html: fix bad match -> slice op preview

1 files changed, 1 insertions, 1 deletions

diff --git a/src/html.js b/src/html.js
index 7b8f327a..6ae07217 100644
--- a/src/html.js
+++ b/src/html.js
@@ -881,7 +881,7 @@ export class Tag {
         }
 
         if (itemIncludesItsOwnChunkwrap || itemIncludesBreakout) {
-          const trailingWhitespace = content.match(/\s*$/);
+          const trailingWhitespace = content.match(/\s*$/)?.[0];
           if (trailingWhitespace) {
             content = content.slice(0, -trailingWhitespace.length);
           }