Is there a built in way to convert a

Throwable

into a

NSError

or

NSException

?

Yes. https://kotlinlang.org/docs/reference/native/objc_interop.html#errors-and-exceptions

I don’t see anything related to what I asked

So if Swift or Objective-C code calls a Kotlin method which throws an exception to be handled, then the Kotlin method should be marked with a @Throws annotation. In this case all Kotlin exceptions (except for instances of Error, RuntimeException and subclasses) are translated into a Swift error/NSError.

The interoperability should handle that for you.

Not really, I just have a function that has a

Throwable

parameter and calls a function taking a

NSError

. I’m not talking about automatic thrown error translation

Still an open question.

I also like to hear the answer