start factoring out common components

build.sbt

@@ -1,16 +1,85 @@
 import org.scalajs.linker.interface.ModuleSplitStyle
 
-lazy val fahrtenbuch = project
-  .in(file("."))
+ThisBuild / version := "0.1.0-SNAPSHOT"
+ThisBuild / scalaVersion := "3.7.1"
+ThisBuild / scalacOptions ++= Seq("-Xfatal-warnings", "-Wunused:imports")
+
+lazy val commonDependencies = Seq(
+  libraryDependencies += "org.scala-js" %%% "scalajs-dom" % "2.8.0",
+  libraryDependencies += "com.raquo" %%% "laminar" % "17.2.1",
+  libraryDependencies += "de.tu-darmstadt.stg" %%% "rdts" % "0.37.0",
+  libraryDependencies += "org.getshaka" %%% "native-converter" % "0.9.0"
+)
+
+lazy val core = project
+  .in(file("core"))
   .enablePlugins(
     ScalaJSPlugin,
     ScalablyTypedConverterExternalNpmPlugin
   )
   .settings(
-    scalaVersion := "3.7.1",
-    scalacOptions += "-Xfatal-warnings",
-    scalacOptions += "-Wunused:imports",
+    // Tell Scala.js that this is an application with a main method
+    scalaJSUseMainModuleInitializer := true,
+    scalaJSLinkerConfig ~= {
+      _.withModuleKind(ModuleKind.ESModule)
+        .withModuleSplitStyle(
+          ModuleSplitStyle.SmallModulesFor(List("fahrtenbuch"))
+        )
+    },
 
+    // scalably typed config
+    // Ignore several Trystero dependencies in ScalablyTyped to avoid `stImport` errors
+    stIgnore := List(
+      "libp2p",
+      "firebase",
+      "@supabase/supabase-js",
+      "@mdi/font",
+      "bulma",
+      "@types/node"
+    ),
+    externalNpm := baseDirectory.value,
+    commonDependencies
+  )
+
+lazy val node = project
+  .in(file("node"))
+  .dependsOn(core)
+  .enablePlugins(
+    ScalaJSPlugin,
+    ScalablyTypedConverterExternalNpmPlugin
+  )
+  .settings(
+    // Tell Scala.js that this is an application with a main method
+    scalaJSUseMainModuleInitializer := true,
+    scalaJSLinkerConfig ~= {
+      _.withModuleKind(ModuleKind.ESModule)
+        .withModuleSplitStyle(
+          ModuleSplitStyle.SmallModulesFor(List("fahrtenbuch"))
+        )
+    },
+
+    // scalably typed config
+    // Ignore several Trystero dependencies in ScalablyTyped to avoid `stImport` errors
+    stIgnore := List(
+      "libp2p",
+      "firebase",
+      "@supabase/supabase-js",
+      "@mdi/font",
+      "bulma",
+      "@types/node"
+    ),
+    externalNpm := baseDirectory.value,
+    commonDependencies
+  )
+
+lazy val fahrtenbuch = project
+  .in(file("."))
+  .dependsOn(core)
+  .enablePlugins(
+    ScalaJSPlugin,
+    ScalablyTypedConverterExternalNpmPlugin
+  )
+  .settings(
     // Tell Scala.js that this is an application with a main method
     scalaJSUseMainModuleInitializer := true,
 
@@ -42,8 +111,5 @@ lazy val fahrtenbuch = project
     /* Depend on the scalajs-dom library.
      * It provides static types for the browser DOM APIs.
      */
-    libraryDependencies += "org.scala-js" %%% "scalajs-dom" % "2.8.0",
-    libraryDependencies += "com.raquo" %%% "laminar" % "17.2.1",
-    libraryDependencies += "de.tu-darmstadt.stg" %%% "rdts" % "0.37.0",
-    libraryDependencies += "org.getshaka" %%% "native-converter" % "0.9.0"
+    commonDependencies
   )