import { AxiosInstance, AxiosError } from "axios";
import { ClientConfig } from "./base.types";
export declare abstract class BaseService {
    protected readonly clientConfig: ClientConfig;
    protected readonly client?: AxiosInstance;
    constructor(clientConfig: ClientConfig);
    /**
     * Validates and transforms a plain object against a DTO class.
     *
     * @param DTOType The DTO class to validate against.
     * @param data The plain object data to validate.
     * @returns A promise that resolves with the validated and transformed DTO instance.
     * @throws {BadRequestException} If validation fails, throws an exception with structured error messages.
     */
    protected validateData(DTOType: new () => any, requestData: Record<string, any>): Promise<Record<string, any>>;
    /**
     * Centralized error handler for API requests
     * @protected
     * @param error - The error object from axios
     */
    protected handleError(error: AxiosError): never;
    /**
     * Make a GET request to the API
     * @protected
     * @param endpoint - API endpoint
     * @param params - Query parameters
     * @returns Promise with the response data
     */
    protected get(endpoint: string, params?: Record<string, any>): Promise<any>;
    /**
     * Make a POST request to the API
     * @protected
     * @param endpoint - API endpoint
     * @param data - Request body
     * @returns Promise with the response data
     */
    protected post(endpoint: string, data: Record<string, any>): Promise<any>;
    /**
     * Make a PUT request to the API
     * @protected
     * @param endpoint - API endpoint
     * @param data - Request body
     * @returns Promise with the response data
     */
    protected put(endpoint: string, data: Record<string, any>): Promise<any>;
    /**
     * Make a DELETE request to the API
     * @protected
     * @param endpoint - API endpoint
     * @returns Promise with the response data
     */
    protected delete(endpoint: string): Promise<any>;
}