import { BaseServiceGETRequest } from "../../@types/base";
/**
 * BaseService class to handle common HTTP requests to the GeoNet API.
 * @abstract
 * @since 1.0.0
 */
export declare abstract class BaseService {
    protected readonly baseURL = "https://api.geonet.org.nz";
    /**
     * Performs a GET request to the specified endpoint.
     *
     * @param {BaseServiceGETRequest} req - The request object containing the endpoint and format.
     * @returns {Promise<any>} - A promise that resolves to the response data.
     * @throws {Error} - Throws an error if the endpoint is not provided, is not a string, or does not start with a backslash (/).
     * @since 1.0.0
     */
    protected GET(req: BaseServiceGETRequest): Promise<any>;
}