unjs / crossws

🔌 Cross-platform WebSocket Servers for Node.js, Deno, Bun and Cloudflare Workers.
https://crossws.unjs.io
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crossws

npm version npm downloads

Elegant, typed, and simple toolkit to implement cross-platform WebSocket servers.

👉 📖 documentation

Features

🧩 Seamlessly integrates with Bun, Cloudflare Workers, Deno and Node.js and any compatible web framework.

✅ Prebundled with ws for Node.js support with alternative/much faster uWebSockets adapter.

📦 Extremely lightweight and tree-shakable conditional ESM exports.

🚀 High-performance and simple hooks API, without per-connection callback creation.

🌟 Typed hooks API and developer-friendly object inspection.

[^1]: crossws supports Node.js via npm:ws (prebundled) or uWebSockets.js.

Contribution

Local development - Clone this repository - Install the latest LTS version of [Node.js](https://nodejs.org/en/) - Enable [Corepack](https://github.com/nodejs/corepack) using `corepack enable` - Install dependencies using `pnpm install` - Run examples using `pnpm play:` scripts

License

Published under the MIT license. Made by @pi0 and community 💛


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