Before you start using the builder ssg you need to make sure that you have installed all required software tools.
You can use a Node installer to install both Node.js and npm on your system.
Open up your terminal.
$ node --version
$ npm --version
The output of each of those commands should be a version number. If entering those commands doesn’t show you a version number, go back and make sure you have installed Node.js.
You will need builder-ssg in your machine, you can clone or download to your machine.
Open up your terminal and cd into your folder.
$ npm install