karma.conf.js

const jasmineSeedReporter = require('karma-jasmine-seed-reporter');

module.exports = function (config) {
  config.set({
    frameworks: ['jasmine', 'karma-typescript'],
    browsers: ['ChromeHeadlessNoSandbox'],
    reporters: ['progress', 'karma-typescript', 'jasmine-seed'],
    plugins: ['karma-*', jasmineSeedReporter],
    client: {
      jasmine: {
        random: true,
        // seed: process.env['JASMINE_SEED'] // allows you to override the seed via an environment variable
      },
    },
    files: [
      './index.ts',
      './common/index.ts',
      './common/IAsyncStorageStrategy.ts',
      './common/IStorageStrategy.ts',
      './common/DOMStorageStrategy.ts',
      './common/LocalStorageStrategy.ts',
      './common/InMemoryStorageStrategy.ts',
      './common/CacheBusterFunctions.ts',
      './cacheable.decorator.ts',
      './cache-buster.decorator.ts',
      './promise.cache-buster.decorator.ts',
      './promise.cacheable.decorator.ts',
      './specs/observable-cacheable.decorator.spec.ts',
      './specs/promise-cacheable.decorator.spec.ts',
      './specs/cache-buster.decorator.spec.ts',
      './specs/promise.cache-buster.decorator.spec.ts',
      './specs/cat.ts',
      './specs/service.interface.ts',
    ],
    preprocessors: {
      '**/*.ts': 'karma-typescript',
    },
    karmaTypescriptConfig: {
      tsconfig: './tsconfig.json',
      reports: {
        lcovonly: {
          directory: 'coverage',
          subdirectory: 'lcov',
          filename: 'coverage.xml',
        },
      },
    },
    // you can define custom flags
    customLaunchers: {
      ChromeHeadlessNoSandbox: {
        base: 'ChromeHeadless',
        flags: ['--no-sandbox'],
      },
    },
    singleRun: true
  });
};