Add stubs for WP_Widget_Factory (#221)

functionMap.php

@@ -193,4 +193,7 @@
     'WP_Translations::translate' => ['($singular is null ? null : string)'],
     'WP_Translations::translate_plural' => ['($singular is null ? null : ($plural is null ? T : string))', '@phpstan-template T' => 'of string|null', 'singular' => 'T', 'count' => 'int'],
     'WP_Query' => [null, '@phpstan-property-read bool $query_vars_changed' => '', '@phpstan-property-read bool|string $query_vars_hash' => '', '@phpstan-method void init_query_flags()' => ''],
+    'WP_Widget_Factory::$widgets' => [null, '@phpstan-var' => 'array<string, \WP_Widget>'],
+    'WP_Widget_Factory::register' => [null, 'widget' => 'class-string<\WP_Widget>|\WP_Widget'],
+    'WP_Widget_Factory::unregister' => [null, 'widget' => 'class-string<\WP_Widget>|\WP_Widget'],
 ];

tests/TypeInferenceTest.php

@@ -60,6 +60,7 @@ public function dataFileAsserts(): iterable
         yield from $this->gatherAssertTypes(__DIR__ . '/data/wp_tag_cloud.php');
         yield from $this->gatherAssertTypes(__DIR__ . '/data/wp_theme.php');
         yield from $this->gatherAssertTypes(__DIR__ . '/data/wp_translations.php');
+        yield from $this->gatherAssertTypes(__DIR__ . '/data/wp_widget_factory.php');
         yield from $this->gatherAssertTypes(__DIR__ . '/data/wpdb.php');
     }
 

tests/data/wp_widget_factory.php

@@ -0,0 +1,13 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PhpStubs\WordPress\Core\Tests;
+
+use WP_Widget_Factory;
+
+use function PHPStan\Testing\assertType;
+
+$factory = new WP_Widget_Factory();
+
+assertType('array<string, WP_Widget>', $factory->widgets);

wordpress-stubs.php

@@ -56518,6 +56518,7 @@ class WP_Widget_Factory
          *
          * @since 2.8.0
          * @var array
+         * @phpstan-var array<string, \WP_Widget>
          */
         public $widgets = array();
         /**
@@ -56547,6 +56548,7 @@ public function WP_Widget_Factory()
          *              instead of simply a `WP_Widget` subclass name.
          *
          * @param string|WP_Widget $widget Either the name of a `WP_Widget` subclass or an instance of a `WP_Widget` subclass.
+         * @phpstan-param class-string<\WP_Widget>|\WP_Widget $widget
          */
         public function register($widget)
         {
@@ -56559,6 +56561,7 @@ public function register($widget)
          *              instead of simply a `WP_Widget` subclass name.
          *
          * @param string|WP_Widget $widget Either the name of a `WP_Widget` subclass or an instance of a `WP_Widget` subclass.
+         * @phpstan-param class-string<\WP_Widget>|\WP_Widget $widget
          */
         public function unregister($widget)
         {