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  1. "use strict";
  2. Object.defineProperty(exports, "__esModule", {
  3. value: true
  4. });
  5. exports.default = addBusinessDays;
  6. var _index = _interopRequireDefault(require("../isWeekend/index.js"));
  7. var _index2 = _interopRequireDefault(require("../toDate/index.js"));
  8. var _index3 = _interopRequireDefault(require("../_lib/toInteger/index.js"));
  9. var _index4 = _interopRequireDefault(require("../_lib/requiredArgs/index.js"));
  10. function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
  11. /**
  12. * @name addBusinessDays
  13. * @category Day Helpers
  14. * @summary Add the specified number of business days (mon - fri) to the given date.
  15. *
  16. * @description
  17. * Add the specified number of business days (mon - fri) to the given date, ignoring weekends.
  18. *
  19. * @param {Date|Number} date - the date to be changed
  20. * @param {Number} amount - the amount of business days to be added. Positive decimals will be rounded using `Math.floor`, decimals less than zero will be rounded using `Math.ceil`.
  21. * @returns {Date} the new date with the business days added
  22. * @throws {TypeError} 2 arguments required
  23. *
  24. * @example
  25. * // Add 10 business days to 1 September 2014:
  26. * var result = addBusinessDays(new Date(2014, 8, 1), 10)
  27. * //=> Mon Sep 15 2014 00:00:00 (skipped weekend days)
  28. */
  29. function addBusinessDays(dirtyDate, dirtyAmount) {
  30. (0, _index4.default)(2, arguments);
  31. var date = (0, _index2.default)(dirtyDate);
  32. var amount = (0, _index3.default)(dirtyAmount);
  33. if (isNaN(amount)) return new Date(NaN);
  34. var hours = date.getHours();
  35. var sign = amount < 0 ? -1 : 1;
  36. var fullWeeks = (0, _index3.default)(amount / 5);
  37. date.setDate(date.getDate() + fullWeeks * 7); // Get remaining days not part of a full week
  38. var restDays = Math.abs(amount % 5); // Loops over remaining days
  39. while (restDays > 0) {
  40. date.setDate(date.getDate() + sign);
  41. if (!(0, _index.default)(date)) restDays -= 1;
  42. } // Restore hours to avoid DST lag
  43. date.setHours(hours);
  44. return date;
  45. }
  46. module.exports = exports.default;