build.gradle

buildscript {
    ext.kotlin_version = '1.2.51'
    repositories {
        jcenter()
        maven {
            url "https://dl.bintray.com/kotlin/kotlin-eap"
        }
    }
    dependencies {
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

// apply kotlin2js
apply plugin: 'kotlin2js'


repositories {
    mavenCentral()
    jcenter()
}

dependencies {
    compile "org.jetbrains.kotlinx:kotlinx-html-js:0.6.11"
    compile "org.jetbrains.kotlin:kotlin-stdlib-js:$kotlin_version"
    testCompile "org.jetbrains.kotlin:kotlin-test-js:$kotlin_version"
}

// configure kotlin compiler
compileKotlin2Js {
    //kotlinOptions.metaInfo = true
    kotlinOptions.outputFile = "web/${project.name}.js"
    //"$project.buildDir.path/js/${project.name}.js"
    kotlinOptions.sourceMap = true
    //kotlinOptions.moduleKind = 'commonjs'
    //kotlinOptions.main = "main"
}