Is there any plan to support Scala.js with Scala 3 ?

[counter2015]

It seems the latest version of scoverage (2.4.1 for now) does not support Scala.js with Scala 3 yet.
Is there any plan to support it ?

see also: scala/scala3#20255

[tgodzik]

We should for sure support it, will try to work on it at some point. Do you have maybe an example project that it fails in?

[counter2015]

👍 I will try to minize the project next week.

[counter2015]

@tgodzik This is the minimal reproduction step.

project/plugins.sbt

addSbtPlugin("org.scoverage" % "sbt-scoverage" % "2.4.1")
addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.20.1")

build.sbt

ThisBuild / scalaVersion := "3.7.4"
ThisBuild / organization := "com.example"

lazy val root = (project in file("."))
  .enablePlugins(ScalaJSPlugin)
  .settings(
    name := "scoverage-scalajs-repro",
    libraryDependencies ++= Seq(
      "org.scala-js" %%% "scalajs-dom" % "2.8.1",
    ),
    scalaJSUseMainModuleInitializer := true
  )

the code

package com.example

import org.scalajs.dom
import org.scalajs.dom.html
import scala.scalajs.js.annotation.JSExportTopLevel

@JSExportTopLevel("SimpleApp")
object SimpleApp:
  def main(args: Array[String]): Unit =
    dom.window.addEventListener("test", (_: dom.Event) => {
      val button = dom.document.createElement("button").asInstanceOf[html.Button]
      button.onclick = _ => println("Clicked")
    })

The result of running command sbt coverage test coverageReport

click here to see full output

sbt coverage test coverageReport
[info] welcome to sbt 1.11.7 (Amazon.com Inc. Java 21.0.2)
[info] loading settings for project scoverage-scalajs-repro-build from plugins.sbt...
[info] loading project definition from D:\dev\scoverage-scalajs-repro\project
[info] loading settings for project root from build.sbt...
[info] set current project to scoverage-scalajs-repro (in build file:/D:/dev/oss/Souschef/scoverage-scalajs-repro/)
[info] Defining ThisBuild / coverageEnabled
[info] The new value will be used by Compile / compile / scalacOptions, libraryDependencies
[info] Reapplying settings...
[info] set current project to scoverage-scalajs-repro (in build file:/D:/dev/oss/Souschef/scoverage-scalajs-repro/)
[info] compiling 1 Scala source to D:\dev\scoverage-scalajs-repro\target\scala-3.7.4\classes ...

  unhandled exception while running genSJSIR on D:\dev\scoverage-scalajs-repro\src\main\scala\SimpleApp.scalae / compileIncremental 2s

  An unhandled exception was thrown in the compiler.
  Please file a crash report here:
  https://github.com/scala/scala3/issues/new/choose
  For non-enriched exceptions, compile with -Xno-enrich-error-messages.


     while compiling: D:\dev\scoverage-scalajs-repro\src\main\scala\SimpleApp.scala      
        during phase: genSJSIR
                mode: Mode(ImplicitsEnabled)
     library version: version 2.13.16
    compiler version: version 3.7.4
            settings: -classpath D:\dev\scoverage-scalajs-repro\target\scala-3.7.4\classes;userhome\AppData\Local\Coursier\Cache\v1\https\maven-central-asia.storage-download.googleapis.com\maven2\org\scala-lang\scala3-library_sjs1_3\3.7.4\scala3-library_sjs1_3-3.7.4.jar;userhome\AppData\Local\Coursier\Cache\v1\https\repo1.maven.org\maven2\org\scala-js\scalajs-library_2.13\1.20.1\scalajs-library_2.13-1.20.1.jar;userhome\AppData\Local\Coursier\Cache\v1\https\maven-central-asia.storage-download.googleapis.com\maven2\org\scala-js\scalajs-dom_sjs1_3\2.8.1\scalajs-dom_sjs1_3-2.8.1.jar;userhome\AppData\Local\Coursier\Cache\v1\https\repo1.maven.org\maven2\org\scala-lang\scala-library\2.13.16\scala-library-2.13.16.jar;userhome\AppData\Local\Coursier\Cache\v1\https\repo1.maven.org\maven2\org\scala-js\scalajs-javalib\1.20.1\scalajs-javalib-1.20.1.jar;userhome\AppData\Local\Coursier\Cache\v1\https\repo1.maven.org\maven2\org\scala-js\scalajs-scalalib_2.13\2.13.16%2B1.20.1\scalajs-scalalib_2.13-2.13.16%2B1.20.1.jar -coverage-out D:\dev\scoverage-scalajs-repro\target\scala-3.7.4\scoverage-data -d D:\dev\scoverage-scalajs-repro\target\scala-3.7.4\classes -scalajs true

[error] ## Exception when compiling 1 sources to D:\dev\scoverage-scalajs-repro\target\scala-3.7.4\classes
[error] dotty.tools.sjs.ir.InvalidIRException: Cannot hash a transient IR node (its value is of class class dotty.tools.backend.sjs.JSCodeGen$UndefinedParam$)                                              
[error] dotty.tools.sjs.ir.Hashers$TreeHasher.mixTree(Hashers.scala:562)                              
[error] dotty.tools.sjs.ir.Hashers$TreeHasher.mixTrees$$anonfun$1(Hashers.scala:570)                  
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)                                 
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)                                 
[error] scala.collection.immutable.List.foreach(List.scala:334)                                       
[error] dotty.tools.sjs.ir.Hashers$TreeHasher.mixTrees(Hashers.scala:570)                             
[error] dotty.tools.sjs.ir.Hashers$TreeHasher.mixTree(Hashers.scala:185)                              
[error] dotty.tools.sjs.ir.Hashers$TreeHasher.mixTrees$$anonfun$1(Hashers.scala:570)                  
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)                                 
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)                                 
[error] scala.collection.immutable.List.foreach(List.scala:334)                                       
[error] dotty.tools.sjs.ir.Hashers$TreeHasher.mixTrees(Hashers.scala:570)                             
[error] dotty.tools.sjs.ir.Hashers$TreeHasher.mixTree(Hashers.scala:185)                              
[error] dotty.tools.sjs.ir.Hashers$.hashMethodDef$$anonfun$1(Hashers.scala:38)                        
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)                                 
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)                                 
[error] scala.Option.foreach(Option.scala:437)                                                        
[error] dotty.tools.sjs.ir.Hashers$.hashMethodDef(Hashers.scala:38)                                   
[error] dotty.tools.sjs.ir.Hashers$.$anonfun$1(Hashers.scala:126)                                     
[error] scala.collection.immutable.List.map(List.scala:251)                                           
[error] dotty.tools.sjs.ir.Hashers$.hashClassDef(Hashers.scala:126)                                   
[error] dotty.tools.backend.sjs.JSCodeGen.genScalaClass(JSCodeGen.scala:501)                          
[error] dotty.tools.backend.sjs.JSCodeGen.genCompilationUnit$$anonfun$3$$anonfun$1(JSCodeGen.scala:254)                                                                                                     
[error] dotty.tools.backend.sjs.ScopedVar$.withScopedVars(ScopedVar.scala:33)                         
[error] dotty.tools.backend.sjs.JSCodeGen.genCompilationUnit$$anonfun$3(JSCodeGen.scala:258)          
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)                                 
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)                                 
[error] scala.collection.immutable.List.foreach(List.scala:334)                                       
[error] dotty.tools.backend.sjs.JSCodeGen.genCompilationUnit(JSCodeGen.scala:234)                     
[error] dotty.tools.backend.sjs.JSCodeGen.run(JSCodeGen.scala:172)                                    
[error] dotty.tools.backend.sjs.GenSJSIR.run(GenSJSIR.scala:21)                                       
[error] dotty.tools.dotc.core.Phases$Phase.runOn$$anonfun$1(Phases.scala:383)                         
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)                                 
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)                                 
[error] scala.collection.immutable.List.foreach(List.scala:334)                                       
[error] dotty.tools.dotc.core.Phases$Phase.runOn(Phases.scala:376)                                    
[error] dotty.tools.dotc.Run.runPhases$1$$anonfun$1(Run.scala:380)                                    
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)                                 
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)                                 
[error] scala.collection.ArrayOps$.foreach$extension(ArrayOps.scala:1324)                             
[error] dotty.tools.dotc.Run.runPhases$1(Run.scala:373)                                               
[error] dotty.tools.dotc.Run.compileUnits$$anonfun$1$$anonfun$2(Run.scala:420)                        
[error] dotty.tools.dotc.Run.compileUnits$$anonfun$1$$anonfun$adapted$1(Run.scala:420)                
[error] scala.Function0.apply$mcV$sp(Function0.scala:42)                                              
[error] dotty.tools.dotc.Run.showProgress(Run.scala:482)                                              
[error] dotty.tools.dotc.Run.compileUnits$$anonfun$1(Run.scala:420)                                   
[error] dotty.tools.dotc.Run.compileUnits$$anonfun$adapted$1(Run.scala:432)                           
[error] dotty.tools.dotc.util.Stats$.maybeMonitored(Stats.scala:69)                                   
[error] dotty.tools.dotc.Run.compileUnits(Run.scala:432)                                              
[error] dotty.tools.dotc.Run.compileSources(Run.scala:319)                                            
[error] dotty.tools.dotc.Run.compile(Run.scala:304)                                                   
[error] dotty.tools.dotc.Driver.doCompile(Driver.scala:37)                                            
[error] dotty.tools.xsbt.CompilerBridgeDriver.run(CompilerBridgeDriver.java:141)                      
[error] dotty.tools.xsbt.CompilerBridge.run(CompilerBridge.java:22)                                   
[error] sbt.internal.inc.AnalyzingCompiler.compile(AnalyzingCompiler.scala:91)                        
[error] sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$7(MixedAnalyzingCompiler.scala:196)  
[error] scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23)                        
[error] sbt.internal.inc.MixedAnalyzingCompiler.timed(MixedAnalyzingCompiler.scala:252)               
[error] sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4(MixedAnalyzingCompiler.scala:186)  
[error] sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4$adapted(MixedAnalyzingCompiler.scala:166)                                                                                                
[error] sbt.internal.inc.JarUtils$.withPreviousJar(JarUtils.scala:241)                                
[error] sbt.internal.inc.MixedAnalyzingCompiler.compileScala$1(MixedAnalyzingCompiler.scala:166)      
[error] sbt.internal.inc.MixedAnalyzingCompiler.compile(MixedAnalyzingCompiler.scala:214)             
[error] sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1(IncrementalCompilerImpl.scala:542)                                                                                              
[error] sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1$adapted(IncrementalCompilerImpl.scala:542)                                                                                      
[error] sbt.internal.inc.Incremental$.$anonfun$apply$3(Incremental.scala:182)
[error] sbt.internal.inc.Incremental$.$anonfun$apply$3$adapted(Incremental.scala:180)                 
[error] sbt.internal.inc.Incremental$$anon$2.run(Incremental.scala:458)                               
[error] sbt.internal.inc.IncrementalCommon$CycleState.next(IncrementalCommon.scala:116)               
[error] sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:56)                   
[error] sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:52)                   
[error] sbt.internal.inc.IncrementalCommon.cycle(IncrementalCommon.scala:264)                         
[error] sbt.internal.inc.Incremental$.$anonfun$incrementalCompile$8(Incremental.scala:413)            
[error] sbt.internal.inc.Incremental$.withClassfileManager(Incremental.scala:500)                     
[error] sbt.internal.inc.Incremental$.incrementalCompile(Incremental.scala:400)                       
[error] sbt.internal.inc.Incremental$.apply(Incremental.scala:208)                                    
[error] sbt.internal.inc.IncrementalCompilerImpl.compileInternal(IncrementalCompilerImpl.scala:542)   
[error] sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileIncrementally$1(IncrementalCompilerImpl.scala:496)                                                                                         
[error] sbt.internal.inc.IncrementalCompilerImpl.handleCompilationError(IncrementalCompilerImpl.scala:332)                                                                                                  
[error] sbt.internal.inc.IncrementalCompilerImpl.compileIncrementally(IncrementalCompilerImpl.scala:433)                                                                                                    
[error] sbt.internal.inc.IncrementalCompilerImpl.compile(IncrementalCompilerImpl.scala:137)           
[error] sbt.Defaults$.compileIncrementalTaskImpl(Defaults.scala:2493)                                 
[error] sbt.Defaults$.$anonfun$compileIncrementalTask$2(Defaults.scala:2443)                          
[error] sbt.internal.server.BspCompileTask$.$anonfun$compute$1(BspCompileTask.scala:41)               
[error] sbt.internal.io.Retry$.sbt$internal$io$Retry$$impl(Retry.scala:114)                           
[error] sbt.internal.io.Retry$.io(Retry.scala:102)                                                    
[error] sbt.internal.io.Retry$.io(Retry.scala:78)                                                     
[error] sbt.internal.io.Retry$.io(Retry.scala:67)                                                     
[error] sbt.internal.server.BspCompileTask$.compute(BspCompileTask.scala:41)                          
[error] sbt.Defaults$.$anonfun$compileIncrementalTask$1(Defaults.scala:2441)                          
[error] scala.Function1.$anonfun$compose$1(Function1.scala:49)                                        
[error] sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:63)                    
[error] sbt.std.Transform$$anon$4.work(Transform.scala:69)                                            
[error] sbt.Execute.$anonfun$submit$2(Execute.scala:283)                                              
[error] sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:24)                          
[error] sbt.Execute.work(Execute.scala:292)                                                           
[error] sbt.Execute.$anonfun$submit$1(Execute.scala:283)                                              
[error] sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:265)   
[error] sbt.CompletionService$$anon$2.call(CompletionService.scala:65)                                
[error] java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)                            
[error] java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:572)             
[error] java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)                            
[error] java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)     
[error] java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)     
[error] java.base/java.lang.Thread.run(Thread.java:1583)                                              
[error]                                                                                               
[error] dotty.tools.sjs.ir.InvalidIRException: Cannot hash a transient IR node (its value is of class class dotty.tools.backend.sjs.JSCodeGen$UndefinedParam$)
[error]         at dotty.tools.sjs.ir.Hashers$TreeHasher.mixTree(Hashers.scala:562)
[error]         at dotty.tools.sjs.ir.Hashers$TreeHasher.mixTrees$$anonfun$1(Hashers.scala:570)       
[error]         at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error]         at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error]         at scala.collection.immutable.List.foreach(List.scala:334)
[error]         at dotty.tools.sjs.ir.Hashers$TreeHasher.mixTrees(Hashers.scala:570)
[error]         at dotty.tools.sjs.ir.Hashers$TreeHasher.mixTree(Hashers.scala:185)
[error]         at dotty.tools.sjs.ir.Hashers$TreeHasher.mixTrees$$anonfun$1(Hashers.scala:570)       
[error]         at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error]         at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error]         at scala.collection.immutable.List.foreach(List.scala:334)
[error]         at dotty.tools.sjs.ir.Hashers$TreeHasher.mixTrees(Hashers.scala:570)
[error]         at dotty.tools.sjs.ir.Hashers$TreeHasher.mixTree(Hashers.scala:185)
[error]         at dotty.tools.sjs.ir.Hashers$.hashMethodDef$$anonfun$1(Hashers.scala:38)
[error]         at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error]         at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error]         at scala.Option.foreach(Option.scala:437)
[error]         at dotty.tools.sjs.ir.Hashers$.hashMethodDef(Hashers.scala:38)
[error]         at dotty.tools.sjs.ir.Hashers$.$anonfun$1(Hashers.scala:126)
[error]         at scala.collection.immutable.List.map(List.scala:251)
[error]         at dotty.tools.sjs.ir.Hashers$.hashClassDef(Hashers.scala:126)
[error]         at dotty.tools.backend.sjs.JSCodeGen.genScalaClass(JSCodeGen.scala:501)
[error]         at dotty.tools.backend.sjs.JSCodeGen.genCompilationUnit$$anonfun$3$$anonfun$1(JSCodeGen.scala:254)
[error]         at dotty.tools.backend.sjs.ScopedVar$.withScopedVars(ScopedVar.scala:33)
[error]         at dotty.tools.backend.sjs.JSCodeGen.genCompilationUnit$$anonfun$3(JSCodeGen.scala:258)
[error]         at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error]         at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error]         at scala.collection.immutable.List.foreach(List.scala:334)
[error]         at dotty.tools.backend.sjs.JSCodeGen.genCompilationUnit(JSCodeGen.scala:234)
[error]         at dotty.tools.backend.sjs.JSCodeGen.run(JSCodeGen.scala:172)
[error]         at dotty.tools.backend.sjs.GenSJSIR.run(GenSJSIR.scala:21)
[error]         at dotty.tools.dotc.core.Phases$Phase.runOn$$anonfun$1(Phases.scala:383)
[error]         at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error]         at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error]         at scala.collection.immutable.List.foreach(List.scala:334)
[error]         at dotty.tools.dotc.core.Phases$Phase.runOn(Phases.scala:376)
[error]         at dotty.tools.dotc.Run.runPhases$1$$anonfun$1(Run.scala:380)
[error]         at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error]         at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error]         at scala.collection.ArrayOps$.foreach$extension(ArrayOps.scala:1324)
[error]         at dotty.tools.dotc.Run.runPhases$1(Run.scala:373)
[error]         at dotty.tools.dotc.Run.compileUnits$$anonfun$1$$anonfun$2(Run.scala:420)
[error]         at dotty.tools.dotc.Run.compileUnits$$anonfun$1$$anonfun$adapted$1(Run.scala:420)     
[error]         at scala.Function0.apply$mcV$sp(Function0.scala:42)
[error]         at dotty.tools.dotc.Run.showProgress(Run.scala:482)
[error]         at dotty.tools.dotc.Run.compileUnits$$anonfun$1(Run.scala:420)
[error]         at dotty.tools.dotc.Run.compileUnits$$anonfun$adapted$1(Run.scala:432)
[error]         at dotty.tools.dotc.util.Stats$.maybeMonitored(Stats.scala:69)
[error]         at dotty.tools.dotc.Run.compileUnits(Run.scala:432)
[error]         at dotty.tools.dotc.Run.compileSources(Run.scala:319)
[error]         at dotty.tools.dotc.Run.compile(Run.scala:304)
[error]         at dotty.tools.dotc.Driver.doCompile(Driver.scala:37)
[error]         at dotty.tools.xsbt.CompilerBridgeDriver.run(CompilerBridgeDriver.java:141)
[error]         at dotty.tools.xsbt.CompilerBridge.run(CompilerBridge.java:22)
[error]         at sbt.internal.inc.AnalyzingCompiler.compile(AnalyzingCompiler.scala:91)
[error]         at sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$7(MixedAnalyzingCompiler.scala:196)
[error]         at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23)
[error]         at sbt.internal.inc.MixedAnalyzingCompiler.timed(MixedAnalyzingCompiler.scala:252)    
[error]         at sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4(MixedAnalyzingCompiler.scala:186)
[error]         at sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4$adapted(MixedAnalyzingCompiler.scala:166)
[error]         at sbt.internal.inc.JarUtils$.withPreviousJar(JarUtils.scala:241)
[error]         at sbt.internal.inc.MixedAnalyzingCompiler.compileScala$1(MixedAnalyzingCompiler.scala:166)
[error]         at sbt.internal.inc.MixedAnalyzingCompiler.compile(MixedAnalyzingCompiler.scala:214)  
[error]         at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1(IncrementalCompilerImpl.scala:542)
[error]         at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1$adapted(IncrementalCompilerImpl.scala:542)
[error]         at sbt.internal.inc.Incremental$.$anonfun$apply$3(Incremental.scala:182)
[error]         at sbt.internal.inc.Incremental$.$anonfun$apply$3$adapted(Incremental.scala:180)      
[error]         at sbt.internal.inc.Incremental$$anon$2.run(Incremental.scala:458)
[error]         at sbt.internal.inc.IncrementalCommon$CycleState.next(IncrementalCommon.scala:116)    
[error]         at sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:56)        
[error]         at sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:52)        
[error]         at sbt.internal.inc.IncrementalCommon.cycle(IncrementalCommon.scala:264)
[error]         at sbt.internal.inc.Incremental$.$anonfun$incrementalCompile$8(Incremental.scala:413) 
[error]         at sbt.internal.inc.Incremental$.withClassfileManager(Incremental.scala:500)
[error]         at sbt.internal.inc.Incremental$.incrementalCompile(Incremental.scala:400)
[error]         at sbt.internal.inc.Incremental$.apply(Incremental.scala:208)
[error]         at sbt.internal.inc.IncrementalCompilerImpl.compileInternal(IncrementalCompilerImpl.scala:542)
[error]         at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileIncrementally$1(IncrementalCompilerImpl.scala:496)
[error]         at sbt.internal.inc.IncrementalCompilerImpl.handleCompilationError(IncrementalCompilerImpl.scala:332)
[error]         at sbt.internal.inc.IncrementalCompilerImpl.compileIncrementally(IncrementalCompilerImpl.scala:433)
[error]         at sbt.internal.inc.IncrementalCompilerImpl.compile(IncrementalCompilerImpl.scala:137 
[error]         at sbt.Defaults$.compileIncrementalTaskImpl(Defaults.scala:2493)
[error]         at sbt.Defaults$.$anonfun$compileIncrementalTask$2(Defaults.scala:2443)
[error]         at sbt.internal.server.BspCompileTask$.$anonfun$compute$1(BspCompileTask.scala:41)    
[error]         at sbt.internal.io.Retry$.sbt$internal$io$Retry$$impl(Retry.scala:114)
[error]         at sbt.internal.io.Retry$.io(Retry.scala:102)
[error]         at sbt.internal.io.Retry$.io(Retry.scala:78)
[error]         at sbt.internal.io.Retry$.io(Retry.scala:67)
[error]         at sbt.internal.server.BspCompileTask$.compute(BspCompileTask.scala:41)
[error]         at sbt.Defaults$.$anonfun$compileIncrementalTask$1(Defaults.scala:2441)
[error]         at scala.Function1.$anonfun$compose$1(Function1.scala:49)
[error]         at sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:63)
[error]         at sbt.std.Transform$$anon$4.work(Transform.scala:69)
[error]         at sbt.Execute.$anonfun$submit$2(Execute.scala:283)
[error]         at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:24)
[error]         at sbt.Execute.work(Execute.scala:292)
[error]         at sbt.Execute.$anonfun$submit$1(Execute.scala:283)
[error]         at sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:265)
[error]         at sbt.CompletionService$$anon$2.call(CompletionService.scala:65)
[error]         at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
[error]         at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:572)  
[error]         at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
[error]         at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
[error]         at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
[error]         at java.base/java.lang.Thread.run(Thread.java:1583)
[error] (Compile / compileIncremental) dotty.tools.sjs.ir.InvalidIRException: Cannot hash a transient IR node (its value is of class class dotty.tools.backend.sjs.JSCodeGen$UndefinedParam$)