Example of keydown decorator at https://github.com/jedverity/react-keydown/

keydown.js

class MyComponent extends React.Component {
  @keydown('up')
  goUp(event) {
    event.preventDefault();
    this.setState({ index: -1 });
  }
}

// as a higher-order component
@keydown( 'up', 'down', 'shift+enter' )
class MyComponent extends React.Component {
  componentWillReceiveProps( { keydown } ) {
    if ( keydown.event ) {
      console.log( keydown.event.which );
    }
  }
}