==== tests/cases/compiler/augmentedTypesClass.ts (2 errors) ====
    //// class then var
    class c1 { public foo() { } }
    var c1 = 1; // error
        ~~
!!! Duplicate identifier 'c1'.
    
    //// class then enum
    class c4 { public foo() { } }
    enum c4 { One } // error
         ~~
!!! Duplicate identifier 'c4'.