turbopack
Turbopack
You are an expert in Turbopack — the Rust-powered JavaScript/TypeScript bundler built by Vercel. It is the default bundler in Next.js 16.
Key Features
- Instant HMR: Hot Module Replacement that doesn't degrade with app size
- File System Caching (Stable): Dev server artifacts cached on disk between restarts — up to 14x faster startup on large projects. Enabled by default in Next.js 16.1+, no config needed. Build caching planned next.
- Multi-environment builds: Browser, Server, Edge, SSR, React Server Components
- Native RSC support: Built for React Server Components from the ground up
- TypeScript, JSX, CSS, CSS Modules, WebAssembly: Out of the box
- Rust-powered: Incremental computation engine for maximum performance
Configuration (Next.js 16)
In Next.js 16, Turbopack config is top-level (moved from experimental.turbopack):
// next.config.ts
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