Gradle doesn't emit kotlin.js - gradle

Question

I'm trying to compile my Kotlin app and set of Kotlin libraries to JavaScript. I've got that working well, but when I try to run it it can't find kotlin.js.
So what's going on here? When I compile using IDEA (instead of Gradle), it outputs kotlin.js just fine. I tried making my build script more like an example I found, but that wouldn't compile...
Here's a link to the code and project in question: https://github.com/BlueHuskyStudios/Decision-Cruncher/blob/SO/q/53582651/1/build.gradle

Answer 1

This only worked for me. unzip for some reason was no working
task assembleWeb() {
configurations.implementation.setCanBeResolved(true)
configurations.implementation.each { File file ->
if (file.path.indexOf('kotlin-stdlib-js') >= 0) {
exec {
workingDir "$projectDir/web"
standardOutput = new ByteArrayOutputStream()
commandLine "7z", "e", file.absolutePath, "kotlin.js", "-aos", "-r"
}
}
}
dependsOn classes
}
assemble.dependsOn assembleWeb
Be aware of "-aos" param. This flag will prevent from overwriting of existing file

Answer 2

Here you can find the code snippet to extract all .js files from Kotlin/JS libraries:
task assembleWeb(type: Sync) {
configurations.compile.each { File file ->
from(zipTree(file.absolutePath), {
includeEmptyDirs = false
include { fileTreeElement ->
def path = fileTreeElement.path
path.endsWith(".js") && (path.startsWith("META-INF/resources/") ||
!path.startsWith("META-INF/"))
}
})
}
from compileKotlin2Js.destinationDir
into "${projectDir}/web"
dependsOn classes
}
assemble.dependsOn assembleWeb

Answer 3

For any others struggling in the future, I've had the following issue:
IntelliJ Kotlin/JS starter project has been generated with this in the gradle file:
implementation "org.jetbrains.kotlin:kotlin-stdlib-js"
which needs to be this to get the kotlin.js file
compile "org.jetbrains.kotlin:kotlin-stdlib-js"