Discord.js 如何知道用户是否阻止了机器人

Question

我编写了让机器人向用户发送私人消息的代码，我需要知道用户是否阻止了机器人或未能向他发送消息。

这是我尝试过的。如果失败，我不希望机器人在下面发送消息：

消息已发送！

if(message.content.startsWith(prefix+'send')){
    if(!botOwner.includes(message.author.id)) return;
    let userID = 'ID'; //to send
    let channel = message.guild.channels.get(message.channel.id);
    let user = bot.users.get(userID);
    let myMessage = message.content.split(' ').slice(1).join(' ');
    if(!myMessage) return;


    user.send(myMessage)
    .then(channel.send('Message Sent!')) //The problem in this line <-
    .catch(err => {
        console.error(err)
        message.channel.send(`**${user.username}**, Failed to send him ❌`)
    });
}

Answer 1

将一个函数传递给then()。

// Keep in mind that 'user' is a GuildMember the way it's been defined, not a User.

user.send(myMessage)
  .then(() => message.channel.send(':incoming_envelope: Message sent successfully!'))
  .catch(err => {
    console.error(`Error while sending message to ${user.displayName}...\n`, err);

    message.channel.send(':x: Message could not be sent.')
      .catch(err => console.error(`Error while sending error message...\n`, err));
  });

Answer 2

我会这样做：

var error = false;

user.send(myMessage)
 .catch(err => {

  error = true;

  console.error(err)
  message.channel.send(`**${user.displayName}**, Failed to send message. ❌`)

 });

if (!error) channel.send('Message Sent!')