[openstreetmap/openstreetmap-website] Add PWA geo protocol handler (PR #5736)

[Marwin Hochfelsner]

@hlfan commented on this pull request.



> @@ -121,6 +135,27 @@ OSM = {
     return mapParams;
   },
 
+  parseGeoURI: function (geoURI) {
+    if (!geoURI || !URL.canParse(geoURI)) return;
+    const url = new URL(geoURI);
+    if (url.protocol !== "geo:" || !url.pathname) return;
+    const [path, ...params] = url.pathname.split(";");
+    let coords;
+    try {
+      coords = L.latLng(path.split(","));
+    } catch { return; }
+    if (!coords) return;
+    const searchParams = new URLSearchParams(params.join("&"));
+    const crs = searchParams.get("crs");
+    if (crs && crs !== "wgs84") return;
+    const uncertainty = parseFloat(searchParams.get("u"));

Updated. I also removed `URL.canParse()` in favor of another try-catch block for ES6 compatibility.

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