import { AxiosRequestConfig } from 'axios';
import { ApiConfigKey } from '../../config/api.config';
export declare class ApiService {
    [x: string]: any;
    clearAuthHeader: any;
    setAuthHeader(): void;
    private static instance;
    private axiosInstances;
    private constructor();
    static getInstance(): ApiService;
    private setupInterceptors;
    private getTokenForApi;
    private handleUnauthorized;
    get<T>(url: string, apiKey?: ApiConfigKey, config?: AxiosRequestConfig): Promise<T>;
    post<T>(url: string, data?: any, apiKey?: ApiConfigKey, config?: AxiosRequestConfig): Promise<T>;
    put<T>(url: string, data?: any, apiKey?: ApiConfigKey, config?: AxiosRequestConfig): Promise<T>;
    delete<T>(url: string, apiKey?: ApiConfigKey, config?: AxiosRequestConfig): Promise<T>;
    patch<T>(url: string, data?: any, apiKey?: ApiConfigKey, config?: AxiosRequestConfig): Promise<T>;
    private handleError;
}