diff --git a/packages/@uppy/core/src/Uppy.ts b/packages/@uppy/core/src/Uppy.ts
index 6f13065b2..36757b926 100644
--- a/packages/@uppy/core/src/Uppy.ts
+++ b/packages/@uppy/core/src/Uppy.ts
@@ -42,7 +42,7 @@ import {
 } from './Restricter.js'
 import supportsUploadProgress from './supportsUploadProgress.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 961bdd1a5..eecd1e6e2 100644
--- a/packages/@uppy/core/src/index.ts
+++ b/packages/@uppy/core/src/index.ts
@@ -23,6 +23,7 @@ export type {
   PartialTreeFolderRoot,
   PartialTreeId,
   PluginTypeRegistry,
+  Processor,
   State,
   UnknownPlugin,
   UnknownProviderPlugin,