NodeJs

Nodejs_classes

Install nodejs

apt-get install -y nodejs 

Install npm

apt-get install -y npm

Install yarn

npm install -g yarn

############################### Yarn Steps ###############################

Step 1: mkdir src

Step 2: cd src && vim index.js

Step 3: yarn install

Step 4: yarn init <== To create package.json

	yarn init v1.22.15
	question name (test): 
	question version (1.0.0): 
	question description: 
	question entry point (index.js): 
	question repository url: 
	question author: 
	question license (MIT): 
	question private: 
	success Saved package.json
	Done in 10.51s.

Step 5:

Add below steps as which scripts need to execute.

  "scripts": {
      "test": "echo \"Error: no test specified\" && exit 1",
      "start": "node src/index.js",
      "build": "npm build"
    }

After add it should looks like.

	{
	  "name": "paas",
	  "version": "1.0.0",
	  "description": "this is for test ",
	  "main": "index.js",
	  "scripts": {
	    "test": "echo \"Error: no test specified\" && exit 1",
	    "start": "node src/index.js",
	    "build": "npm build"
	  },
	  "license": "MIT"
	}

Step 6: Execute command accoring to scripts declared under scripts.

        # yarn start

Or

       # yarn build