Test1.cs

using System;
using System.Collections.Generic;
using System.Linq;
using V8.Net;

namespace Test1
{
    class GlobalUtils
    {
        public static void WriteLine(string s)
        {
            Console.WriteLine(s);
        }
    }

    public class TestClass
    {
        public TestClass()
        {
        }

        public void Foo()
        {
            Console.WriteLine("base Foo called");
        }

        public void Bar()
        {
            Console.WriteLine("base Bar called");
        }
    }

    class Program
    {
        public static void Main(string[] args)
        {
            var js = new V8Engine();
            
            js.SetFlagsFromString("--use-strict");

            js.RegisterType<GlobalUtils>("utils", false, ScriptMemberSecurity.Locked);
            js.GlobalObject.SetProperty(typeof(GlobalUtils));

            js.RegisterType<TestClass>();
            js.GlobalObject.SetProperty(typeof(TestClass));

            js.ConsoleExecute(jssrc);
        }

        private static string jssrc = @"
class Derived extends TestClass {
    constructor() {
        super();
        utils.WriteLine('derived constructor');
    }

    Foo() {
        utils.WriteLine('Derived foo');
    }

    Something() {
        utils.WriteLine('Something');
    }
}

// BUG 1 -- this crashes
//utils.WriteLine(Object.getPrototypeOf('Derived'));

var d = new Derived();
d.Foo();
d.Bar();
d.Something();
";
    }
}