self.addEventListener('install', (event) => {
console.log('👷', 'install', event); self.skipWaiting();
});
self.addEventListener('activate', (event) => {
console.log('👷', 'activate', event); return self.clients.claim();
});
self.addEventListener('fetch', function(event) {
// console.log('👷', 'fetch', event); event.respondWith(fetch(event.request));
});