what is npm i? code example

Example 1: what is npm

npm is a package manager for the JavaScript programming language.

It is the default package manager for the JavaScript runtime environment Node.js

It consists of a command line client, also called npm, and an online database
of public and paid-for private packages, called the npm registry.

Example 2: what is npm

npm is two things: first and foremost, 
1. it is an online repository for the publishing of open-source Node.js projects;
2. second, it is a command-line utility for interacting with said repository
that aids in package installation, version management, and
dependency management.

Example 3: install an npm package

npm install package-name

To save as a dependency:
npm install package-name --save