gistfile1.js

function Anagram(word) {
  this.word = word.toLowerCase();
  function matches(words) {
    if(Array.isArray(words)) {
      return words.filter(isAnagram);
    } else {
      return Array.prototype.slice.call(arguments).filter(isAnagram);
    }
  }
  function isAnagram(word) {
    word = word.toLowerCase();
    return word !== this.word && sort(this.word) === sort(word);
  }
  function sort(word) {
    return word.split("").sort().join("");
  }

  return {matches:matches}
}
module.exports = Anagram;