Update local or global npm packages

unmp

#!/usr/bin/env bash

function usage() {
    echo "Usage: $(basename $0) -l/-u [-g -h]" 1>&2
    echo "Options are:" 1>&2
    echo "  -l list packages" 1>&2
    echo "  -u update packages" 1>&2
    echo "  -g go global" 1>&2
    echo "  -h show this help" 1>&2
    exit 1
}

list=""
global=""
update=""

while getopts "lug" o; do
    case "${o}" in
        l)
            [[ -n $update ]] && usage || list="1"
            ;;
        u)
            [[ -n $list ]] && usage || update="1"
            ;;
        g)
            global="--global"
            ;;
        *)
            usage
            ;;
    esac
done

[[ -z $list && -z $update && -z $global ]] && usage

dirs=($(npm list $global --depth 0 --parseable 2>/dev/null))

base=${dirs[0]}
rest=(${dirs[@]:1})

declare -a packages

for i in ${rest[@]}; do
    packages+=($(echo $i | sed -e "s:${base}::" -e "s:/node_modules/::"))
done

if [ -n "$list" ]; then
    echo ${packages[@]} | tr " " "\n"
elif [ -n "$update" ]; then
    npm $global install ${packages[@]}
fi