swiftlang/swift-foundation
Mar 2026 – Apr 2026
2 Months active
Languages Used
SwiftYAML
Technical Skills
API DesignConcurrencyData ManagementMemory ManagementProtocol-Oriented ProgrammingSoftware Development
Jeremy Schonfeld
PROFILE
Jeremy Schonfeld
Over a three-month period, contributed to swiftlang repositories by building and refining core features in Swift Foundation and swift-syntax. Developed enhancements to macro expansion by exposing build configuration in BasicMacroExpansionContext, enabling more robust macro tooling. Focused on data handling improvements, including API and ABI refinements, concurrency upgrades using mutexes, and memory management optimizations to boost reliability and performance. Strengthened cross-platform support by migrating Android and WebAssembly builds to native systems and addressing memory alignment issues. Leveraged Swift and YAML, applying skills in backend development, testing, and build system configuration to deliver maintainable, portable, and stable solutions across platforms.
Overall Statistics
Feature vs Bugs
83%Features
Repository Contributions
13Total
Bugs
1
Commits
13
Features
5
Lines of code
2,325
Activity Months3
Your Network
122 peopleWork History
April 2026
3 Commits • 1 Features
Apr 1, 2026April 2026 monthly summary for swift-foundation: Strengthened testing infrastructure, improved cross-platform build reliability, and hardened memory correctness. Delivered two main commits and validated platform compatibility across Android and WASM, with a broader impact on stability and performance.
3 Commits • 1 Features
Apr 1, 2026April 2026 monthly summary for swift-foundation: Strengthened testing infrastructure, improved cross-platform build reliability, and hardened memory correctness. Delivered two main commits and validated platform compatibility across Android and WASM, with a broader impact on stability and performance.
April 2026
March 2026
9 Commits • 3 Features
Mar 1, 2026Concise monthly summary for swift-foundation (March 2026). Focused on delivering robust data handling features, improving performance and reliability, and enabling easier maintenance. Highlights include API/ABI refinements, threading improvements, and clearer predicate namespace usage with aligned tests.
March 2026
9 Commits • 3 Features
Mar 1, 2026Concise monthly summary for swift-foundation (March 2026). Focused on delivering robust data handling features, improving performance and reliability, and enabling easier maintenance. Highlights include API/ABI refinements, threading improvements, and clearer predicate namespace usage with aligned tests.
January 2026
1 Commits • 1 Features
Jan 1, 2026In 2026-01, focused on enhancing SwiftSyntax's macro expansion capabilities by exposing the shared build configuration through BasicMacroExpansionContext. Implemented a new property 'buildConfiguration' to enable downstream tooling to access the build state during macro expansion, improving configurability, debugging, and consistency across the pipeline. This work lays groundwork for more robust macro features and richer integration with the Swift toolchain.
1 Commits • 1 Features
Jan 1, 2026In 2026-01, focused on enhancing SwiftSyntax's macro expansion capabilities by exposing the shared build configuration through BasicMacroExpansionContext. Implemented a new property 'buildConfiguration' to enable downstream tooling to access the build state during macro expansion, improving configurability, debugging, and consistency across the pipeline. This work lays groundwork for more robust macro features and richer integration with the Swift toolchain.
January 2026
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Quality Metrics
Correctness98.4%
Maintainability87.6%
Architecture92.2%
Performance90.8%
AI Usage23.0%
Skills & Technologies
Programming Languages
SwiftYAML
Technical Skills
API DesignAndroid developmentConcurrencyData ManagementMemory ManagementProtocol-Oriented ProgrammingSoftware DevelopmentSwiftSwift DevelopmentSwift programmingSystem DesignTestingUnit TestingWebAssemblybackend development
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline
swiftlang/swift-syntax
Jan 2026 – Jan 2026
1 Month active
Languages Used
Swift
Technical Skills
Swiftbackend development