Modules, Controllers & Services. NestJS Architecture. NestJS organizes code into Modules. Each module groups related Controllers (handle HTTP) and Providers/Services (business logic). The root AppModule bootstraps the ap…
ReadDI, Guards & Interceptors. Dependency Injection. // Standard injection via constructor @Injectable() export class OrdersService { constructor( private readonly usersService: UsersService, private readonly emailService: E…
ReadDatabase & Auth. TypeORM Setup. // app.module.ts import { TypeOrmModule } from '@nestjs/typeorm'; @Module({ imports: [ TypeOrmModule.forRootAsync({ imports: [ConfigModule], useFactory: (config: ConfigService) => ({ type:…
ReadNestJS Interview Questions. Q: What is NestJS and what problem does it solve?. NestJS is a Node.js framework for building scalable server-side applications. It solves the lack of structure in vanilla Express by providing…
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