From 1789d3e1f52f687f72181305958f205d45febb16 Mon Sep 17 00:00:00 2001
From: Denis Pushkarev <zloirock@zloirock.ru>
Date: Sat, 8 May 2021 20:55:08 +0300
Subject: [PATCH] fix some cases of `Function#toString` with multiple `core-js`
 instances

---
 CHANGELOG.md                                 | 2 +-
 packages/core-js/internals/internal-state.js | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index c1ba8038aae1..e9e774367b1e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 ## Changelog
 ##### Unreleased
-- Nothing
+- Fixed some cases of `Function#toString` with multiple `core-js` instances
 
 ##### 3.12.0 - 2021.05.06
 - Added well-known symbol `Symbol.metadata` for [decorators stage 2 proposal](https://github.com/tc39/proposal-decorators)
diff --git a/packages/core-js/internals/internal-state.js b/packages/core-js/internals/internal-state.js
index 82b742c77730..0dbeda3d5bec 100644
--- a/packages/core-js/internals/internal-state.js
+++ b/packages/core-js/internals/internal-state.js
@@ -24,7 +24,7 @@ var getterFor = function (TYPE) {
   };
 };
 
-if (NATIVE_WEAK_MAP) {
+if (NATIVE_WEAK_MAP || shared.state) {
   var store = shared.state || (shared.state = new WeakMap());
   var wmget = store.get;
   var wmhas = store.has;