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

@flok-editor/pubsub

v1.0.1

Published

Pub/Sub client-server, used for remote code execution and message passing on Flok

Downloads

32

Readme

@flok-editor/pubsub

WebSocket-based Pub/Sub client and server, used for remote code execution and message passing in Flok.

Features

  • Basic Publish/Subscribe functionality: subscribe, unsubscribe, publish, unsubscribeAll.
  • Payload is JSON serialized, topics are any string.
  • Allows subscribing or unsubscribing without being connected by storing state on the client.
  • Automatically reconnects if connection is lost, recovering client's state.
  • Ping/pong mechanism for detecting and closing broken connections both on client and server.

Usage

Server

import { WebSocketServer } from "ws"
import { PubSubServer } from "@flok-editor/pubsub"

// To use the server, you need to create a `WebSocketServer` and pass it to
// `PubSubServer`.
const wss = new WebSocketServer({ port: 4000 });
const server = new PubSubServer({ wss });

console.log(`PubSub server listening on`, wss.address())

Client

import { PubSubClient } from "@flok-editor/pubsub"

const client = new PubSubClient({ url: "ws://localhost:4000" });

// Subscribe to topics
client.subscribe("b");
client.subscribe("a");

client.start();

// Wait for the connection to be made, otherwise published messages are discarded.
let internalId;
client.on("open", () => {
  // Publish a message (any JSON serializable object) to a topic
  internalId = setInterval(() => {
    client.publish("a", { salutation: "hello!" })
  }, 2000);
})

// Add an error event handler to ignore connection errors
client.on("error", () => { });

client.on("close", () => clearInterval(internalId))

setTimeout(() => {
  // Unsubscribe from a topic
  client.unsubscribe("b");
  // ... or from all topics with a single call
  client.unsubscribeAll();
}, 5000)

// you can add a listener for all message events
client.on("message", (topic, data) => {
  console.log("message", topic, data)
})

// ...or only from a specific topic
client.on("message:a", (data) => {
  console.log("message from topic 'a'", data)
})

// Finally, you can subscribe and listen to messages in a single call
client.subscribe("c", (data) => {
  console.log("message from 'c'", data);
});

Development

Run npm install to install dependencies.

Run npm run build to build package.