Generate some nice Effects

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Notice! using effects to load data is a antipattern!

read more about this here

• Define a Effect class
• Define a Action when you are waiting for Books
• Define a effect which Triggers the BookDataService.getBooks()
• Import EffektsModule in your Rootmodule EffectsModule.forRoot([]),
• Import EffektsModule in your BookModule EffectsModule.forFeature([BookEffects]),

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Book Effect Class

@Injectable()
export class BookEffects {
  constructor(private actions: Actions, private service: BookDataService) {}
}

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Effect

  @Effect({ dispatch: false })
  loadBooks = this.actions.pipe(
    ofType(WAIT_FOR_BOOKS),
    tap(() => this.service.loadBooks())
  );

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