Function splitTimestampParts

src/subtitles/standards.ts:111–127

(
  totalMs: number,
  normalizeMs: (value: number) => number,
)

};

const splitTimestampParts = (
  totalMs: number,
  normalizeMs: (value: number) => number,
): {
  hours: number;
  minutes: number;
  seconds: number;
  milliseconds: number;
} => {
  const safeMs = Math.max(0, normalizeMs(totalMs));
  return {
    hours: Math.floor(safeMs / 3_600_000),
    minutes: Math.floor((safeMs % 3_600_000) / 60_000),
    seconds: Math.floor((safeMs % 60_000) / 1000),
    milliseconds: safeMs % 1000,
  };
};

const formatAssTime = (totalMs: number): string => {
  const { hours, minutes, seconds, milliseconds } = splitTimestampParts(