Function clearAllCaches

packages/service-worker/worker/testing/cache.ts:215–229

(caches: CacheStorage)

// while the SW is still running (e.g. serving another tab) and keeps references to the deleted
// caches.
export async function clearAllCaches(caches: CacheStorage): Promise<void> {
  const cacheNames = await caches.keys();
  const cacheInstances = await Promise.all(cacheNames.map((name) => caches.open(name)));

  // Delete all cache instances from `CacheStorage`.
  await Promise.all(cacheNames.map((name) => caches.delete(name)));

  // Delete all entries from each cache instance.
  await Promise.all(
    cacheInstances.map(async (cache) => {
      const keys = await cache.keys();
      await Promise.all(keys.map((key) => cache.delete(key)));
    }),
  );
}