Karma configuration for testing Angular with ES2015

karma.conf.js

var browsers = ['Chrome'];

var options = {
    basePath: '',
    browsers: browsers,
    frameworks: ['browserify', 'jasmine'],
    autoWatch: true,
    singleRun: true,
    preprocessors: {
        'src/asset/javascript/**/*.js': ['babel', 'browserify'],
        'src/asset/javascript/**/*.html': ['ng-html2js']
    },
    files: [
        'src/asset/javascript/app.module.js',
        'node_modules/angular-mocks/angular-mocks.js',
        'src/asset/javascript/**/*.spec.js',
        'src/asset/javascript/**/*.html'
    ],
    ngHtml2JsPreprocessor: {
        moduleName: 'templates'
    },
    browserify: {
        debug: true,
        transform: [
            require('browserify-istanbul')({
                instrumenter: require('isparta'),
                ignore: ['**/node_modules/**', '**/*.spec.js']
            }),
            'babelify',
            'browserify-ngannotate'
        ]
    },
    reporters: [
    	'progress',
        'coverage'
    ]
};

module.exports = function(config) {
    config.set(options);
};