diff --git a/src/Frontend/Compiler/FileVersioner.php b/src/Frontend/Compiler/FileVersioner.php
new file mode 100644
index 000000000..de2766c20
--- /dev/null
+++ b/src/Frontend/Compiler/FileVersioner.php
@@ -0,0 +1,55 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * For detailed copyright and license information, please view the
+ * LICENSE file that was distributed with this source code.
+ */
+
+namespace Flarum\Frontend\Compiler;
+
+use Illuminate\Contracts\Filesystem\Filesystem;
+use Illuminate\Support\Arr;
+
+class FileVersioner implements VersionerInterface
+{
+    /**
+     * @var Filesystem
+     */
+    protected $filesystem;
+    const REV_MANIFEST = 'rev-manifest.json';
+
+    public function __construct(Filesystem $filesystem)
+    {
+        $this->filesystem = $filesystem;
+    }
+
+    public function putRevision(string $file, ?string $revision)
+    {
+        if ($this->filesystem->has(static::REV_MANIFEST)) {
+            $manifest = json_decode($this->filesystem->read(static::REV_MANIFEST), true);
+        } else {
+            $manifest = [];
+        }
+
+        if ($revision) {
+            $manifest[$file] = $revision;
+        } else {
+            unset($manifest[$file]);
+        }
+
+        $this->filesystem->put(static::REV_MANIFEST, json_encode($manifest));
+    }
+
+    public function getRevision(string $file): ?string
+    {
+        if ($this->filesystem->has(static::REV_MANIFEST)) {
+            $manifest = json_decode($this->filesystem->read(static::REV_MANIFEST), true);
+
+            return Arr::get($manifest, $file);
+        }
+
+        return null;
+    }
+}
diff --git a/src/Frontend/Compiler/RevisionCompiler.php b/src/Frontend/Compiler/RevisionCompiler.php
index 9db42c21c..edb88bafc 100644
--- a/src/Frontend/Compiler/RevisionCompiler.php
+++ b/src/Frontend/Compiler/RevisionCompiler.php
@@ -12,21 +12,22 @@ namespace Flarum\Frontend\Compiler;
 use Flarum\Frontend\Compiler\Source\SourceCollector;
 use Flarum\Frontend\Compiler\Source\SourceInterface;
 use Illuminate\Contracts\Filesystem\Filesystem;
-use Illuminate\Support\Arr;
 
 /**
  * @internal
  */
 class RevisionCompiler implements CompilerInterface
 {
-    const REV_MANIFEST = 'rev-manifest.json';
-
     const EMPTY_REVISION = 'empty';
 
     /**
      * @var Filesystem
      */
     protected $assetsDir;
+    /**
+     * @var VersionerInterface
+     */
+    protected $versioner;
 
     /**
      * @var string
@@ -41,11 +42,13 @@ class RevisionCompiler implements CompilerInterface
     /**
      * @param Filesystem $assetsDir
      * @param string $filename
+     * @param VersionerInterface|null $versioner @deprecated nullable will be removed at v2.0
      */
-    public function __construct(Filesystem $assetsDir, string $filename)
+    public function __construct(Filesystem $assetsDir, string $filename, VersionerInterface $versioner = null)
     {
         $this->assetsDir = $assetsDir;
         $this->filename = $filename;
+        $this->versioner = $versioner ?: new FileVersioner($assetsDir);
     }
 
     public function getFilename(): string
@@ -62,7 +65,7 @@ class RevisionCompiler implements CompilerInterface
     {
         $sources = $this->getSources();
 
-        $oldRevision = $this->getRevision();
+        $oldRevision = $this->versioner->getRevision($this->filename);
 
         $newRevision = $this->calculateRevision($sources);
 
@@ -76,7 +79,7 @@ class RevisionCompiler implements CompilerInterface
                 $newRevision = static::EMPTY_REVISION;
             }
 
-            $this->putRevision($newRevision);
+            $this->versioner->putRevision($this->filename, $newRevision);
         }
     }
 
@@ -101,12 +104,12 @@ class RevisionCompiler implements CompilerInterface
 
     public function getUrl(): ?string
     {
-        $revision = $this->getRevision();
+        $revision = $this->versioner->getRevision($this->filename);
 
         if (! $revision) {
             $this->commit();
 
-            $revision = $this->getRevision();
+            $revision = $this->versioner->getRevision($this->filename);
 
             if (! $revision) {
                 return null;
@@ -164,34 +167,6 @@ class RevisionCompiler implements CompilerInterface
         return $string;
     }
 
-    protected function getRevision(): ?string
-    {
-        if ($this->assetsDir->has(static::REV_MANIFEST)) {
-            $manifest = json_decode($this->assetsDir->read(static::REV_MANIFEST), true);
-
-            return Arr::get($manifest, $this->filename);
-        }
-
-        return null;
-    }
-
-    protected function putRevision(?string $revision)
-    {
-        if ($this->assetsDir->has(static::REV_MANIFEST)) {
-            $manifest = json_decode($this->assetsDir->read(static::REV_MANIFEST), true);
-        } else {
-            $manifest = [];
-        }
-
-        if ($revision) {
-            $manifest[$this->filename] = $revision;
-        } else {
-            unset($manifest[$this->filename]);
-        }
-
-        $this->assetsDir->put(static::REV_MANIFEST, json_encode($manifest));
-    }
-
     /**
      * @param SourceInterface[] $sources
      * @return string
@@ -214,10 +189,10 @@ class RevisionCompiler implements CompilerInterface
 
     public function flush()
     {
-        if ($this->getRevision() !== null) {
+        if ($this->versioner->getRevision($this->filename) !== null) {
             $this->delete($this->filename);
 
-            $this->putRevision(null);
+            $this->versioner->putRevision($this->filename, null);
         }
     }
 
diff --git a/src/Frontend/Compiler/VersionerInterface.php b/src/Frontend/Compiler/VersionerInterface.php
new file mode 100644
index 000000000..ad5dae42e
--- /dev/null
+++ b/src/Frontend/Compiler/VersionerInterface.php
@@ -0,0 +1,17 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * For detailed copyright and license information, please view the
+ * LICENSE file that was distributed with this source code.
+ */
+
+namespace Flarum\Frontend\Compiler;
+
+interface VersionerInterface
+{
+    public function putRevision(string $file, ?string $revision);
+
+    public function getRevision(string $file): ?string;
+}