HasActiveIcon trait for Filament v4

HasActiveIcon.php

<?php

namespace App\Concerns;

use Filament\Support\Icons\Heroicon;
use BackedEnum;
use Illuminate\Contracts\Support\Htmlable;

trait HasActiveIcon
{
    public static function getActiveNavigationIcon(): string | BackedEnum | Htmlable | null
    {
        $icon = static::getNavigationIcon();

        if (is_string($icon)) {
            return str($icon)
                ->replace('heroicon-o', 'heroicon-s')
                ->replace('healthicons-o', 'healthicons-f')
                ->toString()
            ;
        }

        $name = str($icon->name)->replace('Outlined', '')->toString();

        return Heroicon::{$name};
    }
}