From 408b162cee0fb7c54e38d878f438f94c13106587 Mon Sep 17 00:00:00 2001
From: devjiwonchoi <devjiwonchoi@gmail.com>
Date: Tue, 25 Jun 2024 23:31:50 +0900
Subject: [PATCH] refactor: no need to use Object property

---
 packages/next/src/build/index.ts | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/packages/next/src/build/index.ts b/packages/next/src/build/index.ts
index a7229393fb1d0..e2497924d6eb4 100644
--- a/packages/next/src/build/index.ts
+++ b/packages/next/src/build/index.ts
@@ -726,12 +726,8 @@ export default async function build(
         )
 
       if (config.requiredEnv.length > 0) {
-        const envs = Object.assign({}, config.env, combinedEnv)
-        const envKeys = new Set(Object.keys(envs))
-
-        const missingKeys = config.requiredEnv.filter(
-          (key) => !envKeys.has(key)
-        )
+        const envs = { ...config.env, ...combinedEnv }
+        const missingKeys = config.requiredEnv.filter((key) => !(key in envs))
 
         Log.error(
           `Missing required environment variables: ${missingKeys.join(', ')}`