Isomorphic component

component.jsx

export default class IsomorphicComponent extends React.Component {
  // this only executes on the browser
  componentDidMount() {
    const wrapper = React.findDOMNode(this.refs.app);
    wrapper.style.left = wrapper.getBoundClientRect().left + 'px';
  }
  
  // this executes on the server and the browser
  render() {
    return (
      <div className="App" ref="App"></div>
    );
  }
}