Description

I recently upgraded to react-native 0.39.2 from 0.37, and my command to run a production build on the emulator no longer works.

react-native run-android --configuration Release --variant prod --root artifacts/lib

Fails with the error:

Cannot find entry file index.android.js in any of the roots: ["/Users/Documents/reactApp"]

I'm using Typescript to compile assets into an artifacts folder, such that my directory structure is:

• reactApp
  • package.json
  • ios
  • android
    • gradle
    • ...
  • artifacts
    • lib
      • index.android.js
      • ...
    • ...
  • src
    • lib
      • index.android.ts
      • ...
    • ...

Reproduction

Have a directory structure similar to the one above where index.android.js is not in the main directory folder and run:
react-native run-android --configuration Release --variant prod

Solution

I believe this was caused by a pull request in 0.39, from @SandroMachado

2a2d3c6#diff-a003f89d34db18b4567fdb55080a003eR103

The react-native bundle command seems to assume the index.android.js exists in the root directory of a project, and no longer sets the process current directory to be the root arg passed in when running react-native run-android.

Additional Information

• React Native version: 0.39.2
• Platform: Android
• Operating System: MacOS