If Clojurescript can actually work with Webpack and external modules under advanced compilation that is pretty amazing progress. Probably the biggest improvement in half a decade.
From the article[0]:
> But after nearly three years since we first shipped Node module processing via Closure, it’s apparent that too few of the most popular libraries can be subjected to advanced optimizations. While we still believe there’s promise here, the ClojureScript community will have to show the rest of the world the way by developing compelling JavaScript libraries that can be readily consumed by popular JavaScript tools, yet still be subjected to Closure’s phenomenal tree shaking and code splitting when building with ClojureScript.
I love the work that's been done on shadow-cljs (and the maintainer is amazing) -- I've had a vastly easier and more stable time than with JS bundlers.
That said, in building a business on top of Clojure(Script), it's incredibly reassuring to know that shadow isn't a single point of failure.
This feature will make integrating/selling ClojureScript into existing projects easier too -- I only wish that I'd had this when moving from company to company a few years ago -- I'd have brought ClojureScript to a number of places. :)