import { MessagePayload } from "./Constants";
export declare class FirstResponseLatencyTracker {
    private isABotConversation;
    private isTracking;
    private startTrackingMessage?;
    private stopTrackingMessage?;
    private isReady;
    private trackingTimeoutId?;
    constructor();
    private createTrackingMessage;
    private startTracking;
    private handleAgentMessage;
    private stopTracking;
    private isMessageFromValidSender;
    startClock(payload: MessagePayload): void;
    stopClock(payload: MessagePayload): void;
    private offlineNetworkListener;
    private fmltrackingListener;
    private rehydrateListener;
    private historyListener;
    private deregister;
}