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Card · Special Files

not-found.tsx, error.tsx, loading.tsx — route-level fallbacks.

Quick Reference

  • not-found.tsx — triggered by notFound(), scoped to route segment.
  • error.tsx — "use client", catches render errors in segment tree, exports error + reset().
  • loading.tsx — Suspense fallback for the segment while server page awaits promises.
  • Co-located with the route segment — never a global file unless truly universal.

Study Card · Chapter 01a-special-files