karma.conf.js

// Karma configuration file, see link for more information
// https://karma-runner.github.io/1.0/config/configuration-file.html
// tslint:disable trailing-comma
// tslint:disable object-literal-sort-keys
module.exports = function(config) {
    config.set({
      basePath: "./src/",
      frameworks: ["jasmine", "karma-typescript"],
      files: [
        { pattern: "**/*.ts" }
      ],
      port: 8080,
      plugins: [
        require("karma-jasmine"),
        require("karma-typescript"),
        require("karma-chrome-launcher"),
        require("karma-jasmine-html-reporter"),
        require('karma-mocha-reporter')
      ],
      preprocessors: {
        "**/*.ts": "karma-typescript" // *.tsx for React Jsx
      },
      karmaTypescriptConfig: {
        tsconfig: "../tsconfig.spec.json"
      },
      customLaunchers: {
        ChromeHeadlessNoSandbox: {
          base: 'ChromeHeadless',
          flags: [
            '--no-sandbox',
            '--remote-debugging-port=9222'
          ]
        }
      },
      reporters: [ 'kjhtml', 'mocha' ],
      colors: true,
      logLevel: config.LOG_INFO,
      autoWatch: true,
      browsers: [ "ChromeHeadlessNoSandbox" ],
      singleRun: false
    });
  };
  // tslint:enable trailing-comma
  // tslint:enable object-literal-sort-keys