todo-list.effects.ts

todo-list.effects.ts

@Injectable()
export class TodoListEffects {
  constructor(private actions$: Actions, private todoListService: TodoListService) {}

  @Effect()
  loadTodoList$ = this.actions$.pipe(
    ofType(TodoListActionTypes.LoadTodoList),
    exhaustMap(() => this.todoListService.getTodos()),
    map((todoList) => new TodoItemsLoaded(todoList)),
    catchError((error: Error) => of(new TodoItemsLoadFailed(error)))
  );
}