diff options
Diffstat (limited to 'node_modules/sucrase/dist/parser/plugins')
| -rw-r--r-- | node_modules/sucrase/dist/parser/plugins/flow.js | 1105 | ||||
| -rw-r--r-- | node_modules/sucrase/dist/parser/plugins/jsx/index.js | 367 | ||||
| -rw-r--r-- | node_modules/sucrase/dist/parser/plugins/jsx/xhtml.js | 256 | ||||
| -rw-r--r-- | node_modules/sucrase/dist/parser/plugins/types.js | 37 | ||||
| -rw-r--r-- | node_modules/sucrase/dist/parser/plugins/typescript.js | 1632 |
5 files changed, 3397 insertions, 0 deletions
diff --git a/node_modules/sucrase/dist/parser/plugins/flow.js b/node_modules/sucrase/dist/parser/plugins/flow.js new file mode 100644 index 0000000..9401895 --- /dev/null +++ b/node_modules/sucrase/dist/parser/plugins/flow.js @@ -0,0 +1,1105 @@ +"use strict";Object.defineProperty(exports, "__esModule", {value: true});/* eslint max-len: 0 */ + + + + + + + + + + +var _index = require('../tokenizer/index'); +var _keywords = require('../tokenizer/keywords'); +var _types = require('../tokenizer/types'); +var _base = require('../traverser/base'); + + + + + + + + + + + + + +var _expression = require('../traverser/expression'); + + + + + + + + +var _statement = require('../traverser/statement'); + + + + + + + + + +var _util = require('../traverser/util'); + +function isMaybeDefaultImport(lookahead) { + return ( + (lookahead.type === _types.TokenType.name || !!(lookahead.type & _types.TokenType.IS_KEYWORD)) && + lookahead.contextualKeyword !== _keywords.ContextualKeyword._from + ); +} + +function flowParseTypeInitialiser(tok) { + const oldIsType = _index.pushTypeContext.call(void 0, 0); + _util.expect.call(void 0, tok || _types.TokenType.colon); + flowParseType(); + _index.popTypeContext.call(void 0, oldIsType); +} + +function flowParsePredicate() { + _util.expect.call(void 0, _types.TokenType.modulo); + _util.expectContextual.call(void 0, _keywords.ContextualKeyword._checks); + if (_index.eat.call(void 0, _types.TokenType.parenL)) { + _expression.parseExpression.call(void 0, ); + _util.expect.call(void 0, _types.TokenType.parenR); + } +} + +function flowParseTypeAndPredicateInitialiser() { + const oldIsType = _index.pushTypeContext.call(void 0, 0); + _util.expect.call(void 0, _types.TokenType.colon); + if (_index.match.call(void 0, _types.TokenType.modulo)) { + flowParsePredicate(); + } else { + flowParseType(); + if (_index.match.call(void 0, _types.TokenType.modulo)) { + flowParsePredicate(); + } + } + _index.popTypeContext.call(void 0, oldIsType); +} + +function flowParseDeclareClass() { + _index.next.call(void 0, ); + flowParseInterfaceish(/* isClass */ true); +} + +function flowParseDeclareFunction() { + _index.next.call(void 0, ); + _expression.parseIdentifier.call(void 0, ); + + if (_index.match.call(void 0, _types.TokenType.lessThan)) { + flowParseTypeParameterDeclaration(); + } + + _util.expect.call(void 0, _types.TokenType.parenL); + flowParseFunctionTypeParams(); + _util.expect.call(void 0, _types.TokenType.parenR); + + flowParseTypeAndPredicateInitialiser(); + + _util.semicolon.call(void 0, ); +} + +function flowParseDeclare() { + if (_index.match.call(void 0, _types.TokenType._class)) { + flowParseDeclareClass(); + } else if (_index.match.call(void 0, _types.TokenType._function)) { + flowParseDeclareFunction(); + } else if (_index.match.call(void 0, _types.TokenType._var)) { + flowParseDeclareVariable(); + } else if (_util.eatContextual.call(void 0, _keywords.ContextualKeyword._module)) { + if (_index.eat.call(void 0, _types.TokenType.dot)) { + flowParseDeclareModuleExports(); + } else { + flowParseDeclareModule(); + } + } else if (_util.isContextual.call(void 0, _keywords.ContextualKeyword._type)) { + flowParseDeclareTypeAlias(); + } else if (_util.isContextual.call(void 0, _keywords.ContextualKeyword._opaque)) { + flowParseDeclareOpaqueType(); + } else if (_util.isContextual.call(void 0, _keywords.ContextualKeyword._interface)) { + flowParseDeclareInterface(); + } else if (_index.match.call(void 0, _types.TokenType._export)) { + flowParseDeclareExportDeclaration(); + } else { + _util.unexpected.call(void 0, ); + } +} + +function flowParseDeclareVariable() { + _index.next.call(void 0, ); + flowParseTypeAnnotatableIdentifier(); + _util.semicolon.call(void 0, ); +} + +function flowParseDeclareModule() { + if (_index.match.call(void 0, _types.TokenType.string)) { + _expression.parseExprAtom.call(void 0, ); + } else { + _expression.parseIdentifier.call(void 0, ); + } + + _util.expect.call(void 0, _types.TokenType.braceL); + while (!_index.match.call(void 0, _types.TokenType.braceR) && !_base.state.error) { + if (_index.match.call(void 0, _types.TokenType._import)) { + _index.next.call(void 0, ); + _statement.parseImport.call(void 0, ); + } else { + _util.unexpected.call(void 0, ); + } + } + _util.expect.call(void 0, _types.TokenType.braceR); +} + +function flowParseDeclareExportDeclaration() { + _util.expect.call(void 0, _types.TokenType._export); + + if (_index.eat.call(void 0, _types.TokenType._default)) { + if (_index.match.call(void 0, _types.TokenType._function) || _index.match.call(void 0, _types.TokenType._class)) { + // declare export default class ... + // declare export default function ... + flowParseDeclare(); + } else { + // declare export default [type]; + flowParseType(); + _util.semicolon.call(void 0, ); + } + } else if ( + _index.match.call(void 0, _types.TokenType._var) || // declare export var ... + _index.match.call(void 0, _types.TokenType._function) || // declare export function ... + _index.match.call(void 0, _types.TokenType._class) || // declare export class ... + _util.isContextual.call(void 0, _keywords.ContextualKeyword._opaque) // declare export opaque .. + ) { + flowParseDeclare(); + } else if ( + _index.match.call(void 0, _types.TokenType.star) || // declare export * from '' + _index.match.call(void 0, _types.TokenType.braceL) || // declare export {} ... + _util.isContextual.call(void 0, _keywords.ContextualKeyword._interface) || // declare export interface ... + _util.isContextual.call(void 0, _keywords.ContextualKeyword._type) || // declare export type ... + _util.isContextual.call(void 0, _keywords.ContextualKeyword._opaque) // declare export opaque type ... + ) { + _statement.parseExport.call(void 0, ); + } else { + _util.unexpected.call(void 0, ); + } +} + +function flowParseDeclareModuleExports() { + _util.expectContextual.call(void 0, _keywords.ContextualKeyword._exports); + flowParseTypeAnnotation(); + _util.semicolon.call(void 0, ); +} + +function flowParseDeclareTypeAlias() { + _index.next.call(void 0, ); + flowParseTypeAlias(); +} + +function flowParseDeclareOpaqueType() { + _index.next.call(void 0, ); + flowParseOpaqueType(true); +} + +function flowParseDeclareInterface() { + _index.next.call(void 0, ); + flowParseInterfaceish(); +} + +// Interfaces + +function flowParseInterfaceish(isClass = false) { + flowParseRestrictedIdentifier(); + + if (_index.match.call(void 0, _types.TokenType.lessThan)) { + flowParseTypeParameterDeclaration(); + } + + if (_index.eat.call(void 0, _types.TokenType._extends)) { + do { + flowParseInterfaceExtends(); + } while (!isClass && _index.eat.call(void 0, _types.TokenType.comma)); + } + + if (_util.isContextual.call(void 0, _keywords.ContextualKeyword._mixins)) { + _index.next.call(void 0, ); + do { + flowParseInterfaceExtends(); + } while (_index.eat.call(void 0, _types.TokenType.comma)); + } + + if (_util.isContextual.call(void 0, _keywords.ContextualKeyword._implements)) { + _index.next.call(void 0, ); + do { + flowParseInterfaceExtends(); + } while (_index.eat.call(void 0, _types.TokenType.comma)); + } + + flowParseObjectType(isClass, false, isClass); +} + +function flowParseInterfaceExtends() { + flowParseQualifiedTypeIdentifier(false); + if (_index.match.call(void 0, _types.TokenType.lessThan)) { + flowParseTypeParameterInstantiation(); + } +} + +function flowParseInterface() { + flowParseInterfaceish(); +} + +function flowParseRestrictedIdentifier() { + _expression.parseIdentifier.call(void 0, ); +} + +function flowParseTypeAlias() { + flowParseRestrictedIdentifier(); + + if (_index.match.call(void 0, _types.TokenType.lessThan)) { + flowParseTypeParameterDeclaration(); + } + + flowParseTypeInitialiser(_types.TokenType.eq); + _util.semicolon.call(void 0, ); +} + +function flowParseOpaqueType(declare) { + _util.expectContextual.call(void 0, _keywords.ContextualKeyword._type); + flowParseRestrictedIdentifier(); + + if (_index.match.call(void 0, _types.TokenType.lessThan)) { + flowParseTypeParameterDeclaration(); + } + + // Parse the supertype + if (_index.match.call(void 0, _types.TokenType.colon)) { + flowParseTypeInitialiser(_types.TokenType.colon); + } + + if (!declare) { + flowParseTypeInitialiser(_types.TokenType.eq); + } + _util.semicolon.call(void 0, ); +} + +function flowParseTypeParameter() { + flowParseVariance(); + flowParseTypeAnnotatableIdentifier(); + + if (_index.eat.call(void 0, _types.TokenType.eq)) { + flowParseType(); + } +} + + function flowParseTypeParameterDeclaration() { + const oldIsType = _index.pushTypeContext.call(void 0, 0); + // istanbul ignore else: this condition is already checked at all call sites + if (_index.match.call(void 0, _types.TokenType.lessThan) || _index.match.call(void 0, _types.TokenType.typeParameterStart)) { + _index.next.call(void 0, ); + } else { + _util.unexpected.call(void 0, ); + } + + do { + flowParseTypeParameter(); + if (!_index.match.call(void 0, _types.TokenType.greaterThan)) { + _util.expect.call(void 0, _types.TokenType.comma); + } + } while (!_index.match.call(void 0, _types.TokenType.greaterThan) && !_base.state.error); + _util.expect.call(void 0, _types.TokenType.greaterThan); + _index.popTypeContext.call(void 0, oldIsType); +} exports.flowParseTypeParameterDeclaration = flowParseTypeParameterDeclaration; + +function flowParseTypeParameterInstantiation() { + const oldIsType = _index.pushTypeContext.call(void 0, 0); + _util.expect.call(void 0, _types.TokenType.lessThan); + while (!_index.match.call(void 0, _types.TokenType.greaterThan) && !_base.state.error) { + flowParseType(); + if (!_index.match.call(void 0, _types.TokenType.greaterThan)) { + _util.expect.call(void 0, _types.TokenType.comma); + } + } + _util.expect.call(void 0, _types.TokenType.greaterThan); + _index.popTypeContext.call(void 0, oldIsType); +} + +function flowParseInterfaceType() { + _util.expectContextual.call(void 0, _keywords.ContextualKeyword._interface); + if (_index.eat.call(void 0, _types.TokenType._extends)) { + do { + flowParseInterfaceExtends(); + } while (_index.eat.call(void 0, _types.TokenType.comma)); + } + flowParseObjectType(false, false, false); +} + +function flowParseObjectPropertyKey() { + if (_index.match.call(void 0, _types.TokenType.num) || _index.match.call(void 0, _types.TokenType.string)) { + _expression.parseExprAtom.call(void 0, ); + } else { + _expression.parseIdentifier.call(void 0, ); + } +} + +function flowParseObjectTypeIndexer() { + // Note: bracketL has already been consumed + if (_index.lookaheadType.call(void 0, ) === _types.TokenType.colon) { + flowParseObjectPropertyKey(); + flowParseTypeInitialiser(); + } else { + flowParseType(); + } + _util.expect.call(void 0, _types.TokenType.bracketR); + flowParseTypeInitialiser(); +} + +function flowParseObjectTypeInternalSlot() { + // Note: both bracketL have already been consumed + flowParseObjectPropertyKey(); + _util.expect.call(void 0, _types.TokenType.bracketR); + _util.expect.call(void 0, _types.TokenType.bracketR); + if (_index.match.call(void 0, _types.TokenType.lessThan) || _index.match.call(void 0, _types.TokenType.parenL)) { + flowParseObjectTypeMethodish(); + } else { + _index.eat.call(void 0, _types.TokenType.question); + flowParseTypeInitialiser(); + } +} + +function flowParseObjectTypeMethodish() { + if (_index.match.call(void 0, _types.TokenType.lessThan)) { + flowParseTypeParameterDeclaration(); + } + + _util.expect.call(void 0, _types.TokenType.parenL); + while (!_index.match.call(void 0, _types.TokenType.parenR) && !_index.match.call(void 0, _types.TokenType.ellipsis) && !_base.state.error) { + flowParseFunctionTypeParam(); + if (!_index.match.call(void 0, _types.TokenType.parenR)) { + _util.expect.call(void 0, _types.TokenType.comma); + } + } + + if (_index.eat.call(void 0, _types.TokenType.ellipsis)) { + flowParseFunctionTypeParam(); + } + _util.expect.call(void 0, _types.TokenType.parenR); + flowParseTypeInitialiser(); +} + +function flowParseObjectTypeCallProperty() { + flowParseObjectTypeMethodish(); +} + +function flowParseObjectType(allowStatic, allowExact, allowProto) { + let endDelim; + if (allowExact && _index.match.call(void 0, _types.TokenType.braceBarL)) { + _util.expect.call(void 0, _types.TokenType.braceBarL); + endDelim = _types.TokenType.braceBarR; + } else { + _util.expect.call(void 0, _types.TokenType.braceL); + endDelim = _types.TokenType.braceR; + } + + while (!_index.match.call(void 0, endDelim) && !_base.state.error) { + if (allowProto && _util.isContextual.call(void 0, _keywords.ContextualKeyword._proto)) { + const lookahead = _index.lookaheadType.call(void 0, ); + if (lookahead !== _types.TokenType.colon && lookahead !== _types.TokenType.question) { + _index.next.call(void 0, ); + allowStatic = false; + } + } + if (allowStatic && _util.isContextual.call(void 0, _keywords.ContextualKeyword._static)) { + const lookahead = _index.lookaheadType.call(void 0, ); + if (lookahead !== _types.TokenType.colon && lookahead !== _types.TokenType.question) { + _index.next.call(void 0, ); + } + } + + flowParseVariance(); + + if (_index.eat.call(void 0, _types.TokenType.bracketL)) { + if (_index.eat.call(void 0, _types.TokenType.bracketL)) { + flowParseObjectTypeInternalSlot(); + } else { + flowParseObjectTypeIndexer(); + } + } else if (_index.match.call(void 0, _types.TokenType.parenL) || _index.match.call(void 0, _types.TokenType.lessThan)) { + flowParseObjectTypeCallProperty(); + } else { + if (_util.isContextual.call(void 0, _keywords.ContextualKeyword._get) || _util.isContextual.call(void 0, _keywords.ContextualKeyword._set)) { + const lookahead = _index.lookaheadType.call(void 0, ); + if (lookahead === _types.TokenType.name || lookahead === _types.TokenType.string || lookahead === _types.TokenType.num) { + _index.next.call(void 0, ); + } + } + + flowParseObjectTypeProperty(); + } + + flowObjectTypeSemicolon(); + } + + _util.expect.call(void 0, endDelim); +} + +function flowParseObjectTypeProperty() { + if (_index.match.call(void 0, _types.TokenType.ellipsis)) { + _util.expect.call(void 0, _types.TokenType.ellipsis); + if (!_index.eat.call(void 0, _types.TokenType.comma)) { + _index.eat.call(void 0, _types.TokenType.semi); + } + // Explicit inexact object syntax. + if (_index.match.call(void 0, _types.TokenType.braceR)) { + return; + } + flowParseType(); + } else { + flowParseObjectPropertyKey(); + if (_index.match.call(void 0, _types.TokenType.lessThan) || _index.match.call(void 0, _types.TokenType.parenL)) { + // This is a method property + flowParseObjectTypeMethodish(); + } else { + _index.eat.call(void 0, _types.TokenType.question); + flowParseTypeInitialiser(); + } + } +} + +function flowObjectTypeSemicolon() { + if (!_index.eat.call(void 0, _types.TokenType.semi) && !_index.eat.call(void 0, _types.TokenType.comma) && !_index.match.call(void 0, _types.TokenType.braceR) && !_index.match.call(void 0, _types.TokenType.braceBarR)) { + _util.unexpected.call(void 0, ); + } +} + +function flowParseQualifiedTypeIdentifier(initialIdAlreadyParsed) { + if (!initialIdAlreadyParsed) { + _expression.parseIdentifier.call(void 0, ); + } + while (_index.eat.call(void 0, _types.TokenType.dot)) { + _expression.parseIdentifier.call(void 0, ); + } +} + +function flowParseGenericType() { + flowParseQualifiedTypeIdentifier(true); + if (_index.match.call(void 0, _types.TokenType.lessThan)) { + flowParseTypeParameterInstantiation(); + } +} + +function flowParseTypeofType() { + _util.expect.call(void 0, _types.TokenType._typeof); + flowParsePrimaryType(); +} + +function flowParseTupleType() { + _util.expect.call(void 0, _types.TokenType.bracketL); + // We allow trailing commas + while (_base.state.pos < _base.input.length && !_index.match.call(void 0, _types.TokenType.bracketR)) { + flowParseType(); + if (_index.match.call(void 0, _types.TokenType.bracketR)) { + break; + } + _util.expect.call(void 0, _types.TokenType.comma); + } + _util.expect.call(void 0, _types.TokenType.bracketR); +} + +function flowParseFunctionTypeParam() { + const lookahead = _index.lookaheadType.call(void 0, ); + if (lookahead === _types.TokenType.colon || lookahead === _types.TokenType.question) { + _expression.parseIdentifier.call(void 0, ); + _index.eat.call(void 0, _types.TokenType.question); + flowParseTypeInitialiser(); + } else { + flowParseType(); + } +} + +function flowParseFunctionTypeParams() { + while (!_index.match.call(void 0, _types.TokenType.parenR) && !_index.match.call(void 0, _types.TokenType.ellipsis) && !_base.state.error) { + flowParseFunctionTypeParam(); + if (!_index.match.call(void 0, _types.TokenType.parenR)) { + _util.expect.call(void 0, _types.TokenType.comma); + } + } + if (_index.eat.call(void 0, _types.TokenType.ellipsis)) { + flowParseFunctionTypeParam(); + } +} + +// The parsing of types roughly parallels the parsing of expressions, and +// primary types are kind of like primary expressions...they're the +// primitives with which other types are constructed. +function flowParsePrimaryType() { + let isGroupedType = false; + const oldNoAnonFunctionType = _base.state.noAnonFunctionType; + + switch (_base.state.type) { + case _types.TokenType.name: { + if (_util.isContextual.call(void 0, _keywords.ContextualKeyword._interface)) { + flowParseInterfaceType(); + return; + } + _expression.parseIdentifier.call(void 0, ); + flowParseGenericType(); + return; + } + + case _types.TokenType.braceL: + flowParseObjectType(false, false, false); + return; + + case _types.TokenType.braceBarL: + flowParseObjectType(false, true, false); + return; + + case _types.TokenType.bracketL: + flowParseTupleType(); + return; + + case _types.TokenType.lessThan: + flowParseTypeParameterDeclaration(); + _util.expect.call(void 0, _types.TokenType.parenL); + flowParseFunctionTypeParams(); + _util.expect.call(void 0, _types.TokenType.parenR); + _util.expect.call(void 0, _types.TokenType.arrow); + flowParseType(); + return; + + case _types.TokenType.parenL: + _index.next.call(void 0, ); + + // Check to see if this is actually a grouped type + if (!_index.match.call(void 0, _types.TokenType.parenR) && !_index.match.call(void 0, _types.TokenType.ellipsis)) { + if (_index.match.call(void 0, _types.TokenType.name)) { + const token = _index.lookaheadType.call(void 0, ); + isGroupedType = token !== _types.TokenType.question && token !== _types.TokenType.colon; + } else { + isGroupedType = true; + } + } + + if (isGroupedType) { + _base.state.noAnonFunctionType = false; + flowParseType(); + _base.state.noAnonFunctionType = oldNoAnonFunctionType; + + // A `,` or a `) =>` means this is an anonymous function type + if ( + _base.state.noAnonFunctionType || + !(_index.match.call(void 0, _types.TokenType.comma) || (_index.match.call(void 0, _types.TokenType.parenR) && _index.lookaheadType.call(void 0, ) === _types.TokenType.arrow)) + ) { + _util.expect.call(void 0, _types.TokenType.parenR); + return; + } else { + // Eat a comma if there is one + _index.eat.call(void 0, _types.TokenType.comma); + } + } + + flowParseFunctionTypeParams(); + + _util.expect.call(void 0, _types.TokenType.parenR); + _util.expect.call(void 0, _types.TokenType.arrow); + flowParseType(); + return; + + case _types.TokenType.minus: + _index.next.call(void 0, ); + _expression.parseLiteral.call(void 0, ); + return; + + case _types.TokenType.string: + case _types.TokenType.num: + case _types.TokenType._true: + case _types.TokenType._false: + case _types.TokenType._null: + case _types.TokenType._this: + case _types.TokenType._void: + case _types.TokenType.star: + _index.next.call(void 0, ); + return; + + default: + if (_base.state.type === _types.TokenType._typeof) { + flowParseTypeofType(); + return; + } else if (_base.state.type & _types.TokenType.IS_KEYWORD) { + _index.next.call(void 0, ); + _base.state.tokens[_base.state.tokens.length - 1].type = _types.TokenType.name; + return; + } + } + + _util.unexpected.call(void 0, ); +} + +function flowParsePostfixType() { + flowParsePrimaryType(); + while (!_util.canInsertSemicolon.call(void 0, ) && (_index.match.call(void 0, _types.TokenType.bracketL) || _index.match.call(void 0, _types.TokenType.questionDot))) { + _index.eat.call(void 0, _types.TokenType.questionDot); + _util.expect.call(void 0, _types.TokenType.bracketL); + if (_index.eat.call(void 0, _types.TokenType.bracketR)) { + // Array type + } else { + // Indexed access type + flowParseType(); + _util.expect.call(void 0, _types.TokenType.bracketR); + } + } +} + +function flowParsePrefixType() { + if (_index.eat.call(void 0, _types.TokenType.question)) { + flowParsePrefixType(); + } else { + flowParsePostfixType(); + } +} + +function flowParseAnonFunctionWithoutParens() { + flowParsePrefixType(); + if (!_base.state.noAnonFunctionType && _index.eat.call(void 0, _types.TokenType.arrow)) { + flowParseType(); + } +} + +function flowParseIntersectionType() { + _index.eat.call(void 0, _types.TokenType.bitwiseAND); + flowParseAnonFunctionWithoutParens(); + while (_index.eat.call(void 0, _types.TokenType.bitwiseAND)) { + flowParseAnonFunctionWithoutParens(); + } +} + +function flowParseUnionType() { + _index.eat.call(void 0, _types.TokenType.bitwiseOR); + flowParseIntersectionType(); + while (_index.eat.call(void 0, _types.TokenType.bitwiseOR)) { + flowParseIntersectionType(); + } +} + +function flowParseType() { + flowParseUnionType(); +} + + function flowParseTypeAnnotation() { + flowParseTypeInitialiser(); +} exports.flowParseTypeAnnotation = flowParseTypeAnnotation; + +function flowParseTypeAnnotatableIdentifier() { + _expression.parseIdentifier.call(void 0, ); + if (_index.match.call(void 0, _types.TokenType.colon)) { + flowParseTypeAnnotation(); + } +} + + function flowParseVariance() { + if (_index.match.call(void 0, _types.TokenType.plus) || _index.match.call(void 0, _types.TokenType.minus)) { + _index.next.call(void 0, ); + _base.state.tokens[_base.state.tokens.length - 1].isType = true; + } +} exports.flowParseVariance = flowParseVariance; + +// ================================== +// Overrides +// ================================== + + function flowParseFunctionBodyAndFinish(funcContextId) { + // For arrow functions, `parseArrow` handles the return type itself. + if (_index.match.call(void 0, _types.TokenType.colon)) { + flowParseTypeAndPredicateInitialiser(); + } + + _expression.parseFunctionBody.call(void 0, false, funcContextId); +} exports.flowParseFunctionBodyAndFinish = flowParseFunctionBodyAndFinish; + + function flowParseSubscript( + startTokenIndex, + noCalls, + stopState, +) { + if (_index.match.call(void 0, _types.TokenType.questionDot) && _index.lookaheadType.call(void 0, ) === _types.TokenType.lessThan) { + if (noCalls) { + stopState.stop = true; + return; + } + _index.next.call(void 0, ); + flowParseTypeParameterInstantiation(); + _util.expect.call(void 0, _types.TokenType.parenL); + _expression.parseCallExpressionArguments.call(void 0, ); + return; + } else if (!noCalls && _index.match.call(void 0, _types.TokenType.lessThan)) { + const snapshot = _base.state.snapshot(); + flowParseTypeParameterInstantiation(); + _util.expect.call(void 0, _types.TokenType.parenL); + _expression.parseCallExpressionArguments.call(void 0, ); + if (_base.state.error) { + _base.state.restoreFromSnapshot(snapshot); + } else { + return; + } + } + _expression.baseParseSubscript.call(void 0, startTokenIndex, noCalls, stopState); +} exports.flowParseSubscript = flowParseSubscript; + + function flowStartParseNewArguments() { + if (_index.match.call(void 0, _types.TokenType.lessThan)) { + const snapshot = _base.state.snapshot(); + flowParseTypeParameterInstantiation(); + if (_base.state.error) { + _base.state.restoreFromSnapshot(snapshot); + } + } +} exports.flowStartParseNewArguments = flowStartParseNewArguments; + +// interfaces + function flowTryParseStatement() { + if (_index.match.call(void 0, _types.TokenType.name) && _base.state.contextualKeyword === _keywords.ContextualKeyword._interface) { + const oldIsType = _index.pushTypeContext.call(void 0, 0); + _index.next.call(void 0, ); + flowParseInterface(); + _index.popTypeContext.call(void 0, oldIsType); + return true; + } else if (_util.isContextual.call(void 0, _keywords.ContextualKeyword._enum)) { + flowParseEnumDeclaration(); + return true; + } + return false; +} exports.flowTryParseStatement = flowTryParseStatement; + + function flowTryParseExportDefaultExpression() { + if (_util.isContextual.call(void 0, _keywords.ContextualKeyword._enum)) { + flowParseEnumDeclaration(); + return true; + } + return false; +} exports.flowTryParseExportDefaultExpression = flowTryParseExportDefaultExpression; + +// declares, interfaces and type aliases + function flowParseIdentifierStatement(contextualKeyword) { + if (contextualKeyword === _keywords.ContextualKeyword._declare) { + if ( + _index.match.call(void 0, _types.TokenType._class) || + _index.match.call(void 0, _types.TokenType.name) || + _index.match.call(void 0, _types.TokenType._function) || + _index.match.call(void 0, _types.TokenType._var) || + _index.match.call(void 0, _types.TokenType._export) + ) { + const oldIsType = _index.pushTypeContext.call(void 0, 1); + flowParseDeclare(); + _index.popTypeContext.call(void 0, oldIsType); + } + } else if (_index.match.call(void 0, _types.TokenType.name)) { + if (contextualKeyword === _keywords.ContextualKeyword._interface) { + const oldIsType = _index.pushTypeContext.call(void 0, 1); + flowParseInterface(); + _index.popTypeContext.call(void 0, oldIsType); + } else if (contextualKeyword === _keywords.ContextualKeyword._type) { + const oldIsType = _index.pushTypeContext.call(void 0, 1); + flowParseTypeAlias(); + _index.popTypeContext.call(void 0, oldIsType); + } else if (contextualKeyword === _keywords.ContextualKeyword._opaque) { + const oldIsType = _index.pushTypeContext.call(void 0, 1); + flowParseOpaqueType(false); + _index.popTypeContext.call(void 0, oldIsType); + } + } + _util.semicolon.call(void 0, ); +} exports.flowParseIdentifierStatement = flowParseIdentifierStatement; + +// export type + function flowShouldParseExportDeclaration() { + return ( + _util.isContextual.call(void 0, _keywords.ContextualKeyword._type) || + _util.isContextual.call(void 0, _keywords.ContextualKeyword._interface) || + _util.isContextual.call(void 0, _keywords.ContextualKeyword._opaque) || + _util.isContextual.call(void 0, _keywords.ContextualKeyword._enum) + ); +} exports.flowShouldParseExportDeclaration = flowShouldParseExportDeclaration; + + function flowShouldDisallowExportDefaultSpecifier() { + return ( + _index.match.call(void 0, _types.TokenType.name) && + (_base.state.contextualKeyword === _keywords.ContextualKeyword._type || + _base.state.contextualKeyword === _keywords.ContextualKeyword._interface || + _base.state.contextualKeyword === _keywords.ContextualKeyword._opaque || + _base.state.contextualKeyword === _keywords.ContextualKeyword._enum) + ); +} exports.flowShouldDisallowExportDefaultSpecifier = flowShouldDisallowExportDefaultSpecifier; + + function flowParseExportDeclaration() { + if (_util.isContextual.call(void 0, _keywords.ContextualKeyword._type)) { + const oldIsType = _index.pushTypeContext.call(void 0, 1); + _index.next.call(void 0, ); + + if (_index.match.call(void 0, _types.TokenType.braceL)) { + // export type { foo, bar }; + _statement.parseExportSpecifiers.call(void 0, ); + _statement.parseExportFrom.call(void 0, ); + } else { + // export type Foo = Bar; + flowParseTypeAlias(); + } + _index.popTypeContext.call(void 0, oldIsType); + } else if (_util.isContextual.call(void 0, _keywords.ContextualKeyword._opaque)) { + const oldIsType = _index.pushTypeContext.call(void 0, 1); + _index.next.call(void 0, ); + // export opaque type Foo = Bar; + flowParseOpaqueType(false); + _index.popTypeContext.call(void 0, oldIsType); + } else if (_util.isContextual.call(void 0, _keywords.ContextualKeyword._interface)) { + const oldIsType = _index.pushTypeContext.call(void 0, 1); + _index.next.call(void 0, ); + flowParseInterface(); + _index.popTypeContext.call(void 0, oldIsType); + } else { + _statement.parseStatement.call(void 0, true); + } +} exports.flowParseExportDeclaration = flowParseExportDeclaration; + + function flowShouldParseExportStar() { + return _index.match.call(void 0, _types.TokenType.star) || (_util.isContextual.call(void 0, _keywords.ContextualKeyword._type) && _index.lookaheadType.call(void 0, ) === _types.TokenType.star); +} exports.flowShouldParseExportStar = flowShouldParseExportStar; + + function flowParseExportStar() { + if (_util.eatContextual.call(void 0, _keywords.ContextualKeyword._type)) { + const oldIsType = _index.pushTypeContext.call(void 0, 2); + _statement.baseParseExportStar.call(void 0, ); + _index.popTypeContext.call(void 0, oldIsType); + } else { + _statement.baseParseExportStar.call(void 0, ); + } +} exports.flowParseExportStar = flowParseExportStar; + +// parse a the super class type parameters and implements + function flowAfterParseClassSuper(hasSuper) { + if (hasSuper && _index.match.call(void 0, _types.TokenType.lessThan)) { + flowParseTypeParameterInstantiation(); + } + if (_util.isContextual.call(void 0, _keywords.ContextualKeyword._implements)) { + const oldIsType = _index.pushTypeContext.call(void 0, 0); + _index.next.call(void 0, ); + _base.state.tokens[_base.state.tokens.length - 1].type = _types.TokenType._implements; + do { + flowParseRestrictedIdentifier(); + if (_index.match.call(void 0, _types.TokenType.lessThan)) { + flowParseTypeParameterInstantiation(); + } + } while (_index.eat.call(void 0, _types.TokenType.comma)); + _index.popTypeContext.call(void 0, oldIsType); + } +} exports.flowAfterParseClassSuper = flowAfterParseClassSuper; + +// parse type parameters for object method shorthand + function flowStartParseObjPropValue() { + // method shorthand + if (_index.match.call(void 0, _types.TokenType.lessThan)) { + flowParseTypeParameterDeclaration(); + if (!_index.match.call(void 0, _types.TokenType.parenL)) _util.unexpected.call(void 0, ); + } +} exports.flowStartParseObjPropValue = flowStartParseObjPropValue; + + function flowParseAssignableListItemTypes() { + const oldIsType = _index.pushTypeContext.call(void 0, 0); + _index.eat.call(void 0, _types.TokenType.question); + if (_index.match.call(void 0, _types.TokenType.colon)) { + flowParseTypeAnnotation(); + } + _index.popTypeContext.call(void 0, oldIsType); +} exports.flowParseAssignableListItemTypes = flowParseAssignableListItemTypes; + +// parse typeof and type imports + function flowStartParseImportSpecifiers() { + if (_index.match.call(void 0, _types.TokenType._typeof) || _util.isContextual.call(void 0, _keywords.ContextualKeyword._type)) { + const lh = _index.lookaheadTypeAndKeyword.call(void 0, ); + if (isMaybeDefaultImport(lh) || lh.type === _types.TokenType.braceL || lh.type === _types.TokenType.star) { + _index.next.call(void 0, ); + } + } +} exports.flowStartParseImportSpecifiers = flowStartParseImportSpecifiers; + +// parse import-type/typeof shorthand + function flowParseImportSpecifier() { + const isTypeKeyword = + _base.state.contextualKeyword === _keywords.ContextualKeyword._type || _base.state.type === _types.TokenType._typeof; + if (isTypeKeyword) { + _index.next.call(void 0, ); + } else { + _expression.parseIdentifier.call(void 0, ); + } + + if (_util.isContextual.call(void 0, _keywords.ContextualKeyword._as) && !_util.isLookaheadContextual.call(void 0, _keywords.ContextualKeyword._as)) { + _expression.parseIdentifier.call(void 0, ); + if (isTypeKeyword && !_index.match.call(void 0, _types.TokenType.name) && !(_base.state.type & _types.TokenType.IS_KEYWORD)) { + // `import {type as ,` or `import {type as }` + } else { + // `import {type as foo` + _expression.parseIdentifier.call(void 0, ); + } + } else { + if (isTypeKeyword && (_index.match.call(void 0, _types.TokenType.name) || !!(_base.state.type & _types.TokenType.IS_KEYWORD))) { + // `import {type foo` + _expression.parseIdentifier.call(void 0, ); + } + if (_util.eatContextual.call(void 0, _keywords.ContextualKeyword._as)) { + _expression.parseIdentifier.call(void 0, ); + } + } +} exports.flowParseImportSpecifier = flowParseImportSpecifier; + +// parse function type parameters - function foo<T>() {} + function flowStartParseFunctionParams() { + // Originally this checked if the method is a getter/setter, but if it was, we'd crash soon + // anyway, so don't try to propagate that information. + if (_index.match.call(void 0, _types.TokenType.lessThan)) { + const oldIsType = _index.pushTypeContext.call(void 0, 0); + flowParseTypeParameterDeclaration(); + _index.popTypeContext.call(void 0, oldIsType); + } +} exports.flowStartParseFunctionParams = flowStartParseFunctionParams; + +// parse flow type annotations on variable declarator heads - let foo: string = bar + function flowAfterParseVarHead() { + if (_index.match.call(void 0, _types.TokenType.colon)) { + flowParseTypeAnnotation(); + } +} exports.flowAfterParseVarHead = flowAfterParseVarHead; + +// parse the return type of an async arrow function - let foo = (async (): number => {}); + function flowStartParseAsyncArrowFromCallExpression() { + if (_index.match.call(void 0, _types.TokenType.colon)) { + const oldNoAnonFunctionType = _base.state.noAnonFunctionType; + _base.state.noAnonFunctionType = true; + flowParseTypeAnnotation(); + _base.state.noAnonFunctionType = oldNoAnonFunctionType; + } +} exports.flowStartParseAsyncArrowFromCallExpression = flowStartParseAsyncArrowFromCallExpression; + +// We need to support type parameter declarations for arrow functions. This +// is tricky. There are three situations we need to handle +// +// 1. This is either JSX or an arrow function. We'll try JSX first. If that +// fails, we'll try an arrow function. If that fails, we'll throw the JSX +// error. +// 2. This is an arrow function. We'll parse the type parameter declaration, +// parse the rest, make sure the rest is an arrow function, and go from +// there +// 3. This is neither. Just call the super method + function flowParseMaybeAssign(noIn, isWithinParens) { + if (_index.match.call(void 0, _types.TokenType.lessThan)) { + const snapshot = _base.state.snapshot(); + let wasArrow = _expression.baseParseMaybeAssign.call(void 0, noIn, isWithinParens); + if (_base.state.error) { + _base.state.restoreFromSnapshot(snapshot); + _base.state.type = _types.TokenType.typeParameterStart; + } else { + return wasArrow; + } + + const oldIsType = _index.pushTypeContext.call(void 0, 0); + flowParseTypeParameterDeclaration(); + _index.popTypeContext.call(void 0, oldIsType); + wasArrow = _expression.baseParseMaybeAssign.call(void 0, noIn, isWithinParens); + if (wasArrow) { + return true; + } + _util.unexpected.call(void 0, ); + } + + return _expression.baseParseMaybeAssign.call(void 0, noIn, isWithinParens); +} exports.flowParseMaybeAssign = flowParseMaybeAssign; + +// handle return types for arrow functions + function flowParseArrow() { + if (_index.match.call(void 0, _types.TokenType.colon)) { + const oldIsType = _index.pushTypeContext.call(void 0, 0); + const snapshot = _base.state.snapshot(); + + const oldNoAnonFunctionType = _base.state.noAnonFunctionType; + _base.state.noAnonFunctionType = true; + flowParseTypeAndPredicateInitialiser(); + _base.state.noAnonFunctionType = oldNoAnonFunctionType; + + if (_util.canInsertSemicolon.call(void 0, )) _util.unexpected.call(void 0, ); + if (!_index.match.call(void 0, _types.TokenType.arrow)) _util.unexpected.call(void 0, ); + + if (_base.state.error) { + _base.state.restoreFromSnapshot(snapshot); + } + _index.popTypeContext.call(void 0, oldIsType); + } + return _index.eat.call(void 0, _types.TokenType.arrow); +} exports.flowParseArrow = flowParseArrow; + + function flowParseSubscripts(startTokenIndex, noCalls = false) { + if ( + _base.state.tokens[_base.state.tokens.length - 1].contextualKeyword === _keywords.ContextualKeyword._async && + _index.match.call(void 0, _types.TokenType.lessThan) + ) { + const snapshot = _base.state.snapshot(); + const wasArrow = parseAsyncArrowWithTypeParameters(); + if (wasArrow && !_base.state.error) { + return; + } + _base.state.restoreFromSnapshot(snapshot); + } + + _expression.baseParseSubscripts.call(void 0, startTokenIndex, noCalls); +} exports.flowParseSubscripts = flowParseSubscripts; + +// Returns true if there was an arrow function here. +function parseAsyncArrowWithTypeParameters() { + _base.state.scopeDepth++; + const startTokenIndex = _base.state.tokens.length; + _statement.parseFunctionParams.call(void 0, ); + if (!_expression.parseArrow.call(void 0, )) { + return false; + } + _expression.parseArrowExpression.call(void 0, startTokenIndex); + return true; +} + +function flowParseEnumDeclaration() { + _util.expectContextual.call(void 0, _keywords.ContextualKeyword._enum); + _base.state.tokens[_base.state.tokens.length - 1].type = _types.TokenType._enum; + _expression.parseIdentifier.call(void 0, ); + flowParseEnumBody(); +} + +function flowParseEnumBody() { + if (_util.eatContextual.call(void 0, _keywords.ContextualKeyword._of)) { + _index.next.call(void 0, ); + } + _util.expect.call(void 0, _types.TokenType.braceL); + flowParseEnumMembers(); + _util.expect.call(void 0, _types.TokenType.braceR); +} + +function flowParseEnumMembers() { + while (!_index.match.call(void 0, _types.TokenType.braceR) && !_base.state.error) { + if (_index.eat.call(void 0, _types.TokenType.ellipsis)) { + break; + } + flowParseEnumMember(); + if (!_index.match.call(void 0, _types.TokenType.braceR)) { + _util.expect.call(void 0, _types.TokenType.comma); + } + } +} + +function flowParseEnumMember() { + _expression.parseIdentifier.call(void 0, ); + if (_index.eat.call(void 0, _types.TokenType.eq)) { + // Flow enum values are always just one token (a string, number, or boolean literal). + _index.next.call(void 0, ); + } +} diff --git a/node_modules/sucrase/dist/parser/plugins/jsx/index.js b/node_modules/sucrase/dist/parser/plugins/jsx/index.js new file mode 100644 index 0000000..41797de --- /dev/null +++ b/node_modules/sucrase/dist/parser/plugins/jsx/index.js @@ -0,0 +1,367 @@ +"use strict";Object.defineProperty(exports, "__esModule", {value: true}); + + + + + + + + + +var _index = require('../../tokenizer/index'); +var _types = require('../../tokenizer/types'); +var _base = require('../../traverser/base'); +var _expression = require('../../traverser/expression'); +var _util = require('../../traverser/util'); +var _charcodes = require('../../util/charcodes'); +var _identifier = require('../../util/identifier'); +var _typescript = require('../typescript'); + +/** + * Read token with JSX contents. + * + * In addition to detecting jsxTagStart and also regular tokens that might be + * part of an expression, this code detects the start and end of text ranges + * within JSX children. In order to properly count the number of children, we + * distinguish jsxText from jsxEmptyText, which is a text range that simplifies + * to the empty string after JSX whitespace trimming. + * + * It turns out that a JSX text range will simplify to the empty string if and + * only if both of these conditions hold: + * - The range consists entirely of whitespace characters (only counting space, + * tab, \r, and \n). + * - The range has at least one newline. + * This can be proven by analyzing any implementation of whitespace trimming, + * e.g. formatJSXTextLiteral in Sucrase or cleanJSXElementLiteralChild in Babel. + */ +function jsxReadToken() { + let sawNewline = false; + let sawNonWhitespace = false; + while (true) { + if (_base.state.pos >= _base.input.length) { + _util.unexpected.call(void 0, "Unterminated JSX contents"); + return; + } + + const ch = _base.input.charCodeAt(_base.state.pos); + if (ch === _charcodes.charCodes.lessThan || ch === _charcodes.charCodes.leftCurlyBrace) { + if (_base.state.pos === _base.state.start) { + if (ch === _charcodes.charCodes.lessThan) { + _base.state.pos++; + _index.finishToken.call(void 0, _types.TokenType.jsxTagStart); + return; + } + _index.getTokenFromCode.call(void 0, ch); + return; + } + if (sawNewline && !sawNonWhitespace) { + _index.finishToken.call(void 0, _types.TokenType.jsxEmptyText); + } else { + _index.finishToken.call(void 0, _types.TokenType.jsxText); + } + return; + } + + // This is part of JSX text. + if (ch === _charcodes.charCodes.lineFeed) { + sawNewline = true; + } else if (ch !== _charcodes.charCodes.space && ch !== _charcodes.charCodes.carriageReturn && ch !== _charcodes.charCodes.tab) { + sawNonWhitespace = true; + } + _base.state.pos++; + } +} + +function jsxReadString(quote) { + _base.state.pos++; + for (;;) { + if (_base.state.pos >= _base.input.length) { + _util.unexpected.call(void 0, "Unterminated string constant"); + return; + } + + const ch = _base.input.charCodeAt(_base.state.pos); + if (ch === quote) { + _base.state.pos++; + break; + } + _base.state.pos++; + } + _index.finishToken.call(void 0, _types.TokenType.string); +} + +// Read a JSX identifier (valid tag or attribute name). +// +// Optimized version since JSX identifiers can't contain +// escape characters and so can be read as single slice. +// Also assumes that first character was already checked +// by isIdentifierStart in readToken. + +function jsxReadWord() { + let ch; + do { + if (_base.state.pos > _base.input.length) { + _util.unexpected.call(void 0, "Unexpectedly reached the end of input."); + return; + } + ch = _base.input.charCodeAt(++_base.state.pos); + } while (_identifier.IS_IDENTIFIER_CHAR[ch] || ch === _charcodes.charCodes.dash); + _index.finishToken.call(void 0, _types.TokenType.jsxName); +} + +// Parse next token as JSX identifier +function jsxParseIdentifier() { + nextJSXTagToken(); +} + +// Parse namespaced identifier. +function jsxParseNamespacedName(identifierRole) { + jsxParseIdentifier(); + if (!_index.eat.call(void 0, _types.TokenType.colon)) { + // Plain identifier, so this is an access. + _base.state.tokens[_base.state.tokens.length - 1].identifierRole = identifierRole; + return; + } + // Process the second half of the namespaced name. + jsxParseIdentifier(); +} + +// Parses element name in any form - namespaced, member +// or single identifier. +function jsxParseElementName() { + const firstTokenIndex = _base.state.tokens.length; + jsxParseNamespacedName(_index.IdentifierRole.Access); + let hadDot = false; + while (_index.match.call(void 0, _types.TokenType.dot)) { + hadDot = true; + nextJSXTagToken(); + jsxParseIdentifier(); + } + // For tags like <div> with a lowercase letter and no dots, the name is + // actually *not* an identifier access, since it's referring to a built-in + // tag name. Remove the identifier role in this case so that it's not + // accidentally transformed by the imports transform when preserving JSX. + if (!hadDot) { + const firstToken = _base.state.tokens[firstTokenIndex]; + const firstChar = _base.input.charCodeAt(firstToken.start); + if (firstChar >= _charcodes.charCodes.lowercaseA && firstChar <= _charcodes.charCodes.lowercaseZ) { + firstToken.identifierRole = null; + } + } +} + +// Parses any type of JSX attribute value. +function jsxParseAttributeValue() { + switch (_base.state.type) { + case _types.TokenType.braceL: + _index.next.call(void 0, ); + _expression.parseExpression.call(void 0, ); + nextJSXTagToken(); + return; + + case _types.TokenType.jsxTagStart: + jsxParseElement(); + nextJSXTagToken(); + return; + + case _types.TokenType.string: + nextJSXTagToken(); + return; + + default: + _util.unexpected.call(void 0, "JSX value should be either an expression or a quoted JSX text"); + } +} + +// Parse JSX spread child, after already processing the { +// Does not parse the closing } +function jsxParseSpreadChild() { + _util.expect.call(void 0, _types.TokenType.ellipsis); + _expression.parseExpression.call(void 0, ); +} + +// Parses JSX opening tag starting after "<". +// Returns true if the tag was self-closing. +// Does not parse the last token. +function jsxParseOpeningElement(initialTokenIndex) { + if (_index.match.call(void 0, _types.TokenType.jsxTagEnd)) { + // This is an open-fragment. + return false; + } + jsxParseElementName(); + if (_base.isTypeScriptEnabled) { + _typescript.tsTryParseJSXTypeArgument.call(void 0, ); + } + let hasSeenPropSpread = false; + while (!_index.match.call(void 0, _types.TokenType.slash) && !_index.match.call(void 0, _types.TokenType.jsxTagEnd) && !_base.state.error) { + if (_index.eat.call(void 0, _types.TokenType.braceL)) { + hasSeenPropSpread = true; + _util.expect.call(void 0, _types.TokenType.ellipsis); + _expression.parseMaybeAssign.call(void 0, ); + // } + nextJSXTagToken(); + continue; + } + if ( + hasSeenPropSpread && + _base.state.end - _base.state.start === 3 && + _base.input.charCodeAt(_base.state.start) === _charcodes.charCodes.lowercaseK && + _base.input.charCodeAt(_base.state.start + 1) === _charcodes.charCodes.lowercaseE && + _base.input.charCodeAt(_base.state.start + 2) === _charcodes.charCodes.lowercaseY + ) { + _base.state.tokens[initialTokenIndex].jsxRole = _index.JSXRole.KeyAfterPropSpread; + } + jsxParseNamespacedName(_index.IdentifierRole.ObjectKey); + if (_index.match.call(void 0, _types.TokenType.eq)) { + nextJSXTagToken(); + jsxParseAttributeValue(); + } + } + const isSelfClosing = _index.match.call(void 0, _types.TokenType.slash); + if (isSelfClosing) { + // / + nextJSXTagToken(); + } + return isSelfClosing; +} + +// Parses JSX closing tag starting after "</". +// Does not parse the last token. +function jsxParseClosingElement() { + if (_index.match.call(void 0, _types.TokenType.jsxTagEnd)) { + // Fragment syntax, so we immediately have a tag end. + return; + } + jsxParseElementName(); +} + +// Parses entire JSX element, including its opening tag +// (starting after "<"), attributes, contents and closing tag. +// Does not parse the last token. +function jsxParseElementAt() { + const initialTokenIndex = _base.state.tokens.length - 1; + _base.state.tokens[initialTokenIndex].jsxRole = _index.JSXRole.NoChildren; + let numExplicitChildren = 0; + const isSelfClosing = jsxParseOpeningElement(initialTokenIndex); + if (!isSelfClosing) { + nextJSXExprToken(); + while (true) { + switch (_base.state.type) { + case _types.TokenType.jsxTagStart: + nextJSXTagToken(); + if (_index.match.call(void 0, _types.TokenType.slash)) { + nextJSXTagToken(); + jsxParseClosingElement(); + // Key after prop spread takes precedence over number of children, + // since it means we switch to createElement, which doesn't care + // about number of children. + if (_base.state.tokens[initialTokenIndex].jsxRole !== _index.JSXRole.KeyAfterPropSpread) { + if (numExplicitChildren === 1) { + _base.state.tokens[initialTokenIndex].jsxRole = _index.JSXRole.OneChild; + } else if (numExplicitChildren > 1) { + _base.state.tokens[initialTokenIndex].jsxRole = _index.JSXRole.StaticChildren; + } + } + return; + } + numExplicitChildren++; + jsxParseElementAt(); + nextJSXExprToken(); + break; + + case _types.TokenType.jsxText: + numExplicitChildren++; + nextJSXExprToken(); + break; + + case _types.TokenType.jsxEmptyText: + nextJSXExprToken(); + break; + + case _types.TokenType.braceL: + _index.next.call(void 0, ); + if (_index.match.call(void 0, _types.TokenType.ellipsis)) { + jsxParseSpreadChild(); + nextJSXExprToken(); + // Spread children are a mechanism to explicitly mark children as + // static, so count it as 2 children to satisfy the "more than one + // child" condition. + numExplicitChildren += 2; + } else { + // If we see {}, this is an empty pseudo-expression that doesn't + // count as a child. + if (!_index.match.call(void 0, _types.TokenType.braceR)) { + numExplicitChildren++; + _expression.parseExpression.call(void 0, ); + } + nextJSXExprToken(); + } + + break; + + // istanbul ignore next - should never happen + default: + _util.unexpected.call(void 0, ); + return; + } + } + } +} + +// Parses entire JSX element from current position. +// Does not parse the last token. + function jsxParseElement() { + nextJSXTagToken(); + jsxParseElementAt(); +} exports.jsxParseElement = jsxParseElement; + +// ================================== +// Overrides +// ================================== + + function nextJSXTagToken() { + _base.state.tokens.push(new (0, _index.Token)()); + _index.skipSpace.call(void 0, ); + _base.state.start = _base.state.pos; + const code = _base.input.charCodeAt(_base.state.pos); + + if (_identifier.IS_IDENTIFIER_START[code]) { + jsxReadWord(); + } else if (code === _charcodes.charCodes.quotationMark || code === _charcodes.charCodes.apostrophe) { + jsxReadString(code); + } else { + // The following tokens are just one character each. + ++_base.state.pos; + switch (code) { + case _charcodes.charCodes.greaterThan: + _index.finishToken.call(void 0, _types.TokenType.jsxTagEnd); + break; + case _charcodes.charCodes.lessThan: + _index.finishToken.call(void 0, _types.TokenType.jsxTagStart); + break; + case _charcodes.charCodes.slash: + _index.finishToken.call(void 0, _types.TokenType.slash); + break; + case _charcodes.charCodes.equalsTo: + _index.finishToken.call(void 0, _types.TokenType.eq); + break; + case _charcodes.charCodes.leftCurlyBrace: + _index.finishToken.call(void 0, _types.TokenType.braceL); + break; + case _charcodes.charCodes.dot: + _index.finishToken.call(void 0, _types.TokenType.dot); + break; + case _charcodes.charCodes.colon: + _index.finishToken.call(void 0, _types.TokenType.colon); + break; + default: + _util.unexpected.call(void 0, ); + } + } +} exports.nextJSXTagToken = nextJSXTagToken; + +function nextJSXExprToken() { + _base.state.tokens.push(new (0, _index.Token)()); + _base.state.start = _base.state.pos; + jsxReadToken(); +} diff --git a/node_modules/sucrase/dist/parser/plugins/jsx/xhtml.js b/node_modules/sucrase/dist/parser/plugins/jsx/xhtml.js new file mode 100644 index 0000000..d8e91c5 --- /dev/null +++ b/node_modules/sucrase/dist/parser/plugins/jsx/xhtml.js @@ -0,0 +1,256 @@ +"use strict";Object.defineProperty(exports, "__esModule", {value: true});// Use a Map rather than object to avoid unexpected __proto__ access. +exports. default = new Map([ + ["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"], +]); diff --git a/node_modules/sucrase/dist/parser/plugins/types.js b/node_modules/sucrase/dist/parser/plugins/types.js new file mode 100644 index 0000000..c892994 --- /dev/null +++ b/node_modules/sucrase/dist/parser/plugins/types.js @@ -0,0 +1,37 @@ +"use strict";Object.defineProperty(exports, "__esModule", {value: true});var _index = require('../tokenizer/index'); +var _types = require('../tokenizer/types'); +var _base = require('../traverser/base'); +var _expression = require('../traverser/expression'); +var _flow = require('./flow'); +var _typescript = require('./typescript'); + +/** + * Common parser code for TypeScript and Flow. + */ + +// An apparent conditional expression could actually be an optional parameter in an arrow function. + function typedParseConditional(noIn) { + // If we see ?:, this can't possibly be a valid conditional. typedParseParenItem will be called + // later to finish off the arrow parameter. We also need to handle bare ? tokens for optional + // parameters without type annotations, i.e. ?, and ?) . + if (_index.match.call(void 0, _types.TokenType.question)) { + const nextType = _index.lookaheadType.call(void 0, ); + if (nextType === _types.TokenType.colon || nextType === _types.TokenType.comma || nextType === _types.TokenType.parenR) { + return; + } + } + _expression.baseParseConditional.call(void 0, noIn); +} exports.typedParseConditional = typedParseConditional; + +// Note: These "type casts" are *not* valid TS expressions. +// But we parse them here and change them when completing the arrow function. + function typedParseParenItem() { + _index.eatTypeToken.call(void 0, _types.TokenType.question); + if (_index.match.call(void 0, _types.TokenType.colon)) { + if (_base.isTypeScriptEnabled) { + _typescript.tsParseTypeAnnotation.call(void 0, ); + } else if (_base.isFlowEnabled) { + _flow.flowParseTypeAnnotation.call(void 0, ); + } + } +} exports.typedParseParenItem = typedParseParenItem; diff --git a/node_modules/sucrase/dist/parser/plugins/typescript.js b/node_modules/sucrase/dist/parser/plugins/typescript.js new file mode 100644 index 0000000..d1ec6d3 --- /dev/null +++ b/node_modules/sucrase/dist/parser/plugins/typescript.js @@ -0,0 +1,1632 @@ +"use strict";Object.defineProperty(exports, "__esModule", {value: true}); + + + + + + + + + + + +var _index = require('../tokenizer/index'); +var _keywords = require('../tokenizer/keywords'); +var _types = require('../tokenizer/types'); +var _base = require('../traverser/base'); + + + + + + + + + + + + + + + +var _expression = require('../traverser/expression'); +var _lval = require('../traverser/lval'); + + + + + + + + +var _statement = require('../traverser/statement'); + + + + + + + + + + + +var _util = require('../traverser/util'); +var _jsx = require('./jsx'); + +function tsIsIdentifier() { + // TODO: actually a bit more complex in TypeScript, but shouldn't matter. + // See https://github.com/Microsoft/TypeScript/issues/15008 + return _index.match.call(void 0, _types.TokenType.name); +} + +function isLiteralPropertyName() { + return ( + _index.match.call(void 0, _types.TokenType.name) || + Boolean(_base.state.type & _types.TokenType.IS_KEYWORD) || + _index.match.call(void 0, _types.TokenType.string) || + _index.match.call(void 0, _types.TokenType.num) || + _index.match.call(void 0, _types.TokenType.bigint) || + _index.match.call(void 0, _types.TokenType.decimal) + ); +} + +function tsNextTokenCanFollowModifier() { + // Note: TypeScript's implementation is much more complicated because + // more things are considered modifiers there. + // This implementation only handles modifiers not handled by babylon itself. And "static". + // TODO: Would be nice to avoid lookahead. Want a hasLineBreakUpNext() method... + const snapshot = _base.state.snapshot(); + + _index.next.call(void 0, ); + const canFollowModifier = + (_index.match.call(void 0, _types.TokenType.bracketL) || + _index.match.call(void 0, _types.TokenType.braceL) || + _index.match.call(void 0, _types.TokenType.star) || + _index.match.call(void 0, _types.TokenType.ellipsis) || + _index.match.call(void 0, _types.TokenType.hash) || + isLiteralPropertyName()) && + !_util.hasPrecedingLineBreak.call(void 0, ); + + if (canFollowModifier) { + return true; + } else { + _base.state.restoreFromSnapshot(snapshot); + return false; + } +} + + function tsParseModifiers(allowedModifiers) { + while (true) { + const modifier = tsParseModifier(allowedModifiers); + if (modifier === null) { + break; + } + } +} exports.tsParseModifiers = tsParseModifiers; + +/** Parses a modifier matching one the given modifier names. */ + function tsParseModifier( + allowedModifiers, +) { + if (!_index.match.call(void 0, _types.TokenType.name)) { + return null; + } + + const modifier = _base.state.contextualKeyword; + if (allowedModifiers.indexOf(modifier) !== -1 && tsNextTokenCanFollowModifier()) { + switch (modifier) { + case _keywords.ContextualKeyword._readonly: + _base.state.tokens[_base.state.tokens.length - 1].type = _types.TokenType._readonly; + break; + case _keywords.ContextualKeyword._abstract: + _base.state.tokens[_base.state.tokens.length - 1].type = _types.TokenType._abstract; + break; + case _keywords.ContextualKeyword._static: + _base.state.tokens[_base.state.tokens.length - 1].type = _types.TokenType._static; + break; + case _keywords.ContextualKeyword._public: + _base.state.tokens[_base.state.tokens.length - 1].type = _types.TokenType._public; + break; + case _keywords.ContextualKeyword._private: + _base.state.tokens[_base.state.tokens.length - 1].type = _types.TokenType._private; + break; + case _keywords.ContextualKeyword._protected: + _base.state.tokens[_base.state.tokens.length - 1].type = _types.TokenType._protected; + break; + case _keywords.ContextualKeyword._override: + _base.state.tokens[_base.state.tokens.length - 1].type = _types.TokenType._override; + break; + case _keywords.ContextualKeyword._declare: + _base.state.tokens[_base.state.tokens.length - 1].type = _types.TokenType._declare; + break; + default: + break; + } + return modifier; + } + return null; +} exports.tsParseModifier = tsParseModifier; + +function tsParseEntityName() { + _expression.parseIdentifier.call(void 0, ); + while (_index.eat.call(void 0, _types.TokenType.dot)) { + _expression.parseIdentifier.call(void 0, ); + } +} + +function tsParseTypeReference() { + tsParseEntityName(); + if (!_util.hasPrecedingLineBreak.call(void 0, ) && _index.match.call(void 0, _types.TokenType.lessThan)) { + tsParseTypeArguments(); + } +} + +function tsParseThisTypePredicate() { + _index.next.call(void 0, ); + tsParseTypeAnnotation(); +} + +function tsParseThisTypeNode() { + _index.next.call(void 0, ); +} + +function tsParseTypeQuery() { + _util.expect.call(void 0, _types.TokenType._typeof); + if (_index.match.call(void 0, _types.TokenType._import)) { + tsParseImportType(); + } else { + tsParseEntityName(); + } + if (!_util.hasPrecedingLineBreak.call(void 0, ) && _index.match.call(void 0, _types.TokenType.lessThan)) { + tsParseTypeArguments(); + } +} + +function tsParseImportType() { + _util.expect.call(void 0, _types.TokenType._import); + _util.expect.call(void 0, _types.TokenType.parenL); + _util.expect.call(void 0, _types.TokenType.string); + _util.expect.call(void 0, _types.TokenType.parenR); + if (_index.eat.call(void 0, _types.TokenType.dot)) { + tsParseEntityName(); + } + if (_index.match.call(void 0, _types.TokenType.lessThan)) { + tsParseTypeArguments(); + } +} + +function tsParseTypeParameter() { + _index.eat.call(void 0, _types.TokenType._const); + const hadIn = _index.eat.call(void 0, _types.TokenType._in); + const hadOut = _util.eatContextual.call(void 0, _keywords.ContextualKeyword._out); + _index.eat.call(void 0, _types.TokenType._const); + if ((hadIn || hadOut) && !_index.match.call(void 0, _types.TokenType.name)) { + // The "in" or "out" keyword must have actually been the type parameter + // name, so set it as the name. + _base.state.tokens[_base.state.tokens.length - 1].type = _types.TokenType.name; + } else { + _expression.parseIdentifier.call(void 0, ); + } + + if (_index.eat.call(void 0, _types.TokenType._extends)) { + tsParseType(); + } + if (_index.eat.call(void 0, _types.TokenType.eq)) { + tsParseType(); + } +} + + function tsTryParseTypeParameters() { + if (_index.match.call(void 0, _types.TokenType.lessThan)) { + tsParseTypeParameters(); + } +} exports.tsTryParseTypeParameters = tsTryParseTypeParameters; + +function tsParseTypeParameters() { + const oldIsType = _index.pushTypeContext.call(void 0, 0); + if (_index.match.call(void 0, _types.TokenType.lessThan) || _index.match.call(void 0, _types.TokenType.typeParameterStart)) { + _index.next.call(void 0, ); + } else { + _util.unexpected.call(void 0, ); + } + + while (!_index.eat.call(void 0, _types.TokenType.greaterThan) && !_base.state.error) { + tsParseTypeParameter(); + _index.eat.call(void 0, _types.TokenType.comma); + } + _index.popTypeContext.call(void 0, oldIsType); +} + +// Note: In TypeScript implementation we must provide `yieldContext` and `awaitContext`, +// but here it's always false, because this is only used for types. +function tsFillSignature(returnToken) { + // Arrow fns *must* have return token (`=>`). Normal functions can omit it. + const returnTokenRequired = returnToken === _types.TokenType.arrow; + tsTryParseTypeParameters(); + _util.expect.call(void 0, _types.TokenType.parenL); + // Create a scope even though we're doing type parsing so we don't accidentally + // treat params as top-level bindings. + _base.state.scopeDepth++; + tsParseBindingListForSignature(false /* isBlockScope */); + _base.state.scopeDepth--; + if (returnTokenRequired) { + tsParseTypeOrTypePredicateAnnotation(returnToken); + } else if (_index.match.call(void 0, returnToken)) { + tsParseTypeOrTypePredicateAnnotation(returnToken); + } +} + +function tsParseBindingListForSignature(isBlockScope) { + _lval.parseBindingList.call(void 0, _types.TokenType.parenR, isBlockScope); +} + +function tsParseTypeMemberSemicolon() { + if (!_index.eat.call(void 0, _types.TokenType.comma)) { + _util.semicolon.call(void 0, ); + } +} + +function tsParseSignatureMember() { + tsFillSignature(_types.TokenType.colon); + tsParseTypeMemberSemicolon(); +} + +function tsIsUnambiguouslyIndexSignature() { + const snapshot = _base.state.snapshot(); + _index.next.call(void 0, ); // Skip '{' + const isIndexSignature = _index.eat.call(void 0, _types.TokenType.name) && _index.match.call(void 0, _types.TokenType.colon); + _base.state.restoreFromSnapshot(snapshot); + return isIndexSignature; +} + +function tsTryParseIndexSignature() { + if (!(_index.match.call(void 0, _types.TokenType.bracketL) && tsIsUnambiguouslyIndexSignature())) { + return false; + } + + const oldIsType = _index.pushTypeContext.call(void 0, 0); + + _util.expect.call(void 0, _types.TokenType.bracketL); + _expression.parseIdentifier.call(void 0, ); + tsParseTypeAnnotation(); + _util.expect.call(void 0, _types.TokenType.bracketR); + + tsTryParseTypeAnnotation(); + tsParseTypeMemberSemicolon(); + + _index.popTypeContext.call(void 0, oldIsType); + return true; +} + +function tsParsePropertyOrMethodSignature(isReadonly) { + _index.eat.call(void 0, _types.TokenType.question); + + if (!isReadonly && (_index.match.call(void 0, _types.TokenType.parenL) || _index.match.call(void 0, _types.TokenType.lessThan))) { + tsFillSignature(_types.TokenType.colon); + tsParseTypeMemberSemicolon(); + } else { + tsTryParseTypeAnnotation(); + tsParseTypeMemberSemicolon(); + } +} + +function tsParseTypeMember() { + if (_index.match.call(void 0, _types.TokenType.parenL) || _index.match.call(void 0, _types.TokenType.lessThan)) { + // call signature + tsParseSignatureMember(); + return; + } + if (_index.match.call(void 0, _types.TokenType._new)) { + _index.next.call(void 0, ); + if (_index.match.call(void 0, _types.TokenType.parenL) || _index.match.call(void 0, _types.TokenType.lessThan)) { + // constructor signature + tsParseSignatureMember(); + } else { + tsParsePropertyOrMethodSignature(false); + } + return; + } + const readonly = !!tsParseModifier([_keywords.ContextualKeyword._readonly]); + + const found = tsTryParseIndexSignature(); + if (found) { + return; + } + if ( + (_util.isContextual.call(void 0, _keywords.ContextualKeyword._get) || _util.isContextual.call(void 0, _keywords.ContextualKeyword._set)) && + tsNextTokenCanFollowModifier() + ) { + // This is a getter/setter on a type. The tsNextTokenCanFollowModifier + // function already called next() for us, so continue parsing the name. + } + _expression.parsePropertyName.call(void 0, -1 /* Types don't need context IDs. */); + tsParsePropertyOrMethodSignature(readonly); +} + +function tsParseTypeLiteral() { + tsParseObjectTypeMembers(); +} + +function tsParseObjectTypeMembers() { + _util.expect.call(void 0, _types.TokenType.braceL); + while (!_index.eat.call(void 0, _types.TokenType.braceR) && !_base.state.error) { + tsParseTypeMember(); + } +} + +function tsLookaheadIsStartOfMappedType() { + const snapshot = _base.state.snapshot(); + const isStartOfMappedType = tsIsStartOfMappedType(); + _base.state.restoreFromSnapshot(snapshot); + return isStartOfMappedType; +} + +function tsIsStartOfMappedType() { + _index.next.call(void 0, ); + if (_index.eat.call(void 0, _types.TokenType.plus) || _index.eat.call(void 0, _types.TokenType.minus)) { + return _util.isContextual.call(void 0, _keywords.ContextualKeyword._readonly); + } + if (_util.isContextual.call(void 0, _keywords.ContextualKeyword._readonly)) { + _index.next.call(void 0, ); + } + if (!_index.match.call(void 0, _types.TokenType.bracketL)) { + return false; + } + _index.next.call(void 0, ); + if (!tsIsIdentifier()) { + return false; + } + _index.next.call(void 0, ); + return _index.match.call(void 0, _types.TokenType._in); +} + +function tsParseMappedTypeParameter() { + _expression.parseIdentifier.call(void 0, ); + _util.expect.call(void 0, _types.TokenType._in); + tsParseType(); +} + +function tsParseMappedType() { + _util.expect.call(void 0, _types.TokenType.braceL); + if (_index.match.call(void 0, _types.TokenType.plus) || _index.match.call(void 0, _types.TokenType.minus)) { + _index.next.call(void 0, ); + _util.expectContextual.call(void 0, _keywords.ContextualKeyword._readonly); + } else { + _util.eatContextual.call(void 0, _keywords.ContextualKeyword._readonly); + } + _util.expect.call(void 0, _types.TokenType.bracketL); + tsParseMappedTypeParameter(); + if (_util.eatContextual.call(void 0, _keywords.ContextualKeyword._as)) { + tsParseType(); + } + _util.expect.call(void 0, _types.TokenType.bracketR); + if (_index.match.call(void 0, _types.TokenType.plus) || _index.match.call(void 0, _types.TokenType.minus)) { + _index.next.call(void 0, ); + _util.expect.call(void 0, _types.TokenType.question); + } else { + _index.eat.call(void 0, _types.TokenType.question); + } + tsTryParseType(); + _util.semicolon.call(void 0, ); + _util.expect.call(void 0, _types.TokenType.braceR); +} + +function tsParseTupleType() { + _util.expect.call(void 0, _types.TokenType.bracketL); + while (!_index.eat.call(void 0, _types.TokenType.bracketR) && !_base.state.error) { + // Do not validate presence of either none or only labeled elements + tsParseTupleElementType(); + _index.eat.call(void 0, _types.TokenType.comma); + } +} + +function tsParseTupleElementType() { + // parses `...TsType[]` + if (_index.eat.call(void 0, _types.TokenType.ellipsis)) { + tsParseType(); + } else { + // parses `TsType?` + tsParseType(); + _index.eat.call(void 0, _types.TokenType.question); + } + + // The type we parsed above was actually a label + if (_index.eat.call(void 0, _types.TokenType.colon)) { + // Labeled tuple types must affix the label with `...` or `?`, so no need to handle those here + tsParseType(); + } +} + +function tsParseParenthesizedType() { + _util.expect.call(void 0, _types.TokenType.parenL); + tsParseType(); + _util.expect.call(void 0, _types.TokenType.parenR); +} + +function tsParseTemplateLiteralType() { + // Finish `, read quasi + _index.nextTemplateToken.call(void 0, ); + // Finish quasi, read ${ + _index.nextTemplateToken.call(void 0, ); + while (!_index.match.call(void 0, _types.TokenType.backQuote) && !_base.state.error) { + _util.expect.call(void 0, _types.TokenType.dollarBraceL); + tsParseType(); + // Finish }, read quasi + _index.nextTemplateToken.call(void 0, ); + // Finish quasi, read either ${ or ` + _index.nextTemplateToken.call(void 0, ); + } + _index.next.call(void 0, ); +} + +var FunctionType; (function (FunctionType) { + const TSFunctionType = 0; FunctionType[FunctionType["TSFunctionType"] = TSFunctionType] = "TSFunctionType"; + const TSConstructorType = TSFunctionType + 1; FunctionType[FunctionType["TSConstructorType"] = TSConstructorType] = "TSConstructorType"; + const TSAbstractConstructorType = TSConstructorType + 1; FunctionType[FunctionType["TSAbstractConstructorType"] = TSAbstractConstructorType] = "TSAbstractConstructorType"; +})(FunctionType || (FunctionType = {})); + +function tsParseFunctionOrConstructorType(type) { + if (type === FunctionType.TSAbstractConstructorType) { + _util.expectContextual.call(void 0, _keywords.ContextualKeyword._abstract); + } + if (type === FunctionType.TSConstructorType || type === FunctionType.TSAbstractConstructorType) { + _util.expect.call(void 0, _types.TokenType._new); + } + const oldInDisallowConditionalTypesContext = _base.state.inDisallowConditionalTypesContext; + _base.state.inDisallowConditionalTypesContext = false; + tsFillSignature(_types.TokenType.arrow); + _base.state.inDisallowConditionalTypesContext = oldInDisallowConditionalTypesContext; +} + +function tsParseNonArrayType() { + switch (_base.state.type) { + case _types.TokenType.name: + tsParseTypeReference(); + return; + case _types.TokenType._void: + case _types.TokenType._null: + _index.next.call(void 0, ); + return; + case _types.TokenType.string: + case _types.TokenType.num: + case _types.TokenType.bigint: + case _types.TokenType.decimal: + case _types.TokenType._true: + case _types.TokenType._false: + _expression.parseLiteral.call(void 0, ); + return; + case _types.TokenType.minus: + _index.next.call(void 0, ); + _expression.parseLiteral.call(void 0, ); + return; + case _types.TokenType._this: { + tsParseThisTypeNode(); + if (_util.isContextual.call(void 0, _keywords.ContextualKeyword._is) && !_util.hasPrecedingLineBreak.call(void 0, )) { + tsParseThisTypePredicate(); + } + return; + } + case _types.TokenType._typeof: + tsParseTypeQuery(); + return; + case _types.TokenType._import: + tsParseImportType(); + return; + case _types.TokenType.braceL: + if (tsLookaheadIsStartOfMappedType()) { + tsParseMappedType(); + } else { + tsParseTypeLiteral(); + } + return; + case _types.TokenType.bracketL: + tsParseTupleType(); + return; + case _types.TokenType.parenL: + tsParseParenthesizedType(); + return; + case _types.TokenType.backQuote: + tsParseTemplateLiteralType(); + return; + default: + if (_base.state.type & _types.TokenType.IS_KEYWORD) { + _index.next.call(void 0, ); + _base.state.tokens[_base.state.tokens.length - 1].type = _types.TokenType.name; + return; + } + break; + } + + _util.unexpected.call(void 0, ); +} + +function tsParseArrayTypeOrHigher() { + tsParseNonArrayType(); + while (!_util.hasPrecedingLineBreak.call(void 0, ) && _index.eat.call(void 0, _types.TokenType.bracketL)) { + if (!_index.eat.call(void 0, _types.TokenType.bracketR)) { + // If we hit ] immediately, this is an array type, otherwise it's an indexed access type. + tsParseType(); + _util.expect.call(void 0, _types.TokenType.bracketR); + } + } +} + +function tsParseInferType() { + _util.expectContextual.call(void 0, _keywords.ContextualKeyword._infer); + _expression.parseIdentifier.call(void 0, ); + if (_index.match.call(void 0, _types.TokenType._extends)) { + // Infer type constraints introduce an ambiguity about whether the "extends" + // is a constraint for this infer type or is another conditional type. + const snapshot = _base.state.snapshot(); + _util.expect.call(void 0, _types.TokenType._extends); + const oldInDisallowConditionalTypesContext = _base.state.inDisallowConditionalTypesContext; + _base.state.inDisallowConditionalTypesContext = true; + tsParseType(); + _base.state.inDisallowConditionalTypesContext = oldInDisallowConditionalTypesContext; + if (_base.state.error || (!_base.state.inDisallowConditionalTypesContext && _index.match.call(void 0, _types.TokenType.question))) { + _base.state.restoreFromSnapshot(snapshot); + } + } +} + +function tsParseTypeOperatorOrHigher() { + if ( + _util.isContextual.call(void 0, _keywords.ContextualKeyword._keyof) || + _util.isContextual.call(void 0, _keywords.ContextualKeyword._unique) || + _util.isContextual.call(void 0, _keywords.ContextualKeyword._readonly) + ) { + _index.next.call(void 0, ); + tsParseTypeOperatorOrHigher(); + } else if (_util.isContextual.call(void 0, _keywords.ContextualKeyword._infer)) { + tsParseInferType(); + } else { + const oldInDisallowConditionalTypesContext = _base.state.inDisallowConditionalTypesContext; + _base.state.inDisallowConditionalTypesContext = false; + tsParseArrayTypeOrHigher(); + _base.state.inDisallowConditionalTypesContext = oldInDisallowConditionalTypesContext; + } +} + +function tsParseIntersectionTypeOrHigher() { + _index.eat.call(void 0, _types.TokenType.bitwiseAND); + tsParseTypeOperatorOrHigher(); + if (_index.match.call(void 0, _types.TokenType.bitwiseAND)) { + while (_index.eat.call(void 0, _types.TokenType.bitwiseAND)) { + tsParseTypeOperatorOrHigher(); + } + } +} + +function tsParseUnionTypeOrHigher() { + _index.eat.call(void 0, _types.TokenType.bitwiseOR); + tsParseIntersectionTypeOrHigher(); + if (_index.match.call(void 0, _types.TokenType.bitwiseOR)) { + while (_index.eat.call(void 0, _types.TokenType.bitwiseOR)) { + tsParseIntersectionTypeOrHigher(); + } + } +} + +function tsIsStartOfFunctionType() { + if (_index.match.call(void 0, _types.TokenType.lessThan)) { + return true; + } + return _index.match.call(void 0, _types.TokenType.parenL) && tsLookaheadIsUnambiguouslyStartOfFunctionType(); +} + +function tsSkipParameterStart() { + if (_index.match.call(void 0, _types.TokenType.name) || _index.match.call(void 0, _types.TokenType._this)) { + _index.next.call(void 0, ); + return true; + } + // If this is a possible array/object destructure, walk to the matching bracket/brace. + // The next token after will tell us definitively whether this is a function param. + if (_index.match.call(void 0, _types.TokenType.braceL) || _index.match.call(void 0, _types.TokenType.bracketL)) { + let depth = 1; + _index.next.call(void 0, ); + while (depth > 0 && !_base.state.error) { + if (_index.match.call(void 0, _types.TokenType.braceL) || _index.match.call(void 0, _types.TokenType.bracketL)) { + depth++; + } else if (_index.match.call(void 0, _types.TokenType.braceR) || _index.match.call(void 0, _types.TokenType.bracketR)) { + depth--; + } + _index.next.call(void 0, ); + } + return true; + } + return false; +} + +function tsLookaheadIsUnambiguouslyStartOfFunctionType() { + const snapshot = _base.state.snapshot(); + const isUnambiguouslyStartOfFunctionType = tsIsUnambiguouslyStartOfFunctionType(); + _base.state.restoreFromSnapshot(snapshot); + return isUnambiguouslyStartOfFunctionType; +} + +function tsIsUnambiguouslyStartOfFunctionType() { + _index.next.call(void 0, ); + if (_index.match.call(void 0, _types.TokenType.parenR) || _index.match.call(void 0, _types.TokenType.ellipsis)) { + // ( ) + // ( ... + return true; + } + if (tsSkipParameterStart()) { + if (_index.match.call(void 0, _types.TokenType.colon) || _index.match.call(void 0, _types.TokenType.comma) || _index.match.call(void 0, _types.TokenType.question) || _index.match.call(void 0, _types.TokenType.eq)) { + // ( xxx : + // ( xxx , + // ( xxx ? + // ( xxx = + return true; + } + if (_index.match.call(void 0, _types.TokenType.parenR)) { + _index.next.call(void 0, ); + if (_index.match.call(void 0, _types.TokenType.arrow)) { + // ( xxx ) => + return true; + } + } + } + return false; +} + +function tsParseTypeOrTypePredicateAnnotation(returnToken) { + const oldIsType = _index.pushTypeContext.call(void 0, 0); + _util.expect.call(void 0, returnToken); + const finishedReturn = tsParseTypePredicateOrAssertsPrefix(); + if (!finishedReturn) { + tsParseType(); + } + _index.popTypeContext.call(void 0, oldIsType); +} + +function tsTryParseTypeOrTypePredicateAnnotation() { + if (_index.match.call(void 0, _types.TokenType.colon)) { + tsParseTypeOrTypePredicateAnnotation(_types.TokenType.colon); + } +} + + function tsTryParseTypeAnnotation() { + if (_index.match.call(void 0, _types.TokenType.colon)) { + tsParseTypeAnnotation(); + } +} exports.tsTryParseTypeAnnotation = tsTryParseTypeAnnotation; + +function tsTryParseType() { + if (_index.eat.call(void 0, _types.TokenType.colon)) { + tsParseType(); + } +} + +/** + * Detect a few special return syntax cases: `x is T`, `asserts x`, `asserts x is T`, + * `asserts this is T`. + * + * Returns true if we parsed the return type, false if there's still a type to be parsed. + */ +function tsParseTypePredicateOrAssertsPrefix() { + const snapshot = _base.state.snapshot(); + if (_util.isContextual.call(void 0, _keywords.ContextualKeyword._asserts)) { + // Normally this is `asserts x is T`, but at this point, it might be `asserts is T` (a user- + // defined type guard on the `asserts` variable) or just a type called `asserts`. + _index.next.call(void 0, ); + if (_util.eatContextual.call(void 0, _keywords.ContextualKeyword._is)) { + // If we see `asserts is`, then this must be of the form `asserts is T`, since + // `asserts is is T` isn't valid. + tsParseType(); + return true; + } else if (tsIsIdentifier() || _index.match.call(void 0, _types.TokenType._this)) { + _index.next.call(void 0, ); + if (_util.eatContextual.call(void 0, _keywords.ContextualKeyword._is)) { + // If we see `is`, then this is `asserts x is T`. Otherwise, it's `asserts x`. + tsParseType(); + } + return true; + } else { + // Regular type, so bail out and start type parsing from scratch. + _base.state.restoreFromSnapshot(snapshot); + return false; + } + } else if (tsIsIdentifier() || _index.match.call(void 0, _types.TokenType._this)) { + // This is a regular identifier, which may or may not have "is" after it. + _index.next.call(void 0, ); + if (_util.isContextual.call(void 0, _keywords.ContextualKeyword._is) && !_util.hasPrecedingLineBreak.call(void 0, )) { + _index.next.call(void 0, ); + tsParseType(); + return true; + } else { + // Regular type, so bail out and start type parsing from scratch. + _base.state.restoreFromSnapshot(snapshot); + return false; + } + } + return false; +} + + function tsParseTypeAnnotation() { + const oldIsType = _index.pushTypeContext.call(void 0, 0); + _util.expect.call(void 0, _types.TokenType.colon); + tsParseType(); + _index.popTypeContext.call(void 0, oldIsType); +} exports.tsParseTypeAnnotation = tsParseTypeAnnotation; + + function tsParseType() { + tsParseNonConditionalType(); + if (_base.state.inDisallowConditionalTypesContext || _util.hasPrecedingLineBreak.call(void 0, ) || !_index.eat.call(void 0, _types.TokenType._extends)) { + return; + } + // extends type + const oldInDisallowConditionalTypesContext = _base.state.inDisallowConditionalTypesContext; + _base.state.inDisallowConditionalTypesContext = true; + tsParseNonConditionalType(); + _base.state.inDisallowConditionalTypesContext = oldInDisallowConditionalTypesContext; + + _util.expect.call(void 0, _types.TokenType.question); + // true type + tsParseType(); + _util.expect.call(void 0, _types.TokenType.colon); + // false type + tsParseType(); +} exports.tsParseType = tsParseType; + +function isAbstractConstructorSignature() { + return _util.isContextual.call(void 0, _keywords.ContextualKeyword._abstract) && _index.lookaheadType.call(void 0, ) === _types.TokenType._new; +} + + function tsParseNonConditionalType() { + if (tsIsStartOfFunctionType()) { + tsParseFunctionOrConstructorType(FunctionType.TSFunctionType); + return; + } + if (_index.match.call(void 0, _types.TokenType._new)) { + // As in `new () => Date` + tsParseFunctionOrConstructorType(FunctionType.TSConstructorType); + return; + } else if (isAbstractConstructorSignature()) { + // As in `abstract new () => Date` + tsParseFunctionOrConstructorType(FunctionType.TSAbstractConstructorType); + return; + } + tsParseUnionTypeOrHigher(); +} exports.tsParseNonConditionalType = tsParseNonConditionalType; + + function tsParseTypeAssertion() { + const oldIsType = _index.pushTypeContext.call(void 0, 1); + tsParseType(); + _util.expect.call(void 0, _types.TokenType.greaterThan); + _index.popTypeContext.call(void 0, oldIsType); + _expression.parseMaybeUnary.call(void 0, ); +} exports.tsParseTypeAssertion = tsParseTypeAssertion; + + function tsTryParseJSXTypeArgument() { + if (_index.eat.call(void 0, _types.TokenType.jsxTagStart)) { + _base.state.tokens[_base.state.tokens.length - 1].type = _types.TokenType.typeParameterStart; + const oldIsType = _index.pushTypeContext.call(void 0, 1); + while (!_index.match.call(void 0, _types.TokenType.greaterThan) && !_base.state.error) { + tsParseType(); + _index.eat.call(void 0, _types.TokenType.comma); + } + // Process >, but the one after needs to be parsed JSX-style. + _jsx.nextJSXTagToken.call(void 0, ); + _index.popTypeContext.call(void 0, oldIsType); + } +} exports.tsTryParseJSXTypeArgument = tsTryParseJSXTypeArgument; + +function tsParseHeritageClause() { + while (!_index.match.call(void 0, _types.TokenType.braceL) && !_base.state.error) { + tsParseExpressionWithTypeArguments(); + _index.eat.call(void 0, _types.TokenType.comma); + } +} + +function tsParseExpressionWithTypeArguments() { + // Note: TS uses parseLeftHandSideExpressionOrHigher, + // then has grammar errors later if it's not an EntityName. + tsParseEntityName(); + if (_index.match.call(void 0, _types.TokenType.lessThan)) { + tsParseTypeArguments(); + } +} + +function tsParseInterfaceDeclaration() { + _lval.parseBindingIdentifier.call(void 0, false); + tsTryParseTypeParameters(); + if (_index.eat.call(void 0, _types.TokenType._extends)) { + tsParseHeritageClause(); + } + tsParseObjectTypeMembers(); +} + +function tsParseTypeAliasDeclaration() { + _lval.parseBindingIdentifier.call(void 0, false); + tsTryParseTypeParameters(); + _util.expect.call(void 0, _types.TokenType.eq); + tsParseType(); + _util.semicolon.call(void 0, ); +} + +function tsParseEnumMember() { + // Computed property names are grammar errors in an enum, so accept just string literal or identifier. + if (_index.match.call(void 0, _types.TokenType.string)) { + _expression.parseLiteral.call(void 0, ); + } else { + _expression.parseIdentifier.call(void 0, ); + } + if (_index.eat.call(void 0, _types.TokenType.eq)) { + const eqIndex = _base.state.tokens.length - 1; + _expression.parseMaybeAssign.call(void 0, ); + _base.state.tokens[eqIndex].rhsEndIndex = _base.state.tokens.length; + } +} + +function tsParseEnumDeclaration() { + _lval.parseBindingIdentifier.call(void 0, false); + _util.expect.call(void 0, _types.TokenType.braceL); + while (!_index.eat.call(void 0, _types.TokenType.braceR) && !_base.state.error) { + tsParseEnumMember(); + _index.eat.call(void 0, _types.TokenType.comma); + } +} + +function tsParseModuleBlock() { + _util.expect.call(void 0, _types.TokenType.braceL); + _statement.parseBlockBody.call(void 0, /* end */ _types.TokenType.braceR); +} + +function tsParseModuleOrNamespaceDeclaration() { + _lval.parseBindingIdentifier.call(void 0, false); + if (_index.eat.call(void 0, _types.TokenType.dot)) { + tsParseModuleOrNamespaceDeclaration(); + } else { + tsParseModuleBlock(); + } +} + +function tsParseAmbientExternalModuleDeclaration() { + if (_util.isContextual.call(void 0, _keywords.ContextualKeyword._global)) { + _expression.parseIdentifier.call(void 0, ); + } else if (_index.match.call(void 0, _types.TokenType.string)) { + _expression.parseExprAtom.call(void 0, ); + } else { + _util.unexpected.call(void 0, ); + } + + if (_index.match.call(void 0, _types.TokenType.braceL)) { + tsParseModuleBlock(); + } else { + _util.semicolon.call(void 0, ); + } +} + + function tsParseImportEqualsDeclaration() { + _lval.parseImportedIdentifier.call(void 0, ); + _util.expect.call(void 0, _types.TokenType.eq); + tsParseModuleReference(); + _util.semicolon.call(void 0, ); +} exports.tsParseImportEqualsDeclaration = tsParseImportEqualsDeclaration; + +function tsIsExternalModuleReference() { + return _util.isContextual.call(void 0, _keywords.ContextualKeyword._require) && _index.lookaheadType.call(void 0, ) === _types.TokenType.parenL; +} + +function tsParseModuleReference() { + if (tsIsExternalModuleReference()) { + tsParseExternalModuleReference(); + } else { + tsParseEntityName(); + } +} + +function tsParseExternalModuleReference() { + _util.expectContextual.call(void 0, _keywords.ContextualKeyword._require); + _util.expect.call(void 0, _types.TokenType.parenL); + if (!_index.match.call(void 0, _types.TokenType.string)) { + _util.unexpected.call(void 0, ); + } + _expression.parseLiteral.call(void 0, ); + _util.expect.call(void 0, _types.TokenType.parenR); +} + +// Utilities + +// Returns true if a statement matched. +function tsTryParseDeclare() { + if (_util.isLineTerminator.call(void 0, )) { + return false; + } + switch (_base.state.type) { + case _types.TokenType._function: { + const oldIsType = _index.pushTypeContext.call(void 0, 1); + _index.next.call(void 0, ); + // We don't need to precisely get the function start here, since it's only used to mark + // the function as a type if it's bodiless, and it's already a type here. + const functionStart = _base.state.start; + _statement.parseFunction.call(void 0, functionStart, /* isStatement */ true); + _index.popTypeContext.call(void 0, oldIsType); + return true; + } + case _types.TokenType._class: { + const oldIsType = _index.pushTypeContext.call(void 0, 1); + _statement.parseClass.call(void 0, /* isStatement */ true, /* optionalId */ false); + _index.popTypeContext.call(void 0, oldIsType); + return true; + } + case _types.TokenType._const: { + if (_index.match.call(void 0, _types.TokenType._const) && _util.isLookaheadContextual.call(void 0, _keywords.ContextualKeyword._enum)) { + const oldIsType = _index.pushTypeContext.call(void 0, 1); + // `const enum = 0;` not allowed because "enum" is a strict mode reserved word. + _util.expect.call(void 0, _types.TokenType._const); + _util.expectContextual.call(void 0, _keywords.ContextualKeyword._enum); + _base.state.tokens[_base.state.tokens.length - 1].type = _types.TokenType._enum; + tsParseEnumDeclaration(); + _index.popTypeContext.call(void 0, oldIsType); + return true; + } + } + // falls through + case _types.TokenType._var: + case _types.TokenType._let: { + const oldIsType = _index.pushTypeContext.call(void 0, 1); + _statement.parseVarStatement.call(void 0, _base.state.type !== _types.TokenType._var); + _index.popTypeContext.call(void 0, oldIsType); + return true; + } + case _types.TokenType.name: { + const oldIsType = _index.pushTypeContext.call(void 0, 1); + const contextualKeyword = _base.state.contextualKeyword; + let matched = false; + if (contextualKeyword === _keywords.ContextualKeyword._global) { + tsParseAmbientExternalModuleDeclaration(); + matched = true; + } else { + matched = tsParseDeclaration(contextualKeyword, /* isBeforeToken */ true); + } + _index.popTypeContext.call(void 0, oldIsType); + return matched; + } + default: + return false; + } +} + +// Note: this won't be called unless the keyword is allowed in `shouldParseExportDeclaration`. +// Returns true if it matched a declaration. +function tsTryParseExportDeclaration() { + return tsParseDeclaration(_base.state.contextualKeyword, /* isBeforeToken */ true); +} + +// Returns true if it matched a statement. +function tsParseExpressionStatement(contextualKeyword) { + switch (contextualKeyword) { + case _keywords.ContextualKeyword._declare: { + const declareTokenIndex = _base.state.tokens.length - 1; + const matched = tsTryParseDeclare(); + if (matched) { + _base.state.tokens[declareTokenIndex].type = _types.TokenType._declare; + return true; + } + break; + } + case _keywords.ContextualKeyword._global: + // `global { }` (with no `declare`) may appear inside an ambient module declaration. + // Would like to use tsParseAmbientExternalModuleDeclaration here, but already ran past "global". + if (_index.match.call(void 0, _types.TokenType.braceL)) { + tsParseModuleBlock(); + return true; + } + break; + + default: + return tsParseDeclaration(contextualKeyword, /* isBeforeToken */ false); + } + return false; +} + +/** + * Common code for parsing a declaration. + * + * isBeforeToken indicates that the current parser state is at the contextual + * keyword (and that it is not yet emitted) rather than reading the token after + * it. When isBeforeToken is true, we may be preceded by an `export` token and + * should include that token in a type context we create, e.g. to handle + * `export interface` or `export type`. (This is a bit of a hack and should be + * cleaned up at some point.) + * + * Returns true if it matched a declaration. + */ +function tsParseDeclaration(contextualKeyword, isBeforeToken) { + switch (contextualKeyword) { + case _keywords.ContextualKeyword._abstract: + if (tsCheckLineTerminator(isBeforeToken) && _index.match.call(void 0, _types.TokenType._class)) { + _base.state.tokens[_base.state.tokens.length - 1].type = _types.TokenType._abstract; + _statement.parseClass.call(void 0, /* isStatement */ true, /* optionalId */ false); + return true; + } + break; + + case _keywords.ContextualKeyword._enum: + if (tsCheckLineTerminator(isBeforeToken) && _index.match.call(void 0, _types.TokenType.name)) { + _base.state.tokens[_base.state.tokens.length - 1].type = _types.TokenType._enum; + tsParseEnumDeclaration(); + return true; + } + break; + + case _keywords.ContextualKeyword._interface: + if (tsCheckLineTerminator(isBeforeToken) && _index.match.call(void 0, _types.TokenType.name)) { + // `next` is true in "export" and "declare" contexts, so we want to remove that token + // as well. + const oldIsType = _index.pushTypeContext.call(void 0, isBeforeToken ? 2 : 1); + tsParseInterfaceDeclaration(); + _index.popTypeContext.call(void 0, oldIsType); + return true; + } + break; + + case _keywords.ContextualKeyword._module: + if (tsCheckLineTerminator(isBeforeToken)) { + if (_index.match.call(void 0, _types.TokenType.string)) { + const oldIsType = _index.pushTypeContext.call(void 0, isBeforeToken ? 2 : 1); + tsParseAmbientExternalModuleDeclaration(); + _index.popTypeContext.call(void 0, oldIsType); + return true; + } else if (_index.match.call(void 0, _types.TokenType.name)) { + const oldIsType = _index.pushTypeContext.call(void 0, isBeforeToken ? 2 : 1); + tsParseModuleOrNamespaceDeclaration(); + _index.popTypeContext.call(void 0, oldIsType); + return true; + } + } + break; + + case _keywords.ContextualKeyword._namespace: + if (tsCheckLineTerminator(isBeforeToken) && _index.match.call(void 0, _types.TokenType.name)) { + const oldIsType = _index.pushTypeContext.call(void 0, isBeforeToken ? 2 : 1); + tsParseModuleOrNamespaceDeclaration(); + _index.popTypeContext.call(void 0, oldIsType); + return true; + } + break; + + case _keywords.ContextualKeyword._type: + if (tsCheckLineTerminator(isBeforeToken) && _index.match.call(void 0, _types.TokenType.name)) { + const oldIsType = _index.pushTypeContext.call(void 0, isBeforeToken ? 2 : 1); + tsParseTypeAliasDeclaration(); + _index.popTypeContext.call(void 0, oldIsType); + return true; + } + break; + + default: + break; + } + return false; +} + +function tsCheckLineTerminator(isBeforeToken) { + if (isBeforeToken) { + // Babel checks hasFollowingLineBreak here and returns false, but this + // doesn't actually come up, e.g. `export interface` can never be on its own + // line in valid code. + _index.next.call(void 0, ); + return true; + } else { + return !_util.isLineTerminator.call(void 0, ); + } +} + +// Returns true if there was a generic async arrow function. +function tsTryParseGenericAsyncArrowFunction() { + const snapshot = _base.state.snapshot(); + + tsParseTypeParameters(); + _statement.parseFunctionParams.call(void 0, ); + tsTryParseTypeOrTypePredicateAnnotation(); + _util.expect.call(void 0, _types.TokenType.arrow); + + if (_base.state.error) { + _base.state.restoreFromSnapshot(snapshot); + return false; + } + + _expression.parseFunctionBody.call(void 0, true); + return true; +} + +/** + * If necessary, hack the tokenizer state so that this bitshift was actually a + * less-than token, then keep parsing. This should only be used in situations + * where we restore from snapshot on error (which reverts this change) or + * where bitshift would be illegal anyway (e.g. in a class "extends" clause). + * + * This hack is useful to handle situations like foo<<T>() => void>() where + * there can legitimately be two open-angle-brackets in a row in TS. + */ +function tsParseTypeArgumentsWithPossibleBitshift() { + if (_base.state.type === _types.TokenType.bitShiftL) { + _base.state.pos -= 1; + _index.finishToken.call(void 0, _types.TokenType.lessThan); + } + tsParseTypeArguments(); +} + +function tsParseTypeArguments() { + const oldIsType = _index.pushTypeContext.call(void 0, 0); + _util.expect.call(void 0, _types.TokenType.lessThan); + while (!_index.match.call(void 0, _types.TokenType.greaterThan) && !_base.state.error) { + tsParseType(); + _index.eat.call(void 0, _types.TokenType.comma); + } + if (!oldIsType) { + // If the type arguments are present in an expression context, e.g. + // f<number>(), then the > sign should be tokenized as a non-type token. + // In particular, f(a < b, c >= d) should parse the >= as a single token, + // resulting in a syntax error and fallback to the non-type-args + // interpretation. In the success case, even though the > is tokenized as a + // non-type token, it still must be marked as a type token so that it is + // erased. + _index.popTypeContext.call(void 0, oldIsType); + _index.rescan_gt.call(void 0, ); + _util.expect.call(void 0, _types.TokenType.greaterThan); + _base.state.tokens[_base.state.tokens.length - 1].isType = true; + } else { + _util.expect.call(void 0, _types.TokenType.greaterThan); + _index.popTypeContext.call(void 0, oldIsType); + } +} + + function tsIsDeclarationStart() { + if (_index.match.call(void 0, _types.TokenType.name)) { + switch (_base.state.contextualKeyword) { + case _keywords.ContextualKeyword._abstract: + case _keywords.ContextualKeyword._declare: + case _keywords.ContextualKeyword._enum: + case _keywords.ContextualKeyword._interface: + case _keywords.ContextualKeyword._module: + case _keywords.ContextualKeyword._namespace: + case _keywords.ContextualKeyword._type: + return true; + default: + break; + } + } + + return false; +} exports.tsIsDeclarationStart = tsIsDeclarationStart; + +// ====================================================== +// OVERRIDES +// ====================================================== + + function tsParseFunctionBodyAndFinish(functionStart, funcContextId) { + // For arrow functions, `parseArrow` handles the return type itself. + if (_index.match.call(void 0, _types.TokenType.colon)) { + tsParseTypeOrTypePredicateAnnotation(_types.TokenType.colon); + } + + // The original code checked the node type to make sure this function type allows a missing + // body, but we skip that to avoid sending around the node type. We instead just use the + // allowExpressionBody boolean to make sure it's not an arrow function. + if (!_index.match.call(void 0, _types.TokenType.braceL) && _util.isLineTerminator.call(void 0, )) { + // Retroactively mark the function declaration as a type. + let i = _base.state.tokens.length - 1; + while ( + i >= 0 && + (_base.state.tokens[i].start >= functionStart || + _base.state.tokens[i].type === _types.TokenType._default || + _base.state.tokens[i].type === _types.TokenType._export) + ) { + _base.state.tokens[i].isType = true; + i--; + } + return; + } + + _expression.parseFunctionBody.call(void 0, false, funcContextId); +} exports.tsParseFunctionBodyAndFinish = tsParseFunctionBodyAndFinish; + + function tsParseSubscript( + startTokenIndex, + noCalls, + stopState, +) { + if (!_util.hasPrecedingLineBreak.call(void 0, ) && _index.eat.call(void 0, _types.TokenType.bang)) { + _base.state.tokens[_base.state.tokens.length - 1].type = _types.TokenType.nonNullAssertion; + return; + } + + if (_index.match.call(void 0, _types.TokenType.lessThan) || _index.match.call(void 0, _types.TokenType.bitShiftL)) { + // There are number of things we are going to "maybe" parse, like type arguments on + // tagged template expressions. If any of them fail, walk it back and continue. + const snapshot = _base.state.snapshot(); + + if (!noCalls && _expression.atPossibleAsync.call(void 0, )) { + // Almost certainly this is a generic async function `async <T>() => ... + // But it might be a call with a type argument `async<T>();` + const asyncArrowFn = tsTryParseGenericAsyncArrowFunction(); + if (asyncArrowFn) { + return; + } + } + tsParseTypeArgumentsWithPossibleBitshift(); + if (!noCalls && _index.eat.call(void 0, _types.TokenType.parenL)) { + // With f<T>(), the subscriptStartIndex marker is on the ( token. + _base.state.tokens[_base.state.tokens.length - 1].subscriptStartIndex = startTokenIndex; + _expression.parseCallExpressionArguments.call(void 0, ); + } else if (_index.match.call(void 0, _types.TokenType.backQuote)) { + // Tagged template with a type argument. + _expression.parseTemplate.call(void 0, ); + } else if ( + // The remaining possible case is an instantiation expression, e.g. + // Array<number> . Check for a few cases that would disqualify it and + // cause us to bail out. + // a<b>>c is not (a<b>)>c, but a<(b>>c) + _base.state.type === _types.TokenType.greaterThan || + // a<b>c is (a<b)>c + (_base.state.type !== _types.TokenType.parenL && + Boolean(_base.state.type & _types.TokenType.IS_EXPRESSION_START) && + !_util.hasPrecedingLineBreak.call(void 0, )) + ) { + // Bail out. We have something like a<b>c, which is not an expression with + // type arguments but an (a < b) > c comparison. + _util.unexpected.call(void 0, ); + } + + if (_base.state.error) { + _base.state.restoreFromSnapshot(snapshot); + } else { + return; + } + } else if (!noCalls && _index.match.call(void 0, _types.TokenType.questionDot) && _index.lookaheadType.call(void 0, ) === _types.TokenType.lessThan) { + // If we see f?.<, then this must be an optional call with a type argument. + _index.next.call(void 0, ); + _base.state.tokens[startTokenIndex].isOptionalChainStart = true; + // With f?.<T>(), the subscriptStartIndex marker is on the ?. token. + _base.state.tokens[_base.state.tokens.length - 1].subscriptStartIndex = startTokenIndex; + + tsParseTypeArguments(); + _util.expect.call(void 0, _types.TokenType.parenL); + _expression.parseCallExpressionArguments.call(void 0, ); + } + _expression.baseParseSubscript.call(void 0, startTokenIndex, noCalls, stopState); +} exports.tsParseSubscript = tsParseSubscript; + + function tsTryParseExport() { + if (_index.eat.call(void 0, _types.TokenType._import)) { + // One of these cases: + // export import A = B; + // export import type A = require("A"); + if (_util.isContextual.call(void 0, _keywords.ContextualKeyword._type) && _index.lookaheadType.call(void 0, ) !== _types.TokenType.eq) { + // Eat a `type` token, unless it's actually an identifier name. + _util.expectContextual.call(void 0, _keywords.ContextualKeyword._type); + } + tsParseImportEqualsDeclaration(); + return true; + } else if (_index.eat.call(void 0, _types.TokenType.eq)) { + // `export = x;` + _expression.parseExpression.call(void 0, ); + _util.semicolon.call(void 0, ); + return true; + } else if (_util.eatContextual.call(void 0, _keywords.ContextualKeyword._as)) { + // `export as namespace A;` + // See `parseNamespaceExportDeclaration` in TypeScript's own parser + _util.expectContextual.call(void 0, _keywords.ContextualKeyword._namespace); + _expression.parseIdentifier.call(void 0, ); + _util.semicolon.call(void 0, ); + return true; + } else { + if (_util.isContextual.call(void 0, _keywords.ContextualKeyword._type)) { + const nextType = _index.lookaheadType.call(void 0, ); + // export type {foo} from 'a'; + // export type * from 'a';' + // export type * as ns from 'a';' + if (nextType === _types.TokenType.braceL || nextType === _types.TokenType.star) { + _index.next.call(void 0, ); + } + } + return false; + } +} exports.tsTryParseExport = tsTryParseExport; + +/** + * Parse a TS import specifier, which may be prefixed with "type" and may be of + * the form `foo as bar`. + * + * The number of identifier-like tokens we see happens to be enough to uniquely + * identify the form, so simply count the number of identifiers rather than + * matching the words `type` or `as`. This is particularly important because + * `type` and `as` could each actually be plain identifiers rather than + * keywords. + */ + function tsParseImportSpecifier() { + _expression.parseIdentifier.call(void 0, ); + if (_index.match.call(void 0, _types.TokenType.comma) || _index.match.call(void 0, _types.TokenType.braceR)) { + // import {foo} + _base.state.tokens[_base.state.tokens.length - 1].identifierRole = _index.IdentifierRole.ImportDeclaration; + return; + } + _expression.parseIdentifier.call(void 0, ); + if (_index.match.call(void 0, _types.TokenType.comma) || _index.match.call(void 0, _types.TokenType.braceR)) { + // import {type foo} + _base.state.tokens[_base.state.tokens.length - 1].identifierRole = _index.IdentifierRole.ImportDeclaration; + _base.state.tokens[_base.state.tokens.length - 2].isType = true; + _base.state.tokens[_base.state.tokens.length - 1].isType = true; + return; + } + _expression.parseIdentifier.call(void 0, ); + if (_index.match.call(void 0, _types.TokenType.comma) || _index.match.call(void 0, _types.TokenType.braceR)) { + // import {foo as bar} + _base.state.tokens[_base.state.tokens.length - 3].identifierRole = _index.IdentifierRole.ImportAccess; + _base.state.tokens[_base.state.tokens.length - 1].identifierRole = _index.IdentifierRole.ImportDeclaration; + return; + } + _expression.parseIdentifier.call(void 0, ); + // import {type foo as bar} + _base.state.tokens[_base.state.tokens.length - 3].identifierRole = _index.IdentifierRole.ImportAccess; + _base.state.tokens[_base.state.tokens.length - 1].identifierRole = _index.IdentifierRole.ImportDeclaration; + _base.state.tokens[_base.state.tokens.length - 4].isType = true; + _base.state.tokens[_base.state.tokens.length - 3].isType = true; + _base.state.tokens[_base.state.tokens.length - 2].isType = true; + _base.state.tokens[_base.state.tokens.length - 1].isType = true; +} exports.tsParseImportSpecifier = tsParseImportSpecifier; + +/** + * Just like named import specifiers, export specifiers can have from 1 to 4 + * tokens, inclusive, and the number of tokens determines the role of each token. + */ + function tsParseExportSpecifier() { + _expression.parseIdentifier.call(void 0, ); + if (_index.match.call(void 0, _types.TokenType.comma) || _index.match.call(void 0, _types.TokenType.braceR)) { + // export {foo} + _base.state.tokens[_base.state.tokens.length - 1].identifierRole = _index.IdentifierRole.ExportAccess; + return; + } + _expression.parseIdentifier.call(void 0, ); + if (_index.match.call(void 0, _types.TokenType.comma) || _index.match.call(void 0, _types.TokenType.braceR)) { + // export {type foo} + _base.state.tokens[_base.state.tokens.length - 1].identifierRole = _index.IdentifierRole.ExportAccess; + _base.state.tokens[_base.state.tokens.length - 2].isType = true; + _base.state.tokens[_base.state.tokens.length - 1].isType = true; + return; + } + _expression.parseIdentifier.call(void 0, ); + if (_index.match.call(void 0, _types.TokenType.comma) || _index.match.call(void 0, _types.TokenType.braceR)) { + // export {foo as bar} + _base.state.tokens[_base.state.tokens.length - 3].identifierRole = _index.IdentifierRole.ExportAccess; + return; + } + _expression.parseIdentifier.call(void 0, ); + // export {type foo as bar} + _base.state.tokens[_base.state.tokens.length - 3].identifierRole = _index.IdentifierRole.ExportAccess; + _base.state.tokens[_base.state.tokens.length - 4].isType = true; + _base.state.tokens[_base.state.tokens.length - 3].isType = true; + _base.state.tokens[_base.state.tokens.length - 2].isType = true; + _base.state.tokens[_base.state.tokens.length - 1].isType = true; +} exports.tsParseExportSpecifier = tsParseExportSpecifier; + + function tsTryParseExportDefaultExpression() { + if (_util.isContextual.call(void 0, _keywords.ContextualKeyword._abstract) && _index.lookaheadType.call(void 0, ) === _types.TokenType._class) { + _base.state.type = _types.TokenType._abstract; + _index.next.call(void 0, ); // Skip "abstract" + _statement.parseClass.call(void 0, true, true); + return true; + } + if (_util.isContextual.call(void 0, _keywords.ContextualKeyword._interface)) { + // Make sure "export default" are considered type tokens so the whole thing is removed. + const oldIsType = _index.pushTypeContext.call(void 0, 2); + tsParseDeclaration(_keywords.ContextualKeyword._interface, true); + _index.popTypeContext.call(void 0, oldIsType); + return true; + } + return false; +} exports.tsTryParseExportDefaultExpression = tsTryParseExportDefaultExpression; + + function tsTryParseStatementContent() { + if (_base.state.type === _types.TokenType._const) { + const ahead = _index.lookaheadTypeAndKeyword.call(void 0, ); + if (ahead.type === _types.TokenType.name && ahead.contextualKeyword === _keywords.ContextualKeyword._enum) { + _util.expect.call(void 0, _types.TokenType._const); + _util.expectContextual.call(void 0, _keywords.ContextualKeyword._enum); + _base.state.tokens[_base.state.tokens.length - 1].type = _types.TokenType._enum; + tsParseEnumDeclaration(); + return true; + } + } + return false; +} exports.tsTryParseStatementContent = tsTryParseStatementContent; + + function tsTryParseClassMemberWithIsStatic(isStatic) { + const memberStartIndexAfterStatic = _base.state.tokens.length; + tsParseModifiers([ + _keywords.ContextualKeyword._abstract, + _keywords.ContextualKeyword._readonly, + _keywords.ContextualKeyword._declare, + _keywords.ContextualKeyword._static, + _keywords.ContextualKeyword._override, + ]); + + const modifiersEndIndex = _base.state.tokens.length; + const found = tsTryParseIndexSignature(); + if (found) { + // Index signatures are type declarations, so set the modifier tokens as + // type tokens. Most tokens could be assumed to be type tokens, but `static` + // is ambiguous unless we set it explicitly here. + const memberStartIndex = isStatic + ? memberStartIndexAfterStatic - 1 + : memberStartIndexAfterStatic; + for (let i = memberStartIndex; i < modifiersEndIndex; i++) { + _base.state.tokens[i].isType = true; + } + return true; + } + return false; +} exports.tsTryParseClassMemberWithIsStatic = tsTryParseClassMemberWithIsStatic; + +// Note: The reason we do this in `parseIdentifierStatement` and not `parseStatement` +// is that e.g. `type()` is valid JS, so we must try parsing that first. +// If it's really a type, we will parse `type` as the statement, and can correct it here +// by parsing the rest. + function tsParseIdentifierStatement(contextualKeyword) { + const matched = tsParseExpressionStatement(contextualKeyword); + if (!matched) { + _util.semicolon.call(void 0, ); + } +} exports.tsParseIdentifierStatement = tsParseIdentifierStatement; + + function tsParseExportDeclaration() { + // "export declare" is equivalent to just "export". + const isDeclare = _util.eatContextual.call(void 0, _keywords.ContextualKeyword._declare); + if (isDeclare) { + _base.state.tokens[_base.state.tokens.length - 1].type = _types.TokenType._declare; + } + + let matchedDeclaration = false; + if (_index.match.call(void 0, _types.TokenType.name)) { + if (isDeclare) { + const oldIsType = _index.pushTypeContext.call(void 0, 2); + matchedDeclaration = tsTryParseExportDeclaration(); + _index.popTypeContext.call(void 0, oldIsType); + } else { + matchedDeclaration = tsTryParseExportDeclaration(); + } + } + if (!matchedDeclaration) { + if (isDeclare) { + const oldIsType = _index.pushTypeContext.call(void 0, 2); + _statement.parseStatement.call(void 0, true); + _index.popTypeContext.call(void 0, oldIsType); + } else { + _statement.parseStatement.call(void 0, true); + } + } +} exports.tsParseExportDeclaration = tsParseExportDeclaration; + + function tsAfterParseClassSuper(hasSuper) { + if (hasSuper && (_index.match.call(void 0, _types.TokenType.lessThan) || _index.match.call(void 0, _types.TokenType.bitShiftL))) { + tsParseTypeArgumentsWithPossibleBitshift(); + } + if (_util.eatContextual.call(void 0, _keywords.ContextualKeyword._implements)) { + _base.state.tokens[_base.state.tokens.length - 1].type = _types.TokenType._implements; + const oldIsType = _index.pushTypeContext.call(void 0, 1); + tsParseHeritageClause(); + _index.popTypeContext.call(void 0, oldIsType); + } +} exports.tsAfterParseClassSuper = tsAfterParseClassSuper; + + function tsStartParseObjPropValue() { + tsTryParseTypeParameters(); +} exports.tsStartParseObjPropValue = tsStartParseObjPropValue; + + function tsStartParseFunctionParams() { + tsTryParseTypeParameters(); +} exports.tsStartParseFunctionParams = tsStartParseFunctionParams; + +// `let x: number;` + function tsAfterParseVarHead() { + const oldIsType = _index.pushTypeContext.call(void 0, 0); + if (!_util.hasPrecedingLineBreak.call(void 0, )) { + _index.eat.call(void 0, _types.TokenType.bang); + } + tsTryParseTypeAnnotation(); + _index.popTypeContext.call(void 0, oldIsType); +} exports.tsAfterParseVarHead = tsAfterParseVarHead; + +// parse the return type of an async arrow function - let foo = (async (): number => {}); + function tsStartParseAsyncArrowFromCallExpression() { + if (_index.match.call(void 0, _types.TokenType.colon)) { + tsParseTypeAnnotation(); + } +} exports.tsStartParseAsyncArrowFromCallExpression = tsStartParseAsyncArrowFromCallExpression; + +// Returns true if the expression was an arrow function. + function tsParseMaybeAssign(noIn, isWithinParens) { + // Note: When the JSX plugin is on, type assertions (`<T> x`) aren't valid syntax. + if (_base.isJSXEnabled) { + return tsParseMaybeAssignWithJSX(noIn, isWithinParens); + } else { + return tsParseMaybeAssignWithoutJSX(noIn, isWithinParens); + } +} exports.tsParseMaybeAssign = tsParseMaybeAssign; + + function tsParseMaybeAssignWithJSX(noIn, isWithinParens) { + if (!_index.match.call(void 0, _types.TokenType.lessThan)) { + return _expression.baseParseMaybeAssign.call(void 0, noIn, isWithinParens); + } + + // Prefer to parse JSX if possible. But may be an arrow fn. + const snapshot = _base.state.snapshot(); + let wasArrow = _expression.baseParseMaybeAssign.call(void 0, noIn, isWithinParens); + if (_base.state.error) { + _base.state.restoreFromSnapshot(snapshot); + } else { + return wasArrow; + } + + // Otherwise, try as type-parameterized arrow function. + _base.state.type = _types.TokenType.typeParameterStart; + // This is similar to TypeScript's `tryParseParenthesizedArrowFunctionExpression`. + tsParseTypeParameters(); + wasArrow = _expression.baseParseMaybeAssign.call(void 0, noIn, isWithinParens); + if (!wasArrow) { + _util.unexpected.call(void 0, ); + } + + return wasArrow; +} exports.tsParseMaybeAssignWithJSX = tsParseMaybeAssignWithJSX; + + function tsParseMaybeAssignWithoutJSX(noIn, isWithinParens) { + if (!_index.match.call(void 0, _types.TokenType.lessThan)) { + return _expression.baseParseMaybeAssign.call(void 0, noIn, isWithinParens); + } + + const snapshot = _base.state.snapshot(); + // This is similar to TypeScript's `tryParseParenthesizedArrowFunctionExpression`. + tsParseTypeParameters(); + const wasArrow = _expression.baseParseMaybeAssign.call(void 0, noIn, isWithinParens); + if (!wasArrow) { + _util.unexpected.call(void 0, ); + } + if (_base.state.error) { + _base.state.restoreFromSnapshot(snapshot); + } else { + return wasArrow; + } + + // Try parsing a type cast instead of an arrow function. + // This will start with a type assertion (via parseMaybeUnary). + // But don't directly call `tsParseTypeAssertion` because we want to handle any binary after it. + return _expression.baseParseMaybeAssign.call(void 0, noIn, isWithinParens); +} exports.tsParseMaybeAssignWithoutJSX = tsParseMaybeAssignWithoutJSX; + + function tsParseArrow() { + if (_index.match.call(void 0, _types.TokenType.colon)) { + // This is different from how the TS parser does it. + // TS uses lookahead. Babylon parses it as a parenthesized expression and converts. + const snapshot = _base.state.snapshot(); + + tsParseTypeOrTypePredicateAnnotation(_types.TokenType.colon); + if (_util.canInsertSemicolon.call(void 0, )) _util.unexpected.call(void 0, ); + if (!_index.match.call(void 0, _types.TokenType.arrow)) _util.unexpected.call(void 0, ); + + if (_base.state.error) { + _base.state.restoreFromSnapshot(snapshot); + } + } + return _index.eat.call(void 0, _types.TokenType.arrow); +} exports.tsParseArrow = tsParseArrow; + +// Allow type annotations inside of a parameter list. + function tsParseAssignableListItemTypes() { + const oldIsType = _index.pushTypeContext.call(void 0, 0); + _index.eat.call(void 0, _types.TokenType.question); + tsTryParseTypeAnnotation(); + _index.popTypeContext.call(void 0, oldIsType); +} exports.tsParseAssignableListItemTypes = tsParseAssignableListItemTypes; + + function tsParseMaybeDecoratorArguments() { + if (_index.match.call(void 0, _types.TokenType.lessThan) || _index.match.call(void 0, _types.TokenType.bitShiftL)) { + tsParseTypeArgumentsWithPossibleBitshift(); + } + _statement.baseParseMaybeDecoratorArguments.call(void 0, ); +} exports.tsParseMaybeDecoratorArguments = tsParseMaybeDecoratorArguments; |