Hi, I'm new to kotlin multiplatform and I want to create a multiplatform library using coroutines an...

# multiplatform

[Hannes]

Hi,
I'm new to kotlin multiplatform and I want to create a multiplatform library using coroutines and Flow. Is there any material how to get started with that? I looked into existing multiplaform libraries configs on github and copied most build.gradle config but I get a lot of unresolved reference errors while compiling:

library/src/commonMain/kotlin/com/freeletics/flowredux/FlowRedux.kt: (7, 32): Unresolved reference: Flow

[louiscad]

You need to depend on the native artifact in commonMain.

[Hannes]

I'm including api "org.jetbrains.kotlinx:kotlinx-coroutines-core-common:1.3.2". Is there another "native artifact"?

[Hannes]

Ah, it looks like org.jetbrains.kotlinx:kotlinx-coroutines-core-native:1.3.2 works, thanks for your help @louiscad

[Hannes]

Is 'org.jetbrains.kotlin:kotlin-stdlib-common' the proper artifact to include in commonMain or is there another "native artifact" for stdlib I have to use?

[louiscad]

Yes, with native in place of common, and it works for Android too, because it holds all the Gradle metadata (Gradle 5.3+ required) that links to the right artifacts for each supported platform. You just have to declare it for commonMain. Note that 1.3.2 is Kotlin/Native 1.3.50 only. Use 1.3.2-1.3.60 or 1.3.2-native-mt-1 for Kotlin/Native 1.3.60.

[louiscad]

Kotlin/Native stdlib is included by the compiler, no dependency to declare.

[Hannes]

ah, thanks

[mbonnin]

Is it just me or that feels quite unintuitive ? Common shouldn't know anything about native, right ?

[louiscad]

The naming of the artifact, yes, but it's like that for historical reasons and will change sometime.