nextjs-16

Next.js 16 introduces breaking changes including async params in route segments, migration from middleware to proxy.ts, Turbopack as the default bundler, the cacheComponents flag, and updated Image component usage. Review these patterns before upgrading to prevent common mistakes.

Replace middleware.ts with proxy.ts to handle request interception in Next.js 16. Proxy.ts uses a different pattern for routing and request modification. Update your middleware logic to match the new proxy-based approach before deploying.

Yes, Next.js 16 requires async params and searchParams in route segment configurations. Update your params function to be async and handle dynamic routes correctly to align with the new routing patterns.

Next.js 16 transitions from dynamicIO to the cacheComponents flag for controlling component caching behavior. Enable cacheComponents in your configuration and update async context usage in route handlers accordingly.

Parallel routes in Next.js 16 require default.js files for each slot and proper async param handling. Structure your routes to leverage parallel rendering while following the updated segment configuration patterns.

Turbopack is the default bundler in Next.js 16 for improved build performance. Ensure your project configuration includes Turbopack settings and test your build pipeline to confirm compatibility with the new default.