| 1 | /*
|
| 2 | Copyright 2018 Google LLC
|
| 3 |
|
| 4 | Use of this source code is governed by an MIT-style
|
| 5 | license that can be found in the LICENSE file or at
|
| 6 | https://opensource.org/licenses/MIT.
|
| 7 | */
|
| 8 | import { WorkboxError } from 'workbox-core/_private/WorkboxError.js';
|
| 9 | import '../_version.js';
|
| 10 | // Name of the search parameter used to store revision info.
|
| 11 | const REVISION_SEARCH_PARAM = '__WB_REVISION__';
|
| 12 | /**
|
| 13 | * Converts a manifest entry into a versioned URL suitable for precaching.
|
| 14 | *
|
| 15 | * @param {Object|string} entry
|
| 16 | * @return {string} A URL with versioning info.
|
| 17 | *
|
| 18 | * @private
|
| 19 | * @memberof workbox-precaching
|
| 20 | */
|
| 21 | export function createCacheKey(entry) {
|
| 22 | if (!entry) {
|
| 23 | throw new WorkboxError('add-to-cache-list-unexpected-type', { entry });
|
| 24 | }
|
| 25 | // If a precache manifest entry is a string, it's assumed to be a versioned
|
| 26 | // URL, like '/app.abcd1234.js'. Return as-is.
|
| 27 | if (typeof entry === 'string') {
|
| 28 | const urlObject = new URL(entry, location.href);
|
| 29 | return {
|
| 30 | cacheKey: urlObject.href,
|
| 31 | url: urlObject.href,
|
| 32 | };
|
| 33 | }
|
| 34 | const { revision, url } = entry;
|
| 35 | if (!url) {
|
| 36 | throw new WorkboxError('add-to-cache-list-unexpected-type', { entry });
|
| 37 | }
|
| 38 | // If there's just a URL and no revision, then it's also assumed to be a
|
| 39 | // versioned URL.
|
| 40 | if (!revision) {
|
| 41 | const urlObject = new URL(url, location.href);
|
| 42 | return {
|
| 43 | cacheKey: urlObject.href,
|
| 44 | url: urlObject.href,
|
| 45 | };
|
| 46 | }
|
| 47 | // Otherwise, construct a properly versioned URL using the custom Workbox
|
| 48 | // search parameter along with the revision info.
|
| 49 | const cacheKeyURL = new URL(url, location.href);
|
| 50 | const originalURL = new URL(url, location.href);
|
| 51 | cacheKeyURL.searchParams.set(REVISION_SEARCH_PARAM, revision);
|
| 52 | return {
|
| 53 | cacheKey: cacheKeyURL.href,
|
| 54 | url: originalURL.href,
|
| 55 | };
|
| 56 | }
|