export interface RpcRequest {
    id: number;
    method: string;
    params?: Record<string, unknown>;
}
export interface RpcResponse {
    id: number | null;
    result?: unknown;
    error?: {
        code: number;
        message: string;
    };
}
export declare class MgbaClient {
    private readonly host;
    private readonly port;
    private socket;
    private pending;
    private nextId;
    private buf;
    private connectPromise;
    constructor(host?: string, port?: number);
    connect(): Promise<void>;
    disconnect(): void;
    get connected(): boolean;
    call<T = unknown>(method: string, params?: Record<string, unknown>): Promise<T>;
}
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