From 9eb4669477eb03fb404b11eec41e09a93ec15425 Mon Sep 17 00:00:00 2001
From: bobzel <zzzman@gmail.com>
Date: Mon, 19 May 2025 10:32:35 -0400
Subject: fix crash from last.

---
 src/client/util/SearchUtil.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'src')

diff --git a/src/client/util/SearchUtil.ts b/src/client/util/SearchUtil.ts
index 17c4af9d1..2f23d07dc 100644
--- a/src/client/util/SearchUtil.ts
+++ b/src/client/util/SearchUtil.ts
@@ -59,9 +59,9 @@ export namespace SearchUtil {
      * An array of all field names used by the Doc or its prototypes.
      */
     export function documentKeys(doc: Doc) {
-        return Object.keys(Doc.GetAllPrototypes(doc).reduce(
+        return Object.keys(Doc.GetAllPrototypes(doc).filter(proto => proto).reduce(
             (keys, proto) => {
-                Object.keys(proto).forEach(keys.add);
+                Object.keys(proto).forEach(keys.add.bind(keys));
                 return keys;
             },
             new Set<string>())); // prettier-ignore
-- 
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