.env.development May 2026

// package.json

const z = require('zod'); const envSchema = z.object( API_URL: z.string().url(), PORT: z.string().transform(Number).default('3000'), DEBUG_MODE: z.enum(['true', 'false']).transform(v => v === 'true') ); .env.development

# settings.py import environ env = environ.Env() environ.Env.read_env(os.path.join(BASE_DIR, '.env.development')) To prevent your project from descending into "environment variable hell," follow these battle-tested principles. 1. Always Commit .env.development (With Care) This is a controversial point. You should not commit .env.production (it contains secrets). However, .env.development should be committed to your repository because it contains no real secrets—only local URLs, mock keys, and safe defaults. Committing it ensures all developers on your team have the same baseline configuration. // package

The .env.development file is a used exclusively when your application runs in a development environment. You should not commit

In the modern world of software development, the line between "it works on my machine" and production failure is often drawn by one thing: configuration . Environment variables have become the industry standard for managing this configuration, and at the heart of this practice lies a specific, powerful file: .env.development .