Can Gradle execute JavaScript (instead of Java entry point)?

Question

Can Gradle possibly execute JavaScript?

While there is no standard plugins for javascript, is it possible to make something like JavaExec

task execute(type:JavaExec) {
   main = mainClass
   classpath = sourceSets.main.runtimeClasspath
}

Reason: with Java 8 Nashorn and Avatar.js project application entry point can be JavaScript file, not Java.

Searches for Gradle JavaScript plugin gives web oriented solutions, like https://github.com/eriwen/gradle-js-plugin

related to Gradle to execute Java class (without modifying build.gradle)