56 lines
1.4 KiB
Markdown
56 lines
1.4 KiB
Markdown
![]() |
# loud-rejection [![Build Status](https://travis-ci.org/sindresorhus/loud-rejection.svg?branch=master)](https://travis-ci.org/sindresorhus/loud-rejection) [![Coverage Status](https://coveralls.io/repos/sindresorhus/loud-rejection/badge.svg?branch=master&service=github)](https://coveralls.io/github/sindresorhus/loud-rejection?branch=master)
|
||
|
|
||
|
> Make unhandled promise rejections fail loudly instead of the default [silent fail](https://gist.github.com/benjamingr/0237932cee84712951a2)
|
||
|
|
||
|
By default, promises fail silently if you don't attach a `.catch()` handler to them.
|
||
|
|
||
|
Use it in top-level things like tests, CLI tools, apps, etc, **but not in reusable modules.**
|
||
|
|
||
|
|
||
|
## Install
|
||
|
|
||
|
```
|
||
|
$ npm install --save loud-rejection
|
||
|
```
|
||
|
|
||
|
|
||
|
## Usage
|
||
|
|
||
|
```js
|
||
|
const loudRejection = require('loud-rejection');
|
||
|
const promiseFn = require('promise-fn');
|
||
|
|
||
|
// Install the unhandledRejection listeners
|
||
|
loudRejection();
|
||
|
|
||
|
promiseFn();
|
||
|
```
|
||
|
|
||
|
Without this module it's more verbose and you might even miss some that will fail silently:
|
||
|
|
||
|
```js
|
||
|
const promiseFn = require('promise-fn');
|
||
|
|
||
|
function error(err) {
|
||
|
console.error(err.stack);
|
||
|
process.exit(1);
|
||
|
}
|
||
|
|
||
|
promiseFn().catch(error);
|
||
|
```
|
||
|
|
||
|
### Register script
|
||
|
|
||
|
Alternatively to the above, you may simply require `loud-rejection/register` and the unhandledRejection listener will be automagically installed for you.
|
||
|
|
||
|
This is handy for ES2015 imports:
|
||
|
|
||
|
```js
|
||
|
import 'loud-rejection/register';
|
||
|
```
|
||
|
|
||
|
|
||
|
## License
|
||
|
|
||
|
MIT © [Sindre Sorhus](http://sindresorhus.com)
|