detect users joining/leaving voice channels

events/voiceStateUpdate.js

@@ -0,0 +1,16 @@
+import { Events } from 'discord.js';
+
+export const name = Events.VoiceStateUpdate;
+export async function execute(oldState, newState) {
+	console.debug('[DEBUG] Voice State Update');
+
+	const change = (!!oldState.channel) ^ (!!newState.channel);
+	if (!change) return;
+
+	const guild = newState.guild.name;
+	const member = newState.member.user.username;
+	const state = newState.channel ? 'joined' : 'left';
+	const channel = (oldState.channel ?? newState.channel).name;
+
+	console.debug(`[DEBUG] User '${member}' ${state} channel '${channel}' in guild '${guild}'.`);
+}

index.js

@@ -18,6 +18,7 @@ const runClient = (commands, events) => {
 		intents: [
 			GatewayIntentBits.Guilds,
 			GatewayIntentBits.GuildMessages,
+			GatewayIntentBits.GuildVoiceStates,
 			GatewayIntentBits.GuildMessageReactions
 		],
 		partials: [Partials.Message, Partials.Reaction]