For those using Windows, the easiest way to remove all globally installed npm packages is to delete the contents of:

C:\Users\username\AppData\Roaming\npm

You can get here quickly by typing %appdata% (either in explorer, run prompt, or start menu).

For those using Windows, the easiest way to remove all globally installed npm packages is to delete the contents of:

C:\Users\username\AppData\Roaming\npm

You can get there quickly by typing %appdata%/npm in either the explorer, run prompt, or from the start menu.