JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://code.highcharts.com/highcharts.src.js"></script>
<div id="container" style="min-width: 400px; height: 400px; margin: 0 auto"></div>

JavaScript

$(function () {
    $(document).ready(function() {
        Highcharts.setOptions({
            global: {
                useUTC: false
            }
        });
        SplineSeries = Highcharts.seriesTypes.spline;
 

function stop(el) {
    $(el).stop();
}


SplineSeries.prototype.drawGraph = function () {
        var series = this,
            options = series.options,
            chart = series.chart,
            graph = series.graph,
            graphPath = [],
            group = series.group,
            color = options.lineColor || series.color,
            lineWidth = options.lineWidth,
            dashStyle =  options.dashStyle,
            segmentPath,
            renderer = chart.renderer,
            singlePoints = [], // used in drawTracker
            attribs,
            
            arrowLength = 15,
            arrowWidth = 8,
            path = [],
            segments = series.splinedata || series.segments,
            lastSeg = segments[segments.length - 1],
            lastPoint = lastSeg[lastSeg.length - 1],
            nextLastPoint = lastSeg[lastSeg.length - 2],
            angle = Math.atan((lastPoint.plotX - nextLastPoint.plotX) / (lastPoint.plotY - nextLastPoint.plotY));

        // divide into segments and build graph and area paths
        $.each(series.segments, function (i, segment) {
            
            segmentPath = series.getSegmentPath(segment);
            
            // add the segment to the graph, or a single point for tracking
            if (segment.length > 1) {
                graphPath = graphPath.concat(segmentPath);
            } else {
                singlePoints.push(segment[0]);
            }
        });
    
    
        // used in drawTracker:
        series.graphPath = graphPath;
        series.singlePoints = singlePoints;
    
        path.push(
            'M',
            lastPoint.plotX, lastPoint.plotY,
            'L',
            lastPoint.plotX + arrowWidth * Math.cos(angle), lastPoint.plotY -...