Unal Muslu focused on refining ESLint import sorting rules within the Commencis/js-toolkit repository, addressing a bug that affected React import consistency and path matching. He enhanced the regular expressions used for import detection to include variations such as react-native and react-dom, and introduced support for optional trailing slashes in component paths. This adjustment improved the accuracy and uniformity of import sorting across the codebase, reducing unnecessary lint warnings and strengthening CI reliability. Working primarily with TypeScript, ESLint, and regular expressions, Unal also expanded edge-case test coverage, ensuring the updated rules handled a broader range of import scenarios effectively.