Node & NPM Global Updater: Updates NodeJS, NPM and all global Packages to 'latest' in one step

nvm_node_updater.sh

#!/bin/sh

# NVM_NODE_UPDATER
# v1.0.1
#
# Makes keeping NVM-managed, global NodeJS installations up-to-date a breeze.
# First, the global NodeJS installation is updated to 'latest'.
# Second, all global NPM packages are migrated, then also updated to 'latest'.
# Requires the Node Version Manager (https://github.com/creationix/nvm).
#
nvm_node_updater () {
	# Check for latest NodeJS version
	NODE_CURRENT=$(nvm_ls_current)
	NODE_LATEST=$(nvm_remote_versions | grep '^v' | tail -1)
	
	if [ "${NODE_CURRENT}" != "${NODE_LATEST}" ]
	then
		# Update to latest NodeJS version (migrating all currently installed global NPM packages)
		echo "Updating global NodeJS: ${NODE_CURRENT} to ${NODE_LATEST}"
		nvm install ${NODE_LATEST} --reinstall-packages-from=${NODE_CURRENT}
		nvm alias default ${NODE_LATEST} && nvm use default
		echo "Updated default NodeJS to ${NODE_LATEST}."
	else
		echo "Global NodeJS already up-to-date (${NODE_CURRENT})."
	fi
	
	# Check for latest NPM package versions
	NPM_OUTDATED=$(npm --global outdated --parseable --depth=0 --loglevel silent | cut -d: -f3 | cut -f1 -d'@' | tr '\r\n' ' ' | sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//')
	
	if [ -n "${NPM_OUTDATED}" ]
	then
		# Update to latest NPM package versions
		echo "Updating global NPM package(s): ${NPM_OUTDATED// /, }"
		for PACKAGE in ${NPM_OUTDATED}
			do npm --global install --loglevel silent ${PACKAGE} && echo "Updated '${PACKAGE}' to latest."
		done
	else
		echo "Global NPM packages are already up-to-date."
	fi
}