Is implementation by delegation not supported on K/N? In a multiplatform project, `class ListLike(va...

# kotlin-native

[Brian Stanek]

Is implementation by delegation not supported on K/N?
In a multiplatform project,
class ListLike(val list: List<String>) {}
works great, but
class ListLike(val list: List<String>) : List<String> by list {}
does not generate an entry in the iOS framework. However, the javascript modules does create all the delegating methods.
Is this a known limitation?

[svyatoslav.scherbina]

Is this a known limitation?

Yes.
Some special classes like custom collection implementations aren’t included to framework API.

[svyatoslav.scherbina]

So this is not related to delegation which is fully supported.

[Brian Stanek]

Got it - thanks for the quick reply

[Brian Stanek]

@svyatoslav.scherbina I think I misunderstood the scope of things earlier - it appears that I can’t even manually implement the methods of List

[Brian Stanek]

As soon as my class claims to inherit/implement List<String>, it disappears from the framework

[Brian Stanek]

Is there a workaround possible?

[svyatoslav.scherbina]

Consider keeping List subclasses in Kotlin.