fix: Remove WartRemover as it was not working properly on Scala 2.13

.scalafix.conf

@@ -1,5 +1,4 @@
 rules = [
-  SortImports
   Disable
   DisableSyntax
   LeakingImplicitClassVal
@@ -8,13 +7,7 @@ rules = [
   NoValInForComprehension
   ProcedureSyntax
   RemoveUnused
-]
-
-# the same order as IntelliJ does it, we don't want Scalafix and IDEA fight each other
-SortImports.blocks = [
-  "java."
-  "*"
-  "scala."
+  SortImports
 ]
 
 Disable.symbols = [
@@ -168,14 +161,9 @@ DisableSyntax {
   noXml = true
 }
 
-ExplicitResultTypes {
-  fatalWarnings = true
-
-  # these apply to non-implicits
-  memberKind = [Def, Val]
-  memberVisibility = [Public, Protected]
-
-  # turn to the max...
-  skipSimpleDefinitions = false
-  skipLocalImplicits = false
-}
+# IntelliJ IDEA's order in order not to fight each other
+SortImports.blocks = [
+  "java."
+  "*"
+  "scala."
+]

README.md

@@ -1,7 +1,7 @@
 # Scala Server Toolkit
 
 ![Build Status](https://github.com/avast/scala-server-toolkit/workflows/Build/badge.svg)
-[![Maven Central](https://img.shields.io/maven-central/v/com.avast/sst-bundle-zio-http4s-blaze_2.12)](https://repo1.maven.org/maven2/com/avast/sst-bundle-zio-http4s-blaze_2.12/)
+[![Maven Central](https://img.shields.io/maven-central/v/com.avast/sst-bundle-zio-http4s-blaze_2.13)](https://repo1.maven.org/maven2/com/avast/sst-bundle-zio-http4s-blaze_2.12/)
 [![Scala Steward badge](https://img.shields.io/badge/Scala_Steward-helping-brightgreen.svg?style=flat&logo=data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA4AAAAQCAMAAAARSr4IAAAAVFBMVEUAAACHjojlOy5NWlrKzcYRKjGFjIbp293YycuLa3pYY2LSqql4f3pCUFTgSjNodYRmcXUsPD/NTTbjRS+2jomhgnzNc223cGvZS0HaSD0XLjbaSjElhIr+AAAAAXRSTlMAQObYZgAAAHlJREFUCNdNyosOwyAIhWHAQS1Vt7a77/3fcxxdmv0xwmckutAR1nkm4ggbyEcg/wWmlGLDAA3oL50xi6fk5ffZ3E2E3QfZDCcCN2YtbEWZt+Drc6u6rlqv7Uk0LdKqqr5rk2UCRXOk0vmQKGfc94nOJyQjouF9H/wCc9gECEYfONoAAAAASUVORK5CYII=)](https://scala-steward.org)
 [![Mergify badge](https://img.shields.io/endpoint.svg?url=https://gh.mergify.io/badges/avast/scala-server-toolkit)](https://mergify.io)
 

build.sbt

@@ -349,7 +349,10 @@ lazy val monixCatnapPureConfig = project
   .in(file("monix-catnap-pureconfig"))
   .dependsOn(monixCatnap)
   .settings(BuildSettings.common)
-  .settings(run / fork := true, name := "sst-monix-catnap-pureconfig", libraryDependencies += Dependencies.pureConfig)
+  .settings(
+    name := "sst-monix-catnap-pureconfig",
+    libraryDependencies += Dependencies.pureConfig
+  )
 
 lazy val pureConfig = project
   .in(file("pureconfig"))

flyway/src/main/scala/com/avast/sst/flyway/FlywayModule.scala

@@ -7,7 +7,6 @@ import org.flywaydb.core.Flyway
 object FlywayModule {
 
   /** Makes [[org.flywaydb.core.Flyway]] from the given [[javax.sql.DataSource]] and config. */
-  @SuppressWarnings(Array("org.wartremover.warts.NonUnitStatements"))
   def make[F[_]: Sync](dataSource: DataSource, config: FlywayConfig): F[Flyway] = {
     Sync[F].delay {
       val builder = Flyway

grpc-server/src/main/scala/com/avast/sst/grpc/server/GrpcServerModule.scala

@@ -15,7 +15,6 @@ object GrpcServerModule {
     * @param executionContext executor to be used for the server
     * @param interceptors that are run for all the services
     */
-  @SuppressWarnings(Array("org.wartremover.warts.NonUnitStatements"))
   def make[F[_]: Sync](config: GrpcServerConfig,
                        services: Seq[ServerServiceDefinition],
                        executionContext: ExecutionContext,

http4s-client-blaze/src/main/scala/com/avast/sst/http4s/client/Http4sBlazeClientModule.scala

@@ -6,8 +6,6 @@ import org.http4s.client.Client
 import org.http4s.client.blaze.BlazeClientBuilder
 
 import scala.concurrent.ExecutionContext
-import scala.language.higherKinds
-
 object Http4sBlazeClientModule {
 
   /** Makes [[org.http4s.client.Client]] (Blaze) initialized with the given config.

http4s-server-blaze/src/main/scala/com/avast/sst/http4s/server/Http4sBlazeServerModule.scala

@@ -9,8 +9,6 @@ import org.http4s.server.blaze.BlazeServerBuilder
 
 import scala.concurrent.ExecutionContext
 import scala.concurrent.duration.Duration
-import scala.language.higherKinds
-
 object Http4sBlazeServerModule {
 
   /** Makes [[org.http4s.server.Server]] (Blaze) initialized with the given config and [[org.http4s.HttpApp]].

http4s-server-micrometer/src/main/scala/com/avast/sst/http4s/server/micrometer/MicrometerHttp4sServerMetricsModule.scala

@@ -7,8 +7,6 @@ import io.micrometer.core.instrument.MeterRegistry
 import org.http4s.HttpRoutes
 import org.http4s.server.middleware.Metrics
 
-import scala.language.higherKinds
-
 class MicrometerHttp4sServerMetricsModule[F[_]: Sync](val serverMetrics: HttpRoutes[F] => HttpRoutes[F], val routeMetrics: RouteMetrics[F])
 
 object MicrometerHttp4sServerMetricsModule {

http4s-server-micrometer/src/main/scala/com/avast/sst/http4s/server/micrometer/RouteMetrics.scala

@@ -9,8 +9,6 @@ import cats.syntax.functor._
 import io.micrometer.core.instrument.MeterRegistry
 import org.http4s.Response
 
-import scala.language.higherKinds
-
 /** Provides the usual metrics for single HTTP route. */
 class RouteMetrics[F[_]: Sync](meterRegistry: MeterRegistry, clock: Clock[F]) {
 

http4s-server/src/main/scala/com/avast/sst/http4s/server/Http4sRouting.scala

@@ -5,8 +5,6 @@ import cats.syntax.all._
 import org.http4s.syntax.kleisli._
 import org.http4s.{HttpApp, HttpRoutes}
 
-import scala.language.higherKinds
-
 object Http4sRouting {
 
   /** Makes [[org.http4s.HttpApp]] from [[org.http4s.HttpRoutes]] */

http4s-server/src/main/scala/com/avast/sst/http4s/server/middleware/CorrelationIdMiddleware.scala

@@ -11,8 +11,6 @@ import org.http4s.util.CaseInsensitiveString
 import org.http4s.{Header, HttpRoutes, Request, Response}
 import org.slf4j.LoggerFactory
 
-import scala.language.higherKinds
-
 /** Provides correlation ID functionality. Either generates new correlation ID for a request or takes the one sent in HTTP header
   * and puts it to [[org.http4s.Request]] attributes. It is also filled into HTTP response header.
   *

jvm/src/main/scala/com/avast/sst/jvm/execution/ExecutorModule.scala

@@ -16,7 +16,6 @@ import cats.effect.{Blocker, Resource, Sync}
 import com.avast.sst.jvm.execution.ConfigurableThreadFactory.Config
 
 import scala.concurrent.{ExecutionContext, ExecutionContextExecutorService}
-import scala.language.higherKinds
 
 /** Provides necessary executors - the default one for execution of your business logic and callbacks and special one designated for
   * blocking operations. Also allows you to create more executors if you need them.

jvm/src/main/scala/com/avast/sst/jvm/system/console/Console.scala

@@ -5,7 +5,6 @@ import java.io.{OutputStream, Reader}
 import cats.effect.Sync
 
 import scala.io.StdIn
-import scala.language.higherKinds
 import scala.{Console => SConsole}
 
 /** Pure console allowing to read and print lines. */

jvm/src/main/scala/com/avast/sst/jvm/system/console/ConsoleModule.scala

@@ -2,7 +2,6 @@ package com.avast.sst.jvm.system.console
 
 import cats.effect.Sync
 
-import scala.language.higherKinds
 import scala.{Console => SConsole}
 
 /** Provides console - standard in/out/err. */

jvm/src/main/scala/com/avast/sst/jvm/system/random/Random.scala

@@ -2,8 +2,6 @@ package com.avast.sst.jvm.system.random
 
 import cats.effect.Sync
 
-import scala.language.higherKinds
-
 /** Pure pseudo-random number generator based on the JVM implementation. */
 trait Random[F[_]] {
 

jvm/src/main/scala/com/avast/sst/jvm/system/random/RandomModule.scala

@@ -4,8 +4,6 @@ import java.security.SecureRandom
 
 import cats.effect.Sync
 
-import scala.language.higherKinds
-
 /** Provides random number generators. */
 object RandomModule {
 

micrometer-jmx/src/main/scala/com/avast/sst/micrometer/jmx/MicrometerJmxModule.scala

@@ -10,12 +10,9 @@ import io.micrometer.core.instrument.config.NamingConvention
 import io.micrometer.core.instrument.util.HierarchicalNameMapper
 import io.micrometer.jmx.{JmxConfig, JmxMeterRegistry}
 
-import scala.language.higherKinds
-
 object MicrometerJmxModule {
 
   /** Makes configured [[io.micrometer.jmx.JmxMeterRegistry]]. */
-  @SuppressWarnings(Array("org.wartremover.warts.NonUnitStatements"))
   def make[F[_]: Sync](config: MicrometerJmxConfig,
                        clock: Clock = Clock.SYSTEM,
                        nameMapper: HierarchicalNameMapper = HierarchicalNameMapper.DEFAULT): Resource[F, JmxMeterRegistry] = {

micrometer-jmx/src/main/scala/com/avast/sst/micrometer/jmx/TypeScopeNameObjectNameFactory.scala

@@ -23,7 +23,6 @@ private[jmx] class TypeScopeNameObjectNameFactory(separator: String = ".") exten
     parsedName.getOrElse(defaultFactory.createName(`type`, domain, name))
   }
 
-  @SuppressWarnings(Array("org.wartremover.warts.NonUnitStatements"))
   private def parseName(domain: String, name: String) = Either.catchNonFatal {
     val parts = name.split(quotedSeparator, partNames.length)
 

micrometer-statsd/src/main/scala/com/avast/sst/micrometer/statsd/MicrometerStatsDModule.scala

@@ -7,8 +7,6 @@ import io.micrometer.core.instrument.Clock
 import io.micrometer.core.instrument.util.HierarchicalNameMapper
 import io.micrometer.statsd.{StatsdConfig, StatsdFlavor, StatsdMeterRegistry, StatsdProtocol}
 
-import scala.language.higherKinds
-
 object MicrometerStatsDModule {
 
   /** Makes configured [[io.micrometer.statsd.StatsdMeterRegistry]]. */

project/BuildSettings.scala

@@ -6,8 +6,6 @@ import sbt.Keys._
 import sbt.{Def, _}
 import sbtunidoc.ScalaUnidocPlugin.autoImport._
 import scalafix.sbt.ScalafixPlugin.autoImport._
-import wartremover.Wart
-import wartremover.WartRemover.autoImport._
 
 object BuildSettings {
 
@@ -17,41 +15,22 @@ object BuildSettings {
     libraryDependencies ++= Seq(
       compilerPlugin(Dependencies.kindProjector),
       compilerPlugin(Dependencies.silencer),
-      compilerPlugin(scalafixSemanticdb), // for Scalafix
+      compilerPlugin(scalafixSemanticdb), // necessary for Scalafix
       Dependencies.silencerLib,
       Dependencies.catsEffect,
       Dependencies.logbackClassic % Test,
       Dependencies.scalaTest % Test
     ),
-    Compile / compile / wartremoverErrors ++= Warts.all filterNot Set(
-      Wart.Null, // checked by Scalafix
-      Wart.Nothing, // keep, false positives all around
-      Wart.Overloading,
-      Wart.Any, // keep, false positives all around
-      Wart.Equals, // checked by Scalafix
-      Wart.ToString, // checked by Scalafix
-      Wart.Product, // checked by Scalafix
-      Wart.Serializable, // checked by Scalafix
-      Wart.DefaultArguments // for constructors for PureConfig
-    ),
     ThisBuild / scalafixDependencies ++= Seq(
-      Dependencies.scalazzi,
-      Dependencies.sortImports
+      Dependencies.scalafixScaluzzi,
+      Dependencies.scalafixSortImports
     ),
     scalacOptions ++= Seq(
-      "-Yrangepos", // for Scalafix. required by SemanticDB compiler plugin
-      "-Ywarn-unused", // for Scalafix. not present in sbt-tpolecat for 2.13
+      "-Yrangepos", // necessary for Scalafix (required by SemanticDB compiler plugin)
+      "-Ywarn-unused", // necessary for Scalafix RemoveUnused rule (not present in sbt-tpolecat for 2.13)
       "-P:silencer:checkUnused"
     ),
-    Compile / doc / sources := Seq.empty,
-    Compile / packageDoc / publishArtifact := false,
-    Test / publishArtifact := false,
-    Test / test / wartremoverErrors := (Compile / compile / wartremoverErrors).value filterNot Set(
-      Wart.MutableDataStructures,
-      Wart.OptionPartial,
-      Wart.AsInstanceOf,
-      Wart.EitherProjectionPartial
-    )
+    Test / publishArtifact := false
   )
 
   lazy val microsite: Seq[Def.Setting[_]] = Seq(

project/Dependencies.scala

@@ -16,18 +16,18 @@ object Dependencies {
   val http4sDsl = "org.http4s" %% "http4s-dsl" % Versions.http4s
   val http4sServer = "org.http4s" %% "http4s-server" % Versions.http4s
   val jsr305 = "com.google.code.findbugs" % "jsr305" % "3.0.2"
-  val kindProjector = "org.typelevel" %% "kind-projector" % "0.10.3"
+  val kindProjector = "org.typelevel" % "kind-projector" % "0.11.0" cross CrossVersion.full
   val logbackClassic = "ch.qos.logback" % "logback-classic" % "1.2.3"
   val micrometerCore = "io.micrometer" % "micrometer-core" % Versions.micrometerCore
   val micrometerJmx = "io.micrometer" % "micrometer-registry-jmx" % Versions.micrometerJmx
   val micrometerStatsD = "io.micrometer" % "micrometer-registry-statsd" % Versions.micrometerStatsD
-  val monixEval = "io.monix" %% "monix-eval" % Versions.monix
   val monixCatnap = "io.monix" %% "monix-catnap" % Versions.monix
+  val monixEval = "io.monix" %% "monix-eval" % Versions.monix
   val postgresql = "org.postgresql" % "postgresql" % "42.2.10"
   val pureConfig = "com.github.pureconfig" %% "pureconfig" % "0.12.2"
+  val scalafixScaluzzi = "com.github.vovapolu" %% "scaluzzi" % "0.1.3"
+  val scalafixSortImports = "com.nequissimus" %% "sort-imports" % "0.3.2"
   val scalaTest = "org.scalatest" %% "scalatest" % "3.1.0"
-  val scalazzi = "com.github.vovapolu" %% "scaluzzi" % "0.1.3"
-  val sortImports = "com.nequissimus" %% "sort-imports" % "0.3.2"
   val silencer = "com.github.ghik" % "silencer-plugin" % Versions.silencer cross CrossVersion.full
   val silencerLib = "com.github.ghik" % "silencer-lib" % Versions.silencer cross CrossVersion.full
   val slf4jApi = "org.slf4j" % "slf4j-api" % "1.7.30"

project/plugins.sbt

@@ -1,6 +1,5 @@
 addSbtPlugin("io.github.davidgregory084" % "sbt-tpolecat" % "0.1.10")
 addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % "0.9.11")
-addSbtPlugin("org.wartremover" % "sbt-wartremover" % "2.4.3")
 addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.3.1")
 addSbtPlugin("com.geirsson" % "sbt-ci-release" % "1.5.2")
 addSbtPlugin("com.47deg" % "sbt-microsites" % "1.1.0")

pureconfig/src/main/scala/com/avast/sst/pureconfig/PureConfigModule.scala

@@ -6,7 +6,6 @@ import cats.syntax.either._
 import pureconfig.error.{ConfigReaderFailure, ConfigReaderFailures, ConvertFailure}
 import pureconfig.{ConfigReader, ConfigSource}
 
-import scala.language.higherKinds
 import scala.reflect.ClassTag
 
 /** Provides loading of configuration into case class via PureConfig. */

ssl-config/src/main/scala/com/avast/sst/ssl/SslContextModule.scala

@@ -10,8 +10,6 @@ import com.typesafe.sslconfig.ssl.{
 }
 import javax.net.ssl.{KeyManagerFactory, SSLContext, TrustManagerFactory}
 
-import scala.language.higherKinds
-
 object SslContextModule {
 
   /** Initializes [[javax.net.ssl.SSLContext]] from the provided config.