Using JSR223, I have code that worked well in 1.4. Now with 1.6.10 I'm getting: javax.script.ScriptE...

# scripting

[Tobias]

Using JSR223, I have code that worked well in 1.4. Now with 1.6.10 I'm getting:
javax.script.ScriptException: ERROR Inheritance from an interface with '@JvmDefault' members is only allowed with -Xjvm-default option (ScriptingHost6cabebe2_Line_0.kts51)

[Tobias]

I've now trying to figure out some way to either put Xjvm-default=all into the ScriptEngine returned by ScriptEngineManager().getEngineByExtension("kts") and failing miserably. I've also tried to make sure the class I use do not have any default jvm methods, but the main purpose of the script is returning a Comparator (which is an interface with default methods). Code is something similar to this:

Main.kt

interface Sorter {
    val comparator: Comparator<Foobar>
}

fun getSorter() {
     ScriptEngineManager().getEngineByExtension("kts")!!.eval("script.kts") as Sorter
}

script.kts

object : Sorter {
    override val comparator: Comparator<Foobar>
        get() = compareByDescending<Foobar> { it.foo }
}

[Tobias]

I've also tried (without success) to try to add @file:CompilerOptions("-Xjvm-default=all") in the script. What am I missing?

[Ivan Kubyshkin [JetBrains]]

Can you file an issue, please - https://kotl.in/issue?

[Tobias]

Sure, so it's a probable issue and not just me configuring it poorly?

[Ivan Kubyshkin [JetBrains]]

We’ll investigate.

[Tobias]

https://youtrack.jetbrains.com/issue/KT-51362

[Tobias]

TIA

[Tobias]

For anyone following this conversation: The bug was updated. It has nothing to do with Comparator and everything to do with -Xjvm-default=all that we compile our Kotlin code with