"Humanization" functions.

humanizeBytes.ts

export function humanizeBytes(bytes: number): string {
  if (bytes < 1000) return bytes + ' B';

  const kb = bytes / 1000;
  if (kb < 1000) return kb.toFixed(2) + ' KB';

  const mb = kb / 1000;
  if (mb < 1000) return mb.toFixed(2) + ' MB';

  const gb = mb / 1000;
  return gb.toFixed(2) + ' GB';
}

humanizeDuration.ts

const durationUnits = {
  d: 24 * 60 * 60_000,
  h: 60 * 60_000,
  min: 60_000,
  s: 1_000,
  ms: 1
};

export function humanizeDuration(totalMs: number): string {
  let result = '';
  for (const unitName of keys(durationUnits)) {
    const unitMs = durationUnits[unitName];
    const wholeUnits = Math.floor(totalMs / unitMs);
    if (wholeUnits !== 0) {
      result += wholeUnits + unitName + ' ';
      totalMs -= wholeUnits * unitMs;
    }
  }
  return result ? result.trim() : '0ms';
}