From 02e28eab3009658866943b6d57bd5ffdca04c1dc Mon Sep 17 00:00:00 2001
From: overlookmotel <theoverlookmotel@gmail.com>
Date: Fri, 12 Jan 2024 18:27:47 +0000
Subject: [PATCH] refactor(parser): remove extraneous code from regex parsing

---
 crates/oxc_parser/src/lexer/mod.rs | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/crates/oxc_parser/src/lexer/mod.rs b/crates/oxc_parser/src/lexer/mod.rs
index e41a1cad9ec220..f563a64c7f72c4 100644
--- a/crates/oxc_parser/src/lexer/mod.rs
+++ b/crates/oxc_parser/src/lexer/mod.rs
@@ -870,10 +870,6 @@ impl<'a> Lexer<'a> {
 
         while let Some(ch @ ('$' | '_' | 'a'..='z' | 'A'..='Z' | '0'..='9')) = self.peek() {
             self.current.chars.next();
-            if !ch.is_ascii_lowercase() {
-                self.error(diagnostics::RegExpFlag(ch, self.current_offset()));
-                continue;
-            }
             let flag = if let Ok(flag) = RegExpFlags::try_from(ch) {
                 flag
             } else {