https://tchncs.de/chartjs-plugin-trendline.min.js

1/*! For license information please see chartjs-plugin-trendline.min.js.LICENSE.txt */
2(()=>{var t={460:(t,i)=>{var e={id:"chartjs-plugin-trendline",afterDatasetsDraw:function(t){var i,e;for(var a in t.scales)if("x"==a[0]?e=t.scales[a]:i=t.scales[a],e&&i)break;var r=t.ctx;t.data.datasets.forEach((function(i,a){if(i.trendlineLinear&&t.isDatasetVisible(a)&&0!=i.data.length){var n=t.getDatasetMeta(a);!function(t,i,e,a,r){var n=e.borderColor||"rgba(169,169,169, .6)",o=e.trendlineLinear.colorMin||n,h=e.trendlineLinear.colorMax||n,l=e.trendlineLinear.width||e.borderWidth,u=e.trendlineLinear.lineStyle||"solid",d=e.trendlineLinear.fillColor;l=void 0!==l?l:3;var m=new s,c=e.data.findIndex((t=>null!=t)),x=e.data.length-1,f=t.data[c].x,X=t.data[x].x,v="object"==typeof e.data[c];e.data.forEach((function(t,i){if(null!=t)if("time"===a.options.type){var e=null!=t.x?t.x:t.t;m.add(new Date(e).getTime(),t.y)}else v?m.add(t.x,t.y):m.add(i,t)}));var p,g,w=a.getPixelForValue(m.minx),y=r.getPixelForValue(m.f(m.minx));if(e.trendlineLinear.projection&&m.scale()<0){var Y=m.fo();Y<m.minx&&(Y=m.maxx),p=a.getPixelForValue(Y),g=r.getPixelForValue(m.f(Y))}else p=a.getPixelForValue(m.maxx),g=r.getPixelForValue(m.f(m.maxx));v||(w=f,p=X);var P=t.controller.chart.chartArea.bottom,C=t.controller.chart.width;if(y>P){var L=y-P,b=y-g;y=P,w+=C*(L/b)}else g>P&&(L=g-P,b=g-y,g=P,p=C-(p-(C-C*(L/b))));i.lineWidth=l,"dotted"===u&&i.setLineDash([2,3]),i.beginPath(),i.moveTo(w,y),i.lineTo(p,g);var F=i.createLinearGradient(w,y,p,g);g<y?(F.addColorStop(0,h),F.addColorStop(1,o)):(F.addColorStop(0,o),F.addColorStop(1,h)),i.strokeStyle=F,i.stroke(),i.closePath(),!d||(i.fillStyle=d,i.beginPath(),i.moveTo(w,y),i.lineTo(p,g),i.lineTo(p,P),i.lineTo(w,P),i.closePath(),i.fill())}(n,r,i,e,t.scales[n.yAxisID])}})),r.setLineDash([])}};function s(){this.count=0,this.sumX=0,this.sumX2=0,this.sumXY=0,this.sumY=0,this.minx=1e100,this.maxx=-1e100,this.maxy=-1e100}s.prototype={add:function(t,i){t=parseFloat(t),i=parseFloat(i),this.count++,this.sumX+=t,this.sumX2+=t*t,this.sumXY+=t*i,this.sumY+=i,t<this.minx&&(this.minx=t),t>this.maxx&&(this.maxx=t),i>this.maxy&&(this.maxy=i)},f:function(t){t=parseFloat(t);var i=this.count*this.sumX2-this.sumX*this.sumX;return(this.sumX2*this.sumY-this.sumX*this.sumXY)/i+t*((this.count*this.sumXY-this.sumX*this.sumY)/i)},fo:function(){var t=this.count*this.sumX2-this.sumX*this.sumX;return-(this.sumX2*this.sumY-this.sumX*this.sumXY)/t/((this.count*this.sumXY-this.sumX*this.sumY)/t)},scale:function(){var t=this.count*this.sumX2-this.sumX*this.sumX;return(this.count*this.sumXY-this.sumX*this.sumY)/t}},"undefined"!=typeof window&&window.Chart&&(window.Chart.hasOwnProperty("register")?window.Chart.register(e):window.Chart.plugins.register(e));try{t.exports=e}catch(t){}}},i={};!function e(s){var a=i[s];if(void 0!==a)return a.exports;var r=i[s]={exports:{}};return t[s](r,r.exports,e),r.exports}(460)})();