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
- Collection expressions are suggested for types where it doesn't make sense, and their error messages show inconsistent types
- [C#] Make interpolated strings including string or char constants as optimized as `+` operator (for string type)
- Reduce byte[] allocations when opening files
- [VB] Improve casting from floating-point or decimal types to integer types in more cases
- Initial proposal for artifacts
- Diagnostics produced by source generators should be listed in Solution Explorer's Analyzers tree
- Cancel the request to copilot when typing start
- IDE0305 "collection initialization can be simplified" spoils chained LINQ calls
- Improve GetNextToken / GetPreviousToken perf
- Enable support for an LSP client to open source generated files
- Docs
- C# not yet supported