Merge pull request #8 from sjrd/scala-3

Add cross-compilation for Scala 3.

Author: sjrd

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        scalaversion: ["2.10.7", "2.11.12", "2.12.8", "2.13.0"]
+        scalaversion: ["2.10.7", "2.11.12", "2.12.8", "2.13.0", "3.0.0"]
     steps:
       - uses: actions/checkout@v2
       - uses: olafurpg/setup-scala@v10
@@ -21,5 +21,9 @@ jobs:
       - uses: coursier/cache-action@v5
       - name: Build
         run: sbt "++${{ matrix.scalaversion }}" scalajs-stubs/publishLocal
+
+      # MiMa is not run for the Scala 2.10.x artifact because there is no
+      # version of sbt-mima that works with sbt 1.5.x and for Scala 2.10.x.
       - name: MiMa
+        if: matrix.scalaversion != '2.10.7'
         run: sbt "++${{ matrix.scalaversion }}" scalajs-stubs/mimaReportBinaryIssues

build.sbt

@@ -1,13 +1,15 @@
 val previousVersion = "1.0.0"
 
 inThisBuild(Def.settings(
-  version := "1.0.1-SNAPSHOT",
+  version := "1.1.0-SNAPSHOT",
   organization := "org.scala-js",
 
-  crossScalaVersions := Seq("2.12.8", "2.10.7", "2.11.12", "2.13.0"),
+  crossScalaVersions := Seq("2.12.8", "2.10.7", "2.11.12", "2.13.0", "3.0.0"),
   scalaVersion := crossScalaVersions.value.head,
   scalacOptions ++= Seq("-deprecation", "-feature", "-Xfatal-warnings"),
 
+  versionScheme := Some("semver-spec"),
+
   homepage := Some(url("https://www.scala-js.org/")),
   licenses += ("BSD New",
       url("https://github.com/scala-js/scala-js-stubs/blob/master/LICENSE")),
@@ -19,8 +21,15 @@ inThisBuild(Def.settings(
 
 lazy val `scalajs-stubs`: Project = project.in(file("."))
   .settings(
-    mimaPreviousArtifacts +=
-      organization.value %% moduleName.value % previousVersion,
+    mimaPreviousArtifacts ++= {
+      if (scalaBinaryVersion.value == "3") Set.empty // new in this release
+      else Set(organization.value %% moduleName.value % previousVersion)
+    },
+
+    /* Do not fail mimaReportBinaryIssues when mimaPreviousArtifacts is empty.
+     * We specifically set it to empty above when binary compat is irrelevant.
+     */
+    mimaFailOnNoPrevious := false,
 
     publishMavenStyle := true,
     publishTo := {

project/build.properties

@@ -1 +1 @@
-sbt.version=1.2.8
+sbt.version=1.5.5

project/plugins.sbt

@@ -1 +1 @@
-addSbtPlugin("com.typesafe" % "sbt-mima-plugin" % "0.2.0")
+addSbtPlugin("com.typesafe" % "sbt-mima-plugin" % "0.8.1")