workaround for importing mantine extensions (such as @mantine/notifications) in a pure esm, vite project and get types working

mantine.d.ts

import { Notification } from 'node_modules/@mantine/notifications/lib/Notifications.d.ts';
import { notifications } from 'node_modules/@mantine/notifications/lib/notifications.store.d.ts';

declare module '@mantine/notifications' {
  export = { Notification, notifications };
}