/**
 * Estimates the current authoritative server tick from the last tick received
 * (sync packets, move acknowledgements) and the time elapsed since.
 */
export declare class ServerTickEstimator {
    private latestServerTick?;
    private latestServerTickAt;
    update(serverTick: number | undefined, now?: number): void;
    estimate(tickDurationMs: number, now?: number): number | undefined;
}