bitwarden-browser/spec/support/karma.conf.js

module.exports = (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: ['jasmine', 'karma-typescript', 'detectBrowsers'],

        // list of files / patterns to load in the browser
        files: [
            'spec/utils.ts',
            'spec/common/**/*.ts',
            'spec/web/**/*.ts',
            'src/abstractions/**/*.ts',
            'src/importers/**/*.ts',
            'src/enums/**/*.ts',
            'src/models/**/*.ts',
            'src/misc/**/*.ts',
            'src/services/**/*.ts'
        ],

        // 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: {
            '**/*.ts': 'karma-typescript'
        },

        // test results reporter to use
        // possible values: 'dots', 'progress'
        // available reporters: https://npmjs.org/browse/keyword/karma-reporter
        reporters: ['progress', 'karma-typescript', 'kjhtml'],

        // 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,

        // Concurrency level
        // how many browser should be started simultaneous
        concurrency: Infinity,

        client: {
            clearContext: false // leave Jasmine Spec Runner output visible in browser
        },

        karmaTypescriptConfig: {
            tsconfig: './tsconfig.json',
            bundlerOptions: {
                entrypoints: /\.spec\.ts$/,
                sourceMap: true,
                resolve: {
                    alias: {
                        "util": "node_modules/util/util.js"
                    }
                }
            }
        },

        detectBrowsers: {
            usePhantomJS: false,
            postDetection: (availableBrowsers) => {
                const result = availableBrowsers;
                function removeBrowser(browser) {
                    if (availableBrowsers.length > 1 && availableBrowsers.indexOf(browser) > -1) {
                        result.splice(result.indexOf(browser), 1);
                    }
                }

                removeBrowser('IE');
                removeBrowser('Opera');
                removeBrowser('SafariTechPreview');

                var ci = process.env.CI === 'True' || process.env.CI === 'true';
                var githubAction = process.env.GITHUB_WORKFLOW != null && process.env.GITHUB_WORKFLOW !== '';
                if (githubAction) {
                    removeBrowser('Edge');                    
                    removeBrowser('Firefox');
                    removeBrowser('Safari');
                }

                return result;
            }
        },
    })
}