Does anybody happen to know if there’s already a bug open for this problem:

@JsExport
sealed class Foo {
  abstract val bar: Boolean
  
  data class AFoo(override val bar: Boolean) : Foo()
}

AFoo

will come out with a mangled

bar

.

Oh, wow. I'm not sure, that we know about it. Could you please create the ticket?

Not exactly related, but two other issues mention similar

sealed

problems https://youtrack.jetbrains.com/issue/KT-39193 https://youtrack.jetbrains.com/issue/KT-52800 Maybe looking at one of them will solve every one of them 👀

👍 I created https://youtrack.jetbrains.com/issue/KT-62265/KJS-overriden-property-from-sealed-class-parent-is-mangled-in-child-class