From 678456f9180866c633478f36cc942789148fc996 Mon Sep 17 00:00:00 2001
From: Lordfirespeed <28568841+Lordfirespeed@users.noreply.github.com>
Date: Fri, 1 Nov 2024 14:06:50 +0000
Subject: [PATCH] fix: typescript cannot remember inference on indexed types

---
 src/lib/adapters/utils.ts | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/src/lib/adapters/utils.ts b/src/lib/adapters/utils.ts
index 1dc8c13..12fa003 100644
--- a/src/lib/adapters/utils.ts
+++ b/src/lib/adapters/utils.ts
@@ -14,7 +14,10 @@ export const filterByPrefixKey = (
     }, {});
 };
 
-export function deepMerge(target: unknown, ...sources: unknown[]) {
+export function deepMerge(
+  target: Partial<Record<string, unknown>>,
+  ...sources: unknown[]
+): Partial<Record<string, unknown>> {
   if (!sources.length) {
     return target;
   }
@@ -34,11 +37,13 @@ export function deepMerge(target: unknown, ...sources: unknown[]) {
         return;
       }
 
-      if (!target[key]) {
-        target[key] = {};
+      let subTarget = target[key]
+      if (!isMergeableObject(subTarget)) {
+        target[key] = subTarget = {}
+        return
       }
 
-      deepMerge(target[key], source[key]);
+      deepMerge(subTarget, source[key]);
     });
   }