diff --git "a/src/node_modules/@babel/parser/lib/index.js" "b/src/node_modules/@babel/parser/lib/index.js" new file mode 100644--- /dev/null +++ "b/src/node_modules/@babel/parser/lib/index.js" @@ -0,0 +1,14384 @@ +'use strict'; + +Object.defineProperty(exports, '__esModule', { + value: true +}); +function _objectWithoutPropertiesLoose(source, excluded) { + if (source == null) return {}; + var target = {}; + var sourceKeys = Object.keys(source); + var key, i; + for (i = 0; i < sourceKeys.length; i++) { + key = sourceKeys[i]; + if (excluded.indexOf(key) >= 0) continue; + target[key] = source[key]; + } + return target; +} +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); +} +var ParseErrorCode = { + SyntaxError: "BABEL_PARSER_SYNTAX_ERROR", + SourceTypeModuleError: "BABEL_PARSER_SOURCETYPE_MODULE_REQUIRED" +}; +const reflect = (keys, last = keys.length - 1) => ({ + get() { + return keys.reduce((object, key) => object[key], this); + }, + set(value) { + keys.reduce((item, key, i) => i === last ? item[key] = value : item[key], this); + } +}); +const instantiate = (constructor, properties, descriptors) => Object.keys(descriptors).map(key => [key, descriptors[key]]).filter(([, descriptor]) => !!descriptor).map(([key, descriptor]) => [key, typeof descriptor === "function" ? { + value: descriptor, + enumerable: false +} : typeof descriptor.reflect === "string" ? Object.assign({}, descriptor, reflect(descriptor.reflect.split("."))) : descriptor]).reduce((instance, [key, descriptor]) => Object.defineProperty(instance, key, Object.assign({ + configurable: true +}, descriptor)), Object.assign(new constructor(), properties)); +var ModuleErrors = { + ImportMetaOutsideModule: { + message: `import.meta may appear only with 'sourceType: "module"'`, + code: ParseErrorCode.SourceTypeModuleError + }, + ImportOutsideModule: { + message: `'import' and 'export' may appear only with 'sourceType: "module"'`, + code: ParseErrorCode.SourceTypeModuleError + } +}; +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 = ({ + type, + prefix +}) => type === "UpdateExpression" ? NodeDescriptions.UpdateExpression[String(prefix)] : NodeDescriptions[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.", + AwaitNotInAsyncFunction: "'await' is only allowed within async functions.", + 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 ${kind} declaration.`, + DecoratorArgumentsOutsideParentheses: "Decorator arguments must be moved inside parentheses: use '@(decorator(args))' instead of '@(decorator)(args)'.", + DecoratorBeforeExport: "Decorators must be placed *before* the 'export' keyword. Remove the 'decoratorsBeforeExport: true' option to use the 'export @decorator class {}' syntax.", + DecoratorsBeforeAfterExport: "Decorators can be placed *either* before or after the 'export' keyword, but not in both locations at the same time.", + DecoratorConstructor: "Decorators can't be used with a constructor. Did you mean '@dec class { ... }'?", + DecoratorExportClass: "Decorators must be placed *after* the 'export' keyword. Remove the 'decoratorsBeforeExport: false' option to use the '@decorator export class {}' syntax.", + DecoratorSemicolon: "Decorators must not be followed by a semicolon.", + DecoratorStaticBlock: "Decorators can't be used with a static block.", + DeletePrivateField: "Deleting a private field is not allowed.", + DestructureNamedImport: "ES2015 named imports do not destructure. Use another statement for destructuring after the import.", + DuplicateConstructor: "Duplicate constructor in the same class.", + DuplicateDefaultExport: "Only one default export allowed per module.", + DuplicateExport: ({ + exportName + }) => `\`${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 ${type === "BreakStatement" ? "break" : "continue"}.`, + IllegalLanguageModeDirective: "Illegal 'use strict' directive in function with non-simple parameter list.", + IllegalReturn: "'return' outside of function.", + ImportAttributesUseAssert: "The `assert` keyword in import attributes is deprecated and it has been replaced by the `with` keyword. You can enable the `deprecatedAssertSyntax: true` option in the import attributes plugin to suppress this error.", + ImportBindingIsString: ({ + importName + }) => `A string literal cannot be used as an imported binding.\n- Did you mean \`import { "${importName}" as foo }\`?`, + ImportCallArgumentTrailingComma: "Trailing comma is disallowed inside import(...) arguments.", + ImportCallArity: ({ + maxArgumentCount + }) => `\`import()\` requires exactly ${maxArgumentCount === 1 ? "one argument" : "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.", + 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 ${toNodeDescription(ancestor)}.`, + InvalidNumber: "Invalid number.", + InvalidOrMissingExponent: "Floating-point numbers require a valid exponent after the 'e'.", + InvalidOrUnexpectedToken: ({ + unexpected + }) => `Unexpected character '${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 not allowed to be used as a name in 'let' or 'const' declarations.", + LineTerminatorBeforeArrow: "No line break is allowed before '=>'.", + MalformedRegExpFlags: "Invalid regular expression flag.", + MissingClassName: "A class name is required.", + MissingEqInAssignment: "Only '=' operator can be used for specifying default value.", + MissingSemicolon: "Missing semicolon.", + 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.", + 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`.", + 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.", + UsingDeclarationHasBindingPattern: "Using declaration cannot have destructuring patterns.", + VarRedeclaration: ({ + identifierName + }) => `Identifier '${identifierName}' has already been declared.`, + YieldBindingIdentifier: "Can not use 'yield' as identifier inside a generator.", + YieldInParameter: "Yield expression is not allowed in formal parameters.", + ZeroDigitNumericSeparator: "Numeric separator can not be used after leading 0." +}; +var StrictModeErrors = { + StrictDelete: "Deleting local variable in strict mode.", + StrictEvalArguments: ({ + referenceName + }) => `Assigning to '${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." +}; +const UnparenthesizedPipeBodyDescriptions = new Set(["ArrowFunctionExpression", "AssignmentExpression", "ConditionalExpression", "YieldExpression"]); +var PipelineOperatorErrors = { + 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$1 = ["toMessage"], + _excluded2$1 = ["message"]; +function toParseErrorConstructor(_ref) { + let { + toMessage + } = _ref, + properties = _objectWithoutPropertiesLoose(_ref, _excluded$1); + return function constructor({ + loc, + details + }) { + return instantiate(SyntaxError, Object.assign({}, properties, { + loc + }), { + clone(overrides = {}) { + const loc = overrides.loc || {}; + return constructor({ + loc: new Position("line" in loc ? loc.line : this.loc.line, "column" in loc ? loc.column : this.loc.column, "index" in loc ? loc.index : this.loc.index), + details: Object.assign({}, this.details, overrides.details) + }); + }, + details: { + value: details, + enumerable: false + }, + message: { + get() { + return `${toMessage(this.details)} (${this.loc.line}:${this.loc.column})`; + }, + set(value) { + Object.defineProperty(this, "message", { + value + }); + } + }, + pos: { + reflect: "loc.index", + enumerable: true + }, + missingPlugin: "missingPlugin" in details && { + reflect: "details.missingPlugin", + enumerable: true + } + }); + }; +} +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 _ref2 = typeof template === "string" ? { + message: () => template + } : typeof template === "function" ? { + message: template + } : template, + { + message + } = _ref2, + rest = _objectWithoutPropertiesLoose(_ref2, _excluded2$1); + const toMessage = typeof message === "string" ? () => message : message; + ParseErrorConstructors[reasonCode] = toParseErrorConstructor(Object.assign({ + code: ParseErrorCode.SyntaxError, + reasonCode, + toMessage + }, syntaxPlugin ? { + syntaxPlugin + } : {}, rest)); + } + return ParseErrorConstructors; +} +const Errors = Object.assign({}, ParseErrorEnum(ModuleErrors), ParseErrorEnum(StandardErrors), ParseErrorEnum(StrictModeErrors), ParseErrorEnum`pipelineOperator`(PipelineOperatorErrors)); +const { + defineProperty +} = Object; +const toUnenumerable = (object, key) => defineProperty(object, key, { + enumerable: false, + value: object[key] +}); +function toESTreeLocation(node) { + node.loc.start && toUnenumerable(node.loc.start, "index"); + node.loc.end && toUnenumerable(node.loc.end, "index"); + return node; +} +var estree = superClass => class ESTreeParserMixin extends superClass { + parse() { + const file = toESTreeLocation(super.parse()); + if (this.options.tokens) { + file.tokens = file.tokens.map(toESTreeLocation); + } + return file; + } + parseRegExpLiteral({ + pattern, + flags + }) { + let regex = null; + try { + regex = new RegExp(pattern, flags); + } catch (e) {} + const node = this.estreeParseLiteral(regex); + node.regex = { + pattern, + flags + }; + return node; + } + parseBigIntLiteral(value) { + let bigInt; + try { + bigInt = BigInt(value); + } catch (_unused) { + bigInt = null; + } + const node = this.estreeParseLiteral(bigInt); + node.bigint = String(node.value || value); + return node; + } + parseDecimalLiteral(value) { + const decimal = null; + const node = this.estreeParseLiteral(decimal); + node.decimal = String(node.value || value); + return node; + } + estreeParseLiteral(value) { + return this.parseLiteral(value, "Literal"); + } + parseStringLiteral(value) { + return this.estreeParseLiteral(value); + } + parseNumericLiteral(value) { + return this.estreeParseLiteral(value); + } + parseNullLiteral() { + return this.estreeParseLiteral(null); + } + parseBooleanLiteral(value) { + return this.estreeParseLiteral(value); + } + directiveToStmt(directive) { + const expression = directive.value; + delete directive.value; + expression.type = "Literal"; + expression.raw = expression.extra.raw; + expression.value = expression.extra.expressionValue; + const stmt = directive; + stmt.type = "ExpressionStatement"; + stmt.expression = expression; + stmt.directive = expression.extra.rawValue; + delete expression.extra; + return stmt; + } + 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; + } + pushClassMethod(classBody, method, isGenerator, isAsync, isConstructor, allowsDirectSuper) { + this.parseMethod(method, isGenerator, isAsync, isConstructor, allowsDirectSuper, "ClassMethod", true); + if (method.typeParameters) { + method.value.typeParameters = method.typeParameters; + delete method.typeParameters; + } + classBody.body.push(method); + } + parsePrivateName() { + const node = super.parsePrivateName(); + { + if (!this.getPluginOption("estree", "classFeatures")) { + return node; + } + } + return this.convertPrivateNameToPrivateIdentifier(node); + } + convertPrivateNameToPrivateIdentifier(node) { + const name = super.getPrivateNameSV(node); + node = node; + delete node.id; + node.name = name; + node.type = "PrivateIdentifier"; + return node; + } + isPrivateName(node) { + { + if (!this.getPluginOption("estree", "classFeatures")) { + return super.isPrivateName(node); + } + } + return node.type === "PrivateIdentifier"; + } + getPrivateNameSV(node) { + { + if (!this.getPluginOption("estree", "classFeatures")) { + return super.getPrivateNameSV(node); + } + } + return node.name; + } + parseLiteral(value, type) { + const node = super.parseLiteral(value, type); + node.raw = node.extra.raw; + delete node.extra; + return node; + } + parseFunctionBody(node, allowExpression, isMethod = false) { + super.parseFunctionBody(node, allowExpression, isMethod); + node.expression = node.body.type !== "BlockStatement"; + } + parseMethod(node, isGenerator, isAsync, isConstructor, allowDirectSuper, type, inClassScope = false) { + let funcNode = this.startNode(); + funcNode.kind = node.kind; + funcNode = super.parseMethod(funcNode, isGenerator, isAsync, isConstructor, allowDirectSuper, type, inClassScope); + funcNode.type = "FunctionExpression"; + delete funcNode.kind; + node.value = funcNode; + if (type === "ClassPrivateMethod") { + node.computed = false; + } + return this.finishNode(node, "MethodDefinition"); + } + parseClassProperty(...args) { + const propertyNode = super.parseClassProperty(...args); + { + if (!this.getPluginOption("estree", "classFeatures")) { + return propertyNode; + } + } + propertyNode.type = "PropertyDefinition"; + return propertyNode; + } + parseClassPrivateProperty(...args) { + const propertyNode = super.parseClassPrivateProperty(...args); + { + if (!this.getPluginOption("estree", "classFeatures")) { + return propertyNode; + } + } + propertyNode.type = "PropertyDefinition"; + propertyNode.computed = false; + return propertyNode; + } + parseObjectMethod(prop, isGenerator, isAsync, isPattern, isAccessor) { + const node = super.parseObjectMethod(prop, isGenerator, isAsync, isPattern, isAccessor); + if (node) { + node.type = "Property"; + if (node.kind === "method") { + node.kind = "init"; + } + node.shorthand = false; + } + return node; + } + parseObjectProperty(prop, startLoc, isPattern, refExpressionErrors) { + const node = super.parseObjectProperty(prop, startLoc, isPattern, refExpressionErrors); + if (node) { + node.kind = "init"; + node.type = "Property"; + } + return node; + } + isValidLVal(type, isUnparenthesizedInAssign, binding) { + return type === "Property" ? "value" : super.isValidLVal(type, 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.kind === "get" || prop.kind === "set") { + this.raise(Errors.PatternHasAccessor, { + at: prop.key + }); + } else if (prop.method) { + this.raise(Errors.PatternHasMethod, { + at: prop.key + }); + } else { + super.toAssignableObjectExpressionProp(prop, isLast, isLHS); + } + } + finishCallExpression(unfinished, optional) { + const node = super.finishCallExpression(unfinished, optional); + if (node.callee.type === "Import") { + node.type = "ImportExpression"; + node.source = node.arguments[0]; + if (this.hasPlugin("importAttributes") || this.hasPlugin("importAssertions")) { + var _node$arguments$; + node.attributes = (_node$arguments$ = node.arguments[1]) != null ? _node$arguments$ : null; + } + delete node.arguments; + delete node.callee; + } + return node; + } + toReferencedArguments(node) { + if (node.type === "ImportExpression") { + return; + } + super.toReferencedArguments(node); + } + parseExport(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") { + node.type = "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; + } + parseSubscript(base, startLoc, noCalls, state) { + const node = super.parseSubscript(base, startLoc, noCalls, state); + if (state.optionalChainMember) { + if (node.type === "OptionalMemberExpression" || node.type === "OptionalCallExpression") { + node.type = node.type.substring(8); + } + if (state.stop) { + const chain = this.startNodeAtNode(node); + chain.expression = node; + return this.finishNode(chain, "ChainExpression"); + } + } else if (node.type === "MemberExpression" || node.type === "CallExpression") { + node.optional = false; + } + return node; + } + hasPropertyAsPrivateName(node) { + if (node.type === "ChainExpression") { + node = node.expression; + } + return super.hasPropertyAsPrivateName(node); + } + isObjectProperty(node) { + return node.type === "Property" && node.kind === "init" && !node.method; + } + isObjectMethod(node) { + return node.method || node.kind === "get" || node.kind === "set"; + } + finishNodeAt(node, type, endLoc) { + return toESTreeLocation(super.finishNodeAt(node, type, endLoc)); + } + 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 + }), + _from: createKeywordLike("from", { + startsExpr + }), + _get: createKeywordLike("get", { + startsExpr + }), + _let: createKeywordLike("let", { + startsExpr + }), + _meta: createKeywordLike("meta", { + startsExpr + }), + _of: createKeywordLike("of", { + startsExpr + }), + _sent: createKeywordLike("sent", { + startsExpr + }), + _set: createKeywordLike("set", { + startsExpr + }), + _static: createKeywordLike("static", { + startsExpr + }), + _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 + }), + string: createToken("string", { + startsExpr + }), + num: createToken("num", { + startsExpr + }), + bigint: createToken("bigint", { + startsExpr + }), + decimal: createToken("decimal", { + startsExpr + }), + regexp: createToken("regexp", { + startsExpr + }), + privateName: createToken("#name", { + startsExpr + }), + eof: createToken("eof"), + jsxName: createToken("jsxName"), + jsxText: createToken("jsxText", { + beforeExpr: true + }), + jsxTagStart: createToken("jsxTagStart", { + startsExpr: true + }), + jsxTagEnd: createToken("jsxTagEnd"), + placeholder: createToken("%%", { + startsExpr: true + }) +}; +function tokenIsIdentifier(token) { + return token >= 93 && token <= 130; +} +function tokenKeywordOrIdentifierIsKeyword(token) { + return token <= 92; +} +function tokenIsKeywordOrIdentifier(token) { + return token >= 58 && token <= 130; +} +function tokenIsLiteralPropertyName(token) { + return token >= 58 && token <= 134; +} +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 >= 127 && token <= 129; +} +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 >= 119 && token <= 121; +} +function tokenIsTSDeclarationStart(token) { + return token >= 122 && token <= 128; +} +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[140].updateContext = context => { + context.push(types.j_expr, types.j_oTag); + }; +} +let nonASCIIidentifierStartChars = 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+let nonASCIIidentifierChars = "\u200c\u200d\xb7\u0300-\u036f\u0387\u0483-\u0487\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u0669\u0670\u06d6-\u06dc\u06df-\u06e4\u06e7\u06e8\u06ea-\u06ed\u06f0-\u06f9\u0711\u0730-\u074a\u07a6-\u07b0\u07c0-\u07c9\u07eb-\u07f3\u07fd\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0859-\u085b\u0898-\u089f\u08ca-\u08e1\u08e3-\u0903\u093a-\u093c\u093e-\u094f\u0951-\u0957\u0962\u0963\u0966-\u096f\u0981-\u0983\u09bc\u09be-\u09c4\u09c7\u09c8\u09cb-\u09cd\u09d7\u09e2\u09e3\u09e6-\u09ef\u09fe\u0a01-\u0a03\u0a3c\u0a3e-\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a66-\u0a71\u0a75\u0a81-\u0a83\u0abc\u0abe-\u0ac5\u0ac7-\u0ac9\u0acb-\u0acd\u0ae2\u0ae3\u0ae6-\u0aef\u0afa-\u0aff\u0b01-\u0b03\u0b3c\u0b3e-\u0b44\u0b47\u0b48\u0b4b-\u0b4d\u0b55-\u0b57\u0b62\u0b63\u0b66-\u0b6f\u0b82\u0bbe-\u0bc2\u0bc6-\u0bc8\u0bca-\u0bcd\u0bd7\u0be6-\u0bef\u0c00-\u0c04\u0c3c\u0c3e-\u0c44\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0c66-\u0c6f\u0c81-\u0c83\u0cbc\u0cbe-\u0cc4\u0cc6-\u0cc8\u0cca-\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0ce6-\u0cef\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-\u1ace\u1b00-\u1b04\u1b34-\u1b44\u1b50-\u1b59\u1b6b-\u1b73\u1b80-\u1b82\u1ba1-\u1bad\u1bb0-\u1bb9\u1be6-\u1bf3\u1c24-\u1c37\u1c40-\u1c49\u1c50-\u1c59\u1cd0-\u1cd2\u1cd4-\u1ce8\u1ced\u1cf4\u1cf7-\u1cf9\u1dc0-\u1dff\u203f\u2040\u2054\u20d0-\u20dc\u20e1\u20e5-\u20f0\u2cef-\u2cf1\u2d7f\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua620-\ua629\ua66f\ua674-\ua67d\ua69e\ua69f\ua6f0\ua6f1\ua802\ua806\ua80b\ua823-\ua827\ua82c\ua880\ua881\ua8b4-\ua8c5\ua8d0-\ua8d9\ua8e0-\ua8f1\ua8ff-\ua909\ua926-\ua92d\ua947-\ua953\ua980-\ua983\ua9b3-\ua9c0\ua9d0-\ua9d9\ua9e5\ua9f0-\ua9f9\uaa29-\uaa36\uaa43\uaa4c\uaa4d\uaa50-\uaa59\uaa7b-\uaa7d\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uaaeb-\uaaef\uaaf5\uaaf6\uabe3-\uabea\uabec\uabed\uabf0-\uabf9\ufb1e\ufe00-\ufe0f\ufe20-\ufe2f\ufe33\ufe34\ufe4d-\ufe4f\uff10-\uff19\uff3f"; +const nonASCIIidentifierStart = new RegExp("[" + nonASCIIidentifierStartChars + "]"); +const nonASCIIidentifier = new RegExp("[" + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "]"); +nonASCIIidentifierStartChars = nonASCIIidentifierChars = null; +const astralIdentifierStartCodes = [0, 11, 2, 25, 2, 18, 2, 1, 2, 14, 3, 13, 35, 122, 70, 52, 268, 28, 4, 48, 48, 31, 14, 29, 6, 37, 11, 29, 3, 35, 5, 7, 2, 4, 43, 157, 19, 35, 5, 35, 5, 39, 9, 51, 13, 10, 2, 14, 2, 6, 2, 1, 2, 10, 2, 14, 2, 6, 2, 1, 68, 310, 10, 21, 11, 7, 25, 5, 2, 41, 2, 8, 70, 5, 3, 0, 2, 43, 2, 1, 4, 0, 3, 22, 11, 22, 10, 30, 66, 18, 2, 1, 11, 21, 11, 25, 71, 55, 7, 1, 65, 0, 16, 3, 2, 2, 2, 28, 43, 28, 4, 28, 36, 7, 2, 27, 28, 53, 11, 21, 11, 18, 14, 17, 111, 72, 56, 50, 14, 50, 14, 35, 349, 41, 7, 1, 79, 28, 11, 0, 9, 21, 43, 17, 47, 20, 28, 22, 13, 52, 58, 1, 3, 0, 14, 44, 33, 24, 27, 35, 30, 0, 3, 0, 9, 34, 4, 0, 13, 47, 15, 3, 22, 0, 2, 0, 36, 17, 2, 24, 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, 159, 52, 19, 3, 21, 2, 31, 47, 21, 1, 2, 0, 185, 46, 42, 3, 37, 47, 21, 0, 60, 42, 14, 0, 72, 26, 38, 6, 186, 43, 117, 63, 32, 7, 3, 0, 3, 7, 2, 1, 2, 23, 16, 0, 2, 0, 95, 7, 3, 38, 17, 0, 2, 0, 29, 0, 11, 39, 8, 0, 22, 0, 12, 45, 20, 0, 19, 72, 264, 8, 2, 36, 18, 0, 50, 29, 113, 6, 2, 1, 2, 37, 22, 0, 26, 5, 2, 1, 2, 31, 15, 0, 328, 18, 16, 0, 2, 12, 2, 33, 125, 0, 80, 921, 103, 110, 18, 195, 2637, 96, 16, 1071, 18, 5, 4026, 582, 8634, 568, 8, 30, 18, 78, 18, 29, 19, 47, 17, 3, 32, 20, 6, 18, 689, 63, 129, 74, 6, 0, 67, 12, 65, 1, 2, 0, 29, 6135, 9, 1237, 43, 8, 8936, 3, 2, 6, 2, 1, 2, 290, 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, 757, 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, 4153, 7, 221, 3, 5761, 15, 7472, 3104, 541, 1507, 4938, 6, 4191]; +const astralIdentifierCodes = [509, 0, 227, 0, 150, 4, 294, 9, 1368, 2, 2, 1, 6, 3, 41, 2, 5, 0, 166, 1, 574, 3, 9, 9, 370, 1, 81, 2, 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, 193, 17, 10, 9, 5, 0, 82, 19, 13, 9, 214, 6, 3, 8, 28, 1, 83, 16, 16, 9, 82, 12, 9, 9, 84, 14, 5, 9, 243, 14, 166, 9, 71, 5, 2, 1, 3, 3, 2, 0, 2, 1, 13, 9, 120, 6, 3, 6, 4, 0, 29, 9, 41, 6, 2, 3, 9, 0, 10, 10, 47, 15, 406, 7, 2, 7, 17, 9, 57, 21, 2, 13, 123, 5, 4, 0, 2, 1, 2, 6, 2, 0, 9, 9, 49, 4, 2, 1, 2, 4, 9, 9, 330, 3, 10, 1, 2, 0, 49, 6, 4, 4, 14, 9, 5351, 0, 7, 14, 13835, 9, 87, 9, 39, 4, 60, 6, 26, 9, 1014, 0, 2, 54, 8, 3, 82, 0, 12, 1, 19628, 1, 4706, 45, 3, 22, 543, 4, 4, 5, 9, 7, 3, 6, 31, 3, 149, 2, 1418, 49, 513, 54, 5, 49, 9, 0, 15, 0, 23, 4, 2, 14, 1361, 6, 2, 16, 3, 6, 2, 1, 2, 4, 101, 0, 161, 6, 10, 9, 357, 0, 62, 13, 499, 13, 983, 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.var = new Set(); + this.lexical = new Set(); + this.functions = new Set(); + 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 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 & (387 | 64)) { + return false; + } + } + } + get inNonArrowFunction() { + return (this.currentThisScopeFlags() & 2) > 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); + if (bindingType & 16) { + scope.functions.add(name); + } else { + scope.lexical.add(name); + } + 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.var.add(name); + this.maybeExportDefined(scope, name); + if (scope.flags & 387) 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, { + at: loc, + identifierName: name + }); + } + } + isRedeclaredInScope(scope, name, bindingType) { + if (!(bindingType & 1)) return false; + if (bindingType & 8) { + return scope.lexical.has(name) || scope.functions.has(name) || scope.var.has(name); + } + if (bindingType & 16) { + return scope.lexical.has(name) || !this.treatFunctionsAsVarInScope(scope) && scope.var.has(name); + } + return scope.lexical.has(name) && !(scope.flags & 8 && scope.lexical.values().next().value === name) || !this.treatFunctionsAsVarInScope(scope) && scope.functions.has(name); + } + checkLocalExport(id) { + const { + name + } = id; + const topLevelScope = this.scopeStack[0]; + if (!topLevelScope.lexical.has(name) && !topLevelScope.var.has(name) && !topLevelScope.functions.has(name)) { + this.undefinedExports.set(name, id.loc.start); + } + } + currentScope() { + return this.scopeStack[this.scopeStack.length - 1]; + } + currentVarScopeFlags() { + for (let i = this.scopeStack.length - 1;; i--) { + const { + flags + } = this.scopeStack[i]; + if (flags & 387) { + return flags; + } + } + } + currentThisScopeFlags() { + for (let i = this.scopeStack.length - 1;; i--) { + const { + flags + } = this.scopeStack[i]; + if (flags & (387 | 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) { + return !scope.declareFunctions.has(name) && (scope.lexical.has(name) || scope.functions.has(name)); + } + return false; + } + checkLocalExport(id) { + if (!this.scopeStack[0].declareFunctions.has(id.name)) { + super.checkLocalExport(id); + } + } +} +class BaseParser { + constructor() { + this.sawUnambiguousESM = false; + this.ambiguousScriptDifferentAst = false; + } + hasPlugin(pluginConfig) { + if (typeof pluginConfig === "string") { + return this.plugins.has(pluginConfig); + } else { + const [pluginName, pluginOptions] = pluginConfig; + if (!this.hasPlugin(pluginName)) { + return false; + } + const actualOptions = this.plugins.get(pluginName); + for (const key of Object.keys(pluginOptions)) { + if ((actualOptions == null ? void 0 : actualOptions[key]) !== pluginOptions[key]) { + return false; + } + } + return true; + } + } + getPluginOption(plugin, name) { + var _this$plugins$get; + return (_this$plugins$get = this.plugins.get(plugin)) == null ? void 0 : _this$plugins$get[name]; + } +} +function setTrailingComments(node, comments) { + if (node.trailingComments === undefined) { + node.trailingComments = comments; + } else { + node.trailingComments.unshift(...comments); + } +} +function setLeadingComments(node, comments) { + if (node.leadingComments === undefined) { + node.leadingComments = comments; + } else { + node.leadingComments.unshift(...comments); + } +} +function setInnerComments(node, comments) { + if (node.innerComments === undefined) { + node.innerComments = comments; + } else { + node.innerComments.unshift(...comments); + } +} +function adjustInnerComments(node, elements, commentWS) { + let lastElement = null; + let i = elements.length; + while (lastElement === null && i > 0) { + lastElement = elements[--i]; + } + if (lastElement === null || lastElement.start > commentWS.start) { + setInnerComments(node, commentWS.comments); + } else { + setTrailingComments(lastElement, commentWS.comments); + } +} +class CommentsParser extends BaseParser { + addComment(comment) { + if (this.filename) comment.loc.filename = this.filename; + this.state.comments.push(comment); + } + processComment(node) { + const { + commentStack + } = this.state; + const commentStackLength = commentStack.length; + if (commentStackLength === 0) return; + let i = commentStackLength - 1; + const lastCommentWS = commentStack[i]; + if (lastCommentWS.start === node.end) { + lastCommentWS.leadingNode = node; + i--; + } + const { + start: nodeStart + } = node; + for (; i >= 0; i--) { + const commentWS = commentStack[i]; + const commentEnd = commentWS.end; + if (commentEnd > nodeStart) { + commentWS.containingNode = node; + this.finalizeComment(commentWS); + commentStack.splice(i, 1); + } else { + if (commentEnd === nodeStart) { + commentWS.trailingNode = node; + } + break; + } + } + } + finalizeComment(commentWS) { + const { + comments + } = commentWS; + if (commentWS.leadingNode !== null || commentWS.trailingNode !== null) { + if (commentWS.leadingNode !== null) { + setTrailingComments(commentWS.leadingNode, comments); + } + if (commentWS.trailingNode !== null) { + setLeadingComments(commentWS.trailingNode, comments); + } + } else { + const { + containingNode: node, + start: commentStart + } = commentWS; + if (this.input.charCodeAt(commentStart - 1) === 44) { + switch (node.type) { + case "ObjectExpression": + case "ObjectPattern": + case "RecordExpression": + adjustInnerComments(node, node.properties, commentWS); + break; + case "CallExpression": + case "OptionalCallExpression": + adjustInnerComments(node, node.arguments, commentWS); + break; + case "FunctionDeclaration": + case "FunctionExpression": + case "ArrowFunctionExpression": + case "ObjectMethod": + case "ClassMethod": + case "ClassPrivateMethod": + adjustInnerComments(node, node.params, commentWS); + break; + case "ArrayExpression": + case "ArrayPattern": + case "TupleExpression": + adjustInnerComments(node, node.elements, commentWS); + break; + case "ExportNamedDeclaration": + case "ImportDeclaration": + adjustInnerComments(node, node.specifiers, commentWS); + break; + default: + { + setInnerComments(node, comments); + } + } + } else { + setInnerComments(node, comments); + } + } + } + finalizeRemainingComments() { + const { + commentStack + } = this.state; + for (let i = commentStack.length - 1; i >= 0; i--) { + this.finalizeComment(commentStack[i]); + } + this.state.commentStack = []; + } + resetPreviousNodeTrailingComments(node) { + const { + commentStack + } = this.state; + const { + length + } = commentStack; + if (length === 0) return; + const commentWS = commentStack[length - 1]; + if (commentWS.leadingNode === node) { + commentWS.leadingNode = null; + } + } + resetPreviousIdentifierLeadingComments(node) { + const { + commentStack + } = this.state; + const { + length + } = commentStack; + if (length === 0) return; + if (commentStack[length - 1].trailingNode === node) { + commentStack[length - 1].trailingNode = null; + } else if (length >= 2 && commentStack[length - 2].trailingNode === node) { + commentStack[length - 2].trailingNode = null; + } + } + takeSurroundingComments(node, start, end) { + const { + commentStack + } = this.state; + const commentStackLength = commentStack.length; + if (commentStackLength === 0) return; + let i = commentStackLength - 1; + for (; i >= 0; i--) { + const commentWS = commentStack[i]; + const commentEnd = commentWS.end; + const commentStart = commentWS.start; + if (commentStart === end) { + commentWS.leadingNode = node; + } else if (commentEnd === start) { + commentWS.trailingNode = node; + } else if (commentEnd < start) { + break; + } + } + } +} +const lineBreak = /\r\n?|[\n\u2028\u2029]/; +const lineBreakG = new RegExp(lineBreak.source, "g"); +function isNewLine(code) { + switch (code) { + case 10: + case 13: + case 8232: + case 8233: + return true; + default: + return false; + } +} +const skipWhiteSpace = /(?:\s|\/\/.*|\/\*[^]*?\*\/)*/g; +const skipWhiteSpaceInLine = /(?:[^\S\n\r\u2028\u2029]|\/\/.*|\/\*.*?\*\/)*/g; +const skipWhiteSpaceToLineBreak = new RegExp("(?=(" + skipWhiteSpaceInLine.source + "))\\1" + /(?=[\n\r\u2028\u2029]|\/\*(?!.*?\*\/)|$)/.source, "y"); +function isWhitespace(code) { + switch (code) { + case 0x0009: + case 0x000b: + case 0x000c: + case 32: + case 160: + case 5760: + case 0x2000: + case 0x2001: + case 0x2002: + case 0x2003: + case 0x2004: + case 0x2005: + case 0x2006: + case 0x2007: + case 0x2008: + case 0x2009: + case 0x200a: + case 0x202f: + case 0x205f: + case 0x3000: + case 0xfeff: + return true; + default: + return false; + } +} +class State { + constructor() { + this.strict = void 0; + this.curLine = void 0; + this.lineStart = void 0; + this.startLoc = void 0; + this.endLoc = void 0; + this.errors = []; + this.potentialArrowAt = -1; + this.noArrowAt = []; + this.noArrowParamsConversionAt = []; + this.maybeInArrowParameters = false; + this.inType = false; + this.noAnonFunctionType = false; + this.hasFlowComment = false; + this.isAmbientContext = false; + this.inAbstractClass = false; + this.inDisallowConditionalTypesContext = false; + this.topicContext = { + maxNumOfResolvableTopics: 0, + maxTopicIndex: null + }; + this.soloAwait = false; + this.inFSharpPipelineDirectBody = false; + this.labels = []; + this.comments = []; + this.commentStack = []; + this.pos = 0; + this.type = 137; + this.value = null; + this.start = 0; + this.end = 0; + this.lastTokEndLoc = null; + this.lastTokStartLoc = null; + this.lastTokStart = 0; + this.context = [types.brace]; + this.canStartJSXElement = true; + this.containsEsc = false; + this.firstInvalidTemplateEscapePos = null; + this.strictErrors = new Map(); + this.tokensLength = 0; + } + init({ + strictMode, + sourceType, + startLine, + startColumn + }) { + this.strict = strictMode === false ? false : strictMode === true ? true : sourceType === "module"; + this.curLine = startLine; + this.lineStart = -startColumn; + this.startLoc = this.endLoc = new Position(startLine, startColumn, 0); + } + curPosition() { + return new Position(this.curLine, this.pos - this.lineStart, this.pos); + } + clone(skipArrays) { + const state = new State(); + const keys = Object.keys(this); + for (let i = 0, length = keys.length; i < length; i++) { + const key = keys[i]; + let val = this[key]; + if (!skipArrays && Array.isArray(val)) { + val = val.slice(); + } + state[key] = val; + } + return state; + } +} +var _isDigit = function isDigit(code) { + return code >= 48 && code <= 57; +}; +const 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 = input.slice(startPos, pos + 2).match(/^[0-7]+/); + 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 + }; +} +const _excluded = ["at"], + _excluded2 = ["at"]; +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) { + this.type = state.type; + this.value = state.value; + this.start = state.start; + this.end = state.end; + this.loc = new SourceLocation(state.startLoc, state.endLoc); + } +} +class Tokenizer extends CommentsParser { + constructor(options, input) { + super(); + this.isLookahead = void 0; + this.tokens = []; + this.errorHandlers_readInt = { + invalidDigit: (pos, lineStart, curLine, radix) => { + if (!this.options.errorRecovery) return false; + this.raise(Errors.InvalidDigit, { + at: 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, { + at: buildPosition(pos, lineStart, curLine) + }); + }, + unterminated: (pos, lineStart, curLine) => { + throw this.raise(Errors.UnterminatedString, { + at: 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, { + at: buildPosition(pos, lineStart, curLine) + }); + } + }); + this.state = new State(); + this.state.init(options); + this.input = input; + this.length = input.length; + this.isLookahead = false; + } + pushToken(token) { + this.tokens.length = this.state.tokensLength; + this.tokens.push(token); + ++this.state.tokensLength; + } + next() { + this.checkKeywordEscapes(); + if (this.options.tokens) { + this.pushToken(new Token(this.state)); + } + this.state.lastTokStart = this.state.start; + this.state.lastTokEndLoc = this.state.endLoc; + this.state.lastTokStartLoc = this.state.startLoc; + this.nextToken(); + } + eat(type) { + if (this.match(type)) { + this.next(); + return true; + } else { + return false; + } + } + match(type) { + return this.state.type === type; + } + createLookaheadState(state) { + return { + pos: state.pos, + value: null, + type: state.type, + start: state.start, + end: state.end, + context: [this.curContext()], + inType: state.inType, + startLoc: state.startLoc, + lastTokEndLoc: state.lastTokEndLoc, + curLine: state.curLine, + lineStart: state.lineStart, + curPosition: state.curPosition + }; + } + lookahead() { + const old = this.state; + this.state = this.createLookaheadState(old); + this.isLookahead = true; + this.nextToken(); + this.isLookahead = false; + const curr = this.state; + this.state = old; + return curr; + } + nextTokenStart() { + return this.nextTokenStartSince(this.state.pos); + } + nextTokenStartSince(pos) { + skipWhiteSpace.lastIndex = pos; + return skipWhiteSpace.test(this.input) ? skipWhiteSpace.lastIndex : pos; + } + lookaheadCharCode() { + return this.input.charCodeAt(this.nextTokenStart()); + } + 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(137); + 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, { + at: 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, + end: end + commentEnd.length, + loc: new SourceLocation(startLoc, this.state.curPosition()) + }; + if (this.options.tokens) this.pushToken(comment); + return comment; + } + skipLineComment(startSkip) { + const start = this.state.pos; + let startLoc; + if (!this.isLookahead) startLoc = this.state.curPosition(); + let ch = this.input.charCodeAt(this.state.pos += startSkip); + if (this.state.pos < this.length) { + while (!isNewLine(ch) && ++this.state.pos < this.length) { + ch = this.input.charCodeAt(this.state.pos); + } + } + if (this.isLookahead) return; + const end = this.state.pos; + const value = this.input.slice(start + startSkip, end); + const comment = { + type: "CommentLine", + value, + start, + end, + loc: new SourceLocation(startLoc, this.state.curPosition()) + }; + if (this.options.tokens) this.pushToken(comment); + return comment; + } + skipSpace() { + const spaceStart = this.state.pos; + const comments = []; + loop: while (this.state.pos < this.length) { + const ch = this.input.charCodeAt(this.state.pos); + switch (ch) { + case 32: + case 160: + case 9: + ++this.state.pos; + break; + case 13: + if (this.input.charCodeAt(this.state.pos + 1) === 10) { + ++this.state.pos; + } + case 10: + case 8232: + case 8233: + ++this.state.pos; + ++this.state.curLine; + this.state.lineStart = this.state.pos; + break; + case 47: + switch (this.input.charCodeAt(this.state.pos + 1)) { + case 42: + { + const comment = this.skipBlockComment("*/"); + if (comment !== undefined) { + this.addComment(comment); + if (this.options.attachComment) comments.push(comment); + } + break; + } + case 47: + { + const comment = this.skipLineComment(2); + if (comment !== undefined) { + this.addComment(comment); + if (this.options.attachComment) comments.push(comment); + } + break; + } + default: + break loop; + } + break; + default: + if (isWhitespace(ch)) { + ++this.state.pos; + } else if (ch === 45 && !this.inModule && this.options.annexB) { + const pos = this.state.pos; + if (this.input.charCodeAt(pos + 1) === 45 && this.input.charCodeAt(pos + 2) === 62 && (spaceStart === 0 || this.state.lineStart > spaceStart)) { + const comment = this.skipLineComment(3); + if (comment !== undefined) { + this.addComment(comment); + if (this.options.attachComment) comments.push(comment); + } + } else { + break loop; + } + } else if (ch === 60 && !this.inModule && this.options.annexB) { + const pos = this.state.pos; + if (this.input.charCodeAt(pos + 1) === 33 && this.input.charCodeAt(pos + 2) === 45 && this.input.charCodeAt(pos + 3) === 45) { + const comment = this.skipLineComment(4); + if (comment !== undefined) { + this.addComment(comment); + if (this.options.attachComment) comments.push(comment); + } + } else { + break loop; + } + } else { + break loop; + } + } + } + if (comments.length > 0) { + const end = this.state.pos; + const commentWhitespace = { + start: spaceStart, + end, + comments, + leadingNode: null, + trailingNode: null, + containingNode: null + }; + this.state.commentStack.push(commentWhitespace); + } + } + finishToken(type, val) { + this.state.end = this.state.pos; + this.state.endLoc = this.state.curPosition(); + const prevType = this.state.type; + this.state.type = type; + this.state.value = val; + if (!this.isLookahead) { + this.updateContext(prevType); + } + } + replaceToken(type) { + this.state.type = type; + this.updateContext(); + } + readToken_numberSign() { + if (this.state.pos === 0 && this.readToken_interpreter()) { + return; + } + const nextPos = this.state.pos + 1; + const next = this.codePointAtPos(nextPos); + if (next >= 48 && next <= 57) { + throw this.raise(Errors.UnexpectedDigitAfterHash, { + at: 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, { + at: this.state.curPosition() + }); + } + this.state.pos += 2; + if (next === 123) { + this.finishToken(7); + } else { + this.finishToken(1); + } + } else if (isIdentifierStart(next)) { + ++this.state.pos; + this.finishToken(136, this.readWord1(next)); + } else if (next === 92) { + ++this.state.pos; + this.finishToken(136, 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, { + at: this.state.curPosition() + }); + } + this.state.pos += 2; + this.finishToken(9); + return; + } + if (this.hasPlugin("recordAndTuple") && next === 93) { + if (this.getPluginOption("recordAndTuple", "syntaxType") !== "bar") { + throw this.raise(Errors.TupleExpressionBarIncorrectEndSyntaxType, { + at: this.state.curPosition() + }); + } + this.state.pos += 2; + this.finishToken(4); + return; + } + } + if (next === 61) { + this.finishOp(30, 2); + return; + } + this.finishOp(code === 124 ? 43 : 45, 1); + } + readToken_caret() { + const next = this.input.charCodeAt(this.state.pos + 1); + if (next === 61 && !this.state.inType) { + this.finishOp(32, 2); + } else if (next === 94 && this.hasPlugin(["pipelineOperator", { + proposal: "hack", + topicToken: "^^" + }])) { + this.finishOp(37, 2); + const lookaheadCh = this.input.codePointAt(this.state.pos); + if (lookaheadCh === 94) { + 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, { + at: this.state.curPosition() + }); + } + this.state.pos += 2; + this.finishToken(2); + } else { + ++this.state.pos; + this.finishToken(0); + } + return; + case 93: + ++this.state.pos; + this.finishToken(3); + return; + case 123: + if (this.hasPlugin("recordAndTuple") && this.input.charCodeAt(this.state.pos + 1) === 124) { + if (this.getPluginOption("recordAndTuple", "syntaxType") !== "bar") { + throw this.raise(Errors.RecordExpressionBarIncorrectStartSyntaxType, { + at: this.state.curPosition() + }); + } + this.state.pos += 2; + this.finishToken(6); + } else { + ++this.state.pos; + this.finishToken(5); + } + return; + case 125: + ++this.state.pos; + this.finishToken(8); + return; + case 58: + if (this.hasPlugin("functionBind") && this.input.charCodeAt(this.state.pos + 1) === 58) { + this.finishOp(15, 2); + } else { + ++this.state.pos; + this.finishToken(14); + } + return; + case 63: + this.readToken_question(); + return; + case 96: + this.readTemplateToken(); + return; + case 48: + { + const next = this.input.charCodeAt(this.state.pos + 1); + if (next === 120 || next === 88) { + this.readRadixNumber(16); + return; + } + if (next === 111 || next === 79) { + this.readRadixNumber(8); + return; + } + if (next === 98 || next === 66) { + this.readRadixNumber(2); + return; + } + } + case 49: + case 50: + case 51: + case 52: + case 53: + case 54: + case 55: + case 56: + case 57: + this.readNumber(false); + return; + case 34: + case 39: + this.readString(code); + return; + case 47: + this.readToken_slash(); + return; + case 37: + case 42: + this.readToken_mult_modulo(code); + return; + case 124: + case 38: + this.readToken_pipe_amp(code); + return; + case 94: + this.readToken_caret(); + return; + case 43: + case 45: + this.readToken_plus_min(code); + return; + case 60: + this.readToken_lt(); + return; + case 62: + this.readToken_gt(); + return; + case 61: + case 33: + this.readToken_eq_excl(code); + return; + case 126: + this.finishOp(36, 1); + return; + case 64: + this.readToken_atSign(); + return; + case 35: + this.readToken_numberSign(); + return; + case 92: + this.readWord(); + return; + default: + if (isIdentifierStart(code)) { + this.readWord(code); + return; + } + } + throw this.raise(Errors.InvalidOrUnexpectedToken, { + at: 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, { + at: createPositionWithColumnOffset(startLoc, 1) + }); + } + const ch = this.input.charCodeAt(pos); + if (isNewLine(ch)) { + throw this.raise(Errors.UnterminatedRegExp, { + at: createPositionWithColumnOffset(startLoc, 1) + }); + } + if (escaped) { + escaped = false; + } else { + if (ch === 91) { + inClass = true; + } else if (ch === 93 && inClass) { + inClass = false; + } else if (ch === 47 && !inClass) { + break; + } + escaped = ch === 92; + } + } + const content = this.input.slice(start, pos); + ++pos; + let mods = ""; + const nextPos = () => createPositionWithColumnOffset(startLoc, pos + 2 - start); + while (pos < this.length) { + const cp = this.codePointAtPos(pos); + const char = String.fromCharCode(cp); + if (VALID_REGEX_FLAGS.has(cp)) { + if (cp === 118) { + if (mods.includes("u")) { + this.raise(Errors.IncompatibleRegExpUVFlags, { + at: nextPos() + }); + } + } else if (cp === 117) { + if (mods.includes("v")) { + this.raise(Errors.IncompatibleRegExpUVFlags, { + at: nextPos() + }); + } + } + if (mods.includes(char)) { + this.raise(Errors.DuplicateRegExpFlags, { + at: nextPos() + }); + } + } else if (isIdentifierChar(cp) || cp === 92) { + this.raise(Errors.MalformedRegExpFlags, { + at: nextPos() + }); + } else { + break; + } + ++pos; + mods += char; + } + this.state.pos = pos; + this.finishToken(135, { + 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 startLoc = this.state.curPosition(); + let isBigInt = false; + this.state.pos += 2; + const val = this.readInt(radix); + if (val == null) { + this.raise(Errors.InvalidDigit, { + at: createPositionWithColumnOffset(startLoc, 2), + radix + }); + } + const next = this.input.charCodeAt(this.state.pos); + if (next === 110) { + ++this.state.pos; + isBigInt = true; + } else if (next === 109) { + throw this.raise(Errors.InvalidDecimal, { + at: startLoc + }); + } + if (isIdentifierStart(this.codePointAtPos(this.state.pos))) { + throw this.raise(Errors.NumberIdentifier, { + at: this.state.curPosition() + }); + } + if (isBigInt) { + const str = this.input.slice(startLoc.index, this.state.pos).replace(/[_n]/g, ""); + this.finishToken(133, str); + return; + } + this.finishToken(132, val); + } + readNumber(startsWithDot) { + const start = this.state.pos; + const startLoc = this.state.curPosition(); + let isFloat = false; + let isBigInt = false; + let isDecimal = false; + let hasExponent = false; + let isOctal = false; + if (!startsWithDot && this.readInt(10) === null) { + this.raise(Errors.InvalidNumber, { + at: this.state.curPosition() + }); + } + const hasLeadingZero = this.state.pos - start >= 2 && this.input.charCodeAt(start) === 48; + if (hasLeadingZero) { + const integer = this.input.slice(start, this.state.pos); + this.recordStrictModeErrors(Errors.StrictOctalLiteral, { + at: startLoc + }); + if (!this.state.strict) { + const underscorePos = integer.indexOf("_"); + if (underscorePos > 0) { + this.raise(Errors.ZeroDigitNumericSeparator, { + at: createPositionWithColumnOffset(startLoc, underscorePos) + }); + } + } + isOctal = hasLeadingZero && !/[89]/.test(integer); + } + let next = this.input.charCodeAt(this.state.pos); + if (next === 46 && !isOctal) { + ++this.state.pos; + this.readInt(10); + isFloat = true; + next = this.input.charCodeAt(this.state.pos); + } + if ((next === 69 || next === 101) && !isOctal) { + next = this.input.charCodeAt(++this.state.pos); + if (next === 43 || next === 45) { + ++this.state.pos; + } + if (this.readInt(10) === null) { + this.raise(Errors.InvalidOrMissingExponent, { + at: startLoc + }); + } + isFloat = true; + hasExponent = true; + next = this.input.charCodeAt(this.state.pos); + } + if (next === 110) { + if (isFloat || hasLeadingZero) { + this.raise(Errors.InvalidBigIntLiteral, { + at: startLoc + }); + } + ++this.state.pos; + isBigInt = true; + } + if (next === 109) { + this.expectPlugin("decimal", this.state.curPosition()); + if (hasExponent || hasLeadingZero) { + this.raise(Errors.InvalidDecimal, { + at: startLoc + }); + } + ++this.state.pos; + isDecimal = true; + } + if (isIdentifierStart(this.codePointAtPos(this.state.pos))) { + throw this.raise(Errors.NumberIdentifier, { + at: this.state.curPosition() + }); + } + const str = this.input.slice(start, this.state.pos).replace(/[_mn]/g, ""); + if (isBigInt) { + this.finishToken(133, str); + return; + } + if (isDecimal) { + this.finishToken(134, str); + return; + } + const val = isOctal ? parseInt(str, 8) : parseFloat(str); + this.finishToken(132, 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(131, 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, 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, { + at: this.state.curPosition() + }); + chunkStart = this.state.pos - 1; + continue; + } + ++this.state.pos; + const esc = this.readCodePoint(true); + if (esc !== null) { + if (!identifierCheck(esc)) { + this.raise(Errors.EscapedCharNotAnIdentifier, { + at: escStart + }); + } + word += String.fromCodePoint(esc); + } + chunkStart = this.state.pos; + } else { + break; + } + } + return word + this.input.slice(chunkStart, this.state.pos); + } + readWord(firstCode) { + const word = this.readWord1(firstCode); + const type = keywords$1.get(word); + if (type !== undefined) { + this.finishToken(type, tokenLabelName(type)); + } else { + this.finishToken(130, word); + } + } + checkKeywordEscapes() { + const { + type + } = this.state; + if (tokenIsKeyword(type) && this.state.containsEsc) { + this.raise(Errors.InvalidEscapedReservedWord, { + at: this.state.startLoc, + reservedWord: tokenLabelName(type) + }); + } + } + raise(toParseError, raiseProperties) { + const { + at + } = raiseProperties, + details = _objectWithoutPropertiesLoose(raiseProperties, _excluded); + const loc = at instanceof Position ? at : at.loc.start; + const error = toParseError({ + loc, + details + }); + if (!this.options.errorRecovery) throw error; + if (!this.isLookahead) this.state.errors.push(error); + return error; + } + raiseOverwrite(toParseError, raiseProperties) { + const { + at + } = raiseProperties, + details = _objectWithoutPropertiesLoose(raiseProperties, _excluded2); + 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, raiseProperties); + } + updateContext(prevType) {} + unexpected(loc, type) { + throw this.raise(Errors.UnexpectedToken, { + expected: type ? tokenLabelName(type) : null, + at: loc != null ? loc : this.state.startLoc + }); + } + expectPlugin(pluginName, loc) { + if (this.hasPlugin(pluginName)) { + return true; + } + throw this.raise(Errors.MissingPlugin, { + at: loc != null ? loc : this.state.startLoc, + missingPlugin: [pluginName] + }); + } + expectOnePlugin(pluginNames) { + if (!pluginNames.some(name => this.hasPlugin(name))) { + throw this.raise(Errors.MissingOneOfPlugins, { + at: this.state.startLoc, + missingPlugin: pluginNames + }); + } + } + errorBuilder(error) { + return (pos, lineStart, curLine) => { + this.raise(error, { + at: 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, { + at: 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, { + at: 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, { + at: 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, { + at: node + }) { + const origin = { + at: 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, { + at: node + }) { + const { + stack + } = this; + const scope = stack[stack.length - 1]; + const origin = { + at: 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, { + at: 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(); +} +const PARAM = 0b0000, + PARAM_YIELD = 0b0001, + PARAM_AWAIT = 0b0010, + PARAM_RETURN = 0b0100, + PARAM_IN = 0b1000; +class ProductionParameterHandler { + constructor() { + this.stacks = []; + } + enter(flags) { + this.stacks.push(flags); + } + exit() { + this.stacks.pop(); + } + currentFlags() { + return this.stacks[this.stacks.length - 1]; + } + get hasAwait() { + return (this.currentFlags() & PARAM_AWAIT) > 0; + } + get hasYield() { + return (this.currentFlags() & PARAM_YIELD) > 0; + } + get hasReturn() { + return (this.currentFlags() & PARAM_RETURN) > 0; + } + get hasIn() { + return (this.currentFlags() & PARAM_IN) > 0; + } +} +function functionFlags(isAsync, isGenerator) { + return (isAsync ? PARAM_AWAIT : 0) | (isGenerator ? PARAM_YIELD : 0); +} +class UtilParser extends Tokenizer { + addExtra(node, key, value, enumerable = true) { + if (!node) return; + const extra = node.extra = node.extra || {}; + if (enumerable) { + extra[key] = value; + } else { + Object.defineProperty(extra, key, { + enumerable, + value + }); + } + } + isContextual(token) { + return this.state.type === token && !this.state.containsEsc; + } + isUnparsedContextual(nameStart, name) { + const nameEnd = nameStart + name.length; + if (this.input.slice(nameStart, nameEnd) === name) { + const nextCh = this.input.charCodeAt(nameEnd); + return !(isIdentifierChar(nextCh) || (nextCh & 0xfc00) === 0xd800); + } + return false; + } + isLookaheadContextual(name) { + const next = this.nextTokenStart(); + return this.isUnparsedContextual(next, name); + } + eatContextual(token) { + if (this.isContextual(token)) { + this.next(); + return true; + } + return false; + } + expectContextual(token, toParseError) { + if (!this.eatContextual(token)) { + if (toParseError != null) { + throw this.raise(toParseError, { + at: this.state.startLoc + }); + } + this.unexpected(null, token); + } + } + canInsertSemicolon() { + return this.match(137) || this.match(8) || this.hasPrecedingLineBreak(); + } + hasPrecedingLineBreak() { + return lineBreak.test(this.input.slice(this.state.lastTokEndLoc.index, this.state.start)); + } + hasFollowingLineBreak() { + skipWhiteSpaceToLineBreak.lastIndex = this.state.end; + return skipWhiteSpaceToLineBreak.test(this.input); + } + isLineTerminator() { + return this.eat(13) || this.canInsertSemicolon(); + } + semicolon(allowAsi = true) { + if (allowAsi ? this.isLineTerminator() : this.eat(13)) return; + this.raise(Errors.MissingSemicolon, { + at: this.state.lastTokEndLoc + }); + } + expect(type, loc) { + 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, + error: null, + thrown: false, + aborted: false, + failState: null + }; + } catch (error) { + const failState = this.state; + this.state = oldState; + if (error instanceof SyntaxError) { + return { + node: null, + error, + thrown: true, + aborted: false, + failState + }; + } + if (error === abortSignal) { + return { + node: abortSignal.node, + error: null, + thrown: false, + aborted: true, + failState + }; + } + throw error; + } + } + checkExpressionErrors(refExpressionErrors, andThrow) { + if (!refExpressionErrors) return false; + const { + shorthandAssignLoc, + doubleProtoLoc, + privateKeyLoc, + optionalParametersLoc + } = refExpressionErrors; + const hasErrors = !!shorthandAssignLoc || !!doubleProtoLoc || !!optionalParametersLoc || !!privateKeyLoc; + if (!andThrow) { + return hasErrors; + } + if (shorthandAssignLoc != null) { + this.raise(Errors.InvalidCoverInitializedName, { + at: shorthandAssignLoc + }); + } + if (doubleProtoLoc != null) { + this.raise(Errors.DuplicateProto, { + at: doubleProtoLoc + }); + } + if (privateKeyLoc != null) { + this.raise(Errors.UnexpectedPrivateField, { + at: privateKeyLoc + }); + } + if (optionalParametersLoc != null) { + this.unexpected(optionalParametersLoc); + } + } + isLiteralPropertyName() { + return tokenIsLiteralPropertyName(this.state.type); + } + isPrivateName(node) { + return node.type === "PrivateName"; + } + getPrivateNameSV(node) { + return node.id.name; + } + hasPropertyAsPrivateName(node) { + return (node.type === "MemberExpression" || node.type === "OptionalMemberExpression") && this.isPrivateName(node.property); + } + 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 = PARAM; + if (this.inModule) { + paramFlags |= PARAM_AWAIT; + } + this.scope.enter(1); + this.prodParam.enter(paramFlags); + } + checkDestructuringPrivate(refExpressionErrors) { + const { + privateKeyLoc + } = refExpressionErrors; + if (privateKeyLoc !== null) { + this.expectPlugin("destructuringPrivate", privateKeyLoc); + } + } +} +class ExpressionErrors { + constructor() { + this.shorthandAssignLoc = null; + this.doubleProtoLoc = null; + this.privateKeyLoc = null; + this.optionalParametersLoc = null; + } +} +class Node { + constructor(parser, pos, loc) { + this.type = ""; + this.start = pos; + this.end = 0; + this.loc = new SourceLocation(loc); + if (parser != null && parser.options.ranges) this.range = [pos, 0]; + if (parser != null && parser.filename) this.loc.filename = parser.filename; + } +} +const NodePrototype = Node.prototype; +{ + NodePrototype.__clone = function () { + const newNode = new Node(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; + }; +} +function clonePlaceholder(node) { + return cloneIdentifier(node); +} +function cloneIdentifier(node) { + const { + type, + start, + end, + loc, + range, + extra, + name + } = node; + const cloned = Object.create(NodePrototype); + cloned.type = type; + cloned.start = start; + cloned.end = end; + cloned.loc = loc; + cloned.range = range; + cloned.extra = extra; + cloned.name = name; + if (type === "Placeholder") { + cloned.expectedNode = node.expectedNode; + } + return cloned; +} +function cloneStringLiteral(node) { + const { + type, + start, + end, + loc, + range, + extra + } = node; + if (type === "Placeholder") { + return clonePlaceholder(node); + } + const cloned = Object.create(NodePrototype); + cloned.type = type; + cloned.start = start; + cloned.end = end; + cloned.loc = loc; + cloned.range = range; + if (node.raw !== undefined) { + cloned.raw = node.raw; + } else { + cloned.extra = extra; + } + cloned.value = node.value; + return cloned; +} +class NodeUtils extends UtilParser { + startNode() { + return new Node(this, this.state.start, this.state.startLoc); + } + startNodeAt(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.options.ranges) node.range[1] = endLoc.index; + if (this.options.attachComment) this.processComment(node); + return node; + } + resetStartLocation(node, startLoc) { + node.start = startLoc.index; + node.loc.start = startLoc; + if (this.options.ranges) node.range[0] = startLoc.index; + } + resetEndLocation(node, endLoc = this.state.lastTokEndLoc) { + node.end = endLoc.index; + node.loc.end = endLoc; + if (this.options.ranges) node.range[1] = endLoc.index; + } + resetStartLocationFromNode(node, locationNode) { + this.resetStartLocation(node, locationNode.loc.start); + } +} +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}\`.`, + EnumStringMemberInconsistentlyInitailized: ({ + 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"; + } + shouldParseEnums() { + return !!this.getPluginOption("flow", "enums"); + } + finishToken(type, val) { + if (type !== 131 && 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(108); + if (this.state.lastTokStart > moduloLoc.index + 1) { + this.raise(FlowErrors.UnexpectedSpaceBetweenModuloChecks, { + at: 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(125)) { + if (this.match(16)) { + return this.flowParseDeclareModuleExports(node); + } else { + if (insideModule) { + this.raise(FlowErrors.NestedDeclareModule, { + at: this.state.lastTokStartLoc + }); + } + return this.flowParseDeclareModule(node); + } + } else if (this.isContextual(128)) { + return this.flowParseDeclareTypeAlias(node); + } else if (this.isContextual(129)) { + return this.flowParseDeclareOpaqueType(node); + } else if (this.isContextual(127)) { + return this.flowParseDeclareInterface(node); + } else if (this.match(82)) { + return this.flowParseDeclareExportDeclaration(node, insideModule); + } else { + 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(131)) { + 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)) { + let bodyNode = this.startNode(); + if (this.match(83)) { + this.next(); + if (!this.isContextual(128) && !this.match(87)) { + this.raise(FlowErrors.InvalidNonTypeImportInDeclareModule, { + at: this.state.lastTokStartLoc + }); + } + super.parseImport(bodyNode); + } else { + this.expectContextual(123, FlowErrors.UnsupportedStatementInDeclareModule); + bodyNode = this.flowParseDeclare(bodyNode, true); + } + body.push(bodyNode); + } + this.scope.exit(); + this.expect(8); + this.finishNode(bodyNode, "BlockStatement"); + let kind = null; + let hasModuleExport = false; + body.forEach(bodyElement => { + if (isEsModuleType(bodyElement)) { + if (kind === "CommonJS") { + this.raise(FlowErrors.AmbiguousDeclareModuleKind, { + at: bodyElement + }); + } + kind = "ES"; + } else if (bodyElement.type === "DeclareModuleExports") { + if (hasModuleExport) { + this.raise(FlowErrors.DuplicateDeclareModuleExports, { + at: bodyElement + }); + } + if (kind === "ES") { + this.raise(FlowErrors.AmbiguousDeclareModuleKind, { + at: 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(128) || this.isContextual(127)) && !insideModule) { + const label = this.state.value; + throw this.raise(FlowErrors.UnsupportedDeclareExportKind, { + at: this.state.startLoc, + unsupportedExportKind: label, + suggestion: exportSuggestions[label] + }); + } + if (this.match(74) || this.match(68) || this.match(80) || this.isContextual(129)) { + node.declaration = this.flowParseDeclare(this.startNode()); + node.default = false; + return this.finishNode(node, "DeclareExportDeclaration"); + } else if (this.match(55) || this.match(5) || this.isContextual(127) || this.isContextual(128) || this.isContextual(129)) { + node = this.parseExport(node, null); + if (node.type === "ExportNamedDeclaration") { + node.type = "ExportDeclaration"; + node.default = false; + delete node.exportKind; + } + node.type = "Declare" + node.type; + return node; + } + } + this.unexpected(); + } + flowParseDeclareModuleExports(node) { + this.next(); + this.expectContextual(109); + node.typeAnnotation = this.flowParseTypeAnnotation(); + this.semicolon(); + return this.finishNode(node, "DeclareModuleExports"); + } + flowParseDeclareTypeAlias(node) { + this.next(); + const finished = this.flowParseTypeAlias(node); + finished.type = "DeclareTypeAlias"; + return finished; + } + flowParseDeclareOpaqueType(node) { + this.next(); + const finished = this.flowParseOpaqueType(node, true); + finished.type = "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(115)) { + do { + node.mixins.push(this.flowParseInterfaceExtends()); + } while (this.eat(12)); + } + if (this.eatContextual(111)) { + 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, { + at: this.state.startLoc + }); + } + } + checkReservedType(word, startLoc, declaration) { + if (!reservedTypes.has(word)) return; + this.raise(declaration ? FlowErrors.AssignReservedType : FlowErrors.UnexpectedReservedType, { + at: 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(128); + 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, { + at: nodeStartLoc + }); + } + } + return this.finishNode(node, "TypeParameter"); + } + flowParseTypeParameterDeclaration() { + const oldInType = this.state.inType; + const node = this.startNode(); + node.params = []; + this.state.inType = true; + if (this.match(47) || this.match(140)) { + this.next(); + } else { + this.unexpected(); + } + let defaultRequired = false; + do { + const typeParameter = this.flowParseTypeParameter(defaultRequired); + node.params.push(typeParameter); + if (typeParameter.default) { + defaultRequired = true; + } + if (!this.match(48)) { + this.expect(12); + } + } while (!this.match(48)); + this.expect(48); + this.state.inType = oldInType; + return this.finishNode(node, "TypeParameterDeclaration"); + } + flowParseTypeParameterInstantiation() { + const node = this.startNode(); + const oldInType = this.state.inType; + node.params = []; + this.state.inType = true; + this.expect(47); + const oldNoAnonFunctionType = this.state.noAnonFunctionType; + this.state.noAnonFunctionType = false; + while (!this.match(48)) { + node.params.push(this.flowParseType()); + if (!this.match(48)) { + this.expect(12); + } + } + this.state.noAnonFunctionType = oldNoAnonFunctionType; + this.expect(48); + this.state.inType = oldInType; + return this.finishNode(node, "TypeParameterInstantiation"); + } + flowParseTypeParameterInstantiationCallOrNew() { + const node = this.startNode(); + const oldInType = this.state.inType; + node.params = []; + this.state.inType = true; + this.expect(47); + while (!this.match(48)) { + node.params.push(this.flowParseTypeOrImplicitInstantiation()); + if (!this.match(48)) { + this.expect(12); + } + } + this.expect(48); + this.state.inType = oldInType; + return this.finishNode(node, "TypeParameterInstantiation"); + } + flowParseInterfaceType() { + const node = this.startNode(); + this.expectContextual(127); + 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(132) || this.match(131) ? 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(116)) { + const lookahead = this.lookahead(); + if (lookahead.type !== 14 && lookahead.type !== 17) { + this.next(); + protoStartLoc = this.state.startLoc; + allowStatic = false; + } + } + if (allowStatic && this.isContextual(104)) { + const lookahead = this.lookahead(); + if (lookahead.type !== 14 && lookahead.type !== 17) { + this.next(); + isStatic = true; + } + } + const variance = this.flowParseVariance(); + if (this.eat(0)) { + if (protoStartLoc != null) { + this.unexpected(protoStartLoc); + } + if (this.eat(0)) { + if (variance) { + this.unexpected(variance.loc.start); + } + nodeStart.internalSlots.push(this.flowParseObjectTypeInternalSlot(node, isStatic)); + } else { + nodeStart.indexers.push(this.flowParseObjectTypeIndexer(node, isStatic, variance)); + } + } else if (this.match(10) || this.match(47)) { + if (protoStartLoc != null) { + this.unexpected(protoStartLoc); + } + if (variance) { + this.unexpected(variance.loc.start); + } + nodeStart.callProperties.push(this.flowParseObjectTypeCallProperty(node, isStatic)); + } else { + let kind = "init"; + if (this.isContextual(98) || this.isContextual(103)) { + const lookahead = this.lookahead(); + if (tokenIsLiteralPropertyName(lookahead.type)) { + kind = this.state.value; + this.next(); + } + } + const propOrInexact = this.flowParseObjectTypeProperty(node, isStatic, protoStartLoc, variance, kind, allowSpread, allowInexact != null ? allowInexact : !exact); + if (propOrInexact === null) { + inexact = true; + inexactStartLoc = this.state.lastTokStartLoc; + } else { + nodeStart.properties.push(propOrInexact); + } + } + this.flowObjectTypeSemicolon(); + if (inexactStartLoc && !this.match(8) && !this.match(9)) { + this.raise(FlowErrors.UnexpectedExplicitInexactInObject, { + at: inexactStartLoc + }); + } + } + this.expect(endDelim); + if (allowSpread) { + nodeStart.inexact = inexact; + } + const out = this.finishNode(nodeStart, "ObjectTypeAnnotation"); + this.state.inType = oldInType; + return out; + } + flowParseObjectTypeProperty(node, isStatic, protoStartLoc, variance, kind, allowSpread, allowInexact) { + if (this.eat(21)) { + const isInexactToken = this.match(12) || this.match(13) || this.match(8) || this.match(9); + if (isInexactToken) { + if (!allowSpread) { + this.raise(FlowErrors.InexactInsideNonObject, { + at: this.state.lastTokStartLoc + }); + } else if (!allowInexact) { + this.raise(FlowErrors.InexactInsideExact, { + at: this.state.lastTokStartLoc + }); + } + if (variance) { + this.raise(FlowErrors.InexactVariance, { + at: variance + }); + } + return null; + } + if (!allowSpread) { + this.raise(FlowErrors.UnexpectedSpreadType, { + at: this.state.lastTokStartLoc + }); + } + if (protoStartLoc != null) { + this.unexpected(protoStartLoc); + } + if (variance) { + this.raise(FlowErrors.SpreadVariance, { + at: 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, { + at: 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, { + at: property.value.this + }); + } + if (length !== paramCount) { + this.raise(property.kind === "get" ? Errors.BadGetterArity : Errors.BadSetterArity, { + at: property + }); + } + if (property.kind === "set" && property.value.rest) { + this.raise(Errors.BadSetterRestParameter, { + at: property + }); + } + } + flowObjectTypeSemicolon() { + if (!this.eat(13) && !this.eat(12) && !this.match(8) && !this.match(9)) { + this.unexpected(); + } + } + flowParseQualifiedTypeIdentifier(startLoc, id) { + var _startLoc; + (_startLoc = 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, { + at: node + }); + } + name = this.parseIdentifier(isThis); + if (this.eat(17)) { + optional = true; + if (isThis) { + this.raise(FlowErrors.ThisParamMayNotBeOptional, { + at: 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: + node.typeParameters = this.flowParseTypeParameterDeclaration(); + this.expect(10); + tmp = this.flowParseFunctionTypeParams(); + node.params = tmp.params; + node.rest = tmp.rest; + node.this = tmp._this; + this.expect(11); + this.expect(19); + node.returnType = this.flowParseType(); + return this.finishNode(node, "FunctionTypeAnnotation"); + case 10: + this.next(); + if (!this.match(11) && !this.match(21)) { + if (tokenIsIdentifier(this.state.type) || this.match(78)) { + const token = this.lookahead().type; + isGroupedType = token !== 17 && token !== 14; + } else { + isGroupedType = true; + } + } + if (isGroupedType) { + this.state.noAnonFunctionType = false; + type = this.flowParseType(); + this.state.noAnonFunctionType = oldNoAnonFunctionType; + if (this.state.noAnonFunctionType || !(this.match(12) || this.match(11) && this.lookahead().type === 19)) { + this.expect(11); + return type; + } else { + this.eat(12); + } + } + if (type) { + tmp = this.flowParseFunctionTypeParams([this.reinterpretTypeAsFunctionTypeParam(type)]); + } else { + tmp = this.flowParseFunctionTypeParams(); + } + node.params = tmp.params; + node.rest = tmp.rest; + node.this = tmp._this; + this.expect(11); + this.expect(19); + node.returnType = this.flowParseType(); + node.typeParameters = null; + return this.finishNode(node, "FunctionTypeAnnotation"); + case 131: + 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(132)) { + return this.parseLiteralAtNode(-this.state.value, "NumberLiteralTypeAnnotation", node); + } + if (this.match(133)) { + return this.parseLiteralAtNode(-this.state.value, "BigIntLiteralTypeAnnotation", node); + } + throw this.raise(FlowErrors.UnexpectedSubtractionOperand, { + at: this.state.startLoc + }); + } + this.unexpected(); + return; + case 132: + return this.parseLiteral(this.state.value, "NumberLiteralTypeAnnotation"); + case 133: + 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(127)) { + return this.flowParseInterfaceType(); + } + return this.flowIdentToTypeAnnotation(startLoc, node, this.parseIdentifier()); + } + } + 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 === 130 && 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(127)) { + const lookahead = this.lookahead(); + if (tokenIsKeywordOrIdentifier(lookahead.type)) { + const node = this.startNode(); + this.next(); + return this.flowParseInterface(node); + } + } else if (this.shouldParseEnums() && this.isContextual(124)) { + 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 (tokenIsFlowInterfaceOrTypeOrOpaque(type) || this.shouldParseEnums() && type === 124) { + return !this.state.containsEsc; + } + return super.shouldParseExportDeclaration(); + } + isExportDefaultSpecifier() { + const { + type + } = this.state; + if (tokenIsFlowInterfaceOrTypeOrOpaque(type) || this.shouldParseEnums() && type === 124) { + return this.state.containsEsc; + } + return super.isExportDefaultSpecifier(); + } + parseExportDefaultExpression() { + if (this.shouldParseEnums() && this.isContextual(124)) { + 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, { + at: state.startLoc + }); + } + if (failed && valid.length === 1) { + this.state = state; + noArrowAt.push(valid[0].start); + this.state.noArrowAt = noArrowAt; + ({ + consequent, + failed + } = this.tryParseConditionalConsequent()); + } + } + this.getArrowLikeExpressions(consequent, true); + this.state.noArrowAt = originalNoArrowAt; + this.expect(14); + node.test = expr; + node.consequent = consequent; + node.alternate = this.forwardNoArrowParamsConversionAt(node, () => this.parseMaybeAssign(undefined, undefined)); + return this.finishNode(node, "ConditionalExpression"); + } + tryParseConditionalConsequent() { + this.state.noArrowParamsConversionAt.push(this.state.start); + const consequent = this.parseMaybeAssignAllowIn(); + const failed = !this.match(14); + this.state.noArrowParamsConversionAt.pop(); + return { + consequent, + failed + }; + } + getArrowLikeExpressions(node, disallowInvalid) { + const stack = [node]; + const arrows = []; + while (stack.length !== 0) { + const node = stack.pop(); + if (node.type === "ArrowFunctionExpression") { + if (node.typeParameters || !node.returnType) { + this.finishArrowValidation(node); + } else { + arrows.push(node); + } + stack.push(node.body); + } else if (node.type === "ConditionalExpression") { + stack.push(node.consequent); + stack.push(node.alternate); + } + } + if (disallowInvalid) { + arrows.forEach(node => this.finishArrowValidation(node)); + return [arrows, []]; + } + return partition(arrows, node => node.params.every(param => this.isAssignable(param, true))); + } + finishArrowValidation(node) { + var _node$extra; + this.toAssignableList(node.params, (_node$extra = node.extra) == null ? void 0 : _node$extra.trailingCommaLoc, false); + this.scope.enter(2 | 4); + super.checkParams(node, false, true); + this.scope.exit(); + } + forwardNoArrowParamsConversionAt(node, parse) { + let result; + if (this.state.noArrowParamsConversionAt.indexOf(node.start) !== -1) { + this.state.noArrowParamsConversionAt.push(this.state.start); + result = parse(); + this.state.noArrowParamsConversionAt.pop(); + } else { + result = parse(); + } + return result; + } + parseParenItem(node, startLoc) { + node = super.parseParenItem(node, startLoc); + if (this.eat(17)) { + node.optional = true; + this.resetEndLocation(node); + } + if (this.match(14)) { + const typeCastNode = this.startNodeAt(startLoc); + typeCastNode.expression = node; + typeCastNode.typeAnnotation = this.flowParseTypeAnnotation(); + return this.finishNode(typeCastNode, "TypeCastExpression"); + } + return node; + } + assertModuleNodeAllowed(node) { + if (node.type === "ImportDeclaration" && (node.importKind === "type" || node.importKind === "typeof") || node.type === "ExportNamedDeclaration" && node.exportKind === "type" || node.type === "ExportAllDeclaration" && node.exportKind === "type") { + return; + } + super.assertModuleNodeAllowed(node); + } + parseExportDeclaration(node) { + if (this.isContextual(128)) { + 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(129)) { + node.exportKind = "type"; + const declarationNode = this.startNode(); + this.next(); + return this.flowParseOpaqueType(declarationNode, false); + } else if (this.isContextual(127)) { + node.exportKind = "type"; + const declarationNode = this.startNode(); + this.next(); + return this.flowParseInterface(declarationNode); + } else if (this.shouldParseEnums() && this.isContextual(124)) { + 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(128) && 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(123)) { + 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, { + at: startLoc + }); + } else if (member.value) { + this.raise(FlowErrors.DeclareClassFieldInitializer, { + at: 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, { + at: this.state.curPosition(), + identifierName: fullWord + }); + } + this.finishToken(130, 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, { + at: expr.typeAnnotation + }); + } + } + return exprList; + } + parseArrayLike(close, canBePattern, isTuple, refExpressionErrors) { + const node = super.parseArrayLike(close, canBePattern, isTuple, refExpressionErrors); + if (canBePattern && !this.state.maybeInArrowParameters) { + this.toReferencedList(node.elements); + } + return node; + } + isValidLVal(type, isParenthesized, binding) { + return type === "TypeCastExpression" || super.isValidLVal(type, 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, { + at: 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, { + at: method + }); + } + } + } + pushClassPrivateMethod(classBody, method, isGenerator, isAsync) { + if (method.variance) { + this.unexpected(method.variance.loc.start); + } + delete method.variance; + if (this.match(47)) { + method.typeParameters = this.flowParseTypeParameterDeclaration(); + } + super.pushClassPrivateMethod(classBody, method, isGenerator, isAsync); + } + parseClassSuper(node) { + super.parseClassSuper(node); + if (node.superClass && this.match(47)) { + node.superTypeParameters = this.flowParseTypeParameterInstantiation(); + } + if (this.isContextual(111)) { + 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, { + at: param + }); + } else if (this.isThisParam(param)) { + this.raise(FlowErrors.SetterMayNotHaveThisParam, { + at: 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; + } + parseAssignableListItemTypes(param) { + if (this.eat(17)) { + if (param.type !== "Identifier") { + this.raise(FlowErrors.PatternIsOptional, { + at: param + }); + } + if (this.isThisParam(param)) { + this.raise(FlowErrors.ThisParamMayNotBeOptional, { + at: param + }); + } + param.optional = true; + } + if (this.match(14)) { + param.typeAnnotation = this.flowParseTypeAnnotation(); + } else if (this.isThisParam(param)) { + this.raise(FlowErrors.ThisParamAnnotationRequired, { + at: param + }); + } + if (this.match(29) && this.isThisParam(param)) { + this.raise(FlowErrors.ThisParamNoDefault, { + at: 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, { + at: node.typeAnnotation + }); + } + return node; + } + checkImportReflection(node) { + super.checkImportReflection(node); + if (node.module && node.importKind !== "value") { + this.raise(FlowErrors.ImportReflectionHasImportType, { + at: 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(128)) { + 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 = 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, { + at: specifier, + importName: firstIdent.value + }); + } + specifier.imported = firstIdent; + specifier.importKind = null; + } + if (this.eatContextual(93)) { + specifier.local = this.parseIdentifier(); + } else { + isBinding = true; + specifier.local = cloneIdentifier(specifier.imported); + } + } + const specifierIsTypeImport = hasTypeImportKind(specifier); + if (isInTypeOnlyImport && specifierIsTypeImport) { + this.raise(FlowErrors.ImportTypeShorthandOnlyInPureImport, { + at: 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(140) || 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, { + at: 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, { + at: typeParameters + }); + } + return super.parseMaybeAssign(refExpressionErrors, afterLeftParse); + } + parseArrow(node) { + if (this.match(14)) { + const result = this.tryParse(() => { + const oldNoAnonFunctionType = this.state.noAnonFunctionType; + this.state.noAnonFunctionType = true; + const typeNode = this.startNode(); + [typeNode.typeAnnotation, node.predicate] = this.flowParseTypeAndPredicateInitialiser(); + this.state.noAnonFunctionType = oldNoAnonFunctionType; + if (this.canInsertSemicolon()) this.unexpected(); + if (!this.match(19)) this.unexpected(); + return typeNode; + }); + if (result.thrown) return null; + if (result.error) this.state = result.failState; + node.returnType = result.node.typeAnnotation ? this.finishNode(result.node, "TypeAnnotation") : null; + } + return super.parseArrow(node); + } + shouldParseArrow(params) { + return this.match(14) || super.shouldParseArrow(params); + } + setArrowFunctionParameters(node, params) { + if (this.state.noArrowParamsConversionAt.indexOf(node.start) !== -1) { + node.params = params; + } else { + super.setArrowFunctionParameters(node, params); + } + } + checkParams(node, allowDuplicates, isArrowFunction, strictModeChanged = true) { + if (isArrowFunction && this.state.noArrowParamsConversionAt.indexOf(node.start) !== -1) { + return; + } + for (let i = 0; i < node.params.length; i++) { + if (this.isThisParam(node.params[i]) && i > 0) { + this.raise(FlowErrors.ThisParamMustBeFirst, { + at: node.params[i] + }); + } + } + super.checkParams(node, allowDuplicates, isArrowFunction, strictModeChanged); + } + parseParenAndDistinguishExpression(canBeArrow) { + return super.parseParenAndDistinguishExpression(canBeArrow && this.state.noArrowAt.indexOf(this.state.start) === -1); + } + parseSubscripts(base, startLoc, noCalls) { + if (base.type === "Identifier" && base.name === "async" && this.state.noArrowAt.indexOf(startLoc.index) !== -1) { + this.next(); + const node = this.startNodeAt(startLoc); + node.callee = base; + node.arguments = super.parseCallExpressionArguments(11, false); + base = this.finishNode(node, "CallExpression"); + } else if (base.type === "Identifier" && base.name === "async" && this.match(47)) { + const state = this.state.clone(); + const arrow = this.tryParse(abort => this.parseAsyncArrowWithTypeParameters(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.flowParseTypeParameterInstantiation(); + this.expect(10); + node.arguments = this.parseCallExpressionArguments(11, false); + node.optional = true; + return this.finishCallExpression(node, true); + } else if (!noCalls && this.shouldParseTypes() && this.match(47)) { + const node = this.startNodeAt(startLoc); + node.callee = base; + const result = this.tryParse(() => { + node.typeArguments = this.flowParseTypeParameterInstantiationCallOrNew(); + this.expect(10); + node.arguments = super.parseCallExpressionArguments(11, false); + if (subscriptState.optionalChainMember) { + node.optional = false; + } + return this.finishCallExpression(node, subscriptState.optionalChainMember); + }); + if (result.node) { + if (result.error) this.state = result.failState; + return result.node; + } + } + return super.parseSubscript(base, 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, { + at: this.state.curPosition() + }); + } + return fileNode; + } + skipBlockComment() { + if (this.hasPlugin("flowComments") && this.skipFlowComment()) { + if (this.state.hasFlowComment) { + throw this.raise(FlowErrors.NestedFlowComment, { + at: this.state.startLoc + }); + } + this.hasFlowCommentCompletion(); + 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, { + at: this.state.curPosition() + }); + } + } + flowEnumErrorBooleanMemberNotInitialized(loc, { + enumName, + memberName + }) { + this.raise(FlowErrors.EnumBooleanMemberNotInitialized, { + at: loc, + memberName, + enumName + }); + } + flowEnumErrorInvalidMemberInitializer(loc, enumContext) { + return this.raise(!enumContext.explicitType ? FlowErrors.EnumInvalidMemberInitializerUnknownType : enumContext.explicitType === "symbol" ? FlowErrors.EnumInvalidMemberInitializerSymbolType : FlowErrors.EnumInvalidMemberInitializerPrimaryType, Object.assign({ + at: loc + }, enumContext)); + } + flowEnumErrorNumberMemberNotInitialized(loc, { + enumName, + memberName + }) { + this.raise(FlowErrors.EnumNumberMemberNotInitialized, { + at: loc, + enumName, + memberName + }); + } + flowEnumErrorStringMemberInconsistentlyInitailized(node, { + enumName + }) { + this.raise(FlowErrors.EnumStringMemberInconsistentlyInitailized, { + at: node, + enumName + }); + } + flowEnumMemberInit() { + const startLoc = this.state.startLoc; + const endOfInit = () => this.match(12) || this.match(8); + switch (this.state.type) { + case 132: + { + const literal = this.parseNumericLiteral(this.state.value); + if (endOfInit()) { + return { + type: "number", + loc: literal.loc.start, + value: literal + }; + } + return { + type: "invalid", + loc: startLoc + }; + } + case 131: + { + 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, { + at: id, + memberName, + suggestion: memberName[0].toUpperCase() + memberName.slice(1), + enumName + }); + } + if (seenNames.has(memberName)) { + this.raise(FlowErrors.EnumDuplicateMemberName, { + at: id, + memberName, + enumName + }); + } + seenNames.add(memberName); + const context = { + enumName, + explicitType, + memberName + }; + memberNode.id = id; + switch (init.type) { + case "boolean": + { + this.flowEnumCheckExplicitTypeMismatch(init.loc, context, "boolean"); + memberNode.init = init.value; + members.booleanMembers.push(this.finishNode(memberNode, "EnumBooleanMember")); + break; + } + case "number": + { + this.flowEnumCheckExplicitTypeMismatch(init.loc, context, "number"); + memberNode.init = init.value; + members.numberMembers.push(this.finishNode(memberNode, "EnumNumberMember")); + break; + } + case "string": + { + this.flowEnumCheckExplicitTypeMismatch(init.loc, context, "string"); + memberNode.init = init.value; + members.stringMembers.push(this.finishNode(memberNode, "EnumStringMember")); + break; + } + case "invalid": + { + throw this.flowEnumErrorInvalidMemberInitializer(init.loc, context); + } + case "none": + { + switch (explicitType) { + case "boolean": + this.flowEnumErrorBooleanMemberNotInitialized(init.loc, context); + break; + case "number": + this.flowEnumErrorNumberMemberNotInitialized(init.loc, context); + break; + default: + members.defaultedMembers.push(this.finishNode(memberNode, "EnumDefaultedMember")); + } + } + } + if (!this.match(8)) { + this.expect(12); + } + } + return { + members, + hasUnknownMembers + }; + } + flowEnumStringMembers(initializedMembers, defaultedMembers, { + enumName + }) { + if (initializedMembers.length === 0) { + return defaultedMembers; + } else if (defaultedMembers.length === 0) { + return initializedMembers; + } else if (defaultedMembers.length > initializedMembers.length) { + for (const member of initializedMembers) { + this.flowEnumErrorStringMemberInconsistentlyInitailized(member, { + enumName + }); + } + return defaultedMembers; + } else { + for (const member of defaultedMembers) { + this.flowEnumErrorStringMemberInconsistentlyInitailized(member, { + enumName + }); + } + return initializedMembers; + } + } + flowEnumParseExplicitType({ + enumName + }) { + if (!this.eatContextual(101)) return null; + if (!tokenIsIdentifier(this.state.type)) { + throw this.raise(FlowErrors.EnumInvalidExplicitTypeUnknownSupplied, { + at: this.state.startLoc, + enumName + }); + } + const { + value + } = this.state; + this.next(); + if (value !== "boolean" && value !== "number" && value !== "string" && value !== "symbol") { + this.raise(FlowErrors.EnumInvalidExplicitType, { + at: 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, { + at: nameLoc, + enumName + }); + return empty(); + } + } + } + } + flowParseEnumDeclaration(node) { + const id = this.parseIdentifier(); + node.id = id; + node.body = this.flowEnumBody(this.startNode(), id); + return this.finishNode(node, "EnumDeclaration"); + } + isLookaheadToken_lt() { + const next = this.nextTokenStart(); + if (this.input.charCodeAt(next) === 60) { + const afterNext = this.input.charCodeAt(next + 1); + return afterNext !== 60 && afterNext !== 61; + } + return false; + } + maybeUnwrapTypeCastExpression(node) { + return node.type === "TypeCastExpression" ? node.expression : node; + } +}; +const entities = { + __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 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, { + at: this.state.startLoc + }); + } + const ch = this.input.charCodeAt(this.state.pos); + switch (ch) { + case 60: + case 123: + if (this.state.pos === this.state.start) { + if (ch === 60 && this.state.canStartJSXElement) { + ++this.state.pos; + this.finishToken(140); + } else { + super.getTokenFromCode(ch); + } + return; + } + out += this.input.slice(chunkStart, this.state.pos); + this.finishToken(139, 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, { + at: this.state.startLoc + }); + } + const ch = this.input.charCodeAt(this.state.pos); + if (ch === quote) break; + if (ch === 38) { + out += this.input.slice(chunkStart, this.state.pos); + out += this.jsxReadEntity(); + chunkStart = this.state.pos; + } else if (isNewLine(ch)) { + out += this.input.slice(chunkStart, this.state.pos); + out += this.jsxReadNewLine(false); + chunkStart = this.state.pos; + } else { + ++this.state.pos; + } + } + out += this.input.slice(chunkStart, this.state.pos++); + this.finishToken(131, 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(138, this.input.slice(start, this.state.pos)); + } + jsxParseIdentifier() { + const node = this.startNode(); + if (this.match(138)) { + 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, { + at: node + }); + } + return node; + case 140: + case 131: + return this.parseExprAtom(); + default: + throw this.raise(JsxErrors.UnsupportedJsxValue, { + at: 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(141)) { + return this.finishNode(node, "JSXOpeningFragment"); + } + node.name = this.jsxParseElementName(); + return this.jsxParseOpeningElementAfterName(node); + } + jsxParseOpeningElementAfterName(node) { + const attributes = []; + while (!this.match(56) && !this.match(141)) { + attributes.push(this.jsxParseAttribute()); + } + node.attributes = attributes; + node.selfClosing = this.eat(56); + this.expect(141); + return this.finishNode(node, "JSXOpeningElement"); + } + jsxParseClosingElementAt(startLoc) { + const node = this.startNodeAt(startLoc); + if (this.eat(141)) { + return this.finishNode(node, "JSXClosingFragment"); + } + node.name = this.jsxParseElementName(); + this.expect(141); + 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 140: + startLoc = this.state.startLoc; + this.next(); + if (this.eat(56)) { + closingElement = this.jsxParseClosingElementAt(startLoc); + break contents; + } + children.push(this.jsxParseElementAt(startLoc)); + break; + case 139: + children.push(this.parseExprAtom()); + break; + case 5: + { + const node = this.startNode(); + this.setContext(types.brace); + this.next(); + if (this.match(21)) { + children.push(this.jsxParseSpreadChild(node)); + } else { + children.push(this.jsxParseExpressionContainer(node, types.j_expr)); + } + break; + } + default: + this.unexpected(); + } + } + if (isFragment(openingElement) && !isFragment(closingElement) && closingElement !== null) { + this.raise(JsxErrors.MissingClosingTagFragment, { + at: closingElement + }); + } else if (!isFragment(openingElement) && isFragment(closingElement)) { + this.raise(JsxErrors.MissingClosingTagElement, { + at: closingElement, + openingTagName: getQualifiedJSXName(openingElement.name) + }); + } else if (!isFragment(openingElement) && !isFragment(closingElement)) { + if (getQualifiedJSXName(closingElement.name) !== getQualifiedJSXName(openingElement.name)) { + this.raise(JsxErrors.MissingClosingTagElement, { + at: 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, { + at: 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(139)) { + return this.parseLiteral(this.state.value, "JSXText"); + } else if (this.match(140)) { + return this.jsxParseElement(); + } else if (this.match(47) && this.input.charCodeAt(this.state.pos) !== 33) { + this.replaceToken(140); + 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(141); + 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(140); + return; + } + super.getTokenFromCode(code); + } + updateContext(prevType) { + const { + context, + type + } = this.state; + if (type === 56 && prevType === 140) { + context.splice(-2, 2, types.j_cTag); + this.state.canStartJSXElement = false; + } else if (type === 140) { + context.push(types.j_oTag); + } else if (type === 141) { + const out = context[context.length - 1]; + if (out === types.j_oTag && prevType === 56 || out === types.j_cTag) { + context.pop(); + this.state.canStartJSXElement = context[context.length - 1] === types.j_expr; + } else { + this.setContext(types.j_expr); + this.state.canStartJSXElement = true; + } + } else { + this.state.canStartJSXElement = tokenComesBeforeExpression(type); + } + } +}; +class TypeScriptScope extends Scope { + constructor(...args) { + super(...args); + this.types = new Set(); + this.enums = new Set(); + this.constEnums = new Set(); + this.classes = new Set(); + this.exportOnlyBindings = new Set(); + } +} +class TypeScriptScopeHandler extends ScopeHandler { + constructor(...args) { + super(...args); + this.importsStack = []; + } + createScope(flags) { + this.importsStack.push(new Set()); + return new TypeScriptScope(flags); + } + enter(flags) { + if (flags == 256) { + this.importsStack.push(new Set()); + } + super.enter(flags); + } + exit() { + const flags = super.exit(); + if (flags == 256) { + 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, { + at: loc, + identifierName: name + }); + } + this.importsStack[this.importsStack.length - 1].add(name); + return; + } + const scope = this.currentScope(); + if (bindingType & 1024) { + this.maybeExportDefined(scope, name); + scope.exportOnlyBindings.add(name); + return; + } + super.declareName(name, bindingType, loc); + if (bindingType & 2) { + if (!(bindingType & 1)) { + this.checkRedeclarationInScope(scope, name, bindingType, loc); + this.maybeExportDefined(scope, name); + } + scope.types.add(name); + } + if (bindingType & 256) scope.enums.add(name); + if (bindingType & 512) { + scope.constEnums.add(name); + } + if (bindingType & 128) scope.classes.add(name); + } + isRedeclaredInScope(scope, name, bindingType) { + if (scope.enums.has(name)) { + if (bindingType & 256) { + const isConst = !!(bindingType & 512); + const wasConst = scope.constEnums.has(name); + return isConst !== wasConst; + } + return true; + } + if (bindingType & 128 && scope.classes.has(name)) { + if (scope.lexical.has(name)) { + return !!(bindingType & 1); + } else { + return false; + } + } + if (bindingType & 2 && scope.types.has(name)) { + 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]; + if (scope.types.has(name) || scope.exportOnlyBindings.has(name)) return; + } + super.checkLocalExport(id); + } +} +const getOwn$1 = (object, key) => Object.hasOwnProperty.call(object, key) && object[key]; +const unwrapParenthesizedExpression = node => { + return node.type === "ParenthesizedExpression" ? unwrapParenthesizedExpression(node.expression) : node; +}; +class LValParser extends NodeUtils { + toAssignable(node, isLHS = false) { + var _node$extra, _node$extra3; + let parenthesized = undefined; + if (node.type === "ParenthesizedExpression" || (_node$extra = node.extra) != null && _node$extra.parenthesized) { + parenthesized = unwrapParenthesizedExpression(node); + if (isLHS) { + if (parenthesized.type === "Identifier") { + this.expressionScope.recordArrowParameterBindingError(Errors.InvalidParenthesizedAssignment, { + at: node + }); + } else if (parenthesized.type !== "MemberExpression") { + this.raise(Errors.InvalidParenthesizedAssignment, { + at: node + }); + } + } else { + this.raise(Errors.InvalidParenthesizedAssignment, { + at: node + }); + } + } + switch (node.type) { + case "Identifier": + case "ObjectPattern": + case "ArrayPattern": + case "AssignmentPattern": + case "RestElement": + break; + case "ObjectExpression": + node.type = "ObjectPattern"; + for (let i = 0, length = node.properties.length, last = length - 1; i < length; i++) { + var _node$extra2; + const prop = node.properties[i]; + const isLast = i === last; + this.toAssignableObjectExpressionProp(prop, isLast, isLHS); + if (isLast && prop.type === "RestElement" && (_node$extra2 = node.extra) != null && _node$extra2.trailingCommaLoc) { + this.raise(Errors.RestTrailingComma, { + at: node.extra.trailingCommaLoc + }); + } + } + break; + case "ObjectProperty": + { + const { + key, + value + } = node; + if (this.isPrivateName(key)) { + this.classScope.usePrivateName(this.getPrivateNameSV(key), key.loc.start); + } + this.toAssignable(value, isLHS); + break; + } + case "SpreadElement": + { + throw new Error("Internal @babel/parser error (this is a bug, please report it)." + " SpreadElement should be converted by .toAssignable's caller."); + } + case "ArrayExpression": + node.type = "ArrayPattern"; + this.toAssignableList(node.elements, (_node$extra3 = node.extra) == null ? void 0 : _node$extra3.trailingCommaLoc, isLHS); + break; + case "AssignmentExpression": + if (node.operator !== "=") { + this.raise(Errors.MissingEqInAssignment, { + at: node.left.loc.end + }); + } + node.type = "AssignmentPattern"; + delete node.operator; + this.toAssignable(node.left, isLHS); + break; + case "ParenthesizedExpression": + this.toAssignable(parenthesized, isLHS); + break; + } + } + toAssignableObjectExpressionProp(prop, isLast, isLHS) { + if (prop.type === "ObjectMethod") { + this.raise(prop.kind === "get" || prop.kind === "set" ? Errors.PatternHasAccessor : Errors.PatternHasMethod, { + at: prop.key + }); + } else if (prop.type === "SpreadElement") { + prop.type = "RestElement"; + const arg = prop.argument; + this.checkToRestConversion(arg, false); + this.toAssignable(arg, isLHS); + if (!isLast) { + this.raise(Errors.RestTrailingComma, { + at: 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; + if (elt.type === "SpreadElement") { + elt.type = "RestElement"; + const arg = elt.argument; + this.checkToRestConversion(arg, true); + this.toAssignable(arg, isLHS); + } else { + this.toAssignable(elt, isLHS); + } + if (elt.type === "RestElement") { + if (i < end) { + this.raise(Errors.RestTrailingComma, { + at: elt + }); + } else if (trailingCommaLoc) { + this.raise(Errors.RestTrailingComma, { + at: trailingCommaLoc + }); + } + } + } + } + isAssignable(node, isBinding) { + switch (node.type) { + case "Identifier": + case "ObjectPattern": + case "ArrayPattern": + case "AssignmentPattern": + case "RestElement": + return true; + case "ObjectExpression": + { + const last = node.properties.length - 1; + return node.properties.every((prop, i) => { + return prop.type !== "ObjectMethod" && (i === last || prop.type !== "SpreadElement") && this.isAssignable(prop); + }); + } + case "ObjectProperty": + return this.isAssignable(node.value); + case "SpreadElement": + return this.isAssignable(node.argument); + case "ArrayExpression": + return node.elements.every(element => element === null || this.isAssignable(element)); + case "AssignmentExpression": + return node.operator === "="; + case "ParenthesizedExpression": + return this.isAssignable(node.expression); + case "MemberExpression": + case "OptionalMemberExpression": + return !isBinding; + default: + return false; + } + } + toReferencedList(exprList, isParenthesizedExpr) { + return exprList; + } + toReferencedListDeep(exprList, isParenthesizedExpr) { + this.toReferencedList(exprList, isParenthesizedExpr); + for (const expr of exprList) { + if ((expr == null ? void 0 : expr.type) === "ArrayExpression") { + this.toReferencedListDeep(expr.elements); + } + } + } + parseSpread(refExpressionErrors) { + const node = this.startNode(); + this.next(); + node.argument = this.parseMaybeAssignAllowIn(refExpressionErrors, undefined); + return this.finishNode(node, "SpreadElement"); + } + parseRestBinding() { + const node = this.startNode(); + this.next(); + node.argument = this.parseBindingAtom(); + return this.finishNode(node, "RestElement"); + } + parseBindingAtom() { + switch (this.state.type) { + case 0: + { + const node = this.startNode(); + this.next(); + node.elements = this.parseBindingList(3, 93, 1); + return this.finishNode(node, "ArrayPattern"); + } + case 5: + return this.parseObjectLike(8, true); + } + 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)) { + elts.push(this.parseAssignableListItemTypes(this.parseRestBinding(), flags)); + if (!this.checkCommaAfterRest(closeCharCode)) { + this.expect(close); + break; + } + } else { + const decorators = []; + if (this.match(26) && this.hasPlugin("decorators")) { + this.raise(Errors.UnsupportedParameterDecorator, { + at: this.state.startLoc + }); + } + while (this.match(26)) { + decorators.push(this.parseDecorator()); + } + elts.push(this.parseAssignableListItem(flags, decorators)); + } + } + return elts; + } + parseBindingRestProperty(prop) { + this.next(); + prop.argument = this.parseIdentifier(); + this.checkCommaAfterRest(125); + return this.finishNode(prop, "RestElement"); + } + parseBindingProperty() { + const prop = this.startNode(); + const { + type, + startLoc + } = this.state; + if (type === 21) { + return this.parseBindingRestProperty(prop); + } else if (type === 136) { + 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); + } + parseAssignableListItem(flags, decorators) { + const left = this.parseMaybeDefault(); + this.parseAssignableListItemTypes(left, flags); + const elt = this.parseMaybeDefault(left.loc.start, left); + if (decorators.length) { + left.decorators = decorators; + } + return elt; + } + parseAssignableListItemTypes(param, flags) { + return param; + } + parseMaybeDefault(startLoc, left) { + var _startLoc, _left; + (_startLoc = startLoc) != null ? _startLoc : startLoc = this.state.startLoc; + left = (_left = left) != null ? _left : this.parseBindingAtom(); + if (!this.eat(29)) return left; + const node = this.startNodeAt(startLoc); + node.left = left; + node.right = this.parseMaybeAssignAllowIn(); + return this.finishNode(node, "AssignmentPattern"); + } + isValidLVal(type, isUnparenthesizedInAssign, binding) { + return getOwn$1({ + AssignmentPattern: "left", + RestElement: "argument", + ObjectProperty: "value", + ParenthesizedExpression: "expression", + ArrayPattern: "elements", + ObjectPattern: "properties" + }, type); + } + checkLVal(expression, { + in: ancestor, + binding = 64, + checkClashes = false, + strictModeChanged = false, + hasParenthesizedAncestor = false + }) { + var _expression$extra; + const type = expression.type; + if (this.isObjectMethod(expression)) return; + if (type === "MemberExpression") { + if (binding !== 64) { + this.raise(Errors.InvalidPropertyBindingPattern, { + at: expression + }); + } + return; + } + if (type === "Identifier") { + this.checkIdentifier(expression, binding, strictModeChanged); + const { + name + } = expression; + if (checkClashes) { + if (checkClashes.has(name)) { + this.raise(Errors.ParamDupe, { + at: expression + }); + } else { + checkClashes.add(name); + } + } + return; + } + const validity = this.isValidLVal(type, !(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, { + at: expression, + ancestor + }); + return; + } + const [key, isParenthesizedExpression] = Array.isArray(validity) ? validity : [validity, type === "ParenthesizedExpression"]; + const nextAncestor = type === "ArrayPattern" || type === "ObjectPattern" || type === "ParenthesizedExpression" ? { + type + } : ancestor; + for (const child of [].concat(expression[key])) { + if (child) { + this.checkLVal(child, { + in: nextAncestor, + binding, + checkClashes, + strictModeChanged, + hasParenthesizedAncestor: isParenthesizedExpression + }); + } + } + } + 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, { + at: node + }); + } + } + checkCommaAfterRest(close) { + if (!this.match(12)) { + return false; + } + this.raise(this.lookaheadCharCode() === close ? Errors.RestTrailingComma : Errors.ElementAfterRest, { + at: this.state.startLoc + }); + return true; + } +} +const getOwn = (object, key) => Object.hasOwnProperty.call(object, key) && object[key]; +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.`, + AccesorCannotDeclareThisParameter: "'get' and 'set' accessors cannot declare 'this' parameters.", + AccesorCannotHaveTypeParameters: "An accessor cannot have type parameters.", + AccessorCannotBeOptional: "An 'accessor' property cannot be declared optional.", + ClassMethodHasDeclare: "Class methods cannot have the 'declare' modifier.", + ClassMethodHasReadonly: "Class methods cannot have the 'readonly' modifier.", + ConstInitiailizerMustBeStringOrNumericLiteralOrLiteralEnumReference: "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 ${kind}ters.`, + DeclareClassFieldHasInitializer: "Initializers are not allowed in ambient contexts.", + DeclareFunctionHasImplementation: "An implementation cannot be declared in ambient contexts.", + DuplicateAccessibilityModifier: ({ + modifier + }) => `Accessibility modifier already seen.`, + DuplicateModifier: ({ + modifier + }) => `Duplicate modifier: '${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.", + InvalidModifierOnTypeMember: ({ + modifier + }) => `'${modifier}' modifier cannot appear on a type member.`, + InvalidModifierOnTypeParameter: ({ + modifier + }) => `'${modifier}' modifier cannot appear on a type parameter.`, + InvalidModifierOnTypeParameterPositions: ({ + modifier + }) => `'${modifier}' modifier can only appear on a type parameter of a class, interface or type alias.`, + InvalidModifiersOrder: ({ + orderedModifiers + }) => `'${orderedModifiers[0]}' modifier must precede '${orderedModifiers[1]}' modifier.`, + InvalidPropertyAccessAfterInstantiationExpression: "Invalid property access after an instantiation expression. " + "You can either wrap the instantiation expression in parentheses, or delete the type arguments.", + InvalidTupleMemberLabel: "Tuple members must be labeled with a simple identifier.", + MissingInterfaceName: "'interface' declarations must be followed by an identifier.", + MixedLabeledAndUnlabeledElements: "Tuple members must all have names or all not have names.", + NonAbstractClassHasAbstractMethod: "Abstract methods can only appear within an abstract class.", + NonClassMethodPropertyHasAbstractModifer: "'abstract' modifier can only appear on a class, method, or property declaration.", + OptionalTypeBeforeRequired: "A required element cannot follow an optional element.", + OverrideNotInSubClass: "This member cannot have an 'override' modifier because its containing class does not extend another class.", + PatternIsOptional: "A binding pattern parameter cannot be optional in an implementation signature.", + PrivateElementHasAbstract: "Private elements cannot have the 'abstract' modifier.", + PrivateElementHasAccessibility: ({ + modifier + }) => `Private elements cannot have an accessibility modifier ('${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.", + SetAccesorCannotHaveOptionalParameter: "A 'set' accessor cannot have an optional parameter.", + SetAccesorCannotHaveRestParameter: "A 'set' accessor cannot have rest parameter.", + SetAccesorCannotHaveReturnType: "A 'set' accessor cannot have a return type annotation.", + 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}.` +}); +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(136) || this.isLiteralPropertyName()) && !this.hasPrecedingLineBreak(); + } + tsNextTokenCanFollowModifier() { + this.next(); + return this.tsTokenCanFollowModifier(); + } + tsParseModifier(allowedModifiers, stopOnStartOfClassStaticBlock) { + if (!tokenIsIdentifier(this.state.type) && this.state.type !== 58 && this.state.type !== 75) { + return undefined; + } + const modifier = this.state.value; + if (allowedModifiers.indexOf(modifier) !== -1) { + if (stopOnStartOfClassStaticBlock && this.tsIsStartOfStaticBlocks()) { + return undefined; + } + if (this.tsTryParse(this.tsNextTokenCanFollowModifier.bind(this))) { + return modifier; + } + } + return undefined; + } + tsParseModifiers({ + allowedModifiers, + disallowedModifiers, + stopOnStartOfClassStaticBlock, + errorTemplate = TSErrors.InvalidModifierOnTypeMember + }, modified) { + const enforceOrder = (loc, modifier, before, after) => { + if (modifier === before && modified[after]) { + this.raise(TSErrors.InvalidModifiersOrder, { + at: loc, + orderedModifiers: [before, after] + }); + } + }; + const incompatible = (loc, modifier, mod1, mod2) => { + if (modified[mod1] && modifier === mod2 || modified[mod2] && modifier === mod1) { + this.raise(TSErrors.IncompatibleModifiers, { + at: loc, + modifiers: [mod1, mod2] + }); + } + }; + for (;;) { + const { + startLoc + } = this.state; + const modifier = this.tsParseModifier(allowedModifiers.concat(disallowedModifiers != null ? disallowedModifiers : []), stopOnStartOfClassStaticBlock); + if (!modifier) break; + if (tsIsAccessModifier(modifier)) { + if (modified.accessibility) { + this.raise(TSErrors.DuplicateAccessibilityModifier, { + at: startLoc, + 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, { + at: startLoc, + modifier + }); + } + modified[modifier] = true; + enforceOrder(startLoc, modifier, "in", "out"); + } else { + if (Object.hasOwnProperty.call(modified, modifier)) { + this.raise(TSErrors.DuplicateModifier, { + at: startLoc, + modifier + }); + } else { + enforceOrder(startLoc, modifier, "static", "readonly"); + enforceOrder(startLoc, modifier, "static", "override"); + enforceOrder(startLoc, modifier, "override", "readonly"); + enforceOrder(startLoc, modifier, "abstract", "override"); + incompatible(startLoc, modifier, "declare", "override"); + incompatible(startLoc, modifier, "static", "abstract"); + } + modified[modifier] = true; + } + if (disallowedModifiers != null && disallowedModifiers.includes(modifier)) { + this.raise(errorTemplate, { + at: startLoc, + modifier + }); + } + } + } + tsIsListTerminator(kind) { + switch (kind) { + case "EnumMembers": + case "TypeMembers": + return this.match(8); + case "HeritageClauseElement": + return this.match(5); + case "TupleElementTypes": + return this.match(3); + case "TypeParametersOrArguments": + return this.match(48); + } + } + tsParseList(kind, parseElement) { + const result = []; + while (!this.tsIsListTerminator(kind)) { + result.push(parseElement()); + } + return result; + } + tsParseDelimitedList(kind, parseElement, refTrailingCommaPos) { + return nonNull(this.tsParseDelimitedListWorker(kind, parseElement, true, refTrailingCommaPos)); + } + tsParseDelimitedListWorker(kind, parseElement, expectSuccess, refTrailingCommaPos) { + const result = []; + let trailingCommaPos = -1; + for (;;) { + if (this.tsIsListTerminator(kind)) { + break; + } + trailingCommaPos = -1; + const element = parseElement(); + if (element == null) { + return undefined; + } + result.push(element); + if (this.eat(12)) { + trailingCommaPos = this.state.lastTokStart; + continue; + } + if (this.tsIsListTerminator(kind)) { + break; + } + if (expectSuccess) { + this.expect(12); + } + return undefined; + } + if (refTrailingCommaPos) { + refTrailingCommaPos.value = trailingCommaPos; + } + return result; + } + tsParseBracketedList(kind, parseElement, bracket, skipFirstToken, refTrailingCommaPos) { + if (!skipFirstToken) { + if (bracket) { + this.expect(0); + } else { + this.expect(47); + } + } + const result = this.tsParseDelimitedList(kind, parseElement, refTrailingCommaPos); + if (bracket) { + this.expect(3); + } else { + this.expect(48); + } + return result; + } + tsParseImportType() { + const node = this.startNode(); + this.expect(83); + this.expect(10); + if (!this.match(131)) { + this.raise(TSErrors.UnsupportedImportTypeArgument, { + at: this.state.startLoc + }); + } + node.argument = super.parseExprAtom(); + this.expect(11); + if (this.eat(16)) { + node.qualifier = this.tsParseEntityName(); + } + if (this.match(47)) { + node.typeParameters = this.tsParseTypeArguments(); + } + return this.finishNode(node, "TSImportType"); + } + tsParseEntityName(allowReservedWords = true) { + let entity = this.parseIdentifier(allowReservedWords); + while (this.eat(16)) { + const node = this.startNodeAtNode(entity); + node.left = entity; + node.right = this.parseIdentifier(allowReservedWords); + entity = this.finishNode(node, "TSQualifiedName"); + } + return entity; + } + tsParseTypeReference() { + const node = this.startNode(); + node.typeName = this.tsParseEntityName(); + 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(); + } + 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(140)) { + 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, { + at: 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, { + at: 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; + const nodeAny = node; + if (this.match(10) || this.match(47)) { + if (readonly) { + this.raise(TSErrors.ReadonlyForMethodSignature, { + at: node + }); + } + const method = nodeAny; + if (method.kind && this.match(47)) { + this.raise(TSErrors.AccesorCannotHaveTypeParameters, { + at: this.state.curPosition() + }); + } + this.tsFillSignature(14, method); + this.tsParseTypeMemberSemicolon(); + const paramsKey = "parameters"; + const returnTypeKey = "typeAnnotation"; + if (method.kind === "get") { + if (method[paramsKey].length > 0) { + this.raise(Errors.BadGetterArity, { + at: this.state.curPosition() + }); + if (this.isThisParam(method[paramsKey][0])) { + this.raise(TSErrors.AccesorCannotDeclareThisParameter, { + at: this.state.curPosition() + }); + } + } + } else if (method.kind === "set") { + if (method[paramsKey].length !== 1) { + this.raise(Errors.BadSetterArity, { + at: this.state.curPosition() + }); + } else { + const firstParameter = method[paramsKey][0]; + if (this.isThisParam(firstParameter)) { + this.raise(TSErrors.AccesorCannotDeclareThisParameter, { + at: this.state.curPosition() + }); + } + if (firstParameter.type === "Identifier" && firstParameter.optional) { + this.raise(TSErrors.SetAccesorCannotHaveOptionalParameter, { + at: this.state.curPosition() + }); + } + if (firstParameter.type === "RestElement") { + this.raise(TSErrors.SetAccesorCannotHaveRestParameter, { + at: this.state.curPosition() + }); + } + } + if (method[returnTypeKey]) { + this.raise(TSErrors.SetAccesorCannotHaveReturnType, { + at: method[returnTypeKey] + }); + } + } else { + method.kind = "method"; + } + return this.finishNode(method, "TSMethodSignature"); + } else { + const property = nodeAny; + if (readonly) property.readonly = true; + const type = this.tsTryParseTypeAnnotation(); + if (type) property.typeAnnotation = type; + this.tsParseTypeMemberSemicolon(); + return this.finishNode(property, "TSPropertySignature"); + } + } + tsParseTypeMember() { + const node = this.startNode(); + if (this.match(10) || this.match(47)) { + return this.tsParseSignatureMember("TSCallSignatureDeclaration", node); + } + if (this.match(77)) { + const id = this.startNode(); + this.next(); + if (this.match(10) || this.match(47)) { + return this.tsParseSignatureMember("TSConstructSignatureDeclaration", node); + } else { + node.key = this.createIdentifier(id, "new"); + return this.tsParsePropertyOrMethodSignature(node, false); + } + } + this.tsParseModifiers({ + 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); + } + 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(120); + } + if (this.isContextual(120)) { + this.next(); + } + if (!this.match(0)) { + return false; + } + this.next(); + if (!this.tsIsIdentifier()) { + return false; + } + this.next(); + return this.match(58); + } + tsParseMappedTypeParameter() { + const node = this.startNode(); + node.name = this.tsParseTypeParameterName(); + node.constraint = this.tsExpectThenParseType(58); + return this.finishNode(node, "TSTypeParameter"); + } + tsParseMappedType() { + const node = this.startNode(); + this.expect(5); + if (this.match(53)) { + node.readonly = this.state.value; + this.next(); + this.expectContextual(120); + } else if (this.eatContextual(120)) { + node.readonly = true; + } + this.expect(0); + node.typeParameter = this.tsParseMappedTypeParameter(); + node.nameType = this.eatContextual(93) ? this.tsParseType() : null; + this.expect(3); + if (this.match(53)) { + node.optional = this.state.value; + this.next(); + this.expect(17); + } else if (this.eat(17)) { + node.optional = true; + } + node.typeAnnotation = this.tsTryParseType(); + this.semicolon(); + this.expect(8); + return this.finishNode(node, "TSMappedType"); + } + tsParseTupleType() { + const node = this.startNode(); + node.elementTypes = this.tsParseBracketedList("TupleElementTypes", this.tsParseTupleElementType.bind(this), true, false); + let seenOptionalElement = false; + let labeledElements = null; + node.elementTypes.forEach(elementNode => { + var _labeledElements; + const { + type + } = elementNode; + if (seenOptionalElement && type !== "TSRestType" && type !== "TSOptionalType" && !(type === "TSNamedTupleMember" && elementNode.optional)) { + this.raise(TSErrors.OptionalTypeBeforeRequired, { + at: elementNode + }); + } + seenOptionalElement || (seenOptionalElement = type === "TSNamedTupleMember" && elementNode.optional || type === "TSOptionalType"); + let checkType = type; + if (type === "TSRestType") { + elementNode = elementNode.typeAnnotation; + checkType = elementNode.type; + } + const isLabeled = checkType === "TSNamedTupleMember"; + (_labeledElements = labeledElements) != null ? _labeledElements : labeledElements = isLabeled; + if (labeledElements !== isLabeled) { + this.raise(TSErrors.MixedLabeledAndUnlabeledElements, { + at: elementNode + }); + } + }); + return this.finishNode(node, "TSTupleType"); + } + tsParseTupleElementType() { + const { + startLoc + } = this.state; + const rest = this.eat(21); + 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 startLoc = this.state.startLoc; + 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.startNodeAtNode(label); + labeledNode.optional = optional; + labeledNode.label = label; + labeledNode.elementType = type; + if (this.eat(17)) { + labeledNode.optional = true; + this.raise(TSErrors.TupleOptionalAfterType, { + at: this.state.lastTokStartLoc + }); + } + } else { + labeledNode = this.startNodeAtNode(type); + labeledNode.optional = optional; + this.raise(TSErrors.InvalidTupleMemberLabel, { + at: type + }); + labeledNode.label = type; + labeledNode.elementType = this.tsParseType(); + } + type = this.finishNode(labeledNode, "TSNamedTupleMember"); + } else if (optional) { + const optionalTypeNode = this.startNodeAtNode(type); + optionalTypeNode.typeAnnotation = type; + type = this.finishNode(optionalTypeNode, "TSOptionalType"); + } + if (rest) { + const restNode = this.startNodeAt(startLoc); + restNode.typeAnnotation = type; + type = this.finishNode(restNode, "TSRestType"); + } + return type; + } + tsParseParenthesizedType() { + const node = this.startNode(); + this.expect(10); + node.typeAnnotation = this.tsParseType(); + this.expect(11); + return this.finishNode(node, "TSParenthesizedType"); + } + tsParseFunctionOrConstructorType(type, abstract) { + const node = this.startNode(); + if (type === "TSConstructorType") { + node.abstract = !!abstract; + if (abstract) this.next(); + this.next(); + } + this.tsInAllowConditionalTypesContext(() => this.tsFillSignature(19, node)); + return this.finishNode(node, type); + } + tsParseLiteralTypeNode() { + const node = this.startNode(); + switch (this.state.type) { + case 132: + case 133: + case 131: + 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(114) && !this.hasPrecedingLineBreak()) { + return this.tsParseThisTypePredicate(thisKeyword); + } else { + return thisKeyword; + } + } + tsParseNonArrayType() { + switch (this.state.type) { + case 131: + case 132: + case 133: + case 85: + case 86: + return this.tsParseLiteralTypeNode(); + case 53: + if (this.state.value === "-") { + const node = this.startNode(); + const nextToken = this.lookahead(); + if (nextToken.type !== 132 && nextToken.type !== 133) { + 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(); + } + } + } + this.unexpected(); + } + tsParseArrayTypeOrHigher() { + let type = this.tsParseNonArrayType(); + while (!this.hasPrecedingLineBreak() && this.eat(0)) { + if (this.match(3)) { + const node = this.startNodeAtNode(type); + node.elementType = type; + this.expect(3); + type = this.finishNode(node, "TSArrayType"); + } else { + const node = this.startNodeAtNode(type); + node.objectType = type; + node.indexType = this.tsParseType(); + this.expect(3); + type = this.finishNode(node, "TSIndexedAccessType"); + } + } + return type; + } + tsParseTypeOperator() { + const node = this.startNode(); + const operator = this.state.value; + this.next(); + node.operator = operator; + node.typeAnnotation = this.tsParseTypeOperatorOrHigher(); + if (operator === "readonly") { + this.tsCheckTypeAnnotationForReadOnly(node); + } + return this.finishNode(node, "TSTypeOperator"); + } + tsCheckTypeAnnotationForReadOnly(node) { + switch (node.typeAnnotation.type) { + case "TSTupleType": + case "TSArrayType": + return; + default: + this.raise(TSErrors.UnexpectedReadonly, { + at: node + }); + } + } + tsParseInferType() { + const node = this.startNode(); + this.expectContextual(113); + 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(113) ? 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(114) && !this.hasPrecedingLineBreak()) { + this.next(); + return id; + } + } + tsParseTypePredicateAsserts() { + if (this.state.type !== 107) { + 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, { + at: 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(122) && this.lookahead().type === 77; + } + tsParseNonConditionalType() { + if (this.tsIsStartOfFunctionType()) { + return this.tsParseFunctionOrConstructorType("TSFunctionType"); + } + if (this.match(77)) { + return this.tsParseFunctionOrConstructorType("TSConstructorType"); + } else if (this.isAbstractConstructorSignature()) { + return this.tsParseFunctionOrConstructorType("TSConstructorType", true); + } + return this.tsParseUnionTypeOrHigher(); + } + tsParseTypeAssertion() { + if (this.getPluginOption("typescript", "disallowAmbiguousJSXLike")) { + this.raise(TSErrors.ReservedTypeAssertion, { + at: this.state.startLoc + }); + } + const node = this.startNode(); + 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(); + if (this.match(47)) { + node.typeParameters = this.tsParseTypeArguments(); + } + return this.finishNode(node, "TSExpressionWithTypeArguments"); + }); + if (!delimitedList.length) { + this.raise(TSErrors.EmptyHeritageClauseType, { + at: originalStartLoc, + token + }); + } + return delimitedList; + } + tsParseInterfaceDeclaration(node, properties = {}) { + if (this.hasFollowingLineBreak()) return null; + this.expectContextual(127); + 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, { + at: 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(112) && this.lookahead().type !== 16) { + const node = this.startNode(); + this.next(); + return this.finishNode(node, "TSIntrinsicKeyword"); + } + return this.tsParseType(); + }); + this.semicolon(); + return this.finishNode(node, "TSTypeAliasDeclaration"); + } + tsInNoContext(cb) { + const oldContext = this.state.context; + this.state.context = [oldContext[0]]; + try { + return cb(); + } finally { + this.state.context = oldContext; + } + } + tsInType(cb) { + const oldInType = this.state.inType; + this.state.inType = true; + try { + return cb(); + } finally { + this.state.inType = oldInType; + } + } + 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(131) ? 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(124); + 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"); + } + 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(256); + this.prodParam.enter(PARAM); + node.body = this.tsParseModuleBlock(); + this.prodParam.exit(); + this.scope.exit(); + } + return this.finishNode(node, "TSModuleDeclaration"); + } + tsParseAmbientExternalModuleDeclaration(node) { + if (this.isContextual(110)) { + node.global = true; + node.id = this.parseIdentifier(); + } else if (this.match(131)) { + node.id = super.parseStringLiteral(this.state.value); + } else { + this.unexpected(); + } + if (this.match(5)) { + this.scope.enter(256); + this.prodParam.enter(PARAM); + 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, { + at: moduleReference + }); + } + node.moduleReference = moduleReference; + this.semicolon(); + return this.finishNode(node, "TSImportEqualsDeclaration"); + } + tsIsExternalModuleReference() { + return this.isContextual(117) && this.lookaheadCharCode() === 40; + } + tsParseModuleReference() { + return this.tsIsExternalModuleReference() ? this.tsParseExternalModuleReference() : this.tsParseEntityName(false); + } + tsParseExternalModuleReference() { + const node = this.startNode(); + this.expectContextual(117); + this.expect(10); + if (!this.match(131)) { + 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(nany) { + if (this.isLineTerminator()) { + return; + } + let startType = this.state.type; + let kind; + if (this.isContextual(99)) { + startType = 74; + kind = "let"; + } + return this.tsInAmbientContext(() => { + switch (startType) { + case 68: + nany.declare = true; + return super.parseFunctionStatement(nany, false, false); + case 80: + nany.declare = true; + return this.parseClass(nany, true, false); + case 124: + return this.tsParseEnumDeclaration(nany, { + declare: true + }); + case 110: + return this.tsParseAmbientExternalModuleDeclaration(nany); + case 75: + case 74: + if (!this.match(75) || !this.isLookaheadContextual("enum")) { + nany.declare = true; + return this.parseVarStatement(nany, kind || this.state.value, true); + } + this.expect(75); + return this.tsParseEnumDeclaration(nany, { + const: true, + declare: true + }); + case 127: + { + const result = this.tsParseInterfaceDeclaration(nany, { + declare: true + }); + if (result) return result; + } + default: + if (tokenIsIdentifier(startType)) { + return this.tsParseDeclaration(nany, this.state.value, true, null); + } + } + }); + } + tsTryParseExportDeclaration() { + return this.tsParseDeclaration(this.startNode(), this.state.value, true, null); + } + tsParseExpressionStatement(node, expr, decorators) { + switch (expr.name) { + case "declare": + { + const declaration = this.tsTryParseDeclare(node); + if (declaration) { + declaration.declare = true; + } + return declaration; + } + case "global": + if (this.match(5)) { + this.scope.enter(256); + this.prodParam.enter(PARAM); + const mod = node; + mod.global = true; + mod.id = expr; + mod.body = this.tsParseModuleBlock(); + this.scope.exit(); + this.prodParam.exit(); + return this.finishNode(mod, "TSModuleDeclaration"); + } + break; + default: + return this.tsParseDeclaration(node, expr.name, false, decorators); + } + } + tsParseDeclaration(node, value, next, decorators) { + switch (value) { + case "abstract": + if (this.tsCheckLineTerminator(next) && (this.match(80) || tokenIsIdentifier(this.state.type))) { + return this.tsParseAbstractDeclaration(node, decorators); + } + break; + case "module": + if (this.tsCheckLineTerminator(next)) { + if (this.match(131)) { + return this.tsParseAmbientExternalModuleDeclaration(node); + } else if (tokenIsIdentifier(this.state.type)) { + return this.tsParseModuleOrNamespaceDeclaration(node); + } + } + break; + case "namespace": + if (this.tsCheckLineTerminator(next) && tokenIsIdentifier(this.state.type)) { + return this.tsParseModuleOrNamespaceDeclaration(node); + } + break; + case "type": + if (this.tsCheckLineTerminator(next) && tokenIsIdentifier(this.state.type)) { + return this.tsParseTypeAliasDeclaration(node); + } + break; + } + } + tsCheckLineTerminator(next) { + if (next) { + if (this.hasFollowingLineBreak()) return false; + this.next(); + return true; + } + return !this.isLineTerminator(); + } + tsTryParseGenericAsyncArrowFunction(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.tsInNoContext(() => { + this.expect(47); + return this.tsParseDelimitedList("TypeParametersOrArguments", this.tsParseType.bind(this)); + })); + if (node.params.length === 0) { + this.raise(TSErrors.EmptyTypeArguments, { + at: 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(); + } + parseAssignableListItem(flags, decorators) { + const startLoc = 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, { + at: startLoc + }); + } + const left = this.parseMaybeDefault(); + this.parseAssignableListItemTypes(left, flags); + 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, { + at: 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, { + at: 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, { + at: 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, { + at: node.typeAnnotation + }); + } + }); + } + toReferencedList(exprList, isInParens) { + this.tsCheckForInvalidTypeCasts(exprList); + return exprList; + } + parseArrayLike(close, canBePattern, isTuple, refExpressionErrors) { + const node = super.parseArrayLike(close, canBePattern, 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) { + 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(11, false); + 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 && 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" && (this.match(16) || this.match(18) && this.lookaheadCharCode() !== 40)) { + this.raise(TSErrors.InvalidPropertyAccessAfterInstantiationExpression, { + at: this.state.startLoc + }); + } + 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(118)))) { + const node = this.startNodeAt(leftStartLoc); + node.expression = left; + node.typeAnnotation = this.tsInType(() => { + this.next(); + if (this.match(75)) { + if (isSatisfies) { + this.raise(Errors.UnexpectedKeyword, { + at: 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, { + at: node.specifiers[0].loc.start + }); + } + } + checkDuplicateExports() {} + isPotentialImportPhase(isExport) { + if (super.isPotentialImportPhase(isExport)) return true; + if (this.isContextual(128)) { + 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(131)) { + 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(128)) { + 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, { + at: importNode + }); + } + return importNode; + } + parseExport(node, decorators) { + if (this.match(83)) { + this.next(); + let maybeDefaultIdentifier = null; + if (this.isContextual(128) && this.isPotentialImportPhase(false)) { + maybeDefaultIdentifier = this.parseMaybeImportPhase(node, false); + } else { + node.importKind = "value"; + } + return this.tsParseImportEqualsDeclaration(node, maybeDefaultIdentifier, true); + } 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(126); + decl.id = this.parseIdentifier(); + this.semicolon(); + return this.finishNode(decl, "TSNamespaceExportDeclaration"); + } else { + return super.parseExport(node, decorators); + } + } + isAbstractClass() { + return this.isContextual(122) && this.lookahead().type === 80; + } + parseExportDefaultExpression() { + if (this.isAbstractClass()) { + const cls = this.startNode(); + this.next(); + cls.abstract = true; + return this.parseClass(cls, true, true); + } + if (this.match(127)) { + 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; + for (const { + id, + init + } of declaration.declarations) { + if (!init) continue; + if (kind !== "const" || !!id.typeAnnotation) { + this.raise(TSErrors.InitializerNotAllowedInAmbientContext, { + at: init + }); + } else if (!isValidAmbientConstInitializer(init, this.hasPlugin("estree"))) { + this.raise(TSErrors.ConstInitiailizerMustBeStringOrNumericLiteralOrLiteralEnumReference, { + at: init + }); + } + } + return declaration; + } + parseStatementContent(flags, decorators) { + if (this.match(75) && this.isLookaheadContextual("enum")) { + const node = this.startNode(); + this.expect(75); + return this.tsParseEnumDeclaration(node, { + const: true + }); + } + if (this.isContextual(124)) { + return this.tsParseEnumDeclaration(this.startNode()); + } + if (this.isContextual(127)) { + const result = this.tsParseInterfaceDeclaration(this.startNode()); + if (result) return result; + } + 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(104) && 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, { + at: 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, { + at: member + }); + } + if (member.accessibility) { + this.raise(TSErrors.IndexSignatureHasAccessibility, { + at: member, + modifier: member.accessibility + }); + } + if (member.declare) { + this.raise(TSErrors.IndexSignatureHasDeclare, { + at: member + }); + } + if (member.override) { + this.raise(TSErrors.IndexSignatureHasOverride, { + at: member + }); + } + return; + } + if (!this.state.inAbstractClass && member.abstract) { + this.raise(TSErrors.NonAbstractClassHasAbstractMethod, { + at: member + }); + } + if (member.override) { + if (!state.hadSuperClass) { + this.raise(TSErrors.OverrideNotInSubClass, { + at: 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, { + at: methodOrProp + }); + } + if (methodOrProp.declare && this.match(10)) { + this.raise(TSErrors.ClassMethodHasDeclare, { + at: methodOrProp + }); + } + } + parseExpressionStatement(node, expr, decorators) { + const decl = expr.type === "Identifier" ? this.tsParseExpressionStatement(node, expr, decorators) : undefined; + return decl || super.parseExpressionStatement(node, expr, decorators); + } + shouldParseExportDeclaration() { + if (this.tsIsDeclarationStart()) return true; + return super.shouldParseExportDeclaration(); + } + parseConditional(expr, startLoc, refExpressionErrors) { + if (!this.state.maybeInArrowParameters || !this.match(17)) { + return super.parseConditional(expr, startLoc, refExpressionErrors); + } + const result = this.tryParse(() => super.parseConditional(expr, startLoc)); + if (!result.node) { + if (result.error) { + super.setOptionalParametersError(refExpressionErrors, result.error); + } + return expr; + } + if (result.error) this.state = result.failState; + return result.node; + } + parseParenItem(node, startLoc) { + node = super.parseParenItem(node, startLoc); + if (this.eat(17)) { + node.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(123)) { + return this.tsInAmbientContext(() => this.parseExportDeclaration(node)); + } + const startLoc = this.state.startLoc; + const isDeclare = this.eatContextual(123); + if (isDeclare && (this.isContextual(123) || !this.shouldParseExportDeclaration())) { + throw this.raise(TSErrors.ExpectedAmbientAfterExportDeclare, { + at: 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) { + this.resetStartLocation(declaration, startLoc); + declaration.declare = true; + } + return declaration; + } + parseClassId(node, isStatement, optionalId, bindingType) { + if ((!isStatement || optionalId) && this.isContextual(111)) { + 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, { + at: this.state.startLoc + }); + } + if (node.abstract && this.match(29)) { + const { + key + } = node; + this.raise(TSErrors.AbstractPropertyHasInitializer, { + at: this.state.startLoc, + propertyName: key.type === "Identifier" && !node.computed ? key.name : `[${this.input.slice(key.start, key.end)}]` + }); + } + return super.parseClassProperty(node); + } + parseClassPrivateProperty(node) { + if (node.abstract) { + this.raise(TSErrors.PrivateElementHasAbstract, { + at: node + }); + } + if (node.accessibility) { + this.raise(TSErrors.PrivateElementHasAccessibility, { + at: node, + modifier: node.accessibility + }); + } + this.parseClassPropertyAnnotation(node); + return super.parseClassPrivateProperty(node); + } + parseClassAccessorProperty(node) { + this.parseClassPropertyAnnotation(node); + if (node.optional) { + this.raise(TSErrors.AccessorCannotBeOptional, { + at: 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, { + at: typeParameters + }); + } + const { + declare = false, + kind + } = method; + if (declare && (kind === "get" || kind === "set")) { + this.raise(TSErrors.DeclareAccessor, { + at: 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) return; + super.declareClassPrivateMethodInScope(node, kind); + } + parseClassSuper(node) { + super.parseClassSuper(node); + if (node.superClass && (this.match(47) || this.match(51))) { + node.superTypeParameters = this.tsParseTypeArgumentsInExpression(); + } + if (this.eatContextual(111)) { + 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(140) || 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$extra; + if (node.params.length === 1 && !node.params[0].constraint && !((_node$extra = node.extra) != null && _node$extra.trailingComma) && this.getPluginOption("typescript", "disallowAmbiguousJSXLike")) { + this.raise(TSErrors.ReservedArrowTypeParam, { + at: 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); + } + parseAssignableListItemTypes(param, flags) { + if (!(flags & 2)) return 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, { + at: node + }); + } else { + this.raise(TSErrors.UnexpectedTypeCastInParameter, { + at: 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, isUnparenthesizedInAssign, binding) { + return getOwn({ + TSTypeCastExpression: true, + TSParameterProperty: "parameter", + TSNonNullExpression: "expression", + TSAsExpression: (binding !== 64 || !isUnparenthesizedInAssign) && ["expression", true], + TSSatisfiesExpression: (binding !== 64 || !isUnparenthesizedInAssign) && ["expression", true], + TSTypeAssertion: (binding !== 64 || !isUnparenthesizedInAssign) && ["expression", true] + }, type) || super.isValidLVal(type, isUnparenthesizedInAssign, binding); + } + parseBindingAtom() { + if (this.state.type === 78) { + return this.parseIdentifier(true); + } + return super.parseBindingAtom(); + } + parseMaybeDecoratorArguments(expr) { + if (this.match(47) || this.match(51)) { + const typeArguments = this.tsParseTypeArgumentsInExpression(); + if (this.match(10)) { + const call = super.parseMaybeDecoratorArguments(expr); + call.typeParameters = typeArguments; + return call; + } + this.unexpected(null, 10); + } + return super.parseMaybeDecoratorArguments(expr); + } + checkCommaAfterRest(close) { + if (this.state.isAmbientContext && this.match(12) && this.lookaheadCharCode() === close) { + this.next(); + return false; + } + 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, { + at: 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; + } + toAssignableList(exprList, trailingCommaLoc, isLHS) { + for (let i = 0; i < exprList.length; i++) { + const expr = exprList[i]; + if ((expr == null ? void 0 : expr.type) === "TSTypeCastExpression") { + exprList[i] = this.typeCastToParameter(expr); + } + } + super.toAssignableList(exprList, trailingCommaLoc, 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 oldIsAmbientContext = this.state.isAmbientContext; + this.state.isAmbientContext = true; + try { + return cb(); + } finally { + this.state.isAmbientContext = oldIsAmbientContext; + } + } + 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(127)) { + if (!this.hasFollowingLineBreak()) { + node.abstract = true; + this.raise(TSErrors.NonClassMethodPropertyHasAbstractModifer, { + at: node + }); + return this.tsParseInterfaceDeclaration(node); + } + } else { + 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) { + const hasBody = this.hasPlugin("estree") ? !!method.value.body : !!method.body; + if (hasBody) { + const { + key + } = method; + this.raise(TSErrors.AbstractMethodHasImplementation, { + at: method, + methodName: key.type === "Identifier" && !method.computed ? key.name : `[${this.input.slice(key.start, key.end)}]` + }); + } + } + return method; + } + tsParseTypeParameterName() { + const typeName = this.parseIdentifier(); + return typeName.name; + } + shouldParseAsAmbientContext() { + return !!this.getPluginOption("typescript", "dts"); + } + parse() { + if (this.shouldParseAsAmbientContext()) { + this.state.isAmbientContext = true; + } + return super.parse(); + } + getExpression() { + if (this.shouldParseAsAmbientContext()) { + this.state.isAmbientContext = true; + } + return super.getExpression(); + } + parseExportSpecifier(node, isString, isInTypeExport, isMaybeTypeOnly) { + if (!isString && isMaybeTypeOnly) { + this.parseTypeOnlyImportExportSpecifier(node, false, isInTypeExport); + return this.finishNode(node, "ExportSpecifier"); + } + node.exportKind = "value"; + return super.parseExportSpecifier(node, isString, isInTypeExport, isMaybeTypeOnly); + } + parseImportSpecifier(specifier, importedIsString, isInTypeOnlyImport, isMaybeTypeOnly, 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, { + at: loc + }); + } + node[leftOfAsKey] = leftOfAs; + node[rightOfAsKey] = rightOfAs; + const kindKey = isImport ? "importKind" : "exportKind"; + node[kindKey] = hasTypeSpecifier ? "type" : "value"; + if (canParseAsKeyword && this.eatContextual(93)) { + node[rightOfAsKey] = isImport ? this.parseIdentifier() : this.parseModuleExportName(); + } + if (!node[rightOfAsKey]) { + node[rightOfAsKey] = cloneIdentifier(node[leftOfAsKey]); + } + if (isImport) { + this.checkIdentifier(node[rightOfAsKey], hasTypeSpecifier ? 4098 : 4096); + } + } +}; +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(142)) { + const node = this.startNode(); + this.next(); + this.assertNoSpace(); + node.name = super.parseIdentifier(true); + this.assertNoSpace(); + this.expect(142); + return this.finishPlaceholder(node, expectedNode); + } + } + finishPlaceholder(node, expectedNode) { + const isFinished = !!(node.expectedNode && node.type === "Placeholder"); + node.expectedNode = expectedNode; + return isFinished ? node : this.finishNode(node, "Placeholder"); + } + getTokenFromCode(code) { + if (code === 37 && this.input.charCodeAt(this.state.pos + 1) === 37) { + this.finishOp(142, 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); + } + } + parseBindingAtom() { + return this.parsePlaceholder("Pattern") || super.parseBindingAtom(); + } + isValidLVal(type, isParenthesized, binding) { + return type === "Placeholder" || super.isValidLVal(type, 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 nextToken = this.lookahead(); + if (nextToken.type === 142) { + return true; + } + return false; + } + verifyBreakContinue(node, isBreak) { + if (node.label && 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(); + node.name = expr.name; + return this.finishPlaceholder(node, "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(142) || this.match(5)) { + node.id = placeholder; + } else if (optionalId || !isStatement) { + node.id = null; + node.body = this.finishPlaceholder(placeholder, "ClassBody"); + return this.finishNode(node, type); + } else { + throw this.raise(PlaceholderErrors.ClassNameIsRequired, { + at: this.state.startLoc + }); + } + } else { + this.parseClassId(node, isStatement, optionalId); + } + 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); + if (!this.isContextual(97) && !this.match(12)) { + node.specifiers = []; + node.source = null; + node.declaration = this.finishPlaceholder(placeholder, "Declaration"); + return this.finishNode(node, "ExportNamedDeclaration"); + } + this.expectPlugin("exportDefaultFrom"); + const specifier = this.startNode(); + specifier.exported = placeholder; + node.specifiers = [this.finishNode(specifier, "ExportDefaultSpecifier")]; + return super.parseExport(node, decorators); + } + isExportDefaultSpecifier() { + if (this.match(65)) { + const next = this.nextTokenStart(); + if (this.isUnparsedContextual(next, "from")) { + if (this.input.startsWith(tokenLabelName(142), 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(97) && !this.match(12)) { + node.source = this.finishPlaceholder(placeholder, "StringLiteral"); + this.semicolon(); + return this.finishNode(node, "ImportDeclaration"); + } + const specifier = this.startNodeAtNode(placeholder); + specifier.local = placeholder; + node.specifiers.push(this.finishNode(specifier, "ImportDefaultSpecifier")); + if (this.eat(12)) { + const hasStarImport = this.maybeParseStarImportSpecifier(node); + if (!hasStarImport) this.parseNamedImportSpecifiers(node); + } + this.expectContextual(97); + node.source = this.parseImportSource(); + this.semicolon(); + return this.finishNode(node, "ImportDeclaration"); + } + parseImportSource() { + return this.parsePlaceholder("StringLiteral") || super.parseImportSource(); + } + assertNoSpace() { + if (this.state.start > this.state.lastTokEndLoc.index) { + this.raise(PlaceholderErrors.UnexpectedSpace, { + at: 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); + identifier.type = "V8IntrinsicIdentifier"; + if (this.match(10)) { + return identifier; + } + } + this.unexpected(v8IntrinsicStartLoc); + } + } + parseExprAtom(refExpressionErrors) { + return this.parseV8Intrinsic() || super.parseExprAtom(refExpressionErrors); + } +}; +function hasPlugin(plugins, expectedConfig) { + const [expectedName, expectedOptions] = typeof expectedConfig === "string" ? [expectedConfig, {}] : expectedConfig; + const expectedKeys = Object.keys(expectedOptions); + const expectedOptionsIsEmpty = expectedKeys.length === 0; + return plugins.some(p => { + if (typeof p === "string") { + return expectedOptionsIsEmpty && p === expectedName; + } else { + const [pluginName, pluginOptions] = p; + if (pluginName !== expectedName) { + return false; + } + for (const key of expectedKeys) { + if (pluginOptions[key] !== expectedOptions[key]) { + return false; + } + } + return true; + } + }); +} +function getPluginOption(plugins, name, option) { + const plugin = plugins.find(plugin => { + if (Array.isArray(plugin)) { + return plugin[0] === name; + } else { + return plugin === name; + } + }); + if (plugin && Array.isArray(plugin) && plugin.length > 1) { + return plugin[1][option]; + } + return null; +} +const PIPELINE_PROPOSALS = ["minimal", "fsharp", "hack", "smart"]; +const TOPIC_TOKENS = ["^^", "@@", "^", "%", "#"]; +const RECORD_AND_TUPLE_SYNTAX_TYPES = ["hash", "bar"]; +function validatePlugins(plugins) { + if (hasPlugin(plugins, "decorators")) { + if (hasPlugin(plugins, "decorators-legacy")) { + throw new Error("Cannot use the decorators and decorators-legacy plugin together"); + } + const decoratorsBeforeExport = getPluginOption(plugins, "decorators", "decoratorsBeforeExport"); + if (decoratorsBeforeExport != null && typeof decoratorsBeforeExport !== "boolean") { + throw new Error("'decoratorsBeforeExport' must be a boolean, if specified."); + } + const allowCallParenthesized = getPluginOption(plugins, "decorators", "allowCallParenthesized"); + if (allowCallParenthesized != null && typeof allowCallParenthesized !== "boolean") { + throw new Error("'allowCallParenthesized' must be a boolean."); + } + } + if (hasPlugin(plugins, "flow") && hasPlugin(plugins, "typescript")) { + throw new Error("Cannot combine flow and typescript plugins."); + } + if (hasPlugin(plugins, "placeholders") && hasPlugin(plugins, "v8intrinsic")) { + throw new Error("Cannot combine placeholders and v8intrinsic plugins."); + } + if (hasPlugin(plugins, "pipelineOperator")) { + const proposal = getPluginOption(plugins, "pipelineOperator", "proposal"); + if (!PIPELINE_PROPOSALS.includes(proposal)) { + const proposalList = PIPELINE_PROPOSALS.map(p => `"${p}"`).join(", "); + throw new Error(`"pipelineOperator" requires "proposal" option whose value must be one of: ${proposalList}.`); + } + const tupleSyntaxIsHash = hasPlugin(plugins, ["recordAndTuple", { + syntaxType: "hash" + }]); + if (proposal === "hack") { + if (hasPlugin(plugins, "placeholders")) { + throw new Error("Cannot combine placeholders plugin and Hack-style pipes."); + } + if (hasPlugin(plugins, "v8intrinsic")) { + throw new Error("Cannot combine v8intrinsic plugin and Hack-style pipes."); + } + const topicToken = getPluginOption(plugins, "pipelineOperator", "topicToken"); + if (!TOPIC_TOKENS.includes(topicToken)) { + const tokenList = TOPIC_TOKENS.map(t => `"${t}"`).join(", "); + throw new Error(`"pipelineOperator" in "proposal": "hack" mode also requires a "topicToken" option whose value must be one of: ${tokenList}.`); + } + if (topicToken === "#" && tupleSyntaxIsHash) { + throw new Error('Plugin conflict between `["pipelineOperator", { proposal: "hack", topicToken: "#" }]` and `["recordAndtuple", { syntaxType: "hash"}]`.'); + } + } else if (proposal === "smart" && tupleSyntaxIsHash) { + throw new Error('Plugin conflict between `["pipelineOperator", { proposal: "smart" }]` and `["recordAndtuple", { syntaxType: "hash"}]`.'); + } + } + if (hasPlugin(plugins, "moduleAttributes")) { + { + if (hasPlugin(plugins, "importAssertions") || hasPlugin(plugins, "importAttributes")) { + throw new Error("Cannot combine importAssertions, importAttributes and moduleAttributes plugins."); + } + const moduleAttributesVersionPluginOption = getPluginOption(plugins, "moduleAttributes", "version"); + if (moduleAttributesVersionPluginOption !== "may-2020") { + throw new Error("The 'moduleAttributes' plugin requires a 'version' option," + " representing the last proposal update. Currently, the" + " only supported value is 'may-2020'."); + } + } + } + if (hasPlugin(plugins, "importAssertions") && hasPlugin(plugins, "importAttributes")) { + throw new Error("Cannot combine importAssertions and importAttributes plugins."); + } + if (hasPlugin(plugins, "recordAndTuple") && getPluginOption(plugins, "recordAndTuple", "syntaxType") != null && !RECORD_AND_TUPLE_SYNTAX_TYPES.includes(getPluginOption(plugins, "recordAndTuple", "syntaxType"))) { + throw new Error("The 'syntaxType' option of the 'recordAndTuple' plugin must be one of: " + RECORD_AND_TUPLE_SYNTAX_TYPES.map(p => `'${p}'`).join(", ")); + } + if (hasPlugin(plugins, "asyncDoExpressions") && !hasPlugin(plugins, "doExpressions")) { + const error = new Error("'asyncDoExpressions' requires 'doExpressions', please add 'doExpressions' to parser plugins."); + error.missingPlugins = "doExpressions"; + throw error; + } +} +const mixinPlugins = { + estree, + jsx, + flow, + typescript, + v8intrinsic, + placeholders +}; +const mixinPluginNames = Object.keys(mixinPlugins); +const defaultOptions = { + sourceType: "script", + sourceFilename: undefined, + startColumn: 0, + startLine: 1, + allowAwaitOutsideFunction: false, + allowReturnOutsideFunction: false, + allowNewTargetOutsideFunction: false, + allowImportExportEverywhere: false, + allowSuperOutsideMethod: false, + allowUndeclaredExports: false, + plugins: [], + strictMode: null, + ranges: false, + tokens: false, + createParenthesizedExpressions: false, + errorRecovery: false, + attachComment: true, + annexB: true +}; +function getOptions(opts) { + if (opts == null) { + return Object.assign({}, defaultOptions); + } + if (opts.annexB != null && opts.annexB !== false) { + throw new Error("The `annexB` option can only be set to `false`."); + } + const options = {}; + for (const key of Object.keys(defaultOptions)) { + var _opts$key; + options[key] = (_opts$key = opts[key]) != null ? _opts$key : defaultOptions[key]; + } + return options; +} +class ExpressionParser extends LValParser { + checkProto(prop, isRecord, protoRef, refExpressionErrors) { + if (prop.type === "SpreadElement" || this.isObjectMethod(prop) || prop.computed || prop.shorthand) { + return; + } + const key = prop.key; + const name = key.type === "Identifier" ? key.name : key.value; + if (name === "__proto__") { + if (isRecord) { + this.raise(Errors.RecordNoProto, { + at: key + }); + return; + } + if (protoRef.used) { + if (refExpressionErrors) { + if (refExpressionErrors.doubleProtoLoc === null) { + refExpressionErrors.doubleProtoLoc = key.loc.start; + } + } else { + this.raise(Errors.DuplicateProto, { + at: key + }); + } + } + protoRef.used = true; + } + } + shouldExitDescending(expr, potentialArrowAt) { + return expr.type === "ArrowFunctionExpression" && expr.start === potentialArrowAt; + } + getExpression() { + this.enterInitialScopes(); + this.nextToken(); + const expr = this.parseExpression(); + if (!this.match(137)) { + this.unexpected(); + } + this.finalizeRemainingComments(); + expr.comments = this.state.comments; + expr.errors = this.state.errors; + if (this.options.tokens) { + expr.tokens = this.tokens; + } + return expr; + } + parseExpression(disallowIn, refExpressionErrors) { + if (disallowIn) { + return this.disallowInAnd(() => this.parseExpressionBase(refExpressionErrors)); + } + return this.allowInAnd(() => this.parseExpressionBase(refExpressionErrors)); + } + parseExpressionBase(refExpressionErrors) { + const 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, resultError) { + var _resultError$loc; + refExpressionErrors.optionalParametersLoc = (_resultError$loc = resultError == null ? void 0 : resultError.loc) != null ? _resultError$loc : this.state.startLoc; + } + parseMaybeAssign(refExpressionErrors, afterLeftParse) { + const startLoc = this.state.startLoc; + if (this.isContextual(106)) { + if (this.prodParam.hasYield) { + let left = this.parseYield(); + 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; + } + } else { + node.left = left; + } + this.next(); + node.right = this.parseMaybeAssign(); + this.checkLVal(left, { + in: this.finishNode(node, "AssignmentExpression") + }); + return node; + } else if (ownExpressionErrors) { + this.checkExpressionErrors(refExpressionErrors, true); + } + 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(136) ? 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, { + at: 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, { + at: 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, { + at: 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 "smart": + return this.withTopicBindingContext(() => { + if (this.prodParam.hasYield && this.isContextual(106)) { + throw this.raise(Errors.PipeBodyIsTighter, { + at: this.state.startLoc + }); + } + return this.parseSmartPipelineBodyInStyle(this.parseExprOpBaseRightExpr(op, prec), startLoc); + }); + case "fsharp": + return this.withSoloAwaitPermittingContext(() => { + return this.parseFSharpPipelineBody(prec); + }); + } + 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, { + at: startLoc, + type: body.type + }); + } + if (!this.topicReferenceWasUsedInCurrentContext()) { + this.raise(Errors.PipeTopicUnused, { + at: startLoc + }); + } + return body; + } + checkExponentialAfterUnary(node) { + if (this.match(57)) { + this.raise(Errors.UnexpectedTokenUnaryExponentiation, { + at: node.argument + }); + } + } + parseMaybeUnary(refExpressionErrors, sawUnary) { + const startLoc = this.state.startLoc; + const isAwait = this.isContextual(96); + if (isAwait && this.isAwaitAllowed()) { + 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, { + at: node + }); + } else if (this.hasPropertyAsPrivateName(arg)) { + this.raise(Errors.DeletePrivateField, { + at: node + }); + } + } + if (!update) { + if (!sawUnary) { + this.checkExponentialAfterUnary(node); + } + return this.finishNode(node, "UnaryExpression"); + } + } + const expr = this.parseUpdate(node, update, refExpressionErrors); + if (isAwait) { + const { + type + } = this.state; + const startsExpr = this.hasPlugin("v8intrinsic") ? tokenCanStartExpression(type) : tokenCanStartExpression(type) && !this.match(54); + if (startsExpr && !this.isAmbiguousAwait()) { + this.raiseOverwrite(Errors.AwaitNotInAsyncContext, { + at: startLoc + }); + return this.parseAwait(startLoc); + } + } + return expr; + } + parseUpdate(node, update, refExpressionErrors) { + if (update) { + const updateExpressionNode = node; + this.checkLVal(updateExpressionNode.argument, { + in: 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, { + in: 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, { + at: this.state.startLoc + }); + if (this.lookaheadCharCode() === 40) { + state.stop = true; + return base; + } + } + 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 { + 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(136)) { + if (base.type === "Super") { + this.raise(Errors.SuperPrivateField, { + at: startLoc + }); + } + this.classScope.usePrivateName(this.state.value, this.state.startLoc); + node.property = this.parsePrivateName(); + } else { + node.property = this.parseIdentifier(true); + } + if (state.optionalChainMember) { + node.optional = optional; + return this.finishNode(node, "OptionalMemberExpression"); + } else { + return this.finishNode(node, "MemberExpression"); + } + } + parseBind(base, 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(11); + } else { + node.arguments = this.parseCallExpressionArguments(11, base.type === "Import", 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, { + at: startLoc + }); + } + return this.finishNode(node, "TaggedTemplateExpression"); + } + atPossibleAsyncArrow(base) { + return base.type === "Identifier" && base.name === "async" && this.state.lastTokEndLoc.index === base.end && !this.canInsertSemicolon() && base.end - base.start === 5 && base.start === this.state.potentialArrowAt; + } + expectImportAttributesPlugin() { + if (!this.hasPlugin("importAssertions")) { + this.expectPlugin("importAttributes"); + } + } + finishCallExpression(node, optional) { + if (node.callee.type === "Import") { + if (node.arguments.length === 2) { + { + if (!this.hasPlugin("moduleAttributes")) { + this.expectImportAttributesPlugin(); + } + } + } + if (node.arguments.length === 0 || node.arguments.length > 2) { + this.raise(Errors.ImportCallArity, { + at: node, + maxArgumentCount: this.hasPlugin("importAttributes") || this.hasPlugin("importAssertions") || this.hasPlugin("moduleAttributes") ? 2 : 1 + }); + } else { + for (const arg of node.arguments) { + if (arg.type === "SpreadElement") { + this.raise(Errors.ImportCallSpreadArgument, { + at: arg + }); + } + } + } + } + return this.finishNode(node, optional ? "OptionalCallExpression" : "CallExpression"); + } + parseCallExpressionArguments(close, dynamicImport, allowPlaceholder, nodeForExtra, refExpressionErrors) { + const elts = []; + let first = true; + const oldInFSharpPipelineDirectBody = this.state.inFSharpPipelineDirectBody; + this.state.inFSharpPipelineDirectBody = false; + while (!this.eat(close)) { + if (first) { + first = false; + } else { + this.expect(12); + if (this.match(close)) { + if (dynamicImport && !this.hasPlugin("importAttributes") && !this.hasPlugin("importAssertions") && !this.hasPlugin("moduleAttributes")) { + this.raise(Errors.ImportCallArgumentTrailingComma, { + at: this.state.lastTokStartLoc + }); + } + if (nodeForExtra) { + this.addTrailingCommaExtraToNode(nodeForExtra); + } + this.next(); + break; + } + } + elts.push(this.parseExprListItem(false, refExpressionErrors, allowPlaceholder)); + } + this.state.inFSharpPipelineDirectBody = oldInFSharpPipelineDirectBody; + return elts; + } + shouldParseAsyncArrow() { + return this.match(19) && !this.canInsertSemicolon(); + } + parseAsyncArrowFromCallExpression(node, call) { + var _call$extra; + this.resetPreviousNodeTrailingComments(call); + this.expect(19); + this.parseArrowExpression(node, call.arguments, true, (_call$extra = call.extra) == null ? void 0 : _call$extra.trailingCommaLoc); + if (call.innerComments) { + setInnerComments(node, call.innerComments); + } + if (call.callee.trailingComments) { + setInnerComments(node, call.callee.trailingComments); + } + return node; + } + parseNoCallExpr() { + const 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.parseImportMetaProperty(node); + } + if (!this.match(10)) { + this.raise(Errors.UnsupportedImport, { + at: this.state.lastTokStartLoc + }); + } + return this.finishNode(node, "Import"); + case 78: + node = this.startNode(); + this.next(); + return this.finishNode(node, "ThisExpression"); + case 90: + { + return this.parseDo(this.startNode(), false); + } + case 56: + case 31: + { + this.readRegexp(); + return this.parseRegExpLiteral(this.state.value); + } + case 132: + return this.parseNumericLiteral(this.state.value); + case 133: + return this.parseBigIntLiteral(this.state.value); + case 134: + return this.parseDecimalLiteral(this.state.value); + case 131: + return this.parseStringLiteral(this.state.value); + case 84: + return this.parseNullLiteral(); + case 85: + return this.parseBooleanLiteral(true); + case 86: + return this.parseBooleanLiteral(false); + case 10: + { + const canBeArrow = this.state.potentialArrowAt === this.state.start; + return this.parseParenAndDistinguishExpression(canBeArrow); + } + case 2: + case 1: + { + return this.parseArrayLike(this.state.type === 2 ? 4 : 3, false, true); + } + case 0: + { + return this.parseArrayLike(3, true, false, refExpressionErrors); + } + case 6: + case 7: + { + return this.parseObjectLike(this.state.type === 6 ? 9 : 8, false, true); + } + case 5: + { + return this.parseObjectLike(8, false, false, refExpressionErrors); + } + case 68: + return this.parseFunctionOrFunctionSent(); + case 26: + 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, { + at: callee + }); + } + } + case 136: + { + this.raise(Errors.PrivateInExpectedIn, { + at: 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); + } + this.unexpected(); + break; + } + case 47: + { + const lookaheadCh = this.input.codePointAt(this.nextTokenStart()); + if (isIdentifierStart(lookaheadCh) || lookaheadCh === 62) { + this.expectOnePlugin(["jsx", "flow", "typescript"]); + } else { + this.unexpected(); + } + break; + } + default: + if (tokenIsIdentifier(type)) { + if (this.isContextual(125) && 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 { + this.unexpected(); + } + } + } + parseTopicReferenceThenEqualsSign(topicTokenType, topicTokenValue) { + const pipeProposal = this.getPluginOption("pipelineOperator", "proposal"); + if (pipeProposal) { + this.state.type = topicTokenType; + this.state.value = topicTokenValue; + this.state.pos--; + this.state.end--; + this.state.endLoc = createPositionWithColumnOffset(this.state.endLoc, -1); + return this.parseTopicReference(pipeProposal); + } else { + this.unexpected(); + } + } + parseTopicReference(pipeProposal) { + const node = this.startNode(); + const startLoc = this.state.startLoc; + const tokenType = this.state.type; + this.next(); + return this.finishTopicReference(node, startLoc, pipeProposal, tokenType); + } + finishTopicReference(node, startLoc, pipeProposal, tokenType) { + if (this.testTopicReferenceConfiguration(pipeProposal, startLoc, tokenType)) { + const nodeType = pipeProposal === "smart" ? "PipelinePrimaryTopicReference" : "TopicReference"; + if (!this.topicReferenceIsAllowedInCurrentContext()) { + this.raise(pipeProposal === "smart" ? Errors.PrimaryTopicNotAllowed : Errors.PipeTopicUnbound, { + at: startLoc + }); + } + this.registerTopicReference(); + return this.finishNode(node, nodeType); + } else { + throw this.raise(Errors.PipeTopicUnconfiguredToken, { + at: 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, { + at: 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, { + at: 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(PARAM_AWAIT); + node.body = this.parseBlock(); + this.prodParam.exit(); + } else { + node.body = this.parseBlock(); + } + this.state.labels = oldLabels; + return this.finishNode(node, "DoExpression"); + } + parseSuper() { + const node = this.startNode(); + this.next(); + if (this.match(10) && !this.scope.allowDirectSuper && !this.options.allowSuperOutsideMethod) { + this.raise(Errors.SuperNotAllowed, { + at: node + }); + } else if (!this.scope.allowSuper && !this.options.allowSuperOutsideMethod) { + this.raise(Errors.UnexpectedSuper, { + at: node + }); + } + if (!this.match(10) && !this.match(0) && !this.match(16)) { + this.raise(Errors.UnsupportedSuper, { + at: 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(102)) { + this.expectPlugin("functionSent"); + } else if (!this.hasPlugin("functionSent")) { + this.unexpected(); + } + return this.parseMetaProperty(node, meta, "sent"); + } + return this.parseFunction(node); + } + parseMetaProperty(node, meta, propertyName) { + node.meta = meta; + const containsEsc = this.state.containsEsc; + node.property = this.parseIdentifier(true); + if (node.property.name !== propertyName || containsEsc) { + this.raise(Errors.UnsupportedMetaProperty, { + at: node.property, + target: meta.name, + onlyValidPropertyName: propertyName + }); + } + return this.finishNode(node, "MetaProperty"); + } + parseImportMetaProperty(node) { + const id = this.createIdentifier(this.startNodeAtNode(node), "import"); + this.next(); + if (this.isContextual(100)) { + if (!this.inModule) { + this.raise(Errors.ImportMetaOutsideModule, { + at: id + }); + } + this.sawUnambiguousESM = true; + } + return this.parseMetaProperty(node, id, "meta"); + } + parseLiteralAtNode(value, type, node) { + this.addExtra(node, "rawValue", value); + this.addExtra(node, "raw", this.input.slice(node.start, this.state.end)); + node.value = value; + this.next(); + return this.finishNode(node, type); + } + parseLiteral(value, type) { + const node = this.startNode(); + return this.parseLiteralAtNode(value, type, node); + } + parseStringLiteral(value) { + return this.parseLiteral(value, "StringLiteral"); + } + parseNumericLiteral(value) { + return this.parseLiteral(value, "NumericLiteral"); + } + parseBigIntLiteral(value) { + return this.parseLiteral(value, "BigIntLiteral"); + } + parseDecimalLiteral(value) { + return this.parseLiteral(value, "DecimalLiteral"); + } + parseRegExpLiteral(value) { + const node = this.parseLiteral(value.value, "RegExpLiteral"); + node.pattern = value.pattern; + node.flags = value.flags; + return node; + } + parseBooleanLiteral(value) { + const node = this.startNode(); + node.value = value; + this.next(); + return this.finishNode(node, "BooleanLiteral"); + } + parseNullLiteral() { + const node = this.startNode(); + this.next(); + return this.finishNode(node, "NullLiteral"); + } + parseParenAndDistinguishExpression(canBeArrow) { + const 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.parseMaybeAssignAllowIn(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.options.createParenthesizedExpressions) { + 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.inNonArrowFunction && !this.scope.inClass && !this.options.allowNewTargetOutsideFunction) { + this.raise(Errors.UnexpectedNewTarget, { + at: 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) { + node.callee = this.parseNoCallExpr(); + if (node.callee.type === "Import") { + this.raise(Errors.ImportCallNotNewExpression, { + at: node.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, { + at: 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(); + node.expressions = []; + let curElt = this.parseTemplateElement(isTagged); + node.quasis = [curElt]; + while (!curElt.tail) { + node.expressions.push(this.parseTemplateSubstitution()); + this.readTemplateContinuation(); + node.quasis.push(curElt = this.parseTemplateElement(isTagged)); + } + return this.finishNode(node, "TemplateLiteral"); + } + parseTemplateSubstitution() { + return this.parseExpression(); + } + parseObjectLike(close, isPattern, isRecord, refExpressionErrors) { + if (isRecord) { + this.expectPlugin("recordAndTuple"); + } + const oldInFSharpPipelineDirectBody = this.state.inFSharpPipelineDirectBody; + this.state.inFSharpPipelineDirectBody = false; + const propHash = Object.create(null); + let first = true; + const node = this.startNode(); + node.properties = []; + this.next(); + while (!this.match(close)) { + if (first) { + first = false; + } else { + this.expect(12); + if (this.match(close)) { + this.addTrailingCommaExtraToNode(node); + break; + } + } + let prop; + if (isPattern) { + prop = this.parseBindingProperty(); + } else { + prop = this.parsePropertyDefinition(refExpressionErrors); + this.checkProto(prop, isRecord, propHash, refExpressionErrors); + } + if (isRecord && !this.isObjectProperty(prop) && prop.type !== "SpreadElement") { + this.raise(Errors.InvalidRecordProperty, { + at: prop + }); + } + if (prop.shorthand) { + this.addExtra(prop, "shorthand", true); + } + node.properties.push(prop); + } + this.next(); + this.state.inFSharpPipelineDirectBody = oldInFSharpPipelineDirectBody; + let type = "ObjectExpression"; + if (isPattern) { + type = "ObjectPattern"; + } else if (isRecord) { + type = "RecordExpression"; + } + return this.finishNode(node, type); + } + addTrailingCommaExtraToNode(node) { + this.addExtra(node, "trailingComma", this.state.lastTokStart); + this.addExtra(node, "trailingCommaLoc", this.state.lastTokStartLoc, false); + } + maybeAsyncOrAccessorProp(prop) { + return !prop.computed && prop.key.type === "Identifier" && (this.isLiteralPropertyName() || this.match(0) || this.match(55)); + } + parsePropertyDefinition(refExpressionErrors) { + let decorators = []; + if (this.match(26)) { + if (this.hasPlugin("decorators")) { + this.raise(Errors.UnsupportedPropertyDecorator, { + at: 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; + const key = this.parsePropertyName(prop, refExpressionErrors); + if (!isGenerator && !containsEsc && this.maybeAsyncOrAccessorProp(prop)) { + const keyName = key.name; + if (keyName === "async" && !this.hasPrecedingLineBreak()) { + isAsync = true; + this.resetPreviousNodeTrailingComments(key); + isGenerator = this.eat(55); + this.parsePropertyName(prop); + } + if (keyName === "get" || keyName === "set") { + isAccessor = true; + this.resetPreviousNodeTrailingComments(key); + prop.kind = keyName; + if (this.match(55)) { + isGenerator = true; + this.raise(Errors.AccessorIsGenerator, { + at: 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, { + at: method + }); + } + if (method.kind === "set" && ((_params = params[params.length - 1]) == null ? void 0 : _params.type) === "RestElement") { + this.raise(Errors.BadSetterRestParameter, { + at: 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.parseMaybeAssignAllowIn(refExpressionErrors); + return this.finishNode(prop, "ObjectProperty"); + } + if (!prop.computed && prop.key.type === "Identifier") { + this.checkReservedWord(prop.key.name, prop.key.loc.start, true, false); + if (isPattern) { + prop.value = this.parseMaybeDefault(startLoc, cloneIdentifier(prop.key)); + } else if (this.match(29)) { + const shorthandAssignLoc = this.state.startLoc; + if (refExpressionErrors != null) { + if (refExpressionErrors.shorthandAssignLoc === null) { + refExpressionErrors.shorthandAssignLoc = shorthandAssignLoc; + } + } else { + this.raise(Errors.InvalidCoverInitializedName, { + at: shorthandAssignLoc + }); + } + prop.value = this.parseMaybeDefault(startLoc, cloneIdentifier(prop.key)); + } else { + prop.value = cloneIdentifier(prop.key); + } + prop.shorthand = true; + return this.finishNode(prop, "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 132: + key = this.parseNumericLiteral(value); + break; + case 131: + key = this.parseStringLiteral(value); + break; + case 133: + key = this.parseBigIntLiteral(value); + break; + case 134: + key = this.parseDecimalLiteral(value); + break; + case 136: + { + const privateKeyLoc = this.state.startLoc; + if (refExpressionErrors != null) { + if (refExpressionErrors.privateKeyLoc === null) { + refExpressionErrors.privateKeyLoc = privateKeyLoc; + } + } else { + this.raise(Errors.UnexpectedPrivateField, { + at: privateKeyLoc + }); + } + key = this.parsePrivateName(); + break; + } + default: + this.unexpected(); + } + } + prop.key = key; + if (type !== 136) { + prop.computed = false; + } + } + return prop.key; + } + initFunction(node, isAsync) { + node.id = null; + node.generator = false; + node.async = isAsync; + } + parseMethod(node, isGenerator, isAsync, isConstructor, allowDirectSuper, type, inClassScope = false) { + this.initFunction(node, isAsync); + node.generator = isGenerator; + this.scope.enter(2 | 16 | (inClassScope ? 64 : 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, canBePattern, isTuple, refExpressionErrors) { + if (isTuple) { + this.expectPlugin("recordAndTuple"); + } + const oldInFSharpPipelineDirectBody = this.state.inFSharpPipelineDirectBody; + this.state.inFSharpPipelineDirectBody = false; + const node = this.startNode(); + this.next(); + node.elements = this.parseExprList(close, !isTuple, refExpressionErrors, node); + this.state.inFSharpPipelineDirectBody = oldInFSharpPipelineDirectBody; + return this.finishNode(node, isTuple ? "TupleExpression" : "ArrayExpression"); + } + parseArrowExpression(node, params, isAsync, trailingCommaLoc) { + this.scope.enter(2 | 4); + let flags = functionFlags(isAsync, false); + if (!this.match(5) && this.prodParam.hasIn) { + flags |= PARAM_IN; + } + this.prodParam.enter(flags); + this.initFunction(node, isAsync); + const oldMaybeInArrowParameters = this.state.maybeInArrowParameters; + if (params) { + this.state.maybeInArrowParameters = true; + this.setArrowFunctionParameters(node, params, trailingCommaLoc); + } + this.state.maybeInArrowParameters = false; + this.parseFunctionBody(node, true); + this.prodParam.exit(); + this.scope.exit(); + this.state.maybeInArrowParameters = oldMaybeInArrowParameters; + return this.finishNode(node, "ArrowFunctionExpression"); + } + setArrowFunctionParameters(node, params, trailingCommaLoc) { + 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() | PARAM_RETURN); + node.body = this.parseBlock(true, false, hasStrictModeDirective => { + const nonSimple = !this.isSimpleParamList(node.params); + if (hasStrictModeDirective && nonSimple) { + this.raise(Errors.IllegalLanguageModeDirective, { + at: (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, { + in: formalParameters, + binding: 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(allowEmpty, refExpressionErrors)); + } + return elts; + } + parseExprListItem(allowEmpty, refExpressionErrors, allowPlaceholder) { + let elt; + if (this.match(12)) { + if (!allowEmpty) { + this.raise(Errors.UnexpectedToken, { + at: 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, { + at: this.state.startLoc + }); + } + const node = this.startNode(); + this.next(); + elt = this.finishNode(node, "ArgumentPlaceholder"); + } else { + elt = this.parseMaybeAssignAllowIn(refExpressionErrors, this.parseParenItem); + } + return elt; + } + parseIdentifier(liberal) { + const node = this.startNode(); + const name = this.parseIdentifierName(liberal); + return this.createIdentifier(node, name); + } + createIdentifier(node, name) { + node.name = name; + node.loc.identifierName = name; + return this.finishNode(node, "Identifier"); + } + 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(130); + } + } 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, { + at: startLoc, + keyword: word + }); + return; + } + const reservedTest = !this.state.strict ? isReservedWord : isBinding ? isStrictBindReservedWord : isStrictReservedWord; + if (reservedTest(word, this.inModule)) { + this.raise(Errors.UnexpectedReservedWord, { + at: startLoc, + reservedWord: word + }); + return; + } else if (word === "yield") { + if (this.prodParam.hasYield) { + this.raise(Errors.YieldBindingIdentifier, { + at: startLoc + }); + return; + } + } else if (word === "await") { + if (this.prodParam.hasAwait) { + this.raise(Errors.AwaitBindingIdentifier, { + at: startLoc + }); + return; + } + if (this.scope.inStaticBlock) { + this.raise(Errors.AwaitBindingIdentifierInStaticBlock, { + at: startLoc + }); + return; + } + this.expressionScope.recordAsyncArrowParametersError({ + at: startLoc + }); + } else if (word === "arguments") { + if (this.scope.inClassAndNotInNonArrowFunction) { + this.raise(Errors.ArgumentsInClass, { + at: startLoc + }); + return; + } + } + } + isAwaitAllowed() { + if (this.prodParam.hasAwait) return true; + if (this.options.allowAwaitOutsideFunction && !this.scope.inFunction) { + return true; + } + return false; + } + parseAwait(startLoc) { + const node = this.startNodeAt(startLoc); + this.expressionScope.recordParameterInitializerError(Errors.AwaitExpressionFormalParameter, { + at: node + }); + if (this.eat(55)) { + this.raise(Errors.ObsoleteAwaitStar, { + at: node + }); + } + if (!this.scope.inFunction && !this.options.allowAwaitOutsideFunction) { + if (this.isAmbiguousAwait()) { + this.ambiguousScriptDifferentAst = true; + } else { + this.sawUnambiguousESM = true; + } + } + if (!this.state.soloAwait) { + node.argument = this.parseMaybeUnary(null, true); + } + return this.finishNode(node, "AwaitExpression"); + } + isAmbiguousAwait() { + if (this.hasPrecedingLineBreak()) return true; + const { + type + } = this.state; + return type === 53 || type === 10 || type === 0 || tokenIsTemplate(type) || type === 101 && !this.state.containsEsc || type === 135 || type === 56 || this.hasPlugin("v8intrinsic") && type === 54; + } + parseYield() { + const node = this.startNode(); + this.expressionScope.recordParameterInitializerError(Errors.YieldInParameter, { + at: node + }); + this.next(); + let delegating = false; + let argument = null; + if (!this.hasPrecedingLineBreak()) { + delegating = this.eat(55); + switch (this.state.type) { + case 13: + case 137: + case 8: + case 11: + case 3: + case 9: + case 14: + case 12: + if (!delegating) break; + default: + argument = this.parseMaybeAssign(); + } + } + node.delegate = delegating; + node.argument = argument; + return this.finishNode(node, "YieldExpression"); + } + checkPipelineAtInfixOperator(left, leftStartLoc) { + if (this.hasPlugin(["pipelineOperator", { + proposal: "smart" + }])) { + if (left.type === "SequenceExpression") { + this.raise(Errors.PipelineHeadSequenceExpression, { + at: 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, { + at: this.state.startLoc + }); + } + if (!this.topicReferenceWasUsedInCurrentContext()) { + this.raise(Errors.PipelineTopicUnused, { + at: startLoc + }); + } + } + withTopicBindingContext(callback) { + const outerContextTopicState = this.state.topicContext; + this.state.topicContext = { + maxNumOfResolvableTopics: 1, + maxTopicIndex: null + }; + try { + return callback(); + } finally { + this.state.topicContext = outerContextTopicState; + } + } + withSmartMixTopicForbiddingContext(callback) { + if (this.hasPlugin(["pipelineOperator", { + proposal: "smart" + }])) { + const outerContextTopicState = this.state.topicContext; + this.state.topicContext = { + maxNumOfResolvableTopics: 0, + maxTopicIndex: null + }; + try { + return callback(); + } finally { + this.state.topicContext = outerContextTopicState; + } + } else { + return callback(); + } + } + withSoloAwaitPermittingContext(callback) { + const outerContextSoloAwaitState = this.state.soloAwait; + this.state.soloAwait = true; + try { + return callback(); + } finally { + this.state.soloAwait = outerContextSoloAwaitState; + } + } + allowInAnd(callback) { + const flags = this.prodParam.currentFlags(); + const prodParamToSet = PARAM_IN & ~flags; + if (prodParamToSet) { + this.prodParam.enter(flags | PARAM_IN); + try { + return callback(); + } finally { + this.prodParam.exit(); + } + } + return callback(); + } + disallowInAnd(callback) { + const flags = this.prodParam.currentFlags(); + const prodParamToClear = PARAM_IN & flags; + if (prodParamToClear) { + this.prodParam.enter(flags & ~PARAM_IN); + try { + return callback(); + } finally { + this.prodParam.exit(); + } + } + return callback(); + } + registerTopicReference() { + this.state.topicContext.maxTopicIndex = 0; + } + topicReferenceIsAllowedInCurrentContext() { + return this.state.topicContext.maxNumOfResolvableTopics >= 1; + } + topicReferenceWasUsedInCurrentContext() { + return this.state.topicContext.maxTopicIndex != null && this.state.topicContext.maxTopicIndex >= 0; + } + parseFSharpPipelineBody(prec) { + const 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"); + } + parsePropertyNamePrefixOperator(prop) {} +} +const loopLabel = { + kind: "loop" + }, + switchLabel = { + kind: "switch" + }; +const loneSurrogate = /[\uD800-\uDFFF]/u; +const keywordRelationalOperator = /in(?:stanceof)?/y; +function babel7CompatTokens(tokens, input) { + for (let i = 0; i < tokens.length; i++) { + const token = tokens[i]; + const { + type + } = token; + if (typeof type === "number") { + { + if (type === 136) { + 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(130), + value: value, + start: hashEndPos, + end: end, + startLoc: hashEndLoc, + endLoc: loc.end + })); + i++; + continue; + } + if (tokenIsTemplate(type)) { + const { + loc, + start, + value, + end + } = token; + const backquoteEnd = start + 1; + const backquoteEndLoc = createPositionWithColumnOffset(loc.start, 1); + let startToken; + if (input.charCodeAt(start) === 96) { + startToken = new Token({ + type: getExportedToken(22), + value: "`", + start: start, + end: backquoteEnd, + startLoc: loc.start, + endLoc: backquoteEndLoc + }); + } else { + startToken = new Token({ + type: getExportedToken(8), + value: "}", + start: start, + end: backquoteEnd, + startLoc: loc.start, + endLoc: backquoteEndLoc + }); + } + let templateValue, templateElementEnd, templateElementEndLoc, endToken; + if (type === 24) { + templateElementEnd = end - 1; + templateElementEndLoc = createPositionWithColumnOffset(loc.end, -1); + templateValue = value === null ? null : value.slice(1, -1); + endToken = new Token({ + type: getExportedToken(22), + value: "`", + start: templateElementEnd, + end: end, + startLoc: templateElementEndLoc, + endLoc: loc.end + }); + } else { + templateElementEnd = end - 2; + templateElementEndLoc = createPositionWithColumnOffset(loc.end, -2); + templateValue = value === null ? null : value.slice(1, -2); + endToken = new Token({ + type: getExportedToken(23), + value: "${", + start: templateElementEnd, + end: end, + startLoc: templateElementEndLoc, + endLoc: loc.end + }); + } + tokens.splice(i, 1, startToken, new Token({ + type: getExportedToken(20), + value: templateValue, + start: backquoteEnd, + end: templateElementEnd, + startLoc: backquoteEndLoc, + endLoc: templateElementEndLoc + }), endToken); + i += 2; + continue; + } + } + token.type = getExportedToken(type); + } + } + return tokens; +} +class StatementParser extends ExpressionParser { + parseTopLevel(file, program) { + file.program = this.parseProgram(program); + file.comments = this.state.comments; + if (this.options.tokens) { + file.tokens = babel7CompatTokens(this.tokens, this.input); + } + return this.finishNode(file, "File"); + } + parseProgram(program, end = 137, sourceType = this.options.sourceType) { + program.sourceType = sourceType; + program.interpreter = this.parseInterpreterDirective(); + this.parseBlockBody(program, true, true, end); + if (this.inModule && !this.options.allowUndeclaredExports && this.scope.undefinedExports.size > 0) { + for (const [localName, at] of Array.from(this.scope.undefinedExports)) { + this.raise(Errors.ModuleExportUndefined, { + at, + localName + }); + } + } + let finishedProgram; + if (end === 137) { + finishedProgram = this.finishNode(program, "Program"); + } else { + finishedProgram = this.finishNodeAt(program, "Program", createPositionWithColumnOffset(this.state.startLoc, -1)); + } + return finishedProgram; + } + stmtToDirective(stmt) { + const directive = stmt; + directive.type = "Directive"; + directive.value = directive.expression; + delete directive.expression; + const directiveLiteral = directive.value; + const expressionValue = directiveLiteral.value; + const raw = this.input.slice(directiveLiteral.start, directiveLiteral.end); + const val = directiveLiteral.value = raw.slice(1, -1); + this.addExtra(directiveLiteral, "raw", raw); + this.addExtra(directiveLiteral, "rawValue", val); + this.addExtra(directiveLiteral, "expressionValue", expressionValue); + directiveLiteral.type = "DirectiveLiteral"; + return directive; + } + parseInterpreterDirective() { + if (!this.match(28)) { + return null; + } + const node = this.startNode(); + node.value = this.state.value; + this.next(); + return this.finishNode(node, "InterpreterDirective"); + } + isLet() { + if (!this.isContextual(99)) { + return false; + } + return this.hasFollowingBindingAtom(); + } + 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); + } + hasInLineFollowingBindingIdentifier() { + const next = this.nextTokenInLineStart(); + const nextCh = this.codePointAtPos(next); + return this.chStartsBindingIdentifier(nextCh, next); + } + startsUsingForOf() { + const { + type, + containsEsc + } = this.lookahead(); + if (type === 101 && !containsEsc) { + return false; + } else if (tokenIsIdentifier(type) && !this.hasFollowingLineBreak()) { + this.expectPlugin("explicitResourceManagement"); + return true; + } + } + startsAwaitUsing() { + let next = this.nextTokenInLineStart(); + if (this.isUnparsedContextual(next, "using")) { + next = this.nextTokenInLineStartSince(next + 5); + const nextCh = this.codePointAtPos(next); + if (this.chStartsBindingIdentifier(nextCh, next)) { + this.expectPlugin("explicitResourceManagement"); + return true; + } + } + return false; + } + 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, { + at: 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.state.containsEsc && this.startsAwaitUsing()) { + if (!this.isAwaitAllowed()) { + this.raise(Errors.AwaitUsingNotInAsyncContext, { + at: node + }); + } else if (!allowDeclaration) { + this.raise(Errors.UnexpectedLexicalDeclaration, { + at: node + }); + } + this.next(); + return this.parseVarStatement(node, "await using"); + } + break; + case 105: + if (this.state.containsEsc || !this.hasInLineFollowingBindingIdentifier()) { + break; + } + this.expectPlugin("explicitResourceManagement"); + if (!this.scope.inModule && this.scope.inTopLevel) { + this.raise(Errors.UnexpectedUsingDeclaration, { + at: this.state.startLoc + }); + } else if (!allowDeclaration) { + this.raise(Errors.UnexpectedLexicalDeclaration, { + at: this.state.startLoc + }); + } + return this.parseVarStatement(node, "using"); + case 99: + { + 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, { + at: 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.options.allowImportExportEverywhere && !topLevel) { + this.raise(Errors.UnexpectedImportExport, { + at: this.state.startLoc + }); + } + this.next(); + let result; + if (starttype === 83) { + result = this.parseImport(node); + if (result.type === "ImportDeclaration" && (!result.importKind || result.importKind === "value")) { + this.sawUnambiguousESM = true; + } + } else { + result = this.parseExport(node, decorators); + if (result.type === "ExportNamedDeclaration" && (!result.exportKind || result.exportKind === "value") || result.type === "ExportAllDeclaration" && (!result.exportKind || result.exportKind === "value") || result.type === "ExportDefaultDeclaration") { + this.sawUnambiguousESM = true; + } + } + this.assertModuleNodeAllowed(result); + return result; + } + default: + { + if (this.isAsyncFunction()) { + if (!allowDeclaration) { + this.raise(Errors.AsyncFunctionInSingleStatementContext, { + at: 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.options.allowImportExportEverywhere && !this.inModule) { + this.raise(Errors.ImportOutsideModule, { + at: node + }); + } + } + decoratorsEnabledBeforeExport() { + if (this.hasPlugin("decorators-legacy")) return true; + return this.hasPlugin("decorators") && this.getPluginOption("decorators", "decoratorsBeforeExport") !== false; + } + maybeTakeDecorators(maybeDecorators, classNode, exportNode) { + if (maybeDecorators) { + if (classNode.decorators && classNode.decorators.length > 0) { + if (typeof this.getPluginOption("decorators", "decoratorsBeforeExport") !== "boolean") { + this.raise(Errors.DecoratorsBeforeAfterExport, { + at: 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, { + at: this.state.startLoc + }); + } + } else if (!this.canHaveLeadingDecorator()) { + throw this.raise(Errors.UnexpectedLeadingDecorator, { + at: 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); + if (this.getPluginOption("decorators", "allowCallParenthesized") === false && node.expression !== expr) { + this.raise(Errors.DecoratorArgumentsOutsideParentheses, { + at: paramsStartLoc + }); + } + } else { + expr = this.parseIdentifier(false); + while (this.eat(16)) { + const node = this.startNodeAt(startLoc); + node.object = expr; + if (this.match(136)) { + 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); + } + } else { + node.expression = this.parseExprSubscripts(); + } + return this.finishNode(node, "Decorator"); + } + parseMaybeDecoratorArguments(expr) { + if (this.eat(10)) { + const node = this.startNodeAtNode(expr); + node.callee = expr; + node.arguments = this.parseCallExpressionArguments(11, false); + this.toReferencedList(node.arguments); + return this.finishNode(node, "CallExpression"); + } + return expr; + } + parseBreakContinueStatement(node, isBreak) { + this.next(); + if (this.isLineTerminator()) { + node.label = null; + } else { + node.label = this.parseIdentifier(); + this.semicolon(); + } + this.verifyBreakContinue(node, isBreak); + return this.finishNode(node, isBreak ? "BreakStatement" : "ContinueStatement"); + } + verifyBreakContinue(node, isBreak) { + let i; + for (i = 0; i < this.state.labels.length; ++i) { + const lab = this.state.labels[i]; + if (node.label == null || lab.name === node.label.name) { + if (lab.kind != null && (isBreak || lab.kind === "loop")) break; + if (node.label && isBreak) break; + } + } + if (i === this.state.labels.length) { + const type = isBreak ? "BreakStatement" : "ContinueStatement"; + this.raise(Errors.IllegalBreakContinue, { + at: 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.isAwaitAllowed() && this.eatContextual(96)) { + awaitAt = this.state.lastTokStartLoc; + } + 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(99); + { + const startsWithAwaitUsing = this.isContextual(96) && this.startsAwaitUsing(); + const starsWithUsingDeclaration = startsWithAwaitUsing || this.isContextual(105) && this.startsUsingForOf(); + 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.isAwaitAllowed()) { + this.raise(Errors.AwaitUsingNotInAsyncContext, { + at: 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, { + at: init + }); + } + if ((isForIn || this.isContextual(101)) && init.declarations.length === 1) { + return this.parseForIn(node, init, awaitAt); + } + if (awaitAt !== null) { + this.unexpected(awaitAt); + } + return this.parseFor(node, init); + } + } + const startsWithAsync = this.isContextual(95); + const refExpressionErrors = new ExpressionErrors(); + const init = this.parseExpression(true, refExpressionErrors); + const isForOf = this.isContextual(101); + if (isForOf) { + if (startsWithLet) { + this.raise(Errors.ForOfLet, { + at: init + }); + } + if (awaitAt === null && startsWithAsync && init.type === "Identifier") { + this.raise(Errors.ForOfAsync, { + at: init + }); + } + } + if (isForOf || this.match(58)) { + this.checkDestructuringPrivate(refExpressionErrors); + this.toAssignable(init, true); + const type = isForOf ? "ForOfStatement" : "ForInStatement"; + this.checkLVal(init, { + in: { + 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.options.allowReturnOutsideFunction) { + this.raise(Errors.IllegalReturn, { + at: this.state.startLoc + }); + } + this.next(); + if (this.isLineTerminator()) { + node.argument = null; + } else { + node.argument = this.parseExpression(); + this.semicolon(); + } + return this.finishNode(node, "ReturnStatement"); + } + parseSwitchStatement(node) { + this.next(); + node.discriminant = this.parseHeaderExpression(); + const cases = node.cases = []; + this.expect(5); + this.state.labels.push(switchLabel); + this.scope.enter(0); + 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, { + at: 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, { + at: 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, { + in: { + type: "CatchClause" + }, + binding: 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, { + at: 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, { + at: 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, { + at: expr, + labelName: maybeName + }); + } + } + const kind = tokenIsLoop(this.state.type) ? "loop" : this.match(71) ? "switch" : null; + for (let i = this.state.labels.length - 1; i >= 0; i--) { + const label = this.state.labels[i]; + if (label.statementStart === node.start) { + label.statementStart = this.state.start; + label.kind = kind; + } else { + break; + } + } + this.state.labels.push({ + name: maybeName, + kind: kind, + statementStart: this.state.start + }); + node.body = 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 ? void 0 : 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, { + at: init, + type: isForIn ? "ForInStatement" : "ForOfStatement" + }); + } + if (init.type === "AssignmentPattern") { + this.raise(Errors.InvalidLhs, { + at: 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(101)))) { + this.raise(Errors.DeclarationMissingInitializer, { + at: this.state.lastTokEndLoc, + kind: "destructuring" + }); + } else if (kind === "const" && !(this.match(58) || this.isContextual(101))) { + this.raise(Errors.DeclarationMissingInitializer, { + at: this.state.lastTokEndLoc, + kind: "const" + }); + } + } + declarations.push(this.finishNode(decl, "VariableDeclarator")); + if (!this.eat(12)) break; + } + return node; + } + parseVarId(decl, kind) { + const id = this.parseBindingAtom(); + this.checkLVal(id, { + in: { + type: "VariableDeclarator" + }, + binding: 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, { + at: 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(2); + 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); + } + isNonstaticConstructor(method) { + return !method.computed && !method.static && (method.key.name === "constructor" || method.key.value === "constructor"); + } + parseClassBody(hadSuperClass, oldStrict) { + this.classScope.enter(); + const state = { + hadConstructor: false, + hadSuperClass + }; + let decorators = []; + const classBody = this.startNode(); + classBody.body = []; + this.expect(5); + this.withSmartMixTopicForbiddingContext(() => { + while (!this.match(8)) { + if (this.eat(13)) { + if (decorators.length > 0) { + throw this.raise(Errors.DecoratorSemicolon, { + at: this.state.lastTokEndLoc + }); + } + continue; + } + if (this.match(26)) { + decorators.push(this.parseDecorator()); + continue; + } + const member = this.startNode(); + if (decorators.length) { + member.decorators = decorators; + this.resetStartLocationFromNode(member, decorators[0]); + decorators = []; + } + this.parseClassMember(classBody, member, state); + if (member.kind === "constructor" && member.decorators && member.decorators.length > 0) { + this.raise(Errors.DecoratorConstructor, { + at: member + }); + } + } + }); + this.state.strict = oldStrict; + this.next(); + if (decorators.length) { + throw this.raise(Errors.TrailingDecorator, { + at: this.state.startLoc + }); + } + this.classScope.exit(); + return this.finishNode(classBody, "ClassBody"); + } + parseClassMemberFromModifier(classBody, member) { + const key = this.parseIdentifier(true); + if (this.isClassMethod()) { + const method = member; + method.kind = "method"; + method.computed = false; + method.key = key; + method.static = false; + this.pushClassMethod(classBody, method, false, false, false, false); + return true; + } else if (this.isClassProperty()) { + const prop = member; + prop.computed = false; + prop.key = key; + prop.static = false; + classBody.body.push(this.parseClassProperty(prop)); + return true; + } + this.resetPreviousNodeTrailingComments(key); + return false; + } + parseClassMember(classBody, member, state) { + const isStatic = this.isContextual(104); + if (isStatic) { + if (this.parseClassMemberFromModifier(classBody, member)) { + return; + } + if (this.eat(5)) { + this.parseClassStaticBlock(classBody, member); + return; + } + } + this.parseClassMemberWithIsStatic(classBody, member, state, isStatic); + } + parseClassMemberWithIsStatic(classBody, member, state, isStatic) { + const publicMethod = member; + const privateMethod = member; + const publicProp = member; + const privateProp = member; + const accessorProp = member; + const method = publicMethod; + const publicMember = publicMethod; + member.static = isStatic; + this.parsePropertyNamePrefixOperator(member); + if (this.eat(55)) { + method.kind = "method"; + const isPrivateName = this.match(136); + this.parseClassElementName(method); + if (isPrivateName) { + this.pushClassPrivateMethod(classBody, privateMethod, true, false); + return; + } + if (this.isNonstaticConstructor(publicMethod)) { + this.raise(Errors.ConstructorIsGenerator, { + at: publicMethod.key + }); + } + this.pushClassMethod(classBody, publicMethod, true, false, false, false); + return; + } + const isContextual = tokenIsIdentifier(this.state.type) && !this.state.containsEsc; + const isPrivate = this.match(136); + const key = this.parseClassElementName(member); + const maybeQuestionTokenStartLoc = this.state.startLoc; + this.parsePostMemberNameModifiers(publicMember); + if (this.isClassMethod()) { + method.kind = "method"; + if (isPrivate) { + this.pushClassPrivateMethod(classBody, privateMethod, false, false); + return; + } + const isConstructor = this.isNonstaticConstructor(publicMethod); + let allowsDirectSuper = false; + if (isConstructor) { + publicMethod.kind = "constructor"; + if (state.hadConstructor && !this.hasPlugin("typescript")) { + this.raise(Errors.DuplicateConstructor, { + at: key + }); + } + if (isConstructor && this.hasPlugin("typescript") && member.override) { + this.raise(Errors.OverrideOnConstructor, { + at: key + }); + } + state.hadConstructor = true; + allowsDirectSuper = state.hadSuperClass; + } + this.pushClassMethod(classBody, publicMethod, false, false, isConstructor, allowsDirectSuper); + } else if (this.isClassProperty()) { + if (isPrivate) { + this.pushClassPrivateProperty(classBody, privateProp); + } else { + this.pushClassProperty(classBody, publicProp); + } + } else if (isContextual && key.name === "async" && !this.isLineTerminator()) { + this.resetPreviousNodeTrailingComments(key); + const isGenerator = this.eat(55); + if (publicMember.optional) { + this.unexpected(maybeQuestionTokenStartLoc); + } + method.kind = "method"; + const isPrivate = this.match(136); + this.parseClassElementName(method); + this.parsePostMemberNameModifiers(publicMember); + if (isPrivate) { + this.pushClassPrivateMethod(classBody, privateMethod, isGenerator, true); + } else { + if (this.isNonstaticConstructor(publicMethod)) { + this.raise(Errors.ConstructorIsAsync, { + at: publicMethod.key + }); + } + this.pushClassMethod(classBody, publicMethod, isGenerator, true, false, false); + } + } else if (isContextual && (key.name === "get" || key.name === "set") && !(this.match(55) && this.isLineTerminator())) { + this.resetPreviousNodeTrailingComments(key); + method.kind = key.name; + const isPrivate = this.match(136); + this.parseClassElementName(publicMethod); + if (isPrivate) { + this.pushClassPrivateMethod(classBody, privateMethod, false, false); + } else { + if (this.isNonstaticConstructor(publicMethod)) { + this.raise(Errors.ConstructorIsAccessor, { + at: publicMethod.key + }); + } + this.pushClassMethod(classBody, publicMethod, false, false, false, false); + } + this.checkGetterSetterParams(publicMethod); + } else if (isContextual && key.name === "accessor" && !this.isLineTerminator()) { + this.expectPlugin("decoratorAutoAccessors"); + this.resetPreviousNodeTrailingComments(key); + const isPrivate = this.match(136); + 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 === 130 || type === 131) && member.static && value === "prototype") { + this.raise(Errors.StaticPrototype, { + at: this.state.startLoc + }); + } + if (type === 136) { + if (value === "constructor") { + this.raise(Errors.ConstructorClassPrivateField, { + at: this.state.startLoc + }); + } + const key = this.parsePrivateName(); + member.key = key; + return key; + } + return this.parsePropertyName(member); + } + parseClassStaticBlock(classBody, member) { + var _member$decorators; + this.scope.enter(64 | 128 | 16); + const oldLabels = this.state.labels; + this.state.labels = []; + this.prodParam.enter(PARAM); + const body = member.body = []; + this.parseBlockOrModuleBlockBody(body, undefined, false, 8); + this.prodParam.exit(); + this.scope.exit(); + this.state.labels = oldLabels; + classBody.body.push(this.finishNode(member, "StaticBlock")); + if ((_member$decorators = member.decorators) != null && _member$decorators.length) { + this.raise(Errors.DecoratorStaticBlock, { + at: member + }); + } + } + pushClassProperty(classBody, prop) { + if (!prop.computed && (prop.key.name === "constructor" || prop.key.value === "constructor")) { + this.raise(Errors.ConstructorClassField, { + at: 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) { + const key = prop.key; + if (key.name === "constructor" || key.value === "constructor") { + this.raise(Errors.ConstructorClassField, { + at: 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(64 | 16); + this.expressionScope.enter(newExpressionScope()); + this.prodParam.enter(PARAM); + node.value = this.eat(29) ? this.parseMaybeAssignAllowIn() : null; + this.expressionScope.exit(); + this.prodParam.exit(); + this.scope.exit(); + } + parseClassId(node, isStatement, optionalId, bindingType = 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, { + at: 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, { + at: node + }); + } + this.parseExportFrom(node, 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, 97); + } + let hasDeclaration; + if (isFromRequired || hasSpecifiers) { + hasDeclaration = false; + if (decorators) { + throw this.raise(Errors.UnsupportedDecoratorExport, { + at: 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, { + at: node + }); + } + 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, { + at: node + }); + } + this.checkExport(node2, true, true); + return this.finishNode(node2, "ExportDefaultDeclaration"); + } + 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)) { + if (!node.specifiers) node.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)) { + if (!node.specifiers) node.specifiers = []; + const isTypeExport = node.exportKind === "type"; + node.specifiers.push(...this.parseExportSpecifiers(isTypeExport)); + node.source = null; + node.declaration = null; + if (this.hasPlugin("importAssertions")) { + node.assertions = []; + } + return true; + } + return false; + } + maybeParseExportDeclaration(node) { + if (this.shouldParseExportDeclaration()) { + node.specifiers = []; + node.source = null; + if (this.hasPlugin("importAssertions")) { + node.assertions = []; + } + node.declaration = this.parseExportDeclaration(node); + return true; + } + return false; + } + isAsyncFunction() { + if (!this.isContextual(95)) return false; + const next = this.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, { + at: this.state.startLoc + }); + } + return this.parseClass(this.maybeTakeDecorators(this.parseDecorators(false), this.startNode()), true, true); + } + if (this.match(75) || this.match(74) || this.isLet()) { + throw this.raise(Errors.UnsupportedDefaultExport, { + at: 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 === 99) { + return false; + } + if ((type === 128 || type === 127) && !this.state.containsEsc) { + const { + type: nextType + } = this.lookahead(); + if (tokenIsIdentifier(nextType) && nextType !== 97 || nextType === 5) { + this.expectOnePlugin(["flow", "typescript"]); + return false; + } + } + } else if (!this.match(65)) { + return false; + } + const next = this.nextTokenStart(); + const hasFrom = this.isUnparsedContextual(next, "from"); + if (this.input.charCodeAt(next) === 44 || tokenIsIdentifier(this.state.type) && hasFrom) { + return true; + } + if (this.match(65) && hasFrom) { + const nextAfterFrom = this.input.charCodeAt(this.nextTokenStartSince(next + 4)); + return nextAfterFrom === 34 || nextAfterFrom === 39; + } + return false; + } + parseExportFrom(node, expect) { + if (this.eatContextual(97)) { + node.source = this.parseImportSource(); + this.checkExport(node); + 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, { + at: this.state.startLoc + }); + } + return true; + } + } + return type === 74 || type === 75 || type === 68 || type === 80 || this.isLet() || this.isAsyncFunction(); + } + checkExport(node, checkNames, isDefault, isFrom) { + if (checkNames) { + 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$extra.parenthesized)) { + this.raise(Errors.ExportDefaultFromAsIdentifier, { + at: declaration + }); + } + } + } else if ((_node$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, { + at: specifier, + localName: local.value, + exportName + }); + } else { + this.checkReservedWord(local.name, local.loc.start, true, false); + this.scope.checkLocalExport(local); + } + } + } + } else if (node.declaration) { + if (node.declaration.type === "FunctionDeclaration" || node.declaration.type === "ClassDeclaration") { + const id = node.declaration.id; + if (!id) throw new Error("Assertion failure"); + this.checkDuplicateExports(node, id.name); + } else if (node.declaration.type === "VariableDeclaration") { + for (const declaration of node.declaration.declarations) { + this.checkDeclaration(declaration.id); + } + } + } + } + } + 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, { + at: node + }); + } else { + this.raise(Errors.DuplicateExport, { + at: 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(128); + const isString = this.match(131); + const node = this.startNode(); + node.local = this.parseModuleExportName(); + nodes.push(this.parseExportSpecifier(node, isString, isInTypeExport, isMaybeTypeOnly)); + } + return nodes; + } + parseExportSpecifier(node, isString, isInTypeExport, isMaybeTypeOnly) { + if (this.eatContextual(93)) { + node.exported = this.parseModuleExportName(); + } else if (isString) { + node.exported = cloneStringLiteral(node.local); + } else if (!node.exported) { + node.exported = cloneIdentifier(node.local); + } + return this.finishNode(node, "ExportSpecifier"); + } + parseModuleExportName() { + if (this.match(131)) { + const result = this.parseStringLiteral(this.state.value); + const surrogate = result.value.match(loneSurrogate); + if (surrogate) { + this.raise(Errors.ModuleExportNameHasLoneSurrogate, { + at: 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) { + if (node.module) { + var _node$assertions; + if (node.specifiers.length !== 1 || node.specifiers[0].type !== "ImportDefaultSpecifier") { + this.raise(Errors.ImportReflectionNotBinding, { + at: node.specifiers[0].loc.start + }); + } + if (((_node$assertions = node.assertions) == null ? void 0 : _node$assertions.length) > 0) { + this.raise(Errors.ImportReflectionHasAssertion, { + at: node.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, { + at: nonDefaultNamedSpecifier.loc.start + }); + } + } + } + } + isPotentialImportPhase(isExport) { + return !isExport && this.isContextual(125); + } + 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; + } + } + parseMaybeImportPhase(node, isExport) { + if (!this.isPotentialImportPhase(isExport)) { + this.applyImportPhase(node, isExport, null); + return null; + } + const phaseIdentifier = this.parseIdentifier(true); + const { + type + } = this.state; + const isImportPhase = tokenIsKeywordOrIdentifier(type) ? type !== 97 || this.lookaheadCharCode() === 102 : type !== 12; + if (isImportPhase) { + this.resetPreviousIdentifierLeadingComments(phaseIdentifier); + this.applyImportPhase(node, isExport, phaseIdentifier.name, phaseIdentifier.loc.start); + return null; + } else { + this.applyImportPhase(node, isExport, null); + return phaseIdentifier; + } + } + isPrecedingIdImportPhase(phase) { + const { + type + } = this.state; + return tokenIsIdentifier(type) ? type !== 97 || this.lookaheadCharCode() === 102 : type !== 12; + } + parseImport(node) { + if (this.match(131)) { + 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(97); + 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(); + return this.finishNode(node, "ImportDeclaration"); + } + parseImportSource() { + if (!this.match(131)) 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, { + in: { + type + }, + binding: 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, { + at: this.state.startLoc, + key: keyName + }); + } + attrNames.add(keyName); + if (this.match(131)) { + node.key = this.parseStringLiteral(keyName); + } else { + node.key = this.parseIdentifier(true); + } + this.expect(14); + if (!this.match(131)) { + throw this.raise(Errors.ModuleAttributeInvalidValue, { + at: 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, { + at: node.key + }); + } + if (attributes.has(node.key.name)) { + this.raise(Errors.ModuleAttributesWithDuplicateKeys, { + at: node.key, + key: node.key.name + }); + } + attributes.add(node.key.name); + this.expect(14); + if (!this.match(131)) { + throw this.raise(Errors.ModuleAttributeInvalidValue, { + at: 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; + let useWith = false; + if (this.match(76)) { + if (this.hasPrecedingLineBreak() && this.lookaheadCharCode() === 40) { + return; + } + this.next(); + { + if (this.hasPlugin("moduleAttributes")) { + attributes = this.parseModuleAttributes(); + } else { + this.expectImportAttributesPlugin(); + attributes = this.parseImportAttributes(); + } + } + useWith = true; + } else if (this.isContextual(94) && !this.hasPrecedingLineBreak()) { + if (this.hasPlugin("importAttributes")) { + if (this.getPluginOption("importAttributes", "deprecatedAssertSyntax") !== true) { + this.raise(Errors.ImportAttributesUseAssert, { + at: this.state.startLoc + }); + } + this.addExtra(node, "deprecatedAssertSyntax", true); + } else { + this.expectOnePlugin(["importAttributes", "importAssertions"]); + } + this.next(); + attributes = this.parseImportAttributes(); + } else if (this.hasPlugin("importAttributes") || this.hasPlugin("importAssertions")) { + attributes = []; + } else { + if (this.hasPlugin("moduleAttributes")) { + attributes = []; + } else return; + } + 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, { + at: this.state.startLoc + }); + } + this.expect(12); + if (this.eat(8)) break; + } + const specifier = this.startNode(); + const importedIsString = this.match(131); + const isMaybeTypeOnly = this.isContextual(128); + 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, { + at: specifier, + importName: imported.value + }); + } + this.checkReservedWord(imported.name, specifier.loc.start, true, true); + if (!specifier.local) { + specifier.local = cloneIdentifier(imported); + } + } + return this.finishImportSpecifier(specifier, "ImportSpecifier", bindingType); + } + isThisParam(param) { + return param.type === "Identifier" && param.name === "this"; + } +} +class Parser extends StatementParser { + constructor(options, input) { + options = getOptions(options); + super(options, input); + this.options = options; + this.initializeScopes(); + this.plugins = pluginsMap(this.options.plugins); + this.filename = options.sourceFilename; + } + getScopeHandler() { + return ScopeHandler; + } + parse() { + this.enterInitialScopes(); + const file = this.startNode(); + const program = this.startNode(); + this.nextToken(); + file.errors = null; + this.parseTopLevel(file, program); + file.errors = this.state.errors; + return file; + } +} +function pluginsMap(plugins) { + const pluginMap = new Map(); + for (const plugin of plugins) { + const [name, options] = Array.isArray(plugin) ? plugin : [plugin, {}]; + if (!pluginMap.has(name)) pluginMap.set(name, options || {}); + } + return pluginMap; +} +function parse(input, options) { + var _options; + if (((_options = options) == null ? void 0 : _options.sourceType) === "unambiguous") { + options = Object.assign({}, options); + try { + options.sourceType = "module"; + const parser = getParser(options, input); + const ast = parser.parse(); + if (parser.sawUnambiguousESM) { + return ast; + } + if (parser.ambiguousScriptDifferentAst) { + try { + options.sourceType = "script"; + return getParser(options, input).parse(); + } catch (_unused) {} + } else { + ast.program.sourceType = "script"; + } + return ast; + } catch (moduleError) { + try { + options.sourceType = "script"; + return getParser(options, input).parse(); + } catch (_unused2) {} + throw moduleError; + } + } else { + return getParser(options, input).parse(); + } +} +function parseExpression(input, options) { + const parser = getParser(options, input); + if (parser.options.strictMode) { + parser.state.strict = true; + } + return parser.getExpression(); +} +function generateExportedTokenTypes(internalTokenTypes) { + const tokenTypes = {}; + for (const typeName of Object.keys(internalTokenTypes)) { + tokenTypes[typeName] = getExportedToken(internalTokenTypes[typeName]); + } + return tokenTypes; +} +const tokTypes = generateExportedTokenTypes(tt); +function getParser(options, input) { + let cls = Parser; + if (options != null && options.plugins) { + validatePlugins(options.plugins); + cls = getParserClass(options.plugins); + } + return new cls(options, input); +} +const parserClassCache = {}; +function getParserClass(pluginsFromOptions) { + const pluginList = mixinPluginNames.filter(name => hasPlugin(pluginsFromOptions, name)); + const key = pluginList.join("/"); + let cls = parserClassCache[key]; + if (!cls) { + cls = Parser; + for (const plugin of pluginList) { + cls = mixinPlugins[plugin](cls); + } + parserClassCache[key] = cls; + } + return cls; +} +exports.parse = parse; +exports.parseExpression = parseExpression; +exports.tokTypes = tokTypes; +//# sourceMappingURL=index.js.map