Hello! I’m writing a library for KMM, and I would need to have: commonMain/…/RxUtils.kt:

expect class Observable<T>

androidMain/…/RxUtils.kt:

actual typealias Observable<T> = io.reactivex.rxjava3.core.Observable<T>

…but:

expect/actual is a bit strict on the API signatures

Is there a way to work around this?

I’d suggest using a first-party library instead, something like reaktive: https://github.com/badoo/Reaktive or flow (is it ready yet?)

The drawback of using Reaktive (if I understood it correctly) is that the library’s methods return types will also be Reaktive types, no?

you can always transform to platform streams

Perfect, thanks!