The project is currently using a custom fork of Vue Styleguidist.
I want to switch back to the official NPM package as soon as possible to make things easier for everyone.
Currently, switching to the latest Vue Styleguidist would break things since the navigation option has been removed/changed, but there’s related work going on in React Styleguidist that will fix the issue (by bringing back some of that functionality and also open up new possibilities): https://github.com/styleguidist/react-styleguidist/pull/941
Once that is hopefully merged all the way to Vue Styleguidist will start working on 2.2.0 release where this fix will be included as well.