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The official Next.js 16 codemod handles the easy stuff. It does not handle the stuff that actually breaks your app. Here is what it misses and how to fix it before it bites you in production.

Next.js 16 renamed middleware.ts to proxy.ts and if you did not get the memo your auth redirects and route protection just stopped working. Here is what changed, why, and how to fix it.

You upgraded to Next.js 16 and now the build is yelling about Turbopack and webpack config. Here is exactly what that warning means and how to fix it without throwing your webpack config away.

A deep exploration of the Tower of Hanoi through recurrence relations, transformation techniques, and mathematical induction. Inspired by Knuth's Concrete Mathematics.

CVE-2025-29927 let attackers bypass Next.js middleware with a single header. If your auth lives only in middleware you were wide open. Here is what happened and how to fix it properly.