workaround for scala/scala3#12588

Author: oyvindberg

importer-portable/src/main/scala/org/scalablytyped/converter/internal/importer/Phase3Compile.scala

@@ -106,6 +106,8 @@ class Phase3Compile(
           if (existing.all.values.forall(files.exists)) {
             logger.warn(s"Using cached build $jarFile")
             PhaseRes.Ok(PublishedSbtProject(sbtProject)(compilerPaths.classesDir, existing, None))
+          } else if (allFilesProperVersion.sourcesDir.size > 5500 && versions.scala.is3) { // todo
+            PhaseRes.Failure(Map(source -> Right("too many files")))
           } else {
 
             files.deleteAll(compilerPaths.classesDir)