问获取用户的最后一条消息

EN

/*
 * within an async function,
 * inside command code,
 * assuming 'args' is an array of arguments
*/

try {
  const user = await client.fetchUser(args[1]);
  if (!user) return message.channel.send('Oh no, invalid user ID.');

  const lastMessage = user.lastMessage;
  if (!lastMessage) return message.channel.send('No messages from this user found.');

  message.channel.send({lastMessage.content, lastMessage.embed, lastMessage.attachments});
} catch(err) {
  console.error(err);
}