Make use of @js.native def feature for newer Scala.js version and min…

…or cleanup in the build

build.sbt

@@ -71,7 +71,8 @@ val httpTestSettings: Seq[Setting[_]] = testSettings ++ Seq(
       SeleniumJSEnv.Config()
         .withMaterializeInServer("tmp", "http://localhost:8080/tmp/")
     )
-  }
+  },
+  scalaJSLinkerConfig ~= { _.withModuleKind(ModuleKind.ESModule) }
 )
 
 // We'll need the name scalajs-env-selenium for the `seleniumJSEnv` project
@@ -137,7 +138,4 @@ lazy val seleniumJSEnvTest: Project = project.
 lazy val seleniumJSHttpEnvTest: Project = project.
   enablePlugins(ScalaJSPlugin).
   enablePlugins(ScalaJSJUnitPlugin).
-  settings(httpTestSettings).
-  settings(
-    scalaJSLinkerConfig ~= { _.withModuleKind(ModuleKind.ESModule) }
-  )
+  settings(httpTestSettings)

seleniumJSHttpEnvTest/src/main/scala/org/scalajs/jsenv/selenium/CamelCase.scala

@@ -1,5 +1,12 @@
 package org.scalajs.jsenv.selenium
 
+import scala.scalajs.js
+import scala.scalajs.js.annotation.JSImport
+
 object CamelCase {
-  def hello(input: String): String = s"Hello ${CamelcaseEsModule(input)}!"
+  def hello(input: String): String = s"Hello ${camelCase(input)}!"
+
+  @JSImport("https://cdn.skypack.dev/camelcase@^6.0.0", JSImport.Default)
+  @js.native
+  def camelCase(input: String): String = js.native
 }