using System;

​

public class A { 

}

interface I { 

}

public class B: A, I { 

}

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        B b = new B();

        A a = b;

        I i = b;

        if (a == i) { // on TS 2.9.2: Operator '===' cannot be applied to types 'A' and 'I'

        // on TS 3.0.0-dev.20180712:  This condition will always return 'false' since the types 'A' and 'I' have no overlap.

          Console.WriteLine("Hello World");

        }

    }

}

​

​

​