Optimizing JS from WebJars using sbt-rjs in a Play 2.3.x app

I am using Play 2.4.3. Added addSbtPlugin(“com.typesafe.sbt” % “sbt-rjs” % “1.0.7”) to plugins.sbt // rjs = RequireJS, uglifies, shrinks to one file, replaces WebJars with CDN client accepts them pipelineStages := Seq(rjs, digest, gzip) This in my build.sbt does all the shrinking work etc. to bower JS, and webjars.