facebook/react-native
Jun 2026 – Jun 2026
1 Month active
Languages Used
JavaJavaScriptKotlinObjective-CTypeScript
Technical Skills
Android DevelopmentCore GraphicsReact NativeUI/UX DesigniOS Development
Evan Jacobs
PROFILE
Evan Jacobs
Worked on enhancing cross-platform text decoration fidelity in the facebook/react-native repository, delivering support for multiple textDecorationStyle options such as solid, double, dotted, dashed, and wavy underlines and strikethroughs on both Android and iOS. Implemented Android rendering through a C++ to Kotlin pipeline with Canvas-based spans, while iOS support leveraged custom Core Graphics paths and a shared enum for style consistency. Addressed color propagation issues and improved multi-line decoration alignment. Utilized Java, Kotlin, and Objective-C to ensure browser-like visual parity, and contributed comprehensive unit, integration, and end-to-end tests to maintain reliability and reduce UI inconsistencies across platforms.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
2Total
Bugs
0
Commits
2
Features
1
Lines of code
1,016
Activity Months1
Your Network
400 peopleShared Repositories
400
hobostayMember
LS HungMember
Christian FalchMember
Alexander KlotzMember
ahmdshrifMember
Aliaksei AndreyeuMember
Peter AbbondanzoMember
Adam ErnstMember
Adan MorenoMember
Work History
June 2026
2 Commits • 1 Features
Jun 1, 2026June 2026 performance summary focused on cross-platform text decoration fidelity in React Native. Key features delivered include Android support for textDecorationStyle (solid, double, dotted, dashed, wavy) for both underline and line-through, wired through the C++ to Kotlin rendering pipeline and drawn via Canvas-based spans. iOS support added for textDecorationStyle (wavy, dotted, dashed) using custom Core Graphics paths, sharing the same TextDecorationStyle enum. Both platforms now render browser-like decorations with improved color propagation and reliability. Major bugs fixed include ensuring textDecorationColor properly applies to underlines and strikethroughs on Android (addressing long-standing issue 4579) and refining the iOS rendering of dotted/dashed/wavy styles for parity with web visuals. Testing and quality work included unit tests for TextDecorationStyle.fromString, RNTester verifications on Android, Fantom integration tests in Text-itest.js, and updated Jest/e2e screenshot validations. Impact includes significantly improved visual fidelity and cross-platform parity, reducing UI bugs and design-system drift while enabling designers to rely on consistent text styling across platforms. Technologies/skills demonstrated span React Native Fabric, C++/Kotlin integration, Java/Kotlin and Objective-C/Swift for platform-specific rendering, Core Graphics and Canvas drawing, and comprehensive testing (unit, integration, and e2e).
2 Commits • 1 Features
Jun 1, 2026June 2026 performance summary focused on cross-platform text decoration fidelity in React Native. Key features delivered include Android support for textDecorationStyle (solid, double, dotted, dashed, wavy) for both underline and line-through, wired through the C++ to Kotlin rendering pipeline and drawn via Canvas-based spans. iOS support added for textDecorationStyle (wavy, dotted, dashed) using custom Core Graphics paths, sharing the same TextDecorationStyle enum. Both platforms now render browser-like decorations with improved color propagation and reliability. Major bugs fixed include ensuring textDecorationColor properly applies to underlines and strikethroughs on Android (addressing long-standing issue 4579) and refining the iOS rendering of dotted/dashed/wavy styles for parity with web visuals. Testing and quality work included unit tests for TextDecorationStyle.fromString, RNTester verifications on Android, Fantom integration tests in Text-itest.js, and updated Jest/e2e screenshot validations. Impact includes significantly improved visual fidelity and cross-platform parity, reducing UI bugs and design-system drift while enabling designers to rely on consistent text styling across platforms. Technologies/skills demonstrated span React Native Fabric, C++/Kotlin integration, Java/Kotlin and Objective-C/Swift for platform-specific rendering, Core Graphics and Canvas drawing, and comprehensive testing (unit, integration, and e2e).
June 2026
Activity
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Quality Metrics
Correctness100.0%
Maintainability80.0%
Architecture90.0%
Performance80.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
JavaJavaScriptKotlinObjective-CTypeScript
Technical Skills
Android DevelopmentCore GraphicsReact NativeUI/UX DesigniOS Development
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