A modern programming language that makes developers happier.

kotlinlang

For example: if this directory had these classes:
```
class Foo {
   fun bar() {
        println("bar")
   }

   internal fun bar2() {
        println("bar2")
   }
}

internal class Foo2
```

It might output something like:
```
// public_api.txt
class Foo {
   fun bar()
}
```

I maintain a project that does pretty much that. Orchid generates a full website using data pulled from Dokka (<https://orchid.netlify.com/plugins/OrchidKotlindoc>), or the internals can be used simply as a library which produces a JSON model of your Kotlin code (<https://github.com/copper-leaf/dokka-json>). You could use that library to create the text files you want