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import toDate from '../toDate/index.ts'import requiredArgs from '../_lib/requiredArgs/index.ts'
/** * @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. * * ### 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} 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: Date | number,  dirtyDateRight: Date | number): number {  requiredArgs(2, arguments)
  const dateLeft = toDate(dirtyDateLeft)  const dateRight = toDate(dirtyDateRight)
  return dateLeft.getFullYear() - dateRight.getFullYear()}