code: function _setup() {
      slidesDOMEl.addEventListener(TRANSITION_END, onTransitionEnd)
      containerDOMEl.addEventListener('touchstart', onTouchstart, EVENT_OPTIONS)
      containerDOMEl.addEventListener('touchmove', onTouchmove, EVENT_OPTIONS)
      containerDOMEl.addEventListener('touchend', onTouchend, EVENT_OPTIONS)
  
      if (index !== 0) {
        _translate(0)
      }
    }
docs: public
  setup function