import type { ConnectionManager } from './connection-manager.js';
import type { WSComponentDependencies, EventHandlerOptions, MessageFilter } from './types.js';
export declare class EventHandler {
    private logger;
    private subscriptions;
    private connectionSubscriptions;
    private options;
    constructor({ logger }: WSComponentDependencies, options?: EventHandlerOptions);
    subscribe(connectionId: string, topic: string, filters?: Record<string, unknown>): Promise<boolean>;
    unsubscribe(connectionId: string, topic: string): boolean;
    removeAllSubscriptions(connectionId: string): void;
    broadcastToTopic(topic: string, data: unknown, connectionManager: ConnectionManager, filter?: MessageFilter): Promise<number>;
    broadcastToUser(userId: string, topic: string, data: unknown, connectionManager: ConnectionManager): Promise<number>;
    broadcastToSession(sessionId: string, topic: string, data: unknown, connectionManager: ConnectionManager): Promise<number>;
    getConnectionSubscriptions(connectionId: string): string[];
    getTopicSubscribers(topic: string): string[];
    getSubscriptionStats(): {
        totalTopics: number;
        totalSubscriptions: number;
        connectionsWithSubscriptions: number;
        topicsBySubscriberCount: Array<{
            topic: string;
            subscriberCount: number;
        }>;
    };
    private createFilterFunction;
    cleanup(): void;
}
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