Predictable module names (fixes #469)

add `stShortModuleNames` (for sbt plugin) and `--shortModuleNames` for CLI which reverts to old behaviour.

Note that the old behaviour is deprecated

cli/src/main/scala/org/scalablytyped/converter/cli/Main.scala

@@ -32,18 +32,19 @@ object Main {
   }
 
   val DefaultOptions = ConversionOptions(
-    useScalaJsDomTypes     = true,
-    outputPackage          = Name.typings,
-    enableScalaJsDefined   = Selection.All,
-    flavour                = Flavour.Normal,
-    ignored                = SortedSet("typescript"),
-    stdLibs                = SortedSet("es6"),
-    expandTypeMappings     = EnabledTypeMappingExpansion.DefaultSelection,
-    versions               = Versions(Versions.Scala3, Versions.ScalaJs1),
-    organization           = "org.scalablytyped",
-    enableReactTreeShaking = Selection.None,
-    enableLongApplyMethod  = false,
-    privateWithin          = None,
+    useScalaJsDomTypes       = true,
+    outputPackage            = Name.typings,
+    enableScalaJsDefined     = Selection.All,
+    flavour                  = Flavour.Normal,
+    ignored                  = SortedSet("typescript"),
+    stdLibs                  = SortedSet("es6"),
+    expandTypeMappings       = EnabledTypeMappingExpansion.DefaultSelection,
+    versions                 = Versions(Versions.Scala3, Versions.ScalaJs1),
+    organization             = "org.scalablytyped",
+    enableReactTreeShaking   = Selection.None,
+    enableLongApplyMethod    = false,
+    privateWithin            = None,
+    useDeprecatedModuleNames = false,
   )
 
   case class Config(
@@ -166,6 +167,11 @@ object Main {
       opt[Boolean]("enableLongApplyMethod")
         .action((x, c) => c.mapConversion(_.copy(enableLongApplyMethod = x)))
         .text(s"Enables long apply methods, instead of implicit ops builders"),
+      opt[Boolean]("shortModuleNames")
+        .action((x, c) => c.mapConversion(_.copy(useDeprecatedModuleNames = x)))
+        .text(
+          s"Enables short module names. This used to be the default, and is now deprecated since it's so difficult to navigate",
+        ),
       arg[Seq[TsIdentLibrary]]("libs")
         .text("Libraries you want to convert from node_modules")
         .unbounded()
@@ -263,11 +269,12 @@ object Main {
             )
             .next(
               new Phase2ToScalaJs(
-                pedantic             = false,
-                scalaVersion         = conversion.versions.scala,
-                enableScalaJsDefined = conversion.enableScalaJsDefined,
-                outputPkg            = conversion.outputPackage,
-                flavour              = conversion.flavourImpl,
+                pedantic                 = false,
+                scalaVersion             = conversion.versions.scala,
+                enableScalaJsDefined     = conversion.enableScalaJsDefined,
+                outputPkg                = conversion.outputPackage,
+                flavour                  = conversion.flavourImpl,
+                useDeprecatedModuleNames = conversion.useDeprecatedModuleNames,
               ),
               "scala.js",
             )

importer-portable/src/main/scala/org/scalablytyped/converter/internal/importer/AdaptiveNamingImport.scala

@@ -27,11 +27,12 @@ final class AdaptiveNamingImport(private val rewrites: Map[IArray[TsIdent], Qual
 
 object AdaptiveNamingImport {
   def apply(
-      outputPkg:         Name,
-      libraryName:       TsIdentLibrary,
-      library:           TsParsedFile,
-      depsRewrites:      IArray[AdaptiveNamingImport],
-      cleanIllegalNames: CleanIllegalNames,
+      outputPkg:                Name,
+      libraryName:              TsIdentLibrary,
+      library:                  TsParsedFile,
+      depsRewrites:             IArray[AdaptiveNamingImport],
+      cleanIllegalNames:        CleanIllegalNames,
+      useDeprecatedModuleNames: Boolean,
   ): AdaptiveNamingImport = {
     val allReferences: IArray[IArray[TsIdent]] =
       TsTreeTraverse
@@ -60,9 +61,15 @@ object AdaptiveNamingImport {
       case IArray.Empty => ()
       case whole @ IArray.initLast(parent, current) =>
         val parentTranslated = registeredReferences(parent)
-        val variants         = variantsFor(current, parent.exists(_.isInstanceOf[TsIdentModule]), illegalNames)
-        var continue         = true
-        val iter             = variants.iterator
+        val variants = variantsFor(
+          current,
+          parent.exists(_.isInstanceOf[TsIdentModule]),
+          parent.collectFirst { case x: TsIdentLibrary => x },
+          illegalNames,
+          useDeprecatedModuleNames,
+        )
+        var continue = true
+        val iter     = variants.iterator
         while (continue && iter.hasNext) {
           val currentVariant = iter.next()
           val possibleQname  = QualifiedName(parentTranslated.parts :+ Name.necessaryRewrite(Name(currentVariant)))
@@ -88,7 +95,13 @@ object AdaptiveNamingImport {
     new AdaptiveNamingImport(registeredReferences.toMap)
   }
 
-  def variantsFor(tsIdent: TsIdent, hasModuleParent: Boolean, illegalNames: Set[String]): Stream[String] = {
+  def variantsFor(
+      tsIdent:                  TsIdent,
+      hasModuleParent:          Boolean,
+      inLib:                    Option[TsIdentLibrary],
+      illegalNames:             Set[String],
+      useDeprecatedModuleNames: Boolean,
+  ): Stream[String] = {
     val base = tsIdent match {
       case TsIdent.namespaced                          => Stream(Name.namespaced.unescaped)
       case TsIdent.Apply                               => Stream(Name.APPLY.unescaped)
@@ -100,7 +113,7 @@ object AdaptiveNamingImport {
         /* todo: We should look up what the augmented module is called and reuse it. I don't care enough to do it now */
         nameVariants(joinCamelCase(m.scopeOpt.toList ++ m.fragments)).map(_ + "AugmentingMod")
 
-      case m: TsIdentModule =>
+      case m: TsIdentModule if useDeprecatedModuleNames =>
         val increasingLength: Stream[List[String]] = {
           val (libraryBits, moduleBits) =
             m match {
@@ -122,15 +135,28 @@ object AdaptiveNamingImport {
 
         preferCamelCase.flatMap(frags => nameVariants(addMod(joinCamelCase(frags))))
 
-      case library: TsIdentLibrary =>
-        nameVariants(toCamelCase(library.value))
+      case m: TsIdentModule =>
+        val shortenedFragments = {
+          inLib match {
+            case Some(TsIdentLibrarySimple(value)) if m.fragments.head == value =>
+              m.fragments.drop(1)
+            case Some(TsIdentLibraryScoped(scope, name)) if m.scopeOpt.contains(scope) && m.fragments.head == name =>
+              m.fragments.drop(1)
+            case _ =>
+              m.fragments
+          }
+        }
+        Stream(addMod(joinCamelCase(shortenedFragments.map(toCamelCase))))
 
-      case _: TsIdentImport => sys.error("unexpected")
+      case library: TsIdentLibrary => variantsForLibName(library)
+      case _:       TsIdentImport  => sys.error("unexpected")
     }
 
     base #::: base.map(_ + "_") #::: base.map(_ + "__")
   }
 
+  def variantsForLibName(library: TsIdentLibrary) =
+    nameVariants(toCamelCase(library.value))
   private def addMod(str: String) = str match {
     case ""       => Name.mod.unescaped
     case nonEmpty => nonEmpty + "Mod"

importer-portable/src/main/scala/org/scalablytyped/converter/internal/importer/ConversionOptions.scala

@@ -10,18 +10,19 @@ import org.scalablytyped.converter.internal.ts.TsIdentLibrary
 import scala.collection.immutable.SortedSet
 
 case class ConversionOptions(
-    useScalaJsDomTypes:     Boolean,
-    flavour:                Flavour,
-    outputPackage:          Name,
-    enableScalaJsDefined:   Selection[TsIdentLibrary],
-    stdLibs:                SortedSet[String],
-    expandTypeMappings:     Selection[TsIdentLibrary],
-    ignored:                SortedSet[String],
-    versions:               Versions,
-    organization:           String,
-    enableReactTreeShaking: Selection[Name],
-    enableLongApplyMethod:  Boolean,
-    privateWithin:          Option[Name],
+    useScalaJsDomTypes:       Boolean,
+    flavour:                  Flavour,
+    outputPackage:            Name,
+    enableScalaJsDefined:     Selection[TsIdentLibrary],
+    stdLibs:                  SortedSet[String],
+    expandTypeMappings:       Selection[TsIdentLibrary],
+    ignored:                  SortedSet[String],
+    versions:                 Versions,
+    organization:             String,
+    enableReactTreeShaking:   Selection[Name],
+    enableLongApplyMethod:    Boolean,
+    privateWithin:            Option[Name],
+    useDeprecatedModuleNames: Boolean,
 ) {
   val ignoredLibs: Set[TsIdentLibrary] =
     ignored.map(TsIdentLibrary.apply)

importer-portable/src/main/scala/org/scalablytyped/converter/internal/importer/ImportName.scala

@@ -15,7 +15,7 @@ object ImportName {
     Name.necessaryRewrite(Name(i.value))
 
   def apply(i: TsIdentLibrary): Name =
-    Name.necessaryRewrite(Name(AdaptiveNamingImport.variantsFor(i, hasModuleParent = false, Set()).head))
+    Name.necessaryRewrite(Name(AdaptiveNamingImport.variantsForLibName(i).head))
 
   object withJsNameAnnotation {
     def apply(original: TsIdentSimple): (Name, Option[Annotation.JsName]) = {

importer-portable/src/main/scala/org/scalablytyped/converter/internal/importer/ImportTree.scala

@@ -284,7 +284,7 @@ class ImportTree(
                 tparams(0).upperBound.exists {
                   case TsTypeKeyOf(_)   => true
                   case TsTypeRef.string => true
-                  case _ => false
+                  case _                => false
                 } &&
                 TsTypeRef(tparams(0).name) == from &&
                 TsTypeRef(tparams(1).name) == to =>

importer-portable/src/main/scala/org/scalablytyped/converter/internal/importer/ImportType.scala

@@ -89,7 +89,6 @@ class ImportType(stdNames: QualifiedName.StdNames) {
       case TsTypeObject(_, Empty) =>
         TypeRef(QualifiedName.JsObject, Empty, NoComments)
 
-
       case TsTypeObject(_, ms) if ExtractInterfaces.isDictionary(ms) =>
         val (numbers, strings, Empty) = ms.partitionCollect2(
           { case x @ TsMemberIndex(_, _, _, Indexing.Dict(_, TsTypeRef.number), _) => x },

importer-portable/src/main/scala/org/scalablytyped/converter/internal/importer/Phase2ToScalaJs.scala

@@ -27,11 +27,12 @@ import scala.collection.immutable.SortedSet
   * Then the phase itself implements a bunch of scala.js limitations, like ensuring no methods erase to the same signature
   */
 class Phase2ToScalaJs(
-    pedantic:             Boolean,
-    scalaVersion:         Versions.Scala,
-    enableScalaJsDefined: Selection[TsIdentLibrary],
-    outputPkg:            Name,
-    flavour:              FlavourImpl,
+    pedantic:                 Boolean,
+    useDeprecatedModuleNames: Boolean,
+    scalaVersion:             Versions.Scala,
+    enableScalaJsDefined:     Selection[TsIdentLibrary],
+    outputPkg:                Name,
+    flavour:                  FlavourImpl,
 ) extends Phase[LibTsSource, LibTs, LibScalaJs] {
 
   override def apply(
@@ -90,6 +91,7 @@ class Phase2ToScalaJs(
         tsLibrary.parsed,
         scalaDeps.mapToIArray { case (_, v) => v.names },
         cleanIllegalNames,
+        useDeprecatedModuleNames,
       )
 
       val importType = new ImportType(new StdNames(outputPkg))
@@ -100,7 +102,7 @@ class Phase2ToScalaJs(
         cleanIllegalNames,
         new ImportExpr(importType, importName),
         enableScalaJsDefined(tsLibrary.name),
-        scalaVersion
+        scalaVersion,
       )
 
       val scalaTree            = importTree(tsLibrary, logger)

importer/src/main/scala/org/scalablytyped/converter/internal/importer/Ci.scala

@@ -113,10 +113,11 @@ object Ci {
                   else Versions.Scala3,
                   Versions.ScalaJs1,
                 ),
-                organization           = organization,
-                enableReactTreeShaking = Selection.None,
-                enableLongApplyMethod  = false,
-                privateWithin          = None,
+                organization             = organization,
+                enableReactTreeShaking   = Selection.None,
+                enableLongApplyMethod    = false,
+                privateWithin            = None,
+                useDeprecatedModuleNames = false,
               ),
               wantedLibs       = wantedLibNames,
               offline          = flags contains "-offline",
@@ -272,10 +273,11 @@ class Ci(config: Ci.Config, paths: Ci.Paths, pool: ForkJoinPool, ec: ExecutionCo
         .next(
           new Phase2ToScalaJs(
             config.pedantic,
-            scalaVersion         = config.conversion.versions.scala,
-            enableScalaJsDefined = config.conversion.enableScalaJsDefined,
-            outputPkg            = config.conversion.outputPackage,
-            flavour              = config.conversion.flavourImpl,
+            scalaVersion             = config.conversion.versions.scala,
+            enableScalaJsDefined     = config.conversion.enableScalaJsDefined,
+            outputPkg                = config.conversion.outputPackage,
+            flavour                  = config.conversion.flavourImpl,
+            useDeprecatedModuleNames = config.conversion.useDeprecatedModuleNames,
           ),
           "scala.js",
         )

importer/src/test/scala/org/scalablytyped/converter/internal/importer/ImporterHarness.scala

@@ -89,10 +89,11 @@ trait ImporterHarness extends AnyFunSuite {
         .next(
           new Phase2ToScalaJs(
             pedantic,
-            scalaVersion         = version.scala,
-            enableScalaJsDefined = Selection.All,
-            outputPkg            = flavour.outputPkg,
-            flavour              = flavour,
+            scalaVersion             = version.scala,
+            enableScalaJsDefined     = Selection.All,
+            outputPkg                = flavour.outputPkg,
+            flavour                  = flavour,
+            useDeprecatedModuleNames = false,
           ),
           "scala.js",
         )

sbt-converter/src/main/scala/org/scalablytyped/converter/internal/ImportTypings.scala

@@ -93,11 +93,12 @@ object ImportTypings {
       )
       .next(
         new Phase2ToScalaJs(
-          pedantic             = false,
-          scalaVersion         = input.conversion.versions.scala,
-          enableScalaJsDefined = input.conversion.enableScalaJsDefined,
-          outputPkg            = input.conversion.outputPackage,
-          flavour              = input.conversion.flavourImpl,
+          pedantic                 = false,
+          scalaVersion             = input.conversion.versions.scala,
+          enableScalaJsDefined     = input.conversion.enableScalaJsDefined,
+          outputPkg                = input.conversion.outputPackage,
+          flavour                  = input.conversion.flavourImpl,
+          useDeprecatedModuleNames = input.conversion.useDeprecatedModuleNames,
         ),
         "scala.js",
       )

sbt-converter/src/main/scala/org/scalablytyped/converter/internal/ImportTypingsGenSources.scala

@@ -76,11 +76,12 @@ object ImportTypingsGenSources {
       )
       .next(
         new Phase2ToScalaJs(
-          pedantic             = false,
-          scalaVersion         = input.conversion.versions.scala,
-          enableScalaJsDefined = input.conversion.enableScalaJsDefined,
-          outputPkg            = conversion.outputPackage,
-          flavour              = input.conversion.flavourImpl,
+          pedantic                 = false,
+          scalaVersion             = input.conversion.versions.scala,
+          enableScalaJsDefined     = input.conversion.enableScalaJsDefined,
+          outputPkg                = conversion.outputPackage,
+          flavour                  = input.conversion.flavourImpl,
+          useDeprecatedModuleNames = input.conversion.useDeprecatedModuleNames,
         ),
         "scala.js",
       )
@@ -155,18 +156,19 @@ object ImportTypingsGenSources {
     val outputName = Name.typings
 
     val conversion = ConversionOptions(
-      useScalaJsDomTypes     = true,
-      flavour                = Flavour.Slinky,
-      outputPackage          = outputName,
-      enableScalaJsDefined   = Selection.All,
-      stdLibs                = SortedSet("es5", "dom"),
-      expandTypeMappings     = EnabledTypeMappingExpansion.DefaultSelection,
-      ignored                = SortedSet(),
-      versions               = Versions(Versions.Scala213, Versions.ScalaJs1),
-      organization           = "org.scalablytyped",
-      enableReactTreeShaking = Selection.None,
-      enableLongApplyMethod  = false,
-      privateWithin          = None,
+      useScalaJsDomTypes       = true,
+      flavour                  = Flavour.Slinky,
+      outputPackage            = outputName,
+      enableScalaJsDefined     = Selection.All,
+      stdLibs                  = SortedSet("es5", "dom"),
+      expandTypeMappings       = EnabledTypeMappingExpansion.DefaultSelection,
+      ignored                  = SortedSet(),
+      versions                 = Versions(Versions.Scala213, Versions.ScalaJs1),
+      organization             = "org.scalablytyped",
+      enableReactTreeShaking   = Selection.None,
+      enableLongApplyMethod    = false,
+      privateWithin            = None,
+      useDeprecatedModuleNames = false,
     )
 
     println(