|                                                          |  | import * as C from './constant';
var padStart = function padStart(string, length, pad) {  var s = String(string);  if (!s || s.length >= length) return string;  return "" + Array(length + 1 - s.length).join(pad) + string;};
var padZoneStr = function padZoneStr(instance) {  var negMinutes = -instance.utcOffset();  var minutes = Math.abs(negMinutes);  var hourOffset = Math.floor(minutes / 60);  var minuteOffset = minutes % 60;  return "" + (negMinutes <= 0 ? '+' : '-') + padStart(hourOffset, 2, '0') + ":" + padStart(minuteOffset, 2, '0');};
var monthDiff = function monthDiff(a, b) {  // function from moment.js in order to keep the same result
  if (a.date() < b.date()) return -monthDiff(b, a);  var wholeMonthDiff = (b.year() - a.year()) * 12 + (b.month() - a.month());  var anchor = a.clone().add(wholeMonthDiff, C.M);  var c = b - anchor < 0;  var anchor2 = a.clone().add(wholeMonthDiff + (c ? -1 : 1), C.M);  return +(-(wholeMonthDiff + (b - anchor) / (c ? anchor - anchor2 : anchor2 - anchor)) || 0);};
var absFloor = function absFloor(n) {  return n < 0 ? Math.ceil(n) || 0 : Math.floor(n);};
var prettyUnit = function prettyUnit(u) {  var special = {    M: C.M,    y: C.Y,    w: C.W,    d: C.D,    D: C.DATE,    h: C.H,    m: C.MIN,    s: C.S,    ms: C.MS,    Q: C.Q  };  return special[u] || String(u || '').toLowerCase().replace(/s$/, '');};
var isUndefined = function isUndefined(s) {  return s === undefined;};
export default {  s: padStart,  z: padZoneStr,  m: monthDiff,  a: absFloor,  p: prettyUnit,  u: isUndefined};
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