export interface SseClient {
    id: number;
    send: (data: SseEvent) => void;
}
export interface SseEvent {
    type: string;
    data?: unknown;
    message?: string;
}
export declare class SseService {
    private clients;
    addClient(client: SseClient): void;
    removeClient(clientId: number): void;
    notifyClients(event: SseEvent): void;
    getClientCount(): number;
}
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