# Tried new way of importing modules. (app.module.ts). Imported more module in app.module. Also in component have json structre with drilldown . Still unable to render on the page
   " import { ChartModule, HIGHCHARTS_MODULES } from 'angular-highcharts';
    import more from 'highcharts/highcharts-more.src';
    import exporting from 'highcharts/modules/exporting.src';"
   ## Refer : https://github.com/manhar-developer/angularwidCharts
    ----------------------------------------------------------------------
   ###  - Component Code :
    import { Component, OnInit } from '@angular/core';
    import { Chart } from 'angular-highcharts';
    declare var require: any;
    const Highcharts = require('highcharts');
    export class LineChartComponent implements OnInit {
      constructor() { }
    chart1 = new Chart({
        // Created pie chart using Highchart
        chart: {
          type: 'pie',
          options3d: {
              enabled: true,
              alpha: 45
          }
      },
      title: {
          text: 'Contents using Pie chart'
      },
      subtitle: {
          text: '3D donut in Highcharts'
      },
      plotOptions: {
          pie: {
              innerSize: 100,
              depth: 45
          }
      },
// Able to use series and working fine while rendering but upon clicking , Drill //down not working
    series: [{
      name: 'Operating Systems',
      data: [
        {
          name: 'Windows',
          y: 88.19,
          drilldown: 'windows-versions'
        },
        ['MacOSX', 9.22],
        ['Linux', 1.58],
        ['Others', 1.01]
      ]
    }],
    drilldown: {
      series: [{
        name: 'Windows versions',
        id: 'windows-versions',
        data: [
          ['Win 7', 55.03],
          ['Win XP', 15.83],
          ['Win Vista', 3.59],
          ['Win 8', 7.56],
          ['Win 8.1', 6.18]
        ]
      }]
    }
    });
    -------------------------
In this section imported chartModule, Highcharts_modules and more module app.module.ts
    import { BrowserModule } from '@angular/platform-browser';
    import { NgModule } from '@angular/core';
    import {ChartModule , HIGHCHARTS_MODULES} from 'angular-highcharts';
    import more from 'highcharts/highcharts-more.src';
    import exporting from 'highcharts/modules/exporting.src.js';
    import { AppComponent } from './app.component';
    import { LineChartComponent } from './components/line-chart/line-chart.component';
    export function highchartsModules() {
      // apply Highcharts Modules to this array
      return [ more,exporting ];
    }
    @NgModule({
      declarations: [
        AppComponent,
        LineChartComponent
      ],
      imports: [
        BrowserModule,ChartModule
      ],
      providers: [],
      bootstrap: [AppComponent]
    })
    export class AppModule { }