Function date

builds/spacetime.cjs:2963–2987

(s, n, goFwd)

  };

  const date = function (s, n, goFwd) {
    n = validate(n);
    //avoid setting february 31st
    if (n > 28) {
      const month = s.month();
      let max = monthLengths[month];
      // support leap day in february
      if (month === 1 && n === 29 && isLeapYear(s.year())) {
        max = 29;
      }
      if (n > max) {
        n = max;
      }
    }
    //avoid setting < 0
    if (n <= 0) {
      n = 1;
    }
    const old = s.clone();
    walkTo(s, {
      date: n
    });
    s = fwdBkwd(s, old, goFwd, 'month'); // specify direction
    return s.epoch
  };

  const month = function (s, n, goFwd) {
    if (typeof n === 'string') {