36 lines
739 B
JavaScript
36 lines
739 B
JavaScript
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/**
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* requestAnimationFrame polyfill
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*/
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import { isServer } from '..';
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var prev = Date.now();
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/* istanbul ignore next */
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function fallback(fn) {
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var curr = Date.now();
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var ms = Math.max(0, 16 - (curr - prev));
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var id = setTimeout(fn, ms);
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prev = curr + ms;
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return id;
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}
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/* istanbul ignore next */
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var root = isServer ? global : window;
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/* istanbul ignore next */
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var iRaf = root.requestAnimationFrame || fallback;
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/* istanbul ignore next */
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var iCancel = root.cancelAnimationFrame || root.clearTimeout;
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export function raf(fn) {
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return iRaf.call(root, fn);
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} // double raf for animation
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export function doubleRaf(fn) {
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raf(function () {
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raf(fn);
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});
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}
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export function cancelRaf(id) {
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iCancel.call(root, id);
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}
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