From 98248bd45b2d856cf4cf3fd4e61b7527d90a5515 Mon Sep 17 00:00:00 2001
From: David Bonnet <david@bonnet.cc>
Date: Thu, 2 Nov 2023 09:37:12 +0100
Subject: [PATCH] Add `useResilient`

---
 lib/hooks/useResilient.ts | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 lib/hooks/useResilient.ts

diff --git a/lib/hooks/useResilient.ts b/lib/hooks/useResilient.ts
new file mode 100644
index 00000000..a6d6a503
--- /dev/null
+++ b/lib/hooks/useResilient.ts
@@ -0,0 +1,15 @@
+import { useRef } from "../dependencies";
+
+/**
+ * Returns the last non-undefined version of the provided `value`, or `undefined`.
+ *
+ * @param value The `value` to keep a non-undefined value of.
+ * @returns The last non-undefined version of the provided `value`, or `undefined`.
+ */
+export function useResilient<T>(value: T | undefined): T | undefined {
+  const ref = useRef(value);
+  if (value !== undefined) {
+    ref.current = value;
+  }
+  return ref.current;
+}