/**
 * The following code is modified based on
 * https://github.com/nanobrowser/nanobrowser/blob/master/chrome-extension/src/background/agent/service.ts
 *
 * Apache-2.0 License
 * Copyright (c) 2024 alexchenzl
 * https://github.com/nanobrowser/nanobrowser/blob/master/LICENSE
 */
import { BaseChatModel } from '@langchain/core/language_models/chat_models';
import { BrowserContextConfig } from '../browser/types';
import { AgentEvent } from './event/types';
type RegisterNewStepCallback = (event: AgentEvent) => Promise<void>;
export declare class Agent {
    private llm;
    private browserContext;
    private registerNewStepCallback?;
    private executor?;
    constructor(llm: BaseChatModel, options?: {
        browserContextConfig?: BrowserContextConfig;
        registerNewStepCallback?: RegisterNewStepCallback;
    });
    private subscribeToExecutorEvents;
    run(task: string): Promise<void>;
}
export {};
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