import type { Broadcastable } from './Broadcastable.js';
export interface SocketLikeServer {
    to(room: string): {
        emit(eventName: string, payload: unknown): void;
    };
    emit(eventName: string, payload: unknown): void;
    except(room: string): {
        emit(eventName: string, payload: unknown): void;
    };
    use(mw: (socket: unknown, next: (err?: Error) => void) => void): void;
}
export type AuthCallback = (socket: unknown, channel: string) => boolean | Promise<boolean>;
export interface BroadcastTarget {
    emit(eventName: string, payload: unknown): void;
}
/**
 * Bridges {@link EventDispatcher} → Socket.io server.
 */
export declare class SocketBroadcaster {
    private readonly io;
    private readonly authCallbacks;
    constructor(io: SocketLikeServer);
    /**
     * Broadcast an event.
     */
    broadcast(event: Broadcastable & object): Promise<void>;
    broadcastToAll(eventName: string, payload: Record<string, unknown>): void;
    broadcastExcept(socketId: string, eventName: string, payload: unknown): void;
    toChannel(channel: string): BroadcastTarget;
    /**
     * Register a channel authorization callback (private/presence).
     */
    authorize(channelName: string, authCallback: AuthCallback): this;
    /**
     * @internal
     */
    _getAuthCallbacks(): Map<string, AuthCallback>;
    private normalizeRoom;
}
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