npm-update (3) - Linux Manuals
npm-update: Update a package
NAME
npm-update -- Update a packageSYNOPSIS
npm.commands.update(packages, callback)Updates a package, upgrading it to the latest version. It also installs any missing packages.
The 'packages' argument is an array of packages to update. The 'callback' parameter will be called when done or when an error occurs.