.env.development Hot! May 2026

In many frameworks like React , Vite, and Next.js, the build tools automatically look for a .env.development file when you run a local development command (such as npm run dev ). This allows you to:

: Pointing to a local server (e.g., http://localhost:3000 ) instead of a production domain. .env.development

: Enabling "debug mode" or experimental features only while building. In many frameworks like React , Vite, and Next