implementation

.editorconfig

@@ -0,0 +1,11 @@
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+indent_style = space
+indent_size = 4
+trim_trailing_whitespace = true
+
+[*.{json,xml,yaml,yml}]
+indent_size = 2

.github/workflows/phpstan.yml

@@ -0,0 +1,35 @@
+name: PHPStan
+
+on:
+  push:
+    branches:
+    - main
+  pull_request:
+    branches:
+    - main
+
+permissions:
+  contents: read
+
+jobs:
+  phpstan:
+    runs-on: ubuntu-22.04
+    steps:
+    - uses: actions/checkout@v4
+    - name: Composer Cache
+      uses: actions/cache@v4
+      with:
+        path: /tmp/composer-cache
+        key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
+    - uses: php-actions/composer@v6
+    - name: Gather PHP Paths
+      id: gather-php-paths
+      run: |
+        # Gather all the directories that contain PHP files and all the root level php files, too.
+        {
+          printf 'paths='
+          git ls-files '*.php' | awk -v ORS=' ' -F / '!$2 { print; next; } !s[$1]++ { print $1 }'
+        } >> "$GITHUB_OUTPUT"
+    - uses: php-actions/phpstan@v3
+      with:
+        path: ${{ steps.gather-php-paths.outputs.paths }}

.github/workflows/phpunit.yml

@@ -0,0 +1,23 @@
+name: PHPUnit
+
+on:
+  push:
+    branches:
+    - main
+  pull_request:
+    branches:
+    - main
+
+jobs:
+  build-test:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Composer Cache
+      uses: actions/cache@v4
+      with:
+        path: /tmp/composer-cache
+        key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
+    - uses: php-actions/composer@v6
+    - uses: php-actions/phpunit@v3

.gitignore

@@ -1 +1,2 @@
 /vendor/
+.phpunit.result.cache

composer.json

@@ -13,5 +13,9 @@
             "email": "[email protected]"
         }
     ],
-    "require": {}
+    "require-dev": {
+        "phpstan/phpstan": "^2.1",
+        "rector/rector": "^2.0",
+        "phpunit/phpunit": "^12.2"
+    }
 }