React ES6 component creation

Hello.js

class App extends React.Component {
  static propTypes = {
    params: PropTypes.object.isRequired,
  };

  state = {
   ....
  };

  componentWillMount() {
   
  }

  componentWillUpdate(nextProps, nextState) {
   
  }

  componentWillReceiveProps(nextProps) {
   
  }

  componentDidMount() {
   .....
  }
  
  
  render (){
    
    return (....)
  }
}