import { LayerGroup } from './LayerGroup.js';
import { LatLngBounds } from '../geo/LatLngBounds.js';
import type { FeatureGroupEventMap, InteractiveLayerOptions, LayerEvent } from '../types.js';
import type { Layer } from './Layer.js';
export type FeatureGroupEvents = {
    /**
     * Fired when a layer is added to this `FeatureGroup`
     */
    layeradd: LayerEvent;
    /**
     * Fired when a layer is removed from this `FeatureGroup`
     */
    layerremove: LayerEvent;
};
/** @import {FeatureGroupEventMap, InteractiveLayerOptions, LayerEvent} from '../types.js' */
/** @import {Layer} from './Layer.js' */
/** @import {LayerBase} from './LayerBase.js' */
/**
 * @typedef {Object} FeatureGroupEvents
 * @property {LayerEvent} layeradd Fired when a layer is added to this `FeatureGroup`
 * @property {LayerEvent} layerremove Fired when a layer is removed from this `FeatureGroup`
 */
/**
 * Extended `LayerGroup` that makes it easier to do the same thing to all its member layers:
 *  * [`bindPopup`](#layer-bindpopup) binds a popup to all of the layers at once (likewise with [`bindTooltip`](#layer-bindtooltip))
 *  * Events are propagated to the `FeatureGroup`, so if the group has an event
 * handler, it will handle events from any of the layers. This includes pointer events and custom events.
 *  * Has `layeradd` and `layerremove` events
 * @example
 * ```js
 * new FeatureGroup([marker1, marker2, polyline])
 * 	.bindPopup('Hello world!')
 * 	.on('click', function() { alert('Clicked on a member of the group!'); })
 * 	.addTo(map);
 * ```
 * @template {Layer} [L=Layer]
 * @template {InteractiveLayerOptions} [O=InteractiveLayerOptions]
 * @template {FeatureGroupEventMap} [E=FeatureGroupEventMap]
 * @extends {LayerGroup<L, O, E>}
 */
export declare class FeatureGroup<L extends Layer = Layer, O extends InteractiveLayerOptions = InteractiveLayerOptions, E extends FeatureGroupEventMap = FeatureGroupEventMap> extends LayerGroup<L, O, E> {
    /** @param {L} layer */
    addLayer(layer: L): this;
    /** @param {L | number} layer */
    removeLayer(layer: L | number): this;
    /**
     * Sets the given path options to each layer of the group that has a `setStyle` method.
     * @param {object} style
     */
    setStyle(style: object): this;
    /** Brings the layer group to the top of all other layers */
    bringToFront(): this;
    /** Brings the layer group to the back of all other layers */
    bringToBack(): this;
    /**
     * Returns the LatLngBounds of the Feature Group (created from bounds and coordinates
     * of its children, including the layers of nested layer groups).
     */
    getBounds(): LatLngBounds;
    /** @returns {Layer | undefined} */
    _getOverlaySource(): Layer | undefined;
}