From d25f265a2b032b9d8737abf8918088d1e73b987f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Hu=C3=A1ng=20J=C3=B9nli=C3=A0ng?= <jlhwung@gmail.com>
Date: Mon, 9 Oct 2023 23:03:39 -0400
Subject: [PATCH] Fix: fallback to typeof when toString is applied to
 incompatible object (#16017)

---
 packages/babel-helpers/src/helpers.ts | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/packages/babel-helpers/src/helpers.ts b/packages/babel-helpers/src/helpers.ts
index 6f101048e7c0..957e61e634c5 100644
--- a/packages/babel-helpers/src/helpers.ts
+++ b/packages/babel-helpers/src/helpers.ts
@@ -314,7 +314,12 @@ helpers.construct = helper("7.0.0-beta.0")`
 helpers.isNativeFunction = helper("7.0.0-beta.0")`
   export default function _isNativeFunction(fn) {
     // Note: This function returns "true" for core-js functions.
-    return Function.toString.call(fn).indexOf("[native code]") !== -1;
+    try {
+      return Function.toString.call(fn).indexOf("[native code]") !== -1;
+    } catch (e) {
+      // Firefox 31 throws when "toString" is applied to an HTMLElement
+      return typeof fn === "function";
+    }
   }
 `;