karma.conf.js

module.exports = function (config) {
  config.set({
    basePath: "",
    frameworks: ["jasmine"],
    files: ["**/*.spec.ts"],
    exclude: ["./node_modules/"],
    preprocessors: {
      "**/*.spec.ts": ["webpack", "coverage"],
    },
    webpack: {
      // karma watches the test entry points
      // (you don't need to specify the entry option)
      // webpack watches dependencies
      resolve: {
        extensions: [".ts", ".tsx", ".js"],
      },
      devtool: "inline-source-map",
      node: {
        fs: "empty",
      },
      module: {
        rules: [
          {
            test: /\.tsx?$/,
            loader: "awesome-typescript-loader",
          },
        ],
      },
      // webpack configuration
    },
    coverageReporter: {
      type: "lcov",
      dir: "coverage/",
    },
    webpackMiddleware: {
      // webpack-dev-middleware configuration
      // i. e.
      stats: "errors-only",
    },
    mime: {
      "text/x-typescript": ["ts", "tsx"],
    },
    reporters: ["progress", "coverage"],
    port: 9876,
    colors: true,
    logLevel: config.LOG_INFO,
    autoWatch: true,
    browsers: ["PhantomJS"],
    singleRun: true,
    concurrency: Infinity,
  });
};