JS Proxy on Clr Object - Existing methods on underlying object cannot be called

[martinbu]

Hi,

I am using Jint 3.0.0-beta-2054 now. And issue/discussion #1643 works as expected now. Thank you @viruscamp
But I think I have found another issue with clr objects. Calling an existing function on a proxy object leads to System.Reflection.TargetException: 'Object does not match target type.'

class TestClass
{
    public string Name => "My Name is Test";

    public void SayHello()
    {
        Console.WriteLine("Hello");
    }

    public int Add(int a, int b)
    {
        return a + b;
    }
}

new Engine()
    .SetValue("T", new TestClass())
    .Execute("""
        const handler = {
            get(target, property, receiver) {

                if (!target[property]) {
                    return (...args) => "Not available";
                }

                // return Reflect.get(target, property, receiver);
                return Reflect.get(...arguments);
            }
        };

        const p = new Proxy(T, handler);
        const name = p.Name;  // works
        const s = p.GetX();   // works because method does NOT exist on clr object
        
        p.SayHello();          // throws System.Reflection.TargetException: 'Object does not match target type.'
        const t = p.Add(5,3);  // throws System.Reflection.TargetException: 'Object does not match target type.'
    """);

The same code is working fine in pure javascript

class TestClass {
  get Name() {
    return 'My name is test';
  }

  SayHello() {
    console.log('Hello', this.Name);
  }

  Add(a, b) {
    return a + b;
  }
}

const handler = {
    get(target, property, receiver) {

        if (!target[property]) {
            return (...args) => "Not available";
        }

        // return Reflect.get(target, property, receiver);
        return Reflect.get(...arguments);
    }
};

const T = new TestClass();

const p = new Proxy(T, handler);
const name = p.Name;
const s = p.GetX();
console.log(s);

p.SayHello();
const t = p.Add(5,3);
console.log(t);

/* Output
> "Not available"
> "Hello" "My name is test"
> 8
*/