Hello! I'm trying to compile Kotlin into js using new Ir backend and 1.4-M1 version of Kotlin. But got compilation error:

Caused by: java.lang.AssertionError: Built-in class kotlin.Any is not found

My configuration: in gradle.properties:

kotlin.js.compiler=ir

In gradle.build

kotlin { 
  target { 
    useCommonJs()
    produceExecutable()
    browser {}
  }
}

Can we check in runtime whether the program is running on node.js or frontend JS?

Hello! How to add class/object static initializer in js generated code to be able to execute on js start without explicitly calling from main

object Test {
  init { // want to execute it on js start without calling Test from main method
    window.alert("test")
  } 
}

Hello, not sure if this belongs to js or #multiplatform , but will go ahead and ask here So the basic problem I'm trying to solve is to mimic the behaviour of having multiple modules for a target such that each individual 'module' can be built independently - having it's own tests and sources - so that one is working within that particular modules, one runs the test cases only for that module (thus, getting faster iteration cycles) Now, in multiplatform analogy, I believe this would translate to a

sourceSet

. I have configured a

custom sourceSet

as below

js {
        browser {}
        nodejs {
            useCommonJs()
        }

        val fooMain  by compilations.creating {
            nodejs {
                useCommonJs()
            }
            defaultSourceSet {
                dependencies {
                    api(kotlin("stdlib-js"))
                    implementation(npm("<some-dependency>","some-version"))
                }
            }
        }

        val fooTest by compilations.creating {
            defaultSourceSet {
                dependsOn(fooMain.defaultSourceSet)
                dependencies {
                    implementation(kotlin("test-js"))
                }
            }
        }

    }
  // Some other config 
  sourceSets {
        val jsMain by getting {
            dependsOn(getByName("fooMain"))
            // some more config
        }
  }

Now, the question is - How do I write a task that 'compiles and runs' the tests written in

fooTest

. The [documentation](https://kotlinlang.org/docs/reference/building-mpp-with-gradle.html#running-tests) mentions that

For Kotlin/JS targets, add kotlin-test-js as a test dependency. At this point, test tasks for Kotlin/JS are created but do not run tests by default; they should be manually configured to run the tests with a JavaScript test framework.

Now, I believe that means configuring a

KotlinJsTest

task that has

useMocha()

configured. However, I am unable to wire up such a task. Can someone please help me out? Also, apologies if this is present somewhere in the documentation - if it is, please direct me to it. If it isn't , please direct me how I can add it once I have the answer 🙂

Is DCE somehow built-in into the compiler in 1.4?

Hi everyone, is there a way to set Mocha timeout? The

timeout

parameter only works in node, not in browser

I have pure kotlin-js project, but I have some code which isn't JS specific (e.g., some state management) and I would like to run it's tests using JVM (so that they are faster to run). How should I configure such project? Would appreciate any hints.

What is the difference between

produceExecutable()

and

produceKotlinLibrary()

in Kotlin 1.4-M1 Gradle DSL?

how to disable DCE for some properties/functions?

Hi everyone, seems like the

JsObject

class is no longer available in the latest versions of the

kotlinext

in

kotlin-wrappers

, was it renamed or replaced by other class or just removed? @turansky I know you've made a lot of changes to that repo so you might know

Anyone using 1.4-M1 have ideas on how to resolve a

e: java.lang.ClassCastException: org.jetbrains.kotlin.ir.expressions.impl.IrGetObjectValueImpl cannot be cast to org.jetbrains.kotlin.ir.expressions.IrExpressionWithCopy

?

Hi guys 👋 I'm having trouble with the new typescript definition export from Kotlin in 1.4-M1 😓 (1) Adding @ JsExport outside jsMain source directory in multiplatform Gradle project does not work*? So this means that one cannot export type definitions for types that are shared between platform targets? (2) When creating a regular kotlin/js project in IntelliJ, I cannot find a way to activate the new IR back-end compiler and the definition export - I assume this is not supported? Typescript definition export would simplify my current project dramatically, so I keep hoping it would be possible to get at least one of these options working? 🤞 Edit : the IR backend is activated in the gradle.properties file.

Hi everyone! I am new to Kotlin/JS and wanted to explore the framework by writing helper functions (no UI) in Kotlin that could be reused in a separate react JS project. The community seems to have trouble publishing Kotlin libraries as an npm package, So I thought of putting the output of ‘browserDevelopmentWebpack’ in the src/ of React project. Still unable to load the kotlin library using require or ES6 imports. Is there a library target that I should specify for my usecase? Any samples would be appreciated. I am using Kotlin 1.3.72.

Hi, I just started a multiplatform project where "domain" is the common Kotlin code, and I created another Gradle subproject for JS. But the build fails with:

project ':domain' is not configured for JS usage

Any idea what is wrong? For the JVM subproject I already got it working

Hello! Is there prerelease version of kotlinx.html for kotlin-1.4-M1?

A couple of question regarding

js("...")

code block. In pre 1.4 I had this code to determine if I'm running on node or in browser (it's inside an actual implementation of expected method in multi platform project)

val runningOnNode = js(
            "if (typeof window === 'undefined') {\n" +
                    "             true;\n" +
                    "    } else {\n" +
                    "            false;\n" +
                    "    }"
        )

Since switching to 1.4 and enabling IR, that block started returning

undefined

where it was previously a boolean true or false. I worked around this with this:

val runningOnNode = js(
            "var isNode = false;\n" +
                    "if (typeof window === 'undefined') {\n" +
                    "             isNode = true;\n" +
                    "    } else {\n" +
                    "            isNode = false;\n" +
                    "    }\n" +
                    "return isNode;"
        )

So I have two questions, and please consider that my JS knowledge is very limited: 1. Is this expected change that came with 1.4 or is it a bug? 2. Am I using

js(...)

code block in a way that it was not meant to be used, and causing the issue myself?

I'm trying out the new IR JS kotlin compiler. I love it so far, but I'm hitting a big problem. If I try to recompile I get the following error:

> Task :compileKotlinJs FAILED

Deprecated Gradle features were used in this build, making it incompatible with Gradle 7.0.
Use '--warning-mode all' to show the individual deprecation warnings.
See <https://docs.gradle.org/6.1/userguide/command_line_interface.html#sec:command_line_warnings>
5 actionable tasks: 1 executed, 4 up-to-date
e: java.nio.file.FileSystemException: ...\build\classes\kotlin\main\default\ir\bodies.knb: The process cannot access the file because it is being used by another process.

	at java.base/sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:92)
	at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:103)
	at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:108)
	at java.base/sun.nio.fs.WindowsFileSystemProvider.implDelete(WindowsFileSystemProvider.java:274)
	at java.base/sun.nio.fs.AbstractFileSystemProvider.delete(AbstractFileSystemProvider.java:105)

If I force stop the openjdk platform binary process, it works again.

I'm trying to update the libs I'm using to ones that support 1.4-M1 in order to try the new IR compiler, but I'm getting errors like

Could not resolve org.jetbrains:kotlin-react:16.13.0-pre.95-kotlin-1.4-M1

for all of my libs, even though I have included the required maven repositories. The lib exists on the maven server: https://kotlin.bintray.com/kotlin-js-wrappers/org/jetbrains/kotlin-react/16.13.0-pre.95-kotlin-1.4-M1/ I'm including my full

build.gradle.kts

file. What am I doing wrong?

We are in the process of moving away from the frontend plugin to the new JS plugin. Everything works fine for a while, but then compiles in IntelliJ starts failing with the stacktrace below. The error and the warnings about invalid Kotlin Javascript libraries goes away for a while if the .idea folder is deleted and IntelliJ restarted. However, after some time it reappears. Has anyone had a similar problem, and know of a way to solve it?

InformationK kotlinc-js 1.4-M1 (JRE 1.8.0_232-b09)

Information:19/05/2020 16.15 - Build completed with 1 error and 28 warnings in 10 s 86 ms

ErrorK [Internal Error] java.io.IOException: Failed to open zip file: C:\Work\hltv\build\js\node_modules\jquery\dist\jquery.js

at org.jetbrains.kotlin.utils.JsLibraryUtils.traverseArchive(JsLibraryUtils.kt:118)

at org.jetbrains.kotlin.utils.JsLibraryUtils.copyJsFilesFromZip(JsLibraryUtils.kt:102)

at org.jetbrains.kotlin.utils.JsLibraryUtils.copyJsFilesFromLibraries(JsLibraryUtils.kt:43)

at org.jetbrains.kotlin.jps.targets.KotlinJsModuleBuildTarget.copyJsLibraryFilesIfNeeded(KotlinJsModuleBuildTarget.kt:127)

at org.jetbrains.kotlin.jps.targets.KotlinJsModuleBuildTarget.doAfterBuild(KotlinJsModuleBuildTarget.kt:121)

at org.jetbrains.kotlin.jps.build.KotlinBuilder.doBuild(KotlinBuilder.kt:457)

at org.jetbrains.kotlin.jps.build.KotlinBuilder.build(KotlinBuilder.kt:309)

at org.jetbrains.jps.incremental.IncProjectBuilder.runModuleLevelBuilders(IncProjectBuilder.java:1414)

at org.jetbrains.jps.incremental.IncProjectBuilder.runBuildersForChunk(IncProjectBuilder.java:1092)

at org.jetbrains.jps.incremental.IncProjectBuilder.buildTargetsChunk(IncProjectBuilder.java:1159)

at org.jetbrains.jps.incremental.IncProjectBuilder.buildChunkIfAffected(IncProjectBuilder.java:1053)

at org.jetbrains.jps.incremental.IncProjectBuilder.buildChunks(IncProjectBuilder.java:882)

at org.jetbrains.jps.incremental.IncProjectBuilder.runBuild(IncProjectBuilder.java:449)

at org.jetbrains.jps.incremental.IncProjectBuilder.build(IncProjectBuilder.java:190)

at org.jetbrains.jps.cmdline.BuildRunner.runBuild(BuildRunner.java:138)

at org.jetbrains.jps.cmdline.BuildSession.runBuild(BuildSession.java:297)

at org.jetbrains.jps.cmdline.BuildSession.run(BuildSession.java:130)

at org.jetbrains.jps.cmdline.BuildMain$MyMessageHandler.lambda$channelRead0$0(BuildMain.java:218)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)

at java.lang.Thread.run(Thread.java:748)

Caused by: java.util.zip.ZipException: error in opening zip file

at java.util.zip.ZipFile.open(Native Method)

at java.util.zip.ZipFile.<init>(ZipFile.java:225)

at java.util.zip.ZipFile.<init>(ZipFile.java:155)

at java.util.zip.ZipFile.<init>(ZipFile.java:126)

at org.jetbrains.kotlin.utils.JsLibraryUtils.traverseArchive(JsLibraryUtils.kt:116)

... 20 more

WarningK 'C:/Work/hltv/build/js/node_modules/jquery/dist/jquery.js' is not a valid Kotlin Javascript library

WarningK 'C:/Work/hltv/build/js/node_modules/moment-timezone/index.js' is not a valid Kotlin Javascript library

WarningK 'C:/Work/hltv/build/js/node_modules/moment/moment.js' is not a valid Kotlin Javascript library

WarningK 'C:/Work/hltv/build/js/node_modules/react-sortable-hoc/dist/react-sortable-hoc.js' is not a valid Kotlin Javascript library

WarningK 'C:/Work/hltv/build/js/node_modules/regenerator-runtime/runtime.js' is not a valid Kotlin Javascript library

We are migrating one of our mobile codebase (already in production) to kotlin 1.4M to support Typescript and provide a JS implementation. However we have some issues regarding the new IR backend and @JSExport. Here are some questions: Is there a way for @JsExport to export transitive dependencies ? The following code produce an error:

@JsExport
data class A(val b: String) {
    companion object
}

e: java.lang.AssertionError: Properties without fields are not supported A.Companion_instance

Also, when using the 

@JsExport

 annotation on an 

object

, example:

@JsExport
object A {
  var b: String = ""
}

The following TypeScript definition is generated:

/* ErrorDeclaration: Class A with kind: OBJECT */

Is there any workaround for this? Is there any plan to support those types?

Hey guys, I'm trying to configure kotlin-multiplatform so that it uses similar configuration as CRKA. So far I've found out that kotlin-gradle-plugin will extend webpack configuration with whatever it finds in root/webpack.config.d folder. The same story with Karma, if you create karma.config.d folder gradle pluging will enhance existing preset configuration with whatever it finds there. Is there any way to enhance package.jason? I'd like to add 'browserslist' there.

Is there a way to cast Job to Promise, since some JS functions require returning/passing a Promise?

Hi everyone, I'm having an issue trying to update a text field value using the React Wrapper, what I want to do works on JS but I can't make it work on Kotlin/JS, if anyone can give me a hand it'd be greatly appreciated as I've been hitting a wall for several hours 😕 The details of the problem are on this issue: https://github.com/JetBrains/kotlin-wrappers/issues/298

Hi guys, is there a built-in way to access whether I’m in production or dev from Kotlin/JS code running in the browser?

Hello, Using the latest version of Kotlin-Wrapper for React, I am trying to use

useContext

but I am facing this error

When accessing module declarations from UMD, they must be marked by both @JsModule and @JsNonModule

Have you already encountered this issue?

Trying out kotlinx.html -- How does one unit test things that use this? Both with browser test (mocha) and nodejs test with jsdom I get:

ReferenceError: HTMLLegendElement is not defined
    at D:\Projects\acornui2\build\js\packages_imported\kotlinx-html-js\0.7.1\kotlinx-html-js.js:66:29

Also, is there a version that uses es5?

I'm developing a Project with Node and it is failing build with Gradle when i configure with JDK more higher than 10. Dont show any error but not generate outputFile and other gradle tasks fail. Any limits on the version of the JDK in Kotlin/JS or node?

plugins {
        id("org.jetbrains.kotlin.js") version "1.4-M1"
}

repositories {
    maven("<https://dl.bintray.com/kotlin/kotlin-eap>")
    jcenter()
    mavenCentral()
}

dependencies {
    implementation(kotlin("stdlib-js"))
}

kotlin.target {
    useCommonJs()
    nodejs()
}
tasks.compileKotlinJs {
        kotlinOptions.outputFile = "routes/node/index2.js"
        kotlinOptions.metaInfo = false
}

My Enviroment: - Gradle: 6.4.1 (compatible with JDK 14) - IDEA last eap. (With previus versions the same) - Kotlin 1.4-M1(I tried with old versions)

Hi, i am getting this issues

An exception occurred applying plugin request [id: 'java']

> Failed to apply plugin [id 'org.gradle.java']

> Cannot add task 'processResources' as a task with that name already exists.

while i am creating new kotlin/js project . I am using intellij idea ultimate 2020.1 with jdk 8 and here is my gradle file

useCommonJs() is marked as an unresolved reference when I try to use it to compile js in kotlin multiplatform 1.4-M1.

js {
    useCommonJs()
    produceExecutable()
    browser {}
}

Is there a way to compile typescript declarations in commonJs format in kotlin multiplatform 1.4-M1?

I am just trying to do a simple proof of concept to create a javascript library from a kotlin MP project. Creating a new MP project and building produces a build/distributions/MyProject.js file, I copy and include this in an html <script> and able to do console.log(MyProject) but not sure if its working or how to use it beyond that. I tried the things suggested like "@JsName" or including the package name. For example the default project it creates has a class "Sample" and object "Platform" with package "sample". In Javascript things like MyProject.sample or .Sample or .Platform are all undefined. Inspecting the object does not appear to have anything I recognize either. Using MP 1.3.72 if that matters.