Sandpack Transpiler

A highly optimized transpiler for JSX, CJS, and ESM, built for the Sandpack ecosystem and based on Sucrase. Version 0.3.2 (pre-stable) ships TypeScript types, requires Node >=16, and focuses on performance, claiming >1M lines/sec on benchmarks. It is designed specifically for in-browser transpilation in sandboxed environments, distinguishing itself from general-purpose transpilers like Babel, esbuild, and swc by targeting Sandpack's use cases with minimal overhead. Currently in active development with no stable release.