Developed and delivered the uniqueByProperty utility for the lokalise/shared-ts-libs repository, enabling property-based deduplication of arrays within the Universal TS Utils library. This feature was implemented using TypeScript and JavaScript, with a focus on creating reusable utility functions that enhance data integrity across shared services. Comprehensive unit tests were written to validate the utility’s correctness in multiple scenarios, ensuring robust handling of diverse data sets. By simplifying common data-processing patterns and reducing downstream duplicates, this work improved the maintainability and reliability of shared code. The approach emphasized thorough testing and practical utility in TypeScript-based environments.