How to add a badge() in 'Registering custom navigation items"?

[devhoussam1998]

https://filamentphp.com/docs/3.x/panels/navigation#registering-custom-navigation-items-1

use App\Filament\Pages\Settings;
use App\Filament\Resources\UserResource;
use Filament\Navigation\NavigationBuilder;
use Filament\Navigation\NavigationItem;
use Filament\Pages\Dashboard;
use Filament\Panel;
 
public function panel(Panel $panel): Panel
{
    return $panel
        // ...
        ->navigation(function (NavigationBuilder $builder): NavigationBuilder {
            return $builder->items([
                NavigationItem::make('Dashboard')
                    ->icon('heroicon-o-home')
                    ->isActiveWhen(fn (): bool => request()->routeIs('filament.admin.pages.dashboard'))
                    ->url(fn (): string => Dashboard::getUrl()),
                ...UserResource::getNavigationItems(),
                ...Settings::getNavigationItems(),
            ]);
        });
}

[dissto]

It's literally on the page you linked yourself. For a given item you could use ->badge(100)