currently-unhandled

2018-10-12 admin

currently-unhandled是什么

什么是currently-unhandled,Track the list of currently unhandled promise rejections.

currently-unhandled使用教程帮助文档

currently-unhandled Build Status Coverage Status

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

本站文章除注明转载外,均为本站原创或编译。欢迎任何形式的转载,但请务必注明出处。

转载请注明:文章转载自 JavaScript中文网 [https://www.javascriptcn.com]

本文地址:https://www.javascriptcn.com/read-42519.html

文章标题:currently-unhandled

回到顶部