Contributed to the bkeepers/vueuse repository by implementing ElementUI and ElementPlus breakpoint support within the useBreakpoints composable, enabling consistent responsive behavior across Vue.js projects that utilize these UI frameworks. The work involved defining and exporting new breakpoint values, aligning responsive design with established design systems and reducing the need for custom breakpoint maintenance. All changes were documented in Markdown and written in TypeScript, ensuring clarity and reusability for other developers. The update maintained backward compatibility and passed continuous integration checks, enhancing developer productivity and ecosystem compatibility without introducing new bugs or regressions during the development period.