NPM : Node package Manager

- Packages for external modules.
- Bits of reusable codes that is written by someone.

1) cd <folderName>
2) npm init : Initialised npm and also creates the package.json file
3) npm install <packageName1> <packageName2> : Install the package name using npm
4) npm install -g nodemon : install nodemon globally using npm
5) npm install body-parser: 
6) npm install ejs:

Package.json file :-
Description of all the npm packages inside your file