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chromium / devtools / devtools-frontend / main / . / node_modules / @babel / parser / lib / index.js
blob: 99fe7390e04e1874731e0befa5dc4e630612e9e6 [file] [log] [blame]
'use strict';
Object.defineProperty(exports, '__esModule', {
value: true
});
function _objectWithoutPropertiesLoose(r, e) {
if (null == r) return {};
var t = {};
for (var n in r) if ({}.hasOwnProperty.call(r, n)) {
if (-1 !== e.indexOf(n)) continue;
t[n] = r[n];
}
return t;
}
class Position {
constructor(line, col, index) {
this.line = void 0;
this.column = void 0;
this.index = void 0;
this.line = line;
this.column = col;
this.index = index;
}
}
class SourceLocation {
constructor(start, end) {
this.start = void 0;
this.end = void 0;
this.filename = void 0;
this.identifierName = void 0;
this.start = start;
this.end = end;
}
}
function createPositionWithColumnOffset(position, columnOffset) {
const {
line,
column,
index
} = position;
return new Position(line, column + columnOffset, index + columnOffset);
}
const code = "BABEL_PARSER_SOURCETYPE_MODULE_REQUIRED";
var ModuleErrors = {
ImportMetaOutsideModule: {
message: `import.meta may appear only with 'sourceType: "module"'`,
code
},
ImportOutsideModule: {
message: `'import' and 'export' may appear only with 'sourceType: "module"'`,
code
}
};
const NodeDescriptions = {
ArrayPattern: "array destructuring pattern",
AssignmentExpression: "assignment expression",
AssignmentPattern: "assignment expression",
ArrowFunctionExpression: "arrow function expression",
ConditionalExpression: "conditional expression",
CatchClause: "catch clause",
ForOfStatement: "for-of statement",
ForInStatement: "for-in statement",
ForStatement: "for-loop",
FormalParameters: "function parameter list",
Identifier: "identifier",
ImportSpecifier: "import specifier",
ImportDefaultSpecifier: "import default specifier",
ImportNamespaceSpecifier: "import namespace specifier",
ObjectPattern: "object destructuring pattern",
ParenthesizedExpression: "parenthesized expression",
RestElement: "rest element",
UpdateExpression: {
true: "prefix operation",
false: "postfix operation"
},
VariableDeclarator: "variable declaration",
YieldExpression: "yield expression"
};
const toNodeDescription = node => node.type === "UpdateExpression" ? NodeDescriptions.UpdateExpression[`${node.prefix}`] : NodeDescriptions[node.type];
var StandardErrors = {
AccessorIsGenerator: ({
kind
}) => `A ${kind}ter cannot be a generator.`,
ArgumentsInClass: "'arguments' is only allowed in functions and class methods.",
AsyncFunctionInSingleStatementContext: "Async functions can only be declared at the top level or inside a block.",
AwaitBindingIdentifier: "Can not use 'await' as identifier inside an async function.",
AwaitBindingIdentifierInStaticBlock: "Can not use 'await' as identifier inside a static block.",
AwaitExpressionFormalParameter: "'await' is not allowed in async function parameters.",
AwaitUsingNotInAsyncContext: "'await using' is only allowed within async functions and at the top levels of modules.",
AwaitNotInAsyncContext: "'await' is only allowed within async functions and at the top levels of modules.",
BadGetterArity: "A 'get' accessor must not have any formal parameters.",
BadSetterArity: "A 'set' accessor must have exactly one formal parameter.",
BadSetterRestParameter: "A 'set' accessor function argument must not be a rest parameter.",
ConstructorClassField: "Classes may not have a field named 'constructor'.",
ConstructorClassPrivateField: "Classes may not have a private field named '#constructor'.",
ConstructorIsAccessor: "Class constructor may not be an accessor.",
ConstructorIsAsync: "Constructor can't be an async function.",
ConstructorIsGenerator: "Constructor can't be a generator.",
DeclarationMissingInitializer: ({
kind
}) => `Missing initializer in ${kind} declaration.`,
DecoratorArgumentsOutsideParentheses: "Decorator arguments must be moved inside parentheses: use '@(decorator(args))' instead of '@(decorator)(args)'.",
DecoratorBeforeExport: "Decorators must be placed *before* the 'export' keyword. Remove the 'decoratorsBeforeExport: true' option to use the 'export @decorator class {}' syntax.",
DecoratorsBeforeAfterExport: "Decorators can be placed *either* before or after the 'export' keyword, but not in both locations at the same time.",
DecoratorConstructor: "Decorators can't be used with a constructor. Did you mean '@dec class { ... }'?",
DecoratorExportClass: "Decorators must be placed *after* the 'export' keyword. Remove the 'decoratorsBeforeExport: false' option to use the '@decorator export class {}' syntax.",
DecoratorSemicolon: "Decorators must not be followed by a semicolon.",
DecoratorStaticBlock: "Decorators can't be used with a static block.",
DeferImportRequiresNamespace: 'Only `import defer * as x from "./module"` is valid.',
DeletePrivateField: "Deleting a private field is not allowed.",
DestructureNamedImport: "ES2015 named imports do not destructure. Use another statement for destructuring after the import.",
DuplicateConstructor: "Duplicate constructor in the same class.",
DuplicateDefaultExport: "Only one default export allowed per module.",
DuplicateExport: ({
exportName
}) => `\`${exportName}\` has already been exported. Exported identifiers must be unique.`,
DuplicateProto: "Redefinition of __proto__ property.",
DuplicateRegExpFlags: "Duplicate regular expression flag.",
DynamicImportPhaseRequiresImportExpressions: ({
phase
}) => `'import.${phase}(...)' can only be parsed when using the 'createImportExpressions' option.`,
ElementAfterRest: "Rest element must be last element.",
EscapedCharNotAnIdentifier: "Invalid Unicode escape.",
ExportBindingIsString: ({
localName,
exportName
}) => `A string literal cannot be used as an exported binding without \`from\`.\n- Did you mean \`export { '${localName}' as '${exportName}' } from 'some-module'\`?`,
ExportDefaultFromAsIdentifier: "'from' is not allowed as an identifier after 'export default'.",
ForInOfLoopInitializer: ({
type
}) => `'${type === "ForInStatement" ? "for-in" : "for-of"}' loop variable declaration may not have an initializer.`,
ForInUsing: "For-in loop may not start with 'using' declaration.",
ForOfAsync: "The left-hand side of a for-of loop may not be 'async'.",
ForOfLet: "The left-hand side of a for-of loop may not start with 'let'.",
GeneratorInSingleStatementContext: "Generators can only be declared at the top level or inside a block.",
IllegalBreakContinue: ({
type
}) => `Unsyntactic ${type === "BreakStatement" ? "break" : "continue"}.`,
IllegalLanguageModeDirective: "Illegal 'use strict' directive in function with non-simple parameter list.",
IllegalReturn: "'return' outside of function.",
ImportAttributesUseAssert: "The `assert` keyword in import attributes is deprecated and it has been replaced by the `with` keyword. You can enable the `deprecatedImportAssert` parser plugin to suppress this error.",
ImportBindingIsString: ({
importName
}) => `A string literal cannot be used as an imported binding.\n- Did you mean \`import { "${importName}" as foo }\`?`,
ImportCallArity: `\`import()\` requires exactly one or two arguments.`,
ImportCallNotNewExpression: "Cannot use new with import(...).",
ImportCallSpreadArgument: "`...` is not allowed in `import()`.",
ImportJSONBindingNotDefault: "A JSON module can only be imported with `default`.",
ImportReflectionHasAssertion: "`import module x` cannot have assertions.",
ImportReflectionNotBinding: 'Only `import module x from "./module"` is valid.',
IncompatibleRegExpUVFlags: "The 'u' and 'v' regular expression flags cannot be enabled at the same time.",
InvalidBigIntLiteral: "Invalid BigIntLiteral.",
InvalidCodePoint: "Code point out of bounds.",
InvalidCoverInitializedName: "Invalid shorthand property initializer.",
InvalidDecimal: "Invalid decimal.",
InvalidDigit: ({
radix
}) => `Expected number in radix ${radix}.`,
InvalidEscapeSequence: "Bad character escape sequence.",
InvalidEscapeSequenceTemplate: "Invalid escape sequence in template.",
InvalidEscapedReservedWord: ({
reservedWord
}) => `Escape sequence in keyword ${reservedWord}.`,
InvalidIdentifier: ({
identifierName
}) => `Invalid identifier ${identifierName}.`,
InvalidLhs: ({
ancestor
}) => `Invalid left-hand side in ${toNodeDescription(ancestor)}.`,
InvalidLhsBinding: ({
ancestor
}) => `Binding invalid left-hand side in ${toNodeDescription(ancestor)}.`,
InvalidLhsOptionalChaining: ({
ancestor
}) => `Invalid optional chaining in the left-hand side of ${toNodeDescription(ancestor)}.`,
InvalidNumber: "Invalid number.",
InvalidOrMissingExponent: "Floating-point numbers require a valid exponent after the 'e'.",
InvalidOrUnexpectedToken: ({
unexpected
}) => `Unexpected character '${unexpected}'.`,
InvalidParenthesizedAssignment: "Invalid parenthesized assignment pattern.",
InvalidPrivateFieldResolution: ({
identifierName
}) => `Private name #${identifierName} is not defined.`,
InvalidPropertyBindingPattern: "Binding member expression.",
InvalidRecordProperty: "Only properties and spread elements are allowed in record definitions.",
InvalidRestAssignmentPattern: "Invalid rest operator's argument.",
LabelRedeclaration: ({
labelName
}) => `Label '${labelName}' is already declared.`,
LetInLexicalBinding: "'let' is disallowed as a lexically bound name.",
LineTerminatorBeforeArrow: "No line break is allowed before '=>'.",
MalformedRegExpFlags: "Invalid regular expression flag.",
MissingClassName: "A class name is required.",
MissingEqInAssignment: "Only '=' operator can be used for specifying default value.",
MissingSemicolon: "Missing semicolon.",
MissingPlugin: ({
missingPlugin
}) => `This experimental syntax requires enabling the parser plugin: ${missingPlugin.map(name => JSON.stringify(name)).join(", ")}.`,
MissingOneOfPlugins: ({
missingPlugin
}) => `This experimental syntax requires enabling one of the following parser plugin(s): ${missingPlugin.map(name => JSON.stringify(name)).join(", ")}.`,
MissingUnicodeEscape: "Expecting Unicode escape sequence \\uXXXX.",
MixingCoalesceWithLogical: "Nullish coalescing operator(??) requires parens when mixing with logical operators.",
ModuleAttributeDifferentFromType: "The only accepted module attribute is `type`.",
ModuleAttributeInvalidValue: "Only string literals are allowed as module attribute values.",
ModuleAttributesWithDuplicateKeys: ({
key
}) => `Duplicate key "${key}" is not allowed in module attributes.`,
ModuleExportNameHasLoneSurrogate: ({
surrogateCharCode
}) => `An export name cannot include a lone surrogate, found '\\u${surrogateCharCode.toString(16)}'.`,
ModuleExportUndefined: ({
localName
}) => `Export '${localName}' is not defined.`,
MultipleDefaultsInSwitch: "Multiple default clauses.",
NewlineAfterThrow: "Illegal newline after throw.",
NoCatchOrFinally: "Missing catch or finally clause.",
NumberIdentifier: "Identifier directly after number.",
NumericSeparatorInEscapeSequence: "Numeric separators are not allowed inside unicode escape sequences or hex escape sequences.",
ObsoleteAwaitStar: "'await*' has been removed from the async functions proposal. Use Promise.all() instead.",
OptionalChainingNoNew: "Constructors in/after an Optional Chain are not allowed.",
OptionalChainingNoTemplate: "Tagged Template Literals are not allowed in optionalChain.",
OverrideOnConstructor: "'override' modifier cannot appear on a constructor declaration.",
ParamDupe: "Argument name clash.",
PatternHasAccessor: "Object pattern can't contain getter or setter.",
PatternHasMethod: "Object pattern can't contain methods.",
PrivateInExpectedIn: ({
identifierName
}) => `Private names are only allowed in property accesses (\`obj.#${identifierName}\`) or in \`in\` expressions (\`#${identifierName} in obj\`).`,
PrivateNameRedeclaration: ({
identifierName
}) => `Duplicate private name #${identifierName}.`,
RecordExpressionBarIncorrectEndSyntaxType: "Record expressions ending with '|}' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'bar'.",
RecordExpressionBarIncorrectStartSyntaxType: "Record expressions starting with '{|' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'bar'.",
RecordExpressionHashIncorrectStartSyntaxType: "Record expressions starting with '#{' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'hash'.",
RecordNoProto: "'__proto__' is not allowed in Record expressions.",
RestTrailingComma: "Unexpected trailing comma after rest element.",
SloppyFunction: "In non-strict mode code, functions can only be declared at top level or inside a block.",
SloppyFunctionAnnexB: "In non-strict mode code, functions can only be declared at top level, inside a block, or as the body of an if statement.",
SourcePhaseImportRequiresDefault: 'Only `import source x from "./module"` is valid.',
StaticPrototype: "Classes may not have static property named prototype.",
SuperNotAllowed: "`super()` is only valid inside a class constructor of a subclass. Maybe a typo in the method name ('constructor') or not extending another class?",
SuperPrivateField: "Private fields can't be accessed on super.",
TrailingDecorator: "Decorators must be attached to a class element.",
TupleExpressionBarIncorrectEndSyntaxType: "Tuple expressions ending with '|]' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'bar'.",
TupleExpressionBarIncorrectStartSyntaxType: "Tuple expressions starting with '[|' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'bar'.",
TupleExpressionHashIncorrectStartSyntaxType: "Tuple expressions starting with '#[' are only allowed when the 'syntaxType' option of the 'recordAndTuple' plugin is set to 'hash'.",
UnexpectedArgumentPlaceholder: "Unexpected argument placeholder.",
UnexpectedAwaitAfterPipelineBody: 'Unexpected "await" after pipeline body; await must have parentheses in minimal proposal.',
UnexpectedDigitAfterHash: "Unexpected digit after hash token.",
UnexpectedImportExport: "'import' and 'export' may only appear at the top level.",
UnexpectedKeyword: ({
keyword
}) => `Unexpected keyword '${keyword}'.`,
UnexpectedLeadingDecorator: "Leading decorators must be attached to a class declaration.",
UnexpectedLexicalDeclaration: "Lexical declaration cannot appear in a single-statement context.",
UnexpectedNewTarget: "`new.target` can only be used in functions or class properties.",
UnexpectedNumericSeparator: "A numeric separator is only allowed between two digits.",
UnexpectedPrivateField: "Unexpected private name.",
UnexpectedReservedWord: ({
reservedWord
}) => `Unexpected reserved word '${reservedWord}'.`,
UnexpectedSuper: "'super' is only allowed in object methods and classes.",
UnexpectedToken: ({
expected,
unexpected
}) => `Unexpected token${unexpected ? ` '${unexpected}'.` : ""}${expected ? `, expected "${expected}"` : ""}`,
UnexpectedTokenUnaryExponentiation: "Illegal expression. Wrap left hand side or entire exponentiation in parentheses.",
UnexpectedUsingDeclaration: "Using declaration cannot appear in the top level when source type is `script`.",
UnsupportedBind: "Binding should be performed on object property.",
UnsupportedDecoratorExport: "A decorated export must export a class declaration.",
UnsupportedDefaultExport: "Only expressions, functions or classes are allowed as the `default` export.",
UnsupportedImport: "`import` can only be used in `import()` or `import.meta`.",
UnsupportedMetaProperty: ({
target,
onlyValidPropertyName
}) => `The only valid meta property for ${target} is ${target}.${onlyValidPropertyName}.`,
UnsupportedParameterDecorator: "Decorators cannot be used to decorate parameters.",
UnsupportedPropertyDecorator: "Decorators cannot be used to decorate object literal properties.",
UnsupportedSuper: "'super' can only be used with function calls (i.e. super()) or in property accesses (i.e. super.prop or super[prop]).",
UnterminatedComment: "Unterminated comment.",
UnterminatedRegExp: "Unterminated regular expression.",
UnterminatedString: "Unterminated string constant.",
UnterminatedTemplate: "Unterminated template.",
UsingDeclarationExport: "Using declaration cannot be exported.",
UsingDeclarationHasBindingPattern: "Using declaration cannot have destructuring patterns.",
VarRedeclaration: ({
identifierName
}) => `Identifier '${identifierName}' has already been declared.`,
YieldBindingIdentifier: "Can not use 'yield' as identifier inside a generator.",
YieldInParameter: "Yield expression is not allowed in formal parameters.",
YieldNotInGeneratorFunction: "'yield' is only allowed within generator functions.",
ZeroDigitNumericSeparator: "Numeric separator can not be used after leading 0."
};
var StrictModeErrors = {
StrictDelete: "Deleting local variable in strict mode.",
StrictEvalArguments: ({
referenceName
}) => `Assigning to '${referenceName}' in strict mode.`,
StrictEvalArgumentsBinding: ({
bindingName
}) => `Binding '${bindingName}' in strict mode.`,
StrictFunction: "In strict mode code, functions can only be declared at top level or inside a block.",
StrictNumericEscape: "The only valid numeric escape in strict mode is '\\0'.",
StrictOctalLiteral: "Legacy octal literals are not allowed in strict mode.",
StrictWith: "'with' in strict mode."
};
const UnparenthesizedPipeBodyDescriptions = new Set(["ArrowFunctionExpression", "AssignmentExpression", "ConditionalExpression", "YieldExpression"]);
var PipelineOperatorErrors = Object.assign({
PipeBodyIsTighter: "Unexpected yield after pipeline body; any yield expression acting as Hack-style pipe body must be parenthesized due to its loose operator precedence.",
PipeTopicRequiresHackPipes: 'Topic reference is used, but the pipelineOperator plugin was not passed a "proposal": "hack" or "smart" option.',
PipeTopicUnbound: "Topic reference is unbound; it must be inside a pipe body.",
PipeTopicUnconfiguredToken: ({
token
}) => `Invalid topic token ${token}. In order to use ${token} as a topic reference, the pipelineOperator plugin must be configured with { "proposal": "hack", "topicToken": "${token}" }.`,
PipeTopicUnused: "Hack-style pipe body does not contain a topic reference; Hack-style pipes must use topic at least once.",
PipeUnparenthesizedBody: ({
type
}) => `Hack-style pipe body cannot be an unparenthesized ${toNodeDescription({
type
})}; please wrap it in parentheses.`
}, {
PipelineBodyNoArrow: 'Unexpected arrow "=>" after pipeline body; arrow function in pipeline body must be parenthesized.',
PipelineBodySequenceExpression: "Pipeline body may not be a comma-separated sequence expression.",
PipelineHeadSequenceExpression: "Pipeline head should not be a comma-separated sequence expression.",
PipelineTopicUnused: "Pipeline is in topic style but does not use topic reference.",
PrimaryTopicNotAllowed: "Topic reference was used in a lexical context without topic binding.",
PrimaryTopicRequiresSmartPipeline: 'Topic reference is used, but the pipelineOperator plugin was not passed a "proposal": "hack" or "smart" option.'
});
const _excluded = ["message"];
function defineHidden(obj, key, value) {
Object.defineProperty(obj, key, {
enumerable: false,
configurable: true,
value
});
}
function toParseErrorConstructor({
toMessage,
code,
reasonCode,
syntaxPlugin
}) {
const hasMissingPlugin = reasonCode === "MissingPlugin" || reasonCode === "MissingOneOfPlugins";
{
const oldReasonCodes = {
AccessorCannotDeclareThisParameter: "AccesorCannotDeclareThisParameter",
AccessorCannotHaveTypeParameters: "AccesorCannotHaveTypeParameters",
ConstInitializerMustBeStringOrNumericLiteralOrLiteralEnumReference: "ConstInitiailizerMustBeStringOrNumericLiteralOrLiteralEnumReference",
SetAccessorCannotHaveOptionalParameter: "SetAccesorCannotHaveOptionalParameter",
SetAccessorCannotHaveRestParameter: "SetAccesorCannotHaveRestParameter",
SetAccessorCannotHaveReturnType: "SetAccesorCannotHaveReturnType"
};
if (oldReasonCodes[reasonCode]) {
reasonCode = oldReasonCodes[reasonCode];
}
}
return function constructor(loc, details) {
const error = new SyntaxError();
error.code = code;
error.reasonCode = reasonCode;
error.loc = loc;
error.pos = loc.index;
error.syntaxPlugin = syntaxPlugin;
if (hasMissingPlugin) {
error.missingPlugin = details.missingPlugin;
}
defineHidden(error, "clone", function clone(overrides = {}) {
var _overrides$loc;
const {
line,
column,
index
} = (_overrides$loc = overrides.loc) != null ? _overrides$loc : loc;
return constructor(new Position(line, column, index), Object.assign({}, details, overrides.details));
});
defineHidden(error, "details", details);
Object.defineProperty(error, "message", {
configurable: true,
get() {
const message = `${toMessage(details)} (${loc.line}:${loc.column})`;
this.message = message;
return message;
},
set(value) {
Object.defineProperty(this, "message", {
value,
writable: true
});
}
});
return error;
};
}
function ParseErrorEnum(argument, syntaxPlugin) {
if (Array.isArray(argument)) {
return parseErrorTemplates => ParseErrorEnum(parseErrorTemplates, argument[0]);
}
const ParseErrorConstructors = {};
for (const reasonCode of Object.keys(argument)) {
const template = argument[reasonCode];
const _ref = typeof template === "string" ? {
message: () => template
} : typeof template === "function" ? {
message: template
} : template,
{
message
} = _ref,
rest = _objectWithoutPropertiesLoose(_ref, _excluded);
const toMessage = typeof message === "string" ? () => message : message;
ParseErrorConstructors[reasonCode] = toParseErrorConstructor(Object.assign({
code: "BABEL_PARSER_SYNTAX_ERROR",
reasonCode,
toMessage
}, syntaxPlugin ? {
syntaxPlugin
} : {}, rest));
}
return ParseErrorConstructors;
}
const Errors = Object.assign({}, ParseErrorEnum(ModuleErrors), ParseErrorEnum(StandardErrors), ParseErrorEnum(StrictModeErrors), ParseErrorEnum`pipelineOperator`(PipelineOperatorErrors));
function createDefaultOptions() {
return {
sourceType: "script",
sourceFilename: undefined,
startIndex: 0,
startColumn: 0,
startLine: 1,
allowAwaitOutsideFunction: false,
allowReturnOutsideFunction: false,
allowNewTargetOutsideFunction: false,
allowImportExportEverywhere: false,
allowSuperOutsideMethod: false,
allowUndeclaredExports: false,
allowYieldOutsideFunction: false,
plugins: [],
strictMode: null,
ranges: false,
tokens: false,
createImportExpressions: false,
createParenthesizedExpressions: false,
errorRecovery: false,
attachComment: true,
annexB: true
};
}
function getOptions(opts) {
const options = createDefaultOptions();
if (opts == null) {
return options;
}
if (opts.annexB != null && opts.annexB !== false) {
throw new Error("The `annexB` option can only be set to `false`.");
}
for (const key of Object.keys(options)) {
if (opts[key] != null) options[key] = opts[key];
}
if (options.startLine === 1) {
if (opts.startIndex == null && options.startColumn > 0) {
options.startIndex = options.startColumn;
} else if (opts.startColumn == null && options.startIndex > 0) {
options.startColumn = options.startIndex;
}
} else if (opts.startColumn == null || opts.startIndex == null) {
if (opts.startIndex != null) {
throw new Error("With a `startLine > 1` you must also specify `startIndex` and `startColumn`.");
}
}
return options;
}
const {
defineProperty
} = Object;
const toUnenumerable = (object, key) => {
if (object) {
defineProperty(object, key, {
enumerable: false,
value: object[key]
});
}
};
function toESTreeLocation(node) {
toUnenumerable(node.loc.start, "index");
toUnenumerable(node.loc.end, "index");
return node;
}
var estree = superClass => class ESTreeParserMixin extends superClass {
parse() {
const file = toESTreeLocation(super.parse());
if (this.optionFlags & 256) {
file.tokens = file.tokens.map(toESTreeLocation);
}
return file;
}
parseRegExpLiteral({
pattern,
flags
}) {
let regex = null;
try {
regex = new RegExp(pattern, flags);
} catch (_) {}
const node = this.estreeParseLiteral(regex);
node.regex = {
pattern,
flags
};
return node;
}
parseBigIntLiteral(value) {
let bigInt;
try {
bigInt = BigInt(value);
} catch (_unused) {
bigInt = null;
}
const node = this.estreeParseLiteral(bigInt);
node.bigint = String(node.value || value);
return node;
}
parseDecimalLiteral(value) {
const decimal = null;
const node = this.estreeParseLiteral(decimal);
node.decimal = String(node.value || value);
return node;
}
estreeParseLiteral(value) {
return this.parseLiteral(value, "Literal");
}
parseStringLiteral(value) {
return this.estreeParseLiteral(value);
}
parseNumericLiteral(value) {
return this.estreeParseLiteral(value);
}
parseNullLiteral() {
return this.estreeParseLiteral(null);
}
parseBooleanLiteral(value) {
return this.estreeParseLiteral(value);
}
directiveToStmt(directive) {
const expression = directive.value;
delete directive.value;
expression.type = "Literal";
expression.raw = expression.extra.raw;
expression.value = expression.extra.expressionValue;
const stmt = directive;
stmt.type = "ExpressionStatement";
stmt.expression = expression;
stmt.directive = expression.extra.rawValue;
delete expression.extra;
return stmt;
}
initFunction(node, isAsync) {
super.initFunction(node, isAsync);
node.expression = false;
}
checkDeclaration(node) {
if (node != null && this.isObjectProperty(node)) {
this.checkDeclaration(node.value);
} else {
super.checkDeclaration(node);
}
}
getObjectOrClassMethodParams(method) {
return method.value.params;
}
isValidDirective(stmt) {
var _stmt$expression$extr;
return stmt.type === "ExpressionStatement" && stmt.expression.type === "Literal" && typeof stmt.expression.value === "string" && !((_stmt$expression$extr = stmt.expression.extra) != null && _stmt$expression$extr.parenthesized);
}
parseBlockBody(node, allowDirectives, topLevel, end, afterBlockParse) {
super.parseBlockBody(node, allowDirectives, topLevel, end, afterBlockParse);
const directiveStatements = node.directives.map(d => this.directiveToStmt(d));
node.body = directiveStatements.concat(node.body);
delete node.directives;
}
parsePrivateName() {
const node = super.parsePrivateName();
{
if (!this.getPluginOption("estree", "classFeatures")) {
return node;
}
}
return this.convertPrivateNameToPrivateIdentifier(node);
}
convertPrivateNameToPrivateIdentifier(node) {
const name = super.getPrivateNameSV(node);
node = node;
delete node.id;
node.name = name;
node.type = "PrivateIdentifier";
return node;
}
isPrivateName(node) {
{
if (!this.getPluginOption("estree", "classFeatures")) {
return super.isPrivateName(node);
}
}
return node.type === "PrivateIdentifier";
}
getPrivateNameSV(node) {
{
if (!this.getPluginOption("estree", "classFeatures")) {
return super.getPrivateNameSV(node);
}
}
return node.name;
}
parseLiteral(value, type) {
const node = super.parseLiteral(value, type);
node.raw = node.extra.raw;
delete node.extra;
return node;
}
parseFunctionBody(node, allowExpression, isMethod = false) {
super.parseFunctionBody(node, allowExpression, isMethod);
node.expression = node.body.type !== "BlockStatement";
}
parseMethod(node, isGenerator, isAsync, isConstructor, allowDirectSuper, type, inClassScope = false) {
let funcNode = this.startNode();
funcNode.kind = node.kind;
funcNode = super.parseMethod(funcNode, isGenerator, isAsync, isConstructor, allowDirectSuper, type, inClassScope);
funcNode.type = "FunctionExpression";
delete funcNode.kind;
node.value = funcNode;
const {
typeParameters
} = node;
if (typeParameters) {
delete node.typeParameters;
funcNode.typeParameters = typeParameters;
this.resetStartLocationFromNode(funcNode, typeParameters);
}
if (type === "ClassPrivateMethod") {
node.computed = false;
}
return this.finishNode(node, "MethodDefinition");
}
nameIsConstructor(key) {
if (key.type === "Literal") return key.value === "constructor";
return super.nameIsConstructor(key);
}
parseClassProperty(...args) {
const propertyNode = super.parseClassProperty(...args);
{
if (!this.getPluginOption("estree", "classFeatures")) {
return propertyNode;
}
}
{
propertyNode.type = "PropertyDefinition";
}
return propertyNode;
}
parseClassPrivateProperty(...args) {
const propertyNode = super.parseClassPrivateProperty(...args);
{
if (!this.getPluginOption("estree", "classFeatures")) {
return propertyNode;
}
}
{
propertyNode.type = "PropertyDefinition";
}
propertyNode.computed = false;
return propertyNode;
}
parseClassAccessorProperty(node) {
const accessorPropertyNode = super.parseClassAccessorProperty(node);
{
if (!this.getPluginOption("estree", "classFeatures")) {
return accessorPropertyNode;
}
}
accessorPropertyNode.type = "AccessorProperty";
return accessorPropertyNode;
}
parseObjectMethod(prop, isGenerator, isAsync, isPattern, isAccessor) {
const node = super.parseObjectMethod(prop, isGenerator, isAsync, isPattern, isAccessor);
if (node) {
node.type = "Property";
if (node.kind === "method") {
node.kind = "init";
}
node.shorthand = false;
}
return node;
}
parseObjectProperty(prop, startLoc, isPattern, refExpressionErrors) {
const node = super.parseObjectProperty(prop, startLoc, isPattern, refExpressionErrors);
if (node) {
node.kind = "init";
node.type = "Property";
}
return node;
}
isValidLVal(type, isUnparenthesizedInAssign, binding) {
return type === "Property" ? "value" : super.isValidLVal(type, isUnparenthesizedInAssign, binding);
}
isAssignable(node, isBinding) {
if (node != null && this.isObjectProperty(node)) {
return this.isAssignable(node.value, isBinding);
}
return super.isAssignable(node, isBinding);
}
toAssignable(node, isLHS = false) {
if (node != null && this.isObjectProperty(node)) {
const {
key,
value
} = node;
if (this.isPrivateName(key)) {
this.classScope.usePrivateName(this.getPrivateNameSV(key), key.loc.start);
}
this.toAssignable(value, isLHS);
} else {
super.toAssignable(node, isLHS);
}
}
toAssignableObjectExpressionProp(prop, isLast, isLHS) {
if (prop.type === "Property" && (prop.kind === "get" || prop.kind === "set")) {
this.raise(Errors.PatternHasAccessor, prop.key);
} else if (prop.type === "Property" && prop.method) {
this.raise(Errors.PatternHasMethod, prop.key);
} else {
super.toAssignableObjectExpressionProp(prop, isLast, isLHS);
}
}
finishCallExpression(unfinished, optional) {
const node = super.finishCallExpression(unfinished, optional);
if (node.callee.type === "Import") {
var _ref, _ref2;
node.type = "ImportExpression";
node.source = node.arguments[0];
node.options = (_ref = node.arguments[1]) != null ? _ref : null;
node.attributes = (_ref2 = node.arguments[1]) != null ? _ref2 : null;
delete node.arguments;
delete node.callee;
}
return node;
}
toReferencedArguments(node) {
if (node.type === "ImportExpression") {
return;
}
super.toReferencedArguments(node);
}
parseExport(unfinished, decorators) {
const exportStartLoc = this.state.lastTokStartLoc;
const node = super.parseExport(unfinished, decorators);
switch (node.type) {
case "ExportAllDeclaration":
node.exported = null;
break;
case "ExportNamedDeclaration":
if (node.specifiers.length === 1 && node.specifiers[0].type === "ExportNamespaceSpecifier") {
node.type = "ExportAllDeclaration";
node.exported = node.specifiers[0].exported;
delete node.specifiers;
}
case "ExportDefaultDeclaration":
{
var _declaration$decorato;
const {
declaration
} = node;
if ((declaration == null ? void 0 : declaration.type) === "ClassDeclaration" && ((_declaration$decorato = declaration.decorators) == null ? void 0 : _declaration$decorato.length) > 0 && declaration.start === node.start) {
this.resetStartLocation(node, exportStartLoc);
}
}
break;
}
return node;
}
parseSubscript(base, startLoc, noCalls, state) {
const node = super.parseSubscript(base, startLoc, noCalls, state);
if (state.optionalChainMember) {
if (node.type === "OptionalMemberExpression" || node.type === "OptionalCallExpression") {
node.type = node.type.substring(8);
}
if (state.stop) {
const chain = this.startNodeAtNode(node);
chain.expression = node;
return this.finishNode(chain, "ChainExpression");
}
} else if (node.type === "MemberExpression" || node.type === "CallExpression") {
node.optional = false;
}
return node;
}
isOptionalMemberExpression(node) {
if (node.type === "ChainExpression") {
return node.expression.type === "MemberExpression";
}
return super.isOptionalMemberExpression(node);
}
hasPropertyAsPrivateName(node) {
if (node.type === "ChainExpression") {
node = node.expression;
}
return super.hasPropertyAsPrivateName(node);
}
isObjectProperty(node) {
return node.type === "Property" && node.kind === "init" && !node.method;
}
isObjectMethod(node) {
return node.type === "Property" && (node.method || node.kind === "get" || node.kind === "set");
}
finishNodeAt(node, type, endLoc) {
return toESTreeLocation(super.finishNodeAt(node, type, endLoc));
}
resetStartLocation(node, startLoc) {
super.resetStartLocation(node, startLoc);
toESTreeLocation(node);
}
resetEndLocation(node, endLoc = this.state.lastTokEndLoc) {
super.resetEndLocation(node, endLoc);
toESTreeLocation(node);
}
};
class TokContext {
constructor(token, preserveSpace) {
this.token = void 0;
this.preserveSpace = void 0;
this.token = token;
this.preserveSpace = !!preserveSpace;
}
}
const types = {
brace: new TokContext("{"),
j_oTag: new TokContext("<tag"),
j_cTag: new TokContext("</tag"),
j_expr: new TokContext("<tag>...</tag>", true)
};
{
types.template = new TokContext("`", true);
}
const beforeExpr = true;
const startsExpr = true;
const isLoop = true;
const isAssign = true;
const prefix = true;
const postfix = true;
class ExportedTokenType {
constructor(label, conf = {}) {
this.label = void 0;
this.keyword = void 0;
this.beforeExpr = void 0;
this.startsExpr = void 0;
this.rightAssociative = void 0;
this.isLoop = void 0;
this.isAssign = void 0;
this.prefix = void 0;
this.postfix = void 0;
this.binop = void 0;
this.label = label;
this.keyword = conf.keyword;
this.beforeExpr = !!conf.beforeExpr;
this.startsExpr = !!conf.startsExpr;
this.rightAssociative = !!conf.rightAssociative;
this.isLoop = !!conf.isLoop;
this.isAssign = !!conf.isAssign;
this.prefix = !!conf.prefix;
this.postfix = !!conf.postfix;
this.binop = conf.binop != null ? conf.binop : null;
{
this.updateContext = null;
}
}
}
const keywords$1 = new Map();
function createKeyword(name, options = {}) {
options.keyword = name;
const token = createToken(name, options);
keywords$1.set(name, token);
return token;
}
function createBinop(name, binop) {
return createToken(name, {
beforeExpr,
binop
});
}
let tokenTypeCounter = -1;
const tokenTypes = [];
const tokenLabels = [];
const tokenBinops = [];
const tokenBeforeExprs = [];
const tokenStartsExprs = [];
const tokenPrefixes = [];
function createToken(name, options = {}) {
var _options$binop, _options$beforeExpr, _options$startsExpr, _options$prefix;
++tokenTypeCounter;
tokenLabels.push(name);
tokenBinops.push((_options$binop = options.binop) != null ? _options$binop : -1);
tokenBeforeExprs.push((_options$beforeExpr = options.beforeExpr) != null ? _options$beforeExpr : false);
tokenStartsExprs.push((_options$startsExpr = options.startsExpr) != null ? _options$startsExpr : false);
tokenPrefixes.push((_options$prefix = options.prefix) != null ? _options$prefix : false);
tokenTypes.push(new ExportedTokenType(name, options));
return tokenTypeCounter;
}
function createKeywordLike(name, options = {}) {
var _options$binop2, _options$beforeExpr2, _options$startsExpr2, _options$prefix2;
++tokenTypeCounter;
keywords$1.set(name, tokenTypeCounter);
tokenLabels.push(name);
tokenBinops.push((_options$binop2 = options.binop) != null ? _options$binop2 : -1);
tokenBeforeExprs.push((_options$beforeExpr2 = options.beforeExpr) != null ? _options$beforeExpr2 : false);
tokenStartsExprs.push((_options$startsExpr2 = options.startsExpr) != null ? _options$startsExpr2 : false);
tokenPrefixes.push((_options$prefix2 = options.prefix) != null ? _options$prefix2 : false);
tokenTypes.push(new ExportedTokenType("name", options));
return tokenTypeCounter;
}
const tt = {
bracketL: createToken("[", {
beforeExpr,
startsExpr
}),
bracketHashL: createToken("#[", {
beforeExpr,
startsExpr
}),
bracketBarL: createToken("[|", {
beforeExpr,
startsExpr
}),
bracketR: createToken("]"),
bracketBarR: createToken("|]"),
braceL: createToken("{", {
beforeExpr,
startsExpr
}),
braceBarL: createToken("{|", {
beforeExpr,
startsExpr
}),
braceHashL: createToken("#{", {
beforeExpr,
startsExpr
}),
braceR: createToken("}"),
braceBarR: createToken("|}"),
parenL: createToken("(", {
beforeExpr,
startsExpr
}),
parenR: createToken(")"),
comma: createToken(",", {
beforeExpr
}),
semi: createToken(";", {
beforeExpr
}),
colon: createToken(":", {
beforeExpr
}),
doubleColon: createToken("::", {
beforeExpr
}),
dot: createToken("."),
question: createToken("?", {
beforeExpr
}),
questionDot: createToken("?."),
arrow: createToken("=>", {
beforeExpr
}),
template: createToken("template"),
ellipsis: createToken("...", {
beforeExpr
}),
backQuote: createToken("`", {
startsExpr
}),
dollarBraceL: createToken("${", {
beforeExpr,
startsExpr
}),
templateTail: createToken("...`", {
startsExpr
}),
templateNonTail: createToken("...${", {
beforeExpr,
startsExpr
}),
at: createToken("@"),
hash: createToken("#", {
startsExpr
}),
interpreterDirective: createToken("#!..."),
eq: createToken("=", {
beforeExpr,
isAssign
}),
assign: createToken("_=", {
beforeExpr,
isAssign
}),
slashAssign: createToken("_=", {
beforeExpr,
isAssign
}),
xorAssign: createToken("_=", {
beforeExpr,
isAssign
}),
moduloAssign: createToken("_=", {
beforeExpr,
isAssign
}),
incDec: createToken("++/--", {
prefix,
postfix,
startsExpr
}),
bang: createToken("!", {
beforeExpr,
prefix,
startsExpr
}),
tilde: createToken("~", {
beforeExpr,
prefix,
startsExpr
}),
doubleCaret: createToken("^^", {
startsExpr
}),
doubleAt: createToken("@@", {
startsExpr
}),
pipeline: createBinop("|>", 0),
nullishCoalescing: createBinop("??", 1),
logicalOR: createBinop("||", 1),
logicalAND: createBinop("&&", 2),
bitwiseOR: createBinop("|", 3),
bitwiseXOR: createBinop("^", 4),
bitwiseAND: createBinop("&", 5),
equality: createBinop("==/!=/===/!==", 6),
lt: createBinop("</>/<=/>=", 7),
gt: createBinop("</>/<=/>=", 7),
relational: createBinop("</>/<=/>=", 7),
bitShift: createBinop("<</>>/>>>", 8),
bitShiftL: createBinop("<</>>/>>>", 8),
bitShiftR: createBinop("<</>>/>>>", 8),
plusMin: createToken("+/-", {
beforeExpr,
binop: 9,
prefix,
startsExpr
}),
modulo: createToken("%", {
binop: 10,
startsExpr
}),
star: createToken("*", {
binop: 10
}),
slash: createBinop("/", 10),
exponent: createToken("**", {
beforeExpr,
binop: 11,
rightAssociative: true
}),
_in: createKeyword("in", {
beforeExpr,
binop: 7
}),
_instanceof: createKeyword("instanceof", {
beforeExpr,
binop: 7
}),
_break: createKeyword("break"),
_case: createKeyword("case", {
beforeExpr
}),
_catch: createKeyword("catch"),
_continue: createKeyword("continue"),
_debugger: createKeyword("debugger"),
_default: createKeyword("default", {
beforeExpr
}),
_else: createKeyword("else", {
beforeExpr
}),
_finally: createKeyword("finally"),
_function: createKeyword("function", {
startsExpr
}),
_if: createKeyword("if"),
_return: createKeyword("return", {
beforeExpr
}),
_switch: createKeyword("switch"),
_throw: createKeyword("throw", {
beforeExpr,
prefix,
startsExpr
}),
_try: createKeyword("try"),
_var: createKeyword("var"),
_const: createKeyword("const"),
_with: createKeyword("with"),
_new: createKeyword("new", {
beforeExpr,
startsExpr
}),
_this: createKeyword("this", {
startsExpr
}),
_super: createKeyword("super", {
startsExpr
}),
_class: createKeyword("class", {
startsExpr
}),
_extends: createKeyword("extends", {
beforeExpr
}),
_export: createKeyword("export"),
_import: createKeyword("import", {
startsExpr
}),
_null: createKeyword("null", {
startsExpr
}),
_true: createKeyword("true", {
startsExpr
}),
_false: createKeyword("false", {
startsExpr
}),
_typeof: createKeyword("typeof", {
beforeExpr,
prefix,
startsExpr
}),
_void: createKeyword("void", {
beforeExpr,
prefix,
startsExpr
}),
_delete: createKeyword("delete", {
beforeExpr,
prefix,
startsExpr
}),
_do: createKeyword("do", {
isLoop,
beforeExpr
}),
_for: createKeyword("for", {
isLoop
}),
_while: createKeyword("while", {
isLoop
}),
_as: createKeywordLike("as", {
startsExpr
}),
_assert: createKeywordLike("assert", {
startsExpr
}),
_async: createKeywordLike("async", {
startsExpr
}),
_await: createKeywordLike("await", {
startsExpr
}),
_defer: createKeywordLike("defer", {
startsExpr
}),
_from: createKeywordLike("from", {
startsExpr
}),
_get: createKeywordLike("get", {
startsExpr
}),
_let: createKeywordLike("let", {
startsExpr
}),
_meta: createKeywordLike("meta", {
startsExpr
}),
_of: createKeywordLike("of", {
startsExpr
}),
_sent: createKeywordLike("sent", {
startsExpr
}),
_set: createKeywordLike("set", {
startsExpr
}),
_source: createKeywordLike("source", {
startsExpr
}),
_static: createKeywordLike("static", {
startsExpr
}),
_using: createKeywordLike("using", {
startsExpr
}),
_yield: createKeywordLike("yield", {
startsExpr
}),
_asserts: createKeywordLike("asserts", {
startsExpr
}),
_checks: createKeywordLike("checks", {
startsExpr
}),
_exports: createKeywordLike("exports", {
startsExpr
}),
_global: createKeywordLike("global", {
startsExpr
}),
_implements: createKeywordLike("implements", {
startsExpr
}),
_intrinsic: createKeywordLike("intrinsic", {
startsExpr
}),
_infer: createKeywordLike("infer", {
startsExpr
}),
_is: createKeywordLike("is", {
startsExpr
}),
_mixins: createKeywordLike("mixins", {
startsExpr
}),
_proto: createKeywordLike("proto", {
startsExpr
}),
_require: createKeywordLike("require", {
startsExpr
}),
_satisfies: createKeywordLike("satisfies", {
startsExpr
}),
_keyof: createKeywordLike("keyof", {
startsExpr
}),
_readonly: createKeywordLike("readonly", {
startsExpr
}),
_unique: createKeywordLike("unique", {
startsExpr
}),
_abstract: createKeywordLike("abstract", {
startsExpr
}),
_declare: createKeywordLike("declare", {
startsExpr
}),
_enum: createKeywordLike("enum", {
startsExpr
}),
_module: createKeywordLike("module", {
startsExpr
}),
_namespace: createKeywordLike("namespace", {
startsExpr
}),
_interface: createKeywordLike("interface", {
startsExpr
}),
_type: createKeywordLike("type", {
startsExpr
}),
_opaque: createKeywordLike("opaque", {
startsExpr
}),
name: createToken("name", {
startsExpr
}),
placeholder: createToken("%%", {
startsExpr: true
}),
string: createToken("string", {
startsExpr
}),
num: createToken("num", {
startsExpr
}),
bigint: createToken("bigint", {
startsExpr
}),
decimal: createToken("decimal", {
startsExpr
}),
regexp: createToken("regexp", {
startsExpr
}),
privateName: createToken("#name", {
startsExpr
}),
eof: createToken("eof"),
jsxName: createToken("jsxName"),
jsxText: createToken("jsxText", {
beforeExpr: true
}),
jsxTagStart: createToken("jsxTagStart", {
startsExpr: true
}),
jsxTagEnd: createToken("jsxTagEnd")
};
function tokenIsIdentifier(token) {
return token >= 93 && token <= 133;
}
function tokenKeywordOrIdentifierIsKeyword(token) {
return token <= 92;
}
function tokenIsKeywordOrIdentifier(token) {
return token >= 58 && token <= 133;
}
function tokenIsLiteralPropertyName(token) {
return token >= 58 && token <= 137;
}
function tokenComesBeforeExpression(token) {
return tokenBeforeExprs[token];
}
function tokenCanStartExpression(token) {
return tokenStartsExprs[token];
}
function tokenIsAssignment(token) {
return token >= 29 && token <= 33;
}
function tokenIsFlowInterfaceOrTypeOrOpaque(token) {
return token >= 129 && token <= 131;
}
function tokenIsLoop(token) {
return token >= 90 && token <= 92;
}
function tokenIsKeyword(token) {
return token >= 58 && token <= 92;
}
function tokenIsOperator(token) {
return token >= 39 && token <= 59;
}
function tokenIsPostfix(token) {
return token === 34;
}
function tokenIsPrefix(token) {
return tokenPrefixes[token];
}
function tokenIsTSTypeOperator(token) {
return token >= 121 && token <= 123;
}
function tokenIsTSDeclarationStart(token) {
return token >= 124 && token <= 130;
}
function tokenLabelName(token) {
return tokenLabels[token];
}
function tokenOperatorPrecedence(token) {
return tokenBinops[token];
}
function tokenIsRightAssociative(token) {
return token === 57;
}
function tokenIsTemplate(token) {
return token >= 24 && token <= 25;
}
function getExportedToken(token) {
return tokenTypes[token];
}
{
tokenTypes[8].updateContext = context => {
context.pop();
};
tokenTypes[5].updateContext = tokenTypes[7].updateContext = tokenTypes[23].updateContext = context => {
context.push(types.brace);
};
tokenTypes[22].updateContext = context => {
if (context[context.length - 1] === types.template) {
context.pop();
} else {
context.push(types.template);
}
};
tokenTypes[143].updateContext = context => {
context.push(types.j_expr, types.j_oTag);
};
}
let nonASCIIidentifierStartChars = "\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u037f\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u052f\u0531-\u0556\u0559\u0560-\u0588\u05d0-\u05ea\u05ef-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u0860-\u086a\u0870-\u0887\u0889-\u088e\u08a0-\u08c9\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0980\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u09fc\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0af9\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c39\u0c3d\u0c58-\u0c5a\u0c5d\u0c60\u0c61\u0c80\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cdd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d04-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d54-\u0d56\u0d5f-\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e86-\u0e8a\u0e8c-\u0ea3\u0ea5\u0ea7-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f5\u13f8-\u13fd\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f8\u1700-\u1711\u171f-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1878\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191e\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19b0-\u19c9\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4c\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1c80-\u1c8a\u1c90-\u1cba\u1cbd-\u1cbf\u1ce9-\u1cec\u1cee-\u1cf3\u1cf5\u1cf6\u1cfa\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2118-\u211d\u2124\u2126\u2128\u212a-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309b-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312f\u3131-\u318e\u31a0-\u31bf\u31f0-\u31ff\u3400-\u4dbf\u4e00-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua69d\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua7cd\ua7d0\ua7d1\ua7d3\ua7d5-\ua7dc\ua7f2-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua8fd\ua8fe\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\ua9e0-\ua9e4\ua9e6-\ua9ef\ua9fa-\ua9fe\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa7e-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uab30-\uab5a\uab5c-\uab69\uab70-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc";
let nonASCIIidentifierChars = "\xb7\u0300-\u036f\u0387\u0483-\u0487\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u0669\u0670\u06d6-\u06dc\u06df-\u06e4\u06e7\u06e8\u06ea-\u06ed\u06f0-\u06f9\u0711\u0730-\u074a\u07a6-\u07b0\u07c0-\u07c9\u07eb-\u07f3\u07fd\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0859-\u085b\u0897-\u089f\u08ca-\u08e1\u08e3-\u0903\u093a-\u093c\u093e-\u094f\u0951-\u0957\u0962\u0963\u0966-\u096f\u0981-\u0983\u09bc\u09be-\u09c4\u09c7\u09c8\u09cb-\u09cd\u09d7\u09e2\u09e3\u09e6-\u09ef\u09fe\u0a01-\u0a03\u0a3c\u0a3e-\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a66-\u0a71\u0a75\u0a81-\u0a83\u0abc\u0abe-\u0ac5\u0ac7-\u0ac9\u0acb-\u0acd\u0ae2\u0ae3\u0ae6-\u0aef\u0afa-\u0aff\u0b01-\u0b03\u0b3c\u0b3e-\u0b44\u0b47\u0b48\u0b4b-\u0b4d\u0b55-\u0b57\u0b62\u0b63\u0b66-\u0b6f\u0b82\u0bbe-\u0bc2\u0bc6-\u0bc8\u0bca-\u0bcd\u0bd7\u0be6-\u0bef\u0c00-\u0c04\u0c3c\u0c3e-\u0c44\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0c66-\u0c6f\u0c81-\u0c83\u0cbc\u0cbe-\u0cc4\u0cc6-\u0cc8\u0cca-\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0ce6-\u0cef\u0cf3\u0d00-\u0d03\u0d3b\u0d3c\u0d3e-\u0d44\u0d46-\u0d48\u0d4a-\u0d4d\u0d57\u0d62\u0d63\u0d66-\u0d6f\u0d81-\u0d83\u0dca\u0dcf-\u0dd4\u0dd6\u0dd8-\u0ddf\u0de6-\u0def\u0df2\u0df3\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0e50-\u0e59\u0eb1\u0eb4-\u0ebc\u0ec8-\u0ece\u0ed0-\u0ed9\u0f18\u0f19\u0f20-\u0f29\u0f35\u0f37\u0f39\u0f3e\u0f3f\u0f71-\u0f84\u0f86\u0f87\u0f8d-\u0f97\u0f99-\u0fbc\u0fc6\u102b-\u103e\u1040-\u1049\u1056-\u1059\u105e-\u1060\u1062-\u1064\u1067-\u106d\u1071-\u1074\u1082-\u108d\u108f-\u109d\u135d-\u135f\u1369-\u1371\u1712-\u1715\u1732-\u1734\u1752\u1753\u1772\u1773\u17b4-\u17d3\u17dd\u17e0-\u17e9\u180b-\u180d\u180f-\u1819\u18a9\u1920-\u192b\u1930-\u193b\u1946-\u194f\u19d0-\u19da\u1a17-\u1a1b\u1a55-\u1a5e\u1a60-\u1a7c\u1a7f-\u1a89\u1a90-\u1a99\u1ab0-\u1abd\u1abf-\u1ace\u1b00-\u1b04\u1b34-\u1b44\u1b50-\u1b59\u1b6b-\u1b73\u1b80-\u1b82\u1ba1-\u1bad\u1bb0-\u1bb9\u1be6-\u1bf3\u1c24-\u1c37\u1c40-\u1c49\u1c50-\u1c59\u1cd0-\u1cd2\u1cd4-\u1ce8\u1ced\u1cf4\u1cf7-\u1cf9\u1dc0-\u1dff\u200c\u200d\u203f\u2040\u2054\u20d0-\u20dc\u20e1\u20e5-\u20f0\u2cef-\u2cf1\u2d7f\u2de0-\u2dff\u302a-\u302f\u3099\u309a\u30fb\ua620-\ua629\ua66f\ua674-\ua67d\ua69e\ua69f\ua6f0\ua6f1\ua802\ua806\ua80b\ua823-\ua827\ua82c\ua880\ua881\ua8b4-\ua8c5\ua8d0-\ua8d9\ua8e0-\ua8f1\ua8ff-\ua909\ua926-\ua92d\ua947-\ua953\ua980-\ua983\ua9b3-\ua9c0\ua9d0-\ua9d9\ua9e5\ua9f0-\ua9f9\uaa29-\uaa36\uaa43\uaa4c\uaa4d\uaa50-\uaa59\uaa7b-\uaa7d\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uaaeb-\uaaef\uaaf5\uaaf6\uabe3-\uabea\uabec\uabed\uabf0-\uabf9\ufb1e\ufe00-\ufe0f\ufe20-\ufe2f\ufe33\ufe34\ufe4d-\ufe4f\uff10-\uff19\uff3f\uff65";
const nonASCIIidentifierStart = new RegExp("[" + nonASCIIidentifierStartChars + "]");
const nonASCIIidentifier = new RegExp("[" + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "]");
nonASCIIidentifierStartChars = nonASCIIidentifierChars = null;
const astralIdentifierStartCodes = [0, 11, 2, 25, 2, 18, 2, 1, 2, 14, 3, 13, 35, 122, 70, 52, 268, 28, 4, 48, 48, 31, 14, 29, 6, 37, 11, 29, 3, 35, 5, 7, 2, 4, 43, 157, 19, 35, 5, 35, 5, 39, 9, 51, 13, 10, 2, 14, 2, 6, 2, 1, 2, 10, 2, 14, 2, 6, 2, 1, 4, 51, 13, 310, 10, 21, 11, 7, 25, 5, 2, 41, 2, 8, 70, 5, 3, 0, 2, 43, 2, 1, 4, 0, 3, 22, 11, 22, 10, 30, 66, 18, 2, 1, 11, 21, 11, 25, 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, 39, 27, 10, 22, 251, 41, 7, 1, 17, 2, 60, 28, 11, 0, 9, 21, 43, 17, 47, 20, 28, 22, 13, 52, 58, 1, 3, 0, 14, 44, 33, 24, 27, 35, 30, 0, 3, 0, 9, 34, 4, 0, 13, 47, 15, 3, 22, 0, 2, 0, 36, 17, 2, 24, 20, 1, 64, 6, 2, 0, 2, 3, 2, 14, 2, 9, 8, 46, 39, 7, 3, 1, 3, 21, 2, 6, 2, 1, 2, 4, 4, 0, 19, 0, 13, 4, 31, 9, 2, 0, 3, 0, 2, 37, 2, 0, 26, 0, 2, 0, 45, 52, 19, 3, 21, 2, 31, 47, 21, 1, 2, 0, 185, 46, 42, 3, 37, 47, 21, 0, 60, 42, 14, 0, 72, 26, 38, 6, 186, 43, 117, 63, 32, 7, 3, 0, 3, 7, 2, 1, 2, 23, 16, 0, 2, 0, 95, 7, 3, 38, 17, 0, 2, 0, 29, 0, 11, 39, 8, 0, 22, 0, 12, 45, 20, 0, 19, 72, 200, 32, 32, 8, 2, 36, 18, 0, 50, 29, 113, 6, 2, 1, 2, 37, 22, 0, 26, 5, 2, 1, 2, 31, 15, 0, 328, 18, 16, 0, 2, 12, 2, 33, 125, 0, 80, 921, 103, 110, 18, 195, 2637, 96, 16, 1071, 18, 5, 26, 3994, 6, 582, 6842, 29, 1763, 568, 8, 30, 18, 78, 18, 29, 19, 47, 17, 3, 32, 20, 6, 18, 433, 44, 212, 63, 129, 74, 6, 0, 67, 12, 65, 1, 2, 0, 29, 6135, 9, 1237, 42, 9, 8936, 3, 2, 6, 2, 1, 2, 290, 16, 0, 30, 2, 3, 0, 15, 3, 9, 395, 2309, 106, 6, 12, 4, 8, 8, 9, 5991, 84, 2, 70, 2, 1, 3, 0, 3, 1, 3, 3, 2, 11, 2, 0, 2, 6, 2, 64, 2, 3, 3, 7, 2, 6, 2, 27, 2, 3, 2, 4, 2, 0, 4, 6, 2, 339, 3, 24, 2, 24, 2, 30, 2, 24, 2, 30, 2, 24, 2, 30, 2, 24, 2, 30, 2, 24, 2, 7, 1845, 30, 7, 5, 262, 61, 147, 44, 11, 6, 17, 0, 322, 29, 19, 43, 485, 27, 229, 29, 3, 0, 496, 6, 2, 3, 2, 1, 2, 14, 2, 196, 60, 67, 8, 0, 1205, 3, 2, 26, 2, 1, 2, 0, 3, 0, 2, 9, 2, 3, 2, 0, 2, 0, 7, 0, 5, 0, 2, 0, 2, 0, 2, 2, 2, 1, 2, 0, 3, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 1, 2, 0, 3, 3, 2, 6, 2, 3, 2, 3, 2, 0, 2, 9, 2, 16, 6, 2, 2, 4, 2, 16, 4421, 42719, 33, 4153, 7, 221, 3, 5761, 15, 7472, 16, 621, 2467, 541, 1507, 4938, 6, 4191];
const astralIdentifierCodes = [509, 0, 227, 0, 150, 4, 294, 9, 1368, 2, 2, 1, 6, 3, 41, 2, 5, 0, 166, 1, 574, 3, 9, 9, 7, 9, 32, 4, 318, 1, 80, 3, 71, 10, 50, 3, 123, 2, 54, 14, 32, 10, 3, 1, 11, 3, 46, 10, 8, 0, 46, 9, 7, 2, 37, 13, 2, 9, 6, 1, 45, 0, 13, 2, 49, 13, 9, 3, 2, 11, 83, 11, 7, 0, 3, 0, 158, 11, 6, 9, 7, 3, 56, 1, 2, 6, 3, 1, 3, 2, 10, 0, 11, 1, 3, 6, 4, 4, 68, 8, 2, 0, 3, 0, 2, 3, 2, 4, 2, 0, 15, 1, 83, 17, 10, 9, 5, 0, 82, 19, 13, 9, 214, 6, 3, 8, 28, 1, 83, 16, 16, 9, 82, 12, 9, 9, 7, 19, 58, 14, 5, 9, 243, 14, 166, 9, 71, 5, 2, 1, 3, 3, 2, 0, 2, 1, 13, 9, 120, 6, 3, 6, 4, 0, 29, 9, 41, 6, 2, 3, 9, 0, 10, 10, 47, 15, 343, 9, 54, 7, 2, 7, 17, 9, 57, 21, 2, 13, 123, 5, 4, 0, 2, 1, 2, 6, 2, 0, 9, 9, 49, 4, 2, 1, 2, 4, 9, 9, 330, 3, 10, 1, 2, 0, 49, 6, 4, 4, 14, 10, 5350, 0, 7, 14, 11465, 27, 2343, 9, 87, 9, 39, 4, 60, 6, 26, 9, 535, 9, 470, 0, 2, 54, 8, 3, 82, 0, 12, 1, 19628, 1, 4178, 9, 519, 45, 3, 22, 543, 4, 4, 5, 9, 7, 3, 6, 31, 3, 149, 2, 1418, 49, 513, 54, 5, 49, 9, 0, 15, 0, 23, 4, 2, 14, 1361, 6, 2, 16, 3, 6, 2, 1, 2, 4, 101, 0, 161, 6, 10, 9, 357, 0, 62, 13, 499, 13, 245, 1, 2, 9, 726, 6, 110, 6, 6, 9, 4759, 9, 787719, 239];
function isInAstralSet(code, set) {
let pos = 0x10000;
for (let i = 0, length = set.length; i < length; i += 2) {
pos += set[i];
if (pos > code) return false;
pos += set[i + 1];
if (pos >= code) return true;
}
return false;
}
function isIdentifierStart(code) {
if (code < 65) return code === 36;
if (code <= 90) return true;
if (code < 97) return code === 95;
if (code <= 122) return true;
if (code <= 0xffff) {
return code >= 0xaa && nonASCIIidentifierStart.test(String.fromCharCode(code));
}
return isInAstralSet(code, astralIdentifierStartCodes);
}
function isIdentifierChar(code) {
if (code < 48) return code === 36;
if (code < 58) return true;
if (code < 65) return false;
if (code <= 90) return true;
if (code < 97) return code === 95;
if (code <= 122) return true;
if (code <= 0xffff) {
return code >= 0xaa && nonASCIIidentifier.test(String.fromCharCode(code));
}
return isInAstralSet(code, astralIdentifierStartCodes) || isInAstralSet(code, astralIdentifierCodes);
}
const reservedWords = {
keyword: ["break", "case", "catch", "continue", "debugger", "default", "do", "else", "finally", "for", "function", "if", "return", "switch", "throw", "try", "var", "const", "while", "with", "new", "this", "super", "class", "extends", "export", "import", "null", "true", "false", "in", "instanceof", "typeof", "void", "delete"],
strict: ["implements", "interface", "let", "package", "private", "protected", "public", "static", "yield"],
strictBind: ["eval", "arguments"]
};
const keywords = new Set(reservedWords.keyword);
const reservedWordsStrictSet = new Set(reservedWords.strict);
const reservedWordsStrictBindSet = new Set(reservedWords.strictBind);
function isReservedWord(word, inModule) {
return inModule && word === "await" || word === "enum";
}
function isStrictReservedWord(word, inModule) {
return isReservedWord(word, inModule) || reservedWordsStrictSet.has(word);
}
function isStrictBindOnlyReservedWord(word) {
return reservedWordsStrictBindSet.has(word);
}
function isStrictBindReservedWord(word, inModule) {
return isStrictReservedWord(word, inModule) || isStrictBindOnlyReservedWord(word);
}
function isKeyword(word) {
return keywords.has(word);
}
function isIteratorStart(current, next, next2) {
return current === 64 && next === 64 && isIdentifierStart(next2);
}
const reservedWordLikeSet = new Set(["break", "case", "catch", "continue", "debugger", "default", "do", "else", "finally", "for", "function", "if", "return", "switch", "throw", "try", "var", "const", "while", "with", "new", "this", "super", "class", "extends", "export", "import", "null", "true", "false", "in", "instanceof", "typeof", "void", "delete", "implements", "interface", "let", "package", "private", "protected", "public", "static", "yield", "eval", "arguments", "enum", "await"]);
function canBeReservedWord(word) {
return reservedWordLikeSet.has(word);
}
class Scope {
constructor(flags) {
this.flags = 0;
this.names = new Map();
this.firstLexicalName = "";
this.flags = flags;
}
}
class ScopeHandler {
constructor(parser, inModule) {
this.parser = void 0;
this.scopeStack = [];
this.inModule = void 0;
this.undefinedExports = new Map();
this.parser = parser;
this.inModule = inModule;
}
get inTopLevel() {
return (this.currentScope().flags & 1) > 0;
}
get inFunction() {
return (this.currentVarScopeFlags() & 2) > 0;
}
get allowSuper() {
return (this.currentThisScopeFlags() & 16) > 0;
}
get allowDirectSuper() {
return (this.currentThisScopeFlags() & 32) > 0;
}
get inClass() {
return (this.currentThisScopeFlags() & 64) > 0;
}
get inClassAndNotInNonArrowFunction() {
const flags = this.currentThisScopeFlags();
return (flags & 64) > 0 && (flags & 2) === 0;
}
get inStaticBlock() {
for (let i = this.scopeStack.length - 1;; i--) {
const {
flags
} = this.scopeStack[i];
if (flags & 128) {
return true;
}
if (flags & (387 | 64)) {
return false;
}
}
}
get inNonArrowFunction() {
return (this.currentThisScopeFlags() & 2) > 0;
}
get treatFunctionsAsVar() {
return this.treatFunctionsAsVarInScope(this.currentScope());
}
createScope(flags) {
return new Scope(flags);
}
enter(flags) {
this.scopeStack.push(this.createScope(flags));
}
exit() {
const scope = this.scopeStack.pop();
return scope.flags;
}
treatFunctionsAsVarInScope(scope) {
return !!(scope.flags & (2 | 128) || !this.parser.inModule && scope.flags & 1);
}
declareName(name, bindingType, loc) {
let scope = this.currentScope();
if (bindingType & 8 || bindingType & 16) {
this.checkRedeclarationInScope(scope, name, bindingType, loc);
let type = scope.names.get(name) || 0;
if (bindingType & 16) {
type = type | 4;
} else {
if (!scope.firstLexicalName) {
scope.firstLexicalName = name;
}
type = type | 2;
}
scope.names.set(name, type);
if (bindingType & 8) {
this.maybeExportDefined(scope, name);
}
} else if (bindingType & 4) {
for (let i = this.scopeStack.length - 1; i >= 0; --i) {
scope = this.scopeStack[i];
this.checkRedeclarationInScope(scope, name, bindingType, loc);
scope.names.set(name, (scope.names.get(name) || 0) | 1);
this.maybeExportDefined(scope, name);
if (scope.flags & 387) break;
}
}
if (this.parser.inModule && scope.flags & 1) {
this.undefinedExports.delete(name);
}
}
maybeExportDefined(scope, name) {
if (this.parser.inModule && scope.flags & 1) {
this.undefinedExports.delete(name);
}
}
checkRedeclarationInScope(scope, name, bindingType, loc) {
if (this.isRedeclaredInScope(scope, name, bindingType)) {
this.parser.raise(Errors.VarRedeclaration, loc, {
identifierName: name
});
}
}
isRedeclaredInScope(scope, name, bindingType) {
if (!(bindingType & 1)) return false;
if (bindingType & 8) {
return scope.names.has(name);
}
const type = scope.names.get(name);
if (bindingType & 16) {
return (type & 2) > 0 || !this.treatFunctionsAsVarInScope(scope) && (type & 1) > 0;
}
return (type & 2) > 0 && !(scope.flags & 8 && scope.firstLexicalName === name) || !this.treatFunctionsAsVarInScope(scope) && (type & 4) > 0;
}
checkLocalExport(id) {
const {
name
} = id;
const topLevelScope = this.scopeStack[0];
if (!topLevelScope.names.has(name)) {
this.undefinedExports.set(name, id.loc.start);
}
}
currentScope() {
return this.scopeStack[this.scopeStack.length - 1];
}
currentVarScopeFlags() {
for (let i = this.scopeStack.length - 1;; i--) {
const {
flags
} = this.scopeStack[i];
if (flags & 387) {
return flags;
}
}
}
currentThisScopeFlags() {
for (let i = this.scopeStack.length - 1;; i--) {
const {
flags
} = this.scopeStack[i];
if (flags & (387 | 64) && !(flags & 4)) {
return flags;
}
}
}
}
class FlowScope extends Scope {
constructor(...args) {
super(...args);
this.declareFunctions = new Set();
}
}
class FlowScopeHandler extends ScopeHandler {
createScope(flags) {
return new FlowScope(flags);
}
declareName(name, bindingType, loc) {
const scope = this.currentScope();
if (bindingType & 2048) {
this.checkRedeclarationInScope(scope, name, bindingType, loc);
this.maybeExportDefined(scope, name);
scope.declareFunctions.add(name);
return;
}
super.declareName(name, bindingType, loc);
}
isRedeclaredInScope(scope, name, bindingType) {
if (super.isRedeclaredInScope(scope, name, bindingType)) return true;
if (bindingType & 2048 && !scope.declareFunctions.has(name)) {
const type = scope.names.get(name);
return (type & 4) > 0 || (type & 2) > 0;
}
return false;
}
checkLocalExport(id) {
if (!this.scopeStack[0].declareFunctions.has(id.name)) {
super.checkLocalExport(id);
}
}
}
class BaseParser {
constructor() {
this.sawUnambiguousESM = false;
this.ambiguousScriptDifferentAst = false;
}
sourceToOffsetPos(sourcePos) {
return sourcePos + this.startIndex;
}
offsetToSourcePos(offsetPos) {
return offsetPos - this.startIndex;
}
hasPlugin(pluginConfig) {
if (typeof pluginConfig === "string") {
return this.plugins.has(pluginConfig);
} else {
const [pluginName, pluginOptions] = pluginConfig;
if (!this.hasPlugin(pluginName)) {
return false;
}
const actualOptions = this.plugins.get(pluginName);
for (const key of Object.keys(pluginOptions)) {
if ((actualOptions == null ? void 0 : actualOptions[key]) !== pluginOptions[key]) {
return false;
}
}
return true;
}
}
getPluginOption(plugin, name) {
var _this$plugins$get;
return (_this$plugins$get = this.plugins.get(plugin)) == null ? void 0 : _this$plugins$get[name];
}
}
function setTrailingComments(node, comments) {
if (node.trailingComments === undefined) {
node.trailingComments = comments;
} else {
node.trailingComments.unshift(...comments);
}
}
function setLeadingComments(node, comments) {
if (node.leadingComments === undefined) {
node.leadingComments = comments;
} else {
node.leadingComments.unshift(...comments);
}
}
function setInnerComments(node, comments) {
if (node.innerComments === undefined) {
node.innerComments = comments;
} else {
node.innerComments.unshift(...comments);
}
}
function adjustInnerComments(node, elements, commentWS) {
let lastElement = null;
let i = elements.length;
while (lastElement === null && i > 0) {
lastElement = elements[--i];
}
if (lastElement === null || lastElement.start > commentWS.start) {
setInnerComments(node, commentWS.comments);
} else {
setTrailingComments(lastElement, commentWS.comments);
}
}
class CommentsParser extends BaseParser {
addComment(comment) {
if (this.filename) comment.loc.filename = this.filename;
const {
commentsLen
} = this.state;
if (this.comments.length !== commentsLen) {
this.comments.length = commentsLen;
}
this.comments.push(comment);
this.state.commentsLen++;
}
processComment(node) {
const {
commentStack
} = this.state;
const commentStackLength = commentStack.length;
if (commentStackLength === 0) return;
let i = commentStackLength - 1;
const lastCommentWS = commentStack[i];
if (lastCommentWS.start === node.end) {
lastCommentWS.leadingNode = node;
i--;
}
const {
start: nodeStart
} = node;
for (; i >= 0; i--) {
const commentWS = commentStack[i];
const commentEnd = commentWS.end;
if (commentEnd > nodeStart) {
commentWS.containingNode = node;
this.finalizeComment(commentWS);
commentStack.splice(i, 1);
} else {
if (commentEnd === nodeStart) {
commentWS.trailingNode = node;
}
break;
}
}
}
finalizeComment(commentWS) {
const {
comments
} = commentWS;
if (commentWS.leadingNode !== null || commentWS.trailingNode !== null) {
if (commentWS.leadingNode !== null) {
setTrailingComments(commentWS.leadingNode, comments);
}
if (commentWS.trailingNode !== null) {
setLeadingComments(commentWS.trailingNode, comments);
}
} else {
const {
containingNode: node,
start: commentStart
} = commentWS;
if (this.input.charCodeAt(this.offsetToSourcePos(commentStart) - 1) === 44) {
switch (node.type) {
case "ObjectExpression":
case "ObjectPattern":
case "RecordExpression":
adjustInnerComments(node, node.properties, commentWS);
break;
case "CallExpression":
case "OptionalCallExpression":
adjustInnerComments(node, node.arguments, commentWS);
break;
case "FunctionDeclaration":
case "FunctionExpression":
case "ArrowFunctionExpression":
case "ObjectMethod":
case "ClassMethod":
case "ClassPrivateMethod":
adjustInnerComments(node, node.params, commentWS);
break;
case "ArrayExpression":
case "ArrayPattern":
case "TupleExpression":
adjustInnerComments(node, node.elements, commentWS);
break;
case "ExportNamedDeclaration":
case "ImportDeclaration":
adjustInnerComments(node, node.specifiers, commentWS);
break;
case "TSEnumDeclaration":
{
adjustInnerComments(node, node.members, commentWS);
}
break;
case "TSEnumBody":
adjustInnerComments(node, node.members, commentWS);
break;
default:
{
setInnerComments(node, comments);
}
}
} else {
setInnerComments(node, comments);
}
}
}
finalizeRemainingComments() {
const {
commentStack
} = this.state;
for (let i = commentStack.length - 1; i >= 0; i--) {
this.finalizeComment(commentStack[i]);
}
this.state.commentStack = [];
}
resetPreviousNodeTrailingComments(node) {
const {
commentStack
} = this.state;
const {
length
} = commentStack;
if (length === 0) return;
const commentWS = commentStack[length - 1];
if (commentWS.leadingNode === node) {
commentWS.leadingNode = null;
}
}
resetPreviousIdentifierLeadingComments(node) {
const {
commentStack
} = this.state;
const {
length
} = commentStack;
if (length === 0) return;
if (commentStack[length - 1].trailingNode === node) {
commentStack[length - 1].trailingNode = null;
} else if (length >= 2 && commentStack[length - 2].trailingNode === node) {
commentStack[length - 2].trailingNode = null;
}
}
takeSurroundingComments(node, start, end) {
const {
commentStack
} = this.state;
const commentStackLength = commentStack.length;
if (commentStackLength === 0) return;
let i = commentStackLength - 1;
for (; i >= 0; i--) {
const commentWS = commentStack[i];
const commentEnd = commentWS.end;
const commentStart = commentWS.start;
if (commentStart === end) {
commentWS.leadingNode = node;
} else if (commentEnd === start) {
commentWS.trailingNode = node;
} else if (commentEnd < start) {
break;
}
}
}
}
const lineBreak = /\r\n|[\r\n\u2028\u2029]/;
const lineBreakG = new RegExp(lineBreak.source, "g");
function isNewLine(code) {
switch (code) {
case 10:
case 13:
case 8232:
case 8233:
return true;
default:
return false;
}
}
function hasNewLine(input, start, end) {
for (let i = start; i < end; i++) {
if (isNewLine(input.charCodeAt(i))) {
return true;
}
}
return false;
}
const skipWhiteSpace = /(?:\s|\/\/.*|\/\*[^]*?\*\/)*/g;
const skipWhiteSpaceInLine = /(?:[^\S\n\r\u2028\u2029]|\/\/.*|\/\*.*?\*\/)*/g;
function isWhitespace(code) {
switch (code) {
case 0x0009:
case 0x000b:
case 0x000c:
case 32:
case 160:
case 5760:
case 0x2000:
case 0x2001:
case 0x2002:
case 0x2003:
case 0x2004:
case 0x2005:
case 0x2006:
case 0x2007:
case 0x2008:
case 0x2009:
case 0x200a:
case 0x202f:
case 0x205f:
case 0x3000:
case 0xfeff:
return true;
default:
return false;
}
}
class State {
constructor() {
this.flags = 1024;
this.startIndex = void 0;
this.curLine = void 0;
this.lineStart = void 0;
this.startLoc = void 0;
this.endLoc = void 0;
this.errors = [];
this.potentialArrowAt = -1;
this.noArrowAt = [];
this.noArrowParamsConversionAt = [];
this.topicContext = {
maxNumOfResolvableTopics: 0,
maxTopicIndex: null
};
this.labels = [];
this.commentsLen = 0;
this.commentStack = [];
this.pos = 0;
this.type = 140;
this.value = null;
this.start = 0;
this.end = 0;
this.lastTokEndLoc = null;
this.lastTokStartLoc = null;
this.context = [types.brace];
this.firstInvalidTemplateEscapePos = null;
this.strictErrors = new Map();
this.tokensLength = 0;
}
get strict() {
return (this.flags & 1) > 0;
}
set strict(v) {
if (v) this.flags |= 1;else this.flags &= -2;
}
init({
strictMode,
sourceType,
startIndex,
startLine,
startColumn
}) {
this.strict = strictMode === false ? false : strictMode === true ? true : sourceType === "module";
this.startIndex = startIndex;
this.curLine = startLine;
this.lineStart = -startColumn;
this.startLoc = this.endLoc = new Position(startLine, startColumn, startIndex);
}
get maybeInArrowParameters() {
return (this.flags & 2) > 0;
}
set maybeInArrowParameters(v) {
if (v) this.flags |= 2;else this.flags &= -3;
}
get inType() {
return (this.flags & 4) > 0;
}
set inType(v) {
if (v) this.flags |= 4;else this.flags &= -5;
}
get noAnonFunctionType() {
return (this.flags & 8) > 0;
}
set noAnonFunctionType(v) {
if (v) this.flags |= 8;else this.flags &= -9;
}
get hasFlowComment() {
return (this.flags & 16) > 0;
}
set hasFlowComment(v) {
if (v) this.flags |= 16;else this.flags &= -17;
}
get isAmbientContext() {
return (this.flags & 32) > 0;
}
set isAmbientContext(v) {
if (v) this.flags |= 32;else this.flags &= -33;
}
get inAbstractClass() {
return (this.flags & 64) > 0;
}
set inAbstractClass(v) {
if (v) this.flags |= 64;else this.flags &= -65;
}
get inDisallowConditionalTypesContext() {
return (this.flags & 128) > 0;
}
set inDisallowConditionalTypesContext(v) {
if (v) this.flags |= 128;else this.flags &= -129;
}
get soloAwait() {
return (this.flags & 256) > 0;
}
set soloAwait(v) {
if (v) this.flags |= 256;else this.flags &= -257;
}
get inFSharpPipelineDirectBody() {
return (this.flags & 512) > 0;
}
set inFSharpPipelineDirectBody(v) {
if (v) this.flags |= 512;else this.flags &= -513;
}
get canStartJSXElement() {
return (this.flags & 1024) > 0;
}
set canStartJSXElement(v) {
if (v) this.flags |= 1024;else this.flags &= -1025;
}
get containsEsc() {
return (this.flags & 2048) > 0;
}
set containsEsc(v) {
if (v) this.flags |= 2048;else this.flags &= -2049;
}
get hasTopLevelAwait() {
return (this.flags & 4096) > 0;
}
set hasTopLevelAwait(v) {
if (v) this.flags |= 4096;else this.flags &= -4097;
}
curPosition() {
return new Position(this.curLine, this.pos - this.lineStart, this.pos + this.startIndex);
}
clone() {
const state = new State();
state.flags = this.flags;
state.startIndex = this.startIndex;
state.curLine = this.curLine;
state.lineStart = this.lineStart;
state.startLoc = this.startLoc;
state.endLoc = this.endLoc;
state.errors = this.errors.slice();
state.potentialArrowAt = this.potentialArrowAt;
state.noArrowAt = this.noArrowAt.slice();
state.noArrowParamsConversionAt = this.noArrowParamsConversionAt.slice();
state.topicContext = this.topicContext;
state.labels = this.labels.slice();
state.commentsLen = this.commentsLen;
state.commentStack = this.commentStack.slice();
state.pos = this.pos;
state.type = this.type;
state.value = this.value;
state.start = this.start;
state.end = this.end;
state.lastTokEndLoc = this.lastTokEndLoc;
state.lastTokStartLoc = this.lastTokStartLoc;
state.context = this.context.slice();
state.firstInvalidTemplateEscapePos = this.firstInvalidTemplateEscapePos;
state.strictErrors = this.strictErrors;
state.tokensLength = this.tokensLength;
return state;
}
}
var _isDigit = function isDigit(code) {
return code >= 48 && code <= 57;
};
const forbiddenNumericSeparatorSiblings = {
decBinOct: new Set([46, 66, 69, 79, 95, 98, 101, 111]),
hex: new Set([46, 88, 95, 120])
};
const isAllowedNumericSeparatorSibling = {
bin: ch => ch === 48 || ch === 49,
oct: ch => ch >= 48 && ch <= 55,
dec: ch => ch >= 48 && ch <= 57,
hex: ch => ch >= 48 && ch <= 57 || ch >= 65 && ch <= 70 || ch >= 97 && ch <= 102
};
function readStringContents(type, input, pos, lineStart, curLine, errors) {
const initialPos = pos;
const initialLineStart = lineStart;
const initialCurLine = curLine;
let out = "";
let firstInvalidLoc = null;
let chunkStart = pos;
const {
length
} = input;
for (;;) {
if (pos >= length) {
errors.unterminated(initialPos, initialLineStart, initialCurLine);
out += input.slice(chunkStart, pos);
break;
}
const ch = input.charCodeAt(pos);
if (isStringEnd(type, ch, input, pos)) {
out += input.slice(chunkStart, pos);
break;
}
if (ch === 92) {
out += input.slice(chunkStart, pos);
const res = readEscapedChar(input, pos, lineStart, curLine, type === "template", errors);
if (res.ch === null && !firstInvalidLoc) {
firstInvalidLoc = {
pos,
lineStart,
curLine
};
} else {
out += res.ch;
}
({
pos,
lineStart,
curLine
} = res);
chunkStart = pos;
} else if (ch === 8232 || ch === 8233) {
++pos;
++curLine;
lineStart = pos;
} else if (ch === 10 || ch === 13) {
if (type === "template") {
out += input.slice(chunkStart, pos) + "\n";
++pos;
if (ch === 13 && input.charCodeAt(pos) === 10) {
++pos;
}
++curLine;
chunkStart = lineStart = pos;
} else {
errors.unterminated(initialPos, initialLineStart, initialCurLine);
}
} else {
++pos;
}
}
return {
pos,
str: out,
firstInvalidLoc,
lineStart,
curLine,
containsInvalid: !!firstInvalidLoc
};
}
function isStringEnd(type, ch, input, pos) {
if (type === "template") {
return ch === 96 || ch === 36 && input.charCodeAt(pos + 1) === 123;
}
return ch === (type === "double" ? 34 : 39);
}
function readEscapedChar(input, pos, lineStart, curLine, inTemplate, errors) {
const throwOnInvalid = !inTemplate;
pos++;
const res = ch => ({
pos,
ch,
lineStart,
curLine
});
const ch = input.charCodeAt(pos++);
switch (ch) {
case 110:
return res("\n");
case 114:
return res("\r");
case 120:
{
let code;
({
code,
pos
} = readHexChar(input, pos, lineStart, curLine, 2, false, throwOnInvalid, errors));
return res(code === null ? null : String.fromCharCode(code));
}
case 117:
{
let code;
({
code,
pos
} = readCodePoint(input, pos, lineStart, curLine, throwOnInvalid, errors));
return res(code === null ? null : String.fromCodePoint(code));
}
case 116:
return res("\t");
case 98:
return res("\b");
case 118:
return res("\u000b");
case 102:
return res("\f");
case 13:
if (input.charCodeAt(pos) === 10) {
++pos;
}
case 10:
lineStart = pos;
++curLine;
case 8232:
case 8233:
return res("");
case 56:
case 57:
if (inTemplate) {
return res(null);
} else {
errors.strictNumericEscape(pos - 1, lineStart, curLine);
}
default:
if (ch >= 48 && ch <= 55) {
const startPos = pos - 1;
const match = /^[0-7]+/.exec(input.slice(startPos, pos + 2));
let octalStr = match[0];
let octal = parseInt(octalStr, 8);
if (octal > 255) {
octalStr = octalStr.slice(0, -1);
octal = parseInt(octalStr, 8);
}
pos += octalStr.length - 1;
const next = input.charCodeAt(pos);
if (octalStr !== "0" || next === 56 || next === 57) {
if (inTemplate) {
return res(null);
} else {
errors.strictNumericEscape(startPos, lineStart, curLine);
}
}
return res(String.fromCharCode(octal));
}
return res(String.fromCharCode(ch));
}
}
function readHexChar(input, pos, lineStart, curLine, len, forceLen, throwOnInvalid, errors) {
const initialPos = pos;
let n;
({
n,
pos
} = readInt(input, pos, lineStart, curLine, 16, len, forceLen, false, errors, !throwOnInvalid));
if (n === null) {
if (throwOnInvalid) {
errors.invalidEscapeSequence(initialPos, lineStart, curLine);
} else {
pos = initialPos - 1;
}
}
return {
code: n,
pos
};
}
function readInt(input, pos, lineStart, curLine, radix, len, forceLen, allowNumSeparator, errors, bailOnError) {
const start = pos;
const forbiddenSiblings = radix === 16 ? forbiddenNumericSeparatorSiblings.hex : forbiddenNumericSeparatorSiblings.decBinOct;
const isAllowedSibling = radix === 16 ? isAllowedNumericSeparatorSibling.hex : radix === 10 ? isAllowedNumericSeparatorSibling.dec : radix === 8 ? isAllowedNumericSeparatorSibling.oct : isAllowedNumericSeparatorSibling.bin;
let invalid = false;
let total = 0;
for (let i = 0, e = len == null ? Infinity : len; i < e; ++i) {
const code = input.charCodeAt(pos);
let val;
if (code === 95 && allowNumSeparator !== "bail") {
const prev = input.charCodeAt(pos - 1);
const next = input.charCodeAt(pos + 1);
if (!allowNumSeparator) {
if (bailOnError) return {
n: null,
pos
};
errors.numericSeparatorInEscapeSequence(pos, lineStart, curLine);
} else if (Number.isNaN(next) || !isAllowedSibling(next) || forbiddenSiblings.has(prev) || forbiddenSiblings.has(next)) {
if (bailOnError) return {
n: null,
pos
};
errors.unexpectedNumericSeparator(pos, lineStart, curLine);
}
++pos;
continue;
}
if (code >= 97) {
val = code - 97 + 10;
} else if (code >= 65) {
val = code - 65 + 10;
} else if (_isDigit(code)) {
val = code - 48;
} else {
val = Infinity;
}
if (val >= radix) {
if (val <= 9 && bailOnError) {
return {
n: null,
pos
};
} else if (val <= 9 && errors.invalidDigit(pos, lineStart, curLine, radix)) {
val = 0;
} else if (forceLen) {
val = 0;
invalid = true;
} else {
break;
}
}
++pos;
total = total * radix + val;
}
if (pos === start || len != null && pos - start !== len || invalid) {
return {
n: null,
pos
};
}
return {
n: total,
pos
};
}
function readCodePoint(input, pos, lineStart, curLine, throwOnInvalid, errors) {
const ch = input.charCodeAt(pos);
let code;
if (ch === 123) {
++pos;
({
code,
pos
} = readHexChar(input, pos, lineStart, curLine, input.indexOf("}", pos) - pos, true, throwOnInvalid, errors));
++pos;
if (code !== null && code > 0x10ffff) {
if (throwOnInvalid) {
errors.invalidCodePoint(pos, lineStart, curLine);
} else {
return {
code: null,
pos
};
}
}
} else {
({
code,
pos
} = readHexChar(input, pos, lineStart, curLine, 4, false, throwOnInvalid, errors));
}
return {
code,
pos
};
}
function buildPosition(pos, lineStart, curLine) {
return new Position(curLine, pos - lineStart, pos);
}
const VALID_REGEX_FLAGS = new Set([103, 109, 115, 105, 121, 117, 100, 118]);
class Token {
constructor(state) {
const startIndex = state.startIndex || 0;
this.type = state.type;
this.value = state.value;
this.start = startIndex + state.start;
this.end = startIndex + state.end;
this.loc = new SourceLocation(state.startLoc, state.endLoc);
}
}
class Tokenizer extends CommentsParser {
constructor(options, input) {
super();
this.isLookahead = void 0;
this.tokens = [];
this.errorHandlers_readInt = {
invalidDigit: (pos, lineStart, curLine, radix) => {
if (!(this.optionFlags & 2048)) return false;
this.raise(Errors.InvalidDigit, buildPosition(pos, lineStart, curLine), {
radix
});
return true;
},
numericSeparatorInEscapeSequence: this.errorBuilder(Errors.NumericSeparatorInEscapeSequence),
unexpectedNumericSeparator: this.errorBuilder(Errors.UnexpectedNumericSeparator)
};
this.errorHandlers_readCodePoint = Object.assign({}, this.errorHandlers_readInt, {
invalidEscapeSequence: this.errorBuilder(Errors.InvalidEscapeSequence),
invalidCodePoint: this.errorBuilder(Errors.InvalidCodePoint)
});
this.errorHandlers_readStringContents_string = Object.assign({}, this.errorHandlers_readCodePoint, {
strictNumericEscape: (pos, lineStart, curLine) => {
this.recordStrictModeErrors(Errors.StrictNumericEscape, buildPosition(pos, lineStart, curLine));
},
unterminated: (pos, lineStart, curLine) => {
throw this.raise(Errors.UnterminatedString, buildPosition(pos - 1, lineStart, curLine));
}
});
this.errorHandlers_readStringContents_template = Object.assign({}, this.errorHandlers_readCodePoint, {
strictNumericEscape: this.errorBuilder(Errors.StrictNumericEscape),
unterminated: (pos, lineStart, curLine) => {
throw this.raise(Errors.UnterminatedTemplate, buildPosition(pos, lineStart, curLine));
}
});
this.state = new State();
this.state.init(options);
this.input = input;
this.length = input.length;
this.comments = [];
this.isLookahead = false;
}
pushToken(token) {
this.tokens.length = this.state.tokensLength;
this.tokens.push(token);
++this.state.tokensLength;
}
next() {
this.checkKeywordEscapes();
if (this.optionFlags & 256) {
this.pushToken(new Token(this.state));
}
this.state.lastTokEndLoc = this.state.endLoc;
this.state.lastTokStartLoc = this.state.startLoc;
this.nextToken();
}
eat(type) {
if (this.match(type)) {
this.next();
return true;
} else {
return false;
}
}
match(type) {
return this.state.type === type;
}
createLookaheadState(state) {
return {
pos: state.pos,
value: null,
type: state.type,
start: state.start,
end: state.end,
context: [this.curContext()],
inType: state.inType,
startLoc: state.startLoc,
lastTokEndLoc: state.lastTokEndLoc,
curLine: state.curLine,
lineStart: state.lineStart,
curPosition: state.curPosition
};
}
lookahead() {
const old = this.state;
this.state = this.createLookaheadState(old);
this.isLookahead = true;
this.nextToken();
this.isLookahead = false;
const curr = this.state;
this.state = old;
return curr;
}
nextTokenStart() {
return this.nextTokenStartSince(this.state.pos);
}
nextTokenStartSince(pos) {
skipWhiteSpace.lastIndex = pos;
return skipWhiteSpace.test(this.input) ? skipWhiteSpace.lastIndex : pos;
}
lookaheadCharCode() {
return this.input.charCodeAt(this.nextTokenStart());
}
nextTokenInLineStart() {
return this.nextTokenInLineStartSince(this.state.pos);
}
nextTokenInLineStartSince(pos) {
skipWhiteSpaceInLine.lastIndex = pos;
return skipWhiteSpaceInLine.test(this.input) ? skipWhiteSpaceInLine.lastIndex : pos;
}
lookaheadInLineCharCode() {
return this.input.charCodeAt(this.nextTokenInLineStart());
}
codePointAtPos(pos) {
let cp = this.input.charCodeAt(pos);
if ((cp & 0xfc00) === 0xd800 && ++pos < this.input.length) {
const trail = this.input.charCodeAt(pos);
if ((trail & 0xfc00) === 0xdc00) {
cp = 0x10000 + ((cp & 0x3ff) << 10) + (trail & 0x3ff);
}
}
return cp;
}
setStrict(strict) {
this.state.strict = strict;
if (strict) {
this.state.strictErrors.forEach(([toParseError, at]) => this.raise(toParseError, at));
this.state.strictErrors.clear();
}
}
curContext() {
return this.state.context[this.state.context.length - 1];
}
nextToken() {
this.skipSpace();
this.state.start = this.state.pos;
if (!this.isLookahead) this.state.startLoc = this.state.curPosition();
if (this.state.pos >= this.length) {
this.finishToken(140);
return;
}
this.getTokenFromCode(this.codePointAtPos(this.state.pos));
}
skipBlockComment(commentEnd) {
let startLoc;
if (!this.isLookahead) startLoc = this.state.curPosition();
const start = this.state.pos;
const end = this.input.indexOf(commentEnd, start + 2);
if (end === -1) {
throw this.raise(Errors.UnterminatedComment, this.state.curPosition());
}
this.state.pos = end + commentEnd.length;
lineBreakG.lastIndex = start + 2;
while (lineBreakG.test(this.input) && lineBreakG.lastIndex <= end) {
++this.state.curLine;
this.state.lineStart = lineBreakG.lastIndex;
}
if (this.isLookahead) return;
const comment = {
type: "CommentBlock",
value: this.input.slice(start + 2, end),
start: this.sourceToOffsetPos(start),
end: this.sourceToOffsetPos(end + commentEnd.length),
loc: new SourceLocation(startLoc, this.state.curPosition())
};
if (this.optionFlags & 256) this.pushToken(comment);
return comment;
}
skipLineComment(startSkip) {
const start = this.state.pos;
let startLoc;
if (!this.isLookahead) startLoc = this.state.curPosition();
let ch = this.input.charCodeAt(this.state.pos += startSkip);
if (this.state.pos < this.length) {
while (!isNewLine(ch) && ++this.state.pos < this.length) {
ch = this.input.charCodeAt(this.state.pos);
}
}
if (this.isLookahead) return;
const end = this.state.pos;
const value = this.input.slice(start + startSkip, end);
const comment = {
type: "CommentLine",
value,
start: this.sourceToOffsetPos(start),
end: this.sourceToOffsetPos(end),
loc: new SourceLocation(startLoc, this.state.curPosition())
};
if (this.optionFlags & 256) this.pushToken(comment);
return comment;
}
skipSpace() {
const spaceStart = this.state.pos;
const comments = this.optionFlags & 4096 ? [] : null;
loop: while (this.state.pos < this.length) {
const ch = this.input.charCodeAt(this.state.pos);
switch (ch) {
case 32:
case 160:
case 9:
++this.state.pos;
break;
case 13:
if (this.input.charCodeAt(this.state.pos + 1) === 10) {
++this.state.pos;
}
case 10:
case 8232:
case 8233:
++this.state.pos;
++this.state.curLine;
this.state.lineStart = this.state.pos;
break;
case 47:
switch (this.input.charCodeAt(this.state.pos + 1)) {
case 42:
{
const comment = this.skipBlockComment("*/");
if (comment !== undefined) {
this.addComment(comment);
comments == null || comments.push(comment);
}
break;
}
case 47:
{
const comment = this.skipLineComment(2);
if (comment !== undefined) {
this.addComment(comment);
comments == null || comments.push(comment);
}
break;
}
default:
break loop;
}
break;
default:
if (isWhitespace(ch)) {
++this.state.pos;
} else if (ch === 45 && !this.inModule && this.optionFlags & 8192) {
const pos = this.state.pos;
if (this.input.charCodeAt(pos + 1) === 45 && this.input.charCodeAt(pos + 2) === 62 && (spaceStart === 0 || this.state.lineStart > spaceStart)) {
const comment = this.skipLineComment(3);
if (comment !== undefined) {
this.addComment(comment);
comments == null || comments.push(comment);
}
} else {
break loop;
}
} else if (ch === 60 && !this.inModule && this.optionFlags & 8192) {
const pos = this.state.pos;
if (this.input.charCodeAt(pos + 1) === 33 && this.input.charCodeAt(pos + 2) === 45 && this.input.charCodeAt(pos + 3) === 45) {
const comment = this.skipLineComment(4);
if (comment !== undefined) {
this.addComment(comment);
comments == null || comments.push(comment);
}
} else {
break loop;
}
} else {
break loop;
}
}
}
if ((comments == null ? void 0 : comments.length) > 0) {
const end = this.state.pos;
const commentWhitespace = {
start: this.sourceToOffsetPos(spaceStart),
end: this.sourceToOffsetPos(end),
comments,
leadingNode: null,
trailingNode: null,
containingNode: null
};
this.state.commentStack.push(commentWhitespace);
}
}
finishToken(type, val) {
this.state.end = this.state.pos;
this.state.endLoc = this.state.curPosition();
const prevType = this.state.type;
this.state.type = type;
this.state.value = val;
if (!this.isLookahead) {
this.updateContext(prevType);
}
}
replaceToken(type) {
this.state.type = type;
this.updateContext();
}
readToken_numberSign() {
if (this.state.pos === 0 && this.readToken_interpreter()) {
return;
}
const nextPos = this.state.pos + 1;
const next = this.codePointAtPos(nextPos);
if (next >= 48 && next <= 57) {
throw this.raise(Errors.UnexpectedDigitAfterHash, this.state.curPosition());
}
if (next === 123 || next === 91 && this.hasPlugin("recordAndTuple")) {
this.expectPlugin("recordAndTuple");
if (this.getPluginOption("recordAndTuple", "syntaxType") === "bar") {
throw this.raise(next === 123 ? Errors.RecordExpressionHashIncorrectStartSyntaxType : Errors.TupleExpressionHashIncorrectStartSyntaxType, this.state.curPosition());
}
this.state.pos += 2;
if (next === 123) {
this.finishToken(7);
} else {
this.finishToken(1);
}
} else if (isIdentifierStart(next)) {
++this.state.pos;
this.finishToken(139, this.readWord1(next));
} else if (next === 92) {
++this.state.pos;
this.finishToken(139, this.readWord1());
} else {
this.finishOp(27, 1);
}
}
readToken_dot() {
const next = this.input.charCodeAt(this.state.pos + 1);
if (next >= 48 && next <= 57) {
this.readNumber(true);
return;
}
if (next === 46 && this.input.charCodeAt(this.state.pos + 2) === 46) {
this.state.pos += 3;
this.finishToken(21);
} else {
++this.state.pos;
this.finishToken(16);
}
}
readToken_slash() {
const next = this.input.charCodeAt(this.state.pos + 1);
if (next === 61) {
this.finishOp(31, 2);
} else {
this.finishOp(56, 1);
}
}
readToken_interpreter() {
if (this.state.pos !== 0 || this.length < 2) return false;
let ch = this.input.charCodeAt(this.state.pos + 1);
if (ch !== 33) return false;
const start = this.state.pos;
this.state.pos += 1;
while (!isNewLine(ch) && ++this.state.pos < this.length) {
ch = this.input.charCodeAt(this.state.pos);
}
const value = this.input.slice(start + 2, this.state.pos);
this.finishToken(28, value);
return true;
}
readToken_mult_modulo(code) {
let type = code === 42 ? 55 : 54;
let width = 1;
let next = this.input.charCodeAt(this.state.pos + 1);
if (code === 42 && next === 42) {
width++;
next = this.input.charCodeAt(this.state.pos + 2);
type = 57;
}
if (next === 61 && !this.state.inType) {
width++;
type = code === 37 ? 33 : 30;
}
this.finishOp(type, width);
}
readToken_pipe_amp(code) {
const next = this.input.charCodeAt(this.state.pos + 1);
if (next === code) {
if (this.input.charCodeAt(this.state.pos + 2) === 61) {
this.finishOp(30, 3);
} else {
this.finishOp(code === 124 ? 41 : 42, 2);
}
return;
}
if (code === 124) {
if (next === 62) {
this.finishOp(39, 2);
return;
}
if (this.hasPlugin("recordAndTuple") && next === 125) {
if (this.getPluginOption("recordAndTuple", "syntaxType") !== "bar") {
throw this.raise(Errors.RecordExpressionBarIncorrectEndSyntaxType, this.state.curPosition());
}
this.state.pos += 2;
this.finishToken(9);
return;
}
if (this.hasPlugin("recordAndTuple") && next === 93) {
if (this.getPluginOption("recordAndTuple", "syntaxType") !== "bar") {
throw this.raise(Errors.TupleExpressionBarIncorrectEndSyntaxType, this.state.curPosition());
}
this.state.pos += 2;
this.finishToken(4);
return;
}
}
if (next === 61) {
this.finishOp(30, 2);
return;
}
this.finishOp(code === 124 ? 43 : 45, 1);
}
readToken_caret() {
const next = this.input.charCodeAt(this.state.pos + 1);
if (next === 61 && !this.state.inType) {
this.finishOp(32, 2);
} else if (next === 94 && this.hasPlugin(["pipelineOperator", {
proposal: "hack",
topicToken: "^^"
}])) {
this.finishOp(37, 2);
const lookaheadCh = this.input.codePointAt(this.state.pos);
if (lookaheadCh === 94) {
this.unexpected();
}
} else {
this.finishOp(44, 1);
}
}
readToken_atSign() {
const next = this.input.charCodeAt(this.state.pos + 1);
if (next === 64 && this.hasPlugin(["pipelineOperator", {
proposal: "hack",
topicToken: "@@"
}])) {
this.finishOp(38, 2);
} else {
this.finishOp(26, 1);
}
}
readToken_plus_min(code) {
const next = this.input.charCodeAt(this.state.pos + 1);
if (next === code) {
this.finishOp(34, 2);
return;
}
if (next === 61) {
this.finishOp(30, 2);
} else {
this.finishOp(53, 1);
}
}
readToken_lt() {
const {
pos
} = this.state;
const next = this.input.charCodeAt(pos + 1);
if (next === 60) {
if (this.input.charCodeAt(pos + 2) === 61) {
this.finishOp(30, 3);
return;
}
this.finishOp(51, 2);
return;
}
if (next === 61) {
this.finishOp(49, 2);
return;
}
this.finishOp(47, 1);
}
readToken_gt() {
const {
pos
} = this.state;
const next = this.input.charCodeAt(pos + 1);
if (next === 62) {
const size = this.input.charCodeAt(pos + 2) === 62 ? 3 : 2;
if (this.input.charCodeAt(pos + size) === 61) {
this.finishOp(30, size + 1);
return;
}
this.finishOp(52, size);
return;
}
if (next === 61) {
this.finishOp(49, 2);
return;
}
this.finishOp(48, 1);
}
readToken_eq_excl(code) {
const next = this.input.charCodeAt(this.state.pos + 1);
if (next === 61) {
this.finishOp(46, this.input.charCodeAt(this.state.pos + 2) === 61 ? 3 : 2);
return;
}
if (code === 61 && next === 62) {
this.state.pos += 2;
this.finishToken(19);
return;
}
this.finishOp(code === 61 ? 29 : 35, 1);
}
readToken_question() {
const next = this.input.charCodeAt(this.state.pos + 1);
const next2 = this.input.charCodeAt(this.state.pos + 2);
if (next === 63) {
if (next2 === 61) {
this.finishOp(30, 3);
} else {
this.finishOp(40, 2);
}
} else if (next === 46 && !(next2 >= 48 && next2 <= 57)) {
this.state.pos += 2;
this.finishToken(18);
} else {
++this.state.pos;
this.finishToken(17);
}
}
getTokenFromCode(code) {
switch (code) {
case 46:
this.readToken_dot();
return;
case 40:
++this.state.pos;
this.finishToken(10);
return;
case 41:
++this.state.pos;
this.finishToken(11);
return;
case 59:
++this.state.pos;
this.finishToken(13);
return;
case 44:
++this.state.pos;
this.finishToken(12);
return;
case 91:
if (this.hasPlugin("recordAndTuple") && this.input.charCodeAt(this.state.pos + 1) === 124) {
if (this.getPluginOption("recordAndTuple", "syntaxType") !== "bar") {
throw this.raise(Errors.TupleExpressionBarIncorrectStartSyntaxType, this.state.curPosition());
}
this.state.pos += 2;
this.finishToken(2);
} else {
++this.state.pos;
this.finishToken(0);
}
return;
case 93:
++this.state.pos;
this.finishToken(3);
return;
case 123:
if (this.hasPlugin("recordAndTuple") && this.input.charCodeAt(this.state.pos + 1) === 124) {
if (this.getPluginOption("recordAndTuple", "syntaxType") !== "bar") {
throw this.raise(Errors.RecordExpressionBarIncorrectStartSyntaxType, this.state.curPosition());
}
this.state.pos += 2;
this.finishToken(6);
} else {
++this.state.pos;
this.finishToken(5);
}
return;
case 125:
++this.state.pos;
this.finishToken(8);
return;
case 58:
if (this.hasPlugin("functionBind") && this.input.charCodeAt(this.state.pos + 1) === 58) {
this.finishOp(15, 2);
} else {
++this.state.pos;
this.finishToken(14);
}
return;
case 63:
this.readToken_question();
return;
case 96:
this.readTemplateToken();
return;
case 48:
{
const next = this.input.charCodeAt(this.state.pos + 1);
if (next === 120 || next === 88) {
this.readRadixNumber(16);
return;
}
if (next === 111 || next === 79) {
this.readRadixNumber(8);
return;
}
if (next === 98 || next === 66) {
this.readRadixNumber(2);
return;
}
}
case 49:
case 50:
case 51:
case 52:
case 53:
case 54:
case 55:
case 56:
case 57:
this.readNumber(false);
return;
case 34:
case 39:
this.readString(code);
return;
case 47:
this.readToken_slash();
return;
case 37:
case 42:
this.readToken_mult_modulo(code);
return;
case 124:
case 38:
this.readToken_pipe_amp(code);
return;
case 94:
this.readToken_caret();
return;
case 43:
case 45:
this.readToken_plus_min(code);
return;
case 60:
this.readToken_lt();
return;
case 62:
this.readToken_gt();
return;
case 61:
case 33:
this.readToken_eq_excl(code);
return;
case 126:
this.finishOp(36, 1);
return;
case 64:
this.readToken_atSign();
return;
case 35:
this.readToken_numberSign();
return;
case 92:
this.readWord();
return;
default:
if (isIdentifierStart(code)) {
this.readWord(code);
return;
}
}
throw this.raise(Errors.InvalidOrUnexpectedToken, this.state.curPosition(), {
unexpected: String.fromCodePoint(code)
});
}
finishOp(type, size) {
const str = this.input.slice(this.state.pos, this.state.pos + size);
this.state.pos += size;
this.finishToken(type, str);
}
readRegexp() {
const startLoc = this.state.startLoc;
const start = this.state.start + 1;
let escaped, inClass;
let {
pos
} = this.state;
for (;; ++pos) {
if (pos >= this.length) {
throw this.raise(Errors.UnterminatedRegExp, createPositionWithColumnOffset(startLoc, 1));
}
const ch = this.input.charCodeAt(pos);
if (isNewLine(ch)) {
throw this.raise(Errors.UnterminatedRegExp, createPositionWithColumnOffset(startLoc, 1));
}
if (escaped) {
escaped = false;
} else {
if (ch === 91) {
inClass = true;
} else if (ch === 93 && inClass) {
inClass = false;
} else if (ch === 47 && !inClass) {
break;
}
escaped = ch === 92;
}
}
const content = this.input.slice(start, pos);
++pos;
let mods = "";
const nextPos = () => createPositionWithColumnOffset(startLoc, pos + 2 - start);
while (pos < this.length) {
const cp = this.codePointAtPos(pos);
const char = String.fromCharCode(cp);
if (VALID_REGEX_FLAGS.has(cp)) {
if (cp === 118) {
if (mods.includes("u")) {
this.raise(Errors.IncompatibleRegExpUVFlags, nextPos());
}
} else if (cp === 117) {
if (mods.includes("v")) {
this.raise(Errors.IncompatibleRegExpUVFlags, nextPos());
}
}
if (mods.includes(char)) {
this.raise(Errors.DuplicateRegExpFlags, nextPos());
}
} else if (isIdentifierChar(cp) || cp === 92) {
this.raise(Errors.MalformedRegExpFlags, nextPos());
} else {
break;
}
++pos;
mods += char;
}
this.state.pos = pos;
this.finishToken(138, {
pattern: content,
flags: mods
});
}
readInt(radix, len, forceLen = false, allowNumSeparator = true) {
const {
n,
pos
} = readInt(this.input, this.state.pos, this.state.lineStart, this.state.curLine, radix, len, forceLen, allowNumSeparator, this.errorHandlers_readInt, false);
this.state.pos = pos;
return n;
}
readRadixNumber(radix) {
const start = this.state.pos;
const startLoc = this.state.curPosition();
let isBigInt = false;
this.state.pos += 2;
const val = this.readInt(radix);
if (val == null) {
this.raise(Errors.InvalidDigit, createPositionWithColumnOffset(startLoc, 2), {
radix
});
}
const next = this.input.charCodeAt(this.state.pos);
if (next === 110) {
++this.state.pos;
isBigInt = true;
} else if (next === 109) {
throw this.raise(Errors.InvalidDecimal, startLoc);
}
if (isIdentifierStart(this.codePointAtPos(this.state.pos))) {
throw this.raise(Errors.NumberIdentifier, this.state.curPosition());
}
if (isBigInt) {
const str = this.input.slice(start, this.state.pos).replace(/[_n]/g, "");
this.finishToken(136, str);
return;
}
this.finishToken(135, val);
}
readNumber(startsWithDot) {
const start = this.state.pos;
const startLoc = this.state.curPosition();
let isFloat = false;
let isBigInt = false;
let hasExponent = false;
let isOctal = false;
if (!startsWithDot && this.readInt(10) === null) {
this.raise(Errors.InvalidNumber, this.state.curPosition());
}
const hasLeadingZero = this.state.pos - start >= 2 && this.input.charCodeAt(start) === 48;
if (hasLeadingZero) {
const integer = this.input.slice(start, this.state.pos);
this.recordStrictModeErrors(Errors.StrictOctalLiteral, startLoc);
if (!this.state.strict) {
const underscorePos = integer.indexOf("_");
if (underscorePos > 0) {
this.raise(Errors.ZeroDigitNumericSeparator, createPositionWithColumnOffset(startLoc, underscorePos));
}
}
isOctal = hasLeadingZero && !/[89]/.test(integer);
}
let next = this.input.charCodeAt(this.state.pos);
if (next === 46 && !isOctal) {
++this.state.pos;
this.readInt(10);
isFloat = true;
next = this.input.charCodeAt(this.state.pos);
}
if ((next === 69 || next === 101) && !isOctal) {
next = this.input.charCodeAt(++this.state.pos);
if (next === 43 || next === 45) {
++this.state.pos;
}
if (this.readInt(10) === null) {
this.raise(Errors.InvalidOrMissingExponent, startLoc);
}
isFloat = true;
hasExponent = true;
next = this.input.charCodeAt(this.state.pos);
}
if (next === 110) {
if (isFloat || hasLeadingZero) {
this.raise(Errors.InvalidBigIntLiteral, startLoc);
}
++this.state.pos;
isBigInt = true;
}
if (next === 109) {
this.expectPlugin("decimal", this.state.curPosition());
if (hasExponent || hasLeadingZero) {
this.raise(Errors.InvalidDecimal, startLoc);
}
++this.state.pos;
var isDecimal = true;
}
if (isIdentifierStart(this.codePointAtPos(this.state.pos))) {
throw this.raise(Errors.NumberIdentifier, this.state.curPosition());
}
const str = this.input.slice(start, this.state.pos).replace(/[_mn]/g, "");
if (isBigInt) {
this.finishToken(136, str);
return;
}
if (isDecimal) {
this.finishToken(137, str);
return;
}
const val = isOctal ? parseInt(str, 8) : parseFloat(str);
this.finishToken(135, val);
}
readCodePoint(throwOnInvalid) {
const {
code,
pos
} = readCodePoint(this.input, this.state.pos, this.state.lineStart, this.state.curLine, throwOnInvalid, this.errorHandlers_readCodePoint);
this.state.pos = pos;
return code;
}
readString(quote) {
const {
str,
pos,
curLine,
lineStart
} = readStringContents(quote === 34 ? "double" : "single", this.input, this.state.pos + 1, this.state.lineStart, this.state.curLine, this.errorHandlers_readStringContents_string);
this.state.pos = pos + 1;
this.state.lineStart = lineStart;
this.state.curLine = curLine;
this.finishToken(134, str);
}
readTemplateContinuation() {
if (!this.match(8)) {
this.unexpected(null, 8);
}
this.state.pos--;
this.readTemplateToken();
}
readTemplateToken() {
const opening = this.input[this.state.pos];
const {
str,
firstInvalidLoc,
pos,
curLine,
lineStart
} = readStringContents("template", this.input, this.state.pos + 1, this.state.lineStart, this.state.curLine, this.errorHandlers_readStringContents_template);
this.state.pos = pos + 1;
this.state.lineStart = lineStart;
this.state.curLine = curLine;
if (firstInvalidLoc) {
this.state.firstInvalidTemplateEscapePos = new Position(firstInvalidLoc.curLine, firstInvalidLoc.pos - firstInvalidLoc.lineStart, this.sourceToOffsetPos(firstInvalidLoc.pos));
}
if (this.input.codePointAt(pos) === 96) {
this.finishToken(24, firstInvalidLoc ? null : opening + str + "`");
} else {
this.state.pos++;
this.finishToken(25, firstInvalidLoc ? null : opening + str + "${");
}
}
recordStrictModeErrors(toParseError, at) {
const index = at.index;
if (this.state.strict && !this.state.strictErrors.has(index)) {
this.raise(toParseError, at);
} else {
this.state.strictErrors.set(index, [toParseError, at]);
}
}
readWord1(firstCode) {
this.state.containsEsc = false;
let word = "";
const start = this.state.pos;
let chunkStart = this.state.pos;
if (firstCode !== undefined) {
this.state.pos += firstCode <= 0xffff ? 1 : 2;
}
while (this.state.pos < this.length) {
const ch = this.codePointAtPos(this.state.pos);
if (isIdentifierChar(ch)) {
this.state.pos += ch <= 0xffff ? 1 : 2;
} else if (ch === 92) {
this.state.containsEsc = true;
word += this.input.slice(chunkStart, this.state.pos);
const escStart = this.state.curPosition();
const identifierCheck = this.state.pos === start ? isIdentifierStart : isIdentifierChar;
if (this.input.charCodeAt(++this.state.pos) !== 117) {
this.raise(Errors.MissingUnicodeEscape, this.state.curPosition());
chunkStart = this.state.pos - 1;
continue;
}
++this.state.pos;
const esc = this.readCodePoint(true);
if (esc !== null) {
if (!identifierCheck(esc)) {
this.raise(Errors.EscapedCharNotAnIdentifier, escStart);
}
word += String.fromCodePoint(esc);
}
chunkStart = this.state.pos;
} else {
break;
}
}
return word + this.input.slice(chunkStart, this.state.pos);
}
readWord(firstCode) {
const word = this.readWord1(firstCode);
const type = keywords$1.get(word);
if (type !== undefined) {
this.finishToken(type, tokenLabelName(type));
} else {
this.finishToken(132, word);
}
}
checkKeywordEscapes() {
const {
type
} = this.state;
if (tokenIsKeyword(type) && this.state.containsEsc) {
this.raise(Errors.InvalidEscapedReservedWord, this.state.startLoc, {
reservedWord: tokenLabelName(type)
});
}
}
raise(toParseError, at, details = {}) {
const loc = at instanceof Position ? at : at.loc.start;
const error = toParseError(loc, details);
if (!(this.optionFlags & 2048)) throw error;
if (!this.isLookahead) this.state.errors.push(error);
return error;
}
raiseOverwrite(toParseError, at, details = {}) {
const loc = at instanceof Position ? at : at.loc.start;
const pos = loc.index;
const errors = this.state.errors;
for (let i = errors.length - 1; i >= 0; i--) {
const error = errors[i];
if (error.loc.index === pos) {
return errors[i] = toParseError(loc, details);
}
if (error.loc.index < pos) break;
}
return this.raise(toParseError, at, details);
}
updateContext(prevType) {}
unexpected(loc, type) {
throw this.raise(Errors.UnexpectedToken, loc != null ? loc : this.state.startLoc, {
expected: type ? tokenLabelName(type) : null
});
}
expectPlugin(pluginName, loc) {
if (this.hasPlugin(pluginName)) {
return true;
}
throw this.raise(Errors.MissingPlugin, loc != null ? loc : this.state.startLoc, {
missingPlugin: [pluginName]
});
}
expectOnePlugin(pluginNames) {
if (!pluginNames.some(name => this.hasPlugin(name))) {
throw this.raise(Errors.MissingOneOfPlugins, this.state.startLoc, {
missingPlugin: pluginNames
});
}
}
errorBuilder(error) {
return (pos, lineStart, curLine) => {
this.raise(error, buildPosition(pos, lineStart, curLine));
};
}
}
class ClassScope {
constructor() {
this.privateNames = new Set();
this.loneAccessors = new Map();
this.undefinedPrivateNames = new Map();
}
}
class ClassScopeHandler {
constructor(parser) {
this.parser = void 0;
this.stack = [];
this.undefinedPrivateNames = new Map();
this.parser = parser;
}
current() {
return this.stack[this.stack.length - 1];
}
enter() {
this.stack.push(new ClassScope());
}
exit() {
const oldClassScope = this.stack.pop();
const current = this.current();
for (const [name, loc] of Array.from(oldClassScope.undefinedPrivateNames)) {
if (current) {
if (!current.undefinedPrivateNames.has(name)) {
current.undefinedPrivateNames.set(name, loc);
}
} else {
this.parser.raise(Errors.InvalidPrivateFieldResolution, loc, {
identifierName: name
});
}
}
}
declarePrivateName(name, elementType, loc) {
const {
privateNames,
loneAccessors,
undefinedPrivateNames
} = this.current();
let redefined = privateNames.has(name);
if (elementType & 3) {
const accessor = redefined && loneAccessors.get(name);
if (accessor) {
const oldStatic = accessor & 4;
const newStatic = elementType & 4;
const oldKind = accessor & 3;
const newKind = elementType & 3;
redefined = oldKind === newKind || oldStatic !== newStatic;
if (!redefined) loneAccessors.delete(name);
} else if (!redefined) {
loneAccessors.set(name, elementType);
}
}
if (redefined) {
this.parser.raise(Errors.PrivateNameRedeclaration, loc, {
identifierName: name
});
}
privateNames.add(name);
undefinedPrivateNames.delete(name);
}
usePrivateName(name, loc) {
let classScope;
for (classScope of this.stack) {
if (classScope.privateNames.has(name)) return;
}
if (classScope) {
classScope.undefinedPrivateNames.set(name, loc);
} else {
this.parser.raise(Errors.InvalidPrivateFieldResolution, loc, {
identifierName: name
});
}
}
}
class ExpressionScope {
constructor(type = 0) {
this.type = type;
}
canBeArrowParameterDeclaration() {
return this.type === 2 || this.type === 1;
}
isCertainlyParameterDeclaration() {
return this.type === 3;
}
}
class ArrowHeadParsingScope extends ExpressionScope {
constructor(type) {
super(type);
this.declarationErrors = new Map();
}
recordDeclarationError(ParsingErrorClass, at) {
const index = at.index;
this.declarationErrors.set(index, [ParsingErrorClass, at]);
}
clearDeclarationError(index) {
this.declarationErrors.delete(index);
}
iterateErrors(iterator) {
this.declarationErrors.forEach(iterator);
}
}
class ExpressionScopeHandler {
constructor(parser) {
this.parser = void 0;
this.stack = [new ExpressionScope()];
this.parser = parser;
}
enter(scope) {
this.stack.push(scope);
}
exit() {
this.stack.pop();
}
recordParameterInitializerError(toParseError, node) {
const origin = node.loc.start;
const {
stack
} = this;
let i = stack.length - 1;
let scope = stack[i];
while (!scope.isCertainlyParameterDeclaration()) {
if (scope.canBeArrowParameterDeclaration()) {
scope.recordDeclarationError(toParseError, origin);
} else {
return;
}
scope = stack[--i];
}
this.parser.raise(toParseError, origin);
}
recordArrowParameterBindingError(error, node) {
const {
stack
} = this;
const scope = stack[stack.length - 1];
const origin = node.loc.start;
if (scope.isCertainlyParameterDeclaration()) {
this.parser.raise(error, origin);
} else if (scope.canBeArrowParameterDeclaration()) {
scope.recordDeclarationError(error, origin);
} else {
return;
}
}
recordAsyncArrowParametersError(at) {
const {
stack
} = this;
let i = stack.length - 1;
let scope = stack[i];
while (scope.canBeArrowParameterDeclaration()) {
if (scope.type === 2) {
scope.recordDeclarationError(Errors.AwaitBindingIdentifier, at);
}
scope = stack[--i];
}
}
validateAsPattern() {
const {
stack
} = this;
const currentScope = stack[stack.length - 1];
if (!currentScope.canBeArrowParameterDeclaration()) return;
currentScope.iterateErrors(([toParseError, loc]) => {
this.parser.raise(toParseError, loc);
let i = stack.length - 2;
let scope = stack[i];
while (scope.canBeArrowParameterDeclaration()) {
scope.clearDeclarationError(loc.index);
scope = stack[--i];
}
});
}
}
function newParameterDeclarationScope() {
return new ExpressionScope(3);
}
function newArrowHeadScope() {
return new ArrowHeadParsingScope(1);
}
function newAsyncArrowScope() {
return new ArrowHeadParsingScope(2);
}
function newExpressionScope() {
return new ExpressionScope();
}
class ProductionParameterHandler {
constructor() {
this.stacks = [];
}
enter(flags) {
this.stacks.push(flags);
}
exit() {
this.stacks.pop();
}
currentFlags() {
return this.stacks[this.stacks.length - 1];
}
get hasAwait() {
return (this.currentFlags() & 2) > 0;
}
get hasYield() {
return (this.currentFlags() & 1) > 0;
}
get hasReturn() {
return (this.currentFlags() & 4) > 0;
}
get hasIn() {
return (this.currentFlags() & 8) > 0;
}
}
function functionFlags(isAsync, isGenerator) {
return (isAsync ? 2 : 0) | (isGenerator ? 1 : 0);
}
class UtilParser extends Tokenizer {
addExtra(node, key, value, enumerable = true) {
if (!node) return;
let {
extra
} = node;
if (extra == null) {
extra = {};
node.extra = extra;
}
if (enumerable) {
extra[key] = value;
} else {
Object.defineProperty(extra, key, {
enumerable,
value
});
}
}
isContextual(token) {
return this.state.type === token && !this.state.containsEsc;
}
isUnparsedContextual(nameStart, name) {
const nameEnd = nameStart + name.length;
if (this.input.slice(nameStart, nameEnd) === name) {
const nextCh = this.input.charCodeAt(nameEnd);
return !(isIdentifierChar(nextCh) || (nextCh & 0xfc00) === 0xd800);
}
return false;
}
isLookaheadContextual(name) {
const next = this.nextTokenStart();
return this.isUnparsedContextual(next, name);
}
eatContextual(token) {
if (this.isContextual(token)) {
this.next();
return true;
}
return false;
}
expectContextual(token, toParseError) {
if (!this.eatContextual(token)) {
if (toParseError != null) {
throw this.raise(toParseError, this.state.startLoc);
}
this.unexpected(null, token);
}
}
canInsertSemicolon() {
return this.match(140) || this.match(8) || this.hasPrecedingLineBreak();
}
hasPrecedingLineBreak() {
return hasNewLine(this.input, this.offsetToSourcePos(this.state.lastTokEndLoc.index), this.state.start);
}
hasFollowingLineBreak() {
return hasNewLine(this.input, this.state.end, this.nextTokenStart());
}
isLineTerminator() {
return this.eat(13) || this.canInsertSemicolon();
}
semicolon(allowAsi = true) {
if (allowAsi ? this.isLineTerminator() : this.eat(13)) return;
this.raise(Errors.MissingSemicolon, this.state.lastTokEndLoc);
}
expect(type, loc) {
if (!this.eat(type)) {
this.unexpected(loc, type);
}
}
tryParse(fn, oldState = this.state.clone()) {
const abortSignal = {
node: null
};
try {
const node = fn((node = null) => {
abortSignal.node = node;
throw abortSignal;
});
if (this.state.errors.length > oldState.errors.length) {
const failState = this.state;
this.state = oldState;
this.state.tokensLength = failState.tokensLength;
return {
node,
error: failState.errors[oldState.errors.length],
thrown: false,
aborted: false,
failState
};
}
return {
node,
error: null,
thrown: false,
aborted: false,
failState: null
};
} catch (error) {
const failState = this.state;
this.state = oldState;
if (error instanceof SyntaxError) {
return {
node: null,
error,
thrown: true,
aborted: false,
failState
};
}
if (error === abortSignal) {
return {
node: abortSignal.node,
error: null,
thrown: false,
aborted: true,
failState
};
}
throw error;
}
}
checkExpressionErrors(refExpressionErrors, andThrow) {
if (!refExpressionErrors) return false;
const {
shorthandAssignLoc,
doubleProtoLoc,
privateKeyLoc,
optionalParametersLoc
} = refExpressionErrors;
const hasErrors = !!shorthandAssignLoc || !!doubleProtoLoc || !!optionalParametersLoc || !!privateKeyLoc;
if (!andThrow) {
return hasErrors;
}
if (shorthandAssignLoc != null) {
this.raise(Errors.InvalidCoverInitializedName, shorthandAssignLoc);
}
if (doubleProtoLoc != null) {
this.raise(Errors.DuplicateProto, doubleProtoLoc);
}
if (privateKeyLoc != null) {
this.raise(Errors.UnexpectedPrivateField, privateKeyLoc);
}
if (optionalParametersLoc != null) {
this.unexpected(optionalParametersLoc);
}
}
isLiteralPropertyName() {
return tokenIsLiteralPropertyName(this.state.type);
}
isPrivateName(node) {
return node.type === "PrivateName";
}
getPrivateNameSV(node) {
return node.id.name;
}
hasPropertyAsPrivateName(node) {
return (node.type === "MemberExpression" || node.type === "OptionalMemberExpression") && this.isPrivateName(node.property);
}
isObjectProperty(node) {
return node.type === "ObjectProperty";
}
isObjectMethod(node) {
return node.type === "ObjectMethod";
}
initializeScopes(inModule = this.options.sourceType === "module") {
const oldLabels = this.state.labels;
this.state.labels = [];
const oldExportedIdentifiers = this.exportedIdentifiers;
this.exportedIdentifiers = new Set();
const oldInModule = this.inModule;
this.inModule = inModule;
const oldScope = this.scope;
const ScopeHandler = this.getScopeHandler();
this.scope = new ScopeHandler(this, inModule);
const oldProdParam = this.prodParam;
this.prodParam = new ProductionParameterHandler();
const oldClassScope = this.classScope;
this.classScope = new ClassScopeHandler(this);
const oldExpressionScope = this.expressionScope;
this.expressionScope = new ExpressionScopeHandler(this);
return () => {
this.state.labels = oldLabels;
this.exportedIdentifiers = oldExportedIdentifiers;
this.inModule = oldInModule;
this.scope = oldScope;
this.prodParam = oldProdParam;
this.classScope = oldClassScope;
this.expressionScope = oldExpressionScope;
};
}
enterInitialScopes() {
let paramFlags = 0;
if (this.inModule) {
paramFlags |= 2;
}
if (this.optionFlags & 32) {
paramFlags |= 1;
}
this.scope.enter(1);
this.prodParam.enter(paramFlags);
}
checkDestructuringPrivate(refExpressionErrors) {
const {
privateKeyLoc
} = refExpressionErrors;
if (privateKeyLoc !== null) {
this.expectPlugin("destructuringPrivate", privateKeyLoc);
}
}
}
class ExpressionErrors {
constructor() {
this.shorthandAssignLoc = null;
this.doubleProtoLoc = null;
this.privateKeyLoc = null;
this.optionalParametersLoc = null;
}
}
class Node {
constructor(parser, pos, loc) {
this.type = "";
this.start = pos;
this.end = 0;
this.loc = new SourceLocation(loc);
if ((parser == null ? void 0 : parser.optionFlags) & 128) this.range = [pos, 0];
if (parser != null && parser.filename) this.loc.filename = parser.filename;
}
}
const NodePrototype = Node.prototype;
{
NodePrototype.__clone = function () {
const newNode = new Node(undefined, this.start, this.loc.start);
const keys = Object.keys(this);
for (let i = 0, length = keys.length; i < length; i++) {
const key = keys[i];
if (key !== "leadingComments" && key !== "trailingComments" && key !== "innerComments") {
newNode[key] = this[key];
}
}
return newNode;
};
}
function clonePlaceholder(node) {
return cloneIdentifier(node);
}
function cloneIdentifier(node) {
const {
type,
start,
end,
loc,
range,
extra,
name
} = node;
const cloned = Object.create(NodePrototype);
cloned.type = type;
cloned.start = start;
cloned.end = end;
cloned.loc = loc;
cloned.range = range;
cloned.extra = extra;
cloned.name = name;
if (type === "Placeholder") {
cloned.expectedNode = node.expectedNode;
}
return cloned;
}
function cloneStringLiteral(node) {
const {
type,
start,
end,
loc,
range,
extra
} = node;
if (type === "Placeholder") {
return clonePlaceholder(node);
}
const cloned = Object.create(NodePrototype);
cloned.type = type;
cloned.start = start;
cloned.end = end;
cloned.loc = loc;
cloned.range = range;
if (node.raw !== undefined) {
cloned.raw = node.raw;
} else {
cloned.extra = extra;
}
cloned.value = node.value;
return cloned;
}
class NodeUtils extends UtilParser {
startNode() {
const loc = this.state.startLoc;
return new Node(this, loc.index, loc);
}
startNodeAt(loc) {
return new Node(this, loc.index, loc);
}
startNodeAtNode(type) {
return this.startNodeAt(type.loc.start);
}
finishNode(node, type) {
return this.finishNodeAt(node, type, this.state.lastTokEndLoc);
}
finishNodeAt(node, type, endLoc) {
node.type = type;
node.end = endLoc.index;
node.loc.end = endLoc;
if (this.optionFlags & 128) node.range[1] = endLoc.index;
if (this.optionFlags & 4096) {
this.processComment(node);
}
return node;
}
resetStartLocation(node, startLoc) {
node.start = startLoc.index;
node.loc.start = startLoc;
if (this.optionFlags & 128) node.range[0] = startLoc.index;
}
resetEndLocation(node, endLoc = this.state.lastTokEndLoc) {
node.end = endLoc.index;
node.loc.end = endLoc;
if (this.optionFlags & 128) node.range[1] = endLoc.index;
}
resetStartLocationFromNode(node, locationNode) {
this.resetStartLocation(node, locationNode.loc.start);
}
}
const reservedTypes = new Set(["_", "any", "bool", "boolean", "empty", "extends", "false", "interface", "mixed", "null", "number", "static", "string", "true", "typeof", "void"]);
const FlowErrors = ParseErrorEnum`flow`({
AmbiguousConditionalArrow: "Ambiguous expression: wrap the arrow functions in parentheses to disambiguate.",
AmbiguousDeclareModuleKind: "Found both `declare module.exports` and `declare export` in the same module. Modules can only have 1 since they are either an ES module or they are a CommonJS module.",
AssignReservedType: ({
reservedType
}) => `Cannot overwrite reserved type ${reservedType}.`,
DeclareClassElement: "The `declare` modifier can only appear on class fields.",
DeclareClassFieldInitializer: "Initializers are not allowed in fields with the `declare` modifier.",
DuplicateDeclareModuleExports: "Duplicate `declare module.exports` statement.",
EnumBooleanMemberNotInitialized: ({
memberName,
enumName
}) => `Boolean enum members need to be initialized. Use either \`${memberName} = true,\` or \`${memberName} = false,\` in enum \`${enumName}\`.`,
EnumDuplicateMemberName: ({
memberName,
enumName
}) => `Enum member names need to be unique, but the name \`${memberName}\` has already been used before in enum \`${enumName}\`.`,
EnumInconsistentMemberValues: ({
enumName
}) => `Enum \`${enumName}\` has inconsistent member initializers. Either use no initializers, or consistently use literals (either booleans, numbers, or strings) for all member initializers.`,
EnumInvalidExplicitType: ({
invalidEnumType,
enumName
}) => `Enum type \`${invalidEnumType}\` is not valid. Use one of \`boolean\`, \`number\`, \`string\`, or \`symbol\` in enum \`${enumName}\`.`,
EnumInvalidExplicitTypeUnknownSupplied: ({
enumName
}) => `Supplied enum type is not valid. Use one of \`boolean\`, \`number\`, \`string\`, or \`symbol\` in enum \`${enumName}\`.`,
EnumInvalidMemberInitializerPrimaryType: ({
enumName,
memberName,
explicitType
}) => `Enum \`${enumName}\` has type \`${explicitType}\`, so the initializer of \`${memberName}\` needs to be a ${explicitType} literal.`,
EnumInvalidMemberInitializerSymbolType: ({
enumName,
memberName
}) => `Symbol enum members cannot be initialized. Use \`${memberName},\` in enum \`${enumName}\`.`,
EnumInvalidMemberInitializerUnknownType: ({
enumName,
memberName
}) => `The enum member initializer for \`${memberName}\` needs to be a literal (either a boolean, number, or string) in enum \`${enumName}\`.`,
EnumInvalidMemberName: ({
enumName,
memberName,
suggestion
}) => `Enum member names cannot start with lowercase 'a' through 'z'. Instead of using \`${memberName}\`, consider using \`${suggestion}\`, in enum \`${enumName}\`.`,
EnumNumberMemberNotInitialized: ({
enumName,
memberName
}) => `Number enum members need to be initialized, e.g. \`${memberName} = 1\` in enum \`${enumName}\`.`,
EnumStringMemberInconsistentlyInitialized: ({
enumName
}) => `String enum members need to consistently either all use initializers, or use no initializers, in enum \`${enumName}\`.`,
GetterMayNotHaveThisParam: "A getter cannot have a `this` parameter.",
ImportReflectionHasImportType: "An `import module` declaration can not use `type` or `typeof` keyword.",
ImportTypeShorthandOnlyInPureImport: "The `type` and `typeof` keywords on named imports can only be used on regular `import` statements. It cannot be used with `import type` or `import typeof` statements.",
InexactInsideExact: "Explicit inexact syntax cannot appear inside an explicit exact object type.",
InexactInsideNonObject: "Explicit inexact syntax cannot appear in class or interface definitions.",
InexactVariance: "Explicit inexact syntax cannot have variance.",
InvalidNonTypeImportInDeclareModule: "Imports within a `declare module` body must always be `import type` or `import typeof`.",
MissingTypeParamDefault: "Type parameter declaration needs a default, since a preceding type parameter declaration has a default.",
NestedDeclareModule: "`declare module` cannot be used inside another `declare module`.",
NestedFlowComment: "Cannot have a flow comment inside another flow comment.",
PatternIsOptional: Object.assign({
message: "A binding pattern parameter cannot be optional in an implementation signature."
}, {
reasonCode: "OptionalBindingPattern"
}),
SetterMayNotHaveThisParam: "A setter cannot have a `this` parameter.",
SpreadVariance: "Spread properties cannot have variance.",
ThisParamAnnotationRequired: "A type annotation is required for the `this` parameter.",
ThisParamBannedInConstructor: "Constructors cannot have a `this` parameter; constructors don't bind `this` like other functions.",
ThisParamMayNotBeOptional: "The `this` parameter cannot be optional.",
ThisParamMustBeFirst: "The `this` parameter must be the first function parameter.",
ThisParamNoDefault: "The `this` parameter may not have a default value.",
TypeBeforeInitializer: "Type annotations must come before default assignments, e.g. instead of `age = 25: number` use `age: number = 25`.",
TypeCastInPattern: "The type cast expression is expected to be wrapped with parenthesis.",
UnexpectedExplicitInexactInObject: "Explicit inexact syntax must appear at the end of an inexact object.",
UnexpectedReservedType: ({
reservedType
}) => `Unexpected reserved type ${reservedType}.`,
UnexpectedReservedUnderscore: "`_` is only allowed as a type argument to call or new.",
UnexpectedSpaceBetweenModuloChecks: "Spaces between `%` and `checks` are not allowed here.",
UnexpectedSpreadType: "Spread operator cannot appear in class or interface definitions.",
UnexpectedSubtractionOperand: 'Unexpected token, expected "number" or "bigint".',
UnexpectedTokenAfterTypeParameter: "Expected an arrow function after this type parameter declaration.",
UnexpectedTypeParameterBeforeAsyncArrowFunction: "Type parameters must come after the async keyword, e.g. instead of `<T> async () => {}`, use `async <T>() => {}`.",
UnsupportedDeclareExportKind: ({
unsupportedExportKind,
suggestion
}) => `\`declare export ${unsupportedExportKind}\` is not supported. Use \`${suggestion}\` instead.`,
UnsupportedStatementInDeclareModule: "Only declares and type imports are allowed inside declare module.",
UnterminatedFlowComment: "Unterminated flow-comment."
});
function isEsModuleType(bodyElement) {
return bodyElement.type === "DeclareExportAllDeclaration" || bodyElement.type === "DeclareExportDeclaration" && (!bodyElement.declaration || bodyElement.declaration.type !== "TypeAlias" && bodyElement.declaration.type !== "InterfaceDeclaration");
}
function hasTypeImportKind(node) {
return node.importKind === "type" || node.importKind === "typeof";
}
const exportSuggestions = {
const: "declare export var",
let: "declare export var",
type: "export type",
interface: "export interface"
};
function partition(list, test) {
const list1 = [];
const list2 = [];
for (let i = 0; i < list.length; i++) {
(test(list[i], i, list) ? list1 : list2).push(list[i]);
}
return [list1, list2];
}
const FLOW_PRAGMA_REGEX = /\*?\s*@((?:no)?flow)\b/;
var flow = superClass => class FlowParserMixin extends superClass {
constructor(...args) {
super(...args);
this.flowPragma = undefined;
}
getScopeHandler() {
return FlowScopeHandler;
}
shouldParseTypes() {
return this.getPluginOption("flow", "all") || this.flowPragma === "flow";
}
finishToken(type, val) {
if (type !== 134 && type !== 13 && type !== 28) {
if (this.flowPragma === undefined) {
this.flowPragma = null;
}
}
super.finishToken(type, val);
}
addComment(comment) {
if (this.flowPragma === undefined) {
const matches = FLOW_PRAGMA_REGEX.exec(comment.value);
if (!matches) ;else if (matches[1] === "flow") {
this.flowPragma = "flow";
} else if (matches[1] === "noflow") {
this.flowPragma = "noflow";
} else {
throw new Error("Unexpected flow pragma");
}
}
super.addComment(comment);
}
flowParseTypeInitialiser(tok) {
const oldInType = this.state.inType;
this.state.inType = true;
this.expect(tok || 14);
const type = this.flowParseType();
this.state.inType = oldInType;
return type;
}
flowParsePredicate() {
const node = this.startNode();
const moduloLoc = this.state.startLoc;
this.next();
this.expectContextual(110);
if (this.state.lastTokStartLoc.index > moduloLoc.index + 1) {
this.raise(FlowErrors.UnexpectedSpaceBetweenModuloChecks, moduloLoc);
}
if (this.eat(10)) {
node.value = super.parseExpression();
this.expect(11);
return this.finishNode(node, "DeclaredPredicate");
} else {
return this.finishNode(node, "InferredPredicate");
}
}
flowParseTypeAndPredicateInitialiser() {
const oldInType = this.state.inType;
this.state.inType = true;
this.expect(14);
let type = null;
let predicate = null;
if (this.match(54)) {
this.state.inType = oldInType;
predicate = this.flowParsePredicate();
} else {
type = this.flowParseType();
this.state.inType = oldInType;
if (this.match(54)) {
predicate = this.flowParsePredicate();
}
}
return [type, predicate];
}
flowParseDeclareClass(node) {
this.next();
this.flowParseInterfaceish(node, true);
return this.finishNode(node, "DeclareClass");
}
flowParseDeclareFunction(node) {
this.next();
const id = node.id = this.parseIdentifier();
const typeNode = this.startNode();
const typeContainer = this.startNode();
if (this.match(47)) {
typeNode.typeParameters = this.flowParseTypeParameterDeclaration();
} else {
typeNode.typeParameters = null;
}
this.expect(10);
const tmp = this.flowParseFunctionTypeParams();
typeNode.params = tmp.params;
typeNode.rest = tmp.rest;
typeNode.this = tmp._this;
this.expect(11);
[typeNode.returnType, node.predicate] = this.flowParseTypeAndPredicateInitialiser();
typeContainer.typeAnnotation = this.finishNode(typeNode, "FunctionTypeAnnotation");
id.typeAnnotation = this.finishNode(typeContainer, "TypeAnnotation");
this.resetEndLocation(id);
this.semicolon();
this.scope.declareName(node.id.name, 2048, node.id.loc.start);
return this.finishNode(node, "DeclareFunction");
}
flowParseDeclare(node, insideModule) {
if (this.match(80)) {
return this.flowParseDeclareClass(node);
} else if (this.match(68)) {
return this.flowParseDeclareFunction(node);
} else if (this.match(74)) {
return this.flowParseDeclareVariable(node);
} else if (this.eatContextual(127)) {
if (this.match(16)) {
return this.flowParseDeclareModuleExports(node);
} else {
if (insideModule) {
this.raise(FlowErrors.NestedDeclareModule, this.state.lastTokStartLoc);
}
return this.flowParseDeclareModule(node);
}
} else if (this.isContextual(130)) {
return this.flowParseDeclareTypeAlias(node);
} else if (this.isContextual(131)) {
return this.flowParseDeclareOpaqueType(node);
} else if (this.isContextual(129)) {
return this.flowParseDeclareInterface(node);
} else if (this.match(82)) {
return this.flowParseDeclareExportDeclaration(node, insideModule);
} else {
this.unexpected();
}
}
flowParseDeclareVariable(node) {
this.next();
node.id = this.flowParseTypeAnnotatableIdentifier(true);
this.scope.declareName(node.id.name, 5, node.id.loc.start);
this.semicolon();
return this.finishNode(node, "DeclareVariable");
}
flowParseDeclareModule(node) {
this.scope.enter(0);
if (this.match(134)) {
node.id = super.parseExprAtom();
} else {
node.id = this.parseIdentifier();
}
const bodyNode = node.body = this.startNode();
const body = bodyNode.body = [];
this.expect(5);
while (!this.match(8)) {
let bodyNode = this.startNode();
if (this.match(83)) {
this.next();
if (!this.isContextual(130) && !this.match(87)) {
this.raise(FlowErrors.InvalidNonTypeImportInDeclareModule, this.state.lastTokStartLoc);
}
super.parseImport(bodyNode);
} else {
this.expectContextual(125, FlowErrors.UnsupportedStatementInDeclareModule);
bodyNode = this.flowParseDeclare(bodyNode, true);
}
body.push(bodyNode);
}
this.scope.exit();
this.expect(8);
this.finishNode(bodyNode, "BlockStatement");
let kind = null;
let hasModuleExport = false;
body.forEach(bodyElement => {
if (isEsModuleType(bodyElement)) {
if (kind === "CommonJS") {
this.raise(FlowErrors.AmbiguousDeclareModuleKind, bodyElement);
}
kind = "ES";
} else if (bodyElement.type === "DeclareModuleExports") {
if (hasModuleExport) {
this.raise(FlowErrors.DuplicateDeclareModuleExports, bodyElement);
}
if (kind === "ES") {
this.raise(FlowErrors.AmbiguousDeclareModuleKind, bodyElement);
}
kind = "CommonJS";
hasModuleExport = true;
}
});
node.kind = kind || "CommonJS";
return this.finishNode(node, "DeclareModule");
}
flowParseDeclareExportDeclaration(node, insideModule) {
this.expect(82);
if (this.eat(65)) {
if (this.match(68) || this.match(80)) {
node.declaration = this.flowParseDeclare(this.startNode());
} else {
node.declaration = this.flowParseType();
this.semicolon();
}
node.default = true;
return this.finishNode(node, "DeclareExportDeclaration");
} else {
if (this.match(75) || this.isLet() || (this.isContextual(130) || this.isContextual(129)) && !insideModule) {
const label = this.state.value;
throw this.raise(FlowErrors.UnsupportedDeclareExportKind, this.state.startLoc, {
unsupportedExportKind: label,
suggestion: exportSuggestions[label]
});
}
if (this.match(74) || this.match(68) || this.match(80) || this.isContextual(131)) {
node.declaration = this.flowParseDeclare(this.startNode());
node.default = false;
return this.finishNode(node, "DeclareExportDeclaration");
} else if (this.match(55) || this.match(5) || this.isContextual(129) || this.isContextual(130) || this.isContextual(131)) {
node = this.parseExport(node, null);
if (node.type === "ExportNamedDeclaration") {
node.type = "ExportDeclaration";
node.default = false;
delete node.exportKind;
}
node.type = "Declare" + node.type;
return node;
}
}
this.unexpected();
}
flowParseDeclareModuleExports(node) {
this.next();
this.expectContextual(111);
node.typeAnnotation = this.flowParseTypeAnnotation();
this.semicolon();
return this.finishNode(node, "DeclareModuleExports");
}
flowParseDeclareTypeAlias(node) {
this.next();
const finished = this.flowParseTypeAlias(node);
finished.type = "DeclareTypeAlias";
return finished;
}
flowParseDeclareOpaqueType(node) {
this.next();
const finished = this.flowParseOpaqueType(node, true);
finished.type = "DeclareOpaqueType";
return finished;
}
flowParseDeclareInterface(node) {
this.next();
this.flowParseInterfaceish(node, false);
return this.finishNode(node, "DeclareInterface");
}
flowParseInterfaceish(node, isClass) {
node.id = this.flowParseRestrictedIdentifier(!isClass, true);
this.scope.declareName(node.id.name, isClass ? 17 : 8201, node.id.loc.start);
if (this.match(47)) {
node.typeParameters = this.flowParseTypeParameterDeclaration();
} else {
node.typeParameters = null;
}
node.extends = [];
if (this.eat(81)) {
do {
node.extends.push(this.flowParseInterfaceExtends());
} while (!isClass && this.eat(12));
}
if (isClass) {
node.implements = [];
node.mixins = [];
if (this.eatContextual(117)) {
do {
node.mixins.push(this.flowParseInterfaceExtends());
} while (this.eat(12));
}
if (this.eatContextual(113)) {
do {
node.implements.push(this.flowParseInterfaceExtends());
} while (this.eat(12));
}
}
node.body = this.flowParseObjectType({
allowStatic: isClass,
allowExact: false,
allowSpread: false,
allowProto: isClass,
allowInexact: false
});
}
flowParseInterfaceExtends() {
const node = this.startNode();
node.id = this.flowParseQualifiedTypeIdentifier();
if (this.match(47)) {
node.typeParameters = this.flowParseTypeParameterInstantiation();
} else {
node.typeParameters = null;
}
return this.finishNode(node, "InterfaceExtends");
}
flowParseInterface(node) {
this.flowParseInterfaceish(node, false);
return this.finishNode(node, "InterfaceDeclaration");
}
checkNotUnderscore(word) {
if (word === "_") {
this.raise(FlowErrors.UnexpectedReservedUnderscore, this.state.startLoc);
}
}
checkReservedType(word, startLoc, declaration) {
if (!reservedTypes.has(word)) return;
this.raise(declaration ? FlowErrors.AssignReservedType : FlowErrors.UnexpectedReservedType, startLoc, {
reservedType: word
});
}
flowParseRestrictedIdentifier(liberal, declaration) {
this.checkReservedType(this.state.value, this.state.startLoc, declaration);
return this.parseIdentifier(liberal);
}
flowParseTypeAlias(node) {
node.id = this.flowParseRestrictedIdentifier(false, true);
this.scope.declareName(node.id.name, 8201, node.id.loc.start);
if (this.match(47)) {
node.typeParameters = this.flowParseTypeParameterDeclaration();
} else {
node.typeParameters = null;
}
node.right = this.flowParseTypeInitialiser(29);
this.semicolon();
return this.finishNode(node, "TypeAlias");
}
flowParseOpaqueType(node, declare) {
this.expectContextual(130);
node.id = this.flowParseRestrictedIdentifier(true, true);
this.scope.declareName(node.id.name, 8201, node.id.loc.start);
if (this.match(47)) {
node.typeParameters = this.flowParseTypeParameterDeclaration();
} else {
node.typeParameters = null;
}
node.supertype = null;
if (this.match(14)) {
node.supertype = this.flowParseTypeInitialiser(14);
}
node.impltype = null;
if (!declare) {
node.impltype = this.flowParseTypeInitialiser(29);
}
this.semicolon();
return this.finishNode(node, "OpaqueType");
}
flowParseTypeParameter(requireDefault = false) {
const nodeStartLoc = this.state.startLoc;
const node = this.startNode();
const variance = this.flowParseVariance();
const ident = this.flowParseTypeAnnotatableIdentifier();
node.name = ident.name;
node.variance = variance;
node.bound = ident.typeAnnotation;
if (this.match(29)) {
this.eat(29);
node.default = this.flowParseType();
} else {
if (requireDefault) {
this.raise(FlowErrors.MissingTypeParamDefault, nodeStartLoc);
}
}
return this.finishNode(node, "TypeParameter");
}
flowParseTypeParameterDeclaration() {
const oldInType = this.state.inType;
const node = this.startNode();
node.params = [];
this.state.inType = true;
if (this.match(47) || this.match(143)) {
this.next();
} else {
this.unexpected();
}
let defaultRequired = false;
do {
const typeParameter = this.flowParseTypeParameter(defaultRequired);
node.params.push(typeParameter);
if (typeParameter.default) {
defaultRequired = true;
}
if (!this.match(48)) {
this.expect(12);
}
} while (!this.match(48));
this.expect(48);
this.state.inType = oldInType;
return this.finishNode(node, "TypeParameterDeclaration");
}
flowInTopLevelContext(cb) {
if (this.curContext() !== types.brace) {
const oldContext = this.state.context;
this.state.context = [oldContext[0]];
try {
return cb();
} finally {
this.state.context = oldContext;
}
} else {
return cb();
}
}
flowParseTypeParameterInstantiationInExpression() {
if (this.reScan_lt() !== 47) return;
return this.flowParseTypeParameterInstantiation();
}
flowParseTypeParameterInstantiation() {
const node = this.startNode();
const oldInType = this.state.inType;
this.state.inType = true;
node.params = [];
this.flowInTopLevelContext(() => {
this.expect(47);
const oldNoAnonFunctionType = this.state.noAnonFunctionType;
this.state.noAnonFunctionType = false;
while (!this.match(48)) {
node.params.push(this.flowParseType());
if (!this.match(48)) {
this.expect(12);
}
}
this.state.noAnonFunctionType = oldNoAnonFunctionType;
});
this.state.inType = oldInType;
if (!this.state.inType && this.curContext() === types.brace) {
this.reScan_lt_gt();
}
this.expect(48);
return this.finishNode(node, "TypeParameterInstantiation");
}
flowParseTypeParameterInstantiationCallOrNew() {
if (this.reScan_lt() !== 47) return;
const node = this.startNode();
const oldInType = this.state.inType;
node.params = [];
this.state.inType = true;
this.expect(47);
while (!this.match(48)) {
node.params.push(this.flowParseTypeOrImplicitInstantiation());
if (!this.match(48)) {
this.expect(12);
}
}
this.expect(48);
this.state.inType = oldInType;
return this.finishNode(node, "TypeParameterInstantiation");
}
flowParseInterfaceType() {
const node = this.startNode();
this.expectContextual(129);
node.extends = [];
if (this.eat(81)) {
do {
node.extends.push(this.flowParseInterfaceExtends());
} while (this.eat(12));
}
node.body = this.flowParseObjectType({
allowStatic: false,
allowExact: false,
allowSpread: false,
allowProto: false,
allowInexact: false
});
return this.finishNode(node, "InterfaceTypeAnnotation");
}
flowParseObjectPropertyKey() {
return this.match(135) || this.match(134) ? super.parseExprAtom() : this.parseIdentifier(true);
}
flowParseObjectTypeIndexer(node, isStatic, variance) {
node.static = isStatic;
if (this.lookahead().type === 14) {
node.id = this.flowParseObjectPropertyKey();
node.key = this.flowParseTypeInitialiser();
} else {
node.id = null;
node.key = this.flowParseType();
}
this.expect(3);
node.value = this.flowParseTypeInitialiser();
node.variance = variance;
return this.finishNode(node, "ObjectTypeIndexer");
}
flowParseObjectTypeInternalSlot(node, isStatic) {
node.static = isStatic;
node.id = this.flowParseObjectPropertyKey();
this.expect(3);
this.expect(3);
if (this.match(47) || this.match(10)) {
node.method = true;
node.optional = false;
node.value = this.flowParseObjectTypeMethodish(this.startNodeAt(node.loc.start));
} else {
node.method = false;
if (this.eat(17)) {
node.optional = true;
}
node.value = this.flowParseTypeInitialiser();
}
return this.finishNode(node, "ObjectTypeInternalSlot");
}
flowParseObjectTypeMethodish(node) {
node.params = [];
node.rest = null;
node.typeParameters = null;
node.this = null;
if (this.match(47)) {
node.typeParameters = this.flowParseTypeParameterDeclaration();
}
this.expect(10);
if (this.match(78)) {
node.this = this.flowParseFunctionTypeParam(true);
node.this.name = null;
if (!this.match(11)) {
this.expect(12);
}
}
while (!this.match(11) && !this.match(21)) {
node.params.push(this.flowParseFunctionTypeParam(false));
if (!this.match(11)) {
this.expect(12);
}
}
if (this.eat(21)) {
node.rest = this.flowParseFunctionTypeParam(false);
}
this.expect(11);
node.returnType = this.flowParseTypeInitialiser();
return this.finishNode(node, "FunctionTypeAnnotation");
}
flowParseObjectTypeCallProperty(node, isStatic) {
const valueNode = this.startNode();
node.static = isStatic;
node.value = this.flowParseObjectTypeMethodish(valueNode);
return this.finishNode(node, "ObjectTypeCallProperty");
}
flowParseObjectType({
allowStatic,
allowExact,
allowSpread,
allowProto,
allowInexact
}) {
const oldInType = this.state.inType;
this.state.inType = true;
const nodeStart = this.startNode();
nodeStart.callProperties = [];
nodeStart.properties = [];
nodeStart.indexers = [];
nodeStart.internalSlots = [];
let endDelim;
let exact;
let inexact = false;
if (allowExact && this.match(6)) {
this.expect(6);
endDelim = 9;
exact = true;
} else {
this.expect(5);
endDelim = 8;
exact = false;
}
nodeStart.exact = exact;
while (!this.match(endDelim)) {
let isStatic = false;
let protoStartLoc = null;
let inexactStartLoc = null;
const node = this.startNode();
if (allowProto && this.isContextual(118)) {
const lookahead = this.lookahead();
if (lookahead.type !== 14 && lookahead.type !== 17) {
this.next();
protoStartLoc = this.state.startLoc;
allowStatic = false;
}
}
if (allowStatic && this.isContextual(106)) {
const lookahead = this.lookahead();
if (lookahead.type !== 14 && lookahead.type !== 17) {
this.next();
isStatic = true;
}
}
const variance = this.flowParseVariance();
if (this.eat(0)) {
if (protoStartLoc != null) {
this.unexpected(protoStartLoc);
}
if (this.eat(0)) {
if (variance) {
this.unexpected(variance.loc.start);
}
nodeStart.internalSlots.push(this.flowParseObjectTypeInternalSlot(node, isStatic));
} else {
nodeStart.indexers.push(this.flowParseObjectTypeIndexer(node, isStatic, variance));
}
} else if (this.match(10) || this.match(47)) {
if (protoStartLoc != null) {
this.unexpected(protoStartLoc);
}
if (variance) {
this.unexpected(variance.loc.start);
}
nodeStart.callProperties.push(this.flowParseObjectTypeCallProperty(node, isStatic));
} else {
let kind = "init";
if (this.isContextual(99) || this.isContextual(104)) {
const lookahead = this.lookahead();
if (tokenIsLiteralPropertyName(lookahead.type)) {
kind = this.state.value;
this.next();
}
}
const propOrInexact = this.flowParseObjectTypeProperty(node, isStatic, protoStartLoc, variance, kind, allowSpread, allowInexact != null ? allowInexact : !exact);
if (propOrInexact === null) {
inexact = true;
inexactStartLoc = this.state.lastTokStartLoc;
} else {
nodeStart.properties.push(propOrInexact);
}
}
this.flowObjectTypeSemicolon();
if (inexactStartLoc && !this.match(8) && !this.match(9)) {
this.raise(FlowErrors.UnexpectedExplicitInexactInObject, inexactStartLoc);
}
}
this.expect(endDelim);
if (allowSpread) {
nodeStart.inexact = inexact;
}
const out = this.finishNode(nodeStart, "ObjectTypeAnnotation");
this.state.inType = oldInType;
return out;
}
flowParseObjectTypeProperty(node, isStatic, protoStartLoc, variance, kind, allowSpread, allowInexact) {
if (this.eat(21)) {
const isInexactToken = this.match(12) || this.match(13) || this.match(8) || this.match(9);
if (isInexactToken) {
if (!allowSpread) {
this.raise(FlowErrors.InexactInsideNonObject, this.state.lastTokStartLoc);
} else if (!allowInexact) {
this.raise(FlowErrors.InexactInsideExact, this.state.lastTokStartLoc);
}
if (variance) {
this.raise(FlowErrors.InexactVariance, variance);
}
return null;
}
if (!allowSpread) {
this.raise(FlowErrors.UnexpectedSpreadType, this.state.lastTokStartLoc);
}
if (protoStartLoc != null) {
this.unexpected(protoStartLoc);
}
if (variance) {
this.raise(FlowErrors.SpreadVariance, variance);
}
node.argument = this.flowParseType();
return this.finishNode(node, "ObjectTypeSpreadProperty");
} else {
node.key = this.flowParseObjectPropertyKey();
node.static = isStatic;
node.proto = protoStartLoc != null;
node.kind = kind;
let optional = false;
if (this.match(47) || this.match(10)) {
node.method = true;
if (protoStartLoc != null) {
this.unexpected(protoStartLoc);
}
if (variance) {
this.unexpected(variance.loc.start);
}
node.value = this.flowParseObjectTypeMethodish(this.startNodeAt(node.loc.start));
if (kind === "get" || kind === "set") {
this.flowCheckGetterSetterParams(node);
}
if (!allowSpread && node.key.name === "constructor" && node.value.this) {
this.raise(FlowErrors.ThisParamBannedInConstructor, node.value.this);
}
} else {
if (kind !== "init") this.unexpected();
node.method = false;
if (this.eat(17)) {
optional = true;
}
node.value = this.flowParseTypeInitialiser();
node.variance = variance;
}
node.optional = optional;
return this.finishNode(node, "ObjectTypeProperty");
}
}
flowCheckGetterSetterParams(property) {
const paramCount = property.kind === "get" ? 0 : 1;
const length = property.value.params.length + (property.value.rest ? 1 : 0);
if (property.value.this) {
this.raise(property.kind === "get" ? FlowErrors.GetterMayNotHaveThisParam : FlowErrors.SetterMayNotHaveThisParam, property.value.this);
}
if (length !== paramCount) {
this.raise(property.kind === "get" ? Errors.BadGetterArity : Errors.BadSetterArity, property);
}
if (property.kind === "set" && property.value.rest) {
this.raise(Errors.BadSetterRestParameter, property);
}
}
flowObjectTypeSemicolon() {
if (!this.eat(13) && !this.eat(12) && !this.match(8) && !this.match(9)) {
this.unexpected();
}
}
flowParseQualifiedTypeIdentifier(startLoc, id) {
startLoc != null ? startLoc : startLoc = this.state.startLoc;
let node = id || this.flowParseRestrictedIdentifier(true);
while (this.eat(16)) {
const node2 = this.startNodeAt(startLoc);
node2.qualification = node;
node2.id = this.flowParseRestrictedIdentifier(true);
node = this.finishNode(node2, "QualifiedTypeIdentifier");
}
return node;
}
flowParseGenericType(startLoc, id) {
const node = this.startNodeAt(startLoc);
node.typeParameters = null;
node.id = this.flowParseQualifiedTypeIdentifier(startLoc, id);
if (this.match(47)) {
node.typeParameters = this.flowParseTypeParameterInstantiation();
}
return this.finishNode(node, "GenericTypeAnnotation");
}
flowParseTypeofType() {
const node = this.startNode();
this.expect(87);
node.argument = this.flowParsePrimaryType();
return this.finishNode(node, "TypeofTypeAnnotation");
}
flowParseTupleType() {
const node = this.startNode();
node.types = [];
this.expect(0);
while (this.state.pos < this.length && !this.match(3)) {
node.types.push(this.flowParseType());
if (this.match(3)) break;
this.expect(12);
}
this.expect(3);
return this.finishNode(node, "TupleTypeAnnotation");
}
flowParseFunctionTypeParam(first) {
let name = null;
let optional = false;
let typeAnnotation = null;
const node = this.startNode();
const lh = this.lookahead();
const isThis = this.state.type === 78;
if (lh.type === 14 || lh.type === 17) {
if (isThis && !first) {
this.raise(FlowErrors.ThisParamMustBeFirst, node);
}
name = this.parseIdentifier(isThis);
if (this.eat(17)) {
optional = true;
if (isThis) {
this.raise(FlowErrors.ThisParamMayNotBeOptional, node);
}
}
typeAnnotation = this.flowParseTypeInitialiser();
} else {
typeAnnotation = this.flowParseType();
}
node.name = name;
node.optional = optional;
node.typeAnnotation = typeAnnotation;
return this.finishNode(node, "FunctionTypeParam");
}
reinterpretTypeAsFunctionTypeParam(type) {
const node = this.startNodeAt(type.loc.start);
node.name = null;
node.optional = false;
node.typeAnnotation = type;
return this.finishNode(node, "FunctionTypeParam");
}
flowParseFunctionTypeParams(params = []) {
let rest = null;
let _this = null;
if (this.match(78)) {
_this = this.flowParseFunctionTypeParam(true);
_this.name = null;
if (!this.match(11)) {
this.expect(12);
}
}
while (!this.match(11) && !this.match(21)) {
params.push(this.flowParseFunctionTypeParam(false));
if (!this.match(11)) {
this.expect(12);
}
}
if (this.eat(21)) {
rest = this.flowParseFunctionTypeParam(false);
}
return {
params,
rest,
_this
};
}
flowIdentToTypeAnnotation(startLoc, node, id) {
switch (id.name) {
case "any":
return this.finishNode(node, "AnyTypeAnnotation");
case "bool":
case "boolean":
return this.finishNode(node, "BooleanTypeAnnotation");
case "mixed":
return this.finishNode(node, "MixedTypeAnnotation");
case "empty":
return this.finishNode(node, "EmptyTypeAnnotation");
case "number":
return this.finishNode(node, "NumberTypeAnnotation");
case "string":
return this.finishNode(node, "StringTypeAnnotation");
case "symbol":
return this.finishNode(node, "SymbolTypeAnnotation");
default:
this.checkNotUnderscore(id.name);
return this.flowParseGenericType(startLoc, id);
}
}
flowParsePrimaryType() {
const startLoc = this.state.startLoc;
const node = this.startNode();
let tmp;
let type;
let isGroupedType = false;
const oldNoAnonFunctionType = this.state.noAnonFunctionType;
switch (this.state.type) {
case 5:
return this.flowParseObjectType({
allowStatic: false,
allowExact: false,
allowSpread: true,
allowProto: false,
allowInexact: true
});
case 6:
return this.flowParseObjectType({
allowStatic: false,
allowExact: true,
allowSpread: true,
allowProto: false,
allowInexact: false
});
case 0:
this.state.noAnonFunctionType = false;
type = this.flowParseTupleType();
this.state.noAnonFunctionType = oldNoAnonFunctionType;
return type;
case 47:
{
const node = this.startNode();
node.typeParameters = this.flowParseTypeParameterDeclaration();
this.expect(10);
tmp = this.flowParseFunctionTypeParams();
node.params = tmp.params;
node.rest = tmp.rest;
node.this = tmp._this;
this.expect(11);
this.expect(19);
node.returnType = this.flowParseType();
return this.finishNode(node, "FunctionTypeAnnotation");
}
case 10:
{
const node = this.startNode();
this.next();
if (!this.match(11) && !this.match(21)) {
if (tokenIsIdentifier(this.state.type) || this.match(78)) {
const token = this.lookahead().type;
isGroupedType = token !== 17 && token !== 14;
} else {
isGroupedType = true;
}
}
if (isGroupedType) {
this.state.noAnonFunctionType = false;
type = this.flowParseType();
this.state.noAnonFunctionType = oldNoAnonFunctionType;
if (this.state.noAnonFunctionType || !(this.match(12) || this.match(11) && this.lookahead().type === 19)) {
this.expect(11);
return type;
} else {
this.eat(12);
}
}
if (type) {
tmp = this.flowParseFunctionTypeParams([this.reinterpretTypeAsFunctionTypeParam(type)]);
} else {
tmp = this.flowParseFunctionTypeParams();
}
node.params = tmp.params;
node.rest = tmp.rest;
node.this = tmp._this;
this.expect(11);
this.expect(19);
node.returnType = this.flowParseType();
node.typeParameters = null;
return this.finishNode(node, "FunctionTypeAnnotation");
}
case 134:
return this.parseLiteral(this.state.value, "StringLiteralTypeAnnotation");
case 85:
case 86:
node.value = this.match(85);
this.next();
return this.finishNode(node, "BooleanLiteralTypeAnnotation");
case 53:
if (this.state.value === "-") {
this.next();
if (this.match(135)) {
return this.parseLiteralAtNode(-this.state.value, "NumberLiteralTypeAnnotation", node);
}
if (this.match(136)) {
return this.parseLiteralAtNode(-this.state.value, "BigIntLiteralTypeAnnotation", node);
}
throw this.raise(FlowErrors.UnexpectedSubtractionOperand, this.state.startLoc);
}
this.unexpected();
return;
case 135:
return this.parseLiteral(this.state.value, "NumberLiteralTypeAnnotation");
case 136:
return this.parseLiteral(this.state.value, "BigIntLiteralTypeAnnotation");
case 88:
this.next();
return this.finishNode(node, "VoidTypeAnnotation");
case 84:
this.next();
return this.finishNode(node, "NullLiteralTypeAnnotation");
case 78:
this.next();
return this.finishNode(node, "ThisTypeAnnotation");
case 55:
this.next();
return this.finishNode(node, "ExistsTypeAnnotation");
case 87:
return this.flowParseTypeofType();
default:
if (tokenIsKeyword(this.state.type)) {
const label = tokenLabelName(this.state.type);
this.next();
return super.createIdentifier(node, label);
} else if (tokenIsIdentifier(this.state.type)) {
if (this.isContextual(129)) {
return this.flowParseInterfaceType();
}
return this.flowIdentToTypeAnnotation(startLoc, node, this.parseIdentifier());
}
}
this.unexpected();
}
flowParsePostfixType() {
const startLoc = this.state.startLoc;
let type = this.flowParsePrimaryType();
let seenOptionalIndexedAccess = false;
while ((this.match(0) || this.match(18)) && !this.canInsertSemicolon()) {
const node = this.startNodeAt(startLoc);
const optional = this.eat(18);
seenOptionalIndexedAccess = seenOptionalIndexedAccess || optional;
this.expect(0);
if (!optional && this.match(3)) {
node.elementType = type;
this.next();
type = this.finishNode(node, "ArrayTypeAnnotation");
} else {
node.objectType = type;
node.indexType = this.flowParseType();
this.expect(3);
if (seenOptionalIndexedAccess) {
node.optional = optional;
type = this.finishNode(node, "OptionalIndexedAccessType");
} else {
type = this.finishNode(node, "IndexedAccessType");
}
}
}
return type;
}
flowParsePrefixType() {
const node = this.startNode();
if (this.eat(17)) {
node.typeAnnotation = this.flowParsePrefixType();
return this.finishNode(node, "NullableTypeAnnotation");
} else {
return this.flowParsePostfixType();
}
}
flowParseAnonFunctionWithoutParens() {
const param = this.flowParsePrefixType();
if (!this.state.noAnonFunctionType && this.eat(19)) {
const node = this.startNodeAt(param.loc.start);
node.params = [this.reinterpretTypeAsFunctionTypeParam(param)];
node.rest = null;
node.this = null;
node.returnType = this.flowParseType();
node.typeParameters = null;
return this.finishNode(node, "FunctionTypeAnnotation");
}
return param;
}
flowParseIntersectionType() {
const node = this.startNode();
this.eat(45);
const type = this.flowParseAnonFunctionWithoutParens();
node.types = [type];
while (this.eat(45)) {
node.types.push(this.flowParseAnonFunctionWithoutParens());
}
return node.types.length === 1 ? type : this.finishNode(node, "IntersectionTypeAnnotation");
}
flowParseUnionType() {
const node = this.startNode();
this.eat(43);
const type = this.flowParseIntersectionType();
node.types = [type];
while (this.eat(43)) {
node.types.push(this.flowParseIntersectionType());
}
return node.types.length === 1 ? type : this.finishNode(node, "UnionTypeAnnotation");
}
flowParseType() {
const oldInType = this.state.inType;
this.state.inType = true;
const type = this.flowParseUnionType();
this.state.inType = oldInType;
return type;
}
flowParseTypeOrImplicitInstantiation() {
if (this.state.type === 132 && this.state.value === "_") {
const startLoc = this.state.startLoc;
const node = this.parseIdentifier();
return this.flowParseGenericType(startLoc, node);
} else {
return this.flowParseType();
}
}
flowParseTypeAnnotation() {
const node = this.startNode();
node.typeAnnotation = this.flowParseTypeInitialiser();
return this.finishNode(node, "TypeAnnotation");
}
flowParseTypeAnnotatableIdentifier(allowPrimitiveOverride) {
const ident = allowPrimitiveOverride ? this.parseIdentifier() : this.flowParseRestrictedIdentifier();
if (this.match(14)) {
ident.typeAnnotation = this.flowParseTypeAnnotation();
this.resetEndLocation(ident);
}
return ident;
}
typeCastToParameter(node) {
node.expression.typeAnnotation = node.typeAnnotation;
this.resetEndLocation(node.expression, node.typeAnnotation.loc.end);
return node.expression;
}
flowParseVariance() {
let variance = null;
if (this.match(53)) {
variance = this.startNode();
if (this.state.value === "+") {
variance.kind = "plus";
} else {
variance.kind = "minus";
}
this.next();
return this.finishNode(variance, "Variance");
}
return variance;
}
parseFunctionBody(node, allowExpressionBody, isMethod = false) {
if (allowExpressionBody) {
this.forwardNoArrowParamsConversionAt(node, () => super.parseFunctionBody(node, true, isMethod));
return;
}
super.parseFunctionBody(node, false, isMethod);
}
parseFunctionBodyAndFinish(node, type, isMethod = false) {
if (this.match(14)) {
const typeNode = this.startNode();
[typeNode.typeAnnotation, node.predicate] = this.flowParseTypeAndPredicateInitialiser();
node.returnType = typeNode.typeAnnotation ? this.finishNode(typeNode, "TypeAnnotation") : null;
}
return super.parseFunctionBodyAndFinish(node, type, isMethod);
}
parseStatementLike(flags) {
if (this.state.strict && this.isContextual(129)) {
const lookahead = this.lookahead();
if (tokenIsKeywordOrIdentifier(lookahead.type)) {
const node = this.startNode();
this.next();
return this.flowParseInterface(node);
}
} else if (this.isContextual(126)) {
const node = this.startNode();
this.next();
return this.flowParseEnumDeclaration(node);
}
const stmt = super.parseStatementLike(flags);
if (this.flowPragma === undefined && !this.isValidDirective(stmt)) {
this.flowPragma = null;
}
return stmt;
}
parseExpressionStatement(node, expr, decorators) {
if (expr.type === "Identifier") {
if (expr.name === "declare") {
if (this.match(80) || tokenIsIdentifier(this.state.type) || this.match(68) || this.match(74) || this.match(82)) {
return this.flowParseDeclare(node);
}
} else if (tokenIsIdentifier(this.state.type)) {
if (expr.name === "interface") {
return this.flowParseInterface(node);
} else if (expr.name === "type") {
return this.flowParseTypeAlias(node);
} else if (expr.name === "opaque") {
return this.flowParseOpaqueType(node, false);
}
}
}
return super.parseExpressionStatement(node, expr, decorators);
}
shouldParseExportDeclaration() {
const {
type
} = this.state;
if (type === 126 || tokenIsFlowInterfaceOrTypeOrOpaque(type)) {
return !this.state.containsEsc;
}
return super.shouldParseExportDeclaration();
}
isExportDefaultSpecifier() {
const {
type
} = this.state;
if (type === 126 || tokenIsFlowInterfaceOrTypeOrOpaque(type)) {
return this.state.containsEsc;
}
return super.isExportDefaultSpecifier();
}
parseExportDefaultExpression() {
if (this.isContextual(126)) {
const node = this.startNode();
this.next();
return this.flowParseEnumDeclaration(node);
}
return super.parseExportDefaultExpression();
}
parseConditional(expr, startLoc, refExpressionErrors) {
if (!this.match(17)) return expr;
if (this.state.maybeInArrowParameters) {
const nextCh = this.lookaheadCharCode();
if (nextCh === 44 || nextCh === 61 || nextCh === 58 || nextCh === 41) {
this.setOptionalParametersError(refExpressionErrors);
return expr;
}
}
this.expect(17);
const state = this.state.clone();
const originalNoArrowAt = this.state.noArrowAt;
const node = this.startNodeAt(startLoc);
let {
consequent,
failed
} = this.tryParseConditionalConsequent();
let [valid, invalid] = this.getArrowLikeExpressions(consequent);
if (failed || invalid.length > 0) {
const noArrowAt = [...originalNoArrowAt];
if (invalid.length > 0) {
this.state = state;
this.state.noArrowAt = noArrowAt;
for (let i = 0; i < invalid.length; i++) {
noArrowAt.push(invalid[i].start);
}
({
consequent,
failed
} = this.tryParseConditionalConsequent());
[valid, invalid] = this.getArrowLikeExpressions(consequent);
}
if (failed && valid.length > 1) {
this.raise(FlowErrors.AmbiguousConditionalArrow, state.startLoc);
}
if (failed && valid.length === 1) {
this.state = state;
noArrowAt.push(valid[0].start);
this.state.noArrowAt = noArrowAt;
({
consequent,
failed
} = this.tryParseConditionalConsequent());
}
}
this.getArrowLikeExpressions(consequent, true);
this.state.noArrowAt = originalNoArrowAt;
this.expect(14);
node.test = expr;
node.consequent = consequent;
node.alternate = this.forwardNoArrowParamsConversionAt(node, () => this.parseMaybeAssign(undefined, undefined));
return this.finishNode(node, "ConditionalExpression");
}
tryParseConditionalConsequent() {
this.state.noArrowParamsConversionAt.push(this.state.start);
const consequent = this.parseMaybeAssignAllowIn();
const failed = !this.match(14);
this.state.noArrowParamsConversionAt.pop();
return {
consequent,
failed
};
}
getArrowLikeExpressions(node, disallowInvalid) {
const stack = [node];
const arrows = [];
while (stack.length !== 0) {
const node = stack.pop();
if (node.type === "ArrowFunctionExpression" && node.body.type !== "BlockStatement") {
if (node.typeParameters || !node.returnType) {
this.finishArrowValidation(node);
} else {
arrows.push(node);
}
stack.push(node.body);
} else if (node.type === "ConditionalExpression") {
stack.push(node.consequent);
stack.push(node.alternate);
}
}
if (disallowInvalid) {
arrows.forEach(node => this.finishArrowValidation(node));
return [arrows, []];
}
return partition(arrows, node => node.params.every(param => this.isAssignable(param, true)));
}
finishArrowValidation(node) {
var _node$extra;
this.toAssignableList(node.params, (_node$extra = node.extra) == null ? void 0 : _node$extra.trailingCommaLoc, false);
this.scope.enter(2 | 4);
super.checkParams(node, false, true);
this.scope.exit();
}
forwardNoArrowParamsConversionAt(node, parse) {
let result;
if (this.state.noArrowParamsConversionAt.includes(this.offsetToSourcePos(node.start))) {
this.state.noArrowParamsConversionAt.push(this.state.start);
result = parse();
this.state.noArrowParamsConversionAt.pop();
} else {
result = parse();
}
return result;
}
parseParenItem(node, startLoc) {
const newNode = super.parseParenItem(node, startLoc);
if (this.eat(17)) {
newNode.optional = true;
this.resetEndLocation(node);
}
if (this.match(14)) {
const typeCastNode = this.startNodeAt(startLoc);
typeCastNode.expression = newNode;
typeCastNode.typeAnnotation = this.flowParseTypeAnnotation();
return this.finishNode(typeCastNode, "TypeCastExpression");
}
return newNode;
}
assertModuleNodeAllowed(node) {
if (node.type === "ImportDeclaration" && (node.importKind === "type" || node.importKind === "typeof") || node.type === "ExportNamedDeclaration" && node.exportKind === "type" || node.type === "ExportAllDeclaration" && node.exportKind === "type") {
return;
}
super.assertModuleNodeAllowed(node);
}
parseExportDeclaration(node) {
if (this.isContextual(130)) {
node.exportKind = "type";
const declarationNode = this.startNode();
this.next();
if (this.match(5)) {
node.specifiers = this.parseExportSpecifiers(true);
super.parseExportFrom(node);
return null;
} else {
return this.flowParseTypeAlias(declarationNode);
}
} else if (this.isContextual(131)) {
node.exportKind = "type";
const declarationNode = this.startNode();
this.next();
return this.flowParseOpaqueType(declarationNode, false);
} else if (this.isContextual(129)) {
node.exportKind = "type";
const declarationNode = this.startNode();
this.next();
return this.flowParseInterface(declarationNode);
} else if (this.isContextual(126)) {
node.exportKind = "value";
const declarationNode = this.startNode();
this.next();
return this.flowParseEnumDeclaration(declarationNode);
} else {
return super.parseExportDeclaration(node);
}
}
eatExportStar(node) {
if (super.eatExportStar(node)) return true;
if (this.isContextual(130) && this.lookahead().type === 55) {
node.exportKind = "type";
this.next();
this.next();
return true;
}
return false;
}
maybeParseExportNamespaceSpecifier(node) {
const {
startLoc
} = this.state;
const hasNamespace = super.maybeParseExportNamespaceSpecifier(node);
if (hasNamespace && node.exportKind === "type") {
this.unexpected(startLoc);
}
return hasNamespace;
}
parseClassId(node, isStatement, optionalId) {
super.parseClassId(node, isStatement, optionalId);
if (this.match(47)) {
node.typeParameters = this.flowParseTypeParameterDeclaration();
}
}
parseClassMember(classBody, member, state) {
const {
startLoc
} = this.state;
if (this.isContextual(125)) {
if (super.parseClassMemberFromModifier(classBody, member)) {
return;
}
member.declare = true;
}
super.parseClassMember(classBody, member, state);
if (member.declare) {
if (member.type !== "ClassProperty" && member.type !== "ClassPrivateProperty" && member.type !== "PropertyDefinition") {
this.raise(FlowErrors.DeclareClassElement, startLoc);
} else if (member.value) {
this.raise(FlowErrors.DeclareClassFieldInitializer, member.value);
}
}
}
isIterator(word) {
return word === "iterator" || word === "asyncIterator";
}
readIterator() {
const word = super.readWord1();
const fullWord = "@@" + word;
if (!this.isIterator(word) || !this.state.inType) {
this.raise(Errors.InvalidIdentifier, this.state.curPosition(), {
identifierName: fullWord
});
}
this.finishToken(132, fullWord);
}
getTokenFromCode(code) {
const next = this.input.charCodeAt(this.state.pos + 1);
if (code === 123 && next === 124) {
this.finishOp(6, 2);
} else if (this.state.inType && (code === 62 || code === 60)) {
this.finishOp(code === 62 ? 48 : 47, 1);
} else if (this.state.inType && code === 63) {
if (next === 46) {
this.finishOp(18, 2);
} else {
this.finishOp(17, 1);
}
} else if (isIteratorStart(code, next, this.input.charCodeAt(this.state.pos + 2))) {
this.state.pos += 2;
this.readIterator();
} else {
super.getTokenFromCode(code);
}
}
isAssignable(node, isBinding) {
if (node.type === "TypeCastExpression") {
return this.isAssignable(node.expression, isBinding);
} else {
return super.isAssignable(node, isBinding);
}
}
toAssignable(node, isLHS = false) {
if (!isLHS && node.type === "AssignmentExpression" && node.left.type === "TypeCastExpression") {
node.left = this.typeCastToParameter(node.left);
}
super.toAssignable(node, isLHS);
}
toAssignableList(exprList, trailingCommaLoc, isLHS) {
for (let i = 0; i < exprList.length; i++) {
const expr = exprList[i];
if ((expr == null ? void 0 : expr.type) === "TypeCastExpression") {
exprList[i] = this.typeCastToParameter(expr);
}
}
super.toAssignableList(exprList, trailingCommaLoc, isLHS);
}
toReferencedList(exprList, isParenthesizedExpr) {
for (let i = 0; i < exprList.length; i++) {
var _expr$extra;
const expr = exprList[i];
if (expr && expr.type === "TypeCastExpression" && !((_expr$extra = expr.extra) != null && _expr$extra.parenthesized) && (exprList.length > 1 || !isParenthesizedExpr)) {
this.raise(FlowErrors.TypeCastInPattern, expr.typeAnnotation);
}
}
return exprList;
}
parseArrayLike(close, canBePattern, isTuple, refExpressionErrors) {
const node = super.parseArrayLike(close, canBePattern, isTuple, refExpressionErrors);
if (canBePattern && !this.state.maybeInArrowParameters) {
this.toReferencedList(node.elements);
}
return node;
}
isValidLVal(type, isParenthesized, binding) {
return type === "TypeCastExpression" || super.isValidLVal(type, isParenthesized, binding);
}
parseClassProperty(node) {
if (this.match(14)) {
node.typeAnnotation = this.flowParseTypeAnnotation();
}
return super.parseClassProperty(node);
}
parseClassPrivateProperty(node) {
if (this.match(14)) {
node.typeAnnotation = this.flowParseTypeAnnotation();
}
return super.parseClassPrivateProperty(node);
}
isClassMethod() {
return this.match(47) || super.isClassMethod();
}
isClassProperty() {
return this.match(14) || super.isClassProperty();
}
isNonstaticConstructor(method) {
return !this.match(14) && super.isNonstaticConstructor(method);
}
pushClassMethod(classBody, method, isGenerator, isAsync, isConstructor, allowsDirectSuper) {
if (method.variance) {
this.unexpected(method.variance.loc.start);
}
delete method.variance;
if (this.match(47)) {
method.typeParameters = this.flowParseTypeParameterDeclaration();
}
super.pushClassMethod(classBody, method, isGenerator, isAsync, isConstructor, allowsDirectSuper);
if (method.params && isConstructor) {
const params = method.params;
if (params.length > 0 && this.isThisParam(params[0])) {
this.raise(FlowErrors.ThisParamBannedInConstructor, method);
}
} else if (method.type === "MethodDefinition" && isConstructor && method.value.params) {
const params = method.value.params;
if (params.length > 0 && this.isThisParam(params[0])) {
this.raise(FlowErrors.ThisParamBannedInConstructor, method);
}
}
}
pushClassPrivateMethod(classBody, method, isGenerator, isAsync) {
if (method.variance) {
this.unexpected(method.variance.loc.start);
}
delete method.variance;
if (this.match(47)) {
method.typeParameters = this.flowParseTypeParameterDeclaration();
}
super.pushClassPrivateMethod(classBody, method, isGenerator, isAsync);
}
parseClassSuper(node) {
super.parseClassSuper(node);
if (node.superClass && (this.match(47) || this.match(51))) {
{
node.superTypeParameters = this.flowParseTypeParameterInstantiationInExpression();
}
}
if (this.isContextual(113)) {
this.next();
const implemented = node.implements = [];
do {
const node = this.startNode();
node.id = this.flowParseRestrictedIdentifier(true);
if (this.match(47)) {
node.typeParameters = this.flowParseTypeParameterInstantiation();
} else {
node.typeParameters = null;
}
implemented.push(this.finishNode(node, "ClassImplements"));
} while (this.eat(12));
}
}
checkGetterSetterParams(method) {
super.checkGetterSetterParams(method);
const params = this.getObjectOrClassMethodParams(method);
if (params.length > 0) {
const param = params[0];
if (this.isThisParam(param) && method.kind === "get") {
this.raise(FlowErrors.GetterMayNotHaveThisParam, param);
} else if (this.isThisParam(param)) {
this.raise(FlowErrors.SetterMayNotHaveThisParam, param);
}
}
}
parsePropertyNamePrefixOperator(node) {
node.variance = this.flowParseVariance();
}
parseObjPropValue(prop, startLoc, isGenerator, isAsync, isPattern, isAccessor, refExpressionErrors) {
if (prop.variance) {
this.unexpected(prop.variance.loc.start);
}
delete prop.variance;
let typeParameters;
if (this.match(47) && !isAccessor) {
typeParameters = this.flowParseTypeParameterDeclaration();
if (!this.match(10)) this.unexpected();
}
const result = super.parseObjPropValue(prop, startLoc, isGenerator, isAsync, isPattern, isAccessor, refExpressionErrors);
if (typeParameters) {
(result.value || result).typeParameters = typeParameters;
}
return result;
}
parseFunctionParamType(param) {
if (this.eat(17)) {
if (param.type !== "Identifier") {
this.raise(FlowErrors.PatternIsOptional, param);
}
if (this.isThisParam(param)) {
this.raise(FlowErrors.ThisParamMayNotBeOptional, param);
}
param.optional = true;
}
if (this.match(14)) {
param.typeAnnotation = this.flowParseTypeAnnotation();
} else if (this.isThisParam(param)) {
this.raise(FlowErrors.ThisParamAnnotationRequired, param);
}
if (this.match(29) && this.isThisParam(param)) {
this.raise(FlowErrors.ThisParamNoDefault, param);
}
this.resetEndLocation(param);
return param;
}
parseMaybeDefault(startLoc, left) {
const node = super.parseMaybeDefault(startLoc, left);
if (node.type === "AssignmentPattern" && node.typeAnnotation && node.right.start < node.typeAnnotation.start) {
this.raise(FlowErrors.TypeBeforeInitializer, node.typeAnnotation);
}
return node;
}
checkImportReflection(node) {
super.checkImportReflection(node);
if (node.module && node.importKind !== "value") {
this.raise(FlowErrors.ImportReflectionHasImportType, node.specifiers[0].loc.start);
}
}
parseImportSpecifierLocal(node, specifier, type) {
specifier.local = hasTypeImportKind(node) ? this.flowParseRestrictedIdentifier(true, true) : this.parseIdentifier();
node.specifiers.push(this.finishImportSpecifier(specifier, type));
}
isPotentialImportPhase(isExport) {
if (super.isPotentialImportPhase(isExport)) return true;
if (this.isContextual(130)) {
if (!isExport) return true;
const ch = this.lookaheadCharCode();
return ch === 123 || ch === 42;
}
return !isExport && this.isContextual(87);
}
applyImportPhase(node, isExport, phase, loc) {
super.applyImportPhase(node, isExport, phase, loc);
if (isExport) {
if (!phase && this.match(65)) {
return;
}
node.exportKind = phase === "type" ? phase : "value";
} else {
if (phase === "type" && this.match(55)) this.unexpected();
node.importKind = phase === "type" || phase === "typeof" ? phase : "value";
}
}
parseImportSpecifier(specifier, importedIsString, isInTypeOnlyImport, isMaybeTypeOnly, bindingType) {
const firstIdent = specifier.imported;
let specifierTypeKind = null;
if (firstIdent.type === "Identifier") {
if (firstIdent.name === "type") {
specifierTypeKind = "type";
} else if (firstIdent.name === "typeof") {
specifierTypeKind = "typeof";
}
}
let isBinding = false;
if (this.isContextual(93) && !this.isLookaheadContextual("as")) {
const as_ident = this.parseIdentifier(true);
if (specifierTypeKind !== null && !tokenIsKeywordOrIdentifier(this.state.type)) {
specifier.imported = as_ident;
specifier.importKind = specifierTypeKind;
specifier.local = cloneIdentifier(as_ident);
} else {
specifier.imported = firstIdent;
specifier.importKind = null;
specifier.local = this.parseIdentifier();
}
} else {
if (specifierTypeKind !== null && tokenIsKeywordOrIdentifier(this.state.type)) {
specifier.imported = this.parseIdentifier(true);
specifier.importKind = specifierTypeKind;
} else {
if (importedIsString) {
throw this.raise(Errors.ImportBindingIsString, specifier, {
importName: firstIdent.value
});
}
specifier.imported = firstIdent;
specifier.importKind = null;
}
if (this.eatContextual(93)) {
specifier.local = this.parseIdentifier();
} else {
isBinding = true;
specifier.local = cloneIdentifier(specifier.imported);
}
}
const specifierIsTypeImport = hasTypeImportKind(specifier);
if (isInTypeOnlyImport && specifierIsTypeImport) {
this.raise(FlowErrors.ImportTypeShorthandOnlyInPureImport, specifier);
}
if (isInTypeOnlyImport || specifierIsTypeImport) {
this.checkReservedType(specifier.local.name, specifier.local.loc.start, true);
}
if (isBinding && !isInTypeOnlyImport && !specifierIsTypeImport) {
this.checkReservedWord(specifier.local.name, specifier.loc.start, true, true);
}
return this.finishImportSpecifier(specifier, "ImportSpecifier");
}
parseBindingAtom() {
switch (this.state.type) {
case 78:
return this.parseIdentifier(true);
default:
return super.parseBindingAtom();
}
}
parseFunctionParams(node, isConstructor) {
const kind = node.kind;
if (kind !== "get" && kind !== "set" && this.match(47)) {
node.typeParameters = this.flowParseTypeParameterDeclaration();
}
super.parseFunctionParams(node, isConstructor);
}
parseVarId(decl, kind) {
super.parseVarId(decl, kind);
if (this.match(14)) {
decl.id.typeAnnotation = this.flowParseTypeAnnotation();
this.resetEndLocation(decl.id);
}
}
parseAsyncArrowFromCallExpression(node, call) {
if (this.match(14)) {
const oldNoAnonFunctionType = this.state.noAnonFunctionType;
this.state.noAnonFunctionType = true;
node.returnType = this.flowParseTypeAnnotation();
this.state.noAnonFunctionType = oldNoAnonFunctionType;
}
return super.parseAsyncArrowFromCallExpression(node, call);
}
shouldParseAsyncArrow() {
return this.match(14) || super.shouldParseAsyncArrow();
}
parseMaybeAssign(refExpressionErrors, afterLeftParse) {
var _jsx;
let state = null;
let jsx;
if (this.hasPlugin("jsx") && (this.match(143) || this.match(47))) {
state = this.state.clone();
jsx = this.tryParse(() => super.parseMaybeAssign(refExpressionErrors, afterLeftParse), state);
if (!jsx.error) return jsx.node;
const {
context
} = this.state;
const currentContext = context[context.length - 1];
if (currentContext === types.j_oTag || currentContext === types.j_expr) {
context.pop();
}
}
if ((_jsx = jsx) != null && _jsx.error || this.match(47)) {
var _jsx2, _jsx3;
state = state || this.state.clone();
let typeParameters;
const arrow = this.tryParse(abort => {
var _arrowExpression$extr;
typeParameters = this.flowParseTypeParameterDeclaration();
const arrowExpression = this.forwardNoArrowParamsConversionAt(typeParameters, () => {
const result = super.parseMaybeAssign(refExpressionErrors, afterLeftParse);
this.resetStartLocationFromNode(result, typeParameters);
return result;
});
if ((_arrowExpression$extr = arrowExpression.extra) != null && _arrowExpression$extr.parenthesized) abort();
const expr = this.maybeUnwrapTypeCastExpression(arrowExpression);
if (expr.type !== "ArrowFunctionExpression") abort();
expr.typeParameters = typeParameters;
this.resetStartLocationFromNode(expr, typeParameters);
return arrowExpression;
}, state);
let arrowExpression = null;
if (arrow.node && this.maybeUnwrapTypeCastExpression(arrow.node).type === "ArrowFunctionExpression") {
if (!arrow.error && !arrow.aborted) {
if (arrow.node.async) {
this.raise(FlowErrors.UnexpectedTypeParameterBeforeAsyncArrowFunction, typeParameters);
}
return arrow.node;
}
arrowExpression = arrow.node;
}
if ((_jsx2 = jsx) != null && _jsx2.node) {
this.state = jsx.failState;
return jsx.node;
}
if (arrowExpression) {
this.state = arrow.failState;
return arrowExpression;
}
if ((_jsx3 = jsx) != null && _jsx3.thrown) throw jsx.error;
if (arrow.thrown) throw arrow.error;
throw this.raise(FlowErrors.UnexpectedTokenAfterTypeParameter, typeParameters);
}
return super.parseMaybeAssign(refExpressionErrors, afterLeftParse);
}
parseArrow(node) {
if (this.match(14)) {
const result = this.tryParse(() => {
const oldNoAnonFunctionType = this.state.noAnonFunctionType;
this.state.noAnonFunctionType = true;
const typeNode = this.startNode();
[typeNode.typeAnnotation, node.predicate] = this.flowParseTypeAndPredicateInitialiser();
this.state.noAnonFunctionType = oldNoAnonFunctionType;
if (this.canInsertSemicolon()) this.unexpected();
if (!this.match(19)) this.unexpected();
return typeNode;
});
if (result.thrown) return null;
if (result.error) this.state = result.failState;
node.returnType = result.node.typeAnnotation ? this.finishNode(result.node, "TypeAnnotation") : null;
}
return super.parseArrow(node);
}
shouldParseArrow(params) {
return this.match(14) || super.shouldParseArrow(params);
}
setArrowFunctionParameters(node, params) {
if (this.state.noArrowParamsConversionAt.includes(this.offsetToSourcePos(node.start))) {
node.params = params;
} else {
super.setArrowFunctionParameters(node, params);
}
}
checkParams(node, allowDuplicates, isArrowFunction, strictModeChanged = true) {
if (isArrowFunction && this.state.noArrowParamsConversionAt.includes(this.offsetToSourcePos(node.start))) {
return;
}
for (let i = 0; i < node.params.length; i++) {
if (this.isThisParam(node.params[i]) && i > 0) {
this.raise(FlowErrors.ThisParamMustBeFirst, node.params[i]);
}
}
super.checkParams(node, allowDuplicates, isArrowFunction, strictModeChanged);
}
parseParenAndDistinguishExpression(canBeArrow) {
return super.parseParenAndDistinguishExpression(canBeArrow && !this.state.noArrowAt.includes(this.sourceToOffsetPos(this.state.start)));
}
parseSubscripts(base, startLoc, noCalls) {
if (base.type === "Identifier" && base.name === "async" && this.state.noArrowAt.includes(startLoc.index)) {
this.next();
const node = this.startNodeAt(startLoc);
node.callee = base;
node.arguments = super.parseCallExpressionArguments(11);
base = this.finishNode(node, "CallExpression");
} else if (base.type === "Identifier" && base.name === "async" && this.match(47)) {
const state = this.state.clone();
const arrow = this.tryParse(abort => this.parseAsyncArrowWithTypeParameters(startLoc) || abort(), state);
if (!arrow.error && !arrow.aborted) return arrow.node;
const result = this.tryParse(() => super.parseSubscripts(base, startLoc, noCalls), state);
if (result.node && !result.error) return result.node;
if (arrow.node) {
this.state = arrow.failState;
return arrow.node;
}
if (result.node) {
this.state = result.failState;
return result.node;
}
throw arrow.error || result.error;
}
return super.parseSubscripts(base, startLoc, noCalls);
}
parseSubscript(base, startLoc, noCalls, subscriptState) {
if (this.match(18) && this.isLookaheadToken_lt()) {
subscriptState.optionalChainMember = true;
if (noCalls) {
subscriptState.stop = true;
return base;
}
this.next();
const node = this.startNodeAt(startLoc);
node.callee = base;
node.typeArguments = this.flowParseTypeParameterInstantiationInExpression();
this.expect(10);
node.arguments = this.parseCallExpressionArguments(11);
node.optional = true;
return this.finishCallExpression(node, true);
} else if (!noCalls && this.shouldParseTypes() && (this.match(47) || this.match(51))) {
const node = this.startNodeAt(startLoc);
node.callee = base;
const result = this.tryParse(() => {
node.typeArguments = this.flowParseTypeParameterInstantiationCallOrNew();
this.expect(10);
node.arguments = super.parseCallExpressionArguments(11);
if (subscriptState.optionalChainMember) {
node.optional = false;
}
return this.finishCallExpression(node, subscriptState.optionalChainMember);
});
if (result.node) {
if (result.error) this.state = result.failState;
return result.node;
}
}
return super.parseSubscript(base, startLoc, noCalls, subscriptState);
}
parseNewCallee(node) {
super.parseNewCallee(node);
let targs = null;
if (this.shouldParseTypes() && this.match(47)) {
targs = this.tryParse(() => this.flowParseTypeParameterInstantiationCallOrNew()).node;
}
node.typeArguments = targs;
}
parseAsyncArrowWithTypeParameters(startLoc) {
const node = this.startNodeAt(startLoc);
this.parseFunctionParams(node, false);
if (!this.parseArrow(node)) return;
return super.parseArrowExpression(node, undefined, true);
}
readToken_mult_modulo(code) {
const next = this.input.charCodeAt(this.state.pos + 1);
if (code === 42 && next === 47 && this.state.hasFlowComment) {
this.state.hasFlowComment = false;
this.state.pos += 2;
this.nextToken();
return;
}
super.readToken_mult_modulo(code);
}
readToken_pipe_amp(code) {
const next = this.input.charCodeAt(this.state.pos + 1);
if (code === 124 && next === 125) {
this.finishOp(9, 2);
return;
}
super.readToken_pipe_amp(code);
}
parseTopLevel(file, program) {
const fileNode = super.parseTopLevel(file, program);
if (this.state.hasFlowComment) {
this.raise(FlowErrors.UnterminatedFlowComment, this.state.curPosition());
}
return fileNode;
}
skipBlockComment() {
if (this.hasPlugin("flowComments") && this.skipFlowComment()) {
if (this.state.hasFlowComment) {
throw this.raise(FlowErrors.NestedFlowComment, this.state.startLoc);
}
this.hasFlowCommentCompletion();
const commentSkip = this.skipFlowComment();
if (commentSkip) {
this.state.pos += commentSkip;
this.state.hasFlowComment = true;
}
return;
}
return super.skipBlockComment(this.state.hasFlowComment ? "*-/" : "*/");
}
skipFlowComment() {
const {
pos
} = this.state;
let shiftToFirstNonWhiteSpace = 2;
while ([32, 9].includes(this.input.charCodeAt(pos + shiftToFirstNonWhiteSpace))) {
shiftToFirstNonWhiteSpace++;
}
const ch2 = this.input.charCodeAt(shiftToFirstNonWhiteSpace + pos);
const ch3 = this.input.charCodeAt(shiftToFirstNonWhiteSpace + pos + 1);
if (ch2 === 58 && ch3 === 58) {
return shiftToFirstNonWhiteSpace + 2;
}
if (this.input.slice(shiftToFirstNonWhiteSpace + pos, shiftToFirstNonWhiteSpace + pos + 12) === "flow-include") {
return shiftToFirstNonWhiteSpace + 12;
}
if (ch2 === 58 && ch3 !== 58) {
return shiftToFirstNonWhiteSpace;
}
return false;
}
hasFlowCommentCompletion() {
const end = this.input.indexOf("*/", this.state.pos);
if (end === -1) {
throw this.raise(Errors.UnterminatedComment, this.state.curPosition());
}
}
flowEnumErrorBooleanMemberNotInitialized(loc, {
enumName,
memberName
}) {
this.raise(FlowErrors.EnumBooleanMemberNotInitialized, loc, {
memberName,
enumName
});
}
flowEnumErrorInvalidMemberInitializer(loc, enumContext) {
return this.raise(!enumContext.explicitType ? FlowErrors.EnumInvalidMemberInitializerUnknownType : enumContext.explicitType === "symbol" ? FlowErrors.EnumInvalidMemberInitializerSymbolType : FlowErrors.EnumInvalidMemberInitializerPrimaryType, loc, enumContext);
}
flowEnumErrorNumberMemberNotInitialized(loc, details) {
this.raise(FlowErrors.EnumNumberMemberNotInitialized, loc, details);
}
flowEnumErrorStringMemberInconsistentlyInitialized(node, details) {
this.raise(FlowErrors.EnumStringMemberInconsistentlyInitialized, node, details);
}
flowEnumMemberInit() {
const startLoc = this.state.startLoc;
const endOfInit = () => this.match(12) || this.match(8);
switch (this.state.type) {
case 135:
{
const literal = this.parseNumericLiteral(this.state.value);
if (endOfInit()) {
return {
type: "number",
loc: literal.loc.start,
value: literal
};
}
return {
type: "invalid",
loc: startLoc
};
}
case 134:
{
const literal = this.parseStringLiteral(this.state.value);
if (endOfInit()) {
return {
type: "string",
loc: literal.loc.start,
value: literal
};
}
return {
type: "invalid",
loc: startLoc
};
}
case 85:
case 86:
{
const literal = this.parseBooleanLiteral(this.match(85));
if (endOfInit()) {
return {
type: "boolean",
loc: literal.loc.start,
value: literal
};
}
return {
type: "invalid",
loc: startLoc
};
}
default:
return {
type: "invalid",
loc: startLoc
};
}
}
flowEnumMemberRaw() {
const loc = this.state.startLoc;
const id = this.parseIdentifier(true);
const init = this.eat(29) ? this.flowEnumMemberInit() : {
type: "none",
loc
};
return {
id,
init
};
}
flowEnumCheckExplicitTypeMismatch(loc, context, expectedType) {
const {
explicitType
} = context;
if (explicitType === null) {
return;
}
if (explicitType !== expectedType) {
this.flowEnumErrorInvalidMemberInitializer(loc, context);
}
}
flowEnumMembers({
enumName,
explicitType
}) {
const seenNames = new Set();
const members = {
booleanMembers: [],
numberMembers: [],
stringMembers: [],
defaultedMembers: []
};
let hasUnknownMembers = false;
while (!this.match(8)) {
if (this.eat(21)) {
hasUnknownMembers = true;
break;
}
const memberNode = this.startNode();
const {
id,
init
} = this.flowEnumMemberRaw();
const memberName = id.name;
if (memberName === "") {
continue;
}
if (/^[a-z]/.test(memberName)) {
this.raise(FlowErrors.EnumInvalidMemberName, id, {
memberName,
suggestion: memberName[0].toUpperCase() + memberName.slice(1),
enumName
});
}
if (seenNames.has(memberName)) {
this.raise(FlowErrors.EnumDuplicateMemberName, id, {
memberName,
enumName
});
}
seenNames.add(memberName);
const context = {
enumName,
explicitType,
memberName
};
memberNode.id = id;
switch (init.type) {
case "boolean":
{
this.flowEnumCheckExplicitTypeMismatch(init.loc, context, "boolean");
memberNode.init = init.value;
members.booleanMembers.push(this.finishNode(memberNode, "EnumBooleanMember"));
break;
}
case "number":
{
this.flowEnumCheckExplicitTypeMismatch(init.loc, context, "number");
memberNode.init = init.value;
members.numberMembers.push(this.finishNode(memberNode, "EnumNumberMember"));
break;
}
case "string":
{
this.flowEnumCheckExplicitTypeMismatch(init.loc, context, "string");
memberNode.init = init.value;
members.stringMembers.push(this.finishNode(memberNode, "EnumStringMember"));
break;
}
case "invalid":
{
throw this.flowEnumErrorInvalidMemberInitializer(init.loc, context);
}
case "none":
{
switch (explicitType) {
case "boolean":
this.flowEnumErrorBooleanMemberNotInitialized(init.loc, context);
break;
case "number":
this.flowEnumErrorNumberMemberNotInitialized(init.loc, context);
break;
default:
members.defaultedMembers.push(this.finishNode(memberNode, "EnumDefaultedMember"));
}
}
}
if (!this.match(8)) {
this.expect(12);
}
}
return {
members,
hasUnknownMembers
};
}
flowEnumStringMembers(initializedMembers, defaultedMembers, {
enumName
}) {
if (initializedMembers.length === 0) {
return defaultedMembers;
} else if (defaultedMembers.length === 0) {
return initializedMembers;
} else if (defaultedMembers.length > initializedMembers.length) {
for (const member of initializedMembers) {
this.flowEnumErrorStringMemberInconsistentlyInitialized(member, {
enumName
});
}
return defaultedMembers;
} else {
for (const member of defaultedMembers) {
this.flowEnumErrorStringMemberInconsistentlyInitialized(member, {
enumName
});
}
return initializedMembers;
}
}
flowEnumParseExplicitType({
enumName
}) {
if (!this.eatContextual(102)) return null;
if (!tokenIsIdentifier(this.state.type)) {
throw this.raise(FlowErrors.EnumInvalidExplicitTypeUnknownSupplied, this.state.startLoc, {
enumName
});
}
const {
value
} = this.state;
this.next();
if (value !== "boolean" && value !== "number" && value !== "string" && value !== "symbol") {
this.raise(FlowErrors.EnumInvalidExplicitType, this.state.startLoc, {
enumName,
invalidEnumType: value
});
}
return value;
}
flowEnumBody(node, id) {
const enumName = id.name;
const nameLoc = id.loc.start;
const explicitType = this.flowEnumParseExplicitType({
enumName
});
this.expect(5);
const {
members,
hasUnknownMembers
} = this.flowEnumMembers({
enumName,
explicitType
});
node.hasUnknownMembers = hasUnknownMembers;
switch (explicitType) {
case "boolean":
node.explicitType = true;
node.members = members.booleanMembers;
this.expect(8);
return this.finishNode(node, "EnumBooleanBody");
case "number":
node.explicitType = true;
node.members = members.numberMembers;
this.expect(8);
return this.finishNode(node, "EnumNumberBody");
case "string":
node.explicitType = true;
node.members = this.flowEnumStringMembers(members.stringMembers, members.defaultedMembers, {
enumName
});
this.expect(8);
return this.finishNode(node, "EnumStringBody");
case "symbol":
node.members = members.defaultedMembers;
this.expect(8);
return this.finishNode(node, "EnumSymbolBody");
default:
{
const empty = () => {
node.members = [];
this.expect(8);
return this.finishNode(node, "EnumStringBody");
};
node.explicitType = false;
const boolsLen = members.booleanMembers.length;
const numsLen = members.numberMembers.length;
const strsLen = members.stringMembers.length;
const defaultedLen = members.defaultedMembers.length;
if (!boolsLen && !numsLen && !strsLen && !defaultedLen) {
return empty();
} else if (!boolsLen && !numsLen) {
node.members = this.flowEnumStringMembers(members.stringMembers, members.defaultedMembers, {
enumName
});
this.expect(8);
return this.finishNode(node, "EnumStringBody");
} else if (!numsLen && !strsLen && boolsLen >= defaultedLen) {
for (const member of members.defaultedMembers) {
this.flowEnumErrorBooleanMemberNotInitialized(member.loc.start, {
enumName,
memberName: member.id.name
});
}
node.members = members.booleanMembers;
this.expect(8);
return this.finishNode(node, "EnumBooleanBody");
} else if (!boolsLen && !strsLen && numsLen >= defaultedLen) {
for (const member of members.defaultedMembers) {
this.flowEnumErrorNumberMemberNotInitialized(member.loc.start, {
enumName,
memberName: member.id.name
});
}
node.members = members.numberMembers;
this.expect(8);
return this.finishNode(node, "EnumNumberBody");
} else {
this.raise(FlowErrors.EnumInconsistentMemberValues, nameLoc, {
enumName
});
return empty();
}
}
}
}
flowParseEnumDeclaration(node) {
const id = this.parseIdentifier();
node.id = id;
node.body = this.flowEnumBody(this.startNode(), id);
return this.finishNode(node, "EnumDeclaration");
}
jsxParseOpeningElementAfterName(node) {
if (this.shouldParseTypes()) {
if (this.match(47) || this.match(51)) {
node.typeArguments = this.flowParseTypeParameterInstantiationInExpression();
}
}
return super.jsxParseOpeningElementAfterName(node);
}
isLookaheadToken_lt() {
const next = this.nextTokenStart();
if (this.input.charCodeAt(next) === 60) {
const afterNext = this.input.charCodeAt(next + 1);
return afterNext !== 60 && afterNext !== 61;
}
return false;
}
reScan_lt_gt() {
const {
type
} = this.state;
if (type === 47) {
this.state.pos -= 1;
this.readToken_lt();
} else if (type === 48) {
this.state.pos -= 1;
this.readToken_gt();
}
}
reScan_lt() {
const {
type
} = this.state;
if (type === 51) {
this.state.pos -= 2;
this.finishOp(47, 1);
return 47;
}
return type;
}
maybeUnwrapTypeCastExpression(node) {
return node.type === "TypeCastExpression" ? node.expression : node;
}
};
const entities = {
__proto__: null,
quot: "\u0022",
amp: "&",
apos: "\u0027",
lt: "<",
gt: ">",
nbsp: "\u00A0",
iexcl: "\u00A1",
cent: "\u00A2",
pound: "\u00A3",
curren: "\u00A4",
yen: "\u00A5",
brvbar: "\u00A6",
sect: "\u00A7",
uml: "\u00A8",
copy: "\u00A9",
ordf: "\u00AA",
laquo: "\u00AB",
not: "\u00AC",
shy: "\u00AD",
reg: "\u00AE",
macr: "\u00AF",
deg: "\u00B0",
plusmn: "\u00B1",
sup2: "\u00B2",
sup3: "\u00B3",
acute: "\u00B4",
micro: "\u00B5",
para: "\u00B6",
middot: "\u00B7",
cedil: "\u00B8",
sup1: "\u00B9",
ordm: "\u00BA",
raquo: "\u00BB",
frac14: "\u00BC",
frac12: "\u00BD",
frac34: "\u00BE",
iquest: "\u00BF",
Agrave: "\u00C0",
Aacute: "\u00C1",
Acirc: "\u00C2",
Atilde: "\u00C3",
Auml: "\u00C4",
Aring: "\u00C5",
AElig: "\u00C6",
Ccedil: "\u00C7",
Egrave: "\u00C8",
Eacute: "\u00C9",
Ecirc: "\u00CA",
Euml: "\u00CB",
Igrave: "\u00CC",
Iacute: "\u00CD",
Icirc: "\u00CE",
Iuml: "\u00CF",
ETH: "\u00D0",
Ntilde: "\u00D1",
Ograve: "\u00D2",
Oacute: "\u00D3",
Ocirc: "\u00D4",
Otilde: "\u00D5",
Ouml: "\u00D6",
times: "\u00D7",
Oslash: "\u00D8",
Ugrave: "\u00D9",
Uacute: "\u00DA",
Ucirc: "\u00DB",
Uuml: "\u00DC",
Yacute: "\u00DD",
THORN: "\u00DE",
szlig: "\u00DF",
agrave: "\u00E0",
aacute: "\u00E1",
acirc: "\u00E2",
atilde: "\u00E3",
auml: "\u00E4",
aring: "\u00E5",
aelig: "\u00E6",
ccedil: "\u00E7",
egrave: "\u00E8",
eacute: "\u00E9",
ecirc: "\u00EA",
euml: "\u00EB",
igrave: "\u00EC",
iacute: "\u00ED",
icirc: "\u00EE",
iuml: "\u00EF",
eth: "\u00F0",
ntilde: "\u00F1",
ograve: "\u00F2",
oacute: "\u00F3",
ocirc: "\u00F4",
otilde: "\u00F5",
ouml: "\u00F6",
divide: "\u00F7",
oslash: "\u00F8",
ugrave: "\u00F9",
uacute: "\u00FA",
ucirc: "\u00FB",
uuml: "\u00FC",
yacute: "\u00FD",
thorn: "\u00FE",
yuml: "\u00FF",
OElig: "\u0152",
oelig: "\u0153",
Scaron: "\u0160",
scaron: "\u0161",
Yuml: "\u0178",
fnof: "\u0192",
circ: "\u02C6",
tilde: "\u02DC",
Alpha: "\u0391",
Beta: "\u0392",
Gamma: "\u0393",
Delta: "\u0394",
Epsilon: "\u0395",
Zeta: "\u0396",
Eta: "\u0397",
Theta: "\u0398",
Iota: "\u0399",
Kappa: "\u039A",
Lambda: "\u039B",
Mu: "\u039C",
Nu: "\u039D",
Xi: "\u039E",
Omicron: "\u039F",
Pi: "\u03A0",
Rho: "\u03A1",
Sigma: "\u03A3",
Tau: "\u03A4",
Upsilon: "\u03A5",
Phi: "\u03A6",
Chi: "\u03A7",
Psi: "\u03A8",
Omega: "\u03A9",
alpha: "\u03B1",
beta: "\u03B2",
gamma: "\u03B3",
delta: "\u03B4",
epsilon: "\u03B5",
zeta: "\u03B6",
eta: "\u03B7",
theta: "\u03B8",
iota: "\u03B9",
kappa: "\u03BA",
lambda: "\u03BB",
mu: "\u03BC",
nu: "\u03BD",
xi: "\u03BE",
omicron: "\u03BF",
pi: "\u03C0",
rho: "\u03C1",
sigmaf: "\u03C2",
sigma: "\u03C3",
tau: "\u03C4",
upsilon: "\u03C5",
phi: "\u03C6",
chi: "\u03C7",
psi: "\u03C8",
omega: "\u03C9",
thetasym: "\u03D1",
upsih: "\u03D2",
piv: "\u03D6",
ensp: "\u2002",
emsp: "\u2003",
thinsp: "\u2009",
zwnj: "\u200C",
zwj: "\u200D",
lrm: "\u200E",
rlm: "\u200F",
ndash: "\u2013",
mdash: "\u2014",
lsquo: "\u2018",
rsquo: "\u2019",
sbquo: "\u201A",
ldquo: "\u201C",
rdquo: "\u201D",
bdquo: "\u201E",
dagger: "\u2020",
Dagger: "\u2021",
bull: "\u2022",
hellip: "\u2026",
permil: "\u2030",
prime: "\u2032",
Prime: "\u2033",
lsaquo: "\u2039",
rsaquo: "\u203A",
oline: "\u203E",
frasl: "\u2044",
euro: "\u20AC",
image: "\u2111",
weierp: "\u2118",
real: "\u211C",
trade: "\u2122",
alefsym: "\u2135",
larr: "\u2190",
uarr: "\u2191",
rarr: "\u2192",
darr: "\u2193",
harr: "\u2194",
crarr: "\u21B5",
lArr: "\u21D0",
uArr: "\u21D1",
rArr: "\u21D2",
dArr: "\u21D3",
hArr: "\u21D4",
forall: "\u2200",
part: "\u2202",
exist: "\u2203",
empty: "\u2205",
nabla: "\u2207",
isin: "\u2208",
notin: "\u2209",
ni: "\u220B",
prod: "\u220F",
sum: "\u2211",
minus: "\u2212",
lowast: "\u2217",
radic: "\u221A",
prop: "\u221D",
infin: "\u221E",
ang: "\u2220",
and: "\u2227",
or: "\u2228",
cap: "\u2229",
cup: "\u222A",
int: "\u222B",
there4: "\u2234",
sim: "\u223C",
cong: "\u2245",
asymp: "\u2248",
ne: "\u2260",
equiv: "\u2261",
le: "\u2264",
ge: "\u2265",
sub: "\u2282",
sup: "\u2283",
nsub: "\u2284",
sube: "\u2286",
supe: "\u2287",
oplus: "\u2295",
otimes: "\u2297",
perp: "\u22A5",
sdot: "\u22C5",
lceil: "\u2308",
rceil: "\u2309",
lfloor: "\u230A",
rfloor: "\u230B",
lang: "\u2329",
rang: "\u232A",
loz: "\u25CA",
spades: "\u2660",
clubs: "\u2663",
hearts: "\u2665",
diams: "\u2666"
};
const JsxErrors = ParseErrorEnum`jsx`({
AttributeIsEmpty: "JSX attributes must only be assigned a non-empty expression.",
MissingClosingTagElement: ({
openingTagName
}) => `Expected corresponding JSX closing tag for <${openingTagName}>.`,
MissingClosingTagFragment: "Expected corresponding JSX closing tag for <>.",
UnexpectedSequenceExpression: "Sequence expressions cannot be directly nested inside JSX. Did you mean to wrap it in parentheses (...)?",
UnexpectedToken: ({
unexpected,
HTMLEntity
}) => `Unexpected token \`${unexpected}\`. Did you mean \`${HTMLEntity}\` or \`{'${unexpected}'}\`?`,
UnsupportedJsxValue: "JSX value should be either an expression or a quoted JSX text.",
UnterminatedJsxContent: "Unterminated JSX contents.",
UnwrappedAdjacentJSXElements: "Adjacent JSX elements must be wrapped in an enclosing tag. Did you want a JSX fragment <>...</>?"
});
function isFragment(object) {
return object ? object.type === "JSXOpeningFragment" || object.type === "JSXClosingFragment" : false;
}
function getQualifiedJSXName(object) {
if (object.type === "JSXIdentifier") {
return object.name;
}
if (object.type === "JSXNamespacedName") {
return object.namespace.name + ":" + object.name.name;
}
if (object.type === "JSXMemberExpression") {
return getQualifiedJSXName(object.object) + "." + getQualifiedJSXName(object.property);
}
throw new Error("Node had unexpected type: " + object.type);
}
var jsx = superClass => class JSXParserMixin extends superClass {
jsxReadToken() {
let out = "";
let chunkStart = this.state.pos;
for (;;) {
if (this.state.pos >= this.length) {
throw this.raise(JsxErrors.UnterminatedJsxContent, this.state.startLoc);
}
const ch = this.input.charCodeAt(this.state.pos);
switch (ch) {
case 60:
case 123:
if (this.state.pos === this.state.start) {
if (ch === 60 && this.state.canStartJSXElement) {
++this.state.pos;
this.finishToken(143);
} else {
super.getTokenFromCode(ch);
}
return;
}
out += this.input.slice(chunkStart, this.state.pos);
this.finishToken(142, out);
return;
case 38:
out += this.input.slice(chunkStart, this.state.pos);
out += this.jsxReadEntity();
chunkStart = this.state.pos;
break;
case 62:
case 125:
default:
if (isNewLine(ch)) {
out += this.input.slice(chunkStart, this.state.pos);
out += this.jsxReadNewLine(true);
chunkStart = this.state.pos;
} else {
++this.state.pos;
}
}
}
}
jsxReadNewLine(normalizeCRLF) {
const ch = this.input.charCodeAt(this.state.pos);
let out;
++this.state.pos;
if (ch === 13 && this.input.charCodeAt(this.state.pos) === 10) {
++this.state.pos;
out = normalizeCRLF ? "\n" : "\r\n";
} else {
out = String.fromCharCode(ch);
}
++this.state.curLine;
this.state.lineStart = this.state.pos;
return out;
}
jsxReadString(quote) {
let out = "";
let chunkStart = ++this.state.pos;
for (;;) {
if (this.state.pos >= this.length) {
throw this.raise(Errors.UnterminatedString, this.state.startLoc);
}
const ch = this.input.charCodeAt(this.state.pos);
if (ch === quote) break;
if (ch === 38) {
out += this.input.slice(chunkStart, this.state.pos);
out += this.jsxReadEntity();
chunkStart = this.state.pos;
} else if (isNewLine(ch)) {
out += this.input.slice(chunkStart, this.state.pos);
out += this.jsxReadNewLine(false);
chunkStart = this.state.pos;
} else {
++this.state.pos;
}
}
out += this.input.slice(chunkStart, this.state.pos++);
this.finishToken(134, out);
}
jsxReadEntity() {
const startPos = ++this.state.pos;
if (this.codePointAtPos(this.state.pos) === 35) {
++this.state.pos;
let radix = 10;
if (this.codePointAtPos(this.state.pos) === 120) {
radix = 16;
++this.state.pos;
}
const codePoint = this.readInt(radix, undefined, false, "bail");
if (codePoint !== null && this.codePointAtPos(this.state.pos) === 59) {
++this.state.pos;
return String.fromCodePoint(codePoint);
}
} else {
let count = 0;
let semi = false;
while (count++ < 10 && this.state.pos < this.length && !(semi = this.codePointAtPos(this.state.pos) === 59)) {
++this.state.pos;
}
if (semi) {
const desc = this.input.slice(startPos, this.state.pos);
const entity = entities[desc];
++this.state.pos;
if (entity) {
return entity;
}
}
}
this.state.pos = startPos;
return "&";
}
jsxReadWord() {
let ch;
const start = this.state.pos;
do {
ch = this.input.charCodeAt(++this.state.pos);
} while (isIdentifierChar(ch) || ch === 45);
this.finishToken(141, this.input.slice(start, this.state.pos));
}
jsxParseIdentifier() {
const node = this.startNode();
if (this.match(141)) {
node.name = this.state.value;
} else if (tokenIsKeyword(this.state.type)) {
node.name = tokenLabelName(this.state.type);
} else {
this.unexpected();
}
this.next();
return this.finishNode(node, "JSXIdentifier");
}
jsxParseNamespacedName() {
const startLoc = this.state.startLoc;
const name = this.jsxParseIdentifier();
if (!this.eat(14)) return name;
const node = this.startNodeAt(startLoc);
node.namespace = name;
node.name = this.jsxParseIdentifier();
return this.finishNode(node, "JSXNamespacedName");
}
jsxParseElementName() {
const startLoc = this.state.startLoc;
let node = this.jsxParseNamespacedName();
if (node.type === "JSXNamespacedName") {
return node;
}
while (this.eat(16)) {
const newNode = this.startNodeAt(startLoc);
newNode.object = node;
newNode.property = this.jsxParseIdentifier();
node = this.finishNode(newNode, "JSXMemberExpression");
}
return node;
}
jsxParseAttributeValue() {
let node;
switch (this.state.type) {
case 5:
node = this.startNode();
this.setContext(types.brace);
this.next();
node = this.jsxParseExpressionContainer(node, types.j_oTag);
if (node.expression.type === "JSXEmptyExpression") {
this.raise(JsxErrors.AttributeIsEmpty, node);
}
return node;
case 143:
case 134:
return this.parseExprAtom();
default:
throw this.raise(JsxErrors.UnsupportedJsxValue, this.state.startLoc);
}
}
jsxParseEmptyExpression() {
const node = this.startNodeAt(this.state.lastTokEndLoc);
return this.finishNodeAt(node, "JSXEmptyExpression", this.state.startLoc);
}
jsxParseSpreadChild(node) {
this.next();
node.expression = this.parseExpression();
this.setContext(types.j_expr);
this.state.canStartJSXElement = true;
this.expect(8);
return this.finishNode(node, "JSXSpreadChild");
}
jsxParseExpressionContainer(node, previousContext) {
if (this.match(8)) {
node.expression = this.jsxParseEmptyExpression();
} else {
const expression = this.parseExpression();
node.expression = expression;
}
this.setContext(previousContext);
this.state.canStartJSXElement = true;
this.expect(8);
return this.finishNode(node, "JSXExpressionContainer");
}
jsxParseAttribute() {
const node = this.startNode();
if (this.match(5)) {
this.setContext(types.brace);
this.next();
this.expect(21);
node.argument = this.parseMaybeAssignAllowIn();
this.setContext(types.j_oTag);
this.state.canStartJSXElement = true;
this.expect(8);
return this.finishNode(node, "JSXSpreadAttribute");
}
node.name = this.jsxParseNamespacedName();
node.value = this.eat(29) ? this.jsxParseAttributeValue() : null;
return this.finishNode(node, "JSXAttribute");
}
jsxParseOpeningElementAt(startLoc) {
const node = this.startNodeAt(startLoc);
if (this.eat(144)) {
return this.finishNode(node, "JSXOpeningFragment");
}
node.name = this.jsxParseElementName();
return this.jsxParseOpeningElementAfterName(node);
}
jsxParseOpeningElementAfterName(node) {
const attributes = [];
while (!this.match(56) && !this.match(144)) {
attributes.push(this.jsxParseAttribute());
}
node.attributes = attributes;
node.selfClosing = this.eat(56);
this.expect(144);
return this.finishNode(node, "JSXOpeningElement");
}
jsxParseClosingElementAt(startLoc) {
const node = this.startNodeAt(startLoc);
if (this.eat(144)) {
return this.finishNode(node, "JSXClosingFragment");
}
node.name = this.jsxParseElementName();
this.expect(144);
return this.finishNode(node, "JSXClosingElement");
}
jsxParseElementAt(startLoc) {
const node = this.startNodeAt(startLoc);
const children = [];
const openingElement = this.jsxParseOpeningElementAt(startLoc);
let closingElement = null;
if (!openingElement.selfClosing) {
contents: for (;;) {
switch (this.state.type) {
case 143:
startLoc = this.state.startLoc;
this.next();
if (this.eat(56)) {
closingElement = this.jsxParseClosingElementAt(startLoc);
break contents;
}
children.push(this.jsxParseElementAt(startLoc));
break;
case 142:
children.push(this.parseLiteral(this.state.value, "JSXText"));
break;
case 5:
{
const node = this.startNode();
this.setContext(types.brace);
this.next();
if (this.match(21)) {
children.push(this.jsxParseSpreadChild(node));
} else {
children.push(this.jsxParseExpressionContainer(node, types.j_expr));
}
break;
}
default:
this.unexpected();
}
}
if (isFragment(openingElement) && !isFragment(closingElement) && closingElement !== null) {
this.raise(JsxErrors.MissingClosingTagFragment, closingElement);
} else if (!isFragment(openingElement) && isFragment(closingElement)) {
this.raise(JsxErrors.MissingClosingTagElement, closingElement, {
openingTagName: getQualifiedJSXName(openingElement.name)
});
} else if (!isFragment(openingElement) && !isFragment(closingElement)) {
if (getQualifiedJSXName(closingElement.name) !== getQualifiedJSXName(openingElement.name)) {
this.raise(JsxErrors.MissingClosingTagElement, closingElement, {
openingTagName: getQualifiedJSXName(openingElement.name)
});
}
}
}
if (isFragment(openingElement)) {
node.openingFragment = openingElement;
node.closingFragment = closingElement;
} else {
node.openingElement = openingElement;
node.closingElement = closingElement;
}
node.children = children;
if (this.match(47)) {
throw this.raise(JsxErrors.UnwrappedAdjacentJSXElements, this.state.startLoc);
}
return isFragment(openingElement) ? this.finishNode(node, "JSXFragment") : this.finishNode(node, "JSXElement");
}
jsxParseElement() {
const startLoc = this.state.startLoc;
this.next();
return this.jsxParseElementAt(startLoc);
}
setContext(newContext) {
const {
context
} = this.state;
context[context.length - 1] = newContext;
}
parseExprAtom(refExpressionErrors) {
if (this.match(143)) {
return this.jsxParseElement();
} else if (this.match(47) && this.input.charCodeAt(this.state.pos) !== 33) {
this.replaceToken(143);
return this.jsxParseElement();
} else {
return super.parseExprAtom(refExpressionErrors);
}
}
skipSpace() {
const curContext = this.curContext();
if (!curContext.preserveSpace) super.skipSpace();
}
getTokenFromCode(code) {
const context = this.curContext();
if (context === types.j_expr) {
this.jsxReadToken();
return;
}
if (context === types.j_oTag || context === types.j_cTag) {
if (isIdentifierStart(code)) {
this.jsxReadWord();
return;
}
if (code === 62) {
++this.state.pos;
this.finishToken(144);
return;
}
if ((code === 34 || code === 39) && context === types.j_oTag) {
this.jsxReadString(code);
return;
}
}
if (code === 60 && this.state.canStartJSXElement && this.input.charCodeAt(this.state.pos + 1) !== 33) {
++this.state.pos;
this.finishToken(143);
return;
}
super.getTokenFromCode(code);
}
updateContext(prevType) {
const {
context,
type
} = this.state;
if (type === 56 && prevType === 143) {
context.splice(-2, 2, types.j_cTag);
this.state.canStartJSXElement = false;
} else if (type === 143) {
context.push(types.j_oTag);
} else if (type === 144) {
const out = context[context.length - 1];
if (out === types.j_oTag && prevType === 56 || out === types.j_cTag) {
context.pop();
this.state.canStartJSXElement = context[context.length - 1] === types.j_expr;
} else {
this.setContext(types.j_expr);
this.state.canStartJSXElement = true;
}
} else {
this.state.canStartJSXElement = tokenComesBeforeExpression(type);
}
}
};
class TypeScriptScope extends Scope {
constructor(...args) {
super(...args);
this.tsNames = new Map();
}
}
class TypeScriptScopeHandler extends ScopeHandler {
constructor(...args) {
super(...args);
this.importsStack = [];
}
createScope(flags) {
this.importsStack.push(new Set());
return new TypeScriptScope(flags);
}
enter(flags) {
if (flags === 256) {
this.importsStack.push(new Set());
}
super.enter(flags);
}
exit() {
const flags = super.exit();
if (flags === 256) {
this.importsStack.pop();
}
return flags;
}
hasImport(name, allowShadow) {
const len = this.importsStack.length;
if (this.importsStack[len - 1].has(name)) {
return true;
}
if (!allowShadow && len > 1) {
for (let i = 0; i < len - 1; i++) {
if (this.importsStack[i].has(name)) return true;
}
}
return false;
}
declareName(name, bindingType, loc) {
if (bindingType & 4096) {
if (this.hasImport(name, true)) {
this.parser.raise(Errors.VarRedeclaration, loc, {
identifierName: name
});
}
this.importsStack[this.importsStack.length - 1].add(name);
return;
}
const scope = this.currentScope();
let type = scope.tsNames.get(name) || 0;
if (bindingType & 1024) {
this.maybeExportDefined(scope, name);
scope.tsNames.set(name, type | 16);
return;
}
super.declareName(name, bindingType, loc);
if (bindingType & 2) {
if (!(bindingType & 1)) {
this.checkRedeclarationInScope(scope, name, bindingType, loc);
this.maybeExportDefined(scope, name);
}
type = type | 1;
}
if (bindingType & 256) {
type = type | 2;
}
if (bindingType & 512) {
type = type | 4;
}
if (bindingType & 128) {
type = type | 8;
}
if (type) scope.tsNames.set(name, type);
}
isRedeclaredInScope(scope, name, bindingType) {
const type = scope.tsNames.get(name);
if ((type & 2) > 0) {
if (bindingType & 256) {
const isConst = !!(bindingType & 512);
const wasConst = (type & 4) > 0;
return isConst !== wasConst;
}
return true;
}
if (bindingType & 128 && (type & 8) > 0) {
if (scope.names.get(name) & 2) {
return !!(bindingType & 1);
} else {
return false;
}
}
if (bindingType & 2 && (type & 1) > 0) {
return true;
}
return super.isRedeclaredInScope(scope, name, bindingType);
}
checkLocalExport(id) {
const {
name
} = id;
if (this.hasImport(name)) return;
const len = this.scopeStack.length;
for (let i = len - 1; i >= 0; i--) {
const scope = this.scopeStack[i];
const type = scope.tsNames.get(name);
if ((type & 1) > 0 || (type & 16) > 0) {
return;
}
}
super.checkLocalExport(id);
}
}
const unwrapParenthesizedExpression = node => {
return node.type === "ParenthesizedExpression" ? unwrapParenthesizedExpression(node.expression) : node;
};
class LValParser extends NodeUtils {
toAssignable(node, isLHS = false) {
var _node$extra, _node$extra3;
let parenthesized = undefined;
if (node.type === "ParenthesizedExpression" || (_node$extra = node.extra) != null && _node$extra.parenthesized) {
parenthesized = unwrapParenthesizedExpression(node);
if (isLHS) {
if (parenthesized.type === "Identifier") {
this.expressionScope.recordArrowParameterBindingError(Errors.InvalidParenthesizedAssignment, node);
} else if (parenthesized.type !== "MemberExpression" && !this.isOptionalMemberExpression(parenthesized)) {
this.raise(Errors.InvalidParenthesizedAssignment, node);
}
} else {
this.raise(Errors.InvalidParenthesizedAssignment, node);
}
}
switch (node.type) {
case "Identifier":
case "ObjectPattern":
case "ArrayPattern":
case "AssignmentPattern":
case "RestElement":
break;
case "ObjectExpression":
node.type = "ObjectPattern";
for (let i = 0, length = node.properties.length, last = length - 1; i < length; i++) {
var _node$extra2;
const prop = node.properties[i];
const isLast = i === last;
this.toAssignableObjectExpressionProp(prop, isLast, isLHS);
if (isLast && prop.type === "RestElement" && (_node$extra2 = node.extra) != null && _node$extra2.trailingCommaLoc) {
this.raise(Errors.RestTrailingComma, node.extra.trailingCommaLoc);
}
}
break;
case "ObjectProperty":
{
const {
key,
value
} = node;
if (this.isPrivateName(key)) {
this.classScope.usePrivateName(this.getPrivateNameSV(key), key.loc.start);
}
this.toAssignable(value, isLHS);
break;
}
case "SpreadElement":
{
throw new Error("Internal @babel/parser error (this is a bug, please report it)." + " SpreadElement should be converted by .toAssignable's caller.");
}
case "ArrayExpression":
node.type = "ArrayPattern";
this.toAssignableList(node.elements, (_node$extra3 = node.extra) == null ? void 0 : _node$extra3.trailingCommaLoc, isLHS);
break;
case "AssignmentExpression":
if (node.operator !== "=") {
this.raise(Errors.MissingEqInAssignment, node.left.loc.end);
}
node.type = "AssignmentPattern";
delete node.operator;
this.toAssignable(node.left, isLHS);
break;
case "ParenthesizedExpression":
this.toAssignable(parenthesized, isLHS);
break;
}
}
toAssignableObjectExpressionProp(prop, isLast, isLHS) {
if (prop.type === "ObjectMethod") {
this.raise(prop.kind === "get" || prop.kind === "set" ? Errors.PatternHasAccessor : Errors.PatternHasMethod, prop.key);
} else if (prop.type === "SpreadElement") {
prop.type = "RestElement";
const arg = prop.argument;
this.checkToRestConversion(arg, false);
this.toAssignable(arg, isLHS);
if (!isLast) {
this.raise(Errors.RestTrailingComma, prop);
}
} else {
this.toAssignable(prop, isLHS);
}
}
toAssignableList(exprList, trailingCommaLoc, isLHS) {
const end = exprList.length - 1;
for (let i = 0; i <= end; i++) {
const elt = exprList[i];
if (!elt) continue;
this.toAssignableListItem(exprList, i, isLHS);
if (elt.type === "RestElement") {
if (i < end) {
this.raise(Errors.RestTrailingComma, elt);
} else if (trailingCommaLoc) {
this.raise(Errors.RestTrailingComma, trailingCommaLoc);
}
}
}
}
toAssignableListItem(exprList, index, isLHS) {
const node = exprList[index];
if (node.type === "SpreadElement") {
node.type = "RestElement";
const arg = node.argument;
this.checkToRestConversion(arg, true);
this.toAssignable(arg, isLHS);
} else {
this.toAssignable(node, isLHS);
}
}
isAssignable(node, isBinding) {
switch (node.type) {
case "Identifier":
case "ObjectPattern":
case "ArrayPattern":
case "AssignmentPattern":
case "RestElement":
return true;
case "ObjectExpression":
{
const last = node.properties.length - 1;
return node.properties.every((prop, i) => {
return prop.type !== "ObjectMethod" && (i === last || prop.type !== "SpreadElement") && this.isAssignable(prop);
});
}
case "ObjectProperty":
return this.isAssignable(node.value);
case "SpreadElement":
return this.isAssignable(node.argument);
case "ArrayExpression":
return node.elements.every(element => element === null || this.isAssignable(element));
case "AssignmentExpression":
return node.operator === "=";
case "ParenthesizedExpression":
return this.isAssignable(node.expression);
case "MemberExpression":
case "OptionalMemberExpression":
return !isBinding;
default:
return false;
}
}
toReferencedList(exprList, isParenthesizedExpr) {
return exprList;
}
toReferencedListDeep(exprList, isParenthesizedExpr) {
this.toReferencedList(exprList, isParenthesizedExpr);
for (const expr of exprList) {
if ((expr == null ? void 0 : expr.type) === "ArrayExpression") {
this.toReferencedListDeep(expr.elements);
}
}
}
parseSpread(refExpressionErrors) {
const node = this.startNode();
this.next();
node.argument = this.parseMaybeAssignAllowIn(refExpressionErrors, undefined);
return this.finishNode(node, "SpreadElement");
}
parseRestBinding() {
const node = this.startNode();
this.next();
node.argument = this.parseBindingAtom();
return this.finishNode(node, "RestElement");
}
parseBindingAtom() {
switch (this.state.type) {
case 0:
{
const node = this.startNode();
this.next();
node.elements = this.parseBindingList(3, 93, 1);
return this.finishNode(node, "ArrayPattern");
}
case 5:
return this.parseObjectLike(8, true);
}
return this.parseIdentifier();
}
parseBindingList(close, closeCharCode, flags) {
const allowEmpty = flags & 1;
const elts = [];
let first = true;
while (!this.eat(close)) {
if (first) {
first = false;
} else {
this.expect(12);
}
if (allowEmpty && this.match(12)) {
elts.push(null);
} else if (this.eat(close)) {
break;
} else if (this.match(21)) {
let rest = this.parseRestBinding();
if (this.hasPlugin("flow") || flags & 2) {
rest = this.parseFunctionParamType(rest);
}
elts.push(rest);
if (!this.checkCommaAfterRest(closeCharCode)) {
this.expect(close);
break;
}
} else {
const decorators = [];
if (flags & 2) {
if (this.match(26) && this.hasPlugin("decorators")) {
this.raise(Errors.UnsupportedParameterDecorator, this.state.startLoc);
}
while (this.match(26)) {
decorators.push(this.parseDecorator());
}
}
elts.push(this.parseBindingElement(flags, decorators));
}
}
return elts;
}
parseBindingRestProperty(prop) {
this.next();
prop.argument = this.parseIdentifier();
this.checkCommaAfterRest(125);
return this.finishNode(prop, "RestElement");
}
parseBindingProperty() {
const {
type,
startLoc
} = this.state;
if (type === 21) {
return this.parseBindingRestProperty(this.startNode());
}
const prop = this.startNode();
if (type === 139) {
this.expectPlugin("destructuringPrivate", startLoc);
this.classScope.usePrivateName(this.state.value, startLoc);
prop.key = this.parsePrivateName();
} else {
this.parsePropertyName(prop);
}
prop.method = false;
return this.parseObjPropValue(prop, startLoc, false, false, true, false);
}
parseBindingElement(flags, decorators) {
const left = this.parseMaybeDefault();
if (this.hasPlugin("flow") || flags & 2) {
this.parseFunctionParamType(left);
}
const elt = this.parseMaybeDefault(left.loc.start, left);
if (decorators.length) {
left.decorators = decorators;
}
return elt;
}
parseFunctionParamType(param) {
return param;
}
parseMaybeDefault(startLoc, left) {
startLoc != null ? startLoc : startLoc = this.state.startLoc;
left = left != null ? left : this.parseBindingAtom();
if (!this.eat(29)) return left;
const node = this.startNodeAt(startLoc);
node.left = left;
node.right = this.parseMaybeAssignAllowIn();
return this.finishNode(node, "AssignmentPattern");
}
isValidLVal(type, isUnparenthesizedInAssign, binding) {
switch (type) {
case "AssignmentPattern":
return "left";
case "RestElement":
return "argument";
case "ObjectProperty":
return "value";
case "ParenthesizedExpression":
return "expression";
case "ArrayPattern":
return "elements";
case "ObjectPattern":
return "properties";
}
return false;
}
isOptionalMemberExpression(expression) {
return expression.type === "OptionalMemberExpression";
}
checkLVal(expression, ancestor, binding = 64, checkClashes = false, strictModeChanged = false, hasParenthesizedAncestor = false) {
var _expression$extra;
const type = expression.type;
if (this.isObjectMethod(expression)) return;
const isOptionalMemberExpression = this.isOptionalMemberExpression(expression);
if (isOptionalMemberExpression || type === "MemberExpression") {
if (isOptionalMemberExpression) {
this.expectPlugin("optionalChainingAssign", expression.loc.start);
if (ancestor.type !== "AssignmentExpression") {
this.raise(Errors.InvalidLhsOptionalChaining, expression, {
ancestor
});
}
}
if (binding !== 64) {
this.raise(Errors.InvalidPropertyBindingPattern, expression);
}
return;
}
if (type === "Identifier") {
this.checkIdentifier(expression, binding, strictModeChanged);
const {
name
} = expression;
if (checkClashes) {
if (checkClashes.has(name)) {
this.raise(Errors.ParamDupe, expression);
} else {
checkClashes.add(name);
}
}
return;
}
const validity = this.isValidLVal(type, !(hasParenthesizedAncestor || (_expression$extra = expression.extra) != null && _expression$extra.parenthesized) && ancestor.type === "AssignmentExpression", binding);
if (validity === true) return;
if (validity === false) {
const ParseErrorClass = binding === 64 ? Errors.InvalidLhs : Errors.InvalidLhsBinding;
this.raise(ParseErrorClass, expression, {
ancestor
});
return;
}
let key, isParenthesizedExpression;
if (typeof validity === "string") {
key = validity;
isParenthesizedExpression = type === "ParenthesizedExpression";
} else {
[key, isParenthesizedExpression] = validity;
}
const nextAncestor = type === "ArrayPattern" || type === "ObjectPattern" ? {
type
} : ancestor;
const val = expression[key];
if (Array.isArray(val)) {
for (const child of val) {
if (child) {
this.checkLVal(child, nextAncestor, binding, checkClashes, strictModeChanged, isParenthesizedExpression);
}
}
} else if (val) {
this.checkLVal(val, nextAncestor, binding, checkClashes, strictModeChanged, isParenthesizedExpression);
}
}
checkIdentifier(at, bindingType, strictModeChanged = false) {
if (this.state.strict && (strictModeChanged ? isStrictBindReservedWord(at.name, this.inModule) : isStrictBindOnlyReservedWord(at.name))) {
if (bindingType === 64) {
this.raise(Errors.StrictEvalArguments, at, {
referenceName: at.name
});
} else {
this.raise(Errors.StrictEvalArgumentsBinding, at, {
bindingName: at.name
});
}
}
if (bindingType & 8192 && at.name === "let") {
this.raise(Errors.LetInLexicalBinding, at);
}
if (!(bindingType & 64)) {
this.declareNameFromIdentifier(at, bindingType);
}
}
declareNameFromIdentifier(identifier, binding) {
this.scope.declareName(identifier.name, binding, identifier.loc.start);
}
checkToRestConversion(node, allowPattern) {
switch (node.type) {
case "ParenthesizedExpression":
this.checkToRestConversion(node.expression, allowPattern);
break;
case "Identifier":
case "MemberExpression":
break;
case "ArrayExpression":
case "ObjectExpression":
if (allowPattern) break;
default:
this.raise(Errors.InvalidRestAssignmentPattern, node);
}
}
checkCommaAfterRest(close) {
if (!this.match(12)) {
return false;
}
this.raise(this.lookaheadCharCode() === close ? Errors.RestTrailingComma : Errors.ElementAfterRest, this.state.startLoc);
return true;
}
}
function nonNull(x) {
if (x == null) {
throw new Error(`Unexpected ${x} value.`);
}
return x;
}
function assert(x) {
if (!x) {
throw new Error("Assert fail");
}
}
const TSErrors = ParseErrorEnum`typescript`({
AbstractMethodHasImplementation: ({
methodName
}) => `Method '${methodName}' cannot have an implementation because it is marked abstract.`,
AbstractPropertyHasInitializer: ({
propertyName
}) => `Property '${propertyName}' cannot have an initializer because it is marked abstract.`,
AccessorCannotBeOptional: "An 'accessor' property cannot be declared optional.",
AccessorCannotDeclareThisParameter: "'get' and 'set' accessors cannot declare 'this' parameters.",
AccessorCannotHaveTypeParameters: "An accessor cannot have type parameters.",
ClassMethodHasDeclare: "Class methods cannot have the 'declare' modifier.",
ClassMethodHasReadonly: "Class methods cannot have the 'readonly' modifier.",
ConstInitializerMustBeStringOrNumericLiteralOrLiteralEnumReference: "A 'const' initializer in an ambient context must be a string or numeric literal or literal enum reference.",
ConstructorHasTypeParameters: "Type parameters cannot appear on a constructor declaration.",
DeclareAccessor: ({
kind
}) => `'declare' is not allowed in ${kind}ters.`,
DeclareClassFieldHasInitializer: "Initializers are not allowed in ambient contexts.",
DeclareFunctionHasImplementation: "An implementation cannot be declared in ambient contexts.",
DuplicateAccessibilityModifier: ({
modifier
}) => `Accessibility modifier already seen.`,
DuplicateModifier: ({
modifier
}) => `Duplicate modifier: '${modifier}'.`,
EmptyHeritageClauseType: ({
token
}) => `'${token}' list cannot be empty.`,
EmptyTypeArguments: "Type argument list cannot be empty.",
EmptyTypeParameters: "Type parameter list cannot be empty.",
ExpectedAmbientAfterExportDeclare: "'export declare' must be followed by an ambient declaration.",
ImportAliasHasImportType: "An import alias can not use 'import type'.",
ImportReflectionHasImportType: "An `import module` declaration can not use `type` modifier",
IncompatibleModifiers: ({
modifiers
}) => `'${modifiers[0]}' modifier cannot be used with '${modifiers[1]}' modifier.`,
IndexSignatureHasAbstract: "Index signatures cannot have the 'abstract' modifier.",
IndexSignatureHasAccessibility: ({
modifier
}) => `Index signatures cannot have an accessibility modifier ('${modifier}').`,
IndexSignatureHasDeclare: "Index signatures cannot have the 'declare' modifier.",
IndexSignatureHasOverride: "'override' modifier cannot appear on an index signature.",
IndexSignatureHasStatic: "Index signatures cannot have the 'static' modifier.",
InitializerNotAllowedInAmbientContext: "Initializers are not allowed in ambient contexts.",
InvalidHeritageClauseType: ({
token
}) => `'${token}' list can only include identifiers or qualified-names with optional type arguments.`,
InvalidModifierOnTypeMember: ({
modifier
}) => `'${modifier}' modifier cannot appear on a type member.`,
InvalidModifierOnTypeParameter: ({
modifier
}) => `'${modifier}' modifier cannot appear on a type parameter.`,
InvalidModifierOnTypeParameterPositions: ({
modifier
}) => `'${modifier}' modifier can only appear on a type parameter of a class, interface or type alias.`,
InvalidModifiersOrder: ({
orderedModifiers
}) => `'${orderedModifiers[0]}' modifier must precede '${orderedModifiers[1]}' modifier.`,
InvalidPropertyAccessAfterInstantiationExpression: "Invalid property access after an instantiation expression. " + "You can either wrap the instantiation expression in parentheses, or delete the type arguments.",
InvalidTupleMemberLabel: "Tuple members must be labeled with a simple identifier.",
MissingInterfaceName: "'interface' declarations must be followed by an identifier.",
NonAbstractClassHasAbstractMethod: "Abstract methods can only appear within an abstract class.",
NonClassMethodPropertyHasAbstractModifer: "'abstract' modifier can only appear on a class, method, or property declaration.",
OptionalTypeBeforeRequired: "A required element cannot follow an optional element.",
OverrideNotInSubClass: "This member cannot have an 'override' modifier because its containing class does not extend another class.",
PatternIsOptional: "A binding pattern parameter cannot be optional in an implementation signature.",
PrivateElementHasAbstract: "Private elements cannot have the 'abstract' modifier.",
PrivateElementHasAccessibility: ({
modifier
}) => `Private elements cannot have an accessibility modifier ('${modifier}').`,
ReadonlyForMethodSignature: "'readonly' modifier can only appear on a property declaration or index signature.",
ReservedArrowTypeParam: "This syntax is reserved in files with the .mts or .cts extension. Add a trailing comma, as in `<T,>() => ...`.",
ReservedTypeAssertion: "This syntax is reserved in files with the .mts or .cts extension. Use an `as` expression instead.",
SetAccessorCannotHaveOptionalParameter: "A 'set' accessor cannot have an optional parameter.",
SetAccessorCannotHaveRestParameter: "A 'set' accessor cannot have rest parameter.",
SetAccessorCannotHaveReturnType: "A 'set' accessor cannot have a return type annotation.",
SingleTypeParameterWithoutTrailingComma: ({
typeParameterName
}) => `Single type parameter ${typeParameterName} should have a trailing comma. Example usage: <${typeParameterName},>.`,
StaticBlockCannotHaveModifier: "Static class blocks cannot have any modifier.",
TupleOptionalAfterType: "A labeled tuple optional element must be declared using a question mark after the name and before the colon (`name?: type`), rather than after the type (`name: type?`).",
TypeAnnotationAfterAssign: "Type annotations must come before default assignments, e.g. instead of `age = 25: number` use `age: number = 25`.",
TypeImportCannotSpecifyDefaultAndNamed: "A type-only import can specify a default import or named bindings, but not both.",
TypeModifierIsUsedInTypeExports: "The 'type' modifier cannot be used on a named export when 'export type' is used on its export statement.",
TypeModifierIsUsedInTypeImports: "The 'type' modifier cannot be used on a named import when 'import type' is used on its import statement.",
UnexpectedParameterModifier: "A parameter property is only allowed in a constructor implementation.",
UnexpectedReadonly: "'readonly' type modifier is only permitted on array and tuple literal types.",
UnexpectedTypeAnnotation: "Did not expect a type annotation here.",
UnexpectedTypeCastInParameter: "Unexpected type cast in parameter position.",
UnsupportedImportTypeArgument: "Argument in a type import must be a string literal.",
UnsupportedParameterPropertyKind: "A parameter property may not be declared using a binding pattern.",
UnsupportedSignatureParameterKind: ({
type
}) => `Name in a signature must be an Identifier, ObjectPattern or ArrayPattern, instead got ${type}.`
});
function keywordTypeFromName(value) {
switch (value) {
case "any":
return "TSAnyKeyword";
case "boolean":
return "TSBooleanKeyword";
case "bigint":
return "TSBigIntKeyword";
case "never":
return "TSNeverKeyword";
case "number":
return "TSNumberKeyword";
case "object":
return "TSObjectKeyword";
case "string":
return "TSStringKeyword";
case "symbol":
return "TSSymbolKeyword";
case "undefined":
return "TSUndefinedKeyword";
case "unknown":
return "TSUnknownKeyword";
default:
return undefined;
}
}
function tsIsAccessModifier(modifier) {
return modifier === "private" || modifier === "public" || modifier === "protected";
}
function tsIsVarianceAnnotations(modifier) {
return modifier === "in" || modifier === "out";
}
var typescript = superClass => class TypeScriptParserMixin extends superClass {
constructor(...args) {
super(...args);
this.tsParseInOutModifiers = this.tsParseModifiers.bind(this, {
allowedModifiers: ["in", "out"],
disallowedModifiers: ["const", "public", "private", "protected", "readonly", "declare", "abstract", "override"],
errorTemplate: TSErrors.InvalidModifierOnTypeParameter
});
this.tsParseConstModifier = this.tsParseModifiers.bind(this, {
allowedModifiers: ["const"],
disallowedModifiers: ["in", "out"],
errorTemplate: TSErrors.InvalidModifierOnTypeParameterPositions
});
this.tsParseInOutConstModifiers = this.tsParseModifiers.bind(this, {
allowedModifiers: ["in", "out", "const"],
disallowedModifiers: ["public", "private", "protected", "readonly", "declare", "abstract", "override"],
errorTemplate: TSErrors.InvalidModifierOnTypeParameter
});
}
getScopeHandler() {
return TypeScriptScopeHandler;
}
tsIsIdentifier() {
return tokenIsIdentifier(this.state.type);
}
tsTokenCanFollowModifier() {
return this.match(0) || this.match(5) || this.match(55) || this.match(21) || this.match(139) || this.isLiteralPropertyName();
}
tsNextTokenOnSameLineAndCanFollowModifier() {
this.next();
if (this.hasPrecedingLineBreak()) {
return false;
}
return this.tsTokenCanFollowModifier();
}
tsNextTokenCanFollowModifier() {
if (this.match(106)) {
this.next();
return this.tsTokenCanFollowModifier();
}
return this.tsNextTokenOnSameLineAndCanFollowModifier();
}
tsParseModifier(allowedModifiers, stopOnStartOfClassStaticBlock) {
if (!tokenIsIdentifier(this.state.type) && this.state.type !== 58 && this.state.type !== 75) {
return undefined;
}
const modifier = this.state.value;
if (allowedModifiers.includes(modifier)) {
if (stopOnStartOfClassStaticBlock && this.tsIsStartOfStaticBlocks()) {
return undefined;
}
if (this.tsTryParse(this.tsNextTokenCanFollowModifier.bind(this))) {
return modifier;
}
}
return undefined;
}
tsParseModifiers({
allowedModifiers,
disallowedModifiers,
stopOnStartOfClassStaticBlock,
errorTemplate = TSErrors.InvalidModifierOnTypeMember
}, modified) {
const enforceOrder = (loc, modifier, before, after) => {
if (modifier === before && modified[after]) {
this.raise(TSErrors.InvalidModifiersOrder, loc, {
orderedModifiers: [before, after]
});
}
};
const incompatible = (loc, modifier, mod1, mod2) => {
if (modified[mod1] && modifier === mod2 || modified[mod2] && modifier === mod1) {
this.raise(TSErrors.IncompatibleModifiers, loc, {
modifiers: [mod1, mod2]
});
}
};
for (;;) {
const {
startLoc
} = this.state;
const modifier = this.tsParseModifier(allowedModifiers.concat(disallowedModifiers != null ? disallowedModifiers : []), stopOnStartOfClassStaticBlock);
if (!modifier) break;
if (tsIsAccessModifier(modifier)) {
if (modified.accessibility) {
this.raise(TSErrors.DuplicateAccessibilityModifier, startLoc, {
modifier
});
} else {
enforceOrder(startLoc, modifier, modifier, "override");
enforceOrder(startLoc, modifier, modifier, "static");
enforceOrder(startLoc, modifier, modifier, "readonly");
modified.accessibility = modifier;
}
} else if (tsIsVarianceAnnotations(modifier)) {
if (modified[modifier]) {
this.raise(TSErrors.DuplicateModifier, startLoc, {
modifier
});
}
modified[modifier] = true;
enforceOrder(startLoc, modifier, "in", "out");
} else {
if (hasOwnProperty.call(modified, modifier)) {
this.raise(TSErrors.DuplicateModifier, startLoc, {
modifier
});
} else {
enforceOrder(startLoc, modifier, "static", "readonly");
enforceOrder(startLoc, modifier, "static", "override");
enforceOrder(startLoc, modifier, "override", "readonly");
enforceOrder(startLoc, modifier, "abstract", "override");
incompatible(startLoc, modifier, "declare", "override");
incompatible(startLoc, modifier, "static", "abstract");
}
modified[modifier] = true;
}
if (disallowedModifiers != null && disallowedModifiers.includes(modifier)) {
this.raise(errorTemplate, startLoc, {
modifier
});
}
}
}
tsIsListTerminator(kind) {
switch (kind) {
case "EnumMembers":
case "TypeMembers":
return this.match(8);
case "HeritageClauseElement":
return this.match(5);
case "TupleElementTypes":
return this.match(3);
case "TypeParametersOrArguments":
return this.match(48);
}
}
tsParseList(kind, parseElement) {
const result = [];
while (!this.tsIsListTerminator(kind)) {
result.push(parseElement());
}
return result;
}
tsParseDelimitedList(kind, parseElement, refTrailingCommaPos) {
return nonNull(this.tsParseDelimitedListWorker(kind, parseElement, true, refTrailingCommaPos));
}
tsParseDelimitedListWorker(kind, parseElement, expectSuccess, refTrailingCommaPos) {
const result = [];
let trailingCommaPos = -1;
for (;;) {
if (this.tsIsListTerminator(kind)) {
break;
}
trailingCommaPos = -1;
const element = parseElement();
if (element == null) {
return undefined;
}
result.push(element);
if (this.eat(12)) {
trailingCommaPos = this.state.lastTokStartLoc.index;
continue;
}
if (this.tsIsListTerminator(kind)) {
break;
}
if (expectSuccess) {
this.expect(12);
}
return undefined;
}
if (refTrailingCommaPos) {
refTrailingCommaPos.value = trailingCommaPos;
}
return result;
}
tsParseBracketedList(kind, parseElement, bracket, skipFirstToken, refTrailingCommaPos) {
if (!skipFirstToken) {
if (bracket) {
this.expect(0);
} else {
this.expect(47);
}
}
const result = this.tsParseDelimitedList(kind, parseElement, refTrailingCommaPos);
if (bracket) {
this.expect(3);
} else {
this.expect(48);
}
return result;
}
tsParseImportType() {
const node = this.startNode();
this.expect(83);
this.expect(10);
if (!this.match(134)) {
this.raise(TSErrors.UnsupportedImportTypeArgument, this.state.startLoc);
{
node.argument = super.parseExprAtom();
}
} else {
{
node.argument = this.parseStringLiteral(this.state.value);
}
}
if (this.eat(12) && !this.match(11)) {
node.options = super.parseMaybeAssignAllowIn();
this.eat(12);
} else {
node.options = null;
}
this.expect(11);
if (this.eat(16)) {
node.qualifier = this.tsParseEntityName(1 | 2);
}
if (this.match(47)) {
{
node.typeParameters = this.tsParseTypeArguments();
}
}
return this.finishNode(node, "TSImportType");
}
tsParseEntityName(flags) {
let entity;
if (flags & 1 && this.match(78)) {
if (flags & 2) {
entity = this.parseIdentifier(true);
} else {
const node = this.startNode();
this.next();
entity = this.finishNode(node, "ThisExpression");
}
} else {
entity = this.parseIdentifier(!!(flags & 1));
}
while (this.eat(16)) {
const node = this.startNodeAtNode(entity);
node.left = entity;
node.right = this.parseIdentifier(!!(flags & 1));
entity = this.finishNode(node, "TSQualifiedName");
}
return entity;
}
tsParseTypeReference() {
const node = this.startNode();
node.typeName = this.tsParseEntityName(1);
if (!this.hasPrecedingLineBreak() && this.match(47)) {
{
node.typeParameters = this.tsParseTypeArguments();
}
}
return this.finishNode(node, "TSTypeReference");
}
tsParseThisTypePredicate(lhs) {
this.next();
const node = this.startNodeAtNode(lhs);
node.parameterName = lhs;
node.typeAnnotation = this.tsParseTypeAnnotation(false);
node.asserts = false;
return this.finishNode(node, "TSTypePredicate");
}
tsParseThisTypeNode() {
const node = this.startNode();
this.next();
return this.finishNode(node, "TSThisType");
}
tsParseTypeQuery() {
const node = this.startNode();
this.expect(87);
if (this.match(83)) {
node.exprName = this.tsParseImportType();
} else {
{
node.exprName = this.tsParseEntityName(1 | 2);
}
}
if (!this.hasPrecedingLineBreak() && this.match(47)) {
{
node.typeParameters = this.tsParseTypeArguments();
}
}
return this.finishNode(node, "TSTypeQuery");
}
tsParseTypeParameter(parseModifiers) {
const node = this.startNode();
parseModifiers(node);
node.name = this.tsParseTypeParameterName();
node.constraint = this.tsEatThenParseType(81);
node.default = this.tsEatThenParseType(29);
return this.finishNode(node, "TSTypeParameter");
}
tsTryParseTypeParameters(parseModifiers) {
if (this.match(47)) {
return this.tsParseTypeParameters(parseModifiers);
}
}
tsParseTypeParameters(parseModifiers) {
const node = this.startNode();
if (this.match(47) || this.match(143)) {
this.next();
} else {
this.unexpected();
}
const refTrailingCommaPos = {
value: -1
};
node.params = this.tsParseBracketedList("TypeParametersOrArguments", this.tsParseTypeParameter.bind(this, parseModifiers), false, true, refTrailingCommaPos);
if (node.params.length === 0) {
this.raise(TSErrors.EmptyTypeParameters, node);
}
if (refTrailingCommaPos.value !== -1) {
this.addExtra(node, "trailingComma", refTrailingCommaPos.value);
}
return this.finishNode(node, "TSTypeParameterDeclaration");
}
tsFillSignature(returnToken, signature) {
const returnTokenRequired = returnToken === 19;
const paramsKey = "parameters";
const returnTypeKey = "typeAnnotation";
signature.typeParameters = this.tsTryParseTypeParameters(this.tsParseConstModifier);
this.expect(10);
signature[paramsKey] = this.tsParseBindingListForSignature();
if (returnTokenRequired) {
signature[returnTypeKey] = this.tsParseTypeOrTypePredicateAnnotation(returnToken);
} else if (this.match(returnToken)) {
signature[returnTypeKey] = this.tsParseTypeOrTypePredicateAnnotation(returnToken);
}
}
tsParseBindingListForSignature() {
const list = super.parseBindingList(11, 41, 2);
for (const pattern of list) {
const {
type
} = pattern;
if (type === "AssignmentPattern" || type === "TSParameterProperty") {
this.raise(TSErrors.UnsupportedSignatureParameterKind, pattern, {
type
});
}
}
return list;
}
tsParseTypeMemberSemicolon() {
if (!this.eat(12) && !this.isLineTerminator()) {
this.expect(13);
}
}
tsParseSignatureMember(kind, node) {
this.tsFillSignature(14, node);
this.tsParseTypeMemberSemicolon();
return this.finishNode(node, kind);
}
tsIsUnambiguouslyIndexSignature() {
this.next();
if (tokenIsIdentifier(this.state.type)) {
this.next();
return this.match(14);
}
return false;
}
tsTryParseIndexSignature(node) {
if (!(this.match(0) && this.tsLookAhead(this.tsIsUnambiguouslyIndexSignature.bind(this)))) {
return;
}
this.expect(0);
const id = this.parseIdentifier();
id.typeAnnotation = this.tsParseTypeAnnotation();
this.resetEndLocation(id);
this.expect(3);
node.parameters = [id];
const type = this.tsTryParseTypeAnnotation();
if (type) node.typeAnnotation = type;
this.tsParseTypeMemberSemicolon();
return this.finishNode(node, "TSIndexSignature");
}
tsParsePropertyOrMethodSignature(node, readonly) {
if (this.eat(17)) node.optional = true;
const nodeAny = node;
if (this.match(10) || this.match(47)) {
if (readonly) {
this.raise(TSErrors.ReadonlyForMethodSignature, node);
}
const method = nodeAny;
if (method.kind && this.match(47)) {
this.raise(TSErrors.AccessorCannotHaveTypeParameters, this.state.curPosition());
}
this.tsFillSignature(14, method);
this.tsParseTypeMemberSemicolon();
const paramsKey = "parameters";
const returnTypeKey = "typeAnnotation";
if (method.kind === "get") {
if (method[paramsKey].length > 0) {
this.raise(Errors.BadGetterArity, this.state.curPosition());
if (this.isThisParam(method[paramsKey][0])) {
this.raise(TSErrors.AccessorCannotDeclareThisParameter, this.state.curPosition());
}
}
} else if (method.kind === "set") {
if (method[paramsKey].length !== 1) {
this.raise(Errors.BadSetterArity, this.state.curPosition());
} else {
const firstParameter = method[paramsKey][0];
if (this.isThisParam(firstParameter)) {
this.raise(TSErrors.AccessorCannotDeclareThisParameter, this.state.curPosition());
}
if (firstParameter.type === "Identifier" && firstParameter.optional) {
this.raise(TSErrors.SetAccessorCannotHaveOptionalParameter, this.state.curPosition());
}
if (firstParameter.type === "RestElement") {
this.raise(TSErrors.SetAccessorCannotHaveRestParameter, this.state.curPosition());
}
}
if (method[returnTypeKey]) {
this.raise(TSErrors.SetAccessorCannotHaveReturnType, method[returnTypeKey]);
}
} else {
method.kind = "method";
}
return this.finishNode(method, "TSMethodSignature");
} else {
const property = nodeAny;
if (readonly) property.readonly = true;
const type = this.tsTryParseTypeAnnotation();
if (type) property.typeAnnotation = type;
this.tsParseTypeMemberSemicolon();
return this.finishNode(property, "TSPropertySignature");
}
}
tsParseTypeMember() {
const node = this.startNode();
if (this.match(10) || this.match(47)) {
return this.tsParseSignatureMember("TSCallSignatureDeclaration", node);
}
if (this.match(77)) {
const id = this.startNode();
this.next();
if (this.match(10) || this.match(47)) {
return this.tsParseSignatureMember("TSConstructSignatureDeclaration", node);
} else {
node.key = this.createIdentifier(id, "new");
return this.tsParsePropertyOrMethodSignature(node, false);
}
}
this.tsParseModifiers({
allowedModifiers: ["readonly"],
disallowedModifiers: ["declare", "abstract", "private", "protected", "public", "static", "override"]
}, node);
const idx = this.tsTryParseIndexSignature(node);
if (idx) {
return idx;
}
super.parsePropertyName(node);
if (!node.computed && node.key.type === "Identifier" && (node.key.name === "get" || node.key.name === "set") && this.tsTokenCanFollowModifier()) {
node.kind = node.key.name;
super.parsePropertyName(node);
}
return this.tsParsePropertyOrMethodSignature(node, !!node.readonly);
}
tsParseTypeLiteral() {
const node = this.startNode();
node.members = this.tsParseObjectTypeMembers();
return this.finishNode(node, "TSTypeLiteral");
}
tsParseObjectTypeMembers() {
this.expect(5);
const members = this.tsParseList("TypeMembers", this.tsParseTypeMember.bind(this));
this.expect(8);
return members;
}
tsIsStartOfMappedType() {
this.next();
if (this.eat(53)) {
return this.isContextual(122);
}
if (this.isContextual(122)) {
this.next();
}
if (!this.match(0)) {
return false;
}
this.next();
if (!this.tsIsIdentifier()) {
return false;
}
this.next();
return this.match(58);
}
tsParseMappedType() {
const node = this.startNode();
this.expect(5);
if (this.match(53)) {
node.readonly = this.state.value;
this.next();
this.expectContextual(122);
} else if (this.eatContextual(122)) {
node.readonly = true;
}
this.expect(0);
{
const typeParameter = this.startNode();
typeParameter.name = this.tsParseTypeParameterName();
typeParameter.constraint = this.tsExpectThenParseType(58);
node.typeParameter = this.finishNode(typeParameter, "TSTypeParameter");
}
node.nameType = this.eatContextual(93) ? this.tsParseType() : null;
this.expect(3);
if (this.match(53)) {
node.optional = this.state.value;
this.next();
this.expect(17);
} else if (this.eat(17)) {
node.optional = true;
}
node.typeAnnotation = this.tsTryParseType();
this.semicolon();
this.expect(8);
return this.finishNode(node, "TSMappedType");
}
tsParseTupleType() {
const node = this.startNode();
node.elementTypes = this.tsParseBracketedList("TupleElementTypes", this.tsParseTupleElementType.bind(this), true, false);
let seenOptionalElement = false;
node.elementTypes.forEach(elementNode => {
const {
type
} = elementNode;
if (seenOptionalElement && type !== "TSRestType" && type !== "TSOptionalType" && !(type === "TSNamedTupleMember" && elementNode.optional)) {
this.raise(TSErrors.OptionalTypeBeforeRequired, elementNode);
}
seenOptionalElement || (seenOptionalElement = type === "TSNamedTupleMember" && elementNode.optional || type === "TSOptionalType");
});
return this.finishNode(node, "TSTupleType");
}
tsParseTupleElementType() {
const restStartLoc = this.state.startLoc;
const rest = this.eat(21);
const {
startLoc
} = this.state;
let labeled;
let label;
let optional;
let type;
const isWord = tokenIsKeywordOrIdentifier(this.state.type);
const chAfterWord = isWord ? this.lookaheadCharCode() : null;
if (chAfterWord === 58) {
labeled = true;
optional = false;
label = this.parseIdentifier(true);
this.expect(14);
type = this.tsParseType();
} else if (chAfterWord === 63) {
optional = true;
const wordName = this.state.value;
const typeOrLabel = this.tsParseNonArrayType();
if (this.lookaheadCharCode() === 58) {
labeled = true;
label = this.createIdentifier(this.startNodeAt(startLoc), wordName);
this.expect(17);
this.expect(14);
type = this.tsParseType();
} else {
labeled = false;
type = typeOrLabel;
this.expect(17);
}
} else {
type = this.tsParseType();
optional = this.eat(17);
labeled = this.eat(14);
}
if (labeled) {
let labeledNode;
if (label) {
labeledNode = this.startNodeAt(startLoc);
labeledNode.optional = optional;
labeledNode.label = label;
labeledNode.elementType = type;
if (this.eat(17)) {
labeledNode.optional = true;
this.raise(TSErrors.TupleOptionalAfterType, this.state.lastTokStartLoc);
}
} else {
labeledNode = this.startNodeAt(startLoc);
labeledNode.optional = optional;
this.raise(TSErrors.InvalidTupleMemberLabel, type);
labeledNode.label = type;
labeledNode.elementType = this.tsParseType();
}
type = this.finishNode(labeledNode, "TSNamedTupleMember");
} else if (optional) {
const optionalTypeNode = this.startNodeAt(startLoc);
optionalTypeNode.typeAnnotation = type;
type = this.finishNode(optionalTypeNode, "TSOptionalType");
}
if (rest) {
const restNode = this.startNodeAt(restStartLoc);
restNode.typeAnnotation = type;
type = this.finishNode(restNode, "TSRestType");
}
return type;
}
tsParseParenthesizedType() {
const node = this.startNode();
this.expect(10);
node.typeAnnotation = this.tsParseType();
this.expect(11);
return this.finishNode(node, "TSParenthesizedType");
}
tsParseFunctionOrConstructorType(type, abstract) {
const node = this.startNode();
if (type === "TSConstructorType") {
node.abstract = !!abstract;
if (abstract) this.next();
this.next();
}
this.tsInAllowConditionalTypesContext(() => this.tsFillSignature(19, node));
return this.finishNode(node, type);
}
tsParseLiteralTypeNode() {
const node = this.startNode();
switch (this.state.type) {
case 135:
case 136:
case 134:
case 85:
case 86:
node.literal = super.parseExprAtom();
break;
default:
this.unexpected();
}
return this.finishNode(node, "TSLiteralType");
}
tsParseTemplateLiteralType() {
{
const node = this.startNode();
node.literal = super.parseTemplate(false);
return this.finishNode(node, "TSLiteralType");
}
}
parseTemplateSubstitution() {
if (this.state.inType) return this.tsParseType();
return super.parseTemplateSubstitution();
}
tsParseThisTypeOrThisTypePredicate() {
const thisKeyword = this.tsParseThisTypeNode();
if (this.isContextual(116) && !this.hasPrecedingLineBreak()) {
return this.tsParseThisTypePredicate(thisKeyword);
} else {
return thisKeyword;
}
}
tsParseNonArrayType() {
switch (this.state.type) {
case 134:
case 135:
case 136:
case 85:
case 86:
return this.tsParseLiteralTypeNode();
case 53:
if (this.state.value === "-") {
const node = this.startNode();
const nextToken = this.lookahead();
if (nextToken.type !== 135 && nextToken.type !== 136) {
this.unexpected();
}
node.literal = this.parseMaybeUnary();
return this.finishNode(node, "TSLiteralType");
}
break;
case 78:
return this.tsParseThisTypeOrThisTypePredicate();
case 87:
return this.tsParseTypeQuery();
case 83:
return this.tsParseImportType();
case 5:
return this.tsLookAhead(this.tsIsStartOfMappedType.bind(this)) ? this.tsParseMappedType() : this.tsParseTypeLiteral();
case 0:
return this.tsParseTupleType();
case 10:
return this.tsParseParenthesizedType();
case 25:
case 24:
return this.tsParseTemplateLiteralType();
default:
{
const {
type
} = this.state;
if (tokenIsIdentifier(type) || type === 88 || type === 84) {
const nodeType = type === 88 ? "TSVoidKeyword" : type === 84 ? "TSNullKeyword" : keywordTypeFromName(this.state.value);
if (nodeType !== undefined && this.lookaheadCharCode() !== 46) {
const node = this.startNode();
this.next();
return this.finishNode(node, nodeType);
}
return this.tsParseTypeReference();
}
}
}
this.unexpected();
}
tsParseArrayTypeOrHigher() {
const {
startLoc
} = this.state;
let type = this.tsParseNonArrayType();
while (!this.hasPrecedingLineBreak() && this.eat(0)) {
if (this.match(3)) {
const node = this.startNodeAt(startLoc);
node.elementType = type;
this.expect(3);
type = this.finishNode(node, "TSArrayType");
} else {
const node = this.startNodeAt(startLoc);
node.objectType = type;
node.indexType = this.tsParseType();
this.expect(3);
type = this.finishNode(node, "TSIndexedAccessType");
}
}
return type;
}
tsParseTypeOperator() {
const node = this.startNode();
const operator = this.state.value;
this.next();
node.operator = operator;
node.typeAnnotation = this.tsParseTypeOperatorOrHigher();
if (operator === "readonly") {
this.tsCheckTypeAnnotationForReadOnly(node);
}
return this.finishNode(node, "TSTypeOperator");
}
tsCheckTypeAnnotationForReadOnly(node) {
switch (node.typeAnnotation.type) {
case "TSTupleType":
case "TSArrayType":
return;
default:
this.raise(TSErrors.UnexpectedReadonly, node);
}
}
tsParseInferType() {
const node = this.startNode();
this.expectContextual(115);
const typeParameter = this.startNode();
typeParameter.name = this.tsParseTypeParameterName();
typeParameter.constraint = this.tsTryParse(() => this.tsParseConstraintForInferType());
node.typeParameter = this.finishNode(typeParameter, "TSTypeParameter");
return this.finishNode(node, "TSInferType");
}
tsParseConstraintForInferType() {
if (this.eat(81)) {
const constraint = this.tsInDisallowConditionalTypesContext(() => this.tsParseType());
if (this.state.inDisallowConditionalTypesContext || !this.match(17)) {
return constraint;
}
}
}
tsParseTypeOperatorOrHigher() {
const isTypeOperator = tokenIsTSTypeOperator(this.state.type) && !this.state.containsEsc;
return isTypeOperator ? this.tsParseTypeOperator() : this.isContextual(115) ? this.tsParseInferType() : this.tsInAllowConditionalTypesContext(() => this.tsParseArrayTypeOrHigher());
}
tsParseUnionOrIntersectionType(kind, parseConstituentType, operator) {
const node = this.startNode();
const hasLeadingOperator = this.eat(operator);
const types = [];
do {
types.push(parseConstituentType());
} while (this.eat(operator));
if (types.length === 1 && !hasLeadingOperator) {
return types[0];
}
node.types = types;
return this.finishNode(node, kind);
}
tsParseIntersectionTypeOrHigher() {
return this.tsParseUnionOrIntersectionType("TSIntersectionType", this.tsParseTypeOperatorOrHigher.bind(this), 45);
}
tsParseUnionTypeOrHigher() {
return this.tsParseUnionOrIntersectionType("TSUnionType", this.tsParseIntersectionTypeOrHigher.bind(this), 43);
}
tsIsStartOfFunctionType() {
if (this.match(47)) {
return true;
}
return this.match(10) && this.tsLookAhead(this.tsIsUnambiguouslyStartOfFunctionType.bind(this));
}
tsSkipParameterStart() {
if (tokenIsIdentifier(this.state.type) || this.match(78)) {
this.next();
return true;
}
if (this.match(5)) {
const {
errors
} = this.state;
const previousErrorCount = errors.length;
try {
this.parseObjectLike(8, true);
return errors.length === previousErrorCount;
} catch (_unused) {
return false;
}
}
if (this.match(0)) {
this.next();
const {
errors
} = this.state;
const previousErrorCount = errors.length;
try {
super.parseBindingList(3, 93, 1);
return errors.length === previousErrorCount;
} catch (_unused2) {
return false;
}
}
return false;
}
tsIsUnambiguouslyStartOfFunctionType() {
this.next();
if (this.match(11) || this.match(21)) {
return true;
}
if (this.tsSkipParameterStart()) {
if (this.match(14) || this.match(12) || this.match(17) || this.match(29)) {
return true;
}
if (this.match(11)) {
this.next();
if (this.match(19)) {
return true;
}
}
}
return false;
}
tsParseTypeOrTypePredicateAnnotation(returnToken) {
return this.tsInType(() => {
const t = this.startNode();
this.expect(returnToken);
const node = this.startNode();
const asserts = !!this.tsTryParse(this.tsParseTypePredicateAsserts.bind(this));
if (asserts && this.match(78)) {
let thisTypePredicate = this.tsParseThisTypeOrThisTypePredicate();
if (thisTypePredicate.type === "TSThisType") {
node.parameterName = thisTypePredicate;
node.asserts = true;
node.typeAnnotation = null;
thisTypePredicate = this.finishNode(node, "TSTypePredicate");
} else {
this.resetStartLocationFromNode(thisTypePredicate, node);
thisTypePredicate.asserts = true;
}
t.typeAnnotation = thisTypePredicate;
return this.finishNode(t, "TSTypeAnnotation");
}
const typePredicateVariable = this.tsIsIdentifier() && this.tsTryParse(this.tsParseTypePredicatePrefix.bind(this));
if (!typePredicateVariable) {
if (!asserts) {
return this.tsParseTypeAnnotation(false, t);
}
node.parameterName = this.parseIdentifier();
node.asserts = asserts;
node.typeAnnotation = null;
t.typeAnnotation = this.finishNode(node, "TSTypePredicate");
return this.finishNode(t, "TSTypeAnnotation");
}
const type = this.tsParseTypeAnnotation(false);
node.parameterName = typePredicateVariable;
node.typeAnnotation = type;
node.asserts = asserts;
t.typeAnnotation = this.finishNode(node, "TSTypePredicate");
return this.finishNode(t, "TSTypeAnnotation");
});
}
tsTryParseTypeOrTypePredicateAnnotation() {
if (this.match(14)) {
return this.tsParseTypeOrTypePredicateAnnotation(14);
}
}
tsTryParseTypeAnnotation() {
if (this.match(14)) {
return this.tsParseTypeAnnotation();
}
}
tsTryParseType() {
return this.tsEatThenParseType(14);
}
tsParseTypePredicatePrefix() {
const id = this.parseIdentifier();
if (this.isContextual(116) && !this.hasPrecedingLineBreak()) {
this.next();
return id;
}
}
tsParseTypePredicateAsserts() {
if (this.state.type !== 109) {
return false;
}
const containsEsc = this.state.containsEsc;
this.next();
if (!tokenIsIdentifier(this.state.type) && !this.match(78)) {
return false;
}
if (containsEsc) {
this.raise(Errors.InvalidEscapedReservedWord, this.state.lastTokStartLoc, {
reservedWord: "asserts"
});
}
return true;
}
tsParseTypeAnnotation(eatColon = true, t = this.startNode()) {
this.tsInType(() => {
if (eatColon) this.expect(14);
t.typeAnnotation = this.tsParseType();
});
return this.finishNode(t, "TSTypeAnnotation");
}
tsParseType() {
assert(this.state.inType);
const type = this.tsParseNonConditionalType();
if (this.state.inDisallowConditionalTypesContext || this.hasPrecedingLineBreak() || !this.eat(81)) {
return type;
}
const node = this.startNodeAtNode(type);
node.checkType = type;
node.extendsType = this.tsInDisallowConditionalTypesContext(() => this.tsParseNonConditionalType());
this.expect(17);
node.trueType = this.tsInAllowConditionalTypesContext(() => this.tsParseType());
this.expect(14);
node.falseType = this.tsInAllowConditionalTypesContext(() => this.tsParseType());
return this.finishNode(node, "TSConditionalType");
}
isAbstractConstructorSignature() {
return this.isContextual(124) && this.lookahead().type === 77;
}
tsParseNonConditionalType() {
if (this.tsIsStartOfFunctionType()) {
return this.tsParseFunctionOrConstructorType("TSFunctionType");
}
if (this.match(77)) {
return this.tsParseFunctionOrConstructorType("TSConstructorType");
} else if (this.isAbstractConstructorSignature()) {
return this.tsParseFunctionOrConstructorType("TSConstructorType", true);
}
return this.tsParseUnionTypeOrHigher();
}
tsParseTypeAssertion() {
if (this.getPluginOption("typescript", "disallowAmbiguousJSXLike")) {
this.raise(TSErrors.ReservedTypeAssertion, this.state.startLoc);
}
const node = this.startNode();
node.typeAnnotation = this.tsInType(() => {
this.next();
return this.match(75) ? this.tsParseTypeReference() : this.tsParseType();
});
this.expect(48);
node.expression = this.parseMaybeUnary();
return this.finishNode(node, "TSTypeAssertion");
}
tsParseHeritageClause(token) {
const originalStartLoc = this.state.startLoc;
const delimitedList = this.tsParseDelimitedList("HeritageClauseElement", () => {
{
const node = this.startNode();
node.expression = this.tsParseEntityName(1 | 2);
if (this.match(47)) {
node.typeParameters = this.tsParseTypeArguments();
}
return this.finishNode(node, "TSExpressionWithTypeArguments");
}
});
if (!delimitedList.length) {
this.raise(TSErrors.EmptyHeritageClauseType, originalStartLoc, {
token
});
}
return delimitedList;
}
tsParseInterfaceDeclaration(node, properties = {}) {
if (this.hasFollowingLineBreak()) return null;
this.expectContextual(129);
if (properties.declare) node.declare = true;
if (tokenIsIdentifier(this.state.type)) {
node.id = this.parseIdentifier();
this.checkIdentifier(node.id, 130);
} else {
node.id = null;
this.raise(TSErrors.MissingInterfaceName, this.state.startLoc);
}
node.typeParameters = this.tsTryParseTypeParameters(this.tsParseInOutConstModifiers);
if (this.eat(81)) {
node.extends = this.tsParseHeritageClause("extends");
}
const body = this.startNode();
body.body = this.tsInType(this.tsParseObjectTypeMembers.bind(this));
node.body = this.finishNode(body, "TSInterfaceBody");
return this.finishNode(node, "TSInterfaceDeclaration");
}
tsParseTypeAliasDeclaration(node) {
node.id = this.parseIdentifier();
this.checkIdentifier(node.id, 2);
node.typeAnnotation = this.tsInType(() => {
node.typeParameters = this.tsTryParseTypeParameters(this.tsParseInOutModifiers);
this.expect(29);
if (this.isContextual(114) && this.lookahead().type !== 16) {
const node = this.startNode();
this.next();
return this.finishNode(node, "TSIntrinsicKeyword");
}
return this.tsParseType();
});
this.semicolon();
return this.finishNode(node, "TSTypeAliasDeclaration");
}
tsInTopLevelContext(cb) {
if (this.curContext() !== types.brace) {
const oldContext = this.state.context;
this.state.context = [oldContext[0]];
try {
return cb();
} finally {
this.state.context = oldContext;
}
} else {
return cb();
}
}
tsInType(cb) {
const oldInType = this.state.inType;
this.state.inType = true;
try {
return cb();
} finally {
this.state.inType = oldInType;
}
}
tsInDisallowConditionalTypesContext(cb) {
const oldInDisallowConditionalTypesContext = this.state.inDisallowConditionalTypesContext;
this.state.inDisallowConditionalTypesContext = true;
try {
return cb();
} finally {
this.state.inDisallowConditionalTypesContext = oldInDisallowConditionalTypesContext;
}
}
tsInAllowConditionalTypesContext(cb) {
const oldInDisallowConditionalTypesContext = this.state.inDisallowConditionalTypesContext;
this.state.inDisallowConditionalTypesContext = false;
try {
return cb();
} finally {
this.state.inDisallowConditionalTypesContext = oldInDisallowConditionalTypesContext;
}
}
tsEatThenParseType(token) {
if (this.match(token)) {
return this.tsNextThenParseType();
}
}
tsExpectThenParseType(token) {
return this.tsInType(() => {
this.expect(token);
return this.tsParseType();
});
}
tsNextThenParseType() {
return this.tsInType(() => {
this.next();
return this.tsParseType();
});
}
tsParseEnumMember() {
const node = this.startNode();
node.id = this.match(134) ? super.parseStringLiteral(this.state.value) : this.parseIdentifier(true);
if (this.eat(29)) {
node.initializer = super.parseMaybeAssignAllowIn();
}
return this.finishNode(node, "TSEnumMember");
}
tsParseEnumDeclaration(node, properties = {}) {
if (properties.const) node.const = true;
if (properties.declare) node.declare = true;
this.expectContextual(126);
node.id = this.parseIdentifier();
this.checkIdentifier(node.id, node.const ? 8971 : 8459);
{
this.expect(5);
node.members = this.tsParseDelimitedList("EnumMembers", this.tsParseEnumMember.bind(this));
this.expect(8);
}
return this.finishNode(node, "TSEnumDeclaration");
}
tsParseEnumBody() {
const node = this.startNode();
this.expect(5);
node.members = this.tsParseDelimitedList("EnumMembers", this.tsParseEnumMember.bind(this));
this.expect(8);
return this.finishNode(node, "TSEnumBody");
}
tsParseModuleBlock() {
const node = this.startNode();
this.scope.enter(0);
this.expect(5);
super.parseBlockOrModuleBlockBody(node.body = [], undefined, true, 8);
this.scope.exit();
return this.finishNode(node, "TSModuleBlock");
}
tsParseModuleOrNamespaceDeclaration(node, nested = false) {
node.id = this.parseIdentifier();
if (!nested) {
this.checkIdentifier(node.id, 1024);
}
if (this.eat(16)) {
const inner = this.startNode();
this.tsParseModuleOrNamespaceDeclaration(inner, true);
node.body = inner;
} else {
this.scope.enter(256);
this.prodParam.enter(0);
node.body = this.tsParseModuleBlock();
this.prodParam.exit();
this.scope.exit();
}
return this.finishNode(node, "TSModuleDeclaration");
}
tsParseAmbientExternalModuleDeclaration(node) {
if (this.isContextual(112)) {
node.kind = "global";
{
node.global = true;
}
node.id = this.parseIdentifier();
} else if (this.match(134)) {
node.kind = "module";
node.id = super.parseStringLiteral(this.state.value);
} else {
this.unexpected();
}
if (this.match(5)) {
this.scope.enter(256);
this.prodParam.enter(0);
node.body = this.tsParseModuleBlock();
this.prodParam.exit();
this.scope.exit();
} else {
this.semicolon();
}
return this.finishNode(node, "TSModuleDeclaration");
}
tsParseImportEqualsDeclaration(node, maybeDefaultIdentifier, isExport) {
{
node.isExport = isExport || false;
}
node.id = maybeDefaultIdentifier || this.parseIdentifier();
this.checkIdentifier(node.id, 4096);
this.expect(29);
const moduleReference = this.tsParseModuleReference();
if (node.importKind === "type" && moduleReference.type !== "TSExternalModuleReference") {
this.raise(TSErrors.ImportAliasHasImportType, moduleReference);
}
node.moduleReference = moduleReference;
this.semicolon();
return this.finishNode(node, "TSImportEqualsDeclaration");
}
tsIsExternalModuleReference() {
return this.isContextual(119) && this.lookaheadCharCode() === 40;
}
tsParseModuleReference() {
return this.tsIsExternalModuleReference() ? this.tsParseExternalModuleReference() : this.tsParseEntityName(0);
}
tsParseExternalModuleReference() {
const node = this.startNode();
this.expectContextual(119);
this.expect(10);
if (!this.match(134)) {
this.unexpected();
}
node.expression = super.parseExprAtom();
this.expect(11);
this.sawUnambiguousESM = true;
return this.finishNode(node, "TSExternalModuleReference");
}
tsLookAhead(f) {
const state = this.state.clone();
const res = f();
this.state = state;
return res;
}
tsTryParseAndCatch(f) {
const result = this.tryParse(abort => f() || abort());
if (result.aborted || !result.node) return;
if (result.error) this.state = result.failState;
return result.node;
}
tsTryParse(f) {
const state = this.state.clone();
const result = f();
if (result !== undefined && result !== false) {
return result;
}
this.state = state;
}
tsTryParseDeclare(nany) {
if (this.isLineTerminator()) {
return;
}
let startType = this.state.type;
let kind;
if (this.isContextual(100)) {
startType = 74;
kind = "let";
}
return this.tsInAmbientContext(() => {
switch (startType) {
case 68:
nany.declare = true;
return super.parseFunctionStatement(nany, false, false);
case 80:
nany.declare = true;
return this.parseClass(nany, true, false);
case 126:
return this.tsParseEnumDeclaration(nany, {
declare: true
});
case 112:
return this.tsParseAmbientExternalModuleDeclaration(nany);
case 75:
case 74:
if (!this.match(75) || !this.isLookaheadContextual("enum")) {
nany.declare = true;
return this.parseVarStatement(nany, kind || this.state.value, true);
}
this.expect(75);
return this.tsParseEnumDeclaration(nany, {
const: true,
declare: true
});
case 129:
{
const result = this.tsParseInterfaceDeclaration(nany, {
declare: true
});
if (result) return result;
}
default:
if (tokenIsIdentifier(startType)) {
return this.tsParseDeclaration(nany, this.state.value, true, null);
}
}
});
}
tsTryParseExportDeclaration() {
return this.tsParseDeclaration(this.startNode(), this.state.value, true, null);
}
tsParseExpressionStatement(node, expr, decorators) {
switch (expr.name) {
case "declare":
{
const declaration = this.tsTryParseDeclare(node);
if (declaration) {
declaration.declare = true;
}
return declaration;
}
case "global":
if (this.match(5)) {
this.scope.enter(256);
this.prodParam.enter(0);
const mod = node;
mod.kind = "global";
{
node.global = true;
}
mod.id = expr;
mod.body = this.tsParseModuleBlock();
this.scope.exit();
this.prodParam.exit();
return this.finishNode(mod, "TSModuleDeclaration");
}
break;
default:
return this.tsParseDeclaration(node, expr.name, false, decorators);
}
}
tsParseDeclaration(node, value, next, decorators) {
switch (value) {
case "abstract":
if (this.tsCheckLineTerminator(next) && (this.match(80) || tokenIsIdentifier(this.state.type))) {
return this.tsParseAbstractDeclaration(node, decorators);
}
break;
case "module":
if (this.tsCheckLineTerminator(next)) {
if (this.match(134)) {
return this.tsParseAmbientExternalModuleDeclaration(node);
} else if (tokenIsIdentifier(this.state.type)) {
node.kind = "module";
return this.tsParseModuleOrNamespaceDeclaration(node);
}
}
break;
case "namespace":
if (this.tsCheckLineTerminator(next) && tokenIsIdentifier(this.state.type)) {
node.kind = "namespace";
return this.tsParseModuleOrNamespaceDeclaration(node);
}
break;
case "type":
if (this.tsCheckLineTerminator(next) && tokenIsIdentifier(this.state.type)) {
return this.tsParseTypeAliasDeclaration(node);
}
break;
}
}
tsCheckLineTerminator(next) {
if (next) {
if (this.hasFollowingLineBreak()) return false;
this.next();
return true;
}
return !this.isLineTerminator();
}
tsTryParseGenericAsyncArrowFunction(startLoc) {
if (!this.match(47)) return;
const oldMaybeInArrowParameters = this.state.maybeInArrowParameters;
this.state.maybeInArrowParameters = true;
const res = this.tsTryParseAndCatch(() => {
const node = this.startNodeAt(startLoc);
node.typeParameters = this.tsParseTypeParameters(this.tsParseConstModifier);
super.parseFunctionParams(node);
node.returnType = this.tsTryParseTypeOrTypePredicateAnnotation();
this.expect(19);
return node;
});
this.state.maybeInArrowParameters = oldMaybeInArrowParameters;
if (!res) return;
return super.parseArrowExpression(res, null, true);
}
tsParseTypeArgumentsInExpression() {
if (this.reScan_lt() !== 47) return;
return this.tsParseTypeArguments();
}
tsParseTypeArguments() {
const node = this.startNode();
node.params = this.tsInType(() => this.tsInTopLevelContext(() => {
this.expect(47);
return this.tsParseDelimitedList("TypeParametersOrArguments", this.tsParseType.bind(this));
}));
if (node.params.length === 0) {
this.raise(TSErrors.EmptyTypeArguments, node);
} else if (!this.state.inType && this.curContext() === types.brace) {
this.reScan_lt_gt();
}
this.expect(48);
return this.finishNode(node, "TSTypeParameterInstantiation");
}
tsIsDeclarationStart() {
return tokenIsTSDeclarationStart(this.state.type);
}
isExportDefaultSpecifier() {
if (this.tsIsDeclarationStart()) return false;
return super.isExportDefaultSpecifier();
}
parseBindingElement(flags, decorators) {
const startLoc = this.state.startLoc;
const modified = {};
this.tsParseModifiers({
allowedModifiers: ["public", "private", "protected", "override", "readonly"]
}, modified);
const accessibility = modified.accessibility;
const override = modified.override;
const readonly = modified.readonly;
if (!(flags & 4) && (accessibility || readonly || override)) {
this.raise(TSErrors.UnexpectedParameterModifier, startLoc);
}
const left = this.parseMaybeDefault();
if (flags & 2) {
this.parseFunctionParamType(left);
}
const elt = this.parseMaybeDefault(left.loc.start, left);
if (accessibility || readonly || override) {
const pp = this.startNodeAt(startLoc);
if (decorators.length) {
pp.decorators = decorators;
}
if (accessibility) pp.accessibility = accessibility;
if (readonly) pp.readonly = readonly;
if (override) pp.override = override;
if (elt.type !== "Identifier" && elt.type !== "AssignmentPattern") {
this.raise(TSErrors.UnsupportedParameterPropertyKind, pp);
}
pp.parameter = elt;
return this.finishNode(pp, "TSParameterProperty");
}
if (decorators.length) {
left.decorators = decorators;
}
return elt;
}
isSimpleParameter(node) {
return node.type === "TSParameterProperty" && super.isSimpleParameter(node.parameter) || super.isSimpleParameter(node);
}
tsDisallowOptionalPattern(node) {
for (const param of node.params) {
if (param.type !== "Identifier" && param.optional && !this.state.isAmbientContext) {
this.raise(TSErrors.PatternIsOptional, param);
}
}
}
setArrowFunctionParameters(node, params, trailingCommaLoc) {
super.setArrowFunctionParameters(node, params, trailingCommaLoc);
this.tsDisallowOptionalPattern(node);
}
parseFunctionBodyAndFinish(node, type, isMethod = false) {
if (this.match(14)) {
node.returnType = this.tsParseTypeOrTypePredicateAnnotation(14);
}
const bodilessType = type === "FunctionDeclaration" ? "TSDeclareFunction" : type === "ClassMethod" || type === "ClassPrivateMethod" ? "TSDeclareMethod" : undefined;
if (bodilessType && !this.match(5) && this.isLineTerminator()) {
return this.finishNode(node, bodilessType);
}
if (bodilessType === "TSDeclareFunction" && this.state.isAmbientContext) {
this.raise(TSErrors.DeclareFunctionHasImplementation, node);
if (node.declare) {
return super.parseFunctionBodyAndFinish(node, bodilessType, isMethod);
}
}
this.tsDisallowOptionalPattern(node);
return super.parseFunctionBodyAndFinish(node, type, isMethod);
}
registerFunctionStatementId(node) {
if (!node.body && node.id) {
this.checkIdentifier(node.id, 1024);
} else {
super.registerFunctionStatementId(node);
}
}
tsCheckForInvalidTypeCasts(items) {
items.forEach(node => {
if ((node == null ? void 0 : node.type) === "TSTypeCastExpression") {
this.raise(TSErrors.UnexpectedTypeAnnotation, node.typeAnnotation);
}
});
}
toReferencedList(exprList, isInParens) {
this.tsCheckForInvalidTypeCasts(exprList);
return exprList;
}
parseArrayLike(close, canBePattern, isTuple, refExpressionErrors) {
const node = super.parseArrayLike(close, canBePattern, isTuple, refExpressionErrors);
if (node.type === "ArrayExpression") {
this.tsCheckForInvalidTypeCasts(node.elements);
}
return node;
}
parseSubscript(base, startLoc, noCalls, state) {
if (!this.hasPrecedingLineBreak() && this.match(35)) {
this.state.canStartJSXElement = false;
this.next();
const nonNullExpression = this.startNodeAt(startLoc);
nonNullExpression.expression = base;
return this.finishNode(nonNullExpression, "TSNonNullExpression");
}
let isOptionalCall = false;
if (this.match(18) && this.lookaheadCharCode() === 60) {
if (noCalls) {
state.stop = true;
return base;
}
state.optionalChainMember = isOptionalCall = true;
this.next();
}
if (this.match(47) || this.match(51)) {
let missingParenErrorLoc;
const result = this.tsTryParseAndCatch(() => {
if (!noCalls && this.atPossibleAsyncArrow(base)) {
const asyncArrowFn = this.tsTryParseGenericAsyncArrowFunction(startLoc);
if (asyncArrowFn) {
return asyncArrowFn;
}
}
const typeArguments = this.tsParseTypeArgumentsInExpression();
if (!typeArguments) return;
if (isOptionalCall && !this.match(10)) {
missingParenErrorLoc = this.state.curPosition();
return;
}
if (tokenIsTemplate(this.state.type)) {
const result = super.parseTaggedTemplateExpression(base, startLoc, state);
{
result.typeParameters = typeArguments;
}
return result;
}
if (!noCalls && this.eat(10)) {
const node = this.startNodeAt(startLoc);
node.callee = base;
node.arguments = this.parseCallExpressionArguments(11);
this.tsCheckForInvalidTypeCasts(node.arguments);
{
node.typeParameters = typeArguments;
}
if (state.optionalChainMember) {
node.optional = isOptionalCall;
}
return this.finishCallExpression(node, state.optionalChainMember);
}
const tokenType = this.state.type;
if (tokenType === 48 || tokenType === 52 || tokenType !== 10 && tokenCanStartExpression(tokenType) && !this.hasPrecedingLineBreak()) {
return;
}
const node = this.startNodeAt(startLoc);
node.expression = base;
{
node.typeParameters = typeArguments;
}
return this.finishNode(node, "TSInstantiationExpression");
});
if (missingParenErrorLoc) {
this.unexpected(missingParenErrorLoc, 10);
}
if (result) {
if (result.type === "TSInstantiationExpression" && (this.match(16) || this.match(18) && this.lookaheadCharCode() !== 40)) {
this.raise(TSErrors.InvalidPropertyAccessAfterInstantiationExpression, this.state.startLoc);
}
return result;
}
}
return super.parseSubscript(base, startLoc, noCalls, state);
}
parseNewCallee(node) {
var _callee$extra;
super.parseNewCallee(node);
const {
callee
} = node;
if (callee.type === "TSInstantiationExpression" && !((_callee$extra = callee.extra) != null && _callee$extra.parenthesized)) {
{
node.typeParameters = callee.typeParameters;
}
node.callee = callee.expression;
}
}
parseExprOp(left, leftStartLoc, minPrec) {
let isSatisfies;
if (tokenOperatorPrecedence(58) > minPrec && !this.hasPrecedingLineBreak() && (this.isContextual(93) || (isSatisfies = this.isContextual(120)))) {
const node = this.startNodeAt(leftStartLoc);
node.expression = left;
node.typeAnnotation = this.tsInType(() => {
this.next();
if (this.match(75)) {
if (isSatisfies) {
this.raise(Errors.UnexpectedKeyword, this.state.startLoc, {
keyword: "const"
});
}
return this.tsParseTypeReference();
}
return this.tsParseType();
});
this.finishNode(node, isSatisfies ? "TSSatisfiesExpression" : "TSAsExpression");
this.reScan_lt_gt();
return this.parseExprOp(node, leftStartLoc, minPrec);
}
return super.parseExprOp(left, leftStartLoc, minPrec);
}
checkReservedWord(word, startLoc, checkKeywords, isBinding) {
if (!this.state.isAmbientContext) {
super.checkReservedWord(word, startLoc, checkKeywords, isBinding);
}
}
checkImportReflection(node) {
super.checkImportReflection(node);
if (node.module && node.importKind !== "value") {
this.raise(TSErrors.ImportReflectionHasImportType, node.specifiers[0].loc.start);
}
}
checkDuplicateExports() {}
isPotentialImportPhase(isExport) {
if (super.isPotentialImportPhase(isExport)) return true;
if (this.isContextual(130)) {
const ch = this.lookaheadCharCode();
return isExport ? ch === 123 || ch === 42 : ch !== 61;
}
return !isExport && this.isContextual(87);
}
applyImportPhase(node, isExport, phase, loc) {
super.applyImportPhase(node, isExport, phase, loc);
if (isExport) {
node.exportKind = phase === "type" ? "type" : "value";
} else {
node.importKind = phase === "type" || phase === "typeof" ? phase : "value";
}
}
parseImport(node) {
if (this.match(134)) {
node.importKind = "value";
return super.parseImport(node);
}
let importNode;
if (tokenIsIdentifier(this.state.type) && this.lookaheadCharCode() === 61) {
node.importKind = "value";
return this.tsParseImportEqualsDeclaration(node);
} else if (this.isContextual(130)) {
const maybeDefaultIdentifier = this.parseMaybeImportPhase(node, false);
if (this.lookaheadCharCode() === 61) {
return this.tsParseImportEqualsDeclaration(node, maybeDefaultIdentifier);
} else {
importNode = super.parseImportSpecifiersAndAfter(node, maybeDefaultIdentifier);
}
} else {
importNode = super.parseImport(node);
}
if (importNode.importKind === "type" && importNode.specifiers.length > 1 && importNode.specifiers[0].type === "ImportDefaultSpecifier") {
this.raise(TSErrors.TypeImportCannotSpecifyDefaultAndNamed, importNode);
}
return importNode;
}
parseExport(node, decorators) {
if (this.match(83)) {
const nodeImportEquals = node;
this.next();
let maybeDefaultIdentifier = null;
if (this.isContextual(130) && this.isPotentialImportPhase(false)) {
maybeDefaultIdentifier = this.parseMaybeImportPhase(nodeImportEquals, false);
} else {
nodeImportEquals.importKind = "value";
}
const declaration = this.tsParseImportEqualsDeclaration(nodeImportEquals, maybeDefaultIdentifier, true);
{
return declaration;
}
} else if (this.eat(29)) {
const assign = node;
assign.expression = super.parseExpression();
this.semicolon();
this.sawUnambiguousESM = true;
return this.finishNode(assign, "TSExportAssignment");
} else if (this.eatContextual(93)) {
const decl = node;
this.expectContextual(128);
decl.id = this.parseIdentifier();
this.semicolon();
return this.finishNode(decl, "TSNamespaceExportDeclaration");
} else {
return super.parseExport(node, decorators);
}
}
isAbstractClass() {
return this.isContextual(124) && this.lookahead().type === 80;
}
parseExportDefaultExpression() {
if (this.isAbstractClass()) {
const cls = this.startNode();
this.next();
cls.abstract = true;
return this.parseClass(cls, true, true);
}
if (this.match(129)) {
const result = this.tsParseInterfaceDeclaration(this.startNode());
if (result) return result;
}
return super.parseExportDefaultExpression();
}
parseVarStatement(node, kind, allowMissingInitializer = false) {
const {
isAmbientContext
} = this.state;
const declaration = super.parseVarStatement(node, kind, allowMissingInitializer || isAmbientContext);
if (!isAmbientContext) return declaration;
for (const {
id,
init
} of declaration.declarations) {
if (!init) continue;
if (kind !== "const" || !!id.typeAnnotation) {
this.raise(TSErrors.InitializerNotAllowedInAmbientContext, init);
} else if (!isValidAmbientConstInitializer(init, this.hasPlugin("estree"))) {
this.raise(TSErrors.ConstInitializerMustBeStringOrNumericLiteralOrLiteralEnumReference, init);
}
}
return declaration;
}
parseStatementContent(flags, decorators) {
if (this.match(75) && this.isLookaheadContextual("enum")) {
const node = this.startNode();
this.expect(75);
return this.tsParseEnumDeclaration(node, {
const: true
});
}
if (this.isContextual(126)) {
return this.tsParseEnumDeclaration(this.startNode());
}
if (this.isContextual(129)) {
const result = this.tsParseInterfaceDeclaration(this.startNode());
if (result) return result;
}
return super.parseStatementContent(flags, decorators);
}
parseAccessModifier() {
return this.tsParseModifier(["public", "protected", "private"]);
}
tsHasSomeModifiers(member, modifiers) {
return modifiers.some(modifier => {
if (tsIsAccessModifier(modifier)) {
return member.accessibility === modifier;
}
return !!member[modifier];
});
}
tsIsStartOfStaticBlocks() {
return this.isContextual(106) && this.lookaheadCharCode() === 123;
}
parseClassMember(classBody, member, state) {
const modifiers = ["declare", "private", "public", "protected", "override", "abstract", "readonly", "static"];
this.tsParseModifiers({
allowedModifiers: modifiers,
disallowedModifiers: ["in", "out"],
stopOnStartOfClassStaticBlock: true,
errorTemplate: TSErrors.InvalidModifierOnTypeParameterPositions
}, member);
const callParseClassMemberWithIsStatic = () => {
if (this.tsIsStartOfStaticBlocks()) {
this.next();
this.next();
if (this.tsHasSomeModifiers(member, modifiers)) {
this.raise(TSErrors.StaticBlockCannotHaveModifier, this.state.curPosition());
}
super.parseClassStaticBlock(classBody, member);
} else {
this.parseClassMemberWithIsStatic(classBody, member, state, !!member.static);
}
};
if (member.declare) {
this.tsInAmbientContext(callParseClassMemberWithIsStatic);
} else {
callParseClassMemberWithIsStatic();
}
}
parseClassMemberWithIsStatic(classBody, member, state, isStatic) {
const idx = this.tsTryParseIndexSignature(member);
if (idx) {
classBody.body.push(idx);
if (member.abstract) {
this.raise(TSErrors.IndexSignatureHasAbstract, member);
}
if (member.accessibility) {
this.raise(TSErrors.IndexSignatureHasAccessibility, member, {
modifier: member.accessibility
});
}
if (member.declare) {
this.raise(TSErrors.IndexSignatureHasDeclare, member);
}
if (member.override) {
this.raise(TSErrors.IndexSignatureHasOverride, member);
}
return;
}
if (!this.state.inAbstractClass && member.abstract) {
this.raise(TSErrors.NonAbstractClassHasAbstractMethod, member);
}
if (member.override) {
if (!state.hadSuperClass) {
this.raise(TSErrors.OverrideNotInSubClass, member);
}
}
super.parseClassMemberWithIsStatic(classBody, member, state, isStatic);
}
parsePostMemberNameModifiers(methodOrProp) {
const optional = this.eat(17);
if (optional) methodOrProp.optional = true;
if (methodOrProp.readonly && this.match(10)) {
this.raise(TSErrors.ClassMethodHasReadonly, methodOrProp);
}
if (methodOrProp.declare && this.match(10)) {
this.raise(TSErrors.ClassMethodHasDeclare, methodOrProp);
}
}
parseExpressionStatement(node, expr, decorators) {
const decl = expr.type === "Identifier" ? this.tsParseExpressionStatement(node, expr, decorators) : undefined;
return decl || super.parseExpressionStatement(node, expr, decorators);
}
shouldParseExportDeclaration() {
if (this.tsIsDeclarationStart()) return true;
return super.shouldParseExportDeclaration();
}
parseConditional(expr, startLoc, refExpressionErrors) {
if (!this.match(17)) return expr;
if (this.state.maybeInArrowParameters) {
const nextCh = this.lookaheadCharCode();
if (nextCh === 44 || nextCh === 61 || nextCh === 58 || nextCh === 41) {
this.setOptionalParametersError(refExpressionErrors);
return expr;
}
}
return super.parseConditional(expr, startLoc, refExpressionErrors);
}
parseParenItem(node, startLoc) {
const newNode = super.parseParenItem(node, startLoc);
if (this.eat(17)) {
newNode.optional = true;
this.resetEndLocation(node);
}
if (this.match(14)) {
const typeCastNode = this.startNodeAt(startLoc);
typeCastNode.expression = node;
typeCastNode.typeAnnotation = this.tsParseTypeAnnotation();
return this.finishNode(typeCastNode, "TSTypeCastExpression");
}
return node;
}
parseExportDeclaration(node) {
if (!this.state.isAmbientContext && this.isContextual(125)) {
return this.tsInAmbientContext(() => this.parseExportDeclaration(node));
}
const startLoc = this.state.startLoc;
const isDeclare = this.eatContextual(125);
if (isDeclare && (this.isContextual(125) || !this.shouldParseExportDeclaration())) {
throw this.raise(TSErrors.ExpectedAmbientAfterExportDeclare, this.state.startLoc);
}
const isIdentifier = tokenIsIdentifier(this.state.type);
const declaration = isIdentifier && this.tsTryParseExportDeclaration() || super.parseExportDeclaration(node);
if (!declaration) return null;
if (declaration.type === "TSInterfaceDeclaration" || declaration.type === "TSTypeAliasDeclaration" || isDeclare) {
node.exportKind = "type";
}
if (isDeclare && declaration.type !== "TSImportEqualsDeclaration") {
this.resetStartLocation(declaration, startLoc);
declaration.declare = true;
}
return declaration;
}
parseClassId(node, isStatement, optionalId, bindingType) {
if ((!isStatement || optionalId) && this.isContextual(113)) {
return;
}
super.parseClassId(node, isStatement, optionalId, node.declare ? 1024 : 8331);
const typeParameters = this.tsTryParseTypeParameters(this.tsParseInOutConstModifiers);
if (typeParameters) node.typeParameters = typeParameters;
}
parseClassPropertyAnnotation(node) {
if (!node.optional) {
if (this.eat(35)) {
node.definite = true;
} else if (this.eat(17)) {
node.optional = true;
}
}
const type = this.tsTryParseTypeAnnotation();
if (type) node.typeAnnotation = type;
}
parseClassProperty(node) {
this.parseClassPropertyAnnotation(node);
if (this.state.isAmbientContext && !(node.readonly && !node.typeAnnotation) && this.match(29)) {
this.raise(TSErrors.DeclareClassFieldHasInitializer, this.state.startLoc);
}
if (node.abstract && this.match(29)) {
const {
key
} = node;
this.raise(TSErrors.AbstractPropertyHasInitializer, this.state.startLoc, {
propertyName: key.type === "Identifier" && !node.computed ? key.name : `[${this.input.slice(this.offsetToSourcePos(key.start), this.offsetToSourcePos(key.end))}]`
});
}
return super.parseClassProperty(node);
}
parseClassPrivateProperty(node) {
if (node.abstract) {
this.raise(TSErrors.PrivateElementHasAbstract, node);
}
if (node.accessibility) {
this.raise(TSErrors.PrivateElementHasAccessibility, node, {
modifier: node.accessibility
});
}
this.parseClassPropertyAnnotation(node);
return super.parseClassPrivateProperty(node);
}
parseClassAccessorProperty(node) {
this.parseClassPropertyAnnotation(node);
if (node.optional) {
this.raise(TSErrors.AccessorCannotBeOptional, node);
}
return super.parseClassAccessorProperty(node);
}
pushClassMethod(classBody, method, isGenerator, isAsync, isConstructor, allowsDirectSuper) {
const typeParameters = this.tsTryParseTypeParameters(this.tsParseConstModifier);
if (typeParameters && isConstructor) {
this.raise(TSErrors.ConstructorHasTypeParameters, typeParameters);
}
const {
declare = false,
kind
} = method;
if (declare && (kind === "get" || kind === "set")) {
this.raise(TSErrors.DeclareAccessor, method, {
kind
});
}
if (typeParameters) method.typeParameters = typeParameters;
super.pushClassMethod(classBody, method, isGenerator, isAsync, isConstructor, allowsDirectSuper);
}
pushClassPrivateMethod(classBody, method, isGenerator, isAsync) {
const typeParameters = this.tsTryParseTypeParameters(this.tsParseConstModifier);
if (typeParameters) method.typeParameters = typeParameters;
super.pushClassPrivateMethod(classBody, method, isGenerator, isAsync);
}
declareClassPrivateMethodInScope(node, kind) {
if (node.type === "TSDeclareMethod") return;
if (node.type === "MethodDefinition" && !hasOwnProperty.call(node.value, "body")) {
return;
}
super.declareClassPrivateMethodInScope(node, kind);
}
parseClassSuper(node) {
super.parseClassSuper(node);
if (node.superClass && (this.match(47) || this.match(51))) {
{
node.superTypeParameters = this.tsParseTypeArgumentsInExpression();
}
}
if (this.eatContextual(113)) {
node.implements = this.tsParseHeritageClause("implements");
}
}
parseObjPropValue(prop, startLoc, isGenerator, isAsync, isPattern, isAccessor, refExpressionErrors) {
const typeParameters = this.tsTryParseTypeParameters(this.tsParseConstModifier);
if (typeParameters) prop.typeParameters = typeParameters;
return super.parseObjPropValue(prop, startLoc, isGenerator, isAsync, isPattern, isAccessor, refExpressionErrors);
}
parseFunctionParams(node, isConstructor) {
const typeParameters = this.tsTryParseTypeParameters(this.tsParseConstModifier);
if (typeParameters) node.typeParameters = typeParameters;
super.parseFunctionParams(node, isConstructor);
}
parseVarId(decl, kind) {
super.parseVarId(decl, kind);
if (decl.id.type === "Identifier" && !this.hasPrecedingLineBreak() && this.eat(35)) {
decl.definite = true;
}
const type = this.tsTryParseTypeAnnotation();
if (type) {
decl.id.typeAnnotation = type;
this.resetEndLocation(decl.id);
}
}
parseAsyncArrowFromCallExpression(node, call) {
if (this.match(14)) {
node.returnType = this.tsParseTypeAnnotation();
}
return super.parseAsyncArrowFromCallExpression(node, call);
}
parseMaybeAssign(refExpressionErrors, afterLeftParse) {
var _jsx, _jsx2, _typeCast, _jsx3, _typeCast2;
let state;
let jsx;
let typeCast;
if (this.hasPlugin("jsx") && (this.match(143) || this.match(47))) {
state = this.state.clone();
jsx = this.tryParse(() => super.parseMaybeAssign(refExpressionErrors, afterLeftParse), state);
if (!jsx.error) return jsx.node;
const {
context
} = this.state;
const currentContext = context[context.length - 1];
if (currentContext === types.j_oTag || currentContext === types.j_expr) {
context.pop();
}
}
if (!((_jsx = jsx) != null && _jsx.error) && !this.match(47)) {
return super.parseMaybeAssign(refExpressionErrors, afterLeftParse);
}
if (!state || state === this.state) state = this.state.clone();
let typeParameters;
const arrow = this.tryParse(abort => {
var _expr$extra, _typeParameters;
typeParameters = this.tsParseTypeParameters(this.tsParseConstModifier);
const expr = super.parseMaybeAssign(refExpressionErrors, afterLeftParse);
if (expr.type !== "ArrowFunctionExpression" || (_expr$extra = expr.extra) != null && _expr$extra.parenthesized) {
abort();
}
if (((_typeParameters = typeParameters) == null ? void 0 : _typeParameters.params.length) !== 0) {
this.resetStartLocationFromNode(expr, typeParameters);
}
expr.typeParameters = typeParameters;
return expr;
}, state);
if (!arrow.error && !arrow.aborted) {
if (typeParameters) this.reportReservedArrowTypeParam(typeParameters);
return arrow.node;
}
if (!jsx) {
assert(!this.hasPlugin("jsx"));
typeCast = this.tryParse(() => super.parseMaybeAssign(refExpressionErrors, afterLeftParse), state);
if (!typeCast.error) return typeCast.node;
}
if ((_jsx2 = jsx) != null && _jsx2.node) {
this.state = jsx.failState;
return jsx.node;
}
if (arrow.node) {
this.state = arrow.failState;
if (typeParameters) this.reportReservedArrowTypeParam(typeParameters);
return arrow.node;
}
if ((_typeCast = typeCast) != null && _typeCast.node) {
this.state = typeCast.failState;
return typeCast.node;
}
throw ((_jsx3 = jsx) == null ? void 0 : _jsx3.error) || arrow.error || ((_typeCast2 = typeCast) == null ? void 0 : _typeCast2.error);
}
reportReservedArrowTypeParam(node) {
var _node$extra2;
if (node.params.length === 1 && !node.params[0].constraint && !((_node$extra2 = node.extra) != null && _node$extra2.trailingComma) && this.getPluginOption("typescript", "disallowAmbiguousJSXLike")) {
this.raise(TSErrors.ReservedArrowTypeParam, node);
}
}
parseMaybeUnary(refExpressionErrors, sawUnary) {
if (!this.hasPlugin("jsx") && this.match(47)) {
return this.tsParseTypeAssertion();
}
return super.parseMaybeUnary(refExpressionErrors, sawUnary);
}
parseArrow(node) {
if (this.match(14)) {
const result = this.tryParse(abort => {
const returnType = this.tsParseTypeOrTypePredicateAnnotation(14);
if (this.canInsertSemicolon() || !this.match(19)) abort();
return returnType;
});
if (result.aborted) return;
if (!result.thrown) {
if (result.error) this.state = result.failState;
node.returnType = result.node;
}
}
return super.parseArrow(node);
}
parseFunctionParamType(param) {
if (this.eat(17)) {
param.optional = true;
}
const type = this.tsTryParseTypeAnnotation();
if (type) param.typeAnnotation = type;
this.resetEndLocation(param);
return param;
}
isAssignable(node, isBinding) {
switch (node.type) {
case "TSTypeCastExpression":
return this.isAssignable(node.expression, isBinding);
case "TSParameterProperty":
return true;
default:
return super.isAssignable(node, isBinding);
}
}
toAssignable(node, isLHS = false) {
switch (node.type) {
case "ParenthesizedExpression":
this.toAssignableParenthesizedExpression(node, isLHS);
break;
case "TSAsExpression":
case "TSSatisfiesExpression":
case "TSNonNullExpression":
case "TSTypeAssertion":
if (isLHS) {
this.expressionScope.recordArrowParameterBindingError(TSErrors.UnexpectedTypeCastInParameter, node);
} else {
this.raise(TSErrors.UnexpectedTypeCastInParameter, node);
}
this.toAssignable(node.expression, isLHS);
break;
case "AssignmentExpression":
if (!isLHS && node.left.type === "TSTypeCastExpression") {
node.left = this.typeCastToParameter(node.left);
}
default:
super.toAssignable(node, isLHS);
}
}
toAssignableParenthesizedExpression(node, isLHS) {
switch (node.expression.type) {
case "TSAsExpression":
case "TSSatisfiesExpression":
case "TSNonNullExpression":
case "TSTypeAssertion":
case "ParenthesizedExpression":
this.toAssignable(node.expression, isLHS);
break;
default:
super.toAssignable(node, isLHS);
}
}
checkToRestConversion(node, allowPattern) {
switch (node.type) {
case "TSAsExpression":
case "TSSatisfiesExpression":
case "TSTypeAssertion":
case "TSNonNullExpression":
this.checkToRestConversion(node.expression, false);
break;
default:
super.checkToRestConversion(node, allowPattern);
}
}
isValidLVal(type, isUnparenthesizedInAssign, binding) {
switch (type) {
case "TSTypeCastExpression":
return true;
case "TSParameterProperty":
return "parameter";
case "TSNonNullExpression":
return "expression";
case "TSAsExpression":
case "TSSatisfiesExpression":
case "TSTypeAssertion":
return (binding !== 64 || !isUnparenthesizedInAssign) && ["expression", true];
default:
return super.isValidLVal(type, isUnparenthesizedInAssign, binding);
}
}
parseBindingAtom() {
if (this.state.type === 78) {
return this.parseIdentifier(true);
}
return super.parseBindingAtom();
}
parseMaybeDecoratorArguments(expr, startLoc) {
if (this.match(47) || this.match(51)) {
const typeArguments = this.tsParseTypeArgumentsInExpression();
if (this.match(10)) {
const call = super.parseMaybeDecoratorArguments(expr, startLoc);
{
call.typeParameters = typeArguments;
}
return call;
}
this.unexpected(null, 10);
}
return super.parseMaybeDecoratorArguments(expr, startLoc);
}
checkCommaAfterRest(close) {
if (this.state.isAmbientContext && this.match(12) && this.lookaheadCharCode() === close) {
this.next();
return false;
}
return super.checkCommaAfterRest(close);
}
isClassMethod() {
return this.match(47) || super.isClassMethod();
}
isClassProperty() {
return this.match(35) || this.match(14) || super.isClassProperty();
}
parseMaybeDefault(startLoc, left) {
const node = super.parseMaybeDefault(startLoc, left);
if (node.type === "AssignmentPattern" && node.typeAnnotation && node.right.start < node.typeAnnotation.start) {
this.raise(TSErrors.TypeAnnotationAfterAssign, node.typeAnnotation);
}
return node;
}
getTokenFromCode(code) {
if (this.state.inType) {
if (code === 62) {
this.finishOp(48, 1);
return;
}
if (code === 60) {
this.finishOp(47, 1);
return;
}
}
super.getTokenFromCode(code);
}
reScan_lt_gt() {
const {
type
} = this.state;
if (type === 47) {
this.state.pos -= 1;
this.readToken_lt();
} else if (type === 48) {
this.state.pos -= 1;
this.readToken_gt();
}
}
reScan_lt() {
const {
type
} = this.state;
if (type === 51) {
this.state.pos -= 2;
this.finishOp(47, 1);
return 47;
}
return type;
}
toAssignableListItem(exprList, index, isLHS) {
const node = exprList[index];
if (node.type === "TSTypeCastExpression") {
exprList[index] = this.typeCastToParameter(node);
}
super.toAssignableListItem(exprList, index, isLHS);
}
typeCastToParameter(node) {
node.expression.typeAnnotation = node.typeAnnotation;
this.resetEndLocation(node.expression, node.typeAnnotation.loc.end);
return node.expression;
}
shouldParseArrow(params) {
if (this.match(14)) {
return params.every(expr => this.isAssignable(expr, true));
}
return super.shouldParseArrow(params);
}
shouldParseAsyncArrow() {
return this.match(14) || super.shouldParseAsyncArrow();
}
canHaveLeadingDecorator() {
return super.canHaveLeadingDecorator() || this.isAbstractClass();
}
jsxParseOpeningElementAfterName(node) {
if (this.match(47) || this.match(51)) {
const typeArguments = this.tsTryParseAndCatch(() => this.tsParseTypeArgumentsInExpression());
if (typeArguments) {
{
node.typeParameters = typeArguments;
}
}
}
return super.jsxParseOpeningElementAfterName(node);
}
getGetterSetterExpectedParamCount(method) {
const baseCount = super.getGetterSetterExpectedParamCount(method);
const params = this.getObjectOrClassMethodParams(method);
const firstParam = params[0];
const hasContextParam = firstParam && this.isThisParam(firstParam);
return hasContextParam ? baseCount + 1 : baseCount;
}
parseCatchClauseParam() {
const param = super.parseCatchClauseParam();
const type = this.tsTryParseTypeAnnotation();
if (type) {
param.typeAnnotation = type;
this.resetEndLocation(param);
}
return param;
}
tsInAmbientContext(cb) {
const {
isAmbientContext: oldIsAmbientContext,
strict: oldStrict
} = this.state;
this.state.isAmbientContext = true;
this.state.strict = false;
try {
return cb();
} finally {
this.state.isAmbientContext = oldIsAmbientContext;
this.state.strict = oldStrict;
}
}
parseClass(node, isStatement, optionalId) {
const oldInAbstractClass = this.state.inAbstractClass;
this.state.inAbstractClass = !!node.abstract;
try {
return super.parseClass(node, isStatement, optionalId);
} finally {
this.state.inAbstractClass = oldInAbstractClass;
}
}
tsParseAbstractDeclaration(node, decorators) {
if (this.match(80)) {
node.abstract = true;
return this.maybeTakeDecorators(decorators, this.parseClass(node, true, false));
} else if (this.isContextual(129)) {
if (!this.hasFollowingLineBreak()) {
node.abstract = true;
this.raise(TSErrors.NonClassMethodPropertyHasAbstractModifer, node);
return this.tsParseInterfaceDeclaration(node);
}
} else {
this.unexpected(null, 80);
}
}
parseMethod(node, isGenerator, isAsync, isConstructor, allowDirectSuper, type, inClassScope) {
const method = super.parseMethod(node, isGenerator, isAsync, isConstructor, allowDirectSuper, type, inClassScope);
if (method.abstract) {
const hasEstreePlugin = this.hasPlugin("estree");
const methodFn = hasEstreePlugin ? method.value : method;
if (methodFn.body) {
const {
key
} = method;
this.raise(TSErrors.AbstractMethodHasImplementation, method, {
methodName: key.type === "Identifier" && !method.computed ? key.name : `[${this.input.slice(this.offsetToSourcePos(key.start), this.offsetToSourcePos(key.end))}]`
});
}
}
return method;
}
tsParseTypeParameterName() {
const typeName = this.parseIdentifier();
return typeName.name;
}
shouldParseAsAmbientContext() {
return !!this.getPluginOption("typescript", "dts");
}
parse() {
if (this.shouldParseAsAmbientContext()) {
this.state.isAmbientContext = true;
}
return super.parse();
}
getExpression() {
if (this.shouldParseAsAmbientContext()) {
this.state.isAmbientContext = true;
}
return super.getExpression();
}
parseExportSpecifier(node, isString, isInTypeExport, isMaybeTypeOnly) {
if (!isString && isMaybeTypeOnly) {
this.parseTypeOnlyImportExportSpecifier(node, false, isInTypeExport);
return this.finishNode(node, "ExportSpecifier");
}
node.exportKind = "value";
return super.parseExportSpecifier(node, isString, isInTypeExport, isMaybeTypeOnly);
}
parseImportSpecifier(specifier, importedIsString, isInTypeOnlyImport, isMaybeTypeOnly, bindingType) {
if (!importedIsString && isMaybeTypeOnly) {
this.parseTypeOnlyImportExportSpecifier(specifier, true, isInTypeOnlyImport);
return this.finishNode(specifier, "ImportSpecifier");
}
specifier.importKind = "value";
return super.parseImportSpecifier(specifier, importedIsString, isInTypeOnlyImport, isMaybeTypeOnly, isInTypeOnlyImport ? 4098 : 4096);
}
parseTypeOnlyImportExportSpecifier(node, isImport, isInTypeOnlyImportExport) {
const leftOfAsKey = isImport ? "imported" : "local";
const rightOfAsKey = isImport ? "local" : "exported";
let leftOfAs = node[leftOfAsKey];
let rightOfAs;
let hasTypeSpecifier = false;
let canParseAsKeyword = true;
const loc = leftOfAs.loc.start;
if (this.isContextual(93)) {
const firstAs = this.parseIdentifier();
if (this.isContextual(93)) {
const secondAs = this.parseIdentifier();
if (tokenIsKeywordOrIdentifier(this.state.type)) {
hasTypeSpecifier = true;
leftOfAs = firstAs;
rightOfAs = isImport ? this.parseIdentifier() : this.parseModuleExportName();
canParseAsKeyword = false;
} else {
rightOfAs = secondAs;
canParseAsKeyword = false;
}
} else if (tokenIsKeywordOrIdentifier(this.state.type)) {
canParseAsKeyword = false;
rightOfAs = isImport ? this.parseIdentifier() : this.parseModuleExportName();
} else {
hasTypeSpecifier = true;
leftOfAs = firstAs;
}
} else if (tokenIsKeywordOrIdentifier(this.state.type)) {
hasTypeSpecifier = true;
if (isImport) {
leftOfAs = this.parseIdentifier(true);
if (!this.isContextual(93)) {
this.checkReservedWord(leftOfAs.name, leftOfAs.loc.start, true, true);
}
} else {
leftOfAs = this.parseModuleExportName();
}
}
if (hasTypeSpecifier && isInTypeOnlyImportExport) {
this.raise(isImport ? TSErrors.TypeModifierIsUsedInTypeImports : TSErrors.TypeModifierIsUsedInTypeExports, loc);
}
node[leftOfAsKey] = leftOfAs;
node[rightOfAsKey] = rightOfAs;
const kindKey = isImport ? "importKind" : "exportKind";
node[kindKey] = hasTypeSpecifier ? "type" : "value";
if (canParseAsKeyword && this.eatContextual(93)) {
node[rightOfAsKey] = isImport ? this.parseIdentifier() : this.parseModuleExportName();
}
if (!node[rightOfAsKey]) {
node[rightOfAsKey] = cloneIdentifier(node[leftOfAsKey]);
}
if (isImport) {
this.checkIdentifier(node[rightOfAsKey], hasTypeSpecifier ? 4098 : 4096);
}
}
};
function isPossiblyLiteralEnum(expression) {
if (expression.type !== "MemberExpression") return false;
const {
computed,
property
} = expression;
if (computed && property.type !== "StringLiteral" && (property.type !== "TemplateLiteral" || property.expressions.length > 0)) {
return false;
}
return isUncomputedMemberExpressionChain(expression.object);
}
function isValidAmbientConstInitializer(expression, estree) {
var _expression$extra;
const {
type
} = expression;
if ((_expression$extra = expression.extra) != null && _expression$extra.parenthesized) {
return false;
}
if (estree) {
if (type === "Literal") {
const {
value
} = expression;
if (typeof value === "string" || typeof value === "boolean") {
return true;
}
}
} else {
if (type === "StringLiteral" || type === "BooleanLiteral") {
return true;
}
}
if (isNumber(expression, estree) || isNegativeNumber(expression, estree)) {
return true;
}
if (type === "TemplateLiteral" && expression.expressions.length === 0) {
return true;
}
if (isPossiblyLiteralEnum(expression)) {
return true;
}
return false;
}
function isNumber(expression, estree) {
if (estree) {
return expression.type === "Literal" && (typeof expression.value === "number" || "bigint" in expression);
}
return expression.type === "NumericLiteral" || expression.type === "BigIntLiteral";
}
function isNegativeNumber(expression, estree) {
if (expression.type === "UnaryExpression") {
const {
operator,
argument
} = expression;
if (operator === "-" && isNumber(argument, estree)) {
return true;
}
}
return false;
}
function isUncomputedMemberExpressionChain(expression) {
if (expression.type === "Identifier") return true;
if (expression.type !== "MemberExpression" || expression.computed) {
return false;
}
return isUncomputedMemberExpressionChain(expression.object);
}
const PlaceholderErrors = ParseErrorEnum`placeholders`({
ClassNameIsRequired: "A class name is required.",
UnexpectedSpace: "Unexpected space in placeholder."
});
var placeholders = superClass => class PlaceholdersParserMixin extends superClass {
parsePlaceholder(expectedNode) {
if (this.match(133)) {
const node = this.startNode();
this.next();
this.assertNoSpace();
node.name = super.parseIdentifier(true);
this.assertNoSpace();
this.expect(133);
return this.finishPlaceholder(node, expectedNode);
}
}
finishPlaceholder(node, expectedNode) {
let placeholder = node;
if (!placeholder.expectedNode || !placeholder.type) {
placeholder = this.finishNode(placeholder, "Placeholder");
}
placeholder.expectedNode = expectedNode;
return placeholder;
}
getTokenFromCode(code) {
if (code === 37 && this.input.charCodeAt(this.state.pos + 1) === 37) {
this.finishOp(133, 2);
} else {
super.getTokenFromCode(code);
}
}
parseExprAtom(refExpressionErrors) {
return this.parsePlaceholder("Expression") || super.parseExprAtom(refExpressionErrors);
}
parseIdentifier(liberal) {
return this.parsePlaceholder("Identifier") || super.parseIdentifier(liberal);
}
checkReservedWord(word, startLoc, checkKeywords, isBinding) {
if (word !== undefined) {
super.checkReservedWord(word, startLoc, checkKeywords, isBinding);
}
}
parseBindingAtom() {
return this.parsePlaceholder("Pattern") || super.parseBindingAtom();
}
isValidLVal(type, isParenthesized, binding) {
return type === "Placeholder" || super.isValidLVal(type, isParenthesized, binding);
}
toAssignable(node, isLHS) {
if (node && node.type === "Placeholder" && node.expectedNode === "Expression") {
node.expectedNode = "Pattern";
} else {
super.toAssignable(node, isLHS);
}
}
chStartsBindingIdentifier(ch, pos) {
if (super.chStartsBindingIdentifier(ch, pos)) {
return true;
}
const nextToken = this.lookahead();
if (nextToken.type === 133) {
return true;
}
return false;
}
verifyBreakContinue(node, isBreak) {
if (node.label && node.label.type === "Placeholder") return;
super.verifyBreakContinue(node, isBreak);
}
parseExpressionStatement(node, expr) {
var _expr$extra;
if (expr.type !== "Placeholder" || (_expr$extra = expr.extra) != null && _expr$extra.parenthesized) {
return super.parseExpressionStatement(node, expr);
}
if (this.match(14)) {
const stmt = node;
stmt.label = this.finishPlaceholder(expr, "Identifier");
this.next();
stmt.body = super.parseStatementOrSloppyAnnexBFunctionDeclaration();
return this.finishNode(stmt, "LabeledStatement");
}
this.semicolon();
const stmtPlaceholder = node;
stmtPlaceholder.name = expr.name;
return this.finishPlaceholder(stmtPlaceholder, "Statement");
}
parseBlock(allowDirectives, createNewLexicalScope, afterBlockParse) {
return this.parsePlaceholder("BlockStatement") || super.parseBlock(allowDirectives, createNewLexicalScope, afterBlockParse);
}
parseFunctionId(requireId) {
return this.parsePlaceholder("Identifier") || super.parseFunctionId(requireId);
}
parseClass(node, isStatement, optionalId) {
const type = isStatement ? "ClassDeclaration" : "ClassExpression";
this.next();
const oldStrict = this.state.strict;
const placeholder = this.parsePlaceholder("Identifier");
if (placeholder) {
if (this.match(81) || this.match(133) || this.match(5)) {
node.id = placeholder;
} else if (optionalId || !isStatement) {
node.id = null;
node.body = this.finishPlaceholder(placeholder, "ClassBody");
return this.finishNode(node, type);
} else {
throw this.raise(PlaceholderErrors.ClassNameIsRequired, this.state.startLoc);
}
} else {
this.parseClassId(node, isStatement, optionalId);
}
super.parseClassSuper(node);
node.body = this.parsePlaceholder("ClassBody") || super.parseClassBody(!!node.superClass, oldStrict);
return this.finishNode(node, type);
}
parseExport(node, decorators) {
const placeholder = this.parsePlaceholder("Identifier");
if (!placeholder) return super.parseExport(node, decorators);
const node2 = node;
if (!this.isContextual(98) && !this.match(12)) {
node2.specifiers = [];
node2.source = null;
node2.declaration = this.finishPlaceholder(placeholder, "Declaration");
return this.finishNode(node2, "ExportNamedDeclaration");
}
this.expectPlugin("exportDefaultFrom");
const specifier = this.startNode();
specifier.exported = placeholder;
node2.specifiers = [this.finishNode(specifier, "ExportDefaultSpecifier")];
return super.parseExport(node2, decorators);
}
isExportDefaultSpecifier() {
if (this.match(65)) {
const next = this.nextTokenStart();
if (this.isUnparsedContextual(next, "from")) {
if (this.input.startsWith(tokenLabelName(133), this.nextTokenStartSince(next + 4))) {
return true;
}
}
}
return super.isExportDefaultSpecifier();
}
maybeParseExportDefaultSpecifier(node, maybeDefaultIdentifier) {
var _specifiers;
if ((_specifiers = node.specifiers) != null && _specifiers.length) {
return true;
}
return super.maybeParseExportDefaultSpecifier(node, maybeDefaultIdentifier);
}
checkExport(node) {
const {
specifiers
} = node;
if (specifiers != null && specifiers.length) {
node.specifiers = specifiers.filter(node => node.exported.type === "Placeholder");
}
super.checkExport(node);
node.specifiers = specifiers;
}
parseImport(node) {
const placeholder = this.parsePlaceholder("Identifier");
if (!placeholder) return super.parseImport(node);
node.specifiers = [];
if (!this.isContextual(98) && !this.match(12)) {
node.source = this.finishPlaceholder(placeholder, "StringLiteral");
this.semicolon();
return this.finishNode(node, "ImportDeclaration");
}
const specifier = this.startNodeAtNode(placeholder);
specifier.local = placeholder;
node.specifiers.push(this.finishNode(specifier, "ImportDefaultSpecifier"));
if (this.eat(12)) {
const hasStarImport = this.maybeParseStarImportSpecifier(node);
if (!hasStarImport) this.parseNamedImportSpecifiers(node);
}
this.expectContextual(98);
node.source = this.parseImportSource();
this.semicolon();
return this.finishNode(node, "ImportDeclaration");
}
parseImportSource() {
return this.parsePlaceholder("StringLiteral") || super.parseImportSource();
}
assertNoSpace() {
if (this.state.start > this.offsetToSourcePos(this.state.lastTokEndLoc.index)) {
this.raise(PlaceholderErrors.UnexpectedSpace, this.state.lastTokEndLoc);
}
}
};
var v8intrinsic = superClass => class V8IntrinsicMixin extends superClass {
parseV8Intrinsic() {
if (this.match(54)) {
const v8IntrinsicStartLoc = this.state.startLoc;
const node = this.startNode();
this.next();
if (tokenIsIdentifier(this.state.type)) {
const name = this.parseIdentifierName();
const identifier = this.createIdentifier(node, name);
identifier.type = "V8IntrinsicIdentifier";
if (this.match(10)) {
return identifier;
}
}
this.unexpected(v8IntrinsicStartLoc);
}
}
parseExprAtom(refExpressionErrors) {
return this.parseV8Intrinsic() || super.parseExprAtom(refExpressionErrors);
}
};
const PIPELINE_PROPOSALS = ["minimal", "fsharp", "hack", "smart"];
const TOPIC_TOKENS = ["^^", "@@", "^", "%", "#"];
function validatePlugins(pluginsMap) {
if (pluginsMap.has("decorators")) {
if (pluginsMap.has("decorators-legacy")) {
throw new Error("Cannot use the decorators and decorators-legacy plugin together");
}
const decoratorsBeforeExport = pluginsMap.get("decorators").decoratorsBeforeExport;
if (decoratorsBeforeExport != null && typeof decoratorsBeforeExport !== "boolean") {
throw new Error("'decoratorsBeforeExport' must be a boolean, if specified.");
}
const allowCallParenthesized = pluginsMap.get("decorators").allowCallParenthesized;
if (allowCallParenthesized != null && typeof allowCallParenthesized !== "boolean") {
throw new Error("'allowCallParenthesized' must be a boolean.");
}
}
if (pluginsMap.has("flow") && pluginsMap.has("typescript")) {
throw new Error("Cannot combine flow and typescript plugins.");
}
if (pluginsMap.has("placeholders") && pluginsMap.has("v8intrinsic")) {
throw new Error("Cannot combine placeholders and v8intrinsic plugins.");
}
if (pluginsMap.has("pipelineOperator")) {
var _pluginsMap$get;
const proposal = pluginsMap.get("pipelineOperator").proposal;
if (!PIPELINE_PROPOSALS.includes(proposal)) {
const proposalList = PIPELINE_PROPOSALS.map(p => `"${p}"`).join(", ");
throw new Error(`"pipelineOperator" requires "proposal" option whose value must be one of: ${proposalList}.`);
}
const tupleSyntaxIsHash = ((_pluginsMap$get = pluginsMap.get("recordAndTuple")) == null ? void 0 : _pluginsMap$get.syntaxType) === "hash";
if (proposal === "hack") {
if (pluginsMap.has("placeholders")) {
throw new Error("Cannot combine placeholders plugin and Hack-style pipes.");
}
if (pluginsMap.has("v8intrinsic")) {
throw new Error("Cannot combine v8intrinsic plugin and Hack-style pipes.");
}
const topicToken = pluginsMap.get("pipelineOperator").topicToken;
if (!TOPIC_TOKENS.includes(topicToken)) {
const tokenList = TOPIC_TOKENS.map(t => `"${t}"`).join(", ");
throw new Error(`"pipelineOperator" in "proposal": "hack" mode also requires a "topicToken" option whose value must be one of: ${tokenList}.`);
}
if (topicToken === "#" && tupleSyntaxIsHash) {
throw new Error(`Plugin conflict between \`["pipelineOperator", { proposal: "hack", topicToken: "#" }]\` and \`${JSON.stringify(["recordAndTuple", pluginsMap.get("recordAndTuple")])}\`.`);
}
} else if (proposal === "smart" && tupleSyntaxIsHash) {
throw new Error(`Plugin conflict between \`["pipelineOperator", { proposal: "smart" }]\` and \`${JSON.stringify(["recordAndTuple", pluginsMap.get("recordAndTuple")])}\`.`);
}
}
if (pluginsMap.has("moduleAttributes")) {
{
if (pluginsMap.has("deprecatedImportAssert") || pluginsMap.has("importAssertions")) {
throw new Error("Cannot combine importAssertions, deprecatedImportAssert and moduleAttributes plugins.");
}
const moduleAttributesVersionPluginOption = pluginsMap.get("moduleAttributes").version;
if (moduleAttributesVersionPluginOption !== "may-2020") {
throw new Error("The 'moduleAttributes' plugin requires a 'version' option," + " representing the last proposal update. Currently, the" + " only supported value is 'may-2020'.");
}
}
}
if (pluginsMap.has("importAssertions")) {
if (pluginsMap.has("deprecatedImportAssert")) {
throw new Error("Cannot combine importAssertions and deprecatedImportAssert plugins.");
}
}
if (!pluginsMap.has("deprecatedImportAssert") && pluginsMap.has("importAttributes") && pluginsMap.get("importAttributes").deprecatedAssertSyntax) {
{
pluginsMap.set("deprecatedImportAssert", {});
}
}
if (pluginsMap.has("recordAndTuple")) {
const syntaxType = pluginsMap.get("recordAndTuple").syntaxType;
if (syntaxType != null) {
{
const RECORD_AND_TUPLE_SYNTAX_TYPES = ["hash", "bar"];
if (!RECORD_AND_TUPLE_SYNTAX_TYPES.includes(syntaxType)) {
throw new Error("The 'syntaxType' option of the 'recordAndTuple' plugin must be one of: " + RECORD_AND_TUPLE_SYNTAX_TYPES.map(p => `'${p}'`).join(", "));
}
}
}
}
if (pluginsMap.has("asyncDoExpressions") && !pluginsMap.has("doExpressions")) {
const error = new Error("'asyncDoExpressions' requires 'doExpressions', please add 'doExpressions' to parser plugins.");
error.missingPlugins = "doExpressions";
throw error;
}
if (pluginsMap.has("optionalChainingAssign") && pluginsMap.get("optionalChainingAssign").version !== "2023-07") {
throw new Error("The 'optionalChainingAssign' plugin requires a 'version' option," + " representing the last proposal update. Currently, the" + " only supported value is '2023-07'.");
}
}
const mixinPlugins = {
estree,
jsx,
flow,
typescript,
v8intrinsic,
placeholders
};
const mixinPluginNames = Object.keys(mixinPlugins);
class ExpressionParser extends LValParser {
checkProto(prop, isRecord, sawProto, refExpressionErrors) {
if (prop.type === "SpreadElement" || this.isObjectMethod(prop) || prop.computed || prop.shorthand) {
return sawProto;
}
const key = prop.key;
const name = key.type === "Identifier" ? key.name : key.value;
if (name === "__proto__") {
if (isRecord) {
this.raise(Errors.RecordNoProto, key);
return true;
}
if (sawProto) {
if (refExpressionErrors) {
if (refExpressionErrors.doubleProtoLoc === null) {
refExpressionErrors.doubleProtoLoc = key.loc.start;
}
} else {
this.raise(Errors.DuplicateProto, key);
}
}
return true;
}
return sawProto;
}
shouldExitDescending(expr, potentialArrowAt) {
return expr.type === "ArrowFunctionExpression" && this.offsetToSourcePos(expr.start) === potentialArrowAt;
}
getExpression() {
this.enterInitialScopes();
this.nextToken();
const expr = this.parseExpression();
if (!this.match(140)) {
this.unexpected();
}
this.finalizeRemainingComments();
expr.comments = this.comments;
expr.errors = this.state.errors;
if (this.optionFlags & 256) {
expr.tokens = this.tokens;
}
return expr;
}
parseExpression(disallowIn, refExpressionErrors) {
if (disallowIn) {
return this.disallowInAnd(() => this.parseExpressionBase(refExpressionErrors));
}
return this.allowInAnd(() => this.parseExpressionBase(refExpressionErrors));
}
parseExpressionBase(refExpressionErrors) {
const startLoc = this.state.startLoc;
const expr = this.parseMaybeAssign(refExpressionErrors);
if (this.match(12)) {
const node = this.startNodeAt(startLoc);
node.expressions = [expr];
while (this.eat(12)) {
node.expressions.push(this.parseMaybeAssign(refExpressionErrors));
}
this.toReferencedList(node.expressions);
return this.finishNode(node, "SequenceExpression");
}
return expr;
}
parseMaybeAssignDisallowIn(refExpressionErrors, afterLeftParse) {
return this.disallowInAnd(() => this.parseMaybeAssign(refExpressionErrors, afterLeftParse));
}
parseMaybeAssignAllowIn(refExpressionErrors, afterLeftParse) {
return this.allowInAnd(() => this.parseMaybeAssign(refExpressionErrors, afterLeftParse));
}
setOptionalParametersError(refExpressionErrors) {
refExpressionErrors.optionalParametersLoc = this.state.startLoc;
}
parseMaybeAssign(refExpressionErrors, afterLeftParse) {
const startLoc = this.state.startLoc;
const isYield = this.isContextual(108);
if (isYield) {
if (this.prodParam.hasYield) {
this.next();
let left = this.parseYield(startLoc);
if (afterLeftParse) {
left = afterLeftParse.call(this, left, startLoc);
}
return left;
}
}
let ownExpressionErrors;
if (refExpressionErrors) {
ownExpressionErrors = false;
} else {
refExpressionErrors = new ExpressionErrors();
ownExpressionErrors = true;
}
const {
type
} = this.state;
if (type === 10 || tokenIsIdentifier(type)) {
this.state.potentialArrowAt = this.state.start;
}
let left = this.parseMaybeConditional(refExpressionErrors);
if (afterLeftParse) {
left = afterLeftParse.call(this, left, startLoc);
}
if (tokenIsAssignment(this.state.type)) {
const node = this.startNodeAt(startLoc);
const operator = this.state.value;
node.operator = operator;
if (this.match(29)) {
this.toAssignable(left, true);
node.left = left;
const startIndex = startLoc.index;
if (refExpressionErrors.doubleProtoLoc != null && refExpressionErrors.doubleProtoLoc.index >= startIndex) {
refExpressionErrors.doubleProtoLoc = null;
}
if (refExpressionErrors.shorthandAssignLoc != null && refExpressionErrors.shorthandAssignLoc.index >= startIndex) {
refExpressionErrors.shorthandAssignLoc = null;
}
if (refExpressionErrors.privateKeyLoc != null && refExpressionErrors.privateKeyLoc.index >= startIndex) {
this.checkDestructuringPrivate(refExpressionErrors);
refExpressionErrors.privateKeyLoc = null;
}
} else {
node.left = left;
}
this.next();
node.right = this.parseMaybeAssign();
this.checkLVal(left, this.finishNode(node, "AssignmentExpression"));
return node;
} else if (ownExpressionErrors) {
this.checkExpressionErrors(refExpressionErrors, true);
}
if (isYield) {
const {
type
} = this.state;
const startsExpr = this.hasPlugin("v8intrinsic") ? tokenCanStartExpression(type) : tokenCanStartExpression(type) && !this.match(54);
if (startsExpr && !this.isAmbiguousPrefixOrIdentifier()) {
this.raiseOverwrite(Errors.YieldNotInGeneratorFunction, startLoc);
return this.parseYield(startLoc);
}
}
return left;
}
parseMaybeConditional(refExpressionErrors) {
const startLoc = this.state.startLoc;
const potentialArrowAt = this.state.potentialArrowAt;
const expr = this.parseExprOps(refExpressionErrors);
if (this.shouldExitDescending(expr, potentialArrowAt)) {
return expr;
}
return this.parseConditional(expr, startLoc, refExpressionErrors);
}
parseConditional(expr, startLoc, refExpressionErrors) {
if (this.eat(17)) {
const node = this.startNodeAt(startLoc);
node.test = expr;
node.consequent = this.parseMaybeAssignAllowIn();
this.expect(14);
node.alternate = this.parseMaybeAssign();
return this.finishNode(node, "ConditionalExpression");
}
return expr;
}
parseMaybeUnaryOrPrivate(refExpressionErrors) {
return this.match(139) ? this.parsePrivateName() : this.parseMaybeUnary(refExpressionErrors);
}
parseExprOps(refExpressionErrors) {
const startLoc = this.state.startLoc;
const potentialArrowAt = this.state.potentialArrowAt;
const expr = this.parseMaybeUnaryOrPrivate(refExpressionErrors);
if (this.shouldExitDescending(expr, potentialArrowAt)) {
return expr;
}
return this.parseExprOp(expr, startLoc, -1);
}
parseExprOp(left, leftStartLoc, minPrec) {
if (this.isPrivateName(left)) {
const value = this.getPrivateNameSV(left);
if (minPrec >= tokenOperatorPrecedence(58) || !this.prodParam.hasIn || !this.match(58)) {
this.raise(Errors.PrivateInExpectedIn, left, {
identifierName: value
});
}
this.classScope.usePrivateName(value, left.loc.start);
}
const op = this.state.type;
if (tokenIsOperator(op) && (this.prodParam.hasIn || !this.match(58))) {
let prec = tokenOperatorPrecedence(op);
if (prec > minPrec) {
if (op === 39) {
this.expectPlugin("pipelineOperator");
if (this.state.inFSharpPipelineDirectBody) {
return left;
}
this.checkPipelineAtInfixOperator(left, leftStartLoc);
}
const node = this.startNodeAt(leftStartLoc);
node.left = left;
node.operator = this.state.value;
const logical = op === 41 || op === 42;
const coalesce = op === 40;
if (coalesce) {
prec = tokenOperatorPrecedence(42);
}
this.next();
if (op === 39 && this.hasPlugin(["pipelineOperator", {
proposal: "minimal"
}])) {
if (this.state.type === 96 && this.prodParam.hasAwait) {
throw this.raise(Errors.UnexpectedAwaitAfterPipelineBody, this.state.startLoc);
}
}
node.right = this.parseExprOpRightExpr(op, prec);
const finishedNode = this.finishNode(node, logical || coalesce ? "LogicalExpression" : "BinaryExpression");
const nextOp = this.state.type;
if (coalesce && (nextOp === 41 || nextOp === 42) || logical && nextOp === 40) {
throw this.raise(Errors.MixingCoalesceWithLogical, this.state.startLoc);
}
return this.parseExprOp(finishedNode, leftStartLoc, minPrec);
}
}
return left;
}
parseExprOpRightExpr(op, prec) {
const startLoc = this.state.startLoc;
switch (op) {
case 39:
switch (this.getPluginOption("pipelineOperator", "proposal")) {
case "hack":
return this.withTopicBindingContext(() => {
return this.parseHackPipeBody();
});
case "fsharp":
return this.withSoloAwaitPermittingContext(() => {
return this.parseFSharpPipelineBody(prec);
});
}
if (this.getPluginOption("pipelineOperator", "proposal") === "smart") {
return this.withTopicBindingContext(() => {
if (this.prodParam.hasYield && this.isContextual(108)) {
throw this.raise(Errors.PipeBodyIsTighter, this.state.startLoc);
}
return this.parseSmartPipelineBodyInStyle(this.parseExprOpBaseRightExpr(op, prec), startLoc);
});
}
default:
return this.parseExprOpBaseRightExpr(op, prec);
}
}
parseExprOpBaseRightExpr(op, prec) {
const startLoc = this.state.startLoc;
return this.parseExprOp(this.parseMaybeUnaryOrPrivate(), startLoc, tokenIsRightAssociative(op) ? prec - 1 : prec);
}
parseHackPipeBody() {
var _body$extra;
const {
startLoc
} = this.state;
const body = this.parseMaybeAssign();
const requiredParentheses = UnparenthesizedPipeBodyDescriptions.has(body.type);
if (requiredParentheses && !((_body$extra = body.extra) != null && _body$extra.parenthesized)) {
this.raise(Errors.PipeUnparenthesizedBody, startLoc, {
type: body.type
});
}
if (!this.topicReferenceWasUsedInCurrentContext()) {
this.raise(Errors.PipeTopicUnused, startLoc);
}
return body;
}
checkExponentialAfterUnary(node) {
if (this.match(57)) {
this.raise(Errors.UnexpectedTokenUnaryExponentiation, node.argument);
}
}
parseMaybeUnary(refExpressionErrors, sawUnary) {
const startLoc = this.state.startLoc;
const isAwait = this.isContextual(96);
if (isAwait && this.recordAwaitIfAllowed()) {
this.next();
const expr = this.parseAwait(startLoc);
if (!sawUnary) this.checkExponentialAfterUnary(expr);
return expr;
}
const update = this.match(34);
const node = this.startNode();
if (tokenIsPrefix(this.state.type)) {
node.operator = this.state.value;
node.prefix = true;
if (this.match(72)) {
this.expectPlugin("throwExpressions");
}
const isDelete = this.match(89);
this.next();
node.argument = this.parseMaybeUnary(null, true);
this.checkExpressionErrors(refExpressionErrors, true);
if (this.state.strict && isDelete) {
const arg = node.argument;
if (arg.type === "Identifier") {
this.raise(Errors.StrictDelete, node);
} else if (this.hasPropertyAsPrivateName(arg)) {
this.raise(Errors.DeletePrivateField, node);
}
}
if (!update) {
if (!sawUnary) {
this.checkExponentialAfterUnary(node);
}
return this.finishNode(node, "UnaryExpression");
}
}
const expr = this.parseUpdate(node, update, refExpressionErrors);
if (isAwait) {
const {
type
} = this.state;
const startsExpr = this.hasPlugin("v8intrinsic") ? tokenCanStartExpression(type) : tokenCanStartExpression(type) && !this.match(54);
if (startsExpr && !this.isAmbiguousPrefixOrIdentifier()) {
this.raiseOverwrite(Errors.AwaitNotInAsyncContext, startLoc);
return this.parseAwait(startLoc);
}
}
return expr;
}
parseUpdate(node, update, refExpressionErrors) {
if (update) {
const updateExpressionNode = node;
this.checkLVal(updateExpressionNode.argument, this.finishNode(updateExpressionNode, "UpdateExpression"));
return node;
}
const startLoc = this.state.startLoc;
let expr = this.parseExprSubscripts(refExpressionErrors);
if (this.checkExpressionErrors(refExpressionErrors, false)) return expr;
while (tokenIsPostfix(this.state.type) && !this.canInsertSemicolon()) {
const node = this.startNodeAt(startLoc);
node.operator = this.state.value;
node.prefix = false;
node.argument = expr;
this.next();
this.checkLVal(expr, expr = this.finishNode(node, "UpdateExpression"));
}
return expr;
}
parseExprSubscripts(refExpressionErrors) {
const startLoc = this.state.startLoc;
const potentialArrowAt = this.state.potentialArrowAt;
const expr = this.parseExprAtom(refExpressionErrors);
if (this.shouldExitDescending(expr, potentialArrowAt)) {
return expr;
}
return this.parseSubscripts(expr, startLoc);
}
parseSubscripts(base, startLoc, noCalls) {
const state = {
optionalChainMember: false,
maybeAsyncArrow: this.atPossibleAsyncArrow(base),
stop: false
};
do {
base = this.parseSubscript(base, startLoc, noCalls, state);
state.maybeAsyncArrow = false;
} while (!state.stop);
return base;
}
parseSubscript(base, startLoc, noCalls, state) {
const {
type
} = this.state;
if (!noCalls && type === 15) {
return this.parseBind(base, startLoc, noCalls, state);
} else if (tokenIsTemplate(type)) {
return this.parseTaggedTemplateExpression(base, startLoc, state);
}
let optional = false;
if (type === 18) {
if (noCalls) {
this.raise(Errors.OptionalChainingNoNew, this.state.startLoc);
if (this.lookaheadCharCode() === 40) {
state.stop = true;
return base;
}
}
state.optionalChainMember = optional = true;
this.next();
}
if (!noCalls && this.match(10)) {
return this.parseCoverCallAndAsyncArrowHead(base, startLoc, state, optional);
} else {
const computed = this.eat(0);
if (computed || optional || this.eat(16)) {
return this.parseMember(base, startLoc, state, computed, optional);
} else {
state.stop = true;
return base;
}
}
}
parseMember(base, startLoc, state, computed, optional) {
const node = this.startNodeAt(startLoc);
node.object = base;
node.computed = computed;
if (computed) {
node.property = this.parseExpression();
this.expect(3);
} else if (this.match(139)) {
if (base.type === "Super") {
this.raise(Errors.SuperPrivateField, startLoc);
}
this.classScope.usePrivateName(this.state.value, this.state.startLoc);
node.property = this.parsePrivateName();
} else {
node.property = this.parseIdentifier(true);
}
if (state.optionalChainMember) {
node.optional = optional;
return this.finishNode(node, "OptionalMemberExpression");
} else {
return this.finishNode(node, "MemberExpression");
}
}
parseBind(base, startLoc, noCalls, state) {
const node = this.startNodeAt(startLoc);
node.object = base;
this.next();
node.callee = this.parseNoCallExpr();
state.stop = true;
return this.parseSubscripts(this.finishNode(node, "BindExpression"), startLoc, noCalls);
}
parseCoverCallAndAsyncArrowHead(base, startLoc, state, optional) {
const oldMaybeInArrowParameters = this.state.maybeInArrowParameters;
let refExpressionErrors = null;
this.state.maybeInArrowParameters = true;
this.next();
const node = this.startNodeAt(startLoc);
node.callee = base;
const {
maybeAsyncArrow,
optionalChainMember
} = state;
if (maybeAsyncArrow) {
this.expressionScope.enter(newAsyncArrowScope());
refExpressionErrors = new ExpressionErrors();
}
if (optionalChainMember) {
node.optional = optional;
}
if (optional) {
node.arguments = this.parseCallExpressionArguments(11);
} else {
node.arguments = this.parseCallExpressionArguments(11, base.type !== "Super", node, refExpressionErrors);
}
let finishedNode = this.finishCallExpression(node, optionalChainMember);
if (maybeAsyncArrow && this.shouldParseAsyncArrow() && !optional) {
state.stop = true;
this.checkDestructuringPrivate(refExpressionErrors);
this.expressionScope.validateAsPattern();
this.expressionScope.exit();
finishedNode = this.parseAsyncArrowFromCallExpression(this.startNodeAt(startLoc), finishedNode);
} else {
if (maybeAsyncArrow) {
this.checkExpressionErrors(refExpressionErrors, true);
this.expressionScope.exit();
}
this.toReferencedArguments(finishedNode);
}
this.state.maybeInArrowParameters = oldMaybeInArrowParameters;
return finishedNode;
}
toReferencedArguments(node, isParenthesizedExpr) {
this.toReferencedListDeep(node.arguments, isParenthesizedExpr);
}
parseTaggedTemplateExpression(base, startLoc, state) {
const node = this.startNodeAt(startLoc);
node.tag = base;
node.quasi = this.parseTemplate(true);
if (state.optionalChainMember) {
this.raise(Errors.OptionalChainingNoTemplate, startLoc);
}
return this.finishNode(node, "TaggedTemplateExpression");
}
atPossibleAsyncArrow(base) {
return base.type === "Identifier" && base.name === "async" && this.state.lastTokEndLoc.index === base.end && !this.canInsertSemicolon() && base.end - base.start === 5 && this.offsetToSourcePos(base.start) === this.state.potentialArrowAt;
}
finishCallExpression(node, optional) {
if (node.callee.type === "Import") {
if (node.arguments.length === 0 || node.arguments.length > 2) {
this.raise(Errors.ImportCallArity, node);
} else {
for (const arg of node.arguments) {
if (arg.type === "SpreadElement") {
this.raise(Errors.ImportCallSpreadArgument, arg);
}
}
}
}
return this.finishNode(node, optional ? "OptionalCallExpression" : "CallExpression");
}
parseCallExpressionArguments(close, allowPlaceholder, nodeForExtra, refExpressionErrors) {
const elts = [];
let first = true;
const oldInFSharpPipelineDirectBody = this.state.inFSharpPipelineDirectBody;
this.state.inFSharpPipelineDirectBody = false;
while (!this.eat(close)) {
if (first) {
first = false;
} else {
this.expect(12);
if (this.match(close)) {
if (nodeForExtra) {
this.addTrailingCommaExtraToNode(nodeForExtra);
}
this.next();
break;
}
}
elts.push(this.parseExprListItem(false, refExpressionErrors, allowPlaceholder));
}
this.state.inFSharpPipelineDirectBody = oldInFSharpPipelineDirectBody;
return elts;
}
shouldParseAsyncArrow() {
return this.match(19) && !this.canInsertSemicolon();
}
parseAsyncArrowFromCallExpression(node, call) {
var _call$extra;
this.resetPreviousNodeTrailingComments(call);
this.expect(19);
this.parseArrowExpression(node, call.arguments, true, (_call$extra = call.extra) == null ? void 0 : _call$extra.trailingCommaLoc);
if (call.innerComments) {
setInnerComments(node, call.innerComments);
}
if (call.callee.trailingComments) {
setInnerComments(node, call.callee.trailingComments);
}
return node;
}
parseNoCallExpr() {
const startLoc = this.state.startLoc;
return this.parseSubscripts(this.parseExprAtom(), startLoc, true);
}
parseExprAtom(refExpressionErrors) {
let node;
let decorators = null;
const {
type
} = this.state;
switch (type) {
case 79:
return this.parseSuper();
case 83:
node = this.startNode();
this.next();
if (this.match(16)) {
return this.parseImportMetaProperty(node);
}
if (this.match(10)) {
if (this.optionFlags & 512) {
return this.parseImportCall(node);
} else {
return this.finishNode(node, "Import");
}
} else {
this.raise(Errors.UnsupportedImport, this.state.lastTokStartLoc);
return this.finishNode(node, "Import");
}
case 78:
node = this.startNode();
this.next();
return this.finishNode(node, "ThisExpression");
case 90:
{
return this.parseDo(this.startNode(), false);
}
case 56:
case 31:
{
this.readRegexp();
return this.parseRegExpLiteral(this.state.value);
}
case 135:
return this.parseNumericLiteral(this.state.value);
case 136:
return this.parseBigIntLiteral(this.state.value);
case 134:
return this.parseStringLiteral(this.state.value);
case 84:
return this.parseNullLiteral();
case 85:
return this.parseBooleanLiteral(true);
case 86:
return this.parseBooleanLiteral(false);
case 10:
{
const canBeArrow = this.state.potentialArrowAt === this.state.start;
return this.parseParenAndDistinguishExpression(canBeArrow);
}
case 2:
case 1:
{
return this.parseArrayLike(this.state.type === 2 ? 4 : 3, false, true);
}
case 0:
{
return this.parseArrayLike(3, true, false, refExpressionErrors);
}
case 6:
case 7:
{
return this.parseObjectLike(this.state.type === 6 ? 9 : 8, false, true);
}
case 5:
{
return this.parseObjectLike(8, false, false, refExpressionErrors);
}
case 68:
return this.parseFunctionOrFunctionSent();
case 26:
decorators = this.parseDecorators();
case 80:
return this.parseClass(this.maybeTakeDecorators(decorators, this.startNode()), false);
case 77:
return this.parseNewOrNewTarget();
case 25:
case 24:
return this.parseTemplate(false);
case 15:
{
node = this.startNode();
this.next();
node.object = null;
const callee = node.callee = this.parseNoCallExpr();
if (callee.type === "MemberExpression") {
return this.finishNode(node, "BindExpression");
} else {
throw this.raise(Errors.UnsupportedBind, callee);
}
}
case 139:
{
this.raise(Errors.PrivateInExpectedIn, this.state.startLoc, {
identifierName: this.state.value
});
return this.parsePrivateName();
}
case 33:
{
return this.parseTopicReferenceThenEqualsSign(54, "%");
}
case 32:
{
return this.parseTopicReferenceThenEqualsSign(44, "^");
}
case 37:
case 38:
{
return this.parseTopicReference("hack");
}
case 44:
case 54:
case 27:
{
const pipeProposal = this.getPluginOption("pipelineOperator", "proposal");
if (pipeProposal) {
return this.parseTopicReference(pipeProposal);
}
this.unexpected();
break;
}
case 47:
{
const lookaheadCh = this.input.codePointAt(this.nextTokenStart());
if (isIdentifierStart(lookaheadCh) || lookaheadCh === 62) {
this.expectOnePlugin(["jsx", "flow", "typescript"]);
} else {
this.unexpected();
}
break;
}
default:
if (type === 137) {
return this.parseDecimalLiteral(this.state.value);
}
if (tokenIsIdentifier(type)) {
if (this.isContextual(127) && this.lookaheadInLineCharCode() === 123) {
return this.parseModuleExpression();
}
const canBeArrow = this.state.potentialArrowAt === this.state.start;
const containsEsc = this.state.containsEsc;
const id = this.parseIdentifier();
if (!containsEsc && id.name === "async" && !this.canInsertSemicolon()) {
const {
type
} = this.state;
if (type === 68) {
this.resetPreviousNodeTrailingComments(id);
this.next();
return this.parseAsyncFunctionExpression(this.startNodeAtNode(id));
} else if (tokenIsIdentifier(type)) {
if (this.lookaheadCharCode() === 61) {
return this.parseAsyncArrowUnaryFunction(this.startNodeAtNode(id));
} else {
return id;
}
} else if (type === 90) {
this.resetPreviousNodeTrailingComments(id);
return this.parseDo(this.startNodeAtNode(id), true);
}
}
if (canBeArrow && this.match(19) && !this.canInsertSemicolon()) {
this.next();
return this.parseArrowExpression(this.startNodeAtNode(id), [id], false);
}
return id;
} else {
this.unexpected();
}
}
}
parseTopicReferenceThenEqualsSign(topicTokenType, topicTokenValue) {
const pipeProposal = this.getPluginOption("pipelineOperator", "proposal");
if (pipeProposal) {
this.state.type = topicTokenType;
this.state.value = topicTokenValue;
this.state.pos--;
this.state.end--;
this.state.endLoc = createPositionWithColumnOffset(this.state.endLoc, -1);
return this.parseTopicReference(pipeProposal);
} else {
this.unexpected();
}
}
parseTopicReference(pipeProposal) {
const node = this.startNode();
const startLoc = this.state.startLoc;
const tokenType = this.state.type;
this.next();
return this.finishTopicReference(node, startLoc, pipeProposal, tokenType);
}
finishTopicReference(node, startLoc, pipeProposal, tokenType) {
if (this.testTopicReferenceConfiguration(pipeProposal, startLoc, tokenType)) {
if (pipeProposal === "hack") {
if (!this.topicReferenceIsAllowedInCurrentContext()) {
this.raise(Errors.PipeTopicUnbound, startLoc);
}
this.registerTopicReference();
return this.finishNode(node, "TopicReference");
} else {
if (!this.topicReferenceIsAllowedInCurrentContext()) {
this.raise(Errors.PrimaryTopicNotAllowed, startLoc);
}
this.registerTopicReference();
return this.finishNode(node, "PipelinePrimaryTopicReference");
}
} else {
throw this.raise(Errors.PipeTopicUnconfiguredToken, startLoc, {
token: tokenLabelName(tokenType)
});
}
}
testTopicReferenceConfiguration(pipeProposal, startLoc, tokenType) {
switch (pipeProposal) {
case "hack":
{
return this.hasPlugin(["pipelineOperator", {
topicToken: tokenLabelName(tokenType)
}]);
}
case "smart":
return tokenType === 27;
default:
throw this.raise(Errors.PipeTopicRequiresHackPipes, startLoc);
}
}
parseAsyncArrowUnaryFunction(node) {
this.prodParam.enter(functionFlags(true, this.prodParam.hasYield));
const params = [this.parseIdentifier()];
this.prodParam.exit();
if (this.hasPrecedingLineBreak()) {
this.raise(Errors.LineTerminatorBeforeArrow, this.state.curPosition());
}
this.expect(19);
return this.parseArrowExpression(node, params, true);
}
parseDo(node, isAsync) {
this.expectPlugin("doExpressions");
if (isAsync) {
this.expectPlugin("asyncDoExpressions");
}
node.async = isAsync;
this.next();
const oldLabels = this.state.labels;
this.state.labels = [];
if (isAsync) {
this.prodParam.enter(2);
node.body = this.parseBlock();
this.prodParam.exit();
} else {
node.body = this.parseBlock();
}
this.state.labels = oldLabels;
return this.finishNode(node, "DoExpression");
}
parseSuper() {
const node = this.startNode();
this.next();
if (this.match(10) && !this.scope.allowDirectSuper && !(this.optionFlags & 16)) {
this.raise(Errors.SuperNotAllowed, node);
} else if (!this.scope.allowSuper && !(this.optionFlags & 16)) {
this.raise(Errors.UnexpectedSuper, node);
}
if (!this.match(10) && !this.match(0) && !this.match(16)) {
this.raise(Errors.UnsupportedSuper, node);
}
return this.finishNode(node, "Super");
}
parsePrivateName() {
const node = this.startNode();
const id = this.startNodeAt(createPositionWithColumnOffset(this.state.startLoc, 1));
const name = this.state.value;
this.next();
node.id = this.createIdentifier(id, name);
return this.finishNode(node, "PrivateName");
}
parseFunctionOrFunctionSent() {
const node = this.startNode();
this.next();
if (this.prodParam.hasYield && this.match(16)) {
const meta = this.createIdentifier(this.startNodeAtNode(node), "function");
this.next();
if (this.match(103)) {
this.expectPlugin("functionSent");
} else if (!this.hasPlugin("functionSent")) {
this.unexpected();
}
return this.parseMetaProperty(node, meta, "sent");
}
return this.parseFunction(node);
}
parseMetaProperty(node, meta, propertyName) {
node.meta = meta;
const containsEsc = this.state.containsEsc;
node.property = this.parseIdentifier(true);
if (node.property.name !== propertyName || containsEsc) {
this.raise(Errors.UnsupportedMetaProperty, node.property, {
target: meta.name,
onlyValidPropertyName: propertyName
});
}
return this.finishNode(node, "MetaProperty");
}
parseImportMetaProperty(node) {
const id = this.createIdentifier(this.startNodeAtNode(node), "import");
this.next();
if (this.isContextual(101)) {
if (!this.inModule) {
this.raise(Errors.ImportMetaOutsideModule, id);
}
this.sawUnambiguousESM = true;
} else if (this.isContextual(105) || this.isContextual(97)) {
const isSource = this.isContextual(105);
this.expectPlugin(isSource ? "sourcePhaseImports" : "deferredImportEvaluation");
if (!(this.optionFlags & 512)) {
throw this.raise(Errors.DynamicImportPhaseRequiresImportExpressions, this.state.startLoc, {
phase: this.state.value
});
}
this.next();
node.phase = isSource ? "source" : "defer";
return this.parseImportCall(node);
}
return this.parseMetaProperty(node, id, "meta");
}
parseLiteralAtNode(value, type, node) {
this.addExtra(node, "rawValue", value);
this.addExtra(node, "raw", this.input.slice(this.offsetToSourcePos(node.start), this.state.end));
node.value = value;
this.next();
return this.finishNode(node, type);
}
parseLiteral(value, type) {
const node = this.startNode();
return this.parseLiteralAtNode(value, type, node);
}
parseStringLiteral(value) {
return this.parseLiteral(value, "StringLiteral");
}
parseNumericLiteral(value) {
return this.parseLiteral(value, "NumericLiteral");
}
parseBigIntLiteral(value) {
return this.parseLiteral(value, "BigIntLiteral");
}
parseDecimalLiteral(value) {
return this.parseLiteral(value, "DecimalLiteral");
}
parseRegExpLiteral(value) {
const node = this.startNode();
this.addExtra(node, "raw", this.input.slice(this.offsetToSourcePos(node.start), this.state.end));
node.pattern = value.pattern;
node.flags = value.flags;
this.next();
return this.finishNode(node, "RegExpLiteral");
}
parseBooleanLiteral(value) {
const node = this.startNode();
node.value = value;
this.next();
return this.finishNode(node, "BooleanLiteral");
}
parseNullLiteral() {
const node = this.startNode();
this.next();
return this.finishNode(node, "NullLiteral");
}
parseParenAndDistinguishExpression(canBeArrow) {
const startLoc = this.state.startLoc;
let val;
this.next();
this.expressionScope.enter(newArrowHeadScope());
const oldMaybeInArrowParameters = this.state.maybeInArrowParameters;
const oldInFSharpPipelineDirectBody = this.state.inFSharpPipelineDirectBody;
this.state.maybeInArrowParameters = true;
this.state.inFSharpPipelineDirectBody = false;
const innerStartLoc = this.state.startLoc;
const exprList = [];
const refExpressionErrors = new ExpressionErrors();
let first = true;
let spreadStartLoc;
let optionalCommaStartLoc;
while (!this.match(11)) {
if (first) {
first = false;
} else {
this.expect(12, refExpressionErrors.optionalParametersLoc === null ? null : refExpressionErrors.optionalParametersLoc);
if (this.match(11)) {
optionalCommaStartLoc = this.state.startLoc;
break;
}
}
if (this.match(21)) {
const spreadNodeStartLoc = this.state.startLoc;
spreadStartLoc = this.state.startLoc;
exprList.push(this.parseParenItem(this.parseRestBinding(), spreadNodeStartLoc));
if (!this.checkCommaAfterRest(41)) {
break;
}
} else {
exprList.push(this.parseMaybeAssignAllowIn(refExpressionErrors, this.parseParenItem));
}
}
const innerEndLoc = this.state.lastTokEndLoc;
this.expect(11);
this.state.maybeInArrowParameters = oldMaybeInArrowParameters;
this.state.inFSharpPipelineDirectBody = oldInFSharpPipelineDirectBody;
let arrowNode = this.startNodeAt(startLoc);
if (canBeArrow && this.shouldParseArrow(exprList) && (arrowNode = this.parseArrow(arrowNode))) {
this.checkDestructuringPrivate(refExpressionErrors);
this.expressionScope.validateAsPattern();
this.expressionScope.exit();
this.parseArrowExpression(arrowNode, exprList, false);
return arrowNode;
}
this.expressionScope.exit();
if (!exprList.length) {
this.unexpected(this.state.lastTokStartLoc);
}
if (optionalCommaStartLoc) this.unexpected(optionalCommaStartLoc);
if (spreadStartLoc) this.unexpected(spreadStartLoc);
this.checkExpressionErrors(refExpressionErrors, true);
this.toReferencedListDeep(exprList, true);
if (exprList.length > 1) {
val = this.startNodeAt(innerStartLoc);
val.expressions = exprList;
this.finishNode(val, "SequenceExpression");
this.resetEndLocation(val, innerEndLoc);
} else {
val = exprList[0];
}
return this.wrapParenthesis(startLoc, val);
}
wrapParenthesis(startLoc, expression) {
if (!(this.optionFlags & 1024)) {
this.addExtra(expression, "parenthesized", true);
this.addExtra(expression, "parenStart", startLoc.index);
this.takeSurroundingComments(expression, startLoc.index, this.state.lastTokEndLoc.index);
return expression;
}
const parenExpression = this.startNodeAt(startLoc);
parenExpression.expression = expression;
return this.finishNode(parenExpression, "ParenthesizedExpression");
}
shouldParseArrow(params) {
return !this.canInsertSemicolon();
}
parseArrow(node) {
if (this.eat(19)) {
return node;
}
}
parseParenItem(node, startLoc) {
return node;
}
parseNewOrNewTarget() {
const node = this.startNode();
this.next();
if (this.match(16)) {
const meta = this.createIdentifier(this.startNodeAtNode(node), "new");
this.next();
const metaProp = this.parseMetaProperty(node, meta, "target");
if (!this.scope.inNonArrowFunction && !this.scope.inClass && !(this.optionFlags & 4)) {
this.raise(Errors.UnexpectedNewTarget, metaProp);
}
return metaProp;
}
return this.parseNew(node);
}
parseNew(node) {
this.parseNewCallee(node);
if (this.eat(10)) {
const args = this.parseExprList(11);
this.toReferencedList(args);
node.arguments = args;
} else {
node.arguments = [];
}
return this.finishNode(node, "NewExpression");
}
parseNewCallee(node) {
const isImport = this.match(83);
const callee = this.parseNoCallExpr();
node.callee = callee;
if (isImport && (callee.type === "Import" || callee.type === "ImportExpression")) {
this.raise(Errors.ImportCallNotNewExpression, callee);
}
}
parseTemplateElement(isTagged) {
const {
start,
startLoc,
end,
value
} = this.state;
const elemStart = start + 1;
const elem = this.startNodeAt(createPositionWithColumnOffset(startLoc, 1));
if (value === null) {
if (!isTagged) {
this.raise(Errors.InvalidEscapeSequenceTemplate, createPositionWithColumnOffset(this.state.firstInvalidTemplateEscapePos, 1));
}
}
const isTail = this.match(24);
const endOffset = isTail ? -1 : -2;
const elemEnd = end + endOffset;
elem.value = {
raw: this.input.slice(elemStart, elemEnd).replace(/\r\n?/g, "\n"),
cooked: value === null ? null : value.slice(1, endOffset)
};
elem.tail = isTail;
this.next();
const finishedNode = this.finishNode(elem, "TemplateElement");
this.resetEndLocation(finishedNode, createPositionWithColumnOffset(this.state.lastTokEndLoc, endOffset));
return finishedNode;
}
parseTemplate(isTagged) {
const node = this.startNode();
let curElt = this.parseTemplateElement(isTagged);
const quasis = [curElt];
const substitutions = [];
while (!curElt.tail) {
substitutions.push(this.parseTemplateSubstitution());
this.readTemplateContinuation();
quasis.push(curElt = this.parseTemplateElement(isTagged));
}
node.expressions = substitutions;
node.quasis = quasis;
return this.finishNode(node, "TemplateLiteral");
}
parseTemplateSubstitution() {
return this.parseExpression();
}
parseObjectLike(close, isPattern, isRecord, refExpressionErrors) {
if (isRecord) {
this.expectPlugin("recordAndTuple");
}
const oldInFSharpPipelineDirectBody = this.state.inFSharpPipelineDirectBody;
this.state.inFSharpPipelineDirectBody = false;
let sawProto = false;
let first = true;
const node = this.startNode();
node.properties = [];
this.next();
while (!this.match(close)) {
if (first) {
first = false;
} else {
this.expect(12);
if (this.match(close)) {
this.addTrailingCommaExtraToNode(node);
break;
}
}
let prop;
if (isPattern) {
prop = this.parseBindingProperty();
} else {
prop = this.parsePropertyDefinition(refExpressionErrors);
sawProto = this.checkProto(prop, isRecord, sawProto, refExpressionErrors);
}
if (isRecord && !this.isObjectProperty(prop) && prop.type !== "SpreadElement") {
this.raise(Errors.InvalidRecordProperty, prop);
}
{
if (prop.shorthand) {
this.addExtra(prop, "shorthand", true);
}
}
node.properties.push(prop);
}
this.next();
this.state.inFSharpPipelineDirectBody = oldInFSharpPipelineDirectBody;
let type = "ObjectExpression";
if (isPattern) {
type = "ObjectPattern";
} else if (isRecord) {
type = "RecordExpression";
}
return this.finishNode(node, type);
}
addTrailingCommaExtraToNode(node) {
this.addExtra(node, "trailingComma", this.state.lastTokStartLoc.index);
this.addExtra(node, "trailingCommaLoc", this.state.lastTokStartLoc, false);
}
maybeAsyncOrAccessorProp(prop) {
return !prop.computed && prop.key.type === "Identifier" && (this.isLiteralPropertyName() || this.match(0) || this.match(55));
}
parsePropertyDefinition(refExpressionErrors) {
let decorators = [];
if (this.match(26)) {
if (this.hasPlugin("decorators")) {
this.raise(Errors.UnsupportedPropertyDecorator, this.state.startLoc);
}
while (this.match(26)) {
decorators.push(this.parseDecorator());
}
}
const prop = this.startNode();
let isAsync = false;
let isAccessor = false;
let startLoc;
if (this.match(21)) {
if (decorators.length) this.unexpected();
return this.parseSpread();
}
if (decorators.length) {
prop.decorators = decorators;
decorators = [];
}
prop.method = false;
if (refExpressionErrors) {
startLoc = this.state.startLoc;
}
let isGenerator = this.eat(55);
this.parsePropertyNamePrefixOperator(prop);
const containsEsc = this.state.containsEsc;
this.parsePropertyName(prop, refExpressionErrors);
if (!isGenerator && !containsEsc && this.maybeAsyncOrAccessorProp(prop)) {
const {
key
} = prop;
const keyName = key.name;
if (keyName === "async" && !this.hasPrecedingLineBreak()) {
isAsync = true;
this.resetPreviousNodeTrailingComments(key);
isGenerator = this.eat(55);
this.parsePropertyName(prop);
}
if (keyName === "get" || keyName === "set") {
isAccessor = true;
this.resetPreviousNodeTrailingComments(key);
prop.kind = keyName;
if (this.match(55)) {
isGenerator = true;
this.raise(Errors.AccessorIsGenerator, this.state.curPosition(), {
kind: keyName
});
this.next();
}
this.parsePropertyName(prop);
}
}
return this.parseObjPropValue(prop, startLoc, isGenerator, isAsync, false, isAccessor, refExpressionErrors);
}
getGetterSetterExpectedParamCount(method) {
return method.kind === "get" ? 0 : 1;
}
getObjectOrClassMethodParams(method) {
return method.params;
}
checkGetterSetterParams(method) {
var _params;
const paramCount = this.getGetterSetterExpectedParamCount(method);
const params = this.getObjectOrClassMethodParams(method);
if (params.length !== paramCount) {
this.raise(method.kind === "get" ? Errors.BadGetterArity : Errors.BadSetterArity, method);
}
if (method.kind === "set" && ((_params = params[params.length - 1]) == null ? void 0 : _params.type) === "RestElement") {
this.raise(Errors.BadSetterRestParameter, method);
}
}
parseObjectMethod(prop, isGenerator, isAsync, isPattern, isAccessor) {
if (isAccessor) {
const finishedProp = this.parseMethod(prop, isGenerator, false, false, false, "ObjectMethod");
this.checkGetterSetterParams(finishedProp);
return finishedProp;
}
if (isAsync || isGenerator || this.match(10)) {
if (isPattern) this.unexpected();
prop.kind = "method";
prop.method = true;
return this.parseMethod(prop, isGenerator, isAsync, false, false, "ObjectMethod");
}
}
parseObjectProperty(prop, startLoc, isPattern, refExpressionErrors) {
prop.shorthand = false;
if (this.eat(14)) {
prop.value = isPattern ? this.parseMaybeDefault(this.state.startLoc) : this.parseMaybeAssignAllowIn(refExpressionErrors);
return this.finishNode(prop, "ObjectProperty");
}
if (!prop.computed && prop.key.type === "Identifier") {
this.checkReservedWord(prop.key.name, prop.key.loc.start, true, false);
if (isPattern) {
prop.value = this.parseMaybeDefault(startLoc, cloneIdentifier(prop.key));
} else if (this.match(29)) {
const shorthandAssignLoc = this.state.startLoc;
if (refExpressionErrors != null) {
if (refExpressionErrors.shorthandAssignLoc === null) {
refExpressionErrors.shorthandAssignLoc = shorthandAssignLoc;
}
} else {
this.raise(Errors.InvalidCoverInitializedName, shorthandAssignLoc);
}
prop.value = this.parseMaybeDefault(startLoc, cloneIdentifier(prop.key));
} else {
prop.value = cloneIdentifier(prop.key);
}
prop.shorthand = true;
return this.finishNode(prop, "ObjectProperty");
}
}
parseObjPropValue(prop, startLoc, isGenerator, isAsync, isPattern, isAccessor, refExpressionErrors) {
const node = this.parseObjectMethod(prop, isGenerator, isAsync, isPattern, isAccessor) || this.parseObjectProperty(prop, startLoc, isPattern, refExpressionErrors);
if (!node) this.unexpected();
return node;
}
parsePropertyName(prop, refExpressionErrors) {
if (this.eat(0)) {
prop.computed = true;
prop.key = this.parseMaybeAssignAllowIn();
this.expect(3);
} else {
const {
type,
value
} = this.state;
let key;
if (tokenIsKeywordOrIdentifier(type)) {
key = this.parseIdentifier(true);
} else {
switch (type) {
case 135:
key = this.parseNumericLiteral(value);
break;
case 134:
key = this.parseStringLiteral(value);
break;
case 136:
key = this.parseBigIntLiteral(value);
break;
case 139:
{
const privateKeyLoc = this.state.startLoc;
if (refExpressionErrors != null) {
if (refExpressionErrors.privateKeyLoc === null) {
refExpressionErrors.privateKeyLoc = privateKeyLoc;
}
} else {
this.raise(Errors.UnexpectedPrivateField, privateKeyLoc);
}
key = this.parsePrivateName();
break;
}
default:
if (type === 137) {
key = this.parseDecimalLiteral(value);
break;
}
this.unexpected();
}
}
prop.key = key;
if (type !== 139) {
prop.computed = false;
}
}
}
initFunction(node, isAsync) {
node.id = null;
node.generator = false;
node.async = isAsync;
}
parseMethod(node, isGenerator, isAsync, isConstructor, allowDirectSuper, type, inClassScope = false) {
this.initFunction(node, isAsync);
node.generator = isGenerator;
this.scope.enter(2 | 16 | (inClassScope ? 64 : 0) | (allowDirectSuper ? 32 : 0));
this.prodParam.enter(functionFlags(isAsync, node.generator));
this.parseFunctionParams(node, isConstructor);
const finishedNode = this.parseFunctionBodyAndFinish(node, type, true);
this.prodParam.exit();
this.scope.exit();
return finishedNode;
}
parseArrayLike(close, canBePattern, isTuple, refExpressionErrors) {
if (isTuple) {
this.expectPlugin("recordAndTuple");
}
const oldInFSharpPipelineDirectBody = this.state.inFSharpPipelineDirectBody;
this.state.inFSharpPipelineDirectBody = false;
const node = this.startNode();
this.next();
node.elements = this.parseExprList(close, !isTuple, refExpressionErrors, node);
this.state.inFSharpPipelineDirectBody = oldInFSharpPipelineDirectBody;
return this.finishNode(node, isTuple ? "TupleExpression" : "ArrayExpression");
}
parseArrowExpression(node, params, isAsync, trailingCommaLoc) {
this.scope.enter(2 | 4);
let flags = functionFlags(isAsync, false);
if (!this.match(5) && this.prodParam.hasIn) {
flags |= 8;
}
this.prodParam.enter(flags);
this.initFunction(node, isAsync);
const oldMaybeInArrowParameters = this.state.maybeInArrowParameters;
if (params) {
this.state.maybeInArrowParameters = true;
this.setArrowFunctionParameters(node, params, trailingCommaLoc);
}
this.state.maybeInArrowParameters = false;
this.parseFunctionBody(node, true);
this.prodParam.exit();
this.scope.exit();
this.state.maybeInArrowParameters = oldMaybeInArrowParameters;
return this.finishNode(node, "ArrowFunctionExpression");
}
setArrowFunctionParameters(node, params, trailingCommaLoc) {
this.toAssignableList(params, trailingCommaLoc, false);
node.params = params;
}
parseFunctionBodyAndFinish(node, type, isMethod = false) {
this.parseFunctionBody(node, false, isMethod);
return this.finishNode(node, type);
}
parseFunctionBody(node, allowExpression, isMethod = false) {
const isExpression = allowExpression && !this.match(5);
this.expressionScope.enter(newExpressionScope());
if (isExpression) {
node.body = this.parseMaybeAssign();
this.checkParams(node, false, allowExpression, false);
} else {
const oldStrict = this.state.strict;
const oldLabels = this.state.labels;
this.state.labels = [];
this.prodParam.enter(this.prodParam.currentFlags() | 4);
node.body = this.parseBlock(true, false, hasStrictModeDirective => {
const nonSimple = !this.isSimpleParamList(node.params);
if (hasStrictModeDirective && nonSimple) {
this.raise(Errors.IllegalLanguageModeDirective, (node.kind === "method" || node.kind === "constructor") && !!node.key ? node.key.loc.end : node);
}
const strictModeChanged = !oldStrict && this.state.strict;
this.checkParams(node, !this.state.strict && !allowExpression && !isMethod && !nonSimple, allowExpression, strictModeChanged);
if (this.state.strict && node.id) {
this.checkIdentifier(node.id, 65, strictModeChanged);
}
});
this.prodParam.exit();
this.state.labels = oldLabels;
}
this.expressionScope.exit();
}
isSimpleParameter(node) {
return node.type === "Identifier";
}
isSimpleParamList(params) {
for (let i = 0, len = params.length; i < len; i++) {
if (!this.isSimpleParameter(params[i])) return false;
}
return true;
}
checkParams(node, allowDuplicates, isArrowFunction, strictModeChanged = true) {
const checkClashes = !allowDuplicates && new Set();
const formalParameters = {
type: "FormalParameters"
};
for (const param of node.params) {
this.checkLVal(param, formalParameters, 5, checkClashes, strictModeChanged);
}
}
parseExprList(close, allowEmpty, refExpressionErrors, nodeForExtra) {
const elts = [];
let first = true;
while (!this.eat(close)) {
if (first) {
first = false;
} else {
this.expect(12);
if (this.match(close)) {
if (nodeForExtra) {
this.addTrailingCommaExtraToNode(nodeForExtra);
}
this.next();
break;
}
}
elts.push(this.parseExprListItem(allowEmpty, refExpressionErrors));
}
return elts;
}
parseExprListItem(allowEmpty, refExpressionErrors, allowPlaceholder) {
let elt;
if (this.match(12)) {
if (!allowEmpty) {
this.raise(Errors.UnexpectedToken, this.state.curPosition(), {
unexpected: ","
});
}
elt = null;
} else if (this.match(21)) {
const spreadNodeStartLoc = this.state.startLoc;
elt = this.parseParenItem(this.parseSpread(refExpressionErrors), spreadNodeStartLoc);
} else if (this.match(17)) {
this.expectPlugin("partialApplication");
if (!allowPlaceholder) {
this.raise(Errors.UnexpectedArgumentPlaceholder, this.state.startLoc);
}
const node = this.startNode();
this.next();
elt = this.finishNode(node, "ArgumentPlaceholder");
} else {
elt = this.parseMaybeAssignAllowIn(refExpressionErrors, this.parseParenItem);
}
return elt;
}
parseIdentifier(liberal) {
const node = this.startNode();
const name = this.parseIdentifierName(liberal);
return this.createIdentifier(node, name);
}
createIdentifier(node, name) {
node.name = name;
node.loc.identifierName = name;
return this.finishNode(node, "Identifier");
}
parseIdentifierName(liberal) {
let name;
const {
startLoc,
type
} = this.state;
if (tokenIsKeywordOrIdentifier(type)) {
name = this.state.value;
} else {
this.unexpected();
}
const tokenIsKeyword = tokenKeywordOrIdentifierIsKeyword(type);
if (liberal) {
if (tokenIsKeyword) {
this.replaceToken(132);
}
} else {
this.checkReservedWord(name, startLoc, tokenIsKeyword, false);
}
this.next();
return name;
}
checkReservedWord(word, startLoc, checkKeywords, isBinding) {
if (word.length > 10) {
return;
}
if (!canBeReservedWord(word)) {
return;
}
if (checkKeywords && isKeyword(word)) {
this.raise(Errors.UnexpectedKeyword, startLoc, {
keyword: word
});
return;
}
const reservedTest = !this.state.strict ? isReservedWord : isBinding ? isStrictBindReservedWord : isStrictReservedWord;
if (reservedTest(word, this.inModule)) {
this.raise(Errors.UnexpectedReservedWord, startLoc, {
reservedWord: word
});
return;
} else if (word === "yield") {
if (this.prodParam.hasYield) {
this.raise(Errors.YieldBindingIdentifier, startLoc);
return;
}
} else if (word === "await") {
if (this.prodParam.hasAwait) {
this.raise(Errors.AwaitBindingIdentifier, startLoc);
return;
}
if (this.scope.inStaticBlock) {
this.raise(Errors.AwaitBindingIdentifierInStaticBlock, startLoc);
return;
}
this.expressionScope.recordAsyncArrowParametersError(startLoc);
} else if (word === "arguments") {
if (this.scope.inClassAndNotInNonArrowFunction) {
this.raise(Errors.ArgumentsInClass, startLoc);
return;
}
}
}
recordAwaitIfAllowed() {
const isAwaitAllowed = this.prodParam.hasAwait || this.optionFlags & 1 && !this.scope.inFunction;
if (isAwaitAllowed && !this.scope.inFunction) {
this.state.hasTopLevelAwait = true;
}
return isAwaitAllowed;
}
parseAwait(startLoc) {
const node = this.startNodeAt(startLoc);
this.expressionScope.recordParameterInitializerError(Errors.AwaitExpressionFormalParameter, node);
if (this.eat(55)) {
this.raise(Errors.ObsoleteAwaitStar, node);
}
if (!this.scope.inFunction && !(this.optionFlags & 1)) {
if (this.isAmbiguousPrefixOrIdentifier()) {
this.ambiguousScriptDifferentAst = true;
} else {
this.sawUnambiguousESM = true;
}
}
if (!this.state.soloAwait) {
node.argument = this.parseMaybeUnary(null, true);
}
return this.finishNode(node, "AwaitExpression");
}
isAmbiguousPrefixOrIdentifier() {
if (this.hasPrecedingLineBreak()) return true;
const {
type
} = this.state;
return type === 53 || type === 10 || type === 0 || tokenIsTemplate(type) || type === 102 && !this.state.containsEsc || type === 138 || type === 56 || this.hasPlugin("v8intrinsic") && type === 54;
}
parseYield(startLoc) {
const node = this.startNodeAt(startLoc);
this.expressionScope.recordParameterInitializerError(Errors.YieldInParameter, node);
let delegating = false;
let argument = null;
if (!this.hasPrecedingLineBreak()) {
delegating = this.eat(55);
switch (this.state.type) {
case 13:
case 140:
case 8:
case 11:
case 3:
case 9:
case 14:
case 12:
if (!delegating) break;
default:
argument = this.parseMaybeAssign();
}
}
node.delegate = delegating;
node.argument = argument;
return this.finishNode(node, "YieldExpression");
}
parseImportCall(node) {
this.next();
node.source = this.parseMaybeAssignAllowIn();
node.options = null;
if (this.eat(12)) {
if (!this.match(11)) {
node.options = this.parseMaybeAssignAllowIn();
if (this.eat(12) && !this.match(11)) {
do {
this.parseMaybeAssignAllowIn();
} while (this.eat(12) && !this.match(11));
this.raise(Errors.ImportCallArity, node);
}
}
}
this.expect(11);
return this.finishNode(node, "ImportExpression");
}
checkPipelineAtInfixOperator(left, leftStartLoc) {
if (this.hasPlugin(["pipelineOperator", {
proposal: "smart"
}])) {
if (left.type === "SequenceExpression") {
this.raise(Errors.PipelineHeadSequenceExpression, leftStartLoc);
}
}
}
parseSmartPipelineBodyInStyle(childExpr, startLoc) {
if (this.isSimpleReference(childExpr)) {
const bodyNode = this.startNodeAt(startLoc);
bodyNode.callee = childExpr;
return this.finishNode(bodyNode, "PipelineBareFunction");
} else {
const bodyNode = this.startNodeAt(startLoc);
this.checkSmartPipeTopicBodyEarlyErrors(startLoc);
bodyNode.expression = childExpr;
return this.finishNode(bodyNode, "PipelineTopicExpression");
}
}
isSimpleReference(expression) {
switch (expression.type) {
case "MemberExpression":
return !expression.computed && this.isSimpleReference(expression.object);
case "Identifier":
return true;
default:
return false;
}
}
checkSmartPipeTopicBodyEarlyErrors(startLoc) {
if (this.match(19)) {
throw this.raise(Errors.PipelineBodyNoArrow, this.state.startLoc);
}
if (!this.topicReferenceWasUsedInCurrentContext()) {
this.raise(Errors.PipelineTopicUnused, startLoc);
}
}
withTopicBindingContext(callback) {
const outerContextTopicState = this.state.topicContext;
this.state.topicContext = {
maxNumOfResolvableTopics: 1,
maxTopicIndex: null
};
try {
return callback();
} finally {
this.state.topicContext = outerContextTopicState;
}
}
withSmartMixTopicForbiddingContext(callback) {
if (this.hasPlugin(["pipelineOperator", {
proposal: "smart"
}])) {
const outerContextTopicState = this.state.topicContext;
this.state.topicContext = {
maxNumOfResolvableTopics: 0,
maxTopicIndex: null
};
try {
return callback();
} finally {
this.state.topicContext = outerContextTopicState;
}
} else {
return callback();
}
}
withSoloAwaitPermittingContext(callback) {
const outerContextSoloAwaitState = this.state.soloAwait;
this.state.soloAwait = true;
try {
return callback();
} finally {
this.state.soloAwait = outerContextSoloAwaitState;
}
}
allowInAnd(callback) {
const flags = this.prodParam.currentFlags();
const prodParamToSet = 8 & ~flags;
if (prodParamToSet) {
this.prodParam.enter(flags | 8);
try {
return callback();
} finally {
this.prodParam.exit();
}
}
return callback();
}
disallowInAnd(callback) {
const flags = this.prodParam.currentFlags();
const prodParamToClear = 8 & flags;
if (prodParamToClear) {
this.prodParam.enter(flags & ~8);
try {
return callback();
} finally {
this.prodParam.exit();
}
}
return callback();
}
registerTopicReference() {
this.state.topicContext.maxTopicIndex = 0;
}
topicReferenceIsAllowedInCurrentContext() {
return this.state.topicContext.maxNumOfResolvableTopics >= 1;
}
topicReferenceWasUsedInCurrentContext() {
return this.state.topicContext.maxTopicIndex != null && this.state.topicContext.maxTopicIndex >= 0;
}
parseFSharpPipelineBody(prec) {
const startLoc = this.state.startLoc;
this.state.potentialArrowAt = this.state.start;
const oldInFSharpPipelineDirectBody = this.state.inFSharpPipelineDirectBody;
this.state.inFSharpPipelineDirectBody = true;
const ret = this.parseExprOp(this.parseMaybeUnaryOrPrivate(), startLoc, prec);
this.state.inFSharpPipelineDirectBody = oldInFSharpPipelineDirectBody;
return ret;
}
parseModuleExpression() {
this.expectPlugin("moduleBlocks");
const node = this.startNode();
this.next();
if (!this.match(5)) {
this.unexpected(null, 5);
}
const program = this.startNodeAt(this.state.endLoc);
this.next();
const revertScopes = this.initializeScopes(true);
this.enterInitialScopes();
try {
node.body = this.parseProgram(program, 8, "module");
} finally {
revertScopes();
}
return this.finishNode(node, "ModuleExpression");
}
parsePropertyNamePrefixOperator(prop) {}
}
const loopLabel = {
kind: 1
},
switchLabel = {
kind: 2
};
const loneSurrogate = /[\uD800-\uDFFF]/u;
const keywordRelationalOperator = /in(?:stanceof)?/y;
function babel7CompatTokens(tokens, input, startIndex) {
for (let i = 0; i < tokens.length; i++) {
const token = tokens[i];
const {
type
} = token;
if (typeof type === "number") {
{
if (type === 139) {
const {
loc,
start,
value,
end
} = token;
const hashEndPos = start + 1;
const hashEndLoc = createPositionWithColumnOffset(loc.start, 1);
tokens.splice(i, 1, new Token({
type: getExportedToken(27),
value: "#",
start: start,
end: hashEndPos,
startLoc: loc.start,
endLoc: hashEndLoc
}), new Token({
type: getExportedToken(132),
value: value,
start: hashEndPos,
end: end,
startLoc: hashEndLoc,
endLoc: loc.end
}));
i++;
continue;
}
if (tokenIsTemplate(type)) {
const {
loc,
start,
value,
end
} = token;
const backquoteEnd = start + 1;
const backquoteEndLoc = createPositionWithColumnOffset(loc.start, 1);
let startToken;
if (input.charCodeAt(start - startIndex) === 96) {
startToken = new Token({
type: getExportedToken(22),
value: "`",
start: start,
end: backquoteEnd,
startLoc: loc.start,
endLoc: backquoteEndLoc
});
} else {
startToken = new Token({
type: getExportedToken(8),
value: "}",
start: start,
end: backquoteEnd,
startLoc: loc.start,
endLoc: backquoteEndLoc
});
}
let templateValue, templateElementEnd, templateElementEndLoc, endToken;
if (type === 24) {
templateElementEnd = end - 1;
templateElementEndLoc = createPositionWithColumnOffset(loc.end, -1);
templateValue = value === null ? null : value.slice(1, -1);
endToken = new Token({
type: getExportedToken(22),
value: "`",
start: templateElementEnd,
end: end,
startLoc: templateElementEndLoc,
endLoc: loc.end
});
} else {
templateElementEnd = end - 2;
templateElementEndLoc = createPositionWithColumnOffset(loc.end, -2);
templateValue = value === null ? null : value.slice(1, -2);
endToken = new Token({
type: getExportedToken(23),
value: "${",
start: templateElementEnd,
end: end,
startLoc: templateElementEndLoc,
endLoc: loc.end
});
}
tokens.splice(i, 1, startToken, new Token({
type: getExportedToken(20),
value: templateValue,
start: backquoteEnd,
end: templateElementEnd,
startLoc: backquoteEndLoc,
endLoc: templateElementEndLoc
}), endToken);
i += 2;
continue;
}
}
token.type = getExportedToken(type);
}
}
return tokens;
}
class StatementParser extends ExpressionParser {
parseTopLevel(file, program) {
file.program = this.parseProgram(program);
file.comments = this.comments;
if (this.optionFlags & 256) {
file.tokens = babel7CompatTokens(this.tokens, this.input, this.startIndex);
}
return this.finishNode(file, "File");
}
parseProgram(program, end = 140, sourceType = this.options.sourceType) {
program.sourceType = sourceType;
program.interpreter = this.parseInterpreterDirective();
this.parseBlockBody(program, true, true, end);
if (this.inModule) {
if (!(this.optionFlags & 64) && this.scope.undefinedExports.size > 0) {
for (const [localName, at] of Array.from(this.scope.undefinedExports)) {
this.raise(Errors.ModuleExportUndefined, at, {
localName
});
}
}
this.addExtra(program, "topLevelAwait", this.state.hasTopLevelAwait);
}
let finishedProgram;
if (end === 140) {
finishedProgram = this.finishNode(program, "Program");
} else {
finishedProgram = this.finishNodeAt(program, "Program", createPositionWithColumnOffset(this.state.startLoc, -1));
}
return finishedProgram;
}
stmtToDirective(stmt) {
const directive = stmt;
directive.type = "Directive";
directive.value = directive.expression;
delete directive.expression;
const directiveLiteral = directive.value;
const expressionValue = directiveLiteral.value;
const raw = this.input.slice(this.offsetToSourcePos(directiveLiteral.start), this.offsetToSourcePos(directiveLiteral.end));
const val = directiveLiteral.value = raw.slice(1, -1);
this.addExtra(directiveLiteral, "raw", raw);
this.addExtra(directiveLiteral, "rawValue", val);
this.addExtra(directiveLiteral, "expressionValue", expressionValue);
directiveLiteral.type = "DirectiveLiteral";
return directive;
}
parseInterpreterDirective() {
if (!this.match(28)) {
return null;
}
const node = this.startNode();
node.value = this.state.value;
this.next();
return this.finishNode(node, "InterpreterDirective");
}
isLet() {
if (!this.isContextual(100)) {
return false;
}
return this.hasFollowingBindingAtom();
}
chStartsBindingIdentifier(ch, pos) {
if (isIdentifierStart(ch)) {
keywordRelationalOperator.lastIndex = pos;
if (keywordRelationalOperator.test(this.input)) {
const endCh = this.codePointAtPos(keywordRelationalOperator.lastIndex);
if (!isIdentifierChar(endCh) && endCh !== 92) {
return false;
}
}
return true;
} else if (ch === 92) {
return true;
} else {
return false;
}
}
chStartsBindingPattern(ch) {
return ch === 91 || ch === 123;
}
hasFollowingBindingAtom() {
const next = this.nextTokenStart();
const nextCh = this.codePointAtPos(next);
return this.chStartsBindingPattern(nextCh) || this.chStartsBindingIdentifier(nextCh, next);
}
hasInLineFollowingBindingIdentifierOrBrace() {
const next = this.nextTokenInLineStart();
const nextCh = this.codePointAtPos(next);
return nextCh === 123 || this.chStartsBindingIdentifier(nextCh, next);
}
startsUsingForOf() {
const {
type,
containsEsc
} = this.lookahead();
if (type === 102 && !containsEsc) {
return false;
} else if (tokenIsIdentifier(type) && !this.hasFollowingLineBreak()) {
this.expectPlugin("explicitResourceManagement");
return true;
}
}
startsAwaitUsing() {
let next = this.nextTokenInLineStart();
if (this.isUnparsedContextual(next, "using")) {
next = this.nextTokenInLineStartSince(next + 5);
const nextCh = this.codePointAtPos(next);
if (this.chStartsBindingIdentifier(nextCh, next)) {
this.expectPlugin("explicitResourceManagement");
return true;
}
}
return false;
}
parseModuleItem() {
return this.parseStatementLike(1 | 2 | 4 | 8);
}
parseStatementListItem() {
return this.parseStatementLike(2 | 4 | (!this.options.annexB || this.state.strict ? 0 : 8));
}
parseStatementOrSloppyAnnexBFunctionDeclaration(allowLabeledFunction = false) {
let flags = 0;
if (this.options.annexB && !this.state.strict) {
flags |= 4;
if (allowLabeledFunction) {
flags |= 8;
}
}
return this.parseStatementLike(flags);
}
parseStatement() {
return this.parseStatementLike(0);
}
parseStatementLike(flags) {
let decorators = null;
if (this.match(26)) {
decorators = this.parseDecorators(true);
}
return this.parseStatementContent(flags, decorators);
}
parseStatementContent(flags, decorators) {
const startType = this.state.type;
const node = this.startNode();
const allowDeclaration = !!(flags & 2);
const allowFunctionDeclaration = !!(flags & 4);
const topLevel = flags & 1;
switch (startType) {
case 60:
return this.parseBreakContinueStatement(node, true);
case 63:
return this.parseBreakContinueStatement(node, false);
case 64:
return this.parseDebuggerStatement(node);
case 90:
return this.parseDoWhileStatement(node);
case 91:
return this.parseForStatement(node);
case 68:
if (this.lookaheadCharCode() === 46) break;
if (!allowFunctionDeclaration) {
this.raise(this.state.strict ? Errors.StrictFunction : this.options.annexB ? Errors.SloppyFunctionAnnexB : Errors.SloppyFunction, this.state.startLoc);
}
return this.parseFunctionStatement(node, false, !allowDeclaration && allowFunctionDeclaration);
case 80:
if (!allowDeclaration) this.unexpected();
return this.parseClass(this.maybeTakeDecorators(decorators, node), true);
case 69:
return this.parseIfStatement(node);
case 70:
return this.parseReturnStatement(node);
case 71:
return this.parseSwitchStatement(node);
case 72:
return this.parseThrowStatement(node);
case 73:
return this.parseTryStatement(node);
case 96:
if (!this.state.containsEsc && this.startsAwaitUsing()) {
if (!this.recordAwaitIfAllowed()) {
this.raise(Errors.AwaitUsingNotInAsyncContext, node);
} else if (!allowDeclaration) {
this.raise(Errors.UnexpectedLexicalDeclaration, node);
}
this.next();
return this.parseVarStatement(node, "await using");
}
break;
case 107:
if (this.state.containsEsc || !this.hasInLineFollowingBindingIdentifierOrBrace()) {
break;
}
this.expectPlugin("explicitResourceManagement");
if (!this.scope.inModule && this.scope.inTopLevel) {
this.raise(Errors.UnexpectedUsingDeclaration, this.state.startLoc);
} else if (!allowDeclaration) {
this.raise(Errors.UnexpectedLexicalDeclaration, this.state.startLoc);
}
return this.parseVarStatement(node, "using");
case 100:
{
if (this.state.containsEsc) {
break;
}
const next = this.nextTokenStart();
const nextCh = this.codePointAtPos(next);
if (nextCh !== 91) {
if (!allowDeclaration && this.hasFollowingLineBreak()) break;
if (!this.chStartsBindingIdentifier(nextCh, next) && nextCh !== 123) {
break;
}
}
}
case 75:
{
if (!allowDeclaration) {
this.raise(Errors.UnexpectedLexicalDeclaration, this.state.startLoc);
}
}
case 74:
{
const kind = this.state.value;
return this.parseVarStatement(node, kind);
}
case 92:
return this.parseWhileStatement(node);
case 76:
return this.parseWithStatement(node);
case 5:
return this.parseBlock();
case 13:
return this.parseEmptyStatement(node);
case 83:
{
const nextTokenCharCode = this.lookaheadCharCode();
if (nextTokenCharCode === 40 || nextTokenCharCode === 46) {
break;
}
}
case 82:
{
if (!(this.optionFlags & 8) && !topLevel) {
this.raise(Errors.UnexpectedImportExport, this.state.startLoc);
}
this.next();
let result;
if (startType === 83) {
result = this.parseImport(node);
} else {
result = this.parseExport(node, decorators);
}
this.assertModuleNodeAllowed(result);
return result;
}
default:
{
if (this.isAsyncFunction()) {
if (!allowDeclaration) {
this.raise(Errors.AsyncFunctionInSingleStatementContext, this.state.startLoc);
}
this.next();
return this.parseFunctionStatement(node, true, !allowDeclaration && allowFunctionDeclaration);
}
}
}
const maybeName = this.state.value;
const expr = this.parseExpression();
if (tokenIsIdentifier(startType) && expr.type === "Identifier" && this.eat(14)) {
return this.parseLabeledStatement(node, maybeName, expr, flags);
} else {
return this.parseExpressionStatement(node, expr, decorators);
}
}
assertModuleNodeAllowed(node) {
if (!(this.optionFlags & 8) && !this.inModule) {
this.raise(Errors.ImportOutsideModule, node);
}
}
decoratorsEnabledBeforeExport() {
if (this.hasPlugin("decorators-legacy")) return true;
return this.hasPlugin("decorators") && this.getPluginOption("decorators", "decoratorsBeforeExport") !== false;
}
maybeTakeDecorators(maybeDecorators, classNode, exportNode) {
if (maybeDecorators) {
var _classNode$decorators;
if ((_classNode$decorators = classNode.decorators) != null && _classNode$decorators.length) {
if (typeof this.getPluginOption("decorators", "decoratorsBeforeExport") !== "boolean") {
this.raise(Errors.DecoratorsBeforeAfterExport, classNode.decorators[0]);
}
classNode.decorators.unshift(...maybeDecorators);
} else {
classNode.decorators = maybeDecorators;
}
this.resetStartLocationFromNode(classNode, maybeDecorators[0]);
if (exportNode) this.resetStartLocationFromNode(exportNode, classNode);
}
return classNode;
}
canHaveLeadingDecorator() {
return this.match(80);
}
parseDecorators(allowExport) {
const decorators = [];
do {
decorators.push(this.parseDecorator());
} while (this.match(26));
if (this.match(82)) {
if (!allowExport) {
this.unexpected();
}
if (!this.decoratorsEnabledBeforeExport()) {
this.raise(Errors.DecoratorExportClass, this.state.startLoc);
}
} else if (!this.canHaveLeadingDecorator()) {
throw this.raise(Errors.UnexpectedLeadingDecorator, this.state.startLoc);
}
return decorators;
}
parseDecorator() {
this.expectOnePlugin(["decorators", "decorators-legacy"]);
const node = this.startNode();
this.next();
if (this.hasPlugin("decorators")) {
const startLoc = this.state.startLoc;
let expr;
if (this.match(10)) {
const startLoc = this.state.startLoc;
this.next();
expr = this.parseExpression();
this.expect(11);
expr = this.wrapParenthesis(startLoc, expr);
const paramsStartLoc = this.state.startLoc;
node.expression = this.parseMaybeDecoratorArguments(expr, startLoc);
if (this.getPluginOption("decorators", "allowCallParenthesized") === false && node.expression !== expr) {
this.raise(Errors.DecoratorArgumentsOutsideParentheses, paramsStartLoc);
}
} else {
expr = this.parseIdentifier(false);
while (this.eat(16)) {
const node = this.startNodeAt(startLoc);
node.object = expr;
if (this.match(139)) {
this.classScope.usePrivateName(this.state.value, this.state.startLoc);
node.property = this.parsePrivateName();
} else {
node.property = this.parseIdentifier(true);
}
node.computed = false;
expr = this.finishNode(node, "MemberExpression");
}
node.expression = this.parseMaybeDecoratorArguments(expr, startLoc);
}
} else {
node.expression = this.parseExprSubscripts();
}
return this.finishNode(node, "Decorator");
}
parseMaybeDecoratorArguments(expr, startLoc) {
if (this.eat(10)) {
const node = this.startNodeAt(startLoc);
node.callee = expr;
node.arguments = this.parseCallExpressionArguments(11);
this.toReferencedList(node.arguments);
return this.finishNode(node, "CallExpression");
}
return expr;
}
parseBreakContinueStatement(node, isBreak) {
this.next();
if (this.isLineTerminator()) {
node.label = null;
} else {
node.label = this.parseIdentifier();
this.semicolon();
}
this.verifyBreakContinue(node, isBreak);
return this.finishNode(node, isBreak ? "BreakStatement" : "ContinueStatement");
}
verifyBreakContinue(node, isBreak) {
let i;
for (i = 0; i < this.state.labels.length; ++i) {
const lab = this.state.labels[i];
if (node.label == null || lab.name === node.label.name) {
if (lab.kind != null && (isBreak || lab.kind === 1)) {
break;
}
if (node.label && isBreak) break;
}
}
if (i === this.state.labels.length) {
const type = isBreak ? "BreakStatement" : "ContinueStatement";
this.raise(Errors.IllegalBreakContinue, node, {
type
});
}
}
parseDebuggerStatement(node) {
this.next();
this.semicolon();
return this.finishNode(node, "DebuggerStatement");
}
parseHeaderExpression() {
this.expect(10);
const val = this.parseExpression();
this.expect(11);
return val;
}
parseDoWhileStatement(node) {
this.next();
this.state.labels.push(loopLabel);
node.body = this.withSmartMixTopicForbiddingContext(() => this.parseStatement());
this.state.labels.pop();
this.expect(92);
node.test = this.parseHeaderExpression();
this.eat(13);
return this.finishNode(node, "DoWhileStatement");
}
parseForStatement(node) {
this.next();
this.state.labels.push(loopLabel);
let awaitAt = null;
if (this.isContextual(96) && this.recordAwaitIfAllowed()) {
awaitAt = this.state.startLoc;
this.next();
}
this.scope.enter(0);
this.expect(10);
if (this.match(13)) {
if (awaitAt !== null) {
this.unexpected(awaitAt);
}
return this.parseFor(node, null);
}
const startsWithLet = this.isContextual(100);
{
const startsWithAwaitUsing = this.isContextual(96) && this.startsAwaitUsing();
const starsWithUsingDeclaration = startsWithAwaitUsing || this.isContextual(107) && this.startsUsingForOf();
const isLetOrUsing = startsWithLet && this.hasFollowingBindingAtom() || starsWithUsingDeclaration;
if (this.match(74) || this.match(75) || isLetOrUsing) {
const initNode = this.startNode();
let kind;
if (startsWithAwaitUsing) {
kind = "await using";
if (!this.recordAwaitIfAllowed()) {
this.raise(Errors.AwaitUsingNotInAsyncContext, this.state.startLoc);
}
this.next();
} else {
kind = this.state.value;
}
this.next();
this.parseVar(initNode, true, kind);
const init = this.finishNode(initNode, "VariableDeclaration");
const isForIn = this.match(58);
if (isForIn && starsWithUsingDeclaration) {
this.raise(Errors.ForInUsing, init);
}
if ((isForIn || this.isContextual(102)) && init.declarations.length === 1) {
return this.parseForIn(node, init, awaitAt);
}
if (awaitAt !== null) {
this.unexpected(awaitAt);
}
return this.parseFor(node, init);
}
}
const startsWithAsync = this.isContextual(95);
const refExpressionErrors = new ExpressionErrors();
const init = this.parseExpression(true, refExpressionErrors);
const isForOf = this.isContextual(102);
if (isForOf) {
if (startsWithLet) {
this.raise(Errors.ForOfLet, init);
}
if (awaitAt === null && startsWithAsync && init.type === "Identifier") {
this.raise(Errors.ForOfAsync, init);
}
}
if (isForOf || this.match(58)) {
this.checkDestructuringPrivate(refExpressionErrors);
this.toAssignable(init, true);
const type = isForOf ? "ForOfStatement" : "ForInStatement";
this.checkLVal(init, {
type
});
return this.parseForIn(node, init, awaitAt);
} else {
this.checkExpressionErrors(refExpressionErrors, true);
}
if (awaitAt !== null) {
this.unexpected(awaitAt);
}
return this.parseFor(node, init);
}
parseFunctionStatement(node, isAsync, isHangingDeclaration) {
this.next();
return this.parseFunction(node, 1 | (isHangingDeclaration ? 2 : 0) | (isAsync ? 8 : 0));
}
parseIfStatement(node) {
this.next();
node.test = this.parseHeaderExpression();
node.consequent = this.parseStatementOrSloppyAnnexBFunctionDeclaration();
node.alternate = this.eat(66) ? this.parseStatementOrSloppyAnnexBFunctionDeclaration() : null;
return this.finishNode(node, "IfStatement");
}
parseReturnStatement(node) {
if (!this.prodParam.hasReturn && !(this.optionFlags & 2)) {
this.raise(Errors.IllegalReturn, this.state.startLoc);
}
this.next();
if (this.isLineTerminator()) {
node.argument = null;
} else {
node.argument = this.parseExpression();
this.semicolon();
}
return this.finishNode(node, "ReturnStatement");
}
parseSwitchStatement(node) {
this.next();
node.discriminant = this.parseHeaderExpression();
const cases = node.cases = [];
this.expect(5);
this.state.labels.push(switchLabel);
this.scope.enter(0);
let cur;
for (let sawDefault; !this.match(8);) {
if (this.match(61) || this.match(65)) {
const isCase = this.match(61);
if (cur) this.finishNode(cur, "SwitchCase");
cases.push(cur = this.startNode());
cur.consequent = [];
this.next();
if (isCase) {
cur.test = this.parseExpression();
} else {
if (sawDefault) {
this.raise(Errors.MultipleDefaultsInSwitch, this.state.lastTokStartLoc);
}
sawDefault = true;
cur.test = null;
}
this.expect(14);
} else {
if (cur) {
cur.consequent.push(this.parseStatementListItem());
} else {
this.unexpected();
}
}
}
this.scope.exit();
if (cur) this.finishNode(cur, "SwitchCase");
this.next();
this.state.labels.pop();
return this.finishNode(node, "SwitchStatement");
}
parseThrowStatement(node) {
this.next();
if (this.hasPrecedingLineBreak()) {
this.raise(Errors.NewlineAfterThrow, this.state.lastTokEndLoc);
}
node.argument = this.parseExpression();
this.semicolon();
return this.finishNode(node, "ThrowStatement");
}
parseCatchClauseParam() {
const param = this.parseBindingAtom();
this.scope.enter(this.options.annexB && param.type === "Identifier" ? 8 : 0);
this.checkLVal(param, {
type: "CatchClause"
}, 9);
return param;
}
parseTryStatement(node) {
this.next();
node.block = this.parseBlock();
node.handler = null;
if (this.match(62)) {
const clause = this.startNode();
this.next();
if (this.match(10)) {
this.expect(10);
clause.param = this.parseCatchClauseParam();
this.expect(11);
} else {
clause.param = null;
this.scope.enter(0);
}
clause.body = this.withSmartMixTopicForbiddingContext(() => this.parseBlock(false, false));
this.scope.exit();
node.handler = this.finishNode(clause, "CatchClause");
}
node.finalizer = this.eat(67) ? this.parseBlock() : null;
if (!node.handler && !node.finalizer) {
this.raise(Errors.NoCatchOrFinally, node);
}
return this.finishNode(node, "TryStatement");
}
parseVarStatement(node, kind, allowMissingInitializer = false) {
this.next();
this.parseVar(node, false, kind, allowMissingInitializer);
this.semicolon();
return this.finishNode(node, "VariableDeclaration");
}
parseWhileStatement(node) {
this.next();
node.test = this.parseHeaderExpression();
this.state.labels.push(loopLabel);
node.body = this.withSmartMixTopicForbiddingContext(() => this.parseStatement());
this.state.labels.pop();
return this.finishNode(node, "WhileStatement");
}
parseWithStatement(node) {
if (this.state.strict) {
this.raise(Errors.StrictWith, this.state.startLoc);
}
this.next();
node.object = this.parseHeaderExpression();
node.body = this.withSmartMixTopicForbiddingContext(() => this.parseStatement());
return this.finishNode(node, "WithStatement");
}
parseEmptyStatement(node) {
this.next();
return this.finishNode(node, "EmptyStatement");
}
parseLabeledStatement(node, maybeName, expr, flags) {
for (const label of this.state.labels) {
if (label.name === maybeName) {
this.raise(Errors.LabelRedeclaration, expr, {
labelName: maybeName
});
}
}
const kind = tokenIsLoop(this.state.type) ? 1 : this.match(71) ? 2 : null;
for (let i = this.state.labels.length - 1; i >= 0; i--) {
const label = this.state.labels[i];
if (label.statementStart === node.start) {
label.statementStart = this.sourceToOffsetPos(this.state.start);
label.kind = kind;
} else {
break;
}
}
this.state.labels.push({
name: maybeName,
kind: kind,
statementStart: this.sourceToOffsetPos(this.state.start)
});
node.body = flags & 8 ? this.parseStatementOrSloppyAnnexBFunctionDeclaration(true) : this.parseStatement();
this.state.labels.pop();
node.label = expr;
return this.finishNode(node, "LabeledStatement");
}
parseExpressionStatement(node, expr, decorators) {
node.expression = expr;
this.semicolon();
return this.finishNode(node, "ExpressionStatement");
}
parseBlock(allowDirectives = false, createNewLexicalScope = true, afterBlockParse) {
const node = this.startNode();
if (allowDirectives) {
this.state.strictErrors.clear();
}
this.expect(5);
if (createNewLexicalScope) {
this.scope.enter(0);
}
this.parseBlockBody(node, allowDirectives, false, 8, afterBlockParse);
if (createNewLexicalScope) {
this.scope.exit();
}
return this.finishNode(node, "BlockStatement");
}
isValidDirective(stmt) {
return stmt.type === "ExpressionStatement" && stmt.expression.type === "StringLiteral" && !stmt.expression.extra.parenthesized;
}
parseBlockBody(node, allowDirectives, topLevel, end, afterBlockParse) {
const body = node.body = [];
const directives = node.directives = [];
this.parseBlockOrModuleBlockBody(body, allowDirectives ? directives : undefined, topLevel, end, afterBlockParse);
}
parseBlockOrModuleBlockBody(body, directives, topLevel, end, afterBlockParse) {
const oldStrict = this.state.strict;
let hasStrictModeDirective = false;
let parsedNonDirective = false;
while (!this.match(end)) {
const stmt = topLevel ? this.parseModuleItem() : this.parseStatementListItem();
if (directives && !parsedNonDirective) {
if (this.isValidDirective(stmt)) {
const directive = this.stmtToDirective(stmt);
directives.push(directive);
if (!hasStrictModeDirective && directive.value.value === "use strict") {
hasStrictModeDirective = true;
this.setStrict(true);
}
continue;
}
parsedNonDirective = true;
this.state.strictErrors.clear();
}
body.push(stmt);
}
afterBlockParse == null || afterBlockParse.call(this, hasStrictModeDirective);
if (!oldStrict) {
this.setStrict(false);
}
this.next();
}
parseFor(node, init) {
node.init = init;
this.semicolon(false);
node.test = this.match(13) ? null : this.parseExpression();
this.semicolon(false);
node.update = this.match(11) ? null : this.parseExpression();
this.expect(11);
node.body = this.withSmartMixTopicForbiddingContext(() => this.parseStatement());
this.scope.exit();
this.state.labels.pop();
return this.finishNode(node, "ForStatement");
}
parseForIn(node, init, awaitAt) {
const isForIn = this.match(58);
this.next();
if (isForIn) {
if (awaitAt !== null) this.unexpected(awaitAt);
} else {
node.await = awaitAt !== null;
}
if (init.type === "VariableDeclaration" && init.declarations[0].init != null && (!isForIn || !this.options.annexB || this.state.strict || init.kind !== "var" || init.declarations[0].id.type !== "Identifier")) {
this.raise(Errors.ForInOfLoopInitializer, init, {
type: isForIn ? "ForInStatement" : "ForOfStatement"
});
}
if (init.type === "AssignmentPattern") {
this.raise(Errors.InvalidLhs, init, {
ancestor: {
type: "ForStatement"
}
});
}
node.left = init;
node.right = isForIn ? this.parseExpression() : this.parseMaybeAssignAllowIn();
this.expect(11);
node.body = this.withSmartMixTopicForbiddingContext(() => this.parseStatement());
this.scope.exit();
this.state.labels.pop();
return this.finishNode(node, isForIn ? "ForInStatement" : "ForOfStatement");
}
parseVar(node, isFor, kind, allowMissingInitializer = false) {
const declarations = node.declarations = [];
node.kind = kind;
for (;;) {
const decl = this.startNode();
this.parseVarId(decl, kind);
decl.init = !this.eat(29) ? null : isFor ? this.parseMaybeAssignDisallowIn() : this.parseMaybeAssignAllowIn();
if (decl.init === null && !allowMissingInitializer) {
if (decl.id.type !== "Identifier" && !(isFor && (this.match(58) || this.isContextual(102)))) {
this.raise(Errors.DeclarationMissingInitializer, this.state.lastTokEndLoc, {
kind: "destructuring"
});
} else if ((kind === "const" || kind === "using" || kind === "await using") && !(this.match(58) || this.isContextual(102))) {
this.raise(Errors.DeclarationMissingInitializer, this.state.lastTokEndLoc, {
kind
});
}
}
declarations.push(this.finishNode(decl, "VariableDeclarator"));
if (!this.eat(12)) break;
}
return node;
}
parseVarId(decl, kind) {
const id = this.parseBindingAtom();
if (kind === "using" || kind === "await using") {
if (id.type === "ArrayPattern" || id.type === "ObjectPattern") {
this.raise(Errors.UsingDeclarationHasBindingPattern, id.loc.start);
}
}
this.checkLVal(id, {
type: "VariableDeclarator"
}, kind === "var" ? 5 : 8201);
decl.id = id;
}
parseAsyncFunctionExpression(node) {
return this.parseFunction(node, 8);
}
parseFunction(node, flags = 0) {
const hangingDeclaration = flags & 2;
const isDeclaration = !!(flags & 1);
const requireId = isDeclaration && !(flags & 4);
const isAsync = !!(flags & 8);
this.initFunction(node, isAsync);
if (this.match(55)) {
if (hangingDeclaration) {
this.raise(Errors.GeneratorInSingleStatementContext, this.state.startLoc);
}
this.next();
node.generator = true;
}
if (isDeclaration) {
node.id = this.parseFunctionId(requireId);
}
const oldMaybeInArrowParameters = this.state.maybeInArrowParameters;
this.state.maybeInArrowParameters = false;
this.scope.enter(2);
this.prodParam.enter(functionFlags(isAsync, node.generator));
if (!isDeclaration) {
node.id = this.parseFunctionId();
}
this.parseFunctionParams(node, false);
this.withSmartMixTopicForbiddingContext(() => {
this.parseFunctionBodyAndFinish(node, isDeclaration ? "FunctionDeclaration" : "FunctionExpression");
});
this.prodParam.exit();
this.scope.exit();
if (isDeclaration && !hangingDeclaration) {
this.registerFunctionStatementId(node);
}
this.state.maybeInArrowParameters = oldMaybeInArrowParameters;
return node;
}
parseFunctionId(requireId) {
return requireId || tokenIsIdentifier(this.state.type) ? this.parseIdentifier() : null;
}
parseFunctionParams(node, isConstructor) {
this.expect(10);
this.expressionScope.enter(newParameterDeclarationScope());
node.params = this.parseBindingList(11, 41, 2 | (isConstructor ? 4 : 0));
this.expressionScope.exit();
}
registerFunctionStatementId(node) {
if (!node.id) return;
this.scope.declareName(node.id.name, !this.options.annexB || this.state.strict || node.generator || node.async ? this.scope.treatFunctionsAsVar ? 5 : 8201 : 17, node.id.loc.start);
}
parseClass(node, isStatement, optionalId) {
this.next();
const oldStrict = this.state.strict;
this.state.strict = true;
this.parseClassId(node, isStatement, optionalId);
this.parseClassSuper(node);
node.body = this.parseClassBody(!!node.superClass, oldStrict);
return this.finishNode(node, isStatement ? "ClassDeclaration" : "ClassExpression");
}
isClassProperty() {
return this.match(29) || this.match(13) || this.match(8);
}
isClassMethod() {
return this.match(10);
}
nameIsConstructor(key) {
return key.type === "Identifier" && key.name === "constructor" || key.type === "StringLiteral" && key.value === "constructor";
}
isNonstaticConstructor(method) {
return !method.computed && !method.static && this.nameIsConstructor(method.key);
}
parseClassBody(hadSuperClass, oldStrict) {
this.classScope.enter();
const state = {
hadConstructor: false,
hadSuperClass
};
let decorators = [];
const classBody = this.startNode();
classBody.body = [];
this.expect(5);
this.withSmartMixTopicForbiddingContext(() => {
while (!this.match(8)) {
if (this.eat(13)) {
if (decorators.length > 0) {
throw this.raise(Errors.DecoratorSemicolon, this.state.lastTokEndLoc);
}
continue;
}
if (this.match(26)) {
decorators.push(this.parseDecorator());
continue;
}
const member = this.startNode();
if (decorators.length) {
member.decorators = decorators;
this.resetStartLocationFromNode(member, decorators[0]);
decorators = [];
}
this.parseClassMember(classBody, member, state);
if (member.kind === "constructor" && member.decorators && member.decorators.length > 0) {
this.raise(Errors.DecoratorConstructor, member);
}
}
});
this.state.strict = oldStrict;
this.next();
if (decorators.length) {
throw this.raise(Errors.TrailingDecorator, this.state.startLoc);
}
this.classScope.exit();
return this.finishNode(classBody, "ClassBody");
}
parseClassMemberFromModifier(classBody, member) {
const key = this.parseIdentifier(true);
if (this.isClassMethod()) {
const method = member;
method.kind = "method";
method.computed = false;
method.key = key;
method.static = false;
this.pushClassMethod(classBody, method, false, false, false, false);
return true;
} else if (this.isClassProperty()) {
const prop = member;
prop.computed = false;
prop.key = key;
prop.static = false;
classBody.body.push(this.parseClassProperty(prop));
return true;
}
this.resetPreviousNodeTrailingComments(key);
return false;
}
parseClassMember(classBody, member, state) {
const isStatic = this.isContextual(106);
if (isStatic) {
if (this.parseClassMemberFromModifier(classBody, member)) {
return;
}
if (this.eat(5)) {
this.parseClassStaticBlock(classBody, member);
return;
}
}
this.parseClassMemberWithIsStatic(classBody, member, state, isStatic);
}
parseClassMemberWithIsStatic(classBody, member, state, isStatic) {
const publicMethod = member;
const privateMethod = member;
const publicProp = member;
const privateProp = member;
const accessorProp = member;
const method = publicMethod;
const publicMember = publicMethod;
member.static = isStatic;
this.parsePropertyNamePrefixOperator(member);
if (this.eat(55)) {
method.kind = "method";
const isPrivateName = this.match(139);
this.parseClassElementName(method);
if (isPrivateName) {
this.pushClassPrivateMethod(classBody, privateMethod, true, false);
return;
}
if (this.isNonstaticConstructor(publicMethod)) {
this.raise(Errors.ConstructorIsGenerator, publicMethod.key);
}
this.pushClassMethod(classBody, publicMethod, true, false, false, false);
return;
}
const isContextual = !this.state.containsEsc && tokenIsIdentifier(this.state.type);
const key = this.parseClassElementName(member);
const maybeContextualKw = isContextual ? key.name : null;
const isPrivate = this.isPrivateName(key);
const maybeQuestionTokenStartLoc = this.state.startLoc;
this.parsePostMemberNameModifiers(publicMember);
if (this.isClassMethod()) {
method.kind = "method";
if (isPrivate) {
this.pushClassPrivateMethod(classBody, privateMethod, false, false);
return;
}
const isConstructor = this.isNonstaticConstructor(publicMethod);
let allowsDirectSuper = false;
if (isConstructor) {
publicMethod.kind = "constructor";
if (state.hadConstructor && !this.hasPlugin("typescript")) {
this.raise(Errors.DuplicateConstructor, key);
}
if (isConstructor && this.hasPlugin("typescript") && member.override) {
this.raise(Errors.OverrideOnConstructor, key);
}
state.hadConstructor = true;
allowsDirectSuper = state.hadSuperClass;
}
this.pushClassMethod(classBody, publicMethod, false, false, isConstructor, allowsDirectSuper);
} else if (this.isClassProperty()) {
if (isPrivate) {
this.pushClassPrivateProperty(classBody, privateProp);
} else {
this.pushClassProperty(classBody, publicProp);
}
} else if (maybeContextualKw === "async" && !this.isLineTerminator()) {
this.resetPreviousNodeTrailingComments(key);
const isGenerator = this.eat(55);
if (publicMember.optional) {
this.unexpected(maybeQuestionTokenStartLoc);
}
method.kind = "method";
const isPrivate = this.match(139);
this.parseClassElementName(method);
this.parsePostMemberNameModifiers(publicMember);
if (isPrivate) {
this.pushClassPrivateMethod(classBody, privateMethod, isGenerator, true);
} else {
if (this.isNonstaticConstructor(publicMethod)) {
this.raise(Errors.ConstructorIsAsync, publicMethod.key);
}
this.pushClassMethod(classBody, publicMethod, isGenerator, true, false, false);
}
} else if ((maybeContextualKw === "get" || maybeContextualKw === "set") && !(this.match(55) && this.isLineTerminator())) {
this.resetPreviousNodeTrailingComments(key);
method.kind = maybeContextualKw;
const isPrivate = this.match(139);
this.parseClassElementName(publicMethod);
if (isPrivate) {
this.pushClassPrivateMethod(classBody, privateMethod, false, false);
} else {
if (this.isNonstaticConstructor(publicMethod)) {
this.raise(Errors.ConstructorIsAccessor, publicMethod.key);
}
this.pushClassMethod(classBody, publicMethod, false, false, false, false);
}
this.checkGetterSetterParams(publicMethod);
} else if (maybeContextualKw === "accessor" && !this.isLineTerminator()) {
this.expectPlugin("decoratorAutoAccessors");
this.resetPreviousNodeTrailingComments(key);
const isPrivate = this.match(139);
this.parseClassElementName(publicProp);
this.pushClassAccessorProperty(classBody, accessorProp, isPrivate);
} else if (this.isLineTerminator()) {
if (isPrivate) {
this.pushClassPrivateProperty(classBody, privateProp);
} else {
this.pushClassProperty(classBody, publicProp);
}
} else {
this.unexpected();
}
}
parseClassElementName(member) {
const {
type,
value
} = this.state;
if ((type === 132 || type === 134) && member.static && value === "prototype") {
this.raise(Errors.StaticPrototype, this.state.startLoc);
}
if (type === 139) {
if (value === "constructor") {
this.raise(Errors.ConstructorClassPrivateField, this.state.startLoc);
}
const key = this.parsePrivateName();
member.key = key;
return key;
}
this.parsePropertyName(member);
return member.key;
}
parseClassStaticBlock(classBody, member) {
var _member$decorators;
this.scope.enter(64 | 128 | 16);
const oldLabels = this.state.labels;
this.state.labels = [];
this.prodParam.enter(0);
const body = member.body = [];
this.parseBlockOrModuleBlockBody(body, undefined, false, 8);
this.prodParam.exit();
this.scope.exit();
this.state.labels = oldLabels;
classBody.body.push(this.finishNode(member, "StaticBlock"));
if ((_member$decorators = member.decorators) != null && _member$decorators.length) {
this.raise(Errors.DecoratorStaticBlock, member);
}
}
pushClassProperty(classBody, prop) {
if (!prop.computed && this.nameIsConstructor(prop.key)) {
this.raise(Errors.ConstructorClassField, prop.key);
}
classBody.body.push(this.parseClassProperty(prop));
}
pushClassPrivateProperty(classBody, prop) {
const node = this.parseClassPrivateProperty(prop);
classBody.body.push(node);
this.classScope.declarePrivateName(this.getPrivateNameSV(node.key), 0, node.key.loc.start);
}
pushClassAccessorProperty(classBody, prop, isPrivate) {
if (!isPrivate && !prop.computed && this.nameIsConstructor(prop.key)) {
this.raise(Errors.ConstructorClassField, prop.key);
}
const node = this.parseClassAccessorProperty(prop);
classBody.body.push(node);
if (isPrivate) {
this.classScope.declarePrivateName(this.getPrivateNameSV(node.key), 0, node.key.loc.start);
}
}
pushClassMethod(classBody, method, isGenerator, isAsync, isConstructor, allowsDirectSuper) {
classBody.body.push(this.parseMethod(method, isGenerator, isAsync, isConstructor, allowsDirectSuper, "ClassMethod", true));
}
pushClassPrivateMethod(classBody, method, isGenerator, isAsync) {
const node = this.parseMethod(method, isGenerator, isAsync, false, false, "ClassPrivateMethod", true);
classBody.body.push(node);
const kind = node.kind === "get" ? node.static ? 6 : 2 : node.kind === "set" ? node.static ? 5 : 1 : 0;
this.declareClassPrivateMethodInScope(node, kind);
}
declareClassPrivateMethodInScope(node, kind) {
this.classScope.declarePrivateName(this.getPrivateNameSV(node.key), kind, node.key.loc.start);
}
parsePostMemberNameModifiers(methodOrProp) {}
parseClassPrivateProperty(node) {
this.parseInitializer(node);
this.semicolon();
return this.finishNode(node, "ClassPrivateProperty");
}
parseClassProperty(node) {
this.parseInitializer(node);
this.semicolon();
return this.finishNode(node, "ClassProperty");
}
parseClassAccessorProperty(node) {
this.parseInitializer(node);
this.semicolon();
return this.finishNode(node, "ClassAccessorProperty");
}
parseInitializer(node) {
this.scope.enter(64 | 16);
this.expressionScope.enter(newExpressionScope());
this.prodParam.enter(0);
node.value = this.eat(29) ? this.parseMaybeAssignAllowIn() : null;
this.expressionScope.exit();
this.prodParam.exit();
this.scope.exit();
}
parseClassId(node, isStatement, optionalId, bindingType = 8331) {
if (tokenIsIdentifier(this.state.type)) {
node.id = this.parseIdentifier();
if (isStatement) {
this.declareNameFromIdentifier(node.id, bindingType);
}
} else {
if (optionalId || !isStatement) {
node.id = null;
} else {
throw this.raise(Errors.MissingClassName, this.state.startLoc);
}
}
}
parseClassSuper(node) {
node.superClass = this.eat(81) ? this.parseExprSubscripts() : null;
}
parseExport(node, decorators) {
const maybeDefaultIdentifier = this.parseMaybeImportPhase(node, true);
const hasDefault = this.maybeParseExportDefaultSpecifier(node, maybeDefaultIdentifier);
const parseAfterDefault = !hasDefault || this.eat(12);
const hasStar = parseAfterDefault && this.eatExportStar(node);
const hasNamespace = hasStar && this.maybeParseExportNamespaceSpecifier(node);
const parseAfterNamespace = parseAfterDefault && (!hasNamespace || this.eat(12));
const isFromRequired = hasDefault || hasStar;
if (hasStar && !hasNamespace) {
if (hasDefault) this.unexpected();
if (decorators) {
throw this.raise(Errors.UnsupportedDecoratorExport, node);
}
this.parseExportFrom(node, true);
this.sawUnambiguousESM = true;
return this.finishNode(node, "ExportAllDeclaration");
}
const hasSpecifiers = this.maybeParseExportNamedSpecifiers(node);
if (hasDefault && parseAfterDefault && !hasStar && !hasSpecifiers) {
this.unexpected(null, 5);
}
if (hasNamespace && parseAfterNamespace) {
this.unexpected(null, 98);
}
let hasDeclaration;
if (isFromRequired || hasSpecifiers) {
hasDeclaration = false;
if (decorators) {
throw this.raise(Errors.UnsupportedDecoratorExport, node);
}
this.parseExportFrom(node, isFromRequired);
} else {
hasDeclaration = this.maybeParseExportDeclaration(node);
}
if (isFromRequired || hasSpecifiers || hasDeclaration) {
var _node2$declaration;
const node2 = node;
this.checkExport(node2, true, false, !!node2.source);
if (((_node2$declaration = node2.declaration) == null ? void 0 : _node2$declaration.type) === "ClassDeclaration") {
this.maybeTakeDecorators(decorators, node2.declaration, node2);
} else if (decorators) {
throw this.raise(Errors.UnsupportedDecoratorExport, node);
}
this.sawUnambiguousESM = true;
return this.finishNode(node2, "ExportNamedDeclaration");
}
if (this.eat(65)) {
const node2 = node;
const decl = this.parseExportDefaultExpression();
node2.declaration = decl;
if (decl.type === "ClassDeclaration") {
this.maybeTakeDecorators(decorators, decl, node2);
} else if (decorators) {
throw this.raise(Errors.UnsupportedDecoratorExport, node);
}
this.checkExport(node2, true, true);
this.sawUnambiguousESM = true;
return this.finishNode(node2, "ExportDefaultDeclaration");
}
this.unexpected(null, 5);
}
eatExportStar(node) {
return this.eat(55);
}
maybeParseExportDefaultSpecifier(node, maybeDefaultIdentifier) {
if (maybeDefaultIdentifier || this.isExportDefaultSpecifier()) {
this.expectPlugin("exportDefaultFrom", maybeDefaultIdentifier == null ? void 0 : maybeDefaultIdentifier.loc.start);
const id = maybeDefaultIdentifier || this.parseIdentifier(true);
const specifier = this.startNodeAtNode(id);
specifier.exported = id;
node.specifiers = [this.finishNode(specifier, "ExportDefaultSpecifier")];
return true;
}
return false;
}
maybeParseExportNamespaceSpecifier(node) {
if (this.isContextual(93)) {
var _ref, _ref$specifiers;
(_ref$specifiers = (_ref = node).specifiers) != null ? _ref$specifiers : _ref.specifiers = [];
const specifier = this.startNodeAt(this.state.lastTokStartLoc);
this.next();
specifier.exported = this.parseModuleExportName();
node.specifiers.push(this.finishNode(specifier, "ExportNamespaceSpecifier"));
return true;
}
return false;
}
maybeParseExportNamedSpecifiers(node) {
if (this.match(5)) {
const node2 = node;
if (!node2.specifiers) node2.specifiers = [];
const isTypeExport = node2.exportKind === "type";
node2.specifiers.push(...this.parseExportSpecifiers(isTypeExport));
node2.source = null;
if (this.hasPlugin("importAssertions")) {
node2.assertions = [];
} else {
node2.attributes = [];
}
node2.declaration = null;
return true;
}
return false;
}
maybeParseExportDeclaration(node) {
if (this.shouldParseExportDeclaration()) {
node.specifiers = [];
node.source = null;
if (this.hasPlugin("importAssertions")) {
node.assertions = [];
} else {
node.attributes = [];
}
node.declaration = this.parseExportDeclaration(node);
return true;
}
return false;
}
isAsyncFunction() {
if (!this.isContextual(95)) return false;
const next = this.nextTokenInLineStart();
return this.isUnparsedContextual(next, "function");
}
parseExportDefaultExpression() {
const expr = this.startNode();
if (this.match(68)) {
this.next();
return this.parseFunction(expr, 1 | 4);
} else if (this.isAsyncFunction()) {
this.next();
this.next();
return this.parseFunction(expr, 1 | 4 | 8);
}
if (this.match(80)) {
return this.parseClass(expr, true, true);
}
if (this.match(26)) {
if (this.hasPlugin("decorators") && this.getPluginOption("decorators", "decoratorsBeforeExport") === true) {
this.raise(Errors.DecoratorBeforeExport, this.state.startLoc);
}
return this.parseClass(this.maybeTakeDecorators(this.parseDecorators(false), this.startNode()), true, true);
}
if (this.match(75) || this.match(74) || this.isLet()) {
throw this.raise(Errors.UnsupportedDefaultExport, this.state.startLoc);
}
const res = this.parseMaybeAssignAllowIn();
this.semicolon();
return res;
}
parseExportDeclaration(node) {
if (this.match(80)) {
const node = this.parseClass(this.startNode(), true, false);
return node;
}
return this.parseStatementListItem();
}
isExportDefaultSpecifier() {
const {
type
} = this.state;
if (tokenIsIdentifier(type)) {
if (type === 95 && !this.state.containsEsc || type === 100) {
return false;
}
if ((type === 130 || type === 129) && !this.state.containsEsc) {
const {
type: nextType
} = this.lookahead();
if (tokenIsIdentifier(nextType) && nextType !== 98 || nextType === 5) {
this.expectOnePlugin(["flow", "typescript"]);
return false;
}
}
} else if (!this.match(65)) {
return false;
}
const next = this.nextTokenStart();
const hasFrom = this.isUnparsedContextual(next, "from");
if (this.input.charCodeAt(next) === 44 || tokenIsIdentifier(this.state.type) && hasFrom) {
return true;
}
if (this.match(65) && hasFrom) {
const nextAfterFrom = this.input.charCodeAt(this.nextTokenStartSince(next + 4));
return nextAfterFrom === 34 || nextAfterFrom === 39;
}
return false;
}
parseExportFrom(node, expect) {
if (this.eatContextual(98)) {
node.source = this.parseImportSource();
this.checkExport(node);
this.maybeParseImportAttributes(node);
this.checkJSONModuleImport(node);
} else if (expect) {
this.unexpected();
}
this.semicolon();
}
shouldParseExportDeclaration() {
const {
type
} = this.state;
if (type === 26) {
this.expectOnePlugin(["decorators", "decorators-legacy"]);
if (this.hasPlugin("decorators")) {
if (this.getPluginOption("decorators", "decoratorsBeforeExport") === true) {
this.raise(Errors.DecoratorBeforeExport, this.state.startLoc);
}
return true;
}
}
if (this.isContextual(107)) {
this.raise(Errors.UsingDeclarationExport, this.state.startLoc);
return true;
}
if (this.isContextual(96) && this.startsAwaitUsing()) {
this.raise(Errors.UsingDeclarationExport, this.state.startLoc);
return true;
}
return type === 74 || type === 75 || type === 68 || type === 80 || this.isLet() || this.isAsyncFunction();
}
checkExport(node, checkNames, isDefault, isFrom) {
if (checkNames) {
var _node$specifiers;
if (isDefault) {
this.checkDuplicateExports(node, "default");
if (this.hasPlugin("exportDefaultFrom")) {
var _declaration$extra;
const declaration = node.declaration;
if (declaration.type === "Identifier" && declaration.name === "from" && declaration.end - declaration.start === 4 && !((_declaration$extra = declaration.extra) != null && _declaration$extra.parenthesized)) {
this.raise(Errors.ExportDefaultFromAsIdentifier, declaration);
}
}
} else if ((_node$specifiers = node.specifiers) != null && _node$specifiers.length) {
for (const specifier of node.specifiers) {
const {
exported
} = specifier;
const exportName = exported.type === "Identifier" ? exported.name : exported.value;
this.checkDuplicateExports(specifier, exportName);
if (!isFrom && specifier.local) {
const {
local
} = specifier;
if (local.type !== "Identifier") {
this.raise(Errors.ExportBindingIsString, specifier, {
localName: local.value,
exportName
});
} else {
this.checkReservedWord(local.name, local.loc.start, true, false);
this.scope.checkLocalExport(local);
}
}
}
} else if (node.declaration) {
const decl = node.declaration;
if (decl.type === "FunctionDeclaration" || decl.type === "ClassDeclaration") {
const {
id
} = decl;
if (!id) throw new Error("Assertion failure");
this.checkDuplicateExports(node, id.name);
} else if (decl.type === "VariableDeclaration") {
for (const declaration of decl.declarations) {
this.checkDeclaration(declaration.id);
}
}
}
}
}
checkDeclaration(node) {
if (node.type === "Identifier") {
this.checkDuplicateExports(node, node.name);
} else if (node.type === "ObjectPattern") {
for (const prop of node.properties) {
this.checkDeclaration(prop);
}
} else if (node.type === "ArrayPattern") {
for (const elem of node.elements) {
if (elem) {
this.checkDeclaration(elem);
}
}
} else if (node.type === "ObjectProperty") {
this.checkDeclaration(node.value);
} else if (node.type === "RestElement") {
this.checkDeclaration(node.argument);
} else if (node.type === "AssignmentPattern") {
this.checkDeclaration(node.left);
}
}
checkDuplicateExports(node, exportName) {
if (this.exportedIdentifiers.has(exportName)) {
if (exportName === "default") {
this.raise(Errors.DuplicateDefaultExport, node);
} else {
this.raise(Errors.DuplicateExport, node, {
exportName
});
}
}
this.exportedIdentifiers.add(exportName);
}
parseExportSpecifiers(isInTypeExport) {
const nodes = [];
let first = true;
this.expect(5);
while (!this.eat(8)) {
if (first) {
first = false;
} else {
this.expect(12);
if (this.eat(8)) break;
}
const isMaybeTypeOnly = this.isContextual(130);
const isString = this.match(134);
const node = this.startNode();
node.local = this.parseModuleExportName();
nodes.push(this.parseExportSpecifier(node, isString, isInTypeExport, isMaybeTypeOnly));
}
return nodes;
}
parseExportSpecifier(node, isString, isInTypeExport, isMaybeTypeOnly) {
if (this.eatContextual(93)) {
node.exported = this.parseModuleExportName();
} else if (isString) {
node.exported = cloneStringLiteral(node.local);
} else if (!node.exported) {
node.exported = cloneIdentifier(node.local);
}
return this.finishNode(node, "ExportSpecifier");
}
parseModuleExportName() {
if (this.match(134)) {
const result = this.parseStringLiteral(this.state.value);
const surrogate = loneSurrogate.exec(result.value);
if (surrogate) {
this.raise(Errors.ModuleExportNameHasLoneSurrogate, result, {
surrogateCharCode: surrogate[0].charCodeAt(0)
});
}
return result;
}
return this.parseIdentifier(true);
}
isJSONModuleImport(node) {
if (node.assertions != null) {
return node.assertions.some(({
key,
value
}) => {
return value.value === "json" && (key.type === "Identifier" ? key.name === "type" : key.value === "type");
});
}
return false;
}
checkImportReflection(node) {
const {
specifiers
} = node;
const singleBindingType = specifiers.length === 1 ? specifiers[0].type : null;
if (node.phase === "source") {
if (singleBindingType !== "ImportDefaultSpecifier") {
this.raise(Errors.SourcePhaseImportRequiresDefault, specifiers[0].loc.start);
}
} else if (node.phase === "defer") {
if (singleBindingType !== "ImportNamespaceSpecifier") {
this.raise(Errors.DeferImportRequiresNamespace, specifiers[0].loc.start);
}
} else if (node.module) {
var _node$assertions;
if (singleBindingType !== "ImportDefaultSpecifier") {
this.raise(Errors.ImportReflectionNotBinding, specifiers[0].loc.start);
}
if (((_node$assertions = node.assertions) == null ? void 0 : _node$assertions.length) > 0) {
this.raise(Errors.ImportReflectionHasAssertion, specifiers[0].loc.start);
}
}
}
checkJSONModuleImport(node) {
if (this.isJSONModuleImport(node) && node.type !== "ExportAllDeclaration") {
const {
specifiers
} = node;
if (specifiers != null) {
const nonDefaultNamedSpecifier = specifiers.find(specifier => {
let imported;
if (specifier.type === "ExportSpecifier") {
imported = specifier.local;
} else if (specifier.type === "ImportSpecifier") {
imported = specifier.imported;
}
if (imported !== undefined) {
return imported.type === "Identifier" ? imported.name !== "default" : imported.value !== "default";
}
});
if (nonDefaultNamedSpecifier !== undefined) {
this.raise(Errors.ImportJSONBindingNotDefault, nonDefaultNamedSpecifier.loc.start);
}
}
}
}
isPotentialImportPhase(isExport) {
if (isExport) return false;
return this.isContextual(105) || this.isContextual(97) || this.isContextual(127);
}
applyImportPhase(node, isExport, phase, loc) {
if (isExport) {
return;
}
if (phase === "module") {
this.expectPlugin("importReflection", loc);
node.module = true;
} else if (this.hasPlugin("importReflection")) {
node.module = false;
}
if (phase === "source") {
this.expectPlugin("sourcePhaseImports", loc);
node.phase = "source";
} else if (phase === "defer") {
this.expectPlugin("deferredImportEvaluation", loc);
node.phase = "defer";
} else if (this.hasPlugin("sourcePhaseImports")) {
node.phase = null;
}
}
parseMaybeImportPhase(node, isExport) {
if (!this.isPotentialImportPhase(isExport)) {
this.applyImportPhase(node, isExport, null);
return null;
}
const phaseIdentifier = this.parseIdentifier(true);
const {
type
} = this.state;
const isImportPhase = tokenIsKeywordOrIdentifier(type) ? type !== 98 || this.lookaheadCharCode() === 102 : type !== 12;
if (isImportPhase) {
this.resetPreviousIdentifierLeadingComments(phaseIdentifier);
this.applyImportPhase(node, isExport, phaseIdentifier.name, phaseIdentifier.loc.start);
return null;
} else {
this.applyImportPhase(node, isExport, null);
return phaseIdentifier;
}
}
isPrecedingIdImportPhase(phase) {
const {
type
} = this.state;
return tokenIsIdentifier(type) ? type !== 98 || this.lookaheadCharCode() === 102 : type !== 12;
}
parseImport(node) {
if (this.match(134)) {
return this.parseImportSourceAndAttributes(node);
}
return this.parseImportSpecifiersAndAfter(node, this.parseMaybeImportPhase(node, false));
}
parseImportSpecifiersAndAfter(node, maybeDefaultIdentifier) {
node.specifiers = [];
const hasDefault = this.maybeParseDefaultImportSpecifier(node, maybeDefaultIdentifier);
const parseNext = !hasDefault || this.eat(12);
const hasStar = parseNext && this.maybeParseStarImportSpecifier(node);
if (parseNext && !hasStar) this.parseNamedImportSpecifiers(node);
this.expectContextual(98);
return this.parseImportSourceAndAttributes(node);
}
parseImportSourceAndAttributes(node) {
var _node$specifiers2;
(_node$specifiers2 = node.specifiers) != null ? _node$specifiers2 : node.specifiers = [];
node.source = this.parseImportSource();
this.maybeParseImportAttributes(node);
this.checkImportReflection(node);
this.checkJSONModuleImport(node);
this.semicolon();
this.sawUnambiguousESM = true;
return this.finishNode(node, "ImportDeclaration");
}
parseImportSource() {
if (!this.match(134)) this.unexpected();
return this.parseExprAtom();
}
parseImportSpecifierLocal(node, specifier, type) {
specifier.local = this.parseIdentifier();
node.specifiers.push(this.finishImportSpecifier(specifier, type));
}
finishImportSpecifier(specifier, type, bindingType = 8201) {
this.checkLVal(specifier.local, {
type
}, bindingType);
return this.finishNode(specifier, type);
}
parseImportAttributes() {
this.expect(5);
const attrs = [];
const attrNames = new Set();
do {
if (this.match(8)) {
break;
}
const node = this.startNode();
const keyName = this.state.value;
if (attrNames.has(keyName)) {
this.raise(Errors.ModuleAttributesWithDuplicateKeys, this.state.startLoc, {
key: keyName
});
}
attrNames.add(keyName);
if (this.match(134)) {
node.key = this.parseStringLiteral(keyName);
} else {
node.key = this.parseIdentifier(true);
}
this.expect(14);
if (!this.match(134)) {
throw this.raise(Errors.ModuleAttributeInvalidValue, this.state.startLoc);
}
node.value = this.parseStringLiteral(this.state.value);
attrs.push(this.finishNode(node, "ImportAttribute"));
} while (this.eat(12));
this.expect(8);
return attrs;
}
parseModuleAttributes() {
const attrs = [];
const attributes = new Set();
do {
const node = this.startNode();
node.key = this.parseIdentifier(true);
if (node.key.name !== "type") {
this.raise(Errors.ModuleAttributeDifferentFromType, node.key);
}
if (attributes.has(node.key.name)) {
this.raise(Errors.ModuleAttributesWithDuplicateKeys, node.key, {
key: node.key.name
});
}
attributes.add(node.key.name);
this.expect(14);
if (!this.match(134)) {
throw this.raise(Errors.ModuleAttributeInvalidValue, this.state.startLoc);
}
node.value = this.parseStringLiteral(this.state.value);
attrs.push(this.finishNode(node, "ImportAttribute"));
} while (this.eat(12));
return attrs;
}
maybeParseImportAttributes(node) {
let attributes;
{
var useWith = false;
}
if (this.match(76)) {
if (this.hasPrecedingLineBreak() && this.lookaheadCharCode() === 40) {
return;
}
this.next();
if (this.hasPlugin("moduleAttributes")) {
attributes = this.parseModuleAttributes();
this.addExtra(node, "deprecatedWithLegacySyntax", true);
} else {
attributes = this.parseImportAttributes();
}
{
useWith = true;
}
} else if (this.isContextual(94) && !this.hasPrecedingLineBreak()) {
if (!this.hasPlugin("deprecatedImportAssert") && !this.hasPlugin("importAssertions")) {
this.raise(Errors.ImportAttributesUseAssert, this.state.startLoc);
}
if (!this.hasPlugin("importAssertions")) {
this.addExtra(node, "deprecatedAssertSyntax", true);
}
this.next();
attributes = this.parseImportAttributes();
} else {
attributes = [];
}
if (!useWith && this.hasPlugin("importAssertions")) {
node.assertions = attributes;
} else {
node.attributes = attributes;
}
}
maybeParseDefaultImportSpecifier(node, maybeDefaultIdentifier) {
if (maybeDefaultIdentifier) {
const specifier = this.startNodeAtNode(maybeDefaultIdentifier);
specifier.local = maybeDefaultIdentifier;
node.specifiers.push(this.finishImportSpecifier(specifier, "ImportDefaultSpecifier"));
return true;
} else if (tokenIsKeywordOrIdentifier(this.state.type)) {
this.parseImportSpecifierLocal(node, this.startNode(), "ImportDefaultSpecifier");
return true;
}
return false;
}
maybeParseStarImportSpecifier(node) {
if (this.match(55)) {
const specifier = this.startNode();
this.next();
this.expectContextual(93);
this.parseImportSpecifierLocal(node, specifier, "ImportNamespaceSpecifier");
return true;
}
return false;
}
parseNamedImportSpecifiers(node) {
let first = true;
this.expect(5);
while (!this.eat(8)) {
if (first) {
first = false;
} else {
if (this.eat(14)) {
throw this.raise(Errors.DestructureNamedImport, this.state.startLoc);
}
this.expect(12);
if (this.eat(8)) break;
}
const specifier = this.startNode();
const importedIsString = this.match(134);
const isMaybeTypeOnly = this.isContextual(130);
specifier.imported = this.parseModuleExportName();
const importSpecifier = this.parseImportSpecifier(specifier, importedIsString, node.importKind === "type" || node.importKind === "typeof", isMaybeTypeOnly, undefined);
node.specifiers.push(importSpecifier);
}
}
parseImportSpecifier(specifier, importedIsString, isInTypeOnlyImport, isMaybeTypeOnly, bindingType) {
if (this.eatContextual(93)) {
specifier.local = this.parseIdentifier();
} else {
const {
imported
} = specifier;
if (importedIsString) {
throw this.raise(Errors.ImportBindingIsString, specifier, {
importName: imported.value
});
}
this.checkReservedWord(imported.name, specifier.loc.start, true, true);
if (!specifier.local) {
specifier.local = cloneIdentifier(imported);
}
}
return this.finishImportSpecifier(specifier, "ImportSpecifier", bindingType);
}
isThisParam(param) {
return param.type === "Identifier" && param.name === "this";
}
}
class Parser extends StatementParser {
constructor(options, input, pluginsMap) {
options = getOptions(options);
super(options, input);
this.options = options;
this.initializeScopes();
this.plugins = pluginsMap;
this.filename = options.sourceFilename;
this.startIndex = options.startIndex;
let optionFlags = 0;
if (options.allowAwaitOutsideFunction) {
optionFlags |= 1;
}
if (options.allowReturnOutsideFunction) {
optionFlags |= 2;
}
if (options.allowImportExportEverywhere) {
optionFlags |= 8;
}
if (options.allowSuperOutsideMethod) {
optionFlags |= 16;
}
if (options.allowUndeclaredExports) {
optionFlags |= 64;
}
if (options.allowNewTargetOutsideFunction) {
optionFlags |= 4;
}
if (options.allowYieldOutsideFunction) {
optionFlags |= 32;
}
if (options.ranges) {
optionFlags |= 128;
}
if (options.tokens) {
optionFlags |= 256;
}
if (options.createImportExpressions) {
optionFlags |= 512;
}
if (options.createParenthesizedExpressions) {
optionFlags |= 1024;
}
if (options.errorRecovery) {
optionFlags |= 2048;
}
if (options.attachComment) {
optionFlags |= 4096;
}
if (options.annexB) {
optionFlags |= 8192;
}
this.optionFlags = optionFlags;
}
getScopeHandler() {
return ScopeHandler;
}
parse() {
this.enterInitialScopes();
const file = this.startNode();
const program = this.startNode();
this.nextToken();
file.errors = null;
this.parseTopLevel(file, program);
file.errors = this.state.errors;
file.comments.length = this.state.commentsLen;
return file;
}
}
function parse(input, options) {
var _options;
if (((_options = options) == null ? void 0 : _options.sourceType) === "unambiguous") {
options = Object.assign({}, options);
try {
options.sourceType = "module";
const parser = getParser(options, input);
const ast = parser.parse();
if (parser.sawUnambiguousESM) {
return ast;
}
if (parser.ambiguousScriptDifferentAst) {
try {
options.sourceType = "script";
return getParser(options, input).parse();
} catch (_unused) {}
} else {
ast.program.sourceType = "script";
}
return ast;
} catch (moduleError) {
try {
options.sourceType = "script";
return getParser(options, input).parse();
} catch (_unused2) {}
throw moduleError;
}
} else {
return getParser(options, input).parse();
}
}
function parseExpression(input, options) {
const parser = getParser(options, input);
if (parser.options.strictMode) {
parser.state.strict = true;
}
return parser.getExpression();
}
function generateExportedTokenTypes(internalTokenTypes) {
const tokenTypes = {};
for (const typeName of Object.keys(internalTokenTypes)) {
tokenTypes[typeName] = getExportedToken(internalTokenTypes[typeName]);
}
return tokenTypes;
}
const tokTypes = generateExportedTokenTypes(tt);
function getParser(options, input) {
let cls = Parser;
const pluginsMap = new Map();
if (options != null && options.plugins) {
for (const plugin of options.plugins) {
let name, opts;
if (typeof plugin === "string") {
name = plugin;
} else {
[name, opts] = plugin;
}
if (!pluginsMap.has(name)) {
pluginsMap.set(name, opts || {});
}
}
validatePlugins(pluginsMap);
cls = getParserClass(pluginsMap);
}
return new cls(options, input, pluginsMap);
}
const parserClassCache = new Map();
function getParserClass(pluginsMap) {
const pluginList = [];
for (const name of mixinPluginNames) {
if (pluginsMap.has(name)) {
pluginList.push(name);
}
}
const key = pluginList.join("|");
let cls = parserClassCache.get(key);
if (!cls) {
cls = Parser;
for (const plugin of pluginList) {
cls = mixinPlugins[plugin](cls);
}
parserClassCache.set(key, cls);
}
return cls;
}
exports.parse = parse;
exports.parseExpression = parseExpression;
exports.tokTypes = tokTypes;
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