ant-design/components/float-button/index.tsx

import BackTop from './BackTop';
import FloatButton from './FloatButton';
import FloatButtonGroup from './FloatButtonGroup';
import PurePanel from './PurePanel';

FloatButton.BackTop = BackTop;
FloatButton.Group = FloatButtonGroup;
FloatButton._InternalPanelDoNotUseOrYouWillBeFired = PurePanel;

export default FloatButton;