42 lines
1.0 KiB
JavaScript
42 lines
1.0 KiB
JavaScript
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import canUseDOM from './canUseDOM';
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/* https://github.com/component/raf */
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var prev = new Date().getTime();
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function fallback(fn) {
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var curr = new Date().getTime();
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var ms = Math.max(0, 16 - (curr - prev));
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var handle = setTimeout(fn, ms);
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prev = curr;
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return handle;
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}
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var vendors = ['', 'webkit', 'moz', 'o', 'ms'];
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var cancelMethod = 'clearTimeout';
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var rafImpl = fallback; // eslint-disable-next-line import/no-mutable-exports
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var getKey = function getKey(vendor, k) {
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return vendor + (!vendor ? k : k[0].toUpperCase() + k.substr(1)) + "AnimationFrame";
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};
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if (canUseDOM) {
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vendors.some(function (vendor) {
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var rafMethod = getKey(vendor, 'request');
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if (rafMethod in window) {
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cancelMethod = getKey(vendor, 'cancel'); // @ts-ignore
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rafImpl = function rafImpl(cb) {
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return window[rafMethod](cb);
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};
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}
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return !!rafImpl;
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});
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}
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export var cancel = function cancel(id) {
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// @ts-ignore
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if (typeof window[cancelMethod] === 'function') window[cancelMethod](id);
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};
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export var request = rafImpl;
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