Worked on the ClickHouse/click-ui repository to enhance the DatePicker component by introducing an allowOnlyDatesList prop, enabling restriction of selectable dates to a predefined list. This feature required updates to the component’s logic, as well as comprehensive modifications to stories and tests to ensure the new prop functioned as intended and respected business constraints. Leveraged React and TypeScript to implement and validate the enhancement, focusing on robust test coverage and clear developer documentation. The work improved the reliability and flexibility of date selection in the UI, supporting more precise business requirements in front end development scenarios without introducing new bugs.