Jint.Native.JsDateConstructor.SetUTCDateImpl C# (CSharp) Method

        public JsInstance SetUTCDateImpl(JsDictionaryObject target, JsInstance[] parameters)
        {
            if (parameters.Length == 0)
                throw new ArgumentException("There was no date specified");
            DateTime valueOf = CreateDateTime(target.ToNumber());
            valueOf = valueOf.AddDays(-valueOf.Day);
            valueOf = valueOf.AddDays(parameters[0].ToNumber());
            target.Value = valueOf;
            return target;
        }