step 1

build.sbt

@@ -28,21 +28,25 @@ ThisBuild / tlSonatypeUseLegacyHost := false
 
 // publish website from this branch
 ThisBuild / tlSitePublishBranch := Some("main")
-ThisBuild / scalaVersion := "3.4.0-RC1-bin-20231106-f61026d-NIGHTLY"
+ThisBuild / scalaVersion := "3.3.1"
 
 lazy val root = tlCrossRootProject.aggregate(core, tests)
 
 lazy val core = crossProject(
   JSPlatform,
   JVMPlatform
   // NativePlatform
-).crossType(CrossType.Full)
+)
+  .crossType(CrossType.Full)
   .settings(
     name := "vecxt",
     description := """High performance extensions for numeric workloads for
       - Array[Double] on JVM
       - Array[Double] on native.
-      - Float64Array on JS"""
+      - Float64Array on JS""",
+    libraryDependencies ++= Seq(
+      "ai.dragonfly" %%% "narr" % "0.103"
+    )
   )
   .jvmSettings(
   )

core/js/src/main/scala/vecxt/array.extensions.scala

@@ -23,6 +23,8 @@ import scala.scalajs.js
 import scala.scalajs.js.typedarray.Float64Array
 import scala.util.chaining.*
 
+type NArray = Float64Array
+
 extension (v: Float64Array)
   inline def sort(): Unit = v.asInstanceOf[TypedArrayFacade].sort()
   inline def reverse(): Unit = v.asInstanceOf[TypedArrayFacade].reverse()

core/jvm/src/main/scala/vecxt/array.extensions.scala

@@ -19,6 +19,8 @@ import vecxt.BoundsCheck
 import vecxt.Limits.Limit
 import vecxt.Retentions.Retention
 
+type NArray = Array[Double]
+
 extension (vec: Array[Boolean])
   inline def countTrue: Int =
     var sum = 0