reactjs店減速方式不正確

Question

我在我的reactjs應用此錯誤：

Store does not have a valid reducer. Make sure the argument passed to combineReducers is an object whose values are reducers.

我的店鋪看起來是這樣的：

import {applyMiddleware, combineReducers, createStore} from "redux"; 
import thunk from "redux-thunk"; 

const store = createStore(
    combineReducers({}), 
    applyMiddleware(thunk) 
); 

export default store; 

應該如何樣子是否正確？

Answer 1

你會得到這個錯誤，直到你添加一個減速器到combineReducers看下面的例子。

計數器減速 '/減速器/計數器'

export default (state = 0, action) => { 
    switch (action.type) { 
    case 'INCREMENT': 
    return state + 1; 
    case 'DECREMENT': 
    return state - 1; 
    default: 
    return state; 
    } 
}; 

商店

import {applyMiddleware, combineReducers, createStore} from "redux"; 
import thunk from "redux-thunk"; 
import counter from '/reducers/counter'; 

const store = createStore(
    combineReducers({counter}), 
    applyMiddleware(thunk) 
); 

export default store; 

Answer 2

如果你不打算使用減速機分解，那麼爲什麼要使用combineReducers？只需將以下函數定義爲您的唯一reducer並將其傳遞給createStore（）。

(state = {}, action) => { 
    switch (action.type) { 
    default: 
     return state 
    } 
} 

或者乾脆如果你只是希望它的工作如下：

(state = {}, action) => state