==== tests/cases/conformance/interfaces/interfaceDeclarations/interfaceThatHidesBaseProperty2.ts (1 errors) ====
    interface Base {
        x: { a: number };
    }
    
    interface Derived extends Base { // error
              ~~~~~~~
!!! Interface 'Derived' incorrectly extends interface 'Base':
!!!   Types of property 'x' are incompatible:
!!!     Type '{ a: string; }' is not assignable to type '{ a: number; }':
!!!       Types of property 'a' are incompatible:
!!!         Type 'string' is not assignable to type 'number'.
        x: {
            a: string;
        };
    }