Merge branch 'sw-200' into sw-notification-action

src/client/sw/sw.ts

@@ -32,7 +32,10 @@ self.addEventListener('activate', ev => {
 
 //#region When: Fetching
 self.addEventListener('fetch', ev => {
-	// Nothing to do
+	ev.respondWith(
+		fetch(ev.request)
+		.catch(() => new Response(`Offline. Service Worker @${version}`, { status: 200 }))
+	);
 });
 //#endregion