Add explicit nullable type declaration (#50922)

Author: Jubeki

Auth/Access/Gate.php

@@ -29,7 +29,7 @@ public function define($ability, $callback);
      * @param  array|null  $abilities
      * @return $this
      */
-    public function resource($name, $class, array $abilities = null);
+    public function resource($name, $class, ?array $abilities = null);
 
     /**
      * Define a policy class for a given class type.

Auth/PasswordBroker.php

@@ -48,7 +48,7 @@ interface PasswordBroker
      * @param  \Closure|null  $callback
      * @return string
      */
-    public function sendResetLink(array $credentials, Closure $callback = null);
+    public function sendResetLink(array $credentials, ?Closure $callback = null);
 
     /**
      * Reset the password for the given token.

Container/Container.php

@@ -197,7 +197,7 @@ public function resolved($abstract);
      * @param  \Closure|null  $callback
      * @return void
      */
-    public function beforeResolving($abstract, Closure $callback = null);
+    public function beforeResolving($abstract, ?Closure $callback = null);
 
     /**
      * Register a new resolving callback.
@@ -206,7 +206,7 @@ public function beforeResolving($abstract, Closure $callback = null);
      * @param  \Closure|null  $callback
      * @return void
      */
-    public function resolving($abstract, Closure $callback = null);
+    public function resolving($abstract, ?Closure $callback = null);
 
     /**
      * Register a new after resolving callback.
@@ -215,5 +215,5 @@ public function resolving($abstract, Closure $callback = null);
      * @param  \Closure|null  $callback
      * @return void
      */
-    public function afterResolving($abstract, Closure $callback = null);
+    public function afterResolving($abstract, ?Closure $callback = null);
 }

Notifications/Dispatcher.php

@@ -21,5 +21,5 @@ public function send($notifiables, $notification);
      * @param  array|null  $channels
      * @return void
      */
-    public function sendNow($notifiables, $notification, array $channels = null);
+    public function sendNow($notifiables, $notification, ?array $channels = null);
 }

Process/InvokedProcess.php

@@ -60,5 +60,5 @@ public function latestErrorOutput();
      * @param  callable|null  $output
      * @return \Illuminate\Console\Process\ProcessResult
      */
-    public function wait(callable $output = null);
+    public function wait(?callable $output = null);
 }

Process/ProcessResult.php

@@ -68,7 +68,7 @@ public function seeInErrorOutput(string $output);
      * @param  callable|null  $callback
      * @return $this
      */
-    public function throw(callable $callback = null);
+    public function throw(?callable $callback = null);
 
     /**
      * Throw an exception if the process failed and the given condition is true.
@@ -77,5 +77,5 @@ public function throw(callable $callback = null);
      * @param  callable|null  $callback
      * @return $this
      */
-    public function throwIf(bool $condition, callable $callback = null);
+    public function throwIf(bool $condition, ?callable $callback = null);
 }