import { Subject } from "rxjs";

class EventEmitter<T> extends Subject<T> {}

class Something {
    public a: EventEmitter<any>;
    protected b: EventEmitter<any>;
    public c: Subject<any>;
           ~                            [no-exposed % ("c")]
    protected d: Subject<any>;
              ~                         [no-exposed % ("d")]
}

[no-exposed]: Subject '%s' must be private.