diff --git a/components/affix/index.tsx b/components/affix/index.tsx
index 4254837fb..29e1bb06f 100644
--- a/components/affix/index.tsx
+++ b/components/affix/index.tsx
@@ -268,6 +268,7 @@ const Affix = defineComponent({
 /* istanbul ignore next */
 Affix.install = function(app: App) {
   app.component(Affix.name, Affix);
+  return app;
 };
 
 export default Affix;
diff --git a/components/alert/index.tsx b/components/alert/index.tsx
index ff075666d..0f9065e4b 100644
--- a/components/alert/index.tsx
+++ b/components/alert/index.tsx
@@ -162,6 +162,7 @@ const Alert = defineComponent({
 /* istanbul ignore next */
 Alert.install = function(app: App) {
   app.component(Alert.name, Alert);
+  return app;
 };
 
 export default Alert;
diff --git a/components/anchor/index.tsx b/components/anchor/index.tsx
index 1c54bb6c8..54d2aa82b 100644
--- a/components/anchor/index.tsx
+++ b/components/anchor/index.tsx
@@ -8,5 +8,6 @@ Anchor.Link = AnchorLink;
 Anchor.install = function(app: App) {
   app.component(Anchor.name, Anchor);
   app.component(Anchor.Link.name, Anchor.Link);
+  return app;
 };
 export default Anchor;
diff --git a/components/auto-complete/index.tsx b/components/auto-complete/index.tsx
index a91c89b0f..319186948 100644
--- a/components/auto-complete/index.tsx
+++ b/components/auto-complete/index.tsx
@@ -138,6 +138,7 @@ AutoComplete.install = function(app: App) {
   app.component(AutoComplete.name, AutoComplete);
   app.component(AutoComplete.Option.name, AutoComplete.Option);
   app.component(AutoComplete.OptGroup.name, AutoComplete.OptGroup);
+  return app;
 };
 
 export default AutoComplete;
diff --git a/components/avatar/index.ts b/components/avatar/index.ts
index 356239782..08469537f 100644
--- a/components/avatar/index.ts
+++ b/components/avatar/index.ts
@@ -4,6 +4,7 @@ import Avatar from './Avatar';
 /* istanbul ignore next */
 Avatar.install = function(app: App) {
   app.component(Avatar.name, Avatar);
+  return app;
 };
 
 export default Avatar;
diff --git a/components/back-top/index.tsx b/components/back-top/index.tsx
index b1b5e957c..163eb823c 100644
--- a/components/back-top/index.tsx
+++ b/components/back-top/index.tsx
@@ -103,6 +103,7 @@ const BackTop = defineComponent({
 /* istanbul ignore next */
 BackTop.install = function(app: App) {
   app.component(BackTop.name, BackTop);
+  return app;
 };
 
 export default BackTop;
diff --git a/components/badge/index.ts b/components/badge/index.ts
index 487616115..408142fad 100644
--- a/components/badge/index.ts
+++ b/components/badge/index.ts
@@ -4,6 +4,7 @@ import Badge from './Badge';
 /* istanbul ignore next */
 Badge.install = function(app: App) {
   app.component(Badge.name, Badge);
+  return app;
 };
 
 export default Badge;
diff --git a/components/breadcrumb/index.ts b/components/breadcrumb/index.ts
index 70feae09b..5cefc878e 100644
--- a/components/breadcrumb/index.ts
+++ b/components/breadcrumb/index.ts
@@ -11,6 +11,7 @@ Breadcrumb.install = function(app: App) {
   app.component(Breadcrumb.name, Breadcrumb);
   app.component(BreadcrumbItem.name, BreadcrumbItem);
   app.component(BreadcrumbSeparator.name, BreadcrumbSeparator);
+  return app;
 };
 
 export default Breadcrumb;
diff --git a/components/button/index.ts b/components/button/index.ts
index 8269c17fe..2f5fa390a 100644
--- a/components/button/index.ts
+++ b/components/button/index.ts
@@ -8,6 +8,7 @@ Button.Group = ButtonGroup;
 Button.install = function(app: App) {
   app.component(Button.name, Button);
   app.component(ButtonGroup.name, ButtonGroup);
+  return app;
 };
 
 export default Button;
diff --git a/components/calendar/index.tsx b/components/calendar/index.tsx
index 3b121d555..12a1906e7 100644
--- a/components/calendar/index.tsx
+++ b/components/calendar/index.tsx
@@ -255,6 +255,7 @@ const Calendar = defineComponent({
 /* istanbul ignore next */
 Calendar.install = function(app: App) {
   app.component(Calendar.name, Calendar);
+  return app;
 };
 export { HeaderProps } from './Header';
 export default Calendar;
diff --git a/components/card/index.ts b/components/card/index.ts
index 934463da7..126674bed 100644
--- a/components/card/index.ts
+++ b/components/card/index.ts
@@ -11,6 +11,7 @@ Card.install = function(app: App) {
   app.component(Card.name, Card);
   app.component(Meta.name, Meta);
   app.component(Grid.name, Grid);
+  return app;
 };
 
 export default Card;
diff --git a/components/carousel/index.jsx b/components/carousel/index.jsx
index b19a54333..40e987737 100644
--- a/components/carousel/index.jsx
+++ b/components/carousel/index.jsx
@@ -165,6 +165,7 @@ const Carousel = {
 /* istanbul ignore next */
 Carousel.install = function(app) {
   app.component(Carousel.name, Carousel);
+  return app;
 };
 
 export default Carousel;
diff --git a/components/cascader/index.jsx b/components/cascader/index.jsx
index 34a5ecef0..932b6aa59 100644
--- a/components/cascader/index.jsx
+++ b/components/cascader/index.jsx
@@ -555,6 +555,7 @@ const Cascader = {
 
 Cascader.install = function(app) {
   app.component(Cascader.name, Cascader);
+  return app;
 };
 
 export default Cascader;
diff --git a/components/checkbox/index.js b/components/checkbox/index.js
index 74b248d04..50747f7fe 100644
--- a/components/checkbox/index.js
+++ b/components/checkbox/index.js
@@ -7,6 +7,7 @@ Checkbox.Group = CheckboxGroup;
 Checkbox.install = function(app) {
   app.component(Checkbox.name, Checkbox);
   app.component(CheckboxGroup.name, CheckboxGroup);
+  return app;
 };
 
 export default Checkbox;
diff --git a/components/col/index.ts b/components/col/index.ts
index 9b6eb4f97..988984119 100644
--- a/components/col/index.ts
+++ b/components/col/index.ts
@@ -3,6 +3,7 @@ import { Col } from '../grid';
 /* istanbul ignore next */
 Col.install = function(app: App) {
   app.component(Col.name, Col);
+  return app;
 };
 
 export default Col;
diff --git a/components/collapse/index.js b/components/collapse/index.js
index 6f59c45d4..a02659270 100644
--- a/components/collapse/index.js
+++ b/components/collapse/index.js
@@ -7,6 +7,7 @@ Collapse.Panel = CollapsePanel;
 Collapse.install = function(app) {
   app.component(Collapse.name, Collapse);
   app.component(CollapsePanel.name, CollapsePanel);
+  return app;
 };
 
 export default Collapse;
diff --git a/components/color-picker/index.js b/components/color-picker/index.js
index 6638e9892..abd2eec9a 100644
--- a/components/color-picker/index.js
+++ b/components/color-picker/index.js
@@ -2,6 +2,7 @@ import ColorPicker from './ColorPicker';
 /* istanbul ignore next */
 ColorPicker.install = function(app) {
   app.component(ColorPicker.name, ColorPicker);
+  return app;
 };
 
 export default ColorPicker;
diff --git a/components/comment/index.tsx b/components/comment/index.tsx
index 9a34833af..9a4018130 100644
--- a/components/comment/index.tsx
+++ b/components/comment/index.tsx
@@ -88,6 +88,7 @@ Comment.displayName = 'AComment';
 /* istanbul ignore next */
 Comment.install = function(app: App) {
   app.component(Comment.name, Comment);
+  return app;
 };
 
 export default Comment;
diff --git a/components/config-provider/index.tsx b/components/config-provider/index.tsx
index 6e9c2c728..41616cb22 100644
--- a/components/config-provider/index.tsx
+++ b/components/config-provider/index.tsx
@@ -165,6 +165,7 @@ export const defaultConfigProvider: ConfigConsumerProps = {
 /* istanbul ignore next */
 ConfigProvider.install = function(app: App) {
   app.component(ConfigProvider.name, ConfigProvider);
+  return app;
 };
 
 export default ConfigProvider;
diff --git a/components/date-picker/index.js b/components/date-picker/index.js
index e96e68e33..14246d40a 100755
--- a/components/date-picker/index.js
+++ b/components/date-picker/index.js
@@ -30,6 +30,7 @@ DatePicker.install = function(app) {
   app.component(DatePicker.RangePicker.name, DatePicker.RangePicker);
   app.component(DatePicker.MonthPicker.name, DatePicker.MonthPicker);
   app.component(DatePicker.WeekPicker.name, DatePicker.WeekPicker);
+  return app;
 };
 
 export default DatePicker;
diff --git a/components/descriptions/index.jsx b/components/descriptions/index.jsx
index 81361afd9..9dd7ad04f 100644
--- a/components/descriptions/index.jsx
+++ b/components/descriptions/index.jsx
@@ -264,6 +264,7 @@ const Descriptions = {
 Descriptions.install = function(app) {
   app.component(Descriptions.name, Descriptions);
   app.component(Descriptions.Item.name, Descriptions.Item);
+  return app;
 };
 
 export default Descriptions;
diff --git a/components/divider/index.tsx b/components/divider/index.tsx
index 9ea2f4084..8b56e6ad2 100644
--- a/components/divider/index.tsx
+++ b/components/divider/index.tsx
@@ -47,6 +47,7 @@ const Divider = defineComponent({
 /* istanbul ignore next */
 Divider.install = function(app: App) {
   app.component(Divider.name, Divider);
+  return app;
 };
 
 export default Divider;
diff --git a/components/drawer/index.jsx b/components/drawer/index.jsx
index cbe9cdb27..b6c43b9f7 100644
--- a/components/drawer/index.jsx
+++ b/components/drawer/index.jsx
@@ -254,6 +254,7 @@ const Drawer = {
 /* istanbul ignore next */
 Drawer.install = function(app) {
   app.component(Drawer.name, Drawer);
+  return app;
 };
 
 export default Drawer;
diff --git a/components/dropdown/index.js b/components/dropdown/index.js
index 545fdbc66..3f11014ce 100644
--- a/components/dropdown/index.js
+++ b/components/dropdown/index.js
@@ -10,6 +10,7 @@ Dropdown.Button = DropdownButton;
 Dropdown.install = function(app) {
   app.component(Dropdown.name, Dropdown);
   app.component(DropdownButton.name, DropdownButton);
+  return app;
 };
 
 export default Dropdown;
diff --git a/components/empty/index.tsx b/components/empty/index.tsx
index 880123808..f008a4c97 100644
--- a/components/empty/index.tsx
+++ b/components/empty/index.tsx
@@ -94,6 +94,7 @@ Empty.props = {
 /* istanbul ignore next */
 Empty.install = function(app: App) {
   app.component(Empty.displayName, Empty);
+  return app;
 };
 
 export default Empty;
diff --git a/components/form/index.jsx b/components/form/index.jsx
index b63f33cf5..a232328d1 100644
--- a/components/form/index.jsx
+++ b/components/form/index.jsx
@@ -7,6 +7,7 @@ export { FormItemProps } from './FormItem';
 Form.install = function(app) {
   app.component(Form.name, Form);
   app.component(Form.Item.name, Form.Item);
+  return app;
 };
 
 export default Form;
diff --git a/components/icon/index.tsx b/components/icon/index.tsx
index 4f0884a2c..54362a435 100644
--- a/components/icon/index.tsx
+++ b/components/icon/index.tsx
@@ -11,6 +11,7 @@ Icon.displayName = 'AIcon';
 /* istanbul ignore next */
 Icon.install = function(app: App) {
   app.component(Icon.displayName, Icon);
+  return app;
 };
 
 export default Icon;
diff --git a/components/index.ts b/components/index.ts
index b719cc047..267b314bf 100644
--- a/components/index.ts
+++ b/components/index.ts
@@ -224,6 +224,7 @@ const install = function(app: App) {
   app.config.globalProperties.$warning = Modal.warning;
   app.config.globalProperties.$confirm = Modal.confirm;
   app.config.globalProperties.$destroyAll = Modal.destroyAll;
+  return app;
 };
 
 /* istanbul ignore if */
diff --git a/components/input-number/index.jsx b/components/input-number/index.jsx
index 50b40fa51..c92835894 100644
--- a/components/input-number/index.jsx
+++ b/components/input-number/index.jsx
@@ -91,6 +91,7 @@ const InputNumber = {
 /* istanbul ignore next */
 InputNumber.install = function(app) {
   app.component(InputNumber.name, InputNumber);
+  return app;
 };
 
 export default InputNumber;
diff --git a/components/input/index.js b/components/input/index.js
index e9be351d2..279624086 100644
--- a/components/input/index.js
+++ b/components/input/index.js
@@ -16,6 +16,7 @@ Input.install = function(app) {
   app.component(Input.Search.name, Input.Search);
   app.component(Input.TextArea.name, Input.TextArea);
   app.component(Input.Password.name, Input.Password);
+  return app;
 };
 
 export default Input;
diff --git a/components/layout/index.js b/components/layout/index.js
index ab20ee702..bdfbb3339 100644
--- a/components/layout/index.js
+++ b/components/layout/index.js
@@ -10,5 +10,6 @@ Layout.install = function(app) {
   app.component(Layout.Footer.name, Layout.Footer);
   app.component(Layout.Sider.name, Layout.Sider);
   app.component(Layout.Content.name, Layout.Content);
+  return app;
 };
 export default Layout;
diff --git a/components/list/index.jsx b/components/list/index.jsx
index 53919be29..c0ca8122c 100644
--- a/components/list/index.jsx
+++ b/components/list/index.jsx
@@ -283,6 +283,7 @@ List.install = function(app) {
   app.component(List.name, List);
   app.component(List.Item.name, List.Item);
   app.component(List.Item.Meta.displayName, List.Item.Meta);
+  return app;
 };
 
 export default List;
diff --git a/components/locale-provider/index.tsx b/components/locale-provider/index.tsx
index 0ea57d01a..09af84210 100644
--- a/components/locale-provider/index.tsx
+++ b/components/locale-provider/index.tsx
@@ -98,6 +98,7 @@ const LocaleProvider = defineComponent({
 /* istanbul ignore next */
 LocaleProvider.install = function(app: App) {
   app.component(LocaleProvider.name, LocaleProvider);
+  return app;
 };
 
 export default LocaleProvider;
diff --git a/components/mentions/index.jsx b/components/mentions/index.jsx
index 3c6efcb4f..c5af332fc 100644
--- a/components/mentions/index.jsx
+++ b/components/mentions/index.jsx
@@ -180,6 +180,7 @@ const Mentions = {
 Mentions.install = function(app) {
   app.component(Mentions.name, Mentions);
   app.component(Mentions.Option.name, Mentions.Option);
+  return app;
 };
 
 export default Mentions;
diff --git a/components/menu/index.jsx b/components/menu/index.jsx
index 647947fa7..16050fc27 100644
--- a/components/menu/index.jsx
+++ b/components/menu/index.jsx
@@ -303,5 +303,6 @@ Menu.install = function(app) {
   app.component(Menu.SubMenu.name, Menu.SubMenu);
   app.component(Menu.Divider.name, Menu.Divider);
   app.component(Menu.ItemGroup.name, Menu.ItemGroup);
+  return app;
 };
 export default Menu;
diff --git a/components/modal/index.jsx b/components/modal/index.jsx
index d5cb8e6f2..d113f63b5 100644
--- a/components/modal/index.jsx
+++ b/components/modal/index.jsx
@@ -76,6 +76,7 @@ Modal.destroyAll = function destroyAllFn() {
 /* istanbul ignore next */
 Modal.install = function(app) {
   app.component(Modal.name, Modal);
+  return app;
 };
 
 export default Modal;
diff --git a/components/page-header/index.jsx b/components/page-header/index.jsx
index 2817d8993..d0ecfb8bb 100644
--- a/components/page-header/index.jsx
+++ b/components/page-header/index.jsx
@@ -138,6 +138,7 @@ const PageHeader = {
 /* istanbul ignore next */
 PageHeader.install = function(app) {
   app.component(PageHeader.name, PageHeader);
+  return app;
 };
 
 export default PageHeader;
diff --git a/components/pagination/index.js b/components/pagination/index.js
index 2c0a580a1..e8338024d 100644
--- a/components/pagination/index.js
+++ b/components/pagination/index.js
@@ -5,6 +5,7 @@ export { PaginationProps, PaginationConfig } from './Pagination';
 /* istanbul ignore next */
 Pagination.install = function(app) {
   app.component(Pagination.name, Pagination);
+  return app;
 };
 
 export default Pagination;
diff --git a/components/popconfirm/index.jsx b/components/popconfirm/index.jsx
index 8c40c8d2d..e22f7b658 100644
--- a/components/popconfirm/index.jsx
+++ b/components/popconfirm/index.jsx
@@ -153,6 +153,7 @@ const Popconfirm = {
 /* istanbul ignore next */
 Popconfirm.install = function(app) {
   app.component(Popconfirm.name, Popconfirm);
+  return app;
 };
 
 export default Popconfirm;
diff --git a/components/popover/index.jsx b/components/popover/index.jsx
index ec39343b5..d066a40a5 100644
--- a/components/popover/index.jsx
+++ b/components/popover/index.jsx
@@ -54,6 +54,7 @@ const Popover = {
 /* istanbul ignore next */
 Popover.install = function(app) {
   app.component(Popover.name, Popover);
+  return app;
 };
 
 export default Popover;
diff --git a/components/progress/index.jsx b/components/progress/index.jsx
index 6ec7895ac..ac8b2be7e 100644
--- a/components/progress/index.jsx
+++ b/components/progress/index.jsx
@@ -5,6 +5,7 @@ export { ProgressProps } from './progress';
 /* istanbul ignore next */
 Progress.install = function(app) {
   app.component(Progress.name, Progress);
+  return app;
 };
 
 export default Progress;
diff --git a/components/radio/index.js b/components/radio/index.js
index f52f4b25e..566cb5afb 100644
--- a/components/radio/index.js
+++ b/components/radio/index.js
@@ -10,6 +10,7 @@ Radio.install = function(app) {
   app.component(Radio.name, Radio);
   app.component(Radio.Group.name, Radio.Group);
   app.component(Radio.Button.name, Radio.Button);
+  return app;
 };
 
 export { Button, Group };
diff --git a/components/rate/index.jsx b/components/rate/index.jsx
index 59fb4fef3..5fa78528f 100644
--- a/components/rate/index.jsx
+++ b/components/rate/index.jsx
@@ -62,5 +62,6 @@ const Rate = {
 /* istanbul ignore next */
 Rate.install = function(app) {
   app.component(Rate.name, Rate);
+  return app;
 };
 export default Rate;
diff --git a/components/result/index.jsx b/components/result/index.jsx
index 7dc924286..a0e5c91df 100644
--- a/components/result/index.jsx
+++ b/components/result/index.jsx
@@ -89,5 +89,6 @@ Result.PRESENTED_IMAGE_500 = ExceptionMap[500];
 /* istanbul ignore next */
 Result.install = function(app) {
   app.component(Result.name, Result);
+  return app;
 };
 export default Result;
diff --git a/components/row/index.js b/components/row/index.js
index 2d818e055..38182e72a 100644
--- a/components/row/index.js
+++ b/components/row/index.js
@@ -3,6 +3,7 @@ import { Row } from '../grid';
 /* istanbul ignore next */
 Row.install = function(app) {
   app.component(Row.name, Row);
+  return app;
 };
 
 export default Row;
diff --git a/components/select/index.tsx b/components/select/index.tsx
index 0085d6962..b7388283b 100644
--- a/components/select/index.tsx
+++ b/components/select/index.tsx
@@ -263,5 +263,6 @@ Select.install = function(app: App) {
   app.component(Select.name, Select);
   app.component(Select.Option.name, Select.Option);
   app.component(Select.OptGroup.name, Select.OptGroup);
+  return app;
 };
 export default Select;
diff --git a/components/skeleton/index.jsx b/components/skeleton/index.jsx
index d3540c133..56065b8ed 100644
--- a/components/skeleton/index.jsx
+++ b/components/skeleton/index.jsx
@@ -165,5 +165,6 @@ const Skeleton = {
 /* istanbul ignore next */
 Skeleton.install = function(app) {
   app.component(Skeleton.name, Skeleton);
+  return app;
 };
 export default Skeleton;
diff --git a/components/slider/index.jsx b/components/slider/index.jsx
index 09d0653cd..95f14155c 100644
--- a/components/slider/index.jsx
+++ b/components/slider/index.jsx
@@ -148,6 +148,7 @@ const Slider = {
 /* istanbul ignore next */
 Slider.install = function(app) {
   app.component(Slider.name, Slider);
+  return app;
 };
 
 export default Slider;
diff --git a/components/space/index.tsx b/components/space/index.tsx
index 988ac5639..8cd65fa33 100644
--- a/components/space/index.tsx
+++ b/components/space/index.tsx
@@ -69,6 +69,7 @@ Space.displayName = 'ASpace';
 /* istanbul ignore next */
 Space.install = function(app: App) {
   app.component(Space.displayName, Space);
+  return app;
 };
 
 export default Space;
diff --git a/components/spin/index.js b/components/spin/index.js
index 8b0658083..e07e60a0a 100644
--- a/components/spin/index.js
+++ b/components/spin/index.js
@@ -7,6 +7,7 @@ Spin.setDefaultIndicator = setDefaultIndicator;
 /* istanbul ignore next */
 Spin.install = function(app) {
   app.component(Spin.name, Spin);
+  return app;
 };
 
 export default Spin;
diff --git a/components/statistic/index.js b/components/statistic/index.js
index 7a7bb8aee..86e71d7a8 100644
--- a/components/statistic/index.js
+++ b/components/statistic/index.js
@@ -6,6 +6,7 @@ Statistic.Countdown = Countdown;
 Statistic.install = function(app) {
   app.component(Statistic.name, Statistic);
   app.component(Statistic.Countdown.name, Statistic.Countdown);
+  return app;
 };
 
 export default Statistic;
diff --git a/components/steps/index.jsx b/components/steps/index.jsx
index fa64e6b36..ff23b30d1 100644
--- a/components/steps/index.jsx
+++ b/components/steps/index.jsx
@@ -71,6 +71,7 @@ const Steps = {
 Steps.install = function(app) {
   app.component(Steps.name, Steps);
   app.component(Steps.Step.name, Steps.Step);
+  return app;
 };
 
 export default Steps;
diff --git a/components/switch/index.jsx b/components/switch/index.jsx
index c575e67fa..2037b4e68 100644
--- a/components/switch/index.jsx
+++ b/components/switch/index.jsx
@@ -81,6 +81,7 @@ const Switch = {
 /* istanbul ignore next */
 Switch.install = function(app) {
   app.component(Switch.name, Switch);
+  return app;
 };
 
 export default Switch;
diff --git a/components/table/index.jsx b/components/table/index.jsx
index 2468b7049..b5deebe0a 100644
--- a/components/table/index.jsx
+++ b/components/table/index.jsx
@@ -85,6 +85,7 @@ Table.install = function(app) {
   app.component(Table.name, Table);
   app.component(Table.Column.name, Table.Column);
   app.component(Table.ColumnGroup.name, Table.ColumnGroup);
+  return app;
 };
 
 export default Table;
diff --git a/components/tabs/index.ts b/components/tabs/index.ts
index 393bac6de..150589631 100644
--- a/components/tabs/index.ts
+++ b/components/tabs/index.ts
@@ -11,6 +11,7 @@ Tabs.install = function(app: App) {
   app.component(Tabs.name, Tabs);
   app.component(Tabs.TabPane.name, Tabs.TabPane);
   app.component(Tabs.TabContent.name, Tabs.TabContent);
+  return app;
 };
 
 export default Tabs;
diff --git a/components/tag/index.tsx b/components/tag/index.tsx
index fec69143c..a1c483d72 100644
--- a/components/tag/index.tsx
+++ b/components/tag/index.tsx
@@ -136,6 +136,7 @@ Tag.CheckableTag = CheckableTag;
 Tag.install = (app: App) => {
   app.component(Tag.name, Tag);
   app.component(CheckableTag.name, CheckableTag);
+  return app;
 };
 
 export default Tag;
diff --git a/components/time-picker/index.jsx b/components/time-picker/index.jsx
index c95859707..2b1487a24 100644
--- a/components/time-picker/index.jsx
+++ b/components/time-picker/index.jsx
@@ -267,6 +267,7 @@ const TimePicker = {
 /* istanbul ignore next */
 TimePicker.install = function(app) {
   app.component(TimePicker.name, TimePicker);
+  return app;
 };
 
 export default TimePicker;
diff --git a/components/timeline/index.jsx b/components/timeline/index.jsx
index 15bbb8b06..2afa84cfe 100644
--- a/components/timeline/index.jsx
+++ b/components/timeline/index.jsx
@@ -10,6 +10,7 @@ Timeline.Item = TimelineItem;
 Timeline.install = function(app) {
   app.component(Timeline.name, Timeline);
   app.component(TimelineItem.name, TimelineItem);
+  return app;
 };
 
 export default Timeline;
diff --git a/components/tooltip/index.js b/components/tooltip/index.js
index dba02a5a9..c1909f7ec 100644
--- a/components/tooltip/index.js
+++ b/components/tooltip/index.js
@@ -3,6 +3,7 @@ import ToolTip from './Tooltip';
 /* istanbul ignore next */
 ToolTip.install = function(app) {
   app.component(ToolTip.name, ToolTip);
+  return app;
 };
 
 export default ToolTip;
diff --git a/components/transfer/index.jsx b/components/transfer/index.jsx
index 486929521..1b0ad457d 100644
--- a/components/transfer/index.jsx
+++ b/components/transfer/index.jsx
@@ -483,6 +483,7 @@ const Transfer = {
 /* istanbul ignore next */
 Transfer.install = function(app) {
   app.component(Transfer.name, Transfer);
+  return app;
 };
 
 export default Transfer;
diff --git a/components/tree-select/index.jsx b/components/tree-select/index.jsx
index 5a56b091b..db6f2becd 100644
--- a/components/tree-select/index.jsx
+++ b/components/tree-select/index.jsx
@@ -202,6 +202,7 @@ const TreeSelect = {
 TreeSelect.install = function(app) {
   app.component(TreeSelect.name, TreeSelect);
   app.component('ATreeSelectNode', TreeSelect.TreeNode);
+  return app;
 };
 
 export default TreeSelect;
diff --git a/components/tree/index.jsx b/components/tree/index.jsx
index a3c9274df..0a1dc28ca 100644
--- a/components/tree/index.jsx
+++ b/components/tree/index.jsx
@@ -8,6 +8,7 @@ Tree.install = function(app) {
   app.component(Tree.name, Tree);
   app.component(Tree.TreeNode.name, Tree.TreeNode);
   app.component(DirectoryTree.name, DirectoryTree);
+  return app;
 };
 
 export default Tree;
diff --git a/components/upload/index.jsx b/components/upload/index.jsx
index 41159d994..e35d38ad1 100644
--- a/components/upload/index.jsx
+++ b/components/upload/index.jsx
@@ -9,6 +9,7 @@ Upload.Dragger = Dragger;
 Upload.install = function(app) {
   app.component(Upload.name, Upload);
   app.component(Dragger.name, Dragger);
+  return app;
 };
 
 export default Upload;