Remove EAsSet[E]
and WAsSet[W]
traits in Transformers.scala
to address IntelliJ error
#3840
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This PR removes the
EAsSet[E]
andWAsSet[W]
traits inTransformers.scala
, and instead just duplicates a few lines of code betweenSetsGeneralTransformer
andSetsTransformerWithErrors
.As a result, we fix an annoying issue where IntelliJ incorrectly reports an error on every inheritor of these classes, falsely claiming that
errorUnit()
has an incorrect return type.Given that the cost here is low, and similar issues have bitten us in the past by blocking use of the debugger (#3816), I think this is a worthwhile change. If no one is opposed, I plan to address any similar incorrectly-reported IntelliJ errors as I encounter them.