/**
 * Posts data to a specified URL endpoint using fetch API
 * @param {Object} params - The parameters for the POST request
 * @param {string} params.url - The URL to send the POST request to
 * @param {Record<string, unknown>} [params.data] - Optional data to be sent in the request body
 * @returns {Promise<any>} The parsed JSON response from the server
 * @throws {Error} If the response is not ok, throws an error with the status message or error details
 */
export declare const postData: ({ url, data, }: {
    url: string;
    data?: Record<string, unknown>;
}) => Promise<any>;
/**
 * Represents progress information for file operations
 */
export type ProgressInfo = {
    loaded: number;
    total: number;
    ratio: number;
};
/**
 * Downloads a file from a specified URL using XMLHttpRequest
 * @param {string} url - The URL to download the file from
 * @param {Object} [opts] - Optional configuration for the download
 * @param {string} [opts.method='GET'] - The HTTP method to use
 * @param {Record<string, string>} [opts.headers] - Additional headers to include in the request
 * @param {(info: ProgressInfo) => void} [opts.onProgress] - Callback function to track download progress
 * @returns {Promise<Uint8Array>} The downloaded file as a Uint8Array
 * @throws {Object} Throws an object containing status and error message if download fails
 */
export declare function downloadFile(url: string, opts?: {
    method?: string;
    headers?: Record<string, string>;
    onProgress?: (info: ProgressInfo) => void;
}): Promise<Uint8Array>;
/**
 * Uploads a file to a specified URL using XMLHttpRequest
 * @param {string} url - The URL to upload the file to
 * @param {File | Blob | FormData} content - The content to upload
 * @param {Object} [opts] - Optional configuration for the upload
 * @param {string} [opts.method='POST'] - The HTTP method to use
 * @param {Record<string, string>} [opts.headers] - Additional headers to include in the request
 * @param {(info: ProgressInfo) => void} [opts.onProgress] - Callback function to track upload progress
 * @returns {Promise<Response>} The server response
 * @throws {Object} Throws an object containing status and error message if upload fails
 */
export declare function uploadFile(url: string, content: File | Blob | FormData, opts?: {
    method?: string;
    headers?: Record<string, string>;
    onProgress?: (info: ProgressInfo) => void;
}): Promise<Response>;
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