Abstract Typedef

package ;

typedef Function2Type<T1, T2, R> = T1 -> T2 -> R;

abstract Function2<T1, T2, R>(Function2Type<T1, T2, R>) from Function2Type<T1, T2, R> to Function2Type<T1, T2, R> {
    inline function new(func : Function2Type<T1, T2, R>) {
      this = func;
    }
}

class Main {

  public static function main() : Void {
    var func : Function2<Int, Int, Int> = function(a, b) return a + b;
    trace(func(1, 2));
  }
}