Prototype at GitHub
Inspired by the benefits he was seeing from using React at GitHub, @joelhawksley built a prototype with @tenderlove of what it might look like to incorporate ideas from React into Rails.
They took inspiration from existing projects such as trailblazer/cells, dry-view, komponent, and arbre, designing an API meant to integrate as seamlessly as possible with Rails.
Once the prototype was tested in production, GitHub open sourced the project as ActionView::Component. @joelhawksley presented the prototype at RailsConf 2019.
Support for 3rd-party component frameworks in Rails
In rails#36388, Rails added support for 3rd-party component frameworks via the
ActionView::Component was renamed to
ViewComponent, delineating it as a project separate from Rails.