You've been there. You pull data from a third-party API, wire it into your frontend, and something breaks. After twenty minutes of debugging, you realize the API returns user_name but your React component expects userName . Or your database column is created_at , your API response is createdAt , and your UI label says "Created At" — three representations of the same concept, none of them talking to each other. Text casing sounds trivial. It isn't. It's the kind of thing that causes subtle bugs, silently corrupts data, and makes codebases feel chaotic. Let's fix that. What Is Case Conversion, Exactly? Case conversion is the process of transforming a string from one naming convention to another. Different parts of a software stack often have different conventions — and those conventions exist for good reasons.…