diff --git a/packages/out-of-tree-platforms/package.json b/packages/out-of-tree-platforms/package.json
index 648226808be25f..b37d2b561ab1cd 100644
--- a/packages/out-of-tree-platforms/package.json
+++ b/packages/out-of-tree-platforms/package.json
@@ -12,7 +12,7 @@
   },
   "license": "MIT",
   "exports": { 
-    ".": "./dist/index.js",
+    ".": "./src/index.js",
     "./package.json": "./package.json" 
   },
   "files": [
diff --git a/packages/out-of-tree-platforms/src/getPlatformResolver.js b/packages/out-of-tree-platforms/src/getPlatformResolver.js
new file mode 100644
index 00000000000000..70e3acde5c1d78
--- /dev/null
+++ b/packages/out-of-tree-platforms/src/getPlatformResolver.js
@@ -0,0 +1,43 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow
+ * @format
+ */
+
+import type {CustomResolver} from 'metro-resolver';
+
+type ResolverConfig = {
+  platformNameMap: {[platform: string]: string},
+};
+
+/**
+ * Creates a custom Metro resolver that maps platform extensions to package names.
+ * To be used in app's `metro.config.js` as `resolver.resolveRequest`.
+ */
+export const getPlatformResolver = (config: ResolverConfig): CustomResolver => {
+  return (context, moduleName, platform) => {
+    // `customResolverOptions` is populated through `?resolver.platformExtension` query params
+    // in the jsBundleURLForBundleRoot method of the react-native/React/Base/RCTBundleURLProvider.mm
+    const platformExtension = context.customResolverOptions?.platformExtension;
+    let modifiedModuleName = moduleName;
+    if (
+      typeof platformExtension === 'string' &&
+      config.platformNameMap?.[platformExtension]
+    ) {
+      const packageName = config.platformNameMap[platformExtension];
+      if (moduleName === 'react-native') {
+        modifiedModuleName = packageName;
+      } else if (moduleName.startsWith('react-native/')) {
+        modifiedModuleName = `${packageName}/${modifiedModuleName.slice(
+          'react-native/'.length,
+        )}`;
+      }
+    }
+
+    return context.resolveRequest(context, modifiedModuleName, platform);
+  };
+};
diff --git a/packages/out-of-tree-platforms/src/index.js b/packages/out-of-tree-platforms/src/index.js
index a88b678821283b..2244b1ce77d29e 100644
--- a/packages/out-of-tree-platforms/src/index.js
+++ b/packages/out-of-tree-platforms/src/index.js
@@ -1,44 +1,5 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @flow
- * @format
- */
+if (!process.env.BUILD_EXCLUDE_BABEL_REGISTER) {
+  require('../../../scripts/build/babel-register').registerForMonorepo();
+}
 
-import type {CustomResolver} from 'metro-resolver';
-
-type ResolverConfig = {
-  platformNameMap: {[platform: string]: string},
-};
-
-/**
- * Creates a custom Metro resolver that maps platform extensions to package names.
- * To be used in app's `metro.config.js` as `resolver.resolveRequest`.
- */
-export const getPlatformResolver = (config: ResolverConfig): CustomResolver => {
-  return (context, moduleName, platform) => {
-    // `customResolverOptions` is populated through `?resolver.platformExtension` query params
-    // in the jsBundleURLForBundleRoot method of the react-native/React/Base/RCTBundleURLProvider.mm
-    const platformExtension = context.customResolverOptions?.platformExtension;
-    let modifiedModuleName = moduleName;
-
-    if (
-      typeof platformExtension === 'string' &&
-      config.platformNameMap?.[platformExtension]
-    ) {
-      const packageName = config.platformNameMap[platformExtension];
-      if (moduleName === 'react-native') {
-        modifiedModuleName = packageName;
-      } else if (moduleName.startsWith('react-native/')) {
-        modifiedModuleName = `${packageName}/${modifiedModuleName.slice(
-          'react-native/'.length,
-        )}`;
-      }
-    }
-
-    return context.resolveRequest(context, modifiedModuleName, platform);
-  };
-};
+export * from './getPlatformResolver';
diff --git a/packages/rn-tester/package.json b/packages/rn-tester/package.json
index e40163d7742843..4967d2551cf21a 100644
--- a/packages/rn-tester/package.json
+++ b/packages/rn-tester/package.json
@@ -25,7 +25,8 @@
   "dependencies": {
     "flow-enums-runtime": "^0.0.6",
     "invariant": "^2.2.4",
-    "nullthrows": "^1.1.1"
+    "nullthrows": "^1.1.1",
+    "@callstack/out-of-tree-platforms": "0.74.0"
   },
   "peerDependencies": {
     "react": "18.2.0",