Benoit Simard enhanced the TimePicker component in the OpenRailAssociation/osrd-ui repository, focusing on improving user experience and maintainability. He refactored the component to clearly separate general input properties from time-specific ones such as hours, minutes, and seconds, which clarified the API and reduced potential for misuse. Leveraging React and TypeScript, he optimized performance by introducing useCallback and ensured robust prop handling so that external properties could reliably override defaults. This work addressed a property resolution bug and resulted in smoother time input interactions, easier future updates, and more flexible configuration for front-end developers working with JavaScript and TypeScript.