swiper/src/components/core/transition/transitionEnd.js

Most modern mobile touch slider and framework with hardware accelerated transitions

export default function (runCallbacks = true, direction) {
  const swiper = this;
  const { activeIndex, previousIndex, params } = swiper;
  swiper.animating = false;
  if (params.cssMode) return;
  swiper.setTransition(0);

  let dir = direction;
  if (!dir) {
    if (activeIndex > previousIndex) dir = 'next';
    else if (activeIndex < previousIndex) dir = 'prev';
    else dir = 'reset';
  }

  swiper.emit('transitionEnd');

  if (runCallbacks && activeIndex !== previousIndex) {
    if (dir === 'reset') {
      swiper.emit('slideResetTransitionEnd');
      return;
    }
    swiper.emit('slideChangeTransitionEnd');
    if (dir === 'next') {
      swiper.emit('slideNextTransitionEnd');
    } else {
      swiper.emit('slidePrevTransitionEnd');
    }
  }
}