code: function matcher(match) {
    if (match instanceof RegExp) {
      return function(criteria) {
        return match.test(criteria);
      };
    }
  
    return function(criteria) {
      return criteria === match;
    };
  }
docs: Default matching rule with strict comparison. Or if the match is a regex
  then the comparison is done by calling the `test` method on the regex.
  
  @param {*} match - If the input is a regex, then matches will be done using
  the regex itself. Otherwise, the comparison is done with strict comparison.
  
  @returns {boolean}