Switch to Scala 3 (#51)

build.sbt

@@ -3,7 +3,9 @@ import java.io.IOException
 
 val appVersion= "1.0"
 
-lazy val scalaV = "2.13.12"
+lazy val scalaV2 = "2.13.12"
+
+lazy val scalaV3 = "3.3.1"
 
 val bootstrapVersion = "5.3.2"
 
@@ -54,7 +56,7 @@ lazy val server = (project in file("server")).settings(
   version := appVersion,
   name := "zbdb-stats-server",
   scalacOptions ++= Seq("-deprecation", "-feature"),
-  scalaVersion := scalaV,
+  scalaVersion := scalaV2,
   scalaJSProjects := Seq(client),
   scalaJSStage := FullOptStage,
   Assets / pipelineStages := Seq(scalaJSPipeline),
@@ -115,7 +117,7 @@ lazy val client = (project in file("client")).settings(
   version := appVersion,
   scalacOptions ++= Seq("-deprecation", "-feature"),
   scalaJSStage := FullOptStage,
-  scalaVersion := scalaV,
+  scalaVersion := scalaV3,
   scalaJSUseMainModuleInitializer := true,
   Test / scalaJSUseMainModuleInitializer := false,
   webpack / version := "5.88.2", // https://github.com/ScalablyTyped/Converter/issues/546

client/src/main/scala/com/v6ak/zbdb/Parser.scala

@@ -96,7 +96,7 @@ object Parser{
 
   def parse(csvData: String, startTime: Moment, totalEndTime: Moment, maxHourDelta: Int, formatVersion: FormatVersion) = {
     val fullDataTable: IndexedSeq[IndexedSeq[String]] = CsvParser.parse(csvData)
-    val Seq(header1, header2, header3, dataWithTail @ _*) = fullDataTable.drop(formatVersion.headSize)
+    val Seq(header1, header2, header3, dataWithTail @ _*) = fullDataTable.drop(formatVersion.headSize) : @unchecked
     val (dataTable, footer) = formatVersion.tail.split(dataWithTail.dropWhile(_.head == "").toIndexedSeq)
     footer.foreach{fl =>
       assertEmpty(fl.toSet.filterNot(_.forall(c => c.isDigit || c==':')) -- Set("", "nejdříve na stanovišti", "nejrychleji projitý úsek", "Na trati"))
@@ -150,9 +150,9 @@ object Parser{
   private def isUsefulCell(cell: String): Boolean = cell != "" && cell != "X" && cell != "0:00"
 
   private def parseParticipant(participantData: immutable.IndexedSeq[String], parts: immutable.IndexedSeq[Part], startTime: Moment, maxHourDelta: Int, totalEndTime: Moment, formatVersion: FormatVersion): Participant = {
-    val Seq(num, participantDataAfterNum@_*) = participantData
+    val Seq(num, participantDataAfterNum@_*) = participantData : @unchecked
     val (firstName, lastName, nick, participantDataAfterName) = formatVersion.nameFormat.parse(participantDataAfterNum)
-    val Seq(genderString, ageString, other@_*) = participantDataAfterName
+    val Seq(genderString, ageString, other@_*) = participantDataAfterName : @unchecked
     if ((formatVersion.ageType == AgeType.No) && (ageString != "")) {
       sys.error("You seem to have left some data in age column. Clean it first, please.")
     }

client/src/main/scala/com/v6ak/zbdb/ParticipantTable.scala

@@ -27,7 +27,7 @@ final case class ParticipantTable (startTime: Moment, parts: Seq[Part], data: Se
     }
     val finishedParticipantsInContext = finishedParticipantsGroups.flatten
     val bestTotalTimeOption = finishedParticipantsInContext.headOption.map(_.totalTime)
-    val unfinishedParticipantsInContext = unfinishedParticipants.map(ParticipantInContext.Failed)
+    val unfinishedParticipantsInContext = unfinishedParticipants.map(ParticipantInContext.Failed.apply)
     val allParticipantsInContext = finishedParticipantsInContext ++ unfinishedParticipantsInContext
     (allParticipantsInContext.map(pic => pic.participant -> pic).toMap, bestTotalTimeOption)
   }
@@ -144,7 +144,7 @@ final case class ParticipantTable (startTime: Moment, parts: Seq[Part], data: Se
         row.partTimes lazyZip
         nextPartInfos
     )
-      .map(FullPartInfo)
+      .map(FullPartInfo.apply)
       .zipWithIndex
       .flatMap((partWalkEvents(row) _).tupled)
   }