Replace psalm with phpstan

Author: tvdijen

.github/workflows/php.yml

@@ -86,26 +86,13 @@ jobs:
       - name: PHP Code Sniffer
         run: phpcs
 
-      - name: Psalm
+      - name: PHPStan
         run: |
-          psalm -c psalm.xml \
-          --show-info=true \
-          --shepherd \
-          --php-version=${{ steps.setup-php.outputs.php-version }}
+          vendor/bin/phpstan analyze -c phpstan.neon
 
-      - name: Psalm (testsuite)
+      - name: PHPStan (testsuite)
         run: |
-          psalm -c psalm-dev.xml \
-          --show-info=true \
-          --shepherd \
-          --php-version=${{ steps.setup-php.outputs.php-version }}
-
-      - name: Psalter
-        run: |
-          psalm --alter \
-          --issues=UnnecessaryVarAnnotation \
-          --dry-run \
-          --php-version=${{ steps.setup-php.outputs.php-version }}
+          vendor/bin/phpstan analyze -c phpstan-dev.neon
 
   security:
     name: Security checks

phpstan-dev.neon

@@ -0,0 +1,7 @@
+parameters:
+  level: 5
+  paths:
+    - tests
+
+includes:
+  - phpstan-dev-baseline.neon

phpstan.neon

@@ -0,0 +1,7 @@
+parameters:
+  level: 6
+  paths:
+    - src
+
+includes:
+  - phpstan-baseline.neon