Добавлено уведомление о обновлении

PlaylistShared.Pwa/wwwroot/index.html

@@ -168,6 +168,15 @@
     <script src="_content/MudBlazor/MudBlazor.min.js"></script>
     <script src="_framework/blazor.webassembly#[.{fingerprint}].js"></script>
     <script>navigator.serviceWorker.register('service-worker.js', { updateViaCache: 'none' });</script>
+    <script>
+        function registerSWMessageHandler(dotNetHelper) {
+            navigator.serviceWorker.addEventListener('message', event => {
+                if (event.data && event.data.type === 'SW_ACTIVATED') {
+                    dotNetHelper.invokeMethodAsync('OnNewVersionAvailable');
+                }
+            });
+        }
+    </script>
 </body>
 
 </html>