2 files changed, 5 insertions, 2 deletions
diff --git a/src/Utils.ts b/src/Utils.ts
index d4b7da52c..a4db94809 100644
--- a/src/Utils.ts
+++ b/src/Utils.ts
@@ -52,4 +52,6 @@ export class Utils {
     public static AddServerHandlerCallback<T>(socket: Socket, message: Message<T>, handler: (args: [T, (res: any) => any]) => any) {
         socket.on(message.Message, (arg: T, fn: (res: any) => any) => handler([arg, fn]));
     }
-}
-\ No newline at end of file
+}
+
+export type Without<T, K extends keyof T> = Pick<T, Exclude<keyof T, K>>;
+\ No newline at end of file
diff --git a/src/client/util/UndoManager.ts b/src/client/util/UndoManager.ts
index 3cbb994b7..6d1b2f1b8 100644
--- a/src/client/util/UndoManager.ts
+++ b/src/client/util/UndoManager.ts
@@ -1,5 +1,6 @@
 import { observable, action } from "mobx";
 import 'source-map-support/register'
+import { Without } from "../../Utils";
 
 function getBatchName(target: any, key: string | symbol): string {
     let keyName = key.toString();
@@ -80,7 +81,7 @@ export namespace UndoManager {
     }
 
     let openBatches: Batch[] = [];
-    export function GetOpenBatches(): { batchName: string, cancel: () => void }[] {
+    export function GetOpenBatches(): Without<Batch, 'end'>[] {
         return openBatches;
     }
     export class Batch {