vargetQuarter=require('../get_quarter/index.js')varparse=require('../parse/index.js')/** * @category Quarter Helpers * @summary Get the number of calendar quarters between the given dates. * * @description * Get the number of calendar quarters between the given dates. * * @param {Date|String|Number} dateLeft - the later date * @param {Date|String|Number} dateRight - the earlier date * @returns {Number} the number of calendar quarters * * @example * // How many calendar quarters are between 31 December 2013 and 2 July 2014? * var result = differenceInCalendarQuarters( * new Date(2014, 6, 2), * new Date(2013, 11, 31) * ) * //=> 3 */functiondifferenceInCalendarQuarters(dirtyDateLeft,dirtyDateRight){vardateLeft=parse(dirtyDateLeft)vardateRight=parse(dirtyDateRight)varyearDiff=dateLeft.getFullYear()-dateRight.getFullYear()varquarterDiff=getQuarter(dateLeft)-getQuarter(dateRight)returnyearDiff*4+quarterDiff}module.exports=differenceInCalendarQuarters