# cb2promise

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> It converts from standard NodeJS callback into a ES2015 Promise.

I use this library across my project for make easy provide API's that works with callback and promise style.

## Install

```bash
npm install cb2promise --save
```

## Bencharmk

```bash
$ node benchmark.js

# cb2promise
# 1,2,3,4,5,6,7,8,8,9,10
ok ~2.65 ms (0 s + 2649092 ns)

# pify
# 1
ok ~912 μs (0 s + 911730 ns)

# es6-promisify
# 1
ok ~967 μs (0 s + 966663 ns)

# bluebird
# 1
ok ~3.41 ms (0 s + 3412077 ns)

all benchmarks completed
ok ~7.94 ms (0 s + 7939562 ns)
```

## Usage

```js
const cb2promise = require('cb2promise')

const callbackFn = function (message, done) {
  return done(null, message)
}

const promise = cb2promise(callbackFn, 'hello world')

promise().then(console.log)
// => hello world
```

## License

MIT © [Kiko Beats](http://www.kikobeats.com)