OXC Transformers are amazingly faster than Babel. I'm building a framework (https://github.com/vmsp/flypath) for web, iOS and Android native development that's fully backed by OXC and Vite. Instead of transforming styles using Babel like StyleX, I just use OXC. Instead of Metro (React Native's bundler), which also uses Babel, it's just Vite. It's still very early but it's plenty, plenty fast.