From 07e4974bad015a44c2da488c80a494318007e58d Mon Sep 17 00:00:00 2001
From: "Sebastian \"Sebbie\" Silbermann" <sebastian.silbermann@vercel.com>
Date: Mon, 22 Sep 2025 16:51:57 +0200
Subject: [PATCH] [compiler] Don't leak global `__DEV__` type (#34551)

---
 compiler/packages/babel-plugin-react-compiler/src/index.ts  | 1 +
 compiler/packages/babel-plugin-react-compiler/tsconfig.json | 1 +
 2 files changed, 2 insertions(+)

diff --git a/compiler/packages/babel-plugin-react-compiler/src/index.ts b/compiler/packages/babel-plugin-react-compiler/src/index.ts
index a8b934160a..c5d8c4cb6e 100644
--- a/compiler/packages/babel-plugin-react-compiler/src/index.ts
+++ b/compiler/packages/babel-plugin-react-compiler/src/index.ts
@@ -51,6 +51,7 @@ export {
 } from './ReactiveScopes';
 export {parseConfigPragmaForTests} from './Utils/TestUtils';
 declare global {
+  // @internal
   let __DEV__: boolean | null | undefined;
 }
 
diff --git a/compiler/packages/babel-plugin-react-compiler/tsconfig.json b/compiler/packages/babel-plugin-react-compiler/tsconfig.json
index afca5f9beb..f2f1eb5535 100644
--- a/compiler/packages/babel-plugin-react-compiler/tsconfig.json
+++ b/compiler/packages/babel-plugin-react-compiler/tsconfig.json
@@ -10,6 +10,7 @@
     "importsNotUsedAsValues": "remove",
     "noUncheckedIndexedAccess": false,
     "noUnusedParameters": false,
+    "stripInternal": true,
     "useUnknownInCatchVariables": true,
     "target": "ES2015",
     // ideally turn off only during dev, or on a per-file basis