I Built a React Framework in 2025 - Here's What I Learned

Why I Built It

• Create React App is deprecated
• Vite felt too complex for simple projects
• Wanted to learn Bun's native APIs

The Tech Stack

• Bun.Transpiler for JSX/TSX
• Elysia for dev server
• Bun.build for production
• Zero plugins, zero config

Performance Results

• bertui builds pages depending on website size a small 2 to 5 pages website dev server will load in less tha a second 1st build will take about 2 to 5 seconds and the rest lessa time

What I'd Do Differently

Learn bun's api perfectly because i knew about bun and a week later i had this idea dn i started making it which made it hard to know what to use and when to use it

Try It Yourself

bunx create-bertui my-app

Conclusion

Building a framework taught me more about React tooling than years of using frameworks.