karma.conf.js

// Karma configuration file, see link for more information
// https://karma-runner.github.io/0.13/config/configuration-file.html

module.exports = function(config) {
    const configuration = {
        basePath: '',
        frameworks: ['jasmine', '@angular/cli'],
        plugins: [
            require('karma-jasmine'),
            require('karma-chrome-launcher'),
            require('karma-jasmine-html-reporter'),
            require('karma-coverage-istanbul-reporter'),
            require('@angular/cli/plugins/karma')
        ],
        coverageIstanbulReporter: {
            reports: ['html', 'lcovonly'],
            fixWebpackSourcePaths: true
        },
        angularCli: {
            environment: 'dev'
        },
        reporters: config.angularCli && config.angularCli.codeCoverage ?
            ['dots', 'coverage-istanbul'] :
            ['dots', 'kjhtml'],
        port: 9876,
        colors: true,
        logLevel: config.LOG_INFO,
        autoWatch: true,
        browsers: ['Chrome'],
        singleRun: false,
        customLaunchers: {
            Chrome_travis_ci: {
                base: 'ChromeHeadless',
                flags: ['--disable-translate', '--disable-extensions']
            }
        },
        mime: { 'text/x-typescript': ['ts', 'tsx'] },
        client: { captureConsole: true, clearContext: false },
        browserNoActivityTimeout: 60000,
        captureTimeout: 60000
    };

    if (process.env.TRAVIS) {
        configuration.browsers = ['ChromeHeadless'];
    }

    config.set(configuration);
};