callback-promisify

npm install --save callback-promisify

USAGE

import { promisify, errorOnlyPromisify, errorRejectPromisify } from 'callback-promisify';

promisify

let fn = promisify(fs.readFile, fs);
fn(file).then(response => console.log(response));

errorOnlyPromisify

let fn = promisify(fs.readFile, fs);
fn(file).then(err => console.log(err));

errorRejectPromisify

let fn = promisify(fs.readFile, fs);
fn(file).then(response => console.log(response)).catch(err => console.log(err));