Function format

example/src/lib/formatTime.ts:1–13

(totalSeconds: number)

function format(totalSeconds: number): string {
  if (!Number.isFinite(totalSeconds) || totalSeconds < 0) {
    return '0:00';
  }
  const seconds = Math.floor(totalSeconds % 60);
  const minutes = Math.floor((totalSeconds / 60) % 60);
  const hours = Math.floor(totalSeconds / 3600);
  const pad = (n: number) => n.toString().padStart(2, '0');
  if (hours > 0) {
    return `${hours}:${pad(minutes)}:${pad(seconds)}`;
  }
  return `${minutes}:${pad(seconds)}`;
}

export function formatTime(seconds: number): string {
  return format(seconds);