Hi,
Under ubuntu 19.04 alias Disco,
curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -
to install nodejs version from the 10.x branch.
So we get
nlb@disco:~/audio/open-stage-control$ npm --version
6.4.1
nlb@disco:~/audio/open-stage-control$ node --version
v10.15.2
nlb@disco:~/audio/open-stage-control$
But i had to install this package for the installation to work via sources.
sudo apt install libgconf-2-4
npm start
works but with this message Failed to load module "canberra-gtk-module"
it’s “grave docteur ?”