diff --git a/src/lib/upload.ts b/src/lib/upload.ts
index e589f6e..6a3ff62 100644
--- a/src/lib/upload.ts
+++ b/src/lib/upload.ts
@@ -3,6 +3,10 @@ import { existsSync } from 'fs';
 import path from 'path';
 import { nanoid } from 'nanoid';
 
+function getWorkingDirectory(): string {
+  return process.cwd();
+}
+
 export interface UploadOptions {
   maxSize?: number;
   allowedTypes?: string[];
@@ -130,7 +134,7 @@ export async function uploadFile(
 
   const uploadBaseDir = process.env.UPLOAD_DIR || './uploads';
   const datePath = getDatePath();
-  const uploadDir = path.join(process.cwd(), uploadBaseDir, type, datePath);
+  const uploadDir = path.join(getWorkingDirectory(), uploadBaseDir, type, datePath);
 
   if (!existsSync(uploadDir)) {
     await mkdir(uploadDir, { recursive: true });
@@ -184,7 +188,7 @@ export async function getFileInfo(filePath: string) {
       createdAt: stats.birthtime,
       modifiedAt: stats.mtime,
     };
-  } catch (error) {
+  } catch {
     return null;
   }
 }