nextjs-turbopack

To speed up slow Next.js development startup, use Turbopack for incremental bundling and file-system caching. This Rust-based bundler reduces cold start times and reuses prior build work to make restart cycles dramatically faster.

Yes, Next.js 16 uses Turbopack as the default development bundler. It automatically falls back to webpack only when encountering bugs or webpack-only dev plugins during your local development workflow.

Turbopack improves hot module replacement by using an incremental Rust-based bundler. This architecture speeds up the development feedback loop, making hot updates more responsive across large applications.

Turbopack targets Next.js development workflows to optimize cold starts and HMR. You must maintain awareness of production build behavior, as the current optimization scope focuses on day-to-day iteration rather than production bundling.

You should choose webpack over Turbopack when you encounter specific bugs or rely on webpack-only dev plugins. Otherwise, Turbopack is the default bundler in Next.js 16+ for faster incremental bundling.