// @target: es2015
class Base {
    x: {
        foo: string;
    }
}

class Derived extends Base {
    x: {
        foo: any;
    }
}

class Base2 {
    static y: {
        foo: string;
    }
}

class Derived2 extends Base2 {
    static y: {
        foo: any;
    }
}