content: import React from 'react';
  import { Switch, Route } from 'react-router';
  
  import MainPage from './containers/MainPage';
  import LoginPage from './containers/LoginPage';
  import HistoryPage from './containers/HistoryPage';
  import SettingPage from './containers/SettingPage';
  
  export default (
    <Switch>
      <Route exact path="/" component={MainPage} />
      <Route exact path="/loggedin" component={MainPage} />
      <Route exact path="/login" component={LoginPage} />
      <Route exact path="/history" component={HistoryPage} />
      <Route exact path="/setting" render={() => <SettingPage/>} />
    </Switch>
  );
  