Before you pay someone to fix your Next.js bug: a 15-minute reproducibility checklist

Most “small bugs” become expensive before anyone opens the editor. The failure is described loosely, the environment is unknown, and the first hour disappears into reconstructing what happened. This checklist turns a vague report into a repairable unit. It works for React, Next.js, and TypeScript defects. Record the versions that can change behaviour: Node: Package manager + version: Next.js / React / TypeScript: Browser or runtime: OS, if relevant: Commit SHA: Keep the lockfile. “Latest” is not