import { Session } from '../model/session';
import { EventPayload } from '../model/eventPayload';
export declare const sessionProperties: (session: Session, lastEvent: EventPayload) => {
    $session_start: string;
    $session_end: string;
    $session_duration_seconds: number;
    $event_count: number;
    $pageview_count: number;
    $is_bounce: boolean;
    $end_event: string;
    $end_location: string | number | boolean | import("../model/nestedObject").NestedObject | (string | number | boolean)[];
    $end_path: string | number | boolean | import("../model/nestedObject").NestedObject | (string | number | boolean)[];
};
export declare const initialSessionProperties: (firstEvent: EventPayload) => Record<string, any>;