enalmada / sbt-rtlcss   0.1.0


An sbt-web plugin to perform UglifyJS optimization

Scala versions: 2.12
sbt plugins: 1.0


An sbt-web plugin to perform RTLCSS conversion on css files.


To use this plugin, use the addSbtPlugin command within your project's plugins.sbt file:

addSbtPlugin("com.github.enalmada" % "sbt-rtlcss" % "0.1.0")

Your project's build file also needs to enable sbt-web plugins. For example, with build.sbt:

lazy val root = (project in file(".")).enablePlugins(SbtWeb)

As with all sbt-web asset pipeline plugins you must declare their order of execution:

pipelineStages in Assets := Seq(rtlcss)

A standard build profile for the Uglify optimizer is provided which will mangle variables for obfuscation and compression. Each input file found in your assets folders matching the includeFilter will have a corresponding .rtl.css file.


If you wish to limit or extend what is rtl then you can use filters:

includeFilter in rtlcss := GlobFilter("mycss/*.css"),

...where the above will include only those files under the mycss folder.

The sbt excludeFilter is also available to the rtlcss scope and defaults to excluding the public folder and extracted Webjars. I am not sure it is working quite right if you override this though.

##TODO (help wanted)

  • This is the first release and quick and dirty copy of sbt-uglify to give me some rtl css files. Some polish would be nice.
  • Add build.sbt options reflecting all the native rtlcss options
  • Figure out (and document for others) how to run the tests. I went into sbt-test/sbt-rtlcss/rtlcss and did "sbt clean webStage" manually for now
  • Figure out how to remove the "ERROR default configuration file used" message
  • Figure out wy using exclude filter seems to enable much more rtl css.

The plugin is built on top of JavaScript Engine which supports different JavaScript runtimes.