Can anyone provide any insight on what causes this...

# javascript

[Alex Edwards]

Can anyone provide any insight on what causes this issue, I’m trying to build a project with IR

> Task :idmapi-entrypoints:compileProductionExecutableKotlinJs FAILED
e: java.lang.IllegalStateException: Not found Idx for private com.mypackage/|null[0]:40
        at org.jetbrains.kotlin.backend.common.serialization.IrFileDeserializer.loadTopLevelDeclarationProto(IrFileDeserializer.kt:48)
        at org.jetbrains.kotlin.backend.common.serialization.IrFileDeserializer.deserializeDeclaration(IrFileDeserializer.kt:39)
        at org.jetbrains.kotlin.backend.common.serialization.FileDeserializationState.deserializeAllFileReachableTopLevel(IrFileDeserializer.kt:139)
        at org.jetbrains.kotlin.backend.common.serialization.ModuleDeserializationState.deserializeReachableDeclarations(BasicIrModuleDeserializer.kt:172)
        at org.jetbrains.kotlin.backend.common.serialization.BasicIrModuleDeserializer.deserializeReachableDeclarations(BasicIrModuleDeserializer.kt:148)

com.mypackage is another of my projects that this project depends on i have also compiled it with js(IR) but the issue could be that i’m still missing something there but its unclear from this error

[turansky]

Do you use similar Kotlin versions for projects?

[Alex Edwards]

it looks like all my projects are using the 1.5.31 gradle plugin it does look like there might be a minor version difference with org.jetbrains.kotlinx:kotlinx-serialization-json with 1.2.1 & 1.3.0

[Alex Edwards]

Do yo know what this error means?

[turansky]

Could you sync runtime versions?

[turansky]

1.3.0 for both

[turansky]

Do yo know what this error means?

Non-synchronized versions - first candidate

[Alex Edwards]

I can do that, but in the interim i connected a debugger and the detailed message from there is NPM dependencies should be resolved

[Alex Edwards]

All of these ideas were wrong! The issue was

private const val A_CONST = 100

expect class MyClient(env: Deferred<Map<String, String>>) {
  fun myMethod(aParam: Int = A_CONST)
}

This code generated a module_0 file that just contained the constant and nothing else. Removing the constant and replacing with the following fixed it

expect class MyClient(env: Deferred<Map<String, String>>) {
  fun myMethod(aParam: Int = 100)
}

I think this is probably an IR/JS bug?

[turansky]

Looks like bug

[andylamax]

been having this bug of default parameters as well.

[Alex Edwards]

Is there a ticket for this one I couldn’t find it?