fix: skip keys without :: separator in role lookup

Impact: 1 functions changed, 0 affected

Author: github-actions[bot]

src/export.js

@@ -307,8 +307,9 @@ export function exportMermaid(db, opts = {}) {
     const roleStyles = [];
     for (const key of allKeys) {
       const colonIdx = key.indexOf('::');
-      const file = colonIdx !== -1 ? key.slice(0, colonIdx) : key;
-      const name = colonIdx !== -1 ? key.slice(colonIdx + 2) : '';
+      if (colonIdx === -1) continue;
+      const file = key.slice(0, colonIdx);
+      const name = key.slice(colonIdx + 2);
       const row = db
         .prepare('SELECT role FROM nodes WHERE file = ? AND name = ? AND role IS NOT NULL LIMIT 1')
         .get(file, name);