react-router

router.tsx

/** @jsx jsx */
import { jsx } from '@emotion/core'
import { BrowserRouter, Route, Switch } from 'react-router-dom'
import { render } from 'react-dom'
import { App } from './app'

render(
  <BrowserRouter>
    <Switch>
      <Route exact path="/">
        <App />
      </Route>
    </Switch>
  </BrowserRouter>,
  document.getElementById('app')
)