tests/cases/compiler/overloadingOnConstants2.ts(9,10): error TS2394: This overload signature is not compatible with its implementation signature.
tests/cases/compiler/overloadingOnConstants2.ts(15,13): error TS2769: No overload matches this call.
  Overload 1 of 2, '(x: "hi", items: string[]): D', gave the following error.
    Argument of type '"um"' is not assignable to parameter of type '"hi"'.
  Overload 2 of 2, '(x: "bye", items: string[]): E', gave the following error.
    Argument of type '"um"' is not assignable to parameter of type '"bye"'.
tests/cases/compiler/overloadingOnConstants2.ts(19,10): error TS2394: This overload signature is not compatible with its implementation signature.


==== tests/cases/compiler/overloadingOnConstants2.ts (3 errors) ====
    class C {
       private x = 1;
    }
    class D extends C {}
    class E { 
       private y = 1;
    }
    function foo(x: "hi", items: string[]): D;
    function foo(x: "bye", items: string[]): E;
             ~~~
!!! error TS2394: This overload signature is not compatible with its implementation signature.
!!! related TS2750 tests/cases/compiler/overloadingOnConstants2.ts:10:10: The implementation signature is declared here.
    function foo(x: string, items: string[]): C {
       return null;
    }
    var a: D = foo("hi", []); // D
    var b: E = foo("bye", []); // E 
    var c = foo("um", []); // error
                ~~~~
!!! error TS2769: No overload matches this call.
!!! error TS2769:   Overload 1 of 2, '(x: "hi", items: string[]): D', gave the following error.
!!! error TS2769:     Argument of type '"um"' is not assignable to parameter of type '"hi"'.
!!! error TS2769:   Overload 2 of 2, '(x: "bye", items: string[]): E', gave the following error.
!!! error TS2769:     Argument of type '"um"' is not assignable to parameter of type '"bye"'.
!!! related TS2793 tests/cases/compiler/overloadingOnConstants2.ts:10:10: The call would have succeeded against this implementation, but implementation signatures of overloads are not externally visible.
    
    
    //function bar(x: "hi", items: string[]): D;
    function bar(x: "bye", items: string[]): E;
             ~~~
!!! error TS2394: This overload signature is not compatible with its implementation signature.
!!! related TS2750 tests/cases/compiler/overloadingOnConstants2.ts:21:10: The implementation signature is declared here.
    function bar(x: string, items: string[]): C;
    function bar(x: string, items: string[]): C {
       return null;
    }
    
    var d: D = bar("hi", []); // D
    var e: E = bar("bye", []); // E 
    var f: C = bar("um", []); // C