In modern software development, applications often need different settings depending on where they are running (e.g., your laptop vs. a live server). The .env.development file allows you to define variables like local database URLs, API keys for testing, or debug flags that should only be active while you are coding. Why use it?
.env.development allows you to toggle features like ENABLE_SOURCE_MAPS=true without risking a performance hit in production. .env.development
# .env.development PORT=3000 DATABASE_URL=postgres://localhost:5432/my_dev_db API_KEY=dev_abc123_mock_key DEBUG=true Use code with caution. Copied to clipboard 4. How it is Loaded In modern software development
: Credentials for sandbox environments or mock payment gateways (like Stripe’s test keys). Best Practices for Security and Efficiency Environment variables - Vercel API keys for testing
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