nestjs-best-practices

40 NestJS best practices organized by priority across architecture, dependency injection, security, and performance. Comprehensive best practices guide for NestJS applications. Contains 40 rules across 10 categories, prioritized by impact to guide automated refactoring and code generation. Reference these guidelines when: Read individual rule files for detailed explanations and code examples: Each rule file contains: For the complete guide with all rules expanded: AGENTS.md - Covers 10 rule categories from critical (architecture, DI) to low-medium (DevOps), each with specific, actionable patterns and anti-patterns - Includes rules for modules, controllers, services, error handling, authentication, database optimization, testing, and microservices - Each rule provides explanation, incorrect vs. correct code examples, and context for when to apply - Designed to guide automated refactoring and code generation in production NestJS applications - Writing new NestJS modules, controllers, or services - Implementing authentication and authorization - Reviewing code for architecture and security issues - Refactoring existing NestJS codebases - Optimizing performance or database queries - Building microservices architectures - arch-avoid-circular-deps - Avoid circular module dependencies - arch-feature-modules - Organize by feature, not technical layer - arch-module-sharing - Proper...