add a workaround of a specific case of broken Object.prototype, close

#973
zloirock · Aug 18, 2021 · 0436d71 · 0436d71
1 parent 81acbc8
commit 0436d71
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,6 +1,6 @@
 ## Changelog
 ##### Unreleased
-- Nothing
+- Added a workaround of a specific case of broken `Object.prototype`, [#973](https://github.com/zloirock/core-js/issues/973)
 
 ##### 3.16.2 - 2021.08.17
 - Added a workaround of a Closure Compiler unsafe optimization, [#972](https://github.com/zloirock/core-js/issues/972)

diff --git a/packages/core-js-pure/override/internals/export.js b/packages/core-js-pure/override/internals/export.js
@@ -43,7 +43,7 @@ module.exports = function (options, source) {
 
   var nativeSource = GLOBAL ? global : STATIC ? global[TARGET] : (global[TARGET] || {}).prototype;
 
-  var target = GLOBAL ? path : path[TARGET] || (path[TARGET] = {});
+  var target = GLOBAL ? path : path[TARGET] || createNonEnumerableProperty(path, TARGET, {})[TARGET];
   var targetPrototype = target.prototype;
 
   var FORCED, USE_NATIVE, VIRTUAL_PROTOTYPE;
@@ -80,15 +80,15 @@ module.exports = function (options, source) {
       createNonEnumerableProperty(resultProperty, 'sham', true);
     }
 
-    target[key] = resultProperty;
+    createNonEnumerableProperty(target, key, resultProperty);
 
     if (PROTO) {
       VIRTUAL_PROTOTYPE = TARGET + 'Prototype';
       if (!has(path, VIRTUAL_PROTOTYPE)) {
         createNonEnumerableProperty(path, VIRTUAL_PROTOTYPE, {});
       }
       // export virtual prototype methods
-      path[VIRTUAL_PROTOTYPE][key] = sourceProperty;
+      createNonEnumerableProperty(path[VIRTUAL_PROTOTYPE], key, sourceProperty);
       // export real prototype methods
       if (options.real && targetPrototype && !targetPrototype[key]) {
         createNonEnumerableProperty(targetPrototype, key, sourceProperty);