added support for sjs 1.0.0-M1

Author: andreaTP

.travis.yml

@@ -11,6 +11,9 @@ scala:
   - 2.11.11
   - 2.12.2
   - 2.13.0-M1
+env:
+  - SCALAJS_VERSION=0.6.18
+  - SCALAJS_VERSION=1.0.0-M1
 matrix:
   include:
     - scala: 2.10.6

project/build.sbt

@@ -1,5 +1,10 @@
+
+val scalaJSVersion =
+  Option(System.getenv("SCALAJS_VERSION")).getOrElse("0.6.18")
+
+addSbtPlugin("org.scala-js" % "sbt-scalajs" % scalaJSVersion)
+
 addSbtPlugin("com.eed3si9n" % "sbt-doge" % "0.1.5")
-addSbtPlugin("org.scala-js" % "sbt-scalajs" % "0.6.18")
 addSbtPlugin("com.typesafe.sbt" % "sbt-osgi" % "0.8.0")
 addSbtPlugin("org.scala-native" % "sbt-crossproject" % "0.2.0")
 addSbtPlugin("org.scala-native" % "sbt-scalajs-crossproject" % "0.2.0")