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currently-unhandled
Track the list of currently unhandled promise rejections.
Install
$ npm install --save currently-unhandled
Usage
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