Get the name of transitonend event

transitionEnd.js

/**
 * Check for transition end support
 * Based on https://gist.github.com/O-Zone/7230245
 * @returns {String}
 */
export default function transitionEndEvent() {
  const transitions = {
    transition: 'transitionend',
    WebkitTransition: 'webkitTransitionEnd',
    MozTransition: 'transitionend',
    OTransition: 'otransitionend'
  }
  const elem = document.createElement('div')

  // eslint-disable-next-line no-restricted-syntax
  for (const t in transitions) {
    if (typeof elem.style[t] !== 'undefined') {
      return transitions[t]
    }
  }
}