<h1>If you’ve been in the Node.js ecosystem for a while, you know the ws library is the bedrock of real-time apps. But as we move further into a multi-runtime world—juggling Node, Bun, Deno, and Cloudflare Workers—the “old way” is starting to show its age.</h1>
I just came across @rabbx/ws, and it feels like the upgrade we’ve been waiting for. Here is why it’s making waves:
🚀 Zero Copy, Zero Deps: It’s a tiny 9KB (compared to 80KB+ for traditional setups). No native dependencies means no “node-gyp” headaches and lightning-fast installs.
🌍 True Cross-Platform: It runs the exact same code on Node, Bun, Deno, and the browser. It uses native hooks (like Bun.serve.websocket) where available to squeeze out maximum performance.
📈 Massive Scalability: Benchmarks show it handling 180k concurrent connections on Node with 2.6x less memory than the standard ws library.
<h3>One API, Every Runtime</h3>
The best part? It uses the Web Standard API (EventTarget, MessageEvent). No custom emitters to learn.
Here is how simple it is to spin up a server in Bun:
<pre><code>import { createBunServer } from &#x27;@rabbx/ws/server&#x27;;

// 1. Setup the WebSocket logic
const { config, server: wss } = createBunServer({ path: &#x27;/ws&#x27; });

wss.addEventListener(&#x27;connection&#x27;, ({ detail: { socket } }) =&gt; {
 socket.addEventListener(&#x27;message&#x27;, (e) =&gt; {
 socket.send(`Echo: ${e.data}`);
 });
});

// 2. Serve it
Bun.serve({
 port: 3000,
 fetch: config.fetch,
 websocket: config.websocket
});

console.log(&quot;Server running on port 3000&quot;);
</code></pre>
<h3>The Verdict</h3>
If you are looking to reduce your bundle size, lower your server costs, or finally write WebSocket code that actually runs on the Edge, give @rabbx/ws a look.
Check it out on GitHub: <a href="https://github.com/rabbxdev/ws" target="_blank" rel="noopener nofollow">github.com/rabbxdev/ws</a>
#WebSockets #Nodejs #BunJS #WebDev #OpenSource #SoftwareEngineering

🚀 Daily Open Source Tools Squad delivers daily articles, open-source projects, and technical resources for Developers & DevOps pros. Stay updated with the latest trends & insights!

📬 Join our mailing list! → theinfinity.dev

The "WS" Evolution: Why I’m Switching to @rabbx/ws in 2026