Hello,

You've used an s suffix for the regex clauses and i think because of that suffix index selection and profile output is not working correctly. You can not use find() for profile collection because it gives an error message about s suffix.

var options = caseInsensitive ? "is" : "s";

When i change the above line with

var options = caseInsensitive ? "i" : "";

line, everything is going well.

But is there a reason for that "s" suffix.