Add phpstan (#28)

.github/workflows/phpstan.yml

@@ -0,0 +1,36 @@
+name: phpstan
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+jobs:
+  phpstan:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Setup PHP
+      uses: shivammathur/setup-php@v2
+      with:
+        php-version: 8.1
+
+    - name: Cache Composer packages
+      id: composer-cache
+      uses: actions/cache@v3
+      with:
+        path: vendor
+        key: ${{ runner.os }}-php-${{ hashFiles('**/composer.lock') }}
+        restore-keys: |
+          ${{ runner.os }}-php-
+    - name: Install dependencies
+      if: steps.composer-cache.outputs.cache-hit != 'true'
+      run: |
+        composer install
+        composer dump
+    - name: Run analyse phpstan
+      run: vendor/bin/phpstan analyse --error-format github

.gitignore

@@ -1,6 +1,7 @@
 /vendor
 /build
-composer.lock
+/composer.lock
 /tests/tmp
-/.phpunit.result.cache
 /phpunit.xml
+/.phpunit.result.cache
+/.php-cs-fixer.cache

composer.json

@@ -29,7 +29,8 @@
     "require-dev": {
         "orchestra/testbench": "^7.0",
         "phpunit/phpunit": "^9.5",
-        "friendsofphp/php-cs-fixer": "^3.13"
+        "friendsofphp/php-cs-fixer": "^3.13",
+        "nunomaduro/larastan": "^2.3"
     },
     "autoload": {
         "psr-4": {

phpstan.neon.dist

@@ -0,0 +1,8 @@
+includes:
+    - ./vendor/nunomaduro/larastan/extension.neon
+
+parameters:
+    paths:
+        - src
+        - tests
+    level: 5