.env.development [hot] -

: Avoid manually changing variables every time you move from writing code locally to deploying it.

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

The .env.development file is a specialized configuration file used in modern web development to store specifically for a local development workflow. By using this file, developers can define settings like local database URLs or API keys that differ from those used in staging or production environments. What is the Purpose of .env.development? : Avoid manually changing variables every time you

: Enabling "debug mode" or experimental features only while building. By using this file, developers can define settings

: Credentials for sandbox environments or mock payment gateways (like Stripe’s test keys). Best Practices for Security and Efficiency Environment variables - Vercel

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:

: Keep local development settings separate from production secrets.