galactic-bot/structure/extensions/GuildMember.js

const { Structures } = require('discord.js');

const GuildMember = Structures.extend('GuildMember', (GuildMember) => {

    class ExtendedGuildMember extends GuildMember {

        constructor(...args) {

            super(...args);

            this._cached = Date.now();

        }

        async _getExpiration(type) {
            if(!type) return null;
            const { callbacks } = this.client.moderationManager;
            const filtered = callbacks.filter((e) => e.infraction.type === type
                && e.infraction.target === this.id);

            if(filtered.size > 0) return filtered.first();
            const result = await this.client.storageManager.mongodb.infractions.findOne(
                { duration: { $gt: 0 }, type, target: this.id },
                { sort: { timestamp: -1 } }// Finds latest mute.
            ).catch((error) => { //eslint-disable-line no-unused-vars
                return null; 
            });

            return result || null;
        }

        get admin() {
            return this.user.developer || this.hasPermission('ADMINISTRATOR') || this.hasPermission('MANAGE_GUILD');
        }

        get highestRoleColor() {
            const role = this.roles.cache.filter((role) => role.color !== 0).sort((a, b) => b.rawPosition - a.rawPosition).first();
            if(role) return role.color;
            return 0;
        }

        get timeSinceCached() {
            return Date.now()-this._cached;
        }

        get display() {
            return this.user.tag;
        }
        
        get mention() {
            return `<@${this.user.id}>`;
        }

        get developer() {
            return this.user.developer;
        }

    }

    return ExtendedGuildMember;

});

module.exports = GuildMember;