export declare enum RequestMsgCMD {
    Response = "_ipipe.fetch.response_",
    Request = "_ipipe.fetch.request_"
}
type ResponseType = "text" | "buffer" | "json";
export type RequestMsg = {
    cmd: RequestMsgCMD;
    sid: string;
    connectId: string;
    data: {
        url: string;
        init: RequestInit;
    };
    responseType: ResponseType;
};
export type ResponseMsg = {
    cmd: RequestMsgCMD;
    sid: string;
    connectId: string;
    data: any;
};
/** 给后台发送message请求的封装类 */
export declare class Request {
    private readonly worker;
    private connectId;
    private tasks;
    constructor(worker: Worker | Window);
    request(url: string, init: RequestInit & {
        responseType: ResponseType;
    }, callback?: (data: any) => void): Promise<any>;
    private handleResponse;
    private sendMsg;
}
/**
 * 发起横担request请求, 请求跟fetch一样
 * @param url
 * @param init
 * @param callback
 * @returns
 */
export default function (url: string, init: RequestInit & {
    responseType: "text" | "buffer" | "json";
}, callback?: (data: any) => void): Promise<any>;
export {};