export declare type DatabaseAuth = BasicAuth | TokenAuth;
export interface BasicAuth {
    /** Basic auth username. */
    username: string;
    /** Basic auth password. */
    password: string;
}
export interface TokenAuth {
    /** Authentication token, typically starting with O: */
    token: string;
}
export declare function isTokenAuth(auth?: DatabaseAuth): auth is TokenAuth;
export declare function isBasicAuth(auth?: DatabaseAuth): auth is BasicAuth;
export declare function validateAuth(auth: DatabaseAuth): void;