sveaflet/dist/utils/control-layer.js

Sveaflet = Svelte + Leaflet

export const setControlLayer = (params) => {
    const { layerType, checked, map, controlLayers, name, layer } = params;
    if (layerType === 'base') {
        if (checked) {
            map.addLayer(layer);
            controlLayers.addBaseLayer(layer, name);
        }
        else {
            controlLayers.addBaseLayer(layer, name);
        }
    }
    else if (layerType === 'overlay') {
        if (checked) {
            map.addLayer(layer);
            controlLayers.addOverlay(layer, name);
        }
        else {
            controlLayers.addOverlay(layer, name);
        }
    }
};