From 1e10509cd3b832bb086564aa24df5e1338e810da Mon Sep 17 00:00:00 2001
From: Jan Chyb <jan.chyb.99@gmail.com>
Date: Tue, 24 Sep 2024 18:22:42 +0200
Subject: [PATCH] Allow to compile with Scala Native

Adds Regexes for scala native, splits up uses of certain
Collections, System.console, and metaconfig.
Also moves some tests to a JVM only directory.
---
 .github/workflows/ci.yml                      |  27 ++-
 build.sbt                                     | 100 ++++----
 docs/contributing-scalafmt.md                 |   2 +-
 project/Dependencies.scala                    |   5 +-
 project/plugins.sbt                           |   8 +-
 .../org/scalafmt/cli/CliOptionsUtils.scala    |   8 +
 .../scala/org/scalafmt/cli/CliUtils.scala     |  35 +++
 .../scala/org/scalafmt/cli/TermUtils.scala    |  13 +
 .../org/scalafmt/cli/CliOptionsUtils.scala    |   7 +
 .../scala/org/scalafmt/cli/CliUtils.scala     |   7 +
 .../scala/org/scalafmt/cli/TermUtils.scala    |   9 +
 .../src/main/scala/org/scalafmt/cli/Cli.scala |  35 +--
 .../scala/org/scalafmt/cli/CliOptions.scala   |  16 +-
 .../org/scalafmt/cli/ScalafmtCoreRunner.scala |   2 +-
 .../scalafmt/cli/ScalafmtDynamicRunner.scala  |   2 +-
 .../scala/org/scalafmt/cli/TermDisplay.scala  |  11 +-
 .../org/scalafmt/config/PlatformConfig.scala  |   7 +
 .../org/scalafmt/config/PlatformConfig.scala  |   5 +
 .../org/scalafmt/config/PlatformConfig.scala  |  15 ++
 .../org/scalafmt/config/ConfParsed.scala      |   2 +-
 .../org/scalafmt/internal/RegexCompat.scala   | 222 ++++++++++++++++++
 .../org/scalafmt/CompatCollections.scala      |  10 +
 .../org/scalafmt/CompatCollections.scala      |  12 +
 .../org/scalafmt/sysops/PlatformCompat.scala  |   5 +
 .../org/scalafmt/CompatCollections.scala      |  11 +
 .../org/scalafmt/CompatCollections.scala      |  14 ++
 .../org/scalafmt/sysops/PlatformCompat.scala  |   5 +
 .../org/scalafmt/CompatCollections.scala      |   6 -
 .../org/scalafmt/CompatCollections.scala      |   6 -
 .../scala/org/scalafmt/sysops/FileOps.scala   |  12 +-
 .../org/scalafmt/community/TestHelpers.scala  |   4 +-
 .../scala/org/scalafmt/ScalafmtProps.scala    |   2 +-
 .../org/scalafmt/cli/CliOptionsJVMTest.scala  |  25 ++
 .../org/scalafmt/sysops/FileOpsJVMTest.scala  |  14 ++
 .../org/scalafmt/cli/CliOptionsTest.scala     |  15 --
 .../test/scala/org/scalafmt/cli/CliTest.scala |   3 +-
 .../org/scalafmt/sysops/FileOpsTest.scala     |  11 -
 37 files changed, 550 insertions(+), 143 deletions(-)
 create mode 100644 scalafmt-cli/jvm/src/main/scala/org/scalafmt/cli/CliOptionsUtils.scala
 create mode 100644 scalafmt-cli/jvm/src/main/scala/org/scalafmt/cli/CliUtils.scala
 create mode 100644 scalafmt-cli/jvm/src/main/scala/org/scalafmt/cli/TermUtils.scala
 create mode 100644 scalafmt-cli/native/src/main/scala/org/scalafmt/cli/CliOptionsUtils.scala
 create mode 100644 scalafmt-cli/native/src/main/scala/org/scalafmt/cli/CliUtils.scala
 create mode 100644 scalafmt-cli/native/src/main/scala/org/scalafmt/cli/TermUtils.scala
 create mode 100644 scalafmt-config/native/src/main/scala/org/scalafmt/config/PlatformConfig.scala
 create mode 100644 scalafmt-core/native/src/main/scala/org/scalafmt/internal/RegexCompat.scala
 create mode 100644 scalafmt-sysops/jvm/src/main/scala-2.12/org/scalafmt/CompatCollections.scala
 create mode 100644 scalafmt-sysops/jvm/src/main/scala-2.13/org/scalafmt/CompatCollections.scala
 create mode 100644 scalafmt-sysops/jvm/src/main/scala/org/scalafmt/sysops/PlatformCompat.scala
 create mode 100644 scalafmt-sysops/native/src/main/scala-2.12/org/scalafmt/CompatCollections.scala
 create mode 100644 scalafmt-sysops/native/src/main/scala-2.13/org/scalafmt/CompatCollections.scala
 create mode 100644 scalafmt-sysops/native/src/main/scala/org/scalafmt/sysops/PlatformCompat.scala
 delete mode 100644 scalafmt-sysops/shared/src/main/scala-2.12/org/scalafmt/CompatCollections.scala
 delete mode 100644 scalafmt-sysops/shared/src/main/scala-2.13/org/scalafmt/CompatCollections.scala
 rename scalafmt-tests/{shared => jvm}/src/test/scala/org/scalafmt/ScalafmtProps.scala (99%)
 create mode 100644 scalafmt-tests/jvm/src/test/scala/org/scalafmt/cli/CliOptionsJVMTest.scala
 create mode 100644 scalafmt-tests/jvm/src/test/scala/org/scalafmt/sysops/FileOpsJVMTest.scala

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 53e1db7d24..3d084df099 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -33,9 +33,32 @@ jobs:
       - run:
           # for GitOps tests
           git config --global user.email "scalafmt@scalameta.org" && git config --global user.name "scalafmt"
-      - run: TEST="2.12" sbt ci-test
+      - run: TEST="2.12" sbt ci-test-jvm
         shell: bash
-      - run: TEST="2.13" sbt ci-test
+      - run: TEST="2.13" sbt ci-test-jvm
+        shell: bash
+  test-scala-native:
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [windows-latest, ubuntu-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Set up JVM
+        uses: actions/setup-java@v4
+        with:
+          java-version: '21'
+          distribution: 'temurin'
+          cache: 'sbt'
+      - run:
+          # for GitOps tests
+          git config --global user.email "scalafmt@scalameta.org" && git config --global user.name "scalafmt"
+      - run: TEST="2.12" sbt ci-test-native
+        shell: bash
+      - run: TEST="2.13" sbt ci-test-native
         shell: bash
   community-test:
     strategy:
diff --git a/build.sbt b/build.sbt
index ad7224be98..4d999a1374 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1,5 +1,7 @@
 import java.nio.file.Paths
 
+import scala.scalanative.build._
+
 import Dependencies._
 import sbtcrossproject.CrossPlugin.autoImport.crossProject
 
@@ -32,8 +34,6 @@ inThisBuild(List(
   crossScalaVersions := List(scala213, scala212),
   resolvers ++= Resolver.sonatypeOssRepos("releases"),
   resolvers ++= Resolver.sonatypeOssRepos("snapshots"),
-  libraryDependencies ++=
-    List(munit.value % Test, scalacheck % Test, scalametaTestkit % Test),
   testFrameworks += new TestFramework("munit.Framework"),
 ))
 
@@ -41,8 +41,9 @@ name := "scalafmtRoot"
 publish / skip := true
 
 addCommandAlias("native-image", "cli/nativeImage")
+addCommandAlias("scala-native", "cliNative/compile;cliNative/nativeLink")
 
-commands += Command.command("ci-test") { s =>
+commands += Command.command("ci-test-jvm") { s =>
   val scalaVersion = sys.env.get("TEST") match {
     case Some("2.12") => scala212
     case _ => scala213
@@ -52,8 +53,16 @@ commands += Command.command("ci-test") { s =>
     docsTest :: s
 }
 
-lazy val dynamic = crossProject(JVMPlatform).withoutSuffixFor(JVMPlatform)
-  .in(file("scalafmt-dynamic")).settings(
+commands += Command.command("ci-test-native") { s =>
+  val scalaVersion = sys.env.get("TEST") match {
+    case Some("2.12") => scala212
+    case _ => scala213
+  }
+  s"++$scalaVersion" :: "testsNative/test" :: s
+}
+
+lazy val dynamic = crossProject(JVMPlatform, NativePlatform)
+  .withoutSuffixFor(JVMPlatform).in(file("scalafmt-dynamic")).settings(
     moduleName := "scalafmt-dynamic",
     description := "Implementation of scalafmt-interfaces",
     buildInfoSettings,
@@ -63,14 +72,14 @@ lazy val dynamic = crossProject(JVMPlatform).withoutSuffixFor(JVMPlatform)
       "io.get-coursier" % "interface" % "0.0.17",
       "com.typesafe" % "config" % "1.4.3",
       munit.value % Test,
-      scalametaTestkit % Test,
+      scalametaTestkit.value % Test,
     ),
     scalacOptions ++= scalacJvmOptions.value,
   ).dependsOn(interfaces, sysops).dependsOn(core % "test")
   .enablePlugins(BuildInfoPlugin)
 
-lazy val interfaces = crossProject(JVMPlatform).withoutSuffixFor(JVMPlatform)
-  .in(file("scalafmt-interfaces")).settings(
+lazy val interfaces = crossProject(JVMPlatform, NativePlatform)
+  .withoutSuffixFor(JVMPlatform).in(file("scalafmt-interfaces")).settings(
     moduleName := "scalafmt-interfaces",
     description :=
       "Dependency-free, pure Java public interfaces to integrate with Scalafmt through a build tool or editor plugin.",
@@ -86,8 +95,8 @@ lazy val interfaces = crossProject(JVMPlatform).withoutSuffixFor(JVMPlatform)
     },
   )
 
-lazy val sysops = crossProject(JVMPlatform).withoutSuffixFor(JVMPlatform)
-  .in(file("scalafmt-sysops")).settings(
+lazy val sysops = crossProject(JVMPlatform, NativePlatform)
+  .withoutSuffixFor(JVMPlatform).in(file("scalafmt-sysops")).settings(
     moduleName := "scalafmt-sysops",
     description := "Scalafmt systems operations",
     scalacOptions ++= scalacJvmOptions.value,
@@ -102,45 +111,48 @@ lazy val sysops = crossProject(JVMPlatform).withoutSuffixFor(JVMPlatform)
     },
   )
 
-lazy val config = crossProject(JVMPlatform).withoutSuffixFor(JVMPlatform)
-  .in(file("scalafmt-config")).settings(
+lazy val config = crossProject(JVMPlatform, NativePlatform)
+  .withoutSuffixFor(JVMPlatform).in(file("scalafmt-config")).settings(
     moduleName := "scalafmt-config",
     description := "Scalafmt config parsing",
     scalacOptions ++= scalacJvmOptions.value,
     libraryDependencies ++= Seq(metaconfig.value),
   ).jvmSettings(libraryDependencies ++= Seq(metaconfigTypesafe.value))
+  .nativeSettings(libraryDependencies ++= Seq(metaconfigSconfig.value))
 // .jsSettings(
 //   libraryDependencies ++= Seq(
 //     metaconfigHocon.value,
 //   )
 // )
 
-lazy val core = crossProject(JVMPlatform).in(file("scalafmt-core")).settings(
-  moduleName := "scalafmt-core",
-  buildInfoSettings,
-  scalacOptions ++= scalacJvmOptions.value,
-  libraryDependencies ++= Seq("org.scalameta" %% "mdoc-parser" % mdocV),
-  libraryDependencies ++= {
-    CrossVersion.partialVersion(scalaVersion.value) match {
-      case Some((2, 13)) => Seq()
-      case _ => Seq(compilerPlugin(
-          "org.scalamacros" % "paradise" % "2.1.1" cross CrossVersion.full,
-        ))
-    }
-  },
-)
+lazy val core = crossProject(JVMPlatform, NativePlatform)
+  .in(file("scalafmt-core")).settings(
+    moduleName := "scalafmt-core",
+    buildInfoSettings,
+    scalacOptions ++= scalacJvmOptions.value,
+    libraryDependencies ++= Seq("org.scalameta" %%% "mdoc-parser" % mdocV),
+    libraryDependencies ++= {
+      CrossVersion.partialVersion(scalaVersion.value) match {
+        case Some((2, 13)) => Seq()
+        case _ => Seq(compilerPlugin(
+            "org.scalamacros" % "paradise" % "2.1.1" cross CrossVersion.full,
+          ))
+      }
+    },
+  )
   // .jsSettings(
   //   libraryDependencies ++= List(
   //     scalatest.value % Test // must be here for coreJS/test to run anything
   //   )
   // )
+  .nativeSettings(libraryDependencies += "com.lihaoyi" %%% "fastparse" % "3.1.1")
   .jvmSettings(Test / run / fork := true).dependsOn(sysops, config, macros)
   .enablePlugins(BuildInfoPlugin)
 lazy val coreJVM = core.jvm
 // lazy val coreJS = core.js
 
-lazy val macros = crossProject(JVMPlatform).in(file("scalafmt-macros"))
-  .settings(
+lazy val macros = crossProject(JVMPlatform, NativePlatform)
+  .in(file("scalafmt-macros")).settings(
     moduleName := "scalafmt-macros",
     buildInfoSettings,
     scalacOptions ++= scalacJvmOptions.value,
@@ -165,8 +177,8 @@ val scalacJvmOptions = Def.setting {
   cross ++ unused
 }
 
-lazy val cli = crossProject(JVMPlatform).withoutSuffixFor(JVMPlatform)
-  .in(file("scalafmt-cli")).settings(
+lazy val cli = crossProject(JVMPlatform, NativePlatform)
+  .withoutSuffixFor(JVMPlatform).in(file("scalafmt-cli")).settings(
     moduleName := "scalafmt-cli",
     assembly / mainClass := Some("org.scalafmt.cli.Cli"),
     assembly / assemblyOption := (assembly / assemblyOption).value
@@ -179,9 +191,9 @@ lazy val cli = crossProject(JVMPlatform).withoutSuffixFor(JVMPlatform)
         oldStrategy(x)
     },
     libraryDependencies ++= Seq(
-      "org.scalameta" %% "munit-diff" % "1.0.2",
+      "org.scalameta" %%% "munit-diff" % "1.0.2",
       "com.martiansoftware" % "nailgun-server" % "0.9.1",
-      "com.github.scopt" %% "scopt" % "4.1.0",
+      "com.github.scopt" %%% "scopt" % "4.1.0",
     ),
     scalacOptions ++= scalacJvmOptions.value,
     Compile / mainClass := Some("org.scalafmt.cli.Cli"),
@@ -195,33 +207,35 @@ lazy val cli = crossProject(JVMPlatform).withoutSuffixFor(JVMPlatform)
       val isStatic = sys.env.get("NATIVE_IMAGE_STATIC").exists(_.toBoolean)
       if (isStatic) Seq("--static") else Nil
     },
-  ).dependsOn(core, dynamic).enablePlugins(NativeImagePlugin)
+  ).nativeSettings(scalaNativeConfig).dependsOn(core, dynamic)
+  .enablePlugins(NativeImagePlugin)
 
-lazy val tests = crossProject(JVMPlatform).withoutSuffixFor(JVMPlatform)
-  .in(file("scalafmt-tests")).settings(
+lazy val tests = crossProject(JVMPlatform, NativePlatform)
+  .withoutSuffixFor(JVMPlatform).in(file("scalafmt-tests")).settings(
     publish / skip := true,
     libraryDependencies ++= Seq(
       // Test dependencies
-      "com.lihaoyi" %% "scalatags" % "0.13.1",
-      scalametaTestkit,
+      "com.lihaoyi" %%% "scalatags" % "0.13.1",
+      scalametaTestkit.value,
       munit.value,
     ),
     scalacOptions ++= scalacJvmOptions.value,
-    javaOptions += "-Dfile.encoding=UTF8",
     buildInfoPackage := "org.scalafmt.tests",
     buildInfoKeys := Seq[BuildInfoKey]("resourceDirectory" -> {
       val sharedTests = (baseDirectory.value.getParentFile / "shared").toPath
       (Test / resourceDirectories).value.find(_.toPath.startsWith(sharedTests))
         .get
     }),
-  ).enablePlugins(BuildInfoPlugin).dependsOn(core, dynamic, cli)
+  ).enablePlugins(BuildInfoPlugin)
+  .jvmSettings(javaOptions += "-Dfile.encoding=UTF8")
+  .dependsOn(core, dynamic, cli)
 
 lazy val communityTests = project.in(file("scalafmt-tests-community")).settings(
   publish / skip := true,
   libraryDependencies ++= Seq(
     // Test dependencies
-    "com.lihaoyi" %% "scalatags" % "0.13.1",
-    scalametaTestkit,
+    "com.lihaoyi" %%% "scalatags" % "0.13.1",
+    scalametaTestkit.value,
     munit.value,
   ),
   scalacOptions ++= scalacJvmOptions.value,
@@ -232,7 +246,7 @@ lazy val communityTests = project.in(file("scalafmt-tests-community")).settings(
 lazy val benchmarks = project.in(file("scalafmt-benchmarks")).settings(
   publish / skip := true,
   moduleName := "scalafmt-benchmarks",
-  libraryDependencies ++= Seq(scalametaTestkit),
+  libraryDependencies ++= Seq(scalametaTestkit.value),
   run / javaOptions ++= Seq(
     "-Djava.net.preferIPv4Stack=true",
     "-XX:+AggressiveOpts",
@@ -284,3 +298,5 @@ lazy val buildInfoSettings: Seq[Def.Setting[_]] = Seq(
   buildInfoPackage := "org.scalafmt",
   buildInfoObject := "Versions",
 )
+
+lazy val scalaNativeConfig = nativeConfig ~= { _.withMode(Mode.releaseFull) }
diff --git a/docs/contributing-scalafmt.md b/docs/contributing-scalafmt.md
index 3eaf733247..1668390168 100644
--- a/docs/contributing-scalafmt.md
+++ b/docs/contributing-scalafmt.md
@@ -80,7 +80,7 @@ To build a native image of the command-line interface using
 
 - From the project root directory,
   - run `sbt cli/assembly`
-  - run `java -jar scalafmt-cli/target/scala-2.13/scalafmt.jar`, to execute recently built artifacts
+  - run `java -jar scalafmt-cli/jvm/target/scala-2.13/scalafmt.jar`, to execute recently built artifacts
 
 ## Random stuff
 
diff --git a/project/Dependencies.scala b/project/Dependencies.scala
index 64fcd273fa..6e641fad49 100644
--- a/project/Dependencies.scala
+++ b/project/Dependencies.scala
@@ -21,7 +21,7 @@ object Dependencies {
     )
   }
 
-  val scalametaTestkit = "org.scalameta" %% "testkit" % scalametaV
+  val scalametaTestkit = Def.setting("org.scalameta" %%% "testkit" % scalametaV)
 
   val scalacheck = "org.scalacheck" %% "scalacheck" % scalacheckV
   val munit      = Def.setting("org.scalameta" %%% "munit" % munitV)
@@ -31,6 +31,7 @@ object Dependencies {
   val metaconfig = Def.setting("org.scalameta" %%% "metaconfig-core" % metaconfigV)
   val metaconfigTypesafe = Def
     .setting("org.scalameta" %%% "metaconfig-typesafe-config" % metaconfigV)
-  val metaconfigHocon = Def.setting("com.geirsson" %%% "metaconfig-hocon" % metaconfigV)
+  val metaconfigHocon   = Def.setting("com.geirsson" %%% "metaconfig-hocon" % metaconfigV)
+  val metaconfigSconfig = Def.setting("org.scalameta" %%% "metaconfig-sconfig" % metaconfigV)
 
 }
diff --git a/project/plugins.sbt b/project/plugins.sbt
index 929f223b48..80fc50b9f8 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -4,6 +4,8 @@ resolvers ++= Seq(
   Resolver.bintrayIvyRepo("jetbrains", "sbt-plugins"),
 )
 
+val crossProjectV = "1.3.2"
+
 addSbtPlugin("org.scalameta" % "sbt-mdoc" % "2.6.1")
 addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.5.2")
 addSbtPlugin("com.github.sbt" % "sbt-ci-release" % "1.6.1")
@@ -12,6 +14,10 @@ addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "2.2.0")
 addSbtPlugin("org.scalameta" % "sbt-native-image" % "0.3.4")
 addSbtPlugin("pl.project13.scala" % "sbt-jmh" % "0.4.7")
 addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.16.0")
-addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % "1.3.2")
+addSbtPlugin(
+  "org.portable-scala" % "sbt-scala-native-crossproject" % crossProjectV,
+)
+addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % crossProjectV)
 addSbtPlugin("com.typesafe" % "sbt-mima-plugin" % "1.1.4")
 addSbtPlugin("com.github.sbt" % "sbt-native-packager" % "1.10.4")
+addSbtPlugin("org.scala-native" % "sbt-scala-native" % "0.5.5")
diff --git a/scalafmt-cli/jvm/src/main/scala/org/scalafmt/cli/CliOptionsUtils.scala b/scalafmt-cli/jvm/src/main/scala/org/scalafmt/cli/CliOptionsUtils.scala
new file mode 100644
index 0000000000..ed5ca142fb
--- /dev/null
+++ b/scalafmt-cli/jvm/src/main/scala/org/scalafmt/cli/CliOptionsUtils.scala
@@ -0,0 +1,8 @@
+package org.scalafmt.cli
+
+import java.io.PrintWriter
+
+private[scalafmt] trait CliOptionsUtils {
+  def getConsoleWriter(): Option[PrintWriter] = Option(System.console())
+    .map(_.writer)
+}
diff --git a/scalafmt-cli/jvm/src/main/scala/org/scalafmt/cli/CliUtils.scala b/scalafmt-cli/jvm/src/main/scala/org/scalafmt/cli/CliUtils.scala
new file mode 100644
index 0000000000..ea384367b5
--- /dev/null
+++ b/scalafmt-cli/jvm/src/main/scala/org/scalafmt/cli/CliUtils.scala
@@ -0,0 +1,35 @@
+package org.scalafmt.cli
+
+import org.scalafmt.sysops.AbsoluteFile
+
+import com.martiansoftware.nailgun.NGContext
+
+private[scalafmt] trait CliUtils {
+  protected val isScalaNative: Boolean = false
+
+  def nailMain(nGContext: NGContext): Unit = {
+    val workingDirectory = AbsoluteFile.fromPathIfAbsolute(
+      nGContext.getWorkingDirectory,
+    ).getOrElse {
+      throw new IllegalStateException(
+        s"Expected absolute path, " +
+          s"obtained nGContext.getWorkingDirectory = ${nGContext.getWorkingDirectory}",
+      )
+    }
+    val exit = Cli.mainWithOptions(
+      nGContext.getArgs,
+      CliOptions.default.copy(common =
+        CliOptions.default.common.copy(
+          cwd = Some(workingDirectory),
+          out = nGContext.out,
+          in = nGContext.in,
+          err = nGContext.err,
+        ),
+      ),
+    )
+    nGContext.exit(exit.code)
+  }
+
+  protected def getDynamicRunner(): ScalafmtRunner = ScalafmtDynamicRunner
+
+}
diff --git a/scalafmt-cli/jvm/src/main/scala/org/scalafmt/cli/TermUtils.scala b/scalafmt-cli/jvm/src/main/scala/org/scalafmt/cli/TermUtils.scala
new file mode 100644
index 0000000000..b2fc2f9297
--- /dev/null
+++ b/scalafmt-cli/jvm/src/main/scala/org/scalafmt/cli/TermUtils.scala
@@ -0,0 +1,13 @@
+package org.scalafmt.cli
+
+import java.sql.Timestamp
+
+private[scalafmt] trait TermUtils {
+
+  // Copy/pasted over from coursier, but unused in scalafmt
+  private val format = new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:ss")
+  protected def formatTimestamp(ts: Long): String = format
+    .format(new Timestamp(ts))
+
+  def noConsole = System.console() == null
+}
diff --git a/scalafmt-cli/native/src/main/scala/org/scalafmt/cli/CliOptionsUtils.scala b/scalafmt-cli/native/src/main/scala/org/scalafmt/cli/CliOptionsUtils.scala
new file mode 100644
index 0000000000..c3645a2c52
--- /dev/null
+++ b/scalafmt-cli/native/src/main/scala/org/scalafmt/cli/CliOptionsUtils.scala
@@ -0,0 +1,7 @@
+package org.scalafmt.cli
+
+import java.io.PrintWriter
+
+private[scalafmt] trait CliOptionsUtils {
+  def getConsoleWriter(): Option[PrintWriter] = None
+}
diff --git a/scalafmt-cli/native/src/main/scala/org/scalafmt/cli/CliUtils.scala b/scalafmt-cli/native/src/main/scala/org/scalafmt/cli/CliUtils.scala
new file mode 100644
index 0000000000..48e2cdc40f
--- /dev/null
+++ b/scalafmt-cli/native/src/main/scala/org/scalafmt/cli/CliUtils.scala
@@ -0,0 +1,7 @@
+package org.scalafmt.cli
+
+private[scalafmt] trait CliUtils {
+  protected val isScalaNative: Boolean = true
+
+  protected def getDynamicRunner(): ScalafmtRunner = ???
+}
diff --git a/scalafmt-cli/native/src/main/scala/org/scalafmt/cli/TermUtils.scala b/scalafmt-cli/native/src/main/scala/org/scalafmt/cli/TermUtils.scala
new file mode 100644
index 0000000000..54038f2210
--- /dev/null
+++ b/scalafmt-cli/native/src/main/scala/org/scalafmt/cli/TermUtils.scala
@@ -0,0 +1,9 @@
+package org.scalafmt.cli
+
+private[scalafmt] trait TermUtils {
+
+  // Copy/pasted over from coursier, but not used in scalafmt
+  protected def formatTimestamp(ts: Long): String = ???
+
+  def noConsole = false
+}
diff --git a/scalafmt-cli/shared/src/main/scala/org/scalafmt/cli/Cli.scala b/scalafmt-cli/shared/src/main/scala/org/scalafmt/cli/Cli.scala
index aae5e0f24b..5e7ccb1829 100644
--- a/scalafmt-cli/shared/src/main/scala/org/scalafmt/cli/Cli.scala
+++ b/scalafmt-cli/shared/src/main/scala/org/scalafmt/cli/Cli.scala
@@ -1,7 +1,6 @@
 package org.scalafmt.cli
 
 import org.scalafmt.Versions.{stable => stableVersion}
-import org.scalafmt.sysops.AbsoluteFile
 
 import java.nio.file.Files
 import java.nio.file.Paths
@@ -10,31 +9,7 @@ import scala.io.Source
 import scala.util.Using
 import scala.util.control.NoStackTrace
 
-import com.martiansoftware.nailgun.NGContext
-
-object Cli {
-  def nailMain(nGContext: NGContext): Unit = {
-    val workingDirectory = AbsoluteFile.fromPathIfAbsolute(
-      nGContext.getWorkingDirectory,
-    ).getOrElse {
-      throw new IllegalStateException(
-        s"Expected absolute path, " +
-          s"obtained nGContext.getWorkingDirectory = ${nGContext.getWorkingDirectory}",
-      )
-    }
-    val exit = mainWithOptions(
-      nGContext.getArgs,
-      CliOptions.default.copy(common =
-        CliOptions.default.common.copy(
-          cwd = Some(workingDirectory),
-          out = nGContext.out,
-          in = nGContext.in,
-          err = nGContext.err,
-        ),
-      ),
-    )
-    nGContext.exit(exit.code)
-  }
+object Cli extends CliUtils {
 
   private def throwIfError(exit: ExitCode): Unit = if (exit != ExitCode.Ok)
     throw new RuntimeException(exit.toString) with NoStackTrace
@@ -86,8 +61,8 @@ object Cli {
       case Right(runner) => runWithRunner(options, runner)
     }
 
-  private val isNativeImage: Boolean = "true" ==
-    System.getProperty("scalafmt.native-image", "false")
+  private val isNative: Boolean = isScalaNative ||
+    ("true" == System.getProperty("scalafmt.native-image", "false"))
 
   private def getProposedConfigVersion(options: CliOptions): String =
     s"version = $stableVersion"
@@ -125,7 +100,7 @@ object Cli {
         case Right(`stableVersion`) =>
           options.common.debug.println(s"Using core runner [$stableVersion]")
           Right(ScalafmtCoreRunner)
-        case Right(v) if isNativeImage =>
+        case Right(v) if isNative =>
           Left(
             s"""|error: invalid Scalafmt version.
                 |
@@ -142,7 +117,7 @@ object Cli {
           )
         case Right(v) =>
           options.common.debug.println(s"Using dynamic runner [$v]")
-          Right(ScalafmtDynamicRunner)
+          Right(getDynamicRunner())
       }
     }
 
diff --git a/scalafmt-cli/shared/src/main/scala/org/scalafmt/cli/CliOptions.scala b/scalafmt-cli/shared/src/main/scala/org/scalafmt/cli/CliOptions.scala
index 3fd4a0e119..30c0848a13 100644
--- a/scalafmt-cli/shared/src/main/scala/org/scalafmt/cli/CliOptions.scala
+++ b/scalafmt-cli/shared/src/main/scala/org/scalafmt/cli/CliOptions.scala
@@ -20,7 +20,7 @@ import scala.util.matching.Regex
 
 import metaconfig.Configured
 
-object CliOptions {
+object CliOptions extends CliOptionsUtils {
   val default = CliOptions()
 
   /** Tries to read configuration from
@@ -40,12 +40,14 @@ object CliOptions {
       if (parsed.quiet) Output.NoopStream
       else {
         val usesOut = parsed.stdIn || parsed.writeMode.usesOut
-        val cons = if (usesOut) System.console() else null
-        if (cons ne null) new Output.FromWriter(cons.writer())
-        else new Output.FromStream(
-          if (parsed.noStdErr || !usesOut) parsed.common.out
-          else parsed.common.err,
-        )
+        val consWriterOpt = if (usesOut) getConsoleWriter() else None
+        consWriterOpt match {
+          case Some(writer) => new Output.FromWriter(writer)
+          case None => new Output.FromStream(
+              if (parsed.noStdErr || !usesOut) parsed.common.out
+              else parsed.common.err,
+            )
+        }
       }
     val common = parsed.common.copy(
       out = guardPrintStream(parsed.quiet && !parsed.stdIn)(parsed.common.out),
diff --git a/scalafmt-cli/shared/src/main/scala/org/scalafmt/cli/ScalafmtCoreRunner.scala b/scalafmt-cli/shared/src/main/scala/org/scalafmt/cli/ScalafmtCoreRunner.scala
index 607a821250..823630ab6e 100644
--- a/scalafmt-cli/shared/src/main/scala/org/scalafmt/cli/ScalafmtCoreRunner.scala
+++ b/scalafmt-cli/shared/src/main/scala/org/scalafmt/cli/ScalafmtCoreRunner.scala
@@ -41,7 +41,7 @@ object ScalafmtCoreRunner extends ScalafmtRunner {
     val termDisplay = newTermDisplay(options, inputMethods, termDisplayMessage)
     val exitCode = new AtomicReference(ExitCode.Ok)
     Breaks.breakable {
-      inputMethods.par.foreach { inputMethod =>
+      inputMethods.compatPar.foreach { inputMethod =>
         val code = handleFile(inputMethod, options, adjustedScalafmtConf)
         exitCode.getAndUpdate(ExitCode.merge(code, _))
         if (options.check && !code.isOk) Breaks.break
diff --git a/scalafmt-cli/shared/src/main/scala/org/scalafmt/cli/ScalafmtDynamicRunner.scala b/scalafmt-cli/shared/src/main/scala/org/scalafmt/cli/ScalafmtDynamicRunner.scala
index f37e36ea1c..e1118203c2 100644
--- a/scalafmt-cli/shared/src/main/scala/org/scalafmt/cli/ScalafmtDynamicRunner.scala
+++ b/scalafmt-cli/shared/src/main/scala/org/scalafmt/cli/ScalafmtDynamicRunner.scala
@@ -39,7 +39,7 @@ object ScalafmtDynamicRunner extends ScalafmtRunner {
 
     val exitCode = new AtomicReference(ExitCode.Ok)
     breakable {
-      inputMethods.par.foreach { inputMethod =>
+      inputMethods.compatPar.foreach { inputMethod =>
         try {
           val code = handleFile(inputMethod, session, options)
           exitCode.getAndUpdate(ExitCode.merge(code, _))
diff --git a/scalafmt-cli/shared/src/main/scala/org/scalafmt/cli/TermDisplay.scala b/scalafmt-cli/shared/src/main/scala/org/scalafmt/cli/TermDisplay.scala
index 1cdb6246e1..ad239035c5 100644
--- a/scalafmt-cli/shared/src/main/scala/org/scalafmt/cli/TermDisplay.scala
+++ b/scalafmt-cli/shared/src/main/scala/org/scalafmt/cli/TermDisplay.scala
@@ -8,7 +8,6 @@ package org.scalafmt.cli
   */
 import java.io.File
 import java.io.Writer
-import java.sql.Timestamp
 import java.util.concurrent._
 
 import scala.annotation.tailrec
@@ -62,7 +61,7 @@ object Terminal {
 
 }
 
-object TermDisplay {
+object TermDisplay extends TermUtils {
 
   def defaultFallbackMode: Boolean = {
     val env0 = sys.env.get("COURSIER_PROGRESS").map(_.toLowerCase).collect {
@@ -71,7 +70,7 @@ object TermDisplay {
     }
     def compatibilityEnv = sys.env.contains("COURSIER_NO_TERM")
 
-    def nonInteractive = System.console() == null
+    def nonInteractive = noConsole
 
     def insideEmacs = sys.env.contains("INSIDE_EMACS")
     def ci = sys.env.contains("CI")
@@ -108,10 +107,6 @@ object TermDisplay {
     }
   }
 
-  private val format = new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:ss")
-  private def formatTimestamp(ts: Long): String = format
-    .format(new Timestamp(ts))
-
   private case class CheckUpdateInfo(
       currentTimeOpt: Option[Long],
       remoteTimeOpt: Option[Long],
@@ -159,7 +154,7 @@ object TermDisplay {
     private var width = 80
     private var currentHeight = 0
 
-    private val q = new LinkedBlockingDeque[Message]
+    private val q = new LinkedBlockingQueue[Message]
 
     def update(): Unit = if (q.size() == 0) q.put(Message.Update)
 
diff --git a/scalafmt-config/js/src/main/scala/org/scalafmt/config/PlatformConfig.scala b/scalafmt-config/js/src/main/scala/org/scalafmt/config/PlatformConfig.scala
index 544a805f54..ff1345d752 100644
--- a/scalafmt-config/js/src/main/scala/org/scalafmt/config/PlatformConfig.scala
+++ b/scalafmt-config/js/src/main/scala/org/scalafmt/config/PlatformConfig.scala
@@ -1,5 +1,12 @@
 package org.scalafmt.config
 
+import java.nio.file.Path
+
+import metaconfig.Input
+import metaconfig.MetaconfigParser
+
 object PlatformConfig {
+  val isScalaNative = false
   implicit val parser = metaconfig.hocon.hoconMetaconfigParser
+  def metaconfigInputFromFile(input: Path) = Input.File(input)
 }
diff --git a/scalafmt-config/jvm/src/main/scala/org/scalafmt/config/PlatformConfig.scala b/scalafmt-config/jvm/src/main/scala/org/scalafmt/config/PlatformConfig.scala
index f350693583..2d23590747 100644
--- a/scalafmt-config/jvm/src/main/scala/org/scalafmt/config/PlatformConfig.scala
+++ b/scalafmt-config/jvm/src/main/scala/org/scalafmt/config/PlatformConfig.scala
@@ -1,8 +1,13 @@
 package org.scalafmt.config
 
+import java.nio.file.Path
+
+import metaconfig.Input
 import metaconfig.MetaconfigParser
 
 object PlatformConfig {
+  val isScalaNative = false
   implicit val parser: MetaconfigParser =
     metaconfig.typesafeconfig.typesafeConfigMetaconfigParser
+  def metaconfigInputFromFile(input: Path) = Input.File(input)
 }
diff --git a/scalafmt-config/native/src/main/scala/org/scalafmt/config/PlatformConfig.scala b/scalafmt-config/native/src/main/scala/org/scalafmt/config/PlatformConfig.scala
new file mode 100644
index 0000000000..35ed597179
--- /dev/null
+++ b/scalafmt-config/native/src/main/scala/org/scalafmt/config/PlatformConfig.scala
@@ -0,0 +1,15 @@
+package org.scalafmt.config
+
+import java.nio.file.Files
+import java.nio.file.Path
+
+import metaconfig.Input
+import metaconfig.MetaconfigParser
+
+object PlatformConfig {
+  val isScalaNative = true
+  implicit val parser: MetaconfigParser =
+    metaconfig.sconfig.sConfigMetaconfigParser
+  def metaconfigInputFromFile(input: Path) = Input
+    .String(new String(Files.readAllBytes(input)))
+}
diff --git a/scalafmt-config/shared/src/main/scala/org/scalafmt/config/ConfParsed.scala b/scalafmt-config/shared/src/main/scala/org/scalafmt/config/ConfParsed.scala
index a861f36d36..5f3118e068 100644
--- a/scalafmt-config/shared/src/main/scala/org/scalafmt/config/ConfParsed.scala
+++ b/scalafmt-config/shared/src/main/scala/org/scalafmt/config/ConfParsed.scala
@@ -58,6 +58,6 @@ object ConfParsed {
     fromInput(Input.String(input), path)
 
   def fromPath(input: Path, path: Option[String] = None): ConfParsed =
-    apply(Configured.fromExceptionThrowing(Input.File(input)), path)
+    apply(Configured.fromExceptionThrowing(metaconfigInputFromFile(input)), path)
 
 }
diff --git a/scalafmt-core/native/src/main/scala/org/scalafmt/internal/RegexCompat.scala b/scalafmt-core/native/src/main/scala/org/scalafmt/internal/RegexCompat.scala
new file mode 100644
index 0000000000..d68e2349da
--- /dev/null
+++ b/scalafmt-core/native/src/main/scala/org/scalafmt/internal/RegexCompat.scala
@@ -0,0 +1,222 @@
+package org.scalafmt.internal
+
+import java.util.regex.Pattern
+
+import scala.util.matching.Regex
+
+/* Before text matching (?=re), after text matching (?<=re)
+ * and more are incompatible in Scala Native, so custom functions
+ * have to be used.
+ * Scala Native uses an implementation of:
+ * https://github.com/google/re2/wiki/Syntax
+ */
+
+object RegexCompat {
+
+  /* Replaces '\\h', which is incompatible in Scala Native.
+   * Does not check correctness of the input regex string.
+   */
+  private def fixHorizontalSpaceInRegex(reg: String) = {
+
+    @inline
+    val replacingInsideClass =
+      "\t \u00A0\u1680\u180E\u2000-\u200A\u202F\u205F\u3000"
+
+    @inline
+    val replacingOutsideClass = s"[$replacingInsideClass]"
+
+    val sb = new StringBuilder()
+    var isInClass = false
+    var isEscaped = false
+
+    for (char <- reg) char match {
+      case '\\' if !isEscaped => isEscaped = true
+      case 'h' if isEscaped =>
+        sb.append(if (isInClass) replacingInsideClass else replacingOutsideClass)
+        isEscaped = false
+      case '[' if !isEscaped =>
+        sb.append('[')
+        isInClass = true
+      case ']' if !isEscaped =>
+        sb.append(']')
+        isInClass = false
+      case other =>
+        if (isEscaped) {
+          isEscaped = false
+          sb.append('\\')
+        }
+        sb.append(other)
+    }
+    sb.toString()
+  }
+
+  @inline
+  val trailingSpace = Pattern
+    .compile(fixHorizontalSpaceInRegex("\\h+$"), Pattern.MULTILINE)
+
+  // "slc" stands for single-line comment
+  @inline
+  val slcLine = Pattern
+    .compile(fixHorizontalSpaceInRegex("^/\\/\\/*\\h*(.*?)\\h*$"))
+
+  @inline
+  val slcDelim = Pattern.compile(fixHorizontalSpaceInRegex("\\h+"))
+
+  // "mlc" stands for multi-line comment
+  @inline
+  val mlcHeader = Pattern
+    .compile(fixHorizontalSpaceInRegex("^/\\*\\h*(?:\n\\h*[*]*\\h*)?"))
+
+  @inline
+  val mlcLineDelim = Pattern
+    .compile(fixHorizontalSpaceInRegex("\\h*\n\\h*[*]*\\h*"))
+
+  @inline
+  val mlcParagraphEnd = Pattern.compile("[.:!?=]$")
+
+  @inline
+  val mlcParagraphBeg = Pattern.compile("^(?:[-*@=]|\\d+[.:])")
+
+  @inline
+  val leadingAsteriskSpace = Pattern
+    .compile(fixHorizontalSpaceInRegex("\n\\h*[*][^*]"), Pattern.MULTILINE)
+
+  @inline
+  val docstringLine = Pattern.compile(
+    fixHorizontalSpaceInRegex("^(?:\\h*\\*)?(\\h*)(.*?)\\h*$"),
+    Pattern.MULTILINE,
+  )
+
+  @inline
+  val emptyLines = fixHorizontalSpaceInRegex("\\h*(\n\\h*\\*?\\h*)*")
+
+  @inline
+  val emptyDocstring = Pattern.compile(s"^/\\*\\*$emptyLines\\*/$$")
+
+  @inline
+  val onelineDocstring = {
+    val oneline = fixHorizontalSpaceInRegex("[^*\n\\h](?:[^\n]*[^\n\\h])?")
+    Pattern.compile(s"^/\\*\\*$emptyLines($oneline)$emptyLines\\*/$$")
+  }
+
+  @inline
+  val docstringLeadingSpace = Pattern.compile(fixHorizontalSpaceInRegex("^\\h+"))
+
+  @inline
+  def compileStripMarginPattern(pipe: Char) = Pattern
+    .compile(fixHorizontalSpaceInRegex(s"\n+\\h*?\\$pipe"), Pattern.MULTILINE)
+
+  @inline
+  def compileStripMarginPatternWithLineContent(pipe: Char) = Pattern.compile(
+    fixHorizontalSpaceInRegex(s"\n(\\h*\\$pipe)?([^\n]*)"),
+    Pattern.MULTILINE,
+  )
+
+  val stripMarginPatternWithLineContent =
+    compileStripMarginPatternWithLineContent('|')
+
+  // see: https://ammonite.io/#Save/LoadSession
+  @inline
+  val ammonitePattern: Regex = "(?:\\s*\\n@)".r
+
+  @inline
+  val stripMarginPattern = Pattern.compile(
+    fixHorizontalSpaceInRegex("\n(\\h*\\|)?([^\n]*)"),
+    Pattern.MULTILINE,
+  )
+
+  // startAfterPattern and endBeforePattern should be unique in basePattern
+  // basePattern = startAfterPattern + matched pattern + endBeforePattern
+  private def replaceAll(
+      basePattern: Pattern,
+      startAfterPattern: Pattern,
+      endBeforePattern: Pattern,
+      baseText: String,
+      replacingText: String,
+  ): String = {
+    val sb = new java.lang.StringBuilder()
+    val matcher = basePattern.matcher(baseText)
+    var currPosition = 0
+    while (matcher.find()) {
+      val start = matcher.start()
+      val end = matcher.end()
+
+      sb.append(baseText, currPosition, start)
+
+      val subtext = baseText.substring(start, end)
+      val startAfterMatcher = startAfterPattern.matcher(subtext)
+      val endBeforeMatcher = endBeforePattern.matcher(subtext)
+
+      startAfterMatcher.find()
+      endBeforeMatcher.find()
+
+      sb.append(startAfterMatcher.group())
+      sb.append(replacingText)
+      sb.append(endBeforeMatcher.group())
+
+      currPosition = end
+    }
+
+    sb.append(baseText, currPosition, baseText.length())
+    sb.toString()
+  }
+
+  @inline
+  private val leadingPipeSpace = compileStripMarginPattern('|')
+
+  @inline
+  private def getStripMarginPattern(pipe: Char) =
+    if (pipe == '|') leadingPipeSpace else compileStripMarginPattern(pipe)
+
+  private val startAfterForReplaceAllStripMargin = Pattern.compile("\n+")
+  @inline
+  def replaceAllStripMargin(
+      text: String,
+      spaces: String,
+      pipe: Char,
+  ): String = {
+    val endBefore = Pattern.compile(s"\\$pipe")
+    replaceAll(
+      getStripMarginPattern(pipe),
+      startAfterForReplaceAllStripMargin,
+      endBefore,
+      text,
+      spaces,
+    )
+  }
+
+  private val startAfterForReplaceAllLeadingAsterisk = Pattern.compile("\n")
+  private val endBeforeForReplaceAllLeadingAsterisk = Pattern
+    .compile("([*][^*])")
+  @inline
+  def replaceAllLeadingAsterisk(trimmed: String, spaces: String): String =
+    replaceAll(
+      leadingAsteriskSpace,
+      startAfterForReplaceAllLeadingAsterisk,
+      endBeforeForReplaceAllLeadingAsterisk,
+      trimmed,
+      spaces,
+    )
+
+  // replaces baseText.split("(?={beforeText})")
+  @inline
+  def splitByBeforeTextMatching(
+      baseText: String,
+      beforeText: String,
+  ): Array[String] = {
+    val beforeTextPattern = Pattern.compile(beforeText)
+    val matcher = beforeTextPattern.matcher(baseText)
+
+    val res = new scala.collection.mutable.ArrayBuffer[String]()
+    var currPosition = 0
+    while (matcher.find()) {
+      val start = matcher.start()
+      if (start != 0) res.append(baseText.substring(currPosition, start))
+
+      currPosition = start
+    }
+    res.append(baseText.substring(currPosition, baseText.size))
+
+    res.toArray
+  }
+}
diff --git a/scalafmt-sysops/jvm/src/main/scala-2.12/org/scalafmt/CompatCollections.scala b/scalafmt-sysops/jvm/src/main/scala-2.12/org/scalafmt/CompatCollections.scala
new file mode 100644
index 0000000000..02f93ae678
--- /dev/null
+++ b/scalafmt-sysops/jvm/src/main/scala-2.12/org/scalafmt/CompatCollections.scala
@@ -0,0 +1,10 @@
+package org.scalafmt
+
+private[scalafmt] object CompatCollections {
+  val JavaConverters = scala.collection.JavaConverters
+  object ParConverters {
+    implicit class XtensionIterable[T](val col: Iterable[T]) extends AnyVal {
+      def compatPar = col.par
+    }
+  }
+}
diff --git a/scalafmt-sysops/jvm/src/main/scala-2.13/org/scalafmt/CompatCollections.scala b/scalafmt-sysops/jvm/src/main/scala-2.13/org/scalafmt/CompatCollections.scala
new file mode 100644
index 0000000000..120651ffc0
--- /dev/null
+++ b/scalafmt-sysops/jvm/src/main/scala-2.13/org/scalafmt/CompatCollections.scala
@@ -0,0 +1,12 @@
+package org.scalafmt
+
+import scala.collection.parallel.CollectionConverters._
+
+private[scalafmt] object CompatCollections {
+  val JavaConverters = scala.jdk.CollectionConverters
+  object ParConverters {
+    implicit class XtensionIterable[T](val col: Iterable[T]) extends AnyVal {
+      def compatPar = col.par
+    }
+  }
+}
diff --git a/scalafmt-sysops/jvm/src/main/scala/org/scalafmt/sysops/PlatformCompat.scala b/scalafmt-sysops/jvm/src/main/scala/org/scalafmt/sysops/PlatformCompat.scala
new file mode 100644
index 0000000000..eccb4964bf
--- /dev/null
+++ b/scalafmt-sysops/jvm/src/main/scala/org/scalafmt/sysops/PlatformCompat.scala
@@ -0,0 +1,5 @@
+package org.scalafmt.sysops
+
+private[sysops] object PlatformCompat {
+  def isScalaNative = false
+}
diff --git a/scalafmt-sysops/native/src/main/scala-2.12/org/scalafmt/CompatCollections.scala b/scalafmt-sysops/native/src/main/scala-2.12/org/scalafmt/CompatCollections.scala
new file mode 100644
index 0000000000..6d6de9aec1
--- /dev/null
+++ b/scalafmt-sysops/native/src/main/scala-2.12/org/scalafmt/CompatCollections.scala
@@ -0,0 +1,11 @@
+package org.scalafmt
+
+object CompatCollections {
+  val JavaConverters = scala.collection.JavaConverters
+
+  object ParConverters {
+    implicit class XtensionIterable[T](val col: Iterable[T]) extends AnyVal {
+      def compatPar = col.par
+    }
+  }
+}
diff --git a/scalafmt-sysops/native/src/main/scala-2.13/org/scalafmt/CompatCollections.scala b/scalafmt-sysops/native/src/main/scala-2.13/org/scalafmt/CompatCollections.scala
new file mode 100644
index 0000000000..e9fc3fdcd0
--- /dev/null
+++ b/scalafmt-sysops/native/src/main/scala-2.13/org/scalafmt/CompatCollections.scala
@@ -0,0 +1,14 @@
+package org.scalafmt
+
+object CompatCollections {
+  val JavaConverters = scala.jdk.CollectionConverters
+
+  // Parallel collections are not released yet for Scala Native:
+  // https://github.com/scala/scala-parallel-collections/issues/262
+  // Once that releases, this should be able to be removed
+  object ParConverters {
+    implicit class XtensionIterable[T](val col: Iterable[T]) extends AnyVal {
+      def compatPar = col
+    }
+  }
+}
diff --git a/scalafmt-sysops/native/src/main/scala/org/scalafmt/sysops/PlatformCompat.scala b/scalafmt-sysops/native/src/main/scala/org/scalafmt/sysops/PlatformCompat.scala
new file mode 100644
index 0000000000..bc37cc61f8
--- /dev/null
+++ b/scalafmt-sysops/native/src/main/scala/org/scalafmt/sysops/PlatformCompat.scala
@@ -0,0 +1,5 @@
+package org.scalafmt.sysops
+
+private[sysops] object PlatformCompat {
+  def isScalaNative = true
+}
diff --git a/scalafmt-sysops/shared/src/main/scala-2.12/org/scalafmt/CompatCollections.scala b/scalafmt-sysops/shared/src/main/scala-2.12/org/scalafmt/CompatCollections.scala
deleted file mode 100644
index 84094035db..0000000000
--- a/scalafmt-sysops/shared/src/main/scala-2.12/org/scalafmt/CompatCollections.scala
+++ /dev/null
@@ -1,6 +0,0 @@
-package org.scalafmt
-
-private[scalafmt] object CompatCollections {
-  val JavaConverters = scala.collection.JavaConverters
-  object ParConverters
-}
diff --git a/scalafmt-sysops/shared/src/main/scala-2.13/org/scalafmt/CompatCollections.scala b/scalafmt-sysops/shared/src/main/scala-2.13/org/scalafmt/CompatCollections.scala
deleted file mode 100644
index 392588673e..0000000000
--- a/scalafmt-sysops/shared/src/main/scala-2.13/org/scalafmt/CompatCollections.scala
+++ /dev/null
@@ -1,6 +0,0 @@
-package org.scalafmt
-
-private[scalafmt] object CompatCollections {
-  val JavaConverters = scala.jdk.CollectionConverters
-  val ParConverters = scala.collection.parallel.CollectionConverters
-}
diff --git a/scalafmt-sysops/shared/src/main/scala/org/scalafmt/sysops/FileOps.scala b/scalafmt-sysops/shared/src/main/scala/org/scalafmt/sysops/FileOps.scala
index c08cf05ad7..dee9693c12 100644
--- a/scalafmt-sysops/shared/src/main/scala/org/scalafmt/sysops/FileOps.scala
+++ b/scalafmt-sysops/shared/src/main/scala/org/scalafmt/sysops/FileOps.scala
@@ -1,6 +1,7 @@
 package org.scalafmt.sysops
 
 import org.scalafmt.CompatCollections.JavaConverters._
+import org.scalafmt.sysops.PlatformCompat
 
 import java.net.URI
 import java.net.URL
@@ -75,11 +76,12 @@ object FileOps {
   }
 
   /** Reads file from file system or from http url */
-  def readFile(filename: String)(implicit codec: Codec): String =
-    Try(new URL(filename)) match {
-      case Success(url) => readFile(url)
-      case _ => readFile(getFile(filename))
-    }
+  def readFile(filename: String)(implicit codec: Codec): String = {
+    val urlOpt =
+      if (PlatformCompat.isScalaNative) None
+      else Try(new URL(filename)).toOption
+    urlOpt.fold(readFile(getFile(filename)))(readFile)
+  }
 
   def readFile(url: URL)(implicit codec: Codec): String = {
     val isFile = Option(url.getProtocol).forall("file".equalsIgnoreCase)
diff --git a/scalafmt-tests-community/src/test/scala/org/scalafmt/community/TestHelpers.scala b/scalafmt-tests-community/src/test/scala/org/scalafmt/community/TestHelpers.scala
index c7baf44c12..e050fd5c1b 100644
--- a/scalafmt-tests-community/src/test/scala/org/scalafmt/community/TestHelpers.scala
+++ b/scalafmt-tests-community/src/test/scala/org/scalafmt/community/TestHelpers.scala
@@ -99,13 +99,13 @@ object TestHelpers {
       val (dirs, files) =
         try ds.iterator().asScala.toList.partition(Files.isDirectory(_))
         finally ds.close()
-      val fileStats = files.par.flatMap { x =>
+      val fileStats = files.compatPar.flatMap { x =>
         val fileStr = x.toString
         if (fileStr.endsWith(".scala") && !excluded(fileStr))
           Some(runFile(styleName, x, fileStr))
         else None
       }.reduceLeftOption(TestStats.merge)
-      val dirStats = dirs.par.flatMap(checkFilesRecursive(styleName, _))
+      val dirStats = dirs.compatPar.flatMap(checkFilesRecursive(styleName, _))
         .reduceLeftOption(TestStats.merge)
       fileStats.fold(dirStats)(x =>
         dirStats.map(TestStats.merge(_, x)).orElse(fileStats),
diff --git a/scalafmt-tests/shared/src/test/scala/org/scalafmt/ScalafmtProps.scala b/scalafmt-tests/jvm/src/test/scala/org/scalafmt/ScalafmtProps.scala
similarity index 99%
rename from scalafmt-tests/shared/src/test/scala/org/scalafmt/ScalafmtProps.scala
rename to scalafmt-tests/jvm/src/test/scala/org/scalafmt/ScalafmtProps.scala
index 74b3e5d427..0515d8dfb3 100644
--- a/scalafmt-tests/shared/src/test/scala/org/scalafmt/ScalafmtProps.scala
+++ b/scalafmt-tests/jvm/src/test/scala/org/scalafmt/ScalafmtProps.scala
@@ -24,7 +24,7 @@ class ScalafmtProps extends FunSuite with FormatAssertions {
       // TODO(olafur) remove once testkit 1.7 is out
       Corpus.fastparse
         .copy(Corpus.fastparse.url.replace("olafurpg", "scalameta")),
-    ).take(count).toBuffer.par
+    ).take(count).toBuffer.compatPar
     SyntaxAnalysis.run[Observation[Bug]](corpus) { file =>
       val code = file.read
       try Scalafmt.format(code, config) match {
diff --git a/scalafmt-tests/jvm/src/test/scala/org/scalafmt/cli/CliOptionsJVMTest.scala b/scalafmt-tests/jvm/src/test/scala/org/scalafmt/cli/CliOptionsJVMTest.scala
new file mode 100644
index 0000000000..3228725e52
--- /dev/null
+++ b/scalafmt-tests/jvm/src/test/scala/org/scalafmt/cli/CliOptionsJVMTest.scala
@@ -0,0 +1,25 @@
+package org.scalafmt.cli
+
+import FileTestOps._
+import munit.FunSuite
+
+class CliOptionsJVMTest extends FunSuite {
+
+  private val baseCliOptionsWithOut = baseCliOptions
+    .copy(common = baseCliOptions.common.copy(out = System.out))
+
+  Seq("--stdin", "--stdout").foreach { arg =>
+    test(s"don't write info when using $arg") {
+      val options = Cli.getConfig(Array(arg), baseCliOptionsWithOut).get
+      val cons = System.console()
+      if (cons ne null) options.common.info match {
+        case x: Output.FromWriter if x.obj eq cons.writer() =>
+        case x => fail(s"info should be writing to console: $x")
+      }
+      else options.common.info match {
+        case x: Output.FromStream if x.obj eq Output.NoopStream.printStream =>
+        case x => fail(s"info should be writing to NoopStream: $x")
+      }
+    }
+  }
+}
diff --git a/scalafmt-tests/jvm/src/test/scala/org/scalafmt/sysops/FileOpsJVMTest.scala b/scalafmt-tests/jvm/src/test/scala/org/scalafmt/sysops/FileOpsJVMTest.scala
new file mode 100644
index 0000000000..f90e4e982e
--- /dev/null
+++ b/scalafmt-tests/jvm/src/test/scala/org/scalafmt/sysops/FileOpsJVMTest.scala
@@ -0,0 +1,14 @@
+package org.scalafmt.sysops
+
+class FileOpsJVMTest extends munit.FunSuite {
+  test("readFile with URL") {
+    val url = getClass.getResource("/readme.md")
+    val contents = FileOps.readFile(url.toString)
+    val expectedFirstLine = "# scalafmt tests\n"
+    val firstLine = contents.substring(0, expectedFirstLine.length)
+    assertEquals(firstLine, expectedFirstLine)
+
+    assertEquals(FileOps.readFile(url), contents)
+    assertEquals(FileOps.readAsURL(url), contents)
+  }
+}
diff --git a/scalafmt-tests/shared/src/test/scala/org/scalafmt/cli/CliOptionsTest.scala b/scalafmt-tests/shared/src/test/scala/org/scalafmt/cli/CliOptionsTest.scala
index a1f0423671..a484ce074c 100644
--- a/scalafmt-tests/shared/src/test/scala/org/scalafmt/cli/CliOptionsTest.scala
+++ b/scalafmt-tests/shared/src/test/scala/org/scalafmt/cli/CliOptionsTest.scala
@@ -111,19 +111,4 @@ class CliOptionsTest extends FunSuite {
     assertEquals(options.common.info.printStream, System.out)
   }
 
-  Seq("--stdin", "--stdout").foreach { arg =>
-    test(s"don't write info when using $arg") {
-      val options = Cli.getConfig(Array(arg), baseCliOptionsWithOut).get
-      val cons = System.console()
-      if (cons ne null) options.common.info match {
-        case x: Output.FromWriter if x.obj eq cons.writer() =>
-        case x => fail(s"info should be writing to console: $x")
-      }
-      else options.common.info match {
-        case x: Output.FromStream if x.obj eq Output.NoopStream.printStream =>
-        case x => fail(s"info should be writing to NoopStream: $x")
-      }
-    }
-  }
-
 }
diff --git a/scalafmt-tests/shared/src/test/scala/org/scalafmt/cli/CliTest.scala b/scalafmt-tests/shared/src/test/scala/org/scalafmt/cli/CliTest.scala
index 7a773da67d..7f9d2040c1 100644
--- a/scalafmt-tests/shared/src/test/scala/org/scalafmt/cli/CliTest.scala
+++ b/scalafmt-tests/shared/src/test/scala/org/scalafmt/cli/CliTest.scala
@@ -3,6 +3,7 @@ package org.scalafmt.cli
 import org.scalafmt.Error.NoMatchingFiles
 import org.scalafmt.Versions.{stable => stableVersion}
 import org.scalafmt.cli.FileTestOps._
+import org.scalafmt.config.PlatformConfig
 import org.scalafmt.config.ProjectFiles
 import org.scalafmt.config.ScalafmtConfig
 import org.scalafmt.sysops.AbsoluteFile
@@ -716,7 +717,7 @@ trait CliTestBehavior {
 }
 
 class CliTest extends AbstractCliTest with CliTestBehavior {
-  testCli("1.6.0-RC4") // test for runDynamic
+  if (!PlatformConfig.isScalaNative) testCli("1.6.0-RC4") // test for runDynamic, incompatible with Scala Native
   testCli(stableVersion) // test for runScalafmt
 
   test(s"path-error") {
diff --git a/scalafmt-tests/shared/src/test/scala/org/scalafmt/sysops/FileOpsTest.scala b/scalafmt-tests/shared/src/test/scala/org/scalafmt/sysops/FileOpsTest.scala
index 7b1bb7ef7f..08108c0a9d 100644
--- a/scalafmt-tests/shared/src/test/scala/org/scalafmt/sysops/FileOpsTest.scala
+++ b/scalafmt-tests/shared/src/test/scala/org/scalafmt/sysops/FileOpsTest.scala
@@ -45,17 +45,6 @@ class FileOpsTest extends munit.FunSuite {
     assertEquals(FileOps.listFiles(subsubfile), Seq(subsubfile))
   }
 
-  test("readFile with URL") {
-    val url = getClass.getResource("/readme.md")
-    val contents = FileOps.readFile(url.toString)
-    val expectedFirstLine = "# scalafmt tests\n"
-    val firstLine = contents.substring(0, expectedFirstLine.length)
-    assertEquals(firstLine, expectedFirstLine)
-
-    assertEquals(FileOps.readFile(url), contents)
-    assertEquals(FileOps.readAsURL(url), contents)
-  }
-
 }
 
 object FileOpsTest {