All imports are undefined in new metro config (react-native 0.72 and higher)

minimal-repro.zip

Bug Description

After upgrading from React Native 0.71 to 0.73, applications using module path aliases in Metro config crash with TypeError: Cannot read property 'rootReducer' of undefined when importing modules via configured aliases.

Steps to Reproduce

1. Set up RN 0.73 project with Metro alias configuration:

   // metro.config.js
   alias: { src: path.resolve(__dirname, 'src') }
   

2. Configure Babel module resolver:

   // .babelrc
   ["module-resolver", { "alias": { "src": "./src" } }]
   

3. Import module using alias:

   // src/App.tsx
   import { rootReducer } from 'src/core/reducer';
   

4. Run the app

Expected Behavior

App should start normally and import modules correctly via configured aliases.

Actual Behavior

App crashes with error:

TypeError: Cannot read property 'rootReducer' of undefined

Environment

• React Native: 0.73.11
• Metro: 0.73.5
• Platform: Android/iOS
• Previous working version: RN 0.71

Additional Context

The issue appears to be related to changes in Metro's module resolution in RN 0.73. The same configuration works fine in RN 0.71. Module imports using relative paths work correctly, only alias-based imports fail.

Reproduction

Minimal reproduction case attached in the linked repository.

Start with the attached minimal reproduction and inspect metro.config.js, .babelrc, and src/App.tsx. Run the React Native 0.73.11 reproduction with the alias import, then compare alias resolution with the working React Native 0.71 setup. Done means aliased imports resolve without the undefined-module crash on Android and iOS.