If you've shipped a production system that handles structured data — API payloads, form submissions, config files, event streams — you've probably hit this exact wall: Your validation logic works beautifully in development. Tests pass. Types check out.
Source: [Dev.to](https://dev.to/plastikelectrik/why-most-type-safe-validation-fails-in-production-and-how-jev-fixes-it-4b9o)