ace2_inner: Get computed style of first Element, not first Node

`window.getComputedStyle()` throws if passed a non-Element Node.
ether · Aug 21, 2021 · f706699 · f706699
1 parent 7690dd6
commit f706699
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/static/js/ace2_inner.js b/src/static/js/ace2_inner.js
@@ -3495,7 +3495,7 @@ function Ace2Inner(editorInfo, cssManagers) {
         // use that for displaying the side div line number inline with the first line
         // of content -- This is used in ep_headings, ep_font_size etc. where the line
         // height is increased.
-        const elementStyle = window.getComputedStyle(docLine.firstChild);
+        const elementStyle = window.getComputedStyle(docLine.firstElementChild);
         const lineHeight = parseInt(elementStyle.getPropertyValue('line-height'));
         const marginBottom = parseInt(elementStyle.getPropertyValue('margin-bottom'));
         lineHeights.push(lineHeight + marginBottom);