karma / jasmine / ES6

karma.conf.js

module.exports = function (config) {
    config.set({
        frameworks: ['jspm', 'jasmine-ajax', 'jasmine'],

        reporters: ['spec'],

        files: [
            'node_modules/babel-polyfill/dist/polyfill.js'
        ],

        jspm: {
            config: 'Scripts/config.js',
            loadFiles: [
                'Scripts/spec/**/*.js'
            ],
            serveFiles: [
                'Scripts/src/**/*.js'
            ]
        },

        proxies: {
            '/Scripts/': '/base/Scripts',
            '/src/': '/Scripts/src',
            '/jspm_packages/': '/Scripts/jspm_packages'
        },

        browsers: ['PhantomJS'],

        preprocessors: {
            'Scripts/spec/**/*.js': ['babel'],
            'Scripts/src/**/*.js': ['babel']
        },

        babelPreprocessor: {
            options: {
                presets: ['es2015'],
                sourceMap: 'inline'
            },
            sourceFileName: function (file) {
                return file.originalPath;
            }
        }
    });
};

package.json

{
  "jspm": {
    "directories": {
      "baseURL": "Scripts"
    },
    "dependencies": {
      "bootstrap": "github:twbs/bootstrap@^3.3.5",
      "jquery": "github:components/jquery@^2.1.4",
      "knockout": "github:knockout/knockout@^3.3.0",
      "knockout-validation": "github:Knockout-Contrib/Knockout-Validation@^2.0.3",
      "underscore": "npm:underscore@^1.8.3"
    },
    "devDependencies": {
      "babel": "npm:babel-core@^6.4.5",
      "babel-runtime": "npm:babel-runtime@^5.8.24",
      "core-js": "npm:core-js@^1.1.4"
    }
  },
  "devDependencies": {
    "babel-core": "^6.4.5",
    "babel-polyfill": "^6.3.14",
    "babel-preset-es2015": "^6.3.13",
    "del": "^2.0.2",
    "gulp": "^3.9.0",
    "gulp-sass": "^2.0.4",
    "jasmine-core": "^2.4.1",
    "jspm": "^0.16.9",
    "karma": "^0.13.19",
    "karma-babel-preprocessor": "^6.0.1",
    "karma-jasmine": "^0.3.6",
    "karma-jasmine-ajax": "^0.1.13",
    "karma-jspm": "^2.0.2",
    "karma-phantomjs-launcher": "^1.0.0",
    "karma-spec-reporter": "0.0.23",
    "phantomjs": "^2.1.3",
    "phantomjs-prebuilt": "^2.1.3",
    "systemjs-builder": "^0.14.7"
  }
}