chore: validate options when created, not used

      (newIcon) => leafletRef.value.setIcon && leafletRef.value.setIcon(newIcon)

    );

    const { options, methods } = markerSetup(props, leafletRef, context);

    onMounted(async () => {

      const { marker, DomEvent } = await import("leaflet/dist/leaflet-src.esm");

    if (options.icon === undefined) {

      // If the options objection has a property named 'icon', then Leaflet will overwrite

      // the default icon with it for the marker, _even if it is undefined_.

      // This leads to the issue discussed in https://github.com/vue-leaflet/vue-leaflet/issues/130

      delete options.icon;

    }

    onMounted(async () => {

      const { marker, DomEvent } = await import("leaflet/dist/leaflet-src.esm");

      leafletRef.value = marker(props.latLng, options);

      const listeners = remapEvents(context.attrs);