Set document title from react node

Title.js

class Title extends React.PureComponent {
  domNode = document.createElement('div');
  // ^ it's not added to the document
  
  componentDidMount() {
    this.componentDidUpdate();
  }

  componentDidUpdate() {
    document.title = this.domNode.textContent || ':(';
  }

  render() {
    return ReactDOM.createPortal(
      this.props.children,
      this.domNode
    );
  }
}