index.js

import toDate from '../toDate/index.js'

/**
 * @name addDays
 * @category Day Helpers
 * @summary Add the specified number of days to the given date.
 *
 * @description
 * Add the specified number of days to the given date.
 *
 * @param {Date|String|Number} date - the date to be changed
 * @param {Number} amount - the amount of days to be added
 * @param {Options} [options] - the object with options. See [Options]{@link docs/Options}
 * @param {0|1|2} [options.additionalDigits=2] - passed to `toDate`. See [toDate]{@link docs/toDate}
 * @returns {Date} the new date with the days added
 * @throws {RangeError} `options.additionalDigits` must be 0, 1 or 2
 *
 * @example
 * // Add 10 days to 1 September 2014:
 * var result = addDays(new Date(2014, 8, 1), 10)
 * //=> Thu Sep 11 2014 00:00:00
 */
export default function addDays (dirtyDate, dirtyAmount, dirtyOptions) {
  var date = toDate(dirtyDate, dirtyOptions)
  var amount = Number(dirtyAmount)
  date.setDate(date.getDate() + amount)
  return date
}