Merge pull request #5159 from beawar/fix-portal-type-causing-missing-declaration

Fix types build by specifying return type on portal render method

Author: martijnrusschen

src/portal.tsx

@@ -46,7 +46,7 @@ class Portal extends Component<PortalProps> {
   private el: HTMLDivElement;
   private portalRoot: HTMLElement | null = null;
 
-  render() {
+  render(): React.ReactPortal {
     return ReactDOM.createPortal(this.props.children, this.el);
   }
 }