The Webpackening Previously on Locally Sourced: Rails came out and let people do Ajax, when Ajax was a thing. Then Ajax was less of a thing and Rails let people write CoffeeScript, and use Sprockets. Also, I wrote a book on Modern Front-End Programming with Rails, which is relevant to this edition. The Rails 5 and 6 releases have had a few big JavaScript components, with one more presumably imminent. With Rails API and Webpacker, Rails made a big move toward allowing better interoperability w...