JavaScript开发Discord Bot：.completed命令遇command未定义错误求助

Hey there! Let's walk through fixing your .completed command—you've got a handful of small issues causing the ReferenceError and other potential bugs. Let's break them down one by one.

1. The command and prefix Undefined Error #

Your code checks if (command === ${prefix}completed) but neither command nor prefix are declared in this module. Since this is a command module exported with name: "completed", your main bot file should already be routing the .completed command to this function, so this check is unnecessary. If you still want to keep a prefix guard, define the prefix first and adjust the logic:

const prefix = ".";
// Optional: Add a command check if needed
const command = message.content.slice(prefix.length).split(' ')[0];
if (command !== "completed") return;

2. Outdated RichEmbed Syntax #

In Discord.js v12 and above, RichEmbed was renamed to MessageEmbed. Update that line to avoid compatibility issues:

var botEmbed = new discord.MessageEmbed()

3. Invalid Mention Access Methods #

message.mentions.users doesn't have .second(), .third(), etc. Use the array() method to get a list of mentioned users, then access them by index. Add fallbacks in case not enough users are mentioned:

const mentionedUsers = message.mentions.users.array();
// Use in fields like this:
.addField("Booster 1", mentionedUsers[0]?.tag || "No user mentioned")
.addField("Booster 2", mentionedUsers[1]?.tag || "No user mentioned")

4. displayAvatarURL is a Method #

You forgot to call the method—add parentheses to retrieve the actual avatar URL:

var userIcon = message.member.user.displayAvatarURL();

5. Incorrect addField Usage #

Each addField requires two arguments: the field name and value. Your current code only passes one, which will throw errors. Fix each field like this:

.addField("Pot of Gold", `${goldPot}k`)
.addField("Total Booster Cut", `${totBooCut.toFixed(2)}k`) // Use toFixed for clean decimal values

6. Broken Input Validation Logic #

The check if (!words.length > 7) is logically incorrect. Adjust it to ensure users provide the right number of arguments (assuming your expected format is .completed @booster1 @booster2 @booster3 @booster4 <gold> <location> @advertiser):

const words = message.content.slice(prefix.length).split(' ');
// Check for too few arguments
if (words.length < 8) {
  return message.channel.send(`You're missing arguments, ${message.author}! Use: \`${prefix}completed @booster1 @booster2 @booster3 @booster4 <gold amount> <location> @advertiser\``);
}
// Check for too many arguments
if (words.length > 8) {
  return message.channel.send(`Too many arguments, ${message.author}! Stick to the format above.`);
}

Full Fixed Code #

Here's the complete corrected code incorporating all these fixes:

const discord = require("discord.js");
const prefix = ".";

module.exports.run = async (bot, message, args) => {
  const mentionedUsers = message.mentions.users.array();
  const words = message.content.slice(prefix.length).split(' ');

  // Input validation
  if (words.length < 8) {
    return message.channel.send(`You're missing arguments, ${message.author}! Use the format: \`${prefix}completed @booster1 @booster2 @booster3 @booster4 <gold amount> <location> @advertiser\``);
  }
  if (words.length > 8) {
    return message.channel.send(`You provided too many arguments, ${message.author}! Stick to the format above.`);
  }

  // Extract and validate values
  const goldPot = words[5];
  const goldLocation = words[6];
  const goldPotInt = parseInt(goldPot);

  if (isNaN(goldPotInt)) {
    return message.channel.send(`Please enter a valid number for the gold pot, ${message.author}!`);
  }

  // Calculate cuts
  const boosterCut = goldPotInt * 0.178;
  const totBooCut = boosterCut * 4;
  const advertCut = goldPotInt * 0.173;
  const guildCut = goldPotInt * 0.115;

  // Build embed
  const userIcon = message.member.user.displayAvatarURL();
  const botEmbed = new discord.MessageEmbed()
    .setDescription("M+ Completed")
    .setColor("#8e12db")
    .setThumbnail(userIcon)
    .addField("Booster 1", mentionedUsers[0]?.tag || "Not specified")
    .addField("Booster 2", mentionedUsers[1]?.tag || "Not specified")
    .addField("Booster 3", mentionedUsers[2]?.tag || "Not specified")
    .addField("Booster 4", mentionedUsers[3]?.tag || "Not specified")
    .addField("Pot of Gold", `${goldPot}k`)
    .addField("Total Booster Cut", `${totBooCut.toFixed(2)}k`)
    .addField("Individual Booster Cut", `${boosterCut.toFixed(2)}k`)
    .addField("Advertiser Cut", `${advertCut.toFixed(2)}k`)
    .addField("Guild Cut", `${guildCut.toFixed(2)}k`)
    .addField("Location of Gold", goldLocation)
    .addField("Advertiser", mentionedUsers[4]?.tag || "Not specified");

  // Send embed (adjust for your Discord.js version)
  return message.channel.send({ embeds: [botEmbed] }); // For v13+; use message.channel.send(botEmbed) for v12
};

module.exports.help = {
  name: "completed"
};

Quick Version Note #

• If you're on Discord.js v12, remove the embeds array wrapper and send message.channel.send(botEmbed) directly.

内容的提问来源于stack exchange，提问作者Askelaboeska