unicodeExtendedEscapesInRegularExpressions15.ts(1,44): error TS1501: This regular expression flag is only available when targeting 'es6' or later.


==== unicodeExtendedEscapesInRegularExpressions15.ts (1 errors) ====
    var x = /\u{abcd}\u{ef12}\u{3456}\u{7890}/gu;
                                               ~
!!! error TS1501: This regular expression flag is only available when targeting 'es6' or later.
    