Nextjs 16 Complete Guide

This is your reference when working with Next.js 16's major architectural shifts. The biggest wins are Turbopack as the default bundler (2-5× faster builds, 10× faster Fast Refresh), explicit caching with "use cache" directives instead of the confusing implicit behavior from v15, and the middleware.ts to proxy.ts migration that clarifies the network layer. It also covers React Compiler going stable and the new DevTools MCP integration for AI-assisted debugging. Use this when migrating from v15 or starting fresh projects. The breaking changes section is honest about what actually needs updating, mostly the Node.js version bump to 20.9+ and the proxy.ts rename. The comparison tables make it easy to see what changed and why it matters for real applications.

Install to Claude Code

npx -y skills add fernandofuc/nextjs-claude-setup --skill nextjs-16-complete-guide --agent claude-code