nestjs-patternslisted
Install: claude install-skill SilantevBitcoin/Base-system-Claude
# 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: { enableImplicitConversion: true },
}),
);
app.useGlobalInterceptors(new ClassSerializerI