code: function Tabs(el, options) {
        _classCallCheck(this, Tabs);
  
        var _this22 = _possibleConstructorReturn(this, (Tabs.__proto__ || Object.getPrototypeOf(Tabs)).call(this, Tabs, el, options));
  
        _this22.el.M_Tabs = _this22;
  
        /**
         * Options for the Tabs
         * @member Tabs#options
         * @prop {Number} duration
         * @prop {Function} onShow
         * @prop {Boolean} swipeable
         * @prop {Number} responsiveThreshold
         */
        _this22.options = $.extend({}, Tabs.defaults, options);
  
        // Setup
        _this22.$tabLinks = _this22.$el.children('li.tab').children('a');
        _this22.index = 0;
        _this22._setupActiveTabLink();
  
        // Setup tabs content
        if (_this22.options.swipeable) {
          _this22._setupSwipeableTabs();
        } else {
          _this22._setupNormalTabs();
        }
  
        // Setup tabs indicator after content to ensure accurate widths
        _this22._setTabsAndTabWidth();
        _this22._createIndicator();
  
        _this22._setupEventHandlers();
        return _this22;
      }
docs: Construct Tabs instance
  @constructor
  @param {Element} el
  @param {Object} options