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33 lines
960 B
33 lines
960 B
/**
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* Copyright (c) Nicolas Gallagher.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @flow
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*/
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import canUseDOM from '../canUseDom';
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const _requestIdleCallback = function (cb: Function, options?: Object) {
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return setTimeout(() => {
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const start = Date.now();
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cb({
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didTimeout: false,
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timeRemaining() {
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return Math.max(0, 50 - (Date.now() - start));
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}
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});
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}, 1);
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};
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const _cancelIdleCallback = function (id) {
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clearTimeout(id);
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};
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const isSupported = canUseDOM && typeof window.requestIdleCallback !== 'undefined';
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const requestIdleCallback: (cb: any, options?: any) => TimeoutID = isSupported ? window.requestIdleCallback : _requestIdleCallback;
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const cancelIdleCallback: (TimeoutID) => void = isSupported ? window.cancelIdleCallback : _cancelIdleCallback;
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export default requestIdleCallback;
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export { cancelIdleCallback }; |