This is a very simple starter project that uses Esbuild + Bun for a react repo.
Esbuild is significantly faster than the bundler (webpack) that's used by create react app (see: ESBuild benchmarks).
And bun is signficantly faster than npm/yarn for installing packages.
So, this provides a faster dev experience than create react app.
I recommend asking chatGPT about it. That's how I came to understand it and why it matters.
I just wanted to try out using react from scratch. Since I always use create react app/nextJS/vite I didn't actually know how to setup a react project without them.
Also we were having webpack problems and instead of solving it by learning about webpack I made this.