Custom Events not Creating Listeners

import { ApplyOptions } from '@sapphire/decorators';
import { container, Listener } from '@sapphire/framework';
import { type GuildMember } from 'discord.js';

const commandOptions = { event: 'guildMemberUpdate' };

@ApplyOptions<Listener.Options>(commandOptions)
export class ListenerExt extends Listener {
  public async run(oldGuildMember: GuildMember, newGuildMember: GuildMember) {
    // ! Subscriber events.
    // Check if the guild member is premium.
    const isPremium = newGuildMember.roles.cache.some((role) => role.tags?.premiumSubscriberRole);

    // Check if the guild member was premium.
    const wasPremium = oldGuildMember.roles.cache.some((role) => role.tags?.premiumSubscriberRole);

    // Check if the guild member's premiums status changed.
    if (isPremium && !wasPremium) {
      container.client.emit('guildMemberSubscribed', newGuildMember);
    } else if (!isPremium && wasPremium) {
      container.client.emit('guildMemberUnsubscribed', newGuildMember);
    }
  }
}

import { ApplyOptions } from '@sapphire/decorators';
import { Listener } from '@sapphire/framework';
import { type GuildMember } from 'discord.js';

const commandOptions = { event: 'guildMemberUnsubscribed' };

@ApplyOptions<Listener.Options>(commandOptions)
export class ListenerExt extends Listener {
  public async run(guildMember: GuildMember) {
    // Remove all perks from the guild member.
  }
}