Discord.js - 无法读取 execute() 方法中未定义的属性

Posted 2023-03-07

【中文标题】Discord.js - 无法读取 execute() 方法中未定义的属性

【英文标题】：Discord.js - Cannot read property of undefined inside execute() method

【发布时间】：2021-04-20 17:22:11

【问题描述】：

我正在制作一个简单的狙击命令，用于查看最后删除的消息。问题是我在使用命令时收到以下错误：

"TypeError: Cannot read property 'get' of undefined"

命令代码：

const Discord = require('discord.js');

module.exports = 
    name: 'snipe',
    description: 'snipes the deleted message/image',
    execute(client, message) 
        const msg = client.snipes.get(message.channel.id)
        if(!msg) return message.channel.send("Didn't find any deleted messages.")
        const embed = new Discord.MessageEmbed()
        .setAuthor(msg.author, msg.member.user.displayAvaterURL())
        .setDescription(msg.content)
        .setTimestamp()
        if(msg.image)embed.setImage(msg.image)
        message.channel.send(embed)
    

消息删除事件在我的主机器人文件中，如下所示：

client.snipes = new Map()
client.on('messageDelete', function(message, channel)
    client.snipes.set(message.channel.id, 
        content: message.content,
        author: message.author.tag,
        image:message.attachments.first() ? message.attachments.first().proxyURL : null
    )
)

我使用以下方式传递“消息”：

client.on('message', message => 
    if (!message.content.startsWith(prefix) || message.author.bot) return;
    
    const args = message.content.slice(prefix.length).trim().split(/ +/);
    const commandName = args.shift().toLowerCase(); 

    const command = client.commands.get(commandName)
        || client.commands.find(cmd => cmd.aliases && cmd.aliases.includes(commandName));

    if (!command) return;

    if (command.guildOnly && message.channel.type === 'dm') 
        return message.reply('I can\'t execute that command inside DMs!');
    

    if (command.args && !args.length) 
        let reply = `$message.author, wrong usage`;

        if (command.usage) 
            reply += `\nThe proper usage would be: \`$prefix$command.name $command.usage\``;
        

        return message.channel.send(reply);
    

    try 
        command.execute(message, args, client);
     catch (error) 
        console.error(error);
        message.reply('there was an error trying to execute that command!');
    
);

而“客户”是：

const client = new Discord.Client();

【参考方案1】：

确保两个文件中的参数顺序相同。如果您像command.execute(message, args, client) 一样传递它们，则该方法应使用相同的顺序：execute(message, args, client) ...。

try 
    command.execute(message, args, client);
 catch (error) 
    ...

module.exports = 
    name: 'snipe',
    description: 'snipes the deleted message/image',
    execute(message, args, client) 
        ...