From 2ac01fc54e534dde4787d47f3e6a3012a26d3588 Mon Sep 17 00:00:00 2001
From: Shashik <shashikblog@gmail.com>
Date: Thu, 28 Oct 2021 11:24:29 +0530
Subject: [PATCH] Add Reflect.ownKeys return type miss match issue

---
 src/index.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/index.ts b/src/index.ts
index 79cf695..a53592b 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -180,7 +180,9 @@ export class Sakota<T extends object> implements ProxyHandler<T> {
    * Proxy handler trap for `Reflect.ownKeys()`.
    */
   public ownKeys(obj: any): (string  | symbol)[] {
-    const keys = Reflect.ownKeys(obj);
+    // FIXME: need to figure out why this return (string | number | symbol)[]
+    // which is not the same as the return type of ES2015 Reflect.ownKeys.
+    const keys = Reflect.ownKeys(obj) as (string | symbol)[];
     if (this.diff) {
       for (const key in this.diff.$set) {
         if (!Object.prototype.hasOwnProperty.call(this.diff.$set, key)) {