Increase PHPStan level

composer.json

@@ -18,6 +18,7 @@
     },
     "require-dev": {
         "barryvdh/laravel-ide-helper": "^3.0",
+        "larastan/larastan": "^2.9",
         "orchestra/testbench": "^9.0",
         "phpstan/phpstan": "^1.10",
         "phpunit/phpunit": "^11.0"

phpstan.neon.dist

@@ -1,5 +1,7 @@
+includes:
+    - ./vendor/larastan/larastan/extension.neon
 parameters:
-    level: 0
+    level: 1
     paths:
         - src
         - tests

src/Relations/BelongsToThrough.php

@@ -59,8 +59,9 @@ class BelongsToThrough extends Relation
      * @param string $prefix
      * @param array $foreignKeyLookup
      * @param array $localKeyLookup
-     *
      * @return void
+     *
+     * @phpstan-ignore constructor.unusedParameter($localKey)
      */
     public function __construct(
         Builder $query,

tests/Models/Comment.php

@@ -2,18 +2,19 @@
 
 namespace Tests\Models;
 
+use Znck\Eloquent\Relations\BelongsToThrough;
 use Znck\Eloquent\Traits\HasTableAlias;
 
 class Comment extends Model
 {
     use HasTableAlias;
 
-    public function country()
+    public function country(): BelongsToThrough
     {
         return $this->belongsToThrough(Country::class, [User::class, Post::class])->withDefault();
     }
 
-    public function countryWithCustomForeignKeys()
+    public function countryWithCustomForeignKeys(): BelongsToThrough
     {
         return $this->belongsToThrough(
             Country::class,
@@ -24,22 +25,22 @@ public function countryWithCustomForeignKeys()
         );
     }
 
-    public function countryWithTrashedUser()
+    public function countryWithTrashedUser(): BelongsToThrough
     {
         return $this->country()->withTrashed(['users.deleted_at']);
     }
 
-    public function countryWithPrefix()
+    public function countryWithPrefix(): BelongsToThrough
     {
         return $this->belongsToThrough(Country::class, [User::class, Post::class], null, 'custom_');
     }
 
-    public function grandparent()
+    public function grandparent(): BelongsToThrough
     {
         return $this->belongsToThrough(self::class, self::class.' as alias', null, '', [self::class => 'parent_id']);
     }
 
-    public function user()
+    public function user(): BelongsToThrough
     {
         return $this->belongsToThrough(User::class, Post::class);
     }