node npm i jwt

// Install the json web token (JWT) package from npm
const jwt = require('jsonwebtoken');

// This will install the JWT package, and any other required packages 
// such as any necessary dependencies, and save it to the package.json file.
npm install jwt

The npm install jwt command is used to install the jsonwebtoken package from the Node Package Manager (NPM). This package allows you to generate, sign, and verify Json Web Tokens (JWT) using the Node.js platform. The package is primarily used to secure APIs and web services. The JWT package is installed, along with any other required packages, and saved to the package.json file.

JSON Web Tokens (JWT) are an open, industry standard RFC 7519 method for representing claims securely between two parties. JWTs are typically used to protect APIs by authenticating and authorizing requests. The token can be used for authentication, information exchange, or both. It contains a set of claims, which are key-value pairs, with an optional signature to ensure that the claims have not been modified.

The JWT package from npm is used to generate, sign, and verify Json Web Tokens. The package provides a set of methods that allow you to generate, sign, and verify JWTs. The generate() method is used to generate a JWT token, the sign() method is used to sign a JWT, and the verify() method is used to verify a JWT.