Use config('auth.providers.user') for return type of Auth::user() and Request::user()

[caugner]

Is your feature request related to a problem? Please describe.

According to PHPDoc:

• Illuminate\Support\Facades\Auth::user() returns \Illuminate\Contracts\Auth\Authenticatable|null
• Illuminate\Http\Request::user() returns mixed

However, if providers.users.driver is set to eloquent in config/auth.php, they return the model configured in providers.users.model, which defaults to:

    'providers' => [
        'users' => [
            'driver' => 'eloquent',
            'model' => App\Models\User::class,
        ],

Describe the solution you'd like
The Psalm plugin should use that config to determine (and narrow) the return type of Auth::user() and $request->user().

Describe alternatives you've considered
(None.)

Additional context
(None.)

[mr-feek]

Huh, I thought ide-helper already provided this functionality!

[tm1000]

@mr-feek it does but the issue is that Psalm gets confused and also reads \Illuminate\Contracts\Auth\Authenticatable|null

[mr-feek]

I think I'm going to add in some dynamic analysis to stricten the return type of the config helper -- right now using the config helper can result in PossiblyInvalidCast.

We already do dynamic analysis for resolving container types -- it could also prove beneficial for resolving this issue

[tm1000]

@mr-feek sounds good to me I haven't gotten back to this because the tests are extremely complicated for this project. I only learned how they worked from the work on the 9.x release so I think I can actually get back to written a test here

[mr-feek]

Feel free to take a look at #229 and https://github.com/nunomaduro/larastan/blob/master/src/Concerns/LoadsAuthModel.php for inspiration!