diff --git a/packages/@uppy/core/src/Uppy.ts b/packages/@uppy/core/src/Uppy.ts
index 7a05862c6..ced020d3a 100644
--- a/packages/@uppy/core/src/Uppy.ts
+++ b/packages/@uppy/core/src/Uppy.ts
@@ -43,7 +43,7 @@ import {
   Translator,
 } from './utils/index.js'
 
-type Processor = (
+export type Processor = (
   fileIDs: string[],
   uploadID: string,
   // biome-ignore lint/suspicious/noConfusingVoidType: ...
diff --git a/packages/@uppy/core/src/index.ts b/packages/@uppy/core/src/index.ts
index 2aad59c60..6320561f5 100644
--- a/packages/@uppy/core/src/index.ts
+++ b/packages/@uppy/core/src/index.ts
@@ -17,6 +17,7 @@ export type {
   PartialTreeFolderRoot,
   PartialTreeId,
   PluginTypeRegistry,
+  Processor,
   State,
   UnknownPlugin,
   UnknownProviderPlugin,