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 ?