3 files changed, 106 insertions, 0 deletions
diff --git a/plugins/scalajs/ScalaJsBuild.scala b/plugins/scalajs/ScalaJsBuild.scala
new file mode 100644
index 0000000..9374f66
--- /dev/null
+++ b/plugins/scalajs/ScalaJsBuild.scala
@@ -0,0 +1,52 @@
+package cbt
+import java.io.File
+import java.net.URL
+
+trait ScalaJsBuild extends BaseBuild {
+  final protected val scalaJsLib = ScalaJsLib(
+    scalaJsVersion,
+    scalaVersion,
+    context.cbtHasChanged,
+    context.classLoaderCache,
+    context.paths.mavenCache
+  )
+  import scalaJsLib.{link => _,_}
+
+  def scalaJsVersion = "0.6.8"
+  final protected val scalaJsMajorVersion: String = lib.libMajorVersion(scalaJsVersion)
+  final protected val artifactIdSuffix = s"_sjs$scalaJsMajorVersion"
+
+  override def dependencies = super.dependencies :+ scalaJsLibraryDependency
+  override def scalacOptions = super.scalacOptions ++ scalaJsLib.scalacOptions
+
+  /** Note: We make same assumption about scala version.
+      In order to be able to choose different scala version, one has to use %. */
+  implicit class ScalaJsDependencyBuilder(groupId: String){
+    def %%%(artifactId: String) = new DependencyBuilder2(
+      groupId, artifactId + artifactIdSuffix, Some(scalaMajorVersion))
+  }
+  
+  private def link(mode: ScalaJsOutputMode, outputPath: File) = scalaJsLib.link(
+    mode, outputPath, scalaJsOptions,
+    target +: dependencies.collect{case d: BoundMavenDependency => d.jar}
+  )
+
+  def scalaJsOptions: Seq[String] = Seq()
+  def scalaJsOptionsFastOpt: Seq[String] = scalaJsOptions
+  def scalaJsOptionsFullOpt: Seq[String] = scalaJsOptions
+
+  private def output(mode: ScalaJsOutputMode) = target ++ s"/$projectName-${mode.fileSuffix}.js"
+  protected def fastOptJSFile: File = output(FastOptJS)
+  protected def fullOptJSFile: File = output(FullOptJS)
+
+  def fastOptJS = {
+    compile
+    link(FastOptJS, fastOptJSFile)
+    fastOptJSFile
+  }
+  def fullOptJS = {
+    compile
+    link(FullOptJS, fullOptJSFile)
+    fullOptJSFile
+  }
+}
diff --git a/plugins/scalajs/ScalaJsLib.scala b/plugins/scalajs/ScalaJsLib.scala
new file mode 100644
index 0000000..0355850
--- /dev/null
+++ b/plugins/scalajs/ScalaJsLib.scala
@@ -0,0 +1,51 @@
+package cbt
+import java.io.File
+
+case class ScalaJsLib(
+  scalaJsVersion: String, scalaVersion: String,
+  cbtHasChanged: Boolean, classLoaderCache: ClassLoaderCache, mavenCache: File
+)(implicit logger: Logger){
+  sealed trait ScalaJsOutputMode {
+    def option: String
+    def fileSuffix: String
+  }
+  case object FastOptJS extends ScalaJsOutputMode{
+    override val option = "--fastOpt"
+    override val fileSuffix = "fastopt"
+  }
+  case object FullOptJS extends ScalaJsOutputMode{
+    override val option = "--fullOpt"
+    override val fileSuffix = "fullopt"
+  }
+
+  val lib = new Lib(logger)
+  def dep(artifactId: String) = MavenResolver( cbtHasChanged, mavenCache, mavenCentral ).bindOne(
+    MavenDependency("org.scala-js", artifactId, scalaJsVersion)
+  )
+
+  def link(
+    mode: ScalaJsOutputMode, outputPath: File,
+    scalaJsOptions: Seq[String], entriesToLink: Seq[File]
+  ) = {
+    val scalaJsCliDep = dep( "scalajs-cli_"++lib.libMajorVersion(scalaVersion) )
+    lib.runMain(
+      "org.scalajs.cli.Scalajsld",
+      Seq(
+        mode.option,
+        "--sourceMap",
+        "--stdlib", s"${scalaJsLibraryDependency.jar.getAbsolutePath}",
+        "--output", outputPath.string
+      ) ++ scalaJsOptions ++ entriesToLink.map(_.getAbsolutePath),
+      scalaJsCliDep.classLoader(classLoaderCache)
+    )
+  }
+
+  val scalaJsLibraryDependency = dep( "scalajs-library_"++lib.libMajorVersion(scalaVersion) )
+
+  // Has to be full Scala version because the compiler is incompatible between versions
+  val scalaJsCompilerDependency = dep( "scalajs-compiler_"++scalaVersion )  
+  val scalacOptions = Seq(
+    "-Xplugin:" ++ scalaJsCompilerDependency.jar.string,
+    "-Xplugin-require:scalajs"
+  )
+}
diff --git a/plugins/scalajs/build/build.scala b/plugins/scalajs/build/build.scala
new file mode 100644
index 0000000..0205cf8
--- /dev/null
+++ b/plugins/scalajs/build/build.scala
@@ -0,0 +1,3 @@
+import cbt._
+
+class Build(val context: Context) extends Plugin