Fixing “Property 'user' does not exist on type 'Request'” in Express + TypeScript
If you’ve ever tried adding req.user inside Express middleware while using TypeScript, you’ve probably run into this error: Property ' user ' does not…
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Feature Flags in Node.js: Express and Fastify Guide
This was originally published on rollgate.io/blog/feature-flags-nodejs . Why Feature Flags in Node.js? Node.js powers a huge slice of production backe…
How I Built a Modular Multiplayer Game Engine with Node.js and Socket.io
I recently completed a project called GuessGrid, a real-time "Guess the Secret" game. While the frontend is straightforward, the backend was a deep di…
Hardening an Express API: URL Validation, Error Handling, and Tests in One Session
I'm building repo-skill-advisor , a precision skill recommendation engine for GitHub repositories. Today I hardened the HTTP layer by closing three se…