Added vimeo/psalm version 3.9.3 as a dev requirement. Added a configuration file on error level 7 for now. Added its execution to our Makefile. And fixed a single issue in a phtml file.

Author: hostep

Makefile

@@ -33,6 +33,7 @@ checkquality:
 	xmllint --noout                                                                view/adminhtml/ui_component/baldwin_urldataintegritychecker_grid_catalog_product_urlpath.xml # schema validation doesn't work here since the xsd includes another xsd ..
 
 	vendor/bin/phpstan analyse
+	vendor/bin/psalm
 
 .PHONY: test
 test:

composer.json

@@ -28,7 +28,8 @@
         "phpcompatibility/php-compatibility": "^9.2",
         "phpstan/extension-installer": "^1.0",
         "phpstan/phpstan": "^0.11.12",
-        "phpunit/phpunit": "^7.5"
+        "phpunit/phpunit": "^7.5",
+        "vimeo/psalm": "^3.9"
     },
     "config": {
         "sort-packages": true