# hard-rejection

> Make unhandled promise rejections fail hard right away instead of the default silent fail

Latest version **2.1.0** (published 2019-04-02) · MIT license · 0 weekly downloads

## Install

```sh
npm install hard-rejection
pnpm add hard-rejection
yarn add hard-rejection
bun add hard-rejection
```

## Health

**Score 23/100 (F)** — status: abandoned.

Positive: has types package; no vulnerabilities; high quality score.

Warnings: low downloads; no esm support.

Negative: abandoned; low maintenance score.

## Facts

| | |
|---|---|
| Version | 2.1.0 |
| Published | 2019-04-02 |
| First published | 2016-08-27 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | separate (@types/hard-rejection) |
| Module format | CommonJS |
| Node | >=6 |
| Dependencies | 0 |
| Unpacked size | 5 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 106 |
| Author | Sindre Sorhus |
| Maintainers | sindresorhus |
| Keywords | promise, promises, unhandled, uncaught, rejection, hard, fail, catch, throw, handler, exit, debug, debugging, verbose, immediate, immediately |

## Links

- npm: https://www.npmjs.com/package/hard-rejection
- Repository: https://github.com/sindresorhus/hard-rejection
- Homepage: https://github.com/sindresorhus/hard-rejection#readme
- Issues: https://github.com/sindresorhus/hard-rejection/issues
- npm.io page: https://npm.io/package/hard-rejection

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## Recent versions

- 2.1.0 (latest) — 2019-04-02
- 2.0.0 — 2019-03-17
- 1.0.0 — 2017-01-13
- 0.1.0 — 2016-08-27

## README

# hard-rejection [![Build Status](https://travis-ci.org/sindresorhus/hard-rejection.svg?branch=master)](https://travis-ci.org/sindresorhus/hard-rejection)

> Make unhandled promise rejections fail hard right away instead of the default [silent fail](https://gist.github.com/benjamingr/0237932cee84712951a2)

Promises fail silently if you don't attach a `.catch()` handler.

This module exits the process with an error message right away when an unhandled rejection is encountered.<br>
**Note: That might not be desirable as unhandled rejections can be [handled at a future point in time](https://nodejs.org/api/process.html#process_event_unhandledrejection), although not common. You've been warned.**

Intended for top-level long-running processes like servers, **but not in reusable modules.**<br>
For command-line apps and tests, see [`loud-rejection`](https://github.com/sindresorhus/loud-rejection).


## Install

```
$ npm install hard-rejection
```


## Usage

```js
const hardRejection = require('hard-rejection');
const promiseFunction = require('some-promise-fn');

// Install the handler
hardRejection();

promiseFunction();
```

Without this module it's more verbose and you might even miss some that will fail silently:

```js
const promiseFunction = require('some-promise-fn');

function error(error) {
	console.error(error.stack);
	process.exit(1);
}

promiseFunction().catch(error);
```

### Register script

Alternatively to the above, you may simply require `hard-rejection/register` and the handler will be automagically installed for you.

This is handy for ES2015 imports:

```js
import 'hard-rejection/register';
```


## API

### hardRejection([log])

#### log

Type: `Function`<br>
Default: `console.error`

Custom logging function to print the rejected promise. Receives the error stack.


## Related

- [loud-rejection](https://github.com/sindresorhus/loud-rejection) - Make unhandled promise rejections fail loudly instead of the default silent fail
- [More…](https://github.com/sindresorhus/promise-fun)


## License

MIT © [Sindre Sorhus](https://sindresorhus.com)

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