diff --git a/.eslintrc.js b/.eslintrc.js
index 817a77fb8a..1028b67970 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -1,7 +1,3 @@
-const commonGlobals = {
-  gtag: true,
-};
-
 module.exports = {
   extends: [
     'airbnb',
@@ -38,7 +34,6 @@ module.exports = {
     {
       files: ['*.md'],
       globals: {
-        ...commonGlobals,
         React: true,
         ReactDOM: true,
         mountNode: true,
@@ -124,5 +119,7 @@ module.exports = {
     'unicorn/expiring-todo-comments': 2,
     'unicorn/no-abusive-eslint-disable': 2,
   },
-  globals: commonGlobals,
+  globals: {
+    gtag: true,
+  },
 };
diff --git a/components/affix/__tests__/Affix.test.tsx b/components/affix/__tests__/Affix.test.tsx
index 7545258569..d86ce2739e 100644
--- a/components/affix/__tests__/Affix.test.tsx
+++ b/components/affix/__tests__/Affix.test.tsx
@@ -1,12 +1,13 @@
 import React from 'react';
-import { mount } from 'enzyme';
-import Affix from '..';
+import { mount, ReactWrapper, HTMLAttributes } from 'enzyme';
+import ResizeObserverImpl from 'rc-resize-observer';
+import Affix, { AffixProps, AffixState } from '..';
 import { getObserverEntities } from '../utils';
 import Button from '../../button';
 import rtlTest from '../../../tests/shared/rtlTest';
 import { sleep } from '../../../tests/utils';
 
-const events: any = {};
+const events: Partial<Record<keyof HTMLElementEventMap, (ev: Partial<Event>) => void>> = {};
 
 class AffixMounter extends React.Component<{
   offsetBottom?: number;
@@ -15,12 +16,14 @@ class AffixMounter extends React.Component<{
 }> {
   private container: HTMLDivElement;
 
-  private affix: Affix;
+  public affix: Affix;
 
   componentDidMount() {
-    this.container.addEventListener = jest.fn().mockImplementation((event, cb) => {
-      events[event] = cb;
-    });
+    this.container.addEventListener = jest
+      .fn()
+      .mockImplementation((event: keyof HTMLElementEventMap, cb: (ev: Partial<Event>) => void) => {
+        events[event] = cb;
+      });
   }
 
   getTarget = () => this.container;
@@ -29,7 +32,7 @@ class AffixMounter extends React.Component<{
     return (
       <div
         ref={node => {
-          this.container = node;
+          this.container = node!;
         }}
         className="container"
       >
@@ -37,7 +40,7 @@ class AffixMounter extends React.Component<{
           className="fixed"
           target={this.getTarget}
           ref={ele => {
-            this.affix = ele;
+            this.affix = ele!;
           }}
           {...this.props}
         >
@@ -51,14 +54,15 @@ class AffixMounter extends React.Component<{
 describe('Affix Render', () => {
   rtlTest(Affix);
 
-  let wrapper;
   const domMock = jest.spyOn(HTMLElement.prototype, 'getBoundingClientRect');
+  let affixMounterWrapper: ReactWrapper<unknown, unknown, AffixMounter>;
+  let affixWrapper: ReactWrapper<AffixProps, AffixState, Affix>;
 
-  const classRect: any = {
+  const classRect: Record<string, DOMRect> = {
     container: {
       top: 0,
       bottom: 100,
-    },
+    } as DOMRect,
   };
 
   beforeAll(() => {
@@ -76,11 +80,14 @@ describe('Affix Render', () => {
     domMock.mockRestore();
   });
 
-  const movePlaceholder = async top => {
+  const movePlaceholder = async (top: number) => {
     classRect.fixed = {
       top,
       bottom: top,
-    };
+    } as DOMRect;
+    if (events.scroll == null) {
+      throw new Error('scroll should be set');
+    }
     events.scroll({
       type: 'scroll',
     });
@@ -90,53 +97,53 @@ describe('Affix Render', () => {
   it('Anchor render perfectly', async () => {
     document.body.innerHTML = '<div id="mounter" />';
 
-    wrapper = mount(<AffixMounter />, { attachTo: document.getElementById('mounter') });
+    affixMounterWrapper = mount(<AffixMounter />, { attachTo: document.getElementById('mounter') });
     await sleep(20);
 
     await movePlaceholder(0);
-    expect(wrapper.instance().affix.state.affixStyle).toBeFalsy();
+    expect(affixMounterWrapper.instance().affix.state.affixStyle).toBeFalsy();
 
     await movePlaceholder(-100);
-    expect(wrapper.instance().affix.state.affixStyle).toBeTruthy();
+    expect(affixMounterWrapper.instance().affix.state.affixStyle).toBeTruthy();
 
     await movePlaceholder(0);
-    expect(wrapper.instance().affix.state.affixStyle).toBeFalsy();
+    expect(affixMounterWrapper.instance().affix.state.affixStyle).toBeFalsy();
   });
 
   it('support offsetBottom', async () => {
     document.body.innerHTML = '<div id="mounter" />';
 
-    wrapper = mount(<AffixMounter offsetBottom={0} />, {
+    affixMounterWrapper = mount(<AffixMounter offsetBottom={0} />, {
       attachTo: document.getElementById('mounter'),
     });
 
     await sleep(20);
 
     await movePlaceholder(300);
-    expect(wrapper.instance().affix.state.affixStyle).toBeTruthy();
+    expect(affixMounterWrapper.instance().affix.state.affixStyle).toBeTruthy();
 
     await movePlaceholder(0);
-    expect(wrapper.instance().affix.state.affixStyle).toBeFalsy();
+    expect(affixMounterWrapper.instance().affix.state.affixStyle).toBeFalsy();
 
     await movePlaceholder(300);
-    expect(wrapper.instance().affix.state.affixStyle).toBeTruthy();
+    expect(affixMounterWrapper.instance().affix.state.affixStyle).toBeTruthy();
   });
 
   it('updatePosition when offsetTop changed', async () => {
     document.body.innerHTML = '<div id="mounter" />';
 
-    wrapper = mount(<AffixMounter offsetTop={0} />, {
+    affixMounterWrapper = mount(<AffixMounter offsetTop={0} />, {
       attachTo: document.getElementById('mounter'),
     });
     await sleep(20);
 
     await movePlaceholder(-100);
-    expect(wrapper.instance().affix.state.affixStyle.top).toBe(0);
-    wrapper.setProps({
+    expect(affixMounterWrapper.instance().affix.state.affixStyle?.top).toBe(0);
+    affixMounterWrapper.setProps({
       offsetTop: 10,
     });
     await sleep(20);
-    expect(wrapper.instance().affix.state.affixStyle.top).toBe(10);
+    expect(affixMounterWrapper.instance().affix.state.affixStyle?.top).toBe(10);
   });
 
   describe('updatePosition when target changed', () => {
@@ -144,11 +151,11 @@ describe('Affix Render', () => {
       document.body.innerHTML = '<div id="mounter" />';
       const container = document.querySelector('#id') as HTMLDivElement;
       const getTarget = () => container;
-      wrapper = mount(<Affix target={getTarget}>{null}</Affix>);
-      wrapper.setProps({ target: null });
-      expect(wrapper.instance().state.status).toBe(0);
-      expect(wrapper.instance().state.affixStyle).toBe(undefined);
-      expect(wrapper.instance().state.placeholderStyle).toBe(undefined);
+      affixWrapper = mount(<Affix target={getTarget}>{null}</Affix>);
+      affixWrapper.setProps({ target: () => null });
+      expect(affixWrapper.instance().state.status).toBe(0);
+      expect(affixWrapper.instance().state.affixStyle).toBe(undefined);
+      expect(affixWrapper.instance().state.placeholderStyle).toBe(undefined);
     });
 
     it('instance change', async () => {
@@ -156,53 +163,68 @@ describe('Affix Render', () => {
 
       const container = document.createElement('div');
       document.body.appendChild(container);
-      let target = container;
+      let target: HTMLDivElement | null = container;
 
       const originLength = getObserverLength();
       const getTarget = () => target;
-      wrapper = mount(<Affix target={getTarget}>{null}</Affix>);
+      affixWrapper = mount(<Affix target={getTarget}>{null}</Affix>);
       await sleep(50);
 
       expect(getObserverLength()).toBe(originLength + 1);
       target = null;
-      wrapper.setProps({});
-      wrapper.update();
+      affixWrapper.setProps({});
+      affixWrapper.update();
       await sleep(50);
       expect(getObserverLength()).toBe(originLength);
     });
   });
 
   describe('updatePosition when size changed', () => {
-    function test(name, index) {
-      it(name, async () => {
-        document.body.innerHTML = '<div id="mounter" />';
+    it.each([
+      { name: 'inner', index: 0 },
+      { name: 'outer', index: 1 },
+    ])(name, async ({ index }) => {
+      document.body.innerHTML = '<div id="mounter" />';
 
-        const updateCalled = jest.fn();
-        wrapper = mount(<AffixMounter offsetBottom={0} onTestUpdatePosition={updateCalled} />, {
+      const updateCalled = jest.fn();
+      affixMounterWrapper = mount(
+        <AffixMounter offsetBottom={0} onTestUpdatePosition={updateCalled} />,
+        {
           attachTo: document.getElementById('mounter'),
-        });
-
-        await sleep(20);
-
-        await movePlaceholder(300);
-        expect(wrapper.instance().affix.state.affixStyle).toBeTruthy();
-        await sleep(20);
-        wrapper.update();
-
-        // Mock trigger resize
-        updateCalled.mockReset();
-        wrapper
-          .find('ResizeObserver')
-          .at(index)
-          .instance()
-          .onResize([{ target: { getBoundingClientRect: () => ({ width: 99, height: 99 }) } }]);
-        await sleep(20);
-
-        expect(updateCalled).toHaveBeenCalled();
-      });
-    }
+        },
+      );
 
-    test('inner', 0);
-    test('outer', 1);
+      await sleep(20);
+
+      await movePlaceholder(300);
+      expect(affixMounterWrapper.instance().affix.state.affixStyle).toBeTruthy();
+      await sleep(20);
+      affixMounterWrapper.update();
+
+      // Mock trigger resize
+      updateCalled.mockReset();
+      const resizeObserverInstance: ReactWrapper<
+        HTMLAttributes,
+        unknown,
+        ResizeObserverImpl
+      > = affixMounterWrapper.find('ResizeObserver') as any;
+      resizeObserverInstance
+        .at(index)
+        .instance()
+        .onResize(
+          [
+            {
+              target: {
+                getBoundingClientRect: () => ({ width: 99, height: 99 }),
+              } as Element,
+              contentRect: {} as DOMRect,
+            },
+          ],
+          ({} as unknown) as ResizeObserver,
+        );
+      await sleep(20);
+
+      expect(updateCalled).toHaveBeenCalled();
+    });
   });
 });
diff --git a/tsconfig.json b/tsconfig.json
index e0015c0709..cf511ab415 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -17,5 +17,5 @@
     "lib": ["dom", "es2017"],
     "skipLibCheck": true
   },
-  "exclude": ["node_modules", "lib", "es", "**/__tests__/**"]
+  "exclude": ["node_modules", "lib", "es"]
 }