==== tests/cases/compiler/inheritedStringIndexersFromDifferentBaseTypes2.ts (1 errors) ====
    // indexer in B is a subtype of indexer in A
    interface A {
        [s: string]: {
            a;
        };
    }
    interface B {
        [s: number]: {
            a;
            b;
        };
    }
    interface C extends A, B { } // ok
    
    interface D {
        [s: number]: {};
    }
    interface E extends A, D { } // error
              ~
!!! Numeric index type '{}' is not assignable to string index type '{ a: any; }'.
    
    interface F extends A, D {
        [s: number]: {
            a;
        };
    } // ok because we overrode D's number index signature