Worked on the supabase/supabase-js repository to enhance the stability of real-time data handling by addressing a critical bug in the convertChangeData function. Focused on improving null-safety, the developer ensured that when the 'record' input is null, the function now returns an empty object, preventing potential runtime exceptions in real-time streams. This change was reinforced by adding targeted unit tests, which increased test coverage and provided stronger regression protection. The work involved TypeScript and emphasized robust API development and real-time data processing. Documentation and CI stability were maintained to support maintainers and users in adopting the improved handling.