get count of vowels and consonants

function getCount(words) {
  var words      = (typeof words == 'string') ? words : '',
      count      = re => (words.match(re) || []).length, //when match fails to match, it returns null
      vowels     = count(/[aeiou]/ig), //g - return all matches, not only the first one
      consonants = count(/[bcdfghjklmnpqrstvxzwy]/ig);

  return {vowels, consonants};
}