/**
 * Enables cross-tab/window communication between same-origin contexts using the Broadcast Channel API.
 *
 * @param channelName The name of the broadcast channel.
 * @returns An object containing the received data and a function to post messages.
 */
export declare const useBroadcastChannel: <T = any>(channelName: string) => {
    data: T | null;
    postMessage: (message: T) => void;
};