70 lines
2.4 KiB
JavaScript
70 lines
2.4 KiB
JavaScript
/*
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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 {logger} from 'workbox-core/_private/logger.mjs';
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import {getOrCreatePrecacheController} from './utils/getOrCreatePrecacheController.mjs';
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import {precachePlugins} from './utils/precachePlugins.mjs';
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import './_version.mjs';
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const installListener = (event) => {
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const precacheController = getOrCreatePrecacheController();
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const plugins = precachePlugins.get();
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event.waitUntil(
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precacheController.install({event, plugins})
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.catch((error) => {
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if (process.env.NODE_ENV !== 'production') {
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logger.error(`Service worker installation failed. It will ` +
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`be retried automatically during the next navigation.`);
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}
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// Re-throw the error to ensure installation fails.
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throw error;
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})
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);
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};
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const activateListener = (event) => {
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const precacheController = getOrCreatePrecacheController();
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const plugins = precachePlugins.get();
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event.waitUntil(precacheController.activate({event, plugins}));
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};
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/**
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* Adds items to the precache list, removing any duplicates and
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* stores the files in the
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* ["precache cache"]{@link module:workbox-core.cacheNames} when the service
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* worker installs.
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*
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* This method can be called multiple times.
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*
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* Please note: This method **will not** serve any of the cached files for you.
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* It only precaches files. To respond to a network request you call
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* [addRoute()]{@link module:workbox-precaching.addRoute}.
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*
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* If you have a single array of files to precache, you can just call
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* [precacheAndRoute()]{@link module:workbox-precaching.precacheAndRoute}.
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*
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* @param {Array<Object|string>} entries Array of entries to precache.
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*
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* @alias workbox.precaching.precache
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*/
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export const precache = (entries) => {
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const precacheController = getOrCreatePrecacheController();
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precacheController.addToCacheList(entries);
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if (entries.length > 0) {
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// NOTE: these listeners will only be added once (even if the `precache()`
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// method is called multiple times) because event listeners are implemented
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// as a set, where each listener must be unique.
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addEventListener('install', installListener);
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addEventListener('activate', activateListener);
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}
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};
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