This demo uses imperative chart updates. The generated code is a faithful Angular translation: open it in CodeSandbox to run and tweak.

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: 'node_modules',
                  y: 428,
                },
                {
                  x: 'assets',
                  y: 213,
                },
                {
                  x: '.git',
                  y: 154,
                },
                {
                  x: 'build',
                  y: 96,
                },
                {
                  x: 'vendor',
                  y: 88,
                },
                {
                  x: 'public',
                  y: 61,
                },
                {
                  x: 'src',
                  y: 47,
                },
                {
                  x: 'cache',
                  y: 39,
                },
                {
                  x: 'docs',
                  y: 24,
                },
                {
                  x: 'tests',
                  y: 18,
                },
                {
                  x: 'logs',
                  y: 12,
                },
                {
                  x: 'config',
                  y: 6,
                },
              ],
            },
          ],
          legend: {
            show: false,
          },
          chart: {
            height: 350,
            type: 'treemap',
          },
          title: {
            text: 'Disk Usage by Folder (GB)',
            align: 'center',
          },
          colors: [
            '#3B93A5',
            '#F7B844',
            '#ADD8C7',
            '#EC3C65',
            '#CDD7B6',
            '#C1F666',
            '#D43F97',
            '#1E5D8C',
            '#421243',
            '#7F94B0',
            '#EF6537',
            '#C0ADDB',
          ],
          plotOptions: {
            treemap: {
              distributed: true,
              enableShades: false,
            },
          },
        };
  ngAfterViewInit() {
    (window as any).ApexCharts.setLicense('APEX-eyJleHBpcnlEYXRlIjoiMjEyNi0wNy0wNCIsImlzc3VlRGF0ZSI6IjIwMjYtMDctMjgiLCJwbGFuIjoicHJlbWl1bSIsImRvbWFpbnMiOlsiYXBleGNoYXJ0cy5jb20iLCIxMjcuMC4wLjEiLCJsb2NhbGhvc3QiXSwic2lnIjoieVBmb1VCc0Z3TU9ZdUEyaEZkR0I2Y1FtZ0JITUtXcVdJSjB2NVRESXRZbFR3eDJMUmh6R2x0RUc3VXJ4X0s3b25ZMWRZb2Z2VGItN01ydFYyNDVyOWcifQ==');
  }

  ngOnDestroy() {
    // no cleanup needed
  }
}
Distributed Treemap - Angular Treemap Charts | ApexCharts.js | ApexCharts.js