From eabc635ba2d9e390ef4ec17f18f831b4927027a2 Mon Sep 17 00:00:00 2001
From: George Wan <gw9999@outlook.com>
Date: Thu, 12 Oct 2023 08:08:58 -0700
Subject: [PATCH] Change cached column param to readonly

Co-authored-by: Mike Bender <mikebender@deephaven.io>
---
 packages/iris-grid/src/IrisGridTreeTableModel.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/iris-grid/src/IrisGridTreeTableModel.ts b/packages/iris-grid/src/IrisGridTreeTableModel.ts
index 6fc4577214..003d58177c 100644
--- a/packages/iris-grid/src/IrisGridTreeTableModel.ts
+++ b/packages/iris-grid/src/IrisGridTreeTableModel.ts
@@ -192,7 +192,7 @@ class IrisGridTreeTableModel extends IrisGridTableModelTemplate<
   );
 
   getCachedGroupedColumnSet = memoize(
-    (groupedColumns: Column[]) =>
+    (groupedColumns: readonly Column[]) =>
       new Set(
         groupedColumns.map(c1 =>
           this.columns.findIndex(c2 => c1.name === c2.name)