DefinitelyTyped/types/react-smooth-scrollbar/react-smooth-scrollbar-tests.tsx

import * as React from "react";
import * as SmoothScrollbar from "react-smooth-scrollbar";

<SmoothScrollbar className="test" alwaysShowTracks onScroll={(status, instance) => { } } />;
<SmoothScrollbar speed={10} overscrollEffect="bounce" />;

class Test extends React.Component {
    ref: SmoothScrollbar | null;

    componentDidMount() {
        if (this.ref) {
            this.ref.scrollbar.scrollTo(0, 500);
        }
    }

    render() {
        return (
            <SmoothScrollbar ref={ref => this.ref = ref} />
        );
    }
}