IntelliJ Scala Plugin 2022.3 Is Out!

A full-blown IDE is one of the most complicated applications you can find on an average laptop. This is why we – the Scala plugin team at JetBrains – from time to time receive reports that our product lags in certain situations or works slowly in general. In some of these cases we can help, but in others – for example, when your codebase is big and complicated, or when your machine is old – there is not much we can do. Instead, there are some things you can try yourself to improve your IntelliJ IDEA and the Scala plugin experience, like implementing configuration tweaks and maintaining good co

ScalaCon 2022 has come and gone. It started on Tuesday, October 4, and over the course of 4 days, the audience had the chance to enjoy 21 talks and 2 keynotes. JetBrains was a Gold Sponsor of the event, which meant that we, the Scala Plugin team, had the opportunity to participate, present a lightning talk, and answer questions from attendees who came to our virtual booth. (more…)

This release has been again focused on improving Scala 3 support, but there are also a few other improvements. Better Scala 3 support As of v.2022.2, IntelliJ IDEA can read match types from .tasty files, properly parse them, resolve type variables, use them as type arguments, support inspections, and show types as text. On top of that, we’ve added support for Option-less extractors, type lambdas and polymorphic function types, type-level compiler intrinsics, and ? as a wildcard together with _ in Scala 2.13.9 and 2.12.16. Copy-pasted code is also now properly indented. Compiler

This release has been focused on improving Scala 3 support. There are also several new features to help with day-to-day Scala programming. Let’s take a closer look: 1. Scala 3 support improvements 2. New Scala project wizard 3. Alias exports 4. Unused declaration inspection 5. Scala debugger upgrades Scala 3 support improvements This release includes many Scala 3 support improvements: It is now possible to autocomplete extension methods (to see methods from other objects, press Ctrl+Alt+Space twice). The editor offers to import extension methods and given instances automatically. New i

This release brings more improvements to Scala 3 support. There are also several new features to help with day-to-day Scala programming. Let's take a closer look: 1. Scala 3 support improvements 2. Open cross-compiled projects as Scala 2 3. Data flow analysis for Scala 4. Autocomplete for Scala compiler options 5. Inlay hints for ranges Scala 3 support improvements Our main focus in this release has been Scala 3 support: We've added highlighting, navigation, and autocompletion for end markers. Autocompletion is now provided for the given, using, and export keywords, soft keywords, and th

One of the things IntelliJ IDEA is most famous for is its huge variety of helpful inspections and warnings. They make the lives of programmers significantly easier, frequently showing them errors in logic or style that they wouldn’t have noticed otherwise. Those inspections come in various shapes and sizes, ranging from simple pattern searches to highly sophisticated inspections that require tons of complex static code analysis behind the scenes. Among the most advanced examples of the latter are those offered with the help of dataflow analysis. These inspections have been available for

This release has been focused on significantly improving our plugin’s Scala 3 support. There are also several new features, including a Package Search integration and optional compiler-based error highlighting. Better Scala 3 support Indexing of Scala 3 libraries is now fast, precise, and version-agnostic. You can now create both sbt and .idea-based Scala 3 projects, and create Scala 3 SDKs the normal way: The editor can handle significant indentation better: There are improvements in the debugger, formatter, REPL, auto-import, enums, extension methods, and many other areas: That said, p

Package Search is a service developed by JetBrains that supports searching for libraries from multiple repositories such as Maven Central, Google Maven, and others. Since its introduction at the end of 2019, the Package Search plugin has made searching for and managing dependencies for Maven and Gradle projects more convenient. Starting with the Scala plugin 2021.2 release, the Package Search plugin features will also be available for sbt projects. In addition, the Package Search APIs are integrated to help users manage library dependencies directly from the IntelliJ IDEA editor. From th

With this major version, we've focused primarily on the performance and overall quality of the plugin. We’ve still added a number of new features to help with day-to-day Scala programming. Let's take a closer look. 1. Kinds in type diffs 2. Machine learning completion 3. Phases and units in compilation charts 4. Scala 3.0.0-RC2 support 5. IntelliJ Platform plugin template 6. And more! Kinds in type diffs Scala developers don't always use higher-kinded types, but when they do, they like to do it with style. The type diff tooltip now supports kinds: Bec

It so happens that this year's Scala Days is Scala Love in the City. The online conference promises to be exciting. It includes some of the most well-known names in the Scala world, with Martin Odersky as a keynote speaker. And the virtual food is amazing ;) If you haven't registered yet, make sure to catch up before February 13. (Registration is virtually free!). The event is lovingly supported by JetBrains. Whereas last year the IntelliJ Scala team hosted a separate Harmony track at the Scala Love conference, this year we'll have a virtual booth. To provide an authentic experience, we'll ha

Most releases are focused on editor features, but the stars of this show are parallel compilation and compilation charts. We also have a handful of editor goodies in store. Let's take a closer look. 1. Parallel Compilation 2. Compilation Charts 3. Enhanced Package Prefixes 4. MUnit Support 5. Scala 3 Improvements 6. And more! Parallel Compilation According to the official Scala Developer Survey, long compilation times is the main pain point in Scala programmers' daily workflows by a large margin. Although speeding up the Scala compiler is a worthy goal