Scala 3 support in IntelliJ Scala plugin

We added basic Dotty support in the IntelliJ Scala plugin a long time ago, right after the announcement of Dotty. However, for a long time Dotty has been a dark horse, and aiming at a moving target hadn’t been easy. So it was reasonable to put that task on the back-burner and focus on Scala 2 for a while. Now that Dotty is finally destined to become Scala 3 and the language features are getting more stable, we have started to work on a full-fledged Scala 3 support.

The 2020.1 Scala plugin nightly builds now include preliminary support for Scala 3: the new syntax (by the way, we had to adjust that “given” thing several times already :) ), error highlighting, navigation, type info, and many other bread-and-butter IDE features. Although the functionality is already usable, it is still “in beta” – some bumps here and there are expected. We depend on your feedback to smooth the rough edges and make Scala 3 support as good as Scala 2 one (and possibly even better, because, just as Dotty, we now have a lot of experience to rely on).

Trying the nightly builds is easy:

  1. Download IntelliJ IDEA 2020.1 EAP (that’s a good opportunity to try the Toolbox App, which allows you to quickly install, update, or rollback IntelliJ IDEA versions; and you may have different versions next to each other).
  2. Open Settings | Languages | Scala | Updates.
  3. Select Nightly plugin update channel and press Check for updates (you can always select EAP or Release to revert to a more stable build; alternatively, you can download any Scala plugin build from the Plugin Repository).

If you haven’t yet tried Dotty, now is as good time as ever – clone the Dotty example project  and open it in IntelliJ IDEA. Your feedback is very welcome, as always. Feel free to ask any questions in intellij-scala Gitter channel. Report any bugs to YouTrack.

IntelliJ Scala plugin team

About Pavel Fatin

Programming enthusiast, technology advocate. IntelliJ Scala plugin developer at JetBrains,
This entry was posted in New Features, News and Events. Bookmark the permalink.

Leave a Reply

Your email address will not be published. Required fields are marked *