text: require('dotenv').config(); // eslint-disable-line import/no-extraneous-dependencies
  const webpack = require('webpack'); // eslint-disable-line import/no-extraneous-dependencies
  const webpackConfig = require('./webpack.config.js')(); // eslint-disable-line import/extensions
  
  // Webpack config tweaks for test-time
  delete webpackConfig.entry;
  delete webpackConfig.output;
  webpackConfig.devtool = 'inline-source-map';
  webpackConfig.plugins = [new webpack.EnvironmentPlugin(process.env)];
  
  // Karma config
  module.exports = function (config) {
    config.set({
      // base path that will be used to resolve all patterns (eg. files, exclude)
      basePath: '',
  
      // frameworks to use
      // available frameworks: https://npmjs.org/browse/keyword/karma-adapter
      frameworks: ['mocha', 'webpack'],
  
      // list of files / patterns to load in the browser
      files: [
        'test/browser-test-helper.js',
        'test/unit/common/**/*_test.js',
        'test/unit/browser/**/*_test.js',
        'test/integration/common/**/*_test.js',
        'test/integration/browser/**/*_test.js',
      ],
  
      // list of files to exclude
      exclude: [],
  
      // preprocess matching files before serving them to the browser
      // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
      preprocessors: {
        'test/browser-test-helper.js': ['webpack'],
        'test/unit/common/**/*_test.js': ['webpack', 'sourcemap'],
        'test/unit/browser/**/*_test.js': ['webpack', 'sourcemap'],
        'test/integration/common/**/*_test.js': ['webpack', 'sourcemap'],
        'test/integration/browser/**/*_test.js': ['webpack', 'sourcemap'],
      },
  
      // Webpack configuration for webpack preprocessor
      webpack: webpackConfig,
      webpackMiddleware: {
        // webpack-dev-middleware configuration
        // i. e.
        stats: 'errors-only',
      },
  
      // test results reporter to use
      // possible values: 'dots', 'progress'
      // available reporters: https://npmjs.org/browse/keyword/karma-reporter
      reporters: ['mocha'],
  
      // web server port
      port: 9876,
  
      // enable / disable colors in the output (reporters and logs)
      colors: true,
  
      // level of logging
      // possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
      logLevel: config.LOG_INFO,
  
      // enable / disable watching file and executing tests whenever any file changes
      autoWatch: true,
  
      // start these browsers
      // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
      browsers: ['ChromeHeadless'],
  
      // Continuous Integration mode
      // if true, Karma captures browsers, runs the tests and exits
      singleRun: true,
  
      // Concurrency level
      // how many browser should be started simultaneous
      concurrency: Infinity,
  
      browserNoActivityTimeout: 60000,
    });
  };
  