update to nuxt 4

app/composables/notifications.ts

@@ -0,0 +1,12 @@
+import type { NotificationModel } from "~~/prisma/client/models";
+
+const ws = new WebSocketHandler("/api/v1/notifications/ws");
+
+export const useNotifications = () =>
+  useState<Array<NotificationModel>>("notifications", () => []);
+
+ws.listen((e) => {
+  const notification = JSON.parse(e) as NotificationModel;
+  const notifications = useNotifications();
+  notifications.value.push(notification);
+});