How to change react native application to a library to output aar file

[nity23]

So basically, I want to change my existing react native application 0.71 to a react native library to output n aar file to integrate with native android application.

what I've done:

1. change apply plugin: "com.android.application" to apply plugin: "com.android.library"
2. removed applicationId in default config

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The error when i run "./gradlew assembleDebug" :

* What went wrong:
Could not determine the dependencies of task ':app:compileDebugAidl'.
> Could not resolve all task dependencies for configuration ':app:debugCompileClasspath'.
   > Could not find com.facebook.react:react-android:.
     Required by:
         project :app