export declare class StateSyncManager {
    private syncStatus;
    private callPresenceInterval?;
    private isSyncStateSuppress;
    private readonly handlePresenceStatusEvents;
    private updateLastActiveTimeIfEnabled;
    private readonly updateCallPresenceStatus;
    repeatUpdateCallPresenceStatus: () => void;
    private clearCallPresenceInterval;
    resetPresenceStatus: () => void;
    private readonly handlePreseceStateUpdate;
    static getCurrentPresenceStatus(): void;
    private readonly handleChannelStateChange;
    register(): () => void;
}
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