/**
 * Models an auditable persistable domain object.
 * @property {Date} createdAt - the date and time when the entity was created.
 * @property {string} createdBy - the user who created the entity.
 * @property {Date} updatedAt - the date and time when the entity was last updated.
 * @property {string} updatedBy - the user who last updated the entity.
 * @property {number} version - the version of the entity.
 */
export interface Auditable {
    createdAt?: Date;
    createdBy?: string;
    updatedAt?: Date;
    updatedBy?: string;
    version?: number;
}
/**
 * Utility class designed to ease the definition of {@link Auditable} persistable domain objects.
 */
export declare abstract class AuditableClass implements Auditable {
    readonly createdAt?: Date;
    readonly createdBy?: string;
    readonly updatedAt?: Date;
    readonly updatedBy?: string;
    readonly version?: number;
    /**
     * Creates an auditable persistable domain object instance.
     * @param {Auditable} entity the entity to create the auditable persistable domain object from.
     */
    constructor(entity: Auditable);
}
/**
 * Determines whether a given domain object is {@link Auditable}.
 *
 * @param {any} entity the entity to evaluate.
 * @returns {boolean} `true` if the given entity is auditable, `false` otherwise.
 */
export declare const isAuditable: (entity: any) => entity is Auditable;