code: function defineConstants(target, properties, options) {
    return defineProperties(target, properties, {
      writable: false,
      configurable: false,
      enumerable: options && options.enumerable
    });
  }
docs: Shortcut for Object.defineProperties
  
  @param {Object} target
  @param {Object} [properties]
  @param {Object} [options]
  @param {boolean} [options.enumerable=false]
  @return {Object} target