From 94a125357e67bdc44377c6460d7050b4bd88f495 Mon Sep 17 00:00:00 2001
From: mike-000 <49240900+mike-000@users.noreply.github.com>
Date: Wed, 13 Oct 2021 10:38:05 +0100
Subject: [PATCH] Avoid startsWith for browser compatibility

---
 src/ol/layer/MapboxVector.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ol/layer/MapboxVector.js b/src/ol/layer/MapboxVector.js
index aabdb7614b..bb3f51691b 100644
--- a/src/ol/layer/MapboxVector.js
+++ b/src/ol/layer/MapboxVector.js
@@ -380,7 +380,7 @@ class MapboxVectorLayer extends VectorTileLayer {
 
     const source = this.getSource();
     if (
-      styleSource.url.startsWith('mapbox://') ||
+      styleSource.url.indexOf('mapbox://') === 0 ||
       styleSource.url.indexOf('{z}') !== -1
     ) {
       // Tile source url, handle it directly