/**
 * Triggers a file download from a given object URL, handling browser-specific behaviors.
 * Creates a hidden anchor element to initiate the download, sets the filename if supported,
 * and performs cleanup by removing the anchor and revoking the object URL.
 *
 * @param objectUrl - The object URL (e.g., created from a Blob) to download.
 * @param filename - The desired filename for the downloaded file.
 * @remarks
 * - In Firefox and Safari, the filename may not be set due to Content-Security-Policy restrictions.
 * - The object URL is revoked after a 2-second delay to avoid premature revocation issues.
 * @internal
 */
export declare function downloadFromUrl(objectUrl: string, filename: string): void;
/**
 * Downloads the given blob using an object url using a temporary anchor element.
 *
 * @param blob - The blob to download
 * @param filename - The filename to use, for the downloaded blob. Note however, for
 * Firefox the given filename will be ignored and a random filename will be used. It
 * will have the correct extension however as per blob type e.g. 'csv'.
 * @internal
 */
export declare function downloadBlob(blob: Blob, filename: string): void;
/**
 * Downloads raw string data into CSV file
 *
 * @param csvString - separated with comma string to parse to a csv file
 * @param fileName - name for the created file
 * @internal
 */
export declare function downloadCSV(csvString: string, fileName: string): void;
/**
 * Escapes a value for CSV. Arrays will be stringified before escaping.
 * If the value contains double quotes, these are escaped by doubling them.
 * If the value contains CSV injection characters, these are escaped by prefixing the value with a single quote.
 * If the value contains special characters, these are escaped by enclosing the entire string in double quotes.
 *
 * @param original - original cell value
 *
 * @returns The escaped value. If the value is undefined or null, an empty string is returned.
 * @internal
 */
export declare function escapeForCSV(original: unknown): string;