import { EventEmitter } from 'node:events';
export interface AcpRunnerOptions {
    command: string;
    args: string[];
    cwd: string;
    env?: Record<string, string | undefined>;
}
/**
 * ACP runner over stdio using JSON-RPC 2.0 + NDJSON transport.
 *
 * Spec: https://agentclientprotocol.com/overview
 */
export declare class AcpRunner extends EventEmitter {
    private readonly logger;
    private proc?;
    private nextId;
    private pending;
    start(options: AcpRunnerOptions): void;
    stop(signal?: 'SIGINT' | 'SIGTERM'): void;
    isRunning(): boolean;
    request<T = unknown>(method: string, params?: unknown): Promise<T>;
    notify(method: string, params?: unknown): void;
    private handleMessage;
    private writeResponse;
}