Unknown name for enum field with Scala.js

[plokhotnyuk]

Compiler version(s)

scalac 3.1.1 + scala.js 1.9.0

Minimized code

object LocationType extends Enumeration {
  type LocationType = Value

  val IP, GPS: LocationType = Value
}

LocationType.GPS.toString

Output

"<Unknown name for enum field #1 of class class scala.Enumeration$Val>"

Expectation

"GPS"

[sjrd]

Ah, yes, Enumeration. We never ported the compiler support for scala.Enumeration to Scala 3. I guess I was hoping that they would have disappeared in favor of enums.

Work around: give explicit names to the fields:

object LocationType extends Enumeration {
  type LocationType = Value

  val IP: LocationType = Value("IP")
  val GPS: LocationType = Value("GPS")
}

[sjrd]

What would people think about releasing the support for Enumeration in a separate compiler for Scala 3? The use cases are rare, now that enum is there, and I hope we can eventually sunset it. Publishing it as a compiler plugin would reduce the maintenance burden, and compile-time performance for everyone that doesn't use Enumeration.