39 lines
1.4 KiB
TypeScript
39 lines
1.4 KiB
TypeScript
/*
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* https://github.com/morethanwords/tweb
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* Copyright (C) 2019-2021 Eduard Kuzmenko
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* https://github.com/morethanwords/tweb/blob/master/LICENSE
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*/
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export const isWebWorker = typeof WorkerGlobalScope !== 'undefined' && self instanceof WorkerGlobalScope;
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export const isServiceWorker = typeof ServiceWorkerGlobalScope !== 'undefined' && self instanceof ServiceWorkerGlobalScope;
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export const isWorker = isWebWorker || isServiceWorker;
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// в SW может быть сразу две переменных TRUE, поэтому проверяю по последней
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const notifyServiceWorker = (all: boolean, ...args: any[]) => {
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(self as any as ServiceWorkerGlobalScope)
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.clients
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.matchAll({ includeUncontrolled: false, type: 'window' })
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.then((listeners) => {
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if(!listeners.length) {
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//console.trace('no listeners?', self, listeners);
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return;
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}
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listeners.slice(all ? 0 : -1).forEach(listener => {
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// @ts-ignore
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listener.postMessage(...args);
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});
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});
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};
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const notifyWorker = (...args: any[]) => {
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// @ts-ignore
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(self as any as DedicatedWorkerGlobalScope).postMessage(...args);
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};
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const noop = () => {};
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export const notifySomeone = isServiceWorker ? notifyServiceWorker.bind(null, false) : (isWebWorker ? notifyWorker : noop);
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export const notifyAll = isServiceWorker ? notifyServiceWorker.bind(null, true) : (isWebWorker ? notifyWorker : noop);
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