/**
 * Copyright (c) 2017-present A. Matías Quezada <amatiasq@gmail.com>
 */
/**
 * Polyfill for [Node8 `util.promisify()`](http://2ality.com/2017/05/util-promisify.html)
 * Recives a function and returns a function that when called will add a extra callback parameter
 * The output function will return a promise binded to the callback parameter.
 *
 * @param fn {Function} Function to be decorated
 * @returns {Function} Decorated function.
 */
export default function promisify<TOutput>(fn: (...args: any[]) => void): (...args: any[]) => Promise<TOutput>;