surface: Simplify extractSymbol - avoid .tree to make library working with Scala 3.4.2 #3533
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Followup to #3521
The method
extractSymbol
used to dealias inner types for both opaque types and type aliases does not work when the library is used from Scala 3.4.2 application. The reason is infamous.tree
method again, which is known and documented to be unreliable.I am not sure why it was used, the code seems simpler without it, but maybe I am missing something. After the simplification all tests still pass.