index.ts

  import * as fromRoot from '../../../core/store/reducers';
  import * as fromIpfsUpload from './ipfs-upload.reducer';
  import * as fromProducts from './purchase-contract.reducer';

  export interface PurchaseContractState {
    ipfsUpload: fromIpfsUpload.State;
    products: fromProducts.State
  }
   
  export interface AppState extends fromRoot.AppState {  
    purchaseContract: PurchaseContractState;
  }
  
  export function reducers(state: PurchaseContractState | undefined, action: Action) {
    return combineReducers({
      ipfsUpload: fromIpfsUpload.reducer,
      products: fromProducts.reducer
    })(state, action);
  }