From d4d97ad7a9c01f8a87f1e2e2e0cb3a177c933ca8 Mon Sep 17 00:00:00 2001
From: Brandon Liu <bdon@users.noreply.github.com>
Date: Thu, 9 Jan 2025 16:10:43 +0800
Subject: [PATCH] maplibre: display error on empty bounds [#508] (#510)

* If a MapLibre source has empty bounds, no tiles will be displayed.
---
 js/src/adapters.ts | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/js/src/adapters.ts b/js/src/adapters.ts
index e38855f..60bc976 100644
--- a/js/src/adapters.ts
+++ b/js/src/adapters.ts
@@ -221,6 +221,13 @@ export class Protocol {
       }
 
       const h = await instance.getHeader();
+
+      if (h.minLon >= h.maxLon || h.minLat >= h.maxLat) {
+        console.error(
+          `Bounds of PMTiles archive ${h.minLon},${h.minLat},${h.maxLon},${h.maxLat} are not valid.`
+        );
+      }
+
       return {
         data: {
           tiles: [`${params.url}/{z}/{x}/{y}`],