import { Method } from 'axios';
export declare class BaseAPI {
    protected GET: Method;
    protected POST: Method;
    protected DELETE: Method;
    protected PUT: Method;
    protected Bearer: string;
    private _username;
    private _secret;
    private _refreshToken;
    private _authToken;
    private _tokenExpiration;
    /**
     * setCredentials
     * @param {string} username  - username for generating authentication
     * @param {string} secret - secret key from the platform
     * @param {string}  token - Refresh Token taken from the platform.
     *
     */
    setCredentials(username: string, secret: string, token: string): void;
    /**
        * setCredentials
        * @param {string} filePath - reading credentials from file path.
        * file content should be in JSON format and with the below keys:
        * {username:"",secret:"",token:""}
        */
    setCredentialsFromFile(filePath: string): void;
    protected getBearerToken(): Promise<string>;
    protected getBasicAuthToken(): string;
}