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/*
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 '../_version.js';
const SUBSTRING_TO_FIND = '-precache-';
/**
* Cleans up incompatible precaches that were created by older versions of
* Workbox, by a service worker registered under the current scope.
*
* This is meant to be called as part of the `activate` event.
*
* This should be safe to use as long as you don't include `substringToFind`
* (defaulting to `-precache-`) in your non-precache cache names.
*
* @param {string} currentPrecacheName The cache name currently in use for
* precaching. This cache won't be deleted.
* @param {string} [substringToFind='-precache-'] Cache names which include this
* substring will be deleted (excluding `currentPrecacheName`).
* @return {Array<string>} A list of all the cache names that were deleted.
*
* @private
* @memberof workbox-precaching
*/
const deleteOutdatedCaches = async (currentPrecacheName, substringToFind = SUBSTRING_TO_FIND) => {
const cacheNames = await self.caches.keys();
const cacheNamesToDelete = cacheNames.filter((cacheName) => {
return (cacheName.includes(substringToFind) &&
cacheName.includes(self.registration.scope) &&
cacheName !== currentPrecacheName);
});
await Promise.all(cacheNamesToDelete.map((cacheName) => self.caches.delete(cacheName)));
return cacheNamesToDelete;
};
export { deleteOutdatedCaches };