/**
 * Format bytes as human-readable text.
 * NOTE: Kudos to https://stackoverflow.com/users/65387/mpen for providing this function
 *
 * @param bytes Size in bytes
 * @param si Switch between metric (SI) units (powers of 1000) or binary (IEC) units (powers of 1024)
 * @param dp Number of decimal places to display.
 *
 * @return Formatted string.
 */
export declare function formatFileSize(bytes: number, dp?: number, si?: boolean): string;