fix ci compile error

components/modal/ActionButton.tsx

@@ -1,6 +1,7 @@
 import React from 'react';
 import ReactDOM from 'react-dom';
-import Button, { ButtonType } from '../button';
+import Button from '../button';
+import { ButtonType } from '../button/button';
 
 export interface ActionButtonProps {
   type?: ButtonType;

components/modal/Modal.tsx

@@ -2,7 +2,8 @@ import React from 'react';
 import Dialog from 'rc-dialog';
 import PropTypes from 'prop-types';
 import addEventListener from 'rc-util/lib/Dom/addEventListener';
-import Button, { ButtonType } from '../button';
+import Button from '../button';
+import { ButtonType } from '../button/button';
 
 let mousePosition;
 let mousePositionEventBinded;

components/popconfirm/index.tsx

@@ -1,7 +1,8 @@
 import React from 'react';
 import Tooltip, { AbstractTooltipProps }  from '../tooltip';
 import Icon from '../icon';
-import Button, { ButtonType } from '../button';
+import Button from '../button';
+import { ButtonType } from '../button/button';
 import injectLocale from '../locale-provider/injectLocale';
 
 export interface PopconfirmProps extends AbstractTooltipProps {