grafana/public/app/plugins/panel/geomap/layers/basemaps/index.ts

import { cartoLayers } from './carto';
import { esriLayers } from './esri';
import { genericLayers } from './generic';
import { osmLayers } from './osm';

/**
 * Registry for layer handlers
 */
export const basemapLayers = [
  ...osmLayers,
  ...cartoLayers,
  ...esriLayers, // keep formatting
  ...genericLayers,
];