57 lines
1.8 KiB
JavaScript
57 lines
1.8 KiB
JavaScript
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/*
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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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