use-bound-link.js

function useBoundLink( source ){
    // If the source is another Link, extract the value out of it.
    const value = source instanceof Link ? source.value : source,
          link = useLink( value );

    // If the value changes, execute link.set( value ) after the render.
    useEffect(() => link.set( value ), [ value ]);

    return link;
}