nextjs-16-complete-guide

To migrate Next.js from v15 to 16, update your project by installing the latest version, running codemods for automated changes, and updating next.config.ts to enable Turbopack defaults and cache components. This structured workflow ensures a smooth transition.

Yes, upgrading Next.js to 16 enforces a Node.js 20.9+ requirement. You must update your environment to this version or higher before beginning the migration to ensure compatibility with Turbopack defaults and React Compiler features.

Proxy.ts in Next.js 16 is the modern replacement for middleware.ts. Renaming middleware.ts to proxy.ts is a required code modernization step during the v16 migration to adopt the new routing and request interception architecture.

You enable React Compiler and cache components in Next.js 16 by updating next.config.ts. Setting the reactCompiler and cacheComponents flags activates these modern features, improving build times and rendering performance for SaaS apps.

Yes, you can use codemods to automate Next.js 16 migration. The migration workflow includes running codemods to handle project-wide changes such as updating async params and cookies usage, reducing manual code modifications.

Async params and cookies usage change in Next.js 16 to support cache components and React Compiler. The migration requires updating these asynchronous APIs to align with the new rendering and caching behaviors introduced in the framework.