Ubuntu Linux/Mac

The module n makes version-management easy:

npm install n -g

For the latest stable version:

n stable

For the latest version:

n latest

Debian 10

Upgrade older versions of node and npm on Debian 10 as follows:

sudo su -c 'curl -sL https://deb.nodesource.com/setup_18.x | bash -'
sudo apt-get install nodejs -y
sudo apt update
sudo apt upgrade
sudo npm install -g [email protected]
node --version
npm --version

Note: Replace setup_18 with the latest long-term support release.

Windows

just reinstall node from the .msi in Windows from the node website.