import { RequestInit } from 'node-fetch';
declare class _fetcher {
    private _prefix;
    private _key;
    private _default_opts;
    constructor(newKey: string);
    get gzip(): boolean;
    set gzip(use: boolean);
    get prefix(): string;
    set prefix(newPrefix: string);
    get key(): string;
    set key(newKey: string);
    get default_opts(): RequestInit;
    checkKey(): boolean;
    get(url: string, opts?: RequestInit): Promise<any>;
}
export default _fetcher;