Treemap 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;
  private product = (name: any, total: any, north: any, south: any, west: any): any => {
        return {
          x: name,
          y: total,
          region: { north: north, south: south, west: west },
        }
      };

  private DEPARTMENTS: any = [
        {
          name: 'Apparel',
          data: [
            {
              x: 'Outerwear',
              children: [
                this.product('Jackets', 96, 52, 18, 26),
                this.product('Coats', 64, 41, 9, 14),
              ],
            },
            {
              x: 'Basics',
              children: [
                this.product('Tees', 58, 14, 25, 19),
                this.product('Socks', 22, 6, 9, 7),
                this.product('Hoodies', 40, 21, 8, 11),
              ],
            },
          ],
        },
        {
          name: 'Electronics',
          data: [
            {
              x: 'Audio',
              children: [
                this.product('Headphones', 88, 24, 30, 34),
                this.product('Speakers', 46, 10, 19, 17),
              ],
            },
            {
              x: 'Wearables',
              children: [
                this.product('Watches', 72, 15, 23, 34),
                this.product('Trackers', 30, 6, 13, 11),
              ],
            },
          ],
        },
        {
          name: 'Home',
          data: [
            {
              x: 'Kitchen',
              children: [
                this.product('Cookware', 54, 13, 27, 14),
                this.product('Knives', 26, 7, 11, 8),
              ],
            },
            {
              x: 'Living',
              children: [
                this.product('Lamps', 36, 9, 16, 11),
                this.product('Rugs', 48, 22, 15, 11),
              ],
            },
          ],
        },
      ];

  private money = (v: any): any => {
        return '$' + Math.round(v) + 'k'
      };

  private pickRegion = (region: any): any => {
        document.querySelectorAll('[data-region]').forEach(function (b) {
          b.classList.toggle('active', b.getAttribute('data-region') === region)
        })
        var chart = ApexCharts.getChartByID('revenue')
        // A pick is an ordinary update; clear() takes every part off again.
        if (!region) return chart.highlightFilter.clear()
        chart.highlightFilter.set(function (o) {
          return o.datum.region[region]
        })
      };

  private wireRegions = (): any => {
        document.querySelectorAll('[data-region]').forEach(function (b) {
          b.addEventListener('click', function () {
            this.pickRegion(b.getAttribute('data-region'))
          })
        })
      };

  public chartOptions: Partial<ChartOptions> = {
          series: this.DEPARTMENTS.map(function (d) {
            return {
              name: d.name,
              data: d.data.map(function (c) {
                return {
                  x: c.x,
                  children: c.children.map(function (p) {
                    return Object.assign({}, p, { highlight: p.region.north })
                  }),
                }
              }),
            }
          }),
          chart: {
            id: 'revenue',
            type: 'treemap',
            height: 460,
            toolbar: { show: false },
          },
          colors: ['#0284c7', '#0f766e', '#d97706'],
          legend: { show: false },
          stroke: { width: 2, colors: ['#fff'] },
          dataLabels: {
            enabled: true,
            style: { fontSize: '12px', fontWeight: 600 },
          },
          title: { text: 'Revenue by product, $k', style: { fontSize: '13px' } },
          tooltip: {
            y: { formatter: this.money },
          },
          plotOptions: {
            treemap: {
              borderRadius: 3,
              zoom: { enabled: true },
              parents: {
                padding: 3,
                header: {
                  // A header states the region's part of its group against the group.
                  formatter: (name, o) => {
                    var h = o.node.highlight
                    return h && h.value != null
                      ? name + '  ' + this.money(h.value) + ' / ' + this.money(h.total)
                      : name + '  ' + this.money(o.value)
                  },
                },
              },
            },
          },
          highlightFilter: { fadeOpacity: 0.25 },
        };
  ngAfterViewInit() {
    (window as any).ApexCharts.setLicense('APEX-eyJleHBpcnlEYXRlIjoiMjEyNi0wNy0wNCIsImlzc3VlRGF0ZSI6IjIwMjYtMDctMjgiLCJwbGFuIjoicHJlbWl1bSIsImRvbWFpbnMiOlsiYXBleGNoYXJ0cy5jb20iLCIxMjcuMC4wLjEiLCJsb2NhbGhvc3QiXSwic2lnIjoieVBmb1VCc0Z3TU9ZdUEyaEZkR0I2Y1FtZ0JITUtXcVdJSjB2NVRESXRZbFR3eDJMUmh6R2x0RUc3VXJ4X0s3b25ZMWRZb2Z2VGItN01ydFYyNDVyOWcifQ==');
    this.wireRegions()

    function wireRegions() {
          document.querySelectorAll('[data-region]').forEach(function (b) {
            b.addEventListener('click', () => {
              this.pickRegion(b.getAttribute('data-region'))
            })
          })
        }
  }

  ngOnDestroy() {
    // no cleanup needed
  }
}