Simplify build matrix

.travis.yml

@@ -10,26 +10,13 @@ jdk:
 
 env:
   matrix:
-    - TRAVIS_NODE_VERSION="14.3.0" SCALAJS_VERSION="0.6.33"
-    - TRAVIS_NODE_VERSION="14.3.0" SCALAJS_VERSION=""
+    - TRAVIS_NODE_VERSION="14.3.0"
+    - TRAVIS_NODE_VERSION="12.16.3"
+    - TRAVIS_NODE_VERSION="10.20.1"
 
 script:
-  - sbt ++$TRAVIS_SCALA_VERSION test
-
-jobs:
-  include:
-    - name: "Node.12 Scala.js 0.6"
-      env:  TRAVIS_NODE_VERSION="12.16.3" SCALAJS_VERSION="0.6.33"
-      script: sbt ++$TRAVIS_SCALA_VERSION nodejs_v12/test nodejs_v10/test
-    - name: "Node.12 Scala.js 1.x"
-      env:  TRAVIS_NODE_VERSION="12.16.3" SCALAJS_VERSION=""
-      script: sbt ++$TRAVIS_SCALA_VERSION nodejs_v12/test nodejs_v10/test
-    - name: "Node.10 Scala.js 0.6"
-      env:  TRAVIS_NODE_VERSION="10.20.1" SCALAJS_VERSION="0.6.33"
-      script: sbt ++$TRAVIS_SCALA_VERSION nodejs_v10/test
-    - name: "Node.10 Scala.js 1.x"
-      env:  TRAVIS_NODE_VERSION="10.20.1" SCALAJS_VERSION=""
-      script: sbt ++$TRAVIS_SCALA_VERSION nodejs_v10/test
+  - SCALAJS_VERSION="0.6.33" sbt ++$TRAVIS_SCALA_VERSION test
+  - SCALAJS_VERSION=""       sbt ++$TRAVIS_SCALA_VERSION test
 
 install:
   - rm -rf ~/.nvm &&

build.sbt

@@ -1,13 +1,19 @@
 organization in ThisBuild := "net.exoego"
 
-lazy val root = (project in file("."))
-  .aggregate(core, nodejs_v14, nodejs_v12, nodejs_v10)
-  .settings(MySettings.commonSettings)
-  .settings(MySettings.publishingSettings)
-  .settings(MySettings.nonPublishingSetting)
-  .settings(
-    name := "scala-js-nodejs"
-  )
+lazy val root = {
+  val p = (project in file("."))
+    .aggregate(core)
+    .settings(MySettings.commonSettings)
+    .settings(MySettings.publishingSettings)
+    .settings(MySettings.nonPublishingSetting)
+    .settings(
+      name := "scala-js-nodejs"
+    )
+  val travisNodeVersion = Option(System.getenv("TRAVIS_NODE_VERSION")).filter(_.nonEmpty).getOrElse("")
+  if (travisNodeVersion.startsWith("10.")) p.aggregate(nodejs_v10)
+  else if (travisNodeVersion.startsWith("12.")) p.aggregate(nodejs_v10, nodejs_v12)
+  else p.aggregate(nodejs_v10, nodejs_v12, nodejs_v14)
+}
 
 lazy val core = (project in file("./core"))
   .enablePlugins(ScalaJSPlugin)