Add Backgroundlayer "none"

compare-algorithms/src/components/MyMap.js

@@ -6,6 +6,7 @@ import 'leaflet/dist/leaflet.css'
 import state from '../state.js'
 
 const tileLayers = {
+  nons: <></>,
   osmDE: (
     <TileLayer
       url="https://{s}.tile.openstreetmap.de/tiles/osmde/{z}/{x}/{y}.png"

compare-algorithms/src/components/TileLayerControl.js

@@ -30,6 +30,11 @@ export class TileLayerControl extends React.Component {
           onChange={e => (state.tileLayer = e.target.value)}
           // onChange={console.log}
         >
+          <RadioButton
+            option="none"
+            selected={state.tileLayer}
+            fullName="None"
+          />
           <RadioButton
             option="osmDE"
             selected={state.tileLayer}