From e77eaf87f77397adee074cb5155beb3a0538cdd1 Mon Sep 17 00:00:00 2001
From: Jonas Lagoni <jonas-lt@live.dk>
Date: Mon, 12 Feb 2024 13:44:16 +0100
Subject: [PATCH] fix: partial and playground (#1788)

---
 src/utils/Partials.ts | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/src/utils/Partials.ts b/src/utils/Partials.ts
index d37fc250d2..3e69203a5f 100644
--- a/src/utils/Partials.ts
+++ b/src/utils/Partials.ts
@@ -49,10 +49,7 @@ export function mergePartialAndDefault<T extends Record<string, any>>(
     const isArray = Array.isArray(prop);
     if (isArray) {
       // merge array into target with a new array instance so we dont touch the default value
-      target[propName] = Array(target[propName]);
-      for (const [index, value] of prop.entries()) {
-        target[propName][index] = value;
-      }
+      target[propName] = [...(target[propName] ?? []), ...(prop ?? [])];
     } else if (isObjectOrClass && isRegularObject) {
       target[propName] = mergePartialAndDefault(target[propName], prop);
     } else if (prop) {