import 'core-js/es6/symbol';

import 'core-js/es6/promise';

import 'core-js/es6/set';

import 'core-js/es6/map';

// http://paulirish.com/2011/requestanimationframe-for-smart-animating/

// http://my.opera.com/emoller/blog/2011/12/20/requestanimationframe-for-smart-er-animating

// requestAnimationFrame polyfill by Erik Möller. fixes from Paul Irish and Tino Zijdel

// MIT license

(function () {

  var lastTime = 0;

  var vendors = ['ms', 'moz', 'webkit', 'o'];

  for (var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) {

    window.requestAnimationFrame = window[vendors[x] + 'RequestAnimationFrame'];

    window.cancelAnimationFrame =

      window[vendors[x] + 'CancelAnimationFrame'] ||

      window[vendors[x] + 'CancelRequestAnimationFrame'];

  }

  if (!window.requestAnimationFrame)

    window.requestAnimationFrame = function (callback, element) {

      var currTime = new Date().getTime();

      var timeToCall = Math.max(0, 16 - (currTime - lastTime));

      var id = window.setTimeout(function () {

        callback(currTime + timeToCall);

      }, timeToCall);

      lastTime = currTime + timeToCall;

      return id;

    };

  if (!window.cancelAnimationFrame)

    window.cancelAnimationFrame = function (id) {

      clearTimeout(id);

    };

})();