Hey Clark, I've been using this extension for a long time now, but until a few days ago I haven't had the opportunity to use a Mithril component (in this case the contact form).
I've tried to use it as it says in the GitHub repository, both in the
extend.php, as in the page itself.
But for some reason I have not been able to get it to work, I get this console error:
forum.js?v=1da2ee39:1 TypeError: Cannot read properties of undefined (reading 'ContactForm')
at eval (eval at <anonymous> (forum.js?v=1da2ee39:410:1051380), <anonymous>:1:38)
at Array.map (<anonymous>)
at Page.view (forum.js?v=1da2ee39:410:1051273)
at Function.a (forum.js?v=1da2ee39:1:138663)
at p (forum.js?v=1da2ee39:1:145489)
at f (forum.js?v=1da2ee39:1:141716)
at p (forum.js?v=1da2ee39:1:144380)
Does it work for you?