karma.conf.js

module.exports = function (config) {
    config.set({
        files: ['tests/**/*.ts', 'src/**/*.ts'],
        preprocessors: {
            '**/*.ts': ['karma-typescript', 'coverage'],
        },
        karmaTypescriptConfig: {
            compilerOptions: {
                module: 'commonjs',
                sourceMap: true,
                target: 'es6',
            },
            exclude: ['node_modules'],
        },
        coverageReporter: {
            dir: 'coverage/',
            type: 'lcovonly',
            subdir: '.',
        },
        reporters: ['progress', 'coverage'],
        frameworks: ['mocha', 'karma-typescript'],
        port: 9876,
        colors: true,
        logLevel: config.LOG_INFO,
        browsers: ['ChromeHeadless'],
        autoWatch: true,
        singleRun: true,
        concurrency: Infinity,
    });
};