/*!
 * -------------------------------------------------------------------------- *
 *                                                                            *
 *    Kokopu - A JavaScript/TypeScript chess library.                         *
 *    <https://www.npmjs.com/package/kokopu>                                  *
 *    Copyright (C) 2018-2026  Yoann Le Montagner <yo35 -at- melix.net>       *
 *                                                                            *
 *    Kokopu is free software: you can redistribute it and/or                 *
 *    modify it under the terms of the GNU Lesser General Public License      *
 *    as published by the Free Software Foundation, either version 3 of       *
 *    the License, or (at your option) any later version.                     *
 *                                                                            *
 *    Kokopu is distributed in the hope that it will be useful,               *
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of          *
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the            *
 *    GNU Lesser General Public License for more details.                     *
 *                                                                            *
 *    You should have received a copy of the GNU Lesser General               *
 *    Public License along with this program. If not, see                     *
 *    <http://www.gnu.org/licenses/>.                                         *
 *                                                                            *
 * -------------------------------------------------------------------------- */
/**
 * Internal structure in `Position`, that encodes the state of the corresponding chess position.
 */
export interface PositionImpl {
    board: number[];
    turn: number;
    castling: number[];
    enPassant: number;
    variant: number;
    legal: boolean | null;
    king: number[];
    effectiveCastling: number[] | null;
    effectiveEnPassant: number | null;
}
export declare function hasCanonicalStartPosition(variant: number): boolean;
export declare function makeEmpty(variant: number): PositionImpl;
/**
 * @param variant - Must be a variant with a canonical start position.
 */
export declare function makeInitial(variant: number): PositionImpl;
/**
 * Chess960 initial position, following the numbering scheme proposed by Reinhard Scharnagl (see for instance https://chess960.net/start-positions/).
 *
 * @param scharnaglCode - Integer between 0 and 959 inclusive.
 */
export declare function make960FromScharnagl(scharnaglCode: number): PositionImpl;
export declare function makeCopy(position: PositionImpl): PositionImpl;