我还没有更好地掌握Node.js，但是当我在修补我的Discord bot时，我似乎无法找到一种方法，不将它放入EventEmitter中就可以获得bot所在的频道列表。我很困惑为什么这不起作用，是不是我遗漏了什么？

代码：

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

//this works
client.on('ready', ()=> {
    const channelID = '803359668054786118';
    const channel = client.channels.cache.get(channelID);
    channel.send('working'); //this works
});

//this doesn't work
//intially tried using a wait function to see if the reason was because bot didn't have enough time to log on properly
setTimeout(function() {
    const channelID = '803359668054786118';
    const channel = client.channels.cache.get(channelID);
    console.log(client.channels); //this is telling me that there's no channels in the collection...
    //channel.send('working');
}, 500);