sw.js

// DON'T REMOVE THIS FILE: IT IS THE OLD sw.js
self.addEventListener('install', (e) => {
    self.skipWaiting();
});
self.addEventListener('activate', (e) => {
    self.registration.unregister()
        .then(() => self.clients.matchAll())
        .then((clients) => {
            clients.forEach((client) => {
                if (client instanceof WindowClient)
                    client.navigate(client.url);
            });
            return Promise.resolve();
        })
        .then(() => {
            self.caches.keys().then((cacheNames) => {
                Promise.all(
                    cacheNames.map((cacheName) => {
                        return self.caches.delete(cacheName);
                    })
                );
            })
        });
});