==== tests/cases/compiler/stringNamedPropertyDuplicates.ts (6 errors) ====
    class C {
        "a b": number;
        "a b": number;
        ~~~~~
!!! stringNamedPropertyDuplicates.ts(3,5): error TS2000: Duplicate identifier '"a b"'. Additional locations:
!!! 	stringNamedPropertyDuplicates.ts(2,5)
        static "c d": number;
        static "c d": number;
               ~~~~~
!!! stringNamedPropertyDuplicates.ts(5,12): error TS2000: Duplicate identifier '"c d"'. Additional locations:
!!! 	stringNamedPropertyDuplicates.ts(4,5)
    }
    
    interface I {
        "a b": number;
        "a b": number;
        ~~~~~
!!! stringNamedPropertyDuplicates.ts(10,5): error TS2000: Duplicate identifier '"a b"'. Additional locations:
!!! 	stringNamedPropertyDuplicates.ts(9,5)
    }
    
    var a: {
        "a b": number;
        "a b": number;
        ~~~~~
!!! stringNamedPropertyDuplicates.ts(15,5): error TS2000: Duplicate identifier '"a b"'. Additional locations:
!!! 	stringNamedPropertyDuplicates.ts(14,5)
    }
    
    var b = {
        "a b": 1
        "a b": 1
        ~~~~~
!!! stringNamedPropertyDuplicates.ts(20,5): error TS1005: ',' expected.
        ~~~~~~~~
!!! stringNamedPropertyDuplicates.ts(20,5): error TS2000: Duplicate identifier '"a b"'. Additional locations:
!!! 	stringNamedPropertyDuplicates.ts(19,5)
    }