/**
 * Create a broadcast helper bound to a Bun Server instance.
 *
 * @example
 * ```ts
 * import { broadcast } from '#services'
 *
 * // From a controller
 * broadcast.to('chat', 'general').emit('message', { text: 'Hello everyone' })
 *
 * // From a queue job
 * broadcast.to('notifications', userId).emit('new-order', { orderId: 123 })
 * ```
 */
export declare function createBroadcast(getServer: () => any): {
    to(channel: string, room: string): BroadcastTarget;
};
export type Broadcast = ReturnType<typeof createBroadcast>;
declare class BroadcastTarget {
    private getServer;
    private channel;
    private room;
    private topic;
    constructor(getServer: () => any, channel: string, room: string);
    /** Emit an event to all sockets in the room */
    emit(event: string, data?: unknown): void;
}
export {};