nshop/packages/Webkul/Shipping/src/Providers/ShippingServiceProvider.php

<?php

namespace Webkul\Shipping\Providers;

use Illuminate\Support\ServiceProvider;

class ShippingServiceProvider extends ServiceProvider
{
    /**
     * Register services.
     *
     * @return void
     */
    public function register()
    {
        include __DIR__.'/../Http/helpers.php';

        $this->registerConfig();
    }

    /**
     * Bootstrap services.
     *
     * @return void
     */
    public function boot()
    {
        $this->loadMigrationsFrom(
            dirname(__DIR__).'/Database/Migrations'
        );
    }

    /**
     * Register package config.
     *
     * @return void
     */
    protected function registerConfig()
    {
        $this->mergeConfigFrom(
            dirname(__DIR__).'/Config/carriers.php', 'carriers'
        );
        $this->mergeConfigFrom(
            dirname(__DIR__) . '/Config/system.php', 'core'
        );
    }
}