Why isn't one package class within another being generated when using composer to generate package autoload?

Question

PHP

At the root of composer.json:

{
    "autoload": {
        "psr-4": {
          "VendorName\\test\\": "vendor\\VendorName\\test"
    	}
    }
}

Package in the vendors/VendorName\test folder;
There are 3 files in the root of the package:
A.php:

<?php
namespace VendorName\test;
Class A
{
  public function __construct()
        {
  }
}

B.php:

<?php
namespace VendorName\test;
use VendorName\test A as A;

Class B
{
  public function __construct()
        {
                return new A;
  }
}

And composer.json:

{
    "name": "VendorName/test",
    "description": "описание",
    "version": "версия",
    "license": "лицензия",
  "autoload": {
        "psr-4": {
            "VendorName\\test\\": ""
        }
    },
}

On creation: Throws an error:
var_dump(New VendorName\test\B);

Uncaught Error: Class 'VendorName\test\A' not found in C:\dev\testApp\vendor\VendorName\test\B.php

Answer 1

use VendorName\test A as A;
What are you trying to do here?
And what do the full paths to the A.php and B.php files look like?