kotlin-wrappers VS Elm

If you want something more standard, I'd look at Kotlin Wrappers and look at examples of using react - https://github.com/JetBrains/kotlin-wrappers

Kotlin wrappers for JS.

Looking at the source code, yes there is: use suffix of pct: (-50).pct

Yes! Interesting that it isn't defined in the Length.kt file (that's where I was looking for it) and is instead in its lonesome, but I guess it makes sense as it's not actually a length value. Thanks for the help!

plugins { kotlin("js") id("com.github.node-gradle.node") version "3.4.0" } kotlin { js(IR) { // let's rename it to more reusable as under that name we will access it in our boilerplate code moduleName = "stories" // browser also works fine here, we just need it for compiling purposes as of now nodejs {} // add a startup script to our package json compilations["main"].packageJson { customField( "scripts", mapOf("storybook" to "start-storybook -p 6006 -c $projectDir/.storybook --ci") ) } binaries.executable() } } tasks.named("build") { dependsOn("assemble") dependsOn("copyJsStories") } tasks.register("copyJsStories") { dependsOn("developmentExecutableCompileSync") from("$projectDir/src/main/js") into("$buildDir/compileSync/main/developmentExecutable/kotlin") // flatten all files to appear on one level eachFile { if (isDirectory) { exclude() } path = path.replace("/", ".") } } tasks.register("copyPackageJson") { dependsOn("build") from("$buildDir/tmp/publicPackageJson/package.json") into("$projectDir") } tasks.register("start") { dependsOn("build") dependsOn("npmInstall") args.addAll("run", "storybook") } tasks.named("npmInstall") { dependsOn("copyPackageJson") workingDir.set(file("$projectDir")) inputs.file("package.json") } dependencies { // dependency to the project with components implementation(project(":app")) // react dependencies to put on package.json explicitly // can resolve the actual versions on https://github.com/JetBrains/kotlin-wrappers implementation(npm("react", "^17.0.2")) implementation(npm("react-dom", "^17.0.2")) implementation(npm("react-router-dom", "^6.2.2")) // storybook specific dependencies implementation(npm("@storybook/builder-webpack5", "^6.5.9")) implementation(npm("@storybook/manager-webpack5", "^6.5.9")) implementation(npm("@storybook/node-logger", "^6.5.9")) implementation(npm("@storybook/preset-create-react-app", "^4.1.2")) implementation(npm("@storybook/react", "^6.5.9")) }

From my experience if you're truly trying to interop with JavaScript code that is already out there on npm, you better hope there is a library that already wraps it like kotlin wrappers. Otherwise you would have to write a wrapper library yourself or use dukat to convert typescript definitions to kotlin (which I have never had the best luck converting but maybe it got better?).

It's still pretty finnicky to configure and it hasn't emerged from alpha yet, so its future isn't exactly secure, but I'm hopeful as they appear to be investing a lot of resources into it and adjacent projects, e.g. the kotlin-react library.

We already have a battle-tested integration with react (it's used inside jetbrains.space) -- https://github.com/JetBrains/kotlin-wrappers And, take a look at docs and hands-on.

You can use kotlin-wrappers to write React applications or one of the Kotlin/JS frameworks.

useState part of React Hooks for state management is something that even Javascript and Typescript engineers struggle with from time to time. We are going to reduce this struggle within the React ecosystem using KotlinJS and the ever incredible Kotlin-React library.

Elm [1] is based on a similar idea. Build your app from pure functions that return HTML tags.

[1] https://elm-lang.org/

elm is a lovely lang. it would be nice to have modern APIs on it.

here's the project for new eyes:

https://github.com/elm/core

https://elm-lang.org/

You also wouldn't really be creating your own new programing language. You would be creating something that can run JavaScript by following JavaScript standards and syntax. You might be able to add some non-standard features of your own on top of those standards, or include your own standard library of helpers or utilities, but you can't completely make a new or alternative language and then load it in the browser (or at least not by reimplementing ECMAScript standards... you actually can make your own language that runs within any Javascript enviroment, if you provide an interpreter or compiler that transforms it into valid JS. Some people have done something like this, eg Elm: https://elm-lang.org/).

I get it. However, the whole point of using Unions to narrow your types, ensure only a set of possible scenarios can occur, and only access data of a particular union when it’s safe to do so. That’s some of what pattern matching can provide, and 100% of what using switch statements in TypeScript with their Discriminated Unions can provide. Yes, it’s not 100% exhaustive, but TypeScript is not soundly typed, and even Elm which is still has the same issue TypeScript does: You’re running in JavaScript where anything is possible. So it’s good enough to build with and much better than what you had.

The beauty of a language like Elm (and other lambda-calculus / functional programming inspired languages) is that there's very little transformation involved in going from an idea to code. And that seems to have a big impact on getting things done.

I think the most fun and approachable way for beginners to build games with functional programming is with Elm [1].

See a few (small, demo) games built by the community in [2] .

Notice Elm has abandoned the FRP approach in favor of Model-View-Update [3].

[1] https://elm-lang.org/