I noticed that sealed classes don't get written out as abstract classes when generating .d.ts files using 1.4-M1. They just get written out as regular classes. I have to remove the sealed modifier and replace it with abstract in Kotlin to get it to generate an abstract class in Typescript. Anyone know if this is deliberate? It'll break all my when-expressions if I can't use sealed classes in my models 😞 I also noticed that my enums didn't survive the translation into .d.ts files. All I see is:

/* ErrorDeclaration: Class my.fully.qualified.enum.class.Name with kind: ENUM_CLASS */

I'm new to TS, but I thought it had enums.

We are having some trouble getting the new kotlinjs plugin to pick up our .yarnrc file. Is it working for anyone else?

is there an example project where backend code and javascript frontend use the same kotlin data classes?

I was curious if this is intentional -- Kotlin JS has a different default for maven publishing than JVM or MPP. In JVM and MPP publications are created automatically if you apply the

maven-publish

plugin, however for JS only projects this isn't the case. It's easy enough to add -

val kotlinSourcesJar by tasks.named("kotlinSourcesJar")    
    publishing {
        publications {
            create<MavenPublication>("default") {
                from(components["kotlin"])
                artifact(kotlinSourcesJar)
            }
        }
    }

However, this isn't really documented and feels inconsistent. This is with 1.4-M1 EAP.

Hello, Is there any plans to share any article about how JetBrains did use Kotlin for Space? I heard it is built with Kotlin. I am interested to know what are the techniques used for such a big product. I was looking at improving the performances using Workers. But currently, it's not easy to generate multiple files with Kotlin (I think it's on the roadmap https://youtrack.jetbrains.com/issue/KT-33826) Kotlinx Coroutines is not supporting workers as well. There is some work done by people using Angular (https://stackoverflow.com/questions/43276044/angular-cli-generated-app-with-web-workers) I supposed it has to be implemented by a framework and not the language?

Hi We're having some issues on our build server when attempting to build a branch using the new js-plugin. During the build, some third party node-module tries to log using node. However, this results in a permission error.

> Task :kotlinNpmInstall
error /var/jenkins_home/Build_pluginupgrades/build/js/node_modules/jss: Command failed.
Exit code: 126
Command: node -e "console.log('\u001b[35m\u001b[1mLove JSS? You can now support us on open collective:\u001b[22m\u001b[39m\n > \u001b[34m<https://opencollective.com/jss/donate>\u001b[0m')"
Arguments: 
Directory: /var/jenkins_home/Build_pluginupgrades/build/js/node_modules/jss
Output:
/bin/sh: 1: node: Permission denied

> Task :kotlinNpmInstall FAILED

When using the plugin, where is node/yarn installed?

Does anyone here know if we are already closer to easy code splitting within KotlinJS? I saw a Discuss Thread where a Jetbrains developer hinted last year March that they are working on it

Has anyone tried the generated typescript definitions yet? I’m going to try it soon with my JS team so was curious if anyone had any experience before I try this next week

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Hi . I’ve created a new project through intellij Idea (New Project -> Gradle -> Kotlin/JS for browser) and get an error from start. What does it mean and how can I solve it?

I'm developing Kotlin/JS Project and I have created new sourceSets but by default makes the type = Multiplataform. How can change KotlinPlatformType in gradle? Gradle code:

val backend by creating{}
val webapp  by creating{}

does anyone have a simple kotlin/js project that is part of a kotlin mp project that has tests written for the js piece?

Hello, Is it possible to set a breakpoint from intellij when using

browserDevelopmentRun

?

Busy playing around with Fritz2 after watching the very impressive VKUG presentation ( ). With a new Kotlin JS project I discovered that the continuous deployment feature breaks when adding a new Kotlin JS library/framework (eg

implementation("io.fritz2:fritz2-core-js:0.4")

):

Error: ENOENT: no such file or directory, open '/home/napperley/idea_projects/kotlinjs-test/build/js/packages/kotlinjs-test/kotlin/kotlinjs-test.js'

A bit annoying since it means the web page has to be manually refreshed in a web browser (eg Brave) every time code changes are made. Wondering if the continuous deployment feature can't handle pure Kotlin JS libraries/frameworks which don't rely on NPM ( https://github.com/jwstegemann/fritz2 ) 😆 .

Anyone know where I can find the elusive JS file that is generated. The JS file doesn't seem to exist anywhere in the project directory, yet when the file is referenced in index.html the JS file is mysteriously found when running the run Gradle task.

Hi, is it possible to use rxjava in kotlin multiplatform?

I'm testing Koa.js in my Project Kotlin/JS but i cant make equivalent in kotlin for

async

and

await

from middleware of koa. Koa router:

const router = require('koa-router')()

router.get('/', async (ctx, next) => {
  await ctx.render('index', {
    title: 'Hello Koa 2!'
  })
})

I tried with js() function and coroutines but cant make it work. Any hint or confirm if avaible in kotlin/JS?

Does kotlinx.serialization support the new JS IR compiler? @Grantas33 is saying that the class names that the IR compiler generates (that have

_

prefixes), aren’t properly serialized by kotlinx.serialization. @sandwwraith ^^

So I created a js project to test out the typescript definitions generated using 1.4-M2. It sounds like from the blog post that

produceExecutable()

is required to get the

.d.ts

files to generate, but I can’t find how to call

produceExecutable()

from the multiplatform plugin. Am I missing it? How would I get this to work?

Hello, any progress in the discussion with this issue (lazy import) https://youtrack.jetbrains.com/issue/KT-20679

With inline classes being supported in the new IR for JS, is there a possibility for inline enum classes to be prioritized? https://youtrack.jetbrains.com/issue/KT-23823 TS “enums” are usually typed as unions (

type MyEnum = "a" | "b" | "c"

). Having

inline enum class

support (especially with generates TS definitions) would help greatly with calling Kotlin/JS code from Typescript. EDIT: it looks like there are a few other ways to represent Enums in TS: • enum (

enum MyEnum2 { A = "a", B = "b", C = "c")

) • const enum (

const enum MyEnum2 { A = "a", B = "b", C = "c")

) I want proper mapping between Kotlin/TS enums -- inline classes and/or union types are just one way I see to get that

I update to last version

Kotlin 1.4-M2

and cant call to ':compileKotlinJs' tasks directly, Gradle module have tasks but not found in build.gradle.

//Fail Call :compileKotlinJs tasks
tasks.compileKotlinJs{
        kotlinOptions.outputFile = "${projectDir}/routes/node/index2.js"
        kotlinOptions.metaInfo = false
        kotlinOptions.moduleKind = "commonjs"
}

//Work call to :compileKotlinJs
tasks {
    "compileKotlinJs"(org.jetbrains.kotlin.gradle.tasks.Kotlin2JsCompile::class) {
        kotlinOptions.outputFile = "${projectDir}/routes/node/index2.js"
        kotlinOptions.metaInfo = false
        kotlinOptions.moduleKind = "commonjs"
    }
}

Any idea because dont work

tasks.compileKotlinJs

If exists in Gradle module?

I’ve been playing around with exporting typescript definitions for a JS library using 1.4-M2. I handed the generated typescript definition over to someone on my JS team, but he told me it wouldn’t work because the typescript definition doesn’t have any export statements in the typescript definition. This would be a fairly major bug in typescript definition generation, so it seems unlikely and that my team is missing something, but other typescript definitions I look at all export what’s usable. Can anyone confirm if this is a bug? @Svyatoslav Kuzmich [JB] ^^

Is there somewhere an example of multi-module project with new gradle plugin? I'm trying to migrate from kotlin-frontend-plugin and can't get everything done.

It appears as though the chart.js module isn't being installed via npm (

npm("chart.js")

). How do I get chart.js installed as a library? Is there a separate Gradle task that needs to be executed?

Hey guys, using kotlin 1.3.70, i Had some trouble with hot reloading and after some search i found this https://discuss.kotlinlang.org/t/kotlin-js-incremental-compilation/11380 and it made everything work... Which is strange because i read the linked ticket to be done Long time ago. Does anyone else have problems with hot reloading?

Does Kotlin JS have a website similar to Definitely Typed (aka Kotlinly Typed) where Kotlin definitions for JS libraries/frameworks are hosted?

[solved] I upgraded my webapp Project to Kotlin 1.4-M2 and cant find

create

variable in

stdlib-js

lib.

import kotlin.browser.document

document.create.div(classes = "chatWindow") {}

Any equivalent in 1.4-M2 ?

can i configure the run task to open chrome instead of safari on macOS?