Ruby on Rails lacks a recommended way to structure your frontend code for many years. Tao on Rails is the framework to fill the gap which will modularize your page with the new Custom Elements v1 API.

Blade Runner plugin for Sauce Labs (saucelabs.com)

Auto-syncs records in client-side JS (through a Model DSL) from changes (updates/destroy) in the backend Rails server through ActionCable. Also supports streaming newly created records to client-side JS. Supports lost connection restreaming for both new records (create), and record-changes (updates/destroy). Auto-updates DOM elements mapped to a record attribute, from changes (updates/destroy).

A popover component based on Tao Framework.

UI library based on tao