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Turbopack
What it is
Turbopack is an incremental JavaScript and TypeScript bundler written in Rust and built into Next.js. It supports local development with both the Pages Router and App Router, and is the default bundler for basic Next.js use without configuration. Its incremental builds parallelize work across CPU cores, cache results at the function level, and save results to disk between runs. Lazy bundling handles only what the development server requests, which can reduce initial compile time and memory use. Support includes JavaScript, TypeScript, ECMAScript, CommonJS, ESM, JSX, Fast Refresh, and React Server Components in the App Router. It also handles global CSS, CSS Modules, nesting, PostCSS, Sass/SCSS, static image and font imports, JSON, and aliases. Native bindings are available for macOS, Windows, and Linux on x64 and ARM64; Linux supports glibc and musl. Turbopack is free and includes code splitting, tree shaking, and source maps. It does not support webpack plugins or TypeScript type checking; custom Sass functions are also unsupported.
For and against
For
- Default Next.js bundler for basic use without configuration
- Parallel builds, function-level caching, and disk persistence
- Lazy bundling can reduce initial compile time and memory use
- Supports CSS Modules, Sass/SCSS, and static asset imports
Against
- Webpack plugins are unsupported
- TypeScript type checking is not performed
- Custom Sass functions are unsupported
- Yarn Plug'n'Play and experimental URL imports are not planned
The verdict
Turbopack combines incremental builds and broad JavaScript, TypeScript, CSS, and asset support for Next.js development. Check its plugin and type-checking limits against your project needs.
Who it suits
Turbopack suits developers building with Next.js who want an incremental bundler for local development across macOS, Windows, or Linux. It may not fit projects that rely on webpack plugins or need the bundler to check TypeScript types.
Plans and prices
Turbopack
Included in Next.js; no separate price stated
Read 7 Oct 2026 · nextjs.org
On the record
- Asset and resolution support
- It supports static image and font imports, JSON imports, TypeScript path aliases, manual aliases, and custom extensions.nextjs.org · read 7 Oct 2026
- CSS and styling
- It supports global CSS, CSS Modules, CSS nesting, PostCSS, and Sass/SCSS in Next.js; custom Sass functions are unsupported.nextjs.org · read 7 Oct 2026
- Default bundler
- Turbopack is the default bundler in Next.js, with no configuration required for basic use.nextjs.org · read 7 Oct 2026
- Framework features
- It supports JSX, Fast Refresh, and React Server Components for the Next.js App Router.nextjs.org · read 7 Oct 2026
- Incremental builds
- It parallelizes work across CPU cores, caches results at the function level, and persists results to disk between runs.nextjs.org · read 7 Oct 2026
- Integration limit
- Turbopack does not support webpack plugins, although it supports webpack loaders.nextjs.org · read 7 Oct 2026
- Language support
- It supports JavaScript, TypeScript, ECMAScript, CommonJS, ESM, and Babel configuration detection in Next.js 16.nextjs.org · read 7 Oct 2026
- Lazy bundling
- It bundles only what the development server requests, which can reduce initial compile time and memory use.nextjs.org · read 7 Oct 2026
- Other limitations
- Yarn Plug'n'Play and experimental URL imports are not planned for Turbopack support in Next.js.nextjs.org · read 7 Oct 2026
- Purpose
- Turbopack is an incremental JavaScript and TypeScript bundler written in Rust and built into Next.js.nextjs.org · read 7 Oct 2026
- Support channel
- The documentation says users can attach a generated Turbopack trace file when filing a GitHub issue to help the Next.js team investigate performance or memory issues.nextjs.org · read 7 Oct 2026
- Supported systems
- Native bindings are available for macOS, Windows, and Linux on x64 and ARM64; Linux supports glibc and musl.nextjs.org · read 7 Oct 2026
- Type checking
- Turbopack does not perform TypeScript type checking; the documentation recommends running tsc --watch or using an IDE for checks.nextjs.org · read 7 Oct 2026
- Use
- It supports both the Pages Router and App Router for local development.nextjs.org · read 7 Oct 2026
