Node Package Manager (npm) is a tool that comes with every Node.js installation. It provides a set of reusable components that you can install from an online repository called the npm registry. npm also consists of a command-line client that interacts with the npm registry.
npm doesn't vet submissions to the npm registry, meaning that packages in the registry can be insecure or malicious. It relies on users to report packages that violate their policies.
npm makes it easy to install packages from the npm registry. From your command-line interface (CLI), you can install a package called express by running the following command:
npm install express
Once you install a package, you can require the files from the package by adding the following to your code:
var express = require('express');
The backend is the part of a software program that end users can’t see, sometimes referred to as the data access layer. It includes the...
A repository (or repo) is a central location where files, data, software, and other content are stored and maintained.