Funnel 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 STEPS: any = [
        'Visited',
        'Viewed pricing',
        'Started trial',
        'Activated',
        'Subscribed',
      ];

  private VISITORS: any = [12400, 7300, 3900, 2100, 1200];

  private DEVICES: any = {
        mobile: [7900, 3900, 1600, 700, 330],
        desktop: [4500, 3400, 2300, 1400, 870],
      };

  private seriesFor = (device: any): any => {
        var s = { name: 'Visitors', data: this.VISITORS }
        if (device) s.highlightData = this.DEVICES[device]
        return [s]
      };

  private pickDevice = (chart: any, device: any): any => {
        document.querySelectorAll('[data-device]').forEach(function (b) {
          b.classList.toggle('active', b.getAttribute('data-device') === device)
        })
        return chart.updateSeries(this.seriesFor(device))
      };

  private wireDevices = (chart: any): any => {
        document.querySelectorAll('[data-device]').forEach(function (b) {
          b.addEventListener('click', function () {
            this.pickDevice(chart, b.getAttribute('data-device'))
          })
        })
      };

  public chartOptions: Partial<ChartOptions> = {
          series: this.seriesFor('mobile'),
          chart: {
            id: 'signup',
            type: 'funnel',
            height: 360,
            toolbar: { show: false },
          },
          colors: ['#0284c7'],
          plotOptions: {
            bar: { barHeight: '82%', borderRadius: 0 },
          },
          dataLabels: {
            enabled: true,
            formatter: (v, opt) => {
              return (
                opt.w.globals.labels[opt.dataPointIndex] + ': ' + v.toLocaleString()
              )
            },
          },
          xaxis: { categories: this.STEPS },
          legend: { show: false },
        };
  ngAfterViewInit() {
    (window as any).ApexCharts.setLicense('APEX-eyJleHBpcnlEYXRlIjoiMjEyNi0wNy0wNCIsImlzc3VlRGF0ZSI6IjIwMjYtMDctMjgiLCJwbGFuIjoicHJlbWl1bSIsImRvbWFpbnMiOlsiYXBleGNoYXJ0cy5jb20iLCIxMjcuMC4wLjEiLCJsb2NhbGhvc3QiXSwic2lnIjoieVBmb1VCc0Z3TU9ZdUEyaEZkR0I2Y1FtZ0JITUtXcVdJSjB2NVRESXRZbFR3eDJMUmh6R2x0RUc3VXJ4X0s3b25ZMWRZb2Z2VGItN01ydFYyNDVyOWcifQ==');
    this.wireDevices(this.chart)

    function pickDevice(chart, device) {
          document.querySelectorAll('[data-device]').forEach(function (b) {
            b.classList.toggle('active', b.getAttribute('data-device') === device)
          })
          return this.chart.updateSeries(this.seriesFor(device))
        }
    function wireDevices(chart) {
          document.querySelectorAll('[data-device]').forEach(function (b) {
            b.addEventListener('click', () => {
              this.pickDevice(chart, b.getAttribute('data-device'))
            })
          })
        }
  }

  ngOnDestroy() {
    // no cleanup needed
  }
}