diff --git a/.eslintrc.json b/.eslintrc.json
index a8ac414..bf69df2 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -1,4 +1,7 @@
 {
   "extends": "theme-next",
+  "parserOptions": {
+    "ecmaVersion": 2018
+  },
   "root": true
 }
diff --git a/scripts/events/lib/highlight.js b/scripts/events/lib/highlight.js
index f6f900b..43ede36 100644
--- a/scripts/events/lib/highlight.js
+++ b/scripts/events/lib/highlight.js
@@ -5,7 +5,7 @@ function parse(file) {
   let rule = '';
   let background = '';
   let foreground = '';
-  css.replace(/\.hljs([^\S]+|,[^\{]+)\{(.*?)\}/sg, (match, $1, content) => {
+  css.replace(/\.hljs(\s+|,[^{]+)\{(.*?)\}/sg, (match, $1, content) => {
     rule += content;
     return match;
   });