[compiler] Don't leak global __DEV__ type (facebook#34551)

eps1lon · web-flow · commit 07e4974bad01 · 2025-09-22T16:51:57.000+02:00
diff --git 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
@@ -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

Original file line number	Diff line number	Diff line change
`@@ -51,6 +51,7 @@ export {`
`51`	`51`	`} from './ReactiveScopes';`
`52`	`52`	`export {parseConfigPragmaForTests} from './Utils/TestUtils';`
`53`	`53`	`declare global {`
	`54`	`+ // @internal`
`54`	`55`	`let __DEV__: boolean \| null \| undefined;`
`55`	`56`	`}`
`56`	`57`