Scripts
Scripts work the same way as groups. The scripts input variable should contain an array of one dictionary for each script. You can skip the scripts key entirely if you don't need any scripts. Each dictionary should contain a name key, which is the path to the script file itself. It should also have a template_path item which is a path to a script template. A script template is included with this project, although you'll probably only be interested in setting the priority ("After", or "Before")
Unlike packages, scripts are uploaded every run, as presumably, they are signicantly smaller than even modestly-sized packages.
As an example of a recipe containing a script, check out Spotify.jss.
Other questions not addressed here? Join us in the #jss-importer channel on the Mac Admins Slack.