From 6d54fca66693bde88ca76738372eb9532c6c824d Mon Sep 17 00:00:00 2001
From: Tsu-ba-me <ynho.li.aa.e@gmail.com>
Date: Tue, 16 Aug 2022 00:16:33 -0400
Subject: [PATCH] fix(striker-ui): allow check if message key exists in
 MessageGroup

---
 striker-ui/components/MessageGroup.tsx | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/striker-ui/components/MessageGroup.tsx b/striker-ui/components/MessageGroup.tsx
index cadfa321..c7b5664f 100644
--- a/striker-ui/components/MessageGroup.tsx
+++ b/striker-ui/components/MessageGroup.tsx
@@ -19,6 +19,7 @@ type MessageGroupOptionalProps = {
 type MessageGroupProps = MessageGroupOptionalProps;
 
 type MessageGroupForwardedRefContent = {
+  exists?: (key: string) => boolean;
   setMessage?: (key: string, message?: Message) => void;
 };
 
@@ -36,6 +37,10 @@ const MessageGroup = forwardRef<
   ) => {
     const [messages, setMessages] = useState<Messages>({});
 
+    const exists = useCallback(
+      (key: string) => messages[key] !== undefined,
+      [messages],
+    );
     const setMessage = useCallback((key: string, message?: Message) => {
       setMessages((previous) => {
         const result = { ...previous };
@@ -67,7 +72,10 @@ const MessageGroup = forwardRef<
       [defaultMessageType, messages],
     );
 
-    useImperativeHandle(ref, () => ({ setMessage }), [setMessage]);
+    useImperativeHandle(ref, () => ({ exists, setMessage }), [
+      exists,
+      setMessage,
+    ]);
 
     return <>{messageElements}</>;
   },