Hey,
the feature already exists like I mentioned on github. I'm just not sure about
its state since it is "marked" experimental [1]. I'm not sure how it came into
existence or what the backstory was but if I understand the code correctly you
are supposed to include a deps.cljs in your .jar which contains something like
{:externs ["my/externs.js"]} where my/externs.js is also included in your .jar
so everything is available via the classpath.
Not sure how well this solution works since you might run into conflicts if 2
libraries provide similar externs. Not sure how Closure handles this sort of
conflict.
The feature was introduce in February 2012, maybe the original authors can
chime in here.
Cheers,
/thomas
[1]
https://github.com/clojure/clojurescript/blob/9fd6bf5bd55421c3d5becacc5230ed661d6fb3c3/src/clj/cljs/closure.clj#L838
PS: the feature probably won't work with shadow-build currently, need to look
into that.
On Monday, November 10, 2014 12:37:26 PM UTC+1, Nikita Prokopov wrote:
> Hi!
>
> Right now lein-cljsbuild allows for externs to be specified on user side.
> E.g. I’m building app with react-cljs, I add dependency, but there’s also a
> second step: I need to put :externs ["react/externs/react.js"] into _my_
> project.clj.
>
> This is tedious and easy to forget, leading to a lot of confusion (I
> developed for 2 month and everything was fine, then I turn on advanced build
> and nothing works).
>
> On the other hand, conceptually, externs are part of a library, not my user
> code. So, if library author thinks his library needs externs, he specifies it
> and packs externs along with library code, and they’re automatically used
> when I add dependency. So as a user I don’t manage external deps’ externs at
> all. As Thomas Heller puts it, it might be [a quality of life
> change](https://github.com/tonsky/datascript/issues/30#issuecomment-62253696).
>
> Any thought on it? Maybe there’s already a way to do that?
>
> Nikita.
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