“client.fetchUser”无法发送数据的问题

Question

我已经制作了一个 Discord Node.JS 机器人一段时间了，我正在处理“取消禁止”命令，但我遇到的问题是两个问题，首先它尝试取消禁止成员，即使他们没有被禁止，其次是最大的，client.fetchUser(toUnban)无法解析诸如“.username”和“.avatarURL”之类的内容。我尝试制作一个单独的系统来收集这些数据（因为它有效）并且它只能在函数中使用它。不在它之外。client.fetchUser(toUnban)  .then(user => console.log(user.username))  .then(user => usersname = user.username)  .catch(console.error)console.log(usersname)会打印（例如）Clichefoox如果在此函数之外调用，它将不打印任何内容。如果在里面调用它会打印一些东西。问题是我正在尝试使其获得 avatarURL 和用户名。所以我不知道如何在一个 RichEmbed 中实现两者。完整代码：const Discord = require('discord.js')exports.run = (client, message, args) => {  if (!message.member.hasPermission("BAN_MEMBERS") || !message.author == message.guild.owner) return message.channel.send("You don't have access to this command. :x:")  if (!message.guild.me.hasPermission("ADMINISTRATOR")) return message.channel.send(`${message.guild.owner} did not give me permission to do this! If you are the owner, please run this command \`${client.config.PREFIX}fixserver\`!`)  let toUnban = args[0]  if (!toUnban) return message.channel.send("You did not give a User ID!")  if (toUnban.includes("@")) { return message.channel.send("That is not a User ID!") }  let reason = args.slice(1).join(" ")  if (!reason) reason = "No reason."  var Embed = new Discord.RichEmbed()    .setColor('#ebe234')    .setTimestamp()    .setDescription(`**${client.fetchUser(toUnban).username}** has been unbanned from the server!`)    .setFooter(`V${client.config.VERSION} | ${toUnban}`, client.user.displayAvatarURL)    .setAuthor("Unbanned", client.fetchUser(toUnban).avatarURL)    .addField("User", message.author.tag, true)    .addField("Reason", reason, true)  var cEmbed = new Discord.RichEmbed()    .setColor('#2b2b2b')    .setTimestamp()    .setDescription(`**${client.fetchUser(toUnban).username}** has been unbanend.`)    .setAuthor("Unbanned", client.fetchUser(toUnban).avatarURL)    .addField("Reason", reason)预期的结果是它会根据Client#FetchUser理解用户名，它传递“User”类，所以我尝试将它称为普通的 User 类，但没有得到错误或输出，它只是空白。

Answer 1

.then(user => console.log(user.username))告诉代码接收用户，打印 user.username ，然后返回 console.log 的返回值，这是未定义的。

尝试

.then(user => {

  console.log(user.username);

  return user;

}

或者，更简洁

.then(user => console.log(user.username) || user)