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));

});