Can't see the content of files parsed by browserify in coverage report

When I run my tests, I can't see the content of files parsed by browserify:

Content showed in Coverage report:

> 1 | 1× | typeof require === "function" && require("/home/aurum/projects/astreav2/src/main/angular/components/movements/movementsList/movementsList.controller.js");

My karma.conf.js:

`
module.exports = function(config) {
config.set({

basePath: './',
frameworks: ['browserify', 'jasmine'],

files: [
'./bower_components/angular/angular.js',
'./bower_components/angular-mocks/angular-mocks.js',
'./bower_components/jquery/dist/jquery.js',
'./bower_components/jquery-ui/jquery-ui.js',
'./bower_components/qtip2/jquery.qtip.js',
'./bower_components/jcrop/js/jquery.color.js',
'./bower_components/jcrop/js/jquery.Jcrop.js',
'./bower_components/ScrollToFixed/jquery-scrolltofixed.js',
'./bower_components/jquery-autosize/dist/autosize.js',
'./bower_components/angular-cookies/angular-cookies.js',
'./bower_components/angular-route/angular-route.js',
'./bower_components/angular-ui-router/release/angular-ui-router.js',
'./bower_components/angular-translate/angular-translate.js',
'./bower_components/angular-translate-loader-static-files/angular-translate-loader-static-files.js',
'./bower_components/angular-translate-storage-cookie/angular-translate-storage-cookie.js',
'./bower_components/angular-translate-storage-local/angular-translate-storage-local.js',
'./bower_components/angular-dynamic-locale/dist/tmhDynamicLocale.js',
'./bower_components/moment/moment.js',
'./bower_components/moment-business/dist/moment-business.js',
'./bower_components/angular-moment/angular-moment.js',
'./bower_components/moment-timezone/builds/moment-timezone-with-data.js',
'./bower_components/ng-file-upload/angular-file-upload.js',
'./bower_components/ng-file-upload/angular-file-upload-shim.js',
'./bower_components/angular-once/once.js',
'./bower_components/angular-bootstrap/ui-bootstrap.js',
'./bower_components/angular-bootstrap/ui-bootstrap-tpls.js',
'./bower_components/angular-dragdrop/src/angular-dragdrop.js',
'./bower_components/fullcalendar/dist/fullcalendar.js',
'./bower_components/angular-ui-calendar/src/calendar.js',
'./bower_components/textAngular/dist/textAngular-rangy.min.js',
'./bower_components/textAngular/dist/textAngular.min.js',
'./bower_components/spectrum/spectrum.js',
'./bower_components/angular-inview/angular-inview.js',
'./bower_components/angular-credit-cards/release/angular-credit-cards.js',
'./bower_components/file-saver/FileSaver.js',
'./bower_components/js-xlsx/dist/xlsx.core.min.js',
'./bower_components/lodash/dist/lodash.underscore.js',
'./bower_components/ar-dropdown-multiselect/js/ar-dropdown-multiselect.js',
'./bower_components/aurum-select/dist/aurum-select.min.js',
'./bower_components/ngprogress/build/ngprogress.js',
'./bower_components/ngMask/dist/ngMask.js',
'./bower_components/angular-resource/angular-resource.js',
'./node_modules/react/dist/react.min.js',
'./node_modules/jasmine-jquery/lib/jasmine-jquery.js',
'./node_modules/react-dom/dist/react-dom.min.js',
'./node_modules/ngreact/ngReact.js',
'./node_modules/ngclipboard/dist/ngclipboard.min.js',
'./src/main/vendor/sortable.js',
'./src/main/assets/js/frontend.js',
'./src/main/assets/js/astrea-textAngular-sanitize.js',
'./src/main/assets/js/kissmetrics.js',
'./src/main/assets/js/control.js',
'./src/main/angular/utils/**/*.js',
'./src/main/angular/controllers/main/main.js',
'./src/main/angular/services/**/*.js',
'./src/main/angular/components/**/*.js',
'./src/main/angular/directives/**/*.js',
'./src/main/angular/interceptors/**/*.js',
'./src/main/angular/controllers/components/**/*.js',
'./src/main/angular/controllers/main/activitytemplate/**/*.js',
'./src/main/angular/controllers/main/admin/**/*.js',
'./src/main/angular/controllers/main/alerts/**/*.js',
'./src/main/angular/controllers/main/billing/**/*.js',
'./src/main/angular/controllers/main/calendarNew/**/*.js',
'./src/main/angular/controllers/main/contacts/**/*.js',
'./src/main/angular/controllers/main/deadline/**/*.js',
'./src/main/angular/controllers/main/hearing/**/*.js',
'./src/main/angular/controllers/main/documents/**/*.js',
'./src/main/angular/controllers/main/financial/**/*.js',
'./src/main/angular/controllers/main/folders/**/*.js',
'./src/main/angular/controllers/main/notification/**/*.js',
'./src/main/angular/controllers/main/planNew/**/*.js',
'./src/main/angular/controllers/main/search/**/*.js',
'./src/main/angular/controllers/main/tags/**/*.js',
'./src/main/angular/controllers/main/support/**/*.js',
'./src/main/angular/controllers/main/user/**/*.js',
'./src/main/angular/controllers/main/workspace/**/*.js',
'./src/main/angular/controllers/modals/**/*.js',
'./src/main/angular/controllers/public/**/*.js',
'./src/main/angular/controllers/viewer/**/*.js',
'./src/main/angular/controllers/widgets/**/*.js',
'./src/main/angular/controllers/exports/**/*.js',
'./src/main/angular/controllers/reports/**/*.js',
'./src/main/assets/languages/**/*.js',
'http://apis.google.com/js/client.js',
'./src/test/js/**/*.spec.js'
],

exclude: [
],

preprocessors: {
'src/main/angular/**/*.js': ['coverage'],
'./src/main/angular/components/**/*.js': 'browserify'
},

browserify: {
debug: true,
transform: [
['babelify', {presets: ["es2015"], plugins: ['transform-html-import-to-string']}]
]
},

coverageReporter: {
type : 'html',
dir : 'coverage/'
},

reporters: ['progress', 'coverage'],
port: 9876,
colors: true,
logLevel: config.LOG_INFO,
autoWatch: true,
browsers: ['Chrome'],
singleRun: false,
concurrency: Infinity
})
}`

Note: Only the files in the folder 'src/main/angular/components' are using es6, and this files have the problem.
Any idea how to solve this?

Start with the reported karma.conf.js preprocessors and the interaction between the coverage and browserify entries for src/main/angular/components/**/*.js. Reproduce the HTML coverage report with the shown configuration and compare it with the non-ES6 files; done means the parsed component files show their source content and coverage rather than only the require statement.

Written by the indexing model from the issue text.