From fbe00cc9056d9aa6c9af70ff2e598e4adbd745db Mon Sep 17 00:00:00 2001
From: Marco Salazar <marco@elementl.com>
Date: Wed, 11 Oct 2023 23:33:46 -0400
Subject: [PATCH] make type nullable

---
 .../packages/ui-core/src/app/ExecutionSessionStorage.tsx       | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/js_modules/dagster-ui/packages/ui-core/src/app/ExecutionSessionStorage.tsx b/js_modules/dagster-ui/packages/ui-core/src/app/ExecutionSessionStorage.tsx
index d4239e0a147ec..d12b54de4baca 100644
--- a/js_modules/dagster-ui/packages/ui-core/src/app/ExecutionSessionStorage.tsx
+++ b/js_modules/dagster-ui/packages/ui-core/src/app/ExecutionSessionStorage.tsx
@@ -43,7 +43,8 @@ export interface IExecutionSession {
   mode: string | null;
   needsRefresh: boolean;
   assetSelection: {assetKey: AssetKeyInput; opNames: string[]}[] | null;
-  assetChecksAvailable: Pick<AssetCheck, 'name' | 'canExecuteIndividually' | 'assetKey'>[];
+  // Nullable for backwards compatability
+  assetChecksAvailable?: Pick<AssetCheck, 'name' | 'canExecuteIndividually' | 'assetKey'>[];
   includeSeparatelyExecutableChecks: boolean;
   solidSelection: string[] | null;
   solidSelectionQuery: string | null;