public class setTimeout : V8Function
    {
        public override ObjectHandle Initialize(bool isConstructCall, params InternalHandle[] args)
        {
            Callback = setTimeoutConstructWrapper;

            return base.Initialize(isConstructCall, args);
        }

        public InternalHandle setTimeoutConstructWrapper(V8Engine engine, bool isConstructCall, InternalHandle _this, params InternalHandle[] args)
        {
            Thread.Sleep(args[1]);

            return args[0].Call(null);
        }
    }

V8Engine v8Engine = new V8Engine();
var funcTemplate = v8Engine.CreateFunctionTemplate(typeof(setTimeout).Name);
var testerFunc = funcTemplate.GetFunctionObject<setTimeout>();
v8Engine.DynamicGlobalObject.setTimeout = testerFunc;