const cacheVersion = 'v1';
const filesToCache = {!! json_encode($filesToCaches) !!};

self.addEventListener('install', event => {
console.log('[ServiceWorker] Install');
event.waitUntil(
caches.open(cacheVersion)
.then(cache => {
console.log('[ServiceWorker] Caching app shell');
return cache.addAll(filesToCache);
})
);
});

self.addEventListener('activate', event => {
console.log('[ServiceWorker] Activate');
});

self.addEventListener('fetch', event => {
console.log('[ServiceWorker] fetch', event.request);
event.respondWith(
caches.match(event.request)
.then(response => response || fetch(event.request))
);
});