bob.js

module.exports = function Bob() {
  this.hey = function(str){
    var map = { "[A-Z][^a-z]":"Woah, chill out!",
                "[\?$]":'Sure',
                '^$':'Fine, be that way.'
              };

      for (var k in map) {
        var regex = new RegExp(k);
        if (str.match(regex)) {
          return map[k]
        }
      }
      return 'Whatever';
    }
  }