ngrx 8:在单个效果中调度多个动作

import { Injectable } from '@angular/core';
import { Actions, createEffect, ofType } from '@ngrx/effects';
import { map, mergeMap } from 'rxjs/operators';

@Injectable()
export class MyEffects {
  myEffect$ = createEffect(() =>
    this.actions$.pipe(
      ofType('FETCH_DATA'), // 监听FETCH_DATA动作
      mergeMap(() =>
        this.dataService.getData().pipe(
          map(data => ({
            type: 'FETCH_DATA_SUCCESS',
            payload: data
          })),
          // 在这里可以继续调度其他动作
          map(() => ({
            type: 'OTHER_ACTION'
          }))
        )
      )
    )
  );

  constructor(private actions$: Actions, private dataService: DataService) {}
}