Course Objective & Scope
Node.js projects that start quickly on Express tend to lose their structure as they grow. NestJS brings an enterprise framework to the problem with TypeScript, a module system and dependency injection. The course builds an understanding of Node.js's event loop and async model, then applies it to writing well-organised NestJS services.
Modules, controllers and providers, DTO validation (class-validator), guards, interceptors and exception filters, data access with Prisma or TypeORM, authentication with Passport/JWT and testing with Jest/Supertest are all practised hands-on. The team leaves with a NestJS project skeleton suited to its domain and a list of coding conventions.
Who Should Attend?
- Node.js developers on Express or Fastify looking for a more structured framework
- TypeScript developers moving from frontend to backend
- Tech leads defining Node.js service standards
- Prerequisite: JavaScript/TypeScript and basic async/await knowledge
Key Takeaways
- Explain the Node.js event loop and the impact of blocking code
- Build a layered service with NestJS modules, controllers and providers
- Centralise cross-cutting concerns with guards, pipes and interceptors
- Manage the data model and migrations with Prisma or TypeORM
- Write unit and e2e tests with Jest and Supertest
Curriculum
The Node.js Runtime Model
- Event loop, libuv and asynchronous I/O
- Promises, async/await and error handling
- Worker threads for CPU-intensive work
NestJS Architecture
- Modules, controllers and providers
- Dependency injection and scopes
- Config module and environment variables
The Request Lifecycle
- DTO validation with pipes and class-validator
- Guards, interceptors and exception filters
- OpenAPI (Swagger) integration
Data Access and Authentication
- Schema and migrations with Prisma or TypeORM
- Passport and JWT strategies
- Role-based authorisation
Testing, Logging and Deployment
- Unit tests with Jest, e2e tests with Supertest
- Structured logging with Pino
- Docker images and graceful shutdown
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