From c57c7ea220209431bda0af44c882b76c845d93e0 Mon Sep 17 00:00:00 2001
From: sawka <mike.sawka@gmail.com>
Date: Mon, 8 Jul 2024 18:30:11 -0700
Subject: [PATCH] useAtomValueSafe

---
 frontend/util/util.ts | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/frontend/util/util.ts b/frontend/util/util.ts
index 4f06f3f2..6221db21 100644
--- a/frontend/util/util.ts
+++ b/frontend/util/util.ts
@@ -3,6 +3,7 @@
 
 import base64 from "base64-js";
 import clsx from "clsx";
+import * as jotai from "jotai";
 
 function isBlank(str: string): boolean {
     return str == null || str == "";
@@ -152,6 +153,15 @@ function jotaiLoadableValue<T>(value: Loadable<T>, def: T): T {
     return def;
 }
 
+const NullAtom = jotai.atom(null);
+
+function useAtomValueSafe<T>(atom: jotai.Atom<T>): T {
+    if (atom == null) {
+        return jotai.useAtomValue(NullAtom) as T;
+    }
+    return jotai.useAtomValue(atom);
+}
+
 export {
     base64ToArray,
     base64ToString,
@@ -163,4 +173,5 @@ export {
     jsonDeepEqual,
     makeIconClass,
     stringToBase64,
+    useAtomValueSafe,
 };