.env.development.local [cracked] Now

: Variables here only load when the application is running in "development" mode (e.g., via npm run dev or npm start ). The Hierarchy of .env Files

: Safely enable experimental features on your machine without forcing them on other developers. Best Practices Environment variables - Vercel .env.development.local

if (missing.length) console.error( ❌ Missing required env vars: $missing.join(', ') ); process.exit(1); : Variables here only load when the application

(Specific to you and the development mode) .env.development.local