From fc927c848e67068e6dc55ddb7c377d77eb808201 Mon Sep 17 00:00:00 2001
From: Wee Bit <aweebit64@gmail.com>
Date: Wed, 2 Aug 2023 02:37:29 +0300
Subject: [PATCH] Remove duplicates from ownKeys() handler's return value

---
 lib/command.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/command.js b/lib/command.js
index bfbe57af3..b122cc4ad 100644
--- a/lib/command.js
+++ b/lib/command.js
@@ -60,7 +60,9 @@ class CommandBase extends EventEmitter {
       ownKeys(target) {
         const result = Reflect.ownKeys(target);
         if (target._storeOptionsAsProperties) {
-          result.push(...Reflect.ownKeys(target._optionValuesProxy));
+          result.push(...Reflect.ownKeys(target._optionValuesProxy).filter(
+            key => !(result.includes(key)) // remove duplicates
+          ));
         }
         return result;
       },