@phoenix-plugin-registry/hirse.outline-list/thirdparty/espree.js

Displays a list of the functions or definitions in the currently opened document. Works with CSS, CoffeeScript, HTML, Haxe, Jade, JavaScript, JSX, LESS, Markdown, PHP, Python, Ruby, SCSS, SVG, Stylus, and XML.

/*!
 * Esprima version 3.3.2
 * https://github.com/eslint/espree/releases/tag/v3.3.2
 * Copyright jQuery Foundation and other contributors, https://jquery.org/
 */
!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var f;"undefined"!=typeof window?f=window:"undefined"!=typeof global?f=global:"undefined"!=typeof self&&(f=self),f.espree=e()}}(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
'use strict';

var XHTMLEntities = require('./xhtml');

var hexNumber = /^[\da-fA-F]+$/;
var decimalNumber = /^\d+$/;

module.exports = function(acorn) {
  var tt = acorn.tokTypes;
  var tc = acorn.tokContexts;

  tc.j_oTag = new acorn.TokContext('<tag', false);
  tc.j_cTag = new acorn.TokContext('</tag', false);
  tc.j_expr = new acorn.TokContext('<tag>...</tag>', true, true);

  tt.jsxName = new acorn.TokenType('jsxName');
  tt.jsxText = new acorn.TokenType('jsxText', {beforeExpr: true});
  tt.jsxTagStart = new acorn.TokenType('jsxTagStart');
  tt.jsxTagEnd = new acorn.TokenType('jsxTagEnd');

  tt.jsxTagStart.updateContext = function() {
    this.context.push(tc.j_expr); // treat as beginning of JSX expression
    this.context.push(tc.j_oTag); // start opening tag context
    this.exprAllowed = false;
  };
  tt.jsxTagEnd.updateContext = function(prevType) {
    var out = this.context.pop();
    if (out === tc.j_oTag && prevType === tt.slash || out === tc.j_cTag) {
      this.context.pop();
      this.exprAllowed = this.curContext() === tc.j_expr;
    } else {
      this.exprAllowed = true;
    }
  };

  var pp = acorn.Parser.prototype;

  // Reads inline JSX contents token.

  pp.jsx_readToken = function() {
    var out = '', chunkStart = this.pos;
    for (;;) {
      if (this.pos >= this.input.length)
        this.raise(this.start, 'Unterminated JSX contents');
      var ch = this.input.charCodeAt(this.pos);

      switch (ch) {
      case 60: // '<'
      case 123: // '{'
        if (this.pos === this.start) {
          if (ch === 60 && this.exprAllowed) {
            ++this.pos;
            return this.finishToken(tt.jsxTagStart);
          }
          return this.getTokenFromCode(ch);
        }
        out += this.input.slice(chunkStart, this.pos);
        return this.finishToken(tt.jsxText, out);

      case 38: // '&'
        out += this.input.slice(chunkStart, this.pos);
        out += this.jsx_readEntity();
        chunkStart = this.pos;
        break;

      default:
        if (acorn.isNewLine(ch)) {
          out += this.input.slice(chunkStart, this.pos);
          out += this.jsx_readNewLine(true);
          chunkStart = this.pos;
        } else {
          ++this.pos;
        }
      }
    }
  };

  pp.jsx_readNewLine = function(normalizeCRLF) {
    var ch = this.input.charCodeAt(this.pos);
    var out;
    ++this.pos;
    if (ch === 13 && this.input.charCodeAt(this.pos) === 10) {
      ++this.pos;
      out = normalizeCRLF ? '\n' : '\r\n';
    } else {
      out = String.fromCharCode(ch);
    }
    if (this.options.locations) {
      ++this.curLine;
      this.lineStart = this.pos;
    }

    return out;
  };

  pp.jsx_readString = function(quote) {
    var out = '', chunkStart = ++this.pos;
    for (;;) {
      if (this.pos >= this.input.length)
        this.raise(this.start, 'Unterminated string constant');
      var ch = this.input.charCodeAt(this.pos);
      if (ch === quote) break;
      if (ch === 38) { // '&'
        out += this.input.slice(chunkStart, this.pos);
        out += this.jsx_readEntity();
        chunkStart = this.pos;
      } else if (acorn.isNewLine(ch)) {
        out += this.input.slice(chunkStart, this.pos);
        out += this.jsx_readNewLine(false);
        chunkStart = this.pos;
      } else {
        ++this.pos;
      }
    }
    out += this.input.slice(chunkStart, this.pos++);
    return this.finishToken(tt.string, out);
  };

  pp.jsx_readEntity = function() {
    var str = '', count = 0, entity;
    var ch = this.input[this.pos];
    if (ch !== '&')
      this.raise(this.pos, 'Entity must start with an ampersand');
    var startPos = ++this.pos;
    while (this.pos < this.input.length && count++ < 10) {
      ch = this.input[this.pos++];
      if (ch === ';') {
        if (str[0] === '#') {
          if (str[1] === 'x') {
            str = str.substr(2);
            if (hexNumber.test(str))
              entity = String.fromCharCode(parseInt(str, 16));
          } else {
            str = str.substr(1);
            if (decimalNumber.test(str))
              entity = String.fromCharCode(parseInt(str, 10));
          }
        } else {
          entity = XHTMLEntities[str];
        }
        break;
      }
      str += ch;
    }
    if (!entity) {
      this.pos = startPos;
      return '&';
    }
    return entity;
  };


  // 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.

  pp.jsx_readWord = function() {
    var ch, start = this.pos;
    do {
      ch = this.input.charCodeAt(++this.pos);
    } while (acorn.isIdentifierChar(ch) || ch === 45); // '-'
    return this.finishToken(tt.jsxName, this.input.slice(start, this.pos));
  };

  // Transforms JSX element name to string.

  function getQualifiedJSXName(object) {
    if (object.type === 'JSXIdentifier')
      return object.name;

    if (object.type === 'JSXNamespacedName')
      return object.namespace.name + ':' + object.name.name;

    if (object.type === 'JSXMemberExpression')
      return getQualifiedJSXName(object.object) + '.' +
      getQualifiedJSXName(object.property);
  }

  // Parse next token as JSX identifier

  pp.jsx_parseIdentifier = function() {
    var node = this.startNode();
    if (this.type === tt.jsxName)
      node.name = this.value;
    else if (this.type.keyword)
      node.name = this.type.keyword;
    else
      this.unexpected();
    this.next();
    return this.finishNode(node, 'JSXIdentifier');
  };

  // Parse namespaced identifier.

  pp.jsx_parseNamespacedName = function() {
    var startPos = this.start, startLoc = this.startLoc;
    var name = this.jsx_parseIdentifier();
    if (!this.options.plugins.jsx.allowNamespaces || !this.eat(tt.colon)) return name;
    var node = this.startNodeAt(startPos, startLoc);
    node.namespace = name;
    node.name = this.jsx_parseIdentifier();
    return this.finishNode(node, 'JSXNamespacedName');
  };

  // Parses element name in any form - namespaced, member
  // or single identifier.

  pp.jsx_parseElementName = function() {
    var startPos = this.start, startLoc = this.startLoc;
    var node = this.jsx_parseNamespacedName();
    if (this.type === tt.dot && node.type === 'JSXNamespacedName' && !this.options.plugins.jsx.allowNamespacedObjects) {
      this.unexpected();
    }
    while (this.eat(tt.dot)) {
      var newNode = this.startNodeAt(startPos, startLoc);
      newNode.object = node;
      newNode.property = this.jsx_parseIdentifier();
      node = this.finishNode(newNode, 'JSXMemberExpression');
    }
    return node;
  };

  // Parses any type of JSX attribute value.

  pp.jsx_parseAttributeValue = function() {
    switch (this.type) {
    case tt.braceL:
      var node = this.jsx_parseExpressionContainer();
      if (node.expression.type === 'JSXEmptyExpression')
        this.raise(node.start, 'JSX attributes must only be assigned a non-empty expression');
      return node;

    case tt.jsxTagStart:
    case tt.string:
      return this.parseExprAtom();

    default:
      this.raise(this.start, 'JSX value should be either an expression or a quoted JSX text');
    }
  };

  // JSXEmptyExpression is unique type since it doesn't actually parse anything,
  // and so it should start at the end of last read token (left brace) and finish
  // at the beginning of the next one (right brace).

  pp.jsx_parseEmptyExpression = function() {
    var node = this.startNodeAt(this.lastTokEnd, this.lastTokEndLoc);
    return this.finishNodeAt(node, 'JSXEmptyExpression', this.start, this.startLoc);
  };

  // Parses JSX expression enclosed into curly brackets.


  pp.jsx_parseExpressionContainer = function() {
    var node = this.startNode();
    this.next();
    node.expression = this.type === tt.braceR
      ? this.jsx_parseEmptyExpression()
      : this.parseExpression();
    this.expect(tt.braceR);
    return this.finishNode(node, 'JSXExpressionContainer');
  };

  // Parses following JSX attribute name-value pair.

  pp.jsx_parseAttribute = function() {
    var node = this.startNode();
    if (this.eat(tt.braceL)) {
      this.expect(tt.ellipsis);
      node.argument = this.parseMaybeAssign();
      this.expect(tt.braceR);
      return this.finishNode(node, 'JSXSpreadAttribute');
    }
    node.name = this.jsx_parseNamespacedName();
    node.value = this.eat(tt.eq) ? this.jsx_parseAttributeValue() : null;
    return this.finishNode(node, 'JSXAttribute');
  };

  // Parses JSX opening tag starting after '<'.

  pp.jsx_parseOpeningElementAt = function(startPos, startLoc) {
    var node = this.startNodeAt(startPos, startLoc);
    node.attributes = [];
    node.name = this.jsx_parseElementName();
    while (this.type !== tt.slash && this.type !== tt.jsxTagEnd)
      node.attributes.push(this.jsx_parseAttribute());
    node.selfClosing = this.eat(tt.slash);
    this.expect(tt.jsxTagEnd);
    return this.finishNode(node, 'JSXOpeningElement');
  };

  // Parses JSX closing tag starting after '</'.

  pp.jsx_parseClosingElementAt = function(startPos, startLoc) {
    var node = this.startNodeAt(startPos, startLoc);
    node.name = this.jsx_parseElementName();
    this.expect(tt.jsxTagEnd);
    return this.finishNode(node, 'JSXClosingElement');
  };

  // Parses entire JSX element, including it's opening tag
  // (starting after '<'), attributes, contents and closing tag.

  pp.jsx_parseElementAt = function(startPos, startLoc) {
    var node = this.startNodeAt(startPos, startLoc);
    var children = [];
    var openingElement = this.jsx_parseOpeningElementAt(startPos, startLoc);
    var closingElement = null;

    if (!openingElement.selfClosing) {
      contents: for (;;) {
        switch (this.type) {
        case tt.jsxTagStart:
          startPos = this.start; startLoc = this.startLoc;
          this.next();
          if (this.eat(tt.slash)) {
            closingElement = this.jsx_parseClosingElementAt(startPos, startLoc);
            break contents;
          }
          children.push(this.jsx_parseElementAt(startPos, startLoc));
          break;

        case tt.jsxText:
          children.push(this.parseExprAtom());
          break;

        case tt.braceL:
          children.push(this.jsx_parseExpressionContainer());
          break;

        default:
          this.unexpected();
        }
      }
      if (getQualifiedJSXName(closingElement.name) !== getQualifiedJSXName(openingElement.name)) {
        this.raise(
          closingElement.start,
          'Expected corresponding JSX closing tag for <' + getQualifiedJSXName(openingElement.name) + '>');
      }
    }

    node.openingElement = openingElement;
    node.closingElement = closingElement;
    node.children = children;
    if (this.type === tt.relational && this.value === "<") {
      this.raise(this.start, "Adjacent JSX elements must be wrapped in an enclosing tag");
    }
    return this.finishNode(node, 'JSXElement');
  };

  // Parses entire JSX element from current position.

  pp.jsx_parseElement = function() {
    var startPos = this.start, startLoc = this.startLoc;
    this.next();
    return this.jsx_parseElementAt(startPos, startLoc);
  };

  acorn.plugins.jsx = function(instance, opts) {
    if (!opts) {
      return;
    }

    if (typeof opts !== 'object') {
      opts = {};
    }

    instance.options.plugins.jsx = {
      allowNamespaces: opts.allowNamespaces !== false,
      allowNamespacedObjects: !!opts.allowNamespacedObjects
    };

    instance.extend('parseExprAtom', function(inner) {
      return function(refShortHandDefaultPos) {
        if (this.type === tt.jsxText)
          return this.parseLiteral(this.value);
        else if (this.type === tt.jsxTagStart)
          return this.jsx_parseElement();
        else
          return inner.call(this, refShortHandDefaultPos);
      };
    });

    instance.extend('readToken', function(inner) {
      return function(code) {
        var context = this.curContext();

        if (context === tc.j_expr) return this.jsx_readToken();

        if (context === tc.j_oTag || context === tc.j_cTag) {
          if (acorn.isIdentifierStart(code)) return this.jsx_readWord();

          if (code == 62) {
            ++this.pos;
            return this.finishToken(tt.jsxTagEnd);
          }

          if ((code === 34 || code === 39) && context == tc.j_oTag)
            return this.jsx_readString(code);
        }

        if (code === 60 && this.exprAllowed) {
          ++this.pos;
          return this.finishToken(tt.jsxTagStart);
        }
        return inner.call(this, code);
      };
    });

    instance.extend('updateContext', function(inner) {
      return function(prevType) {
        if (this.type == tt.braceL) {
          var curContext = this.curContext();
          if (curContext == tc.j_oTag) this.context.push(tc.b_expr);
          else if (curContext == tc.j_expr) this.context.push(tc.b_tmpl);
          else inner.call(this, prevType);
          this.exprAllowed = true;
        } else if (this.type === tt.slash && prevType === tt.jsxTagStart) {
          this.context.length -= 2; // do not consider JSX expr -> JSX open tag -> ... anymore
          this.context.push(tc.j_cTag); // reconsider as closing tag context
          this.exprAllowed = false;
        } else {
          return inner.call(this, prevType);
        }
      };
    });
  };

  return acorn;
};

},{"./xhtml":2}],2:[function(require,module,exports){
module.exports = {
  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'
};

},{}],3:[function(require,module,exports){
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
  typeof define === 'function' && define.amd ? define(['exports'], factory) :
  (factory((global.acorn = global.acorn || {})));
}(this, function (exports) { 'use strict';

  // Reserved word lists for various dialects of the language

  var reservedWords = {
    3: "abstract boolean byte char class double enum export extends final float goto implements import int interface long native package private protected public short static super synchronized throws transient volatile",
    5: "class enum extends super const export import",
    6: "enum",
    strict: "implements interface let package private protected public static yield",
    strictBind: "eval arguments"
  }

  // And the keywords

  var ecma5AndLessKeywords = "break case catch continue debugger default do else finally for function if return switch throw try var while with null true false instanceof typeof void delete new in this"

  var keywords = {
    5: ecma5AndLessKeywords,
    6: ecma5AndLessKeywords + " const class extends export import super"
  }

  // ## Character categories

  // Big ugly regular expressions that match characters in the
  // whitespace, identifier, and identifier-start categories. These
  // are only applied when a character is found to actually have a
  // code point above 128.
  // Generated by `bin/generate-identifier-regex.js`.

  var nonASCIIidentifierStartChars = "\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u037f\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u052f\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u08a0-\u08b4\u08b6-\u08bd\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0980\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0af9\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c39\u0c3d\u0c58-\u0c5a\u0c60\u0c61\u0c80\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d54-\u0d56\u0d5f-\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f5\u13f8-\u13fd\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f8\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1877\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191e\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19b0-\u19c9\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1c80-\u1c88\u1ce9-\u1cec\u1cee-\u1cf1\u1cf5\u1cf6\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2118-\u211d\u2124\u2126\u2128\u212a-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309b-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fd5\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua69d\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua7ae\ua7b0-\ua7b7\ua7f7-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua8fd\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\ua9e0-\ua9e4\ua9e6-\ua9ef\ua9fa-\ua9fe\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa7e-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uab30-\uab5a\uab5c-\uab65\uab70-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc"
  var nonASCIIidentifierChars = "\u200c\u200d\xb7\u0300-\u036f\u0387\u0483-\u0487\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u0669\u0670\u06d6-\u06dc\u06df-\u06e4\u06e7\u06e8\u06ea-\u06ed\u06f0-\u06f9\u0711\u0730-\u074a\u07a6-\u07b0\u07c0-\u07c9\u07eb-\u07f3\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0859-\u085b\u08d4-\u08e1\u08e3-\u0903\u093a-\u093c\u093e-\u094f\u0951-\u0957\u0962\u0963\u0966-\u096f\u0981-\u0983\u09bc\u09be-\u09c4\u09c7\u09c8\u09cb-\u09cd\u09d7\u09e2\u09e3\u09e6-\u09ef\u0a01-\u0a03\u0a3c\u0a3e-\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a66-\u0a71\u0a75\u0a81-\u0a83\u0abc\u0abe-\u0ac5\u0ac7-\u0ac9\u0acb-\u0acd\u0ae2\u0ae3\u0ae6-\u0aef\u0b01-\u0b03\u0b3c\u0b3e-\u0b44\u0b47\u0b48\u0b4b-\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b66-\u0b6f\u0b82\u0bbe-\u0bc2\u0bc6-\u0bc8\u0bca-\u0bcd\u0bd7\u0be6-\u0bef\u0c00-\u0c03\u0c3e-\u0c44\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0c66-\u0c6f\u0c81-\u0c83\u0cbc\u0cbe-\u0cc4\u0cc6-\u0cc8\u0cca-\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0ce6-\u0cef\u0d01-\u0d03\u0d3e-\u0d44\u0d46-\u0d48\u0d4a-\u0d4d\u0d57\u0d62\u0d63\u0d66-\u0d6f\u0d82\u0d83\u0dca\u0dcf-\u0dd4\u0dd6\u0dd8-\u0ddf\u0de6-\u0def\u0df2\u0df3\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0e50-\u0e59\u0eb1\u0eb4-\u0eb9\u0ebb\u0ebc\u0ec8-\u0ecd\u0ed0-\u0ed9\u0f18\u0f19\u0f20-\u0f29\u0f35\u0f37\u0f39\u0f3e\u0f3f\u0f71-\u0f84\u0f86\u0f87\u0f8d-\u0f97\u0f99-\u0fbc\u0fc6\u102b-\u103e\u1040-\u1049\u1056-\u1059\u105e-\u1060\u1062-\u1064\u1067-\u106d\u1071-\u1074\u1082-\u108d\u108f-\u109d\u135d-\u135f\u1369-\u1371\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b4-\u17d3\u17dd\u17e0-\u17e9\u180b-\u180d\u1810-\u1819\u18a9\u1920-\u192b\u1930-\u193b\u1946-\u194f\u19d0-\u19da\u1a17-\u1a1b\u1a55-\u1a5e\u1a60-\u1a7c\u1a7f-\u1a89\u1a90-\u1a99\u1ab0-\u1abd\u1b00-\u1b04\u1b34-\u1b44\u1b50-\u1b59\u1b6b-\u1b73\u1b80-\u1b82\u1ba1-\u1bad\u1bb0-\u1bb9\u1be6-\u1bf3\u1c24-\u1c37\u1c40-\u1c49\u1c50-\u1c59\u1cd0-\u1cd2\u1cd4-\u1ce8\u1ced\u1cf2-\u1cf4\u1cf8\u1cf9\u1dc0-\u1df5\u1dfb-\u1dff\u203f\u2040\u2054\u20d0-\u20dc\u20e1\u20e5-\u20f0\u2cef-\u2cf1\u2d7f\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua620-\ua629\ua66f\ua674-\ua67d\ua69e\ua69f\ua6f0\ua6f1\ua802\ua806\ua80b\ua823-\ua827\ua880\ua881\ua8b4-\ua8c5\ua8d0-\ua8d9\ua8e0-\ua8f1\ua900-\ua909\ua926-\ua92d\ua947-\ua953\ua980-\ua983\ua9b3-\ua9c0\ua9d0-\ua9d9\ua9e5\ua9f0-\ua9f9\uaa29-\uaa36\uaa43\uaa4c\uaa4d\uaa50-\uaa59\uaa7b-\uaa7d\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uaaeb-\uaaef\uaaf5\uaaf6\uabe3-\uabea\uabec\uabed\uabf0-\uabf9\ufb1e\ufe00-\ufe0f\ufe20-\ufe2f\ufe33\ufe34\ufe4d-\ufe4f\uff10-\uff19\uff3f"

  var nonASCIIidentifierStart = new RegExp("[" + nonASCIIidentifierStartChars + "]")
  var nonASCIIidentifier = new RegExp("[" + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "]")

  nonASCIIidentifierStartChars = nonASCIIidentifierChars = null

  // These are a run-length and offset encoded representation of the
  // >0xffff code points that are a valid part of identifiers. The
  // offset starts at 0x10000, and each pair of numbers represents an
  // offset to the next range, and then a size of the range. They were
  // generated by bin/generate-identifier-regex.js
  var astralIdentifierStartCodes = [0,11,2,25,2,18,2,1,2,14,3,13,35,122,70,52,268,28,4,48,48,31,17,26,6,37,11,29,3,35,5,7,2,4,43,157,19,35,5,35,5,39,9,51,157,310,10,21,11,7,153,5,3,0,2,43,2,1,4,0,3,22,11,22,10,30,66,18,2,1,11,21,11,25,71,55,7,1,65,0,16,3,2,2,2,26,45,28,4,28,36,7,2,27,28,53,11,21,11,18,14,17,111,72,56,50,14,50,785,52,76,44,33,24,27,35,42,34,4,0,13,47,15,3,22,0,2,0,36,17,2,24,85,6,2,0,2,3,2,14,2,9,8,46,39,7,3,1,3,21,2,6,2,1,2,4,4,0,19,0,13,4,159,52,19,3,54,47,21,1,2,0,185,46,42,3,37,47,21,0,60,42,86,25,391,63,32,0,449,56,264,8,2,36,18,0,50,29,881,921,103,110,18,195,2749,1070,4050,582,8634,568,8,30,114,29,19,47,17,3,32,20,6,18,881,68,12,0,67,12,65,0,32,6124,20,754,9486,1,3071,106,6,12,4,8,8,9,5991,84,2,70,2,1,3,0,3,1,3,3,2,11,2,0,2,6,2,64,2,3,3,7,2,6,2,27,2,3,2,4,2,0,4,6,2,339,3,24,2,24,2,30,2,24,2,30,2,24,2,30,2,24,2,30,2,24,2,7,4149,196,60,67,1213,3,2,26,2,1,2,0,3,0,2,9,2,3,2,0,2,0,7,0,5,0,2,0,2,0,2,2,2,1,2,0,3,0,2,0,2,0,2,0,2,0,2,1,2,0,3,3,2,6,2,3,2,3,2,0,2,9,2,16,6,2,2,4,2,16,4421,42710,42,4148,12,221,3,5761,10591,541]
  var astralIdentifierCodes = [509,0,227,0,150,4,294,9,1368,2,2,1,6,3,41,2,5,0,166,1,1306,2,54,14,32,9,16,3,46,10,54,9,7,2,37,13,2,9,52,0,13,2,49,13,10,2,4,9,83,11,7,0,161,11,6,9,7,3,57,0,2,6,3,1,3,2,10,0,11,1,3,6,4,4,193,17,10,9,87,19,13,9,214,6,3,8,28,1,83,16,16,9,82,12,9,9,84,14,5,9,423,9,838,7,2,7,17,9,57,21,2,13,19882,9,135,4,60,6,26,9,1016,45,17,3,19723,1,5319,4,4,5,9,7,3,6,31,3,149,2,1418,49,513,54,5,49,9,0,15,0,23,4,2,14,1361,6,2,16,3,6,2,1,2,4,2214,6,110,6,6,9,792487,239]

  // This has a complexity linear to the value of the code. The
  // assumption is that looking up astral identifier characters is
  // rare.
  function isInAstralSet(code, set) {
    var pos = 0x10000
    for (var i = 0; i < set.length; i += 2) {
      pos += set[i]
      if (pos > code) return false
      pos += set[i + 1]
      if (pos >= code) return true
    }
  }

  // Test whether a given character code starts an identifier.

  function isIdentifierStart(code, astral) {
    if (code < 65) return code === 36
    if (code < 91) return true
    if (code < 97) return code === 95
    if (code < 123) return true
    if (code <= 0xffff) return code >= 0xaa && nonASCIIidentifierStart.test(String.fromCharCode(code))
    if (astral === false) return false
    return isInAstralSet(code, astralIdentifierStartCodes)
  }

  // Test whether a given character is part of an identifier.

  function isIdentifierChar(code, astral) {
    if (code < 48) return code === 36
    if (code < 58) return true
    if (code < 65) return false
    if (code < 91) return true
    if (code < 97) return code === 95
    if (code < 123) return true
    if (code <= 0xffff) return code >= 0xaa && nonASCIIidentifier.test(String.fromCharCode(code))
    if (astral === false) return false
    return isInAstralSet(code, astralIdentifierStartCodes) || isInAstralSet(code, astralIdentifierCodes)
  }

  // ## Token types

  // The assignment of fine-grained, information-carrying type objects
  // allows the tokenizer to store the information it has about a
  // token in a way that is very cheap for the parser to look up.

  // All token type variables start with an underscore, to make them
  // easy to recognize.

  // The `beforeExpr` property is used to disambiguate between regular
  // expressions and divisions. It is set on all token types that can
  // be followed by an expression (thus, a slash after them would be a
  // regular expression).
  //
  // The `startsExpr` property is used to check if the token ends a
  // `yield` expression. It is set on all token types that either can
  // directly start an expression (like a quotation mark) or can
  // continue an expression (like the body of a string).
  //
  // `isLoop` marks a keyword as starting a loop, which is important
  // to know when parsing a label, in order to allow or disallow
  // continue jumps to that label.

  var TokenType = function TokenType(label, conf) {
    if ( conf === void 0 ) conf = {};

    this.label = label
    this.keyword = conf.keyword
    this.beforeExpr = !!conf.beforeExpr
    this.startsExpr = !!conf.startsExpr
    this.isLoop = !!conf.isLoop
    this.isAssign = !!conf.isAssign
    this.prefix = !!conf.prefix
    this.postfix = !!conf.postfix
    this.binop = conf.binop || null
    this.updateContext = null
  };

  function binop(name, prec) {
    return new TokenType(name, {beforeExpr: true, binop: prec})
  }
  var beforeExpr = {beforeExpr: true};
  var startsExpr = {startsExpr: true};
  // Map keyword names to token types.

  var keywordTypes = {}

  // Succinct definitions of keyword token types
  function kw(name, options) {
    if ( options === void 0 ) options = {};

    options.keyword = name
    return keywordTypes[name] = new TokenType(name, options)
  }

  var tt = {
    num: new TokenType("num", startsExpr),
    regexp: new TokenType("regexp", startsExpr),
    string: new TokenType("string", startsExpr),
    name: new TokenType("name", startsExpr),
    eof: new TokenType("eof"),

    // Punctuation token types.
    bracketL: new TokenType("[", {beforeExpr: true, startsExpr: true}),
    bracketR: new TokenType("]"),
    braceL: new TokenType("{", {beforeExpr: true, startsExpr: true}),
    braceR: new TokenType("}"),
    parenL: new TokenType("(", {beforeExpr: true, startsExpr: true}),
    parenR: new TokenType(")"),
    comma: new TokenType(",", beforeExpr),
    semi: new TokenType(";", beforeExpr),
    colon: new TokenType(":", beforeExpr),
    dot: new TokenType("."),
    question: new TokenType("?", beforeExpr),
    arrow: new TokenType("=>", beforeExpr),
    template: new TokenType("template"),
    ellipsis: new TokenType("...", beforeExpr),
    backQuote: new TokenType("`", startsExpr),
    dollarBraceL: new TokenType("${", {beforeExpr: true, startsExpr: true}),

    // Operators. These carry several kinds of properties to help the
    // parser use them properly (the presence of these properties is
    // what categorizes them as operators).
    //
    // `binop`, when present, specifies that this operator is a binary
    // operator, and will refer to its precedence.
    //
    // `prefix` and `postfix` mark the operator as a prefix or postfix
    // unary operator.
    //
    // `isAssign` marks all of `=`, `+=`, `-=` etcetera, which act as
    // binary operators with a very low precedence, that should result
    // in AssignmentExpression nodes.

    eq: new TokenType("=", {beforeExpr: true, isAssign: true}),
    assign: new TokenType("_=", {beforeExpr: true, isAssign: true}),
    incDec: new TokenType("++/--", {prefix: true, postfix: true, startsExpr: true}),
    prefix: new TokenType("prefix", {beforeExpr: true, prefix: true, startsExpr: true}),
    logicalOR: binop("||", 1),
    logicalAND: binop("&&", 2),
    bitwiseOR: binop("|", 3),
    bitwiseXOR: binop("^", 4),
    bitwiseAND: binop("&", 5),
    equality: binop("==/!=", 6),
    relational: binop("</>", 7),
    bitShift: binop("<</>>", 8),
    plusMin: new TokenType("+/-", {beforeExpr: true, binop: 9, prefix: true, startsExpr: true}),
    modulo: binop("%", 10),
    star: binop("*", 10),
    slash: binop("/", 10),
    starstar: new TokenType("**", {beforeExpr: true}),

    // Keyword token types.
    _break: kw("break"),
    _case: kw("case", beforeExpr),
    _catch: kw("catch"),
    _continue: kw("continue"),
    _debugger: kw("debugger"),
    _default: kw("default", beforeExpr),
    _do: kw("do", {isLoop: true, beforeExpr: true}),
    _else: kw("else", beforeExpr),
    _finally: kw("finally"),
    _for: kw("for", {isLoop: true}),
    _function: kw("function", startsExpr),
    _if: kw("if"),
    _return: kw("return", beforeExpr),
    _switch: kw("switch"),
    _throw: kw("throw", beforeExpr),
    _try: kw("try"),
    _var: kw("var"),
    _const: kw("const"),
    _while: kw("while", {isLoop: true}),
    _with: kw("with"),
    _new: kw("new", {beforeExpr: true, startsExpr: true}),
    _this: kw("this", startsExpr),
    _super: kw("super", startsExpr),
    _class: kw("class"),
    _extends: kw("extends", beforeExpr),
    _export: kw("export"),
    _import: kw("import"),
    _null: kw("null", startsExpr),
    _true: kw("true", startsExpr),
    _false: kw("false", startsExpr),
    _in: kw("in", {beforeExpr: true, binop: 7}),
    _instanceof: kw("instanceof", {beforeExpr: true, binop: 7}),
    _typeof: kw("typeof", {beforeExpr: true, prefix: true, startsExpr: true}),
    _void: kw("void", {beforeExpr: true, prefix: true, startsExpr: true}),
    _delete: kw("delete", {beforeExpr: true, prefix: true, startsExpr: true})
  }

  // Matches a whole line break (where CRLF is considered a single
  // line break). Used to count lines.

  var lineBreak = /\r\n?|\n|\u2028|\u2029/
  var lineBreakG = new RegExp(lineBreak.source, "g")

  function isNewLine(code) {
    return code === 10 || code === 13 || code === 0x2028 || code === 0x2029
  }

  var nonASCIIwhitespace = /[\u1680\u180e\u2000-\u200a\u202f\u205f\u3000\ufeff]/

  var skipWhiteSpace = /(?:\s|\/\/.*|\/\*[^]*?\*\/)*/g

  function isArray(obj) {
    return Object.prototype.toString.call(obj) === "[object Array]"
  }

  // Checks if an object has a property.

  function has(obj, propName) {
    return Object.prototype.hasOwnProperty.call(obj, propName)
  }

  // These are used when `options.locations` is on, for the
  // `startLoc` and `endLoc` properties.

  var Position = function Position(line, col) {
    this.line = line
    this.column = col
  };

  Position.prototype.offset = function offset (n) {
    return new Position(this.line, this.column + n)
  };

  var SourceLocation = function SourceLocation(p, start, end) {
    this.start = start
    this.end = end
    if (p.sourceFile !== null) this.source = p.sourceFile
  };

  // The `getLineInfo` function is mostly useful when the
  // `locations` option is off (for performance reasons) and you
  // want to find the line/column position for a given character
  // offset. `input` should be the code string that the offset refers
  // into.

  function getLineInfo(input, offset) {
    for (var line = 1, cur = 0;;) {
      lineBreakG.lastIndex = cur
      var match = lineBreakG.exec(input)
      if (match && match.index < offset) {
        ++line
        cur = match.index + match[0].length
      } else {
        return new Position(line, offset - cur)
      }
    }
  }

  // A second optional argument can be given to further configure
  // the parser process. These options are recognized:

  var defaultOptions = {
    // `ecmaVersion` indicates the ECMAScript version to parse. Must
    // be either 3, 5, 6 (2015), 7 (2016), or 8 (2017). This influences support
    // for strict mode, the set of reserved words, and support for
    // new syntax features. The default is 7.
    ecmaVersion: 7,
    // `sourceType` indicates the mode the code should be parsed in.
    // Can be either `"script"` or `"module"`. This influences global
    // strict mode and parsing of `import` and `export` declarations.
    sourceType: "script",
    // `onInsertedSemicolon` can be a callback that will be called
    // when a semicolon is automatically inserted. It will be passed
    // th position of the comma as an offset, and if `locations` is
    // enabled, it is given the location as a `{line, column}` object
    // as second argument.
    onInsertedSemicolon: null,
    // `onTrailingComma` is similar to `onInsertedSemicolon`, but for
    // trailing commas.
    onTrailingComma: null,
    // By default, reserved words are only enforced if ecmaVersion >= 5.
    // Set `allowReserved` to a boolean value to explicitly turn this on
    // an off. When this option has the value "never", reserved words
    // and keywords can also not be used as property names.
    allowReserved: null,
    // When enabled, a return at the top level is not considered an
    // error.
    allowReturnOutsideFunction: false,
    // When enabled, import/export statements are not constrained to
    // appearing at the top of the program.
    allowImportExportEverywhere: false,
    // When enabled, hashbang directive in the beginning of file
    // is allowed and treated as a line comment.
    allowHashBang: false,
    // When `locations` is on, `loc` properties holding objects with
    // `start` and `end` properties in `{line, column}` form (with
    // line being 1-based and column 0-based) will be attached to the
    // nodes.
    locations: false,
    // A function can be passed as `onToken` option, which will
    // cause Acorn to call that function with object in the same
    // format as tokens returned from `tokenizer().getToken()`. Note
    // that you are not allowed to call the parser from the
    // callback—that will corrupt its internal state.
    onToken: null,
    // A function can be passed as `onComment` option, which will
    // cause Acorn to call that function with `(block, text, start,
    // end)` parameters whenever a comment is skipped. `block` is a
    // boolean indicating whether this is a block (`/* */`) comment,
    // `text` is the content of the comment, and `start` and `end` are
    // character offsets that denote the start and end of the comment.
    // When the `locations` option is on, two more parameters are
    // passed, the full `{line, column}` locations of the start and
    // end of the comments. Note that you are not allowed to call the
    // parser from the callback—that will corrupt its internal state.
    onComment: null,
    // Nodes have their start and end characters offsets recorded in
    // `start` and `end` properties (directly on the node, rather than
    // the `loc` object, which holds line/column data. To also add a
    // [semi-standardized][range] `range` property holding a `[start,
    // end]` array with the same numbers, set the `ranges` option to
    // `true`.
    //
    // [range]: https://bugzilla.mozilla.org/show_bug.cgi?id=745678
    ranges: false,
    // It is possible to parse multiple files into a single AST by
    // passing the tree produced by parsing the first file as
    // `program` option in subsequent parses. This will add the
    // toplevel forms of the parsed file to the `Program` (top) node
    // of an existing parse tree.
    program: null,
    // When `locations` is on, you can pass this to record the source
    // file in every node's `loc` object.
    sourceFile: null,
    // This value, if given, is stored in every node, whether
    // `locations` is on or off.
    directSourceFile: null,
    // When enabled, parenthesized expressions are represented by
    // (non-standard) ParenthesizedExpression nodes
    preserveParens: false,
    plugins: {}
  }

  // Interpret and default an options object

  function getOptions(opts) {
    var options = {}

    for (var opt in defaultOptions)
      options[opt] = opts && has(opts, opt) ? opts[opt] : defaultOptions[opt]

    if (options.ecmaVersion >= 2015)
      options.ecmaVersion -= 2009

    if (options.allowReserved == null)
      options.allowReserved = options.ecmaVersion < 5

    if (isArray(options.onToken)) {
      var tokens = options.onToken
      options.onToken = function (token) { return tokens.push(token); }
    }
    if (isArray(options.onComment))
      options.onComment = pushComment(options, options.onComment)

    return options
  }

  function pushComment(options, array) {
    return function (block, text, start, end, startLoc, endLoc) {
      var comment = {
        type: block ? 'Block' : 'Line',
        value: text,
        start: start,
        end: end
      }
      if (options.locations)
        comment.loc = new SourceLocation(this, startLoc, endLoc)
      if (options.ranges)
        comment.range = [start, end]
      array.push(comment)
    }
  }

  // Registered plugins
  var plugins = {}

  function keywordRegexp(words) {
    return new RegExp("^(" + words.replace(/ /g, "|") + ")$")
  }

  var Parser = function Parser(options, input, startPos) {
    this.options = options = getOptions(options)
    this.sourceFile = options.sourceFile
    this.keywords = keywordRegexp(keywords[options.ecmaVersion >= 6 ? 6 : 5])
    var reserved = ""
    if (!options.allowReserved) {
      for (var v = options.ecmaVersion;; v--)
        if (reserved = reservedWords[v]) break
      if (options.sourceType == "module") reserved += " await"
    }
    this.reservedWords = keywordRegexp(reserved)
    var reservedStrict = (reserved ? reserved + " " : "") + reservedWords.strict
    this.reservedWordsStrict = keywordRegexp(reservedStrict)
    this.reservedWordsStrictBind = keywordRegexp(reservedStrict + " " + reservedWords.strictBind)
    this.input = String(input)

    // Used to signal to callers of `readWord1` whether the word
    // contained any escape sequences. This is needed because words with
    // escape sequences must not be interpreted as keywords.
    this.containsEsc = false

    // Load plugins
    this.loadPlugins(options.plugins)

    // Set up token state

    // The current position of the tokenizer in the input.
    if (startPos) {
      this.pos = startPos
      this.lineStart = this.input.lastIndexOf("\n", startPos - 1) + 1
      this.curLine = this.input.slice(0, this.lineStart).split(lineBreak).length
    } else {
      this.pos = this.lineStart = 0
      this.curLine = 1
    }

    // Properties of the current token:
    // Its type
    this.type = tt.eof
    // For tokens that include more information than their type, the value
    this.value = null
    // Its start and end offset
    this.start = this.end = this.pos
    // And, if locations are used, the {line, column} object
    // corresponding to those offsets
    this.startLoc = this.endLoc = this.curPosition()

    // Position information for the previous token
    this.lastTokEndLoc = this.lastTokStartLoc = null
    this.lastTokStart = this.lastTokEnd = this.pos

    // The context stack is used to superficially track syntactic
    // context to predict whether a regular expression is allowed in a
    // given position.
    this.context = this.initialContext()
    this.exprAllowed = true

    // Figure out if it's a module code.
    this.strict = this.inModule = options.sourceType === "module"

    // Used to signify the start of a potential arrow function
    this.potentialArrowAt = -1

    // Flags to track whether we are in a function, a generator, an async function.
    this.inFunction = this.inGenerator = this.inAsync = false
    // Positions to delayed-check that yield/await does not exist in default parameters.
    this.yieldPos = this.awaitPos = 0
    // Labels in scope.
    this.labels = []

    // If enabled, skip leading hashbang line.
    if (this.pos === 0 && options.allowHashBang && this.input.slice(0, 2) === '#!')
      this.skipLineComment(2)
  };

  // DEPRECATED Kept for backwards compatibility until 3.0 in case a plugin uses them
  Parser.prototype.isKeyword = function isKeyword (word) { return this.keywords.test(word) };
  Parser.prototype.isReservedWord = function isReservedWord (word) { return this.reservedWords.test(word) };

  Parser.prototype.extend = function extend (name, f) {
    this[name] = f(this[name])
  };

  Parser.prototype.loadPlugins = function loadPlugins (pluginConfigs) {
      var this$1 = this;

    for (var name in pluginConfigs) {
      var plugin = plugins[name]
      if (!plugin) throw new Error("Plugin '" + name + "' not found")
      plugin(this$1, pluginConfigs[name])
    }
  };

  Parser.prototype.parse = function parse () {
    var node = this.options.program || this.startNode()
    this.nextToken()
    return this.parseTopLevel(node)
  };

  var pp = Parser.prototype

  // ## Parser utilities

  // Test whether a statement node is the string literal `"use strict"`.

  pp.isUseStrict = function(stmt) {
    return this.options.ecmaVersion >= 5 && stmt.type === "ExpressionStatement" &&
      stmt.expression.type === "Literal" &&
      stmt.expression.raw.slice(1, -1) === "use strict"
  }

  // Predicate that tests whether the next token is of the given
  // type, and if yes, consumes it as a side effect.

  pp.eat = function(type) {
    if (this.type === type) {
      this.next()
      return true
    } else {
      return false
    }
  }

  // Tests whether parsed token is a contextual keyword.

  pp.isContextual = function(name) {
    return this.type === tt.name && this.value === name
  }

  // Consumes contextual keywo