npm
Node.js is a server-side JavaScript run-time environment, while npm is a Node.js package manager.
Version check
npm --version
nodejs --version
Install OS packaged version
Current version on Mint of npm is 3.5.2 and it come with Node.js version v8.10.0.
sudo apt install npm
Install recent release
To upgrade to the most recent release, just use npm
sudo npm install -g npm@next