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29 lines
535 B
JavaScript
29 lines
535 B
JavaScript
/* eslint-disable more/no-then */
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// eslint-disable-next-line func-names
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(function() {
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'use strict';
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class JobQueue {
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constructor() {
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this.pending = Promise.resolve();
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}
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add(job) {
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const previous = this.pending || Promise.resolve();
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this.pending = previous.then(job, job);
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const current = this.pending;
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current.then(() => {
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if (this.pending === current) {
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delete this.pending;
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}
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});
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return current;
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}
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}
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window.JobQueue = JobQueue;
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})();
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