==== tests/cases/conformance/interfaces/interfaceDeclarations/interfaceWithStringIndexerHidingBaseTypeIndexer2.ts (1 errors) ====
    interface Base {
        [x: number]: { a: number; b: number }
        x: {
            a: number; b: number;
        }
    }
    
    interface Derived extends Base {
        [x: string]: {
            a: number
        };
    
        y: {
            a: number;
        }
        // error
        1: {
        ~~~~
            a: number;
    ~~~~~~~~~~~~~~~~~~
        }
    ~~~~~
!!! Property '1' of type '{ a: number; }' is not assignable to numeric index type '{ a: number; b: number; }'.
    }