export interface HttpResponse<T> {
    data: null | T;
    error: null | string;
    status: number;
}
/**
 * Fetches data from a URL with configurable HTTP method, body, headers, and options.
 * @param url - The URL to fetch from
 * @param method - The HTTP method to use (DELETE, GET, POST, PUT). Defaults to GET.
 * @param body - Optional request body data
 * @param headers - Optional request headers
 * @param options - Optional fetch options (excluding body, headers, method)
 * @returns Promise resolving to HttpResponse containing data, error and status
 * @example
 * ```ts
 * // GET request
 * const response = await fetchData<User>('/api/users/123');
 *
 * // POST request with body
 * const response = await fetchData<User>(
 *   '/api/users',
 *   'POST',
 *   { name: 'John', email: 'john@example.com' }
 * );
 * ```
 */
export declare function fetchData<T>(url: string, method?: 'DELETE' | 'GET' | 'POST' | 'PUT', body?: unknown, headers?: Record<string, string>, options?: Omit<RequestInit, 'body' | 'headers' | 'method'>): Promise<HttpResponse<T>>;
/**
 * Sends a multipart form data request to a URL.
 * @param url - The URL to send the request to
 * @param formData - The FormData object containing the multipart form data
 * @returns Promise resolving to HttpResponse containing data, error and status
 * @example
 * ```ts
 * const formData = new FormData();
 * formData.append('file', fileBlob);
 * formData.append('name', 'profile.jpg');
 * const response = await multipartFetch('/api/upload', formData);
 * ```
 */
export declare function multipartFetch<T>(url: string, formData: FormData): Promise<HttpResponse<T>>;
/**
 * Uploads a file to a URL using multipart form data.
 * @param url - The URL to send the request to
 * @param file - The file to upload
 * @returns Promise resolving to HttpResponse containing data, error and status
 * @example
 * ```ts
 * const response = await uploadFile('/api/upload', file);
 * ```
 */
export declare function uploadFile<T>(url: string, file: File): Promise<HttpResponse<T>>;
/**
 * Fetches data from a URL using the SWR fetcher function.
 * @param url - The URL to fetch from
 * @returns Promise resolving to the fetched data
 * @example
 * ```ts
 * const data = await swrFetcher('/api/users/123');
 * ```
 */
export declare const swrFetcher: <T>(url: string) => Promise<T>;