/**
  CSS transitions are a PITA, often we need to queue some js after a transition, this helper ensures
  it happens after the transition.

  SO: http://stackoverflow.com/questions/9943435/css3-animation-end-techniques
**/
var dummy = document.createElement("div"),
  eventNameHash = {
    webkit: "webkitTransitionEnd",
    Moz: "transitionend",
    O: "oTransitionEnd",
    ms: "MSTransitionEnd"
  };

var transitionEnd = (function() {
  var retValue;
  retValue = "transitionend";
  Object.keys(eventNameHash).some(function(vendor) {
    if (vendor + "TransitionProperty" in dummy.style) {
      retValue = eventNameHash[vendor];
      return true;
    }
  });
  return retValue;
})();

export default function(element, callback) {
  return $(element).on(transitionEnd, event => {
    if (event.target !== event.currentTarget) return;
    return callback(event);
  });
}
