Youtube in React: adding local state to video info Box

VideoInfoBox.js

export class VideoInfoBox extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      collapsed: true,
    };
  }

  render() {
    /* ... */
  }

  onToggleCollapseButtonClick = () => {
    this.setState((prevState) => {
      return {
        collapsed: !prevState.collapsed
      };
    });
  }
}