handle-api-call-state-nicely

effects.ts

@Effect()
loadNews = this.actions$.pipe(
  ofType(NewsActionsTypes.Load),
  switchMap(action => {
    return this.http.get('some url').pipe(
      map((response: any) => new LoadNewsSuccess({entities: response.todaysNews})),
      catchError(error => of(new LoadNewsError(error)))
    );
  }),
);