code: function readablizeBytes(bytes) {
    const time = Date.now();
    if (bytes === 0) { return '0 bytes'; }
    const s = ['bytes', 'kB', 'MB', 'GB', 'TB', 'PB'];
    const e = Math.floor(Math.log(bytes) / Math.log(1024));
    const result = (bytes / Math.pow(1024, e)).toFixed(2) + ' ' + s[e];
    console.info('readablizeBytes', Date.now() - time);
    return result;
  }
docs: /* global localStorage