From 96b7cd37016c1e3fd7037b3910ae56f806a9c09f Mon Sep 17 00:00:00 2001
From: Jack Works <jackworks@protonmail.com>
Date: Thu, 3 Mar 2022 15:50:32 +0800
Subject: [PATCH] fix: use defineProperty for appending prop in `storeName`
 (#194)

---
 src/MagicString.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/MagicString.js b/src/MagicString.js
index b5b0ed2..2cccc0d 100644
--- a/src/MagicString.js
+++ b/src/MagicString.js
@@ -365,7 +365,7 @@ export default class MagicString {
 
 		if (storeName) {
 			const original = this.original.slice(start, end);
-			this.storedNames[original] = true;
+			Object.defineProperty(this.storedNames, original, { writable: true, value: true, enumerable: true });
 		}
 
 		const first = this.byStart[start];