Express JS routing non ascii

I need to parse routes like:

/symbol/🌊/page/2
/symbol/A/page/2

So there might be any symbol except special chars /#?$%&*@$(){}[] and quotes. But regexp like [^...] seems to exclude non ascii chars. And regexp like [\u0030-\uFFFF] not matching request:

router.get('/:symbol([\u0030-\uFFFF]+)/page/:page$', function(req, res, next) {

via MadDocNC