import React from 'react'
import { Route, Redirect, withRouter, } from 'react-router-dom'
import Loadable from 'react-loadable'
import CircularProgress from '@material-ui/core/CircularProgress'
// right
// import TopicList from 'views/topic-list'
// import TopicDetail from 'views/topic-detail'
// import TopicCreate from 'views/topic-create'
// import UserLogin from 'views/user/login'
// import UserInfo from 'views/user/info'
// wrong
const TopicList = Loadable({
 loader: () => import('views/topic-list'),
 loading() {
 return <CircularProgress />
 },
})
const TopicDetail = Loadable({
 loader: () => import('views/topic-detail'),
 loading() {
 return <CircularProgress />
 },
})
const TopicCreate = Loadable({
 loader: () => import('views/topic-create'),
 loading() {
 return <CircularProgress />
 },
})
const UserLogin = Loadable({
 loader: () => import('views/user/login'),
 loading() {
 return <CircularProgress />
 },
})
const UserInfo = Loadable({
 loader: () => import('views/user/info'),
 loading() {
 return <CircularProgress />
 },
})
export default () => [
 <Route exact render={() => <Redirect to="/list" />} path="/" key="home" />,
 <Route component={TopicList} path="/list" key="list" />,
 <Route component={TopicDetail} path="/detail/:id" key="detail" />,
]

{ Error: Cannot find module './0.server-entry.js'
 at Function.Module._resolveFilename (module.js:548:15)
 at Function.Module._load (module.js:475:25)
 at Module.require (module.js:597:17)
 at require (internal/module.js:11:18)
 at Function.requireEnsure [as e] (server-entry.js:46:25)
 at loader (webpack:///./client/router/index.jsx?:69:60)
 at load (/Users/ender/learning/github/react-cnode/node_modules/react-loadable/lib/index.js:28:17)
 at init (/Users/ender/learning/github/react-cnode/node_modules/react-loadable/lib/index.js:121:13)
 at new LoadableComponent (/Users/ender/learning/github/react-cnode/node_modules/react-loadable/lib/index.js:150:7)
 at /Users/ender/learning/github/react-cnode/node_modules/react-tree-walker/dist/react-tree-walker.js:174:30 code: 'MODULE_NOT_FOUND' }