/**
 * IsEmpty
 *  
 * Returns true if the passed-in object is empty.
 *
 * @param {object} input
 */
var isEmpty = function(input) {

  // If the passed-in object is an array or a string
  if (isArray(input) || typeof input === 'string') {
    return input.length === 0;
  }

  // If the passed-in object is an object
  if (isObject(input)) {
    for (var key in input) {
      if (hasOwnProperty.call(input, key)) return false;
    }
  }

  return true;

};
@@ -128,16 +128,110 @@
 put) %7B%0A%0A
+  if (isNumber(input)) %7B%0A    return false;%0A  %7D%0A%0A  if (input === null) %7B%0A    return true;%0A  %7D%0A%0A
   // If 

Fix the ‘isEmpty’ utility (do not detect a number as an empty object)