roslyn
https://github.com/dotnet/roslyn
C#
The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.
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- Issues
- [Bug] VS 18.4.0 (Feb 2026): MEF Catalog construction failures — Missing Xamarin.VisualStudio.Interfaces v18.0.0.0 & LiveShare.WebEditors causing IDE features to crash (Exit code -2146232797)
- Add regex search support to NavigateTo
- Centralize Roslyn analyzers-from-source opt-in and preserve Microsoft.CodeAnalysis.Analyzers package dependency
- Avoid unnecessary red node allocations in ReduceOneNodeOrTokenAsync by replacing .Single() with .First()
- Remove `.mvid` section.
- Allow for better parallelization with brokered services
- Unable to find documentation on some enum values like PointMemberAccessExpression
- Embed AnalyzerConfigFiles in binlog
- Add support for skipping analyzing banned API analysis in generated files
- Update Microsoft.CodeAnalysis.Analyzers to a release version
- Docs
- C# not yet supported