.env.development.local

: It is strictly for local use and should never be committed to version control (Git).

: It is designed to override default settings found in .env or .env.development . .env.development.local

The .env.development.local file is a specialized environment variable file used to store configuration settings and sensitive information (like API keys or database credentials) specifically for a developer's during the development phase . Its primary characteristics include: : It is strictly for local use and

: Safely enable experimental features on your machine without forcing them on other developers. Best Practices Environment variables - Vercel .env.development.local

By using .env.development.local , a developer can test features with their own unique database string or API key without affecting the rest of the team's shared .env.development file. Key Use Cases