NestJS Configuration Standards

Priority: P1 (OPERATIONAL)

Setup

1. Library: Use @nestjs/config.
2. Initialization: Import ConfigModule.forRoot({ isGlobal: true }) in AppModule.

Validation

• Mandatory: Validate environment variables at startup.
• Tool: Use joi or custom validation class.
• Effect: app must crash immediately if required env var (e.g., DB_URL) missing.