old_contents: /**
   * @module deep-freeze
   * @description Provides function to deep freeze objects.
   * @version 1.1.0
   * @author Anatoliy Gatt [anatoliy.gatt@aol.com]
   * @copyright Copyright (c) 2015 Anatoliy Gatt
   * @license MIT
   */
  
  'use strict';
  
  /**
   * @public
   * @function deepFreeze
   * @description Deep freeze object.
   * @param {Object} object - Object to deep freeze.
   * @returns {Object} - Deep frozen object.
   */
  
  function deepFreeze(object) {
      if (object) {
          var property, propertyKey;
          object = Object.freeze(object);
          for (propertyKey in object) {
              if(object.hasOwnProperty(propertyKey)) {
                  property = object[propertyKey];
                  if (((typeof property !== 'object') || !(property instanceof Object)) || Object.isFrozen(property)) {
                      continue;
                  }
                  deepFreeze(property);
              }
          }
      }
      return object;
  }
  
  /**
   * @public
   * @description Expose function to deep freeze objects.
   * @param {Object} object - Object to deep freeze.
   * @returns {Object} - Deep frozen object.
   */
  
  module.exports = function(object) {
      return deepFreeze(object);
  };
new_contents: /**
   * @module deep-freeze
   * @description Provides function to deep freeze objects.
   * @version 1.1.0
   * @author Anatoliy Gatt [anatoliy.gatt@aol.com]
   * @copyright Copyright (c) 2015 Anatoliy Gatt
   * @license MIT
   */
  
  'use strict';
  
  /**
   * @public
   * @function deepFreeze
   * @description Deep freeze object.
   * @param {Object} object - Object to deep freeze.
   * @returns {Object} - Deep frozen object.
   */
  
  function deepFreeze(object) {
      if (object) {
          var property, propertyKey;
          object = Object.freeze(object);
          for (propertyKey in object) {
              if (object.hasOwnProperty(propertyKey)) {
                  property = object[propertyKey];
                  if (((typeof property !== 'object') || !(property instanceof Object)) || Object.isFrozen(property)) {
                      continue;
                  }
                  deepFreeze(property);
              }
          }
      }
      return object;
  }
  
  /**
   * @public
   * @description Expose function to deep freeze objects.
   * @param {Object} object - Object to deep freeze.
   * @returns {Object} - Deep frozen object.
   */
  
  module.exports = function(object) {
      return deepFreeze(object);
  };
subject: Fix 'if statement' coding style in deep-freeze.js