React - TypeError：baseReducer 不是函数

Question

我正在使用 React 制作 SPA。我希望页面刷新后状态保持不变，所以我使用了“redux-persist”。我不知道我的 import 'allReducers' 是否错误，因为我收到的消息是 TypeError: baseReducer is not a function

import React from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import App from './components/App.jsx';
import * as serviceWorker from './serviceWorker';
import {Provider} from 'react-redux';
import {applyMiddleware, combineReducers, createStore} from "redux";
import {persistReducer, persistStore} from 'redux-persist';
import allReducers from './redux/store'
import {PersistGate} from 'redux-persist/integration/react';
import storage from 'redux-persist/lib/storage';
import thunk from "redux-thunk";


const persistConfig = {
    key: 'root',
    storage,
};

const persistedReducer = persistReducer(persistConfig, allReducers);
let store = createStore(persistedReducer, applyMiddleware(thunk));
let persistor = persistStore(store);


ReactDOM.render(<Provider store={store}>
                    <PersistGate loading={null} persistor={persistor}>
                        <App />
                    </PersistGate>
                </Provider>, document.getElementById('root'));

但最后当页面呈现时，我收到此消息TypeError: baseReducer is not a function

这是./redux/store

import { applyMiddleware, combineReducers, createStore } from 'redux'
import { ADD_TO_CART, GET_COURSE_LIST, USUARIO_LOGIN } from './action'
import { composeWithDevTools } from 'redux-devtools-extension'
import { persistStore, persistReducer } from 'redux-persist'
import thunk from 'redux-thunk'



const initialCart = {
    cart:[]
}

const initialCourses ={
    courses:[]
}

const initialUser ={
    user:{}
}

const cartReducer = ( state = initialCart,action) => {
    console.log(action)

    if(action.type===ADD_TO_CART)
    {

        if(state.cart.find(c=>c===action.id)) 
        {
            return state
        }

        return{
            ...state,
            cart: state.cart.concat(action.id),            
        }

    }
    return state

}

const coursesReducer = (state=initialCourses, action) =>{
    console.log(action)
    if(action.type === GET_COURSE_LIST){
        return {
            ...state,
            courses: action.courses
        }
    }
    return state
}

const userReducer = (state=initialUser, action)=>{
    console.log(action)
    if(action.type === USER_LOGIN){
        return {
            ...state,
            user: action.user
        }
    }
    return state

}

const storage = createStore(combineReducers({cartReducer, coursesReducer, userReducer}), composeWithDevTools(applyMiddleware(thunk)))

export default storage

Answer 1

该persistReducer函数需要一个减速器，而不是一个存储。

您可以单独从存储文件中导出您的减速器，或者如果您仅使用持久存储，则将其导出为默认值。下面是单独导出的示例：

./redux/store:

export const rootReducer = combineReducers({cartReducer, coursesReducer, userReducer})

const store = createStore(rootReducer, composeWithDevTools(applyMiddleware(thunk)))
export default store 

您的根组件文件：

import { rootReducer } from './redux/store'

// ...

const persistedReducer = persistReducer(persistConfig, rootReducer);
const store = createStore(persistedReducer, applyMiddleware(thunk));
const persistor = persistStore(store);