Illuminate\Console\Command not found when developing laravel 5.8 package - php

Question

I am developing a package for Laravel 5.8. When I try to create a console command that extends Illuminate\Console\Command then "composer dump-autoload" fails with error message:
c:\Program Files (x86)\Ampps\www\ptest>composer dump-autoload
Generating optimized autoload files> Illuminate\Foundation\ComposerScripts::postAutoloadDump
> #php artisan package:discover --ansi
ReflectionException : Class TestVendor\TestPackage\TestCommand does not exist
at C:\Program Files (x86)\Ampps\www\ptest\vendor\laravel\framework\src\Illuminate\Container\Container.php:790
786| if ($concrete instanceof Closure) {
787| return $concrete($this, $this->getLastParameterOverride());
788| }
789|
> 790| $reflector = new ReflectionClass($concrete);
791|
792| // If the type is not instantiable, the developer is attempting to resolve
793| // an abstract type such as an Interface or Abstract Class and there is
794| // no binding registered for the abstractions so we need to bail out.
Exception trace:
1 ReflectionClass::__construct("TestVendor\TestPackage\TestCommand")
C:\Program Files (x86)\Ampps\www\ptest\vendor\laravel\framework\src\Illuminate\Container\Container.php:790
2 Illuminate\Container\Container::build("TestVendor\TestPackage\TestCommand")
C:\Program Files (x86)\Ampps\www\ptest\vendor\laravel\framework\src\Illuminate\Container\Container.php:667
I have tried to create the package by hand inside of C:\Program Files (x86)\Ampps\www\ptest\packages folder and I tried to use the packager https://github.com/Jeroen-G/laravel-packager but the result is identical in both cases.
TestCommand.php
<?php
namespace TestVendor\TestPackage;
use Illuminate\Console\Command;
class TestCommand extends Command {
protected $signature = 'test:hello';
protected $description = 'say hello';
public function __construct()
{
parent::__construct();
}
public function handle()
{
$this->info("hello!");
}
}
TestServiceProvider.php
<?php
namespace TestVendor\TestPackage;
use Illuminate\Support\ServiceProvider;
class TestServiceProvider extends ServiceProvider
{
public function boot()
{
if ($this->app->runningInConsole()) {
$this->bootForConsole();
}
}
public function register()
{
$this->mergeConfigFrom(__DIR__.'/../config/testpackage.php', 'testpackage');
$this->app->singleton('testpackage', function ($app) {
return new TestPackage;
});
}
public function provides()
{
return ['testpackage'];
}
protected function bootForConsole()
{
// Registering package commands.
$this->commands([TestCommand::class]);
}
}
When I execute the TestCommand.php file directly from command line it fails with the error message
PHP Fatal error: Class 'Illuminate\Console\Command' not found
I have checked other working packages inside "Vendor" folder and all have the same structure as my package. It seems as if autoloading does not work properly.

Answer 1

The "console" folder was outside of "src" folder. Therefore it could not be discovered.

Answer 2

remove vendor and node_modules folder
then run following commands
composer update
npm install
it should work fine.