| 1 | /*
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| 2 | Copyright 2020 Google LLC
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| 3 |
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| 4 | Use of this source code is governed by an MIT-style
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| 5 | license that can be found in the LICENSE file or at
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| 6 | https://opensource.org/licenses/MIT.
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| 7 | */
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| 8 | import { registerRoute } from 'workbox-routing/registerRoute.js';
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| 9 | import { StaleWhileRevalidate } from 'workbox-strategies/StaleWhileRevalidate.js';
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| 10 | import { CacheFirst } from 'workbox-strategies/CacheFirst.js';
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| 11 | import { CacheableResponsePlugin } from 'workbox-cacheable-response/CacheableResponsePlugin.js';
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| 12 | import { ExpirationPlugin } from 'workbox-expiration/ExpirationPlugin.js';
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| 13 | import './_version.js';
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| 14 | /**
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| 15 | * An implementation of the [Google fonts]{@link https://developers.google.com/web/tools/workbox/guides/common-recipes#google_fonts} caching recipe
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| 16 | *
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| 17 | * @memberof workbox-recipes
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| 18 | *
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| 19 | * @param {Object} [options]
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| 20 | * @param {string} [options.cachePrefix] Cache prefix for caching stylesheets and webfonts. Defaults to google-fonts
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| 21 | * @param {number} [options.maxAgeSeconds] Maximum age, in seconds, that font entries will be cached for. Defaults to 1 year
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| 22 | * @param {number} [options.maxEntries] Maximum number of fonts that will be cached. Defaults to 30
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| 23 | */
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| 24 | function googleFontsCache(options = {}) {
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| 25 | const sheetCacheName = `${options.cachePrefix || 'google-fonts'}-stylesheets`;
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| 26 | const fontCacheName = `${options.cachePrefix || 'google-fonts'}-webfonts`;
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| 27 | const maxAgeSeconds = options.maxAgeSeconds || 60 * 60 * 24 * 365;
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| 28 | const maxEntries = options.maxEntries || 30;
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| 29 | // Cache the Google Fonts stylesheets with a stale-while-revalidate strategy.
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| 30 | registerRoute(({ url }) => url.origin === 'https://fonts.googleapis.com', new StaleWhileRevalidate({
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| 31 | cacheName: sheetCacheName,
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| 32 | }));
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| 33 | // Cache the underlying font files with a cache-first strategy for 1 year.
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| 34 | registerRoute(({ url }) => url.origin === 'https://fonts.gstatic.com', new CacheFirst({
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| 35 | cacheName: fontCacheName,
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| 36 | plugins: [
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| 37 | new CacheableResponsePlugin({
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| 38 | statuses: [0, 200],
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| 39 | }),
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| 40 | new ExpirationPlugin({
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| 41 | maxAgeSeconds,
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| 42 | maxEntries,
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| 43 | }),
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| 44 | ],
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| 45 | }));
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| 46 | }
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| 47 | export { googleFontsCache };
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