code: function OverlayComponent(_ref) {
    var input = _ref.input,
        selectedDay = _ref.selectedDay,
        month = _ref.month,
        children = _ref.children,
        classNames = _ref.classNames,
        props = _objectWithoutProperties(_ref, ['input', 'selectedDay', 'month', 'children', 'classNames']);
  
    return _react2.default.createElement(
      'div',
      _extends({ className: classNames.overlayWrapper }, props),
      _react2.default.createElement(
        'div',
        { className: classNames.overlay },
        children
      )
    );
  }
docs: The default component used as Overlay.
  
  @param {Object} props