Could someone help me about doing this in kotlin? https://reactjs.org/docs/code-splitting.html

mmm it was nice to depend my backend jvm on the frontend js, why this doesn't work anymore in kotlin 1.3.0?

hey everyone - new at kotlin javascript... trying to use ktor http client and I am getting this error. I can see in my web directory I have ktor-client-js.js

Question: I'm looking at Kotlin's delegated properties docs and it shows an example where you can delegate to values in a

Map

. Can this also work with

Json

in Kotlin/JS? https://kotlinlang.org/docs/reference/delegated-properties.html#storing-properties-in-a-map

If so, is it be possible to write a data class with multiple constructors: one from

Json

, and another using the properties explicitly as parameters?

Hi guys, sorry for the noob question but I'm getting mad... Anyone know how to change the output directory of the generated javascript code? Right now I'm getting the compiled code at myproject/node, I'd like to get it at for example myproject/anothername

Using variables that are declared after the init function, leads to 'undefined' results in the Javascript target. Shouldn't we expect the same behaviour as the JVM backend?

Apologies if this isn't the right place to ask such questions, but does anyone know what the release schedule is for the kotlin-wrappers projects? In particular, I'm looking for a version of kotlin-redux with support for Kotlin 1.3.0, committed 22 days ago, but doesn't appear to have been released to npmjs.org yet. https://github.com/JetBrains/kotlin-wrappers/tree/master/kotlin-redux

This message was deleted.

I'm missing something here -- I have a ByteArray and I want to convert it to a ArrayBuffer or an ArrayBufferView. The ByteArray is coming back from protobufjs and the ArrayBuffer/View is what a websocket.send(...) method requires. hmmmm

i'm looking to try out kotlin-js, so I looked around for tutorials online and I came across both

kotlin-frontend-plugin

and

create-react-kotlin-app

. They are both by jetbrains and appear to be actively developed but dont seem to be related. If I want to start with a (fairly) simple browser-only app should I use one of these 2 options? Or something else?

is it possible to use the

import()

function for dynamic imports? https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/import#Dynamic_Imports

Does anyone have any recommendations for a KotlinJS framework for writing a progressive web app? I write Angular code every day, but for a sideproject, I don’t want to write any more Typescript/Javascript if I can help it. I’ve seen react and kotlin play nice together, but I haven’t really used react (beside a typical hello world). My goal is to create a simple browser based app with no backend and it will store data in localstorage.

Somebody knows "kotlin-frontend-plugin" development plans? https://github.com/Kotlin/kotlin-frontend-plugin It does not work with gradle wrapper 5.0 (I may try to fix this bug) Maybe there is an alternative way to minify JS code? Or will the "kotlin-multiplatform" plugin be able to replace it?

📣 📣 📣 Hi, all! Please share your experience with using incremental compilation for Kotlin/JS. In the case you have missed it, you can find more information here https://blog.jetbrains.com/kotlin/2018/09/kotlin-1-2-70-is-out/ It’s even better with 1.3.10 and later. And the small poll about it: Do you use Incremental Compilation for Kotlin/JS? 👌 🚫 🐛 — doesn’t work to me ❓— I don’t know about such possibility

Are we ever going to see Kotlin-js have an option to generate typescript definition files? It would make it much easier to sell using kotlin to generate models, and endpoints to be shared with web and mobile.

Can Kotlin JS understand typescript definition files exported by libraries?

there's a ts2kt tool. don't know how well it works

Hi, I am new to js world. In Kotlin Js, how can I read a 'resource' txt file? My guess is it has something to do with using

require

and some module system. Any tutorials or examples on the topic would be appreciated.

Any update to sorting stability in the standard lib? https://youtrack.jetbrains.com/issue/KT-12473 Hoping to avoid bundling my own merge-sort implementation if possible, but it looks like that ticket hasn't seen any movement in a while...

Hello. I tried Kotlin/JS yesterday, but I met some problems and I couldn't fix it. When I created a sealed class like this

package test

sealed class Test {
    object Inner: Test()
}

and I transpiled it with jetbrains/kotlin-webpack-plugin, then I could get this code.

(function (_, Kotlin) {
  'use strict';
  var Kind_OBJECT = Kotlin.Kind.OBJECT;
  var Kind_CLASS = Kotlin.Kind.CLASS;
  Test$Inner.prototype = Object.create(Test.prototype);
  Test$Inner.prototype.constructor = Test$Inner;
  function Test() {
  }
  function Test$Inner() {
    Test$Inner_instance = this;
    Test.call(this);
  }
  Test$Inner.$metadata$ = {
    kind: Kind_OBJECT,
    simpleName: 'Inner',
    interfaces: [Test]
  };
  var Test$Inner_instance = null;
  function Test$Inner_getInstance() {
    if (Test$Inner_instance === null) {
      new Test$Inner();
    }
    return Test$Inner_instance;
  }
  Test.$metadata$ = {
    kind: Kind_CLASS,
    simpleName: 'Test',
    interfaces: []
  };
  Object.defineProperty(Test, 'Inner', {
    get: Test$Inner_getInstance
  });
  var package$test = _.test || (_.test = {});
  package$test.Test = Test;
  Kotlin.defineModule('english', _);
  return _;
}(module.exports, require('kotlin')));

When I use that from another js file with

import { test } from './test'

then I got an error.

Uncaught TypeError: Cannot read property 'test' of undefined

It is not occurred when I didn't use sealed class. Is this problem because of my code?

for those who dare I would love to hear your thoughts on a web app library I built out inspired by Elm https://github.com/talon/nimble

or does my usecase simply do not make sense? that is generate a library useable by our frontend developers which themselves use ts

no. and there is an issue for this

Is there a way in which kotlin-js can export typescript definitions?

In an mpp, I have a function annotated with

@JvmOverloads

, usable from java both with and without its single String parameter. I can't make it work in js. The

hello

function in the example here: https://kotlinlang.org/docs/reference/js-to-kotlin-interop.html#jsname-annotation doesn't have

greeting

as an optional parameter. So are optional parameters not possible for a js target (without using the

external

modifier and actually writing the js yourself)?

Do someone have an up to date example how to use kotlinjs + react + webpack?

I get at best a listing of files and folders when I call the url webpack is giving me

I just make a PR of such example. It is basically copy-paste from my own project, which works better than I am expected: https://github.com/JetBrains/kotlin-wrappers/pull/98/files