diff --git a/src/Contract/Lib/FileResolverContract.php b/src/Contract/Lib/FileResolverContract.php
new file mode 100644
index 0000000..b2b8217
--- /dev/null
+++ b/src/Contract/Lib/FileResolverContract.php
@@ -0,0 +1,50 @@
+<?php
+declare(strict_types=1);
+
+/**
+ * This source file is available under the terms of the
+ * Pimcore Open Core License (POCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ *  @copyright  Copyright (c) Pimcore GmbH (https://www.pimcore.com)
+ *  @license    Pimcore Open Core License (POCL)
+ */
+
+namespace Pimcore\Bundle\StaticResolverBundle\Contract\Lib;
+
+use DateInterval;
+use League\Flysystem\FilesystemException;
+use League\Flysystem\FilesystemOperator;
+use Pimcore\Cache;
+use Pimcore\File;
+
+class FileResolverContract implements FileResolverContractInterface
+{
+    public function getValidFilename(string $tmpFilename, ?string $language = null, string $replacement = '-'): string {
+        return File::getValidFilename($tmpFilename, $language, $replacement);
+    }
+
+    public function putPhpFile(string $path, string $data): void {
+        File::putPhpFile($path, $data);
+    }
+
+    public function getContext() {
+        return File::getContext();
+    }
+
+    public function setContext($context): void {
+        File::setContext($context);
+    }
+
+    public function getLocalTempFilePath(?string $fileExtension = null, bool $keep = false): string {
+        return File::getLocalTempFilePath($fileExtension, $keep);
+    }
+
+    /**
+     * @throws FilesystemException
+     */
+    public function recursiveDeleteEmptyDirs(FilesystemOperator $storage, string $storagePath): void {
+        File::recursiveDeleteEmptyDirs($storage, $storagePath);
+    }
+}
diff --git a/src/Contract/Lib/FileResolverContractInterface.php b/src/Contract/Lib/FileResolverContractInterface.php
new file mode 100644
index 0000000..d464997
--- /dev/null
+++ b/src/Contract/Lib/FileResolverContractInterface.php
@@ -0,0 +1,32 @@
+<?php
+declare(strict_types=1);
+
+/**
+ * This source file is available under the terms of the
+ * Pimcore Open Core License (POCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ *  @copyright  Copyright (c) Pimcore GmbH (https://www.pimcore.com)
+ *  @license    Pimcore Open Core License (POCL)
+ */
+
+namespace Pimcore\Bundle\StaticResolverBundle\Contract\Lib;
+
+use League\Flysystem\FilesystemOperator;
+
+interface FileResolverContractInterface
+{
+    public function getValidFilename(string $tmpFilename, ?string $language = null, string $replacement = '-'): string;
+    public function putPhpFile(string $path, string $data): void;
+    /**
+     * @return null|resource
+     */
+    public function getContext();
+    /**
+     * @param resource $context
+     */
+    public function setContext($context): void;
+    public function getLocalTempFilePath(?string $fileExtension = null, bool $keep = false): string;
+    public function recursiveDeleteEmptyDirs(FilesystemOperator $storage, string $storagePath): void;
+}
diff --git a/src/Lib/FileResolver.php b/src/Lib/FileResolver.php
new file mode 100644
index 0000000..c442b9b
--- /dev/null
+++ b/src/Lib/FileResolver.php
@@ -0,0 +1,23 @@
+<?php
+declare(strict_types=1);
+
+/**
+ * This source file is available under the terms of the
+ * Pimcore Open Core License (POCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ *  @copyright  Copyright (c) Pimcore GmbH (https://www.pimcore.com)
+ *  @license    Pimcore Open Core License (POCL)
+ */
+
+namespace Pimcore\Bundle\StaticResolverBundle\Lib;
+
+use Pimcore\Bundle\StaticResolverBundle\Contract\Lib\FileResolverContract;
+
+/**
+ * @internal
+ */
+final class FileResolver extends FileResolverContract implements FileResolverInterface
+{
+}
diff --git a/src/Lib/FileResolverInterface.php b/src/Lib/FileResolverInterface.php
new file mode 100644
index 0000000..a5406ae
--- /dev/null
+++ b/src/Lib/FileResolverInterface.php
@@ -0,0 +1,23 @@
+<?php
+declare(strict_types=1);
+
+/**
+ * This source file is available under the terms of the
+ * Pimcore Open Core License (POCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ *  @copyright  Copyright (c) Pimcore GmbH (https://www.pimcore.com)
+ *  @license    Pimcore Open Core License (POCL)
+ */
+
+namespace Pimcore\Bundle\StaticResolverBundle\Lib;
+
+use Pimcore\Bundle\StaticResolverBundle\Contract\Lib\FileResolverContractInterface;
+
+/**
+ * @internal
+ */
+interface FileResolverInterface extends FileResolverContractInterface
+{
+}