function formatBytes(bytes, decimals = 2) {

    if (bytes === 0) return '0 Bytes';

 

    const k = 1024;

    const dm = decimals < 0 ? 0 : decimals;

    const sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];

 

    const i = Math.floor(Math.log(bytes) / Math.log(k));

 

    return parseFloat((bytes / Math.pow(k, i)).toFixed(dm)) + ' ' + sizes[i];

}