Rolldown

Rolldown is a high-performance JavaScript and TypeScript bundler written in Rust, aiming to unify and replace esbuild and Rollup in build pipelines like Vite. It offers 10-30x faster builds than Rollup due to its Rust-based, parallel processing architecture. Currently at version `1.0.0-rc.16`, Rolldown is in a Release Candidate phase, signaling API stability with no planned breaking changes before the 1.0 stable release, though experimental features like minification may still have rough edges. It features a Rollup-compatible plugin API, built-in transforms for TypeScript and JSX powered by Oxc, native CJS/ESM interoperability without additional plugins, and granular code splitting akin to Webpack's `optimization.splitChunks`. Rolldown is designed to serve as Vite 8+'s default bundler but can also be used as a standalone tool, offering more control than esbuild when complex chunking is required.