Worked on the taiga-family/taiga-ui repository, focusing on improving the reliability of the calendar range preset filtering logic. Addressed a bug where preset filtering did not correctly enforce both minimum and maximum length constraints, ensuring that the calendar feature now accurately reflects user requirements. Utilized TypeScript and JavaScript for component development and front-end problem solving, applying test-driven development practices to maintain code quality. Added comprehensive unit tests to verify the corrected filtering behavior, aligning with the project’s emphasis on robust UI components. This work contributed to the overall stability and correctness of the taiga-ui kit’s calendar functionality during the period.