unicodeExtendedEscapesInStrings12_ES5.ts(1,21): error TS1198: An extended Unicode escape value must be between 0x0 and 0x10FFFF inclusive.


==== unicodeExtendedEscapesInStrings12_ES5.ts (1 errors) ====
    var x = "\u{FFFFFFFF}";
                        
!!! error TS1198: An extended Unicode escape value must be between 0x0 and 0x10FFFF inclusive.
    