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Omar-Obando
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nestjs

Guide NestJS TypeScript backend development with modular architecture and decorator-driven patterns.

44|9|Updated May 7, 2026
Search Tags:#typescript#dependency injection#nestjs#interceptors#request lifecycle#jest testing#guards and pipes
One-click install
npx skills add https://github.com/Omar-Obando/qwen-orchestrator --skill nestjs-omar-obando
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: nestjs
Source: https://github.com/Omar-Obando/qwen-orchestrator/tree/main/skills/nestjs
Command: npx skills add https://github.com/Omar-Obando/qwen-orchestrator --skill nestjs-omar-obando

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

NestJS development often stalls when teams need consistent, scalable patterns for modules, dependency injection, validation, and the request lifecycle.

Core Features & Use Cases

  • Modular architecture & DI: Structure feature modules cleanly with controllers/services/providers and proper exports.
  • Request lifecycle mastery: Correctly apply Guards, Pipes, Interceptors, and exception handling order to achieve secure, validated APIs.
  • Enterprise-ready scaffolding: Use Nest CLI schematics to generate modules/controllers/guards/pipes/interceptors and accelerate implementation.
  • Testing guidance: Write unit and e2e tests with Jest to keep behavior reliable as the codebase grows.

Quick Start

Use the nestjs skill to design a module with controllers, DTO validation, global guards, and a validation pipe for consistent request handling in a TypeScript backend.

Frequently Asked Questions about nestjs

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I structure scalable NestJS modules with dependency injection?▼

Structure scalable NestJS modules by organizing feature modules cleanly with controllers, services, and providers, then explicitly exporting providers to enable proper dependency injection across your TypeScript application boundaries.

What is the execution order of Guards, Pipes, and Interceptors in the NestJS request lifecycle?▼

The NestJS request lifecycle executes Middleware first, followed by Guards, Interceptors (pre-request), Pipes, the controller handler, Interceptors (post-request), and finally Exception Filters for secure, validated APIs.

How do I set up global validation using ValidationPipe and class-validator DTOs in NestJS?▼

Configure global request validation by applying ValidationPipe application-wide and defining DTO classes with class-validator decorators, ensuring incoming data is automatically validated and transformed before reaching your NestJS controllers.

Can I use Nest CLI schematics to generate controllers, guards, and interceptors?▼

Yes, Nest CLI schematics accelerate enterprise-ready scaffolding by generating modules, controllers, guards, pipes, and interceptors automatically, ensuring consistent decorator-driven patterns across your scalable NestJS application architecture.

How do I write unit and end-to-end tests for NestJS applications using Jest?▼

Write deterministic unit and e2e tests for NestJS using Jest to verify controller behavior, provider logic, and request lifecycle integration, keeping your TypeScript backend microservices reliable as the codebase grows.

When should I use APP_GUARD for authentication and authorization in NestJS?▼

Register APP_GUARD globally in your NestJS application when you need consistent authentication and authorization enforcement across all routes, applying guard-driven security patterns before the request reaches Pipes or Interceptors.

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