/*jshint curly:true, eqeqeq:true, laxbreak:true, noempty:false */
/*

  The MIT License (MIT)

  Copyright (c) 2007-2013 Einar Lielmanis and contributors.

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation files
  (the "Software"), to deal in the Software without restriction,
  including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so,
  subject to the following conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.

 JS Beautifier
---------------


  Written by Einar Lielmanis, <einar@jsbeautifier.org>
      http://jsbeautifier.org/

  Originally converted to javascript by Vital, <vital76@gmail.com>
  "End braces on own line" added by Chris J. Shull, <chrisjshull@gmail.com>
  Parsing improvements for brace-less statements by Liam Newman <bitwiseman@gmail.com>


  Usage:
    js_beautify(js_source_text);
    js_beautify(js_source_text, options);

  The options are:
    indent_size (default 4)          - indentation size,
    indent_char (default space)      - character to indent with,
    preserve_newlines (default true) - whether existing line breaks should be preserved,
    max_preserve_newlines (default unlimited) - maximum number of line breaks to be preserved in one chunk,

    jslint_happy (default false) - if true, then jslint-stricter mode is enforced.

            jslint_happy        !jslint_happy
            ---------------------------------
            function ()         function()

            switch () {         switch() {
            case 1:               case 1:
              break;                break;
            }                   }

    space_after_anon_function (default false) - should the space before an anonymous function's parens be added, "function()" vs "function ()",
          NOTE: This option is overriden by jslint_happy (i.e. if jslint_happy is true, space_after_anon_function is true by design)

    brace_style (default "collapse") - "collapse-preserve-inline" | "collapse" | "expand" | "end-expand" | "none"
            put braces on the same line as control statements (default), or put braces on own line (Allman / ANSI style), or just put end braces on own line, or attempt to keep them where they are.

    space_before_conditional (default true) - should the space before conditional statement be added, "if(true)" vs "if (true)",

    unescape_strings (default false) - should printable characters in strings encoded in \xNN notation be unescaped, "example" vs "\x65\x78\x61\x6d\x70\x6c\x65"

    wrap_line_length (default unlimited) - lines should wrap at next opportunity after this number of characters.
          NOTE: This is not a hard limit. Lines will continue until a point where a newline would
                be preserved if it were present.

    end_with_newline (default false)  - end output with a newline


    e.g

    js_beautify(js_source_text, {
      'indent_size': 1,
      'indent_char': '\t'
    });

*/

// Object.values polyfill found here:
// http://tokenposts.blogspot.com.au/2012/04/javascript-objectkeys-browser.html
if (!Object.values) {
    Object.values = function(o) {
        if (o !== Object(o)) {
            throw new TypeError('Object.values called on a non-object');
        }
        var k = [],
            p;
        for (p in o) {
            if (Object.prototype.hasOwnProperty.call(o, p)) {
                k.push(o[p]);
            }
        }
        return k;
    };
}

(function() {

    var acorn = {};
    (function(exports) {
        /* jshint curly: false */
        // This section of code is taken from acorn.
        //
        // Acorn was written by Marijn Haverbeke and released under an MIT
        // license. The Unicode regexps (for identifiers and whitespace) were
        // taken from [Esprima](http://esprima.org) by Ariya Hidayat.
        //
        // Git repositories for Acorn are available at
        //
        //     http://marijnhaverbeke.nl/git/acorn
        //     https://github.com/marijnh/acorn.git

        // ## 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.

        var nonASCIIwhitespace = /[\u1680\u180e\u2000-\u200a\u202f\u205f\u3000\ufeff]/; // jshint ignore:line
        var nonASCIIidentifierStartChars = "\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u0527\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\u08a2-\u08ac\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097f\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\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-\u0c33\u0c35-\u0c39\u0c3d\u0c58\u0c59\u0c60\u0c61\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d60\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-\u13f4\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f0\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1877\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191c\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19c1-\u19c7\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\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\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\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\u2e2f\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fcc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua697\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua78e\ua790-\ua793\ua7a0-\ua7aa\ua7f8-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa80-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uabc0-\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 = "\u0300-\u036f\u0483-\u0487\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u0620-\u0649\u0672-\u06d3\u06e7-\u06e8\u06fb-\u06fc\u0730-\u074a\u0800-\u0814\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0840-\u0857\u08e4-\u08fe\u0900-\u0903\u093a-\u093c\u093e-\u094f\u0951-\u0957\u0962-\u0963\u0966-\u096f\u0981-\u0983\u09bc\u09be-\u09c4\u09c7\u09c8\u09d7\u09df-\u09e0\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\u0b5f-\u0b60\u0b66-\u0b6f\u0b82\u0bbe-\u0bc2\u0bc6-\u0bc8\u0bca-\u0bcd\u0bd7\u0be6-\u0bef\u0c01-\u0c03\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62-\u0c63\u0c66-\u0c6f\u0c82\u0c83\u0cbc\u0cbe-\u0cc4\u0cc6-\u0cc8\u0cca-\u0ccd\u0cd5\u0cd6\u0ce2-\u0ce3\u0ce6-\u0cef\u0d02\u0d03\u0d46-\u0d48\u0d57\u0d62-\u0d63\u0d66-\u0d6f\u0d82\u0d83\u0dca\u0dcf-\u0dd4\u0dd6\u0dd8-\u0ddf\u0df2\u0df3\u0e34-\u0e3a\u0e40-\u0e45\u0e50-\u0e59\u0eb4-\u0eb9\u0ec8-\u0ecd\u0ed0-\u0ed9\u0f18\u0f19\u0f20-\u0f29\u0f35\u0f37\u0f39\u0f41-\u0f47\u0f71-\u0f84\u0f86-\u0f87\u0f8d-\u0f97\u0f99-\u0fbc\u0fc6\u1000-\u1029\u1040-\u1049\u1067-\u106d\u1071-\u1074\u1082-\u108d\u108f-\u109d\u135d-\u135f\u170e-\u1710\u1720-\u1730\u1740-\u1750\u1772\u1773\u1780-\u17b2\u17dd\u17e0-\u17e9\u180b-\u180d\u1810-\u1819\u1920-\u192b\u1930-\u193b\u1951-\u196d\u19b0-\u19c0\u19c8-\u19c9\u19d0-\u19d9\u1a00-\u1a15\u1a20-\u1a53\u1a60-\u1a7c\u1a7f-\u1a89\u1a90-\u1a99\u1b46-\u1b4b\u1b50-\u1b59\u1b6b-\u1b73\u1bb0-\u1bb9\u1be6-\u1bf3\u1c00-\u1c22\u1c40-\u1c49\u1c5b-\u1c7d\u1cd0-\u1cd2\u1d00-\u1dbe\u1e01-\u1f15\u200c\u200d\u203f\u2040\u2054\u20d0-\u20dc\u20e1\u20e5-\u20f0\u2d81-\u2d96\u2de0-\u2dff\u3021-\u3028\u3099\u309a\ua640-\ua66d\ua674-\ua67d\ua69f\ua6f0-\ua6f1\ua7f8-\ua800\ua806\ua80b\ua823-\ua827\ua880-\ua881\ua8b4-\ua8c4\ua8d0-\ua8d9\ua8f3-\ua8f7\ua900-\ua909\ua926-\ua92d\ua930-\ua945\ua980-\ua983\ua9b3-\ua9c0\uaa00-\uaa27\uaa40-\uaa41\uaa4c-\uaa4d\uaa50-\uaa59\uaa7b\uaae0-\uaae9\uaaf2-\uaaf3\uabc0-\uabe1\uabec\uabed\uabf0-\uabf9\ufb20-\ufb28\ufe00-\ufe0f\ufe20-\ufe26\ufe33\ufe34\ufe4d-\ufe4f\uff10-\uff19\uff3f";
        var nonASCIIidentifierStart = new RegExp("[" + nonASCIIidentifierStartChars + "]");
        var nonASCIIidentifier = new RegExp("[" + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "]");

        // Whether a single character denotes a newline.

        exports.newline = /[\n\r\u2028\u2029]/;

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

        // in javascript, these two differ
        // in python they are the same, different methods are called on them
        exports.lineBreak = new RegExp('\r\n|' + exports.newline.source);
        exports.allLineBreaks = new RegExp(exports.lineBreak.source, 'g');


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

        exports.isIdentifierStart = function(code) {
            // permit $ (36) and @ (64). @ is used in ES7 decorators.
            if (code < 65) return code === 36 || code === 64;
            // 65 through 91 are uppercase letters.
            if (code < 91) return true;
            // permit _ (95).
            if (code < 97) return code === 95;
            // 97 through 123 are lowercase letters.
            if (code < 123) return true;
            return code >= 0xaa && nonASCIIidentifierStart.test(String.fromCharCode(code));
        };

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

        exports.isIdentifierChar = function(code) {
            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;
            return code >= 0xaa && nonASCIIidentifier.test(String.fromCharCode(code));
        };
    })(acorn);
    /* jshint curly: true */

    function in_array(what, arr) {
        for (var i = 0; i < arr.length; i += 1) {
            if (arr[i] === what) {
                return true;
            }
        }
        return false;
    }

    function trim(s) {
        return s.replace(/^\s+|\s+$/g, '');
    }

    function ltrim(s) {
        return s.replace(/^\s+/g, '');
    }

    // function rtrim(s) {
    //     return s.replace(/\s+$/g, '');
    // }

    function js_beautify(js_source_text, options) {
        "use strict";
        var beautifier = new Beautifier(js_source_text, options);
        return beautifier.beautify();
    }

    function sanitizeOperatorPosition(opPosition) {
        opPosition = opPosition || OPERATOR_POSITION.before_newline;

        var validPositionValues = Object.values(OPERATOR_POSITION);

        if (!in_array(opPosition, validPositionValues)) {
            throw new Error("Invalid Option Value: The option 'operator_position' must be one of the following values\n" +
                validPositionValues +
                "\nYou passed in: '" + opPosition + "'");
        }

        return opPosition;
    }

    var OPERATOR_POSITION = {
        before_newline: 'before-newline',
        after_newline: 'after-newline',
        preserve_newline: 'preserve-newline',
    };

    var OPERATOR_POSITION_BEFORE_OR_PRESERVE = [OPERATOR_POSITION.before_newline, OPERATOR_POSITION.preserve_newline];

    var MODE = {
        BlockStatement: 'BlockStatement', // 'BLOCK'
        Statement: 'Statement', // 'STATEMENT'
        ObjectLiteral: 'ObjectLiteral', // 'OBJECT',
        ArrayLiteral: 'ArrayLiteral', //'[EXPRESSION]',
        ForInitializer: 'ForInitializer', //'(FOR-EXPRESSION)',
        Conditional: 'Conditional', //'(COND-EXPRESSION)',
        Expression: 'Expression' //'(EXPRESSION)'
    };

    function Beautifier(js_source_text, options) {
        "use strict";
        var output;
        var tokens = [],
            token_pos;
        var Tokenizer;
        var current_token;
        var last_type, last_last_text, indent_string;
        var flags, previous_flags, flag_store;
        var prefix;

        var handlers, opt;
        var baseIndentString = '';

        handlers = {
            'TK_START_EXPR': handle_start_expr,
            'TK_END_EXPR': handle_end_expr,
            'TK_START_BLOCK': handle_start_block,
            'TK_END_BLOCK': handle_end_block,
            'TK_WORD': handle_word,
            'TK_RESERVED': handle_word,
            'TK_SEMICOLON': handle_semicolon,
            'TK_STRING': handle_string,
            'TK_EQUALS': handle_equals,
            'TK_OPERATOR': handle_operator,
            'TK_COMMA': handle_comma,
            'TK_BLOCK_COMMENT': handle_block_comment,
            'TK_COMMENT': handle_comment,
            'TK_DOT': handle_dot,
            'TK_UNKNOWN': handle_unknown,
            'TK_EOF': handle_eof
        };

        function create_flags(flags_base, mode) {
            var next_indent_level = 0;
            if (flags_base) {
                next_indent_level = flags_base.indentation_level;
                if (!output.just_added_newline() &&
                    flags_base.line_indent_level > next_indent_level) {
                    next_indent_level = flags_base.line_indent_level;
                }
            }

            var next_flags = {
                mode: mode,
                parent: flags_base,
                last_text: flags_base ? flags_base.last_text : '', // last token text
                last_word: flags_base ? flags_base.last_word : '', // last 'TK_WORD' passed
                declaration_statement: false,
                declaration_assignment: false,
                multiline_frame: false,
                inline_frame: false,
                if_block: false,
                else_block: false,
                do_block: false,
                do_while: false,
                import_block: false,
                in_case_statement: false, // switch(..){ INSIDE HERE }
                in_case: false, // we're on the exact line with "case 0:"
                case_body: false, // the indented case-action block
                indentation_level: next_indent_level,
                line_indent_level: flags_base ? flags_base.line_indent_level : next_indent_level,
                start_line_index: output.get_line_number(),
                ternary_depth: 0
            };
            return next_flags;
        }

        // Some interpreters have unexpected results with foo = baz || bar;
        options = options ? options : {};
        opt = {};

        // compatibility
        if (options.braces_on_own_line !== undefined) { //graceful handling of deprecated option
            opt.brace_style = options.braces_on_own_line ? "expand" : "collapse";
        }
        opt.brace_style = options.brace_style ? options.brace_style : (opt.brace_style ? opt.brace_style : "collapse");

        // graceful handling of deprecated option
        if (opt.brace_style === "expand-strict") {
            opt.brace_style = "expand";
        }

        opt.indent_size = options.indent_size ? parseInt(options.indent_size, 10) : 4;
        opt.indent_char = options.indent_char ? options.indent_char : ' ';
        opt.eol = options.eol ? options.eol : 'auto';
        opt.preserve_newlines = (options.preserve_newlines === undefined) ? true : options.preserve_newlines;
        opt.break_chained_methods = (options.break_chained_methods === undefined) ? false : options.break_chained_methods;
        opt.max_preserve_newlines = (options.max_preserve_newlines === undefined) ? 0 : parseInt(options.max_preserve_newlines, 10);
        opt.space_in_paren = (options.space_in_paren === undefined) ? false : options.space_in_paren;
        opt.space_in_empty_paren = (options.space_in_empty_paren === undefined) ? false : options.space_in_empty_paren;
        opt.jslint_happy = (options.jslint_happy === undefined) ? false : options.jslint_happy;
        opt.space_after_anon_function = (options.space_after_anon_function === undefined) ? false : options.space_after_anon_function;
        opt.keep_array_indentation = (options.keep_array_indentation === undefined) ? false : options.keep_array_indentation;
        opt.space_before_conditional = (options.space_before_conditional === undefined) ? true : options.space_before_conditional;
        opt.unescape_strings = (options.unescape_strings === undefined) ? false : options.unescape_strings;
        opt.wrap_line_length = (options.wrap_line_length === undefined) ? 0 : parseInt(options.wrap_line_length, 10);
        opt.e4x = (options.e4x === undefined) ? false : options.e4x;
        opt.end_with_newline = (options.end_with_newline === undefined) ? false : options.end_with_newline;
        opt.comma_first = (options.comma_first === undefined) ? false : options.comma_first;
        opt.operator_position = sanitizeOperatorPosition(options.operator_position);

        // For testing of beautify ignore:start directive
        opt.test_output_raw = (options.test_output_raw === undefined) ? false : options.test_output_raw;

        // force opt.space_after_anon_function to true if opt.jslint_happy
        if (opt.jslint_happy) {
            opt.space_after_anon_function = true;
        }

        if (options.indent_with_tabs) {
            opt.indent_char = '\t';
            opt.indent_size = 1;
        }

        if (opt.eol === 'auto') {
            opt.eol = '\n';
            if (js_source_text && acorn.lineBreak.test(js_source_text || '')) {
                opt.eol = js_source_text.match(acorn.lineBreak)[0];
            }
        }

        opt.eol = opt.eol.replace(/\\r/, '\r').replace(/\\n/, '\n');

        //----------------------------------
        indent_string = '';
        while (opt.indent_size > 0) {
            indent_string += opt.indent_char;
            opt.indent_size -= 1;
        }

        var preindent_index = 0;
        if (js_source_text && js_source_text.length) {
            while ((js_source_text.charAt(preindent_index) === ' ' ||
                    js_source_text.charAt(preindent_index) === '\t')) {
                baseIndentString += js_source_text.charAt(preindent_index);
                preindent_index += 1;
            }
            js_source_text = js_source_text.substring(preindent_index);
        }

        last_type = 'TK_START_BLOCK'; // last token type
        last_last_text = ''; // pre-last token text
        output = new Output(indent_string, baseIndentString);

        // If testing the ignore directive, start with output disable set to true
        output.raw = opt.test_output_raw;


        // Stack of parsing/formatting states, including MODE.
        // We tokenize, parse, and output in an almost purely a forward-only stream of token input
        // and formatted output.  This makes the beautifier less accurate than full parsers
        // but also far more tolerant of syntax errors.
        //
        // For example, the default mode is MODE.BlockStatement. If we see a '{' we push a new frame of type
        // MODE.BlockStatement on the the stack, even though it could be object literal.  If we later
        // encounter a ":", we'll switch to to MODE.ObjectLiteral.  If we then see a ";",
        // most full parsers would die, but the beautifier gracefully falls back to
        // MODE.BlockStatement and continues on.
        flag_store = [];
        set_mode(MODE.BlockStatement);

        this.beautify = function() {

            /*jshint onevar:true */
            var local_token, sweet_code;
            Tokenizer = new tokenizer(js_source_text, opt, indent_string);
            tokens = Tokenizer.tokenize();
            token_pos = 0;

            function get_local_token() {
                local_token = get_token();
                return local_token;
            }

            while (get_local_token()) {
                for (var i = 0; i < local_token.comments_before.length; i++) {
                    // The cleanest handling of inline comments is to treat them as though they aren't there.
                    // Just continue formatting and the behavior should be logical.
                    // Also ignore unknown tokens.  Again, this should result in better behavior.
                    handle_token(local_token.comments_before[i]);
                }
                handle_token(local_token);

                last_last_text = flags.last_text;
                last_type = local_token.type;
                flags.last_text = local_token.text;

                token_pos += 1;
            }

            sweet_code = output.get_code();
            if (opt.end_with_newline) {
                sweet_code += '\n';
            }

            if (opt.eol !== '\n') {
                sweet_code = sweet_code.replace(/[\n]/g, opt.eol);
            }

            return sweet_code;
        };

        function handle_token(local_token) {
            var newlines = local_token.newlines;
            var keep_whitespace = opt.keep_array_indentation && is_array(flags.mode);

            if (keep_whitespace) {
                for (var i = 0; i < newlines; i += 1) {
                    print_newline(i > 0);
                }
            } else {
                if (opt.max_preserve_newlines && newlines > opt.max_preserve_newlines) {
                    newlines = opt.max_preserve_newlines;
                }

                if (opt.preserve_newlines) {
                    if (local_token.newlines > 1) {
                        print_newline();
                        for (var j = 1; j < newlines; j += 1) {
                            print_newline(true);
                        }
                    }
                }
            }

            current_token = local_token;
            handlers[current_token.type]();
        }

        // we could use just string.split, but
        // IE doesn't like returning empty strings
        function split_linebreaks(s) {
            //return s.split(/\x0d\x0a|\x0a/);

            s = s.replace(acorn.allLineBreaks, '\n');
            var out = [],
                idx = s.indexOf("\n");
            while (idx !== -1) {
                out.push(s.substring(0, idx));
                s = s.substring(idx + 1);
                idx = s.indexOf("\n");
            }
            if (s.length) {
                out.push(s);
            }
            return out;
        }

        var newline_restricted_tokens = ['break', 'contiue', 'return', 'throw'];

        function allow_wrap_or_preserved_newline(force_linewrap) {
            force_linewrap = (force_linewrap === undefined) ? false : force_linewrap;

            // Never wrap the first token on a line
            if (output.just_added_newline()) {
                return;
            }

            var shouldPreserveOrForce = (opt.preserve_newlines && current_token.wanted_newline) || force_linewrap;
            var operatorLogicApplies = in_array(flags.last_text, Tokenizer.positionable_operators) || in_array(current_token.text, Tokenizer.positionable_operators);

            if (operatorLogicApplies) {
                var shouldPrintOperatorNewline = (
                        in_array(flags.last_text, Tokenizer.positionable_operators) &&
                        in_array(opt.operator_position, OPERATOR_POSITION_BEFORE_OR_PRESERVE)
                    ) ||
                    in_array(current_token.text, Tokenizer.positionable_operators);
                shouldPreserveOrForce = shouldPreserveOrForce && shouldPrintOperatorNewline;
            }

            if (shouldPreserveOrForce) {
                print_newline(false, true);
            } else if (opt.wrap_line_length) {
                if (last_type === 'TK_RESERVED' && in_array(flags.last_text, newline_restricted_tokens)) {
                    // These tokens should never have a newline inserted
                    // between them and the following expression.
                    return;
                }
                var proposed_line_length = output.current_line.get_character_count() + current_token.text.length +
                    (output.space_before_token ? 1 : 0);
                if (proposed_line_length >= opt.wrap_line_length) {
                    print_newline(false, true);
                }
            }
        }

        function print_newline(force_newline, preserve_statement_flags) {
            if (!preserve_statement_flags) {
                if (flags.last_text !== ';' && flags.last_text !== ',' && flags.last_text !== '=' && last_type !== 'TK_OPERATOR') {
                    while (flags.mode === MODE.Statement && !flags.if_block && !flags.do_block) {
                        restore_mode();
                    }
                }
            }

            if (output.add_new_line(force_newline)) {
                flags.multiline_frame = true;
            }
        }

        function print_token_line_indentation() {
            if (output.just_added_newline()) {
                if (opt.keep_array_indentation && is_array(flags.mode) && current_token.wanted_newline) {
                    output.current_line.push(current_token.whitespace_before);
                    output.space_before_token = false;
                } else if (output.set_indent(flags.indentation_level)) {
                    flags.line_indent_level = flags.indentation_level;
                }
            }
        }

        function print_token(printable_token) {
            if (output.raw) {
                output.add_raw_token(current_token);
                return;
            }

            if (opt.comma_first && last_type === 'TK_COMMA' &&
                output.just_added_newline()) {
                if (output.previous_line.last() === ',') {
                    var popped = output.previous_line.pop();
                    // if the comma was already at the start of the line,
                    // pull back onto that line and reprint the indentation
                    if (output.previous_line.is_empty()) {
                        output.previous_line.push(popped);
                        output.trim(true);
                        output.current_line.pop();
                        output.trim();
                    }

                    // add the comma in front of the next token
                    print_token_line_indentation();
                    output.add_token(',');
                    output.space_before_token = true;
                }
            }

            printable_token = printable_token || current_token.text;
            print_token_line_indentation();
            output.add_token(printable_token);
        }

        function indent() {
            flags.indentation_level += 1;
        }

        function deindent() {
            if (flags.indentation_level > 0 &&
                ((!flags.parent) || flags.indentation_level > flags.parent.indentation_level)) {
                flags.indentation_level -= 1;

            }
        }

        function set_mode(mode) {
            if (flags) {
                flag_store.push(flags);
                previous_flags = flags;
            } else {
                previous_flags = create_flags(null, mode);
            }

            flags = create_flags(previous_flags, mode);
        }

        function is_array(mode) {
            return mode === MODE.ArrayLiteral;
        }

        function is_expression(mode) {
            return in_array(mode, [MODE.Expression, MODE.ForInitializer, MODE.Conditional]);
        }

        function restore_mode() {
            if (flag_store.length > 0) {
                previous_flags = flags;
                flags = flag_store.pop();
                if (previous_flags.mode === MODE.Statement) {
                    output.remove_redundant_indentation(previous_flags);
                }
            }
        }

        function start_of_object_property() {
            return flags.parent.mode === MODE.ObjectLiteral && flags.mode === MODE.Statement && (
                (flags.last_text === ':' && flags.ternary_depth === 0) || (last_type === 'TK_RESERVED' && in_array(flags.last_text, ['get', 'set'])));
        }

        function start_of_statement() {
            if (
                (last_type === 'TK_RESERVED' && in_array(flags.last_text, ['var', 'let', 'const']) && current_token.type === 'TK_WORD') ||
                (last_type === 'TK_RESERVED' && flags.last_text === 'do') ||
                (last_type === 'TK_RESERVED' && in_array(flags.last_text, ['return', 'throw']) && !current_token.wanted_newline) ||
                (last_type === 'TK_RESERVED' && flags.last_text === 'else' && !(current_token.type === 'TK_RESERVED' && current_token.text === 'if')) ||
                (last_type === 'TK_END_EXPR' && (previous_flags.mode === MODE.ForInitializer || previous_flags.mode === MODE.Conditional)) ||
                (last_type === 'TK_WORD' && flags.mode === MODE.BlockStatement &&
                    !flags.in_case &&
                    !(current_token.text === '--' || current_token.text === '++') &&
                    last_last_text !== 'function' &&
                    current_token.type !== 'TK_WORD' && current_token.type !== 'TK_RESERVED') ||
                (flags.mode === MODE.ObjectLiteral && (
                    (flags.last_text === ':' && flags.ternary_depth === 0) || (last_type === 'TK_RESERVED' && in_array(flags.last_text, ['get', 'set']))))
            ) {

                set_mode(MODE.Statement);
                indent();

                if (last_type === 'TK_RESERVED' && in_array(flags.last_text, ['var', 'let', 'const']) && current_token.type === 'TK_WORD') {
                    flags.declaration_statement = true;
                }

                // Issue #276:
                // If starting a new statement with [if, for, while, do], push to a new line.
                // if (a) if (b) if(c) d(); else e(); else f();
                if (!start_of_object_property()) {
                    allow_wrap_or_preserved_newline(
                        current_token.type === 'TK_RESERVED' && in_array(current_token.text, ['do', 'for', 'if', 'while']));
                }

                return true;
            }
            return false;
        }

        function all_lines_start_with(lines, c) {
            for (var i = 0; i < lines.length; i++) {
                var line = trim(lines[i]);
                if (line.charAt(0) !== c) {
                    return false;
                }
            }
            return true;
        }

        function each_line_matches_indent(lines, indent) {
            var i = 0,
                len = lines.length,
                line;
            for (; i < len; i++) {
                line = lines[i];
                // allow empty lines to pass through
                if (line && line.indexOf(indent) !== 0) {
                    return false;
                }
            }
            return true;
        }

        function is_special_word(word) {
            return in_array(word, ['case', 'return', 'do', 'if', 'throw', 'else']);
        }

        function get_token(offset) {
            var index = token_pos + (offset || 0);
            return (index < 0 || index >= tokens.length) ? null : tokens[index];
        }

        function handle_start_expr() {
            if (start_of_statement()) {
                // The conditional starts the statement if appropriate.
            }

            var next_mode = MODE.Expression;
            if (current_token.text === '[') {

                if (last_type === 'TK_WORD' || flags.last_text === ')') {
                    // this is array index specifier, break immediately
                    // a[x], fn()[x]
                    if (last_type === 'TK_RESERVED' && in_array(flags.last_text, Tokenizer.line_starters)) {
                        output.space_before_token = true;
                    }
                    set_mode(next_mode);
                    print_token();
                    indent();
                    if (opt.space_in_paren) {
                        output.space_before_token = true;
                    }
                    return;
                }

                next_mode = MODE.ArrayLiteral;
                if (is_array(flags.mode)) {
                    if (flags.last_text === '[' ||
                        (flags.last_text === ',' && (last_last_text === ']' || last_last_text === '}'))) {
                        // ], [ goes to new line
                        // }, [ goes to new line
                        if (!opt.keep_array_indentation) {
                            print_newline();
                        }
                    }
                }

            } else {
                if (last_type === 'TK_RESERVED' && flags.last_text === 'for') {
                    next_mode = MODE.ForInitializer;
                } else if (last_type === 'TK_RESERVED' && in_array(flags.last_text, ['if', 'while'])) {
                    next_mode = MODE.Conditional;
                } else {
                    // next_mode = MODE.Expression;
                }
            }

            if (flags.last_text === ';' || last_type === 'TK_START_BLOCK') {
                print_newline();
            } else if (last_type === 'TK_END_EXPR' || last_type === 'TK_START_EXPR' || last_type === 'TK_END_BLOCK' || flags.last_text === '.') {
                // TODO: Consider whether forcing this is required.  Review failing tests when removed.
                allow_wrap_or_preserved_newline(current_token.wanted_newline);
                // do nothing on (( and )( and ][ and ]( and .(
            } else if (!(last_type === 'TK_RESERVED' && current_token.text === '(') && last_type !== 'TK_WORD' && last_type !== 'TK_OPERATOR') {
                output.space_before_token = true;
            } else if ((last_type === 'TK_RESERVED' && (flags.last_word === 'function' || flags.last_word === 'typeof')) ||
                (flags.last_text === '*' && last_last_text === 'function')) {
                // function() vs function ()
                if (opt.space_after_anon_function) {
                    output.space_before_token = true;
                }
            } else if (last_type === 'TK_RESERVED' && (in_array(flags.last_text, Tokenizer.line_starters) || flags.last_text === 'catch')) {
                if (opt.space_before_conditional) {
                    output.space_before_token = true;
                }
            }

            // Should be a space between await and an IIFE
            if (current_token.text === '(' && last_type === 'TK_RESERVED' && flags.last_word === 'await') {
                output.space_before_token = true;
            }

            // Support of this kind of newline preservation.
            // a = (b &&
            //     (c || d));
            if (current_token.text === '(') {
                if (last_type === 'TK_EQUALS' || last_type === 'TK_OPERATOR') {
                    if (!start_of_object_property()) {
                        allow_wrap_or_preserved_newline();
                    }
                }
            }

            // Support preserving wrapped arrow function expressions
            // a.b('c',
            //     () => d.e
            // )
            if (current_token.text === '(' && last_type !== 'TK_WORD' && last_type !== 'TK_RESERVED') {
                allow_wrap_or_preserved_newline();
            }

            set_mode(next_mode);
            print_token();
            if (opt.space_in_paren) {
                output.space_before_token = true;
            }

            // In all cases, if we newline while inside an expression it should be indented.
            indent();
        }

        function handle_end_expr() {
            // statements inside expressions are not valid syntax, but...
            // statements must all be closed when their container closes
            while (flags.mode === MODE.Statement) {
                restore_mode();
            }

            if (flags.multiline_frame) {
                allow_wrap_or_preserved_newline(current_token.text === ']' && is_array(flags.mode) && !opt.keep_array_indentation);
            }

            if (opt.space_in_paren) {
                if (last_type === 'TK_START_EXPR' && !opt.space_in_empty_paren) {
                    // () [] no inner space in empty parens like these, ever, ref #320
                    output.trim();
                    output.space_before_token = false;
                } else {
                    output.space_before_token = true;
                }
            }
            if (current_token.text === ']' && opt.keep_array_indentation) {
                print_token();
                restore_mode();
            } else {
                restore_mode();
                print_token();
            }
            output.remove_redundant_indentation(previous_flags);

            // do {} while () // no statement required after
            if (flags.do_while && previous_flags.mode === MODE.Conditional) {
                previous_flags.mode = MODE.Expression;
                flags.do_block = false;
                flags.do_while = false;

            }
        }

        function handle_start_block() {
            // Check if this is should be treated as a ObjectLiteral
            var next_token = get_token(1);
            var second_token = get_token(2);
            if (second_token && (
                    (in_array(second_token.text, [':', ',']) && in_array(next_token.type, ['TK_STRING', 'TK_WORD', 'TK_RESERVED'])) ||
                    (in_array(next_token.text, ['get', 'set']) && in_array(second_token.type, ['TK_WORD', 'TK_RESERVED']))
                )) {
                // We don't support TypeScript,but we didn't break it for a very long time.
                // We'll try to keep not breaking it.
                if (!in_array(last_last_text, ['class', 'interface'])) {
                    set_mode(MODE.ObjectLiteral);
                } else {
                    set_mode(MODE.BlockStatement);
                }
            } else if (last_type === 'TK_OPERATOR' && flags.last_text === '=>') {
                // arrow function: (param1, paramN) => { statements }
                set_mode(MODE.BlockStatement);
            } else if (in_array(last_type, ['TK_EQUALS', 'TK_START_EXPR', 'TK_COMMA', 'TK_OPERATOR']) ||
                (last_type === 'TK_RESERVED' && in_array(flags.last_text, ['return', 'throw', 'import']))
            ) {
                // Detecting shorthand function syntax is difficult by scanning forward,
                //     so check the surrounding context.
                // If the block is being returned, imported, passed as arg,
                //     assigned with = or assigned in a nested object, treat as an ObjectLiteral.
                set_mode(MODE.ObjectLiteral);
            } else {
                set_mode(MODE.BlockStatement);
            }

            var empty_braces = !next_token.comments_before.length && next_token.text === '}';
            var empty_anonymous_function = empty_braces && flags.last_word === 'function' &&
                last_type === 'TK_END_EXPR';


            if (opt.brace_style === "expand" ||
                (opt.brace_style === "none" && current_token.wanted_newline)) {
                if (last_type !== 'TK_OPERATOR' &&
                    (empty_anonymous_function ||
                        last_type === 'TK_EQUALS' ||
                        (last_type === 'TK_RESERVED' && is_special_word(flags.last_text) && flags.last_text !== 'else'))) {
                    output.space_before_token = true;
                } else {
                    print_newline(false, true);
                }
            } else { // collapse
                if (opt.brace_style === 'collapse-preserve-inline') {
                    // search forward for a newline wanted inside this block
                    var index = 0;
                    var check_token = null;
                    flags.inline_frame = true;
                    do {
                        index += 1;
                        check_token = get_token(index);
                        if (check_token.wanted_newline) {
                            flags.inline_frame = false;
                            break;
                        }
                    } while (check_token.type !== 'TK_EOF' &&
                        !(check_token.type === 'TK_END_BLOCK' && check_token.opened === current_token));
                }

                if (is_array(previous_flags.mode) && (last_type === 'TK_START_EXPR' || last_type === 'TK_COMMA')) {
                    // if we're preserving inline,
                    // allow newline between comma and next brace.
                    if (last_type === 'TK_COMMA' || opt.space_in_paren) {
                        output.space_before_token = true;
                    }

                    if (opt.brace_style === 'collapse-preserve-inline' &&
                        (last_type === 'TK_COMMA' || (last_type === 'TK_START_EXPR' && flags.inline_frame))) {
                        allow_wrap_or_preserved_newline();
                        previous_flags.multiline_frame = previous_flags.multiline_frame || flags.multiline_frame;
                        flags.multiline_frame = false;
                    }
                } else if (last_type !== 'TK_OPERATOR' && last_type !== 'TK_START_EXPR') {
                    if (last_type === 'TK_START_BLOCK') {
                        print_newline();
                    } else {
                        output.space_before_token = true;
                    }
                }
            }
            print_token();
            indent();
        }

        function handle_end_block() {
            // statements must all be closed when their container closes
            while (flags.mode === MODE.Statement) {
                restore_mode();
            }
            var empty_braces = last_type === 'TK_START_BLOCK';

            if (opt.brace_style === "expand") {
                if (!empty_braces) {
                    print_newline();
                }
            } else {
                // skip {}
                if (!empty_braces) {
                    if (flags.inline_frame) {
                        output.space_before_token = true;
                    } else if (is_array(flags.mode) && opt.keep_array_indentation) {
                        // we REALLY need a newline here, but newliner would skip that
                        opt.keep_array_indentation = false;
                        print_newline();
                        opt.keep_array_indentation = true;

                    } else {
                        print_newline();
                    }
                }
            }
            restore_mode();
            print_token();
        }

        function handle_word() {
            if (current_token.type === 'TK_RESERVED') {
                if (in_array(current_token.text, ['set', 'get']) && flags.mode !== MODE.ObjectLiteral) {
                    current_token.type = 'TK_WORD';
                } else if (in_array(current_token.text, ['as', 'from']) && !flags.import_block) {
                    current_token.type = 'TK_WORD';
                } else if (flags.mode === MODE.ObjectLiteral) {
                    var next_token = get_token(1);
                    if (next_token.text === ':') {
                        current_token.type = 'TK_WORD';
                    }
                }
            }

            if (start_of_statement()) {
                // The conditional starts the statement if appropriate.
            } else if (current_token.wanted_newline && !is_expression(flags.mode) &&
                (last_type !== 'TK_OPERATOR' || (flags.last_text === '--' || flags.last_text === '++')) &&
                last_type !== 'TK_EQUALS' &&
                (opt.preserve_newlines || !(last_type === 'TK_RESERVED' && in_array(flags.last_text, ['var', 'let', 'const', 'set', 'get'])))) {

                print_newline();
            }

            if (flags.do_block && !flags.do_while) {
                if (current_token.type === 'TK_RESERVED' && current_token.text === 'while') {
                    // do {} ## while ()
                    output.space_before_token = true;
                    print_token();
                    output.space_before_token = true;
                    flags.do_while = true;
                    return;
                } else {
                    // do {} should always have while as the next word.
                    // if we don't see the expected while, recover
                    print_newline();
                    flags.do_block = false;
                }
            }

            // if may be followed by else, or not
            // Bare/inline ifs are tricky
            // Need to unwind the modes correctly: if (a) if (b) c(); else d(); else e();
            if (flags.if_block) {
                if (!flags.else_block && (current_token.type === 'TK_RESERVED' && current_token.text === 'else')) {
                    flags.else_block = true;
                } else {
                    while (flags.mode === MODE.Statement) {
                        restore_mode();
                    }
                    flags.if_block = false;
                    flags.else_block = false;
                }
            }

            if (current_token.type === 'TK_RESERVED' && (current_token.text === 'case' || (current_token.text === 'default' && flags.in_case_statement))) {
                print_newline();
                if (flags.case_body || opt.jslint_happy) {
                    // switch cases following one another
                    deindent();
                    flags.case_body = false;
                }
                print_token();
                flags.in_case = true;
                flags.in_case_statement = true;
                return;
            }

            if (current_token.type === 'TK_RESERVED' && current_token.text === 'function') {
                if (in_array(flags.last_text, ['}', ';']) || (output.just_added_newline() && !in_array(flags.last_text, ['[', '{', ':', '=', ',']))) {
                    // make sure there is a nice clean space of at least one blank line
                    // before a new function definition
                    if (!output.just_added_blankline() && !current_token.comments_before.length) {
                        print_newline();
                        print_newline(true);
                    }
                }
                if (last_type === 'TK_RESERVED' || last_type === 'TK_WORD') {
                    if (last_type === 'TK_RESERVED' && in_array(flags.last_text, ['get', 'set', 'new', 'return', 'export', 'async'])) {
                        output.space_before_token = true;
                    } else if (last_type === 'TK_RESERVED' && flags.last_text === 'default' && last_last_text === 'export') {
                        output.space_before_token = true;
                    } else {
                        print_newline();
                    }
                } else if (last_type === 'TK_OPERATOR' || flags.last_text === '=') {
                    // foo = function
                    output.space_before_token = true;
                } else if (!flags.multiline_frame && (is_expression(flags.mode) || is_array(flags.mode))) {
                    // (function
                } else {
                    print_newline();
                }
            }

            if (last_type === 'TK_COMMA' || last_type === 'TK_START_EXPR' || last_type === 'TK_EQUALS' || last_type === 'TK_OPERATOR') {
                if (!start_of_object_property()) {
                    allow_wrap_or_preserved_newline();
                }
            }

            if (current_token.type === 'TK_RESERVED' && in_array(current_token.text, ['function', 'get', 'set'])) {
                print_token();
                flags.last_word = current_token.text;
                return;
            }

            prefix = 'NONE';

            if (last_type === 'TK_END_BLOCK') {

                if (!(current_token.type === 'TK_RESERVED' && in_array(current_token.text, ['else', 'catch', 'finally', 'from']))) {
                    prefix = 'NEWLINE';
                } else {
                    if (opt.brace_style === "expand" ||
                        opt.brace_style === "end-expand" ||
                        (opt.brace_style === "none" && current_token.wanted_newline)) {
                        prefix = 'NEWLINE';
                    } else {
                        prefix = 'SPACE';
                        output.space_before_token = true;
                    }
                }
            } else if (last_type === 'TK_SEMICOLON' && flags.mode === MODE.BlockStatement) {
                // TODO: Should this be for STATEMENT as well?
                prefix = 'NEWLINE';
            } else if (last_type === 'TK_SEMICOLON' && is_expression(flags.mode)) {
                prefix = 'SPACE';
            } else if (last_type === 'TK_STRING') {
                prefix = 'NEWLINE';
            } else if (last_type === 'TK_RESERVED' || last_type === 'TK_WORD' ||
                (flags.last_text === '*' && last_last_text === 'function')) {
                prefix = 'SPACE';
            } else if (last_type === 'TK_START_BLOCK') {
                if (flags.inline_frame) {
                    prefix = 'SPACE';
                } else {
                    prefix = 'NEWLINE';
                }
            } else if (last_type === 'TK_END_EXPR') {
                output.space_before_token = true;
                prefix = 'NEWLINE';
            }

            if (current_token.type === 'TK_RESERVED' && in_array(current_token.text, Tokenizer.line_starters) && flags.last_text !== ')') {
                if (flags.last_text === 'else' || flags.last_text === 'export') {
                    prefix = 'SPACE';
                } else {
                    prefix = 'NEWLINE';
                }

            }

            if (current_token.type === 'TK_RESERVED' && in_array(current_token.text, ['else', 'catch', 'finally'])) {
                if (!(last_type === 'TK_END_BLOCK' && previous_flags.mode === MODE.BlockStatement) ||
                    opt.brace_style === "expand" ||
                    opt.brace_style === "end-expand" ||
                    (opt.brace_style === "none" && current_token.wanted_newline)) {
                    print_newline();
                } else {
                    output.trim(true);
                    var line = output.current_line;
                    // If we trimmed and there's something other than a close block before us
                    // put a newline back in.  Handles '} // comment' scenario.
                    if (line.last() !== '}') {
                        print_newline();
                    }
                    output.space_before_token = true;
                }
            } else if (prefix === 'NEWLINE') {
                if (last_type === 'TK_RESERVED' && is_special_word(flags.last_text)) {
                    // no newline between 'return nnn'
                    output.space_before_token = true;
                } else if (last_type !== 'TK_END_EXPR') {
                    if ((last_type !== 'TK_START_EXPR' || !(current_token.type === 'TK_RESERVED' && in_array(current_token.text, ['var', 'let', 'const']))) && flags.last_text !== ':') {
                        // no need to force newline on 'var': for (var x = 0...)
                        if (current_token.type === 'TK_RESERVED' && current_token.text === 'if' && flags.last_text === 'else') {
                            // no newline for } else if {
                            output.space_before_token = true;
                        } else {
                            print_newline();
                        }
                    }
                } else if (current_token.type === 'TK_RESERVED' && in_array(current_token.text, Tokenizer.line_starters) && flags.last_text !== ')') {
                    print_newline();
                }
            } else if (flags.multiline_frame && is_array(flags.mode) && flags.last_text === ',' && last_last_text === '}') {
                print_newline(); // }, in lists get a newline treatment
            } else if (prefix === 'SPACE') {
                output.space_before_token = true;
            }
            print_token();
            flags.last_word = current_token.text;

            if (current_token.type === 'TK_RESERVED') {
                if (current_token.text === 'do') {
                    flags.do_block = true;
                } else if (current_token.text === 'if') {
                    flags.if_block = true;
                } else if (current_token.text === 'import') {
                    flags.import_block = true;
                } else if (flags.import_block && current_token.type === 'TK_RESERVED' && current_token.text === 'from') {
                    flags.import_block = false;
                }
            }
        }

        function handle_semicolon() {
            if (start_of_statement()) {
                // The conditional starts the statement if appropriate.
                // Semicolon can be the start (and end) of a statement
                output.space_before_token = false;
            }
            while (flags.mode === MODE.Statement && !flags.if_block && !flags.do_block) {
                restore_mode();
            }

            // hacky but effective for the moment
            if (flags.import_block) {
                flags.import_block = false;
            }
            print_token();
        }

        function handle_string() {
            if (start_of_statement()) {
                // The conditional starts the statement if appropriate.
                // One difference - strings want at least a space before
                output.space_before_token = true;
            } else if (last_type === 'TK_RESERVED' || last_type === 'TK_WORD' || flags.inline_frame) {
                output.space_before_token = true;
            } else if (last_type === 'TK_COMMA' || last_type === 'TK_START_EXPR' || last_type === 'TK_EQUALS' || last_type === 'TK_OPERATOR') {
                if (!start_of_object_property()) {
                    allow_wrap_or_preserved_newline();
                }
            } else {
                print_newline();
            }
            print_token();
        }

        function handle_equals() {
            if (start_of_statement()) {
                // The conditional starts the statement if appropriate.
            }

            if (flags.declaration_statement) {
                // just got an '=' in a var-line, different formatting/line-breaking, etc will now be done
                flags.declaration_assignment = true;
            }
            output.space_before_token = true;
            print_token();
            output.space_before_token = true;
        }

        function handle_comma() {
            print_token();
            output.space_before_token = true;
            if (flags.declaration_statement) {
                if (is_expression(flags.parent.mode)) {
                    // do not break on comma, for(var a = 1, b = 2)
                    flags.declaration_assignment = false;
                }

                if (flags.declaration_assignment) {
                    flags.declaration_assignment = false;
                    print_newline(false, true);
                } else if (opt.comma_first) {
                    // for comma-first, we want to allow a newline before the comma
                    // to turn into a newline after the comma, which we will fixup later
                    allow_wrap_or_preserved_newline();
                }
            } else if (flags.mode === MODE.ObjectLiteral ||
                (flags.mode === MODE.Statement && flags.parent.mode === MODE.ObjectLiteral)) {
                if (flags.mode === MODE.Statement) {
                    restore_mode();
                }

                if (!flags.inline_frame) {
                    print_newline();
                }
            } else if (opt.comma_first) {
                // EXPR or DO_BLOCK
                // for comma-first, we want to allow a newline before the comma
                // to turn into a newline after the comma, which we will fixup later
                allow_wrap_or_preserved_newline();
            }
        }

        function handle_operator() {
            if (start_of_statement()) {
                // The conditional starts the statement if appropriate.
            }

            if (last_type === 'TK_RESERVED' && is_special_word(flags.last_text)) {
                // "return" had a special handling in TK_WORD. Now we need to return the favor
                output.space_before_token = true;
                print_token();
                return;
            }

            // hack for actionscript's import .*;
            if (current_token.text === '*' && last_type === 'TK_DOT') {
                print_token();
                return;
            }

            if (current_token.text === '::') {
                // no spaces around exotic namespacing syntax operator
                print_token();
                return;
            }

            // Allow line wrapping between operators when operator_position is
            //   set to before or preserve
            if (last_type === 'TK_OPERATOR' && in_array(opt.operator_position, OPERATOR_POSITION_BEFORE_OR_PRESERVE)) {
                allow_wrap_or_preserved_newline();
            }

            if (current_token.text === ':' && flags.in_case) {
                flags.case_body = true;
                indent();
                print_token();
                print_newline();
                flags.in_case = false;
                return;
            }

            var space_before = true;
            var space_after = true;
            var in_ternary = false;
            var isGeneratorAsterisk = current_token.text === '*' && last_type === 'TK_RESERVED' && flags.last_text === 'function';
            var isUnary = in_array(current_token.text, ['-', '+']) && (
                in_array(last_type, ['TK_START_BLOCK', 'TK_START_EXPR', 'TK_EQUALS', 'TK_OPERATOR']) ||
                in_array(flags.last_text, Tokenizer.line_starters) ||
                flags.last_text === ','
            );

            if (current_token.text === ':') {
                if (flags.ternary_depth === 0) {
                    // Colon is invalid javascript outside of ternary and object, but do our best to guess what was meant.
                    space_before = false;
                } else {
                    flags.ternary_depth -= 1;
                    in_ternary = true;
                }
            } else if (current_token.text === '?') {
                flags.ternary_depth += 1;
            }

            // let's handle the operator_position option prior to any conflicting logic
            if (!isUnary && !isGeneratorAsterisk && opt.preserve_newlines && in_array(current_token.text, Tokenizer.positionable_operators)) {
                var isColon = current_token.text === ':';
                var isTernaryColon = (isColon && in_ternary);
                var isOtherColon = (isColon && !in_ternary);

                switch (opt.operator_position) {
                    case OPERATOR_POSITION.before_newline:
                        // if the current token is : and it's not a ternary statement then we set space_before to false
                        output.space_before_token = !isOtherColon;

                        print_token();

                        if (!isColon || isTernaryColon) {
                            allow_wrap_or_preserved_newline();
                        }

                        output.space_before_token = true;
                        return;

                    case OPERATOR_POSITION.after_newline:
                        // if the current token is anything but colon, or (via deduction) it's a colon and in a ternary statement,
                        //   then print a newline.

                        output.space_before_token = true;

                        if (!isColon || isTernaryColon) {
                            if (get_token(1).wanted_newline) {
                                print_newline(false, true);
                            } else {
                                allow_wrap_or_preserved_newline();
                            }
                        } else {
                            output.space_before_token = false;
                        }

                        print_token();

                        output.space_before_token = true;
                        return;

                    case OPERATOR_POSITION.preserve_newline:
                        if (!isOtherColon) {
                            allow_wrap_or_preserved_newline();
                        }

                        // if we just added a newline, or the current token is : and it's not a ternary statement,
                        //   then we set space_before to false
                        space_before = !(output.just_added_newline() || isOtherColon);

                        output.space_before_token = space_before;
                        print_token();
                        output.space_before_token = true;
                        return;
                }
            }

            if (in_array(current_token.text, ['--', '++', '!', '~']) || isUnary) {
                // unary operators (and binary +/- pretending to be unary) special cases

                space_before = false;
                space_after = false;

                // http://www.ecma-international.org/ecma-262/5.1/#sec-7.9.1
                // if there is a newline between -- or ++ and anything else we should preserve it.
                if (current_token.wanted_newline && (current_token.text === '--' || current_token.text === '++')) {
                    print_newline(false, true);
                }

                if (flags.last_text === ';' && is_expression(flags.mode)) {
                    // for (;; ++i)
                    //        ^^^
                    space_before = true;
                }

                if (last_type === 'TK_RESERVED') {
                    space_before = true;
                } else if (last_type === 'TK_END_EXPR') {
                    space_before = !(flags.last_text === ']' && (current_token.text === '--' || current_token.text === '++'));
                } else if (last_type === 'TK_OPERATOR') {
                    // a++ + ++b;
                    // a - -b
                    space_before = in_array(current_token.text, ['--', '-', '++', '+']) && in_array(flags.last_text, ['--', '-', '++', '+']);
                    // + and - are not unary when preceeded by -- or ++ operator
                    // a-- + b
                    // a * +b
                    // a - -b
                    if (in_array(current_token.text, ['+', '-']) && in_array(flags.last_text, ['--', '++'])) {
                        space_after = true;
                    }
                }


                if (((flags.mode === MODE.BlockStatement && !flags.inline_frame) || flags.mode === MODE.Statement) &&
                    (flags.last_text === '{' || flags.last_text === ';')) {
                    // { foo; --i }
                    // foo(); --bar;
                    print_newline();
                }
            } else if (isGeneratorAsterisk) {
                space_before = false;
                space_after = false;
            }
            output.space_before_token = output.space_before_token || space_before;
            print_token();
            output.space_before_token = space_after;
        }

        function handle_block_comment() {
            if (output.raw) {
                output.add_raw_token(current_token);
                if (current_token.directives && current_token.directives.preserve === 'end') {
                    // If we're testing the raw output behavior, do not allow a directive to turn it off.
                    output.raw = opt.test_output_raw;
                }
                return;
            }

            if (current_token.directives) {
                print_newline(false, true);
                print_token();
                if (current_token.directives.preserve === 'start') {
                    output.raw = true;
                }
                print_newline(false, true);
                return;
            }

            // inline block
            if (!acorn.newline.test(current_token.text) && !current_token.wanted_newline) {
                output.space_before_token = true;
                print_token();
                output.space_before_token = true;
                return;
            }

            var lines = split_linebreaks(current_token.text);
            var j; // iterator for this case
            var javadoc = false;
            var starless = false;
            var lastIndent = current_token.whitespace_before;
            var lastIndentLength = lastIndent.length;

            // block comment starts with a new line
            print_newline(false, true);
            if (lines.length > 1) {
                javadoc = all_lines_start_with(lines.slice(1), '*');
                starless = each_line_matches_indent(lines.slice(1), lastIndent);
            }

            // first line always indented
            print_token(lines[0]);
            for (j = 1; j < lines.length; j++) {
                print_newline(false, true);
                if (javadoc) {
                    // javadoc: reformat and re-indent
                    print_token(' ' + ltrim(lines[j]));
                } else if (starless && lines[j].length > lastIndentLength) {
                    // starless: re-indent non-empty content, avoiding trim
                    print_token(lines[j].substring(lastIndentLength));
                } else {
                    // normal comments output raw
                    output.add_token(lines[j]);
                }
            }

            // for comments of more than one line, make sure there's a new line after
            print_newline(false, true);
        }

        function handle_comment() {
            if (current_token.wanted_newline) {
                print_newline(false, true);
            } else {
                output.trim(true);
            }

            output.space_before_token = true;
            print_token();
            print_newline(false, true);
        }

        function handle_dot() {
            if (start_of_statement()) {
                // The conditional starts the statement if appropriate.
            }

            if (last_type === 'TK_RESERVED' && is_special_word(flags.last_text)) {
                output.space_before_token = true;
            } else {
                // allow preserved newlines before dots in general
                // force newlines on dots after close paren when break_chained - for bar().baz()
                allow_wrap_or_preserved_newline(flags.last_text === ')' && opt.break_chained_methods);
            }

            print_token();
        }

        function handle_unknown() {
            print_token();

            if (current_token.text[current_token.text.length - 1] === '\n') {
                print_newline();
            }
        }

        function handle_eof() {
            // Unwind any open statements
            while (flags.mode === MODE.Statement) {
                restore_mode();
            }
        }
    }


    function OutputLine(parent) {
        var _character_count = 0;
        // use indent_count as a marker for lines that have preserved indentation
        var _indent_count = -1;

        var _items = [];
        var _empty = true;

        this.set_indent = function(level) {
            _character_count = parent.baseIndentLength + level * parent.indent_length;
            _indent_count = level;
        };

        this.get_character_count = function() {
            return _character_count;
        };

        this.is_empty = function() {
            return _empty;
        };

        this.last = function() {
            if (!this._empty) {
                return _items[_items.length - 1];
            } else {
                return null;
            }
        };

        this.push = function(input) {
            _items.push(input);
            _character_count += input.length;
            _empty = false;
        };

        this.pop = function() {
            var item = null;
            if (!_empty) {
                item = _items.pop();
                _character_count -= item.length;
                _empty = _items.length === 0;
            }
            return item;
        };

        this.remove_indent = function() {
            if (_indent_count > 0) {
                _indent_count -= 1;
                _character_count -= parent.indent_length;
            }
        };

        this.trim = function() {
            while (this.last() === ' ') {
                _items.pop();
                _character_count -= 1;
            }
            _empty = _items.length === 0;
        };

        this.toString = function() {
            var result = '';
            if (!this._empty) {
                if (_indent_count >= 0) {
                    result = parent.indent_cache[_indent_count];
                }
                result += _items.join('');
            }
            return result;
        };
    }

    function Output(indent_string, baseIndentString) {
        baseIndentString = baseIndentString || '';
        this.indent_cache = [baseIndentString];
        this.baseIndentLength = baseIndentString.length;
        this.indent_length = indent_string.length;
        this.raw = false;

        var lines = [];
        this.baseIndentString = baseIndentString;
        this.indent_string = indent_string;
        this.previous_line = null;
        this.current_line = null;
        this.space_before_token = false;

        this.add_outputline = function() {
            this.previous_line = this.current_line;
            this.current_line = new OutputLine(this);
            lines.push(this.current_line);
        };

        // initialize
        this.add_outputline();


        this.get_line_number = function() {
            return lines.length;
        };

        // Using object instead of string to allow for later expansion of info about each line
        this.add_new_line = function(force_newline) {
            if (this.get_line_number() === 1 && this.just_added_newline()) {
                return false; // no newline on start of file
            }

            if (force_newline || !this.just_added_newline()) {
                if (!this.raw) {
                    this.add_outputline();
                }
                return true;
            }

            return false;
        };

        this.get_code = function() {
            var sweet_code = lines.join('\n').replace(/[\r\n\t ]+$/, '');
            return sweet_code;
        };

        this.set_indent = function(level) {
            // Never indent your first output indent at the start of the file
            if (lines.length > 1) {
                while (level >= this.indent_cache.length) {
                    this.indent_cache.push(this.indent_cache[this.indent_cache.length - 1] + this.indent_string);
                }

                this.current_line.set_indent(level);
                return true;
            }
            this.current_line.set_indent(0);
            return false;
        };

        this.add_raw_token = function(token) {
            for (var x = 0; x < token.newlines; x++) {
                this.add_outputline();
            }
            this.current_line.push(token.whitespace_before);
            this.current_line.push(token.text);
            this.space_before_token = false;
        };

        this.add_token = function(printable_token) {
            this.add_space_before_token();
            this.current_line.push(printable_token);
        };

        this.add_space_before_token = function() {
            if (this.space_before_token && !this.just_added_newline()) {
                this.current_line.push(' ');
            }
            this.space_before_token = false;
        };

        this.remove_redundant_indentation = function(frame) {
            // This implementation is effective but has some issues:
            //     - can cause line wrap to happen too soon due to indent removal
            //           after wrap points are calculated
            // These issues are minor compared to ugly indentation.

            if (frame.multiline_frame ||
                frame.mode === MODE.ForInitializer ||
                frame.mode === MODE.Conditional) {
                return;
            }

            // remove one indent from each line inside this section
            var index = frame.start_line_index;

            var output_length = lines.length;
            while (index < output_length) {
                lines[index].remove_indent();
                index++;
            }
        };

        this.trim = function(eat_newlines) {
            eat_newlines = (eat_newlines === undefined) ? false : eat_newlines;

            this.current_line.trim(indent_string, baseIndentString);

            while (eat_newlines && lines.length > 1 &&
                this.current_line.is_empty()) {
                lines.pop();
                this.current_line = lines[lines.length - 1];
                this.current_line.trim();
            }

            this.previous_line = lines.length > 1 ? lines[lines.length - 2] : null;
        };

        this.just_added_newline = function() {
            return this.current_line.is_empty();
        };

        this.just_added_blankline = function() {
            if (this.just_added_newline()) {
                if (lines.length === 1) {
                    return true; // start of the file and newline = blank
                }

                var line = lines[lines.length - 2];
                return line.is_empty();
            }
            return false;
        };
    }


    var Token = function(type, text, newlines, whitespace_before, parent) {
        this.type = type;
        this.text = text;
        this.comments_before = [];
        this.newlines = newlines || 0;
        this.wanted_newline = newlines > 0;
        this.whitespace_before = whitespace_before || '';
        this.parent = parent || null;
        this.opened = null;
        this.directives = null;
    };

    function tokenizer(input, opts) {

        var whitespace = "\n\r\t ".split('');
        var digit = /[0-9]/;
        var digit_bin = /[01]/;
        var digit_oct = /[01234567]/;
        var digit_hex = /[0123456789abcdefABCDEF]/;

        this.positionable_operators = '!= !== % & && * ** + - / : < << <= == === > >= >> >>> ? ^ | ||'.split(' ');
        var punct = this.positionable_operators.concat(
            // non-positionable operators - these do not follow operator position settings
            '! %= &= *= **= ++ += , -- -= /= :: <<= = => >>= >>>= ^= |= ~'.split(' '));

        // words which should always start on new line.
        this.line_starters = 'continue,try,throw,return,var,let,const,if,switch,case,default,for,while,break,function,import,export'.split(',');
        var reserved_words = this.line_starters.concat(['do', 'in', 'else', 'get', 'set', 'new', 'catch', 'finally', 'typeof', 'yield', 'async', 'await', 'from', 'as']);

        //  /* ... */ comment ends with nearest */ or end of file
        var block_comment_pattern = /([\s\S]*?)((?:\*\/)|$)/g;

        // comment ends just before nearest linefeed or end of file
        var comment_pattern = /([^\n\r\u2028\u2029]*)/g;

        var directives_block_pattern = /\/\* beautify( \w+[:]\w+)+ \*\//g;
        var directive_pattern = / (\w+)[:](\w+)/g;
        var directives_end_ignore_pattern = /([\s\S]*?)((?:\/\*\sbeautify\signore:end\s\*\/)|$)/g;

        var template_pattern = /((<\?php|<\?=)[\s\S]*?\?>)|(<%[\s\S]*?%>)/g;

        var n_newlines, whitespace_before_token, in_html_comment, tokens, parser_pos;
        var input_length;

        this.tokenize = function() {
            // cache the source's length.
            input_length = input.length;
            parser_pos = 0;
            in_html_comment = false;
            tokens = [];

            var next, last;
            var token_values;
            var open = null;
            var open_stack = [];
            var comments = [];

            while (!(last && last.type === 'TK_EOF')) {
                token_values = tokenize_next();
                next = new Token(token_values[1], token_values[0], n_newlines, whitespace_before_token);
                while (next.type === 'TK_COMMENT' || next.type === 'TK_BLOCK_COMMENT' || next.type === 'TK_UNKNOWN') {
                    if (next.type === 'TK_BLOCK_COMMENT') {
                        next.directives = token_values[2];
                    }
                    comments.push(next);
                    token_values = tokenize_next();
                    next = new Token(token_values[1], token_values[0], n_newlines, whitespace_before_token);
                }

                if (comments.length) {
                    next.comments_before = comments;
                    comments = [];
                }

                if (next.type === 'TK_START_BLOCK' || next.type === 'TK_START_EXPR') {
                    next.parent = last;
                    open_stack.push(open);
                    open = next;
                } else if ((next.type === 'TK_END_BLOCK' || next.type === 'TK_END_EXPR') &&
                    (open && (
                        (next.text === ']' && open.text === '[') ||
                        (next.text === ')' && open.text === '(') ||
                        (next.text === '}' && open.text === '{')))) {
                    next.parent = open.parent;
                    next.opened = open;

                    open = open_stack.pop();
                }

                tokens.push(next);
                last = next;
            }

            return tokens;
        };

        function get_directives(text) {
            if (!text.match(directives_block_pattern)) {
                return null;
            }

            var directives = {};
            directive_pattern.lastIndex = 0;
            var directive_match = directive_pattern.exec(text);

            while (directive_match) {
                directives[directive_match[1]] = directive_match[2];
                directive_match = directive_pattern.exec(text);
            }

            return directives;
        }

        function tokenize_next() {
            var resulting_string;
            var whitespace_on_this_line = [];

            n_newlines = 0;
            whitespace_before_token = '';

            if (parser_pos >= input_length) {
                return ['', 'TK_EOF'];
            }

            var last_token;
            if (tokens.length) {
                last_token = tokens[tokens.length - 1];
            } else {
                // For the sake of tokenizing we can pretend that there was on open brace to start
                last_token = new Token('TK_START_BLOCK', '{');
            }


            var c = input.charAt(parser_pos);
            parser_pos += 1;

            while (in_array(c, whitespace)) {

                if (acorn.newline.test(c)) {
                    if (!(c === '\n' && input.charAt(parser_pos - 2) === '\r')) {
                        n_newlines += 1;
                        whitespace_on_this_line = [];
                    }
                } else {
                    whitespace_on_this_line.push(c);
                }

                if (parser_pos >= input_length) {
                    return ['', 'TK_EOF'];
                }

                c = input.charAt(parser_pos);
                parser_pos += 1;
            }

            if (whitespace_on_this_line.length) {
                whitespace_before_token = whitespace_on_this_line.join('');
            }

            if (digit.test(c) || (c === '.' && digit.test(input.charAt(parser_pos)))) {
                var allow_decimal = true;
                var allow_e = true;
                var local_digit = digit;

                if (c === '0' && parser_pos < input_length && /[XxOoBb]/.test(input.charAt(parser_pos))) {
                    // switch to hex/oct/bin number, no decimal or e, just hex/oct/bin digits
                    allow_decimal = false;
                    allow_e = false;
                    if (/[Bb]/.test(input.charAt(parser_pos))) {
                        local_digit = digit_bin;
                    } else if (/[Oo]/.test(input.charAt(parser_pos))) {
                        local_digit = digit_oct;
                    } else {
                        local_digit = digit_hex;
                    }
                    c += input.charAt(parser_pos);
                    parser_pos += 1;
                } else if (c === '.') {
                    // Already have a decimal for this literal, don't allow another
                    allow_decimal = false;
                } else {
                    // we know this first loop will run.  It keeps the logic simpler.
                    c = '';
                    parser_pos -= 1;
                }

                // Add the digits
                while (parser_pos < input_length && local_digit.test(input.charAt(parser_pos))) {
                    c += input.charAt(parser_pos);
                    parser_pos += 1;

                    if (allow_decimal && parser_pos < input_length && input.charAt(parser_pos) === '.') {
                        c += input.charAt(parser_pos);
                        parser_pos += 1;
                        allow_decimal = false;
                    } else if (allow_e && parser_pos < input_length && /[Ee]/.test(input.charAt(parser_pos))) {
                        c += input.charAt(parser_pos);
                        parser_pos += 1;

                        if (parser_pos < input_length && /[+-]/.test(input.charAt(parser_pos))) {
                            c += input.charAt(parser_pos);
                            parser_pos += 1;
                        }

                        allow_e = false;
                        allow_decimal = false;
                    }
                }

                return [c, 'TK_WORD'];
            }

            if (acorn.isIdentifierStart(input.charCodeAt(parser_pos - 1))) {
                if (parser_pos < input_length) {
                    while (acorn.isIdentifierChar(input.charCodeAt(parser_pos))) {
                        c += input.charAt(parser_pos);
                        parser_pos += 1;
                        if (parser_pos === input_length) {
                            break;
                        }
                    }
                }

                if (!(last_token.type === 'TK_DOT' ||
                        (last_token.type === 'TK_RESERVED' && in_array(last_token.text, ['set', 'get']))) &&
                    in_array(c, reserved_words)) {
                    if (c === 'in') { // hack for 'in' operator
                        return [c, 'TK_OPERATOR'];
                    }
                    return [c, 'TK_RESERVED'];
                }

                return [c, 'TK_WORD'];
            }

            if (c === '(' || c === '[') {
                return [c, 'TK_START_EXPR'];
            }

            if (c === ')' || c === ']') {
                return [c, 'TK_END_EXPR'];
            }

            if (c === '{') {
                return [c, 'TK_START_BLOCK'];
            }

            if (c === '}') {
                return [c, 'TK_END_BLOCK'];
            }

            if (c === ';') {
                return [c, 'TK_SEMICOLON'];
            }

            if (c === '/') {
                var comment = '';
                var comment_match;
                // peek for comment /* ... */
                if (input.charAt(parser_pos) === '*') {
                    parser_pos += 1;
                    block_comment_pattern.lastIndex = parser_pos;
                    comment_match = block_comment_pattern.exec(input);
                    comment = '/*' + comment_match[0];
                    parser_pos += comment_match[0].length;
                    var directives = get_directives(comment);
                    if (directives && directives.ignore === 'start') {
                        directives_end_ignore_pattern.lastIndex = parser_pos;
                        comment_match = directives_end_ignore_pattern.exec(input);
                        comment += comment_match[0];
                        parser_pos += comment_match[0].length;
                    }
                    comment = comment.replace(acorn.allLineBreaks, '\n');
                    return [comment, 'TK_BLOCK_COMMENT', directives];
                }
                // peek for comment // ...
                if (input.charAt(parser_pos) === '/') {
                    parser_pos += 1;
                    comment_pattern.lastIndex = parser_pos;
                    comment_match = comment_pattern.exec(input);
                    comment = '//' + comment_match[0];
                    parser_pos += comment_match[0].length;
                    return [comment, 'TK_COMMENT'];
                }

            }

            var startXmlRegExp = /^<([-a-zA-Z:0-9_.]+|{.+?}|!\[CDATA\[[\s\S]*?\]\])(\s+{.+?}|\s+[-a-zA-Z:0-9_.]+|\s+[-a-zA-Z:0-9_.]+\s*=\s*('[^']*'|"[^"]*"|{.+?}))*\s*(\/?)\s*>/;

            if (c === '`' || c === "'" || c === '"' || // string
                (
                    (c === '/') || // regexp
                    (opts.e4x && c === "<" && input.slice(parser_pos - 1).match(startXmlRegExp)) // xml
                ) && ( // regex and xml can only appear in specific locations during parsing
                    (last_token.type === 'TK_RESERVED' && in_array(last_token.text, ['return', 'case', 'throw', 'else', 'do', 'typeof', 'yield'])) ||
                    (last_token.type === 'TK_END_EXPR' && last_token.text === ')' &&
                        last_token.parent && last_token.parent.type === 'TK_RESERVED' && in_array(last_token.parent.text, ['if', 'while', 'for'])) ||
                    (in_array(last_token.type, ['TK_COMMENT', 'TK_START_EXPR', 'TK_START_BLOCK',
                        'TK_END_BLOCK', 'TK_OPERATOR', 'TK_EQUALS', 'TK_EOF', 'TK_SEMICOLON', 'TK_COMMA'
                    ]))
                )) {

                var sep = c,
                    esc = false,
                    has_char_escapes = false;

                resulting_string = c;

                if (sep === '/') {
                    //
                    // handle regexp
                    //
                    var in_char_class = false;
                    while (parser_pos < input_length &&
                        ((esc || in_char_class || input.charAt(parser_pos) !== sep) &&
                            !acorn.newline.test(input.charAt(parser_pos)))) {
                        resulting_string += input.charAt(parser_pos);
                        if (!esc) {
                            esc = input.charAt(parser_pos) === '\\';
                            if (input.charAt(parser_pos) === '[') {
                                in_char_class = true;
                            } else if (input.charAt(parser_pos) === ']') {
                                in_char_class = false;
                            }
                        } else {
                            esc = false;
                        }
                        parser_pos += 1;
                    }
                } else if (opts.e4x && sep === '<') {
                    //
                    // handle e4x xml literals
                    //

                    var xmlRegExp = /<(\/?)([-a-zA-Z:0-9_.]+|{.+?}|!\[CDATA\[[\s\S]*?\]\])(\s+{.+?}|\s+[-a-zA-Z:0-9_.]+|\s+[-a-zA-Z:0-9_.]+\s*=\s*('[^']*'|"[^"]*"|{.+?}))*\s*(\/?)\s*>/g;
                    var xmlStr = input.slice(parser_pos - 1);
                    var match = xmlRegExp.exec(xmlStr);
                    if (match && match.index === 0) {
                        var rootTag = match[2];
                        var depth = 0;
                        while (match) {
                            var isEndTag = !!match[1];
                            var tagName = match[2];
                            var isSingletonTag = (!!match[match.length - 1]) || (tagName.slice(0, 8) === "![CDATA[");
                            if (tagName === rootTag && !isSingletonTag) {
                                if (isEndTag) {
                                    --depth;
                                } else {
                                    ++depth;
                                }
                            }
                            if (depth <= 0) {
                                break;
                            }
                            match = xmlRegExp.exec(xmlStr);
                        }
                        var xmlLength = match ? match.index + match[0].length : xmlStr.length;
                        xmlStr = xmlStr.slice(0, xmlLength);
                        parser_pos += xmlLength - 1;
                        xmlStr = xmlStr.replace(acorn.allLineBreaks, '\n');
                        return [xmlStr, "TK_STRING"];
                    }
                } else {
                    //
                    // handle string
                    //
                    var parse_string = function(delimiter, allow_unescaped_newlines, start_sub) {
                        // Template strings can travers lines without escape characters.
                        // Other strings cannot
                        var current_char;
                        while (parser_pos < input_length) {
                            current_char = input.charAt(parser_pos);
                            if (!(esc || (current_char !== delimiter &&
                                    (allow_unescaped_newlines || !acorn.newline.test(current_char))))) {
                                break;
                            }

                            // Handle \r\n linebreaks after escapes or in template strings
                            if ((esc || allow_unescaped_newlines) && acorn.newline.test(current_char)) {
                                if (current_char === '\r' && input.charAt(parser_pos + 1) === '\n') {
                                    parser_pos += 1;
                                    current_char = input.charAt(parser_pos);
                                }
                                resulting_string += '\n';
                            } else {
                                resulting_string += current_char;
                            }
                            if (esc) {
                                if (current_char === 'x' || current_char === 'u') {
                                    has_char_escapes = true;
                                }
                                esc = false;
                            } else {
                                esc = current_char === '\\';
                            }

                            parser_pos += 1;

                            if (start_sub && resulting_string.indexOf(start_sub, resulting_string.length - start_sub.length) !== -1) {
                                if (delimiter === '`') {
                                    parse_string('}', allow_unescaped_newlines, '`');
                                } else {
                                    parse_string('`', allow_unescaped_newlines, '${');
                                }
                            }
                        }
                    };

                    if (sep === '`') {
                        parse_string('`', true, '${');
                    } else {
                        parse_string(sep);
                    }
                }

                if (has_char_escapes && opts.unescape_strings) {
                    resulting_string = unescape_string(resulting_string);
                }

                if (parser_pos < input_length && input.charAt(parser_pos) === sep) {
                    resulting_string += sep;
                    parser_pos += 1;

                    if (sep === '/') {
                        // regexps may have modifiers /regexp/MOD , so fetch those, too
                        // Only [gim] are valid, but if the user puts in garbage, do what we can to take it.
                        while (parser_pos < input_length && acorn.isIdentifierStart(input.charCodeAt(parser_pos))) {
                            resulting_string += input.charAt(parser_pos);
                            parser_pos += 1;
                        }
                    }
                }
                return [resulting_string, 'TK_STRING'];
            }

            if (c === '#') {

                if (tokens.length === 0 && input.charAt(parser_pos) === '!') {
                    // shebang
                    resulting_string = c;
                    while (parser_pos < input_length && c !== '\n') {
                        c = input.charAt(parser_pos);
                        resulting_string += c;
                        parser_pos += 1;
                    }
                    return [trim(resulting_string) + '\n', 'TK_UNKNOWN'];
                }



                // Spidermonkey-specific sharp variables for circular references
                // https://developer.mozilla.org/En/Sharp_variables_in_JavaScript
                // http://mxr.mozilla.org/mozilla-central/source/js/src/jsscan.cpp around line 1935
                var sharp = '#';
                if (parser_pos < input_length && digit.test(input.charAt(parser_pos))) {
                    do {
                        c = input.charAt(parser_pos);
                        sharp += c;
                        parser_pos += 1;
                    } while (parser_pos < input_length && c !== '#' && c !== '=');
                    if (c === '#') {
                        //
                    } else if (input.charAt(parser_pos) === '[' && input.charAt(parser_pos + 1) === ']') {
                        sharp += '[]';
                        parser_pos += 2;
                    } else if (input.charAt(parser_pos) === '{' && input.charAt(parser_pos + 1) === '}') {
                        sharp += '{}';
                        parser_pos += 2;
                    }
                    return [sharp, 'TK_WORD'];
                }
            }

            if (c === '<' && (input.charAt(parser_pos) === '?' || input.charAt(parser_pos) === '%')) {
                template_pattern.lastIndex = parser_pos - 1;
                var template_match = template_pattern.exec(input);
                if (template_match) {
                    c = template_match[0];
                    parser_pos += c.length - 1;
                    c = c.replace(acorn.allLineBreaks, '\n');
                    return [c, 'TK_STRING'];
                }
            }

            if (c === '<' && input.substring(parser_pos - 1, parser_pos + 3) === '<!--') {
                parser_pos += 3;
                c = '<!--';
                while (!acorn.newline.test(input.charAt(parser_pos)) && parser_pos < input_length) {
                    c += input.charAt(parser_pos);
                    parser_pos++;
                }
                in_html_comment = true;
                return [c, 'TK_COMMENT'];
            }

            if (c === '-' && in_html_comment && input.substring(parser_pos - 1, parser_pos + 2) === '-->') {
                in_html_comment = false;
                parser_pos += 2;
                return ['-->', 'TK_COMMENT'];
            }

            if (c === '.') {
                return [c, 'TK_DOT'];
            }

            if (in_array(c, punct)) {
                while (parser_pos < input_length && in_array(c + input.charAt(parser_pos), punct)) {
                    c += input.charAt(parser_pos);
                    parser_pos += 1;
                    if (parser_pos >= input_length) {
                        break;
                    }
                }

                if (c === ',') {
                    return [c, 'TK_COMMA'];
                } else if (c === '=') {
                    return [c, 'TK_EQUALS'];
                } else {
                    return [c, 'TK_OPERATOR'];
                }
            }

            return [c, 'TK_UNKNOWN'];
        }


        function unescape_string(s) {
            var esc = false,
                out = '',
                pos = 0,
                s_hex = '',
                escaped = 0,
                c;

            while (esc || pos < s.length) {

                c = s.charAt(pos);
                pos++;

                if (esc) {
                    esc = false;
                    if (c === 'x') {
                        // simple hex-escape \x24
                        s_hex = s.substr(pos, 2);
                        pos += 2;
                    } else if (c === 'u') {
                        // unicode-escape, \u2134
                        s_hex = s.substr(pos, 4);
                        pos += 4;
                    } else {
                        // some common escape, e.g \n
                        out += '\\' + c;
                        continue;
                    }
                    if (!s_hex.match(/^[0123456789abcdefABCDEF]+$/)) {
                        // some weird escaping, bail out,
                        // leaving whole string intact
                        return s;
                    }

                    escaped = parseInt(s_hex, 16);

                    if (escaped >= 0x00 && escaped < 0x20) {
                        // leave 0x00...0x1f escaped
                        if (c === 'x') {
                            out += '\\x' + s_hex;
                        } else {
                            out += '\\u' + s_hex;
                        }
                        continue;
                    } else if (escaped === 0x22 || escaped === 0x27 || escaped === 0x5c) {
                        // single-quote, apostrophe, backslash - escape these
                        out += '\\' + String.fromCharCode(escaped);
                    } else if (c === 'x' && escaped > 0x7e && escaped <= 0xff) {
                        // we bail out on \x7f..\xff,
                        // leaving whole string escaped,
                        // as it's probably completely binary
                        return s;
                    } else {
                        out += String.fromCharCode(escaped);
                    }
                } else if (c === '\\') {
                    esc = true;
                } else {
                    out += c;
                }
            }
            return out;
        }
    }


    if (typeof define === "function" && define.amd) {
        // Add support for AMD ( https://github.com/amdjs/amdjs-api/wiki/AMD#defineamd-property- )
        define([], function() {
            return { js_beautify: js_beautify };
        });
    } else if (typeof exports !== "undefined") {
        // Add support for CommonJS. Just put this file somewhere on your require.paths
        // and you will be able to `var js_beautify = require("beautify").js_beautify`.
        exports.js_beautify = js_beautify;
    } else if (typeof window !== "undefined") {
        // If we're running a web page and don't have either of the above, add our one global
        window.js_beautify = js_beautify;
    } else if (typeof global !== "undefined") {
        // If we don't even have window, try global.
        global.js_beautify = js_beautify;
    }

}());