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index.js
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index.js
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import getISOWeekYear from '../getISOWeekYear/index.js'
import setISOWeekYear from '../setISOWeekYear/index.js'
/**
* @name addISOWeekYears
* @category ISO Week-Numbering Year Helpers
* @summary Add the specified number of ISO week-numbering years to the given date.
*
* @description
* Add the specified number of ISO week-numbering years to the given date.
*
* ISO week-numbering year: http://en.wikipedia.org/wiki/ISO_week_date
*
* @param {Date|String|Number} date - the date to be changed
* @param {Number} amount - the amount of ISO week-numbering years to be added
* @param {Options} [options] - the object with options. See [Options]{@link https://date-fns.org/docs/Options}
* @param {0|1|2} [options.additionalDigits=2] - passed to `toDate`. See [toDate]{@link https://date-fns.org/docs/toDate}
* @returns {Date} the new date with the ISO week-numbering years added
* @throws {TypeError} 2 arguments required
* @throws {RangeError} `options.additionalDigits` must be 0, 1 or 2
*
* @example
* // Add 5 ISO week-numbering years to 2 July 2010:
* var result = addISOWeekYears(new Date(2010, 6, 2), 5)
* //=> Fri Jun 26 2015 00:00:00
*/
export default function addISOWeekYears (dirtyDate, dirtyAmount, dirtyOptions) {
if (arguments.length < 2) {
throw new TypeError('2 arguments required, but only ' + arguments.length + ' present')
}
var amount = Math.trunc(Number(dirtyAmount))
return setISOWeekYear(dirtyDate, getISOWeekYear(dirtyDate, dirtyOptions) + amount, dirtyOptions)
}