==== tests/cases/compiler/interfaceExtendsClassWithPrivate2.ts (4 errors) ====
    class C {
        public foo(x: any) { return x; }
        private x = 1;
    }
    
    interface I extends C {
        other(x: any): any;
    }
    
    class D extends C implements I { // error
          ~
!!! Class 'D' incorrectly extends base class 'C':
!!!   Private property 'x' cannot be reimplemented.
          ~
!!! Class 'D' incorrectly implements interface 'I':
!!!   Private property 'x' cannot be reimplemented.
        public foo(x: any) { return x; }
        private x = 2;
        private y = 3;
        other(x: any) { return x; }
        bar() {}
    } 
    
    class D2 extends C implements I { // error
          ~~
!!! Class 'D2' incorrectly extends base class 'C':
!!!   Private property 'x' cannot be reimplemented.
          ~~
!!! Class 'D2' incorrectly implements interface 'I':
!!!   Private property 'x' cannot be reimplemented.
        public foo(x: any) { return x; }
        private x = "";
        other(x: any) { return x; }
        bar() { }
    }