/**
 * HTTP utility functions using fetch API
 */
export interface HttpRequestConfig {
    headers?: Record<string, string>;
    timeout?: number;
    method?: "GET" | "POST" | "PUT" | "DELETE";
}
export declare class HttpError extends Error {
    status: number;
    response?: Response | undefined;
    constructor(message: string, status: number, response?: Response | undefined);
}
export declare class HttpClient {
    private defaultHeaders;
    constructor(defaultHeaders?: Record<string, string>);
    private makeRequest;
    get<T>(url: string, config?: HttpRequestConfig): Promise<T>;
    post<T>(url: string, data?: unknown, config?: HttpRequestConfig): Promise<T>;
    put<T>(url: string, data?: unknown, config?: HttpRequestConfig): Promise<T>;
    delete<T>(url: string, config?: HttpRequestConfig): Promise<T>;
}