Its quite rare to see interop between compile to js languages tho. Also rare to see projects using more (if not in the middle of a rewrite/port) than one compile to js language. YMMV.
> Its quite rare to see interop between compile to js languages tho
js interop in Clojurescript is dead simple. Moreover, you can have shared logic between different runtimes. The promise of Nodejs for code re-use, in practice turned out to be not as straightforward, even though you have js runtime in both places. With Clojurescript, you can have the shared logic in the same namespace - it's mindblowing, you can have functions that work on both - JVM and JS.
Im not talking about X->JS->X interop, but X->Y->JS->Y->X interop, where X,Y = compile to JS language.
> it's mindblowing, you can have functions that work on both - JVM and JS
Thats basically what you could do long before Nodejs (that made server/client code sharing popular) came out in Haxe. You could target a huge number of targets from a single codebase.
Are you saying that getting two different compile-to-JS languages to interoperate is messy and you have to go through multiple transpilation layers to make them talk to each other?
The Clojurescript way isn't about transpiling between different compile-to-JS languages. It's simpler: write once in Clojure, compile to both JVM and JS directly. No intermediate language chains needed. And you are free to use whatever js and java libs directly.
Yes, sure - valid point about Haxe, you're right, it actually did this before Clojurescript or even before Node existed. IIRC Haxe could compile a single codebase to multiple targets. That multi-target approach tho required writing in a lowest-common-denominator lang. Cljs practical in the sense that you get the full power of Clojure on the JVM side and reasonable JS semantics on front-end - without compromise. Haxe often meant sacrificing language features to stay compatible across all targets.
Clojurescript is surprisingly pragmatic in that sense and works well. The downside - you can use Cljs on its own, but it truly shines when paired with Clojure, but JVM, despite being amazing piece of tech has a marketing problem - people hear JVM and immediately think Java.
