claudegoodies
Skill

nestjs-patterns

From affaan-m

NestJS architecture patterns for modules, controllers, providers, DTO validation, guards, interceptors, config, and production-grade TypeScript backends.

Documents NestJS conventions for modules, controllers, DTO validation, guards, filters, config, and testing.

Use it when

  • Structuring a NestJS app into modules, controllers, and services
  • Adding class-validator DTOs and a global ValidationPipe
  • Writing guards, interceptors, or a global HttpExceptionFilter
  • Setting up ConfigModule with env validation or Prisma/TypeORM transactions

Skip it if

  • Not using NestJS or TypeScript
  • Reference doc only, no code generation or automation
  • Assumes class-validator, Prisma/TypeORM, and Jest already in the stack

Facts

Repository
affaan-m/ECC
Status
Actively maintained
Last commit
Source file
.kiro/skills/nestjs-patterns/SKILL.md

Source preview

The instructions Claude Code reads when this skill runs.

# 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

```text
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/
```

- Keep domain code inside feature modules.
- Put cross-cutting filters, decorators, guards, and interceptors in `common/`.
- Keep DTOs close to the module that owns them.

## Bootstrap and Global Validation

```ts
async function bootstrap() {
  const app = await NestFactory.create(AppModule, { bufferLogs: true });

  app.useGlobalPipes(
    new ValidationPipe({
      whitelist: true,
      forbidNonWhitelisted: true,
      transform: true,
      transformOptions
View full source on GitHub →

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