additional check for iterators prototype, close #289

zloirock · Apr 29, 2017 · cb30530 · cb30530
1 parent b5601ac
commit cb30530
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/library/modules/_iter-define.js b/library/modules/_iter-define.js
@@ -37,7 +37,7 @@ module.exports = function(Base, NAME, Constructor, next, DEFAULT, IS_SET, FORCED
   // Fix native
   if($anyNative){
     IteratorPrototype = getPrototypeOf($anyNative.call(new Base));
-    if(IteratorPrototype !== Object.prototype){
+    if(IteratorPrototype !== Object.prototype && IteratorPrototype.next){
       // Set @@toStringTag to native iterators
       setToStringTag(IteratorPrototype, TAG, true);
       // fix for some old engines

diff --git a/modules/_iter-define.js b/modules/_iter-define.js
@@ -37,7 +37,7 @@ module.exports = function(Base, NAME, Constructor, next, DEFAULT, IS_SET, FORCED
   // Fix native
   if($anyNative){
     IteratorPrototype = getPrototypeOf($anyNative.call(new Base));
-    if(IteratorPrototype !== Object.prototype){
+    if(IteratorPrototype !== Object.prototype && IteratorPrototype.next){
       // Set @@toStringTag to native iterators
       setToStringTag(IteratorPrototype, TAG, true);
       // fix for some old engines