# with-callback

> A small helper function to bridge the gap when returning a promise from a function that takes a callback

Latest version **1.0.2** (published 2016-11-01) · MIT license · 0 weekly downloads

## Install

```sh
npm install with-callback
pnpm add with-callback
yarn add with-callback
bun add with-callback
```

## Health

**Score 15/100 (F)** — status: abandoned.

Positive: no vulnerabilities.

Warnings: low downloads; no types; no esm support.

Negative: abandoned; low maintenance score.

## Facts

| | |
|---|---|
| Version | 1.0.2 |
| Published | 2016-11-01 |
| First published | 2016-04-26 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | none |
| Module format | CommonJS |
| Node | >=4 |
| Dependencies | 0 |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 3 |
| Author | David Brockman Smoliansky |
| Maintainers | dbrockman |

## Links

- npm: https://www.npmjs.com/package/with-callback
- Repository: https://github.com/dbrockman/with-callback
- Homepage: https://github.com/dbrockman/with-callback#readme
- Issues: https://github.com/dbrockman/with-callback/issues
- npm.io page: https://npm.io/package/with-callback

## Recent versions

- 1.0.2 (latest) — 2016-11-01
- 1.0.1 — 2016-04-26
- 1.0.0 — 2016-04-26

## README

# with-callback

A small helper function to bridge the gap when returning a promise from a function that takes a callback


Note that this module will not introduce any custom Promise implementation.
It will use the global `Promise` (requires node >= v4).


```js
import withCallback from 'with-callback';
// or const withCallback = require('with-callback');


// withCallback returns a promise and invokes the function with a callback
// used to fulfill the promise
function readFile(name) {
  return withCallback(callback => fs.readFile(name, callback));
}


// arguments can also be passed as an array
function readFile(name) {
  return withCallback([name], fs.readFile);
}


// A second function can be passed to withCallback to map all arguments
// passed to the callback to a single value used to resolve the promise.
function example(callback) {
  callback(null, 'a', 'b');
}
const promise = withCallback(example, (a, b) => [a, b]);
// promise resolves with ['a', 'b']
```

---
_Source: https://npm.io/package/with-callback · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._