Cleanup (remove the tree/branch mechanism which isn't useful).

src/components/map/Map.tsx

@@ -46,23 +46,6 @@ const [getState, setState] = createSignal({
 
 export { getState };
 
-interface Branch {
-  vectorLayer?: VectorLayer;
-  features?: Feature[];
-  hidden?: boolean;
-  updateHandler?: (feature: Feature) => void;
-}
-
-interface Tree {
-  [key: string]: Branch;
-}
-
-const [tree, setTree] = createStore<Tree>({});
-export { tree };
-export const setBranch = (key: string, branch: Branch) => {
-  setTree({ ...tree, [key]: branch });
-};
-
 const Map: Component = () => {
   const [getMap, setMap] = createSignal<OlMap | null>(null);
   const params = useParams();
@@ -208,7 +191,6 @@ const Map: Component = () => {
     olMap.on(['singleclick'], clickHandler);
 
     setMap(olMap);
-    setBranch('/', { vectorLayer: vectorLayer });
   });
 
   return (

src/components/map/index.ts

@@ -1 +1 @@
-export { default, getState, tree, setBranch } from './Map';
+export { default, getState } from './Map';