Method getDerivedStateFromProps

src/TabContent.js:15–22

(nextProps, prevState)

class TabContent extends Component {
  static getDerivedStateFromProps(nextProps, prevState) {
    if (prevState.activeTab !== nextProps.activeTab) {
      return {
        activeTab: nextProps.activeTab,
      };
    }
    return null;
  }

  constructor(props) {
    super(props);