dotnet/runtime
Jan 2026 – Feb 2026
2 Months active
Languages Used
C#JavaScriptTypeScript
Technical Skills
C# DevelopmentError HandlingJavaScript InteropUnit TestingMarshalingWebAssembly
Marc Zwart
PROFILE
Marc Zwart
Marc Briskey enhanced the dotnet/runtime repository by focusing on JavaScript interop reliability and performance. He delivered a robust fix for argument validation and error handling, ensuring exceptions are correctly marshaled across Task boundaries and covering edge cases such as data type overflows. In the following month, Marc implemented marshalling enhancements for float arrays, Span<float>, and ArraySegment<float>, optimizing cross-runtime data transfer between managed C# and JavaScript code. His work leveraged C#, JavaScript, and WebAssembly, resulting in more predictable error propagation and improved throughput for browser-based interop workloads, demonstrating a deep understanding of runtime internals and cross-language collaboration.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
2Total
Bugs
1
Commits
2
Features
1
Lines of code
863
Activity Months2
Work History
February 2026
1 Commits • 1 Features
Feb 1, 2026February 2026 — Focused on advancing JavaScript interop in dotnet/runtime by delivering marshalling enhancements for float[], Span<float>, and ArraySegment<float> to optimize cross-runtime data transfer between managed code and JavaScript. The feature, JavaScript Interop Marshalling Enhancements, was implemented with commit f84f00920e1719071492b260375af0d4403d340e (co-authored by pavelsavara). No major bugs fixed in this period. Impact: improved performance for browser-based interop workloads, reduced allocations, enabling high-throughput numeric data exchange across the .NET-JS boundary. Technologies/skills demonstrated: .NET runtime internals, interop marshaling, Span<T>, ArraySegment<T>, cross-language collaboration, Git workflows.
1 Commits • 1 Features
Feb 1, 2026February 2026 — Focused on advancing JavaScript interop in dotnet/runtime by delivering marshalling enhancements for float[], Span<float>, and ArraySegment<float> to optimize cross-runtime data transfer between managed code and JavaScript. The feature, JavaScript Interop Marshalling Enhancements, was implemented with commit f84f00920e1719071492b260375af0d4403d340e (co-authored by pavelsavara). No major bugs fixed in this period. Impact: improved performance for browser-based interop workloads, reduced allocations, enabling high-throughput numeric data exchange across the .NET-JS boundary. Technologies/skills demonstrated: .NET runtime internals, interop marshaling, Span<T>, ArraySegment<T>, cross-language collaboration, Git workflows.
February 2026
January 2026
1 Commits
Jan 1, 2026January 2026 — Focused on reliability improvements and bug fixes in the dotnet/runtime repository, specifically around JavaScript interop. Delivered a critical fix for JavaScript interop argument validation and error handling, ensuring invalid arguments correctly throw and marshal exceptions across Task boundaries. Implemented comprehensive tests covering edge cases, including overflow scenarios across multiple data types, to improve robustness of cross-language interop paths. Business impact: reduces runtime failures and support incidents for JS interop scenarios used by downstream applications, enabling more predictable cross-language behavior and smoother developer experience.
January 2026
1 Commits
Jan 1, 2026January 2026 — Focused on reliability improvements and bug fixes in the dotnet/runtime repository, specifically around JavaScript interop. Delivered a critical fix for JavaScript interop argument validation and error handling, ensuring invalid arguments correctly throw and marshal exceptions across Task boundaries. Implemented comprehensive tests covering edge cases, including overflow scenarios across multiple data types, to improve robustness of cross-language interop paths. Business impact: reduces runtime failures and support incidents for JS interop scenarios used by downstream applications, enabling more predictable cross-language behavior and smoother developer experience.
Activity
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Quality Metrics
Correctness90.0%
Maintainability80.0%
Architecture90.0%
Performance80.0%
AI Usage30.0%
Skills & Technologies
Programming Languages
C#JavaScriptTypeScript
Technical Skills
C# DevelopmentError HandlingJavaScript InteropMarshalingUnit TestingWebAssembly
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