Trying to convert the karma block (https://github.com/JetBrains/kotlin-examples/blob/48122d114162dc62c1ac45694aa515e36adefdbc/gradle/js-tests/karma/build.gradle#L35) from a Kotlin JS test example project to Kotlin DSL but end up with a error message saying that the karma task is not found.

Have you tried to specify the task class? Something like below.

import org.jetbrains.kotlin.gradle.frontend.karma.KarmaExtension

configure<KarmaExtension> {
     frameworks = listOf("")
}

Note: I didn't tested it!

All tasks for the Karma plugin are defined in this file: https://github.com/craigburke/karma-gradle/blob/master/src/main/groovy/com/craigburke/gradle/KarmaPlugin.groovy . No karma task is defined in the file.

Ah, ok. So instead of

KarmaExtension

it's

KarmaModuleExtension

.

import com.craigburke.gradle.KarmaModuleExtension

configure<KarmaModuleExtension> {
}

Managed to get further and it appears as though there is a issue with one of the Node modules (log4js):

> Task :js:karmaRun FAILED
/home/napperley/idea_projects/webscene/webscene-core/js/node_modules/karma/node_modules/log4js/lib/layouts.js:69
  ) + util.format(...loggingEvent.data);
                  ^^^

SyntaxError: Unexpected token ...

😱 All Gradle issues seem to be resolved with the Karma plugin.

Did you fixed the spread operator error? Maybe it's the Node.js version.

No explicit versions are specified which might explain why the syntax error occurs.

Applying the Node.js Gradle plugin and setting the Node.js version makes the error gone, but the tests failed. Can you try the code below, please?

import com.moowork.gradle.node.NodeExtension

apply(plugin = "com.moowork.node")


configure<NodeExtension> {
    version = "10.0.0"
}

Configuring the Node plugin via the NodeExtension works.