Improve types for Collection::whereInstanceOf method

Author: canvural

src/Illuminate/Collections/Enumerable.php

@@ -460,8 +460,9 @@ public function whereNotInStrict($key, $values);
     /**
      * Filter the items, removing any items that don't match the given type(s).
      *
-     * @param  class-string|array<array-key, class-string>  $type
-     * @return static
+     * @template TWhereInstanceOf
+     * @param  class-string<TWhereInstanceOf>|array<array-key, class-string<TWhereInstanceOf>>  $type
+     * @return static<TKey, TWhereInstanceOf>
      */
     public function whereInstanceOf($type);
 

src/Illuminate/Collections/Traits/EnumeratesValues.php

@@ -679,8 +679,9 @@ public function whereNotInStrict($key, $values)
     /**
      * Filter the items, removing any items that don't match the given type(s).
      *
-     * @param  class-string|array<array-key, class-string>  $type
-     * @return static
+     * @template TWhereInstanceOf
+     * @param  class-string<TWhereInstanceOf>|array<array-key, class-string<TWhereInstanceOf>>  $type
+     * @return static<TKey, TWhereInstanceOf>
      */
     public function whereInstanceOf($type)
     {

types/Support/Collection.php

@@ -463,11 +463,11 @@ function ($collection, $count) {
 assertType("Illuminate\Support\Collection<int, array{string: int}>", $collection::make([['string' => 2]])
     ->whereNotInStrict('string', [2]));
 
-assertType('Illuminate\Support\Collection<int, int|User>', $collection::make([new User, 1])
+assertType('Illuminate\Support\Collection<int, User>', $collection::make([new User, 1])
     ->whereInstanceOf(User::class));
 
-assertType('Illuminate\Support\Collection<int, int|User>', $collection::make([new User, 1])
-    ->whereInstanceOf([User::class, User::class]));
+assertType('Illuminate\Support\Collection<int, Exception|User>', $collection::make([new User, 1])
+    ->whereInstanceOf([User::class, Exception::class]));
 
 assertType('User|null', $collection->first());
 assertType('User|null', $collection->first(function ($user) {

types/Support/LazyCollection.php

@@ -359,10 +359,10 @@
 assertType("Illuminate\Support\LazyCollection<int, array{string: int}>", $collection::make([['string' => 2]])
     ->whereNotInStrict('string', [2]));
 
-assertType('Illuminate\Support\LazyCollection<int, int|User>', $collection::make([new User, 1])
+assertType('Illuminate\Support\LazyCollection<int, User>', $collection::make([new User, 1])
     ->whereInstanceOf(User::class));
 
-assertType('Illuminate\Support\LazyCollection<int, int|User>', $collection::make([new User, 1])
+assertType('Illuminate\Support\LazyCollection<int, User>', $collection::make([new User, 1])
     ->whereInstanceOf([User::class, User::class]));
 
 assertType('User|null', $collection->first());