define(['./startOf'], function (startOf) {

    /**
     * Check if date is "same" with optional period
     */
    function isSame(date1, date2, period){
        if (period) {
            date1 = startOf(date1, period);
            date2 = startOf(date2, period);
        }
        return Number(date1) === Number(date2);
    }

    return isSame;

});