import { ActionReducerMap } from '@ngrx/store' ; import * as fromShop from './shop/shop.reducer' ; import * as fromBrandFilter from './brand-filter/brand-filter.reducer' ; import * as fromPriceFilter from './price-filter/price-filter.reducer' ; export interface AppState { shop : fromShop . State ; brandFilter : string ; orderBy : string ; } export const reducers = { shop : fromShop . shoppingListReducer , brandFilter : fromBrandFilter . brandFilterReducer , orderBy : fromPriceFilter . orderByPriceReducer } ;