Your project likely connects to third-party services like databases, payment gateways (Stripe), authentication providers (Auth0), or AWS. These services require API keys, secrets, and passwords.
API_KEY=your_local_api_key API_ENDPOINT=https://localhost:8080/api
:
This pattern will ignore .env.development.local , .env.production.local , and any other similarly named files.
Once you master the basics, you can leverage .env.development.local for advanced workflows. .env.development.local
.env.development.local is a configuration file used specifically to store for the development environment . .env : Defines it as an environment variable file.
: .env.local is loaded in all environments (except test), while .env.development.local is loaded only when NODE_ENV=development . If your server is not explicitly in development mode (or if NODE_ENV is misconfigured), .env.development.local may be ignored. Use .env.local for truly universal local overrides, and .env.development.local for overrides that should apply only during development. Your project likely connects to third-party services like
Unlike standard .env files, this specific file is intended to be (Git). This makes it the perfect place to store: Personal API keys (e.g., OpenAI or AWS credentials). Local database passwords. Feature flags you want to toggle only on your machine. Machine-specific paths or ports. The Order of Operations: How Overrides Work
It serves as a that takes precedence over other environment files, but crucially, it is intended to remain only on your local machine [3jop]. Why is it Necessary? Once you master the basics, you can leverage