Discord.js v12如何获取对特定消息做出反应的人的id？

const Discord = require('discord.js');
const client = new Discord.Client();

client.on('ready', () => {
  console.log(`Logged in as ${client.user.tag}`);
});

client.on('messageReactionAdd', (reaction, user) => {
  // 检查消息是否是目标消息
  if (reaction.message.id === '目标消息的ID') {
    // 获取用户的ID
    const userId = user.id;
    console.log(`User ${userId} reacted to the message.`);
  }
});

client.login('YOUR_DISCORD_TOKEN');