import type { TaskCallback, TaskConfig, TaskDataInfo as TaskMindInfo, TaskInterface, TaskMessageModel } from './interface/task';
export default class Task implements TaskInterface {
    _callback: TaskCallback;
    mindInfo: TaskMindInfo;
    private taskList;
    private _cacheTaskList;
    private _startReceiveMessage;
    private _sessionId;
    private _urlConfig;
    set callback(callback: TaskCallback);
    get callback(): TaskCallback;
    constructor(taskConfig: TaskConfig);
    waitingForStart(): void;
    startReceiveMsg(): Promise<void>;
    fetchAllHistoryMsg(): Promise<TaskMessageModel[]>;
    fetchTaskMsg(data: {
        history: boolean;
        seqId?: string | undefined;
    }): Promise<TaskMessageModel[]>;
    appendTask(taskItem: TaskMessageModel): void;
    /**
     * 内部调用，不需要校验当前状态
     * @param taskItem 内部需要追加的 taskItem
     */
    private _appendTask;
}