karma.conf.js

// Karma configuration

module.exports = function(config) {
    var appBase    = 'app/';       // transpiled app JS and map files
    var appSrcBase = 'app/';       // app source TS files
    var appAssets  = '/base/app/'; // component assets fetched by Angular's compiler. all assets served up at http://localhost/base/

  config.set({
    basePath: '',
  
    frameworks: ['jasmine'],

    plugins: [
      require('karma-jasmine'),
      require('karma-chrome-launcher'),
    ],

    files: [
      'node_modules/systemjs/dist/system.src.js',

      // Polyfills
      'node_modules/core-js/client/shim.js',
      'node_modules/reflect-metadata/Reflect.js',

      // zone.js
      'node_modules/zone.js/dist/zone.js',
      'node_modules/zone.js/dist/long-stack-trace-zone.js',
      'node_modules/zone.js/dist/proxy.js',
      'node_modules/zone.js/dist/sync-test.js',
      'node_modules/zone.js/dist/jasmine-patch.js',
      'node_modules/zone.js/dist/async-test.js',
      'node_modules/zone.js/dist/fake-async-test.js',

      // RxJs
      { pattern: 'node_modules/rxjs/**/*.js', included: false, watched: false },
      { pattern: 'node_modules/rxjs/**/*.js.map', included: false, watched: false },

      // Paths loaded via module imports:
      // Angular itself
      { pattern: 'node_modules/@angular/**/*.js', included: false, watched: false },
      { pattern: 'node_modules/@angular/**/*.js.map', included: false, watched: false },

      { pattern: 'systemjs.config.js', included: false, watched: false },
      'karma-test-shim.js',

      // transpiled application & spec code paths loaded via module imports
      { pattern: appBase + '**/*.js', included: false, watched: true },

      // Asset (HTML & CSS) paths loaded via Angular's component compiler
      // (these paths need to be rewritten, see proxies section)
      { pattern: appBase + '**/*.html', included: false, watched: true },
      { pattern: appBase + '**/*.css', included: false, watched: true },

      // Paths for debugging with source maps in dev tools
      { pattern: appSrcBase + '**/*.ts', included: false, watched: false },
      { pattern: appBase + '**/*.js.map', included: false, watched: false },
    ],

    proxies: {
      // required for component assets fetched by Angular's compiler
      "/app/": appAssets
    },

    exclude: [
    ],

    preprocessors: {
    },

    reporters: ['progress'],
    port: 9876,
    colors: true,
    logLevel: config.LOG_INFO,
    autoWatch: true,
    browsers: ['Chrome'],
    singleRun: false,
    concurrency: Infinity
  })
}