Files F95209818

index.js
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Created: Fri, Dec 13, 18:36

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

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