PluginServiceProvider.php

<?php

namespace App\Providers;

use Illuminate\Support\Str;
use App\Services\PluginManager;
use Illuminate\Support\ServiceProvider;

class PluginServiceProvider extends ServiceProvider
{
    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot(PluginManager $plugins)
    {
        $bootstrappers = $plugins->getEnabledBootstrappers();

        foreach ($bootstrappers as $file) {
            $bootstrapper = require $file;
            // call closure using service container
            $this->app->call($bootstrapper);
        }
    }

    /**
     * Register any application services.
     *
     * @return void
     */
    public function register()
    {
        $this->app->singleton('plugins', PluginManager::class);
    }

}