auth.effect.ts

@Effect()
doLogin$: Observable<Action> = this.actions$
  .ofType(actions.ActionTypes.DO_LOGIN)
  .map((action: actions.DoLoginAction) => action.payload)
  .switchMap(state => {
    return this.authApiClient.login(state)
      .map(user => new actions.DoLoginSuccessAction(new User(user)))
      .catch(error => of(new actions.DoLoginFailAction()));
  });