export declare class EventBroadcaster {
    private readonly maxReplayBytes;
    private readonly maxReplayEvents;
    private subscribers;
    private nextSubId;
    private eventCounter;
    private buffered;
    private bufferedBytes;
    constructor(maxReplayBytes?: number, maxReplayEvents?: number);
    get latestEventId(): number;
    subscribe(afterEventId?: number): {
        subscriberId: string;
        stream: ReadableStream<string>;
        latestEventId: number;
        replayGap: boolean;
    };
    broadcast(eventData: unknown): void;
    sendTo(subscriberId: string, eventData: unknown): void;
    unsubscribe(subscriberId: string): void;
    close(): void;
    get subscriberCount(): number;
    get replayBytes(): number;
    get replaySize(): number;
    get oldestEventId(): number | null;
    private removeSubscriber;
}