Rolldown

Overview

Rolldown is a Rust-based JavaScript bundler designed to replace Rollup — and eventually become Vite's production bundler. Built on OXC (the Rust toolchain behind oxlint), it aims for full Rollup API compatibility with 10-100x better performance. Currently in active development; when stable, Vite will use Rolldown instead of Rollup for production builds, unifying dev and prod bundling.

When to Use

• Rollup builds are slow on large projects
• Want to prepare for Vite's future bundler
• Building libraries where Rollup-compatible output matters
• Need faster bundling than Rollup without switching to webpack/esbuild
• Following the OXC ecosystem (oxlint → Rolldown → OXC resolver)

Instructions

Setup