index.js 1.6 KB

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  1. "use strict";
  2. var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default;
  3. Object.defineProperty(exports, "__esModule", {
  4. value: true
  5. });
  6. exports.default = setMonth;
  7. var _index = _interopRequireDefault(require("../_lib/toInteger/index.js"));
  8. var _index2 = _interopRequireDefault(require("../toDate/index.js"));
  9. var _index3 = _interopRequireDefault(require("../getDaysInMonth/index.js"));
  10. var _index4 = _interopRequireDefault(require("../_lib/requiredArgs/index.js"));
  11. /**
  12. * @name setMonth
  13. * @category Month Helpers
  14. * @summary Set the month to the given date.
  15. *
  16. * @description
  17. * Set the month to the given date.
  18. *
  19. * @param {Date|Number} date - the date to be changed
  20. * @param {Number} month - the month of the new date
  21. * @returns {Date} the new date with the month set
  22. * @throws {TypeError} 2 arguments required
  23. *
  24. * @example
  25. * // Set February to 1 September 2014:
  26. * const result = setMonth(new Date(2014, 8, 1), 1)
  27. * //=> Sat Feb 01 2014 00:00:00
  28. */
  29. function setMonth(dirtyDate, dirtyMonth) {
  30. (0, _index4.default)(2, arguments);
  31. var date = (0, _index2.default)(dirtyDate);
  32. var month = (0, _index.default)(dirtyMonth);
  33. var year = date.getFullYear();
  34. var day = date.getDate();
  35. var dateWithDesiredMonth = new Date(0);
  36. dateWithDesiredMonth.setFullYear(year, month, 15);
  37. dateWithDesiredMonth.setHours(0, 0, 0, 0);
  38. var daysInMonth = (0, _index3.default)(dateWithDesiredMonth);
  39. // Set the last day of the new month
  40. // if the original date was the last day of the longer month
  41. date.setMonth(month, Math.min(day, daysInMonth));
  42. return date;
  43. }
  44. module.exports = exports.default;