unicodeExtendedEscapesInRegularExpressions08.ts(4,20): error TS1501: This regular expression flag is only available when targeting 'es6' or later.


==== unicodeExtendedEscapesInRegularExpressions08.ts (1 errors) ====
    // ES6 Spec - 10.1.1 Static Semantics: UTF16Encoding (cp)
    //  2. If cp ≤ 65535, return cp.
    // (FFFF == 65535)
    var x = /\u{FFFF}/gu;
                       ~
!!! error TS1501: This regular expression flag is only available when targeting 'es6' or later.
    