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// Source: https://gist.github.com/paulirish/1579671
(function () {
let lastTime = 0;
const vendors = ['ms', 'moz', 'webkit', 'o'];
for (let 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) {
const currTime = new Date().getTime();
const timeToCall = Math.max(0, 16 - (currTime - lastTime));
const id = window.setTimeout(
() => { callback(currTime + timeToCall); },
timeToCall,
);
lastTime = currTime + timeToCall;
return id;
};
}
if (!window.cancelAnimationFrame) {
window.cancelAnimationFrame = function (id) {
clearTimeout(id);
};
}
}());
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