k;case"quarter":r=et(this,s)/3;break;case"second":r=(this-s)/1e3;break;case"minute":r=(this-s)/6e4;break;case"hour":r=(this-s)/36e5;break;case"day":r=(this-s-n)/864e5;break;case"week":r=(this-s-n)/6048e5;break;default:r=this-s}return t?r:U(r)},yt.endOf=function(e){var a,t;if(void 0===(e=N(e))||"millisecond"===e||!this.isValid())return this;switch(t=this._isUTC?it:dt,e){case"year":a=t(this.year()+1,0,1)-1;break;case"quarter":a=t(this.year(),this.month()-this.month()%3+3,1)-1;break;case"month":a=t...