EXCEEDS logo
Exceeds
Mo Binni

PROFILE

Mo Binni

During February 2026, Mbinni focused on improving memory management in the facebook/react-native repository by addressing a long-standing memory leak in the TextInput component. Using C++ and React Native, Mbinni ported an upstream fix to BaseTextInputShadowNode.h, clearing props and state to prevent retain cycles that caused memory growth in long-lived views. The work involved memory profiling with XCode Instruments, upstream collaboration to confirm the leak’s origin, and end-to-end validation through a documented test plan. This targeted bug fix enhanced runtime performance and stability for iOS TextInput usage, demonstrating depth in diagnosing and resolving complex front end and native code issues.

Overall Statistics

Feature vs Bugs

0%Features

Repository Contributions

1Total
Bugs
1
Commits
1
Features
0
Lines of code
14
Activity Months1

Work History

February 2026

1 Commits

Feb 1, 2026

February 2026 monthly summary for facebook/react-native work focusing on TextInput stability and upstream collaboration. Key features delivered: - Implemented memory leak fix for TextInput by clearing props and state to avoid retain cycles; ported the upstream solution to BaseTextInputShadowNode.h (commit 5229e507e1a1cb0cff00ab49fb21f9d47438582d). Major bugs fixed: - Resolved a TextInput memory leak that manifested during local FPS monitoring, improving memory management and runtime performance. Overall impact and accomplishments: - Enhanced app stability and performance for TextInput usage across iOS; reduced long-term memory growth in long-lived views. - Strengthened upstream collaboration with React Native/core teams; ported a 6-year-old upstream fix and completed end-to-end validation. - PR 55719 merged with differential revision D94267721; code reviews by NickGerleman and mdvacca; test plan and reproduction included. Technologies/skills demonstrated: - Memory profiling and leak diagnosis (XCode Instruments) - iOS native code changes in TextInput internals (BaseTextInputShadowNode.h) - Upstream patch porting and cross-team collaboration - PR workflow, code review, and test planning (Expo Snack reproduction)

Activity

Loading activity data...

Quality Metrics

Correctness100.0%
Maintainability100.0%
Architecture100.0%
Performance100.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

C++

Technical Skills

C++React Nativefront end development

Repositories Contributed To

1 repo

Overview of all repositories you've contributed to across your timeline

facebook/react-native

Feb 2026 Feb 2026
1 Month active

Languages Used

C++

Technical Skills

C++React Nativefront end development