I'm working on a presentation around Kotlin Multiplatform. I've got a simple KMM app working, but to make the demonstration more compelling as an alternative to our code sharing strategies, I'm also trying to build the common (multiplatform) library with an npm library artifact that I can consume in a NextJS app. However, I've not figured out a way to get the package version to appear in the generated package.json—which makes consuming it as an npm package problematic.

Knapsack# cat build/js/package.json
{
  "name": "Knapsack",
  "version": "unspecified",
  "private": true,
  "workspaces": [
    "packages/Knapsack-common",

I've tried to configure it a few different ways, but the current code https://github.com/jzbrooks/Knapsack/blob/1a720273a148cade22d068108528ccbe5906ce2a/common/build.gradle.kts#L13. I searched the issue tracker since but didn't find anything relevant. Does anyone know what I'm missing?

Hi, I am running into

error: use of '@import' when modules are disabled

Trying to integrate an analytics library Snowplow. added the relevant pod

cocoapods {
        pod("SnowplowTracker")
    }

Log Task :cinteropSnowplowTrackerIosArm64

Exception in thread "main" java.lang.Error: ../build/cocoapods/synthetic/IOS/build/Release-iphoneos/SnowplowTracker/SnowplowTracker.framework/Headers/SPSnowplow.h:31:1: error: use of '@import' when modules are disabled
at org.jetbrains.kotlin.native.interop.indexer.UtilsKt.ensureNoCompileErrors(Utils.kt:274)
        at org.jetbrains.kotlin.native.interop.indexer.IndexerKt.indexDeclarations(Indexer.kt:1196)
        at org.jetbrains.kotlin.native.interop.indexer.IndexerKt.buildNativeIndexImpl(Indexer.kt:1185)
        at org.jetbrains.kotlin.native.interop.indexer.IndexerKt.buildNativeIndexImpl(Indexer.kt:1181)
        at org.jetbrains.kotlin.native.interop.gen.jvm.DefaultPlugin.buildNativeIndex(Plugins.kt:33)
        at org.jetbrains.kotlin.native.interop.gen.jvm.MainKt.processCLib(main.kt:289)
        at org.jetbrains.kotlin.native.interop.gen.jvm.MainKt.processCLibSafe(main.kt:214)
        at org.jetbrains.kotlin.native.interop.gen.jvm.MainKt.interop(main.kt:80)
        at org.jetbrains.kotlin.cli.utilities.InteropCompilerKt.invokeInterop(InteropCompiler.kt:45)
        at org.jetbrains.kotlin.cli.utilities.MainKt.mainImpl(main.kt:40)
        at org.jetbrains.kotlin.cli.utilities.MainKt.main(main.kt:62)

Any workarounds for this?

We (developers at Nimble) just built a KMM library https://github.com/nimblehq/jsonapi-kotlin that supports decoding JSON:API string response. I saw many ppl ask about it (and me too) so feel free to use it. Please don’t forget to give us a star 🌟 It’s being published via GitHub Packages so please check the installation section.

@Serializable
data class ExampleModel(val title: String)

val body = """
{
  "data": {
    "type": "articles",
    "id": "1",
    "attributes": {
      "title": "JSON:API paints my bikeshed!"
    }
  }
}
"""

val json = Json {
    prettyPrint = true
    isLenient = true
    ignoreUnknownKeys = true
}
val data = JsonApi(json).decodeFromJsonApiString<ExampleModel>(body)

Hi! Created a new project with 2 gradle modules, both KMM (1.7.20) and when I add dependency I see this warning. Everything compiles fine, but I'd still like to resolve this warning somehow:

I'm working on a KMM library, using cinterop and having some issues when I export my library to a framework 🧵

Has anyone seen issues with unit testing and codesigning? I am seeing this error when running unit tests on my M1 Mac running macOS 13.1:

> Task :Shared:macosArm64Test FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':Shared:macosArm64Test'.
> command '/Users/conradev/Projects/Wallet/Shared/build/bin/macosArm64/debugTest/test.kexe' exited with errors (exit code: 137)

and the corresponding log in the system log is generated:

default	14:14:45.212066-0800	kernel	ASP: Security policy would not allow process: 43402, /Users/conradev/Projects/Wallet/Shared/build/bin/macosArm64/debugTest/test.kexe

How would I set up Gradle to build a multiplatform native library? (i.e. wasm for JS, native with JNI for Android + desktop, etc)

Hi all. I'm running into issues when exporting my sealed types across multiple modules. For example, my module setup is

:app
⎿:feature-1
⎿:feature-2

:app

is the only module I'm depending on from iOS, but I am exporting my feature modules. I can export sealed types from

:app

just fine

sealed class AppSealedType {
  object AppTypeA: AppSealedType()
  object AppTypeB: AppSealedType()
}

And they do show up on the swift side. However, when I define a seal type on one of the

:feature-x

modules

sealed class FeatureSealedType {
  object FeatureTypeA: AppSealedType()
  object FeatureTypeB: AppSealedType()
}

Only the top seal interface is exported. I can trick the tooling to "force" export the sealed child types by referencing them in the

iosMain

of the

:app

as a workaround

val FeatureTypeA = FeatureSealedType.FeatureTypeA

When I do that, the child types are exported Is this a known bug/limitation? Is there a way export all child types of my sealed types? More details in the 🧵

Hi Folks! Is there a way to tell a KMP project to NOT fetch a common dependency for 1 particular platform For example, this dependency:

implementation("dev.icerock.moko:kswift-runtime:0.6.1")

is only available for KMM but my project supports Android, iOS, and Web as well. So can I instruct KMP to not fetch its deps for JS?

Cross posting for visibility. If anyone could point me in the right direction, I'd really appreciate it. https://kotlinlang.slack.com/archives/C19FD9681/p1671824807177329

WorldWindKotlin - the first Kotlin multi-platform 3D GIS update 1.1.5 released https://github.com/WorldWindEarth/WorldWindKotlin/releases/tag/v1.1.5

Is it possible to develop a KMM library and app in tandem? I mean is there a workflow where I can make changes to the library, make corresponding changes to the app, and build & run to test? Or must I first publish my library changes (to MavenLocal for example), update dependencies in my app, make my app changes, and only then can I build and test?

Is there a reason why

jvmMain

source set access is not provided by Kotlin DSL (unsure how this works…)? For example, following:

kotlin {
  android()
  jvm()

  sourceSets {
    val commonMain by getting {
      // ...
    }
    
    val androidMain by getting {
      // ...
    }
    
    val jvmMain by getting {
      // ...
    }
  }
}

Can be replaced with this, except for

jvmMain

:

kotlin {
  android()
  jvm()

  sourceSets {
    commonMain {
      // ...
    }

    androidMain {
      // ...
    }

    // `jvmMain` extension is not provided
    val jvmMain by getting {
      // ...
    }
  }
}

Has anyone tried out korge? Do you have any thoughts on how complete / ready for production it is?

Hello and Marry Christmas 🎄 I have an issue where adding a kmm module (i.e domain) module to shared module results with Prefix added to the generated iOS classes, for example User class under domain will be DomainUser in iOS How can I remove this prefix in build.gradle Thanks

Hi folks Merry Christmas 🎄 I've been facing this same error: https://stackoverflow.com/questions/70632359/using-kmm-shared-library-for-use-in-xcode-gives-several-warnings-and-errors-when Unfortunately, there are no responses on this SOF post. Could we please have a look at it?

Has anyone tried https://github.com/korlibs/kproject before? It basically seems like carthage for kotlin. If it actually does what it sounds like... being able to publish libraries while not having to mess with maven central... that'd be amazing...

It works )

DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) {
    if value == range {
        onValueChangeFinished(value.map { Double($0) })
    }
}

can I use ktor logger in shared module in kmm ?

android()

configures

androidMain

that depends on

commonMain

already, you can probably drop 29-31 configuration.

I'm trying out Android Studio 2022.1.1 RC3 and it seems like the KMM plugin isn't able to start iOS tests from within the IDE. I only get this in the logs:

FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':shared-br-network:iosSimulatorArm64Test'.
> No value present

If I open the project in 2021.3 everything works as expected, also when I use

./gradlew :shared-network:iosSimulatorArm64Test

I wrote a test in commonMain, it uses

= runTest

and internally it uses

GlobalScope.launch

but this call is blocking forever and the callback I'm passing to it doesn't ever run, how can I debug this?

Updating MPP module to Kotlin 1.8.0, trying to get rid of this new warning:

Multiplatform/Android-V1-SourceSetLayout: Multiplatform/Android-V1-SourceSetLayout is deprecated...

I add it then I get new warnings:

Multiplatform/Android-V2-SourceSetLayout: Usage of 'Android Style' source directory

are there any docs on this new V2 layout. Migration guide perhaps?

And thank you so much for fixing this issue: https://youtrack.jetbrains.com/issue/KT-47355 My gradle file is sooo much cleaner without the workaround in there...

In Kotlin Multiplatform for Mobile, how we can write unit test to check intermediate values of

KLiveData

, can anyone give an example ?

is there any way so that we can add dependencies like for firebase in shared dependency and write code for multiple platform in single go

Hi everyone 👋 I am trying to add

DataDog

library in iosMain part of the KMM project. But Somehow I can not import the library into Kotlin file. Here is the ticket that I opened yesterday. https://youtrack.jetbrains.com/issue/KT-55687/Can-not-add-DataDog-Dependency-via-CocoaPods-in-Kotlin-Multiplatform-Mobile-Project I really appreciate if you guide me. Thanks.

x-posting here coz it is also relevant https://kotlinlang.slack.com/archives/C0B8H786P/p1672383513031109