Discord.js - TypeError：message.guild.fetchMember 不是函数

Question

我的代码有点问题。下面你会看到给我带来问题的一段代码。

client.on('messageReactionAdd', (reaction, user) => {
  if(user.bot) return;
        let message = reaction.message, emoji = reaction.emoji;

        if (emoji.name == '?') {
                message.guild.fetchMember(user.id).then(member => {
                        member.addRole('759729116931948573');
                });
        }

        else if (emoji.name === '') {
                message.guild.fetchMember(user.id).then(member => {
                        member.addRole('759768642580906026');
                });
        }

        // Remove the user's reaction
        reaction.remove(user);
});

当我执行我的 Discord 机器人并在这种情况下对消息做出反应时，我收到此错误。

TypeError: message.guild.fetchMember is not a function
0|index  |     at Client.client.on (/home/pi/discordbot/index.js:52:31)
0|index  |     at Client.emit (events.js:193:13)
0|index  |     at MessageReactionAdd.handle (/home/pi/node_modules/discord.js/src/client/actions/MessageReactionAdd.js:46:17)
0|index  |     at Object.module.exports [as MESSAGE_REACTION_ADD] (/home/pi/node_modules/discord.js/src/client/websocket/handlers/MESSAGE_REACTION_ADD.js:4:37)
0|index  |     at WebSocketManager.handlePacket (/home/pi/node_modules/discord.js/src/client/websocket/WebSocketManager.js:384:31)
0|index  |     at WebSocketShard.onPacket (/home/pi/node_modules/discord.js/src/client/websocket/WebSocketShard.js:444:22)
0|index  |     at WebSocketShard.onMessage (/home/pi/node_modules/discord.js/src/client/websocket/WebSocketShard.js:301:10)
0|index  |     at WebSocket.onMessage (/home/pi/node_modules/discord.js/node_modules/ws/lib/event-target.js:125:16)
0|index  |     at WebSocket.emit (events.js:193:13)
0|index  |     at Receiver.receiverOnMessage (/home/pi/node_modules/discord.js/node_modules/ws/lib/websocket.js:797:20)

现在我记得：我做了“sudo apt-get update”和“sudo apt-get upgrade”，所以它可能将node.js的版本升级到v12。我不记得我有哪个版本（可能我在 2019 年初/年中安装了 node.js）。我尝试安装 v11，但出现同样的问题。有谁知道这行代码在哪个版本中有效？

PS：也message.member.roles.find给了我这个错误：message.member.roles.find is not a function，但我用谷歌搜索并找到了解决方案。我将该行更改为message.member.roles.cache.some.

提前致谢。

Answer 1

由于您使用的是 Discord JS v12，Guild.fetchMember因此已更改为Guild.members.fetch.

message.guild.members.fetch(user.id)