| name | nextjs-turbopack |
| description | Next.js 16+ Turbopack development patterns -- Rust-based bundler for faster dev startup, HMR, file-system caching, and bundle analysis. |
| origin | ECC |
Next.js Turbopack
Next.js 16+ defaults to Turbopack for local development, a Rust-based incremental bundler that significantly accelerates startup times and hot module replacement (HMR).
When to Use
- Day-to-day Next.js development (Turbopack is the default for
next dev)
- Debugging slow development builds
- Optimizing bundle size for production
- Migrating from webpack-based Next.js setups
Key Concepts
Development
Turbopack is the default bundler for next dev in Next.js 16+. It provides significantly faster cold start and HMR, especially in large applications. File-system caching means restarts are much faster (e.g., 5-14x on large projects). Cache data resides in the .next directory without additional configuration.
Legacy Option
Webpack remains available if you encounter Turbopack compatibility issues or depend on webpack-specific plugins. Disable Turbopack via command-line flags.
Production
Build behavior depends on your Next.js version; consult official documentation for guidance on production bundling.
Technical Advantages
- Rust-based incremental computation for fast rebuilds
- File-system caching so restarts are near-instant
- Native TypeScript and JSX support without extra configuration
- Optimized HMR that only recompiles changed modules
Bundle Analysis
An experimental Bundle Analyzer (Next.js 16.1+) helps identify performance bottlenecks and oversized dependencies.
Best Practices
- Maintain current Next.js 16.x versions for stable Turbopack functionality
- Verify Turbopack is active and cache is not being unnecessarily cleared if experiencing slow development builds
- Apply official bundle analysis tools for production optimization needs
- Prioritize App Router and server components for best results
- If a plugin is incompatible with Turbopack, check for updates or alternatives before falling back to webpack
