export declare const FILE_NAMES: readonly ["a", "b", "c", "d", "e", "f", "g", "h", "i"];
export type FileName = (typeof FILE_NAMES)[number];
export declare const RANK_NAMES: readonly ["1", "2", "3", "4", "5", "6", "7", "8", "9", "10"];
export type RankName = (typeof RANK_NAMES)[number];
export type Square = number;
export type SquareName = `${FileName}${RankName}`;
/**
 * Indexable by square indices.
 */
export type BySquare<T> = T[];
export declare const COLORS: readonly ["red", "black"];
export type Color = (typeof COLORS)[number];
/**
 * Indexable by `red` and `black`.
 */
export type ByColor<T> = {
    [color in Color]: T;
};
export declare const ROLES: readonly ["pawn", "cannon", "chariot", "horse", "elephant", "advisor", "king"];
export type Role = (typeof ROLES)[number];
/**
 * Indexable by `pawn`, `cannon`, `chariot`, `horse`, `elephant`, `advisor`, and `king`.
 */
export type ByRole<T> = {
    [role in Role]: T;
};
export interface Piece {
    role: Role;
    color: Color;
}
export interface Move {
    from: Square;
    to: Square;
}
export declare const RULES: readonly ["xiangqi"];
export type Rules = (typeof RULES)[number];
export interface Outcome {
    winner: Color | undefined;
}