Implement requirements of assignment D3.a.

blujai831 · Nov 7, 2024 · 51aa8c7 · 51aa8c7
1 parent f2de070
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diff --git a/example.html b/example.html
diff --git a/src/example.ts b/src/example.ts
diff --git a/src/leafletWorkaround.ts b/src/leafletWorkaround.ts
@@ -1,3 +1,4 @@
+// @deno-types="npm:@types/leaflet@^1.9.14"
 import leaflet from "leaflet";
 
 // Work around bug in Leaflet (https://github.com/Leaflet/Leaflet/issues/4968)
@@ -8,3 +9,13 @@ import shadowUrl from "leaflet/dist/images/marker-shadow.png";
 delete (leaflet.Icon.Default.prototype as unknown as { _getIconUrl: unknown })
   ._getIconUrl;
 leaflet.Icon.Default.mergeOptions({ iconUrl, iconRetinaUrl, shadowUrl });
+
+// Workaround for lack of any way to instantiate an extended layer type
+export function leafletExtend<LayerType>(
+  layerType: leaflet.Class & {
+    extend: (extensions: object) => new (...args: unknown[]) => LayerType;
+  },
+  extensions: object,
+) {
+  return layerType.extend(extensions);
+}