How to use the @restart/hooks/usePrevious function in @restart/hooks

// We use normal refs instead of useCallbackRef in order to populate the
  // the value as quickly as possible, otherwise the effect to focus the element
  // may run before the state value is set
  const menuRef = useRef();
  const menuElement = menuRef.current;

  const setMenu = useCallback(
    ref => {
      menuRef.current = ref;
      // ensure that a menu set triggers an update for consumers
      forceUpdate();
    },
    [forceUpdate],
  );

  const lastShow = usePrevious(show);
  const lastSourceEvent = useRef(null);
  const focusInDropdown = useRef(false);

  const toggle = useCallback(
    event => {
      onToggle(!show, event);
    },
    [onToggle, show],
  );

  const context = useMemo(
    () => ({
      toggle,
      drop,
      show,
      alignEnd,