Migrate to PHPStan

Author: tvdijen

.github/workflows/php.yml

@@ -50,10 +50,9 @@ jobs:
         uses: shivammathur/setup-php@v2
         with:
           # Should be the higest supported version, so we can use the newest tools
-          php-version: '8.3'
-          tools: composer, composer-require-checker, composer-unused, phpcs, psalm
-          # optional performance gain for psalm: opcache
-          extensions: ctype, date, dom, fileinfo, filter, hash, intl, mbstring, opcache, openssl, pcre, pdo, posix, spl, xml
+          php-version: '8.4'
+          tools: composer, composer-require-checker, composer-unused, phpcs, phpstan
+          extensions: ctype, date, dom, fileinfo, filter, hash, intl, mbstring, openssl, pcre, pdo, posix, spl, xml
 
       - name: Setup problem matchers for PHP
         run: echo "::add-matcher::${{ runner.tool_cache }}/php.json"
@@ -85,27 +84,13 @@ jobs:
       - name: PHP Code Sniffer
         run: phpcs
 
-      - name: Psalm
-        continue-on-error: true
-        run: |
-          psalm -c psalm.xml \
-          --show-info=true \
-          --shepherd \
-          --php-version=${{ steps.setup-php.outputs.php-version }}
-
-      - name: Psalm (testsuite)
+      - name: PHPStan
         run: |
-          psalm -c psalm-dev.xml \
-          --show-info=true \
-          --shepherd \
-          --php-version=${{ steps.setup-php.outputs.php-version }}
+          vendor/bin/phpstan analyze -c phpstan.neon --debug
 
-      - name: Psalter
+      - name: PHPStan (testsuite)
         run: |
-          psalm --alter \
-          --issues=UnnecessaryVarAnnotation \
-          --dry-run \
-          --php-version=${{ steps.setup-php.outputs.php-version }}
+          vendor/bin/phpstan analyze -c phpstan-dev.neon --debug
 
   security:
     name: Security checks
@@ -156,7 +141,7 @@ jobs:
       fail-fast: false
       matrix:
         operating-system: [ubuntu-latest]
-        php-versions: ['8.1', '8.2', '8.3']
+        php-versions: ['8.1', '8.2', '8.3', '8.4']
 
     steps:
       - name: Setup PHP, with composer and extensions
@@ -196,15 +181,15 @@ jobs:
         run: composer install --no-progress --prefer-dist --optimize-autoloader
 
       - name: Run unit tests with coverage
-        if: ${{ matrix.php-versions == '8.3' }}
+        if: ${{ matrix.php-versions == '8.4' }}
         run: vendor/bin/phpunit
 
       - name: Run unit tests (no coverage)
-        if: ${{ matrix.php-versions != '8.3' }}
+        if: ${{ matrix.php-versions != '8.4' }}
         run: vendor/bin/phpunit --no-coverage
 
       - name: Save coverage data
-        if: ${{ matrix.php-versions == '8.3' }}
+        if: ${{ matrix.php-versions == '8.4' }}
         uses: actions/upload-artifact@v4
         with:
           name: coverage-data
@@ -218,7 +203,7 @@ jobs:
       fail-fast: true
       matrix:
         operating-system: [windows-latest]
-        php-versions: ['8.1', '8.2', '8.3']
+        php-versions: ['8.1', '8.2', '8.3', '8.4']
 
     steps:
       - name: Setup PHP, with composer and extensions

phpstan-dev.neon

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

phpstan.neon

@@ -0,0 +1,6 @@
+parameters:
+  level: 5
+  paths:
+    - src
+includes:
+  - phpstan-baseline.neon