Youtube in React: get channel id in Watch

Watch.js

/* ... */
export class Watch extends React.Component {
  /* ... */
  render() {
    const videoId = this.getVideoId();
    return (
      <WatchContent videoId={videoId} channelId={this.props.channelId}/>
    );
  }
  /* ... */
}


function mapStateToProps(state, props) {
  return {
    youtubeLibraryLoaded: getYoutubeLibraryLoaded(state),
    channelId: getChannelId(state, props.location, 'v')
  };
}