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rOACCT/node_modules/@babel/parser/lib/index.js
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index.js
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			'use strict';

			Object.defineProperty(exports, '__esModule', { value: true });

			const beforeExpr = true;
			const startsExpr = true;
			const isLoop = true;
			const isAssign = true;
			const prefix = true;
			const postfix = true;
			class TokenType {
			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.updateContext = 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 = new Map();

			function createKeyword(name, options = {}) {
			options.keyword = name;
			const token = new TokenType(name, options);
			keywords.set(name, token);
			return token;
			}

			function createBinop(name, binop) {
			return new TokenType(name, {
			beforeExpr,
			binop
			});
			}

			const types = {
			num: new TokenType("num", {
			startsExpr
			}),
			bigint: new TokenType("bigint", {
			startsExpr
			}),
			decimal: new TokenType("decimal", {
			startsExpr
			}),
			regexp: new TokenType("regexp", {
			startsExpr
			}),
			string: new TokenType("string", {
			startsExpr
			}),
			name: new TokenType("name", {
			startsExpr
			}),
			eof: new TokenType("eof"),
			bracketL: new TokenType("[", {
			beforeExpr,
			startsExpr
			}),
			bracketHashL: new TokenType("#[", {
			beforeExpr,
			startsExpr
			}),
			bracketBarL: new TokenType("[\|", {
			beforeExpr,
			startsExpr
			}),
			bracketR: new TokenType("]"),
			bracketBarR: new TokenType("\|]"),
			braceL: new TokenType("{", {
			beforeExpr,
			startsExpr
			}),
			braceBarL: new TokenType("{\|", {
			beforeExpr,
			startsExpr
			}),
			braceHashL: new TokenType("#{", {
			beforeExpr,
			startsExpr
			}),
			braceR: new TokenType("}"),
			braceBarR: new TokenType("\|}"),
			parenL: new TokenType("(", {
			beforeExpr,
			startsExpr
			}),
			parenR: new TokenType(")"),
			comma: new TokenType(",", {
			beforeExpr
			}),
			semi: new TokenType(";", {
			beforeExpr
			}),
			colon: new TokenType(":", {
			beforeExpr
			}),
			doubleColon: new TokenType("::", {
			beforeExpr
			}),
			dot: new TokenType("."),
			question: new TokenType("?", {
			beforeExpr
			}),
			questionDot: new TokenType("?."),
			arrow: new TokenType("=>", {
			beforeExpr
			}),
			template: new TokenType("template"),
			ellipsis: new TokenType("...", {
			beforeExpr
			}),
			backQuote: new TokenType("`", {
			startsExpr
			}),
			dollarBraceL: new TokenType("${", {
			beforeExpr,
			startsExpr
			}),
			at: new TokenType("@"),
			hash: new TokenType("#", {
			startsExpr
			}),
			interpreterDirective: new TokenType("#!..."),
			eq: new TokenType("=", {
			beforeExpr,
			isAssign
			}),
			assign: new TokenType("_=", {
			beforeExpr,
			isAssign
			}),
			incDec: new TokenType("++/--", {
			prefix,
			postfix,
			startsExpr
			}),
			bang: new TokenType("!", {
			beforeExpr,
			prefix,
			startsExpr
			}),
			tilde: new TokenType("~", {
			beforeExpr,
			prefix,
			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),
			relational: createBinop("</>/<=/>=", 7),
			bitShift: createBinop("<</>>/>>>", 8),
			plusMin: new TokenType("+/-", {
			beforeExpr,
			binop: 9,
			prefix,
			startsExpr
			}),
			modulo: new TokenType("%", {
			beforeExpr,
			binop: 10,
			startsExpr
			}),
			star: new TokenType("*", {
			binop: 10
			}),
			slash: createBinop("/", 10),
			exponent: new TokenType("**", {
			beforeExpr,
			binop: 11,
			rightAssociative: true
			}),
			_break: createKeyword("break"),
			_case: createKeyword("case", {
			beforeExpr
			}),
			_catch: createKeyword("catch"),
			_continue: createKeyword("continue"),
			_debugger: createKeyword("debugger"),
			_default: createKeyword("default", {
			beforeExpr
			}),
			_do: createKeyword("do", {
			isLoop,
			beforeExpr
			}),
			_else: createKeyword("else", {
			beforeExpr
			}),
			_finally: createKeyword("finally"),
			_for: createKeyword("for", {
			isLoop
			}),
			_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"),
			_while: createKeyword("while", {
			isLoop
			}),
			_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
			}),
			_in: createKeyword("in", {
			beforeExpr,
			binop: 7
			}),
			_instanceof: createKeyword("instanceof", {
			beforeExpr,
			binop: 7
			}),
			_typeof: createKeyword("typeof", {
			beforeExpr,
			prefix,
			startsExpr
			}),
			_void: createKeyword("void", {
			beforeExpr,
			prefix,
			startsExpr
			}),
			_delete: createKeyword("delete", {
			beforeExpr,
			prefix,
			startsExpr
			})
			};

			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;
			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 Position {
			constructor(line, col) {
			this.line = void 0;
			this.column = void 0;
			this.line = line;
			this.column = col;
			}

			}
			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 getLineInfo(input, offset) {
			let line = 1;
			let lineStart = 0;
			let match;
			lineBreakG.lastIndex = 0;

			while ((match = lineBreakG.exec(input)) && match.index < offset) {
			line++;
			lineStart = lineBreakG.lastIndex;
			}

			return new Position(line, offset - lineStart);
			}

			class BaseParser {
			constructor() {
			this.sawUnambiguousESM = false;
			this.ambiguousScriptDifferentAst = false;
			}

			hasPlugin(name) {
			return this.plugins.has(name);
			}

			getPluginOption(plugin, name) {
			if (this.hasPlugin(plugin)) return this.plugins.get(plugin)[name];
			}

			}

			function last(stack) {
			return stack[stack.length - 1];
			}

			class CommentsParser extends BaseParser {
			addComment(comment) {
			if (this.filename) comment.loc.filename = this.filename;
			this.state.trailingComments.push(comment);
			this.state.leadingComments.push(comment);
			}

			adjustCommentsAfterTrailingComma(node, elements, takeAllComments) {
			if (this.state.leadingComments.length === 0) {
			return;
			}

			let lastElement = null;
			let i = elements.length;

			while (lastElement === null && i > 0) {
			lastElement = elements[--i];
			}

			if (lastElement === null) {
			return;
			}

			for (let j = 0; j < this.state.leadingComments.length; j++) {
			if (this.state.leadingComments[j].end < this.state.commentPreviousNode.end) {
			this.state.leadingComments.splice(j, 1);
			j--;
			}
			}

			const newTrailingComments = [];

			for (let i = 0; i < this.state.leadingComments.length; i++) {
			const leadingComment = this.state.leadingComments[i];

			if (leadingComment.end < node.end) {
			newTrailingComments.push(leadingComment);

			if (!takeAllComments) {
			this.state.leadingComments.splice(i, 1);
			i--;
			}
			} else {
			if (node.trailingComments === undefined) {
			node.trailingComments = [];
			}

			node.trailingComments.push(leadingComment);
			}
			}

			if (takeAllComments) this.state.leadingComments = [];

			if (newTrailingComments.length > 0) {
			lastElement.trailingComments = newTrailingComments;
			} else if (lastElement.trailingComments !== undefined) {
			lastElement.trailingComments = [];
			}
			}

			processComment(node) {
			if (node.type === "Program" && node.body.length > 0) return;
			const stack = this.state.commentStack;
			let firstChild, lastChild, trailingComments, i, j;

			if (this.state.trailingComments.length > 0) {
			if (this.state.trailingComments[0].start >= node.end) {
			trailingComments = this.state.trailingComments;
			this.state.trailingComments = [];
			} else {
			this.state.trailingComments.length = 0;
			}
			} else if (stack.length > 0) {
			const lastInStack = last(stack);

			if (lastInStack.trailingComments && lastInStack.trailingComments[0].start >= node.end) {
			trailingComments = lastInStack.trailingComments;
			delete lastInStack.trailingComments;
			}
			}

			if (stack.length > 0 && last(stack).start >= node.start) {
			firstChild = stack.pop();
			}

			while (stack.length > 0 && last(stack).start >= node.start) {
			lastChild = stack.pop();
			}

			if (!lastChild && firstChild) lastChild = firstChild;

			if (firstChild) {
			switch (node.type) {
			case "ObjectExpression":
			this.adjustCommentsAfterTrailingComma(node, node.properties);
			break;

			case "ObjectPattern":
			this.adjustCommentsAfterTrailingComma(node, node.properties, true);
			break;

			case "CallExpression":
			this.adjustCommentsAfterTrailingComma(node, node.arguments);
			break;

			case "ArrayExpression":
			this.adjustCommentsAfterTrailingComma(node, node.elements);
			break;

			case "ArrayPattern":
			this.adjustCommentsAfterTrailingComma(node, node.elements, true);
			break;
			}
			} else if (this.state.commentPreviousNode && (this.state.commentPreviousNode.type === "ImportSpecifier" && node.type !== "ImportSpecifier" \|\| this.state.commentPreviousNode.type === "ExportSpecifier" && node.type !== "ExportSpecifier")) {
			this.adjustCommentsAfterTrailingComma(node, [this.state.commentPreviousNode]);
			}

			if (lastChild) {
			if (lastChild.leadingComments) {
			if (lastChild !== node && lastChild.leadingComments.length > 0 && last(lastChild.leadingComments).end <= node.start) {
			node.leadingComments = lastChild.leadingComments;
			delete lastChild.leadingComments;
			} else {
			for (i = lastChild.leadingComments.length - 2; i >= 0; --i) {
			if (lastChild.leadingComments[i].end <= node.start) {
			node.leadingComments = lastChild.leadingComments.splice(0, i + 1);
			break;
			}
			}
			}
			}
			} else if (this.state.leadingComments.length > 0) {
			if (last(this.state.leadingComments).end <= node.start) {
			if (this.state.commentPreviousNode) {
			for (j = 0; j < this.state.leadingComments.length; j++) {
			if (this.state.leadingComments[j].end < this.state.commentPreviousNode.end) {
			this.state.leadingComments.splice(j, 1);
			j--;
			}
			}
			}

			if (this.state.leadingComments.length > 0) {
			node.leadingComments = this.state.leadingComments;
			this.state.leadingComments = [];
			}
			} else {
			for (i = 0; i < this.state.leadingComments.length; i++) {
			if (this.state.leadingComments[i].end > node.start) {
			break;
			}
			}

			const leadingComments = this.state.leadingComments.slice(0, i);

			if (leadingComments.length) {
			node.leadingComments = leadingComments;
			}

			trailingComments = this.state.leadingComments.slice(i);

			if (trailingComments.length === 0) {
			trailingComments = null;
			}
			}
			}

			this.state.commentPreviousNode = node;

			if (trailingComments) {
			if (trailingComments.length && trailingComments[0].start >= node.start && last(trailingComments).end <= node.end) {
			node.innerComments = trailingComments;
			} else {
			const firstTrailingCommentIndex = trailingComments.findIndex(comment => comment.end >= node.end);

			if (firstTrailingCommentIndex > 0) {
			node.innerComments = trailingComments.slice(0, firstTrailingCommentIndex);
			node.trailingComments = trailingComments.slice(firstTrailingCommentIndex);
			} else {
			node.trailingComments = trailingComments;
			}
			}
			}

			stack.push(node);
			}

			}

			const ErrorMessages = Object.freeze({
			AccessorIsGenerator: "A %0ter cannot be a generator",
			ArgumentsInClass: "'arguments' is only allowed in functions and class methods",
			AsyncFunctionInSingleStatementContext: "Async functions can only be declared at the top level or inside a block",
			AwaitBindingIdentifier: "Can not use 'await' as identifier inside an async function",
			AwaitExpressionFormalParameter: "await is not allowed in async function parameters",
			AwaitNotInAsyncContext: "'await' is only allowed within async functions and at the top levels of modules",
			AwaitNotInAsyncFunction: "'await' is only allowed within async functions",
			BadGetterArity: "getter must not have any formal parameters",
			BadSetterArity: "setter must have exactly one formal parameter",
			BadSetterRestParameter: "setter function argument must not be a rest parameter",
			ConstructorClassField: "Classes may not have a field named 'constructor'",
			ConstructorClassPrivateField: "Classes may not have a private field named '#constructor'",
			ConstructorIsAccessor: "Class constructor may not be an accessor",
			ConstructorIsAsync: "Constructor can't be an async function",
			ConstructorIsGenerator: "Constructor can't be a generator",
			DeclarationMissingInitializer: "%0 require an initialization value",
			DecoratorBeforeExport: "Decorators must be placed before the 'export' keyword. You can set the 'decoratorsBeforeExport' option to false to use the 'export @decorator class {}' syntax",
			DecoratorConstructor: "Decorators can't be used with a constructor. Did you mean '@dec class { ... }'?",
			DecoratorExportClass: "Using the export keyword between a decorator and a class is not allowed. Please use `export @dec class` instead.",
			DecoratorSemicolon: "Decorators must not be followed by a semicolon",
			DecoratorStaticBlock: "Decorators can't be used with a static block",
			DeletePrivateField: "Deleting a private field is not allowed",
			DestructureNamedImport: "ES2015 named imports do not destructure. Use another statement for destructuring after the import.",
			DuplicateConstructor: "Duplicate constructor in the same class",
			DuplicateDefaultExport: "Only one default export allowed per module.",
			DuplicateExport: "`%0` has already been exported. Exported identifiers must be unique.",
			DuplicateProto: "Redefinition of __proto__ property",
			DuplicateRegExpFlags: "Duplicate regular expression flag",
			DuplicateStaticBlock: "Duplicate static block in the same class",
			ElementAfterRest: "Rest element must be last element",
			EscapedCharNotAnIdentifier: "Invalid Unicode escape",
			ExportBindingIsString: "A string literal cannot be used as an exported binding without `from`.\n- Did you mean `export { '%0' as '%1' } from 'some-module'`?",
			ExportDefaultFromAsIdentifier: "'from' is not allowed as an identifier after 'export default'",
			ForInOfLoopInitializer: "%0 loop variable declaration may not have an initializer",
			GeneratorInSingleStatementContext: "Generators can only be declared at the top level or inside a block",
			IllegalBreakContinue: "Unsyntactic %0",
			IllegalLanguageModeDirective: "Illegal 'use strict' directive in function with non-simple parameter list",
			IllegalReturn: "'return' outside of function",
			ImportBindingIsString: 'A string literal cannot be used as an imported binding.\n- Did you mean `import { "%0" as foo }`?',
			ImportCallArgumentTrailingComma: "Trailing comma is disallowed inside import(...) arguments",
			ImportCallArity: "import() requires exactly %0",
			ImportCallNotNewExpression: "Cannot use new with import(...)",
			ImportCallSpreadArgument: "... is not allowed in import()",
			ImportMetaOutsideModule: `import.meta may appear only with 'sourceType: "module"'`,
			ImportOutsideModule: `'import' and 'export' may appear only with 'sourceType: "module"'`,
			InvalidBigIntLiteral: "Invalid BigIntLiteral",
			InvalidCodePoint: "Code point out of bounds",
			InvalidDecimal: "Invalid decimal",
			InvalidDigit: "Expected number in radix %0",
			InvalidEscapeSequence: "Bad character escape sequence",
			InvalidEscapeSequenceTemplate: "Invalid escape sequence in template",
			InvalidEscapedReservedWord: "Escape sequence in keyword %0",
			InvalidIdentifier: "Invalid identifier %0",
			InvalidLhs: "Invalid left-hand side in %0",
			InvalidLhsBinding: "Binding invalid left-hand side in %0",
			InvalidNumber: "Invalid number",
			InvalidOrMissingExponent: "Floating-point numbers require a valid exponent after the 'e'",
			InvalidOrUnexpectedToken: "Unexpected character '%0'",
			InvalidParenthesizedAssignment: "Invalid parenthesized assignment pattern",
			InvalidPrivateFieldResolution: "Private name #%0 is not defined",
			InvalidPropertyBindingPattern: "Binding member expression",
			InvalidRecordProperty: "Only properties and spread elements are allowed in record definitions",
			InvalidRestAssignmentPattern: "Invalid rest operator's argument",
			LabelRedeclaration: "Label '%0' is already declared",
			LetInLexicalBinding: "'let' is not allowed to be used as a name in 'let' or 'const' declarations.",
			LineTerminatorBeforeArrow: "No line break is allowed before '=>'",
			MalformedRegExpFlags: "Invalid regular expression flag",
			MissingClassName: "A class name is required",
			MissingEqInAssignment: "Only '=' operator can be used for specifying default value.",
			MissingUnicodeEscape: "Expecting Unicode escape sequence \\uXXXX",
			MixingCoalesceWithLogical: "Nullish coalescing operator(??) requires parens when mixing with logical operators",
			ModuleAttributeDifferentFromType: "The only accepted module attribute is `type`",
			ModuleAttributeInvalidValue: "Only string literals are allowed as module attribute values",
			ModuleAttributesWithDuplicateKeys: 'Duplicate key "%0" is not allowed in module attributes',
			ModuleExportNameHasLoneSurrogate: "An export name cannot include a lone surrogate, found '\\u%0'",
			ModuleExportUndefined: "Export '%0' is not defined",
			MultipleDefaultsInSwitch: "Multiple default clauses",
			NewlineAfterThrow: "Illegal newline after throw",
			NoCatchOrFinally: "Missing catch or finally clause",
			NumberIdentifier: "Identifier directly after number",
			NumericSeparatorInEscapeSequence: "Numeric separators are not allowed inside unicode escape sequences or hex escape sequences",
			ObsoleteAwaitStar: "await* has been removed from the async functions proposal. Use Promise.all() instead.",
			OptionalChainingNoNew: "constructors in/after an Optional Chain are not allowed",
			OptionalChainingNoTemplate: "Tagged Template Literals are not allowed in optionalChain",
			ParamDupe: "Argument name clash",
			PatternHasAccessor: "Object pattern can't contain getter or setter",
			PatternHasMethod: "Object pattern can't contain methods",
			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: "Primary Topic Reference found but pipelineOperator not passed 'smart' for 'proposal' option.",
			PrivateInExpectedIn: "Private names are only allowed in property accesses (`obj.#%0`) or in `in` expressions (`#%0 in obj`)",
			PrivateNameRedeclaration: "Duplicate private name #%0",
			RecordExpressionBarIncorrectEndSyntaxType: "Record expressions ending with '\|}' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'bar'",
			RecordExpressionBarIncorrectStartSyntaxType: "Record expressions starting with '{\|' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'bar'",
			RecordExpressionHashIncorrectStartSyntaxType: "Record expressions starting with '#{' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'hash'",
			RecordNoProto: "'__proto__' is not allowed in Record expressions",
			RestTrailingComma: "Unexpected trailing comma after rest element",
			SloppyFunction: "In non-strict mode code, functions can only be declared at top level, inside a block, or as the body of an if statement",
			StaticPrototype: "Classes may not have static property named prototype",
			StrictDelete: "Deleting local variable in strict mode",
			StrictEvalArguments: "Assigning to '%0' in strict mode",
			StrictEvalArgumentsBinding: "Binding '%0' in strict mode",
			StrictFunction: "In strict mode code, functions can only be declared at top level or inside a block",
			StrictNumericEscape: "The only valid numeric escape in strict mode is '\\0'",
			StrictOctalLiteral: "Legacy octal literals are not allowed in strict mode",
			StrictWith: "'with' in strict mode",
			SuperNotAllowed: "super() is only valid inside a class constructor of a subclass. Maybe a typo in the method name ('constructor') or not extending another class?",
			SuperPrivateField: "Private fields can't be accessed on super",
			TrailingDecorator: "Decorators must be attached to a class element",
			TupleExpressionBarIncorrectEndSyntaxType: "Tuple expressions ending with '\|]' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'bar'",
			TupleExpressionBarIncorrectStartSyntaxType: "Tuple expressions starting with '[\|' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'bar'",
			TupleExpressionHashIncorrectStartSyntaxType: "Tuple expressions starting with '#[' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'hash'",
			UnexpectedArgumentPlaceholder: "Unexpected argument placeholder",
			UnexpectedAwaitAfterPipelineBody: 'Unexpected "await" after pipeline body; await must have parentheses in minimal proposal',
			UnexpectedDigitAfterHash: "Unexpected digit after hash token",
			UnexpectedImportExport: "'import' and 'export' may only appear at the top level",
			UnexpectedKeyword: "Unexpected keyword '%0'",
			UnexpectedLeadingDecorator: "Leading decorators must be attached to a class declaration",
			UnexpectedLexicalDeclaration: "Lexical declaration cannot appear in a single-statement context",
			UnexpectedNewTarget: "new.target can only be used in functions",
			UnexpectedNumericSeparator: "A numeric separator is only allowed between two digits",
			UnexpectedPrivateField: "Private names can only be used as the name of a class element (i.e. class C { #p = 42; #m() {} } )\n or a property of member expression (i.e. this.#p).",
			UnexpectedReservedWord: "Unexpected reserved word '%0'",
			UnexpectedSuper: "super is only allowed in object methods and classes",
			UnexpectedToken: "Unexpected token '%0'",
			UnexpectedTokenUnaryExponentiation: "Illegal expression. Wrap left hand side or entire exponentiation in parentheses.",
			UnsupportedBind: "Binding should be performed on object property.",
			UnsupportedDecoratorExport: "A decorated export must export a class declaration",
			UnsupportedDefaultExport: "Only expressions, functions or classes are allowed as the `default` export.",
			UnsupportedImport: "import can only be used in import() or import.meta",
			UnsupportedMetaProperty: "The only valid meta property for %0 is %0.%1",
			UnsupportedParameterDecorator: "Decorators cannot be used to decorate parameters",
			UnsupportedPropertyDecorator: "Decorators cannot be used to decorate object literal properties",
			UnsupportedSuper: "super can only be used with function calls (i.e. super()) or in property accesses (i.e. super.prop or super[prop])",
			UnterminatedComment: "Unterminated comment",
			UnterminatedRegExp: "Unterminated regular expression",
			UnterminatedString: "Unterminated string constant",
			UnterminatedTemplate: "Unterminated template",
			VarRedeclaration: "Identifier '%0' has already been declared",
			YieldBindingIdentifier: "Can not use 'yield' as identifier inside a generator",
			YieldInParameter: "Yield expression is not allowed in formal parameters",
			ZeroDigitNumericSeparator: "Numeric separator can not be used after leading 0"
			});

			class ParserError extends CommentsParser {
			getLocationForPosition(pos) {
			let loc;
			if (pos === this.state.start) loc = this.state.startLoc;else if (pos === this.state.lastTokStart) loc = this.state.lastTokStartLoc;else if (pos === this.state.end) loc = this.state.endLoc;else if (pos === this.state.lastTokEnd) loc = this.state.lastTokEndLoc;else loc = getLineInfo(this.input, pos);
			return loc;
			}

			raise(pos, errorTemplate, ...params) {
			return this.raiseWithData(pos, undefined, errorTemplate, ...params);
			}

			raiseWithData(pos, data, errorTemplate, ...params) {
			const loc = this.getLocationForPosition(pos);
			const message = errorTemplate.replace(/%(\d+)/g, (_, i) => params[i]) + ` (${loc.line}:${loc.column})`;
			return this._raise(Object.assign({
			loc,
			pos
			}, data), message);
			}

			_raise(errorContext, message) {
			const err = new SyntaxError(message);
			Object.assign(err, errorContext);

			if (this.options.errorRecovery) {
			if (!this.isLookahead) this.state.errors.push(err);
			return err;
			} else {
			throw err;
			}
			}

			}

			var estree = (superClass => class extends superClass {
			estreeParseRegExpLiteral({
			pattern,
			flags
			}) {
			let regex = null;

			try {
			regex = new RegExp(pattern, flags);
			} catch (e) {}

			const node = this.estreeParseLiteral(regex);
			node.regex = {
			pattern,
			flags
			};
			return node;
			}

			estreeParseBigIntLiteral(value) {
			let bigInt;

			try {
			bigInt = BigInt(value);
			} catch (_unused) {
			bigInt = null;
			}

			const node = this.estreeParseLiteral(bigInt);
			node.bigint = String(node.value \|\| value);
			return node;
			}

			estreeParseDecimalLiteral(value) {
			const decimal = null;
			const node = this.estreeParseLiteral(decimal);
			node.decimal = String(node.value \|\| value);
			return node;
			}

			estreeParseLiteral(value) {
			return this.parseLiteral(value, "Literal");
			}

			directiveToStmt(directive) {
			const directiveLiteral = directive.value;
			const stmt = this.startNodeAt(directive.start, directive.loc.start);
			const expression = this.startNodeAt(directiveLiteral.start, directiveLiteral.loc.start);
			expression.value = directiveLiteral.extra.expressionValue;
			expression.raw = directiveLiteral.extra.raw;
			stmt.expression = this.finishNodeAt(expression, "Literal", directiveLiteral.end, directiveLiteral.loc.end);
			stmt.directive = directiveLiteral.extra.raw.slice(1, -1);
			return this.finishNodeAt(stmt, "ExpressionStatement", directive.end, directive.loc.end);
			}

			initFunction(node, isAsync) {
			super.initFunction(node, isAsync);
			node.expression = false;
			}

			checkDeclaration(node) {
			if (node != null && this.isObjectProperty(node)) {
			this.checkDeclaration(node.value);
			} else {
			super.checkDeclaration(node);
			}
			}

			getObjectOrClassMethodParams(method) {
			return method.value.params;
			}

			isValidDirective(stmt) {
			var _stmt$expression$extr;

			return stmt.type === "ExpressionStatement" && stmt.expression.type === "Literal" && typeof stmt.expression.value === "string" && !((_stmt$expression$extr = stmt.expression.extra) == null ? void 0 : _stmt$expression$extr.parenthesized);
			}

			stmtToDirective(stmt) {
			const directive = super.stmtToDirective(stmt);
			const value = stmt.expression.value;
			this.addExtra(directive.value, "expressionValue", value);
			return directive;
			}

			parseBlockBody(node, ...args) {
			super.parseBlockBody(node, ...args);
			const directiveStatements = node.directives.map(d => this.directiveToStmt(d));
			node.body = directiveStatements.concat(node.body);
			delete node.directives;
			}

			pushClassMethod(classBody, method, isGenerator, isAsync, isConstructor, allowsDirectSuper) {
			this.parseMethod(method, isGenerator, isAsync, isConstructor, allowsDirectSuper, "ClassMethod", true);

			if (method.typeParameters) {
			method.value.typeParameters = method.typeParameters;
			delete method.typeParameters;
			}

			classBody.body.push(method);
			}

			parseExprAtom(refExpressionErrors) {
			switch (this.state.type) {
			case types.num:
			case types.string:
			return this.estreeParseLiteral(this.state.value);

			case types.regexp:
			return this.estreeParseRegExpLiteral(this.state.value);

			case types.bigint:
			return this.estreeParseBigIntLiteral(this.state.value);

			case types.decimal:
			return this.estreeParseDecimalLiteral(this.state.value);

			case types._null:
			return this.estreeParseLiteral(null);

			case types._true:
			return this.estreeParseLiteral(true);

			case types._false:
			return this.estreeParseLiteral(false);

			default:
			return super.parseExprAtom(refExpressionErrors);
			}
			}

			parseLiteral(value, type, startPos, startLoc) {
			const node = super.parseLiteral(value, type, startPos, startLoc);
			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;
			type = type === "ClassMethod" ? "MethodDefinition" : type;
			return this.finishNode(node, type);
			}

			parseObjectMethod(prop, isGenerator, isAsync, isPattern, isAccessor) {
			const node = super.parseObjectMethod(prop, isGenerator, isAsync, isPattern, isAccessor);

			if (node) {
			node.type = "Property";
			if (node.kind === "method") node.kind = "init";
			node.shorthand = false;
			}

			return node;
			}

			parseObjectProperty(prop, startPos, startLoc, isPattern, refExpressionErrors) {
			const node = super.parseObjectProperty(prop, startPos, startLoc, isPattern, refExpressionErrors);

			if (node) {
			node.kind = "init";
			node.type = "Property";
			}

			return node;
			}

			toAssignable(node, isLHS = false) {
			if (node != null && this.isObjectProperty(node)) {
			this.toAssignable(node.value, isLHS);
			return node;
			}

			return super.toAssignable(node, isLHS);
			}

			toAssignableObjectExpressionProp(prop, ...args) {
			if (prop.kind === "get" \|\| prop.kind === "set") {
			this.raise(prop.key.start, ErrorMessages.PatternHasAccessor);
			} else if (prop.method) {
			this.raise(prop.key.start, ErrorMessages.PatternHasMethod);
			} else {
			super.toAssignableObjectExpressionProp(prop, ...args);
			}
			}

			finishCallExpression(node, optional) {
			super.finishCallExpression(node, optional);

			if (node.callee.type === "Import") {
			node.type = "ImportExpression";
			node.source = node.arguments[0];
			delete node.arguments;
			delete node.callee;
			}

			return node;
			}

			toReferencedArguments(node) {
			if (node.type === "ImportExpression") {
			return;
			}

			super.toReferencedArguments(node);
			}

			parseExport(node) {
			super.parseExport(node);

			switch (node.type) {
			case "ExportAllDeclaration":
			node.exported = null;
			break;

			case "ExportNamedDeclaration":
			if (node.specifiers.length === 1 && node.specifiers[0].type === "ExportNamespaceSpecifier") {
			node.type = "ExportAllDeclaration";
			node.exported = node.specifiers[0].exported;
			delete node.specifiers;
			}

			break;
			}

			return node;
			}

			parseSubscript(base, startPos, startLoc, noCalls, state) {
			const node = super.parseSubscript(base, startPos, startLoc, noCalls, state);

			if (state.optionalChainMember) {
			if (node.type === "OptionalMemberExpression" \|\| node.type === "OptionalCallExpression") {
			node.type = node.type.substring(8);
			}

			if (state.stop) {
			const chain = this.startNodeAtNode(node);
			chain.expression = node;
			return this.finishNode(chain, "ChainExpression");
			}
			} else if (node.type === "MemberExpression" \|\| node.type === "CallExpression") {
			node.optional = false;
			}

			return node;
			}

			hasPropertyAsPrivateName(node) {
			if (node.type === "ChainExpression") {
			node = node.expression;
			}

			return super.hasPropertyAsPrivateName(node);
			}

			isOptionalChain(node) {
			return node.type === "ChainExpression";
			}

			isObjectProperty(node) {
			return node.type === "Property" && node.kind === "init" && !node.method;
			}

			isObjectMethod(node) {
			return node.method \|\| node.kind === "get" \|\| node.kind === "set";
			}

			});

			class TokContext {
			constructor(token, isExpr, preserveSpace, override) {
			this.token = void 0;
			this.isExpr = void 0;
			this.preserveSpace = void 0;
			this.override = void 0;
			this.token = token;
			this.isExpr = !!isExpr;
			this.preserveSpace = !!preserveSpace;
			this.override = override;
			}

			}
			const types$1 = {
			braceStatement: new TokContext("{", false),
			braceExpression: new TokContext("{", true),
			recordExpression: new TokContext("#{", true),
			templateQuasi: new TokContext("${", false),
			parenStatement: new TokContext("(", false),
			parenExpression: new TokContext("(", true),
			template: new TokContext("`", true, true, p => p.readTmplToken()),
			functionExpression: new TokContext("function", true),
			functionStatement: new TokContext("function", false)
			};

			types.parenR.updateContext = types.braceR.updateContext = function () {
			if (this.state.context.length === 1) {
			this.state.exprAllowed = true;
			return;
			}

			let out = this.state.context.pop();

			if (out === types$1.braceStatement && this.curContext().token === "function") {
			out = this.state.context.pop();
			}

			this.state.exprAllowed = !out.isExpr;
			};

			types.name.updateContext = function (prevType) {
			let allowed = false;

			if (prevType !== types.dot) {
			if (this.state.value === "of" && !this.state.exprAllowed && prevType !== types._function && prevType !== types._class) {
			allowed = true;
			}
			}

			this.state.exprAllowed = allowed;

			if (this.state.isIterator) {
			this.state.isIterator = false;
			}
			};

			types.braceL.updateContext = function (prevType) {
			this.state.context.push(this.braceIsBlock(prevType) ? types$1.braceStatement : types$1.braceExpression);
			this.state.exprAllowed = true;
			};

			types.dollarBraceL.updateContext = function () {
			this.state.context.push(types$1.templateQuasi);
			this.state.exprAllowed = true;
			};

			types.parenL.updateContext = function (prevType) {
			const statementParens = prevType === types._if \|\| prevType === types._for \|\| prevType === types._with \|\| prevType === types._while;
			this.state.context.push(statementParens ? types$1.parenStatement : types$1.parenExpression);
			this.state.exprAllowed = true;
			};

			types.incDec.updateContext = function () {};

			types._function.updateContext = types._class.updateContext = function (prevType) {
			if (prevType.beforeExpr && prevType !== types.semi && prevType !== types._else && !(prevType === types._return && this.hasPrecedingLineBreak()) && !((prevType === types.colon \|\| prevType === types.braceL) && this.curContext() === types$1.b_stat)) {
			this.state.context.push(types$1.functionExpression);
			} else {
			this.state.context.push(types$1.functionStatement);
			}

			this.state.exprAllowed = false;
			};

			types.backQuote.updateContext = function () {
			if (this.curContext() === types$1.template) {
			this.state.context.pop();
			} else {
			this.state.context.push(types$1.template);
			}

			this.state.exprAllowed = false;
			};

			types.braceHashL.updateContext = function () {
			this.state.context.push(types$1.recordExpression);
			this.state.exprAllowed = true;
			};

			let nonASCIIidentifierStartChars = "\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u037f\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u052f\u0531-\u0556\u0559\u0560-\u0588\u05d0-\u05ea\u05ef-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u0860-\u086a\u08a0-\u08b4\u08b6-\u08c7\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0980\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u09fc\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0af9\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c39\u0c3d\u0c58-\u0c5a\u0c60\u0c61\u0c80\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d04-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d54-\u0d56\u0d5f-\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e86-\u0e8a\u0e8c-\u0ea3\u0ea5\u0ea7-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f5\u13f8-\u13fd\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f8\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1878\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191e\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19b0-\u19c9\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1c80-\u1c88\u1c90-\u1cba\u1cbd-\u1cbf\u1ce9-\u1cec\u1cee-\u1cf3\u1cf5\u1cf6\u1cfa\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2118-\u211d\u2124\u2126\u2128\u212a-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309b-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312f\u3131-\u318e\u31a0-\u31bf\u31f0-\u31ff\u3400-\u4dbf\u4e00-\u9ffc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua69d\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua7bf\ua7c2-\ua7ca\ua7f5-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua8fd\ua8fe\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\ua9e0-\ua9e4\ua9e6-\ua9ef\ua9fa-\ua9fe\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa7e-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uab30-\uab5a\uab5c-\uab69\uab70-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc";
			let nonASCIIidentifierChars = "\u200c\u200d\xb7\u0300-\u036f\u0387\u0483-\u0487\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u0669\u0670\u06d6-\u06dc\u06df-\u06e4\u06e7\u06e8\u06ea-\u06ed\u06f0-\u06f9\u0711\u0730-\u074a\u07a6-\u07b0\u07c0-\u07c9\u07eb-\u07f3\u07fd\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0859-\u085b\u08d3-\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\u0c3e-\u0c44\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0c66-\u0c6f\u0c81-\u0c83\u0cbc\u0cbe-\u0cc4\u0cc6-\u0cc8\u0cca-\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0ce6-\u0cef\u0d00-\u0d03\u0d3b\u0d3c\u0d3e-\u0d44\u0d46-\u0d48\u0d4a-\u0d4d\u0d57\u0d62\u0d63\u0d66-\u0d6f\u0d81-\u0d83\u0dca\u0dcf-\u0dd4\u0dd6\u0dd8-\u0ddf\u0de6-\u0def\u0df2\u0df3\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0e50-\u0e59\u0eb1\u0eb4-\u0ebc\u0ec8-\u0ecd\u0ed0-\u0ed9\u0f18\u0f19\u0f20-\u0f29\u0f35\u0f37\u0f39\u0f3e\u0f3f\u0f71-\u0f84\u0f86\u0f87\u0f8d-\u0f97\u0f99-\u0fbc\u0fc6\u102b-\u103e\u1040-\u1049\u1056-\u1059\u105e-\u1060\u1062-\u1064\u1067-\u106d\u1071-\u1074\u1082-\u108d\u108f-\u109d\u135d-\u135f\u1369-\u1371\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b4-\u17d3\u17dd\u17e0-\u17e9\u180b-\u180d\u1810-\u1819\u18a9\u1920-\u192b\u1930-\u193b\u1946-\u194f\u19d0-\u19da\u1a17-\u1a1b\u1a55-\u1a5e\u1a60-\u1a7c\u1a7f-\u1a89\u1a90-\u1a99\u1ab0-\u1abd\u1abf\u1ac0\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-\u1df9\u1dfb-\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, 157, 310, 10, 21, 11, 7, 153, 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, 107, 20, 28, 22, 13, 52, 76, 44, 33, 24, 27, 35, 30, 0, 3, 0, 9, 34, 4, 0, 13, 47, 15, 3, 22, 0, 2, 0, 36, 17, 2, 24, 85, 6, 2, 0, 2, 3, 2, 14, 2, 9, 8, 46, 39, 7, 3, 1, 3, 21, 2, 6, 2, 1, 2, 4, 4, 0, 19, 0, 13, 4, 159, 52, 19, 3, 21, 2, 31, 47, 21, 1, 2, 0, 185, 46, 42, 3, 37, 47, 21, 0, 60, 42, 14, 0, 72, 26, 230, 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, 35, 56, 264, 8, 2, 36, 18, 0, 50, 29, 113, 6, 2, 1, 2, 37, 22, 0, 26, 5, 2, 1, 2, 31, 15, 0, 328, 18, 190, 0, 80, 921, 103, 110, 18, 195, 2749, 1070, 4050, 582, 8634, 568, 8, 30, 114, 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, 8952, 286, 50, 2, 18, 3, 9, 395, 2309, 106, 6, 12, 4, 8, 8, 9, 5991, 84, 2, 70, 2, 1, 3, 0, 3, 1, 3, 3, 2, 11, 2, 0, 2, 6, 2, 64, 2, 3, 3, 7, 2, 6, 2, 27, 2, 3, 2, 4, 2, 0, 4, 6, 2, 339, 3, 24, 2, 24, 2, 30, 2, 24, 2, 30, 2, 24, 2, 30, 2, 24, 2, 30, 2, 24, 2, 7, 2357, 44, 11, 6, 17, 0, 370, 43, 1301, 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, 42717, 35, 4148, 12, 221, 3, 5761, 15, 7472, 3104, 541, 1507, 4938];
			const astralIdentifierCodes = [509, 0, 227, 0, 150, 4, 294, 9, 1368, 2, 2, 1, 6, 3, 41, 2, 5, 0, 166, 1, 574, 3, 9, 9, 370, 1, 154, 10, 176, 2, 54, 14, 32, 9, 16, 3, 46, 10, 54, 9, 7, 2, 37, 13, 2, 9, 6, 1, 45, 0, 13, 2, 49, 13, 9, 3, 2, 11, 83, 11, 7, 0, 161, 11, 6, 9, 7, 3, 56, 1, 2, 6, 3, 1, 3, 2, 10, 0, 11, 1, 3, 6, 4, 4, 193, 17, 10, 9, 5, 0, 82, 19, 13, 9, 214, 6, 3, 8, 28, 1, 83, 16, 16, 9, 82, 12, 9, 9, 84, 14, 5, 9, 243, 14, 166, 9, 71, 5, 2, 1, 3, 3, 2, 0, 2, 1, 13, 9, 120, 6, 3, 6, 4, 0, 29, 9, 41, 6, 2, 3, 9, 0, 10, 10, 47, 15, 406, 7, 2, 7, 17, 9, 57, 21, 2, 13, 123, 5, 4, 0, 2, 1, 2, 6, 2, 0, 9, 9, 49, 4, 2, 1, 2, 4, 9, 9, 330, 3, 19306, 9, 135, 4, 60, 6, 26, 9, 1014, 0, 2, 54, 8, 3, 82, 0, 12, 1, 19628, 1, 5319, 4, 4, 5, 9, 7, 3, 6, 31, 3, 149, 2, 1418, 49, 513, 54, 5, 49, 9, 0, 15, 0, 23, 4, 2, 14, 1361, 6, 2, 16, 3, 6, 2, 1, 2, 4, 262, 6, 10, 9, 419, 13, 1495, 6, 110, 6, 6, 9, 4759, 9, 787719, 239];

			function isInAstralSet(code, set) {
			let pos = 0x10000;

			for (let i = 0, length = set.length; i < length; i += 2) {
			pos += set[i];
			if (pos > code) return false;
			pos += set[i + 1];
			if (pos >= code) return true;
			}

			return false;
			}

			function isIdentifierStart(code) {
			if (code < 65) return code === 36;
			if (code <= 90) return true;
			if (code < 97) return code === 95;
			if (code <= 122) return true;

			if (code <= 0xffff) {
			return code >= 0xaa && nonASCIIidentifierStart.test(String.fromCharCode(code));
			}

			return isInAstralSet(code, astralIdentifierStartCodes);
			}
			function isIdentifierChar(code) {
			if (code < 48) return code === 36;
			if (code < 58) return true;
			if (code < 65) return false;
			if (code <= 90) return true;
			if (code < 97) return code === 95;
			if (code <= 122) return true;

			if (code <= 0xffff) {
			return code >= 0xaa && nonASCIIidentifier.test(String.fromCharCode(code));
			}

			return isInAstralSet(code, astralIdentifierStartCodes) \|\| isInAstralSet(code, astralIdentifierCodes);
			}

			const reservedWords = {
			keyword: ["break", "case", "catch", "continue", "debugger", "default", "do", "else", "finally", "for", "function", "if", "return", "switch", "throw", "try", "var", "const", "while", "with", "new", "this", "super", "class", "extends", "export", "import", "null", "true", "false", "in", "instanceof", "typeof", "void", "delete"],
			strict: ["implements", "interface", "let", "package", "private", "protected", "public", "static", "yield"],
			strictBind: ["eval", "arguments"]
			};
			const keywords$1 = 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$1.has(word);
			}

			const keywordRelationalOperator = /^in(stanceof)?$/;
			function isIteratorStart(current, next) {
			return current === 64 && next === 64;
			}

			const SCOPE_OTHER = 0b00000000,
			SCOPE_PROGRAM = 0b00000001,
			SCOPE_FUNCTION = 0b00000010,
			SCOPE_ARROW = 0b00000100,
			SCOPE_SIMPLE_CATCH = 0b00001000,
			SCOPE_SUPER = 0b00010000,
			SCOPE_DIRECT_SUPER = 0b00100000,
			SCOPE_CLASS = 0b01000000,
			SCOPE_TS_MODULE = 0b10000000,
			SCOPE_VAR = SCOPE_PROGRAM \| SCOPE_FUNCTION \| SCOPE_TS_MODULE;
			const BIND_KIND_VALUE = 0b00000000001,
			BIND_KIND_TYPE = 0b00000000010,
			BIND_SCOPE_VAR = 0b00000000100,
			BIND_SCOPE_LEXICAL = 0b00000001000,
			BIND_SCOPE_FUNCTION = 0b00000010000,
			BIND_FLAGS_NONE = 0b00001000000,
			BIND_FLAGS_CLASS = 0b00010000000,
			BIND_FLAGS_TS_ENUM = 0b00100000000,
			BIND_FLAGS_TS_CONST_ENUM = 0b01000000000,
			BIND_FLAGS_TS_EXPORT_ONLY = 0b10000000000;
			const BIND_CLASS = BIND_KIND_VALUE \| BIND_KIND_TYPE \| BIND_SCOPE_LEXICAL \| BIND_FLAGS_CLASS,
			BIND_LEXICAL = BIND_KIND_VALUE \| 0 \| BIND_SCOPE_LEXICAL \| 0,
			BIND_VAR = BIND_KIND_VALUE \| 0 \| BIND_SCOPE_VAR \| 0,
			BIND_FUNCTION = BIND_KIND_VALUE \| 0 \| BIND_SCOPE_FUNCTION \| 0,
			BIND_TS_INTERFACE = 0 \| BIND_KIND_TYPE \| 0 \| BIND_FLAGS_CLASS,
			BIND_TS_TYPE = 0 \| BIND_KIND_TYPE \| 0 \| 0,
			BIND_TS_ENUM = BIND_KIND_VALUE \| BIND_KIND_TYPE \| BIND_SCOPE_LEXICAL \| BIND_FLAGS_TS_ENUM,
			BIND_TS_AMBIENT = 0 \| 0 \| 0 \| BIND_FLAGS_TS_EXPORT_ONLY,
			BIND_NONE = 0 \| 0 \| 0 \| BIND_FLAGS_NONE,
			BIND_OUTSIDE = BIND_KIND_VALUE \| 0 \| 0 \| BIND_FLAGS_NONE,
			BIND_TS_CONST_ENUM = BIND_TS_ENUM \| BIND_FLAGS_TS_CONST_ENUM,
			BIND_TS_NAMESPACE = 0 \| 0 \| 0 \| BIND_FLAGS_TS_EXPORT_ONLY;
			const CLASS_ELEMENT_FLAG_STATIC = 0b100,
			CLASS_ELEMENT_KIND_GETTER = 0b010,
			CLASS_ELEMENT_KIND_SETTER = 0b001,
			CLASS_ELEMENT_KIND_ACCESSOR = CLASS_ELEMENT_KIND_GETTER \| CLASS_ELEMENT_KIND_SETTER;
			const CLASS_ELEMENT_STATIC_GETTER = CLASS_ELEMENT_KIND_GETTER \| CLASS_ELEMENT_FLAG_STATIC,
			CLASS_ELEMENT_STATIC_SETTER = CLASS_ELEMENT_KIND_SETTER \| CLASS_ELEMENT_FLAG_STATIC,
			CLASS_ELEMENT_INSTANCE_GETTER = CLASS_ELEMENT_KIND_GETTER,
			CLASS_ELEMENT_INSTANCE_SETTER = CLASS_ELEMENT_KIND_SETTER,
			CLASS_ELEMENT_OTHER = 0;

			const reservedTypes = new Set(["_", "any", "bool", "boolean", "empty", "extends", "false", "interface", "mixed", "null", "number", "static", "string", "true", "typeof", "void"]);
			const FlowErrors = Object.freeze({
			AmbiguousConditionalArrow: "Ambiguous expression: wrap the arrow functions in parentheses to disambiguate.",
			AmbiguousDeclareModuleKind: "Found both `declare module.exports` and `declare export` in the same module. Modules can only have 1 since they are either an ES module or they are a CommonJS module",
			AssignReservedType: "Cannot overwrite reserved type %0",
			DeclareClassElement: "The `declare` modifier can only appear on class fields.",
			DeclareClassFieldInitializer: "Initializers are not allowed in fields with the `declare` modifier.",
			DuplicateDeclareModuleExports: "Duplicate `declare module.exports` statement",
			EnumBooleanMemberNotInitialized: "Boolean enum members need to be initialized. Use either `%0 = true,` or `%0 = false,` in enum `%1`.",
			EnumDuplicateMemberName: "Enum member names need to be unique, but the name `%0` has already been used before in enum `%1`.",
			EnumInconsistentMemberValues: "Enum `%0` has inconsistent member initializers. Either use no initializers, or consistently use literals (either booleans, numbers, or strings) for all member initializers.",
			EnumInvalidExplicitType: "Enum type `%1` is not valid. Use one of `boolean`, `number`, `string`, or `symbol` in enum `%0`.",
			EnumInvalidExplicitTypeUnknownSupplied: "Supplied enum type is not valid. Use one of `boolean`, `number`, `string`, or `symbol` in enum `%0`.",
			EnumInvalidMemberInitializerPrimaryType: "Enum `%0` has type `%2`, so the initializer of `%1` needs to be a %2 literal.",
			EnumInvalidMemberInitializerSymbolType: "Symbol enum members cannot be initialized. Use `%1,` in enum `%0`.",
			EnumInvalidMemberInitializerUnknownType: "The enum member initializer for `%1` needs to be a literal (either a boolean, number, or string) in enum `%0`.",
			EnumInvalidMemberName: "Enum member names cannot start with lowercase 'a' through 'z'. Instead of using `%0`, consider using `%1`, in enum `%2`.",
			EnumNumberMemberNotInitialized: "Number enum members need to be initialized, e.g. `%1 = 1` in enum `%0`.",
			EnumStringMemberInconsistentlyInitailized: "String enum members need to consistently either all use initializers, or use no initializers, in enum `%0`.",
			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",
			OptionalBindingPattern: "A binding pattern parameter cannot be optional in an implementation signature.",
			SpreadVariance: "Spread properties cannot have variance",
			TypeBeforeInitializer: "Type annotations must come before default assignments, e.g. instead of `age = 25: number` use `age: number = 25`",
			TypeCastInPattern: "The type cast expression is expected to be wrapped with parenthesis",
			UnexpectedExplicitInexactInObject: "Explicit inexact syntax must appear at the end of an inexact object",
			UnexpectedReservedType: "Unexpected reserved type %0",
			UnexpectedReservedUnderscore: "`_` is only allowed as a type argument to call or new",
			UnexpectedSpaceBetweenModuloChecks: "Spaces between `%` and `checks` are not allowed here.",
			UnexpectedSpreadType: "Spread operator cannot appear in class or interface definitions",
			UnexpectedSubtractionOperand: 'Unexpected token, expected "number" or "bigint"',
			UnexpectedTokenAfterTypeParameter: "Expected an arrow function after this type parameter declaration",
			UnexpectedTypeParameterBeforeAsyncArrowFunction: "Type parameters must come after the async keyword, e.g. instead of `<T> async () => {}`, use `async <T>() => {}`",
			UnsupportedDeclareExportKind: "`declare export %0` is not supported. Use `%1` instead",
			UnsupportedStatementInDeclareModule: "Only declares and type imports are allowed inside declare module",
			UnterminatedFlowComment: "Unterminated flow-comment"
			});

			function isEsModuleType(bodyElement) {
			return bodyElement.type === "DeclareExportAllDeclaration" \|\| bodyElement.type === "DeclareExportDeclaration" && (!bodyElement.declaration \|\| bodyElement.declaration.type !== "TypeAlias" && bodyElement.declaration.type !== "InterfaceDeclaration");
			}

			function hasTypeImportKind(node) {
			return node.importKind === "type" \|\| node.importKind === "typeof";
			}

			function isMaybeDefaultImport(state) {
			return (state.type === types.name \|\| !!state.type.keyword) && state.value !== "from";
			}

			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 => {
			var _temp;

			return _temp = class extends superClass {
			constructor(options, input) {
			super(options, input);
			this.flowPragma = void 0;
			this.flowPragma = undefined;
			}

			shouldParseTypes() {
			return this.getPluginOption("flow", "all") \|\| this.flowPragma === "flow";
			}

			shouldParseEnums() {
			return !!this.getPluginOption("flow", "enums");
			}

			finishToken(type, val) {
			if (type !== types.string && type !== types.semi && type !== types.interpreterDirective) {
			if (this.flowPragma === undefined) {
			this.flowPragma = null;
			}
			}

			return super.finishToken(type, val);
			}

			addComment(comment) {
			if (this.flowPragma === undefined) {
			const matches = FLOW_PRAGMA_REGEX.exec(comment.value);

			if (!matches) ; else if (matches[1] === "flow") {
			this.flowPragma = "flow";
			} else if (matches[1] === "noflow") {
			this.flowPragma = "noflow";
			} else {
			throw new Error("Unexpected flow pragma");
			}
			}

			return super.addComment(comment);
			}

			flowParseTypeInitialiser(tok) {
			const oldInType = this.state.inType;
			this.state.inType = true;
			this.expect(tok \|\| types.colon);
			const type = this.flowParseType();
			this.state.inType = oldInType;
			return type;
			}

			flowParsePredicate() {
			const node = this.startNode();
			const moduloLoc = this.state.startLoc;
			const moduloPos = this.state.start;
			this.expect(types.modulo);
			const checksLoc = this.state.startLoc;
			this.expectContextual("checks");

			if (moduloLoc.line !== checksLoc.line \|\| moduloLoc.column !== checksLoc.column - 1) {
			this.raise(moduloPos, FlowErrors.UnexpectedSpaceBetweenModuloChecks);
			}

			if (this.eat(types.parenL)) {
			node.value = this.parseExpression();
			this.expect(types.parenR);
			return this.finishNode(node, "DeclaredPredicate");
			} else {
			return this.finishNode(node, "InferredPredicate");
			}
			}

			flowParseTypeAndPredicateInitialiser() {
			const oldInType = this.state.inType;
			this.state.inType = true;
			this.expect(types.colon);
			let type = null;
			let predicate = null;

			if (this.match(types.modulo)) {
			this.state.inType = oldInType;
			predicate = this.flowParsePredicate();
			} else {
			type = this.flowParseType();
			this.state.inType = oldInType;

			if (this.match(types.modulo)) {
			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.isRelational("<")) {
			typeNode.typeParameters = this.flowParseTypeParameterDeclaration();
			} else {
			typeNode.typeParameters = null;
			}

			this.expect(types.parenL);
			const tmp = this.flowParseFunctionTypeParams();
			typeNode.params = tmp.params;
			typeNode.rest = tmp.rest;
			this.expect(types.parenR);
			[typeNode.returnType, node.predicate] = this.flowParseTypeAndPredicateInitialiser();
			typeContainer.typeAnnotation = this.finishNode(typeNode, "FunctionTypeAnnotation");
			id.typeAnnotation = this.finishNode(typeContainer, "TypeAnnotation");
			this.resetEndLocation(id);
			this.semicolon();
			return this.finishNode(node, "DeclareFunction");
			}

			flowParseDeclare(node, insideModule) {
			if (this.match(types._class)) {
			return this.flowParseDeclareClass(node);
			} else if (this.match(types._function)) {
			return this.flowParseDeclareFunction(node);
			} else if (this.match(types._var)) {
			return this.flowParseDeclareVariable(node);
			} else if (this.eatContextual("module")) {
			if (this.match(types.dot)) {
			return this.flowParseDeclareModuleExports(node);
			} else {
			if (insideModule) {
			this.raise(this.state.lastTokStart, FlowErrors.NestedDeclareModule);
			}

			return this.flowParseDeclareModule(node);
			}
			} else if (this.isContextual("type")) {
			return this.flowParseDeclareTypeAlias(node);
			} else if (this.isContextual("opaque")) {
			return this.flowParseDeclareOpaqueType(node);
			} else if (this.isContextual("interface")) {
			return this.flowParseDeclareInterface(node);
			} else if (this.match(types._export)) {
			return this.flowParseDeclareExportDeclaration(node, insideModule);
			} else {
			throw this.unexpected();
			}
			}

			flowParseDeclareVariable(node) {
			this.next();
			node.id = this.flowParseTypeAnnotatableIdentifier(true);
			this.scope.declareName(node.id.name, BIND_VAR, node.id.start);
			this.semicolon();
			return this.finishNode(node, "DeclareVariable");
			}

			flowParseDeclareModule(node) {
			this.scope.enter(SCOPE_OTHER);

			if (this.match(types.string)) {
			node.id = this.parseExprAtom();
			} else {
			node.id = this.parseIdentifier();
			}

			const bodyNode = node.body = this.startNode();
			const body = bodyNode.body = [];
			this.expect(types.braceL);

			while (!this.match(types.braceR)) {
			let bodyNode = this.startNode();

			if (this.match(types._import)) {
			this.next();

			if (!this.isContextual("type") && !this.match(types._typeof)) {
			this.raise(this.state.lastTokStart, FlowErrors.InvalidNonTypeImportInDeclareModule);
			}

			this.parseImport(bodyNode);
			} else {
			this.expectContextual("declare", FlowErrors.UnsupportedStatementInDeclareModule);
			bodyNode = this.flowParseDeclare(bodyNode, true);
			}

			body.push(bodyNode);
			}

			this.scope.exit();
			this.expect(types.braceR);
			this.finishNode(bodyNode, "BlockStatement");
			let kind = null;
			let hasModuleExport = false;
			body.forEach(bodyElement => {
			if (isEsModuleType(bodyElement)) {
			if (kind === "CommonJS") {
			this.raise(bodyElement.start, FlowErrors.AmbiguousDeclareModuleKind);
			}

			kind = "ES";
			} else if (bodyElement.type === "DeclareModuleExports") {
			if (hasModuleExport) {
			this.raise(bodyElement.start, FlowErrors.DuplicateDeclareModuleExports);
			}

			if (kind === "ES") {
			this.raise(bodyElement.start, FlowErrors.AmbiguousDeclareModuleKind);
			}

			kind = "CommonJS";
			hasModuleExport = true;
			}
			});
			node.kind = kind \|\| "CommonJS";
			return this.finishNode(node, "DeclareModule");
			}

			flowParseDeclareExportDeclaration(node, insideModule) {
			this.expect(types._export);

			if (this.eat(types._default)) {
			if (this.match(types._function) \|\| this.match(types._class)) {
			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(types._const) \|\| this.isLet() \|\| (this.isContextual("type") \|\| this.isContextual("interface")) && !insideModule) {
			const label = this.state.value;
			const suggestion = exportSuggestions[label];
			throw this.raise(this.state.start, FlowErrors.UnsupportedDeclareExportKind, label, suggestion);
			}

			if (this.match(types._var) \|\| this.match(types._function) \|\| this.match(types._class) \|\| this.isContextual("opaque")) {
			node.declaration = this.flowParseDeclare(this.startNode());
			node.default = false;
			return this.finishNode(node, "DeclareExportDeclaration");
			} else if (this.match(types.star) \|\| this.match(types.braceL) \|\| this.isContextual("interface") \|\| this.isContextual("type") \|\| this.isContextual("opaque")) {
			node = this.parseExport(node);

			if (node.type === "ExportNamedDeclaration") {
			node.type = "ExportDeclaration";
			node.default = false;
			delete node.exportKind;
			}

			node.type = "Declare" + node.type;
			return node;
			}
			}

			throw this.unexpected();
			}

			flowParseDeclareModuleExports(node) {
			this.next();
			this.expectContextual("exports");
			node.typeAnnotation = this.flowParseTypeAnnotation();
			this.semicolon();
			return this.finishNode(node, "DeclareModuleExports");
			}

			flowParseDeclareTypeAlias(node) {
			this.next();
			this.flowParseTypeAlias(node);
			node.type = "DeclareTypeAlias";
			return node;
			}

			flowParseDeclareOpaqueType(node) {
			this.next();
			this.flowParseOpaqueType(node, true);
			node.type = "DeclareOpaqueType";
			return node;
			}

			flowParseDeclareInterface(node) {
			this.next();
			this.flowParseInterfaceish(node);
			return this.finishNode(node, "DeclareInterface");
			}

			flowParseInterfaceish(node, isClass = false) {
			node.id = this.flowParseRestrictedIdentifier(!isClass, true);
			this.scope.declareName(node.id.name, isClass ? BIND_FUNCTION : BIND_LEXICAL, node.id.start);

			if (this.isRelational("<")) {
			node.typeParameters = this.flowParseTypeParameterDeclaration();
			} else {
			node.typeParameters = null;
			}

			node.extends = [];
			node.implements = [];
			node.mixins = [];

			if (this.eat(types._extends)) {
			do {
			node.extends.push(this.flowParseInterfaceExtends());
			} while (!isClass && this.eat(types.comma));
			}

			if (this.isContextual("mixins")) {
			this.next();

			do {
			node.mixins.push(this.flowParseInterfaceExtends());
			} while (this.eat(types.comma));
			}

			if (this.isContextual("implements")) {
			this.next();

			do {
			node.implements.push(this.flowParseInterfaceExtends());
			} while (this.eat(types.comma));
			}

			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.isRelational("<")) {
			node.typeParameters = this.flowParseTypeParameterInstantiation();
			} else {
			node.typeParameters = null;
			}

			return this.finishNode(node, "InterfaceExtends");
			}

			flowParseInterface(node) {
			this.flowParseInterfaceish(node);
			return this.finishNode(node, "InterfaceDeclaration");
			}

			checkNotUnderscore(word) {
			if (word === "_") {
			this.raise(this.state.start, FlowErrors.UnexpectedReservedUnderscore);
			}
			}

			checkReservedType(word, startLoc, declaration) {
			if (!reservedTypes.has(word)) return;
			this.raise(startLoc, declaration ? FlowErrors.AssignReservedType : FlowErrors.UnexpectedReservedType, word);
			}

			flowParseRestrictedIdentifier(liberal, declaration) {
			this.checkReservedType(this.state.value, this.state.start, declaration);
			return this.parseIdentifier(liberal);
			}

			flowParseTypeAlias(node) {
			node.id = this.flowParseRestrictedIdentifier(false, true);
			this.scope.declareName(node.id.name, BIND_LEXICAL, node.id.start);

			if (this.isRelational("<")) {
			node.typeParameters = this.flowParseTypeParameterDeclaration();
			} else {
			node.typeParameters = null;
			}

			node.right = this.flowParseTypeInitialiser(types.eq);
			this.semicolon();
			return this.finishNode(node, "TypeAlias");
			}

			flowParseOpaqueType(node, declare) {
			this.expectContextual("type");
			node.id = this.flowParseRestrictedIdentifier(true, true);
			this.scope.declareName(node.id.name, BIND_LEXICAL, node.id.start);

			if (this.isRelational("<")) {
			node.typeParameters = this.flowParseTypeParameterDeclaration();
			} else {
			node.typeParameters = null;
			}

			node.supertype = null;

			if (this.match(types.colon)) {
			node.supertype = this.flowParseTypeInitialiser(types.colon);
			}

			node.impltype = null;

			if (!declare) {
			node.impltype = this.flowParseTypeInitialiser(types.eq);
			}

			this.semicolon();
			return this.finishNode(node, "OpaqueType");
			}

			flowParseTypeParameter(requireDefault = false) {
			const nodeStart = this.state.start;
			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(types.eq)) {
			this.eat(types.eq);
			node.default = this.flowParseType();
			} else {
			if (requireDefault) {
			this.raise(nodeStart, FlowErrors.MissingTypeParamDefault);
			}
			}

			return this.finishNode(node, "TypeParameter");
			}

			flowParseTypeParameterDeclaration() {
			const oldInType = this.state.inType;
			const node = this.startNode();
			node.params = [];
			this.state.inType = true;

			if (this.isRelational("<") \|\| this.match(types.jsxTagStart)) {
			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.isRelational(">")) {
			this.expect(types.comma);
			}
			} while (!this.isRelational(">"));

			this.expectRelational(">");
			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.expectRelational("<");
			const oldNoAnonFunctionType = this.state.noAnonFunctionType;
			this.state.noAnonFunctionType = false;

			while (!this.isRelational(">")) {
			node.params.push(this.flowParseType());

			if (!this.isRelational(">")) {
			this.expect(types.comma);
			}
			}

			this.state.noAnonFunctionType = oldNoAnonFunctionType;
			this.expectRelational(">");
			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.expectRelational("<");

			while (!this.isRelational(">")) {
			node.params.push(this.flowParseTypeOrImplicitInstantiation());

			if (!this.isRelational(">")) {
			this.expect(types.comma);
			}
			}

			this.expectRelational(">");
			this.state.inType = oldInType;
			return this.finishNode(node, "TypeParameterInstantiation");
			}

			flowParseInterfaceType() {
			const node = this.startNode();
			this.expectContextual("interface");
			node.extends = [];

			if (this.eat(types._extends)) {
			do {
			node.extends.push(this.flowParseInterfaceExtends());
			} while (this.eat(types.comma));
			}

			node.body = this.flowParseObjectType({
			allowStatic: false,
			allowExact: false,
			allowSpread: false,
			allowProto: false,
			allowInexact: false
			});
			return this.finishNode(node, "InterfaceTypeAnnotation");
			}

			flowParseObjectPropertyKey() {
			return this.match(types.num) \|\| this.match(types.string) ? this.parseExprAtom() : this.parseIdentifier(true);
			}

			flowParseObjectTypeIndexer(node, isStatic, variance) {
			node.static = isStatic;

			if (this.lookahead().type === types.colon) {
			node.id = this.flowParseObjectPropertyKey();
			node.key = this.flowParseTypeInitialiser();
			} else {
			node.id = null;
			node.key = this.flowParseType();
			}

			this.expect(types.bracketR);
			node.value = this.flowParseTypeInitialiser();
			node.variance = variance;
			return this.finishNode(node, "ObjectTypeIndexer");
			}

			flowParseObjectTypeInternalSlot(node, isStatic) {
			node.static = isStatic;
			node.id = this.flowParseObjectPropertyKey();
			this.expect(types.bracketR);
			this.expect(types.bracketR);

			if (this.isRelational("<") \|\| this.match(types.parenL)) {
			node.method = true;
			node.optional = false;
			node.value = this.flowParseObjectTypeMethodish(this.startNodeAt(node.start, node.loc.start));
			} else {
			node.method = false;

			if (this.eat(types.question)) {
			node.optional = true;
			}

			node.value = this.flowParseTypeInitialiser();
			}

			return this.finishNode(node, "ObjectTypeInternalSlot");
			}

			flowParseObjectTypeMethodish(node) {
			node.params = [];
			node.rest = null;
			node.typeParameters = null;

			if (this.isRelational("<")) {
			node.typeParameters = this.flowParseTypeParameterDeclaration();
			}

			this.expect(types.parenL);

			while (!this.match(types.parenR) && !this.match(types.ellipsis)) {
			node.params.push(this.flowParseFunctionTypeParam());

			if (!this.match(types.parenR)) {
			this.expect(types.comma);
			}
			}

			if (this.eat(types.ellipsis)) {
			node.rest = this.flowParseFunctionTypeParam();
			}

			this.expect(types.parenR);
			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(types.braceBarL)) {
			this.expect(types.braceBarL);
			endDelim = types.braceBarR;
			exact = true;
			} else {
			this.expect(types.braceL);
			endDelim = types.braceR;
			exact = false;
			}

			nodeStart.exact = exact;

			while (!this.match(endDelim)) {
			let isStatic = false;
			let protoStart = null;
			let inexactStart = null;
			const node = this.startNode();

			if (allowProto && this.isContextual("proto")) {
			const lookahead = this.lookahead();

			if (lookahead.type !== types.colon && lookahead.type !== types.question) {
			this.next();
			protoStart = this.state.start;
			allowStatic = false;
			}
			}

			if (allowStatic && this.isContextual("static")) {
			const lookahead = this.lookahead();

			if (lookahead.type !== types.colon && lookahead.type !== types.question) {
			this.next();
			isStatic = true;
			}
			}

			const variance = this.flowParseVariance();

			if (this.eat(types.bracketL)) {
			if (protoStart != null) {
			this.unexpected(protoStart);
			}

			if (this.eat(types.bracketL)) {
			if (variance) {
			this.unexpected(variance.start);
			}

			nodeStart.internalSlots.push(this.flowParseObjectTypeInternalSlot(node, isStatic));
			} else {
			nodeStart.indexers.push(this.flowParseObjectTypeIndexer(node, isStatic, variance));
			}
			} else if (this.match(types.parenL) \|\| this.isRelational("<")) {
			if (protoStart != null) {
			this.unexpected(protoStart);
			}

			if (variance) {
			this.unexpected(variance.start);
			}

			nodeStart.callProperties.push(this.flowParseObjectTypeCallProperty(node, isStatic));
			} else {
			let kind = "init";

			if (this.isContextual("get") \|\| this.isContextual("set")) {
			const lookahead = this.lookahead();

			if (lookahead.type === types.name \|\| lookahead.type === types.string \|\| lookahead.type === types.num) {
			kind = this.state.value;
			this.next();
			}
			}

			const propOrInexact = this.flowParseObjectTypeProperty(node, isStatic, protoStart, variance, kind, allowSpread, allowInexact != null ? allowInexact : !exact);

			if (propOrInexact === null) {
			inexact = true;
			inexactStart = this.state.lastTokStart;
			} else {
			nodeStart.properties.push(propOrInexact);
			}
			}

			this.flowObjectTypeSemicolon();

			if (inexactStart && !this.match(types.braceR) && !this.match(types.braceBarR)) {
			this.raise(inexactStart, FlowErrors.UnexpectedExplicitInexactInObject);
			}
			}

			this.expect(endDelim);

			if (allowSpread) {
			nodeStart.inexact = inexact;
			}

			const out = this.finishNode(nodeStart, "ObjectTypeAnnotation");
			this.state.inType = oldInType;
			return out;
			}

			flowParseObjectTypeProperty(node, isStatic, protoStart, variance, kind, allowSpread, allowInexact) {
			if (this.eat(types.ellipsis)) {
			const isInexactToken = this.match(types.comma) \|\| this.match(types.semi) \|\| this.match(types.braceR) \|\| this.match(types.braceBarR);

			if (isInexactToken) {
			if (!allowSpread) {
			this.raise(this.state.lastTokStart, FlowErrors.InexactInsideNonObject);
			} else if (!allowInexact) {
			this.raise(this.state.lastTokStart, FlowErrors.InexactInsideExact);
			}

			if (variance) {
			this.raise(variance.start, FlowErrors.InexactVariance);
			}

			return null;
			}

			if (!allowSpread) {
			this.raise(this.state.lastTokStart, FlowErrors.UnexpectedSpreadType);
			}

			if (protoStart != null) {
			this.unexpected(protoStart);
			}

			if (variance) {
			this.raise(variance.start, FlowErrors.SpreadVariance);
			}

			node.argument = this.flowParseType();
			return this.finishNode(node, "ObjectTypeSpreadProperty");
			} else {
			node.key = this.flowParseObjectPropertyKey();
			node.static = isStatic;
			node.proto = protoStart != null;
			node.kind = kind;
			let optional = false;

			if (this.isRelational("<") \|\| this.match(types.parenL)) {
			node.method = true;

			if (protoStart != null) {
			this.unexpected(protoStart);
			}

			if (variance) {
			this.unexpected(variance.start);
			}

			node.value = this.flowParseObjectTypeMethodish(this.startNodeAt(node.start, node.loc.start));

			if (kind === "get" \|\| kind === "set") {
			this.flowCheckGetterSetterParams(node);
			}
			} else {
			if (kind !== "init") this.unexpected();
			node.method = false;

			if (this.eat(types.question)) {
			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 start = property.start;
			const length = property.value.params.length + (property.value.rest ? 1 : 0);

			if (length !== paramCount) {
			if (property.kind === "get") {
			this.raise(start, ErrorMessages.BadGetterArity);
			} else {
			this.raise(start, ErrorMessages.BadSetterArity);
			}
			}

			if (property.kind === "set" && property.value.rest) {
			this.raise(start, ErrorMessages.BadSetterRestParameter);
			}
			}

			flowObjectTypeSemicolon() {
			if (!this.eat(types.semi) && !this.eat(types.comma) && !this.match(types.braceR) && !this.match(types.braceBarR)) {
			this.unexpected();
			}
			}

			flowParseQualifiedTypeIdentifier(startPos, startLoc, id) {
			startPos = startPos \|\| this.state.start;
			startLoc = startLoc \|\| this.state.startLoc;
			let node = id \|\| this.flowParseRestrictedIdentifier(true);

			while (this.eat(types.dot)) {
			const node2 = this.startNodeAt(startPos, startLoc);
			node2.qualification = node;
			node2.id = this.flowParseRestrictedIdentifier(true);
			node = this.finishNode(node2, "QualifiedTypeIdentifier");
			}

			return node;
			}

			flowParseGenericType(startPos, startLoc, id) {
			const node = this.startNodeAt(startPos, startLoc);
			node.typeParameters = null;
			node.id = this.flowParseQualifiedTypeIdentifier(startPos, startLoc, id);

			if (this.isRelational("<")) {
			node.typeParameters = this.flowParseTypeParameterInstantiation();
			}

			return this.finishNode(node, "GenericTypeAnnotation");
			}

			flowParseTypeofType() {
			const node = this.startNode();
			this.expect(types._typeof);
			node.argument = this.flowParsePrimaryType();
			return this.finishNode(node, "TypeofTypeAnnotation");
			}

			flowParseTupleType() {
			const node = this.startNode();
			node.types = [];
			this.expect(types.bracketL);

			while (this.state.pos < this.length && !this.match(types.bracketR)) {
			node.types.push(this.flowParseType());
			if (this.match(types.bracketR)) break;
			this.expect(types.comma);
			}

			this.expect(types.bracketR);
			return this.finishNode(node, "TupleTypeAnnotation");
			}

			flowParseFunctionTypeParam() {
			let name = null;
			let optional = false;
			let typeAnnotation = null;
			const node = this.startNode();
			const lh = this.lookahead();

			if (lh.type === types.colon \|\| lh.type === types.question) {
			name = this.parseIdentifier();

			if (this.eat(types.question)) {
			optional = true;
			}

			typeAnnotation = this.flowParseTypeInitialiser();
			} else {
			typeAnnotation = this.flowParseType();
			}

			node.name = name;
			node.optional = optional;
			node.typeAnnotation = typeAnnotation;
			return this.finishNode(node, "FunctionTypeParam");
			}

			reinterpretTypeAsFunctionTypeParam(type) {
			const node = this.startNodeAt(type.start, type.loc.start);
			node.name = null;
			node.optional = false;
			node.typeAnnotation = type;
			return this.finishNode(node, "FunctionTypeParam");
			}

			flowParseFunctionTypeParams(params = []) {
			let rest = null;

			while (!this.match(types.parenR) && !this.match(types.ellipsis)) {
			params.push(this.flowParseFunctionTypeParam());

			if (!this.match(types.parenR)) {
			this.expect(types.comma);
			}
			}

			if (this.eat(types.ellipsis)) {
			rest = this.flowParseFunctionTypeParam();
			}

			return {
			params,
			rest
			};
			}

			flowIdentToTypeAnnotation(startPos, startLoc, node, id) {
			switch (id.name) {
			case "any":
			return this.finishNode(node, "AnyTypeAnnotation");

			case "bool":
			case "boolean":
			return this.finishNode(node, "BooleanTypeAnnotation");

			case "mixed":
			return this.finishNode(node, "MixedTypeAnnotation");

			case "empty":
			return this.finishNode(node, "EmptyTypeAnnotation");

			case "number":
			return this.finishNode(node, "NumberTypeAnnotation");

			case "string":
			return this.finishNode(node, "StringTypeAnnotation");

			case "symbol":
			return this.finishNode(node, "SymbolTypeAnnotation");

			default:
			this.checkNotUnderscore(id.name);
			return this.flowParseGenericType(startPos, startLoc, id);
			}
			}

			flowParsePrimaryType() {
			const startPos = this.state.start;
			const startLoc = this.state.startLoc;
			const node = this.startNode();
			let tmp;
			let type;
			let isGroupedType = false;
			const oldNoAnonFunctionType = this.state.noAnonFunctionType;

			switch (this.state.type) {
			case types.name:
			if (this.isContextual("interface")) {
			return this.flowParseInterfaceType();
			}

			return this.flowIdentToTypeAnnotation(startPos, startLoc, node, this.parseIdentifier());

			case types.braceL:
			return this.flowParseObjectType({
			allowStatic: false,
			allowExact: false,
			allowSpread: true,
			allowProto: false,
			allowInexact: true
			});

			case types.braceBarL:
			return this.flowParseObjectType({
			allowStatic: false,
			allowExact: true,
			allowSpread: true,
			allowProto: false,
			allowInexact: false
			});

			case types.bracketL:
			this.state.noAnonFunctionType = false;
			type = this.flowParseTupleType();
			this.state.noAnonFunctionType = oldNoAnonFunctionType;
			return type;

			case types.relational:
			if (this.state.value === "<") {
			node.typeParameters = this.flowParseTypeParameterDeclaration();
			this.expect(types.parenL);
			tmp = this.flowParseFunctionTypeParams();
			node.params = tmp.params;
			node.rest = tmp.rest;
			this.expect(types.parenR);
			this.expect(types.arrow);
			node.returnType = this.flowParseType();
			return this.finishNode(node, "FunctionTypeAnnotation");
			}

			break;

			case types.parenL:
			this.next();

			if (!this.match(types.parenR) && !this.match(types.ellipsis)) {
			if (this.match(types.name)) {
			const token = this.lookahead().type;
			isGroupedType = token !== types.question && token !== types.colon;
			} else {
			isGroupedType = true;
			}
			}

			if (isGroupedType) {
			this.state.noAnonFunctionType = false;
			type = this.flowParseType();
			this.state.noAnonFunctionType = oldNoAnonFunctionType;

			if (this.state.noAnonFunctionType \|\| !(this.match(types.comma) \|\| this.match(types.parenR) && this.lookahead().type === types.arrow)) {
			this.expect(types.parenR);
			return type;
			} else {
			this.eat(types.comma);
			}
			}

			if (type) {
			tmp = this.flowParseFunctionTypeParams([this.reinterpretTypeAsFunctionTypeParam(type)]);
			} else {
			tmp = this.flowParseFunctionTypeParams();
			}

			node.params = tmp.params;
			node.rest = tmp.rest;
			this.expect(types.parenR);
			this.expect(types.arrow);
			node.returnType = this.flowParseType();
			node.typeParameters = null;
			return this.finishNode(node, "FunctionTypeAnnotation");

			case types.string:
			return this.parseLiteral(this.state.value, "StringLiteralTypeAnnotation");

			case types._true:
			case types._false:
			node.value = this.match(types._true);
			this.next();
			return this.finishNode(node, "BooleanLiteralTypeAnnotation");

			case types.plusMin:
			if (this.state.value === "-") {
			this.next();

			if (this.match(types.num)) {
			return this.parseLiteral(-this.state.value, "NumberLiteralTypeAnnotation", node.start, node.loc.start);
			}

			if (this.match(types.bigint)) {
			return this.parseLiteral(-this.state.value, "BigIntLiteralTypeAnnotation", node.start, node.loc.start);
			}

			throw this.raise(this.state.start, FlowErrors.UnexpectedSubtractionOperand);
			}

			throw this.unexpected();

			case types.num:
			return this.parseLiteral(this.state.value, "NumberLiteralTypeAnnotation");

			case types.bigint:
			return this.parseLiteral(this.state.value, "BigIntLiteralTypeAnnotation");

			case types._void:
			this.next();
			return this.finishNode(node, "VoidTypeAnnotation");

			case types._null:
			this.next();
			return this.finishNode(node, "NullLiteralTypeAnnotation");

			case types._this:
			this.next();
			return this.finishNode(node, "ThisTypeAnnotation");

			case types.star:
			this.next();
			return this.finishNode(node, "ExistsTypeAnnotation");

			default:
			if (this.state.type.keyword === "typeof") {
			return this.flowParseTypeofType();
			} else if (this.state.type.keyword) {
			const label = this.state.type.label;
			this.next();
			return super.createIdentifier(node, label);
			}

			}

			throw this.unexpected();
			}

			flowParsePostfixType() {
			const startPos = this.state.start,
			startLoc = this.state.startLoc;
			let type = this.flowParsePrimaryType();

			while (this.match(types.bracketL) && !this.canInsertSemicolon()) {
			const node = this.startNodeAt(startPos, startLoc);
			node.elementType = type;
			this.expect(types.bracketL);
			this.expect(types.bracketR);
			type = this.finishNode(node, "ArrayTypeAnnotation");
			}

			return type;
			}

			flowParsePrefixType() {
			const node = this.startNode();

			if (this.eat(types.question)) {
			node.typeAnnotation = this.flowParsePrefixType();
			return this.finishNode(node, "NullableTypeAnnotation");
			} else {
			return this.flowParsePostfixType();
			}
			}

			flowParseAnonFunctionWithoutParens() {
			const param = this.flowParsePrefixType();

			if (!this.state.noAnonFunctionType && this.eat(types.arrow)) {
			const node = this.startNodeAt(param.start, param.loc.start);
			node.params = [this.reinterpretTypeAsFunctionTypeParam(param)];
			node.rest = null;
			node.returnType = this.flowParseType();
			node.typeParameters = null;
			return this.finishNode(node, "FunctionTypeAnnotation");
			}

			return param;
			}

			flowParseIntersectionType() {
			const node = this.startNode();
			this.eat(types.bitwiseAND);
			const type = this.flowParseAnonFunctionWithoutParens();
			node.types = [type];

			while (this.eat(types.bitwiseAND)) {
			node.types.push(this.flowParseAnonFunctionWithoutParens());
			}

			return node.types.length === 1 ? type : this.finishNode(node, "IntersectionTypeAnnotation");
			}

			flowParseUnionType() {
			const node = this.startNode();
			this.eat(types.bitwiseOR);
			const type = this.flowParseIntersectionType();
			node.types = [type];

			while (this.eat(types.bitwiseOR)) {
			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;
			this.state.exprAllowed = this.state.exprAllowed \|\| this.state.noAnonFunctionType;
			return type;
			}

			flowParseTypeOrImplicitInstantiation() {
			if (this.state.type === types.name && this.state.value === "_") {
			const startPos = this.state.start;
			const startLoc = this.state.startLoc;
			const node = this.parseIdentifier();
			return this.flowParseGenericType(startPos, startLoc, node);
			} else {
			return this.flowParseType();
			}
			}

			flowParseTypeAnnotation() {
			const node = this.startNode();
			node.typeAnnotation = this.flowParseTypeInitialiser();
			return this.finishNode(node, "TypeAnnotation");
			}

			flowParseTypeAnnotatableIdentifier(allowPrimitiveOverride) {
			const ident = allowPrimitiveOverride ? this.parseIdentifier() : this.flowParseRestrictedIdentifier();

			if (this.match(types.colon)) {
			ident.typeAnnotation = this.flowParseTypeAnnotation();
			this.resetEndLocation(ident);
			}

			return ident;
			}

			typeCastToParameter(node) {
			node.expression.typeAnnotation = node.typeAnnotation;
			this.resetEndLocation(node.expression, node.typeAnnotation.end, node.typeAnnotation.loc.end);
			return node.expression;
			}

			flowParseVariance() {
			let variance = null;

			if (this.match(types.plusMin)) {
			variance = this.startNode();

			if (this.state.value === "+") {
			variance.kind = "plus";
			} else {
			variance.kind = "minus";
			}

			this.next();
			this.finishNode(variance, "Variance");
			}

			return variance;
			}

			parseFunctionBody(node, allowExpressionBody, isMethod = false) {
			if (allowExpressionBody) {
			return this.forwardNoArrowParamsConversionAt(node, () => super.parseFunctionBody(node, true, isMethod));
			}

			return super.parseFunctionBody(node, false, isMethod);
			}

			parseFunctionBodyAndFinish(node, type, isMethod = false) {
			if (this.match(types.colon)) {
			const typeNode = this.startNode();
			[typeNode.typeAnnotation, node.predicate] = this.flowParseTypeAndPredicateInitialiser();
			node.returnType = typeNode.typeAnnotation ? this.finishNode(typeNode, "TypeAnnotation") : null;
			}

			super.parseFunctionBodyAndFinish(node, type, isMethod);
			}

			parseStatement(context, topLevel) {
			if (this.state.strict && this.match(types.name) && this.state.value === "interface") {
			const lookahead = this.lookahead();

			if (lookahead.type === types.name \|\| isKeyword(lookahead.value)) {
			const node = this.startNode();
			this.next();
			return this.flowParseInterface(node);
			}
			} else if (this.shouldParseEnums() && this.isContextual("enum")) {
			const node = this.startNode();
			this.next();
			return this.flowParseEnumDeclaration(node);
			}

			const stmt = super.parseStatement(context, topLevel);

			if (this.flowPragma === undefined && !this.isValidDirective(stmt)) {
			this.flowPragma = null;
			}

			return stmt;
			}

			parseExpressionStatement(node, expr) {
			if (expr.type === "Identifier") {
			if (expr.name === "declare") {
			if (this.match(types._class) \|\| this.match(types.name) \|\| this.match(types._function) \|\| this.match(types._var) \|\| this.match(types._export)) {
			return this.flowParseDeclare(node);
			}
			} else if (this.match(types.name)) {
			if (expr.name === "interface") {
			return this.flowParseInterface(node);
			} else if (expr.name === "type") {
			return this.flowParseTypeAlias(node);
			} else if (expr.name === "opaque") {
			return this.flowParseOpaqueType(node, false);
			}
			}
			}

			return super.parseExpressionStatement(node, expr);
			}

			shouldParseExportDeclaration() {
			return this.isContextual("type") \|\| this.isContextual("interface") \|\| this.isContextual("opaque") \|\| this.shouldParseEnums() && this.isContextual("enum") \|\| super.shouldParseExportDeclaration();
			}

			isExportDefaultSpecifier() {
			if (this.match(types.name) && (this.state.value === "type" \|\| this.state.value === "interface" \|\| this.state.value === "opaque" \|\| this.shouldParseEnums() && this.state.value === "enum")) {
			return false;
			}

			return super.isExportDefaultSpecifier();
			}

			parseExportDefaultExpression() {
			if (this.shouldParseEnums() && this.isContextual("enum")) {
			const node = this.startNode();
			this.next();
			return this.flowParseEnumDeclaration(node);
			}

			return super.parseExportDefaultExpression();
			}

			parseConditional(expr, startPos, startLoc, refNeedsArrowPos) {
			if (!this.match(types.question)) return expr;

			if (refNeedsArrowPos) {
			const result = this.tryParse(() => super.parseConditional(expr, startPos, startLoc));

			if (!result.node) {
			refNeedsArrowPos.start = result.error.pos \|\| this.state.start;
			return expr;
			}

			if (result.error) this.state = result.failState;
			return result.node;
			}

			this.expect(types.question);
			const state = this.state.clone();
			const originalNoArrowAt = this.state.noArrowAt;
			const node = this.startNodeAt(startPos, startLoc);
			let {
			consequent,
			failed
			} = this.tryParseConditionalConsequent();
			let [valid, invalid] = this.getArrowLikeExpressions(consequent);

			if (failed \|\| invalid.length > 0) {
			const noArrowAt = [...originalNoArrowAt];

			if (invalid.length > 0) {
			this.state = state;
			this.state.noArrowAt = noArrowAt;

			for (let i = 0; i < invalid.length; i++) {
			noArrowAt.push(invalid[i].start);
			}

			({
			consequent,
			failed
			} = this.tryParseConditionalConsequent());
			[valid, invalid] = this.getArrowLikeExpressions(consequent);
			}

			if (failed && valid.length > 1) {
			this.raise(state.start, FlowErrors.AmbiguousConditionalArrow);
			}

			if (failed && valid.length === 1) {
			this.state = state;
			this.state.noArrowAt = noArrowAt.concat(valid[0].start);
			({
			consequent,
			failed
			} = this.tryParseConditionalConsequent());
			}
			}

			this.getArrowLikeExpressions(consequent, true);
			this.state.noArrowAt = originalNoArrowAt;
			this.expect(types.colon);
			node.test = expr;
			node.consequent = consequent;
			node.alternate = this.forwardNoArrowParamsConversionAt(node, () => this.parseMaybeAssign(undefined, undefined, undefined));
			return this.finishNode(node, "ConditionalExpression");
			}

			tryParseConditionalConsequent() {
			this.state.noArrowParamsConversionAt.push(this.state.start);
			const consequent = this.parseMaybeAssignAllowIn();
			const failed = !this.match(types.colon);
			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.trailingComma, false);
			this.scope.enter(SCOPE_FUNCTION \| SCOPE_ARROW);
			super.checkParams(node, false, true);
			this.scope.exit();
			}

			forwardNoArrowParamsConversionAt(node, parse) {
			let result;

			if (this.state.noArrowParamsConversionAt.indexOf(node.start) !== -1) {
			this.state.noArrowParamsConversionAt.push(this.state.start);
			result = parse();
			this.state.noArrowParamsConversionAt.pop();
			} else {
			result = parse();
			}

			return result;
			}

			parseParenItem(node, startPos, startLoc) {
			node = super.parseParenItem(node, startPos, startLoc);

			if (this.eat(types.question)) {
			node.optional = true;
			this.resetEndLocation(node);
			}

			if (this.match(types.colon)) {
			const typeCastNode = this.startNodeAt(startPos, startLoc);
			typeCastNode.expression = node;
			typeCastNode.typeAnnotation = this.flowParseTypeAnnotation();
			return this.finishNode(typeCastNode, "TypeCastExpression");
			}

			return node;
			}

			assertModuleNodeAllowed(node) {
			if (node.type === "ImportDeclaration" && (node.importKind === "type" \|\| node.importKind === "typeof") \|\| node.type === "ExportNamedDeclaration" && node.exportKind === "type" \|\| node.type === "ExportAllDeclaration" && node.exportKind === "type") {
			return;
			}

			super.assertModuleNodeAllowed(node);
			}

			parseExport(node) {
			const decl = super.parseExport(node);

			if (decl.type === "ExportNamedDeclaration" \|\| decl.type === "ExportAllDeclaration") {
			decl.exportKind = decl.exportKind \|\| "value";
			}

			return decl;
			}

			parseExportDeclaration(node) {
			if (this.isContextual("type")) {
			node.exportKind = "type";
			const declarationNode = this.startNode();
			this.next();

			if (this.match(types.braceL)) {
			node.specifiers = this.parseExportSpecifiers();
			this.parseExportFrom(node);
			return null;
			} else {
			return this.flowParseTypeAlias(declarationNode);
			}
			} else if (this.isContextual("opaque")) {
			node.exportKind = "type";
			const declarationNode = this.startNode();
			this.next();
			return this.flowParseOpaqueType(declarationNode, false);
			} else if (this.isContextual("interface")) {
			node.exportKind = "type";
			const declarationNode = this.startNode();
			this.next();
			return this.flowParseInterface(declarationNode);
			} else if (this.shouldParseEnums() && this.isContextual("enum")) {
			node.exportKind = "value";
			const declarationNode = this.startNode();
			this.next();
			return this.flowParseEnumDeclaration(declarationNode);
			} else {
			return super.parseExportDeclaration(node);
			}
			}

			eatExportStar(node) {
			if (super.eatExportStar(...arguments)) return true;

			if (this.isContextual("type") && this.lookahead().type === types.star) {
			node.exportKind = "type";
			this.next();
			this.next();
			return true;
			}

			return false;
			}

			maybeParseExportNamespaceSpecifier(node) {
			const pos = this.state.start;
			const hasNamespace = super.maybeParseExportNamespaceSpecifier(node);

			if (hasNamespace && node.exportKind === "type") {
			this.unexpected(pos);
			}

			return hasNamespace;
			}

			parseClassId(node, isStatement, optionalId) {
			super.parseClassId(node, isStatement, optionalId);

			if (this.isRelational("<")) {
			node.typeParameters = this.flowParseTypeParameterDeclaration();
			}
			}

			parseClassMember(classBody, member, state) {
			const pos = this.state.start;

			if (this.isContextual("declare")) {
			if (this.parseClassMemberFromModifier(classBody, member)) {
			return;
			}

			member.declare = true;
			}

			super.parseClassMember(classBody, member, state);

			if (member.declare) {
			if (member.type !== "ClassProperty" && member.type !== "ClassPrivateProperty") {
			this.raise(pos, FlowErrors.DeclareClassElement);
			} else if (member.value) {
			this.raise(member.value.start, FlowErrors.DeclareClassFieldInitializer);
			}
			}
			}

			getTokenFromCode(code) {
			const next = this.input.charCodeAt(this.state.pos + 1);

			if (code === 123 && next === 124) {
			return this.finishOp(types.braceBarL, 2);
			} else if (this.state.inType && (code === 62 \|\| code === 60)) {
			return this.finishOp(types.relational, 1);
			} else if (this.state.inType && code === 63) {
			return this.finishOp(types.question, 1);
			} else if (isIteratorStart(code, next)) {
			this.state.isIterator = true;
			return super.readWord();
			} else {
			return super.getTokenFromCode(code);
			}
			}

			isAssignable(node, isBinding) {
			switch (node.type) {
			case "Identifier":
			case "ObjectPattern":
			case "ArrayPattern":
			case "AssignmentPattern":
			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 => this.isAssignable(element));

			case "AssignmentExpression":
			return node.operator === "=";

			case "ParenthesizedExpression":
			case "TypeCastExpression":
			return this.isAssignable(node.expression);

			case "MemberExpression":
			case "OptionalMemberExpression":
			return !isBinding;

			default:
			return false;
			}
			}

			toAssignable(node, isLHS = false) {
			if (node.type === "TypeCastExpression") {
			return super.toAssignable(this.typeCastToParameter(node), isLHS);
			} else {
			return super.toAssignable(node, isLHS);
			}
			}

			toAssignableList(exprList, trailingCommaPos, isLHS) {
			for (let i = 0; i < exprList.length; i++) {
			const expr = exprList[i];

			if ((expr == null ? void 0 : expr.type) === "TypeCastExpression") {
			exprList[i] = this.typeCastToParameter(expr);
			}
			}

			return super.toAssignableList(exprList, trailingCommaPos, 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$extra = expr.extra) == null ? void 0 : _expr$extra.parenthesized) && (exprList.length > 1 \|\| !isParenthesizedExpr)) {
			this.raise(expr.typeAnnotation.start, FlowErrors.TypeCastInPattern);
			}
			}

			return exprList;
			}

			parseArrayLike(close, canBePattern, isTuple, refExpressionErrors) {
			const node = super.parseArrayLike(close, canBePattern, isTuple, refExpressionErrors);

			if (canBePattern && !this.state.maybeInArrowParameters) {
			this.toReferencedList(node.elements);
			}

			return node;
			}

			checkLVal(expr, ...args) {
			if (expr.type !== "TypeCastExpression") {
			return super.checkLVal(expr, ...args);
			}
			}

			parseClassProperty(node) {
			if (this.match(types.colon)) {
			node.typeAnnotation = this.flowParseTypeAnnotation();
			}

			return super.parseClassProperty(node);
			}

			parseClassPrivateProperty(node) {
			if (this.match(types.colon)) {
			node.typeAnnotation = this.flowParseTypeAnnotation();
			}

			return super.parseClassPrivateProperty(node);
			}

			isClassMethod() {
			return this.isRelational("<") \|\| super.isClassMethod();
			}

			isClassProperty() {
			return this.match(types.colon) \|\| super.isClassProperty();
			}

			isNonstaticConstructor(method) {
			return !this.match(types.colon) && super.isNonstaticConstructor(method);
			}

			pushClassMethod(classBody, method, isGenerator, isAsync, isConstructor, allowsDirectSuper) {
			if (method.variance) {
			this.unexpected(method.variance.start);
			}

			delete method.variance;

			if (this.isRelational("<")) {
			method.typeParameters = this.flowParseTypeParameterDeclaration();
			}

			super.pushClassMethod(classBody, method, isGenerator, isAsync, isConstructor, allowsDirectSuper);
			}

			pushClassPrivateMethod(classBody, method, isGenerator, isAsync) {
			if (method.variance) {
			this.unexpected(method.variance.start);
			}

			delete method.variance;

			if (this.isRelational("<")) {
			method.typeParameters = this.flowParseTypeParameterDeclaration();
			}

			super.pushClassPrivateMethod(classBody, method, isGenerator, isAsync);
			}

			parseClassSuper(node) {
			super.parseClassSuper(node);

			if (node.superClass && this.isRelational("<")) {
			node.superTypeParameters = this.flowParseTypeParameterInstantiation();
			}

			if (this.isContextual("implements")) {
			this.next();
			const implemented = node.implements = [];

			do {
			const node = this.startNode();
			node.id = this.flowParseRestrictedIdentifier(true);

			if (this.isRelational("<")) {
			node.typeParameters = this.flowParseTypeParameterInstantiation();
			} else {
			node.typeParameters = null;
			}

			implemented.push(this.finishNode(node, "ClassImplements"));
			} while (this.eat(types.comma));
			}
			}

			parsePropertyName(node, isPrivateNameAllowed) {
			const variance = this.flowParseVariance();
			const key = super.parsePropertyName(node, isPrivateNameAllowed);
			node.variance = variance;
			return key;
			}

			parseObjPropValue(prop, startPos, startLoc, isGenerator, isAsync, isPattern, isAccessor, refExpressionErrors) {
			if (prop.variance) {
			this.unexpected(prop.variance.start);
			}

			delete prop.variance;
			let typeParameters;

			if (this.isRelational("<") && !isAccessor) {
			typeParameters = this.flowParseTypeParameterDeclaration();
			if (!this.match(types.parenL)) this.unexpected();
			}

			super.parseObjPropValue(prop, startPos, startLoc, isGenerator, isAsync, isPattern, isAccessor, refExpressionErrors);

			if (typeParameters) {
			(prop.value \|\| prop).typeParameters = typeParameters;
			}
			}

			parseAssignableListItemTypes(param) {
			if (this.eat(types.question)) {
			if (param.type !== "Identifier") {
			this.raise(param.start, FlowErrors.OptionalBindingPattern);
			}

			param.optional = true;
			}

			if (this.match(types.colon)) {
			param.typeAnnotation = this.flowParseTypeAnnotation();
			}

			this.resetEndLocation(param);
			return param;
			}

			parseMaybeDefault(startPos, startLoc, left) {
			const node = super.parseMaybeDefault(startPos, startLoc, left);

			if (node.type === "AssignmentPattern" && node.typeAnnotation && node.right.start < node.typeAnnotation.start) {
			this.raise(node.typeAnnotation.start, FlowErrors.TypeBeforeInitializer);
			}

			return node;
			}

			shouldParseDefaultImport(node) {
			if (!hasTypeImportKind(node)) {
			return super.shouldParseDefaultImport(node);
			}

			return isMaybeDefaultImport(this.state);
			}

			parseImportSpecifierLocal(node, specifier, type, contextDescription) {
			specifier.local = hasTypeImportKind(node) ? this.flowParseRestrictedIdentifier(true, true) : this.parseIdentifier();
			this.checkLVal(specifier.local, contextDescription, BIND_LEXICAL);
			node.specifiers.push(this.finishNode(specifier, type));
			}

			maybeParseDefaultImportSpecifier(node) {
			node.importKind = "value";
			let kind = null;

			if (this.match(types._typeof)) {
			kind = "typeof";
			} else if (this.isContextual("type")) {
			kind = "type";
			}

			if (kind) {
			const lh = this.lookahead();

			if (kind === "type" && lh.type === types.star) {
			this.unexpected(lh.start);
			}

			if (isMaybeDefaultImport(lh) \|\| lh.type === types.braceL \|\| lh.type === types.star) {
			this.next();
			node.importKind = kind;
			}
			}

			return super.maybeParseDefaultImportSpecifier(node);
			}

			parseImportSpecifier(node) {
			const specifier = this.startNode();
			const firstIdentLoc = this.state.start;
			const firstIdent = this.parseModuleExportName();
			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("as") && !this.isLookaheadContextual("as")) {
			const as_ident = this.parseIdentifier(true);

			if (specifierTypeKind !== null && !this.match(types.name) && !this.state.type.keyword) {
			specifier.imported = as_ident;
			specifier.importKind = specifierTypeKind;
			specifier.local = as_ident.__clone();
			} else {
			specifier.imported = firstIdent;
			specifier.importKind = null;
			specifier.local = this.parseIdentifier();
			}
			} else if (specifierTypeKind !== null && (this.match(types.name) \|\| this.state.type.keyword)) {
			specifier.imported = this.parseIdentifier(true);
			specifier.importKind = specifierTypeKind;

			if (this.eatContextual("as")) {
			specifier.local = this.parseIdentifier();
			} else {
			isBinding = true;
			specifier.local = specifier.imported.__clone();
			}
			} else {
			if (firstIdent.type === "StringLiteral") {
			throw this.raise(specifier.start, ErrorMessages.ImportBindingIsString, firstIdent.value);
			}

			isBinding = true;
			specifier.imported = firstIdent;
			specifier.importKind = null;
			specifier.local = specifier.imported.__clone();
			}

			const nodeIsTypeImport = hasTypeImportKind(node);
			const specifierIsTypeImport = hasTypeImportKind(specifier);

			if (nodeIsTypeImport && specifierIsTypeImport) {
			this.raise(firstIdentLoc, FlowErrors.ImportTypeShorthandOnlyInPureImport);
			}

			if (nodeIsTypeImport \|\| specifierIsTypeImport) {
			this.checkReservedType(specifier.local.name, specifier.local.start, true);
			}

			if (isBinding && !nodeIsTypeImport && !specifierIsTypeImport) {
			this.checkReservedWord(specifier.local.name, specifier.start, true, true);
			}

			this.checkLVal(specifier.local, "import specifier", BIND_LEXICAL);
			node.specifiers.push(this.finishNode(specifier, "ImportSpecifier"));
			}

			parseFunctionParams(node, allowModifiers) {
			const kind = node.kind;

			if (kind !== "get" && kind !== "set" && this.isRelational("<")) {
			node.typeParameters = this.flowParseTypeParameterDeclaration();
			}

			super.parseFunctionParams(node, allowModifiers);
			}

			parseVarId(decl, kind) {
			super.parseVarId(decl, kind);

			if (this.match(types.colon)) {
			decl.id.typeAnnotation = this.flowParseTypeAnnotation();
			this.resetEndLocation(decl.id);
			}
			}

			parseAsyncArrowFromCallExpression(node, call) {
			if (this.match(types.colon)) {
			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(types.colon) \|\| super.shouldParseAsyncArrow();
			}

			parseMaybeAssign(refExpressionErrors, afterLeftParse, refNeedsArrowPos) {
			var _jsx;

			let state = null;
			let jsx;

			if (this.hasPlugin("jsx") && (this.match(types.jsxTagStart) \|\| this.isRelational("<"))) {
			state = this.state.clone();
			jsx = this.tryParse(() => super.parseMaybeAssign(refExpressionErrors, afterLeftParse, refNeedsArrowPos), state);
			if (!jsx.error) return jsx.node;
			const {
			context
			} = this.state;

			if (context[context.length - 1] === types$1.j_oTag) {
			context.length -= 2;
			} else if (context[context.length - 1] === types$1.j_expr) {
			context.length -= 1;
			}
			}

			if (((_jsx = jsx) == null ? void 0 : _jsx.error) \|\| this.isRelational("<")) {
			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, refNeedsArrowPos);
			this.resetStartLocationFromNode(result, typeParameters);
			return result;
			});

			if (arrowExpression.type !== "ArrowFunctionExpression" && ((_arrowExpression$extr = arrowExpression.extra) == null ? void 0 : _arrowExpression$extr.parenthesized)) {
			abort();
			}

			const expr = this.maybeUnwrapTypeCastExpression(arrowExpression);
			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(typeParameters.start, FlowErrors.UnexpectedTypeParameterBeforeAsyncArrowFunction);
			}

			return arrow.node;
			}

			arrowExpression = arrow.node;
			}

			if ((_jsx2 = jsx) == null ? void 0 : _jsx2.node) {
			this.state = jsx.failState;
			return jsx.node;
			}

			if (arrowExpression) {
			this.state = arrow.failState;
			return arrowExpression;
			}

			if ((_jsx3 = jsx) == null ? void 0 : _jsx3.thrown) throw jsx.error;
			if (arrow.thrown) throw arrow.error;
			throw this.raise(typeParameters.start, FlowErrors.UnexpectedTokenAfterTypeParameter);
			}

			return super.parseMaybeAssign(refExpressionErrors, afterLeftParse, refNeedsArrowPos);
			}

			parseArrow(node) {
			if (this.match(types.colon)) {
			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(types.arrow)) 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() {
			return this.match(types.colon) \|\| super.shouldParseArrow();
			}

			setArrowFunctionParameters(node, params) {
			if (this.state.noArrowParamsConversionAt.indexOf(node.start) !== -1) {
			node.params = params;
			} else {
			super.setArrowFunctionParameters(node, params);
			}
			}

			checkParams(node, allowDuplicates, isArrowFunction) {
			if (isArrowFunction && this.state.noArrowParamsConversionAt.indexOf(node.start) !== -1) {
			return;
			}

			return super.checkParams(...arguments);
			}

			parseParenAndDistinguishExpression(canBeArrow) {
			return super.parseParenAndDistinguishExpression(canBeArrow && this.state.noArrowAt.indexOf(this.state.start) === -1);
			}

			parseSubscripts(base, startPos, startLoc, noCalls) {
			if (base.type === "Identifier" && base.name === "async" && this.state.noArrowAt.indexOf(startPos) !== -1) {
			this.next();
			const node = this.startNodeAt(startPos, startLoc);
			node.callee = base;
			node.arguments = this.parseCallExpressionArguments(types.parenR, false);
			base = this.finishNode(node, "CallExpression");
			} else if (base.type === "Identifier" && base.name === "async" && this.isRelational("<")) {
			const state = this.state.clone();
			const arrow = this.tryParse(abort => this.parseAsyncArrowWithTypeParameters(startPos, startLoc) \|\| abort(), state);
			if (!arrow.error && !arrow.aborted) return arrow.node;
			const result = this.tryParse(() => super.parseSubscripts(base, startPos, startLoc, noCalls), state);
			if (result.node && !result.error) return result.node;

			if (arrow.node) {
			this.state = arrow.failState;
			return arrow.node;
			}

			if (result.node) {
			this.state = result.failState;
			return result.node;
			}

			throw arrow.error \|\| result.error;
			}

			return super.parseSubscripts(base, startPos, startLoc, noCalls);
			}

			parseSubscript(base, startPos, startLoc, noCalls, subscriptState) {
			if (this.match(types.questionDot) && this.isLookaheadToken_lt()) {
			subscriptState.optionalChainMember = true;

			if (noCalls) {
			subscriptState.stop = true;
			return base;
			}

			this.next();
			const node = this.startNodeAt(startPos, startLoc);
			node.callee = base;
			node.typeArguments = this.flowParseTypeParameterInstantiation();
			this.expect(types.parenL);
			node.arguments = this.parseCallExpressionArguments(types.parenR, false);
			node.optional = true;
			return this.finishCallExpression(node, true);
			} else if (!noCalls && this.shouldParseTypes() && this.isRelational("<")) {
			const node = this.startNodeAt(startPos, startLoc);
			node.callee = base;
			const result = this.tryParse(() => {
			node.typeArguments = this.flowParseTypeParameterInstantiationCallOrNew();
			this.expect(types.parenL);
			node.arguments = this.parseCallExpressionArguments(types.parenR, false);
			if (subscriptState.optionalChainMember) node.optional = false;
			return this.finishCallExpression(node, subscriptState.optionalChainMember);
			});

			if (result.node) {
			if (result.error) this.state = result.failState;
			return result.node;
			}
			}

			return super.parseSubscript(base, startPos, startLoc, noCalls, subscriptState);
			}

			parseNewArguments(node) {
			let targs = null;

			if (this.shouldParseTypes() && this.isRelational("<")) {
			targs = this.tryParse(() => this.flowParseTypeParameterInstantiationCallOrNew()).node;
			}

			node.typeArguments = targs;
			super.parseNewArguments(node);
			}

			parseAsyncArrowWithTypeParameters(startPos, startLoc) {
			const node = this.startNodeAt(startPos, startLoc);
			this.parseFunctionParams(node);
			if (!this.parseArrow(node)) return;
			return this.parseArrowExpression(node, undefined, true);
			}

			readToken_mult_modulo(code) {
			const next = this.input.charCodeAt(this.state.pos + 1);

			if (code === 42 && next === 47 && this.state.hasFlowComment) {
			this.state.hasFlowComment = false;
			this.state.pos += 2;
			this.nextToken();
			return;
			}

			super.readToken_mult_modulo(code);
			}

			readToken_pipe_amp(code) {
			const next = this.input.charCodeAt(this.state.pos + 1);

			if (code === 124 && next === 125) {
			this.finishOp(types.braceBarR, 2);
			return;
			}

			super.readToken_pipe_amp(code);
			}

			parseTopLevel(file, program) {
			const fileNode = super.parseTopLevel(file, program);

			if (this.state.hasFlowComment) {
			this.raise(this.state.pos, FlowErrors.UnterminatedFlowComment);
			}

			return fileNode;
			}

			skipBlockComment() {
			if (this.hasPlugin("flowComments") && this.skipFlowComment()) {
			if (this.state.hasFlowComment) {
			this.unexpected(null, FlowErrors.NestedFlowComment);
			}

			this.hasFlowCommentCompletion();
			this.state.pos += this.skipFlowComment();
			this.state.hasFlowComment = true;
			return;
			}

			if (this.state.hasFlowComment) {
			const end = this.input.indexOf("*-/", this.state.pos += 2);

			if (end === -1) {
			throw this.raise(this.state.pos - 2, ErrorMessages.UnterminatedComment);
			}

			this.state.pos = end + 3;
			return;
			}

			super.skipBlockComment();
			}

			skipFlowComment() {
			const {
			pos
			} = this.state;
			let shiftToFirstNonWhiteSpace = 2;

			while ([32, 9].includes(this.input.charCodeAt(pos + shiftToFirstNonWhiteSpace))) {
			shiftToFirstNonWhiteSpace++;
			}

			const ch2 = this.input.charCodeAt(shiftToFirstNonWhiteSpace + pos);
			const ch3 = this.input.charCodeAt(shiftToFirstNonWhiteSpace + pos + 1);

			if (ch2 === 58 && ch3 === 58) {
			return shiftToFirstNonWhiteSpace + 2;
			}

			if (this.input.slice(shiftToFirstNonWhiteSpace + pos, shiftToFirstNonWhiteSpace + pos + 12) === "flow-include") {
			return shiftToFirstNonWhiteSpace + 12;
			}

			if (ch2 === 58 && ch3 !== 58) {
			return shiftToFirstNonWhiteSpace;
			}

			return false;
			}

			hasFlowCommentCompletion() {
			const end = this.input.indexOf("*/", this.state.pos);

			if (end === -1) {
			throw this.raise(this.state.pos, ErrorMessages.UnterminatedComment);
			}
			}

			flowEnumErrorBooleanMemberNotInitialized(pos, {
			enumName,
			memberName
			}) {
			this.raise(pos, FlowErrors.EnumBooleanMemberNotInitialized, memberName, enumName);
			}

			flowEnumErrorInvalidMemberName(pos, {
			enumName,
			memberName
			}) {
			const suggestion = memberName[0].toUpperCase() + memberName.slice(1);
			this.raise(pos, FlowErrors.EnumInvalidMemberName, memberName, suggestion, enumName);
			}

			flowEnumErrorDuplicateMemberName(pos, {
			enumName,
			memberName
			}) {
			this.raise(pos, FlowErrors.EnumDuplicateMemberName, memberName, enumName);
			}

			flowEnumErrorInconsistentMemberValues(pos, {
			enumName
			}) {
			this.raise(pos, FlowErrors.EnumInconsistentMemberValues, enumName);
			}

			flowEnumErrorInvalidExplicitType(pos, {
			enumName,
			suppliedType
			}) {
			return this.raise(pos, suppliedType === null ? FlowErrors.EnumInvalidExplicitTypeUnknownSupplied : FlowErrors.EnumInvalidExplicitType, enumName, suppliedType);
			}

			flowEnumErrorInvalidMemberInitializer(pos, {
			enumName,
			explicitType,
			memberName
			}) {
			let message = null;

			switch (explicitType) {
			case "boolean":
			case "number":
			case "string":
			message = FlowErrors.EnumInvalidMemberInitializerPrimaryType;
			break;

			case "symbol":
			message = FlowErrors.EnumInvalidMemberInitializerSymbolType;
			break;

			default:
			message = FlowErrors.EnumInvalidMemberInitializerUnknownType;
			}

			return this.raise(pos, message, enumName, memberName, explicitType);
			}

			flowEnumErrorNumberMemberNotInitialized(pos, {
			enumName,
			memberName
			}) {
			this.raise(pos, FlowErrors.EnumNumberMemberNotInitialized, enumName, memberName);
			}

			flowEnumErrorStringMemberInconsistentlyInitailized(pos, {
			enumName
			}) {
			this.raise(pos, FlowErrors.EnumStringMemberInconsistentlyInitailized, enumName);
			}

			flowEnumMemberInit() {
			const startPos = this.state.start;

			const endOfInit = () => this.match(types.comma) \|\| this.match(types.braceR);

			switch (this.state.type) {
			case types.num:
			{
			const literal = this.parseLiteral(this.state.value, "NumericLiteral");

			if (endOfInit()) {
			return {
			type: "number",
			pos: literal.start,
			value: literal
			};
			}

			return {
			type: "invalid",
			pos: startPos
			};
			}

			case types.string:
			{
			const literal = this.parseLiteral(this.state.value, "StringLiteral");

			if (endOfInit()) {
			return {
			type: "string",
			pos: literal.start,
			value: literal
			};
			}

			return {
			type: "invalid",
			pos: startPos
			};
			}

			case types._true:
			case types._false:
			{
			const literal = this.parseBooleanLiteral();

			if (endOfInit()) {
			return {
			type: "boolean",
			pos: literal.start,
			value: literal
			};
			}

			return {
			type: "invalid",
			pos: startPos
			};
			}

			default:
			return {
			type: "invalid",
			pos: startPos
			};
			}
			}

			flowEnumMemberRaw() {
			const pos = this.state.start;
			const id = this.parseIdentifier(true);
			const init = this.eat(types.eq) ? this.flowEnumMemberInit() : {
			type: "none",
			pos
			};
			return {
			id,
			init
			};
			}

			flowEnumCheckExplicitTypeMismatch(pos, context, expectedType) {
			const {
			explicitType
			} = context;

			if (explicitType === null) {
			return;
			}

			if (explicitType !== expectedType) {
			this.flowEnumErrorInvalidMemberInitializer(pos, context);
			}
			}

			flowEnumMembers({
			enumName,
			explicitType
			}) {
			const seenNames = new Set();
			const members = {
			booleanMembers: [],
			numberMembers: [],
			stringMembers: [],
			defaultedMembers: []
			};

			while (!this.match(types.braceR)) {
			const memberNode = this.startNode();
			const {
			id,
			init
			} = this.flowEnumMemberRaw();
			const memberName = id.name;

			if (memberName === "") {
			continue;
			}

			if (/^[a-z]/.test(memberName)) {
			this.flowEnumErrorInvalidMemberName(id.start, {
			enumName,
			memberName
			});
			}

			if (seenNames.has(memberName)) {
			this.flowEnumErrorDuplicateMemberName(id.start, {
			enumName,
			memberName
			});
			}

			seenNames.add(memberName);
			const context = {
			enumName,
			explicitType,
			memberName
			};
			memberNode.id = id;

			switch (init.type) {
			case "boolean":
			{
			this.flowEnumCheckExplicitTypeMismatch(init.pos, context, "boolean");
			memberNode.init = init.value;
			members.booleanMembers.push(this.finishNode(memberNode, "EnumBooleanMember"));
			break;
			}

			case "number":
			{
			this.flowEnumCheckExplicitTypeMismatch(init.pos, context, "number");
			memberNode.init = init.value;
			members.numberMembers.push(this.finishNode(memberNode, "EnumNumberMember"));
			break;
			}

			case "string":
			{
			this.flowEnumCheckExplicitTypeMismatch(init.pos, context, "string");
			memberNode.init = init.value;
			members.stringMembers.push(this.finishNode(memberNode, "EnumStringMember"));
			break;
			}

			case "invalid":
			{
			throw this.flowEnumErrorInvalidMemberInitializer(init.pos, context);
			}

			case "none":
			{
			switch (explicitType) {
			case "boolean":
			this.flowEnumErrorBooleanMemberNotInitialized(init.pos, context);
			break;

			case "number":
			this.flowEnumErrorNumberMemberNotInitialized(init.pos, context);
			break;

			default:
			members.defaultedMembers.push(this.finishNode(memberNode, "EnumDefaultedMember"));
			}
			}
			}

			if (!this.match(types.braceR)) {
			this.expect(types.comma);
			}
			}

			return members;
			}

			flowEnumStringMembers(initializedMembers, defaultedMembers, {
			enumName
			}) {
			if (initializedMembers.length === 0) {
			return defaultedMembers;
			} else if (defaultedMembers.length === 0) {
			return initializedMembers;
			} else if (defaultedMembers.length > initializedMembers.length) {
			for (let _i = 0; _i < initializedMembers.length; _i++) {
			const member = initializedMembers[_i];
			this.flowEnumErrorStringMemberInconsistentlyInitailized(member.start, {
			enumName
			});
			}

			return defaultedMembers;
			} else {
			for (let _i2 = 0; _i2 < defaultedMembers.length; _i2++) {
			const member = defaultedMembers[_i2];
			this.flowEnumErrorStringMemberInconsistentlyInitailized(member.start, {
			enumName
			});
			}

			return initializedMembers;
			}
			}

			flowEnumParseExplicitType({
			enumName
			}) {
			if (this.eatContextual("of")) {
			if (!this.match(types.name)) {
			throw this.flowEnumErrorInvalidExplicitType(this.state.start, {
			enumName,
			suppliedType: null
			});
			}

			const {
			value
			} = this.state;
			this.next();

			if (value !== "boolean" && value !== "number" && value !== "string" && value !== "symbol") {
			this.flowEnumErrorInvalidExplicitType(this.state.start, {
			enumName,
			suppliedType: value
			});
			}

			return value;
			}

			return null;
			}

			flowEnumBody(node, {
			enumName,
			nameLoc
			}) {
			const explicitType = this.flowEnumParseExplicitType({
			enumName
			});
			this.expect(types.braceL);
			const members = this.flowEnumMembers({
			enumName,
			explicitType
			});

			switch (explicitType) {
			case "boolean":
			node.explicitType = true;
			node.members = members.booleanMembers;
			this.expect(types.braceR);
			return this.finishNode(node, "EnumBooleanBody");

			case "number":
			node.explicitType = true;
			node.members = members.numberMembers;
			this.expect(types.braceR);
			return this.finishNode(node, "EnumNumberBody");

			case "string":
			node.explicitType = true;
			node.members = this.flowEnumStringMembers(members.stringMembers, members.defaultedMembers, {
			enumName
			});
			this.expect(types.braceR);
			return this.finishNode(node, "EnumStringBody");

			case "symbol":
			node.members = members.defaultedMembers;
			this.expect(types.braceR);
			return this.finishNode(node, "EnumSymbolBody");

			default:
			{
			const empty = () => {
			node.members = [];
			this.expect(types.braceR);
			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(types.braceR);
			return this.finishNode(node, "EnumStringBody");
			} else if (!numsLen && !strsLen && boolsLen >= defaultedLen) {
			for (let _i3 = 0, _members$defaultedMem = members.defaultedMembers; _i3 < _members$defaultedMem.length; _i3++) {
			const member = _members$defaultedMem[_i3];
			this.flowEnumErrorBooleanMemberNotInitialized(member.start, {
			enumName,
			memberName: member.id.name
			});
			}

			node.members = members.booleanMembers;
			this.expect(types.braceR);
			return this.finishNode(node, "EnumBooleanBody");
			} else if (!boolsLen && !strsLen && numsLen >= defaultedLen) {
			for (let _i4 = 0, _members$defaultedMem2 = members.defaultedMembers; _i4 < _members$defaultedMem2.length; _i4++) {
			const member = _members$defaultedMem2[_i4];
			this.flowEnumErrorNumberMemberNotInitialized(member.start, {
			enumName,
			memberName: member.id.name
			});
			}

			node.members = members.numberMembers;
			this.expect(types.braceR);
			return this.finishNode(node, "EnumNumberBody");
			} else {
			this.flowEnumErrorInconsistentMemberValues(nameLoc, {
			enumName
			});
			return empty();
			}
			}
			}
			}

			flowParseEnumDeclaration(node) {
			const id = this.parseIdentifier();
			node.id = id;
			node.body = this.flowEnumBody(this.startNode(), {
			enumName: id.name,
			nameLoc: id.start
			});
			return this.finishNode(node, "EnumDeclaration");
			}

			updateContext(prevType) {
			if (this.match(types.name) && this.state.value === "of" && prevType === types.name && this.input.slice(this.state.lastTokStart, this.state.lastTokEnd) === "interface") {
			this.state.exprAllowed = false;
			} else {
			super.updateContext(prevType);
			}
			}

			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;
			}

			}, _temp;
			});

			const entities = {
			quot: "\u0022",
			amp: "&",
			apos: "\u0027",
			lt: "<",
			gt: ">",
			nbsp: "\u00A0",
			iexcl: "\u00A1",
			cent: "\u00A2",
			pound: "\u00A3",
			curren: "\u00A4",
			yen: "\u00A5",
			brvbar: "\u00A6",
			sect: "\u00A7",
			uml: "\u00A8",
			copy: "\u00A9",
			ordf: "\u00AA",
			laquo: "\u00AB",
			not: "\u00AC",
			shy: "\u00AD",
			reg: "\u00AE",
			macr: "\u00AF",
			deg: "\u00B0",
			plusmn: "\u00B1",
			sup2: "\u00B2",
			sup3: "\u00B3",
			acute: "\u00B4",
			micro: "\u00B5",
			para: "\u00B6",
			middot: "\u00B7",
			cedil: "\u00B8",
			sup1: "\u00B9",
			ordm: "\u00BA",
			raquo: "\u00BB",
			frac14: "\u00BC",
			frac12: "\u00BD",
			frac34: "\u00BE",
			iquest: "\u00BF",
			Agrave: "\u00C0",
			Aacute: "\u00C1",
			Acirc: "\u00C2",
			Atilde: "\u00C3",
			Auml: "\u00C4",
			Aring: "\u00C5",
			AElig: "\u00C6",
			Ccedil: "\u00C7",
			Egrave: "\u00C8",
			Eacute: "\u00C9",
			Ecirc: "\u00CA",
			Euml: "\u00CB",
			Igrave: "\u00CC",
			Iacute: "\u00CD",
			Icirc: "\u00CE",
			Iuml: "\u00CF",
			ETH: "\u00D0",
			Ntilde: "\u00D1",
			Ograve: "\u00D2",
			Oacute: "\u00D3",
			Ocirc: "\u00D4",
			Otilde: "\u00D5",
			Ouml: "\u00D6",
			times: "\u00D7",
			Oslash: "\u00D8",
			Ugrave: "\u00D9",
			Uacute: "\u00DA",
			Ucirc: "\u00DB",
			Uuml: "\u00DC",
			Yacute: "\u00DD",
			THORN: "\u00DE",
			szlig: "\u00DF",
			agrave: "\u00E0",
			aacute: "\u00E1",
			acirc: "\u00E2",
			atilde: "\u00E3",
			auml: "\u00E4",
			aring: "\u00E5",
			aelig: "\u00E6",
			ccedil: "\u00E7",
			egrave: "\u00E8",
			eacute: "\u00E9",
			ecirc: "\u00EA",
			euml: "\u00EB",
			igrave: "\u00EC",
			iacute: "\u00ED",
			icirc: "\u00EE",
			iuml: "\u00EF",
			eth: "\u00F0",
			ntilde: "\u00F1",
			ograve: "\u00F2",
			oacute: "\u00F3",
			ocirc: "\u00F4",
			otilde: "\u00F5",
			ouml: "\u00F6",
			divide: "\u00F7",
			oslash: "\u00F8",
			ugrave: "\u00F9",
			uacute: "\u00FA",
			ucirc: "\u00FB",
			uuml: "\u00FC",
			yacute: "\u00FD",
			thorn: "\u00FE",
			yuml: "\u00FF",
			OElig: "\u0152",
			oelig: "\u0153",
			Scaron: "\u0160",
			scaron: "\u0161",
			Yuml: "\u0178",
			fnof: "\u0192",
			circ: "\u02C6",
			tilde: "\u02DC",
			Alpha: "\u0391",
			Beta: "\u0392",
			Gamma: "\u0393",
			Delta: "\u0394",
			Epsilon: "\u0395",
			Zeta: "\u0396",
			Eta: "\u0397",
			Theta: "\u0398",
			Iota: "\u0399",
			Kappa: "\u039A",
			Lambda: "\u039B",
			Mu: "\u039C",
			Nu: "\u039D",
			Xi: "\u039E",
			Omicron: "\u039F",
			Pi: "\u03A0",
			Rho: "\u03A1",
			Sigma: "\u03A3",
			Tau: "\u03A4",
			Upsilon: "\u03A5",
			Phi: "\u03A6",
			Chi: "\u03A7",
			Psi: "\u03A8",
			Omega: "\u03A9",
			alpha: "\u03B1",
			beta: "\u03B2",
			gamma: "\u03B3",
			delta: "\u03B4",
			epsilon: "\u03B5",
			zeta: "\u03B6",
			eta: "\u03B7",
			theta: "\u03B8",
			iota: "\u03B9",
			kappa: "\u03BA",
			lambda: "\u03BB",
			mu: "\u03BC",
			nu: "\u03BD",
			xi: "\u03BE",
			omicron: "\u03BF",
			pi: "\u03C0",
			rho: "\u03C1",
			sigmaf: "\u03C2",
			sigma: "\u03C3",
			tau: "\u03C4",
			upsilon: "\u03C5",
			phi: "\u03C6",
			chi: "\u03C7",
			psi: "\u03C8",
			omega: "\u03C9",
			thetasym: "\u03D1",
			upsih: "\u03D2",
			piv: "\u03D6",
			ensp: "\u2002",
			emsp: "\u2003",
			thinsp: "\u2009",
			zwnj: "\u200C",
			zwj: "\u200D",
			lrm: "\u200E",
			rlm: "\u200F",
			ndash: "\u2013",
			mdash: "\u2014",
			lsquo: "\u2018",
			rsquo: "\u2019",
			sbquo: "\u201A",
			ldquo: "\u201C",
			rdquo: "\u201D",
			bdquo: "\u201E",
			dagger: "\u2020",
			Dagger: "\u2021",
			bull: "\u2022",
			hellip: "\u2026",
			permil: "\u2030",
			prime: "\u2032",
			Prime: "\u2033",
			lsaquo: "\u2039",
			rsaquo: "\u203A",
			oline: "\u203E",
			frasl: "\u2044",
			euro: "\u20AC",
			image: "\u2111",
			weierp: "\u2118",
			real: "\u211C",
			trade: "\u2122",
			alefsym: "\u2135",
			larr: "\u2190",
			uarr: "\u2191",
			rarr: "\u2192",
			darr: "\u2193",
			harr: "\u2194",
			crarr: "\u21B5",
			lArr: "\u21D0",
			uArr: "\u21D1",
			rArr: "\u21D2",
			dArr: "\u21D3",
			hArr: "\u21D4",
			forall: "\u2200",
			part: "\u2202",
			exist: "\u2203",
			empty: "\u2205",
			nabla: "\u2207",
			isin: "\u2208",
			notin: "\u2209",
			ni: "\u220B",
			prod: "\u220F",
			sum: "\u2211",
			minus: "\u2212",
			lowast: "\u2217",
			radic: "\u221A",
			prop: "\u221D",
			infin: "\u221E",
			ang: "\u2220",
			and: "\u2227",
			or: "\u2228",
			cap: "\u2229",
			cup: "\u222A",
			int: "\u222B",
			there4: "\u2234",
			sim: "\u223C",
			cong: "\u2245",
			asymp: "\u2248",
			ne: "\u2260",
			equiv: "\u2261",
			le: "\u2264",
			ge: "\u2265",
			sub: "\u2282",
			sup: "\u2283",
			nsub: "\u2284",
			sube: "\u2286",
			supe: "\u2287",
			oplus: "\u2295",
			otimes: "\u2297",
			perp: "\u22A5",
			sdot: "\u22C5",
			lceil: "\u2308",
			rceil: "\u2309",
			lfloor: "\u230A",
			rfloor: "\u230B",
			lang: "\u2329",
			rang: "\u232A",
			loz: "\u25CA",
			spades: "\u2660",
			clubs: "\u2663",
			hearts: "\u2665",
			diams: "\u2666"
			};

			const HEX_NUMBER = /^[\da-fA-F]+$/;
			const DECIMAL_NUMBER = /^\d+$/;
			const JsxErrors = Object.freeze({
			AttributeIsEmpty: "JSX attributes must only be assigned a non-empty expression",
			MissingClosingTagFragment: "Expected corresponding JSX closing tag for <>",
			MissingClosingTagElement: "Expected corresponding JSX closing tag for <%0>",
			UnexpectedSequenceExpression: "Sequence expressions cannot be directly nested inside JSX. Did you mean to wrap it in parentheses (...)?",
			UnsupportedJsxValue: "JSX value should be either an expression or a quoted JSX text",
			UnterminatedJsxContent: "Unterminated JSX contents",
			UnwrappedAdjacentJSXElements: "Adjacent JSX elements must be wrapped in an enclosing tag. Did you want a JSX fragment <>...</>?"
			});
			types$1.j_oTag = new TokContext("<tag", false);
			types$1.j_cTag = new TokContext("</tag", false);
			types$1.j_expr = new TokContext("<tag>...</tag>", true, true);
			types.jsxName = new TokenType("jsxName");
			types.jsxText = new TokenType("jsxText", {
			beforeExpr: true
			});
			types.jsxTagStart = new TokenType("jsxTagStart", {
			startsExpr: true
			});
			types.jsxTagEnd = new TokenType("jsxTagEnd");

			types.jsxTagStart.updateContext = function () {
			this.state.context.push(types$1.j_expr);
			this.state.context.push(types$1.j_oTag);
			this.state.exprAllowed = false;
			};

			types.jsxTagEnd.updateContext = function (prevType) {
			const out = this.state.context.pop();

			if (out === types$1.j_oTag && prevType === types.slash \|\| out === types$1.j_cTag) {
			this.state.context.pop();
			this.state.exprAllowed = this.curContext() === types$1.j_expr;
			} else {
			this.state.exprAllowed = true;
			}
			};

			function isFragment(object) {
			return object ? object.type === "JSXOpeningFragment" \|\| object.type === "JSXClosingFragment" : false;
			}

			function getQualifiedJSXName(object) {
			if (object.type === "JSXIdentifier") {
			return object.name;
			}

			if (object.type === "JSXNamespacedName") {
			return object.namespace.name + ":" + object.name.name;
			}

			if (object.type === "JSXMemberExpression") {
			return getQualifiedJSXName(object.object) + "." + getQualifiedJSXName(object.property);
			}

			throw new Error("Node had unexpected type: " + object.type);
			}

			var jsx = (superClass => class extends superClass {
			jsxReadToken() {
			let out = "";
			let chunkStart = this.state.pos;

			for (;;) {
			if (this.state.pos >= this.length) {
			throw this.raise(this.state.start, JsxErrors.UnterminatedJsxContent);
			}

			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.exprAllowed) {
			++this.state.pos;
			return this.finishToken(types.jsxTagStart);
			}

			return super.getTokenFromCode(ch);
			}

			out += this.input.slice(chunkStart, this.state.pos);
			return this.finishToken(types.jsxText, out);

			case 38:
			out += this.input.slice(chunkStart, this.state.pos);
			out += this.jsxReadEntity();
			chunkStart = this.state.pos;
			break;

			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(this.state.start, ErrorMessages.UnterminatedString);
			}

			const ch = this.input.charCodeAt(this.state.pos);
			if (ch === quote) break;

			if (ch === 38) {
			out += this.input.slice(chunkStart, this.state.pos);
			out += this.jsxReadEntity();
			chunkStart = this.state.pos;
			} else if (isNewLine(ch)) {
			out += this.input.slice(chunkStart, this.state.pos);
			out += this.jsxReadNewLine(false);
			chunkStart = this.state.pos;
			} else {
			++this.state.pos;
			}
			}

			out += this.input.slice(chunkStart, this.state.pos++);
			return this.finishToken(types.string, out);
			}

			jsxReadEntity() {
			let str = "";
			let count = 0;
			let entity;
			let ch = this.input[this.state.pos];
			const startPos = ++this.state.pos;

			while (this.state.pos < this.length && count++ < 10) {
			ch = this.input[this.state.pos++];

			if (ch === ";") {
			if (str[0] === "#") {
			if (str[1] === "x") {
			str = str.substr(2);

			if (HEX_NUMBER.test(str)) {
			entity = String.fromCodePoint(parseInt(str, 16));
			}
			} else {
			str = str.substr(1);

			if (DECIMAL_NUMBER.test(str)) {
			entity = String.fromCodePoint(parseInt(str, 10));
			}
			}
			} else {
			entity = entities[str];
			}

			break;
			}

			str += ch;
			}

			if (!entity) {
			this.state.pos = startPos;
			return "&";
			}

			return entity;
			}

			jsxReadWord() {
			let ch;
			const start = this.state.pos;

			do {
			ch = this.input.charCodeAt(++this.state.pos);
			} while (isIdentifierChar(ch) \|\| ch === 45);

			return this.finishToken(types.jsxName, this.input.slice(start, this.state.pos));
			}

			jsxParseIdentifier() {
			const node = this.startNode();

			if (this.match(types.jsxName)) {
			node.name = this.state.value;
			} else if (this.state.type.keyword) {
			node.name = this.state.type.keyword;
			} else {
			this.unexpected();
			}

			this.next();
			return this.finishNode(node, "JSXIdentifier");
			}

			jsxParseNamespacedName() {
			const startPos = this.state.start;
			const startLoc = this.state.startLoc;
			const name = this.jsxParseIdentifier();
			if (!this.eat(types.colon)) return name;
			const node = this.startNodeAt(startPos, startLoc);
			node.namespace = name;
			node.name = this.jsxParseIdentifier();
			return this.finishNode(node, "JSXNamespacedName");
			}

			jsxParseElementName() {
			const startPos = this.state.start;
			const startLoc = this.state.startLoc;
			let node = this.jsxParseNamespacedName();

			if (node.type === "JSXNamespacedName") {
			return node;
			}

			while (this.eat(types.dot)) {
			const newNode = this.startNodeAt(startPos, startLoc);
			newNode.object = node;
			newNode.property = this.jsxParseIdentifier();
			node = this.finishNode(newNode, "JSXMemberExpression");
			}

			return node;
			}

			jsxParseAttributeValue() {
			let node;

			switch (this.state.type) {
			case types.braceL:
			node = this.startNode();
			this.next();
			node = this.jsxParseExpressionContainer(node);

			if (node.expression.type === "JSXEmptyExpression") {
			this.raise(node.start, JsxErrors.AttributeIsEmpty);
			}

			return node;

			case types.jsxTagStart:
			case types.string:
			return this.parseExprAtom();

			default:
			throw this.raise(this.state.start, JsxErrors.UnsupportedJsxValue);
			}
			}

			jsxParseEmptyExpression() {
			const node = this.startNodeAt(this.state.lastTokEnd, this.state.lastTokEndLoc);
			return this.finishNodeAt(node, "JSXEmptyExpression", this.state.start, this.state.startLoc);
			}

			jsxParseSpreadChild(node) {
			this.next();
			node.expression = this.parseExpression();
			this.expect(types.braceR);
			return this.finishNode(node, "JSXSpreadChild");
			}

			jsxParseExpressionContainer(node) {
			if (this.match(types.braceR)) {
			node.expression = this.jsxParseEmptyExpression();
			} else {
			const expression = this.parseExpression();
			node.expression = expression;
			}

			this.expect(types.braceR);
			return this.finishNode(node, "JSXExpressionContainer");
			}

			jsxParseAttribute() {
			const node = this.startNode();

			if (this.eat(types.braceL)) {
			this.expect(types.ellipsis);
			node.argument = this.parseMaybeAssignAllowIn();
			this.expect(types.braceR);
			return this.finishNode(node, "JSXSpreadAttribute");
			}

			node.name = this.jsxParseNamespacedName();
			node.value = this.eat(types.eq) ? this.jsxParseAttributeValue() : null;
			return this.finishNode(node, "JSXAttribute");
			}

			jsxParseOpeningElementAt(startPos, startLoc) {
			const node = this.startNodeAt(startPos, startLoc);

			if (this.match(types.jsxTagEnd)) {
			this.expect(types.jsxTagEnd);
			return this.finishNode(node, "JSXOpeningFragment");
			}

			node.name = this.jsxParseElementName();
			return this.jsxParseOpeningElementAfterName(node);
			}

			jsxParseOpeningElementAfterName(node) {
			const attributes = [];

			while (!this.match(types.slash) && !this.match(types.jsxTagEnd)) {
			attributes.push(this.jsxParseAttribute());
			}

			node.attributes = attributes;
			node.selfClosing = this.eat(types.slash);
			this.expect(types.jsxTagEnd);
			return this.finishNode(node, "JSXOpeningElement");
			}

			jsxParseClosingElementAt(startPos, startLoc) {
			const node = this.startNodeAt(startPos, startLoc);

			if (this.match(types.jsxTagEnd)) {
			this.expect(types.jsxTagEnd);
			return this.finishNode(node, "JSXClosingFragment");
			}

			node.name = this.jsxParseElementName();
			this.expect(types.jsxTagEnd);
			return this.finishNode(node, "JSXClosingElement");
			}

			jsxParseElementAt(startPos, startLoc) {
			const node = this.startNodeAt(startPos, startLoc);
			const children = [];
			const openingElement = this.jsxParseOpeningElementAt(startPos, startLoc);
			let closingElement = null;

			if (!openingElement.selfClosing) {
			contents: for (;;) {
			switch (this.state.type) {
			case types.jsxTagStart:
			startPos = this.state.start;
			startLoc = this.state.startLoc;
			this.next();

			if (this.eat(types.slash)) {
			closingElement = this.jsxParseClosingElementAt(startPos, startLoc);
			break contents;
			}

			children.push(this.jsxParseElementAt(startPos, startLoc));
			break;

			case types.jsxText:
			children.push(this.parseExprAtom());
			break;

			case types.braceL:
			{
			const node = this.startNode();
			this.next();

			if (this.match(types.ellipsis)) {
			children.push(this.jsxParseSpreadChild(node));
			} else {
			children.push(this.jsxParseExpressionContainer(node));
			}

			break;
			}

			default:
			throw this.unexpected();
			}
			}

			if (isFragment(openingElement) && !isFragment(closingElement)) {
			this.raise(closingElement.start, JsxErrors.MissingClosingTagFragment);
			} else if (!isFragment(openingElement) && isFragment(closingElement)) {
			this.raise(closingElement.start, JsxErrors.MissingClosingTagElement, getQualifiedJSXName(openingElement.name));
			} else if (!isFragment(openingElement) && !isFragment(closingElement)) {
			if (getQualifiedJSXName(closingElement.name) !== getQualifiedJSXName(openingElement.name)) {
			this.raise(closingElement.start, JsxErrors.MissingClosingTagElement, getQualifiedJSXName(openingElement.name));
			}
			}
			}

			if (isFragment(openingElement)) {
			node.openingFragment = openingElement;
			node.closingFragment = closingElement;
			} else {
			node.openingElement = openingElement;
			node.closingElement = closingElement;
			}

			node.children = children;

			if (this.isRelational("<")) {
			throw this.raise(this.state.start, JsxErrors.UnwrappedAdjacentJSXElements);
			}

			return isFragment(openingElement) ? this.finishNode(node, "JSXFragment") : this.finishNode(node, "JSXElement");
			}

			jsxParseElement() {
			const startPos = this.state.start;
			const startLoc = this.state.startLoc;
			this.next();
			return this.jsxParseElementAt(startPos, startLoc);
			}

			parseExprAtom(refExpressionErrors) {
			if (this.match(types.jsxText)) {
			return this.parseLiteral(this.state.value, "JSXText");
			} else if (this.match(types.jsxTagStart)) {
			return this.jsxParseElement();
			} else if (this.isRelational("<") && this.input.charCodeAt(this.state.pos) !== 33) {
			this.finishToken(types.jsxTagStart);
			return this.jsxParseElement();
			} else {
			return super.parseExprAtom(refExpressionErrors);
			}
			}

			getTokenFromCode(code) {
			if (this.state.inPropertyName) return super.getTokenFromCode(code);
			const context = this.curContext();

			if (context === types$1.j_expr) {
			return this.jsxReadToken();
			}

			if (context === types$1.j_oTag \|\| context === types$1.j_cTag) {
			if (isIdentifierStart(code)) {
			return this.jsxReadWord();
			}

			if (code === 62) {
			++this.state.pos;
			return this.finishToken(types.jsxTagEnd);
			}

			if ((code === 34 \|\| code === 39) && context === types$1.j_oTag) {
			return this.jsxReadString(code);
			}
			}

			if (code === 60 && this.state.exprAllowed && this.input.charCodeAt(this.state.pos + 1) !== 33) {
			++this.state.pos;
			return this.finishToken(types.jsxTagStart);
			}

			return super.getTokenFromCode(code);
			}

			updateContext(prevType) {
			if (this.match(types.braceL)) {
			const curContext = this.curContext();

			if (curContext === types$1.j_oTag) {
			this.state.context.push(types$1.braceExpression);
			} else if (curContext === types$1.j_expr) {
			this.state.context.push(types$1.templateQuasi);
			} else {
			super.updateContext(prevType);
			}

			this.state.exprAllowed = true;
			} else if (this.match(types.slash) && prevType === types.jsxTagStart) {
			this.state.context.length -= 2;
			this.state.context.push(types$1.j_cTag);
			this.state.exprAllowed = false;
			} else {
			return super.updateContext(prevType);
			}
			}

			});

			class Scope {
			constructor(flags) {
			this.flags = void 0;
			this.var = [];
			this.lexical = [];
			this.functions = [];
			this.flags = flags;
			}

			}
			class ScopeHandler {
			constructor(raise, inModule) {
			this.scopeStack = [];
			this.undefinedExports = new Map();
			this.undefinedPrivateNames = new Map();
			this.raise = raise;
			this.inModule = inModule;
			}

			get inFunction() {
			return (this.currentVarScope().flags & SCOPE_FUNCTION) > 0;
			}

			get allowSuper() {
			return (this.currentThisScope().flags & SCOPE_SUPER) > 0;
			}

			get allowDirectSuper() {
			return (this.currentThisScope().flags & SCOPE_DIRECT_SUPER) > 0;
			}

			get inClass() {
			return (this.currentThisScope().flags & SCOPE_CLASS) > 0;
			}

			get inNonArrowFunction() {
			return (this.currentThisScope().flags & SCOPE_FUNCTION) > 0;
			}

			get treatFunctionsAsVar() {
			return this.treatFunctionsAsVarInScope(this.currentScope());
			}

			createScope(flags) {
			return new Scope(flags);
			}

			enter(flags) {
			this.scopeStack.push(this.createScope(flags));
			}

			exit() {
			this.scopeStack.pop();
			}

			treatFunctionsAsVarInScope(scope) {
			return !!(scope.flags & SCOPE_FUNCTION \|\| !this.inModule && scope.flags & SCOPE_PROGRAM);
			}

			declareName(name, bindingType, pos) {
			let scope = this.currentScope();

			if (bindingType & BIND_SCOPE_LEXICAL \|\| bindingType & BIND_SCOPE_FUNCTION) {
			this.checkRedeclarationInScope(scope, name, bindingType, pos);

			if (bindingType & BIND_SCOPE_FUNCTION) {
			scope.functions.push(name);
			} else {
			scope.lexical.push(name);
			}

			if (bindingType & BIND_SCOPE_LEXICAL) {
			this.maybeExportDefined(scope, name);
			}
			} else if (bindingType & BIND_SCOPE_VAR) {
			for (let i = this.scopeStack.length - 1; i >= 0; --i) {
			scope = this.scopeStack[i];
			this.checkRedeclarationInScope(scope, name, bindingType, pos);
			scope.var.push(name);
			this.maybeExportDefined(scope, name);
			if (scope.flags & SCOPE_VAR) break;
			}
			}

			if (this.inModule && scope.flags & SCOPE_PROGRAM) {
			this.undefinedExports.delete(name);
			}
			}

			maybeExportDefined(scope, name) {
			if (this.inModule && scope.flags & SCOPE_PROGRAM) {
			this.undefinedExports.delete(name);
			}
			}

			checkRedeclarationInScope(scope, name, bindingType, pos) {
			if (this.isRedeclaredInScope(scope, name, bindingType)) {
			this.raise(pos, ErrorMessages.VarRedeclaration, name);
			}
			}

			isRedeclaredInScope(scope, name, bindingType) {
			if (!(bindingType & BIND_KIND_VALUE)) return false;

			if (bindingType & BIND_SCOPE_LEXICAL) {
			return scope.lexical.indexOf(name) > -1 \|\| scope.functions.indexOf(name) > -1 \|\| scope.var.indexOf(name) > -1;
			}

			if (bindingType & BIND_SCOPE_FUNCTION) {
			return scope.lexical.indexOf(name) > -1 \|\| !this.treatFunctionsAsVarInScope(scope) && scope.var.indexOf(name) > -1;
			}

			return scope.lexical.indexOf(name) > -1 && !(scope.flags & SCOPE_SIMPLE_CATCH && scope.lexical[0] === name) \|\| !this.treatFunctionsAsVarInScope(scope) && scope.functions.indexOf(name) > -1;
			}

			checkLocalExport(id) {
			if (this.scopeStack[0].lexical.indexOf(id.name) === -1 && this.scopeStack[0].var.indexOf(id.name) === -1 && this.scopeStack[0].functions.indexOf(id.name) === -1) {
			this.undefinedExports.set(id.name, id.start);
			}
			}

			currentScope() {
			return this.scopeStack[this.scopeStack.length - 1];
			}

			currentVarScope() {
			for (let i = this.scopeStack.length - 1;; i--) {
			const scope = this.scopeStack[i];

			if (scope.flags & SCOPE_VAR) {
			return scope;
			}
			}
			}

			currentThisScope() {
			for (let i = this.scopeStack.length - 1;; i--) {
			const scope = this.scopeStack[i];

			if ((scope.flags & SCOPE_VAR \|\| scope.flags & SCOPE_CLASS) && !(scope.flags & SCOPE_ARROW)) {
			return scope;
			}
			}
			}

			}

			class TypeScriptScope extends Scope {
			constructor(...args) {
			super(...args);
			this.types = [];
			this.enums = [];
			this.constEnums = [];
			this.classes = [];
			this.exportOnlyBindings = [];
			}

			}

			class TypeScriptScopeHandler extends ScopeHandler {
			createScope(flags) {
			return new TypeScriptScope(flags);
			}

			declareName(name, bindingType, pos) {
			const scope = this.currentScope();

			if (bindingType & BIND_FLAGS_TS_EXPORT_ONLY) {
			this.maybeExportDefined(scope, name);
			scope.exportOnlyBindings.push(name);
			return;
			}

			super.declareName(...arguments);

			if (bindingType & BIND_KIND_TYPE) {
			if (!(bindingType & BIND_KIND_VALUE)) {
			this.checkRedeclarationInScope(scope, name, bindingType, pos);
			this.maybeExportDefined(scope, name);
			}

			scope.types.push(name);
			}

			if (bindingType & BIND_FLAGS_TS_ENUM) scope.enums.push(name);
			if (bindingType & BIND_FLAGS_TS_CONST_ENUM) scope.constEnums.push(name);
			if (bindingType & BIND_FLAGS_CLASS) scope.classes.push(name);
			}

			isRedeclaredInScope(scope, name, bindingType) {
			if (scope.enums.indexOf(name) > -1) {
			if (bindingType & BIND_FLAGS_TS_ENUM) {
			const isConst = !!(bindingType & BIND_FLAGS_TS_CONST_ENUM);
			const wasConst = scope.constEnums.indexOf(name) > -1;
			return isConst !== wasConst;
			}

			return true;
			}

			if (bindingType & BIND_FLAGS_CLASS && scope.classes.indexOf(name) > -1) {
			if (scope.lexical.indexOf(name) > -1) {
			return !!(bindingType & BIND_KIND_VALUE);
			} else {
			return false;
			}
			}

			if (bindingType & BIND_KIND_TYPE && scope.types.indexOf(name) > -1) {
			return true;
			}

			return super.isRedeclaredInScope(...arguments);
			}

			checkLocalExport(id) {
			if (this.scopeStack[0].types.indexOf(id.name) === -1 && this.scopeStack[0].exportOnlyBindings.indexOf(id.name) === -1) {
			super.checkLocalExport(id);
			}
			}

			}

			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);
			}

			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 = Object.freeze({
			ClassMethodHasDeclare: "Class methods cannot have the 'declare' modifier",
			ClassMethodHasReadonly: "Class methods cannot have the 'readonly' modifier",
			ConstructorHasTypeParameters: "Type parameters cannot appear on a constructor declaration.",
			DeclareClassFieldHasInitializer: "Initializers are not allowed in ambient contexts.",
			DeclareFunctionHasImplementation: "An implementation cannot be declared in ambient contexts.",
			DuplicateModifier: "Duplicate modifier: '%0'",
			EmptyHeritageClauseType: "'%0' list cannot be empty.",
			EmptyTypeArguments: "Type argument list cannot be empty.",
			EmptyTypeParameters: "Type parameter list cannot be empty.",
			IndexSignatureHasAbstract: "Index signatures cannot have the 'abstract' modifier",
			IndexSignatureHasAccessibility: "Index signatures cannot have an accessibility modifier ('%0')",
			IndexSignatureHasStatic: "Index signatures cannot have the 'static' modifier",
			IndexSignatureHasDeclare: "Index signatures cannot have the 'declare' modifier",
			InvalidTupleMemberLabel: "Tuple members must be labeled with a simple identifier.",
			MixedLabeledAndUnlabeledElements: "Tuple members must all have names or all not have names.",
			OptionalTypeBeforeRequired: "A required element cannot follow an optional element.",
			PatternIsOptional: "A binding pattern parameter cannot be optional in an implementation signature.",
			PrivateElementHasAbstract: "Private elements cannot have the 'abstract' modifier.",
			PrivateElementHasAccessibility: "Private elements cannot have an accessibility modifier ('%0')",
			TypeAnnotationAfterAssign: "Type annotations must come before default assignments, e.g. instead of `age = 25: number` use `age: number = 25`",
			UnexpectedParameterModifier: "A parameter property is only allowed in a constructor implementation.",
			UnexpectedReadonly: "'readonly' type modifier is only permitted on array and tuple literal types.",
			UnexpectedTypeAnnotation: "Did not expect a type annotation here.",
			UnexpectedTypeCastInParameter: "Unexpected type cast in parameter position.",
			UnsupportedImportTypeArgument: "Argument in a type import must be a string literal",
			UnsupportedParameterPropertyKind: "A parameter property may not be declared using a binding pattern.",
			UnsupportedSignatureParameterKind: "Name in a signature must be an Identifier, ObjectPattern or ArrayPattern, instead got %0"
			});

			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;
			}
			}

			var typescript = (superClass => class extends superClass {
			getScopeHandler() {
			return TypeScriptScopeHandler;
			}

			tsIsIdentifier() {
			return this.match(types.name);
			}

			tsNextTokenCanFollowModifier() {
			this.next();
			return (this.match(types.bracketL) \|\| this.match(types.braceL) \|\| this.match(types.star) \|\| this.match(types.ellipsis) \|\| this.match(types.hash) \|\| this.isLiteralPropertyName()) && !this.hasPrecedingLineBreak();
			}

			tsParseModifier(allowedModifiers) {
			if (!this.match(types.name)) {
			return undefined;
			}

			const modifier = this.state.value;

			if (allowedModifiers.indexOf(modifier) !== -1 && this.tsTryParse(this.tsNextTokenCanFollowModifier.bind(this))) {
			return modifier;
			}

			return undefined;
			}

			tsParseModifiers(modified, allowedModifiers) {
			for (;;) {
			const startPos = this.state.start;
			const modifier = this.tsParseModifier(allowedModifiers);
			if (!modifier) break;

			if (Object.hasOwnProperty.call(modified, modifier)) {
			this.raise(startPos, TSErrors.DuplicateModifier, modifier);
			}

			modified[modifier] = true;
			}
			}

			tsIsListTerminator(kind) {
			switch (kind) {
			case "EnumMembers":
			case "TypeMembers":
			return this.match(types.braceR);

			case "HeritageClauseElement":
			return this.match(types.braceL);

			case "TupleElementTypes":
			return this.match(types.bracketR);

			case "TypeParametersOrArguments":
			return this.isRelational(">");
			}

			throw new Error("Unreachable");
			}

			tsParseList(kind, parseElement) {
			const result = [];

			while (!this.tsIsListTerminator(kind)) {
			result.push(parseElement());
			}

			return result;
			}

			tsParseDelimitedList(kind, parseElement) {
			return nonNull(this.tsParseDelimitedListWorker(kind, parseElement, true));
			}

			tsParseDelimitedListWorker(kind, parseElement, expectSuccess) {
			const result = [];

			for (;;) {
			if (this.tsIsListTerminator(kind)) {
			break;
			}

			const element = parseElement();

			if (element == null) {
			return undefined;
			}

			result.push(element);

			if (this.eat(types.comma)) {
			continue;
			}

			if (this.tsIsListTerminator(kind)) {
			break;
			}

			if (expectSuccess) {
			this.expect(types.comma);
			}

			return undefined;
			}

			return result;
			}

			tsParseBracketedList(kind, parseElement, bracket, skipFirstToken) {
			if (!skipFirstToken) {
			if (bracket) {
			this.expect(types.bracketL);
			} else {
			this.expectRelational("<");
			}
			}

			const result = this.tsParseDelimitedList(kind, parseElement);

			if (bracket) {
			this.expect(types.bracketR);
			} else {
			this.expectRelational(">");
			}

			return result;
			}

			tsParseImportType() {
			const node = this.startNode();
			this.expect(types._import);
			this.expect(types.parenL);

			if (!this.match(types.string)) {
			this.raise(this.state.start, TSErrors.UnsupportedImportTypeArgument);
			}

			node.argument = this.parseExprAtom();
			this.expect(types.parenR);

			if (this.eat(types.dot)) {
			node.qualifier = this.tsParseEntityName(true);
			}

			if (this.isRelational("<")) {
			node.typeParameters = this.tsParseTypeArguments();
			}

			return this.finishNode(node, "TSImportType");
			}

			tsParseEntityName(allowReservedWords) {
			let entity = this.parseIdentifier();

			while (this.eat(types.dot)) {
			const node = this.startNodeAtNode(entity);
			node.left = entity;
			node.right = this.parseIdentifier(allowReservedWords);
			entity = this.finishNode(node, "TSQualifiedName");
			}

			return entity;
			}

			tsParseTypeReference() {
			const node = this.startNode();
			node.typeName = this.tsParseEntityName(false);

			if (!this.hasPrecedingLineBreak() && this.isRelational("<")) {
			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(types._typeof);

			if (this.match(types._import)) {
			node.exprName = this.tsParseImportType();
			} else {
			node.exprName = this.tsParseEntityName(true);
			}

			return this.finishNode(node, "TSTypeQuery");
			}

			tsParseTypeParameter() {
			const node = this.startNode();
			node.name = this.parseIdentifierName(node.start);
			node.constraint = this.tsEatThenParseType(types._extends);
			node.default = this.tsEatThenParseType(types.eq);
			return this.finishNode(node, "TSTypeParameter");
			}

			tsTryParseTypeParameters() {
			if (this.isRelational("<")) {
			return this.tsParseTypeParameters();
			}
			}

			tsParseTypeParameters() {
			const node = this.startNode();

			if (this.isRelational("<") \|\| this.match(types.jsxTagStart)) {
			this.next();
			} else {
			this.unexpected();
			}

			node.params = this.tsParseBracketedList("TypeParametersOrArguments", this.tsParseTypeParameter.bind(this), false, true);

			if (node.params.length === 0) {
			this.raise(node.start, TSErrors.EmptyTypeParameters);
			}

			return this.finishNode(node, "TSTypeParameterDeclaration");
			}

			tsTryNextParseConstantContext() {
			if (this.lookahead().type === types._const) {
			this.next();
			return this.tsParseTypeReference();
			}

			return null;
			}

			tsFillSignature(returnToken, signature) {
			const returnTokenRequired = returnToken === types.arrow;
			signature.typeParameters = this.tsTryParseTypeParameters();
			this.expect(types.parenL);
			signature.parameters = this.tsParseBindingListForSignature();

			if (returnTokenRequired) {
			signature.typeAnnotation = this.tsParseTypeOrTypePredicateAnnotation(returnToken);
			} else if (this.match(returnToken)) {
			signature.typeAnnotation = this.tsParseTypeOrTypePredicateAnnotation(returnToken);
			}
			}

			tsParseBindingListForSignature() {
			return this.parseBindingList(types.parenR, 41).map(pattern => {
			if (pattern.type !== "Identifier" && pattern.type !== "RestElement" && pattern.type !== "ObjectPattern" && pattern.type !== "ArrayPattern") {
			this.raise(pattern.start, TSErrors.UnsupportedSignatureParameterKind, pattern.type);
			}

			return pattern;
			});
			}

			tsParseTypeMemberSemicolon() {
			if (!this.eat(types.comma)) {
			this.semicolon();
			}
			}

			tsParseSignatureMember(kind, node) {
			this.tsFillSignature(types.colon, node);
			this.tsParseTypeMemberSemicolon();
			return this.finishNode(node, kind);
			}

			tsIsUnambiguouslyIndexSignature() {
			this.next();
			return this.eat(types.name) && this.match(types.colon);
			}

			tsTryParseIndexSignature(node) {
			if (!(this.match(types.bracketL) && this.tsLookAhead(this.tsIsUnambiguouslyIndexSignature.bind(this)))) {
			return undefined;
			}

			this.expect(types.bracketL);
			const id = this.parseIdentifier();
			id.typeAnnotation = this.tsParseTypeAnnotation();
			this.resetEndLocation(id);
			this.expect(types.bracketR);
			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(types.question)) node.optional = true;
			const nodeAny = node;

			if (!readonly && (this.match(types.parenL) \|\| this.isRelational("<"))) {
			const method = nodeAny;
			this.tsFillSignature(types.colon, method);
			this.tsParseTypeMemberSemicolon();
			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(types.parenL) \|\| this.isRelational("<")) {
			return this.tsParseSignatureMember("TSCallSignatureDeclaration", node);
			}

			if (this.match(types._new)) {
			const id = this.startNode();
			this.next();

			if (this.match(types.parenL) \|\| this.isRelational("<")) {
			return this.tsParseSignatureMember("TSConstructSignatureDeclaration", node);
			} else {
			node.key = this.createIdentifier(id, "new");
			return this.tsParsePropertyOrMethodSignature(node, false);
			}
			}

			const readonly = !!this.tsParseModifier(["readonly"]);
			const idx = this.tsTryParseIndexSignature(node);

			if (idx) {
			if (readonly) node.readonly = true;
			return idx;
			}

			this.parsePropertyName(node, false);
			return this.tsParsePropertyOrMethodSignature(node, readonly);
			}

			tsParseTypeLiteral() {
			const node = this.startNode();
			node.members = this.tsParseObjectTypeMembers();
			return this.finishNode(node, "TSTypeLiteral");
			}

			tsParseObjectTypeMembers() {
			this.expect(types.braceL);
			const members = this.tsParseList("TypeMembers", this.tsParseTypeMember.bind(this));
			this.expect(types.braceR);
			return members;
			}

			tsIsStartOfMappedType() {
			this.next();

			if (this.eat(types.plusMin)) {
			return this.isContextual("readonly");
			}

			if (this.isContextual("readonly")) {
			this.next();
			}

			if (!this.match(types.bracketL)) {
			return false;
			}

			this.next();

			if (!this.tsIsIdentifier()) {
			return false;
			}

			this.next();
			return this.match(types._in);
			}

			tsParseMappedTypeParameter() {
			const node = this.startNode();
			node.name = this.parseIdentifierName(node.start);
			node.constraint = this.tsExpectThenParseType(types._in);
			return this.finishNode(node, "TSTypeParameter");
			}

			tsParseMappedType() {
			const node = this.startNode();
			this.expect(types.braceL);

			if (this.match(types.plusMin)) {
			node.readonly = this.state.value;
			this.next();
			this.expectContextual("readonly");
			} else if (this.eatContextual("readonly")) {
			node.readonly = true;
			}

			this.expect(types.bracketL);
			node.typeParameter = this.tsParseMappedTypeParameter();
			node.nameType = this.eatContextual("as") ? this.tsParseType() : null;
			this.expect(types.bracketR);

			if (this.match(types.plusMin)) {
			node.optional = this.state.value;
			this.next();
			this.expect(types.question);
			} else if (this.eat(types.question)) {
			node.optional = true;
			}

			node.typeAnnotation = this.tsTryParseType();
			this.semicolon();
			this.expect(types.braceR);
			return this.finishNode(node, "TSMappedType");
			}

			tsParseTupleType() {
			const node = this.startNode();
			node.elementTypes = this.tsParseBracketedList("TupleElementTypes", this.tsParseTupleElementType.bind(this), true, false);
			let seenOptionalElement = false;
			let labeledElements = null;
			node.elementTypes.forEach(elementNode => {
			var _labeledElements;

			let {
			type
			} = elementNode;

			if (seenOptionalElement && type !== "TSRestType" && type !== "TSOptionalType" && !(type === "TSNamedTupleMember" && elementNode.optional)) {
			this.raise(elementNode.start, TSErrors.OptionalTypeBeforeRequired);
			}

			seenOptionalElement = seenOptionalElement \|\| type === "TSNamedTupleMember" && elementNode.optional \|\| type === "TSOptionalType";

			if (type === "TSRestType") {
			elementNode = elementNode.typeAnnotation;
			type = elementNode.type;
			}

			const isLabeled = type === "TSNamedTupleMember";
			labeledElements = (_labeledElements = labeledElements) != null ? _labeledElements : isLabeled;

			if (labeledElements !== isLabeled) {
			this.raise(elementNode.start, TSErrors.MixedLabeledAndUnlabeledElements);
			}
			});
			return this.finishNode(node, "TSTupleType");
			}

			tsParseTupleElementType() {
			const {
			start: startPos,
			startLoc
			} = this.state;
			const rest = this.eat(types.ellipsis);
			let type = this.tsParseType();
			const optional = this.eat(types.question);
			const labeled = this.eat(types.colon);

			if (labeled) {
			const labeledNode = this.startNodeAtNode(type);
			labeledNode.optional = optional;

			if (type.type === "TSTypeReference" && !type.typeParameters && type.typeName.type === "Identifier") {
			labeledNode.label = type.typeName;
			} else {
			this.raise(type.start, TSErrors.InvalidTupleMemberLabel);
			labeledNode.label = type;
			}

			labeledNode.elementType = this.tsParseType();
			type = this.finishNode(labeledNode, "TSNamedTupleMember");
			} else if (optional) {
			const optionalTypeNode = this.startNodeAtNode(type);
			optionalTypeNode.typeAnnotation = type;
			type = this.finishNode(optionalTypeNode, "TSOptionalType");
			}

			if (rest) {
			const restNode = this.startNodeAt(startPos, startLoc);
			restNode.typeAnnotation = type;
			type = this.finishNode(restNode, "TSRestType");
			}

			return type;
			}

			tsParseParenthesizedType() {
			const node = this.startNode();
			this.expect(types.parenL);
			node.typeAnnotation = this.tsParseType();
			this.expect(types.parenR);
			return this.finishNode(node, "TSParenthesizedType");
			}

			tsParseFunctionOrConstructorType(type) {
			const node = this.startNode();

			if (type === "TSConstructorType") {
			this.expect(types._new);
			}

			this.tsFillSignature(types.arrow, node);
			return this.finishNode(node, type);
			}

			tsParseLiteralTypeNode() {
			const node = this.startNode();

			node.literal = (() => {
			switch (this.state.type) {
			case types.num:
			case types.bigint:
			case types.string:
			case types._true:
			case types._false:
			return this.parseExprAtom();

			default:
			throw this.unexpected();
			}
			})();

			return this.finishNode(node, "TSLiteralType");
			}

			tsParseTemplateLiteralType() {
			const node = this.startNode();
			node.literal = this.parseTemplate(false);
			return this.finishNode(node, "TSLiteralType");
			}

			parseTemplateSubstitution() {
			if (this.state.inType) return this.tsParseType();
			return super.parseTemplateSubstitution();
			}

			tsParseThisTypeOrThisTypePredicate() {
			const thisKeyword = this.tsParseThisTypeNode();

			if (this.isContextual("is") && !this.hasPrecedingLineBreak()) {
			return this.tsParseThisTypePredicate(thisKeyword);
			} else {
			return thisKeyword;
			}
			}

			tsParseNonArrayType() {
			switch (this.state.type) {
			case types.name:
			case types._void:
			case types._null:
			{
			const type = this.match(types._void) ? "TSVoidKeyword" : this.match(types._null) ? "TSNullKeyword" : keywordTypeFromName(this.state.value);

			if (type !== undefined && this.lookaheadCharCode() !== 46) {
			const node = this.startNode();
			this.next();
			return this.finishNode(node, type);
			}

			return this.tsParseTypeReference();
			}

			case types.string:
			case types.num:
			case types.bigint:
			case types._true:
			case types._false:
			return this.tsParseLiteralTypeNode();

			case types.plusMin:
			if (this.state.value === "-") {
			const node = this.startNode();
			const nextToken = this.lookahead();

			if (nextToken.type !== types.num && nextToken.type !== types.bigint) {
			throw this.unexpected();
			}

			node.literal = this.parseMaybeUnary();
			return this.finishNode(node, "TSLiteralType");
			}

			break;

			case types._this:
			return this.tsParseThisTypeOrThisTypePredicate();

			case types._typeof:
			return this.tsParseTypeQuery();

			case types._import:
			return this.tsParseImportType();

			case types.braceL:
			return this.tsLookAhead(this.tsIsStartOfMappedType.bind(this)) ? this.tsParseMappedType() : this.tsParseTypeLiteral();

			case types.bracketL:
			return this.tsParseTupleType();

			case types.parenL:
			return this.tsParseParenthesizedType();

			case types.backQuote:
			return this.tsParseTemplateLiteralType();
			}

			throw this.unexpected();
			}

			tsParseArrayTypeOrHigher() {
			let type = this.tsParseNonArrayType();

			while (!this.hasPrecedingLineBreak() && this.eat(types.bracketL)) {
			if (this.match(types.bracketR)) {
			const node = this.startNodeAtNode(type);
			node.elementType = type;
			this.expect(types.bracketR);
			type = this.finishNode(node, "TSArrayType");
			} else {
			const node = this.startNodeAtNode(type);
			node.objectType = type;
			node.indexType = this.tsParseType();
			this.expect(types.bracketR);
			type = this.finishNode(node, "TSIndexedAccessType");
			}
			}

			return type;
			}

			tsParseTypeOperator(operator) {
			const node = this.startNode();
			this.expectContextual(operator);
			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(node.start, TSErrors.UnexpectedReadonly);
			}
			}

			tsParseInferType() {
			const node = this.startNode();
			this.expectContextual("infer");
			const typeParameter = this.startNode();
			typeParameter.name = this.parseIdentifierName(typeParameter.start);
			node.typeParameter = this.finishNode(typeParameter, "TSTypeParameter");
			return this.finishNode(node, "TSInferType");
			}

			tsParseTypeOperatorOrHigher() {
			const operator = ["keyof", "unique", "readonly"].find(kw => this.isContextual(kw));
			return operator ? this.tsParseTypeOperator(operator) : this.isContextual("infer") ? this.tsParseInferType() : this.tsParseArrayTypeOrHigher();
			}

			tsParseUnionOrIntersectionType(kind, parseConstituentType, operator) {
			this.eat(operator);
			let type = parseConstituentType();

			if (this.match(operator)) {
			const types = [type];

			while (this.eat(operator)) {
			types.push(parseConstituentType());
			}

			const node = this.startNodeAtNode(type);
			node.types = types;
			type = this.finishNode(node, kind);
			}

			return type;
			}

			tsParseIntersectionTypeOrHigher() {
			return this.tsParseUnionOrIntersectionType("TSIntersectionType", this.tsParseTypeOperatorOrHigher.bind(this), types.bitwiseAND);
			}

			tsParseUnionTypeOrHigher() {
			return this.tsParseUnionOrIntersectionType("TSUnionType", this.tsParseIntersectionTypeOrHigher.bind(this), types.bitwiseOR);
			}

			tsIsStartOfFunctionType() {
			if (this.isRelational("<")) {
			return true;
			}

			return this.match(types.parenL) && this.tsLookAhead(this.tsIsUnambiguouslyStartOfFunctionType.bind(this));
			}

			tsSkipParameterStart() {
			if (this.match(types.name) \|\| this.match(types._this)) {
			this.next();
			return true;
			}

			if (this.match(types.braceL)) {
			let braceStackCounter = 1;
			this.next();

			while (braceStackCounter > 0) {
			if (this.match(types.braceL)) {
			++braceStackCounter;
			} else if (this.match(types.braceR)) {
			--braceStackCounter;
			}

			this.next();
			}

			return true;
			}

			if (this.match(types.bracketL)) {
			let braceStackCounter = 1;
			this.next();

			while (braceStackCounter > 0) {
			if (this.match(types.bracketL)) {
			++braceStackCounter;
			} else if (this.match(types.bracketR)) {
			--braceStackCounter;
			}

			this.next();
			}

			return true;
			}

			return false;
			}

			tsIsUnambiguouslyStartOfFunctionType() {
			this.next();

			if (this.match(types.parenR) \|\| this.match(types.ellipsis)) {
			return true;
			}

			if (this.tsSkipParameterStart()) {
			if (this.match(types.colon) \|\| this.match(types.comma) \|\| this.match(types.question) \|\| this.match(types.eq)) {
			return true;
			}

			if (this.match(types.parenR)) {
			this.next();

			if (this.match(types.arrow)) {
			return true;
			}
			}
			}

			return false;
			}

			tsParseTypeOrTypePredicateAnnotation(returnToken) {
			return this.tsInType(() => {
			const t = this.startNode();
			this.expect(returnToken);
			const asserts = !!this.tsTryParse(this.tsParseTypePredicateAsserts.bind(this));

			if (asserts && this.match(types._this)) {
			let thisTypePredicate = this.tsParseThisTypeOrThisTypePredicate();

			if (thisTypePredicate.type === "TSThisType") {
			const node = this.startNodeAtNode(t);
			node.parameterName = thisTypePredicate;
			node.asserts = true;
			thisTypePredicate = this.finishNode(node, "TSTypePredicate");
			} else {
			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);
			}

			const node = this.startNodeAtNode(t);
			node.parameterName = this.parseIdentifier();
			node.asserts = asserts;
			t.typeAnnotation = this.finishNode(node, "TSTypePredicate");
			return this.finishNode(t, "TSTypeAnnotation");
			}

			const type = this.tsParseTypeAnnotation(false);
			const node = this.startNodeAtNode(t);
			node.parameterName = typePredicateVariable;
			node.typeAnnotation = type;
			node.asserts = asserts;
			t.typeAnnotation = this.finishNode(node, "TSTypePredicate");
			return this.finishNode(t, "TSTypeAnnotation");
			});
			}

			tsTryParseTypeOrTypePredicateAnnotation() {
			return this.match(types.colon) ? this.tsParseTypeOrTypePredicateAnnotation(types.colon) : undefined;
			}

			tsTryParseTypeAnnotation() {
			return this.match(types.colon) ? this.tsParseTypeAnnotation() : undefined;
			}

			tsTryParseType() {
			return this.tsEatThenParseType(types.colon);
			}

			tsParseTypePredicatePrefix() {
			const id = this.parseIdentifier();

			if (this.isContextual("is") && !this.hasPrecedingLineBreak()) {
			this.next();
			return id;
			}
			}

			tsParseTypePredicateAsserts() {
			if (!this.match(types.name) \|\| this.state.value !== "asserts" \|\| this.hasPrecedingLineBreak()) {
			return false;
			}

			const containsEsc = this.state.containsEsc;
			this.next();

			if (!this.match(types.name) && !this.match(types._this)) {
			return false;
			}

			if (containsEsc) {
			this.raise(this.state.lastTokStart, ErrorMessages.InvalidEscapedReservedWord, "asserts");
			}

			return true;
			}

			tsParseTypeAnnotation(eatColon = true, t = this.startNode()) {
			this.tsInType(() => {
			if (eatColon) this.expect(types.colon);
			t.typeAnnotation = this.tsParseType();
			});
			return this.finishNode(t, "TSTypeAnnotation");
			}

			tsParseType() {
			assert(this.state.inType);
			const type = this.tsParseNonConditionalType();

			if (this.hasPrecedingLineBreak() \|\| !this.eat(types._extends)) {
			return type;
			}

			const node = this.startNodeAtNode(type);
			node.checkType = type;
			node.extendsType = this.tsParseNonConditionalType();
			this.expect(types.question);
			node.trueType = this.tsParseType();
			this.expect(types.colon);
			node.falseType = this.tsParseType();
			return this.finishNode(node, "TSConditionalType");
			}

			tsParseNonConditionalType() {
			if (this.tsIsStartOfFunctionType()) {
			return this.tsParseFunctionOrConstructorType("TSFunctionType");
			}

			if (this.match(types._new)) {
			return this.tsParseFunctionOrConstructorType("TSConstructorType");
			}

			return this.tsParseUnionTypeOrHigher();
			}

			tsParseTypeAssertion() {
			const node = this.startNode();

			const _const = this.tsTryNextParseConstantContext();

			node.typeAnnotation = _const \|\| this.tsNextThenParseType();
			this.expectRelational(">");
			node.expression = this.parseMaybeUnary();
			return this.finishNode(node, "TSTypeAssertion");
			}

			tsParseHeritageClause(descriptor) {
			const originalStart = this.state.start;
			const delimitedList = this.tsParseDelimitedList("HeritageClauseElement", this.tsParseExpressionWithTypeArguments.bind(this));

			if (!delimitedList.length) {
			this.raise(originalStart, TSErrors.EmptyHeritageClauseType, descriptor);
			}

			return delimitedList;
			}

			tsParseExpressionWithTypeArguments() {
			const node = this.startNode();
			node.expression = this.tsParseEntityName(false);

			if (this.isRelational("<")) {
			node.typeParameters = this.tsParseTypeArguments();
			}

			return this.finishNode(node, "TSExpressionWithTypeArguments");
			}

			tsParseInterfaceDeclaration(node) {
			node.id = this.parseIdentifier();
			this.checkLVal(node.id, "typescript interface declaration", BIND_TS_INTERFACE);
			node.typeParameters = this.tsTryParseTypeParameters();

			if (this.eat(types._extends)) {
			node.extends = this.tsParseHeritageClause("extends");
			}

			const body = this.startNode();
			body.body = this.tsInType(this.tsParseObjectTypeMembers.bind(this));
			node.body = this.finishNode(body, "TSInterfaceBody");
			return this.finishNode(node, "TSInterfaceDeclaration");
			}

			tsParseTypeAliasDeclaration(node) {
			node.id = this.parseIdentifier();
			this.checkLVal(node.id, "typescript type alias", BIND_TS_TYPE);
			node.typeParameters = this.tsTryParseTypeParameters();
			node.typeAnnotation = this.tsInType(() => {
			this.expect(types.eq);

			if (this.isContextual("intrinsic") && this.lookahead().type !== types.dot) {
			const node = this.startNode();
			this.next();
			return this.finishNode(node, "TSIntrinsicKeyword");
			}

			return this.tsParseType();
			});
			this.semicolon();
			return this.finishNode(node, "TSTypeAliasDeclaration");
			}

			tsInNoContext(cb) {
			const oldContext = this.state.context;
			this.state.context = [oldContext[0]];

			try {
			return cb();
			} finally {
			this.state.context = oldContext;
			}
			}

			tsInType(cb) {
			const oldInType = this.state.inType;
			this.state.inType = true;

			try {
			return cb();
			} finally {
			this.state.inType = oldInType;
			}
			}

			tsEatThenParseType(token) {
			return !this.match(token) ? undefined : this.tsNextThenParseType();
			}

			tsExpectThenParseType(token) {
			return this.tsDoThenParseType(() => this.expect(token));
			}

			tsNextThenParseType() {
			return this.tsDoThenParseType(() => this.next());
			}

			tsDoThenParseType(cb) {
			return this.tsInType(() => {
			cb();
			return this.tsParseType();
			});
			}

			tsParseEnumMember() {
			const node = this.startNode();
			node.id = this.match(types.string) ? this.parseExprAtom() : this.parseIdentifier(true);

			if (this.eat(types.eq)) {
			node.initializer = this.parseMaybeAssignAllowIn();
			}

			return this.finishNode(node, "TSEnumMember");
			}

			tsParseEnumDeclaration(node, isConst) {
			if (isConst) node.const = true;
			node.id = this.parseIdentifier();
			this.checkLVal(node.id, "typescript enum declaration", isConst ? BIND_TS_CONST_ENUM : BIND_TS_ENUM);
			this.expect(types.braceL);
			node.members = this.tsParseDelimitedList("EnumMembers", this.tsParseEnumMember.bind(this));
			this.expect(types.braceR);
			return this.finishNode(node, "TSEnumDeclaration");
			}

			tsParseModuleBlock() {
			const node = this.startNode();
			this.scope.enter(SCOPE_OTHER);
			this.expect(types.braceL);
			this.parseBlockOrModuleBlockBody(node.body = [], undefined, true, types.braceR);
			this.scope.exit();
			return this.finishNode(node, "TSModuleBlock");
			}

			tsParseModuleOrNamespaceDeclaration(node, nested = false) {
			node.id = this.parseIdentifier();

			if (!nested) {
			this.checkLVal(node.id, "module or namespace declaration", BIND_TS_NAMESPACE);
			}

			if (this.eat(types.dot)) {
			const inner = this.startNode();
			this.tsParseModuleOrNamespaceDeclaration(inner, true);
			node.body = inner;
			} else {
			this.scope.enter(SCOPE_TS_MODULE);
			this.prodParam.enter(PARAM);
			node.body = this.tsParseModuleBlock();
			this.prodParam.exit();
			this.scope.exit();
			}

			return this.finishNode(node, "TSModuleDeclaration");
			}

			tsParseAmbientExternalModuleDeclaration(node) {
			if (this.isContextual("global")) {
			node.global = true;
			node.id = this.parseIdentifier();
			} else if (this.match(types.string)) {
			node.id = this.parseExprAtom();
			} else {
			this.unexpected();
			}

			if (this.match(types.braceL)) {
			this.scope.enter(SCOPE_TS_MODULE);
			this.prodParam.enter(PARAM);
			node.body = this.tsParseModuleBlock();
			this.prodParam.exit();
			this.scope.exit();
			} else {
			this.semicolon();
			}

			return this.finishNode(node, "TSModuleDeclaration");
			}

			tsParseImportEqualsDeclaration(node, isExport) {
			node.isExport = isExport \|\| false;
			node.id = this.parseIdentifier();
			this.checkLVal(node.id, "import equals declaration", BIND_LEXICAL);
			this.expect(types.eq);
			node.moduleReference = this.tsParseModuleReference();
			this.semicolon();
			return this.finishNode(node, "TSImportEqualsDeclaration");
			}

			tsIsExternalModuleReference() {
			return this.isContextual("require") && this.lookaheadCharCode() === 40;
			}

			tsParseModuleReference() {
			return this.tsIsExternalModuleReference() ? this.tsParseExternalModuleReference() : this.tsParseEntityName(false);
			}

			tsParseExternalModuleReference() {
			const node = this.startNode();
			this.expectContextual("require");
			this.expect(types.parenL);

			if (!this.match(types.string)) {
			throw this.unexpected();
			}

			node.expression = this.parseExprAtom();
			this.expect(types.parenR);
			return this.finishNode(node, "TSExternalModuleReference");
			}

			tsLookAhead(f) {
			const state = this.state.clone();
			const res = f();
			this.state = state;
			return res;
			}

			tsTryParseAndCatch(f) {
			const result = this.tryParse(abort => f() \|\| abort());
			if (result.aborted \|\| !result.node) return undefined;
			if (result.error) this.state = result.failState;
			return result.node;
			}

			tsTryParse(f) {
			const state = this.state.clone();
			const result = f();

			if (result !== undefined && result !== false) {
			return result;
			} else {
			this.state = state;
			return undefined;
			}
			}

			tsTryParseDeclare(nany) {
			if (this.isLineTerminator()) {
			return;
			}

			let starttype = this.state.type;
			let kind;

			if (this.isContextual("let")) {
			starttype = types._var;
			kind = "let";
			}

			return this.tsInDeclareContext(() => {
			switch (starttype) {
			case types._function:
			nany.declare = true;
			return this.parseFunctionStatement(nany, false, true);

			case types._class:
			nany.declare = true;
			return this.parseClass(nany, true, false);

			case types._const:
			if (this.match(types._const) && this.isLookaheadContextual("enum")) {
			this.expect(types._const);
			this.expectContextual("enum");
			return this.tsParseEnumDeclaration(nany, true);
			}

			case types._var:
			kind = kind \|\| this.state.value;
			return this.parseVarStatement(nany, kind);

			case types.name:
			{
			const value = this.state.value;

			if (value === "global") {
			return this.tsParseAmbientExternalModuleDeclaration(nany);
			} else {
			return this.tsParseDeclaration(nany, value, true);
			}
			}
			}
			});
			}

			tsTryParseExportDeclaration() {
			return this.tsParseDeclaration(this.startNode(), this.state.value, true);
			}

			tsParseExpressionStatement(node, expr) {
			switch (expr.name) {
			case "declare":
			{
			const declaration = this.tsTryParseDeclare(node);

			if (declaration) {
			declaration.declare = true;
			return declaration;
			}

			break;
			}

			case "global":
			if (this.match(types.braceL)) {
			this.scope.enter(SCOPE_TS_MODULE);
			this.prodParam.enter(PARAM);
			const mod = node;
			mod.global = true;
			mod.id = expr;
			mod.body = this.tsParseModuleBlock();
			this.scope.exit();
			this.prodParam.exit();
			return this.finishNode(mod, "TSModuleDeclaration");
			}

			break;

			default:
			return this.tsParseDeclaration(node, expr.name, false);
			}
			}

			tsParseDeclaration(node, value, next) {
			switch (value) {
			case "abstract":
			if (this.tsCheckLineTerminatorAndMatch(types._class, next)) {
			const cls = node;
			cls.abstract = true;

			if (next) {
			this.next();

			if (!this.match(types._class)) {
			this.unexpected(null, types._class);
			}
			}

			return this.parseClass(cls, true, false);
			}

			break;

			case "enum":
			if (next \|\| this.match(types.name)) {
			if (next) this.next();
			return this.tsParseEnumDeclaration(node, false);
			}

			break;

			case "interface":
			if (this.tsCheckLineTerminatorAndMatch(types.name, next)) {
			if (next) this.next();
			return this.tsParseInterfaceDeclaration(node);
			}

			break;

			case "module":
			if (next) this.next();

			if (this.match(types.string)) {
			return this.tsParseAmbientExternalModuleDeclaration(node);
			} else if (this.tsCheckLineTerminatorAndMatch(types.name, next)) {
			return this.tsParseModuleOrNamespaceDeclaration(node);
			}

			break;

			case "namespace":
			if (this.tsCheckLineTerminatorAndMatch(types.name, next)) {
			if (next) this.next();
			return this.tsParseModuleOrNamespaceDeclaration(node);
			}

			break;

			case "type":
			if (this.tsCheckLineTerminatorAndMatch(types.name, next)) {
			if (next) this.next();
			return this.tsParseTypeAliasDeclaration(node);
			}

			break;
			}
			}

			tsCheckLineTerminatorAndMatch(tokenType, next) {
			return (next \|\| this.match(tokenType)) && !this.isLineTerminator();
			}

			tsTryParseGenericAsyncArrowFunction(startPos, startLoc) {
			if (!this.isRelational("<")) {
			return undefined;
			}

			const oldMaybeInArrowParameters = this.state.maybeInArrowParameters;
			this.state.maybeInArrowParameters = true;
			const res = this.tsTryParseAndCatch(() => {
			const node = this.startNodeAt(startPos, startLoc);
			node.typeParameters = this.tsParseTypeParameters();
			super.parseFunctionParams(node);
			node.returnType = this.tsTryParseTypeOrTypePredicateAnnotation();
			this.expect(types.arrow);
			return node;
			});
			this.state.maybeInArrowParameters = oldMaybeInArrowParameters;

			if (!res) {
			return undefined;
			}

			return this.parseArrowExpression(res, null, true);
			}

			tsParseTypeArguments() {
			const node = this.startNode();
			node.params = this.tsInType(() => this.tsInNoContext(() => {
			this.expectRelational("<");
			return this.tsParseDelimitedList("TypeParametersOrArguments", this.tsParseType.bind(this));
			}));

			if (node.params.length === 0) {
			this.raise(node.start, TSErrors.EmptyTypeArguments);
			}

			this.state.exprAllowed = false;
			this.expectRelational(">");
			return this.finishNode(node, "TSTypeParameterInstantiation");
			}

			tsIsDeclarationStart() {
			if (this.match(types.name)) {
			switch (this.state.value) {
			case "abstract":
			case "declare":
			case "enum":
			case "interface":
			case "module":
			case "namespace":
			case "type":
			return true;
			}
			}

			return false;
			}

			isExportDefaultSpecifier() {
			if (this.tsIsDeclarationStart()) return false;
			return super.isExportDefaultSpecifier();
			}

			parseAssignableListItem(allowModifiers, decorators) {
			const startPos = this.state.start;
			const startLoc = this.state.startLoc;
			let accessibility;
			let readonly = false;

			if (allowModifiers !== undefined) {
			accessibility = this.parseAccessModifier();
			readonly = !!this.tsParseModifier(["readonly"]);

			if (allowModifiers === false && (accessibility \|\| readonly)) {
			this.raise(startPos, TSErrors.UnexpectedParameterModifier);
			}
			}

			const left = this.parseMaybeDefault();
			this.parseAssignableListItemTypes(left);
			const elt = this.parseMaybeDefault(left.start, left.loc.start, left);

			if (accessibility \|\| readonly) {
			const pp = this.startNodeAt(startPos, startLoc);

			if (decorators.length) {
			pp.decorators = decorators;
			}

			if (accessibility) pp.accessibility = accessibility;
			if (readonly) pp.readonly = readonly;

			if (elt.type !== "Identifier" && elt.type !== "AssignmentPattern") {
			this.raise(pp.start, TSErrors.UnsupportedParameterPropertyKind);
			}

			pp.parameter = elt;
			return this.finishNode(pp, "TSParameterProperty");
			}

			if (decorators.length) {
			left.decorators = decorators;
			}

			return elt;
			}

			parseFunctionBodyAndFinish(node, type, isMethod = false) {
			if (this.match(types.colon)) {
			node.returnType = this.tsParseTypeOrTypePredicateAnnotation(types.colon);
			}

			const bodilessType = type === "FunctionDeclaration" ? "TSDeclareFunction" : type === "ClassMethod" ? "TSDeclareMethod" : undefined;

			if (bodilessType && !this.match(types.braceL) && this.isLineTerminator()) {
			this.finishNode(node, bodilessType);
			return;
			}

			if (bodilessType === "TSDeclareFunction" && this.state.isDeclareContext) {
			this.raise(node.start, TSErrors.DeclareFunctionHasImplementation);

			if (node.declare) {
			super.parseFunctionBodyAndFinish(node, bodilessType, isMethod);
			return;
			}
			}

			super.parseFunctionBodyAndFinish(node, type, isMethod);
			}

			registerFunctionStatementId(node) {
			if (!node.body && node.id) {
			this.checkLVal(node.id, "function name", BIND_TS_AMBIENT);
			} else {
			super.registerFunctionStatementId(...arguments);
			}
			}

			tsCheckForInvalidTypeCasts(items) {
			items.forEach(node => {
			if ((node == null ? void 0 : node.type) === "TSTypeCastExpression") {
			this.raise(node.typeAnnotation.start, TSErrors.UnexpectedTypeAnnotation);
			}
			});
			}

			toReferencedList(exprList, isInParens) {
			this.tsCheckForInvalidTypeCasts(exprList);
			return exprList;
			}

			parseArrayLike(...args) {
			const node = super.parseArrayLike(...args);

			if (node.type === "ArrayExpression") {
			this.tsCheckForInvalidTypeCasts(node.elements);
			}

			return node;
			}

			parseSubscript(base, startPos, startLoc, noCalls, state) {
			if (!this.hasPrecedingLineBreak() && this.match(types.bang)) {
			this.state.exprAllowed = false;
			this.next();
			const nonNullExpression = this.startNodeAt(startPos, startLoc);
			nonNullExpression.expression = base;
			return this.finishNode(nonNullExpression, "TSNonNullExpression");
			}

			if (this.isRelational("<")) {
			const result = this.tsTryParseAndCatch(() => {
			if (!noCalls && this.atPossibleAsyncArrow(base)) {
			const asyncArrowFn = this.tsTryParseGenericAsyncArrowFunction(startPos, startLoc);

			if (asyncArrowFn) {
			return asyncArrowFn;
			}
			}

			const node = this.startNodeAt(startPos, startLoc);
			node.callee = base;
			const typeArguments = this.tsParseTypeArguments();

			if (typeArguments) {
			if (!noCalls && this.eat(types.parenL)) {
			node.arguments = this.parseCallExpressionArguments(types.parenR, false);
			this.tsCheckForInvalidTypeCasts(node.arguments);
			node.typeParameters = typeArguments;
			return this.finishCallExpression(node, state.optionalChainMember);
			} else if (this.match(types.backQuote)) {
			const result = this.parseTaggedTemplateExpression(base, startPos, startLoc, state);
			result.typeParameters = typeArguments;
			return result;
			}
			}

			this.unexpected();
			});
			if (result) return result;
			}

			return super.parseSubscript(base, startPos, startLoc, noCalls, state);
			}

			parseNewArguments(node) {
			if (this.isRelational("<")) {
			const typeParameters = this.tsTryParseAndCatch(() => {
			const args = this.tsParseTypeArguments();
			if (!this.match(types.parenL)) this.unexpected();
			return args;
			});

			if (typeParameters) {
			node.typeParameters = typeParameters;
			}
			}

			super.parseNewArguments(node);
			}

			parseExprOp(left, leftStartPos, leftStartLoc, minPrec) {
			if (nonNull(types._in.binop) > minPrec && !this.hasPrecedingLineBreak() && this.isContextual("as")) {
			const node = this.startNodeAt(leftStartPos, leftStartLoc);
			node.expression = left;

			const _const = this.tsTryNextParseConstantContext();

			if (_const) {
			node.typeAnnotation = _const;
			} else {
			node.typeAnnotation = this.tsNextThenParseType();
			}

			this.finishNode(node, "TSAsExpression");
			this.reScan_lt_gt();
			return this.parseExprOp(node, leftStartPos, leftStartLoc, minPrec);
			}

			return super.parseExprOp(left, leftStartPos, leftStartLoc, minPrec);
			}

			checkReservedWord(word, startLoc, checkKeywords, isBinding) {}

			checkDuplicateExports() {}

			parseImport(node) {
			if (this.match(types.name) \|\| this.match(types.star) \|\| this.match(types.braceL)) {
			const ahead = this.lookahead();

			if (this.match(types.name) && ahead.type === types.eq) {
			return this.tsParseImportEqualsDeclaration(node);
			}

			if (this.isContextual("type") && ahead.type !== types.comma && !(ahead.type === types.name && ahead.value === "from")) {
			node.importKind = "type";
			this.next();
			}
			}

			if (!node.importKind) {
			node.importKind = "value";
			}

			const importNode = super.parseImport(node);

			if (importNode.importKind === "type" && importNode.specifiers.length > 1 && importNode.specifiers[0].type === "ImportDefaultSpecifier") {
			this.raise(importNode.start, "A type-only import can specify a default import or named bindings, but not both.");
			}

			return importNode;
			}

			parseExport(node) {
			if (this.match(types._import)) {
			this.expect(types._import);
			return this.tsParseImportEqualsDeclaration(node, true);
			} else if (this.eat(types.eq)) {
			const assign = node;
			assign.expression = this.parseExpression();
			this.semicolon();
			return this.finishNode(assign, "TSExportAssignment");
			} else if (this.eatContextual("as")) {
			const decl = node;
			this.expectContextual("namespace");
			decl.id = this.parseIdentifier();
			this.semicolon();
			return this.finishNode(decl, "TSNamespaceExportDeclaration");
			} else {
			if (this.isContextual("type") && this.lookahead().type === types.braceL) {
			this.next();
			node.exportKind = "type";
			} else {
			node.exportKind = "value";
			}

			return super.parseExport(node);
			}
			}

			isAbstractClass() {
			return this.isContextual("abstract") && this.lookahead().type === types._class;
			}

			parseExportDefaultExpression() {
			if (this.isAbstractClass()) {
			const cls = this.startNode();
			this.next();
			this.parseClass(cls, true, true);
			cls.abstract = true;
			return cls;
			}

			if (this.state.value === "interface") {
			const result = this.tsParseDeclaration(this.startNode(), this.state.value, true);
			if (result) return result;
			}

			return super.parseExportDefaultExpression();
			}

			parseStatementContent(context, topLevel) {
			if (this.state.type === types._const) {
			const ahead = this.lookahead();

			if (ahead.type === types.name && ahead.value === "enum") {
			const node = this.startNode();
			this.expect(types._const);
			this.expectContextual("enum");
			return this.tsParseEnumDeclaration(node, true);
			}
			}

			return super.parseStatementContent(context, topLevel);
			}

			parseAccessModifier() {
			return this.tsParseModifier(["public", "protected", "private"]);
			}

			parseClassMember(classBody, member, state) {
			this.tsParseModifiers(member, ["declare"]);
			const accessibility = this.parseAccessModifier();
			if (accessibility) member.accessibility = accessibility;
			this.tsParseModifiers(member, ["declare"]);

			const callParseClassMember = () => {
			super.parseClassMember(classBody, member, state);
			};

			if (member.declare) {
			this.tsInDeclareContext(callParseClassMember);
			} else {
			callParseClassMember();
			}
			}

			parseClassMemberWithIsStatic(classBody, member, state, isStatic) {
			this.tsParseModifiers(member, ["abstract", "readonly", "declare"]);
			const idx = this.tsTryParseIndexSignature(member);

			if (idx) {
			classBody.body.push(idx);

			if (member.abstract) {
			this.raise(member.start, TSErrors.IndexSignatureHasAbstract);
			}

			if (isStatic) {
			this.raise(member.start, TSErrors.IndexSignatureHasStatic);
			}

			if (member.accessibility) {
			this.raise(member.start, TSErrors.IndexSignatureHasAccessibility, member.accessibility);
			}

			if (member.declare) {
			this.raise(member.start, TSErrors.IndexSignatureHasDeclare);
			}

			return;
			}

			super.parseClassMemberWithIsStatic(classBody, member, state, isStatic);
			}

			parsePostMemberNameModifiers(methodOrProp) {
			const optional = this.eat(types.question);
			if (optional) methodOrProp.optional = true;

			if (methodOrProp.readonly && this.match(types.parenL)) {
			this.raise(methodOrProp.start, TSErrors.ClassMethodHasReadonly);
			}

			if (methodOrProp.declare && this.match(types.parenL)) {
			this.raise(methodOrProp.start, TSErrors.ClassMethodHasDeclare);
			}
			}

			parseExpressionStatement(node, expr) {
			const decl = expr.type === "Identifier" ? this.tsParseExpressionStatement(node, expr) : undefined;
			return decl \|\| super.parseExpressionStatement(node, expr);
			}

			shouldParseExportDeclaration() {
			if (this.tsIsDeclarationStart()) return true;
			return super.shouldParseExportDeclaration();
			}

			parseConditional(expr, startPos, startLoc, refNeedsArrowPos) {
			if (!refNeedsArrowPos \|\| !this.match(types.question)) {
			return super.parseConditional(expr, startPos, startLoc, refNeedsArrowPos);
			}

			const result = this.tryParse(() => super.parseConditional(expr, startPos, startLoc));

			if (!result.node) {
			refNeedsArrowPos.start = result.error.pos \|\| this.state.start;
			return expr;
			}

			if (result.error) this.state = result.failState;
			return result.node;
			}

			parseParenItem(node, startPos, startLoc) {
			node = super.parseParenItem(node, startPos, startLoc);

			if (this.eat(types.question)) {
			node.optional = true;
			this.resetEndLocation(node);
			}

			if (this.match(types.colon)) {
			const typeCastNode = this.startNodeAt(startPos, startLoc);
			typeCastNode.expression = node;
			typeCastNode.typeAnnotation = this.tsParseTypeAnnotation();
			return this.finishNode(typeCastNode, "TSTypeCastExpression");
			}

			return node;
			}

			parseExportDeclaration(node) {
			const startPos = this.state.start;
			const startLoc = this.state.startLoc;
			const isDeclare = this.eatContextual("declare");
			let declaration;

			if (this.match(types.name)) {
			declaration = this.tsTryParseExportDeclaration();
			}

			if (!declaration) {
			declaration = super.parseExportDeclaration(node);
			}

			if (declaration && (declaration.type === "TSInterfaceDeclaration" \|\| declaration.type === "TSTypeAliasDeclaration" \|\| isDeclare)) {
			node.exportKind = "type";
			}

			if (declaration && isDeclare) {
			this.resetStartLocation(declaration, startPos, startLoc);
			declaration.declare = true;
			}

			return declaration;
			}

			parseClassId(node, isStatement, optionalId) {
			if ((!isStatement \|\| optionalId) && this.isContextual("implements")) {
			return;
			}

			super.parseClassId(node, isStatement, optionalId, node.declare ? BIND_TS_AMBIENT : BIND_CLASS);
			const typeParameters = this.tsTryParseTypeParameters();
			if (typeParameters) node.typeParameters = typeParameters;
			}

			parseClassPropertyAnnotation(node) {
			if (!node.optional && this.eat(types.bang)) {
			node.definite = true;
			}

			const type = this.tsTryParseTypeAnnotation();
			if (type) node.typeAnnotation = type;
			}

			parseClassProperty(node) {
			this.parseClassPropertyAnnotation(node);

			if (this.state.isDeclareContext && this.match(types.eq)) {
			this.raise(this.state.start, TSErrors.DeclareClassFieldHasInitializer);
			}

			return super.parseClassProperty(node);
			}

			parseClassPrivateProperty(node) {
			if (node.abstract) {
			this.raise(node.start, TSErrors.PrivateElementHasAbstract);
			}

			if (node.accessibility) {
			this.raise(node.start, TSErrors.PrivateElementHasAccessibility, node.accessibility);
			}

			this.parseClassPropertyAnnotation(node);
			return super.parseClassPrivateProperty(node);
			}

			pushClassMethod(classBody, method, isGenerator, isAsync, isConstructor, allowsDirectSuper) {
			const typeParameters = this.tsTryParseTypeParameters();

			if (typeParameters && isConstructor) {
			this.raise(typeParameters.start, TSErrors.ConstructorHasTypeParameters);
			}

			if (typeParameters) method.typeParameters = typeParameters;
			super.pushClassMethod(classBody, method, isGenerator, isAsync, isConstructor, allowsDirectSuper);
			}

			pushClassPrivateMethod(classBody, method, isGenerator, isAsync) {
			const typeParameters = this.tsTryParseTypeParameters();
			if (typeParameters) method.typeParameters = typeParameters;
			super.pushClassPrivateMethod(classBody, method, isGenerator, isAsync);
			}

			parseClassSuper(node) {
			super.parseClassSuper(node);

			if (node.superClass && this.isRelational("<")) {
			node.superTypeParameters = this.tsParseTypeArguments();
			}

			if (this.eatContextual("implements")) {
			node.implements = this.tsParseHeritageClause("implements");
			}
			}

			parseObjPropValue(prop, ...args) {
			const typeParameters = this.tsTryParseTypeParameters();
			if (typeParameters) prop.typeParameters = typeParameters;
			super.parseObjPropValue(prop, ...args);
			}

			parseFunctionParams(node, allowModifiers) {
			const typeParameters = this.tsTryParseTypeParameters();
			if (typeParameters) node.typeParameters = typeParameters;
			super.parseFunctionParams(node, allowModifiers);
			}

			parseVarId(decl, kind) {
			super.parseVarId(decl, kind);

			if (decl.id.type === "Identifier" && this.eat(types.bang)) {
			decl.definite = true;
			}

			const type = this.tsTryParseTypeAnnotation();

			if (type) {
			decl.id.typeAnnotation = type;
			this.resetEndLocation(decl.id);
			}
			}

			parseAsyncArrowFromCallExpression(node, call) {
			if (this.match(types.colon)) {
			node.returnType = this.tsParseTypeAnnotation();
			}

			return super.parseAsyncArrowFromCallExpression(node, call);
			}

			parseMaybeAssign(...args) {
			var _jsx, _jsx2, _typeCast, _jsx3, _typeCast2, _jsx4, _typeCast3;

			let state;
			let jsx;
			let typeCast;

			if (this.match(types.jsxTagStart)) {
			state = this.state.clone();
			jsx = this.tryParse(() => super.parseMaybeAssign(...args), state);
			if (!jsx.error) return jsx.node;
			const {
			context
			} = this.state;

			if (context[context.length - 1] === types$1.j_oTag) {
			context.length -= 2;
			} else if (context[context.length - 1] === types$1.j_expr) {
			context.length -= 1;
			}
			}

			if (!((_jsx = jsx) == null ? void 0 : _jsx.error) && !this.isRelational("<")) {
			return super.parseMaybeAssign(...args);
			}

			let typeParameters;
			state = state \|\| this.state.clone();
			const arrow = this.tryParse(abort => {
			var _typeParameters;

			typeParameters = this.tsParseTypeParameters();
			const expr = super.parseMaybeAssign(...args);

			if (expr.type !== "ArrowFunctionExpression" \|\| expr.extra && 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) return arrow.node;

			if (!jsx) {
			assert(!this.hasPlugin("jsx"));
			typeCast = this.tryParse(() => super.parseMaybeAssign(...args), state);
			if (!typeCast.error) return typeCast.node;
			}

			if ((_jsx2 = jsx) == null ? void 0 : _jsx2.node) {
			this.state = jsx.failState;
			return jsx.node;
			}

			if (arrow.node) {
			this.state = arrow.failState;
			return arrow.node;
			}

			if ((_typeCast = typeCast) == null ? void 0 : _typeCast.node) {
			this.state = typeCast.failState;
			return typeCast.node;
			}

			if ((_jsx3 = jsx) == null ? void 0 : _jsx3.thrown) throw jsx.error;
			if (arrow.thrown) throw arrow.error;
			if ((_typeCast2 = typeCast) == null ? void 0 : _typeCast2.thrown) throw typeCast.error;
			throw ((_jsx4 = jsx) == null ? void 0 : _jsx4.error) \|\| arrow.error \|\| ((_typeCast3 = typeCast) == null ? void 0 : _typeCast3.error);
			}

			parseMaybeUnary(refExpressionErrors) {
			if (!this.hasPlugin("jsx") && this.isRelational("<")) {
			return this.tsParseTypeAssertion();
			} else {
			return super.parseMaybeUnary(refExpressionErrors);
			}
			}

			parseArrow(node) {
			if (this.match(types.colon)) {
			const result = this.tryParse(abort => {
			const returnType = this.tsParseTypeOrTypePredicateAnnotation(types.colon);
			if (this.canInsertSemicolon() \|\| !this.match(types.arrow)) abort();
			return returnType;
			});
			if (result.aborted) return;

			if (!result.thrown) {
			if (result.error) this.state = result.failState;
			node.returnType = result.node;
			}
			}

			return super.parseArrow(node);
			}

			parseAssignableListItemTypes(param) {
			if (this.eat(types.question)) {
			if (param.type !== "Identifier" && !this.state.isDeclareContext && !this.state.inType) {
			this.raise(param.start, TSErrors.PatternIsOptional);
			}

			param.optional = true;
			}

			const type = this.tsTryParseTypeAnnotation();
			if (type) param.typeAnnotation = type;
			this.resetEndLocation(param);
			return param;
			}

			toAssignable(node, isLHS = false) {
			switch (node.type) {
			case "TSTypeCastExpression":
			return super.toAssignable(this.typeCastToParameter(node), isLHS);

			case "TSParameterProperty":
			return super.toAssignable(node, isLHS);

			case "TSAsExpression":
			case "TSNonNullExpression":
			case "TSTypeAssertion":
			node.expression = this.toAssignable(node.expression, isLHS);
			return node;

			default:
			return super.toAssignable(node, isLHS);
			}
			}

			checkLVal(expr, contextDescription, ...args) {
			switch (expr.type) {
			case "TSTypeCastExpression":
			return;

			case "TSParameterProperty":
			this.checkLVal(expr.parameter, "parameter property", ...args);
			return;

			case "TSAsExpression":
			case "TSNonNullExpression":
			case "TSTypeAssertion":
			this.checkLVal(expr.expression, contextDescription, ...args);
			return;

			default:
			super.checkLVal(expr, contextDescription, ...args);
			return;
			}
			}

			parseBindingAtom() {
			switch (this.state.type) {
			case types._this:
			return this.parseIdentifier(true);

			default:
			return super.parseBindingAtom();
			}
			}

			parseMaybeDecoratorArguments(expr) {
			if (this.isRelational("<")) {
			const typeArguments = this.tsParseTypeArguments();

			if (this.match(types.parenL)) {
			const call = super.parseMaybeDecoratorArguments(expr);
			call.typeParameters = typeArguments;
			return call;
			}

			this.unexpected(this.state.start, types.parenL);
			}

			return super.parseMaybeDecoratorArguments(expr);
			}

			isClassMethod() {
			return this.isRelational("<") \|\| super.isClassMethod();
			}

			isClassProperty() {
			return this.match(types.bang) \|\| this.match(types.colon) \|\| super.isClassProperty();
			}

			parseMaybeDefault(...args) {
			const node = super.parseMaybeDefault(...args);

			if (node.type === "AssignmentPattern" && node.typeAnnotation && node.right.start < node.typeAnnotation.start) {
			this.raise(node.typeAnnotation.start, TSErrors.TypeAnnotationAfterAssign);
			}

			return node;
			}

			getTokenFromCode(code) {
			if (this.state.inType && (code === 62 \|\| code === 60)) {
			return this.finishOp(types.relational, 1);
			} else {
			return super.getTokenFromCode(code);
			}
			}

			reScan_lt_gt() {
			if (this.match(types.relational)) {
			const code = this.input.charCodeAt(this.state.start);

			if (code === 60 \|\| code === 62) {
			this.state.pos -= 1;
			this.readToken_lt_gt(code);
			}
			}
			}

			toAssignableList(exprList) {
			for (let i = 0; i < exprList.length; i++) {
			const expr = exprList[i];
			if (!expr) continue;

			switch (expr.type) {
			case "TSTypeCastExpression":
			exprList[i] = this.typeCastToParameter(expr);
			break;

			case "TSAsExpression":
			case "TSTypeAssertion":
			if (!this.state.maybeInArrowParameters) {
			exprList[i] = this.typeCastToParameter(expr);
			} else {
			this.raise(expr.start, TSErrors.UnexpectedTypeCastInParameter);
			}

			break;
			}
			}

			return super.toAssignableList(...arguments);
			}

			typeCastToParameter(node) {
			node.expression.typeAnnotation = node.typeAnnotation;
			this.resetEndLocation(node.expression, node.typeAnnotation.end, node.typeAnnotation.loc.end);
			return node.expression;
			}

			shouldParseArrow() {
			return this.match(types.colon) \|\| super.shouldParseArrow();
			}

			shouldParseAsyncArrow() {
			return this.match(types.colon) \|\| super.shouldParseAsyncArrow();
			}

			canHaveLeadingDecorator() {
			return super.canHaveLeadingDecorator() \|\| this.isAbstractClass();
			}

			jsxParseOpeningElementAfterName(node) {
			if (this.isRelational("<")) {
			const typeArguments = this.tsTryParseAndCatch(() => this.tsParseTypeArguments());
			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 && firstParam.type === "Identifier" && firstParam.name === "this";
			return hasContextParam ? baseCount + 1 : baseCount;
			}

			parseCatchClauseParam() {
			const param = super.parseCatchClauseParam();
			const type = this.tsTryParseTypeAnnotation();

			if (type) {
			param.typeAnnotation = type;
			this.resetEndLocation(param);
			}

			return param;
			}

			tsInDeclareContext(cb) {
			const oldIsDeclareContext = this.state.isDeclareContext;
			this.state.isDeclareContext = true;

			try {
			return cb();
			} finally {
			this.state.isDeclareContext = oldIsDeclareContext;
			}
			}

			});

			types.placeholder = new TokenType("%%", {
			startsExpr: true
			});
			var placeholders = (superClass => class extends superClass {
			parsePlaceholder(expectedNode) {
			if (this.match(types.placeholder)) {
			const node = this.startNode();
			this.next();
			this.assertNoSpace("Unexpected space in placeholder.");
			node.name = super.parseIdentifier(true);
			this.assertNoSpace("Unexpected space in placeholder.");
			this.expect(types.placeholder);
			return this.finishPlaceholder(node, expectedNode);
			}
			}

			finishPlaceholder(node, expectedNode) {
			const isFinished = !!(node.expectedNode && node.type === "Placeholder");
			node.expectedNode = expectedNode;
			return isFinished ? node : this.finishNode(node, "Placeholder");
			}

			getTokenFromCode(code) {
			if (code === 37 && this.input.charCodeAt(this.state.pos + 1) === 37) {
			return this.finishOp(types.placeholder, 2);
			}

			return super.getTokenFromCode(...arguments);
			}

			parseExprAtom() {
			return this.parsePlaceholder("Expression") \|\| super.parseExprAtom(...arguments);
			}

			parseIdentifier() {
			return this.parsePlaceholder("Identifier") \|\| super.parseIdentifier(...arguments);
			}

			checkReservedWord(word) {
			if (word !== undefined) super.checkReservedWord(...arguments);
			}

			parseBindingAtom() {
			return this.parsePlaceholder("Pattern") \|\| super.parseBindingAtom(...arguments);
			}

			checkLVal(expr) {
			if (expr.type !== "Placeholder") super.checkLVal(...arguments);
			}

			toAssignable(node) {
			if (node && node.type === "Placeholder" && node.expectedNode === "Expression") {
			node.expectedNode = "Pattern";
			return node;
			}

			return super.toAssignable(...arguments);
			}

			verifyBreakContinue(node) {
			if (node.label && node.label.type === "Placeholder") return;
			super.verifyBreakContinue(...arguments);
			}

			parseExpressionStatement(node, expr) {
			if (expr.type !== "Placeholder" \|\| expr.extra && expr.extra.parenthesized) {
			return super.parseExpressionStatement(...arguments);
			}

			if (this.match(types.colon)) {
			const stmt = node;
			stmt.label = this.finishPlaceholder(expr, "Identifier");
			this.next();
			stmt.body = this.parseStatement("label");
			return this.finishNode(stmt, "LabeledStatement");
			}

			this.semicolon();
			node.name = expr.name;
			return this.finishPlaceholder(node, "Statement");
			}

			parseBlock() {
			return this.parsePlaceholder("BlockStatement") \|\| super.parseBlock(...arguments);
			}

			parseFunctionId() {
			return this.parsePlaceholder("Identifier") \|\| super.parseFunctionId(...arguments);
			}

			parseClass(node, isStatement, optionalId) {
			const type = isStatement ? "ClassDeclaration" : "ClassExpression";
			this.next();
			this.takeDecorators(node);
			const oldStrict = this.state.strict;
			const placeholder = this.parsePlaceholder("Identifier");

			if (placeholder) {
			if (this.match(types._extends) \|\| this.match(types.placeholder) \|\| this.match(types.braceL)) {
			node.id = placeholder;
			} else if (optionalId \|\| !isStatement) {
			node.id = null;
			node.body = this.finishPlaceholder(placeholder, "ClassBody");
			return this.finishNode(node, type);
			} else {
			this.unexpected(null, "A class name is required");
			}
			} else {
			this.parseClassId(node, isStatement, optionalId);
			}

			this.parseClassSuper(node);
			node.body = this.parsePlaceholder("ClassBody") \|\| this.parseClassBody(!!node.superClass, oldStrict);
			return this.finishNode(node, type);
			}

			parseExport(node) {
			const placeholder = this.parsePlaceholder("Identifier");
			if (!placeholder) return super.parseExport(...arguments);

			if (!this.isContextual("from") && !this.match(types.comma)) {
			node.specifiers = [];
			node.source = null;
			node.declaration = this.finishPlaceholder(placeholder, "Declaration");
			return this.finishNode(node, "ExportNamedDeclaration");
			}

			this.expectPlugin("exportDefaultFrom");
			const specifier = this.startNode();
			specifier.exported = placeholder;
			node.specifiers = [this.finishNode(specifier, "ExportDefaultSpecifier")];
			return super.parseExport(node);
			}

			isExportDefaultSpecifier() {
			if (this.match(types._default)) {
			const next = this.nextTokenStart();

			if (this.isUnparsedContextual(next, "from")) {
			if (this.input.startsWith(types.placeholder.label, this.nextTokenStartSince(next + 4))) {
			return true;
			}
			}
			}

			return super.isExportDefaultSpecifier();
			}

			maybeParseExportDefaultSpecifier(node) {
			if (node.specifiers && node.specifiers.length > 0) {
			return true;
			}

			return super.maybeParseExportDefaultSpecifier(...arguments);
			}

			checkExport(node) {
			const {
			specifiers
			} = node;

			if (specifiers == null ? void 0 : specifiers.length) {
			node.specifiers = specifiers.filter(node => node.exported.type === "Placeholder");
			}

			super.checkExport(node);
			node.specifiers = specifiers;
			}

			parseImport(node) {
			const placeholder = this.parsePlaceholder("Identifier");
			if (!placeholder) return super.parseImport(...arguments);
			node.specifiers = [];

			if (!this.isContextual("from") && !this.match(types.comma)) {
			node.source = this.finishPlaceholder(placeholder, "StringLiteral");
			this.semicolon();
			return this.finishNode(node, "ImportDeclaration");
			}

			const specifier = this.startNodeAtNode(placeholder);
			specifier.local = placeholder;
			this.finishNode(specifier, "ImportDefaultSpecifier");
			node.specifiers.push(specifier);

			if (this.eat(types.comma)) {
			const hasStarImport = this.maybeParseStarImportSpecifier(node);
			if (!hasStarImport) this.parseNamedImportSpecifiers(node);
			}

			this.expectContextual("from");
			node.source = this.parseImportSource();
			this.semicolon();
			return this.finishNode(node, "ImportDeclaration");
			}

			parseImportSource() {
			return this.parsePlaceholder("StringLiteral") \|\| super.parseImportSource(...arguments);
			}

			});

			var v8intrinsic = (superClass => class extends superClass {
			parseV8Intrinsic() {
			if (this.match(types.modulo)) {
			const v8IntrinsicStart = this.state.start;
			const node = this.startNode();
			this.eat(types.modulo);

			if (this.match(types.name)) {
			const name = this.parseIdentifierName(this.state.start);
			const identifier = this.createIdentifier(node, name);
			identifier.type = "V8IntrinsicIdentifier";

			if (this.match(types.parenL)) {
			return identifier;
			}
			}

			this.unexpected(v8IntrinsicStart);
			}
			}

			parseExprAtom() {
			return this.parseV8Intrinsic() \|\| super.parseExprAtom(...arguments);
			}

			});

			function hasPlugin(plugins, name) {
			return plugins.some(plugin => {
			if (Array.isArray(plugin)) {
			return plugin[0] === name;
			} else {
			return plugin === name;
			}
			});
			}
			function getPluginOption(plugins, name, option) {
			const plugin = plugins.find(plugin => {
			if (Array.isArray(plugin)) {
			return plugin[0] === name;
			} else {
			return plugin === name;
			}
			});

			if (plugin && Array.isArray(plugin)) {
			return plugin[1][option];
			}

			return null;
			}
			const PIPELINE_PROPOSALS = ["minimal", "smart", "fsharp"];
			const RECORD_AND_TUPLE_SYNTAX_TYPES = ["hash", "bar"];
			function validatePlugins(plugins) {
			if (hasPlugin(plugins, "decorators")) {
			if (hasPlugin(plugins, "decorators-legacy")) {
			throw new Error("Cannot use the decorators and decorators-legacy plugin together");
			}

			const decoratorsBeforeExport = getPluginOption(plugins, "decorators", "decoratorsBeforeExport");

			if (decoratorsBeforeExport == null) {
			throw new Error("The 'decorators' plugin requires a 'decoratorsBeforeExport' option," + " whose value must be a boolean. If you are migrating from" + " Babylon/Babel 6 or want to use the old decorators proposal, you" + " should use the 'decorators-legacy' plugin instead of 'decorators'.");
			} else if (typeof decoratorsBeforeExport !== "boolean") {
			throw new Error("'decoratorsBeforeExport' must be a boolean.");
			}
			}

			if (hasPlugin(plugins, "flow") && hasPlugin(plugins, "typescript")) {
			throw new Error("Cannot combine flow and typescript plugins.");
			}

			if (hasPlugin(plugins, "placeholders") && hasPlugin(plugins, "v8intrinsic")) {
			throw new Error("Cannot combine placeholders and v8intrinsic plugins.");
			}

			if (hasPlugin(plugins, "pipelineOperator") && !PIPELINE_PROPOSALS.includes(getPluginOption(plugins, "pipelineOperator", "proposal"))) {
			throw new Error("'pipelineOperator' requires 'proposal' option whose value should be one of: " + PIPELINE_PROPOSALS.map(p => `'${p}'`).join(", "));
			}

			if (hasPlugin(plugins, "moduleAttributes")) {
			if (hasPlugin(plugins, "importAssertions")) {
			throw new Error("Cannot combine importAssertions and moduleAttributes plugins.");
			}

			const moduleAttributesVerionPluginOption = getPluginOption(plugins, "moduleAttributes", "version");

			if (moduleAttributesVerionPluginOption !== "may-2020") {
			throw new Error("The 'moduleAttributes' plugin requires a 'version' option," + " representing the last proposal update. Currently, the" + " only supported value is 'may-2020'.");
			}
			}

			if (hasPlugin(plugins, "recordAndTuple") && !RECORD_AND_TUPLE_SYNTAX_TYPES.includes(getPluginOption(plugins, "recordAndTuple", "syntaxType"))) {
			throw new Error("'recordAndTuple' requires 'syntaxType' option whose value should be one of: " + RECORD_AND_TUPLE_SYNTAX_TYPES.map(p => `'${p}'`).join(", "));
			}
			}
			const mixinPlugins = {
			estree,
			jsx,
			flow,
			typescript,
			v8intrinsic,
			placeholders
			};
			const mixinPluginNames = Object.keys(mixinPlugins);

			const defaultOptions = {
			sourceType: "script",
			sourceFilename: undefined,
			startLine: 1,
			allowAwaitOutsideFunction: false,
			allowReturnOutsideFunction: false,
			allowImportExportEverywhere: false,
			allowSuperOutsideMethod: false,
			allowUndeclaredExports: false,
			plugins: [],
			strictMode: null,
			ranges: false,
			tokens: false,
			createParenthesizedExpressions: false,
			errorRecovery: false
			};
			function getOptions(opts) {
			const options = {};

			for (let _i = 0, _Object$keys = Object.keys(defaultOptions); _i < _Object$keys.length; _i++) {
			const key = _Object$keys[_i];
			options[key] = opts && opts[key] != null ? opts[key] : defaultOptions[key];
			}

			return options;
			}

			class State {
			constructor() {
			this.strict = void 0;
			this.curLine = void 0;
			this.startLoc = void 0;
			this.endLoc = void 0;
			this.errors = [];
			this.potentialArrowAt = -1;
			this.noArrowAt = [];
			this.noArrowParamsConversionAt = [];
			this.maybeInArrowParameters = false;
			this.inPipeline = false;
			this.inType = false;
			this.noAnonFunctionType = false;
			this.inPropertyName = false;
			this.hasFlowComment = false;
			this.isIterator = false;
			this.isDeclareContext = false;
			this.topicContext = {
			maxNumOfResolvableTopics: 0,
			maxTopicIndex: null
			};
			this.soloAwait = false;
			this.inFSharpPipelineDirectBody = false;
			this.labels = [];
			this.decoratorStack = [[]];
			this.comments = [];
			this.trailingComments = [];
			this.leadingComments = [];
			this.commentStack = [];
			this.commentPreviousNode = null;
			this.pos = 0;
			this.lineStart = 0;
			this.type = types.eof;
			this.value = null;
			this.start = 0;
			this.end = 0;
			this.lastTokEndLoc = null;
			this.lastTokStartLoc = null;
			this.lastTokStart = 0;
			this.lastTokEnd = 0;
			this.context = [types$1.braceStatement];
			this.exprAllowed = true;
			this.containsEsc = false;
			this.strictErrors = new Map();
			this.exportedIdentifiers = [];
			this.tokensLength = 0;
			}

			init(options) {
			this.strict = options.strictMode === false ? false : options.sourceType === "module";
			this.curLine = options.startLine;
			this.startLoc = this.endLoc = this.curPosition();
			}

			curPosition() {
			return new Position(this.curLine, this.pos - this.lineStart);
			}

			clone(skipArrays) {
			const state = new State();
			const keys = Object.keys(this);

			for (let i = 0, length = keys.length; i < length; i++) {
			const key = keys[i];
			let val = this[key];

			if (!skipArrays && Array.isArray(val)) {
			val = val.slice();
			}

			state[key] = val;
			}

			return state;
			}

			}

			var _isDigit = function isDigit(code) {
			return code >= 48 && code <= 57;
			};
			const VALID_REGEX_FLAGS = new Set(["g", "m", "s", "i", "y", "u"]);
			const forbiddenNumericSeparatorSiblings = {
			decBinOct: [46, 66, 69, 79, 95, 98, 101, 111],
			hex: [46, 88, 95, 120]
			};
			const allowedNumericSeparatorSiblings = {};
			allowedNumericSeparatorSiblings.bin = [48, 49];
			allowedNumericSeparatorSiblings.oct = [...allowedNumericSeparatorSiblings.bin, 50, 51, 52, 53, 54, 55];
			allowedNumericSeparatorSiblings.dec = [...allowedNumericSeparatorSiblings.oct, 56, 57];
			allowedNumericSeparatorSiblings.hex = [...allowedNumericSeparatorSiblings.dec, 65, 66, 67, 68, 69, 70, 97, 98, 99, 100, 101, 102];
			class Token {
			constructor(state) {
			this.type = state.type;
			this.value = state.value;
			this.start = state.start;
			this.end = state.end;
			this.loc = new SourceLocation(state.startLoc, state.endLoc);
			}

			}
			class Tokenizer extends ParserError {
			constructor(options, input) {
			super();
			this.isLookahead = void 0;
			this.tokens = [];
			this.state = new State();
			this.state.init(options);
			this.input = input;
			this.length = input.length;
			this.isLookahead = false;
			}

			pushToken(token) {
			this.tokens.length = this.state.tokensLength;
			this.tokens.push(token);
			++this.state.tokensLength;
			}

			next() {
			if (!this.isLookahead) {
			this.checkKeywordEscapes();

			if (this.options.tokens) {
			this.pushToken(new Token(this.state));
			}
			}

			this.state.lastTokEnd = this.state.end;
			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;
			}

			lookahead() {
			const old = this.state;
			this.state = old.clone(true);
			this.isLookahead = true;
			this.next();
			this.isLookahead = false;
			const curr = this.state;
			this.state = old;
			return curr;
			}

			nextTokenStart() {
			return this.nextTokenStartSince(this.state.pos);
			}

			nextTokenStartSince(pos) {
			skipWhiteSpace.lastIndex = pos;
			const skip = skipWhiteSpace.exec(this.input);
			return pos + skip[0].length;
			}

			lookaheadCharCode() {
			return this.input.charCodeAt(this.nextTokenStart());
			}

			setStrict(strict) {
			this.state.strict = strict;

			if (strict) {
			this.state.strictErrors.forEach((message, pos) => this.raise(pos, message));
			this.state.strictErrors.clear();
			}
			}

			curContext() {
			return this.state.context[this.state.context.length - 1];
			}

			nextToken() {
			const curContext = this.curContext();
			if (!(curContext == null ? void 0 : curContext.preserveSpace)) this.skipSpace();
			this.state.start = this.state.pos;
			this.state.startLoc = this.state.curPosition();

			if (this.state.pos >= this.length) {
			this.finishToken(types.eof);
			return;
			}

			const override = curContext == null ? void 0 : curContext.override;

			if (override) {
			override(this);
			} else {
			this.getTokenFromCode(this.input.codePointAt(this.state.pos));
			}
			}

			pushComment(block, text, start, end, startLoc, endLoc) {
			const comment = {
			type: block ? "CommentBlock" : "CommentLine",
			value: text,
			start: start,
			end: end,
			loc: new SourceLocation(startLoc, endLoc)
			};
			if (this.options.tokens) this.pushToken(comment);
			this.state.comments.push(comment);
			this.addComment(comment);
			}

			skipBlockComment() {
			const startLoc = this.state.curPosition();
			const start = this.state.pos;
			const end = this.input.indexOf("*/", this.state.pos + 2);
			if (end === -1) throw this.raise(start, ErrorMessages.UnterminatedComment);
			this.state.pos = end + 2;
			lineBreakG.lastIndex = start;
			let match;

			while ((match = lineBreakG.exec(this.input)) && match.index < this.state.pos) {
			++this.state.curLine;
			this.state.lineStart = match.index + match[0].length;
			}

			if (this.isLookahead) return;
			this.pushComment(true, this.input.slice(start + 2, end), start, this.state.pos, startLoc, this.state.curPosition());
			}

			skipLineComment(startSkip) {
			const start = this.state.pos;
			const 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;
			this.pushComment(false, this.input.slice(start + startSkip, this.state.pos), start, this.state.pos, startLoc, this.state.curPosition());
			}

			skipSpace() {
			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:
			this.skipBlockComment();
			break;

			case 47:
			this.skipLineComment(2);
			break;

			default:
			break loop;
			}

			break;

			default:
			if (isWhitespace(ch)) {
			++this.state.pos;
			} else {
			break loop;
			}

			}
			}
			}

			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);
			}

			readToken_numberSign() {
			if (this.state.pos === 0 && this.readToken_interpreter()) {
			return;
			}

			const nextPos = this.state.pos + 1;
			const next = this.input.charCodeAt(nextPos);

			if (next >= 48 && next <= 57) {
			throw this.raise(this.state.pos, ErrorMessages.UnexpectedDigitAfterHash);
			}

			if (next === 123 \|\| next === 91 && this.hasPlugin("recordAndTuple")) {
			this.expectPlugin("recordAndTuple");

			if (this.getPluginOption("recordAndTuple", "syntaxType") !== "hash") {
			throw this.raise(this.state.pos, next === 123 ? ErrorMessages.RecordExpressionHashIncorrectStartSyntaxType : ErrorMessages.TupleExpressionHashIncorrectStartSyntaxType);
			}

			if (next === 123) {
			this.finishToken(types.braceHashL);
			} else {
			this.finishToken(types.bracketHashL);
			}

			this.state.pos += 2;
			} else {
			this.finishOp(types.hash, 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(types.ellipsis);
			} else {
			++this.state.pos;
			this.finishToken(types.dot);
			}
			}

			readToken_slash() {
			if (this.state.exprAllowed && !this.state.inType) {
			++this.state.pos;
			this.readRegexp();
			return;
			}

			const next = this.input.charCodeAt(this.state.pos + 1);

			if (next === 61) {
			this.finishOp(types.assign, 2);
			} else {
			this.finishOp(types.slash, 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(types.interpreterDirective, value);
			return true;
			}

			readToken_mult_modulo(code) {
			let type = code === 42 ? types.star : types.modulo;
			let width = 1;
			let next = this.input.charCodeAt(this.state.pos + 1);
			const exprAllowed = this.state.exprAllowed;

			if (code === 42 && next === 42) {
			width++;
			next = this.input.charCodeAt(this.state.pos + 2);
			type = types.exponent;
			}

			if (next === 61 && !exprAllowed) {
			width++;
			type = types.assign;
			}

			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(types.assign, 3);
			} else {
			this.finishOp(code === 124 ? types.logicalOR : types.logicalAND, 2);
			}

			return;
			}

			if (code === 124) {
			if (next === 62) {
			this.finishOp(types.pipeline, 2);
			return;
			}

			if (this.hasPlugin("recordAndTuple") && next === 125) {
			if (this.getPluginOption("recordAndTuple", "syntaxType") !== "bar") {
			throw this.raise(this.state.pos, ErrorMessages.RecordExpressionBarIncorrectEndSyntaxType);
			}

			this.finishOp(types.braceBarR, 2);
			return;
			}

			if (this.hasPlugin("recordAndTuple") && next === 93) {
			if (this.getPluginOption("recordAndTuple", "syntaxType") !== "bar") {
			throw this.raise(this.state.pos, ErrorMessages.TupleExpressionBarIncorrectEndSyntaxType);
			}

			this.finishOp(types.bracketBarR, 2);
			return;
			}
			}

			if (next === 61) {
			this.finishOp(types.assign, 2);
			return;
			}

			this.finishOp(code === 124 ? types.bitwiseOR : types.bitwiseAND, 1);
			}

			readToken_caret() {
			const next = this.input.charCodeAt(this.state.pos + 1);

			if (next === 61) {
			this.finishOp(types.assign, 2);
			} else {
			this.finishOp(types.bitwiseXOR, 1);
			}
			}

			readToken_plus_min(code) {
			const next = this.input.charCodeAt(this.state.pos + 1);

			if (next === code) {
			if (next === 45 && !this.inModule && this.input.charCodeAt(this.state.pos + 2) === 62 && (this.state.lastTokEnd === 0 \|\| this.hasPrecedingLineBreak())) {
			this.skipLineComment(3);
			this.skipSpace();
			this.nextToken();
			return;
			}

			this.finishOp(types.incDec, 2);
			return;
			}

			if (next === 61) {
			this.finishOp(types.assign, 2);
			} else {
			this.finishOp(types.plusMin, 1);
			}
			}

			readToken_lt_gt(code) {
			const next = this.input.charCodeAt(this.state.pos + 1);
			let size = 1;

			if (next === code) {
			size = code === 62 && this.input.charCodeAt(this.state.pos + 2) === 62 ? 3 : 2;

			if (this.input.charCodeAt(this.state.pos + size) === 61) {
			this.finishOp(types.assign, size + 1);
			return;
			}

			this.finishOp(types.bitShift, size);
			return;
			}

			if (next === 33 && code === 60 && !this.inModule && this.input.charCodeAt(this.state.pos + 2) === 45 && this.input.charCodeAt(this.state.pos + 3) === 45) {
			this.skipLineComment(4);
			this.skipSpace();
			this.nextToken();
			return;
			}

			if (next === 61) {
			size = 2;
			}

			this.finishOp(types.relational, size);
			}

			readToken_eq_excl(code) {
			const next = this.input.charCodeAt(this.state.pos + 1);

			if (next === 61) {
			this.finishOp(types.equality, this.input.charCodeAt(this.state.pos + 2) === 61 ? 3 : 2);
			return;
			}

			if (code === 61 && next === 62) {
			this.state.pos += 2;
			this.finishToken(types.arrow);
			return;
			}

			this.finishOp(code === 61 ? types.eq : types.bang, 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(types.assign, 3);
			} else {
			this.finishOp(types.nullishCoalescing, 2);
			}
			} else if (next === 46 && !(next2 >= 48 && next2 <= 57)) {
			this.state.pos += 2;
			this.finishToken(types.questionDot);
			} else {
			++this.state.pos;
			this.finishToken(types.question);
			}
			}

			getTokenFromCode(code) {
			switch (code) {
			case 46:
			this.readToken_dot();
			return;

			case 40:
			++this.state.pos;
			this.finishToken(types.parenL);
			return;

			case 41:
			++this.state.pos;
			this.finishToken(types.parenR);
			return;

			case 59:
			++this.state.pos;
			this.finishToken(types.semi);
			return;

			case 44:
			++this.state.pos;
			this.finishToken(types.comma);
			return;

			case 91:
			if (this.hasPlugin("recordAndTuple") && this.input.charCodeAt(this.state.pos + 1) === 124) {
			if (this.getPluginOption("recordAndTuple", "syntaxType") !== "bar") {
			throw this.raise(this.state.pos, ErrorMessages.TupleExpressionBarIncorrectStartSyntaxType);
			}

			this.finishToken(types.bracketBarL);
			this.state.pos += 2;
			} else {
			++this.state.pos;
			this.finishToken(types.bracketL);
			}

			return;

			case 93:
			++this.state.pos;
			this.finishToken(types.bracketR);
			return;

			case 123:
			if (this.hasPlugin("recordAndTuple") && this.input.charCodeAt(this.state.pos + 1) === 124) {
			if (this.getPluginOption("recordAndTuple", "syntaxType") !== "bar") {
			throw this.raise(this.state.pos, ErrorMessages.RecordExpressionBarIncorrectStartSyntaxType);
			}

			this.finishToken(types.braceBarL);
			this.state.pos += 2;
			} else {
			++this.state.pos;
			this.finishToken(types.braceL);
			}

			return;

			case 125:
			++this.state.pos;
			this.finishToken(types.braceR);
			return;

			case 58:
			if (this.hasPlugin("functionBind") && this.input.charCodeAt(this.state.pos + 1) === 58) {
			this.finishOp(types.doubleColon, 2);
			} else {
			++this.state.pos;
			this.finishToken(types.colon);
			}

			return;

			case 63:
			this.readToken_question();
			return;

			case 96:
			++this.state.pos;
			this.finishToken(types.backQuote);
			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:
			case 62:
			this.readToken_lt_gt(code);
			return;

			case 61:
			case 33:
			this.readToken_eq_excl(code);
			return;

			case 126:
			this.finishOp(types.tilde, 1);
			return;

			case 64:
			++this.state.pos;
			this.finishToken(types.at);
			return;

			case 35:
			this.readToken_numberSign();
			return;

			case 92:
			this.readWord();
			return;

			default:
			if (isIdentifierStart(code)) {
			this.readWord();
			return;
			}

			}

			throw this.raise(this.state.pos, ErrorMessages.InvalidOrUnexpectedToken, 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 start = this.state.pos;
			let escaped, inClass;

			for (;;) {
			if (this.state.pos >= this.length) {
			throw this.raise(start, ErrorMessages.UnterminatedRegExp);
			}

			const ch = this.input.charAt(this.state.pos);

			if (lineBreak.test(ch)) {
			throw this.raise(start, ErrorMessages.UnterminatedRegExp);
			}

			if (escaped) {
			escaped = false;
			} else {
			if (ch === "[") {
			inClass = true;
			} else if (ch === "]" && inClass) {
			inClass = false;
			} else if (ch === "/" && !inClass) {
			break;
			}

			escaped = ch === "\\";
			}

			++this.state.pos;
			}

			const content = this.input.slice(start, this.state.pos);
			++this.state.pos;
			let mods = "";

			while (this.state.pos < this.length) {
			const char = this.input[this.state.pos];
			const charCode = this.input.codePointAt(this.state.pos);

			if (VALID_REGEX_FLAGS.has(char)) {
			if (mods.indexOf(char) > -1) {
			this.raise(this.state.pos + 1, ErrorMessages.DuplicateRegExpFlags);
			}
			} else if (isIdentifierChar(charCode) \|\| charCode === 92) {
			this.raise(this.state.pos + 1, ErrorMessages.MalformedRegExpFlags);
			} else {
			break;
			}

			++this.state.pos;
			mods += char;
			}

			this.finishToken(types.regexp, {
			pattern: content,
			flags: mods
			});
			}

			readInt(radix, len, forceLen, allowNumSeparator = true) {
			const start = this.state.pos;
			const forbiddenSiblings = radix === 16 ? forbiddenNumericSeparatorSiblings.hex : forbiddenNumericSeparatorSiblings.decBinOct;
			const allowedSiblings = radix === 16 ? allowedNumericSeparatorSiblings.hex : radix === 10 ? allowedNumericSeparatorSiblings.dec : radix === 8 ? allowedNumericSeparatorSiblings.oct : allowedNumericSeparatorSiblings.bin;
			let invalid = false;
			let total = 0;

			for (let i = 0, e = len == null ? Infinity : len; i < e; ++i) {
			const code = this.input.charCodeAt(this.state.pos);
			let val;

			if (code === 95) {
			const prev = this.input.charCodeAt(this.state.pos - 1);
			const next = this.input.charCodeAt(this.state.pos + 1);

			if (allowedSiblings.indexOf(next) === -1) {
			this.raise(this.state.pos, ErrorMessages.UnexpectedNumericSeparator);
			} else if (forbiddenSiblings.indexOf(prev) > -1 \|\| forbiddenSiblings.indexOf(next) > -1 \|\| Number.isNaN(next)) {
			this.raise(this.state.pos, ErrorMessages.UnexpectedNumericSeparator);
			}

			if (!allowNumSeparator) {
			this.raise(this.state.pos, ErrorMessages.NumericSeparatorInEscapeSequence);
			}

			++this.state.pos;
			continue;
			}

			if (code >= 97) {
			val = code - 97 + 10;
			} else if (code >= 65) {
			val = code - 65 + 10;
			} else if (_isDigit(code)) {
			val = code - 48;
			} else {
			val = Infinity;
			}

			if (val >= radix) {
			if (this.options.errorRecovery && val <= 9) {
			val = 0;
			this.raise(this.state.start + i + 2, ErrorMessages.InvalidDigit, radix);
			} else if (forceLen) {
			val = 0;
			invalid = true;
			} else {
			break;
			}
			}

			++this.state.pos;
			total = total * radix + val;
			}

			if (this.state.pos === start \|\| len != null && this.state.pos - start !== len \|\| invalid) {
			return null;
			}

			return total;
			}

			readRadixNumber(radix) {
			const start = this.state.pos;
			let isBigInt = false;
			this.state.pos += 2;
			const val = this.readInt(radix);

			if (val == null) {
			this.raise(this.state.start + 2, ErrorMessages.InvalidDigit, radix);
			}

			const next = this.input.charCodeAt(this.state.pos);

			if (next === 110) {
			++this.state.pos;
			isBigInt = true;
			} else if (next === 109) {
			throw this.raise(start, ErrorMessages.InvalidDecimal);
			}

			if (isIdentifierStart(this.input.codePointAt(this.state.pos))) {
			throw this.raise(this.state.pos, ErrorMessages.NumberIdentifier);
			}

			if (isBigInt) {
			const str = this.input.slice(start, this.state.pos).replace(/[_n]/g, "");
			this.finishToken(types.bigint, str);
			return;
			}

			this.finishToken(types.num, val);
			}

			readNumber(startsWithDot) {
			const start = this.state.pos;
			let isFloat = false;
			let isBigInt = false;
			let isDecimal = false;
			let hasExponent = false;
			let isOctal = false;

			if (!startsWithDot && this.readInt(10) === null) {
			this.raise(start, ErrorMessages.InvalidNumber);
			}

			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(start, ErrorMessages.StrictOctalLiteral);

			if (!this.state.strict) {
			const underscorePos = integer.indexOf("_");

			if (underscorePos > 0) {
			this.raise(underscorePos + start, ErrorMessages.ZeroDigitNumericSeparator);
			}
			}

			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(start, ErrorMessages.InvalidOrMissingExponent);
			}

			isFloat = true;
			hasExponent = true;
			next = this.input.charCodeAt(this.state.pos);
			}

			if (next === 110) {
			if (isFloat \|\| hasLeadingZero) {
			this.raise(start, ErrorMessages.InvalidBigIntLiteral);
			}

			++this.state.pos;
			isBigInt = true;
			}

			if (next === 109) {
			this.expectPlugin("decimal", this.state.pos);

			if (hasExponent \|\| hasLeadingZero) {
			this.raise(start, ErrorMessages.InvalidDecimal);
			}

			++this.state.pos;
			isDecimal = true;
			}

			if (isIdentifierStart(this.input.codePointAt(this.state.pos))) {
			throw this.raise(this.state.pos, ErrorMessages.NumberIdentifier);
			}

			const str = this.input.slice(start, this.state.pos).replace(/[_mn]/g, "");

			if (isBigInt) {
			this.finishToken(types.bigint, str);
			return;
			}

			if (isDecimal) {
			this.finishToken(types.decimal, str);
			return;
			}

			const val = isOctal ? parseInt(str, 8) : parseFloat(str);
			this.finishToken(types.num, val);
			}

			readCodePoint(throwOnInvalid) {
			const ch = this.input.charCodeAt(this.state.pos);
			let code;

			if (ch === 123) {
			const codePos = ++this.state.pos;
			code = this.readHexChar(this.input.indexOf("}", this.state.pos) - this.state.pos, true, throwOnInvalid);
			++this.state.pos;

			if (code !== null && code > 0x10ffff) {
			if (throwOnInvalid) {
			this.raise(codePos, ErrorMessages.InvalidCodePoint);
			} else {
			return null;
			}
			}
			} else {
			code = this.readHexChar(4, false, throwOnInvalid);
			}

			return code;
			}

			readString(quote) {
			let out = "",
			chunkStart = ++this.state.pos;

			for (;;) {
			if (this.state.pos >= this.length) {
			throw this.raise(this.state.start, ErrorMessages.UnterminatedString);
			}

			const ch = this.input.charCodeAt(this.state.pos);
			if (ch === quote) break;

			if (ch === 92) {
			out += this.input.slice(chunkStart, this.state.pos);
			out += this.readEscapedChar(false);
			chunkStart = this.state.pos;
			} else if (ch === 8232 \|\| ch === 8233) {
			++this.state.pos;
			++this.state.curLine;
			this.state.lineStart = this.state.pos;
			} else if (isNewLine(ch)) {
			throw this.raise(this.state.start, ErrorMessages.UnterminatedString);
			} else {
			++this.state.pos;
			}
			}

			out += this.input.slice(chunkStart, this.state.pos++);
			this.finishToken(types.string, out);
			}

			readTmplToken() {
			let out = "",
			chunkStart = this.state.pos,
			containsInvalid = false;

			for (;;) {
			if (this.state.pos >= this.length) {
			throw this.raise(this.state.start, ErrorMessages.UnterminatedTemplate);
			}

			const ch = this.input.charCodeAt(this.state.pos);

			if (ch === 96 \|\| ch === 36 && this.input.charCodeAt(this.state.pos + 1) === 123) {
			if (this.state.pos === this.state.start && this.match(types.template)) {
			if (ch === 36) {
			this.state.pos += 2;
			this.finishToken(types.dollarBraceL);
			return;
			} else {
			++this.state.pos;
			this.finishToken(types.backQuote);
			return;
			}
			}

			out += this.input.slice(chunkStart, this.state.pos);
			this.finishToken(types.template, containsInvalid ? null : out);
			return;
			}

			if (ch === 92) {
			out += this.input.slice(chunkStart, this.state.pos);
			const escaped = this.readEscapedChar(true);

			if (escaped === null) {
			containsInvalid = true;
			} else {
			out += escaped;
			}

			chunkStart = this.state.pos;
			} else if (isNewLine(ch)) {
			out += this.input.slice(chunkStart, this.state.pos);
			++this.state.pos;

			switch (ch) {
			case 13:
			if (this.input.charCodeAt(this.state.pos) === 10) {
			++this.state.pos;
			}

			case 10:
			out += "\n";
			break;

			default:
			out += String.fromCharCode(ch);
			break;
			}

			++this.state.curLine;
			this.state.lineStart = this.state.pos;
			chunkStart = this.state.pos;
			} else {
			++this.state.pos;
			}
			}
			}

			recordStrictModeErrors(pos, message) {
			if (this.state.strict && !this.state.strictErrors.has(pos)) {
			this.raise(pos, message);
			} else {
			this.state.strictErrors.set(pos, message);
			}
			}

			readEscapedChar(inTemplate) {
			const throwOnInvalid = !inTemplate;
			const ch = this.input.charCodeAt(++this.state.pos);
			++this.state.pos;

			switch (ch) {
			case 110:
			return "\n";

			case 114:
			return "\r";

			case 120:
			{
			const code = this.readHexChar(2, false, throwOnInvalid);
			return code === null ? null : String.fromCharCode(code);
			}

			case 117:
			{
			const code = this.readCodePoint(throwOnInvalid);
			return code === null ? null : String.fromCodePoint(code);
			}

			case 116:
			return "\t";

			case 98:
			return "\b";

			case 118:
			return "\u000b";

			case 102:
			return "\f";

			case 13:
			if (this.input.charCodeAt(this.state.pos) === 10) {
			++this.state.pos;
			}

			case 10:
			this.state.lineStart = this.state.pos;
			++this.state.curLine;

			case 8232:
			case 8233:
			return "";

			case 56:
			case 57:
			if (inTemplate) {
			return null;
			} else {
			this.recordStrictModeErrors(this.state.pos - 1, ErrorMessages.StrictNumericEscape);
			}

			default:
			if (ch >= 48 && ch <= 55) {
			const codePos = this.state.pos - 1;
			const match = this.input.substr(this.state.pos - 1, 3).match(/^[0-7]+/);
			let octalStr = match[0];
			let octal = parseInt(octalStr, 8);

			if (octal > 255) {
			octalStr = octalStr.slice(0, -1);
			octal = parseInt(octalStr, 8);
			}

			this.state.pos += octalStr.length - 1;
			const next = this.input.charCodeAt(this.state.pos);

			if (octalStr !== "0" \|\| next === 56 \|\| next === 57) {
			if (inTemplate) {
			return null;
			} else {
			this.recordStrictModeErrors(codePos, ErrorMessages.StrictNumericEscape);
			}
			}

			return String.fromCharCode(octal);
			}

			return String.fromCharCode(ch);
			}
			}

			readHexChar(len, forceLen, throwOnInvalid) {
			const codePos = this.state.pos;
			const n = this.readInt(16, len, forceLen, false);

			if (n === null) {
			if (throwOnInvalid) {
			this.raise(codePos, ErrorMessages.InvalidEscapeSequence);
			} else {
			this.state.pos = codePos - 1;
			}
			}

			return n;
			}

			readWord1() {
			let word = "";
			this.state.containsEsc = false;
			const start = this.state.pos;
			let chunkStart = this.state.pos;

			while (this.state.pos < this.length) {
			const ch = this.input.codePointAt(this.state.pos);

			if (isIdentifierChar(ch)) {
			this.state.pos += ch <= 0xffff ? 1 : 2;
			} else if (this.state.isIterator && ch === 64) {
			++this.state.pos;
			} else if (ch === 92) {
			this.state.containsEsc = true;
			word += this.input.slice(chunkStart, this.state.pos);
			const escStart = this.state.pos;
			const identifierCheck = this.state.pos === start ? isIdentifierStart : isIdentifierChar;

			if (this.input.charCodeAt(++this.state.pos) !== 117) {
			this.raise(this.state.pos, ErrorMessages.MissingUnicodeEscape);
			continue;
			}

			++this.state.pos;
			const esc = this.readCodePoint(true);

			if (esc !== null) {
			if (!identifierCheck(esc)) {
			this.raise(escStart, ErrorMessages.EscapedCharNotAnIdentifier);
			}

			word += String.fromCodePoint(esc);
			}

			chunkStart = this.state.pos;
			} else {
			break;
			}
			}

			return word + this.input.slice(chunkStart, this.state.pos);
			}

			isIterator(word) {
			return word === "@@iterator" \|\| word === "@@asyncIterator";
			}

			readWord() {
			const word = this.readWord1();
			const type = keywords.get(word) \|\| types.name;

			if (this.state.isIterator && (!this.isIterator(word) \|\| !this.state.inType)) {
			this.raise(this.state.pos, ErrorMessages.InvalidIdentifier, word);
			}

			this.finishToken(type, word);
			}

			checkKeywordEscapes() {
			const kw = this.state.type.keyword;

			if (kw && this.state.containsEsc) {
			this.raise(this.state.start, ErrorMessages.InvalidEscapedReservedWord, kw);
			}
			}

			braceIsBlock(prevType) {
			const parent = this.curContext();

			if (parent === types$1.functionExpression \|\| parent === types$1.functionStatement) {
			return true;
			}

			if (prevType === types.colon && (parent === types$1.braceStatement \|\| parent === types$1.braceExpression)) {
			return !parent.isExpr;
			}

			if (prevType === types._return \|\| prevType === types.name && this.state.exprAllowed) {
			return this.hasPrecedingLineBreak();
			}

			if (prevType === types._else \|\| prevType === types.semi \|\| prevType === types.eof \|\| prevType === types.parenR \|\| prevType === types.arrow) {
			return true;
			}

			if (prevType === types.braceL) {
			return parent === types$1.braceStatement;
			}

			if (prevType === types._var \|\| prevType === types._const \|\| prevType === types.name) {
			return false;
			}

			if (prevType === types.relational) {
			return true;
			}

			return !this.state.exprAllowed;
			}

			updateContext(prevType) {
			const type = this.state.type;
			let update;

			if (type.keyword && (prevType === types.dot \|\| prevType === types.questionDot)) {
			this.state.exprAllowed = false;
			} else if (update = type.updateContext) {
			update.call(this, prevType);
			} else {
			this.state.exprAllowed = type.beforeExpr;
			}
			}

			}

			class UtilParser extends Tokenizer {
			addExtra(node, key, val) {
			if (!node) return;
			const extra = node.extra = node.extra \|\| {};
			extra[key] = val;
			}

			isRelational(op) {
			return this.match(types.relational) && this.state.value === op;
			}

			expectRelational(op) {
			if (this.isRelational(op)) {
			this.next();
			} else {
			this.unexpected(null, types.relational);
			}
			}

			isContextual(name) {
			return this.match(types.name) && this.state.value === name && !this.state.containsEsc;
			}

			isUnparsedContextual(nameStart, name) {
			const nameEnd = nameStart + name.length;
			return this.input.slice(nameStart, nameEnd) === name && (nameEnd === this.input.length \|\| !isIdentifierChar(this.input.charCodeAt(nameEnd)));
			}

			isLookaheadContextual(name) {
			const next = this.nextTokenStart();
			return this.isUnparsedContextual(next, name);
			}

			eatContextual(name) {
			return this.isContextual(name) && this.eat(types.name);
			}

			expectContextual(name, message) {
			if (!this.eatContextual(name)) this.unexpected(null, message);
			}

			canInsertSemicolon() {
			return this.match(types.eof) \|\| this.match(types.braceR) \|\| this.hasPrecedingLineBreak();
			}

			hasPrecedingLineBreak() {
			return lineBreak.test(this.input.slice(this.state.lastTokEnd, this.state.start));
			}

			isLineTerminator() {
			return this.eat(types.semi) \|\| this.canInsertSemicolon();
			}

			semicolon() {
			if (!this.isLineTerminator()) this.unexpected(null, types.semi);
			}

			expect(type, pos) {
			this.eat(type) \|\| this.unexpected(pos, type);
			}

			assertNoSpace(message = "Unexpected space.") {
			if (this.state.start > this.state.lastTokEnd) {
			this.raise(this.state.lastTokEnd, message);
			}
			}

			unexpected(pos, messageOrType = "Unexpected token") {
			if (typeof messageOrType !== "string") {
			messageOrType = `Unexpected token, expected "${messageOrType.label}"`;
			}

			throw this.raise(pos != null ? pos : this.state.start, messageOrType);
			}

			expectPlugin(name, pos) {
			if (!this.hasPlugin(name)) {
			throw this.raiseWithData(pos != null ? pos : this.state.start, {
			missingPlugin: [name]
			}, `This experimental syntax requires enabling the parser plugin: '${name}'`);
			}

			return true;
			}

			expectOnePlugin(names, pos) {
			if (!names.some(n => this.hasPlugin(n))) {
			throw this.raiseWithData(pos != null ? pos : this.state.start, {
			missingPlugin: names
			}, `This experimental syntax requires enabling one of the following parser plugin(s): '${names.join(", ")}'`);
			}
			}

			tryParse(fn, oldState = this.state.clone()) {
			const abortSignal = {
			node: null
			};

			try {
			const node = fn((node = null) => {
			abortSignal.node = node;
			throw abortSignal;
			});

			if (this.state.errors.length > oldState.errors.length) {
			const failState = this.state;
			this.state = oldState;
			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 {
			shorthandAssign,
			doubleProto
			} = refExpressionErrors;
			if (!andThrow) return shorthandAssign >= 0 \|\| doubleProto >= 0;

			if (shorthandAssign >= 0) {
			this.unexpected(shorthandAssign);
			}

			if (doubleProto >= 0) {
			this.raise(doubleProto, ErrorMessages.DuplicateProto);
			}
			}

			isLiteralPropertyName() {
			return this.match(types.name) \|\| !!this.state.type.keyword \|\| this.match(types.string) \|\| this.match(types.num) \|\| this.match(types.bigint) \|\| this.match(types.decimal);
			}

			isPrivateName(node) {
			return node.type === "PrivateName";
			}

			getPrivateNameSV(node) {
			return node.id.name;
			}

			hasPropertyAsPrivateName(node) {
			return (node.type === "MemberExpression" \|\| node.type === "OptionalMemberExpression") && this.isPrivateName(node.property);
			}

			isOptionalChain(node) {
			return node.type === "OptionalMemberExpression" \|\| node.type === "OptionalCallExpression";
			}

			isObjectProperty(node) {
			return node.type === "ObjectProperty";
			}

			isObjectMethod(node) {
			return node.type === "ObjectMethod";
			}

			}
			class ExpressionErrors {
			constructor() {
			this.shorthandAssign = -1;
			this.doubleProto = -1;
			}

			}

			class Node {
			constructor(parser, pos, loc) {
			this.type = void 0;
			this.start = void 0;
			this.end = void 0;
			this.loc = void 0;
			this.range = void 0;
			this.leadingComments = void 0;
			this.trailingComments = void 0;
			this.innerComments = void 0;
			this.extra = void 0;
			this.type = "";
			this.start = pos;
			this.end = 0;
			this.loc = new SourceLocation(loc);
			if (parser == null ? void 0 : parser.options.ranges) this.range = [pos, 0];
			if (parser == null ? void 0 : parser.filename) this.loc.filename = parser.filename;
			}

			__clone() {
			const newNode = new Node();
			const keys = Object.keys(this);

			for (let i = 0, length = keys.length; i < length; i++) {
			const key = keys[i];

			if (key !== "leadingComments" && key !== "trailingComments" && key !== "innerComments") {
			newNode[key] = this[key];
			}
			}

			return newNode;
			}

			}

			class NodeUtils extends UtilParser {
			startNode() {
			return new Node(this, this.state.start, this.state.startLoc);
			}

			startNodeAt(pos, loc) {
			return new Node(this, pos, loc);
			}

			startNodeAtNode(type) {
			return this.startNodeAt(type.start, type.loc.start);
			}

			finishNode(node, type) {
			return this.finishNodeAt(node, type, this.state.lastTokEnd, this.state.lastTokEndLoc);
			}

			finishNodeAt(node, type, pos, loc) {

			node.type = type;
			node.end = pos;
			node.loc.end = loc;
			if (this.options.ranges) node.range[1] = pos;
			this.processComment(node);
			return node;
			}

			resetStartLocation(node, start, startLoc) {
			node.start = start;
			node.loc.start = startLoc;
			if (this.options.ranges) node.range[0] = start;
			}

			resetEndLocation(node, end = this.state.lastTokEnd, endLoc = this.state.lastTokEndLoc) {
			node.end = end;
			node.loc.end = endLoc;
			if (this.options.ranges) node.range[1] = end;
			}

			resetStartLocationFromNode(node, locationNode) {
			this.resetStartLocation(node, locationNode.start, locationNode.loc.start);
			}

			}

			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$extra = node.extra) == null ? void 0 : _node$extra.parenthesized)) {
			parenthesized = unwrapParenthesizedExpression(node);

			if (isLHS) {
			if (parenthesized.type === "Identifier") {
			this.expressionScope.recordParenthesizedIdentifierError(node.start, ErrorMessages.InvalidParenthesizedAssignment);
			} else if (parenthesized.type !== "MemberExpression") {
			this.raise(node.start, ErrorMessages.InvalidParenthesizedAssignment);
			}
			} else {
			this.raise(node.start, ErrorMessages.InvalidParenthesizedAssignment);
			}
			}

			switch (node.type) {
			case "Identifier":
			case "ObjectPattern":
			case "ArrayPattern":
			case "AssignmentPattern":
			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$extra2 = node.extra) == null ? void 0 : _node$extra2.trailingComma)) {
			this.raiseRestNotLast(node.extra.trailingComma);
			}
			}

			break;

			case "ObjectProperty":
			this.toAssignable(node.value, isLHS);
			break;

			case "SpreadElement":
			{
			this.checkToRestConversion(node);
			node.type = "RestElement";
			const arg = node.argument;
			this.toAssignable(arg, isLHS);
			break;
			}

			case "ArrayExpression":
			node.type = "ArrayPattern";
			this.toAssignableList(node.elements, (_node$extra3 = node.extra) == null ? void 0 : _node$extra3.trailingComma, isLHS);
			break;

			case "AssignmentExpression":
			if (node.operator !== "=") {
			this.raise(node.left.end, ErrorMessages.MissingEqInAssignment);
			}

			node.type = "AssignmentPattern";
			delete node.operator;
			this.toAssignable(node.left, isLHS);
			break;

			case "ParenthesizedExpression":
			this.toAssignable(parenthesized, isLHS);
			break;
			}

			return node;
			}

			toAssignableObjectExpressionProp(prop, isLast, isLHS) {
			if (prop.type === "ObjectMethod") {
			const error = prop.kind === "get" \|\| prop.kind === "set" ? ErrorMessages.PatternHasAccessor : ErrorMessages.PatternHasMethod;
			this.raise(prop.key.start, error);
			} else if (prop.type === "SpreadElement" && !isLast) {
			this.raiseRestNotLast(prop.start);
			} else {
			this.toAssignable(prop, isLHS);
			}
			}

			toAssignableList(exprList, trailingCommaPos, isLHS) {
			let end = exprList.length;

			if (end) {
			const last = exprList[end - 1];

			if ((last == null ? void 0 : last.type) === "RestElement") {
			--end;
			} else if ((last == null ? void 0 : last.type) === "SpreadElement") {
			last.type = "RestElement";
			let arg = last.argument;
			this.toAssignable(arg, isLHS);
			arg = unwrapParenthesizedExpression(arg);

			if (arg.type !== "Identifier" && arg.type !== "MemberExpression" && arg.type !== "ArrayPattern" && arg.type !== "ObjectPattern") {
			this.unexpected(arg.start);
			}

			if (trailingCommaPos) {
			this.raiseTrailingCommaAfterRest(trailingCommaPos);
			}

			--end;
			}
			}

			for (let i = 0; i < end; i++) {
			const elt = exprList[i];

			if (elt) {
			this.toAssignable(elt, isLHS);

			if (elt.type === "RestElement") {
			this.raiseRestNotLast(elt.start);
			}
			}
			}

			return exprList;
			}

			toReferencedList(exprList, isParenthesizedExpr) {
			return exprList;
			}

			toReferencedListDeep(exprList, isParenthesizedExpr) {
			this.toReferencedList(exprList, isParenthesizedExpr);

			for (let _i = 0; _i < exprList.length; _i++) {
			const expr = exprList[_i];

			if ((expr == null ? void 0 : expr.type) === "ArrayExpression") {
			this.toReferencedListDeep(expr.elements);
			}
			}
			}

			parseSpread(refExpressionErrors, refNeedsArrowPos) {
			const node = this.startNode();
			this.next();
			node.argument = this.parseMaybeAssignAllowIn(refExpressionErrors, undefined, refNeedsArrowPos);
			return this.finishNode(node, "SpreadElement");
			}

			parseRestBinding() {
			const node = this.startNode();
			this.next();
			node.argument = this.parseBindingAtom();
			return this.finishNode(node, "RestElement");
			}

			parseBindingAtom() {
			switch (this.state.type) {
			case types.bracketL:
			{
			const node = this.startNode();
			this.next();
			node.elements = this.parseBindingList(types.bracketR, 93, true);
			return this.finishNode(node, "ArrayPattern");
			}

			case types.braceL:
			return this.parseObjectLike(types.braceR, true);
			}

			return this.parseIdentifier();
			}

			parseBindingList(close, closeCharCode, allowEmpty, allowModifiers) {
			const elts = [];
			let first = true;

			while (!this.eat(close)) {
			if (first) {
			first = false;
			} else {
			this.expect(types.comma);
			}

			if (allowEmpty && this.match(types.comma)) {
			elts.push(null);
			} else if (this.eat(close)) {
			break;
			} else if (this.match(types.ellipsis)) {
			elts.push(this.parseAssignableListItemTypes(this.parseRestBinding()));
			this.checkCommaAfterRest(closeCharCode);
			this.expect(close);
			break;
			} else {
			const decorators = [];

			if (this.match(types.at) && this.hasPlugin("decorators")) {
			this.raise(this.state.start, ErrorMessages.UnsupportedParameterDecorator);
			}

			while (this.match(types.at)) {
			decorators.push(this.parseDecorator());
			}

			elts.push(this.parseAssignableListItem(allowModifiers, decorators));
			}
			}

			return elts;
			}

			parseAssignableListItem(allowModifiers, decorators) {
			const left = this.parseMaybeDefault();
			this.parseAssignableListItemTypes(left);
			const elt = this.parseMaybeDefault(left.start, left.loc.start, left);

			if (decorators.length) {
			left.decorators = decorators;
			}

			return elt;
			}

			parseAssignableListItemTypes(param) {
			return param;
			}

			parseMaybeDefault(startPos, startLoc, left) {
			var _startLoc, _startPos, _left;

			startLoc = (_startLoc = startLoc) != null ? _startLoc : this.state.startLoc;
			startPos = (_startPos = startPos) != null ? _startPos : this.state.start;
			left = (_left = left) != null ? _left : this.parseBindingAtom();
			if (!this.eat(types.eq)) return left;
			const node = this.startNodeAt(startPos, startLoc);
			node.left = left;
			node.right = this.parseMaybeAssignAllowIn();
			return this.finishNode(node, "AssignmentPattern");
			}

			checkLVal(expr, contextDescription, bindingType = BIND_NONE, checkClashes, disallowLetBinding, strictModeChanged = false) {
			switch (expr.type) {
			case "Identifier":
			{
			const {
			name
			} = expr;

			if (this.state.strict && (strictModeChanged ? isStrictBindReservedWord(name, this.inModule) : isStrictBindOnlyReservedWord(name))) {
			this.raise(expr.start, bindingType === BIND_NONE ? ErrorMessages.StrictEvalArguments : ErrorMessages.StrictEvalArgumentsBinding, name);
			}

			if (checkClashes) {
			if (checkClashes.has(name)) {
			this.raise(expr.start, ErrorMessages.ParamDupe);
			} else {
			checkClashes.add(name);
			}
			}

			if (disallowLetBinding && name === "let") {
			this.raise(expr.start, ErrorMessages.LetInLexicalBinding);
			}

			if (!(bindingType & BIND_NONE)) {
			this.scope.declareName(name, bindingType, expr.start);
			}

			break;
			}

			case "MemberExpression":
			if (bindingType !== BIND_NONE) {
			this.raise(expr.start, ErrorMessages.InvalidPropertyBindingPattern);
			}

			break;

			case "ObjectPattern":
			for (let _i2 = 0, _expr$properties = expr.properties; _i2 < _expr$properties.length; _i2++) {
			let prop = _expr$properties[_i2];
			if (this.isObjectProperty(prop)) prop = prop.value;else if (this.isObjectMethod(prop)) continue;
			this.checkLVal(prop, "object destructuring pattern", bindingType, checkClashes, disallowLetBinding);
			}

			break;

			case "ArrayPattern":
			for (let _i3 = 0, _expr$elements = expr.elements; _i3 < _expr$elements.length; _i3++) {
			const elem = _expr$elements[_i3];

			if (elem) {
			this.checkLVal(elem, "array destructuring pattern", bindingType, checkClashes, disallowLetBinding);
			}
			}

			break;

			case "AssignmentPattern":
			this.checkLVal(expr.left, "assignment pattern", bindingType, checkClashes);
			break;

			case "RestElement":
			this.checkLVal(expr.argument, "rest element", bindingType, checkClashes);
			break;

			case "ParenthesizedExpression":
			this.checkLVal(expr.expression, "parenthesized expression", bindingType, checkClashes);
			break;

			default:
			{
			this.raise(expr.start, bindingType === BIND_NONE ? ErrorMessages.InvalidLhs : ErrorMessages.InvalidLhsBinding, contextDescription);
			}
			}
			}

			checkToRestConversion(node) {
			if (node.argument.type !== "Identifier" && node.argument.type !== "MemberExpression") {
			this.raise(node.argument.start, ErrorMessages.InvalidRestAssignmentPattern);
			}
			}

			checkCommaAfterRest(close) {
			if (this.match(types.comma)) {
			if (this.lookaheadCharCode() === close) {
			this.raiseTrailingCommaAfterRest(this.state.start);
			} else {
			this.raiseRestNotLast(this.state.start);
			}
			}
			}

			raiseRestNotLast(pos) {
			throw this.raise(pos, ErrorMessages.ElementAfterRest);
			}

			raiseTrailingCommaAfterRest(pos) {
			this.raise(pos, ErrorMessages.RestTrailingComma);
			}

			}

			const kExpression = 0,
			kMaybeArrowParameterDeclaration = 1,
			kMaybeAsyncArrowParameterDeclaration = 2,
			kParameterDeclaration = 3;

			class ExpressionScope {
			constructor(type = kExpression) {
			this.type = void 0;
			this.type = type;
			}

			canBeArrowParameterDeclaration() {
			return this.type === kMaybeAsyncArrowParameterDeclaration \|\| this.type === kMaybeArrowParameterDeclaration;
			}

			isCertainlyParameterDeclaration() {
			return this.type === kParameterDeclaration;
			}

			}

			class ArrowHeadParsingScope extends ExpressionScope {
			constructor(type) {
			super(type);
			this.errors = new Map();
			}

			recordDeclarationError(pos, message) {
			this.errors.set(pos, message);
			}

			clearDeclarationError(pos) {
			this.errors.delete(pos);
			}

			iterateErrors(iterator) {
			this.errors.forEach(iterator);
			}

			}

			class ExpressionScopeHandler {
			constructor(raise) {
			this.stack = [new ExpressionScope()];
			this.raise = raise;
			}

			enter(scope) {
			this.stack.push(scope);
			}

			exit() {
			this.stack.pop();
			}

			recordParameterInitializerError(pos, message) {
			const {
			stack
			} = this;
			let i = stack.length - 1;
			let scope = stack[i];

			while (!scope.isCertainlyParameterDeclaration()) {
			if (scope.canBeArrowParameterDeclaration()) {
			scope.recordDeclarationError(pos, message);
			} else {
			return;
			}

			scope = stack[--i];
			}

			this.raise(pos, message);
			}

			recordParenthesizedIdentifierError(pos, message) {
			const {
			stack
			} = this;
			const scope = stack[stack.length - 1];

			if (scope.isCertainlyParameterDeclaration()) {
			this.raise(pos, message);
			} else if (scope.canBeArrowParameterDeclaration()) {
			scope.recordDeclarationError(pos, message);
			} else {
			return;
			}
			}

			recordAsyncArrowParametersError(pos, message) {
			const {
			stack
			} = this;
			let i = stack.length - 1;
			let scope = stack[i];

			while (scope.canBeArrowParameterDeclaration()) {
			if (scope.type === kMaybeAsyncArrowParameterDeclaration) {
			scope.recordDeclarationError(pos, message);
			}

			scope = stack[--i];
			}
			}

			validateAsPattern() {
			const {
			stack
			} = this;
			const currentScope = stack[stack.length - 1];
			if (!currentScope.canBeArrowParameterDeclaration()) return;
			currentScope.iterateErrors((message, pos) => {
			this.raise(pos, message);
			let i = stack.length - 2;
			let scope = stack[i];

			while (scope.canBeArrowParameterDeclaration()) {
			scope.clearDeclarationError(pos);
			scope = stack[--i];
			}
			});
			}

			}
			function newParameterDeclarationScope() {
			return new ExpressionScope(kParameterDeclaration);
			}
			function newArrowHeadScope() {
			return new ArrowHeadParsingScope(kMaybeArrowParameterDeclaration);
			}
			function newAsyncArrowScope() {
			return new ArrowHeadParsingScope(kMaybeAsyncArrowParameterDeclaration);
			}
			function newExpressionScope() {
			return new ExpressionScope();
			}

			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(key.start, ErrorMessages.RecordNoProto);
			return;
			}

			if (protoRef.used) {
			if (refExpressionErrors) {
			if (refExpressionErrors.doubleProto === -1) {
			refExpressionErrors.doubleProto = key.start;
			}
			} else {
			this.raise(key.start, ErrorMessages.DuplicateProto);
			}
			}

			protoRef.used = true;
			}
			}

			shouldExitDescending(expr, potentialArrowAt) {
			return expr.type === "ArrowFunctionExpression" && expr.start === potentialArrowAt;
			}

			getExpression() {
			let paramFlags = PARAM;

			if (this.hasPlugin("topLevelAwait") && this.inModule) {
			paramFlags \|= PARAM_AWAIT;
			}

			this.scope.enter(SCOPE_PROGRAM);
			this.prodParam.enter(paramFlags);
			this.nextToken();
			const expr = this.parseExpression();

			if (!this.match(types.eof)) {
			this.unexpected();
			}

			expr.comments = this.state.comments;
			expr.errors = this.state.errors;
			return expr;
			}

			parseExpression(disallowIn, refExpressionErrors) {
			if (disallowIn) {
			return this.disallowInAnd(() => this.parseExpressionBase(refExpressionErrors));
			}

			return this.allowInAnd(() => this.parseExpressionBase(refExpressionErrors));
			}

			parseExpressionBase(refExpressionErrors) {
			const startPos = this.state.start;
			const startLoc = this.state.startLoc;
			const expr = this.parseMaybeAssign(refExpressionErrors);

			if (this.match(types.comma)) {
			const node = this.startNodeAt(startPos, startLoc);
			node.expressions = [expr];

			while (this.eat(types.comma)) {
			node.expressions.push(this.parseMaybeAssign(refExpressionErrors));
			}

			this.toReferencedList(node.expressions);
			return this.finishNode(node, "SequenceExpression");
			}

			return expr;
			}

			parseMaybeAssignDisallowIn(refExpressionErrors, afterLeftParse, refNeedsArrowPos) {
			return this.disallowInAnd(() => this.parseMaybeAssign(refExpressionErrors, afterLeftParse, refNeedsArrowPos));
			}

			parseMaybeAssignAllowIn(refExpressionErrors, afterLeftParse, refNeedsArrowPos) {
			return this.allowInAnd(() => this.parseMaybeAssign(refExpressionErrors, afterLeftParse, refNeedsArrowPos));
			}

			parseMaybeAssign(refExpressionErrors, afterLeftParse, refNeedsArrowPos) {
			const startPos = this.state.start;
			const startLoc = this.state.startLoc;

			if (this.isContextual("yield")) {
			if (this.prodParam.hasYield) {
			this.state.exprAllowed = true;
			let left = this.parseYield();

			if (afterLeftParse) {
			left = afterLeftParse.call(this, left, startPos, startLoc);
			}

			return left;
			}
			}

			let ownExpressionErrors;

			if (refExpressionErrors) {
			ownExpressionErrors = false;
			} else {
			refExpressionErrors = new ExpressionErrors();
			ownExpressionErrors = true;
			}

			if (this.match(types.parenL) \|\| this.match(types.name)) {
			this.state.potentialArrowAt = this.state.start;
			}

			let left = this.parseMaybeConditional(refExpressionErrors, refNeedsArrowPos);

			if (afterLeftParse) {
			left = afterLeftParse.call(this, left, startPos, startLoc);
			}

			if (this.state.type.isAssign) {
			const node = this.startNodeAt(startPos, startLoc);
			const operator = this.state.value;
			node.operator = operator;

			if (this.match(types.eq)) {
			node.left = this.toAssignable(left, true);
			refExpressionErrors.doubleProto = -1;
			} else {
			node.left = left;
			}

			if (refExpressionErrors.shorthandAssign >= node.left.start) {
			refExpressionErrors.shorthandAssign = -1;
			}

			this.checkLVal(left, "assignment expression");
			this.next();
			node.right = this.parseMaybeAssign();
			return this.finishNode(node, "AssignmentExpression");
			} else if (ownExpressionErrors) {
			this.checkExpressionErrors(refExpressionErrors, true);
			}

			return left;
			}

			parseMaybeConditional(refExpressionErrors, refNeedsArrowPos) {
			const startPos = this.state.start;
			const startLoc = this.state.startLoc;
			const potentialArrowAt = this.state.potentialArrowAt;
			const expr = this.parseExprOps(refExpressionErrors);

			if (this.shouldExitDescending(expr, potentialArrowAt)) {
			return expr;
			}

			return this.parseConditional(expr, startPos, startLoc, refNeedsArrowPos);
			}

			parseConditional(expr, startPos, startLoc, refNeedsArrowPos) {
			if (this.eat(types.question)) {
			const node = this.startNodeAt(startPos, startLoc);
			node.test = expr;
			node.consequent = this.parseMaybeAssignAllowIn();
			this.expect(types.colon);
			node.alternate = this.parseMaybeAssign();
			return this.finishNode(node, "ConditionalExpression");
			}

			return expr;
			}

			parseExprOps(refExpressionErrors) {
			const startPos = this.state.start;
			const startLoc = this.state.startLoc;
			const potentialArrowAt = this.state.potentialArrowAt;
			const expr = this.parseMaybeUnary(refExpressionErrors);

			if (this.shouldExitDescending(expr, potentialArrowAt)) {
			return expr;
			}

			return this.parseExprOp(expr, startPos, startLoc, -1);
			}

			parseExprOp(left, leftStartPos, leftStartLoc, minPrec) {
			let prec = this.state.type.binop;

			if (prec != null && (this.prodParam.hasIn \|\| !this.match(types._in))) {
			if (prec > minPrec) {
			const op = this.state.type;

			if (op === types.pipeline) {
			this.expectPlugin("pipelineOperator");

			if (this.state.inFSharpPipelineDirectBody) {
			return left;
			}

			this.state.inPipeline = true;
			this.checkPipelineAtInfixOperator(left, leftStartPos);
			}

			const node = this.startNodeAt(leftStartPos, leftStartLoc);
			node.left = left;
			node.operator = this.state.value;

			if (op === types.exponent && left.type === "UnaryExpression" && (this.options.createParenthesizedExpressions \|\| !(left.extra && left.extra.parenthesized))) {
			this.raise(left.argument.start, ErrorMessages.UnexpectedTokenUnaryExponentiation);
			}

			const logical = op === types.logicalOR \|\| op === types.logicalAND;
			const coalesce = op === types.nullishCoalescing;

			if (coalesce) {
			prec = types.logicalAND.binop;
			}

			this.next();

			if (op === types.pipeline && this.getPluginOption("pipelineOperator", "proposal") === "minimal") {
			if (this.match(types.name) && this.state.value === "await" && this.prodParam.hasAwait) {
			throw this.raise(this.state.start, ErrorMessages.UnexpectedAwaitAfterPipelineBody);
			}
			}

			node.right = this.parseExprOpRightExpr(op, prec);
			this.finishNode(node, logical \|\| coalesce ? "LogicalExpression" : "BinaryExpression");
			const nextOp = this.state.type;

			if (coalesce && (nextOp === types.logicalOR \|\| nextOp === types.logicalAND) \|\| logical && nextOp === types.nullishCoalescing) {
			throw this.raise(this.state.start, ErrorMessages.MixingCoalesceWithLogical);
			}

			return this.parseExprOp(node, leftStartPos, leftStartLoc, minPrec);
			}
			}

			return left;
			}

			parseExprOpRightExpr(op, prec) {
			const startPos = this.state.start;
			const startLoc = this.state.startLoc;

			switch (op) {
			case types.pipeline:
			switch (this.getPluginOption("pipelineOperator", "proposal")) {
			case "smart":
			return this.withTopicPermittingContext(() => {
			return this.parseSmartPipelineBody(this.parseExprOpBaseRightExpr(op, prec), startPos, startLoc);
			});

			case "fsharp":
			return this.withSoloAwaitPermittingContext(() => {
			return this.parseFSharpPipelineBody(prec);
			});
			}

			default:
			return this.parseExprOpBaseRightExpr(op, prec);
			}
			}

			parseExprOpBaseRightExpr(op, prec) {
			const startPos = this.state.start;
			const startLoc = this.state.startLoc;
			return this.parseExprOp(this.parseMaybeUnary(), startPos, startLoc, op.rightAssociative ? prec - 1 : prec);
			}

			parseMaybeUnary(refExpressionErrors) {
			if (this.isContextual("await") && this.isAwaitAllowed()) {
			return this.parseAwait();
			}

			const update = this.match(types.incDec);
			const node = this.startNode();

			if (this.state.type.prefix) {
			node.operator = this.state.value;
			node.prefix = true;

			if (this.match(types._throw)) {
			this.expectPlugin("throwExpressions");
			}

			const isDelete = this.match(types._delete);
			this.next();
			node.argument = this.parseMaybeUnary();
			this.checkExpressionErrors(refExpressionErrors, true);

			if (this.state.strict && isDelete) {
			const arg = node.argument;

			if (arg.type === "Identifier") {
			this.raise(node.start, ErrorMessages.StrictDelete);
			} else if (this.hasPropertyAsPrivateName(arg)) {
			this.raise(node.start, ErrorMessages.DeletePrivateField);
			}
			}

			if (!update) {
			return this.finishNode(node, "UnaryExpression");
			}
			}

			return this.parseUpdate(node, update, refExpressionErrors);
			}

			parseUpdate(node, update, refExpressionErrors) {
			if (update) {
			this.checkLVal(node.argument, "prefix operation");
			return this.finishNode(node, "UpdateExpression");
			}

			const startPos = this.state.start;
			const startLoc = this.state.startLoc;
			let expr = this.parseExprSubscripts(refExpressionErrors);
			if (this.checkExpressionErrors(refExpressionErrors, false)) return expr;

			while (this.state.type.postfix && !this.canInsertSemicolon()) {
			const node = this.startNodeAt(startPos, startLoc);
			node.operator = this.state.value;
			node.prefix = false;
			node.argument = expr;
			this.checkLVal(expr, "postfix operation");
			this.next();
			expr = this.finishNode(node, "UpdateExpression");
			}

			return expr;
			}

			parseExprSubscripts(refExpressionErrors) {
			const startPos = this.state.start;
			const startLoc = this.state.startLoc;
			const potentialArrowAt = this.state.potentialArrowAt;
			const expr = this.parseExprAtom(refExpressionErrors);

			if (this.shouldExitDescending(expr, potentialArrowAt)) {
			return expr;
			}

			return this.parseSubscripts(expr, startPos, startLoc);
			}

			parseSubscripts(base, startPos, startLoc, noCalls) {
			const state = {
			optionalChainMember: false,
			maybeAsyncArrow: this.atPossibleAsyncArrow(base),
			stop: false
			};

			do {
			base = this.parseSubscript(base, startPos, startLoc, noCalls, state);
			state.maybeAsyncArrow = false;
			} while (!state.stop);

			return base;
			}

			parseSubscript(base, startPos, startLoc, noCalls, state) {
			if (!noCalls && this.eat(types.doubleColon)) {
			return this.parseBind(base, startPos, startLoc, noCalls, state);
			} else if (this.match(types.backQuote)) {
			return this.parseTaggedTemplateExpression(base, startPos, startLoc, state);
			}

			let optional = false;

			if (this.match(types.questionDot)) {
			if (noCalls && this.lookaheadCharCode() === 40) {
			state.stop = true;
			return base;
			}

			state.optionalChainMember = optional = true;
			this.next();
			}

			if (!noCalls && this.match(types.parenL)) {
			return this.parseCoverCallAndAsyncArrowHead(base, startPos, startLoc, state, optional);
			} else if (optional \|\| this.match(types.bracketL) \|\| this.eat(types.dot)) {
			return this.parseMember(base, startPos, startLoc, state, optional);
			} else {
			state.stop = true;
			return base;
			}
			}

			parseMember(base, startPos, startLoc, state, optional) {
			const node = this.startNodeAt(startPos, startLoc);
			const computed = this.eat(types.bracketL);
			node.object = base;
			node.computed = computed;
			const property = computed ? this.parseExpression() : this.parseMaybePrivateName(true);

			if (this.isPrivateName(property)) {
			if (node.object.type === "Super") {
			this.raise(startPos, ErrorMessages.SuperPrivateField);
			}

			this.classScope.usePrivateName(this.getPrivateNameSV(property), property.start);
			}

			node.property = property;

			if (computed) {
			this.expect(types.bracketR);
			}

			if (state.optionalChainMember) {
			node.optional = optional;
			return this.finishNode(node, "OptionalMemberExpression");
			} else {
			return this.finishNode(node, "MemberExpression");
			}
			}

			parseBind(base, startPos, startLoc, noCalls, state) {
			const node = this.startNodeAt(startPos, startLoc);
			node.object = base;
			node.callee = this.parseNoCallExpr();
			state.stop = true;
			return this.parseSubscripts(this.finishNode(node, "BindExpression"), startPos, startLoc, noCalls);
			}

			parseCoverCallAndAsyncArrowHead(base, startPos, startLoc, state, optional) {
			const oldMaybeInArrowParameters = this.state.maybeInArrowParameters;
			this.state.maybeInArrowParameters = true;
			this.next();
			let node = this.startNodeAt(startPos, startLoc);
			node.callee = base;

			if (state.maybeAsyncArrow) {
			this.expressionScope.enter(newAsyncArrowScope());
			}

			if (state.optionalChainMember) {
			node.optional = optional;
			}

			if (optional) {
			node.arguments = this.parseCallExpressionArguments(types.parenR, false);
			} else {
			node.arguments = this.parseCallExpressionArguments(types.parenR, state.maybeAsyncArrow, base.type === "Import", base.type !== "Super", node);
			}

			this.finishCallExpression(node, state.optionalChainMember);

			if (state.maybeAsyncArrow && this.shouldParseAsyncArrow() && !optional) {
			state.stop = true;
			this.expressionScope.validateAsPattern();
			this.expressionScope.exit();
			node = this.parseAsyncArrowFromCallExpression(this.startNodeAt(startPos, startLoc), node);
			} else {
			if (state.maybeAsyncArrow) {
			this.expressionScope.exit();
			}

			this.toReferencedArguments(node);
			}

			this.state.maybeInArrowParameters = oldMaybeInArrowParameters;
			return node;
			}

			toReferencedArguments(node, isParenthesizedExpr) {
			this.toReferencedListDeep(node.arguments, isParenthesizedExpr);
			}

			parseTaggedTemplateExpression(base, startPos, startLoc, state) {
			const node = this.startNodeAt(startPos, startLoc);
			node.tag = base;
			node.quasi = this.parseTemplate(true);

			if (state.optionalChainMember) {
			this.raise(startPos, ErrorMessages.OptionalChainingNoTemplate);
			}

			return this.finishNode(node, "TaggedTemplateExpression");
			}

			atPossibleAsyncArrow(base) {
			return base.type === "Identifier" && base.name === "async" && this.state.lastTokEnd === base.end && !this.canInsertSemicolon() && base.end - base.start === 5 && base.start === this.state.potentialArrowAt;
			}

			finishCallExpression(node, optional) {
			if (node.callee.type === "Import") {
			if (node.arguments.length === 2) {
			if (!this.hasPlugin("moduleAttributes")) {
			this.expectPlugin("importAssertions");
			}
			}

			if (node.arguments.length === 0 \|\| node.arguments.length > 2) {
			this.raise(node.start, ErrorMessages.ImportCallArity, this.hasPlugin("importAssertions") \|\| this.hasPlugin("moduleAttributes") ? "one or two arguments" : "one argument");
			} else {
			for (let _i = 0, _node$arguments = node.arguments; _i < _node$arguments.length; _i++) {
			const arg = _node$arguments[_i];

			if (arg.type === "SpreadElement") {
			this.raise(arg.start, ErrorMessages.ImportCallSpreadArgument);
			}
			}
			}
			}

			return this.finishNode(node, optional ? "OptionalCallExpression" : "CallExpression");
			}

			parseCallExpressionArguments(close, possibleAsyncArrow, dynamicImport, allowPlaceholder, nodeForExtra) {
			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(types.comma);

			if (this.match(close)) {
			if (dynamicImport && !this.hasPlugin("importAssertions") && !this.hasPlugin("moduleAttributes")) {
			this.raise(this.state.lastTokStart, ErrorMessages.ImportCallArgumentTrailingComma);
			}

			if (nodeForExtra) {
			this.addExtra(nodeForExtra, "trailingComma", this.state.lastTokStart);
			}

			this.next();
			break;
			}
			}

			elts.push(this.parseExprListItem(false, possibleAsyncArrow ? new ExpressionErrors() : undefined, possibleAsyncArrow ? {
			start: 0
			} : undefined, allowPlaceholder));
			}

			this.state.inFSharpPipelineDirectBody = oldInFSharpPipelineDirectBody;
			return elts;
			}

			shouldParseAsyncArrow() {
			return this.match(types.arrow) && !this.canInsertSemicolon();
			}

			parseAsyncArrowFromCallExpression(node, call) {
			var _call$extra;

			this.expect(types.arrow);
			this.parseArrowExpression(node, call.arguments, true, (_call$extra = call.extra) == null ? void 0 : _call$extra.trailingComma);
			return node;
			}

			parseNoCallExpr() {
			const startPos = this.state.start;
			const startLoc = this.state.startLoc;
			return this.parseSubscripts(this.parseExprAtom(), startPos, startLoc, true);
			}

			parseExprAtom(refExpressionErrors) {
			if (this.state.type === types.slash) this.readRegexp();
			const canBeArrow = this.state.potentialArrowAt === this.state.start;
			let node;

			switch (this.state.type) {
			case types._super:
			return this.parseSuper();

			case types._import:
			node = this.startNode();
			this.next();

			if (this.match(types.dot)) {
			return this.parseImportMetaProperty(node);
			}

			if (!this.match(types.parenL)) {
			this.raise(this.state.lastTokStart, ErrorMessages.UnsupportedImport);
			}

			return this.finishNode(node, "Import");

			case types._this:
			node = this.startNode();
			this.next();
			return this.finishNode(node, "ThisExpression");

			case types.name:
			{
			const containsEsc = this.state.containsEsc;
			const id = this.parseIdentifier();

			if (!containsEsc && id.name === "async" && !this.canInsertSemicolon()) {
			if (this.match(types._function)) {
			const last = this.state.context.length - 1;

			if (this.state.context[last] !== types$1.functionStatement) {
			throw new Error("Internal error");
			}

			this.state.context[last] = types$1.functionExpression;
			this.next();
			return this.parseFunction(this.startNodeAtNode(id), undefined, true);
			} else if (this.match(types.name)) {
			return this.parseAsyncArrowUnaryFunction(id);
			}
			}

			if (canBeArrow && this.match(types.arrow) && !this.canInsertSemicolon()) {
			this.next();
			return this.parseArrowExpression(this.startNodeAtNode(id), [id], false);
			}

			return id;
			}

			case types._do:
			{
			return this.parseDo();
			}

			case types.regexp:
			{
			const value = this.state.value;
			node = this.parseLiteral(value.value, "RegExpLiteral");
			node.pattern = value.pattern;
			node.flags = value.flags;
			return node;
			}

			case types.num:
			return this.parseLiteral(this.state.value, "NumericLiteral");

			case types.bigint:
			return this.parseLiteral(this.state.value, "BigIntLiteral");

			case types.decimal:
			return this.parseLiteral(this.state.value, "DecimalLiteral");

			case types.string:
			return this.parseLiteral(this.state.value, "StringLiteral");

			case types._null:
			node = this.startNode();
			this.next();
			return this.finishNode(node, "NullLiteral");

			case types._true:
			case types._false:
			return this.parseBooleanLiteral();

			case types.parenL:
			return this.parseParenAndDistinguishExpression(canBeArrow);

			case types.bracketBarL:
			case types.bracketHashL:
			{
			return this.parseArrayLike(this.state.type === types.bracketBarL ? types.bracketBarR : types.bracketR, false, true, refExpressionErrors);
			}

			case types.bracketL:
			{
			return this.parseArrayLike(types.bracketR, true, false, refExpressionErrors);
			}

			case types.braceBarL:
			case types.braceHashL:
			{
			return this.parseObjectLike(this.state.type === types.braceBarL ? types.braceBarR : types.braceR, false, true, refExpressionErrors);
			}

			case types.braceL:
			{
			return this.parseObjectLike(types.braceR, false, false, refExpressionErrors);
			}

			case types._function:
			return this.parseFunctionOrFunctionSent();

			case types.at:
			this.parseDecorators();

			case types._class:
			node = this.startNode();
			this.takeDecorators(node);
			return this.parseClass(node, false);

			case types._new:
			return this.parseNewOrNewTarget();

			case types.backQuote:
			return this.parseTemplate(false);

			case types.doubleColon:
			{
			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(callee.start, ErrorMessages.UnsupportedBind);
			}
			}

			case types.hash:
			{
			if (this.state.inPipeline) {
			node = this.startNode();

			if (this.getPluginOption("pipelineOperator", "proposal") !== "smart") {
			this.raise(node.start, ErrorMessages.PrimaryTopicRequiresSmartPipeline);
			}

			this.next();

			if (!this.primaryTopicReferenceIsAllowedInCurrentTopicContext()) {
			this.raise(node.start, ErrorMessages.PrimaryTopicNotAllowed);
			}

			this.registerTopicReference();
			return this.finishNode(node, "PipelinePrimaryTopicReference");
			}

			const nextCh = this.input.codePointAt(this.state.end);

			if (isIdentifierStart(nextCh) \|\| nextCh === 92) {
			const start = this.state.start;
			node = this.parseMaybePrivateName(true);

			if (this.match(types._in)) {
			this.expectPlugin("privateIn");
			this.classScope.usePrivateName(node.id.name, node.start);
			} else if (this.hasPlugin("privateIn")) {
			this.raise(this.state.start, ErrorMessages.PrivateInExpectedIn, node.id.name);
			} else {
			throw this.unexpected(start);
			}

			return node;
			}
			}

			case types.relational:
			{
			if (this.state.value === "<") {
			const lookaheadCh = this.input.codePointAt(this.nextTokenStart());

			if (isIdentifierStart(lookaheadCh) \|\| lookaheadCh === 62) {
			this.expectOnePlugin(["jsx", "flow", "typescript"]);
			}
			}
			}

			default:
			throw this.unexpected();
			}
			}

			parseAsyncArrowUnaryFunction(id) {
			const node = this.startNodeAtNode(id);
			this.prodParam.enter(functionFlags(true, this.prodParam.hasYield));
			const params = [this.parseIdentifier()];
			this.prodParam.exit();

			if (this.hasPrecedingLineBreak()) {
			this.raise(this.state.pos, ErrorMessages.LineTerminatorBeforeArrow);
			}

			this.expect(types.arrow);
			this.parseArrowExpression(node, params, true);
			return node;
			}

			parseDo() {
			this.expectPlugin("doExpressions");
			const node = this.startNode();
			this.next();
			const oldLabels = this.state.labels;
			this.state.labels = [];
			node.body = this.parseBlock();
			this.state.labels = oldLabels;
			return this.finishNode(node, "DoExpression");
			}

			parseSuper() {
			const node = this.startNode();
			this.next();

			if (this.match(types.parenL) && !this.scope.allowDirectSuper && !this.options.allowSuperOutsideMethod) {
			this.raise(node.start, ErrorMessages.SuperNotAllowed);
			} else if (!this.scope.allowSuper && !this.options.allowSuperOutsideMethod) {
			this.raise(node.start, ErrorMessages.UnexpectedSuper);
			}

			if (!this.match(types.parenL) && !this.match(types.bracketL) && !this.match(types.dot)) {
			this.raise(node.start, ErrorMessages.UnsupportedSuper);
			}

			return this.finishNode(node, "Super");
			}

			parseBooleanLiteral() {
			const node = this.startNode();
			node.value = this.match(types._true);
			this.next();
			return this.finishNode(node, "BooleanLiteral");
			}

			parseMaybePrivateName(isPrivateNameAllowed) {
			const isPrivate = this.match(types.hash);

			if (isPrivate) {
			this.expectOnePlugin(["classPrivateProperties", "classPrivateMethods"]);

			if (!isPrivateNameAllowed) {
			this.raise(this.state.pos, ErrorMessages.UnexpectedPrivateField);
			}

			const node = this.startNode();
			this.next();
			this.assertNoSpace("Unexpected space between # and identifier");
			node.id = this.parseIdentifier(true);
			return this.finishNode(node, "PrivateName");
			} else {
			return this.parseIdentifier(true);
			}
			}

			parseFunctionOrFunctionSent() {
			const node = this.startNode();
			this.next();

			if (this.prodParam.hasYield && this.match(types.dot)) {
			const meta = this.createIdentifier(this.startNodeAtNode(node), "function");
			this.next();
			return this.parseMetaProperty(node, meta, "sent");
			}

			return this.parseFunction(node);
			}

			parseMetaProperty(node, meta, propertyName) {
			node.meta = meta;

			if (meta.name === "function" && propertyName === "sent") {
			if (this.isContextual(propertyName)) {
			this.expectPlugin("functionSent");
			} else if (!this.hasPlugin("functionSent")) {
			this.unexpected();
			}
			}

			const containsEsc = this.state.containsEsc;
			node.property = this.parseIdentifier(true);

			if (node.property.name !== propertyName \|\| containsEsc) {
			this.raise(node.property.start, ErrorMessages.UnsupportedMetaProperty, meta.name, propertyName);
			}

			return this.finishNode(node, "MetaProperty");
			}

			parseImportMetaProperty(node) {
			const id = this.createIdentifier(this.startNodeAtNode(node), "import");
			this.next();

			if (this.isContextual("meta")) {
			if (!this.inModule) {
			this.raiseWithData(id.start, {
			code: "BABEL_PARSER_SOURCETYPE_MODULE_REQUIRED"
			}, ErrorMessages.ImportMetaOutsideModule);
			}

			this.sawUnambiguousESM = true;
			}

			return this.parseMetaProperty(node, id, "meta");
			}

			parseLiteral(value, type, startPos, startLoc) {
			startPos = startPos \|\| this.state.start;
			startLoc = startLoc \|\| this.state.startLoc;
			const node = this.startNodeAt(startPos, startLoc);
			this.addExtra(node, "rawValue", value);
			this.addExtra(node, "raw", this.input.slice(startPos, this.state.end));
			node.value = value;
			this.next();
			return this.finishNode(node, type);
			}

			parseParenAndDistinguishExpression(canBeArrow) {
			const startPos = this.state.start;
			const startLoc = this.state.startLoc;
			let val;
			this.next();
			this.expressionScope.enter(newArrowHeadScope());
			const oldMaybeInArrowParameters = this.state.maybeInArrowParameters;
			const oldInFSharpPipelineDirectBody = this.state.inFSharpPipelineDirectBody;
			this.state.maybeInArrowParameters = true;
			this.state.inFSharpPipelineDirectBody = false;
			const innerStartPos = this.state.start;
			const innerStartLoc = this.state.startLoc;
			const exprList = [];
			const refExpressionErrors = new ExpressionErrors();
			const refNeedsArrowPos = {
			start: 0
			};
			let first = true;
			let spreadStart;
			let optionalCommaStart;

			while (!this.match(types.parenR)) {
			if (first) {
			first = false;
			} else {
			this.expect(types.comma, refNeedsArrowPos.start \|\| null);

			if (this.match(types.parenR)) {
			optionalCommaStart = this.state.start;
			break;
			}
			}

			if (this.match(types.ellipsis)) {
			const spreadNodeStartPos = this.state.start;
			const spreadNodeStartLoc = this.state.startLoc;
			spreadStart = this.state.start;
			exprList.push(this.parseParenItem(this.parseRestBinding(), spreadNodeStartPos, spreadNodeStartLoc));
			this.checkCommaAfterRest(41);
			break;
			} else {
			exprList.push(this.parseMaybeAssignAllowIn(refExpressionErrors, this.parseParenItem, refNeedsArrowPos));
			}
			}

			const innerEndPos = this.state.lastTokEnd;
			const innerEndLoc = this.state.lastTokEndLoc;
			this.expect(types.parenR);
			this.state.maybeInArrowParameters = oldMaybeInArrowParameters;
			this.state.inFSharpPipelineDirectBody = oldInFSharpPipelineDirectBody;
			let arrowNode = this.startNodeAt(startPos, startLoc);

			if (canBeArrow && this.shouldParseArrow() && (arrowNode = this.parseArrow(arrowNode))) {
			this.expressionScope.validateAsPattern();
			this.expressionScope.exit();
			this.parseArrowExpression(arrowNode, exprList, false);
			return arrowNode;
			}

			this.expressionScope.exit();

			if (!exprList.length) {
			this.unexpected(this.state.lastTokStart);
			}

			if (optionalCommaStart) this.unexpected(optionalCommaStart);
			if (spreadStart) this.unexpected(spreadStart);
			this.checkExpressionErrors(refExpressionErrors, true);
			if (refNeedsArrowPos.start) this.unexpected(refNeedsArrowPos.start);
			this.toReferencedListDeep(exprList, true);

			if (exprList.length > 1) {
			val = this.startNodeAt(innerStartPos, innerStartLoc);
			val.expressions = exprList;
			this.finishNodeAt(val, "SequenceExpression", innerEndPos, innerEndLoc);
			} else {
			val = exprList[0];
			}

			if (!this.options.createParenthesizedExpressions) {
			this.addExtra(val, "parenthesized", true);
			this.addExtra(val, "parenStart", startPos);
			return val;
			}

			const parenExpression = this.startNodeAt(startPos, startLoc);
			parenExpression.expression = val;
			this.finishNode(parenExpression, "ParenthesizedExpression");
			return parenExpression;
			}

			shouldParseArrow() {
			return !this.canInsertSemicolon();
			}

			parseArrow(node) {
			if (this.eat(types.arrow)) {
			return node;
			}
			}

			parseParenItem(node, startPos, startLoc) {
			return node;
			}

			parseNewOrNewTarget() {
			const node = this.startNode();
			this.next();

			if (this.match(types.dot)) {
			const meta = this.createIdentifier(this.startNodeAtNode(node), "new");
			this.next();
			const metaProp = this.parseMetaProperty(node, meta, "target");

			if (!this.scope.inNonArrowFunction && !this.scope.inClass) {
			let error = ErrorMessages.UnexpectedNewTarget;

			if (this.hasPlugin("classProperties")) {
			error += " or class properties";
			}

			this.raise(metaProp.start, error);
			}

			return metaProp;
			}

			return this.parseNew(node);
			}

			parseNew(node) {
			node.callee = this.parseNoCallExpr();

			if (node.callee.type === "Import") {
			this.raise(node.callee.start, ErrorMessages.ImportCallNotNewExpression);
			} else if (this.isOptionalChain(node.callee)) {
			this.raise(this.state.lastTokEnd, ErrorMessages.OptionalChainingNoNew);
			} else if (this.eat(types.questionDot)) {
			this.raise(this.state.start, ErrorMessages.OptionalChainingNoNew);
			}

			this.parseNewArguments(node);
			return this.finishNode(node, "NewExpression");
			}

			parseNewArguments(node) {
			if (this.eat(types.parenL)) {
			const args = this.parseExprList(types.parenR);
			this.toReferencedList(args);
			node.arguments = args;
			} else {
			node.arguments = [];
			}
			}

			parseTemplateElement(isTagged) {
			const elem = this.startNode();

			if (this.state.value === null) {
			if (!isTagged) {
			this.raise(this.state.start + 1, ErrorMessages.InvalidEscapeSequenceTemplate);
			}
			}

			elem.value = {
			raw: this.input.slice(this.state.start, this.state.end).replace(/\r\n?/g, "\n"),
			cooked: this.state.value
			};
			this.next();
			elem.tail = this.match(types.backQuote);
			return this.finishNode(elem, "TemplateElement");
			}

			parseTemplate(isTagged) {
			const node = this.startNode();
			this.next();
			node.expressions = [];
			let curElt = this.parseTemplateElement(isTagged);
			node.quasis = [curElt];

			while (!curElt.tail) {
			this.expect(types.dollarBraceL);
			node.expressions.push(this.parseTemplateSubstitution());
			this.expect(types.braceR);
			node.quasis.push(curElt = this.parseTemplateElement(isTagged));
			}

			this.next();
			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(types.comma);

			if (this.match(close)) {
			this.addExtra(node, "trailingComma", this.state.lastTokStart);
			break;
			}
			}

			const prop = this.parsePropertyDefinition(isPattern, refExpressionErrors);

			if (!isPattern) {
			this.checkProto(prop, isRecord, propHash, refExpressionErrors);
			}

			if (isRecord && !this.isObjectProperty(prop) && prop.type !== "SpreadElement") {
			this.raise(prop.start, ErrorMessages.InvalidRecordProperty);
			}

			if (prop.shorthand) {
			this.addExtra(prop, "shorthand", true);
			}

			node.properties.push(prop);
			}

			this.state.exprAllowed = false;
			this.next();
			this.state.inFSharpPipelineDirectBody = oldInFSharpPipelineDirectBody;
			let type = "ObjectExpression";

			if (isPattern) {
			type = "ObjectPattern";
			} else if (isRecord) {
			type = "RecordExpression";
			}

			return this.finishNode(node, type);
			}

			maybeAsyncOrAccessorProp(prop) {
			return !prop.computed && prop.key.type === "Identifier" && (this.isLiteralPropertyName() \|\| this.match(types.bracketL) \|\| this.match(types.star));
			}

			parsePropertyDefinition(isPattern, refExpressionErrors) {
			let decorators = [];

			if (this.match(types.at)) {
			if (this.hasPlugin("decorators")) {
			this.raise(this.state.start, ErrorMessages.UnsupportedPropertyDecorator);
			}

			while (this.match(types.at)) {
			decorators.push(this.parseDecorator());
			}
			}

			const prop = this.startNode();
			let isGenerator = false;
			let isAsync = false;
			let isAccessor = false;
			let startPos;
			let startLoc;

			if (this.match(types.ellipsis)) {
			if (decorators.length) this.unexpected();

			if (isPattern) {
			this.next();
			prop.argument = this.parseIdentifier();
			this.checkCommaAfterRest(125);
			return this.finishNode(prop, "RestElement");
			}

			return this.parseSpread();
			}

			if (decorators.length) {
			prop.decorators = decorators;
			decorators = [];
			}

			prop.method = false;

			if (isPattern \|\| refExpressionErrors) {
			startPos = this.state.start;
			startLoc = this.state.startLoc;
			}

			if (!isPattern) {
			isGenerator = this.eat(types.star);
			}

			const containsEsc = this.state.containsEsc;
			const key = this.parsePropertyName(prop, false);

			if (!isPattern && !isGenerator && !containsEsc && this.maybeAsyncOrAccessorProp(prop)) {
			const keyName = key.name;

			if (keyName === "async" && !this.hasPrecedingLineBreak()) {
			isAsync = true;
			isGenerator = this.eat(types.star);
			this.parsePropertyName(prop, false);
			}

			if (keyName === "get" \|\| keyName === "set") {
			isAccessor = true;
			prop.kind = keyName;

			if (this.match(types.star)) {
			isGenerator = true;
			this.raise(this.state.pos, ErrorMessages.AccessorIsGenerator, keyName);
			this.next();
			}

			this.parsePropertyName(prop, false);
			}
			}

			this.parseObjPropValue(prop, startPos, startLoc, isGenerator, isAsync, isPattern, isAccessor, refExpressionErrors);
			return prop;
			}

			getGetterSetterExpectedParamCount(method) {
			return method.kind === "get" ? 0 : 1;
			}

			getObjectOrClassMethodParams(method) {
			return method.params;
			}

			checkGetterSetterParams(method) {
			var _params;

			const paramCount = this.getGetterSetterExpectedParamCount(method);
			const params = this.getObjectOrClassMethodParams(method);
			const start = method.start;

			if (params.length !== paramCount) {
			if (method.kind === "get") {
			this.raise(start, ErrorMessages.BadGetterArity);
			} else {
			this.raise(start, ErrorMessages.BadSetterArity);
			}
			}

			if (method.kind === "set" && ((_params = params[params.length - 1]) == null ? void 0 : _params.type) === "RestElement") {
			this.raise(start, ErrorMessages.BadSetterRestParameter);
			}
			}

			parseObjectMethod(prop, isGenerator, isAsync, isPattern, isAccessor) {
			if (isAccessor) {
			this.parseMethod(prop, isGenerator, false, false, false, "ObjectMethod");
			this.checkGetterSetterParams(prop);
			return prop;
			}

			if (isAsync \|\| isGenerator \|\| this.match(types.parenL)) {
			if (isPattern) this.unexpected();
			prop.kind = "method";
			prop.method = true;
			return this.parseMethod(prop, isGenerator, isAsync, false, false, "ObjectMethod");
			}
			}

			parseObjectProperty(prop, startPos, startLoc, isPattern, refExpressionErrors) {
			prop.shorthand = false;

			if (this.eat(types.colon)) {
			prop.value = isPattern ? this.parseMaybeDefault(this.state.start, this.state.startLoc) : this.parseMaybeAssignAllowIn(refExpressionErrors);
			return this.finishNode(prop, "ObjectProperty");
			}

			if (!prop.computed && prop.key.type === "Identifier") {
			this.checkReservedWord(prop.key.name, prop.key.start, true, false);

			if (isPattern) {
			prop.value = this.parseMaybeDefault(startPos, startLoc, prop.key.__clone());
			} else if (this.match(types.eq) && refExpressionErrors) {
			if (refExpressionErrors.shorthandAssign === -1) {
			refExpressionErrors.shorthandAssign = this.state.start;
			}

			prop.value = this.parseMaybeDefault(startPos, startLoc, prop.key.__clone());
			} else {
			prop.value = prop.key.__clone();
			}

			prop.shorthand = true;
			return this.finishNode(prop, "ObjectProperty");
			}
			}

			parseObjPropValue(prop, startPos, startLoc, isGenerator, isAsync, isPattern, isAccessor, refExpressionErrors) {
			const node = this.parseObjectMethod(prop, isGenerator, isAsync, isPattern, isAccessor) \|\| this.parseObjectProperty(prop, startPos, startLoc, isPattern, refExpressionErrors);
			if (!node) this.unexpected();
			return node;
			}

			parsePropertyName(prop, isPrivateNameAllowed) {
			if (this.eat(types.bracketL)) {
			prop.computed = true;
			prop.key = this.parseMaybeAssignAllowIn();
			this.expect(types.bracketR);
			} else {
			const oldInPropertyName = this.state.inPropertyName;
			this.state.inPropertyName = true;
			prop.key = this.match(types.num) \|\| this.match(types.string) \|\| this.match(types.bigint) \|\| this.match(types.decimal) ? this.parseExprAtom() : this.parseMaybePrivateName(isPrivateNameAllowed);

			if (!this.isPrivateName(prop.key)) {
			prop.computed = false;
			}

			this.state.inPropertyName = oldInPropertyName;
			}

			return prop.key;
			}

			initFunction(node, isAsync) {
			node.id = null;
			node.generator = false;
			node.async = !!isAsync;
			}

			parseMethod(node, isGenerator, isAsync, isConstructor, allowDirectSuper, type, inClassScope = false) {
			this.initFunction(node, isAsync);
			node.generator = !!isGenerator;
			const allowModifiers = isConstructor;
			this.scope.enter(SCOPE_FUNCTION \| SCOPE_SUPER \| (inClassScope ? SCOPE_CLASS : 0) \| (allowDirectSuper ? SCOPE_DIRECT_SUPER : 0));
			this.prodParam.enter(functionFlags(isAsync, node.generator));
			this.parseFunctionParams(node, allowModifiers);
			this.parseFunctionBodyAndFinish(node, type, true);
			this.prodParam.exit();
			this.scope.exit();
			return node;
			}

			parseArrayLike(close, canBePattern, isTuple, refExpressionErrors) {
			if (isTuple) {
			this.expectPlugin("recordAndTuple");
			}

			const oldInFSharpPipelineDirectBody = this.state.inFSharpPipelineDirectBody;
			this.state.inFSharpPipelineDirectBody = false;
			const node = this.startNode();
			this.next();
			node.elements = this.parseExprList(close, !isTuple, refExpressionErrors, node);
			this.state.inFSharpPipelineDirectBody = oldInFSharpPipelineDirectBody;
			return this.finishNode(node, isTuple ? "TupleExpression" : "ArrayExpression");
			}

			parseArrowExpression(node, params, isAsync, trailingCommaPos) {
			this.scope.enter(SCOPE_FUNCTION \| SCOPE_ARROW);
			let flags = functionFlags(isAsync, false);

			if (!this.match(types.bracketL) && 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, trailingCommaPos);
			}

			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, trailingCommaPos) {
			node.params = this.toAssignableList(params, trailingCommaPos, false);
			}

			parseFunctionBodyAndFinish(node, type, isMethod = false) {
			this.parseFunctionBody(node, false, isMethod);
			this.finishNode(node, type);
			}

			parseFunctionBody(node, allowExpression, isMethod = false) {
			const isExpression = allowExpression && !this.match(types.braceL);
			this.expressionScope.enter(newExpressionScope());

			if (isExpression) {
			node.body = this.parseMaybeAssign();
			this.checkParams(node, false, allowExpression, false);
			} else {
			const oldStrict = this.state.strict;
			const oldLabels = this.state.labels;
			this.state.labels = [];
			this.prodParam.enter(this.prodParam.currentFlags() \| PARAM_RETURN);
			node.body = this.parseBlock(true, false, hasStrictModeDirective => {
			const nonSimple = !this.isSimpleParamList(node.params);

			if (hasStrictModeDirective && nonSimple) {
			const errorPos = (node.kind === "method" \|\| node.kind === "constructor") && !!node.key ? node.key.end : node.start;
			this.raise(errorPos, ErrorMessages.IllegalLanguageModeDirective);
			}

			const strictModeChanged = !oldStrict && this.state.strict;
			this.checkParams(node, !this.state.strict && !allowExpression && !isMethod && !nonSimple, allowExpression, strictModeChanged);

			if (this.state.strict && node.id) {
			this.checkLVal(node.id, "function name", BIND_OUTSIDE, undefined, undefined, strictModeChanged);
			}
			});
			this.prodParam.exit();
			this.expressionScope.exit();
			this.state.labels = oldLabels;
			}
			}

			isSimpleParamList(params) {
			for (let i = 0, len = params.length; i < len; i++) {
			if (params[i].type !== "Identifier") return false;
			}

			return true;
			}

			checkParams(node, allowDuplicates, isArrowFunction, strictModeChanged = true) {
			const checkClashes = new Set();

			for (let _i2 = 0, _node$params = node.params; _i2 < _node$params.length; _i2++) {
			const param = _node$params[_i2];
			this.checkLVal(param, "function parameter list", BIND_VAR, allowDuplicates ? null : checkClashes, undefined, strictModeChanged);
			}
			}

			parseExprList(close, allowEmpty, refExpressionErrors, nodeForExtra) {
			const elts = [];
			let first = true;

			while (!this.eat(close)) {
			if (first) {
			first = false;
			} else {
			this.expect(types.comma);

			if (this.match(close)) {
			if (nodeForExtra) {
			this.addExtra(nodeForExtra, "trailingComma", this.state.lastTokStart);
			}

			this.next();
			break;
			}
			}

			elts.push(this.parseExprListItem(allowEmpty, refExpressionErrors));
			}

			return elts;
			}

			parseExprListItem(allowEmpty, refExpressionErrors, refNeedsArrowPos, allowPlaceholder) {
			let elt;

			if (this.match(types.comma)) {
			if (!allowEmpty) {
			this.raise(this.state.pos, ErrorMessages.UnexpectedToken, ",");
			}

			elt = null;
			} else if (this.match(types.ellipsis)) {
			const spreadNodeStartPos = this.state.start;
			const spreadNodeStartLoc = this.state.startLoc;
			elt = this.parseParenItem(this.parseSpread(refExpressionErrors, refNeedsArrowPos), spreadNodeStartPos, spreadNodeStartLoc);
			} else if (this.match(types.question)) {
			this.expectPlugin("partialApplication");

			if (!allowPlaceholder) {
			this.raise(this.state.start, ErrorMessages.UnexpectedArgumentPlaceholder);
			}

			const node = this.startNode();
			this.next();
			elt = this.finishNode(node, "ArgumentPlaceholder");
			} else {
			elt = this.parseMaybeAssignAllowIn(refExpressionErrors, this.parseParenItem, refNeedsArrowPos);
			}

			return elt;
			}

			parseIdentifier(liberal) {
			const node = this.startNode();
			const name = this.parseIdentifierName(node.start, liberal);
			return this.createIdentifier(node, name);
			}

			createIdentifier(node, name) {
			node.name = name;
			node.loc.identifierName = name;
			return this.finishNode(node, "Identifier");
			}

			parseIdentifierName(pos, liberal) {
			let name;
			const {
			start,
			type
			} = this.state;

			if (type === types.name) {
			name = this.state.value;
			} else if (type.keyword) {
			name = type.keyword;
			const curContext = this.curContext();

			if ((type === types._class \|\| type === types._function) && (curContext === types$1.functionStatement \|\| curContext === types$1.functionExpression)) {
			this.state.context.pop();
			}
			} else {
			throw this.unexpected();
			}

			if (liberal) {
			this.state.type = types.name;
			} else {
			this.checkReservedWord(name, start, !!type.keyword, false);
			}

			this.next();
			return name;
			}

			checkReservedWord(word, startLoc, checkKeywords, isBinding) {
			if (this.prodParam.hasYield && word === "yield") {
			this.raise(startLoc, ErrorMessages.YieldBindingIdentifier);
			return;
			}

			if (word === "await") {
			if (this.prodParam.hasAwait) {
			this.raise(startLoc, ErrorMessages.AwaitBindingIdentifier);
			return;
			} else {
			this.expressionScope.recordAsyncArrowParametersError(startLoc, ErrorMessages.AwaitBindingIdentifier);
			}
			}

			if (this.scope.inClass && !this.scope.inNonArrowFunction && word === "arguments") {
			this.raise(startLoc, ErrorMessages.ArgumentsInClass);
			return;
			}

			if (checkKeywords && isKeyword(word)) {
			this.raise(startLoc, ErrorMessages.UnexpectedKeyword, word);
			return;
			}

			const reservedTest = !this.state.strict ? isReservedWord : isBinding ? isStrictBindReservedWord : isStrictReservedWord;

			if (reservedTest(word, this.inModule)) {
			if (!this.prodParam.hasAwait && word === "await") {
			this.raise(startLoc, this.hasPlugin("topLevelAwait") ? ErrorMessages.AwaitNotInAsyncContext : ErrorMessages.AwaitNotInAsyncFunction);
			} else {
			this.raise(startLoc, ErrorMessages.UnexpectedReservedWord, word);
			}
			}
			}

			isAwaitAllowed() {
			if (this.prodParam.hasAwait) return true;

			if (this.options.allowAwaitOutsideFunction && !this.scope.inFunction) {
			return true;
			}

			return false;
			}

			parseAwait() {
			const node = this.startNode();
			this.next();
			this.expressionScope.recordParameterInitializerError(node.start, ErrorMessages.AwaitExpressionFormalParameter);

			if (this.eat(types.star)) {
			this.raise(node.start, ErrorMessages.ObsoleteAwaitStar);
			}

			if (!this.scope.inFunction && !this.options.allowAwaitOutsideFunction) {
			if (this.hasPrecedingLineBreak() \|\| this.match(types.plusMin) \|\| this.match(types.parenL) \|\| this.match(types.bracketL) \|\| this.match(types.backQuote) \|\| this.match(types.regexp) \|\| this.match(types.slash) \|\| this.hasPlugin("v8intrinsic") && this.match(types.modulo)) {
			this.ambiguousScriptDifferentAst = true;
			} else {
			this.sawUnambiguousESM = true;
			}
			}

			if (!this.state.soloAwait) {
			node.argument = this.parseMaybeUnary();
			}

			return this.finishNode(node, "AwaitExpression");
			}

			parseYield() {
			const node = this.startNode();
			this.expressionScope.recordParameterInitializerError(node.start, ErrorMessages.YieldInParameter);
			this.next();

			if (this.match(types.semi) \|\| !this.match(types.star) && !this.state.type.startsExpr \|\| this.hasPrecedingLineBreak()) {
			node.delegate = false;
			node.argument = null;
			} else {
			node.delegate = this.eat(types.star);
			node.argument = this.parseMaybeAssign();
			}

			return this.finishNode(node, "YieldExpression");
			}

			checkPipelineAtInfixOperator(left, leftStartPos) {
			if (this.getPluginOption("pipelineOperator", "proposal") === "smart") {
			if (left.type === "SequenceExpression") {
			this.raise(leftStartPos, ErrorMessages.PipelineHeadSequenceExpression);
			}
			}
			}

			parseSmartPipelineBody(childExpression, startPos, startLoc) {
			this.checkSmartPipelineBodyEarlyErrors(childExpression, startPos);
			return this.parseSmartPipelineBodyInStyle(childExpression, startPos, startLoc);
			}

			checkSmartPipelineBodyEarlyErrors(childExpression, startPos) {
			if (this.match(types.arrow)) {
			throw this.raise(this.state.start, ErrorMessages.PipelineBodyNoArrow);
			} else if (childExpression.type === "SequenceExpression") {
			this.raise(startPos, ErrorMessages.PipelineBodySequenceExpression);
			}
			}

			parseSmartPipelineBodyInStyle(childExpression, startPos, startLoc) {
			const bodyNode = this.startNodeAt(startPos, startLoc);
			const isSimpleReference = this.isSimpleReference(childExpression);

			if (isSimpleReference) {
			bodyNode.callee = childExpression;
			} else {
			if (!this.topicReferenceWasUsedInCurrentTopicContext()) {
			this.raise(startPos, ErrorMessages.PipelineTopicUnused);
			}

			bodyNode.expression = childExpression;
			}

			return this.finishNode(bodyNode, isSimpleReference ? "PipelineBareFunction" : "PipelineTopicExpression");
			}

			isSimpleReference(expression) {
			switch (expression.type) {
			case "MemberExpression":
			return !expression.computed && this.isSimpleReference(expression.object);

			case "Identifier":
			return true;

			default:
			return false;
			}
			}

			withTopicPermittingContext(callback) {
			const outerContextTopicState = this.state.topicContext;
			this.state.topicContext = {
			maxNumOfResolvableTopics: 1,
			maxTopicIndex: null
			};

			try {
			return callback();
			} finally {
			this.state.topicContext = outerContextTopicState;
			}
			}

			withTopicForbiddingContext(callback) {
			const outerContextTopicState = this.state.topicContext;
			this.state.topicContext = {
			maxNumOfResolvableTopics: 0,
			maxTopicIndex: null
			};

			try {
			return callback();
			} finally {
			this.state.topicContext = outerContextTopicState;
			}
			}

			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;
			}

			primaryTopicReferenceIsAllowedInCurrentTopicContext() {
			return this.state.topicContext.maxNumOfResolvableTopics >= 1;
			}

			topicReferenceWasUsedInCurrentTopicContext() {
			return this.state.topicContext.maxTopicIndex != null && this.state.topicContext.maxTopicIndex >= 0;
			}

			parseFSharpPipelineBody(prec) {
			const startPos = this.state.start;
			const startLoc = this.state.startLoc;
			this.state.potentialArrowAt = this.state.start;
			const oldInFSharpPipelineDirectBody = this.state.inFSharpPipelineDirectBody;
			this.state.inFSharpPipelineDirectBody = true;
			const ret = this.parseExprOp(this.parseMaybeUnary(), startPos, startLoc, prec);
			this.state.inFSharpPipelineDirectBody = oldInFSharpPipelineDirectBody;
			return ret;
			}

			}

			const loopLabel = {
			kind: "loop"
			},
			switchLabel = {
			kind: "switch"
			};
			const FUNC_NO_FLAGS = 0b000,
			FUNC_STATEMENT = 0b001,
			FUNC_HANGING_STATEMENT = 0b010,
			FUNC_NULLABLE_ID = 0b100;
			const loneSurrogate = /[\uD800-\uDFFF]/u;
			class StatementParser extends ExpressionParser {
			parseTopLevel(file, program) {
			program.sourceType = this.options.sourceType;
			program.interpreter = this.parseInterpreterDirective();
			this.parseBlockBody(program, true, true, types.eof);

			if (this.inModule && !this.options.allowUndeclaredExports && this.scope.undefinedExports.size > 0) {
			for (let _i = 0, _Array$from = Array.from(this.scope.undefinedExports); _i < _Array$from.length; _i++) {
			const [name] = _Array$from[_i];
			const pos = this.scope.undefinedExports.get(name);
			this.raise(pos, ErrorMessages.ModuleExportUndefined, name);
			}
			}

			file.program = this.finishNode(program, "Program");
			file.comments = this.state.comments;
			if (this.options.tokens) file.tokens = this.tokens;
			return this.finishNode(file, "File");
			}

			stmtToDirective(stmt) {
			const expr = stmt.expression;
			const directiveLiteral = this.startNodeAt(expr.start, expr.loc.start);
			const directive = this.startNodeAt(stmt.start, stmt.loc.start);
			const raw = this.input.slice(expr.start, expr.end);
			const val = directiveLiteral.value = raw.slice(1, -1);
			this.addExtra(directiveLiteral, "raw", raw);
			this.addExtra(directiveLiteral, "rawValue", val);
			directive.value = this.finishNodeAt(directiveLiteral, "DirectiveLiteral", expr.end, expr.loc.end);
			return this.finishNodeAt(directive, "Directive", stmt.end, stmt.loc.end);
			}

			parseInterpreterDirective() {
			if (!this.match(types.interpreterDirective)) {
			return null;
			}

			const node = this.startNode();
			node.value = this.state.value;
			this.next();
			return this.finishNode(node, "InterpreterDirective");
			}

			isLet(context) {
			if (!this.isContextual("let")) {
			return false;
			}

			const next = this.nextTokenStart();
			const nextCh = this.input.charCodeAt(next);
			if (nextCh === 91) return true;
			if (context) return false;
			if (nextCh === 123) return true;

			if (isIdentifierStart(nextCh)) {
			let pos = next + 1;

			while (isIdentifierChar(this.input.charCodeAt(pos))) {
			++pos;
			}

			const ident = this.input.slice(next, pos);
			if (!keywordRelationalOperator.test(ident)) return true;
			}

			return false;
			}

			parseStatement(context, topLevel) {
			if (this.match(types.at)) {
			this.parseDecorators(true);
			}

			return this.parseStatementContent(context, topLevel);
			}

			parseStatementContent(context, topLevel) {
			let starttype = this.state.type;
			const node = this.startNode();
			let kind;

			if (this.isLet(context)) {
			starttype = types._var;
			kind = "let";
			}

			switch (starttype) {
			case types._break:
			case types._continue:
			return this.parseBreakContinueStatement(node, starttype.keyword);

			case types._debugger:
			return this.parseDebuggerStatement(node);

			case types._do:
			return this.parseDoStatement(node);

			case types._for:
			return this.parseForStatement(node);

			case types._function:
			if (this.lookaheadCharCode() === 46) break;

			if (context) {
			if (this.state.strict) {
			this.raise(this.state.start, ErrorMessages.StrictFunction);
			} else if (context !== "if" && context !== "label") {
			this.raise(this.state.start, ErrorMessages.SloppyFunction);
			}
			}

			return this.parseFunctionStatement(node, false, !context);

			case types._class:
			if (context) this.unexpected();
			return this.parseClass(node, true);

			case types._if:
			return this.parseIfStatement(node);

			case types._return:
			return this.parseReturnStatement(node);

			case types._switch:
			return this.parseSwitchStatement(node);

			case types._throw:
			return this.parseThrowStatement(node);

			case types._try:
			return this.parseTryStatement(node);

			case types._const:
			case types._var:
			kind = kind \|\| this.state.value;

			if (context && kind !== "var") {
			this.raise(this.state.start, ErrorMessages.UnexpectedLexicalDeclaration);
			}

			return this.parseVarStatement(node, kind);

			case types._while:
			return this.parseWhileStatement(node);

			case types._with:
			return this.parseWithStatement(node);

			case types.braceL:
			return this.parseBlock();

			case types.semi:
			return this.parseEmptyStatement(node);

			case types._import:
			{
			const nextTokenCharCode = this.lookaheadCharCode();

			if (nextTokenCharCode === 40 \|\| nextTokenCharCode === 46) {
			break;
			}
			}

			case types._export:
			{
			if (!this.options.allowImportExportEverywhere && !topLevel) {
			this.raise(this.state.start, ErrorMessages.UnexpectedImportExport);
			}

			this.next();
			let result;

			if (starttype === types._import) {
			result = this.parseImport(node);

			if (result.type === "ImportDeclaration" && (!result.importKind \|\| result.importKind === "value")) {
			this.sawUnambiguousESM = true;
			}
			} else {
			result = this.parseExport(node);

			if (result.type === "ExportNamedDeclaration" && (!result.exportKind \|\| result.exportKind === "value") \|\| result.type === "ExportAllDeclaration" && (!result.exportKind \|\| result.exportKind === "value") \|\| result.type === "ExportDefaultDeclaration") {
			this.sawUnambiguousESM = true;
			}
			}

			this.assertModuleNodeAllowed(node);
			return result;
			}

			default:
			{
			if (this.isAsyncFunction()) {
			if (context) {
			this.raise(this.state.start, ErrorMessages.AsyncFunctionInSingleStatementContext);
			}

			this.next();
			return this.parseFunctionStatement(node, true, !context);
			}
			}
			}

			const maybeName = this.state.value;
			const expr = this.parseExpression();

			if (starttype === types.name && expr.type === "Identifier" && this.eat(types.colon)) {
			return this.parseLabeledStatement(node, maybeName, expr, context);
			} else {
			return this.parseExpressionStatement(node, expr);
			}
			}

			assertModuleNodeAllowed(node) {
			if (!this.options.allowImportExportEverywhere && !this.inModule) {
			this.raiseWithData(node.start, {
			code: "BABEL_PARSER_SOURCETYPE_MODULE_REQUIRED"
			}, ErrorMessages.ImportOutsideModule);
			}
			}

			takeDecorators(node) {
			const decorators = this.state.decoratorStack[this.state.decoratorStack.length - 1];

			if (decorators.length) {
			node.decorators = decorators;
			this.resetStartLocationFromNode(node, decorators[0]);
			this.state.decoratorStack[this.state.decoratorStack.length - 1] = [];
			}
			}

			canHaveLeadingDecorator() {
			return this.match(types._class);
			}

			parseDecorators(allowExport) {
			const currentContextDecorators = this.state.decoratorStack[this.state.decoratorStack.length - 1];

			while (this.match(types.at)) {
			const decorator = this.parseDecorator();
			currentContextDecorators.push(decorator);
			}

			if (this.match(types._export)) {
			if (!allowExport) {
			this.unexpected();
			}

			if (this.hasPlugin("decorators") && !this.getPluginOption("decorators", "decoratorsBeforeExport")) {
			this.raise(this.state.start, ErrorMessages.DecoratorExportClass);
			}
			} else if (!this.canHaveLeadingDecorator()) {
			throw this.raise(this.state.start, ErrorMessages.UnexpectedLeadingDecorator);
			}
			}

			parseDecorator() {
			this.expectOnePlugin(["decorators-legacy", "decorators"]);
			const node = this.startNode();
			this.next();

			if (this.hasPlugin("decorators")) {
			this.state.decoratorStack.push([]);
			const startPos = this.state.start;
			const startLoc = this.state.startLoc;
			let expr;

			if (this.eat(types.parenL)) {
			expr = this.parseExpression();
			this.expect(types.parenR);
			} else {
			expr = this.parseIdentifier(false);

			while (this.eat(types.dot)) {
			const node = this.startNodeAt(startPos, startLoc);
			node.object = expr;
			node.property = this.parseIdentifier(true);
			node.computed = false;
			expr = this.finishNode(node, "MemberExpression");
			}
			}

			node.expression = this.parseMaybeDecoratorArguments(expr);
			this.state.decoratorStack.pop();
			} else {
			node.expression = this.parseExprSubscripts();
			}

			return this.finishNode(node, "Decorator");
			}

			parseMaybeDecoratorArguments(expr) {
			if (this.eat(types.parenL)) {
			const node = this.startNodeAtNode(expr);
			node.callee = expr;
			node.arguments = this.parseCallExpressionArguments(types.parenR, false);
			this.toReferencedList(node.arguments);
			return this.finishNode(node, "CallExpression");
			}

			return expr;
			}

			parseBreakContinueStatement(node, keyword) {
			const isBreak = keyword === "break";
			this.next();

			if (this.isLineTerminator()) {
			node.label = null;
			} else {
			node.label = this.parseIdentifier();
			this.semicolon();
			}

			this.verifyBreakContinue(node, keyword);
			return this.finishNode(node, isBreak ? "BreakStatement" : "ContinueStatement");
			}

			verifyBreakContinue(node, keyword) {
			const isBreak = keyword === "break";
			let i;

			for (i = 0; i < this.state.labels.length; ++i) {
			const lab = this.state.labels[i];

			if (node.label == null \|\| lab.name === node.label.name) {
			if (lab.kind != null && (isBreak \|\| lab.kind === "loop")) break;
			if (node.label && isBreak) break;
			}
			}

			if (i === this.state.labels.length) {
			this.raise(node.start, ErrorMessages.IllegalBreakContinue, keyword);
			}
			}

			parseDebuggerStatement(node) {
			this.next();
			this.semicolon();
			return this.finishNode(node, "DebuggerStatement");
			}

			parseHeaderExpression() {
			this.expect(types.parenL);
			const val = this.parseExpression();
			this.expect(types.parenR);
			return val;
			}

			parseDoStatement(node) {
			this.next();
			this.state.labels.push(loopLabel);
			node.body = this.withTopicForbiddingContext(() => this.parseStatement("do"));
			this.state.labels.pop();
			this.expect(types._while);
			node.test = this.parseHeaderExpression();
			this.eat(types.semi);
			return this.finishNode(node, "DoWhileStatement");
			}

			parseForStatement(node) {
			this.next();
			this.state.labels.push(loopLabel);
			let awaitAt = -1;

			if (this.isAwaitAllowed() && this.eatContextual("await")) {
			awaitAt = this.state.lastTokStart;
			}

			this.scope.enter(SCOPE_OTHER);
			this.expect(types.parenL);

			if (this.match(types.semi)) {
			if (awaitAt > -1) {
			this.unexpected(awaitAt);
			}

			return this.parseFor(node, null);
			}

			const isLet = this.isLet();

			if (this.match(types._var) \|\| this.match(types._const) \|\| isLet) {
			const init = this.startNode();
			const kind = isLet ? "let" : this.state.value;
			this.next();
			this.parseVar(init, true, kind);
			this.finishNode(init, "VariableDeclaration");

			if ((this.match(types._in) \|\| this.isContextual("of")) && init.declarations.length === 1) {
			return this.parseForIn(node, init, awaitAt);
			}

			if (awaitAt > -1) {
			this.unexpected(awaitAt);
			}

			return this.parseFor(node, init);
			}

			const refExpressionErrors = new ExpressionErrors();
			const init = this.parseExpression(true, refExpressionErrors);

			if (this.match(types._in) \|\| this.isContextual("of")) {
			this.toAssignable(init, true);
			const description = this.isContextual("of") ? "for-of statement" : "for-in statement";
			this.checkLVal(init, description);
			return this.parseForIn(node, init, awaitAt);
			} else {
			this.checkExpressionErrors(refExpressionErrors, true);
			}

			if (awaitAt > -1) {
			this.unexpected(awaitAt);
			}

			return this.parseFor(node, init);
			}

			parseFunctionStatement(node, isAsync, declarationPosition) {
			this.next();
			return this.parseFunction(node, FUNC_STATEMENT \| (declarationPosition ? 0 : FUNC_HANGING_STATEMENT), isAsync);
			}

			parseIfStatement(node) {
			this.next();
			node.test = this.parseHeaderExpression();
			node.consequent = this.parseStatement("if");
			node.alternate = this.eat(types._else) ? this.parseStatement("if") : null;
			return this.finishNode(node, "IfStatement");
			}

			parseReturnStatement(node) {
			if (!this.prodParam.hasReturn && !this.options.allowReturnOutsideFunction) {
			this.raise(this.state.start, ErrorMessages.IllegalReturn);
			}

			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(types.braceL);
			this.state.labels.push(switchLabel);
			this.scope.enter(SCOPE_OTHER);
			let cur;

			for (let sawDefault; !this.match(types.braceR);) {
			if (this.match(types._case) \|\| this.match(types._default)) {
			const isCase = this.match(types._case);
			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(this.state.lastTokStart, ErrorMessages.MultipleDefaultsInSwitch);
			}

			sawDefault = true;
			cur.test = null;
			}

			this.expect(types.colon);
			} else {
			if (cur) {
			cur.consequent.push(this.parseStatement(null));
			} else {
			this.unexpected();
			}
			}
			}

			this.scope.exit();
			if (cur) this.finishNode(cur, "SwitchCase");
			this.next();
			this.state.labels.pop();
			return this.finishNode(node, "SwitchStatement");
			}

			parseThrowStatement(node) {
			this.next();

			if (this.hasPrecedingLineBreak()) {
			this.raise(this.state.lastTokEnd, ErrorMessages.NewlineAfterThrow);
			}

			node.argument = this.parseExpression();
			this.semicolon();
			return this.finishNode(node, "ThrowStatement");
			}

			parseCatchClauseParam() {
			const param = this.parseBindingAtom();
			const simple = param.type === "Identifier";
			this.scope.enter(simple ? SCOPE_SIMPLE_CATCH : 0);
			this.checkLVal(param, "catch clause", BIND_LEXICAL);
			return param;
			}

			parseTryStatement(node) {
			this.next();
			node.block = this.parseBlock();
			node.handler = null;

			if (this.match(types._catch)) {
			const clause = this.startNode();
			this.next();

			if (this.match(types.parenL)) {
			this.expect(types.parenL);
			clause.param = this.parseCatchClauseParam();
			this.expect(types.parenR);
			} else {
			clause.param = null;
			this.scope.enter(SCOPE_OTHER);
			}

			clause.body = this.withTopicForbiddingContext(() => this.parseBlock(false, false));
			this.scope.exit();
			node.handler = this.finishNode(clause, "CatchClause");
			}

			node.finalizer = this.eat(types._finally) ? this.parseBlock() : null;

			if (!node.handler && !node.finalizer) {
			this.raise(node.start, ErrorMessages.NoCatchOrFinally);
			}

			return this.finishNode(node, "TryStatement");
			}

			parseVarStatement(node, kind) {
			this.next();
			this.parseVar(node, false, kind);
			this.semicolon();
			return this.finishNode(node, "VariableDeclaration");
			}

			parseWhileStatement(node) {
			this.next();
			node.test = this.parseHeaderExpression();
			this.state.labels.push(loopLabel);
			node.body = this.withTopicForbiddingContext(() => this.parseStatement("while"));
			this.state.labels.pop();
			return this.finishNode(node, "WhileStatement");
			}

			parseWithStatement(node) {
			if (this.state.strict) {
			this.raise(this.state.start, ErrorMessages.StrictWith);
			}

			this.next();
			node.object = this.parseHeaderExpression();
			node.body = this.withTopicForbiddingContext(() => this.parseStatement("with"));
			return this.finishNode(node, "WithStatement");
			}

			parseEmptyStatement(node) {
			this.next();
			return this.finishNode(node, "EmptyStatement");
			}

			parseLabeledStatement(node, maybeName, expr, context) {
			for (let _i2 = 0, _this$state$labels = this.state.labels; _i2 < _this$state$labels.length; _i2++) {
			const label = _this$state$labels[_i2];

			if (label.name === maybeName) {
			this.raise(expr.start, ErrorMessages.LabelRedeclaration, maybeName);
			}
			}

			const kind = this.state.type.isLoop ? "loop" : this.match(types._switch) ? "switch" : null;

			for (let i = this.state.labels.length - 1; i >= 0; i--) {
			const label = this.state.labels[i];

			if (label.statementStart === node.start) {
			label.statementStart = this.state.start;
			label.kind = kind;
			} else {
			break;
			}
			}

			this.state.labels.push({
			name: maybeName,
			kind: kind,
			statementStart: this.state.start
			});
			node.body = this.parseStatement(context ? context.indexOf("label") === -1 ? context + "label" : context : "label");
			this.state.labels.pop();
			node.label = expr;
			return this.finishNode(node, "LabeledStatement");
			}

			parseExpressionStatement(node, expr) {
			node.expression = expr;
			this.semicolon();
			return this.finishNode(node, "ExpressionStatement");
			}

			parseBlock(allowDirectives = false, createNewLexicalScope = true, afterBlockParse) {
			const node = this.startNode();

			if (allowDirectives) {
			this.state.strictErrors.clear();
			}

			this.expect(types.braceL);

			if (createNewLexicalScope) {
			this.scope.enter(SCOPE_OTHER);
			}

			this.parseBlockBody(node, allowDirectives, false, types.braceR, afterBlockParse);

			if (createNewLexicalScope) {
			this.scope.exit();
			}

			return this.finishNode(node, "BlockStatement");
			}

			isValidDirective(stmt) {
			return stmt.type === "ExpressionStatement" && stmt.expression.type === "StringLiteral" && !stmt.expression.extra.parenthesized;
			}

			parseBlockBody(node, allowDirectives, topLevel, end, afterBlockParse) {
			const body = node.body = [];
			const directives = node.directives = [];
			this.parseBlockOrModuleBlockBody(body, allowDirectives ? directives : undefined, topLevel, end, afterBlockParse);
			}

			parseBlockOrModuleBlockBody(body, directives, topLevel, end, afterBlockParse) {
			const oldStrict = this.state.strict;
			let hasStrictModeDirective = false;
			let parsedNonDirective = false;

			while (!this.match(end)) {
			const stmt = this.parseStatement(null, topLevel);

			if (directives && !parsedNonDirective) {
			if (this.isValidDirective(stmt)) {
			const directive = this.stmtToDirective(stmt);
			directives.push(directive);

			if (!hasStrictModeDirective && directive.value.value === "use strict") {
			hasStrictModeDirective = true;
			this.setStrict(true);
			}

			continue;
			}

			parsedNonDirective = true;
			this.state.strictErrors.clear();
			}

			body.push(stmt);
			}

			if (afterBlockParse) {
			afterBlockParse.call(this, hasStrictModeDirective);
			}

			if (!oldStrict) {
			this.setStrict(false);
			}

			this.next();
			}

			parseFor(node, init) {
			node.init = init;
			this.expect(types.semi);
			node.test = this.match(types.semi) ? null : this.parseExpression();
			this.expect(types.semi);
			node.update = this.match(types.parenR) ? null : this.parseExpression();
			this.expect(types.parenR);
			node.body = this.withTopicForbiddingContext(() => this.parseStatement("for"));
			this.scope.exit();
			this.state.labels.pop();
			return this.finishNode(node, "ForStatement");
			}

			parseForIn(node, init, awaitAt) {
			const isForIn = this.match(types._in);
			this.next();

			if (isForIn) {
			if (awaitAt > -1) this.unexpected(awaitAt);
			} else {
			node.await = awaitAt > -1;
			}

			if (init.type === "VariableDeclaration" && init.declarations[0].init != null && (!isForIn \|\| this.state.strict \|\| init.kind !== "var" \|\| init.declarations[0].id.type !== "Identifier")) {
			this.raise(init.start, ErrorMessages.ForInOfLoopInitializer, isForIn ? "for-in" : "for-of");
			} else if (init.type === "AssignmentPattern") {
			this.raise(init.start, ErrorMessages.InvalidLhs, "for-loop");
			}

			node.left = init;
			node.right = isForIn ? this.parseExpression() : this.parseMaybeAssignAllowIn();
			this.expect(types.parenR);
			node.body = this.withTopicForbiddingContext(() => this.parseStatement("for"));
			this.scope.exit();
			this.state.labels.pop();
			return this.finishNode(node, isForIn ? "ForInStatement" : "ForOfStatement");
			}

			parseVar(node, isFor, kind) {
			const declarations = node.declarations = [];
			const isTypescript = this.hasPlugin("typescript");
			node.kind = kind;

			for (;;) {
			const decl = this.startNode();
			this.parseVarId(decl, kind);

			if (this.eat(types.eq)) {
			decl.init = isFor ? this.parseMaybeAssignDisallowIn() : this.parseMaybeAssignAllowIn();
			} else {
			if (kind === "const" && !(this.match(types._in) \|\| this.isContextual("of"))) {
			if (!isTypescript) {
			this.raise(this.state.lastTokEnd, ErrorMessages.DeclarationMissingInitializer, "Const declarations");
			}
			} else if (decl.id.type !== "Identifier" && !(isFor && (this.match(types._in) \|\| this.isContextual("of")))) {
			this.raise(this.state.lastTokEnd, ErrorMessages.DeclarationMissingInitializer, "Complex binding patterns");
			}

			decl.init = null;
			}

			declarations.push(this.finishNode(decl, "VariableDeclarator"));
			if (!this.eat(types.comma)) break;
			}

			return node;
			}

			parseVarId(decl, kind) {
			decl.id = this.parseBindingAtom();
			this.checkLVal(decl.id, "variable declaration", kind === "var" ? BIND_VAR : BIND_LEXICAL, undefined, kind !== "var");
			}

			parseFunction(node, statement = FUNC_NO_FLAGS, isAsync = false) {
			const isStatement = statement & FUNC_STATEMENT;
			const isHangingStatement = statement & FUNC_HANGING_STATEMENT;
			const requireId = !!isStatement && !(statement & FUNC_NULLABLE_ID);
			this.initFunction(node, isAsync);

			if (this.match(types.star) && isHangingStatement) {
			this.raise(this.state.start, ErrorMessages.GeneratorInSingleStatementContext);
			}

			node.generator = this.eat(types.star);

			if (isStatement) {
			node.id = this.parseFunctionId(requireId);
			}

			const oldMaybeInArrowParameters = this.state.maybeInArrowParameters;
			this.state.maybeInArrowParameters = false;
			this.scope.enter(SCOPE_FUNCTION);
			this.prodParam.enter(functionFlags(isAsync, node.generator));

			if (!isStatement) {
			node.id = this.parseFunctionId();
			}

			this.parseFunctionParams(node, false);
			this.withTopicForbiddingContext(() => {
			this.parseFunctionBodyAndFinish(node, isStatement ? "FunctionDeclaration" : "FunctionExpression");
			});
			this.prodParam.exit();
			this.scope.exit();

			if (isStatement && !isHangingStatement) {
			this.registerFunctionStatementId(node);
			}

			this.state.maybeInArrowParameters = oldMaybeInArrowParameters;
			return node;
			}

			parseFunctionId(requireId) {
			return requireId \|\| this.match(types.name) ? this.parseIdentifier() : null;
			}

			parseFunctionParams(node, allowModifiers) {
			this.expect(types.parenL);
			this.expressionScope.enter(newParameterDeclarationScope());
			node.params = this.parseBindingList(types.parenR, 41, false, allowModifiers);
			this.expressionScope.exit();
			}

			registerFunctionStatementId(node) {
			if (!node.id) return;
			this.scope.declareName(node.id.name, this.state.strict \|\| node.generator \|\| node.async ? this.scope.treatFunctionsAsVar ? BIND_VAR : BIND_LEXICAL : BIND_FUNCTION, node.id.start);
			}

			parseClass(node, isStatement, optionalId) {
			this.next();
			this.takeDecorators(node);
			const oldStrict = this.state.strict;
			this.state.strict = true;
			this.parseClassId(node, isStatement, optionalId);
			this.parseClassSuper(node);
			node.body = this.parseClassBody(!!node.superClass, oldStrict);
			return this.finishNode(node, isStatement ? "ClassDeclaration" : "ClassExpression");
			}

			isClassProperty() {
			return this.match(types.eq) \|\| this.match(types.semi) \|\| this.match(types.braceR);
			}

			isClassMethod() {
			return this.match(types.parenL);
			}

			isNonstaticConstructor(method) {
			return !method.computed && !method.static && (method.key.name === "constructor" \|\| method.key.value === "constructor");
			}

			parseClassBody(constructorAllowsSuper, oldStrict) {
			this.classScope.enter();
			const state = {
			constructorAllowsSuper,
			hadConstructor: false,
			hadStaticBlock: false
			};
			let decorators = [];
			const classBody = this.startNode();
			classBody.body = [];
			this.expect(types.braceL);
			this.withTopicForbiddingContext(() => {
			while (!this.match(types.braceR)) {
			if (this.eat(types.semi)) {
			if (decorators.length > 0) {
			throw this.raise(this.state.lastTokEnd, ErrorMessages.DecoratorSemicolon);
			}

			continue;
			}

			if (this.match(types.at)) {
			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(member.start, ErrorMessages.DecoratorConstructor);
			}
			}
			});
			this.state.strict = oldStrict;
			this.next();

			if (decorators.length) {
			throw this.raise(this.state.start, ErrorMessages.TrailingDecorator);
			}

			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;
			}

			return false;
			}

			parseClassMember(classBody, member, state) {
			const isStatic = this.isContextual("static");

			if (isStatic) {
			if (this.parseClassMemberFromModifier(classBody, member)) {
			return;
			}

			if (this.eat(types.braceL)) {
			this.parseClassStaticBlock(classBody, member, state);
			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 method = publicMethod;
			const publicMember = publicMethod;
			member.static = isStatic;

			if (this.eat(types.star)) {
			method.kind = "method";
			this.parseClassElementName(method);

			if (this.isPrivateName(method.key)) {
			this.pushClassPrivateMethod(classBody, privateMethod, true, false);
			return;
			}

			if (this.isNonstaticConstructor(publicMethod)) {
			this.raise(publicMethod.key.start, ErrorMessages.ConstructorIsGenerator);
			}

			this.pushClassMethod(classBody, publicMethod, true, false, false, false);
			return;
			}

			const containsEsc = this.state.containsEsc;
			const key = this.parseClassElementName(member);
			const isPrivate = this.isPrivateName(key);
			const isSimple = key.type === "Identifier";
			const maybeQuestionTokenStart = this.state.start;
			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(key.start, ErrorMessages.DuplicateConstructor);
			}

			state.hadConstructor = true;
			allowsDirectSuper = state.constructorAllowsSuper;
			}

			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 (isSimple && key.name === "async" && !containsEsc && !this.isLineTerminator()) {
			const isGenerator = this.eat(types.star);

			if (publicMember.optional) {
			this.unexpected(maybeQuestionTokenStart);
			}

			method.kind = "method";
			this.parseClassElementName(method);
			this.parsePostMemberNameModifiers(publicMember);

			if (this.isPrivateName(method.key)) {
			this.pushClassPrivateMethod(classBody, privateMethod, isGenerator, true);
			} else {
			if (this.isNonstaticConstructor(publicMethod)) {
			this.raise(publicMethod.key.start, ErrorMessages.ConstructorIsAsync);
			}

			this.pushClassMethod(classBody, publicMethod, isGenerator, true, false, false);
			}
			} else if (isSimple && (key.name === "get" \|\| key.name === "set") && !containsEsc && !(this.match(types.star) && this.isLineTerminator())) {
			method.kind = key.name;
			this.parseClassElementName(publicMethod);

			if (this.isPrivateName(method.key)) {
			this.pushClassPrivateMethod(classBody, privateMethod, false, false);
			} else {
			if (this.isNonstaticConstructor(publicMethod)) {
			this.raise(publicMethod.key.start, ErrorMessages.ConstructorIsAccessor);
			}

			this.pushClassMethod(classBody, publicMethod, false, false, false, false);
			}

			this.checkGetterSetterParams(publicMethod);
			} else if (this.isLineTerminator()) {
			if (isPrivate) {
			this.pushClassPrivateProperty(classBody, privateProp);
			} else {
			this.pushClassProperty(classBody, publicProp);
			}
			} else {
			this.unexpected();
			}
			}

			parseClassElementName(member) {
			const key = this.parsePropertyName(member, true);

			if (!member.computed && member.static && (key.name === "prototype" \|\| key.value === "prototype")) {
			this.raise(key.start, ErrorMessages.StaticPrototype);
			}

			if (this.isPrivateName(key) && this.getPrivateNameSV(key) === "constructor") {
			this.raise(key.start, ErrorMessages.ConstructorClassPrivateField);
			}

			return key;
			}

			parseClassStaticBlock(classBody, member, state) {
			var _member$decorators;

			this.expectPlugin("classStaticBlock", member.start);
			this.scope.enter(SCOPE_CLASS \| SCOPE_SUPER);
			this.expressionScope.enter(newExpressionScope());
			const oldLabels = this.state.labels;
			this.state.labels = [];
			this.prodParam.enter(PARAM);
			const body = member.body = [];
			this.parseBlockOrModuleBlockBody(body, undefined, false, types.braceR);
			this.prodParam.exit();
			this.expressionScope.exit();
			this.scope.exit();
			this.state.labels = oldLabels;
			classBody.body.push(this.finishNode(member, "StaticBlock"));

			if (state.hadStaticBlock) {
			this.raise(member.start, ErrorMessages.DuplicateStaticBlock);
			}

			if ((_member$decorators = member.decorators) == null ? void 0 : _member$decorators.length) {
			this.raise(member.start, ErrorMessages.DecoratorStaticBlock);
			}

			state.hadStaticBlock = true;
			}

			pushClassProperty(classBody, prop) {
			if (!prop.computed && (prop.key.name === "constructor" \|\| prop.key.value === "constructor")) {
			this.raise(prop.key.start, ErrorMessages.ConstructorClassField);
			}

			classBody.body.push(this.parseClassProperty(prop));
			}

			pushClassPrivateProperty(classBody, prop) {
			this.expectPlugin("classPrivateProperties", prop.key.start);
			const node = this.parseClassPrivateProperty(prop);
			classBody.body.push(node);
			this.classScope.declarePrivateName(this.getPrivateNameSV(node.key), CLASS_ELEMENT_OTHER, node.key.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) {
			this.expectPlugin("classPrivateMethods", method.key.start);
			const node = this.parseMethod(method, isGenerator, isAsync, false, false, "ClassPrivateMethod", true);
			classBody.body.push(node);
			const kind = node.kind === "get" ? node.static ? CLASS_ELEMENT_STATIC_GETTER : CLASS_ELEMENT_INSTANCE_GETTER : node.kind === "set" ? node.static ? CLASS_ELEMENT_STATIC_SETTER : CLASS_ELEMENT_INSTANCE_SETTER : CLASS_ELEMENT_OTHER;
			this.classScope.declarePrivateName(this.getPrivateNameSV(node.key), kind, node.key.start);
			}

			parsePostMemberNameModifiers(methodOrProp) {}

			parseClassPrivateProperty(node) {
			this.parseInitializer(node);
			this.semicolon();
			return this.finishNode(node, "ClassPrivateProperty");
			}

			parseClassProperty(node) {
			if (!node.typeAnnotation \|\| this.match(types.eq)) {
			this.expectPlugin("classProperties");
			}

			this.parseInitializer(node);
			this.semicolon();
			return this.finishNode(node, "ClassProperty");
			}

			parseInitializer(node) {
			this.scope.enter(SCOPE_CLASS \| SCOPE_SUPER);
			this.expressionScope.enter(newExpressionScope());
			this.prodParam.enter(PARAM);
			node.value = this.eat(types.eq) ? this.parseMaybeAssignAllowIn() : null;
			this.expressionScope.exit();
			this.prodParam.exit();
			this.scope.exit();
			}

			parseClassId(node, isStatement, optionalId, bindingType = BIND_CLASS) {
			if (this.match(types.name)) {
			node.id = this.parseIdentifier();

			if (isStatement) {
			this.checkLVal(node.id, "class name", bindingType);
			}
			} else {
			if (optionalId \|\| !isStatement) {
			node.id = null;
			} else {
			this.unexpected(null, ErrorMessages.MissingClassName);
			}
			}
			}

			parseClassSuper(node) {
			node.superClass = this.eat(types._extends) ? this.parseExprSubscripts() : null;
			}

			parseExport(node) {
			const hasDefault = this.maybeParseExportDefaultSpecifier(node);
			const parseAfterDefault = !hasDefault \|\| this.eat(types.comma);
			const hasStar = parseAfterDefault && this.eatExportStar(node);
			const hasNamespace = hasStar && this.maybeParseExportNamespaceSpecifier(node);
			const parseAfterNamespace = parseAfterDefault && (!hasNamespace \|\| this.eat(types.comma));
			const isFromRequired = hasDefault \|\| hasStar;

			if (hasStar && !hasNamespace) {
			if (hasDefault) this.unexpected();
			this.parseExportFrom(node, true);
			return this.finishNode(node, "ExportAllDeclaration");
			}

			const hasSpecifiers = this.maybeParseExportNamedSpecifiers(node);

			if (hasDefault && parseAfterDefault && !hasStar && !hasSpecifiers \|\| hasNamespace && parseAfterNamespace && !hasSpecifiers) {
			throw this.unexpected(null, types.braceL);
			}

			let hasDeclaration;

			if (isFromRequired \|\| hasSpecifiers) {
			hasDeclaration = false;
			this.parseExportFrom(node, isFromRequired);
			} else {
			hasDeclaration = this.maybeParseExportDeclaration(node);
			}

			if (isFromRequired \|\| hasSpecifiers \|\| hasDeclaration) {
			this.checkExport(node, true, false, !!node.source);
			return this.finishNode(node, "ExportNamedDeclaration");
			}

			if (this.eat(types._default)) {
			node.declaration = this.parseExportDefaultExpression();
			this.checkExport(node, true, true);
			return this.finishNode(node, "ExportDefaultDeclaration");
			}

			throw this.unexpected(null, types.braceL);
			}

			eatExportStar(node) {
			return this.eat(types.star);
			}

			maybeParseExportDefaultSpecifier(node) {
			if (this.isExportDefaultSpecifier()) {
			this.expectPlugin("exportDefaultFrom");
			const specifier = this.startNode();
			specifier.exported = this.parseIdentifier(true);
			node.specifiers = [this.finishNode(specifier, "ExportDefaultSpecifier")];
			return true;
			}

			return false;
			}

			maybeParseExportNamespaceSpecifier(node) {
			if (this.isContextual("as")) {
			if (!node.specifiers) node.specifiers = [];
			const specifier = this.startNodeAt(this.state.lastTokStart, this.state.lastTokStartLoc);
			this.next();
			specifier.exported = this.parseModuleExportName();
			node.specifiers.push(this.finishNode(specifier, "ExportNamespaceSpecifier"));
			return true;
			}

			return false;
			}

			maybeParseExportNamedSpecifiers(node) {
			if (this.match(types.braceL)) {
			if (!node.specifiers) node.specifiers = [];
			node.specifiers.push(...this.parseExportSpecifiers());
			node.source = null;
			node.declaration = null;
			return true;
			}

			return false;
			}

			maybeParseExportDeclaration(node) {
			if (this.shouldParseExportDeclaration()) {
			node.specifiers = [];
			node.source = null;
			node.declaration = this.parseExportDeclaration(node);
			return true;
			}

			return false;
			}

			isAsyncFunction() {
			if (!this.isContextual("async")) return false;
			const next = this.nextTokenStart();
			return !lineBreak.test(this.input.slice(this.state.pos, next)) && this.isUnparsedContextual(next, "function");
			}

			parseExportDefaultExpression() {
			const expr = this.startNode();
			const isAsync = this.isAsyncFunction();

			if (this.match(types._function) \|\| isAsync) {
			this.next();

			if (isAsync) {
			this.next();
			}

			return this.parseFunction(expr, FUNC_STATEMENT \| FUNC_NULLABLE_ID, isAsync);
			} else if (this.match(types._class)) {
			return this.parseClass(expr, true, true);
			} else if (this.match(types.at)) {
			if (this.hasPlugin("decorators") && this.getPluginOption("decorators", "decoratorsBeforeExport")) {
			this.raise(this.state.start, ErrorMessages.DecoratorBeforeExport);
			}

			this.parseDecorators(false);
			return this.parseClass(expr, true, true);
			} else if (this.match(types._const) \|\| this.match(types._var) \|\| this.isLet()) {
			throw this.raise(this.state.start, ErrorMessages.UnsupportedDefaultExport);
			} else {
			const res = this.parseMaybeAssignAllowIn();
			this.semicolon();
			return res;
			}
			}

			parseExportDeclaration(node) {
			return this.parseStatement(null);
			}

			isExportDefaultSpecifier() {
			if (this.match(types.name)) {
			const value = this.state.value;

			if (value === "async" && !this.state.containsEsc \|\| value === "let") {
			return false;
			}

			if ((value === "type" \|\| value === "interface") && !this.state.containsEsc) {
			const l = this.lookahead();

			if (l.type === types.name && l.value !== "from" \|\| l.type === types.braceL) {
			this.expectOnePlugin(["flow", "typescript"]);
			return false;
			}
			}
			} else if (!this.match(types._default)) {
			return false;
			}

			const next = this.nextTokenStart();
			const hasFrom = this.isUnparsedContextual(next, "from");

			if (this.input.charCodeAt(next) === 44 \|\| this.match(types.name) && hasFrom) {
			return true;
			}

			if (this.match(types._default) && hasFrom) {
			const nextAfterFrom = this.input.charCodeAt(this.nextTokenStartSince(next + 4));
			return nextAfterFrom === 34 \|\| nextAfterFrom === 39;
			}

			return false;
			}

			parseExportFrom(node, expect) {
			if (this.eatContextual("from")) {
			node.source = this.parseImportSource();
			this.checkExport(node);
			const assertions = this.maybeParseImportAssertions();

			if (assertions) {
			node.assertions = assertions;
			}
			} else {
			if (expect) {
			this.unexpected();
			} else {
			node.source = null;
			}
			}

			this.semicolon();
			}

			shouldParseExportDeclaration() {
			if (this.match(types.at)) {
			this.expectOnePlugin(["decorators", "decorators-legacy"]);

			if (this.hasPlugin("decorators")) {
			if (this.getPluginOption("decorators", "decoratorsBeforeExport")) {
			this.unexpected(this.state.start, ErrorMessages.DecoratorBeforeExport);
			} else {
			return true;
			}
			}
			}

			return this.state.type.keyword === "var" \|\| this.state.type.keyword === "const" \|\| this.state.type.keyword === "function" \|\| this.state.type.keyword === "class" \|\| this.isLet() \|\| this.isAsyncFunction();
			}

			checkExport(node, checkNames, isDefault, isFrom) {
			if (checkNames) {
			if (isDefault) {
			this.checkDuplicateExports(node, "default");

			if (this.hasPlugin("exportDefaultFrom")) {
			var _declaration$extra;

			const declaration = node.declaration;

			if (declaration.type === "Identifier" && declaration.name === "from" && declaration.end - declaration.start === 4 && !((_declaration$extra = declaration.extra) == null ? void 0 : _declaration$extra.parenthesized)) {
			this.raise(declaration.start, ErrorMessages.ExportDefaultFromAsIdentifier);
			}
			}
			} else if (node.specifiers && node.specifiers.length) {
			for (let _i3 = 0, _node$specifiers = node.specifiers; _i3 < _node$specifiers.length; _i3++) {
			const specifier = _node$specifiers[_i3];
			const {
			exported
			} = specifier;
			const exportedName = exported.type === "Identifier" ? exported.name : exported.value;
			this.checkDuplicateExports(specifier, exportedName);

			if (!isFrom && specifier.local) {
			const {
			local
			} = specifier;

			if (local.type === "StringLiteral") {
			this.raise(specifier.start, ErrorMessages.ExportBindingIsString, local.value, exportedName);
			} else {
			this.checkReservedWord(local.name, local.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 (let _i4 = 0, _node$declaration$dec = node.declaration.declarations; _i4 < _node$declaration$dec.length; _i4++) {
			const declaration = _node$declaration$dec[_i4];
			this.checkDeclaration(declaration.id);
			}
			}
			}
			}

			const currentContextDecorators = this.state.decoratorStack[this.state.decoratorStack.length - 1];

			if (currentContextDecorators.length) {
			throw this.raise(node.start, ErrorMessages.UnsupportedDecoratorExport);
			}
			}

			checkDeclaration(node) {
			if (node.type === "Identifier") {
			this.checkDuplicateExports(node, node.name);
			} else if (node.type === "ObjectPattern") {
			for (let _i5 = 0, _node$properties = node.properties; _i5 < _node$properties.length; _i5++) {
			const prop = _node$properties[_i5];
			this.checkDeclaration(prop);
			}
			} else if (node.type === "ArrayPattern") {
			for (let _i6 = 0, _node$elements = node.elements; _i6 < _node$elements.length; _i6++) {
			const elem = _node$elements[_i6];

			if (elem) {
			this.checkDeclaration(elem);
			}
			}
			} else if (node.type === "ObjectProperty") {
			this.checkDeclaration(node.value);
			} else if (node.type === "RestElement") {
			this.checkDeclaration(node.argument);
			} else if (node.type === "AssignmentPattern") {
			this.checkDeclaration(node.left);
			}
			}

			checkDuplicateExports(node, name) {
			if (this.state.exportedIdentifiers.indexOf(name) > -1) {
			this.raise(node.start, name === "default" ? ErrorMessages.DuplicateDefaultExport : ErrorMessages.DuplicateExport, name);
			}

			this.state.exportedIdentifiers.push(name);
			}

			parseExportSpecifiers() {
			const nodes = [];
			let first = true;
			this.expect(types.braceL);

			while (!this.eat(types.braceR)) {
			if (first) {
			first = false;
			} else {
			this.expect(types.comma);
			if (this.eat(types.braceR)) break;
			}

			const node = this.startNode();
			node.local = this.parseModuleExportName();
			node.exported = this.eatContextual("as") ? this.parseModuleExportName() : node.local.__clone();
			nodes.push(this.finishNode(node, "ExportSpecifier"));
			}

			return nodes;
			}

			parseModuleExportName() {
			if (this.match(types.string)) {
			this.expectPlugin("moduleStringNames");
			const result = this.parseLiteral(this.state.value, "StringLiteral");
			const surrogate = result.value.match(loneSurrogate);

			if (surrogate) {
			this.raise(result.start, ErrorMessages.ModuleExportNameHasLoneSurrogate, surrogate[0].charCodeAt(0).toString(16));
			}

			return result;
			}

			return this.parseIdentifier(true);
			}

			parseImport(node) {
			node.specifiers = [];

			if (!this.match(types.string)) {
			const hasDefault = this.maybeParseDefaultImportSpecifier(node);
			const parseNext = !hasDefault \|\| this.eat(types.comma);
			const hasStar = parseNext && this.maybeParseStarImportSpecifier(node);
			if (parseNext && !hasStar) this.parseNamedImportSpecifiers(node);
			this.expectContextual("from");
			}

			node.source = this.parseImportSource();
			const assertions = this.maybeParseImportAssertions();

			if (assertions) {
			node.assertions = assertions;
			} else {
			const attributes = this.maybeParseModuleAttributes();

			if (attributes) {
			node.attributes = attributes;
			}
			}

			this.semicolon();
			return this.finishNode(node, "ImportDeclaration");
			}

			parseImportSource() {
			if (!this.match(types.string)) this.unexpected();
			return this.parseExprAtom();
			}

			shouldParseDefaultImport(node) {
			return this.match(types.name);
			}

			parseImportSpecifierLocal(node, specifier, type, contextDescription) {
			specifier.local = this.parseIdentifier();
			this.checkLVal(specifier.local, contextDescription, BIND_LEXICAL);
			node.specifiers.push(this.finishNode(specifier, type));
			}

			parseAssertEntries() {
			const attrs = [];
			const attrNames = new Set();

			do {
			if (this.match(types.braceR)) {
			break;
			}

			const node = this.startNode();
			const keyName = this.state.value;

			if (this.match(types.string)) {
			node.key = this.parseLiteral(keyName, "StringLiteral");
			} else {
			node.key = this.parseIdentifier(true);
			}

			this.expect(types.colon);

			if (keyName !== "type") {
			this.raise(node.key.start, ErrorMessages.ModuleAttributeDifferentFromType, keyName);
			}

			if (attrNames.has(keyName)) {
			this.raise(node.key.start, ErrorMessages.ModuleAttributesWithDuplicateKeys, keyName);
			}

			attrNames.add(keyName);

			if (!this.match(types.string)) {
			throw this.unexpected(this.state.start, ErrorMessages.ModuleAttributeInvalidValue);
			}

			node.value = this.parseLiteral(this.state.value, "StringLiteral");
			this.finishNode(node, "ImportAttribute");
			attrs.push(node);
			} while (this.eat(types.comma));

			return attrs;
			}

			maybeParseModuleAttributes() {
			if (this.match(types._with) && !this.hasPrecedingLineBreak()) {
			this.expectPlugin("moduleAttributes");
			this.next();
			} else {
			if (this.hasPlugin("moduleAttributes")) return [];
			return null;
			}

			const attrs = [];
			const attributes = new Set();

			do {
			const node = this.startNode();
			node.key = this.parseIdentifier(true);

			if (node.key.name !== "type") {
			this.raise(node.key.start, ErrorMessages.ModuleAttributeDifferentFromType, node.key.name);
			}

			if (attributes.has(node.key.name)) {
			this.raise(node.key.start, ErrorMessages.ModuleAttributesWithDuplicateKeys, node.key.name);
			}

			attributes.add(node.key.name);
			this.expect(types.colon);

			if (!this.match(types.string)) {
			throw this.unexpected(this.state.start, ErrorMessages.ModuleAttributeInvalidValue);
			}

			node.value = this.parseLiteral(this.state.value, "StringLiteral");
			this.finishNode(node, "ImportAttribute");
			attrs.push(node);
			} while (this.eat(types.comma));

			return attrs;
			}

			maybeParseImportAssertions() {
			if (this.isContextual("assert") && !this.hasPrecedingLineBreak()) {
			this.expectPlugin("importAssertions");
			this.next();
			} else {
			if (this.hasPlugin("importAssertions")) return [];
			return null;
			}

			this.eat(types.braceL);
			const attrs = this.parseAssertEntries();
			this.eat(types.braceR);
			return attrs;
			}

			maybeParseDefaultImportSpecifier(node) {
			if (this.shouldParseDefaultImport(node)) {
			this.parseImportSpecifierLocal(node, this.startNode(), "ImportDefaultSpecifier", "default import specifier");
			return true;
			}

			return false;
			}

			maybeParseStarImportSpecifier(node) {
			if (this.match(types.star)) {
			const specifier = this.startNode();
			this.next();
			this.expectContextual("as");
			this.parseImportSpecifierLocal(node, specifier, "ImportNamespaceSpecifier", "import namespace specifier");
			return true;
			}

			return false;
			}

			parseNamedImportSpecifiers(node) {
			let first = true;
			this.expect(types.braceL);

			while (!this.eat(types.braceR)) {
			if (first) {
			first = false;
			} else {
			if (this.eat(types.colon)) {
			throw this.raise(this.state.start, ErrorMessages.DestructureNamedImport);
			}

			this.expect(types.comma);
			if (this.eat(types.braceR)) break;
			}

			this.parseImportSpecifier(node);
			}
			}

			parseImportSpecifier(node) {
			const specifier = this.startNode();
			specifier.imported = this.parseModuleExportName();

			if (this.eatContextual("as")) {
			specifier.local = this.parseIdentifier();
			} else {
			const {
			imported
			} = specifier;

			if (imported.type === "StringLiteral") {
			throw this.raise(specifier.start, ErrorMessages.ImportBindingIsString, imported.value);
			}

			this.checkReservedWord(imported.name, specifier.start, true, true);
			specifier.local = imported.__clone();
			}

			this.checkLVal(specifier.local, "import specifier", BIND_LEXICAL);
			node.specifiers.push(this.finishNode(specifier, "ImportSpecifier"));
			}

			}

			class ClassScope {
			constructor() {
			this.privateNames = new Set();
			this.loneAccessors = new Map();
			this.undefinedPrivateNames = new Map();
			}

			}
			class ClassScopeHandler {
			constructor(raise) {
			this.stack = [];
			this.undefinedPrivateNames = new Map();
			this.raise = raise;
			}

			current() {
			return this.stack[this.stack.length - 1];
			}

			enter() {
			this.stack.push(new ClassScope());
			}

			exit() {
			const oldClassScope = this.stack.pop();
			const current = this.current();

			for (let _i = 0, _Array$from = Array.from(oldClassScope.undefinedPrivateNames); _i < _Array$from.length; _i++) {
			const [name, pos] = _Array$from[_i];

			if (current) {
			if (!current.undefinedPrivateNames.has(name)) {
			current.undefinedPrivateNames.set(name, pos);
			}
			} else {
			this.raise(pos, ErrorMessages.InvalidPrivateFieldResolution, name);
			}
			}
			}

			declarePrivateName(name, elementType, pos) {
			const classScope = this.current();
			let redefined = classScope.privateNames.has(name);

			if (elementType & CLASS_ELEMENT_KIND_ACCESSOR) {
			const accessor = redefined && classScope.loneAccessors.get(name);

			if (accessor) {
			const oldStatic = accessor & CLASS_ELEMENT_FLAG_STATIC;
			const newStatic = elementType & CLASS_ELEMENT_FLAG_STATIC;
			const oldKind = accessor & CLASS_ELEMENT_KIND_ACCESSOR;
			const newKind = elementType & CLASS_ELEMENT_KIND_ACCESSOR;
			redefined = oldKind === newKind \|\| oldStatic !== newStatic;
			if (!redefined) classScope.loneAccessors.delete(name);
			} else if (!redefined) {
			classScope.loneAccessors.set(name, elementType);
			}
			}

			if (redefined) {
			this.raise(pos, ErrorMessages.PrivateNameRedeclaration, name);
			}

			classScope.privateNames.add(name);
			classScope.undefinedPrivateNames.delete(name);
			}

			usePrivateName(name, pos) {
			let classScope;

			for (let _i2 = 0, _this$stack = this.stack; _i2 < _this$stack.length; _i2++) {
			classScope = _this$stack[_i2];
			if (classScope.privateNames.has(name)) return;
			}

			if (classScope) {
			classScope.undefinedPrivateNames.set(name, pos);
			} else {
			this.raise(pos, ErrorMessages.InvalidPrivateFieldResolution, name);
			}
			}

			}

			class Parser extends StatementParser {
			constructor(options, input) {
			options = getOptions(options);
			super(options, input);
			const ScopeHandler = this.getScopeHandler();
			this.options = options;
			this.inModule = this.options.sourceType === "module";
			this.scope = new ScopeHandler(this.raise.bind(this), this.inModule);
			this.prodParam = new ProductionParameterHandler();
			this.classScope = new ClassScopeHandler(this.raise.bind(this));
			this.expressionScope = new ExpressionScopeHandler(this.raise.bind(this));
			this.plugins = pluginsMap(this.options.plugins);
			this.filename = options.sourceFilename;
			}

			getScopeHandler() {
			return ScopeHandler;
			}

			parse() {
			let paramFlags = PARAM;

			if (this.hasPlugin("topLevelAwait") && this.inModule) {
			paramFlags \|= PARAM_AWAIT;
			}

			this.scope.enter(SCOPE_PROGRAM);
			this.prodParam.enter(paramFlags);
			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 (let _i = 0; _i < plugins.length; _i++) {
			const plugin = plugins[_i];
			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 getParser(options, input) {
			let cls = Parser;

			if (options == null ? void 0 : 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 (let _i = 0; _i < pluginList.length; _i++) {
			const plugin = pluginList[_i];
			cls = mixinPlugins[plugin](cls);
			}

			parserClassCache[key] = cls;
			}

			return cls;
			}

			exports.parse = parse;
			exports.parseExpression = parseExpression;
			exports.tokTypes = types;
			//# sourceMappingURL=index.js.map