Nestjs Patterns

This is a solid reference for building production NestJS backends the right way. It covers the full stack: module organization, DTO validation with class-validator, guards and interceptors, environment config validation at boot, and keeping controllers thin while services own business logic. The structure guidance is opinionated but practical, pushing cross-cutting concerns into common folders and keeping DTOs close to their modules. You'll want this active when setting up new NestJS projects or refactoring messy ones, especially if you're tired of inconsistent error handling or controllers that do too much. The testing and transaction patterns alone save you from common pitfalls.

skills.sh installs: 6.1K
GitHub stars: 300.3K
last updated: Aug 21, 2026

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Install

$ npx -y skills add affaan-m/ecc --skill nestjs-patterns --agent claude-code

Installs into .claude/skills of the current project.

Files

NestJS Development Patterns

Production-grade NestJS patterns for modular TypeScript backends.

When to Activate

Building NestJS APIs or services
Structuring modules, controllers, and providers
Adding DTO validation, guards, interceptors, or exception filters
Configuring environment-aware settings and database integrations
Testing NestJS units or HTTP endpoints

Project Structure

src/
├── app.module.ts
├── main.ts
├── common/
│   ├── filters/
│   ├── guards/
│   ├── interceptors/
│   └── pipes/
├── config/
│   ├── configuration.ts
│   └── validation.ts
├── modules/
│   ├── auth/
│   │   ├── auth.controller.ts
│   │   ├── auth.module.ts
│   │   ├── auth.service.ts
│   │   ├── dto/
│   │   ├── guards/
│   │   └── strategies/
│   └── users/
│       ├── dto/
│       ├── entities/
│       ├── users.controller.ts
│       ├── users.module.ts
│       └── users.service.ts
└── prisma/ or database/