Scope {\n return new Scope(flags);\n }\n\n enter(flags: ScopeFlag) {\n /*:: +createScope: (flags:ScopeFlag) => IScope; */\n // @ts-expect-error This method will be overwritten by subclasses\n this.scopeStack.push(this.createScope(flags));\n }\n\n exit(): ScopeFlag {\n const scope = this.scopeStack.pop()!;\n return scope.flags;\n }\n\n // The spec says:\n // > At the top level of a function, or script, function declarations are\n // > treated like var declarations rather than like lexical declarations.\n treatFunctionsAsVarInScope(scope: IScope): boolean {\n return !!(\n scope.flags & (ScopeFlag.FUNCTION_BASE | ScopeFlag.STATIC_BLOCK) ||\n (!this.parser.inModule && scope.flags & ScopeFlag.PROGRAM)\n );\n }\n\n declareName(name: string, bindingType: BindingFlag, loc: Position) {\n let scope = this.currentScope();\n if (\n bindingType & BindingFlag.SCOPE_LEXICAL ||\n bindingType & BindingFlag.SCOPE_FUNCTION\n ) {\n this.checkRedeclarationInScope(scope, name, bindingType, loc);\n\n let type = scope.names.get(name) || 0;\n\n if (bindingType & BindingFlag.SCOPE_FUNCTION) {\n type = type | NameType.Function;\n } else {\n if (!scope.firstLexicalName) {\n scope.firstLexicalName = name;\n }\n type = type | NameType.Lexical;\n }\n\n scope.names.set(name, type);\n\n if (bindingType & BindingFlag.SCOPE_LEXICAL) {\n this.maybeExportDefined(scope, name);\n }\n } else if (bindingType & BindingFlag.SCOPE_VAR) {\n for (let i = this.scopeStack.length - 1; i >= 0; --i) {\n scope = this.scopeStack[i];\n this.checkRedeclarationInScope(scope, name, bindingType, loc);\n scope.names.set(name, (scope.names.get(name) || 0) | NameType.Var);\n this.maybeExportDefined(scope, name);\n\n if (scope.flags & ScopeFlag.VAR) break;\n }\n }\n if (this.parser.inModule && scope.flags & ScopeFlag.PROGRAM) {\n this.undefinedExports.delete(name);\n }\n }\n\n maybeExportDefined(scope: IScope, name: string) {\n if (this.parser.inModule && scope.flags & ScopeFlag.PROGRAM) {\n this.undefinedExports.delete(name);\n }\n }\n\n checkRedeclarationInScope(\n scope: IScope,\n name: string,\n bindingType: BindingFlag,\n loc: Position,\n ) {\n if (this.isRedeclaredInScope(scope, name, bindingType)) {\n this.parser.raise(Errors.VarRedeclaration, loc, {\n identifierName: name,\n });\n }\n }\n\n isRedeclaredInScope(\n scope: IScope,\n name: string,\n bindingType: BindingFlag,\n ): boolean {\n if (!(bindingType & BindingFlag.KIND_VALUE)) return false;\n\n if (bindingType & BindingFlag.SCOPE_LEXICAL) {\n return scope.names.has(name);\n }\n\n const type = scope.names.get(name) || 0;\n\n if (bindingType & BindingFlag.SCOPE_FUNCTION) {\n return (\n (type & NameType.Lexical) > 0 ||\n (!this.treatFunctionsAsVarInScope(scope) && (type & NameType.Var) > 0)\n );\n }\n\n return (\n ((type & NameType.Lexical) > 0 &&\n // Annex B.3.4\n // https://tc39.es/ecma262/#sec-variablestatements-in-catch-blocks\n !(\n scope.flags & ScopeFlag.SIMPLE_CATCH &&\n scope.firstLexicalName === name\n )) ||\n (!this.treatFunctionsAsVarInScope(scope) &&\n (type & NameType.Function) > 0)\n );\n }\n\n checkLocalExport(id: N.Identifier) {\n const { name } = id;\n const topLevelScope = this.scopeStack[0];\n if (!topLevelScope.names.has(name)) {\n this.undefinedExports.set(name, id.loc.start);\n }\n }\n\n currentScope(): IScope {\n return this.scopeStack[this.scopeStack.length - 1];\n }\n\n currentVarScopeFlags(): ScopeFlag {\n for (let i = this.scopeStack.length - 1; ; i--) {\n const { flags } = this.scopeStack[i];\n if (flags & ScopeFlag.VAR) {\n return flags;\n }\n }\n }\n\n // Could be useful for `arguments`, `this`, `new.target`, `super()`, `super.property`, and `super[property]`.\n currentThisScopeFlags(): ScopeFlag {\n for (let i = this.scopeStack.length - 1; ; i--) {\n const { flags } = this.scopeStack[i];\n if (\n flags & (ScopeFlag.VAR | ScopeFlag.CLASS_BASE) &&\n !(flags & ScopeFlag.ARROW)\n ) {\n return flags;\n }\n }\n }\n}\n","import type { Position } from \"../../util/location.ts\";\nimport ScopeHandler, { NameType, Scope } from \"../../util/scope.ts\";\nimport { BindingFlag, type ScopeFlag } from \"../../util/scopeflags.ts\";\nimport type * as N from \"../../types.ts\";\n\n// Reference implementation: https://github.com/facebook/flow/blob/23aeb2a2ef6eb4241ce178fde5d8f17c5f747fb5/src/typing/env.ml#L536-L584\nclass FlowScope extends Scope {\n // declare function foo(): type;\n declareFunctions = new Set();\n}\n\nexport default class FlowScopeHandler extends ScopeHandler {\n createScope(flags: ScopeFlag): FlowScope {\n return new FlowScope(flags);\n }\n\n declareName(name: string, bindingType: BindingFlag, loc: Position) {\n const scope = this.currentScope();\n if (bindingType & BindingFlag.FLAG_FLOW_DECLARE_FN) {\n this.checkRedeclarationInScope(scope, name, bindingType, loc);\n this.maybeExportDefined(scope, name);\n scope.declareFunctions.add(name);\n return;\n }\n\n super.declareName(name, bindingType, loc);\n }\n\n isRedeclaredInScope(\n scope: FlowScope,\n name: string,\n bindingType: BindingFlag,\n ): boolean {\n if (super.isRedeclaredInScope(scope, name, bindingType)) return true;\n\n if (\n bindingType & BindingFlag.FLAG_FLOW_DECLARE_FN &&\n !scope.declareFunctions.has(name)\n ) {\n const type = scope.names.get(name)!;\n return (type & NameType.Function) > 0 || (type & NameType.Lexical) > 0;\n }\n\n return false;\n }\n\n checkLocalExport(id: N.Identifier) {\n if (!this.scopeStack[0].declareFunctions.has(id.name)) {\n super.checkLocalExport(id);\n }\n }\n}\n","/*:: declare var invariant; */\n\nimport type Parser from \"../../parser/index.ts\";\nimport {\n tokenIsIdentifier,\n tokenIsKeyword,\n tokenIsKeywordOrIdentifier,\n tokenIsLiteralPropertyName,\n tokenLabelName,\n tt,\n type TokenType,\n tokenIsFlowInterfaceOrTypeOrOpaque,\n} from \"../../tokenizer/types.ts\";\nimport type * as N from \"../../types.ts\";\nimport type { Position } from \"../../util/location.ts\";\nimport { types as tc } from \"../../tokenizer/context.ts\";\nimport * as charCodes from \"charcodes\";\nimport { isIteratorStart } from \"../../util/identifier.ts\";\nimport FlowScopeHandler from \"./scope.ts\";\nimport { BindingFlag, ScopeFlag } from \"../../util/scopeflags.ts\";\nimport type { ExpressionErrors } from \"../../parser/util.ts\";\nimport type { ParseStatementFlag } from \"../../parser/statement.ts\";\nimport { Errors, ParseErrorEnum } from \"../../parse-error.ts\";\nimport type { Undone } from \"../../parser/node.ts\";\nimport type { ClassWithMixin, IJSXParserMixin } from \"../jsx/index.ts\";\n\nconst reservedTypes = new Set([\n \"_\",\n \"any\",\n \"bool\",\n \"boolean\",\n \"empty\",\n \"extends\",\n \"false\",\n \"interface\",\n \"mixed\",\n \"null\",\n \"number\",\n \"static\",\n \"string\",\n \"true\",\n \"typeof\",\n \"void\",\n]);\n\n/* eslint sort-keys: \"error\" */\n// The Errors key follows https://github.com/facebook/flow/blob/master/src/parser/parse_error.ml unless it does not exist\nconst FlowErrors = ParseErrorEnum`flow`({\n AmbiguousConditionalArrow:\n \"Ambiguous expression: wrap the arrow functions in parentheses to disambiguate.\",\n AmbiguousDeclareModuleKind:\n \"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.\",\n // TODO: When we get proper string enums in typescript make this ReservedType.\n // Not really worth it to do the whole $Values dance with reservedTypes set.\n AssignReservedType: ({ reservedType }: { reservedType: string }) =>\n `Cannot overwrite reserved type ${reservedType}.`,\n DeclareClassElement:\n \"The `declare` modifier can only appear on class fields.\",\n DeclareClassFieldInitializer:\n \"Initializers are not allowed in fields with the `declare` modifier.\",\n DuplicateDeclareModuleExports:\n \"Duplicate `declare module.exports` statement.\",\n EnumBooleanMemberNotInitialized: ({\n memberName,\n enumName,\n }: {\n memberName: string;\n enumName: string;\n }) =>\n `Boolean enum members need to be initialized. Use either \\`${memberName} = true,\\` or \\`${memberName} = false,\\` in enum \\`${enumName}\\`.`,\n EnumDuplicateMemberName: ({\n memberName,\n enumName,\n }: {\n memberName: string;\n enumName: string;\n }) =>\n `Enum member names need to be unique, but the name \\`${memberName}\\` has already been used before in enum \\`${enumName}\\`.`,\n EnumInconsistentMemberValues: ({ enumName }: { enumName: string }) =>\n `Enum \\`${enumName}\\` has inconsistent member initializers. Either use no initializers, or consistently use literals (either booleans, numbers, or strings) for all member initializers.`,\n EnumInvalidExplicitType: ({\n invalidEnumType,\n enumName,\n }: {\n invalidEnumType: string;\n enumName: string;\n }) =>\n `Enum type \\`${invalidEnumType}\\` is not valid. Use one of \\`boolean\\`, \\`number\\`, \\`string\\`, or \\`symbol\\` in enum \\`${enumName}\\`.`,\n EnumInvalidExplicitTypeUnknownSupplied: ({\n enumName,\n }: {\n enumName: string;\n }) =>\n `Supplied enum type is not valid. Use one of \\`boolean\\`, \\`number\\`, \\`string\\`, or \\`symbol\\` in enum \\`${enumName}\\`.`,\n\n // TODO: When moving to typescript, we should either have each of the\n // following errors only accept the specific strings they want:\n //\n // ...PrimaryType: explicitType: \"string\" | \"number\" | \"boolean\"\n // ...SymbolType: explicitType: \"symbol\"\n // ...UnknownType: explicitType: null\n //\n // Or, alternatively, merge these three errors together into one\n // `EnumInvalidMemberInitializer` error that can accept `EnumExplicitType`\n // without alteration, and then just have its message change based on the\n // explicitType.\n EnumInvalidMemberInitializerPrimaryType: ({\n enumName,\n memberName,\n explicitType,\n }: {\n enumName: string;\n memberName: string;\n explicitType: EnumExplicitType;\n }) =>\n `Enum \\`${enumName}\\` has type \\`${explicitType}\\`, so the initializer of \\`${memberName}\\` needs to be a ${explicitType} literal.`,\n EnumInvalidMemberInitializerSymbolType: ({\n enumName,\n memberName,\n }: {\n enumName: string;\n memberName: string;\n explicitType: EnumExplicitType;\n }) =>\n `Symbol enum members cannot be initialized. Use \\`${memberName},\\` in enum \\`${enumName}\\`.`,\n EnumInvalidMemberInitializerUnknownType: ({\n enumName,\n memberName,\n }: {\n enumName: string;\n memberName: string;\n explicitType: EnumExplicitType;\n }) =>\n `The enum member initializer for \\`${memberName}\\` needs to be a literal (either a boolean, number, or string) in enum \\`${enumName}\\`.`,\n EnumInvalidMemberName: ({\n enumName,\n memberName,\n suggestion,\n }: {\n enumName: string;\n memberName: string;\n suggestion: string;\n }) =>\n `Enum member names cannot start with lowercase 'a' through 'z'. Instead of using \\`${memberName}\\`, consider using \\`${suggestion}\\`, in enum \\`${enumName}\\`.`,\n EnumNumberMemberNotInitialized: ({\n enumName,\n memberName,\n }: {\n enumName: string;\n memberName: string;\n }) =>\n `Number enum members need to be initialized, e.g. \\`${memberName} = 1\\` in enum \\`${enumName}\\`.`,\n EnumStringMemberInconsistentlyInitialized: ({\n enumName,\n }: {\n enumName: string;\n }) =>\n `String enum members need to consistently either all use initializers, or use no initializers, in enum \\`${enumName}\\`.`,\n GetterMayNotHaveThisParam: \"A getter cannot have a `this` parameter.\",\n ImportReflectionHasImportType:\n \"An `import module` declaration can not use `type` or `typeof` keyword.\",\n ImportTypeShorthandOnlyInPureImport:\n \"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.\",\n InexactInsideExact:\n \"Explicit inexact syntax cannot appear inside an explicit exact object type.\",\n InexactInsideNonObject:\n \"Explicit inexact syntax cannot appear in class or interface definitions.\",\n InexactVariance: \"Explicit inexact syntax cannot have variance.\",\n InvalidNonTypeImportInDeclareModule:\n \"Imports within a `declare module` body must always be `import type` or `import typeof`.\",\n MissingTypeParamDefault:\n \"Type parameter declaration needs a default, since a preceding type parameter declaration has a default.\",\n NestedDeclareModule:\n \"`declare module` cannot be used inside another `declare module`.\",\n NestedFlowComment: \"Cannot have a flow comment inside another flow comment.\",\n PatternIsOptional: {\n message:\n \"A binding pattern parameter cannot be optional in an implementation signature.\",\n // For consistency in TypeScript and Flow error codes\n ...(!process.env.BABEL_8_BREAKING\n ? { reasonCode: \"OptionalBindingPattern\" }\n : {}),\n },\n SetterMayNotHaveThisParam: \"A setter cannot have a `this` parameter.\",\n SpreadVariance: \"Spread properties cannot have variance.\",\n ThisParamAnnotationRequired:\n \"A type annotation is required for the `this` parameter.\",\n ThisParamBannedInConstructor:\n \"Constructors cannot have a `this` parameter; constructors don't bind `this` like other functions.\",\n ThisParamMayNotBeOptional: \"The `this` parameter cannot be optional.\",\n ThisParamMustBeFirst:\n \"The `this` parameter must be the first function parameter.\",\n ThisParamNoDefault: \"The `this` parameter may not have a default value.\",\n TypeBeforeInitializer:\n \"Type annotations must come before default assignments, e.g. instead of `age = 25: number` use `age: number = 25`.\",\n TypeCastInPattern:\n \"The type cast expression is expected to be wrapped with parenthesis.\",\n UnexpectedExplicitInexactInObject:\n \"Explicit inexact syntax must appear at the end of an inexact object.\",\n UnexpectedReservedType: ({ reservedType }: { reservedType: string }) =>\n `Unexpected reserved type ${reservedType}.`,\n UnexpectedReservedUnderscore:\n \"`_` is only allowed as a type argument to call or new.\",\n UnexpectedSpaceBetweenModuloChecks:\n \"Spaces between `%` and `checks` are not allowed here.\",\n UnexpectedSpreadType:\n \"Spread operator cannot appear in class or interface definitions.\",\n UnexpectedSubtractionOperand:\n 'Unexpected token, expected \"number\" or \"bigint\".',\n UnexpectedTokenAfterTypeParameter:\n \"Expected an arrow function after this type parameter declaration.\",\n UnexpectedTypeParameterBeforeAsyncArrowFunction:\n \"Type parameters must come after the async keyword, e.g. instead of ` async () => {}`, use `async () => {}`.\",\n UnsupportedDeclareExportKind: ({\n unsupportedExportKind,\n suggestion,\n }: {\n unsupportedExportKind: string;\n suggestion: string;\n }) =>\n `\\`declare export ${unsupportedExportKind}\\` is not supported. Use \\`${suggestion}\\` instead.`,\n UnsupportedStatementInDeclareModule:\n \"Only declares and type imports are allowed inside declare module.\",\n UnterminatedFlowComment: \"Unterminated flow-comment.\",\n});\n/* eslint-disable sort-keys */\n\nfunction isEsModuleType(bodyElement: N.Node): boolean {\n return (\n bodyElement.type === \"DeclareExportAllDeclaration\" ||\n (bodyElement.type === \"DeclareExportDeclaration\" &&\n (!bodyElement.declaration ||\n (bodyElement.declaration.type !== \"TypeAlias\" &&\n bodyElement.declaration.type !== \"InterfaceDeclaration\")))\n );\n}\n\nfunction hasTypeImportKind(\n node: Undone,\n): boolean {\n return node.importKind === \"type\" || node.importKind === \"typeof\";\n}\n\nconst exportSuggestions = {\n const: \"declare export var\",\n let: \"declare export var\",\n type: \"export type\",\n interface: \"export interface\",\n};\n\n// Like Array#filter, but returns a tuple [ acceptedElements, discardedElements ]\nfunction partition(\n list: T[],\n test: (c: T, b: number, a: T[]) => boolean | undefined | null,\n): [T[], T[]] {\n const list1: T[] = [];\n const list2: T[] = [];\n for (let i = 0; i < list.length; i++) {\n (test(list[i], i, list) ? list1 : list2).push(list[i]);\n }\n return [list1, list2];\n}\n\nconst FLOW_PRAGMA_REGEX = /\\*?\\s*@((?:no)?flow)\\b/;\n\n// Flow enums types\ntype EnumExplicitType = null | \"boolean\" | \"number\" | \"string\" | \"symbol\";\n\ntype EnumContext = {\n enumName: string;\n explicitType: EnumExplicitType;\n memberName: string;\n};\n\ntype EnumMemberInit =\n | {\n type: \"number\";\n loc: Position;\n value: N.Node;\n }\n | {\n type: \"string\";\n loc: Position;\n value: N.Node;\n }\n | {\n type: \"boolean\";\n loc: Position;\n value: N.Node;\n }\n | {\n type: \"invalid\";\n loc: Position;\n }\n | {\n type: \"none\";\n loc: Position;\n };\n\nexport default (superClass: ClassWithMixin) =>\n class FlowParserMixin extends superClass implements Parser {\n // The value of the @flow/@noflow pragma. Initially undefined, transitions\n // to \"@flow\" or \"@noflow\" if we see a pragma. Transitions to null if we are\n // past the initial comment.\n flowPragma: void | null | \"flow\" | \"noflow\" = undefined;\n\n getScopeHandler(): new (...args: any) => FlowScopeHandler {\n return FlowScopeHandler;\n }\n\n shouldParseTypes(): boolean {\n return this.getPluginOption(\"flow\", \"all\") || this.flowPragma === \"flow\";\n }\n\n finishToken(type: TokenType, val: any): void {\n if (\n type !== tt.string &&\n type !== tt.semi &&\n type !== tt.interpreterDirective\n ) {\n if (this.flowPragma === undefined) {\n this.flowPragma = null;\n }\n }\n super.finishToken(type, val);\n }\n\n addComment(comment: N.Comment): void {\n if (this.flowPragma === undefined) {\n // Try to parse a flow pragma.\n const matches = FLOW_PRAGMA_REGEX.exec(comment.value);\n if (!matches) {\n // do nothing\n } else if (matches[1] === \"flow\") {\n this.flowPragma = \"flow\";\n } else if (matches[1] === \"noflow\") {\n this.flowPragma = \"noflow\";\n } else {\n throw new Error(\"Unexpected flow pragma\");\n }\n }\n super.addComment(comment);\n }\n\n flowParseTypeInitialiser(tok?: TokenType): N.FlowType {\n const oldInType = this.state.inType;\n this.state.inType = true;\n this.expect(tok || tt.colon);\n\n const type = this.flowParseType();\n this.state.inType = oldInType;\n return type;\n }\n\n flowParsePredicate(): N.FlowPredicate {\n const node = this.startNode();\n const moduloLoc = this.state.startLoc;\n this.next(); // eat `%`\n this.expectContextual(tt._checks);\n // Force '%' and 'checks' to be adjacent\n if (this.state.lastTokStartLoc!.index > moduloLoc.index + 1) {\n this.raise(FlowErrors.UnexpectedSpaceBetweenModuloChecks, moduloLoc);\n }\n if (this.eat(tt.parenL)) {\n node.value = super.parseExpression();\n this.expect(tt.parenR);\n return this.finishNode(node, \"DeclaredPredicate\");\n } else {\n return this.finishNode(node, \"InferredPredicate\");\n }\n }\n\n flowParseTypeAndPredicateInitialiser(): [\n N.FlowType | null,\n N.FlowPredicate | null,\n ] {\n const oldInType = this.state.inType;\n this.state.inType = true;\n this.expect(tt.colon);\n let type = null;\n let predicate = null;\n if (this.match(tt.modulo)) {\n this.state.inType = oldInType;\n predicate = this.flowParsePredicate();\n } else {\n type = this.flowParseType();\n this.state.inType = oldInType;\n if (this.match(tt.modulo)) {\n predicate = this.flowParsePredicate();\n }\n }\n return [type, predicate];\n }\n\n flowParseDeclareClass(\n node: Undone,\n ): N.FlowDeclareClass {\n this.next();\n this.flowParseInterfaceish(node, /*isClass*/ true);\n return this.finishNode(node, \"DeclareClass\");\n }\n\n flowParseDeclareFunction(\n node: Undone,\n ): N.FlowDeclareFunction {\n this.next();\n\n const id = (node.id = this.parseIdentifier());\n\n const typeNode = this.startNode();\n const typeContainer = this.startNode();\n\n if (this.match(tt.lt)) {\n typeNode.typeParameters = this.flowParseTypeParameterDeclaration();\n } else {\n typeNode.typeParameters = null;\n }\n\n this.expect(tt.parenL);\n const tmp = this.flowParseFunctionTypeParams();\n typeNode.params = tmp.params;\n typeNode.rest = tmp.rest;\n typeNode.this = tmp._this;\n this.expect(tt.parenR);\n\n [typeNode.returnType, node.predicate] =\n this.flowParseTypeAndPredicateInitialiser();\n\n typeContainer.typeAnnotation = this.finishNode(\n typeNode,\n \"FunctionTypeAnnotation\",\n );\n\n id.typeAnnotation = this.finishNode(typeContainer, \"TypeAnnotation\");\n\n this.resetEndLocation(id);\n this.semicolon();\n\n this.scope.declareName(\n node.id.name,\n BindingFlag.TYPE_FLOW_DECLARE_FN,\n node.id.loc.start,\n );\n\n return this.finishNode(node, \"DeclareFunction\");\n }\n\n flowParseDeclare(\n node: Undone,\n insideModule?: boolean,\n ): N.FlowDeclare {\n if (this.match(tt._class)) {\n return this.flowParseDeclareClass(node);\n } else if (this.match(tt._function)) {\n return this.flowParseDeclareFunction(node);\n } else if (this.match(tt._var)) {\n return this.flowParseDeclareVariable(node);\n } else if (this.eatContextual(tt._module)) {\n if (this.match(tt.dot)) {\n return this.flowParseDeclareModuleExports(node);\n } else {\n if (insideModule) {\n this.raise(\n FlowErrors.NestedDeclareModule,\n this.state.lastTokStartLoc!,\n );\n }\n return this.flowParseDeclareModule(node);\n }\n } else if (this.isContextual(tt._type)) {\n return this.flowParseDeclareTypeAlias(node);\n } else if (this.isContextual(tt._opaque)) {\n return this.flowParseDeclareOpaqueType(node);\n } else if (this.isContextual(tt._interface)) {\n return this.flowParseDeclareInterface(node);\n } else if (this.match(tt._export)) {\n return this.flowParseDeclareExportDeclaration(node, insideModule);\n }\n throw this.unexpected();\n }\n\n flowParseDeclareVariable(\n node: Undone,\n ): N.FlowDeclareVariable {\n this.next();\n node.id = this.flowParseTypeAnnotatableIdentifier(\n /*allowPrimitiveOverride*/ true,\n );\n this.scope.declareName(\n node.id.name,\n BindingFlag.TYPE_VAR,\n node.id.loc.start,\n );\n this.semicolon();\n return this.finishNode(node, \"DeclareVariable\");\n }\n\n flowParseDeclareModule(\n node: Undone,\n ): N.FlowDeclareModule {\n this.scope.enter(ScopeFlag.OTHER);\n\n if (this.match(tt.string)) {\n node.id = super.parseExprAtom();\n } else {\n node.id = this.parseIdentifier();\n }\n\n const bodyNode = (node.body = this.startNode());\n const body: N.Statement[] = (bodyNode.body = []);\n this.expect(tt.braceL);\n while (!this.match(tt.braceR)) {\n const bodyNode = this.startNode();\n\n if (this.match(tt._import)) {\n this.next();\n if (!this.isContextual(tt._type) && !this.match(tt._typeof)) {\n this.raise(\n FlowErrors.InvalidNonTypeImportInDeclareModule,\n this.state.lastTokStartLoc!,\n );\n }\n body.push(super.parseImport(bodyNode));\n } else {\n this.expectContextual(\n tt._declare,\n FlowErrors.UnsupportedStatementInDeclareModule,\n );\n body.push(this.flowParseDeclare(bodyNode, true));\n }\n }\n\n this.scope.exit();\n\n this.expect(tt.braceR);\n\n this.finishNode(bodyNode, \"BlockStatement\");\n\n let kind: \"CommonJS\" | \"ES\" | null = null;\n let hasModuleExport = false;\n body.forEach(bodyElement => {\n if (isEsModuleType(bodyElement)) {\n if (kind === \"CommonJS\") {\n this.raise(FlowErrors.AmbiguousDeclareModuleKind, bodyElement);\n }\n kind = \"ES\";\n } else if (bodyElement.type === \"DeclareModuleExports\") {\n if (hasModuleExport) {\n this.raise(FlowErrors.DuplicateDeclareModuleExports, bodyElement);\n }\n if (kind === \"ES\") {\n this.raise(FlowErrors.AmbiguousDeclareModuleKind, bodyElement);\n }\n kind = \"CommonJS\";\n hasModuleExport = true;\n }\n });\n\n node.kind = kind || \"CommonJS\";\n return this.finishNode(node, \"DeclareModule\");\n }\n\n flowParseDeclareExportDeclaration(\n node: Undone,\n insideModule?: boolean | null,\n ): N.FlowDeclareExportDeclaration {\n this.expect(tt._export);\n\n if (this.eat(tt._default)) {\n if (this.match(tt._function) || this.match(tt._class)) {\n // declare export default class ...\n // declare export default function ...\n node.declaration = this.flowParseDeclare(this.startNode());\n } else {\n // declare export default [type];\n node.declaration = this.flowParseType();\n this.semicolon();\n }\n node.default = true;\n\n return this.finishNode(node, \"DeclareExportDeclaration\");\n } else {\n if (\n this.match(tt._const) ||\n this.isLet() ||\n ((this.isContextual(tt._type) || this.isContextual(tt._interface)) &&\n !insideModule)\n ) {\n const label = this.state.value as\n | \"const\"\n | \"let\"\n | \"type\"\n | \"interface\";\n throw this.raise(\n FlowErrors.UnsupportedDeclareExportKind,\n this.state.startLoc,\n {\n unsupportedExportKind: label,\n suggestion: exportSuggestions[label],\n },\n );\n }\n\n if (\n this.match(tt._var) || // declare export var ...\n this.match(tt._function) || // declare export function ...\n this.match(tt._class) || // declare export class ...\n this.isContextual(tt._opaque) // declare export opaque ..\n ) {\n node.declaration = this.flowParseDeclare(this.startNode());\n node.default = false;\n\n return this.finishNode(node, \"DeclareExportDeclaration\");\n } else if (\n this.match(tt.star) || // declare export * from ''\n this.match(tt.braceL) || // declare export {} ...\n this.isContextual(tt._interface) || // declare export interface ...\n this.isContextual(tt._type) || // declare export type ...\n this.isContextual(tt._opaque) // declare export opaque type ...\n ) {\n node = this.parseExport(\n node as Undone,\n /* decorators */ null,\n );\n if (node.type === \"ExportNamedDeclaration\") {\n node.default = false;\n delete node.exportKind;\n return this.castNodeTo(\n node as N.ExportNamedDeclaration,\n \"DeclareExportDeclaration\",\n );\n } else {\n return this.castNodeTo(\n node as N.ExportAllDeclaration,\n \"DeclareExportAllDeclaration\",\n );\n }\n }\n }\n\n throw this.unexpected();\n }\n\n flowParseDeclareModuleExports(\n node: Undone,\n ): N.FlowDeclareModuleExports {\n this.next();\n this.expectContextual(tt._exports);\n node.typeAnnotation = this.flowParseTypeAnnotation();\n this.semicolon();\n\n return this.finishNode(node, \"DeclareModuleExports\");\n }\n\n flowParseDeclareTypeAlias(\n node: Undone,\n ): N.FlowDeclareTypeAlias {\n this.next();\n const finished = this.flowParseTypeAlias(\n node,\n ) as unknown as N.FlowDeclareTypeAlias;\n // Don't do finishNode as we don't want to process comments twice\n this.castNodeTo(finished, \"DeclareTypeAlias\");\n return finished;\n }\n\n flowParseDeclareOpaqueType(\n node: Undone,\n ): N.FlowDeclareOpaqueType {\n this.next();\n const finished = this.flowParseOpaqueType(\n node,\n true,\n ) as unknown as N.FlowDeclareOpaqueType;\n // Don't do finishNode as we don't want to process comments twice\n this.castNodeTo(finished, \"DeclareOpaqueType\");\n return finished;\n }\n\n flowParseDeclareInterface(\n node: Undone,\n ): N.FlowDeclareInterface {\n this.next();\n this.flowParseInterfaceish(node, /* isClass */ false);\n return this.finishNode(node, \"DeclareInterface\");\n }\n\n // Interfaces\n\n flowParseInterfaceish(node: Undone, isClass: boolean): void {\n node.id = this.flowParseRestrictedIdentifier(\n /* liberal */ !isClass,\n /* declaration */ true,\n );\n\n this.scope.declareName(\n node.id.name,\n isClass ? BindingFlag.TYPE_FUNCTION : BindingFlag.TYPE_LEXICAL,\n node.id.loc.start,\n );\n\n if (this.match(tt.lt)) {\n node.typeParameters = this.flowParseTypeParameterDeclaration();\n } else {\n node.typeParameters = null;\n }\n\n node.extends = [];\n\n if (this.eat(tt._extends)) {\n do {\n node.extends.push(this.flowParseInterfaceExtends());\n } while (!isClass && this.eat(tt.comma));\n }\n\n if (isClass) {\n node.implements = [];\n node.mixins = [];\n\n if (this.eatContextual(tt._mixins)) {\n do {\n node.mixins.push(this.flowParseInterfaceExtends());\n } while (this.eat(tt.comma));\n }\n\n if (this.eatContextual(tt._implements)) {\n do {\n node.implements.push(this.flowParseInterfaceExtends());\n } while (this.eat(tt.comma));\n }\n }\n\n node.body = this.flowParseObjectType({\n allowStatic: isClass,\n allowExact: false,\n allowSpread: false,\n allowProto: isClass,\n allowInexact: false,\n });\n }\n\n flowParseInterfaceExtends(): N.FlowInterfaceExtends {\n const node = this.startNode();\n\n node.id = this.flowParseQualifiedTypeIdentifier();\n if (this.match(tt.lt)) {\n node.typeParameters = this.flowParseTypeParameterInstantiation();\n } else {\n node.typeParameters = null;\n }\n\n return this.finishNode(node, \"InterfaceExtends\");\n }\n\n flowParseInterface(node: Undone): N.FlowInterface {\n this.flowParseInterfaceish(node, /* isClass */ false);\n return this.finishNode(node, \"InterfaceDeclaration\");\n }\n\n checkNotUnderscore(word: string) {\n if (word === \"_\") {\n this.raise(\n FlowErrors.UnexpectedReservedUnderscore,\n this.state.startLoc,\n );\n }\n }\n\n checkReservedType(word: string, startLoc: Position, declaration?: boolean) {\n if (!reservedTypes.has(word)) return;\n\n this.raise(\n declaration\n ? FlowErrors.AssignReservedType\n : FlowErrors.UnexpectedReservedType,\n startLoc,\n {\n reservedType: word,\n },\n );\n }\n\n flowParseRestrictedIdentifier(\n liberal?: boolean,\n declaration?: boolean,\n ): N.Identifier {\n this.checkReservedType(\n this.state.value,\n this.state.startLoc,\n declaration,\n );\n return this.parseIdentifier(liberal);\n }\n\n // Type aliases\n\n flowParseTypeAlias(node: Undone): N.FlowTypeAlias {\n node.id = this.flowParseRestrictedIdentifier(\n /* liberal */ false,\n /* declaration */ true,\n );\n this.scope.declareName(\n node.id.name,\n BindingFlag.TYPE_LEXICAL,\n node.id.loc.start,\n );\n\n if (this.match(tt.lt)) {\n node.typeParameters = this.flowParseTypeParameterDeclaration();\n } else {\n node.typeParameters = null;\n }\n\n node.right = this.flowParseTypeInitialiser(tt.eq);\n this.semicolon();\n\n return this.finishNode(node, \"TypeAlias\");\n }\n\n flowParseOpaqueType(\n node: Undone,\n declare: boolean,\n ): N.FlowOpaqueType {\n this.expectContextual(tt._type);\n node.id = this.flowParseRestrictedIdentifier(\n /* liberal */ true,\n /* declaration */ true,\n );\n this.scope.declareName(\n node.id.name,\n BindingFlag.TYPE_LEXICAL,\n node.id.loc.start,\n );\n\n if (this.match(tt.lt)) {\n node.typeParameters = this.flowParseTypeParameterDeclaration();\n } else {\n node.typeParameters = null;\n }\n\n // Parse the supertype\n node.supertype = null;\n if (this.match(tt.colon)) {\n node.supertype = this.flowParseTypeInitialiser(tt.colon);\n }\n\n node.impltype = null;\n if (!declare) {\n node.impltype = this.flowParseTypeInitialiser(tt.eq);\n }\n this.semicolon();\n\n return this.finishNode(node, \"OpaqueType\");\n }\n\n // Type annotations\n\n flowParseTypeParameter(requireDefault: boolean = false): N.TypeParameter {\n const nodeStartLoc = this.state.startLoc;\n\n const node = this.startNode();\n\n const variance = this.flowParseVariance();\n\n const ident = this.flowParseTypeAnnotatableIdentifier();\n node.name = ident.name;\n // @ts-expect-error migrate to Babel types\n node.variance = variance;\n // @ts-expect-error migrate to Babel types\n node.bound = ident.typeAnnotation;\n\n if (this.match(tt.eq)) {\n this.eat(tt.eq);\n // @ts-expect-error migrate to Babel types\n node.default = this.flowParseType();\n } else {\n if (requireDefault) {\n this.raise(FlowErrors.MissingTypeParamDefault, nodeStartLoc);\n }\n }\n\n return this.finishNode(node, \"TypeParameter\");\n }\n\n flowParseTypeParameterDeclaration(): N.TypeParameterDeclaration {\n const oldInType = this.state.inType;\n const node = this.startNode();\n node.params = [];\n\n this.state.inType = true;\n\n // istanbul ignore else: this condition is already checked at all call sites\n if (this.match(tt.lt) || this.match(tt.jsxTagStart)) {\n this.next();\n } else {\n this.unexpected();\n }\n\n let defaultRequired = false;\n\n do {\n const typeParameter = this.flowParseTypeParameter(defaultRequired);\n\n node.params.push(typeParameter);\n\n if (typeParameter.default) {\n defaultRequired = true;\n }\n\n if (!this.match(tt.gt)) {\n this.expect(tt.comma);\n }\n } while (!this.match(tt.gt));\n this.expect(tt.gt);\n\n this.state.inType = oldInType;\n\n return this.finishNode(node, \"TypeParameterDeclaration\");\n }\n\n // Parse in top level normal context if we are in a JSX context\n flowInTopLevelContext(cb: () => T): T {\n if (this.curContext() !== tc.brace) {\n const oldContext = this.state.context;\n this.state.context = [oldContext[0]];\n try {\n return cb();\n } finally {\n this.state.context = oldContext;\n }\n } else {\n return cb();\n }\n }\n\n // Used when parsing type arguments from ES or JSX productions, where the first token\n // has been created without state.inType. Thus we need to re-scan the lt token.\n flowParseTypeParameterInstantiationInExpression():\n | N.TypeParameterInstantiation\n | undefined {\n if (this.reScan_lt() !== tt.lt) return;\n return this.flowParseTypeParameterInstantiation();\n }\n\n flowParseTypeParameterInstantiation(): N.TypeParameterInstantiation {\n const node = this.startNode();\n const oldInType = this.state.inType;\n\n this.state.inType = true;\n node.params = [];\n this.flowInTopLevelContext(() => {\n this.expect(tt.lt);\n const oldNoAnonFunctionType = this.state.noAnonFunctionType;\n this.state.noAnonFunctionType = false;\n while (!this.match(tt.gt)) {\n node.params.push(this.flowParseType());\n if (!this.match(tt.gt)) {\n this.expect(tt.comma);\n }\n }\n this.state.noAnonFunctionType = oldNoAnonFunctionType;\n });\n\n this.state.inType = oldInType;\n if (!this.state.inType && this.curContext() === tc.brace) {\n // rescan `>` when we are no longer in type context and JSX parsing context\n // since it was tokenized when `inType` is `true`.\n this.reScan_lt_gt();\n }\n this.expect(tt.gt);\n\n return this.finishNode(node, \"TypeParameterInstantiation\");\n }\n\n flowParseTypeParameterInstantiationCallOrNew(): N.TypeParameterInstantiation | null {\n if (this.reScan_lt() !== tt.lt) return null;\n const node = this.startNode();\n const oldInType = this.state.inType;\n node.params = [];\n\n this.state.inType = true;\n\n this.expect(tt.lt);\n while (!this.match(tt.gt)) {\n node.params.push(this.flowParseTypeOrImplicitInstantiation());\n if (!this.match(tt.gt)) {\n this.expect(tt.comma);\n }\n }\n this.expect(tt.gt);\n\n this.state.inType = oldInType;\n\n return this.finishNode(node, \"TypeParameterInstantiation\");\n }\n\n flowParseInterfaceType(): N.FlowInterfaceType {\n const node = this.startNode();\n this.expectContextual(tt._interface);\n\n node.extends = [];\n if (this.eat(tt._extends)) {\n do {\n node.extends.push(this.flowParseInterfaceExtends());\n } while (this.eat(tt.comma));\n }\n\n node.body = this.flowParseObjectType({\n allowStatic: false,\n allowExact: false,\n allowSpread: false,\n allowProto: false,\n allowInexact: false,\n });\n\n return this.finishNode(node, \"InterfaceTypeAnnotation\");\n }\n\n flowParseObjectPropertyKey(): N.Expression {\n return this.match(tt.num) || this.match(tt.string)\n ? super.parseExprAtom()\n : this.parseIdentifier(true);\n }\n\n flowParseObjectTypeIndexer(\n node: Undone,\n isStatic: boolean,\n variance?: N.FlowVariance | null,\n ): N.FlowObjectTypeIndexer {\n node.static = isStatic;\n\n // Note: bracketL has already been consumed\n if (this.lookahead().type === tt.colon) {\n node.id = this.flowParseObjectPropertyKey();\n node.key = this.flowParseTypeInitialiser();\n } else {\n node.id = null;\n node.key = this.flowParseType();\n }\n this.expect(tt.bracketR);\n node.value = this.flowParseTypeInitialiser();\n node.variance = variance;\n\n return this.finishNode(node, \"ObjectTypeIndexer\");\n }\n\n flowParseObjectTypeInternalSlot(\n node: Undone,\n isStatic: boolean,\n ): N.FlowObjectTypeInternalSlot {\n node.static = isStatic;\n // Note: both bracketL have already been consumed\n node.id = this.flowParseObjectPropertyKey();\n this.expect(tt.bracketR);\n this.expect(tt.bracketR);\n if (this.match(tt.lt) || this.match(tt.parenL)) {\n node.method = true;\n node.optional = false;\n node.value = this.flowParseObjectTypeMethodish(\n this.startNodeAt(node.loc.start),\n );\n } else {\n node.method = false;\n if (this.eat(tt.question)) {\n node.optional = true;\n }\n node.value = this.flowParseTypeInitialiser();\n }\n return this.finishNode(node, \"ObjectTypeInternalSlot\");\n }\n\n flowParseObjectTypeMethodish(\n node: Undone,\n ): N.FlowFunctionTypeAnnotation {\n node.params = [];\n node.rest = null;\n node.typeParameters = null;\n node.this = null;\n\n if (this.match(tt.lt)) {\n node.typeParameters = this.flowParseTypeParameterDeclaration();\n }\n\n this.expect(tt.parenL);\n if (this.match(tt._this)) {\n node.this = this.flowParseFunctionTypeParam(/* first */ true);\n // match Flow parser behavior\n node.this.name = null;\n if (!this.match(tt.parenR)) {\n this.expect(tt.comma);\n }\n }\n while (!this.match(tt.parenR) && !this.match(tt.ellipsis)) {\n node.params.push(this.flowParseFunctionTypeParam(false));\n if (!this.match(tt.parenR)) {\n this.expect(tt.comma);\n }\n }\n\n if (this.eat(tt.ellipsis)) {\n node.rest = this.flowParseFunctionTypeParam(false);\n }\n this.expect(tt.parenR);\n node.returnType = this.flowParseTypeInitialiser();\n\n return this.finishNode(node, \"FunctionTypeAnnotation\");\n }\n\n flowParseObjectTypeCallProperty(\n node: Undone,\n isStatic: boolean,\n ): N.FlowObjectTypeCallProperty {\n const valueNode = this.startNode();\n node.static = isStatic;\n node.value = this.flowParseObjectTypeMethodish(valueNode);\n return this.finishNode(node, \"ObjectTypeCallProperty\");\n }\n\n flowParseObjectType({\n allowStatic,\n allowExact,\n allowSpread,\n allowProto,\n allowInexact,\n }: {\n allowStatic: boolean;\n allowExact: boolean;\n allowSpread: boolean;\n allowProto: boolean;\n allowInexact: boolean;\n }): N.FlowObjectTypeAnnotation {\n const oldInType = this.state.inType;\n this.state.inType = true;\n\n const nodeStart = this.startNode();\n\n nodeStart.callProperties = [];\n nodeStart.properties = [];\n nodeStart.indexers = [];\n nodeStart.internalSlots = [];\n\n let endDelim;\n let exact;\n let inexact = false;\n if (allowExact && this.match(tt.braceBarL)) {\n this.expect(tt.braceBarL);\n endDelim = tt.braceBarR;\n exact = true;\n } else {\n this.expect(tt.braceL);\n endDelim = tt.braceR;\n exact = false;\n }\n\n nodeStart.exact = exact;\n\n while (!this.match(endDelim)) {\n let isStatic = false;\n let protoStartLoc: Position | undefined | null = null;\n let inexactStartLoc: Position | undefined | null = null;\n const node = this.startNode();\n\n if (allowProto && this.isContextual(tt._proto)) {\n const lookahead = this.lookahead();\n\n if (lookahead.type !== tt.colon && lookahead.type !== tt.question) {\n this.next();\n protoStartLoc = this.state.startLoc;\n allowStatic = false;\n }\n }\n\n if (allowStatic && this.isContextual(tt._static)) {\n const lookahead = this.lookahead();\n\n // static is a valid identifier name\n if (lookahead.type !== tt.colon && lookahead.type !== tt.question) {\n this.next();\n isStatic = true;\n }\n }\n\n const variance = this.flowParseVariance();\n\n if (this.eat(tt.bracketL)) {\n if (protoStartLoc != null) {\n this.unexpected(protoStartLoc);\n }\n if (this.eat(tt.bracketL)) {\n if (variance) {\n this.unexpected(variance.loc.start);\n }\n nodeStart.internalSlots.push(\n this.flowParseObjectTypeInternalSlot(node, isStatic),\n );\n } else {\n nodeStart.indexers.push(\n this.flowParseObjectTypeIndexer(node, isStatic, variance),\n );\n }\n } else if (this.match(tt.parenL) || this.match(tt.lt)) {\n if (protoStartLoc != null) {\n this.unexpected(protoStartLoc);\n }\n if (variance) {\n this.unexpected(variance.loc.start);\n }\n nodeStart.callProperties.push(\n this.flowParseObjectTypeCallProperty(node, isStatic),\n );\n } else {\n let kind = \"init\";\n\n if (this.isContextual(tt._get) || this.isContextual(tt._set)) {\n const lookahead = this.lookahead();\n if (tokenIsLiteralPropertyName(lookahead.type)) {\n kind = this.state.value;\n this.next();\n }\n }\n\n const propOrInexact = this.flowParseObjectTypeProperty(\n node,\n isStatic,\n protoStartLoc,\n variance,\n kind,\n allowSpread,\n allowInexact ?? !exact,\n );\n\n if (propOrInexact === null) {\n inexact = true;\n inexactStartLoc = this.state.lastTokStartLoc;\n } else {\n nodeStart.properties.push(propOrInexact);\n }\n }\n\n this.flowObjectTypeSemicolon();\n\n if (\n inexactStartLoc &&\n !this.match(tt.braceR) &&\n !this.match(tt.braceBarR)\n ) {\n this.raise(\n FlowErrors.UnexpectedExplicitInexactInObject,\n inexactStartLoc,\n );\n }\n }\n\n this.expect(endDelim);\n\n /* The inexact flag should only be added on ObjectTypeAnnotations that\n * are not the body of an interface, declare interface, or declare class.\n * Since spreads are only allowed in object types, checking that is\n * sufficient here.\n */\n if (allowSpread) {\n nodeStart.inexact = inexact;\n }\n\n const out = this.finishNode(nodeStart, \"ObjectTypeAnnotation\");\n\n this.state.inType = oldInType;\n\n return out;\n }\n\n flowParseObjectTypeProperty(\n node: Undone,\n isStatic: boolean,\n protoStartLoc: Position | undefined | null,\n variance: N.FlowVariance | undefined | null,\n kind: string,\n allowSpread: boolean,\n allowInexact: boolean,\n ): N.FlowObjectTypeProperty | N.FlowObjectTypeSpreadProperty | null {\n if (this.eat(tt.ellipsis)) {\n const isInexactToken =\n this.match(tt.comma) ||\n this.match(tt.semi) ||\n this.match(tt.braceR) ||\n this.match(tt.braceBarR);\n\n if (isInexactToken) {\n if (!allowSpread) {\n this.raise(\n FlowErrors.InexactInsideNonObject,\n this.state.lastTokStartLoc!,\n );\n } else if (!allowInexact) {\n this.raise(\n FlowErrors.InexactInsideExact,\n this.state.lastTokStartLoc!,\n );\n }\n if (variance) {\n this.raise(FlowErrors.InexactVariance, variance);\n }\n\n return null;\n }\n\n if (!allowSpread) {\n this.raise(\n FlowErrors.UnexpectedSpreadType,\n this.state.lastTokStartLoc!,\n );\n }\n if (protoStartLoc != null) {\n this.unexpected(protoStartLoc);\n }\n if (variance) {\n this.raise(FlowErrors.SpreadVariance, variance);\n }\n\n node.argument = this.flowParseType();\n return this.finishNode(node, \"ObjectTypeSpreadProperty\");\n } else {\n node.key = this.flowParseObjectPropertyKey();\n node.static = isStatic;\n node.proto = protoStartLoc != null;\n node.kind = kind;\n\n let optional = false;\n if (this.match(tt.lt) || this.match(tt.parenL)) {\n // This is a method property\n node.method = true;\n\n if (protoStartLoc != null) {\n this.unexpected(protoStartLoc);\n }\n if (variance) {\n this.unexpected(variance.loc.start);\n }\n\n node.value = this.flowParseObjectTypeMethodish(\n this.startNodeAt(node.loc.start),\n );\n if (kind === \"get\" || kind === \"set\") {\n this.flowCheckGetterSetterParams(node);\n }\n /** Declared classes/interfaces do not allow spread */\n if (\n !allowSpread &&\n node.key.name === \"constructor\" &&\n node.value.this\n ) {\n this.raise(\n FlowErrors.ThisParamBannedInConstructor,\n node.value.this,\n );\n }\n } else {\n if (kind !== \"init\") this.unexpected();\n\n node.method = false;\n\n if (this.eat(tt.question)) {\n optional = true;\n }\n node.value = this.flowParseTypeInitialiser();\n node.variance = variance;\n }\n\n node.optional = optional;\n\n return this.finishNode(node, \"ObjectTypeProperty\");\n }\n }\n\n // This is similar to checkGetterSetterParams, but as\n // @babel/parser uses non estree properties we cannot reuse it here\n flowCheckGetterSetterParams(\n property: Undone<\n N.FlowObjectTypeProperty | N.FlowObjectTypeSpreadProperty\n >,\n ): void {\n const paramCount = property.kind === \"get\" ? 0 : 1;\n const length =\n property.value.params.length + (property.value.rest ? 1 : 0);\n\n if (property.value.this) {\n this.raise(\n property.kind === \"get\"\n ? FlowErrors.GetterMayNotHaveThisParam\n : FlowErrors.SetterMayNotHaveThisParam,\n property.value.this,\n );\n }\n\n if (length !== paramCount) {\n this.raise(\n property.kind === \"get\"\n ? Errors.BadGetterArity\n : Errors.BadSetterArity,\n property,\n );\n }\n\n if (property.kind === \"set\" && property.value.rest) {\n this.raise(Errors.BadSetterRestParameter, property);\n }\n }\n\n flowObjectTypeSemicolon(): void {\n if (\n !this.eat(tt.semi) &&\n !this.eat(tt.comma) &&\n !this.match(tt.braceR) &&\n !this.match(tt.braceBarR)\n ) {\n this.unexpected();\n }\n }\n\n flowParseQualifiedTypeIdentifier(\n startLoc?: Position,\n id?: N.Identifier,\n ): N.FlowQualifiedTypeIdentifier | N.Identifier {\n startLoc ??= this.state.startLoc;\n let node: N.Identifier | N.FlowQualifiedTypeIdentifier =\n id || this.flowParseRestrictedIdentifier(true);\n\n while (this.eat(tt.dot)) {\n const node2 = this.startNodeAt(startLoc);\n node2.qualification = node;\n node2.id = this.flowParseRestrictedIdentifier(true);\n node = this.finishNode(node2, \"QualifiedTypeIdentifier\");\n }\n\n return node;\n }\n\n flowParseGenericType(\n startLoc: Position,\n id: N.Identifier,\n ): N.FlowGenericTypeAnnotation {\n const node = this.startNodeAt(startLoc);\n\n node.typeParameters = null;\n node.id = this.flowParseQualifiedTypeIdentifier(startLoc, id);\n\n if (this.match(tt.lt)) {\n node.typeParameters = this.flowParseTypeParameterInstantiation();\n }\n\n return this.finishNode(node, \"GenericTypeAnnotation\");\n }\n\n flowParseTypeofType(): N.FlowTypeofTypeAnnotation {\n const node = this.startNode();\n this.expect(tt._typeof);\n node.argument = this.flowParsePrimaryType();\n return this.finishNode(node, \"TypeofTypeAnnotation\");\n }\n\n flowParseTupleType(): N.FlowTupleTypeAnnotation {\n const node = this.startNode();\n node.types = [];\n this.expect(tt.bracketL);\n // We allow trailing commas\n while (this.state.pos < this.length && !this.match(tt.bracketR)) {\n node.types.push(this.flowParseType());\n if (this.match(tt.bracketR)) break;\n this.expect(tt.comma);\n }\n this.expect(tt.bracketR);\n return this.finishNode(node, \"TupleTypeAnnotation\");\n }\n\n flowParseFunctionTypeParam(first: boolean): N.FlowFunctionTypeParam {\n let name = null;\n let optional = false;\n let typeAnnotation = null;\n const node = this.startNode();\n const lh = this.lookahead();\n const isThis = this.state.type === tt._this;\n\n if (lh.type === tt.colon || lh.type === tt.question) {\n if (isThis && !first) {\n this.raise(FlowErrors.ThisParamMustBeFirst, node);\n }\n name = this.parseIdentifier(isThis);\n if (this.eat(tt.question)) {\n optional = true;\n if (isThis) {\n this.raise(FlowErrors.ThisParamMayNotBeOptional, node);\n }\n }\n typeAnnotation = this.flowParseTypeInitialiser();\n } else {\n typeAnnotation = this.flowParseType();\n }\n node.name = name;\n node.optional = optional;\n node.typeAnnotation = typeAnnotation;\n return this.finishNode(node, \"FunctionTypeParam\");\n }\n\n reinterpretTypeAsFunctionTypeParam(\n type: N.FlowType,\n ): N.FlowFunctionTypeParam {\n const node = this.startNodeAt(type.loc.start);\n node.name = null;\n node.optional = false;\n node.typeAnnotation = type;\n return this.finishNode(node, \"FunctionTypeParam\");\n }\n\n flowParseFunctionTypeParams(params: N.FlowFunctionTypeParam[] = []): {\n params: N.FlowFunctionTypeParam[];\n rest: N.FlowFunctionTypeParam | undefined | null;\n _this: N.FlowFunctionTypeParam | undefined | null;\n } {\n let rest: N.FlowFunctionTypeParam | undefined | null = null;\n let _this: N.FlowFunctionTypeParam | undefined | null = null;\n if (this.match(tt._this)) {\n _this = this.flowParseFunctionTypeParam(/* first */ true);\n // match Flow parser behavior\n _this.name = null;\n if (!this.match(tt.parenR)) {\n this.expect(tt.comma);\n }\n }\n while (!this.match(tt.parenR) && !this.match(tt.ellipsis)) {\n params.push(this.flowParseFunctionTypeParam(false));\n if (!this.match(tt.parenR)) {\n this.expect(tt.comma);\n }\n }\n if (this.eat(tt.ellipsis)) {\n rest = this.flowParseFunctionTypeParam(false);\n }\n return { params, rest, _this };\n }\n\n flowIdentToTypeAnnotation(\n startLoc: Position,\n node: Undone,\n id: N.Identifier,\n ): N.FlowType {\n switch (id.name) {\n case \"any\":\n return this.finishNode(node, \"AnyTypeAnnotation\");\n\n case \"bool\":\n case \"boolean\":\n return this.finishNode(node, \"BooleanTypeAnnotation\");\n\n case \"mixed\":\n return this.finishNode(node, \"MixedTypeAnnotation\");\n\n case \"empty\":\n return this.finishNode(node, \"EmptyTypeAnnotation\");\n\n case \"number\":\n return this.finishNode(node, \"NumberTypeAnnotation\");\n\n case \"string\":\n return this.finishNode(node, \"StringTypeAnnotation\");\n\n case \"symbol\":\n return this.finishNode(node, \"SymbolTypeAnnotation\");\n\n default:\n this.checkNotUnderscore(id.name);\n return this.flowParseGenericType(startLoc, id);\n }\n }\n\n // The parsing of types roughly parallels the parsing of expressions, and\n // primary types are kind of like primary expressions...they're the\n // primitives with which other types are constructed.\n flowParsePrimaryType(): N.FlowType {\n const startLoc = this.state.startLoc;\n const node = this.startNode();\n let tmp;\n let type;\n let isGroupedType = false;\n const oldNoAnonFunctionType = this.state.noAnonFunctionType;\n\n switch (this.state.type) {\n case tt.braceL:\n return this.flowParseObjectType({\n allowStatic: false,\n allowExact: false,\n allowSpread: true,\n allowProto: false,\n allowInexact: true,\n });\n\n case tt.braceBarL:\n return this.flowParseObjectType({\n allowStatic: false,\n allowExact: true,\n allowSpread: true,\n allowProto: false,\n allowInexact: false,\n });\n\n case tt.bracketL:\n this.state.noAnonFunctionType = false;\n type = this.flowParseTupleType();\n this.state.noAnonFunctionType = oldNoAnonFunctionType;\n return type;\n\n case tt.lt: {\n const node = this.startNode();\n node.typeParameters = this.flowParseTypeParameterDeclaration();\n this.expect(tt.parenL);\n tmp = this.flowParseFunctionTypeParams();\n node.params = tmp.params;\n node.rest = tmp.rest;\n node.this = tmp._this;\n this.expect(tt.parenR);\n\n this.expect(tt.arrow);\n\n node.returnType = this.flowParseType();\n\n return this.finishNode(node, \"FunctionTypeAnnotation\");\n }\n\n case tt.parenL: {\n const node = this.startNode();\n this.next();\n\n // Check to see if this is actually a grouped type\n if (!this.match(tt.parenR) && !this.match(tt.ellipsis)) {\n if (tokenIsIdentifier(this.state.type) || this.match(tt._this)) {\n const token = this.lookahead().type;\n isGroupedType = token !== tt.question && token !== tt.colon;\n } else {\n isGroupedType = true;\n }\n }\n\n if (isGroupedType) {\n this.state.noAnonFunctionType = false;\n type = this.flowParseType();\n this.state.noAnonFunctionType = oldNoAnonFunctionType;\n\n // A `,` or a `) =>` means this is an anonymous function type\n if (\n this.state.noAnonFunctionType ||\n !(\n this.match(tt.comma) ||\n (this.match(tt.parenR) && this.lookahead().type === tt.arrow)\n )\n ) {\n this.expect(tt.parenR);\n return type;\n } else {\n // Eat a comma if there is one\n this.eat(tt.comma);\n }\n }\n\n if (type) {\n tmp = this.flowParseFunctionTypeParams([\n this.reinterpretTypeAsFunctionTypeParam(type),\n ]);\n } else {\n tmp = this.flowParseFunctionTypeParams();\n }\n\n node.params = tmp.params;\n node.rest = tmp.rest;\n node.this = tmp._this;\n\n this.expect(tt.parenR);\n\n this.expect(tt.arrow);\n\n node.returnType = this.flowParseType();\n\n node.typeParameters = null;\n\n return this.finishNode(node, \"FunctionTypeAnnotation\");\n }\n\n case tt.string:\n return this.parseLiteral(\n this.state.value,\n \"StringLiteralTypeAnnotation\",\n );\n\n case tt._true:\n case tt._false:\n node.value = this.match(tt._true);\n this.next();\n return this.finishNode(\n node as Undone,\n \"BooleanLiteralTypeAnnotation\",\n );\n\n case tt.plusMin:\n if (this.state.value === \"-\") {\n this.next();\n if (this.match(tt.num)) {\n return this.parseLiteralAtNode(\n -this.state.value,\n \"NumberLiteralTypeAnnotation\",\n node,\n );\n }\n\n if (this.match(tt.bigint)) {\n return this.parseLiteralAtNode(\n -this.state.value,\n \"BigIntLiteralTypeAnnotation\",\n node,\n );\n }\n\n throw this.raise(\n FlowErrors.UnexpectedSubtractionOperand,\n this.state.startLoc,\n );\n }\n throw this.unexpected();\n case tt.num:\n return this.parseLiteral(\n this.state.value,\n \"NumberLiteralTypeAnnotation\",\n );\n\n case tt.bigint:\n return this.parseLiteral(\n this.state.value,\n \"BigIntLiteralTypeAnnotation\",\n );\n\n case tt._void:\n this.next();\n return this.finishNode(node, \"VoidTypeAnnotation\");\n\n case tt._null:\n this.next();\n return this.finishNode(node, \"NullLiteralTypeAnnotation\");\n\n case tt._this:\n this.next();\n return this.finishNode(node, \"ThisTypeAnnotation\");\n\n case tt.star:\n this.next();\n return this.finishNode(node, \"ExistsTypeAnnotation\");\n\n case tt._typeof:\n return this.flowParseTypeofType();\n\n default:\n if (tokenIsKeyword(this.state.type)) {\n const label = tokenLabelName(this.state.type);\n this.next();\n return super.createIdentifier(node as Undone, label);\n } else if (tokenIsIdentifier(this.state.type)) {\n if (this.isContextual(tt._interface)) {\n return this.flowParseInterfaceType();\n }\n\n return this.flowIdentToTypeAnnotation(\n startLoc,\n node,\n this.parseIdentifier(),\n );\n }\n }\n\n throw this.unexpected();\n }\n\n flowParsePostfixType(): N.FlowType {\n const startLoc = this.state.startLoc;\n let type = this.flowParsePrimaryType();\n let seenOptionalIndexedAccess = false;\n while (\n (this.match(tt.bracketL) || this.match(tt.questionDot)) &&\n !this.canInsertSemicolon()\n ) {\n const node = this.startNodeAt(startLoc);\n const optional = this.eat(tt.questionDot);\n seenOptionalIndexedAccess = seenOptionalIndexedAccess || optional;\n this.expect(tt.bracketL);\n if (!optional && this.match(tt.bracketR)) {\n node.elementType = type;\n this.next(); // eat `]`\n type = this.finishNode(node, \"ArrayTypeAnnotation\");\n } else {\n node.objectType = type;\n node.indexType = this.flowParseType();\n this.expect(tt.bracketR);\n if (seenOptionalIndexedAccess) {\n node.optional = optional;\n type = this.finishNode(\n // @ts-expect-error todo(flow->ts)\n node,\n \"OptionalIndexedAccessType\",\n );\n } else {\n type = this.finishNode(\n // @ts-expect-error todo(flow->ts)\n node,\n \"IndexedAccessType\",\n );\n }\n }\n }\n return type;\n }\n\n flowParsePrefixType(): N.FlowType {\n const node = this.startNode();\n if (this.eat(tt.question)) {\n node.typeAnnotation = this.flowParsePrefixType();\n return this.finishNode(node, \"NullableTypeAnnotation\");\n } else {\n return this.flowParsePostfixType();\n }\n }\n\n flowParseAnonFunctionWithoutParens(): N.FlowType {\n const param = this.flowParsePrefixType();\n if (!this.state.noAnonFunctionType && this.eat(tt.arrow)) {\n // TODO: This should be a type error. Passing in a SourceLocation, and it expects a Position.\n const node = this.startNodeAt(\n param.loc.start,\n );\n node.params = [this.reinterpretTypeAsFunctionTypeParam(param)];\n node.rest = null;\n node.this = null;\n node.returnType = this.flowParseType();\n node.typeParameters = null;\n return this.finishNode(node, \"FunctionTypeAnnotation\");\n }\n return param;\n }\n\n flowParseIntersectionType(): N.FlowType {\n const node = this.startNode();\n this.eat(tt.bitwiseAND);\n const type = this.flowParseAnonFunctionWithoutParens();\n node.types = [type];\n while (this.eat(tt.bitwiseAND)) {\n node.types.push(this.flowParseAnonFunctionWithoutParens());\n }\n return node.types.length === 1\n ? type\n : this.finishNode(node, \"IntersectionTypeAnnotation\");\n }\n\n flowParseUnionType(): N.FlowType {\n const node = this.startNode();\n this.eat(tt.bitwiseOR);\n const type = this.flowParseIntersectionType();\n node.types = [type];\n while (this.eat(tt.bitwiseOR)) {\n node.types.push(this.flowParseIntersectionType());\n }\n return node.types.length === 1\n ? type\n : this.finishNode(node, \"UnionTypeAnnotation\");\n }\n\n flowParseType(): N.FlowType {\n const oldInType = this.state.inType;\n this.state.inType = true;\n const type = this.flowParseUnionType();\n this.state.inType = oldInType;\n return type;\n }\n\n flowParseTypeOrImplicitInstantiation(): N.FlowType {\n if (this.state.type === tt.name && this.state.value === \"_\") {\n const startLoc = this.state.startLoc;\n const node = this.parseIdentifier();\n return this.flowParseGenericType(startLoc, node);\n } else {\n return this.flowParseType();\n }\n }\n\n flowParseTypeAnnotation(): N.TypeAnnotation {\n const node = this.startNode();\n node.typeAnnotation = this.flowParseTypeInitialiser();\n return this.finishNode(node, \"TypeAnnotation\");\n }\n\n flowParseTypeAnnotatableIdentifier(\n allowPrimitiveOverride?: boolean,\n ): N.Identifier {\n const ident = allowPrimitiveOverride\n ? this.parseIdentifier()\n : this.flowParseRestrictedIdentifier();\n if (this.match(tt.colon)) {\n ident.typeAnnotation = this.flowParseTypeAnnotation();\n this.resetEndLocation(ident);\n }\n return ident;\n }\n\n typeCastToParameter(node: N.TypeCastExpression): N.Expression {\n (node.expression as N.Identifier).typeAnnotation = node.typeAnnotation;\n\n this.resetEndLocation(node.expression, node.typeAnnotation.loc.end);\n\n return node.expression;\n }\n\n flowParseVariance(): N.FlowVariance | undefined | null {\n let variance = null;\n if (this.match(tt.plusMin)) {\n variance = this.startNode();\n if (this.state.value === \"+\") {\n variance.kind = \"plus\";\n } else {\n variance.kind = \"minus\";\n }\n this.next();\n return this.finishNode(variance, \"Variance\");\n }\n return variance;\n }\n\n // ==================================\n // Overrides\n // ==================================\n\n parseFunctionBody(\n node: N.Function,\n allowExpressionBody?: boolean | null,\n isMethod: boolean = false,\n ): void {\n if (allowExpressionBody) {\n this.forwardNoArrowParamsConversionAt(node, () =>\n super.parseFunctionBody(node, true, isMethod),\n );\n return;\n }\n\n super.parseFunctionBody(node, false, isMethod);\n }\n\n parseFunctionBodyAndFinish<\n T extends\n | N.Function\n | N.TSDeclareMethod\n | N.TSDeclareFunction\n | N.ClassPrivateMethod,\n >(node: Undone, type: T[\"type\"], isMethod: boolean = false): T {\n if (this.match(tt.colon)) {\n const typeNode = this.startNode();\n\n [\n typeNode.typeAnnotation,\n // @ts-expect-error predicate may not exist\n node.predicate,\n ] = this.flowParseTypeAndPredicateInitialiser() as [\n N.FlowType,\n N.FlowPredicate,\n ];\n\n node.returnType = typeNode.typeAnnotation\n ? this.finishNode(typeNode, \"TypeAnnotation\")\n : null;\n }\n\n return super.parseFunctionBodyAndFinish(node, type, isMethod);\n }\n\n // interfaces and enums\n parseStatementLike(flags: ParseStatementFlag): N.Statement {\n // strict mode handling of `interface` since it's a reserved word\n if (this.state.strict && this.isContextual(tt._interface)) {\n const lookahead = this.lookahead();\n if (tokenIsKeywordOrIdentifier(lookahead.type)) {\n const node = this.startNode();\n this.next();\n return this.flowParseInterface(node);\n }\n } else if (this.isContextual(tt._enum)) {\n const node = this.startNode();\n this.next();\n return this.flowParseEnumDeclaration(node);\n }\n const stmt = super.parseStatementLike(flags);\n // We will parse a flow pragma in any comment before the first statement.\n if (this.flowPragma === undefined && !this.isValidDirective(stmt)) {\n this.flowPragma = null;\n }\n return stmt;\n }\n\n // declares, interfaces and type aliases\n parseExpressionStatement(\n node: N.ExpressionStatement,\n expr: N.Expression,\n decorators: N.Decorator[] | null,\n ): N.ExpressionStatement {\n if (expr.type === \"Identifier\") {\n if (expr.name === \"declare\") {\n if (\n this.match(tt._class) ||\n tokenIsIdentifier(this.state.type) ||\n this.match(tt._function) ||\n this.match(tt._var) ||\n this.match(tt._export)\n ) {\n // @ts-expect-error: refine typings\n return this.flowParseDeclare(node);\n }\n } else if (tokenIsIdentifier(this.state.type)) {\n if (expr.name === \"interface\") {\n // @ts-expect-error: refine typings\n return this.flowParseInterface(node);\n } else if (expr.name === \"type\") {\n // @ts-expect-error: refine typings\n return this.flowParseTypeAlias(node);\n } else if (expr.name === \"opaque\") {\n // @ts-expect-error: refine typings\n return this.flowParseOpaqueType(node, false);\n }\n }\n }\n\n return super.parseExpressionStatement(node, expr, decorators);\n }\n\n // export type\n shouldParseExportDeclaration(): boolean {\n const { type } = this.state;\n if (type === tt._enum || tokenIsFlowInterfaceOrTypeOrOpaque(type)) {\n return !this.state.containsEsc;\n }\n return super.shouldParseExportDeclaration();\n }\n\n isExportDefaultSpecifier(): boolean {\n const { type } = this.state;\n if (type === tt._enum || tokenIsFlowInterfaceOrTypeOrOpaque(type)) {\n return this.state.containsEsc;\n }\n\n return super.isExportDefaultSpecifier();\n }\n\n parseExportDefaultExpression() {\n if (this.isContextual(tt._enum)) {\n const node = this.startNode();\n this.next();\n return this.flowParseEnumDeclaration(node);\n }\n return super.parseExportDefaultExpression();\n }\n\n parseConditional(\n expr: N.Expression,\n\n startLoc: Position,\n refExpressionErrors?: ExpressionErrors | null,\n ): N.Expression {\n if (!this.match(tt.question)) return expr;\n\n if (this.state.maybeInArrowParameters) {\n const nextCh = this.lookaheadCharCode();\n // These tokens cannot start an expression, so if one of them follows\n // ? then we are probably in an arrow function parameters list and we\n // don't parse the conditional expression.\n if (\n nextCh === charCodes.comma || // (a?, b) => c\n nextCh === charCodes.equalsTo || // (a? = b) => c\n nextCh === charCodes.colon || // (a?: b) => c\n nextCh === charCodes.rightParenthesis // (a?) => c\n ) {\n /*:: invariant(refExpressionErrors != null) */\n this.setOptionalParametersError(refExpressionErrors!);\n return expr;\n }\n }\n\n this.expect(tt.question);\n const state = this.state.clone();\n const originalNoArrowAt = this.state.noArrowAt;\n const node = this.startNodeAt(startLoc);\n let { consequent, failed } = this.tryParseConditionalConsequent();\n let [valid, invalid] = this.getArrowLikeExpressions(consequent);\n\n if (failed || invalid.length > 0) {\n const noArrowAt = [...originalNoArrowAt];\n\n if (invalid.length > 0) {\n this.state = state;\n this.state.noArrowAt = noArrowAt;\n\n for (let i = 0; i < invalid.length; i++) {\n noArrowAt.push(invalid[i].start);\n }\n\n ({ consequent, failed } = this.tryParseConditionalConsequent());\n [valid, invalid] = this.getArrowLikeExpressions(consequent);\n }\n\n if (failed && valid.length > 1) {\n // if there are two or more possible correct ways of parsing, throw an\n // error.\n // e.g. Source: a ? (b): c => (d): e => f\n // Result 1: a ? b : (c => ((d): e => f))\n // Result 2: a ? ((b): c => d) : (e => f)\n this.raise(FlowErrors.AmbiguousConditionalArrow, state.startLoc);\n }\n\n if (failed && valid.length === 1) {\n this.state = state;\n noArrowAt.push(valid[0].start);\n this.state.noArrowAt = noArrowAt;\n ({ consequent, failed } = this.tryParseConditionalConsequent());\n }\n }\n\n this.getArrowLikeExpressions(consequent, true);\n\n this.state.noArrowAt = originalNoArrowAt;\n this.expect(tt.colon);\n\n node.test = expr;\n node.consequent = consequent;\n node.alternate = this.forwardNoArrowParamsConversionAt(node, () =>\n this.parseMaybeAssign(undefined, undefined),\n );\n\n return this.finishNode(node, \"ConditionalExpression\");\n }\n\n tryParseConditionalConsequent(): {\n consequent: N.Expression;\n failed: boolean;\n } {\n this.state.noArrowParamsConversionAt.push(this.state.start);\n\n const consequent = this.parseMaybeAssignAllowIn();\n const failed = !this.match(tt.colon);\n\n this.state.noArrowParamsConversionAt.pop();\n\n return { consequent, failed };\n }\n\n // Given an expression, walks through out its arrow functions whose body is\n // an expression and through out conditional expressions. It returns every\n // function which has been parsed with a return type but could have been\n // parenthesized expressions.\n // These functions are separated into two arrays: one containing the ones\n // whose parameters can be converted to assignable lists, one containing the\n // others.\n getArrowLikeExpressions(\n node: N.Expression,\n disallowInvalid?: boolean,\n ): [N.ArrowFunctionExpression[], N.ArrowFunctionExpression[]] {\n const stack = [node];\n const arrows: N.ArrowFunctionExpression[] = [];\n\n while (stack.length !== 0) {\n const node = stack.pop()!;\n if (\n node.type === \"ArrowFunctionExpression\" &&\n node.body.type !== \"BlockStatement\"\n ) {\n if (node.typeParameters || !node.returnType) {\n // This is an arrow expression without ambiguity, so check its parameters\n this.finishArrowValidation(node);\n } else {\n arrows.push(node);\n }\n stack.push(node.body);\n } else if (node.type === \"ConditionalExpression\") {\n stack.push(node.consequent);\n stack.push(node.alternate);\n }\n }\n\n if (disallowInvalid) {\n arrows.forEach(node => this.finishArrowValidation(node));\n return [arrows, []];\n }\n\n return partition(arrows, node =>\n node.params.every(param => this.isAssignable(param, true)),\n );\n }\n\n finishArrowValidation(node: N.ArrowFunctionExpression) {\n this.toAssignableList(\n // node.params is Expression[] instead of $ReadOnlyArray because it\n // has not been converted yet.\n node.params as any as N.Expression[],\n node.extra?.trailingCommaLoc,\n /* isLHS */ false,\n );\n // Enter scope, as checkParams defines bindings\n this.scope.enter(ScopeFlag.FUNCTION | ScopeFlag.ARROW);\n // Use super's method to force the parameters to be checked\n super.checkParams(node, false, true);\n this.scope.exit();\n }\n\n forwardNoArrowParamsConversionAt(\n node: Undone,\n parse: () => T,\n ): T {\n let result: T;\n if (\n this.state.noArrowParamsConversionAt.includes(\n this.offsetToSourcePos(node.start),\n )\n ) {\n this.state.noArrowParamsConversionAt.push(this.state.start);\n result = parse();\n this.state.noArrowParamsConversionAt.pop();\n } else {\n result = parse();\n }\n\n return result;\n }\n\n parseParenItem(\n node: T,\n startLoc: Position,\n ): T | N.TypeCastExpression | N.TsTypeCastExpression {\n const newNode = super.parseParenItem(node, startLoc);\n if (this.eat(tt.question)) {\n (newNode as N.Identifier).optional = true;\n // Include questionmark in location of node\n // Don't use this.finishNode() as otherwise we might process comments twice and\n // include already consumed parens\n this.resetEndLocation(node);\n }\n\n if (this.match(tt.colon)) {\n const typeCastNode = this.startNodeAt(startLoc);\n typeCastNode.expression = newNode as N.Expression;\n typeCastNode.typeAnnotation = this.flowParseTypeAnnotation();\n\n return this.finishNode(typeCastNode, \"TypeCastExpression\");\n }\n\n return newNode;\n }\n\n assertModuleNodeAllowed(node: N.Node) {\n if (\n (node.type === \"ImportDeclaration\" &&\n (node.importKind === \"type\" || node.importKind === \"typeof\")) ||\n (node.type === \"ExportNamedDeclaration\" &&\n node.exportKind === \"type\") ||\n (node.type === \"ExportAllDeclaration\" && node.exportKind === \"type\")\n ) {\n // Allow Flowtype imports and exports in all conditions because\n // Flow itself does not care about 'sourceType'.\n return;\n }\n\n super.assertModuleNodeAllowed(node);\n }\n\n parseExportDeclaration(\n node: N.ExportNamedDeclaration,\n ): N.Declaration | undefined | null {\n if (this.isContextual(tt._type)) {\n node.exportKind = \"type\";\n\n const declarationNode = this.startNode();\n this.next();\n\n if (this.match(tt.braceL)) {\n // export type { foo, bar };\n node.specifiers = this.parseExportSpecifiers(\n /* isInTypeExport */ true,\n );\n super.parseExportFrom(node);\n return null;\n } else {\n // export type Foo = Bar;\n // @ts-expect-error: refine typings\n return this.flowParseTypeAlias(declarationNode);\n }\n } else if (this.isContextual(tt._opaque)) {\n node.exportKind = \"type\";\n\n const declarationNode = this.startNode();\n this.next();\n // export opaque type Foo = Bar;\n // @ts-expect-error: refine typings\n return this.flowParseOpaqueType(declarationNode, false);\n } else if (this.isContextual(tt._interface)) {\n node.exportKind = \"type\";\n const declarationNode = this.startNode();\n this.next();\n // @ts-expect-error: refine typings\n return this.flowParseInterface(declarationNode);\n } else if (this.isContextual(tt._enum)) {\n node.exportKind = \"value\";\n const declarationNode = this.startNode();\n this.next();\n // @ts-expect-error: refine typings\n return this.flowParseEnumDeclaration(declarationNode);\n } else {\n return super.parseExportDeclaration(node);\n }\n }\n\n eatExportStar(\n node: Undone,\n ): node is Undone {\n if (super.eatExportStar(node)) return true;\n\n if (this.isContextual(tt._type) && this.lookahead().type === tt.star) {\n (\n node as Undone\n ).exportKind = \"type\";\n this.next();\n this.next();\n return true;\n }\n\n return false;\n }\n\n maybeParseExportNamespaceSpecifier(\n node: Undone,\n ): node is Undone {\n const { startLoc } = this.state;\n const hasNamespace = super.maybeParseExportNamespaceSpecifier(node);\n if (hasNamespace && node.exportKind === \"type\") {\n this.unexpected(startLoc);\n }\n return hasNamespace;\n }\n\n parseClassId(\n node: N.Class,\n isStatement: boolean,\n optionalId?: boolean | null,\n ) {\n super.parseClassId(node, isStatement, optionalId);\n if (this.match(tt.lt)) {\n node.typeParameters = this.flowParseTypeParameterDeclaration();\n }\n }\n\n parseClassMember(\n classBody: N.ClassBody,\n member: any,\n state: N.ParseClassMemberState,\n ): void {\n const { startLoc } = this.state;\n if (this.isContextual(tt._declare)) {\n if (super.parseClassMemberFromModifier(classBody, member)) {\n // 'declare' is a class element name\n return;\n }\n\n member.declare = true;\n }\n\n super.parseClassMember(classBody, member, state);\n\n if (member.declare) {\n if (\n member.type !== \"ClassProperty\" &&\n member.type !== \"ClassPrivateProperty\" &&\n member.type !== \"PropertyDefinition\" // Used by estree plugin\n ) {\n this.raise(FlowErrors.DeclareClassElement, startLoc);\n } else if (member.value) {\n this.raise(FlowErrors.DeclareClassFieldInitializer, member.value);\n }\n }\n }\n\n isIterator(word: string): boolean {\n return word === \"iterator\" || word === \"asyncIterator\";\n }\n\n readIterator(): void {\n const word = super.readWord1();\n const fullWord = \"@@\" + word;\n\n // Allow @@iterator and @@asyncIterator as a identifier only inside type\n if (!this.isIterator(word) || !this.state.inType) {\n this.raise(Errors.InvalidIdentifier, this.state.curPosition(), {\n identifierName: fullWord,\n });\n }\n\n this.finishToken(tt.name, fullWord);\n }\n\n // ensure that inside flow types, we bypass the jsx parser plugin\n getTokenFromCode(code: number): void {\n const next = this.input.charCodeAt(this.state.pos + 1);\n if (code === charCodes.leftCurlyBrace && next === charCodes.verticalBar) {\n this.finishOp(tt.braceBarL, 2);\n } else if (\n this.state.inType &&\n (code === charCodes.greaterThan || code === charCodes.lessThan)\n ) {\n this.finishOp(code === charCodes.greaterThan ? tt.gt : tt.lt, 1);\n } else if (this.state.inType && code === charCodes.questionMark) {\n if (next === charCodes.dot) {\n this.finishOp(tt.questionDot, 2);\n } else {\n // allow double nullable types in Flow: ??string\n this.finishOp(tt.question, 1);\n }\n } else if (\n isIteratorStart(code, next, this.input.charCodeAt(this.state.pos + 2))\n ) {\n this.state.pos += 2; // eat \"@@\"\n this.readIterator();\n } else {\n super.getTokenFromCode(code);\n }\n }\n\n isAssignable(node: N.Node, isBinding?: boolean): boolean {\n if (node.type === \"TypeCastExpression\") {\n return this.isAssignable(node.expression, isBinding);\n } else {\n return super.isAssignable(node, isBinding);\n }\n }\n\n toAssignable(node: N.Node, isLHS: boolean = false): void {\n if (\n !isLHS &&\n node.type === \"AssignmentExpression\" &&\n node.left.type === \"TypeCastExpression\"\n ) {\n node.left = this.typeCastToParameter(node.left) as N.Assignable;\n }\n super.toAssignable(node, isLHS);\n }\n\n // turn type casts that we found in function parameter head into type annotated params\n toAssignableList(\n exprList: N.Expression[],\n trailingCommaLoc: Position | undefined | null,\n isLHS: boolean,\n ): void {\n for (let i = 0; i < exprList.length; i++) {\n const expr = exprList[i];\n if (expr?.type === \"TypeCastExpression\") {\n exprList[i] = this.typeCastToParameter(expr);\n }\n }\n super.toAssignableList(exprList, trailingCommaLoc, isLHS);\n }\n\n // this is a list of nodes, from something like a call expression, we need to filter the\n // type casts that we've found that are illegal in this context\n toReferencedList(\n exprList:\n | readonly (N.Expression | N.SpreadElement | null)[]\n | readonly (N.Expression | N.RestElement)[],\n isParenthesizedExpr?: boolean,\n ):\n | readonly (N.Expression | N.SpreadElement | null)[]\n | readonly (N.Expression | N.RestElement)[] {\n for (let i = 0; i < exprList.length; i++) {\n const expr = exprList[i];\n if (\n expr &&\n expr.type === \"TypeCastExpression\" &&\n !expr.extra?.parenthesized &&\n (exprList.length > 1 || !isParenthesizedExpr)\n ) {\n this.raise(FlowErrors.TypeCastInPattern, expr.typeAnnotation);\n }\n }\n\n return exprList;\n }\n\n parseArrayLike(\n close: TokenType,\n isTuple: boolean,\n refExpressionErrors?: ExpressionErrors | null,\n ): N.ArrayExpression | N.TupleExpression {\n const node = super.parseArrayLike(close, isTuple, refExpressionErrors);\n\n // This could be an array pattern:\n // ([a: string, b: string]) => {}\n // In this case, we don't have to call toReferencedList. We will\n // call it, if needed, when we are sure that it is a parenthesized\n // expression by calling toReferencedListDeep.\n if (refExpressionErrors != null && !this.state.maybeInArrowParameters) {\n this.toReferencedList(node.elements);\n }\n\n return node;\n }\n\n isValidLVal(\n type: string,\n disallowCallExpression: boolean,\n isParenthesized: boolean,\n binding: BindingFlag,\n ) {\n return (\n type === \"TypeCastExpression\" ||\n super.isValidLVal(\n type,\n disallowCallExpression,\n isParenthesized,\n binding,\n )\n );\n }\n\n // parse class property type annotations\n parseClassProperty(node: N.ClassProperty): N.ClassProperty {\n if (this.match(tt.colon)) {\n node.typeAnnotation = this.flowParseTypeAnnotation();\n }\n return super.parseClassProperty(node);\n }\n\n parseClassPrivateProperty(\n node: N.ClassPrivateProperty,\n ): N.ClassPrivateProperty {\n if (this.match(tt.colon)) {\n node.typeAnnotation = this.flowParseTypeAnnotation();\n }\n return super.parseClassPrivateProperty(node);\n }\n\n // determine whether or not we're currently in the position where a class method would appear\n isClassMethod(): boolean {\n return this.match(tt.lt) || super.isClassMethod();\n }\n\n // determine whether or not we're currently in the position where a class property would appear\n isClassProperty(): boolean {\n return this.match(tt.colon) || super.isClassProperty();\n }\n\n isNonstaticConstructor(method: N.ClassMethod | N.ClassProperty): boolean {\n return !this.match(tt.colon) && super.isNonstaticConstructor(method);\n }\n\n // parse type parameters for class methods\n pushClassMethod(\n classBody: N.ClassBody,\n method: N.ClassMethod,\n isGenerator: boolean,\n isAsync: boolean,\n isConstructor: boolean,\n allowsDirectSuper: boolean,\n ): void {\n if ((method as any).variance) {\n this.unexpected((method as any).variance.loc.start);\n }\n delete (method as any).variance;\n if (this.match(tt.lt)) {\n method.typeParameters = this.flowParseTypeParameterDeclaration();\n }\n\n super.pushClassMethod(\n classBody,\n method,\n isGenerator,\n isAsync,\n isConstructor,\n allowsDirectSuper,\n );\n\n if (method.params && isConstructor) {\n const params = method.params;\n if (params.length > 0 && this.isThisParam(params[0])) {\n this.raise(FlowErrors.ThisParamBannedInConstructor, method);\n }\n // estree support\n } else if (\n // @ts-expect-error TS does not know about the fact that estree can replace ClassMethod with MethodDefinition\n method.type === \"MethodDefinition\" &&\n isConstructor &&\n // @ts-expect-error estree\n method.value.params\n ) {\n // @ts-expect-error estree\n const params = method.value.params;\n if (params.length > 0 && this.isThisParam(params[0])) {\n this.raise(FlowErrors.ThisParamBannedInConstructor, method);\n }\n }\n }\n\n pushClassPrivateMethod(\n classBody: N.ClassBody,\n method: N.ClassPrivateMethod,\n isGenerator: boolean,\n isAsync: boolean,\n ): void {\n if ((method as any).variance) {\n this.unexpected((method as any).variance.loc.start);\n }\n delete (method as any).variance;\n if (this.match(tt.lt)) {\n method.typeParameters = this.flowParseTypeParameterDeclaration();\n }\n\n super.pushClassPrivateMethod(classBody, method, isGenerator, isAsync);\n }\n\n // parse a the super class type parameters and implements\n parseClassSuper(node: N.Class): void {\n super.parseClassSuper(node);\n if (\n node.superClass &&\n (this.match(tt.lt) ||\n // handles `class extends C<`\n this.match(tt.bitShiftL))\n ) {\n if (process.env.BABEL_8_BREAKING) {\n node.superTypeArguments =\n this.flowParseTypeParameterInstantiationInExpression();\n } else {\n node.superTypeParameters =\n this.flowParseTypeParameterInstantiationInExpression();\n }\n }\n if (this.isContextual(tt._implements)) {\n this.next();\n const implemented: N.FlowClassImplements[] = (node.implements = []);\n do {\n const node = this.startNode();\n node.id = this.flowParseRestrictedIdentifier(/*liberal*/ true);\n if (this.match(tt.lt)) {\n node.typeParameters = this.flowParseTypeParameterInstantiation();\n } else {\n node.typeParameters = null;\n }\n implemented.push(this.finishNode(node, \"ClassImplements\"));\n } while (this.eat(tt.comma));\n }\n }\n\n checkGetterSetterParams(method: N.ObjectMethod | N.ClassMethod): void {\n super.checkGetterSetterParams(method);\n const params = this.getObjectOrClassMethodParams(method);\n if (params.length > 0) {\n const param = params[0];\n if (this.isThisParam(param) && method.kind === \"get\") {\n this.raise(FlowErrors.GetterMayNotHaveThisParam, param);\n } else if (this.isThisParam(param)) {\n this.raise(FlowErrors.SetterMayNotHaveThisParam, param);\n }\n }\n }\n\n parsePropertyNamePrefixOperator(\n node: N.ObjectOrClassMember | N.ClassMember,\n ): void {\n node.variance = this.flowParseVariance();\n }\n\n // parse type parameters for object method shorthand\n parseObjPropValue(\n prop: Undone,\n startLoc: Position | undefined | null,\n isGenerator: boolean,\n isAsync: boolean,\n isPattern: boolean,\n isAccessor: boolean,\n refExpressionErrors?: ExpressionErrors | null,\n ): T {\n if ((prop as any).variance) {\n this.unexpected((prop as any).variance.loc.start);\n }\n delete (prop as any).variance;\n\n let typeParameters;\n\n // method shorthand\n if (this.match(tt.lt) && !isAccessor) {\n typeParameters = this.flowParseTypeParameterDeclaration();\n if (!this.match(tt.parenL)) this.unexpected();\n }\n\n const result = super.parseObjPropValue(\n prop,\n startLoc,\n isGenerator,\n isAsync,\n isPattern,\n isAccessor,\n refExpressionErrors,\n );\n\n // add typeParameters if we found them\n if (typeParameters) {\n // @ts-expect-error: refine typings\n (result.value || result).typeParameters = typeParameters;\n }\n return result;\n }\n\n parseFunctionParamType(param: N.Pattern): N.Pattern {\n if (this.eat(tt.question)) {\n if (param.type !== \"Identifier\") {\n this.raise(FlowErrors.PatternIsOptional, param);\n }\n if (this.isThisParam(param)) {\n this.raise(FlowErrors.ThisParamMayNotBeOptional, param);\n }\n\n (param as any as N.Identifier).optional = true;\n }\n if (this.match(tt.colon)) {\n param.typeAnnotation = this.flowParseTypeAnnotation();\n } else if (this.isThisParam(param)) {\n this.raise(FlowErrors.ThisParamAnnotationRequired, param);\n }\n\n if (this.match(tt.eq) && this.isThisParam(param)) {\n this.raise(FlowErrors.ThisParamNoDefault, param);\n }\n\n this.resetEndLocation(param);\n return param;\n }\n\n parseMaybeDefault

(\n startLoc?: Position | null,\n left?: P | null,\n ): P | N.AssignmentPattern {\n const node = super.parseMaybeDefault(startLoc, left);\n\n if (\n node.type === \"AssignmentPattern\" &&\n node.typeAnnotation &&\n node.right.start < node.typeAnnotation.start\n ) {\n this.raise(FlowErrors.TypeBeforeInitializer, node.typeAnnotation);\n }\n\n return node;\n }\n\n checkImportReflection(node: Undone) {\n super.checkImportReflection(node);\n if (node.module && node.importKind !== \"value\") {\n this.raise(\n FlowErrors.ImportReflectionHasImportType,\n node.specifiers[0].loc.start,\n );\n }\n }\n\n parseImportSpecifierLocal<\n T extends\n | N.ImportSpecifier\n | N.ImportDefaultSpecifier\n | N.ImportNamespaceSpecifier,\n >(node: N.ImportDeclaration, specifier: Undone, type: T[\"type\"]): void {\n specifier.local = hasTypeImportKind(node)\n ? this.flowParseRestrictedIdentifier(\n /* liberal */ true,\n /* declaration */ true,\n )\n : this.parseIdentifier();\n\n node.specifiers.push(this.finishImportSpecifier(specifier, type));\n }\n\n isPotentialImportPhase(isExport: boolean): boolean {\n if (super.isPotentialImportPhase(isExport)) return true;\n if (this.isContextual(tt._type)) {\n if (!isExport) return true;\n const ch = this.lookaheadCharCode();\n return ch === charCodes.leftCurlyBrace || ch === charCodes.asterisk;\n }\n return !isExport && this.isContextual(tt._typeof);\n }\n\n applyImportPhase(\n node: Undone,\n isExport: boolean,\n phase: string | null,\n loc?: Position,\n ): void {\n super.applyImportPhase(node, isExport, phase, loc);\n if (isExport) {\n if (!phase && this.match(tt._default)) {\n // TODO: Align with our TS AST and always add .exportKind\n return;\n }\n (node as N.ExportNamedDeclaration).exportKind =\n phase === \"type\" ? phase : \"value\";\n } else {\n if (phase === \"type\" && this.match(tt.star)) this.unexpected();\n (node as N.ImportDeclaration).importKind =\n phase === \"type\" || phase === \"typeof\" ? phase : \"value\";\n }\n }\n\n // parse import-type/typeof shorthand\n parseImportSpecifier(\n specifier: any,\n importedIsString: boolean,\n isInTypeOnlyImport: boolean,\n // eslint-disable-next-line @typescript-eslint/no-unused-vars\n isMaybeTypeOnly: boolean,\n // eslint-disable-next-line @typescript-eslint/no-unused-vars\n bindingType: BindingFlag | undefined,\n ): N.ImportSpecifier {\n const firstIdent = specifier.imported;\n\n let specifierTypeKind = null;\n if (firstIdent.type === \"Identifier\") {\n if (firstIdent.name === \"type\") {\n specifierTypeKind = \"type\";\n } else if (firstIdent.name === \"typeof\") {\n specifierTypeKind = \"typeof\";\n }\n }\n\n let isBinding = false;\n if (this.isContextual(tt._as) && !this.isLookaheadContextual(\"as\")) {\n const as_ident = this.parseIdentifier(true);\n if (\n specifierTypeKind !== null &&\n !tokenIsKeywordOrIdentifier(this.state.type)\n ) {\n // `import {type as ,` or `import {type as }`\n specifier.imported = as_ident;\n specifier.importKind = specifierTypeKind;\n specifier.local = this.cloneIdentifier(as_ident);\n } else {\n // `import {type as foo`\n specifier.imported = firstIdent;\n specifier.importKind = null;\n specifier.local = this.parseIdentifier();\n }\n } else {\n if (\n specifierTypeKind !== null &&\n tokenIsKeywordOrIdentifier(this.state.type)\n ) {\n // `import {type foo`\n specifier.imported = this.parseIdentifier(true);\n specifier.importKind = specifierTypeKind;\n } else {\n if (importedIsString) {\n /*:: invariant(firstIdent instanceof N.StringLiteral) */\n throw this.raise(Errors.ImportBindingIsString, specifier, {\n importName: firstIdent.value,\n });\n }\n /*:: invariant(firstIdent instanceof N.Node) */\n specifier.imported = firstIdent;\n specifier.importKind = null;\n }\n\n if (this.eatContextual(tt._as)) {\n specifier.local = this.parseIdentifier();\n } else {\n isBinding = true;\n specifier.local = this.cloneIdentifier(specifier.imported);\n }\n }\n\n const specifierIsTypeImport = hasTypeImportKind(specifier);\n\n if (isInTypeOnlyImport && specifierIsTypeImport) {\n this.raise(FlowErrors.ImportTypeShorthandOnlyInPureImport, specifier);\n }\n\n if (isInTypeOnlyImport || specifierIsTypeImport) {\n this.checkReservedType(\n specifier.local.name,\n specifier.local.loc.start,\n /* declaration */ true,\n );\n }\n\n if (isBinding && !isInTypeOnlyImport && !specifierIsTypeImport) {\n this.checkReservedWord(\n specifier.local.name,\n specifier.loc.start,\n true,\n true,\n );\n }\n\n return this.finishImportSpecifier(specifier, \"ImportSpecifier\");\n }\n\n parseBindingAtom(): N.Pattern {\n switch (this.state.type) {\n case tt._this:\n // \"this\" may be the name of a parameter, so allow it.\n return this.parseIdentifier(/* liberal */ true);\n default:\n return super.parseBindingAtom();\n }\n }\n\n // parse function type parameters - function foo() {}\n parseFunctionParams(\n node: Undone,\n isConstructor: boolean,\n ): void {\n // @ts-expect-error kind may not index node\n const kind = node.kind;\n if (kind !== \"get\" && kind !== \"set\" && this.match(tt.lt)) {\n node.typeParameters = this.flowParseTypeParameterDeclaration();\n }\n super.parseFunctionParams(node, isConstructor);\n }\n\n // parse flow type annotations on variable declarator heads - let foo: string = bar\n parseVarId(\n decl: N.VariableDeclarator,\n kind: \"var\" | \"let\" | \"const\" | \"using\" | \"await using\",\n ): void {\n super.parseVarId(decl, kind);\n if (this.match(tt.colon)) {\n decl.id.typeAnnotation = this.flowParseTypeAnnotation();\n this.resetEndLocation(decl.id); // set end position to end of type\n }\n }\n\n // parse the return type of an async arrow function - let foo = (async (): number => {});\n parseAsyncArrowFromCallExpression(\n node: N.ArrowFunctionExpression,\n call: N.CallExpression,\n ): N.ArrowFunctionExpression {\n if (this.match(tt.colon)) {\n const oldNoAnonFunctionType = this.state.noAnonFunctionType;\n this.state.noAnonFunctionType = true;\n node.returnType = this.flowParseTypeAnnotation();\n this.state.noAnonFunctionType = oldNoAnonFunctionType;\n }\n\n return super.parseAsyncArrowFromCallExpression(node, call);\n }\n\n // todo description\n shouldParseAsyncArrow(): boolean {\n return this.match(tt.colon) || super.shouldParseAsyncArrow();\n }\n\n // We need to support type parameter declarations for arrow functions. This\n // is tricky. There are three situations we need to handle\n //\n // 1. This is either JSX or an arrow function. We'll try JSX first. If that\n // fails, we'll try an arrow function. If that fails, we'll throw the JSX\n // error.\n // 2. This is an arrow function. We'll parse the type parameter declaration,\n // parse the rest, make sure the rest is an arrow function, and go from\n // there\n // 3. This is neither. Just call the super method\n parseMaybeAssign(\n refExpressionErrors?: ExpressionErrors | null,\n afterLeftParse?: Function,\n ): N.Expression {\n let state = null;\n\n let jsx;\n\n if (\n this.hasPlugin(\"jsx\") &&\n (this.match(tt.jsxTagStart) || this.match(tt.lt))\n ) {\n state = this.state.clone();\n\n jsx = this.tryParse(\n () => super.parseMaybeAssign(refExpressionErrors, afterLeftParse),\n state,\n );\n\n /*:: invariant(!jsx.aborted) */\n /*:: invariant(jsx.node != null) */\n if (!jsx.error) return jsx.node!;\n\n // Remove `tc.j_expr` and `tc.j_oTag` from context added\n // by parsing `jsxTagStart` to stop the JSX plugin from\n // messing with the tokens\n const { context } = this.state;\n const currentContext = context[context.length - 1];\n if (currentContext === tc.j_oTag || currentContext === tc.j_expr) {\n context.pop();\n }\n }\n\n if (jsx?.error || this.match(tt.lt)) {\n state = state || this.state.clone();\n\n let typeParameters: N.TypeParameterDeclaration;\n\n const arrow = this.tryParse((abort: () => never) => {\n typeParameters = this.flowParseTypeParameterDeclaration();\n\n const arrowExpression = this.forwardNoArrowParamsConversionAt(\n typeParameters,\n () => {\n const result = super.parseMaybeAssign(\n refExpressionErrors,\n afterLeftParse,\n );\n\n this.resetStartLocationFromNode(result, typeParameters);\n\n return result;\n },\n );\n\n // (() => {});\n // (() => {}: any);\n if (arrowExpression.extra?.parenthesized) abort();\n\n // The above can return a TypeCastExpression when the arrow\n // expression is not wrapped in parens. See also `this.parseParenItem`.\n // (() => {}: any);\n const expr = this.maybeUnwrapTypeCastExpression(arrowExpression);\n\n if (expr.type !== \"ArrowFunctionExpression\") abort();\n\n expr.typeParameters = typeParameters;\n this.resetStartLocationFromNode(expr, typeParameters);\n\n return arrowExpression;\n }, state);\n\n let arrowExpression:\n | N.ArrowFunctionExpression\n | N.TypeCastExpression\n | undefined\n | null = null;\n\n if (\n arrow.node &&\n this.maybeUnwrapTypeCastExpression(arrow.node).type ===\n \"ArrowFunctionExpression\"\n ) {\n if (!arrow.error && !arrow.aborted) {\n // async () => {}\n // @ts-expect-error: refine tryParse typings\n if (arrow.node.async) {\n /*:: invariant(typeParameters) */\n this.raise(\n FlowErrors.UnexpectedTypeParameterBeforeAsyncArrowFunction,\n typeParameters!,\n );\n }\n return arrow.node;\n }\n\n // @ts-expect-error: refine typings\n arrowExpression = arrow.node;\n }\n\n // If we are here, both JSX and Flow parsing attempts failed.\n // Give the precedence to the JSX error, except if JSX had an\n // unrecoverable error while Flow didn't.\n // If the error is recoverable, we can only re-report it if there is\n // a node we can return.\n\n if (jsx?.node) {\n /*:: invariant(jsx.failState) */\n this.state = jsx.failState;\n return jsx.node;\n }\n\n if (arrowExpression) {\n /*:: invariant(arrow.failState) */\n this.state = arrow.failState!;\n return arrowExpression;\n }\n\n if (jsx?.thrown) throw jsx.error;\n if (arrow.thrown) throw arrow.error;\n\n /*:: invariant(typeParameters) */\n throw this.raise(\n FlowErrors.UnexpectedTokenAfterTypeParameter,\n typeParameters!,\n );\n }\n\n return super.parseMaybeAssign(refExpressionErrors, afterLeftParse);\n }\n\n // handle return types for arrow functions\n parseArrow(\n node: Undone,\n ): Undone | undefined | null {\n if (this.match(tt.colon)) {\n // @ts-expect-error todo(flow->ts)\n const result = this.tryParse(() => {\n const oldNoAnonFunctionType = this.state.noAnonFunctionType;\n this.state.noAnonFunctionType = true;\n\n const typeNode = this.startNode();\n\n [\n typeNode.typeAnnotation,\n // @ts-expect-error (destructuring not supported yet)\n node.predicate,\n ] = this.flowParseTypeAndPredicateInitialiser() as [\n N.FlowType,\n N.FlowPredicate,\n ];\n\n this.state.noAnonFunctionType = oldNoAnonFunctionType;\n\n if (this.canInsertSemicolon()) this.unexpected();\n if (!this.match(tt.arrow)) this.unexpected();\n\n return typeNode;\n });\n\n if (result.thrown) return null;\n /*:: invariant(result.node) */\n\n if (result.error) this.state = result.failState;\n\n // assign after it is clear it is an arrow\n // @ts-expect-error todo(flow->ts)\n node.returnType = result.node.typeAnnotation\n ? this.finishNode(result.node!, \"TypeAnnotation\")\n : null;\n }\n\n return super.parseArrow(node);\n }\n\n shouldParseArrow(params: N.Node[]): boolean {\n return this.match(tt.colon) || super.shouldParseArrow(params);\n }\n\n setArrowFunctionParameters(\n node: Undone,\n params:\n | (N.Expression | N.SpreadElement)[]\n | (N.Expression | N.RestElement)[],\n ): void {\n if (\n this.state.noArrowParamsConversionAt.includes(\n this.offsetToSourcePos(node.start),\n )\n ) {\n node.params = params as N.ArrowFunctionExpression[\"params\"];\n } else {\n super.setArrowFunctionParameters(node, params);\n }\n }\n\n checkParams(\n node: N.Function,\n allowDuplicates: boolean,\n isArrowFunction?: boolean | null,\n strictModeChanged: boolean = true,\n ): void {\n if (\n isArrowFunction &&\n this.state.noArrowParamsConversionAt.includes(\n this.offsetToSourcePos(node.start),\n )\n ) {\n return;\n }\n\n // ensure the `this` param is first, if it exists\n for (let i = 0; i < node.params.length; i++) {\n if (this.isThisParam(node.params[i]) && i > 0) {\n this.raise(FlowErrors.ThisParamMustBeFirst, node.params[i]);\n }\n }\n\n super.checkParams(\n node,\n allowDuplicates,\n isArrowFunction,\n strictModeChanged,\n );\n }\n\n parseParenAndDistinguishExpression(canBeArrow: boolean): N.Expression {\n return super.parseParenAndDistinguishExpression(\n canBeArrow &&\n !this.state.noArrowAt.includes(\n this.sourceToOffsetPos(this.state.start),\n ),\n );\n }\n\n parseSubscripts(\n base: N.Expression,\n startLoc: Position,\n noCalls?: boolean | null,\n ): N.Expression {\n if (\n base.type === \"Identifier\" &&\n base.name === \"async\" &&\n this.state.noArrowAt.includes(startLoc.index)\n ) {\n this.next();\n\n const node = this.startNodeAt(startLoc);\n node.callee = base;\n node.arguments = super.parseCallExpressionArguments();\n base = this.finishNode(node, \"CallExpression\");\n } else if (\n base.type === \"Identifier\" &&\n base.name === \"async\" &&\n this.match(tt.lt)\n ) {\n const state = this.state.clone();\n const arrow = this.tryParse(\n abort => this.parseAsyncArrowWithTypeParameters(startLoc) || abort(),\n state,\n );\n\n /*:: invariant(arrow.node != null) */\n // @ts-expect-error: refine tryParse typings\n if (!arrow.error && !arrow.aborted) return arrow.node;\n\n const result = this.tryParse(\n () => super.parseSubscripts(base, startLoc, noCalls),\n state,\n );\n\n if (result.node && !result.error) return result.node;\n\n if (arrow.node) {\n this.state = arrow.failState;\n // @ts-expect-error: refine tryParse typings\n return arrow.node;\n }\n\n if (result.node) {\n this.state = result.failState!;\n return result.node;\n }\n\n throw arrow.error || result.error!;\n }\n\n return super.parseSubscripts(base, startLoc, noCalls);\n }\n\n parseSubscript(\n base: N.Expression,\n startLoc: Position,\n noCalls: boolean | undefined | null,\n subscriptState: N.ParseSubscriptState,\n ): N.Expression {\n if (this.match(tt.questionDot) && this.isLookaheadToken_lt()) {\n subscriptState.optionalChainMember = true;\n if (noCalls) {\n subscriptState.stop = true;\n return base;\n }\n this.next();\n const node = this.startNodeAt(startLoc);\n node.callee = base;\n node.typeArguments =\n this.flowParseTypeParameterInstantiationInExpression();\n this.expect(tt.parenL);\n node.arguments = this.parseCallExpressionArguments();\n node.optional = true;\n return this.finishCallExpression(node, /* optional */ true);\n } else if (\n !noCalls &&\n this.shouldParseTypes() &&\n (this.match(tt.lt) ||\n // also handles `new C<`\n this.match(tt.bitShiftL))\n ) {\n const node = this.startNodeAt<\n N.OptionalCallExpression | N.CallExpression\n >(startLoc);\n node.callee = base;\n\n const result = this.tryParse(() => {\n node.typeArguments =\n this.flowParseTypeParameterInstantiationCallOrNew();\n this.expect(tt.parenL);\n node.arguments = super.parseCallExpressionArguments();\n if (subscriptState.optionalChainMember) {\n (node as Undone).optional = false;\n }\n return this.finishCallExpression(\n node,\n subscriptState.optionalChainMember,\n );\n });\n\n if (result.node) {\n if (result.error) this.state = result.failState;\n return result.node;\n }\n }\n\n return super.parseSubscript(base, startLoc, noCalls, subscriptState);\n }\n\n parseNewCallee(node: N.NewExpression): void {\n super.parseNewCallee(node);\n\n let targs = null;\n if (this.shouldParseTypes() && this.match(tt.lt)) {\n targs = this.tryParse(() =>\n this.flowParseTypeParameterInstantiationCallOrNew(),\n ).node;\n }\n node.typeArguments = targs;\n }\n\n parseAsyncArrowWithTypeParameters(\n startLoc: Position,\n ): N.ArrowFunctionExpression | undefined | null {\n const node = this.startNodeAt(startLoc);\n this.parseFunctionParams(node, false);\n if (!this.parseArrow(node)) return;\n return super.parseArrowExpression(\n node,\n /* params */ undefined,\n /* isAsync */ true,\n );\n }\n\n readToken_mult_modulo(code: number): void {\n const next = this.input.charCodeAt(this.state.pos + 1);\n if (\n code === charCodes.asterisk &&\n next === charCodes.slash &&\n this.state.hasFlowComment\n ) {\n this.state.hasFlowComment = false;\n this.state.pos += 2;\n this.nextToken();\n return;\n }\n\n super.readToken_mult_modulo(code);\n }\n\n readToken_pipe_amp(code: number): void {\n const next = this.input.charCodeAt(this.state.pos + 1);\n if (\n code === charCodes.verticalBar &&\n next === charCodes.rightCurlyBrace\n ) {\n // '|}'\n this.finishOp(tt.braceBarR, 2);\n return;\n }\n\n super.readToken_pipe_amp(code);\n }\n\n parseTopLevel(file: N.File, program: N.Program): N.File {\n const fileNode = super.parseTopLevel(file, program);\n if (this.state.hasFlowComment) {\n this.raise(\n FlowErrors.UnterminatedFlowComment,\n this.state.curPosition(),\n );\n }\n return fileNode;\n }\n\n skipBlockComment(): N.CommentBlock | undefined {\n if (this.hasPlugin(\"flowComments\") && this.skipFlowComment()) {\n if (this.state.hasFlowComment) {\n throw this.raise(FlowErrors.NestedFlowComment, this.state.startLoc);\n }\n this.hasFlowCommentCompletion();\n const commentSkip = this.skipFlowComment();\n if (commentSkip) {\n this.state.pos += commentSkip;\n this.state.hasFlowComment = true;\n }\n return;\n }\n\n return super.skipBlockComment(this.state.hasFlowComment ? \"*-/\" : \"*/\");\n }\n\n skipFlowComment(): number | false {\n const { pos } = this.state;\n let shiftToFirstNonWhiteSpace = 2;\n while (\n [charCodes.space, charCodes.tab].includes(\n // @ts-expect-error testing whether a number is included\n this.input.charCodeAt(pos + shiftToFirstNonWhiteSpace),\n )\n ) {\n shiftToFirstNonWhiteSpace++;\n }\n\n const ch2 = this.input.charCodeAt(shiftToFirstNonWhiteSpace + pos);\n const ch3 = this.input.charCodeAt(shiftToFirstNonWhiteSpace + pos + 1);\n\n if (ch2 === charCodes.colon && ch3 === charCodes.colon) {\n return shiftToFirstNonWhiteSpace + 2; // check for /*::\n }\n if (\n this.input.slice(\n shiftToFirstNonWhiteSpace + pos,\n shiftToFirstNonWhiteSpace + pos + 12,\n ) === \"flow-include\"\n ) {\n return shiftToFirstNonWhiteSpace + 12; // check for /*flow-include\n }\n if (ch2 === charCodes.colon && ch3 !== charCodes.colon) {\n return shiftToFirstNonWhiteSpace; // check for /*:, advance up to :\n }\n return false;\n }\n\n hasFlowCommentCompletion(): void {\n const end = this.input.indexOf(\"*/\", this.state.pos);\n if (end === -1) {\n throw this.raise(Errors.UnterminatedComment, this.state.curPosition());\n }\n }\n\n // Flow enum parsing\n\n flowEnumErrorBooleanMemberNotInitialized(\n loc: Position,\n {\n enumName,\n memberName,\n }: {\n enumName: string;\n memberName: string;\n },\n ): void {\n this.raise(FlowErrors.EnumBooleanMemberNotInitialized, loc, {\n memberName,\n enumName,\n });\n }\n\n flowEnumErrorInvalidMemberInitializer(\n loc: Position,\n enumContext: EnumContext,\n ) {\n return this.raise(\n !enumContext.explicitType\n ? FlowErrors.EnumInvalidMemberInitializerUnknownType\n : enumContext.explicitType === \"symbol\"\n ? FlowErrors.EnumInvalidMemberInitializerSymbolType\n : FlowErrors.EnumInvalidMemberInitializerPrimaryType,\n loc,\n enumContext,\n );\n }\n\n flowEnumErrorNumberMemberNotInitialized(\n loc: Position,\n details: {\n enumName: string;\n memberName: string;\n },\n ): void {\n this.raise(FlowErrors.EnumNumberMemberNotInitialized, loc, details);\n }\n\n flowEnumErrorStringMemberInconsistentlyInitialized(\n node: N.Node,\n details: {\n enumName: string;\n },\n ): void {\n this.raise(\n FlowErrors.EnumStringMemberInconsistentlyInitialized,\n node,\n details,\n );\n }\n\n flowEnumMemberInit(): EnumMemberInit {\n const startLoc = this.state.startLoc;\n const endOfInit = () => this.match(tt.comma) || this.match(tt.braceR);\n switch (this.state.type) {\n case tt.num: {\n const literal = this.parseNumericLiteral(this.state.value);\n if (endOfInit()) {\n return { type: \"number\", loc: literal.loc.start, value: literal };\n }\n return { type: \"invalid\", loc: startLoc };\n }\n case tt.string: {\n const literal = this.parseStringLiteral(this.state.value);\n if (endOfInit()) {\n return { type: \"string\", loc: literal.loc.start, value: literal };\n }\n return { type: \"invalid\", loc: startLoc };\n }\n case tt._true:\n case tt._false: {\n const literal = this.parseBooleanLiteral(this.match(tt._true));\n if (endOfInit()) {\n return {\n type: \"boolean\",\n loc: literal.loc.start,\n value: literal,\n };\n }\n return { type: \"invalid\", loc: startLoc };\n }\n default:\n return { type: \"invalid\", loc: startLoc };\n }\n }\n\n flowEnumMemberRaw(): {\n id: N.Identifier;\n init: EnumMemberInit;\n } {\n const loc = this.state.startLoc;\n const id = this.parseIdentifier(true);\n const init = this.eat(tt.eq)\n ? this.flowEnumMemberInit()\n : { type: \"none\" as const, loc };\n return { id, init };\n }\n\n flowEnumCheckExplicitTypeMismatch(\n loc: Position,\n context: EnumContext,\n expectedType: EnumExplicitType,\n ): void {\n const { explicitType } = context;\n if (explicitType === null) {\n return;\n }\n if (explicitType !== expectedType) {\n this.flowEnumErrorInvalidMemberInitializer(loc, context);\n }\n }\n\n flowEnumMembers({\n enumName,\n explicitType,\n }: {\n enumName: string;\n explicitType: EnumExplicitType;\n }): {\n members: {\n booleanMembers: Extract<\n N.FlowEnumMember,\n { type: \"EnumBooleanMember\" }\n >[];\n numberMembers: Extract<\n N.FlowEnumMember,\n { type: \"EnumNumberMember\" }\n >[];\n stringMembers: Extract<\n N.FlowEnumMember,\n { type: \"EnumStringMember\" }\n >[];\n defaultedMembers: Extract<\n N.FlowEnumMember,\n { type: \"EnumDefaultedMember\" }\n >[];\n };\n hasUnknownMembers: boolean;\n } {\n const seenNames = new Set();\n const members = {\n booleanMembers: [],\n numberMembers: [],\n stringMembers: [],\n defaultedMembers: [],\n };\n let hasUnknownMembers = false;\n while (!this.match(tt.braceR)) {\n if (this.eat(tt.ellipsis)) {\n hasUnknownMembers = true;\n break;\n }\n const memberNode = this.startNode();\n const { id, init } = this.flowEnumMemberRaw();\n const memberName = id.name;\n if (memberName === \"\") {\n continue;\n }\n if (/^[a-z]/.test(memberName)) {\n this.raise(FlowErrors.EnumInvalidMemberName, id, {\n memberName,\n suggestion: memberName[0].toUpperCase() + memberName.slice(1),\n enumName,\n });\n }\n if (seenNames.has(memberName)) {\n this.raise(FlowErrors.EnumDuplicateMemberName, id, {\n memberName,\n enumName,\n });\n }\n seenNames.add(memberName);\n const context = { enumName, explicitType, memberName };\n memberNode.id = id;\n switch (init.type) {\n case \"boolean\": {\n this.flowEnumCheckExplicitTypeMismatch(\n init.loc,\n context,\n \"boolean\",\n );\n memberNode.init = init.value;\n members.booleanMembers.push(\n // @ts-expect-error NodeAny not supported\n this.finishNode(memberNode, \"EnumBooleanMember\"),\n );\n break;\n }\n case \"number\": {\n this.flowEnumCheckExplicitTypeMismatch(init.loc, context, \"number\");\n memberNode.init = init.value;\n members.numberMembers.push(\n // @ts-expect-error NodeAny not supported\n this.finishNode(memberNode, \"EnumNumberMember\"),\n );\n break;\n }\n case \"string\": {\n this.flowEnumCheckExplicitTypeMismatch(init.loc, context, \"string\");\n memberNode.init = init.value;\n members.stringMembers.push(\n // @ts-expect-error NodeAny not supported\n this.finishNode(memberNode, \"EnumStringMember\"),\n );\n break;\n }\n case \"invalid\": {\n throw this.flowEnumErrorInvalidMemberInitializer(init.loc, context);\n }\n case \"none\": {\n switch (explicitType) {\n case \"boolean\":\n this.flowEnumErrorBooleanMemberNotInitialized(\n init.loc,\n context,\n );\n break;\n case \"number\":\n this.flowEnumErrorNumberMemberNotInitialized(init.loc, context);\n break;\n default:\n members.defaultedMembers.push(\n // @ts-expect-error NodeAny not supported\n this.finishNode(memberNode, \"EnumDefaultedMember\"),\n );\n }\n }\n }\n\n if (!this.match(tt.braceR)) {\n this.expect(tt.comma);\n }\n }\n return { members, hasUnknownMembers };\n }\n\n flowEnumStringMembers(\n initializedMembers: N.Node[],\n defaultedMembers: N.Node[],\n {\n enumName,\n }: {\n enumName: string;\n },\n ): N.Node[] {\n if (initializedMembers.length === 0) {\n return defaultedMembers;\n } else if (defaultedMembers.length === 0) {\n return initializedMembers;\n } else if (defaultedMembers.length > initializedMembers.length) {\n for (const member of initializedMembers) {\n this.flowEnumErrorStringMemberInconsistentlyInitialized(member, {\n enumName,\n });\n }\n return defaultedMembers;\n } else {\n for (const member of defaultedMembers) {\n this.flowEnumErrorStringMemberInconsistentlyInitialized(member, {\n enumName,\n });\n }\n return initializedMembers;\n }\n }\n\n flowEnumParseExplicitType({\n enumName,\n }: {\n enumName: string;\n }): EnumExplicitType {\n if (!this.eatContextual(tt._of)) return null;\n\n if (!tokenIsIdentifier(this.state.type)) {\n throw this.raise(\n FlowErrors.EnumInvalidExplicitTypeUnknownSupplied,\n this.state.startLoc,\n {\n enumName,\n },\n );\n }\n\n const { value } = this.state;\n this.next();\n\n if (\n value !== \"boolean\" &&\n value !== \"number\" &&\n value !== \"string\" &&\n value !== \"symbol\"\n ) {\n this.raise(FlowErrors.EnumInvalidExplicitType, this.state.startLoc, {\n enumName,\n invalidEnumType: value,\n });\n }\n\n return value;\n }\n\n flowEnumBody(node: Undone, id: N.Identifier): N.Node {\n const enumName = id.name;\n const nameLoc = id.loc.start;\n const explicitType = this.flowEnumParseExplicitType({ enumName });\n this.expect(tt.braceL);\n const { members, hasUnknownMembers } = this.flowEnumMembers({\n enumName,\n explicitType,\n });\n node.hasUnknownMembers = hasUnknownMembers;\n\n switch (explicitType) {\n case \"boolean\":\n node.explicitType = true;\n node.members = members.booleanMembers;\n this.expect(tt.braceR);\n return this.finishNode(node, \"EnumBooleanBody\");\n case \"number\":\n node.explicitType = true;\n node.members = members.numberMembers;\n this.expect(tt.braceR);\n return this.finishNode(node, \"EnumNumberBody\");\n case \"string\":\n node.explicitType = true;\n node.members = this.flowEnumStringMembers(\n members.stringMembers,\n members.defaultedMembers,\n { enumName },\n );\n this.expect(tt.braceR);\n return this.finishNode(node, \"EnumStringBody\");\n case \"symbol\":\n node.members = members.defaultedMembers;\n this.expect(tt.braceR);\n return this.finishNode(node, \"EnumSymbolBody\");\n default: {\n // `explicitType` is `null`\n const empty = () => {\n node.members = [];\n this.expect(tt.braceR);\n return this.finishNode(node, \"EnumStringBody\");\n };\n node.explicitType = false;\n\n const boolsLen = members.booleanMembers.length;\n const numsLen = members.numberMembers.length;\n const strsLen = members.stringMembers.length;\n const defaultedLen = members.defaultedMembers.length;\n\n if (!boolsLen && !numsLen && !strsLen && !defaultedLen) {\n return empty();\n } else if (!boolsLen && !numsLen) {\n node.members = this.flowEnumStringMembers(\n members.stringMembers,\n members.defaultedMembers,\n { enumName },\n );\n this.expect(tt.braceR);\n return this.finishNode(node, \"EnumStringBody\");\n } else if (!numsLen && !strsLen && boolsLen >= defaultedLen) {\n for (const member of members.defaultedMembers) {\n this.flowEnumErrorBooleanMemberNotInitialized(member.loc.start, {\n enumName,\n memberName: member.id.name,\n });\n }\n node.members = members.booleanMembers;\n this.expect(tt.braceR);\n return this.finishNode(node, \"EnumBooleanBody\");\n } else if (!boolsLen && !strsLen && numsLen >= defaultedLen) {\n for (const member of members.defaultedMembers) {\n this.flowEnumErrorNumberMemberNotInitialized(member.loc.start, {\n enumName,\n memberName: member.id.name,\n });\n }\n node.members = members.numberMembers;\n this.expect(tt.braceR);\n return this.finishNode(node, \"EnumNumberBody\");\n } else {\n this.raise(FlowErrors.EnumInconsistentMemberValues, nameLoc, {\n enumName,\n });\n return empty();\n }\n }\n }\n }\n\n flowParseEnumDeclaration(\n node: Undone,\n ): N.FlowEnumDeclaration {\n const id = this.parseIdentifier();\n node.id = id;\n node.body = this.flowEnumBody(this.startNode(), id);\n return this.finishNode(node, \"EnumDeclaration\");\n }\n\n jsxParseOpeningElementAfterName(\n node: N.JSXOpeningElement,\n ): N.JSXOpeningElement {\n if (this.shouldParseTypes()) {\n if (this.match(tt.lt) || this.match(tt.bitShiftL)) {\n node.typeArguments =\n this.flowParseTypeParameterInstantiationInExpression();\n }\n }\n\n return super.jsxParseOpeningElementAfterName(node);\n }\n\n // check if the next token is a tt.lt\n isLookaheadToken_lt(): boolean {\n const next = this.nextTokenStart();\n if (this.input.charCodeAt(next) === charCodes.lessThan) {\n const afterNext = this.input.charCodeAt(next + 1);\n return (\n afterNext !== charCodes.lessThan && afterNext !== charCodes.equalsTo\n );\n }\n return false;\n }\n\n // used after we have finished parsing types\n reScan_lt_gt() {\n const { type } = this.state;\n if (type === tt.lt) {\n this.state.pos -= 1;\n this.readToken_lt();\n } else if (type === tt.gt) {\n this.state.pos -= 1;\n this.readToken_gt();\n }\n }\n\n reScan_lt() {\n const { type } = this.state;\n if (type === tt.bitShiftL) {\n this.state.pos -= 2;\n this.finishOp(tt.lt, 1);\n return tt.lt;\n }\n return type;\n }\n\n maybeUnwrapTypeCastExpression(node: N.Node) {\n return node.type === \"TypeCastExpression\" ? node.expression : node;\n }\n };\n","const entities: Record = {\n // @ts-expect-error __proto__ is not an actual property: https://github.com/microsoft/TypeScript/issues/38385\n __proto__: null,\n quot: \"\\u0022\",\n amp: \"&\",\n apos: \"\\u0027\",\n lt: \"<\",\n gt: \">\",\n nbsp: \"\\u00A0\",\n iexcl: \"\\u00A1\",\n cent: \"\\u00A2\",\n pound: \"\\u00A3\",\n curren: \"\\u00A4\",\n yen: \"\\u00A5\",\n brvbar: \"\\u00A6\",\n sect: \"\\u00A7\",\n uml: \"\\u00A8\",\n copy: \"\\u00A9\",\n ordf: \"\\u00AA\",\n laquo: \"\\u00AB\",\n not: \"\\u00AC\",\n shy: \"\\u00AD\",\n reg: \"\\u00AE\",\n macr: \"\\u00AF\",\n deg: \"\\u00B0\",\n plusmn: \"\\u00B1\",\n sup2: \"\\u00B2\",\n sup3: \"\\u00B3\",\n acute: \"\\u00B4\",\n micro: \"\\u00B5\",\n para: \"\\u00B6\",\n middot: \"\\u00B7\",\n cedil: \"\\u00B8\",\n sup1: \"\\u00B9\",\n ordm: \"\\u00BA\",\n raquo: \"\\u00BB\",\n frac14: \"\\u00BC\",\n frac12: \"\\u00BD\",\n frac34: \"\\u00BE\",\n iquest: \"\\u00BF\",\n Agrave: \"\\u00C0\",\n Aacute: \"\\u00C1\",\n Acirc: \"\\u00C2\",\n Atilde: \"\\u00C3\",\n Auml: \"\\u00C4\",\n Aring: \"\\u00C5\",\n AElig: \"\\u00C6\",\n Ccedil: \"\\u00C7\",\n Egrave: \"\\u00C8\",\n Eacute: \"\\u00C9\",\n Ecirc: \"\\u00CA\",\n Euml: \"\\u00CB\",\n Igrave: \"\\u00CC\",\n Iacute: \"\\u00CD\",\n Icirc: \"\\u00CE\",\n Iuml: \"\\u00CF\",\n ETH: \"\\u00D0\",\n Ntilde: \"\\u00D1\",\n Ograve: \"\\u00D2\",\n Oacute: \"\\u00D3\",\n Ocirc: \"\\u00D4\",\n Otilde: \"\\u00D5\",\n Ouml: \"\\u00D6\",\n times: \"\\u00D7\",\n Oslash: \"\\u00D8\",\n Ugrave: \"\\u00D9\",\n Uacute: \"\\u00DA\",\n Ucirc: \"\\u00DB\",\n Uuml: \"\\u00DC\",\n Yacute: \"\\u00DD\",\n THORN: \"\\u00DE\",\n szlig: \"\\u00DF\",\n agrave: \"\\u00E0\",\n aacute: \"\\u00E1\",\n acirc: \"\\u00E2\",\n atilde: \"\\u00E3\",\n auml: \"\\u00E4\",\n aring: \"\\u00E5\",\n aelig: \"\\u00E6\",\n ccedil: \"\\u00E7\",\n egrave: \"\\u00E8\",\n eacute: \"\\u00E9\",\n ecirc: \"\\u00EA\",\n euml: \"\\u00EB\",\n igrave: \"\\u00EC\",\n iacute: \"\\u00ED\",\n icirc: \"\\u00EE\",\n iuml: \"\\u00EF\",\n eth: \"\\u00F0\",\n ntilde: \"\\u00F1\",\n ograve: \"\\u00F2\",\n oacute: \"\\u00F3\",\n ocirc: \"\\u00F4\",\n otilde: \"\\u00F5\",\n ouml: \"\\u00F6\",\n divide: \"\\u00F7\",\n oslash: \"\\u00F8\",\n ugrave: \"\\u00F9\",\n uacute: \"\\u00FA\",\n ucirc: \"\\u00FB\",\n uuml: \"\\u00FC\",\n yacute: \"\\u00FD\",\n thorn: \"\\u00FE\",\n yuml: \"\\u00FF\",\n OElig: \"\\u0152\",\n oelig: \"\\u0153\",\n Scaron: \"\\u0160\",\n scaron: \"\\u0161\",\n Yuml: \"\\u0178\",\n fnof: \"\\u0192\",\n circ: \"\\u02C6\",\n tilde: \"\\u02DC\",\n Alpha: \"\\u0391\",\n Beta: \"\\u0392\",\n Gamma: \"\\u0393\",\n Delta: \"\\u0394\",\n Epsilon: \"\\u0395\",\n Zeta: \"\\u0396\",\n Eta: \"\\u0397\",\n Theta: \"\\u0398\",\n Iota: \"\\u0399\",\n Kappa: \"\\u039A\",\n Lambda: \"\\u039B\",\n Mu: \"\\u039C\",\n Nu: \"\\u039D\",\n Xi: \"\\u039E\",\n Omicron: \"\\u039F\",\n Pi: \"\\u03A0\",\n Rho: \"\\u03A1\",\n Sigma: \"\\u03A3\",\n Tau: \"\\u03A4\",\n Upsilon: \"\\u03A5\",\n Phi: \"\\u03A6\",\n Chi: \"\\u03A7\",\n Psi: \"\\u03A8\",\n Omega: \"\\u03A9\",\n alpha: \"\\u03B1\",\n beta: \"\\u03B2\",\n gamma: \"\\u03B3\",\n delta: \"\\u03B4\",\n epsilon: \"\\u03B5\",\n zeta: \"\\u03B6\",\n eta: \"\\u03B7\",\n theta: \"\\u03B8\",\n iota: \"\\u03B9\",\n kappa: \"\\u03BA\",\n lambda: \"\\u03BB\",\n mu: \"\\u03BC\",\n nu: \"\\u03BD\",\n xi: \"\\u03BE\",\n omicron: \"\\u03BF\",\n pi: \"\\u03C0\",\n rho: \"\\u03C1\",\n sigmaf: \"\\u03C2\",\n sigma: \"\\u03C3\",\n tau: \"\\u03C4\",\n upsilon: \"\\u03C5\",\n phi: \"\\u03C6\",\n chi: \"\\u03C7\",\n psi: \"\\u03C8\",\n omega: \"\\u03C9\",\n thetasym: \"\\u03D1\",\n upsih: \"\\u03D2\",\n piv: \"\\u03D6\",\n ensp: \"\\u2002\",\n emsp: \"\\u2003\",\n thinsp: \"\\u2009\",\n zwnj: \"\\u200C\",\n zwj: \"\\u200D\",\n lrm: \"\\u200E\",\n rlm: \"\\u200F\",\n ndash: \"\\u2013\",\n mdash: \"\\u2014\",\n lsquo: \"\\u2018\",\n rsquo: \"\\u2019\",\n sbquo: \"\\u201A\",\n ldquo: \"\\u201C\",\n rdquo: \"\\u201D\",\n bdquo: \"\\u201E\",\n dagger: \"\\u2020\",\n Dagger: \"\\u2021\",\n bull: \"\\u2022\",\n hellip: \"\\u2026\",\n permil: \"\\u2030\",\n prime: \"\\u2032\",\n Prime: \"\\u2033\",\n lsaquo: \"\\u2039\",\n rsaquo: \"\\u203A\",\n oline: \"\\u203E\",\n frasl: \"\\u2044\",\n euro: \"\\u20AC\",\n image: \"\\u2111\",\n weierp: \"\\u2118\",\n real: \"\\u211C\",\n trade: \"\\u2122\",\n alefsym: \"\\u2135\",\n larr: \"\\u2190\",\n uarr: \"\\u2191\",\n rarr: \"\\u2192\",\n darr: \"\\u2193\",\n harr: \"\\u2194\",\n crarr: \"\\u21B5\",\n lArr: \"\\u21D0\",\n uArr: \"\\u21D1\",\n rArr: \"\\u21D2\",\n dArr: \"\\u21D3\",\n hArr: \"\\u21D4\",\n forall: \"\\u2200\",\n part: \"\\u2202\",\n exist: \"\\u2203\",\n empty: \"\\u2205\",\n nabla: \"\\u2207\",\n isin: \"\\u2208\",\n notin: \"\\u2209\",\n ni: \"\\u220B\",\n prod: \"\\u220F\",\n sum: \"\\u2211\",\n minus: \"\\u2212\",\n lowast: \"\\u2217\",\n radic: \"\\u221A\",\n prop: \"\\u221D\",\n infin: \"\\u221E\",\n ang: \"\\u2220\",\n and: \"\\u2227\",\n or: \"\\u2228\",\n cap: \"\\u2229\",\n cup: \"\\u222A\",\n int: \"\\u222B\",\n there4: \"\\u2234\",\n sim: \"\\u223C\",\n cong: \"\\u2245\",\n asymp: \"\\u2248\",\n ne: \"\\u2260\",\n equiv: \"\\u2261\",\n le: \"\\u2264\",\n ge: \"\\u2265\",\n sub: \"\\u2282\",\n sup: \"\\u2283\",\n nsub: \"\\u2284\",\n sube: \"\\u2286\",\n supe: \"\\u2287\",\n oplus: \"\\u2295\",\n otimes: \"\\u2297\",\n perp: \"\\u22A5\",\n sdot: \"\\u22C5\",\n lceil: \"\\u2308\",\n rceil: \"\\u2309\",\n lfloor: \"\\u230A\",\n rfloor: \"\\u230B\",\n lang: \"\\u2329\",\n rang: \"\\u232A\",\n loz: \"\\u25CA\",\n spades: \"\\u2660\",\n clubs: \"\\u2663\",\n hearts: \"\\u2665\",\n diams: \"\\u2666\",\n} as const;\nexport default entities;\n","import * as charCodes from \"charcodes\";\n\n// Matches a whole line break (where CRLF is considered a single\n// line break). Used to count lines.\nexport const lineBreak = /\\r\\n|[\\r\\n\\u2028\\u2029]/;\nexport const lineBreakG = new RegExp(lineBreak.source, \"g\");\n\n// https://tc39.github.io/ecma262/#sec-line-terminators\nexport function isNewLine(code: number): boolean {\n switch (code) {\n case charCodes.lineFeed:\n case charCodes.carriageReturn:\n case charCodes.lineSeparator:\n case charCodes.paragraphSeparator:\n return true;\n\n default:\n return false;\n }\n}\n\nexport function hasNewLine(input: string, start: number, end: number): boolean {\n for (let i = start; i < end; i++) {\n if (isNewLine(input.charCodeAt(i))) {\n return true;\n }\n }\n return false;\n}\n\nexport const skipWhiteSpace = /(?:\\s|\\/\\/.*|\\/\\*[^]*?\\*\\/)*/g;\n\nexport const skipWhiteSpaceInLine =\n /(?:[^\\S\\n\\r\\u2028\\u2029]|\\/\\/.*|\\/\\*.*?\\*\\/)*/g;\n\n// https://tc39.github.io/ecma262/#sec-white-space\nexport function isWhitespace(code: number): boolean {\n switch (code) {\n case 0x0009: // CHARACTER TABULATION\n case 0x000b: // LINE TABULATION\n case 0x000c: // FORM FEED\n case charCodes.space:\n case charCodes.nonBreakingSpace:\n case charCodes.oghamSpaceMark:\n case 0x2000: // EN QUAD\n case 0x2001: // EM QUAD\n case 0x2002: // EN SPACE\n case 0x2003: // EM SPACE\n case 0x2004: // THREE-PER-EM SPACE\n case 0x2005: // FOUR-PER-EM SPACE\n case 0x2006: // SIX-PER-EM SPACE\n case 0x2007: // FIGURE SPACE\n case 0x2008: // PUNCTUATION SPACE\n case 0x2009: // THIN SPACE\n case 0x200a: // HAIR SPACE\n case 0x202f: // NARROW NO-BREAK SPACE\n case 0x205f: // MEDIUM MATHEMATICAL SPACE\n case 0x3000: // IDEOGRAPHIC SPACE\n case 0xfeff: // ZERO WIDTH NO-BREAK SPACE\n return true;\n\n default:\n return false;\n }\n}\n","import * as charCodes from \"charcodes\";\n\nimport XHTMLEntities from \"./xhtml.ts\";\nimport type Parser from \"../../parser/index.ts\";\nimport type { ExpressionErrors } from \"../../parser/util.ts\";\nimport {\n tokenComesBeforeExpression,\n tokenIsKeyword,\n tokenLabelName,\n type TokenType,\n tt,\n} from \"../../tokenizer/types.ts\";\nimport type { TokContext } from \"../../tokenizer/context.ts\";\nimport { types as tc } from \"../../tokenizer/context.ts\";\nimport type * as N from \"../../types.ts\";\nimport { isIdentifierChar, isIdentifierStart } from \"../../util/identifier.ts\";\nimport type { Position } from \"../../util/location.ts\";\nimport { isNewLine } from \"../../util/whitespace.ts\";\nimport { Errors, ParseErrorEnum } from \"../../parse-error.ts\";\nimport type { Undone } from \"../../parser/node.ts\";\n\n/* eslint sort-keys: \"error\" */\nconst JsxErrors = ParseErrorEnum`jsx`({\n AttributeIsEmpty:\n \"JSX attributes must only be assigned a non-empty expression.\",\n MissingClosingTagElement: ({ openingTagName }: { openingTagName: string }) =>\n `Expected corresponding JSX closing tag for <${openingTagName}>.`,\n MissingClosingTagFragment: \"Expected corresponding JSX closing tag for <>.\",\n UnexpectedSequenceExpression:\n \"Sequence expressions cannot be directly nested inside JSX. Did you mean to wrap it in parentheses (...)?\",\n // FIXME: Unify with Errors.UnexpectedToken\n UnexpectedToken: ({\n unexpected,\n HTMLEntity,\n }: {\n unexpected: string;\n HTMLEntity: string;\n }) =>\n `Unexpected token \\`${unexpected}\\`. Did you mean \\`${HTMLEntity}\\` or \\`{'${unexpected}'}\\`?`,\n UnsupportedJsxValue:\n \"JSX value should be either an expression or a quoted JSX text.\",\n UnterminatedJsxContent: \"Unterminated JSX contents.\",\n UnwrappedAdjacentJSXElements:\n \"Adjacent JSX elements must be wrapped in an enclosing tag. Did you want a JSX fragment <>...?\",\n});\n\n/* eslint-disable sort-keys */\n\nfunction isFragment(object?: N.JSXTag | null): object is N.JSXFragmentTag {\n return object\n ? object.type === \"JSXOpeningFragment\" ||\n object.type === \"JSXClosingFragment\"\n : false;\n}\n\n// Transforms JSX element name to string.\n\nfunction getQualifiedJSXName(\n object: N.JSXIdentifier | N.JSXNamespacedName | N.JSXMemberExpression,\n): string {\n if (object.type === \"JSXIdentifier\") {\n return object.name;\n }\n\n if (object.type === \"JSXNamespacedName\") {\n return object.namespace.name + \":\" + object.name.name;\n }\n\n if (object.type === \"JSXMemberExpression\") {\n return (\n getQualifiedJSXName(object.object) +\n \".\" +\n getQualifiedJSXName(object.property)\n );\n }\n\n // istanbul ignore next\n // @ts-expect-error - object is 'never'\n throw new Error(\"Node had unexpected type: \" + object.type);\n}\n\nexport interface IJSXParserMixin {\n jsxParseOpeningElementAfterName(\n node: N.JSXOpeningElement,\n ): N.JSXOpeningElement;\n}\n\nexport type ClassWithMixin<\n T extends new (...args: any) => any,\n M extends object,\n> = T extends new (...args: infer P) => infer I\n ? new (...args: P) => I & M\n : never;\n\nexport default (superClass: typeof Parser) =>\n class JSXParserMixin extends superClass implements Parser, IJSXParserMixin {\n // Reads inline JSX contents token.\n\n jsxReadToken(): void {\n let out = \"\";\n let chunkStart = this.state.pos;\n for (;;) {\n if (this.state.pos >= this.length) {\n throw this.raise(\n JsxErrors.UnterminatedJsxContent,\n this.state.startLoc,\n );\n }\n\n const ch = this.input.charCodeAt(this.state.pos);\n\n switch (ch) {\n case charCodes.lessThan:\n case charCodes.leftCurlyBrace:\n if (this.state.pos === this.state.start) {\n if (ch === charCodes.lessThan && this.state.canStartJSXElement) {\n ++this.state.pos;\n this.finishToken(tt.jsxTagStart);\n } else {\n super.getTokenFromCode(ch);\n }\n return;\n }\n out += this.input.slice(chunkStart, this.state.pos);\n this.finishToken(tt.jsxText, out);\n return;\n\n case charCodes.ampersand:\n out += this.input.slice(chunkStart, this.state.pos);\n out += this.jsxReadEntity();\n chunkStart = this.state.pos;\n break;\n\n case charCodes.greaterThan:\n case charCodes.rightCurlyBrace:\n if (process.env.BABEL_8_BREAKING) {\n this.raise(JsxErrors.UnexpectedToken, this.state.curPosition(), {\n unexpected: this.input[this.state.pos],\n HTMLEntity:\n ch === charCodes.rightCurlyBrace ? \"}\" : \">\",\n });\n }\n /* falls through */\n\n default:\n if (isNewLine(ch)) {\n out += this.input.slice(chunkStart, this.state.pos);\n out += this.jsxReadNewLine(true);\n chunkStart = this.state.pos;\n } else {\n ++this.state.pos;\n }\n }\n }\n }\n\n jsxReadNewLine(normalizeCRLF: boolean): string {\n const ch = this.input.charCodeAt(this.state.pos);\n let out;\n ++this.state.pos;\n if (\n ch === charCodes.carriageReturn &&\n this.input.charCodeAt(this.state.pos) === charCodes.lineFeed\n ) {\n ++this.state.pos;\n out = normalizeCRLF ? \"\\n\" : \"\\r\\n\";\n } else {\n out = String.fromCharCode(ch);\n }\n ++this.state.curLine;\n this.state.lineStart = this.state.pos;\n\n return out;\n }\n\n jsxReadString(quote: number): void {\n let out = \"\";\n let chunkStart = ++this.state.pos;\n for (;;) {\n if (this.state.pos >= this.length) {\n throw this.raise(Errors.UnterminatedString, this.state.startLoc);\n }\n\n const ch = this.input.charCodeAt(this.state.pos);\n if (ch === quote) break;\n if (ch === charCodes.ampersand) {\n out += this.input.slice(chunkStart, this.state.pos);\n out += this.jsxReadEntity();\n chunkStart = this.state.pos;\n } else if (isNewLine(ch)) {\n out += this.input.slice(chunkStart, this.state.pos);\n out += this.jsxReadNewLine(false);\n chunkStart = this.state.pos;\n } else {\n ++this.state.pos;\n }\n }\n out += this.input.slice(chunkStart, this.state.pos++);\n this.finishToken(tt.string, out);\n }\n\n jsxReadEntity(): string {\n const startPos = ++this.state.pos;\n if (this.codePointAtPos(this.state.pos) === charCodes.numberSign) {\n ++this.state.pos;\n\n let radix = 10;\n if (this.codePointAtPos(this.state.pos) === charCodes.lowercaseX) {\n radix = 16;\n ++this.state.pos;\n }\n\n const codePoint = this.readInt(\n radix,\n /* len */ undefined,\n /* forceLen */ false,\n /* allowNumSeparator */ \"bail\",\n );\n if (\n codePoint !== null &&\n this.codePointAtPos(this.state.pos) === charCodes.semicolon\n ) {\n ++this.state.pos;\n return String.fromCodePoint(codePoint);\n }\n } else {\n let count = 0;\n let semi = false;\n while (\n count++ < 10 &&\n this.state.pos < this.length &&\n !(semi = this.codePointAtPos(this.state.pos) === charCodes.semicolon)\n ) {\n ++this.state.pos;\n }\n\n if (semi) {\n const desc = this.input.slice(startPos, this.state.pos);\n const entity = XHTMLEntities[desc];\n ++this.state.pos;\n\n if (entity) {\n return entity;\n }\n }\n }\n\n // Not a valid entity\n this.state.pos = startPos;\n return \"&\";\n }\n\n // Read a JSX identifier (valid tag or attribute name).\n //\n // Optimized version since JSX identifiers can\"t contain\n // escape characters and so can be read as single slice.\n // Also assumes that first character was already checked\n // by isIdentifierStart in readToken.\n\n jsxReadWord(): void {\n let ch;\n const start = this.state.pos;\n do {\n ch = this.input.charCodeAt(++this.state.pos);\n } while (isIdentifierChar(ch) || ch === charCodes.dash);\n this.finishToken(tt.jsxName, this.input.slice(start, this.state.pos));\n }\n\n // Parse next token as JSX identifier\n\n jsxParseIdentifier(): N.JSXIdentifier {\n const node = this.startNode();\n if (this.match(tt.jsxName)) {\n node.name = this.state.value;\n } else if (tokenIsKeyword(this.state.type)) {\n node.name = tokenLabelName(this.state.type);\n } else {\n this.unexpected();\n }\n this.next();\n return this.finishNode(node, \"JSXIdentifier\");\n }\n\n // Parse namespaced identifier.\n\n jsxParseNamespacedName(): N.JSXNamespacedName | N.JSXIdentifier {\n const startLoc = this.state.startLoc;\n const name = this.jsxParseIdentifier();\n if (!this.eat(tt.colon)) return name;\n\n const node = this.startNodeAt(startLoc);\n node.namespace = name;\n node.name = this.jsxParseIdentifier();\n return this.finishNode(node, \"JSXNamespacedName\");\n }\n\n // Parses element name in any form - namespaced, member\n // or single identifier.\n\n jsxParseElementName():\n | N.JSXIdentifier\n | N.JSXNamespacedName\n | N.JSXMemberExpression {\n const startLoc = this.state.startLoc;\n let node: N.JSXIdentifier | N.JSXNamespacedName | N.JSXMemberExpression =\n this.jsxParseNamespacedName();\n if (node.type === \"JSXNamespacedName\") {\n return node;\n }\n while (this.eat(tt.dot)) {\n const newNode = this.startNodeAt(startLoc);\n newNode.object = node;\n newNode.property = this.jsxParseIdentifier();\n node = this.finishNode(newNode, \"JSXMemberExpression\");\n }\n return node;\n }\n\n // Parses any type of JSX attribute value.\n\n jsxParseAttributeValue():\n | N.JSXExpressionContainer\n | N.JSXElement\n | N.StringLiteral {\n let node;\n switch (this.state.type) {\n case tt.braceL:\n node = this.startNode();\n this.setContext(tc.brace);\n this.next();\n node = this.jsxParseExpressionContainer(node, tc.j_oTag);\n if (node.expression.type === \"JSXEmptyExpression\") {\n this.raise(JsxErrors.AttributeIsEmpty, node);\n }\n return node;\n\n case tt.jsxTagStart:\n case tt.string:\n return this.parseExprAtom() as N.JSXElement | N.StringLiteral;\n\n default:\n throw this.raise(JsxErrors.UnsupportedJsxValue, this.state.startLoc);\n }\n }\n\n // JSXEmptyExpression is unique type since it doesn't actually parse anything,\n // and so it should start at the end of last read token (left brace) and finish\n // at the beginning of the next one (right brace).\n\n jsxParseEmptyExpression(): N.JSXEmptyExpression {\n const node = this.startNodeAt(this.state.lastTokEndLoc!);\n return this.finishNodeAt(node, \"JSXEmptyExpression\", this.state.startLoc);\n }\n\n // Parse JSX spread child\n\n jsxParseSpreadChild(node: Undone): N.JSXSpreadChild {\n this.next(); // ellipsis\n node.expression = this.parseExpression();\n this.setContext(tc.j_expr);\n this.state.canStartJSXElement = true;\n this.expect(tt.braceR);\n\n return this.finishNode(node, \"JSXSpreadChild\");\n }\n\n // Parses JSX expression enclosed into curly brackets.\n\n jsxParseExpressionContainer(\n node: Undone,\n previousContext: TokContext,\n ): N.JSXExpressionContainer {\n if (this.match(tt.braceR)) {\n node.expression = this.jsxParseEmptyExpression();\n } else {\n const expression = this.parseExpression();\n\n if (process.env.BABEL_8_BREAKING) {\n if (\n expression.type === \"SequenceExpression\" &&\n !expression.extra?.parenthesized\n ) {\n this.raise(\n JsxErrors.UnexpectedSequenceExpression,\n expression.expressions[1],\n );\n }\n }\n\n node.expression = expression;\n }\n this.setContext(previousContext);\n this.state.canStartJSXElement = true;\n this.expect(tt.braceR);\n\n return this.finishNode(node, \"JSXExpressionContainer\");\n }\n\n // Parses following JSX attribute name-value pair.\n\n jsxParseAttribute(): N.JSXAttribute | N.JSXSpreadAttribute {\n const node = this.startNode();\n if (this.match(tt.braceL)) {\n this.setContext(tc.brace);\n this.next();\n this.expect(tt.ellipsis);\n node.argument = this.parseMaybeAssignAllowIn();\n this.setContext(tc.j_oTag);\n this.state.canStartJSXElement = true;\n this.expect(tt.braceR);\n return this.finishNode(node, \"JSXSpreadAttribute\");\n }\n node.name = this.jsxParseNamespacedName();\n node.value = this.eat(tt.eq) ? this.jsxParseAttributeValue() : null;\n return this.finishNode(node, \"JSXAttribute\");\n }\n\n // Parses JSX opening tag starting after \"<\".\n\n jsxParseOpeningElementAt(\n startLoc: Position,\n ): N.JSXOpeningElement | N.JSXOpeningFragment {\n const node = this.startNodeAt(\n startLoc,\n );\n if (this.eat(tt.jsxTagEnd)) {\n return this.finishNode(node, \"JSXOpeningFragment\");\n }\n node.name = this.jsxParseElementName();\n return this.jsxParseOpeningElementAfterName(\n node as Undone,\n );\n }\n\n jsxParseOpeningElementAfterName(\n node: Undone,\n ): N.JSXOpeningElement {\n const attributes: (N.JSXAttribute | N.JSXSpreadAttribute)[] = [];\n while (!this.match(tt.slash) && !this.match(tt.jsxTagEnd)) {\n attributes.push(this.jsxParseAttribute());\n }\n node.attributes = attributes;\n node.selfClosing = this.eat(tt.slash);\n this.expect(tt.jsxTagEnd);\n return this.finishNode(node, \"JSXOpeningElement\");\n }\n\n // Parses JSX closing tag starting after \"(\n startLoc,\n );\n if (this.eat(tt.jsxTagEnd)) {\n return this.finishNode(node, \"JSXClosingFragment\");\n }\n node.name = this.jsxParseElementName();\n this.expect(tt.jsxTagEnd);\n return this.finishNode(node, \"JSXClosingElement\");\n }\n\n // Parses entire JSX element, including it\"s opening tag\n // (starting after \"<\"), attributes, contents and closing tag.\n\n jsxParseElementAt(startLoc: Position): N.JSXElement | N.JSXFragment {\n const node = this.startNodeAt(startLoc);\n const children = [];\n const openingElement = this.jsxParseOpeningElementAt(startLoc);\n let closingElement = null;\n\n if (!openingElement.selfClosing) {\n contents: for (;;) {\n switch (this.state.type) {\n case tt.jsxTagStart:\n startLoc = this.state.startLoc;\n this.next();\n if (this.eat(tt.slash)) {\n closingElement = this.jsxParseClosingElementAt(startLoc);\n break contents;\n }\n children.push(this.jsxParseElementAt(startLoc));\n break;\n\n case tt.jsxText:\n children.push(this.parseLiteral(this.state.value, \"JSXText\"));\n break;\n\n case tt.braceL: {\n const node = this.startNode<\n N.JSXSpreadChild | N.JSXExpressionContainer\n >();\n this.setContext(tc.brace);\n this.next();\n if (this.match(tt.ellipsis)) {\n children.push(this.jsxParseSpreadChild(node));\n } else {\n children.push(\n this.jsxParseExpressionContainer(node, tc.j_expr),\n );\n }\n\n break;\n }\n // istanbul ignore next - should never happen\n default:\n this.unexpected();\n }\n }\n\n if (\n isFragment(openingElement) &&\n !isFragment(closingElement) &&\n closingElement !== null\n ) {\n this.raise(JsxErrors.MissingClosingTagFragment, closingElement);\n } else if (!isFragment(openingElement) && isFragment(closingElement)) {\n this.raise(JsxErrors.MissingClosingTagElement, closingElement, {\n openingTagName: getQualifiedJSXName(openingElement.name),\n });\n } else if (!isFragment(openingElement) && !isFragment(closingElement)) {\n if (\n getQualifiedJSXName(closingElement.name) !==\n getQualifiedJSXName(openingElement.name)\n ) {\n this.raise(JsxErrors.MissingClosingTagElement, closingElement, {\n openingTagName: getQualifiedJSXName(openingElement.name),\n });\n }\n }\n }\n\n if (isFragment(openingElement)) {\n node.openingFragment = openingElement;\n node.closingFragment = closingElement;\n } else {\n node.openingElement = openingElement;\n node.closingElement = closingElement;\n }\n node.children = children;\n if (this.match(tt.lt)) {\n throw this.raise(\n JsxErrors.UnwrappedAdjacentJSXElements,\n this.state.startLoc,\n );\n }\n\n return isFragment(openingElement)\n ? this.finishNode(node, \"JSXFragment\")\n : this.finishNode(node, \"JSXElement\");\n }\n\n // Parses entire JSX element from current position.\n\n jsxParseElement(): N.JSXElement | N.JSXFragment {\n const startLoc = this.state.startLoc;\n this.next();\n return this.jsxParseElementAt(startLoc);\n }\n\n setContext(newContext: TokContext) {\n const { context } = this.state;\n context[context.length - 1] = newContext;\n }\n\n // ==================================\n // Overrides\n // ==================================\n\n parseExprAtom(refExpressionErrors?: ExpressionErrors | null): N.Expression {\n if (this.match(tt.jsxTagStart)) {\n return this.jsxParseElement();\n } else if (\n this.match(tt.lt) &&\n this.input.charCodeAt(this.state.pos) !== charCodes.exclamationMark\n ) {\n // In case we encounter an lt token here it will always be the start of\n // jsx as the lt sign is not allowed in places that expect an expression\n this.replaceToken(tt.jsxTagStart);\n return this.jsxParseElement();\n } else {\n return super.parseExprAtom(refExpressionErrors);\n }\n }\n\n skipSpace() {\n const curContext = this.curContext();\n if (!curContext.preserveSpace) super.skipSpace();\n }\n\n getTokenFromCode(code: number): void {\n const context = this.curContext();\n\n if (context === tc.j_expr) {\n this.jsxReadToken();\n return;\n }\n\n if (context === tc.j_oTag || context === tc.j_cTag) {\n if (isIdentifierStart(code)) {\n this.jsxReadWord();\n return;\n }\n\n if (code === charCodes.greaterThan) {\n ++this.state.pos;\n this.finishToken(tt.jsxTagEnd);\n return;\n }\n\n if (\n (code === charCodes.quotationMark || code === charCodes.apostrophe) &&\n context === tc.j_oTag\n ) {\n this.jsxReadString(code);\n return;\n }\n }\n\n if (\n code === charCodes.lessThan &&\n this.state.canStartJSXElement &&\n this.input.charCodeAt(this.state.pos + 1) !== charCodes.exclamationMark\n ) {\n ++this.state.pos;\n this.finishToken(tt.jsxTagStart);\n return;\n }\n\n super.getTokenFromCode(code);\n }\n\n updateContext(prevType: TokenType): void {\n const { context, type } = this.state;\n if (type === tt.slash && prevType === tt.jsxTagStart) {\n // do not consider JSX expr -> JSX open tag -> ... anymore\n // reconsider as closing tag context\n context.splice(-2, 2, tc.j_cTag);\n this.state.canStartJSXElement = false;\n } else if (type === tt.jsxTagStart) {\n // start opening tag context\n context.push(tc.j_oTag);\n } else if (type === tt.jsxTagEnd) {\n const out = context[context.length - 1];\n if ((out === tc.j_oTag && prevType === tt.slash) || out === tc.j_cTag) {\n context.pop();\n this.state.canStartJSXElement =\n context[context.length - 1] === tc.j_expr;\n } else {\n this.setContext(tc.j_expr);\n this.state.canStartJSXElement = true;\n }\n } else {\n this.state.canStartJSXElement = tokenComesBeforeExpression(type);\n }\n }\n };\n","import type { Position } from \"../../util/location.ts\";\nimport ScopeHandler, { NameType, Scope } from \"../../util/scope.ts\";\nimport { BindingFlag, ScopeFlag } from \"../../util/scopeflags.ts\";\nimport type * as N from \"../../types.ts\";\nimport { Errors } from \"../../parse-error.ts\";\n\nconst enum TsNameType {\n Types = 1 << 0,\n // enums (which are also in .types)\n Enums = 1 << 1,\n // const enums (which are also in .enums and .types)\n ConstEnums = 1 << 2,\n // classes (which are also in .lexical) and interface (which are also in .types)\n Classes = 1 << 3,\n // namespaces and ambient functions (or classes) are too difficult to track,\n // especially without type analysis.\n // We need to track them anyway, to avoid \"X is not defined\" errors\n // when exporting them.\n ExportOnlyBindings = 1 << 4,\n}\n\nclass TypeScriptScope extends Scope {\n tsNames = new Map();\n}\n\n// See https://github.com/babel/babel/pull/9766#discussion_r268920730 for an\n// explanation of how typescript handles scope.\n\nexport default class TypeScriptScopeHandler extends ScopeHandler {\n importsStack: Set[] = [];\n\n createScope(flags: ScopeFlag): TypeScriptScope {\n this.importsStack.push(new Set()); // Always keep the top-level scope for export checks.\n\n return new TypeScriptScope(flags);\n }\n\n enter(flags: ScopeFlag): void {\n if (flags === ScopeFlag.TS_MODULE) {\n this.importsStack.push(new Set());\n }\n\n super.enter(flags);\n }\n\n exit() {\n const flags = super.exit();\n\n if (flags === ScopeFlag.TS_MODULE) {\n this.importsStack.pop();\n }\n\n return flags;\n }\n\n hasImport(name: string, allowShadow?: boolean) {\n const len = this.importsStack.length;\n if (this.importsStack[len - 1].has(name)) {\n return true;\n }\n if (!allowShadow && len > 1) {\n for (let i = 0; i < len - 1; i++) {\n if (this.importsStack[i].has(name)) return true;\n }\n }\n return false;\n }\n\n declareName(name: string, bindingType: BindingFlag, loc: Position) {\n if (bindingType & BindingFlag.FLAG_TS_IMPORT) {\n if (this.hasImport(name, true)) {\n this.parser.raise(Errors.VarRedeclaration, loc, {\n identifierName: name,\n });\n }\n this.importsStack[this.importsStack.length - 1].add(name);\n return;\n }\n\n const scope = this.currentScope();\n let type = scope.tsNames.get(name) || 0;\n\n if (bindingType & BindingFlag.FLAG_TS_EXPORT_ONLY) {\n this.maybeExportDefined(scope, name);\n scope.tsNames.set(name, type | TsNameType.ExportOnlyBindings);\n return;\n }\n\n super.declareName(name, bindingType, loc);\n\n if (bindingType & BindingFlag.KIND_TYPE) {\n if (!(bindingType & BindingFlag.KIND_VALUE)) {\n // \"Value\" bindings have already been registered by the superclass.\n this.checkRedeclarationInScope(scope, name, bindingType, loc);\n this.maybeExportDefined(scope, name);\n }\n type = type | TsNameType.Types;\n }\n if (bindingType & BindingFlag.FLAG_TS_ENUM) {\n type = type | TsNameType.Enums;\n }\n if (bindingType & BindingFlag.FLAG_TS_CONST_ENUM) {\n type = type | TsNameType.ConstEnums;\n }\n if (bindingType & BindingFlag.FLAG_CLASS) {\n type = type | TsNameType.Classes;\n }\n if (type) scope.tsNames.set(name, type);\n }\n\n isRedeclaredInScope(\n scope: TypeScriptScope,\n name: string,\n bindingType: BindingFlag,\n ): boolean {\n const type = scope.tsNames.get(name)!;\n if ((type & TsNameType.Enums) > 0) {\n if (bindingType & BindingFlag.FLAG_TS_ENUM) {\n // Enums can be merged with other enums if they are both\n // const or both non-const.\n const isConst = !!(bindingType & BindingFlag.FLAG_TS_CONST_ENUM);\n const wasConst = (type & TsNameType.ConstEnums) > 0;\n return isConst !== wasConst;\n }\n return true;\n }\n if (\n bindingType & BindingFlag.FLAG_CLASS &&\n (type & TsNameType.Classes) > 0\n ) {\n if (scope.names.get(name)! & NameType.Lexical) {\n // Classes can be merged with interfaces\n return !!(bindingType & BindingFlag.KIND_VALUE);\n } else {\n // Interface can be merged with other classes or interfaces\n return false;\n }\n }\n if (bindingType & BindingFlag.KIND_TYPE && (type & TsNameType.Types) > 0) {\n return true;\n }\n\n return super.isRedeclaredInScope(scope, name, bindingType);\n }\n\n checkLocalExport(id: N.Identifier) {\n const { name } = id;\n\n if (this.hasImport(name)) return;\n\n const len = this.scopeStack.length;\n for (let i = len - 1; i >= 0; i--) {\n const scope = this.scopeStack[i];\n const type = scope.tsNames.get(name)!;\n if (\n (type & TsNameType.Types) > 0 ||\n (type & TsNameType.ExportOnlyBindings) > 0\n ) {\n return;\n }\n }\n\n super.checkLocalExport(id);\n }\n}\n","// ProductionParameterHandler is a stack fashioned production parameter tracker\n// https://tc39.es/ecma262/#sec-grammar-notation\n// The tracked parameters are defined above.\n//\n// Whenever [+Await]/[+Yield] appears in the right-hand sides of a production,\n// we must enter a new tracking stack. For example when parsing\n//\n// AsyncFunctionDeclaration [Yield, Await]:\n// async [no LineTerminator here] function BindingIdentifier[?Yield, ?Await]\n// ( FormalParameters[~Yield, +Await] ) { AsyncFunctionBody }\n//\n// we must follow such process:\n//\n// 1. parse async keyword\n// 2. parse function keyword\n// 3. parse bindingIdentifier <= inherit current parameters: [?Await]\n// 4. enter new stack with (PARAM_AWAIT)\n// 5. parse formal parameters <= must have [Await] parameter [+Await]\n// 6. parse function body\n// 7. exit current stack\n\nexport const enum ParamKind {\n // Initial Parameter flags\n PARAM = 0b0000,\n // track [Yield] production parameter\n PARAM_YIELD = 0b0001,\n // track [Await] production parameter\n PARAM_AWAIT = 0b0010,\n // track [Return] production parameter\n PARAM_RETURN = 0b0100,\n // track [In] production parameter\n PARAM_IN = 0b1000,\n}\n\n// todo(flow->ts) - check if more granular type can be used,\n// type below is not good because things like PARAM_AWAIT|PARAM_YIELD are not included\n// export type ParamKind =\n// | typeof PARAM\n// | typeof PARAM_AWAIT\n// | typeof PARAM_IN\n// | typeof PARAM_RETURN\n// | typeof PARAM_YIELD;\n\nexport default class ProductionParameterHandler {\n stacks: ParamKind[] = [];\n enter(flags: ParamKind) {\n this.stacks.push(flags);\n }\n\n exit() {\n this.stacks.pop();\n }\n\n currentFlags(): ParamKind {\n return this.stacks[this.stacks.length - 1];\n }\n\n get hasAwait(): boolean {\n return (this.currentFlags() & ParamKind.PARAM_AWAIT) > 0;\n }\n\n get hasYield(): boolean {\n return (this.currentFlags() & ParamKind.PARAM_YIELD) > 0;\n }\n\n get hasReturn(): boolean {\n return (this.currentFlags() & ParamKind.PARAM_RETURN) > 0;\n }\n\n get hasIn(): boolean {\n return (this.currentFlags() & ParamKind.PARAM_IN) > 0;\n }\n}\n\nexport function functionFlags(\n isAsync: boolean,\n isGenerator: boolean,\n): ParamKind {\n return (\n (isAsync ? ParamKind.PARAM_AWAIT : 0) |\n (isGenerator ? ParamKind.PARAM_YIELD : 0)\n );\n}\n","import type { OptionFlags, Options } from \"../options.ts\";\nimport type State from \"../tokenizer/state.ts\";\nimport type { PluginsMap } from \"./index.ts\";\nimport type ScopeHandler from \"../util/scope.ts\";\nimport type ExpressionScopeHandler from \"../util/expression-scope.ts\";\nimport type ClassScopeHandler from \"../util/class-scope.ts\";\nimport type ProductionParameterHandler from \"../util/production-parameter.ts\";\nimport type {\n ParserPluginWithOptions,\n PluginConfig,\n PluginOptions,\n} from \"../typings.ts\";\nimport type * as N from \"../types.ts\";\n\nexport default class BaseParser {\n // Properties set by constructor in index.js\n declare options: Options;\n declare optionFlags: OptionFlags;\n declare inModule: boolean;\n declare scope: ScopeHandler;\n declare classScope: ClassScopeHandler;\n declare prodParam: ProductionParameterHandler;\n declare expressionScope: ExpressionScopeHandler;\n declare plugins: PluginsMap;\n declare filename: string | undefined | null;\n declare startIndex: number;\n // Names of exports store. `default` is stored as a name for both\n // `export default foo;` and `export { foo as default };`.\n declare exportedIdentifiers: Set;\n sawUnambiguousESM: boolean = false;\n ambiguousScriptDifferentAst: boolean = false;\n\n // Initialized by Tokenizer\n declare state: State;\n // input and length are not in state as they are constant and we do\n // not want to ever copy them, which happens if state gets cloned\n declare input: string;\n declare length: number;\n // Comment store for Program.comments\n declare comments: N.Comment[];\n\n sourceToOffsetPos(sourcePos: number) {\n return sourcePos + this.startIndex;\n }\n\n offsetToSourcePos(offsetPos: number) {\n return offsetPos - this.startIndex;\n }\n\n // This method accepts either a string (plugin name) or an array pair\n // (plugin name and options object). If an options object is given,\n // then each value is non-recursively checked for identity with that\n // plugin’s actual option value.\n hasPlugin(pluginConfig: PluginConfig): boolean {\n if (typeof pluginConfig === \"string\") {\n return this.plugins.has(pluginConfig);\n } else {\n const [pluginName, pluginOptions] = pluginConfig;\n if (!this.hasPlugin(pluginName)) {\n return false;\n }\n const actualOptions = this.plugins.get(pluginName);\n for (const key of Object.keys(\n pluginOptions,\n ) as (keyof typeof pluginOptions)[]) {\n if (actualOptions?.[key] !== pluginOptions[key]) {\n return false;\n }\n }\n return true;\n }\n }\n\n getPluginOption<\n PluginName extends ParserPluginWithOptions[0],\n OptionName extends keyof PluginOptions,\n >(plugin: PluginName, name: OptionName) {\n return (this.plugins.get(plugin) as null | PluginOptions)?.[\n name\n ];\n }\n}\n","/*:: declare var invariant; */\n\nimport BaseParser from \"./base.ts\";\nimport type { Comment, Node } from \"../types.ts\";\nimport * as charCodes from \"charcodes\";\nimport type { Undone } from \"./node.ts\";\n\n/**\n * A whitespace token containing comments\n */\nexport type CommentWhitespace = {\n /**\n * the start of the whitespace token.\n */\n start: number;\n /**\n * the end of the whitespace token.\n */\n end: number;\n /**\n * the containing comments\n */\n comments: Comment[];\n /**\n * the immediately preceding AST node of the whitespace token\n */\n leadingNode: Node | null;\n /**\n * the immediately following AST node of the whitespace token\n */\n trailingNode: Node | null;\n /**\n * the innermost AST node containing the whitespace with minimal size (|end - start|)\n */\n containingNode: Node | null;\n};\n\n/**\n * Merge comments with node's trailingComments or assign comments to be\n * trailingComments. New comments will be placed before old comments\n * because the commentStack is enumerated reversely.\n */\nfunction setTrailingComments(node: Undone, comments: Comment[]) {\n if (node.trailingComments === undefined) {\n node.trailingComments = comments;\n } else {\n node.trailingComments.unshift(...comments);\n }\n}\n\n/**\n * Merge comments with node's leadingComments or assign comments to be\n * leadingComments. New comments will be placed before old comments\n * because the commentStack is enumerated reversely.\n */\nfunction setLeadingComments(node: Undone, comments: Comment[]) {\n if (node.leadingComments === undefined) {\n node.leadingComments = comments;\n } else {\n node.leadingComments.unshift(...comments);\n }\n}\n\n/**\n * Merge comments with node's innerComments or assign comments to be\n * innerComments. New comments will be placed before old comments\n * because the commentStack is enumerated reversely.\n */\nexport function setInnerComments(node: Undone, comments: Comment[]) {\n if (node.innerComments === undefined) {\n node.innerComments = comments;\n } else {\n node.innerComments.unshift(...comments);\n }\n}\n\n/**\n * Given node and elements array, if elements has non-null element,\n * merge comments to its trailingComments, otherwise merge comments\n * to node's innerComments\n */\nfunction adjustInnerComments(\n node: Undone,\n elements: (Node | null)[],\n commentWS: CommentWhitespace,\n) {\n let lastElement = null;\n let i = elements.length;\n while (lastElement === null && i > 0) {\n lastElement = elements[--i];\n }\n if (lastElement === null || lastElement.start > commentWS.start) {\n setInnerComments(node, commentWS.comments);\n } else {\n setTrailingComments(lastElement, commentWS.comments);\n }\n}\n\nexport default class CommentsParser extends BaseParser {\n addComment(comment: Comment): void {\n if (this.filename) comment.loc.filename = this.filename;\n const { commentsLen } = this.state;\n if (this.comments.length !== commentsLen) {\n this.comments.length = commentsLen;\n }\n this.comments.push(comment);\n this.state.commentsLen++;\n }\n\n /**\n * Given a newly created AST node _n_, attach _n_ to a comment whitespace _w_ if applicable\n * {@see {@link CommentWhitespace}}\n */\n processComment(node: Node): void {\n const { commentStack } = this.state;\n const commentStackLength = commentStack.length;\n if (commentStackLength === 0) return;\n let i = commentStackLength - 1;\n const lastCommentWS = commentStack[i];\n\n if (lastCommentWS.start === node.end) {\n lastCommentWS.leadingNode = node;\n i--;\n }\n\n const { start: nodeStart } = node;\n // invariant: for all 0 <= j <= i, let c = commentStack[j], c must satisfy c.end < node.end\n for (; i >= 0; i--) {\n const commentWS = commentStack[i];\n const commentEnd = commentWS.end;\n if (commentEnd > nodeStart) {\n // by definition of commentWhiteSpace, this implies commentWS.start > nodeStart\n // so node can be a containingNode candidate. At this time we can finalize the comment\n // whitespace, because\n // 1) its leadingNode or trailingNode, if exists, will not change\n // 2) its containingNode have been assigned and will not change because it is the\n // innermost minimal-sized AST node\n commentWS.containingNode = node;\n this.finalizeComment(commentWS);\n commentStack.splice(i, 1);\n } else {\n if (commentEnd === nodeStart) {\n commentWS.trailingNode = node;\n }\n // stop the loop when commentEnd <= nodeStart\n break;\n }\n }\n }\n\n /**\n * Assign the comments of comment whitespaces to related AST nodes.\n * Also adjust innerComments following trailing comma.\n */\n finalizeComment(commentWS: CommentWhitespace) {\n const { comments } = commentWS;\n if (commentWS.leadingNode !== null || commentWS.trailingNode !== null) {\n if (commentWS.leadingNode !== null) {\n setTrailingComments(commentWS.leadingNode, comments);\n }\n if (commentWS.trailingNode !== null) {\n setLeadingComments(commentWS.trailingNode, comments);\n }\n } else {\n /*:: invariant(commentWS.containingNode !== null) */\n const node = commentWS.containingNode!;\n const commentStart = commentWS.start;\n if (\n this.input.charCodeAt(this.offsetToSourcePos(commentStart) - 1) ===\n charCodes.comma\n ) {\n // If a commentWhitespace follows a comma and the containingNode allows\n // list structures with trailing comma, merge it to the trailingComment\n // of the last non-null list element\n switch (node.type) {\n case \"ObjectExpression\":\n case \"ObjectPattern\":\n adjustInnerComments(node, node.properties, commentWS);\n break;\n case \"CallExpression\":\n case \"OptionalCallExpression\":\n adjustInnerComments(node, node.arguments, commentWS);\n break;\n case \"ImportExpression\":\n adjustInnerComments(\n node,\n [node.source, node.options ?? null],\n commentWS,\n );\n break;\n case \"FunctionDeclaration\":\n case \"FunctionExpression\":\n case \"ArrowFunctionExpression\":\n case \"ObjectMethod\":\n case \"ClassMethod\":\n case \"ClassPrivateMethod\":\n adjustInnerComments(node, node.params, commentWS);\n break;\n case \"ArrayExpression\":\n case \"ArrayPattern\":\n adjustInnerComments(node, node.elements, commentWS);\n break;\n case \"ExportNamedDeclaration\":\n case \"ImportDeclaration\":\n adjustInnerComments(node, node.specifiers, commentWS);\n break;\n case \"TSEnumDeclaration\":\n if (!process.env.BABEL_8_BREAKING) {\n adjustInnerComments(node, node.members!, commentWS);\n } else {\n setInnerComments(node, comments);\n }\n break;\n case \"TSEnumBody\":\n adjustInnerComments(node, node.members, commentWS);\n break;\n default: {\n if (!process.env.BABEL_8_BREAKING) {\n if (node.type === \"RecordExpression\") {\n adjustInnerComments(node, node.properties, commentWS);\n break;\n }\n if (node.type === \"TupleExpression\") {\n adjustInnerComments(node, node.elements, commentWS);\n break;\n }\n }\n setInnerComments(node, comments);\n }\n }\n } else {\n setInnerComments(node, comments);\n }\n }\n }\n\n /**\n * Drains remaining commentStack and applies finalizeComment\n * to each comment whitespace. Used only in parseExpression\n * where the top level AST node is _not_ Program\n * {@see {@link CommentsParser#finalizeComment}}\n */\n finalizeRemainingComments() {\n const { commentStack } = this.state;\n for (let i = commentStack.length - 1; i >= 0; i--) {\n this.finalizeComment(commentStack[i]);\n }\n this.state.commentStack = [];\n }\n\n /* eslint-disable no-irregular-whitespace */\n /**\n * Reset previous node trailing comments. Used in object / class\n * property parsing. We parse `async`, `static`, `set` and `get`\n * as an identifier but may reinterpret it into an async/static/accessor\n * method later. In this case the identifier is not part of the AST and we\n * should sync the knowledge to commentStacks\n *\n * For example, when parsing\n * ```\n * async /* 1 *​/ function f() {}\n * ```\n * the comment whitespace `/* 1 *​/` has leading node Identifier(async). When\n * we see the function token, we create a Function node and mark `/* 1 *​/` as\n * inner comments. So `/* 1 *​/` should be detached from the Identifier node.\n *\n * @param node the last finished AST node _before_ current token\n */\n /* eslint-enable no-irregular-whitespace */\n resetPreviousNodeTrailingComments(node: Node) {\n const { commentStack } = this.state;\n const { length } = commentStack;\n if (length === 0) return;\n const commentWS = commentStack[length - 1];\n if (commentWS.leadingNode === node) {\n commentWS.leadingNode = null;\n }\n }\n\n /**\n * Attach a node to the comment whitespaces right before/after\n * the given range.\n *\n * This is used to properly attach comments around parenthesized\n * expressions as leading/trailing comments of the inner expression.\n */\n takeSurroundingComments(node: Node, start: number, end: number) {\n const { commentStack } = this.state;\n const commentStackLength = commentStack.length;\n if (commentStackLength === 0) return;\n let i = commentStackLength - 1;\n\n for (; i >= 0; i--) {\n const commentWS = commentStack[i];\n const commentEnd = commentWS.end;\n const commentStart = commentWS.start;\n\n if (commentStart === end) {\n commentWS.leadingNode = node;\n } else if (commentEnd === start) {\n commentWS.trailingNode = node;\n } else if (commentEnd < start) {\n break;\n }\n }\n }\n}\n","import type { OptionsWithDefaults } from \"../options.ts\";\nimport type { CommentWhitespace } from \"../parser/comments\";\nimport { Position } from \"../util/location.ts\";\n\nimport { types as ct, type TokContext } from \"./context.ts\";\nimport { tt, type TokenType } from \"./types.ts\";\nimport type { Errors } from \"../parse-error.ts\";\nimport type { ParseError } from \"../parse-error.ts\";\n\nexport type DeferredStrictError =\n | typeof Errors.StrictNumericEscape\n | typeof Errors.StrictOctalLiteral;\n\ntype TopicContextState = {\n // When a topic binding has been currently established,\n // then this is 1. Otherwise, it is 0. This is forwards compatible\n // with a future plugin for multiple lexical topics.\n maxNumOfResolvableTopics: number;\n // When a topic binding has been currently established, and if that binding\n // has been used as a topic reference `#`, then this is 0. Otherwise, it is\n // `null`. This is forwards compatible with a future plugin for multiple\n // lexical topics.\n maxTopicIndex: null | 0;\n};\n\nexport const enum LoopLabelKind {\n Loop = 1,\n Switch = 2,\n}\n\ndeclare const bit: import(\"../../../../scripts/babel-plugin-bit-decorator/types.d.ts\").BitDecorator;\n\nexport default class State {\n @bit.storage flags: number = 0;\n\n @bit accessor strict = false;\n\n startIndex!: number;\n curLine!: number;\n lineStart!: number;\n\n // And, if locations are used, the {line, column} object\n // corresponding to those offsets\n startLoc!: Position;\n endLoc!: Position;\n\n init({\n strictMode,\n sourceType,\n startIndex,\n startLine,\n startColumn,\n }: OptionsWithDefaults): void {\n this.strict =\n strictMode === false\n ? false\n : strictMode === true\n ? true\n : sourceType === \"module\";\n\n this.startIndex = startIndex;\n this.curLine = startLine;\n this.lineStart = -startColumn;\n this.startLoc = this.endLoc = new Position(\n startLine,\n startColumn,\n startIndex,\n );\n }\n\n errors: ParseError[] = [];\n\n // Used to signify the start of a potential arrow function\n potentialArrowAt: number = -1;\n\n // Used to signify the start of an expression which looks like a\n // typed arrow function, but it isn't\n // e.g. a ? (b) : c => d\n // ^\n noArrowAt: number[] = [];\n\n // Used to signify the start of an expression whose params, if it looks like\n // an arrow function, shouldn't be converted to assignable nodes.\n // This is used to defer the validation of typed arrow functions inside\n // conditional expressions.\n // e.g. a ? (b) : c => d\n // ^\n noArrowParamsConversionAt: number[] = [];\n\n // Flags to track\n @bit accessor maybeInArrowParameters = false;\n @bit accessor inType = false;\n @bit accessor noAnonFunctionType = false;\n @bit accessor hasFlowComment = false;\n @bit accessor isAmbientContext = false;\n @bit accessor inAbstractClass = false;\n @bit accessor inDisallowConditionalTypesContext = false;\n\n // For the Hack-style pipelines plugin\n topicContext: TopicContextState = {\n maxNumOfResolvableTopics: 0,\n maxTopicIndex: null,\n };\n\n // For the F#-style pipelines plugin\n @bit accessor soloAwait = false;\n @bit accessor inFSharpPipelineDirectBody = false;\n\n // Labels in scope.\n labels: {\n kind: LoopLabelKind | null;\n name?: string | null;\n statementStart?: number;\n }[] = [];\n\n commentsLen = 0;\n // Comment attachment store\n commentStack: CommentWhitespace[] = [];\n\n // The current position of the tokenizer in the input.\n pos: number = 0;\n\n // Properties of the current token:\n // Its type\n type: TokenType = tt.eof;\n\n // For tokens that include more information than their type, the value\n value: any = null;\n\n // Its start and end offset\n start: number = 0;\n end: number = 0;\n\n // Position information for the previous token\n // this is initialized when generating the second token.\n lastTokEndLoc: Position | null = null;\n // this is initialized when generating the second token.\n lastTokStartLoc: Position | null = null;\n\n // The context stack is used to track whether the apostrophe \"`\" starts\n // or ends a string template\n context: TokContext[] = [ct.brace];\n\n // Used to track whether a JSX element is allowed to form\n @bit accessor canStartJSXElement = true;\n\n // Used to signal to callers of `readWord1` whether the word\n // contained any escape sequences. This is needed because words with\n // escape sequences must not be interpreted as keywords.\n @bit accessor containsEsc = false;\n\n // Used to track invalid escape sequences in template literals,\n // that must be reported if the template is not tagged.\n firstInvalidTemplateEscapePos: null | Position = null;\n\n @bit accessor hasTopLevelAwait = false;\n\n // This property is used to track the following errors\n // - StrictNumericEscape\n // - StrictOctalLiteral\n //\n // in a literal that occurs prior to/immediately after a \"use strict\" directive.\n\n // todo(JLHwung): set strictErrors to null and avoid recording string errors\n // after a non-directive is parsed\n strictErrors = new Map();\n\n // Tokens length in token store\n tokensLength: number = 0;\n\n /**\n * When we add a new property, we must manually update the `clone` method\n * @see State#clone\n */\n\n curPosition(): Position {\n return new Position(\n this.curLine,\n this.pos - this.lineStart,\n this.pos + this.startIndex,\n );\n }\n\n clone(): State {\n const state = new State();\n state.flags = this.flags;\n state.startIndex = this.startIndex;\n state.curLine = this.curLine;\n state.lineStart = this.lineStart;\n state.startLoc = this.startLoc;\n state.endLoc = this.endLoc;\n state.errors = this.errors.slice();\n state.potentialArrowAt = this.potentialArrowAt;\n state.noArrowAt = this.noArrowAt.slice();\n state.noArrowParamsConversionAt = this.noArrowParamsConversionAt.slice();\n state.topicContext = this.topicContext;\n state.labels = this.labels.slice();\n state.commentsLen = this.commentsLen;\n state.commentStack = this.commentStack.slice();\n state.pos = this.pos;\n state.type = this.type;\n state.value = this.value;\n state.start = this.start;\n state.end = this.end;\n state.lastTokEndLoc = this.lastTokEndLoc;\n state.lastTokStartLoc = this.lastTokStartLoc;\n state.context = this.context.slice();\n state.firstInvalidTemplateEscapePos = this.firstInvalidTemplateEscapePos;\n state.strictErrors = this.strictErrors;\n state.tokensLength = this.tokensLength;\n\n return state;\n }\n}\n\nexport type LookaheadState = {\n pos: number;\n value: any;\n type: TokenType;\n start: number;\n end: number;\n context: TokContext[];\n startLoc: Position;\n lastTokEndLoc: Position | null;\n curLine: number;\n lineStart: number;\n curPosition: State[\"curPosition\"];\n /* Used only in readToken_mult_modulo */\n inType: boolean;\n // These boolean properties are not initialized in createLookaheadState()\n // instead they will only be set by the tokenizer\n containsEsc?: boolean;\n};\n","// We inline this package\n// eslint-disable-next-line import/no-extraneous-dependencies\nimport * as charCodes from \"charcodes\";\n\n// The following character codes are forbidden from being\n// an immediate sibling of NumericLiteralSeparator _\nconst forbiddenNumericSeparatorSiblings = {\n decBinOct: new Set([\n charCodes.dot,\n charCodes.uppercaseB,\n charCodes.uppercaseE,\n charCodes.uppercaseO,\n charCodes.underscore, // multiple separators are not allowed\n charCodes.lowercaseB,\n charCodes.lowercaseE,\n charCodes.lowercaseO,\n ]),\n hex: new Set([\n charCodes.dot,\n charCodes.uppercaseX,\n charCodes.underscore, // multiple separators are not allowed\n charCodes.lowercaseX,\n ]),\n};\n\nconst isAllowedNumericSeparatorSibling = {\n // 0 - 1\n bin: (ch: number) => ch === charCodes.digit0 || ch === charCodes.digit1,\n\n // 0 - 7\n oct: (ch: number) => ch >= charCodes.digit0 && ch <= charCodes.digit7,\n\n // 0 - 9\n dec: (ch: number) => ch >= charCodes.digit0 && ch <= charCodes.digit9,\n\n // 0 - 9, A - F, a - f,\n hex: (ch: number) =>\n (ch >= charCodes.digit0 && ch <= charCodes.digit9) ||\n (ch >= charCodes.uppercaseA && ch <= charCodes.uppercaseF) ||\n (ch >= charCodes.lowercaseA && ch <= charCodes.lowercaseF),\n};\n\nexport type StringContentsErrorHandlers = EscapedCharErrorHandlers & {\n unterminated(\n initialPos: number,\n initialLineStart: number,\n initialCurLine: number,\n ): void;\n};\n\nexport function readStringContents(\n type: \"single\" | \"double\" | \"template\",\n input: string,\n pos: number,\n lineStart: number,\n curLine: number,\n errors: StringContentsErrorHandlers,\n) {\n const initialPos = pos;\n const initialLineStart = lineStart;\n const initialCurLine = curLine;\n\n let out = \"\";\n let firstInvalidLoc = null;\n let chunkStart = pos;\n const { length } = input;\n for (;;) {\n if (pos >= length) {\n errors.unterminated(initialPos, initialLineStart, initialCurLine);\n out += input.slice(chunkStart, pos);\n break;\n }\n const ch = input.charCodeAt(pos);\n if (isStringEnd(type, ch, input, pos)) {\n out += input.slice(chunkStart, pos);\n break;\n }\n if (ch === charCodes.backslash) {\n out += input.slice(chunkStart, pos);\n const res = readEscapedChar(\n input,\n pos,\n lineStart,\n curLine,\n type === \"template\",\n errors,\n );\n if (res.ch === null && !firstInvalidLoc) {\n firstInvalidLoc = { pos, lineStart, curLine };\n } else {\n out += res.ch;\n }\n ({ pos, lineStart, curLine } = res);\n chunkStart = pos;\n } else if (\n ch === charCodes.lineSeparator ||\n ch === charCodes.paragraphSeparator\n ) {\n ++pos;\n ++curLine;\n lineStart = pos;\n } else if (ch === charCodes.lineFeed || ch === charCodes.carriageReturn) {\n if (type === \"template\") {\n out += input.slice(chunkStart, pos) + \"\\n\";\n ++pos;\n if (\n ch === charCodes.carriageReturn &&\n input.charCodeAt(pos) === charCodes.lineFeed\n ) {\n ++pos;\n }\n ++curLine;\n chunkStart = lineStart = pos;\n } else {\n errors.unterminated(initialPos, initialLineStart, initialCurLine);\n }\n } else {\n ++pos;\n }\n }\n return process.env.BABEL_8_BREAKING\n ? { pos, str: out, firstInvalidLoc, lineStart, curLine }\n : {\n pos,\n str: out,\n firstInvalidLoc,\n lineStart,\n curLine,\n containsInvalid: !!firstInvalidLoc,\n };\n}\n\nfunction isStringEnd(\n type: \"single\" | \"double\" | \"template\",\n ch: number,\n input: string,\n pos: number,\n) {\n if (type === \"template\") {\n return (\n ch === charCodes.graveAccent ||\n (ch === charCodes.dollarSign &&\n input.charCodeAt(pos + 1) === charCodes.leftCurlyBrace)\n );\n }\n return (\n ch === (type === \"double\" ? charCodes.quotationMark : charCodes.apostrophe)\n );\n}\n\ntype EscapedCharErrorHandlers = HexCharErrorHandlers &\n CodePointErrorHandlers & {\n strictNumericEscape(pos: number, lineStart: number, curLine: number): void;\n };\n\nfunction readEscapedChar(\n input: string,\n pos: number,\n lineStart: number,\n curLine: number,\n inTemplate: boolean,\n errors: EscapedCharErrorHandlers,\n) {\n const throwOnInvalid = !inTemplate;\n pos++; // skip '\\'\n\n const res = (ch: string | null) => ({ pos, ch, lineStart, curLine });\n\n const ch = input.charCodeAt(pos++);\n switch (ch) {\n case charCodes.lowercaseN:\n return res(\"\\n\");\n case charCodes.lowercaseR:\n return res(\"\\r\");\n case charCodes.lowercaseX: {\n let code;\n ({ code, pos } = readHexChar(\n input,\n pos,\n lineStart,\n curLine,\n 2,\n false,\n throwOnInvalid,\n errors,\n ));\n return res(code === null ? null : String.fromCharCode(code));\n }\n case charCodes.lowercaseU: {\n let code;\n ({ code, pos } = readCodePoint(\n input,\n pos,\n lineStart,\n curLine,\n throwOnInvalid,\n errors,\n ));\n return res(code === null ? null : String.fromCodePoint(code));\n }\n case charCodes.lowercaseT:\n return res(\"\\t\");\n case charCodes.lowercaseB:\n return res(\"\\b\");\n case charCodes.lowercaseV:\n return res(\"\\u000b\");\n case charCodes.lowercaseF:\n return res(\"\\f\");\n case charCodes.carriageReturn:\n if (input.charCodeAt(pos) === charCodes.lineFeed) {\n ++pos;\n }\n // fall through\n case charCodes.lineFeed:\n lineStart = pos;\n ++curLine;\n // fall through\n case charCodes.lineSeparator:\n case charCodes.paragraphSeparator:\n return res(\"\");\n case charCodes.digit8:\n case charCodes.digit9:\n if (inTemplate) {\n return res(null);\n } else {\n errors.strictNumericEscape(pos - 1, lineStart, curLine);\n }\n // fall through\n default:\n if (ch >= charCodes.digit0 && ch <= charCodes.digit7) {\n const startPos = pos - 1;\n const match = /^[0-7]+/.exec(input.slice(startPos, pos + 2));\n\n let octalStr = match[0];\n\n let octal = parseInt(octalStr, 8);\n if (octal > 255) {\n octalStr = octalStr.slice(0, -1);\n octal = parseInt(octalStr, 8);\n }\n pos += octalStr.length - 1;\n const next = input.charCodeAt(pos);\n if (\n octalStr !== \"0\" ||\n next === charCodes.digit8 ||\n next === charCodes.digit9\n ) {\n if (inTemplate) {\n return res(null);\n } else {\n errors.strictNumericEscape(startPos, lineStart, curLine);\n }\n }\n\n return res(String.fromCharCode(octal));\n }\n\n return res(String.fromCharCode(ch));\n }\n}\n\ntype HexCharErrorHandlers = IntErrorHandlers & {\n invalidEscapeSequence(pos: number, lineStart: number, curLine: number): void;\n};\n\n// Used to read character escape sequences ('\\x', '\\u').\nfunction readHexChar(\n input: string,\n pos: number,\n lineStart: number,\n curLine: number,\n len: number,\n forceLen: boolean,\n throwOnInvalid: boolean,\n errors: HexCharErrorHandlers,\n) {\n const initialPos = pos;\n let n;\n ({ n, pos } = readInt(\n input,\n pos,\n lineStart,\n curLine,\n 16,\n len,\n forceLen,\n false,\n errors,\n /* bailOnError */ !throwOnInvalid,\n ));\n if (n === null) {\n if (throwOnInvalid) {\n errors.invalidEscapeSequence(initialPos, lineStart, curLine);\n } else {\n pos = initialPos - 1;\n }\n }\n return { code: n, pos };\n}\n\nexport type IntErrorHandlers = {\n numericSeparatorInEscapeSequence(\n pos: number,\n lineStart: number,\n curLine: number,\n ): void;\n unexpectedNumericSeparator(\n pos: number,\n lineStart: number,\n curLine: number,\n ): void;\n // It can return \"true\" to indicate that the error was handled\n // and the int parsing should continue.\n invalidDigit(\n pos: number,\n lineStart: number,\n curLine: number,\n radix: number,\n ): boolean;\n};\n\nexport function readInt(\n input: string,\n pos: number,\n lineStart: number,\n curLine: number,\n radix: number,\n len: number | undefined,\n forceLen: boolean,\n allowNumSeparator: boolean | \"bail\",\n errors: IntErrorHandlers,\n bailOnError: boolean,\n) {\n const start = pos;\n const forbiddenSiblings =\n radix === 16\n ? forbiddenNumericSeparatorSiblings.hex\n : forbiddenNumericSeparatorSiblings.decBinOct;\n const isAllowedSibling =\n radix === 16\n ? isAllowedNumericSeparatorSibling.hex\n : radix === 10\n ? isAllowedNumericSeparatorSibling.dec\n : radix === 8\n ? isAllowedNumericSeparatorSibling.oct\n : isAllowedNumericSeparatorSibling.bin;\n\n let invalid = false;\n let total = 0;\n\n for (let i = 0, e = len == null ? Infinity : len; i < e; ++i) {\n const code = input.charCodeAt(pos);\n let val;\n\n if (code === charCodes.underscore && allowNumSeparator !== \"bail\") {\n const prev = input.charCodeAt(pos - 1);\n const next = input.charCodeAt(pos + 1);\n\n if (!allowNumSeparator) {\n if (bailOnError) return { n: null, pos };\n errors.numericSeparatorInEscapeSequence(pos, lineStart, curLine);\n } else if (\n Number.isNaN(next) ||\n !isAllowedSibling(next) ||\n forbiddenSiblings.has(prev) ||\n forbiddenSiblings.has(next)\n ) {\n if (bailOnError) return { n: null, pos };\n errors.unexpectedNumericSeparator(pos, lineStart, curLine);\n }\n\n // Ignore this _ character\n ++pos;\n continue;\n }\n\n if (code >= charCodes.lowercaseA) {\n val = code - charCodes.lowercaseA + charCodes.lineFeed;\n } else if (code >= charCodes.uppercaseA) {\n val = code - charCodes.uppercaseA + charCodes.lineFeed;\n } else if (charCodes.isDigit(code)) {\n val = code - charCodes.digit0; // 0-9\n } else {\n val = Infinity;\n }\n if (val >= radix) {\n // If we found a digit which is too big, errors.invalidDigit can return true to avoid\n // breaking the loop (this is used for error recovery).\n if (val <= 9 && bailOnError) {\n return { n: null, pos };\n } else if (\n val <= 9 &&\n errors.invalidDigit(pos, lineStart, curLine, radix)\n ) {\n val = 0;\n } else if (forceLen) {\n val = 0;\n invalid = true;\n } else {\n break;\n }\n }\n ++pos;\n total = total * radix + val;\n }\n if (pos === start || (len != null && pos - start !== len) || invalid) {\n return { n: null, pos };\n }\n\n return { n: total, pos };\n}\n\nexport type CodePointErrorHandlers = HexCharErrorHandlers & {\n invalidCodePoint(pos: number, lineStart: number, curLine: number): void;\n};\n\nexport function readCodePoint(\n input: string,\n pos: number,\n lineStart: number,\n curLine: number,\n throwOnInvalid: boolean,\n errors: CodePointErrorHandlers,\n) {\n const ch = input.charCodeAt(pos);\n let code;\n\n if (ch === charCodes.leftCurlyBrace) {\n ++pos;\n ({ code, pos } = readHexChar(\n input,\n pos,\n lineStart,\n curLine,\n input.indexOf(\"}\", pos) - pos,\n true,\n throwOnInvalid,\n errors,\n ));\n ++pos;\n if (code !== null && code > 0x10ffff) {\n if (throwOnInvalid) {\n errors.invalidCodePoint(pos, lineStart, curLine);\n } else {\n return { code: null, pos };\n }\n }\n } else {\n ({ code, pos } = readHexChar(\n input,\n pos,\n lineStart,\n curLine,\n 4,\n false,\n throwOnInvalid,\n errors,\n ));\n }\n return { code, pos };\n}\n","/*:: declare var invariant; */\n\nimport type { OptionsWithDefaults } from \"../options.ts\";\nimport { OptionFlags } from \"../options.ts\";\nimport {\n Position,\n SourceLocation,\n createPositionWithColumnOffset,\n} from \"../util/location.ts\";\nimport CommentsParser, { type CommentWhitespace } from \"../parser/comments.ts\";\nimport type * as N from \"../types.ts\";\nimport * as charCodes from \"charcodes\";\nimport { isIdentifierStart, isIdentifierChar } from \"../util/identifier.ts\";\nimport {\n tokenIsKeyword,\n tokenLabelName,\n tt,\n keywords as keywordTypes,\n type TokenType,\n} from \"./types.ts\";\nimport type { TokContext } from \"./context.ts\";\nimport {\n Errors,\n type ParseError,\n type ParseErrorConstructor,\n} from \"../parse-error.ts\";\nimport {\n lineBreakG,\n isNewLine,\n isWhitespace,\n skipWhiteSpace,\n skipWhiteSpaceInLine,\n} from \"../util/whitespace.ts\";\nimport State from \"./state.ts\";\nimport type { LookaheadState, DeferredStrictError } from \"./state.ts\";\nimport type { Undone } from \"../parser/node.ts\";\nimport type { Node } from \"../types.ts\";\n\nimport {\n readInt,\n readCodePoint,\n readStringContents,\n type IntErrorHandlers,\n type CodePointErrorHandlers,\n type StringContentsErrorHandlers,\n} from \"@babel/helper-string-parser\";\n\nimport type { Plugin } from \"../typings.ts\";\n\nfunction buildPosition(pos: number, lineStart: number, curLine: number) {\n return new Position(curLine, pos - lineStart, pos);\n}\n\nconst VALID_REGEX_FLAGS = new Set([\n charCodes.lowercaseG,\n charCodes.lowercaseM,\n charCodes.lowercaseS,\n charCodes.lowercaseI,\n charCodes.lowercaseY,\n charCodes.lowercaseU,\n charCodes.lowercaseD,\n charCodes.lowercaseV,\n]);\n\n// Object type used to represent tokens. Note that normally, tokens\n// simply exist as properties on the parser object. This is only\n// used for the onToken callback and the external tokenizer.\n\nexport class Token {\n constructor(state: State) {\n const startIndex = state.startIndex || 0;\n this.type = state.type;\n this.value = state.value;\n this.start = startIndex + state.start;\n this.end = startIndex + state.end;\n this.loc = new SourceLocation(state.startLoc, state.endLoc);\n }\n\n declare type: TokenType;\n declare value: any;\n declare start: number;\n declare end: number;\n declare loc: SourceLocation;\n}\n\n// ## Tokenizer\n\nexport default abstract class Tokenizer extends CommentsParser {\n isLookahead: boolean;\n\n // Token store.\n tokens: (Token | N.Comment)[] = [];\n\n constructor(options: OptionsWithDefaults, input: string) {\n super();\n this.state = new State();\n this.state.init(options);\n this.input = input;\n this.length = input.length;\n this.comments = [];\n this.isLookahead = false;\n }\n\n pushToken(token: Token | N.Comment) {\n // Pop out invalid tokens trapped by try-catch parsing.\n // Those parsing branches are mainly created by typescript and flow plugins.\n this.tokens.length = this.state.tokensLength;\n this.tokens.push(token);\n ++this.state.tokensLength;\n }\n\n // Move to the next token\n\n next(): void {\n this.checkKeywordEscapes();\n if (this.optionFlags & OptionFlags.Tokens) {\n this.pushToken(new Token(this.state));\n }\n\n this.state.lastTokEndLoc = this.state.endLoc;\n this.state.lastTokStartLoc = this.state.startLoc;\n this.nextToken();\n }\n\n eat(type: TokenType): boolean {\n if (this.match(type)) {\n this.next();\n return true;\n } else {\n return false;\n }\n }\n\n /**\n * Whether current token matches given type\n */\n match(type: TokenType): boolean {\n return this.state.type === type;\n }\n\n /**\n * Create a LookaheadState from current parser state\n */\n createLookaheadState(state: State): LookaheadState {\n return {\n pos: state.pos,\n value: null,\n type: state.type,\n start: state.start,\n end: state.end,\n context: [this.curContext()],\n inType: state.inType,\n startLoc: state.startLoc,\n lastTokEndLoc: state.lastTokEndLoc,\n curLine: state.curLine,\n lineStart: state.lineStart,\n curPosition: state.curPosition,\n };\n }\n\n /**\n * lookahead peeks the next token, skipping changes to token context and\n * comment stack. For performance it returns a limited LookaheadState\n * instead of full parser state.\n *\n * The { column, line } Loc info is not included in lookahead since such usage\n * is rare. Although it may return other location properties e.g. `curLine` and\n * `lineStart`, these properties are not listed in the LookaheadState interface\n * and thus the returned value is _NOT_ reliable.\n *\n * The tokenizer should make best efforts to avoid using any parser state\n * other than those defined in LookaheadState\n */\n lookahead(): LookaheadState {\n const old = this.state;\n // @ts-expect-error For performance we use a simplified tokenizer state structure\n this.state = this.createLookaheadState(old);\n\n this.isLookahead = true;\n this.nextToken();\n this.isLookahead = false;\n\n const curr = this.state;\n this.state = old;\n return curr;\n }\n\n nextTokenStart(): number {\n return this.nextTokenStartSince(this.state.pos);\n }\n\n nextTokenStartSince(pos: number): number {\n skipWhiteSpace.lastIndex = pos;\n return skipWhiteSpace.test(this.input) ? skipWhiteSpace.lastIndex : pos;\n }\n\n lookaheadCharCode(): number {\n return this.lookaheadCharCodeSince(this.state.pos);\n }\n\n lookaheadCharCodeSince(pos: number): number {\n return this.input.charCodeAt(this.nextTokenStartSince(pos));\n }\n\n /**\n * Similar to nextToken, but it will stop at line break when it is seen before the next token\n *\n * @returns {number} position of the next token start or line break, whichever is seen first.\n * @memberof Tokenizer\n */\n nextTokenInLineStart(): number {\n return this.nextTokenInLineStartSince(this.state.pos);\n }\n\n nextTokenInLineStartSince(pos: number): number {\n skipWhiteSpaceInLine.lastIndex = pos;\n return skipWhiteSpaceInLine.test(this.input)\n ? skipWhiteSpaceInLine.lastIndex\n : pos;\n }\n\n /**\n * Similar to lookaheadCharCode, but it will return the char code of line break if it is\n * seen before the next token\n *\n * @returns {number} char code of the next token start or line break, whichever is seen first.\n * @memberof Tokenizer\n */\n lookaheadInLineCharCode(): number {\n return this.input.charCodeAt(this.nextTokenInLineStart());\n }\n\n codePointAtPos(pos: number): number {\n // The implementation is based on\n // https://source.chromium.org/chromium/chromium/src/+/master:v8/src/builtins/builtins-string-gen.cc;l=1455;drc=221e331b49dfefadbc6fa40b0c68e6f97606d0b3;bpv=0;bpt=1\n // We reimplement `codePointAt` because `codePointAt` is a V8 builtin which is not inlined by TurboFan (as of M91)\n // since `input` is mostly ASCII, an inlined `charCodeAt` wins here\n let cp = this.input.charCodeAt(pos);\n if ((cp & 0xfc00) === 0xd800 && ++pos < this.input.length) {\n const trail = this.input.charCodeAt(pos);\n if ((trail & 0xfc00) === 0xdc00) {\n cp = 0x10000 + ((cp & 0x3ff) << 10) + (trail & 0x3ff);\n }\n }\n return cp;\n }\n\n // Toggle strict mode. Re-reads the next number or string to please\n // pedantic tests (`\"use strict\"; 010;` should fail).\n\n setStrict(strict: boolean): void {\n this.state.strict = strict;\n if (strict) {\n // Throw an error for any string decimal escape found before/immediately\n // after a \"use strict\" directive. Strict mode will be set at parse\n // time for any literals that occur after the next node of the strict\n // directive.\n this.state.strictErrors.forEach(([toParseError, at]) =>\n this.raise(toParseError, at),\n );\n this.state.strictErrors.clear();\n }\n }\n\n curContext(): TokContext {\n return this.state.context[this.state.context.length - 1];\n }\n\n // Read a single token, updating the parser object's token-related properties.\n nextToken(): void {\n this.skipSpace();\n this.state.start = this.state.pos;\n if (!this.isLookahead) this.state.startLoc = this.state.curPosition();\n if (this.state.pos >= this.length) {\n this.finishToken(tt.eof);\n return;\n }\n\n this.getTokenFromCode(this.codePointAtPos(this.state.pos));\n }\n\n // Skips a block comment, whose end is marked by commentEnd.\n // *-/ is used by the Flow plugin, when parsing block comments nested\n // inside Flow comments.\n skipBlockComment(commentEnd: \"*/\" | \"*-/\"): N.CommentBlock | undefined {\n let startLoc;\n if (!this.isLookahead) startLoc = this.state.curPosition();\n const start = this.state.pos;\n const end = this.input.indexOf(commentEnd, start + 2);\n if (end === -1) {\n // We have to call this again here because startLoc may not be set...\n // This seems to be for performance reasons:\n // https://github.com/babel/babel/commit/acf2a10899f696a8aaf34df78bf9725b5ea7f2da\n throw this.raise(Errors.UnterminatedComment, this.state.curPosition());\n }\n\n this.state.pos = end + commentEnd.length;\n lineBreakG.lastIndex = start + 2;\n while (lineBreakG.test(this.input) && lineBreakG.lastIndex <= end) {\n ++this.state.curLine;\n this.state.lineStart = lineBreakG.lastIndex;\n }\n\n // If we are doing a lookahead right now we need to advance the position (above code)\n // but we do not want to push the comment to the state.\n if (this.isLookahead) return;\n /*:: invariant(startLoc) */\n\n const comment: N.CommentBlock = {\n type: \"CommentBlock\",\n value: this.input.slice(start + 2, end),\n start: this.sourceToOffsetPos(start),\n end: this.sourceToOffsetPos(end + commentEnd.length),\n // eslint-disable-next-line @typescript-eslint/no-unnecessary-type-assertion\n loc: new SourceLocation(startLoc!, this.state.curPosition()),\n };\n if (this.optionFlags & OptionFlags.Tokens) this.pushToken(comment);\n return comment;\n }\n\n skipLineComment(startSkip: number): N.CommentLine | undefined {\n const start = this.state.pos;\n let startLoc;\n if (!this.isLookahead) startLoc = this.state.curPosition();\n let ch = this.input.charCodeAt((this.state.pos += startSkip));\n if (this.state.pos < this.length) {\n while (!isNewLine(ch) && ++this.state.pos < this.length) {\n ch = this.input.charCodeAt(this.state.pos);\n }\n }\n\n // If we are doing a lookahead right now we need to advance the position (above code)\n // but we do not want to push the comment to the state.\n if (this.isLookahead) return;\n\n const end = this.state.pos;\n const value = this.input.slice(start + startSkip, end);\n\n const comment: N.CommentLine = {\n type: \"CommentLine\",\n value,\n start: this.sourceToOffsetPos(start),\n end: this.sourceToOffsetPos(end),\n // eslint-disable-next-line @typescript-eslint/no-unnecessary-type-assertion\n loc: new SourceLocation(startLoc!, this.state.curPosition()),\n };\n if (this.optionFlags & OptionFlags.Tokens) this.pushToken(comment);\n return comment;\n }\n\n // Called at the start of the parse and after every token. Skips\n // whitespace and comments, and.\n\n skipSpace(): void {\n const spaceStart = this.state.pos;\n const comments: N.Comment[] | null =\n this.optionFlags & OptionFlags.AttachComment ? [] : null;\n loop: while (this.state.pos < this.length) {\n const ch = this.input.charCodeAt(this.state.pos);\n switch (ch) {\n case charCodes.space:\n case charCodes.nonBreakingSpace:\n case charCodes.tab:\n ++this.state.pos;\n break;\n case charCodes.carriageReturn:\n if (\n this.input.charCodeAt(this.state.pos + 1) === charCodes.lineFeed\n ) {\n ++this.state.pos;\n }\n // fall through\n case charCodes.lineFeed:\n case charCodes.lineSeparator:\n case charCodes.paragraphSeparator:\n ++this.state.pos;\n ++this.state.curLine;\n this.state.lineStart = this.state.pos;\n break;\n\n case charCodes.slash:\n switch (this.input.charCodeAt(this.state.pos + 1)) {\n case charCodes.asterisk: {\n const comment = this.skipBlockComment(\"*/\");\n if (comment !== undefined) {\n this.addComment(comment);\n comments?.push(comment);\n }\n break;\n }\n\n case charCodes.slash: {\n const comment = this.skipLineComment(2);\n if (comment !== undefined) {\n this.addComment(comment);\n comments?.push(comment);\n }\n break;\n }\n\n default:\n break loop;\n }\n break;\n\n default:\n if (isWhitespace(ch)) {\n ++this.state.pos;\n } else if (\n ch === charCodes.dash &&\n !this.inModule &&\n this.optionFlags & OptionFlags.AnnexB\n ) {\n const pos = this.state.pos;\n if (\n this.input.charCodeAt(pos + 1) === charCodes.dash &&\n this.input.charCodeAt(pos + 2) === charCodes.greaterThan &&\n (spaceStart === 0 || this.state.lineStart > spaceStart)\n ) {\n // A `-->` line comment\n const comment = this.skipLineComment(3);\n if (comment !== undefined) {\n this.addComment(comment);\n comments?.push(comment);\n }\n } else {\n break loop;\n }\n } else if (\n ch === charCodes.lessThan &&\n !this.inModule &&\n this.optionFlags & OptionFlags.AnnexB\n ) {\n const pos = this.state.pos;\n if (\n this.input.charCodeAt(pos + 1) === charCodes.exclamationMark &&\n this.input.charCodeAt(pos + 2) === charCodes.dash &&\n this.input.charCodeAt(pos + 3) === charCodes.dash\n ) {\n // `