Source: getMonth/index.js

import toDate from '../toDate/index'
import requiredArgs from '../_lib/requiredArgs/index'

/**
 * @name getMonth
 * @category Month Helpers
 * @summary Get the month of the given date.
 *
 * @description
 * Get the month of the given date.
 *
 * ### 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 given date
 * @returns {Number} the month
 * @throws {TypeError} 1 argument required
 *
 * @example
 * // Which month is 29 February 2012?
 * var result = getMonth(new Date(2012, 1, 29))
 * //=> 1
 */
export default function getMonth(dirtyDate) {
  requiredArgs(1, arguments)

  var date = toDate(dirtyDate)
  var month = date.getMonth()
  return month
}