From 10cc10e0e88569cc48d86e9ab4d90538683bfaf6 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Thu, 2 Sep 2021 20:49:27 -0700
Subject: Handle missing string

---
 modern/src/map/switcher/switcher.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'modern/src')

diff --git a/modern/src/map/switcher/switcher.js b/modern/src/map/switcher/switcher.js
index cb7326f4..c239662a 100644
--- a/modern/src/map/switcher/switcher.js
+++ b/modern/src/map/switcher/switcher.js
@@ -29,7 +29,9 @@ export class SwitcherControl {
       const styleElement = document.createElement('button');
       styleElement.type = 'button';
       styleElement.innerText = style.title;
-      styleElement.classList.add(style.title.replace(/[^a-z0-9-]/gi, '_'));
+      if (style.title) {
+        styleElement.classList.add(style.title.replace(/[^a-z0-9-]/gi, '_'));
+      }
       styleElement.dataset.uri = JSON.stringify(style.uri);
       styleElement.addEventListener('click', (event) => {
         const { srcElement } = event;
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