1. notification via SW 2.manifest json for home screen app 3. icons for mobile/desktop shortcut app

src/plugins/notificationAndServiceWorker.js

@@ -0,0 +1,29 @@
+const registerServiceWorker = async () => {
+  const swRegistration = await navigator.serviceWorker.register("/sw.js");
+  return swRegistration;
+};
+
+const requestNotificationPermission = async () => {
+  // return value: 'granted', 'default', 'denied'
+  return await window.Notification.requestPermission();
+};
+
+export async function requestNotificationAndServiceWorker() {
+  if (!("serviceWorker" in navigator)) {
+    throw new Error("No Service Worker support!");
+  }
+  if (!("PushManager" in window)) {
+    throw new Error("No Push API Support!");
+  }
+  const permission = await requestNotificationPermission();
+  if(permission==='granted') await registerServiceWorker();
+  return permission
+}
+
+export function windowNotificationPermission() {
+  return window.Notification.permission
+}
+
+export function notificationCount() {
+  return this.$matrix.notificationCount
+}