import { BroadcastMessage, MessageHandler } from '../../models/broadcast';
import { Subscription } from '../../models/common';
/**
 * A service that facilitates communication between different browser contexts
 * (such as tabs, windows, or iframes) of the same origin.
 * It uses the `BroadcastChannel` API to send and receive messages.
 */
export declare class BroadcastService {
    private readonly CHANNEL_NAME;
    private readonly MESSAGE_EVENT;
    private channel?;
    /**
     * Sends a message to all listening browser contexts on the same origin.
     * @param {BroadcastMessage} message The message to be sent.
     */
    sendMessage(message: BroadcastMessage): void;
    /**
     * Subscribes to incoming messages.
     * @param {MessageHandler} callback The function to be executed when a message is received.
     * @returns {Subscription} An unsubscribe function.
     */
    subscribeToMessages(callback: MessageHandler): Subscription;
    private getChannel;
}