Does polymorphic deserialisation work with sealed ...

# serialization

[aidanvii]

Does polymorphic deserialisation work with sealed interfaces? Just wondering as it’s ever so slightly less verbose than sealed classes.

[sindrenm]

Nope. I believe it's because you need @Serializable on the sealed type, which can't be applied to an interface, but there could be other reasons, too.

[aidanvii]

I found an open issue for it https://github.com/Kotlin/kotlinx.serialization/issues/1417

[pdvrieze]

Making serializable interfaces could be supported if all children are either sealed interfaces or class/object types. As such there is a little more complexity than obvious, but it is something that will likely be supported in the future.