With this file in place, the workflow is automated:
# Server Configuration PORT=3000 HOST=localhost
[Lowest Priority] .env ▲ .env.default │ .env.development │ .env.default.local ◀── Establishes the safe local baseline │ .env.local ◀── Custom developer overrides [Highest Priority] Shell Environment / Process Variables (e.g., export PORT=80) .env.default.local
The .env.default.local file represents a specific pattern in the broader ecosystem of dotenv files. While the traditional .env file is widely used to store environment variables, the .env.default.local pattern offers a more structured approach to configuration management.
Specific variables intended strictly for the development build pipeline. With this file in place, the workflow is
Using libraries like @gerkirill/config , you can validate your configuration at startup:
To prevent accidental leaks, ensure that your .gitignore file explicitly targets all variations of local environment files. Add the following block to your project root: Using libraries like @gerkirill/config , you can validate
– A fallback file containing default values for the application.
You can generate .env.default.local automatically from .env during project setup:
Local overrides for secrets and sensitive machine-specific data. .env.example A template showing which variables need to be defined. Committed .env.default.local