Hello! I’m writing a library for KMM, and I would ...

# multiplatform

[Nikita Khlebushkin]

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:

[saket]

expect/actual is a bit strict on the API signatures

[Nikita Khlebushkin]

Is there a way to work around this?

[saket]

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

[saket]

also see #reaktive

[Nikita Khlebushkin]

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

[Nikita Khlebushkin]

I just saw this

[Nikita Khlebushkin]

And it seems to solve all of my problems

[Nikita Khlebushkin]

Thanks!

[saket]

you can always transform to platform streams

[saket]

fwiw I wrote Combine interop for my app: https://github.com/saket/press/blob/trunk/native/mac/mac/Interop/ReaktiveInterop.swift

[Nikita Khlebushkin]

Perfect, thanks!