00 introduction

Nest.js is a framework for building efficient, scalable Node.js server-side applications.

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npm i -g @nestjs/cli

nest new project-name

This will create a new project named project-name. And it will install all dependencies in node_modules folder.

At the same time, it will create a src folder, which contains the source code of the project.

src
├── app.controller.ts
├── app.controller.spec.ts
├── app.module.ts
├── app.service.ts
├── app.service.spec.ts
├── main.ts

file name	description
app.controller.ts	The main controller of the application
app.controller.spec.ts	The test file of the main controller
app.module.ts	The main module of the application
app.service.ts	The main service of the application
app.service.spec.ts	The test file of the main service
main.ts	The entry file of the application, it will create a Nest application instance use `NestFactory.create` method.

npm run start

Open your browser and visit http://localhost:3000