Piwik\AssetManager::compileCustomJs PHP Method

    public static function compileCustomJs($files)
    {
        $mergedAsset = new InMemoryUIAsset();
        $fetcher = new StaticUIAssetFetcher($files, $priorityOrder = array(), $theme = null);
        $cacheBuster = UIAssetCacheBuster::getInstance();
        $assetMerger = new JScriptUIAssetMerger($mergedAsset, $fetcher, $cacheBuster);
        $assetMerger->generateFile();
        return $mergedAsset->getContent();
    }

 /**
  * Return the base.less compiled to css
  *
  * @return string
  */
 public function getUpdaterJs()
 {
     Common::sendHeader('Content-Type: application/javascript; charset=UTF-8');
     Common::sendHeader('Cache-Control: max-age=' . 60 * 60);
     $files = array('libs/bower_components/jquery/dist/jquery.min.js', 'libs/bower_components/jquery-ui/ui/minified/jquery-ui.min.js', 'libs/bower_components/materialize/dist/js/materialize.min.js', 'plugins/Morpheus/javascripts/piwikHelper.js', 'plugins/CoreHome/javascripts/donate.js', 'plugins/CoreUpdater/javascripts/updateLayout.js', 'libs/bower_components/angular/angular.min.js', 'libs/bower_components/angular-sanitize/angular-sanitize.js', 'libs/bower_components/angular-animate/angular-animate.js', 'libs/bower_components/angular-cookies/angular-cookies.js', 'libs/bower_components/ngDialog/js/ngDialog.min.js', 'plugins/CoreHome/angularjs/common/services/service.module.js', 'plugins/CoreHome/angularjs/common/filters/filter.module.js', 'plugins/CoreHome/angularjs/common/filters/translate.js', 'plugins/CoreHome/angularjs/common/directives/directive.module.js', 'plugins/CoreHome/angularjs/common/directives/focus-anywhere-but-here.js', 'plugins/CoreHome/angularjs/piwikApp.config.js', 'plugins/CoreHome/angularjs/piwikApp.js', 'plugins/Installation/javascripts/installation.js');
     return AssetManager::compileCustomJs($files);
 }