Deleting Messages
const jid = "1234@s.whatsapp.net"; // can also be a group
const response = await sock.sendMessage(jid, { text: "hello!" }); // send a message
// sends a message to delete the given message
// this deletes the message for everyone
await sock.sendMessage(jid, { delete: response.key });
note
Deleting for oneself is supported via chatModify
(next section)