import { Report } from '../models/report';
/**
 * This ReportService singleton lets the library interface with NeDB.
 */
export declare class ReportService {
    private static instance;
    private dbs;
    /**
     * Private constructor.
     * Follows the singleton design pattern
     * @private
     */
    private constructor();
    /**
     * Return the Singleton instance, and instantiates it if needed.
     * Follows the singleton design pattern
     * @return {ReportService}
     */
    static getInstance(): ReportService;
    /**
     * This method is reachable after getting the actual
     * instance of the service using the `getInstance()` method.
     * @see Report
     * @param {number} port
     * @return {Report}
     */
    getReport(port: number): Promise<Report>;
}