/**
 * @license
 * Copyright 2025 Qwen
 * SPDX-License-Identifier: Apache-2.0
 */
import type { SubAgentEventEmitter } from '@3-/qwen-code-core';
import type { SessionContext } from './types.js';
import type * as acp from '../acp.js';
/**
 * Tracks and emits events for sub-agent tool calls within TaskTool execution.
 *
 * Uses the unified ToolCallEmitter for consistency with normal flow
 * and history replay. Also handles permission requests for tools that
 * require user approval.
 */
export declare class SubAgentTracker {
    private readonly ctx;
    private readonly client;
    private readonly toolCallEmitter;
    private readonly toolStates;
    constructor(ctx: SessionContext, client: acp.Client);
    /**
     * Sets up event listeners for a sub-agent's tool events.
     *
     * @param eventEmitter - The SubAgentEventEmitter from TaskTool
     * @param abortSignal - Signal to abort tracking if parent is cancelled
     * @returns Array of cleanup functions to remove listeners
     */
    setup(eventEmitter: SubAgentEventEmitter, abortSignal: AbortSignal): Array<() => void>;
    /**
     * Creates a handler for tool call start events.
     */
    private createToolCallHandler;
    /**
     * Creates a handler for tool result events.
     */
    private createToolResultHandler;
    /**
     * Creates a handler for tool approval request events.
     */
    private createApprovalHandler;
    /**
     * Converts confirmation details to permission options for the client.
     */
    private toPermissionOptions;
}