Bridging Scala and Javascript in Java 8

gistfile1.scala

import javax.script.{Compilable, Invocable, ScriptEngineManager}

import scala.beans.BeanProperty

case class Pessoa(@BeanProperty var name: String,
                  @BeanProperty var age: Double)

trait CenasExtractor {
  def processRow(row: String, age: Double): Pessoa
}

object Main extends App {
  val manager = new ScriptEngineManager(null)
  val engine = manager.getEngineByName("nashorn").asInstanceOf[Compilable with Invocable]

  val statm =
    """
      | var PessoaClass = Java.type("Pessoa");
      |
      | function processRow(name, age) {
      |   var aPessoa = new PessoaClass(name, age);
      |   aPessoa.name = "MUAhAH!"
      |   return aPessoa;
      | }
    """.stripMargin

  engine.compile(statm).eval()

  val f = engine.getInterface(classOf[CenasExtractor])
  val r = f.processRow("Luis", 8).name

  println(r)
}