From 36203af88e27034a44f60bd7afe82f87a22ae30e Mon Sep 17 00:00:00 2001
From: Kevin Jahns <kevin.jahns@protonmail.com>
Date: Sat, 29 Jun 2019 14:47:34 +0200
Subject: [PATCH] should not rely on all deconstructing features because not
 all parsers support it

---
 src/utils/UndoManager.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/utils/UndoManager.js b/src/utils/UndoManager.js
index d62f06dc..4a28205a 100644
--- a/src/utils/UndoManager.js
+++ b/src/utils/UndoManager.js
@@ -102,7 +102,10 @@ export class UndoManager extends Observable {
    * @param {Set<any>} [trackedTransactionOrigins=new Set([null])]
    * @param {object} [options={captureTimeout=500}]
    */
-  constructor (typeScope, trackedTransactionOrigins = new Set([null]), { captureTimeout = 500 } = {}) {
+  constructor (typeScope, trackedTransactionOrigins = new Set([null]), { captureTimeout } = {}) {
+    if (captureTimeout == null) {
+      captureTimeout = 500
+    }
     super()
     this.scope = typeScope instanceof Array ? typeScope : [typeScope]
     trackedTransactionOrigins.add(this)