/**
 * Converts a file size in bytes to a more human readable format.
 * (Source: https://stackoverflow.com/questions/15900485/correct-way-to-convert-size-in-bytes-to-kb-mb-gb-in-javascript)
 * @param bytes
 * @param decimals The decimals after the .
 */
export declare function formatBytes(bytes: number, decimals?: number): string;