How to handle post requests in laravel with a request to the controller?

Question

Laravel

I am implementing react frontend and I need to implement api registration. I set up route but I can't figure out how to access the controller that registers the user.
My implementation

Route::post('/registration', [
    'as' => Request::class, 'uses' => '[email protected]'
]);

And tried to go like this

Route::post('/registration', function(Request $request){
// И тут я встал в ступор
});

That is, I send objects to these routes, well, json, but I still don’t understand how to access the controller.
In the first case, I write Class App\Http\Controllers\RegisterController does not exist
Although it exists

Answer 1

Route::post('/registration', 'Auth\[email protected]');

And in RegisterController you need to remove that the resulting array type and change it to Request, because json is coming