From 32052b3198c7a47b8a20f301c5ec003d0a748c40 Mon Sep 17 00:00:00 2001
From: Linus Groh <mail@linusgroh.de>
Date: Sun, 14 Mar 2021 12:02:53 +0100
Subject: [PATCH] LibJS: Fix flags check in regexp_create()

We need to check for undefined, not empty - otherwise it will literally
use "undefined" as the flags, which will fail (Invalid RegExp flag 'n').
---
 Userland/Libraries/LibJS/Runtime/RegExpObject.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Userland/Libraries/LibJS/Runtime/RegExpObject.cpp b/Userland/Libraries/LibJS/Runtime/RegExpObject.cpp
index 0ba76e530a..b3f49a2ca7 100644
--- a/Userland/Libraries/LibJS/Runtime/RegExpObject.cpp
+++ b/Userland/Libraries/LibJS/Runtime/RegExpObject.cpp
@@ -180,7 +180,7 @@ RegExpObject* regexp_create(GlobalObject& global_object, Value pattern, Value fl
             return nullptr;
     }
     String f;
-    if (flags.is_empty()) {
+    if (flags.is_undefined()) {
         f = String::empty();
     } else {
         f = flags.to_string(global_object);