--- /dev/null
+// fallback for IE11 buggy Object.getOwnPropertyNames with iframe and window
+var toIObject = require('./_to-iobject')
+ , gOPN = require('./_object-gopn').f
+ , toString = {}.toString;
+
+var windowNames = typeof window == 'object' && window && Object.getOwnPropertyNames
+ ? Object.getOwnPropertyNames(window) : [];
+
+var getWindowNames = function(it){
+ try {
+ return gOPN(it);
+ } catch(e){
+ return windowNames.slice();
+ }
+};
+
+module.exports.f = function getOwnPropertyNames(it){
+ return windowNames && toString.call(it) == '[object Window]' ? getWindowNames(it) : gOPN(toIObject(it));
+};