diff --git a/components/alert/index.tsx b/components/alert/index.tsx
index 82ca38392b..2d9994aaf9 100755
--- a/components/alert/index.tsx
+++ b/components/alert/index.tsx
@@ -4,7 +4,7 @@ import Animate from 'rc-animate';
 import Icon from '../icon';
 import classNames from 'classnames';
 
-function noop() {}
+function noop() { }
 
 export interface AlertProps {
   /**
@@ -20,7 +20,7 @@ export interface AlertProps {
   /** Additional content of Alert */
   description?: React.ReactNode;
   /** Callback when close Alert */
-  onClose?: React.MouseEventHandler<any>;
+  onClose?: React.MouseEventHandler<HTMLAnchorElement>;
   /** Whether to show icon */
   showIcon?: boolean;
   style?: React.CSSProperties;
@@ -30,14 +30,14 @@ export interface AlertProps {
 }
 
 export default class Alert extends React.Component<AlertProps, any> {
-  constructor(props) {
+  constructor(props: AlertProps) {
     super(props);
     this.state = {
       closing: true,
       closed: false,
     };
   }
-  handleClose = (e) => {
+  handleClose = (e: React.MouseEvent<HTMLAnchorElement>) => {
     e.preventDefault();
     let dom = ReactDOM.findDOMNode(this) as HTMLElement;
     dom.style.height = `${dom.offsetHeight}px`;
diff --git a/components/anchor/AnchorLink.tsx b/components/anchor/AnchorLink.tsx
index 1a7e9d2f76..c12855193e 100644
--- a/components/anchor/AnchorLink.tsx
+++ b/components/anchor/AnchorLink.tsx
@@ -31,7 +31,7 @@ export default class AnchorLink extends React.Component<AnchorLinkProps, any> {
     anchorHelper: AnchorHelper;
   };
 
-  private _component: Element;
+  private _component: HTMLAnchorElement;
 
   setActiveAnchor() {
     const { bounds, offsetTop, href, affix } = this.props;
@@ -50,25 +50,28 @@ export default class AnchorLink extends React.Component<AnchorLinkProps, any> {
     this.setActiveAnchor();
   }
 
-  renderAnchorLink = (child) => {
-    const { href } = child.props;
-    if (href) {
-      this.context.anchorHelper.addLink(href);
-      return React.cloneElement(child, {
-        onClick: this.props.onClick,
-        prefixCls: this.props.prefixCls,
-        affix: this.props.affix,
-        offsetTop: this.props.offsetTop,
-      });
+  renderAnchorLink = (child: React.ReactChild) => {
+    // Here child is a ReactChild type
+    if (typeof child !== 'string' && typeof child !== 'number') {
+      const { href } = child.props;
+      if (href) {
+        this.context.anchorHelper.addLink(href);
+        return React.cloneElement(child, {
+          onClick: this.props.onClick,
+          prefixCls: this.props.prefixCls,
+          affix: this.props.affix,
+          offsetTop: this.props.offsetTop,
+        });
+      }
     }
     return child;
   }
 
-  refsTo = (component) => {
+  refsTo = (component: HTMLAnchorElement) => {
     this._component = component;
   }
 
-  scrollTo = (e) => {
+  scrollTo = (e: React.MouseEvent<HTMLAnchorElement>) => {
     e.preventDefault();
     const { onClick, href } = this.props;
     const { anchorHelper } = this.context;
diff --git a/components/anchor/anchorHelper.tsx b/components/anchor/anchorHelper.tsx
index f5761aeb51..8dedba691c 100644
--- a/components/anchor/anchorHelper.tsx
+++ b/components/anchor/anchorHelper.tsx
@@ -3,7 +3,7 @@ import getRequestAnimationFrame from '../_util/getRequestAnimationFrame';
 
 export const reqAnimFrame = getRequestAnimationFrame();
 
-export const easeInOutCubic = (t, b, c, d) => {
+export const easeInOutCubic = (t: number, b: number, c: number, d: number) => {
   const cc = c - b;
   t /= d / 2;
   if (t < 1) {
@@ -17,7 +17,7 @@ export function getDefaultTarget() {
     window : null;
 }
 
-export function getOffsetTop(element): number {
+export function getOffsetTop(element: HTMLElement): number {
   if (!element) {
     return 0;
   }
@@ -28,10 +28,10 @@ export function getOffsetTop(element): number {
 
   const rect = element.getBoundingClientRect();
 
-  if ( rect.width || rect.height ) {
+  if (rect.width || rect.height) {
     const doc = element.ownerDocument;
     const docElem = doc.documentElement;
-    return  rect.top - docElem.clientTop;
+    return rect.top - docElem.clientTop;
   }
 
   return rect.top;
@@ -43,7 +43,7 @@ export type Section = {
   section: any;
 };
 
-export function scrollTo(href, offsetTop = 0, target = getDefaultTarget, callback = () => {}) {
+export function scrollTo(href: string, offsetTop = 0, target = getDefaultTarget, callback = () => { }) {
   const scrollTop = getScroll(target(), true);
   const targetElement = document.getElementById(href.substring(1));
   if (!targetElement) {
@@ -68,7 +68,7 @@ export function scrollTo(href, offsetTop = 0, target = getDefaultTarget, callbac
 
 class AnchorHelper {
   private links: Array<string>;
-  private currentAnchor: HTMLElement | null;
+  private currentAnchor: HTMLAnchorElement | null;
   private _activeAnchor: string;
 
   constructor() {
@@ -77,17 +77,17 @@ class AnchorHelper {
     this._activeAnchor = '';
   }
 
-  addLink(link) {
+  addLink(link: string) {
     if (this.links.indexOf(link) === -1) {
       this.links.push(link);
     }
   }
 
-  getCurrentActiveAnchor(): HTMLElement | null {
+  getCurrentActiveAnchor(): HTMLAnchorElement | null {
     return this.currentAnchor;
   }
 
-  setActiveAnchor(component) {
+  setActiveAnchor(component: HTMLAnchorElement) {
     this.currentAnchor = component;
   }
 
@@ -98,21 +98,21 @@ class AnchorHelper {
     }
 
     const linksPositions = (this.links
-    .map(section => {
-      const target = document.getElementById(section.substring(1));
-      if (target && getOffsetTop(target) < offsetTop + bounds) {
-        const top = getOffsetTop(target);
-        if (top <= offsetTop + bounds) {
-          return {
-            section,
-            top,
-            bottom: top + target.clientHeight,
-          };
+      .map(section => {
+        const target = document.getElementById(section.substring(1));
+        if (target && getOffsetTop(target) < offsetTop + bounds) {
+          const top = getOffsetTop(target);
+          if (top <= offsetTop + bounds) {
+            return {
+              section,
+              top,
+              bottom: top + target.clientHeight,
+            };
+          }
         }
-      }
-      return null;
-    })
-    .filter(section => section !== null) as Array<Section>);
+        return null;
+      })
+      .filter(section => section !== null) as Array<Section>);
 
     if (linksPositions.length) {
       const maxSection = linksPositions.reduce((prev, curr) => curr.top > prev.top ? curr : prev);
@@ -121,7 +121,7 @@ class AnchorHelper {
     return '';
   }
 
-  scrollTo(href, offsetTop, target = getDefaultTarget, callback = () => {}) {
+  scrollTo(href: string, offsetTop: number | undefined, target = getDefaultTarget, callback = () => { }) {
     scrollTo(href, offsetTop, target, callback);
   }
 }
diff --git a/components/anchor/index.tsx b/components/anchor/index.tsx
index 4b9150eece..5a2d39713b 100644
--- a/components/anchor/index.tsx
+++ b/components/anchor/index.tsx
@@ -39,7 +39,7 @@ export default class Anchor extends React.Component<AnchorProps, any> {
   private anchorHelper: AnchorHelper;
   private _avoidInk: boolean;
 
-  constructor(props) {
+  constructor(props: AnchorProps) {
     super(props);
     this.state = {
       activeAnchor: null,
@@ -85,7 +85,7 @@ export default class Anchor extends React.Component<AnchorProps, any> {
     }
   }
 
-  clickAnchorLink = (href, component) => {
+  clickAnchorLink = (href: string, component: HTMLElement) => {
     this._avoidInk = true;
     this.refs.ink.style.top = `${component.offsetTop + component.clientHeight / 2 - 4.5}px`;
     this.anchorHelper.scrollTo(href, this.props.offsetTop, getDefaultTarget, () => {
@@ -93,10 +93,10 @@ export default class Anchor extends React.Component<AnchorProps, any> {
     });
   }
 
-  renderAnchorLink = (child) => {
-
+  renderAnchorLink = (child: React.ReactElement<any>) => {
     const { href } = child.props;
-    if (child.type.__ANT_ANCHOR_LINK && href) {
+    const { type } = child as any;
+    if (type.__ANT_ANCHOR_LINK && href) {
       this.anchorHelper.addLink(href);
       return React.cloneElement(child, {
         onClick: this.clickAnchorLink,