// Human-readable byte sizes for maintenance summaries ("2.4 GB reclaimable").
//
// Promoted out of the cleanup cards, which had grown byte-identical private
// copies (VideoDedupCard, GatedPurgeCard) and were about to grow a third for
// the attachment reclaim. Binary units (1 KB = 1024 B) — these numbers come
// from st_size / SUM(size_bytes), so they describe disk, not marketing.
//
// NOT the same shape as the `formatBytes` helpers in SystemStatsCards,
// BackupRunsTable and PostCard — those differ in units, precision and
// zero-handling. Left alone deliberately rather than force-fitted here.
export function humanBytes (n) {
  const b = Number(n || 0)
  if (b >= 1 << 30) return (b / (1 << 30)).toFixed(1) + ' GB'
  if (b >= 1 << 20) return (b / (1 << 20)).toFixed(1) + ' MB'
  if (b >= 1 << 10) return (b / (1 << 10)).toFixed(1) + ' KB'
  return b + ' B'
}