Updates

frontend/public/sw.js

@@ -0,0 +1,23 @@
+const CACHE_NAME = 'rezepte-v1';
+const ASSETS = [
+  '/',
+  '/index.html',
+];
+
+self.addEventListener('install', (event) => {
+  event.waitUntil(caches.open(CACHE_NAME).then((cache) => cache.addAll(ASSETS)));
+});
+
+self.addEventListener('fetch', (event) => {
+  event.respondWith(
+    caches.match(event.request).then((response) => response || fetch(event.request))
+  );
+});
+
+self.addEventListener('activate', (event) => {
+  event.waitUntil(
+    caches.keys().then((keys) =>
+      Promise.all(keys.filter((key) => key !== CACHE_NAME).map((key) => caches.delete(key)))
+    )
+  );
+});