Kate Mihalikova contributed to the maplibre/maplibre-gl-js repository by addressing a persistent issue in the RasterDEMTileSource component, where tiles could become stuck in a reloading state. She implemented a targeted fix in TypeScript, ensuring tiles transition reliably to the loaded state and improving overall tile stability. To validate the solution, Kate expanded the unit test suite, covering the new logic and edge cases through collaborative review. She also updated the project changelog to document these improvements. Her work demonstrated a strong grasp of front end development and unit testing, focusing on code quality and maintainability within a complex mapping library.