Worked on the element-plus/element-plus repository to enhance the reliability of user input handling in Vue.js applications. Focused on a targeted bug fix for the Input component, ensuring that when both a formatter and parser are configured, the emitted @change event value is correctly processed through the parser. This adjustment improved data consistency across forms and analytics by aligning event payloads with established formatting logic. The work was implemented using TypeScript and Vue, resulting in a low-risk, well-scoped improvement that stabilized input workflows without introducing new features or affecting existing behavior, thereby supporting more predictable frontend development and integration scenarios.