/*
 * Kill-switch service worker.
 *
 * This app does not use a service worker. One was left registered on
 * localhost:3000 by a DIFFERENT project — service workers are scoped to an
 * origin, not a project, so any app later served on that port inherits it. It
 * intercepted requests and served dead chunks, which surfaced as
 * "Cannot read properties of undefined (reading 'call')" in RootLayout and
 * survived deleting .next and restarting the dev server.
 *
 * The browser re-fetches /sw.js to check for updates; serving this makes the
 * stale worker replace itself with one that immediately unregisters and drops
 * every cache it holds.
 */
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 clientList = await self.clients.matchAll({ type: 'window' });
      for (const client of clientList) client.navigate(client.url);
    })(),
  );
});