NestJS Basics

Implementing ToDo App with NestJS

Path in CodeSignal

• NestJS Basic (Course 497)
  • Unit 1: Understanding NestJS
  • Unit 2: Controllers in NestJS
  • Unit 3: Providers in NestJS
  • Unit 4: Modules in NestJS
  • Unit 5: Generating Components Using the CLI
• Building a To-Do RSET API with NestJS (Course 498)
  • Unit 1: Set Up GET Queries
  • Unit 2: Create a ToDo Item Provided from the Request Body
  • Unit 3: Implementing Update and Delete Handlers
  • Unit 4: Enhancing the API with Filters and Specific Modifiers
  • Unit 5: Returning 404 for Missing To-Do Items
• Adding Enterprise Features to your NestJS App (Course 499)
  • Unit 1: Integrating MongoDB
  • Unit 2: Transforming Data Store Objects to DTOs
  • Unit 3: Configuring a Middleware and adding Validation
  • Unit 4: Error Handling
• Securing Your NestJS App (Course 500)
  • Unit 1: Creating Users with Encrypted Passwords via Bcrypt in NestJS
  • Unit 2: Integrating JWT for Authentication in NestJS
  • Unit 3: Securing Endpoints with JWT Guards
  • Unit 4: Associating ToDos with Users in NestJS

Data Transfer Object (DTO)

• object that carries data between processes
• motivation for use:
  • communication between processes usually done resorting to remote interfaces (e.g. web services) where each call is expensive operation
  • because majority of cost of each of those calls is related to round-trip between client and server, one way of reducing number of calls is to use object (a DTO) that aggregates data that otherwise would've been transferred by several calls

Citation