Does Kotlin `1.8` no longer generate `.d.ts` files or is there a configuration I’m missing? When on ...

# javascript

[shama]

Does Kotlin 1.8 no longer generate .d.ts files or is there a configuration I’m missing? When on Kotlin 1.7.21 they generate in build/developmentLibrary/ but with 1.8 they are no longer there.

[Big Chungus]

It should. Are you using BOTH compiler mode by any chance? I think that dropped a support for dts

[shama]

I’m using IR. I’ll try setting up a new project to be sure it’s not something unique in our project.

[shama]

Yep even with the Full-Stack Web Application wizard, Kotlin 1.7.21 generates a .d.ts and updating to 1.8 it no longer does.

[Big Chungus]

Maybe there's a new flag now that you need to flip explicitly? I assume you already use binaries.library()

[shama]

Yeah checking through the changelog now. I tried with both binaries.library() and binaries.executable() too

[Big Chungus]

Are you running some specific task to get that or just a catch-all "build" task?

[shama]

/gradlew jsBrowserDevelopmentLibraryDistribution

[Big Chungus]

Could be a case of task responsibilities changing maybe? Can you try "gradlew clean build"?

[shama]

I’ve done a clean between each attempt to be sure. It doesn’t generate a .d.ts file in the js/packages/<Project>/kotlin/ anymore either.

[Big Chungus]

I'm also always using useCommonJs()
Might be worth seeing if that changes anything if you don't use it yet

[shama]

Hmm nope doesn’t work with useCommonJs() either on my end. I appreciate the help btw!

[shama]

Just for the repro, I used the Full-Stack Web Application wizard in Intellij then changed binaries.executable() to binaries.library(). Running jsBrowserDevelopmentLibraryDistribution with 1.7.21 creates .d.ts files.

Changing it to kotlin("multiplatform") version "1.8.0" and commenting out the deprecated cssSupport.enabled = true option, it no longer generates .d.ts files.

[Big Chungus]

Booting up my pc to try it out

[Big Chungus]

Aha! Looks like dts are now only generated for productionLibraries (so my initial suggestion to run ./gradlew clean build would've worked for you.

[Big Chungus]

Here's my setup I've just verified with https://github.com/mpetuska/kotlin-sandbox/blob/master/modules/kjs/build.gradle.kts

[Big Chungus]

Also be sure to have at least one @JsExport in your code.

[Big Chungus]

image.png

[shama]

Ah ha, you are amazing! Thank you for figuring that out. I see the .d.ts files now using productionLibraries.

[Big Chungus]

Pro tip, when stuff is suddently missing always run the most expensive/generic task you can think of to check if it was really missing or just moved someplace else

[Big Chungus]

In this case that was build or assemble

[shama]

I appreciate the tip! I’ll keep that in mind next time something goes wrong.

[CLOVIS]

@Big Chungus while you're sharing pro tips, do you know of a way to easily find out which task creates a specific file? My current strategy of "look at the tasks that get executed, then execute each of them in order until the file exists" takes ages 😕

[Big Chungus]

That would be my first instinct as well. To be more efficient you might check gradle scan - I think it list out task inputs and outputs. Alternatively something like this might work

tasks {
  all {
    doFirst {
      println("$(task.name) outputs: $(outputs.files)")
    }
}

[CLOVIS]

Oh, I'll try that, thanks

[Big Chungus]

Let us know if any of the options worked

[willyrs]

I don’t know if I can necropost this, but I have the same problem with kotlin 1.8.20 and I can’t find any d.ts file, not with binaries.executable() and jsBrowserProductionWebpack and neither with binaries.library() and jsBrowserProductionLibraryDistribution

[Big Chungus]

Dts files are only generated for binaries.library()

[Big Chungus]

Also they are skipped if your code has no @JsExport members

[Big Chungus]

Here's your checklist for dts gen:
1. Use IR backend
2. Use binaries.library()
3. Have at least one entity in your code annotated with @JsExport

[willyrs]

thanks! I think they changed the rules again.. It works with kotlin 1.8.0 but not with 1.8.20.. I’m trying with 1.8.10 now

[willyrs]

my results:
kotlin 1.8.0 -> d.ts are generated
kotlin 1.8.10 -> doesn’t build: error An unexpected error occurred: “https://registry.yarnpkg.com/acorn-import-assertions/-/acorn-import-assertions-1.8.10.tgz: Request failed \“404 Not Found\“”.
kotlin 1.8.20 -> it builds but d.ts are not generated

[jeran]

@willyrs or anyone, have you figured this out? I’m on kotlin 1.8.20, nothing i’ve done has gotten d.ts files to generate. using:

js(IR) {
    nodejs()
    binaries.library()
}

worked fine with any 1.7.x versions we used

[Andrey Tabakov]

@jeran add generateTypeScriptDefinitions()

js(IR) {
    generateTypeScriptDefinitions()
    binaries.library()
}

[jeran]

sadly, i am getting this

[Andrey Tabakov]

are you already set kotlin version to 1.8.20? May be you returned it to 1.7.0?

[jeran]

i wondering if it might’ve been introduced in 1.8.21

[jeran]

no, it looks like it should be there… gonna keep digging into it

[jeran]

in case anyone comes across this generateTypeScriptDefinitions() was definitely the answer to my issue. some local transient build issue was causing gradle not to find it, but it is present in 1.8.20