Flame Graph in Angular

import { Component, AfterViewInit, OnDestroy, ViewChild } from '@angular/core';
import {
  ChartComponent,
  ApexAxisChartSeries,
  ApexNonAxisChartSeries,
  ApexChart,
  ApexXAxis,
  ApexYAxis,
  ApexTitleSubtitle,
  ApexDataLabels,
  ApexStroke,
  ApexFill,
  ApexLegend,
  ApexTooltip,
  ApexMarkers,
  ApexPlotOptions,
  ApexResponsive,
  ApexGrid,
  ApexAnnotations,
  ApexStates,
  ApexTheme,
  NgApexchartsModule,
} from 'ng-apexcharts';

export type ChartOptions = {
  series?: ApexAxisChartSeries | ApexNonAxisChartSeries;
  chart?: ApexChart;
  xaxis?: ApexXAxis;
  yaxis?: ApexYAxis | ApexYAxis[];
  title?: ApexTitleSubtitle;
  subtitle?: ApexTitleSubtitle;
  dataLabels?: ApexDataLabels;
  stroke?: ApexStroke;
  fill?: ApexFill;
  legend?: ApexLegend;
  tooltip?: ApexTooltip;
  markers?: ApexMarkers;
  plotOptions?: ApexPlotOptions;
  responsive?: ApexResponsive[];
  grid?: ApexGrid;
  annotations?: ApexAnnotations;
  states?: ApexStates;
  theme?: ApexTheme;
  colors?: string[];
  labels?: any;
};

@Component({
  selector: 'app-chart',
  standalone: true,
  imports: [NgApexchartsModule],
  templateUrl: './chart.component.html',
})
export class AppChart implements AfterViewInit, OnDestroy {
  @ViewChild('chart') chart!: ChartComponent;
  public chartOptions: Partial<ChartOptions> = {
          series: [
            {
              data: [
                {
                  x: 'main',
                  children: [
                    {
                      x: 'http.serve',
                      children: [
                        { x: 'router.match', y: 120 },
                        {
                          x: 'handler.report',
                          children: [
                            {
                              x: 'db.query',
                              children: [
                                { x: 'net.read', y: 640 },
                                { x: 'row.scan', y: 310 },
                              ],
                            },
                            {
                              x: 'json.encode',
                              children: [
                                { x: 'reflect.walk', y: 280 },
                                { x: 'buf.grow', y: 90 },
                              ],
                            },
                          ],
                        },
                        {
                          x: 'handler.upload',
                          children: [
                            { x: 'io.copy', y: 420 },
                            { x: 'hash.sum', y: 180 },
                          ],
                        },
                      ],
                    },
                    {
                      x: 'runtime.gc',
                      children: [
                        { x: 'mark', y: 520 },
                        { x: 'sweep', y: 140 },
                      ],
                    },
                    { x: 'sched.idle', y: 1080 },
                  ],
                },
              ],
            },
          ],
          chart: {
            type: 'icicle',
            height: 320,
          },
          // Warm hues, the flame-graph convention: the colour carries no meaning, it is
          // there to separate neighbouring branches of the call tree.
          colors: ['#EF4444', '#F97316', '#F59E0B', '#EAB308'],
          legend: {
            show: false,
          },
          title: {
            text: 'CPU profile: 4,100 samples',
            align: 'left',
          },
          subtitle: {
            text: 'Width is share of samples, height is stack depth. Click a frame to zoom.',
            align: 'left',
          },
          plotOptions: {
            icicle: {
              // Root at the bottom, stacks growing upward.
              direction: 'up',
              // Alphabetical siblings hold a frame in the same place across profiles, so
              // two runs of the same program can be compared by eye. Ordering by size
              // would move every frame and lose exactly that.
              sort: 'name',
              spacing: 1,
              dataLabels: {
                // Left, not the centred default: a profiler reader scans the left edge
                // of the stack, where a frame lines up with the one that called it.
                align: 'left',
                minSizeToShow: 44,
                style: {
                  fontSize: '11px',
                },
              },
            },
          },
          stroke: {
            width: 1,
            colors: ['#fff'],
          },
        };
  ngAfterViewInit() {
    (window as any).ApexCharts.setLicense('APEX-eyJleHBpcnlEYXRlIjoiMjEyNi0wNy0wNCIsImlzc3VlRGF0ZSI6IjIwMjYtMDctMjgiLCJwbGFuIjoicHJlbWl1bSIsImRvbWFpbnMiOlsiYXBleGNoYXJ0cy5jb20iLCIxMjcuMC4wLjEiLCJsb2NhbGhvc3QiXSwic2lnIjoieVBmb1VCc0Z3TU9ZdUEyaEZkR0I2Y1FtZ0JITUtXcVdJSjB2NVRESXRZbFR3eDJMUmh6R2x0RUc3VXJ4X0s3b25ZMWRZb2Z2VGItN01ydFYyNDVyOWcifQ==');
  }

  ngOnDestroy() {
    // no cleanup needed
  }
}