cmd-or-ctrl (npm): The main thing: returning 'command' or 'control' based on the OS the user is using; another thing: returning the common names of OSs.
Keywords: Roderick Qiu|RoderickQiu|scris|cmd-or-ctrl|cmdOrCtrl|cmd|ctrl|command|control|os|operating system|Windows|macOS|Linux|win32|darwin|electron|node