DEV Community

Rigal Patel
Rigal Patel

Posted on

Bun vs Node.js – Why Developers Are Switching

🔑 Key Reasons to Use Bun Instead of Node.js

1. Speed First

  • Runs on JavaScriptCore (Safari engine) → faster startup, low memory.

  • HTTP server benchmarks: ~110k req/sec vs Node’s ~60k.

  • File operations & SQLite are 3–6× faster.

👉 Perfect for serverless apps & cold starts.

2. All-in-One Tooling

Comes with:
✅ Runtime
✅ Package manager (faster than npm/yarn)
✅ Bundler
✅ Test runner
✅ Hot reload

👉 No need to install 4–5 separate tools.

3. Native TypeScript

  • Run .ts files directly with:
  • No Babel, ts-node, or config headaches.

4. Drop-In for Node.js

  • Supports most Node.js APIs.

  • Can reuse package.json.

  • Great for new projects, but some Node packages may still break.

5. Where Node.js Still Wins

  • Mature ecosystem, huge community.

  • Long-term support (LTS).

  • Enterprise reliability.

👉 Use Node.js for legacy apps & production workloads needing stability.

⚡ Quick Comparison

  • Speed → Bun is faster, Node.js is stable but slower

  • Tooling → Bun has everything built-in, Node.js relies on external packages

  • TypeScript → Bun supports natively, Node.js needs setup

  • Ecosystem → Node.js is mature, Bun is still growing

Best for → Bun = new/greenfield projects, Node.js = enterprise/legacy apps

References

Bun Official Docs

💬 Which runtime do you prefer in 2025—Bun or Node.js? Let me know in the comments! 😊

👉 If you enjoyed this blog, follow me for more tips and tricks! 🚀

Top comments (0)