From 0436d71e7cedeb955f4b557f991f4c3498a9b716 Mon Sep 17 00:00:00 2001
From: Denis Pushkarev <zloirock@zloirock.ru>
Date: Thu, 19 Aug 2021 03:12:34 +0700
Subject: [PATCH] add a workaround of a specific case of broken
 `Object.prototype`, close #973

---
 CHANGELOG.md                                       | 2 +-
 packages/core-js-pure/override/internals/export.js | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2ae4bffcf1af..e3dc942cf2a7 100644
--- 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
index 3369fea454db..cc6e57b52f65 100644
--- 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;
@@ -80,7 +80,7 @@ module.exports = function (options, source) {
       createNonEnumerableProperty(resultProperty, 'sham', true);
     }
 
-    target[key] = resultProperty;
+    createNonEnumerableProperty(target, key, resultProperty);
 
     if (PROTO) {
       VIRTUAL_PROTOTYPE = TARGET + 'Prototype';
@@ -88,7 +88,7 @@ module.exports = function (options, source) {
         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);