How do I get the user count of a voice by channel id? Discordjs v.13

Question

How do I get the user count of a voice by channel id? I'm using Discordjs v.13.

Here's my current code:

async function usercount(channelId) {
  try {
    let voiceChannel = Client.guilds.cache
      .get('guildId')
      .channels.cache.get(channelId);
    let membersInChannel = voiceChannel.members.size;
    console.log(membersInChannel);
  } catch (error) {
    logger.error('Error while performing usercount');
    console.log(error);
  }
}

Answer 1

You can get the number of members by fetching the voice channel by its ID and grabbing its members property. You'll probably need to use the { force: true } option to skip the cache check and request the API. This way, when someone leaves/joins the channel, the number will still be accurate.

Notice that you will either need a guild ID or a guild to which the voice channel belongs.

async function userCount(guildId, channelId) {
  try {
    let guild = client.guilds.cache.get(guildId);
    let voiceChannel = await guild.channels.fetch(channelId, { force: true });

    return voiceChannel.members?.size;
  } catch (error) {
    logger.error('Error while performing usercount');
    console.log(error);
  }
}

And here is an example how to use this. Here, I'm passing down the message.guild.id as the guild ID, and the first argument as the channel ID.

const { Client, Intents } = require('discord.js');

const client = new Client({
  intents: [
    Intents.FLAGS.GUILDS,
    Intents.FLAGS.GUILD_MESSAGES,
    Intents.FLAGS.GUILD_VOICE_STATES,
  ],
});

client.on('messageCreate', async (message) => {
  if (message.author.bot) return;
  const args = message.content.slice(prefix.length).split(/ +/);
  const command = args.shift().toLowerCase();
  const channelId = args[0];

  message.reply(
    `There are ${await userCount(
      message.guild.id,
      channelId,
    )} members in the voice channel _"${
      message.guild.channels.cache.get(channelId).name
    }"_`,
  );
});

Important: Don't forget that you'll need to enable the GUILD_VOICE_STATES intents. Without that the number of connected members won't change.