old_contents: /**
   * Write a function that tests whether a string is a palindrome.
   */
  var Palindrome = function() {
    'use strict';
  
    function is(word) {
  
    }
  
    return {
      is: is
    };
  };
new_contents: /**
   * Write a function that tests whether a string is a palindrome.
   */
  var Palindrome = function() {
    'use strict';
  
    function is(word) {
    		return word === word.split('').reverse().join('');
    }
  
    return {
      is: is
    };
  };
  
subject: Update palindrome.js