Full TS implementation in RouteDescription.tsx

Author: yuanjackie1

src/app/components/RouteDescription.tsx

@@ -7,7 +7,7 @@ type RouteProps = {
 const RouteDescription = (props: RouteProps): JSX.Element => {
   // Use new URL to use the url.pathname method.
   const { actions } = props;
-  const url = new URL(actions[0].props.routePath);
+  const url: URL = new URL(actions[0].props.routePath);
   return (
     <div className='routedescription'>
       <h3 className='route'>Route: {url.pathname}</h3>