/**
 * Used to subclass an existing class by emulating ES subclassing using the
 * `extends` keyword.
 *
 * @param    {Function} superClass
 *           The class to inherit from
 *
 * @param    {Object}   [subClassMethods={}]
 *           Methods of the new class
 *
 * @return   {Function}
 *           The new class with subClassMethods that inherited superClass.
 */
declare const extend: (superClass: any, subClassMethods?: {}) => () => void;
export default extend;