Worked on the shaka-player repository to address a critical regression affecting low-latency HLS live streaming. Focused on improving playback stability, the developer fixed an issue where rebuilt segments were not correctly passed during live playlist updates, which previously led to playback stalls after about ten seconds. The solution involved updating the mergeAndEvict logic to ensure only necessary segment merges occur, preserving performance optimizations for scenarios without playlist changes. This approach maintained the integrity of VOD and non-low-latency streams while robustly handling segment rebuilds. The work demonstrated strong proficiency in JavaScript, HLS, and video streaming technologies within a complex codebase.