diff --git a/packages/formidable/src/ExtendedFormData.ts b/packages/formidable/src/ExtendedFormData.ts
index 7ed336c..91b448c 100644
--- a/packages/formidable/src/ExtendedFormData.ts
+++ b/packages/formidable/src/ExtendedFormData.ts
@@ -1,12 +1,21 @@
-import {VolatileFile} from 'formidable';
+import {VolatileFile, PersistentFile} from 'formidable';
+
+export type FormFile = typeof PersistentFile & {
+    filepath: string;
+    lastModifiedDate: Date;
+    mimetype: string;
+    newFilename: string;
+    originalFilename: string;
+    size: number;
+}
 
-export type FormDataValue = string | typeof VolatileFile;
+export type FormDataValue = string | FormFile;
 
 export default class ExtendedFormData {
     #data = new Map<string, FormDataValue[]>();
 
     #validateFileType(value: FormDataValue) {
-        if (typeof value != 'string' && !(value instanceof VolatileFile)) {
+        if (typeof value != 'string' && !ExtendedFormData.isFormidableFile(value)) {
             return String(value);
         }
         return value;
@@ -43,13 +52,13 @@ export default class ExtendedFormData {
         return this.getAll(name).filter(value => typeof value == 'string') as string[];
     }
 
-    getFile(name: string): typeof VolatileFile | null {
+    getFile(name: string): FormFile | null {
         const value = this.get(name);
-        return value instanceof VolatileFile ? value as typeof VolatileFile : null;
+        return ExtendedFormData.isFormidableFile(value) ? value as FormFile : null;
     }
 
-    getAllFiles(name: string): (typeof VolatileFile)[] {
-        return this.getAll(name).filter(value => value instanceof File) as (typeof VolatileFile)[];
+    getAllFiles(name: string): (FormFile)[] {
+        return this.getAll(name).filter(value => ExtendedFormData.isFormidableFile(value)) as FormFile[];
     }
 
     has(name: string): boolean {
@@ -81,4 +90,8 @@ export default class ExtendedFormData {
     [Symbol.iterator](): IterableIterator<[string, FormDataValue[]]> {
         return this.#data[Symbol.iterator]();
     }
+
+    static isFormidableFile(object: any) {
+        return object instanceof VolatileFile || object instanceof PersistentFile;
+    }
 }
diff --git a/packages/formidable/src/index.ts b/packages/formidable/src/index.ts
index d0ff0f2..2595aec 100644
--- a/packages/formidable/src/index.ts
+++ b/packages/formidable/src/index.ts
@@ -1,6 +1,6 @@
-import formidable, {VolatileFile} from 'formidable';
+import formidable, {VolatileFile, PersistentFile} from 'formidable';
 import {EventEmitter} from 'node:events';
-import ExtendedFormData, {FormDataValue} from './ExtendedFormData.js';
+import ExtendedFormData, {FormDataValue, FormFile} from './ExtendedFormData.js';
 
 class FormidableRequest extends EventEmitter {
     headers: { [key: string]: string };
@@ -62,9 +62,17 @@ export default async function parseAstroForm(request: Request, options?: formida
     return formData;
 }
 
-export function isFormidableFile(object: any) {
-    return object instanceof VolatileFile;
-}
+const isFormidableFile = ExtendedFormData.isFormidableFile;
 
+export type {
+    FormFile,
+    FormDataValue
+}
 
-export {VolatileFile, FormDataValue, ExtendedFormData};
+export {
+    parseAstroForm,
+    VolatileFile, 
+    PersistentFile,
+    ExtendedFormData,
+    isFormidableFile,
+};