I'm trying to use a custom definition for kts file...

# scripting

[martmists]

I'm trying to use a custom definition for kts files, but I can't seem to get intellij to pick up on the project's script definitions for declared variables. Is there a guide for this?

[Vladislav Koshkin]

Hi, things have shifted a lot, so I guess there is no up-to-date step-by-step documentation on custom scripting but I can try to help you in this thread;

What do you have now and what are you trying to achieve?

[Vladislav Koshkin]

there is up-to-date repo with some examples here: https://github.com/Kotlin/kotlin-script-examples/blob/master/jvm/simple-main-kts/SimpleMainKts.md

[Vladislav Koshkin]

also I've listed the issue on that https://youtrack.jetbrains.com/issue/KTIJ-38917
upvote if you think we need it

[martmists]

Right now I've got:

@KotlinScript(
    displayName = "Game Script",
    fileExtension = "script.kts",
    compilationConfiguration = GameScriptDefinition::class
)
abstract class GameScript

object GameScriptDefinition : ScriptCompilationConfiguration({
    defaultImports()

    providedProperties(
        "game" to GameManager::class,
    )
}) {
    private fun readResolve(): Any = GameScriptDefinition
}

as well as a com.intercept.script.GameScript file in the same meta-inf directory, but game is unresolved in IJ.

[martmists]

I've already tried to invalidate caches, import it as subproject, but neither seemed to work

[Vladislav Koshkin]

what IDEA version are you using atm?

[martmists]

IntelliJ IDEA 2026.1
Build #IU-261.22158.277, built on March 25, 2026
Source revision: 89c647576f1d2

[Vladislav Koshkin]

can you show me Kotlin Scripting settings?

[martmists]

Where can I find those?

[Vladislav Koshkin]

In regular 'Settings' window

[martmists]

I tried adding com.intercept.script.GameScript in the script definition classes to load section but search didnt find anything

[Vladislav Koshkin]

have you built you project? for example with gradle jar task?

[martmists]

Yes, I've ran main.kt several times

[Vladislav Koshkin]

I'm not sure it's similar, I need exact .jar file with the script definition to be in /build/ folder or /out folder

[Vladislav Koshkin]

can you check or show me if it's there?

[martmists]

It's not, though it's weird that that's required.

[Vladislav Koshkin]

it's kinda weird. but otherwise how can you provide the parity with running from cli?
we need to provide definition classpath to kotlinc when we execute from terminal

[Vladislav Koshkin]

but the tooling can be better from our side, that's for sure

[Vladislav Koshkin]

did it work?

[Vladislav Koshkin]

but the tooling can be better from our side, that's for sure

but it's hard to do so without a proper amount of use-cases

[martmists]

It found the definition, but it's still marking the variable as an unresolved reference in IDE

[martmists]

At this point it would probably be easier to write a FIR plugin to resolve the type of the variable and enable project plugins in IJ

[martmists]

Looks like it was caused by the Junie plugin, disabling it and reloading configuration seemed to work. It does reset the custom scripts every time I close the project though

[Vladislav Koshkin]

it's known problem and it's already fixed here: https://kotlinlang.slack.com/archives/C0BT46EL8/p1779663143444759?thread_ts=1777439807.861859&cid=C0BT46EL8

[Vladislav Koshkin]

we can check your use-case in the following EAP