roslyn
https://github.com/dotnet/roslyn
C#
The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.
Triage Issues!
When you volunteer to triage issues, you'll receive an email each day with a link to an open issue that needs help in this project. You'll also receive instructions on how to triage issues.
Triage Docs!
Receive a documented method or class from your favorite GitHub repos in your inbox every day. If you're really pro, receive undocumented methods or classes and supercharge your commit history.
C# not yet supported479 Subscribers
Add a CodeTriage badge to roslyn
Help out
- Issues
- MSBuildWorkspace: Load projects for languages that do not have a known command line parser
- Thousands of phantom IntelliSense errors on VS 2026
- fix: cs8618 required suggestion
- Reduce duplicated FileUtilities.GetFileTimeStamp calls
- Fix ref safety holes in delegate conversions across old/new rule boundaries
- feat(formatter): Add configurable parameter wrapping for conditionals and method call chains
- Change logic for how we cache GeneratorDrivers to avoid initialization
- Fix redundant error reporting in deconstruction assignments
- Move package publishing out of Roslyn official build
- Support using `string.Concat(ReadOnlySpan<string>)` for string lowering
- Docs
- C# not yet supported