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56 lines
1.8 KiB
56 lines
1.8 KiB
/* |
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Copyright 2018 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 { WorkboxError } from 'workbox-core/_private/WorkboxError.js'; |
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import '../_version.js'; |
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// Name of the search parameter used to store revision info. |
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const REVISION_SEARCH_PARAM = '__WB_REVISION__'; |
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/** |
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* Converts a manifest entry into a versioned URL suitable for precaching. |
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* |
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* @param {Object|string} entry |
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* @return {string} A URL with versioning info. |
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* |
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* @private |
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* @memberof workbox-precaching |
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*/ |
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export function createCacheKey(entry) { |
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if (!entry) { |
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throw new WorkboxError('add-to-cache-list-unexpected-type', { entry }); |
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} |
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// If a precache manifest entry is a string, it's assumed to be a versioned |
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// URL, like '/app.abcd1234.js'. Return as-is. |
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if (typeof entry === 'string') { |
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const urlObject = new URL(entry, location.href); |
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return { |
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cacheKey: urlObject.href, |
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url: urlObject.href, |
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}; |
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} |
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const { revision, url } = entry; |
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if (!url) { |
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throw new WorkboxError('add-to-cache-list-unexpected-type', { entry }); |
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} |
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// If there's just a URL and no revision, then it's also assumed to be a |
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// versioned URL. |
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if (!revision) { |
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const urlObject = new URL(url, location.href); |
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return { |
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cacheKey: urlObject.href, |
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url: urlObject.href, |
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}; |
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} |
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// Otherwise, construct a properly versioned URL using the custom Workbox |
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// search parameter along with the revision info. |
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const cacheKeyURL = new URL(url, location.href); |
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const originalURL = new URL(url, location.href); |
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cacheKeyURL.searchParams.set(REVISION_SEARCH_PARAM, revision); |
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return { |
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cacheKey: cacheKeyURL.href, |
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url: originalURL.href, |
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}; |
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}
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