| 'use strict'; | |
| 
 | |
| Object.defineProperty(exports, '__esModule', { value: true }); | |
| 
 | |
| var acorn = require('acorn'); | |
| var jsx = require('acorn-jsx'); | |
| var visitorKeys = require('eslint-visitor-keys'); | |
| 
 | |
| function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; } | |
| 
 | |
| function _interopNamespace(e) { | |
|     if (e && e.__esModule) return e; | |
|     var n = Object.create(null); | |
|     if (e) { | |
|         Object.keys(e).forEach(function (k) { | |
|             if (k !== 'default') { | |
|                 var d = Object.getOwnPropertyDescriptor(e, k); | |
|                 Object.defineProperty(n, k, d.get ? d : { | |
|                     enumerable: true, | |
|                     get: function () { return e[k]; } | |
|                 }); | |
|             } | |
|         }); | |
|     } | |
|     n["default"] = e; | |
|     return Object.freeze(n); | |
| } | |
| 
 | |
| var acorn__namespace = /*#__PURE__*/_interopNamespace(acorn); | |
| var jsx__default = /*#__PURE__*/_interopDefaultLegacy(jsx); | |
| var visitorKeys__namespace = /*#__PURE__*/_interopNamespace(visitorKeys); | |
| 
 | |
| /** | |
|  * @fileoverview Translates tokens between Acorn format and Esprima format. | |
|  * @author Nicholas C. Zakas | |
|  */ | |
| 
 | |
| //------------------------------------------------------------------------------ | |
| // Requirements | |
| //------------------------------------------------------------------------------ | |
|  | |
| // none! | |
|  | |
| //------------------------------------------------------------------------------ | |
| // Private | |
| //------------------------------------------------------------------------------ | |
|  | |
| 
 | |
| // Esprima Token Types | |
| const Token = { | |
|     Boolean: "Boolean", | |
|     EOF: "<end>", | |
|     Identifier: "Identifier", | |
|     PrivateIdentifier: "PrivateIdentifier", | |
|     Keyword: "Keyword", | |
|     Null: "Null", | |
|     Numeric: "Numeric", | |
|     Punctuator: "Punctuator", | |
|     String: "String", | |
|     RegularExpression: "RegularExpression", | |
|     Template: "Template", | |
|     JSXIdentifier: "JSXIdentifier", | |
|     JSXText: "JSXText" | |
| }; | |
| 
 | |
| /** | |
|  * Converts part of a template into an Esprima token. | |
|  * @param {AcornToken[]} tokens The Acorn tokens representing the template. | |
|  * @param {string} code The source code. | |
|  * @returns {EsprimaToken} The Esprima equivalent of the template token. | |
|  * @private | |
|  */ | |
| function convertTemplatePart(tokens, code) { | |
|     const firstToken = tokens[0], | |
|         lastTemplateToken = tokens[tokens.length - 1]; | |
| 
 | |
|     const token = { | |
|         type: Token.Template, | |
|         value: code.slice(firstToken.start, lastTemplateToken.end) | |
|     }; | |
| 
 | |
|     if (firstToken.loc) { | |
|         token.loc = { | |
|             start: firstToken.loc.start, | |
|             end: lastTemplateToken.loc.end | |
|         }; | |
|     } | |
| 
 | |
|     if (firstToken.range) { | |
|         token.start = firstToken.range[0]; | |
|         token.end = lastTemplateToken.range[1]; | |
|         token.range = [token.start, token.end]; | |
|     } | |
| 
 | |
|     return token; | |
| } | |
| 
 | |
| /** | |
|  * Contains logic to translate Acorn tokens into Esprima tokens. | |
|  * @param {Object} acornTokTypes The Acorn token types. | |
|  * @param {string} code The source code Acorn is parsing. This is necessary | |
|  *      to correct the "value" property of some tokens. | |
|  * @constructor | |
|  */ | |
| function TokenTranslator(acornTokTypes, code) { | |
| 
 | |
|     // token types | |
|     this._acornTokTypes = acornTokTypes; | |
| 
 | |
|     // token buffer for templates | |
|     this._tokens = []; | |
| 
 | |
|     // track the last curly brace | |
|     this._curlyBrace = null; | |
| 
 | |
|     // the source code | |
|     this._code = code; | |
| 
 | |
| } | |
| 
 | |
| TokenTranslator.prototype = { | |
|     constructor: TokenTranslator, | |
| 
 | |
|     /** | |
|      * Translates a single Esprima token to a single Acorn token. This may be | |
|      * inaccurate due to how templates are handled differently in Esprima and | |
|      * Acorn, but should be accurate for all other tokens. | |
|      * @param {AcornToken} token The Acorn token to translate. | |
|      * @param {Object} extra Espree extra object. | |
|      * @returns {EsprimaToken} The Esprima version of the token. | |
|      */ | |
|     translate(token, extra) { | |
| 
 | |
|         const type = token.type, | |
|             tt = this._acornTokTypes; | |
| 
 | |
|         if (type === tt.name) { | |
|             token.type = Token.Identifier; | |
| 
 | |
|             // TODO: See if this is an Acorn bug | |
|             if (token.value === "static") { | |
|                 token.type = Token.Keyword; | |
|             } | |
| 
 | |
|             if (extra.ecmaVersion > 5 && (token.value === "yield" || token.value === "let")) { | |
|                 token.type = Token.Keyword; | |
|             } | |
| 
 | |
|         } else if (type === tt.privateId) { | |
|             token.type = Token.PrivateIdentifier; | |
| 
 | |
|         } else if (type === tt.semi || type === tt.comma || | |
|                  type === tt.parenL || type === tt.parenR || | |
|                  type === tt.braceL || type === tt.braceR || | |
|                  type === tt.dot || type === tt.bracketL || | |
|                  type === tt.colon || type === tt.question || | |
|                  type === tt.bracketR || type === tt.ellipsis || | |
|                  type === tt.arrow || type === tt.jsxTagStart || | |
|                  type === tt.incDec || type === tt.starstar || | |
|                  type === tt.jsxTagEnd || type === tt.prefix || | |
|                  type === tt.questionDot || | |
|                  (type.binop && !type.keyword) || | |
|                  type.isAssign) { | |
| 
 | |
|             token.type = Token.Punctuator; | |
|             token.value = this._code.slice(token.start, token.end); | |
|         } else if (type === tt.jsxName) { | |
|             token.type = Token.JSXIdentifier; | |
|         } else if (type.label === "jsxText" || type === tt.jsxAttrValueToken) { | |
|             token.type = Token.JSXText; | |
|         } else if (type.keyword) { | |
|             if (type.keyword === "true" || type.keyword === "false") { | |
|                 token.type = Token.Boolean; | |
|             } else if (type.keyword === "null") { | |
|                 token.type = Token.Null; | |
|             } else { | |
|                 token.type = Token.Keyword; | |
|             } | |
|         } else if (type === tt.num) { | |
|             token.type = Token.Numeric; | |
|             token.value = this._code.slice(token.start, token.end); | |
|         } else if (type === tt.string) { | |
| 
 | |
|             if (extra.jsxAttrValueToken) { | |
|                 extra.jsxAttrValueToken = false; | |
|                 token.type = Token.JSXText; | |
|             } else { | |
|                 token.type = Token.String; | |
|             } | |
| 
 | |
|             token.value = this._code.slice(token.start, token.end); | |
|         } else if (type === tt.regexp) { | |
|             token.type = Token.RegularExpression; | |
|             const value = token.value; | |
| 
 | |
|             token.regex = { | |
|                 flags: value.flags, | |
|                 pattern: value.pattern | |
|             }; | |
|             token.value = `/${value.pattern}/${value.flags}`; | |
|         } | |
| 
 | |
|         return token; | |
|     }, | |
| 
 | |
|     /** | |
|      * Function to call during Acorn's onToken handler. | |
|      * @param {AcornToken} token The Acorn token. | |
|      * @param {Object} extra The Espree extra object. | |
|      * @returns {void} | |
|      */ | |
|     onToken(token, extra) { | |
| 
 | |
|         const tt = this._acornTokTypes, | |
|             tokens = extra.tokens, | |
|             templateTokens = this._tokens; | |
| 
 | |
|         /** | |
|          * Flushes the buffered template tokens and resets the template | |
|          * tracking. | |
|          * @returns {void} | |
|          * @private | |
|          */ | |
|         const translateTemplateTokens = () => { | |
|             tokens.push(convertTemplatePart(this._tokens, this._code)); | |
|             this._tokens = []; | |
|         }; | |
| 
 | |
|         if (token.type === tt.eof) { | |
| 
 | |
|             // might be one last curlyBrace | |
|             if (this._curlyBrace) { | |
|                 tokens.push(this.translate(this._curlyBrace, extra)); | |
|             } | |
| 
 | |
|             return; | |
|         } | |
| 
 | |
|         if (token.type === tt.backQuote) { | |
| 
 | |
|             // if there's already a curly, it's not part of the template | |
|             if (this._curlyBrace) { | |
|                 tokens.push(this.translate(this._curlyBrace, extra)); | |
|                 this._curlyBrace = null; | |
|             } | |
| 
 | |
|             templateTokens.push(token); | |
| 
 | |
|             // it's the end | |
|             if (templateTokens.length > 1) { | |
|                 translateTemplateTokens(); | |
|             } | |
| 
 | |
|             return; | |
|         } | |
|         if (token.type === tt.dollarBraceL) { | |
|             templateTokens.push(token); | |
|             translateTemplateTokens(); | |
|             return; | |
|         } | |
|         if (token.type === tt.braceR) { | |
| 
 | |
|             // if there's already a curly, it's not part of the template | |
|             if (this._curlyBrace) { | |
|                 tokens.push(this.translate(this._curlyBrace, extra)); | |
|             } | |
| 
 | |
|             // store new curly for later | |
|             this._curlyBrace = token; | |
|             return; | |
|         } | |
|         if (token.type === tt.template || token.type === tt.invalidTemplate) { | |
|             if (this._curlyBrace) { | |
|                 templateTokens.push(this._curlyBrace); | |
|                 this._curlyBrace = null; | |
|             } | |
| 
 | |
|             templateTokens.push(token); | |
|             return; | |
|         } | |
| 
 | |
|         if (this._curlyBrace) { | |
|             tokens.push(this.translate(this._curlyBrace, extra)); | |
|             this._curlyBrace = null; | |
|         } | |
| 
 | |
|         tokens.push(this.translate(token, extra)); | |
|     } | |
| }; | |
| 
 | |
| /** | |
|  * @fileoverview A collection of methods for processing Espree's options. | |
|  * @author Kai Cataldo | |
|  */ | |
| 
 | |
| //------------------------------------------------------------------------------ | |
| // Helpers | |
| //------------------------------------------------------------------------------ | |
|  | |
| const SUPPORTED_VERSIONS = [ | |
|     3, | |
|     5, | |
|     6, // 2015 | |
|     7, // 2016 | |
|     8, // 2017 | |
|     9, // 2018 | |
|     10, // 2019 | |
|     11, // 2020 | |
|     12, // 2021 | |
|     13, // 2022 | |
|     14, // 2023 | |
|     15 // 2024 | |
| ]; | |
| 
 | |
| /** | |
|  * Get the latest ECMAScript version supported by Espree. | |
|  * @returns {number} The latest ECMAScript version. | |
|  */ | |
| function getLatestEcmaVersion() { | |
|     return SUPPORTED_VERSIONS[SUPPORTED_VERSIONS.length - 1]; | |
| } | |
| 
 | |
| /** | |
|  * Get the list of ECMAScript versions supported by Espree. | |
|  * @returns {number[]} An array containing the supported ECMAScript versions. | |
|  */ | |
| function getSupportedEcmaVersions() { | |
|     return [...SUPPORTED_VERSIONS]; | |
| } | |
| 
 | |
| /** | |
|  * Normalize ECMAScript version from the initial config | |
|  * @param {(number|"latest")} ecmaVersion ECMAScript version from the initial config | |
|  * @throws {Error} throws an error if the ecmaVersion is invalid. | |
|  * @returns {number} normalized ECMAScript version | |
|  */ | |
| function normalizeEcmaVersion(ecmaVersion = 5) { | |
| 
 | |
|     let version = ecmaVersion === "latest" ? getLatestEcmaVersion() : ecmaVersion; | |
| 
 | |
|     if (typeof version !== "number") { | |
|         throw new Error(`ecmaVersion must be a number or "latest". Received value of type ${typeof ecmaVersion} instead.`); | |
|     } | |
| 
 | |
|     // Calculate ECMAScript edition number from official year version starting with | |
|     // ES2015, which corresponds with ES6 (or a difference of 2009). | |
|     if (version >= 2015) { | |
|         version -= 2009; | |
|     } | |
| 
 | |
|     if (!SUPPORTED_VERSIONS.includes(version)) { | |
|         throw new Error("Invalid ecmaVersion."); | |
|     } | |
| 
 | |
|     return version; | |
| } | |
| 
 | |
| /** | |
|  * Normalize sourceType from the initial config | |
|  * @param {string} sourceType to normalize | |
|  * @throws {Error} throw an error if sourceType is invalid | |
|  * @returns {string} normalized sourceType | |
|  */ | |
| function normalizeSourceType(sourceType = "script") { | |
|     if (sourceType === "script" || sourceType === "module") { | |
|         return sourceType; | |
|     } | |
| 
 | |
|     if (sourceType === "commonjs") { | |
|         return "script"; | |
|     } | |
| 
 | |
|     throw new Error("Invalid sourceType."); | |
| } | |
| 
 | |
| /** | |
|  * Normalize parserOptions | |
|  * @param {Object} options the parser options to normalize | |
|  * @throws {Error} throw an error if found invalid option. | |
|  * @returns {Object} normalized options | |
|  */ | |
| function normalizeOptions(options) { | |
|     const ecmaVersion = normalizeEcmaVersion(options.ecmaVersion); | |
|     const sourceType = normalizeSourceType(options.sourceType); | |
|     const ranges = options.range === true; | |
|     const locations = options.loc === true; | |
| 
 | |
|     if (ecmaVersion !== 3 && options.allowReserved) { | |
| 
 | |
|         // a value of `false` is intentionally allowed here, so a shared config can overwrite it when needed | |
|         throw new Error("`allowReserved` is only supported when ecmaVersion is 3"); | |
|     } | |
|     if (typeof options.allowReserved !== "undefined" && typeof options.allowReserved !== "boolean") { | |
|         throw new Error("`allowReserved`, when present, must be `true` or `false`"); | |
|     } | |
|     const allowReserved = ecmaVersion === 3 ? (options.allowReserved || "never") : false; | |
|     const ecmaFeatures = options.ecmaFeatures || {}; | |
|     const allowReturnOutsideFunction = options.sourceType === "commonjs" || | |
|         Boolean(ecmaFeatures.globalReturn); | |
| 
 | |
|     if (sourceType === "module" && ecmaVersion < 6) { | |
|         throw new Error("sourceType 'module' is not supported when ecmaVersion < 2015. Consider adding `{ ecmaVersion: 2015 }` to the parser options."); | |
|     } | |
| 
 | |
|     return Object.assign({}, options, { | |
|         ecmaVersion, | |
|         sourceType, | |
|         ranges, | |
|         locations, | |
|         allowReserved, | |
|         allowReturnOutsideFunction | |
|     }); | |
| } | |
| 
 | |
| /* eslint no-param-reassign: 0 -- stylistic choice */ | |
| 
 | |
| 
 | |
| const STATE = Symbol("espree's internal state"); | |
| const ESPRIMA_FINISH_NODE = Symbol("espree's esprimaFinishNode"); | |
| 
 | |
| 
 | |
| /** | |
|  * Converts an Acorn comment to a Esprima comment. | |
|  * @param {boolean} block True if it's a block comment, false if not. | |
|  * @param {string} text The text of the comment. | |
|  * @param {int} start The index at which the comment starts. | |
|  * @param {int} end The index at which the comment ends. | |
|  * @param {Location} startLoc The location at which the comment starts. | |
|  * @param {Location} endLoc The location at which the comment ends. | |
|  * @param {string} code The source code being parsed. | |
|  * @returns {Object} The comment object. | |
|  * @private | |
|  */ | |
| function convertAcornCommentToEsprimaComment(block, text, start, end, startLoc, endLoc, code) { | |
|     let type; | |
| 
 | |
|     if (block) { | |
|         type = "Block"; | |
|     } else if (code.slice(start, start + 2) === "#!") { | |
|         type = "Hashbang"; | |
|     } else { | |
|         type = "Line"; | |
|     } | |
| 
 | |
|     const comment = { | |
|         type, | |
|         value: text | |
|     }; | |
| 
 | |
|     if (typeof start === "number") { | |
|         comment.start = start; | |
|         comment.end = end; | |
|         comment.range = [start, end]; | |
|     } | |
| 
 | |
|     if (typeof startLoc === "object") { | |
|         comment.loc = { | |
|             start: startLoc, | |
|             end: endLoc | |
|         }; | |
|     } | |
| 
 | |
|     return comment; | |
| } | |
| 
 | |
| var espree = () => Parser => { | |
|     const tokTypes = Object.assign({}, Parser.acorn.tokTypes); | |
| 
 | |
|     if (Parser.acornJsx) { | |
|         Object.assign(tokTypes, Parser.acornJsx.tokTypes); | |
|     } | |
| 
 | |
|     return class Espree extends Parser { | |
|         constructor(opts, code) { | |
|             if (typeof opts !== "object" || opts === null) { | |
|                 opts = {}; | |
|             } | |
|             if (typeof code !== "string" && !(code instanceof String)) { | |
|                 code = String(code); | |
|             } | |
| 
 | |
|             // save original source type in case of commonjs | |
|             const originalSourceType = opts.sourceType; | |
|             const options = normalizeOptions(opts); | |
|             const ecmaFeatures = options.ecmaFeatures || {}; | |
|             const tokenTranslator = | |
|                 options.tokens === true | |
|                     ? new TokenTranslator(tokTypes, code) | |
|                     : null; | |
| 
 | |
|             /* | |
|              * Data that is unique to Espree and is not represented internally | |
|              * in Acorn. | |
|              * | |
|              * For ES2023 hashbangs, Espree will call `onComment()` during the | |
|              * constructor, so we must define state before having access to | |
|              * `this`. | |
|              */ | |
|             const state = { | |
|                 originalSourceType: originalSourceType || options.sourceType, | |
|                 tokens: tokenTranslator ? [] : null, | |
|                 comments: options.comment === true ? [] : null, | |
|                 impliedStrict: ecmaFeatures.impliedStrict === true && options.ecmaVersion >= 5, | |
|                 ecmaVersion: options.ecmaVersion, | |
|                 jsxAttrValueToken: false, | |
|                 lastToken: null, | |
|                 templateElements: [] | |
|             }; | |
| 
 | |
|             // Initialize acorn parser. | |
|             super({ | |
| 
 | |
|                 // do not use spread, because we don't want to pass any unknown options to acorn | |
|                 ecmaVersion: options.ecmaVersion, | |
|                 sourceType: options.sourceType, | |
|                 ranges: options.ranges, | |
|                 locations: options.locations, | |
|                 allowReserved: options.allowReserved, | |
| 
 | |
|                 // Truthy value is true for backward compatibility. | |
|                 allowReturnOutsideFunction: options.allowReturnOutsideFunction, | |
| 
 | |
|                 // Collect tokens | |
|                 onToken(token) { | |
|                     if (tokenTranslator) { | |
| 
 | |
|                         // Use `tokens`, `ecmaVersion`, and `jsxAttrValueToken` in the state. | |
|                         tokenTranslator.onToken(token, state); | |
|                     } | |
|                     if (token.type !== tokTypes.eof) { | |
|                         state.lastToken = token; | |
|                     } | |
|                 }, | |
| 
 | |
|                 // Collect comments | |
|                 onComment(block, text, start, end, startLoc, endLoc) { | |
|                     if (state.comments) { | |
|                         const comment = convertAcornCommentToEsprimaComment(block, text, start, end, startLoc, endLoc, code); | |
| 
 | |
|                         state.comments.push(comment); | |
|                     } | |
|                 } | |
|             }, code); | |
| 
 | |
|             /* | |
|              * We put all of this data into a symbol property as a way to avoid | |
|              * potential naming conflicts with future versions of Acorn. | |
|              */ | |
|             this[STATE] = state; | |
|         } | |
| 
 | |
|         tokenize() { | |
|             do { | |
|                 this.next(); | |
|             } while (this.type !== tokTypes.eof); | |
| 
 | |
|             // Consume the final eof token | |
|             this.next(); | |
| 
 | |
|             const extra = this[STATE]; | |
|             const tokens = extra.tokens; | |
| 
 | |
|             if (extra.comments) { | |
|                 tokens.comments = extra.comments; | |
|             } | |
| 
 | |
|             return tokens; | |
|         } | |
| 
 | |
|         finishNode(...args) { | |
|             const result = super.finishNode(...args); | |
| 
 | |
|             return this[ESPRIMA_FINISH_NODE](result); | |
|         } | |
| 
 | |
|         finishNodeAt(...args) { | |
|             const result = super.finishNodeAt(...args); | |
| 
 | |
|             return this[ESPRIMA_FINISH_NODE](result); | |
|         } | |
| 
 | |
|         parse() { | |
|             const extra = this[STATE]; | |
|             const program = super.parse(); | |
| 
 | |
|             program.sourceType = extra.originalSourceType; | |
| 
 | |
|             if (extra.comments) { | |
|                 program.comments = extra.comments; | |
|             } | |
|             if (extra.tokens) { | |
|                 program.tokens = extra.tokens; | |
|             } | |
| 
 | |
|             /* | |
|              * Adjust opening and closing position of program to match Esprima. | |
|              * Acorn always starts programs at range 0 whereas Esprima starts at the | |
|              * first AST node's start (the only real difference is when there's leading | |
|              * whitespace or leading comments). Acorn also counts trailing whitespace | |
|              * as part of the program whereas Esprima only counts up to the last token. | |
|              */ | |
|             if (program.body.length) { | |
|                 const [firstNode] = program.body; | |
| 
 | |
|                 if (program.range) { | |
|                     program.range[0] = firstNode.range[0]; | |
|                 } | |
|                 if (program.loc) { | |
|                     program.loc.start = firstNode.loc.start; | |
|                 } | |
|                 program.start = firstNode.start; | |
|             } | |
|             if (extra.lastToken) { | |
|                 if (program.range) { | |
|                     program.range[1] = extra.lastToken.range[1]; | |
|                 } | |
|                 if (program.loc) { | |
|                     program.loc.end = extra.lastToken.loc.end; | |
|                 } | |
|                 program.end = extra.lastToken.end; | |
|             } | |
| 
 | |
| 
 | |
|             /* | |
|              * https://github.com/eslint/espree/issues/349 | |
|              * Ensure that template elements have correct range information. | |
|              * This is one location where Acorn produces a different value | |
|              * for its start and end properties vs. the values present in the | |
|              * range property. In order to avoid confusion, we set the start | |
|              * and end properties to the values that are present in range. | |
|              * This is done here, instead of in finishNode(), because Acorn | |
|              * uses the values of start and end internally while parsing, making | |
|              * it dangerous to change those values while parsing is ongoing. | |
|              * By waiting until the end of parsing, we can safely change these | |
|              * values without affect any other part of the process. | |
|              */ | |
|             this[STATE].templateElements.forEach(templateElement => { | |
|                 const startOffset = -1; | |
|                 const endOffset = templateElement.tail ? 1 : 2; | |
| 
 | |
|                 templateElement.start += startOffset; | |
|                 templateElement.end += endOffset; | |
| 
 | |
|                 if (templateElement.range) { | |
|                     templateElement.range[0] += startOffset; | |
|                     templateElement.range[1] += endOffset; | |
|                 } | |
| 
 | |
|                 if (templateElement.loc) { | |
|                     templateElement.loc.start.column += startOffset; | |
|                     templateElement.loc.end.column += endOffset; | |
|                 } | |
|             }); | |
| 
 | |
|             return program; | |
|         } | |
| 
 | |
|         parseTopLevel(node) { | |
|             if (this[STATE].impliedStrict) { | |
|                 this.strict = true; | |
|             } | |
|             return super.parseTopLevel(node); | |
|         } | |
| 
 | |
|         /** | |
|          * Overwrites the default raise method to throw Esprima-style errors. | |
|          * @param {int} pos The position of the error. | |
|          * @param {string} message The error message. | |
|          * @throws {SyntaxError} A syntax error. | |
|          * @returns {void} | |
|          */ | |
|         raise(pos, message) { | |
|             const loc = Parser.acorn.getLineInfo(this.input, pos); | |
|             const err = new SyntaxError(message); | |
| 
 | |
|             err.index = pos; | |
|             err.lineNumber = loc.line; | |
|             err.column = loc.column + 1; // acorn uses 0-based columns | |
|             throw err; | |
|         } | |
| 
 | |
|         /** | |
|          * Overwrites the default raise method to throw Esprima-style errors. | |
|          * @param {int} pos The position of the error. | |
|          * @param {string} message The error message. | |
|          * @throws {SyntaxError} A syntax error. | |
|          * @returns {void} | |
|          */ | |
|         raiseRecoverable(pos, message) { | |
|             this.raise(pos, message); | |
|         } | |
| 
 | |
|         /** | |
|          * Overwrites the default unexpected method to throw Esprima-style errors. | |
|          * @param {int} pos The position of the error. | |
|          * @throws {SyntaxError} A syntax error. | |
|          * @returns {void} | |
|          */ | |
|         unexpected(pos) { | |
|             let message = "Unexpected token"; | |
| 
 | |
|             if (pos !== null && pos !== void 0) { | |
|                 this.pos = pos; | |
| 
 | |
|                 if (this.options.locations) { | |
|                     while (this.pos < this.lineStart) { | |
|                         this.lineStart = this.input.lastIndexOf("\n", this.lineStart - 2) + 1; | |
|                         --this.curLine; | |
|                     } | |
|                 } | |
| 
 | |
|                 this.nextToken(); | |
|             } | |
| 
 | |
|             if (this.end > this.start) { | |
|                 message += ` ${this.input.slice(this.start, this.end)}`; | |
|             } | |
| 
 | |
|             this.raise(this.start, message); | |
|         } | |
| 
 | |
|         /* | |
|         * Esprima-FB represents JSX strings as tokens called "JSXText", but Acorn-JSX | |
|         * uses regular tt.string without any distinction between this and regular JS | |
|         * strings. As such, we intercept an attempt to read a JSX string and set a flag | |
|         * on extra so that when tokens are converted, the next token will be switched | |
|         * to JSXText via onToken. | |
|         */ | |
|         jsx_readString(quote) { // eslint-disable-line camelcase -- required by API | |
|             const result = super.jsx_readString(quote); | |
| 
 | |
|             if (this.type === tokTypes.string) { | |
|                 this[STATE].jsxAttrValueToken = true; | |
|             } | |
|             return result; | |
|         } | |
| 
 | |
|         /** | |
|          * Performs last-minute Esprima-specific compatibility checks and fixes. | |
|          * @param {ASTNode} result The node to check. | |
|          * @returns {ASTNode} The finished node. | |
|          */ | |
|         [ESPRIMA_FINISH_NODE](result) { | |
| 
 | |
|             // Acorn doesn't count the opening and closing backticks as part of templates | |
|             // so we have to adjust ranges/locations appropriately. | |
|             if (result.type === "TemplateElement") { | |
| 
 | |
|                 // save template element references to fix start/end later | |
|                 this[STATE].templateElements.push(result); | |
|             } | |
| 
 | |
|             if (result.type.includes("Function") && !result.generator) { | |
|                 result.generator = false; | |
|             } | |
| 
 | |
|             return result; | |
|         } | |
|     }; | |
| }; | |
| 
 | |
| const version$1 = "9.6.1"; | |
| 
 | |
| /* eslint-disable jsdoc/no-multi-asterisks -- needed to preserve original formatting of licences */ | |
| 
 | |
| 
 | |
| // To initialize lazily. | |
| const parsers = { | |
|     _regular: null, | |
|     _jsx: null, | |
| 
 | |
|     get regular() { | |
|         if (this._regular === null) { | |
|             this._regular = acorn__namespace.Parser.extend(espree()); | |
|         } | |
|         return this._regular; | |
|     }, | |
| 
 | |
|     get jsx() { | |
|         if (this._jsx === null) { | |
|             this._jsx = acorn__namespace.Parser.extend(jsx__default["default"](), espree()); | |
|         } | |
|         return this._jsx; | |
|     }, | |
| 
 | |
|     get(options) { | |
|         const useJsx = Boolean( | |
|             options && | |
|             options.ecmaFeatures && | |
|             options.ecmaFeatures.jsx | |
|         ); | |
| 
 | |
|         return useJsx ? this.jsx : this.regular; | |
|     } | |
| }; | |
| 
 | |
| //------------------------------------------------------------------------------ | |
| // Tokenizer | |
| //------------------------------------------------------------------------------ | |
|  | |
| /** | |
|  * Tokenizes the given code. | |
|  * @param {string} code The code to tokenize. | |
|  * @param {Object} options Options defining how to tokenize. | |
|  * @returns {Token[]} An array of tokens. | |
|  * @throws {SyntaxError} If the input code is invalid. | |
|  * @private | |
|  */ | |
| function tokenize(code, options) { | |
|     const Parser = parsers.get(options); | |
| 
 | |
|     // Ensure to collect tokens. | |
|     if (!options || options.tokens !== true) { | |
|         options = Object.assign({}, options, { tokens: true }); // eslint-disable-line no-param-reassign -- stylistic choice | |
|     } | |
| 
 | |
|     return new Parser(options, code).tokenize(); | |
| } | |
| 
 | |
| //------------------------------------------------------------------------------ | |
| // Parser | |
| //------------------------------------------------------------------------------ | |
|  | |
| /** | |
|  * Parses the given code. | |
|  * @param {string} code The code to tokenize. | |
|  * @param {Object} options Options defining how to tokenize. | |
|  * @returns {ASTNode} The "Program" AST node. | |
|  * @throws {SyntaxError} If the input code is invalid. | |
|  */ | |
| function parse(code, options) { | |
|     const Parser = parsers.get(options); | |
| 
 | |
|     return new Parser(options, code).parse(); | |
| } | |
| 
 | |
| //------------------------------------------------------------------------------ | |
| // Public | |
| //------------------------------------------------------------------------------ | |
|  | |
| const version = version$1; | |
| const name = "espree"; | |
| 
 | |
| /* istanbul ignore next */ | |
| const VisitorKeys = (function() { | |
|     return visitorKeys__namespace.KEYS; | |
| }()); | |
| 
 | |
| // Derive node types from VisitorKeys | |
| /* istanbul ignore next */ | |
| const Syntax = (function() { | |
|     let key, | |
|         types = {}; | |
| 
 | |
|     if (typeof Object.create === "function") { | |
|         types = Object.create(null); | |
|     } | |
| 
 | |
|     for (key in VisitorKeys) { | |
|         if (Object.hasOwnProperty.call(VisitorKeys, key)) { | |
|             types[key] = key; | |
|         } | |
|     } | |
| 
 | |
|     if (typeof Object.freeze === "function") { | |
|         Object.freeze(types); | |
|     } | |
| 
 | |
|     return types; | |
| }()); | |
| 
 | |
| const latestEcmaVersion = getLatestEcmaVersion(); | |
| 
 | |
| const supportedEcmaVersions = getSupportedEcmaVersions(); | |
| 
 | |
| exports.Syntax = Syntax; | |
| exports.VisitorKeys = VisitorKeys; | |
| exports.latestEcmaVersion = latestEcmaVersion; | |
| exports.name = name; | |
| exports.parse = parse; | |
| exports.supportedEcmaVersions = supportedEcmaVersions; | |
| exports.tokenize = tokenize; | |
| exports.version = version;
 |