Node.js v13.x:
# Using Ubuntu
curl -sL https://deb.nodesource.com/setup_13.x | sudo -E bash -
sudo apt-get install -y nodejs
# Using Debian, as root
curl -sL https://deb.nodesource.com/setup_13.x | bash -
apt-get install -y nodejs
https://github.com/nodesource/distributions/blob/master/README.md#debinstall