Yii2 BootstrapAsset is not loading bootstrap.js

Question

yii\bootstrap\BootstrapAsset is not loading bootstrap.js, and such elements as "modal" and others are not working.

class AppAsset extends AssetBundle {
    public $basePath = '@webroot';

    public $baseUrl = '@web';

    public $css = [    
        /* theme */
        'css/site.css',

        /* jasny bootstrap */
        'public/jasny/css/jasny-bootstrap.min.css',

        /* font awesome */
        'public/font-awesome-430/css/font-awesome.min.css',

        /* font roboto */
        'public/fonts/roboto/roboto.css',

        /* Data Tables */
        'public/datatables/extensions/integration/bootstrap/3/dataTables.bootstrap.css',  
    ];

    public $js = [    
        /* jasny bootstrap  */
        'public/jasny/js/jasny-bootstrap.min.js',

        /* Data Tables  */
        'public/datatables/datajs.js',
        'public/datatables/media/js/jquery.dataTables.min.js',
        'public/datatables/extensions/integration/bootstrap/3/dataTables.bootstrap.js',               
    ];

    public $depends = [
        'yii\web\YiiAsset',
        'yii\bootstrap\BootstrapAsset',
    ];    
}

Here is screen of libraries, bootstrap.js is missing there.

Answer 1

If you look at the content of BootstrapAsset bundle, you will see that there is no bootstrap.js:

class BootstrapAsset extends AssetBundle
{
    public $sourcePath = '@bower/bootstrap/dist';
    public $css = [
        'css/bootstrap.css',
    ];
}

For bootstrap.js another asset bundle exists and it's called BootstrapPluginAsset:

class BootstrapPluginAsset extends AssetBundle
{
    public $sourcePath = '@bower/bootstrap/dist';
    public $js = [
        'js/bootstrap.js',
    ];
    public $depends = [
        'yii\web\JqueryAsset',
        'yii\bootstrap\BootstrapAsset',
    ];
}

The full class name with namespace is: yii\bootstrap\BootstrapPluginAsset.

It's included automatically when you use js dependent bootstrap widgets such as yii\bootstrap\Modal, etc.