fix: check for firstMatch before using

githubnext · Aug 30, 2022 · d1ebf2f · d1ebf2f
1 parent ef94a37
commit d1ebf2f
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/blocks/file-blocks/markdown-edit/extensions.ts b/blocks/file-blocks/markdown-edit/extensions.ts
@@ -168,6 +168,7 @@ export function makeExtensions({
                   return -1;
                 const hasIncludedLink = match[0].indexOf("](http") !== -1;
                 if (hasIncludedLink) return -1;
+                if (!firstMatch) return -1;
                 return cx.addElement(
                   cx.elt("URL", start, start + 1 + firstMatch.length)
                 );