ngrx angularfire设置问题

我在Angular 7上，不断出现以下错误：

错误：22，51 TS2339:类型“Actions”上不存在属性“ofType”

在学习本教程时：

对该功能的支持是否已更改

  @Effect()
  googleSignIn: Observable<Action> = this.actions.ofType(authActions.GOOGLE_LOGIN)
    .map((action: authActions.GoogleLogin) => action.payload)
    .switchMap(payload => {
      return Observable.fromPromise(this.authService.googleSignIn());
    })
    .catch(err => {
      return Observable.of(new authActions.AuthError({ error: err.message }));
    });

---

由于RxJs 6.x，您应该编写如下内容：

@Effect()
  googleSignIn: Observable<Action> = this.actions.pipe( 
    ofType(authActions.GOOGLE_LOGIN),
    map((action: authActions.GoogleLogin) => action.payload),
    switchMap(payload => {
      return Observable.fromPromise(this.authService.googleSignIn());
    }),
    catchError(err => {
      return Observable.of(new authActions.AuthError({ error: err.message }));
    }),
  );

---

那篇教程已经有将近2年的历史了。它过时了。查找更新的学习资源。谢谢。我现在得到这个错误：错误TS2345:类型为'type of GoogleSignIn'的参数不能分配给类型为'string | ActionCreator'的参数。

src/app/modules/auth/auth.effects.ts(20,12): error TS2345: Argument of type 'type
of GoogleSignIn' is not assignable to parameter of type 'string | ActionCreator<s
tring, FunctionWithParametersType<any[], object>>'.
  Type 'typeof GoogleSignIn' is not assignable to type 'ActionCreator<string, Fun
ctionWithParametersType<any[], object>>'.
    Type 'typeof GoogleSignIn' is not assignable to type 'FunctionWithParametersT
ype<any[], object>'.
      Type 'typeof GoogleSignIn' provides no match for the signature '(...args: any[]): object'.

import { User } from '../shared/models/user';
import * as authActions from './auth.actions';

const defaultUser = new User(null, 'GUEST');

export type Action = authActions.All;

export function authReducer(state: User = defaultUser, action: Action) {
  switch (action.type) {
    case authActions.GET_USER:
      return { ...state };

    case authActions.AUTHENTICATED:
      return { ...state, ...action.payload };

    case authActions.NOT_AUTHENTICATED:
      return { ...state, ...defaultUser};

    case authActions.GOOGLE_SIGNIN:
      return { ...state, loading: true };

    case authActions.AUTH_ERROR:
      return { ...state, ...action.payload, loading: false };

    case authActions.LOGOUT:
      return { ...state, loading: true };
  }
}

@Effect()
  googleSignIn: Observable<Action> = this.actions.pipe( 
    ofType(authActions.GOOGLE_LOGIN),
    map((action: authActions.GoogleLogin) => action.payload),
    switchMap(payload => {
      return Observable.fromPromise(this.authService.googleSignIn());
    }),
    catchError(err => {
      return Observable.of(new authActions.AuthError({ error: err.message }));
    }),
  );