Mark all notifications as seen syncs all tabs

scripts/Actions/Notifications.ts

@@ -30,7 +30,16 @@ export async function markNotificationsAsSeen(arn: AnimeNotifier) {
 	})
 
 	// Update notification counter
-	arn.notificationManager.update()
+	if(!("serviceWorker" in navigator)) {
+		// If there is no service worker, update the counter on this tab
+		arn.notificationManager.update()
+	} else {
+		// If we have service worker support, broadcast the "notifications marked as seen" message to all open tabs
+		arn.serviceWorkerManager.postMessage({
+			type: "broadcast",
+			realType: "notifications marked as seen"
+		})
+	}
 
 	// Update notifications
 	arn.reloadContent()