code: function Moment(config, skipOverflow) {
          if (skipOverflow !== false) {
              checkOverflow(config);
          }
          copyConfig(this, config);
          this._d = new Date(+config._d);
          // Prevent infinite loop in case updateOffset creates new moment
          // objects.
          if (updateInProgress === false) {
              updateInProgress = true;
              moment.updateOffset(this);
              updateInProgress = false;
          }
      }
docs: Moment prototype object