Escape JSON strings before trying to run JSON.parse

escape-json.js

/*
  Escape JSON
*/
var escapeJSON = exports.escapeJSON = function(json) {
  var escapable = /[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g;
  var meta = {    // table of character substitutions
              '\b': '\\b',
              '\t': '\\t',
              '\n': '\\n',
              '\f': '\\f',
              '\r': '\\r',
              '"' : '\\"',
              '\\': '\\\\'
            };

  escapable.lastIndex = 0;
  return escapable.test(json) ? '"' + json.replace(escapable, function (a) {
      var c = meta[a];
      return (typeof c === 'string') ? c
        : '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
  }) + '"' : '"' + json + '"';

};