/* Copyright 2018 Google LLC Use of this source code is governed by an MIT-style license that can be found in the LICENSE file or at https://opensource.org/licenses/MIT. */ import { WorkboxError } from 'workbox-core/_private/WorkboxError.js'; import '../_version.js'; // Name of the search parameter used to store revision info. const REVISION_SEARCH_PARAM = '__WB_REVISION__'; /** * Converts a manifest entry into a versioned URL suitable for precaching. * * @param {Object|string} entry * @return {string} A URL with versioning info. * * @private * @memberof workbox-precaching */ export function createCacheKey(entry) { if (!entry) { throw new WorkboxError('add-to-cache-list-unexpected-type', { entry }); } // If a precache manifest entry is a string, it's assumed to be a versioned // URL, like '/app.abcd1234.js'. Return as-is. if (typeof entry === 'string') { const urlObject = new URL(entry, location.href); return { cacheKey: urlObject.href, url: urlObject.href, }; } const { revision, url } = entry; if (!url) { throw new WorkboxError('add-to-cache-list-unexpected-type', { entry }); } // If there's just a URL and no revision, then it's also assumed to be a // versioned URL. if (!revision) { const urlObject = new URL(url, location.href); return { cacheKey: urlObject.href, url: urlObject.href, }; } // Otherwise, construct a properly versioned URL using the custom Workbox // search parameter along with the revision info. const cacheKeyURL = new URL(url, location.href); const originalURL = new URL(url, location.href); cacheKeyURL.searchParams.set(REVISION_SEARCH_PARAM, revision); return { cacheKey: cacheKeyURL.href, url: originalURL.href, }; }