30 lines
756 B
JavaScript
30 lines
756 B
JavaScript
// Wrapper to call requestIdleCallback() to schedule low-priority work.
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// See https://developer.mozilla.org/en-US/docs/Web/API/Background_Tasks_API
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// for a good breakdown of the concepts behind this.
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import Queue from 'tiny-queue';
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const taskQueue = new Queue();
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let runningRequestIdleCallback = false;
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function runTasks(deadline) {
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while (taskQueue.length && deadline.timeRemaining() > 0) {
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taskQueue.shift()();
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}
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if (taskQueue.length) {
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requestIdleCallback(runTasks);
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} else {
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runningRequestIdleCallback = false;
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}
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}
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function scheduleIdleTask(task) {
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taskQueue.push(task);
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if (!runningRequestIdleCallback) {
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runningRequestIdleCallback = true;
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requestIdleCallback(runTasks);
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}
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}
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export default scheduleIdleTask;
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