Add composer-require-checker to static analysis checks

.github/workflows/static-analysis.yml

@@ -12,6 +12,7 @@ env:
 
 jobs:
   phpstan:
+    name: PHPStan
     runs-on: ubuntu-latest
     steps:
       - name: Check out code
@@ -45,3 +46,37 @@ jobs:
         run: vendor/bin/phpstan
           analyse
           --error-format=github
+
+  require-checker:
+    name: Require checker
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v2
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+
+      - name: Get Composer Cache Directory
+        id: composer-cache
+        run: |
+          echo "::set-output name=dir::$(composer config cache-files-dir)"
+
+      - name: Cache Composer packages
+        uses: actions/cache@v3
+        with:
+          path: ${{ steps.composer-cache.outputs.dir }}
+          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.json') }}
+          restore-keys: |
+            ${{ runner.os }}-composer-
+
+      - name: Install dependencies
+        run: composer update
+          --no-ansi
+          --no-interaction
+          --no-progress
+          --no-suggest
+          --prefer-dist
+
+      - name: Composer require-checker
+        run: vendor/bin/composer-require-checker check

composer.json

@@ -28,6 +28,7 @@
         "php": "^7.3 || ^8.0"
     },
     "require-dev": {
+        "maglnet/composer-require-checker": "^2.0 || ^3.0 || ^4.0",
         "mheap/phpunit-github-actions-printer": "^1.5",
         "phpstan/phpstan": "^1.0",
         "phpstan/phpstan-phpunit": "^1.0",

src/Example.php

@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Your\Library;
+
+/**
+ * This file exists to:
+ * a) Demonstrate the default namespace setup
+ * b) Provide something for composer-require-checker to find when CI runs
+ * against the actual template repository.
+ *
+ * You won't want to keep it!
+ */
+class Example
+{
+    public string $message;
+
+    public function __construct(string $message)
+    {
+        $this->message = $message;
+    }
+}