How to mute everyone in a voice channel using discord.js?

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const Discord = require('discord.js');
const client = new Discord.Client();

client.once('ready', () => {
    console.log('Bot is online!');
});

client.on('message', message => {
    if (message.content === '!muteall') {
        const channel = message.member.voice.channel;
        
        if (!channel) {
            return message.channel.send('You must be in a voice channel to use this command.');
        }

        for (const member of channel.members) {
            member[1].voice.setMute(true);
        }

        message.channel.send('Everyone in the voice channel has been muted.');
    }
});

client.login('YOUR_BOT_TOKEN');