vmunier/sbt-web-scalajs

Using sbt-web-scalajs with single-project build

Krever opened this issue · 3 comments

Krever commented

Hi,

I think it is currently not possible to use sbt-web-scalajs with single-project build. What I mean, is to have scalajs sources in our sbt-web project. Currently we need to have at least two projects: "sbt-web one" and "scalajs one".

If I'm wrong or there is a good reason for such behaviour please tell me!

Thanks

vmunier commented

Hi,

Indeed, it is currently not possible to use sbt-web-scalajs within a single-project build.
You cannot do the following:

lazy val client: Project = project.settings(
  // self referencing the client project would cause an infinite loop when running compile
  scalaJSProjects := Seq(client),
  pipelineStages in Assets := Seq(scalaJSPipeline)
).enablePlugins(ScalaJSPlugin, ScalaJSWeb, SbtWeb)

The main goal of sbt-web-scalajs is to collect the Scala.js output files (*-opt.js, *-launcher.js, sourcemap files) using SbtWeb pipelines, so that a Server could send those files down to a browser.

Out of curiosity, why would you like to use sbt-web-scalajs without any server?

Krever commented

To generate fully static site and serve it outside of a project with some external server, e.g. Apache HTTP, nginx, Amazon S3, etc.

joan38 commented

@Krever Yes it works:

lazy val myProject = crossProject
  .crossType(CrossType.Pure)

lazy val myProjectJVM = myProject.jvm
  .enablePlugins(SbtWeb)
  .settings(
    WebKeys.packagePrefix in Assets := "public/",
    managedClasspath in Runtime += (packageBin in Assets).value,
    scalaJSProjects := Seq(myProjectJS),
    pipelineStages in Assets := Seq(scalaJSPipeline)
)

lazy val myProjectJS = myProject.js
  .enablePlugins(ScalaJSPlugin, ScalaJSWeb)
  .settings(scalaJSUseMainModuleInitializer := true)
  • ❤️1