Steps

• Install nvm
• nvm won't work with fish
• Install bass and fish-nvm

omf install https://github.com/fabioantunes/fish-nvm
omf install https://github.com/edc/bass

See this for other install options.

• Install the desired node version and set it as default

nvm install 18.12.1
nvm alias default 18.12.1

Links:

• https://github.com/FabioAntunes/fish-nvm#install
• https://stackoverflow.com/a/69448339/7358595
• https://github.com/nvm-sh/nvm#installing-and-updating
• https://github.com/nvm-sh/nvm#set-default-node-version
• https://eshlox.net/2019/01/27/how-to-use-nvm-with-fish-shell