Internal error for if expression

[devcrocod]

When executing the following code:

fun test() {
    if() {    }
}

error:

Back-end (JVM) Internal error: Failed to generate expression: KtIfExpression
File being compiled: (2,5) in Line_1.jupyter.kts
The root cause java.lang.IllegalArgumentException was thrown at: org.jetbrains.kotlin.codegen.ExpressionCodegen.$$$reportNull$$$0(ExpressionCodegen.java)

I expect compilation error in readable form.

[ileasile]

Should be fixed in the latest version 0.7.41.254.dev1, please check

[devcrocod]

It works, thanks.

It also works with when. But doesn't emphasize where the error is, is it normal?

[ileasile]

Cannot reproduce it. For me error is emphasized. Recheck it please for version 0.7.41.255.dev8

[devcrocod]

I found that this does not work in jupyter-lab. Now if and when are not underlined on error for version 0.7.41.255.dev8.
In jupyter-notebook it works correctly.

[ileasile]

It should not work in Lab, because JS extension is only applicable to jupyter-notebook frontend. Error messages are sent, but not rendered. Same thing for completion: it works only for Tab, not on type.

[ileasile]

So, if it's ok in Notebook, I will close the issue