From 5f8196dd570f0ec5d6add476ed20a35b8d984af8 Mon Sep 17 00:00:00 2001
From: "Yang, Bo" <pop.atry@gmail.com>
Date: Sat, 18 Apr 2020 18:39:23 -0700
Subject: [PATCH] Cross build for Scala.js 1.x and 0.6

---
 .travis.yml                      |  8 +++++++-
 build.sbt                        |  2 ++
 project/plugins.sbt              |  4 +++-
 project/plugins.sbt.scala-js.0.6 | 22 ++++++++++++++++++++++
 4 files changed, 34 insertions(+), 2 deletions(-)
 create mode 100644 project/plugins.sbt.scala-js.0.6

diff --git a/.travis.yml b/.travis.yml
index d88d89f..176ecbd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -31,8 +31,14 @@ before_deploy:
 
 deploy:
   - provider: script
-    script: sbt ++$TRAVIS_SCALA_VERSION "set every Seq(sonatypeSessionName := \"Travis Job $TRAVIS_JOB_NAME $TRAVIS_JOB_NUMBER ($TRAVIS_JOB_WEB_URL)\", publishTo := sonatypePublishToBundle.value)" publishSigned sonatypeBundleRelease
+    script: sbt $SBT_ARGS ++$TRAVIS_SCALA_VERSION "set every Seq(sonatypeSessionName := \"Travis Job $TRAVIS_JOB_NAME $TRAVIS_JOB_NUMBER ($TRAVIS_JOB_WEB_URL)\", publishTo := sonatypePublishToBundle.value)" publishSigned sonatypeBundleRelease
     skip_cleanup: true
     on:
       all_branches: true
       condition: $GITHUB_PERSONAL_ACCESS_TOKEN
+
+env:
+  - SBT_ARGS=
+  - SBT_ARGS=--addPluginSbtFile=project/plugins.sbt.scala-js.0.6
+
+sbt_args: $SBT_ARGS
diff --git a/build.sbt b/build.sbt
index 4254e94..d50ad02 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1,3 +1,5 @@
+import sbtcrossproject.CrossPlugin.autoImport.{crossProject, CrossType} 
+
 organization in ThisBuild := "com.thoughtworks.sde"
 
 publish / skip := true
diff --git a/project/plugins.sbt b/project/plugins.sbt
index 692968d..569054f 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -2,7 +2,9 @@ addSbtPlugin("com.thoughtworks.sbt-best-practice" % "sbt-best-practice" % "7.2.0
 
 addSbtPlugin("com.thoughtworks.sbt-scala-js-map" % "sbt-scala-js-map" % "4.0.0")
 
-addSbtPlugin("org.scala-js" % "sbt-scalajs" % "0.6.32")
+addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.0.1")
+
+addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % "1.0.0")
 
 addSbtPlugin("org.xerial.sbt" % "sbt-sonatype" % "3.8")
 
diff --git a/project/plugins.sbt.scala-js.0.6 b/project/plugins.sbt.scala-js.0.6
new file mode 100644
index 0000000..4be2b43
--- /dev/null
+++ b/project/plugins.sbt.scala-js.0.6
@@ -0,0 +1,22 @@
+// An optional sbt file to replace Scala.js 1.0 with 0.6
+dependencyOverrides += Defaults.sbtPluginExtra(
+  "org.scala-js" % "sbt-scalajs" % "0.6.32",
+  sbtBinaryVersion.value,
+  scalaBinaryVersion.value,
+)
+
+Compile / sourceGenerators += Def.task {
+  val file = (Compile / sourceManaged).value / "SkipPublishForNonScalaJSProjects.scala"
+  IO.write(file, """
+    import scalajscrossproject.ScalaJSCrossPlugin.autoImport._
+    import sbtcrossproject.CrossPlugin.autoImport._
+    import sbt._, Keys._
+    object SkipPublishForNonScalaJSProjects extends AutoPlugin {
+      override def trigger = allRequirements
+      override def projectSettings = Seq(
+        publish / skip := crossProjectPlatform.value != JSPlatform
+      )
+    }
+  """)
+  Seq(file)
+}.taskValue