Worked on the facebook/react-native repository to address stability issues specific to Apple Silicon iOS build environments. Focused on resolving a crash in the TextInput component by reverting a previous change in AttributedString that had disabled the WeakEventEmitter, which was causing serialization failures. Utilized React Native and Objective-C++ to restore the expected event handling behavior, ensuring that TextInput functioned reliably on Apple Silicon Macs. This work improved both build and runtime stability, particularly in continuous integration workflows, by reducing flaky failures related to TextInput. No new features were introduced during this period, with efforts concentrated on targeted debugging and rollback management.