Script to init a new Scala JS/JVM cross-built project with an Intellij friendly layout. After running, just Open the directory in Intellij and Import. Uses https://github.com/lihaoyi/utest#jscrossbuild

initScalajsCrossProject.sh

#!/bin/bash
[ $# -eq 0 ] && { echo "Usage: $0 <projectName>"; exit 1; }

PROJECT=$1
echo "Creating project in ./$PROJECT"

mkdir -p $PROJECT/{js,jvm,project}
mkdir -p $PROJECT/shared/src/{main,test}/{scala,resources}

cd $PROJECT

ln -s ../shared js/shared; ln -s ../shared jvm/shared

cat > project/plugin.sbt <<EOF
addSbtPlugin("org.scala-lang.modules.scalajs" % "scalajs-sbt-plugin" % "0.5.5")

addSbtPlugin("com.lihaoyi" % "utest-js-plugin" % "0.2.4")
EOF

cat > project/Build.scala <<EOF
import sbt._
import Keys._
import utest.jsrunner._

object Build extends sbt.Build{
  lazy val cross = new JsCrossBuild(
    name := "$PROJECT",
    version := "0.1",
    scalaVersion := "2.11.2"
  )

  lazy val root = cross.root
  lazy val js = cross.js
  lazy val jvm = cross.jvm
}
EOF