Merge pull request #4 from reactphp-parallel/1.x-add-functions-stub

Add functions stub

Author: WyriHaximus

etc/qa/phpstan.neon

@@ -9,6 +9,7 @@ parameters:
 	stubFiles:
 		- ../../stubs/Event.stub
 		- ../../stubs/Future.stub
+		- ../../stubs/functions.stub
 		- ../../stubs/Channel.stub
 
 includes:

stubs/functions.stub

@@ -0,0 +1,13 @@
+<?php
+
+namespace parallel;
+
+use Closure;
+
+/**
+ * @param (Closure():T)|(Closure():void) $task
+ * @param array<mixed>                   $argv
+ * @template T
+ * @return ($task is (Closure():T) ? Future<T> : null)
+ */
+function run(Closure $task, array $argv = null): ?Future {}