I have a pretty large codebase written in scala 2.12 or so (whatever the version was around late 2018). I'd like to migrate it to scala 3. Any ideas how hard it'll be?
Start with migrating to scala 2.13, scala 3 can run all non-macro 2.13 code that doesn't emit deprecation warnings and can consume most 2.13 libraries. The widely-used ones it can't will get updated.
For more information see https://scalacenter.github.io/scala-3-migration-guide/docs/c...