// Retired service worker location (the app now uses /sw-<build>.js). Devices that
// still run the old worker get this one as an update: it removes itself and
// reloads open windows, which then register the current worker.
self.addEventListener("install", () => self.skipWaiting());
self.addEventListener("activate", (event) => {
  event.waitUntil(
    (async () => {
      const keys = await caches.keys();
      await Promise.all(keys.map((k) => caches.delete(k)));
      await self.registration.unregister();
      const windows = await self.clients.matchAll({ type: "window" });
      windows.forEach((w) => w.navigate(w.url));
    })(),
  );
});