b10540a0b5
Service Workers can be tricky to work with in production, and often it becomes necessary to deactivate an existing SW. This is trickier than one might imagine - as long as clients on the old SW may exist it is important to serve some script at the old SW URL. This commit adds safety-worker.js to the published NPM package, which is useful for that purpose. On install the SW unregisters itself which safely and gradually allows older clients to update. PR Close #21863
18 lines
519 B
JavaScript
18 lines
519 B
JavaScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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// tslint:disable:no-console
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self.addEventListener('install', event => { self.skipWaiting(); });
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self.addEventListener('activate', event => {
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event.waitUntil(self.clients.claim());
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self.registration.unregister().then(
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() => { console.log('NGSW Safety Worker - unregistered old service worker'); });
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});
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