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NestJS Architectural Patterns

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API Development

Implements production-ready NestJS patterns for modular TypeScript backends, including DTO validation, guards, and clean architecture.

This skill provides Claude with specialized knowledge for architecting and developing high-performance NestJS applications using domain-driven design principles. It offers comprehensive guidance on organizing modules, controllers, and providers while enforcing best practices for DTO validation, global interceptors, and environment-aware configuration. Whether building a new API or refactoring an existing service, it ensures consistency across authentication strategies, error handling, and unit testing using the NestJS testing utility.

Key Features

01Modular domain-driven project structuring
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03Environment-validated configuration management and database integration
04Standardized exception filters for consistent error responses
05Global DTO validation using class-validator and ValidationPipe
06Secure JWT authentication and Role-Based Access Control (RBAC) patterns

Use Cases

01Implementing standardized security and logging across microservices
02Building scalable and maintainable RESTful APIs with NestJS
03Refactoring monolithic TypeScript backends into clean, modular architectures