How to use the smooth-scrollbar.initAll function in smooth-scrollbar

function init() {
    Scrollbar.initAll({
        damping: 1,
        continuousScrolling: false,
        alwaysShowTracks: true,
    });
}

componentDidMount() {
    this.sbs = ScrollBar.initAll()
    if (window.scrollHandlers) {
      window.scrollHandlers.forEach(handler => {
        this.sbs[0].addListener(handler)
      })
    }
    this.route = Router.router ? Router.router.pathname : ''
    this.forceUpdate()
  }