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51 lines
2.2 KiB
Text
51 lines
2.2 KiB
Text
/*
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Copyright 2020 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 { warmStrategyCache } from './warmStrategyCache';
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import { registerRoute } from 'workbox-routing/registerRoute.js';
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import { CacheFirst } from 'workbox-strategies/CacheFirst.js';
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import { CacheableResponsePlugin } from 'workbox-cacheable-response/CacheableResponsePlugin.js';
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import { ExpirationPlugin } from 'workbox-expiration/ExpirationPlugin.js';
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import './_version.js';
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/**
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* An implementation of the [image caching recipe]{@link https://developers.google.com/web/tools/workbox/guides/common-recipes#caching_images}
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*
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* @memberof workbox-recipes
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*
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* @param {Object} [options]
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* @param {string} [options.cacheName] Name for cache. Defaults to images
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* @param {RouteMatchCallback} [options.matchCallback] Workbox callback function to call to match to. Defaults to request.destination === 'image';
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* @param {number} [options.maxAgeSeconds] Maximum age, in seconds, that font entries will be cached for. Defaults to 30 days
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* @param {number} [options.maxEntries] Maximum number of images that will be cached. Defaults to 60
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* @param {WorkboxPlugin[]} [options.plugins] Additional plugins to use for this recipe
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* @param {string[]} [options.warmCache] Paths to call to use to warm this cache
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*/
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function imageCache(options = {}) {
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const defaultMatchCallback = ({ request }) => request.destination === 'image';
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const cacheName = options.cacheName || 'images';
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const matchCallback = options.matchCallback || defaultMatchCallback;
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const maxAgeSeconds = options.maxAgeSeconds || 30 * 24 * 60 * 60;
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const maxEntries = options.maxEntries || 60;
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const plugins = options.plugins || [];
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plugins.push(new CacheableResponsePlugin({
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statuses: [0, 200],
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}));
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plugins.push(new ExpirationPlugin({
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maxEntries,
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maxAgeSeconds,
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}));
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const strategy = new CacheFirst({
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cacheName,
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plugins,
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});
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registerRoute(matchCallback, strategy);
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// Warms the cache
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if (options.warmCache) {
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warmStrategyCache({ urls: options.warmCache, strategy });
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}
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}
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export { imageCache };
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