nl_tokens: ES6 21 . 2 . 5 . 3 .
pl_tokens: function RegExpGetFlags ( ) { if ( ! IS_RECEIVER ( this ) ) { throw MakeTypeError ( kRegExpNonObject , "RegExp.prototype.flags" , TO_STRING ( this ) ) ; } var result = '' ; if ( this . global ) result += 'g' ; if ( this . ignoreCase ) <mask> += 'i' ; if ( this . multiline ) result += 'm' ; if ( this . unicode ) result += 'u' ; if ( this . sticky ) result += 'y' ; return result ; }