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boc/cc-frontend/node_modules/date-fns/esm/differenceInCalendarYears/index.js
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JavaScript

import toDate from "../toDate/index.js";
import requiredArgs from "../_lib/requiredArgs/index.js";
/**
* @name differenceInCalendarYears
* @category Year Helpers
* @summary Get the number of calendar years between the given dates.
*
* @description
* Get the number of calendar years between the given dates.
*
* @param {Date|Number} dateLeft - the later date
* @param {Date|Number} dateRight - the earlier date
* @returns {Number} the number of calendar years
* @throws {TypeError} 2 arguments required
*
* @example
* // How many calendar years are between 31 December 2013 and 11 February 2015?
* const result = differenceInCalendarYears(
* new Date(2015, 1, 11),
* new Date(2013, 11, 31)
* )
* //=> 2
*/
export default function differenceInCalendarYears(dirtyDateLeft, dirtyDateRight) {
requiredArgs(2, arguments);
var dateLeft = toDate(dirtyDateLeft);
var dateRight = toDate(dirtyDateRight);
return dateLeft.getFullYear() - dateRight.getFullYear();
}