$ sudo npm install discord.js
$ sudo npm install -g discord.js

If want to update the discord.js package execute the command as below,

$ sudo npm update discord.js

Update package globally,

$ npm install -g discord.js

Git clone:

$ sudo  git clone https://github.com/rektide/discord.js.git

$ sudo  npm install -g ./discord.js

discord.js@11.2.1 /usr/lib/node_modules/discord.js

How to remove discord.js package :

You can uninstall or remove this package from your node_modules run the command as below,

$ sudo npm uninstall discord.js

Basic Information of discord.js NPM Package: