lein-cljsbuild source-cljs dir -> output-js dir?

Question

Looking at cljsbuild doc https://github.com/emezeske/lein-cljsbuild

:cljsbuild {
    :builds [{
        ; The path to the top-level ClojureScript source directory:
        :source-paths ["src-cljs"]

        :compiler {
          :output-to "war/javascripts/main.js"  
            ; default: target/cljsbuild-main.js

it requires

:source-paths as a directory

:output-to as a js-file

Why not source dir -> output dir??

How do we manage many source files to be compiled to many output files?

Is there any configuration to map *.cljs @sourceDir -> *.js @targetDir ?

Why do you want multiple output files? – deterb Jul 05 '13 at 01:42 — deterb, Jul 05 '13 at 01:42

score 4 · Answer 1 · edited Oct 01 '13 at 15:13

It is possible to get multiple output files, just use multiple builds

Keep in mind the code is meant to run through the Google Closure compiler, which not only reduces the file count down to 1 (which is more efficient for the browser to download), but also removes a huge amount of redundancy in the code. It also ensures that files are loaded in the correct order.

If you don't want any inlining, you can set the :optimizations option to :none (as compared to :whitespace, :simple, or :advanced. That may get you something closer to what you want. Make sure you check the target directory for temporary files which may be what you are after.

score 1 · Answer 2 · answered Jul 05 '13 at 01:29

I can't speak for the author, but I imagine it has to do with a couple things.

Having a single output makes things like cljsbuild auto more manageable.
Well I can see some limited use case for multiple input paths, multiple output files seems counter to browser efficiency? Where you basically want a single highly optimized .js file for optimum download speeds.

If you needed multiple .js files from multiple .cljs builds that aren't really related, that's essentially a different project already.

score 0 · Answer 3 · edited May 23 '17 at 12:20

0

You'll still need an :output-to, but I think you're looking for the :output-dir option.

edited May 23 '17 at 12:20

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answered Feb 01 '15 at 11:19

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lein-cljsbuild source-cljs dir -> output-js dir?

3 Answers3