module.exports = function()

in toolings/tfjs-debugger/karma-ci.conf.js [21:123]
90 lines of code
1 McCabe index (conditional complexity)

module.exports = function(config) {
  config.set({
    basePath: '',
    singleRun: true,
    frameworks: ['jasmine', '@angular-devkit/build-angular'],
    plugins: [
      require('karma-jasmine'),
      require('karma-chrome-launcher'),
      require('karma-browserstack-launcher'),
      require('karma-jasmine-html-reporter'),
      require('karma-coverage'),
      require('@angular-devkit/build-angular/plugins/karma'),
    ],
    client: {
      jasmine: {
          // you can add configuration options for Jasmine here
          // the possible options are listed at
          // https://jasmine.github.io/api/edge/Configuration.html
          // for example, you can disable the random execution with `random:
          // false`
          // or set a specific seed with `seed: 4321`
      },
      clearContext:
          false  // leave Jasmine Spec Runner output visible in browser
    },
    jasmineHtmlReporter: {
      suppressAll: true  // removes the duplicated traces
    },
    coverageReporter: {
      dir: require('path').join(__dirname, './coverage/tfjs-debugger'),
      subdir: '.',
      reporters: [{type: 'html'}, {type: 'text-summary'}]
    },
    reporters: ['progress', 'kjhtml'],
    hostname: 'bs-local.com',
    port: 9886,
    colors: true,
    logLevel: config.LOG_INFO,
    browsers: ['bs_chrome_mac'],
    restartOnFileChange: true,
    browserStack: {
      username: process.env.BROWSERSTACK_USERNAME,
      accessKey: process.env.BROWSERSTACK_KEY,
      timeout: 1800,
      tunnelIdentifier:
          `tfjs_debugger_${Date.now()}_${Math.floor(Math.random() * 1000)}`
    },
    captureTimeout: 3e5,
    reportSlowerThan: 500,
    browserNoActivityTimeout: 3e5,
    browserDisconnectTimeout: 3e5,
    browserDisconnectTolerance: 3,
    browserSocketTimeout: 1.2e5,
    customLaunchers: {
      // For browserstack configs see:
      // https://www.browserstack.com/automate/node
      bs_chrome_mac: {
        base: 'BrowserStack',
        browser: 'chrome',
        browser_version: 'latest',
        os: 'OS X',
        os_version: 'High Sierra'
      },
      bs_firefox_mac: {
        base: 'BrowserStack',
        browser: 'firefox',
        browser_version: 'latest',
        os: 'OS X',
        os_version: 'High Sierra'
      },
      bs_safari_mac: {
        base: 'BrowserStack',
        browser: 'safari',
        browser_version: 'latest',
        os: 'OS X',
        os_version: 'High Sierra'
      },
      bs_ios_11: {
        base: 'BrowserStack',
        device: 'iPhone X',
        os: 'iOS',
        os_version: '11.0',
        real_mobile: true
      },
      bs_android_9: {
        base: 'BrowserStack',
        device: 'Google Pixel 3 XL',
        os: 'android',
        os_version: '9.0',
        real_mobile: true
      },
      win_10_chrome: {
        base: 'BrowserStack',
        browser: 'chrome',
        // Latest Chrome on Windows has WebGL problems:
        // https://github.com/tensorflow/tfjs/issues/2272
        browser_version: '77.0',
        os: 'Windows',
        os_version: '10'
      },
    },
  });
};