First NestJS application - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is NestJS?

NestJS is a framework for building efficient, scalable Node.js server-side applications using TypeScript and modern JavaScript features.

beginner

What command creates a new NestJS project?

The command nest new project-name creates a new NestJS application with a ready-to-use structure.

beginner

What is the role of a controller in a NestJS application?

A controller handles incoming requests and returns responses. It acts like a traffic controller directing requests to the right place.

beginner

How do you start the NestJS application server?

Run npm run start or nest start in the project folder to launch the server locally.

beginner

What file contains the main entry point of a NestJS app?

The main.ts file is the entry point where the NestJS application is created and started.

Which command initializes a new NestJS project?

A node create nest

B npm init nest

C nest new my-app

D nest create app

The correct command is nest new my-app to create a new NestJS project.

What does a controller do in NestJS?

A Compiles TypeScript code

B Manages database connections

C Defines application styles

D Handles incoming HTTP requests

Controllers handle incoming HTTP requests and send responses.

Which file is the main entry point of a NestJS app?

A main.ts

B app.module.ts

C controller.ts

D package.json

The main.ts file bootstraps and starts the NestJS application.

How do you start the NestJS server locally?

A nest build

B npm run start

C node server.js

D npm install

Use npm run start to launch the NestJS server.

NestJS is built on top of which platform?

A Node.js

B Ruby

C Python

D Java

NestJS runs on Node.js, using TypeScript and JavaScript.

Describe the steps to create and run your first NestJS application.

Think about commands and files involved.

Explain the role of a controller in a NestJS app and how it fits in the app structure.

Controllers are like request managers.