Fix PHP 8.1 compatibility (#52)

.github/workflows/autoformat.yml

@@ -1,7 +1,8 @@
 name: "Autoformat"
-
 on:
   push:
+    branches:
+      - '*'
 
 jobs:
   composer-normalize:
@@ -22,3 +23,26 @@ jobs:
         uses: stefanzweifel/git-auto-commit-action@v4
         with:
           commit_message: Normalize composer.json
+
+  php-cs-fixer:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          ref: ${{ github.head_ref }}
+
+      - uses: shivammathur/setup-php@v2
+        with:
+          coverage: none
+          extensions: mbstring
+          php-version: 7.4
+
+      - run: composer install --no-interaction --no-progress --no-suggest
+
+      - run: vendor/bin/php-cs-fixer fix
+
+      - run: git pull
+
+      - uses: stefanzweifel/git-auto-commit-action@v4
+        with:
+          commit_message: Apply php-cs-fixer changes

.github/workflows/continuous-integration.yml

@@ -9,8 +9,8 @@ on:
 name: "Continuous Integration"
 
 jobs:
-  coding-standards:
-    name: "Coding Standards"
+  composer-validate:
+    name: "Composer Validate"
 
     runs-on: ubuntu-latest
 
@@ -21,38 +21,6 @@ jobs:
       - name: "Validate composer.json and composer.lock"
         run: php7.4 /usr/bin/composer validate
 
-      - name: "Install locked dependencies with composer"
-        run: php7.4 /usr/bin/composer install --no-interaction --no-progress
-
-  php-cs-fixer:
-    name: "Fix PHP codestyle with php-cs-fixer"
-
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: "Checkout"
-        uses: actions/checkout@v2
-        with:
-          ref: ${{ github.head_ref }}
-
-      - name: "Install PHP with extensions"
-        uses: shivammathur/setup-php@v2
-        with:
-          coverage: none
-          extensions: mbstring
-          php-version: 7.4
-
-      - name: "Install locked dependencies with composer"
-        run: composer install --no-interaction --no-progress --no-suggest
-
-      - name: "Run php-cs-fixer"
-        run: vendor/bin/php-cs-fixer fix
-
-      - name: "Commit fixes"
-        uses: stefanzweifel/git-auto-commit-action@v4
-        with:
-          commit_message: Apply php-cs-fixer changes
-
   static-code-analysis:
     name: "Static Code Analysis"
 
@@ -78,6 +46,7 @@ jobs:
         php-version:
           - 7.4
           - 8.0
+          - 8.1
 
         dependencies:
           - lowest

composer.json

@@ -49,6 +49,11 @@
     "mockery/mockery": "Used in Operation::mock()"
   },
   "config": {
+    "allow-plugins": {
+      "ergebnis/composer-normalize": true,
+      "phpstan/extension-installer": true,
+      "infection/extension-installer": true
+    },
     "platform": {
       "php": "7.4.15"
     },

src/ObjectLike.php

@@ -30,10 +30,7 @@ abstract protected function converters(): array;
      */
     public static function fromStdClass(stdClass $data): self
     {
-        static $instance;
-        $instance ??= new static();
-
-        return $instance->fromGraphQL($data);
+        return (new static())->fromGraphQL($data);
     }
 
     /**
@@ -87,7 +84,10 @@ public function toGraphQL($value): stdClass
         return $serializable;
     }
 
-    public function fromGraphQL($value)
+    /**
+     * @return static
+     */
+    public function fromGraphQL($value): self
     {
         if (! $value instanceof stdClass) {
             throw new InvalidArgumentException('Expected stdClass, got: ' . gettype($value));