fix(js) prevent long series of ///// from freezing (highlightjs#2657)

joshgoebel · web-flow · commit 82f470689ccc · 2020-08-21T08:30:03.000-04:00
Resolves highlightjs#2656.
diff --git a/CHANGES.md b/CHANGES.md
@@ -10,6 +10,7 @@ Big picture:
 
 Language Improvements:
 
+- fix(js) Prevent long series of /////// from causing freezes (#2656) [Josh Goebel][]
 - enh(csharp) Add `init` and `record` keywords for C# 9.0 (#2660) [Youssef Victor][]
 - enh(matlab) Add new R2019b `arguments` keyword and fix `enumeration` keyword (#2619) [Andrew Janke][]
 - fix(kotlin) Remove very old keywords and update example code (#2623) [kageru][]
diff --git a/src/languages/javascript.js b/src/languages/javascript.js
@@ -164,7 +164,7 @@ export default function(hljs) {
           regex.lookahead(regex.concat(
             // we also need to allow for multiple possible comments inbetween
             // the first key:value pairing
-            /(((\/\/.*)|(\/\*(.|\n)*\*\/))\s*)*/,
+            /(((\/\/.*$)|(\/\*(.|\n)*\*\/))\s*)*/,
             IDENT_RE + '\\s*:'))),
         relevance: 0,
         contains: [
