Code coverage report for imgly-sdk-html5/src/js/lib/animation-frame.js

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/*!
 * 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
 */
'use strict';
 
Object.defineProperty(exports, '__esModule', {
  value: true
});
var root = typeof window === 'undefined' ? global : window;
var rAF = root.requestAnimationFrame;
var cAF = root.cancelAnimationFrame;
 
var lastTime = 0;
var vendors = ['ms', 'moz', 'webkit', 'o'];
for (var x = 0; x < vendors.length && !rAF; ++x) {
  exports.requestAnimationFrame = rAF = root[vendors[x] + 'RequestAnimationFrame'];
  exports.cancelAnimationFrame = cAF = root[vendors[x] + 'CancelAnimationFrame'] || root[vendors[x] + 'CancelRequestAnimationFrame'];
}
 
Eif (!rAF) {
  exports.requestAnimationFrame = rAF = function (callback, element) {
    var currTime = new Date().getTime();
    var timeToCall = Math.max(0, 16 - (currTime - lastTime));
    var id = setTimeout(function () {
      callback(currTime + timeToCall);
    }, timeToCall);
    lastTime = currTime + timeToCall;
    return id;
  };
}
 
Eif (!cAF) {
  exports.cancelAnimationFrame = cAF = function (id) {
    clearTimeout(id);
  };
}
 
exports.requestAnimationFrame = rAF;
exports.cancelAnimationFrame = cAF;
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