How can I get an inventory of all enqueued scripts and kinds?

I am making a plugin and I need to get the record of all scripts and CSS utilized by different plugins.

That is my perform:

perform crunchify_print_scripts_styles() {    
    $outcome = [];
    $outcome['scripts'] = [];
    $outcome['styles'] = [];

    // Print all loaded Scripts
    international $wp_scripts;
    foreach( $wp_scripts->queue as $script ) :
       $outcome['scripts'][] =  $wp_scripts->registered[$script]->src . ";";
    endforeach;

    // Print all loaded Types (CSS)
    international $wp_styles;
    foreach( $wp_styles->queue as $model ) :
       $outcome['styles'][] =  $wp_styles->registered[$style]->src . ";";
    endforeach;

    return $outcome;
}
add_action( 'wp_enqueue_scripts', 'crunchify_print_scripts_styles');

I need to get the returned worth inside a variable.

I attempted this:

$toto = do_action( 'crunchify_print_scripts_styles' );
var_dump( $toto );

And that is my outcome:

NULL

If I write echo inside each foreach loop, I get the proper outcomes, however find out how to retailer these values inside a variable?

[edit]

My code inside a pluginm which isn’t working too

/**
 *  Get all scripts and kinds from WordPress
 */
perform print_scripts_styles() {

    $outcome = [];
    $outcome['scripts'] = [];
    $outcome['styles'] = [];

    // Print all loaded Scripts
    international $wp_scripts;
    foreach( $wp_scripts->queue as $script ) :
        $outcome['scripts'][] =  $wp_scripts->registered[$script]->src . ";";
    endforeach;

    // Print all loaded Types (CSS)
    international $wp_styles;
    foreach( $wp_styles->queue as $model ) :
        $outcome['styles'][] =  $wp_styles->registered[$style]->src . ";";
    endforeach;

    return $outcome;
}

add_action( 'wp_head', 'wp_rest_assets_init');

/**
 * Init JSON REST API Belongings routes.
 *
 * @since 1.0.0
 */
perform wp_rest_assets_init() {


    $all_the_scripts_and_styles = print_scripts_styles();

    if ( ! outlined( 'JSON_API_VERSION' ) &&
         ! in_array( 'json-rest-api/plugin.php', get_option( 'active_plugins' ) ) ) {
             $class = new WP_REST_Assets();
             $class::$scriptsAndStyles = $all_the_scripts_and_styles;
             add_filter( 'rest_api_init', array( $class, 'register_routes' ) );
    } else {
        $class = new WP_JSON_Menus();
        add_filter( 'json_endpoints', array( $class, 'register_routes' ) );
    }
}


add_action( 'init', 'wp_rest_assets_init' );