Earlier today, we released [com.keminglabs/cljx "0.3.0"], which brings a bunch
of significant changes and improvements:
https://github.com/lynaghk/cljx
Existing users should review the changelog entry, as this is a breaking release:
https://github.com/lynaghk/cljx/blob/master/CHANGES.md
cljx is a way to statically rewrite Clojure (or ClojureScript) to be portable
to ClojureScript (or Clojure). This means that you can target both languages
with a single codebase. To do this, you write code in .cljx files, and use
annotations to elide language/runtime-specific forms from the output intended
for different targets. There's better examples in the README (and some handful
of projects using cljx out in the wild, like
https://github.com/cemerick/pprng), but you should get the flavour from this
snippet:
(defn x
[]
(throw (#+clj Exception. #+cljs js/Error. "WTF")))
cljx will produce two files from this input: a .clj file containing the
`Exception.` symbol but not the `js/Error.` symbol, and a .cljs file containing
the inverse. In short, cljx is an s-expression preprocessor (intentionally
very limited — this is all you really need to write practical, portable
Clojure[Script]).
Thanks to Kevin Lynagh for cutting releases and allowing me to play in his
sandbox, and all the others noted in the README that inspired or helped in the
effort.
Happy Clojure[Script]-ing!
- Chas
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