# gradle-scala-application-howto (opens new window)

Because I don't know sbt...

./gradlew clean test npm_i npm_run_build

gradle init
gradle fatJar
gradle tests output
gradle npm integration
publish project to GitHub
GitHub actions

# gradle init

initialize new scala project:

mkdir gradle-scala-application-howto
cd gradle-scala-application-howto/
gradle init --type scala-library --package com.github.daggerok --project-name gradle-scala-application-howto --dsl kotlin

# gradle fatJar

add to build.gradle.kts file fatJar task definition:

tasks {
    register<Jar>("fatJar") {
        archiveClassifier.set("all")
        duplicatesStrategy = DuplicatesStrategy.EXCLUDE
        manifest {
            attributes("Main-Class" to "com.github.daggerok.Main")
        }
        from(configurations.runtimeClasspath.get()
                .onEach { println("add from dependencies: ${it.name}") }
                .map { if (it.isDirectory) it else zipTree(it) })
        val sourcesMain = sourceSets.main.get()
        sourcesMain.allSource.forEach { println("add from sources: ${it.name}") }
        from(sourcesMain.output)
    }
}

then build and run, like so:

./gradlew clean fatJar
java -jar build/libs/*-all.jar

# gradle tests output

add to build.gradle.kts file these lines for better developer experience on tests execution:

import org.gradle.api.tasks.testing.logging.TestLogEvent.*

tasks {
    withType<Test> {
        testLogging {
            showExceptions = true
            showStandardStreams = true
            events(PASSED, SKIPPED, FAILED)
        }
    }
}

# gradle npm integration

add to build.gradle.kts file these lines for better developer experience on tests execution:

plugins {
    // Add Gradle NodeJS support
    id("com.moowork.node") version "1.3.1"
}

node {
    download = true
}

prepare everything together with npm scrips and use gradle instead:

./gradlew npm_i         # npm i
./gradlew npm_run build # npm run build

# publish project to GitHub

create .gitignore file:

.idea/
*.iml
*.ipr
*.iws
*.log*
.gradle/
build/
/out/
.DS_Store
node_modules/
.vuepress/dist/

# GitHub actions

just see .github/workflows/ci.yaml file (opens new window) as a the reference...