Use PHPStan instead of Psalm

Author: sebastianbergmann

.github/workflows/ci.yml

@@ -31,8 +31,8 @@ jobs:
       - name: Run PHP-CS-Fixer
         run: ./tools/php-cs-fixer fix --dry-run --show-progress=dots --using-cache=no --verbose
 
-  type-checker:
-    name: Type Checker
+  static-analysis:
+    name: Static Analysis
 
     runs-on: ubuntu-latest
 
@@ -49,8 +49,8 @@ jobs:
       - name: Install dependencies with Composer
         run: ./tools/composer update --no-interaction --no-ansi --no-progress
 
-      - name: Run Psalm
-        run: ./tools/psalm --config=.psalm/config.xml --no-progress --shepherd --show-info=false --stats
+      - name: Run PHPStan
+        run: ./tools/phpstan analyse --no-progress --error-format=github
 
   tests:
     name: Tests

.phive/phars.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phive xmlns="https://phar.io/phive">
   <phar name="php-cs-fixer" version="^3.57" installed="3.57.1" location="./tools/php-cs-fixer" copy="true"/>
-  <phar name="psalm" version="^5.24" installed="5.24.0" location="./tools/psalm" copy="true"/>
   <phar name="composer" version="^2.7" installed="2.7.6" location="./tools/composer" copy="true"/>
   <phar name="infection" version="^0.28" installed="0.28.1" location="./tools/infection" copy="true"/>
+  <phar name="phpstan" version="^1.11.1" installed="1.11.1" location="./tools/phpstan" copy="true"/>
 </phive>

.psalm/baseline.xml

@@ -1,6 +1,5 @@
 [![Latest Stable Version](https://poser.pugx.org/sebastian/cli-parser/v/stable.png)](https://packagist.org/packages/sebastian/cli-parser)
 [![CI Status](https://github.com/sebastianbergmann/cli-parser/workflows/CI/badge.svg)](https://github.com/sebastianbergmann/cli-parser/actions)
-[![Type Coverage](https://shepherd.dev/github/sebastianbergmann/cli-parser/coverage.svg)](https://shepherd.dev/github/sebastianbergmann/cli-parser)
 [![codecov](https://codecov.io/gh/sebastianbergmann/cli-parser/branch/main/graph/badge.svg)](https://codecov.io/gh/sebastianbergmann/cli-parser)
 
 # sebastian/cli-parser

.psalm/config.xml

@@ -0,0 +1,4 @@
+parameters:
+    level: 9
+    paths:
+        - src