# Promisify A node module to help you convert callback-style functions to promises ## Installation ```js npm install --save sb-promisify ``` ## API ```js function promisifyAll(object, throwError = true): Object function promisify(callback, throwError = true): Function export default promisify export { promisify, promisifyAll } ``` ## Example Usage ```js import fs from 'fs' import promisify from 'sb-promisify' const readFile = promisify(fs.readFile) readFile('/etc/passwd', 'utf8').then(function(contents) { console.log(contents) }, function() { console.error('Unable to read file') }) ``` ```js import fs from 'fs' import { promisifyAll } from 'sb-promisify' const promisedFS = promisifyAll(fs) promisedFS.readFileAsync('/etc/passwd', 'utf8').then(function(contents) { console.log(contents) }) promisedFS.readFile('/etc/passwd', 'utf8', function(contents) { console.log(contents) }) ``` If you set throwError to false, here's how it would react ```js 'use babel' import fs from 'fs' import promisify from 'sb-promisify' const access = promisify(fs.access, false) const readFile = promisify(fs.readFile, false) readFile('/etc/passwd').then(function(contents) { if (contents === false) { console.error('Unable to read file') } else { console.log(contents.toString('utf8')) } }) access('/etc/passwd').then(function(access) { console.log('access', access) // true or false }) ``` ## License This module is licensed under the terms of MIT License. Check the LICENSE file for more info.