react加载报错

react在加载时会在后台出现类似错误：

Warning: LikeButton: React.createClass is deprecated and will be removed in version 16. Use plain JavaScript classes instead. If you’re not yet ready to migrate, create-react-class is available on npm as a drop-in replacement.

解决办法：npm install –save react@15.4.0 react-dom@15.4.0

错误原因：警告：likebutton：React.createClass是过时的，将在16版本中移除。使用纯JavaScript类代替。如果你没有准备好迁移，创造反应类可在NPM下降更换。将react降级即可！

批注 2020-03-16 233610.png

解决方法
【原因】没有添加 thunk 中间件

【解决方法】在入口文件中添加中间件，并在 createStore 时进行注册：

import thunkMiddleware from 'redux-thunk'
const createStoreWithMiddleware = applyMiddleware(loggerMiddleware, thunkMiddleware)(createStore)