check_node_project.fish

function check_node_project \
  --description 'Display project info if we changed to a Node project directory' \
  --on-variable dirprev
  
  # Don't display project info if:
  status --is-command-substitution; # this is command substitution \ 
    or not test -f ./package.json; # there's no package.json \ 
    or [ (count $dirprev) -lt 3 ]; # we've just opened a new Terminal session \ 
    or [ (count (string split $PWD $dirprev[-1])) -eq 2 ]; # we came from a lower directory in the hierarchy \ 
    and return
  
  # Displays project name, version, and a list of bin files and npm scripts.
  node-project.js
end