app\static\js\AppRouter(2).jsx

#...

import Header from './components/Header'

const mapStateToProps = state => {
  return {
    #...
    currentUser: state.common.currentUser
  }
};

class AppRouter extends Component {
  
  render() {
    return (
      <HashRouter>
        <div className="app">
          <Header
            currentUser={this.props.currentUser}
            appName={this.props.appName}/>
        </div>
      </HashRouter>
      )
   }
}

#...