"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = startOfHour;

var _index = _interopRequireDefault(require("../toDate/index.js"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

/**
 * @name startOfHour
 * @category Hour Helpers
 * @summary Return the start of an hour for the given date.
 *
 * @description
 * Return the start of an hour for the given date.
 * The result will be in the local timezone.
 *
 * ### v2.0.0 breaking changes:
 *
 * - [Changes that are common for the whole library](https://github.com/date-fns/date-fns/blob/master/docs/upgradeGuide.md#Common-Changes).
 *
 * @param {Date|Number} date - the original date
 * @returns {Date} the start of an hour
 * @throws {TypeError} 1 argument required
 *
 * @example
 * // The start of an hour for 2 September 2014 11:55:00:
 * var result = startOfHour(new Date(2014, 8, 2, 11, 55))
 * //=> Tue Sep 02 2014 11:00:00
 */
function startOfHour(dirtyDate) {
  if (arguments.length < 1) {
    throw new TypeError('1 argument required, but only ' + arguments.length + ' present');
  }

  var date = (0, _index.default)(dirtyDate);
  date.setMinutes(0, 0, 0);
  return date;
}

module.exports = exports.default;