Worked on the pedroslopez/whatsapp-web.js repository to address a critical issue in business and enterprise contact management. Focused on enhancing the getContacts functionality, the developer delivered a targeted bug fix that ensures business and enterprise profiles are reliably fetched and attached during contact retrieval. By refining the JavaScript logic and improving return paths, the update reduced edge-case failures and improved data integrity for enterprise workflows, particularly in CRM integrations. The work emphasized robust handling of business contacts, contributing to greater stability and maintainability of the codebase. Skills demonstrated include JavaScript and full stack development within a collaborative open-source environment.