rolldown
Rolldown is a Rust-based JavaScript/TypeScript bundler designed as a drop-in, Rollup-compatible replacement, built for speed and intended to become the unified bundler powering the Vite ecosystem.
Embed badge
[](https://opensources.dev/resource/rolldown)MITPermissive — free to use in commercial and proprietary software, with attribution.View license →
Production readiness
4/5- Actively maintainedCommits in the last 6 months
- No known vulnerabilitiesNot yet scanned
- Clear, usable licenseMIT (permissive)
- Proven adoptionWidely used
- Has documentationDocumentation indexed
cargo add rolldownOur analysis
Rolldown is a high-performance JavaScript/TypeScript module bundler written in Rust, aiming for Rollup API compatibility while delivering native-speed builds. It is being developed to become the future bundling engine of Vite, unifying its currently split esbuild (dev) and Rollup (prod) toolchain.
When to use rolldown
Use it when you want Rollup-compatible bundling with significantly faster build performance, or when building tooling that targets the Vite ecosystem and wants to track its future bundler. Good for projects already on Rollup plugins/config that want a faster drop-in path.
When not to
Avoid it for production-critical pipelines that need long-term stability today, since it is still maturing and not yet feature-complete relative to Rollup. If you need a battle-tested bundler now, stick with Rollup, esbuild, or webpack. It is also not relevant outside the JS/TS build toolchain.
Strengths
- Native Rust implementation gives major speed gains over JS-based Rollup
- Designed for Rollup API/plugin compatibility, easing migration
- Backed by the Vite/VoidZero team with a clear roadmap to unify Vite's bundling
- Strong community traction and momentum
Trade-offs
- Still pre-1.0 / under active development with potential breaking changes
- Not yet fully feature-parity with Rollup; plugin compatibility gaps exist
- Smaller real-world production track record compared to established bundlers
- Documentation and ecosystem still catching up
Maturity
Actively developed and well-funded with a large GitHub following, but still early-stage and not yet considered fully production-stable; its trajectory is closely tied to Vite adoption.
Credits
The development-guide section is deeply inspired by rustc-dev-guide. We partially copies texts from it and follows the same MIT license.