Regardless of the name, if a file ends in .local , it .
Are you trying to like Next.js or Vite that uses this naming convention?
Typically, the hierarchy of environment loading looks like this: (Highest priority) .env.development.local / .env.local .env.development .env (Lowest priority) .env.default.local
To understand where this file fits in, we need to break down the hierarchy of environment configuration. The Anatomy of the Filename
If multiple developers are working on a project and everyone needs a slightly different local setup, editing a shared .env.example or .env file causes merge conflicts. Using a .local variant ensures your personal configuration stays on your machine. 3. Integration with Tools like dotenv-flow Regardless of the name, if a file ends in
If you see this in a codebase, check the package.json or the initialization logic to see exactly how the project is loading its variables!
Libraries like dotenv-flow or certain Monorepo tools recognize complex naming schemes. They allow for granular overrides based on the environment (test, dev, prod) and the locality (distributable vs. local-only). Security Best Practices The Anatomy of the Filename If multiple developers
The .env.default.local file is often introduced by developers who want a way to set that differ from the project’s global defaults, but shouldn't be committed to version control. Key Use Cases 1. Overriding "Safe" Defaults for Local Work
The primary risk of files like .env.default.local is that developers assume they are "placeholders" and inadvertently include sensitive API keys or database passwords. Always ensure your .gitignore contains: .env*.local Use code with caution.