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41 lines
1.2 KiB
Text
41 lines
1.2 KiB
Text
/*
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Copyright 2019 Google LLC
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Use of this source code is governed by an MIT-style
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license that can be found in the LICENSE file or at
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https://opensource.org/licenses/MIT.
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*/
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import {cacheNames} from 'workbox-core/_private/cacheNames.js';
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import {logger} from 'workbox-core/_private/logger.js';
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import {deleteOutdatedCaches} from './utils/deleteOutdatedCaches.js';
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import './_version.js';
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/**
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* Adds an `activate` event listener which will clean up incompatible
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* precaches that were created by older versions of Workbox.
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*
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* @memberof workbox-precaching
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*/
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function cleanupOutdatedCaches(): void {
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// See https://github.com/Microsoft/TypeScript/issues/28357#issuecomment-436484705
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self.addEventListener('activate', ((event: ExtendableEvent) => {
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const cacheName = cacheNames.getPrecacheName();
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event.waitUntil(
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deleteOutdatedCaches(cacheName).then((cachesDeleted) => {
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if (process.env.NODE_ENV !== 'production') {
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if (cachesDeleted.length > 0) {
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logger.log(
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`The following out-of-date precaches were cleaned up ` +
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`automatically:`,
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cachesDeleted,
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);
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}
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}
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}),
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);
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}) as EventListener);
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}
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export {cleanupOutdatedCaches};
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