hi guys. What would be the proper way to shade the `kotlin-stdlib`. I have to do this as one of the ...

# getting-started

[Abhilash Mandaliya]

hi guys.
What would be the proper way to shade the kotlin-stdlib. I have to do this as one of the dependency of my project brings older version of kotlin and I face issues at runtime. I tried using the standard johnrengelman gradle plugin to shade the library and it worked well. The problem is, it converts kotlin code to java code in the shaded library. I loose all suspend functions in the shaded file and stuck at it. How can I deal with it?

Thanks in advance 🙂

[hfhbd]

What do you mean with converting? This is very strange. It shouldn`t and doesn’t convert any code.

[Abhilash Mandaliya]

what I mean by example:
runBlocking in normal file looks like this:

@Throws(InterruptedException::class)
public actual fun <T> runBlocking(context: CoroutineContext, block: suspend CoroutineScope.() -> T): T {
// some code
}

the same runBlocking from the shaded file:

public static final <T> T runBlocking(@NotNull CoroutineContext context, @NotNull Function2<? super CoroutineScope, ? super Continuation<? super T>, ? extends Object> block) throws InterruptedException {
        return BuildersKt__BuildersKt.runBlocking(context, block);
    }

[Abhilash Mandaliya]

Thanks for the help @hfhbd 🙂

[ephemient]

This has nothing to do with converting. The bytecode is simply not being recognized as Kotlin/suspending when the metadata is renamed by the shading. It still works the same.

[ephemient]

note that if you shade kotlin-stdlib, even if you adjust the rules to not touch metadata (I don't know if it's possible with shadow, I know it is with r8), your suspend funs will not work with external Kotlin callers. why do you even want to do this?

[ephemient]

The shadow plugin is problematic in Kotlin code generally, since it will rename what it thinks are package references, including literal strings "kotlin" in your code, breaking it

[Abhilash Mandaliya]

Thanks for the thorough response @ephemient. Will look back at my usecase and see if I can avoid shading. Or will ask for more help with more details if I can't 🙂