import { AxiosInstance } from 'axios';
import { UserToken } from './types';
export default abstract class AbstractFetcher {
    static BASE_URL: string;
    static DEFAULT_TIMEOUT: number;
    private username?;
    private password?;
    fetcher: AxiosInstance;
    constructor({ apiKey, siteId, username, password, timeout, fetcher, }: {
        apiKey: string;
        siteId: string;
        username?: string;
        password?: string;
        timeout?: number;
        fetcher?: AxiosInstance;
    });
    protected craftAccessTokenHeader(accessToken?: string): {
        headers: {
            authorization: string;
        };
    } | undefined;
    getUserToken(): Promise<import("axios").AxiosResponse<UserToken, any>>;
}