/**
 * "Who's Here" Utility
 *
 * Simplified helper for displaying online users.
 */
import type { UsePresenceReturn } from '../hooks/usePresence.svelte.js';
import type { User } from '../presence.svelte.js';
export interface WhoIsHereReturn {
    users: User[];
    avatars: Array<{
        user: User;
        color: string;
    }>;
    count: number;
    onlineCount: number;
    isAlone: boolean;
}
/**
 * Get information about who's online
 *
 * @param presence - The presence hook instance
 * @returns Who's here information
 *
 * @example
 * ```svelte
 * <script>
 *   const presence = usePresence(channel, currentUser);
 *   const whoIsHere = useWhoIsHere(presence);
 * </script>
 *
 * <div class="avatars">
 *   {#if whoIsHere.isAlone}
 *     <p>You're the only one here</p>
 *   {:else}
 *     <p>{whoIsHere.onlineCount} people online</p>
 *     {#each whoIsHere.avatars as { user, color }}
 *       <div class="avatar" style="background: {color}">
 *         {user.name[0]}
 *       </div>
 *     {/each}
 *   {/if}
 * </div>
 * ```
 */
export declare function useWhoIsHere(presence: UsePresenceReturn<any>): WhoIsHereReturn;