import { LatLngBounds } from './LatLngBounds.js';
export type LatLngTuple = [number, number, number?];
export type LatLngLiteral = {
    lat: number;
    lng: number;
    alt?: number;
};
export type LatLngExpression = LatLng | LatLngTuple | LatLngLiteral | {
    lat: number;
    lon: number;
    alt?: number;
};
/** @typedef {[number, number, number?]} LatLngTuple */
/** @typedef {{lat: number, lng: number, alt?: number}} LatLngLiteral */
/**
 * A `LatLng`, or its array (`[lat, lng]`, `[lat, lng, alt]`) or object (`{lat, lng}`, `{lat, lon}`) form.
 * @typedef {LatLng | LatLngTuple | LatLngLiteral | {lat: number, lon: number, alt?: number}} LatLngExpression
 */
/**
 * Represents a geographical point with a certain latitude and longitude.
 *
 * @example
 * ```js
 * const latlng = new LatLng(50.5, 30.5);
 * ```
 *
 * All Leaflet methods that accept LatLng objects also accept them in a simple Array form and simple object form
 * (unless noted otherwise), so these lines are equivalent:
 *
 * ```js
 * map.panTo([50, 30]);
 * map.panTo({lat: 50, lng: 30});
 * map.panTo({lat: 50, lon: 30});
 * map.panTo(new LatLng(50, 30));
 * ```
 *
 * Note that `LatLng` does not inherit from Leaflet's `Class` object, which means new classes can't inherit from it,
 * and new methods can't be added to it with the `include` function.
 *
 * @categoryDescription Functions
 * There are several static functions which can be called without instantiating LatLng:
 */
export declare class LatLng {
    /**
     * Latitude in degrees
     * @type {number}
     */
    lat: number;
    /**
     * Longitude in degrees
     * @type {number}
     */
    lng: number;
    /**
     * Altitude in meters (optional)
     * @type {number | undefined}
     */
    alt: number | undefined;
    constructor(lat: number, lng: number, alt?: number);
    constructor(coords: LatLngExpression);
    /**
     * Returns `true` if the LatLng object can be properly initialized.
     * @category Functions
     * @overload
     * @param {number} lat
     * @param {number} [lng]
     * @param {number} [alt]
     * @returns {boolean}
     */
    /**
     * Expects an array of the form `[Number, Number]` or `[Number, Number, Number]`, or a plain object of the form
     * `{lat: Number, lng: Number}`. Returns `true` if the LatLng object can be properly initialized.
     * @overload
     * @param {LatLngExpression} coords
     * @returns {boolean}
     */
    /**
     * @param {unknown} lat
     * @param {unknown} [lng]
     * @param {unknown} [alt]
     */
    static validate(lat: number, lng?: number, alt?: number): boolean;
    /**
     * Returns `true` if the LatLng object can be properly initialized.
     * @category Functions
     * @overload
     * @param {number} lat
     * @param {number} [lng]
     * @param {number} [alt]
     * @returns {boolean}
     */
    /**
     * Expects an array of the form `[Number, Number]` or `[Number, Number, Number]`, or a plain object of the form
     * `{lat: Number, lng: Number}`. Returns `true` if the LatLng object can be properly initialized.
     * @overload
     * @param {LatLngExpression} coords
     * @returns {boolean}
     */
    /**
     * @param {unknown} lat
     * @param {unknown} [lng]
     * @param {unknown} [alt]
     */
    static validate(coords: LatLngExpression): boolean;
    /**
     * Returns `true` if the given `LatLng` point is at the same position (within a small margin of
     * error). The margin of error can be overridden by setting `maxMargin` to a small number.
     * @param {LatLngExpression} [obj]
     * @param {number} [maxMargin]
     */
    equals(obj?: LatLngExpression, maxMargin?: number): boolean;
    /**
     * Returns a string representation of the point (for debugging purposes).
     * @param {number} [precision]
     */
    toString(precision?: number): string;
    /**
     * Returns the distance (in meters) to the given `LatLng` calculated using the
     * [Haversine formula](https://en.wikipedia.org/wiki/Haversine_formula).
     * @param {LatLngExpression} other
     */
    distanceTo(other: LatLngExpression): number;
    /** Returns a new `LatLng` object with the longitude wrapped so it's always between -180 and +180 degrees. */
    wrap(): LatLng;
    /**
     * Returns a new `LatLngBounds` object in which each boundary is `sizeInMeters/2` meters apart from the `LatLng`.
     * @param {number} sizeInMeters
     */
    toBounds(sizeInMeters: number): LatLngBounds;
    /** Returns a copy of the current LatLng. */
    clone(): LatLng;
}
/**
 * Great-circle distance on a sphere of radius R, shared with `EarthCRS.distance`.
 * @param {LatLng} latlng1
 * @param {LatLng} latlng2
 * @param {number} R
 */
export declare function haversineDistance(latlng1: LatLng, latlng2: LatLng, R: number): number;