a safe way to upgrade all of your globally-installed npm packages

npm-upgrade-bleeding.sh

#!/bin/sh

set -e
set -x

for package in $(npm -g outdated --parseable --depth=0 | cut -d: -f3)
do
    npm -g install "$package"
done

npm-upgrade.sh

#!/bin/sh

set -e
set -x

for package in $(npm -g outdated --parseable --depth=0 | cut -d: -f2)
do
    npm -g install "$package"
done