Value of the Interop.AllowGetType option can be set only once

[Taritsyn]

Hello!

Value of the Interop.AllowGetType option can be set only for the first instance of engine, then it will be cached and all other engine instances will use it. To reproduce this error, I created a example:

using System;

using Jint;
using Jint.Native;

namespace TestJint
{
    class Program
    {
        static void Main(string[] args)
        {
            // Displays the full type name
            TestAllowGetTypeOption(true);

            // Should throw an exception, but displays the full type name
            TestAllowGetTypeOption(false);
        }

        private static void TestAllowGetTypeOption(bool allowGetType)
        {
            var uri = new Uri("https://github.com/sebastienros/jint");
            string itemName = nameof(uri);
            string input = itemName + ".GetType();";

            Console.WriteLine("AllowGetType = {0}", allowGetType);

            using (var engine = new Engine(options => options.Interop.AllowGetType = allowGetType))
            {
                engine.SetValue(itemName, JsValue.FromObject(engine, uri));
                string result = engine.Evaluate(input).ToString();

                Console.WriteLine("Result = {0}", result);
            }

            Console.WriteLine();
        }
    }
}

Most likely, this error is caused by the default value of the Interop.TypeResolver option.

[lahma]

Thank you @Taritsyn once again for a bug report with a great repro, should now be fixed in main!

[Taritsyn]

Thanks!