Merge pull request #17037 from jimjaeger/patch-2

Add preservePath parameter to multer defitition as described https://github.com/expressjs/multer

types/multer/index.d.ts

@@ -34,6 +34,9 @@ declare namespace multer {
             parts?: number;
             /** For multipart forms, the max number of header key=> value pairs to parse Default: 2000(same as node's http). */
             headerPairs?: number;
+            /** Keep the full path of files instead of just the base name (Default: false) */
+            preservePath?: boolean;
+        
         };
         /** A function to control which files to upload and which to skip. */
         fileFilter?: (req: Express.Request, file: Express.Multer.File, callback: (error: Error, acceptFile: boolean) => void) => void;