Function padNumber

packages/common/src/i18n/format_date.ts:284–308

(
  num: number,
  digits: number,
  minusSign = '-',
  trim?: boolean,
  negWrap?: boolean,
)

}

function padNumber(
  num: number,
  digits: number,
  minusSign = '-',
  trim?: boolean,
  negWrap?: boolean,
): string {
  let neg = '';
  if (num < 0 || (negWrap && num <= 0)) {
    if (negWrap) {
      num = -num + 1;
    } else {
      num = -num;
      neg = minusSign;
    }
  }
  let strNum = String(num);
  while (strNum.length < digits) {
    strNum = '0' + strNum;
  }
  if (trim) {
    strNum = strNum.slice(strNum.length - digits);
  }
  return neg + strNum;
}

function formatFractionalSeconds(milliseconds: number, digits: number): string {
  const strMs = padNumber(milliseconds, 3);