diff --git a/components/affix/index.tsx b/components/affix/index.tsx
index 4093080455..1bd409d4f9 100644
--- a/components/affix/index.tsx
+++ b/components/affix/index.tsx
@@ -60,7 +60,8 @@ export default class Affix extends React.Component<AffixProps, any> {
   scrollEvent: any;
   resizeEvent: any;
   refs: {
-    fixedNode: any;
+    [key: string]: any;
+    fixedNode: HTMLElement;
   };
 
   constructor(props) {
diff --git a/custom-typings.d.ts b/custom-typings.d.ts
new file mode 100644
index 0000000000..b6be73e9af
--- /dev/null
+++ b/custom-typings.d.ts
@@ -0,0 +1,35 @@
+declare module 'classnames' {
+  export default function({}): string;
+}
+
+declare module 'gregorian-calendar' {
+  export default function({}): string;
+}
+
+declare module "object-assign" {
+  export default function(target: any, ...sources: any[]): any;
+}
+
+declare module "object.omit" {
+  export default function(target: any, ...sources: any[]): any;
+}
+
+declare module 'rc-animate' {
+  export default function(): any;
+}
+
+declare module 'rc-util/lib/Dom/addEventListener' {
+  export default function(domNode: any, event: string, handler: Function): any;
+}
+
+declare module 'shallowequal' {
+  export default function(source: any, target: any): boolean;
+}
+
+declare module 'warning' {
+  export default function(condition: boolean, message: string): void;
+}
+
+declare module 'css-animation' {
+  export default function(...any): any;
+}
diff --git a/custom-typings/classnames.d.ts b/custom-typings/classnames.d.ts
deleted file mode 100644
index beb6a1e884..0000000000
--- a/custom-typings/classnames.d.ts
+++ /dev/null
@@ -1,3 +0,0 @@
-declare module 'classnames' {
-  export default function({}): string;
-}
diff --git a/custom-typings/object-assign.d.ts b/custom-typings/object-assign.d.ts
deleted file mode 100644
index 78bf2ee639..0000000000
--- a/custom-typings/object-assign.d.ts
+++ /dev/null
@@ -1,3 +0,0 @@
-declare module "object-assign" {
-  export default function(target: any, ...sources: any[]): any;
-}
diff --git a/custom-typings/object.omit.d.ts b/custom-typings/object.omit.d.ts
deleted file mode 100644
index 5869d4d347..0000000000
--- a/custom-typings/object.omit.d.ts
+++ /dev/null
@@ -1,3 +0,0 @@
-declare module "object.omit" {
-  export default function(target: any, ...sources: any[]): any;
-}
diff --git a/custom-typings/rc-animate.d.ts b/custom-typings/rc-animate.d.ts
deleted file mode 100644
index 93fee3a33b..0000000000
--- a/custom-typings/rc-animate.d.ts
+++ /dev/null
@@ -1,3 +0,0 @@
-declare module 'rc-animate' {
-  export default function(): any;
-}
diff --git a/custom-typings/rc-util.d.ts b/custom-typings/rc-util.d.ts
deleted file mode 100644
index 99ec189342..0000000000
--- a/custom-typings/rc-util.d.ts
+++ /dev/null
@@ -1,3 +0,0 @@
-declare module 'rc-util/lib/Dom/addEventListener' {
-  export default function(domNode: any, event: string, handler: Function): any;
-}
diff --git a/custom-typings/shallowequal.d.ts b/custom-typings/shallowequal.d.ts
deleted file mode 100644
index caecb5b31f..0000000000
--- a/custom-typings/shallowequal.d.ts
+++ /dev/null
@@ -1,3 +0,0 @@
-declare module 'shallowequal' {
-  export default function(source: any, target: any): boolean;
-}
diff --git a/custom-typings/warning.d.ts b/custom-typings/warning.d.ts
deleted file mode 100644
index 19714209e7..0000000000
--- a/custom-typings/warning.d.ts
+++ /dev/null
@@ -1,3 +0,0 @@
-declare module 'warning' {
-  export default function(condition: boolean, message: string): void;
-}