karma.conf.js

let isTravis = process.env.TRAVIS

const reporters = ['progress', 'karma-typescript']
const coverageReporter = {
  reporters: []
}

if (isTravis) {
  reporters.push('coverage', 'coveralls')
  coverageReporter.reporters.push({
    type: 'lcov',
    dir: 'coverage/'
  })
}

module.exports = function(config) {
  config.set({
    frameworks: ['mocha', 'chai', 'sinon', 'karma-typescript', 'jquery-1.8.3'],
    singleRun: isTravis,
    files: [
      { pattern: 'src/**/*.ts' },
      { pattern: 'test/**/*.ts' },
    ],
    preprocessors: {
      '**/*.ts': ['karma-typescript'],
    },
    reporters,
    coverageReporter,
    browsers: isTravis ? ['Chrome_travis_ci'] : ['Chrome'],
    customLaunchers: {
      Chrome_travis_ci: {
        base: 'Chrome',
        flags: ['--no-sandbox']
      }
    },
    karmaTypescriptConfig: {
      bundlerOptions: {
        validateSyntax: false,
        sourceMap: true,
      },
      compilerOptions: {
        allowJs: true,
        moduleResolution: 'node',
        lib: [
          "es6",
          "es2015",
          "es2016",
          "es2017",
          "dom",
          "dom.iterable",
          "scripthost"
        ]
      }
    }
  });
};