[10.x] Uses PHP Native Type Declarations 🐘 (#6010)

* Adds basic typing around method's arguments and return types

* Adds missing `closure` type

* Adds typing on tests

* Fixes `RedirectIfAuthenticated`

* Fixes `Authenticate`

* Improves `RedirectIfAuthenticated` types

* Fixes user factory `unverified` return type

app/Http/Middleware/Authenticate.php

@@ -3,19 +3,15 @@
 namespace App\Http\Middleware;
 
 use Illuminate\Auth\Middleware\Authenticate as Middleware;
+use Illuminate\Http\Request;
 
 class Authenticate extends Middleware
 {
     /**
      * Get the path the user should be redirected to when they are not authenticated.
-     *
-     * @param  \Illuminate\Http\Request  $request
-     * @return string|null
      */
-    protected function redirectTo($request)
+    protected function redirectTo(Request $request): string|null
     {
-        if (! $request->expectsJson()) {
-            return route('login');
-        }
+        return $request->expectsJson() ? null : route('login');
     }
 }

app/Http/Middleware/RedirectIfAuthenticated.php

@@ -6,18 +6,16 @@ use App\Providers\RouteServiceProvider;
 use Closure;
 use Illuminate\Http\Request;
 use Illuminate\Support\Facades\Auth;
+use Symfony\Component\HttpFoundation\Response;
 
 class RedirectIfAuthenticated
 {
     /**
      * Handle an incoming request.
      *
-     * @param  \Illuminate\Http\Request  $request
-     * @param  \Closure(\Illuminate\Http\Request): (\Illuminate\Http\Response|\Illuminate\Http\RedirectResponse)  $next
-     * @param  string|null  ...$guards
-     * @return \Illuminate\Http\Response|\Illuminate\Http\RedirectResponse
+     * @param  \Closure(\Illuminate\Http\Request): (\Symfony\Component\HttpFoundation\Response)  $next
      */
-    public function handle(Request $request, Closure $next, ...$guards)
+    public function handle(Request $request, Closure $next, string ...$guards): Response
     {
         $guards = empty($guards) ? [null] : $guards;
 

app/Http/Middleware/TrustHosts.php

@@ -11,7 +11,7 @@ class TrustHosts extends Middleware
      *
      * @return array<int, string|null>
      */
-    public function hosts()
+    public function hosts(): array
     {
         return [
             $this->allSubdomainsOfApplicationUrl(),