make ensureProto methods non-enumerable

2014-12-14 12:18:03 +11:00
parent 194fb77b9c
commit bf40849e35
1 changed files with 5 additions and 1 deletions
--- a/lib/6to5/polyfill.js
+++ b/lib/6to5/polyfill.js
@@ -6,7 +6,11 @@ var ensureSymbol = function (key) {

 var ensureProto = function (Constructor, key, val) {
  var proto = Constructor.prototype;
-  proto[key] = proto[key] || val;
+  if (!proto[key]) {
+    Object.defineProperty(proto, key, {
+      value: val
+    });
+  }
 };

 //