Update static analyzers (#7)

Author: Nyholm

.github/workflows/static.yml

@@ -1,34 +1,82 @@
 name: Static analysis
 
 on:
-  push:
-    branches:
-      - master
-  pull_request:
+  pull_request: ~
 
 jobs:
   phpstan:
     name: PHPStan
-    runs-on: ubuntu-latest
-    
+    runs-on: ubuntu-20.04
+
     steps:
       - name: Checkout code
         uses: actions/checkout@v2
 
-      - name: PHPStan
-        uses: docker://oskarstark/phpstan-ga
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
         with:
-          args: analyze --no-progress
+          php-version: 8.0
+          coverage: none
+          tools: phpstan:0.12.88, cs2pr
+
+      - name: Download dependencies
+        uses: ramsey/composer-install@v1
+
+      - name: PHPStan
+        run: phpstan analyze --no-progress --error-format=checkstyle | cs2pr
 
   php-cs-fixer:
     name: PHP-CS-Fixer
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
 
     steps:
       - name: Checkout code
         uses: actions/checkout@v2
 
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: 8.0
+          coverage: none
+          tools: php-cs-fixer:2.19.0, cs2pr
+
       - name: PHP-CS-Fixer
-        uses: docker://oskarstark/php-cs-fixer-ga
+        run: php-cs-fixer fix --dry-run --format=checkstyle | cs2pr
+
+  psalm:
+    name: Psalm
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
         with:
-          args: --dry-run --diff-format udiff
+          php-version: 8.0
+          coverage: none
+          tools: vimeo/psalm:4.7.2
+
+      - name: Download dependencies
+        uses: ramsey/composer-install@v1
+
+      - name: Psalm
+        run: psalm --no-progress --output-format=github
+
+  composer-normalize:
+    name: Composer Normalize
+    runs-on: ubuntu-20.04
+
+    steps:
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: 7.4
+          coverage: none
+          tools: composer-normalize
+
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Normalize
+        run: composer-normalize --dry-run

psalm.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0"?>
+<psalm
+    errorLevel="2"
+    resolveFromConfigFile="true"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xmlns="https://getpsalm.org/schema/config"
+    xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
+>
+    <projectFiles>
+        <directory name="src" />
+        <ignoreFiles>
+            <directory name="vendor" />
+        </ignoreFiles>
+    </projectFiles>
+</psalm>