Modernize phpstan config

composer.json

@@ -40,7 +40,7 @@
         "phpstan/phpstan": "^0.11.4",
         "phpstan/phpstan-strict-rules": "^0.11.0",
         "roave/security-advisories": "dev-master",
-        "roots/wordpress": "^5.1"
+        "szepeviktor/phpstan-wordpress": "dev-master"
     },
     "config": {
         "sort-packages": true
@@ -74,6 +74,8 @@
     },
     "prefer-stable": true,
     "scripts": {
+        "post-install-cmd": "PHPStan\\WordPress\\Composer\\FixWpStubs::php73Polyfill",
+        "post-update-cmd": "PHPStan\\WordPress\\Composer\\FixWpStubs::php73Polyfill",
         "phpstan:analyse": "phpstan analyse",
         "pretag": [
             "composer update",

phpstan.neon

@@ -1,15 +1,11 @@
+includes:
+    - vendor/phpstan/phpstan/conf/bleedingEdge.neon
+    - vendor/phpstan/phpstan-strict-rules/rules.neon
+    - vendor/szepeviktor/phpstan-wordpress/extension.neon
 parameters:
     level: max
+    inferPrivatePropertyTypeFromConstructor: true
     paths:
-        - %rootDir%/../../../src
-    autoload_directories:
-        - %rootDir%/../../../wordpress
-
-    autoload_files:
-        - %rootDir%/../../../wordpress/wp-includes/plugin.php
-
+        - %currentWorkingDirectory%/src/
     ignoreErrors:
-        - '#Variable property access on PHPMailer.#'
-
-includes:
-    - vendor/phpstan/phpstan-strict-rules/rules.neon
+        - '#^Variable property access on PHPMailer\.$#'