I guess you are thinking this tool is required because you are coming from Google Chrome extension development where you need a compiler tool to create CRX files. This is not the case for Firefox extension development. It uses plain ZIP files.
You do not need this or any command-line tool to create Firefox extensions. You can create and publish an extension entirely with Notepad, Firefox, and the built in ZIP functionality of Windows Explorer if you want.
You do not need this or any command-line tool to create Firefox extensions. You can create and publish an extension entirely with Notepad, Firefox, and the built in ZIP functionality of Windows Explorer if you want.