.env.local.production

├── .env # API_BASE_URL=/api ├── .env.development # API_BASE_URL=http://localhost:4000 ├── .env.production # API_BASE_URL=https://api.myapp.com ├── .env.production.local # Override for local prod testing └── .env.local.production # Legacy fallback (if needed) You are optimizing a slow API call that only occurs in production because of caching rules.

"scripts": "build:prod-local": "NODE_ENV=production node env-loader.js && npm run build" .env.local.production

At first glance, it looks like a typo. Is it local? Is it production? Why would you need both? If you’ve stumbled upon this file or are considering implementing it, this guide is for you. ├──

console.log( ✅ Loaded env from: $nodeEnv mode ); // package.json Is it production

If you see .env.local.production on a cloud server (AWS EC2, Heroku, Vercel), you have made a deployment error. These files belong on local workstations only. How to Implement .env.local.production (The Safe Way) If your framework does not natively support this pattern, or you want full control, here is a custom implementation using Node.js and dotenv . Step 1: Install dotenv npm install dotenv Step 2: Create a load order script (e.g., env-loader.js ) const dotenv = require('dotenv'); const path = require('path'); const nodeEnv = process.env.NODE_ENV || 'development';

In the modern world of full-stack and Jamstack development, environment variables are the bedrock of security and configuration management. We all know the standard players: .env , .env.local , .env.production , and .env.test .