code: function(object) {
          var self = this
          if (object == undefined || object == null) return 'null'
          if (object === true) return 'true'
          if (object === false) return 'false'
          switch (typeof object) {
            case 'number': return object
            case 'string': return this.escapable.test(object) ?
              '"' + object.replace(this.escapable, function (a) {
                return typeof self.meta[a] === 'string' ? self.meta[a] :
                  '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4)
              }) + '"' :
              '"' + object + '"'
            case 'object':  
              if (object.constructor == Array)
                return '[' + map(object, function(val){
                  return self.encode(val)
                }).join(', ') + ']'
              else if (object)
                return '{' + map(object, function(key, val){
                  return self.encode(key) + ':' + self.encode(val)
                }).join(', ') + '}'
          }
          return 'null'
        }
docs: JSON encode _object_.
  
  @param  {mixed} object
  @return {string}
  @api private