[build] Update scalajs to 1.20.1

Make Name lazy on JS to help js linker

Author: rayrobdod

Base/src/main/scala-2/package.scala

@@ -3,6 +3,8 @@ package name.rayrobdod
 import scala.reflect.api.Universe
 import scala.reflect.macros.blackbox.Context
 import scala.Predef._
+import com.eed3si9n.ifdef.ifdef
+import com.eed3si9n.ifdef.ifndef
 
 /**
  * A library for implementing custom string interpolation implementations using Parser Combinators
@@ -14,9 +16,26 @@ package object stringContextParserCombinator {
 	type IdToExpr[A] = =:=[A, A]
 	implicit val given_IdCtx: IdCtx = new IdCtx()
 
+	@scala.annotation.nowarn("msg=unused")
+	@ifdef("always")
+	private def __do_not_warn_about_unused_ifdef = 0
+
+	@scala.annotation.nowarn("msg=unused")
+	@ifndef("never")
+	private def __do_not_warn_about_unused_ifndef = 0
+
+	@ifndef("platform:js")
+	private[stringContextParserCombinator]
+	val Name: Unapply.Fixed[Universe#Name, String] = {
+		(input:Universe#Name) => Option(input.decodedName.toString)
+	}
+
+	// needs to be lazy so that the js linker can elide the calls to the
+	// "non-existent method scala.reflect.api.Names$NameApi.decodedName()"
+	@ifdef("platform:js")
 	private[stringContextParserCombinator]
-	val Name = new Unapply.Fixed[Universe#Name, String] {
-		def unapply(input:Universe#Name):Option[String] = Option(input.decodedName.toString)
+	lazy val Name: Unapply.Fixed[Universe#Name, String] = {
+		(input:Universe#Name) => Option(input.decodedName.toString)
 	}
 
 	private[stringContextParserCombinator]

build.sbt

@@ -38,6 +38,7 @@ lazy val sharedSettings = Seq(
 		org.typelevel.scalacoptions.ScalacOptions.warnUnusedNoWarn,
 		org.typelevel.scalacoptions.ScalacOptions.privateWarnUnusedNoWarn,
 	),
+	Compile / ifDefDeclarations ++= Seq("always"),
 	Compile / ifDefDeclarations ++= (scalaBinaryVersion.value match {
 		case "2.12" | "2.13" =>
 			Seq("scalaEpochVersion:2")
@@ -98,6 +99,7 @@ lazy val sharedJsSettings = Seq(
 			),
 		)
 	},
+	Compile / ifDefDeclarations ++= Seq("platform:js"),
 )
 
 lazy val base = (projectMatrix in file("Base"))
@@ -167,11 +169,16 @@ lazy val base = (projectMatrix in file("Base"))
 				).asJava)
 		},
 	)
-	.jvmPlatform(scalaVersions = Seq(
-		scala212Ver,
-		scala213Ver,
-		scala3Ver,
-	))
+	.jvmPlatform(
+		scalaVersions = Seq(
+			scala212Ver,
+			scala213Ver,
+			scala3Ver,
+		),
+		Seq(
+			Compile / ifDefDeclarations ++= Seq("platform:jvm"),
+		),
+	)
 	.jsPlatform(
 		scalaVersions = Seq(
 			scala212Ver,
@@ -180,11 +187,16 @@ lazy val base = (projectMatrix in file("Base"))
 		),
 		sharedJsSettings,
 	)
-	.nativePlatform(scalaVersions = Seq(
-		scala212Ver,
-		scala213Ver,
-		scala3Ver,
-	))
+	.nativePlatform(
+		scalaVersions = Seq(
+			scala212Ver,
+			scala213Ver,
+			scala3Ver,
+		),
+		Seq(
+			Compile / ifDefDeclarations ++= Seq("platform:native"),
+		),
+	)
 
 lazy val json = (projectMatrix in file("JsonParser"))
 	.dependsOn(base)

project/plugins.sbt

@@ -3,6 +3,6 @@ addSbtPlugin("com.eed3si9n" % "sbt-projectmatrix" % "0.11.0")
 addSbtPlugin("com.eed3si9n.ifdef" % "sbt-ifdef" % "0.4.1")
 addSbtPlugin("com.github.sbt" % "sbt-ci-release" % "1.11.2")
 addSbtPlugin("com.typesafe" % "sbt-mima-plugin" % "1.1.4")
-addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.18.2")
+addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.20.1")
 addSbtPlugin("org.scala-native" % "sbt-scala-native" % "0.5.8")
 addSbtPlugin("org.typelevel" % "sbt-tpolecat" % "0.5.2")