/**
 * Selects the human collaborators shown as avatars in the editor header.
 *
 * Agents are deliberately excluded — an editing agent renders on the block it
 * holds, not in the roster.
 *
 */
import type { ActorPresence } from '@pantheon-systems/css-client';
export interface HeaderPresenceState {
    humans?: ActorPresence[];
}
export declare function selectHeaderCollaborators(presence: HeaderPresenceState | null | undefined, _hasActiveHumans: boolean, humanPresenceCount: number): ActorPresence[];