facebook/react-native
Apr 2026 – Jun 2026
3 Months active
Languages Used
C++JavaJavaScriptObjective-C++KotlinObjective-C
Technical Skills
C++C++ developmentDebuggingError handlingEvent HandlingJavaScript
Kevin Gozali
PROFILE
Kevin Gozali
Over a three-month period, contributed to the facebook/react-native repository by delivering stability, performance, and reliability improvements across core mobile infrastructure. Focused on React Native internals, implemented event handling and rendering fixes in C++ and Objective-C++ to reduce crash surfaces and improve update consistency. Developed a Scheduler Delegate Invalidation mechanism with feature flag support, preventing use-after-free crashes in bridgeless runtimes and enhancing test coverage with new C++ unit tests. Restored native startup timing visibility for bridgeless deployments, exposing performance metrics to app code. The work emphasized concurrency management, robust error handling, and cross-language integration, supporting maintainable and resilient mobile applications.
Overall Statistics
Feature vs Bugs
80%Features
Repository Contributions
13Total
Bugs
1
Commits
13
Features
4
Lines of code
1,579
Activity Months3
Your Network
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Work History
June 2026
1 Commits • 1 Features
Jun 1, 2026June 2026 performance summary for facebook/react-native: Implemented Bridgeless Performance Monitoring exposure to app code, restoring native startup timing collection in bridgeless mode and aligning with legacy bridge patterns. Exposed a real performanceLogger via RCTBridgeProxy and posts RCTJavaScriptDidLoadNotification after JS bundle load, enabling startup timing data to be captured by existing consumers. Maintained complete parity with legacy bridge, with no changes to its path. Delivered through PR #57083 (commit 9568de5a2dd1277f7cb3051d394475e5cd1130e3). Business value: improved observability, faster diagnosis of performance regressions, and consistent startup metrics across bridgeless deployments.
1 Commits • 1 Features
Jun 1, 2026June 2026 performance summary for facebook/react-native: Implemented Bridgeless Performance Monitoring exposure to app code, restoring native startup timing collection in bridgeless mode and aligning with legacy bridge patterns. Exposed a real performanceLogger via RCTBridgeProxy and posts RCTJavaScriptDidLoadNotification after JS bundle load, enabling startup timing data to be captured by existing consumers. Maintained complete parity with legacy bridge, with no changes to its path. Delivered through PR #57083 (commit 9568de5a2dd1277f7cb3051d394475e5cd1130e3). Business value: improved observability, faster diagnosis of performance regressions, and consistent startup metrics across bridgeless deployments.
June 2026
May 2026
4 Commits • 2 Features
May 1, 2026In May 2026, focused on stability and reliability in React Native's rendering path for bridgeless runtimes. Implemented Scheduler Delegate Invalidation to prevent use-after-free crashes when a SchedulerDelegate is destroyed during rendering updates. This includes per-delegate invalidation tokens, a destructor/flip mechanism, and a gating feature flag to opt-in for apps. Added the necessary feature-flag boilerplate across native/C++ and JS/Kotlin layers. Introduced a dedicated C++ unit test for the Scheduler delegate UAF scenario to validate the guard. Re-enabled two LayoutAnimation stress tests after Yoga/layout changes to improve test coverage and confidence in animation behavior. Overall improvements enhance crash resilience, predictability of rendering updates, and cross-layer test coverage while preserving backward compatibility for existing apps.
May 2026
4 Commits • 2 Features
May 1, 2026In May 2026, focused on stability and reliability in React Native's rendering path for bridgeless runtimes. Implemented Scheduler Delegate Invalidation to prevent use-after-free crashes when a SchedulerDelegate is destroyed during rendering updates. This includes per-delegate invalidation tokens, a destructor/flip mechanism, and a gating feature flag to opt-in for apps. Added the necessary feature-flag boilerplate across native/C++ and JS/Kotlin layers. Introduced a dedicated C++ unit test for the Scheduler delegate UAF scenario to validate the guard. Re-enabled two LayoutAnimation stress tests after Yoga/layout changes to improve test coverage and confidence in animation behavior. Overall improvements enhance crash resilience, predictability of rendering updates, and cross-layer test coverage while preserving backward compatibility for existing apps.
April 2026
8 Commits • 1 Features
Apr 1, 2026Month: 2026-04 — Focused on stabilizing core React Native internals, improving correctness in event handling, tracing, and rendering, and strengthening code safety and maintainability. Delivered targeted fixes that reduce crash surfaces, preserve native timestamps, and ensure consistent update ordering, along with broader code-quality improvements to guard against nullability and ordering issues. The work improves production reliability for apps relying on complex gestures and UI updates, and positions the project for smoother platform updates (iOS/Android) and easier future maintenance. Key technologies demonstrated include C++, Objective-C++, React Native internals, CDP/tracing, layout/mutation pipelines, and modern static analysis patterns.
8 Commits • 1 Features
Apr 1, 2026Month: 2026-04 — Focused on stabilizing core React Native internals, improving correctness in event handling, tracing, and rendering, and strengthening code safety and maintainability. Delivered targeted fixes that reduce crash surfaces, preserve native timestamps, and ensure consistent update ordering, along with broader code-quality improvements to guard against nullability and ordering issues. The work improves production reliability for apps relying on complex gestures and UI updates, and positions the project for smoother platform updates (iOS/Android) and easier future maintenance. Key technologies demonstrated include C++, Objective-C++, React Native internals, CDP/tracing, layout/mutation pipelines, and modern static analysis patterns.
April 2026
Activity
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Quality Metrics
Correctness100.0%
Maintainability89.2%
Architecture95.4%
Performance89.2%
AI Usage23.0%
Skills & Technologies
Programming Languages
C++JavaJavaScriptKotlinObjective-CObjective-C++
Technical Skills
C++C++ developmentC++ programmingC++ testingConcurrency managementDebuggingError handlingEvent HandlingJava programmingJavaScriptKotlin programmingMemory managementPerformance OptimizationReact NativeReact Native architecture
Repositories Contributed To
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