ui: add a useless service worker

packages/ui-default/service-worker.ts

@@ -0,0 +1,14 @@
+/// <reference types="@types/serviceworker" />
+/* global clients */
+// eslint-disable-next-line no-restricted-globals
+addEventListener('notificationclick', (event) => {
+  console.log('On notification click: ', event.notification.tag);
+  event.notification.close();
+  if (!event.notification.tag.startsWith('message-')) return;
+  event.waitUntil(clients.matchAll({ type: 'window' }).then((clientList) => {
+    for (const client of clientList) {
+      if (client.url === '/home/messages' && 'focus' in client) return client.focus();
+    }
+    if (clients.openWindow) clients.openWindow('/home/messages');
+  }));
+});