Fernando Mondo developed a feature for the pedroslopez/whatsapp-web.js repository that enables retrieval of original message IDs for revoked messages. By introducing a protocolMessageKey, Fernando ensured that revoked messages could reference their original identifiers, preserving before.id and maintaining accurate message history. This protocol enhancement, implemented using JavaScript and full stack development skills, addressed challenges in message integrity and improved the user experience during message revocation scenarios. The work was delivered as a focused, well-documented commit, aligning with repository standards and contributing to reduced support friction. Fernando’s contribution demonstrated thoughtful engineering depth within a targeted, high-impact code change.