Clean-up unusedcode

.gitignore

@@ -4,4 +4,5 @@ composer.lock
 cs-check.json
 .phpunit.result.cache
 /build/
-*.phar
+*.phar
+.php-cs-fixer.cache

.php-cs-fixer.dist.php

@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+return (new PhpCsFixer\Config())
+    ->setRules([
+        'no_unused_imports' => true,
+    ])
+    ->setFinder(
+        PhpCsFixer\Finder::create()
+            ->exclude('vendor')
+            ->notPath('assets/TestFiles/UseSingleLineNoGroup.php')
+            ->in([__DIR__.'/src/', __DIR__.'/tests/'])
+    )
+;

src/Parser/PHP/Strategy/FullQualifiedParameterStrategy.php

@@ -5,7 +5,6 @@
 namespace ComposerUnused\SymbolParser\Parser\PHP\Strategy;
 
 use PhpParser\Node;
-use PhpParser\Node\Expr\New_;
 use PhpParser\Node\Name\FullyQualified;
 
 final class FullQualifiedParameterStrategy implements StrategyInterface

src/Parser/PHP/SymbolCollectorInterface.php

@@ -5,7 +5,6 @@
 namespace ComposerUnused\SymbolParser\Parser\PHP;
 
 use Closure;
-use ComposerUnused\SymbolParser\Symbol\SymbolName;
 use PhpParser\NodeVisitor;
 
 interface SymbolCollectorInterface extends NodeVisitor

src/Symbol/Loader/FileSymbolLoader.php

@@ -50,7 +50,7 @@ public function load(PackageInterface $package): Generator
             array_merge(...$paths)
         );
 
-        $sourceFolders = array_filter($sourceFolders, [$this, 'filterExistingDir']);
+        $sourceFolders = array_filter($sourceFolders, fn (string $dir): bool => $this->filterExistingDir($dir));
 
         $finder = new Finder();
 

src/Symbol/Loader/PsrSymbolLoader.php

@@ -8,6 +8,7 @@
 use Generator;
 use ComposerUnused\SymbolParser\Symbol\NamespaceSymbol;
 
+use function array_keys;
 use function array_merge;
 
 final class PsrSymbolLoader implements SymbolLoaderInterface
@@ -19,7 +20,7 @@ public function load(PackageInterface $package): Generator
             $package->getAutoload()['psr-0'] ?? []
         );
 
-        foreach ($namespaces as $namespace => $dir) {
+        foreach (array_keys($namespaces) as $namespace) {
             yield new NamespaceSymbol($namespace);
         }
     }