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

event-message-center

v1.4.0

Published

基于发布订阅模式实现的一个事件消息中心

Downloads

87

Readme

EventMessageCenter

介绍

基于 JS 发布订阅模式实现的一个事件消息中心

博客

https://hunter1024.blog.csdn.net/article/details/124452792

调试说明

  1. pnpm i (依赖安装)
  2. pnpm build(构建)
  3. pnpm example(调试源码)
  4. example 文件夹下是使用 demo
  5. 在 esm,cjs,window 环境下导入该工具库

使用说明

安装

npm install event-message-centeryarn add event-message-centerpnpm install event-message-center

引入

ESM

import { messageCenter } from "event-message-center";

CJS

const { messageCenter } = require("event-message-center");

浏览器中

<script src="./node_modules/event-message-center/dist/umd/index.js"></script>
<script>
  console.log(MessageCenter);
</script>

用法

创建实例

const bus = new MessageCenter();

直接使用全局的单例

const bus = messageCenter;

注册事件至调度中心

messageCenter.on("a", funcA);

触发调度中心的某个或者某些该事件类型下注册的函数

messageCenter.emit("a", { state: "stop" });

销毁监听

messageCenter.un("a", funcA);
messageCenter.un("a");

只注册一次监听,执行即销毁

messageCenter.once("a", funcA);

重置调度中心

messageCenter.clear();

判断事件是否被订阅

messageCenter.has("a");

同一个事件被绑定了多少函数

messageCenter.handlerLength("a");

监听 invoke 的消息,若 handler 中进行了计算或者异步操作,会反馈给 invoke

messageCenter.watch("b", funcB);

触发 watch 事件,并且接收 watch 处理结果

messageCenter.invoke("b", { num1: 1, num2: 2 }).then((result) => {
  console.log(result);
});

构造函数 options

const messageCenter2 = new MessageCenter({ blackList: ["c"], maxLen: 2 });
黑名单
messageCenter2.on("c", () => {}); // c is not allow
限制事件个数
messageCenter2.on("b", () => {});
messageCenter2.on("b", () => {});
messageCenter2.on("b", () => {}); // the number of b must be less than 2