React项目报错：Error: It looks like you are passing several store enhancers to createStore(). 解决

 

 解决方案：

以前 createStore 集成 redux-devtool 的时候提供 3 个参数, 现在需要将后面的 middleware 全部包裹起来:

import { createStore, compose, applyMiddleware } from 'redux';
import thunk from 'redux-thunk';
import reducer from './reducer';

// 加一行
const composeEnhancers = window.__REDUX_DEVTOOLS_EXTENSION_COMPOSE__ ? 
    window.__REDUX_DEVTOOLS_EXTENSION_COMPOSE__({}) : compose;

// 使用 composeEnhancer 包裹之前的 Middleware 然后传递给第二个参数。
const store = createStore(
    reducer,
    composeEnhancers(),
    applyMiddleware(thunk)
)

export default store;