During November 2024, cnscoo focused on enhancing the robustness of enum deserialization in the alibaba/fastjson2 repository. Addressing a bug where enums with Integer value fields could not be deserialized from JSON strings, cnscoo implemented logic to convert non-String values to String before storage, ensuring compatibility with APIs that encode enum values as stringified integers. This solution was delivered alongside targeted unit tests, expanding test coverage and reliability for integer-based enums. Working primarily with Java and Kotlin, cnscoo demonstrated depth in enum handling and JSON deserialization, contributing a focused, well-tested fix that improved the codebase’s overall compatibility.