NestJS 처음 시작하기

$ npm i -g @nestjs/cli
added 251 packages, and audited 252 packages in 11s

41 packages are looking for funding
  run `npm fund` for details

found 0 vulnerabilities

$ nest
nest
Usage: nest <command> [options]

Options:
  -v, --version                                   Output the current version.
  -h, --help                                      Output usage information.

Commands:
  new|n [options] [name]                          Generate Nest application.
  build [options] [app]                           Build Nest application.
  start [options] [app]                           Run Nest application.
  info|i                                          Display Nest project details.
  add [options] <library>                         Adds support for an external library to your project.
  generate|g [options] <schematic> [name] [path]  Generate a Nest element.
    Schematics available on @nestjs/schematics collection:
      ┌───────────────┬─────────────┬──────────────────────────────────────────────┐
      │ name          │ alias       │ description                                  │
      │ application   │ application │ Generate a new application workspace         │
      │ class         │ cl          │ Generate a new class                         │
      │ configuration │ config      │ Generate a CLI configuration file            │
      │ controller    │ co          │ Generate a controller declaration            │
      │ decorator     │ d           │ Generate a custom decorator                  │
      │ filter        │ f           │ Generate a filter declaration                │
      │ gateway       │ ga          │ Generate a gateway declaration               │
      │ guard         │ gu          │ Generate a guard declaration                 │
      │ interceptor   │ itc         │ Generate an interceptor declaration          │
      │ interface     │ itf         │ Generate an interface                        │
      │ middleware    │ mi          │ Generate a middleware declaration            │
      │ module        │ mo          │ Generate a module declaration                │
      │ pipe          │ pi          │ Generate a pipe declaration                  │
      │ provider      │ pr          │ Generate a provider declaration              │
      │ resolver      │ r           │ Generate a GraphQL resolver declaration      │
      │ service       │ s           │ Generate a service declaration               │
      │ library       │ lib         │ Generate a new library within a monorepo     │
      │ sub-app       │ app         │ Generate a new application within a monorepo │
      │ resource      │ res         │ Generate a new CRUD resource                 │
      └───────────────┴─────────────┴──────────────────────────────────────────────┘

$ nest new our-nestjs
⚡  We will scaffold your app in a few seconds..

? Which package manager would you ❤️  to use? (Use arrow keys)
❯ npm
  yarn
  pnpm

⚡  We will scaffold your app in a few seconds..

? Which package manager would you ❤️  to use? npm
CREATE our-nestjs/.eslintrc.js (663 bytes)
CREATE our-nestjs/.prettierrc (51 bytes)
CREATE our-nestjs/README.md (3340 bytes)
CREATE our-nestjs/nest-cli.json (171 bytes)
CREATE our-nestjs/package.json (1941 bytes)
CREATE our-nestjs/tsconfig.build.json (97 bytes)
CREATE our-nestjs/tsconfig.json (546 bytes)
CREATE our-nestjs/src/app.controller.spec.ts (617 bytes)
CREATE our-nestjs/src/app.controller.ts (274 bytes)
CREATE our-nestjs/src/app.module.ts (249 bytes)
CREATE our-nestjs/src/app.service.ts (142 bytes)
CREATE our-nestjs/src/main.ts (208 bytes)
CREATE our-nestjs/test/app.e2e-spec.ts (630 bytes)
CREATE our-nestjs/test/jest-e2e.json (183 bytes)

✔ Installation in progress... ☕

🚀  Successfully created project our-nestjs
👉  Get started with the following commands:

$ cd our-nestjs
$ npm run start


                          Thanks for installing Nest 🙏
                 Please consider donating to our open collective
                        to help us maintain this package.


               🍷  Donate: https://opencollective.com/nest

$ cd our-nestjs
$ npm run start

> our-nestjs@0.0.1 start
> nest start

[Nest] 23176  - 2022-12-31, 4:23:39 p.m.     LOG [NestFactory] Starting Nest application...
[Nest] 23176  - 2022-12-31, 4:23:39 p.m.     LOG [InstanceLoader] AppModule dependencies initialized +16ms
[Nest] 23176  - 2022-12-31, 4:23:39 p.m.     LOG [RoutesResolver] AppController {/}: +2ms
[Nest] 23176  - 2022-12-31, 4:23:39 p.m.     LOG [RouterExplorer] Mapped {/, GET} route +1ms
[Nest] 23176  - 2022-12-31, 4:23:39 p.m.     LOG [NestApplication] Nest application successfully started +0ms

$ curl http://localhost:3000
Hello World!%

import { NestFactory } from "@nestjs/core";
import { AppModule } from "./app.module";

async function bootstrap() {
  const app = await NestFactory.create(AppModule);
  await app.listen(3000);
}
bootstrap();

import { Module } from "@nestjs/common";
import { AppController } from "./app.controller";
import { AppService } from "./app.service";

@Module({
  imports: [],
  controllers: [AppController],
  providers: [AppService],
})
export class AppModule {}

import { Controller, Get } from "@nestjs/common";
import { AppService } from "./app.service";

@Controller()
export class AppController {
  constructor(private readonly appService: AppService) {}

  @Get()
  getHello(): string {
    return this.appService.getHello();
  }
}

import { Injectable } from "@nestjs/common";

@Injectable()
export class AppService {
  getHello(): string {
    return "Hello World!";
  }
}