From d9f1cdb9924a1f22fc145711a499962a76477ac7 Mon Sep 17 00:00:00 2001
From: Josh Goebel <me@joshgoebel.com>
Date: Wed, 2 Dec 2020 14:37:43 -0500
Subject: [PATCH] fix(javascript/typescript) fix poly backtracking issue

- Fix poly backtracking issue in gnarly `()` counting regex
---
 src/languages/javascript.js | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/languages/javascript.js b/src/languages/javascript.js
index 3372b917bf..f56817ba55 100644
--- a/src/languages/javascript.js
+++ b/src/languages/javascript.js
@@ -282,8 +282,8 @@ export default function(hljs) {
             '[^()]*(\\(' +
             '[^()]*(\\(' +
             '[^()]*' +
-            '\\))*[^()]*' +
-            '\\))*[^()]*' +
+            '\\)[^()]*)*' +
+            '\\)[^()]*)*' +
             '\\)|' + hljs.UNDERSCORE_IDENT_RE + ')\\s*=>',
             returnBegin: true,
             end: '\\s*=>',
@@ -373,8 +373,8 @@ export default function(hljs) {
           '[^()]*(\\(' +
             '[^()]*(\\(' +
               '[^()]*' +
-            '\\))*[^()]*' +
-          '\\))*[^()]*' +
+            '\\)[^()]*)*' +
+          '\\)[^()]*)*' +
           '\\)\\s*\\{', // end parens
         returnBegin:true,
         contains: [