karma.conf.js

const path = require('path');
const inlineComponentTemplate = require("./processor").inlineComponentTemplate;
const coverage = require("rollup-plugin-istanbul");
const commonjs = require("@rollup/plugin-commonjs");
const nodeResolve = require("@rollup/plugin-node-resolve").nodeResolve;
const typescript = require("@rollup/plugin-typescript");
//process.env.CHROME_BIN = '/usr/bin/google-chrome-stable';

// Karma configuration file
module.exports = function (karma) {
  karma.set({
    basePath: '',
    frameworks: ['jasmine'],
    mime: { 'text/x-typescript': ['ts','tsx'] },
    files: [
        { pattern: "./src/tests.specs.ts" }
    ],
    preprocessors: {
        "./src/tests.specs.ts" : ['coverage', 'rollup', 'sourcemap']
    },
    rollupPreprocessor: {
			plugins: [
        coverage({
          exclude: ['node_modules/**', '**/*.spec.ts', '**/*.mock.ts', 'src/tests.spec.ts']
        }),
        inlineComponentTemplate(),
  			typescript({ exclude: ['e2e/**/*'] }),
  			nodeResolve({
  				extensions: ['.js', '.ts']
  			}),
  			commonjs({
  				extensions: ['.js', '.ts'],
  				transformMixedEsModules: true
  			})
      ],
			output: {
				sourcemap: 'inline'
			},
		},
    coverageIstanbulReporter: {
      dir: path.resolve(__dirname, './coverage'),
      reports: ['html', 'lcovonly', 'text-summary']
    },
    client: {
      clearContext: false // leave Jasmine Spec Runner output visible in browser
    },
    reporters: ['progress', 'kjhtml', 'coverage', 'coverage-istanbul'],
    port: 9876,
    logLevel: 'DEBUG',
    autoWatch: false,
    browsers: ['ChromeNoSandbox'],
    customLaunchers: {
      ChromeNoSandbox: {
        base: 'ChromeHeadless',
        flags: [
            '--disable-gpu',
            '--no-sandbox',
            '--disable-setuid-sandbox',
            '--disable-extensions',
            '--disable-dev-shm-usage'
        ]
      }
    },
    singleRun: true
  });
};