From 656177660a597fe48584de73b51ec5397d066576 Mon Sep 17 00:00:00 2001
From: andrewgryan <andrew.ryan@metoffice.gov.uk>
Date: Thu, 2 Jan 2025 16:53:43 +0000
Subject: [PATCH 1/2] add support for zoom-offset to l-tile-layer element

---
 src/l-tile-layer.js      |  8 ++++++++
 src/l-tile-layer.test.js | 14 ++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/src/l-tile-layer.js b/src/l-tile-layer.js
index b8de34a..a3d509e 100644
--- a/src/l-tile-layer.js
+++ b/src/l-tile-layer.js
@@ -39,6 +39,14 @@ class LTileLayer extends LLayer {
     });
     const options = parse(schema, this);
 
+    const zoomOffset = this.getAttribute("zoom-offset");
+    if (zoomOffset) {
+      const number = parseInt(zoomOffset);
+      if (!isNaN(number)) {
+        options["zoomOffset"] = number;
+      }
+    }
+
     // GridLayer options
     const gridOptions = gridLayerOptions(this);
 
diff --git a/src/l-tile-layer.test.js b/src/l-tile-layer.test.js
index fa00595..085b5bd 100644
--- a/src/l-tile-layer.test.js
+++ b/src/l-tile-layer.test.js
@@ -76,3 +76,17 @@ it("should support tile-size attribute default value", () => {
   const expected = tileLayer(urlTemplate, {});
   expect(actual).toEqual(expected);
 });
+
+it.each([["-1", -1]])(
+  "should support zoom-offset attribute",
+  (text, zoomOffset) => {
+    const urlTemplate = "/";
+    const el = document.createElement("l-tile-layer");
+    el.setAttribute("url-template", urlTemplate);
+    el.setAttribute("zoom-offset", text);
+    document.body.appendChild(el);
+    const actual = el.layer;
+    const expected = tileLayer(urlTemplate, { zoomOffset });
+    expect(actual).toEqual(expected);
+  },
+);

From 5cbfc3caec908ec77d1d8e225fc9459e4b38c6f3 Mon Sep 17 00:00:00 2001
From: andrewgryan <andrew.ryan@metoffice.gov.uk>
Date: Thu, 2 Jan 2025 16:58:11 +0000
Subject: [PATCH 2/2] Release 0.13.7

---
 package.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/package.json b/package.json
index af379f8..763f43d 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "leaflet-html",
   "type": "module",
-  "version": "0.13.6",
+  "version": "0.13.7",
   "description": "Leaflet maps expressed in HTML suitable for HTMX",
   "keywords": [
     "leaflet",