1 files changed, 1 insertions, 1 deletions

diff --git a/subprojects/frontend/src/editor/indentationMarkerViewPlugin.ts b/subprojects/frontend/src/editor/indentationMarkerViewPlugin.ts
index 96be0eea..d5ad536b 100644
--- a/subprojects/frontend/src/editor/indentationMarkerViewPlugin.ts
+++ b/subprojects/frontend/src/editor/indentationMarkerViewPlugin.ts
@@ -91,7 +91,7 @@ function getNumIndentMarkersForNonEmptyLine(
 ) {
   let numIndents = 0;
   let numConsecutiveSpaces = 0;
-  let prevChar: string | null = null;
+  let prevChar: string | undefined;
 
   for (let char = 0; char < text.length; char += 1) {
     // Bail if we encounter a non-whitespace character