Teoh Han Hui developed DevContainer JSONC Language Support for the zed-industries/zed repository, focusing on enhancing the developer experience in containerized environments. By associating devcontainer.json files with the JSONC language, Teoh enabled improved syntax highlighting and editing support across common IDEs, reducing onboarding time and minimizing editing errors for teams working with JSONC. The implementation leveraged configuration management and devcontainer setup skills, utilizing TOML for configuration handling. The work emphasized clear auditability and traceability by linking changes to specific issues, resulting in a robust editor integration that addressed a targeted workflow need without introducing new bugs during the development period.