/**
 * Custom hook to track raised hands and show badge.
 * Unlike chat messages which only increase, raised hands can go up and down.
 * This hook tracks which specific users have raised their hands to properly
 * detect new raised hands even when others lower theirs.
 *
 * @param isHandRaiseTabOpen - Whether the hand raise tab is currently open
 * @returns Object containing raised hands count, badge value, and visibility flag
 */
export declare const useRaisedHandsBadge: (isHandRaiseTabOpen: boolean) => {
    raisedHandsCount: number;
    newRaisedHandsCount: number;
    hasNewRaisedHands: boolean;
    badgeValue: number;
    showBadge: boolean | undefined;
};
