Make fp4php/functional as peer dependency

Author: klimick

README.md

@@ -4,8 +4,10 @@ Helpers for plugin authoring and static testing tool.
 
 ### Installation
 
+Package `fp4php/functional` must be installed manually.
+
 ```shell
-$ composer require --dev fp4php/psalm-toolkit
+$ composer require --dev fp4php/functional fp4php/psalm-toolkit
 $ vendor/bin/psalm-plugin enable fp4php/psalm-toolkit
 ```
 

composer.json

@@ -21,7 +21,9 @@
     },
     "require": {
         "php": "^8.0",
-        "vimeo/psalm": "^4.13",
-        "fp4php/functional": "^4.16"
+        "vimeo/psalm": "^4.13"
+    },
+    "require-dev": {
+        "fp4php/functional": "^4.18"
     }
 }

src/Toolkit/Args.php

@@ -49,13 +49,19 @@ public function getCallArgs(MethodReturnTypeProviderEvent | FunctionReturnTypePr
             $from instanceof FunctionReturnTypeProviderEvent => $from->getStatementsSource(),
         };
 
-        return ArrayList::collect($from->getCallArgs())->everyMap(
-            fn($arg) => Option::do(fn() => new CallArg(
-                node: $arg,
-                location: new CodeLocation($source, $arg),
-                type: yield $this->getArgType($from, $arg),
-            ))
-        );
+        return Option::do(function() use ($from, $source) {
+            $args = [];
+
+            foreach ($from->getCallArgs() as $arg) {
+                $args[] = new CallArg(
+                    node: $arg,
+                    location: new CodeLocation($source, $arg),
+                    type: yield $this->getArgType($from, $arg),
+                );
+            }
+
+            return ArrayList::collect($args);
+        });
     }
 
     /**