[fixed] check for both window and document.createElement.

Author: diasbruno

src/components/Modal.js

@@ -8,9 +8,9 @@ import SafeHTMLElement from '../helpers/safeHTMLElement';
 export const portalClassName = 'ReactModalPortal';
 export const bodyOpenClassName = 'ReactModal__Body--open';
 
-const canUseDOM = typeof window !== 'undefined' || (
-  typeof document !== 'undefined' && document.createElement
-);
+const canUseDOM = typeof window !== 'undefined' &&
+  typeof document !== 'undefined' &&
+  typeof document.createElement === 'function';
 
 const isReact16 = ReactDOM.createPortal !== undefined;
 const createPortal = isReact16 ?