==== tests/cases/compiler/propertiesAndIndexers.ts (19 errors) ====
    interface X { }
    interface Y {
        n: number;
    }
    interface Z {
        s: string;
    }
    
    interface A {
        a: Y;
        b: X;
        1: Z;
    }
    
    interface B extends A {
        [n: number]: string;
        ~~~~~~~~~~~~~~~~~~~~
!!! Property '1' of type 'Z' is not assignable to numeric index type 'string'.
        c: boolean;
        3: boolean;
        ~~~~~~~~~~~
!!! Property '3' of type 'boolean' is not assignable to numeric index type 'string'.
        6(): string;
        ~~~~~~~~~~~~
!!! Property '6' of type '() => string' is not assignable to numeric index type 'string'.
    }
    
    interface B {
        4: boolean;
        ~~~~~~~~~~~
!!! Property '4' of type 'boolean' is not assignable to numeric index type 'string'.
        5: string;
    }
    
    interface C extends A {
        [s: string]: number;
        ~~~~~~~~~~~~~~~~~~~~
!!! Property '1' of type 'Z' is not assignable to string index type 'number'.
        ~~~~~~~~~~~~~~~~~~~~
!!! Property 'a' of type 'Y' is not assignable to string index type 'number'.
        ~~~~~~~~~~~~~~~~~~~~
!!! Property 'b' of type 'X' is not assignable to string index type 'number'.
        c: boolean;
        ~~~~~~~~~~~
!!! Property 'c' of type 'boolean' is not assignable to string index type 'number'.
        3: boolean;
        ~~~~~~~~~~~
!!! Property '3' of type 'boolean' is not assignable to string index type 'number'.
    }
    
    interface D extends B, C {
              ~
!!! Numeric index type 'string' is not assignable to string index type 'number'.
              ~
!!! Property '4' of type 'boolean' is not assignable to string index type 'number'.
              ~
!!! Property '5' of type 'string' is not assignable to string index type 'number'.
              ~
!!! Property '6' of type '() => string' is not assignable to string index type 'number'.
        2: Z;
        ~~~~~
!!! Property '2' of type 'Z' is not assignable to numeric index type 'string'.
        ~~~~~
!!! Property '2' of type 'Z' is not assignable to string index type 'number'.
        Infinity: number;
        ~~~~~~~~~~~~~~~~~
!!! Property 'Infinity' of type 'number' is not assignable to numeric index type 'string'.
        zoo: string;
        ~~~~~~~~~~~~
!!! Property 'zoo' of type 'string' is not assignable to string index type 'number'.
    }
    
    class P {
        [n: string]: string
    }
    
    class Q extends P {
        t: number;
        ~~~~~~~~~~
!!! Property 't' of type 'number' is not assignable to string index type 'string'.
    }
    
    var c: {
        [n: number]: string;
        c: boolean;
        3: boolean;
        ~~~~~~~~~~~
!!! Property '3' of type 'boolean' is not assignable to numeric index type 'string'.
    };