/**
 * GeoFire is an open-source library that allows you to store and query a set
 * of keys based on their geographic location. At its heart, GeoFire simply
 * stores locations with string keys. Its main benefit, however, is the
 * possibility of retrieving only those keys within a given geographic area -
 * all in realtime.
 *
 * GeoFire 0.0.0
 * https://github.com/firebase/geofire-js/
 * License: MIT
 */
import { GeoQuery, QueryCriteria } from './GeoQuery';
import { Geopoint } from 'geofire-common';
import { DatabaseReference } from 'firebase/database';
/**
 * Creates a GeoFire instance.
 */
export declare class GeoFire {
    private _firebaseRef;
    /**
     * @param _firebaseRef A Firebase reference where the GeoFire data will be stored.
     */
    constructor(_firebaseRef: DatabaseReference);
    /********************/
    /********************/
    /**
     * Returns a promise fulfilled with the location corresponding to the provided key.
     *
     * If the provided key does not exist, the returned promise is fulfilled with null.
     *
     * @param key The key of the location to retrieve.
     * @returns A promise that is fulfilled with the location of the given key.
     */
    get(key: string): Promise<Geopoint>;
    /**
     * Returns the Firebase instance used to create this GeoFire instance.
     *
     * @returns The Firebase instance used to create this GeoFire instance.
     */
    ref(): DatabaseReference;
    /**
     * Removes the provided key from this GeoFire. Returns an empty promise fulfilled when the key has been removed.
     *
     * If the provided key is not in this GeoFire, the promise will still successfully resolve.
     *
     * @param key The key of the location to remove.
     * @returns A promise that is fulfilled after the inputted key is removed.
     */
    remove(key: string): Promise<string>;
    /**
     * Adds the provided key - location pair(s) to Firebase. Returns an empty promise which is fulfilled when the write is complete.
     *
     * If any provided key already exists in this GeoFire, it will be overwritten with the new location value.
     *
     * @param keyOrLocations The key representing the location to add or a mapping of key - location pairs which
     * represent the locations to add.
     * @param location The [latitude, longitude] pair to add.
     * @returns A promise that is fulfilled when the write is complete.
     */
    set(keyOrLocations: string | any, location?: Geopoint): Promise<any>;
    /**
     * Returns a new GeoQuery instance with the provided queryCriteria.
     *
     * @param queryCriteria The criteria which specifies the GeoQuery's center and radius.
     * @return A new GeoQuery object.
     */
    query(queryCriteria: QueryCriteria): GeoQuery;
}