update

Author: aspeddro

runtime/Jsx_common.res

@@ -22,9 +22,8 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
 
-// Define this as a private empty record so that the compiler does not
-// unnecessarily add `Primitive_option.some` calls for optional props.
-type element = private {}
+@notUndefined
+type element
 
 @val external null: element = "null"