ReferenceError：discord.js 突击队中分配的左侧无效

Posted 2023-03-14

【中文标题】ReferenceError：discord.js 突击队中分配的左侧无效

【英文标题】：ReferenceError: Invalid left-hand side in assignment in discord.js commando

【发布时间】：2021-11-04 16:01:47

【问题描述】：

使用我从 repo 克隆的 WOK Thanks Command 代码，并进行了一些编辑，但是当我输入命令时，我从不和谐的 commando 中获得了 ReferenceError: Invalid left-hand side in assignment。

代码：

const Commando = require('discord.js-commando')
const Discord = require('discord.js')
const thanksSchema = require('@schemas/thanks-schema')

module.exports = class ThanksCommand extends Commando.Command 
    constructor(client) 
        super(client, 
            name: 'thanks',
            group: 'thanks',
            memberName: 'thanks',
            description: 'Thanks a staff member for their help',
        )
    

    async run(message) 
        const target = message.mentions.users.first()
        if (!target) 
            const noPingThanksEmbed = new Discord.MessageEmbed()
            .setTitle('ERROR: Invalid user provided')
            .setDescription('Please tag a valid user')
            .setColor('#ff0000')
            message.channel.send(noPingThanksEmbed)
            return
        

        const  guild  = message
        const guildId = guild.id
        const targetId = target.id
        const authorId = message.author.id
        const now = new Date()

        if (targetId === authorId) 
            const thankSelfEmbed = new Discord.MessageEmbed()
            .setTitle('ERROR: Invalid user provided')
            .setDescription('You cannot thank yourself')
            .setFooter('LOL YOU THOUGHT')
            .setColor('#ff0000')
            message.channel.send(thankSelfEmbed)
            return
        

        const authorData = await thanksSchema.findOne(
            userId: authorId,
            guildId,
        )

        if (authorData && authorData.lastGave) 
            const then = new Date(authorData.lastGave)

            const diff = now.getTime() = then.getTime()
            const diffHours = Math.round(diff / (1000 * 60 * 60))
            const hours = 24

            if (diffHours <= hours) 
                const cooldownThankEmbed = new Discord.MessageEmbed()
                .setTitle('ERROR: User on cooldown')
                .setDescription(`You have already thanked someone within the last $hours hours`)
                .setColor('#ff0000')
                message.channel.send(cooldownThankEmbed)
                return
            
        

        await thanksSchema.findOneAndUpdate(
            userId: authorId,
            guildId,
        , 
            userId: authorId,
            guildId,
            lastGave: now,
        , 
            upsert: true,
        )

        const result = await thanksSchema.findOneAndUpdate(
            userId: targetId,
            guildId,
        , 
            userId: targetId,
            guildId,
            $inc: 
                received: 1,
            
        , 
            upsert: true,
            new: true,
        )

        const amount = result.received

        const thanksEmbed = new Discord.MessageEmbed()
        .setTitle('SUCCESS')
        .setDescription(`<@$authorId> has thanked <@$targetId!\n\nThey now have $amount thanks`)
        .setColor('#1be730')
        message.channel.send(thanksEmbed)
    

这是架构：

const mongoose = require('mongoose')

const reqString = 
    type: String,
    required: true,


const thanksSchema = mongoose.Schema(
    userId: reqString,
    guildId: reqString,
    received: 
        type: Number,
        default: 0
    ,
    lastGave: Date
)

module.exports = mongoose.model('thanks', thanksSchema)

代码在控制台本身没有返回任何错误，只是不和谐，机器人继续运行，好像什么都没发生一样，但是命令不起作用，因为进程停止了。我没有发现运营商有任何明显的问题，这是我期望从这个错误中得到的......

【参考方案1】：

错误不是来自 Discord.JS 或 Commando，而是来自 run() 函数中的这一行

const diff = now.getTime() = then.getTime()

你是这个意思吗？

const diff = now.getTime() - then.getTime()

当抛出错误时，查找错误发出的文件路径和行

【讨论】：

Commando 我的意思是错误是在 Discord 本身中发送的，因此它没有给出文件路径和行。我想我打错了那行，所以谢谢你，那确实是错误。