hot-toast-2.example.ts

import { HotToastService } from '@ngneat/hot-toast';

@Component({})
export class AppComponent {
  constructor(private toast: HotToastService, 
              private usersService: UsersService) {}

  update() {
    this.usersService.updateUser().pipe(
      this.toast.observe({
         loading: 'Updating...',
         success: '🚀',
         error: '😡'
      })
    ).subcribe()
  }
}