Npm tool for upgrade Windows npm node installation.
Install the package as global.
npm install -g npm-win-upgrade
This command will uninstall your global npm package (if installed).
And update the local Program Files\nodejs npm package (if required).
npm-win-upgrade
This operation requires admin privileges to write in Program Files\nodejs, so you will be asked for UAC.
Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.