karma-coverage.conf.js

/* global module */
module.exports = function (config) {
    'use strict';
    config.set({
        autoWatch: false,
        singleRun: true,

        frameworks: ['jspm', 'jasmine'],

        files: [
            'node_modules/karma-babel-preprocessor/node_modules/babel-core/browser-polyfill.js',
            {pattern: 'app/assets/images/**/*.png', watched: false, included: false, served: true},
        ],

        jspm: {
            config: 'app/jspm-config/config-karma.js',
            loadFiles: [
                'build/coverage/js/**/*.js'
            ]
        },

        browsers: ['PhantomJS'],
        preprocessors: {
            'build/coverage/js/**/!(*spec).js': [ 'babel', 'sourcemap', 'coverage']
        },

        babelPreprocessor: {
            options: {
                sourceMap: 'inline',
                blacklist: ['useStrict']
            },
            sourceFileName: function(file) {
                return file.originalPath;
            }
        },
        proxies:  {
            '/assets/images/': '/base/app/assets/images/'
        },
        reporters: ['coverage', 'dots'],

        coverageReporter: {
            instrumenters: {isparta: require('isparta')},
            instrumenter: {
                'build/test/js/**/*.js': 'isparta'
            },

            reporters: [
                {
                    type: 'text-summary',
                    subdir: normalizationBrowserName
                },
                {
                    type: 'html',
                    dir: 'coverage/',
                    subdir: normalizationBrowserName
                }
            ]
        }
    });

    function normalizationBrowserName(browser) {
        return browser.toLowerCase().split(/[ /-]/)[0];
    }
};