react-loadable 实现 路由懒加载

// 路由懒加载 yarn add react-loadable     1       loadable.js         import React from 'react';         import Loadable from 'react-loadable';
        const LoadableComponent = Loadable({         loader: () => import('./index.js'),         loading() {             return          },         });
        // eslint -disable-next-line import/no-anonymous-default-export         export default () => 
    2         // import Detail from './pages/detail'         import Detail from './pages/detail/loadable'
    3         import { withRouter } from 'react-router-dom'         export default connect(mapState,mapDispatch)(withRouter(Detail))