[Node.js] npm스크립트 npm start

S C:\Users\cas90\Desktop\01-understanding-npm-scripts>      // 이걸누름      npm init
This utility will walk you through creating a package.json file.
It only covers the most common items, and tries to guess sensible defaults.
 
See `npm help init` for definitive documentation on these fields
and exactly what they do.
 
Use `npm install <pkg>` afterwards to install a package and
save it as a dependency in the package.json file.
 
Press ^C at any time to quit.
package name: (nodejs-complete-guide)  // 엔터
version: (1.0.0) //엔터
git repository: // 엔터
keywords: //엔터
license: (ISC)
About to write to C:\Users\cas90\Desktop\01-understanding-npm-scripts\package.json:
 
{
  "name": "nodejs-complete-guide",
  "version": "1.0.0",
  "description": "Complete Node.js Guide",
  "main": "app.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "start": "node app.js",
    "start-server": "node app.js"
  },
  "author": "Maximilian Schwarzmüller",
  "license": "ISC"
}
 
 
Is this OK? (yes)
PS C:\Users\cas90\Desktop\01-understanding-npm-scripts> 
 

npm init 

 

 

 

{
  "name": "nodejs-complete-guide",
  "version": "1.0.0",
  "description": "Complete Node.js Guide",
  "main": "app.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
 
    "start": "node app.js",   // 따로 생성해주기 기존에 있는 로직 이면 터미널에 == > npm start 하면 작동됨
 
    "start-server": "node app.js"  // 이건 일반스크립트 구문이기때문 == > npm run start-server 작동  ( npm start-server 작동xx)
 
  },
  "author": "Maximilian Schwarzmüller",
  "license": "ISC"
}
 
 
 

npm start 구문 실행

 

 

 

{
  "name": "node",
  "version": "1.0.0",
  "description": "hi",
  "main": "server.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "start": "node server.js"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "nodemon": "^2.0.16"  //노드몬 버전
  }
}
 
}
 
 
 
PS C:\Users\cas90\Desktop\node.js> npm install nodemon --save-dev
 
added 116 packages, and audited 117 packages in 7s
 
16 packages are looking for funding
  run `npm fund` for details
 
found 0 vulnerabilities
PS C:\Users\cas90\Desktop\node.js> 

npm install --save-dev                                           현재 파일에만설치

npm install -g nodemon                                       // 전체에다가 실행