Home.js

const HomeHeader = () => {
  const intl = useIntl();
  return (
    <div className="Home-header">
      <img src={logo} className="Home-logo" alt="logo"/>
      <h2>{intl.formatMessage({id: 'home.welcome'}, {name: 'React.js'})}</h2>
    </div>
  )
};

class Home extends Component {
  render() {
    return (
      <div className="Home">
        <HomeHeader />
        ...