.env.default.local ❲95% INSTANT❳

Based on industry best practices, here's the recommended approach:

Now you develop the new dashboard WITHOUT waiting for a remote toggle. When you commit code, you don't accidentally commit the "on" flag, forcing it on for everyone.

This strategy works because , while local overrides remain private to each developer . A new developer can clone the repository and immediately have sensible defaults to work with. They only need to create a .env.local file for secrets or machine-specific customizations, which they never need to commit. .env.default.local

export class Environment @IsPort() API_PORT!: number;

.env.default # Base defaults (committed) .env # Environment-agnostic overrides .env.local # Local overrides (ignored) .env.development # Development environment .env.development.local # Development local overrides (ignored) .env.staging # Staging environment .env.production # Production environment .env.production.local # Production local overrides (ignored) Based on industry best practices, here's the recommended

To understand where this file fits in, we need to break down the hierarchy of environment configuration. The Anatomy of the Filename

: Default overrides for local testing (Often committed or created by a setup script). A new developer can clone the repository and

The dotenv-flow npm package natively supports layered environment files. Install the package: npm install dotenv-flow Use code with caution.

Most frameworks don't support this out of the box. You need a custom loader. Here is how you implement the hierarchy in different ecosystems.