npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

@searchfe/promise

v1.0.6

Published

A lightweight promise implementation for the frontend

Downloads

15

Readme

promise

Build Status Coverage Status

一个简易的、移动端专用的 Promise。

Promise/A+ spec. see: https://promisesaplus.com/

使用方式

使用 APM 安装:

apmjs install @searchfe/promise

RequireJS 示例使用:

require.config({
    baseUrl: "/amd_modules"
})
require(['@searchfe/promise'], function(Promise){
    Promise.resolve('hello').then(console.log)
})

API

在 Promises/A+ 的基础上新增了若干 bluebird 风格的 API。现有 API 如下:

  • #then()
  • #catch()
  • #finally()
  • .resolve()
  • .reject()
  • .all()
  • .fromCallback()
  • .mapSeries()

实现细节

unhandledrejection

按照 V8 的 Promise 实现,未捕获的 Promise 异常会触发一个名为 unhandledrejectionPromiseRejectionEvent。该 Promise 实现中,也会尝试触发这个事件。

nextTick

由于浏览器端没有 nextTick API,清空调用栈是借由其他机制实现的。 这些机制的 Fallback 顺序如下(序号越小优先级越高):

  1. setImmediate (W3C 标准)
  2. MessageChannel.postMessage(支持 Worker 的浏览器)
  3. window.postMessage(非 IE8)
  4. setTimeout(IE 8 及以下)

使用范围

  • 移动端专用:使用了移动端支持良好的 ES5 特性,IE 中使用可能会有问题
  • AMD 环境:目前只支持 AMD 环境