install nodejs ubuntu 19.04

sudo bash nodesource_setup.sh

cd ~
curl -sL https://deb.nodesource.com/setup_10.x -o nodesource_setup.sh

sudo apt install curl
curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -
sudo apt-get update
sudo apt-get install nodejs
nodejs -v
npm -v