Tab completion for the npx command

README.md

complete_npx

Bash tab completion for the npx command

Usage

Save complete_npx in your home folder and then source it on your .bash_profile with:

. ~/complete_npx.sh

complete_npx.sh

no_modules() {
	local project_root=$1

	[ ! -r "$project_root/node_modules" ]
}

complete_npx() {
	local project_root=$(pwd -P)

	while no_modules "$project_root"; do
		if [ "$project_root" = '/' ]; then
			return 1
		fi

		project_root=$(dirname "$project_root")
	done

	local words=$(find "$project_root/node_modules/.bin" | tail -n +2 | xargs -L 1 -- basename)
	local current_word=${COMP_WORDS[COMP_CWORD]}

	COMPREPLY=( $(compgen -W "${words[@]}" -- "$current_word" ) )
}

complete -F complete_npx npx

Brilliant, just what I neeeded!

I suggest changing last part of L19 from
xargs basename
to
xargs basename -a
as some distros (including mine) require it to work properly with multiple suggestions

Amazing! also thanks @jmarucha. Needed to add xargs basename -a for osx.

Thanks folks, I've updated the code!
It was never meant to pass multiple arguments at once to basename, so I added a flag to xargs to invoke basename line by line instead.

thank you, great job!

Cleaner solution is:

_npx() {
  local dir=$(pwd -P)
  while [[ -n "$dir" ]]; do
    if [[ ! -d $dir/node_modules/.bin ]]; then
      dir=${dir%/*}
      continue
    fi
    local execs=( `cd $dir/node_modules/.bin; find -L . -type f -executable` )
    execs=( ${execs[@]/#.\//} )
    local cur=${COMP_WORDS[COMP_CWORD]}
    COMPREPLY=( $(compgen -W "${execs[*]}" -- "$cur" ) )
    break
  done
}

complete -F _npx npx