forked from zhurui/management
45 lines
1.5 KiB
Markdown
45 lines
1.5 KiB
Markdown
|
# currently-unhandled [](https://travis-ci.org/jamestalmage/currently-unhandled) [](https://coveralls.io/github/jamestalmage/currently-unhandled?branch=master)
|
||
|
|
|
||
|
|
> Track the list of currently unhandled promise rejections.
|
||
|
|
|
||
|
|
|
||
|
|
## Install
|
||
|
|
|
||
|
|
```
|
||
|
|
$ npm install --save currently-unhandled
|
||
|
|
```
|
||
|
|
|
||
|
|
|
||
|
|
## Usage
|
||
|
|
|
||
|
|
```js
|
||
|
|
const currentlyUnhandled = require('currently-unhandled')(); // <- note the invocation
|
||
|
|
|
||
|
|
var fooError = new Error('foo');
|
||
|
|
var p = Promise.reject(new Error('foo'));
|
||
|
|
|
||
|
|
// on the next tick - unhandled rejected promise is added to the list:
|
||
|
|
currentlyUnhandled();
|
||
|
|
//=> [{promise: p, reason: fooError}]'
|
||
|
|
|
||
|
|
p.catch(() => {});
|
||
|
|
|
||
|
|
// on the next tick - handled promise is now removed from the list:
|
||
|
|
currentlyUnhandled();
|
||
|
|
//=> [];
|
||
|
|
```
|
||
|
|
|
||
|
|
## API
|
||
|
|
|
||
|
|
### currentlyUnhandled()
|
||
|
|
|
||
|
|
Returns an array of objects with `promise` and `reason` properties representing the rejected promises that currently do not have a rejection handler. The list grows and shrinks as unhandledRejections are published, and later handled.
|
||
|
|
|
||
|
|
## Browser Support
|
||
|
|
|
||
|
|
This module can be bundled with `browserify`. At time of writing, it will work with native Promises in the Chrome browser only. For best cross-browser support, use `bluebird` instead of native Promise support in browsers.
|
||
|
|
|
||
|
|
## License
|
||
|
|
|
||
|
|
MIT © [James Talmage](http://github.com/jamestalmage)
|