Fixes #13566. If there is a window object, and it has a document property, it...

Fixes #13566. If there is a window object, and it has a document property, it might be the window we want, so define jQuery and $. Thanks to @dcherman for saving us from that embarrassment!
Signed-off-by: Rick Waldron <waldron.rick@gmail.com>

src/exports.js

@@ -17,7 +17,8 @@ if ( typeof module === "object" && typeof module.exports === "object" ) {
 	}
 }
 
-// If there is a window object, define a jQuery and $
-if ( typeof window === "object" ) {
+// If there is a window object, that at least has a document property,
+// define jQuery and $ identifiers
+if ( typeof window === "object" && typeof window.document === "object" ) {
 	window.jQuery = window.$ = jQuery;
 }