hw-js-15-GraphQL-Redux/src/java-script/redux/goods/reducer/index.js

import { createReducer } from '@reduxjs/toolkit';

import {
  actionGoodsSuccess,
  actionGoodsReject,
  actionGoodSuccess,
  actionGoodReject,
} from '../action';

const initialState = { goods: [], good: {} };

const reducerGoods = createReducer(initialState, {
  [actionGoodsSuccess]: (state, { payload: goods }) => {
    const good = state.good;
    return { goods, good };
  },
  [actionGoodsReject]: (state, _) => {
    return state;
  },
  [actionGoodSuccess]: (state, { payload: good }) => {
    const goods = state.goods;
    return { goods, good };
  },
  [actionGoodReject]: (state, _) => {
    return state;
  },
});

export default reducerGoods;