userService.ts

export class UserService {
  private musers$ = new BehaviorSubject<User[]>([]);
  
  get users$(): Observable<any[]> {
    return this.musers$.asObservable();
  }

  constructor(private httpClient: HttpClient) {}

  getAll() {
    this.httpClient.get<User[]>("/api/users")
      .subscribe(users =>
        this.musers$.next(users)
      );
  }
}