884 lines
		
	
	
		
			27 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			884 lines
		
	
	
		
			27 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
'use strict';
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Object.defineProperty(exports, '__esModule', { value: true });
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var acorn = require('acorn');
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var jsx = require('acorn-jsx');
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var visitorKeys = require('eslint-visitor-keys');
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function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; }
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function _interopNamespace(e) {
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    if (e && e.__esModule) return e;
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    var n = Object.create(null);
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    if (e) {
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        Object.keys(e).forEach(function (k) {
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            if (k !== 'default') {
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                var d = Object.getOwnPropertyDescriptor(e, k);
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                Object.defineProperty(n, k, d.get ? d : {
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                    enumerable: true,
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                    get: function () { return e[k]; }
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                });
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            }
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        });
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    }
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    n["default"] = e;
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    return Object.freeze(n);
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}
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var acorn__namespace = /*#__PURE__*/_interopNamespace(acorn);
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var jsx__default = /*#__PURE__*/_interopDefaultLegacy(jsx);
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var visitorKeys__namespace = /*#__PURE__*/_interopNamespace(visitorKeys);
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/**
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 * @fileoverview Translates tokens between Acorn format and Esprima format.
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 * @author Nicholas C. Zakas
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 */
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//------------------------------------------------------------------------------
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// Requirements
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//------------------------------------------------------------------------------
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// none!
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//------------------------------------------------------------------------------
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// Private
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//------------------------------------------------------------------------------
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// Esprima Token Types
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const Token = {
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    Boolean: "Boolean",
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    EOF: "<end>",
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    Identifier: "Identifier",
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    PrivateIdentifier: "PrivateIdentifier",
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    Keyword: "Keyword",
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    Null: "Null",
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    Numeric: "Numeric",
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    Punctuator: "Punctuator",
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    String: "String",
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    RegularExpression: "RegularExpression",
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    Template: "Template",
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    JSXIdentifier: "JSXIdentifier",
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    JSXText: "JSXText"
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};
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/**
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 * Converts part of a template into an Esprima token.
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 * @param {AcornToken[]} tokens The Acorn tokens representing the template.
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 * @param {string} code The source code.
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 * @returns {EsprimaToken} The Esprima equivalent of the template token.
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 * @private
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 */
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function convertTemplatePart(tokens, code) {
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    const firstToken = tokens[0],
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        lastTemplateToken = tokens[tokens.length - 1];
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    const token = {
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        type: Token.Template,
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        value: code.slice(firstToken.start, lastTemplateToken.end)
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    };
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    if (firstToken.loc) {
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        token.loc = {
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            start: firstToken.loc.start,
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            end: lastTemplateToken.loc.end
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        };
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    }
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    if (firstToken.range) {
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        token.start = firstToken.range[0];
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        token.end = lastTemplateToken.range[1];
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        token.range = [token.start, token.end];
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    }
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    return token;
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}
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/**
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 * Contains logic to translate Acorn tokens into Esprima tokens.
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 * @param {Object} acornTokTypes The Acorn token types.
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 * @param {string} code The source code Acorn is parsing. This is necessary
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 *      to correct the "value" property of some tokens.
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 * @constructor
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 */
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function TokenTranslator(acornTokTypes, code) {
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    // token types
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    this._acornTokTypes = acornTokTypes;
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    // token buffer for templates
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    this._tokens = [];
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    // track the last curly brace
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    this._curlyBrace = null;
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    // the source code
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    this._code = code;
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}
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TokenTranslator.prototype = {
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    constructor: TokenTranslator,
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    /**
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     * Translates a single Esprima token to a single Acorn token. This may be
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     * inaccurate due to how templates are handled differently in Esprima and
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     * Acorn, but should be accurate for all other tokens.
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     * @param {AcornToken} token The Acorn token to translate.
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     * @param {Object} extra Espree extra object.
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     * @returns {EsprimaToken} The Esprima version of the token.
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     */
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    translate(token, extra) {
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        const type = token.type,
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            tt = this._acornTokTypes;
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        if (type === tt.name) {
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            token.type = Token.Identifier;
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            // TODO: See if this is an Acorn bug
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            if (token.value === "static") {
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                token.type = Token.Keyword;
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            }
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            if (extra.ecmaVersion > 5 && (token.value === "yield" || token.value === "let")) {
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                token.type = Token.Keyword;
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            }
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        } else if (type === tt.privateId) {
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            token.type = Token.PrivateIdentifier;
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        } else if (type === tt.semi || type === tt.comma ||
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                 type === tt.parenL || type === tt.parenR ||
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                 type === tt.braceL || type === tt.braceR ||
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                 type === tt.dot || type === tt.bracketL ||
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                 type === tt.colon || type === tt.question ||
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                 type === tt.bracketR || type === tt.ellipsis ||
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                 type === tt.arrow || type === tt.jsxTagStart ||
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                 type === tt.incDec || type === tt.starstar ||
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                 type === tt.jsxTagEnd || type === tt.prefix ||
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                 type === tt.questionDot ||
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                 (type.binop && !type.keyword) ||
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                 type.isAssign) {
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            token.type = Token.Punctuator;
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            token.value = this._code.slice(token.start, token.end);
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        } else if (type === tt.jsxName) {
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            token.type = Token.JSXIdentifier;
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        } else if (type.label === "jsxText" || type === tt.jsxAttrValueToken) {
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            token.type = Token.JSXText;
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        } else if (type.keyword) {
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            if (type.keyword === "true" || type.keyword === "false") {
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                token.type = Token.Boolean;
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            } else if (type.keyword === "null") {
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                token.type = Token.Null;
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            } else {
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                token.type = Token.Keyword;
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            }
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        } else if (type === tt.num) {
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            token.type = Token.Numeric;
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            token.value = this._code.slice(token.start, token.end);
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        } else if (type === tt.string) {
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            if (extra.jsxAttrValueToken) {
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                extra.jsxAttrValueToken = false;
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                token.type = Token.JSXText;
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            } else {
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                token.type = Token.String;
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            }
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            token.value = this._code.slice(token.start, token.end);
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        } else if (type === tt.regexp) {
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            token.type = Token.RegularExpression;
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            const value = token.value;
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            token.regex = {
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                flags: value.flags,
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                pattern: value.pattern
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            };
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            token.value = `/${value.pattern}/${value.flags}`;
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        }
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        return token;
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    },
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    /**
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     * Function to call during Acorn's onToken handler.
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     * @param {AcornToken} token The Acorn token.
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     * @param {Object} extra The Espree extra object.
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     * @returns {void}
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     */
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    onToken(token, extra) {
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        const tt = this._acornTokTypes,
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            tokens = extra.tokens,
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            templateTokens = this._tokens;
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        /**
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         * Flushes the buffered template tokens and resets the template
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         * tracking.
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         * @returns {void}
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         * @private
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         */
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        const translateTemplateTokens = () => {
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            tokens.push(convertTemplatePart(this._tokens, this._code));
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            this._tokens = [];
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        };
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        if (token.type === tt.eof) {
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            // might be one last curlyBrace
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            if (this._curlyBrace) {
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                tokens.push(this.translate(this._curlyBrace, extra));
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            }
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            return;
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        }
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        if (token.type === tt.backQuote) {
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            // if there's already a curly, it's not part of the template
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            if (this._curlyBrace) {
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                tokens.push(this.translate(this._curlyBrace, extra));
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                this._curlyBrace = null;
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            }
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            templateTokens.push(token);
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            // it's the end
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            if (templateTokens.length > 1) {
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                translateTemplateTokens();
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            }
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            return;
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        }
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        if (token.type === tt.dollarBraceL) {
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            templateTokens.push(token);
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            translateTemplateTokens();
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            return;
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        }
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        if (token.type === tt.braceR) {
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            // if there's already a curly, it's not part of the template
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            if (this._curlyBrace) {
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                tokens.push(this.translate(this._curlyBrace, extra));
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            }
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            // store new curly for later
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            this._curlyBrace = token;
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            return;
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        }
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        if (token.type === tt.template || token.type === tt.invalidTemplate) {
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            if (this._curlyBrace) {
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                templateTokens.push(this._curlyBrace);
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                this._curlyBrace = null;
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            }
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            templateTokens.push(token);
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            return;
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        }
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        if (this._curlyBrace) {
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            tokens.push(this.translate(this._curlyBrace, extra));
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            this._curlyBrace = null;
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        }
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        tokens.push(this.translate(token, extra));
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    }
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};
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/**
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 * @fileoverview A collection of methods for processing Espree's options.
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 * @author Kai Cataldo
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 */
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//------------------------------------------------------------------------------
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// Helpers
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//------------------------------------------------------------------------------
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const SUPPORTED_VERSIONS = [
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    3,
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    5,
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    6, // 2015
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    7, // 2016
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    8, // 2017
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    9, // 2018
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    10, // 2019
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    11, // 2020
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    12, // 2021
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    13, // 2022
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    14, // 2023
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    15 // 2024
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];
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/**
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 * Get the latest ECMAScript version supported by Espree.
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 * @returns {number} The latest ECMAScript version.
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 */
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function getLatestEcmaVersion() {
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    return SUPPORTED_VERSIONS[SUPPORTED_VERSIONS.length - 1];
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}
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/**
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 * Get the list of ECMAScript versions supported by Espree.
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 * @returns {number[]} An array containing the supported ECMAScript versions.
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 */
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function getSupportedEcmaVersions() {
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    return [...SUPPORTED_VERSIONS];
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}
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/**
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 * Normalize ECMAScript version from the initial config
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 * @param {(number|"latest")} ecmaVersion ECMAScript version from the initial config
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 * @throws {Error} throws an error if the ecmaVersion is invalid.
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 * @returns {number} normalized ECMAScript version
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 */
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function normalizeEcmaVersion(ecmaVersion = 5) {
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    let version = ecmaVersion === "latest" ? getLatestEcmaVersion() : ecmaVersion;
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    if (typeof version !== "number") {
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        throw new Error(`ecmaVersion must be a number or "latest". Received value of type ${typeof ecmaVersion} instead.`);
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    }
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    // Calculate ECMAScript edition number from official year version starting with
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    // ES2015, which corresponds with ES6 (or a difference of 2009).
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    if (version >= 2015) {
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        version -= 2009;
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    }
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    if (!SUPPORTED_VERSIONS.includes(version)) {
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        throw new Error("Invalid ecmaVersion.");
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    }
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    return version;
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}
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/**
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 * Normalize sourceType from the initial config
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 * @param {string} sourceType to normalize
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 * @throws {Error} throw an error if sourceType is invalid
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 * @returns {string} normalized sourceType
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 */
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function normalizeSourceType(sourceType = "script") {
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    if (sourceType === "script" || sourceType === "module") {
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        return sourceType;
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    }
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    if (sourceType === "commonjs") {
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        return "script";
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    }
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    throw new Error("Invalid sourceType.");
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}
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/**
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 * Normalize parserOptions
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 * @param {Object} options the parser options to normalize
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 * @throws {Error} throw an error if found invalid option.
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 * @returns {Object} normalized options
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 */
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function normalizeOptions(options) {
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    const ecmaVersion = normalizeEcmaVersion(options.ecmaVersion);
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    const sourceType = normalizeSourceType(options.sourceType);
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    const ranges = options.range === true;
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    const locations = options.loc === true;
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    if (ecmaVersion !== 3 && options.allowReserved) {
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        // a value of `false` is intentionally allowed here, so a shared config can overwrite it when needed
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        throw new Error("`allowReserved` is only supported when ecmaVersion is 3");
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    }
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    if (typeof options.allowReserved !== "undefined" && typeof options.allowReserved !== "boolean") {
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        throw new Error("`allowReserved`, when present, must be `true` or `false`");
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    }
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    const allowReserved = ecmaVersion === 3 ? (options.allowReserved || "never") : false;
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    const ecmaFeatures = options.ecmaFeatures || {};
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    const allowReturnOutsideFunction = options.sourceType === "commonjs" ||
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        Boolean(ecmaFeatures.globalReturn);
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    if (sourceType === "module" && ecmaVersion < 6) {
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        throw new Error("sourceType 'module' is not supported when ecmaVersion < 2015. Consider adding `{ ecmaVersion: 2015 }` to the parser options.");
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    }
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    return Object.assign({}, options, {
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        ecmaVersion,
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        sourceType,
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        ranges,
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        locations,
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        allowReserved,
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        allowReturnOutsideFunction
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    });
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}
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/* eslint no-param-reassign: 0 -- stylistic choice */
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const STATE = Symbol("espree's internal state");
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const ESPRIMA_FINISH_NODE = Symbol("espree's esprimaFinishNode");
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/**
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 * Converts an Acorn comment to a Esprima comment.
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 * @param {boolean} block True if it's a block comment, false if not.
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 * @param {string} text The text of the comment.
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 * @param {int} start The index at which the comment starts.
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 * @param {int} end The index at which the comment ends.
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 * @param {Location} startLoc The location at which the comment starts.
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 * @param {Location} endLoc The location at which the comment ends.
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 * @param {string} code The source code being parsed.
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 * @returns {Object} The comment object.
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 * @private
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 */
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function convertAcornCommentToEsprimaComment(block, text, start, end, startLoc, endLoc, code) {
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    let type;
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    if (block) {
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        type = "Block";
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    } else if (code.slice(start, start + 2) === "#!") {
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        type = "Hashbang";
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    } else {
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        type = "Line";
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    }
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    const comment = {
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        type,
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        value: text
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    };
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    if (typeof start === "number") {
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        comment.start = start;
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        comment.end = end;
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        comment.range = [start, end];
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    }
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    if (typeof startLoc === "object") {
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        comment.loc = {
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            start: startLoc,
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            end: endLoc
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        };
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    }
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    return comment;
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}
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var espree = () => Parser => {
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    const tokTypes = Object.assign({}, Parser.acorn.tokTypes);
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    if (Parser.acornJsx) {
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        Object.assign(tokTypes, Parser.acornJsx.tokTypes);
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    }
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    return class Espree extends Parser {
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        constructor(opts, code) {
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            if (typeof opts !== "object" || opts === null) {
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						|
                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;
 |