diff --git a/components/select/index.tsx b/components/select/index.tsx
index e43462c6e..ac3662ed6 100644
--- a/components/select/index.tsx
+++ b/components/select/index.tsx
@@ -39,7 +39,17 @@ export interface SelectPropsTypes<VT>
 }
 export type SelectTypes = SelectPropsTypes<SelectValue>;
 export const SelectProps = () => ({
-  ...omit(BaseProps(), ['inputIcon', 'mode', 'getInputElement', 'backfill', 'class', 'style']),
+  ...(omit(BaseProps(), [
+    'inputIcon',
+    'mode',
+    'getInputElement',
+    'backfill',
+    'class',
+    'style',
+  ]) as Omit<
+    ReturnType<typeof BaseProps>,
+    'inputIcon' | 'mode' | 'getInputElement' | 'backfill' | 'class' | 'style'
+  >),
   value: {
     type: [Array, Object, String, Number] as PropType<SelectValue>,
   },
diff --git a/components/tree-select/index.jsx b/components/tree-select/index.tsx
similarity index 93%
rename from components/tree-select/index.jsx
rename to components/tree-select/index.tsx
index d14c03010..d23b184d0 100644
--- a/components/tree-select/index.jsx
+++ b/components/tree-select/index.tsx
@@ -1,9 +1,10 @@
 import VcTreeSelect, { TreeNode, SHOW_ALL, SHOW_PARENT, SHOW_CHILD } from '../vc-tree-select';
-import { inject } from 'vue';
+import { App, defineComponent, inject } from 'vue';
 import classNames from '../_util/classNames';
 import { TreeSelectProps } from './interface';
 import warning from '../_util/warning';
-import { initDefaultProps, getOptionProps, getComponent, getSlot } from '../_util/props-util';
+import { getOptionProps, getComponent, getSlot } from '../_util/props-util';
+import initDefaultProps from '../_util/props-util/initDefaultProps';
 import { defaultConfigProvider } from '../config-provider';
 
 export { TreeData, TreeSelectProps } from './interface';
@@ -14,7 +15,7 @@ import CloseOutlined from '@ant-design/icons-vue/CloseOutlined';
 import CloseCircleOutlined from '@ant-design/icons-vue/CloseCircleOutlined';
 import omit from 'omit.js';
 
-const TreeSelect = {
+const TreeSelect = defineComponent({
   TreeNode,
   SHOW_ALL,
   SHOW_PARENT,
@@ -28,6 +29,7 @@ const TreeSelect = {
   }),
   setup() {
     return {
+      vcTreeSelect: null,
       configProvider: inject('configProvider', defaultConfigProvider),
     };
   },
@@ -111,7 +113,7 @@ const TreeSelect = {
   },
 
   render() {
-    const props = getOptionProps(this);
+    const props: any = getOptionProps(this);
     const {
       prefixCls: customizePrefixCls,
       size,
@@ -121,10 +123,9 @@ const TreeSelect = {
       ...restProps
     } = props;
     const { class: className } = this.$attrs;
-    const getPrefixCls = this.configProvider.getPrefixCls;
+    const { renderEmpty, getPrefixCls } = this.configProvider;
     const prefixCls = getPrefixCls('select', customizePrefixCls);
 
-    const renderEmpty = this.configProvider.renderEmpty;
     const notFoundContent = getComponent(this, 'notFoundContent');
     const removeIcon = getComponent(this, 'removeIcon');
     const clearIcon = getComponent(this, 'clearIcon');
@@ -145,7 +146,7 @@ const TreeSelect = {
     const cls = {
       [`${prefixCls}-lg`]: size === 'large',
       [`${prefixCls}-sm`]: size === 'small',
-      [className]: className,
+      [className as string]: className,
     };
 
     // showSearch: single - false, multiple - true
@@ -196,10 +197,10 @@ const TreeSelect = {
       />
     );
   },
-};
+});
 
 /* istanbul ignore next */
-TreeSelect.install = function(app) {
+TreeSelect.install = function(app: App) {
   app.component(TreeSelect.name, TreeSelect);
   app.component('ATreeSelectNode', TreeSelect.TreeNode);
   return app;
diff --git a/components/tree-select/interface.jsx b/components/tree-select/interface.jsx
index fbf2aa1eb..bcde54e8e 100644
--- a/components/tree-select/interface.jsx
+++ b/components/tree-select/interface.jsx
@@ -1,5 +1,6 @@
 import PropTypes, { withUndefined } from '../_util/vue-types';
 import { SelectProps } from '../select';
+import { tuple } from '../_util/type';
 
 export const TreeData = PropTypes.shape({
   key: PropTypes.string,
@@ -35,7 +36,7 @@ export const TreeSelectProps = () => ({
   notFoundContent: PropTypes.any,
   searchPlaceholder: PropTypes.string,
   searchValue: PropTypes.string,
-  showCheckedStrategy: PropTypes.oneOf(['SHOW_ALL', 'SHOW_PARENT', 'SHOW_CHILD']),
+  showCheckedStrategy: PropTypes.oneOf(tuple('SHOW_ALL', 'SHOW_PARENT', 'SHOW_CHILD')),
   suffixIcon: PropTypes.any,
   treeCheckable: PropTypes.looseBool,
   treeCheckStrictly: PropTypes.looseBool,
diff --git a/components/tree-select/style/index.js b/components/tree-select/style/index.ts
similarity index 100%
rename from components/tree-select/style/index.js
rename to components/tree-select/style/index.ts