// Order of precedence (lowest to highest priority) const files = [ .env , .env.$nodeEnv , .env.local , .env.$nodeEnv.local , .env.local.$nodeEnv // Support for the inverted pattern ];
console.log( ✅ Loaded env from: $nodeEnv mode ); // package.json .env.local.production
NODE_ENV=production npm run build But you cannot use your live production database or live payment API keys on your laptop. You need a local "production-like" environment. // Order of precedence (lowest to highest priority)
# .env.local.production (not in Git) DATABASE_URL="postgresql://localhost:5432/prod_mirror" STRIPE_SECRET_KEY="sk_test_localDebugKey" NEXT_PUBLIC_ANALYTICS_ID="debug-123" This file allows you to simulate a production environment without touching real production secrets. Sometimes, the process of building your application (minification, bundling, tree-shaking) requires specific flags. For example, you might enable source maps only in local production builds, but not in real production. tree-shaking) requires specific flags. For example