Compile JavaScript on Gradle

build.gradle

archivesBaseName = 'hoge'
version = '0.0.0-snapshot'

import com.google.javascript.jscomp.ant.CompileTask

buildscript {
  repositories {
    mavenCentral()
  }
  dependencies {
    classpath 'com.google.javascript:closure-compiler:rr2079.1'
  }
}

task clean << {
  ant.delete(dir: buildDir)
}

/**
 * Compile JavaScript
 * @see http://code.google.com/p/closure-compiler/source/browse/trunk/src/com/google/javascript/jscomp/ant/CompileTask.java
 */
task compile << {
  def jscomp = new CompileTask()
  jscomp.output = file("${buildDir}/${name}/${archivesBaseName}-${version}.min.js")
  jscomp.addSources(ant.filelist(dir: "src/main/js", files: "${archivesBaseName}.js"))
  jscomp.execute()
}