index.js 1.1 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 = getISODay;
  7. var _index = _interopRequireDefault(require("../toDate/index.js"));
  8. var _index2 = _interopRequireDefault(require("../_lib/requiredArgs/index.js"));
  9. /**
  10. * @name getISODay
  11. * @category Weekday Helpers
  12. * @summary Get the day of the ISO week of the given date.
  13. *
  14. * @description
  15. * Get the day of the ISO week of the given date,
  16. * which is 7 for Sunday, 1 for Monday etc.
  17. *
  18. * ISO week-numbering year: http://en.wikipedia.org/wiki/ISO_week_date
  19. *
  20. * @param {Date|Number} date - the given date
  21. * @returns {Number} the day of ISO week
  22. * @throws {TypeError} 1 argument required
  23. *
  24. * @example
  25. * // Which day of the ISO week is 26 February 2012?
  26. * const result = getISODay(new Date(2012, 1, 26))
  27. * //=> 7
  28. */
  29. function getISODay(dirtyDate) {
  30. (0, _index2.default)(1, arguments);
  31. var date = (0, _index.default)(dirtyDate);
  32. var day = date.getDay();
  33. if (day === 0) {
  34. day = 7;
  35. }
  36. return day;
  37. }
  38. module.exports = exports.default;