import { Participant, Participants } from './participant-models';
/**
 * Validate the fields of a Participant.
 *
 * @param participant - The Participant to validate.
 */
export declare const participantValidator: (participant: Participant) => void;
/**
 * Validate the fields of a participants list.
 *
 * @param participants - The Participants to validate.
 */
export declare const participantsValidator: (participants: Participants) => void;
/**
 * Validate the photo of a Participant.
 *
 * @param participant - The Participant to validate.
 */
export declare const participantPhotoValidator: (participant: Participant) => void;
/**
 * Validate the photo of a participants list.
 *
 * @param participants - The Participants to validate.
 */
export declare const participantsPhotoValidator: (participants: Participants) => void;