.env.development.local Page
Create .vscode/extensions.json :
Create React App has built-in support for .env files without any additional configuration. To use .env.development.local in a CRA project:
In Vite, variables must be prefixed with VITE_ to be exposed to client-side code. They are accessed via import.meta.env instead of process.env .
The .env.development.local file is a powerful tool for creating a tailored, secure development environment. By allowing developers to customize their local setups without risking the exposure of secrets or disrupting the shared codebase, it ensures that the development workflow remains both flexible and robust. .env.development.local
This layered loading mechanism is consistently implemented across major frameworks, with slight variations:
# --- DATABASE CONFIGURATION --- # Local database connection (different from staging/production) DATABASE_URL="postgresql://user:password@localhost:5432/my_dev_db" # --- API KEYS & SECRETS --- # Personal API keys for local testing STRIPE_SECRET_KEY="sk_test_51Mz..." AWS_SECRET_ACCESS_KEY="your-local-dev-key" AUTH_SECRET="a-very-long-random-string-for-local-auth" # --- APPLICATION SETTINGS --- # Local API endpoint overrides NEXT_PUBLIC_API_URL="http://localhost:4000/api" DEBUG=true # --- THIRD-PARTY SERVICES --- # Local-only sandbox credentials MAILTRAP_USER="your_mailtrap_user" MAILTRAP_PASS="your_mailtrap_password" Use code with caution. Copied to clipboard Key Rules for This File
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The Guardian of the Local Machine: Understanding .env.development.local
"label": "Load .env.development.local", "type": "shell", "command": "set -a; source .env.development.local; set +a", "problemMatcher": []
DATABASE_URL=mongodb://localhost:27017/bobs-local-db Create
Below is a draft structure containing common variables for local development. Replace the placeholder values with your actual local credentials.
Developer A might run a local PostgreSQL database on port 5432 .
She hadn't touched it in months. It was considered dirty — local-only, never committed, full of experimental keys and mock services. A file with no dignity. The technical equivalent of a sticky note on a server rack. Copied to clipboard Key Rules for This File
Your team might share a .env.development file containing public API endpoints or shared development databases. However, your personal local environment might require unique credentials.