utils.js 1.5 KB

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  1. import * as C from './constant';
  2. var padStart = function padStart(string, length, pad) {
  3. var s = String(string);
  4. if (!s || s.length >= length) return string;
  5. return "" + Array(length + 1 - s.length).join(pad) + string;
  6. };
  7. var padZoneStr = function padZoneStr(instance) {
  8. var negMinuts = -instance.utcOffset();
  9. var minutes = Math.abs(negMinuts);
  10. var hourOffset = Math.floor(minutes / 60);
  11. var minuteOffset = minutes % 60;
  12. return "" + (negMinuts <= 0 ? '+' : '-') + padStart(hourOffset, 2, '0') + ":" + padStart(minuteOffset, 2, '0');
  13. };
  14. var monthDiff = function monthDiff(a, b) {
  15. // function from moment.js in order to keep the same result
  16. var wholeMonthDiff = (b.year() - a.year()) * 12 + (b.month() - a.month());
  17. var anchor = a.clone().add(wholeMonthDiff, C.M);
  18. var c = b - anchor < 0;
  19. var anchor2 = a.clone().add(wholeMonthDiff + (c ? -1 : 1), C.M);
  20. return Number(-(wholeMonthDiff + (b - anchor) / (c ? anchor - anchor2 : anchor2 - anchor)) || 0);
  21. };
  22. var absFloor = function absFloor(n) {
  23. return n < 0 ? Math.ceil(n) || 0 : Math.floor(n);
  24. };
  25. var prettyUnit = function prettyUnit(u) {
  26. var special = {
  27. M: C.M,
  28. y: C.Y,
  29. w: C.W,
  30. d: C.D,
  31. D: C.DATE,
  32. h: C.H,
  33. m: C.MIN,
  34. s: C.S,
  35. ms: C.MS,
  36. Q: C.Q
  37. };
  38. return special[u] || String(u || '').toLowerCase().replace(/s$/, '');
  39. };
  40. var isUndefined = function isUndefined(s) {
  41. return s === undefined;
  42. };
  43. export default {
  44. s: padStart,
  45. z: padZoneStr,
  46. m: monthDiff,
  47. a: absFloor,
  48. p: prettyUnit,
  49. u: isUndefined
  50. };