[site/toc][s]: fix headings observer for null values

2022-06-20 20:17:35 +03:00 · 2022-06-20 20:17:35 +03:00 · 5182148867
parent c5ca269f04
commit 5182148867
1 changed files with 2 additions and 1 deletions
--- a/site/components/Heading.js
+++ b/site/components/Heading.js
@ -8,7 +8,8 @@ export const Heading = ({ level, observer }) => (props) => {
    if (!observer) {
      return
    }
-    observer.observe(document.getElementById(props.id));
+    const heading = document.getElementById(props.id)
+    if (heading) observer.observe(heading);
  });

  return React.createElement(`h${level}`, {