Problem compiling enum on Scala.js

[ekrich]

Minimized code

Scala.js 1.2.0
Dotty 0.27.0-RC1

enum ConfigSyntax extends jl.Enum[ConfigSyntax] {
  case JSON
  case CONF
  case PROPERTIES
}

Output

[error] Assignment to static member org.ekrich.config.ConfigSyntax.JSON not supported

Expectation

This works fine compiling for JVM so I would expect it to work for Scala.js as well.

Repo

https://github.com/ekrich/sconfig/tree/topic/dotty-js

[djneades]

I ran into this as well with the current nightly (0.28.0-bin-20200920-e99793e-NIGHTLY). The problem also occurs with the basic enum example in the Dotty documentation:

enum Color(val rgb: Int) {
  case Red   extends Color(0xFF0000)
  case Green extends Color(0x00FF00)
  case Blue  extends Color(0x0000FF)
}

Compiler output:

[error] Assignment to static member com.araxis.test.Color$.Red not supported
[error] (Compile / compileIncremental) Compilation failed