Very interesting approach to components outside React and Vue. 
Will you continue this episode with one devoted to testing ViewComponents?

VSCode is doing very smart code suggestions. What plugin are you using?

I've devoted countless hours to understand Webpacker and migrate most of my projects. 
Now, I'm comfortable with it. 
But, when need to change something (maybe 10 minutes of work in the backend-ruby part) in a project not touched in months, there is a lot of problems in the "yarn part": Lots of deprecation complaints, need to investigate which part is failing ... one or two hours later, project is working again.
When looking to rails 4 happy times with Coffeescript and sprockets where asset pipeline just worked ... I'm not sure if we have better or worst framework nowadays.

Very interesting episode! I've written a bunch of ruby CLI without the assistance of ttytoolkit and I definitely will add this library to my next ones.
Just two insights:

I apologize for the off-topic. Why do you use double quotes when not interpolating values? Rubocop gets angry all the time.