更新とか、よく使うやつとか。

.scalafix.conf

@@ -0,0 +1,4 @@
+rules = [
+  DisableSyntax,
+  RemoveUnused
+]

.scalafmt.conf

@@ -1,13 +1,21 @@
-version = "3.4.3"
-runner.dialect = scala212
+version = 3.8.2
+runner.dialect = scala3
 project.git = true
 
 maxColumn = 160
+
+# align
+
 align.preset = none
-align.stripMargin = true
+align.multiline = true
+
+# docstrings
+
 docstrings.style = Asterisk
-docstrings.wrap = no
+docstrings.wrap = keep
 docstrings.blankFirstLine = yes
-assumeStandardLibraryStripMargin = true
-importSelectors = singleLine
+
+# rewrite
+
+rewrite.rules = [SortImports]
 lineEndings = preserve

build.sbt

@@ -20,14 +20,13 @@ inThisBuild(
 
 inThisBuild(
   Seq(
-    scalaVersion := "3.3.0",
-    scalacOptions ++= List(
-      "-feature",
-      "-deprecation",
-      "-unchecked",
-      "-language:postfixOps"
+    scalaVersion := "3.4.2",
+    scalafmtOnCompile := true,
+    scalacOptions ++= Seq(
+      "-Yretain-trees",
+      "-Wunused:all"
     ),
-    scalafmtOnCompile := true
+    semanticdbEnabled := true
   )
 )
 
@@ -36,7 +35,6 @@ inThisBuild(
 lazy val root = (project in file("."))
   .settings(
     name := "scala-template",
-    libraryDependencies ++= Dependencies.deps,
     publish / skip := true
   )
 

project/Dependencies.scala

@@ -3,17 +3,15 @@ import sbt._
 object Dependencies {
 
   object Versions {
-    val logback = "1.4.7"
-    val typesafeConfig = "1.4.2"
-    val scalatest = "3.2.15"
+    val logback = "1.5.6"
+    val typesafeConfig = "1.4.3"
+    val scopt = "4.1.0"
+    val circe = "0.14.9"
+    val circeOptics = "0.15.0"
+    val betterFiles = "3.9.2"
+    val scalatest = "3.2.18"
   }
 
-  lazy val deps: Seq[ModuleID] = Seq(
-    logback,
-    typesafeConfig,
-    scalatest
-  ).flatten
-
   // logging
   lazy val logback: Seq[ModuleID] = Seq(
     "ch.qos.logback" % "logback-classic" % Versions.logback
@@ -24,6 +22,23 @@ object Dependencies {
     "com.typesafe" % "config" % Versions.typesafeConfig
   )
 
+  lazy val scopt: Seq[ModuleID] = Seq(
+    "com.github.scopt" %% "scopt" % Versions.scopt
+  )
+
+  // json
+  lazy val circe: Seq[ModuleID] = Seq(
+    "io.circe" %% "circe-core" % Versions.circe,
+    "io.circe" %% "circe-generic" % Versions.circe,
+    "io.circe" %% "circe-parser" % Versions.circe,
+    "io.circe" %% "circe-optics" % Versions.circeOptics
+  )
+
+  // utility
+  lazy val betterFiles: Seq[ModuleID] = Seq(
+    "com.github.pathikrit" %% "better-files" % Versions.betterFiles
+  )
+
   // testing
   lazy val scalatest: Seq[ModuleID] = Seq(
     "org.scalatest" %% "scalatest" % Versions.scalatest % Test

project/plugins.sbt

@@ -1 +1,2 @@
-addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.4.6")
+addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.5.2")
+addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % "0.12.1")