Laravel config file of a module - laravel

Question

I need to get the keys of a file inside the config of a module. I created User module using nWidart package. This is the registerConfig function
protected function registerConfig()
{
$this->publishes([
__DIR__.'/../Config/config.php' => config_path('user.php'),
], 'config');
$this->mergeConfigFrom(
__DIR__.'/../Config/config.php', 'user'
);
}
I created a file named menu.php that returns an array with a key items, then tried this
dd(config('user::config.name'))
dd(config('user::menu.items'))
They both return null. I also tried php artisan vendor-publish of UserServiceProvider but it still returns null. How can I return the keys?
update
If I simply do: config() I get a full array of the config arrays and can see my package config file there. But the menu config file is not in there

Answer 1

In Your serviceProvider, register method.
$this->mergeConfigFrom(
__DIR__ . '/../config/master.php',
'master'
);
// Merge configs
$this->mergeConfigFrom(
__DIR__ . '/../config/slave.php',
'slave'
);
Create two files inside config folder
slave.php
<?php
return [
'menu' => [
'OP1',
'OP2',
'OP3',
'OP4',
]
];
master.php
//any other config you want to load
Run php artisan config:cache
and use
dd(config('slave.menu'));
dd(config('master.XXX'));
This will output
array:4 [▼
0 => "OP1"
1 => "OP2"
2 => "OP3"
3 => "OP4"
]

Answer 2

return [
'name' => 'Blog',
'en_name'=>'Blog',
'icon'=>'comment',
'color1'=>'EF6F6C',
'color2'=>'EF6F6C',
'route'=>'blog',
'disable' => false,
'subs'=>[
['name'=>'All Posts','route'=>'blog/list'],
['name'=>'All Categories','route'=>'category/list']
]
];