
define('circular-json', function (require, module, exports) { 
    /*!
    Copyright (C) 2013-2017 by Andrea Giammarchi - @WebReflection
    
    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.
    
    */
    var
      // should be a not so common char
      // possibly one JSON does not encode
      // possibly one encodeURIComponent does not encode
      // right now this char is '~' but this might change in the future
      specialChar = '~',
      safeSpecialChar = '\\x' + (
        '0' + specialChar.charCodeAt(0).toString(16)
      ).slice(-2),
      escapedSafeSpecialChar = '\\' + safeSpecialChar,
      specialCharRG = new RegExp(safeSpecialChar, 'g'),
      safeSpecialCharRG = new RegExp(escapedSafeSpecialChar, 'g'),
    
      safeStartWithSpecialCharRG = new RegExp('(?:^|([^\\\\]))' + escapedSafeSpecialChar),
    
      indexOf = [].indexOf || function(v){
        for(var i=this.length;i--&&this[i]!==v;);
        return i;
      },
      $String = String  // there's no way to drop warnings in JSHint
                        // about new String ... well, I need that here!
                        // faked, and happy linter!
    ;
    
    function generateReplacer(value, replacer, resolve) {
      var
        doNotIgnore = false,
        inspect = !!replacer,
        path = [],
        all  = [value],
        seen = [value],
        mapp = [resolve ? specialChar : '[Circular]'],
        last = value,
        lvl  = 1,
        i, fn
      ;
      if (inspect) {
        fn = typeof replacer === 'object' ?
          function (key, value) {
            return key !== '' && replacer.indexOf(key) < 0 ? void 0 : value;
          } :
          replacer;
      }
      return function(key, value) {
        // the replacer has rights to decide
        // if a new object should be returned
        // or if there's some key to drop
        // let's call it here rather than "too late"
        if (inspect) value = fn.call(this, key, value);
    
        // first pass should be ignored, since it's just the initial object
        if (doNotIgnore) {
          if (last !== this) {
            i = lvl - indexOf.call(all, this) - 1;
            lvl -= i;
            all.splice(lvl, all.length);
            path.splice(lvl - 1, path.length);
            last = this;
          }
          // console.log(lvl, key, path);
          if (typeof value === 'object' && value) {
        	// if object isn't referring to parent object, add to the
            // object path stack. Otherwise it is already there.
            if (indexOf.call(all, value) < 0) {
              all.push(last = value);
            }
            lvl = all.length;
            i = indexOf.call(seen, value);
            if (i < 0) {
              i = seen.push(value) - 1;
              if (resolve) {
                // key cannot contain specialChar but could be not a string
                path.push(('' + key).replace(specialCharRG, safeSpecialChar));
                mapp[i] = specialChar + path.join(specialChar);
              } else {
                mapp[i] = mapp[0];
              }
            } else {
              value = mapp[i];
            }
          } else {
            if (typeof value === 'string' && resolve) {
              // ensure no special char involved on deserialization
              // in this case only first char is important
              // no need to replace all value (better performance)
              value = value .replace(safeSpecialChar, escapedSafeSpecialChar)
                            .replace(specialChar, safeSpecialChar);
            }
          }
        } else {
          doNotIgnore = true;
        }
        return value;
      };
    }
    
    function retrieveFromPath(current, keys) {
      for(var i = 0, length = keys.length; i < length; current = current[
        // keys should be normalized back here
        keys[i++].replace(safeSpecialCharRG, specialChar)
      ]);
      return current;
    }
    
    function generateReviver(reviver) {
      return function(key, value) {
        var isString = typeof value === 'string';
        if (isString && value.charAt(0) === specialChar) {
          return new $String(value.slice(1));
        }
        if (key === '') value = regenerate(value, value, {});
        // again, only one needed, do not use the RegExp for this replacement
        // only keys need the RegExp
        if (isString) value = value .replace(safeStartWithSpecialCharRG, '$1' + specialChar)
                                    .replace(escapedSafeSpecialChar, safeSpecialChar);
        return reviver ? reviver.call(this, key, value) : value;
      };
    }
    
    function regenerateArray(root, current, retrieve) {
      for (var i = 0, length = current.length; i < length; i++) {
        current[i] = regenerate(root, current[i], retrieve);
      }
      return current;
    }
    
    function regenerateObject(root, current, retrieve) {
      for (var key in current) {
        if (current.hasOwnProperty(key)) {
          current[key] = regenerate(root, current[key], retrieve);
        }
      }
      return current;
    }
    
    function regenerate(root, current, retrieve) {
      return current instanceof Array ?
        // fast Array reconstruction
        regenerateArray(root, current, retrieve) :
        (
          current instanceof $String ?
            (
              // root is an empty string
              current.length ?
                (
                  retrieve.hasOwnProperty(current) ?
                    retrieve[current] :
                    retrieve[current] = retrieveFromPath(
                      root, current.split(specialChar)
                    )
                ) :
                root
            ) :
            (
              current instanceof Object ?
                // dedicated Object parser
                regenerateObject(root, current, retrieve) :
                // value as it is
                current
            )
        )
      ;
    }
    
    var CircularJSON = {
      stringify: function stringify(value, replacer, space, doNotResolve) {
        return CircularJSON.parser.stringify(
          value,
          generateReplacer(value, replacer, !doNotResolve),
          space
        );
      },
      parse: function parse(text, reviver) {
        return CircularJSON.parser.parse(
          text,
          generateReviver(reviver)
        );
      },
      // A parser should be an API 1:1 compatible with JSON
      // it should expose stringify and parse methods.
      // The default parser is the native JSON.
      parser: JSON
    };
    
    module.exports = CircularJSON;
    
});