initial commit

static/sw.js

@@ -0,0 +1,16 @@
+const CACHE = 'ponomar-v1';
+
+self.addEventListener('install', (e) => {
+  e.waitUntil(caches.open(CACHE).then(c => c.addAll(['/index.html'])));
+  self.skipWaiting();
+});
+
+self.addEventListener('activate', (e) => {
+  e.waitUntil(clients.claim());
+});
+
+self.addEventListener('fetch', (e) => {
+  e.respondWith(
+    caches.match(e.request).then(r => r || fetch(e.request))
+  );
+});