RD-902 Fixes MapLibre direct import due to CJS issues

Author: Les Moffat

src/caching.ts

@@ -2,7 +2,7 @@ import type { GetResourceResponse, RequestParameters, ResourceType } from "mapli
 
 import { config } from "./config";
 
-import { addProtocol } from "maplibre-gl";
+import maplibregl from "maplibre-gl";
 
 import { defaults } from "./constants/defaults";
 
@@ -14,6 +14,8 @@ const CACHE_LIMIT_ITEMS = 1000;
 const CACHE_LIMIT_CHECK_INTERVAL = 100;
 export const CACHE_API_AVAILABLE = typeof caches !== "undefined";
 
+const { addProtocol } = maplibregl;
+
 export function localCacheTransformRequest(reqUrl: URL, resourceType?: ResourceType): string {
   if (CACHE_API_AVAILABLE && config.caching && config.session && reqUrl.host === defaults.maptilerApiHost) {
     if (resourceType === "Source" && reqUrl.href.includes("tiles.json")) {