List unused node versions in NVM

scratch.sh

#This will list all node versions without an alias
$(nvm list | grep -v -e "->" | grep -P "(v\d+\.\d+\.\d+)" -o)

#This uses the above to find and remove node versions in NVM without an alias
for version in $(nvm list | grep -v -e "->" | grep -P "(v\d+\.\d+\.\d+)" -o)
do
  nvm uninstall $version
done

I wanted to declutter my unused node versions, thank you for this 🙏