refactor(component): add interface to UISref Component

Author: sisisin

src/components/UISref.tsx

@@ -17,17 +17,20 @@ import { UISrefActiveConsumer } from './UISrefActive';
 let classNames = _classNames;
 
 export interface UISrefProps {
-  router: UIRouterReact;
-  addStateInfoToParentActive: Function;
-  parentUIView: UIViewAddress;
   children?: any;
   to: string;
   params?: { [key: string]: any };
   options?: TransitionOptions;
   className?: string;
 }
 
-class Sref extends Component<UISrefProps, any> {
+interface SrefProps extends UISrefProps {
+  router: UIRouterReact;
+  addStateInfoToParentActive: Function;
+  parentUIView: UIViewAddress;
+}
+
+class Sref extends Component<SrefProps, any> {
   // deregister function for parent UISrefActive
   deregister: Function;
   static propTypes = {
@@ -90,7 +93,7 @@ class Sref extends Component<UISrefProps, any> {
   }
 }
 
-export const UISref = props => (
+export const UISref = (props: UISrefProps) => (
   <UIRouterConsumer>
     {router => (
       <UIViewConsumer>