Test Coverage in Ionic Apps

Hi

I am writing Unit Test cases for my Ionic apps with the use of Karma and Jasmine.

But problem arise when checking for code coverage.

I gone through below link

but its not working and getting below error.

Server start failed on port 9876: Error: The ‘@angular-devkit/build-angular/plugins/karma’ karma plugin is meant to be used from within Angular CLI and will not work correctly outside of it.

My karma.conf.ts

module.exports = function (config) {
  config.set({
    basePath: '',
    frameworks: ['jasmine', '@angular-devkit/build-angular'],
    plugins: [
      require('karma-jasmine'),
      require('karma-chrome-launcher'),
      require('karma-jasmine-html-reporter'),
      require('karma-coverage-istanbul-reporter'),
      require('@angular-devkit/build-angular/plugins/karma')
    ],
    client: {
      clearContext: false // leave Jasmine Spec Runner output visible in browser
    },
    coverageIstanbulReporter: {
      dir: require('path').join(__dirname, '../coverage'),
      reports: ['html', 'lcovonly', 'text-summary'],
      fixWebpackSourcePaths: true
    },
    reporters: ['progress', 'kjhtml'],
    port: 9876,
    colors: true,
    logLevel: config.LOG_INFO,
    autoWatch: true,
    browsers: ['Chrome'],
    singleRun: false
  });
};

If anybody knows solution let me know.

Thanks