Phase 1 PWA: prayer times, qibla, quran, hijri, tasbih, 99 names

node_modules/workbox-precaching/src/utils/deleteOutdatedCaches.ts

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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';
+
+// Give TypeScript the correct global.
+declare let self: ServiceWorkerGlobalScope;
+
+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: string,
+  substringToFind: string = SUBSTRING_TO_FIND,
+): Promise<string[]> => {
+  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};