如何在@ngrx/effects中等待2个动作

import { Injectable } from '@angular/core';
import { Actions, createEffect, ofType } from '@ngrx/effects';
import { of } from 'rxjs';
import { catchError, map, mergeMap, withLatestFrom } from 'rxjs/operators';
import { Store } from '@ngrx/store';
import { ActionOne, ActionTwo, actionOneSuccess, actionTwoSuccess } from './actions';

@Injectable()
export class MyEffects {
  constructor(
    private actions$: Actions,
    private store: Store<any>
  ) {}

  // Effect to wait for ActionOne and ActionTwo to complete
  myEffect$ = createEffect(() =>
    this.actions$.pipe(
      ofType(ActionOne, ActionTwo),
      withLatestFrom(
        this.store.select(state => state.actionOneCompleted), // Selector for ActionOne completion
        this.store.select(state => state.actionTwoCompleted)  // Selector for ActionTwo completion
      ),
      filter(([action, actionOneDone, actionTwoDone]) => actionOneDone && actionTwoDone),
      map(() => {
        // Both actions are completed, perform your operation here
        return { type: 'BOTH_ACTIONS_COMPLETED' };
      }),
      catchError(error => of({ type: 'ERROR_OCCURRED', payload: error }))
    )
  );
}