Developed a feature for the eslint-plugin-package-json repository that enhances package.json file consistency by sorting non-standard properties lexicographically after standard ones. This update streamlines configuration files, making them easier to review and reducing the risk of configuration drift across projects. The implementation leveraged TypeScript and ESLint plugin development patterns, focusing on commit-driven workflows and precise handling of edge-case property sorting. By aligning with repository standards and providing clear documentation, the work improved maintainability and predictability of lint results. No bugs were addressed during this period, with efforts concentrated on delivering targeted, maintainable linting behavior that benefits contributor productivity and code clarity.