v3/packages/misc-utils/guildListing.ts

import { sortBy } from '@roleypoly/misc-utils/sortBy';
import { GuildSlug } from '@roleypoly/types';

type RecentAndSortedT = {
    recentGuildSlugs: GuildSlug[];
    sortedGuildSlugs: GuildSlug[];
};

export const getRecentAndSortedGuilds = (
    guilds: GuildSlug[],
    recentGuilds: string[]
): RecentAndSortedT => {
    return {
        recentGuildSlugs: recentGuilds.reduce<GuildSlug[]>((acc, id) => {
            const guild = guilds.find((guild) => guild.id === id);
            if (guild) {
                acc.push(guild);
            }

            return acc;
        }, []),
        sortedGuildSlugs: sortBy(guilds, 'name', (a: string, b: string) =>
            a.toLowerCase() > b.toLowerCase() ? 1 : -1
        ),
    };
};