Managing Environment Variables in React Properly

Environment variables in React often look simple at first, but they can quickly become a source of bugs, leaks, and deployment confusion if handled carelessly. In modern React apps, especially with Vite or CRA, the way you name, store, and access environment variables matters just as much as the values themselves. This guide walks through the most common mistakes developers make when managing environment variables in React, explains why they happen, and shows how to set up a clean and reliable e