import type { Color } from './api.js';
export interface EngineOptions {
    moveTime?: number;
    depth?: number;
    color?: Color | 'both' | 'none';
    stockfishPath?: string;
}
export declare class Engine {
    private stockfish;
    private state;
    private moveTime;
    private depth;
    private color;
    private stockfishPath;
    private externalUciCallback;
    private onUciOk;
    private onBestMove;
    constructor(options?: EngineOptions);
    init(): Promise<void>;
    private _onUci;
    setUciCallback(callback: (uci: string) => void): void;
    getMove(fen: string): Promise<string>;
    getColor(): Color | "both" | "none";
    isSearching(): boolean;
    stopSearch(): Promise<void>;
}