index.js 1008 B

12345678910111213141516171819202122232425262728293031323334
  1. "use strict";
  2. var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default;
  3. Object.defineProperty(exports, "__esModule", {
  4. value: true
  5. });
  6. exports.default = getDecade;
  7. var _index = _interopRequireDefault(require("../toDate/index.js"));
  8. var _index2 = _interopRequireDefault(require("../_lib/requiredArgs/index.js"));
  9. /**
  10. * @name getDecade
  11. * @category Decade Helpers
  12. * @summary Get the decade of the given date.
  13. *
  14. * @description
  15. * Get the decade of the given date.
  16. *
  17. * @param {Date|Number} date - the given date
  18. * @returns {Number} the year of decade
  19. * @throws {TypeError} 1 argument required
  20. *
  21. * @example
  22. * // Which decade belongs 27 November 1942?
  23. * const result = getDecade(new Date(1942, 10, 27))
  24. * //=> 1940
  25. */
  26. function getDecade(dirtyDate) {
  27. (0, _index2.default)(1, arguments);
  28. var date = (0, _index.default)(dirtyDate);
  29. var year = date.getFullYear();
  30. var decade = Math.floor(year / 10) * 10;
  31. return decade;
  32. }
  33. module.exports = exports.default;