service worker

service-worker.js

@@ -0,0 +1,22 @@
+ const cacheName = 'minimal-pwa-v1';
+ const assets = [
+   './',
+   './index.html',
+   './manifest.json'
+ ];
+ 
+ self.addEventListener('install', (event) => {
+   event.waitUntil(
+     caches.open(cacheName).then((cache) => {
+       return cache.addAll(assets);
+     })
+   );
+ });
+ 
+ self.addEventListener('fetch', (event) => {
+   event.respondWith(
+     caches.match(event.request).then((response) => {
+       return response || fetch(event.request);
+     })
+   );
+ });