/**
 * Matcher for first_session
 * @module
 */
import { ProfileAttributes } from '../../../models';
/**
 * Matcher for "first_session" condition.
 * @module
 */
declare const _default: {
    fieldsNeeded: string[];
    /**
     * If there are no events or if all events are in same session, return true.
     * @param {Object} value
     * @returns {boolean}
     */
    match: (attributes: ProfileAttributes) => boolean;
};
export default _default;